Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Health-checks functions. |
| 3 | * |
Willy Tarreau | 26c2506 | 2009-03-08 09:38:41 +0100 | [diff] [blame] | 4 | * Copyright 2000-2009 Willy Tarreau <w@1wt.eu> |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 5 | * Copyright 2007-2009 Krzysztof Piotr Oledzki <ole@ans.pl> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | */ |
| 13 | |
Willy Tarreau | b881608 | 2008-01-18 12:18:15 +0100 | [diff] [blame] | 14 | #include <assert.h> |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 15 | #include <ctype.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 16 | #include <errno.h> |
| 17 | #include <fcntl.h> |
Willy Tarreau | 9b39dc5 | 2014-07-08 00:54:10 +0200 | [diff] [blame] | 18 | #include <signal.h> |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 19 | #include <stdarg.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 20 | #include <stdio.h> |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 21 | #include <stdlib.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 22 | #include <string.h> |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 23 | #include <time.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 24 | #include <unistd.h> |
Willy Tarreau | 9f6dc72 | 2019-03-01 11:15:10 +0100 | [diff] [blame] | 25 | #include <sys/resource.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 26 | #include <sys/socket.h> |
Dmitry Sivachenko | caf5898 | 2009-08-24 15:11:06 +0400 | [diff] [blame] | 27 | #include <sys/types.h> |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 28 | #include <sys/wait.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 29 | #include <netinet/in.h> |
Willy Tarreau | 1274bc4 | 2009-07-15 07:16:31 +0200 | [diff] [blame] | 30 | #include <netinet/tcp.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 31 | #include <arpa/inet.h> |
| 32 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 33 | #include <common/cfgparse.h> |
Willy Tarreau | c7e4238 | 2012-08-24 19:22:53 +0200 | [diff] [blame] | 34 | #include <common/chunk.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 35 | #include <common/compat.h> |
| 36 | #include <common/config.h> |
| 37 | #include <common/mini-clist.h> |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 38 | #include <common/standard.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 39 | #include <common/time.h> |
Christopher Faulet | cfda847 | 2017-10-20 15:40:23 +0200 | [diff] [blame] | 40 | #include <common/hathreads.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 41 | |
| 42 | #include <types/global.h> |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 43 | #include <types/dns.h> |
William Lallemand | 9ed6203 | 2016-11-21 17:49:11 +0100 | [diff] [blame] | 44 | #include <types/stats.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 45 | |
Gaetan Rivet | 707b52f | 2020-02-21 18:14:59 +0100 | [diff] [blame] | 46 | #include <proto/action.h> |
Christopher Faulet | ba3c68f | 2020-04-01 16:27:05 +0200 | [diff] [blame] | 47 | #include <proto/arg.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 48 | #include <proto/backend.h> |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 49 | #include <proto/checks.h> |
William Lallemand | 9ed6203 | 2016-11-21 17:49:11 +0100 | [diff] [blame] | 50 | #include <proto/stats.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 51 | #include <proto/fd.h> |
| 52 | #include <proto/log.h> |
Willy Tarreau | 53a4766 | 2017-08-28 10:53:00 +0200 | [diff] [blame] | 53 | #include <proto/mux_pt.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 54 | #include <proto/queue.h> |
Willy Tarreau | c6f4ce8 | 2009-06-10 11:09:37 +0200 | [diff] [blame] | 55 | #include <proto/port_range.h> |
Willy Tarreau | e8c66af | 2008-01-13 18:40:14 +0100 | [diff] [blame] | 56 | #include <proto/proto_tcp.h> |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 57 | #include <proto/protocol.h> |
Willy Tarreau | 2b5652f | 2006-12-31 17:46:05 +0100 | [diff] [blame] | 58 | #include <proto/proxy.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 59 | #include <proto/server.h> |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 60 | #include <proto/signal.h> |
Willy Tarreau | 9e000c6 | 2011-03-10 14:03:36 +0100 | [diff] [blame] | 61 | #include <proto/stream_interface.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 62 | #include <proto/task.h> |
Gaetan Rivet | 13a5043 | 2020-02-21 18:13:44 +0100 | [diff] [blame] | 63 | #include <proto/vars.h> |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 64 | #include <proto/log.h> |
| 65 | #include <proto/dns.h> |
| 66 | #include <proto/proto_udp.h> |
Olivier Houchard | 9130a96 | 2017-10-17 17:33:43 +0200 | [diff] [blame] | 67 | #include <proto/ssl_sock.h> |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 68 | #include <proto/sample.h> |
Olivier Houchard | 9130a96 | 2017-10-17 17:33:43 +0200 | [diff] [blame] | 69 | |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 70 | static int httpchk_expect(struct server *s, int done); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 71 | static int tcpcheck_get_step_id(struct check *, struct tcpcheck_rule *); |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 72 | static int tcpcheck_main(struct check *); |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 73 | static void __event_srv_chk_w(struct conn_stream *cs); |
Olivier Houchard | 4501c3e | 2018-08-28 19:36:18 +0200 | [diff] [blame] | 74 | static int wake_srv_chk(struct conn_stream *cs); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 75 | static void __event_srv_chk_r(struct conn_stream *cs); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 76 | |
Christopher Faulet | 31c30fd | 2020-03-26 21:10:03 +0100 | [diff] [blame] | 77 | static int srv_check_healthcheck_port(struct check *chk); |
| 78 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 79 | /* Global list to share all tcp-checks */ |
| 80 | struct list tcpchecks_list = LIST_HEAD_INIT(tcpchecks_list); |
| 81 | |
| 82 | |
Willy Tarreau | 8ceae72 | 2018-11-26 11:58:30 +0100 | [diff] [blame] | 83 | DECLARE_STATIC_POOL(pool_head_email_alert, "email_alert", sizeof(struct email_alert)); |
| 84 | DECLARE_STATIC_POOL(pool_head_tcpcheck_rule, "tcpcheck_rule", sizeof(struct tcpcheck_rule)); |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 85 | |
Gaetan Rivet | 05d692d | 2020-02-14 17:42:54 +0100 | [diff] [blame] | 86 | /* Dummy frontend used to create all checks sessions. */ |
| 87 | static struct proxy checks_fe; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 88 | |
Simon Horman | 63a4a82 | 2012-03-19 07:24:41 +0900 | [diff] [blame] | 89 | static const struct check_status check_statuses[HCHK_STATUS_SIZE] = { |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 90 | [HCHK_STATUS_UNKNOWN] = { CHK_RES_UNKNOWN, "UNK", "Unknown" }, |
| 91 | [HCHK_STATUS_INI] = { CHK_RES_UNKNOWN, "INI", "Initializing" }, |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 92 | [HCHK_STATUS_START] = { /* SPECIAL STATUS*/ }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 93 | |
Willy Tarreau | 2396418 | 2014-05-20 20:56:30 +0200 | [diff] [blame] | 94 | /* Below we have finished checks */ |
| 95 | [HCHK_STATUS_CHECKED] = { CHK_RES_NEUTRAL, "CHECKED", "No status change" }, |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 96 | [HCHK_STATUS_HANA] = { CHK_RES_FAILED, "HANA", "Health analyze" }, |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 97 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 98 | [HCHK_STATUS_SOCKERR] = { CHK_RES_FAILED, "SOCKERR", "Socket error" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 99 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 100 | [HCHK_STATUS_L4OK] = { CHK_RES_PASSED, "L4OK", "Layer4 check passed" }, |
| 101 | [HCHK_STATUS_L4TOUT] = { CHK_RES_FAILED, "L4TOUT", "Layer4 timeout" }, |
| 102 | [HCHK_STATUS_L4CON] = { CHK_RES_FAILED, "L4CON", "Layer4 connection problem" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 103 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 104 | [HCHK_STATUS_L6OK] = { CHK_RES_PASSED, "L6OK", "Layer6 check passed" }, |
| 105 | [HCHK_STATUS_L6TOUT] = { CHK_RES_FAILED, "L6TOUT", "Layer6 timeout" }, |
| 106 | [HCHK_STATUS_L6RSP] = { CHK_RES_FAILED, "L6RSP", "Layer6 invalid response" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 107 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 108 | [HCHK_STATUS_L7TOUT] = { CHK_RES_FAILED, "L7TOUT", "Layer7 timeout" }, |
| 109 | [HCHK_STATUS_L7RSP] = { CHK_RES_FAILED, "L7RSP", "Layer7 invalid response" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 110 | |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 111 | [HCHK_STATUS_L57DATA] = { /* DUMMY STATUS */ }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 112 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 113 | [HCHK_STATUS_L7OKD] = { CHK_RES_PASSED, "L7OK", "Layer7 check passed" }, |
| 114 | [HCHK_STATUS_L7OKCD] = { CHK_RES_CONDPASS, "L7OKC", "Layer7 check conditionally passed" }, |
| 115 | [HCHK_STATUS_L7STS] = { CHK_RES_FAILED, "L7STS", "Layer7 wrong status" }, |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 116 | |
| 117 | [HCHK_STATUS_PROCERR] = { CHK_RES_FAILED, "PROCERR", "External check error" }, |
| 118 | [HCHK_STATUS_PROCTOUT] = { CHK_RES_FAILED, "PROCTOUT", "External check timeout" }, |
Cyril Bonté | 77010d8 | 2014-08-07 01:55:37 +0200 | [diff] [blame] | 119 | [HCHK_STATUS_PROCOK] = { CHK_RES_PASSED, "PROCOK", "External check passed" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 120 | }; |
| 121 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 122 | const struct extcheck_env extcheck_envs[EXTCHK_SIZE] = { |
| 123 | [EXTCHK_PATH] = { "PATH", EXTCHK_SIZE_EVAL_INIT }, |
| 124 | [EXTCHK_HAPROXY_PROXY_NAME] = { "HAPROXY_PROXY_NAME", EXTCHK_SIZE_EVAL_INIT }, |
| 125 | [EXTCHK_HAPROXY_PROXY_ID] = { "HAPROXY_PROXY_ID", EXTCHK_SIZE_EVAL_INIT }, |
| 126 | [EXTCHK_HAPROXY_PROXY_ADDR] = { "HAPROXY_PROXY_ADDR", EXTCHK_SIZE_EVAL_INIT }, |
| 127 | [EXTCHK_HAPROXY_PROXY_PORT] = { "HAPROXY_PROXY_PORT", EXTCHK_SIZE_EVAL_INIT }, |
| 128 | [EXTCHK_HAPROXY_SERVER_NAME] = { "HAPROXY_SERVER_NAME", EXTCHK_SIZE_EVAL_INIT }, |
| 129 | [EXTCHK_HAPROXY_SERVER_ID] = { "HAPROXY_SERVER_ID", EXTCHK_SIZE_EVAL_INIT }, |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 130 | [EXTCHK_HAPROXY_SERVER_ADDR] = { "HAPROXY_SERVER_ADDR", EXTCHK_SIZE_ADDR }, |
| 131 | [EXTCHK_HAPROXY_SERVER_PORT] = { "HAPROXY_SERVER_PORT", EXTCHK_SIZE_UINT }, |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 132 | [EXTCHK_HAPROXY_SERVER_MAXCONN] = { "HAPROXY_SERVER_MAXCONN", EXTCHK_SIZE_EVAL_INIT }, |
| 133 | [EXTCHK_HAPROXY_SERVER_CURCONN] = { "HAPROXY_SERVER_CURCONN", EXTCHK_SIZE_ULONG }, |
| 134 | }; |
| 135 | |
Simon Horman | 63a4a82 | 2012-03-19 07:24:41 +0900 | [diff] [blame] | 136 | static const struct analyze_status analyze_statuses[HANA_STATUS_SIZE] = { /* 0: ignore, 1: error, 2: OK */ |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 137 | [HANA_STATUS_UNKNOWN] = { "Unknown", { 0, 0 }}, |
| 138 | |
| 139 | [HANA_STATUS_L4_OK] = { "L4 successful connection", { 2, 0 }}, |
| 140 | [HANA_STATUS_L4_ERR] = { "L4 unsuccessful connection", { 1, 1 }}, |
| 141 | |
| 142 | [HANA_STATUS_HTTP_OK] = { "Correct http response", { 0, 2 }}, |
| 143 | [HANA_STATUS_HTTP_STS] = { "Wrong http response", { 0, 1 }}, |
| 144 | [HANA_STATUS_HTTP_HDRRSP] = { "Invalid http response (headers)", { 0, 1 }}, |
| 145 | [HANA_STATUS_HTTP_RSP] = { "Invalid http response", { 0, 1 }}, |
| 146 | |
| 147 | [HANA_STATUS_HTTP_READ_ERROR] = { "Read error (http)", { 0, 1 }}, |
| 148 | [HANA_STATUS_HTTP_READ_TIMEOUT] = { "Read timeout (http)", { 0, 1 }}, |
| 149 | [HANA_STATUS_HTTP_BROKEN_PIPE] = { "Close from server (http)", { 0, 1 }}, |
| 150 | }; |
| 151 | |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 152 | /* checks if <err> is a real error for errno or one that can be ignored, and |
| 153 | * return 0 for these ones or <err> for real ones. |
| 154 | */ |
| 155 | static inline int unclean_errno(int err) |
| 156 | { |
| 157 | if (err == EAGAIN || err == EINPROGRESS || |
| 158 | err == EISCONN || err == EALREADY) |
| 159 | return 0; |
| 160 | return err; |
| 161 | } |
| 162 | |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 163 | /* |
| 164 | * Convert check_status code to description |
| 165 | */ |
| 166 | const char *get_check_status_description(short check_status) { |
| 167 | |
| 168 | const char *desc; |
| 169 | |
| 170 | if (check_status < HCHK_STATUS_SIZE) |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 171 | desc = check_statuses[check_status].desc; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 172 | else |
| 173 | desc = NULL; |
| 174 | |
| 175 | if (desc && *desc) |
| 176 | return desc; |
| 177 | else |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 178 | return check_statuses[HCHK_STATUS_UNKNOWN].desc; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | /* |
| 182 | * Convert check_status code to short info |
| 183 | */ |
| 184 | const char *get_check_status_info(short check_status) { |
| 185 | |
| 186 | const char *info; |
| 187 | |
| 188 | if (check_status < HCHK_STATUS_SIZE) |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 189 | info = check_statuses[check_status].info; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 190 | else |
| 191 | info = NULL; |
| 192 | |
| 193 | if (info && *info) |
| 194 | return info; |
| 195 | else |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 196 | return check_statuses[HCHK_STATUS_UNKNOWN].info; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 197 | } |
| 198 | |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 199 | const char *get_analyze_status(short analyze_status) { |
| 200 | |
| 201 | const char *desc; |
| 202 | |
| 203 | if (analyze_status < HANA_STATUS_SIZE) |
| 204 | desc = analyze_statuses[analyze_status].desc; |
| 205 | else |
| 206 | desc = NULL; |
| 207 | |
| 208 | if (desc && *desc) |
| 209 | return desc; |
| 210 | else |
| 211 | return analyze_statuses[HANA_STATUS_UNKNOWN].desc; |
| 212 | } |
| 213 | |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 214 | /* |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 215 | * Set check->status, update check->duration and fill check->result with |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 216 | * an adequate CHK_RES_* value. The new check->health is computed based |
| 217 | * on the result. |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 218 | * |
| 219 | * Show information in logs about failed health check if server is UP |
| 220 | * or succeeded health checks if server is DOWN. |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 221 | */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 222 | static void set_server_check_status(struct check *check, short status, const char *desc) |
Willy Tarreau | 19d14ef | 2012-10-29 16:51:55 +0100 | [diff] [blame] | 223 | { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 224 | struct server *s = check->server; |
Willy Tarreau | bef1b32 | 2014-05-13 21:01:39 +0200 | [diff] [blame] | 225 | short prev_status = check->status; |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 226 | int report = 0; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 227 | |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 228 | if (status == HCHK_STATUS_START) { |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 229 | check->result = CHK_RES_UNKNOWN; /* no result yet */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 230 | check->desc[0] = '\0'; |
| 231 | check->start = now; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 232 | return; |
| 233 | } |
| 234 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 235 | if (!check->status) |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 236 | return; |
| 237 | |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 238 | if (desc && *desc) { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 239 | strncpy(check->desc, desc, HCHK_DESC_LEN-1); |
| 240 | check->desc[HCHK_DESC_LEN-1] = '\0'; |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 241 | } else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 242 | check->desc[0] = '\0'; |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 243 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 244 | check->status = status; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 245 | if (check_statuses[status].result) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 246 | check->result = check_statuses[status].result; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 247 | |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 248 | if (status == HCHK_STATUS_HANA) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 249 | check->duration = -1; |
| 250 | else if (!tv_iszero(&check->start)) { |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 251 | /* set_server_check_status() may be called more than once */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 252 | check->duration = tv_ms_elapsed(&check->start, &now); |
| 253 | tv_zero(&check->start); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 254 | } |
| 255 | |
Willy Tarreau | 2396418 | 2014-05-20 20:56:30 +0200 | [diff] [blame] | 256 | /* no change is expected if no state change occurred */ |
| 257 | if (check->result == CHK_RES_NEUTRAL) |
| 258 | return; |
| 259 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 260 | /* If the check was really just sending a mail, it won't have an |
| 261 | * associated server, so we're done now. |
| 262 | */ |
| 263 | if (!s) |
| 264 | return; |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 265 | report = 0; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 266 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 267 | switch (check->result) { |
| 268 | case CHK_RES_FAILED: |
Willy Tarreau | 12634e1 | 2014-05-23 11:32:36 +0200 | [diff] [blame] | 269 | /* Failure to connect to the agent as a secondary check should not |
| 270 | * cause the server to be marked down. |
| 271 | */ |
| 272 | if ((!(check->state & CHK_ST_AGENT) || |
Simon Horman | eaabd52 | 2015-02-26 11:26:17 +0900 | [diff] [blame] | 273 | (check->status >= HCHK_STATUS_L57DATA)) && |
Christopher Faulet | b119a79 | 2018-05-02 12:12:45 +0200 | [diff] [blame] | 274 | (check->health > 0)) { |
Olivier Houchard | 7059c55 | 2019-03-08 18:49:32 +0100 | [diff] [blame] | 275 | _HA_ATOMIC_ADD(&s->counters.failed_checks, 1); |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 276 | report = 1; |
| 277 | check->health--; |
| 278 | if (check->health < check->rise) |
| 279 | check->health = 0; |
| 280 | } |
| 281 | break; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 282 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 283 | case CHK_RES_PASSED: |
| 284 | case CHK_RES_CONDPASS: /* "condpass" cannot make the first step but it OK after a "passed" */ |
| 285 | if ((check->health < check->rise + check->fall - 1) && |
| 286 | (check->result == CHK_RES_PASSED || check->health > 0)) { |
| 287 | report = 1; |
| 288 | check->health++; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 289 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 290 | if (check->health >= check->rise) |
| 291 | check->health = check->rise + check->fall - 1; /* OK now */ |
| 292 | } |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 293 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 294 | /* clear consecutive_errors if observing is enabled */ |
| 295 | if (s->onerror) |
| 296 | s->consecutive_errors = 0; |
| 297 | break; |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 298 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 299 | default: |
| 300 | break; |
| 301 | } |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 302 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 303 | if (s->proxy->options2 & PR_O2_LOGHCHKS && |
| 304 | (status != prev_status || report)) { |
| 305 | chunk_printf(&trash, |
Willy Tarreau | 12634e1 | 2014-05-23 11:32:36 +0200 | [diff] [blame] | 306 | "%s check for %sserver %s/%s %s%s", |
| 307 | (check->state & CHK_ST_AGENT) ? "Agent" : "Health", |
Willy Tarreau | c93cd16 | 2014-05-13 15:54:22 +0200 | [diff] [blame] | 308 | s->flags & SRV_F_BACKUP ? "backup " : "", |
Willy Tarreau | 19d14ef | 2012-10-29 16:51:55 +0100 | [diff] [blame] | 309 | s->proxy->id, s->id, |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 310 | (check->result == CHK_RES_CONDPASS) ? "conditionally ":"", |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 311 | (check->result >= CHK_RES_PASSED) ? "succeeded" : "failed"); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 312 | |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 313 | srv_append_status(&trash, s, check, -1, 0); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 314 | |
Willy Tarreau | 19d14ef | 2012-10-29 16:51:55 +0100 | [diff] [blame] | 315 | chunk_appendf(&trash, ", status: %d/%d %s", |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 316 | (check->health >= check->rise) ? check->health - check->rise + 1 : check->health, |
| 317 | (check->health >= check->rise) ? check->fall : check->rise, |
| 318 | (check->health >= check->rise) ? (s->uweight ? "UP" : "DRAIN") : "DOWN"); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 319 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 320 | ha_warning("%s.\n", trash.area); |
| 321 | send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area); |
| 322 | send_email_alert(s, LOG_INFO, "%s", trash.area); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 323 | } |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 324 | } |
| 325 | |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 326 | /* Marks the check <check>'s server down if the current check is already failed |
| 327 | * and the server is not down yet nor in maintenance. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 328 | */ |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 329 | static void check_notify_failure(struct check *check) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 330 | { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 331 | struct server *s = check->server; |
Simon Horman | e0d1bfb | 2011-06-21 14:34:58 +0900 | [diff] [blame] | 332 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 333 | /* The agent secondary check should only cause a server to be marked |
| 334 | * as down if check->status is HCHK_STATUS_L7STS, which indicates |
| 335 | * that the agent returned "fail", "stopped" or "down". |
| 336 | * The implication here is that failure to connect to the agent |
| 337 | * as a secondary check should not cause the server to be marked |
| 338 | * down. */ |
| 339 | if ((check->state & CHK_ST_AGENT) && check->status != HCHK_STATUS_L7STS) |
| 340 | return; |
| 341 | |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 342 | if (check->health > 0) |
| 343 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 344 | |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 345 | /* We only report a reason for the check if we did not do so previously */ |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 346 | srv_set_stopped(s, NULL, (!s->track && !(s->proxy->options2 & PR_O2_LOGHCHKS)) ? check : NULL); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 347 | } |
| 348 | |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 349 | /* Marks the check <check> as valid and tries to set its server up, provided |
Willy Tarreau | 3e04838 | 2014-05-21 10:30:54 +0200 | [diff] [blame] | 350 | * it isn't in maintenance, it is not tracking a down server and other checks |
| 351 | * comply. The rule is simple : by default, a server is up, unless any of the |
| 352 | * following conditions is true : |
| 353 | * - health check failed (check->health < rise) |
| 354 | * - agent check failed (agent->health < rise) |
| 355 | * - the server tracks a down server (track && track->state == STOPPED) |
| 356 | * Note that if the server has a slowstart, it will switch to STARTING instead |
| 357 | * of RUNNING. Also, only the health checks support the nolb mode, so the |
| 358 | * agent's success may not take the server out of this mode. |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 359 | */ |
Willy Tarreau | 3e04838 | 2014-05-21 10:30:54 +0200 | [diff] [blame] | 360 | static void check_notify_success(struct check *check) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 361 | { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 362 | struct server *s = check->server; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 363 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 364 | if (s->next_admin & SRV_ADMF_MAINT) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 365 | return; |
Cyril Bonté | cd19e51 | 2010-01-31 22:34:03 +0100 | [diff] [blame] | 366 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 367 | if (s->track && s->track->next_state == SRV_ST_STOPPED) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 368 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 369 | |
Willy Tarreau | 3e04838 | 2014-05-21 10:30:54 +0200 | [diff] [blame] | 370 | if ((s->check.state & CHK_ST_ENABLED) && (s->check.health < s->check.rise)) |
| 371 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 372 | |
Willy Tarreau | 3e04838 | 2014-05-21 10:30:54 +0200 | [diff] [blame] | 373 | if ((s->agent.state & CHK_ST_ENABLED) && (s->agent.health < s->agent.rise)) |
| 374 | return; |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 375 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 376 | if ((check->state & CHK_ST_AGENT) && s->next_state == SRV_ST_STOPPING) |
Willy Tarreau | 3e04838 | 2014-05-21 10:30:54 +0200 | [diff] [blame] | 377 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 378 | |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 379 | srv_set_running(s, NULL, (!s->track && !(s->proxy->options2 & PR_O2_LOGHCHKS)) ? check : NULL); |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 380 | } |
| 381 | |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 382 | /* Marks the check <check> as valid and tries to set its server into stopping mode |
| 383 | * if it was running or starting, and provided it isn't in maintenance and other |
| 384 | * checks comply. The conditions for the server to be marked in stopping mode are |
| 385 | * the same as for it to be turned up. Also, only the health checks support the |
| 386 | * nolb mode. |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 387 | */ |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 388 | static void check_notify_stopping(struct check *check) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 389 | { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 390 | struct server *s = check->server; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 391 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 392 | if (s->next_admin & SRV_ADMF_MAINT) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 393 | return; |
| 394 | |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 395 | if (check->state & CHK_ST_AGENT) |
| 396 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 397 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 398 | if (s->track && s->track->next_state == SRV_ST_STOPPED) |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 399 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 400 | |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 401 | if ((s->check.state & CHK_ST_ENABLED) && (s->check.health < s->check.rise)) |
| 402 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 403 | |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 404 | if ((s->agent.state & CHK_ST_ENABLED) && (s->agent.health < s->agent.rise)) |
| 405 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 406 | |
Willy Tarreau | b26881a | 2017-12-23 11:16:49 +0100 | [diff] [blame] | 407 | srv_set_stopping(s, NULL, (!s->track && !(s->proxy->options2 & PR_O2_LOGHCHKS)) ? check : NULL); |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 408 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 409 | |
Willy Tarreau | 9fe7aae | 2013-12-31 23:47:37 +0100 | [diff] [blame] | 410 | /* note: use health_adjust() only, which first checks that the observe mode is |
| 411 | * enabled. |
| 412 | */ |
| 413 | void __health_adjust(struct server *s, short status) |
Willy Tarreau | 19d14ef | 2012-10-29 16:51:55 +0100 | [diff] [blame] | 414 | { |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 415 | int failed; |
| 416 | int expire; |
| 417 | |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 418 | if (s->observe >= HANA_OBS_SIZE) |
| 419 | return; |
| 420 | |
Willy Tarreau | bb95666 | 2013-01-24 00:37:39 +0100 | [diff] [blame] | 421 | if (status >= HANA_STATUS_SIZE || !analyze_statuses[status].desc) |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 422 | return; |
| 423 | |
| 424 | switch (analyze_statuses[status].lr[s->observe - 1]) { |
| 425 | case 1: |
| 426 | failed = 1; |
| 427 | break; |
| 428 | |
| 429 | case 2: |
| 430 | failed = 0; |
| 431 | break; |
| 432 | |
| 433 | default: |
| 434 | return; |
| 435 | } |
| 436 | |
| 437 | if (!failed) { |
| 438 | /* good: clear consecutive_errors */ |
| 439 | s->consecutive_errors = 0; |
| 440 | return; |
| 441 | } |
| 442 | |
Olivier Houchard | 7059c55 | 2019-03-08 18:49:32 +0100 | [diff] [blame] | 443 | _HA_ATOMIC_ADD(&s->consecutive_errors, 1); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 444 | |
| 445 | if (s->consecutive_errors < s->consecutive_errors_limit) |
| 446 | return; |
| 447 | |
Willy Tarreau | 19d14ef | 2012-10-29 16:51:55 +0100 | [diff] [blame] | 448 | chunk_printf(&trash, "Detected %d consecutive errors, last one was: %s", |
| 449 | s->consecutive_errors, get_analyze_status(status)); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 450 | |
| 451 | switch (s->onerror) { |
| 452 | case HANA_ONERR_FASTINTER: |
| 453 | /* force fastinter - nothing to do here as all modes force it */ |
| 454 | break; |
| 455 | |
| 456 | case HANA_ONERR_SUDDTH: |
| 457 | /* simulate a pre-fatal failed health check */ |
Simon Horman | 58c3297 | 2013-11-25 10:46:38 +0900 | [diff] [blame] | 458 | if (s->check.health > s->check.rise) |
| 459 | s->check.health = s->check.rise + 1; |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 460 | |
| 461 | /* no break - fall through */ |
| 462 | |
| 463 | case HANA_ONERR_FAILCHK: |
| 464 | /* simulate a failed health check */ |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 465 | set_server_check_status(&s->check, HCHK_STATUS_HANA, |
| 466 | trash.area); |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 467 | check_notify_failure(&s->check); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 468 | break; |
| 469 | |
| 470 | case HANA_ONERR_MARKDWN: |
| 471 | /* mark server down */ |
Simon Horman | 58c3297 | 2013-11-25 10:46:38 +0900 | [diff] [blame] | 472 | s->check.health = s->check.rise; |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 473 | set_server_check_status(&s->check, HCHK_STATUS_HANA, |
| 474 | trash.area); |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 475 | check_notify_failure(&s->check); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 476 | break; |
| 477 | |
| 478 | default: |
| 479 | /* write a warning? */ |
| 480 | break; |
| 481 | } |
| 482 | |
| 483 | s->consecutive_errors = 0; |
Olivier Houchard | 7059c55 | 2019-03-08 18:49:32 +0100 | [diff] [blame] | 484 | _HA_ATOMIC_ADD(&s->counters.failed_hana, 1); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 485 | |
Simon Horman | 6618300 | 2013-02-23 10:16:43 +0900 | [diff] [blame] | 486 | if (s->check.fastinter) { |
| 487 | expire = tick_add(now_ms, MS_TO_TICKS(s->check.fastinter)); |
Sergiy Prykhodko | 1d57e50 | 2013-09-21 12:05:00 +0300 | [diff] [blame] | 488 | if (s->check.task->expire > expire) { |
Willy Tarreau | 5b3a202 | 2012-09-28 15:01:02 +0200 | [diff] [blame] | 489 | s->check.task->expire = expire; |
Sergiy Prykhodko | 1d57e50 | 2013-09-21 12:05:00 +0300 | [diff] [blame] | 490 | /* requeue check task with new expire */ |
| 491 | task_queue(s->check.task); |
| 492 | } |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 493 | } |
| 494 | } |
| 495 | |
Willy Tarreau | a1dab55 | 2014-04-14 15:04:54 +0200 | [diff] [blame] | 496 | static int httpchk_build_status_header(struct server *s, char *buffer, int size) |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 497 | { |
| 498 | int sv_state; |
| 499 | int ratio; |
| 500 | int hlen = 0; |
Joseph Lynch | 514061c | 2015-01-15 17:52:59 -0800 | [diff] [blame] | 501 | char addr[46]; |
| 502 | char port[6]; |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 503 | const char *srv_hlt_st[7] = { "DOWN", "DOWN %d/%d", |
| 504 | "UP %d/%d", "UP", |
| 505 | "NOLB %d/%d", "NOLB", |
| 506 | "no check" }; |
| 507 | |
| 508 | memcpy(buffer + hlen, "X-Haproxy-Server-State: ", 24); |
| 509 | hlen += 24; |
| 510 | |
Willy Tarreau | ff5ae35 | 2013-12-11 20:36:34 +0100 | [diff] [blame] | 511 | if (!(s->check.state & CHK_ST_ENABLED)) |
| 512 | sv_state = 6; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 513 | else if (s->cur_state != SRV_ST_STOPPED) { |
Simon Horman | 58c3297 | 2013-11-25 10:46:38 +0900 | [diff] [blame] | 514 | if (s->check.health == s->check.rise + s->check.fall - 1) |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 515 | sv_state = 3; /* UP */ |
| 516 | else |
| 517 | sv_state = 2; /* going down */ |
| 518 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 519 | if (s->cur_state == SRV_ST_STOPPING) |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 520 | sv_state += 2; |
| 521 | } else { |
Simon Horman | 125d099 | 2013-02-24 17:23:38 +0900 | [diff] [blame] | 522 | if (s->check.health) |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 523 | sv_state = 1; /* going up */ |
| 524 | else |
| 525 | sv_state = 0; /* DOWN */ |
| 526 | } |
| 527 | |
Willy Tarreau | a1dab55 | 2014-04-14 15:04:54 +0200 | [diff] [blame] | 528 | hlen += snprintf(buffer + hlen, size - hlen, |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 529 | srv_hlt_st[sv_state], |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 530 | (s->cur_state != SRV_ST_STOPPED) ? (s->check.health - s->check.rise + 1) : (s->check.health), |
| 531 | (s->cur_state != SRV_ST_STOPPED) ? (s->check.fall) : (s->check.rise)); |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 532 | |
Joseph Lynch | 514061c | 2015-01-15 17:52:59 -0800 | [diff] [blame] | 533 | addr_to_str(&s->addr, addr, sizeof(addr)); |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 534 | if (s->addr.ss_family == AF_INET || s->addr.ss_family == AF_INET6) |
| 535 | snprintf(port, sizeof(port), "%u", s->svc_port); |
| 536 | else |
| 537 | *port = 0; |
Joseph Lynch | 514061c | 2015-01-15 17:52:59 -0800 | [diff] [blame] | 538 | |
| 539 | hlen += snprintf(buffer + hlen, size - hlen, "; address=%s; port=%s; name=%s/%s; node=%s; weight=%d/%d; scur=%d/%d; qcur=%d", |
| 540 | addr, port, s->proxy->id, s->id, |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 541 | global.node, |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 542 | (s->cur_eweight * s->proxy->lbprm.wmult + s->proxy->lbprm.wdiv - 1) / s->proxy->lbprm.wdiv, |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 543 | (s->proxy->lbprm.tot_weight * s->proxy->lbprm.wmult + s->proxy->lbprm.wdiv - 1) / s->proxy->lbprm.wdiv, |
| 544 | s->cur_sess, s->proxy->beconn - s->proxy->nbpend, |
| 545 | s->nbpend); |
| 546 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 547 | if ((s->cur_state == SRV_ST_STARTING) && |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 548 | now.tv_sec < s->last_change + s->slowstart && |
| 549 | now.tv_sec >= s->last_change) { |
| 550 | ratio = MAX(1, 100 * (now.tv_sec - s->last_change) / s->slowstart); |
Willy Tarreau | a1dab55 | 2014-04-14 15:04:54 +0200 | [diff] [blame] | 551 | hlen += snprintf(buffer + hlen, size - hlen, "; throttle=%d%%", ratio); |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 552 | } |
| 553 | |
| 554 | buffer[hlen++] = '\r'; |
| 555 | buffer[hlen++] = '\n'; |
| 556 | |
| 557 | return hlen; |
| 558 | } |
| 559 | |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 560 | /* Check the connection. If an error has already been reported or the socket is |
| 561 | * closed, keep errno intact as it is supposed to contain the valid error code. |
| 562 | * If no error is reported, check the socket's error queue using getsockopt(). |
| 563 | * Warning, this must be done only once when returning from poll, and never |
| 564 | * after an I/O error was attempted, otherwise the error queue might contain |
| 565 | * inconsistent errors. If an error is detected, the CO_FL_ERROR is set on the |
| 566 | * socket. Returns non-zero if an error was reported, zero if everything is |
| 567 | * clean (including a properly closed socket). |
| 568 | */ |
| 569 | static int retrieve_errno_from_socket(struct connection *conn) |
| 570 | { |
| 571 | int skerr; |
| 572 | socklen_t lskerr = sizeof(skerr); |
| 573 | |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 574 | if (conn->flags & CO_FL_ERROR && (unclean_errno(errno) || !conn->ctrl)) |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 575 | return 1; |
| 576 | |
Willy Tarreau | 3c72872 | 2014-01-23 13:50:42 +0100 | [diff] [blame] | 577 | if (!conn_ctrl_ready(conn)) |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 578 | return 0; |
| 579 | |
Willy Tarreau | 585744b | 2017-08-24 14:31:19 +0200 | [diff] [blame] | 580 | if (getsockopt(conn->handle.fd, SOL_SOCKET, SO_ERROR, &skerr, &lskerr) == 0) |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 581 | errno = skerr; |
| 582 | |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 583 | errno = unclean_errno(errno); |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 584 | |
| 585 | if (!errno) { |
| 586 | /* we could not retrieve an error, that does not mean there is |
| 587 | * none. Just don't change anything and only report the prior |
| 588 | * error if any. |
| 589 | */ |
| 590 | if (conn->flags & CO_FL_ERROR) |
| 591 | return 1; |
| 592 | else |
| 593 | return 0; |
| 594 | } |
| 595 | |
| 596 | conn->flags |= CO_FL_ERROR | CO_FL_SOCK_WR_SH | CO_FL_SOCK_RD_SH; |
| 597 | return 1; |
| 598 | } |
| 599 | |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 600 | /* Try to collect as much information as possible on the connection status, |
| 601 | * and adjust the server status accordingly. It may make use of <errno_bck> |
| 602 | * if non-null when the caller is absolutely certain of its validity (eg: |
| 603 | * checked just after a syscall). If the caller doesn't have a valid errno, |
| 604 | * it can pass zero, and retrieve_errno_from_socket() will be called to try |
| 605 | * to extract errno from the socket. If no error is reported, it will consider |
| 606 | * the <expired> flag. This is intended to be used when a connection error was |
| 607 | * reported in conn->flags or when a timeout was reported in <expired>. The |
| 608 | * function takes care of not updating a server status which was already set. |
| 609 | * All situations where at least one of <expired> or CO_FL_ERROR are set |
| 610 | * produce a status. |
| 611 | */ |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 612 | static void chk_report_conn_err(struct check *check, int errno_bck, int expired) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 613 | { |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 614 | struct conn_stream *cs = check->cs; |
| 615 | struct connection *conn = cs_conn(cs); |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 616 | const char *err_msg; |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 617 | struct buffer *chk; |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 618 | int step; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 619 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 620 | if (check->result != CHK_RES_UNKNOWN) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 621 | return; |
| 622 | |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 623 | errno = unclean_errno(errno_bck); |
| 624 | if (conn && errno) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 625 | retrieve_errno_from_socket(conn); |
| 626 | |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 627 | if (conn && !(conn->flags & CO_FL_ERROR) && |
| 628 | !(cs->flags & CS_FL_ERROR) && !expired) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 629 | return; |
| 630 | |
| 631 | /* we'll try to build a meaningful error message depending on the |
| 632 | * context of the error possibly present in conn->err_code, and the |
| 633 | * socket error possibly collected above. This is useful to know the |
| 634 | * exact step of the L6 layer (eg: SSL handshake). |
| 635 | */ |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 636 | chk = get_trash_chunk(); |
| 637 | |
| 638 | if (check->type == PR_O2_TCPCHK_CHK) { |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 639 | step = tcpcheck_get_step_id(check, NULL); |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 640 | if (!step) |
| 641 | chunk_printf(chk, " at initial connection step of tcp-check"); |
| 642 | else { |
| 643 | chunk_printf(chk, " at step %d of tcp-check", step); |
| 644 | /* we were looking for a string */ |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 645 | if (check->current_step && check->current_step->action == TCPCHK_ACT_CONNECT) { |
| 646 | if (check->current_step->connect.port) |
| 647 | chunk_appendf(chk, " (connect port %d)" ,check->current_step->connect.port); |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 648 | else |
| 649 | chunk_appendf(chk, " (connect)"); |
| 650 | } |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 651 | else if (check->current_step && check->current_step->action == TCPCHK_ACT_EXPECT) { |
| 652 | struct tcpcheck_expect *expect = &check->current_step->expect; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 653 | |
| 654 | switch (expect->type) { |
| 655 | case TCPCHK_EXPECT_STRING: |
| 656 | chunk_appendf(chk, " (expect string '%s')", expect->string); |
| 657 | break; |
| 658 | case TCPCHK_EXPECT_BINARY: |
| 659 | chunk_appendf(chk, " (expect binary '%s')", expect->string); |
| 660 | break; |
| 661 | case TCPCHK_EXPECT_REGEX: |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 662 | chunk_appendf(chk, " (expect regex)"); |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 663 | break; |
Gaetan Rivet | efab6c6 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 664 | case TCPCHK_EXPECT_REGEX_BINARY: |
| 665 | chunk_appendf(chk, " (expect binary regex)"); |
| 666 | break; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 667 | case TCPCHK_EXPECT_UNDEF: |
| 668 | chunk_appendf(chk, " (undefined expect!)"); |
| 669 | break; |
| 670 | } |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 671 | } |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 672 | else if (check->current_step && check->current_step->action == TCPCHK_ACT_SEND) { |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 673 | chunk_appendf(chk, " (send)"); |
| 674 | } |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 675 | |
Christopher Faulet | 6f2a5e4 | 2020-04-01 13:11:41 +0200 | [diff] [blame] | 676 | if (check->current_step && check->current_step->comment) |
| 677 | chunk_appendf(chk, " comment: '%s'", check->current_step->comment); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 678 | } |
| 679 | } |
| 680 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 681 | if (conn && conn->err_code) { |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 682 | if (unclean_errno(errno)) |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 683 | chunk_printf(&trash, "%s (%s)%s", conn_err_code_str(conn), strerror(errno), |
| 684 | chk->area); |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 685 | else |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 686 | chunk_printf(&trash, "%s%s", conn_err_code_str(conn), |
| 687 | chk->area); |
| 688 | err_msg = trash.area; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 689 | } |
| 690 | else { |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 691 | if (unclean_errno(errno)) { |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 692 | chunk_printf(&trash, "%s%s", strerror(errno), |
| 693 | chk->area); |
| 694 | err_msg = trash.area; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 695 | } |
| 696 | else { |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 697 | err_msg = chk->area; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 698 | } |
| 699 | } |
| 700 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 701 | if (check->state & CHK_ST_PORT_MISS) { |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 702 | /* NOTE: this is reported after <fall> tries */ |
| 703 | chunk_printf(chk, "No port available for the TCP connection"); |
| 704 | set_server_check_status(check, HCHK_STATUS_SOCKERR, err_msg); |
| 705 | } |
| 706 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 707 | if (!conn) { |
| 708 | /* connection allocation error before the connection was established */ |
| 709 | set_server_check_status(check, HCHK_STATUS_SOCKERR, err_msg); |
| 710 | } |
Willy Tarreau | c192b0a | 2020-01-23 09:11:58 +0100 | [diff] [blame] | 711 | else if (conn->flags & CO_FL_WAIT_L4_CONN) { |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 712 | /* L4 not established (yet) */ |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 713 | if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 714 | set_server_check_status(check, HCHK_STATUS_L4CON, err_msg); |
| 715 | else if (expired) |
| 716 | set_server_check_status(check, HCHK_STATUS_L4TOUT, err_msg); |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 717 | |
| 718 | /* |
| 719 | * might be due to a server IP change. |
| 720 | * Let's trigger a DNS resolution if none are currently running. |
| 721 | */ |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 722 | if (check->server) |
| 723 | dns_trigger_resolution(check->server->dns_requester); |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 724 | |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 725 | } |
Willy Tarreau | c192b0a | 2020-01-23 09:11:58 +0100 | [diff] [blame] | 726 | else if (conn->flags & CO_FL_WAIT_L6_CONN) { |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 727 | /* L6 not established (yet) */ |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 728 | if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 729 | set_server_check_status(check, HCHK_STATUS_L6RSP, err_msg); |
| 730 | else if (expired) |
| 731 | set_server_check_status(check, HCHK_STATUS_L6TOUT, err_msg); |
| 732 | } |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 733 | else if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) { |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 734 | /* I/O error after connection was established and before we could diagnose */ |
| 735 | set_server_check_status(check, HCHK_STATUS_SOCKERR, err_msg); |
| 736 | } |
| 737 | else if (expired) { |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 738 | enum healthcheck_status tout = HCHK_STATUS_L7TOUT; |
| 739 | |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 740 | /* connection established but expired check */ |
| 741 | if (check->type == PR_O2_SSL3_CHK) |
| 742 | set_server_check_status(check, HCHK_STATUS_L6TOUT, err_msg); |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 743 | else { /* HTTP, SMTP, ... */ |
| 744 | if (check->current_step && check->current_step->action == TCPCHK_ACT_EXPECT) |
| 745 | tout = check->current_step->expect.tout_status; |
| 746 | set_server_check_status(check, tout, err_msg); |
| 747 | } |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | return; |
| 751 | } |
| 752 | |
Olivier Houchard | 5c110b9 | 2018-08-14 17:04:58 +0200 | [diff] [blame] | 753 | /* This function checks if any I/O is wanted, and if so, attempts to do so */ |
| 754 | static struct task *event_srv_chk_io(struct task *t, void *ctx, unsigned short state) |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 755 | { |
Olivier Houchard | 26e1a8f | 2018-09-12 15:15:12 +0200 | [diff] [blame] | 756 | struct check *check = ctx; |
| 757 | struct conn_stream *cs = check->cs; |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 758 | struct email_alertq *q = container_of(check, typeof(*q), check); |
Olivier Houchard | bc89ad8 | 2019-07-09 17:28:51 +0200 | [diff] [blame] | 759 | int ret = 0; |
Olivier Houchard | 4501c3e | 2018-08-28 19:36:18 +0200 | [diff] [blame] | 760 | |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 761 | if (!(check->wait_list.events & SUB_RETRY_SEND)) |
Olivier Houchard | bc89ad8 | 2019-07-09 17:28:51 +0200 | [diff] [blame] | 762 | ret = wake_srv_chk(cs); |
| 763 | if (ret == 0 && !(check->wait_list.events & SUB_RETRY_RECV)) { |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 764 | if (check->server) |
| 765 | HA_SPIN_LOCK(SERVER_LOCK, &check->server->lock); |
| 766 | else |
| 767 | HA_SPIN_LOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 768 | __event_srv_chk_r(cs); |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 769 | if (check->server) |
| 770 | HA_SPIN_UNLOCK(SERVER_LOCK, &check->server->lock); |
| 771 | else |
| 772 | HA_SPIN_UNLOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 773 | } |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 774 | return NULL; |
| 775 | } |
| 776 | |
| 777 | /* same as above but protected by the server lock. |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 778 | * |
| 779 | * Please do NOT place any return statement in this function and only leave |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 780 | * via the out label. NOTE THAT THIS FUNCTION DOESN'T LOCK, YOU PROBABLY WANT |
| 781 | * TO USE event_srv_chk_w() instead. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 782 | */ |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 783 | static void __event_srv_chk_w(struct conn_stream *cs) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 784 | { |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 785 | struct connection *conn = cs->conn; |
| 786 | struct check *check = cs->data; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 787 | struct server *s = check->server; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 788 | struct task *t = check->task; |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 789 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 790 | if (unlikely(check->result == CHK_RES_FAILED)) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 791 | goto out_wakeup; |
| 792 | |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 793 | if (retrieve_errno_from_socket(conn)) { |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 794 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 795 | goto out_wakeup; |
| 796 | } |
Krzysztof Piotr Oledzki | 6492db5 | 2010-01-02 22:03:01 +0100 | [diff] [blame] | 797 | |
Willy Tarreau | 06559ac | 2013-12-05 01:53:08 +0100 | [diff] [blame] | 798 | /* here, we know that the connection is established. That's enough for |
| 799 | * a pure TCP check. |
| 800 | */ |
| 801 | if (!check->type) |
| 802 | goto out_wakeup; |
| 803 | |
Willy Tarreau | c09572f | 2017-10-04 11:58:22 +0200 | [diff] [blame] | 804 | /* wake() will take care of calling tcpcheck_main() */ |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 805 | if (check->type == PR_O2_TCPCHK_CHK) |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 806 | goto out; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 807 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 808 | if (b_data(&check->bo)) { |
Olivier Houchard | ed0f207 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 809 | cs->conn->mux->snd_buf(cs, &check->bo, b_data(&check->bo), 0); |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 810 | b_realign_if_empty(&check->bo); |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 811 | if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) { |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 812 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 813 | goto out_wakeup; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 814 | } |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 815 | if (b_data(&check->bo)) { |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 816 | conn->mux->subscribe(cs, SUB_RETRY_SEND, &check->wait_list); |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 817 | goto out; |
| 818 | } |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 819 | } |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 820 | |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 821 | /* full request sent, we allow up to <timeout.check> if nonzero for a response */ |
| 822 | if (s->proxy->timeout.check) { |
| 823 | t->expire = tick_add_ifset(now_ms, s->proxy->timeout.check); |
| 824 | task_queue(t); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 825 | } |
Olivier Houchard | 53216e7 | 2018-10-10 15:46:36 +0200 | [diff] [blame] | 826 | goto out; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 827 | |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 828 | out_wakeup: |
Willy Tarreau | fdccded | 2008-08-29 18:19:04 +0200 | [diff] [blame] | 829 | task_wakeup(t, TASK_WOKEN_IO); |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 830 | out: |
| 831 | return; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 832 | } |
| 833 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 834 | /* |
Willy Tarreau | f3c6920 | 2006-07-09 16:42:34 +0200 | [diff] [blame] | 835 | * This function is used only for server health-checks. It handles the server's |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 836 | * reply to an HTTP request, SSL HELLO or MySQL client Auth. It calls |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 837 | * set_server_check_status() to update check->status, check->duration |
| 838 | * and check->result. |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 839 | |
| 840 | * The set_server_check_status function is called with HCHK_STATUS_L7OKD if |
| 841 | * an HTTP server replies HTTP 2xx or 3xx (valid responses), if an SMTP server |
| 842 | * returns 2xx, HCHK_STATUS_L6OK if an SSL server returns at least 5 bytes in |
| 843 | * response to an SSL HELLO (the principle is that this is enough to |
| 844 | * distinguish between an SSL server and a pure TCP relay). All other cases will |
| 845 | * call it with a proper error status like HCHK_STATUS_L7STS, HCHK_STATUS_L6RSP, |
| 846 | * etc. |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 847 | * |
| 848 | * Please do NOT place any return statement in this function and only leave |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 849 | * via the out label. |
| 850 | * |
| 851 | * This must be called with the server lock held. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 852 | */ |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 853 | static void __event_srv_chk_r(struct conn_stream *cs) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 854 | { |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 855 | struct connection *conn = cs->conn; |
| 856 | struct check *check = cs->data; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 857 | struct server *s = check->server; |
| 858 | struct task *t = check->task; |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 859 | char *desc; |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 860 | int done; |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 861 | unsigned short msglen; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 862 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 863 | if (unlikely(check->result == CHK_RES_FAILED)) |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 864 | goto out_wakeup; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 865 | |
Willy Tarreau | c09572f | 2017-10-04 11:58:22 +0200 | [diff] [blame] | 866 | /* wake() will take care of calling tcpcheck_main() */ |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 867 | if (check->type == PR_O2_TCPCHK_CHK) |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 868 | goto out; |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 869 | |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 870 | /* Warning! Linux returns EAGAIN on SO_ERROR if data are still available |
| 871 | * but the connection was closed on the remote end. Fortunately, recv still |
| 872 | * works correctly and we don't need to do the getsockopt() on linux. |
| 873 | */ |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 874 | |
| 875 | /* Set buffer to point to the end of the data already read, and check |
| 876 | * that there is free space remaining. If the buffer is full, proceed |
| 877 | * with running the checks without attempting another socket read. |
| 878 | */ |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 879 | |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 880 | done = 0; |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 881 | |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 882 | cs->conn->mux->rcv_buf(cs, &check->bi, b_size(&check->bi), 0); |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 883 | if (conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH) || cs->flags & CS_FL_ERROR) { |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 884 | done = 1; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 885 | if ((conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) && !b_data(&check->bi)) { |
Willy Tarreau | f150317 | 2012-09-28 19:39:36 +0200 | [diff] [blame] | 886 | /* Report network errors only if we got no other data. Otherwise |
| 887 | * we'll let the upper layers decide whether the response is OK |
| 888 | * or not. It is very common that an RST sent by the server is |
| 889 | * reported as an error just after the last data chunk. |
| 890 | */ |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 891 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | c1a0796 | 2010-03-16 20:55:43 +0100 | [diff] [blame] | 892 | goto out_wakeup; |
| 893 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 894 | } |
| 895 | |
Willy Tarreau | 0f0393f | 2019-09-24 10:43:03 +0200 | [diff] [blame] | 896 | /* the rest of the code below expects the connection to be ready! */ |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 897 | if (conn->flags & CO_FL_WAIT_XPRT && !done) |
Willy Tarreau | 0f0393f | 2019-09-24 10:43:03 +0200 | [diff] [blame] | 898 | goto wait_more_data; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 899 | |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 900 | /* Intermediate or complete response received. |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 901 | * Terminate string in b_head(&check->bi) buffer. |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 902 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 903 | if (b_data(&check->bi) < b_size(&check->bi)) |
| 904 | b_head(&check->bi)[b_data(&check->bi)] = '\0'; |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 905 | else { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 906 | b_head(&check->bi)[b_data(&check->bi) - 1] = '\0'; |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 907 | done = 1; /* buffer full, don't wait for more data */ |
| 908 | } |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 909 | |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 910 | /* Run the checks... */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 911 | switch (check->type) { |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 912 | case PR_O2_HTTP_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 913 | if (!done && b_data(&check->bi) < strlen("HTTP/1.0 000\r")) |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 914 | goto wait_more_data; |
| 915 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 916 | /* Check if the server speaks HTTP 1.X */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 917 | if ((b_data(&check->bi) < strlen("HTTP/1.0 000\r")) || |
| 918 | (memcmp(b_head(&check->bi), "HTTP/1.", 7) != 0 || |
| 919 | (*(b_head(&check->bi) + 12) != ' ' && *(b_head(&check->bi) + 12) != '\r')) || |
| 920 | !isdigit((unsigned char) *(b_head(&check->bi) + 9)) || !isdigit((unsigned char) *(b_head(&check->bi) + 10)) || |
| 921 | !isdigit((unsigned char) *(b_head(&check->bi) + 11))) { |
| 922 | cut_crlf(b_head(&check->bi)); |
| 923 | set_server_check_status(check, HCHK_STATUS_L7RSP, b_head(&check->bi)); |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 924 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 925 | goto out_wakeup; |
| 926 | } |
| 927 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 928 | check->code = str2uic(b_head(&check->bi) + 9); |
| 929 | desc = ltrim(b_head(&check->bi) + 12, ' '); |
Christopher Faulet | c2a89a6 | 2017-10-23 15:54:24 +0200 | [diff] [blame] | 930 | |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 931 | if ((s->proxy->options & PR_O_DISABLE404) && |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 932 | (s->next_state != SRV_ST_STOPPED) && (check->code == 404)) { |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 933 | /* 404 may be accepted as "stopping" only if the server was up */ |
| 934 | cut_crlf(desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 935 | set_server_check_status(check, HCHK_STATUS_L7OKCD, desc); |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 936 | } |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 937 | else if (s->proxy->options2 & PR_O2_EXP_TYPE) { |
| 938 | /* Run content verification check... We know we have at least 13 chars */ |
| 939 | if (!httpchk_expect(s, done)) |
| 940 | goto wait_more_data; |
| 941 | } |
| 942 | /* check the reply : HTTP/1.X 2xx and 3xx are OK */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 943 | else if (*(b_head(&check->bi) + 9) == '2' || *(b_head(&check->bi) + 9) == '3') { |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 944 | cut_crlf(desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 945 | set_server_check_status(check, HCHK_STATUS_L7OKD, desc); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 946 | } |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 947 | else { |
| 948 | cut_crlf(desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 949 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 950 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 951 | break; |
| 952 | |
| 953 | case PR_O2_SSL3_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 954 | if (!done && b_data(&check->bi) < 5) |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 955 | goto wait_more_data; |
| 956 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 957 | /* Check for SSLv3 alert or handshake */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 958 | if ((b_data(&check->bi) >= 5) && (*b_head(&check->bi) == 0x15 || *b_head(&check->bi) == 0x16)) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 959 | set_server_check_status(check, HCHK_STATUS_L6OK, NULL); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 960 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 961 | set_server_check_status(check, HCHK_STATUS_L6RSP, NULL); |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 962 | break; |
| 963 | |
| 964 | case PR_O2_SMTP_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 965 | if (!done && b_data(&check->bi) < strlen("000\r")) |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 966 | goto wait_more_data; |
| 967 | |
Willy Tarreau | 5488a62 | 2019-08-06 16:26:31 +0200 | [diff] [blame] | 968 | /* do not reset when closing, servers don't like this */ |
| 969 | if (conn_ctrl_ready(cs->conn)) |
| 970 | fdtab[cs->conn->handle.fd].linger_risk = 0; |
| 971 | |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 972 | /* Check if the server speaks SMTP */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 973 | if ((b_data(&check->bi) < strlen("000\r")) || |
| 974 | (*(b_head(&check->bi) + 3) != ' ' && *(b_head(&check->bi) + 3) != '\r') || |
| 975 | !isdigit((unsigned char) *b_head(&check->bi)) || !isdigit((unsigned char) *(b_head(&check->bi) + 1)) || |
| 976 | !isdigit((unsigned char) *(b_head(&check->bi) + 2))) { |
| 977 | cut_crlf(b_head(&check->bi)); |
| 978 | set_server_check_status(check, HCHK_STATUS_L7RSP, b_head(&check->bi)); |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 979 | goto out_wakeup; |
| 980 | } |
| 981 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 982 | check->code = str2uic(b_head(&check->bi)); |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 983 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 984 | desc = ltrim(b_head(&check->bi) + 3, ' '); |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 985 | cut_crlf(desc); |
| 986 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 987 | /* Check for SMTP code 2xx (should be 250) */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 988 | if (*b_head(&check->bi) == '2') |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 989 | set_server_check_status(check, HCHK_STATUS_L7OKD, desc); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 990 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 991 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 992 | break; |
| 993 | |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 994 | case PR_O2_LB_AGENT_CHK: { |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 995 | int status = HCHK_STATUS_CHECKED; |
| 996 | const char *hs = NULL; /* health status */ |
| 997 | const char *as = NULL; /* admin status */ |
| 998 | const char *ps = NULL; /* performance status */ |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 999 | const char *cs = NULL; /* maxconn */ |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1000 | const char *err = NULL; /* first error to report */ |
| 1001 | const char *wrn = NULL; /* first warning to report */ |
| 1002 | char *cmd, *p; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1003 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1004 | /* We're getting an agent check response. The agent could |
| 1005 | * have been disabled in the mean time with a long check |
| 1006 | * still pending. It is important that we ignore the whole |
| 1007 | * response. |
| 1008 | */ |
| 1009 | if (!(check->server->agent.state & CHK_ST_ENABLED)) |
| 1010 | break; |
| 1011 | |
| 1012 | /* The agent supports strings made of a single line ended by the |
| 1013 | * first CR ('\r') or LF ('\n'). This line is composed of words |
| 1014 | * delimited by spaces (' '), tabs ('\t'), or commas (','). The |
| 1015 | * line may optionally contained a description of a state change |
| 1016 | * after a sharp ('#'), which is only considered if a health state |
| 1017 | * is announced. |
| 1018 | * |
| 1019 | * Words may be composed of : |
| 1020 | * - a numeric weight suffixed by the percent character ('%'). |
| 1021 | * - a health status among "up", "down", "stopped", and "fail". |
| 1022 | * - an admin status among "ready", "drain", "maint". |
| 1023 | * |
| 1024 | * These words may appear in any order. If multiple words of the |
| 1025 | * same category appear, the last one wins. |
| 1026 | */ |
| 1027 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1028 | p = b_head(&check->bi); |
Willy Tarreau | 9809b78 | 2013-12-11 21:40:11 +0100 | [diff] [blame] | 1029 | while (*p && *p != '\n' && *p != '\r') |
| 1030 | p++; |
| 1031 | |
| 1032 | if (!*p) { |
| 1033 | if (!done) |
| 1034 | goto wait_more_data; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1035 | |
Willy Tarreau | 9809b78 | 2013-12-11 21:40:11 +0100 | [diff] [blame] | 1036 | /* at least inform the admin that the agent is mis-behaving */ |
| 1037 | set_server_check_status(check, check->status, "Ignoring incomplete line from agent"); |
| 1038 | break; |
| 1039 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1040 | |
Willy Tarreau | 9809b78 | 2013-12-11 21:40:11 +0100 | [diff] [blame] | 1041 | *p = 0; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1042 | cmd = b_head(&check->bi); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1043 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1044 | while (*cmd) { |
| 1045 | /* look for next word */ |
| 1046 | if (*cmd == ' ' || *cmd == '\t' || *cmd == ',') { |
| 1047 | cmd++; |
| 1048 | continue; |
| 1049 | } |
Simon Horman | 671b6f0 | 2013-11-25 10:46:39 +0900 | [diff] [blame] | 1050 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1051 | if (*cmd == '#') { |
| 1052 | /* this is the beginning of a health status description, |
| 1053 | * skip the sharp and blanks. |
| 1054 | */ |
| 1055 | cmd++; |
| 1056 | while (*cmd == '\t' || *cmd == ' ') |
| 1057 | cmd++; |
Simon Horman | 671b6f0 | 2013-11-25 10:46:39 +0900 | [diff] [blame] | 1058 | break; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1059 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1060 | |
| 1061 | /* find the end of the word so that we have a null-terminated |
| 1062 | * word between <cmd> and <p>. |
| 1063 | */ |
| 1064 | p = cmd + 1; |
| 1065 | while (*p && *p != '\t' && *p != ' ' && *p != '\n' && *p != ',') |
| 1066 | p++; |
| 1067 | if (*p) |
| 1068 | *p++ = 0; |
| 1069 | |
| 1070 | /* first, health statuses */ |
| 1071 | if (strcasecmp(cmd, "up") == 0) { |
| 1072 | check->health = check->rise + check->fall - 1; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1073 | status = HCHK_STATUS_L7OKD; |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1074 | hs = cmd; |
| 1075 | } |
| 1076 | else if (strcasecmp(cmd, "down") == 0) { |
| 1077 | check->health = 0; |
| 1078 | status = HCHK_STATUS_L7STS; |
| 1079 | hs = cmd; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1080 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1081 | else if (strcasecmp(cmd, "stopped") == 0) { |
| 1082 | check->health = 0; |
| 1083 | status = HCHK_STATUS_L7STS; |
| 1084 | hs = cmd; |
| 1085 | } |
| 1086 | else if (strcasecmp(cmd, "fail") == 0) { |
| 1087 | check->health = 0; |
| 1088 | status = HCHK_STATUS_L7STS; |
| 1089 | hs = cmd; |
| 1090 | } |
| 1091 | /* admin statuses */ |
| 1092 | else if (strcasecmp(cmd, "ready") == 0) { |
| 1093 | as = cmd; |
| 1094 | } |
| 1095 | else if (strcasecmp(cmd, "drain") == 0) { |
| 1096 | as = cmd; |
| 1097 | } |
| 1098 | else if (strcasecmp(cmd, "maint") == 0) { |
| 1099 | as = cmd; |
| 1100 | } |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 1101 | /* try to parse a weight here and keep the last one */ |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1102 | else if (isdigit((unsigned char)*cmd) && strchr(cmd, '%') != NULL) { |
| 1103 | ps = cmd; |
| 1104 | } |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 1105 | /* try to parse a maxconn here */ |
| 1106 | else if (strncasecmp(cmd, "maxconn:", strlen("maxconn:")) == 0) { |
| 1107 | cs = cmd; |
| 1108 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1109 | else { |
| 1110 | /* keep a copy of the first error */ |
| 1111 | if (!err) |
| 1112 | err = cmd; |
| 1113 | } |
| 1114 | /* skip to next word */ |
| 1115 | cmd = p; |
| 1116 | } |
| 1117 | /* here, cmd points either to \0 or to the beginning of a |
| 1118 | * description. Skip possible leading spaces. |
| 1119 | */ |
| 1120 | while (*cmd == ' ' || *cmd == '\n') |
| 1121 | cmd++; |
| 1122 | |
| 1123 | /* First, update the admin status so that we avoid sending other |
| 1124 | * possibly useless warnings and can also update the health if |
| 1125 | * present after going back up. |
| 1126 | */ |
| 1127 | if (as) { |
| 1128 | if (strcasecmp(as, "drain") == 0) |
| 1129 | srv_adm_set_drain(check->server); |
| 1130 | else if (strcasecmp(as, "maint") == 0) |
| 1131 | srv_adm_set_maint(check->server); |
| 1132 | else |
| 1133 | srv_adm_set_ready(check->server); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1134 | } |
| 1135 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1136 | /* now change weights */ |
| 1137 | if (ps) { |
| 1138 | const char *msg; |
| 1139 | |
| 1140 | msg = server_parse_weight_change_request(s, ps); |
| 1141 | if (!wrn || !*wrn) |
| 1142 | wrn = msg; |
| 1143 | } |
| 1144 | |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 1145 | if (cs) { |
| 1146 | const char *msg; |
| 1147 | |
| 1148 | cs += strlen("maxconn:"); |
| 1149 | |
| 1150 | msg = server_parse_maxconn_change_request(s, cs); |
| 1151 | if (!wrn || !*wrn) |
| 1152 | wrn = msg; |
| 1153 | } |
| 1154 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1155 | /* and finally health status */ |
| 1156 | if (hs) { |
| 1157 | /* We'll report some of the warnings and errors we have |
| 1158 | * here. Down reports are critical, we leave them untouched. |
| 1159 | * Lack of report, or report of 'UP' leaves the room for |
| 1160 | * ERR first, then WARN. |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1161 | */ |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1162 | const char *msg = cmd; |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 1163 | struct buffer *t; |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1164 | |
| 1165 | if (!*msg || status == HCHK_STATUS_L7OKD) { |
| 1166 | if (err && *err) |
| 1167 | msg = err; |
| 1168 | else if (wrn && *wrn) |
| 1169 | msg = wrn; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1170 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1171 | |
| 1172 | t = get_trash_chunk(); |
| 1173 | chunk_printf(t, "via agent : %s%s%s%s", |
| 1174 | hs, *msg ? " (" : "", |
| 1175 | msg, *msg ? ")" : ""); |
| 1176 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1177 | set_server_check_status(check, status, t->area); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1178 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1179 | else if (err && *err) { |
| 1180 | /* No status change but we'd like to report something odd. |
| 1181 | * Just report the current state and copy the message. |
| 1182 | */ |
| 1183 | chunk_printf(&trash, "agent reports an error : %s", err); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1184 | set_server_check_status(check, status/*check->status*/, |
| 1185 | trash.area); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1186 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1187 | } |
| 1188 | else if (wrn && *wrn) { |
| 1189 | /* No status change but we'd like to report something odd. |
| 1190 | * Just report the current state and copy the message. |
| 1191 | */ |
| 1192 | chunk_printf(&trash, "agent warns : %s", wrn); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1193 | set_server_check_status(check, status/*check->status*/, |
| 1194 | trash.area); |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1195 | } |
| 1196 | else |
| 1197 | set_server_check_status(check, status, NULL); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1198 | break; |
| 1199 | } |
| 1200 | |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1201 | case PR_O2_PGSQL_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1202 | if (!done && b_data(&check->bi) < 9) |
Rauf Kuliyev | 38b4156 | 2011-01-04 15:14:13 +0100 | [diff] [blame] | 1203 | goto wait_more_data; |
| 1204 | |
Willy Tarreau | 5488a62 | 2019-08-06 16:26:31 +0200 | [diff] [blame] | 1205 | /* do not reset when closing, servers don't like this */ |
| 1206 | if (conn_ctrl_ready(cs->conn)) |
| 1207 | fdtab[cs->conn->handle.fd].linger_risk = 0; |
| 1208 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1209 | if (b_head(&check->bi)[0] == 'R') { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1210 | set_server_check_status(check, HCHK_STATUS_L7OKD, "PostgreSQL server is ok"); |
Rauf Kuliyev | 38b4156 | 2011-01-04 15:14:13 +0100 | [diff] [blame] | 1211 | } |
| 1212 | else { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1213 | if ((b_head(&check->bi)[0] == 'E') && (b_head(&check->bi)[5]!=0) && (b_head(&check->bi)[6]!=0)) |
| 1214 | desc = &b_head(&check->bi)[6]; |
Rauf Kuliyev | 38b4156 | 2011-01-04 15:14:13 +0100 | [diff] [blame] | 1215 | else |
| 1216 | desc = "PostgreSQL unknown error"; |
| 1217 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1218 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Rauf Kuliyev | 38b4156 | 2011-01-04 15:14:13 +0100 | [diff] [blame] | 1219 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1220 | break; |
| 1221 | |
| 1222 | case PR_O2_REDIS_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1223 | if (!done && b_data(&check->bi) < 7) |
Hervé COMMOWICK | ec032d6 | 2011-08-05 16:23:48 +0200 | [diff] [blame] | 1224 | goto wait_more_data; |
| 1225 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1226 | if (strcmp(b_head(&check->bi), "+PONG\r\n") == 0) { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1227 | set_server_check_status(check, HCHK_STATUS_L7OKD, "Redis server is ok"); |
Hervé COMMOWICK | ec032d6 | 2011-08-05 16:23:48 +0200 | [diff] [blame] | 1228 | } |
| 1229 | else { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1230 | set_server_check_status(check, HCHK_STATUS_L7STS, b_head(&check->bi)); |
Hervé COMMOWICK | ec032d6 | 2011-08-05 16:23:48 +0200 | [diff] [blame] | 1231 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1232 | break; |
| 1233 | |
| 1234 | case PR_O2_MYSQL_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1235 | if (!done && b_data(&check->bi) < 5) |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 1236 | goto wait_more_data; |
| 1237 | |
Willy Tarreau | 5488a62 | 2019-08-06 16:26:31 +0200 | [diff] [blame] | 1238 | /* do not reset when closing, servers don't like this */ |
| 1239 | if (conn_ctrl_ready(cs->conn)) |
| 1240 | fdtab[cs->conn->handle.fd].linger_risk = 0; |
| 1241 | |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1242 | if (s->proxy->check_len == 0) { // old mode |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1243 | if (*(b_head(&check->bi) + 4) != '\xff') { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1244 | /* We set the MySQL Version in description for information purpose |
| 1245 | * FIXME : it can be cool to use MySQL Version for other purpose, |
| 1246 | * like mark as down old MySQL server. |
| 1247 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1248 | if (b_data(&check->bi) > 51) { |
| 1249 | desc = ltrim(b_head(&check->bi) + 5, ' '); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1250 | set_server_check_status(check, HCHK_STATUS_L7OKD, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1251 | } |
| 1252 | else { |
| 1253 | if (!done) |
| 1254 | goto wait_more_data; |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1255 | |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1256 | /* it seems we have a OK packet but without a valid length, |
| 1257 | * it must be a protocol error |
| 1258 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1259 | set_server_check_status(check, HCHK_STATUS_L7RSP, b_head(&check->bi)); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1260 | } |
Hervé COMMOWICK | 698ae00 | 2010-01-12 09:25:13 +0100 | [diff] [blame] | 1261 | } |
| 1262 | else { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1263 | /* An error message is attached in the Error packet */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1264 | desc = ltrim(b_head(&check->bi) + 7, ' '); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1265 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1266 | } |
| 1267 | } else { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1268 | unsigned int first_packet_len = ((unsigned int) *b_head(&check->bi)) + |
| 1269 | (((unsigned int) *(b_head(&check->bi) + 1)) << 8) + |
| 1270 | (((unsigned int) *(b_head(&check->bi) + 2)) << 16); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1271 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1272 | if (b_data(&check->bi) == first_packet_len + 4) { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1273 | /* MySQL Error packet always begin with field_count = 0xff */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1274 | if (*(b_head(&check->bi) + 4) != '\xff') { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1275 | /* We have only one MySQL packet and it is a Handshake Initialization packet |
| 1276 | * but we need to have a second packet to know if it is alright |
| 1277 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1278 | if (!done && b_data(&check->bi) < first_packet_len + 5) |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1279 | goto wait_more_data; |
| 1280 | } |
| 1281 | else { |
| 1282 | /* We have only one packet and it is an Error packet, |
| 1283 | * an error message is attached, so we can display it |
| 1284 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1285 | desc = &b_head(&check->bi)[7]; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1286 | //ha_warning("onlyoneERR: %s\n", desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1287 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1288 | } |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1289 | } else if (b_data(&check->bi) > first_packet_len + 4) { |
| 1290 | unsigned int second_packet_len = ((unsigned int) *(b_head(&check->bi) + first_packet_len + 4)) + |
| 1291 | (((unsigned int) *(b_head(&check->bi) + first_packet_len + 5)) << 8) + |
| 1292 | (((unsigned int) *(b_head(&check->bi) + first_packet_len + 6)) << 16); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1293 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1294 | if (b_data(&check->bi) == first_packet_len + 4 + second_packet_len + 4 ) { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1295 | /* We have 2 packets and that's good */ |
| 1296 | /* Check if the second packet is a MySQL Error packet or not */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1297 | if (*(b_head(&check->bi) + first_packet_len + 8) != '\xff') { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1298 | /* No error packet */ |
| 1299 | /* We set the MySQL Version in description for information purpose */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1300 | desc = &b_head(&check->bi)[5]; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1301 | //ha_warning("2packetOK: %s\n", desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1302 | set_server_check_status(check, HCHK_STATUS_L7OKD, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1303 | } |
| 1304 | else { |
| 1305 | /* An error message is attached in the Error packet |
| 1306 | * so we can display it ! :) |
| 1307 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1308 | desc = &b_head(&check->bi)[first_packet_len+11]; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1309 | //ha_warning("2packetERR: %s\n", desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1310 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1311 | } |
| 1312 | } |
| 1313 | } |
| 1314 | else { |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 1315 | if (!done) |
| 1316 | goto wait_more_data; |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1317 | |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1318 | /* it seems we have a Handshake Initialization packet but without a valid length, |
Hervé COMMOWICK | 698ae00 | 2010-01-12 09:25:13 +0100 | [diff] [blame] | 1319 | * it must be a protocol error |
| 1320 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1321 | desc = &b_head(&check->bi)[5]; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1322 | //ha_warning("protoerr: %s\n", desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1323 | set_server_check_status(check, HCHK_STATUS_L7RSP, desc); |
Hervé COMMOWICK | 698ae00 | 2010-01-12 09:25:13 +0100 | [diff] [blame] | 1324 | } |
| 1325 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1326 | break; |
| 1327 | |
| 1328 | case PR_O2_LDAP_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1329 | if (!done && b_data(&check->bi) < 14) |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1330 | goto wait_more_data; |
| 1331 | |
| 1332 | /* Check if the server speaks LDAP (ASN.1/BER) |
| 1333 | * http://en.wikipedia.org/wiki/Basic_Encoding_Rules |
| 1334 | * http://tools.ietf.org/html/rfc4511 |
| 1335 | */ |
| 1336 | |
| 1337 | /* http://tools.ietf.org/html/rfc4511#section-4.1.1 |
| 1338 | * LDAPMessage: 0x30: SEQUENCE |
| 1339 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1340 | if ((b_data(&check->bi) < 14) || (*(b_head(&check->bi)) != '\x30')) { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1341 | set_server_check_status(check, HCHK_STATUS_L7RSP, "Not LDAPv3 protocol"); |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1342 | } |
| 1343 | else { |
| 1344 | /* size of LDAPMessage */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1345 | msglen = (*(b_head(&check->bi) + 1) & 0x80) ? (*(b_head(&check->bi) + 1) & 0x7f) : 0; |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1346 | |
| 1347 | /* http://tools.ietf.org/html/rfc4511#section-4.2.2 |
| 1348 | * messageID: 0x02 0x01 0x01: INTEGER 1 |
| 1349 | * protocolOp: 0x61: bindResponse |
| 1350 | */ |
| 1351 | if ((msglen > 2) || |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1352 | (memcmp(b_head(&check->bi) + 2 + msglen, "\x02\x01\x01\x61", 4) != 0)) { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1353 | set_server_check_status(check, HCHK_STATUS_L7RSP, "Not LDAPv3 protocol"); |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1354 | goto out_wakeup; |
| 1355 | } |
| 1356 | |
| 1357 | /* size of bindResponse */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1358 | msglen += (*(b_head(&check->bi) + msglen + 6) & 0x80) ? (*(b_head(&check->bi) + msglen + 6) & 0x7f) : 0; |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1359 | |
| 1360 | /* http://tools.ietf.org/html/rfc4511#section-4.1.9 |
| 1361 | * ldapResult: 0x0a 0x01: ENUMERATION |
| 1362 | */ |
| 1363 | if ((msglen > 4) || |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1364 | (memcmp(b_head(&check->bi) + 7 + msglen, "\x0a\x01", 2) != 0)) { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1365 | set_server_check_status(check, HCHK_STATUS_L7RSP, "Not LDAPv3 protocol"); |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1366 | goto out_wakeup; |
| 1367 | } |
| 1368 | |
| 1369 | /* http://tools.ietf.org/html/rfc4511#section-4.1.9 |
| 1370 | * resultCode |
| 1371 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1372 | check->code = *(b_head(&check->bi) + msglen + 9); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1373 | if (check->code) { |
| 1374 | set_server_check_status(check, HCHK_STATUS_L7STS, "See RFC: http://tools.ietf.org/html/rfc4511#section-4.1.9"); |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1375 | } else { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1376 | set_server_check_status(check, HCHK_STATUS_L7OKD, "Success"); |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1377 | } |
| 1378 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1379 | break; |
| 1380 | |
Christopher Faulet | ba7bc16 | 2016-11-07 21:07:38 +0100 | [diff] [blame] | 1381 | case PR_O2_SPOP_CHK: { |
| 1382 | unsigned int framesz; |
| 1383 | char err[HCHK_DESC_LEN]; |
| 1384 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1385 | if (!done && b_data(&check->bi) < 4) |
Christopher Faulet | ba7bc16 | 2016-11-07 21:07:38 +0100 | [diff] [blame] | 1386 | goto wait_more_data; |
| 1387 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1388 | memcpy(&framesz, b_head(&check->bi), 4); |
Christopher Faulet | ba7bc16 | 2016-11-07 21:07:38 +0100 | [diff] [blame] | 1389 | framesz = ntohl(framesz); |
| 1390 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1391 | if (!done && b_data(&check->bi) < (4+framesz)) |
Christopher Faulet | ba7bc16 | 2016-11-07 21:07:38 +0100 | [diff] [blame] | 1392 | goto wait_more_data; |
| 1393 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1394 | if (!spoe_handle_healthcheck_response(b_head(&check->bi)+4, framesz, err, HCHK_DESC_LEN-1)) |
Christopher Faulet | ba7bc16 | 2016-11-07 21:07:38 +0100 | [diff] [blame] | 1395 | set_server_check_status(check, HCHK_STATUS_L7OKD, "SPOA server is ok"); |
| 1396 | else |
| 1397 | set_server_check_status(check, HCHK_STATUS_L7STS, err); |
| 1398 | break; |
| 1399 | } |
| 1400 | |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1401 | default: |
Willy Tarreau | 4c1a2b3 | 2019-09-05 18:43:22 +0200 | [diff] [blame] | 1402 | /* good connection is enough for pure TCP check */ |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 1403 | if (!(conn->flags & CO_FL_WAIT_XPRT) && !check->type) { |
Christopher Faulet | f61f33a | 2020-03-27 18:55:49 +0100 | [diff] [blame] | 1404 | if (check->use_ssl == 1) |
Willy Tarreau | 4c1a2b3 | 2019-09-05 18:43:22 +0200 | [diff] [blame] | 1405 | set_server_check_status(check, HCHK_STATUS_L6OK, NULL); |
| 1406 | else |
| 1407 | set_server_check_status(check, HCHK_STATUS_L4OK, NULL); |
| 1408 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1409 | break; |
| 1410 | } /* switch */ |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 1411 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 1412 | out_wakeup: |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 1413 | /* collect possible new errors */ |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 1414 | if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 1415 | chk_report_conn_err(check, 0, 0); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1416 | |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 1417 | /* Reset the check buffer... */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1418 | *b_head(&check->bi) = '\0'; |
| 1419 | b_reset(&check->bi); |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 1420 | |
Steven Davidovitz | 544d481 | 2017-03-08 11:06:20 -0800 | [diff] [blame] | 1421 | /* Close the connection... We still attempt to nicely close if, |
| 1422 | * for instance, SSL needs to send a "close notify." Later, we perform |
| 1423 | * a hard close and reset the connection if some data are pending, |
| 1424 | * otherwise we end up with many TIME_WAITs and eat all the source port |
| 1425 | * range quickly. To avoid sending RSTs all the time, we first try to |
| 1426 | * drain pending data. |
Willy Tarreau | fd29cc5 | 2012-11-23 09:18:20 +0100 | [diff] [blame] | 1427 | */ |
Olivier Houchard | 6c7e96a | 2019-07-02 16:35:18 +0200 | [diff] [blame] | 1428 | /* Call cs_shutr() first, to add the CO_FL_SOCK_RD_SH flag on the |
| 1429 | * connection, to make sure cs_shutw() will not lead to a shutdown() |
| 1430 | * that would provoke TIME_WAITs. |
| 1431 | */ |
| 1432 | cs_shutr(cs, CS_SHR_DRAIN); |
Willy Tarreau | ecdb3fe | 2017-10-05 15:25:48 +0200 | [diff] [blame] | 1433 | cs_shutw(cs, CS_SHW_NORMAL); |
Willy Tarreau | 2b57cb8 | 2013-06-10 19:56:38 +0200 | [diff] [blame] | 1434 | |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 1435 | /* OK, let's not stay here forever */ |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 1436 | if (check->result == CHK_RES_FAILED) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 1437 | conn->flags |= CO_FL_ERROR; |
| 1438 | |
Willy Tarreau | fdccded | 2008-08-29 18:19:04 +0200 | [diff] [blame] | 1439 | task_wakeup(t, TASK_WOKEN_IO); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 1440 | out: |
Willy Tarreau | 3267d36 | 2012-08-17 23:53:56 +0200 | [diff] [blame] | 1441 | return; |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 1442 | |
| 1443 | wait_more_data: |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 1444 | cs->conn->mux->subscribe(cs, SUB_RETRY_RECV, &check->wait_list); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 1445 | goto out; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1446 | } |
| 1447 | |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1448 | /* |
| 1449 | * This function is used only for server health-checks. It handles connection |
| 1450 | * status updates including errors. If necessary, it wakes the check task up. |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1451 | * It returns 0 on normal cases, <0 if at least one close() has happened on the |
| 1452 | * connection (eg: reconnect). |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1453 | */ |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1454 | static int wake_srv_chk(struct conn_stream *cs) |
Willy Tarreau | 20bea42 | 2012-07-06 12:00:49 +0200 | [diff] [blame] | 1455 | { |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1456 | struct connection *conn = cs->conn; |
| 1457 | struct check *check = cs->data; |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 1458 | struct email_alertq *q = container_of(check, typeof(*q), check); |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1459 | int ret = 0; |
Willy Tarreau | 20bea42 | 2012-07-06 12:00:49 +0200 | [diff] [blame] | 1460 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 1461 | if (check->server) |
| 1462 | HA_SPIN_LOCK(SERVER_LOCK, &check->server->lock); |
| 1463 | else |
| 1464 | HA_SPIN_LOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Emeric Brun | f6ba17d | 2017-11-02 14:35:27 +0100 | [diff] [blame] | 1465 | |
Willy Tarreau | c09572f | 2017-10-04 11:58:22 +0200 | [diff] [blame] | 1466 | /* we may have to make progress on the TCP checks */ |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1467 | if (check->type == PR_O2_TCPCHK_CHK) { |
| 1468 | ret = tcpcheck_main(check); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1469 | cs = check->cs; |
Willy Tarreau | 543abd4 | 2018-09-20 11:25:12 +0200 | [diff] [blame] | 1470 | conn = cs->conn; |
Willy Tarreau | c594039 | 2019-09-05 17:38:40 +0200 | [diff] [blame] | 1471 | } else { |
| 1472 | if (!(check->wait_list.events & SUB_RETRY_SEND)) |
| 1473 | __event_srv_chk_w(cs); |
| 1474 | if (!(check->wait_list.events & SUB_RETRY_RECV)) |
| 1475 | __event_srv_chk_r(cs); |
| 1476 | } |
Willy Tarreau | c09572f | 2017-10-04 11:58:22 +0200 | [diff] [blame] | 1477 | |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 1478 | if (unlikely(conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR)) { |
Willy Tarreau | 02b0f58 | 2013-12-03 15:42:33 +0100 | [diff] [blame] | 1479 | /* We may get error reports bypassing the I/O handlers, typically |
| 1480 | * the case when sending a pure TCP check which fails, then the I/O |
| 1481 | * handlers above are not called. This is completely handled by the |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 1482 | * main processing task so let's simply wake it up. If we get here, |
| 1483 | * we expect errno to still be valid. |
| 1484 | */ |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 1485 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | 2d351b6 | 2013-12-05 02:36:25 +0100 | [diff] [blame] | 1486 | task_wakeup(check->task, TASK_WOKEN_IO); |
| 1487 | } |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 1488 | else if (!(conn->flags & CO_FL_WAIT_XPRT) && !check->type) { |
Willy Tarreau | 3be293f | 2014-02-05 18:31:24 +0100 | [diff] [blame] | 1489 | /* we may get here if only a connection probe was required : we |
| 1490 | * don't have any data to send nor anything expected in response, |
| 1491 | * so the completion of the connection establishment is enough. |
| 1492 | */ |
| 1493 | task_wakeup(check->task, TASK_WOKEN_IO); |
| 1494 | } |
Willy Tarreau | 2d351b6 | 2013-12-05 02:36:25 +0100 | [diff] [blame] | 1495 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 1496 | if (check->result != CHK_RES_UNKNOWN) { |
Christopher Faulet | 774c486 | 2019-01-21 14:15:50 +0100 | [diff] [blame] | 1497 | /* Check complete or aborted. If connection not yet closed do it |
| 1498 | * now and wake the check task up to be sure the result is |
| 1499 | * handled ASAP. */ |
Willy Tarreau | d85c485 | 2015-03-13 00:40:28 +0100 | [diff] [blame] | 1500 | conn_sock_drain(conn); |
Willy Tarreau | a553ae9 | 2017-10-05 18:52:17 +0200 | [diff] [blame] | 1501 | cs_close(cs); |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1502 | ret = -1; |
Olivier Houchard | f494957 | 2019-07-02 17:42:22 +0200 | [diff] [blame] | 1503 | /* We may have been scheduled to run, and the |
| 1504 | * I/O handler expects to have a cs, so remove |
| 1505 | * the tasklet |
| 1506 | */ |
| 1507 | tasklet_remove_from_tasklet_list(check->wait_list.tasklet); |
Christopher Faulet | 774c486 | 2019-01-21 14:15:50 +0100 | [diff] [blame] | 1508 | task_wakeup(check->task, TASK_WOKEN_IO); |
Willy Tarreau | 2d351b6 | 2013-12-05 02:36:25 +0100 | [diff] [blame] | 1509 | } |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1510 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 1511 | if (check->server) |
| 1512 | HA_SPIN_UNLOCK(SERVER_LOCK, &check->server->lock); |
| 1513 | else |
| 1514 | HA_SPIN_UNLOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Emeric Brun | f6ba17d | 2017-11-02 14:35:27 +0100 | [diff] [blame] | 1515 | |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1516 | /* if a connection got replaced, we must absolutely prevent the connection |
| 1517 | * handler from touching its fd, and perform the FD polling updates ourselves |
| 1518 | */ |
| 1519 | if (ret < 0) |
| 1520 | conn_cond_update_polling(conn); |
| 1521 | |
| 1522 | return ret; |
Willy Tarreau | 20bea42 | 2012-07-06 12:00:49 +0200 | [diff] [blame] | 1523 | } |
| 1524 | |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1525 | struct data_cb check_conn_cb = { |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1526 | .wake = wake_srv_chk, |
Willy Tarreau | 8e0bb0a | 2016-11-24 16:58:12 +0100 | [diff] [blame] | 1527 | .name = "CHCK", |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1528 | }; |
| 1529 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1530 | /* |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1531 | * updates the server's weight during a warmup stage. Once the final weight is |
| 1532 | * reached, the task automatically stops. Note that any server status change |
| 1533 | * must have updated s->last_change accordingly. |
| 1534 | */ |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 1535 | static struct task *server_warmup(struct task *t, void *context, unsigned short state) |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1536 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 1537 | struct server *s = context; |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1538 | |
| 1539 | /* by default, plan on stopping the task */ |
| 1540 | t->expire = TICK_ETERNITY; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1541 | if ((s->next_admin & SRV_ADMF_MAINT) || |
| 1542 | (s->next_state != SRV_ST_STARTING)) |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1543 | return t; |
| 1544 | |
Willy Tarreau | 4fc49a9 | 2019-05-05 06:54:22 +0200 | [diff] [blame] | 1545 | HA_SPIN_LOCK(SERVER_LOCK, &s->lock); |
| 1546 | |
Willy Tarreau | 892337c | 2014-05-13 23:41:20 +0200 | [diff] [blame] | 1547 | /* recalculate the weights and update the state */ |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 1548 | server_recalc_eweight(s, 1); |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1549 | |
| 1550 | /* probably that we can refill this server with a bit more connections */ |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1551 | pendconn_grab_from_px(s); |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1552 | |
Willy Tarreau | 4fc49a9 | 2019-05-05 06:54:22 +0200 | [diff] [blame] | 1553 | HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock); |
| 1554 | |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1555 | /* get back there in 1 second or 1/20th of the slowstart interval, |
| 1556 | * whichever is greater, resulting in small 5% steps. |
| 1557 | */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1558 | if (s->next_state == SRV_ST_STARTING) |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1559 | t->expire = tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20))); |
| 1560 | return t; |
| 1561 | } |
| 1562 | |
Willy Tarreau | 894c642 | 2017-10-04 15:58:52 +0200 | [diff] [blame] | 1563 | /* returns the first NON-COMMENT tcp-check rule from list <list> or NULL if |
| 1564 | * none was found. |
| 1565 | */ |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 1566 | static struct tcpcheck_rule *get_first_tcpcheck_rule(struct tcpcheck_rules *rules) |
Willy Tarreau | 894c642 | 2017-10-04 15:58:52 +0200 | [diff] [blame] | 1567 | { |
| 1568 | struct tcpcheck_rule *r; |
| 1569 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 1570 | list_for_each_entry(r, rules->list, list) { |
Gaetan Rivet | 707b52f | 2020-02-21 18:14:59 +0100 | [diff] [blame] | 1571 | if (r->action != TCPCHK_ACT_COMMENT && r->action != TCPCHK_ACT_ACTION_KW) |
Willy Tarreau | 894c642 | 2017-10-04 15:58:52 +0200 | [diff] [blame] | 1572 | return r; |
| 1573 | } |
| 1574 | return NULL; |
| 1575 | } |
| 1576 | |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 1577 | /* returns the NON-COMMENT tcp-check rule from list <list> following <start> or |
| 1578 | * NULL if non was found. If <start> is NULL, it relies on |
| 1579 | * get_first_tcpcheck_rule(). |
| 1580 | */ |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 1581 | static struct tcpcheck_rule *get_next_tcpcheck_rule(struct tcpcheck_rules *rules, struct tcpcheck_rule *start) |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 1582 | { |
| 1583 | struct tcpcheck_rule *r; |
| 1584 | |
| 1585 | if (!start) |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 1586 | return get_first_tcpcheck_rule(rules); |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 1587 | |
| 1588 | r = LIST_NEXT(&start->list, typeof(r), list); |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 1589 | list_for_each_entry_from(r, rules->list, list) { |
Gaetan Rivet | 707b52f | 2020-02-21 18:14:59 +0100 | [diff] [blame] | 1590 | if (r->action != TCPCHK_ACT_COMMENT && r->action != TCPCHK_ACT_ACTION_KW) |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 1591 | return r; |
| 1592 | } |
| 1593 | return NULL; |
| 1594 | } |
| 1595 | |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1596 | /* |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1597 | * establish a server health-check that makes use of a connection. |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1598 | * |
| 1599 | * It can return one of : |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1600 | * - SF_ERR_NONE if everything's OK and tcpcheck_main() was not called |
| 1601 | * - SF_ERR_UP if if everything's OK and tcpcheck_main() was called |
| 1602 | * - SF_ERR_SRVTO if there are no more servers |
| 1603 | * - SF_ERR_SRVCL if the connection was refused by the server |
| 1604 | * - SF_ERR_PRXCOND if the connection has been limited by the proxy (maxconn) |
| 1605 | * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...) |
| 1606 | * - SF_ERR_INTERNAL for any other purely internal errors |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 1607 | * - SF_ERR_CHK_PORT if no port could be found to run a health check on an AF_INET* socket |
Tim Düsterhus | 4896c44 | 2016-11-29 02:15:19 +0100 | [diff] [blame] | 1608 | * Additionally, in the case of SF_ERR_RESOURCE, an emergency log will be emitted. |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1609 | * Note that we try to prevent the network stack from sending the ACK during the |
| 1610 | * connect() when a pure TCP check is used (without PROXY protocol). |
| 1611 | */ |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1612 | static int connect_conn_chk(struct task *t) |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1613 | { |
| 1614 | struct check *check = t->context; |
| 1615 | struct server *s = check->server; |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1616 | struct conn_stream *cs = check->cs; |
| 1617 | struct connection *conn = cs_conn(cs); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1618 | struct protocol *proto; |
| 1619 | int ret; |
Olivier Houchard | fdcb007 | 2019-05-06 18:32:29 +0200 | [diff] [blame] | 1620 | int connflags = 0; |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1621 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 1622 | /* we cannot have a connection here */ |
| 1623 | if (conn) |
| 1624 | return SF_ERR_INTERNAL; |
| 1625 | |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1626 | /* prepare the check buffer. |
| 1627 | * This should not be used if check is the secondary agent check |
| 1628 | * of a server as s->proxy->check_req will relate to the |
| 1629 | * configuration of the primary check. Similarly, tcp-check uses |
| 1630 | * its own strings. |
| 1631 | */ |
| 1632 | if (check->type && check->type != PR_O2_TCPCHK_CHK && !(check->state & CHK_ST_AGENT)) { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1633 | b_putblk(&check->bo, s->proxy->check_req, s->proxy->check_len); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1634 | |
| 1635 | /* we want to check if this host replies to HTTP or SSLv3 requests |
| 1636 | * so we'll send the request, and won't wake the checker up now. |
| 1637 | */ |
| 1638 | if ((check->type) == PR_O2_SSL3_CHK) { |
| 1639 | /* SSL requires that we put Unix time in the request */ |
| 1640 | int gmt_time = htonl(date.tv_sec); |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1641 | memcpy(b_head(&check->bo) + 11, &gmt_time, 4); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1642 | } |
| 1643 | else if ((check->type) == PR_O2_HTTP_CHK) { |
Cyril Bonté | 32602d2 | 2015-01-30 00:07:07 +0100 | [diff] [blame] | 1644 | /* prevent HTTP keep-alive when "http-check expect" is used */ |
| 1645 | if (s->proxy->options2 & PR_O2_EXP_TYPE) |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1646 | b_putist(&check->bo, ist("Connection: close\r\n")); |
Christopher Faulet | 8acb128 | 2020-04-09 08:44:06 +0200 | [diff] [blame] | 1647 | |
| 1648 | /* If there is a body, add its content-length */ |
| 1649 | if (s->proxy->check_body_len) |
| 1650 | chunk_appendf(&check->bo, "Content-Length: %s\r\n", ultoa(s->proxy->check_body_len)); |
| 1651 | |
| 1652 | /* Add configured headers */ |
| 1653 | if (s->proxy->check_hdrs) |
| 1654 | b_putblk(&check->bo, s->proxy->check_hdrs, s->proxy->check_hdrs_len); |
| 1655 | |
| 1656 | /* Add send-state header */ |
| 1657 | if (s->proxy->options2 & PR_O2_CHK_SNDST) |
| 1658 | b_putblk(&check->bo, trash.area, |
| 1659 | httpchk_build_status_header(s, trash.area, trash.size)); |
| 1660 | |
| 1661 | /* end-of-header */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1662 | b_putist(&check->bo, ist("\r\n")); |
Christopher Faulet | 8acb128 | 2020-04-09 08:44:06 +0200 | [diff] [blame] | 1663 | |
| 1664 | /* Add the body */ |
| 1665 | if (s->proxy->check_body) |
| 1666 | b_putblk(&check->bo, s->proxy->check_body, s->proxy->check_body_len); |
| 1667 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1668 | *b_tail(&check->bo) = '\0'; /* to make gdb output easier to read */ |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1669 | } |
| 1670 | } |
| 1671 | |
James Brown | 55f9ff1 | 2015-10-21 18:19:05 -0700 | [diff] [blame] | 1672 | if ((check->type & PR_O2_LB_AGENT_CHK) && check->send_string_len) { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1673 | b_putblk(&check->bo, check->send_string, check->send_string_len); |
James Brown | 55f9ff1 | 2015-10-21 18:19:05 -0700 | [diff] [blame] | 1674 | } |
| 1675 | |
Willy Tarreau | f411cce | 2017-10-04 16:21:19 +0200 | [diff] [blame] | 1676 | /* for tcp-checks, the initial connection setup is handled separately as |
| 1677 | * it may be sent to a specific port and not to the server's. |
| 1678 | */ |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 1679 | if (check->type == PR_O2_TCPCHK_CHK) { |
| 1680 | /* tcpcheck initialisation */ |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 1681 | check->current_step = NULL; |
Willy Tarreau | f411cce | 2017-10-04 16:21:19 +0200 | [diff] [blame] | 1682 | tcpcheck_main(check); |
| 1683 | return SF_ERR_UP; |
| 1684 | } |
| 1685 | |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1686 | /* prepare a new connection */ |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1687 | cs = check->cs = cs_new(NULL); |
| 1688 | if (!check->cs) |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 1689 | return SF_ERR_RESOURCE; |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1690 | conn = cs->conn; |
Olivier Houchard | 26e1a8f | 2018-09-12 15:15:12 +0200 | [diff] [blame] | 1691 | /* Maybe there were an older connection we were waiting on */ |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 1692 | check->wait_list.events = 0; |
Olivier Houchard | ff1e9f3 | 2019-09-20 17:18:35 +0200 | [diff] [blame] | 1693 | tasklet_set_tid(check->wait_list.tasklet, tid); |
| 1694 | |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1695 | |
Willy Tarreau | ca79f59 | 2019-07-17 19:04:47 +0200 | [diff] [blame] | 1696 | if (!sockaddr_alloc(&conn->dst)) |
| 1697 | return SF_ERR_RESOURCE; |
| 1698 | |
Simon Horman | 41f5876 | 2015-01-30 11:22:56 +0900 | [diff] [blame] | 1699 | if (is_addr(&check->addr)) { |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1700 | /* we'll connect to the check addr specified on the server */ |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1701 | *conn->dst = check->addr; |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1702 | } |
| 1703 | else { |
| 1704 | /* we'll connect to the addr on the server */ |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1705 | *conn->dst = s->addr; |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1706 | } |
| 1707 | |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1708 | if (s->check.via_socks4 && (s->flags & SRV_F_SOCKS4_PROXY)) { |
| 1709 | conn->send_proxy_ofs = 1; |
| 1710 | conn->flags |= CO_FL_SOCKS4; |
| 1711 | } |
| 1712 | |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1713 | proto = protocol_by_family(conn->dst->ss_family); |
Olivier Houchard | 6377a00 | 2017-12-01 22:04:05 +0100 | [diff] [blame] | 1714 | conn->target = &s->obj_type; |
| 1715 | |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1716 | if ((conn->dst->ss_family == AF_INET) || (conn->dst->ss_family == AF_INET6)) { |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 1717 | int i = 0; |
| 1718 | |
| 1719 | i = srv_check_healthcheck_port(check); |
Olivier Houchard | 6377a00 | 2017-12-01 22:04:05 +0100 | [diff] [blame] | 1720 | if (i == 0) |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 1721 | return SF_ERR_CHK_PORT; |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 1722 | |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1723 | set_host_port(conn->dst, i); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1724 | } |
| 1725 | |
Thierry FOURNIER | bb2ae64 | 2015-01-14 11:31:49 +0100 | [diff] [blame] | 1726 | /* no client address */ |
Thierry FOURNIER | bb2ae64 | 2015-01-14 11:31:49 +0100 | [diff] [blame] | 1727 | |
Willy Tarreau | be37315 | 2018-09-06 11:45:30 +0200 | [diff] [blame] | 1728 | conn_prepare(conn, proto, check->xprt); |
Olivier Houchard | f67be93 | 2019-01-29 15:47:43 +0100 | [diff] [blame] | 1729 | if (conn_install_mux(conn, &mux_pt_ops, cs, s->proxy, NULL) < 0) |
| 1730 | return SF_ERR_RESOURCE; |
Willy Tarreau | be37315 | 2018-09-06 11:45:30 +0200 | [diff] [blame] | 1731 | cs_attach(cs, check, &check_conn_cb); |
| 1732 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 1733 | /* only plain tcp check supports quick ACK */ |
| 1734 | connflags |= (check->type ? CONNECT_HAS_DATA : CONNECT_DELACK_ALWAYS); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1735 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1736 | ret = SF_ERR_INTERNAL; |
Olivier Houchard | b68fda4 | 2017-08-04 18:39:01 +0200 | [diff] [blame] | 1737 | if (proto && proto->connect) |
Olivier Houchard | fdcb007 | 2019-05-06 18:32:29 +0200 | [diff] [blame] | 1738 | ret = proto->connect(conn, connflags); |
Willy Tarreau | 16257f6 | 2017-11-02 15:45:00 +0100 | [diff] [blame] | 1739 | |
Willy Tarreau | 16257f6 | 2017-11-02 15:45:00 +0100 | [diff] [blame] | 1740 | |
Olivier Houchard | 9130a96 | 2017-10-17 17:33:43 +0200 | [diff] [blame] | 1741 | #ifdef USE_OPENSSL |
Olivier Houchard | a48437b | 2019-01-29 16:37:52 +0100 | [diff] [blame] | 1742 | if (ret == SF_ERR_NONE) { |
| 1743 | if (s->check.sni) |
| 1744 | ssl_sock_set_servername(conn, s->check.sni); |
| 1745 | if (s->check.alpn_str) |
| 1746 | ssl_sock_set_alpn(conn, (unsigned char *)s->check.alpn_str, |
| 1747 | s->check.alpn_len); |
| 1748 | } |
Olivier Houchard | 9130a96 | 2017-10-17 17:33:43 +0200 | [diff] [blame] | 1749 | #endif |
Willy Tarreau | f494977 | 2017-05-06 08:45:28 +0200 | [diff] [blame] | 1750 | if (s->check.send_proxy && !(check->state & CHK_ST_AGENT)) { |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1751 | conn->send_proxy_ofs = 1; |
| 1752 | conn->flags |= CO_FL_SEND_PROXY; |
Olivier Houchard | 37d7897 | 2019-12-30 15:13:42 +0100 | [diff] [blame] | 1753 | } |
| 1754 | if (conn->flags & (CO_FL_SEND_PROXY | CO_FL_SOCKS4) && |
| 1755 | conn_ctrl_ready(conn)) { |
Olivier Houchard | fe50bfb | 2019-05-27 12:09:19 +0200 | [diff] [blame] | 1756 | if (xprt_add_hs(conn) < 0) |
| 1757 | ret = SF_ERR_RESOURCE; |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1758 | } |
| 1759 | |
| 1760 | return ret; |
| 1761 | } |
| 1762 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1763 | static struct list pid_list = LIST_HEAD_INIT(pid_list); |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1764 | static struct pool_head *pool_head_pid_list; |
Willy Tarreau | 86abe44 | 2018-11-25 20:12:18 +0100 | [diff] [blame] | 1765 | __decl_spinlock(pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1766 | |
| 1767 | void block_sigchld(void) |
| 1768 | { |
| 1769 | sigset_t set; |
| 1770 | sigemptyset(&set); |
| 1771 | sigaddset(&set, SIGCHLD); |
William Lallemand | 6e1796e | 2018-06-07 11:23:40 +0200 | [diff] [blame] | 1772 | assert(ha_sigmask(SIG_BLOCK, &set, NULL) == 0); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1773 | } |
| 1774 | |
| 1775 | void unblock_sigchld(void) |
| 1776 | { |
| 1777 | sigset_t set; |
| 1778 | sigemptyset(&set); |
Willy Tarreau | ebc9244 | 2016-06-21 17:29:46 +0200 | [diff] [blame] | 1779 | sigaddset(&set, SIGCHLD); |
William Lallemand | 6e1796e | 2018-06-07 11:23:40 +0200 | [diff] [blame] | 1780 | assert(ha_sigmask(SIG_UNBLOCK, &set, NULL) == 0); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1781 | } |
| 1782 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1783 | static struct pid_list *pid_list_add(pid_t pid, struct task *t) |
| 1784 | { |
| 1785 | struct pid_list *elem; |
| 1786 | struct check *check = t->context; |
| 1787 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1788 | elem = pool_alloc(pool_head_pid_list); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1789 | if (!elem) |
| 1790 | return NULL; |
| 1791 | elem->pid = pid; |
| 1792 | elem->t = t; |
| 1793 | elem->exited = 0; |
| 1794 | check->curpid = elem; |
| 1795 | LIST_INIT(&elem->list); |
Christopher Faulet | cfda847 | 2017-10-20 15:40:23 +0200 | [diff] [blame] | 1796 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1797 | HA_SPIN_LOCK(PID_LIST_LOCK, &pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1798 | LIST_ADD(&pid_list, &elem->list); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1799 | HA_SPIN_UNLOCK(PID_LIST_LOCK, &pid_list_lock); |
Christopher Faulet | cfda847 | 2017-10-20 15:40:23 +0200 | [diff] [blame] | 1800 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1801 | return elem; |
| 1802 | } |
| 1803 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1804 | static void pid_list_del(struct pid_list *elem) |
| 1805 | { |
| 1806 | struct check *check; |
| 1807 | |
| 1808 | if (!elem) |
| 1809 | return; |
| 1810 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1811 | HA_SPIN_LOCK(PID_LIST_LOCK, &pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1812 | LIST_DEL(&elem->list); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1813 | HA_SPIN_UNLOCK(PID_LIST_LOCK, &pid_list_lock); |
Christopher Faulet | cfda847 | 2017-10-20 15:40:23 +0200 | [diff] [blame] | 1814 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1815 | if (!elem->exited) |
| 1816 | kill(elem->pid, SIGTERM); |
| 1817 | |
| 1818 | check = elem->t->context; |
| 1819 | check->curpid = NULL; |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1820 | pool_free(pool_head_pid_list, elem); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1821 | } |
| 1822 | |
| 1823 | /* Called from inside SIGCHLD handler, SIGCHLD is blocked */ |
| 1824 | static void pid_list_expire(pid_t pid, int status) |
| 1825 | { |
| 1826 | struct pid_list *elem; |
| 1827 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1828 | HA_SPIN_LOCK(PID_LIST_LOCK, &pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1829 | list_for_each_entry(elem, &pid_list, list) { |
| 1830 | if (elem->pid == pid) { |
| 1831 | elem->t->expire = now_ms; |
| 1832 | elem->status = status; |
| 1833 | elem->exited = 1; |
Cyril Bonté | 9dbcfab | 2014-08-07 01:55:39 +0200 | [diff] [blame] | 1834 | task_wakeup(elem->t, TASK_WOKEN_IO); |
Christopher Faulet | cfda847 | 2017-10-20 15:40:23 +0200 | [diff] [blame] | 1835 | break; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1836 | } |
| 1837 | } |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1838 | HA_SPIN_UNLOCK(PID_LIST_LOCK, &pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1839 | } |
| 1840 | |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 1841 | static void sigchld_handler(struct sig_handler *sh) |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1842 | { |
| 1843 | pid_t pid; |
| 1844 | int status; |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 1845 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1846 | while ((pid = waitpid(0, &status, WNOHANG)) > 0) |
| 1847 | pid_list_expire(pid, status); |
| 1848 | } |
| 1849 | |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 1850 | static int init_pid_list(void) |
| 1851 | { |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1852 | if (pool_head_pid_list != NULL) |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1853 | /* Nothing to do */ |
| 1854 | return 0; |
| 1855 | |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 1856 | if (!signal_register_fct(SIGCHLD, sigchld_handler, SIGCHLD)) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1857 | ha_alert("Failed to set signal handler for external health checks: %s. Aborting.\n", |
| 1858 | strerror(errno)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1859 | return 1; |
| 1860 | } |
| 1861 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1862 | pool_head_pid_list = create_pool("pid_list", sizeof(struct pid_list), MEM_F_SHARED); |
| 1863 | if (pool_head_pid_list == NULL) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1864 | ha_alert("Failed to allocate memory pool for external health checks: %s. Aborting.\n", |
| 1865 | strerror(errno)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1866 | return 1; |
| 1867 | } |
| 1868 | |
| 1869 | return 0; |
| 1870 | } |
| 1871 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1872 | /* helper macro to set an environment variable and jump to a specific label on failure. */ |
| 1873 | #define EXTCHK_SETENV(check, envidx, value, fail) { if (extchk_setenv(check, envidx, value)) goto fail; } |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1874 | |
| 1875 | /* |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1876 | * helper function to allocate enough memory to store an environment variable. |
| 1877 | * It will also check that the environment variable is updatable, and silently |
| 1878 | * fail if not. |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1879 | */ |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1880 | static int extchk_setenv(struct check *check, int idx, const char *value) |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1881 | { |
| 1882 | int len, ret; |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1883 | char *envname; |
| 1884 | int vmaxlen; |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1885 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1886 | if (idx < 0 || idx >= EXTCHK_SIZE) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1887 | ha_alert("Illegal environment variable index %d. Aborting.\n", idx); |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1888 | return 1; |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1889 | } |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1890 | |
| 1891 | envname = extcheck_envs[idx].name; |
| 1892 | vmaxlen = extcheck_envs[idx].vmaxlen; |
| 1893 | |
| 1894 | /* Check if the environment variable is already set, and silently reject |
| 1895 | * the update if this one is not updatable. */ |
| 1896 | if ((vmaxlen == EXTCHK_SIZE_EVAL_INIT) && (check->envp[idx])) |
| 1897 | return 0; |
| 1898 | |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1899 | /* Instead of sending NOT_USED, sending an empty value is preferable */ |
| 1900 | if (strcmp(value, "NOT_USED") == 0) { |
| 1901 | value = ""; |
| 1902 | } |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1903 | |
| 1904 | len = strlen(envname) + 1; |
| 1905 | if (vmaxlen == EXTCHK_SIZE_EVAL_INIT) |
| 1906 | len += strlen(value); |
| 1907 | else |
| 1908 | len += vmaxlen; |
| 1909 | |
| 1910 | if (!check->envp[idx]) |
| 1911 | check->envp[idx] = malloc(len + 1); |
| 1912 | |
| 1913 | if (!check->envp[idx]) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1914 | ha_alert("Failed to allocate memory for the environment variable '%s'. Aborting.\n", envname); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1915 | return 1; |
| 1916 | } |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1917 | ret = snprintf(check->envp[idx], len + 1, "%s=%s", envname, value); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1918 | if (ret < 0) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1919 | ha_alert("Failed to store the environment variable '%s'. Reason : %s. Aborting.\n", envname, strerror(errno)); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1920 | return 1; |
| 1921 | } |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1922 | else if (ret > len) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1923 | ha_alert("Environment variable '%s' was truncated. Aborting.\n", envname); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1924 | return 1; |
| 1925 | } |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1926 | return 0; |
| 1927 | } |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1928 | |
| 1929 | static int prepare_external_check(struct check *check) |
| 1930 | { |
| 1931 | struct server *s = check->server; |
| 1932 | struct proxy *px = s->proxy; |
| 1933 | struct listener *listener = NULL, *l; |
| 1934 | int i; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1935 | const char *path = px->check_path ? px->check_path : DEF_CHECK_PATH; |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1936 | char buf[256]; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1937 | |
| 1938 | list_for_each_entry(l, &px->conf.listeners, by_fe) |
| 1939 | /* Use the first INET, INET6 or UNIX listener */ |
| 1940 | if (l->addr.ss_family == AF_INET || |
| 1941 | l->addr.ss_family == AF_INET6 || |
| 1942 | l->addr.ss_family == AF_UNIX) { |
| 1943 | listener = l; |
| 1944 | break; |
| 1945 | } |
| 1946 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1947 | check->curpid = NULL; |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1948 | check->envp = calloc((EXTCHK_SIZE + 1), sizeof(char *)); |
| 1949 | if (!check->envp) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1950 | ha_alert("Failed to allocate memory for environment variables. Aborting\n"); |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1951 | goto err; |
| 1952 | } |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1953 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1954 | check->argv = calloc(6, sizeof(char *)); |
| 1955 | if (!check->argv) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1956 | ha_alert("Starting [%s:%s] check: out of memory.\n", px->id, s->id); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1957 | goto err; |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1958 | } |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1959 | |
| 1960 | check->argv[0] = px->check_command; |
| 1961 | |
Cyril Bonté | 777be86 | 2014-12-02 21:21:35 +0100 | [diff] [blame] | 1962 | if (!listener) { |
| 1963 | check->argv[1] = strdup("NOT_USED"); |
| 1964 | check->argv[2] = strdup("NOT_USED"); |
| 1965 | } |
| 1966 | else if (listener->addr.ss_family == AF_INET || |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1967 | listener->addr.ss_family == AF_INET6) { |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1968 | addr_to_str(&listener->addr, buf, sizeof(buf)); |
| 1969 | check->argv[1] = strdup(buf); |
| 1970 | port_to_str(&listener->addr, buf, sizeof(buf)); |
| 1971 | check->argv[2] = strdup(buf); |
Cyril Bonté | 777be86 | 2014-12-02 21:21:35 +0100 | [diff] [blame] | 1972 | } |
| 1973 | else if (listener->addr.ss_family == AF_UNIX) { |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1974 | const struct sockaddr_un *un; |
| 1975 | |
| 1976 | un = (struct sockaddr_un *)&listener->addr; |
| 1977 | check->argv[1] = strdup(un->sun_path); |
| 1978 | check->argv[2] = strdup("NOT_USED"); |
Cyril Bonté | 777be86 | 2014-12-02 21:21:35 +0100 | [diff] [blame] | 1979 | } |
| 1980 | else { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1981 | ha_alert("Starting [%s:%s] check: unsupported address family.\n", px->id, s->id); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1982 | goto err; |
| 1983 | } |
| 1984 | |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 1985 | if (!check->argv[1] || !check->argv[2]) { |
| 1986 | ha_alert("Starting [%s:%s] check: out of memory.\n", px->id, s->id); |
| 1987 | goto err; |
| 1988 | } |
| 1989 | |
| 1990 | check->argv[3] = calloc(EXTCHK_SIZE_ADDR, sizeof(*check->argv[3])); |
| 1991 | check->argv[4] = calloc(EXTCHK_SIZE_UINT, sizeof(*check->argv[4])); |
| 1992 | if (!check->argv[3] || !check->argv[4]) { |
| 1993 | ha_alert("Starting [%s:%s] check: out of memory.\n", px->id, s->id); |
| 1994 | goto err; |
| 1995 | } |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 1996 | |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 1997 | addr_to_str(&s->addr, check->argv[3], EXTCHK_SIZE_ADDR); |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 1998 | if (s->addr.ss_family == AF_INET || s->addr.ss_family == AF_INET6) |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 1999 | snprintf(check->argv[4], EXTCHK_SIZE_UINT, "%u", s->svc_port); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2000 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2001 | for (i = 0; i < 5; i++) { |
| 2002 | if (!check->argv[i]) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2003 | ha_alert("Starting [%s:%s] check: out of memory.\n", px->id, s->id); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2004 | goto err; |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2005 | } |
| 2006 | } |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2007 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2008 | EXTCHK_SETENV(check, EXTCHK_PATH, path, err); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 2009 | /* Add proxy environment variables */ |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2010 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_PROXY_NAME, px->id, err); |
| 2011 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_PROXY_ID, ultoa_r(px->uuid, buf, sizeof(buf)), err); |
| 2012 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_PROXY_ADDR, check->argv[1], err); |
| 2013 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_PROXY_PORT, check->argv[2], err); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 2014 | /* Add server environment variables */ |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2015 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_NAME, s->id, err); |
| 2016 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_ID, ultoa_r(s->puid, buf, sizeof(buf)), err); |
| 2017 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_ADDR, check->argv[3], err); |
| 2018 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_PORT, check->argv[4], err); |
| 2019 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_MAXCONN, ultoa_r(s->maxconn, buf, sizeof(buf)), err); |
| 2020 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_CURCONN, ultoa_r(s->cur_sess, buf, sizeof(buf)), err); |
| 2021 | |
| 2022 | /* Ensure that we don't leave any hole in check->envp */ |
| 2023 | for (i = 0; i < EXTCHK_SIZE; i++) |
| 2024 | if (!check->envp[i]) |
| 2025 | EXTCHK_SETENV(check, i, "", err); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 2026 | |
Cyril Bonté | 99c5bf5 | 2014-08-07 01:55:38 +0200 | [diff] [blame] | 2027 | return 1; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2028 | err: |
| 2029 | if (check->envp) { |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2030 | for (i = 0; i < EXTCHK_SIZE; i++) |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 2031 | free(check->envp[i]); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2032 | free(check->envp); |
| 2033 | check->envp = NULL; |
| 2034 | } |
| 2035 | |
| 2036 | if (check->argv) { |
| 2037 | for (i = 1; i < 5; i++) |
| 2038 | free(check->argv[i]); |
| 2039 | free(check->argv); |
| 2040 | check->argv = NULL; |
| 2041 | } |
Cyril Bonté | 99c5bf5 | 2014-08-07 01:55:38 +0200 | [diff] [blame] | 2042 | return 0; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2043 | } |
| 2044 | |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 2045 | /* |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2046 | * establish a server health-check that makes use of a process. |
| 2047 | * |
| 2048 | * It can return one of : |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2049 | * - SF_ERR_NONE if everything's OK |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2050 | * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...) |
Tim Düsterhus | 4896c44 | 2016-11-29 02:15:19 +0100 | [diff] [blame] | 2051 | * Additionally, in the case of SF_ERR_RESOURCE, an emergency log will be emitted. |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2052 | * |
| 2053 | * Blocks and then unblocks SIGCHLD |
| 2054 | */ |
| 2055 | static int connect_proc_chk(struct task *t) |
| 2056 | { |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2057 | char buf[256]; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2058 | struct check *check = t->context; |
| 2059 | struct server *s = check->server; |
| 2060 | struct proxy *px = s->proxy; |
| 2061 | int status; |
| 2062 | pid_t pid; |
| 2063 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2064 | status = SF_ERR_RESOURCE; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2065 | |
| 2066 | block_sigchld(); |
| 2067 | |
| 2068 | pid = fork(); |
| 2069 | if (pid < 0) { |
Willy Tarreau | d96f112 | 2019-12-03 07:07:36 +0100 | [diff] [blame] | 2070 | ha_alert("Failed to fork process for external health check%s: %s. Aborting.\n", |
| 2071 | (global.tune.options & GTUNE_INSECURE_FORK) ? |
| 2072 | "" : " (likely caused by missing 'insecure-fork-wanted')", |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2073 | strerror(errno)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2074 | set_server_check_status(check, HCHK_STATUS_SOCKERR, strerror(errno)); |
| 2075 | goto out; |
| 2076 | } |
| 2077 | if (pid == 0) { |
| 2078 | /* Child */ |
| 2079 | extern char **environ; |
Willy Tarreau | 9f6dc72 | 2019-03-01 11:15:10 +0100 | [diff] [blame] | 2080 | struct rlimit limit; |
Willy Tarreau | b7b2478 | 2016-06-21 15:32:29 +0200 | [diff] [blame] | 2081 | int fd; |
| 2082 | |
| 2083 | /* close all FDs. Keep stdin/stdout/stderr in verbose mode */ |
| 2084 | fd = (global.mode & (MODE_QUIET|MODE_VERBOSE)) == MODE_QUIET ? 0 : 3; |
| 2085 | |
Willy Tarreau | 2555ccf | 2019-02-21 22:22:06 +0100 | [diff] [blame] | 2086 | my_closefrom(fd); |
Willy Tarreau | b7b2478 | 2016-06-21 15:32:29 +0200 | [diff] [blame] | 2087 | |
Willy Tarreau | 9f6dc72 | 2019-03-01 11:15:10 +0100 | [diff] [blame] | 2088 | /* restore the initial FD limits */ |
| 2089 | limit.rlim_cur = rlim_fd_cur_at_boot; |
| 2090 | limit.rlim_max = rlim_fd_max_at_boot; |
| 2091 | if (setrlimit(RLIMIT_NOFILE, &limit) == -1) { |
| 2092 | getrlimit(RLIMIT_NOFILE, &limit); |
| 2093 | ha_warning("External check: failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n", |
| 2094 | rlim_fd_cur_at_boot, rlim_fd_max_at_boot, |
| 2095 | (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max); |
| 2096 | } |
| 2097 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2098 | environ = check->envp; |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 2099 | |
| 2100 | /* Update some environment variables and command args: curconn, server addr and server port */ |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2101 | extchk_setenv(check, EXTCHK_HAPROXY_SERVER_CURCONN, ultoa_r(s->cur_sess, buf, sizeof(buf))); |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 2102 | |
| 2103 | addr_to_str(&s->addr, check->argv[3], EXTCHK_SIZE_ADDR); |
| 2104 | extchk_setenv(check, EXTCHK_HAPROXY_SERVER_ADDR, check->argv[3]); |
| 2105 | |
| 2106 | *check->argv[4] = 0; |
| 2107 | if (s->addr.ss_family == AF_INET || s->addr.ss_family == AF_INET6) |
| 2108 | snprintf(check->argv[4], EXTCHK_SIZE_UINT, "%u", s->svc_port); |
| 2109 | extchk_setenv(check, EXTCHK_HAPROXY_SERVER_PORT, check->argv[4]); |
| 2110 | |
Willy Tarreau | 2df8cad | 2019-07-01 07:51:29 +0200 | [diff] [blame] | 2111 | haproxy_unblock_signals(); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2112 | execvp(px->check_command, check->argv); |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2113 | ha_alert("Failed to exec process for external health check: %s. Aborting.\n", |
| 2114 | strerror(errno)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2115 | exit(-1); |
| 2116 | } |
| 2117 | |
| 2118 | /* Parent */ |
| 2119 | if (check->result == CHK_RES_UNKNOWN) { |
| 2120 | if (pid_list_add(pid, t) != NULL) { |
| 2121 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
| 2122 | |
| 2123 | if (px->timeout.check && px->timeout.connect) { |
| 2124 | int t_con = tick_add(now_ms, px->timeout.connect); |
| 2125 | t->expire = tick_first(t->expire, t_con); |
| 2126 | } |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2127 | status = SF_ERR_NONE; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2128 | goto out; |
| 2129 | } |
| 2130 | else { |
| 2131 | set_server_check_status(check, HCHK_STATUS_SOCKERR, strerror(errno)); |
| 2132 | } |
| 2133 | kill(pid, SIGTERM); /* process creation error */ |
| 2134 | } |
| 2135 | else |
| 2136 | set_server_check_status(check, HCHK_STATUS_SOCKERR, strerror(errno)); |
| 2137 | |
| 2138 | out: |
| 2139 | unblock_sigchld(); |
| 2140 | return status; |
| 2141 | } |
| 2142 | |
| 2143 | /* |
Willy Tarreau | 1e62e2a | 2017-10-04 15:07:02 +0200 | [diff] [blame] | 2144 | * manages a server health-check that uses an external process. Returns |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2145 | * the time the task accepts to wait, or TIME_ETERNITY for infinity. |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2146 | * |
| 2147 | * Please do NOT place any return statement in this function and only leave |
| 2148 | * via the out_unlock label. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2149 | */ |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2150 | static struct task *process_chk_proc(struct task *t, void *context, unsigned short state) |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2151 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2152 | struct check *check = context; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2153 | struct server *s = check->server; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2154 | int rv; |
| 2155 | int ret; |
| 2156 | int expired = tick_is_expired(t->expire, now_ms); |
| 2157 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 2158 | HA_SPIN_LOCK(SERVER_LOCK, &check->server->lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2159 | if (!(check->state & CHK_ST_INPROGRESS)) { |
| 2160 | /* no check currently running */ |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2161 | if (!expired) /* woke up too early */ |
| 2162 | goto out_unlock; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2163 | |
| 2164 | /* we don't send any health-checks when the proxy is |
| 2165 | * stopped, the server should not be checked or the check |
| 2166 | * is disabled. |
| 2167 | */ |
| 2168 | if (((check->state & (CHK_ST_ENABLED | CHK_ST_PAUSED)) != CHK_ST_ENABLED) || |
| 2169 | s->proxy->state == PR_STSTOPPED) |
| 2170 | goto reschedule; |
| 2171 | |
| 2172 | /* we'll initiate a new check */ |
| 2173 | set_server_check_status(check, HCHK_STATUS_START, NULL); |
| 2174 | |
| 2175 | check->state |= CHK_ST_INPROGRESS; |
| 2176 | |
Simon Horman | dbf7019 | 2015-01-30 11:22:53 +0900 | [diff] [blame] | 2177 | ret = connect_proc_chk(t); |
Willy Tarreau | d7c3fbd | 2017-10-04 15:19:26 +0200 | [diff] [blame] | 2178 | if (ret == SF_ERR_NONE) { |
Willy Tarreau | 1e62e2a | 2017-10-04 15:07:02 +0200 | [diff] [blame] | 2179 | /* the process was forked, we allow up to min(inter, |
| 2180 | * timeout.connect) for it to report its status, but |
| 2181 | * only when timeout.check is set as it may be to short |
| 2182 | * for a full check otherwise. |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2183 | */ |
| 2184 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
| 2185 | |
| 2186 | if (s->proxy->timeout.check && s->proxy->timeout.connect) { |
| 2187 | int t_con = tick_add(now_ms, s->proxy->timeout.connect); |
| 2188 | t->expire = tick_first(t->expire, t_con); |
| 2189 | } |
Christopher Faulet | 88ce5d1 | 2017-10-20 15:41:18 +0200 | [diff] [blame] | 2190 | task_set_affinity(t, tid_bit); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2191 | goto reschedule; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2192 | } |
| 2193 | |
Willy Tarreau | 1e62e2a | 2017-10-04 15:07:02 +0200 | [diff] [blame] | 2194 | /* here, we failed to start the check */ |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2195 | |
| 2196 | check->state &= ~CHK_ST_INPROGRESS; |
| 2197 | check_notify_failure(check); |
| 2198 | |
| 2199 | /* we allow up to min(inter, timeout.connect) for a connection |
| 2200 | * to establish but only when timeout.check is set |
| 2201 | * as it may be to short for a full check otherwise |
| 2202 | */ |
| 2203 | while (tick_is_expired(t->expire, now_ms)) { |
| 2204 | int t_con; |
| 2205 | |
| 2206 | t_con = tick_add(t->expire, s->proxy->timeout.connect); |
| 2207 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
| 2208 | |
| 2209 | if (s->proxy->timeout.check) |
| 2210 | t->expire = tick_first(t->expire, t_con); |
| 2211 | } |
| 2212 | } |
| 2213 | else { |
| 2214 | /* there was a test running. |
| 2215 | * First, let's check whether there was an uncaught error, |
| 2216 | * which can happen on connect timeout or error. |
| 2217 | */ |
| 2218 | if (check->result == CHK_RES_UNKNOWN) { |
| 2219 | /* good connection is enough for pure TCP check */ |
| 2220 | struct pid_list *elem = check->curpid; |
| 2221 | int status = HCHK_STATUS_UNKNOWN; |
| 2222 | |
| 2223 | if (elem->exited) { |
| 2224 | status = elem->status; /* Save in case the process exits between use below */ |
| 2225 | if (!WIFEXITED(status)) |
| 2226 | check->code = -1; |
| 2227 | else |
| 2228 | check->code = WEXITSTATUS(status); |
| 2229 | if (!WIFEXITED(status) || WEXITSTATUS(status)) |
| 2230 | status = HCHK_STATUS_PROCERR; |
| 2231 | else |
| 2232 | status = HCHK_STATUS_PROCOK; |
| 2233 | } else if (expired) { |
| 2234 | status = HCHK_STATUS_PROCTOUT; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2235 | ha_warning("kill %d\n", (int)elem->pid); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2236 | kill(elem->pid, SIGTERM); |
| 2237 | } |
| 2238 | set_server_check_status(check, status, NULL); |
| 2239 | } |
| 2240 | |
| 2241 | if (check->result == CHK_RES_FAILED) { |
| 2242 | /* a failure or timeout detected */ |
| 2243 | check_notify_failure(check); |
| 2244 | } |
| 2245 | else if (check->result == CHK_RES_CONDPASS) { |
| 2246 | /* check is OK but asks for stopping mode */ |
| 2247 | check_notify_stopping(check); |
| 2248 | } |
| 2249 | else if (check->result == CHK_RES_PASSED) { |
| 2250 | /* a success was detected */ |
| 2251 | check_notify_success(check); |
| 2252 | } |
Willy Tarreau | 6dd4ac8 | 2019-09-03 18:55:02 +0200 | [diff] [blame] | 2253 | task_set_affinity(t, 1); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2254 | check->state &= ~CHK_ST_INPROGRESS; |
| 2255 | |
| 2256 | pid_list_del(check->curpid); |
| 2257 | |
| 2258 | rv = 0; |
| 2259 | if (global.spread_checks > 0) { |
| 2260 | rv = srv_getinter(check) * global.spread_checks / 100; |
Willy Tarreau | 5a6d3e7 | 2020-03-08 17:53:53 +0100 | [diff] [blame] | 2261 | rv -= (int) (2 * rv * (ha_random32() / 4294967295.0)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2262 | } |
| 2263 | t->expire = tick_add(now_ms, MS_TO_TICKS(srv_getinter(check) + rv)); |
| 2264 | } |
| 2265 | |
| 2266 | reschedule: |
| 2267 | while (tick_is_expired(t->expire, now_ms)) |
| 2268 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2269 | |
| 2270 | out_unlock: |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 2271 | HA_SPIN_UNLOCK(SERVER_LOCK, &check->server->lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2272 | return t; |
| 2273 | } |
| 2274 | |
| 2275 | /* |
| 2276 | * manages a server health-check that uses a connection. Returns |
| 2277 | * the time the task accepts to wait, or TIME_ETERNITY for infinity. |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2278 | * |
| 2279 | * Please do NOT place any return statement in this function and only leave |
| 2280 | * via the out_unlock label. |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2281 | */ |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2282 | static struct task *process_chk_conn(struct task *t, void *context, unsigned short state) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2283 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2284 | struct check *check = context; |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2285 | struct proxy *proxy = check->proxy; |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2286 | struct conn_stream *cs = check->cs; |
| 2287 | struct connection *conn = cs_conn(cs); |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2288 | int rv; |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 2289 | int ret; |
Willy Tarreau | acbdc7a | 2012-11-23 14:02:10 +0100 | [diff] [blame] | 2290 | int expired = tick_is_expired(t->expire, now_ms); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2291 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2292 | if (check->server) |
| 2293 | HA_SPIN_LOCK(SERVER_LOCK, &check->server->lock); |
Willy Tarreau | 2c115e5 | 2013-12-11 19:41:16 +0100 | [diff] [blame] | 2294 | if (!(check->state & CHK_ST_INPROGRESS)) { |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2295 | /* no check currently running */ |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2296 | if (!expired) /* woke up too early */ |
| 2297 | goto out_unlock; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2298 | |
Simon Horman | 671b6f0 | 2013-11-25 10:46:39 +0900 | [diff] [blame] | 2299 | /* we don't send any health-checks when the proxy is |
| 2300 | * stopped, the server should not be checked or the check |
| 2301 | * is disabled. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2302 | */ |
Willy Tarreau | 0d924cc | 2013-12-11 21:26:24 +0100 | [diff] [blame] | 2303 | if (((check->state & (CHK_ST_ENABLED | CHK_ST_PAUSED)) != CHK_ST_ENABLED) || |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2304 | proxy->state == PR_STSTOPPED) |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2305 | goto reschedule; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2306 | |
| 2307 | /* we'll initiate a new check */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2308 | set_server_check_status(check, HCHK_STATUS_START, NULL); |
Willy Tarreau | 1ae1b7b | 2012-09-28 15:28:30 +0200 | [diff] [blame] | 2309 | |
Willy Tarreau | 2c115e5 | 2013-12-11 19:41:16 +0100 | [diff] [blame] | 2310 | check->state |= CHK_ST_INPROGRESS; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2311 | b_reset(&check->bi); |
| 2312 | b_reset(&check->bo); |
Willy Tarreau | 1ae1b7b | 2012-09-28 15:28:30 +0200 | [diff] [blame] | 2313 | |
Olivier Houchard | aebeff7 | 2019-11-29 16:18:51 +0100 | [diff] [blame] | 2314 | task_set_affinity(t, tid_bit); |
Simon Horman | dbf7019 | 2015-01-30 11:22:53 +0900 | [diff] [blame] | 2315 | ret = connect_conn_chk(t); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2316 | cs = check->cs; |
| 2317 | conn = cs_conn(cs); |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2318 | |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 2319 | switch (ret) { |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2320 | case SF_ERR_UP: |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2321 | goto out_unlock; |
| 2322 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2323 | case SF_ERR_NONE: |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 2324 | /* we allow up to min(inter, timeout.connect) for a connection |
| 2325 | * to establish but only when timeout.check is set |
| 2326 | * as it may be to short for a full check otherwise |
| 2327 | */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2328 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2329 | if (proxy->timeout.check && proxy->timeout.connect) { |
| 2330 | int t_con = tick_add(now_ms, proxy->timeout.connect); |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 2331 | t->expire = tick_first(t->expire, t_con); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2332 | } |
Willy Tarreau | 06559ac | 2013-12-05 01:53:08 +0100 | [diff] [blame] | 2333 | |
Willy Tarreau | cc705a6 | 2019-09-05 17:51:30 +0200 | [diff] [blame] | 2334 | if (check->type) { |
| 2335 | /* send the request if we have one. We avoid receiving |
| 2336 | * if not connected, unless we didn't subscribe for |
| 2337 | * sending since otherwise we won't be woken up. |
| 2338 | */ |
| 2339 | __event_srv_chk_w(cs); |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 2340 | if (!(conn->flags & CO_FL_WAIT_XPRT) || |
Willy Tarreau | c594039 | 2019-09-05 17:38:40 +0200 | [diff] [blame] | 2341 | !(check->wait_list.events & SUB_RETRY_SEND)) |
| 2342 | __event_srv_chk_r(cs); |
Willy Tarreau | cc705a6 | 2019-09-05 17:51:30 +0200 | [diff] [blame] | 2343 | } |
Willy Tarreau | 06559ac | 2013-12-05 01:53:08 +0100 | [diff] [blame] | 2344 | |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2345 | goto reschedule; |
| 2346 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2347 | case SF_ERR_SRVTO: /* ETIMEDOUT */ |
| 2348 | case SF_ERR_SRVCL: /* ECONNREFUSED, ENETUNREACH, ... */ |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2349 | if (conn) |
| 2350 | conn->flags |= CO_FL_ERROR; |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 2351 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2352 | break; |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 2353 | /* should share same code than cases below */ |
| 2354 | case SF_ERR_CHK_PORT: |
| 2355 | check->state |= CHK_ST_PORT_MISS; |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2356 | case SF_ERR_PRXCOND: |
| 2357 | case SF_ERR_RESOURCE: |
| 2358 | case SF_ERR_INTERNAL: |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2359 | if (conn) |
| 2360 | conn->flags |= CO_FL_ERROR; |
| 2361 | chk_report_conn_err(check, conn ? 0 : ENOMEM, 0); |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2362 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2363 | } |
| 2364 | |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2365 | /* here, we have seen a synchronous error, no fd was allocated */ |
Olivier Houchard | aebeff7 | 2019-11-29 16:18:51 +0100 | [diff] [blame] | 2366 | task_set_affinity(t, MAX_THREADS_MASK); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2367 | if (cs) { |
Olivier Houchard | 4906554 | 2019-05-31 19:20:36 +0200 | [diff] [blame] | 2368 | if (check->wait_list.events) |
| 2369 | cs->conn->xprt->unsubscribe(cs->conn, |
| 2370 | cs->conn->xprt_ctx, |
| 2371 | check->wait_list.events, |
| 2372 | &check->wait_list); |
| 2373 | /* We may have been scheduled to run, and the |
| 2374 | * I/O handler expects to have a cs, so remove |
| 2375 | * the tasklet |
| 2376 | */ |
Willy Tarreau | 86eded6 | 2019-06-14 14:47:49 +0200 | [diff] [blame] | 2377 | tasklet_remove_from_tasklet_list(check->wait_list.tasklet); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2378 | cs_destroy(cs); |
| 2379 | cs = check->cs = NULL; |
| 2380 | conn = NULL; |
Olivier Houchard | 390485a | 2017-10-24 19:03:30 +0200 | [diff] [blame] | 2381 | } |
Willy Tarreau | 6b0a850 | 2012-11-23 08:51:32 +0100 | [diff] [blame] | 2382 | |
Willy Tarreau | 2c115e5 | 2013-12-11 19:41:16 +0100 | [diff] [blame] | 2383 | check->state &= ~CHK_ST_INPROGRESS; |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 2384 | check_notify_failure(check); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2385 | |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 2386 | /* we allow up to min(inter, timeout.connect) for a connection |
| 2387 | * to establish but only when timeout.check is set |
| 2388 | * as it may be to short for a full check otherwise |
| 2389 | */ |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 2390 | while (tick_is_expired(t->expire, now_ms)) { |
| 2391 | int t_con; |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 2392 | |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2393 | t_con = tick_add(t->expire, proxy->timeout.connect); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2394 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2395 | if (proxy->timeout.check) |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 2396 | t->expire = tick_first(t->expire, t_con); |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 2397 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2398 | } |
| 2399 | else { |
Willy Tarreau | f150317 | 2012-09-28 19:39:36 +0200 | [diff] [blame] | 2400 | /* there was a test running. |
| 2401 | * First, let's check whether there was an uncaught error, |
| 2402 | * which can happen on connect timeout or error. |
| 2403 | */ |
Simon Horman | ccaabcd | 2014-06-20 12:29:47 +0900 | [diff] [blame] | 2404 | if (check->result == CHK_RES_UNKNOWN) { |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 2405 | /* good connection is enough for pure TCP check */ |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 2406 | if (!(conn->flags & CO_FL_WAIT_XPRT) && !check->type) { |
Christopher Faulet | f61f33a | 2020-03-27 18:55:49 +0100 | [diff] [blame] | 2407 | if (check->use_ssl == 1) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2408 | set_server_check_status(check, HCHK_STATUS_L6OK, NULL); |
Willy Tarreau | f150317 | 2012-09-28 19:39:36 +0200 | [diff] [blame] | 2409 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2410 | set_server_check_status(check, HCHK_STATUS_L4OK, NULL); |
Willy Tarreau | acbdc7a | 2012-11-23 14:02:10 +0100 | [diff] [blame] | 2411 | } |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 2412 | else if ((conn->flags & CO_FL_ERROR) || cs->flags & CS_FL_ERROR || expired) { |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 2413 | chk_report_conn_err(check, 0, expired); |
Willy Tarreau | f150317 | 2012-09-28 19:39:36 +0200 | [diff] [blame] | 2414 | } |
Willy Tarreau | 74fa7fb | 2012-11-23 14:43:49 +0100 | [diff] [blame] | 2415 | else |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2416 | goto out_unlock; /* timeout not reached, wait again */ |
Willy Tarreau | f150317 | 2012-09-28 19:39:36 +0200 | [diff] [blame] | 2417 | } |
| 2418 | |
Willy Tarreau | 74fa7fb | 2012-11-23 14:43:49 +0100 | [diff] [blame] | 2419 | /* check complete or aborted */ |
Gaetan Rivet | 05d692d | 2020-02-14 17:42:54 +0100 | [diff] [blame] | 2420 | |
| 2421 | check->current_step = NULL; |
| 2422 | if (check->sess != NULL) { |
| 2423 | session_free(check->sess); |
| 2424 | check->sess = NULL; |
| 2425 | } |
| 2426 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2427 | if (conn && conn->xprt) { |
Willy Tarreau | 5ba04f6 | 2013-02-12 15:23:12 +0100 | [diff] [blame] | 2428 | /* The check was aborted and the connection was not yet closed. |
| 2429 | * This can happen upon timeout, or when an external event such |
| 2430 | * as a failed response coupled with "observe layer7" caused the |
| 2431 | * server state to be suddenly changed. |
| 2432 | */ |
Willy Tarreau | d85c485 | 2015-03-13 00:40:28 +0100 | [diff] [blame] | 2433 | conn_sock_drain(conn); |
Willy Tarreau | a553ae9 | 2017-10-05 18:52:17 +0200 | [diff] [blame] | 2434 | cs_close(cs); |
Willy Tarreau | 5ba04f6 | 2013-02-12 15:23:12 +0100 | [diff] [blame] | 2435 | } |
| 2436 | |
Willy Tarreau | ac59f36 | 2017-10-08 11:10:19 +0200 | [diff] [blame] | 2437 | if (cs) { |
Olivier Houchard | 4906554 | 2019-05-31 19:20:36 +0200 | [diff] [blame] | 2438 | if (check->wait_list.events) |
| 2439 | cs->conn->xprt->unsubscribe(cs->conn, |
| 2440 | cs->conn->xprt_ctx, |
| 2441 | check->wait_list.events, |
| 2442 | &check->wait_list); |
| 2443 | /* We may have been scheduled to run, and the |
Willy Tarreau | 86eded6 | 2019-06-14 14:47:49 +0200 | [diff] [blame] | 2444 | * I/O handler expects to have a cs, so remove |
| 2445 | * the tasklet |
| 2446 | */ |
| 2447 | tasklet_remove_from_tasklet_list(check->wait_list.tasklet); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2448 | cs_destroy(cs); |
| 2449 | cs = check->cs = NULL; |
| 2450 | conn = NULL; |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2451 | } |
| 2452 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2453 | if (check->server) { |
| 2454 | if (check->result == CHK_RES_FAILED) { |
| 2455 | /* a failure or timeout detected */ |
| 2456 | check_notify_failure(check); |
| 2457 | } |
| 2458 | else if (check->result == CHK_RES_CONDPASS) { |
| 2459 | /* check is OK but asks for stopping mode */ |
| 2460 | check_notify_stopping(check); |
| 2461 | } |
| 2462 | else if (check->result == CHK_RES_PASSED) { |
| 2463 | /* a success was detected */ |
| 2464 | check_notify_success(check); |
| 2465 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2466 | } |
Christopher Faulet | 88ce5d1 | 2017-10-20 15:41:18 +0200 | [diff] [blame] | 2467 | task_set_affinity(t, MAX_THREADS_MASK); |
Willy Tarreau | 2c115e5 | 2013-12-11 19:41:16 +0100 | [diff] [blame] | 2468 | check->state &= ~CHK_ST_INPROGRESS; |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2469 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2470 | if (check->server) { |
| 2471 | rv = 0; |
| 2472 | if (global.spread_checks > 0) { |
| 2473 | rv = srv_getinter(check) * global.spread_checks / 100; |
Willy Tarreau | 5a6d3e7 | 2020-03-08 17:53:53 +0100 | [diff] [blame] | 2474 | rv -= (int) (2 * rv * (ha_random32() / 4294967295.0)); |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2475 | } |
| 2476 | t->expire = tick_add(now_ms, MS_TO_TICKS(srv_getinter(check) + rv)); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2477 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2478 | } |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2479 | |
| 2480 | reschedule: |
| 2481 | while (tick_is_expired(t->expire, now_ms)) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2482 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2483 | out_unlock: |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2484 | if (check->server) |
| 2485 | HA_SPIN_UNLOCK(SERVER_LOCK, &check->server->lock); |
Willy Tarreau | 26c2506 | 2009-03-08 09:38:41 +0100 | [diff] [blame] | 2486 | return t; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2487 | } |
| 2488 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2489 | /* |
| 2490 | * manages a server health-check. Returns |
| 2491 | * the time the task accepts to wait, or TIME_ETERNITY for infinity. |
| 2492 | */ |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2493 | static struct task *process_chk(struct task *t, void *context, unsigned short state) |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2494 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2495 | struct check *check = context; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2496 | |
| 2497 | if (check->type == PR_O2_EXT_CHK) |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2498 | return process_chk_proc(t, context, state); |
| 2499 | return process_chk_conn(t, context, state); |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 2500 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2501 | } |
| 2502 | |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2503 | static int start_check_task(struct check *check, int mininter, |
| 2504 | int nbcheck, int srvpos) |
| 2505 | { |
| 2506 | struct task *t; |
Willy Tarreau | 6dd4ac8 | 2019-09-03 18:55:02 +0200 | [diff] [blame] | 2507 | unsigned long thread_mask = MAX_THREADS_MASK; |
| 2508 | |
| 2509 | if (check->type == PR_O2_EXT_CHK) |
| 2510 | thread_mask = 1; |
| 2511 | |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2512 | /* task for the check */ |
Willy Tarreau | 6dd4ac8 | 2019-09-03 18:55:02 +0200 | [diff] [blame] | 2513 | if ((t = task_new(thread_mask)) == NULL) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2514 | ha_alert("Starting [%s:%s] check: out of memory.\n", |
| 2515 | check->server->proxy->id, check->server->id); |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2516 | return 0; |
| 2517 | } |
| 2518 | |
| 2519 | check->task = t; |
| 2520 | t->process = process_chk; |
| 2521 | t->context = check; |
| 2522 | |
Willy Tarreau | 1746eec | 2014-04-25 10:46:47 +0200 | [diff] [blame] | 2523 | if (mininter < srv_getinter(check)) |
| 2524 | mininter = srv_getinter(check); |
| 2525 | |
| 2526 | if (global.max_spread_checks && mininter > global.max_spread_checks) |
| 2527 | mininter = global.max_spread_checks; |
| 2528 | |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2529 | /* check this every ms */ |
Willy Tarreau | 1746eec | 2014-04-25 10:46:47 +0200 | [diff] [blame] | 2530 | t->expire = tick_add(now_ms, MS_TO_TICKS(mininter * srvpos / nbcheck)); |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2531 | check->start = now; |
| 2532 | task_queue(t); |
| 2533 | |
| 2534 | return 1; |
| 2535 | } |
| 2536 | |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2537 | /* |
| 2538 | * Start health-check. |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2539 | * Returns 0 if OK, ERR_FATAL on error, and prints the error in this case. |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2540 | */ |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2541 | static int start_checks() |
| 2542 | { |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2543 | |
| 2544 | struct proxy *px; |
| 2545 | struct server *s; |
| 2546 | struct task *t; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2547 | int nbcheck=0, mininter=0, srvpos=0; |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2548 | |
Gaetan Rivet | 05d692d | 2020-02-14 17:42:54 +0100 | [diff] [blame] | 2549 | /* 0- init the dummy frontend used to create all checks sessions */ |
| 2550 | init_new_proxy(&checks_fe); |
| 2551 | checks_fe.cap = PR_CAP_FE | PR_CAP_BE; |
| 2552 | checks_fe.mode = PR_MODE_TCP; |
| 2553 | checks_fe.maxconn = 0; |
| 2554 | checks_fe.conn_retries = CONN_RETRIES; |
| 2555 | checks_fe.options2 |= PR_O2_INDEPSTR | PR_O2_SMARTCON | PR_O2_SMARTACC; |
| 2556 | checks_fe.timeout.client = TICK_ETERNITY; |
| 2557 | |
Willy Tarreau | 2c43a1e | 2007-10-14 23:05:39 +0200 | [diff] [blame] | 2558 | /* 1- count the checkers to run simultaneously. |
| 2559 | * We also determine the minimum interval among all of those which |
| 2560 | * have an interval larger than SRV_CHK_INTER_THRES. This interval |
| 2561 | * will be used to spread their start-up date. Those which have |
Jamie Gloudon | 801a0a3 | 2012-08-25 00:18:33 -0400 | [diff] [blame] | 2562 | * a shorter interval will start independently and will not dictate |
Willy Tarreau | 2c43a1e | 2007-10-14 23:05:39 +0200 | [diff] [blame] | 2563 | * too short an interval for all others. |
| 2564 | */ |
Olivier Houchard | fbc74e8 | 2017-11-24 16:54:05 +0100 | [diff] [blame] | 2565 | for (px = proxies_list; px; px = px->next) { |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2566 | for (s = px->srv; s; s = s->next) { |
Willy Tarreau | e7b7348 | 2013-11-21 11:50:50 +0100 | [diff] [blame] | 2567 | if (s->slowstart) { |
Emeric Brun | c60def8 | 2017-09-27 14:59:38 +0200 | [diff] [blame] | 2568 | if ((t = task_new(MAX_THREADS_MASK)) == NULL) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2569 | ha_alert("Starting [%s:%s] check: out of memory.\n", px->id, s->id); |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2570 | return ERR_ALERT | ERR_FATAL; |
Willy Tarreau | e7b7348 | 2013-11-21 11:50:50 +0100 | [diff] [blame] | 2571 | } |
| 2572 | /* We need a warmup task that will be called when the server |
| 2573 | * state switches from down to up. |
| 2574 | */ |
| 2575 | s->warmup = t; |
| 2576 | t->process = server_warmup; |
| 2577 | t->context = s; |
Baptiste Assmann | 6076d1c | 2015-09-17 22:53:59 +0200 | [diff] [blame] | 2578 | /* server can be in this state only because of */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 2579 | if (s->next_state == SRV_ST_STARTING) |
Baptiste Assmann | 6076d1c | 2015-09-17 22:53:59 +0200 | [diff] [blame] | 2580 | task_schedule(s->warmup, tick_add(now_ms, MS_TO_TICKS(MAX(1000, (now.tv_sec - s->last_change)) / 20))); |
Willy Tarreau | e7b7348 | 2013-11-21 11:50:50 +0100 | [diff] [blame] | 2581 | } |
| 2582 | |
Willy Tarreau | d8514a2 | 2013-12-11 21:10:14 +0100 | [diff] [blame] | 2583 | if (s->check.state & CHK_ST_CONFIGURED) { |
| 2584 | nbcheck++; |
| 2585 | if ((srv_getinter(&s->check) >= SRV_CHK_INTER_THRES) && |
| 2586 | (!mininter || mininter > srv_getinter(&s->check))) |
| 2587 | mininter = srv_getinter(&s->check); |
| 2588 | } |
Willy Tarreau | 15f3910 | 2013-12-11 20:41:18 +0100 | [diff] [blame] | 2589 | |
Willy Tarreau | d8514a2 | 2013-12-11 21:10:14 +0100 | [diff] [blame] | 2590 | if (s->agent.state & CHK_ST_CONFIGURED) { |
| 2591 | nbcheck++; |
| 2592 | if ((srv_getinter(&s->agent) >= SRV_CHK_INTER_THRES) && |
| 2593 | (!mininter || mininter > srv_getinter(&s->agent))) |
| 2594 | mininter = srv_getinter(&s->agent); |
| 2595 | } |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2596 | } |
| 2597 | } |
| 2598 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2599 | if (!nbcheck) |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2600 | return 0; |
| 2601 | |
| 2602 | srand((unsigned)time(NULL)); |
| 2603 | |
| 2604 | /* |
| 2605 | * 2- start them as far as possible from each others. For this, we will |
| 2606 | * start them after their interval set to the min interval divided by |
| 2607 | * the number of servers, weighted by the server's position in the list. |
| 2608 | */ |
Olivier Houchard | fbc74e8 | 2017-11-24 16:54:05 +0100 | [diff] [blame] | 2609 | for (px = proxies_list; px; px = px->next) { |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2610 | if ((px->options2 & PR_O2_CHK_ANY) == PR_O2_EXT_CHK) { |
| 2611 | if (init_pid_list()) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2612 | ha_alert("Starting [%s] check: out of memory.\n", px->id); |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2613 | return ERR_ALERT | ERR_FATAL; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2614 | } |
| 2615 | } |
| 2616 | |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2617 | for (s = px->srv; s; s = s->next) { |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2618 | /* A task for the main check */ |
Willy Tarreau | ff5ae35 | 2013-12-11 20:36:34 +0100 | [diff] [blame] | 2619 | if (s->check.state & CHK_ST_CONFIGURED) { |
Cyril Bonté | 99c5bf5 | 2014-08-07 01:55:38 +0200 | [diff] [blame] | 2620 | if (s->check.type == PR_O2_EXT_CHK) { |
| 2621 | if (!prepare_external_check(&s->check)) |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2622 | return ERR_ALERT | ERR_FATAL; |
Cyril Bonté | 99c5bf5 | 2014-08-07 01:55:38 +0200 | [diff] [blame] | 2623 | } |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2624 | if (!start_check_task(&s->check, mininter, nbcheck, srvpos)) |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2625 | return ERR_ALERT | ERR_FATAL; |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2626 | srvpos++; |
| 2627 | } |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2628 | |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2629 | /* A task for a auxiliary agent check */ |
Willy Tarreau | ff5ae35 | 2013-12-11 20:36:34 +0100 | [diff] [blame] | 2630 | if (s->agent.state & CHK_ST_CONFIGURED) { |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2631 | if (!start_check_task(&s->agent, mininter, nbcheck, srvpos)) { |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2632 | return ERR_ALERT | ERR_FATAL; |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2633 | } |
| 2634 | srvpos++; |
| 2635 | } |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2636 | } |
| 2637 | } |
| 2638 | return 0; |
| 2639 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2640 | |
| 2641 | /* |
Willy Tarreau | 5b3a202 | 2012-09-28 15:01:02 +0200 | [diff] [blame] | 2642 | * Perform content verification check on data in s->check.buffer buffer. |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2643 | * The buffer MUST be terminated by a null byte before calling this function. |
| 2644 | * Sets server status appropriately. The caller is responsible for ensuring |
| 2645 | * that the buffer contains at least 13 characters. If <done> is zero, we may |
| 2646 | * return 0 to indicate that data is required to decide of a match. |
| 2647 | */ |
| 2648 | static int httpchk_expect(struct server *s, int done) |
| 2649 | { |
Christopher Faulet | 1bc04c7 | 2017-10-29 20:14:08 +0100 | [diff] [blame] | 2650 | static THREAD_LOCAL char status_msg[] = "HTTP status check returned code <000>"; |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2651 | char status_code[] = "000"; |
| 2652 | char *contentptr; |
| 2653 | int crlf; |
| 2654 | int ret; |
| 2655 | |
| 2656 | switch (s->proxy->options2 & PR_O2_EXP_TYPE) { |
| 2657 | case PR_O2_EXP_STS: |
| 2658 | case PR_O2_EXP_RSTS: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2659 | memcpy(status_code, b_head(&s->check.bi) + 9, 3); |
| 2660 | memcpy(status_msg + strlen(status_msg) - 4, b_head(&s->check.bi) + 9, 3); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2661 | |
| 2662 | if ((s->proxy->options2 & PR_O2_EXP_TYPE) == PR_O2_EXP_STS) |
| 2663 | ret = strncmp(s->proxy->expect_str, status_code, 3) == 0; |
| 2664 | else |
Thierry FOURNIER | 09af0d6 | 2014-06-18 11:35:54 +0200 | [diff] [blame] | 2665 | ret = regex_exec(s->proxy->expect_regex, status_code); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2666 | |
| 2667 | /* we necessarily have the response, so there are no partial failures */ |
| 2668 | if (s->proxy->options2 & PR_O2_EXP_INV) |
| 2669 | ret = !ret; |
| 2670 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2671 | set_server_check_status(&s->check, ret ? HCHK_STATUS_L7OKD : HCHK_STATUS_L7STS, status_msg); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2672 | break; |
| 2673 | |
| 2674 | case PR_O2_EXP_STR: |
| 2675 | case PR_O2_EXP_RSTR: |
| 2676 | /* very simple response parser: ignore CR and only count consecutive LFs, |
| 2677 | * stop with contentptr pointing to first char after the double CRLF or |
| 2678 | * to '\0' if crlf < 2. |
| 2679 | */ |
| 2680 | crlf = 0; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2681 | for (contentptr = b_head(&s->check.bi); *contentptr; contentptr++) { |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2682 | if (crlf >= 2) |
| 2683 | break; |
| 2684 | if (*contentptr == '\r') |
| 2685 | continue; |
| 2686 | else if (*contentptr == '\n') |
| 2687 | crlf++; |
| 2688 | else |
| 2689 | crlf = 0; |
| 2690 | } |
| 2691 | |
| 2692 | /* Check that response contains a body... */ |
| 2693 | if (crlf < 2) { |
| 2694 | if (!done) |
| 2695 | return 0; |
| 2696 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2697 | set_server_check_status(&s->check, HCHK_STATUS_L7RSP, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2698 | "HTTP content check could not find a response body"); |
| 2699 | return 1; |
| 2700 | } |
| 2701 | |
| 2702 | /* Check that response body is not empty... */ |
| 2703 | if (*contentptr == '\0') { |
Willy Tarreau | a164fb5 | 2011-04-13 09:32:41 +0200 | [diff] [blame] | 2704 | if (!done) |
| 2705 | return 0; |
| 2706 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2707 | set_server_check_status(&s->check, HCHK_STATUS_L7RSP, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2708 | "HTTP content check found empty response body"); |
| 2709 | return 1; |
| 2710 | } |
| 2711 | |
| 2712 | /* Check the response content against the supplied string |
| 2713 | * or regex... */ |
| 2714 | if ((s->proxy->options2 & PR_O2_EXP_TYPE) == PR_O2_EXP_STR) |
| 2715 | ret = strstr(contentptr, s->proxy->expect_str) != NULL; |
| 2716 | else |
Thierry FOURNIER | 09af0d6 | 2014-06-18 11:35:54 +0200 | [diff] [blame] | 2717 | ret = regex_exec(s->proxy->expect_regex, contentptr); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2718 | |
| 2719 | /* if we don't match, we may need to wait more */ |
| 2720 | if (!ret && !done) |
| 2721 | return 0; |
| 2722 | |
| 2723 | if (ret) { |
| 2724 | /* content matched */ |
| 2725 | if (s->proxy->options2 & PR_O2_EXP_INV) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2726 | set_server_check_status(&s->check, HCHK_STATUS_L7RSP, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2727 | "HTTP check matched unwanted content"); |
| 2728 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2729 | set_server_check_status(&s->check, HCHK_STATUS_L7OKD, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2730 | "HTTP content check matched"); |
| 2731 | } |
| 2732 | else { |
| 2733 | if (s->proxy->options2 & PR_O2_EXP_INV) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2734 | set_server_check_status(&s->check, HCHK_STATUS_L7OKD, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2735 | "HTTP check did not match unwanted content"); |
| 2736 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2737 | set_server_check_status(&s->check, HCHK_STATUS_L7RSP, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2738 | "HTTP content check did not match"); |
| 2739 | } |
| 2740 | break; |
| 2741 | } |
| 2742 | return 1; |
| 2743 | } |
| 2744 | |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2745 | /* |
| 2746 | * return the id of a step in a send/expect session |
| 2747 | */ |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2748 | static int tcpcheck_get_step_id(struct check *check, struct tcpcheck_rule *rule) |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2749 | { |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2750 | if (!rule) |
| 2751 | rule = check->current_step; |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 2752 | |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2753 | /* no last started step => first step */ |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2754 | if (!rule) |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2755 | return 1; |
| 2756 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 2757 | /* last step is the first implicit connect */ |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2758 | if (rule->index == 0 && |
| 2759 | rule->action == TCPCHK_ACT_CONNECT && |
| 2760 | (rule->connect.options & TCPCHK_OPT_DEFAULT_CONNECT)) |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 2761 | return 0; |
| 2762 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2763 | return rule->index + 1; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2764 | } |
| 2765 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2766 | enum tcpcheck_eval_ret { |
| 2767 | TCPCHK_EVAL_WAIT = 0, |
| 2768 | TCPCHK_EVAL_STOP, |
| 2769 | TCPCHK_EVAL_CONTINUE, |
| 2770 | }; |
| 2771 | |
| 2772 | /* Evaluate a TCPCHK_ACT_CONNECT rule. It returns 1 to evaluate the next rule, 0 |
| 2773 | * to wait and -1 to stop the check. */ |
| 2774 | static enum tcpcheck_eval_ret tcpcheck_eval_connect(struct check *check, struct tcpcheck_rule *rule) |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2775 | { |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2776 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 2777 | struct tcpcheck_connect *connect = &rule->connect; |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2778 | struct proxy *proxy = check->proxy; |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2779 | struct server *s = check->server; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2780 | struct task *t = check->task; |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2781 | struct conn_stream *cs; |
| 2782 | struct connection *conn = NULL; |
| 2783 | struct protocol *proto; |
| 2784 | struct xprt_ops *xprt; |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 2785 | int status, port; |
Willy Tarreau | ef95395 | 2014-10-02 14:30:14 +0200 | [diff] [blame] | 2786 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2787 | /* For a connect action we'll create a new connection. We may also have |
| 2788 | * to kill a previous one. But we don't want to leave *without* a |
| 2789 | * connection if we came here from the connection layer, hence with a |
| 2790 | * connection. Thus we'll proceed in the following order : |
| 2791 | * 1: close but not release previous connection (handled by the caller) |
| 2792 | * 2: try to get a new connection |
| 2793 | * 3: release and replace the old one on success |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2794 | */ |
Willy Tarreau | 449f952 | 2015-05-13 15:39:48 +0200 | [diff] [blame] | 2795 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2796 | /* 2- prepare new connection */ |
| 2797 | cs = cs_new(NULL); |
| 2798 | if (!cs) { |
| 2799 | chunk_printf(&trash, "TCPCHK error allocating connection at step %d", |
| 2800 | tcpcheck_get_step_id(check, rule)); |
Christopher Faulet | 6f2a5e4 | 2020-04-01 13:11:41 +0200 | [diff] [blame] | 2801 | if (rule->comment) |
| 2802 | chunk_appendf(&trash, " comment: '%s'", rule->comment); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2803 | set_server_check_status(check, HCHK_STATUS_SOCKERR, trash.area); |
| 2804 | ret = TCPCHK_EVAL_STOP; |
Christopher Faulet | b610285 | 2017-11-28 10:06:29 +0100 | [diff] [blame] | 2805 | goto out; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2806 | } |
| 2807 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2808 | /* 3- release and replace the old one on success */ |
| 2809 | if (check->cs) { |
| 2810 | if (check->wait_list.events) |
| 2811 | cs->conn->xprt->unsubscribe(cs->conn, cs->conn->xprt_ctx, |
| 2812 | check->wait_list.events, &check->wait_list); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2813 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2814 | /* We may have been scheduled to run, and the I/O handler |
| 2815 | * expects to have a cs, so remove the tasklet |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 2816 | */ |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2817 | tasklet_remove_from_tasklet_list(check->wait_list.tasklet); |
| 2818 | cs_destroy(check->cs); |
| 2819 | } |
Willy Tarreau | deccd11 | 2018-06-14 18:38:55 +0200 | [diff] [blame] | 2820 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2821 | tasklet_set_tid(check->wait_list.tasklet, tid); |
Willy Tarreau | abca5b6 | 2013-12-06 14:19:25 +0100 | [diff] [blame] | 2822 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2823 | check->cs = cs; |
| 2824 | conn = cs->conn; |
Willy Tarreau | abca5b6 | 2013-12-06 14:19:25 +0100 | [diff] [blame] | 2825 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2826 | /* Maybe there were an older connection we were waiting on */ |
| 2827 | check->wait_list.events = 0; |
| 2828 | conn->target = s ? &s->obj_type : &proxy->obj_type; |
Willy Tarreau | f3d3482 | 2014-12-08 12:11:28 +0100 | [diff] [blame] | 2829 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2830 | /* no client address */ |
| 2831 | if (!sockaddr_alloc(&conn->dst)) { |
| 2832 | status = SF_ERR_RESOURCE; |
| 2833 | goto fail_check; |
| 2834 | } |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2835 | |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 2836 | /* connect to the connect rule addr if specified, otherwise the check |
| 2837 | * addr if specified on the server. otherwise, use the server addr |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2838 | */ |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 2839 | *conn->dst = (is_addr(&connect->addr) |
| 2840 | ? connect->addr |
| 2841 | : (is_addr(&check->addr) ? check->addr : s->addr)); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2842 | proto = protocol_by_family(conn->dst->ss_family); |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2843 | |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 2844 | port = 0; |
| 2845 | if (!port && connect->port) |
| 2846 | port = connect->port; |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 2847 | if (!port && connect->port_expr) { |
| 2848 | struct sample *smp; |
| 2849 | |
| 2850 | smp = sample_fetch_as_type(check->proxy, check->sess, NULL, |
| 2851 | SMP_OPT_DIR_REQ | SMP_OPT_FINAL, |
| 2852 | connect->port_expr, SMP_T_SINT); |
| 2853 | if (smp) |
| 2854 | port = smp->data.u.sint; |
| 2855 | } |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 2856 | if (!port && is_inet_addr(&connect->addr)) |
| 2857 | port = get_host_port(&connect->addr); |
| 2858 | if (!port && check->port) |
| 2859 | port = check->port; |
| 2860 | if (!port && is_inet_addr(&check->addr)) |
| 2861 | port = get_host_port(&check->addr); |
| 2862 | if (!port) |
| 2863 | port = s->svc_port; |
| 2864 | set_host_port(conn->dst, port); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2865 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2866 | xprt = ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) |
| 2867 | ? check->xprt |
| 2868 | : ((connect->options & TCPCHK_OPT_SSL) ? xprt_get(XPRT_SSL) : xprt_get(XPRT_RAW))); |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2869 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2870 | conn_prepare(conn, proto, xprt); |
Gaetan Rivet | 05d692d | 2020-02-14 17:42:54 +0100 | [diff] [blame] | 2871 | if (conn_install_mux(conn, &mux_pt_ops, cs, proxy, check->sess) < 0) { |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2872 | status = SF_ERR_RESOURCE; |
| 2873 | goto fail_check; |
| 2874 | } |
| 2875 | cs_attach(cs, check, &check_conn_cb); |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2876 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2877 | status = SF_ERR_INTERNAL; |
| 2878 | if (proto && proto->connect) { |
| 2879 | struct tcpcheck_rule *next; |
| 2880 | int flags = CONNECT_HAS_DATA; |
Olivier Houchard | ff1e9f3 | 2019-09-20 17:18:35 +0200 | [diff] [blame] | 2881 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2882 | next = get_next_tcpcheck_rule(check->tcpcheck_rules, rule); |
| 2883 | if (!next || next->action != TCPCHK_ACT_EXPECT) |
| 2884 | flags |= CONNECT_DELACK_ALWAYS; |
| 2885 | status = proto->connect(conn, flags); |
| 2886 | } |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2887 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2888 | if (connect->options & TCPCHK_OPT_DEFAULT_CONNECT) { |
| 2889 | #ifdef USE_OPENSSL |
| 2890 | if (status == SF_ERR_NONE) { |
| 2891 | if (s->check.sni) |
| 2892 | ssl_sock_set_servername(conn, s->check.sni); |
| 2893 | if (s->check.alpn_str) |
| 2894 | ssl_sock_set_alpn(conn, (unsigned char *)s->check.alpn_str, |
| 2895 | s->check.alpn_len); |
| 2896 | } |
| 2897 | #endif |
| 2898 | if (s->check.via_socks4 && (s->flags & SRV_F_SOCKS4_PROXY)) { |
| 2899 | conn->send_proxy_ofs = 1; |
| 2900 | conn->flags |= CO_FL_SOCKS4; |
| 2901 | } |
| 2902 | if (s->check.send_proxy && !(check->state & CHK_ST_AGENT)) { |
| 2903 | conn->send_proxy_ofs = 1; |
| 2904 | conn->flags |= CO_FL_SEND_PROXY; |
| 2905 | } |
| 2906 | } |
| 2907 | else { |
Christopher Faulet | 79b31d4 | 2020-03-30 13:00:05 +0200 | [diff] [blame] | 2908 | #ifdef USE_OPENSSL |
| 2909 | if (status == SF_ERR_NONE) { |
| 2910 | if (connect->sni) |
| 2911 | ssl_sock_set_servername(conn, connect->sni); |
Christopher Faulet | 9857232 | 2020-03-30 13:16:44 +0200 | [diff] [blame] | 2912 | if (connect->alpn) |
| 2913 | ssl_sock_set_alpn(conn, (unsigned char *)connect->alpn, |
| 2914 | connect->alpn_len); |
Christopher Faulet | 79b31d4 | 2020-03-30 13:00:05 +0200 | [diff] [blame] | 2915 | } |
| 2916 | #endif |
Christopher Faulet | 085426a | 2020-03-30 13:07:02 +0200 | [diff] [blame] | 2917 | if ((connect->options & TCPCHK_OPT_SOCKS4) && (s->flags & SRV_F_SOCKS4_PROXY)) { |
| 2918 | conn->send_proxy_ofs = 1; |
| 2919 | conn->flags |= CO_FL_SOCKS4; |
| 2920 | } |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2921 | if (connect->options & TCPCHK_OPT_SEND_PROXY) { |
| 2922 | conn->send_proxy_ofs = 1; |
| 2923 | conn->flags |= CO_FL_SEND_PROXY; |
| 2924 | } |
| 2925 | if (conn_ctrl_ready(conn) && (connect->options & TCPCHK_OPT_LINGER)) { |
| 2926 | /* Some servers don't like reset on close */ |
| 2927 | fdtab[cs->conn->handle.fd].linger_risk = 0; |
| 2928 | } |
| 2929 | } |
Willy Tarreau | ca79f59 | 2019-07-17 19:04:47 +0200 | [diff] [blame] | 2930 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2931 | if (conn_ctrl_ready(conn) && (conn->flags & (CO_FL_SEND_PROXY | CO_FL_SOCKS4))) { |
| 2932 | if (xprt_add_hs(conn) < 0) |
| 2933 | status = SF_ERR_RESOURCE; |
| 2934 | } |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2935 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2936 | fail_check: |
| 2937 | /* It can return one of : |
| 2938 | * - SF_ERR_NONE if everything's OK |
| 2939 | * - SF_ERR_SRVTO if there are no more servers |
| 2940 | * - SF_ERR_SRVCL if the connection was refused by the server |
| 2941 | * - SF_ERR_PRXCOND if the connection has been limited by the proxy (maxconn) |
| 2942 | * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...) |
| 2943 | * - SF_ERR_INTERNAL for any other purely internal errors |
| 2944 | * Additionally, in the case of SF_ERR_RESOURCE, an emergency log will be emitted. |
| 2945 | * Note that we try to prevent the network stack from sending the ACK during the |
| 2946 | * connect() when a pure TCP check is used (without PROXY protocol). |
| 2947 | */ |
| 2948 | switch (status) { |
| 2949 | case SF_ERR_NONE: |
| 2950 | /* we allow up to min(inter, timeout.connect) for a connection |
| 2951 | * to establish but only when timeout.check is set as it may be |
| 2952 | * to short for a full check otherwise |
| 2953 | */ |
| 2954 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2955 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2956 | if (proxy->timeout.check && proxy->timeout.connect) { |
| 2957 | int t_con = tick_add(now_ms, proxy->timeout.connect); |
| 2958 | t->expire = tick_first(t->expire, t_con); |
| 2959 | } |
| 2960 | break; |
| 2961 | case SF_ERR_SRVTO: /* ETIMEDOUT */ |
| 2962 | case SF_ERR_SRVCL: /* ECONNREFUSED, ENETUNREACH, ... */ |
| 2963 | chunk_printf(&trash, "TCPCHK error establishing connection at step %d: %s", |
| 2964 | tcpcheck_get_step_id(check, rule), strerror(errno)); |
Christopher Faulet | 6f2a5e4 | 2020-04-01 13:11:41 +0200 | [diff] [blame] | 2965 | if (rule->comment) |
| 2966 | chunk_appendf(&trash, " comment: '%s'", rule->comment); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2967 | set_server_check_status(check, HCHK_STATUS_L4CON, trash.area); |
| 2968 | ret = TCPCHK_EVAL_STOP; |
| 2969 | goto out; |
| 2970 | case SF_ERR_PRXCOND: |
| 2971 | case SF_ERR_RESOURCE: |
| 2972 | case SF_ERR_INTERNAL: |
| 2973 | chunk_printf(&trash, "TCPCHK error establishing connection at step %d", |
| 2974 | tcpcheck_get_step_id(check, rule)); |
Christopher Faulet | 6f2a5e4 | 2020-04-01 13:11:41 +0200 | [diff] [blame] | 2975 | if (rule->comment) |
| 2976 | chunk_appendf(&trash, " comment: '%s'", rule->comment); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2977 | set_server_check_status(check, HCHK_STATUS_SOCKERR, trash.area); |
| 2978 | ret = TCPCHK_EVAL_STOP; |
| 2979 | goto out; |
| 2980 | } |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 2981 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2982 | /* don't do anything until the connection is established */ |
| 2983 | if (conn->flags & CO_FL_WAIT_XPRT) { |
| 2984 | ret = TCPCHK_EVAL_WAIT; |
| 2985 | goto out; |
| 2986 | } |
Willy Tarreau | be37315 | 2018-09-06 11:45:30 +0200 | [diff] [blame] | 2987 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2988 | out: |
| 2989 | if (conn && check->result == CHK_RES_FAILED) |
| 2990 | conn->flags |= CO_FL_ERROR; |
| 2991 | return ret; |
| 2992 | } |
Willy Tarreau | 2ab5c38 | 2019-07-17 18:48:07 +0200 | [diff] [blame] | 2993 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 2994 | /* Evaluate a TCPCHK_ACT_SEND rule. It returns 1 to evaluate the next rule, 0 |
| 2995 | * to wait and -1 to stop the check. */ |
| 2996 | static enum tcpcheck_eval_ret tcpcheck_eval_send(struct check *check, struct tcpcheck_rule *rule) |
| 2997 | { |
| 2998 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 2999 | struct tcpcheck_send *send = &rule->send; |
| 3000 | struct conn_stream *cs = check->cs; |
| 3001 | struct connection *conn = cs_conn(cs); |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 3002 | struct buffer *tmp = NULL; |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3003 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3004 | /* reset the read & write buffer */ |
| 3005 | b_reset(&check->bi); |
| 3006 | b_reset(&check->bo); |
Gaetan Rivet | 08fdcb3 | 2020-02-28 11:04:21 +0100 | [diff] [blame] | 3007 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3008 | switch (send->type) { |
| 3009 | case TCPCHK_SEND_STRING: |
| 3010 | case TCPCHK_SEND_BINARY: |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 3011 | if (istlen(send->data) >= b_size(&check->bo)) { |
| 3012 | chunk_printf(&trash, "tcp-check send : string too large (%u) for buffer size (%u) at step %d", |
| 3013 | (unsigned int)istlen(send->data), (unsigned int)b_size(&check->bo), |
| 3014 | tcpcheck_get_step_id(check, rule)); |
| 3015 | set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area); |
| 3016 | ret = TCPCHK_EVAL_STOP; |
| 3017 | goto out; |
| 3018 | } |
| 3019 | b_putist(&check->bo, send->data); |
| 3020 | break; |
| 3021 | case TCPCHK_SEND_STRING_LF: |
| 3022 | check->bo.data = sess_build_logline(check->sess, NULL, b_orig(&check->bo), b_size(&check->bo), &rule->send.fmt); |
| 3023 | if (!b_data(&check->bo)) |
| 3024 | goto out; |
| 3025 | break; |
| 3026 | case TCPCHK_SEND_BINARY_LF: |
| 3027 | tmp = alloc_trash_chunk(); |
| 3028 | if (!tmp) |
| 3029 | goto error_lf; |
| 3030 | tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &rule->send.fmt); |
| 3031 | if (!b_data(tmp)) |
| 3032 | goto out; |
| 3033 | tmp->area[tmp->data] = '\0'; |
| 3034 | b_set_data(&check->bo, b_size(&check->bo)); |
| 3035 | if (parse_binary(b_orig(tmp), &check->bo.area, (int *)&check->bo.data, NULL) == 0) |
| 3036 | goto error_lf; |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3037 | break; |
| 3038 | case TCPCHK_SEND_UNDEF: |
| 3039 | /* Should never happen. */ |
| 3040 | ret = TCPCHK_EVAL_STOP; |
| 3041 | goto out; |
| 3042 | }; |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 3043 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3044 | if (conn->mux->snd_buf(cs, &check->bo, b_data(&check->bo), 0) <= 0) { |
| 3045 | ret = TCPCHK_EVAL_WAIT; |
| 3046 | if ((conn->flags & CO_FL_ERROR) || (cs->flags & CS_FL_ERROR)) |
| 3047 | ret = TCPCHK_EVAL_STOP; |
| 3048 | goto out; |
| 3049 | } |
| 3050 | if (b_data(&check->bo)) { |
| 3051 | cs->conn->mux->subscribe(cs, SUB_RETRY_SEND, &check->wait_list); |
| 3052 | ret = TCPCHK_EVAL_WAIT; |
| 3053 | goto out; |
| 3054 | } |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3055 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3056 | out: |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 3057 | free_trash_chunk(tmp); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3058 | return ret; |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 3059 | |
| 3060 | error_lf: |
| 3061 | chunk_printf(&trash, "tcp-check send : failed to build log-format string at step %d", |
| 3062 | tcpcheck_get_step_id(check, rule)); |
| 3063 | set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area); |
| 3064 | ret = TCPCHK_EVAL_STOP; |
| 3065 | goto out; |
| 3066 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3067 | } |
Gaetan Rivet | f8ba677 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3068 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3069 | /* Evaluate a TCPCHK_ACT_EXPECT rule. It returns 1 to evaluate the next rule, 0 |
Gaetan Rivet | 0c39ecc | 2020-02-24 17:34:11 +0100 | [diff] [blame] | 3070 | * to wait and -1 to stop the check. |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3071 | */ |
| 3072 | static enum tcpcheck_eval_ret tcpcheck_eval_expect(struct check *check, struct tcpcheck_rule *rule, int last_read) |
| 3073 | { |
| 3074 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 3075 | struct tcpcheck_expect *expect = &check->current_step->expect; |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3076 | struct buffer *msg = NULL; |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3077 | int match; |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3078 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3079 | /* The current expect might need more data than the previous one, check again |
| 3080 | * that the minimum amount data required to match is respected. |
| 3081 | */ |
| 3082 | if (!last_read) { |
| 3083 | if ((expect->type == TCPCHK_EXPECT_STRING || expect->type == TCPCHK_EXPECT_BINARY) && |
| 3084 | (b_data(&check->bi) < expect->length)) { |
| 3085 | ret = TCPCHK_EVAL_WAIT; |
| 3086 | goto out; |
| 3087 | } |
| 3088 | if (expect->min_recv > 0 && (b_data(&check->bi) < expect->min_recv)) { |
| 3089 | ret = TCPCHK_EVAL_WAIT; |
| 3090 | goto out; |
| 3091 | } |
| 3092 | } |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3093 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3094 | /* Make GCC happy ; initialize match to a failure state. */ |
| 3095 | match = expect->inverse; |
Willy Tarreau | f2c8735 | 2015-05-13 12:08:21 +0200 | [diff] [blame] | 3096 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3097 | switch (expect->type) { |
| 3098 | case TCPCHK_EXPECT_STRING: |
| 3099 | case TCPCHK_EXPECT_BINARY: |
| 3100 | match = my_memmem(b_head(&check->bi), b_data(&check->bi), expect->string, expect->length) != NULL; |
| 3101 | break; |
| 3102 | case TCPCHK_EXPECT_REGEX: |
| 3103 | if (expect->with_capture) |
| 3104 | match = regex_exec_match2(expect->regex, b_head(&check->bi), MIN(b_data(&check->bi), b_size(&check->bi)-1), |
| 3105 | MAX_MATCH, pmatch, 0); |
| 3106 | else |
| 3107 | match = regex_exec2(expect->regex, b_head(&check->bi), MIN(b_data(&check->bi), b_size(&check->bi)-1)); |
| 3108 | break; |
Willy Tarreau | 7df8ca6 | 2019-07-15 10:57:51 +0200 | [diff] [blame] | 3109 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3110 | case TCPCHK_EXPECT_REGEX_BINARY: |
| 3111 | chunk_reset(&trash); |
| 3112 | dump_binary(&trash, b_head(&check->bi), b_data(&check->bi)); |
| 3113 | if (expect->with_capture) |
| 3114 | match = regex_exec_match2(expect->regex, b_head(&trash), MIN(b_data(&trash), b_size(&trash)-1), |
| 3115 | MAX_MATCH, pmatch, 0); |
| 3116 | else |
| 3117 | match = regex_exec2(expect->regex, b_head(&trash), MIN(b_data(&trash), b_size(&trash)-1)); |
| 3118 | break; |
| 3119 | case TCPCHK_EXPECT_UNDEF: |
| 3120 | /* Should never happen. */ |
| 3121 | ret = TCPCHK_EVAL_STOP; |
| 3122 | goto out; |
| 3123 | } |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3124 | |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3125 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3126 | /* Wait for more data on mismatch only if no minimum is defined (-1), |
| 3127 | * otherwise the absence of match is already conclusive. |
| 3128 | */ |
| 3129 | if (!match && !last_read && (expect->min_recv == -1)) { |
| 3130 | ret = TCPCHK_EVAL_WAIT; |
| 3131 | goto out; |
| 3132 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3133 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3134 | /* Result as expected, next rule. */ |
| 3135 | if (match ^ expect->inverse) |
| 3136 | goto out; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3137 | |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 3138 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3139 | /* From this point on, we matched something we did not want, this is an error state. */ |
| 3140 | ret = TCPCHK_EVAL_STOP; |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3141 | msg = alloc_trash_chunk(); |
| 3142 | if (!msg) |
| 3143 | goto no_desc; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3144 | |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3145 | chunk_strcat(msg, (match ? "TCPCHK matched unwanted content" : "TCPCHK did not match content")); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3146 | switch (expect->type) { |
| 3147 | case TCPCHK_EXPECT_STRING: |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3148 | chunk_appendf(msg, " '%s' at step %d", expect->string, tcpcheck_get_step_id(check, rule)); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3149 | break; |
| 3150 | case TCPCHK_EXPECT_BINARY: |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3151 | chunk_appendf(msg, " (binary) at step %d", tcpcheck_get_step_id(check, rule)); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3152 | break; |
| 3153 | case TCPCHK_EXPECT_REGEX: |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3154 | chunk_appendf(msg, " (regex) at step %d", tcpcheck_get_step_id(check, rule)); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3155 | break; |
| 3156 | case TCPCHK_EXPECT_REGEX_BINARY: |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3157 | chunk_appendf(msg, " (binary regex) at step %d", tcpcheck_get_step_id(check, rule)); |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3158 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3159 | /* If references to the matched text were made, divide the |
| 3160 | * offsets by 2 to match offset of the original response buffer. |
| 3161 | */ |
| 3162 | if (expect->with_capture) { |
| 3163 | int i; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3164 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3165 | for (i = 1; i < MAX_MATCH && pmatch[i].rm_so != -1; i++) { |
| 3166 | pmatch[i].rm_so /= 2; /* at first matched char. */ |
| 3167 | pmatch[i].rm_eo /= 2; /* at last matched char. */ |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3168 | } |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3169 | } |
| 3170 | break; |
| 3171 | case TCPCHK_EXPECT_UNDEF: |
| 3172 | /* Should never happen. */ |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3173 | goto no_desc; |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3174 | } |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3175 | |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3176 | if (!LIST_ISEMPTY(&expect->onerror_fmt)) { |
| 3177 | chunk_strcat(msg, " comment: "); |
| 3178 | msg->data += sess_build_logline(check->sess, NULL, b_tail(msg), b_room(msg), &expect->onerror_fmt); |
| 3179 | } |
| 3180 | else if (rule->comment) { |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3181 | if (expect->with_capture) { |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3182 | ret = exp_replace(b_tail(msg), b_room(msg), b_head(&check->bi), rule->comment, pmatch); |
| 3183 | if (ret != -1) /* ignore comment if too large */ |
| 3184 | msg->data += ret; |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3185 | } |
| 3186 | else |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3187 | chunk_appendf(msg, " comment: '%s'", rule->comment); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3188 | } |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3189 | |
Christopher Faulet | 98cc57c | 2020-04-01 20:52:31 +0200 | [diff] [blame^] | 3190 | if (expect->status_expr) { |
| 3191 | struct sample *smp; |
| 3192 | |
| 3193 | smp = sample_fetch_as_type(check->proxy, check->sess, NULL, |
| 3194 | SMP_OPT_DIR_RES | SMP_OPT_FINAL, |
| 3195 | expect->status_expr, SMP_T_SINT); |
| 3196 | if (smp) |
| 3197 | check->code = smp->data.u.sint; |
| 3198 | } |
| 3199 | |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3200 | no_desc: |
| 3201 | set_server_check_status(check, expect->err_status, (msg ? b_head(msg) : NULL)); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3202 | ret = TCPCHK_EVAL_STOP; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3203 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3204 | out: |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3205 | free_trash_chunk(msg); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3206 | return ret; |
| 3207 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3208 | |
Gaetan Rivet | 0c39ecc | 2020-02-24 17:34:11 +0100 | [diff] [blame] | 3209 | /* Evaluate a TCPCHK_ACT_ACTION_KW rule. It returns 1 to evaluate the next rule, 0 |
| 3210 | * to wait and -1 to stop the check. |
| 3211 | */ |
| 3212 | static enum tcpcheck_eval_ret tcpcheck_eval_action_kw(struct check *check, struct tcpcheck_rule *rule) |
| 3213 | { |
| 3214 | enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE; |
| 3215 | struct act_rule *act_rule; |
| 3216 | enum act_return act_ret; |
| 3217 | |
| 3218 | act_rule =rule->action_kw.rule; |
| 3219 | act_ret = act_rule->action_ptr(act_rule, check->proxy, check->sess, NULL, 0); |
| 3220 | if (act_ret != ACT_RET_CONT) { |
| 3221 | chunk_printf(&trash, "TCPCHK ACTION unexpected result at step %d\n", |
| 3222 | tcpcheck_get_step_id(check, rule)); |
| 3223 | set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area); |
| 3224 | ret = TCPCHK_EVAL_STOP; |
| 3225 | } |
| 3226 | |
| 3227 | return ret; |
| 3228 | } |
| 3229 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3230 | /* proceed with next steps for the TCP checks <check>. Note that this is called |
| 3231 | * both from the connection's wake() callback and from the check scheduling task. |
| 3232 | * It returns 0 on normal cases, or <0 if a close() has happened on an existing |
| 3233 | * connection, presenting the risk of an fd replacement. |
| 3234 | * |
| 3235 | * Please do NOT place any return statement in this function and only leave |
| 3236 | * via the out_end_tcpcheck label after setting retcode. |
| 3237 | */ |
| 3238 | static int tcpcheck_main(struct check *check) |
| 3239 | { |
| 3240 | struct tcpcheck_rule *rule; |
| 3241 | struct conn_stream *cs = check->cs; |
| 3242 | struct connection *conn = cs_conn(cs); |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3243 | struct buffer *msg = NULL; |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3244 | int must_read = 1, last_read = 0; |
| 3245 | int ret, retcode = 0; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3246 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3247 | /* here, we know that the check is complete or that it failed */ |
| 3248 | if (check->result != CHK_RES_UNKNOWN) |
| 3249 | goto out_end_tcpcheck; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3250 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3251 | /* 1- check for connection error, if any */ |
| 3252 | if ((conn && conn->flags & CO_FL_ERROR) || (cs && cs->flags & CS_FL_ERROR)) |
| 3253 | goto out_end_tcpcheck; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3254 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3255 | /* 2- check if we are waiting for the connection establishment. It only |
| 3256 | * happens during TCPCHK_ACT_CONNECT. */ |
| 3257 | if (conn && (conn->flags & CO_FL_WAIT_XPRT)) |
| 3258 | goto out; |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3259 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3260 | /* 3- check for pending outgoing data. It only happens during TCPCHK_ACT_SEND. */ |
| 3261 | if (conn && b_data(&check->bo)) { |
| 3262 | ret = conn->mux->snd_buf(cs, &check->bo, b_data(&check->bo), 0); |
| 3263 | if (ret <= 0) { |
| 3264 | if ((conn && conn->flags & CO_FL_ERROR) || (cs && cs->flags & CS_FL_ERROR)) |
| 3265 | goto out_end_tcpcheck; |
| 3266 | goto out; |
| 3267 | } |
| 3268 | if (b_data(&check->bo)) { |
| 3269 | cs->conn->mux->subscribe(cs, SUB_RETRY_SEND, &check->wait_list); |
| 3270 | goto out; |
| 3271 | } |
| 3272 | } |
Gaetan Rivet | efab6c6 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3273 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3274 | /* Now evaluate the tcp-check rules */ |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3275 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3276 | /* If check->current_step is defined, we are in resume condition. For |
| 3277 | * TCPCHK_ACT_CONNECT and TCPCHK_ACT_SEND rules, we must go to the next |
| 3278 | * rule before resuming the evaluation. For TCPCHK_ACT_EXPECT, we |
| 3279 | * re-evaluate the current rule. Others cannot yield. |
| 3280 | */ |
| 3281 | if (check->current_step) { |
| 3282 | if (check->current_step->action == TCPCHK_ACT_CONNECT || |
| 3283 | check->current_step->action == TCPCHK_ACT_SEND) |
| 3284 | rule = LIST_NEXT(&check->current_step->list, typeof(rule), list); |
| 3285 | else |
| 3286 | rule = check->current_step; |
| 3287 | } |
Gaetan Rivet | 05d692d | 2020-02-14 17:42:54 +0100 | [diff] [blame] | 3288 | else { |
| 3289 | /* First evaluation, create a session */ |
Gaetan Rivet | 13a5043 | 2020-02-21 18:13:44 +0100 | [diff] [blame] | 3290 | check->sess = session_new(&checks_fe, NULL, (check->server ? &check->server->obj_type : NULL)); |
Gaetan Rivet | 05d692d | 2020-02-14 17:42:54 +0100 | [diff] [blame] | 3291 | if (!check->sess) { |
| 3292 | chunk_printf(&trash, "TCPCHK error allocating check session"); |
| 3293 | set_server_check_status(check, HCHK_STATUS_SOCKERR, trash.area); |
| 3294 | goto out_end_tcpcheck; |
| 3295 | } |
Gaetan Rivet | 13a5043 | 2020-02-21 18:13:44 +0100 | [diff] [blame] | 3296 | vars_init(&check->vars, SCOPE_CHECK); |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3297 | rule = LIST_NEXT(check->tcpcheck_rules->list, typeof(rule), list); |
Gaetan Rivet | 05d692d | 2020-02-14 17:42:54 +0100 | [diff] [blame] | 3298 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3299 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3300 | list_for_each_entry_from(rule, check->tcpcheck_rules->list, list) { |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3301 | enum tcpcheck_eval_ret eval_ret; |
Willy Tarreau | f2c8735 | 2015-05-13 12:08:21 +0200 | [diff] [blame] | 3302 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3303 | switch (rule->action) { |
| 3304 | case TCPCHK_ACT_CONNECT: |
| 3305 | check->current_step = rule; |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 3306 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3307 | /* close but not release yet previous connection */ |
| 3308 | if (check->cs) { |
| 3309 | cs_close(check->cs); |
| 3310 | retcode = -1; /* do not reuse the fd in the caller! */ |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3311 | } |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3312 | eval_ret = tcpcheck_eval_connect(check, rule); |
| 3313 | must_read = 1; last_read = 0; |
| 3314 | break; |
| 3315 | case TCPCHK_ACT_SEND: |
| 3316 | check->current_step = rule; |
| 3317 | eval_ret = tcpcheck_eval_send(check, rule); |
| 3318 | must_read = 1; |
| 3319 | break; |
| 3320 | case TCPCHK_ACT_EXPECT: |
| 3321 | check->current_step = rule; |
| 3322 | if (must_read) { |
| 3323 | if (check->proxy->timeout.check) |
| 3324 | check->task->expire = tick_add_ifset(now_ms, check->proxy->timeout.check); |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 3325 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3326 | /* If we already subscribed, then we tried to received and |
| 3327 | * failed, so there's no point trying again. |
| 3328 | */ |
| 3329 | if (check->wait_list.events & SUB_RETRY_RECV) |
| 3330 | goto out; |
| 3331 | if (conn->mux->rcv_buf(cs, &check->bi, b_size(&check->bi), 0) <= 0) { |
| 3332 | if (conn->flags & (CO_FL_ERROR|CO_FL_SOCK_RD_SH) || cs->flags & CS_FL_ERROR) { |
| 3333 | last_read = 1; |
| 3334 | if ((conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) && !b_data(&check->bi)) { |
| 3335 | /* Report network errors only if we got no other data. Otherwise |
| 3336 | * we'll let the upper layers decide whether the response is OK |
| 3337 | * or not. It is very common that an RST sent by the server is |
| 3338 | * reported as an error just after the last data chunk. |
| 3339 | */ |
| 3340 | goto out_end_tcpcheck; |
| 3341 | } |
| 3342 | } |
| 3343 | else { |
| 3344 | conn->mux->subscribe(cs, SUB_RETRY_RECV, &check->wait_list); |
| 3345 | goto out; |
| 3346 | } |
| 3347 | } |
Willy Tarreau | f2c8735 | 2015-05-13 12:08:21 +0200 | [diff] [blame] | 3348 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3349 | /* buffer full, don't wait for more data */ |
| 3350 | if (b_full(&check->bi)) |
| 3351 | last_read = 1; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3352 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3353 | /* Check that response body is not empty... */ |
| 3354 | if (!b_data(&check->bi)) { |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3355 | if (!last_read) |
| 3356 | goto out; |
Gaetan Rivet | 9dcb09f | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3357 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3358 | /* empty response */ |
| 3359 | chunk_printf(&trash, "TCPCHK got an empty response at step %d", |
| 3360 | tcpcheck_get_step_id(check, rule)); |
Christopher Faulet | 6f2a5e4 | 2020-04-01 13:11:41 +0200 | [diff] [blame] | 3361 | if (rule->comment) |
| 3362 | chunk_appendf(&trash, " comment: '%s'", rule->comment); |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 3363 | set_server_check_status(check, rule->expect.err_status, trash.area); |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3364 | ret = -1; |
| 3365 | goto out_end_tcpcheck; |
Gaetan Rivet | 9dcb09f | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3366 | } |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3367 | must_read = 0; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3368 | } |
Gaetan Rivet | 0c39ecc | 2020-02-24 17:34:11 +0100 | [diff] [blame] | 3369 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3370 | eval_ret = tcpcheck_eval_expect(check, rule, last_read); |
| 3371 | if (eval_ret == TCPCHK_EVAL_WAIT) { |
| 3372 | check->current_step = rule->expect.head; |
| 3373 | conn->mux->subscribe(cs, SUB_RETRY_RECV, &check->wait_list); |
Gaetan Rivet | 9dcb09f | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3374 | } |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3375 | break; |
Gaetan Rivet | 0c39ecc | 2020-02-24 17:34:11 +0100 | [diff] [blame] | 3376 | case TCPCHK_ACT_ACTION_KW: |
| 3377 | /* Don't update the current step */ |
| 3378 | eval_ret = tcpcheck_eval_action_kw(check, rule); |
| 3379 | break; |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3380 | default: |
| 3381 | /* Otherwise, just go to the next one and don't update |
| 3382 | * the current step |
| 3383 | */ |
| 3384 | eval_ret = TCPCHK_EVAL_CONTINUE; |
| 3385 | break; |
| 3386 | } |
Baptiste Assmann | 248f117 | 2018-03-01 21:49:01 +0100 | [diff] [blame] | 3387 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3388 | switch (eval_ret) { |
| 3389 | case TCPCHK_EVAL_CONTINUE: |
| 3390 | break; |
| 3391 | case TCPCHK_EVAL_WAIT: |
| 3392 | goto out; |
| 3393 | case TCPCHK_EVAL_STOP: |
| 3394 | goto out_end_tcpcheck; |
Baptiste Assmann | 248f117 | 2018-03-01 21:49:01 +0100 | [diff] [blame] | 3395 | } |
Baptiste Assmann | 248f117 | 2018-03-01 21:49:01 +0100 | [diff] [blame] | 3396 | } |
| 3397 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3398 | /* All rules was evaluated */ |
Christopher Faulet | 98cc57c | 2020-04-01 20:52:31 +0200 | [diff] [blame^] | 3399 | if (check->current_step && check->current_step->action == TCPCHK_ACT_EXPECT) { |
| 3400 | if (!LIST_ISEMPTY(&check->current_step->expect.onsuccess_fmt)) { |
| 3401 | msg = alloc_trash_chunk(); |
| 3402 | if (msg) |
| 3403 | msg->data += sess_build_logline(check->sess, NULL, b_tail(msg), b_room(msg), |
| 3404 | &check->current_step->expect.onsuccess_fmt); |
| 3405 | } |
| 3406 | |
| 3407 | if (check->current_step->expect.status_expr) { |
| 3408 | struct sample *smp; |
| 3409 | |
| 3410 | smp = sample_fetch_as_type(check->proxy, check->sess, NULL, |
| 3411 | SMP_OPT_DIR_RES | SMP_OPT_FINAL, |
| 3412 | check->current_step->expect.status_expr, SMP_T_SINT); |
| 3413 | if (smp) |
| 3414 | check->code = smp->data.u.sint; |
| 3415 | } |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3416 | } |
| 3417 | |
| 3418 | set_server_check_status(check, HCHK_STATUS_L7OKD, (msg ? b_head(msg) : "(tcp-check)")); |
| 3419 | check->current_step = NULL; |
| 3420 | free_trash_chunk(msg); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3421 | |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3422 | out_end_tcpcheck: |
Willy Tarreau | ef91c93 | 2019-07-23 14:37:47 +0200 | [diff] [blame] | 3423 | if ((conn && conn->flags & CO_FL_ERROR) || (cs && cs->flags & CS_FL_ERROR)) |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3424 | chk_report_conn_err(check, errno, 0); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3425 | |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3426 | /* cleanup before leaving */ |
Christopher Faulet | b2c2e0f | 2020-03-30 11:05:10 +0200 | [diff] [blame] | 3427 | check->current_step = NULL; |
Gaetan Rivet | 05d692d | 2020-02-14 17:42:54 +0100 | [diff] [blame] | 3428 | if (check->sess != NULL) { |
Gaetan Rivet | 13a5043 | 2020-02-21 18:13:44 +0100 | [diff] [blame] | 3429 | vars_prune(&check->vars, check->sess, NULL); |
Gaetan Rivet | 05d692d | 2020-02-14 17:42:54 +0100 | [diff] [blame] | 3430 | session_free(check->sess); |
| 3431 | check->sess = NULL; |
| 3432 | } |
| 3433 | out: |
| 3434 | return retcode; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3435 | } |
| 3436 | |
Christopher Faulet | 31c30fd | 2020-03-26 21:10:03 +0100 | [diff] [blame] | 3437 | static const char *init_check(struct check *check, int type) |
Simon Horman | b1900d5 | 2015-01-30 11:22:54 +0900 | [diff] [blame] | 3438 | { |
| 3439 | check->type = type; |
| 3440 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3441 | b_reset(&check->bi); check->bi.size = global.tune.chksize; |
| 3442 | b_reset(&check->bo); check->bo.size = global.tune.chksize; |
Simon Horman | b1900d5 | 2015-01-30 11:22:54 +0900 | [diff] [blame] | 3443 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3444 | check->bi.area = calloc(check->bi.size, sizeof(char)); |
| 3445 | check->bo.area = calloc(check->bo.size, sizeof(char)); |
| 3446 | |
| 3447 | if (!check->bi.area || !check->bo.area) |
Simon Horman | b1900d5 | 2015-01-30 11:22:54 +0900 | [diff] [blame] | 3448 | return "out of memory while allocating check buffer"; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3449 | |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 3450 | check->wait_list.tasklet = tasklet_new(); |
| 3451 | if (!check->wait_list.tasklet) |
Ilya Shipitsin | d425950 | 2020-04-08 01:07:56 +0500 | [diff] [blame] | 3452 | return "out of memory while allocating check tasklet"; |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 3453 | check->wait_list.events = 0; |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 3454 | check->wait_list.tasklet->process = event_srv_chk_io; |
| 3455 | check->wait_list.tasklet->context = check; |
Simon Horman | b1900d5 | 2015-01-30 11:22:54 +0900 | [diff] [blame] | 3456 | return NULL; |
| 3457 | } |
| 3458 | |
Simon Horman | bfb5d33 | 2015-01-30 11:22:55 +0900 | [diff] [blame] | 3459 | void free_check(struct check *check) |
| 3460 | { |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 3461 | task_destroy(check->task); |
| 3462 | if (check->wait_list.tasklet) |
| 3463 | tasklet_free(check->wait_list.tasklet); |
| 3464 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3465 | free(check->bi.area); |
| 3466 | free(check->bo.area); |
Christopher Faulet | 23d86d1 | 2018-01-25 11:36:35 +0100 | [diff] [blame] | 3467 | if (check->cs) { |
| 3468 | free(check->cs->conn); |
| 3469 | check->cs->conn = NULL; |
| 3470 | cs_free(check->cs); |
| 3471 | check->cs = NULL; |
| 3472 | } |
Simon Horman | bfb5d33 | 2015-01-30 11:22:55 +0900 | [diff] [blame] | 3473 | } |
| 3474 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3475 | static void free_tcpcheck(struct tcpcheck_rule *rule, int in_pool) |
| 3476 | { |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 3477 | struct logformat_node *lf, *lfb; |
| 3478 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3479 | if (!rule) |
| 3480 | return; |
| 3481 | |
| 3482 | free(rule->comment); |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3483 | switch (rule->action) { |
| 3484 | case TCPCHK_ACT_SEND: |
| 3485 | switch (rule->send.type) { |
| 3486 | case TCPCHK_SEND_STRING: |
| 3487 | case TCPCHK_SEND_BINARY: |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 3488 | free(rule->send.data.ptr); |
| 3489 | break; |
| 3490 | case TCPCHK_SEND_STRING_LF: |
| 3491 | case TCPCHK_SEND_BINARY_LF: |
| 3492 | list_for_each_entry_safe(lf, lfb, &rule->send.fmt, list) { |
| 3493 | LIST_DEL(&lf->list); |
| 3494 | release_sample_expr(lf->expr); |
| 3495 | free(lf->arg); |
| 3496 | free(lf); |
| 3497 | } |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3498 | break; |
| 3499 | case TCPCHK_SEND_UNDEF: |
| 3500 | break; |
| 3501 | } |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3502 | break; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3503 | case TCPCHK_ACT_EXPECT: |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3504 | list_for_each_entry_safe(lf, lfb, &rule->expect.onerror_fmt, list) { |
| 3505 | LIST_DEL(&lf->list); |
| 3506 | release_sample_expr(lf->expr); |
| 3507 | free(lf->arg); |
| 3508 | free(lf); |
| 3509 | } |
| 3510 | list_for_each_entry_safe(lf, lfb, &rule->expect.onsuccess_fmt, list) { |
| 3511 | LIST_DEL(&lf->list); |
| 3512 | release_sample_expr(lf->expr); |
| 3513 | free(lf->arg); |
| 3514 | free(lf); |
| 3515 | } |
Christopher Faulet | 98cc57c | 2020-04-01 20:52:31 +0200 | [diff] [blame^] | 3516 | release_sample_expr(rule->expect.status_expr); |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3517 | switch (rule->expect.type) { |
| 3518 | case TCPCHK_EXPECT_STRING: |
| 3519 | case TCPCHK_EXPECT_BINARY: |
| 3520 | free(rule->expect.string); |
| 3521 | break; |
| 3522 | case TCPCHK_EXPECT_REGEX: |
| 3523 | case TCPCHK_EXPECT_REGEX_BINARY: |
| 3524 | regex_free(rule->expect.regex); |
| 3525 | break; |
| 3526 | case TCPCHK_EXPECT_UNDEF: |
| 3527 | break; |
| 3528 | } |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3529 | break; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3530 | case TCPCHK_ACT_CONNECT: |
Christopher Faulet | 79b31d4 | 2020-03-30 13:00:05 +0200 | [diff] [blame] | 3531 | free(rule->connect.sni); |
Christopher Faulet | 9857232 | 2020-03-30 13:16:44 +0200 | [diff] [blame] | 3532 | free(rule->connect.alpn); |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 3533 | release_sample_expr(rule->connect.port_expr); |
Christopher Faulet | 79b31d4 | 2020-03-30 13:00:05 +0200 | [diff] [blame] | 3534 | break; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3535 | case TCPCHK_ACT_COMMENT: |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3536 | break; |
Gaetan Rivet | 707b52f | 2020-02-21 18:14:59 +0100 | [diff] [blame] | 3537 | case TCPCHK_ACT_ACTION_KW: |
| 3538 | free(rule->action_kw.rule); |
| 3539 | break; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3540 | } |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3541 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3542 | if (in_pool) |
| 3543 | pool_free(pool_head_tcpcheck_rule, rule); |
| 3544 | else |
| 3545 | free(rule); |
| 3546 | } |
| 3547 | |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3548 | void email_alert_free(struct email_alert *alert) |
| 3549 | { |
| 3550 | struct tcpcheck_rule *rule, *back; |
| 3551 | |
| 3552 | if (!alert) |
| 3553 | return; |
| 3554 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3555 | if (alert->rules.list) { |
| 3556 | list_for_each_entry_safe(rule, back, alert->rules.list, list) { |
| 3557 | LIST_DEL(&rule->list); |
| 3558 | free_tcpcheck(rule, 1); |
| 3559 | } |
| 3560 | free(alert->rules.list); |
| 3561 | alert->rules.list = NULL; |
Christopher Faulet | de1a75b | 2017-10-23 15:38:19 +0200 | [diff] [blame] | 3562 | } |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3563 | pool_free(pool_head_email_alert, alert); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3564 | } |
| 3565 | |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 3566 | static struct task *process_email_alert(struct task *t, void *context, unsigned short state) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3567 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 3568 | struct check *check = context; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3569 | struct email_alertq *q; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3570 | struct email_alert *alert; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3571 | |
| 3572 | q = container_of(check, typeof(*q), check); |
| 3573 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3574 | HA_SPIN_LOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3575 | while (1) { |
| 3576 | if (!(check->state & CHK_ST_ENABLED)) { |
| 3577 | if (LIST_ISEMPTY(&q->email_alerts)) { |
| 3578 | /* All alerts processed, queue the task */ |
| 3579 | t->expire = TICK_ETERNITY; |
| 3580 | task_queue(t); |
Christopher Faulet | c2a89a6 | 2017-10-23 15:54:24 +0200 | [diff] [blame] | 3581 | goto end; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3582 | } |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3583 | |
| 3584 | alert = LIST_NEXT(&q->email_alerts, typeof(alert), list); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3585 | LIST_DEL(&alert->list); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3586 | t->expire = now_ms; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3587 | check->tcpcheck_rules = &alert->rules; |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 3588 | check->status = HCHK_STATUS_INI; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3589 | check->state |= CHK_ST_ENABLED; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3590 | } |
| 3591 | |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 3592 | process_chk(t, context, state); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3593 | if (check->state & CHK_ST_INPROGRESS) |
| 3594 | break; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3595 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3596 | alert = container_of(check->tcpcheck_rules, typeof(*alert), rules); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3597 | email_alert_free(alert); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3598 | check->tcpcheck_rules = NULL; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3599 | check->server = NULL; |
| 3600 | check->state &= ~CHK_ST_ENABLED; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3601 | } |
Christopher Faulet | c2a89a6 | 2017-10-23 15:54:24 +0200 | [diff] [blame] | 3602 | end: |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3603 | HA_SPIN_UNLOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3604 | return t; |
| 3605 | } |
| 3606 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3607 | /* Initializes mailer alerts for the proxy <p> using <mls> parameters. |
| 3608 | * |
| 3609 | * The function returns 1 in success case, otherwise, it returns 0 and err is |
| 3610 | * filled. |
| 3611 | */ |
| 3612 | int init_email_alert(struct mailers *mls, struct proxy *p, char **err) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3613 | { |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3614 | struct mailer *mailer; |
| 3615 | struct email_alertq *queues; |
| 3616 | const char *err_str; |
| 3617 | int i = 0; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3618 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3619 | if ((queues = calloc(mls->count, sizeof(*queues))) == NULL) { |
| 3620 | memprintf(err, "out of memory while allocating mailer alerts queues"); |
mildis | 5ab01cb | 2018-10-02 16:46:34 +0200 | [diff] [blame] | 3621 | goto fail_no_queue; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3622 | } |
| 3623 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3624 | for (mailer = mls->mailer_list; mailer; i++, mailer = mailer->next) { |
| 3625 | struct email_alertq *q = &queues[i]; |
| 3626 | struct check *check = &q->check; |
| 3627 | struct task *t; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3628 | |
| 3629 | LIST_INIT(&q->email_alerts); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3630 | HA_SPIN_INIT(&q->lock); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3631 | check->inter = mls->timeout.mail; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3632 | check->rise = DEF_AGENT_RISETIME; |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 3633 | check->proxy = p; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3634 | check->fall = DEF_AGENT_FALLTIME; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3635 | if ((err_str = init_check(check, PR_O2_TCPCHK_CHK))) { |
| 3636 | memprintf(err, "%s", err_str); |
| 3637 | goto error; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3638 | } |
| 3639 | |
| 3640 | check->xprt = mailer->xprt; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3641 | check->addr = mailer->addr; |
Christopher Faulet | b797ae1 | 2018-03-27 15:35:35 +0200 | [diff] [blame] | 3642 | check->port = get_host_port(&mailer->addr); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3643 | |
Emeric Brun | c60def8 | 2017-09-27 14:59:38 +0200 | [diff] [blame] | 3644 | if ((t = task_new(MAX_THREADS_MASK)) == NULL) { |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3645 | memprintf(err, "out of memory while allocating mailer alerts task"); |
| 3646 | goto error; |
| 3647 | } |
| 3648 | |
| 3649 | check->task = t; |
| 3650 | t->process = process_email_alert; |
| 3651 | t->context = check; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3652 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3653 | /* check this in one ms */ |
| 3654 | t->expire = TICK_ETERNITY; |
| 3655 | check->start = now; |
| 3656 | task_queue(t); |
| 3657 | } |
| 3658 | |
| 3659 | mls->users++; |
| 3660 | free(p->email_alert.mailers.name); |
| 3661 | p->email_alert.mailers.m = mls; |
| 3662 | p->email_alert.queues = queues; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3663 | return 0; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3664 | |
| 3665 | error: |
| 3666 | for (i = 0; i < mls->count; i++) { |
| 3667 | struct email_alertq *q = &queues[i]; |
| 3668 | struct check *check = &q->check; |
| 3669 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3670 | free_check(check); |
| 3671 | } |
| 3672 | free(queues); |
mildis | 5ab01cb | 2018-10-02 16:46:34 +0200 | [diff] [blame] | 3673 | fail_no_queue: |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3674 | return 1; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3675 | } |
| 3676 | |
| 3677 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3678 | static int add_tcpcheck_expect_str(struct tcpcheck_rules *rules, const char *str) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3679 | { |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3680 | struct tcpcheck_rule *tcpcheck, *prev_check; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3681 | struct tcpcheck_expect *expect; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3682 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3683 | if ((tcpcheck = pool_alloc(pool_head_tcpcheck_rule)) == NULL) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3684 | return 0; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3685 | memset(tcpcheck, 0, sizeof(*tcpcheck)); |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3686 | tcpcheck->action = TCPCHK_ACT_EXPECT; |
| 3687 | |
| 3688 | expect = &tcpcheck->expect; |
| 3689 | expect->type = TCPCHK_EXPECT_STRING; |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 3690 | LIST_INIT(&expect->onerror_fmt); |
| 3691 | LIST_INIT(&expect->onsuccess_fmt); |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 3692 | expect->err_status = HCHK_STATUS_L7RSP; |
| 3693 | expect->tout_status = HCHK_STATUS_L7TOUT; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3694 | expect->string = strdup(str); |
| 3695 | if (!expect->string) { |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3696 | pool_free(pool_head_tcpcheck_rule, tcpcheck); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3697 | return 0; |
| 3698 | } |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3699 | expect->length = strlen(expect->string); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3700 | |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3701 | /* All tcp-check expect points back to the first inverse expect rule |
| 3702 | * in a chain of one or more expect rule, potentially itself. |
| 3703 | */ |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3704 | tcpcheck->expect.head = tcpcheck; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3705 | list_for_each_entry_rev(prev_check, rules->list, list) { |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3706 | if (prev_check->action == TCPCHK_ACT_EXPECT) { |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3707 | if (prev_check->expect.inverse) |
| 3708 | tcpcheck->expect.head = prev_check; |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3709 | continue; |
| 3710 | } |
Gaetan Rivet | 0c39ecc | 2020-02-24 17:34:11 +0100 | [diff] [blame] | 3711 | if (prev_check->action != TCPCHK_ACT_COMMENT && prev_check->action != TCPCHK_ACT_ACTION_KW) |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3712 | break; |
| 3713 | } |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3714 | LIST_ADDQ(rules->list, &tcpcheck->list); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3715 | return 1; |
| 3716 | } |
| 3717 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3718 | static int add_tcpcheck_send_strs(struct tcpcheck_rules *rules, const char * const *strs) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3719 | { |
| 3720 | struct tcpcheck_rule *tcpcheck; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3721 | struct tcpcheck_send *send; |
Willy Tarreau | 64345aa | 2016-08-10 19:29:09 +0200 | [diff] [blame] | 3722 | const char *in; |
| 3723 | char *dst; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3724 | int i; |
| 3725 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3726 | if ((tcpcheck = pool_alloc(pool_head_tcpcheck_rule)) == NULL) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3727 | return 0; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3728 | memset(tcpcheck, 0, sizeof(*tcpcheck)); |
| 3729 | tcpcheck->action = TCPCHK_ACT_SEND; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3730 | |
| 3731 | send = &tcpcheck->send; |
| 3732 | send->type = TCPCHK_SEND_STRING; |
| 3733 | |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3734 | for (i = 0; strs[i]; i++) |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 3735 | send->data.len += strlen(strs[i]); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3736 | |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 3737 | send->data.ptr = malloc(send->data.len + 1); |
| 3738 | if (!isttest(send->data)) { |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3739 | pool_free(pool_head_tcpcheck_rule, tcpcheck); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3740 | return 0; |
| 3741 | } |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3742 | |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 3743 | dst = send->data.ptr; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3744 | for (i = 0; strs[i]; i++) |
Willy Tarreau | 64345aa | 2016-08-10 19:29:09 +0200 | [diff] [blame] | 3745 | for (in = strs[i]; (*dst = *in++); dst++); |
| 3746 | *dst = 0; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3747 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3748 | LIST_ADDQ(rules->list, &tcpcheck->list); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3749 | return 1; |
| 3750 | } |
| 3751 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3752 | static int enqueue_one_email_alert(struct proxy *p, struct server *s, |
| 3753 | struct email_alertq *q, const char *msg) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3754 | { |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3755 | struct email_alert *alert; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3756 | struct tcpcheck_rule *tcpcheck; |
| 3757 | struct check *check = &q->check; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3758 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3759 | if ((alert = pool_alloc(pool_head_email_alert)) == NULL) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3760 | goto error; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3761 | LIST_INIT(&alert->list); |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3762 | alert->rules.flags = 0; |
| 3763 | alert->rules.list = calloc(1, sizeof(*alert->rules.list)); |
| 3764 | if (!alert->rules.list) |
| 3765 | goto error; |
| 3766 | LIST_INIT(alert->rules.list); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3767 | alert->srv = s; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3768 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3769 | if ((tcpcheck = pool_alloc(pool_head_tcpcheck_rule)) == NULL) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3770 | goto error; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3771 | memset(tcpcheck, 0, sizeof(*tcpcheck)); |
| 3772 | tcpcheck->action = TCPCHK_ACT_CONNECT; |
| 3773 | tcpcheck->comment = NULL; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3774 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3775 | LIST_ADDQ(alert->rules.list, &tcpcheck->list); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3776 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3777 | if (!add_tcpcheck_expect_str(&alert->rules, "220 ")) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3778 | goto error; |
| 3779 | |
| 3780 | { |
| 3781 | const char * const strs[4] = { "EHLO ", p->email_alert.myhostname, "\r\n" }; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3782 | if (!add_tcpcheck_send_strs(&alert->rules, strs)) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3783 | goto error; |
| 3784 | } |
| 3785 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3786 | if (!add_tcpcheck_expect_str(&alert->rules, "250 ")) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3787 | goto error; |
| 3788 | |
| 3789 | { |
| 3790 | const char * const strs[4] = { "MAIL FROM:<", p->email_alert.from, ">\r\n" }; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3791 | if (!add_tcpcheck_send_strs(&alert->rules, strs)) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3792 | goto error; |
| 3793 | } |
| 3794 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3795 | if (!add_tcpcheck_expect_str(&alert->rules, "250 ")) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3796 | goto error; |
| 3797 | |
| 3798 | { |
| 3799 | const char * const strs[4] = { "RCPT TO:<", p->email_alert.to, ">\r\n" }; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3800 | if (!add_tcpcheck_send_strs(&alert->rules, strs)) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3801 | goto error; |
| 3802 | } |
| 3803 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3804 | if (!add_tcpcheck_expect_str(&alert->rules, "250 ")) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3805 | goto error; |
| 3806 | |
| 3807 | { |
| 3808 | const char * const strs[2] = { "DATA\r\n" }; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3809 | if (!add_tcpcheck_send_strs(&alert->rules, strs)) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3810 | goto error; |
| 3811 | } |
| 3812 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3813 | if (!add_tcpcheck_expect_str(&alert->rules, "354 ")) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3814 | goto error; |
| 3815 | |
| 3816 | { |
| 3817 | struct tm tm; |
| 3818 | char datestr[48]; |
| 3819 | const char * const strs[18] = { |
Pieter Baauw | 5e0964e | 2016-02-13 16:27:35 +0100 | [diff] [blame] | 3820 | "From: ", p->email_alert.from, "\r\n", |
| 3821 | "To: ", p->email_alert.to, "\r\n", |
| 3822 | "Date: ", datestr, "\r\n", |
| 3823 | "Subject: [HAproxy Alert] ", msg, "\r\n", |
| 3824 | "\r\n", |
| 3825 | msg, "\r\n", |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3826 | "\r\n", |
Pieter Baauw | ed35c37 | 2015-07-22 19:51:54 +0200 | [diff] [blame] | 3827 | ".\r\n", |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3828 | NULL |
| 3829 | }; |
| 3830 | |
| 3831 | get_localtime(date.tv_sec, &tm); |
| 3832 | |
| 3833 | if (strftime(datestr, sizeof(datestr), "%a, %d %b %Y %T %z (%Z)", &tm) == 0) { |
| 3834 | goto error; |
| 3835 | } |
| 3836 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3837 | if (!add_tcpcheck_send_strs(&alert->rules, strs)) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3838 | goto error; |
| 3839 | } |
| 3840 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3841 | if (!add_tcpcheck_expect_str(&alert->rules, "250 ")) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3842 | goto error; |
| 3843 | |
| 3844 | { |
| 3845 | const char * const strs[2] = { "QUIT\r\n" }; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3846 | if (!add_tcpcheck_send_strs(&alert->rules, strs)) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3847 | goto error; |
| 3848 | } |
| 3849 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3850 | if (!add_tcpcheck_expect_str(&alert->rules, "221 ")) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3851 | goto error; |
| 3852 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3853 | HA_SPIN_LOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3854 | task_wakeup(check->task, TASK_WOKEN_MSG); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3855 | LIST_ADDQ(&q->email_alerts, &alert->list); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3856 | HA_SPIN_UNLOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3857 | return 1; |
| 3858 | |
| 3859 | error: |
| 3860 | email_alert_free(alert); |
| 3861 | return 0; |
| 3862 | } |
| 3863 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3864 | static void enqueue_email_alert(struct proxy *p, struct server *s, const char *msg) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3865 | { |
| 3866 | int i; |
| 3867 | struct mailer *mailer; |
| 3868 | |
| 3869 | for (i = 0, mailer = p->email_alert.mailers.m->mailer_list; |
| 3870 | i < p->email_alert.mailers.m->count; i++, mailer = mailer->next) { |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3871 | if (!enqueue_one_email_alert(p, s, &p->email_alert.queues[i], msg)) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 3872 | ha_alert("Email alert [%s] could not be enqueued: out of memory\n", p->id); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3873 | return; |
| 3874 | } |
| 3875 | } |
| 3876 | |
| 3877 | return; |
| 3878 | } |
| 3879 | |
| 3880 | /* |
| 3881 | * Send email alert if configured. |
| 3882 | */ |
Simon Horman | 64e3416 | 2015-02-06 11:11:57 +0900 | [diff] [blame] | 3883 | void send_email_alert(struct server *s, int level, const char *format, ...) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3884 | { |
| 3885 | va_list argp; |
| 3886 | char buf[1024]; |
| 3887 | int len; |
| 3888 | struct proxy *p = s->proxy; |
| 3889 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3890 | if (!p->email_alert.mailers.m || level > p->email_alert.level || format == NULL) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3891 | return; |
| 3892 | |
| 3893 | va_start(argp, format); |
| 3894 | len = vsnprintf(buf, sizeof(buf), format, argp); |
| 3895 | va_end(argp); |
| 3896 | |
Thierry FOURNIER | 62c8a21 | 2017-02-09 12:19:27 +0100 | [diff] [blame] | 3897 | if (len < 0 || len >= sizeof(buf)) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 3898 | ha_alert("Email alert [%s] could not format message\n", p->id); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3899 | return; |
| 3900 | } |
| 3901 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3902 | enqueue_email_alert(p, s, buf); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3903 | } |
| 3904 | |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 3905 | /* |
| 3906 | * Return value: |
| 3907 | * the port to be used for the health check |
| 3908 | * 0 in case no port could be found for the check |
| 3909 | */ |
Christopher Faulet | 31c30fd | 2020-03-26 21:10:03 +0100 | [diff] [blame] | 3910 | static int srv_check_healthcheck_port(struct check *chk) |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 3911 | { |
| 3912 | int i = 0; |
| 3913 | struct server *srv = NULL; |
| 3914 | |
| 3915 | srv = chk->server; |
| 3916 | |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 3917 | /* by default, we use the health check port ocnfigured */ |
| 3918 | if (chk->port > 0) |
| 3919 | return chk->port; |
| 3920 | |
| 3921 | /* try to get the port from check_core.addr if check.port not set */ |
| 3922 | i = get_host_port(&chk->addr); |
| 3923 | if (i > 0) |
| 3924 | return i; |
| 3925 | |
| 3926 | /* try to get the port from server address */ |
| 3927 | /* prevent MAPPORTS from working at this point, since checks could |
| 3928 | * not be performed in such case (MAPPORTS impose a relative ports |
| 3929 | * based on live traffic) |
| 3930 | */ |
| 3931 | if (srv->flags & SRV_F_MAPPORTS) |
| 3932 | return 0; |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 3933 | |
| 3934 | i = srv->svc_port; /* by default */ |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 3935 | if (i > 0) |
| 3936 | return i; |
| 3937 | |
| 3938 | return 0; |
| 3939 | } |
| 3940 | |
Willy Tarreau | 172f5ce | 2018-11-26 11:21:50 +0100 | [diff] [blame] | 3941 | REGISTER_POST_CHECK(start_checks); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3942 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 3943 | static int check_proxy_tcpcheck(struct proxy *px) |
| 3944 | { |
Christopher Faulet | 6f2a5e4 | 2020-04-01 13:11:41 +0200 | [diff] [blame] | 3945 | struct tcpcheck_rule *chk, *back; |
| 3946 | char *comment = NULL; |
| 3947 | enum tcpcheck_rule_type prev_action = TCPCHK_ACT_COMMENT; |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 3948 | int ret = 0; |
| 3949 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3950 | if ((px->options2 & PR_O2_CHK_ANY) != PR_O2_TCPCHK_CHK) |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 3951 | goto out; |
| 3952 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3953 | if (!px->tcpcheck_rules.list) { |
| 3954 | px->tcpcheck_rules.list = calloc(1, sizeof(*px->tcpcheck_rules.list)); |
| 3955 | if (!px->tcpcheck_rules.list) { |
| 3956 | ha_alert("config : proxy '%s': out of memory.\n", px->id); |
| 3957 | ret |= ERR_ALERT | ERR_FATAL; |
| 3958 | goto out; |
| 3959 | } |
| 3960 | LIST_INIT(px->tcpcheck_rules.list); |
| 3961 | } |
| 3962 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 3963 | /* If there is no connect rule preceeding all send / expect rules, an |
| 3964 | * implicit one is inserted before all others |
| 3965 | */ |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3966 | chk = get_first_tcpcheck_rule(&px->tcpcheck_rules); |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 3967 | if (!chk || chk->action != TCPCHK_ACT_CONNECT) { |
| 3968 | chk = calloc(1, sizeof(*chk)); |
| 3969 | if (!chk) { |
| 3970 | ha_alert("config : proxy '%s': unable to add implicit tcp-check connect rule " |
| 3971 | "(out of memory).\n", px->id); |
| 3972 | ret |= ERR_ALERT | ERR_FATAL; |
| 3973 | goto out; |
| 3974 | } |
| 3975 | chk->action = TCPCHK_ACT_CONNECT; |
| 3976 | chk->connect.options = TCPCHK_OPT_DEFAULT_CONNECT; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 3977 | LIST_ADD(px->tcpcheck_rules.list, &chk->list); |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 3978 | } |
Christopher Faulet | 6f2a5e4 | 2020-04-01 13:11:41 +0200 | [diff] [blame] | 3979 | |
| 3980 | /* Now remove comment rules */ |
| 3981 | list_for_each_entry_safe(chk, back, px->tcpcheck_rules.list, list) { |
| 3982 | if (chk->action != prev_action && prev_action != TCPCHK_ACT_COMMENT) { |
| 3983 | free(comment); |
| 3984 | comment = NULL; |
| 3985 | } |
| 3986 | |
| 3987 | prev_action = chk->action; |
| 3988 | switch (chk->action) { |
| 3989 | case TCPCHK_ACT_COMMENT: |
| 3990 | free(comment); |
| 3991 | comment = chk->comment; |
| 3992 | LIST_DEL(&chk->list); |
| 3993 | free(chk); |
| 3994 | break; |
| 3995 | case TCPCHK_ACT_CONNECT: |
| 3996 | if (!chk->comment && comment) |
| 3997 | chk->comment = strdup(comment); |
| 3998 | /* fall though */ |
| 3999 | case TCPCHK_ACT_ACTION_KW: |
| 4000 | free(comment); |
| 4001 | comment = NULL; |
| 4002 | break; |
| 4003 | case TCPCHK_ACT_SEND: |
| 4004 | case TCPCHK_ACT_EXPECT: |
| 4005 | if (!chk->comment && comment) |
| 4006 | chk->comment = strdup(comment); |
| 4007 | break; |
| 4008 | } |
| 4009 | } |
| 4010 | free(comment); |
| 4011 | comment = NULL; |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 4012 | |
| 4013 | out: |
| 4014 | return ret; |
| 4015 | } |
| 4016 | |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 4017 | static int init_srv_check(struct server *srv) |
| 4018 | { |
| 4019 | const char *err; |
| 4020 | struct tcpcheck_rule *r; |
| 4021 | int ret = 0; |
| 4022 | |
| 4023 | if (!srv->do_check) |
| 4024 | goto out; |
| 4025 | |
| 4026 | |
| 4027 | /* If neither a port nor an addr was specified and no check transport |
| 4028 | * layer is forced, then the transport layer used by the checks is the |
| 4029 | * same as for the production traffic. Otherwise we use raw_sock by |
| 4030 | * default, unless one is specified. |
| 4031 | */ |
| 4032 | if (!srv->check.port && !is_addr(&srv->check.addr)) { |
| 4033 | if (!srv->check.use_ssl && srv->use_ssl != -1) { |
| 4034 | srv->check.use_ssl = srv->use_ssl; |
| 4035 | srv->check.xprt = srv->xprt; |
| 4036 | } |
| 4037 | else if (srv->check.use_ssl == 1) |
| 4038 | srv->check.xprt = xprt_get(XPRT_SSL); |
| 4039 | |
| 4040 | srv->check.send_proxy |= (srv->pp_opts); |
| 4041 | } |
| 4042 | |
| 4043 | /* validate <srv> server health-check settings */ |
| 4044 | |
| 4045 | /* We need at least a service port, a check port or the first tcp-check |
| 4046 | * rule must be a 'connect' one when checking an IPv4/IPv6 server. |
| 4047 | */ |
| 4048 | if ((srv_check_healthcheck_port(&srv->check) != 0) || |
| 4049 | (!is_inet_addr(&srv->check.addr) && (is_addr(&srv->check.addr) || !is_inet_addr(&srv->addr)))) |
| 4050 | goto init; |
| 4051 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4052 | if (!srv->proxy->tcpcheck_rules.list || LIST_ISEMPTY(srv->proxy->tcpcheck_rules.list)) { |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 4053 | ha_alert("config: %s '%s': server '%s' has neither service port nor check port.\n", |
| 4054 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id); |
| 4055 | ret |= ERR_ALERT | ERR_ABORT; |
| 4056 | goto out; |
| 4057 | } |
| 4058 | |
| 4059 | /* search the first action (connect / send / expect) in the list */ |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4060 | r = get_first_tcpcheck_rule(&srv->proxy->tcpcheck_rules); |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 4061 | if (!r || (r->action != TCPCHK_ACT_CONNECT) || (!r->connect.port && !get_host_port(&r->connect.addr))) { |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 4062 | ha_alert("config: %s '%s': server '%s' has neither service port nor check port " |
| 4063 | "nor tcp_check rule 'connect' with port information.\n", |
| 4064 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id); |
| 4065 | ret |= ERR_ALERT | ERR_ABORT; |
| 4066 | goto out; |
| 4067 | } |
| 4068 | |
| 4069 | /* scan the tcp-check ruleset to ensure a port has been configured */ |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4070 | list_for_each_entry(r, srv->proxy->tcpcheck_rules.list, list) { |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 4071 | if ((r->action == TCPCHK_ACT_CONNECT) && (!r->connect.port || !get_host_port(&r->connect.addr))) { |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 4072 | ha_alert("config: %s '%s': server '%s' has neither service port nor check port, " |
| 4073 | "and a tcp_check rule 'connect' with no port information.\n", |
| 4074 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id); |
| 4075 | ret |= ERR_ALERT | ERR_ABORT; |
| 4076 | goto out; |
| 4077 | } |
| 4078 | } |
| 4079 | |
| 4080 | init: |
| 4081 | err = init_check(&srv->check, srv->proxy->options2 & PR_O2_CHK_ANY); |
| 4082 | if (err) { |
| 4083 | ha_alert("config: %s '%s': unable to init check for server '%s' (%s).\n", |
| 4084 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id, err); |
| 4085 | ret |= ERR_ALERT | ERR_ABORT; |
| 4086 | goto out; |
| 4087 | } |
| 4088 | srv->check.state |= CHK_ST_CONFIGURED | CHK_ST_ENABLED; |
| 4089 | global.maxsock++; |
| 4090 | |
| 4091 | out: |
| 4092 | return ret; |
| 4093 | } |
| 4094 | |
| 4095 | static int init_srv_agent_check(struct server *srv) |
| 4096 | { |
| 4097 | const char *err; |
| 4098 | int ret = 0; |
| 4099 | |
| 4100 | if (!srv->do_agent) |
| 4101 | goto out; |
| 4102 | |
| 4103 | err = init_check(&srv->agent, PR_O2_LB_AGENT_CHK); |
| 4104 | if (err) { |
| 4105 | ha_alert("config: %s '%s': unable to init agent-check for server '%s' (%s).\n", |
| 4106 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id, err); |
| 4107 | ret |= ERR_ALERT | ERR_ABORT; |
| 4108 | goto out; |
| 4109 | } |
| 4110 | |
| 4111 | if (!srv->agent.inter) |
| 4112 | srv->agent.inter = srv->check.inter; |
| 4113 | |
| 4114 | srv->agent.state |= CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_AGENT; |
| 4115 | global.maxsock++; |
| 4116 | |
| 4117 | out: |
| 4118 | return ret; |
| 4119 | } |
| 4120 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4121 | void deinit_proxy_tcpcheck(struct proxy *px) |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4122 | { |
| 4123 | struct tcpcheck_rule *chk, *back; |
| 4124 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4125 | if (!px->tcpcheck_rules.list || (px->tcpcheck_rules.flags & TCPCHK_RULES_SHARED)) |
| 4126 | goto end; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4127 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4128 | list_for_each_entry_safe(chk, back, px->tcpcheck_rules.list, list) { |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4129 | LIST_DEL(&chk->list); |
| 4130 | free_tcpcheck(chk, 0); |
| 4131 | } |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4132 | free(px->tcpcheck_rules.list); |
| 4133 | |
| 4134 | end: |
| 4135 | px->tcpcheck_rules.flags = 0; |
| 4136 | px->tcpcheck_rules.list = NULL; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4137 | } |
| 4138 | |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 4139 | static void deinit_srv_check(struct server *srv) |
| 4140 | { |
| 4141 | if (srv->do_check) |
| 4142 | free_check(&srv->check); |
| 4143 | } |
| 4144 | |
| 4145 | |
| 4146 | static void deinit_srv_agent_check(struct server *srv) |
| 4147 | { |
| 4148 | if (srv->do_agent) |
| 4149 | free_check(&srv->agent); |
| 4150 | free(srv->agent.send_string); |
| 4151 | } |
| 4152 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4153 | static void deinit_tcpchecks() |
| 4154 | { |
| 4155 | struct tcpcheck_ruleset *rs, *rsb; |
| 4156 | struct tcpcheck_rule *r, *rb; |
| 4157 | |
| 4158 | list_for_each_entry_safe(rs, rsb, &tcpchecks_list, list) { |
| 4159 | LIST_DEL(&rs->list); |
| 4160 | list_for_each_entry_safe(r, rb, &rs->rules, list) { |
| 4161 | LIST_DEL(&r->list); |
| 4162 | free_tcpcheck(r, 0); |
| 4163 | } |
| 4164 | free(rs->name); |
| 4165 | free(rs); |
| 4166 | } |
| 4167 | } |
| 4168 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame] | 4169 | |
| 4170 | REGISTER_POST_PROXY_CHECK(check_proxy_tcpcheck); |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 4171 | REGISTER_POST_SERVER_CHECK(init_srv_check); |
| 4172 | REGISTER_POST_SERVER_CHECK(init_srv_agent_check); |
| 4173 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4174 | REGISTER_PROXY_DEINIT(deinit_proxy_tcpcheck); |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 4175 | REGISTER_SERVER_DEINIT(deinit_srv_check); |
| 4176 | REGISTER_SERVER_DEINIT(deinit_srv_agent_check); |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4177 | REGISTER_POST_DEINIT(deinit_tcpchecks); |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 4178 | |
Christopher Faulet | ba3c68f | 2020-04-01 16:27:05 +0200 | [diff] [blame] | 4179 | /* extracts check payload at a fixed position and length */ |
| 4180 | static int |
| 4181 | smp_fetch_chk_payload(const struct arg *arg_p, struct sample *smp, const char *kw, void *private) |
| 4182 | { |
| 4183 | unsigned int buf_offset = ((arg_p[0].type == ARGT_SINT) ? arg_p[0].data.sint : 0); |
| 4184 | unsigned int buf_size = ((arg_p[1].type == ARGT_SINT) ? arg_p[1].data.sint : 0); |
| 4185 | struct server *srv = (smp->sess ? objt_server(smp->sess->origin) : NULL); |
| 4186 | struct buffer *buf; |
| 4187 | |
| 4188 | if (!srv || !srv->do_check) |
| 4189 | return 0; |
| 4190 | |
| 4191 | buf = &srv->check.bi; |
| 4192 | if (buf_offset > b_data(buf)) |
| 4193 | goto no_match; |
| 4194 | if (buf_offset + buf_size > b_data(buf)) |
| 4195 | buf_size = 0; |
| 4196 | |
| 4197 | /* init chunk as read only */ |
| 4198 | smp->data.type = SMP_T_STR; |
| 4199 | smp->flags = SMP_F_VOLATILE | SMP_F_CONST; |
| 4200 | chunk_initlen(&smp->data.u.str, b_head(buf) + buf_offset, 0, (buf_size ? buf_size : (b_data(buf) - buf_offset))); |
| 4201 | |
| 4202 | return 1; |
| 4203 | |
| 4204 | no_match: |
| 4205 | smp->flags = 0; |
| 4206 | return 0; |
| 4207 | } |
| 4208 | |
| 4209 | static struct sample_fetch_kw_list smp_kws = {ILH, { |
| 4210 | { "check.payload", smp_fetch_chk_payload, ARG2(0,SINT,SINT), NULL, SMP_T_STR, SMP_USE_INTRN }, |
| 4211 | { /* END */ }, |
| 4212 | }}; |
| 4213 | |
| 4214 | INITCALL1(STG_REGISTER, sample_register_fetches, &smp_kws); |
| 4215 | |
| 4216 | |
Gaetan Rivet | 707b52f | 2020-02-21 18:14:59 +0100 | [diff] [blame] | 4217 | struct action_kw_list tcp_check_keywords = { |
| 4218 | .list = LIST_HEAD_INIT(tcp_check_keywords.list), |
| 4219 | }; |
| 4220 | |
| 4221 | /* Return the struct action_kw associated to a keyword */ |
| 4222 | static struct action_kw *action_kw_tcp_check_lookup(const char *kw) |
| 4223 | { |
| 4224 | return action_lookup(&tcp_check_keywords.list, kw); |
| 4225 | } |
| 4226 | |
| 4227 | static void action_kw_tcp_check_build_list(struct buffer *chk) |
| 4228 | { |
| 4229 | action_build_list(&tcp_check_keywords.list, chk); |
| 4230 | } |
| 4231 | |
| 4232 | /* Create a tcp-check rule resulting from parsing a custom keyword. */ |
| 4233 | static struct tcpcheck_rule *parse_tcpcheck_action(char **args, int cur_arg, struct proxy *px, |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4234 | struct list *rules, struct action_kw *kw, |
| 4235 | const char *file, int line, char **errmsg) |
Gaetan Rivet | 707b52f | 2020-02-21 18:14:59 +0100 | [diff] [blame] | 4236 | { |
| 4237 | struct tcpcheck_rule *chk = NULL; |
| 4238 | struct act_rule *actrule = NULL; |
| 4239 | |
| 4240 | actrule = calloc(1, sizeof(*actrule)); |
| 4241 | if (!actrule) { |
| 4242 | memprintf(errmsg, "out of memory"); |
| 4243 | goto error; |
| 4244 | } |
| 4245 | actrule->kw = kw; |
| 4246 | actrule->from = ACT_F_TCP_CHK; |
| 4247 | |
| 4248 | cur_arg++; |
| 4249 | if (kw->parse((const char **)args, &cur_arg, px, actrule, errmsg) == ACT_RET_PRS_ERR) { |
| 4250 | memprintf(errmsg, "'%s' : %s", kw->kw, *errmsg); |
| 4251 | goto error; |
| 4252 | } |
| 4253 | |
| 4254 | chk = calloc(1, sizeof(*chk)); |
| 4255 | if (!chk) { |
| 4256 | memprintf(errmsg, "out of memory"); |
| 4257 | goto error; |
| 4258 | } |
| 4259 | chk->action = TCPCHK_ACT_ACTION_KW; |
| 4260 | chk->action_kw.rule = actrule; |
| 4261 | return chk; |
| 4262 | |
| 4263 | error: |
| 4264 | free(actrule); |
| 4265 | return NULL; |
| 4266 | } |
| 4267 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4268 | static struct tcpcheck_rule *parse_tcpcheck_connect(char **args, int cur_arg, struct proxy *px, struct list *rules, |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 4269 | const char *file, int line, char **errmsg) |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4270 | { |
| 4271 | struct tcpcheck_rule *chk = NULL; |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 4272 | struct sockaddr_storage *sk = NULL; |
Christopher Faulet | 9857232 | 2020-03-30 13:16:44 +0200 | [diff] [blame] | 4273 | char *comment = NULL, *sni = NULL, *alpn = NULL; |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 4274 | struct sample_expr *port_expr = NULL; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4275 | unsigned short conn_opts = 0; |
| 4276 | long port = 0; |
Christopher Faulet | 9857232 | 2020-03-30 13:16:44 +0200 | [diff] [blame] | 4277 | int alpn_len = 0; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4278 | |
| 4279 | list_for_each_entry(chk, rules, list) { |
Gaetan Rivet | 707b52f | 2020-02-21 18:14:59 +0100 | [diff] [blame] | 4280 | if (chk->action != TCPCHK_ACT_COMMENT && chk->action != TCPCHK_ACT_ACTION_KW) |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4281 | break; |
| 4282 | } |
| 4283 | if (&chk->list != rules && chk->action != TCPCHK_ACT_CONNECT) { |
Gaetan Rivet | 707b52f | 2020-02-21 18:14:59 +0100 | [diff] [blame] | 4284 | memprintf(errmsg, "first step MUST also be a 'connect', " |
| 4285 | "optionnaly preceded by a 'set-var', an 'unset-var' or a 'comment', " |
| 4286 | "when there is a 'connect' step in the tcp-check ruleset"); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4287 | goto error; |
| 4288 | } |
| 4289 | |
| 4290 | cur_arg++; |
| 4291 | while (*(args[cur_arg])) { |
Christopher Faulet | 4dce592 | 2020-03-30 13:54:42 +0200 | [diff] [blame] | 4292 | if (strcmp(args[cur_arg], "default") == 0) { |
| 4293 | if (cur_arg != 2 || *(args[cur_arg+1])) { |
| 4294 | memprintf(errmsg, "'%s' is exclusive with all other options", args[cur_arg]); |
| 4295 | goto error; |
| 4296 | } |
| 4297 | conn_opts = TCPCHK_OPT_DEFAULT_CONNECT; |
| 4298 | } |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 4299 | else if (strcmp(args[cur_arg], "addr") == 0) { |
| 4300 | int port1, port2; |
| 4301 | struct protocol *proto; |
| 4302 | |
| 4303 | if (!*(args[cur_arg+1])) { |
| 4304 | memprintf(errmsg, "'%s' expects <ipv4|ipv6> as argument.", args[cur_arg]); |
| 4305 | goto error; |
| 4306 | } |
| 4307 | |
| 4308 | sk = str2sa_range(args[cur_arg+1], NULL, &port1, &port2, errmsg, NULL, NULL, 1); |
| 4309 | if (!sk) { |
| 4310 | memprintf(errmsg, "'%s' : %s.", args[cur_arg], *errmsg); |
| 4311 | goto error; |
| 4312 | } |
| 4313 | |
| 4314 | proto = protocol_by_family(sk->ss_family); |
| 4315 | if (!proto || !proto->connect) { |
| 4316 | memprintf(errmsg, "'%s' : connect() not supported for this address family.\n", |
| 4317 | args[cur_arg]); |
| 4318 | goto error; |
| 4319 | } |
| 4320 | |
| 4321 | if (port1 != port2) { |
| 4322 | memprintf(errmsg, "'%s' : port ranges and offsets are not allowed in '%s'\n", |
| 4323 | args[cur_arg], args[cur_arg+1]); |
| 4324 | goto error; |
| 4325 | } |
| 4326 | |
| 4327 | cur_arg++; |
| 4328 | } |
Christopher Faulet | 4dce592 | 2020-03-30 13:54:42 +0200 | [diff] [blame] | 4329 | else if (strcmp(args[cur_arg], "port") == 0) { |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 4330 | const char *p, *end; |
| 4331 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4332 | if (!*(args[cur_arg+1])) { |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 4333 | memprintf(errmsg, "'%s' expects a port number or a sample expression as argument.", args[cur_arg]); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4334 | goto error; |
| 4335 | } |
| 4336 | cur_arg++; |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 4337 | |
| 4338 | port = 0; |
| 4339 | release_sample_expr(port_expr); |
| 4340 | p = args[cur_arg]; end = p + strlen(p); |
| 4341 | port = read_uint(&p, end); |
| 4342 | if (p != end) { |
| 4343 | int idx = 0; |
| 4344 | |
| 4345 | px->conf.args.ctx = ARGC_SRV; |
| 4346 | port_expr = sample_parse_expr((char *[]){args[cur_arg], NULL}, &idx, |
| 4347 | file, line, errmsg, &px->conf.args, NULL); |
| 4348 | |
| 4349 | if (!port_expr) { |
| 4350 | memprintf(errmsg, "error detected while parsing port expression : %s", *errmsg); |
| 4351 | goto error; |
| 4352 | } |
| 4353 | if (!(port_expr->fetch->val & SMP_VAL_BE_CHK_RUL)) { |
| 4354 | memprintf(errmsg, "error detected while parsing port expression : " |
| 4355 | " fetch method '%s' extracts information from '%s', " |
| 4356 | "none of which is available here.\n", |
| 4357 | args[cur_arg], sample_src_names(port_expr->fetch->use)); |
| 4358 | goto error; |
| 4359 | } |
| 4360 | px->http_needed |= !!(port_expr->fetch->use & SMP_USE_HTTP_ANY); |
| 4361 | } |
| 4362 | else if (port > 65535 || port < 1) { |
| 4363 | memprintf(errmsg, "expects a valid TCP port (from range 1 to 65535) or a sample expression, got %s.", |
| 4364 | args[cur_arg]); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4365 | goto error; |
| 4366 | } |
| 4367 | } |
| 4368 | else if (strcmp(args[cur_arg], "comment") == 0) { |
| 4369 | if (!*(args[cur_arg+1])) { |
| 4370 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 4371 | goto error; |
| 4372 | } |
| 4373 | cur_arg++; |
| 4374 | free(comment); |
| 4375 | comment = strdup(args[cur_arg]); |
| 4376 | if (!comment) { |
| 4377 | memprintf(errmsg, "out of memory"); |
| 4378 | goto error; |
| 4379 | } |
| 4380 | } |
| 4381 | else if (strcmp(args[cur_arg], "send-proxy") == 0) |
| 4382 | conn_opts |= TCPCHK_OPT_SEND_PROXY; |
Christopher Faulet | 085426a | 2020-03-30 13:07:02 +0200 | [diff] [blame] | 4383 | else if (strcmp(args[cur_arg], "via-socks4") == 0) |
| 4384 | conn_opts |= TCPCHK_OPT_SOCKS4; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4385 | else if (strcmp(args[cur_arg], "linger") == 0) |
| 4386 | conn_opts |= TCPCHK_OPT_LINGER; |
| 4387 | #ifdef USE_OPENSSL |
| 4388 | else if (strcmp(args[cur_arg], "ssl") == 0) { |
| 4389 | px->options |= PR_O_TCPCHK_SSL; |
| 4390 | conn_opts |= TCPCHK_OPT_SSL; |
| 4391 | } |
Christopher Faulet | 79b31d4 | 2020-03-30 13:00:05 +0200 | [diff] [blame] | 4392 | else if (strcmp(args[cur_arg], "sni") == 0) { |
| 4393 | if (!*(args[cur_arg+1])) { |
| 4394 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 4395 | goto error; |
| 4396 | } |
| 4397 | cur_arg++; |
| 4398 | free(sni); |
| 4399 | sni = strdup(args[cur_arg]); |
| 4400 | if (!sni) { |
| 4401 | memprintf(errmsg, "out of memory"); |
| 4402 | goto error; |
| 4403 | } |
| 4404 | } |
Christopher Faulet | 9857232 | 2020-03-30 13:16:44 +0200 | [diff] [blame] | 4405 | else if (strcmp(args[cur_arg], "alpn") == 0) { |
| 4406 | #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation |
| 4407 | free(alpn); |
| 4408 | if (ssl_sock_parse_alpn(args[cur_arg + 1], &alpn, &alpn_len, errmsg)) { |
| 4409 | memprintf(errmsg, "'%s' : %s", args[cur_arg], *errmsg); |
| 4410 | goto error; |
| 4411 | } |
| 4412 | cur_arg++; |
| 4413 | #else |
| 4414 | memprintf(errmsg, "'%s' : library does not support TLS ALPN extension.", args[cur_arg]); |
| 4415 | goto error; |
| 4416 | #endif |
| 4417 | } |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4418 | #endif /* USE_OPENSSL */ |
| 4419 | |
| 4420 | else { |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 4421 | memprintf(errmsg, "expects 'comment', 'port', 'addr', 'send-proxy'" |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4422 | #ifdef USE_OPENSSL |
Christopher Faulet | 9857232 | 2020-03-30 13:16:44 +0200 | [diff] [blame] | 4423 | ", 'ssl', 'sni', 'alpn'" |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4424 | #endif /* USE_OPENSSL */ |
Christopher Faulet | 4dce592 | 2020-03-30 13:54:42 +0200 | [diff] [blame] | 4425 | " or 'via-socks4', 'linger', 'default' but got '%s' as argument.", |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4426 | args[cur_arg]); |
| 4427 | goto error; |
| 4428 | } |
| 4429 | cur_arg++; |
| 4430 | } |
| 4431 | |
| 4432 | chk = calloc(1, sizeof(*chk)); |
| 4433 | if (!chk) { |
| 4434 | memprintf(errmsg, "out of memory"); |
| 4435 | goto error; |
| 4436 | } |
Gaetan Rivet | 06d963a | 2020-02-21 18:49:05 +0100 | [diff] [blame] | 4437 | chk->action = TCPCHK_ACT_CONNECT; |
| 4438 | chk->comment = comment; |
| 4439 | chk->connect.port = port; |
| 4440 | chk->connect.options = conn_opts; |
Christopher Faulet | 79b31d4 | 2020-03-30 13:00:05 +0200 | [diff] [blame] | 4441 | chk->connect.sni = sni; |
Christopher Faulet | 9857232 | 2020-03-30 13:16:44 +0200 | [diff] [blame] | 4442 | chk->connect.alpn = alpn; |
| 4443 | chk->connect.alpn_len= alpn_len; |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 4444 | chk->connect.port_expr= port_expr; |
Christopher Faulet | 5c28874 | 2020-03-31 08:15:58 +0200 | [diff] [blame] | 4445 | if (sk) |
| 4446 | chk->connect.addr = *sk; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4447 | return chk; |
| 4448 | |
| 4449 | error: |
Christopher Faulet | 9857232 | 2020-03-30 13:16:44 +0200 | [diff] [blame] | 4450 | free(alpn); |
Christopher Faulet | 79b31d4 | 2020-03-30 13:00:05 +0200 | [diff] [blame] | 4451 | free(sni); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4452 | free(comment); |
Christopher Faulet | b7d3009 | 2020-03-30 15:19:03 +0200 | [diff] [blame] | 4453 | release_sample_expr(port_expr); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4454 | return NULL; |
| 4455 | } |
| 4456 | |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 4457 | static struct tcpcheck_rule *parse_tcpcheck_send(char **args, int cur_arg, struct proxy *px, struct list *rules, |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4458 | const char *file, int line, char **errmsg) |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4459 | { |
| 4460 | struct tcpcheck_rule *chk = NULL; |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 4461 | char *comment = NULL, *data = NULL; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 4462 | enum tcpcheck_send_type type = TCPCHK_SEND_UNDEF; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4463 | |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 4464 | type = ((strcmp(args[cur_arg], "send-binary") == 0) ? TCPCHK_SEND_BINARY : TCPCHK_SEND_STRING); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4465 | if (!*(args[cur_arg+1])) { |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 4466 | memprintf(errmsg, "'%s' expects a %s as argument", |
| 4467 | (type == TCPCHK_SEND_BINARY ? "binary string": "string"), args[cur_arg]); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4468 | goto error; |
| 4469 | } |
| 4470 | |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 4471 | data = args[cur_arg+1]; |
| 4472 | |
| 4473 | cur_arg += 2; |
| 4474 | while (*(args[cur_arg])) { |
| 4475 | if (strcmp(args[cur_arg], "comment") == 0) { |
| 4476 | if (!*(args[cur_arg+1])) { |
| 4477 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 4478 | goto error; |
| 4479 | } |
| 4480 | cur_arg++; |
| 4481 | free(comment); |
| 4482 | comment = strdup(args[cur_arg]); |
| 4483 | if (!comment) { |
| 4484 | memprintf(errmsg, "out of memory"); |
| 4485 | goto error; |
| 4486 | } |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4487 | } |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 4488 | else if (strcmp(args[cur_arg], "log-format") == 0) { |
| 4489 | if (type == TCPCHK_SEND_BINARY) |
| 4490 | type = TCPCHK_SEND_BINARY_LF; |
| 4491 | else if (type == TCPCHK_SEND_STRING) |
| 4492 | type = TCPCHK_SEND_STRING_LF; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4493 | } |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 4494 | else { |
| 4495 | memprintf(errmsg, "expects 'comment', 'log-format' but got '%s' as argument.", |
| 4496 | args[cur_arg]); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4497 | goto error; |
| 4498 | } |
| 4499 | cur_arg++; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4500 | } |
| 4501 | |
| 4502 | chk = calloc(1, sizeof(*chk)); |
| 4503 | if (!chk) { |
| 4504 | memprintf(errmsg, "out of memory"); |
| 4505 | goto error; |
| 4506 | } |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 4507 | chk->action = TCPCHK_ACT_SEND; |
| 4508 | chk->comment = comment; |
| 4509 | chk->send.type = type; |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 4510 | |
| 4511 | switch (chk->send.type) { |
| 4512 | case TCPCHK_SEND_STRING: |
| 4513 | chk->send.data = ist2(strdup(data), strlen(data)); |
| 4514 | if (!isttest(chk->send.data)) { |
| 4515 | memprintf(errmsg, "out of memory"); |
| 4516 | goto error; |
| 4517 | } |
| 4518 | break; |
| 4519 | case TCPCHK_SEND_BINARY: |
| 4520 | if (parse_binary(data, &chk->send.data.ptr, (int *)&chk->send.data.len, errmsg) == 0) { |
| 4521 | memprintf(errmsg, "'%s' invalid binary string (%s).\n", data, *errmsg); |
| 4522 | goto error; |
| 4523 | } |
| 4524 | break; |
| 4525 | case TCPCHK_SEND_STRING_LF: |
| 4526 | case TCPCHK_SEND_BINARY_LF: |
| 4527 | LIST_INIT(&chk->send.fmt); |
| 4528 | px->conf.args.ctx = ARGC_SRV; |
| 4529 | if (!parse_logformat_string(data, px, &chk->send.fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 4530 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", data, *errmsg); |
| 4531 | goto error; |
| 4532 | } |
| 4533 | break; |
| 4534 | case TCPCHK_SEND_UNDEF: |
| 4535 | goto error; |
| 4536 | } |
| 4537 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4538 | return chk; |
| 4539 | |
| 4540 | error: |
Christopher Faulet | f50f4e9 | 2020-03-30 19:52:29 +0200 | [diff] [blame] | 4541 | free(chk); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4542 | free(comment); |
| 4543 | return NULL; |
| 4544 | } |
| 4545 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4546 | static struct tcpcheck_rule *parse_tcpcheck_comment(char **args, int cur_arg, struct proxy *px, struct list *rules, |
| 4547 | const char *file, int line, char **errmsg) |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4548 | { |
| 4549 | struct tcpcheck_rule *chk = NULL; |
| 4550 | char *comment = NULL; |
| 4551 | |
| 4552 | if (!*(args[cur_arg+1])) { |
| 4553 | memprintf(errmsg, "expects a string as argument"); |
| 4554 | goto error; |
| 4555 | } |
| 4556 | cur_arg++; |
| 4557 | comment = strdup(args[cur_arg]); |
| 4558 | if (!comment) { |
| 4559 | memprintf(errmsg, "out of memory"); |
| 4560 | goto error; |
| 4561 | } |
| 4562 | |
| 4563 | chk = calloc(1, sizeof(*chk)); |
| 4564 | if (!chk) { |
| 4565 | memprintf(errmsg, "out of memory"); |
| 4566 | goto error; |
| 4567 | } |
| 4568 | chk->action = TCPCHK_ACT_COMMENT; |
| 4569 | chk->comment = comment; |
| 4570 | return chk; |
| 4571 | |
| 4572 | error: |
| 4573 | free(comment); |
| 4574 | return NULL; |
| 4575 | } |
| 4576 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4577 | static struct tcpcheck_rule *parse_tcpcheck_expect(char **args, int cur_arg, struct proxy *px, struct list *rules, |
| 4578 | const char *file, int line, char **errmsg) |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4579 | { |
| 4580 | struct tcpcheck_rule *prev_check, *chk = NULL; |
Christopher Faulet | 98cc57c | 2020-04-01 20:52:31 +0200 | [diff] [blame^] | 4581 | struct sample_expr *status_expr = NULL; |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 4582 | char *str, *on_success_msg, *on_error_msg, *comment, *pattern; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4583 | enum tcpcheck_expect_type type = TCPCHK_EXPECT_UNDEF; |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 4584 | enum healthcheck_status err_st = HCHK_STATUS_L7RSP; |
| 4585 | enum healthcheck_status tout_st = HCHK_STATUS_L7TOUT; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4586 | long min_recv = -1; |
| 4587 | int inverse = 0, with_capture = 0; |
| 4588 | |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 4589 | str = on_success_msg = on_error_msg = comment = pattern = NULL; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4590 | if (!*(args[cur_arg+1]) || !*(args[cur_arg+2])) { |
| 4591 | memprintf(errmsg, "expects a pattern (type+string) as arguments"); |
| 4592 | goto error; |
| 4593 | } |
| 4594 | |
| 4595 | cur_arg++; |
| 4596 | while (*(args[cur_arg])) { |
| 4597 | int in_pattern = 0; |
| 4598 | |
| 4599 | rescan: |
| 4600 | if (strcmp(args[cur_arg], "min-recv") == 0) { |
| 4601 | if (in_pattern) { |
| 4602 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 4603 | goto error; |
| 4604 | } |
| 4605 | if (!*(args[cur_arg+1])) { |
| 4606 | memprintf(errmsg, "'%s' expects a integer as argument", args[cur_arg]); |
| 4607 | goto error; |
| 4608 | } |
| 4609 | /* Use an signed integer here because of chksize */ |
| 4610 | cur_arg++; |
| 4611 | min_recv = atol(args[cur_arg]); |
| 4612 | if (min_recv < -1 || min_recv > INT_MAX) { |
| 4613 | memprintf(errmsg, "'%s' expects -1 or an integer from 0 to INT_MAX" , args[cur_arg-1]); |
| 4614 | goto error; |
| 4615 | } |
| 4616 | } |
| 4617 | else if (*(args[cur_arg]) == '!') { |
| 4618 | in_pattern = 1; |
| 4619 | while (*(args[cur_arg]) == '!') { |
| 4620 | inverse = !inverse; |
| 4621 | args[cur_arg]++; |
| 4622 | } |
| 4623 | if (!*(args[cur_arg])) |
| 4624 | cur_arg++; |
| 4625 | goto rescan; |
| 4626 | } |
| 4627 | else if (strcmp(args[cur_arg], "string") == 0 || strcmp(args[cur_arg], "binary") == 0 || |
| 4628 | strcmp(args[cur_arg], "rstring") == 0 || strcmp(args[cur_arg], "rbinary") == 0) { |
| 4629 | if (type != TCPCHK_EXPECT_UNDEF) { |
| 4630 | memprintf(errmsg, "only on pattern expected"); |
| 4631 | goto error; |
| 4632 | } |
| 4633 | type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_STRING : |
| 4634 | ((*(args[cur_arg]) == 'b') ? TCPCHK_EXPECT_BINARY : |
| 4635 | ((*(args[cur_arg]+1) == 's') ? TCPCHK_EXPECT_REGEX : TCPCHK_EXPECT_REGEX_BINARY))); |
| 4636 | |
| 4637 | if (!*(args[cur_arg+1])) { |
| 4638 | memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]); |
| 4639 | goto error; |
| 4640 | } |
| 4641 | cur_arg++; |
| 4642 | pattern = args[cur_arg]; |
| 4643 | } |
| 4644 | else if (strcmp(args[cur_arg], "comment") == 0) { |
| 4645 | if (in_pattern) { |
| 4646 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 4647 | goto error; |
| 4648 | } |
| 4649 | if (!*(args[cur_arg+1])) { |
| 4650 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 4651 | goto error; |
| 4652 | } |
| 4653 | cur_arg++; |
| 4654 | free(comment); |
| 4655 | comment = strdup(args[cur_arg]); |
| 4656 | if (!comment) { |
| 4657 | memprintf(errmsg, "out of memory"); |
| 4658 | goto error; |
| 4659 | } |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 4660 | } |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 4661 | else if (strcmp(args[cur_arg], "on-success") == 0) { |
| 4662 | if (in_pattern) { |
| 4663 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 4664 | goto error; |
| 4665 | } |
| 4666 | if (!*(args[cur_arg+1])) { |
| 4667 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 4668 | goto error; |
| 4669 | } |
| 4670 | cur_arg++; |
| 4671 | free(on_success_msg); |
| 4672 | on_success_msg = strdup(args[cur_arg]); |
| 4673 | if (!on_success_msg) { |
| 4674 | memprintf(errmsg, "out of memory"); |
| 4675 | goto error; |
| 4676 | } |
| 4677 | } |
| 4678 | else if (strcmp(args[cur_arg], "on-error") == 0) { |
| 4679 | if (in_pattern) { |
| 4680 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 4681 | goto error; |
| 4682 | } |
| 4683 | if (!*(args[cur_arg+1])) { |
| 4684 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 4685 | goto error; |
| 4686 | } |
| 4687 | cur_arg++; |
| 4688 | free(on_error_msg); |
| 4689 | on_error_msg = strdup(args[cur_arg]); |
| 4690 | if (!on_error_msg) { |
| 4691 | memprintf(errmsg, "out of memory"); |
| 4692 | goto error; |
| 4693 | } |
| 4694 | } |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 4695 | else if (strcmp(args[cur_arg], "error-status") == 0) { |
| 4696 | if (in_pattern) { |
| 4697 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 4698 | goto error; |
| 4699 | } |
| 4700 | if (!*(args[cur_arg+1])) { |
| 4701 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 4702 | goto error; |
| 4703 | } |
| 4704 | if (strcasecmp(args[cur_arg+1], "L7RSP") == 0) |
| 4705 | err_st = HCHK_STATUS_L7RSP; |
| 4706 | else if (strcasecmp(args[cur_arg+1], "L7STS") == 0) |
| 4707 | err_st = HCHK_STATUS_L7STS; |
| 4708 | else if (strcasecmp(args[cur_arg+1], "L6RSP") == 0) |
| 4709 | err_st = HCHK_STATUS_L6RSP; |
| 4710 | else if (strcasecmp(args[cur_arg+1], "L4CON") == 0) |
| 4711 | err_st = HCHK_STATUS_L4CON; |
| 4712 | else { |
| 4713 | memprintf(errmsg, "'%s' only supports 'L4CON', 'L6RSP', 'L7RSP' or 'L7STS' status (got '%s').", |
| 4714 | args[cur_arg], args[cur_arg+1]); |
| 4715 | goto error; |
| 4716 | } |
Christopher Faulet | 98cc57c | 2020-04-01 20:52:31 +0200 | [diff] [blame^] | 4717 | cur_arg++; |
| 4718 | } |
| 4719 | else if (strcmp(args[cur_arg], "status-code") == 0) { |
| 4720 | int idx = 0; |
| 4721 | |
| 4722 | if (in_pattern) { |
| 4723 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 4724 | goto error; |
| 4725 | } |
| 4726 | if (!*(args[cur_arg+1])) { |
| 4727 | memprintf(errmsg, "'%s' expects an expression as argument", args[cur_arg]); |
| 4728 | goto error; |
| 4729 | } |
| 4730 | |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 4731 | cur_arg++; |
Christopher Faulet | 98cc57c | 2020-04-01 20:52:31 +0200 | [diff] [blame^] | 4732 | release_sample_expr(status_expr); |
| 4733 | px->conf.args.ctx = ARGC_SRV; |
| 4734 | status_expr = sample_parse_expr((char *[]){args[cur_arg], NULL}, &idx, |
| 4735 | file, line, errmsg, &px->conf.args, NULL); |
| 4736 | if (!status_expr) { |
| 4737 | memprintf(errmsg, "error detected while parsing status-code expression : %s", *errmsg); |
| 4738 | goto error; |
| 4739 | } |
| 4740 | if (!(status_expr->fetch->val & SMP_VAL_BE_CHK_RUL)) { |
| 4741 | memprintf(errmsg, "error detected while parsing status-code expression : " |
| 4742 | " fetch method '%s' extracts information from '%s', " |
| 4743 | "none of which is available here.\n", |
| 4744 | args[cur_arg], sample_src_names(status_expr->fetch->use)); |
| 4745 | goto error; |
| 4746 | } |
| 4747 | px->http_needed |= !!(status_expr->fetch->use & SMP_USE_HTTP_ANY); |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 4748 | } |
| 4749 | else if (strcmp(args[cur_arg], "tout-status") == 0) { |
| 4750 | if (in_pattern) { |
| 4751 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 4752 | goto error; |
| 4753 | } |
| 4754 | if (!*(args[cur_arg+1])) { |
| 4755 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 4756 | goto error; |
| 4757 | } |
| 4758 | if (strcasecmp(args[cur_arg+1], "L7TOUT") == 0) |
| 4759 | tout_st = HCHK_STATUS_L7TOUT; |
| 4760 | else if (strcasecmp(args[cur_arg+1], "L6TOUT") == 0) |
| 4761 | tout_st = HCHK_STATUS_L6TOUT; |
| 4762 | else if (strcasecmp(args[cur_arg+1], "L4TOUT") == 0) |
| 4763 | tout_st = HCHK_STATUS_L4TOUT; |
| 4764 | else { |
| 4765 | memprintf(errmsg, "'%s' only supports 'L4TOUT', 'L6TOUT' or 'L7TOUT' status (got '%s').", |
| 4766 | args[cur_arg], args[cur_arg+1]); |
| 4767 | goto error; |
| 4768 | } |
| 4769 | cur_arg++; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4770 | } |
| 4771 | else { |
| 4772 | memprintf(errmsg, "'only supports min-recv, '[!]binary', '[!]string', '[!]rstring', '[!]rbinary'" |
| 4773 | " or comment but got '%s' as argument.", args[cur_arg]); |
| 4774 | goto error; |
| 4775 | } |
| 4776 | |
| 4777 | cur_arg++; |
| 4778 | } |
| 4779 | |
| 4780 | if (comment) { |
| 4781 | char *p = comment; |
| 4782 | |
| 4783 | while (*p) { |
| 4784 | if (*p == '\\') { |
| 4785 | p++; |
| 4786 | if (!*p || !isdigit((unsigned char)*p) || |
| 4787 | (*p == 'x' && (!*(p+1) || !*(p+2) || !ishex(*(p+1)) || !ishex(*(p+2))))) { |
| 4788 | memprintf(errmsg, "invalid backreference in 'comment' argument"); |
| 4789 | goto error; |
| 4790 | } |
| 4791 | with_capture = 1; |
| 4792 | } |
| 4793 | p++; |
| 4794 | } |
| 4795 | if (with_capture && !inverse) |
| 4796 | memprintf(errmsg, "using backreference in a positive expect comment is useless"); |
| 4797 | } |
| 4798 | |
| 4799 | chk = calloc(1, sizeof(*chk)); |
| 4800 | if (!chk) { |
| 4801 | memprintf(errmsg, "out of memory"); |
| 4802 | goto error; |
| 4803 | } |
| 4804 | chk->action = TCPCHK_ACT_EXPECT; |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 4805 | LIST_INIT(&chk->expect.onerror_fmt); |
| 4806 | LIST_INIT(&chk->expect.onsuccess_fmt); |
| 4807 | chk->comment = comment; comment = NULL; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4808 | chk->expect.type = type; |
| 4809 | chk->expect.min_recv = min_recv; |
| 4810 | chk->expect.inverse = inverse; |
| 4811 | chk->expect.with_capture = with_capture; |
Christopher Faulet | cf80f2f | 2020-04-01 11:04:52 +0200 | [diff] [blame] | 4812 | chk->expect.err_status = err_st; |
| 4813 | chk->expect.tout_status = tout_st; |
Christopher Faulet | 98cc57c | 2020-04-01 20:52:31 +0200 | [diff] [blame^] | 4814 | chk->expect.status_expr = status_expr; status_expr = NULL; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4815 | |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 4816 | if (on_success_msg) { |
| 4817 | px->conf.args.ctx = ARGC_SRV; |
| 4818 | if (!parse_logformat_string(on_success_msg, px, &chk->expect.onsuccess_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 4819 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", on_success_msg, *errmsg); |
| 4820 | goto error; |
| 4821 | } |
| 4822 | free(on_success_msg); |
| 4823 | on_success_msg = NULL; |
| 4824 | } |
| 4825 | if (on_error_msg) { |
| 4826 | px->conf.args.ctx = ARGC_SRV; |
| 4827 | if (!parse_logformat_string(on_error_msg, px, &chk->expect.onerror_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) { |
| 4828 | memprintf(errmsg, "'%s' invalid log-format string (%s).\n", on_error_msg, *errmsg); |
| 4829 | goto error; |
| 4830 | } |
| 4831 | free(on_error_msg); |
| 4832 | on_error_msg = NULL; |
| 4833 | } |
| 4834 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4835 | switch (chk->expect.type) { |
| 4836 | case TCPCHK_EXPECT_STRING: |
| 4837 | chk->expect.string = strdup(pattern); |
| 4838 | chk->expect.length = strlen(pattern); |
| 4839 | if (!chk->expect.string) { |
| 4840 | memprintf(errmsg, "out of memory"); |
| 4841 | goto error; |
| 4842 | } |
| 4843 | break; |
| 4844 | case TCPCHK_EXPECT_BINARY: |
| 4845 | if (parse_binary(pattern, &chk->expect.string, &chk->expect.length, errmsg) == 0) { |
| 4846 | memprintf(errmsg, "invalid binary string (%s)", *errmsg); |
| 4847 | goto error; |
| 4848 | } |
| 4849 | case TCPCHK_EXPECT_REGEX: |
| 4850 | case TCPCHK_EXPECT_REGEX_BINARY: |
| 4851 | chk->expect.regex = regex_comp(pattern, 1, with_capture, errmsg); |
| 4852 | if (!chk->expect.regex) |
| 4853 | goto error; |
| 4854 | break; |
| 4855 | case TCPCHK_EXPECT_UNDEF: |
| 4856 | free(chk); |
| 4857 | memprintf(errmsg, "pattern not found"); |
| 4858 | goto error; |
| 4859 | } |
| 4860 | |
| 4861 | /* All tcp-check expect points back to the first inverse expect rule in |
| 4862 | * a chain of one or more expect rule, potentially itself. |
| 4863 | */ |
| 4864 | chk->expect.head = chk; |
| 4865 | list_for_each_entry_rev(prev_check, rules, list) { |
| 4866 | if (prev_check->action == TCPCHK_ACT_EXPECT) { |
| 4867 | if (prev_check->expect.inverse) |
| 4868 | chk->expect.head = prev_check; |
| 4869 | continue; |
| 4870 | } |
Gaetan Rivet | 0c39ecc | 2020-02-24 17:34:11 +0100 | [diff] [blame] | 4871 | if (prev_check->action != TCPCHK_ACT_COMMENT && prev_check->action != TCPCHK_ACT_ACTION_KW) |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4872 | break; |
| 4873 | } |
| 4874 | return chk; |
| 4875 | |
| 4876 | error: |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 4877 | free_tcpcheck(chk, 0); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4878 | free(str); |
| 4879 | free(comment); |
Christopher Faulet | be52b4d | 2020-04-01 16:30:22 +0200 | [diff] [blame] | 4880 | free(on_success_msg); |
| 4881 | free(on_error_msg); |
Christopher Faulet | 98cc57c | 2020-04-01 20:52:31 +0200 | [diff] [blame^] | 4882 | release_sample_expr(status_expr); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4883 | return NULL; |
| 4884 | } |
| 4885 | |
| 4886 | /* Parses the "tcp-check" proxy keyword */ |
| 4887 | static int proxy_parse_tcpcheck(char **args, int section, struct proxy *curpx, |
| 4888 | struct proxy *defpx, const char *file, int line, |
| 4889 | char **errmsg) |
| 4890 | { |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4891 | struct tcpcheck_rules *rules = &curpx->tcpcheck_rules; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4892 | struct tcpcheck_rule *chk = NULL; |
Gaetan Rivet | 5301b01 | 2020-02-25 17:19:17 +0100 | [diff] [blame] | 4893 | int index, cur_arg, ret = 0; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4894 | |
| 4895 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[0], NULL)) |
| 4896 | ret = 1; |
| 4897 | |
| 4898 | if (curpx == defpx) { |
| 4899 | memprintf(errmsg, "'%s' not allowed in 'defaults' section.", args[0]); |
| 4900 | goto error; |
| 4901 | } |
| 4902 | |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4903 | if (rules->flags & TCPCHK_RULES_DEF) { |
| 4904 | /* Only shared ruleset can be inherited from the default section */ |
| 4905 | rules->flags = 0; |
| 4906 | rules->list = NULL; |
| 4907 | } |
| 4908 | if (rules->list && (rules->flags & TCPCHK_RULES_SHARED)) { |
| 4909 | memprintf(errmsg, "%s : A shared tcp-check ruleset already configured.", args[0]); |
| 4910 | goto error; |
| 4911 | } |
| 4912 | |
| 4913 | if (!rules->list) { |
| 4914 | rules->list = calloc(1, sizeof(*rules->list)); |
| 4915 | if (!rules->list) { |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4916 | memprintf(errmsg, "%s : out of memory.", args[0]); |
| 4917 | goto error; |
| 4918 | } |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4919 | LIST_INIT(rules->list); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4920 | } |
| 4921 | |
Gaetan Rivet | 5301b01 | 2020-02-25 17:19:17 +0100 | [diff] [blame] | 4922 | index = 0; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4923 | if (!LIST_ISEMPTY(rules->list)) { |
| 4924 | chk = LIST_PREV(rules->list, typeof(chk), list); |
Gaetan Rivet | 5301b01 | 2020-02-25 17:19:17 +0100 | [diff] [blame] | 4925 | index = chk->index + 1; |
| 4926 | } |
| 4927 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4928 | cur_arg = 1; |
| 4929 | if (strcmp(args[cur_arg], "connect") == 0) |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4930 | chk = parse_tcpcheck_connect(args, cur_arg, curpx, rules->list, file, line, errmsg); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4931 | else if (strcmp(args[cur_arg], "send") == 0 || strcmp(args[cur_arg], "send-binary") == 0) |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4932 | chk = parse_tcpcheck_send(args, cur_arg, curpx, rules->list, file, line, errmsg); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4933 | else if (strcmp(args[cur_arg], "expect") == 0) |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4934 | chk = parse_tcpcheck_expect(args, cur_arg, curpx, rules->list, file, line, errmsg); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4935 | else if (strcmp(args[cur_arg], "comment") == 0) |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4936 | chk = parse_tcpcheck_comment(args, cur_arg, curpx, rules->list, file, line, errmsg); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4937 | else { |
Gaetan Rivet | 707b52f | 2020-02-21 18:14:59 +0100 | [diff] [blame] | 4938 | struct action_kw *kw = action_kw_tcp_check_lookup(args[cur_arg]); |
| 4939 | |
| 4940 | if (!kw) { |
| 4941 | action_kw_tcp_check_build_list(&trash); |
| 4942 | memprintf(errmsg, "'%s' only supports 'comment', 'connect', 'send', 'send-binary', 'expect'" |
| 4943 | "%s%s. but got '%s'", |
| 4944 | args[0], (*trash.area ? ", " : ""), trash.area, args[1]); |
| 4945 | goto error; |
| 4946 | } |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4947 | chk = parse_tcpcheck_action(args, cur_arg, curpx, rules->list, kw, file, line, errmsg); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4948 | } |
| 4949 | |
| 4950 | if (!chk) { |
| 4951 | memprintf(errmsg, "'%s %s' : %s.", args[0], args[1], *errmsg); |
| 4952 | goto error; |
| 4953 | } |
| 4954 | ret = (*errmsg != NULL); /* Handle warning */ |
| 4955 | |
| 4956 | /* No error: add the tcp-check rule in the list */ |
Gaetan Rivet | 5301b01 | 2020-02-25 17:19:17 +0100 | [diff] [blame] | 4957 | chk->index = index; |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4958 | LIST_ADDQ(rules->list, &chk->list); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4959 | return ret; |
| 4960 | |
| 4961 | error: |
Christopher Faulet | 5d503fc | 2020-03-30 20:34:34 +0200 | [diff] [blame] | 4962 | deinit_proxy_tcpcheck(curpx); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4963 | return -1; |
| 4964 | } |
| 4965 | |
| 4966 | static struct cfg_kw_list cfg_kws = {ILH, { |
| 4967 | { CFG_LISTEN, "tcp-check", proxy_parse_tcpcheck }, |
| 4968 | { 0, NULL, NULL }, |
| 4969 | }}; |
| 4970 | |
| 4971 | INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws); |
| 4972 | |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 4973 | /* |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 4974 | * Local variables: |
| 4975 | * c-indent-level: 8 |
| 4976 | * c-basic-offset: 8 |
| 4977 | * End: |
| 4978 | */ |