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 | |
| 46 | #include <proto/backend.h> |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 47 | #include <proto/checks.h> |
William Lallemand | 9ed6203 | 2016-11-21 17:49:11 +0100 | [diff] [blame] | 48 | #include <proto/stats.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 49 | #include <proto/fd.h> |
| 50 | #include <proto/log.h> |
Willy Tarreau | 53a4766 | 2017-08-28 10:53:00 +0200 | [diff] [blame] | 51 | #include <proto/mux_pt.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 52 | #include <proto/queue.h> |
Willy Tarreau | c6f4ce8 | 2009-06-10 11:09:37 +0200 | [diff] [blame] | 53 | #include <proto/port_range.h> |
Willy Tarreau | e8c66af | 2008-01-13 18:40:14 +0100 | [diff] [blame] | 54 | #include <proto/proto_tcp.h> |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 55 | #include <proto/protocol.h> |
Willy Tarreau | 2b5652f | 2006-12-31 17:46:05 +0100 | [diff] [blame] | 56 | #include <proto/proxy.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 57 | #include <proto/server.h> |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 58 | #include <proto/signal.h> |
Willy Tarreau | 9e000c6 | 2011-03-10 14:03:36 +0100 | [diff] [blame] | 59 | #include <proto/stream_interface.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 60 | #include <proto/task.h> |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 61 | #include <proto/log.h> |
| 62 | #include <proto/dns.h> |
| 63 | #include <proto/proto_udp.h> |
Olivier Houchard | 9130a96 | 2017-10-17 17:33:43 +0200 | [diff] [blame] | 64 | #include <proto/ssl_sock.h> |
Olivier Houchard | 9130a96 | 2017-10-17 17:33:43 +0200 | [diff] [blame] | 65 | |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 66 | static int httpchk_expect(struct server *s, int done); |
Simon Horman | e16c1b3 | 2015-01-30 11:22:57 +0900 | [diff] [blame] | 67 | static int tcpcheck_get_step_id(struct check *); |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 68 | static char *tcpcheck_get_step_comment(struct check *); |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 69 | static int tcpcheck_main(struct check *); |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 70 | static void __event_srv_chk_w(struct conn_stream *cs); |
Olivier Houchard | 4501c3e | 2018-08-28 19:36:18 +0200 | [diff] [blame] | 71 | static int wake_srv_chk(struct conn_stream *cs); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 72 | static void __event_srv_chk_r(struct conn_stream *cs); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 73 | |
Christopher Faulet | 31c30fd | 2020-03-26 21:10:03 +0100 | [diff] [blame] | 74 | static int srv_check_healthcheck_port(struct check *chk); |
| 75 | |
Willy Tarreau | 8ceae72 | 2018-11-26 11:58:30 +0100 | [diff] [blame] | 76 | DECLARE_STATIC_POOL(pool_head_email_alert, "email_alert", sizeof(struct email_alert)); |
| 77 | 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] | 78 | |
| 79 | |
Simon Horman | 63a4a82 | 2012-03-19 07:24:41 +0900 | [diff] [blame] | 80 | static const struct check_status check_statuses[HCHK_STATUS_SIZE] = { |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 81 | [HCHK_STATUS_UNKNOWN] = { CHK_RES_UNKNOWN, "UNK", "Unknown" }, |
| 82 | [HCHK_STATUS_INI] = { CHK_RES_UNKNOWN, "INI", "Initializing" }, |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 83 | [HCHK_STATUS_START] = { /* SPECIAL STATUS*/ }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 84 | |
Willy Tarreau | 2396418 | 2014-05-20 20:56:30 +0200 | [diff] [blame] | 85 | /* Below we have finished checks */ |
| 86 | [HCHK_STATUS_CHECKED] = { CHK_RES_NEUTRAL, "CHECKED", "No status change" }, |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 87 | [HCHK_STATUS_HANA] = { CHK_RES_FAILED, "HANA", "Health analyze" }, |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 88 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 89 | [HCHK_STATUS_SOCKERR] = { CHK_RES_FAILED, "SOCKERR", "Socket error" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 90 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 91 | [HCHK_STATUS_L4OK] = { CHK_RES_PASSED, "L4OK", "Layer4 check passed" }, |
| 92 | [HCHK_STATUS_L4TOUT] = { CHK_RES_FAILED, "L4TOUT", "Layer4 timeout" }, |
| 93 | [HCHK_STATUS_L4CON] = { CHK_RES_FAILED, "L4CON", "Layer4 connection problem" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 94 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 95 | [HCHK_STATUS_L6OK] = { CHK_RES_PASSED, "L6OK", "Layer6 check passed" }, |
| 96 | [HCHK_STATUS_L6TOUT] = { CHK_RES_FAILED, "L6TOUT", "Layer6 timeout" }, |
| 97 | [HCHK_STATUS_L6RSP] = { CHK_RES_FAILED, "L6RSP", "Layer6 invalid response" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 98 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 99 | [HCHK_STATUS_L7TOUT] = { CHK_RES_FAILED, "L7TOUT", "Layer7 timeout" }, |
| 100 | [HCHK_STATUS_L7RSP] = { CHK_RES_FAILED, "L7RSP", "Layer7 invalid response" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 101 | |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 102 | [HCHK_STATUS_L57DATA] = { /* DUMMY STATUS */ }, |
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_L7OKD] = { CHK_RES_PASSED, "L7OK", "Layer7 check passed" }, |
| 105 | [HCHK_STATUS_L7OKCD] = { CHK_RES_CONDPASS, "L7OKC", "Layer7 check conditionally passed" }, |
| 106 | [HCHK_STATUS_L7STS] = { CHK_RES_FAILED, "L7STS", "Layer7 wrong status" }, |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 107 | |
| 108 | [HCHK_STATUS_PROCERR] = { CHK_RES_FAILED, "PROCERR", "External check error" }, |
| 109 | [HCHK_STATUS_PROCTOUT] = { CHK_RES_FAILED, "PROCTOUT", "External check timeout" }, |
Cyril Bonté | 77010d8 | 2014-08-07 01:55:37 +0200 | [diff] [blame] | 110 | [HCHK_STATUS_PROCOK] = { CHK_RES_PASSED, "PROCOK", "External check passed" }, |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 111 | }; |
| 112 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 113 | const struct extcheck_env extcheck_envs[EXTCHK_SIZE] = { |
| 114 | [EXTCHK_PATH] = { "PATH", EXTCHK_SIZE_EVAL_INIT }, |
| 115 | [EXTCHK_HAPROXY_PROXY_NAME] = { "HAPROXY_PROXY_NAME", EXTCHK_SIZE_EVAL_INIT }, |
| 116 | [EXTCHK_HAPROXY_PROXY_ID] = { "HAPROXY_PROXY_ID", EXTCHK_SIZE_EVAL_INIT }, |
| 117 | [EXTCHK_HAPROXY_PROXY_ADDR] = { "HAPROXY_PROXY_ADDR", EXTCHK_SIZE_EVAL_INIT }, |
| 118 | [EXTCHK_HAPROXY_PROXY_PORT] = { "HAPROXY_PROXY_PORT", EXTCHK_SIZE_EVAL_INIT }, |
| 119 | [EXTCHK_HAPROXY_SERVER_NAME] = { "HAPROXY_SERVER_NAME", EXTCHK_SIZE_EVAL_INIT }, |
| 120 | [EXTCHK_HAPROXY_SERVER_ID] = { "HAPROXY_SERVER_ID", EXTCHK_SIZE_EVAL_INIT }, |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 121 | [EXTCHK_HAPROXY_SERVER_ADDR] = { "HAPROXY_SERVER_ADDR", EXTCHK_SIZE_ADDR }, |
| 122 | [EXTCHK_HAPROXY_SERVER_PORT] = { "HAPROXY_SERVER_PORT", EXTCHK_SIZE_UINT }, |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 123 | [EXTCHK_HAPROXY_SERVER_MAXCONN] = { "HAPROXY_SERVER_MAXCONN", EXTCHK_SIZE_EVAL_INIT }, |
| 124 | [EXTCHK_HAPROXY_SERVER_CURCONN] = { "HAPROXY_SERVER_CURCONN", EXTCHK_SIZE_ULONG }, |
| 125 | }; |
| 126 | |
Simon Horman | 63a4a82 | 2012-03-19 07:24:41 +0900 | [diff] [blame] | 127 | 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] | 128 | [HANA_STATUS_UNKNOWN] = { "Unknown", { 0, 0 }}, |
| 129 | |
| 130 | [HANA_STATUS_L4_OK] = { "L4 successful connection", { 2, 0 }}, |
| 131 | [HANA_STATUS_L4_ERR] = { "L4 unsuccessful connection", { 1, 1 }}, |
| 132 | |
| 133 | [HANA_STATUS_HTTP_OK] = { "Correct http response", { 0, 2 }}, |
| 134 | [HANA_STATUS_HTTP_STS] = { "Wrong http response", { 0, 1 }}, |
| 135 | [HANA_STATUS_HTTP_HDRRSP] = { "Invalid http response (headers)", { 0, 1 }}, |
| 136 | [HANA_STATUS_HTTP_RSP] = { "Invalid http response", { 0, 1 }}, |
| 137 | |
| 138 | [HANA_STATUS_HTTP_READ_ERROR] = { "Read error (http)", { 0, 1 }}, |
| 139 | [HANA_STATUS_HTTP_READ_TIMEOUT] = { "Read timeout (http)", { 0, 1 }}, |
| 140 | [HANA_STATUS_HTTP_BROKEN_PIPE] = { "Close from server (http)", { 0, 1 }}, |
| 141 | }; |
| 142 | |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 143 | /* checks if <err> is a real error for errno or one that can be ignored, and |
| 144 | * return 0 for these ones or <err> for real ones. |
| 145 | */ |
| 146 | static inline int unclean_errno(int err) |
| 147 | { |
| 148 | if (err == EAGAIN || err == EINPROGRESS || |
| 149 | err == EISCONN || err == EALREADY) |
| 150 | return 0; |
| 151 | return err; |
| 152 | } |
| 153 | |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 154 | /* |
| 155 | * Convert check_status code to description |
| 156 | */ |
| 157 | const char *get_check_status_description(short check_status) { |
| 158 | |
| 159 | const char *desc; |
| 160 | |
| 161 | if (check_status < HCHK_STATUS_SIZE) |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 162 | desc = check_statuses[check_status].desc; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 163 | else |
| 164 | desc = NULL; |
| 165 | |
| 166 | if (desc && *desc) |
| 167 | return desc; |
| 168 | else |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 169 | return check_statuses[HCHK_STATUS_UNKNOWN].desc; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 170 | } |
| 171 | |
| 172 | /* |
| 173 | * Convert check_status code to short info |
| 174 | */ |
| 175 | const char *get_check_status_info(short check_status) { |
| 176 | |
| 177 | const char *info; |
| 178 | |
| 179 | if (check_status < HCHK_STATUS_SIZE) |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 180 | info = check_statuses[check_status].info; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 181 | else |
| 182 | info = NULL; |
| 183 | |
| 184 | if (info && *info) |
| 185 | return info; |
| 186 | else |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 187 | return check_statuses[HCHK_STATUS_UNKNOWN].info; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 188 | } |
| 189 | |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 190 | const char *get_analyze_status(short analyze_status) { |
| 191 | |
| 192 | const char *desc; |
| 193 | |
| 194 | if (analyze_status < HANA_STATUS_SIZE) |
| 195 | desc = analyze_statuses[analyze_status].desc; |
| 196 | else |
| 197 | desc = NULL; |
| 198 | |
| 199 | if (desc && *desc) |
| 200 | return desc; |
| 201 | else |
| 202 | return analyze_statuses[HANA_STATUS_UNKNOWN].desc; |
| 203 | } |
| 204 | |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 205 | /* |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 206 | * Set check->status, update check->duration and fill check->result with |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 207 | * an adequate CHK_RES_* value. The new check->health is computed based |
| 208 | * on the result. |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 209 | * |
| 210 | * Show information in logs about failed health check if server is UP |
| 211 | * or succeeded health checks if server is DOWN. |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 212 | */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 213 | 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] | 214 | { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 215 | struct server *s = check->server; |
Willy Tarreau | bef1b32 | 2014-05-13 21:01:39 +0200 | [diff] [blame] | 216 | short prev_status = check->status; |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 217 | int report = 0; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 218 | |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 219 | if (status == HCHK_STATUS_START) { |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 220 | check->result = CHK_RES_UNKNOWN; /* no result yet */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 221 | check->desc[0] = '\0'; |
| 222 | check->start = now; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 223 | return; |
| 224 | } |
| 225 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 226 | if (!check->status) |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 227 | return; |
| 228 | |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 229 | if (desc && *desc) { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 230 | strncpy(check->desc, desc, HCHK_DESC_LEN-1); |
| 231 | check->desc[HCHK_DESC_LEN-1] = '\0'; |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 232 | } else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 233 | check->desc[0] = '\0'; |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 234 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 235 | check->status = status; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 236 | if (check_statuses[status].result) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 237 | check->result = check_statuses[status].result; |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 238 | |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 239 | if (status == HCHK_STATUS_HANA) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 240 | check->duration = -1; |
| 241 | else if (!tv_iszero(&check->start)) { |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 242 | /* set_server_check_status() may be called more than once */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 243 | check->duration = tv_ms_elapsed(&check->start, &now); |
| 244 | tv_zero(&check->start); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 245 | } |
| 246 | |
Willy Tarreau | 2396418 | 2014-05-20 20:56:30 +0200 | [diff] [blame] | 247 | /* no change is expected if no state change occurred */ |
| 248 | if (check->result == CHK_RES_NEUTRAL) |
| 249 | return; |
| 250 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 251 | /* If the check was really just sending a mail, it won't have an |
| 252 | * associated server, so we're done now. |
| 253 | */ |
| 254 | if (!s) |
| 255 | return; |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 256 | report = 0; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 257 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 258 | switch (check->result) { |
| 259 | case CHK_RES_FAILED: |
Willy Tarreau | 12634e1 | 2014-05-23 11:32:36 +0200 | [diff] [blame] | 260 | /* Failure to connect to the agent as a secondary check should not |
| 261 | * cause the server to be marked down. |
| 262 | */ |
| 263 | if ((!(check->state & CHK_ST_AGENT) || |
Simon Horman | eaabd52 | 2015-02-26 11:26:17 +0900 | [diff] [blame] | 264 | (check->status >= HCHK_STATUS_L57DATA)) && |
Christopher Faulet | b119a79 | 2018-05-02 12:12:45 +0200 | [diff] [blame] | 265 | (check->health > 0)) { |
Olivier Houchard | 7059c55 | 2019-03-08 18:49:32 +0100 | [diff] [blame] | 266 | _HA_ATOMIC_ADD(&s->counters.failed_checks, 1); |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 267 | report = 1; |
| 268 | check->health--; |
| 269 | if (check->health < check->rise) |
| 270 | check->health = 0; |
| 271 | } |
| 272 | break; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 273 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 274 | case CHK_RES_PASSED: |
| 275 | case CHK_RES_CONDPASS: /* "condpass" cannot make the first step but it OK after a "passed" */ |
| 276 | if ((check->health < check->rise + check->fall - 1) && |
| 277 | (check->result == CHK_RES_PASSED || check->health > 0)) { |
| 278 | report = 1; |
| 279 | check->health++; |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 280 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 281 | if (check->health >= check->rise) |
| 282 | check->health = check->rise + check->fall - 1; /* OK now */ |
| 283 | } |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 284 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 285 | /* clear consecutive_errors if observing is enabled */ |
| 286 | if (s->onerror) |
| 287 | s->consecutive_errors = 0; |
| 288 | break; |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 289 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 290 | default: |
| 291 | break; |
| 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 | if (s->proxy->options2 & PR_O2_LOGHCHKS && |
| 295 | (status != prev_status || report)) { |
| 296 | chunk_printf(&trash, |
Willy Tarreau | 12634e1 | 2014-05-23 11:32:36 +0200 | [diff] [blame] | 297 | "%s check for %sserver %s/%s %s%s", |
| 298 | (check->state & CHK_ST_AGENT) ? "Agent" : "Health", |
Willy Tarreau | c93cd16 | 2014-05-13 15:54:22 +0200 | [diff] [blame] | 299 | s->flags & SRV_F_BACKUP ? "backup " : "", |
Willy Tarreau | 19d14ef | 2012-10-29 16:51:55 +0100 | [diff] [blame] | 300 | s->proxy->id, s->id, |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 301 | (check->result == CHK_RES_CONDPASS) ? "conditionally ":"", |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 302 | (check->result >= CHK_RES_PASSED) ? "succeeded" : "failed"); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 303 | |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 304 | srv_append_status(&trash, s, check, -1, 0); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 305 | |
Willy Tarreau | 19d14ef | 2012-10-29 16:51:55 +0100 | [diff] [blame] | 306 | chunk_appendf(&trash, ", status: %d/%d %s", |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 307 | (check->health >= check->rise) ? check->health - check->rise + 1 : check->health, |
| 308 | (check->health >= check->rise) ? check->fall : check->rise, |
| 309 | (check->health >= check->rise) ? (s->uweight ? "UP" : "DRAIN") : "DOWN"); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 310 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 311 | ha_warning("%s.\n", trash.area); |
| 312 | send_log(s->proxy, LOG_NOTICE, "%s.\n", trash.area); |
| 313 | send_email_alert(s, LOG_INFO, "%s", trash.area); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 314 | } |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 315 | } |
| 316 | |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 317 | /* Marks the check <check>'s server down if the current check is already failed |
| 318 | * and the server is not down yet nor in maintenance. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 319 | */ |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 320 | static void check_notify_failure(struct check *check) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 321 | { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 322 | struct server *s = check->server; |
Simon Horman | e0d1bfb | 2011-06-21 14:34:58 +0900 | [diff] [blame] | 323 | |
Willy Tarreau | 7b1d47c | 2014-05-20 14:55:13 +0200 | [diff] [blame] | 324 | /* The agent secondary check should only cause a server to be marked |
| 325 | * as down if check->status is HCHK_STATUS_L7STS, which indicates |
| 326 | * that the agent returned "fail", "stopped" or "down". |
| 327 | * The implication here is that failure to connect to the agent |
| 328 | * as a secondary check should not cause the server to be marked |
| 329 | * down. */ |
| 330 | if ((check->state & CHK_ST_AGENT) && check->status != HCHK_STATUS_L7STS) |
| 331 | return; |
| 332 | |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 333 | if (check->health > 0) |
| 334 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 335 | |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 336 | /* 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] | 337 | 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] | 338 | } |
| 339 | |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 340 | /* 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] | 341 | * it isn't in maintenance, it is not tracking a down server and other checks |
| 342 | * comply. The rule is simple : by default, a server is up, unless any of the |
| 343 | * following conditions is true : |
| 344 | * - health check failed (check->health < rise) |
| 345 | * - agent check failed (agent->health < rise) |
| 346 | * - the server tracks a down server (track && track->state == STOPPED) |
| 347 | * Note that if the server has a slowstart, it will switch to STARTING instead |
| 348 | * of RUNNING. Also, only the health checks support the nolb mode, so the |
| 349 | * agent's success may not take the server out of this mode. |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 350 | */ |
Willy Tarreau | 3e04838 | 2014-05-21 10:30:54 +0200 | [diff] [blame] | 351 | static void check_notify_success(struct check *check) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 352 | { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 353 | struct server *s = check->server; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 354 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 355 | if (s->next_admin & SRV_ADMF_MAINT) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 356 | return; |
Cyril Bonté | cd19e51 | 2010-01-31 22:34:03 +0100 | [diff] [blame] | 357 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 358 | if (s->track && s->track->next_state == SRV_ST_STOPPED) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 359 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 360 | |
Willy Tarreau | 3e04838 | 2014-05-21 10:30:54 +0200 | [diff] [blame] | 361 | if ((s->check.state & CHK_ST_ENABLED) && (s->check.health < s->check.rise)) |
| 362 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 363 | |
Willy Tarreau | 3e04838 | 2014-05-21 10:30:54 +0200 | [diff] [blame] | 364 | if ((s->agent.state & CHK_ST_ENABLED) && (s->agent.health < s->agent.rise)) |
| 365 | return; |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 366 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 367 | if ((check->state & CHK_ST_AGENT) && s->next_state == SRV_ST_STOPPING) |
Willy Tarreau | 3e04838 | 2014-05-21 10:30:54 +0200 | [diff] [blame] | 368 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 369 | |
Emeric Brun | 5a13351 | 2017-10-19 14:42:30 +0200 | [diff] [blame] | 370 | 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] | 371 | } |
| 372 | |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 373 | /* Marks the check <check> as valid and tries to set its server into stopping mode |
| 374 | * if it was running or starting, and provided it isn't in maintenance and other |
| 375 | * checks comply. The conditions for the server to be marked in stopping mode are |
| 376 | * the same as for it to be turned up. Also, only the health checks support the |
| 377 | * nolb mode. |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 378 | */ |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 379 | static void check_notify_stopping(struct check *check) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 380 | { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 381 | struct server *s = check->server; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 382 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 383 | if (s->next_admin & SRV_ADMF_MAINT) |
Willy Tarreau | af54958 | 2014-05-16 17:37:50 +0200 | [diff] [blame] | 384 | return; |
| 385 | |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 386 | if (check->state & CHK_ST_AGENT) |
| 387 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 388 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 389 | if (s->track && s->track->next_state == SRV_ST_STOPPED) |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 390 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 391 | |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 392 | if ((s->check.state & CHK_ST_ENABLED) && (s->check.health < s->check.rise)) |
| 393 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 394 | |
Willy Tarreau | db58b79 | 2014-05-21 13:57:23 +0200 | [diff] [blame] | 395 | if ((s->agent.state & CHK_ST_ENABLED) && (s->agent.health < s->agent.rise)) |
| 396 | return; |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 397 | |
Willy Tarreau | b26881a | 2017-12-23 11:16:49 +0100 | [diff] [blame] | 398 | 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] | 399 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 400 | |
Willy Tarreau | 9fe7aae | 2013-12-31 23:47:37 +0100 | [diff] [blame] | 401 | /* note: use health_adjust() only, which first checks that the observe mode is |
| 402 | * enabled. |
| 403 | */ |
| 404 | void __health_adjust(struct server *s, short status) |
Willy Tarreau | 19d14ef | 2012-10-29 16:51:55 +0100 | [diff] [blame] | 405 | { |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 406 | int failed; |
| 407 | int expire; |
| 408 | |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 409 | if (s->observe >= HANA_OBS_SIZE) |
| 410 | return; |
| 411 | |
Willy Tarreau | bb95666 | 2013-01-24 00:37:39 +0100 | [diff] [blame] | 412 | if (status >= HANA_STATUS_SIZE || !analyze_statuses[status].desc) |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 413 | return; |
| 414 | |
| 415 | switch (analyze_statuses[status].lr[s->observe - 1]) { |
| 416 | case 1: |
| 417 | failed = 1; |
| 418 | break; |
| 419 | |
| 420 | case 2: |
| 421 | failed = 0; |
| 422 | break; |
| 423 | |
| 424 | default: |
| 425 | return; |
| 426 | } |
| 427 | |
| 428 | if (!failed) { |
| 429 | /* good: clear consecutive_errors */ |
| 430 | s->consecutive_errors = 0; |
| 431 | return; |
| 432 | } |
| 433 | |
Olivier Houchard | 7059c55 | 2019-03-08 18:49:32 +0100 | [diff] [blame] | 434 | _HA_ATOMIC_ADD(&s->consecutive_errors, 1); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 435 | |
| 436 | if (s->consecutive_errors < s->consecutive_errors_limit) |
| 437 | return; |
| 438 | |
Willy Tarreau | 19d14ef | 2012-10-29 16:51:55 +0100 | [diff] [blame] | 439 | chunk_printf(&trash, "Detected %d consecutive errors, last one was: %s", |
| 440 | s->consecutive_errors, get_analyze_status(status)); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 441 | |
| 442 | switch (s->onerror) { |
| 443 | case HANA_ONERR_FASTINTER: |
| 444 | /* force fastinter - nothing to do here as all modes force it */ |
| 445 | break; |
| 446 | |
| 447 | case HANA_ONERR_SUDDTH: |
| 448 | /* simulate a pre-fatal failed health check */ |
Simon Horman | 58c3297 | 2013-11-25 10:46:38 +0900 | [diff] [blame] | 449 | if (s->check.health > s->check.rise) |
| 450 | s->check.health = s->check.rise + 1; |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 451 | |
| 452 | /* no break - fall through */ |
| 453 | |
| 454 | case HANA_ONERR_FAILCHK: |
| 455 | /* simulate a failed health check */ |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 456 | set_server_check_status(&s->check, HCHK_STATUS_HANA, |
| 457 | trash.area); |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 458 | check_notify_failure(&s->check); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 459 | break; |
| 460 | |
| 461 | case HANA_ONERR_MARKDWN: |
| 462 | /* mark server down */ |
Simon Horman | 58c3297 | 2013-11-25 10:46:38 +0900 | [diff] [blame] | 463 | s->check.health = s->check.rise; |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 464 | set_server_check_status(&s->check, HCHK_STATUS_HANA, |
| 465 | trash.area); |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 466 | check_notify_failure(&s->check); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 467 | break; |
| 468 | |
| 469 | default: |
| 470 | /* write a warning? */ |
| 471 | break; |
| 472 | } |
| 473 | |
| 474 | s->consecutive_errors = 0; |
Olivier Houchard | 7059c55 | 2019-03-08 18:49:32 +0100 | [diff] [blame] | 475 | _HA_ATOMIC_ADD(&s->counters.failed_hana, 1); |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 476 | |
Simon Horman | 6618300 | 2013-02-23 10:16:43 +0900 | [diff] [blame] | 477 | if (s->check.fastinter) { |
| 478 | expire = tick_add(now_ms, MS_TO_TICKS(s->check.fastinter)); |
Sergiy Prykhodko | 1d57e50 | 2013-09-21 12:05:00 +0300 | [diff] [blame] | 479 | if (s->check.task->expire > expire) { |
Willy Tarreau | 5b3a202 | 2012-09-28 15:01:02 +0200 | [diff] [blame] | 480 | s->check.task->expire = expire; |
Sergiy Prykhodko | 1d57e50 | 2013-09-21 12:05:00 +0300 | [diff] [blame] | 481 | /* requeue check task with new expire */ |
| 482 | task_queue(s->check.task); |
| 483 | } |
Krzysztof Piotr Oledzki | 97f07b8 | 2009-12-15 22:31:24 +0100 | [diff] [blame] | 484 | } |
| 485 | } |
| 486 | |
Willy Tarreau | a1dab55 | 2014-04-14 15:04:54 +0200 | [diff] [blame] | 487 | 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] | 488 | { |
| 489 | int sv_state; |
| 490 | int ratio; |
| 491 | int hlen = 0; |
Joseph Lynch | 514061c | 2015-01-15 17:52:59 -0800 | [diff] [blame] | 492 | char addr[46]; |
| 493 | char port[6]; |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 494 | const char *srv_hlt_st[7] = { "DOWN", "DOWN %d/%d", |
| 495 | "UP %d/%d", "UP", |
| 496 | "NOLB %d/%d", "NOLB", |
| 497 | "no check" }; |
| 498 | |
| 499 | memcpy(buffer + hlen, "X-Haproxy-Server-State: ", 24); |
| 500 | hlen += 24; |
| 501 | |
Willy Tarreau | ff5ae35 | 2013-12-11 20:36:34 +0100 | [diff] [blame] | 502 | if (!(s->check.state & CHK_ST_ENABLED)) |
| 503 | sv_state = 6; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 504 | else if (s->cur_state != SRV_ST_STOPPED) { |
Simon Horman | 58c3297 | 2013-11-25 10:46:38 +0900 | [diff] [blame] | 505 | if (s->check.health == s->check.rise + s->check.fall - 1) |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 506 | sv_state = 3; /* UP */ |
| 507 | else |
| 508 | sv_state = 2; /* going down */ |
| 509 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 510 | if (s->cur_state == SRV_ST_STOPPING) |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 511 | sv_state += 2; |
| 512 | } else { |
Simon Horman | 125d099 | 2013-02-24 17:23:38 +0900 | [diff] [blame] | 513 | if (s->check.health) |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 514 | sv_state = 1; /* going up */ |
| 515 | else |
| 516 | sv_state = 0; /* DOWN */ |
| 517 | } |
| 518 | |
Willy Tarreau | a1dab55 | 2014-04-14 15:04:54 +0200 | [diff] [blame] | 519 | hlen += snprintf(buffer + hlen, size - hlen, |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 520 | srv_hlt_st[sv_state], |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 521 | (s->cur_state != SRV_ST_STOPPED) ? (s->check.health - s->check.rise + 1) : (s->check.health), |
| 522 | (s->cur_state != SRV_ST_STOPPED) ? (s->check.fall) : (s->check.rise)); |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 523 | |
Joseph Lynch | 514061c | 2015-01-15 17:52:59 -0800 | [diff] [blame] | 524 | addr_to_str(&s->addr, addr, sizeof(addr)); |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 525 | if (s->addr.ss_family == AF_INET || s->addr.ss_family == AF_INET6) |
| 526 | snprintf(port, sizeof(port), "%u", s->svc_port); |
| 527 | else |
| 528 | *port = 0; |
Joseph Lynch | 514061c | 2015-01-15 17:52:59 -0800 | [diff] [blame] | 529 | |
| 530 | hlen += snprintf(buffer + hlen, size - hlen, "; address=%s; port=%s; name=%s/%s; node=%s; weight=%d/%d; scur=%d/%d; qcur=%d", |
| 531 | addr, port, s->proxy->id, s->id, |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 532 | global.node, |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 533 | (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] | 534 | (s->proxy->lbprm.tot_weight * s->proxy->lbprm.wmult + s->proxy->lbprm.wdiv - 1) / s->proxy->lbprm.wdiv, |
| 535 | s->cur_sess, s->proxy->beconn - s->proxy->nbpend, |
| 536 | s->nbpend); |
| 537 | |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 538 | if ((s->cur_state == SRV_ST_STARTING) && |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 539 | now.tv_sec < s->last_change + s->slowstart && |
| 540 | now.tv_sec >= s->last_change) { |
| 541 | ratio = MAX(1, 100 * (now.tv_sec - s->last_change) / s->slowstart); |
Willy Tarreau | a1dab55 | 2014-04-14 15:04:54 +0200 | [diff] [blame] | 542 | hlen += snprintf(buffer + hlen, size - hlen, "; throttle=%d%%", ratio); |
Willy Tarreau | ef78104 | 2010-01-27 11:53:01 +0100 | [diff] [blame] | 543 | } |
| 544 | |
| 545 | buffer[hlen++] = '\r'; |
| 546 | buffer[hlen++] = '\n'; |
| 547 | |
| 548 | return hlen; |
| 549 | } |
| 550 | |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 551 | /* Check the connection. If an error has already been reported or the socket is |
| 552 | * closed, keep errno intact as it is supposed to contain the valid error code. |
| 553 | * If no error is reported, check the socket's error queue using getsockopt(). |
| 554 | * Warning, this must be done only once when returning from poll, and never |
| 555 | * after an I/O error was attempted, otherwise the error queue might contain |
| 556 | * inconsistent errors. If an error is detected, the CO_FL_ERROR is set on the |
| 557 | * socket. Returns non-zero if an error was reported, zero if everything is |
| 558 | * clean (including a properly closed socket). |
| 559 | */ |
| 560 | static int retrieve_errno_from_socket(struct connection *conn) |
| 561 | { |
| 562 | int skerr; |
| 563 | socklen_t lskerr = sizeof(skerr); |
| 564 | |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 565 | if (conn->flags & CO_FL_ERROR && (unclean_errno(errno) || !conn->ctrl)) |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 566 | return 1; |
| 567 | |
Willy Tarreau | 3c72872 | 2014-01-23 13:50:42 +0100 | [diff] [blame] | 568 | if (!conn_ctrl_ready(conn)) |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 569 | return 0; |
| 570 | |
Willy Tarreau | 585744b | 2017-08-24 14:31:19 +0200 | [diff] [blame] | 571 | if (getsockopt(conn->handle.fd, SOL_SOCKET, SO_ERROR, &skerr, &lskerr) == 0) |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 572 | errno = skerr; |
| 573 | |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 574 | errno = unclean_errno(errno); |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 575 | |
| 576 | if (!errno) { |
| 577 | /* we could not retrieve an error, that does not mean there is |
| 578 | * none. Just don't change anything and only report the prior |
| 579 | * error if any. |
| 580 | */ |
| 581 | if (conn->flags & CO_FL_ERROR) |
| 582 | return 1; |
| 583 | else |
| 584 | return 0; |
| 585 | } |
| 586 | |
| 587 | conn->flags |= CO_FL_ERROR | CO_FL_SOCK_WR_SH | CO_FL_SOCK_RD_SH; |
| 588 | return 1; |
| 589 | } |
| 590 | |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 591 | /* Try to collect as much information as possible on the connection status, |
| 592 | * and adjust the server status accordingly. It may make use of <errno_bck> |
| 593 | * if non-null when the caller is absolutely certain of its validity (eg: |
| 594 | * checked just after a syscall). If the caller doesn't have a valid errno, |
| 595 | * it can pass zero, and retrieve_errno_from_socket() will be called to try |
| 596 | * to extract errno from the socket. If no error is reported, it will consider |
| 597 | * the <expired> flag. This is intended to be used when a connection error was |
| 598 | * reported in conn->flags or when a timeout was reported in <expired>. The |
| 599 | * function takes care of not updating a server status which was already set. |
| 600 | * All situations where at least one of <expired> or CO_FL_ERROR are set |
| 601 | * produce a status. |
| 602 | */ |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 603 | 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] | 604 | { |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 605 | struct conn_stream *cs = check->cs; |
| 606 | struct connection *conn = cs_conn(cs); |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 607 | const char *err_msg; |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 608 | struct buffer *chk; |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 609 | int step; |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 610 | char *comment; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 611 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 612 | if (check->result != CHK_RES_UNKNOWN) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 613 | return; |
| 614 | |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 615 | errno = unclean_errno(errno_bck); |
| 616 | if (conn && errno) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 617 | retrieve_errno_from_socket(conn); |
| 618 | |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 619 | if (conn && !(conn->flags & CO_FL_ERROR) && |
| 620 | !(cs->flags & CS_FL_ERROR) && !expired) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 621 | return; |
| 622 | |
| 623 | /* we'll try to build a meaningful error message depending on the |
| 624 | * context of the error possibly present in conn->err_code, and the |
| 625 | * socket error possibly collected above. This is useful to know the |
| 626 | * exact step of the L6 layer (eg: SSL handshake). |
| 627 | */ |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 628 | chk = get_trash_chunk(); |
| 629 | |
| 630 | if (check->type == PR_O2_TCPCHK_CHK) { |
Simon Horman | e16c1b3 | 2015-01-30 11:22:57 +0900 | [diff] [blame] | 631 | step = tcpcheck_get_step_id(check); |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 632 | if (!step) |
| 633 | chunk_printf(chk, " at initial connection step of tcp-check"); |
| 634 | else { |
| 635 | chunk_printf(chk, " at step %d of tcp-check", step); |
| 636 | /* we were looking for a string */ |
| 637 | if (check->last_started_step && check->last_started_step->action == TCPCHK_ACT_CONNECT) { |
Gaetan Rivet | 06d963a | 2020-02-21 18:49:05 +0100 | [diff] [blame] | 638 | if (check->last_started_step->connect.port) |
| 639 | chunk_appendf(chk, " (connect port %d)" ,check->last_started_step->connect.port); |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 640 | else |
| 641 | chunk_appendf(chk, " (connect)"); |
| 642 | } |
| 643 | else if (check->last_started_step && check->last_started_step->action == TCPCHK_ACT_EXPECT) { |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 644 | struct tcpcheck_expect *expect = &check->last_started_step->expect; |
| 645 | |
| 646 | switch (expect->type) { |
| 647 | case TCPCHK_EXPECT_STRING: |
| 648 | chunk_appendf(chk, " (expect string '%s')", expect->string); |
| 649 | break; |
| 650 | case TCPCHK_EXPECT_BINARY: |
| 651 | chunk_appendf(chk, " (expect binary '%s')", expect->string); |
| 652 | break; |
| 653 | case TCPCHK_EXPECT_REGEX: |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 654 | chunk_appendf(chk, " (expect regex)"); |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 655 | break; |
Gaetan Rivet | efab6c6 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 656 | case TCPCHK_EXPECT_REGEX_BINARY: |
| 657 | chunk_appendf(chk, " (expect binary regex)"); |
| 658 | break; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 659 | case TCPCHK_EXPECT_UNDEF: |
| 660 | chunk_appendf(chk, " (undefined expect!)"); |
| 661 | break; |
| 662 | } |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 663 | } |
| 664 | else if (check->last_started_step && check->last_started_step->action == TCPCHK_ACT_SEND) { |
| 665 | chunk_appendf(chk, " (send)"); |
| 666 | } |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 667 | |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 668 | comment = tcpcheck_get_step_comment(check); |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 669 | if (comment) |
| 670 | chunk_appendf(chk, " comment: '%s'", comment); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 671 | } |
| 672 | } |
| 673 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 674 | if (conn && conn->err_code) { |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 675 | if (unclean_errno(errno)) |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 676 | chunk_printf(&trash, "%s (%s)%s", conn_err_code_str(conn), strerror(errno), |
| 677 | chk->area); |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 678 | else |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 679 | chunk_printf(&trash, "%s%s", conn_err_code_str(conn), |
| 680 | chk->area); |
| 681 | err_msg = trash.area; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 682 | } |
| 683 | else { |
Willy Tarreau | c8dc20a | 2019-12-27 12:03:27 +0100 | [diff] [blame] | 684 | if (unclean_errno(errno)) { |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 685 | chunk_printf(&trash, "%s%s", strerror(errno), |
| 686 | chk->area); |
| 687 | err_msg = trash.area; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 688 | } |
| 689 | else { |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 690 | err_msg = chk->area; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 691 | } |
| 692 | } |
| 693 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 694 | if (check->state & CHK_ST_PORT_MISS) { |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 695 | /* NOTE: this is reported after <fall> tries */ |
| 696 | chunk_printf(chk, "No port available for the TCP connection"); |
| 697 | set_server_check_status(check, HCHK_STATUS_SOCKERR, err_msg); |
| 698 | } |
| 699 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 700 | if (!conn) { |
| 701 | /* connection allocation error before the connection was established */ |
| 702 | set_server_check_status(check, HCHK_STATUS_SOCKERR, err_msg); |
| 703 | } |
Willy Tarreau | c192b0a | 2020-01-23 09:11:58 +0100 | [diff] [blame] | 704 | else if (conn->flags & CO_FL_WAIT_L4_CONN) { |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 705 | /* L4 not established (yet) */ |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 706 | if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 707 | set_server_check_status(check, HCHK_STATUS_L4CON, err_msg); |
| 708 | else if (expired) |
| 709 | set_server_check_status(check, HCHK_STATUS_L4TOUT, err_msg); |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 710 | |
| 711 | /* |
| 712 | * might be due to a server IP change. |
| 713 | * Let's trigger a DNS resolution if none are currently running. |
| 714 | */ |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 715 | if (check->server) |
| 716 | dns_trigger_resolution(check->server->dns_requester); |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 717 | |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 718 | } |
Willy Tarreau | c192b0a | 2020-01-23 09:11:58 +0100 | [diff] [blame] | 719 | else if (conn->flags & CO_FL_WAIT_L6_CONN) { |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 720 | /* L6 not established (yet) */ |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 721 | if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 722 | set_server_check_status(check, HCHK_STATUS_L6RSP, err_msg); |
| 723 | else if (expired) |
| 724 | set_server_check_status(check, HCHK_STATUS_L6TOUT, err_msg); |
| 725 | } |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 726 | else if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) { |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 727 | /* I/O error after connection was established and before we could diagnose */ |
| 728 | set_server_check_status(check, HCHK_STATUS_SOCKERR, err_msg); |
| 729 | } |
| 730 | else if (expired) { |
| 731 | /* connection established but expired check */ |
| 732 | if (check->type == PR_O2_SSL3_CHK) |
| 733 | set_server_check_status(check, HCHK_STATUS_L6TOUT, err_msg); |
| 734 | else /* HTTP, SMTP, ... */ |
| 735 | set_server_check_status(check, HCHK_STATUS_L7TOUT, err_msg); |
| 736 | } |
| 737 | |
| 738 | return; |
| 739 | } |
| 740 | |
Olivier Houchard | 5c110b9 | 2018-08-14 17:04:58 +0200 | [diff] [blame] | 741 | /* This function checks if any I/O is wanted, and if so, attempts to do so */ |
| 742 | 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] | 743 | { |
Olivier Houchard | 26e1a8f | 2018-09-12 15:15:12 +0200 | [diff] [blame] | 744 | struct check *check = ctx; |
| 745 | struct conn_stream *cs = check->cs; |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 746 | struct email_alertq *q = container_of(check, typeof(*q), check); |
Olivier Houchard | bc89ad8 | 2019-07-09 17:28:51 +0200 | [diff] [blame] | 747 | int ret = 0; |
Olivier Houchard | 4501c3e | 2018-08-28 19:36:18 +0200 | [diff] [blame] | 748 | |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 749 | if (!(check->wait_list.events & SUB_RETRY_SEND)) |
Olivier Houchard | bc89ad8 | 2019-07-09 17:28:51 +0200 | [diff] [blame] | 750 | ret = wake_srv_chk(cs); |
| 751 | if (ret == 0 && !(check->wait_list.events & SUB_RETRY_RECV)) { |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 752 | if (check->server) |
| 753 | HA_SPIN_LOCK(SERVER_LOCK, &check->server->lock); |
| 754 | else |
| 755 | HA_SPIN_LOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 756 | __event_srv_chk_r(cs); |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 757 | if (check->server) |
| 758 | HA_SPIN_UNLOCK(SERVER_LOCK, &check->server->lock); |
| 759 | else |
| 760 | HA_SPIN_UNLOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 761 | } |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 762 | return NULL; |
| 763 | } |
| 764 | |
| 765 | /* same as above but protected by the server lock. |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 766 | * |
| 767 | * 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] | 768 | * via the out label. NOTE THAT THIS FUNCTION DOESN'T LOCK, YOU PROBABLY WANT |
| 769 | * TO USE event_srv_chk_w() instead. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 770 | */ |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 771 | static void __event_srv_chk_w(struct conn_stream *cs) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 772 | { |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 773 | struct connection *conn = cs->conn; |
| 774 | struct check *check = cs->data; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 775 | struct server *s = check->server; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 776 | struct task *t = check->task; |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 777 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 778 | if (unlikely(check->result == CHK_RES_FAILED)) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 779 | goto out_wakeup; |
| 780 | |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 781 | if (retrieve_errno_from_socket(conn)) { |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 782 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | 20a1834 | 2013-12-05 00:31:46 +0100 | [diff] [blame] | 783 | goto out_wakeup; |
| 784 | } |
Krzysztof Piotr Oledzki | 6492db5 | 2010-01-02 22:03:01 +0100 | [diff] [blame] | 785 | |
Willy Tarreau | 06559ac | 2013-12-05 01:53:08 +0100 | [diff] [blame] | 786 | /* here, we know that the connection is established. That's enough for |
| 787 | * a pure TCP check. |
| 788 | */ |
| 789 | if (!check->type) |
| 790 | goto out_wakeup; |
| 791 | |
Willy Tarreau | c09572f | 2017-10-04 11:58:22 +0200 | [diff] [blame] | 792 | /* wake() will take care of calling tcpcheck_main() */ |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 793 | if (check->type == PR_O2_TCPCHK_CHK) |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 794 | goto out; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 795 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 796 | if (b_data(&check->bo)) { |
Olivier Houchard | ed0f207 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 797 | 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] | 798 | b_realign_if_empty(&check->bo); |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 799 | if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) { |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 800 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 801 | goto out_wakeup; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 802 | } |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 803 | if (b_data(&check->bo)) { |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 804 | conn->mux->subscribe(cs, SUB_RETRY_SEND, &check->wait_list); |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 805 | goto out; |
| 806 | } |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 807 | } |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 808 | |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 809 | /* full request sent, we allow up to <timeout.check> if nonzero for a response */ |
| 810 | if (s->proxy->timeout.check) { |
| 811 | t->expire = tick_add_ifset(now_ms, s->proxy->timeout.check); |
| 812 | task_queue(t); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 813 | } |
Olivier Houchard | 53216e7 | 2018-10-10 15:46:36 +0200 | [diff] [blame] | 814 | goto out; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 815 | |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 816 | out_wakeup: |
Willy Tarreau | fdccded | 2008-08-29 18:19:04 +0200 | [diff] [blame] | 817 | task_wakeup(t, TASK_WOKEN_IO); |
Olivier Houchard | 910b2bc | 2018-07-17 18:49:38 +0200 | [diff] [blame] | 818 | out: |
| 819 | return; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 820 | } |
| 821 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 822 | /* |
Willy Tarreau | f3c6920 | 2006-07-09 16:42:34 +0200 | [diff] [blame] | 823 | * 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] | 824 | * 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] | 825 | * set_server_check_status() to update check->status, check->duration |
| 826 | * and check->result. |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 827 | |
| 828 | * The set_server_check_status function is called with HCHK_STATUS_L7OKD if |
| 829 | * an HTTP server replies HTTP 2xx or 3xx (valid responses), if an SMTP server |
| 830 | * returns 2xx, HCHK_STATUS_L6OK if an SSL server returns at least 5 bytes in |
| 831 | * response to an SSL HELLO (the principle is that this is enough to |
| 832 | * distinguish between an SSL server and a pure TCP relay). All other cases will |
| 833 | * call it with a proper error status like HCHK_STATUS_L7STS, HCHK_STATUS_L6RSP, |
| 834 | * etc. |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 835 | * |
| 836 | * 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] | 837 | * via the out label. |
| 838 | * |
| 839 | * This must be called with the server lock held. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 840 | */ |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 841 | static void __event_srv_chk_r(struct conn_stream *cs) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 842 | { |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 843 | struct connection *conn = cs->conn; |
| 844 | struct check *check = cs->data; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 845 | struct server *s = check->server; |
| 846 | struct task *t = check->task; |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 847 | char *desc; |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 848 | int done; |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 849 | unsigned short msglen; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 850 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 851 | if (unlikely(check->result == CHK_RES_FAILED)) |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 852 | goto out_wakeup; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 853 | |
Willy Tarreau | c09572f | 2017-10-04 11:58:22 +0200 | [diff] [blame] | 854 | /* wake() will take care of calling tcpcheck_main() */ |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 855 | if (check->type == PR_O2_TCPCHK_CHK) |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 856 | goto out; |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 857 | |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 858 | /* Warning! Linux returns EAGAIN on SO_ERROR if data are still available |
| 859 | * but the connection was closed on the remote end. Fortunately, recv still |
| 860 | * works correctly and we don't need to do the getsockopt() on linux. |
| 861 | */ |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 862 | |
| 863 | /* Set buffer to point to the end of the data already read, and check |
| 864 | * that there is free space remaining. If the buffer is full, proceed |
| 865 | * with running the checks without attempting another socket read. |
| 866 | */ |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 867 | |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 868 | done = 0; |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 869 | |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 870 | 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] | 871 | 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] | 872 | done = 1; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 873 | 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] | 874 | /* Report network errors only if we got no other data. Otherwise |
| 875 | * we'll let the upper layers decide whether the response is OK |
| 876 | * or not. It is very common that an RST sent by the server is |
| 877 | * reported as an error just after the last data chunk. |
| 878 | */ |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 879 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | c1a0796 | 2010-03-16 20:55:43 +0100 | [diff] [blame] | 880 | goto out_wakeup; |
| 881 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 882 | } |
| 883 | |
Willy Tarreau | 0f0393f | 2019-09-24 10:43:03 +0200 | [diff] [blame] | 884 | /* the rest of the code below expects the connection to be ready! */ |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 885 | if (conn->flags & CO_FL_WAIT_XPRT && !done) |
Willy Tarreau | 0f0393f | 2019-09-24 10:43:03 +0200 | [diff] [blame] | 886 | goto wait_more_data; |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 887 | |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 888 | /* Intermediate or complete response received. |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 889 | * Terminate string in b_head(&check->bi) buffer. |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 890 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 891 | if (b_data(&check->bi) < b_size(&check->bi)) |
| 892 | b_head(&check->bi)[b_data(&check->bi)] = '\0'; |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 893 | else { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 894 | b_head(&check->bi)[b_data(&check->bi) - 1] = '\0'; |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 895 | done = 1; /* buffer full, don't wait for more data */ |
| 896 | } |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 897 | |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 898 | /* Run the checks... */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 899 | switch (check->type) { |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 900 | case PR_O2_HTTP_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 901 | if (!done && b_data(&check->bi) < strlen("HTTP/1.0 000\r")) |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 902 | goto wait_more_data; |
| 903 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 904 | /* Check if the server speaks HTTP 1.X */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 905 | if ((b_data(&check->bi) < strlen("HTTP/1.0 000\r")) || |
| 906 | (memcmp(b_head(&check->bi), "HTTP/1.", 7) != 0 || |
| 907 | (*(b_head(&check->bi) + 12) != ' ' && *(b_head(&check->bi) + 12) != '\r')) || |
| 908 | !isdigit((unsigned char) *(b_head(&check->bi) + 9)) || !isdigit((unsigned char) *(b_head(&check->bi) + 10)) || |
| 909 | !isdigit((unsigned char) *(b_head(&check->bi) + 11))) { |
| 910 | cut_crlf(b_head(&check->bi)); |
| 911 | 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] | 912 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 913 | goto out_wakeup; |
| 914 | } |
| 915 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 916 | check->code = str2uic(b_head(&check->bi) + 9); |
| 917 | desc = ltrim(b_head(&check->bi) + 12, ' '); |
Christopher Faulet | c2a89a6 | 2017-10-23 15:54:24 +0200 | [diff] [blame] | 918 | |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 919 | if ((s->proxy->options & PR_O_DISABLE404) && |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 920 | (s->next_state != SRV_ST_STOPPED) && (check->code == 404)) { |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 921 | /* 404 may be accepted as "stopping" only if the server was up */ |
| 922 | cut_crlf(desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 923 | set_server_check_status(check, HCHK_STATUS_L7OKCD, desc); |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 924 | } |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 925 | else if (s->proxy->options2 & PR_O2_EXP_TYPE) { |
| 926 | /* Run content verification check... We know we have at least 13 chars */ |
| 927 | if (!httpchk_expect(s, done)) |
| 928 | goto wait_more_data; |
| 929 | } |
| 930 | /* check the reply : HTTP/1.X 2xx and 3xx are OK */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 931 | 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] | 932 | cut_crlf(desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 933 | set_server_check_status(check, HCHK_STATUS_L7OKD, desc); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 934 | } |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 935 | else { |
| 936 | cut_crlf(desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 937 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 938 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 939 | break; |
| 940 | |
| 941 | case PR_O2_SSL3_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 942 | if (!done && b_data(&check->bi) < 5) |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 943 | goto wait_more_data; |
| 944 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 945 | /* Check for SSLv3 alert or handshake */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 946 | 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] | 947 | set_server_check_status(check, HCHK_STATUS_L6OK, NULL); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 948 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 949 | set_server_check_status(check, HCHK_STATUS_L6RSP, NULL); |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 950 | break; |
| 951 | |
| 952 | case PR_O2_SMTP_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 953 | if (!done && b_data(&check->bi) < strlen("000\r")) |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 954 | goto wait_more_data; |
| 955 | |
Willy Tarreau | 5488a62 | 2019-08-06 16:26:31 +0200 | [diff] [blame] | 956 | /* do not reset when closing, servers don't like this */ |
| 957 | if (conn_ctrl_ready(cs->conn)) |
| 958 | fdtab[cs->conn->handle.fd].linger_risk = 0; |
| 959 | |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 960 | /* Check if the server speaks SMTP */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 961 | if ((b_data(&check->bi) < strlen("000\r")) || |
| 962 | (*(b_head(&check->bi) + 3) != ' ' && *(b_head(&check->bi) + 3) != '\r') || |
| 963 | !isdigit((unsigned char) *b_head(&check->bi)) || !isdigit((unsigned char) *(b_head(&check->bi) + 1)) || |
| 964 | !isdigit((unsigned char) *(b_head(&check->bi) + 2))) { |
| 965 | cut_crlf(b_head(&check->bi)); |
| 966 | 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] | 967 | goto out_wakeup; |
| 968 | } |
| 969 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 970 | check->code = str2uic(b_head(&check->bi)); |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 971 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 972 | desc = ltrim(b_head(&check->bi) + 3, ' '); |
Krzysztof Piotr Oledzki | f7089f5 | 2009-10-10 21:06:49 +0200 | [diff] [blame] | 973 | cut_crlf(desc); |
| 974 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 975 | /* Check for SMTP code 2xx (should be 250) */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 976 | if (*b_head(&check->bi) == '2') |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 977 | set_server_check_status(check, HCHK_STATUS_L7OKD, desc); |
Krzysztof Piotr Oledzki | 213014e | 2009-09-27 15:50:02 +0200 | [diff] [blame] | 978 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 979 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 980 | break; |
| 981 | |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 982 | case PR_O2_LB_AGENT_CHK: { |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 983 | int status = HCHK_STATUS_CHECKED; |
| 984 | const char *hs = NULL; /* health status */ |
| 985 | const char *as = NULL; /* admin status */ |
| 986 | const char *ps = NULL; /* performance status */ |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 987 | const char *cs = NULL; /* maxconn */ |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 988 | const char *err = NULL; /* first error to report */ |
| 989 | const char *wrn = NULL; /* first warning to report */ |
| 990 | char *cmd, *p; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 991 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 992 | /* We're getting an agent check response. The agent could |
| 993 | * have been disabled in the mean time with a long check |
| 994 | * still pending. It is important that we ignore the whole |
| 995 | * response. |
| 996 | */ |
| 997 | if (!(check->server->agent.state & CHK_ST_ENABLED)) |
| 998 | break; |
| 999 | |
| 1000 | /* The agent supports strings made of a single line ended by the |
| 1001 | * first CR ('\r') or LF ('\n'). This line is composed of words |
| 1002 | * delimited by spaces (' '), tabs ('\t'), or commas (','). The |
| 1003 | * line may optionally contained a description of a state change |
| 1004 | * after a sharp ('#'), which is only considered if a health state |
| 1005 | * is announced. |
| 1006 | * |
| 1007 | * Words may be composed of : |
| 1008 | * - a numeric weight suffixed by the percent character ('%'). |
| 1009 | * - a health status among "up", "down", "stopped", and "fail". |
| 1010 | * - an admin status among "ready", "drain", "maint". |
| 1011 | * |
| 1012 | * These words may appear in any order. If multiple words of the |
| 1013 | * same category appear, the last one wins. |
| 1014 | */ |
| 1015 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1016 | p = b_head(&check->bi); |
Willy Tarreau | 9809b78 | 2013-12-11 21:40:11 +0100 | [diff] [blame] | 1017 | while (*p && *p != '\n' && *p != '\r') |
| 1018 | p++; |
| 1019 | |
| 1020 | if (!*p) { |
| 1021 | if (!done) |
| 1022 | goto wait_more_data; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1023 | |
Willy Tarreau | 9809b78 | 2013-12-11 21:40:11 +0100 | [diff] [blame] | 1024 | /* at least inform the admin that the agent is mis-behaving */ |
| 1025 | set_server_check_status(check, check->status, "Ignoring incomplete line from agent"); |
| 1026 | break; |
| 1027 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1028 | |
Willy Tarreau | 9809b78 | 2013-12-11 21:40:11 +0100 | [diff] [blame] | 1029 | *p = 0; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1030 | cmd = b_head(&check->bi); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1031 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1032 | while (*cmd) { |
| 1033 | /* look for next word */ |
| 1034 | if (*cmd == ' ' || *cmd == '\t' || *cmd == ',') { |
| 1035 | cmd++; |
| 1036 | continue; |
| 1037 | } |
Simon Horman | 671b6f0 | 2013-11-25 10:46:39 +0900 | [diff] [blame] | 1038 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1039 | if (*cmd == '#') { |
| 1040 | /* this is the beginning of a health status description, |
| 1041 | * skip the sharp and blanks. |
| 1042 | */ |
| 1043 | cmd++; |
| 1044 | while (*cmd == '\t' || *cmd == ' ') |
| 1045 | cmd++; |
Simon Horman | 671b6f0 | 2013-11-25 10:46:39 +0900 | [diff] [blame] | 1046 | break; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1047 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1048 | |
| 1049 | /* find the end of the word so that we have a null-terminated |
| 1050 | * word between <cmd> and <p>. |
| 1051 | */ |
| 1052 | p = cmd + 1; |
| 1053 | while (*p && *p != '\t' && *p != ' ' && *p != '\n' && *p != ',') |
| 1054 | p++; |
| 1055 | if (*p) |
| 1056 | *p++ = 0; |
| 1057 | |
| 1058 | /* first, health statuses */ |
| 1059 | if (strcasecmp(cmd, "up") == 0) { |
| 1060 | check->health = check->rise + check->fall - 1; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1061 | status = HCHK_STATUS_L7OKD; |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1062 | hs = cmd; |
| 1063 | } |
| 1064 | else if (strcasecmp(cmd, "down") == 0) { |
| 1065 | check->health = 0; |
| 1066 | status = HCHK_STATUS_L7STS; |
| 1067 | hs = cmd; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1068 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1069 | else if (strcasecmp(cmd, "stopped") == 0) { |
| 1070 | check->health = 0; |
| 1071 | status = HCHK_STATUS_L7STS; |
| 1072 | hs = cmd; |
| 1073 | } |
| 1074 | else if (strcasecmp(cmd, "fail") == 0) { |
| 1075 | check->health = 0; |
| 1076 | status = HCHK_STATUS_L7STS; |
| 1077 | hs = cmd; |
| 1078 | } |
| 1079 | /* admin statuses */ |
| 1080 | else if (strcasecmp(cmd, "ready") == 0) { |
| 1081 | as = cmd; |
| 1082 | } |
| 1083 | else if (strcasecmp(cmd, "drain") == 0) { |
| 1084 | as = cmd; |
| 1085 | } |
| 1086 | else if (strcasecmp(cmd, "maint") == 0) { |
| 1087 | as = cmd; |
| 1088 | } |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 1089 | /* try to parse a weight here and keep the last one */ |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1090 | else if (isdigit((unsigned char)*cmd) && strchr(cmd, '%') != NULL) { |
| 1091 | ps = cmd; |
| 1092 | } |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 1093 | /* try to parse a maxconn here */ |
| 1094 | else if (strncasecmp(cmd, "maxconn:", strlen("maxconn:")) == 0) { |
| 1095 | cs = cmd; |
| 1096 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1097 | else { |
| 1098 | /* keep a copy of the first error */ |
| 1099 | if (!err) |
| 1100 | err = cmd; |
| 1101 | } |
| 1102 | /* skip to next word */ |
| 1103 | cmd = p; |
| 1104 | } |
| 1105 | /* here, cmd points either to \0 or to the beginning of a |
| 1106 | * description. Skip possible leading spaces. |
| 1107 | */ |
| 1108 | while (*cmd == ' ' || *cmd == '\n') |
| 1109 | cmd++; |
| 1110 | |
| 1111 | /* First, update the admin status so that we avoid sending other |
| 1112 | * possibly useless warnings and can also update the health if |
| 1113 | * present after going back up. |
| 1114 | */ |
| 1115 | if (as) { |
| 1116 | if (strcasecmp(as, "drain") == 0) |
| 1117 | srv_adm_set_drain(check->server); |
| 1118 | else if (strcasecmp(as, "maint") == 0) |
| 1119 | srv_adm_set_maint(check->server); |
| 1120 | else |
| 1121 | srv_adm_set_ready(check->server); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1122 | } |
| 1123 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1124 | /* now change weights */ |
| 1125 | if (ps) { |
| 1126 | const char *msg; |
| 1127 | |
| 1128 | msg = server_parse_weight_change_request(s, ps); |
| 1129 | if (!wrn || !*wrn) |
| 1130 | wrn = msg; |
| 1131 | } |
| 1132 | |
Nenad Merdanovic | 174dd37 | 2016-04-24 23:10:06 +0200 | [diff] [blame] | 1133 | if (cs) { |
| 1134 | const char *msg; |
| 1135 | |
| 1136 | cs += strlen("maxconn:"); |
| 1137 | |
| 1138 | msg = server_parse_maxconn_change_request(s, cs); |
| 1139 | if (!wrn || !*wrn) |
| 1140 | wrn = msg; |
| 1141 | } |
| 1142 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1143 | /* and finally health status */ |
| 1144 | if (hs) { |
| 1145 | /* We'll report some of the warnings and errors we have |
| 1146 | * here. Down reports are critical, we leave them untouched. |
| 1147 | * Lack of report, or report of 'UP' leaves the room for |
| 1148 | * ERR first, then WARN. |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1149 | */ |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1150 | const char *msg = cmd; |
Willy Tarreau | 83061a8 | 2018-07-13 11:56:34 +0200 | [diff] [blame] | 1151 | struct buffer *t; |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1152 | |
| 1153 | if (!*msg || status == HCHK_STATUS_L7OKD) { |
| 1154 | if (err && *err) |
| 1155 | msg = err; |
| 1156 | else if (wrn && *wrn) |
| 1157 | msg = wrn; |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1158 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1159 | |
| 1160 | t = get_trash_chunk(); |
| 1161 | chunk_printf(t, "via agent : %s%s%s%s", |
| 1162 | hs, *msg ? " (" : "", |
| 1163 | msg, *msg ? ")" : ""); |
| 1164 | |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1165 | set_server_check_status(check, status, t->area); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1166 | } |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1167 | else if (err && *err) { |
| 1168 | /* No status change but we'd like to report something odd. |
| 1169 | * Just report the current state and copy the message. |
| 1170 | */ |
| 1171 | chunk_printf(&trash, "agent reports an error : %s", err); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1172 | set_server_check_status(check, status/*check->status*/, |
| 1173 | trash.area); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1174 | |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1175 | } |
| 1176 | else if (wrn && *wrn) { |
| 1177 | /* No status change but we'd like to report something odd. |
| 1178 | * Just report the current state and copy the message. |
| 1179 | */ |
| 1180 | chunk_printf(&trash, "agent warns : %s", wrn); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 1181 | set_server_check_status(check, status/*check->status*/, |
| 1182 | trash.area); |
Willy Tarreau | 81f5d94 | 2013-12-09 20:51:51 +0100 | [diff] [blame] | 1183 | } |
| 1184 | else |
| 1185 | set_server_check_status(check, status, NULL); |
Simon Horman | a2b9dad | 2013-02-12 10:45:54 +0900 | [diff] [blame] | 1186 | break; |
| 1187 | } |
| 1188 | |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1189 | case PR_O2_PGSQL_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1190 | if (!done && b_data(&check->bi) < 9) |
Rauf Kuliyev | 38b4156 | 2011-01-04 15:14:13 +0100 | [diff] [blame] | 1191 | goto wait_more_data; |
| 1192 | |
Willy Tarreau | 5488a62 | 2019-08-06 16:26:31 +0200 | [diff] [blame] | 1193 | /* do not reset when closing, servers don't like this */ |
| 1194 | if (conn_ctrl_ready(cs->conn)) |
| 1195 | fdtab[cs->conn->handle.fd].linger_risk = 0; |
| 1196 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1197 | if (b_head(&check->bi)[0] == 'R') { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1198 | set_server_check_status(check, HCHK_STATUS_L7OKD, "PostgreSQL server is ok"); |
Rauf Kuliyev | 38b4156 | 2011-01-04 15:14:13 +0100 | [diff] [blame] | 1199 | } |
| 1200 | else { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1201 | if ((b_head(&check->bi)[0] == 'E') && (b_head(&check->bi)[5]!=0) && (b_head(&check->bi)[6]!=0)) |
| 1202 | desc = &b_head(&check->bi)[6]; |
Rauf Kuliyev | 38b4156 | 2011-01-04 15:14:13 +0100 | [diff] [blame] | 1203 | else |
| 1204 | desc = "PostgreSQL unknown error"; |
| 1205 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1206 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Rauf Kuliyev | 38b4156 | 2011-01-04 15:14:13 +0100 | [diff] [blame] | 1207 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1208 | break; |
| 1209 | |
| 1210 | case PR_O2_REDIS_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1211 | if (!done && b_data(&check->bi) < 7) |
Hervé COMMOWICK | ec032d6 | 2011-08-05 16:23:48 +0200 | [diff] [blame] | 1212 | goto wait_more_data; |
| 1213 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1214 | if (strcmp(b_head(&check->bi), "+PONG\r\n") == 0) { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1215 | set_server_check_status(check, HCHK_STATUS_L7OKD, "Redis server is ok"); |
Hervé COMMOWICK | ec032d6 | 2011-08-05 16:23:48 +0200 | [diff] [blame] | 1216 | } |
| 1217 | else { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1218 | set_server_check_status(check, HCHK_STATUS_L7STS, b_head(&check->bi)); |
Hervé COMMOWICK | ec032d6 | 2011-08-05 16:23:48 +0200 | [diff] [blame] | 1219 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1220 | break; |
| 1221 | |
| 1222 | case PR_O2_MYSQL_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1223 | if (!done && b_data(&check->bi) < 5) |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 1224 | goto wait_more_data; |
| 1225 | |
Willy Tarreau | 5488a62 | 2019-08-06 16:26:31 +0200 | [diff] [blame] | 1226 | /* do not reset when closing, servers don't like this */ |
| 1227 | if (conn_ctrl_ready(cs->conn)) |
| 1228 | fdtab[cs->conn->handle.fd].linger_risk = 0; |
| 1229 | |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1230 | if (s->proxy->check_len == 0) { // old mode |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1231 | if (*(b_head(&check->bi) + 4) != '\xff') { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1232 | /* We set the MySQL Version in description for information purpose |
| 1233 | * FIXME : it can be cool to use MySQL Version for other purpose, |
| 1234 | * like mark as down old MySQL server. |
| 1235 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1236 | if (b_data(&check->bi) > 51) { |
| 1237 | desc = ltrim(b_head(&check->bi) + 5, ' '); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1238 | set_server_check_status(check, HCHK_STATUS_L7OKD, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1239 | } |
| 1240 | else { |
| 1241 | if (!done) |
| 1242 | goto wait_more_data; |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1243 | |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1244 | /* it seems we have a OK packet but without a valid length, |
| 1245 | * it must be a protocol error |
| 1246 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1247 | set_server_check_status(check, HCHK_STATUS_L7RSP, b_head(&check->bi)); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1248 | } |
Hervé COMMOWICK | 698ae00 | 2010-01-12 09:25:13 +0100 | [diff] [blame] | 1249 | } |
| 1250 | else { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1251 | /* An error message is attached in the Error packet */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1252 | desc = ltrim(b_head(&check->bi) + 7, ' '); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1253 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1254 | } |
| 1255 | } else { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1256 | unsigned int first_packet_len = ((unsigned int) *b_head(&check->bi)) + |
| 1257 | (((unsigned int) *(b_head(&check->bi) + 1)) << 8) + |
| 1258 | (((unsigned int) *(b_head(&check->bi) + 2)) << 16); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1259 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1260 | if (b_data(&check->bi) == first_packet_len + 4) { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1261 | /* MySQL Error packet always begin with field_count = 0xff */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1262 | if (*(b_head(&check->bi) + 4) != '\xff') { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1263 | /* We have only one MySQL packet and it is a Handshake Initialization packet |
| 1264 | * but we need to have a second packet to know if it is alright |
| 1265 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1266 | if (!done && b_data(&check->bi) < first_packet_len + 5) |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1267 | goto wait_more_data; |
| 1268 | } |
| 1269 | else { |
| 1270 | /* We have only one packet and it is an Error packet, |
| 1271 | * an error message is attached, so we can display it |
| 1272 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1273 | desc = &b_head(&check->bi)[7]; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1274 | //ha_warning("onlyoneERR: %s\n", desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1275 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1276 | } |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1277 | } else if (b_data(&check->bi) > first_packet_len + 4) { |
| 1278 | unsigned int second_packet_len = ((unsigned int) *(b_head(&check->bi) + first_packet_len + 4)) + |
| 1279 | (((unsigned int) *(b_head(&check->bi) + first_packet_len + 5)) << 8) + |
| 1280 | (((unsigned int) *(b_head(&check->bi) + first_packet_len + 6)) << 16); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1281 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1282 | 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] | 1283 | /* We have 2 packets and that's good */ |
| 1284 | /* Check if the second packet is a MySQL Error packet or not */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1285 | if (*(b_head(&check->bi) + first_packet_len + 8) != '\xff') { |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1286 | /* No error packet */ |
| 1287 | /* We set the MySQL Version in description for information purpose */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1288 | desc = &b_head(&check->bi)[5]; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1289 | //ha_warning("2packetOK: %s\n", desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1290 | set_server_check_status(check, HCHK_STATUS_L7OKD, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1291 | } |
| 1292 | else { |
| 1293 | /* An error message is attached in the Error packet |
| 1294 | * so we can display it ! :) |
| 1295 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1296 | desc = &b_head(&check->bi)[first_packet_len+11]; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1297 | //ha_warning("2packetERR: %s\n", desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1298 | set_server_check_status(check, HCHK_STATUS_L7STS, desc); |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1299 | } |
| 1300 | } |
| 1301 | } |
| 1302 | else { |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 1303 | if (!done) |
| 1304 | goto wait_more_data; |
Emeric Brun | 9f0b458 | 2017-10-23 14:39:51 +0200 | [diff] [blame] | 1305 | |
Hervé COMMOWICK | 8776f1b | 2010-10-18 15:58:36 +0200 | [diff] [blame] | 1306 | /* 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] | 1307 | * it must be a protocol error |
| 1308 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1309 | desc = &b_head(&check->bi)[5]; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1310 | //ha_warning("protoerr: %s\n", desc); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1311 | set_server_check_status(check, HCHK_STATUS_L7RSP, desc); |
Hervé COMMOWICK | 698ae00 | 2010-01-12 09:25:13 +0100 | [diff] [blame] | 1312 | } |
| 1313 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1314 | break; |
| 1315 | |
| 1316 | case PR_O2_LDAP_CHK: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1317 | if (!done && b_data(&check->bi) < 14) |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1318 | goto wait_more_data; |
| 1319 | |
| 1320 | /* Check if the server speaks LDAP (ASN.1/BER) |
| 1321 | * http://en.wikipedia.org/wiki/Basic_Encoding_Rules |
| 1322 | * http://tools.ietf.org/html/rfc4511 |
| 1323 | */ |
| 1324 | |
| 1325 | /* http://tools.ietf.org/html/rfc4511#section-4.1.1 |
| 1326 | * LDAPMessage: 0x30: SEQUENCE |
| 1327 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1328 | if ((b_data(&check->bi) < 14) || (*(b_head(&check->bi)) != '\x30')) { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1329 | set_server_check_status(check, HCHK_STATUS_L7RSP, "Not LDAPv3 protocol"); |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1330 | } |
| 1331 | else { |
| 1332 | /* size of LDAPMessage */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1333 | 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] | 1334 | |
| 1335 | /* http://tools.ietf.org/html/rfc4511#section-4.2.2 |
| 1336 | * messageID: 0x02 0x01 0x01: INTEGER 1 |
| 1337 | * protocolOp: 0x61: bindResponse |
| 1338 | */ |
| 1339 | if ((msglen > 2) || |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1340 | (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] | 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 | goto out_wakeup; |
| 1343 | } |
| 1344 | |
| 1345 | /* size of bindResponse */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1346 | 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] | 1347 | |
| 1348 | /* http://tools.ietf.org/html/rfc4511#section-4.1.9 |
| 1349 | * ldapResult: 0x0a 0x01: ENUMERATION |
| 1350 | */ |
| 1351 | if ((msglen > 4) || |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1352 | (memcmp(b_head(&check->bi) + 7 + msglen, "\x0a\x01", 2) != 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 | /* http://tools.ietf.org/html/rfc4511#section-4.1.9 |
| 1358 | * resultCode |
| 1359 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1360 | check->code = *(b_head(&check->bi) + msglen + 9); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1361 | if (check->code) { |
| 1362 | 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] | 1363 | } else { |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 1364 | set_server_check_status(check, HCHK_STATUS_L7OKD, "Success"); |
Gabor Lekeny | b4c81e4 | 2010-09-29 18:17:05 +0200 | [diff] [blame] | 1365 | } |
| 1366 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1367 | break; |
| 1368 | |
Christopher Faulet | ba7bc16 | 2016-11-07 21:07:38 +0100 | [diff] [blame] | 1369 | case PR_O2_SPOP_CHK: { |
| 1370 | unsigned int framesz; |
| 1371 | char err[HCHK_DESC_LEN]; |
| 1372 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1373 | if (!done && b_data(&check->bi) < 4) |
Christopher Faulet | ba7bc16 | 2016-11-07 21:07:38 +0100 | [diff] [blame] | 1374 | goto wait_more_data; |
| 1375 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1376 | memcpy(&framesz, b_head(&check->bi), 4); |
Christopher Faulet | ba7bc16 | 2016-11-07 21:07:38 +0100 | [diff] [blame] | 1377 | framesz = ntohl(framesz); |
| 1378 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1379 | if (!done && b_data(&check->bi) < (4+framesz)) |
Christopher Faulet | ba7bc16 | 2016-11-07 21:07:38 +0100 | [diff] [blame] | 1380 | goto wait_more_data; |
| 1381 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1382 | 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] | 1383 | set_server_check_status(check, HCHK_STATUS_L7OKD, "SPOA server is ok"); |
| 1384 | else |
| 1385 | set_server_check_status(check, HCHK_STATUS_L7STS, err); |
| 1386 | break; |
| 1387 | } |
| 1388 | |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1389 | default: |
Willy Tarreau | 4c1a2b3 | 2019-09-05 18:43:22 +0200 | [diff] [blame] | 1390 | /* good connection is enough for pure TCP check */ |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 1391 | if (!(conn->flags & CO_FL_WAIT_XPRT) && !check->type) { |
Christopher Faulet | f61f33a | 2020-03-27 18:55:49 +0100 | [diff] [blame] | 1392 | if (check->use_ssl == 1) |
Willy Tarreau | 4c1a2b3 | 2019-09-05 18:43:22 +0200 | [diff] [blame] | 1393 | set_server_check_status(check, HCHK_STATUS_L6OK, NULL); |
| 1394 | else |
| 1395 | set_server_check_status(check, HCHK_STATUS_L4OK, NULL); |
| 1396 | } |
Willy Tarreau | 1620ec3 | 2011-08-06 17:05:02 +0200 | [diff] [blame] | 1397 | break; |
| 1398 | } /* switch */ |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 1399 | |
Willy Tarreau | c7dd71a | 2007-11-30 08:33:21 +0100 | [diff] [blame] | 1400 | out_wakeup: |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 1401 | /* collect possible new errors */ |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 1402 | if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 1403 | chk_report_conn_err(check, 0, 0); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1404 | |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 1405 | /* Reset the check buffer... */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1406 | *b_head(&check->bi) = '\0'; |
| 1407 | b_reset(&check->bi); |
Nick Chalk | 57b1bf7 | 2010-03-16 15:50:46 +0000 | [diff] [blame] | 1408 | |
Steven Davidovitz | 544d481 | 2017-03-08 11:06:20 -0800 | [diff] [blame] | 1409 | /* Close the connection... We still attempt to nicely close if, |
| 1410 | * for instance, SSL needs to send a "close notify." Later, we perform |
| 1411 | * a hard close and reset the connection if some data are pending, |
| 1412 | * otherwise we end up with many TIME_WAITs and eat all the source port |
| 1413 | * range quickly. To avoid sending RSTs all the time, we first try to |
| 1414 | * drain pending data. |
Willy Tarreau | fd29cc5 | 2012-11-23 09:18:20 +0100 | [diff] [blame] | 1415 | */ |
Olivier Houchard | 6c7e96a | 2019-07-02 16:35:18 +0200 | [diff] [blame] | 1416 | /* Call cs_shutr() first, to add the CO_FL_SOCK_RD_SH flag on the |
| 1417 | * connection, to make sure cs_shutw() will not lead to a shutdown() |
| 1418 | * that would provoke TIME_WAITs. |
| 1419 | */ |
| 1420 | cs_shutr(cs, CS_SHR_DRAIN); |
Willy Tarreau | ecdb3fe | 2017-10-05 15:25:48 +0200 | [diff] [blame] | 1421 | cs_shutw(cs, CS_SHW_NORMAL); |
Willy Tarreau | 2b57cb8 | 2013-06-10 19:56:38 +0200 | [diff] [blame] | 1422 | |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 1423 | /* OK, let's not stay here forever */ |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 1424 | if (check->result == CHK_RES_FAILED) |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 1425 | conn->flags |= CO_FL_ERROR; |
| 1426 | |
Willy Tarreau | fdccded | 2008-08-29 18:19:04 +0200 | [diff] [blame] | 1427 | task_wakeup(t, TASK_WOKEN_IO); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 1428 | out: |
Willy Tarreau | 3267d36 | 2012-08-17 23:53:56 +0200 | [diff] [blame] | 1429 | return; |
Willy Tarreau | 0393818 | 2010-03-17 21:52:07 +0100 | [diff] [blame] | 1430 | |
| 1431 | wait_more_data: |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 1432 | cs->conn->mux->subscribe(cs, SUB_RETRY_RECV, &check->wait_list); |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 1433 | goto out; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1434 | } |
| 1435 | |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1436 | /* |
| 1437 | * This function is used only for server health-checks. It handles connection |
| 1438 | * status updates including errors. If necessary, it wakes the check task up. |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1439 | * It returns 0 on normal cases, <0 if at least one close() has happened on the |
| 1440 | * connection (eg: reconnect). |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1441 | */ |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1442 | static int wake_srv_chk(struct conn_stream *cs) |
Willy Tarreau | 20bea42 | 2012-07-06 12:00:49 +0200 | [diff] [blame] | 1443 | { |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1444 | struct connection *conn = cs->conn; |
| 1445 | struct check *check = cs->data; |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 1446 | struct email_alertq *q = container_of(check, typeof(*q), check); |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1447 | int ret = 0; |
Willy Tarreau | 20bea42 | 2012-07-06 12:00:49 +0200 | [diff] [blame] | 1448 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 1449 | if (check->server) |
| 1450 | HA_SPIN_LOCK(SERVER_LOCK, &check->server->lock); |
| 1451 | else |
| 1452 | HA_SPIN_LOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Emeric Brun | f6ba17d | 2017-11-02 14:35:27 +0100 | [diff] [blame] | 1453 | |
Willy Tarreau | c09572f | 2017-10-04 11:58:22 +0200 | [diff] [blame] | 1454 | /* we may have to make progress on the TCP checks */ |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1455 | if (check->type == PR_O2_TCPCHK_CHK) { |
| 1456 | ret = tcpcheck_main(check); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1457 | cs = check->cs; |
Willy Tarreau | 543abd4 | 2018-09-20 11:25:12 +0200 | [diff] [blame] | 1458 | conn = cs->conn; |
Willy Tarreau | c594039 | 2019-09-05 17:38:40 +0200 | [diff] [blame] | 1459 | } else { |
| 1460 | if (!(check->wait_list.events & SUB_RETRY_SEND)) |
| 1461 | __event_srv_chk_w(cs); |
| 1462 | if (!(check->wait_list.events & SUB_RETRY_RECV)) |
| 1463 | __event_srv_chk_r(cs); |
| 1464 | } |
Willy Tarreau | c09572f | 2017-10-04 11:58:22 +0200 | [diff] [blame] | 1465 | |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 1466 | if (unlikely(conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR)) { |
Willy Tarreau | 02b0f58 | 2013-12-03 15:42:33 +0100 | [diff] [blame] | 1467 | /* We may get error reports bypassing the I/O handlers, typically |
| 1468 | * the case when sending a pure TCP check which fails, then the I/O |
| 1469 | * handlers above are not called. This is completely handled by the |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 1470 | * main processing task so let's simply wake it up. If we get here, |
| 1471 | * we expect errno to still be valid. |
| 1472 | */ |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 1473 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | 2d351b6 | 2013-12-05 02:36:25 +0100 | [diff] [blame] | 1474 | task_wakeup(check->task, TASK_WOKEN_IO); |
| 1475 | } |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 1476 | else if (!(conn->flags & CO_FL_WAIT_XPRT) && !check->type) { |
Willy Tarreau | 3be293f | 2014-02-05 18:31:24 +0100 | [diff] [blame] | 1477 | /* we may get here if only a connection probe was required : we |
| 1478 | * don't have any data to send nor anything expected in response, |
| 1479 | * so the completion of the connection establishment is enough. |
| 1480 | */ |
| 1481 | task_wakeup(check->task, TASK_WOKEN_IO); |
| 1482 | } |
Willy Tarreau | 2d351b6 | 2013-12-05 02:36:25 +0100 | [diff] [blame] | 1483 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 1484 | if (check->result != CHK_RES_UNKNOWN) { |
Christopher Faulet | 774c486 | 2019-01-21 14:15:50 +0100 | [diff] [blame] | 1485 | /* Check complete or aborted. If connection not yet closed do it |
| 1486 | * now and wake the check task up to be sure the result is |
| 1487 | * handled ASAP. */ |
Willy Tarreau | d85c485 | 2015-03-13 00:40:28 +0100 | [diff] [blame] | 1488 | conn_sock_drain(conn); |
Willy Tarreau | a553ae9 | 2017-10-05 18:52:17 +0200 | [diff] [blame] | 1489 | cs_close(cs); |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1490 | ret = -1; |
Olivier Houchard | f494957 | 2019-07-02 17:42:22 +0200 | [diff] [blame] | 1491 | /* We may have been scheduled to run, and the |
| 1492 | * I/O handler expects to have a cs, so remove |
| 1493 | * the tasklet |
| 1494 | */ |
| 1495 | tasklet_remove_from_tasklet_list(check->wait_list.tasklet); |
Christopher Faulet | 774c486 | 2019-01-21 14:15:50 +0100 | [diff] [blame] | 1496 | task_wakeup(check->task, TASK_WOKEN_IO); |
Willy Tarreau | 2d351b6 | 2013-12-05 02:36:25 +0100 | [diff] [blame] | 1497 | } |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1498 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 1499 | if (check->server) |
| 1500 | HA_SPIN_UNLOCK(SERVER_LOCK, &check->server->lock); |
| 1501 | else |
| 1502 | HA_SPIN_UNLOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Emeric Brun | f6ba17d | 2017-11-02 14:35:27 +0100 | [diff] [blame] | 1503 | |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 1504 | /* if a connection got replaced, we must absolutely prevent the connection |
| 1505 | * handler from touching its fd, and perform the FD polling updates ourselves |
| 1506 | */ |
| 1507 | if (ret < 0) |
| 1508 | conn_cond_update_polling(conn); |
| 1509 | |
| 1510 | return ret; |
Willy Tarreau | 20bea42 | 2012-07-06 12:00:49 +0200 | [diff] [blame] | 1511 | } |
| 1512 | |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1513 | struct data_cb check_conn_cb = { |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1514 | .wake = wake_srv_chk, |
Willy Tarreau | 8e0bb0a | 2016-11-24 16:58:12 +0100 | [diff] [blame] | 1515 | .name = "CHCK", |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 1516 | }; |
| 1517 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1518 | /* |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1519 | * updates the server's weight during a warmup stage. Once the final weight is |
| 1520 | * reached, the task automatically stops. Note that any server status change |
| 1521 | * must have updated s->last_change accordingly. |
| 1522 | */ |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 1523 | 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] | 1524 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 1525 | struct server *s = context; |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1526 | |
| 1527 | /* by default, plan on stopping the task */ |
| 1528 | t->expire = TICK_ETERNITY; |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1529 | if ((s->next_admin & SRV_ADMF_MAINT) || |
| 1530 | (s->next_state != SRV_ST_STARTING)) |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1531 | return t; |
| 1532 | |
Willy Tarreau | 4fc49a9 | 2019-05-05 06:54:22 +0200 | [diff] [blame] | 1533 | HA_SPIN_LOCK(SERVER_LOCK, &s->lock); |
| 1534 | |
Willy Tarreau | 892337c | 2014-05-13 23:41:20 +0200 | [diff] [blame] | 1535 | /* recalculate the weights and update the state */ |
Willy Tarreau | 3ff577e | 2018-08-02 11:48:52 +0200 | [diff] [blame] | 1536 | server_recalc_eweight(s, 1); |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1537 | |
| 1538 | /* probably that we can refill this server with a bit more connections */ |
Willy Tarreau | 4aac7db | 2014-05-16 11:48:10 +0200 | [diff] [blame] | 1539 | pendconn_grab_from_px(s); |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1540 | |
Willy Tarreau | 4fc49a9 | 2019-05-05 06:54:22 +0200 | [diff] [blame] | 1541 | HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock); |
| 1542 | |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1543 | /* get back there in 1 second or 1/20th of the slowstart interval, |
| 1544 | * whichever is greater, resulting in small 5% steps. |
| 1545 | */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 1546 | if (s->next_state == SRV_ST_STARTING) |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1547 | t->expire = tick_add(now_ms, MS_TO_TICKS(MAX(1000, s->slowstart / 20))); |
| 1548 | return t; |
| 1549 | } |
| 1550 | |
Willy Tarreau | 894c642 | 2017-10-04 15:58:52 +0200 | [diff] [blame] | 1551 | /* returns the first NON-COMMENT tcp-check rule from list <list> or NULL if |
| 1552 | * none was found. |
| 1553 | */ |
| 1554 | static struct tcpcheck_rule *get_first_tcpcheck_rule(struct list *list) |
| 1555 | { |
| 1556 | struct tcpcheck_rule *r; |
| 1557 | |
| 1558 | list_for_each_entry(r, list, list) { |
| 1559 | if (r->action != TCPCHK_ACT_COMMENT) |
| 1560 | return r; |
| 1561 | } |
| 1562 | return NULL; |
| 1563 | } |
| 1564 | |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 1565 | /* returns the NON-COMMENT tcp-check rule from list <list> following <start> or |
| 1566 | * NULL if non was found. If <start> is NULL, it relies on |
| 1567 | * get_first_tcpcheck_rule(). |
| 1568 | */ |
| 1569 | static struct tcpcheck_rule *get_next_tcpcheck_rule(struct list *list, struct tcpcheck_rule *start) |
| 1570 | { |
| 1571 | struct tcpcheck_rule *r; |
| 1572 | |
| 1573 | if (!start) |
| 1574 | return get_first_tcpcheck_rule(list); |
| 1575 | |
| 1576 | r = LIST_NEXT(&start->list, typeof(r), list); |
| 1577 | list_for_each_entry_from(r, list, list) { |
| 1578 | if (r->action != TCPCHK_ACT_COMMENT) |
| 1579 | return r; |
| 1580 | } |
| 1581 | return NULL; |
| 1582 | } |
| 1583 | |
Willy Tarreau | 2e99390 | 2011-10-31 11:53:20 +0100 | [diff] [blame] | 1584 | /* |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1585 | * establish a server health-check that makes use of a connection. |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1586 | * |
| 1587 | * It can return one of : |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1588 | * - SF_ERR_NONE if everything's OK and tcpcheck_main() was not called |
| 1589 | * - SF_ERR_UP if if everything's OK and tcpcheck_main() was called |
| 1590 | * - SF_ERR_SRVTO if there are no more servers |
| 1591 | * - SF_ERR_SRVCL if the connection was refused by the server |
| 1592 | * - SF_ERR_PRXCOND if the connection has been limited by the proxy (maxconn) |
| 1593 | * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...) |
| 1594 | * - SF_ERR_INTERNAL for any other purely internal errors |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 1595 | * - 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] | 1596 | * 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] | 1597 | * Note that we try to prevent the network stack from sending the ACK during the |
| 1598 | * connect() when a pure TCP check is used (without PROXY protocol). |
| 1599 | */ |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1600 | static int connect_conn_chk(struct task *t) |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1601 | { |
| 1602 | struct check *check = t->context; |
| 1603 | struct server *s = check->server; |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1604 | struct conn_stream *cs = check->cs; |
| 1605 | struct connection *conn = cs_conn(cs); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1606 | struct protocol *proto; |
| 1607 | int ret; |
Olivier Houchard | fdcb007 | 2019-05-06 18:32:29 +0200 | [diff] [blame] | 1608 | int connflags = 0; |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1609 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 1610 | /* we cannot have a connection here */ |
| 1611 | if (conn) |
| 1612 | return SF_ERR_INTERNAL; |
| 1613 | |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1614 | /* prepare the check buffer. |
| 1615 | * This should not be used if check is the secondary agent check |
| 1616 | * of a server as s->proxy->check_req will relate to the |
| 1617 | * configuration of the primary check. Similarly, tcp-check uses |
| 1618 | * its own strings. |
| 1619 | */ |
| 1620 | 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] | 1621 | b_putblk(&check->bo, s->proxy->check_req, s->proxy->check_len); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1622 | |
| 1623 | /* we want to check if this host replies to HTTP or SSLv3 requests |
| 1624 | * so we'll send the request, and won't wake the checker up now. |
| 1625 | */ |
| 1626 | if ((check->type) == PR_O2_SSL3_CHK) { |
| 1627 | /* SSL requires that we put Unix time in the request */ |
| 1628 | int gmt_time = htonl(date.tv_sec); |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1629 | memcpy(b_head(&check->bo) + 11, &gmt_time, 4); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1630 | } |
| 1631 | else if ((check->type) == PR_O2_HTTP_CHK) { |
Cyril Bonté | 32602d2 | 2015-01-30 00:07:07 +0100 | [diff] [blame] | 1632 | /* prevent HTTP keep-alive when "http-check expect" is used */ |
| 1633 | if (s->proxy->options2 & PR_O2_EXP_TYPE) |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1634 | b_putist(&check->bo, ist("Connection: close\r\n")); |
Christopher Faulet | 8acb128 | 2020-04-09 08:44:06 +0200 | [diff] [blame] | 1635 | |
| 1636 | /* If there is a body, add its content-length */ |
| 1637 | if (s->proxy->check_body_len) |
| 1638 | chunk_appendf(&check->bo, "Content-Length: %s\r\n", ultoa(s->proxy->check_body_len)); |
| 1639 | |
| 1640 | /* Add configured headers */ |
| 1641 | if (s->proxy->check_hdrs) |
| 1642 | b_putblk(&check->bo, s->proxy->check_hdrs, s->proxy->check_hdrs_len); |
| 1643 | |
| 1644 | /* Add send-state header */ |
| 1645 | if (s->proxy->options2 & PR_O2_CHK_SNDST) |
| 1646 | b_putblk(&check->bo, trash.area, |
| 1647 | httpchk_build_status_header(s, trash.area, trash.size)); |
| 1648 | |
| 1649 | /* end-of-header */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1650 | b_putist(&check->bo, ist("\r\n")); |
Christopher Faulet | 8acb128 | 2020-04-09 08:44:06 +0200 | [diff] [blame] | 1651 | |
| 1652 | /* Add the body */ |
| 1653 | if (s->proxy->check_body) |
| 1654 | b_putblk(&check->bo, s->proxy->check_body, s->proxy->check_body_len); |
| 1655 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1656 | *b_tail(&check->bo) = '\0'; /* to make gdb output easier to read */ |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1657 | } |
| 1658 | } |
| 1659 | |
James Brown | 55f9ff1 | 2015-10-21 18:19:05 -0700 | [diff] [blame] | 1660 | if ((check->type & PR_O2_LB_AGENT_CHK) && check->send_string_len) { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 1661 | b_putblk(&check->bo, check->send_string, check->send_string_len); |
James Brown | 55f9ff1 | 2015-10-21 18:19:05 -0700 | [diff] [blame] | 1662 | } |
| 1663 | |
Willy Tarreau | f411cce | 2017-10-04 16:21:19 +0200 | [diff] [blame] | 1664 | /* for tcp-checks, the initial connection setup is handled separately as |
| 1665 | * it may be sent to a specific port and not to the server's. |
| 1666 | */ |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 1667 | if (check->type == PR_O2_TCPCHK_CHK) { |
| 1668 | /* tcpcheck initialisation */ |
| 1669 | check->current_step = check->last_started_step = NULL; |
Willy Tarreau | f411cce | 2017-10-04 16:21:19 +0200 | [diff] [blame] | 1670 | tcpcheck_main(check); |
| 1671 | return SF_ERR_UP; |
| 1672 | } |
| 1673 | |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1674 | /* prepare a new connection */ |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1675 | cs = check->cs = cs_new(NULL); |
| 1676 | if (!check->cs) |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 1677 | return SF_ERR_RESOURCE; |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 1678 | conn = cs->conn; |
Olivier Houchard | 26e1a8f | 2018-09-12 15:15:12 +0200 | [diff] [blame] | 1679 | /* Maybe there were an older connection we were waiting on */ |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 1680 | check->wait_list.events = 0; |
Olivier Houchard | ff1e9f3 | 2019-09-20 17:18:35 +0200 | [diff] [blame] | 1681 | tasklet_set_tid(check->wait_list.tasklet, tid); |
| 1682 | |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1683 | |
Willy Tarreau | ca79f59 | 2019-07-17 19:04:47 +0200 | [diff] [blame] | 1684 | if (!sockaddr_alloc(&conn->dst)) |
| 1685 | return SF_ERR_RESOURCE; |
| 1686 | |
Simon Horman | 41f5876 | 2015-01-30 11:22:56 +0900 | [diff] [blame] | 1687 | if (is_addr(&check->addr)) { |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1688 | /* we'll connect to the check addr specified on the server */ |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1689 | *conn->dst = check->addr; |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1690 | } |
| 1691 | else { |
| 1692 | /* we'll connect to the addr on the server */ |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1693 | *conn->dst = s->addr; |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1694 | } |
| 1695 | |
Alexander Liu | 2a54bb7 | 2019-05-22 19:44:48 +0800 | [diff] [blame] | 1696 | if (s->check.via_socks4 && (s->flags & SRV_F_SOCKS4_PROXY)) { |
| 1697 | conn->send_proxy_ofs = 1; |
| 1698 | conn->flags |= CO_FL_SOCKS4; |
| 1699 | } |
| 1700 | |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1701 | proto = protocol_by_family(conn->dst->ss_family); |
Olivier Houchard | 6377a00 | 2017-12-01 22:04:05 +0100 | [diff] [blame] | 1702 | conn->target = &s->obj_type; |
| 1703 | |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1704 | 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] | 1705 | int i = 0; |
| 1706 | |
| 1707 | i = srv_check_healthcheck_port(check); |
Olivier Houchard | 6377a00 | 2017-12-01 22:04:05 +0100 | [diff] [blame] | 1708 | if (i == 0) |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 1709 | return SF_ERR_CHK_PORT; |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 1710 | |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 1711 | set_host_port(conn->dst, i); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1712 | } |
| 1713 | |
Thierry FOURNIER | bb2ae64 | 2015-01-14 11:31:49 +0100 | [diff] [blame] | 1714 | /* no client address */ |
Thierry FOURNIER | bb2ae64 | 2015-01-14 11:31:49 +0100 | [diff] [blame] | 1715 | |
Willy Tarreau | be37315 | 2018-09-06 11:45:30 +0200 | [diff] [blame] | 1716 | conn_prepare(conn, proto, check->xprt); |
Olivier Houchard | f67be93 | 2019-01-29 15:47:43 +0100 | [diff] [blame] | 1717 | if (conn_install_mux(conn, &mux_pt_ops, cs, s->proxy, NULL) < 0) |
| 1718 | return SF_ERR_RESOURCE; |
Willy Tarreau | be37315 | 2018-09-06 11:45:30 +0200 | [diff] [blame] | 1719 | cs_attach(cs, check, &check_conn_cb); |
| 1720 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 1721 | /* only plain tcp check supports quick ACK */ |
| 1722 | connflags |= (check->type ? CONNECT_HAS_DATA : CONNECT_DELACK_ALWAYS); |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1723 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1724 | ret = SF_ERR_INTERNAL; |
Olivier Houchard | b68fda4 | 2017-08-04 18:39:01 +0200 | [diff] [blame] | 1725 | if (proto && proto->connect) |
Olivier Houchard | fdcb007 | 2019-05-06 18:32:29 +0200 | [diff] [blame] | 1726 | ret = proto->connect(conn, connflags); |
Willy Tarreau | 16257f6 | 2017-11-02 15:45:00 +0100 | [diff] [blame] | 1727 | |
Willy Tarreau | 16257f6 | 2017-11-02 15:45:00 +0100 | [diff] [blame] | 1728 | |
Olivier Houchard | 9130a96 | 2017-10-17 17:33:43 +0200 | [diff] [blame] | 1729 | #ifdef USE_OPENSSL |
Olivier Houchard | a48437b | 2019-01-29 16:37:52 +0100 | [diff] [blame] | 1730 | if (ret == SF_ERR_NONE) { |
| 1731 | if (s->check.sni) |
| 1732 | ssl_sock_set_servername(conn, s->check.sni); |
| 1733 | if (s->check.alpn_str) |
| 1734 | ssl_sock_set_alpn(conn, (unsigned char *)s->check.alpn_str, |
| 1735 | s->check.alpn_len); |
| 1736 | } |
Olivier Houchard | 9130a96 | 2017-10-17 17:33:43 +0200 | [diff] [blame] | 1737 | #endif |
Willy Tarreau | f494977 | 2017-05-06 08:45:28 +0200 | [diff] [blame] | 1738 | if (s->check.send_proxy && !(check->state & CHK_ST_AGENT)) { |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1739 | conn->send_proxy_ofs = 1; |
| 1740 | conn->flags |= CO_FL_SEND_PROXY; |
Olivier Houchard | 37d7897 | 2019-12-30 15:13:42 +0100 | [diff] [blame] | 1741 | } |
| 1742 | if (conn->flags & (CO_FL_SEND_PROXY | CO_FL_SOCKS4) && |
| 1743 | conn_ctrl_ready(conn)) { |
Olivier Houchard | fe50bfb | 2019-05-27 12:09:19 +0200 | [diff] [blame] | 1744 | if (xprt_add_hs(conn) < 0) |
| 1745 | ret = SF_ERR_RESOURCE; |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 1746 | } |
| 1747 | |
| 1748 | return ret; |
| 1749 | } |
| 1750 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1751 | static struct list pid_list = LIST_HEAD_INIT(pid_list); |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1752 | static struct pool_head *pool_head_pid_list; |
Willy Tarreau | 86abe44 | 2018-11-25 20:12:18 +0100 | [diff] [blame] | 1753 | __decl_spinlock(pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1754 | |
| 1755 | void block_sigchld(void) |
| 1756 | { |
| 1757 | sigset_t set; |
| 1758 | sigemptyset(&set); |
| 1759 | sigaddset(&set, SIGCHLD); |
William Lallemand | 6e1796e | 2018-06-07 11:23:40 +0200 | [diff] [blame] | 1760 | assert(ha_sigmask(SIG_BLOCK, &set, NULL) == 0); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1761 | } |
| 1762 | |
| 1763 | void unblock_sigchld(void) |
| 1764 | { |
| 1765 | sigset_t set; |
| 1766 | sigemptyset(&set); |
Willy Tarreau | ebc9244 | 2016-06-21 17:29:46 +0200 | [diff] [blame] | 1767 | sigaddset(&set, SIGCHLD); |
William Lallemand | 6e1796e | 2018-06-07 11:23:40 +0200 | [diff] [blame] | 1768 | assert(ha_sigmask(SIG_UNBLOCK, &set, NULL) == 0); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1769 | } |
| 1770 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1771 | static struct pid_list *pid_list_add(pid_t pid, struct task *t) |
| 1772 | { |
| 1773 | struct pid_list *elem; |
| 1774 | struct check *check = t->context; |
| 1775 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1776 | elem = pool_alloc(pool_head_pid_list); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1777 | if (!elem) |
| 1778 | return NULL; |
| 1779 | elem->pid = pid; |
| 1780 | elem->t = t; |
| 1781 | elem->exited = 0; |
| 1782 | check->curpid = elem; |
| 1783 | LIST_INIT(&elem->list); |
Christopher Faulet | cfda847 | 2017-10-20 15:40:23 +0200 | [diff] [blame] | 1784 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1785 | HA_SPIN_LOCK(PID_LIST_LOCK, &pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1786 | LIST_ADD(&pid_list, &elem->list); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1787 | HA_SPIN_UNLOCK(PID_LIST_LOCK, &pid_list_lock); |
Christopher Faulet | cfda847 | 2017-10-20 15:40:23 +0200 | [diff] [blame] | 1788 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1789 | return elem; |
| 1790 | } |
| 1791 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1792 | static void pid_list_del(struct pid_list *elem) |
| 1793 | { |
| 1794 | struct check *check; |
| 1795 | |
| 1796 | if (!elem) |
| 1797 | return; |
| 1798 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1799 | HA_SPIN_LOCK(PID_LIST_LOCK, &pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1800 | LIST_DEL(&elem->list); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1801 | HA_SPIN_UNLOCK(PID_LIST_LOCK, &pid_list_lock); |
Christopher Faulet | cfda847 | 2017-10-20 15:40:23 +0200 | [diff] [blame] | 1802 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1803 | if (!elem->exited) |
| 1804 | kill(elem->pid, SIGTERM); |
| 1805 | |
| 1806 | check = elem->t->context; |
| 1807 | check->curpid = NULL; |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1808 | pool_free(pool_head_pid_list, elem); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1809 | } |
| 1810 | |
| 1811 | /* Called from inside SIGCHLD handler, SIGCHLD is blocked */ |
| 1812 | static void pid_list_expire(pid_t pid, int status) |
| 1813 | { |
| 1814 | struct pid_list *elem; |
| 1815 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1816 | HA_SPIN_LOCK(PID_LIST_LOCK, &pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1817 | list_for_each_entry(elem, &pid_list, list) { |
| 1818 | if (elem->pid == pid) { |
| 1819 | elem->t->expire = now_ms; |
| 1820 | elem->status = status; |
| 1821 | elem->exited = 1; |
Cyril Bonté | 9dbcfab | 2014-08-07 01:55:39 +0200 | [diff] [blame] | 1822 | task_wakeup(elem->t, TASK_WOKEN_IO); |
Christopher Faulet | cfda847 | 2017-10-20 15:40:23 +0200 | [diff] [blame] | 1823 | break; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1824 | } |
| 1825 | } |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 1826 | HA_SPIN_UNLOCK(PID_LIST_LOCK, &pid_list_lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1827 | } |
| 1828 | |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 1829 | static void sigchld_handler(struct sig_handler *sh) |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1830 | { |
| 1831 | pid_t pid; |
| 1832 | int status; |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 1833 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1834 | while ((pid = waitpid(0, &status, WNOHANG)) > 0) |
| 1835 | pid_list_expire(pid, status); |
| 1836 | } |
| 1837 | |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 1838 | static int init_pid_list(void) |
| 1839 | { |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1840 | if (pool_head_pid_list != NULL) |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1841 | /* Nothing to do */ |
| 1842 | return 0; |
| 1843 | |
Willy Tarreau | 48d6bf2 | 2016-06-21 16:27:34 +0200 | [diff] [blame] | 1844 | if (!signal_register_fct(SIGCHLD, sigchld_handler, SIGCHLD)) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1845 | ha_alert("Failed to set signal handler for external health checks: %s. Aborting.\n", |
| 1846 | strerror(errno)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1847 | return 1; |
| 1848 | } |
| 1849 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 1850 | pool_head_pid_list = create_pool("pid_list", sizeof(struct pid_list), MEM_F_SHARED); |
| 1851 | if (pool_head_pid_list == NULL) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1852 | ha_alert("Failed to allocate memory pool for external health checks: %s. Aborting.\n", |
| 1853 | strerror(errno)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1854 | return 1; |
| 1855 | } |
| 1856 | |
| 1857 | return 0; |
| 1858 | } |
| 1859 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1860 | /* helper macro to set an environment variable and jump to a specific label on failure. */ |
| 1861 | #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] | 1862 | |
| 1863 | /* |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1864 | * helper function to allocate enough memory to store an environment variable. |
| 1865 | * It will also check that the environment variable is updatable, and silently |
| 1866 | * fail if not. |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1867 | */ |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1868 | static int extchk_setenv(struct check *check, int idx, const char *value) |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1869 | { |
| 1870 | int len, ret; |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1871 | char *envname; |
| 1872 | int vmaxlen; |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1873 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1874 | if (idx < 0 || idx >= EXTCHK_SIZE) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1875 | ha_alert("Illegal environment variable index %d. Aborting.\n", idx); |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1876 | return 1; |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1877 | } |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1878 | |
| 1879 | envname = extcheck_envs[idx].name; |
| 1880 | vmaxlen = extcheck_envs[idx].vmaxlen; |
| 1881 | |
| 1882 | /* Check if the environment variable is already set, and silently reject |
| 1883 | * the update if this one is not updatable. */ |
| 1884 | if ((vmaxlen == EXTCHK_SIZE_EVAL_INIT) && (check->envp[idx])) |
| 1885 | return 0; |
| 1886 | |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1887 | /* Instead of sending NOT_USED, sending an empty value is preferable */ |
| 1888 | if (strcmp(value, "NOT_USED") == 0) { |
| 1889 | value = ""; |
| 1890 | } |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1891 | |
| 1892 | len = strlen(envname) + 1; |
| 1893 | if (vmaxlen == EXTCHK_SIZE_EVAL_INIT) |
| 1894 | len += strlen(value); |
| 1895 | else |
| 1896 | len += vmaxlen; |
| 1897 | |
| 1898 | if (!check->envp[idx]) |
| 1899 | check->envp[idx] = malloc(len + 1); |
| 1900 | |
| 1901 | if (!check->envp[idx]) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1902 | 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] | 1903 | return 1; |
| 1904 | } |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1905 | ret = snprintf(check->envp[idx], len + 1, "%s=%s", envname, value); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1906 | if (ret < 0) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1907 | 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] | 1908 | return 1; |
| 1909 | } |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1910 | else if (ret > len) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1911 | ha_alert("Environment variable '%s' was truncated. Aborting.\n", envname); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1912 | return 1; |
| 1913 | } |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1914 | return 0; |
| 1915 | } |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1916 | |
| 1917 | static int prepare_external_check(struct check *check) |
| 1918 | { |
| 1919 | struct server *s = check->server; |
| 1920 | struct proxy *px = s->proxy; |
| 1921 | struct listener *listener = NULL, *l; |
| 1922 | int i; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1923 | const char *path = px->check_path ? px->check_path : DEF_CHECK_PATH; |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1924 | char buf[256]; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1925 | |
| 1926 | list_for_each_entry(l, &px->conf.listeners, by_fe) |
| 1927 | /* Use the first INET, INET6 or UNIX listener */ |
| 1928 | if (l->addr.ss_family == AF_INET || |
| 1929 | l->addr.ss_family == AF_INET6 || |
| 1930 | l->addr.ss_family == AF_UNIX) { |
| 1931 | listener = l; |
| 1932 | break; |
| 1933 | } |
| 1934 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1935 | check->curpid = NULL; |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1936 | check->envp = calloc((EXTCHK_SIZE + 1), sizeof(char *)); |
| 1937 | if (!check->envp) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1938 | ha_alert("Failed to allocate memory for environment variables. Aborting\n"); |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1939 | goto err; |
| 1940 | } |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1941 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1942 | check->argv = calloc(6, sizeof(char *)); |
| 1943 | if (!check->argv) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1944 | 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] | 1945 | goto err; |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1946 | } |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1947 | |
| 1948 | check->argv[0] = px->check_command; |
| 1949 | |
Cyril Bonté | 777be86 | 2014-12-02 21:21:35 +0100 | [diff] [blame] | 1950 | if (!listener) { |
| 1951 | check->argv[1] = strdup("NOT_USED"); |
| 1952 | check->argv[2] = strdup("NOT_USED"); |
| 1953 | } |
| 1954 | else if (listener->addr.ss_family == AF_INET || |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1955 | listener->addr.ss_family == AF_INET6) { |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1956 | addr_to_str(&listener->addr, buf, sizeof(buf)); |
| 1957 | check->argv[1] = strdup(buf); |
| 1958 | port_to_str(&listener->addr, buf, sizeof(buf)); |
| 1959 | check->argv[2] = strdup(buf); |
Cyril Bonté | 777be86 | 2014-12-02 21:21:35 +0100 | [diff] [blame] | 1960 | } |
| 1961 | else if (listener->addr.ss_family == AF_UNIX) { |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1962 | const struct sockaddr_un *un; |
| 1963 | |
| 1964 | un = (struct sockaddr_un *)&listener->addr; |
| 1965 | check->argv[1] = strdup(un->sun_path); |
| 1966 | check->argv[2] = strdup("NOT_USED"); |
Cyril Bonté | 777be86 | 2014-12-02 21:21:35 +0100 | [diff] [blame] | 1967 | } |
| 1968 | else { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1969 | 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] | 1970 | goto err; |
| 1971 | } |
| 1972 | |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 1973 | if (!check->argv[1] || !check->argv[2]) { |
| 1974 | ha_alert("Starting [%s:%s] check: out of memory.\n", px->id, s->id); |
| 1975 | goto err; |
| 1976 | } |
| 1977 | |
| 1978 | check->argv[3] = calloc(EXTCHK_SIZE_ADDR, sizeof(*check->argv[3])); |
| 1979 | check->argv[4] = calloc(EXTCHK_SIZE_UINT, sizeof(*check->argv[4])); |
| 1980 | if (!check->argv[3] || !check->argv[4]) { |
| 1981 | ha_alert("Starting [%s:%s] check: out of memory.\n", px->id, s->id); |
| 1982 | goto err; |
| 1983 | } |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 1984 | |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 1985 | addr_to_str(&s->addr, check->argv[3], EXTCHK_SIZE_ADDR); |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 1986 | 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] | 1987 | snprintf(check->argv[4], EXTCHK_SIZE_UINT, "%u", s->svc_port); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1988 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1989 | for (i = 0; i < 5; i++) { |
| 1990 | if (!check->argv[i]) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 1991 | 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] | 1992 | goto err; |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1993 | } |
| 1994 | } |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 1995 | |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1996 | EXTCHK_SETENV(check, EXTCHK_PATH, path, err); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 1997 | /* Add proxy environment variables */ |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 1998 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_PROXY_NAME, px->id, err); |
| 1999 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_PROXY_ID, ultoa_r(px->uuid, buf, sizeof(buf)), err); |
| 2000 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_PROXY_ADDR, check->argv[1], err); |
| 2001 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_PROXY_PORT, check->argv[2], err); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 2002 | /* Add server environment variables */ |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2003 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_NAME, s->id, err); |
| 2004 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_ID, ultoa_r(s->puid, buf, sizeof(buf)), err); |
| 2005 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_ADDR, check->argv[3], err); |
| 2006 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_PORT, check->argv[4], err); |
| 2007 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_MAXCONN, ultoa_r(s->maxconn, buf, sizeof(buf)), err); |
| 2008 | EXTCHK_SETENV(check, EXTCHK_HAPROXY_SERVER_CURCONN, ultoa_r(s->cur_sess, buf, sizeof(buf)), err); |
| 2009 | |
| 2010 | /* Ensure that we don't leave any hole in check->envp */ |
| 2011 | for (i = 0; i < EXTCHK_SIZE; i++) |
| 2012 | if (!check->envp[i]) |
| 2013 | EXTCHK_SETENV(check, i, "", err); |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 2014 | |
Cyril Bonté | 99c5bf5 | 2014-08-07 01:55:38 +0200 | [diff] [blame] | 2015 | return 1; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2016 | err: |
| 2017 | if (check->envp) { |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2018 | for (i = 0; i < EXTCHK_SIZE; i++) |
Cyril Bonté | 9ede66b | 2014-12-02 21:21:36 +0100 | [diff] [blame] | 2019 | free(check->envp[i]); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2020 | free(check->envp); |
| 2021 | check->envp = NULL; |
| 2022 | } |
| 2023 | |
| 2024 | if (check->argv) { |
| 2025 | for (i = 1; i < 5; i++) |
| 2026 | free(check->argv[i]); |
| 2027 | free(check->argv); |
| 2028 | check->argv = NULL; |
| 2029 | } |
Cyril Bonté | 99c5bf5 | 2014-08-07 01:55:38 +0200 | [diff] [blame] | 2030 | return 0; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2031 | } |
| 2032 | |
Simon Horman | b00d17a | 2014-06-13 16:18:16 +0900 | [diff] [blame] | 2033 | /* |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2034 | * establish a server health-check that makes use of a process. |
| 2035 | * |
| 2036 | * It can return one of : |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2037 | * - SF_ERR_NONE if everything's OK |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2038 | * - 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] | 2039 | * 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] | 2040 | * |
| 2041 | * Blocks and then unblocks SIGCHLD |
| 2042 | */ |
| 2043 | static int connect_proc_chk(struct task *t) |
| 2044 | { |
Cyril Bonté | ac92a06 | 2014-12-27 22:28:38 +0100 | [diff] [blame] | 2045 | char buf[256]; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2046 | struct check *check = t->context; |
| 2047 | struct server *s = check->server; |
| 2048 | struct proxy *px = s->proxy; |
| 2049 | int status; |
| 2050 | pid_t pid; |
| 2051 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2052 | status = SF_ERR_RESOURCE; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2053 | |
| 2054 | block_sigchld(); |
| 2055 | |
| 2056 | pid = fork(); |
| 2057 | if (pid < 0) { |
Willy Tarreau | d96f112 | 2019-12-03 07:07:36 +0100 | [diff] [blame] | 2058 | ha_alert("Failed to fork process for external health check%s: %s. Aborting.\n", |
| 2059 | (global.tune.options & GTUNE_INSECURE_FORK) ? |
| 2060 | "" : " (likely caused by missing 'insecure-fork-wanted')", |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2061 | strerror(errno)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2062 | set_server_check_status(check, HCHK_STATUS_SOCKERR, strerror(errno)); |
| 2063 | goto out; |
| 2064 | } |
| 2065 | if (pid == 0) { |
| 2066 | /* Child */ |
| 2067 | extern char **environ; |
Willy Tarreau | 9f6dc72 | 2019-03-01 11:15:10 +0100 | [diff] [blame] | 2068 | struct rlimit limit; |
Willy Tarreau | b7b2478 | 2016-06-21 15:32:29 +0200 | [diff] [blame] | 2069 | int fd; |
| 2070 | |
| 2071 | /* close all FDs. Keep stdin/stdout/stderr in verbose mode */ |
| 2072 | fd = (global.mode & (MODE_QUIET|MODE_VERBOSE)) == MODE_QUIET ? 0 : 3; |
| 2073 | |
Willy Tarreau | 2555ccf | 2019-02-21 22:22:06 +0100 | [diff] [blame] | 2074 | my_closefrom(fd); |
Willy Tarreau | b7b2478 | 2016-06-21 15:32:29 +0200 | [diff] [blame] | 2075 | |
Willy Tarreau | 9f6dc72 | 2019-03-01 11:15:10 +0100 | [diff] [blame] | 2076 | /* restore the initial FD limits */ |
| 2077 | limit.rlim_cur = rlim_fd_cur_at_boot; |
| 2078 | limit.rlim_max = rlim_fd_max_at_boot; |
| 2079 | if (setrlimit(RLIMIT_NOFILE, &limit) == -1) { |
| 2080 | getrlimit(RLIMIT_NOFILE, &limit); |
| 2081 | ha_warning("External check: failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n", |
| 2082 | rlim_fd_cur_at_boot, rlim_fd_max_at_boot, |
| 2083 | (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max); |
| 2084 | } |
| 2085 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2086 | environ = check->envp; |
Christopher Faulet | aaae9a0 | 2020-04-26 09:50:31 +0200 | [diff] [blame] | 2087 | |
| 2088 | /* 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] | 2089 | 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] | 2090 | |
| 2091 | addr_to_str(&s->addr, check->argv[3], EXTCHK_SIZE_ADDR); |
| 2092 | extchk_setenv(check, EXTCHK_HAPROXY_SERVER_ADDR, check->argv[3]); |
| 2093 | |
| 2094 | *check->argv[4] = 0; |
| 2095 | if (s->addr.ss_family == AF_INET || s->addr.ss_family == AF_INET6) |
| 2096 | snprintf(check->argv[4], EXTCHK_SIZE_UINT, "%u", s->svc_port); |
| 2097 | extchk_setenv(check, EXTCHK_HAPROXY_SERVER_PORT, check->argv[4]); |
| 2098 | |
Willy Tarreau | 2df8cad | 2019-07-01 07:51:29 +0200 | [diff] [blame] | 2099 | haproxy_unblock_signals(); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2100 | execvp(px->check_command, check->argv); |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2101 | ha_alert("Failed to exec process for external health check: %s. Aborting.\n", |
| 2102 | strerror(errno)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2103 | exit(-1); |
| 2104 | } |
| 2105 | |
| 2106 | /* Parent */ |
| 2107 | if (check->result == CHK_RES_UNKNOWN) { |
| 2108 | if (pid_list_add(pid, t) != NULL) { |
| 2109 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
| 2110 | |
| 2111 | if (px->timeout.check && px->timeout.connect) { |
| 2112 | int t_con = tick_add(now_ms, px->timeout.connect); |
| 2113 | t->expire = tick_first(t->expire, t_con); |
| 2114 | } |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2115 | status = SF_ERR_NONE; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2116 | goto out; |
| 2117 | } |
| 2118 | else { |
| 2119 | set_server_check_status(check, HCHK_STATUS_SOCKERR, strerror(errno)); |
| 2120 | } |
| 2121 | kill(pid, SIGTERM); /* process creation error */ |
| 2122 | } |
| 2123 | else |
| 2124 | set_server_check_status(check, HCHK_STATUS_SOCKERR, strerror(errno)); |
| 2125 | |
| 2126 | out: |
| 2127 | unblock_sigchld(); |
| 2128 | return status; |
| 2129 | } |
| 2130 | |
| 2131 | /* |
Willy Tarreau | 1e62e2a | 2017-10-04 15:07:02 +0200 | [diff] [blame] | 2132 | * manages a server health-check that uses an external process. Returns |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2133 | * the time the task accepts to wait, or TIME_ETERNITY for infinity. |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2134 | * |
| 2135 | * Please do NOT place any return statement in this function and only leave |
| 2136 | * via the out_unlock label. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2137 | */ |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2138 | 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] | 2139 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2140 | struct check *check = context; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2141 | struct server *s = check->server; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2142 | int rv; |
| 2143 | int ret; |
| 2144 | int expired = tick_is_expired(t->expire, now_ms); |
| 2145 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 2146 | HA_SPIN_LOCK(SERVER_LOCK, &check->server->lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2147 | if (!(check->state & CHK_ST_INPROGRESS)) { |
| 2148 | /* no check currently running */ |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2149 | if (!expired) /* woke up too early */ |
| 2150 | goto out_unlock; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2151 | |
| 2152 | /* we don't send any health-checks when the proxy is |
| 2153 | * stopped, the server should not be checked or the check |
| 2154 | * is disabled. |
| 2155 | */ |
| 2156 | if (((check->state & (CHK_ST_ENABLED | CHK_ST_PAUSED)) != CHK_ST_ENABLED) || |
| 2157 | s->proxy->state == PR_STSTOPPED) |
| 2158 | goto reschedule; |
| 2159 | |
| 2160 | /* we'll initiate a new check */ |
| 2161 | set_server_check_status(check, HCHK_STATUS_START, NULL); |
| 2162 | |
| 2163 | check->state |= CHK_ST_INPROGRESS; |
| 2164 | |
Simon Horman | dbf7019 | 2015-01-30 11:22:53 +0900 | [diff] [blame] | 2165 | ret = connect_proc_chk(t); |
Willy Tarreau | d7c3fbd | 2017-10-04 15:19:26 +0200 | [diff] [blame] | 2166 | if (ret == SF_ERR_NONE) { |
Willy Tarreau | 1e62e2a | 2017-10-04 15:07:02 +0200 | [diff] [blame] | 2167 | /* the process was forked, we allow up to min(inter, |
| 2168 | * timeout.connect) for it to report its status, but |
| 2169 | * only when timeout.check is set as it may be to short |
| 2170 | * for a full check otherwise. |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2171 | */ |
| 2172 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
| 2173 | |
| 2174 | if (s->proxy->timeout.check && s->proxy->timeout.connect) { |
| 2175 | int t_con = tick_add(now_ms, s->proxy->timeout.connect); |
| 2176 | t->expire = tick_first(t->expire, t_con); |
| 2177 | } |
Christopher Faulet | 88ce5d1 | 2017-10-20 15:41:18 +0200 | [diff] [blame] | 2178 | task_set_affinity(t, tid_bit); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2179 | goto reschedule; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2180 | } |
| 2181 | |
Willy Tarreau | 1e62e2a | 2017-10-04 15:07:02 +0200 | [diff] [blame] | 2182 | /* here, we failed to start the check */ |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2183 | |
| 2184 | check->state &= ~CHK_ST_INPROGRESS; |
| 2185 | check_notify_failure(check); |
| 2186 | |
| 2187 | /* we allow up to min(inter, timeout.connect) for a connection |
| 2188 | * to establish but only when timeout.check is set |
| 2189 | * as it may be to short for a full check otherwise |
| 2190 | */ |
| 2191 | while (tick_is_expired(t->expire, now_ms)) { |
| 2192 | int t_con; |
| 2193 | |
| 2194 | t_con = tick_add(t->expire, s->proxy->timeout.connect); |
| 2195 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
| 2196 | |
| 2197 | if (s->proxy->timeout.check) |
| 2198 | t->expire = tick_first(t->expire, t_con); |
| 2199 | } |
| 2200 | } |
| 2201 | else { |
| 2202 | /* there was a test running. |
| 2203 | * First, let's check whether there was an uncaught error, |
| 2204 | * which can happen on connect timeout or error. |
| 2205 | */ |
| 2206 | if (check->result == CHK_RES_UNKNOWN) { |
| 2207 | /* good connection is enough for pure TCP check */ |
| 2208 | struct pid_list *elem = check->curpid; |
| 2209 | int status = HCHK_STATUS_UNKNOWN; |
| 2210 | |
| 2211 | if (elem->exited) { |
| 2212 | status = elem->status; /* Save in case the process exits between use below */ |
| 2213 | if (!WIFEXITED(status)) |
| 2214 | check->code = -1; |
| 2215 | else |
| 2216 | check->code = WEXITSTATUS(status); |
| 2217 | if (!WIFEXITED(status) || WEXITSTATUS(status)) |
| 2218 | status = HCHK_STATUS_PROCERR; |
| 2219 | else |
| 2220 | status = HCHK_STATUS_PROCOK; |
| 2221 | } else if (expired) { |
| 2222 | status = HCHK_STATUS_PROCTOUT; |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2223 | ha_warning("kill %d\n", (int)elem->pid); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2224 | kill(elem->pid, SIGTERM); |
| 2225 | } |
| 2226 | set_server_check_status(check, status, NULL); |
| 2227 | } |
| 2228 | |
| 2229 | if (check->result == CHK_RES_FAILED) { |
| 2230 | /* a failure or timeout detected */ |
| 2231 | check_notify_failure(check); |
| 2232 | } |
| 2233 | else if (check->result == CHK_RES_CONDPASS) { |
| 2234 | /* check is OK but asks for stopping mode */ |
| 2235 | check_notify_stopping(check); |
| 2236 | } |
| 2237 | else if (check->result == CHK_RES_PASSED) { |
| 2238 | /* a success was detected */ |
| 2239 | check_notify_success(check); |
| 2240 | } |
Willy Tarreau | 6dd4ac8 | 2019-09-03 18:55:02 +0200 | [diff] [blame] | 2241 | task_set_affinity(t, 1); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2242 | check->state &= ~CHK_ST_INPROGRESS; |
| 2243 | |
| 2244 | pid_list_del(check->curpid); |
| 2245 | |
| 2246 | rv = 0; |
| 2247 | if (global.spread_checks > 0) { |
| 2248 | rv = srv_getinter(check) * global.spread_checks / 100; |
Willy Tarreau | 5a6d3e7 | 2020-03-08 17:53:53 +0100 | [diff] [blame] | 2249 | rv -= (int) (2 * rv * (ha_random32() / 4294967295.0)); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2250 | } |
| 2251 | t->expire = tick_add(now_ms, MS_TO_TICKS(srv_getinter(check) + rv)); |
| 2252 | } |
| 2253 | |
| 2254 | reschedule: |
| 2255 | while (tick_is_expired(t->expire, now_ms)) |
| 2256 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2257 | |
| 2258 | out_unlock: |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 2259 | HA_SPIN_UNLOCK(SERVER_LOCK, &check->server->lock); |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2260 | return t; |
| 2261 | } |
| 2262 | |
| 2263 | /* |
| 2264 | * manages a server health-check that uses a connection. Returns |
| 2265 | * the time the task accepts to wait, or TIME_ETERNITY for infinity. |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2266 | * |
| 2267 | * Please do NOT place any return statement in this function and only leave |
| 2268 | * via the out_unlock label. |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2269 | */ |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2270 | 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] | 2271 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2272 | struct check *check = context; |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2273 | struct proxy *proxy = check->proxy; |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2274 | struct conn_stream *cs = check->cs; |
| 2275 | struct connection *conn = cs_conn(cs); |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2276 | int rv; |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 2277 | int ret; |
Willy Tarreau | acbdc7a | 2012-11-23 14:02:10 +0100 | [diff] [blame] | 2278 | int expired = tick_is_expired(t->expire, now_ms); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2279 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2280 | if (check->server) |
| 2281 | HA_SPIN_LOCK(SERVER_LOCK, &check->server->lock); |
Willy Tarreau | 2c115e5 | 2013-12-11 19:41:16 +0100 | [diff] [blame] | 2282 | if (!(check->state & CHK_ST_INPROGRESS)) { |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2283 | /* no check currently running */ |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2284 | if (!expired) /* woke up too early */ |
| 2285 | goto out_unlock; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2286 | |
Simon Horman | 671b6f0 | 2013-11-25 10:46:39 +0900 | [diff] [blame] | 2287 | /* we don't send any health-checks when the proxy is |
| 2288 | * stopped, the server should not be checked or the check |
| 2289 | * is disabled. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2290 | */ |
Willy Tarreau | 0d924cc | 2013-12-11 21:26:24 +0100 | [diff] [blame] | 2291 | if (((check->state & (CHK_ST_ENABLED | CHK_ST_PAUSED)) != CHK_ST_ENABLED) || |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2292 | proxy->state == PR_STSTOPPED) |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2293 | goto reschedule; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2294 | |
| 2295 | /* we'll initiate a new check */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2296 | set_server_check_status(check, HCHK_STATUS_START, NULL); |
Willy Tarreau | 1ae1b7b | 2012-09-28 15:28:30 +0200 | [diff] [blame] | 2297 | |
Willy Tarreau | 2c115e5 | 2013-12-11 19:41:16 +0100 | [diff] [blame] | 2298 | check->state |= CHK_ST_INPROGRESS; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2299 | b_reset(&check->bi); |
| 2300 | b_reset(&check->bo); |
Willy Tarreau | 1ae1b7b | 2012-09-28 15:28:30 +0200 | [diff] [blame] | 2301 | |
Olivier Houchard | aebeff7 | 2019-11-29 16:18:51 +0100 | [diff] [blame] | 2302 | task_set_affinity(t, tid_bit); |
Simon Horman | dbf7019 | 2015-01-30 11:22:53 +0900 | [diff] [blame] | 2303 | ret = connect_conn_chk(t); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2304 | cs = check->cs; |
| 2305 | conn = cs_conn(cs); |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2306 | |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 2307 | switch (ret) { |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2308 | case SF_ERR_UP: |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2309 | goto out_unlock; |
| 2310 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2311 | case SF_ERR_NONE: |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 2312 | /* we allow up to min(inter, timeout.connect) for a connection |
| 2313 | * to establish but only when timeout.check is set |
| 2314 | * as it may be to short for a full check otherwise |
| 2315 | */ |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2316 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
Krzysztof Piotr Oledzki | 0960541 | 2009-09-23 22:09:24 +0200 | [diff] [blame] | 2317 | |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2318 | if (proxy->timeout.check && proxy->timeout.connect) { |
| 2319 | int t_con = tick_add(now_ms, proxy->timeout.connect); |
Willy Tarreau | fb56aab | 2012-09-28 14:40:02 +0200 | [diff] [blame] | 2320 | t->expire = tick_first(t->expire, t_con); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2321 | } |
Willy Tarreau | 06559ac | 2013-12-05 01:53:08 +0100 | [diff] [blame] | 2322 | |
Willy Tarreau | cc705a6 | 2019-09-05 17:51:30 +0200 | [diff] [blame] | 2323 | if (check->type) { |
| 2324 | /* send the request if we have one. We avoid receiving |
| 2325 | * if not connected, unless we didn't subscribe for |
| 2326 | * sending since otherwise we won't be woken up. |
| 2327 | */ |
| 2328 | __event_srv_chk_w(cs); |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 2329 | if (!(conn->flags & CO_FL_WAIT_XPRT) || |
Willy Tarreau | c594039 | 2019-09-05 17:38:40 +0200 | [diff] [blame] | 2330 | !(check->wait_list.events & SUB_RETRY_SEND)) |
| 2331 | __event_srv_chk_r(cs); |
Willy Tarreau | cc705a6 | 2019-09-05 17:51:30 +0200 | [diff] [blame] | 2332 | } |
Willy Tarreau | 06559ac | 2013-12-05 01:53:08 +0100 | [diff] [blame] | 2333 | |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2334 | goto reschedule; |
| 2335 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2336 | case SF_ERR_SRVTO: /* ETIMEDOUT */ |
| 2337 | case SF_ERR_SRVCL: /* ECONNREFUSED, ENETUNREACH, ... */ |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2338 | if (conn) |
| 2339 | conn->flags |= CO_FL_ERROR; |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 2340 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2341 | break; |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 2342 | /* should share same code than cases below */ |
| 2343 | case SF_ERR_CHK_PORT: |
| 2344 | check->state |= CHK_ST_PORT_MISS; |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2345 | case SF_ERR_PRXCOND: |
| 2346 | case SF_ERR_RESOURCE: |
| 2347 | case SF_ERR_INTERNAL: |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2348 | if (conn) |
| 2349 | conn->flags |= CO_FL_ERROR; |
| 2350 | chk_report_conn_err(check, conn ? 0 : ENOMEM, 0); |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2351 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2352 | } |
| 2353 | |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2354 | /* here, we have seen a synchronous error, no fd was allocated */ |
Olivier Houchard | aebeff7 | 2019-11-29 16:18:51 +0100 | [diff] [blame] | 2355 | task_set_affinity(t, MAX_THREADS_MASK); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2356 | if (cs) { |
Olivier Houchard | 4906554 | 2019-05-31 19:20:36 +0200 | [diff] [blame] | 2357 | if (check->wait_list.events) |
| 2358 | cs->conn->xprt->unsubscribe(cs->conn, |
| 2359 | cs->conn->xprt_ctx, |
| 2360 | check->wait_list.events, |
| 2361 | &check->wait_list); |
| 2362 | /* We may have been scheduled to run, and the |
| 2363 | * I/O handler expects to have a cs, so remove |
| 2364 | * the tasklet |
| 2365 | */ |
Willy Tarreau | 86eded6 | 2019-06-14 14:47:49 +0200 | [diff] [blame] | 2366 | tasklet_remove_from_tasklet_list(check->wait_list.tasklet); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2367 | cs_destroy(cs); |
| 2368 | cs = check->cs = NULL; |
| 2369 | conn = NULL; |
Olivier Houchard | 390485a | 2017-10-24 19:03:30 +0200 | [diff] [blame] | 2370 | } |
Willy Tarreau | 6b0a850 | 2012-11-23 08:51:32 +0100 | [diff] [blame] | 2371 | |
Willy Tarreau | 2c115e5 | 2013-12-11 19:41:16 +0100 | [diff] [blame] | 2372 | check->state &= ~CHK_ST_INPROGRESS; |
Willy Tarreau | 4eec547 | 2014-05-20 22:32:27 +0200 | [diff] [blame] | 2373 | check_notify_failure(check); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2374 | |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 2375 | /* we allow up to min(inter, timeout.connect) for a connection |
| 2376 | * to establish but only when timeout.check is set |
| 2377 | * as it may be to short for a full check otherwise |
| 2378 | */ |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 2379 | while (tick_is_expired(t->expire, now_ms)) { |
| 2380 | int t_con; |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 2381 | |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2382 | t_con = tick_add(t->expire, proxy->timeout.connect); |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2383 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 2384 | |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2385 | if (proxy->timeout.check) |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 2386 | t->expire = tick_first(t->expire, t_con); |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 2387 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2388 | } |
| 2389 | else { |
Willy Tarreau | f150317 | 2012-09-28 19:39:36 +0200 | [diff] [blame] | 2390 | /* there was a test running. |
| 2391 | * First, let's check whether there was an uncaught error, |
| 2392 | * which can happen on connect timeout or error. |
| 2393 | */ |
Simon Horman | ccaabcd | 2014-06-20 12:29:47 +0900 | [diff] [blame] | 2394 | if (check->result == CHK_RES_UNKNOWN) { |
Willy Tarreau | 25e2ab5 | 2013-12-04 11:17:05 +0100 | [diff] [blame] | 2395 | /* good connection is enough for pure TCP check */ |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 2396 | if (!(conn->flags & CO_FL_WAIT_XPRT) && !check->type) { |
Christopher Faulet | f61f33a | 2020-03-27 18:55:49 +0100 | [diff] [blame] | 2397 | if (check->use_ssl == 1) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2398 | set_server_check_status(check, HCHK_STATUS_L6OK, NULL); |
Willy Tarreau | f150317 | 2012-09-28 19:39:36 +0200 | [diff] [blame] | 2399 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2400 | set_server_check_status(check, HCHK_STATUS_L4OK, NULL); |
Willy Tarreau | acbdc7a | 2012-11-23 14:02:10 +0100 | [diff] [blame] | 2401 | } |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 2402 | 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] | 2403 | chk_report_conn_err(check, 0, expired); |
Willy Tarreau | f150317 | 2012-09-28 19:39:36 +0200 | [diff] [blame] | 2404 | } |
Willy Tarreau | 74fa7fb | 2012-11-23 14:43:49 +0100 | [diff] [blame] | 2405 | else |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2406 | goto out_unlock; /* timeout not reached, wait again */ |
Willy Tarreau | f150317 | 2012-09-28 19:39:36 +0200 | [diff] [blame] | 2407 | } |
| 2408 | |
Willy Tarreau | 74fa7fb | 2012-11-23 14:43:49 +0100 | [diff] [blame] | 2409 | /* check complete or aborted */ |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2410 | if (conn && conn->xprt) { |
Willy Tarreau | 5ba04f6 | 2013-02-12 15:23:12 +0100 | [diff] [blame] | 2411 | /* The check was aborted and the connection was not yet closed. |
| 2412 | * This can happen upon timeout, or when an external event such |
| 2413 | * as a failed response coupled with "observe layer7" caused the |
| 2414 | * server state to be suddenly changed. |
| 2415 | */ |
Willy Tarreau | d85c485 | 2015-03-13 00:40:28 +0100 | [diff] [blame] | 2416 | conn_sock_drain(conn); |
Willy Tarreau | a553ae9 | 2017-10-05 18:52:17 +0200 | [diff] [blame] | 2417 | cs_close(cs); |
Willy Tarreau | 5ba04f6 | 2013-02-12 15:23:12 +0100 | [diff] [blame] | 2418 | } |
| 2419 | |
Willy Tarreau | ac59f36 | 2017-10-08 11:10:19 +0200 | [diff] [blame] | 2420 | if (cs) { |
Olivier Houchard | 4906554 | 2019-05-31 19:20:36 +0200 | [diff] [blame] | 2421 | if (check->wait_list.events) |
| 2422 | cs->conn->xprt->unsubscribe(cs->conn, |
| 2423 | cs->conn->xprt_ctx, |
| 2424 | check->wait_list.events, |
| 2425 | &check->wait_list); |
| 2426 | /* We may have been scheduled to run, and the |
Willy Tarreau | 86eded6 | 2019-06-14 14:47:49 +0200 | [diff] [blame] | 2427 | * I/O handler expects to have a cs, so remove |
| 2428 | * the tasklet |
| 2429 | */ |
| 2430 | tasklet_remove_from_tasklet_list(check->wait_list.tasklet); |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2431 | cs_destroy(cs); |
| 2432 | cs = check->cs = NULL; |
| 2433 | conn = NULL; |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2434 | } |
| 2435 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2436 | if (check->server) { |
| 2437 | if (check->result == CHK_RES_FAILED) { |
| 2438 | /* a failure or timeout detected */ |
| 2439 | check_notify_failure(check); |
| 2440 | } |
| 2441 | else if (check->result == CHK_RES_CONDPASS) { |
| 2442 | /* check is OK but asks for stopping mode */ |
| 2443 | check_notify_stopping(check); |
| 2444 | } |
| 2445 | else if (check->result == CHK_RES_PASSED) { |
| 2446 | /* a success was detected */ |
| 2447 | check_notify_success(check); |
| 2448 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2449 | } |
Christopher Faulet | 88ce5d1 | 2017-10-20 15:41:18 +0200 | [diff] [blame] | 2450 | task_set_affinity(t, MAX_THREADS_MASK); |
Willy Tarreau | 2c115e5 | 2013-12-11 19:41:16 +0100 | [diff] [blame] | 2451 | check->state &= ~CHK_ST_INPROGRESS; |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2452 | |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2453 | if (check->server) { |
| 2454 | rv = 0; |
| 2455 | if (global.spread_checks > 0) { |
| 2456 | rv = srv_getinter(check) * global.spread_checks / 100; |
Willy Tarreau | 5a6d3e7 | 2020-03-08 17:53:53 +0100 | [diff] [blame] | 2457 | rv -= (int) (2 * rv * (ha_random32() / 4294967295.0)); |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2458 | } |
| 2459 | 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] | 2460 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2461 | } |
Willy Tarreau | 5a78f36 | 2012-11-23 12:47:05 +0100 | [diff] [blame] | 2462 | |
| 2463 | reschedule: |
| 2464 | while (tick_is_expired(t->expire, now_ms)) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2465 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2466 | out_unlock: |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2467 | if (check->server) |
| 2468 | HA_SPIN_UNLOCK(SERVER_LOCK, &check->server->lock); |
Willy Tarreau | 26c2506 | 2009-03-08 09:38:41 +0100 | [diff] [blame] | 2469 | return t; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2470 | } |
| 2471 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2472 | /* |
| 2473 | * manages a server health-check. Returns |
| 2474 | * the time the task accepts to wait, or TIME_ETERNITY for infinity. |
| 2475 | */ |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2476 | 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] | 2477 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2478 | struct check *check = context; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2479 | |
| 2480 | if (check->type == PR_O2_EXT_CHK) |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 2481 | return process_chk_proc(t, context, state); |
| 2482 | return process_chk_conn(t, context, state); |
Baptiste Assmann | a68ca96 | 2015-04-14 01:15:08 +0200 | [diff] [blame] | 2483 | |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2484 | } |
| 2485 | |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2486 | static int start_check_task(struct check *check, int mininter, |
| 2487 | int nbcheck, int srvpos) |
| 2488 | { |
| 2489 | struct task *t; |
Willy Tarreau | 6dd4ac8 | 2019-09-03 18:55:02 +0200 | [diff] [blame] | 2490 | unsigned long thread_mask = MAX_THREADS_MASK; |
| 2491 | |
| 2492 | if (check->type == PR_O2_EXT_CHK) |
| 2493 | thread_mask = 1; |
| 2494 | |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2495 | /* task for the check */ |
Willy Tarreau | 6dd4ac8 | 2019-09-03 18:55:02 +0200 | [diff] [blame] | 2496 | if ((t = task_new(thread_mask)) == NULL) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2497 | ha_alert("Starting [%s:%s] check: out of memory.\n", |
| 2498 | check->server->proxy->id, check->server->id); |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2499 | return 0; |
| 2500 | } |
| 2501 | |
| 2502 | check->task = t; |
| 2503 | t->process = process_chk; |
| 2504 | t->context = check; |
| 2505 | |
Willy Tarreau | 1746eec | 2014-04-25 10:46:47 +0200 | [diff] [blame] | 2506 | if (mininter < srv_getinter(check)) |
| 2507 | mininter = srv_getinter(check); |
| 2508 | |
| 2509 | if (global.max_spread_checks && mininter > global.max_spread_checks) |
| 2510 | mininter = global.max_spread_checks; |
| 2511 | |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2512 | /* check this every ms */ |
Willy Tarreau | 1746eec | 2014-04-25 10:46:47 +0200 | [diff] [blame] | 2513 | t->expire = tick_add(now_ms, MS_TO_TICKS(mininter * srvpos / nbcheck)); |
Simon Horman | 5c94242 | 2013-11-25 10:46:32 +0900 | [diff] [blame] | 2514 | check->start = now; |
| 2515 | task_queue(t); |
| 2516 | |
| 2517 | return 1; |
| 2518 | } |
| 2519 | |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2520 | /* |
| 2521 | * Start health-check. |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2522 | * 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] | 2523 | */ |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2524 | static int start_checks() |
| 2525 | { |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2526 | |
| 2527 | struct proxy *px; |
| 2528 | struct server *s; |
| 2529 | struct task *t; |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2530 | int nbcheck=0, mininter=0, srvpos=0; |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2531 | |
Willy Tarreau | 2c43a1e | 2007-10-14 23:05:39 +0200 | [diff] [blame] | 2532 | /* 1- count the checkers to run simultaneously. |
| 2533 | * We also determine the minimum interval among all of those which |
| 2534 | * have an interval larger than SRV_CHK_INTER_THRES. This interval |
| 2535 | * will be used to spread their start-up date. Those which have |
Jamie Gloudon | 801a0a3 | 2012-08-25 00:18:33 -0400 | [diff] [blame] | 2536 | * a shorter interval will start independently and will not dictate |
Willy Tarreau | 2c43a1e | 2007-10-14 23:05:39 +0200 | [diff] [blame] | 2537 | * too short an interval for all others. |
| 2538 | */ |
Olivier Houchard | fbc74e8 | 2017-11-24 16:54:05 +0100 | [diff] [blame] | 2539 | for (px = proxies_list; px; px = px->next) { |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2540 | for (s = px->srv; s; s = s->next) { |
Willy Tarreau | e7b7348 | 2013-11-21 11:50:50 +0100 | [diff] [blame] | 2541 | if (s->slowstart) { |
Emeric Brun | c60def8 | 2017-09-27 14:59:38 +0200 | [diff] [blame] | 2542 | if ((t = task_new(MAX_THREADS_MASK)) == NULL) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2543 | 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] | 2544 | return ERR_ALERT | ERR_FATAL; |
Willy Tarreau | e7b7348 | 2013-11-21 11:50:50 +0100 | [diff] [blame] | 2545 | } |
| 2546 | /* We need a warmup task that will be called when the server |
| 2547 | * state switches from down to up. |
| 2548 | */ |
| 2549 | s->warmup = t; |
| 2550 | t->process = server_warmup; |
| 2551 | t->context = s; |
Baptiste Assmann | 6076d1c | 2015-09-17 22:53:59 +0200 | [diff] [blame] | 2552 | /* server can be in this state only because of */ |
Emeric Brun | 52a91d3 | 2017-08-31 14:41:55 +0200 | [diff] [blame] | 2553 | if (s->next_state == SRV_ST_STARTING) |
Baptiste Assmann | 6076d1c | 2015-09-17 22:53:59 +0200 | [diff] [blame] | 2554 | 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] | 2555 | } |
| 2556 | |
Willy Tarreau | d8514a2 | 2013-12-11 21:10:14 +0100 | [diff] [blame] | 2557 | if (s->check.state & CHK_ST_CONFIGURED) { |
| 2558 | nbcheck++; |
| 2559 | if ((srv_getinter(&s->check) >= SRV_CHK_INTER_THRES) && |
| 2560 | (!mininter || mininter > srv_getinter(&s->check))) |
| 2561 | mininter = srv_getinter(&s->check); |
| 2562 | } |
Willy Tarreau | 15f3910 | 2013-12-11 20:41:18 +0100 | [diff] [blame] | 2563 | |
Willy Tarreau | d8514a2 | 2013-12-11 21:10:14 +0100 | [diff] [blame] | 2564 | if (s->agent.state & CHK_ST_CONFIGURED) { |
| 2565 | nbcheck++; |
| 2566 | if ((srv_getinter(&s->agent) >= SRV_CHK_INTER_THRES) && |
| 2567 | (!mininter || mininter > srv_getinter(&s->agent))) |
| 2568 | mininter = srv_getinter(&s->agent); |
| 2569 | } |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2570 | } |
| 2571 | } |
| 2572 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2573 | if (!nbcheck) |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2574 | return 0; |
| 2575 | |
| 2576 | srand((unsigned)time(NULL)); |
| 2577 | |
| 2578 | /* |
| 2579 | * 2- start them as far as possible from each others. For this, we will |
| 2580 | * start them after their interval set to the min interval divided by |
| 2581 | * the number of servers, weighted by the server's position in the list. |
| 2582 | */ |
Olivier Houchard | fbc74e8 | 2017-11-24 16:54:05 +0100 | [diff] [blame] | 2583 | for (px = proxies_list; px; px = px->next) { |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2584 | if ((px->options2 & PR_O2_CHK_ANY) == PR_O2_EXT_CHK) { |
| 2585 | if (init_pid_list()) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 2586 | ha_alert("Starting [%s] check: out of memory.\n", px->id); |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2587 | return ERR_ALERT | ERR_FATAL; |
Simon Horman | 98637e5 | 2014-06-20 12:30:16 +0900 | [diff] [blame] | 2588 | } |
| 2589 | } |
| 2590 | |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2591 | for (s = px->srv; s; s = s->next) { |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2592 | /* A task for the main check */ |
Willy Tarreau | ff5ae35 | 2013-12-11 20:36:34 +0100 | [diff] [blame] | 2593 | if (s->check.state & CHK_ST_CONFIGURED) { |
Cyril Bonté | 99c5bf5 | 2014-08-07 01:55:38 +0200 | [diff] [blame] | 2594 | if (s->check.type == PR_O2_EXT_CHK) { |
| 2595 | if (!prepare_external_check(&s->check)) |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2596 | return ERR_ALERT | ERR_FATAL; |
Cyril Bonté | 99c5bf5 | 2014-08-07 01:55:38 +0200 | [diff] [blame] | 2597 | } |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2598 | if (!start_check_task(&s->check, mininter, nbcheck, srvpos)) |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2599 | return ERR_ALERT | ERR_FATAL; |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2600 | srvpos++; |
| 2601 | } |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2602 | |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2603 | /* A task for a auxiliary agent check */ |
Willy Tarreau | ff5ae35 | 2013-12-11 20:36:34 +0100 | [diff] [blame] | 2604 | if (s->agent.state & CHK_ST_CONFIGURED) { |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2605 | if (!start_check_task(&s->agent, mininter, nbcheck, srvpos)) { |
Willy Tarreau | 865c514 | 2016-12-21 20:04:48 +0100 | [diff] [blame] | 2606 | return ERR_ALERT | ERR_FATAL; |
Simon Horman | d60d691 | 2013-11-25 10:46:36 +0900 | [diff] [blame] | 2607 | } |
| 2608 | srvpos++; |
| 2609 | } |
Krzysztof Oledzki | b304dc7 | 2007-10-14 23:40:01 +0200 | [diff] [blame] | 2610 | } |
| 2611 | } |
| 2612 | return 0; |
| 2613 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 2614 | |
| 2615 | /* |
Willy Tarreau | 5b3a202 | 2012-09-28 15:01:02 +0200 | [diff] [blame] | 2616 | * Perform content verification check on data in s->check.buffer buffer. |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2617 | * The buffer MUST be terminated by a null byte before calling this function. |
| 2618 | * Sets server status appropriately. The caller is responsible for ensuring |
| 2619 | * that the buffer contains at least 13 characters. If <done> is zero, we may |
| 2620 | * return 0 to indicate that data is required to decide of a match. |
| 2621 | */ |
| 2622 | static int httpchk_expect(struct server *s, int done) |
| 2623 | { |
Christopher Faulet | 1bc04c7 | 2017-10-29 20:14:08 +0100 | [diff] [blame] | 2624 | static THREAD_LOCAL char status_msg[] = "HTTP status check returned code <000>"; |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2625 | char status_code[] = "000"; |
| 2626 | char *contentptr; |
| 2627 | int crlf; |
| 2628 | int ret; |
| 2629 | |
| 2630 | switch (s->proxy->options2 & PR_O2_EXP_TYPE) { |
| 2631 | case PR_O2_EXP_STS: |
| 2632 | case PR_O2_EXP_RSTS: |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2633 | memcpy(status_code, b_head(&s->check.bi) + 9, 3); |
| 2634 | 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] | 2635 | |
| 2636 | if ((s->proxy->options2 & PR_O2_EXP_TYPE) == PR_O2_EXP_STS) |
| 2637 | ret = strncmp(s->proxy->expect_str, status_code, 3) == 0; |
| 2638 | else |
Thierry FOURNIER | 09af0d6 | 2014-06-18 11:35:54 +0200 | [diff] [blame] | 2639 | ret = regex_exec(s->proxy->expect_regex, status_code); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2640 | |
| 2641 | /* we necessarily have the response, so there are no partial failures */ |
| 2642 | if (s->proxy->options2 & PR_O2_EXP_INV) |
| 2643 | ret = !ret; |
| 2644 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2645 | 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] | 2646 | break; |
| 2647 | |
| 2648 | case PR_O2_EXP_STR: |
| 2649 | case PR_O2_EXP_RSTR: |
| 2650 | /* very simple response parser: ignore CR and only count consecutive LFs, |
| 2651 | * stop with contentptr pointing to first char after the double CRLF or |
| 2652 | * to '\0' if crlf < 2. |
| 2653 | */ |
| 2654 | crlf = 0; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2655 | for (contentptr = b_head(&s->check.bi); *contentptr; contentptr++) { |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2656 | if (crlf >= 2) |
| 2657 | break; |
| 2658 | if (*contentptr == '\r') |
| 2659 | continue; |
| 2660 | else if (*contentptr == '\n') |
| 2661 | crlf++; |
| 2662 | else |
| 2663 | crlf = 0; |
| 2664 | } |
| 2665 | |
| 2666 | /* Check that response contains a body... */ |
| 2667 | if (crlf < 2) { |
| 2668 | if (!done) |
| 2669 | return 0; |
| 2670 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2671 | set_server_check_status(&s->check, HCHK_STATUS_L7RSP, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2672 | "HTTP content check could not find a response body"); |
| 2673 | return 1; |
| 2674 | } |
| 2675 | |
| 2676 | /* Check that response body is not empty... */ |
| 2677 | if (*contentptr == '\0') { |
Willy Tarreau | a164fb5 | 2011-04-13 09:32:41 +0200 | [diff] [blame] | 2678 | if (!done) |
| 2679 | return 0; |
| 2680 | |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2681 | set_server_check_status(&s->check, HCHK_STATUS_L7RSP, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2682 | "HTTP content check found empty response body"); |
| 2683 | return 1; |
| 2684 | } |
| 2685 | |
| 2686 | /* Check the response content against the supplied string |
| 2687 | * or regex... */ |
| 2688 | if ((s->proxy->options2 & PR_O2_EXP_TYPE) == PR_O2_EXP_STR) |
| 2689 | ret = strstr(contentptr, s->proxy->expect_str) != NULL; |
| 2690 | else |
Thierry FOURNIER | 09af0d6 | 2014-06-18 11:35:54 +0200 | [diff] [blame] | 2691 | ret = regex_exec(s->proxy->expect_regex, contentptr); |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2692 | |
| 2693 | /* if we don't match, we may need to wait more */ |
| 2694 | if (!ret && !done) |
| 2695 | return 0; |
| 2696 | |
| 2697 | if (ret) { |
| 2698 | /* content matched */ |
| 2699 | if (s->proxy->options2 & PR_O2_EXP_INV) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2700 | set_server_check_status(&s->check, HCHK_STATUS_L7RSP, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2701 | "HTTP check matched unwanted content"); |
| 2702 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2703 | set_server_check_status(&s->check, HCHK_STATUS_L7OKD, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2704 | "HTTP content check matched"); |
| 2705 | } |
| 2706 | else { |
| 2707 | if (s->proxy->options2 & PR_O2_EXP_INV) |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2708 | set_server_check_status(&s->check, HCHK_STATUS_L7OKD, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2709 | "HTTP check did not match unwanted content"); |
| 2710 | else |
Simon Horman | 4a74143 | 2013-02-23 15:35:38 +0900 | [diff] [blame] | 2711 | set_server_check_status(&s->check, HCHK_STATUS_L7RSP, |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 2712 | "HTTP content check did not match"); |
| 2713 | } |
| 2714 | break; |
| 2715 | } |
| 2716 | return 1; |
| 2717 | } |
| 2718 | |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2719 | /* |
| 2720 | * return the id of a step in a send/expect session |
| 2721 | */ |
Simon Horman | e16c1b3 | 2015-01-30 11:22:57 +0900 | [diff] [blame] | 2722 | static int tcpcheck_get_step_id(struct check *check) |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2723 | { |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 2724 | /* not even started anything yet => step 0 = initial connect */ |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 2725 | if (!check->current_step && !check->last_started_step) |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 2726 | return 0; |
| 2727 | |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2728 | /* no last started step => first step */ |
| 2729 | if (!check->last_started_step) |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2730 | return 1; |
| 2731 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 2732 | /* last step is the first implicit connect */ |
| 2733 | if (check->last_started_step->index == 0 && |
| 2734 | check->last_started_step->action == TCPCHK_ACT_CONNECT && |
| 2735 | (check->last_started_step->connect.options & TCPCHK_OPT_DEFAULT_CONNECT)) |
| 2736 | return 0; |
| 2737 | |
Gaetan Rivet | 5301b01 | 2020-02-25 17:19:17 +0100 | [diff] [blame] | 2738 | return check->last_started_step->index + 1; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2739 | } |
| 2740 | |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 2741 | /* |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2742 | * return the latest known comment for the current rule, the comment attached to |
| 2743 | * it or the COMMENT rule immediately preceedding the expect rule chain, if any. |
| 2744 | * returns NULL if no comment found. |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 2745 | */ |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2746 | static char *tcpcheck_get_step_comment(struct check *check) |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 2747 | { |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2748 | struct tcpcheck_rule *cur; |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 2749 | char *ret = NULL; |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 2750 | |
| 2751 | /* not even started anything yet, return latest comment found before any action */ |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2752 | if (!check->current_step || !check->last_started_step) { |
| 2753 | cur = LIST_NEXT(check->tcpcheck_rules, typeof(cur), list); |
| 2754 | if (cur->action == TCPCHK_ACT_COMMENT) |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 2755 | ret = cur->comment; |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2756 | goto return_comment; |
| 2757 | } |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 2758 | |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2759 | if (check->last_started_step->comment) { |
| 2760 | ret = check->last_started_step->comment; |
| 2761 | goto return_comment; |
| 2762 | } |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 2763 | |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2764 | cur = LIST_PREV(&check->last_started_step->list, typeof(cur), list); |
| 2765 | list_for_each_entry_from_rev(cur, check->tcpcheck_rules, list) { |
| 2766 | if (cur->action == TCPCHK_ACT_COMMENT) { |
| 2767 | ret = cur->comment; |
| 2768 | break; |
| 2769 | } |
| 2770 | else if (cur->action != TCPCHK_ACT_EXPECT) |
| 2771 | break; |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 2772 | } |
| 2773 | |
| 2774 | return_comment: |
| 2775 | return ret; |
| 2776 | } |
| 2777 | |
Willy Tarreau | be74b88 | 2017-10-04 16:22:49 +0200 | [diff] [blame] | 2778 | /* proceed with next steps for the TCP checks <check>. Note that this is called |
| 2779 | * both from the connection's wake() callback and from the check scheduling task. |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 2780 | * It returns 0 on normal cases, or <0 if a close() has happened on an existing |
| 2781 | * connection, presenting the risk of an fd replacement. |
Willy Tarreau | 62ac84f | 2017-11-05 10:11:13 +0100 | [diff] [blame] | 2782 | * |
| 2783 | * Please do NOT place any return statement in this function and only leave |
Willy Tarreau | 2ab5c38 | 2019-07-17 18:48:07 +0200 | [diff] [blame] | 2784 | * via the out_end_tcpcheck label after setting retcode. |
Willy Tarreau | be74b88 | 2017-10-04 16:22:49 +0200 | [diff] [blame] | 2785 | */ |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 2786 | static int tcpcheck_main(struct check *check) |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2787 | { |
Willy Tarreau | ce8c42a | 2015-05-13 11:23:01 +0200 | [diff] [blame] | 2788 | struct tcpcheck_rule *next; |
Baptiste Assmann | cfbd1b8 | 2015-05-02 09:00:23 +0200 | [diff] [blame] | 2789 | int done = 0, ret = 0, step = 0; |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2790 | struct conn_stream *cs = check->cs; |
| 2791 | struct connection *conn = cs_conn(cs); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2792 | struct server *s = check->server; |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2793 | struct proxy *proxy = check->proxy; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2794 | struct task *t = check->task; |
Simon Horman | e16c1b3 | 2015-01-30 11:22:57 +0900 | [diff] [blame] | 2795 | struct list *head = check->tcpcheck_rules; |
Gaetan Rivet | efab6c6 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 2796 | char *comment; |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 2797 | int retcode = 0; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2798 | |
Willy Tarreau | ef95395 | 2014-10-02 14:30:14 +0200 | [diff] [blame] | 2799 | /* here, we know that the check is complete or that it failed */ |
| 2800 | if (check->result != CHK_RES_UNKNOWN) |
| 2801 | goto out_end_tcpcheck; |
| 2802 | |
| 2803 | /* We have 4 possibilities here : |
| 2804 | * 1. we've not yet attempted step 1, and step 1 is a connect, so no |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2805 | * connection attempt was made yet ; conn==NULL;current_step==NULL. |
Willy Tarreau | ef95395 | 2014-10-02 14:30:14 +0200 | [diff] [blame] | 2806 | * 2. we've not yet attempted step 1, and step 1 is a not connect or |
| 2807 | * does not exist (no rule), so a connection attempt was made |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2808 | * before coming here, conn!=NULL. |
Willy Tarreau | ef95395 | 2014-10-02 14:30:14 +0200 | [diff] [blame] | 2809 | * 3. we're coming back after having started with step 1, so we may |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2810 | * be waiting for a connection attempt to complete. conn!=NULL. |
| 2811 | * 4. the connection + handshake are complete. conn!=NULL. |
Willy Tarreau | ef95395 | 2014-10-02 14:30:14 +0200 | [diff] [blame] | 2812 | * |
| 2813 | * #2 and #3 are quite similar, we want both the connection and the |
| 2814 | * handshake to complete before going any further. Thus we must always |
| 2815 | * wait for a connection to complete unless we're before and existing |
| 2816 | * step 1. |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2817 | */ |
Willy Tarreau | 449f952 | 2015-05-13 15:39:48 +0200 | [diff] [blame] | 2818 | |
| 2819 | /* find first rule and skip comments */ |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 2820 | next = get_first_tcpcheck_rule(head); |
Willy Tarreau | 449f952 | 2015-05-13 15:39:48 +0200 | [diff] [blame] | 2821 | |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 2822 | if ((check->current_step || next == NULL) && |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 2823 | (conn->flags & CO_FL_WAIT_XPRT)) { |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2824 | /* we allow up to min(inter, timeout.connect) for a connection |
| 2825 | * to establish but only when timeout.check is set |
| 2826 | * as it may be to short for a full check otherwise |
| 2827 | */ |
| 2828 | while (tick_is_expired(t->expire, now_ms)) { |
| 2829 | int t_con; |
| 2830 | |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2831 | t_con = tick_add(t->expire, proxy->timeout.connect); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2832 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
| 2833 | |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2834 | if (proxy->timeout.check) |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2835 | t->expire = tick_first(t->expire, t_con); |
| 2836 | } |
Christopher Faulet | b610285 | 2017-11-28 10:06:29 +0100 | [diff] [blame] | 2837 | goto out; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2838 | } |
| 2839 | |
Willy Tarreau | ef95395 | 2014-10-02 14:30:14 +0200 | [diff] [blame] | 2840 | /* special case: option tcp-check with no rule, a connect is enough */ |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 2841 | if (next == NULL) { |
Willy Tarreau | ef95395 | 2014-10-02 14:30:14 +0200 | [diff] [blame] | 2842 | set_server_check_status(check, HCHK_STATUS_L4OK, NULL); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2843 | goto out_end_tcpcheck; |
Willy Tarreau | ef95395 | 2014-10-02 14:30:14 +0200 | [diff] [blame] | 2844 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2845 | |
Willy Tarreau | 213c678 | 2014-10-02 14:51:02 +0200 | [diff] [blame] | 2846 | /* no step means first step initialisation */ |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 2847 | if (check->current_step == NULL && check->last_started_step == NULL) { |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2848 | b_reset(&check->bo); |
| 2849 | b_reset(&check->bi); |
Willy Tarreau | 449f952 | 2015-05-13 15:39:48 +0200 | [diff] [blame] | 2850 | check->current_step = next; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2851 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 2852 | if (proxy->timeout.check) |
| 2853 | t->expire = tick_add_ifset(now_ms, proxy->timeout.check); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2854 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 2855 | |
Willy Tarreau | abca5b6 | 2013-12-06 14:19:25 +0100 | [diff] [blame] | 2856 | while (1) { |
Willy Tarreau | 263013d | 2015-05-13 11:59:14 +0200 | [diff] [blame] | 2857 | /* We have to try to flush the output buffer before reading, at |
| 2858 | * the end, or if we're about to send a string that does not fit |
| 2859 | * in the remaining space. That explains why we break out of the |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2860 | * loop after this control. If we have data, conn is valid. |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 2861 | */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 2862 | if (b_data(&check->bo) && |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 2863 | (check->current_step == NULL || |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 2864 | check->current_step->action != TCPCHK_ACT_SEND || |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 2865 | check->current_step->send.length >= b_room(&check->bo))) { |
Willy Tarreau | deccd11 | 2018-06-14 18:38:55 +0200 | [diff] [blame] | 2866 | int ret; |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 2867 | |
Olivier Houchard | ed0f207 | 2018-08-16 15:41:52 +0200 | [diff] [blame] | 2868 | ret = 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] | 2869 | b_realign_if_empty(&check->bo); |
Willy Tarreau | deccd11 | 2018-06-14 18:38:55 +0200 | [diff] [blame] | 2870 | |
| 2871 | if (ret <= 0) { |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 2872 | if (conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) { |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 2873 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 2874 | goto out_end_tcpcheck; |
| 2875 | } |
Willy Tarreau | 263013d | 2015-05-13 11:59:14 +0200 | [diff] [blame] | 2876 | break; |
Willy Tarreau | abca5b6 | 2013-12-06 14:19:25 +0100 | [diff] [blame] | 2877 | } |
Olivier Houchard | 4501c3e | 2018-08-28 19:36:18 +0200 | [diff] [blame] | 2878 | if (b_data(&check->bo)) { |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 2879 | cs->conn->mux->subscribe(cs, SUB_RETRY_SEND, &check->wait_list); |
Olivier Houchard | 4501c3e | 2018-08-28 19:36:18 +0200 | [diff] [blame] | 2880 | goto out; |
| 2881 | } |
Willy Tarreau | abca5b6 | 2013-12-06 14:19:25 +0100 | [diff] [blame] | 2882 | } |
| 2883 | |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 2884 | if (check->current_step == NULL) |
Willy Tarreau | abca5b6 | 2013-12-06 14:19:25 +0100 | [diff] [blame] | 2885 | break; |
| 2886 | |
Willy Tarreau | ce8c42a | 2015-05-13 11:23:01 +0200 | [diff] [blame] | 2887 | /* have 'next' point to the next rule or NULL if we're on the |
| 2888 | * last one, connect() needs this. |
| 2889 | */ |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 2890 | next = get_next_tcpcheck_rule(head, check->current_step); |
Willy Tarreau | f3d3482 | 2014-12-08 12:11:28 +0100 | [diff] [blame] | 2891 | |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2892 | if (check->current_step->action == TCPCHK_ACT_CONNECT) { |
Gaetan Rivet | 06d963a | 2020-02-21 18:49:05 +0100 | [diff] [blame] | 2893 | struct tcpcheck_connect *connect = &check->current_step->connect; |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2894 | struct protocol *proto; |
| 2895 | struct xprt_ops *xprt; |
| 2896 | |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2897 | /* For a connect action we'll create a new connection. |
| 2898 | * We may also have to kill a previous one. But we don't |
| 2899 | * want to leave *without* a connection if we came here |
| 2900 | * from the connection layer, hence with a connection. |
| 2901 | * Thus we'll proceed in the following order : |
| 2902 | * 1: close but not release previous connection |
| 2903 | * 2: try to get a new connection |
| 2904 | * 3: release and replace the old one on success |
| 2905 | */ |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2906 | if (check->cs) { |
Willy Tarreau | a553ae9 | 2017-10-05 18:52:17 +0200 | [diff] [blame] | 2907 | cs_close(check->cs); |
| 2908 | retcode = -1; /* do not reuse the fd in the caller! */ |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2909 | } |
| 2910 | |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2911 | /* mark the step as started */ |
| 2912 | check->last_started_step = check->current_step; |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2913 | |
| 2914 | /* prepare new connection */ |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2915 | cs = cs_new(NULL); |
| 2916 | if (!cs) { |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2917 | step = tcpcheck_get_step_id(check); |
| 2918 | chunk_printf(&trash, "TCPCHK error allocating connection at step %d", step); |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 2919 | comment = tcpcheck_get_step_comment(check); |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2920 | if (comment) |
| 2921 | chunk_appendf(&trash, " comment: '%s'", comment); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 2922 | set_server_check_status(check, HCHK_STATUS_SOCKERR, |
| 2923 | trash.area); |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2924 | check->current_step = NULL; |
Christopher Faulet | b610285 | 2017-11-28 10:06:29 +0100 | [diff] [blame] | 2925 | goto out; |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2926 | } |
| 2927 | |
Olivier Houchard | 4906554 | 2019-05-31 19:20:36 +0200 | [diff] [blame] | 2928 | if (check->cs) { |
| 2929 | if (check->wait_list.events) |
| 2930 | cs->conn->xprt->unsubscribe(cs->conn, |
| 2931 | cs->conn->xprt_ctx, |
| 2932 | check->wait_list.events, |
| 2933 | &check->wait_list); |
Willy Tarreau | 86eded6 | 2019-06-14 14:47:49 +0200 | [diff] [blame] | 2934 | /* We may have been scheduled to run, and the |
| 2935 | * I/O handler expects to have a cs, so remove |
| 2936 | * the tasklet |
| 2937 | */ |
| 2938 | tasklet_remove_from_tasklet_list(check->wait_list.tasklet); |
Willy Tarreau | ac59f36 | 2017-10-08 11:10:19 +0200 | [diff] [blame] | 2939 | cs_destroy(check->cs); |
Olivier Houchard | 4906554 | 2019-05-31 19:20:36 +0200 | [diff] [blame] | 2940 | } |
Willy Tarreau | 0014912 | 2017-10-04 18:05:01 +0200 | [diff] [blame] | 2941 | |
Olivier Houchard | ff1e9f3 | 2019-09-20 17:18:35 +0200 | [diff] [blame] | 2942 | tasklet_set_tid(check->wait_list.tasklet, tid); |
| 2943 | |
Olivier Houchard | 9aaf778 | 2017-09-13 18:30:23 +0200 | [diff] [blame] | 2944 | check->cs = cs; |
| 2945 | conn = cs->conn; |
Olivier Houchard | 26e1a8f | 2018-09-12 15:15:12 +0200 | [diff] [blame] | 2946 | /* Maybe there were an older connection we were waiting on */ |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 2947 | check->wait_list.events = 0; |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 2948 | conn->target = s ? &s->obj_type : &proxy->obj_type; |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2949 | |
| 2950 | /* no client address */ |
Willy Tarreau | ca79f59 | 2019-07-17 19:04:47 +0200 | [diff] [blame] | 2951 | |
| 2952 | if (!sockaddr_alloc(&conn->dst)) { |
| 2953 | ret = SF_ERR_RESOURCE; |
| 2954 | goto fail_check; |
| 2955 | } |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2956 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 2957 | /* connect to the check addr if specified on the |
| 2958 | * server. otherwise, use the server addr |
| 2959 | */ |
| 2960 | *conn->dst = (is_addr(&check->addr) ? check->addr : s->addr); |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 2961 | proto = protocol_by_family(conn->dst->ss_family); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2962 | |
Gaetan Rivet | 06d963a | 2020-02-21 18:49:05 +0100 | [diff] [blame] | 2963 | if (connect->port) |
| 2964 | set_host_port(conn->dst, connect->port); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2965 | else if (check->port) |
Willy Tarreau | b3c81cb | 2019-07-17 16:54:52 +0200 | [diff] [blame] | 2966 | set_host_port(conn->dst, check->port); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2967 | else { |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 2968 | int i = get_host_port(&check->addr); |
| 2969 | |
| 2970 | set_host_port(conn->dst, ((i > 0) ? i : s->svc_port)); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2971 | } |
Willy Tarreau | be37315 | 2018-09-06 11:45:30 +0200 | [diff] [blame] | 2972 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 2973 | xprt = ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) |
| 2974 | ? check->xprt |
| 2975 | : ((connect->options & TCPCHK_OPT_SSL) ? xprt_get(XPRT_SSL) : xprt_get(XPRT_RAW))); |
Willy Tarreau | 2ab5c38 | 2019-07-17 18:48:07 +0200 | [diff] [blame] | 2976 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 2977 | conn_prepare(conn, proto, xprt); |
Willy Tarreau | 2ab5c38 | 2019-07-17 18:48:07 +0200 | [diff] [blame] | 2978 | if (conn_install_mux(conn, &mux_pt_ops, cs, proxy, NULL) < 0) { |
| 2979 | ret = SF_ERR_RESOURCE; |
| 2980 | goto fail_check; |
| 2981 | } |
Willy Tarreau | be37315 | 2018-09-06 11:45:30 +0200 | [diff] [blame] | 2982 | cs_attach(cs, check, &check_conn_cb); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 2983 | |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 2984 | ret = SF_ERR_INTERNAL; |
Gaetan Rivet | 08fdcb3 | 2020-02-28 11:04:21 +0100 | [diff] [blame] | 2985 | if (proto && proto->connect) { |
| 2986 | int flags; |
| 2987 | |
| 2988 | flags = CONNECT_HAS_DATA; |
| 2989 | if (next && next->action != TCPCHK_ACT_EXPECT) |
| 2990 | flags |= CONNECT_DELACK_ALWAYS; |
| 2991 | ret = proto->connect(conn, flags); |
| 2992 | } |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 2993 | |
| 2994 | if (connect->options & TCPCHK_OPT_DEFAULT_CONNECT) { |
| 2995 | #ifdef USE_OPENSSL |
| 2996 | if (ret == SF_ERR_NONE) { |
| 2997 | if (s->check.sni) |
| 2998 | ssl_sock_set_servername(conn, s->check.sni); |
| 2999 | if (s->check.alpn_str) |
| 3000 | ssl_sock_set_alpn(conn, (unsigned char *)s->check.alpn_str, |
| 3001 | s->check.alpn_len); |
| 3002 | } |
| 3003 | #endif |
| 3004 | if (s->check.via_socks4 && (s->flags & SRV_F_SOCKS4_PROXY)) { |
| 3005 | conn->send_proxy_ofs = 1; |
| 3006 | conn->flags |= CO_FL_SOCKS4; |
| 3007 | } |
| 3008 | if (s->check.send_proxy && !(check->state & CHK_ST_AGENT)) { |
| 3009 | conn->send_proxy_ofs = 1; |
| 3010 | conn->flags |= CO_FL_SEND_PROXY; |
| 3011 | } |
| 3012 | } |
| 3013 | else { |
| 3014 | /* TODO: add sock4 and sni option */ |
| 3015 | if (connect->options & TCPCHK_OPT_SEND_PROXY) { |
| 3016 | conn->send_proxy_ofs = 1; |
| 3017 | conn->flags |= CO_FL_SEND_PROXY; |
| 3018 | } |
| 3019 | |
| 3020 | if (conn_ctrl_ready(conn) && (connect->options & TCPCHK_OPT_LINGER)) { |
| 3021 | /* Some servers don't like reset on close */ |
| 3022 | fdtab[cs->conn->handle.fd].linger_risk = 0; |
| 3023 | } |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3024 | } |
| 3025 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 3026 | if (conn_ctrl_ready(conn) && (conn->flags & (CO_FL_SEND_PROXY | CO_FL_SOCKS4))) { |
| 3027 | if (xprt_add_hs(conn) < 0) |
| 3028 | ret = SF_ERR_RESOURCE; |
Gaetan Rivet | f8ba677 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3029 | } |
| 3030 | |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3031 | /* It can return one of : |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 3032 | * - SF_ERR_NONE if everything's OK |
| 3033 | * - SF_ERR_SRVTO if there are no more servers |
| 3034 | * - SF_ERR_SRVCL if the connection was refused by the server |
| 3035 | * - SF_ERR_PRXCOND if the connection has been limited by the proxy (maxconn) |
| 3036 | * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...) |
| 3037 | * - SF_ERR_INTERNAL for any other purely internal errors |
Tim Düsterhus | 4896c44 | 2016-11-29 02:15:19 +0100 | [diff] [blame] | 3038 | * Additionally, in the case of SF_ERR_RESOURCE, an emergency log will be emitted. |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3039 | * Note that we try to prevent the network stack from sending the ACK during the |
| 3040 | * connect() when a pure TCP check is used (without PROXY protocol). |
| 3041 | */ |
Willy Tarreau | 2ab5c38 | 2019-07-17 18:48:07 +0200 | [diff] [blame] | 3042 | fail_check: |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3043 | switch (ret) { |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 3044 | case SF_ERR_NONE: |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3045 | /* we allow up to min(inter, timeout.connect) for a connection |
| 3046 | * to establish but only when timeout.check is set |
| 3047 | * as it may be to short for a full check otherwise |
| 3048 | */ |
| 3049 | t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter)); |
| 3050 | |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 3051 | if (proxy->timeout.check && proxy->timeout.connect) { |
| 3052 | int t_con = tick_add(now_ms, proxy->timeout.connect); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3053 | t->expire = tick_first(t->expire, t_con); |
| 3054 | } |
| 3055 | break; |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 3056 | case SF_ERR_SRVTO: /* ETIMEDOUT */ |
| 3057 | case SF_ERR_SRVCL: /* ECONNREFUSED, ENETUNREACH, ... */ |
Baptiste Assmann | cfbd1b8 | 2015-05-02 09:00:23 +0200 | [diff] [blame] | 3058 | step = tcpcheck_get_step_id(check); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3059 | chunk_printf(&trash, "TCPCHK error establishing connection at step %d: %s", |
Baptiste Assmann | cfbd1b8 | 2015-05-02 09:00:23 +0200 | [diff] [blame] | 3060 | step, strerror(errno)); |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 3061 | comment = tcpcheck_get_step_comment(check); |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 3062 | if (comment) |
| 3063 | chunk_appendf(&trash, " comment: '%s'", comment); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 3064 | set_server_check_status(check, HCHK_STATUS_L4CON, |
| 3065 | trash.area); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3066 | goto out_end_tcpcheck; |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 3067 | case SF_ERR_PRXCOND: |
| 3068 | case SF_ERR_RESOURCE: |
| 3069 | case SF_ERR_INTERNAL: |
Baptiste Assmann | cfbd1b8 | 2015-05-02 09:00:23 +0200 | [diff] [blame] | 3070 | step = tcpcheck_get_step_id(check); |
| 3071 | chunk_printf(&trash, "TCPCHK error establishing connection at step %d", step); |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 3072 | comment = tcpcheck_get_step_comment(check); |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 3073 | if (comment) |
| 3074 | chunk_appendf(&trash, " comment: '%s'", comment); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 3075 | set_server_check_status(check, HCHK_STATUS_SOCKERR, |
| 3076 | trash.area); |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3077 | goto out_end_tcpcheck; |
| 3078 | } |
| 3079 | |
| 3080 | /* allow next rule */ |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 3081 | check->current_step = get_next_tcpcheck_rule(head, check->current_step); |
| 3082 | if (check->current_step == NULL) |
Willy Tarreau | f2c8735 | 2015-05-13 12:08:21 +0200 | [diff] [blame] | 3083 | break; |
| 3084 | |
Willy Tarreau | 7df8ca6 | 2019-07-15 10:57:51 +0200 | [diff] [blame] | 3085 | /* don't do anything until the connection is established */ |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 3086 | if (conn->flags & CO_FL_WAIT_XPRT) |
Willy Tarreau | 7df8ca6 | 2019-07-15 10:57:51 +0200 | [diff] [blame] | 3087 | break; |
| 3088 | |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3089 | } /* end 'connect' */ |
| 3090 | else if (check->current_step->action == TCPCHK_ACT_SEND) { |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3091 | struct tcpcheck_send *send = &check->current_step->send; |
| 3092 | |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3093 | /* mark the step as started */ |
| 3094 | check->last_started_step = check->current_step; |
| 3095 | |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3096 | /* reset the read buffer */ |
Christopher Faulet | 21f3695 | 2020-03-19 16:59:45 +0100 | [diff] [blame] | 3097 | b_reset(&check->bi); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3098 | |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3099 | if (send->length >= b_size(&check->bo)) { |
Willy Tarreau | 506a29a | 2018-07-18 10:07:58 +0200 | [diff] [blame] | 3100 | chunk_printf(&trash, "tcp-check send : string too large (%d) for buffer size (%u) at step %d", |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3101 | send->length, (unsigned int)b_size(&check->bo), |
Simon Horman | e16c1b3 | 2015-01-30 11:22:57 +0900 | [diff] [blame] | 3102 | tcpcheck_get_step_id(check)); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 3103 | set_server_check_status(check, HCHK_STATUS_L7RSP, |
| 3104 | trash.area); |
Willy Tarreau | abca5b6 | 2013-12-06 14:19:25 +0100 | [diff] [blame] | 3105 | goto out_end_tcpcheck; |
| 3106 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3107 | |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 3108 | /* do not try to send if there is no space */ |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3109 | if (send->length >= b_room(&check->bo)) |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 3110 | continue; |
| 3111 | |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3112 | switch (send->type) { |
| 3113 | case TCPCHK_SEND_STRING: |
| 3114 | case TCPCHK_SEND_BINARY: |
| 3115 | b_putblk(&check->bo, send->string, send->length); |
| 3116 | break; |
| 3117 | case TCPCHK_SEND_UNDEF: |
| 3118 | /* Should never happen. */ |
| 3119 | retcode = -1; |
| 3120 | goto out; |
| 3121 | }; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3122 | |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 3123 | check->current_step = get_next_tcpcheck_rule(head, check->current_step); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3124 | } /* end 'send' */ |
Willy Tarreau | 98aec9f | 2013-12-06 16:16:41 +0100 | [diff] [blame] | 3125 | else if (check->current_step->action == TCPCHK_ACT_EXPECT) { |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3126 | struct tcpcheck_expect *expect = &check->current_step->expect; |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3127 | char *diag; |
| 3128 | int match; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3129 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 3130 | if (unlikely(check->result == CHK_RES_FAILED)) |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3131 | goto out_end_tcpcheck; |
| 3132 | |
Olivier Houchard | 0ba6c85 | 2019-07-18 15:09:08 +0200 | [diff] [blame] | 3133 | /* If we already subscribed, then we tried to received |
| 3134 | * and failed, so there's no point trying again. |
| 3135 | */ |
| 3136 | if (check->wait_list.events & SUB_RETRY_RECV) |
| 3137 | break; |
Olivier Houchard | 511efea | 2018-08-16 15:30:32 +0200 | [diff] [blame] | 3138 | if (cs->conn->mux->rcv_buf(cs, &check->bi, b_size(&check->bi), 0) <= 0) { |
Willy Tarreau | 4ff3b89 | 2017-10-16 15:17:17 +0200 | [diff] [blame] | 3139 | if (conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH) || cs->flags & CS_FL_ERROR) { |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 3140 | done = 1; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3141 | if ((conn->flags & CO_FL_ERROR || cs->flags & CS_FL_ERROR) && !b_data(&check->bi)) { |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 3142 | /* Report network errors only if we got no other data. Otherwise |
| 3143 | * we'll let the upper layers decide whether the response is OK |
| 3144 | * or not. It is very common that an RST sent by the server is |
| 3145 | * reported as an error just after the last data chunk. |
| 3146 | */ |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 3147 | chk_report_conn_err(check, errno, 0); |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 3148 | goto out_end_tcpcheck; |
| 3149 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3150 | } |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 3151 | else { |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 3152 | conn->mux->subscribe(cs, SUB_RETRY_RECV, &check->wait_list); |
Willy Tarreau | 263013d | 2015-05-13 11:59:14 +0200 | [diff] [blame] | 3153 | break; |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 3154 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3155 | } |
| 3156 | |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3157 | /* Having received new data, reset the expect chain to its head. */ |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3158 | check->current_step = expect->head; |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3159 | |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3160 | /* mark the step as started */ |
| 3161 | check->last_started_step = check->current_step; |
| 3162 | |
Christopher Faulet | 21f3695 | 2020-03-19 16:59:45 +0100 | [diff] [blame] | 3163 | /* buffer full, don't wait for more data */ |
| 3164 | if (b_full(&check->bi)) |
| 3165 | done = 1; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3166 | |
| 3167 | /* Check that response body is not empty... */ |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3168 | if (!b_data(&check->bi)) { |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3169 | if (!done) |
Willy Tarreau | fbe0edf | 2013-12-06 16:54:31 +0100 | [diff] [blame] | 3170 | continue; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3171 | |
| 3172 | /* empty response */ |
Baptiste Assmann | cfbd1b8 | 2015-05-02 09:00:23 +0200 | [diff] [blame] | 3173 | step = tcpcheck_get_step_id(check); |
| 3174 | chunk_printf(&trash, "TCPCHK got an empty response at step %d", step); |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 3175 | comment = tcpcheck_get_step_comment(check); |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 3176 | if (comment) |
| 3177 | chunk_appendf(&trash, " comment: '%s'", comment); |
Willy Tarreau | 843b7cb | 2018-07-13 10:54:26 +0200 | [diff] [blame] | 3178 | set_server_check_status(check, HCHK_STATUS_L7RSP, |
| 3179 | trash.area); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3180 | |
| 3181 | goto out_end_tcpcheck; |
| 3182 | } |
| 3183 | |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3184 | next_tcpcheck_expect: |
Gaetan Rivet | 1afd826 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3185 | /* The current expect might need more data than the previous one, check again |
| 3186 | * that the minimum amount data required to match is respected. |
| 3187 | */ |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3188 | if (!done) { |
| 3189 | if ((expect->type == TCPCHK_EXPECT_STRING || expect->type == TCPCHK_EXPECT_BINARY) && |
| 3190 | (b_data(&check->bi) < expect->length)) |
| 3191 | continue; /* try to read more */ |
| 3192 | if (expect->min_recv > 0 && (b_data(&check->bi) < expect->min_recv)) |
| 3193 | continue; /* try to read more */ |
| 3194 | } |
| 3195 | |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3196 | /* Make GCC happy ; initialize match to a failure state. */ |
| 3197 | match = expect->inverse; |
| 3198 | |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3199 | switch (expect->type) { |
| 3200 | case TCPCHK_EXPECT_STRING: |
| 3201 | case TCPCHK_EXPECT_BINARY: |
Christopher Faulet | 21f3695 | 2020-03-19 16:59:45 +0100 | [diff] [blame] | 3202 | match = my_memmem(b_head(&check->bi), b_data(&check->bi), expect->string, expect->length) != NULL; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3203 | break; |
| 3204 | case TCPCHK_EXPECT_REGEX: |
Gaetan Rivet | 9dcb09f | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3205 | if (expect->with_capture) |
| 3206 | match = regex_exec_match2(expect->regex, b_head(&check->bi), MIN(b_data(&check->bi), b_size(&check->bi)-1), |
| 3207 | MAX_MATCH, pmatch, 0); |
| 3208 | else |
| 3209 | match = regex_exec2(expect->regex, b_head(&check->bi), MIN(b_data(&check->bi), b_size(&check->bi)-1)); |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3210 | break; |
Gaetan Rivet | efab6c6 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3211 | |
| 3212 | case TCPCHK_EXPECT_REGEX_BINARY: |
| 3213 | chunk_reset(&trash); |
| 3214 | dump_binary(&trash, b_head(&check->bi), b_data(&check->bi)); |
Gaetan Rivet | 9dcb09f | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3215 | if (expect->with_capture) |
| 3216 | match = regex_exec_match2(expect->regex, b_head(&trash), MIN(b_data(&trash), b_size(&trash)-1), |
| 3217 | MAX_MATCH, pmatch, 0); |
| 3218 | else |
| 3219 | match = regex_exec2(expect->regex, b_head(&trash), MIN(b_data(&trash), b_size(&trash)-1)); |
Gaetan Rivet | efab6c6 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3220 | break; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3221 | case TCPCHK_EXPECT_UNDEF: |
| 3222 | /* Should never happen. */ |
| 3223 | retcode = -1; |
| 3224 | goto out; |
| 3225 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3226 | |
Gaetan Rivet | 1afd826 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3227 | /* Wait for more data on mismatch only if no minimum is defined (-1), |
| 3228 | * otherwise the absence of match is already conclusive. |
| 3229 | */ |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3230 | if (!match && !done && (expect->min_recv == -1)) |
Willy Tarreau | a970c28 | 2013-12-06 12:47:19 +0100 | [diff] [blame] | 3231 | continue; /* try to read more */ |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3232 | |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3233 | if (match ^ expect->inverse) { |
| 3234 | /* Result as expected, next rule. */ |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 3235 | check->current_step = get_next_tcpcheck_rule(head, check->current_step); |
| 3236 | if (check->current_step == NULL) |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3237 | break; |
Willy Tarreau | f2c8735 | 2015-05-13 12:08:21 +0200 | [diff] [blame] | 3238 | |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3239 | if (check->current_step->action == TCPCHK_ACT_EXPECT) { |
| 3240 | expect = &check->current_step->expect; |
| 3241 | goto next_tcpcheck_expect; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3242 | } |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 3243 | |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3244 | continue; |
| 3245 | } |
Baptiste Assmann | 22b09d2 | 2015-05-01 08:03:04 +0200 | [diff] [blame] | 3246 | |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3247 | /* From this point on, we matched something we did not want, this is an error state. */ |
Willy Tarreau | f2c8735 | 2015-05-13 12:08:21 +0200 | [diff] [blame] | 3248 | |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3249 | step = tcpcheck_get_step_id(check); |
| 3250 | diag = match ? "matched unwanted content" : "did not match content"; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3251 | |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3252 | switch (expect->type) { |
| 3253 | case TCPCHK_EXPECT_STRING: |
| 3254 | chunk_printf(&trash, "TCPCHK %s '%s' at step %d", |
| 3255 | diag, expect->string, step); |
| 3256 | break; |
| 3257 | case TCPCHK_EXPECT_BINARY: |
| 3258 | chunk_printf(&trash, "TCPCHK %s (binary) at step %d", |
| 3259 | diag, step); |
| 3260 | break; |
| 3261 | case TCPCHK_EXPECT_REGEX: |
| 3262 | chunk_printf(&trash, "TCPCHK %s (regex) at step %d", |
| 3263 | diag, step); |
| 3264 | break; |
Gaetan Rivet | efab6c6 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3265 | case TCPCHK_EXPECT_REGEX_BINARY: |
| 3266 | chunk_printf(&trash, "TCPCHK %s (binary regex) at step %d", |
| 3267 | diag, step); |
Gaetan Rivet | 9dcb09f | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3268 | |
| 3269 | /* If references to the matched text were made, |
| 3270 | * divide the offsets by 2 to match offset of |
| 3271 | * the original response buffer. |
| 3272 | */ |
| 3273 | if (expect->with_capture) { |
| 3274 | int i; |
| 3275 | |
| 3276 | for (i = 1; i < MAX_MATCH && pmatch[i].rm_so != -1; i++) { |
| 3277 | pmatch[i].rm_so /= 2; /* at first matched char. */ |
| 3278 | pmatch[i].rm_eo /= 2; /* at last matched char. */ |
| 3279 | } |
| 3280 | } |
Gaetan Rivet | efab6c6 | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3281 | break; |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3282 | case TCPCHK_EXPECT_UNDEF: |
| 3283 | /* Should never happen. */ |
| 3284 | retcode = -1; |
| 3285 | goto out; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3286 | } |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3287 | |
Christopher Faulet | 3c29aa6 | 2020-03-24 13:31:19 +0100 | [diff] [blame] | 3288 | comment = tcpcheck_get_step_comment(check); |
Gaetan Rivet | 9dcb09f | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3289 | if (comment) { |
| 3290 | if (expect->with_capture) { |
| 3291 | ret = exp_replace(b_tail(&trash), b_room(&trash), b_head(&check->bi), comment, pmatch); |
| 3292 | if (ret > 0) /* ignore comment if too large */ |
| 3293 | trash.data += ret; |
| 3294 | } |
| 3295 | else |
| 3296 | chunk_appendf(&trash, " comment: '%s'", comment); |
| 3297 | } |
| 3298 | set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area); |
Gaetan Rivet | 9e47fa4 | 2020-02-26 15:59:22 +0100 | [diff] [blame] | 3299 | goto out_end_tcpcheck; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3300 | } /* end expect */ |
| 3301 | } /* end loop over double chained step list */ |
| 3302 | |
Baptiste Assmann | 248f117 | 2018-03-01 21:49:01 +0100 | [diff] [blame] | 3303 | /* don't do anything until the connection is established */ |
Willy Tarreau | 911db9b | 2020-01-23 16:27:54 +0100 | [diff] [blame] | 3304 | if (conn->flags & CO_FL_WAIT_XPRT) { |
Baptiste Assmann | 248f117 | 2018-03-01 21:49:01 +0100 | [diff] [blame] | 3305 | /* update expire time, should be done by process_chk */ |
| 3306 | /* we allow up to min(inter, timeout.connect) for a connection |
| 3307 | * to establish but only when timeout.check is set |
| 3308 | * as it may be to short for a full check otherwise |
| 3309 | */ |
| 3310 | while (tick_is_expired(t->expire, now_ms)) { |
| 3311 | int t_con; |
| 3312 | |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 3313 | t_con = tick_add(t->expire, proxy->timeout.connect); |
Baptiste Assmann | 248f117 | 2018-03-01 21:49:01 +0100 | [diff] [blame] | 3314 | t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter)); |
| 3315 | |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 3316 | if (proxy->timeout.check) |
Baptiste Assmann | 248f117 | 2018-03-01 21:49:01 +0100 | [diff] [blame] | 3317 | t->expire = tick_first(t->expire, t_con); |
| 3318 | } |
| 3319 | goto out; |
| 3320 | } |
| 3321 | |
Willy Tarreau | 263013d | 2015-05-13 11:59:14 +0200 | [diff] [blame] | 3322 | /* We're waiting for some I/O to complete, we've reached the end of the |
| 3323 | * rules, or both. Do what we have to do, otherwise we're done. |
| 3324 | */ |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 3325 | if (check->current_step == NULL && !b_data(&check->bo)) { |
Willy Tarreau | 263013d | 2015-05-13 11:59:14 +0200 | [diff] [blame] | 3326 | set_server_check_status(check, HCHK_STATUS_L7OKD, "(tcp-check)"); |
| 3327 | goto out_end_tcpcheck; |
| 3328 | } |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3329 | |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 3330 | if (check->current_step != NULL && |
Olivier Houchard | 53216e7 | 2018-10-10 15:46:36 +0200 | [diff] [blame] | 3331 | check->current_step->action == TCPCHK_ACT_EXPECT) |
Olivier Houchard | af4021e | 2018-08-09 13:06:55 +0200 | [diff] [blame] | 3332 | __event_srv_chk_r(cs); |
Christopher Faulet | b610285 | 2017-11-28 10:06:29 +0100 | [diff] [blame] | 3333 | goto out; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3334 | |
| 3335 | out_end_tcpcheck: |
| 3336 | /* collect possible new errors */ |
Willy Tarreau | ef91c93 | 2019-07-23 14:37:47 +0200 | [diff] [blame] | 3337 | if ((conn && conn->flags & CO_FL_ERROR) || (cs && cs->flags & CS_FL_ERROR)) |
Willy Tarreau | b5259bf | 2017-10-04 14:47:29 +0200 | [diff] [blame] | 3338 | chk_report_conn_err(check, 0, 0); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3339 | |
Baptiste Assmann | 69e273f | 2013-12-11 00:52:19 +0100 | [diff] [blame] | 3340 | /* cleanup before leaving */ |
Gaetan Rivet | 1d22d7e | 2020-02-14 17:47:08 +0100 | [diff] [blame] | 3341 | check->current_step = check->last_started_step = NULL; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3342 | |
Willy Tarreau | 6aaa1b8 | 2013-12-11 17:09:34 +0100 | [diff] [blame] | 3343 | if (check->result == CHK_RES_FAILED) |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3344 | conn->flags |= CO_FL_ERROR; |
| 3345 | |
Christopher Faulet | b610285 | 2017-11-28 10:06:29 +0100 | [diff] [blame] | 3346 | out: |
Willy Tarreau | 6bdcab0 | 2017-10-04 18:41:00 +0200 | [diff] [blame] | 3347 | return retcode; |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3348 | } |
| 3349 | |
Christopher Faulet | 31c30fd | 2020-03-26 21:10:03 +0100 | [diff] [blame] | 3350 | static const char *init_check(struct check *check, int type) |
Simon Horman | b1900d5 | 2015-01-30 11:22:54 +0900 | [diff] [blame] | 3351 | { |
| 3352 | check->type = type; |
| 3353 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3354 | b_reset(&check->bi); check->bi.size = global.tune.chksize; |
| 3355 | b_reset(&check->bo); check->bo.size = global.tune.chksize; |
Simon Horman | b1900d5 | 2015-01-30 11:22:54 +0900 | [diff] [blame] | 3356 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3357 | check->bi.area = calloc(check->bi.size, sizeof(char)); |
| 3358 | check->bo.area = calloc(check->bo.size, sizeof(char)); |
| 3359 | |
| 3360 | if (!check->bi.area || !check->bo.area) |
Simon Horman | b1900d5 | 2015-01-30 11:22:54 +0900 | [diff] [blame] | 3361 | return "out of memory while allocating check buffer"; |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3362 | |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 3363 | check->wait_list.tasklet = tasklet_new(); |
| 3364 | if (!check->wait_list.tasklet) |
Ilya Shipitsin | d425950 | 2020-04-08 01:07:56 +0500 | [diff] [blame] | 3365 | return "out of memory while allocating check tasklet"; |
Willy Tarreau | 4f6516d | 2018-12-19 13:59:17 +0100 | [diff] [blame] | 3366 | check->wait_list.events = 0; |
Willy Tarreau | 3c39a7d | 2019-06-14 14:42:29 +0200 | [diff] [blame] | 3367 | check->wait_list.tasklet->process = event_srv_chk_io; |
| 3368 | check->wait_list.tasklet->context = check; |
Simon Horman | b1900d5 | 2015-01-30 11:22:54 +0900 | [diff] [blame] | 3369 | return NULL; |
| 3370 | } |
| 3371 | |
Simon Horman | bfb5d33 | 2015-01-30 11:22:55 +0900 | [diff] [blame] | 3372 | void free_check(struct check *check) |
| 3373 | { |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 3374 | task_destroy(check->task); |
| 3375 | if (check->wait_list.tasklet) |
| 3376 | tasklet_free(check->wait_list.tasklet); |
| 3377 | |
Willy Tarreau | c9fa048 | 2018-07-10 17:43:27 +0200 | [diff] [blame] | 3378 | free(check->bi.area); |
| 3379 | free(check->bo.area); |
Christopher Faulet | 23d86d1 | 2018-01-25 11:36:35 +0100 | [diff] [blame] | 3380 | if (check->cs) { |
| 3381 | free(check->cs->conn); |
| 3382 | check->cs->conn = NULL; |
| 3383 | cs_free(check->cs); |
| 3384 | check->cs = NULL; |
| 3385 | } |
Simon Horman | bfb5d33 | 2015-01-30 11:22:55 +0900 | [diff] [blame] | 3386 | } |
| 3387 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3388 | static void free_tcpcheck(struct tcpcheck_rule *rule, int in_pool) |
| 3389 | { |
| 3390 | if (!rule) |
| 3391 | return; |
| 3392 | |
| 3393 | free(rule->comment); |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3394 | switch (rule->action) { |
| 3395 | case TCPCHK_ACT_SEND: |
| 3396 | switch (rule->send.type) { |
| 3397 | case TCPCHK_SEND_STRING: |
| 3398 | case TCPCHK_SEND_BINARY: |
| 3399 | free(rule->send.string); |
| 3400 | break; |
| 3401 | case TCPCHK_SEND_UNDEF: |
| 3402 | break; |
| 3403 | } |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3404 | break; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3405 | case TCPCHK_ACT_EXPECT: |
| 3406 | switch (rule->expect.type) { |
| 3407 | case TCPCHK_EXPECT_STRING: |
| 3408 | case TCPCHK_EXPECT_BINARY: |
| 3409 | free(rule->expect.string); |
| 3410 | break; |
| 3411 | case TCPCHK_EXPECT_REGEX: |
| 3412 | case TCPCHK_EXPECT_REGEX_BINARY: |
| 3413 | regex_free(rule->expect.regex); |
| 3414 | break; |
| 3415 | case TCPCHK_EXPECT_UNDEF: |
| 3416 | break; |
| 3417 | } |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3418 | break; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3419 | case TCPCHK_ACT_CONNECT: |
| 3420 | case TCPCHK_ACT_COMMENT: |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3421 | break; |
| 3422 | } |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3423 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3424 | if (in_pool) |
| 3425 | pool_free(pool_head_tcpcheck_rule, rule); |
| 3426 | else |
| 3427 | free(rule); |
| 3428 | } |
| 3429 | |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3430 | void email_alert_free(struct email_alert *alert) |
| 3431 | { |
| 3432 | struct tcpcheck_rule *rule, *back; |
| 3433 | |
| 3434 | if (!alert) |
| 3435 | return; |
| 3436 | |
Christopher Faulet | de1a75b | 2017-10-23 15:38:19 +0200 | [diff] [blame] | 3437 | list_for_each_entry_safe(rule, back, &alert->tcpcheck_rules, list) { |
| 3438 | LIST_DEL(&rule->list); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3439 | free_tcpcheck(rule, 1); |
Christopher Faulet | de1a75b | 2017-10-23 15:38:19 +0200 | [diff] [blame] | 3440 | } |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3441 | pool_free(pool_head_email_alert, alert); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3442 | } |
| 3443 | |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 3444 | 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] | 3445 | { |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 3446 | struct check *check = context; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3447 | struct email_alertq *q; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3448 | struct email_alert *alert; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3449 | |
| 3450 | q = container_of(check, typeof(*q), check); |
| 3451 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3452 | HA_SPIN_LOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3453 | while (1) { |
| 3454 | if (!(check->state & CHK_ST_ENABLED)) { |
| 3455 | if (LIST_ISEMPTY(&q->email_alerts)) { |
| 3456 | /* All alerts processed, queue the task */ |
| 3457 | t->expire = TICK_ETERNITY; |
| 3458 | task_queue(t); |
Christopher Faulet | c2a89a6 | 2017-10-23 15:54:24 +0200 | [diff] [blame] | 3459 | goto end; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3460 | } |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3461 | |
| 3462 | alert = LIST_NEXT(&q->email_alerts, typeof(alert), list); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3463 | LIST_DEL(&alert->list); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3464 | t->expire = now_ms; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3465 | check->tcpcheck_rules = &alert->tcpcheck_rules; |
Olivier Houchard | 0923fa4 | 2019-01-11 18:43:04 +0100 | [diff] [blame] | 3466 | check->status = HCHK_STATUS_INI; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3467 | check->state |= CHK_ST_ENABLED; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3468 | } |
| 3469 | |
Olivier Houchard | 9f6af33 | 2018-05-25 14:04:04 +0200 | [diff] [blame] | 3470 | process_chk(t, context, state); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3471 | if (check->state & CHK_ST_INPROGRESS) |
| 3472 | break; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3473 | |
| 3474 | alert = container_of(check->tcpcheck_rules, typeof(*alert), tcpcheck_rules); |
| 3475 | email_alert_free(alert); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3476 | check->tcpcheck_rules = NULL; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3477 | check->server = NULL; |
| 3478 | check->state &= ~CHK_ST_ENABLED; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3479 | } |
Christopher Faulet | c2a89a6 | 2017-10-23 15:54:24 +0200 | [diff] [blame] | 3480 | end: |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3481 | HA_SPIN_UNLOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3482 | return t; |
| 3483 | } |
| 3484 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3485 | /* Initializes mailer alerts for the proxy <p> using <mls> parameters. |
| 3486 | * |
| 3487 | * The function returns 1 in success case, otherwise, it returns 0 and err is |
| 3488 | * filled. |
| 3489 | */ |
| 3490 | int init_email_alert(struct mailers *mls, struct proxy *p, char **err) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3491 | { |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3492 | struct mailer *mailer; |
| 3493 | struct email_alertq *queues; |
| 3494 | const char *err_str; |
| 3495 | int i = 0; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3496 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3497 | if ((queues = calloc(mls->count, sizeof(*queues))) == NULL) { |
| 3498 | memprintf(err, "out of memory while allocating mailer alerts queues"); |
mildis | 5ab01cb | 2018-10-02 16:46:34 +0200 | [diff] [blame] | 3499 | goto fail_no_queue; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3500 | } |
| 3501 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3502 | for (mailer = mls->mailer_list; mailer; i++, mailer = mailer->next) { |
| 3503 | struct email_alertq *q = &queues[i]; |
| 3504 | struct check *check = &q->check; |
| 3505 | struct task *t; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3506 | |
| 3507 | LIST_INIT(&q->email_alerts); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3508 | HA_SPIN_INIT(&q->lock); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3509 | check->inter = mls->timeout.mail; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3510 | check->rise = DEF_AGENT_RISETIME; |
Olivier Houchard | c98aa1f | 2019-01-11 18:17:17 +0100 | [diff] [blame] | 3511 | check->proxy = p; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3512 | check->fall = DEF_AGENT_FALLTIME; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3513 | if ((err_str = init_check(check, PR_O2_TCPCHK_CHK))) { |
| 3514 | memprintf(err, "%s", err_str); |
| 3515 | goto error; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3516 | } |
| 3517 | |
| 3518 | check->xprt = mailer->xprt; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3519 | check->addr = mailer->addr; |
Christopher Faulet | b797ae1 | 2018-03-27 15:35:35 +0200 | [diff] [blame] | 3520 | check->port = get_host_port(&mailer->addr); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3521 | |
Emeric Brun | c60def8 | 2017-09-27 14:59:38 +0200 | [diff] [blame] | 3522 | if ((t = task_new(MAX_THREADS_MASK)) == NULL) { |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3523 | memprintf(err, "out of memory while allocating mailer alerts task"); |
| 3524 | goto error; |
| 3525 | } |
| 3526 | |
| 3527 | check->task = t; |
| 3528 | t->process = process_email_alert; |
| 3529 | t->context = check; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3530 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3531 | /* check this in one ms */ |
| 3532 | t->expire = TICK_ETERNITY; |
| 3533 | check->start = now; |
| 3534 | task_queue(t); |
| 3535 | } |
| 3536 | |
| 3537 | mls->users++; |
| 3538 | free(p->email_alert.mailers.name); |
| 3539 | p->email_alert.mailers.m = mls; |
| 3540 | p->email_alert.queues = queues; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3541 | return 0; |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3542 | |
| 3543 | error: |
| 3544 | for (i = 0; i < mls->count; i++) { |
| 3545 | struct email_alertq *q = &queues[i]; |
| 3546 | struct check *check = &q->check; |
| 3547 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3548 | free_check(check); |
| 3549 | } |
| 3550 | free(queues); |
mildis | 5ab01cb | 2018-10-02 16:46:34 +0200 | [diff] [blame] | 3551 | fail_no_queue: |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3552 | return 1; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3553 | } |
| 3554 | |
| 3555 | |
| 3556 | static int add_tcpcheck_expect_str(struct list *list, const char *str) |
| 3557 | { |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3558 | struct tcpcheck_rule *tcpcheck, *prev_check; |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3559 | struct tcpcheck_expect *expect; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3560 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3561 | if ((tcpcheck = pool_alloc(pool_head_tcpcheck_rule)) == NULL) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3562 | return 0; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3563 | memset(tcpcheck, 0, sizeof(*tcpcheck)); |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3564 | tcpcheck->action = TCPCHK_ACT_EXPECT; |
| 3565 | |
| 3566 | expect = &tcpcheck->expect; |
| 3567 | expect->type = TCPCHK_EXPECT_STRING; |
| 3568 | expect->string = strdup(str); |
| 3569 | if (!expect->string) { |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3570 | pool_free(pool_head_tcpcheck_rule, tcpcheck); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3571 | return 0; |
| 3572 | } |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3573 | expect->length = strlen(expect->string); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3574 | |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3575 | /* All tcp-check expect points back to the first inverse expect rule |
| 3576 | * in a chain of one or more expect rule, potentially itself. |
| 3577 | */ |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3578 | tcpcheck->expect.head = tcpcheck; |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3579 | list_for_each_entry_rev(prev_check, list, list) { |
| 3580 | if (prev_check->action == TCPCHK_ACT_EXPECT) { |
Gaetan Rivet | b616add | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3581 | if (prev_check->expect.inverse) |
| 3582 | tcpcheck->expect.head = prev_check; |
Gaetan Rivet | 4038b94 | 2020-02-26 16:19:40 +0100 | [diff] [blame] | 3583 | continue; |
| 3584 | } |
| 3585 | if (prev_check->action != TCPCHK_ACT_COMMENT) |
| 3586 | break; |
| 3587 | } |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3588 | LIST_ADDQ(list, &tcpcheck->list); |
| 3589 | return 1; |
| 3590 | } |
| 3591 | |
| 3592 | static int add_tcpcheck_send_strs(struct list *list, const char * const *strs) |
| 3593 | { |
| 3594 | struct tcpcheck_rule *tcpcheck; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3595 | struct tcpcheck_send *send; |
Willy Tarreau | 64345aa | 2016-08-10 19:29:09 +0200 | [diff] [blame] | 3596 | const char *in; |
| 3597 | char *dst; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3598 | int i; |
| 3599 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3600 | if ((tcpcheck = pool_alloc(pool_head_tcpcheck_rule)) == NULL) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3601 | return 0; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3602 | memset(tcpcheck, 0, sizeof(*tcpcheck)); |
| 3603 | tcpcheck->action = TCPCHK_ACT_SEND; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3604 | |
| 3605 | send = &tcpcheck->send; |
| 3606 | send->type = TCPCHK_SEND_STRING; |
| 3607 | |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3608 | for (i = 0; strs[i]; i++) |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3609 | send->length += strlen(strs[i]); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3610 | |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3611 | send->string = malloc(send->length + 1); |
| 3612 | if (!send->string) { |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3613 | pool_free(pool_head_tcpcheck_rule, tcpcheck); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3614 | return 0; |
| 3615 | } |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3616 | |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3617 | dst = send->string; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3618 | for (i = 0; strs[i]; i++) |
Willy Tarreau | 64345aa | 2016-08-10 19:29:09 +0200 | [diff] [blame] | 3619 | for (in = strs[i]; (*dst = *in++); dst++); |
| 3620 | *dst = 0; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3621 | |
| 3622 | LIST_ADDQ(list, &tcpcheck->list); |
| 3623 | return 1; |
| 3624 | } |
| 3625 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3626 | static int enqueue_one_email_alert(struct proxy *p, struct server *s, |
| 3627 | struct email_alertq *q, const char *msg) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3628 | { |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3629 | struct email_alert *alert; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3630 | struct tcpcheck_rule *tcpcheck; |
| 3631 | struct check *check = &q->check; |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3632 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3633 | if ((alert = pool_alloc(pool_head_email_alert)) == NULL) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3634 | goto error; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3635 | LIST_INIT(&alert->list); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3636 | LIST_INIT(&alert->tcpcheck_rules); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3637 | alert->srv = s; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3638 | |
Willy Tarreau | bafbe01 | 2017-11-24 17:34:44 +0100 | [diff] [blame] | 3639 | if ((tcpcheck = pool_alloc(pool_head_tcpcheck_rule)) == NULL) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3640 | goto error; |
Christopher Faulet | 31dff9b | 2017-10-23 15:45:20 +0200 | [diff] [blame] | 3641 | memset(tcpcheck, 0, sizeof(*tcpcheck)); |
| 3642 | tcpcheck->action = TCPCHK_ACT_CONNECT; |
| 3643 | tcpcheck->comment = NULL; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 3644 | |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3645 | LIST_ADDQ(&alert->tcpcheck_rules, &tcpcheck->list); |
| 3646 | |
| 3647 | if (!add_tcpcheck_expect_str(&alert->tcpcheck_rules, "220 ")) |
| 3648 | goto error; |
| 3649 | |
| 3650 | { |
| 3651 | const char * const strs[4] = { "EHLO ", p->email_alert.myhostname, "\r\n" }; |
| 3652 | if (!add_tcpcheck_send_strs(&alert->tcpcheck_rules, strs)) |
| 3653 | goto error; |
| 3654 | } |
| 3655 | |
| 3656 | if (!add_tcpcheck_expect_str(&alert->tcpcheck_rules, "250 ")) |
| 3657 | goto error; |
| 3658 | |
| 3659 | { |
| 3660 | const char * const strs[4] = { "MAIL FROM:<", p->email_alert.from, ">\r\n" }; |
| 3661 | if (!add_tcpcheck_send_strs(&alert->tcpcheck_rules, strs)) |
| 3662 | goto error; |
| 3663 | } |
| 3664 | |
| 3665 | if (!add_tcpcheck_expect_str(&alert->tcpcheck_rules, "250 ")) |
| 3666 | goto error; |
| 3667 | |
| 3668 | { |
| 3669 | const char * const strs[4] = { "RCPT TO:<", p->email_alert.to, ">\r\n" }; |
| 3670 | if (!add_tcpcheck_send_strs(&alert->tcpcheck_rules, strs)) |
| 3671 | goto error; |
| 3672 | } |
| 3673 | |
| 3674 | if (!add_tcpcheck_expect_str(&alert->tcpcheck_rules, "250 ")) |
| 3675 | goto error; |
| 3676 | |
| 3677 | { |
| 3678 | const char * const strs[2] = { "DATA\r\n" }; |
| 3679 | if (!add_tcpcheck_send_strs(&alert->tcpcheck_rules, strs)) |
| 3680 | goto error; |
| 3681 | } |
| 3682 | |
| 3683 | if (!add_tcpcheck_expect_str(&alert->tcpcheck_rules, "354 ")) |
| 3684 | goto error; |
| 3685 | |
| 3686 | { |
| 3687 | struct tm tm; |
| 3688 | char datestr[48]; |
| 3689 | const char * const strs[18] = { |
Pieter Baauw | 5e0964e | 2016-02-13 16:27:35 +0100 | [diff] [blame] | 3690 | "From: ", p->email_alert.from, "\r\n", |
| 3691 | "To: ", p->email_alert.to, "\r\n", |
| 3692 | "Date: ", datestr, "\r\n", |
| 3693 | "Subject: [HAproxy Alert] ", msg, "\r\n", |
| 3694 | "\r\n", |
| 3695 | msg, "\r\n", |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3696 | "\r\n", |
Pieter Baauw | ed35c37 | 2015-07-22 19:51:54 +0200 | [diff] [blame] | 3697 | ".\r\n", |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3698 | NULL |
| 3699 | }; |
| 3700 | |
| 3701 | get_localtime(date.tv_sec, &tm); |
| 3702 | |
| 3703 | if (strftime(datestr, sizeof(datestr), "%a, %d %b %Y %T %z (%Z)", &tm) == 0) { |
| 3704 | goto error; |
| 3705 | } |
| 3706 | |
| 3707 | if (!add_tcpcheck_send_strs(&alert->tcpcheck_rules, strs)) |
| 3708 | goto error; |
| 3709 | } |
| 3710 | |
| 3711 | if (!add_tcpcheck_expect_str(&alert->tcpcheck_rules, "250 ")) |
| 3712 | goto error; |
| 3713 | |
| 3714 | { |
| 3715 | const char * const strs[2] = { "QUIT\r\n" }; |
| 3716 | if (!add_tcpcheck_send_strs(&alert->tcpcheck_rules, strs)) |
| 3717 | goto error; |
| 3718 | } |
| 3719 | |
| 3720 | if (!add_tcpcheck_expect_str(&alert->tcpcheck_rules, "221 ")) |
| 3721 | goto error; |
| 3722 | |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3723 | HA_SPIN_LOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3724 | task_wakeup(check->task, TASK_WOKEN_MSG); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3725 | LIST_ADDQ(&q->email_alerts, &alert->list); |
Christopher Faulet | 2a944ee | 2017-11-07 10:42:54 +0100 | [diff] [blame] | 3726 | HA_SPIN_UNLOCK(EMAIL_ALERTS_LOCK, &q->lock); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3727 | return 1; |
| 3728 | |
| 3729 | error: |
| 3730 | email_alert_free(alert); |
| 3731 | return 0; |
| 3732 | } |
| 3733 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3734 | 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] | 3735 | { |
| 3736 | int i; |
| 3737 | struct mailer *mailer; |
| 3738 | |
| 3739 | for (i = 0, mailer = p->email_alert.mailers.m->mailer_list; |
| 3740 | i < p->email_alert.mailers.m->count; i++, mailer = mailer->next) { |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3741 | 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] | 3742 | 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] | 3743 | return; |
| 3744 | } |
| 3745 | } |
| 3746 | |
| 3747 | return; |
| 3748 | } |
| 3749 | |
| 3750 | /* |
| 3751 | * Send email alert if configured. |
| 3752 | */ |
Simon Horman | 64e3416 | 2015-02-06 11:11:57 +0900 | [diff] [blame] | 3753 | void send_email_alert(struct server *s, int level, const char *format, ...) |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3754 | { |
| 3755 | va_list argp; |
| 3756 | char buf[1024]; |
| 3757 | int len; |
| 3758 | struct proxy *p = s->proxy; |
| 3759 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3760 | 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] | 3761 | return; |
| 3762 | |
| 3763 | va_start(argp, format); |
| 3764 | len = vsnprintf(buf, sizeof(buf), format, argp); |
| 3765 | va_end(argp); |
| 3766 | |
Thierry FOURNIER | 62c8a21 | 2017-02-09 12:19:27 +0100 | [diff] [blame] | 3767 | if (len < 0 || len >= sizeof(buf)) { |
Christopher Faulet | 767a84b | 2017-11-24 16:50:31 +0100 | [diff] [blame] | 3768 | ha_alert("Email alert [%s] could not format message\n", p->id); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3769 | return; |
| 3770 | } |
| 3771 | |
Christopher Faulet | 0108bb3 | 2017-10-20 21:34:32 +0200 | [diff] [blame] | 3772 | enqueue_email_alert(p, s, buf); |
Simon Horman | 0ba0e4a | 2015-01-30 11:23:00 +0900 | [diff] [blame] | 3773 | } |
| 3774 | |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 3775 | /* |
| 3776 | * Return value: |
| 3777 | * the port to be used for the health check |
| 3778 | * 0 in case no port could be found for the check |
| 3779 | */ |
Christopher Faulet | 31c30fd | 2020-03-26 21:10:03 +0100 | [diff] [blame] | 3780 | static int srv_check_healthcheck_port(struct check *chk) |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 3781 | { |
| 3782 | int i = 0; |
| 3783 | struct server *srv = NULL; |
| 3784 | |
| 3785 | srv = chk->server; |
| 3786 | |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 3787 | /* by default, we use the health check port ocnfigured */ |
| 3788 | if (chk->port > 0) |
| 3789 | return chk->port; |
| 3790 | |
| 3791 | /* try to get the port from check_core.addr if check.port not set */ |
| 3792 | i = get_host_port(&chk->addr); |
| 3793 | if (i > 0) |
| 3794 | return i; |
| 3795 | |
| 3796 | /* try to get the port from server address */ |
| 3797 | /* prevent MAPPORTS from working at this point, since checks could |
| 3798 | * not be performed in such case (MAPPORTS impose a relative ports |
| 3799 | * based on live traffic) |
| 3800 | */ |
| 3801 | if (srv->flags & SRV_F_MAPPORTS) |
| 3802 | return 0; |
Willy Tarreau | 04276f3 | 2017-01-06 17:41:29 +0100 | [diff] [blame] | 3803 | |
| 3804 | i = srv->svc_port; /* by default */ |
Baptiste Assmann | 95db2bc | 2016-06-13 14:15:41 +0200 | [diff] [blame] | 3805 | if (i > 0) |
| 3806 | return i; |
| 3807 | |
| 3808 | return 0; |
| 3809 | } |
| 3810 | |
Willy Tarreau | 172f5ce | 2018-11-26 11:21:50 +0100 | [diff] [blame] | 3811 | REGISTER_POST_CHECK(start_checks); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 3812 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 3813 | static int check_proxy_tcpcheck(struct proxy *px) |
| 3814 | { |
| 3815 | struct tcpcheck_rule *chk; |
| 3816 | int ret = 0; |
| 3817 | |
| 3818 | if (!px->tcpcheck_rules) |
| 3819 | goto out; |
| 3820 | |
| 3821 | /* If there is no connect rule preceeding all send / expect rules, an |
| 3822 | * implicit one is inserted before all others |
| 3823 | */ |
| 3824 | chk = get_first_tcpcheck_rule(px->tcpcheck_rules); |
| 3825 | if (!chk || chk->action != TCPCHK_ACT_CONNECT) { |
| 3826 | chk = calloc(1, sizeof(*chk)); |
| 3827 | if (!chk) { |
| 3828 | ha_alert("config : proxy '%s': unable to add implicit tcp-check connect rule " |
| 3829 | "(out of memory).\n", px->id); |
| 3830 | ret |= ERR_ALERT | ERR_FATAL; |
| 3831 | goto out; |
| 3832 | } |
| 3833 | chk->action = TCPCHK_ACT_CONNECT; |
| 3834 | chk->connect.options = TCPCHK_OPT_DEFAULT_CONNECT; |
| 3835 | LIST_ADD(px->tcpcheck_rules, &chk->list); |
| 3836 | } |
| 3837 | |
| 3838 | out: |
| 3839 | return ret; |
| 3840 | } |
| 3841 | |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 3842 | static int init_srv_check(struct server *srv) |
| 3843 | { |
| 3844 | const char *err; |
| 3845 | struct tcpcheck_rule *r; |
| 3846 | int ret = 0; |
| 3847 | |
| 3848 | if (!srv->do_check) |
| 3849 | goto out; |
| 3850 | |
| 3851 | |
| 3852 | /* If neither a port nor an addr was specified and no check transport |
| 3853 | * layer is forced, then the transport layer used by the checks is the |
| 3854 | * same as for the production traffic. Otherwise we use raw_sock by |
| 3855 | * default, unless one is specified. |
| 3856 | */ |
| 3857 | if (!srv->check.port && !is_addr(&srv->check.addr)) { |
| 3858 | if (!srv->check.use_ssl && srv->use_ssl != -1) { |
| 3859 | srv->check.use_ssl = srv->use_ssl; |
| 3860 | srv->check.xprt = srv->xprt; |
| 3861 | } |
| 3862 | else if (srv->check.use_ssl == 1) |
| 3863 | srv->check.xprt = xprt_get(XPRT_SSL); |
| 3864 | |
| 3865 | srv->check.send_proxy |= (srv->pp_opts); |
| 3866 | } |
| 3867 | |
| 3868 | /* validate <srv> server health-check settings */ |
| 3869 | |
| 3870 | /* We need at least a service port, a check port or the first tcp-check |
| 3871 | * rule must be a 'connect' one when checking an IPv4/IPv6 server. |
| 3872 | */ |
| 3873 | if ((srv_check_healthcheck_port(&srv->check) != 0) || |
| 3874 | (!is_inet_addr(&srv->check.addr) && (is_addr(&srv->check.addr) || !is_inet_addr(&srv->addr)))) |
| 3875 | goto init; |
| 3876 | |
Gaetan Rivet | 04578db | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3877 | if (!srv->proxy->tcpcheck_rules || LIST_ISEMPTY(srv->proxy->tcpcheck_rules)) { |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 3878 | ha_alert("config: %s '%s': server '%s' has neither service port nor check port.\n", |
| 3879 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id); |
| 3880 | ret |= ERR_ALERT | ERR_ABORT; |
| 3881 | goto out; |
| 3882 | } |
| 3883 | |
| 3884 | /* search the first action (connect / send / expect) in the list */ |
Gaetan Rivet | 04578db | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3885 | r = get_first_tcpcheck_rule(srv->proxy->tcpcheck_rules); |
Gaetan Rivet | 06d963a | 2020-02-21 18:49:05 +0100 | [diff] [blame] | 3886 | if (!r || (r->action != TCPCHK_ACT_CONNECT) || !r->connect.port) { |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 3887 | ha_alert("config: %s '%s': server '%s' has neither service port nor check port " |
| 3888 | "nor tcp_check rule 'connect' with port information.\n", |
| 3889 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id); |
| 3890 | ret |= ERR_ALERT | ERR_ABORT; |
| 3891 | goto out; |
| 3892 | } |
| 3893 | |
| 3894 | /* scan the tcp-check ruleset to ensure a port has been configured */ |
Gaetan Rivet | 04578db | 2020-02-07 15:37:17 +0100 | [diff] [blame] | 3895 | list_for_each_entry(r, srv->proxy->tcpcheck_rules, list) { |
Gaetan Rivet | 06d963a | 2020-02-21 18:49:05 +0100 | [diff] [blame] | 3896 | if ((r->action == TCPCHK_ACT_CONNECT) && (!r->connect.port)) { |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 3897 | ha_alert("config: %s '%s': server '%s' has neither service port nor check port, " |
| 3898 | "and a tcp_check rule 'connect' with no port information.\n", |
| 3899 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id); |
| 3900 | ret |= ERR_ALERT | ERR_ABORT; |
| 3901 | goto out; |
| 3902 | } |
| 3903 | } |
| 3904 | |
| 3905 | init: |
| 3906 | err = init_check(&srv->check, srv->proxy->options2 & PR_O2_CHK_ANY); |
| 3907 | if (err) { |
| 3908 | ha_alert("config: %s '%s': unable to init check for server '%s' (%s).\n", |
| 3909 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id, err); |
| 3910 | ret |= ERR_ALERT | ERR_ABORT; |
| 3911 | goto out; |
| 3912 | } |
| 3913 | srv->check.state |= CHK_ST_CONFIGURED | CHK_ST_ENABLED; |
| 3914 | global.maxsock++; |
| 3915 | |
| 3916 | out: |
| 3917 | return ret; |
| 3918 | } |
| 3919 | |
| 3920 | static int init_srv_agent_check(struct server *srv) |
| 3921 | { |
| 3922 | const char *err; |
| 3923 | int ret = 0; |
| 3924 | |
| 3925 | if (!srv->do_agent) |
| 3926 | goto out; |
| 3927 | |
| 3928 | err = init_check(&srv->agent, PR_O2_LB_AGENT_CHK); |
| 3929 | if (err) { |
| 3930 | ha_alert("config: %s '%s': unable to init agent-check for server '%s' (%s).\n", |
| 3931 | proxy_type_str(srv->proxy), srv->proxy->id, srv->id, err); |
| 3932 | ret |= ERR_ALERT | ERR_ABORT; |
| 3933 | goto out; |
| 3934 | } |
| 3935 | |
| 3936 | if (!srv->agent.inter) |
| 3937 | srv->agent.inter = srv->check.inter; |
| 3938 | |
| 3939 | srv->agent.state |= CHK_ST_CONFIGURED | CHK_ST_ENABLED | CHK_ST_AGENT; |
| 3940 | global.maxsock++; |
| 3941 | |
| 3942 | out: |
| 3943 | return ret; |
| 3944 | } |
| 3945 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3946 | static void deinit_proxy_tcpcheck(struct proxy *px) |
| 3947 | { |
| 3948 | struct tcpcheck_rule *chk, *back; |
| 3949 | |
| 3950 | if (!px->tcpcheck_rules) |
| 3951 | return; |
| 3952 | |
| 3953 | list_for_each_entry_safe(chk, back, px->tcpcheck_rules, list) { |
| 3954 | LIST_DEL(&chk->list); |
| 3955 | free_tcpcheck(chk, 0); |
| 3956 | } |
| 3957 | free(px->tcpcheck_rules); |
| 3958 | px->tcpcheck_rules = NULL; |
| 3959 | } |
| 3960 | |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 3961 | static void deinit_srv_check(struct server *srv) |
| 3962 | { |
| 3963 | if (srv->do_check) |
| 3964 | free_check(&srv->check); |
| 3965 | } |
| 3966 | |
| 3967 | |
| 3968 | static void deinit_srv_agent_check(struct server *srv) |
| 3969 | { |
| 3970 | if (srv->do_agent) |
| 3971 | free_check(&srv->agent); |
| 3972 | free(srv->agent.send_string); |
| 3973 | } |
| 3974 | |
Christopher Faulet | a202d1d | 2020-03-26 17:38:49 +0100 | [diff] [blame^] | 3975 | |
| 3976 | REGISTER_POST_PROXY_CHECK(check_proxy_tcpcheck); |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 3977 | REGISTER_POST_SERVER_CHECK(init_srv_check); |
| 3978 | REGISTER_POST_SERVER_CHECK(init_srv_agent_check); |
| 3979 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3980 | REGISTER_PROXY_DEINIT(deinit_proxy_tcpcheck); |
Christopher Faulet | 8892e5d | 2020-03-26 19:48:20 +0100 | [diff] [blame] | 3981 | REGISTER_SERVER_DEINIT(deinit_srv_check); |
| 3982 | REGISTER_SERVER_DEINIT(deinit_srv_agent_check); |
| 3983 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 3984 | static struct tcpcheck_rule *parse_tcpcheck_connect(char **args, int cur_arg, struct proxy *px, struct list *rules, |
| 3985 | char **errmsg) |
| 3986 | { |
| 3987 | struct tcpcheck_rule *chk = NULL; |
| 3988 | char *comment = NULL; |
| 3989 | unsigned short conn_opts = 0; |
| 3990 | long port = 0; |
| 3991 | |
| 3992 | list_for_each_entry(chk, rules, list) { |
| 3993 | if (chk->action != TCPCHK_ACT_COMMENT) |
| 3994 | break; |
| 3995 | } |
| 3996 | if (&chk->list != rules && chk->action != TCPCHK_ACT_CONNECT) { |
| 3997 | memprintf(errmsg, "first step MUST also be a 'connect' when there is a 'connect' step in the tcp-check ruleset"); |
| 3998 | goto error; |
| 3999 | } |
| 4000 | |
| 4001 | cur_arg++; |
| 4002 | while (*(args[cur_arg])) { |
| 4003 | if (strcmp(args[cur_arg], "port") == 0) { |
| 4004 | if (!*(args[cur_arg+1])) { |
| 4005 | memprintf(errmsg, "'%s' expects a port number as argument.", args[cur_arg]); |
| 4006 | goto error; |
| 4007 | } |
| 4008 | cur_arg++; |
| 4009 | port = atol(args[cur_arg]); |
| 4010 | if (port > 65535 || port < 1) { |
| 4011 | memprintf(errmsg, "expects a valid TCP port (from range 1 to 65535), got %s.", args[cur_arg]); |
| 4012 | goto error; |
| 4013 | } |
| 4014 | } |
| 4015 | else if (strcmp(args[cur_arg], "comment") == 0) { |
| 4016 | if (!*(args[cur_arg+1])) { |
| 4017 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 4018 | goto error; |
| 4019 | } |
| 4020 | cur_arg++; |
| 4021 | free(comment); |
| 4022 | comment = strdup(args[cur_arg]); |
| 4023 | if (!comment) { |
| 4024 | memprintf(errmsg, "out of memory"); |
| 4025 | goto error; |
| 4026 | } |
| 4027 | } |
| 4028 | else if (strcmp(args[cur_arg], "send-proxy") == 0) |
| 4029 | conn_opts |= TCPCHK_OPT_SEND_PROXY; |
| 4030 | else if (strcmp(args[cur_arg], "linger") == 0) |
| 4031 | conn_opts |= TCPCHK_OPT_LINGER; |
| 4032 | #ifdef USE_OPENSSL |
| 4033 | else if (strcmp(args[cur_arg], "ssl") == 0) { |
| 4034 | px->options |= PR_O_TCPCHK_SSL; |
| 4035 | conn_opts |= TCPCHK_OPT_SSL; |
| 4036 | } |
| 4037 | #endif /* USE_OPENSSL */ |
| 4038 | |
| 4039 | else { |
| 4040 | memprintf(errmsg, "expects 'comment', 'port', 'send-proxy'" |
| 4041 | #ifdef USE_OPENSSL |
| 4042 | ", 'ssl'" |
| 4043 | #endif /* USE_OPENSSL */ |
| 4044 | " or 'linger' but got '%s' as argument.", |
| 4045 | args[cur_arg]); |
| 4046 | goto error; |
| 4047 | } |
| 4048 | cur_arg++; |
| 4049 | } |
| 4050 | |
| 4051 | chk = calloc(1, sizeof(*chk)); |
| 4052 | if (!chk) { |
| 4053 | memprintf(errmsg, "out of memory"); |
| 4054 | goto error; |
| 4055 | } |
Gaetan Rivet | 06d963a | 2020-02-21 18:49:05 +0100 | [diff] [blame] | 4056 | chk->action = TCPCHK_ACT_CONNECT; |
| 4057 | chk->comment = comment; |
| 4058 | chk->connect.port = port; |
| 4059 | chk->connect.options = conn_opts; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4060 | return chk; |
| 4061 | |
| 4062 | error: |
| 4063 | free(comment); |
| 4064 | return NULL; |
| 4065 | } |
| 4066 | |
| 4067 | static struct tcpcheck_rule *parse_tcpcheck_send(char **args, int cur_arg, struct list *rules, char **errmsg) |
| 4068 | { |
| 4069 | struct tcpcheck_rule *chk = NULL; |
| 4070 | char *str = NULL, *comment = NULL; |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 4071 | enum tcpcheck_send_type type = TCPCHK_SEND_UNDEF; |
| 4072 | int len; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4073 | |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 4074 | 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] | 4075 | if (!*(args[cur_arg+1])) { |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 4076 | memprintf(errmsg, "'%s' expects a %s as argument", |
| 4077 | (type == TCPCHK_SEND_BINARY ? "binary string": "string"), args[cur_arg]); |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4078 | goto error; |
| 4079 | } |
| 4080 | |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 4081 | if (type == TCPCHK_SEND_BINARY) { |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4082 | if (parse_binary(args[cur_arg+1], &str, &len, errmsg) == 0) { |
| 4083 | memprintf(errmsg, "'%s' invalid binary string (%s).\n", args[cur_arg], *errmsg); |
| 4084 | goto error; |
| 4085 | } |
| 4086 | } |
| 4087 | else { |
| 4088 | str = strdup(args[cur_arg+1]); |
| 4089 | len = strlen(args[cur_arg+1]); |
| 4090 | if (!str) { |
| 4091 | memprintf(errmsg, "out of memory"); |
| 4092 | goto error; |
| 4093 | } |
| 4094 | } |
| 4095 | cur_arg++; |
| 4096 | |
| 4097 | if (strcmp(args[cur_arg], "comment") == 0) { |
| 4098 | if (!*(args[cur_arg+1])) { |
| 4099 | memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]); |
| 4100 | goto error; |
| 4101 | } |
| 4102 | cur_arg++; |
| 4103 | comment = strdup(args[cur_arg]); |
| 4104 | if (!comment) { |
| 4105 | memprintf(errmsg, "out of memory"); |
| 4106 | goto error; |
| 4107 | } |
| 4108 | } |
| 4109 | |
| 4110 | chk = calloc(1, sizeof(*chk)); |
| 4111 | if (!chk) { |
| 4112 | memprintf(errmsg, "out of memory"); |
| 4113 | goto error; |
| 4114 | } |
Gaetan Rivet | 48219dc | 2020-02-21 18:41:28 +0100 | [diff] [blame] | 4115 | chk->action = TCPCHK_ACT_SEND; |
| 4116 | chk->comment = comment; |
| 4117 | chk->send.type = type; |
| 4118 | chk->send.string = str; |
| 4119 | chk->send.length = len; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4120 | return chk; |
| 4121 | |
| 4122 | error: |
| 4123 | free(str); |
| 4124 | free(comment); |
| 4125 | return NULL; |
| 4126 | } |
| 4127 | |
| 4128 | static struct tcpcheck_rule *parse_tcpcheck_comment(char **args, int cur_arg, struct list *rules, char **errmsg) |
| 4129 | { |
| 4130 | struct tcpcheck_rule *chk = NULL; |
| 4131 | char *comment = NULL; |
| 4132 | |
| 4133 | if (!*(args[cur_arg+1])) { |
| 4134 | memprintf(errmsg, "expects a string as argument"); |
| 4135 | goto error; |
| 4136 | } |
| 4137 | cur_arg++; |
| 4138 | comment = strdup(args[cur_arg]); |
| 4139 | if (!comment) { |
| 4140 | memprintf(errmsg, "out of memory"); |
| 4141 | goto error; |
| 4142 | } |
| 4143 | |
| 4144 | chk = calloc(1, sizeof(*chk)); |
| 4145 | if (!chk) { |
| 4146 | memprintf(errmsg, "out of memory"); |
| 4147 | goto error; |
| 4148 | } |
| 4149 | chk->action = TCPCHK_ACT_COMMENT; |
| 4150 | chk->comment = comment; |
| 4151 | return chk; |
| 4152 | |
| 4153 | error: |
| 4154 | free(comment); |
| 4155 | return NULL; |
| 4156 | } |
| 4157 | |
| 4158 | static struct tcpcheck_rule *parse_tcpcheck_expect(char **args, int cur_arg, struct list *rules, char **errmsg) |
| 4159 | { |
| 4160 | struct tcpcheck_rule *prev_check, *chk = NULL; |
| 4161 | char *str = NULL, *comment = NULL, *pattern = NULL; |
| 4162 | enum tcpcheck_expect_type type = TCPCHK_EXPECT_UNDEF; |
| 4163 | long min_recv = -1; |
| 4164 | int inverse = 0, with_capture = 0; |
| 4165 | |
| 4166 | if (!*(args[cur_arg+1]) || !*(args[cur_arg+2])) { |
| 4167 | memprintf(errmsg, "expects a pattern (type+string) as arguments"); |
| 4168 | goto error; |
| 4169 | } |
| 4170 | |
| 4171 | cur_arg++; |
| 4172 | while (*(args[cur_arg])) { |
| 4173 | int in_pattern = 0; |
| 4174 | |
| 4175 | rescan: |
| 4176 | if (strcmp(args[cur_arg], "min-recv") == 0) { |
| 4177 | if (in_pattern) { |
| 4178 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 4179 | goto error; |
| 4180 | } |
| 4181 | if (!*(args[cur_arg+1])) { |
| 4182 | memprintf(errmsg, "'%s' expects a integer as argument", args[cur_arg]); |
| 4183 | goto error; |
| 4184 | } |
| 4185 | /* Use an signed integer here because of chksize */ |
| 4186 | cur_arg++; |
| 4187 | min_recv = atol(args[cur_arg]); |
| 4188 | if (min_recv < -1 || min_recv > INT_MAX) { |
| 4189 | memprintf(errmsg, "'%s' expects -1 or an integer from 0 to INT_MAX" , args[cur_arg-1]); |
| 4190 | goto error; |
| 4191 | } |
| 4192 | } |
| 4193 | else if (*(args[cur_arg]) == '!') { |
| 4194 | in_pattern = 1; |
| 4195 | while (*(args[cur_arg]) == '!') { |
| 4196 | inverse = !inverse; |
| 4197 | args[cur_arg]++; |
| 4198 | } |
| 4199 | if (!*(args[cur_arg])) |
| 4200 | cur_arg++; |
| 4201 | goto rescan; |
| 4202 | } |
| 4203 | else if (strcmp(args[cur_arg], "string") == 0 || strcmp(args[cur_arg], "binary") == 0 || |
| 4204 | strcmp(args[cur_arg], "rstring") == 0 || strcmp(args[cur_arg], "rbinary") == 0) { |
| 4205 | if (type != TCPCHK_EXPECT_UNDEF) { |
| 4206 | memprintf(errmsg, "only on pattern expected"); |
| 4207 | goto error; |
| 4208 | } |
| 4209 | type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_STRING : |
| 4210 | ((*(args[cur_arg]) == 'b') ? TCPCHK_EXPECT_BINARY : |
| 4211 | ((*(args[cur_arg]+1) == 's') ? TCPCHK_EXPECT_REGEX : TCPCHK_EXPECT_REGEX_BINARY))); |
| 4212 | |
| 4213 | if (!*(args[cur_arg+1])) { |
| 4214 | memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]); |
| 4215 | goto error; |
| 4216 | } |
| 4217 | cur_arg++; |
| 4218 | pattern = args[cur_arg]; |
| 4219 | } |
| 4220 | else if (strcmp(args[cur_arg], "comment") == 0) { |
| 4221 | if (in_pattern) { |
| 4222 | memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]); |
| 4223 | goto error; |
| 4224 | } |
| 4225 | if (!*(args[cur_arg+1])) { |
| 4226 | memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]); |
| 4227 | goto error; |
| 4228 | } |
| 4229 | cur_arg++; |
| 4230 | free(comment); |
| 4231 | comment = strdup(args[cur_arg]); |
| 4232 | if (!comment) { |
| 4233 | memprintf(errmsg, "out of memory"); |
| 4234 | goto error; |
| 4235 | } |
| 4236 | } |
| 4237 | else { |
| 4238 | memprintf(errmsg, "'only supports min-recv, '[!]binary', '[!]string', '[!]rstring', '[!]rbinary'" |
| 4239 | " or comment but got '%s' as argument.", args[cur_arg]); |
| 4240 | goto error; |
| 4241 | } |
| 4242 | |
| 4243 | cur_arg++; |
| 4244 | } |
| 4245 | |
| 4246 | if (comment) { |
| 4247 | char *p = comment; |
| 4248 | |
| 4249 | while (*p) { |
| 4250 | if (*p == '\\') { |
| 4251 | p++; |
| 4252 | if (!*p || !isdigit((unsigned char)*p) || |
| 4253 | (*p == 'x' && (!*(p+1) || !*(p+2) || !ishex(*(p+1)) || !ishex(*(p+2))))) { |
| 4254 | memprintf(errmsg, "invalid backreference in 'comment' argument"); |
| 4255 | goto error; |
| 4256 | } |
| 4257 | with_capture = 1; |
| 4258 | } |
| 4259 | p++; |
| 4260 | } |
| 4261 | if (with_capture && !inverse) |
| 4262 | memprintf(errmsg, "using backreference in a positive expect comment is useless"); |
| 4263 | } |
| 4264 | |
| 4265 | chk = calloc(1, sizeof(*chk)); |
| 4266 | if (!chk) { |
| 4267 | memprintf(errmsg, "out of memory"); |
| 4268 | goto error; |
| 4269 | } |
| 4270 | chk->action = TCPCHK_ACT_EXPECT; |
| 4271 | chk->comment = comment; |
| 4272 | chk->expect.type = type; |
| 4273 | chk->expect.min_recv = min_recv; |
| 4274 | chk->expect.inverse = inverse; |
| 4275 | chk->expect.with_capture = with_capture; |
| 4276 | |
| 4277 | switch (chk->expect.type) { |
| 4278 | case TCPCHK_EXPECT_STRING: |
| 4279 | chk->expect.string = strdup(pattern); |
| 4280 | chk->expect.length = strlen(pattern); |
| 4281 | if (!chk->expect.string) { |
| 4282 | memprintf(errmsg, "out of memory"); |
| 4283 | goto error; |
| 4284 | } |
| 4285 | break; |
| 4286 | case TCPCHK_EXPECT_BINARY: |
| 4287 | if (parse_binary(pattern, &chk->expect.string, &chk->expect.length, errmsg) == 0) { |
| 4288 | memprintf(errmsg, "invalid binary string (%s)", *errmsg); |
| 4289 | goto error; |
| 4290 | } |
| 4291 | case TCPCHK_EXPECT_REGEX: |
| 4292 | case TCPCHK_EXPECT_REGEX_BINARY: |
| 4293 | chk->expect.regex = regex_comp(pattern, 1, with_capture, errmsg); |
| 4294 | if (!chk->expect.regex) |
| 4295 | goto error; |
| 4296 | break; |
| 4297 | case TCPCHK_EXPECT_UNDEF: |
| 4298 | free(chk); |
| 4299 | memprintf(errmsg, "pattern not found"); |
| 4300 | goto error; |
| 4301 | } |
| 4302 | |
| 4303 | /* All tcp-check expect points back to the first inverse expect rule in |
| 4304 | * a chain of one or more expect rule, potentially itself. |
| 4305 | */ |
| 4306 | chk->expect.head = chk; |
| 4307 | list_for_each_entry_rev(prev_check, rules, list) { |
| 4308 | if (prev_check->action == TCPCHK_ACT_EXPECT) { |
| 4309 | if (prev_check->expect.inverse) |
| 4310 | chk->expect.head = prev_check; |
| 4311 | continue; |
| 4312 | } |
| 4313 | if (prev_check->action != TCPCHK_ACT_COMMENT) |
| 4314 | break; |
| 4315 | } |
| 4316 | return chk; |
| 4317 | |
| 4318 | error: |
| 4319 | free(chk); |
| 4320 | free(str); |
| 4321 | free(comment); |
| 4322 | return NULL; |
| 4323 | } |
| 4324 | |
| 4325 | /* Parses the "tcp-check" proxy keyword */ |
| 4326 | static int proxy_parse_tcpcheck(char **args, int section, struct proxy *curpx, |
| 4327 | struct proxy *defpx, const char *file, int line, |
| 4328 | char **errmsg) |
| 4329 | { |
| 4330 | struct list *rules = curpx->tcpcheck_rules; |
| 4331 | struct tcpcheck_rule *chk = NULL; |
Gaetan Rivet | 5301b01 | 2020-02-25 17:19:17 +0100 | [diff] [blame] | 4332 | int index, cur_arg, ret = 0; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4333 | |
| 4334 | if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[0], NULL)) |
| 4335 | ret = 1; |
| 4336 | |
| 4337 | if (curpx == defpx) { |
| 4338 | memprintf(errmsg, "'%s' not allowed in 'defaults' section.", args[0]); |
| 4339 | goto error; |
| 4340 | } |
| 4341 | |
| 4342 | if (!rules) { |
| 4343 | rules = calloc(1, sizeof(*rules)); |
| 4344 | if (!rules) { |
| 4345 | memprintf(errmsg, "%s : out of memory.", args[0]); |
| 4346 | goto error; |
| 4347 | } |
| 4348 | LIST_INIT(rules); |
| 4349 | curpx->tcpcheck_rules = rules; |
| 4350 | } |
| 4351 | |
Gaetan Rivet | 5301b01 | 2020-02-25 17:19:17 +0100 | [diff] [blame] | 4352 | index = 0; |
| 4353 | if (!LIST_ISEMPTY(rules)) { |
| 4354 | chk = LIST_PREV(rules, typeof(chk), list); |
| 4355 | index = chk->index + 1; |
| 4356 | } |
| 4357 | |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4358 | cur_arg = 1; |
| 4359 | if (strcmp(args[cur_arg], "connect") == 0) |
| 4360 | chk = parse_tcpcheck_connect(args, cur_arg, curpx, rules, errmsg); |
| 4361 | else if (strcmp(args[cur_arg], "send") == 0 || strcmp(args[cur_arg], "send-binary") == 0) |
| 4362 | chk = parse_tcpcheck_send(args, cur_arg, rules, errmsg); |
| 4363 | else if (strcmp(args[cur_arg], "expect") == 0) |
| 4364 | chk = parse_tcpcheck_expect(args, cur_arg, rules, errmsg); |
| 4365 | else if (strcmp(args[cur_arg], "comment") == 0) |
| 4366 | chk = parse_tcpcheck_comment(args, cur_arg, rules, errmsg); |
| 4367 | else { |
| 4368 | memprintf(errmsg, "'%s %s' only supports 'comment', 'connect', 'send', 'send-binary' or 'expect'.", |
| 4369 | args[0], args[1]); |
| 4370 | goto error; |
| 4371 | } |
| 4372 | |
| 4373 | if (!chk) { |
| 4374 | memprintf(errmsg, "'%s %s' : %s.", args[0], args[1], *errmsg); |
| 4375 | goto error; |
| 4376 | } |
| 4377 | ret = (*errmsg != NULL); /* Handle warning */ |
| 4378 | |
| 4379 | /* No error: add the tcp-check rule in the list */ |
Gaetan Rivet | 5301b01 | 2020-02-25 17:19:17 +0100 | [diff] [blame] | 4380 | chk->index = index; |
Christopher Faulet | fd6c229 | 2020-03-25 18:20:15 +0100 | [diff] [blame] | 4381 | LIST_ADDQ(rules, &chk->list); |
| 4382 | return ret; |
| 4383 | |
| 4384 | error: |
| 4385 | if (rules) |
| 4386 | deinit_proxy_tcpcheck(curpx); |
| 4387 | return -1; |
| 4388 | } |
| 4389 | |
| 4390 | static struct cfg_kw_list cfg_kws = {ILH, { |
| 4391 | { CFG_LISTEN, "tcp-check", proxy_parse_tcpcheck }, |
| 4392 | { 0, NULL, NULL }, |
| 4393 | }}; |
| 4394 | |
| 4395 | INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws); |
| 4396 | |
Willy Tarreau | bd74154 | 2010-03-16 18:46:54 +0100 | [diff] [blame] | 4397 | /* |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 4398 | * Local variables: |
| 4399 | * c-indent-level: 8 |
| 4400 | * c-basic-offset: 8 |
| 4401 | * End: |
| 4402 | */ |