Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Proxy variables and functions. |
| 3 | * |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 4 | * Copyright 2000-2009 Willy Tarreau <w@1wt.eu> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <fcntl.h> |
| 14 | #include <unistd.h> |
Willy Tarreau | c8f24f8 | 2007-11-30 18:38:35 +0100 | [diff] [blame] | 15 | #include <string.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 16 | #include <sys/types.h> |
| 17 | #include <sys/socket.h> |
| 18 | #include <sys/stat.h> |
| 19 | |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 20 | #include <common/defaults.h> |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 21 | #include <common/cfgparse.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 22 | #include <common/compat.h> |
Willy Tarreau | e3ba5f0 | 2006-06-29 18:54:54 +0200 | [diff] [blame] | 23 | #include <common/config.h> |
Willy Tarreau | d740bab | 2007-10-28 11:14:07 +0100 | [diff] [blame] | 24 | #include <common/errors.h> |
Willy Tarreau | 4d2d098 | 2007-05-14 00:39:29 +0200 | [diff] [blame] | 25 | #include <common/memory.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 26 | #include <common/time.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 27 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 28 | #include <eb32tree.h> |
| 29 | #include <ebistree.h> |
| 30 | |
Thierry FOURNIER | a0a1b75 | 2015-05-26 17:44:32 +0200 | [diff] [blame] | 31 | #include <types/capture.h> |
Willy Tarreau | 960f2cb | 2016-11-24 12:02:29 +0100 | [diff] [blame] | 32 | #include <types/cli.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 33 | #include <types/global.h> |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 34 | #include <types/obj_type.h> |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 35 | #include <types/peers.h> |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 36 | #include <types/stats.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 37 | |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 38 | #include <proto/applet.h> |
| 39 | #include <proto/cli.h> |
Alexandre Cassen | 87ea548 | 2007-10-11 20:48:58 +0200 | [diff] [blame] | 40 | #include <proto/backend.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 41 | #include <proto/fd.h> |
Christopher Faulet | d7c9196 | 2015-04-30 11:48:27 +0200 | [diff] [blame] | 42 | #include <proto/filters.h> |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 43 | #include <proto/hdr_idx.h> |
Willy Tarreau | d1d5454 | 2012-09-12 22:58:11 +0200 | [diff] [blame] | 44 | #include <proto/listener.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 45 | #include <proto/log.h> |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 46 | #include <proto/proto_tcp.h> |
Willy Tarreau | 39e4f62 | 2010-05-31 17:01:36 +0200 | [diff] [blame] | 47 | #include <proto/proto_http.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 48 | #include <proto/proxy.h> |
Olivier Houchard | 614f8d7 | 2017-03-14 20:08:46 +0100 | [diff] [blame] | 49 | #include <proto/server.h> |
Willy Tarreau | d0807c3 | 2010-08-27 18:26:11 +0200 | [diff] [blame] | 50 | #include <proto/signal.h> |
Willy Tarreau | fb0afa7 | 2015-04-03 14:46:27 +0200 | [diff] [blame] | 51 | #include <proto/stream.h> |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 52 | #include <proto/stream_interface.h> |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 53 | #include <proto/task.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 54 | |
| 55 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 56 | int listeners; /* # of proxy listeners, set by cfgparse */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 57 | struct proxy *proxy = NULL; /* list of all existing proxies */ |
Willy Tarreau | 53fb4ae | 2009-10-04 23:04:08 +0200 | [diff] [blame] | 58 | struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */ |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 59 | struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */ |
Willy Tarreau | 10479e4 | 2010-12-12 14:00:34 +0100 | [diff] [blame] | 60 | unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 61 | |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 62 | /* |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 63 | * This function returns a string containing a name describing capabilities to |
| 64 | * report comprehensible error messages. Specifically, it will return the words |
Christopher Faulet | 898566e | 2016-10-26 11:06:28 +0200 | [diff] [blame] | 65 | * "frontend", "backend" when appropriate, or "proxy" for all other |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 66 | * cases including the proxies declared in "listen" mode. |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 67 | */ |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 68 | const char *proxy_cap_str(int cap) |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 69 | { |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 70 | if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) { |
| 71 | if (cap & PR_CAP_FE) |
| 72 | return "frontend"; |
| 73 | else if (cap & PR_CAP_BE) |
| 74 | return "backend"; |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 75 | } |
| 76 | return "proxy"; |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 77 | } |
| 78 | |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 79 | /* |
| 80 | * This function returns a string containing the mode of the proxy in a format |
| 81 | * suitable for error messages. |
| 82 | */ |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 83 | const char *proxy_mode_str(int mode) { |
| 84 | |
| 85 | if (mode == PR_MODE_TCP) |
| 86 | return "tcp"; |
| 87 | else if (mode == PR_MODE_HTTP) |
| 88 | return "http"; |
| 89 | else if (mode == PR_MODE_HEALTH) |
| 90 | return "health"; |
| 91 | else |
| 92 | return "unknown"; |
| 93 | } |
| 94 | |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 95 | /* |
| 96 | * This function scans the list of backends and servers to retrieve the first |
| 97 | * backend and the first server with the given names, and sets them in both |
| 98 | * parameters. It returns zero if either is not found, or non-zero and sets |
| 99 | * the ones it did not found to NULL. If a NULL pointer is passed for the |
| 100 | * backend, only the pointer to the server will be updated. |
| 101 | */ |
| 102 | int get_backend_server(const char *bk_name, const char *sv_name, |
| 103 | struct proxy **bk, struct server **sv) |
| 104 | { |
| 105 | struct proxy *p; |
| 106 | struct server *s; |
Willy Tarreau | 7ecc420 | 2014-03-15 07:57:11 +0100 | [diff] [blame] | 107 | int sid; |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 108 | |
| 109 | *sv = NULL; |
| 110 | |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 111 | sid = -1; |
Willy Tarreau | cfeaa47 | 2009-10-10 22:33:08 +0200 | [diff] [blame] | 112 | if (*sv_name == '#') |
| 113 | sid = atoi(sv_name + 1); |
| 114 | |
Willy Tarreau | 9e0bb10 | 2015-05-26 11:24:42 +0200 | [diff] [blame] | 115 | p = proxy_be_by_name(bk_name); |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 116 | if (bk) |
| 117 | *bk = p; |
| 118 | if (!p) |
| 119 | return 0; |
| 120 | |
| 121 | for (s = p->srv; s; s = s->next) |
Willy Tarreau | 4055a10 | 2012-11-15 00:15:18 +0100 | [diff] [blame] | 122 | if ((sid >= 0 && s->puid == sid) || |
| 123 | (sid < 0 && strcmp(s->id, sv_name) == 0)) |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 124 | break; |
| 125 | *sv = s; |
| 126 | if (!s) |
| 127 | return 0; |
| 128 | return 1; |
| 129 | } |
| 130 | |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 131 | /* This function parses a "timeout" statement in a proxy section. It returns |
| 132 | * -1 if there is any error, 1 for a warning, otherwise zero. If it does not |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 133 | * return zero, it will write an error or warning message into a preallocated |
| 134 | * buffer returned at <err>. The trailing is not be written. The function must |
| 135 | * be called with <args> pointing to the first command line word, with <proxy> |
| 136 | * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL. |
| 137 | * As a special case for compatibility with older configs, it also accepts |
| 138 | * "{cli|srv|con}timeout" in args[0]. |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 139 | */ |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 140 | static int proxy_parse_timeout(char **args, int section, struct proxy *proxy, |
Willy Tarreau | 28a47d6 | 2012-09-18 20:02:48 +0200 | [diff] [blame] | 141 | struct proxy *defpx, const char *file, int line, |
| 142 | char **err) |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 143 | { |
| 144 | unsigned timeout; |
| 145 | int retval, cap; |
| 146 | const char *res, *name; |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 147 | int *tv = NULL; |
| 148 | int *td = NULL; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 149 | int warn = 0; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 150 | |
| 151 | retval = 0; |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 152 | |
| 153 | /* simply skip "timeout" but remain compatible with old form */ |
| 154 | if (strcmp(args[0], "timeout") == 0) |
| 155 | args++; |
| 156 | |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 157 | name = args[0]; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 158 | if (!strcmp(args[0], "client") || (!strcmp(args[0], "clitimeout") && (warn = WARN_CLITO_DEPRECATED))) { |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 159 | name = "client"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 160 | tv = &proxy->timeout.client; |
| 161 | td = &defpx->timeout.client; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 162 | cap = PR_CAP_FE; |
| 163 | } else if (!strcmp(args[0], "tarpit")) { |
| 164 | tv = &proxy->timeout.tarpit; |
| 165 | td = &defpx->timeout.tarpit; |
Willy Tarreau | 51c9bde | 2008-01-06 13:40:03 +0100 | [diff] [blame] | 166 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | b16a574 | 2010-01-10 14:46:16 +0100 | [diff] [blame] | 167 | } else if (!strcmp(args[0], "http-keep-alive")) { |
| 168 | tv = &proxy->timeout.httpka; |
| 169 | td = &defpx->timeout.httpka; |
| 170 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | 036fae0 | 2008-01-06 13:24:40 +0100 | [diff] [blame] | 171 | } else if (!strcmp(args[0], "http-request")) { |
| 172 | tv = &proxy->timeout.httpreq; |
| 173 | td = &defpx->timeout.httpreq; |
Willy Tarreau | cd7afc0 | 2009-07-12 10:03:17 +0200 | [diff] [blame] | 174 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 175 | } else if (!strcmp(args[0], "server") || (!strcmp(args[0], "srvtimeout") && (warn = WARN_SRVTO_DEPRECATED))) { |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 176 | name = "server"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 177 | tv = &proxy->timeout.server; |
| 178 | td = &defpx->timeout.server; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 179 | cap = PR_CAP_BE; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 180 | } else if (!strcmp(args[0], "connect") || (!strcmp(args[0], "contimeout") && (warn = WARN_CONTO_DEPRECATED))) { |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 181 | name = "connect"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 182 | tv = &proxy->timeout.connect; |
| 183 | td = &defpx->timeout.connect; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 184 | cap = PR_CAP_BE; |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 185 | } else if (!strcmp(args[0], "check")) { |
| 186 | tv = &proxy->timeout.check; |
| 187 | td = &defpx->timeout.check; |
| 188 | cap = PR_CAP_BE; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 189 | } else if (!strcmp(args[0], "queue")) { |
| 190 | tv = &proxy->timeout.queue; |
| 191 | td = &defpx->timeout.queue; |
| 192 | cap = PR_CAP_BE; |
Willy Tarreau | ce887fd | 2012-05-12 12:50:00 +0200 | [diff] [blame] | 193 | } else if (!strcmp(args[0], "tunnel")) { |
| 194 | tv = &proxy->timeout.tunnel; |
| 195 | td = &defpx->timeout.tunnel; |
| 196 | cap = PR_CAP_BE; |
Willy Tarreau | 05cdd96 | 2014-05-10 14:30:07 +0200 | [diff] [blame] | 197 | } else if (!strcmp(args[0], "client-fin")) { |
| 198 | tv = &proxy->timeout.clientfin; |
| 199 | td = &defpx->timeout.clientfin; |
| 200 | cap = PR_CAP_FE; |
| 201 | } else if (!strcmp(args[0], "server-fin")) { |
| 202 | tv = &proxy->timeout.serverfin; |
| 203 | td = &defpx->timeout.serverfin; |
| 204 | cap = PR_CAP_BE; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 205 | } else { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 206 | memprintf(err, |
| 207 | "'timeout' supports 'client', 'server', 'connect', 'check', " |
Willy Tarreau | 05cdd96 | 2014-05-10 14:30:07 +0200 | [diff] [blame] | 208 | "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', " |
| 209 | "'client-fin' and 'server-fin' (got '%s')", |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 210 | args[0]); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 211 | return -1; |
| 212 | } |
| 213 | |
| 214 | if (*args[1] == 0) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 215 | memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 216 | return -1; |
| 217 | } |
| 218 | |
| 219 | res = parse_time_err(args[1], &timeout, TIME_UNIT_MS); |
| 220 | if (res) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 221 | memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 222 | return -1; |
| 223 | } |
| 224 | |
| 225 | if (!(proxy->cap & cap)) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 226 | memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability", |
| 227 | name, proxy_type_str(proxy), proxy->id, |
| 228 | (cap & PR_CAP_BE) ? "backend" : "frontend"); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 229 | retval = 1; |
| 230 | } |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 231 | else if (defpx && *tv != *td) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 232 | memprintf(err, "overwriting 'timeout %s' which was already specified", name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 233 | retval = 1; |
| 234 | } |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 235 | else if (warn) { |
| 236 | if (!already_warned(warn)) { |
| 237 | memprintf(err, "the '%s' directive is now deprecated in favor of 'timeout %s', and will not be supported in future versions.", |
| 238 | args[0], name); |
| 239 | retval = 1; |
| 240 | } |
| 241 | } |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 242 | |
Willy Tarreau | fac5b59 | 2014-05-22 08:24:46 +0200 | [diff] [blame] | 243 | if (*args[2] != 0) { |
| 244 | memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]); |
| 245 | retval = -1; |
| 246 | } |
| 247 | |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 248 | *tv = MS_TO_TICKS(timeout); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 249 | return retval; |
| 250 | } |
| 251 | |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 252 | /* This function parses a "rate-limit" statement in a proxy section. It returns |
| 253 | * -1 if there is any error, 1 for a warning, otherwise zero. If it does not |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 254 | * return zero, it will write an error or warning message into a preallocated |
| 255 | * buffer returned at <err>. The function must be called with <args> pointing |
| 256 | * to the first command line word, with <proxy> pointing to the proxy being |
| 257 | * parsed, and <defpx> to the default proxy or NULL. |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 258 | */ |
| 259 | static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy, |
Willy Tarreau | 28a47d6 | 2012-09-18 20:02:48 +0200 | [diff] [blame] | 260 | struct proxy *defpx, const char *file, int line, |
| 261 | char **err) |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 262 | { |
| 263 | int retval, cap; |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 264 | char *res; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 265 | unsigned int *tv = NULL; |
| 266 | unsigned int *td = NULL; |
| 267 | unsigned int val; |
| 268 | |
| 269 | retval = 0; |
| 270 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 271 | if (strcmp(args[1], "sessions") == 0) { |
Willy Tarreau | 13a34bd | 2009-05-10 18:52:49 +0200 | [diff] [blame] | 272 | tv = &proxy->fe_sps_lim; |
| 273 | td = &defpx->fe_sps_lim; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 274 | cap = PR_CAP_FE; |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 275 | } |
| 276 | else { |
| 277 | memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 278 | return -1; |
| 279 | } |
| 280 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 281 | if (*args[2] == 0) { |
| 282 | memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 283 | return -1; |
| 284 | } |
| 285 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 286 | val = strtoul(args[2], &res, 0); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 287 | if (*res) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 288 | memprintf(err, "'%s %s' : unexpected character '%c' in integer value '%s'", args[0], args[1], *res, args[2]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 289 | return -1; |
| 290 | } |
| 291 | |
| 292 | if (!(proxy->cap & cap)) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 293 | memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability", |
| 294 | args[0], args[1], proxy_type_str(proxy), proxy->id, |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 295 | (cap & PR_CAP_BE) ? "backend" : "frontend"); |
| 296 | retval = 1; |
| 297 | } |
| 298 | else if (defpx && *tv != *td) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 299 | memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 300 | retval = 1; |
| 301 | } |
| 302 | |
| 303 | *tv = val; |
| 304 | return retval; |
| 305 | } |
| 306 | |
Willy Tarreau | c35362a | 2014-04-25 13:58:37 +0200 | [diff] [blame] | 307 | /* This function parses a "max-keep-alive-queue" statement in a proxy section. |
| 308 | * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it |
| 309 | * does not return zero, it will write an error or warning message into a |
| 310 | * preallocated buffer returned at <err>. The function must be called with |
| 311 | * <args> pointing to the first command line word, with <proxy> pointing to |
| 312 | * the proxy being parsed, and <defpx> to the default proxy or NULL. |
| 313 | */ |
| 314 | static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy, |
| 315 | struct proxy *defpx, const char *file, int line, |
| 316 | char **err) |
| 317 | { |
| 318 | int retval; |
| 319 | char *res; |
| 320 | unsigned int val; |
| 321 | |
| 322 | retval = 0; |
| 323 | |
| 324 | if (*args[1] == 0) { |
| 325 | memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]); |
| 326 | return -1; |
| 327 | } |
| 328 | |
| 329 | val = strtol(args[1], &res, 0); |
| 330 | if (*res) { |
| 331 | memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]); |
| 332 | return -1; |
| 333 | } |
| 334 | |
| 335 | if (!(proxy->cap & PR_CAP_BE)) { |
| 336 | memprintf(err, "%s will be ignored because %s '%s' has no backend capability", |
| 337 | args[0], proxy_type_str(proxy), proxy->id); |
| 338 | retval = 1; |
| 339 | } |
| 340 | |
| 341 | /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */ |
| 342 | proxy->max_ka_queue = val + 1; |
| 343 | return retval; |
| 344 | } |
| 345 | |
Thierry FOURNIER | a0a1b75 | 2015-05-26 17:44:32 +0200 | [diff] [blame] | 346 | /* This function parses a "declare" statement in a proxy section. It returns -1 |
| 347 | * if there is any error, 1 for warning, otherwise 0. If it does not return zero, |
| 348 | * it will write an error or warning message into a preallocated buffer returned |
| 349 | * at <err>. The function must be called with <args> pointing to the first command |
| 350 | * line word, with <proxy> pointing to the proxy being parsed, and <defpx> to the |
| 351 | * default proxy or NULL. |
| 352 | */ |
| 353 | static int proxy_parse_declare(char **args, int section, struct proxy *curpx, |
| 354 | struct proxy *defpx, const char *file, int line, |
| 355 | char **err) |
| 356 | { |
| 357 | /* Capture keyword wannot be declared in a default proxy. */ |
| 358 | if (curpx == defpx) { |
| 359 | memprintf(err, "'%s' not avalaible in default section", args[0]); |
| 360 | return -1; |
| 361 | } |
| 362 | |
| 363 | /* Capture keywork is only avalaible in frontend. */ |
| 364 | if (!(curpx->cap & PR_CAP_FE)) { |
| 365 | memprintf(err, "'%s' only avalaible in frontend or listen section", args[0]); |
| 366 | return -1; |
| 367 | } |
| 368 | |
| 369 | /* Check mandatory second keyword. */ |
| 370 | if (!args[1] || !*args[1]) { |
| 371 | memprintf(err, "'%s' needs a second keyword that specify the type of declaration ('capture')", args[0]); |
| 372 | return -1; |
| 373 | } |
| 374 | |
| 375 | /* Actually, declare is only avalaible for declaring capture |
| 376 | * slot, but in the future it can declare maps or variables. |
| 377 | * So, this section permits to check and switch acording with |
| 378 | * the second keyword. |
| 379 | */ |
| 380 | if (strcmp(args[1], "capture") == 0) { |
| 381 | char *error = NULL; |
| 382 | long len; |
| 383 | struct cap_hdr *hdr; |
| 384 | |
| 385 | /* Check the next keyword. */ |
| 386 | if (!args[2] || !*args[2] || |
| 387 | (strcmp(args[2], "response") != 0 && |
| 388 | strcmp(args[2], "request") != 0)) { |
| 389 | memprintf(err, "'%s %s' requires a direction ('request' or 'response')", args[0], args[1]); |
| 390 | return -1; |
| 391 | } |
| 392 | |
| 393 | /* Check the 'len' keyword. */ |
| 394 | if (!args[3] || !*args[3] || strcmp(args[3], "len") != 0) { |
| 395 | memprintf(err, "'%s %s' requires a capture length ('len')", args[0], args[1]); |
| 396 | return -1; |
| 397 | } |
| 398 | |
| 399 | /* Check the length value. */ |
| 400 | if (!args[4] || !*args[4]) { |
| 401 | memprintf(err, "'%s %s': 'len' requires a numeric value that represents the " |
| 402 | "capture length", |
| 403 | args[0], args[1]); |
| 404 | return -1; |
| 405 | } |
| 406 | |
| 407 | /* convert the length value. */ |
| 408 | len = strtol(args[4], &error, 10); |
| 409 | if (*error != '\0') { |
| 410 | memprintf(err, "'%s %s': cannot parse the length '%s'.", |
| 411 | args[0], args[1], args[3]); |
| 412 | return -1; |
| 413 | } |
| 414 | |
| 415 | /* check length. */ |
| 416 | if (len <= 0) { |
| 417 | memprintf(err, "length must be > 0"); |
| 418 | return -1; |
| 419 | } |
| 420 | |
| 421 | /* register the capture. */ |
Vincent Bernat | 02779b6 | 2016-04-03 13:48:43 +0200 | [diff] [blame] | 422 | hdr = calloc(1, sizeof(*hdr)); |
Thierry FOURNIER | a0a1b75 | 2015-05-26 17:44:32 +0200 | [diff] [blame] | 423 | hdr->name = NULL; /* not a header capture */ |
| 424 | hdr->namelen = 0; |
| 425 | hdr->len = len; |
| 426 | hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED); |
| 427 | |
| 428 | if (strcmp(args[2], "request") == 0) { |
| 429 | hdr->next = curpx->req_cap; |
| 430 | hdr->index = curpx->nb_req_cap++; |
| 431 | curpx->req_cap = hdr; |
| 432 | } |
| 433 | if (strcmp(args[2], "response") == 0) { |
| 434 | hdr->next = curpx->rsp_cap; |
| 435 | hdr->index = curpx->nb_rsp_cap++; |
| 436 | curpx->rsp_cap = hdr; |
| 437 | } |
| 438 | return 0; |
| 439 | } |
| 440 | else { |
| 441 | memprintf(err, "unknown declaration type '%s' (supports 'capture')", args[1]); |
| 442 | return -1; |
| 443 | } |
| 444 | } |
| 445 | |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 446 | /* This function inserts proxy <px> into the tree of known proxies. The proxy's |
| 447 | * name is used as the storing key so it must already have been initialized. |
| 448 | */ |
| 449 | void proxy_store_name(struct proxy *px) |
| 450 | { |
| 451 | px->conf.by_name.key = px->id; |
| 452 | ebis_insert(&proxy_by_name, &px->conf.by_name); |
| 453 | } |
| 454 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 455 | /* Returns a pointer to the first proxy matching capabilities <cap> and id |
| 456 | * <id>. NULL is returned if no match is found. If <table> is non-zero, it |
| 457 | * only considers proxies having a table. |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 458 | */ |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 459 | struct proxy *proxy_find_by_id(int id, int cap, int table) |
Willy Tarreau | 9e0bb10 | 2015-05-26 11:24:42 +0200 | [diff] [blame] | 460 | { |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 461 | struct eb32_node *n; |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 462 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 463 | for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) { |
| 464 | struct proxy *px = container_of(n, struct proxy, conf.id); |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 465 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 466 | if (px->uuid != id) |
| 467 | break; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 468 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 469 | if ((px->cap & cap) != cap) |
| 470 | continue; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 471 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 472 | if (table && !px->table.size) |
| 473 | continue; |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 474 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 475 | return px; |
| 476 | } |
| 477 | return NULL; |
| 478 | } |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 479 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 480 | /* Returns a pointer to the first proxy matching either name <name>, or id |
| 481 | * <name> if <name> begins with a '#'. NULL is returned if no match is found. |
| 482 | * If <table> is non-zero, it only considers proxies having a table. |
| 483 | */ |
| 484 | struct proxy *proxy_find_by_name(const char *name, int cap, int table) |
| 485 | { |
| 486 | struct proxy *curproxy; |
Willy Tarreau | 9e0bb10 | 2015-05-26 11:24:42 +0200 | [diff] [blame] | 487 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame] | 488 | if (*name == '#') { |
| 489 | curproxy = proxy_find_by_id(atoi(name + 1), cap, table); |
| 490 | if (curproxy) |
Willy Tarreau | c739aa8 | 2015-05-26 11:35:41 +0200 | [diff] [blame] | 491 | return curproxy; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 492 | } |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 493 | else { |
| 494 | struct ebpt_node *node; |
| 495 | |
| 496 | for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) { |
| 497 | curproxy = container_of(node, struct proxy, conf.by_name); |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 498 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 499 | if (strcmp(curproxy->id, name) != 0) |
| 500 | break; |
| 501 | |
| 502 | if ((curproxy->cap & cap) != cap) |
| 503 | continue; |
| 504 | |
Willy Tarreau | 9e0bb10 | 2015-05-26 11:24:42 +0200 | [diff] [blame] | 505 | if (table && !curproxy->table.size) |
| 506 | continue; |
| 507 | |
Willy Tarreau | c739aa8 | 2015-05-26 11:35:41 +0200 | [diff] [blame] | 508 | return curproxy; |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 509 | } |
| 510 | } |
Willy Tarreau | c739aa8 | 2015-05-26 11:35:41 +0200 | [diff] [blame] | 511 | return NULL; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 512 | } |
| 513 | |
Willy Tarreau | eb3e348 | 2015-05-27 16:46:26 +0200 | [diff] [blame] | 514 | /* Finds the best match for a proxy with capabilities <cap>, name <name> and id |
| 515 | * <id>. At most one of <id> or <name> may be different provided that <cap> is |
| 516 | * valid. Either <id> or <name> may be left unspecified (0). The purpose is to |
| 517 | * find a proxy based on some information from a previous configuration, across |
| 518 | * reloads or during information exchange between peers. |
| 519 | * |
| 520 | * Names are looked up first if present, then IDs are compared if present. In |
| 521 | * case of an inexact match whatever is forced in the configuration has |
| 522 | * precedence in the following order : |
| 523 | * - 1) forced ID (proves a renaming / change of proxy type) |
| 524 | * - 2) proxy name+type (may indicate a move if ID differs) |
| 525 | * - 3) automatic ID+type (may indicate a renaming) |
| 526 | * |
| 527 | * Depending on what is found, we can end up in the following situations : |
| 528 | * |
| 529 | * name id cap | possible causes |
| 530 | * -------------+----------------- |
| 531 | * -- -- -- | nothing found |
| 532 | * -- -- ok | nothing found |
| 533 | * -- ok -- | proxy deleted, ID points to next one |
| 534 | * -- ok ok | proxy renamed, or deleted with ID pointing to next one |
| 535 | * ok -- -- | proxy deleted, but other half with same name still here (before) |
| 536 | * ok -- ok | proxy's ID changed (proxy moved in the config file) |
| 537 | * ok ok -- | proxy deleted, but other half with same name still here (after) |
| 538 | * ok ok ok | perfect match |
| 539 | * |
| 540 | * Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits : |
Baptiste Assmann | 8a027cc | 2015-07-03 11:03:33 +0200 | [diff] [blame] | 541 | * - PR_FBM_MISMATCH_ID : proxy was found but ID differs |
| 542 | * (and ID was not zero) |
| 543 | * - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs |
| 544 | * (and name was not NULL) |
| 545 | * - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with |
| 546 | * the same name and/or id |
Willy Tarreau | eb3e348 | 2015-05-27 16:46:26 +0200 | [diff] [blame] | 547 | * |
| 548 | * Only a valid proxy is returned. If capabilities do not match, NULL is |
| 549 | * returned. The caller can check <diff> to report detailed warnings / errors, |
| 550 | * and decide whether or not to use what was found. |
| 551 | */ |
| 552 | struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff) |
| 553 | { |
| 554 | struct proxy *byname; |
| 555 | struct proxy *byid; |
| 556 | |
| 557 | if (!name && !id) |
| 558 | return NULL; |
| 559 | |
| 560 | if (diff) |
| 561 | *diff = 0; |
| 562 | |
| 563 | byname = byid = NULL; |
| 564 | |
| 565 | if (name) { |
| 566 | byname = proxy_find_by_name(name, cap, 0); |
| 567 | if (byname && (!id || byname->uuid == id)) |
| 568 | return byname; |
| 569 | } |
| 570 | |
| 571 | /* remaining possiblities : |
| 572 | * - name not set |
| 573 | * - name set but not found |
| 574 | * - name found, but ID doesn't match. |
| 575 | */ |
| 576 | if (id) { |
| 577 | byid = proxy_find_by_id(id, cap, 0); |
| 578 | if (byid) { |
| 579 | if (byname) { |
| 580 | /* id+type found, name+type found, but not all 3. |
| 581 | * ID wins only if forced, otherwise name wins. |
| 582 | */ |
| 583 | if (byid->options & PR_O_FORCED_ID) { |
| 584 | if (diff) |
Baptiste Assmann | 8a027cc | 2015-07-03 11:03:33 +0200 | [diff] [blame] | 585 | *diff |= PR_FBM_MISMATCH_NAME; |
Willy Tarreau | eb3e348 | 2015-05-27 16:46:26 +0200 | [diff] [blame] | 586 | return byid; |
| 587 | } |
| 588 | else { |
| 589 | if (diff) |
Baptiste Assmann | 8a027cc | 2015-07-03 11:03:33 +0200 | [diff] [blame] | 590 | *diff |= PR_FBM_MISMATCH_ID; |
Willy Tarreau | eb3e348 | 2015-05-27 16:46:26 +0200 | [diff] [blame] | 591 | return byname; |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | /* remaining possiblities : |
| 596 | * - name not set |
| 597 | * - name set but not found |
| 598 | */ |
| 599 | if (name && diff) |
Baptiste Assmann | 8a027cc | 2015-07-03 11:03:33 +0200 | [diff] [blame] | 600 | *diff |= PR_FBM_MISMATCH_NAME; |
Willy Tarreau | eb3e348 | 2015-05-27 16:46:26 +0200 | [diff] [blame] | 601 | return byid; |
| 602 | } |
| 603 | |
| 604 | /* ID not found */ |
| 605 | if (byname) { |
| 606 | if (diff) |
Baptiste Assmann | 8a027cc | 2015-07-03 11:03:33 +0200 | [diff] [blame] | 607 | *diff |= PR_FBM_MISMATCH_ID; |
Willy Tarreau | eb3e348 | 2015-05-27 16:46:26 +0200 | [diff] [blame] | 608 | return byname; |
| 609 | } |
| 610 | } |
| 611 | |
| 612 | /* All remaining possiblities will lead to NULL. If we can report more |
| 613 | * detailed information to the caller about changed types and/or name, |
| 614 | * we'll do it. For example, we could detect that "listen foo" was |
| 615 | * split into "frontend foo_ft" and "backend foo_bk" if IDs are forced. |
| 616 | * - name not set, ID not found |
| 617 | * - name not found, ID not set |
| 618 | * - name not found, ID not found |
| 619 | */ |
| 620 | if (!diff) |
| 621 | return NULL; |
| 622 | |
| 623 | if (name) { |
| 624 | byname = proxy_find_by_name(name, 0, 0); |
| 625 | if (byname && (!id || byname->uuid == id)) |
Baptiste Assmann | 8a027cc | 2015-07-03 11:03:33 +0200 | [diff] [blame] | 626 | *diff |= PR_FBM_MISMATCH_PROXYTYPE; |
Willy Tarreau | eb3e348 | 2015-05-27 16:46:26 +0200 | [diff] [blame] | 627 | } |
| 628 | |
| 629 | if (id) { |
| 630 | byid = proxy_find_by_id(id, 0, 0); |
| 631 | if (byid) { |
| 632 | if (!name) |
Baptiste Assmann | 8a027cc | 2015-07-03 11:03:33 +0200 | [diff] [blame] | 633 | *diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */ |
Willy Tarreau | eb3e348 | 2015-05-27 16:46:26 +0200 | [diff] [blame] | 634 | else if (byid->options & PR_O_FORCED_ID) |
Baptiste Assmann | 8a027cc | 2015-07-03 11:03:33 +0200 | [diff] [blame] | 635 | *diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */ |
Willy Tarreau | eb3e348 | 2015-05-27 16:46:26 +0200 | [diff] [blame] | 636 | /* otherwise it's a different proxy that was returned */ |
| 637 | } |
| 638 | } |
| 639 | return NULL; |
| 640 | } |
| 641 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 642 | /* |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 643 | * This function finds a server with matching name within selected proxy. |
| 644 | * It also checks if there are more matching servers with |
| 645 | * requested name as this often leads into unexpected situations. |
| 646 | */ |
| 647 | |
| 648 | struct server *findserver(const struct proxy *px, const char *name) { |
| 649 | |
| 650 | struct server *cursrv, *target = NULL; |
| 651 | |
| 652 | if (!px) |
| 653 | return NULL; |
| 654 | |
| 655 | for (cursrv = px->srv; cursrv; cursrv = cursrv->next) { |
| 656 | if (strcmp(cursrv->id, name)) |
| 657 | continue; |
| 658 | |
| 659 | if (!target) { |
| 660 | target = cursrv; |
| 661 | continue; |
| 662 | } |
| 663 | |
Cyril Bonté | 0bb519e | 2012-04-04 12:57:19 +0200 | [diff] [blame] | 664 | Alert("Refusing to use duplicated server '%s' found in proxy: %s!\n", |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 665 | name, px->id); |
| 666 | |
| 667 | return NULL; |
| 668 | } |
| 669 | |
| 670 | return target; |
| 671 | } |
| 672 | |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 673 | /* This function checks that the designated proxy has no http directives |
| 674 | * enabled. It will output a warning if there are, and will fix some of them. |
| 675 | * It returns the number of fatal errors encountered. This should be called |
| 676 | * at the end of the configuration parsing if the proxy is not in http mode. |
| 677 | * The <file> argument is used to construct the error message. |
| 678 | */ |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 679 | int proxy_cfg_ensure_no_http(struct proxy *curproxy) |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 680 | { |
| 681 | if (curproxy->cookie_name != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 682 | Warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n", |
| 683 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 684 | } |
| 685 | if (curproxy->rsp_exp != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 686 | Warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n", |
| 687 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 688 | } |
| 689 | if (curproxy->req_exp != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 690 | Warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n", |
| 691 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 692 | } |
| 693 | if (curproxy->monitor_uri != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 694 | Warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n", |
| 695 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 696 | } |
Willy Tarreau | f3e49f9 | 2009-10-03 12:21:20 +0200 | [diff] [blame] | 697 | if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) { |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 698 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 699 | curproxy->lbprm.algo |= BE_LB_ALGO_RR; |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 700 | Warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n", |
| 701 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 702 | } |
Willy Tarreau | 1780416 | 2009-11-09 21:27:51 +0100 | [diff] [blame] | 703 | if (curproxy->to_log & (LW_REQ | LW_RESP)) { |
| 704 | curproxy->to_log &= ~(LW_REQ | LW_RESP); |
Willy Tarreau | 59ad1a2 | 2014-01-29 14:39:58 +0100 | [diff] [blame] | 705 | Warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n", |
Willy Tarreau | b1f3af2 | 2013-04-12 18:30:32 +0200 | [diff] [blame] | 706 | curproxy->conf.lfs_file, curproxy->conf.lfs_line, |
Willy Tarreau | 1780416 | 2009-11-09 21:27:51 +0100 | [diff] [blame] | 707 | proxy_type_str(curproxy), curproxy->id); |
| 708 | } |
Willy Tarreau | 62a6123 | 2013-04-12 18:13:46 +0200 | [diff] [blame] | 709 | if (curproxy->conf.logformat_string == default_http_log_format || |
| 710 | curproxy->conf.logformat_string == clf_http_log_format) { |
| 711 | /* Note: we don't change the directive's file:line number */ |
| 712 | curproxy->conf.logformat_string = default_tcp_log_format; |
| 713 | Warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n", |
| 714 | curproxy->conf.lfs_file, curproxy->conf.lfs_line, |
Willy Tarreau | 196729e | 2012-05-31 19:30:26 +0200 | [diff] [blame] | 715 | proxy_type_str(curproxy), curproxy->id); |
| 716 | } |
| 717 | |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 718 | return 0; |
| 719 | } |
| 720 | |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 721 | /* Perform the most basic initialization of a proxy : |
| 722 | * memset(), list_init(*), reset_timeouts(*). |
Willy Tarreau | b249e84 | 2011-09-07 18:41:08 +0200 | [diff] [blame] | 723 | * Any new proxy or peer should be initialized via this function. |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 724 | */ |
| 725 | void init_new_proxy(struct proxy *p) |
| 726 | { |
| 727 | memset(p, 0, sizeof(struct proxy)); |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 728 | p->obj_type = OBJ_TYPE_PROXY; |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 729 | LIST_INIT(&p->pendconns); |
| 730 | LIST_INIT(&p->acl); |
| 731 | LIST_INIT(&p->http_req_rules); |
Willy Tarreau | e365c0b | 2013-06-11 16:06:12 +0200 | [diff] [blame] | 732 | LIST_INIT(&p->http_res_rules); |
Willy Tarreau | 353bc9f | 2014-04-28 22:05:31 +0200 | [diff] [blame] | 733 | LIST_INIT(&p->block_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 734 | LIST_INIT(&p->redirect_rules); |
| 735 | LIST_INIT(&p->mon_fail_cond); |
| 736 | LIST_INIT(&p->switching_rules); |
Willy Tarreau | 4a5cade | 2012-04-05 21:09:48 +0200 | [diff] [blame] | 737 | LIST_INIT(&p->server_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 738 | LIST_INIT(&p->persist_rules); |
| 739 | LIST_INIT(&p->sticking_rules); |
| 740 | LIST_INIT(&p->storersp_rules); |
| 741 | LIST_INIT(&p->tcp_req.inspect_rules); |
| 742 | LIST_INIT(&p->tcp_rep.inspect_rules); |
| 743 | LIST_INIT(&p->tcp_req.l4_rules); |
Willy Tarreau | 620408f | 2016-10-21 16:37:51 +0200 | [diff] [blame] | 744 | LIST_INIT(&p->tcp_req.l5_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 745 | LIST_INIT(&p->req_add); |
| 746 | LIST_INIT(&p->rsp_add); |
| 747 | LIST_INIT(&p->listener_queue); |
William Lallemand | 0f99e34 | 2011-10-12 17:50:54 +0200 | [diff] [blame] | 748 | LIST_INIT(&p->logsrvs); |
William Lallemand | 723b73a | 2012-02-08 16:37:49 +0100 | [diff] [blame] | 749 | LIST_INIT(&p->logformat); |
Dragan Dosen | 0b85ece | 2015-09-25 19:17:44 +0200 | [diff] [blame] | 750 | LIST_INIT(&p->logformat_sd); |
William Lallemand | a73203e | 2012-03-12 12:48:57 +0100 | [diff] [blame] | 751 | LIST_INIT(&p->format_unique_id); |
Willy Tarreau | 2a65ff0 | 2012-09-13 17:54:29 +0200 | [diff] [blame] | 752 | LIST_INIT(&p->conf.bind); |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 753 | LIST_INIT(&p->conf.listeners); |
Willy Tarreau | a4312fa | 2013-04-02 16:34:32 +0200 | [diff] [blame] | 754 | LIST_INIT(&p->conf.args.list); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 755 | LIST_INIT(&p->tcpcheck_rules); |
Christopher Faulet | 443ea1a | 2016-02-04 13:40:26 +0100 | [diff] [blame] | 756 | LIST_INIT(&p->filter_configs); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 757 | |
| 758 | /* Timeouts are defined as -1 */ |
| 759 | proxy_reset_timeouts(p); |
| 760 | p->tcp_rep.inspect_delay = TICK_ETERNITY; |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 761 | |
| 762 | /* initial uuid is unassigned (-1) */ |
| 763 | p->uuid = -1; |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 764 | } |
| 765 | |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 766 | /* |
Willy Tarreau | 2ff7622 | 2007-04-09 19:29:56 +0200 | [diff] [blame] | 767 | * This function creates all proxy sockets. It should be done very early, |
| 768 | * typically before privileges are dropped. The sockets will be registered |
| 769 | * but not added to any fd_set, in order not to loose them across the fork(). |
Willy Tarreau | 562515c | 2011-07-25 08:11:52 +0200 | [diff] [blame] | 770 | * The proxies also start in READY state because they all have their listeners |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 771 | * bound. |
Willy Tarreau | 2ff7622 | 2007-04-09 19:29:56 +0200 | [diff] [blame] | 772 | * |
| 773 | * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL. |
| 774 | * Retryable errors will only be printed if <verbose> is not zero. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 775 | */ |
| 776 | int start_proxies(int verbose) |
| 777 | { |
| 778 | struct proxy *curproxy; |
| 779 | struct listener *listener; |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 780 | int lerr, err = ERR_NONE; |
| 781 | int pxerr; |
| 782 | char msg[100]; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 783 | |
| 784 | for (curproxy = proxy; curproxy != NULL; curproxy = curproxy->next) { |
| 785 | if (curproxy->state != PR_STNEW) |
| 786 | continue; /* already initialized */ |
| 787 | |
| 788 | pxerr = 0; |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 789 | list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) { |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 790 | if (listener->state != LI_ASSIGNED) |
| 791 | continue; /* already started */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 792 | |
Emeric Brun | cf20bf1 | 2010-10-22 16:06:11 +0200 | [diff] [blame] | 793 | lerr = listener->proto->bind(listener, msg, sizeof(msg)); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 794 | |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 795 | /* errors are reported if <verbose> is set or if they are fatal */ |
| 796 | if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) { |
| 797 | if (lerr & ERR_ALERT) |
| 798 | Alert("Starting %s %s: %s\n", |
| 799 | proxy_type_str(curproxy), curproxy->id, msg); |
| 800 | else if (lerr & ERR_WARN) |
| 801 | Warning("Starting %s %s: %s\n", |
| 802 | proxy_type_str(curproxy), curproxy->id, msg); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 803 | } |
| 804 | |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 805 | err |= lerr; |
| 806 | if (lerr & (ERR_ABORT | ERR_FATAL)) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 807 | pxerr |= 1; |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 808 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 809 | } |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 810 | else if (lerr & ERR_CODE) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 811 | pxerr |= 1; |
| 812 | continue; |
| 813 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 814 | } |
| 815 | |
| 816 | if (!pxerr) { |
Willy Tarreau | 562515c | 2011-07-25 08:11:52 +0200 | [diff] [blame] | 817 | curproxy->state = PR_STREADY; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 818 | send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id); |
| 819 | } |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 820 | |
| 821 | if (err & ERR_ABORT) |
| 822 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 823 | } |
| 824 | |
| 825 | return err; |
| 826 | } |
| 827 | |
| 828 | |
| 829 | /* |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 830 | * This is the proxy management task. It enables proxies when there are enough |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 831 | * free streams, or stops them when the table is full. It is designed to be |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 832 | * called as a task which is woken up upon stopping or when rate limiting must |
| 833 | * be enforced. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 834 | */ |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 835 | struct task *manage_proxy(struct task *t) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 836 | { |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 837 | struct proxy *p = t->context; |
| 838 | int next = TICK_ETERNITY; |
Willy Tarreau | 7958422 | 2009-03-06 09:18:27 +0100 | [diff] [blame] | 839 | unsigned int wait; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 840 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 841 | /* We should periodically try to enable listeners waiting for a |
| 842 | * global resource here. |
| 843 | */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 844 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 845 | /* first, let's check if we need to stop the proxy */ |
| 846 | if (unlikely(stopping && p->state != PR_STSTOPPED)) { |
| 847 | int t; |
| 848 | t = tick_remain(now_ms, p->stop_time); |
| 849 | if (t == 0) { |
| 850 | Warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 851 | p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| 852 | send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 853 | p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| 854 | stop_proxy(p); |
| 855 | /* try to free more memory */ |
| 856 | pool_gc2(); |
| 857 | } |
| 858 | else { |
| 859 | next = tick_first(next, p->stop_time); |
| 860 | } |
| 861 | } |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 862 | |
Willy Tarreau | 3a925c1 | 2013-09-04 17:54:01 +0200 | [diff] [blame] | 863 | /* If the proxy holds a stick table, we need to purge all unused |
| 864 | * entries. These are all the ones in the table with ref_cnt == 0 |
| 865 | * and all the ones in the pool used to allocate new entries. Any |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 866 | * entry attached to an existing stream waiting for a store will |
Willy Tarreau | 3a925c1 | 2013-09-04 17:54:01 +0200 | [diff] [blame] | 867 | * be in neither list. Any entry being dumped will have ref_cnt > 0. |
| 868 | * However we protect tables that are being synced to peers. |
| 869 | */ |
| 870 | if (unlikely(stopping && p->state == PR_STSTOPPED && p->table.current)) { |
| 871 | if (!p->table.syncing) { |
| 872 | stktable_trash_oldest(&p->table, p->table.current); |
| 873 | pool_gc2(); |
| 874 | } |
| 875 | if (p->table.current) { |
| 876 | /* some entries still remain, let's recheck in one second */ |
| 877 | next = tick_first(next, tick_add(now_ms, 1000)); |
| 878 | } |
| 879 | } |
| 880 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 881 | /* the rest below is just for frontends */ |
| 882 | if (!(p->cap & PR_CAP_FE)) |
| 883 | goto out; |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 884 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 885 | /* check the various reasons we may find to block the frontend */ |
| 886 | if (unlikely(p->feconn >= p->maxconn)) { |
| 887 | if (p->state == PR_STREADY) |
| 888 | p->state = PR_STFULL; |
| 889 | goto out; |
| 890 | } |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 891 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 892 | /* OK we have no reason to block, so let's unblock if we were blocking */ |
| 893 | if (p->state == PR_STFULL) |
| 894 | p->state = PR_STREADY; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 895 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 896 | if (p->fe_sps_lim && |
| 897 | (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) { |
| 898 | /* we're blocking because a limit was reached on the number of |
| 899 | * requests/s on the frontend. We want to re-check ASAP, which |
| 900 | * means in 1 ms before estimated expiration date, because the |
| 901 | * timer will have settled down. |
| 902 | */ |
| 903 | next = tick_first(next, tick_add(now_ms, wait)); |
| 904 | goto out; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 905 | } |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 906 | |
| 907 | /* The proxy is not limited so we can re-enable any waiting listener */ |
| 908 | if (!LIST_ISEMPTY(&p->listener_queue)) |
| 909 | dequeue_all_listeners(&p->listener_queue); |
| 910 | out: |
| 911 | t->expire = next; |
| 912 | task_queue(t); |
| 913 | return t; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | |
| 917 | /* |
| 918 | * this function disables health-check servers so that the process will quickly be ignored |
| 919 | * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace |
| 920 | * time will not be used since it would already not listen anymore to the socket. |
| 921 | */ |
| 922 | void soft_stop(void) |
| 923 | { |
| 924 | struct proxy *p; |
Willy Tarreau | bbe11b1 | 2011-07-25 11:16:24 +0200 | [diff] [blame] | 925 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 926 | |
| 927 | stopping = 1; |
| 928 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 929 | tv_update_date(0,1); /* else, the old time before select will be used */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 930 | while (p) { |
| 931 | if (p->state != PR_STSTOPPED) { |
Willy Tarreau | f8fbcef | 2008-10-10 17:51:34 +0200 | [diff] [blame] | 932 | Warning("Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace); |
| 933 | send_log(p, LOG_WARNING, "Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace); |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 934 | p->stop_time = tick_add(now_ms, p->grace); |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 935 | |
Willy Tarreau | 20b7afb | 2015-09-28 16:35:04 +0200 | [diff] [blame] | 936 | /* Note: do not wake up stopped proxies' task nor their tables' |
| 937 | * tasks as these ones might point to already released entries. |
| 938 | */ |
| 939 | if (p->table.size && p->table.sync_task) |
| 940 | task_wakeup(p->table.sync_task, TASK_WOKEN_MSG); |
| 941 | |
| 942 | if (p->task) |
| 943 | task_wakeup(p->task, TASK_WOKEN_MSG); |
| 944 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 945 | p = p->next; |
| 946 | } |
Willy Tarreau | bbe11b1 | 2011-07-25 11:16:24 +0200 | [diff] [blame] | 947 | |
| 948 | prs = peers; |
| 949 | while (prs) { |
Willy Tarreau | 337a666 | 2015-09-28 16:27:44 +0200 | [diff] [blame] | 950 | if (prs->peers_fe) |
| 951 | stop_proxy(prs->peers_fe); |
Willy Tarreau | bbe11b1 | 2011-07-25 11:16:24 +0200 | [diff] [blame] | 952 | prs = prs->next; |
| 953 | } |
Willy Tarreau | d0807c3 | 2010-08-27 18:26:11 +0200 | [diff] [blame] | 954 | /* signal zero is used to broadcast the "stopping" event */ |
| 955 | signal_handler(0); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 956 | } |
| 957 | |
| 958 | |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 959 | /* Temporarily disables listening on all of the proxy's listeners. Upon |
| 960 | * success, the proxy enters the PR_PAUSED state. If disabling at least one |
| 961 | * listener returns an error, then the proxy state is set to PR_STERROR |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 962 | * because we don't know how to resume from this. The function returns 0 |
| 963 | * if it fails, or non-zero on success. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 964 | */ |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 965 | int pause_proxy(struct proxy *p) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 966 | { |
| 967 | struct listener *l; |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 968 | |
| 969 | if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR || |
| 970 | p->state == PR_STSTOPPED || p->state == PR_STPAUSED) |
| 971 | return 1; |
| 972 | |
| 973 | Warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 974 | send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 975 | |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 976 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 977 | if (!pause_listener(l)) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 978 | p->state = PR_STERROR; |
| 979 | } |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 980 | |
| 981 | if (p->state == PR_STERROR) { |
| 982 | Warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id); |
| 983 | send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id); |
| 984 | return 0; |
| 985 | } |
| 986 | |
| 987 | p->state = PR_STPAUSED; |
| 988 | return 1; |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 989 | } |
| 990 | |
| 991 | |
| 992 | /* |
| 993 | * This function completely stops a proxy and releases its listeners. It has |
| 994 | * to be called when going down in order to release the ports so that another |
| 995 | * process may bind to them. It must also be called on disabled proxies at the |
| 996 | * end of start-up. When all listeners are closed, the proxy is set to the |
| 997 | * PR_STSTOPPED state. |
| 998 | */ |
| 999 | void stop_proxy(struct proxy *p) |
| 1000 | { |
| 1001 | struct listener *l; |
| 1002 | |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 1003 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 1004 | unbind_listener(l); |
| 1005 | if (l->state >= LI_ASSIGNED) { |
| 1006 | delete_listener(l); |
| 1007 | listeners--; |
Willy Tarreau | af7ad00 | 2010-08-31 15:39:26 +0200 | [diff] [blame] | 1008 | jobs--; |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 1009 | } |
| 1010 | } |
| 1011 | p->state = PR_STSTOPPED; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1012 | } |
| 1013 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 1014 | /* This function resumes listening on the specified proxy. It scans all of its |
| 1015 | * listeners and tries to enable them all. If any of them fails, the proxy is |
| 1016 | * put back to the paused state. It returns 1 upon success, or zero if an error |
| 1017 | * is encountered. |
| 1018 | */ |
| 1019 | int resume_proxy(struct proxy *p) |
| 1020 | { |
| 1021 | struct listener *l; |
| 1022 | int fail; |
| 1023 | |
| 1024 | if (p->state != PR_STPAUSED) |
| 1025 | return 1; |
| 1026 | |
| 1027 | Warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 1028 | send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 1029 | |
| 1030 | fail = 0; |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 1031 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 1032 | if (!resume_listener(l)) { |
| 1033 | int port; |
| 1034 | |
| 1035 | port = get_host_port(&l->addr); |
| 1036 | if (port) { |
| 1037 | Warning("Port %d busy while trying to enable %s %s.\n", |
| 1038 | port, proxy_cap_str(p->cap), p->id); |
| 1039 | send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n", |
| 1040 | port, proxy_cap_str(p->cap), p->id); |
| 1041 | } |
| 1042 | else { |
| 1043 | Warning("Bind on socket %d busy while trying to enable %s %s.\n", |
| 1044 | l->luid, proxy_cap_str(p->cap), p->id); |
| 1045 | send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n", |
| 1046 | l->luid, proxy_cap_str(p->cap), p->id); |
| 1047 | } |
| 1048 | |
| 1049 | /* Another port might have been enabled. Let's stop everything. */ |
| 1050 | fail = 1; |
| 1051 | break; |
| 1052 | } |
| 1053 | } |
| 1054 | |
| 1055 | p->state = PR_STREADY; |
| 1056 | if (fail) { |
| 1057 | pause_proxy(p); |
| 1058 | return 0; |
| 1059 | } |
| 1060 | return 1; |
| 1061 | } |
| 1062 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1063 | /* |
| 1064 | * This function temporarily disables listening so that another new instance |
| 1065 | * can start listening. It is designed to be called upon reception of a |
| 1066 | * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop |
| 1067 | * the proxy, or a SIGTTIN can be sent to listen again. |
| 1068 | */ |
| 1069 | void pause_proxies(void) |
| 1070 | { |
| 1071 | int err; |
| 1072 | struct proxy *p; |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 1073 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1074 | |
| 1075 | err = 0; |
| 1076 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 1077 | tv_update_date(0,1); /* else, the old time before select will be used */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1078 | while (p) { |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 1079 | err |= !pause_proxy(p); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1080 | p = p->next; |
| 1081 | } |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 1082 | |
| 1083 | prs = peers; |
| 1084 | while (prs) { |
Willy Tarreau | 337a666 | 2015-09-28 16:27:44 +0200 | [diff] [blame] | 1085 | if (prs->peers_fe) |
| 1086 | err |= !pause_proxy(prs->peers_fe); |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 1087 | prs = prs->next; |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 1088 | } |
| 1089 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1090 | if (err) { |
| 1091 | Warning("Some proxies refused to pause, performing soft stop now.\n"); |
| 1092 | send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n"); |
| 1093 | soft_stop(); |
| 1094 | } |
| 1095 | } |
| 1096 | |
| 1097 | |
| 1098 | /* |
| 1099 | * This function reactivates listening. This can be used after a call to |
| 1100 | * sig_pause(), for example when a new instance has failed starting up. |
| 1101 | * It is designed to be called upon reception of a SIGTTIN. |
| 1102 | */ |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 1103 | void resume_proxies(void) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1104 | { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 1105 | int err; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1106 | struct proxy *p; |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 1107 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1108 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 1109 | err = 0; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1110 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 1111 | tv_update_date(0,1); /* else, the old time before select will be used */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1112 | while (p) { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 1113 | err |= !resume_proxy(p); |
| 1114 | p = p->next; |
| 1115 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1116 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 1117 | prs = peers; |
| 1118 | while (prs) { |
Willy Tarreau | 337a666 | 2015-09-28 16:27:44 +0200 | [diff] [blame] | 1119 | if (prs->peers_fe) |
| 1120 | err |= !resume_proxy(prs->peers_fe); |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 1121 | prs = prs->next; |
| 1122 | } |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 1123 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 1124 | if (err) { |
| 1125 | Warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n"); |
| 1126 | send_log(p, LOG_WARNING, "Some proxies refused to resume, a restart is probably needed to resume safe operations.\n"); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1127 | } |
| 1128 | } |
| 1129 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1130 | /* Set current stream's backend to <be>. Nothing is done if the |
| 1131 | * stream already had a backend assigned, which is indicated by |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1132 | * s->flags & SF_BE_ASSIGNED. |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 1133 | * All flags, stats and counters which need be updated are updated. |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 1134 | * Returns 1 if done, 0 in case of internal error, eg: lack of resource. |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 1135 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1136 | int stream_set_backend(struct stream *s, struct proxy *be) |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 1137 | { |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 1138 | if (s->flags & SF_BE_ASSIGNED) |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 1139 | return 1; |
Christopher Faulet | 4117904 | 2016-06-21 11:54:52 +0200 | [diff] [blame] | 1140 | |
| 1141 | if (flt_set_stream_backend(s, be) < 0) |
| 1142 | return 0; |
| 1143 | |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 1144 | s->be = be; |
| 1145 | be->beconn++; |
Willy Tarreau | 7d0aaf3 | 2011-03-10 23:25:56 +0100 | [diff] [blame] | 1146 | if (be->beconn > be->be_counters.conn_max) |
| 1147 | be->be_counters.conn_max = be->beconn; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 1148 | proxy_inc_be_ctr(be); |
| 1149 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 1150 | /* assign new parameters to the stream from the new backend */ |
Willy Tarreau | f27b5ea | 2009-10-03 22:01:18 +0200 | [diff] [blame] | 1151 | s->si[1].flags &= ~SI_FL_INDEP_STR; |
| 1152 | if (be->options2 & PR_O2_INDEPSTR) |
| 1153 | s->si[1].flags |= SI_FL_INDEP_STR; |
| 1154 | |
Hongbo Long | e39683c | 2017-03-10 18:41:51 +0100 | [diff] [blame] | 1155 | if (tick_isset(be->timeout.serverfin)) |
| 1156 | s->si[1].hcto = be->timeout.serverfin; |
| 1157 | |
Willy Tarreau | 9fbe18e | 2015-05-01 22:42:08 +0200 | [diff] [blame] | 1158 | /* We want to enable the backend-specific analysers except those which |
| 1159 | * were already run as part of the frontend/listener. Note that it would |
| 1160 | * be more reliable to store the list of analysers that have been run, |
| 1161 | * but what we do here is OK for now. |
| 1162 | */ |
Christopher Faulet | 70e2f27 | 2017-01-09 16:33:19 +0100 | [diff] [blame] | 1163 | s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0); |
Willy Tarreau | 9fbe18e | 2015-05-01 22:42:08 +0200 | [diff] [blame] | 1164 | |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 1165 | /* If the target backend requires HTTP processing, we have to allocate |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 1166 | * the HTTP transaction and hdr_idx if we did not have one. |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 1167 | */ |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 1168 | if (unlikely(!s->txn && be->http_needed)) { |
| 1169 | if (unlikely(!http_alloc_txn(s))) |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 1170 | return 0; /* not enough memory */ |
Willy Tarreau | 39e4f62 | 2010-05-31 17:01:36 +0200 | [diff] [blame] | 1171 | |
| 1172 | /* and now initialize the HTTP transaction state */ |
| 1173 | http_init_txn(s); |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 1174 | } |
| 1175 | |
Christopher Faulet | 309c641 | 2015-12-02 09:57:32 +0100 | [diff] [blame] | 1176 | /* Be sure to filter request headers if the backend is an HTTP proxy and |
| 1177 | * if there are filters attached to the stream. */ |
| 1178 | if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s)) |
Christopher Faulet | 0184ea7 | 2017-01-05 14:06:34 +0100 | [diff] [blame] | 1179 | s->req.analysers |= AN_REQ_FLT_HTTP_HDRS; |
Christopher Faulet | 309c641 | 2015-12-02 09:57:32 +0100 | [diff] [blame] | 1180 | |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 1181 | if (s->txn) { |
| 1182 | if (be->options2 & PR_O2_RSPBUG_OK) |
| 1183 | s->txn->rsp.err_pos = -1; /* let buggy responses pass */ |
Willy Tarreau | 4e21ff9 | 2014-09-30 18:44:22 +0200 | [diff] [blame] | 1184 | |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 1185 | /* If we chain to an HTTP backend running a different HTTP mode, we |
| 1186 | * have to re-adjust the desired keep-alive/close mode to accommodate |
| 1187 | * both the frontend's and the backend's modes. |
| 1188 | */ |
Willy Tarreau | d0d8da9 | 2015-04-04 02:10:38 +0200 | [diff] [blame] | 1189 | if (strm_fe(s)->mode == PR_MODE_HTTP && be->mode == PR_MODE_HTTP && |
| 1190 | ((strm_fe(s)->options & PR_O_HTTP_MODE) != (be->options & PR_O_HTTP_MODE))) |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 1191 | http_adjust_conn_mode(s, s->txn, &s->txn->req); |
Willy Tarreau | 80a92c0 | 2014-03-12 10:41:13 +0100 | [diff] [blame] | 1192 | |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 1193 | /* If an LB algorithm needs to access some pre-parsed body contents, |
| 1194 | * we must not start to forward anything until the connection is |
| 1195 | * confirmed otherwise we'll lose the pointer to these data and |
| 1196 | * prevent the hash from being doable again after a redispatch. |
| 1197 | */ |
| 1198 | if (be->mode == PR_MODE_HTTP && |
| 1199 | (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM)) |
| 1200 | s->txn->req.flags |= HTTP_MSGF_WAIT_CONN; |
Willy Tarreau | 9fbe18e | 2015-05-01 22:42:08 +0200 | [diff] [blame] | 1201 | |
| 1202 | /* we may request to parse a request body */ |
| 1203 | if ((be->options & PR_O_WREQ_BODY) && |
| 1204 | (s->txn->req.body_len || (s->txn->req.flags & HTTP_MSGF_TE_CHNK))) |
| 1205 | s->req.analysers |= AN_REQ_HTTP_BODY; |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 1206 | } |
| 1207 | |
| 1208 | s->flags |= SF_BE_ASSIGNED; |
Willy Tarreau | 96e3121 | 2011-05-30 18:10:30 +0200 | [diff] [blame] | 1209 | if (be->options2 & PR_O2_NODELAY) { |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 1210 | s->req.flags |= CF_NEVER_WAIT; |
| 1211 | s->res.flags |= CF_NEVER_WAIT; |
Willy Tarreau | 96e3121 | 2011-05-30 18:10:30 +0200 | [diff] [blame] | 1212 | } |
| 1213 | |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 1214 | return 1; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 1215 | } |
| 1216 | |
Willy Tarreau | dc13c11 | 2013-06-21 23:16:39 +0200 | [diff] [blame] | 1217 | static struct cfg_kw_list cfg_kws = {ILH, { |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 1218 | { CFG_LISTEN, "timeout", proxy_parse_timeout }, |
| 1219 | { CFG_LISTEN, "clitimeout", proxy_parse_timeout }, |
| 1220 | { CFG_LISTEN, "contimeout", proxy_parse_timeout }, |
| 1221 | { CFG_LISTEN, "srvtimeout", proxy_parse_timeout }, |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 1222 | { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit }, |
Willy Tarreau | c35362a | 2014-04-25 13:58:37 +0200 | [diff] [blame] | 1223 | { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue }, |
Thierry FOURNIER | a0a1b75 | 2015-05-26 17:44:32 +0200 | [diff] [blame] | 1224 | { CFG_LISTEN, "declare", proxy_parse_declare }, |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 1225 | { 0, NULL, NULL }, |
| 1226 | }}; |
| 1227 | |
Willy Tarreau | 960f2cb | 2016-11-24 12:02:29 +0100 | [diff] [blame] | 1228 | /* Expects to find a frontend named <arg> and returns it, otherwise displays various |
| 1229 | * adequate error messages and returns NULL. This function is designed to be used by |
| 1230 | * functions requiring a frontend on the CLI. |
| 1231 | */ |
| 1232 | struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg) |
| 1233 | { |
| 1234 | struct proxy *px; |
| 1235 | |
| 1236 | if (!*arg) { |
| 1237 | appctx->ctx.cli.msg = "A frontend name is expected.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1238 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | 960f2cb | 2016-11-24 12:02:29 +0100 | [diff] [blame] | 1239 | return NULL; |
| 1240 | } |
| 1241 | |
| 1242 | px = proxy_fe_by_name(arg); |
| 1243 | if (!px) { |
| 1244 | appctx->ctx.cli.msg = "No such frontend.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1245 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | 960f2cb | 2016-11-24 12:02:29 +0100 | [diff] [blame] | 1246 | return NULL; |
| 1247 | } |
| 1248 | return px; |
| 1249 | } |
| 1250 | |
Olivier Houchard | 614f8d7 | 2017-03-14 20:08:46 +0100 | [diff] [blame] | 1251 | /* Expects to find a backend named <arg> and returns it, otherwise displays various |
| 1252 | * adequate error messages and returns NULL. This function is designed to be used by |
| 1253 | * functions requiring a frontend on the CLI. |
| 1254 | */ |
| 1255 | struct proxy *cli_find_backend(struct appctx *appctx, const char *arg) |
| 1256 | { |
| 1257 | struct proxy *px; |
| 1258 | |
| 1259 | if (!*arg) { |
| 1260 | appctx->ctx.cli.msg = "A backend name is expected.\n"; |
| 1261 | appctx->st0 = CLI_ST_PRINT; |
| 1262 | return NULL; |
| 1263 | } |
| 1264 | |
| 1265 | px = proxy_be_by_name(arg); |
| 1266 | if (!px) { |
| 1267 | appctx->ctx.cli.msg = "No such backend.\n"; |
| 1268 | appctx->st0 = CLI_ST_PRINT; |
| 1269 | return NULL; |
| 1270 | } |
| 1271 | return px; |
| 1272 | } |
| 1273 | |
| 1274 | |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1275 | /* parse a "show servers" CLI line, returns 0 if it wants to start the dump or |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1276 | * 1 if it stops immediately. If an argument is specified, it will set the proxy |
| 1277 | * pointer into cli.p0 and its ID into cli.i0. |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1278 | */ |
| 1279 | static int cli_parse_show_servers(char **args, struct appctx *appctx, void *private) |
| 1280 | { |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1281 | struct proxy *px; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1282 | |
| 1283 | /* check if a backend name has been provided */ |
| 1284 | if (*args[3]) { |
| 1285 | /* read server state from local file */ |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1286 | px = proxy_be_by_name(args[3]); |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1287 | |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1288 | if (!px) { |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1289 | appctx->ctx.cli.msg = "Can't find backend.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1290 | appctx->st0 = CLI_ST_PRINT; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1291 | return 1; |
| 1292 | } |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1293 | appctx->ctx.cli.p0 = px; |
| 1294 | appctx->ctx.cli.i0 = px->uuid; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1295 | } |
| 1296 | return 0; |
| 1297 | } |
| 1298 | |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1299 | /* dumps server state information into <buf> for all the servers found in backend cli.p0. |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1300 | * These information are all the parameters which may change during HAProxy runtime. |
| 1301 | * By default, we only export to the last known server state file format. |
| 1302 | * These information can be used at next startup to recover same level of server state. |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1303 | * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's |
| 1304 | * pointer from cli.p1. |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1305 | */ |
| 1306 | static int dump_servers_state(struct stream_interface *si, struct chunk *buf) |
| 1307 | { |
| 1308 | struct appctx *appctx = __objt_appctx(si->end); |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1309 | struct proxy *px = appctx->ctx.cli.p0; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1310 | struct server *srv; |
| 1311 | char srv_addr[INET6_ADDRSTRLEN + 1]; |
| 1312 | time_t srv_time_since_last_change; |
| 1313 | int bk_f_forced_id, srv_f_forced_id; |
| 1314 | |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1315 | /* we don't want to report any state if the backend is not enabled on this process */ |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1316 | if (px->bind_proc && !(px->bind_proc & (1UL << (relative_pid - 1)))) |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1317 | return 1; |
| 1318 | |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1319 | if (!appctx->ctx.cli.p1) |
| 1320 | appctx->ctx.cli.p1 = px->srv; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1321 | |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1322 | for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) { |
| 1323 | srv = appctx->ctx.cli.p1; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1324 | srv_addr[0] = '\0'; |
| 1325 | |
| 1326 | switch (srv->addr.ss_family) { |
| 1327 | case AF_INET: |
| 1328 | inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr, |
| 1329 | srv_addr, INET_ADDRSTRLEN + 1); |
| 1330 | break; |
| 1331 | case AF_INET6: |
| 1332 | inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr, |
| 1333 | srv_addr, INET6_ADDRSTRLEN + 1); |
| 1334 | break; |
| 1335 | } |
| 1336 | srv_time_since_last_change = now.tv_sec - srv->last_change; |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1337 | bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1338 | srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0; |
| 1339 | |
| 1340 | chunk_appendf(buf, |
| 1341 | "%d %s " |
| 1342 | "%d %s %s " |
| 1343 | "%d %d %d %d %ld " |
| 1344 | "%d %d %d %d %d " |
| 1345 | "%d %d" |
| 1346 | "\n", |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1347 | px->uuid, px->id, |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1348 | srv->puid, srv->id, srv_addr, |
| 1349 | srv->state, srv->admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change, |
| 1350 | srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state, |
| 1351 | bk_f_forced_id, srv_f_forced_id); |
| 1352 | if (bi_putchk(si_ic(si), &trash) == -1) { |
| 1353 | si_applet_cant_put(si); |
| 1354 | return 0; |
| 1355 | } |
| 1356 | } |
| 1357 | return 1; |
| 1358 | } |
| 1359 | |
| 1360 | /* Parses backend list or simply use backend name provided by the user to return |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1361 | * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is |
| 1362 | * non-null. |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1363 | */ |
| 1364 | static int cli_io_handler_servers_state(struct appctx *appctx) |
| 1365 | { |
| 1366 | struct stream_interface *si = appctx->owner; |
| 1367 | extern struct proxy *proxy; |
| 1368 | struct proxy *curproxy; |
| 1369 | |
| 1370 | chunk_reset(&trash); |
| 1371 | |
| 1372 | if (appctx->st2 == STAT_ST_INIT) { |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1373 | if (!appctx->ctx.cli.p0) |
| 1374 | appctx->ctx.cli.p0 = proxy; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1375 | appctx->st2 = STAT_ST_HEAD; |
| 1376 | } |
| 1377 | |
| 1378 | if (appctx->st2 == STAT_ST_HEAD) { |
| 1379 | chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES); |
| 1380 | if (bi_putchk(si_ic(si), &trash) == -1) { |
| 1381 | si_applet_cant_put(si); |
| 1382 | return 0; |
| 1383 | } |
| 1384 | appctx->st2 = STAT_ST_INFO; |
| 1385 | } |
| 1386 | |
| 1387 | /* STAT_ST_INFO */ |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1388 | for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) { |
| 1389 | curproxy = appctx->ctx.cli.p0; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1390 | /* servers are only in backends */ |
| 1391 | if (curproxy->cap & PR_CAP_BE) { |
| 1392 | if (!dump_servers_state(si, &trash)) |
| 1393 | return 0; |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1394 | } |
| 1395 | /* only the selected proxy is dumped */ |
Willy Tarreau | 3c92f2a | 2016-12-16 18:23:39 +0100 | [diff] [blame] | 1396 | if (appctx->ctx.cli.i0) |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1397 | break; |
| 1398 | } |
| 1399 | |
| 1400 | return 1; |
| 1401 | } |
| 1402 | |
Willy Tarreau | 608ea59 | 2016-12-16 18:01:15 +0100 | [diff] [blame] | 1403 | /* Parses backend list and simply report backend names. It keeps the proxy |
| 1404 | * pointer in cli.p0. |
| 1405 | */ |
William Lallemand | 933efcd | 2016-11-22 12:34:16 +0100 | [diff] [blame] | 1406 | static int cli_io_handler_show_backend(struct appctx *appctx) |
| 1407 | { |
| 1408 | extern struct proxy *proxy; |
| 1409 | struct stream_interface *si = appctx->owner; |
| 1410 | struct proxy *curproxy; |
| 1411 | |
| 1412 | chunk_reset(&trash); |
| 1413 | |
Willy Tarreau | 608ea59 | 2016-12-16 18:01:15 +0100 | [diff] [blame] | 1414 | if (!appctx->ctx.cli.p0) { |
William Lallemand | 933efcd | 2016-11-22 12:34:16 +0100 | [diff] [blame] | 1415 | chunk_printf(&trash, "# name\n"); |
| 1416 | if (bi_putchk(si_ic(si), &trash) == -1) { |
| 1417 | si_applet_cant_put(si); |
| 1418 | return 0; |
| 1419 | } |
Willy Tarreau | 608ea59 | 2016-12-16 18:01:15 +0100 | [diff] [blame] | 1420 | appctx->ctx.cli.p0 = proxy; |
William Lallemand | 933efcd | 2016-11-22 12:34:16 +0100 | [diff] [blame] | 1421 | } |
| 1422 | |
Willy Tarreau | 608ea59 | 2016-12-16 18:01:15 +0100 | [diff] [blame] | 1423 | for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) { |
| 1424 | curproxy = appctx->ctx.cli.p0; |
William Lallemand | 933efcd | 2016-11-22 12:34:16 +0100 | [diff] [blame] | 1425 | |
| 1426 | /* looking for backends only */ |
| 1427 | if (!(curproxy->cap & PR_CAP_BE)) |
| 1428 | continue; |
| 1429 | |
| 1430 | /* we don't want to list a backend which is bound to this process */ |
| 1431 | if (curproxy->bind_proc && !(curproxy->bind_proc & (1UL << (relative_pid - 1)))) |
| 1432 | continue; |
| 1433 | |
| 1434 | chunk_appendf(&trash, "%s\n", curproxy->id); |
| 1435 | if (bi_putchk(si_ic(si), &trash) == -1) { |
| 1436 | si_applet_cant_put(si); |
| 1437 | return 0; |
| 1438 | } |
| 1439 | } |
| 1440 | |
| 1441 | return 1; |
| 1442 | } |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1443 | |
Olivier Houchard | 614f8d7 | 2017-03-14 20:08:46 +0100 | [diff] [blame] | 1444 | /* Parses the "enable dynamic-cookies backend" directive, it always returns 1 */ |
| 1445 | static int cli_parse_enable_dyncookie_backend(char **args, struct appctx *appctx, void *private) |
| 1446 | { |
| 1447 | struct proxy *px; |
| 1448 | struct server *s; |
| 1449 | |
| 1450 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 1451 | return 1; |
| 1452 | |
| 1453 | px = cli_find_backend(appctx, args[3]); |
| 1454 | if (!px) |
| 1455 | return 1; |
| 1456 | |
| 1457 | px->ck_opts |= PR_CK_DYNAMIC; |
| 1458 | |
| 1459 | for (s = px->srv; s != NULL; s = s->next) |
| 1460 | srv_set_dyncookie(s); |
| 1461 | |
| 1462 | return 1; |
| 1463 | } |
| 1464 | |
| 1465 | /* Parses the "disable dynamic-cookies backend" directive, it always returns 1 */ |
| 1466 | static int cli_parse_disable_dyncookie_backend(char **args, struct appctx *appctx, void *private) |
| 1467 | { |
| 1468 | struct proxy *px; |
| 1469 | struct server *s; |
| 1470 | |
| 1471 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 1472 | return 1; |
| 1473 | |
| 1474 | px = cli_find_backend(appctx, args[3]); |
| 1475 | if (!px) |
| 1476 | return 1; |
| 1477 | |
| 1478 | px->ck_opts &= ~PR_CK_DYNAMIC; |
| 1479 | |
| 1480 | for (s = px->srv; s != NULL; s = s->next) { |
| 1481 | if (!(s->flags & SRV_F_COOKIESET)) { |
| 1482 | free(s->cookie); |
| 1483 | s->cookie = NULL; |
| 1484 | } |
| 1485 | } |
| 1486 | |
| 1487 | return 1; |
| 1488 | } |
| 1489 | |
| 1490 | /* Parses the "set dynamic-cookie-key backend" directive, it always returns 1 */ |
| 1491 | static int cli_parse_set_dyncookie_key_backend(char **args, struct appctx *appctx, void *private) |
| 1492 | { |
| 1493 | struct proxy *px; |
| 1494 | struct server *s; |
| 1495 | char *newkey; |
| 1496 | |
| 1497 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 1498 | return 1; |
| 1499 | |
| 1500 | px = cli_find_backend(appctx, args[3]); |
| 1501 | if (!px) |
| 1502 | return 1; |
| 1503 | |
| 1504 | if (!*args[4]) { |
| 1505 | appctx->ctx.cli.msg = "String value expected.\n"; |
| 1506 | appctx->st0 = CLI_ST_PRINT; |
| 1507 | return 1; |
| 1508 | } |
| 1509 | |
| 1510 | newkey = strdup(args[4]); |
| 1511 | if (!newkey) { |
| 1512 | appctx->ctx.cli.msg = "Failed to allocate memory.\n"; |
| 1513 | appctx->st0 = CLI_ST_PRINT; |
| 1514 | return 1; |
| 1515 | } |
| 1516 | free(px->dyncookie_key); |
| 1517 | px->dyncookie_key = newkey; |
| 1518 | |
| 1519 | for (s = px->srv; s != NULL; s = s->next) |
| 1520 | srv_set_dyncookie(s); |
| 1521 | |
| 1522 | return 1; |
| 1523 | } |
| 1524 | |
Willy Tarreau | c429a1f | 2016-11-23 16:22:04 +0100 | [diff] [blame] | 1525 | /* Parses the "set maxconn frontend" directive, it always returns 1 */ |
| 1526 | static int cli_parse_set_maxconn_frontend(char **args, struct appctx *appctx, void *private) |
| 1527 | { |
| 1528 | struct proxy *px; |
| 1529 | struct listener *l; |
| 1530 | int v; |
| 1531 | |
| 1532 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 1533 | return 1; |
| 1534 | |
| 1535 | px = cli_find_frontend(appctx, args[3]); |
| 1536 | if (!px) |
| 1537 | return 1; |
| 1538 | |
| 1539 | if (!*args[4]) { |
| 1540 | appctx->ctx.cli.msg = "Integer value expected.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1541 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | c429a1f | 2016-11-23 16:22:04 +0100 | [diff] [blame] | 1542 | return 1; |
| 1543 | } |
| 1544 | |
| 1545 | v = atoi(args[4]); |
| 1546 | if (v < 0) { |
| 1547 | appctx->ctx.cli.msg = "Value out of range.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1548 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | c429a1f | 2016-11-23 16:22:04 +0100 | [diff] [blame] | 1549 | return 1; |
| 1550 | } |
| 1551 | |
| 1552 | /* OK, the value is fine, so we assign it to the proxy and to all of |
| 1553 | * its listeners. The blocked ones will be dequeued. |
| 1554 | */ |
| 1555 | px->maxconn = v; |
| 1556 | list_for_each_entry(l, &px->conf.listeners, by_fe) { |
| 1557 | l->maxconn = v; |
| 1558 | if (l->state == LI_FULL) |
| 1559 | resume_listener(l); |
| 1560 | } |
| 1561 | |
| 1562 | if (px->maxconn > px->feconn && !LIST_ISEMPTY(&px->listener_queue)) |
| 1563 | dequeue_all_listeners(&px->listener_queue); |
| 1564 | |
| 1565 | return 1; |
| 1566 | } |
| 1567 | |
Willy Tarreau | 5212d7f | 2016-11-24 11:13:06 +0100 | [diff] [blame] | 1568 | /* Parses the "shutdown frontend" directive, it always returns 1 */ |
| 1569 | static int cli_parse_shutdown_frontend(char **args, struct appctx *appctx, void *private) |
| 1570 | { |
| 1571 | struct proxy *px; |
| 1572 | |
| 1573 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 1574 | return 1; |
| 1575 | |
| 1576 | px = cli_find_frontend(appctx, args[2]); |
| 1577 | if (!px) |
| 1578 | return 1; |
| 1579 | |
| 1580 | if (px->state == PR_STSTOPPED) { |
| 1581 | appctx->ctx.cli.msg = "Frontend was already shut down.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1582 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | 5212d7f | 2016-11-24 11:13:06 +0100 | [diff] [blame] | 1583 | return 1; |
| 1584 | } |
| 1585 | |
| 1586 | Warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 1587 | px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn); |
| 1588 | send_log(px, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 1589 | px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn); |
| 1590 | stop_proxy(px); |
| 1591 | return 1; |
| 1592 | } |
| 1593 | |
Willy Tarreau | 15b9e68 | 2016-11-24 11:55:28 +0100 | [diff] [blame] | 1594 | /* Parses the "disable frontend" directive, it always returns 1 */ |
| 1595 | static int cli_parse_disable_frontend(char **args, struct appctx *appctx, void *private) |
| 1596 | { |
| 1597 | struct proxy *px; |
| 1598 | |
| 1599 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 1600 | return 1; |
| 1601 | |
| 1602 | px = cli_find_frontend(appctx, args[2]); |
| 1603 | if (!px) |
| 1604 | return 1; |
| 1605 | |
| 1606 | if (px->state == PR_STSTOPPED) { |
| 1607 | appctx->ctx.cli.msg = "Frontend was previously shut down, cannot disable.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1608 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | 15b9e68 | 2016-11-24 11:55:28 +0100 | [diff] [blame] | 1609 | return 1; |
| 1610 | } |
| 1611 | |
| 1612 | if (px->state == PR_STPAUSED) { |
| 1613 | appctx->ctx.cli.msg = "Frontend is already disabled.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1614 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | 15b9e68 | 2016-11-24 11:55:28 +0100 | [diff] [blame] | 1615 | return 1; |
| 1616 | } |
| 1617 | |
| 1618 | if (!pause_proxy(px)) { |
| 1619 | appctx->ctx.cli.msg = "Failed to pause frontend, check logs for precise cause.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1620 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | 15b9e68 | 2016-11-24 11:55:28 +0100 | [diff] [blame] | 1621 | return 1; |
| 1622 | } |
| 1623 | return 1; |
| 1624 | } |
| 1625 | |
| 1626 | /* Parses the "enable frontend" directive, it always returns 1 */ |
| 1627 | static int cli_parse_enable_frontend(char **args, struct appctx *appctx, void *private) |
| 1628 | { |
| 1629 | struct proxy *px; |
| 1630 | |
| 1631 | if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) |
| 1632 | return 1; |
| 1633 | |
| 1634 | px = cli_find_frontend(appctx, args[2]); |
| 1635 | if (!px) |
| 1636 | return 1; |
| 1637 | |
| 1638 | if (px->state == PR_STSTOPPED) { |
| 1639 | appctx->ctx.cli.msg = "Frontend was previously shut down, cannot enable.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1640 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | 15b9e68 | 2016-11-24 11:55:28 +0100 | [diff] [blame] | 1641 | return 1; |
| 1642 | } |
| 1643 | |
| 1644 | if (px->state != PR_STPAUSED) { |
| 1645 | appctx->ctx.cli.msg = "Frontend is already enabled.\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1646 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | 15b9e68 | 2016-11-24 11:55:28 +0100 | [diff] [blame] | 1647 | return 1; |
| 1648 | } |
| 1649 | |
| 1650 | if (!resume_proxy(px)) { |
| 1651 | appctx->ctx.cli.msg = "Failed to resume frontend, check logs for precise cause (port conflict?).\n"; |
Willy Tarreau | 3b6e547 | 2016-11-24 15:53:53 +0100 | [diff] [blame] | 1652 | appctx->st0 = CLI_ST_PRINT; |
Willy Tarreau | 15b9e68 | 2016-11-24 11:55:28 +0100 | [diff] [blame] | 1653 | return 1; |
| 1654 | } |
| 1655 | return 1; |
| 1656 | } |
| 1657 | |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1658 | /* register cli keywords */ |
| 1659 | static struct cli_kw_list cli_kws = {{ },{ |
Willy Tarreau | 15b9e68 | 2016-11-24 11:55:28 +0100 | [diff] [blame] | 1660 | { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL }, |
| 1661 | { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL }, |
Willy Tarreau | c429a1f | 2016-11-23 16:22:04 +0100 | [diff] [blame] | 1662 | { { "set", "maxconn", "frontend", NULL }, "set maxconn frontend : change a frontend's maxconn setting", cli_parse_set_maxconn_frontend, NULL }, |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1663 | { { "show","servers", "state", NULL }, "show servers state [id]: dump volatile server information (for backend <id>)", cli_parse_show_servers, cli_io_handler_servers_state }, |
Willy Tarreau | 608ea59 | 2016-12-16 18:01:15 +0100 | [diff] [blame] | 1664 | { { "show", "backend", NULL }, "show backend : list backends in the current running config", NULL, cli_io_handler_show_backend }, |
Willy Tarreau | 5212d7f | 2016-11-24 11:13:06 +0100 | [diff] [blame] | 1665 | { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL }, |
Olivier Houchard | 614f8d7 | 2017-03-14 20:08:46 +0100 | [diff] [blame] | 1666 | { { "set", "dynamic-cookie-key", "backend", NULL }, "set dynamic-cookie-key backend : change a backend secret key for dynamic cookies", cli_parse_set_dyncookie_key_backend, NULL }, |
| 1667 | { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL }, |
| 1668 | { { "disable", "dynamic-cookie", "backend", NULL }, "disable dynamic-cookie backend : disable dynamic cookies on a specific backend", cli_parse_disable_dyncookie_backend, NULL }, |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1669 | {{},} |
| 1670 | }}; |
| 1671 | |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 1672 | __attribute__((constructor)) |
| 1673 | static void __proxy_module_init(void) |
| 1674 | { |
| 1675 | cfg_register_keywords(&cfg_kws); |
William Lallemand | a6c5f33 | 2016-11-19 02:25:36 +0100 | [diff] [blame] | 1676 | cli_register_kw(&cli_kws); |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 1677 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1678 | |
| 1679 | /* |
| 1680 | * Local variables: |
| 1681 | * c-indent-level: 8 |
| 1682 | * c-basic-offset: 8 |
| 1683 | * End: |
| 1684 | */ |