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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * Proxy variables and functions.
3 *
Willy Tarreau3a7d2072009-03-05 23:48:25 +01004 * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
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 Tarreauc8f24f82007-11-30 18:38:35 +010015#include <string.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020016#include <sys/types.h>
17#include <sys/socket.h>
18#include <sys/stat.h>
19
Willy Tarreau2dd0d472006-06-29 17:53:05 +020020#include <common/defaults.h>
Willy Tarreau9de1bbd2008-07-09 20:34:27 +020021#include <common/cfgparse.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020022#include <common/compat.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020023#include <common/config.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010024#include <common/errors.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010025#include <common/initcall.h>
Willy Tarreau4d2d0982007-05-14 00:39:29 +020026#include <common/memory.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020027#include <common/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020028
Willy Tarreaucfd837f2014-03-15 07:43:51 +010029#include <eb32tree.h>
30#include <ebistree.h>
31
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +020032#include <types/capture.h>
Willy Tarreau960f2cb2016-11-24 12:02:29 +010033#include <types/cli.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020034#include <types/global.h>
Willy Tarreau3fdb3662012-11-12 00:42:33 +010035#include <types/obj_type.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020036#include <types/peers.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010037#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020038
William Lallemanda6c5f332016-11-19 02:25:36 +010039#include <proto/applet.h>
40#include <proto/cli.h>
Alexandre Cassen87ea5482007-10-11 20:48:58 +020041#include <proto/backend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020042#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020043#include <proto/filters.h>
Willy Tarreau51aecc72009-07-12 09:47:04 +020044#include <proto/hdr_idx.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020045#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020046#include <proto/log.h>
Willy Tarreaue6b98942007-10-29 01:09:36 +010047#include <proto/proto_tcp.h>
Willy Tarreau39e4f622010-05-31 17:01:36 +020048#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020049#include <proto/proxy.h>
Olivier Houchard614f8d72017-03-14 20:08:46 +010050#include <proto/server.h>
Willy Tarreaud0807c32010-08-27 18:26:11 +020051#include <proto/signal.h>
Willy Tarreaufb0afa72015-04-03 14:46:27 +020052#include <proto/stream.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010053#include <proto/stream_interface.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020054#include <proto/task.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020055
56
Willy Tarreau918ff602011-07-25 16:33:49 +020057int listeners; /* # of proxy listeners, set by cfgparse */
Olivier Houchardfbc74e82017-11-24 16:54:05 +010058struct proxy *proxies_list = NULL; /* list of all existing proxies */
Willy Tarreau53fb4ae2009-10-04 23:04:08 +020059struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
Willy Tarreauf79d9502014-03-15 07:22:35 +010060struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */
Willy Tarreau10479e42010-12-12 14:00:34 +010061unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
Willy Tarreaubaaee002006-06-26 02:48:02 +020062
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010063/* proxy->options */
64const struct cfg_opt cfg_opts[] =
65{
66 { "abortonclose", PR_O_ABRT_CLOSE, PR_CAP_BE, 0, 0 },
67 { "allbackups", PR_O_USE_ALL_BK, PR_CAP_BE, 0, 0 },
68 { "checkcache", PR_O_CHK_CACHE, PR_CAP_BE, 0, PR_MODE_HTTP },
69 { "clitcpka", PR_O_TCP_CLI_KA, PR_CAP_FE, 0, 0 },
70 { "contstats", PR_O_CONTSTATS, PR_CAP_FE, 0, 0 },
71 { "dontlognull", PR_O_NULLNOLOG, PR_CAP_FE, 0, 0 },
72 { "http_proxy", PR_O_HTTP_PROXY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
73 { "http-buffer-request", PR_O_WREQ_BODY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
74 { "http-ignore-probes", PR_O_IGNORE_PRB, PR_CAP_FE, 0, PR_MODE_HTTP },
75 { "prefer-last-server", PR_O_PREF_LAST, PR_CAP_BE, 0, PR_MODE_HTTP },
76 { "logasap", PR_O_LOGASAP, PR_CAP_FE, 0, 0 },
77 { "nolinger", PR_O_TCP_NOLING, PR_CAP_FE | PR_CAP_BE, 0, 0 },
78 { "persist", PR_O_PERSIST, PR_CAP_BE, 0, 0 },
79 { "srvtcpka", PR_O_TCP_SRV_KA, PR_CAP_BE, 0, 0 },
Willy Tarreaue5733232019-05-22 19:24:06 +020080#ifdef USE_TPROXY
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010081 { "transparent", PR_O_TRANSP, PR_CAP_BE, 0, 0 },
82#else
83 { "transparent", 0, 0, 0, 0 },
84#endif
85
86 { NULL, 0, 0, 0, 0 }
87};
88
89/* proxy->options2 */
90const struct cfg_opt cfg_opts2[] =
91{
Willy Tarreaue5733232019-05-22 19:24:06 +020092#ifdef USE_LINUX_SPLICE
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010093 { "splice-request", PR_O2_SPLIC_REQ, PR_CAP_FE|PR_CAP_BE, 0, 0 },
94 { "splice-response", PR_O2_SPLIC_RTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
95 { "splice-auto", PR_O2_SPLIC_AUT, PR_CAP_FE|PR_CAP_BE, 0, 0 },
96#else
97 { "splice-request", 0, 0, 0, 0 },
98 { "splice-response", 0, 0, 0, 0 },
99 { "splice-auto", 0, 0, 0, 0 },
100#endif
101 { "accept-invalid-http-request", PR_O2_REQBUG_OK, PR_CAP_FE, 0, PR_MODE_HTTP },
102 { "accept-invalid-http-response", PR_O2_RSPBUG_OK, PR_CAP_BE, 0, PR_MODE_HTTP },
103 { "dontlog-normal", PR_O2_NOLOGNORM, PR_CAP_FE, 0, 0 },
104 { "log-separate-errors", PR_O2_LOGERRORS, PR_CAP_FE, 0, 0 },
105 { "log-health-checks", PR_O2_LOGHCHKS, PR_CAP_BE, 0, 0 },
106 { "socket-stats", PR_O2_SOCKSTAT, PR_CAP_FE, 0, 0 },
107 { "tcp-smart-accept", PR_O2_SMARTACC, PR_CAP_FE, 0, 0 },
108 { "tcp-smart-connect", PR_O2_SMARTCON, PR_CAP_BE, 0, 0 },
109 { "independant-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
110 { "independent-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
111 { "http-use-proxy-header", PR_O2_USE_PXHDR, PR_CAP_FE, 0, PR_MODE_HTTP },
112 { "http-pretend-keepalive", PR_O2_FAKE_KA, PR_CAP_BE, 0, PR_MODE_HTTP },
113 { "http-no-delay", PR_O2_NODELAY, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Fauleteb709802019-04-11 22:04:08 +0200114 { "http-use-htx", PR_O2_USE_HTX, PR_CAP_FE|PR_CAP_BE, 0, 0 },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100115 { NULL, 0, 0, 0 }
116};
117
Willy Tarreau977b8e42006-12-29 14:19:17 +0100118/*
Willy Tarreau816eb542007-11-04 07:04:43 +0100119 * This function returns a string containing a name describing capabilities to
120 * report comprehensible error messages. Specifically, it will return the words
Christopher Faulet898566e2016-10-26 11:06:28 +0200121 * "frontend", "backend" when appropriate, or "proxy" for all other
Willy Tarreau816eb542007-11-04 07:04:43 +0100122 * cases including the proxies declared in "listen" mode.
Willy Tarreau977b8e42006-12-29 14:19:17 +0100123 */
Willy Tarreau816eb542007-11-04 07:04:43 +0100124const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +0100125{
Willy Tarreau816eb542007-11-04 07:04:43 +0100126 if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
127 if (cap & PR_CAP_FE)
128 return "frontend";
129 else if (cap & PR_CAP_BE)
130 return "backend";
Willy Tarreau816eb542007-11-04 07:04:43 +0100131 }
132 return "proxy";
Willy Tarreau977b8e42006-12-29 14:19:17 +0100133}
134
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100135/*
136 * This function returns a string containing the mode of the proxy in a format
137 * suitable for error messages.
138 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100139const char *proxy_mode_str(int mode) {
140
141 if (mode == PR_MODE_TCP)
142 return "tcp";
143 else if (mode == PR_MODE_HTTP)
144 return "http";
145 else if (mode == PR_MODE_HEALTH)
146 return "health";
William Lallemandcf62f7e2018-10-26 14:47:40 +0200147 else if (mode == PR_MODE_CLI)
148 return "cli";
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100149 else
150 return "unknown";
151}
152
Willy Tarreauf3950172009-10-10 18:35:51 +0200153/*
154 * This function scans the list of backends and servers to retrieve the first
155 * backend and the first server with the given names, and sets them in both
156 * parameters. It returns zero if either is not found, or non-zero and sets
157 * the ones it did not found to NULL. If a NULL pointer is passed for the
158 * backend, only the pointer to the server will be updated.
159 */
160int get_backend_server(const char *bk_name, const char *sv_name,
161 struct proxy **bk, struct server **sv)
162{
163 struct proxy *p;
164 struct server *s;
Willy Tarreau7ecc4202014-03-15 07:57:11 +0100165 int sid;
Willy Tarreauf3950172009-10-10 18:35:51 +0200166
167 *sv = NULL;
168
Willy Tarreau050536d2012-10-04 08:47:34 +0200169 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200170 if (*sv_name == '#')
171 sid = atoi(sv_name + 1);
172
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200173 p = proxy_be_by_name(bk_name);
Willy Tarreauf3950172009-10-10 18:35:51 +0200174 if (bk)
175 *bk = p;
176 if (!p)
177 return 0;
178
179 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100180 if ((sid >= 0 && s->puid == sid) ||
181 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200182 break;
183 *sv = s;
184 if (!s)
185 return 0;
186 return 1;
187}
188
Willy Tarreaue219db72007-12-03 01:30:13 +0100189/* This function parses a "timeout" statement in a proxy section. It returns
190 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200191 * return zero, it will write an error or warning message into a preallocated
192 * buffer returned at <err>. The trailing is not be written. The function must
193 * be called with <args> pointing to the first command line word, with <proxy>
194 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
195 * As a special case for compatibility with older configs, it also accepts
196 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100197 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200198static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200199 struct proxy *defpx, const char *file, int line,
200 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100201{
202 unsigned timeout;
203 int retval, cap;
204 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200205 int *tv = NULL;
206 int *td = NULL;
Willy Tarreaued446492014-04-28 22:56:38 +0200207 int warn = 0;
Willy Tarreaue219db72007-12-03 01:30:13 +0100208
209 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200210
211 /* simply skip "timeout" but remain compatible with old form */
212 if (strcmp(args[0], "timeout") == 0)
213 args++;
214
Willy Tarreaue219db72007-12-03 01:30:13 +0100215 name = args[0];
Willy Tarreaued446492014-04-28 22:56:38 +0200216 if (!strcmp(args[0], "client") || (!strcmp(args[0], "clitimeout") && (warn = WARN_CLITO_DEPRECATED))) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100217 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100218 tv = &proxy->timeout.client;
219 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100220 cap = PR_CAP_FE;
221 } else if (!strcmp(args[0], "tarpit")) {
222 tv = &proxy->timeout.tarpit;
223 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100224 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100225 } else if (!strcmp(args[0], "http-keep-alive")) {
226 tv = &proxy->timeout.httpka;
227 td = &defpx->timeout.httpka;
228 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100229 } else if (!strcmp(args[0], "http-request")) {
230 tv = &proxy->timeout.httpreq;
231 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200232 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaued446492014-04-28 22:56:38 +0200233 } else if (!strcmp(args[0], "server") || (!strcmp(args[0], "srvtimeout") && (warn = WARN_SRVTO_DEPRECATED))) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100234 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100235 tv = &proxy->timeout.server;
236 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100237 cap = PR_CAP_BE;
Willy Tarreaued446492014-04-28 22:56:38 +0200238 } else if (!strcmp(args[0], "connect") || (!strcmp(args[0], "contimeout") && (warn = WARN_CONTO_DEPRECATED))) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100239 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100240 tv = &proxy->timeout.connect;
241 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100242 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100243 } else if (!strcmp(args[0], "check")) {
244 tv = &proxy->timeout.check;
245 td = &defpx->timeout.check;
246 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100247 } else if (!strcmp(args[0], "queue")) {
248 tv = &proxy->timeout.queue;
249 td = &defpx->timeout.queue;
250 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200251 } else if (!strcmp(args[0], "tunnel")) {
252 tv = &proxy->timeout.tunnel;
253 td = &defpx->timeout.tunnel;
254 cap = PR_CAP_BE;
Willy Tarreau05cdd962014-05-10 14:30:07 +0200255 } else if (!strcmp(args[0], "client-fin")) {
256 tv = &proxy->timeout.clientfin;
257 td = &defpx->timeout.clientfin;
258 cap = PR_CAP_FE;
259 } else if (!strcmp(args[0], "server-fin")) {
260 tv = &proxy->timeout.serverfin;
261 td = &defpx->timeout.serverfin;
262 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100263 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200264 memprintf(err,
265 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreau05cdd962014-05-10 14:30:07 +0200266 "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', "
267 "'client-fin' and 'server-fin' (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200268 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100269 return -1;
270 }
271
272 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200273 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100274 return -1;
275 }
276
277 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +0200278 if (res == PARSE_TIME_OVER) {
279 memprintf(err, "timer overflow in argument '%s' to 'timeout %s' (maximum value is 2147483647 ms or ~24.8 days)",
280 args[1], name);
281 return -1;
282 }
283 else if (res == PARSE_TIME_UNDER) {
284 memprintf(err, "timer underflow in argument '%s' to 'timeout %s' (minimum non-null value is 1 ms)",
285 args[1], name);
286 return -1;
287 }
288 else if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200289 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100290 return -1;
291 }
292
293 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200294 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
295 name, proxy_type_str(proxy), proxy->id,
296 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100297 retval = 1;
298 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200299 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200300 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100301 retval = 1;
302 }
Willy Tarreaued446492014-04-28 22:56:38 +0200303 else if (warn) {
304 if (!already_warned(warn)) {
305 memprintf(err, "the '%s' directive is now deprecated in favor of 'timeout %s', and will not be supported in future versions.",
306 args[0], name);
307 retval = 1;
308 }
309 }
Willy Tarreaue219db72007-12-03 01:30:13 +0100310
Willy Tarreaufac5b592014-05-22 08:24:46 +0200311 if (*args[2] != 0) {
312 memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]);
313 retval = -1;
314 }
315
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200316 *tv = MS_TO_TICKS(timeout);
Willy Tarreaue219db72007-12-03 01:30:13 +0100317 return retval;
318}
319
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100320/* This function parses a "rate-limit" statement in a proxy section. It returns
321 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200322 * return zero, it will write an error or warning message into a preallocated
323 * buffer returned at <err>. The function must be called with <args> pointing
324 * to the first command line word, with <proxy> pointing to the proxy being
325 * parsed, and <defpx> to the default proxy or NULL.
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100326 */
327static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200328 struct proxy *defpx, const char *file, int line,
329 char **err)
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100330{
331 int retval, cap;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200332 char *res;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100333 unsigned int *tv = NULL;
334 unsigned int *td = NULL;
335 unsigned int val;
336
337 retval = 0;
338
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200339 if (strcmp(args[1], "sessions") == 0) {
Willy Tarreau13a34bd2009-05-10 18:52:49 +0200340 tv = &proxy->fe_sps_lim;
341 td = &defpx->fe_sps_lim;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100342 cap = PR_CAP_FE;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200343 }
344 else {
345 memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100346 return -1;
347 }
348
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200349 if (*args[2] == 0) {
350 memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100351 return -1;
352 }
353
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200354 val = strtoul(args[2], &res, 0);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100355 if (*res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200356 memprintf(err, "'%s %s' : unexpected character '%c' in integer value '%s'", args[0], args[1], *res, args[2]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100357 return -1;
358 }
359
360 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200361 memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability",
362 args[0], args[1], proxy_type_str(proxy), proxy->id,
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100363 (cap & PR_CAP_BE) ? "backend" : "frontend");
364 retval = 1;
365 }
366 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200367 memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100368 retval = 1;
369 }
370
371 *tv = val;
372 return retval;
373}
374
Willy Tarreauc35362a2014-04-25 13:58:37 +0200375/* This function parses a "max-keep-alive-queue" statement in a proxy section.
376 * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it
377 * does not return zero, it will write an error or warning message into a
378 * preallocated buffer returned at <err>. The function must be called with
379 * <args> pointing to the first command line word, with <proxy> pointing to
380 * the proxy being parsed, and <defpx> to the default proxy or NULL.
381 */
382static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy,
383 struct proxy *defpx, const char *file, int line,
384 char **err)
385{
386 int retval;
387 char *res;
388 unsigned int val;
389
390 retval = 0;
391
392 if (*args[1] == 0) {
393 memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]);
394 return -1;
395 }
396
397 val = strtol(args[1], &res, 0);
398 if (*res) {
399 memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
400 return -1;
401 }
402
403 if (!(proxy->cap & PR_CAP_BE)) {
404 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
405 args[0], proxy_type_str(proxy), proxy->id);
406 retval = 1;
407 }
408
409 /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */
410 proxy->max_ka_queue = val + 1;
411 return retval;
412}
413
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200414/* This function parses a "declare" statement in a proxy section. It returns -1
415 * if there is any error, 1 for warning, otherwise 0. If it does not return zero,
416 * it will write an error or warning message into a preallocated buffer returned
417 * at <err>. The function must be called with <args> pointing to the first command
418 * line word, with <proxy> pointing to the proxy being parsed, and <defpx> to the
419 * default proxy or NULL.
420 */
421static int proxy_parse_declare(char **args, int section, struct proxy *curpx,
422 struct proxy *defpx, const char *file, int line,
423 char **err)
424{
425 /* Capture keyword wannot be declared in a default proxy. */
426 if (curpx == defpx) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800427 memprintf(err, "'%s' not available in default section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200428 return -1;
429 }
430
Joseph Herlant59dd2952018-11-15 11:46:55 -0800431 /* Capture keywork is only available in frontend. */
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200432 if (!(curpx->cap & PR_CAP_FE)) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800433 memprintf(err, "'%s' only available in frontend or listen section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200434 return -1;
435 }
436
437 /* Check mandatory second keyword. */
438 if (!args[1] || !*args[1]) {
439 memprintf(err, "'%s' needs a second keyword that specify the type of declaration ('capture')", args[0]);
440 return -1;
441 }
442
Joseph Herlant59dd2952018-11-15 11:46:55 -0800443 /* Actually, declare is only available for declaring capture
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200444 * slot, but in the future it can declare maps or variables.
Joseph Herlant59dd2952018-11-15 11:46:55 -0800445 * So, this section permits to check and switch according with
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200446 * the second keyword.
447 */
448 if (strcmp(args[1], "capture") == 0) {
449 char *error = NULL;
450 long len;
451 struct cap_hdr *hdr;
452
453 /* Check the next keyword. */
454 if (!args[2] || !*args[2] ||
455 (strcmp(args[2], "response") != 0 &&
456 strcmp(args[2], "request") != 0)) {
457 memprintf(err, "'%s %s' requires a direction ('request' or 'response')", args[0], args[1]);
458 return -1;
459 }
460
461 /* Check the 'len' keyword. */
462 if (!args[3] || !*args[3] || strcmp(args[3], "len") != 0) {
463 memprintf(err, "'%s %s' requires a capture length ('len')", args[0], args[1]);
464 return -1;
465 }
466
467 /* Check the length value. */
468 if (!args[4] || !*args[4]) {
469 memprintf(err, "'%s %s': 'len' requires a numeric value that represents the "
470 "capture length",
471 args[0], args[1]);
472 return -1;
473 }
474
475 /* convert the length value. */
476 len = strtol(args[4], &error, 10);
477 if (*error != '\0') {
478 memprintf(err, "'%s %s': cannot parse the length '%s'.",
479 args[0], args[1], args[3]);
480 return -1;
481 }
482
483 /* check length. */
484 if (len <= 0) {
485 memprintf(err, "length must be > 0");
486 return -1;
487 }
488
489 /* register the capture. */
Vincent Bernat02779b62016-04-03 13:48:43 +0200490 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200491 hdr->name = NULL; /* not a header capture */
492 hdr->namelen = 0;
493 hdr->len = len;
494 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
495
496 if (strcmp(args[2], "request") == 0) {
497 hdr->next = curpx->req_cap;
498 hdr->index = curpx->nb_req_cap++;
499 curpx->req_cap = hdr;
500 }
501 if (strcmp(args[2], "response") == 0) {
502 hdr->next = curpx->rsp_cap;
503 hdr->index = curpx->nb_rsp_cap++;
504 curpx->rsp_cap = hdr;
505 }
506 return 0;
507 }
508 else {
509 memprintf(err, "unknown declaration type '%s' (supports 'capture')", args[1]);
510 return -1;
511 }
512}
513
Olivier Houcharda254a372019-04-05 15:30:12 +0200514/* This function parses a "retry-on" statement */
515static int
516proxy_parse_retry_on(char **args, int section, struct proxy *curpx,
517 struct proxy *defpx, const char *file, int line,
518 char **err)
519{
520 int i;
521
522 if (!(*args[1])) {
523 memprintf(err, "'%s' needs at least one keyword to specify when to retry", args[0]);
524 return -1;
525 }
526 if (!(curpx->cap & PR_CAP_BE)) {
527 memprintf(err, "'%s' only available in backend or listen section", args[0]);
528 return -1;
529 }
530 curpx->retry_type = 0;
531 for (i = 1; *(args[i]); i++) {
532 if (!strcmp(args[i], "conn-failure"))
533 curpx->retry_type |= PR_RE_CONN_FAILED;
534 else if (!strcmp(args[i], "empty-response"))
535 curpx->retry_type |= PR_RE_DISCONNECTED;
536 else if (!strcmp(args[i], "response-timeout"))
537 curpx->retry_type |= PR_RE_TIMEOUT;
538 else if (!strcmp(args[i], "404"))
539 curpx->retry_type |= PR_RE_404;
540 else if (!strcmp(args[i], "408"))
541 curpx->retry_type |= PR_RE_408;
542 else if (!strcmp(args[i], "425"))
543 curpx->retry_type |= PR_RE_425;
544 else if (!strcmp(args[i], "500"))
545 curpx->retry_type |= PR_RE_500;
546 else if (!strcmp(args[i], "501"))
547 curpx->retry_type |= PR_RE_501;
548 else if (!strcmp(args[i], "502"))
549 curpx->retry_type |= PR_RE_502;
550 else if (!strcmp(args[i], "503"))
551 curpx->retry_type |= PR_RE_503;
552 else if (!strcmp(args[i], "504"))
553 curpx->retry_type |= PR_RE_504;
Olivier Houchard865d8392019-05-03 22:46:27 +0200554 else if (!strcmp(args[i], "0rtt-rejected"))
555 curpx->retry_type |= PR_RE_EARLY_ERROR;
Olivier Houcharde3249a92019-05-03 23:01:47 +0200556 else if (!strcmp(args[i], "junk-response"))
557 curpx->retry_type |= PR_RE_JUNK_REQUEST;
Olivier Houchardddf0e032019-05-10 18:05:40 +0200558 else if (!(strcmp(args[i], "all-retryable-errors")))
559 curpx->retry_type |= PR_RE_CONN_FAILED | PR_RE_DISCONNECTED |
560 PR_RE_TIMEOUT | PR_RE_500 | PR_RE_502 |
561 PR_RE_503 | PR_RE_504 | PR_RE_EARLY_ERROR |
562 PR_RE_JUNK_REQUEST;
Olivier Houcharda254a372019-04-05 15:30:12 +0200563 else if (!strcmp(args[i], "none")) {
564 if (i != 1 || *args[i + 1]) {
565 memprintf(err, "'%s' 'none' keyworld only usable alone", args[0]);
566 return -1;
567 }
568 } else {
569 memprintf(err, "'%s': unknown keyword '%s'", args[0], args[i]);
570 return -1;
571 }
572
573 }
574
575
576 return 0;
577}
578
Willy Tarreauf79d9502014-03-15 07:22:35 +0100579/* This function inserts proxy <px> into the tree of known proxies. The proxy's
580 * name is used as the storing key so it must already have been initialized.
581 */
582void proxy_store_name(struct proxy *px)
583{
584 px->conf.by_name.key = px->id;
585 ebis_insert(&proxy_by_name, &px->conf.by_name);
586}
587
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200588/* Returns a pointer to the first proxy matching capabilities <cap> and id
589 * <id>. NULL is returned if no match is found. If <table> is non-zero, it
590 * only considers proxies having a table.
Willy Tarreaubc216c42011-08-02 11:25:54 +0200591 */
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200592struct proxy *proxy_find_by_id(int id, int cap, int table)
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200593{
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200594 struct eb32_node *n;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200595
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200596 for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) {
597 struct proxy *px = container_of(n, struct proxy, conf.id);
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100598
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200599 if (px->uuid != id)
600 break;
Alex Williams96532db2009-11-01 21:27:13 -0500601
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200602 if ((px->cap & cap) != cap)
603 continue;
Alex Williams96532db2009-11-01 21:27:13 -0500604
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100605 if (table && (!px->table || !px->table->size))
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200606 continue;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100607
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200608 return px;
609 }
610 return NULL;
611}
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100612
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200613/* Returns a pointer to the first proxy matching either name <name>, or id
614 * <name> if <name> begins with a '#'. NULL is returned if no match is found.
615 * If <table> is non-zero, it only considers proxies having a table.
616 */
617struct proxy *proxy_find_by_name(const char *name, int cap, int table)
618{
619 struct proxy *curproxy;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200620
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200621 if (*name == '#') {
622 curproxy = proxy_find_by_id(atoi(name + 1), cap, table);
623 if (curproxy)
Willy Tarreauc739aa82015-05-26 11:35:41 +0200624 return curproxy;
Alex Williams96532db2009-11-01 21:27:13 -0500625 }
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100626 else {
627 struct ebpt_node *node;
628
629 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
630 curproxy = container_of(node, struct proxy, conf.by_name);
Alex Williams96532db2009-11-01 21:27:13 -0500631
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100632 if (strcmp(curproxy->id, name) != 0)
633 break;
634
635 if ((curproxy->cap & cap) != cap)
636 continue;
637
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100638 if (table && (!curproxy->table || !curproxy->table->size))
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200639 continue;
640
Willy Tarreauc739aa82015-05-26 11:35:41 +0200641 return curproxy;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100642 }
643 }
Willy Tarreauc739aa82015-05-26 11:35:41 +0200644 return NULL;
Alex Williams96532db2009-11-01 21:27:13 -0500645}
646
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200647/* Finds the best match for a proxy with capabilities <cap>, name <name> and id
648 * <id>. At most one of <id> or <name> may be different provided that <cap> is
649 * valid. Either <id> or <name> may be left unspecified (0). The purpose is to
650 * find a proxy based on some information from a previous configuration, across
651 * reloads or during information exchange between peers.
652 *
653 * Names are looked up first if present, then IDs are compared if present. In
654 * case of an inexact match whatever is forced in the configuration has
655 * precedence in the following order :
656 * - 1) forced ID (proves a renaming / change of proxy type)
657 * - 2) proxy name+type (may indicate a move if ID differs)
658 * - 3) automatic ID+type (may indicate a renaming)
659 *
660 * Depending on what is found, we can end up in the following situations :
661 *
662 * name id cap | possible causes
663 * -------------+-----------------
664 * -- -- -- | nothing found
665 * -- -- ok | nothing found
666 * -- ok -- | proxy deleted, ID points to next one
667 * -- ok ok | proxy renamed, or deleted with ID pointing to next one
668 * ok -- -- | proxy deleted, but other half with same name still here (before)
669 * ok -- ok | proxy's ID changed (proxy moved in the config file)
670 * ok ok -- | proxy deleted, but other half with same name still here (after)
671 * ok ok ok | perfect match
672 *
673 * Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits :
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200674 * - PR_FBM_MISMATCH_ID : proxy was found but ID differs
675 * (and ID was not zero)
676 * - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs
677 * (and name was not NULL)
678 * - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with
679 * the same name and/or id
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200680 *
681 * Only a valid proxy is returned. If capabilities do not match, NULL is
682 * returned. The caller can check <diff> to report detailed warnings / errors,
683 * and decide whether or not to use what was found.
684 */
685struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff)
686{
687 struct proxy *byname;
688 struct proxy *byid;
689
690 if (!name && !id)
691 return NULL;
692
693 if (diff)
694 *diff = 0;
695
696 byname = byid = NULL;
697
698 if (name) {
699 byname = proxy_find_by_name(name, cap, 0);
700 if (byname && (!id || byname->uuid == id))
701 return byname;
702 }
703
Joseph Herlant59dd2952018-11-15 11:46:55 -0800704 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200705 * - name not set
706 * - name set but not found
707 * - name found, but ID doesn't match.
708 */
709 if (id) {
710 byid = proxy_find_by_id(id, cap, 0);
711 if (byid) {
712 if (byname) {
713 /* id+type found, name+type found, but not all 3.
714 * ID wins only if forced, otherwise name wins.
715 */
716 if (byid->options & PR_O_FORCED_ID) {
717 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200718 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200719 return byid;
720 }
721 else {
722 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200723 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200724 return byname;
725 }
726 }
727
Joseph Herlant59dd2952018-11-15 11:46:55 -0800728 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200729 * - name not set
730 * - name set but not found
731 */
732 if (name && diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200733 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200734 return byid;
735 }
736
737 /* ID not found */
738 if (byname) {
739 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200740 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200741 return byname;
742 }
743 }
744
Joseph Herlant59dd2952018-11-15 11:46:55 -0800745 /* All remaining possibilities will lead to NULL. If we can report more
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200746 * detailed information to the caller about changed types and/or name,
747 * we'll do it. For example, we could detect that "listen foo" was
748 * split into "frontend foo_ft" and "backend foo_bk" if IDs are forced.
749 * - name not set, ID not found
750 * - name not found, ID not set
751 * - name not found, ID not found
752 */
753 if (!diff)
754 return NULL;
755
756 if (name) {
757 byname = proxy_find_by_name(name, 0, 0);
758 if (byname && (!id || byname->uuid == id))
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200759 *diff |= PR_FBM_MISMATCH_PROXYTYPE;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200760 }
761
762 if (id) {
763 byid = proxy_find_by_id(id, 0, 0);
764 if (byid) {
765 if (!name)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200766 *diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200767 else if (byid->options & PR_O_FORCED_ID)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200768 *diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200769 /* otherwise it's a different proxy that was returned */
770 }
771 }
772 return NULL;
773}
774
Willy Tarreaubaaee002006-06-26 02:48:02 +0200775/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100776 * This function finds a server with matching name within selected proxy.
777 * It also checks if there are more matching servers with
778 * requested name as this often leads into unexpected situations.
779 */
780
781struct server *findserver(const struct proxy *px, const char *name) {
782
783 struct server *cursrv, *target = NULL;
784
785 if (!px)
786 return NULL;
787
788 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
789 if (strcmp(cursrv->id, name))
790 continue;
791
792 if (!target) {
793 target = cursrv;
794 continue;
795 }
796
Christopher Faulet767a84b2017-11-24 16:50:31 +0100797 ha_alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
798 name, px->id);
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100799
800 return NULL;
801 }
802
803 return target;
804}
805
Willy Tarreauff01a212009-03-15 13:46:16 +0100806/* This function checks that the designated proxy has no http directives
807 * enabled. It will output a warning if there are, and will fix some of them.
808 * It returns the number of fatal errors encountered. This should be called
809 * at the end of the configuration parsing if the proxy is not in http mode.
810 * The <file> argument is used to construct the error message.
811 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200812int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100813{
814 if (curproxy->cookie_name != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100815 ha_warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
816 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100817 }
818 if (curproxy->rsp_exp != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100819 ha_warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
820 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100821 }
822 if (curproxy->req_exp != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100823 ha_warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
824 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100825 }
826 if (curproxy->monitor_uri != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100827 ha_warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
828 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100829 }
Willy Tarreauf3e49f92009-10-03 12:21:20 +0200830 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100831 curproxy->lbprm.algo &= ~BE_LB_ALGO;
832 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100833 ha_warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
834 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100835 }
Willy Tarreau17804162009-11-09 21:27:51 +0100836 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
837 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Christopher Faulet767a84b2017-11-24 16:50:31 +0100838 ha_warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
839 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
840 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau17804162009-11-09 21:27:51 +0100841 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200842 if (curproxy->conf.logformat_string == default_http_log_format ||
843 curproxy->conf.logformat_string == clf_http_log_format) {
844 /* Note: we don't change the directive's file:line number */
845 curproxy->conf.logformat_string = default_tcp_log_format;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100846 ha_warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
847 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
848 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau196729e2012-05-31 19:30:26 +0200849 }
850
Willy Tarreauff01a212009-03-15 13:46:16 +0100851 return 0;
852}
853
Willy Tarreau237250c2011-07-29 01:49:03 +0200854/* Perform the most basic initialization of a proxy :
855 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +0200856 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +0200857 */
858void init_new_proxy(struct proxy *p)
859{
860 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100861 p->obj_type = OBJ_TYPE_PROXY;
Patrick Hemmer0355dab2018-05-11 12:52:31 -0400862 p->pendconns = EB_ROOT;
Willy Tarreau237250c2011-07-29 01:49:03 +0200863 LIST_INIT(&p->acl);
864 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200865 LIST_INIT(&p->http_res_rules);
Willy Tarreau353bc9f2014-04-28 22:05:31 +0200866 LIST_INIT(&p->block_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200867 LIST_INIT(&p->redirect_rules);
868 LIST_INIT(&p->mon_fail_cond);
869 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200870 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200871 LIST_INIT(&p->persist_rules);
872 LIST_INIT(&p->sticking_rules);
873 LIST_INIT(&p->storersp_rules);
874 LIST_INIT(&p->tcp_req.inspect_rules);
875 LIST_INIT(&p->tcp_rep.inspect_rules);
876 LIST_INIT(&p->tcp_req.l4_rules);
Willy Tarreau620408f2016-10-21 16:37:51 +0200877 LIST_INIT(&p->tcp_req.l5_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200878 LIST_INIT(&p->req_add);
879 LIST_INIT(&p->rsp_add);
880 LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +0200881 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +0100882 LIST_INIT(&p->logformat);
Dragan Dosen0b85ece2015-09-25 19:17:44 +0200883 LIST_INIT(&p->logformat_sd);
William Lallemanda73203e2012-03-12 12:48:57 +0100884 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200885 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +0200886 LIST_INIT(&p->conf.listeners);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200887 LIST_INIT(&p->conf.args.list);
Baptiste Assmann5ecb77f2013-10-06 23:24:13 +0200888 LIST_INIT(&p->tcpcheck_rules);
Christopher Faulet443ea1a2016-02-04 13:40:26 +0100889 LIST_INIT(&p->filter_configs);
Willy Tarreau237250c2011-07-29 01:49:03 +0200890
891 /* Timeouts are defined as -1 */
892 proxy_reset_timeouts(p);
893 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +0200894
895 /* initial uuid is unassigned (-1) */
896 p->uuid = -1;
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200897
Christopher Faulet1d2b5862019-04-12 16:10:51 +0200898 /* HTX is the default mode, for HTTP and TCP */
899 p->options2 |= PR_O2_USE_HTX;
900
Olivier Houcharda254a372019-04-05 15:30:12 +0200901 /* Default to only allow L4 retries */
902 p->retry_type = PR_RE_CONN_FAILED;
903
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100904 HA_SPIN_INIT(&p->lock);
Willy Tarreau237250c2011-07-29 01:49:03 +0200905}
906
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100907/*
Willy Tarreau2ff76222007-04-09 19:29:56 +0200908 * This function creates all proxy sockets. It should be done very early,
909 * typically before privileges are dropped. The sockets will be registered
910 * but not added to any fd_set, in order not to loose them across the fork().
Willy Tarreau562515c2011-07-25 08:11:52 +0200911 * The proxies also start in READY state because they all have their listeners
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200912 * bound.
Willy Tarreau2ff76222007-04-09 19:29:56 +0200913 *
914 * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
915 * Retryable errors will only be printed if <verbose> is not zero.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200916 */
917int start_proxies(int verbose)
918{
919 struct proxy *curproxy;
920 struct listener *listener;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100921 int lerr, err = ERR_NONE;
922 int pxerr;
923 char msg[100];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200924
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100925 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200926 if (curproxy->state != PR_STNEW)
927 continue; /* already initialized */
928
929 pxerr = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200930 list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
Willy Tarreaue6b98942007-10-29 01:09:36 +0100931 if (listener->state != LI_ASSIGNED)
932 continue; /* already started */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200933
Emeric Bruncf20bf12010-10-22 16:06:11 +0200934 lerr = listener->proto->bind(listener, msg, sizeof(msg));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200935
Willy Tarreaue6b98942007-10-29 01:09:36 +0100936 /* errors are reported if <verbose> is set or if they are fatal */
937 if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
938 if (lerr & ERR_ALERT)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100939 ha_alert("Starting %s %s: %s\n",
940 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaue6b98942007-10-29 01:09:36 +0100941 else if (lerr & ERR_WARN)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100942 ha_warning("Starting %s %s: %s\n",
943 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200944 }
945
Willy Tarreaue6b98942007-10-29 01:09:36 +0100946 err |= lerr;
947 if (lerr & (ERR_ABORT | ERR_FATAL)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200948 pxerr |= 1;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100949 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200950 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100951 else if (lerr & ERR_CODE) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200952 pxerr |= 1;
953 continue;
954 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200955 }
956
957 if (!pxerr) {
Willy Tarreau562515c2011-07-25 08:11:52 +0200958 curproxy->state = PR_STREADY;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200959 send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
960 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100961
962 if (err & ERR_ABORT)
963 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200964 }
965
966 return err;
967}
968
969
970/*
Willy Tarreau918ff602011-07-25 16:33:49 +0200971 * This is the proxy management task. It enables proxies when there are enough
Willy Tarreau87b09662015-04-03 00:22:06 +0200972 * free streams, or stops them when the table is full. It is designed to be
Willy Tarreau918ff602011-07-25 16:33:49 +0200973 * called as a task which is woken up upon stopping or when rate limiting must
974 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200975 */
Olivier Houchard9f6af332018-05-25 14:04:04 +0200976struct task *manage_proxy(struct task *t, void *context, unsigned short state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200977{
Olivier Houchard9f6af332018-05-25 14:04:04 +0200978 struct proxy *p = context;
Willy Tarreau918ff602011-07-25 16:33:49 +0200979 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +0100980 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200981
Willy Tarreau918ff602011-07-25 16:33:49 +0200982 /* We should periodically try to enable listeners waiting for a
983 * global resource here.
984 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200985
Willy Tarreau918ff602011-07-25 16:33:49 +0200986 /* first, let's check if we need to stop the proxy */
987 if (unlikely(stopping && p->state != PR_STSTOPPED)) {
988 int t;
989 t = tick_remain(now_ms, p->stop_time);
990 if (t == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100991 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
992 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau918ff602011-07-25 16:33:49 +0200993 send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
994 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
995 stop_proxy(p);
996 /* try to free more memory */
Willy Tarreaubafbe012017-11-24 17:34:44 +0100997 pool_gc(NULL);
Willy Tarreau918ff602011-07-25 16:33:49 +0200998 }
999 else {
1000 next = tick_first(next, p->stop_time);
1001 }
1002 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001003
Willy Tarreau3a925c12013-09-04 17:54:01 +02001004 /* If the proxy holds a stick table, we need to purge all unused
1005 * entries. These are all the ones in the table with ref_cnt == 0
1006 * and all the ones in the pool used to allocate new entries. Any
Willy Tarreau87b09662015-04-03 00:22:06 +02001007 * entry attached to an existing stream waiting for a store will
Willy Tarreau3a925c12013-09-04 17:54:01 +02001008 * be in neither list. Any entry being dumped will have ref_cnt > 0.
1009 * However we protect tables that are being synced to peers.
1010 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001011 if (unlikely(stopping && p->state == PR_STSTOPPED && p->table && p->table->current)) {
1012 if (!p->table->syncing) {
1013 stktable_trash_oldest(p->table, p->table->current);
Willy Tarreaubafbe012017-11-24 17:34:44 +01001014 pool_gc(NULL);
Willy Tarreau3a925c12013-09-04 17:54:01 +02001015 }
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001016 if (p->table->current) {
Willy Tarreau3a925c12013-09-04 17:54:01 +02001017 /* some entries still remain, let's recheck in one second */
1018 next = tick_first(next, tick_add(now_ms, 1000));
1019 }
1020 }
1021
Willy Tarreau918ff602011-07-25 16:33:49 +02001022 /* the rest below is just for frontends */
1023 if (!(p->cap & PR_CAP_FE))
1024 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001025
Willy Tarreau918ff602011-07-25 16:33:49 +02001026 /* check the various reasons we may find to block the frontend */
1027 if (unlikely(p->feconn >= p->maxconn)) {
1028 if (p->state == PR_STREADY)
1029 p->state = PR_STFULL;
1030 goto out;
1031 }
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001032
Willy Tarreau918ff602011-07-25 16:33:49 +02001033 /* OK we have no reason to block, so let's unblock if we were blocking */
1034 if (p->state == PR_STFULL)
1035 p->state = PR_STREADY;
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001036
Willy Tarreau918ff602011-07-25 16:33:49 +02001037 if (p->fe_sps_lim &&
1038 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
1039 /* we're blocking because a limit was reached on the number of
1040 * requests/s on the frontend. We want to re-check ASAP, which
1041 * means in 1 ms before estimated expiration date, because the
1042 * timer will have settled down.
1043 */
1044 next = tick_first(next, tick_add(now_ms, wait));
1045 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001046 }
Willy Tarreau918ff602011-07-25 16:33:49 +02001047
1048 /* The proxy is not limited so we can re-enable any waiting listener */
1049 if (!LIST_ISEMPTY(&p->listener_queue))
1050 dequeue_all_listeners(&p->listener_queue);
1051 out:
1052 t->expire = next;
1053 task_queue(t);
1054 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001055}
1056
1057
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001058static int proxy_parse_hard_stop_after(char **args, int section_type, struct proxy *curpx,
1059 struct proxy *defpx, const char *file, int line,
1060 char **err)
1061{
1062 const char *res;
1063
1064 if (!*args[1]) {
1065 memprintf(err, "'%s' expects <time> as argument.\n", args[0]);
1066 return -1;
1067 }
1068 res = parse_time_err(args[1], &global.hard_stop_after, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02001069 if (res == PARSE_TIME_OVER) {
1070 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
1071 args[1], args[0]);
1072 return -1;
1073 }
1074 else if (res == PARSE_TIME_UNDER) {
1075 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
1076 args[1], args[0]);
1077 return -1;
1078 }
1079 else if (res) {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001080 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
1081 return -1;
1082 }
1083 return 0;
1084}
1085
Olivier Houchard9f6af332018-05-25 14:04:04 +02001086struct task *hard_stop(struct task *t, void *context, unsigned short state)
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001087{
1088 struct proxy *p;
1089 struct stream *s;
1090
1091 if (killed) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001092 ha_warning("Some tasks resisted to hard-stop, exiting now.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001093 send_log(NULL, LOG_WARNING, "Some tasks resisted to hard-stop, exiting now.\n");
Willy Tarreau7067b3a2019-06-02 11:11:29 +02001094 killed = 2;
1095 t->expire = TICK_ETERNITY;
1096 return t;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001097 }
1098
Christopher Faulet767a84b2017-11-24 16:50:31 +01001099 ha_warning("soft-stop running for too long, performing a hard-stop.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001100 send_log(NULL, LOG_WARNING, "soft-stop running for too long, performing a hard-stop.\n");
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001101 p = proxies_list;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001102 while (p) {
1103 if ((p->cap & PR_CAP_FE) && (p->feconn > 0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001104 ha_warning("Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1105 p->id, p->feconn);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001106 send_log(p, LOG_WARNING, "Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1107 p->id, p->feconn);
1108 }
1109 p = p->next;
1110 }
1111 list_for_each_entry(s, &streams, list) {
1112 stream_shutdown(s, SF_ERR_KILLED);
1113 }
1114
1115 killed = 1;
1116 t->expire = tick_add(now_ms, MS_TO_TICKS(1000));
1117 return t;
1118}
1119
Willy Tarreaubaaee002006-06-26 02:48:02 +02001120/*
1121 * this function disables health-check servers so that the process will quickly be ignored
1122 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
1123 * time will not be used since it would already not listen anymore to the socket.
1124 */
1125void soft_stop(void)
1126{
1127 struct proxy *p;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001128 struct peers *prs;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001129 struct task *task;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001130
1131 stopping = 1;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001132 if (tick_isset(global.hard_stop_after)) {
Emeric Brunc60def82017-09-27 14:59:38 +02001133 task = task_new(MAX_THREADS_MASK);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001134 if (task) {
1135 task->process = hard_stop;
1136 task_schedule(task, tick_add(now_ms, global.hard_stop_after));
1137 }
1138 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001139 ha_alert("out of memory trying to allocate the hard-stop task.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001140 }
1141 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001142 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001143 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001144 while (p) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001145 /* Zombie proxy, let's close the file descriptors */
1146 if (p->state == PR_STSTOPPED &&
1147 !LIST_ISEMPTY(&p->conf.listeners) &&
1148 LIST_ELEM(p->conf.listeners.n,
1149 struct listener *, by_fe)->state >= LI_ZOMBIE) {
1150 struct listener *l;
1151 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1152 if (l->state >= LI_ZOMBIE)
1153 close(l->fd);
1154 l->state = LI_INIT;
1155 }
1156 }
1157
Willy Tarreaubaaee002006-06-26 02:48:02 +02001158 if (p->state != PR_STSTOPPED) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001159 ha_warning("Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace);
Willy Tarreauf8fbcef2008-10-10 17:51:34 +02001160 send_log(p, LOG_WARNING, "Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace);
Willy Tarreau0c303ee2008-07-07 00:09:58 +02001161 p->stop_time = tick_add(now_ms, p->grace);
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001162
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001163 /* Note: do not wake up stopped proxies' task nor their tables'
1164 * tasks as these ones might point to already released entries.
1165 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001166 if (p->table && p->table->size && p->table->sync_task)
1167 task_wakeup(p->table->sync_task, TASK_WOKEN_MSG);
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001168
1169 if (p->task)
1170 task_wakeup(p->task, TASK_WOKEN_MSG);
1171 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001172 p = p->next;
1173 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001174
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001175 prs = cfg_peers;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001176 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001177 if (prs->peers_fe)
1178 stop_proxy(prs->peers_fe);
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001179 prs = prs->next;
1180 }
Willy Tarreaud0807c32010-08-27 18:26:11 +02001181 /* signal zero is used to broadcast the "stopping" event */
1182 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001183}
1184
1185
Willy Tarreaube58c382011-07-24 18:28:10 +02001186/* Temporarily disables listening on all of the proxy's listeners. Upon
1187 * success, the proxy enters the PR_PAUSED state. If disabling at least one
1188 * listener returns an error, then the proxy state is set to PR_STERROR
Willy Tarreauce8fe252011-09-07 19:14:57 +02001189 * because we don't know how to resume from this. The function returns 0
1190 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001191 */
Willy Tarreauce8fe252011-09-07 19:14:57 +02001192int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001193{
1194 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +02001195
1196 if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
1197 p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
1198 return 1;
1199
Christopher Faulet767a84b2017-11-24 16:50:31 +01001200 ha_warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001201 send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
1202
Willy Tarreau4348fad2012-09-20 16:48:07 +02001203 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreaube58c382011-07-24 18:28:10 +02001204 if (!pause_listener(l))
Willy Tarreaubaaee002006-06-26 02:48:02 +02001205 p->state = PR_STERROR;
1206 }
Willy Tarreauce8fe252011-09-07 19:14:57 +02001207
1208 if (p->state == PR_STERROR) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001209 ha_warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001210 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
1211 return 0;
1212 }
1213
1214 p->state = PR_STPAUSED;
1215 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +02001216}
1217
Olivier Houchard1fc05162017-04-06 01:05:05 +02001218/* This function makes the proxy unusable, but keeps the listening sockets
1219 * opened, so that if any process requests them, we are able to serve them.
1220 * This should only be called early, before we started accepting requests.
1221 */
1222void zombify_proxy(struct proxy *p)
1223{
1224 struct listener *l;
1225 struct listener *first_to_listen = NULL;
1226
1227 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1228 enum li_state oldstate = l->state;
1229
1230 unbind_listener_no_close(l);
1231 if (l->state >= LI_ASSIGNED) {
1232 delete_listener(l);
Olivier Houchard1fc05162017-04-06 01:05:05 +02001233 }
1234 /*
1235 * Pretend we're still up and running so that the fd
1236 * will be sent if asked.
1237 */
1238 l->state = LI_ZOMBIE;
1239 if (!first_to_listen && oldstate >= LI_LISTEN)
1240 first_to_listen = l;
1241 }
1242 /* Quick hack : at stop time, to know we have to close the sockets
1243 * despite the proxy being marked as stopped, make the first listener
1244 * of the listener list an active one, so that we don't have to
1245 * parse the whole list to be sure.
1246 */
1247 if (first_to_listen && LIST_ELEM(p->conf.listeners.n,
1248 struct listener *, by_fe) != first_to_listen) {
1249 LIST_DEL(&l->by_fe);
1250 LIST_ADD(&p->conf.listeners, &l->by_fe);
1251 }
1252
1253 p->state = PR_STSTOPPED;
1254}
Willy Tarreauda250db2008-10-12 12:07:48 +02001255
1256/*
1257 * This function completely stops a proxy and releases its listeners. It has
1258 * to be called when going down in order to release the ports so that another
1259 * process may bind to them. It must also be called on disabled proxies at the
William Lallemandc59f9882018-11-16 16:57:21 +01001260 * end of start-up. If all listeners are closed, the proxy is set to the
Willy Tarreau6d79ced2019-07-24 17:42:44 +02001261 * PR_STSTOPPED state. The function takes the proxy's lock so it's safe to
1262 * call from multiple places.
Willy Tarreauda250db2008-10-12 12:07:48 +02001263 */
1264void stop_proxy(struct proxy *p)
1265{
1266 struct listener *l;
William Lallemandc59f9882018-11-16 16:57:21 +01001267 int nostop = 0;
Willy Tarreauda250db2008-10-12 12:07:48 +02001268
Willy Tarreau6d79ced2019-07-24 17:42:44 +02001269 HA_SPIN_LOCK(PROXY_LOCK, &p->lock);
1270
Willy Tarreau4348fad2012-09-20 16:48:07 +02001271 list_for_each_entry(l, &p->conf.listeners, by_fe) {
William Lallemandc59f9882018-11-16 16:57:21 +01001272 if (l->options & LI_O_NOSTOP) {
1273 HA_ATOMIC_ADD(&unstoppable_jobs, 1);
1274 nostop = 1;
1275 continue;
1276 }
Willy Tarreauda250db2008-10-12 12:07:48 +02001277 unbind_listener(l);
1278 if (l->state >= LI_ASSIGNED) {
1279 delete_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001280 }
1281 }
William Lallemandc59f9882018-11-16 16:57:21 +01001282 if (!nostop)
1283 p->state = PR_STSTOPPED;
Willy Tarreau6d79ced2019-07-24 17:42:44 +02001284
1285 HA_SPIN_UNLOCK(PROXY_LOCK, &p->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001286}
1287
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001288/* This function resumes listening on the specified proxy. It scans all of its
1289 * listeners and tries to enable them all. If any of them fails, the proxy is
1290 * put back to the paused state. It returns 1 upon success, or zero if an error
1291 * is encountered.
1292 */
1293int resume_proxy(struct proxy *p)
1294{
1295 struct listener *l;
1296 int fail;
1297
1298 if (p->state != PR_STPAUSED)
1299 return 1;
1300
Christopher Faulet767a84b2017-11-24 16:50:31 +01001301 ha_warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001302 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
1303
1304 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +02001305 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001306 if (!resume_listener(l)) {
1307 int port;
1308
1309 port = get_host_port(&l->addr);
1310 if (port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001311 ha_warning("Port %d busy while trying to enable %s %s.\n",
1312 port, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001313 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
1314 port, proxy_cap_str(p->cap), p->id);
1315 }
1316 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001317 ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
1318 l->luid, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001319 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
1320 l->luid, proxy_cap_str(p->cap), p->id);
1321 }
1322
1323 /* Another port might have been enabled. Let's stop everything. */
1324 fail = 1;
1325 break;
1326 }
1327 }
1328
1329 p->state = PR_STREADY;
1330 if (fail) {
1331 pause_proxy(p);
1332 return 0;
1333 }
1334 return 1;
1335}
1336
Willy Tarreaubaaee002006-06-26 02:48:02 +02001337/*
1338 * This function temporarily disables listening so that another new instance
1339 * can start listening. It is designed to be called upon reception of a
1340 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
1341 * the proxy, or a SIGTTIN can be sent to listen again.
1342 */
1343void pause_proxies(void)
1344{
1345 int err;
1346 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001347 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001348
1349 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001350 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001351 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001352 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +02001353 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001354 p = p->next;
1355 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001356
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001357 prs = cfg_peers;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001358 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001359 if (prs->peers_fe)
1360 err |= !pause_proxy(prs->peers_fe);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001361 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001362 }
1363
Willy Tarreaubaaee002006-06-26 02:48:02 +02001364 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001365 ha_warning("Some proxies refused to pause, performing soft stop now.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02001366 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
1367 soft_stop();
1368 }
1369}
1370
1371
1372/*
1373 * This function reactivates listening. This can be used after a call to
1374 * sig_pause(), for example when a new instance has failed starting up.
1375 * It is designed to be called upon reception of a SIGTTIN.
1376 */
Willy Tarreaube58c382011-07-24 18:28:10 +02001377void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001378{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001379 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001380 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001381 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001382
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001383 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001384 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001385 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001386 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001387 err |= !resume_proxy(p);
1388 p = p->next;
1389 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001390
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001391 prs = cfg_peers;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001392 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001393 if (prs->peers_fe)
1394 err |= !resume_proxy(prs->peers_fe);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001395 prs = prs->next;
1396 }
Willy Tarreaube58c382011-07-24 18:28:10 +02001397
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001398 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001399 ha_warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001400 send_log(p, LOG_WARNING, "Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02001401 }
1402}
1403
Willy Tarreau87b09662015-04-03 00:22:06 +02001404/* Set current stream's backend to <be>. Nothing is done if the
1405 * stream already had a backend assigned, which is indicated by
Willy Tarreaue7dff022015-04-03 01:14:29 +02001406 * s->flags & SF_BE_ASSIGNED.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001407 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001408 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001409 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001410int stream_set_backend(struct stream *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001411{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001412 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001413 return 1;
Christopher Faulet41179042016-06-21 11:54:52 +02001414
1415 if (flt_set_stream_backend(s, be) < 0)
1416 return 0;
1417
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001418 s->be = be;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001419 HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
1420 HA_ATOMIC_ADD(&be->beconn, 1));
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001421 proxy_inc_be_ctr(be);
1422
Willy Tarreau3e451842019-02-01 15:06:09 +01001423 /* HTX/legacy must match */
Christopher Fauletbbe68542019-04-08 10:53:51 +02001424 if ((strm_fe(s)->options2 ^ be->options2) & PR_O2_USE_HTX)
Willy Tarreau3e451842019-02-01 15:06:09 +01001425 return 0;
1426
Willy Tarreau87b09662015-04-03 00:22:06 +02001427 /* assign new parameters to the stream from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +02001428 s->si[1].flags &= ~SI_FL_INDEP_STR;
1429 if (be->options2 & PR_O2_INDEPSTR)
1430 s->si[1].flags |= SI_FL_INDEP_STR;
1431
Hongbo Longe39683c2017-03-10 18:41:51 +01001432 if (tick_isset(be->timeout.serverfin))
1433 s->si[1].hcto = be->timeout.serverfin;
1434
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001435 /* We want to enable the backend-specific analysers except those which
1436 * were already run as part of the frontend/listener. Note that it would
1437 * be more reliable to store the list of analysers that have been run,
1438 * but what we do here is OK for now.
1439 */
Christopher Faulet70e2f272017-01-09 16:33:19 +01001440 s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001441
Willy Tarreau51aecc72009-07-12 09:47:04 +02001442 /* If the target backend requires HTTP processing, we have to allocate
Willy Tarreaueee5b512015-04-03 23:46:31 +02001443 * the HTTP transaction and hdr_idx if we did not have one.
Willy Tarreau51aecc72009-07-12 09:47:04 +02001444 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001445 if (unlikely(!s->txn && be->http_needed)) {
1446 if (unlikely(!http_alloc_txn(s)))
Willy Tarreau51aecc72009-07-12 09:47:04 +02001447 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +02001448
1449 /* and now initialize the HTTP transaction state */
1450 http_init_txn(s);
Willy Tarreau51aecc72009-07-12 09:47:04 +02001451 }
1452
Christopher Faulet309c6412015-12-02 09:57:32 +01001453 /* Be sure to filter request headers if the backend is an HTTP proxy and
1454 * if there are filters attached to the stream. */
1455 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +01001456 s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +01001457
Willy Tarreaueee5b512015-04-03 23:46:31 +02001458 if (s->txn) {
1459 if (be->options2 & PR_O2_RSPBUG_OK)
1460 s->txn->rsp.err_pos = -1; /* let buggy responses pass */
Willy Tarreau4e21ff92014-09-30 18:44:22 +02001461
Willy Tarreaueee5b512015-04-03 23:46:31 +02001462 /* If we chain to an HTTP backend running a different HTTP mode, we
1463 * have to re-adjust the desired keep-alive/close mode to accommodate
1464 * both the frontend's and the backend's modes.
1465 */
Willy Tarreaud0d8da92015-04-04 02:10:38 +02001466 if (strm_fe(s)->mode == PR_MODE_HTTP && be->mode == PR_MODE_HTTP &&
1467 ((strm_fe(s)->options & PR_O_HTTP_MODE) != (be->options & PR_O_HTTP_MODE)))
Willy Tarreaueee5b512015-04-03 23:46:31 +02001468 http_adjust_conn_mode(s, s->txn, &s->txn->req);
Willy Tarreau80a92c02014-03-12 10:41:13 +01001469
Christopher Fauletbbe68542019-04-08 10:53:51 +02001470 /* If we chain a TCP frontend to an HTX backend, we must upgrade
1471 * the client mux */
1472 if (!IS_HTX_STRM(s) && be->mode == PR_MODE_HTTP && (be->options2 & PR_O2_USE_HTX)) {
1473 struct connection *conn = objt_conn(strm_sess(s)->origin);
1474 struct conn_stream *cs = objt_cs(s->si[0].end);
1475
1476 if (conn && cs) {
1477 si_rx_endp_more(&s->si[0]);
Olivier Houchard13f556e2019-07-03 13:08:18 +02001478 /* Make sure we're unsubscribed, the the new
1479 * mux will probably want to subscribe to
1480 * the underlying XPRT
1481 */
1482 if (s->si[0].wait_event.events)
1483 conn->mux->unsubscribe(cs, s->si[0].wait_event.events,
1484 &s->si[0].wait_event);
Christopher Fauletbbe68542019-04-08 10:53:51 +02001485 if (conn_upgrade_mux_fe(conn, cs, &s->req.buf, ist(""), PROTO_MODE_HTX) == -1)
1486 return 0;
Olivier Houchard1a8febc2019-07-31 18:05:26 +02001487 if (!strcmp(conn->mux->name, "H2")) {
1488 /* For HTTP/2, destroy the conn_stream,
1489 * disable logging, and pretend that we
1490 * failed, to that the stream is
1491 * silently destroyed. The new mux
1492 * will create new streams.
1493 */
1494 cs_destroy(cs);
1495 si_detach_endpoint(&s->si[0]);
1496 s->logs.logwait = 0;
1497 s->logs.level = 0;
1498 s->flags |= SF_IGNORE;
1499 return 0;
1500 }
Christopher Fauletbbe68542019-04-08 10:53:51 +02001501 }
1502 }
1503
Willy Tarreaueee5b512015-04-03 23:46:31 +02001504 /* If an LB algorithm needs to access some pre-parsed body contents,
1505 * we must not start to forward anything until the connection is
1506 * confirmed otherwise we'll lose the pointer to these data and
1507 * prevent the hash from being doable again after a redispatch.
1508 */
1509 if (be->mode == PR_MODE_HTTP &&
1510 (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM))
1511 s->txn->req.flags |= HTTP_MSGF_WAIT_CONN;
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001512
1513 /* we may request to parse a request body */
1514 if ((be->options & PR_O_WREQ_BODY) &&
1515 (s->txn->req.body_len || (s->txn->req.flags & HTTP_MSGF_TE_CHNK)))
1516 s->req.analysers |= AN_REQ_HTTP_BODY;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001517 }
1518
1519 s->flags |= SF_BE_ASSIGNED;
Willy Tarreau96e31212011-05-30 18:10:30 +02001520 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001521 s->req.flags |= CF_NEVER_WAIT;
1522 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02001523 }
1524
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001525 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001526}
1527
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001528/* Capture a bad request or response and archive it in the proxy's structure.
1529 * It is relatively protocol-agnostic so it requires that a number of elements
1530 * are passed :
1531 * - <proxy> is the proxy where the error was detected and where the snapshot
1532 * needs to be stored
Joseph Herlant59dd2952018-11-15 11:46:55 -08001533 * - <is_back> indicates that the error happened when receiving the response
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001534 * - <other_end> is a pointer to the proxy on the other side when known
1535 * - <target> is the target of the connection, usually a server or a proxy
1536 * - <sess> is the session which experienced the error
1537 * - <ctx> may be NULL or should contain any info relevant to the protocol
1538 * - <buf> is the buffer containing the offending data
1539 * - <buf_ofs> is the position of this buffer's input data in the input
1540 * stream, starting at zero. It may be passed as zero if unknown.
1541 * - <buf_out> is the portion of <buf->data> which was already forwarded and
1542 * which precedes the buffer's input. The buffer's input starts at
1543 * buf->head + buf_out.
1544 * - <err_pos> is the pointer to the faulty byte in the buffer's input.
1545 * - <show> is the callback to use to display <ctx>. It may be NULL.
1546 */
1547void proxy_capture_error(struct proxy *proxy, int is_back,
1548 struct proxy *other_end, enum obj_type *target,
1549 const struct session *sess,
1550 const struct buffer *buf, long buf_ofs,
1551 unsigned int buf_out, unsigned int err_pos,
1552 const union error_snapshot_ctx *ctx,
1553 void (*show)(struct buffer *, const struct error_snapshot *))
1554{
1555 struct error_snapshot *es;
1556 unsigned int buf_len;
1557 int len1, len2;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001558 unsigned int ev_id;
1559
1560 ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
1561
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001562 buf_len = b_data(buf) - buf_out;
1563
1564 es = malloc(sizeof(*es) + buf_len);
Willy Tarreauc55015e2018-09-07 19:02:32 +02001565 if (!es)
1566 return;
1567
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001568 es->buf_len = buf_len;
1569 es->ev_id = ev_id;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001570
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001571 len1 = b_size(buf) - buf_len;
1572 if (len1 > buf_len)
1573 len1 = buf_len;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001574
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001575 if (len1) {
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001576 memcpy(es->buf, b_peek(buf, buf_out), len1);
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001577 len2 = buf_len - len1;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001578 if (len2)
1579 memcpy(es->buf + len1, b_orig(buf), len2);
1580 }
1581
1582 es->buf_err = err_pos;
1583 es->when = date; // user-visible date
1584 es->srv = objt_server(target);
1585 es->oe = other_end;
1586 if (objt_conn(sess->origin))
1587 es->src = __objt_conn(sess->origin)->addr.from;
1588 else
1589 memset(&es->src, 0, sizeof(es->src));
1590
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001591 es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
1592 es->buf_out = buf_out;
1593 es->buf_ofs = buf_ofs;
1594
1595 /* be sure to indicate the offset of the first IN byte */
1596 if (es->buf_ofs >= es->buf_len)
1597 es->buf_ofs -= es->buf_len;
1598 else
1599 es->buf_ofs = 0;
1600
1601 /* protocol-specific part now */
1602 if (ctx)
1603 es->ctx = *ctx;
1604 else
1605 memset(&es->ctx, 0, sizeof(es->ctx));
1606 es->show = show;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001607
1608 /* note: we still lock since we have to be certain that nobody is
1609 * dumping the output while we free.
1610 */
1611 HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
1612 if (is_back) {
1613 es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
1614 } else {
1615 es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
1616 }
1617 free(es);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001618 HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
1619}
1620
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001621/* Configure all proxies which lack a maxconn setting to use the global one by
1622 * default. This avoids the common mistake consisting in setting maxconn only
1623 * in the global section and discovering the hard way that it doesn't propagate
1624 * through the frontends. These values are also propagated through the various
1625 * targetted backends, whose fullconn is finally calculated if not yet set.
1626 */
1627void proxy_adjust_all_maxconn()
1628{
1629 struct proxy *curproxy;
1630 struct switching_rule *swrule1, *swrule2;
1631
1632 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1633 if (curproxy->state == PR_STSTOPPED)
1634 continue;
1635
1636 if (!(curproxy->cap & PR_CAP_FE))
1637 continue;
1638
1639 if (!curproxy->maxconn)
1640 curproxy->maxconn = global.maxconn;
1641
1642 /* update the target backend's fullconn count : default_backend */
1643 if (curproxy->defbe.be)
1644 curproxy->defbe.be->tot_fe_maxconn += curproxy->maxconn;
1645 else if ((curproxy->cap & PR_CAP_LISTEN) == PR_CAP_LISTEN)
1646 curproxy->tot_fe_maxconn += curproxy->maxconn;
1647
1648 list_for_each_entry(swrule1, &curproxy->switching_rules, list) {
1649 /* For each target of switching rules, we update their
1650 * tot_fe_maxconn, except if a previous rule points to
1651 * the same backend or to the default backend.
1652 */
1653 if (swrule1->be.backend != curproxy->defbe.be) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001654 /* note: swrule1->be.backend isn't a backend if the rule
1655 * is dynamic, it's an expression instead, so it must not
1656 * be dereferenced as a backend before being certain it is.
1657 */
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001658 list_for_each_entry(swrule2, &curproxy->switching_rules, list) {
1659 if (swrule2 == swrule1) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001660 if (!swrule1->dynamic)
1661 swrule1->be.backend->tot_fe_maxconn += curproxy->maxconn;
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001662 break;
1663 }
1664 else if (!swrule2->dynamic && swrule2->be.backend == swrule1->be.backend) {
1665 /* there are multiple refs of this backend */
1666 break;
1667 }
1668 }
1669 }
1670 }
1671 }
1672
1673 /* automatically compute fullconn if not set. We must not do it in the
1674 * loop above because cross-references are not yet fully resolved.
1675 */
1676 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1677 if (curproxy->state == PR_STSTOPPED)
1678 continue;
1679
1680 /* If <fullconn> is not set, let's set it to 10% of the sum of
1681 * the possible incoming frontend's maxconns.
1682 */
1683 if (!curproxy->fullconn && (curproxy->cap & PR_CAP_BE)) {
1684 /* we have the sum of the maxconns in <total>. We only
1685 * keep 10% of that sum to set the default fullconn, with
1686 * a hard minimum of 1 (to avoid a divide by zero).
1687 */
1688 curproxy->fullconn = (curproxy->tot_fe_maxconn + 9) / 10;
1689 if (!curproxy->fullconn)
1690 curproxy->fullconn = 1;
1691 }
1692 }
1693}
1694
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001695/* Config keywords below */
1696
Willy Tarreaudc13c112013-06-21 23:16:39 +02001697static struct cfg_kw_list cfg_kws = {ILH, {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001698 { CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001699 { CFG_LISTEN, "timeout", proxy_parse_timeout },
1700 { CFG_LISTEN, "clitimeout", proxy_parse_timeout },
1701 { CFG_LISTEN, "contimeout", proxy_parse_timeout },
1702 { CFG_LISTEN, "srvtimeout", proxy_parse_timeout },
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001703 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreauc35362a2014-04-25 13:58:37 +02001704 { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +02001705 { CFG_LISTEN, "declare", proxy_parse_declare },
Olivier Houcharda254a372019-04-05 15:30:12 +02001706 { CFG_LISTEN, "retry-on", proxy_parse_retry_on },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001707 { 0, NULL, NULL },
1708}};
1709
Willy Tarreau0108d902018-11-25 19:14:37 +01001710INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
1711
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001712/* Expects to find a frontend named <arg> and returns it, otherwise displays various
1713 * adequate error messages and returns NULL. This function is designed to be used by
1714 * functions requiring a frontend on the CLI.
1715 */
1716struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
1717{
1718 struct proxy *px;
1719
1720 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001721 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001722 appctx->ctx.cli.msg = "A frontend name is expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001723 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001724 return NULL;
1725 }
1726
1727 px = proxy_fe_by_name(arg);
1728 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001729 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001730 appctx->ctx.cli.msg = "No such frontend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001731 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001732 return NULL;
1733 }
1734 return px;
1735}
1736
Olivier Houchard614f8d72017-03-14 20:08:46 +01001737/* Expects to find a backend named <arg> and returns it, otherwise displays various
1738 * adequate error messages and returns NULL. This function is designed to be used by
1739 * functions requiring a frontend on the CLI.
1740 */
1741struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
1742{
1743 struct proxy *px;
1744
1745 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001746 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001747 appctx->ctx.cli.msg = "A backend name is expected.\n";
1748 appctx->st0 = CLI_ST_PRINT;
1749 return NULL;
1750 }
1751
1752 px = proxy_be_by_name(arg);
1753 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001754 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001755 appctx->ctx.cli.msg = "No such backend.\n";
1756 appctx->st0 = CLI_ST_PRINT;
1757 return NULL;
1758 }
1759 return px;
1760}
1761
1762
William Lallemanda6c5f332016-11-19 02:25:36 +01001763/* parse a "show servers" CLI line, returns 0 if it wants to start the dump or
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001764 * 1 if it stops immediately. If an argument is specified, it will set the proxy
1765 * pointer into cli.p0 and its ID into cli.i0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001766 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001767static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemanda6c5f332016-11-19 02:25:36 +01001768{
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001769 struct proxy *px;
William Lallemanda6c5f332016-11-19 02:25:36 +01001770
1771 /* check if a backend name has been provided */
1772 if (*args[3]) {
1773 /* read server state from local file */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001774 px = proxy_be_by_name(args[3]);
William Lallemanda6c5f332016-11-19 02:25:36 +01001775
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001776 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001777 appctx->ctx.cli.severity = LOG_ERR;
William Lallemanda6c5f332016-11-19 02:25:36 +01001778 appctx->ctx.cli.msg = "Can't find backend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001779 appctx->st0 = CLI_ST_PRINT;
William Lallemanda6c5f332016-11-19 02:25:36 +01001780 return 1;
1781 }
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001782 appctx->ctx.cli.p0 = px;
1783 appctx->ctx.cli.i0 = px->uuid;
William Lallemanda6c5f332016-11-19 02:25:36 +01001784 }
1785 return 0;
1786}
1787
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001788/* dumps server state information into <buf> for all the servers found in backend cli.p0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001789 * These information are all the parameters which may change during HAProxy runtime.
1790 * By default, we only export to the last known server state file format.
1791 * These information can be used at next startup to recover same level of server state.
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001792 * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
1793 * pointer from cli.p1.
William Lallemanda6c5f332016-11-19 02:25:36 +01001794 */
Willy Tarreau83061a82018-07-13 11:56:34 +02001795static int dump_servers_state(struct stream_interface *si, struct buffer *buf)
William Lallemanda6c5f332016-11-19 02:25:36 +01001796{
1797 struct appctx *appctx = __objt_appctx(si->end);
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001798 struct proxy *px = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001799 struct server *srv;
1800 char srv_addr[INET6_ADDRSTRLEN + 1];
1801 time_t srv_time_since_last_change;
1802 int bk_f_forced_id, srv_f_forced_id;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001803 char *srvrecord;
William Lallemanda6c5f332016-11-19 02:25:36 +01001804
William Lallemanda6c5f332016-11-19 02:25:36 +01001805 /* we don't want to report any state if the backend is not enabled on this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001806 if (!(proc_mask(px->bind_proc) & pid_bit))
William Lallemanda6c5f332016-11-19 02:25:36 +01001807 return 1;
1808
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001809 if (!appctx->ctx.cli.p1)
1810 appctx->ctx.cli.p1 = px->srv;
William Lallemanda6c5f332016-11-19 02:25:36 +01001811
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001812 for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
1813 srv = appctx->ctx.cli.p1;
William Lallemanda6c5f332016-11-19 02:25:36 +01001814 srv_addr[0] = '\0';
1815
1816 switch (srv->addr.ss_family) {
1817 case AF_INET:
1818 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
1819 srv_addr, INET_ADDRSTRLEN + 1);
1820 break;
1821 case AF_INET6:
1822 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
1823 srv_addr, INET6_ADDRSTRLEN + 1);
1824 break;
Daniel Corbett9215ffa2018-05-19 19:43:24 -04001825 default:
1826 memcpy(srv_addr, "-\0", 2);
1827 break;
William Lallemanda6c5f332016-11-19 02:25:36 +01001828 }
1829 srv_time_since_last_change = now.tv_sec - srv->last_change;
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001830 bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001831 srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
1832
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001833 srvrecord = NULL;
1834 if (srv->srvrq && srv->srvrq->name)
1835 srvrecord = srv->srvrq->name;
1836
William Lallemanda6c5f332016-11-19 02:25:36 +01001837 chunk_appendf(buf,
1838 "%d %s "
1839 "%d %s %s "
1840 "%d %d %d %d %ld "
1841 "%d %d %d %d %d "
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001842 "%d %d %s %u %s"
William Lallemanda6c5f332016-11-19 02:25:36 +01001843 "\n",
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001844 px->uuid, px->id,
William Lallemanda6c5f332016-11-19 02:25:36 +01001845 srv->puid, srv->id, srv_addr,
Emeric Brun52a91d32017-08-31 14:41:55 +02001846 srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
William Lallemanda6c5f332016-11-19 02:25:36 +01001847 srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001848 bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
1849 srvrecord ? srvrecord : "-");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001850 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001851 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001852 return 0;
1853 }
1854 }
1855 return 1;
1856}
1857
1858/* Parses backend list or simply use backend name provided by the user to return
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001859 * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
1860 * non-null.
William Lallemanda6c5f332016-11-19 02:25:36 +01001861 */
1862static int cli_io_handler_servers_state(struct appctx *appctx)
1863{
1864 struct stream_interface *si = appctx->owner;
William Lallemanda6c5f332016-11-19 02:25:36 +01001865 struct proxy *curproxy;
1866
1867 chunk_reset(&trash);
1868
1869 if (appctx->st2 == STAT_ST_INIT) {
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001870 if (!appctx->ctx.cli.p0)
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001871 appctx->ctx.cli.p0 = proxies_list;
William Lallemanda6c5f332016-11-19 02:25:36 +01001872 appctx->st2 = STAT_ST_HEAD;
1873 }
1874
1875 if (appctx->st2 == STAT_ST_HEAD) {
1876 chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001877 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001878 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001879 return 0;
1880 }
1881 appctx->st2 = STAT_ST_INFO;
1882 }
1883
1884 /* STAT_ST_INFO */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001885 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1886 curproxy = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001887 /* servers are only in backends */
1888 if (curproxy->cap & PR_CAP_BE) {
1889 if (!dump_servers_state(si, &trash))
1890 return 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001891 }
1892 /* only the selected proxy is dumped */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001893 if (appctx->ctx.cli.i0)
William Lallemanda6c5f332016-11-19 02:25:36 +01001894 break;
1895 }
1896
1897 return 1;
1898}
1899
Willy Tarreau608ea592016-12-16 18:01:15 +01001900/* Parses backend list and simply report backend names. It keeps the proxy
1901 * pointer in cli.p0.
1902 */
William Lallemand933efcd2016-11-22 12:34:16 +01001903static int cli_io_handler_show_backend(struct appctx *appctx)
1904{
William Lallemand933efcd2016-11-22 12:34:16 +01001905 struct stream_interface *si = appctx->owner;
1906 struct proxy *curproxy;
1907
1908 chunk_reset(&trash);
1909
Willy Tarreau608ea592016-12-16 18:01:15 +01001910 if (!appctx->ctx.cli.p0) {
William Lallemand933efcd2016-11-22 12:34:16 +01001911 chunk_printf(&trash, "# name\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001912 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001913 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001914 return 0;
1915 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001916 appctx->ctx.cli.p0 = proxies_list;
William Lallemand933efcd2016-11-22 12:34:16 +01001917 }
1918
Willy Tarreau608ea592016-12-16 18:01:15 +01001919 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1920 curproxy = appctx->ctx.cli.p0;
William Lallemand933efcd2016-11-22 12:34:16 +01001921
1922 /* looking for backends only */
1923 if (!(curproxy->cap & PR_CAP_BE))
1924 continue;
1925
1926 /* we don't want to list a backend which is bound to this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001927 if (!(proc_mask(curproxy->bind_proc) & pid_bit))
William Lallemand933efcd2016-11-22 12:34:16 +01001928 continue;
1929
1930 chunk_appendf(&trash, "%s\n", curproxy->id);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001931 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001932 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001933 return 0;
1934 }
1935 }
1936
1937 return 1;
1938}
William Lallemanda6c5f332016-11-19 02:25:36 +01001939
Willy Tarreaua275a372018-08-21 14:50:44 +02001940/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
1941 *
1942 * Grabs the proxy lock and each server's lock.
1943 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001944static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001945{
1946 struct proxy *px;
1947 struct server *s;
1948
1949 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1950 return 1;
1951
1952 px = cli_find_backend(appctx, args[3]);
1953 if (!px)
1954 return 1;
1955
Willy Tarreau0ff395c2019-07-30 11:59:34 +02001956 /* Note: this lock is to make sure this doesn't change while another
1957 * thread is in srv_set_dyncookie().
1958 */
Willy Tarreaua275a372018-08-21 14:50:44 +02001959 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001960 px->ck_opts |= PR_CK_DYNAMIC;
Willy Tarreau0ff395c2019-07-30 11:59:34 +02001961 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001962
Willy Tarreaua275a372018-08-21 14:50:44 +02001963 for (s = px->srv; s != NULL; s = s->next) {
1964 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001965 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001966 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1967 }
1968
Olivier Houchard614f8d72017-03-14 20:08:46 +01001969 return 1;
1970}
1971
Willy Tarreaua275a372018-08-21 14:50:44 +02001972/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
1973 *
1974 * Grabs the proxy lock and each server's lock.
1975 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001976static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001977{
1978 struct proxy *px;
1979 struct server *s;
1980
1981 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1982 return 1;
1983
1984 px = cli_find_backend(appctx, args[3]);
1985 if (!px)
1986 return 1;
1987
Willy Tarreau0ff395c2019-07-30 11:59:34 +02001988 /* Note: this lock is to make sure this doesn't change while another
1989 * thread is in srv_set_dyncookie().
1990 */
Willy Tarreaua275a372018-08-21 14:50:44 +02001991 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001992 px->ck_opts &= ~PR_CK_DYNAMIC;
Willy Tarreau0ff395c2019-07-30 11:59:34 +02001993 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001994
1995 for (s = px->srv; s != NULL; s = s->next) {
Willy Tarreaua275a372018-08-21 14:50:44 +02001996 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001997 if (!(s->flags & SRV_F_COOKIESET)) {
1998 free(s->cookie);
1999 s->cookie = NULL;
2000 }
Willy Tarreaua275a372018-08-21 14:50:44 +02002001 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002002 }
2003
2004 return 1;
2005}
2006
Willy Tarreaua275a372018-08-21 14:50:44 +02002007/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
2008 *
2009 * Grabs the proxy lock and each server's lock.
2010 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002011static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01002012{
2013 struct proxy *px;
2014 struct server *s;
2015 char *newkey;
2016
2017 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2018 return 1;
2019
2020 px = cli_find_backend(appctx, args[3]);
2021 if (!px)
2022 return 1;
2023
2024 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002025 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01002026 appctx->ctx.cli.msg = "String value expected.\n";
2027 appctx->st0 = CLI_ST_PRINT;
2028 return 1;
2029 }
2030
2031 newkey = strdup(args[4]);
2032 if (!newkey) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002033 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01002034 appctx->ctx.cli.msg = "Failed to allocate memory.\n";
2035 appctx->st0 = CLI_ST_PRINT;
2036 return 1;
2037 }
Willy Tarreaua275a372018-08-21 14:50:44 +02002038
Willy Tarreau0ff395c2019-07-30 11:59:34 +02002039 /* Note: this lock is to make sure this doesn't change while another
2040 * thread is in srv_set_dyncookie().
2041 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002042 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002043 free(px->dyncookie_key);
2044 px->dyncookie_key = newkey;
Willy Tarreau0ff395c2019-07-30 11:59:34 +02002045 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002046
Willy Tarreaua275a372018-08-21 14:50:44 +02002047 for (s = px->srv; s != NULL; s = s->next) {
2048 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002049 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02002050 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
2051 }
2052
Olivier Houchard614f8d72017-03-14 20:08:46 +01002053 return 1;
2054}
2055
Willy Tarreaua275a372018-08-21 14:50:44 +02002056/* Parses the "set maxconn frontend" directive, it always returns 1.
2057 *
2058 * Grabs the proxy lock.
2059 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002060static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002061{
2062 struct proxy *px;
2063 struct listener *l;
2064 int v;
2065
2066 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2067 return 1;
2068
2069 px = cli_find_frontend(appctx, args[3]);
2070 if (!px)
2071 return 1;
2072
2073 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002074 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002075 appctx->ctx.cli.msg = "Integer value expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002076 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002077 return 1;
2078 }
2079
2080 v = atoi(args[4]);
2081 if (v < 0) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002082 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002083 appctx->ctx.cli.msg = "Value out of range.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002084 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002085 return 1;
2086 }
2087
2088 /* OK, the value is fine, so we assign it to the proxy and to all of
2089 * its listeners. The blocked ones will be dequeued.
2090 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002091 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2092
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002093 px->maxconn = v;
2094 list_for_each_entry(l, &px->conf.listeners, by_fe) {
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002095 if (l->state == LI_FULL)
2096 resume_listener(l);
2097 }
2098
2099 if (px->maxconn > px->feconn && !LIST_ISEMPTY(&px->listener_queue))
2100 dequeue_all_listeners(&px->listener_queue);
2101
Willy Tarreaua275a372018-08-21 14:50:44 +02002102 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2103
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002104 return 1;
2105}
2106
Willy Tarreaua275a372018-08-21 14:50:44 +02002107/* Parses the "shutdown frontend" directive, it always returns 1.
2108 *
2109 * Grabs the proxy lock.
2110 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002111static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002112{
2113 struct proxy *px;
2114
2115 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2116 return 1;
2117
2118 px = cli_find_frontend(appctx, args[2]);
2119 if (!px)
2120 return 1;
2121
2122 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002123 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002124 appctx->ctx.cli.msg = "Frontend was already shut down.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002125 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002126 return 1;
2127 }
2128
Christopher Faulet767a84b2017-11-24 16:50:31 +01002129 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2130 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002131 send_log(px, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2132 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreaua275a372018-08-21 14:50:44 +02002133
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002134 stop_proxy(px);
2135 return 1;
2136}
2137
Willy Tarreaua275a372018-08-21 14:50:44 +02002138/* Parses the "disable frontend" directive, it always returns 1.
2139 *
2140 * Grabs the proxy lock.
2141 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002142static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002143{
2144 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002145 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002146
2147 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2148 return 1;
2149
2150 px = cli_find_frontend(appctx, args[2]);
2151 if (!px)
2152 return 1;
2153
2154 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002155 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002156 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot disable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002157 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002158 return 1;
2159 }
2160
2161 if (px->state == PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002162 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002163 appctx->ctx.cli.msg = "Frontend is already disabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002164 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002165 return 1;
2166 }
2167
Willy Tarreaua275a372018-08-21 14:50:44 +02002168 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2169 ret = pause_proxy(px);
2170 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2171
2172 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002173 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002174 appctx->ctx.cli.msg = "Failed to pause frontend, check logs for precise cause.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002175 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002176 return 1;
2177 }
2178 return 1;
2179}
2180
Willy Tarreaua275a372018-08-21 14:50:44 +02002181/* Parses the "enable frontend" directive, it always returns 1.
2182 *
2183 * Grabs the proxy lock.
2184 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002185static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002186{
2187 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002188 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002189
2190 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2191 return 1;
2192
2193 px = cli_find_frontend(appctx, args[2]);
2194 if (!px)
2195 return 1;
2196
2197 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002198 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002199 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot enable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002200 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002201 return 1;
2202 }
2203
2204 if (px->state != PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002205 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002206 appctx->ctx.cli.msg = "Frontend is already enabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002207 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002208 return 1;
2209 }
2210
Willy Tarreaua275a372018-08-21 14:50:44 +02002211 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2212 ret = resume_proxy(px);
2213 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2214
2215 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002216 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002217 appctx->ctx.cli.msg = "Failed to resume frontend, check logs for precise cause (port conflict?).\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002218 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002219 return 1;
2220 }
2221 return 1;
2222}
2223
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002224/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
2225 * now.
2226 */
2227static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
2228{
2229 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2230 return 1;
2231
2232 if (*args[2]) {
2233 struct proxy *px;
2234
2235 px = proxy_find_by_name(args[2], 0, 0);
2236 if (px)
2237 appctx->ctx.errors.iid = px->uuid;
2238 else
2239 appctx->ctx.errors.iid = atoi(args[2]);
2240
2241 if (!appctx->ctx.errors.iid) {
2242 appctx->ctx.cli.severity = LOG_ERR;
2243 appctx->ctx.cli.msg = "No such proxy.\n";
2244 appctx->st0 = CLI_ST_PRINT;
2245 return 1;
2246 }
2247 }
2248 else
2249 appctx->ctx.errors.iid = -1; // dump all proxies
2250
2251 appctx->ctx.errors.flag = 0;
2252 if (strcmp(args[3], "request") == 0)
2253 appctx->ctx.errors.flag |= 4; // ignore response
2254 else if (strcmp(args[3], "response") == 0)
2255 appctx->ctx.errors.flag |= 2; // ignore request
2256 appctx->ctx.errors.px = NULL;
2257 return 0;
2258}
2259
2260/* This function dumps all captured errors onto the stream interface's
2261 * read buffer. It returns 0 if the output buffer is full and it needs
2262 * to be called again, otherwise non-zero.
2263 */
2264static int cli_io_handler_show_errors(struct appctx *appctx)
2265{
2266 struct stream_interface *si = appctx->owner;
2267 extern const char *monthname[12];
2268
2269 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
2270 return 1;
2271
2272 chunk_reset(&trash);
2273
2274 if (!appctx->ctx.errors.px) {
2275 /* the function had not been called yet, let's prepare the
2276 * buffer for a response.
2277 */
2278 struct tm tm;
2279
2280 get_localtime(date.tv_sec, &tm);
2281 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
2282 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2283 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
2284 error_snapshot_id);
2285
Willy Tarreau36b27362018-09-07 19:55:44 +02002286 if (ci_putchk(si_ic(si), &trash) == -1)
2287 goto cant_send;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002288
2289 appctx->ctx.errors.px = proxies_list;
2290 appctx->ctx.errors.bol = 0;
2291 appctx->ctx.errors.ptr = -1;
2292 }
2293
2294 /* we have two inner loops here, one for the proxy, the other one for
2295 * the buffer.
2296 */
2297 while (appctx->ctx.errors.px) {
2298 struct error_snapshot *es;
2299
Willy Tarreau36b27362018-09-07 19:55:44 +02002300 HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2301
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002302 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002303 es = appctx->ctx.errors.px->invalid_req;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002304 if (appctx->ctx.errors.flag & 2) // skip req
2305 goto next;
2306 }
2307 else {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002308 es = appctx->ctx.errors.px->invalid_rep;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002309 if (appctx->ctx.errors.flag & 4) // skip resp
2310 goto next;
2311 }
2312
Willy Tarreauc55015e2018-09-07 19:02:32 +02002313 if (!es)
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002314 goto next;
2315
2316 if (appctx->ctx.errors.iid >= 0 &&
2317 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
2318 es->oe->uuid != appctx->ctx.errors.iid)
2319 goto next;
2320
2321 if (appctx->ctx.errors.ptr < 0) {
2322 /* just print headers now */
2323
2324 char pn[INET6_ADDRSTRLEN];
2325 struct tm tm;
2326 int port;
2327
2328 get_localtime(es->when.tv_sec, &tm);
2329 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
2330 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2331 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
2332
2333 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
2334 case AF_INET:
2335 case AF_INET6:
2336 port = get_host_port(&es->src);
2337 break;
2338 default:
2339 port = 0;
2340 }
2341
2342 switch (appctx->ctx.errors.flag & 1) {
2343 case 0:
2344 chunk_appendf(&trash,
2345 " frontend %s (#%d): invalid request\n"
2346 " backend %s (#%d)",
2347 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2348 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
2349 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
2350 break;
2351 case 1:
2352 chunk_appendf(&trash,
2353 " backend %s (#%d): invalid response\n"
2354 " frontend %s (#%d)",
2355 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2356 es->oe->id, es->oe->uuid);
2357 break;
2358 }
2359
2360 chunk_appendf(&trash,
2361 ", server %s (#%d), event #%u, src %s:%d\n"
2362 " buffer starts at %llu (including %u out), %u free,\n"
2363 " len %u, wraps at %u, error at position %u\n",
2364 es->srv ? es->srv->id : "<NONE>",
2365 es->srv ? es->srv->puid : -1,
2366 es->ev_id, pn, port,
2367 es->buf_ofs, es->buf_out,
2368 global.tune.bufsize - es->buf_out - es->buf_len,
2369 es->buf_len, es->buf_wrap, es->buf_err);
2370
2371 if (es->show)
2372 es->show(&trash, es);
2373
2374 chunk_appendf(&trash, " \n");
2375
Willy Tarreau36b27362018-09-07 19:55:44 +02002376 if (ci_putchk(si_ic(si), &trash) == -1)
2377 goto cant_send_unlock;
2378
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002379 appctx->ctx.errors.ptr = 0;
2380 appctx->ctx.errors.ev_id = es->ev_id;
2381 }
2382
2383 if (appctx->ctx.errors.ev_id != es->ev_id) {
2384 /* the snapshot changed while we were dumping it */
2385 chunk_appendf(&trash,
2386 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau36b27362018-09-07 19:55:44 +02002387 if (ci_putchk(si_ic(si), &trash) == -1)
2388 goto cant_send_unlock;
2389
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002390 goto next;
2391 }
2392
2393 /* OK, ptr >= 0, so we have to dump the current line */
Willy Tarreau4bc7d902018-09-07 20:07:17 +02002394 while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002395 int newptr;
2396 int newline;
2397
2398 newline = appctx->ctx.errors.bol;
2399 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
2400 if (newptr == appctx->ctx.errors.ptr)
Willy Tarreau36b27362018-09-07 19:55:44 +02002401 goto cant_send_unlock;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002402
Willy Tarreau36b27362018-09-07 19:55:44 +02002403 if (ci_putchk(si_ic(si), &trash) == -1)
2404 goto cant_send_unlock;
2405
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002406 appctx->ctx.errors.ptr = newptr;
2407 appctx->ctx.errors.bol = newline;
2408 };
2409 next:
Willy Tarreau36b27362018-09-07 19:55:44 +02002410 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002411 appctx->ctx.errors.bol = 0;
2412 appctx->ctx.errors.ptr = -1;
2413 appctx->ctx.errors.flag ^= 1;
2414 if (!(appctx->ctx.errors.flag & 1))
2415 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
2416 }
2417
2418 /* dump complete */
2419 return 1;
Willy Tarreau36b27362018-09-07 19:55:44 +02002420
2421 cant_send_unlock:
2422 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2423 cant_send:
Willy Tarreaudb398432018-11-15 11:08:52 +01002424 si_rx_room_blk(si);
Willy Tarreau36b27362018-09-07 19:55:44 +02002425 return 0;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002426}
2427
William Lallemanda6c5f332016-11-19 02:25:36 +01002428/* register cli keywords */
2429static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau15b9e682016-11-24 11:55:28 +01002430 { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
2431 { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002432 { { "set", "maxconn", "frontend", NULL }, "set maxconn frontend : change a frontend's maxconn setting", cli_parse_set_maxconn_frontend, NULL },
William Lallemanda6c5f332016-11-19 02:25:36 +01002433 { { "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 Tarreau608ea592016-12-16 18:01:15 +01002434 { { "show", "backend", NULL }, "show backend : list backends in the current running config", NULL, cli_io_handler_show_backend },
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002435 { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
Olivier Houchard614f8d72017-03-14 20:08:46 +01002436 { { "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 },
2437 { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
2438 { { "disable", "dynamic-cookie", "backend", NULL }, "disable dynamic-cookie backend : disable dynamic cookies on a specific backend", cli_parse_disable_dyncookie_backend, NULL },
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002439 { { "show", "errors", NULL }, "show errors : report last request and response errors for each proxy", cli_parse_show_errors, cli_io_handler_show_errors, NULL },
William Lallemanda6c5f332016-11-19 02:25:36 +01002440 {{},}
2441}};
2442
Willy Tarreau0108d902018-11-25 19:14:37 +01002443INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002444
2445/*
2446 * Local variables:
2447 * c-indent-level: 8
2448 * c-basic-offset: 8
2449 * End:
2450 */