blob: 329626821da30b62b9480c1086b8e951cf9df1f2 [file] [log] [blame]
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 },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100109 { "independent-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
110 { "http-use-proxy-header", PR_O2_USE_PXHDR, PR_CAP_FE, 0, PR_MODE_HTTP },
111 { "http-pretend-keepalive", PR_O2_FAKE_KA, PR_CAP_BE, 0, PR_MODE_HTTP },
112 { "http-no-delay", PR_O2_NODELAY, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Fauleteb709802019-04-11 22:04:08 +0200113 { "http-use-htx", PR_O2_USE_HTX, PR_CAP_FE|PR_CAP_BE, 0, 0 },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100114 { NULL, 0, 0, 0 }
115};
116
Willy Tarreau977b8e42006-12-29 14:19:17 +0100117/*
Willy Tarreau816eb542007-11-04 07:04:43 +0100118 * This function returns a string containing a name describing capabilities to
119 * report comprehensible error messages. Specifically, it will return the words
Christopher Faulet898566e2016-10-26 11:06:28 +0200120 * "frontend", "backend" when appropriate, or "proxy" for all other
Willy Tarreau816eb542007-11-04 07:04:43 +0100121 * cases including the proxies declared in "listen" mode.
Willy Tarreau977b8e42006-12-29 14:19:17 +0100122 */
Willy Tarreau816eb542007-11-04 07:04:43 +0100123const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +0100124{
Willy Tarreau816eb542007-11-04 07:04:43 +0100125 if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
126 if (cap & PR_CAP_FE)
127 return "frontend";
128 else if (cap & PR_CAP_BE)
129 return "backend";
Willy Tarreau816eb542007-11-04 07:04:43 +0100130 }
131 return "proxy";
Willy Tarreau977b8e42006-12-29 14:19:17 +0100132}
133
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100134/*
135 * This function returns a string containing the mode of the proxy in a format
136 * suitable for error messages.
137 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100138const char *proxy_mode_str(int mode) {
139
140 if (mode == PR_MODE_TCP)
141 return "tcp";
142 else if (mode == PR_MODE_HTTP)
143 return "http";
144 else if (mode == PR_MODE_HEALTH)
145 return "health";
William Lallemandcf62f7e2018-10-26 14:47:40 +0200146 else if (mode == PR_MODE_CLI)
147 return "cli";
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100148 else
149 return "unknown";
150}
151
Willy Tarreauf3950172009-10-10 18:35:51 +0200152/*
153 * This function scans the list of backends and servers to retrieve the first
154 * backend and the first server with the given names, and sets them in both
155 * parameters. It returns zero if either is not found, or non-zero and sets
156 * the ones it did not found to NULL. If a NULL pointer is passed for the
157 * backend, only the pointer to the server will be updated.
158 */
159int get_backend_server(const char *bk_name, const char *sv_name,
160 struct proxy **bk, struct server **sv)
161{
162 struct proxy *p;
163 struct server *s;
Willy Tarreau7ecc4202014-03-15 07:57:11 +0100164 int sid;
Willy Tarreauf3950172009-10-10 18:35:51 +0200165
166 *sv = NULL;
167
Willy Tarreau050536d2012-10-04 08:47:34 +0200168 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200169 if (*sv_name == '#')
170 sid = atoi(sv_name + 1);
171
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200172 p = proxy_be_by_name(bk_name);
Willy Tarreauf3950172009-10-10 18:35:51 +0200173 if (bk)
174 *bk = p;
175 if (!p)
176 return 0;
177
178 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100179 if ((sid >= 0 && s->puid == sid) ||
180 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200181 break;
182 *sv = s;
183 if (!s)
184 return 0;
185 return 1;
186}
187
Willy Tarreaue219db72007-12-03 01:30:13 +0100188/* This function parses a "timeout" statement in a proxy section. It returns
189 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200190 * return zero, it will write an error or warning message into a preallocated
191 * buffer returned at <err>. The trailing is not be written. The function must
192 * be called with <args> pointing to the first command line word, with <proxy>
193 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
194 * As a special case for compatibility with older configs, it also accepts
195 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100196 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200197static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200198 struct proxy *defpx, const char *file, int line,
199 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100200{
201 unsigned timeout;
202 int retval, cap;
203 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200204 int *tv = NULL;
205 int *td = NULL;
Willy Tarreaue219db72007-12-03 01:30:13 +0100206
207 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200208
209 /* simply skip "timeout" but remain compatible with old form */
210 if (strcmp(args[0], "timeout") == 0)
211 args++;
212
Willy Tarreaue219db72007-12-03 01:30:13 +0100213 name = args[0];
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200214 if (!strcmp(args[0], "client")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100215 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100216 tv = &proxy->timeout.client;
217 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100218 cap = PR_CAP_FE;
219 } else if (!strcmp(args[0], "tarpit")) {
220 tv = &proxy->timeout.tarpit;
221 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100222 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100223 } else if (!strcmp(args[0], "http-keep-alive")) {
224 tv = &proxy->timeout.httpka;
225 td = &defpx->timeout.httpka;
226 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100227 } else if (!strcmp(args[0], "http-request")) {
228 tv = &proxy->timeout.httpreq;
229 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200230 cap = PR_CAP_FE | PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200231 } else if (!strcmp(args[0], "server")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100232 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100233 tv = &proxy->timeout.server;
234 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100235 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200236 } else if (!strcmp(args[0], "connect")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100237 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100238 tv = &proxy->timeout.connect;
239 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100240 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100241 } else if (!strcmp(args[0], "check")) {
242 tv = &proxy->timeout.check;
243 td = &defpx->timeout.check;
244 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100245 } else if (!strcmp(args[0], "queue")) {
246 tv = &proxy->timeout.queue;
247 td = &defpx->timeout.queue;
248 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200249 } else if (!strcmp(args[0], "tunnel")) {
250 tv = &proxy->timeout.tunnel;
251 td = &defpx->timeout.tunnel;
252 cap = PR_CAP_BE;
Willy Tarreau05cdd962014-05-10 14:30:07 +0200253 } else if (!strcmp(args[0], "client-fin")) {
254 tv = &proxy->timeout.clientfin;
255 td = &defpx->timeout.clientfin;
256 cap = PR_CAP_FE;
257 } else if (!strcmp(args[0], "server-fin")) {
258 tv = &proxy->timeout.serverfin;
259 td = &defpx->timeout.serverfin;
260 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200261 } else if (!strcmp(args[0], "clitimeout")) {
262 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout client'.", args[0]);
263 return -1;
264 } else if (!strcmp(args[0], "srvtimeout")) {
265 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout server'.", args[0]);
266 return -1;
267 } else if (!strcmp(args[0], "contimeout")) {
268 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout connect'.", args[0]);
269 return -1;
Willy Tarreaue219db72007-12-03 01:30:13 +0100270 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200271 memprintf(err,
272 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreau05cdd962014-05-10 14:30:07 +0200273 "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', "
274 "'client-fin' and 'server-fin' (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200275 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100276 return -1;
277 }
278
279 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200280 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100281 return -1;
282 }
283
284 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +0200285 if (res == PARSE_TIME_OVER) {
286 memprintf(err, "timer overflow in argument '%s' to 'timeout %s' (maximum value is 2147483647 ms or ~24.8 days)",
287 args[1], name);
288 return -1;
289 }
290 else if (res == PARSE_TIME_UNDER) {
291 memprintf(err, "timer underflow in argument '%s' to 'timeout %s' (minimum non-null value is 1 ms)",
292 args[1], name);
293 return -1;
294 }
295 else if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200296 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100297 return -1;
298 }
299
300 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200301 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
302 name, proxy_type_str(proxy), proxy->id,
303 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100304 retval = 1;
305 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200306 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200307 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100308 retval = 1;
309 }
310
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 Tarreauda250db2008-10-12 12:07:48 +02001261 * PR_STSTOPPED state.
1262 */
1263void stop_proxy(struct proxy *p)
1264{
1265 struct listener *l;
William Lallemandc59f9882018-11-16 16:57:21 +01001266 int nostop = 0;
Willy Tarreauda250db2008-10-12 12:07:48 +02001267
Willy Tarreau4348fad2012-09-20 16:48:07 +02001268 list_for_each_entry(l, &p->conf.listeners, by_fe) {
William Lallemandc59f9882018-11-16 16:57:21 +01001269 if (l->options & LI_O_NOSTOP) {
1270 HA_ATOMIC_ADD(&unstoppable_jobs, 1);
1271 nostop = 1;
1272 continue;
1273 }
Willy Tarreauda250db2008-10-12 12:07:48 +02001274 unbind_listener(l);
1275 if (l->state >= LI_ASSIGNED) {
1276 delete_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001277 }
1278 }
William Lallemandc59f9882018-11-16 16:57:21 +01001279 if (!nostop)
1280 p->state = PR_STSTOPPED;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001281}
1282
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001283/* This function resumes listening on the specified proxy. It scans all of its
1284 * listeners and tries to enable them all. If any of them fails, the proxy is
1285 * put back to the paused state. It returns 1 upon success, or zero if an error
1286 * is encountered.
1287 */
1288int resume_proxy(struct proxy *p)
1289{
1290 struct listener *l;
1291 int fail;
1292
1293 if (p->state != PR_STPAUSED)
1294 return 1;
1295
Christopher Faulet767a84b2017-11-24 16:50:31 +01001296 ha_warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001297 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
1298
1299 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +02001300 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001301 if (!resume_listener(l)) {
1302 int port;
1303
1304 port = get_host_port(&l->addr);
1305 if (port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001306 ha_warning("Port %d busy while trying to enable %s %s.\n",
1307 port, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001308 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
1309 port, proxy_cap_str(p->cap), p->id);
1310 }
1311 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001312 ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
1313 l->luid, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001314 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
1315 l->luid, proxy_cap_str(p->cap), p->id);
1316 }
1317
1318 /* Another port might have been enabled. Let's stop everything. */
1319 fail = 1;
1320 break;
1321 }
1322 }
1323
1324 p->state = PR_STREADY;
1325 if (fail) {
1326 pause_proxy(p);
1327 return 0;
1328 }
1329 return 1;
1330}
1331
Willy Tarreaubaaee002006-06-26 02:48:02 +02001332/*
1333 * This function temporarily disables listening so that another new instance
1334 * can start listening. It is designed to be called upon reception of a
1335 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
1336 * the proxy, or a SIGTTIN can be sent to listen again.
1337 */
1338void pause_proxies(void)
1339{
1340 int err;
1341 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001342 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001343
1344 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001345 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001346 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001347 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +02001348 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001349 p = p->next;
1350 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001351
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001352 prs = cfg_peers;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001353 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001354 if (prs->peers_fe)
1355 err |= !pause_proxy(prs->peers_fe);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001356 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001357 }
1358
Willy Tarreaubaaee002006-06-26 02:48:02 +02001359 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001360 ha_warning("Some proxies refused to pause, performing soft stop now.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02001361 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
1362 soft_stop();
1363 }
1364}
1365
1366
1367/*
1368 * This function reactivates listening. This can be used after a call to
1369 * sig_pause(), for example when a new instance has failed starting up.
1370 * It is designed to be called upon reception of a SIGTTIN.
1371 */
Willy Tarreaube58c382011-07-24 18:28:10 +02001372void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001373{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001374 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001375 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001376 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001377
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001378 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001379 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001380 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001381 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001382 err |= !resume_proxy(p);
1383 p = p->next;
1384 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001385
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001386 prs = cfg_peers;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001387 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001388 if (prs->peers_fe)
1389 err |= !resume_proxy(prs->peers_fe);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001390 prs = prs->next;
1391 }
Willy Tarreaube58c382011-07-24 18:28:10 +02001392
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001393 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001394 ha_warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001395 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 +02001396 }
1397}
1398
Willy Tarreau87b09662015-04-03 00:22:06 +02001399/* Set current stream's backend to <be>. Nothing is done if the
1400 * stream already had a backend assigned, which is indicated by
Willy Tarreaue7dff022015-04-03 01:14:29 +02001401 * s->flags & SF_BE_ASSIGNED.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001402 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001403 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001404 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001405int stream_set_backend(struct stream *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001406{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001407 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001408 return 1;
Christopher Faulet41179042016-06-21 11:54:52 +02001409
1410 if (flt_set_stream_backend(s, be) < 0)
1411 return 0;
1412
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001413 s->be = be;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001414 HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
1415 HA_ATOMIC_ADD(&be->beconn, 1));
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001416 proxy_inc_be_ctr(be);
1417
Willy Tarreau3e451842019-02-01 15:06:09 +01001418 /* HTX/legacy must match */
Christopher Fauletbbe68542019-04-08 10:53:51 +02001419 if ((strm_fe(s)->options2 ^ be->options2) & PR_O2_USE_HTX)
Willy Tarreau3e451842019-02-01 15:06:09 +01001420 return 0;
1421
Willy Tarreau87b09662015-04-03 00:22:06 +02001422 /* assign new parameters to the stream from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +02001423 s->si[1].flags &= ~SI_FL_INDEP_STR;
1424 if (be->options2 & PR_O2_INDEPSTR)
1425 s->si[1].flags |= SI_FL_INDEP_STR;
1426
Hongbo Longe39683c2017-03-10 18:41:51 +01001427 if (tick_isset(be->timeout.serverfin))
1428 s->si[1].hcto = be->timeout.serverfin;
1429
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001430 /* We want to enable the backend-specific analysers except those which
1431 * were already run as part of the frontend/listener. Note that it would
1432 * be more reliable to store the list of analysers that have been run,
1433 * but what we do here is OK for now.
1434 */
Christopher Faulet70e2f272017-01-09 16:33:19 +01001435 s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001436
Willy Tarreau51aecc72009-07-12 09:47:04 +02001437 /* If the target backend requires HTTP processing, we have to allocate
Willy Tarreaueee5b512015-04-03 23:46:31 +02001438 * the HTTP transaction and hdr_idx if we did not have one.
Willy Tarreau51aecc72009-07-12 09:47:04 +02001439 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001440 if (unlikely(!s->txn && be->http_needed)) {
1441 if (unlikely(!http_alloc_txn(s)))
Willy Tarreau51aecc72009-07-12 09:47:04 +02001442 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +02001443
1444 /* and now initialize the HTTP transaction state */
1445 http_init_txn(s);
Willy Tarreau51aecc72009-07-12 09:47:04 +02001446 }
1447
Christopher Faulet309c6412015-12-02 09:57:32 +01001448 /* Be sure to filter request headers if the backend is an HTTP proxy and
1449 * if there are filters attached to the stream. */
1450 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +01001451 s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +01001452
Willy Tarreaueee5b512015-04-03 23:46:31 +02001453 if (s->txn) {
1454 if (be->options2 & PR_O2_RSPBUG_OK)
1455 s->txn->rsp.err_pos = -1; /* let buggy responses pass */
Willy Tarreau4e21ff92014-09-30 18:44:22 +02001456
Willy Tarreaueee5b512015-04-03 23:46:31 +02001457 /* If we chain to an HTTP backend running a different HTTP mode, we
1458 * have to re-adjust the desired keep-alive/close mode to accommodate
1459 * both the frontend's and the backend's modes.
1460 */
Willy Tarreaud0d8da92015-04-04 02:10:38 +02001461 if (strm_fe(s)->mode == PR_MODE_HTTP && be->mode == PR_MODE_HTTP &&
1462 ((strm_fe(s)->options & PR_O_HTTP_MODE) != (be->options & PR_O_HTTP_MODE)))
Willy Tarreaueee5b512015-04-03 23:46:31 +02001463 http_adjust_conn_mode(s, s->txn, &s->txn->req);
Willy Tarreau80a92c02014-03-12 10:41:13 +01001464
Christopher Fauletbbe68542019-04-08 10:53:51 +02001465 /* If we chain a TCP frontend to an HTX backend, we must upgrade
1466 * the client mux */
1467 if (!IS_HTX_STRM(s) && be->mode == PR_MODE_HTTP && (be->options2 & PR_O2_USE_HTX)) {
1468 struct connection *conn = objt_conn(strm_sess(s)->origin);
1469 struct conn_stream *cs = objt_cs(s->si[0].end);
1470
1471 if (conn && cs) {
1472 si_rx_endp_more(&s->si[0]);
Olivier Houchard2ab3dad2019-07-03 13:08:18 +02001473 /* Make sure we're unsubscribed, the the new
1474 * mux will probably want to subscribe to
1475 * the underlying XPRT
1476 */
1477 if (s->si[0].wait_event.events)
1478 conn->mux->unsubscribe(cs, s->si[0].wait_event.events,
1479 &s->si[0].wait_event);
Christopher Fauletbbe68542019-04-08 10:53:51 +02001480 if (conn_upgrade_mux_fe(conn, cs, &s->req.buf, ist(""), PROTO_MODE_HTX) == -1)
1481 return 0;
1482 s->flags |= SF_HTX;
1483 }
1484 }
1485
Willy Tarreaueee5b512015-04-03 23:46:31 +02001486 /* If an LB algorithm needs to access some pre-parsed body contents,
1487 * we must not start to forward anything until the connection is
1488 * confirmed otherwise we'll lose the pointer to these data and
1489 * prevent the hash from being doable again after a redispatch.
1490 */
1491 if (be->mode == PR_MODE_HTTP &&
1492 (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM))
1493 s->txn->req.flags |= HTTP_MSGF_WAIT_CONN;
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001494
1495 /* we may request to parse a request body */
1496 if ((be->options & PR_O_WREQ_BODY) &&
1497 (s->txn->req.body_len || (s->txn->req.flags & HTTP_MSGF_TE_CHNK)))
1498 s->req.analysers |= AN_REQ_HTTP_BODY;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001499 }
1500
1501 s->flags |= SF_BE_ASSIGNED;
Willy Tarreau96e31212011-05-30 18:10:30 +02001502 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001503 s->req.flags |= CF_NEVER_WAIT;
1504 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02001505 }
1506
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001507 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001508}
1509
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001510/* Capture a bad request or response and archive it in the proxy's structure.
1511 * It is relatively protocol-agnostic so it requires that a number of elements
1512 * are passed :
1513 * - <proxy> is the proxy where the error was detected and where the snapshot
1514 * needs to be stored
Joseph Herlant59dd2952018-11-15 11:46:55 -08001515 * - <is_back> indicates that the error happened when receiving the response
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001516 * - <other_end> is a pointer to the proxy on the other side when known
1517 * - <target> is the target of the connection, usually a server or a proxy
1518 * - <sess> is the session which experienced the error
1519 * - <ctx> may be NULL or should contain any info relevant to the protocol
1520 * - <buf> is the buffer containing the offending data
1521 * - <buf_ofs> is the position of this buffer's input data in the input
1522 * stream, starting at zero. It may be passed as zero if unknown.
1523 * - <buf_out> is the portion of <buf->data> which was already forwarded and
1524 * which precedes the buffer's input. The buffer's input starts at
1525 * buf->head + buf_out.
1526 * - <err_pos> is the pointer to the faulty byte in the buffer's input.
1527 * - <show> is the callback to use to display <ctx>. It may be NULL.
1528 */
1529void proxy_capture_error(struct proxy *proxy, int is_back,
1530 struct proxy *other_end, enum obj_type *target,
1531 const struct session *sess,
1532 const struct buffer *buf, long buf_ofs,
1533 unsigned int buf_out, unsigned int err_pos,
1534 const union error_snapshot_ctx *ctx,
1535 void (*show)(struct buffer *, const struct error_snapshot *))
1536{
1537 struct error_snapshot *es;
1538 unsigned int buf_len;
1539 int len1, len2;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001540 unsigned int ev_id;
1541
1542 ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
1543
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001544 buf_len = b_data(buf) - buf_out;
1545
1546 es = malloc(sizeof(*es) + buf_len);
Willy Tarreauc55015e2018-09-07 19:02:32 +02001547 if (!es)
1548 return;
1549
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001550 es->buf_len = buf_len;
1551 es->ev_id = ev_id;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001552
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001553 len1 = b_size(buf) - buf_len;
1554 if (len1 > buf_len)
1555 len1 = buf_len;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001556
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001557 if (len1) {
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001558 memcpy(es->buf, b_peek(buf, buf_out), len1);
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001559 len2 = buf_len - len1;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001560 if (len2)
1561 memcpy(es->buf + len1, b_orig(buf), len2);
1562 }
1563
1564 es->buf_err = err_pos;
1565 es->when = date; // user-visible date
1566 es->srv = objt_server(target);
1567 es->oe = other_end;
1568 if (objt_conn(sess->origin))
1569 es->src = __objt_conn(sess->origin)->addr.from;
1570 else
1571 memset(&es->src, 0, sizeof(es->src));
1572
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001573 es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
1574 es->buf_out = buf_out;
1575 es->buf_ofs = buf_ofs;
1576
1577 /* be sure to indicate the offset of the first IN byte */
1578 if (es->buf_ofs >= es->buf_len)
1579 es->buf_ofs -= es->buf_len;
1580 else
1581 es->buf_ofs = 0;
1582
1583 /* protocol-specific part now */
1584 if (ctx)
1585 es->ctx = *ctx;
1586 else
1587 memset(&es->ctx, 0, sizeof(es->ctx));
1588 es->show = show;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001589
1590 /* note: we still lock since we have to be certain that nobody is
1591 * dumping the output while we free.
1592 */
1593 HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
1594 if (is_back) {
1595 es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
1596 } else {
1597 es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
1598 }
1599 free(es);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001600 HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
1601}
1602
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001603/* Configure all proxies which lack a maxconn setting to use the global one by
1604 * default. This avoids the common mistake consisting in setting maxconn only
1605 * in the global section and discovering the hard way that it doesn't propagate
1606 * through the frontends. These values are also propagated through the various
1607 * targetted backends, whose fullconn is finally calculated if not yet set.
1608 */
1609void proxy_adjust_all_maxconn()
1610{
1611 struct proxy *curproxy;
1612 struct switching_rule *swrule1, *swrule2;
1613
1614 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1615 if (curproxy->state == PR_STSTOPPED)
1616 continue;
1617
1618 if (!(curproxy->cap & PR_CAP_FE))
1619 continue;
1620
1621 if (!curproxy->maxconn)
1622 curproxy->maxconn = global.maxconn;
1623
1624 /* update the target backend's fullconn count : default_backend */
1625 if (curproxy->defbe.be)
1626 curproxy->defbe.be->tot_fe_maxconn += curproxy->maxconn;
1627 else if ((curproxy->cap & PR_CAP_LISTEN) == PR_CAP_LISTEN)
1628 curproxy->tot_fe_maxconn += curproxy->maxconn;
1629
1630 list_for_each_entry(swrule1, &curproxy->switching_rules, list) {
1631 /* For each target of switching rules, we update their
1632 * tot_fe_maxconn, except if a previous rule points to
1633 * the same backend or to the default backend.
1634 */
1635 if (swrule1->be.backend != curproxy->defbe.be) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001636 /* note: swrule1->be.backend isn't a backend if the rule
1637 * is dynamic, it's an expression instead, so it must not
1638 * be dereferenced as a backend before being certain it is.
1639 */
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001640 list_for_each_entry(swrule2, &curproxy->switching_rules, list) {
1641 if (swrule2 == swrule1) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001642 if (!swrule1->dynamic)
1643 swrule1->be.backend->tot_fe_maxconn += curproxy->maxconn;
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001644 break;
1645 }
1646 else if (!swrule2->dynamic && swrule2->be.backend == swrule1->be.backend) {
1647 /* there are multiple refs of this backend */
1648 break;
1649 }
1650 }
1651 }
1652 }
1653 }
1654
1655 /* automatically compute fullconn if not set. We must not do it in the
1656 * loop above because cross-references are not yet fully resolved.
1657 */
1658 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1659 if (curproxy->state == PR_STSTOPPED)
1660 continue;
1661
1662 /* If <fullconn> is not set, let's set it to 10% of the sum of
1663 * the possible incoming frontend's maxconns.
1664 */
1665 if (!curproxy->fullconn && (curproxy->cap & PR_CAP_BE)) {
1666 /* we have the sum of the maxconns in <total>. We only
1667 * keep 10% of that sum to set the default fullconn, with
1668 * a hard minimum of 1 (to avoid a divide by zero).
1669 */
1670 curproxy->fullconn = (curproxy->tot_fe_maxconn + 9) / 10;
1671 if (!curproxy->fullconn)
1672 curproxy->fullconn = 1;
1673 }
1674 }
1675}
1676
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001677/* Config keywords below */
1678
Willy Tarreaudc13c112013-06-21 23:16:39 +02001679static struct cfg_kw_list cfg_kws = {ILH, {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001680 { CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001681 { CFG_LISTEN, "timeout", proxy_parse_timeout },
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +02001682 { CFG_LISTEN, "clitimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1683 { CFG_LISTEN, "contimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1684 { CFG_LISTEN, "srvtimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001685 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreauc35362a2014-04-25 13:58:37 +02001686 { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +02001687 { CFG_LISTEN, "declare", proxy_parse_declare },
Olivier Houcharda254a372019-04-05 15:30:12 +02001688 { CFG_LISTEN, "retry-on", proxy_parse_retry_on },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001689 { 0, NULL, NULL },
1690}};
1691
Willy Tarreau0108d902018-11-25 19:14:37 +01001692INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
1693
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001694/* Expects to find a frontend named <arg> and returns it, otherwise displays various
1695 * adequate error messages and returns NULL. This function is designed to be used by
1696 * functions requiring a frontend on the CLI.
1697 */
1698struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
1699{
1700 struct proxy *px;
1701
1702 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001703 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001704 appctx->ctx.cli.msg = "A frontend name is expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001705 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001706 return NULL;
1707 }
1708
1709 px = proxy_fe_by_name(arg);
1710 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001711 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001712 appctx->ctx.cli.msg = "No such frontend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001713 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001714 return NULL;
1715 }
1716 return px;
1717}
1718
Olivier Houchard614f8d72017-03-14 20:08:46 +01001719/* Expects to find a backend named <arg> and returns it, otherwise displays various
1720 * adequate error messages and returns NULL. This function is designed to be used by
1721 * functions requiring a frontend on the CLI.
1722 */
1723struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
1724{
1725 struct proxy *px;
1726
1727 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001728 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001729 appctx->ctx.cli.msg = "A backend name is expected.\n";
1730 appctx->st0 = CLI_ST_PRINT;
1731 return NULL;
1732 }
1733
1734 px = proxy_be_by_name(arg);
1735 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001736 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001737 appctx->ctx.cli.msg = "No such backend.\n";
1738 appctx->st0 = CLI_ST_PRINT;
1739 return NULL;
1740 }
1741 return px;
1742}
1743
1744
William Lallemanda6c5f332016-11-19 02:25:36 +01001745/* parse a "show servers" CLI line, returns 0 if it wants to start the dump or
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001746 * 1 if it stops immediately. If an argument is specified, it will set the proxy
1747 * pointer into cli.p0 and its ID into cli.i0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001748 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001749static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemanda6c5f332016-11-19 02:25:36 +01001750{
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001751 struct proxy *px;
William Lallemanda6c5f332016-11-19 02:25:36 +01001752
1753 /* check if a backend name has been provided */
1754 if (*args[3]) {
1755 /* read server state from local file */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001756 px = proxy_be_by_name(args[3]);
William Lallemanda6c5f332016-11-19 02:25:36 +01001757
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001758 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001759 appctx->ctx.cli.severity = LOG_ERR;
William Lallemanda6c5f332016-11-19 02:25:36 +01001760 appctx->ctx.cli.msg = "Can't find backend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001761 appctx->st0 = CLI_ST_PRINT;
William Lallemanda6c5f332016-11-19 02:25:36 +01001762 return 1;
1763 }
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001764 appctx->ctx.cli.p0 = px;
1765 appctx->ctx.cli.i0 = px->uuid;
William Lallemanda6c5f332016-11-19 02:25:36 +01001766 }
1767 return 0;
1768}
1769
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001770/* dumps server state information into <buf> for all the servers found in backend cli.p0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001771 * These information are all the parameters which may change during HAProxy runtime.
1772 * By default, we only export to the last known server state file format.
1773 * These information can be used at next startup to recover same level of server state.
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001774 * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
1775 * pointer from cli.p1.
William Lallemanda6c5f332016-11-19 02:25:36 +01001776 */
Willy Tarreau83061a82018-07-13 11:56:34 +02001777static int dump_servers_state(struct stream_interface *si, struct buffer *buf)
William Lallemanda6c5f332016-11-19 02:25:36 +01001778{
1779 struct appctx *appctx = __objt_appctx(si->end);
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001780 struct proxy *px = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001781 struct server *srv;
1782 char srv_addr[INET6_ADDRSTRLEN + 1];
1783 time_t srv_time_since_last_change;
1784 int bk_f_forced_id, srv_f_forced_id;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001785 char *srvrecord;
William Lallemanda6c5f332016-11-19 02:25:36 +01001786
William Lallemanda6c5f332016-11-19 02:25:36 +01001787 /* we don't want to report any state if the backend is not enabled on this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001788 if (!(proc_mask(px->bind_proc) & pid_bit))
William Lallemanda6c5f332016-11-19 02:25:36 +01001789 return 1;
1790
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001791 if (!appctx->ctx.cli.p1)
1792 appctx->ctx.cli.p1 = px->srv;
William Lallemanda6c5f332016-11-19 02:25:36 +01001793
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001794 for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
1795 srv = appctx->ctx.cli.p1;
William Lallemanda6c5f332016-11-19 02:25:36 +01001796 srv_addr[0] = '\0';
1797
1798 switch (srv->addr.ss_family) {
1799 case AF_INET:
1800 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
1801 srv_addr, INET_ADDRSTRLEN + 1);
1802 break;
1803 case AF_INET6:
1804 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
1805 srv_addr, INET6_ADDRSTRLEN + 1);
1806 break;
Daniel Corbett9215ffa2018-05-19 19:43:24 -04001807 default:
1808 memcpy(srv_addr, "-\0", 2);
1809 break;
William Lallemanda6c5f332016-11-19 02:25:36 +01001810 }
1811 srv_time_since_last_change = now.tv_sec - srv->last_change;
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001812 bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001813 srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
1814
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001815 srvrecord = NULL;
1816 if (srv->srvrq && srv->srvrq->name)
1817 srvrecord = srv->srvrq->name;
1818
William Lallemanda6c5f332016-11-19 02:25:36 +01001819 chunk_appendf(buf,
1820 "%d %s "
1821 "%d %s %s "
1822 "%d %d %d %d %ld "
1823 "%d %d %d %d %d "
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001824 "%d %d %s %u %s"
William Lallemanda6c5f332016-11-19 02:25:36 +01001825 "\n",
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001826 px->uuid, px->id,
William Lallemanda6c5f332016-11-19 02:25:36 +01001827 srv->puid, srv->id, srv_addr,
Emeric Brun52a91d32017-08-31 14:41:55 +02001828 srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
William Lallemanda6c5f332016-11-19 02:25:36 +01001829 srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001830 bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
1831 srvrecord ? srvrecord : "-");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001832 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001833 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001834 return 0;
1835 }
1836 }
1837 return 1;
1838}
1839
1840/* Parses backend list or simply use backend name provided by the user to return
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001841 * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
1842 * non-null.
William Lallemanda6c5f332016-11-19 02:25:36 +01001843 */
1844static int cli_io_handler_servers_state(struct appctx *appctx)
1845{
1846 struct stream_interface *si = appctx->owner;
William Lallemanda6c5f332016-11-19 02:25:36 +01001847 struct proxy *curproxy;
1848
1849 chunk_reset(&trash);
1850
1851 if (appctx->st2 == STAT_ST_INIT) {
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001852 if (!appctx->ctx.cli.p0)
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001853 appctx->ctx.cli.p0 = proxies_list;
William Lallemanda6c5f332016-11-19 02:25:36 +01001854 appctx->st2 = STAT_ST_HEAD;
1855 }
1856
1857 if (appctx->st2 == STAT_ST_HEAD) {
1858 chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001859 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001860 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001861 return 0;
1862 }
1863 appctx->st2 = STAT_ST_INFO;
1864 }
1865
1866 /* STAT_ST_INFO */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001867 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1868 curproxy = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001869 /* servers are only in backends */
1870 if (curproxy->cap & PR_CAP_BE) {
1871 if (!dump_servers_state(si, &trash))
1872 return 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001873 }
1874 /* only the selected proxy is dumped */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001875 if (appctx->ctx.cli.i0)
William Lallemanda6c5f332016-11-19 02:25:36 +01001876 break;
1877 }
1878
1879 return 1;
1880}
1881
Willy Tarreau608ea592016-12-16 18:01:15 +01001882/* Parses backend list and simply report backend names. It keeps the proxy
1883 * pointer in cli.p0.
1884 */
William Lallemand933efcd2016-11-22 12:34:16 +01001885static int cli_io_handler_show_backend(struct appctx *appctx)
1886{
William Lallemand933efcd2016-11-22 12:34:16 +01001887 struct stream_interface *si = appctx->owner;
1888 struct proxy *curproxy;
1889
1890 chunk_reset(&trash);
1891
Willy Tarreau608ea592016-12-16 18:01:15 +01001892 if (!appctx->ctx.cli.p0) {
William Lallemand933efcd2016-11-22 12:34:16 +01001893 chunk_printf(&trash, "# name\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001894 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001895 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001896 return 0;
1897 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001898 appctx->ctx.cli.p0 = proxies_list;
William Lallemand933efcd2016-11-22 12:34:16 +01001899 }
1900
Willy Tarreau608ea592016-12-16 18:01:15 +01001901 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1902 curproxy = appctx->ctx.cli.p0;
William Lallemand933efcd2016-11-22 12:34:16 +01001903
1904 /* looking for backends only */
1905 if (!(curproxy->cap & PR_CAP_BE))
1906 continue;
1907
1908 /* we don't want to list a backend which is bound to this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001909 if (!(proc_mask(curproxy->bind_proc) & pid_bit))
William Lallemand933efcd2016-11-22 12:34:16 +01001910 continue;
1911
1912 chunk_appendf(&trash, "%s\n", curproxy->id);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001913 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001914 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001915 return 0;
1916 }
1917 }
1918
1919 return 1;
1920}
William Lallemanda6c5f332016-11-19 02:25:36 +01001921
Willy Tarreaua275a372018-08-21 14:50:44 +02001922/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
1923 *
1924 * Grabs the proxy lock and each server's lock.
1925 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001926static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001927{
1928 struct proxy *px;
1929 struct server *s;
1930
1931 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1932 return 1;
1933
1934 px = cli_find_backend(appctx, args[3]);
1935 if (!px)
1936 return 1;
1937
Willy Tarreaua275a372018-08-21 14:50:44 +02001938 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1939
Olivier Houchard614f8d72017-03-14 20:08:46 +01001940 px->ck_opts |= PR_CK_DYNAMIC;
1941
Willy Tarreaua275a372018-08-21 14:50:44 +02001942 for (s = px->srv; s != NULL; s = s->next) {
1943 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001944 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001945 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1946 }
1947
1948 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001949
1950 return 1;
1951}
1952
Willy Tarreaua275a372018-08-21 14:50:44 +02001953/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
1954 *
1955 * Grabs the proxy lock and each server's lock.
1956 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001957static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001958{
1959 struct proxy *px;
1960 struct server *s;
1961
1962 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1963 return 1;
1964
1965 px = cli_find_backend(appctx, args[3]);
1966 if (!px)
1967 return 1;
1968
Willy Tarreaua275a372018-08-21 14:50:44 +02001969 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1970
Olivier Houchard614f8d72017-03-14 20:08:46 +01001971 px->ck_opts &= ~PR_CK_DYNAMIC;
1972
1973 for (s = px->srv; s != NULL; s = s->next) {
Willy Tarreaua275a372018-08-21 14:50:44 +02001974 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001975 if (!(s->flags & SRV_F_COOKIESET)) {
1976 free(s->cookie);
1977 s->cookie = NULL;
1978 }
Willy Tarreaua275a372018-08-21 14:50:44 +02001979 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001980 }
1981
Willy Tarreaua275a372018-08-21 14:50:44 +02001982 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
1983
Olivier Houchard614f8d72017-03-14 20:08:46 +01001984 return 1;
1985}
1986
Willy Tarreaua275a372018-08-21 14:50:44 +02001987/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
1988 *
1989 * Grabs the proxy lock and each server's lock.
1990 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001991static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001992{
1993 struct proxy *px;
1994 struct server *s;
1995 char *newkey;
1996
1997 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1998 return 1;
1999
2000 px = cli_find_backend(appctx, args[3]);
2001 if (!px)
2002 return 1;
2003
2004 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002005 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01002006 appctx->ctx.cli.msg = "String value expected.\n";
2007 appctx->st0 = CLI_ST_PRINT;
2008 return 1;
2009 }
2010
2011 newkey = strdup(args[4]);
2012 if (!newkey) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002013 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01002014 appctx->ctx.cli.msg = "Failed to allocate memory.\n";
2015 appctx->st0 = CLI_ST_PRINT;
2016 return 1;
2017 }
Willy Tarreaua275a372018-08-21 14:50:44 +02002018
2019 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2020
Olivier Houchard614f8d72017-03-14 20:08:46 +01002021 free(px->dyncookie_key);
2022 px->dyncookie_key = newkey;
2023
Willy Tarreaua275a372018-08-21 14:50:44 +02002024 for (s = px->srv; s != NULL; s = s->next) {
2025 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002026 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02002027 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
2028 }
2029
2030 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002031
2032 return 1;
2033}
2034
Willy Tarreaua275a372018-08-21 14:50:44 +02002035/* Parses the "set maxconn frontend" directive, it always returns 1.
2036 *
2037 * Grabs the proxy lock.
2038 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002039static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002040{
2041 struct proxy *px;
2042 struct listener *l;
2043 int v;
2044
2045 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2046 return 1;
2047
2048 px = cli_find_frontend(appctx, args[3]);
2049 if (!px)
2050 return 1;
2051
2052 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002053 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002054 appctx->ctx.cli.msg = "Integer value expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002055 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002056 return 1;
2057 }
2058
2059 v = atoi(args[4]);
2060 if (v < 0) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002061 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002062 appctx->ctx.cli.msg = "Value out of range.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002063 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002064 return 1;
2065 }
2066
2067 /* OK, the value is fine, so we assign it to the proxy and to all of
2068 * its listeners. The blocked ones will be dequeued.
2069 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002070 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2071
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002072 px->maxconn = v;
2073 list_for_each_entry(l, &px->conf.listeners, by_fe) {
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002074 if (l->state == LI_FULL)
2075 resume_listener(l);
2076 }
2077
2078 if (px->maxconn > px->feconn && !LIST_ISEMPTY(&px->listener_queue))
2079 dequeue_all_listeners(&px->listener_queue);
2080
Willy Tarreaua275a372018-08-21 14:50:44 +02002081 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2082
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002083 return 1;
2084}
2085
Willy Tarreaua275a372018-08-21 14:50:44 +02002086/* Parses the "shutdown frontend" directive, it always returns 1.
2087 *
2088 * Grabs the proxy lock.
2089 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002090static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002091{
2092 struct proxy *px;
2093
2094 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2095 return 1;
2096
2097 px = cli_find_frontend(appctx, args[2]);
2098 if (!px)
2099 return 1;
2100
2101 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002102 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002103 appctx->ctx.cli.msg = "Frontend was already shut down.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002104 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002105 return 1;
2106 }
2107
Christopher Faulet767a84b2017-11-24 16:50:31 +01002108 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2109 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002110 send_log(px, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2111 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreaua275a372018-08-21 14:50:44 +02002112
2113 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002114 stop_proxy(px);
Willy Tarreaua275a372018-08-21 14:50:44 +02002115 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2116
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002117 return 1;
2118}
2119
Willy Tarreaua275a372018-08-21 14:50:44 +02002120/* Parses the "disable frontend" directive, it always returns 1.
2121 *
2122 * Grabs the proxy lock.
2123 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002124static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002125{
2126 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002127 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002128
2129 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2130 return 1;
2131
2132 px = cli_find_frontend(appctx, args[2]);
2133 if (!px)
2134 return 1;
2135
2136 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002137 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002138 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot disable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002139 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002140 return 1;
2141 }
2142
2143 if (px->state == PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002144 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002145 appctx->ctx.cli.msg = "Frontend is already disabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002146 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002147 return 1;
2148 }
2149
Willy Tarreaua275a372018-08-21 14:50:44 +02002150 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2151 ret = pause_proxy(px);
2152 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2153
2154 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002155 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002156 appctx->ctx.cli.msg = "Failed to pause frontend, check logs for precise cause.\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 return 1;
2161}
2162
Willy Tarreaua275a372018-08-21 14:50:44 +02002163/* Parses the "enable frontend" directive, it always returns 1.
2164 *
2165 * Grabs the proxy lock.
2166 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002167static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002168{
2169 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002170 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002171
2172 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2173 return 1;
2174
2175 px = cli_find_frontend(appctx, args[2]);
2176 if (!px)
2177 return 1;
2178
2179 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002180 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002181 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot enable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002182 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002183 return 1;
2184 }
2185
2186 if (px->state != PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002187 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002188 appctx->ctx.cli.msg = "Frontend is already enabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002189 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002190 return 1;
2191 }
2192
Willy Tarreaua275a372018-08-21 14:50:44 +02002193 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2194 ret = resume_proxy(px);
2195 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2196
2197 if (!ret) {
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 = "Failed to resume frontend, check logs for precise cause (port conflict?).\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 return 1;
2204}
2205
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002206/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
2207 * now.
2208 */
2209static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
2210{
2211 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2212 return 1;
2213
2214 if (*args[2]) {
2215 struct proxy *px;
2216
2217 px = proxy_find_by_name(args[2], 0, 0);
2218 if (px)
2219 appctx->ctx.errors.iid = px->uuid;
2220 else
2221 appctx->ctx.errors.iid = atoi(args[2]);
2222
2223 if (!appctx->ctx.errors.iid) {
2224 appctx->ctx.cli.severity = LOG_ERR;
2225 appctx->ctx.cli.msg = "No such proxy.\n";
2226 appctx->st0 = CLI_ST_PRINT;
2227 return 1;
2228 }
2229 }
2230 else
2231 appctx->ctx.errors.iid = -1; // dump all proxies
2232
2233 appctx->ctx.errors.flag = 0;
2234 if (strcmp(args[3], "request") == 0)
2235 appctx->ctx.errors.flag |= 4; // ignore response
2236 else if (strcmp(args[3], "response") == 0)
2237 appctx->ctx.errors.flag |= 2; // ignore request
2238 appctx->ctx.errors.px = NULL;
2239 return 0;
2240}
2241
2242/* This function dumps all captured errors onto the stream interface's
2243 * read buffer. It returns 0 if the output buffer is full and it needs
2244 * to be called again, otherwise non-zero.
2245 */
2246static int cli_io_handler_show_errors(struct appctx *appctx)
2247{
2248 struct stream_interface *si = appctx->owner;
2249 extern const char *monthname[12];
2250
2251 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
2252 return 1;
2253
2254 chunk_reset(&trash);
2255
2256 if (!appctx->ctx.errors.px) {
2257 /* the function had not been called yet, let's prepare the
2258 * buffer for a response.
2259 */
2260 struct tm tm;
2261
2262 get_localtime(date.tv_sec, &tm);
2263 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
2264 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2265 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
2266 error_snapshot_id);
2267
Willy Tarreau36b27362018-09-07 19:55:44 +02002268 if (ci_putchk(si_ic(si), &trash) == -1)
2269 goto cant_send;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002270
2271 appctx->ctx.errors.px = proxies_list;
2272 appctx->ctx.errors.bol = 0;
2273 appctx->ctx.errors.ptr = -1;
2274 }
2275
2276 /* we have two inner loops here, one for the proxy, the other one for
2277 * the buffer.
2278 */
2279 while (appctx->ctx.errors.px) {
2280 struct error_snapshot *es;
2281
Willy Tarreau36b27362018-09-07 19:55:44 +02002282 HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2283
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002284 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002285 es = appctx->ctx.errors.px->invalid_req;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002286 if (appctx->ctx.errors.flag & 2) // skip req
2287 goto next;
2288 }
2289 else {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002290 es = appctx->ctx.errors.px->invalid_rep;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002291 if (appctx->ctx.errors.flag & 4) // skip resp
2292 goto next;
2293 }
2294
Willy Tarreauc55015e2018-09-07 19:02:32 +02002295 if (!es)
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002296 goto next;
2297
2298 if (appctx->ctx.errors.iid >= 0 &&
2299 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
2300 es->oe->uuid != appctx->ctx.errors.iid)
2301 goto next;
2302
2303 if (appctx->ctx.errors.ptr < 0) {
2304 /* just print headers now */
2305
2306 char pn[INET6_ADDRSTRLEN];
2307 struct tm tm;
2308 int port;
2309
2310 get_localtime(es->when.tv_sec, &tm);
2311 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
2312 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2313 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
2314
2315 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
2316 case AF_INET:
2317 case AF_INET6:
2318 port = get_host_port(&es->src);
2319 break;
2320 default:
2321 port = 0;
2322 }
2323
2324 switch (appctx->ctx.errors.flag & 1) {
2325 case 0:
2326 chunk_appendf(&trash,
2327 " frontend %s (#%d): invalid request\n"
2328 " backend %s (#%d)",
2329 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2330 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
2331 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
2332 break;
2333 case 1:
2334 chunk_appendf(&trash,
2335 " backend %s (#%d): invalid response\n"
2336 " frontend %s (#%d)",
2337 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2338 es->oe->id, es->oe->uuid);
2339 break;
2340 }
2341
2342 chunk_appendf(&trash,
2343 ", server %s (#%d), event #%u, src %s:%d\n"
2344 " buffer starts at %llu (including %u out), %u free,\n"
2345 " len %u, wraps at %u, error at position %u\n",
2346 es->srv ? es->srv->id : "<NONE>",
2347 es->srv ? es->srv->puid : -1,
2348 es->ev_id, pn, port,
2349 es->buf_ofs, es->buf_out,
2350 global.tune.bufsize - es->buf_out - es->buf_len,
2351 es->buf_len, es->buf_wrap, es->buf_err);
2352
2353 if (es->show)
2354 es->show(&trash, es);
2355
2356 chunk_appendf(&trash, " \n");
2357
Willy Tarreau36b27362018-09-07 19:55:44 +02002358 if (ci_putchk(si_ic(si), &trash) == -1)
2359 goto cant_send_unlock;
2360
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002361 appctx->ctx.errors.ptr = 0;
2362 appctx->ctx.errors.ev_id = es->ev_id;
2363 }
2364
2365 if (appctx->ctx.errors.ev_id != es->ev_id) {
2366 /* the snapshot changed while we were dumping it */
2367 chunk_appendf(&trash,
2368 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau36b27362018-09-07 19:55:44 +02002369 if (ci_putchk(si_ic(si), &trash) == -1)
2370 goto cant_send_unlock;
2371
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002372 goto next;
2373 }
2374
2375 /* OK, ptr >= 0, so we have to dump the current line */
Willy Tarreau4bc7d902018-09-07 20:07:17 +02002376 while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002377 int newptr;
2378 int newline;
2379
2380 newline = appctx->ctx.errors.bol;
2381 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
2382 if (newptr == appctx->ctx.errors.ptr)
Willy Tarreau36b27362018-09-07 19:55:44 +02002383 goto cant_send_unlock;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002384
Willy Tarreau36b27362018-09-07 19:55:44 +02002385 if (ci_putchk(si_ic(si), &trash) == -1)
2386 goto cant_send_unlock;
2387
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002388 appctx->ctx.errors.ptr = newptr;
2389 appctx->ctx.errors.bol = newline;
2390 };
2391 next:
Willy Tarreau36b27362018-09-07 19:55:44 +02002392 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002393 appctx->ctx.errors.bol = 0;
2394 appctx->ctx.errors.ptr = -1;
2395 appctx->ctx.errors.flag ^= 1;
2396 if (!(appctx->ctx.errors.flag & 1))
2397 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
2398 }
2399
2400 /* dump complete */
2401 return 1;
Willy Tarreau36b27362018-09-07 19:55:44 +02002402
2403 cant_send_unlock:
2404 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2405 cant_send:
Willy Tarreaudb398432018-11-15 11:08:52 +01002406 si_rx_room_blk(si);
Willy Tarreau36b27362018-09-07 19:55:44 +02002407 return 0;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002408}
2409
William Lallemanda6c5f332016-11-19 02:25:36 +01002410/* register cli keywords */
2411static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau15b9e682016-11-24 11:55:28 +01002412 { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
2413 { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002414 { { "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 +01002415 { { "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 +01002416 { { "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 +01002417 { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
Olivier Houchard614f8d72017-03-14 20:08:46 +01002418 { { "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 },
2419 { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
2420 { { "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 +02002421 { { "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 +01002422 {{},}
2423}};
2424
Willy Tarreau0108d902018-11-25 19:14:37 +01002425INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002426
2427/*
2428 * Local variables:
2429 * c-indent-level: 8
2430 * c-basic-offset: 8
2431 * End:
2432 */