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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * Proxy variables and functions.
3 *
Willy Tarreau3a7d2072009-03-05 23:48:25 +01004 * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <fcntl.h>
14#include <unistd.h>
Willy Tarreauc8f24f82007-11-30 18:38:35 +010015#include <string.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020016#include <sys/types.h>
17#include <sys/socket.h>
18#include <sys/stat.h>
19
Willy Tarreau2dd0d472006-06-29 17:53:05 +020020#include <common/defaults.h>
Willy Tarreau9de1bbd2008-07-09 20:34:27 +020021#include <common/cfgparse.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020022#include <common/compat.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020023#include <common/config.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010024#include <common/errors.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010025#include <common/initcall.h>
Willy Tarreau4d2d0982007-05-14 00:39:29 +020026#include <common/memory.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020027#include <common/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020028
Willy Tarreaucfd837f2014-03-15 07:43:51 +010029#include <eb32tree.h>
30#include <ebistree.h>
31
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +020032#include <types/capture.h>
Willy Tarreau960f2cb2016-11-24 12:02:29 +010033#include <types/cli.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020034#include <types/global.h>
Willy Tarreau3fdb3662012-11-12 00:42:33 +010035#include <types/obj_type.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020036#include <types/peers.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010037#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020038
William Lallemanda6c5f332016-11-19 02:25:36 +010039#include <proto/applet.h>
40#include <proto/cli.h>
Alexandre Cassen87ea5482007-10-11 20:48:58 +020041#include <proto/backend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020042#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020043#include <proto/filters.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020044#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020045#include <proto/log.h>
Willy Tarreaue6b98942007-10-29 01:09:36 +010046#include <proto/proto_tcp.h>
Christopher Fauletfc9cfe42019-07-16 14:54:53 +020047#include <proto/http_ana.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020048#include <proto/proxy.h>
Olivier Houchard614f8d72017-03-14 20:08:46 +010049#include <proto/server.h>
Willy Tarreaud0807c32010-08-27 18:26:11 +020050#include <proto/signal.h>
Willy Tarreaufb0afa72015-04-03 14:46:27 +020051#include <proto/stream.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010052#include <proto/stream_interface.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020053#include <proto/task.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020054
55
Willy Tarreau918ff602011-07-25 16:33:49 +020056int listeners; /* # of proxy listeners, set by cfgparse */
Olivier Houchardfbc74e82017-11-24 16:54:05 +010057struct proxy *proxies_list = NULL; /* list of all existing proxies */
Willy Tarreau53fb4ae2009-10-04 23:04:08 +020058struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
Willy Tarreauf79d9502014-03-15 07:22:35 +010059struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */
Willy Tarreau10479e42010-12-12 14:00:34 +010060unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
Willy Tarreaubaaee002006-06-26 02:48:02 +020061
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010062/* proxy->options */
63const struct cfg_opt cfg_opts[] =
64{
65 { "abortonclose", PR_O_ABRT_CLOSE, PR_CAP_BE, 0, 0 },
66 { "allbackups", PR_O_USE_ALL_BK, PR_CAP_BE, 0, 0 },
67 { "checkcache", PR_O_CHK_CACHE, PR_CAP_BE, 0, PR_MODE_HTTP },
68 { "clitcpka", PR_O_TCP_CLI_KA, PR_CAP_FE, 0, 0 },
69 { "contstats", PR_O_CONTSTATS, PR_CAP_FE, 0, 0 },
70 { "dontlognull", PR_O_NULLNOLOG, PR_CAP_FE, 0, 0 },
71 { "http_proxy", PR_O_HTTP_PROXY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
72 { "http-buffer-request", PR_O_WREQ_BODY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
73 { "http-ignore-probes", PR_O_IGNORE_PRB, PR_CAP_FE, 0, PR_MODE_HTTP },
74 { "prefer-last-server", PR_O_PREF_LAST, PR_CAP_BE, 0, PR_MODE_HTTP },
75 { "logasap", PR_O_LOGASAP, PR_CAP_FE, 0, 0 },
76 { "nolinger", PR_O_TCP_NOLING, PR_CAP_FE | PR_CAP_BE, 0, 0 },
77 { "persist", PR_O_PERSIST, PR_CAP_BE, 0, 0 },
78 { "srvtcpka", PR_O_TCP_SRV_KA, PR_CAP_BE, 0, 0 },
Willy Tarreaue5733232019-05-22 19:24:06 +020079#ifdef USE_TPROXY
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010080 { "transparent", PR_O_TRANSP, PR_CAP_BE, 0, 0 },
81#else
82 { "transparent", 0, 0, 0, 0 },
83#endif
84
85 { NULL, 0, 0, 0, 0 }
86};
87
88/* proxy->options2 */
89const struct cfg_opt cfg_opts2[] =
90{
Willy Tarreaue5733232019-05-22 19:24:06 +020091#ifdef USE_LINUX_SPLICE
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010092 { "splice-request", PR_O2_SPLIC_REQ, PR_CAP_FE|PR_CAP_BE, 0, 0 },
93 { "splice-response", PR_O2_SPLIC_RTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
94 { "splice-auto", PR_O2_SPLIC_AUT, PR_CAP_FE|PR_CAP_BE, 0, 0 },
95#else
96 { "splice-request", 0, 0, 0, 0 },
97 { "splice-response", 0, 0, 0, 0 },
98 { "splice-auto", 0, 0, 0, 0 },
99#endif
100 { "accept-invalid-http-request", PR_O2_REQBUG_OK, PR_CAP_FE, 0, PR_MODE_HTTP },
101 { "accept-invalid-http-response", PR_O2_RSPBUG_OK, PR_CAP_BE, 0, PR_MODE_HTTP },
102 { "dontlog-normal", PR_O2_NOLOGNORM, PR_CAP_FE, 0, 0 },
103 { "log-separate-errors", PR_O2_LOGERRORS, PR_CAP_FE, 0, 0 },
104 { "log-health-checks", PR_O2_LOGHCHKS, PR_CAP_BE, 0, 0 },
105 { "socket-stats", PR_O2_SOCKSTAT, PR_CAP_FE, 0, 0 },
106 { "tcp-smart-accept", PR_O2_SMARTACC, PR_CAP_FE, 0, 0 },
107 { "tcp-smart-connect", PR_O2_SMARTCON, PR_CAP_BE, 0, 0 },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100108 { "independent-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
109 { "http-use-proxy-header", PR_O2_USE_PXHDR, PR_CAP_FE, 0, PR_MODE_HTTP },
110 { "http-pretend-keepalive", PR_O2_FAKE_KA, PR_CAP_BE, 0, PR_MODE_HTTP },
111 { "http-no-delay", PR_O2_NODELAY, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Faulet31930372019-07-15 10:16:58 +0200112 { "http-use-htx", 0, PR_CAP_FE|PR_CAP_BE, 0, 0 }, // deprecated
Christopher Faulet98fbe952019-07-22 16:18:24 +0200113
114 {"h1-case-adjust-bogus-client", PR_O2_H1_ADJ_BUGCLI, PR_CAP_FE, 0, PR_MODE_HTTP },
115 {"h1-case-adjust-bogus-server", PR_O2_H1_ADJ_BUGSRV, PR_CAP_BE, 0, PR_MODE_HTTP },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100116 { NULL, 0, 0, 0 }
117};
118
Willy Tarreau977b8e42006-12-29 14:19:17 +0100119/*
Willy Tarreau816eb542007-11-04 07:04:43 +0100120 * This function returns a string containing a name describing capabilities to
121 * report comprehensible error messages. Specifically, it will return the words
Christopher Faulet898566e2016-10-26 11:06:28 +0200122 * "frontend", "backend" when appropriate, or "proxy" for all other
Willy Tarreau816eb542007-11-04 07:04:43 +0100123 * cases including the proxies declared in "listen" mode.
Willy Tarreau977b8e42006-12-29 14:19:17 +0100124 */
Willy Tarreau816eb542007-11-04 07:04:43 +0100125const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +0100126{
Willy Tarreau816eb542007-11-04 07:04:43 +0100127 if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
128 if (cap & PR_CAP_FE)
129 return "frontend";
130 else if (cap & PR_CAP_BE)
131 return "backend";
Willy Tarreau816eb542007-11-04 07:04:43 +0100132 }
133 return "proxy";
Willy Tarreau977b8e42006-12-29 14:19:17 +0100134}
135
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100136/*
137 * This function returns a string containing the mode of the proxy in a format
138 * suitable for error messages.
139 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100140const char *proxy_mode_str(int mode) {
141
142 if (mode == PR_MODE_TCP)
143 return "tcp";
144 else if (mode == PR_MODE_HTTP)
145 return "http";
146 else if (mode == PR_MODE_HEALTH)
147 return "health";
William Lallemandcf62f7e2018-10-26 14:47:40 +0200148 else if (mode == PR_MODE_CLI)
149 return "cli";
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100150 else
151 return "unknown";
152}
153
Willy Tarreauf3950172009-10-10 18:35:51 +0200154/*
155 * This function scans the list of backends and servers to retrieve the first
156 * backend and the first server with the given names, and sets them in both
157 * parameters. It returns zero if either is not found, or non-zero and sets
158 * the ones it did not found to NULL. If a NULL pointer is passed for the
159 * backend, only the pointer to the server will be updated.
160 */
161int get_backend_server(const char *bk_name, const char *sv_name,
162 struct proxy **bk, struct server **sv)
163{
164 struct proxy *p;
165 struct server *s;
Willy Tarreau7ecc4202014-03-15 07:57:11 +0100166 int sid;
Willy Tarreauf3950172009-10-10 18:35:51 +0200167
168 *sv = NULL;
169
Willy Tarreau050536d2012-10-04 08:47:34 +0200170 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200171 if (*sv_name == '#')
172 sid = atoi(sv_name + 1);
173
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200174 p = proxy_be_by_name(bk_name);
Willy Tarreauf3950172009-10-10 18:35:51 +0200175 if (bk)
176 *bk = p;
177 if (!p)
178 return 0;
179
180 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100181 if ((sid >= 0 && s->puid == sid) ||
182 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200183 break;
184 *sv = s;
185 if (!s)
186 return 0;
187 return 1;
188}
189
Willy Tarreaue219db72007-12-03 01:30:13 +0100190/* This function parses a "timeout" statement in a proxy section. It returns
191 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200192 * return zero, it will write an error or warning message into a preallocated
193 * buffer returned at <err>. The trailing is not be written. The function must
194 * be called with <args> pointing to the first command line word, with <proxy>
195 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
196 * As a special case for compatibility with older configs, it also accepts
197 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100198 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200199static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200200 struct proxy *defpx, const char *file, int line,
201 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100202{
203 unsigned timeout;
204 int retval, cap;
205 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200206 int *tv = NULL;
207 int *td = NULL;
Willy Tarreaue219db72007-12-03 01:30:13 +0100208
209 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200210
211 /* simply skip "timeout" but remain compatible with old form */
212 if (strcmp(args[0], "timeout") == 0)
213 args++;
214
Willy Tarreaue219db72007-12-03 01:30:13 +0100215 name = args[0];
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200216 if (!strcmp(args[0], "client")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100217 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100218 tv = &proxy->timeout.client;
219 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100220 cap = PR_CAP_FE;
221 } else if (!strcmp(args[0], "tarpit")) {
222 tv = &proxy->timeout.tarpit;
223 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100224 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100225 } else if (!strcmp(args[0], "http-keep-alive")) {
226 tv = &proxy->timeout.httpka;
227 td = &defpx->timeout.httpka;
228 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100229 } else if (!strcmp(args[0], "http-request")) {
230 tv = &proxy->timeout.httpreq;
231 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200232 cap = PR_CAP_FE | PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200233 } else if (!strcmp(args[0], "server")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100234 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100235 tv = &proxy->timeout.server;
236 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100237 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200238 } else if (!strcmp(args[0], "connect")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100239 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100240 tv = &proxy->timeout.connect;
241 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100242 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100243 } else if (!strcmp(args[0], "check")) {
244 tv = &proxy->timeout.check;
245 td = &defpx->timeout.check;
246 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100247 } else if (!strcmp(args[0], "queue")) {
248 tv = &proxy->timeout.queue;
249 td = &defpx->timeout.queue;
250 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200251 } else if (!strcmp(args[0], "tunnel")) {
252 tv = &proxy->timeout.tunnel;
253 td = &defpx->timeout.tunnel;
254 cap = PR_CAP_BE;
Willy Tarreau05cdd962014-05-10 14:30:07 +0200255 } else if (!strcmp(args[0], "client-fin")) {
256 tv = &proxy->timeout.clientfin;
257 td = &defpx->timeout.clientfin;
258 cap = PR_CAP_FE;
259 } else if (!strcmp(args[0], "server-fin")) {
260 tv = &proxy->timeout.serverfin;
261 td = &defpx->timeout.serverfin;
262 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200263 } else if (!strcmp(args[0], "clitimeout")) {
264 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout client'.", args[0]);
265 return -1;
266 } else if (!strcmp(args[0], "srvtimeout")) {
267 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout server'.", args[0]);
268 return -1;
269 } else if (!strcmp(args[0], "contimeout")) {
270 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout connect'.", args[0]);
271 return -1;
Willy Tarreaue219db72007-12-03 01:30:13 +0100272 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200273 memprintf(err,
274 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreau05cdd962014-05-10 14:30:07 +0200275 "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', "
276 "'client-fin' and 'server-fin' (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200277 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100278 return -1;
279 }
280
281 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200282 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100283 return -1;
284 }
285
286 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +0200287 if (res == PARSE_TIME_OVER) {
288 memprintf(err, "timer overflow in argument '%s' to 'timeout %s' (maximum value is 2147483647 ms or ~24.8 days)",
289 args[1], name);
290 return -1;
291 }
292 else if (res == PARSE_TIME_UNDER) {
293 memprintf(err, "timer underflow in argument '%s' to 'timeout %s' (minimum non-null value is 1 ms)",
294 args[1], name);
295 return -1;
296 }
297 else if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200298 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100299 return -1;
300 }
301
302 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200303 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
304 name, proxy_type_str(proxy), proxy->id,
305 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100306 retval = 1;
307 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200308 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200309 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100310 retval = 1;
311 }
312
Willy Tarreaufac5b592014-05-22 08:24:46 +0200313 if (*args[2] != 0) {
314 memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]);
315 retval = -1;
316 }
317
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200318 *tv = MS_TO_TICKS(timeout);
Willy Tarreaue219db72007-12-03 01:30:13 +0100319 return retval;
320}
321
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100322/* This function parses a "rate-limit" statement in a proxy section. It returns
323 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200324 * return zero, it will write an error or warning message into a preallocated
325 * buffer returned at <err>. The function must be called with <args> pointing
326 * to the first command line word, with <proxy> pointing to the proxy being
327 * parsed, and <defpx> to the default proxy or NULL.
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100328 */
329static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200330 struct proxy *defpx, const char *file, int line,
331 char **err)
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100332{
333 int retval, cap;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200334 char *res;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100335 unsigned int *tv = NULL;
336 unsigned int *td = NULL;
337 unsigned int val;
338
339 retval = 0;
340
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200341 if (strcmp(args[1], "sessions") == 0) {
Willy Tarreau13a34bd2009-05-10 18:52:49 +0200342 tv = &proxy->fe_sps_lim;
343 td = &defpx->fe_sps_lim;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100344 cap = PR_CAP_FE;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200345 }
346 else {
347 memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100348 return -1;
349 }
350
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200351 if (*args[2] == 0) {
352 memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100353 return -1;
354 }
355
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200356 val = strtoul(args[2], &res, 0);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100357 if (*res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200358 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 +0100359 return -1;
360 }
361
362 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200363 memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability",
364 args[0], args[1], proxy_type_str(proxy), proxy->id,
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100365 (cap & PR_CAP_BE) ? "backend" : "frontend");
366 retval = 1;
367 }
368 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200369 memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100370 retval = 1;
371 }
372
373 *tv = val;
374 return retval;
375}
376
Willy Tarreauc35362a2014-04-25 13:58:37 +0200377/* This function parses a "max-keep-alive-queue" statement in a proxy section.
378 * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it
379 * does not return zero, it will write an error or warning message into a
380 * preallocated buffer returned at <err>. The function must be called with
381 * <args> pointing to the first command line word, with <proxy> pointing to
382 * the proxy being parsed, and <defpx> to the default proxy or NULL.
383 */
384static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy,
385 struct proxy *defpx, const char *file, int line,
386 char **err)
387{
388 int retval;
389 char *res;
390 unsigned int val;
391
392 retval = 0;
393
394 if (*args[1] == 0) {
395 memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]);
396 return -1;
397 }
398
399 val = strtol(args[1], &res, 0);
400 if (*res) {
401 memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
402 return -1;
403 }
404
405 if (!(proxy->cap & PR_CAP_BE)) {
406 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
407 args[0], proxy_type_str(proxy), proxy->id);
408 retval = 1;
409 }
410
411 /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */
412 proxy->max_ka_queue = val + 1;
413 return retval;
414}
415
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200416/* This function parses a "declare" statement in a proxy section. It returns -1
417 * if there is any error, 1 for warning, otherwise 0. If it does not return zero,
418 * it will write an error or warning message into a preallocated buffer returned
419 * at <err>. The function must be called with <args> pointing to the first command
420 * line word, with <proxy> pointing to the proxy being parsed, and <defpx> to the
421 * default proxy or NULL.
422 */
423static int proxy_parse_declare(char **args, int section, struct proxy *curpx,
424 struct proxy *defpx, const char *file, int line,
425 char **err)
426{
427 /* Capture keyword wannot be declared in a default proxy. */
428 if (curpx == defpx) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800429 memprintf(err, "'%s' not available in default section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200430 return -1;
431 }
432
Joseph Herlant59dd2952018-11-15 11:46:55 -0800433 /* Capture keywork is only available in frontend. */
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200434 if (!(curpx->cap & PR_CAP_FE)) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800435 memprintf(err, "'%s' only available in frontend or listen section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200436 return -1;
437 }
438
439 /* Check mandatory second keyword. */
440 if (!args[1] || !*args[1]) {
441 memprintf(err, "'%s' needs a second keyword that specify the type of declaration ('capture')", args[0]);
442 return -1;
443 }
444
Joseph Herlant59dd2952018-11-15 11:46:55 -0800445 /* Actually, declare is only available for declaring capture
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200446 * slot, but in the future it can declare maps or variables.
Joseph Herlant59dd2952018-11-15 11:46:55 -0800447 * So, this section permits to check and switch according with
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200448 * the second keyword.
449 */
450 if (strcmp(args[1], "capture") == 0) {
451 char *error = NULL;
452 long len;
453 struct cap_hdr *hdr;
454
455 /* Check the next keyword. */
456 if (!args[2] || !*args[2] ||
457 (strcmp(args[2], "response") != 0 &&
458 strcmp(args[2], "request") != 0)) {
459 memprintf(err, "'%s %s' requires a direction ('request' or 'response')", args[0], args[1]);
460 return -1;
461 }
462
463 /* Check the 'len' keyword. */
464 if (!args[3] || !*args[3] || strcmp(args[3], "len") != 0) {
465 memprintf(err, "'%s %s' requires a capture length ('len')", args[0], args[1]);
466 return -1;
467 }
468
469 /* Check the length value. */
470 if (!args[4] || !*args[4]) {
471 memprintf(err, "'%s %s': 'len' requires a numeric value that represents the "
472 "capture length",
473 args[0], args[1]);
474 return -1;
475 }
476
477 /* convert the length value. */
478 len = strtol(args[4], &error, 10);
479 if (*error != '\0') {
480 memprintf(err, "'%s %s': cannot parse the length '%s'.",
481 args[0], args[1], args[3]);
482 return -1;
483 }
484
485 /* check length. */
486 if (len <= 0) {
487 memprintf(err, "length must be > 0");
488 return -1;
489 }
490
491 /* register the capture. */
Vincent Bernat02779b62016-04-03 13:48:43 +0200492 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200493 hdr->name = NULL; /* not a header capture */
494 hdr->namelen = 0;
495 hdr->len = len;
496 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
497
498 if (strcmp(args[2], "request") == 0) {
499 hdr->next = curpx->req_cap;
500 hdr->index = curpx->nb_req_cap++;
501 curpx->req_cap = hdr;
502 }
503 if (strcmp(args[2], "response") == 0) {
504 hdr->next = curpx->rsp_cap;
505 hdr->index = curpx->nb_rsp_cap++;
506 curpx->rsp_cap = hdr;
507 }
508 return 0;
509 }
510 else {
511 memprintf(err, "unknown declaration type '%s' (supports 'capture')", args[1]);
512 return -1;
513 }
514}
515
Olivier Houcharda254a372019-04-05 15:30:12 +0200516/* This function parses a "retry-on" statement */
517static int
518proxy_parse_retry_on(char **args, int section, struct proxy *curpx,
519 struct proxy *defpx, const char *file, int line,
520 char **err)
521{
522 int i;
523
524 if (!(*args[1])) {
525 memprintf(err, "'%s' needs at least one keyword to specify when to retry", args[0]);
526 return -1;
527 }
528 if (!(curpx->cap & PR_CAP_BE)) {
529 memprintf(err, "'%s' only available in backend or listen section", args[0]);
530 return -1;
531 }
532 curpx->retry_type = 0;
533 for (i = 1; *(args[i]); i++) {
534 if (!strcmp(args[i], "conn-failure"))
535 curpx->retry_type |= PR_RE_CONN_FAILED;
536 else if (!strcmp(args[i], "empty-response"))
537 curpx->retry_type |= PR_RE_DISCONNECTED;
538 else if (!strcmp(args[i], "response-timeout"))
539 curpx->retry_type |= PR_RE_TIMEOUT;
540 else if (!strcmp(args[i], "404"))
541 curpx->retry_type |= PR_RE_404;
542 else if (!strcmp(args[i], "408"))
543 curpx->retry_type |= PR_RE_408;
544 else if (!strcmp(args[i], "425"))
545 curpx->retry_type |= PR_RE_425;
546 else if (!strcmp(args[i], "500"))
547 curpx->retry_type |= PR_RE_500;
548 else if (!strcmp(args[i], "501"))
549 curpx->retry_type |= PR_RE_501;
550 else if (!strcmp(args[i], "502"))
551 curpx->retry_type |= PR_RE_502;
552 else if (!strcmp(args[i], "503"))
553 curpx->retry_type |= PR_RE_503;
554 else if (!strcmp(args[i], "504"))
555 curpx->retry_type |= PR_RE_504;
Olivier Houchard865d8392019-05-03 22:46:27 +0200556 else if (!strcmp(args[i], "0rtt-rejected"))
557 curpx->retry_type |= PR_RE_EARLY_ERROR;
Olivier Houcharde3249a92019-05-03 23:01:47 +0200558 else if (!strcmp(args[i], "junk-response"))
559 curpx->retry_type |= PR_RE_JUNK_REQUEST;
Olivier Houchardddf0e032019-05-10 18:05:40 +0200560 else if (!(strcmp(args[i], "all-retryable-errors")))
561 curpx->retry_type |= PR_RE_CONN_FAILED | PR_RE_DISCONNECTED |
562 PR_RE_TIMEOUT | PR_RE_500 | PR_RE_502 |
563 PR_RE_503 | PR_RE_504 | PR_RE_EARLY_ERROR |
564 PR_RE_JUNK_REQUEST;
Olivier Houcharda254a372019-04-05 15:30:12 +0200565 else if (!strcmp(args[i], "none")) {
566 if (i != 1 || *args[i + 1]) {
567 memprintf(err, "'%s' 'none' keyworld only usable alone", args[0]);
568 return -1;
569 }
570 } else {
571 memprintf(err, "'%s': unknown keyword '%s'", args[0], args[i]);
572 return -1;
573 }
574
575 }
576
577
578 return 0;
579}
580
Willy Tarreauf79d9502014-03-15 07:22:35 +0100581/* This function inserts proxy <px> into the tree of known proxies. The proxy's
582 * name is used as the storing key so it must already have been initialized.
583 */
584void proxy_store_name(struct proxy *px)
585{
586 px->conf.by_name.key = px->id;
587 ebis_insert(&proxy_by_name, &px->conf.by_name);
588}
589
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200590/* Returns a pointer to the first proxy matching capabilities <cap> and id
591 * <id>. NULL is returned if no match is found. If <table> is non-zero, it
592 * only considers proxies having a table.
Willy Tarreaubc216c42011-08-02 11:25:54 +0200593 */
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200594struct proxy *proxy_find_by_id(int id, int cap, int table)
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200595{
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200596 struct eb32_node *n;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200597
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200598 for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) {
599 struct proxy *px = container_of(n, struct proxy, conf.id);
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100600
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200601 if (px->uuid != id)
602 break;
Alex Williams96532db2009-11-01 21:27:13 -0500603
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200604 if ((px->cap & cap) != cap)
605 continue;
Alex Williams96532db2009-11-01 21:27:13 -0500606
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100607 if (table && (!px->table || !px->table->size))
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200608 continue;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100609
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200610 return px;
611 }
612 return NULL;
613}
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100614
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200615/* Returns a pointer to the first proxy matching either name <name>, or id
616 * <name> if <name> begins with a '#'. NULL is returned if no match is found.
617 * If <table> is non-zero, it only considers proxies having a table.
618 */
619struct proxy *proxy_find_by_name(const char *name, int cap, int table)
620{
621 struct proxy *curproxy;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200622
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200623 if (*name == '#') {
624 curproxy = proxy_find_by_id(atoi(name + 1), cap, table);
625 if (curproxy)
Willy Tarreauc739aa82015-05-26 11:35:41 +0200626 return curproxy;
Alex Williams96532db2009-11-01 21:27:13 -0500627 }
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100628 else {
629 struct ebpt_node *node;
630
631 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
632 curproxy = container_of(node, struct proxy, conf.by_name);
Alex Williams96532db2009-11-01 21:27:13 -0500633
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100634 if (strcmp(curproxy->id, name) != 0)
635 break;
636
637 if ((curproxy->cap & cap) != cap)
638 continue;
639
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100640 if (table && (!curproxy->table || !curproxy->table->size))
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200641 continue;
642
Willy Tarreauc739aa82015-05-26 11:35:41 +0200643 return curproxy;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100644 }
645 }
Willy Tarreauc739aa82015-05-26 11:35:41 +0200646 return NULL;
Alex Williams96532db2009-11-01 21:27:13 -0500647}
648
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200649/* Finds the best match for a proxy with capabilities <cap>, name <name> and id
650 * <id>. At most one of <id> or <name> may be different provided that <cap> is
651 * valid. Either <id> or <name> may be left unspecified (0). The purpose is to
652 * find a proxy based on some information from a previous configuration, across
653 * reloads or during information exchange between peers.
654 *
655 * Names are looked up first if present, then IDs are compared if present. In
656 * case of an inexact match whatever is forced in the configuration has
657 * precedence in the following order :
658 * - 1) forced ID (proves a renaming / change of proxy type)
659 * - 2) proxy name+type (may indicate a move if ID differs)
660 * - 3) automatic ID+type (may indicate a renaming)
661 *
662 * Depending on what is found, we can end up in the following situations :
663 *
664 * name id cap | possible causes
665 * -------------+-----------------
666 * -- -- -- | nothing found
667 * -- -- ok | nothing found
668 * -- ok -- | proxy deleted, ID points to next one
669 * -- ok ok | proxy renamed, or deleted with ID pointing to next one
670 * ok -- -- | proxy deleted, but other half with same name still here (before)
671 * ok -- ok | proxy's ID changed (proxy moved in the config file)
672 * ok ok -- | proxy deleted, but other half with same name still here (after)
673 * ok ok ok | perfect match
674 *
675 * Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits :
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200676 * - PR_FBM_MISMATCH_ID : proxy was found but ID differs
677 * (and ID was not zero)
678 * - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs
679 * (and name was not NULL)
680 * - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with
681 * the same name and/or id
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200682 *
683 * Only a valid proxy is returned. If capabilities do not match, NULL is
684 * returned. The caller can check <diff> to report detailed warnings / errors,
685 * and decide whether or not to use what was found.
686 */
687struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff)
688{
689 struct proxy *byname;
690 struct proxy *byid;
691
692 if (!name && !id)
693 return NULL;
694
695 if (diff)
696 *diff = 0;
697
698 byname = byid = NULL;
699
700 if (name) {
701 byname = proxy_find_by_name(name, cap, 0);
702 if (byname && (!id || byname->uuid == id))
703 return byname;
704 }
705
Joseph Herlant59dd2952018-11-15 11:46:55 -0800706 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200707 * - name not set
708 * - name set but not found
709 * - name found, but ID doesn't match.
710 */
711 if (id) {
712 byid = proxy_find_by_id(id, cap, 0);
713 if (byid) {
714 if (byname) {
715 /* id+type found, name+type found, but not all 3.
716 * ID wins only if forced, otherwise name wins.
717 */
718 if (byid->options & PR_O_FORCED_ID) {
719 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200720 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200721 return byid;
722 }
723 else {
724 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200725 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200726 return byname;
727 }
728 }
729
Joseph Herlant59dd2952018-11-15 11:46:55 -0800730 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200731 * - name not set
732 * - name set but not found
733 */
734 if (name && diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200735 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200736 return byid;
737 }
738
739 /* ID not found */
740 if (byname) {
741 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200742 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200743 return byname;
744 }
745 }
746
Joseph Herlant59dd2952018-11-15 11:46:55 -0800747 /* All remaining possibilities will lead to NULL. If we can report more
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200748 * detailed information to the caller about changed types and/or name,
749 * we'll do it. For example, we could detect that "listen foo" was
750 * split into "frontend foo_ft" and "backend foo_bk" if IDs are forced.
751 * - name not set, ID not found
752 * - name not found, ID not set
753 * - name not found, ID not found
754 */
755 if (!diff)
756 return NULL;
757
758 if (name) {
759 byname = proxy_find_by_name(name, 0, 0);
760 if (byname && (!id || byname->uuid == id))
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200761 *diff |= PR_FBM_MISMATCH_PROXYTYPE;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200762 }
763
764 if (id) {
765 byid = proxy_find_by_id(id, 0, 0);
766 if (byid) {
767 if (!name)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200768 *diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200769 else if (byid->options & PR_O_FORCED_ID)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200770 *diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200771 /* otherwise it's a different proxy that was returned */
772 }
773 }
774 return NULL;
775}
776
Willy Tarreaubaaee002006-06-26 02:48:02 +0200777/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100778 * This function finds a server with matching name within selected proxy.
779 * It also checks if there are more matching servers with
780 * requested name as this often leads into unexpected situations.
781 */
782
783struct server *findserver(const struct proxy *px, const char *name) {
784
785 struct server *cursrv, *target = NULL;
786
787 if (!px)
788 return NULL;
789
790 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
791 if (strcmp(cursrv->id, name))
792 continue;
793
794 if (!target) {
795 target = cursrv;
796 continue;
797 }
798
Christopher Faulet767a84b2017-11-24 16:50:31 +0100799 ha_alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
800 name, px->id);
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100801
802 return NULL;
803 }
804
805 return target;
806}
807
Willy Tarreauff01a212009-03-15 13:46:16 +0100808/* This function checks that the designated proxy has no http directives
809 * enabled. It will output a warning if there are, and will fix some of them.
810 * It returns the number of fatal errors encountered. This should be called
811 * at the end of the configuration parsing if the proxy is not in http mode.
812 * The <file> argument is used to construct the error message.
813 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200814int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100815{
816 if (curproxy->cookie_name != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100817 ha_warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
818 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100819 }
Willy Tarreauff01a212009-03-15 13:46:16 +0100820 if (curproxy->monitor_uri != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100821 ha_warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
822 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100823 }
Willy Tarreauf3e49f92009-10-03 12:21:20 +0200824 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100825 curproxy->lbprm.algo &= ~BE_LB_ALGO;
826 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100827 ha_warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
828 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100829 }
Willy Tarreau17804162009-11-09 21:27:51 +0100830 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
831 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Christopher Faulet767a84b2017-11-24 16:50:31 +0100832 ha_warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
833 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
834 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau17804162009-11-09 21:27:51 +0100835 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200836 if (curproxy->conf.logformat_string == default_http_log_format ||
837 curproxy->conf.logformat_string == clf_http_log_format) {
838 /* Note: we don't change the directive's file:line number */
839 curproxy->conf.logformat_string = default_tcp_log_format;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100840 ha_warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
841 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
842 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau196729e2012-05-31 19:30:26 +0200843 }
844
Willy Tarreauff01a212009-03-15 13:46:16 +0100845 return 0;
846}
847
Willy Tarreau237250c2011-07-29 01:49:03 +0200848/* Perform the most basic initialization of a proxy :
849 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +0200850 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +0200851 */
852void init_new_proxy(struct proxy *p)
853{
854 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100855 p->obj_type = OBJ_TYPE_PROXY;
Patrick Hemmer0355dab2018-05-11 12:52:31 -0400856 p->pendconns = EB_ROOT;
Willy Tarreau237250c2011-07-29 01:49:03 +0200857 LIST_INIT(&p->acl);
858 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200859 LIST_INIT(&p->http_res_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200860 LIST_INIT(&p->redirect_rules);
861 LIST_INIT(&p->mon_fail_cond);
862 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200863 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200864 LIST_INIT(&p->persist_rules);
865 LIST_INIT(&p->sticking_rules);
866 LIST_INIT(&p->storersp_rules);
867 LIST_INIT(&p->tcp_req.inspect_rules);
868 LIST_INIT(&p->tcp_rep.inspect_rules);
869 LIST_INIT(&p->tcp_req.l4_rules);
Willy Tarreau620408f2016-10-21 16:37:51 +0200870 LIST_INIT(&p->tcp_req.l5_rules);
Olivier Houchard859dc802019-08-08 15:47:21 +0200871 MT_LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +0200872 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +0100873 LIST_INIT(&p->logformat);
Dragan Dosen0b85ece2015-09-25 19:17:44 +0200874 LIST_INIT(&p->logformat_sd);
William Lallemanda73203e2012-03-12 12:48:57 +0100875 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200876 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +0200877 LIST_INIT(&p->conf.listeners);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200878 LIST_INIT(&p->conf.args.list);
Baptiste Assmann5ecb77f2013-10-06 23:24:13 +0200879 LIST_INIT(&p->tcpcheck_rules);
Christopher Faulet443ea1a2016-02-04 13:40:26 +0100880 LIST_INIT(&p->filter_configs);
Willy Tarreau237250c2011-07-29 01:49:03 +0200881
882 /* Timeouts are defined as -1 */
883 proxy_reset_timeouts(p);
884 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +0200885
886 /* initial uuid is unassigned (-1) */
887 p->uuid = -1;
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200888
Olivier Houcharda254a372019-04-05 15:30:12 +0200889 /* Default to only allow L4 retries */
890 p->retry_type = PR_RE_CONN_FAILED;
891
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100892 HA_SPIN_INIT(&p->lock);
Willy Tarreau237250c2011-07-29 01:49:03 +0200893}
894
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100895/*
Willy Tarreau2ff76222007-04-09 19:29:56 +0200896 * This function creates all proxy sockets. It should be done very early,
897 * typically before privileges are dropped. The sockets will be registered
898 * but not added to any fd_set, in order not to loose them across the fork().
Willy Tarreau562515c2011-07-25 08:11:52 +0200899 * The proxies also start in READY state because they all have their listeners
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200900 * bound.
Willy Tarreau2ff76222007-04-09 19:29:56 +0200901 *
902 * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
903 * Retryable errors will only be printed if <verbose> is not zero.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200904 */
905int start_proxies(int verbose)
906{
907 struct proxy *curproxy;
908 struct listener *listener;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100909 int lerr, err = ERR_NONE;
910 int pxerr;
911 char msg[100];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200912
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100913 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200914 if (curproxy->state != PR_STNEW)
915 continue; /* already initialized */
916
917 pxerr = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200918 list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
Willy Tarreaue6b98942007-10-29 01:09:36 +0100919 if (listener->state != LI_ASSIGNED)
920 continue; /* already started */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200921
Emeric Bruncf20bf12010-10-22 16:06:11 +0200922 lerr = listener->proto->bind(listener, msg, sizeof(msg));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200923
Willy Tarreaue6b98942007-10-29 01:09:36 +0100924 /* errors are reported if <verbose> is set or if they are fatal */
925 if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
926 if (lerr & ERR_ALERT)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100927 ha_alert("Starting %s %s: %s\n",
928 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaue6b98942007-10-29 01:09:36 +0100929 else if (lerr & ERR_WARN)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100930 ha_warning("Starting %s %s: %s\n",
931 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200932 }
933
Willy Tarreaue6b98942007-10-29 01:09:36 +0100934 err |= lerr;
935 if (lerr & (ERR_ABORT | ERR_FATAL)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200936 pxerr |= 1;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100937 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200938 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100939 else if (lerr & ERR_CODE) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200940 pxerr |= 1;
941 continue;
942 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200943 }
944
945 if (!pxerr) {
Willy Tarreau562515c2011-07-25 08:11:52 +0200946 curproxy->state = PR_STREADY;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200947 send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
948 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100949
950 if (err & ERR_ABORT)
951 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200952 }
953
954 return err;
955}
956
957
958/*
Willy Tarreau918ff602011-07-25 16:33:49 +0200959 * This is the proxy management task. It enables proxies when there are enough
Willy Tarreau87b09662015-04-03 00:22:06 +0200960 * free streams, or stops them when the table is full. It is designed to be
Willy Tarreau918ff602011-07-25 16:33:49 +0200961 * called as a task which is woken up upon stopping or when rate limiting must
962 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200963 */
Olivier Houchard9f6af332018-05-25 14:04:04 +0200964struct task *manage_proxy(struct task *t, void *context, unsigned short state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200965{
Olivier Houchard9f6af332018-05-25 14:04:04 +0200966 struct proxy *p = context;
Willy Tarreau918ff602011-07-25 16:33:49 +0200967 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +0100968 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200969
Willy Tarreau918ff602011-07-25 16:33:49 +0200970 /* We should periodically try to enable listeners waiting for a
971 * global resource here.
972 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200973
Willy Tarreau918ff602011-07-25 16:33:49 +0200974 /* first, let's check if we need to stop the proxy */
975 if (unlikely(stopping && p->state != PR_STSTOPPED)) {
976 int t;
977 t = tick_remain(now_ms, p->stop_time);
978 if (t == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100979 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
980 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau918ff602011-07-25 16:33:49 +0200981 send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
982 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
983 stop_proxy(p);
984 /* try to free more memory */
Willy Tarreaubafbe012017-11-24 17:34:44 +0100985 pool_gc(NULL);
Willy Tarreau918ff602011-07-25 16:33:49 +0200986 }
987 else {
988 next = tick_first(next, p->stop_time);
989 }
990 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200991
Willy Tarreau3a925c12013-09-04 17:54:01 +0200992 /* If the proxy holds a stick table, we need to purge all unused
993 * entries. These are all the ones in the table with ref_cnt == 0
994 * and all the ones in the pool used to allocate new entries. Any
Willy Tarreau87b09662015-04-03 00:22:06 +0200995 * entry attached to an existing stream waiting for a store will
Willy Tarreau3a925c12013-09-04 17:54:01 +0200996 * be in neither list. Any entry being dumped will have ref_cnt > 0.
997 * However we protect tables that are being synced to peers.
998 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100999 if (unlikely(stopping && p->state == PR_STSTOPPED && p->table && p->table->current)) {
1000 if (!p->table->syncing) {
1001 stktable_trash_oldest(p->table, p->table->current);
Willy Tarreaubafbe012017-11-24 17:34:44 +01001002 pool_gc(NULL);
Willy Tarreau3a925c12013-09-04 17:54:01 +02001003 }
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001004 if (p->table->current) {
Willy Tarreau3a925c12013-09-04 17:54:01 +02001005 /* some entries still remain, let's recheck in one second */
1006 next = tick_first(next, tick_add(now_ms, 1000));
1007 }
1008 }
1009
Willy Tarreau918ff602011-07-25 16:33:49 +02001010 /* the rest below is just for frontends */
1011 if (!(p->cap & PR_CAP_FE))
1012 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001013
Willy Tarreau918ff602011-07-25 16:33:49 +02001014 /* check the various reasons we may find to block the frontend */
1015 if (unlikely(p->feconn >= p->maxconn)) {
1016 if (p->state == PR_STREADY)
1017 p->state = PR_STFULL;
1018 goto out;
1019 }
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001020
Willy Tarreau918ff602011-07-25 16:33:49 +02001021 /* OK we have no reason to block, so let's unblock if we were blocking */
1022 if (p->state == PR_STFULL)
1023 p->state = PR_STREADY;
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001024
Willy Tarreau918ff602011-07-25 16:33:49 +02001025 if (p->fe_sps_lim &&
1026 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
1027 /* we're blocking because a limit was reached on the number of
1028 * requests/s on the frontend. We want to re-check ASAP, which
1029 * means in 1 ms before estimated expiration date, because the
1030 * timer will have settled down.
1031 */
1032 next = tick_first(next, tick_add(now_ms, wait));
1033 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001034 }
Willy Tarreau918ff602011-07-25 16:33:49 +02001035
1036 /* The proxy is not limited so we can re-enable any waiting listener */
Willy Tarreau241797a2019-12-10 14:10:52 +01001037 dequeue_proxy_listeners(p);
Willy Tarreau918ff602011-07-25 16:33:49 +02001038 out:
1039 t->expire = next;
1040 task_queue(t);
1041 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001042}
1043
1044
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001045static int proxy_parse_hard_stop_after(char **args, int section_type, struct proxy *curpx,
1046 struct proxy *defpx, const char *file, int line,
1047 char **err)
1048{
1049 const char *res;
1050
1051 if (!*args[1]) {
1052 memprintf(err, "'%s' expects <time> as argument.\n", args[0]);
1053 return -1;
1054 }
1055 res = parse_time_err(args[1], &global.hard_stop_after, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02001056 if (res == PARSE_TIME_OVER) {
1057 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
1058 args[1], args[0]);
1059 return -1;
1060 }
1061 else if (res == PARSE_TIME_UNDER) {
1062 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
1063 args[1], args[0]);
1064 return -1;
1065 }
1066 else if (res) {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001067 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
1068 return -1;
1069 }
1070 return 0;
1071}
1072
Olivier Houchard9f6af332018-05-25 14:04:04 +02001073struct task *hard_stop(struct task *t, void *context, unsigned short state)
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001074{
1075 struct proxy *p;
1076 struct stream *s;
1077
1078 if (killed) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001079 ha_warning("Some tasks resisted to hard-stop, exiting now.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001080 send_log(NULL, LOG_WARNING, "Some tasks resisted to hard-stop, exiting now.\n");
Willy Tarreau7067b3a2019-06-02 11:11:29 +02001081 killed = 2;
1082 t->expire = TICK_ETERNITY;
1083 return t;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001084 }
1085
Christopher Faulet767a84b2017-11-24 16:50:31 +01001086 ha_warning("soft-stop running for too long, performing a hard-stop.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001087 send_log(NULL, LOG_WARNING, "soft-stop running for too long, performing a hard-stop.\n");
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001088 p = proxies_list;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001089 while (p) {
1090 if ((p->cap & PR_CAP_FE) && (p->feconn > 0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001091 ha_warning("Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1092 p->id, p->feconn);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001093 send_log(p, LOG_WARNING, "Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1094 p->id, p->feconn);
1095 }
1096 p = p->next;
1097 }
1098 list_for_each_entry(s, &streams, list) {
1099 stream_shutdown(s, SF_ERR_KILLED);
1100 }
1101
1102 killed = 1;
1103 t->expire = tick_add(now_ms, MS_TO_TICKS(1000));
1104 return t;
1105}
1106
Willy Tarreaubaaee002006-06-26 02:48:02 +02001107/*
1108 * this function disables health-check servers so that the process will quickly be ignored
1109 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
1110 * time will not be used since it would already not listen anymore to the socket.
1111 */
1112void soft_stop(void)
1113{
1114 struct proxy *p;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001115 struct peers *prs;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001116 struct task *task;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001117
1118 stopping = 1;
William Dauchy3894d972019-12-28 15:36:02 +01001119 /* disable busy polling to avoid cpu eating for the new process */
1120 global.tune.options &= ~GTUNE_BUSY_POLLING;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001121 if (tick_isset(global.hard_stop_after)) {
Emeric Brunc60def82017-09-27 14:59:38 +02001122 task = task_new(MAX_THREADS_MASK);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001123 if (task) {
1124 task->process = hard_stop;
1125 task_schedule(task, tick_add(now_ms, global.hard_stop_after));
1126 }
1127 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001128 ha_alert("out of memory trying to allocate the hard-stop task.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001129 }
1130 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001131 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001132 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001133 while (p) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001134 /* Zombie proxy, let's close the file descriptors */
1135 if (p->state == PR_STSTOPPED &&
1136 !LIST_ISEMPTY(&p->conf.listeners) &&
1137 LIST_ELEM(p->conf.listeners.n,
Willy Tarreau67878d72019-12-10 07:11:35 +01001138 struct listener *, by_fe)->state > LI_ASSIGNED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001139 struct listener *l;
1140 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreau67878d72019-12-10 07:11:35 +01001141 if (l->state > LI_ASSIGNED)
Olivier Houchard1fc05162017-04-06 01:05:05 +02001142 close(l->fd);
1143 l->state = LI_INIT;
1144 }
1145 }
1146
Willy Tarreaubaaee002006-06-26 02:48:02 +02001147 if (p->state != PR_STSTOPPED) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001148 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 +02001149 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 +02001150 p->stop_time = tick_add(now_ms, p->grace);
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001151
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001152 /* Note: do not wake up stopped proxies' task nor their tables'
1153 * tasks as these ones might point to already released entries.
1154 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001155 if (p->table && p->table->size && p->table->sync_task)
1156 task_wakeup(p->table->sync_task, TASK_WOKEN_MSG);
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001157
1158 if (p->task)
1159 task_wakeup(p->task, TASK_WOKEN_MSG);
1160 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001161 p = p->next;
1162 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001163
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001164 prs = cfg_peers;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001165 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001166 if (prs->peers_fe)
1167 stop_proxy(prs->peers_fe);
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001168 prs = prs->next;
1169 }
Willy Tarreaud0807c32010-08-27 18:26:11 +02001170 /* signal zero is used to broadcast the "stopping" event */
1171 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001172}
1173
1174
Willy Tarreaube58c382011-07-24 18:28:10 +02001175/* Temporarily disables listening on all of the proxy's listeners. Upon
1176 * success, the proxy enters the PR_PAUSED state. If disabling at least one
1177 * listener returns an error, then the proxy state is set to PR_STERROR
Willy Tarreauce8fe252011-09-07 19:14:57 +02001178 * because we don't know how to resume from this. The function returns 0
1179 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001180 */
Willy Tarreauce8fe252011-09-07 19:14:57 +02001181int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001182{
1183 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +02001184
1185 if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
1186 p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
1187 return 1;
1188
Christopher Faulet767a84b2017-11-24 16:50:31 +01001189 ha_warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001190 send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
1191
Willy Tarreau4348fad2012-09-20 16:48:07 +02001192 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreaube58c382011-07-24 18:28:10 +02001193 if (!pause_listener(l))
Willy Tarreaubaaee002006-06-26 02:48:02 +02001194 p->state = PR_STERROR;
1195 }
Willy Tarreauce8fe252011-09-07 19:14:57 +02001196
1197 if (p->state == PR_STERROR) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001198 ha_warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001199 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
1200 return 0;
1201 }
1202
1203 p->state = PR_STPAUSED;
1204 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +02001205}
1206
Olivier Houchard1fc05162017-04-06 01:05:05 +02001207/* This function makes the proxy unusable, but keeps the listening sockets
1208 * opened, so that if any process requests them, we are able to serve them.
1209 * This should only be called early, before we started accepting requests.
1210 */
1211void zombify_proxy(struct proxy *p)
1212{
1213 struct listener *l;
1214 struct listener *first_to_listen = NULL;
1215
1216 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1217 enum li_state oldstate = l->state;
1218
1219 unbind_listener_no_close(l);
1220 if (l->state >= LI_ASSIGNED) {
1221 delete_listener(l);
Olivier Houchard1fc05162017-04-06 01:05:05 +02001222 }
1223 /*
1224 * Pretend we're still up and running so that the fd
1225 * will be sent if asked.
1226 */
1227 l->state = LI_ZOMBIE;
1228 if (!first_to_listen && oldstate >= LI_LISTEN)
1229 first_to_listen = l;
1230 }
1231 /* Quick hack : at stop time, to know we have to close the sockets
1232 * despite the proxy being marked as stopped, make the first listener
1233 * of the listener list an active one, so that we don't have to
1234 * parse the whole list to be sure.
1235 */
1236 if (first_to_listen && LIST_ELEM(p->conf.listeners.n,
1237 struct listener *, by_fe) != first_to_listen) {
1238 LIST_DEL(&l->by_fe);
1239 LIST_ADD(&p->conf.listeners, &l->by_fe);
1240 }
1241
1242 p->state = PR_STSTOPPED;
1243}
Willy Tarreauda250db2008-10-12 12:07:48 +02001244
1245/*
1246 * This function completely stops a proxy and releases its listeners. It has
1247 * to be called when going down in order to release the ports so that another
1248 * process may bind to them. It must also be called on disabled proxies at the
William Lallemandc59f9882018-11-16 16:57:21 +01001249 * end of start-up. If all listeners are closed, the proxy is set to the
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001250 * PR_STSTOPPED state. The function takes the proxy's lock so it's safe to
1251 * call from multiple places.
Willy Tarreauda250db2008-10-12 12:07:48 +02001252 */
1253void stop_proxy(struct proxy *p)
1254{
1255 struct listener *l;
William Lallemandc59f9882018-11-16 16:57:21 +01001256 int nostop = 0;
Willy Tarreauda250db2008-10-12 12:07:48 +02001257
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001258 HA_SPIN_LOCK(PROXY_LOCK, &p->lock);
1259
Willy Tarreau4348fad2012-09-20 16:48:07 +02001260 list_for_each_entry(l, &p->conf.listeners, by_fe) {
William Lallemandc59f9882018-11-16 16:57:21 +01001261 if (l->options & LI_O_NOSTOP) {
1262 HA_ATOMIC_ADD(&unstoppable_jobs, 1);
1263 nostop = 1;
1264 continue;
1265 }
William Lallemandf7f488d2019-10-18 21:16:39 +02001266 /* The master should not close an inherited FD */
1267 if (master && (l->options & LI_O_INHERITED))
1268 unbind_listener_no_close(l);
1269 else
1270 unbind_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001271 if (l->state >= LI_ASSIGNED) {
1272 delete_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001273 }
1274 }
William Lallemandc59f9882018-11-16 16:57:21 +01001275 if (!nostop)
1276 p->state = PR_STSTOPPED;
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001277
1278 HA_SPIN_UNLOCK(PROXY_LOCK, &p->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001279}
1280
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001281/* This function resumes listening on the specified proxy. It scans all of its
1282 * listeners and tries to enable them all. If any of them fails, the proxy is
1283 * put back to the paused state. It returns 1 upon success, or zero if an error
1284 * is encountered.
1285 */
1286int resume_proxy(struct proxy *p)
1287{
1288 struct listener *l;
1289 int fail;
1290
1291 if (p->state != PR_STPAUSED)
1292 return 1;
1293
Christopher Faulet767a84b2017-11-24 16:50:31 +01001294 ha_warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001295 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
1296
1297 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +02001298 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001299 if (!resume_listener(l)) {
1300 int port;
1301
1302 port = get_host_port(&l->addr);
1303 if (port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001304 ha_warning("Port %d busy while trying to enable %s %s.\n",
1305 port, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001306 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
1307 port, proxy_cap_str(p->cap), p->id);
1308 }
1309 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001310 ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
1311 l->luid, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001312 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
1313 l->luid, proxy_cap_str(p->cap), p->id);
1314 }
1315
1316 /* Another port might have been enabled. Let's stop everything. */
1317 fail = 1;
1318 break;
1319 }
1320 }
1321
1322 p->state = PR_STREADY;
1323 if (fail) {
1324 pause_proxy(p);
1325 return 0;
1326 }
1327 return 1;
1328}
1329
Willy Tarreaubaaee002006-06-26 02:48:02 +02001330/*
1331 * This function temporarily disables listening so that another new instance
1332 * can start listening. It is designed to be called upon reception of a
1333 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
1334 * the proxy, or a SIGTTIN can be sent to listen again.
1335 */
1336void pause_proxies(void)
1337{
1338 int err;
1339 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001340 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001341
1342 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001343 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001344 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001345 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +02001346 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001347 p = p->next;
1348 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001349
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001350 prs = cfg_peers;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001351 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001352 if (prs->peers_fe)
1353 err |= !pause_proxy(prs->peers_fe);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001354 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001355 }
1356
Willy Tarreaubaaee002006-06-26 02:48:02 +02001357 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001358 ha_warning("Some proxies refused to pause, performing soft stop now.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02001359 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
1360 soft_stop();
1361 }
1362}
1363
1364
1365/*
1366 * This function reactivates listening. This can be used after a call to
1367 * sig_pause(), for example when a new instance has failed starting up.
1368 * It is designed to be called upon reception of a SIGTTIN.
1369 */
Willy Tarreaube58c382011-07-24 18:28:10 +02001370void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001371{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001372 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001373 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001374 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001375
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001376 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001377 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001378 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001379 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001380 err |= !resume_proxy(p);
1381 p = p->next;
1382 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001383
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001384 prs = cfg_peers;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001385 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001386 if (prs->peers_fe)
1387 err |= !resume_proxy(prs->peers_fe);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001388 prs = prs->next;
1389 }
Willy Tarreaube58c382011-07-24 18:28:10 +02001390
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001391 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001392 ha_warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001393 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 +02001394 }
1395}
1396
Willy Tarreau87b09662015-04-03 00:22:06 +02001397/* Set current stream's backend to <be>. Nothing is done if the
1398 * stream already had a backend assigned, which is indicated by
Willy Tarreaue7dff022015-04-03 01:14:29 +02001399 * s->flags & SF_BE_ASSIGNED.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001400 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001401 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001402 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001403int stream_set_backend(struct stream *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001404{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001405 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001406 return 1;
Christopher Faulet41179042016-06-21 11:54:52 +02001407
1408 if (flt_set_stream_backend(s, be) < 0)
1409 return 0;
1410
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001411 s->be = be;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001412 HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
1413 HA_ATOMIC_ADD(&be->beconn, 1));
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001414 proxy_inc_be_ctr(be);
1415
Willy Tarreau87b09662015-04-03 00:22:06 +02001416 /* assign new parameters to the stream from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +02001417 s->si[1].flags &= ~SI_FL_INDEP_STR;
1418 if (be->options2 & PR_O2_INDEPSTR)
1419 s->si[1].flags |= SI_FL_INDEP_STR;
1420
Hongbo Longe39683c2017-03-10 18:41:51 +01001421 if (tick_isset(be->timeout.serverfin))
1422 s->si[1].hcto = be->timeout.serverfin;
1423
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001424 /* We want to enable the backend-specific analysers except those which
1425 * were already run as part of the frontend/listener. Note that it would
1426 * be more reliable to store the list of analysers that have been run,
1427 * but what we do here is OK for now.
1428 */
Christopher Faulet70e2f272017-01-09 16:33:19 +01001429 s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001430
Willy Tarreau51aecc72009-07-12 09:47:04 +02001431 /* If the target backend requires HTTP processing, we have to allocate
Christopher Faulet711ed6a2019-07-16 14:16:10 +02001432 * the HTTP transaction if we did not have one.
Willy Tarreau51aecc72009-07-12 09:47:04 +02001433 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001434 if (unlikely(!s->txn && be->http_needed)) {
1435 if (unlikely(!http_alloc_txn(s)))
Willy Tarreau51aecc72009-07-12 09:47:04 +02001436 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +02001437
1438 /* and now initialize the HTTP transaction state */
1439 http_init_txn(s);
Willy Tarreau51aecc72009-07-12 09:47:04 +02001440 }
1441
Christopher Faulet309c6412015-12-02 09:57:32 +01001442 /* Be sure to filter request headers if the backend is an HTTP proxy and
1443 * if there are filters attached to the stream. */
1444 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +01001445 s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +01001446
Willy Tarreaueee5b512015-04-03 23:46:31 +02001447 if (s->txn) {
Christopher Fauletbbe68542019-04-08 10:53:51 +02001448 /* If we chain a TCP frontend to an HTX backend, we must upgrade
1449 * the client mux */
Christopher Faulet60d29b32019-07-15 15:00:25 +02001450 if (!IS_HTX_STRM(s) && be->mode == PR_MODE_HTTP) {
Christopher Fauletbbe68542019-04-08 10:53:51 +02001451 struct connection *conn = objt_conn(strm_sess(s)->origin);
1452 struct conn_stream *cs = objt_cs(s->si[0].end);
1453
1454 if (conn && cs) {
1455 si_rx_endp_more(&s->si[0]);
Olivier Houchard2ab3dad2019-07-03 13:08:18 +02001456 /* Make sure we're unsubscribed, the the new
1457 * mux will probably want to subscribe to
1458 * the underlying XPRT
1459 */
1460 if (s->si[0].wait_event.events)
1461 conn->mux->unsubscribe(cs, s->si[0].wait_event.events,
1462 &s->si[0].wait_event);
Christopher Fauletc985f6c2019-07-15 11:42:52 +02001463 if (conn_upgrade_mux_fe(conn, cs, &s->req.buf, ist(""), PROTO_MODE_HTTP) == -1)
Christopher Fauletbbe68542019-04-08 10:53:51 +02001464 return 0;
Olivier Houchard4c18f942019-07-31 18:05:26 +02001465 if (!strcmp(conn->mux->name, "H2")) {
1466 /* For HTTP/2, destroy the conn_stream,
1467 * disable logging, and pretend that we
1468 * failed, to that the stream is
1469 * silently destroyed. The new mux
1470 * will create new streams.
1471 */
Olivier Houchard59dd06d2019-08-09 18:01:15 +02001472 cs_free(cs);
Olivier Houchard4c18f942019-07-31 18:05:26 +02001473 si_detach_endpoint(&s->si[0]);
1474 s->logs.logwait = 0;
1475 s->logs.level = 0;
1476 s->flags |= SF_IGNORE;
1477 return 0;
1478 }
Olivier Houchard71b20c22019-08-09 17:50:05 +02001479 s->flags |= SF_HTX;
Christopher Fauletbbe68542019-04-08 10:53:51 +02001480 }
1481 }
Christopher Fauleteec7f8a2019-12-20 15:59:20 +01001482 else if (IS_HTX_STRM(s) && be->mode != PR_MODE_HTTP) {
1483 /* If a TCP backend is assgiend to an HTX stream, return
1484 * an error. It may happens for a new stream on a
1485 * previously upgraded connnections. */
1486 if (!(s->flags & SF_ERR_MASK))
1487 s->flags |= SF_ERR_INTERNAL;
1488 return 0;
1489 }
Christopher Fauletbbe68542019-04-08 10:53:51 +02001490
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001491 /* we may request to parse a request body */
Christopher Faulet711ed6a2019-07-16 14:16:10 +02001492 if (be->options & PR_O_WREQ_BODY)
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001493 s->req.analysers |= AN_REQ_HTTP_BODY;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001494 }
1495
1496 s->flags |= SF_BE_ASSIGNED;
Willy Tarreau96e31212011-05-30 18:10:30 +02001497 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001498 s->req.flags |= CF_NEVER_WAIT;
1499 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02001500 }
1501
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001502 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001503}
1504
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001505/* Capture a bad request or response and archive it in the proxy's structure.
1506 * It is relatively protocol-agnostic so it requires that a number of elements
1507 * are passed :
1508 * - <proxy> is the proxy where the error was detected and where the snapshot
1509 * needs to be stored
Joseph Herlant59dd2952018-11-15 11:46:55 -08001510 * - <is_back> indicates that the error happened when receiving the response
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001511 * - <other_end> is a pointer to the proxy on the other side when known
1512 * - <target> is the target of the connection, usually a server or a proxy
1513 * - <sess> is the session which experienced the error
1514 * - <ctx> may be NULL or should contain any info relevant to the protocol
1515 * - <buf> is the buffer containing the offending data
1516 * - <buf_ofs> is the position of this buffer's input data in the input
1517 * stream, starting at zero. It may be passed as zero if unknown.
1518 * - <buf_out> is the portion of <buf->data> which was already forwarded and
1519 * which precedes the buffer's input. The buffer's input starts at
1520 * buf->head + buf_out.
1521 * - <err_pos> is the pointer to the faulty byte in the buffer's input.
1522 * - <show> is the callback to use to display <ctx>. It may be NULL.
1523 */
1524void proxy_capture_error(struct proxy *proxy, int is_back,
1525 struct proxy *other_end, enum obj_type *target,
1526 const struct session *sess,
1527 const struct buffer *buf, long buf_ofs,
1528 unsigned int buf_out, unsigned int err_pos,
1529 const union error_snapshot_ctx *ctx,
1530 void (*show)(struct buffer *, const struct error_snapshot *))
1531{
1532 struct error_snapshot *es;
1533 unsigned int buf_len;
1534 int len1, len2;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001535 unsigned int ev_id;
1536
1537 ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
1538
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001539 buf_len = b_data(buf) - buf_out;
1540
1541 es = malloc(sizeof(*es) + buf_len);
Willy Tarreauc55015e2018-09-07 19:02:32 +02001542 if (!es)
1543 return;
1544
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001545 es->buf_len = buf_len;
1546 es->ev_id = ev_id;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001547
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001548 len1 = b_size(buf) - buf_len;
1549 if (len1 > buf_len)
1550 len1 = buf_len;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001551
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001552 if (len1) {
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001553 memcpy(es->buf, b_peek(buf, buf_out), len1);
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001554 len2 = buf_len - len1;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001555 if (len2)
1556 memcpy(es->buf + len1, b_orig(buf), len2);
1557 }
1558
1559 es->buf_err = err_pos;
1560 es->when = date; // user-visible date
1561 es->srv = objt_server(target);
1562 es->oe = other_end;
Willy Tarreau026efc72019-07-17 15:20:02 +02001563 if (objt_conn(sess->origin) && conn_get_src(__objt_conn(sess->origin)))
1564 es->src = *__objt_conn(sess->origin)->src;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001565 else
1566 memset(&es->src, 0, sizeof(es->src));
1567
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001568 es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
1569 es->buf_out = buf_out;
1570 es->buf_ofs = buf_ofs;
1571
1572 /* be sure to indicate the offset of the first IN byte */
1573 if (es->buf_ofs >= es->buf_len)
1574 es->buf_ofs -= es->buf_len;
1575 else
1576 es->buf_ofs = 0;
1577
1578 /* protocol-specific part now */
1579 if (ctx)
1580 es->ctx = *ctx;
1581 else
1582 memset(&es->ctx, 0, sizeof(es->ctx));
1583 es->show = show;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001584
1585 /* note: we still lock since we have to be certain that nobody is
1586 * dumping the output while we free.
1587 */
1588 HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
1589 if (is_back) {
1590 es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
1591 } else {
1592 es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
1593 }
1594 free(es);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001595 HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
1596}
1597
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001598/* Configure all proxies which lack a maxconn setting to use the global one by
1599 * default. This avoids the common mistake consisting in setting maxconn only
1600 * in the global section and discovering the hard way that it doesn't propagate
1601 * through the frontends. These values are also propagated through the various
1602 * targetted backends, whose fullconn is finally calculated if not yet set.
1603 */
1604void proxy_adjust_all_maxconn()
1605{
1606 struct proxy *curproxy;
1607 struct switching_rule *swrule1, *swrule2;
1608
1609 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1610 if (curproxy->state == PR_STSTOPPED)
1611 continue;
1612
1613 if (!(curproxy->cap & PR_CAP_FE))
1614 continue;
1615
1616 if (!curproxy->maxconn)
1617 curproxy->maxconn = global.maxconn;
1618
1619 /* update the target backend's fullconn count : default_backend */
1620 if (curproxy->defbe.be)
1621 curproxy->defbe.be->tot_fe_maxconn += curproxy->maxconn;
1622 else if ((curproxy->cap & PR_CAP_LISTEN) == PR_CAP_LISTEN)
1623 curproxy->tot_fe_maxconn += curproxy->maxconn;
1624
1625 list_for_each_entry(swrule1, &curproxy->switching_rules, list) {
1626 /* For each target of switching rules, we update their
1627 * tot_fe_maxconn, except if a previous rule points to
1628 * the same backend or to the default backend.
1629 */
1630 if (swrule1->be.backend != curproxy->defbe.be) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001631 /* note: swrule1->be.backend isn't a backend if the rule
1632 * is dynamic, it's an expression instead, so it must not
1633 * be dereferenced as a backend before being certain it is.
1634 */
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001635 list_for_each_entry(swrule2, &curproxy->switching_rules, list) {
1636 if (swrule2 == swrule1) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001637 if (!swrule1->dynamic)
1638 swrule1->be.backend->tot_fe_maxconn += curproxy->maxconn;
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001639 break;
1640 }
1641 else if (!swrule2->dynamic && swrule2->be.backend == swrule1->be.backend) {
1642 /* there are multiple refs of this backend */
1643 break;
1644 }
1645 }
1646 }
1647 }
1648 }
1649
1650 /* automatically compute fullconn if not set. We must not do it in the
1651 * loop above because cross-references are not yet fully resolved.
1652 */
1653 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1654 if (curproxy->state == PR_STSTOPPED)
1655 continue;
1656
1657 /* If <fullconn> is not set, let's set it to 10% of the sum of
1658 * the possible incoming frontend's maxconns.
1659 */
1660 if (!curproxy->fullconn && (curproxy->cap & PR_CAP_BE)) {
1661 /* we have the sum of the maxconns in <total>. We only
1662 * keep 10% of that sum to set the default fullconn, with
1663 * a hard minimum of 1 (to avoid a divide by zero).
1664 */
1665 curproxy->fullconn = (curproxy->tot_fe_maxconn + 9) / 10;
1666 if (!curproxy->fullconn)
1667 curproxy->fullconn = 1;
1668 }
1669 }
1670}
1671
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001672/* Config keywords below */
1673
Willy Tarreaudc13c112013-06-21 23:16:39 +02001674static struct cfg_kw_list cfg_kws = {ILH, {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001675 { CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001676 { CFG_LISTEN, "timeout", proxy_parse_timeout },
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +02001677 { CFG_LISTEN, "clitimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1678 { CFG_LISTEN, "contimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1679 { 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 +01001680 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreauc35362a2014-04-25 13:58:37 +02001681 { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +02001682 { CFG_LISTEN, "declare", proxy_parse_declare },
Olivier Houcharda254a372019-04-05 15:30:12 +02001683 { CFG_LISTEN, "retry-on", proxy_parse_retry_on },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001684 { 0, NULL, NULL },
1685}};
1686
Willy Tarreau0108d902018-11-25 19:14:37 +01001687INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
1688
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001689/* Expects to find a frontend named <arg> and returns it, otherwise displays various
1690 * adequate error messages and returns NULL. This function is designed to be used by
1691 * functions requiring a frontend on the CLI.
1692 */
1693struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
1694{
1695 struct proxy *px;
1696
1697 if (!*arg) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001698 cli_err(appctx, "A frontend name is expected.\n");
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001699 return NULL;
1700 }
1701
1702 px = proxy_fe_by_name(arg);
1703 if (!px) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001704 cli_err(appctx, "No such frontend.\n");
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001705 return NULL;
1706 }
1707 return px;
1708}
1709
Olivier Houchard614f8d72017-03-14 20:08:46 +01001710/* Expects to find a backend named <arg> and returns it, otherwise displays various
1711 * adequate error messages and returns NULL. This function is designed to be used by
1712 * functions requiring a frontend on the CLI.
1713 */
1714struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
1715{
1716 struct proxy *px;
1717
1718 if (!*arg) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001719 cli_err(appctx, "A backend name is expected.\n");
Olivier Houchard614f8d72017-03-14 20:08:46 +01001720 return NULL;
1721 }
1722
1723 px = proxy_be_by_name(arg);
1724 if (!px) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001725 cli_err(appctx, "No such backend.\n");
Olivier Houchard614f8d72017-03-14 20:08:46 +01001726 return NULL;
1727 }
1728 return px;
1729}
1730
1731
William Lallemanda6c5f332016-11-19 02:25:36 +01001732/* parse a "show servers" CLI line, returns 0 if it wants to start the dump or
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001733 * 1 if it stops immediately. If an argument is specified, it will set the proxy
1734 * pointer into cli.p0 and its ID into cli.i0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001735 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001736static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemanda6c5f332016-11-19 02:25:36 +01001737{
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001738 struct proxy *px;
William Lallemanda6c5f332016-11-19 02:25:36 +01001739
1740 /* check if a backend name has been provided */
1741 if (*args[3]) {
1742 /* read server state from local file */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001743 px = proxy_be_by_name(args[3]);
William Lallemanda6c5f332016-11-19 02:25:36 +01001744
Willy Tarreau9d008692019-08-09 11:21:01 +02001745 if (!px)
1746 return cli_err(appctx, "Can't find backend.\n");
1747
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001748 appctx->ctx.cli.p0 = px;
1749 appctx->ctx.cli.i0 = px->uuid;
William Lallemanda6c5f332016-11-19 02:25:36 +01001750 }
1751 return 0;
1752}
1753
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001754/* dumps server state information into <buf> for all the servers found in backend cli.p0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001755 * These information are all the parameters which may change during HAProxy runtime.
1756 * By default, we only export to the last known server state file format.
1757 * These information can be used at next startup to recover same level of server state.
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001758 * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
1759 * pointer from cli.p1.
William Lallemanda6c5f332016-11-19 02:25:36 +01001760 */
Willy Tarreau83061a82018-07-13 11:56:34 +02001761static int dump_servers_state(struct stream_interface *si, struct buffer *buf)
William Lallemanda6c5f332016-11-19 02:25:36 +01001762{
1763 struct appctx *appctx = __objt_appctx(si->end);
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001764 struct proxy *px = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001765 struct server *srv;
1766 char srv_addr[INET6_ADDRSTRLEN + 1];
1767 time_t srv_time_since_last_change;
1768 int bk_f_forced_id, srv_f_forced_id;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001769 char *srvrecord;
William Lallemanda6c5f332016-11-19 02:25:36 +01001770
William Lallemanda6c5f332016-11-19 02:25:36 +01001771 /* we don't want to report any state if the backend is not enabled on this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001772 if (!(proc_mask(px->bind_proc) & pid_bit))
William Lallemanda6c5f332016-11-19 02:25:36 +01001773 return 1;
1774
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001775 if (!appctx->ctx.cli.p1)
1776 appctx->ctx.cli.p1 = px->srv;
William Lallemanda6c5f332016-11-19 02:25:36 +01001777
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001778 for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
1779 srv = appctx->ctx.cli.p1;
William Lallemanda6c5f332016-11-19 02:25:36 +01001780 srv_addr[0] = '\0';
1781
1782 switch (srv->addr.ss_family) {
1783 case AF_INET:
1784 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
1785 srv_addr, INET_ADDRSTRLEN + 1);
1786 break;
1787 case AF_INET6:
1788 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
1789 srv_addr, INET6_ADDRSTRLEN + 1);
1790 break;
Daniel Corbett9215ffa2018-05-19 19:43:24 -04001791 default:
1792 memcpy(srv_addr, "-\0", 2);
1793 break;
William Lallemanda6c5f332016-11-19 02:25:36 +01001794 }
1795 srv_time_since_last_change = now.tv_sec - srv->last_change;
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001796 bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001797 srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
1798
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001799 srvrecord = NULL;
1800 if (srv->srvrq && srv->srvrq->name)
1801 srvrecord = srv->srvrq->name;
1802
William Lallemanda6c5f332016-11-19 02:25:36 +01001803 chunk_appendf(buf,
1804 "%d %s "
1805 "%d %s %s "
1806 "%d %d %d %d %ld "
1807 "%d %d %d %d %d "
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001808 "%d %d %s %u %s"
William Lallemanda6c5f332016-11-19 02:25:36 +01001809 "\n",
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001810 px->uuid, px->id,
William Lallemanda6c5f332016-11-19 02:25:36 +01001811 srv->puid, srv->id, srv_addr,
Emeric Brun52a91d32017-08-31 14:41:55 +02001812 srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
William Lallemanda6c5f332016-11-19 02:25:36 +01001813 srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001814 bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
1815 srvrecord ? srvrecord : "-");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001816 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001817 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001818 return 0;
1819 }
1820 }
1821 return 1;
1822}
1823
1824/* Parses backend list or simply use backend name provided by the user to return
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001825 * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
1826 * non-null.
William Lallemanda6c5f332016-11-19 02:25:36 +01001827 */
1828static int cli_io_handler_servers_state(struct appctx *appctx)
1829{
1830 struct stream_interface *si = appctx->owner;
William Lallemanda6c5f332016-11-19 02:25:36 +01001831 struct proxy *curproxy;
1832
1833 chunk_reset(&trash);
1834
1835 if (appctx->st2 == STAT_ST_INIT) {
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001836 if (!appctx->ctx.cli.p0)
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001837 appctx->ctx.cli.p0 = proxies_list;
William Lallemanda6c5f332016-11-19 02:25:36 +01001838 appctx->st2 = STAT_ST_HEAD;
1839 }
1840
1841 if (appctx->st2 == STAT_ST_HEAD) {
1842 chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001843 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001844 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001845 return 0;
1846 }
1847 appctx->st2 = STAT_ST_INFO;
1848 }
1849
1850 /* STAT_ST_INFO */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001851 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1852 curproxy = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001853 /* servers are only in backends */
1854 if (curproxy->cap & PR_CAP_BE) {
1855 if (!dump_servers_state(si, &trash))
1856 return 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001857 }
1858 /* only the selected proxy is dumped */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001859 if (appctx->ctx.cli.i0)
William Lallemanda6c5f332016-11-19 02:25:36 +01001860 break;
1861 }
1862
1863 return 1;
1864}
1865
Willy Tarreau608ea592016-12-16 18:01:15 +01001866/* Parses backend list and simply report backend names. It keeps the proxy
1867 * pointer in cli.p0.
1868 */
William Lallemand933efcd2016-11-22 12:34:16 +01001869static int cli_io_handler_show_backend(struct appctx *appctx)
1870{
William Lallemand933efcd2016-11-22 12:34:16 +01001871 struct stream_interface *si = appctx->owner;
1872 struct proxy *curproxy;
1873
1874 chunk_reset(&trash);
1875
Willy Tarreau608ea592016-12-16 18:01:15 +01001876 if (!appctx->ctx.cli.p0) {
William Lallemand933efcd2016-11-22 12:34:16 +01001877 chunk_printf(&trash, "# name\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001878 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001879 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001880 return 0;
1881 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001882 appctx->ctx.cli.p0 = proxies_list;
William Lallemand933efcd2016-11-22 12:34:16 +01001883 }
1884
Willy Tarreau608ea592016-12-16 18:01:15 +01001885 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1886 curproxy = appctx->ctx.cli.p0;
William Lallemand933efcd2016-11-22 12:34:16 +01001887
1888 /* looking for backends only */
1889 if (!(curproxy->cap & PR_CAP_BE))
1890 continue;
1891
1892 /* we don't want to list a backend which is bound to this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001893 if (!(proc_mask(curproxy->bind_proc) & pid_bit))
William Lallemand933efcd2016-11-22 12:34:16 +01001894 continue;
1895
1896 chunk_appendf(&trash, "%s\n", curproxy->id);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001897 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001898 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001899 return 0;
1900 }
1901 }
1902
1903 return 1;
1904}
William Lallemanda6c5f332016-11-19 02:25:36 +01001905
Willy Tarreaua275a372018-08-21 14:50:44 +02001906/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
1907 *
1908 * Grabs the proxy lock and each server's lock.
1909 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001910static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001911{
1912 struct proxy *px;
1913 struct server *s;
1914
1915 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1916 return 1;
1917
1918 px = cli_find_backend(appctx, args[3]);
1919 if (!px)
1920 return 1;
1921
Willy Tarreau5e83d992019-07-30 11:59:34 +02001922 /* Note: this lock is to make sure this doesn't change while another
1923 * thread is in srv_set_dyncookie().
1924 */
Willy Tarreaua275a372018-08-21 14:50:44 +02001925 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001926 px->ck_opts |= PR_CK_DYNAMIC;
Willy Tarreau5e83d992019-07-30 11:59:34 +02001927 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001928
Willy Tarreaua275a372018-08-21 14:50:44 +02001929 for (s = px->srv; s != NULL; s = s->next) {
1930 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001931 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001932 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1933 }
1934
Olivier Houchard614f8d72017-03-14 20:08:46 +01001935 return 1;
1936}
1937
Willy Tarreaua275a372018-08-21 14:50:44 +02001938/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
1939 *
1940 * Grabs the proxy lock and each server's lock.
1941 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001942static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001943{
1944 struct proxy *px;
1945 struct server *s;
1946
1947 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1948 return 1;
1949
1950 px = cli_find_backend(appctx, args[3]);
1951 if (!px)
1952 return 1;
1953
Willy Tarreau5e83d992019-07-30 11:59:34 +02001954 /* Note: this lock is to make sure this doesn't change while another
1955 * thread is in srv_set_dyncookie().
1956 */
Willy Tarreaua275a372018-08-21 14:50:44 +02001957 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001958 px->ck_opts &= ~PR_CK_DYNAMIC;
Willy Tarreau5e83d992019-07-30 11:59:34 +02001959 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001960
1961 for (s = px->srv; s != NULL; s = s->next) {
Willy Tarreaua275a372018-08-21 14:50:44 +02001962 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001963 if (!(s->flags & SRV_F_COOKIESET)) {
1964 free(s->cookie);
1965 s->cookie = NULL;
1966 }
Willy Tarreaua275a372018-08-21 14:50:44 +02001967 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001968 }
1969
1970 return 1;
1971}
1972
Willy Tarreaua275a372018-08-21 14:50:44 +02001973/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
1974 *
1975 * Grabs the proxy lock and each server's lock.
1976 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001977static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001978{
1979 struct proxy *px;
1980 struct server *s;
1981 char *newkey;
1982
1983 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1984 return 1;
1985
1986 px = cli_find_backend(appctx, args[3]);
1987 if (!px)
1988 return 1;
1989
Willy Tarreau9d008692019-08-09 11:21:01 +02001990 if (!*args[4])
1991 return cli_err(appctx, "String value expected.\n");
Olivier Houchard614f8d72017-03-14 20:08:46 +01001992
1993 newkey = strdup(args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02001994 if (!newkey)
1995 return cli_err(appctx, "Failed to allocate memory.\n");
Willy Tarreaua275a372018-08-21 14:50:44 +02001996
Willy Tarreau5e83d992019-07-30 11:59:34 +02001997 /* Note: this lock is to make sure this doesn't change while another
1998 * thread is in srv_set_dyncookie().
1999 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002000 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002001 free(px->dyncookie_key);
2002 px->dyncookie_key = newkey;
Willy Tarreau5e83d992019-07-30 11:59:34 +02002003 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002004
Willy Tarreaua275a372018-08-21 14:50:44 +02002005 for (s = px->srv; s != NULL; s = s->next) {
2006 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002007 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02002008 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
2009 }
2010
Olivier Houchard614f8d72017-03-14 20:08:46 +01002011 return 1;
2012}
2013
Willy Tarreaua275a372018-08-21 14:50:44 +02002014/* Parses the "set maxconn frontend" directive, it always returns 1.
2015 *
2016 * Grabs the proxy lock.
2017 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002018static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002019{
2020 struct proxy *px;
2021 struct listener *l;
2022 int v;
2023
2024 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2025 return 1;
2026
2027 px = cli_find_frontend(appctx, args[3]);
2028 if (!px)
2029 return 1;
2030
Willy Tarreau9d008692019-08-09 11:21:01 +02002031 if (!*args[4])
2032 return cli_err(appctx, "Integer value expected.\n");
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002033
2034 v = atoi(args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02002035 if (v < 0)
2036 return cli_err(appctx, "Value out of range.\n");
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002037
2038 /* OK, the value is fine, so we assign it to the proxy and to all of
2039 * its listeners. The blocked ones will be dequeued.
2040 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002041 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2042
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002043 px->maxconn = v;
2044 list_for_each_entry(l, &px->conf.listeners, by_fe) {
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002045 if (l->state == LI_FULL)
2046 resume_listener(l);
2047 }
2048
Willy Tarreau241797a2019-12-10 14:10:52 +01002049 if (px->maxconn > px->feconn)
2050 dequeue_proxy_listeners(px);
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002051
Willy Tarreaua275a372018-08-21 14:50:44 +02002052 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2053
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002054 return 1;
2055}
2056
Willy Tarreaua275a372018-08-21 14:50:44 +02002057/* Parses the "shutdown frontend" directive, it always returns 1.
2058 *
2059 * Grabs the proxy lock.
2060 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002061static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002062{
2063 struct proxy *px;
2064
2065 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2066 return 1;
2067
2068 px = cli_find_frontend(appctx, args[2]);
2069 if (!px)
2070 return 1;
2071
Willy Tarreau9d008692019-08-09 11:21:01 +02002072 if (px->state == PR_STSTOPPED)
2073 return cli_msg(appctx, LOG_NOTICE, "Frontend was already shut down.\n");
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002074
Christopher Faulet767a84b2017-11-24 16:50:31 +01002075 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2076 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002077 send_log(px, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2078 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreaua275a372018-08-21 14:50:44 +02002079
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002080 stop_proxy(px);
2081 return 1;
2082}
2083
Willy Tarreaua275a372018-08-21 14:50:44 +02002084/* Parses the "disable frontend" directive, it always returns 1.
2085 *
2086 * Grabs the proxy lock.
2087 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002088static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002089{
2090 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002091 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002092
2093 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2094 return 1;
2095
2096 px = cli_find_frontend(appctx, args[2]);
2097 if (!px)
2098 return 1;
2099
Willy Tarreau9d008692019-08-09 11:21:01 +02002100 if (px->state == PR_STSTOPPED)
2101 return cli_msg(appctx, LOG_NOTICE, "Frontend was previously shut down, cannot disable.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002102
Willy Tarreau9d008692019-08-09 11:21:01 +02002103 if (px->state == PR_STPAUSED)
2104 return cli_msg(appctx, LOG_NOTICE, "Frontend is already disabled.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002105
Willy Tarreaua275a372018-08-21 14:50:44 +02002106 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2107 ret = pause_proxy(px);
2108 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2109
Willy Tarreau9d008692019-08-09 11:21:01 +02002110 if (!ret)
2111 return cli_err(appctx, "Failed to pause frontend, check logs for precise cause.\n");
2112
Willy Tarreau15b9e682016-11-24 11:55:28 +01002113 return 1;
2114}
2115
Willy Tarreaua275a372018-08-21 14:50:44 +02002116/* Parses the "enable frontend" directive, it always returns 1.
2117 *
2118 * Grabs the proxy lock.
2119 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002120static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002121{
2122 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002123 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002124
2125 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2126 return 1;
2127
2128 px = cli_find_frontend(appctx, args[2]);
2129 if (!px)
2130 return 1;
2131
Willy Tarreau9d008692019-08-09 11:21:01 +02002132 if (px->state == PR_STSTOPPED)
2133 return cli_err(appctx, "Frontend was previously shut down, cannot enable.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002134
Willy Tarreau9d008692019-08-09 11:21:01 +02002135 if (px->state != PR_STPAUSED)
2136 return cli_msg(appctx, LOG_NOTICE, "Frontend is already enabled.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002137
Willy Tarreaua275a372018-08-21 14:50:44 +02002138 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2139 ret = resume_proxy(px);
2140 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2141
Willy Tarreau9d008692019-08-09 11:21:01 +02002142 if (!ret)
2143 return cli_err(appctx, "Failed to resume frontend, check logs for precise cause (port conflict?).\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002144 return 1;
2145}
2146
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002147/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
2148 * now.
2149 */
2150static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
2151{
2152 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2153 return 1;
2154
2155 if (*args[2]) {
2156 struct proxy *px;
2157
2158 px = proxy_find_by_name(args[2], 0, 0);
2159 if (px)
2160 appctx->ctx.errors.iid = px->uuid;
2161 else
2162 appctx->ctx.errors.iid = atoi(args[2]);
2163
Willy Tarreau9d008692019-08-09 11:21:01 +02002164 if (!appctx->ctx.errors.iid)
2165 return cli_err(appctx, "No such proxy.\n");
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002166 }
2167 else
2168 appctx->ctx.errors.iid = -1; // dump all proxies
2169
2170 appctx->ctx.errors.flag = 0;
2171 if (strcmp(args[3], "request") == 0)
2172 appctx->ctx.errors.flag |= 4; // ignore response
2173 else if (strcmp(args[3], "response") == 0)
2174 appctx->ctx.errors.flag |= 2; // ignore request
2175 appctx->ctx.errors.px = NULL;
2176 return 0;
2177}
2178
2179/* This function dumps all captured errors onto the stream interface's
2180 * read buffer. It returns 0 if the output buffer is full and it needs
2181 * to be called again, otherwise non-zero.
2182 */
2183static int cli_io_handler_show_errors(struct appctx *appctx)
2184{
2185 struct stream_interface *si = appctx->owner;
2186 extern const char *monthname[12];
2187
2188 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
2189 return 1;
2190
2191 chunk_reset(&trash);
2192
2193 if (!appctx->ctx.errors.px) {
2194 /* the function had not been called yet, let's prepare the
2195 * buffer for a response.
2196 */
2197 struct tm tm;
2198
2199 get_localtime(date.tv_sec, &tm);
2200 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
2201 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2202 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
2203 error_snapshot_id);
2204
Willy Tarreau36b27362018-09-07 19:55:44 +02002205 if (ci_putchk(si_ic(si), &trash) == -1)
2206 goto cant_send;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002207
2208 appctx->ctx.errors.px = proxies_list;
2209 appctx->ctx.errors.bol = 0;
2210 appctx->ctx.errors.ptr = -1;
2211 }
2212
2213 /* we have two inner loops here, one for the proxy, the other one for
2214 * the buffer.
2215 */
2216 while (appctx->ctx.errors.px) {
2217 struct error_snapshot *es;
2218
Willy Tarreau36b27362018-09-07 19:55:44 +02002219 HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2220
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002221 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002222 es = appctx->ctx.errors.px->invalid_req;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002223 if (appctx->ctx.errors.flag & 2) // skip req
2224 goto next;
2225 }
2226 else {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002227 es = appctx->ctx.errors.px->invalid_rep;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002228 if (appctx->ctx.errors.flag & 4) // skip resp
2229 goto next;
2230 }
2231
Willy Tarreauc55015e2018-09-07 19:02:32 +02002232 if (!es)
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002233 goto next;
2234
2235 if (appctx->ctx.errors.iid >= 0 &&
2236 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
2237 es->oe->uuid != appctx->ctx.errors.iid)
2238 goto next;
2239
2240 if (appctx->ctx.errors.ptr < 0) {
2241 /* just print headers now */
2242
2243 char pn[INET6_ADDRSTRLEN];
2244 struct tm tm;
2245 int port;
2246
2247 get_localtime(es->when.tv_sec, &tm);
2248 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
2249 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2250 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
2251
2252 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
2253 case AF_INET:
2254 case AF_INET6:
2255 port = get_host_port(&es->src);
2256 break;
2257 default:
2258 port = 0;
2259 }
2260
2261 switch (appctx->ctx.errors.flag & 1) {
2262 case 0:
2263 chunk_appendf(&trash,
2264 " frontend %s (#%d): invalid request\n"
2265 " backend %s (#%d)",
2266 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2267 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
2268 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
2269 break;
2270 case 1:
2271 chunk_appendf(&trash,
2272 " backend %s (#%d): invalid response\n"
2273 " frontend %s (#%d)",
2274 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2275 es->oe->id, es->oe->uuid);
2276 break;
2277 }
2278
2279 chunk_appendf(&trash,
2280 ", server %s (#%d), event #%u, src %s:%d\n"
2281 " buffer starts at %llu (including %u out), %u free,\n"
2282 " len %u, wraps at %u, error at position %u\n",
2283 es->srv ? es->srv->id : "<NONE>",
2284 es->srv ? es->srv->puid : -1,
2285 es->ev_id, pn, port,
2286 es->buf_ofs, es->buf_out,
2287 global.tune.bufsize - es->buf_out - es->buf_len,
2288 es->buf_len, es->buf_wrap, es->buf_err);
2289
2290 if (es->show)
2291 es->show(&trash, es);
2292
2293 chunk_appendf(&trash, " \n");
2294
Willy Tarreau36b27362018-09-07 19:55:44 +02002295 if (ci_putchk(si_ic(si), &trash) == -1)
2296 goto cant_send_unlock;
2297
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002298 appctx->ctx.errors.ptr = 0;
2299 appctx->ctx.errors.ev_id = es->ev_id;
2300 }
2301
2302 if (appctx->ctx.errors.ev_id != es->ev_id) {
2303 /* the snapshot changed while we were dumping it */
2304 chunk_appendf(&trash,
2305 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau36b27362018-09-07 19:55:44 +02002306 if (ci_putchk(si_ic(si), &trash) == -1)
2307 goto cant_send_unlock;
2308
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002309 goto next;
2310 }
2311
2312 /* OK, ptr >= 0, so we have to dump the current line */
Willy Tarreau4bc7d902018-09-07 20:07:17 +02002313 while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002314 int newptr;
2315 int newline;
2316
2317 newline = appctx->ctx.errors.bol;
2318 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
2319 if (newptr == appctx->ctx.errors.ptr)
Willy Tarreau36b27362018-09-07 19:55:44 +02002320 goto cant_send_unlock;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002321
Willy Tarreau36b27362018-09-07 19:55:44 +02002322 if (ci_putchk(si_ic(si), &trash) == -1)
2323 goto cant_send_unlock;
2324
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002325 appctx->ctx.errors.ptr = newptr;
2326 appctx->ctx.errors.bol = newline;
2327 };
2328 next:
Willy Tarreau36b27362018-09-07 19:55:44 +02002329 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002330 appctx->ctx.errors.bol = 0;
2331 appctx->ctx.errors.ptr = -1;
2332 appctx->ctx.errors.flag ^= 1;
2333 if (!(appctx->ctx.errors.flag & 1))
2334 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
2335 }
2336
2337 /* dump complete */
2338 return 1;
Willy Tarreau36b27362018-09-07 19:55:44 +02002339
2340 cant_send_unlock:
2341 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2342 cant_send:
Willy Tarreaudb398432018-11-15 11:08:52 +01002343 si_rx_room_blk(si);
Willy Tarreau36b27362018-09-07 19:55:44 +02002344 return 0;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002345}
2346
William Lallemanda6c5f332016-11-19 02:25:36 +01002347/* register cli keywords */
2348static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau15b9e682016-11-24 11:55:28 +01002349 { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
2350 { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002351 { { "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 +01002352 { { "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 +01002353 { { "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 +01002354 { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
Olivier Houchard614f8d72017-03-14 20:08:46 +01002355 { { "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 },
2356 { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
2357 { { "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 +02002358 { { "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 +01002359 {{},}
2360}};
2361
Willy Tarreau0108d902018-11-25 19:14:37 +01002362INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002363
2364/*
2365 * Local variables:
2366 * c-indent-level: 8
2367 * c-basic-offset: 8
2368 * End:
2369 */