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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * Proxy variables and functions.
3 *
Willy Tarreau3a7d2072009-03-05 23:48:25 +01004 * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <fcntl.h>
14#include <unistd.h>
Willy Tarreauc8f24f82007-11-30 18:38:35 +010015#include <string.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020016#include <sys/types.h>
17#include <sys/socket.h>
18#include <sys/stat.h>
19
Willy Tarreau2dd0d472006-06-29 17:53:05 +020020#include <common/defaults.h>
Willy Tarreau9de1bbd2008-07-09 20:34:27 +020021#include <common/cfgparse.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020022#include <common/compat.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020023#include <common/config.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010024#include <common/errors.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010025#include <common/initcall.h>
Willy Tarreau4d2d0982007-05-14 00:39:29 +020026#include <common/memory.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020027#include <common/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020028
Willy Tarreaucfd837f2014-03-15 07:43:51 +010029#include <eb32tree.h>
30#include <ebistree.h>
31
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +020032#include <types/capture.h>
Willy Tarreau960f2cb2016-11-24 12:02:29 +010033#include <types/cli.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020034#include <types/global.h>
Willy Tarreau3fdb3662012-11-12 00:42:33 +010035#include <types/obj_type.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020036#include <types/peers.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010037#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020038
William Lallemanda6c5f332016-11-19 02:25:36 +010039#include <proto/applet.h>
40#include <proto/cli.h>
Alexandre Cassen87ea5482007-10-11 20:48:58 +020041#include <proto/backend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020042#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020043#include <proto/filters.h>
Willy Tarreau51aecc72009-07-12 09:47:04 +020044#include <proto/hdr_idx.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020045#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020046#include <proto/log.h>
Willy Tarreaue6b98942007-10-29 01:09:36 +010047#include <proto/proto_tcp.h>
Willy Tarreau39e4f622010-05-31 17:01:36 +020048#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020049#include <proto/proxy.h>
Olivier Houchard614f8d72017-03-14 20:08:46 +010050#include <proto/server.h>
Willy Tarreaud0807c32010-08-27 18:26:11 +020051#include <proto/signal.h>
Willy Tarreaufb0afa72015-04-03 14:46:27 +020052#include <proto/stream.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010053#include <proto/stream_interface.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020054#include <proto/task.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020055
56
Willy Tarreau918ff602011-07-25 16:33:49 +020057int listeners; /* # of proxy listeners, set by cfgparse */
Olivier Houchardfbc74e82017-11-24 16:54:05 +010058struct proxy *proxies_list = NULL; /* list of all existing proxies */
Willy Tarreau53fb4ae2009-10-04 23:04:08 +020059struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
Willy Tarreauf79d9502014-03-15 07:22:35 +010060struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */
Willy Tarreau10479e42010-12-12 14:00:34 +010061unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
Willy Tarreaubaaee002006-06-26 02:48:02 +020062
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010063/* proxy->options */
64const struct cfg_opt cfg_opts[] =
65{
66 { "abortonclose", PR_O_ABRT_CLOSE, PR_CAP_BE, 0, 0 },
67 { "allbackups", PR_O_USE_ALL_BK, PR_CAP_BE, 0, 0 },
68 { "checkcache", PR_O_CHK_CACHE, PR_CAP_BE, 0, PR_MODE_HTTP },
69 { "clitcpka", PR_O_TCP_CLI_KA, PR_CAP_FE, 0, 0 },
70 { "contstats", PR_O_CONTSTATS, PR_CAP_FE, 0, 0 },
71 { "dontlognull", PR_O_NULLNOLOG, PR_CAP_FE, 0, 0 },
72 { "http_proxy", PR_O_HTTP_PROXY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
73 { "http-buffer-request", PR_O_WREQ_BODY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
74 { "http-ignore-probes", PR_O_IGNORE_PRB, PR_CAP_FE, 0, PR_MODE_HTTP },
75 { "prefer-last-server", PR_O_PREF_LAST, PR_CAP_BE, 0, PR_MODE_HTTP },
76 { "logasap", PR_O_LOGASAP, PR_CAP_FE, 0, 0 },
77 { "nolinger", PR_O_TCP_NOLING, PR_CAP_FE | PR_CAP_BE, 0, 0 },
78 { "persist", PR_O_PERSIST, PR_CAP_BE, 0, 0 },
79 { "srvtcpka", PR_O_TCP_SRV_KA, PR_CAP_BE, 0, 0 },
Willy Tarreaue5733232019-05-22 19:24:06 +020080#ifdef USE_TPROXY
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010081 { "transparent", PR_O_TRANSP, PR_CAP_BE, 0, 0 },
82#else
83 { "transparent", 0, 0, 0, 0 },
84#endif
85
86 { NULL, 0, 0, 0, 0 }
87};
88
89/* proxy->options2 */
90const struct cfg_opt cfg_opts2[] =
91{
Willy Tarreaue5733232019-05-22 19:24:06 +020092#ifdef USE_LINUX_SPLICE
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010093 { "splice-request", PR_O2_SPLIC_REQ, PR_CAP_FE|PR_CAP_BE, 0, 0 },
94 { "splice-response", PR_O2_SPLIC_RTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
95 { "splice-auto", PR_O2_SPLIC_AUT, PR_CAP_FE|PR_CAP_BE, 0, 0 },
96#else
97 { "splice-request", 0, 0, 0, 0 },
98 { "splice-response", 0, 0, 0, 0 },
99 { "splice-auto", 0, 0, 0, 0 },
100#endif
101 { "accept-invalid-http-request", PR_O2_REQBUG_OK, PR_CAP_FE, 0, PR_MODE_HTTP },
102 { "accept-invalid-http-response", PR_O2_RSPBUG_OK, PR_CAP_BE, 0, PR_MODE_HTTP },
103 { "dontlog-normal", PR_O2_NOLOGNORM, PR_CAP_FE, 0, 0 },
104 { "log-separate-errors", PR_O2_LOGERRORS, PR_CAP_FE, 0, 0 },
105 { "log-health-checks", PR_O2_LOGHCHKS, PR_CAP_BE, 0, 0 },
106 { "socket-stats", PR_O2_SOCKSTAT, PR_CAP_FE, 0, 0 },
107 { "tcp-smart-accept", PR_O2_SMARTACC, PR_CAP_FE, 0, 0 },
108 { "tcp-smart-connect", PR_O2_SMARTCON, PR_CAP_BE, 0, 0 },
109 { "independant-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
110 { "independent-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
111 { "http-use-proxy-header", PR_O2_USE_PXHDR, PR_CAP_FE, 0, PR_MODE_HTTP },
112 { "http-pretend-keepalive", PR_O2_FAKE_KA, PR_CAP_BE, 0, PR_MODE_HTTP },
113 { "http-no-delay", PR_O2_NODELAY, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Fauleteb709802019-04-11 22:04:08 +0200114 { "http-use-htx", PR_O2_USE_HTX, PR_CAP_FE|PR_CAP_BE, 0, 0 },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100115 { NULL, 0, 0, 0 }
116};
117
Willy Tarreau977b8e42006-12-29 14:19:17 +0100118/*
Willy Tarreau816eb542007-11-04 07:04:43 +0100119 * This function returns a string containing a name describing capabilities to
120 * report comprehensible error messages. Specifically, it will return the words
Christopher Faulet898566e2016-10-26 11:06:28 +0200121 * "frontend", "backend" when appropriate, or "proxy" for all other
Willy Tarreau816eb542007-11-04 07:04:43 +0100122 * cases including the proxies declared in "listen" mode.
Willy Tarreau977b8e42006-12-29 14:19:17 +0100123 */
Willy Tarreau816eb542007-11-04 07:04:43 +0100124const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +0100125{
Willy Tarreau816eb542007-11-04 07:04:43 +0100126 if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
127 if (cap & PR_CAP_FE)
128 return "frontend";
129 else if (cap & PR_CAP_BE)
130 return "backend";
Willy Tarreau816eb542007-11-04 07:04:43 +0100131 }
132 return "proxy";
Willy Tarreau977b8e42006-12-29 14:19:17 +0100133}
134
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100135/*
136 * This function returns a string containing the mode of the proxy in a format
137 * suitable for error messages.
138 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100139const char *proxy_mode_str(int mode) {
140
141 if (mode == PR_MODE_TCP)
142 return "tcp";
143 else if (mode == PR_MODE_HTTP)
144 return "http";
145 else if (mode == PR_MODE_HEALTH)
146 return "health";
William Lallemandcf62f7e2018-10-26 14:47:40 +0200147 else if (mode == PR_MODE_CLI)
148 return "cli";
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100149 else
150 return "unknown";
151}
152
Willy Tarreauf3950172009-10-10 18:35:51 +0200153/*
154 * This function scans the list of backends and servers to retrieve the first
155 * backend and the first server with the given names, and sets them in both
156 * parameters. It returns zero if either is not found, or non-zero and sets
157 * the ones it did not found to NULL. If a NULL pointer is passed for the
158 * backend, only the pointer to the server will be updated.
159 */
160int get_backend_server(const char *bk_name, const char *sv_name,
161 struct proxy **bk, struct server **sv)
162{
163 struct proxy *p;
164 struct server *s;
Willy Tarreau7ecc4202014-03-15 07:57:11 +0100165 int sid;
Willy Tarreauf3950172009-10-10 18:35:51 +0200166
167 *sv = NULL;
168
Willy Tarreau050536d2012-10-04 08:47:34 +0200169 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200170 if (*sv_name == '#')
171 sid = atoi(sv_name + 1);
172
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200173 p = proxy_be_by_name(bk_name);
Willy Tarreauf3950172009-10-10 18:35:51 +0200174 if (bk)
175 *bk = p;
176 if (!p)
177 return 0;
178
179 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100180 if ((sid >= 0 && s->puid == sid) ||
181 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200182 break;
183 *sv = s;
184 if (!s)
185 return 0;
186 return 1;
187}
188
Willy Tarreaue219db72007-12-03 01:30:13 +0100189/* This function parses a "timeout" statement in a proxy section. It returns
190 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200191 * return zero, it will write an error or warning message into a preallocated
192 * buffer returned at <err>. The trailing is not be written. The function must
193 * be called with <args> pointing to the first command line word, with <proxy>
194 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
195 * As a special case for compatibility with older configs, it also accepts
196 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100197 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200198static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200199 struct proxy *defpx, const char *file, int line,
200 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100201{
202 unsigned timeout;
203 int retval, cap;
204 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200205 int *tv = NULL;
206 int *td = NULL;
Willy Tarreaued446492014-04-28 22:56:38 +0200207 int warn = 0;
Willy Tarreaue219db72007-12-03 01:30:13 +0100208
209 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200210
211 /* simply skip "timeout" but remain compatible with old form */
212 if (strcmp(args[0], "timeout") == 0)
213 args++;
214
Willy Tarreaue219db72007-12-03 01:30:13 +0100215 name = args[0];
Willy Tarreaued446492014-04-28 22:56:38 +0200216 if (!strcmp(args[0], "client") || (!strcmp(args[0], "clitimeout") && (warn = WARN_CLITO_DEPRECATED))) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100217 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100218 tv = &proxy->timeout.client;
219 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100220 cap = PR_CAP_FE;
221 } else if (!strcmp(args[0], "tarpit")) {
222 tv = &proxy->timeout.tarpit;
223 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100224 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100225 } else if (!strcmp(args[0], "http-keep-alive")) {
226 tv = &proxy->timeout.httpka;
227 td = &defpx->timeout.httpka;
228 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100229 } else if (!strcmp(args[0], "http-request")) {
230 tv = &proxy->timeout.httpreq;
231 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200232 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaued446492014-04-28 22:56:38 +0200233 } else if (!strcmp(args[0], "server") || (!strcmp(args[0], "srvtimeout") && (warn = WARN_SRVTO_DEPRECATED))) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100234 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100235 tv = &proxy->timeout.server;
236 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100237 cap = PR_CAP_BE;
Willy Tarreaued446492014-04-28 22:56:38 +0200238 } else if (!strcmp(args[0], "connect") || (!strcmp(args[0], "contimeout") && (warn = WARN_CONTO_DEPRECATED))) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100239 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100240 tv = &proxy->timeout.connect;
241 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100242 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100243 } else if (!strcmp(args[0], "check")) {
244 tv = &proxy->timeout.check;
245 td = &defpx->timeout.check;
246 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100247 } else if (!strcmp(args[0], "queue")) {
248 tv = &proxy->timeout.queue;
249 td = &defpx->timeout.queue;
250 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200251 } else if (!strcmp(args[0], "tunnel")) {
252 tv = &proxy->timeout.tunnel;
253 td = &defpx->timeout.tunnel;
254 cap = PR_CAP_BE;
Willy Tarreau05cdd962014-05-10 14:30:07 +0200255 } else if (!strcmp(args[0], "client-fin")) {
256 tv = &proxy->timeout.clientfin;
257 td = &defpx->timeout.clientfin;
258 cap = PR_CAP_FE;
259 } else if (!strcmp(args[0], "server-fin")) {
260 tv = &proxy->timeout.serverfin;
261 td = &defpx->timeout.serverfin;
262 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100263 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200264 memprintf(err,
265 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreau05cdd962014-05-10 14:30:07 +0200266 "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', "
267 "'client-fin' and 'server-fin' (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200268 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100269 return -1;
270 }
271
272 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200273 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100274 return -1;
275 }
276
277 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
278 if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200279 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100280 return -1;
281 }
282
283 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200284 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
285 name, proxy_type_str(proxy), proxy->id,
286 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100287 retval = 1;
288 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200289 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200290 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100291 retval = 1;
292 }
Willy Tarreaued446492014-04-28 22:56:38 +0200293 else if (warn) {
294 if (!already_warned(warn)) {
295 memprintf(err, "the '%s' directive is now deprecated in favor of 'timeout %s', and will not be supported in future versions.",
296 args[0], name);
297 retval = 1;
298 }
299 }
Willy Tarreaue219db72007-12-03 01:30:13 +0100300
Willy Tarreaufac5b592014-05-22 08:24:46 +0200301 if (*args[2] != 0) {
302 memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]);
303 retval = -1;
304 }
305
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200306 *tv = MS_TO_TICKS(timeout);
Willy Tarreaue219db72007-12-03 01:30:13 +0100307 return retval;
308}
309
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100310/* This function parses a "rate-limit" statement in a proxy section. It returns
311 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200312 * return zero, it will write an error or warning message into a preallocated
313 * buffer returned at <err>. The function must be called with <args> pointing
314 * to the first command line word, with <proxy> pointing to the proxy being
315 * parsed, and <defpx> to the default proxy or NULL.
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100316 */
317static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200318 struct proxy *defpx, const char *file, int line,
319 char **err)
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100320{
321 int retval, cap;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200322 char *res;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100323 unsigned int *tv = NULL;
324 unsigned int *td = NULL;
325 unsigned int val;
326
327 retval = 0;
328
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200329 if (strcmp(args[1], "sessions") == 0) {
Willy Tarreau13a34bd2009-05-10 18:52:49 +0200330 tv = &proxy->fe_sps_lim;
331 td = &defpx->fe_sps_lim;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100332 cap = PR_CAP_FE;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200333 }
334 else {
335 memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100336 return -1;
337 }
338
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200339 if (*args[2] == 0) {
340 memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100341 return -1;
342 }
343
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200344 val = strtoul(args[2], &res, 0);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100345 if (*res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200346 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 +0100347 return -1;
348 }
349
350 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200351 memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability",
352 args[0], args[1], proxy_type_str(proxy), proxy->id,
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100353 (cap & PR_CAP_BE) ? "backend" : "frontend");
354 retval = 1;
355 }
356 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200357 memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100358 retval = 1;
359 }
360
361 *tv = val;
362 return retval;
363}
364
Willy Tarreauc35362a2014-04-25 13:58:37 +0200365/* This function parses a "max-keep-alive-queue" statement in a proxy section.
366 * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it
367 * does not return zero, it will write an error or warning message into a
368 * preallocated buffer returned at <err>. The function must be called with
369 * <args> pointing to the first command line word, with <proxy> pointing to
370 * the proxy being parsed, and <defpx> to the default proxy or NULL.
371 */
372static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy,
373 struct proxy *defpx, const char *file, int line,
374 char **err)
375{
376 int retval;
377 char *res;
378 unsigned int val;
379
380 retval = 0;
381
382 if (*args[1] == 0) {
383 memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]);
384 return -1;
385 }
386
387 val = strtol(args[1], &res, 0);
388 if (*res) {
389 memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
390 return -1;
391 }
392
393 if (!(proxy->cap & PR_CAP_BE)) {
394 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
395 args[0], proxy_type_str(proxy), proxy->id);
396 retval = 1;
397 }
398
399 /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */
400 proxy->max_ka_queue = val + 1;
401 return retval;
402}
403
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200404/* This function parses a "declare" statement in a proxy section. It returns -1
405 * if there is any error, 1 for warning, otherwise 0. If it does not return zero,
406 * it will write an error or warning message into a preallocated buffer returned
407 * at <err>. The function must be called with <args> pointing to the first command
408 * line word, with <proxy> pointing to the proxy being parsed, and <defpx> to the
409 * default proxy or NULL.
410 */
411static int proxy_parse_declare(char **args, int section, struct proxy *curpx,
412 struct proxy *defpx, const char *file, int line,
413 char **err)
414{
415 /* Capture keyword wannot be declared in a default proxy. */
416 if (curpx == defpx) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800417 memprintf(err, "'%s' not available in default section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200418 return -1;
419 }
420
Joseph Herlant59dd2952018-11-15 11:46:55 -0800421 /* Capture keywork is only available in frontend. */
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200422 if (!(curpx->cap & PR_CAP_FE)) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800423 memprintf(err, "'%s' only available in frontend or listen section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200424 return -1;
425 }
426
427 /* Check mandatory second keyword. */
428 if (!args[1] || !*args[1]) {
429 memprintf(err, "'%s' needs a second keyword that specify the type of declaration ('capture')", args[0]);
430 return -1;
431 }
432
Joseph Herlant59dd2952018-11-15 11:46:55 -0800433 /* Actually, declare is only available for declaring capture
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200434 * slot, but in the future it can declare maps or variables.
Joseph Herlant59dd2952018-11-15 11:46:55 -0800435 * So, this section permits to check and switch according with
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200436 * the second keyword.
437 */
438 if (strcmp(args[1], "capture") == 0) {
439 char *error = NULL;
440 long len;
441 struct cap_hdr *hdr;
442
443 /* Check the next keyword. */
444 if (!args[2] || !*args[2] ||
445 (strcmp(args[2], "response") != 0 &&
446 strcmp(args[2], "request") != 0)) {
447 memprintf(err, "'%s %s' requires a direction ('request' or 'response')", args[0], args[1]);
448 return -1;
449 }
450
451 /* Check the 'len' keyword. */
452 if (!args[3] || !*args[3] || strcmp(args[3], "len") != 0) {
453 memprintf(err, "'%s %s' requires a capture length ('len')", args[0], args[1]);
454 return -1;
455 }
456
457 /* Check the length value. */
458 if (!args[4] || !*args[4]) {
459 memprintf(err, "'%s %s': 'len' requires a numeric value that represents the "
460 "capture length",
461 args[0], args[1]);
462 return -1;
463 }
464
465 /* convert the length value. */
466 len = strtol(args[4], &error, 10);
467 if (*error != '\0') {
468 memprintf(err, "'%s %s': cannot parse the length '%s'.",
469 args[0], args[1], args[3]);
470 return -1;
471 }
472
473 /* check length. */
474 if (len <= 0) {
475 memprintf(err, "length must be > 0");
476 return -1;
477 }
478
479 /* register the capture. */
Vincent Bernat02779b62016-04-03 13:48:43 +0200480 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200481 hdr->name = NULL; /* not a header capture */
482 hdr->namelen = 0;
483 hdr->len = len;
484 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
485
486 if (strcmp(args[2], "request") == 0) {
487 hdr->next = curpx->req_cap;
488 hdr->index = curpx->nb_req_cap++;
489 curpx->req_cap = hdr;
490 }
491 if (strcmp(args[2], "response") == 0) {
492 hdr->next = curpx->rsp_cap;
493 hdr->index = curpx->nb_rsp_cap++;
494 curpx->rsp_cap = hdr;
495 }
496 return 0;
497 }
498 else {
499 memprintf(err, "unknown declaration type '%s' (supports 'capture')", args[1]);
500 return -1;
501 }
502}
503
Olivier Houcharda254a372019-04-05 15:30:12 +0200504/* This function parses a "retry-on" statement */
505static int
506proxy_parse_retry_on(char **args, int section, struct proxy *curpx,
507 struct proxy *defpx, const char *file, int line,
508 char **err)
509{
510 int i;
511
512 if (!(*args[1])) {
513 memprintf(err, "'%s' needs at least one keyword to specify when to retry", args[0]);
514 return -1;
515 }
516 if (!(curpx->cap & PR_CAP_BE)) {
517 memprintf(err, "'%s' only available in backend or listen section", args[0]);
518 return -1;
519 }
520 curpx->retry_type = 0;
521 for (i = 1; *(args[i]); i++) {
522 if (!strcmp(args[i], "conn-failure"))
523 curpx->retry_type |= PR_RE_CONN_FAILED;
524 else if (!strcmp(args[i], "empty-response"))
525 curpx->retry_type |= PR_RE_DISCONNECTED;
526 else if (!strcmp(args[i], "response-timeout"))
527 curpx->retry_type |= PR_RE_TIMEOUT;
528 else if (!strcmp(args[i], "404"))
529 curpx->retry_type |= PR_RE_404;
530 else if (!strcmp(args[i], "408"))
531 curpx->retry_type |= PR_RE_408;
532 else if (!strcmp(args[i], "425"))
533 curpx->retry_type |= PR_RE_425;
534 else if (!strcmp(args[i], "500"))
535 curpx->retry_type |= PR_RE_500;
536 else if (!strcmp(args[i], "501"))
537 curpx->retry_type |= PR_RE_501;
538 else if (!strcmp(args[i], "502"))
539 curpx->retry_type |= PR_RE_502;
540 else if (!strcmp(args[i], "503"))
541 curpx->retry_type |= PR_RE_503;
542 else if (!strcmp(args[i], "504"))
543 curpx->retry_type |= PR_RE_504;
Olivier Houchard865d8392019-05-03 22:46:27 +0200544 else if (!strcmp(args[i], "0rtt-rejected"))
545 curpx->retry_type |= PR_RE_EARLY_ERROR;
Olivier Houcharde3249a92019-05-03 23:01:47 +0200546 else if (!strcmp(args[i], "junk-response"))
547 curpx->retry_type |= PR_RE_JUNK_REQUEST;
Olivier Houchardddf0e032019-05-10 18:05:40 +0200548 else if (!(strcmp(args[i], "all-retryable-errors")))
549 curpx->retry_type |= PR_RE_CONN_FAILED | PR_RE_DISCONNECTED |
550 PR_RE_TIMEOUT | PR_RE_500 | PR_RE_502 |
551 PR_RE_503 | PR_RE_504 | PR_RE_EARLY_ERROR |
552 PR_RE_JUNK_REQUEST;
Olivier Houcharda254a372019-04-05 15:30:12 +0200553 else if (!strcmp(args[i], "none")) {
554 if (i != 1 || *args[i + 1]) {
555 memprintf(err, "'%s' 'none' keyworld only usable alone", args[0]);
556 return -1;
557 }
558 } else {
559 memprintf(err, "'%s': unknown keyword '%s'", args[0], args[i]);
560 return -1;
561 }
562
563 }
564
565
566 return 0;
567}
568
Willy Tarreauf79d9502014-03-15 07:22:35 +0100569/* This function inserts proxy <px> into the tree of known proxies. The proxy's
570 * name is used as the storing key so it must already have been initialized.
571 */
572void proxy_store_name(struct proxy *px)
573{
574 px->conf.by_name.key = px->id;
575 ebis_insert(&proxy_by_name, &px->conf.by_name);
576}
577
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200578/* Returns a pointer to the first proxy matching capabilities <cap> and id
579 * <id>. NULL is returned if no match is found. If <table> is non-zero, it
580 * only considers proxies having a table.
Willy Tarreaubc216c42011-08-02 11:25:54 +0200581 */
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200582struct proxy *proxy_find_by_id(int id, int cap, int table)
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200583{
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200584 struct eb32_node *n;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200585
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200586 for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) {
587 struct proxy *px = container_of(n, struct proxy, conf.id);
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100588
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200589 if (px->uuid != id)
590 break;
Alex Williams96532db2009-11-01 21:27:13 -0500591
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200592 if ((px->cap & cap) != cap)
593 continue;
Alex Williams96532db2009-11-01 21:27:13 -0500594
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100595 if (table && (!px->table || !px->table->size))
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200596 continue;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100597
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200598 return px;
599 }
600 return NULL;
601}
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100602
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200603/* Returns a pointer to the first proxy matching either name <name>, or id
604 * <name> if <name> begins with a '#'. NULL is returned if no match is found.
605 * If <table> is non-zero, it only considers proxies having a table.
606 */
607struct proxy *proxy_find_by_name(const char *name, int cap, int table)
608{
609 struct proxy *curproxy;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200610
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200611 if (*name == '#') {
612 curproxy = proxy_find_by_id(atoi(name + 1), cap, table);
613 if (curproxy)
Willy Tarreauc739aa82015-05-26 11:35:41 +0200614 return curproxy;
Alex Williams96532db2009-11-01 21:27:13 -0500615 }
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100616 else {
617 struct ebpt_node *node;
618
619 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
620 curproxy = container_of(node, struct proxy, conf.by_name);
Alex Williams96532db2009-11-01 21:27:13 -0500621
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100622 if (strcmp(curproxy->id, name) != 0)
623 break;
624
625 if ((curproxy->cap & cap) != cap)
626 continue;
627
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100628 if (table && (!curproxy->table || !curproxy->table->size))
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200629 continue;
630
Willy Tarreauc739aa82015-05-26 11:35:41 +0200631 return curproxy;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100632 }
633 }
Willy Tarreauc739aa82015-05-26 11:35:41 +0200634 return NULL;
Alex Williams96532db2009-11-01 21:27:13 -0500635}
636
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200637/* Finds the best match for a proxy with capabilities <cap>, name <name> and id
638 * <id>. At most one of <id> or <name> may be different provided that <cap> is
639 * valid. Either <id> or <name> may be left unspecified (0). The purpose is to
640 * find a proxy based on some information from a previous configuration, across
641 * reloads or during information exchange between peers.
642 *
643 * Names are looked up first if present, then IDs are compared if present. In
644 * case of an inexact match whatever is forced in the configuration has
645 * precedence in the following order :
646 * - 1) forced ID (proves a renaming / change of proxy type)
647 * - 2) proxy name+type (may indicate a move if ID differs)
648 * - 3) automatic ID+type (may indicate a renaming)
649 *
650 * Depending on what is found, we can end up in the following situations :
651 *
652 * name id cap | possible causes
653 * -------------+-----------------
654 * -- -- -- | nothing found
655 * -- -- ok | nothing found
656 * -- ok -- | proxy deleted, ID points to next one
657 * -- ok ok | proxy renamed, or deleted with ID pointing to next one
658 * ok -- -- | proxy deleted, but other half with same name still here (before)
659 * ok -- ok | proxy's ID changed (proxy moved in the config file)
660 * ok ok -- | proxy deleted, but other half with same name still here (after)
661 * ok ok ok | perfect match
662 *
663 * Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits :
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200664 * - PR_FBM_MISMATCH_ID : proxy was found but ID differs
665 * (and ID was not zero)
666 * - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs
667 * (and name was not NULL)
668 * - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with
669 * the same name and/or id
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200670 *
671 * Only a valid proxy is returned. If capabilities do not match, NULL is
672 * returned. The caller can check <diff> to report detailed warnings / errors,
673 * and decide whether or not to use what was found.
674 */
675struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff)
676{
677 struct proxy *byname;
678 struct proxy *byid;
679
680 if (!name && !id)
681 return NULL;
682
683 if (diff)
684 *diff = 0;
685
686 byname = byid = NULL;
687
688 if (name) {
689 byname = proxy_find_by_name(name, cap, 0);
690 if (byname && (!id || byname->uuid == id))
691 return byname;
692 }
693
Joseph Herlant59dd2952018-11-15 11:46:55 -0800694 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200695 * - name not set
696 * - name set but not found
697 * - name found, but ID doesn't match.
698 */
699 if (id) {
700 byid = proxy_find_by_id(id, cap, 0);
701 if (byid) {
702 if (byname) {
703 /* id+type found, name+type found, but not all 3.
704 * ID wins only if forced, otherwise name wins.
705 */
706 if (byid->options & PR_O_FORCED_ID) {
707 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200708 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200709 return byid;
710 }
711 else {
712 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200713 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200714 return byname;
715 }
716 }
717
Joseph Herlant59dd2952018-11-15 11:46:55 -0800718 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200719 * - name not set
720 * - name set but not found
721 */
722 if (name && diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200723 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200724 return byid;
725 }
726
727 /* ID not found */
728 if (byname) {
729 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200730 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200731 return byname;
732 }
733 }
734
Joseph Herlant59dd2952018-11-15 11:46:55 -0800735 /* All remaining possibilities will lead to NULL. If we can report more
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200736 * detailed information to the caller about changed types and/or name,
737 * we'll do it. For example, we could detect that "listen foo" was
738 * split into "frontend foo_ft" and "backend foo_bk" if IDs are forced.
739 * - name not set, ID not found
740 * - name not found, ID not set
741 * - name not found, ID not found
742 */
743 if (!diff)
744 return NULL;
745
746 if (name) {
747 byname = proxy_find_by_name(name, 0, 0);
748 if (byname && (!id || byname->uuid == id))
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200749 *diff |= PR_FBM_MISMATCH_PROXYTYPE;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200750 }
751
752 if (id) {
753 byid = proxy_find_by_id(id, 0, 0);
754 if (byid) {
755 if (!name)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200756 *diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200757 else if (byid->options & PR_O_FORCED_ID)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200758 *diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200759 /* otherwise it's a different proxy that was returned */
760 }
761 }
762 return NULL;
763}
764
Willy Tarreaubaaee002006-06-26 02:48:02 +0200765/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100766 * This function finds a server with matching name within selected proxy.
767 * It also checks if there are more matching servers with
768 * requested name as this often leads into unexpected situations.
769 */
770
771struct server *findserver(const struct proxy *px, const char *name) {
772
773 struct server *cursrv, *target = NULL;
774
775 if (!px)
776 return NULL;
777
778 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
779 if (strcmp(cursrv->id, name))
780 continue;
781
782 if (!target) {
783 target = cursrv;
784 continue;
785 }
786
Christopher Faulet767a84b2017-11-24 16:50:31 +0100787 ha_alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
788 name, px->id);
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100789
790 return NULL;
791 }
792
793 return target;
794}
795
Willy Tarreauff01a212009-03-15 13:46:16 +0100796/* This function checks that the designated proxy has no http directives
797 * enabled. It will output a warning if there are, and will fix some of them.
798 * It returns the number of fatal errors encountered. This should be called
799 * at the end of the configuration parsing if the proxy is not in http mode.
800 * The <file> argument is used to construct the error message.
801 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200802int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100803{
804 if (curproxy->cookie_name != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100805 ha_warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
806 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100807 }
808 if (curproxy->rsp_exp != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100809 ha_warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
810 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100811 }
812 if (curproxy->req_exp != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100813 ha_warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
814 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100815 }
816 if (curproxy->monitor_uri != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100817 ha_warning("config : monitor-uri 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 Tarreauf3e49f92009-10-03 12:21:20 +0200820 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100821 curproxy->lbprm.algo &= ~BE_LB_ALGO;
822 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100823 ha_warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
824 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100825 }
Willy Tarreau17804162009-11-09 21:27:51 +0100826 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
827 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Christopher Faulet767a84b2017-11-24 16:50:31 +0100828 ha_warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
829 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
830 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau17804162009-11-09 21:27:51 +0100831 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200832 if (curproxy->conf.logformat_string == default_http_log_format ||
833 curproxy->conf.logformat_string == clf_http_log_format) {
834 /* Note: we don't change the directive's file:line number */
835 curproxy->conf.logformat_string = default_tcp_log_format;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100836 ha_warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
837 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
838 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau196729e2012-05-31 19:30:26 +0200839 }
840
Willy Tarreauff01a212009-03-15 13:46:16 +0100841 return 0;
842}
843
Willy Tarreau237250c2011-07-29 01:49:03 +0200844/* Perform the most basic initialization of a proxy :
845 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +0200846 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +0200847 */
848void init_new_proxy(struct proxy *p)
849{
850 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100851 p->obj_type = OBJ_TYPE_PROXY;
Patrick Hemmer0355dab2018-05-11 12:52:31 -0400852 p->pendconns = EB_ROOT;
Willy Tarreau237250c2011-07-29 01:49:03 +0200853 LIST_INIT(&p->acl);
854 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200855 LIST_INIT(&p->http_res_rules);
Willy Tarreau353bc9f2014-04-28 22:05:31 +0200856 LIST_INIT(&p->block_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200857 LIST_INIT(&p->redirect_rules);
858 LIST_INIT(&p->mon_fail_cond);
859 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200860 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200861 LIST_INIT(&p->persist_rules);
862 LIST_INIT(&p->sticking_rules);
863 LIST_INIT(&p->storersp_rules);
864 LIST_INIT(&p->tcp_req.inspect_rules);
865 LIST_INIT(&p->tcp_rep.inspect_rules);
866 LIST_INIT(&p->tcp_req.l4_rules);
Willy Tarreau620408f2016-10-21 16:37:51 +0200867 LIST_INIT(&p->tcp_req.l5_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200868 LIST_INIT(&p->req_add);
869 LIST_INIT(&p->rsp_add);
870 LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +0200871 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +0100872 LIST_INIT(&p->logformat);
Dragan Dosen0b85ece2015-09-25 19:17:44 +0200873 LIST_INIT(&p->logformat_sd);
William Lallemanda73203e2012-03-12 12:48:57 +0100874 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200875 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +0200876 LIST_INIT(&p->conf.listeners);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200877 LIST_INIT(&p->conf.args.list);
Baptiste Assmann5ecb77f2013-10-06 23:24:13 +0200878 LIST_INIT(&p->tcpcheck_rules);
Christopher Faulet443ea1a2016-02-04 13:40:26 +0100879 LIST_INIT(&p->filter_configs);
Willy Tarreau237250c2011-07-29 01:49:03 +0200880
881 /* Timeouts are defined as -1 */
882 proxy_reset_timeouts(p);
883 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +0200884
885 /* initial uuid is unassigned (-1) */
886 p->uuid = -1;
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200887
Christopher Faulet1d2b5862019-04-12 16:10:51 +0200888 /* HTX is the default mode, for HTTP and TCP */
889 p->options2 |= PR_O2_USE_HTX;
890
Olivier Houcharda254a372019-04-05 15:30:12 +0200891 /* Default to only allow L4 retries */
892 p->retry_type = PR_RE_CONN_FAILED;
893
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100894 HA_SPIN_INIT(&p->lock);
Willy Tarreau237250c2011-07-29 01:49:03 +0200895}
896
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100897/*
Willy Tarreau2ff76222007-04-09 19:29:56 +0200898 * This function creates all proxy sockets. It should be done very early,
899 * typically before privileges are dropped. The sockets will be registered
900 * but not added to any fd_set, in order not to loose them across the fork().
Willy Tarreau562515c2011-07-25 08:11:52 +0200901 * The proxies also start in READY state because they all have their listeners
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200902 * bound.
Willy Tarreau2ff76222007-04-09 19:29:56 +0200903 *
904 * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
905 * Retryable errors will only be printed if <verbose> is not zero.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200906 */
907int start_proxies(int verbose)
908{
909 struct proxy *curproxy;
910 struct listener *listener;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100911 int lerr, err = ERR_NONE;
912 int pxerr;
913 char msg[100];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200914
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100915 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200916 if (curproxy->state != PR_STNEW)
917 continue; /* already initialized */
918
919 pxerr = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200920 list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
Willy Tarreaue6b98942007-10-29 01:09:36 +0100921 if (listener->state != LI_ASSIGNED)
922 continue; /* already started */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200923
Emeric Bruncf20bf12010-10-22 16:06:11 +0200924 lerr = listener->proto->bind(listener, msg, sizeof(msg));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200925
Willy Tarreaue6b98942007-10-29 01:09:36 +0100926 /* errors are reported if <verbose> is set or if they are fatal */
927 if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
928 if (lerr & ERR_ALERT)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100929 ha_alert("Starting %s %s: %s\n",
930 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaue6b98942007-10-29 01:09:36 +0100931 else if (lerr & ERR_WARN)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100932 ha_warning("Starting %s %s: %s\n",
933 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200934 }
935
Willy Tarreaue6b98942007-10-29 01:09:36 +0100936 err |= lerr;
937 if (lerr & (ERR_ABORT | ERR_FATAL)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200938 pxerr |= 1;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100939 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200940 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100941 else if (lerr & ERR_CODE) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200942 pxerr |= 1;
943 continue;
944 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200945 }
946
947 if (!pxerr) {
Willy Tarreau562515c2011-07-25 08:11:52 +0200948 curproxy->state = PR_STREADY;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200949 send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
950 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100951
952 if (err & ERR_ABORT)
953 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200954 }
955
956 return err;
957}
958
959
960/*
Willy Tarreau918ff602011-07-25 16:33:49 +0200961 * This is the proxy management task. It enables proxies when there are enough
Willy Tarreau87b09662015-04-03 00:22:06 +0200962 * free streams, or stops them when the table is full. It is designed to be
Willy Tarreau918ff602011-07-25 16:33:49 +0200963 * called as a task which is woken up upon stopping or when rate limiting must
964 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200965 */
Olivier Houchard9f6af332018-05-25 14:04:04 +0200966struct task *manage_proxy(struct task *t, void *context, unsigned short state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200967{
Olivier Houchard9f6af332018-05-25 14:04:04 +0200968 struct proxy *p = context;
Willy Tarreau918ff602011-07-25 16:33:49 +0200969 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +0100970 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200971
Willy Tarreau918ff602011-07-25 16:33:49 +0200972 /* We should periodically try to enable listeners waiting for a
973 * global resource here.
974 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200975
Willy Tarreau918ff602011-07-25 16:33:49 +0200976 /* first, let's check if we need to stop the proxy */
977 if (unlikely(stopping && p->state != PR_STSTOPPED)) {
978 int t;
979 t = tick_remain(now_ms, p->stop_time);
980 if (t == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100981 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
982 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau918ff602011-07-25 16:33:49 +0200983 send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
984 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
985 stop_proxy(p);
986 /* try to free more memory */
Willy Tarreaubafbe012017-11-24 17:34:44 +0100987 pool_gc(NULL);
Willy Tarreau918ff602011-07-25 16:33:49 +0200988 }
989 else {
990 next = tick_first(next, p->stop_time);
991 }
992 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200993
Willy Tarreau3a925c12013-09-04 17:54:01 +0200994 /* If the proxy holds a stick table, we need to purge all unused
995 * entries. These are all the ones in the table with ref_cnt == 0
996 * and all the ones in the pool used to allocate new entries. Any
Willy Tarreau87b09662015-04-03 00:22:06 +0200997 * entry attached to an existing stream waiting for a store will
Willy Tarreau3a925c12013-09-04 17:54:01 +0200998 * be in neither list. Any entry being dumped will have ref_cnt > 0.
999 * However we protect tables that are being synced to peers.
1000 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001001 if (unlikely(stopping && p->state == PR_STSTOPPED && p->table && p->table->current)) {
1002 if (!p->table->syncing) {
1003 stktable_trash_oldest(p->table, p->table->current);
Willy Tarreaubafbe012017-11-24 17:34:44 +01001004 pool_gc(NULL);
Willy Tarreau3a925c12013-09-04 17:54:01 +02001005 }
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001006 if (p->table->current) {
Willy Tarreau3a925c12013-09-04 17:54:01 +02001007 /* some entries still remain, let's recheck in one second */
1008 next = tick_first(next, tick_add(now_ms, 1000));
1009 }
1010 }
1011
Willy Tarreau918ff602011-07-25 16:33:49 +02001012 /* the rest below is just for frontends */
1013 if (!(p->cap & PR_CAP_FE))
1014 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001015
Willy Tarreau918ff602011-07-25 16:33:49 +02001016 /* check the various reasons we may find to block the frontend */
1017 if (unlikely(p->feconn >= p->maxconn)) {
1018 if (p->state == PR_STREADY)
1019 p->state = PR_STFULL;
1020 goto out;
1021 }
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001022
Willy Tarreau918ff602011-07-25 16:33:49 +02001023 /* OK we have no reason to block, so let's unblock if we were blocking */
1024 if (p->state == PR_STFULL)
1025 p->state = PR_STREADY;
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001026
Willy Tarreau918ff602011-07-25 16:33:49 +02001027 if (p->fe_sps_lim &&
1028 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
1029 /* we're blocking because a limit was reached on the number of
1030 * requests/s on the frontend. We want to re-check ASAP, which
1031 * means in 1 ms before estimated expiration date, because the
1032 * timer will have settled down.
1033 */
1034 next = tick_first(next, tick_add(now_ms, wait));
1035 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001036 }
Willy Tarreau918ff602011-07-25 16:33:49 +02001037
1038 /* The proxy is not limited so we can re-enable any waiting listener */
1039 if (!LIST_ISEMPTY(&p->listener_queue))
1040 dequeue_all_listeners(&p->listener_queue);
1041 out:
1042 t->expire = next;
1043 task_queue(t);
1044 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001045}
1046
1047
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001048static int proxy_parse_hard_stop_after(char **args, int section_type, struct proxy *curpx,
1049 struct proxy *defpx, const char *file, int line,
1050 char **err)
1051{
1052 const char *res;
1053
1054 if (!*args[1]) {
1055 memprintf(err, "'%s' expects <time> as argument.\n", args[0]);
1056 return -1;
1057 }
1058 res = parse_time_err(args[1], &global.hard_stop_after, TIME_UNIT_MS);
1059 if (res) {
1060 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
1061 return -1;
1062 }
1063 return 0;
1064}
1065
Olivier Houchard9f6af332018-05-25 14:04:04 +02001066struct task *hard_stop(struct task *t, void *context, unsigned short state)
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001067{
1068 struct proxy *p;
1069 struct stream *s;
1070
1071 if (killed) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001072 ha_warning("Some tasks resisted to hard-stop, exiting now.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001073 send_log(NULL, LOG_WARNING, "Some tasks resisted to hard-stop, exiting now.\n");
Joseph Herlant59dd2952018-11-15 11:46:55 -08001074 /* Do some cleanup and explicitly quit */
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001075 deinit();
1076 exit(0);
1077 }
1078
Christopher Faulet767a84b2017-11-24 16:50:31 +01001079 ha_warning("soft-stop running for too long, performing a hard-stop.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001080 send_log(NULL, LOG_WARNING, "soft-stop running for too long, performing a hard-stop.\n");
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001081 p = proxies_list;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001082 while (p) {
1083 if ((p->cap & PR_CAP_FE) && (p->feconn > 0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001084 ha_warning("Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1085 p->id, p->feconn);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001086 send_log(p, LOG_WARNING, "Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1087 p->id, p->feconn);
1088 }
1089 p = p->next;
1090 }
1091 list_for_each_entry(s, &streams, list) {
1092 stream_shutdown(s, SF_ERR_KILLED);
1093 }
1094
1095 killed = 1;
1096 t->expire = tick_add(now_ms, MS_TO_TICKS(1000));
1097 return t;
1098}
1099
Willy Tarreaubaaee002006-06-26 02:48:02 +02001100/*
1101 * this function disables health-check servers so that the process will quickly be ignored
1102 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
1103 * time will not be used since it would already not listen anymore to the socket.
1104 */
1105void soft_stop(void)
1106{
1107 struct proxy *p;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001108 struct peers *prs;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001109 struct task *task;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001110
1111 stopping = 1;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001112 if (tick_isset(global.hard_stop_after)) {
Emeric Brunc60def82017-09-27 14:59:38 +02001113 task = task_new(MAX_THREADS_MASK);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001114 if (task) {
1115 task->process = hard_stop;
1116 task_schedule(task, tick_add(now_ms, global.hard_stop_after));
1117 }
1118 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001119 ha_alert("out of memory trying to allocate the hard-stop task.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001120 }
1121 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001122 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001123 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001124 while (p) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001125 /* Zombie proxy, let's close the file descriptors */
1126 if (p->state == PR_STSTOPPED &&
1127 !LIST_ISEMPTY(&p->conf.listeners) &&
1128 LIST_ELEM(p->conf.listeners.n,
1129 struct listener *, by_fe)->state >= LI_ZOMBIE) {
1130 struct listener *l;
1131 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1132 if (l->state >= LI_ZOMBIE)
1133 close(l->fd);
1134 l->state = LI_INIT;
1135 }
1136 }
1137
Willy Tarreaubaaee002006-06-26 02:48:02 +02001138 if (p->state != PR_STSTOPPED) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001139 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 +02001140 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 +02001141 p->stop_time = tick_add(now_ms, p->grace);
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001142
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001143 /* Note: do not wake up stopped proxies' task nor their tables'
1144 * tasks as these ones might point to already released entries.
1145 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001146 if (p->table && p->table->size && p->table->sync_task)
1147 task_wakeup(p->table->sync_task, TASK_WOKEN_MSG);
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001148
1149 if (p->task)
1150 task_wakeup(p->task, TASK_WOKEN_MSG);
1151 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001152 p = p->next;
1153 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001154
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001155 prs = cfg_peers;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001156 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001157 if (prs->peers_fe)
1158 stop_proxy(prs->peers_fe);
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001159 prs = prs->next;
1160 }
Willy Tarreaud0807c32010-08-27 18:26:11 +02001161 /* signal zero is used to broadcast the "stopping" event */
1162 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001163}
1164
1165
Willy Tarreaube58c382011-07-24 18:28:10 +02001166/* Temporarily disables listening on all of the proxy's listeners. Upon
1167 * success, the proxy enters the PR_PAUSED state. If disabling at least one
1168 * listener returns an error, then the proxy state is set to PR_STERROR
Willy Tarreauce8fe252011-09-07 19:14:57 +02001169 * because we don't know how to resume from this. The function returns 0
1170 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001171 */
Willy Tarreauce8fe252011-09-07 19:14:57 +02001172int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001173{
1174 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +02001175
1176 if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
1177 p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
1178 return 1;
1179
Christopher Faulet767a84b2017-11-24 16:50:31 +01001180 ha_warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001181 send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
1182
Willy Tarreau4348fad2012-09-20 16:48:07 +02001183 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreaube58c382011-07-24 18:28:10 +02001184 if (!pause_listener(l))
Willy Tarreaubaaee002006-06-26 02:48:02 +02001185 p->state = PR_STERROR;
1186 }
Willy Tarreauce8fe252011-09-07 19:14:57 +02001187
1188 if (p->state == PR_STERROR) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001189 ha_warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001190 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
1191 return 0;
1192 }
1193
1194 p->state = PR_STPAUSED;
1195 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +02001196}
1197
Olivier Houchard1fc05162017-04-06 01:05:05 +02001198/* This function makes the proxy unusable, but keeps the listening sockets
1199 * opened, so that if any process requests them, we are able to serve them.
1200 * This should only be called early, before we started accepting requests.
1201 */
1202void zombify_proxy(struct proxy *p)
1203{
1204 struct listener *l;
1205 struct listener *first_to_listen = NULL;
1206
1207 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1208 enum li_state oldstate = l->state;
1209
1210 unbind_listener_no_close(l);
1211 if (l->state >= LI_ASSIGNED) {
1212 delete_listener(l);
Olivier Houchard1fc05162017-04-06 01:05:05 +02001213 }
1214 /*
1215 * Pretend we're still up and running so that the fd
1216 * will be sent if asked.
1217 */
1218 l->state = LI_ZOMBIE;
1219 if (!first_to_listen && oldstate >= LI_LISTEN)
1220 first_to_listen = l;
1221 }
1222 /* Quick hack : at stop time, to know we have to close the sockets
1223 * despite the proxy being marked as stopped, make the first listener
1224 * of the listener list an active one, so that we don't have to
1225 * parse the whole list to be sure.
1226 */
1227 if (first_to_listen && LIST_ELEM(p->conf.listeners.n,
1228 struct listener *, by_fe) != first_to_listen) {
1229 LIST_DEL(&l->by_fe);
1230 LIST_ADD(&p->conf.listeners, &l->by_fe);
1231 }
1232
1233 p->state = PR_STSTOPPED;
1234}
Willy Tarreauda250db2008-10-12 12:07:48 +02001235
1236/*
1237 * This function completely stops a proxy and releases its listeners. It has
1238 * to be called when going down in order to release the ports so that another
1239 * process may bind to them. It must also be called on disabled proxies at the
William Lallemandc59f9882018-11-16 16:57:21 +01001240 * end of start-up. If all listeners are closed, the proxy is set to the
Willy Tarreauda250db2008-10-12 12:07:48 +02001241 * PR_STSTOPPED state.
1242 */
1243void stop_proxy(struct proxy *p)
1244{
1245 struct listener *l;
William Lallemandc59f9882018-11-16 16:57:21 +01001246 int nostop = 0;
Willy Tarreauda250db2008-10-12 12:07:48 +02001247
Willy Tarreau4348fad2012-09-20 16:48:07 +02001248 list_for_each_entry(l, &p->conf.listeners, by_fe) {
William Lallemandc59f9882018-11-16 16:57:21 +01001249 if (l->options & LI_O_NOSTOP) {
1250 HA_ATOMIC_ADD(&unstoppable_jobs, 1);
1251 nostop = 1;
1252 continue;
1253 }
Willy Tarreauda250db2008-10-12 12:07:48 +02001254 unbind_listener(l);
1255 if (l->state >= LI_ASSIGNED) {
1256 delete_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001257 }
1258 }
William Lallemandc59f9882018-11-16 16:57:21 +01001259 if (!nostop)
1260 p->state = PR_STSTOPPED;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001261}
1262
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001263/* This function resumes listening on the specified proxy. It scans all of its
1264 * listeners and tries to enable them all. If any of them fails, the proxy is
1265 * put back to the paused state. It returns 1 upon success, or zero if an error
1266 * is encountered.
1267 */
1268int resume_proxy(struct proxy *p)
1269{
1270 struct listener *l;
1271 int fail;
1272
1273 if (p->state != PR_STPAUSED)
1274 return 1;
1275
Christopher Faulet767a84b2017-11-24 16:50:31 +01001276 ha_warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001277 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
1278
1279 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +02001280 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001281 if (!resume_listener(l)) {
1282 int port;
1283
1284 port = get_host_port(&l->addr);
1285 if (port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001286 ha_warning("Port %d busy while trying to enable %s %s.\n",
1287 port, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001288 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
1289 port, proxy_cap_str(p->cap), p->id);
1290 }
1291 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001292 ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
1293 l->luid, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001294 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
1295 l->luid, proxy_cap_str(p->cap), p->id);
1296 }
1297
1298 /* Another port might have been enabled. Let's stop everything. */
1299 fail = 1;
1300 break;
1301 }
1302 }
1303
1304 p->state = PR_STREADY;
1305 if (fail) {
1306 pause_proxy(p);
1307 return 0;
1308 }
1309 return 1;
1310}
1311
Willy Tarreaubaaee002006-06-26 02:48:02 +02001312/*
1313 * This function temporarily disables listening so that another new instance
1314 * can start listening. It is designed to be called upon reception of a
1315 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
1316 * the proxy, or a SIGTTIN can be sent to listen again.
1317 */
1318void pause_proxies(void)
1319{
1320 int err;
1321 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001322 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001323
1324 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001325 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001326 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001327 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +02001328 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001329 p = p->next;
1330 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001331
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001332 prs = cfg_peers;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001333 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001334 if (prs->peers_fe)
1335 err |= !pause_proxy(prs->peers_fe);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001336 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001337 }
1338
Willy Tarreaubaaee002006-06-26 02:48:02 +02001339 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001340 ha_warning("Some proxies refused to pause, performing soft stop now.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02001341 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
1342 soft_stop();
1343 }
1344}
1345
1346
1347/*
1348 * This function reactivates listening. This can be used after a call to
1349 * sig_pause(), for example when a new instance has failed starting up.
1350 * It is designed to be called upon reception of a SIGTTIN.
1351 */
Willy Tarreaube58c382011-07-24 18:28:10 +02001352void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001353{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001354 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001355 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001356 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001357
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001358 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001359 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001360 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001361 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001362 err |= !resume_proxy(p);
1363 p = p->next;
1364 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001365
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001366 prs = cfg_peers;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001367 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001368 if (prs->peers_fe)
1369 err |= !resume_proxy(prs->peers_fe);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001370 prs = prs->next;
1371 }
Willy Tarreaube58c382011-07-24 18:28:10 +02001372
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001373 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001374 ha_warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001375 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 +02001376 }
1377}
1378
Willy Tarreau87b09662015-04-03 00:22:06 +02001379/* Set current stream's backend to <be>. Nothing is done if the
1380 * stream already had a backend assigned, which is indicated by
Willy Tarreaue7dff022015-04-03 01:14:29 +02001381 * s->flags & SF_BE_ASSIGNED.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001382 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001383 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001384 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001385int stream_set_backend(struct stream *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001386{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001387 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001388 return 1;
Christopher Faulet41179042016-06-21 11:54:52 +02001389
1390 if (flt_set_stream_backend(s, be) < 0)
1391 return 0;
1392
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001393 s->be = be;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001394 HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
1395 HA_ATOMIC_ADD(&be->beconn, 1));
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001396 proxy_inc_be_ctr(be);
1397
Willy Tarreau3e451842019-02-01 15:06:09 +01001398 /* HTX/legacy must match */
Christopher Fauletbbe68542019-04-08 10:53:51 +02001399 if ((strm_fe(s)->options2 ^ be->options2) & PR_O2_USE_HTX)
Willy Tarreau3e451842019-02-01 15:06:09 +01001400 return 0;
1401
Willy Tarreau87b09662015-04-03 00:22:06 +02001402 /* assign new parameters to the stream from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +02001403 s->si[1].flags &= ~SI_FL_INDEP_STR;
1404 if (be->options2 & PR_O2_INDEPSTR)
1405 s->si[1].flags |= SI_FL_INDEP_STR;
1406
Hongbo Longe39683c2017-03-10 18:41:51 +01001407 if (tick_isset(be->timeout.serverfin))
1408 s->si[1].hcto = be->timeout.serverfin;
1409
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001410 /* We want to enable the backend-specific analysers except those which
1411 * were already run as part of the frontend/listener. Note that it would
1412 * be more reliable to store the list of analysers that have been run,
1413 * but what we do here is OK for now.
1414 */
Christopher Faulet70e2f272017-01-09 16:33:19 +01001415 s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001416
Willy Tarreau51aecc72009-07-12 09:47:04 +02001417 /* If the target backend requires HTTP processing, we have to allocate
Willy Tarreaueee5b512015-04-03 23:46:31 +02001418 * the HTTP transaction and hdr_idx if we did not have one.
Willy Tarreau51aecc72009-07-12 09:47:04 +02001419 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001420 if (unlikely(!s->txn && be->http_needed)) {
1421 if (unlikely(!http_alloc_txn(s)))
Willy Tarreau51aecc72009-07-12 09:47:04 +02001422 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +02001423
1424 /* and now initialize the HTTP transaction state */
1425 http_init_txn(s);
Willy Tarreau51aecc72009-07-12 09:47:04 +02001426 }
1427
Christopher Faulet309c6412015-12-02 09:57:32 +01001428 /* Be sure to filter request headers if the backend is an HTTP proxy and
1429 * if there are filters attached to the stream. */
1430 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +01001431 s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +01001432
Willy Tarreaueee5b512015-04-03 23:46:31 +02001433 if (s->txn) {
1434 if (be->options2 & PR_O2_RSPBUG_OK)
1435 s->txn->rsp.err_pos = -1; /* let buggy responses pass */
Willy Tarreau4e21ff92014-09-30 18:44:22 +02001436
Willy Tarreaueee5b512015-04-03 23:46:31 +02001437 /* If we chain to an HTTP backend running a different HTTP mode, we
1438 * have to re-adjust the desired keep-alive/close mode to accommodate
1439 * both the frontend's and the backend's modes.
1440 */
Willy Tarreaud0d8da92015-04-04 02:10:38 +02001441 if (strm_fe(s)->mode == PR_MODE_HTTP && be->mode == PR_MODE_HTTP &&
1442 ((strm_fe(s)->options & PR_O_HTTP_MODE) != (be->options & PR_O_HTTP_MODE)))
Willy Tarreaueee5b512015-04-03 23:46:31 +02001443 http_adjust_conn_mode(s, s->txn, &s->txn->req);
Willy Tarreau80a92c02014-03-12 10:41:13 +01001444
Christopher Fauletbbe68542019-04-08 10:53:51 +02001445 /* If we chain a TCP frontend to an HTX backend, we must upgrade
1446 * the client mux */
1447 if (!IS_HTX_STRM(s) && be->mode == PR_MODE_HTTP && (be->options2 & PR_O2_USE_HTX)) {
1448 struct connection *conn = objt_conn(strm_sess(s)->origin);
1449 struct conn_stream *cs = objt_cs(s->si[0].end);
1450
1451 if (conn && cs) {
1452 si_rx_endp_more(&s->si[0]);
1453 if (conn_upgrade_mux_fe(conn, cs, &s->req.buf, ist(""), PROTO_MODE_HTX) == -1)
1454 return 0;
1455 s->flags |= SF_HTX;
1456 }
1457 }
1458
Willy Tarreaueee5b512015-04-03 23:46:31 +02001459 /* If an LB algorithm needs to access some pre-parsed body contents,
1460 * we must not start to forward anything until the connection is
1461 * confirmed otherwise we'll lose the pointer to these data and
1462 * prevent the hash from being doable again after a redispatch.
1463 */
1464 if (be->mode == PR_MODE_HTTP &&
1465 (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM))
1466 s->txn->req.flags |= HTTP_MSGF_WAIT_CONN;
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001467
1468 /* we may request to parse a request body */
1469 if ((be->options & PR_O_WREQ_BODY) &&
1470 (s->txn->req.body_len || (s->txn->req.flags & HTTP_MSGF_TE_CHNK)))
1471 s->req.analysers |= AN_REQ_HTTP_BODY;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001472 }
1473
1474 s->flags |= SF_BE_ASSIGNED;
Willy Tarreau96e31212011-05-30 18:10:30 +02001475 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001476 s->req.flags |= CF_NEVER_WAIT;
1477 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02001478 }
1479
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001480 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001481}
1482
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001483/* Capture a bad request or response and archive it in the proxy's structure.
1484 * It is relatively protocol-agnostic so it requires that a number of elements
1485 * are passed :
1486 * - <proxy> is the proxy where the error was detected and where the snapshot
1487 * needs to be stored
Joseph Herlant59dd2952018-11-15 11:46:55 -08001488 * - <is_back> indicates that the error happened when receiving the response
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001489 * - <other_end> is a pointer to the proxy on the other side when known
1490 * - <target> is the target of the connection, usually a server or a proxy
1491 * - <sess> is the session which experienced the error
1492 * - <ctx> may be NULL or should contain any info relevant to the protocol
1493 * - <buf> is the buffer containing the offending data
1494 * - <buf_ofs> is the position of this buffer's input data in the input
1495 * stream, starting at zero. It may be passed as zero if unknown.
1496 * - <buf_out> is the portion of <buf->data> which was already forwarded and
1497 * which precedes the buffer's input. The buffer's input starts at
1498 * buf->head + buf_out.
1499 * - <err_pos> is the pointer to the faulty byte in the buffer's input.
1500 * - <show> is the callback to use to display <ctx>. It may be NULL.
1501 */
1502void proxy_capture_error(struct proxy *proxy, int is_back,
1503 struct proxy *other_end, enum obj_type *target,
1504 const struct session *sess,
1505 const struct buffer *buf, long buf_ofs,
1506 unsigned int buf_out, unsigned int err_pos,
1507 const union error_snapshot_ctx *ctx,
1508 void (*show)(struct buffer *, const struct error_snapshot *))
1509{
1510 struct error_snapshot *es;
1511 unsigned int buf_len;
1512 int len1, len2;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001513 unsigned int ev_id;
1514
1515 ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
1516
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001517 buf_len = b_data(buf) - buf_out;
1518
1519 es = malloc(sizeof(*es) + buf_len);
Willy Tarreauc55015e2018-09-07 19:02:32 +02001520 if (!es)
1521 return;
1522
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001523 es->buf_len = buf_len;
1524 es->ev_id = ev_id;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001525
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001526 len1 = b_size(buf) - buf_len;
1527 if (len1 > buf_len)
1528 len1 = buf_len;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001529
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001530 if (len1) {
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001531 memcpy(es->buf, b_peek(buf, buf_out), len1);
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001532 len2 = buf_len - len1;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001533 if (len2)
1534 memcpy(es->buf + len1, b_orig(buf), len2);
1535 }
1536
1537 es->buf_err = err_pos;
1538 es->when = date; // user-visible date
1539 es->srv = objt_server(target);
1540 es->oe = other_end;
1541 if (objt_conn(sess->origin))
1542 es->src = __objt_conn(sess->origin)->addr.from;
1543 else
1544 memset(&es->src, 0, sizeof(es->src));
1545
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001546 es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
1547 es->buf_out = buf_out;
1548 es->buf_ofs = buf_ofs;
1549
1550 /* be sure to indicate the offset of the first IN byte */
1551 if (es->buf_ofs >= es->buf_len)
1552 es->buf_ofs -= es->buf_len;
1553 else
1554 es->buf_ofs = 0;
1555
1556 /* protocol-specific part now */
1557 if (ctx)
1558 es->ctx = *ctx;
1559 else
1560 memset(&es->ctx, 0, sizeof(es->ctx));
1561 es->show = show;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001562
1563 /* note: we still lock since we have to be certain that nobody is
1564 * dumping the output while we free.
1565 */
1566 HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
1567 if (is_back) {
1568 es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
1569 } else {
1570 es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
1571 }
1572 free(es);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001573 HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
1574}
1575
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001576/* Configure all proxies which lack a maxconn setting to use the global one by
1577 * default. This avoids the common mistake consisting in setting maxconn only
1578 * in the global section and discovering the hard way that it doesn't propagate
1579 * through the frontends. These values are also propagated through the various
1580 * targetted backends, whose fullconn is finally calculated if not yet set.
1581 */
1582void proxy_adjust_all_maxconn()
1583{
1584 struct proxy *curproxy;
1585 struct switching_rule *swrule1, *swrule2;
1586
1587 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1588 if (curproxy->state == PR_STSTOPPED)
1589 continue;
1590
1591 if (!(curproxy->cap & PR_CAP_FE))
1592 continue;
1593
1594 if (!curproxy->maxconn)
1595 curproxy->maxconn = global.maxconn;
1596
1597 /* update the target backend's fullconn count : default_backend */
1598 if (curproxy->defbe.be)
1599 curproxy->defbe.be->tot_fe_maxconn += curproxy->maxconn;
1600 else if ((curproxy->cap & PR_CAP_LISTEN) == PR_CAP_LISTEN)
1601 curproxy->tot_fe_maxconn += curproxy->maxconn;
1602
1603 list_for_each_entry(swrule1, &curproxy->switching_rules, list) {
1604 /* For each target of switching rules, we update their
1605 * tot_fe_maxconn, except if a previous rule points to
1606 * the same backend or to the default backend.
1607 */
1608 if (swrule1->be.backend != curproxy->defbe.be) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001609 /* note: swrule1->be.backend isn't a backend if the rule
1610 * is dynamic, it's an expression instead, so it must not
1611 * be dereferenced as a backend before being certain it is.
1612 */
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001613 list_for_each_entry(swrule2, &curproxy->switching_rules, list) {
1614 if (swrule2 == swrule1) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001615 if (!swrule1->dynamic)
1616 swrule1->be.backend->tot_fe_maxconn += curproxy->maxconn;
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001617 break;
1618 }
1619 else if (!swrule2->dynamic && swrule2->be.backend == swrule1->be.backend) {
1620 /* there are multiple refs of this backend */
1621 break;
1622 }
1623 }
1624 }
1625 }
1626 }
1627
1628 /* automatically compute fullconn if not set. We must not do it in the
1629 * loop above because cross-references are not yet fully resolved.
1630 */
1631 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1632 if (curproxy->state == PR_STSTOPPED)
1633 continue;
1634
1635 /* If <fullconn> is not set, let's set it to 10% of the sum of
1636 * the possible incoming frontend's maxconns.
1637 */
1638 if (!curproxy->fullconn && (curproxy->cap & PR_CAP_BE)) {
1639 /* we have the sum of the maxconns in <total>. We only
1640 * keep 10% of that sum to set the default fullconn, with
1641 * a hard minimum of 1 (to avoid a divide by zero).
1642 */
1643 curproxy->fullconn = (curproxy->tot_fe_maxconn + 9) / 10;
1644 if (!curproxy->fullconn)
1645 curproxy->fullconn = 1;
1646 }
1647 }
1648}
1649
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001650/* Config keywords below */
1651
Willy Tarreaudc13c112013-06-21 23:16:39 +02001652static struct cfg_kw_list cfg_kws = {ILH, {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001653 { CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001654 { CFG_LISTEN, "timeout", proxy_parse_timeout },
1655 { CFG_LISTEN, "clitimeout", proxy_parse_timeout },
1656 { CFG_LISTEN, "contimeout", proxy_parse_timeout },
1657 { CFG_LISTEN, "srvtimeout", proxy_parse_timeout },
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001658 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreauc35362a2014-04-25 13:58:37 +02001659 { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +02001660 { CFG_LISTEN, "declare", proxy_parse_declare },
Olivier Houcharda254a372019-04-05 15:30:12 +02001661 { CFG_LISTEN, "retry-on", proxy_parse_retry_on },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001662 { 0, NULL, NULL },
1663}};
1664
Willy Tarreau0108d902018-11-25 19:14:37 +01001665INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
1666
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001667/* Expects to find a frontend named <arg> and returns it, otherwise displays various
1668 * adequate error messages and returns NULL. This function is designed to be used by
1669 * functions requiring a frontend on the CLI.
1670 */
1671struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
1672{
1673 struct proxy *px;
1674
1675 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001676 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001677 appctx->ctx.cli.msg = "A frontend name is expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001678 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001679 return NULL;
1680 }
1681
1682 px = proxy_fe_by_name(arg);
1683 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001684 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001685 appctx->ctx.cli.msg = "No such frontend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001686 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001687 return NULL;
1688 }
1689 return px;
1690}
1691
Olivier Houchard614f8d72017-03-14 20:08:46 +01001692/* Expects to find a backend named <arg> and returns it, otherwise displays various
1693 * adequate error messages and returns NULL. This function is designed to be used by
1694 * functions requiring a frontend on the CLI.
1695 */
1696struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
1697{
1698 struct proxy *px;
1699
1700 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001701 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001702 appctx->ctx.cli.msg = "A backend name is expected.\n";
1703 appctx->st0 = CLI_ST_PRINT;
1704 return NULL;
1705 }
1706
1707 px = proxy_be_by_name(arg);
1708 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001709 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001710 appctx->ctx.cli.msg = "No such backend.\n";
1711 appctx->st0 = CLI_ST_PRINT;
1712 return NULL;
1713 }
1714 return px;
1715}
1716
1717
William Lallemanda6c5f332016-11-19 02:25:36 +01001718/* parse a "show servers" CLI line, returns 0 if it wants to start the dump or
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001719 * 1 if it stops immediately. If an argument is specified, it will set the proxy
1720 * pointer into cli.p0 and its ID into cli.i0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001721 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001722static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemanda6c5f332016-11-19 02:25:36 +01001723{
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001724 struct proxy *px;
William Lallemanda6c5f332016-11-19 02:25:36 +01001725
1726 /* check if a backend name has been provided */
1727 if (*args[3]) {
1728 /* read server state from local file */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001729 px = proxy_be_by_name(args[3]);
William Lallemanda6c5f332016-11-19 02:25:36 +01001730
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001731 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001732 appctx->ctx.cli.severity = LOG_ERR;
William Lallemanda6c5f332016-11-19 02:25:36 +01001733 appctx->ctx.cli.msg = "Can't find backend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001734 appctx->st0 = CLI_ST_PRINT;
William Lallemanda6c5f332016-11-19 02:25:36 +01001735 return 1;
1736 }
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001737 appctx->ctx.cli.p0 = px;
1738 appctx->ctx.cli.i0 = px->uuid;
William Lallemanda6c5f332016-11-19 02:25:36 +01001739 }
1740 return 0;
1741}
1742
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001743/* dumps server state information into <buf> for all the servers found in backend cli.p0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001744 * These information are all the parameters which may change during HAProxy runtime.
1745 * By default, we only export to the last known server state file format.
1746 * These information can be used at next startup to recover same level of server state.
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001747 * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
1748 * pointer from cli.p1.
William Lallemanda6c5f332016-11-19 02:25:36 +01001749 */
Willy Tarreau83061a82018-07-13 11:56:34 +02001750static int dump_servers_state(struct stream_interface *si, struct buffer *buf)
William Lallemanda6c5f332016-11-19 02:25:36 +01001751{
1752 struct appctx *appctx = __objt_appctx(si->end);
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001753 struct proxy *px = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001754 struct server *srv;
1755 char srv_addr[INET6_ADDRSTRLEN + 1];
1756 time_t srv_time_since_last_change;
1757 int bk_f_forced_id, srv_f_forced_id;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001758 char *srvrecord;
William Lallemanda6c5f332016-11-19 02:25:36 +01001759
William Lallemanda6c5f332016-11-19 02:25:36 +01001760 /* we don't want to report any state if the backend is not enabled on this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001761 if (!(proc_mask(px->bind_proc) & pid_bit))
William Lallemanda6c5f332016-11-19 02:25:36 +01001762 return 1;
1763
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001764 if (!appctx->ctx.cli.p1)
1765 appctx->ctx.cli.p1 = px->srv;
William Lallemanda6c5f332016-11-19 02:25:36 +01001766
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001767 for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
1768 srv = appctx->ctx.cli.p1;
William Lallemanda6c5f332016-11-19 02:25:36 +01001769 srv_addr[0] = '\0';
1770
1771 switch (srv->addr.ss_family) {
1772 case AF_INET:
1773 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
1774 srv_addr, INET_ADDRSTRLEN + 1);
1775 break;
1776 case AF_INET6:
1777 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
1778 srv_addr, INET6_ADDRSTRLEN + 1);
1779 break;
Daniel Corbett9215ffa2018-05-19 19:43:24 -04001780 default:
1781 memcpy(srv_addr, "-\0", 2);
1782 break;
William Lallemanda6c5f332016-11-19 02:25:36 +01001783 }
1784 srv_time_since_last_change = now.tv_sec - srv->last_change;
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001785 bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001786 srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
1787
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001788 srvrecord = NULL;
1789 if (srv->srvrq && srv->srvrq->name)
1790 srvrecord = srv->srvrq->name;
1791
William Lallemanda6c5f332016-11-19 02:25:36 +01001792 chunk_appendf(buf,
1793 "%d %s "
1794 "%d %s %s "
1795 "%d %d %d %d %ld "
1796 "%d %d %d %d %d "
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001797 "%d %d %s %u %s"
William Lallemanda6c5f332016-11-19 02:25:36 +01001798 "\n",
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001799 px->uuid, px->id,
William Lallemanda6c5f332016-11-19 02:25:36 +01001800 srv->puid, srv->id, srv_addr,
Emeric Brun52a91d32017-08-31 14:41:55 +02001801 srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
William Lallemanda6c5f332016-11-19 02:25:36 +01001802 srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001803 bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
1804 srvrecord ? srvrecord : "-");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001805 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001806 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001807 return 0;
1808 }
1809 }
1810 return 1;
1811}
1812
1813/* Parses backend list or simply use backend name provided by the user to return
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001814 * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
1815 * non-null.
William Lallemanda6c5f332016-11-19 02:25:36 +01001816 */
1817static int cli_io_handler_servers_state(struct appctx *appctx)
1818{
1819 struct stream_interface *si = appctx->owner;
William Lallemanda6c5f332016-11-19 02:25:36 +01001820 struct proxy *curproxy;
1821
1822 chunk_reset(&trash);
1823
1824 if (appctx->st2 == STAT_ST_INIT) {
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001825 if (!appctx->ctx.cli.p0)
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001826 appctx->ctx.cli.p0 = proxies_list;
William Lallemanda6c5f332016-11-19 02:25:36 +01001827 appctx->st2 = STAT_ST_HEAD;
1828 }
1829
1830 if (appctx->st2 == STAT_ST_HEAD) {
1831 chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001832 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001833 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001834 return 0;
1835 }
1836 appctx->st2 = STAT_ST_INFO;
1837 }
1838
1839 /* STAT_ST_INFO */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001840 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1841 curproxy = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001842 /* servers are only in backends */
1843 if (curproxy->cap & PR_CAP_BE) {
1844 if (!dump_servers_state(si, &trash))
1845 return 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001846 }
1847 /* only the selected proxy is dumped */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001848 if (appctx->ctx.cli.i0)
William Lallemanda6c5f332016-11-19 02:25:36 +01001849 break;
1850 }
1851
1852 return 1;
1853}
1854
Willy Tarreau608ea592016-12-16 18:01:15 +01001855/* Parses backend list and simply report backend names. It keeps the proxy
1856 * pointer in cli.p0.
1857 */
William Lallemand933efcd2016-11-22 12:34:16 +01001858static int cli_io_handler_show_backend(struct appctx *appctx)
1859{
William Lallemand933efcd2016-11-22 12:34:16 +01001860 struct stream_interface *si = appctx->owner;
1861 struct proxy *curproxy;
1862
1863 chunk_reset(&trash);
1864
Willy Tarreau608ea592016-12-16 18:01:15 +01001865 if (!appctx->ctx.cli.p0) {
William Lallemand933efcd2016-11-22 12:34:16 +01001866 chunk_printf(&trash, "# name\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001867 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001868 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001869 return 0;
1870 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001871 appctx->ctx.cli.p0 = proxies_list;
William Lallemand933efcd2016-11-22 12:34:16 +01001872 }
1873
Willy Tarreau608ea592016-12-16 18:01:15 +01001874 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1875 curproxy = appctx->ctx.cli.p0;
William Lallemand933efcd2016-11-22 12:34:16 +01001876
1877 /* looking for backends only */
1878 if (!(curproxy->cap & PR_CAP_BE))
1879 continue;
1880
1881 /* we don't want to list a backend which is bound to this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001882 if (!(proc_mask(curproxy->bind_proc) & pid_bit))
William Lallemand933efcd2016-11-22 12:34:16 +01001883 continue;
1884
1885 chunk_appendf(&trash, "%s\n", curproxy->id);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001886 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001887 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001888 return 0;
1889 }
1890 }
1891
1892 return 1;
1893}
William Lallemanda6c5f332016-11-19 02:25:36 +01001894
Willy Tarreaua275a372018-08-21 14:50:44 +02001895/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
1896 *
1897 * Grabs the proxy lock and each server's lock.
1898 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001899static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001900{
1901 struct proxy *px;
1902 struct server *s;
1903
1904 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1905 return 1;
1906
1907 px = cli_find_backend(appctx, args[3]);
1908 if (!px)
1909 return 1;
1910
Willy Tarreaua275a372018-08-21 14:50:44 +02001911 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1912
Olivier Houchard614f8d72017-03-14 20:08:46 +01001913 px->ck_opts |= PR_CK_DYNAMIC;
1914
Willy Tarreaua275a372018-08-21 14:50:44 +02001915 for (s = px->srv; s != NULL; s = s->next) {
1916 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001917 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001918 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1919 }
1920
1921 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001922
1923 return 1;
1924}
1925
Willy Tarreaua275a372018-08-21 14:50:44 +02001926/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
1927 *
1928 * Grabs the proxy lock and each server's lock.
1929 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001930static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001931{
1932 struct proxy *px;
1933 struct server *s;
1934
1935 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1936 return 1;
1937
1938 px = cli_find_backend(appctx, args[3]);
1939 if (!px)
1940 return 1;
1941
Willy Tarreaua275a372018-08-21 14:50:44 +02001942 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1943
Olivier Houchard614f8d72017-03-14 20:08:46 +01001944 px->ck_opts &= ~PR_CK_DYNAMIC;
1945
1946 for (s = px->srv; s != NULL; s = s->next) {
Willy Tarreaua275a372018-08-21 14:50:44 +02001947 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001948 if (!(s->flags & SRV_F_COOKIESET)) {
1949 free(s->cookie);
1950 s->cookie = NULL;
1951 }
Willy Tarreaua275a372018-08-21 14:50:44 +02001952 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001953 }
1954
Willy Tarreaua275a372018-08-21 14:50:44 +02001955 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
1956
Olivier Houchard614f8d72017-03-14 20:08:46 +01001957 return 1;
1958}
1959
Willy Tarreaua275a372018-08-21 14:50:44 +02001960/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
1961 *
1962 * Grabs the proxy lock and each server's lock.
1963 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001964static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001965{
1966 struct proxy *px;
1967 struct server *s;
1968 char *newkey;
1969
1970 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1971 return 1;
1972
1973 px = cli_find_backend(appctx, args[3]);
1974 if (!px)
1975 return 1;
1976
1977 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001978 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001979 appctx->ctx.cli.msg = "String value expected.\n";
1980 appctx->st0 = CLI_ST_PRINT;
1981 return 1;
1982 }
1983
1984 newkey = strdup(args[4]);
1985 if (!newkey) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001986 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001987 appctx->ctx.cli.msg = "Failed to allocate memory.\n";
1988 appctx->st0 = CLI_ST_PRINT;
1989 return 1;
1990 }
Willy Tarreaua275a372018-08-21 14:50:44 +02001991
1992 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1993
Olivier Houchard614f8d72017-03-14 20:08:46 +01001994 free(px->dyncookie_key);
1995 px->dyncookie_key = newkey;
1996
Willy Tarreaua275a372018-08-21 14:50:44 +02001997 for (s = px->srv; s != NULL; s = s->next) {
1998 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001999 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02002000 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
2001 }
2002
2003 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002004
2005 return 1;
2006}
2007
Willy Tarreaua275a372018-08-21 14:50:44 +02002008/* Parses the "set maxconn frontend" directive, it always returns 1.
2009 *
2010 * Grabs the proxy lock.
2011 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002012static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002013{
2014 struct proxy *px;
2015 struct listener *l;
2016 int v;
2017
2018 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2019 return 1;
2020
2021 px = cli_find_frontend(appctx, args[3]);
2022 if (!px)
2023 return 1;
2024
2025 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002026 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002027 appctx->ctx.cli.msg = "Integer value expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002028 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002029 return 1;
2030 }
2031
2032 v = atoi(args[4]);
2033 if (v < 0) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002034 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002035 appctx->ctx.cli.msg = "Value out of range.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002036 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002037 return 1;
2038 }
2039
2040 /* OK, the value is fine, so we assign it to the proxy and to all of
2041 * its listeners. The blocked ones will be dequeued.
2042 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002043 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2044
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002045 px->maxconn = v;
2046 list_for_each_entry(l, &px->conf.listeners, by_fe) {
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002047 if (l->state == LI_FULL)
2048 resume_listener(l);
2049 }
2050
2051 if (px->maxconn > px->feconn && !LIST_ISEMPTY(&px->listener_queue))
2052 dequeue_all_listeners(&px->listener_queue);
2053
Willy Tarreaua275a372018-08-21 14:50:44 +02002054 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2055
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002056 return 1;
2057}
2058
Willy Tarreaua275a372018-08-21 14:50:44 +02002059/* Parses the "shutdown frontend" directive, it always returns 1.
2060 *
2061 * Grabs the proxy lock.
2062 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002063static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002064{
2065 struct proxy *px;
2066
2067 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2068 return 1;
2069
2070 px = cli_find_frontend(appctx, args[2]);
2071 if (!px)
2072 return 1;
2073
2074 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002075 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002076 appctx->ctx.cli.msg = "Frontend was already shut down.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002077 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002078 return 1;
2079 }
2080
Christopher Faulet767a84b2017-11-24 16:50:31 +01002081 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2082 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002083 send_log(px, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2084 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreaua275a372018-08-21 14:50:44 +02002085
2086 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002087 stop_proxy(px);
Willy Tarreaua275a372018-08-21 14:50:44 +02002088 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2089
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002090 return 1;
2091}
2092
Willy Tarreaua275a372018-08-21 14:50:44 +02002093/* Parses the "disable frontend" directive, it always returns 1.
2094 *
2095 * Grabs the proxy lock.
2096 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002097static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002098{
2099 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002100 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002101
2102 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2103 return 1;
2104
2105 px = cli_find_frontend(appctx, args[2]);
2106 if (!px)
2107 return 1;
2108
2109 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002110 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002111 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot disable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002112 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002113 return 1;
2114 }
2115
2116 if (px->state == PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002117 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002118 appctx->ctx.cli.msg = "Frontend is already disabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002119 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002120 return 1;
2121 }
2122
Willy Tarreaua275a372018-08-21 14:50:44 +02002123 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2124 ret = pause_proxy(px);
2125 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2126
2127 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002128 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002129 appctx->ctx.cli.msg = "Failed to pause frontend, check logs for precise cause.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002130 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002131 return 1;
2132 }
2133 return 1;
2134}
2135
Willy Tarreaua275a372018-08-21 14:50:44 +02002136/* Parses the "enable frontend" directive, it always returns 1.
2137 *
2138 * Grabs the proxy lock.
2139 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002140static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002141{
2142 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002143 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002144
2145 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2146 return 1;
2147
2148 px = cli_find_frontend(appctx, args[2]);
2149 if (!px)
2150 return 1;
2151
2152 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002153 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002154 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot enable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002155 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002156 return 1;
2157 }
2158
2159 if (px->state != PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002160 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002161 appctx->ctx.cli.msg = "Frontend is already enabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002162 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002163 return 1;
2164 }
2165
Willy Tarreaua275a372018-08-21 14:50:44 +02002166 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2167 ret = resume_proxy(px);
2168 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2169
2170 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002171 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002172 appctx->ctx.cli.msg = "Failed to resume frontend, check logs for precise cause (port conflict?).\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002173 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002174 return 1;
2175 }
2176 return 1;
2177}
2178
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002179/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
2180 * now.
2181 */
2182static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
2183{
2184 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2185 return 1;
2186
2187 if (*args[2]) {
2188 struct proxy *px;
2189
2190 px = proxy_find_by_name(args[2], 0, 0);
2191 if (px)
2192 appctx->ctx.errors.iid = px->uuid;
2193 else
2194 appctx->ctx.errors.iid = atoi(args[2]);
2195
2196 if (!appctx->ctx.errors.iid) {
2197 appctx->ctx.cli.severity = LOG_ERR;
2198 appctx->ctx.cli.msg = "No such proxy.\n";
2199 appctx->st0 = CLI_ST_PRINT;
2200 return 1;
2201 }
2202 }
2203 else
2204 appctx->ctx.errors.iid = -1; // dump all proxies
2205
2206 appctx->ctx.errors.flag = 0;
2207 if (strcmp(args[3], "request") == 0)
2208 appctx->ctx.errors.flag |= 4; // ignore response
2209 else if (strcmp(args[3], "response") == 0)
2210 appctx->ctx.errors.flag |= 2; // ignore request
2211 appctx->ctx.errors.px = NULL;
2212 return 0;
2213}
2214
2215/* This function dumps all captured errors onto the stream interface's
2216 * read buffer. It returns 0 if the output buffer is full and it needs
2217 * to be called again, otherwise non-zero.
2218 */
2219static int cli_io_handler_show_errors(struct appctx *appctx)
2220{
2221 struct stream_interface *si = appctx->owner;
2222 extern const char *monthname[12];
2223
2224 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
2225 return 1;
2226
2227 chunk_reset(&trash);
2228
2229 if (!appctx->ctx.errors.px) {
2230 /* the function had not been called yet, let's prepare the
2231 * buffer for a response.
2232 */
2233 struct tm tm;
2234
2235 get_localtime(date.tv_sec, &tm);
2236 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
2237 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2238 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
2239 error_snapshot_id);
2240
Willy Tarreau36b27362018-09-07 19:55:44 +02002241 if (ci_putchk(si_ic(si), &trash) == -1)
2242 goto cant_send;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002243
2244 appctx->ctx.errors.px = proxies_list;
2245 appctx->ctx.errors.bol = 0;
2246 appctx->ctx.errors.ptr = -1;
2247 }
2248
2249 /* we have two inner loops here, one for the proxy, the other one for
2250 * the buffer.
2251 */
2252 while (appctx->ctx.errors.px) {
2253 struct error_snapshot *es;
2254
Willy Tarreau36b27362018-09-07 19:55:44 +02002255 HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2256
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002257 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002258 es = appctx->ctx.errors.px->invalid_req;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002259 if (appctx->ctx.errors.flag & 2) // skip req
2260 goto next;
2261 }
2262 else {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002263 es = appctx->ctx.errors.px->invalid_rep;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002264 if (appctx->ctx.errors.flag & 4) // skip resp
2265 goto next;
2266 }
2267
Willy Tarreauc55015e2018-09-07 19:02:32 +02002268 if (!es)
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002269 goto next;
2270
2271 if (appctx->ctx.errors.iid >= 0 &&
2272 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
2273 es->oe->uuid != appctx->ctx.errors.iid)
2274 goto next;
2275
2276 if (appctx->ctx.errors.ptr < 0) {
2277 /* just print headers now */
2278
2279 char pn[INET6_ADDRSTRLEN];
2280 struct tm tm;
2281 int port;
2282
2283 get_localtime(es->when.tv_sec, &tm);
2284 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
2285 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2286 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
2287
2288 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
2289 case AF_INET:
2290 case AF_INET6:
2291 port = get_host_port(&es->src);
2292 break;
2293 default:
2294 port = 0;
2295 }
2296
2297 switch (appctx->ctx.errors.flag & 1) {
2298 case 0:
2299 chunk_appendf(&trash,
2300 " frontend %s (#%d): invalid request\n"
2301 " backend %s (#%d)",
2302 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2303 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
2304 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
2305 break;
2306 case 1:
2307 chunk_appendf(&trash,
2308 " backend %s (#%d): invalid response\n"
2309 " frontend %s (#%d)",
2310 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2311 es->oe->id, es->oe->uuid);
2312 break;
2313 }
2314
2315 chunk_appendf(&trash,
2316 ", server %s (#%d), event #%u, src %s:%d\n"
2317 " buffer starts at %llu (including %u out), %u free,\n"
2318 " len %u, wraps at %u, error at position %u\n",
2319 es->srv ? es->srv->id : "<NONE>",
2320 es->srv ? es->srv->puid : -1,
2321 es->ev_id, pn, port,
2322 es->buf_ofs, es->buf_out,
2323 global.tune.bufsize - es->buf_out - es->buf_len,
2324 es->buf_len, es->buf_wrap, es->buf_err);
2325
2326 if (es->show)
2327 es->show(&trash, es);
2328
2329 chunk_appendf(&trash, " \n");
2330
Willy Tarreau36b27362018-09-07 19:55:44 +02002331 if (ci_putchk(si_ic(si), &trash) == -1)
2332 goto cant_send_unlock;
2333
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002334 appctx->ctx.errors.ptr = 0;
2335 appctx->ctx.errors.ev_id = es->ev_id;
2336 }
2337
2338 if (appctx->ctx.errors.ev_id != es->ev_id) {
2339 /* the snapshot changed while we were dumping it */
2340 chunk_appendf(&trash,
2341 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau36b27362018-09-07 19:55:44 +02002342 if (ci_putchk(si_ic(si), &trash) == -1)
2343 goto cant_send_unlock;
2344
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002345 goto next;
2346 }
2347
2348 /* OK, ptr >= 0, so we have to dump the current line */
Willy Tarreau4bc7d902018-09-07 20:07:17 +02002349 while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002350 int newptr;
2351 int newline;
2352
2353 newline = appctx->ctx.errors.bol;
2354 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
2355 if (newptr == appctx->ctx.errors.ptr)
Willy Tarreau36b27362018-09-07 19:55:44 +02002356 goto cant_send_unlock;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002357
Willy Tarreau36b27362018-09-07 19:55:44 +02002358 if (ci_putchk(si_ic(si), &trash) == -1)
2359 goto cant_send_unlock;
2360
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002361 appctx->ctx.errors.ptr = newptr;
2362 appctx->ctx.errors.bol = newline;
2363 };
2364 next:
Willy Tarreau36b27362018-09-07 19:55:44 +02002365 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002366 appctx->ctx.errors.bol = 0;
2367 appctx->ctx.errors.ptr = -1;
2368 appctx->ctx.errors.flag ^= 1;
2369 if (!(appctx->ctx.errors.flag & 1))
2370 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
2371 }
2372
2373 /* dump complete */
2374 return 1;
Willy Tarreau36b27362018-09-07 19:55:44 +02002375
2376 cant_send_unlock:
2377 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2378 cant_send:
Willy Tarreaudb398432018-11-15 11:08:52 +01002379 si_rx_room_blk(si);
Willy Tarreau36b27362018-09-07 19:55:44 +02002380 return 0;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002381}
2382
William Lallemanda6c5f332016-11-19 02:25:36 +01002383/* register cli keywords */
2384static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau15b9e682016-11-24 11:55:28 +01002385 { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
2386 { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002387 { { "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 +01002388 { { "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 +01002389 { { "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 +01002390 { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
Olivier Houchard614f8d72017-03-14 20:08:46 +01002391 { { "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 },
2392 { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
2393 { { "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 +02002394 { { "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 +01002395 {{},}
2396}};
2397
Willy Tarreau0108d902018-11-25 19:14:37 +01002398INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002399
2400/*
2401 * Local variables:
2402 * c-indent-level: 8
2403 * c-basic-offset: 8
2404 * End:
2405 */