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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 },
80#ifdef TPROXY
81 { "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{
92#ifdef CONFIG_HAP_LINUX_SPLICE
93 { "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 },
114 { "http-use-htx", PR_O2_USE_HTX, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
115 { 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
Willy Tarreauf79d9502014-03-15 07:22:35 +0100504/* This function inserts proxy <px> into the tree of known proxies. The proxy's
505 * name is used as the storing key so it must already have been initialized.
506 */
507void proxy_store_name(struct proxy *px)
508{
509 px->conf.by_name.key = px->id;
510 ebis_insert(&proxy_by_name, &px->conf.by_name);
511}
512
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200513/* Returns a pointer to the first proxy matching capabilities <cap> and id
514 * <id>. NULL is returned if no match is found. If <table> is non-zero, it
515 * only considers proxies having a table.
Willy Tarreaubc216c42011-08-02 11:25:54 +0200516 */
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200517struct proxy *proxy_find_by_id(int id, int cap, int table)
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200518{
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200519 struct eb32_node *n;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200520
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200521 for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) {
522 struct proxy *px = container_of(n, struct proxy, conf.id);
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100523
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200524 if (px->uuid != id)
525 break;
Alex Williams96532db2009-11-01 21:27:13 -0500526
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200527 if ((px->cap & cap) != cap)
528 continue;
Alex Williams96532db2009-11-01 21:27:13 -0500529
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200530 if (table && !px->table.size)
531 continue;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100532
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200533 return px;
534 }
535 return NULL;
536}
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100537
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200538/* Returns a pointer to the first proxy matching either name <name>, or id
539 * <name> if <name> begins with a '#'. NULL is returned if no match is found.
540 * If <table> is non-zero, it only considers proxies having a table.
541 */
542struct proxy *proxy_find_by_name(const char *name, int cap, int table)
543{
544 struct proxy *curproxy;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200545
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200546 if (*name == '#') {
547 curproxy = proxy_find_by_id(atoi(name + 1), cap, table);
548 if (curproxy)
Willy Tarreauc739aa82015-05-26 11:35:41 +0200549 return curproxy;
Alex Williams96532db2009-11-01 21:27:13 -0500550 }
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100551 else {
552 struct ebpt_node *node;
553
554 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
555 curproxy = container_of(node, struct proxy, conf.by_name);
Alex Williams96532db2009-11-01 21:27:13 -0500556
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100557 if (strcmp(curproxy->id, name) != 0)
558 break;
559
560 if ((curproxy->cap & cap) != cap)
561 continue;
562
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200563 if (table && !curproxy->table.size)
564 continue;
565
Willy Tarreauc739aa82015-05-26 11:35:41 +0200566 return curproxy;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100567 }
568 }
Willy Tarreauc739aa82015-05-26 11:35:41 +0200569 return NULL;
Alex Williams96532db2009-11-01 21:27:13 -0500570}
571
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200572/* Finds the best match for a proxy with capabilities <cap>, name <name> and id
573 * <id>. At most one of <id> or <name> may be different provided that <cap> is
574 * valid. Either <id> or <name> may be left unspecified (0). The purpose is to
575 * find a proxy based on some information from a previous configuration, across
576 * reloads or during information exchange between peers.
577 *
578 * Names are looked up first if present, then IDs are compared if present. In
579 * case of an inexact match whatever is forced in the configuration has
580 * precedence in the following order :
581 * - 1) forced ID (proves a renaming / change of proxy type)
582 * - 2) proxy name+type (may indicate a move if ID differs)
583 * - 3) automatic ID+type (may indicate a renaming)
584 *
585 * Depending on what is found, we can end up in the following situations :
586 *
587 * name id cap | possible causes
588 * -------------+-----------------
589 * -- -- -- | nothing found
590 * -- -- ok | nothing found
591 * -- ok -- | proxy deleted, ID points to next one
592 * -- ok ok | proxy renamed, or deleted with ID pointing to next one
593 * ok -- -- | proxy deleted, but other half with same name still here (before)
594 * ok -- ok | proxy's ID changed (proxy moved in the config file)
595 * ok ok -- | proxy deleted, but other half with same name still here (after)
596 * ok ok ok | perfect match
597 *
598 * Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits :
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200599 * - PR_FBM_MISMATCH_ID : proxy was found but ID differs
600 * (and ID was not zero)
601 * - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs
602 * (and name was not NULL)
603 * - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with
604 * the same name and/or id
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200605 *
606 * Only a valid proxy is returned. If capabilities do not match, NULL is
607 * returned. The caller can check <diff> to report detailed warnings / errors,
608 * and decide whether or not to use what was found.
609 */
610struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff)
611{
612 struct proxy *byname;
613 struct proxy *byid;
614
615 if (!name && !id)
616 return NULL;
617
618 if (diff)
619 *diff = 0;
620
621 byname = byid = NULL;
622
623 if (name) {
624 byname = proxy_find_by_name(name, cap, 0);
625 if (byname && (!id || byname->uuid == id))
626 return byname;
627 }
628
Joseph Herlant59dd2952018-11-15 11:46:55 -0800629 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200630 * - name not set
631 * - name set but not found
632 * - name found, but ID doesn't match.
633 */
634 if (id) {
635 byid = proxy_find_by_id(id, cap, 0);
636 if (byid) {
637 if (byname) {
638 /* id+type found, name+type found, but not all 3.
639 * ID wins only if forced, otherwise name wins.
640 */
641 if (byid->options & PR_O_FORCED_ID) {
642 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200643 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200644 return byid;
645 }
646 else {
647 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200648 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200649 return byname;
650 }
651 }
652
Joseph Herlant59dd2952018-11-15 11:46:55 -0800653 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200654 * - name not set
655 * - name set but not found
656 */
657 if (name && diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200658 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200659 return byid;
660 }
661
662 /* ID not found */
663 if (byname) {
664 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200665 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200666 return byname;
667 }
668 }
669
Joseph Herlant59dd2952018-11-15 11:46:55 -0800670 /* All remaining possibilities will lead to NULL. If we can report more
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200671 * detailed information to the caller about changed types and/or name,
672 * we'll do it. For example, we could detect that "listen foo" was
673 * split into "frontend foo_ft" and "backend foo_bk" if IDs are forced.
674 * - name not set, ID not found
675 * - name not found, ID not set
676 * - name not found, ID not found
677 */
678 if (!diff)
679 return NULL;
680
681 if (name) {
682 byname = proxy_find_by_name(name, 0, 0);
683 if (byname && (!id || byname->uuid == id))
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200684 *diff |= PR_FBM_MISMATCH_PROXYTYPE;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200685 }
686
687 if (id) {
688 byid = proxy_find_by_id(id, 0, 0);
689 if (byid) {
690 if (!name)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200691 *diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200692 else if (byid->options & PR_O_FORCED_ID)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200693 *diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200694 /* otherwise it's a different proxy that was returned */
695 }
696 }
697 return NULL;
698}
699
Willy Tarreaubaaee002006-06-26 02:48:02 +0200700/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100701 * This function finds a server with matching name within selected proxy.
702 * It also checks if there are more matching servers with
703 * requested name as this often leads into unexpected situations.
704 */
705
706struct server *findserver(const struct proxy *px, const char *name) {
707
708 struct server *cursrv, *target = NULL;
709
710 if (!px)
711 return NULL;
712
713 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
714 if (strcmp(cursrv->id, name))
715 continue;
716
717 if (!target) {
718 target = cursrv;
719 continue;
720 }
721
Christopher Faulet767a84b2017-11-24 16:50:31 +0100722 ha_alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
723 name, px->id);
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100724
725 return NULL;
726 }
727
728 return target;
729}
730
Willy Tarreauff01a212009-03-15 13:46:16 +0100731/* This function checks that the designated proxy has no http directives
732 * enabled. It will output a warning if there are, and will fix some of them.
733 * It returns the number of fatal errors encountered. This should be called
734 * at the end of the configuration parsing if the proxy is not in http mode.
735 * The <file> argument is used to construct the error message.
736 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200737int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100738{
739 if (curproxy->cookie_name != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100740 ha_warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
741 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100742 }
743 if (curproxy->rsp_exp != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100744 ha_warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
745 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100746 }
747 if (curproxy->req_exp != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100748 ha_warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
749 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100750 }
751 if (curproxy->monitor_uri != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100752 ha_warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
753 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100754 }
Willy Tarreauf3e49f92009-10-03 12:21:20 +0200755 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100756 curproxy->lbprm.algo &= ~BE_LB_ALGO;
757 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100758 ha_warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
759 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100760 }
Willy Tarreau17804162009-11-09 21:27:51 +0100761 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
762 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Christopher Faulet767a84b2017-11-24 16:50:31 +0100763 ha_warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
764 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
765 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau17804162009-11-09 21:27:51 +0100766 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200767 if (curproxy->conf.logformat_string == default_http_log_format ||
768 curproxy->conf.logformat_string == clf_http_log_format) {
769 /* Note: we don't change the directive's file:line number */
770 curproxy->conf.logformat_string = default_tcp_log_format;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100771 ha_warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
772 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
773 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau196729e2012-05-31 19:30:26 +0200774 }
775
Willy Tarreauff01a212009-03-15 13:46:16 +0100776 return 0;
777}
778
Willy Tarreau237250c2011-07-29 01:49:03 +0200779/* Perform the most basic initialization of a proxy :
780 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +0200781 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +0200782 */
783void init_new_proxy(struct proxy *p)
784{
785 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100786 p->obj_type = OBJ_TYPE_PROXY;
Patrick Hemmer0355dab2018-05-11 12:52:31 -0400787 p->pendconns = EB_ROOT;
Willy Tarreau237250c2011-07-29 01:49:03 +0200788 LIST_INIT(&p->acl);
789 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200790 LIST_INIT(&p->http_res_rules);
Willy Tarreau353bc9f2014-04-28 22:05:31 +0200791 LIST_INIT(&p->block_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200792 LIST_INIT(&p->redirect_rules);
793 LIST_INIT(&p->mon_fail_cond);
794 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200795 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200796 LIST_INIT(&p->persist_rules);
797 LIST_INIT(&p->sticking_rules);
798 LIST_INIT(&p->storersp_rules);
799 LIST_INIT(&p->tcp_req.inspect_rules);
800 LIST_INIT(&p->tcp_rep.inspect_rules);
801 LIST_INIT(&p->tcp_req.l4_rules);
Willy Tarreau620408f2016-10-21 16:37:51 +0200802 LIST_INIT(&p->tcp_req.l5_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200803 LIST_INIT(&p->req_add);
804 LIST_INIT(&p->rsp_add);
805 LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +0200806 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +0100807 LIST_INIT(&p->logformat);
Dragan Dosen0b85ece2015-09-25 19:17:44 +0200808 LIST_INIT(&p->logformat_sd);
William Lallemanda73203e2012-03-12 12:48:57 +0100809 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200810 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +0200811 LIST_INIT(&p->conf.listeners);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200812 LIST_INIT(&p->conf.args.list);
Baptiste Assmann5ecb77f2013-10-06 23:24:13 +0200813 LIST_INIT(&p->tcpcheck_rules);
Christopher Faulet443ea1a2016-02-04 13:40:26 +0100814 LIST_INIT(&p->filter_configs);
Willy Tarreau237250c2011-07-29 01:49:03 +0200815
816 /* Timeouts are defined as -1 */
817 proxy_reset_timeouts(p);
818 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +0200819
820 /* initial uuid is unassigned (-1) */
821 p->uuid = -1;
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200822
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100823 HA_SPIN_INIT(&p->lock);
Willy Tarreau237250c2011-07-29 01:49:03 +0200824}
825
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100826/*
Willy Tarreau2ff76222007-04-09 19:29:56 +0200827 * This function creates all proxy sockets. It should be done very early,
828 * typically before privileges are dropped. The sockets will be registered
829 * but not added to any fd_set, in order not to loose them across the fork().
Willy Tarreau562515c2011-07-25 08:11:52 +0200830 * The proxies also start in READY state because they all have their listeners
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200831 * bound.
Willy Tarreau2ff76222007-04-09 19:29:56 +0200832 *
833 * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
834 * Retryable errors will only be printed if <verbose> is not zero.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200835 */
836int start_proxies(int verbose)
837{
838 struct proxy *curproxy;
839 struct listener *listener;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100840 int lerr, err = ERR_NONE;
841 int pxerr;
842 char msg[100];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200843
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100844 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200845 if (curproxy->state != PR_STNEW)
846 continue; /* already initialized */
847
848 pxerr = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200849 list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
Willy Tarreaue6b98942007-10-29 01:09:36 +0100850 if (listener->state != LI_ASSIGNED)
851 continue; /* already started */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200852
Emeric Bruncf20bf12010-10-22 16:06:11 +0200853 lerr = listener->proto->bind(listener, msg, sizeof(msg));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200854
Willy Tarreaue6b98942007-10-29 01:09:36 +0100855 /* errors are reported if <verbose> is set or if they are fatal */
856 if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
857 if (lerr & ERR_ALERT)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100858 ha_alert("Starting %s %s: %s\n",
859 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaue6b98942007-10-29 01:09:36 +0100860 else if (lerr & ERR_WARN)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100861 ha_warning("Starting %s %s: %s\n",
862 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200863 }
864
Willy Tarreaue6b98942007-10-29 01:09:36 +0100865 err |= lerr;
866 if (lerr & (ERR_ABORT | ERR_FATAL)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200867 pxerr |= 1;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100868 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200869 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100870 else if (lerr & ERR_CODE) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200871 pxerr |= 1;
872 continue;
873 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200874 }
875
876 if (!pxerr) {
Willy Tarreau562515c2011-07-25 08:11:52 +0200877 curproxy->state = PR_STREADY;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200878 send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
879 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100880
881 if (err & ERR_ABORT)
882 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200883 }
884
885 return err;
886}
887
888
889/*
Willy Tarreau918ff602011-07-25 16:33:49 +0200890 * This is the proxy management task. It enables proxies when there are enough
Willy Tarreau87b09662015-04-03 00:22:06 +0200891 * free streams, or stops them when the table is full. It is designed to be
Willy Tarreau918ff602011-07-25 16:33:49 +0200892 * called as a task which is woken up upon stopping or when rate limiting must
893 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200894 */
Olivier Houchard9f6af332018-05-25 14:04:04 +0200895struct task *manage_proxy(struct task *t, void *context, unsigned short state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200896{
Olivier Houchard9f6af332018-05-25 14:04:04 +0200897 struct proxy *p = context;
Willy Tarreau918ff602011-07-25 16:33:49 +0200898 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +0100899 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200900
Willy Tarreau918ff602011-07-25 16:33:49 +0200901 /* We should periodically try to enable listeners waiting for a
902 * global resource here.
903 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200904
Willy Tarreau918ff602011-07-25 16:33:49 +0200905 /* first, let's check if we need to stop the proxy */
906 if (unlikely(stopping && p->state != PR_STSTOPPED)) {
907 int t;
908 t = tick_remain(now_ms, p->stop_time);
909 if (t == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100910 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
911 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau918ff602011-07-25 16:33:49 +0200912 send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
913 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
914 stop_proxy(p);
915 /* try to free more memory */
Willy Tarreaubafbe012017-11-24 17:34:44 +0100916 pool_gc(NULL);
Willy Tarreau918ff602011-07-25 16:33:49 +0200917 }
918 else {
919 next = tick_first(next, p->stop_time);
920 }
921 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200922
Willy Tarreau3a925c12013-09-04 17:54:01 +0200923 /* If the proxy holds a stick table, we need to purge all unused
924 * entries. These are all the ones in the table with ref_cnt == 0
925 * and all the ones in the pool used to allocate new entries. Any
Willy Tarreau87b09662015-04-03 00:22:06 +0200926 * entry attached to an existing stream waiting for a store will
Willy Tarreau3a925c12013-09-04 17:54:01 +0200927 * be in neither list. Any entry being dumped will have ref_cnt > 0.
928 * However we protect tables that are being synced to peers.
929 */
930 if (unlikely(stopping && p->state == PR_STSTOPPED && p->table.current)) {
931 if (!p->table.syncing) {
932 stktable_trash_oldest(&p->table, p->table.current);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100933 pool_gc(NULL);
Willy Tarreau3a925c12013-09-04 17:54:01 +0200934 }
935 if (p->table.current) {
936 /* some entries still remain, let's recheck in one second */
937 next = tick_first(next, tick_add(now_ms, 1000));
938 }
939 }
940
Willy Tarreau918ff602011-07-25 16:33:49 +0200941 /* the rest below is just for frontends */
942 if (!(p->cap & PR_CAP_FE))
943 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200944
Willy Tarreau918ff602011-07-25 16:33:49 +0200945 /* check the various reasons we may find to block the frontend */
946 if (unlikely(p->feconn >= p->maxconn)) {
947 if (p->state == PR_STREADY)
948 p->state = PR_STFULL;
949 goto out;
950 }
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100951
Willy Tarreau918ff602011-07-25 16:33:49 +0200952 /* OK we have no reason to block, so let's unblock if we were blocking */
953 if (p->state == PR_STFULL)
954 p->state = PR_STREADY;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100955
Willy Tarreau918ff602011-07-25 16:33:49 +0200956 if (p->fe_sps_lim &&
957 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
958 /* we're blocking because a limit was reached on the number of
959 * requests/s on the frontend. We want to re-check ASAP, which
960 * means in 1 ms before estimated expiration date, because the
961 * timer will have settled down.
962 */
963 next = tick_first(next, tick_add(now_ms, wait));
964 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200965 }
Willy Tarreau918ff602011-07-25 16:33:49 +0200966
967 /* The proxy is not limited so we can re-enable any waiting listener */
968 if (!LIST_ISEMPTY(&p->listener_queue))
969 dequeue_all_listeners(&p->listener_queue);
970 out:
971 t->expire = next;
972 task_queue(t);
973 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200974}
975
976
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100977static int proxy_parse_hard_stop_after(char **args, int section_type, struct proxy *curpx,
978 struct proxy *defpx, const char *file, int line,
979 char **err)
980{
981 const char *res;
982
983 if (!*args[1]) {
984 memprintf(err, "'%s' expects <time> as argument.\n", args[0]);
985 return -1;
986 }
987 res = parse_time_err(args[1], &global.hard_stop_after, TIME_UNIT_MS);
988 if (res) {
989 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
990 return -1;
991 }
992 return 0;
993}
994
Olivier Houchard9f6af332018-05-25 14:04:04 +0200995struct task *hard_stop(struct task *t, void *context, unsigned short state)
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100996{
997 struct proxy *p;
998 struct stream *s;
999
1000 if (killed) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001001 ha_warning("Some tasks resisted to hard-stop, exiting now.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001002 send_log(NULL, LOG_WARNING, "Some tasks resisted to hard-stop, exiting now.\n");
Joseph Herlant59dd2952018-11-15 11:46:55 -08001003 /* Do some cleanup and explicitly quit */
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001004 deinit();
1005 exit(0);
1006 }
1007
Christopher Faulet767a84b2017-11-24 16:50:31 +01001008 ha_warning("soft-stop running for too long, performing a hard-stop.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001009 send_log(NULL, LOG_WARNING, "soft-stop running for too long, performing a hard-stop.\n");
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001010 p = proxies_list;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001011 while (p) {
1012 if ((p->cap & PR_CAP_FE) && (p->feconn > 0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001013 ha_warning("Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1014 p->id, p->feconn);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001015 send_log(p, LOG_WARNING, "Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1016 p->id, p->feconn);
1017 }
1018 p = p->next;
1019 }
1020 list_for_each_entry(s, &streams, list) {
1021 stream_shutdown(s, SF_ERR_KILLED);
1022 }
1023
1024 killed = 1;
1025 t->expire = tick_add(now_ms, MS_TO_TICKS(1000));
1026 return t;
1027}
1028
Willy Tarreaubaaee002006-06-26 02:48:02 +02001029/*
1030 * this function disables health-check servers so that the process will quickly be ignored
1031 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
1032 * time will not be used since it would already not listen anymore to the socket.
1033 */
1034void soft_stop(void)
1035{
1036 struct proxy *p;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001037 struct peers *prs;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001038 struct task *task;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001039
1040 stopping = 1;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001041 if (tick_isset(global.hard_stop_after)) {
Emeric Brunc60def82017-09-27 14:59:38 +02001042 task = task_new(MAX_THREADS_MASK);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001043 if (task) {
1044 task->process = hard_stop;
1045 task_schedule(task, tick_add(now_ms, global.hard_stop_after));
1046 }
1047 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001048 ha_alert("out of memory trying to allocate the hard-stop task.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001049 }
1050 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001051 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001052 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001053 while (p) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001054 /* Zombie proxy, let's close the file descriptors */
1055 if (p->state == PR_STSTOPPED &&
1056 !LIST_ISEMPTY(&p->conf.listeners) &&
1057 LIST_ELEM(p->conf.listeners.n,
1058 struct listener *, by_fe)->state >= LI_ZOMBIE) {
1059 struct listener *l;
1060 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1061 if (l->state >= LI_ZOMBIE)
1062 close(l->fd);
1063 l->state = LI_INIT;
1064 }
1065 }
1066
Willy Tarreaubaaee002006-06-26 02:48:02 +02001067 if (p->state != PR_STSTOPPED) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001068 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 +02001069 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 +02001070 p->stop_time = tick_add(now_ms, p->grace);
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001071
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001072 /* Note: do not wake up stopped proxies' task nor their tables'
1073 * tasks as these ones might point to already released entries.
1074 */
1075 if (p->table.size && p->table.sync_task)
1076 task_wakeup(p->table.sync_task, TASK_WOKEN_MSG);
1077
1078 if (p->task)
1079 task_wakeup(p->task, TASK_WOKEN_MSG);
1080 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001081 p = p->next;
1082 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001083
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001084 prs = cfg_peers;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001085 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001086 if (prs->peers_fe)
1087 stop_proxy(prs->peers_fe);
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001088 prs = prs->next;
1089 }
Willy Tarreaud0807c32010-08-27 18:26:11 +02001090 /* signal zero is used to broadcast the "stopping" event */
1091 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001092}
1093
1094
Willy Tarreaube58c382011-07-24 18:28:10 +02001095/* Temporarily disables listening on all of the proxy's listeners. Upon
1096 * success, the proxy enters the PR_PAUSED state. If disabling at least one
1097 * listener returns an error, then the proxy state is set to PR_STERROR
Willy Tarreauce8fe252011-09-07 19:14:57 +02001098 * because we don't know how to resume from this. The function returns 0
1099 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001100 */
Willy Tarreauce8fe252011-09-07 19:14:57 +02001101int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001102{
1103 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +02001104
1105 if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
1106 p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
1107 return 1;
1108
Christopher Faulet767a84b2017-11-24 16:50:31 +01001109 ha_warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001110 send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
1111
Willy Tarreau4348fad2012-09-20 16:48:07 +02001112 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreaube58c382011-07-24 18:28:10 +02001113 if (!pause_listener(l))
Willy Tarreaubaaee002006-06-26 02:48:02 +02001114 p->state = PR_STERROR;
1115 }
Willy Tarreauce8fe252011-09-07 19:14:57 +02001116
1117 if (p->state == PR_STERROR) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001118 ha_warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001119 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
1120 return 0;
1121 }
1122
1123 p->state = PR_STPAUSED;
1124 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +02001125}
1126
Olivier Houchard1fc05162017-04-06 01:05:05 +02001127/* This function makes the proxy unusable, but keeps the listening sockets
1128 * opened, so that if any process requests them, we are able to serve them.
1129 * This should only be called early, before we started accepting requests.
1130 */
1131void zombify_proxy(struct proxy *p)
1132{
1133 struct listener *l;
1134 struct listener *first_to_listen = NULL;
1135
1136 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1137 enum li_state oldstate = l->state;
1138
1139 unbind_listener_no_close(l);
1140 if (l->state >= LI_ASSIGNED) {
1141 delete_listener(l);
Olivier Houchard1fc05162017-04-06 01:05:05 +02001142 }
1143 /*
1144 * Pretend we're still up and running so that the fd
1145 * will be sent if asked.
1146 */
1147 l->state = LI_ZOMBIE;
1148 if (!first_to_listen && oldstate >= LI_LISTEN)
1149 first_to_listen = l;
1150 }
1151 /* Quick hack : at stop time, to know we have to close the sockets
1152 * despite the proxy being marked as stopped, make the first listener
1153 * of the listener list an active one, so that we don't have to
1154 * parse the whole list to be sure.
1155 */
1156 if (first_to_listen && LIST_ELEM(p->conf.listeners.n,
1157 struct listener *, by_fe) != first_to_listen) {
1158 LIST_DEL(&l->by_fe);
1159 LIST_ADD(&p->conf.listeners, &l->by_fe);
1160 }
1161
1162 p->state = PR_STSTOPPED;
1163}
Willy Tarreauda250db2008-10-12 12:07:48 +02001164
1165/*
1166 * This function completely stops a proxy and releases its listeners. It has
1167 * to be called when going down in order to release the ports so that another
1168 * process may bind to them. It must also be called on disabled proxies at the
William Lallemandc59f9882018-11-16 16:57:21 +01001169 * end of start-up. If all listeners are closed, the proxy is set to the
Willy Tarreauda250db2008-10-12 12:07:48 +02001170 * PR_STSTOPPED state.
1171 */
1172void stop_proxy(struct proxy *p)
1173{
1174 struct listener *l;
William Lallemandc59f9882018-11-16 16:57:21 +01001175 int nostop = 0;
Willy Tarreauda250db2008-10-12 12:07:48 +02001176
Willy Tarreau4348fad2012-09-20 16:48:07 +02001177 list_for_each_entry(l, &p->conf.listeners, by_fe) {
William Lallemandc59f9882018-11-16 16:57:21 +01001178 if (l->options & LI_O_NOSTOP) {
1179 HA_ATOMIC_ADD(&unstoppable_jobs, 1);
1180 nostop = 1;
1181 continue;
1182 }
Willy Tarreauda250db2008-10-12 12:07:48 +02001183 unbind_listener(l);
1184 if (l->state >= LI_ASSIGNED) {
1185 delete_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001186 }
1187 }
William Lallemandc59f9882018-11-16 16:57:21 +01001188 if (!nostop)
1189 p->state = PR_STSTOPPED;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001190}
1191
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001192/* This function resumes listening on the specified proxy. It scans all of its
1193 * listeners and tries to enable them all. If any of them fails, the proxy is
1194 * put back to the paused state. It returns 1 upon success, or zero if an error
1195 * is encountered.
1196 */
1197int resume_proxy(struct proxy *p)
1198{
1199 struct listener *l;
1200 int fail;
1201
1202 if (p->state != PR_STPAUSED)
1203 return 1;
1204
Christopher Faulet767a84b2017-11-24 16:50:31 +01001205 ha_warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001206 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
1207
1208 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +02001209 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001210 if (!resume_listener(l)) {
1211 int port;
1212
1213 port = get_host_port(&l->addr);
1214 if (port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001215 ha_warning("Port %d busy while trying to enable %s %s.\n",
1216 port, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001217 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
1218 port, proxy_cap_str(p->cap), p->id);
1219 }
1220 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001221 ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
1222 l->luid, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001223 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
1224 l->luid, proxy_cap_str(p->cap), p->id);
1225 }
1226
1227 /* Another port might have been enabled. Let's stop everything. */
1228 fail = 1;
1229 break;
1230 }
1231 }
1232
1233 p->state = PR_STREADY;
1234 if (fail) {
1235 pause_proxy(p);
1236 return 0;
1237 }
1238 return 1;
1239}
1240
Willy Tarreaubaaee002006-06-26 02:48:02 +02001241/*
1242 * This function temporarily disables listening so that another new instance
1243 * can start listening. It is designed to be called upon reception of a
1244 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
1245 * the proxy, or a SIGTTIN can be sent to listen again.
1246 */
1247void pause_proxies(void)
1248{
1249 int err;
1250 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001251 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001252
1253 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001254 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001255 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001256 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +02001257 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001258 p = p->next;
1259 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001260
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001261 prs = cfg_peers;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001262 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001263 if (prs->peers_fe)
1264 err |= !pause_proxy(prs->peers_fe);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001265 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001266 }
1267
Willy Tarreaubaaee002006-06-26 02:48:02 +02001268 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001269 ha_warning("Some proxies refused to pause, performing soft stop now.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02001270 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
1271 soft_stop();
1272 }
1273}
1274
1275
1276/*
1277 * This function reactivates listening. This can be used after a call to
1278 * sig_pause(), for example when a new instance has failed starting up.
1279 * It is designed to be called upon reception of a SIGTTIN.
1280 */
Willy Tarreaube58c382011-07-24 18:28:10 +02001281void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001282{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001283 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001284 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001285 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001286
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001287 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001288 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001289 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001290 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001291 err |= !resume_proxy(p);
1292 p = p->next;
1293 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001294
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001295 prs = cfg_peers;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001296 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001297 if (prs->peers_fe)
1298 err |= !resume_proxy(prs->peers_fe);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001299 prs = prs->next;
1300 }
Willy Tarreaube58c382011-07-24 18:28:10 +02001301
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001302 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001303 ha_warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001304 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 +02001305 }
1306}
1307
Willy Tarreau87b09662015-04-03 00:22:06 +02001308/* Set current stream's backend to <be>. Nothing is done if the
1309 * stream already had a backend assigned, which is indicated by
Willy Tarreaue7dff022015-04-03 01:14:29 +02001310 * s->flags & SF_BE_ASSIGNED.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001311 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001312 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001313 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001314int stream_set_backend(struct stream *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001315{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001316 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001317 return 1;
Christopher Faulet41179042016-06-21 11:54:52 +02001318
1319 if (flt_set_stream_backend(s, be) < 0)
1320 return 0;
1321
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001322 s->be = be;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001323 HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
1324 HA_ATOMIC_ADD(&be->beconn, 1));
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001325 proxy_inc_be_ctr(be);
1326
Willy Tarreau3e451842019-02-01 15:06:09 +01001327 /* HTX/legacy must match */
1328 if ((s->sess->fe->options2 ^ be->options2) & PR_O2_USE_HTX)
1329 return 0;
1330
Willy Tarreau87b09662015-04-03 00:22:06 +02001331 /* assign new parameters to the stream from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +02001332 s->si[1].flags &= ~SI_FL_INDEP_STR;
1333 if (be->options2 & PR_O2_INDEPSTR)
1334 s->si[1].flags |= SI_FL_INDEP_STR;
1335
Hongbo Longe39683c2017-03-10 18:41:51 +01001336 if (tick_isset(be->timeout.serverfin))
1337 s->si[1].hcto = be->timeout.serverfin;
1338
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001339 /* We want to enable the backend-specific analysers except those which
1340 * were already run as part of the frontend/listener. Note that it would
1341 * be more reliable to store the list of analysers that have been run,
1342 * but what we do here is OK for now.
1343 */
Christopher Faulet70e2f272017-01-09 16:33:19 +01001344 s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001345
Willy Tarreau51aecc72009-07-12 09:47:04 +02001346 /* If the target backend requires HTTP processing, we have to allocate
Willy Tarreaueee5b512015-04-03 23:46:31 +02001347 * the HTTP transaction and hdr_idx if we did not have one.
Willy Tarreau51aecc72009-07-12 09:47:04 +02001348 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001349 if (unlikely(!s->txn && be->http_needed)) {
1350 if (unlikely(!http_alloc_txn(s)))
Willy Tarreau51aecc72009-07-12 09:47:04 +02001351 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +02001352
1353 /* and now initialize the HTTP transaction state */
1354 http_init_txn(s);
Willy Tarreau51aecc72009-07-12 09:47:04 +02001355 }
1356
Christopher Faulet309c6412015-12-02 09:57:32 +01001357 /* Be sure to filter request headers if the backend is an HTTP proxy and
1358 * if there are filters attached to the stream. */
1359 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +01001360 s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +01001361
Willy Tarreaueee5b512015-04-03 23:46:31 +02001362 if (s->txn) {
1363 if (be->options2 & PR_O2_RSPBUG_OK)
1364 s->txn->rsp.err_pos = -1; /* let buggy responses pass */
Willy Tarreau4e21ff92014-09-30 18:44:22 +02001365
Willy Tarreaueee5b512015-04-03 23:46:31 +02001366 /* If we chain to an HTTP backend running a different HTTP mode, we
1367 * have to re-adjust the desired keep-alive/close mode to accommodate
1368 * both the frontend's and the backend's modes.
1369 */
Willy Tarreaud0d8da92015-04-04 02:10:38 +02001370 if (strm_fe(s)->mode == PR_MODE_HTTP && be->mode == PR_MODE_HTTP &&
1371 ((strm_fe(s)->options & PR_O_HTTP_MODE) != (be->options & PR_O_HTTP_MODE)))
Willy Tarreaueee5b512015-04-03 23:46:31 +02001372 http_adjust_conn_mode(s, s->txn, &s->txn->req);
Willy Tarreau80a92c02014-03-12 10:41:13 +01001373
Willy Tarreaueee5b512015-04-03 23:46:31 +02001374 /* If an LB algorithm needs to access some pre-parsed body contents,
1375 * we must not start to forward anything until the connection is
1376 * confirmed otherwise we'll lose the pointer to these data and
1377 * prevent the hash from being doable again after a redispatch.
1378 */
1379 if (be->mode == PR_MODE_HTTP &&
1380 (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM))
1381 s->txn->req.flags |= HTTP_MSGF_WAIT_CONN;
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001382
1383 /* we may request to parse a request body */
1384 if ((be->options & PR_O_WREQ_BODY) &&
1385 (s->txn->req.body_len || (s->txn->req.flags & HTTP_MSGF_TE_CHNK)))
1386 s->req.analysers |= AN_REQ_HTTP_BODY;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001387 }
1388
1389 s->flags |= SF_BE_ASSIGNED;
Willy Tarreau96e31212011-05-30 18:10:30 +02001390 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001391 s->req.flags |= CF_NEVER_WAIT;
1392 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02001393 }
1394
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001395 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001396}
1397
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001398/* Capture a bad request or response and archive it in the proxy's structure.
1399 * It is relatively protocol-agnostic so it requires that a number of elements
1400 * are passed :
1401 * - <proxy> is the proxy where the error was detected and where the snapshot
1402 * needs to be stored
Joseph Herlant59dd2952018-11-15 11:46:55 -08001403 * - <is_back> indicates that the error happened when receiving the response
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001404 * - <other_end> is a pointer to the proxy on the other side when known
1405 * - <target> is the target of the connection, usually a server or a proxy
1406 * - <sess> is the session which experienced the error
1407 * - <ctx> may be NULL or should contain any info relevant to the protocol
1408 * - <buf> is the buffer containing the offending data
1409 * - <buf_ofs> is the position of this buffer's input data in the input
1410 * stream, starting at zero. It may be passed as zero if unknown.
1411 * - <buf_out> is the portion of <buf->data> which was already forwarded and
1412 * which precedes the buffer's input. The buffer's input starts at
1413 * buf->head + buf_out.
1414 * - <err_pos> is the pointer to the faulty byte in the buffer's input.
1415 * - <show> is the callback to use to display <ctx>. It may be NULL.
1416 */
1417void proxy_capture_error(struct proxy *proxy, int is_back,
1418 struct proxy *other_end, enum obj_type *target,
1419 const struct session *sess,
1420 const struct buffer *buf, long buf_ofs,
1421 unsigned int buf_out, unsigned int err_pos,
1422 const union error_snapshot_ctx *ctx,
1423 void (*show)(struct buffer *, const struct error_snapshot *))
1424{
1425 struct error_snapshot *es;
1426 unsigned int buf_len;
1427 int len1, len2;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001428 unsigned int ev_id;
1429
1430 ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
1431
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001432 buf_len = b_data(buf) - buf_out;
1433
1434 es = malloc(sizeof(*es) + buf_len);
Willy Tarreauc55015e2018-09-07 19:02:32 +02001435 if (!es)
1436 return;
1437
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001438 es->buf_len = buf_len;
1439 es->ev_id = ev_id;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001440
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001441 len1 = b_size(buf) - buf_len;
1442 if (len1 > buf_len)
1443 len1 = buf_len;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001444
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001445 if (len1) {
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001446 memcpy(es->buf, b_peek(buf, buf_out), len1);
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001447 len2 = buf_len - len1;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001448 if (len2)
1449 memcpy(es->buf + len1, b_orig(buf), len2);
1450 }
1451
1452 es->buf_err = err_pos;
1453 es->when = date; // user-visible date
1454 es->srv = objt_server(target);
1455 es->oe = other_end;
1456 if (objt_conn(sess->origin))
1457 es->src = __objt_conn(sess->origin)->addr.from;
1458 else
1459 memset(&es->src, 0, sizeof(es->src));
1460
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001461 es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
1462 es->buf_out = buf_out;
1463 es->buf_ofs = buf_ofs;
1464
1465 /* be sure to indicate the offset of the first IN byte */
1466 if (es->buf_ofs >= es->buf_len)
1467 es->buf_ofs -= es->buf_len;
1468 else
1469 es->buf_ofs = 0;
1470
1471 /* protocol-specific part now */
1472 if (ctx)
1473 es->ctx = *ctx;
1474 else
1475 memset(&es->ctx, 0, sizeof(es->ctx));
1476 es->show = show;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001477
1478 /* note: we still lock since we have to be certain that nobody is
1479 * dumping the output while we free.
1480 */
1481 HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
1482 if (is_back) {
1483 es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
1484 } else {
1485 es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
1486 }
1487 free(es);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001488 HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
1489}
1490
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001491/* Configure all proxies which lack a maxconn setting to use the global one by
1492 * default. This avoids the common mistake consisting in setting maxconn only
1493 * in the global section and discovering the hard way that it doesn't propagate
1494 * through the frontends. These values are also propagated through the various
1495 * targetted backends, whose fullconn is finally calculated if not yet set.
1496 */
1497void proxy_adjust_all_maxconn()
1498{
1499 struct proxy *curproxy;
1500 struct switching_rule *swrule1, *swrule2;
1501
1502 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1503 if (curproxy->state == PR_STSTOPPED)
1504 continue;
1505
1506 if (!(curproxy->cap & PR_CAP_FE))
1507 continue;
1508
1509 if (!curproxy->maxconn)
1510 curproxy->maxconn = global.maxconn;
1511
1512 /* update the target backend's fullconn count : default_backend */
1513 if (curproxy->defbe.be)
1514 curproxy->defbe.be->tot_fe_maxconn += curproxy->maxconn;
1515 else if ((curproxy->cap & PR_CAP_LISTEN) == PR_CAP_LISTEN)
1516 curproxy->tot_fe_maxconn += curproxy->maxconn;
1517
1518 list_for_each_entry(swrule1, &curproxy->switching_rules, list) {
1519 /* For each target of switching rules, we update their
1520 * tot_fe_maxconn, except if a previous rule points to
1521 * the same backend or to the default backend.
1522 */
1523 if (swrule1->be.backend != curproxy->defbe.be) {
1524 list_for_each_entry(swrule2, &curproxy->switching_rules, list) {
1525 if (swrule2 == swrule1) {
1526 swrule1->be.backend->tot_fe_maxconn += curproxy->maxconn;
1527 break;
1528 }
1529 else if (!swrule2->dynamic && swrule2->be.backend == swrule1->be.backend) {
1530 /* there are multiple refs of this backend */
1531 break;
1532 }
1533 }
1534 }
1535 }
1536 }
1537
1538 /* automatically compute fullconn if not set. We must not do it in the
1539 * loop above because cross-references are not yet fully resolved.
1540 */
1541 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1542 if (curproxy->state == PR_STSTOPPED)
1543 continue;
1544
1545 /* If <fullconn> is not set, let's set it to 10% of the sum of
1546 * the possible incoming frontend's maxconns.
1547 */
1548 if (!curproxy->fullconn && (curproxy->cap & PR_CAP_BE)) {
1549 /* we have the sum of the maxconns in <total>. We only
1550 * keep 10% of that sum to set the default fullconn, with
1551 * a hard minimum of 1 (to avoid a divide by zero).
1552 */
1553 curproxy->fullconn = (curproxy->tot_fe_maxconn + 9) / 10;
1554 if (!curproxy->fullconn)
1555 curproxy->fullconn = 1;
1556 }
1557 }
1558}
1559
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001560/* Config keywords below */
1561
Willy Tarreaudc13c112013-06-21 23:16:39 +02001562static struct cfg_kw_list cfg_kws = {ILH, {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001563 { CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001564 { CFG_LISTEN, "timeout", proxy_parse_timeout },
1565 { CFG_LISTEN, "clitimeout", proxy_parse_timeout },
1566 { CFG_LISTEN, "contimeout", proxy_parse_timeout },
1567 { CFG_LISTEN, "srvtimeout", proxy_parse_timeout },
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001568 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreauc35362a2014-04-25 13:58:37 +02001569 { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +02001570 { CFG_LISTEN, "declare", proxy_parse_declare },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001571 { 0, NULL, NULL },
1572}};
1573
Willy Tarreau0108d902018-11-25 19:14:37 +01001574INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
1575
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001576/* Expects to find a frontend named <arg> and returns it, otherwise displays various
1577 * adequate error messages and returns NULL. This function is designed to be used by
1578 * functions requiring a frontend on the CLI.
1579 */
1580struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
1581{
1582 struct proxy *px;
1583
1584 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001585 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001586 appctx->ctx.cli.msg = "A frontend name is expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001587 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001588 return NULL;
1589 }
1590
1591 px = proxy_fe_by_name(arg);
1592 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001593 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001594 appctx->ctx.cli.msg = "No such frontend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001595 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001596 return NULL;
1597 }
1598 return px;
1599}
1600
Olivier Houchard614f8d72017-03-14 20:08:46 +01001601/* Expects to find a backend named <arg> and returns it, otherwise displays various
1602 * adequate error messages and returns NULL. This function is designed to be used by
1603 * functions requiring a frontend on the CLI.
1604 */
1605struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
1606{
1607 struct proxy *px;
1608
1609 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001610 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001611 appctx->ctx.cli.msg = "A backend name is expected.\n";
1612 appctx->st0 = CLI_ST_PRINT;
1613 return NULL;
1614 }
1615
1616 px = proxy_be_by_name(arg);
1617 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001618 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001619 appctx->ctx.cli.msg = "No such backend.\n";
1620 appctx->st0 = CLI_ST_PRINT;
1621 return NULL;
1622 }
1623 return px;
1624}
1625
1626
William Lallemanda6c5f332016-11-19 02:25:36 +01001627/* parse a "show servers" CLI line, returns 0 if it wants to start the dump or
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001628 * 1 if it stops immediately. If an argument is specified, it will set the proxy
1629 * pointer into cli.p0 and its ID into cli.i0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001630 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001631static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemanda6c5f332016-11-19 02:25:36 +01001632{
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001633 struct proxy *px;
William Lallemanda6c5f332016-11-19 02:25:36 +01001634
1635 /* check if a backend name has been provided */
1636 if (*args[3]) {
1637 /* read server state from local file */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001638 px = proxy_be_by_name(args[3]);
William Lallemanda6c5f332016-11-19 02:25:36 +01001639
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001640 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001641 appctx->ctx.cli.severity = LOG_ERR;
William Lallemanda6c5f332016-11-19 02:25:36 +01001642 appctx->ctx.cli.msg = "Can't find backend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001643 appctx->st0 = CLI_ST_PRINT;
William Lallemanda6c5f332016-11-19 02:25:36 +01001644 return 1;
1645 }
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001646 appctx->ctx.cli.p0 = px;
1647 appctx->ctx.cli.i0 = px->uuid;
William Lallemanda6c5f332016-11-19 02:25:36 +01001648 }
1649 return 0;
1650}
1651
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001652/* dumps server state information into <buf> for all the servers found in backend cli.p0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001653 * These information are all the parameters which may change during HAProxy runtime.
1654 * By default, we only export to the last known server state file format.
1655 * These information can be used at next startup to recover same level of server state.
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001656 * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
1657 * pointer from cli.p1.
William Lallemanda6c5f332016-11-19 02:25:36 +01001658 */
Willy Tarreau83061a82018-07-13 11:56:34 +02001659static int dump_servers_state(struct stream_interface *si, struct buffer *buf)
William Lallemanda6c5f332016-11-19 02:25:36 +01001660{
1661 struct appctx *appctx = __objt_appctx(si->end);
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001662 struct proxy *px = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001663 struct server *srv;
1664 char srv_addr[INET6_ADDRSTRLEN + 1];
1665 time_t srv_time_since_last_change;
1666 int bk_f_forced_id, srv_f_forced_id;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001667 char *srvrecord;
William Lallemanda6c5f332016-11-19 02:25:36 +01001668
William Lallemanda6c5f332016-11-19 02:25:36 +01001669 /* we don't want to report any state if the backend is not enabled on this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001670 if (!(proc_mask(px->bind_proc) & pid_bit))
William Lallemanda6c5f332016-11-19 02:25:36 +01001671 return 1;
1672
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001673 if (!appctx->ctx.cli.p1)
1674 appctx->ctx.cli.p1 = px->srv;
William Lallemanda6c5f332016-11-19 02:25:36 +01001675
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001676 for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
1677 srv = appctx->ctx.cli.p1;
William Lallemanda6c5f332016-11-19 02:25:36 +01001678 srv_addr[0] = '\0';
1679
1680 switch (srv->addr.ss_family) {
1681 case AF_INET:
1682 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
1683 srv_addr, INET_ADDRSTRLEN + 1);
1684 break;
1685 case AF_INET6:
1686 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
1687 srv_addr, INET6_ADDRSTRLEN + 1);
1688 break;
Daniel Corbett9215ffa2018-05-19 19:43:24 -04001689 default:
1690 memcpy(srv_addr, "-\0", 2);
1691 break;
William Lallemanda6c5f332016-11-19 02:25:36 +01001692 }
1693 srv_time_since_last_change = now.tv_sec - srv->last_change;
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001694 bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001695 srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
1696
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001697 srvrecord = NULL;
1698 if (srv->srvrq && srv->srvrq->name)
1699 srvrecord = srv->srvrq->name;
1700
William Lallemanda6c5f332016-11-19 02:25:36 +01001701 chunk_appendf(buf,
1702 "%d %s "
1703 "%d %s %s "
1704 "%d %d %d %d %ld "
1705 "%d %d %d %d %d "
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001706 "%d %d %s %u %s"
William Lallemanda6c5f332016-11-19 02:25:36 +01001707 "\n",
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001708 px->uuid, px->id,
William Lallemanda6c5f332016-11-19 02:25:36 +01001709 srv->puid, srv->id, srv_addr,
Emeric Brun52a91d32017-08-31 14:41:55 +02001710 srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
William Lallemanda6c5f332016-11-19 02:25:36 +01001711 srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001712 bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
1713 srvrecord ? srvrecord : "-");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001714 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001715 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001716 return 0;
1717 }
1718 }
1719 return 1;
1720}
1721
1722/* Parses backend list or simply use backend name provided by the user to return
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001723 * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
1724 * non-null.
William Lallemanda6c5f332016-11-19 02:25:36 +01001725 */
1726static int cli_io_handler_servers_state(struct appctx *appctx)
1727{
1728 struct stream_interface *si = appctx->owner;
William Lallemanda6c5f332016-11-19 02:25:36 +01001729 struct proxy *curproxy;
1730
1731 chunk_reset(&trash);
1732
1733 if (appctx->st2 == STAT_ST_INIT) {
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001734 if (!appctx->ctx.cli.p0)
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001735 appctx->ctx.cli.p0 = proxies_list;
William Lallemanda6c5f332016-11-19 02:25:36 +01001736 appctx->st2 = STAT_ST_HEAD;
1737 }
1738
1739 if (appctx->st2 == STAT_ST_HEAD) {
1740 chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001741 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001742 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001743 return 0;
1744 }
1745 appctx->st2 = STAT_ST_INFO;
1746 }
1747
1748 /* STAT_ST_INFO */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001749 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1750 curproxy = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001751 /* servers are only in backends */
1752 if (curproxy->cap & PR_CAP_BE) {
1753 if (!dump_servers_state(si, &trash))
1754 return 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001755 }
1756 /* only the selected proxy is dumped */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001757 if (appctx->ctx.cli.i0)
William Lallemanda6c5f332016-11-19 02:25:36 +01001758 break;
1759 }
1760
1761 return 1;
1762}
1763
Willy Tarreau608ea592016-12-16 18:01:15 +01001764/* Parses backend list and simply report backend names. It keeps the proxy
1765 * pointer in cli.p0.
1766 */
William Lallemand933efcd2016-11-22 12:34:16 +01001767static int cli_io_handler_show_backend(struct appctx *appctx)
1768{
William Lallemand933efcd2016-11-22 12:34:16 +01001769 struct stream_interface *si = appctx->owner;
1770 struct proxy *curproxy;
1771
1772 chunk_reset(&trash);
1773
Willy Tarreau608ea592016-12-16 18:01:15 +01001774 if (!appctx->ctx.cli.p0) {
William Lallemand933efcd2016-11-22 12:34:16 +01001775 chunk_printf(&trash, "# name\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001776 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001777 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001778 return 0;
1779 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001780 appctx->ctx.cli.p0 = proxies_list;
William Lallemand933efcd2016-11-22 12:34:16 +01001781 }
1782
Willy Tarreau608ea592016-12-16 18:01:15 +01001783 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1784 curproxy = appctx->ctx.cli.p0;
William Lallemand933efcd2016-11-22 12:34:16 +01001785
1786 /* looking for backends only */
1787 if (!(curproxy->cap & PR_CAP_BE))
1788 continue;
1789
1790 /* we don't want to list a backend which is bound to this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001791 if (!(proc_mask(curproxy->bind_proc) & pid_bit))
William Lallemand933efcd2016-11-22 12:34:16 +01001792 continue;
1793
1794 chunk_appendf(&trash, "%s\n", curproxy->id);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001795 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001796 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001797 return 0;
1798 }
1799 }
1800
1801 return 1;
1802}
William Lallemanda6c5f332016-11-19 02:25:36 +01001803
Willy Tarreaua275a372018-08-21 14:50:44 +02001804/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
1805 *
1806 * Grabs the proxy lock and each server's lock.
1807 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001808static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001809{
1810 struct proxy *px;
1811 struct server *s;
1812
1813 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1814 return 1;
1815
1816 px = cli_find_backend(appctx, args[3]);
1817 if (!px)
1818 return 1;
1819
Willy Tarreaua275a372018-08-21 14:50:44 +02001820 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1821
Olivier Houchard614f8d72017-03-14 20:08:46 +01001822 px->ck_opts |= PR_CK_DYNAMIC;
1823
Willy Tarreaua275a372018-08-21 14:50:44 +02001824 for (s = px->srv; s != NULL; s = s->next) {
1825 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001826 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001827 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1828 }
1829
1830 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001831
1832 return 1;
1833}
1834
Willy Tarreaua275a372018-08-21 14:50:44 +02001835/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
1836 *
1837 * Grabs the proxy lock and each server's lock.
1838 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001839static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001840{
1841 struct proxy *px;
1842 struct server *s;
1843
1844 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1845 return 1;
1846
1847 px = cli_find_backend(appctx, args[3]);
1848 if (!px)
1849 return 1;
1850
Willy Tarreaua275a372018-08-21 14:50:44 +02001851 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1852
Olivier Houchard614f8d72017-03-14 20:08:46 +01001853 px->ck_opts &= ~PR_CK_DYNAMIC;
1854
1855 for (s = px->srv; s != NULL; s = s->next) {
Willy Tarreaua275a372018-08-21 14:50:44 +02001856 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001857 if (!(s->flags & SRV_F_COOKIESET)) {
1858 free(s->cookie);
1859 s->cookie = NULL;
1860 }
Willy Tarreaua275a372018-08-21 14:50:44 +02001861 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001862 }
1863
Willy Tarreaua275a372018-08-21 14:50:44 +02001864 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
1865
Olivier Houchard614f8d72017-03-14 20:08:46 +01001866 return 1;
1867}
1868
Willy Tarreaua275a372018-08-21 14:50:44 +02001869/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
1870 *
1871 * Grabs the proxy lock and each server's lock.
1872 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001873static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001874{
1875 struct proxy *px;
1876 struct server *s;
1877 char *newkey;
1878
1879 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1880 return 1;
1881
1882 px = cli_find_backend(appctx, args[3]);
1883 if (!px)
1884 return 1;
1885
1886 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001887 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001888 appctx->ctx.cli.msg = "String value expected.\n";
1889 appctx->st0 = CLI_ST_PRINT;
1890 return 1;
1891 }
1892
1893 newkey = strdup(args[4]);
1894 if (!newkey) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001895 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001896 appctx->ctx.cli.msg = "Failed to allocate memory.\n";
1897 appctx->st0 = CLI_ST_PRINT;
1898 return 1;
1899 }
Willy Tarreaua275a372018-08-21 14:50:44 +02001900
1901 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1902
Olivier Houchard614f8d72017-03-14 20:08:46 +01001903 free(px->dyncookie_key);
1904 px->dyncookie_key = newkey;
1905
Willy Tarreaua275a372018-08-21 14:50:44 +02001906 for (s = px->srv; s != NULL; s = s->next) {
1907 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001908 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001909 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1910 }
1911
1912 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001913
1914 return 1;
1915}
1916
Willy Tarreaua275a372018-08-21 14:50:44 +02001917/* Parses the "set maxconn frontend" directive, it always returns 1.
1918 *
1919 * Grabs the proxy lock.
1920 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001921static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauc429a1f2016-11-23 16:22:04 +01001922{
1923 struct proxy *px;
1924 struct listener *l;
1925 int v;
1926
1927 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1928 return 1;
1929
1930 px = cli_find_frontend(appctx, args[3]);
1931 if (!px)
1932 return 1;
1933
1934 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001935 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01001936 appctx->ctx.cli.msg = "Integer value expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001937 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01001938 return 1;
1939 }
1940
1941 v = atoi(args[4]);
1942 if (v < 0) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001943 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01001944 appctx->ctx.cli.msg = "Value out of range.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001945 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01001946 return 1;
1947 }
1948
1949 /* OK, the value is fine, so we assign it to the proxy and to all of
1950 * its listeners. The blocked ones will be dequeued.
1951 */
Willy Tarreaua275a372018-08-21 14:50:44 +02001952 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1953
Willy Tarreauc429a1f2016-11-23 16:22:04 +01001954 px->maxconn = v;
1955 list_for_each_entry(l, &px->conf.listeners, by_fe) {
Willy Tarreauc429a1f2016-11-23 16:22:04 +01001956 if (l->state == LI_FULL)
1957 resume_listener(l);
1958 }
1959
1960 if (px->maxconn > px->feconn && !LIST_ISEMPTY(&px->listener_queue))
1961 dequeue_all_listeners(&px->listener_queue);
1962
Willy Tarreaua275a372018-08-21 14:50:44 +02001963 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
1964
Willy Tarreauc429a1f2016-11-23 16:22:04 +01001965 return 1;
1966}
1967
Willy Tarreaua275a372018-08-21 14:50:44 +02001968/* Parses the "shutdown frontend" directive, it always returns 1.
1969 *
1970 * Grabs the proxy lock.
1971 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001972static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau5212d7f2016-11-24 11:13:06 +01001973{
1974 struct proxy *px;
1975
1976 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1977 return 1;
1978
1979 px = cli_find_frontend(appctx, args[2]);
1980 if (!px)
1981 return 1;
1982
1983 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001984 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01001985 appctx->ctx.cli.msg = "Frontend was already shut down.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001986 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01001987 return 1;
1988 }
1989
Christopher Faulet767a84b2017-11-24 16:50:31 +01001990 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
1991 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01001992 send_log(px, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
1993 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreaua275a372018-08-21 14:50:44 +02001994
1995 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01001996 stop_proxy(px);
Willy Tarreaua275a372018-08-21 14:50:44 +02001997 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
1998
Willy Tarreau5212d7f2016-11-24 11:13:06 +01001999 return 1;
2000}
2001
Willy Tarreaua275a372018-08-21 14:50:44 +02002002/* Parses the "disable frontend" directive, it always returns 1.
2003 *
2004 * Grabs the proxy lock.
2005 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002006static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002007{
2008 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002009 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002010
2011 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2012 return 1;
2013
2014 px = cli_find_frontend(appctx, args[2]);
2015 if (!px)
2016 return 1;
2017
2018 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002019 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002020 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot disable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002021 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002022 return 1;
2023 }
2024
2025 if (px->state == PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002026 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002027 appctx->ctx.cli.msg = "Frontend is already disabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002028 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002029 return 1;
2030 }
2031
Willy Tarreaua275a372018-08-21 14:50:44 +02002032 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2033 ret = pause_proxy(px);
2034 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2035
2036 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002037 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002038 appctx->ctx.cli.msg = "Failed to pause frontend, check logs for precise cause.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002039 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002040 return 1;
2041 }
2042 return 1;
2043}
2044
Willy Tarreaua275a372018-08-21 14:50:44 +02002045/* Parses the "enable frontend" directive, it always returns 1.
2046 *
2047 * Grabs the proxy lock.
2048 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002049static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002050{
2051 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002052 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002053
2054 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2055 return 1;
2056
2057 px = cli_find_frontend(appctx, args[2]);
2058 if (!px)
2059 return 1;
2060
2061 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002062 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002063 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot enable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002064 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002065 return 1;
2066 }
2067
2068 if (px->state != PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002069 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002070 appctx->ctx.cli.msg = "Frontend is already enabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002071 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002072 return 1;
2073 }
2074
Willy Tarreaua275a372018-08-21 14:50:44 +02002075 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2076 ret = resume_proxy(px);
2077 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2078
2079 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002080 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002081 appctx->ctx.cli.msg = "Failed to resume frontend, check logs for precise cause (port conflict?).\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002082 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002083 return 1;
2084 }
2085 return 1;
2086}
2087
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002088/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
2089 * now.
2090 */
2091static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
2092{
2093 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2094 return 1;
2095
2096 if (*args[2]) {
2097 struct proxy *px;
2098
2099 px = proxy_find_by_name(args[2], 0, 0);
2100 if (px)
2101 appctx->ctx.errors.iid = px->uuid;
2102 else
2103 appctx->ctx.errors.iid = atoi(args[2]);
2104
2105 if (!appctx->ctx.errors.iid) {
2106 appctx->ctx.cli.severity = LOG_ERR;
2107 appctx->ctx.cli.msg = "No such proxy.\n";
2108 appctx->st0 = CLI_ST_PRINT;
2109 return 1;
2110 }
2111 }
2112 else
2113 appctx->ctx.errors.iid = -1; // dump all proxies
2114
2115 appctx->ctx.errors.flag = 0;
2116 if (strcmp(args[3], "request") == 0)
2117 appctx->ctx.errors.flag |= 4; // ignore response
2118 else if (strcmp(args[3], "response") == 0)
2119 appctx->ctx.errors.flag |= 2; // ignore request
2120 appctx->ctx.errors.px = NULL;
2121 return 0;
2122}
2123
2124/* This function dumps all captured errors onto the stream interface's
2125 * read buffer. It returns 0 if the output buffer is full and it needs
2126 * to be called again, otherwise non-zero.
2127 */
2128static int cli_io_handler_show_errors(struct appctx *appctx)
2129{
2130 struct stream_interface *si = appctx->owner;
2131 extern const char *monthname[12];
2132
2133 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
2134 return 1;
2135
2136 chunk_reset(&trash);
2137
2138 if (!appctx->ctx.errors.px) {
2139 /* the function had not been called yet, let's prepare the
2140 * buffer for a response.
2141 */
2142 struct tm tm;
2143
2144 get_localtime(date.tv_sec, &tm);
2145 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
2146 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2147 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
2148 error_snapshot_id);
2149
Willy Tarreau36b27362018-09-07 19:55:44 +02002150 if (ci_putchk(si_ic(si), &trash) == -1)
2151 goto cant_send;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002152
2153 appctx->ctx.errors.px = proxies_list;
2154 appctx->ctx.errors.bol = 0;
2155 appctx->ctx.errors.ptr = -1;
2156 }
2157
2158 /* we have two inner loops here, one for the proxy, the other one for
2159 * the buffer.
2160 */
2161 while (appctx->ctx.errors.px) {
2162 struct error_snapshot *es;
2163
Willy Tarreau36b27362018-09-07 19:55:44 +02002164 HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2165
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002166 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002167 es = appctx->ctx.errors.px->invalid_req;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002168 if (appctx->ctx.errors.flag & 2) // skip req
2169 goto next;
2170 }
2171 else {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002172 es = appctx->ctx.errors.px->invalid_rep;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002173 if (appctx->ctx.errors.flag & 4) // skip resp
2174 goto next;
2175 }
2176
Willy Tarreauc55015e2018-09-07 19:02:32 +02002177 if (!es)
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002178 goto next;
2179
2180 if (appctx->ctx.errors.iid >= 0 &&
2181 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
2182 es->oe->uuid != appctx->ctx.errors.iid)
2183 goto next;
2184
2185 if (appctx->ctx.errors.ptr < 0) {
2186 /* just print headers now */
2187
2188 char pn[INET6_ADDRSTRLEN];
2189 struct tm tm;
2190 int port;
2191
2192 get_localtime(es->when.tv_sec, &tm);
2193 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
2194 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2195 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
2196
2197 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
2198 case AF_INET:
2199 case AF_INET6:
2200 port = get_host_port(&es->src);
2201 break;
2202 default:
2203 port = 0;
2204 }
2205
2206 switch (appctx->ctx.errors.flag & 1) {
2207 case 0:
2208 chunk_appendf(&trash,
2209 " frontend %s (#%d): invalid request\n"
2210 " backend %s (#%d)",
2211 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2212 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
2213 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
2214 break;
2215 case 1:
2216 chunk_appendf(&trash,
2217 " backend %s (#%d): invalid response\n"
2218 " frontend %s (#%d)",
2219 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2220 es->oe->id, es->oe->uuid);
2221 break;
2222 }
2223
2224 chunk_appendf(&trash,
2225 ", server %s (#%d), event #%u, src %s:%d\n"
2226 " buffer starts at %llu (including %u out), %u free,\n"
2227 " len %u, wraps at %u, error at position %u\n",
2228 es->srv ? es->srv->id : "<NONE>",
2229 es->srv ? es->srv->puid : -1,
2230 es->ev_id, pn, port,
2231 es->buf_ofs, es->buf_out,
2232 global.tune.bufsize - es->buf_out - es->buf_len,
2233 es->buf_len, es->buf_wrap, es->buf_err);
2234
2235 if (es->show)
2236 es->show(&trash, es);
2237
2238 chunk_appendf(&trash, " \n");
2239
Willy Tarreau36b27362018-09-07 19:55:44 +02002240 if (ci_putchk(si_ic(si), &trash) == -1)
2241 goto cant_send_unlock;
2242
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002243 appctx->ctx.errors.ptr = 0;
2244 appctx->ctx.errors.ev_id = es->ev_id;
2245 }
2246
2247 if (appctx->ctx.errors.ev_id != es->ev_id) {
2248 /* the snapshot changed while we were dumping it */
2249 chunk_appendf(&trash,
2250 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau36b27362018-09-07 19:55:44 +02002251 if (ci_putchk(si_ic(si), &trash) == -1)
2252 goto cant_send_unlock;
2253
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002254 goto next;
2255 }
2256
2257 /* OK, ptr >= 0, so we have to dump the current line */
Willy Tarreau4bc7d902018-09-07 20:07:17 +02002258 while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002259 int newptr;
2260 int newline;
2261
2262 newline = appctx->ctx.errors.bol;
2263 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
2264 if (newptr == appctx->ctx.errors.ptr)
Willy Tarreau36b27362018-09-07 19:55:44 +02002265 goto cant_send_unlock;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002266
Willy Tarreau36b27362018-09-07 19:55:44 +02002267 if (ci_putchk(si_ic(si), &trash) == -1)
2268 goto cant_send_unlock;
2269
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002270 appctx->ctx.errors.ptr = newptr;
2271 appctx->ctx.errors.bol = newline;
2272 };
2273 next:
Willy Tarreau36b27362018-09-07 19:55:44 +02002274 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002275 appctx->ctx.errors.bol = 0;
2276 appctx->ctx.errors.ptr = -1;
2277 appctx->ctx.errors.flag ^= 1;
2278 if (!(appctx->ctx.errors.flag & 1))
2279 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
2280 }
2281
2282 /* dump complete */
2283 return 1;
Willy Tarreau36b27362018-09-07 19:55:44 +02002284
2285 cant_send_unlock:
2286 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2287 cant_send:
Willy Tarreaudb398432018-11-15 11:08:52 +01002288 si_rx_room_blk(si);
Willy Tarreau36b27362018-09-07 19:55:44 +02002289 return 0;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002290}
2291
William Lallemanda6c5f332016-11-19 02:25:36 +01002292/* register cli keywords */
2293static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau15b9e682016-11-24 11:55:28 +01002294 { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
2295 { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002296 { { "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 +01002297 { { "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 +01002298 { { "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 +01002299 { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
Olivier Houchard614f8d72017-03-14 20:08:46 +01002300 { { "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 },
2301 { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
2302 { { "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 +02002303 { { "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 +01002304 {{},}
2305}};
2306
Willy Tarreau0108d902018-11-25 19:14:37 +01002307INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002308
2309/*
2310 * Local variables:
2311 * c-indent-level: 8
2312 * c-basic-offset: 8
2313 * End:
2314 */