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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * Proxy variables and functions.
3 *
Willy Tarreau3a7d2072009-03-05 23:48:25 +01004 * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <fcntl.h>
14#include <unistd.h>
Willy Tarreauc8f24f82007-11-30 18:38:35 +010015#include <string.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020016#include <sys/types.h>
17#include <sys/socket.h>
18#include <sys/stat.h>
19
Willy Tarreau2dd0d472006-06-29 17:53:05 +020020#include <common/defaults.h>
Willy Tarreau9de1bbd2008-07-09 20:34:27 +020021#include <common/cfgparse.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020022#include <common/compat.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020023#include <common/config.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010024#include <common/errors.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010025#include <common/initcall.h>
Willy Tarreau4d2d0982007-05-14 00:39:29 +020026#include <common/memory.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020027#include <common/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020028
Willy Tarreaucfd837f2014-03-15 07:43:51 +010029#include <eb32tree.h>
30#include <ebistree.h>
31
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +020032#include <types/capture.h>
Willy Tarreau960f2cb2016-11-24 12:02:29 +010033#include <types/cli.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020034#include <types/global.h>
Willy Tarreau3fdb3662012-11-12 00:42:33 +010035#include <types/obj_type.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020036#include <types/peers.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010037#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020038
William Lallemanda6c5f332016-11-19 02:25:36 +010039#include <proto/applet.h>
40#include <proto/cli.h>
Alexandre Cassen87ea5482007-10-11 20:48:58 +020041#include <proto/backend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020042#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020043#include <proto/filters.h>
Willy Tarreau51aecc72009-07-12 09:47:04 +020044#include <proto/hdr_idx.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020045#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020046#include <proto/log.h>
Willy Tarreaue6b98942007-10-29 01:09:36 +010047#include <proto/proto_tcp.h>
Willy Tarreau39e4f622010-05-31 17:01:36 +020048#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020049#include <proto/proxy.h>
Olivier Houchard614f8d72017-03-14 20:08:46 +010050#include <proto/server.h>
Willy Tarreaud0807c32010-08-27 18:26:11 +020051#include <proto/signal.h>
Willy Tarreaufb0afa72015-04-03 14:46:27 +020052#include <proto/stream.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010053#include <proto/stream_interface.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020054#include <proto/task.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020055
56
Willy Tarreau918ff602011-07-25 16:33:49 +020057int listeners; /* # of proxy listeners, set by cfgparse */
Olivier Houchardfbc74e82017-11-24 16:54:05 +010058struct proxy *proxies_list = NULL; /* list of all existing proxies */
Willy Tarreau53fb4ae2009-10-04 23:04:08 +020059struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
Willy Tarreauf79d9502014-03-15 07:22:35 +010060struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */
Willy Tarreau10479e42010-12-12 14:00:34 +010061unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
Willy Tarreaubaaee002006-06-26 02:48:02 +020062
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010063/* proxy->options */
64const struct cfg_opt cfg_opts[] =
65{
66 { "abortonclose", PR_O_ABRT_CLOSE, PR_CAP_BE, 0, 0 },
67 { "allbackups", PR_O_USE_ALL_BK, PR_CAP_BE, 0, 0 },
68 { "checkcache", PR_O_CHK_CACHE, PR_CAP_BE, 0, PR_MODE_HTTP },
69 { "clitcpka", PR_O_TCP_CLI_KA, PR_CAP_FE, 0, 0 },
70 { "contstats", PR_O_CONTSTATS, PR_CAP_FE, 0, 0 },
71 { "dontlognull", PR_O_NULLNOLOG, PR_CAP_FE, 0, 0 },
72 { "http_proxy", PR_O_HTTP_PROXY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
73 { "http-buffer-request", PR_O_WREQ_BODY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
74 { "http-ignore-probes", PR_O_IGNORE_PRB, PR_CAP_FE, 0, PR_MODE_HTTP },
75 { "prefer-last-server", PR_O_PREF_LAST, PR_CAP_BE, 0, PR_MODE_HTTP },
76 { "logasap", PR_O_LOGASAP, PR_CAP_FE, 0, 0 },
77 { "nolinger", PR_O_TCP_NOLING, PR_CAP_FE | PR_CAP_BE, 0, 0 },
78 { "persist", PR_O_PERSIST, PR_CAP_BE, 0, 0 },
79 { "srvtcpka", PR_O_TCP_SRV_KA, PR_CAP_BE, 0, 0 },
Willy Tarreaue5733232019-05-22 19:24:06 +020080#ifdef USE_TPROXY
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010081 { "transparent", PR_O_TRANSP, PR_CAP_BE, 0, 0 },
82#else
83 { "transparent", 0, 0, 0, 0 },
84#endif
85
86 { NULL, 0, 0, 0, 0 }
87};
88
89/* proxy->options2 */
90const struct cfg_opt cfg_opts2[] =
91{
Willy Tarreaue5733232019-05-22 19:24:06 +020092#ifdef USE_LINUX_SPLICE
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010093 { "splice-request", PR_O2_SPLIC_REQ, PR_CAP_FE|PR_CAP_BE, 0, 0 },
94 { "splice-response", PR_O2_SPLIC_RTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
95 { "splice-auto", PR_O2_SPLIC_AUT, PR_CAP_FE|PR_CAP_BE, 0, 0 },
96#else
97 { "splice-request", 0, 0, 0, 0 },
98 { "splice-response", 0, 0, 0, 0 },
99 { "splice-auto", 0, 0, 0, 0 },
100#endif
101 { "accept-invalid-http-request", PR_O2_REQBUG_OK, PR_CAP_FE, 0, PR_MODE_HTTP },
102 { "accept-invalid-http-response", PR_O2_RSPBUG_OK, PR_CAP_BE, 0, PR_MODE_HTTP },
103 { "dontlog-normal", PR_O2_NOLOGNORM, PR_CAP_FE, 0, 0 },
104 { "log-separate-errors", PR_O2_LOGERRORS, PR_CAP_FE, 0, 0 },
105 { "log-health-checks", PR_O2_LOGHCHKS, PR_CAP_BE, 0, 0 },
106 { "socket-stats", PR_O2_SOCKSTAT, PR_CAP_FE, 0, 0 },
107 { "tcp-smart-accept", PR_O2_SMARTACC, PR_CAP_FE, 0, 0 },
108 { "tcp-smart-connect", PR_O2_SMARTCON, PR_CAP_BE, 0, 0 },
109 { "independant-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
110 { "independent-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
111 { "http-use-proxy-header", PR_O2_USE_PXHDR, PR_CAP_FE, 0, PR_MODE_HTTP },
112 { "http-pretend-keepalive", PR_O2_FAKE_KA, PR_CAP_BE, 0, PR_MODE_HTTP },
113 { "http-no-delay", PR_O2_NODELAY, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Fauleteb709802019-04-11 22:04:08 +0200114 { "http-use-htx", PR_O2_USE_HTX, PR_CAP_FE|PR_CAP_BE, 0, 0 },
Christopher Fauleta99ff4d2019-07-22 16:18:24 +0200115 {"h1-case-adjust-bogus-client", PR_O2_H1_ADJ_BUGCLI, PR_CAP_FE, 0, PR_MODE_HTTP },
116 {"h1-case-adjust-bogus-server", PR_O2_H1_ADJ_BUGSRV, PR_CAP_BE, 0, PR_MODE_HTTP },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100117 { NULL, 0, 0, 0 }
118};
119
Willy Tarreau977b8e42006-12-29 14:19:17 +0100120/*
Willy Tarreau816eb542007-11-04 07:04:43 +0100121 * This function returns a string containing a name describing capabilities to
122 * report comprehensible error messages. Specifically, it will return the words
Christopher Faulet898566e2016-10-26 11:06:28 +0200123 * "frontend", "backend" when appropriate, or "proxy" for all other
Willy Tarreau816eb542007-11-04 07:04:43 +0100124 * cases including the proxies declared in "listen" mode.
Willy Tarreau977b8e42006-12-29 14:19:17 +0100125 */
Willy Tarreau816eb542007-11-04 07:04:43 +0100126const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +0100127{
Willy Tarreau816eb542007-11-04 07:04:43 +0100128 if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
129 if (cap & PR_CAP_FE)
130 return "frontend";
131 else if (cap & PR_CAP_BE)
132 return "backend";
Willy Tarreau816eb542007-11-04 07:04:43 +0100133 }
134 return "proxy";
Willy Tarreau977b8e42006-12-29 14:19:17 +0100135}
136
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100137/*
138 * This function returns a string containing the mode of the proxy in a format
139 * suitable for error messages.
140 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100141const char *proxy_mode_str(int mode) {
142
143 if (mode == PR_MODE_TCP)
144 return "tcp";
145 else if (mode == PR_MODE_HTTP)
146 return "http";
147 else if (mode == PR_MODE_HEALTH)
148 return "health";
William Lallemandcf62f7e2018-10-26 14:47:40 +0200149 else if (mode == PR_MODE_CLI)
150 return "cli";
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100151 else
152 return "unknown";
153}
154
Willy Tarreauf3950172009-10-10 18:35:51 +0200155/*
156 * This function scans the list of backends and servers to retrieve the first
157 * backend and the first server with the given names, and sets them in both
158 * parameters. It returns zero if either is not found, or non-zero and sets
159 * the ones it did not found to NULL. If a NULL pointer is passed for the
160 * backend, only the pointer to the server will be updated.
161 */
162int get_backend_server(const char *bk_name, const char *sv_name,
163 struct proxy **bk, struct server **sv)
164{
165 struct proxy *p;
166 struct server *s;
Willy Tarreau7ecc4202014-03-15 07:57:11 +0100167 int sid;
Willy Tarreauf3950172009-10-10 18:35:51 +0200168
169 *sv = NULL;
170
Willy Tarreau050536d2012-10-04 08:47:34 +0200171 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200172 if (*sv_name == '#')
173 sid = atoi(sv_name + 1);
174
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200175 p = proxy_be_by_name(bk_name);
Willy Tarreauf3950172009-10-10 18:35:51 +0200176 if (bk)
177 *bk = p;
178 if (!p)
179 return 0;
180
181 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100182 if ((sid >= 0 && s->puid == sid) ||
183 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200184 break;
185 *sv = s;
186 if (!s)
187 return 0;
188 return 1;
189}
190
Willy Tarreaue219db72007-12-03 01:30:13 +0100191/* This function parses a "timeout" statement in a proxy section. It returns
192 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200193 * return zero, it will write an error or warning message into a preallocated
194 * buffer returned at <err>. The trailing is not be written. The function must
195 * be called with <args> pointing to the first command line word, with <proxy>
196 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
197 * As a special case for compatibility with older configs, it also accepts
198 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100199 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200200static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200201 struct proxy *defpx, const char *file, int line,
202 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100203{
204 unsigned timeout;
205 int retval, cap;
206 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200207 int *tv = NULL;
208 int *td = NULL;
Willy Tarreaued446492014-04-28 22:56:38 +0200209 int warn = 0;
Willy Tarreaue219db72007-12-03 01:30:13 +0100210
211 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200212
213 /* simply skip "timeout" but remain compatible with old form */
214 if (strcmp(args[0], "timeout") == 0)
215 args++;
216
Willy Tarreaue219db72007-12-03 01:30:13 +0100217 name = args[0];
Willy Tarreaued446492014-04-28 22:56:38 +0200218 if (!strcmp(args[0], "client") || (!strcmp(args[0], "clitimeout") && (warn = WARN_CLITO_DEPRECATED))) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100219 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100220 tv = &proxy->timeout.client;
221 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100222 cap = PR_CAP_FE;
223 } else if (!strcmp(args[0], "tarpit")) {
224 tv = &proxy->timeout.tarpit;
225 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100226 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100227 } else if (!strcmp(args[0], "http-keep-alive")) {
228 tv = &proxy->timeout.httpka;
229 td = &defpx->timeout.httpka;
230 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100231 } else if (!strcmp(args[0], "http-request")) {
232 tv = &proxy->timeout.httpreq;
233 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200234 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaued446492014-04-28 22:56:38 +0200235 } else if (!strcmp(args[0], "server") || (!strcmp(args[0], "srvtimeout") && (warn = WARN_SRVTO_DEPRECATED))) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100236 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100237 tv = &proxy->timeout.server;
238 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100239 cap = PR_CAP_BE;
Willy Tarreaued446492014-04-28 22:56:38 +0200240 } else if (!strcmp(args[0], "connect") || (!strcmp(args[0], "contimeout") && (warn = WARN_CONTO_DEPRECATED))) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100241 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100242 tv = &proxy->timeout.connect;
243 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100244 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100245 } else if (!strcmp(args[0], "check")) {
246 tv = &proxy->timeout.check;
247 td = &defpx->timeout.check;
248 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100249 } else if (!strcmp(args[0], "queue")) {
250 tv = &proxy->timeout.queue;
251 td = &defpx->timeout.queue;
252 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200253 } else if (!strcmp(args[0], "tunnel")) {
254 tv = &proxy->timeout.tunnel;
255 td = &defpx->timeout.tunnel;
256 cap = PR_CAP_BE;
Willy Tarreau05cdd962014-05-10 14:30:07 +0200257 } else if (!strcmp(args[0], "client-fin")) {
258 tv = &proxy->timeout.clientfin;
259 td = &defpx->timeout.clientfin;
260 cap = PR_CAP_FE;
261 } else if (!strcmp(args[0], "server-fin")) {
262 tv = &proxy->timeout.serverfin;
263 td = &defpx->timeout.serverfin;
264 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100265 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200266 memprintf(err,
267 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreau05cdd962014-05-10 14:30:07 +0200268 "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', "
269 "'client-fin' and 'server-fin' (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200270 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100271 return -1;
272 }
273
274 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200275 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100276 return -1;
277 }
278
279 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +0200280 if (res == PARSE_TIME_OVER) {
281 memprintf(err, "timer overflow in argument '%s' to 'timeout %s' (maximum value is 2147483647 ms or ~24.8 days)",
282 args[1], name);
283 return -1;
284 }
285 else if (res == PARSE_TIME_UNDER) {
286 memprintf(err, "timer underflow in argument '%s' to 'timeout %s' (minimum non-null value is 1 ms)",
287 args[1], name);
288 return -1;
289 }
290 else if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200291 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100292 return -1;
293 }
294
295 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200296 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
297 name, proxy_type_str(proxy), proxy->id,
298 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100299 retval = 1;
300 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200301 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200302 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100303 retval = 1;
304 }
Willy Tarreaued446492014-04-28 22:56:38 +0200305 else if (warn) {
306 if (!already_warned(warn)) {
307 memprintf(err, "the '%s' directive is now deprecated in favor of 'timeout %s', and will not be supported in future versions.",
308 args[0], name);
309 retval = 1;
310 }
311 }
Willy Tarreaue219db72007-12-03 01:30:13 +0100312
Willy Tarreaufac5b592014-05-22 08:24:46 +0200313 if (*args[2] != 0) {
314 memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]);
315 retval = -1;
316 }
317
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200318 *tv = MS_TO_TICKS(timeout);
Willy Tarreaue219db72007-12-03 01:30:13 +0100319 return retval;
320}
321
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100322/* This function parses a "rate-limit" statement in a proxy section. It returns
323 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200324 * return zero, it will write an error or warning message into a preallocated
325 * buffer returned at <err>. The function must be called with <args> pointing
326 * to the first command line word, with <proxy> pointing to the proxy being
327 * parsed, and <defpx> to the default proxy or NULL.
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100328 */
329static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200330 struct proxy *defpx, const char *file, int line,
331 char **err)
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100332{
333 int retval, cap;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200334 char *res;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100335 unsigned int *tv = NULL;
336 unsigned int *td = NULL;
337 unsigned int val;
338
339 retval = 0;
340
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200341 if (strcmp(args[1], "sessions") == 0) {
Willy Tarreau13a34bd2009-05-10 18:52:49 +0200342 tv = &proxy->fe_sps_lim;
343 td = &defpx->fe_sps_lim;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100344 cap = PR_CAP_FE;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200345 }
346 else {
347 memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100348 return -1;
349 }
350
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200351 if (*args[2] == 0) {
352 memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100353 return -1;
354 }
355
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200356 val = strtoul(args[2], &res, 0);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100357 if (*res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200358 memprintf(err, "'%s %s' : unexpected character '%c' in integer value '%s'", args[0], args[1], *res, args[2]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100359 return -1;
360 }
361
362 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200363 memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability",
364 args[0], args[1], proxy_type_str(proxy), proxy->id,
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100365 (cap & PR_CAP_BE) ? "backend" : "frontend");
366 retval = 1;
367 }
368 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200369 memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100370 retval = 1;
371 }
372
373 *tv = val;
374 return retval;
375}
376
Willy Tarreauc35362a2014-04-25 13:58:37 +0200377/* This function parses a "max-keep-alive-queue" statement in a proxy section.
378 * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it
379 * does not return zero, it will write an error or warning message into a
380 * preallocated buffer returned at <err>. The function must be called with
381 * <args> pointing to the first command line word, with <proxy> pointing to
382 * the proxy being parsed, and <defpx> to the default proxy or NULL.
383 */
384static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy,
385 struct proxy *defpx, const char *file, int line,
386 char **err)
387{
388 int retval;
389 char *res;
390 unsigned int val;
391
392 retval = 0;
393
394 if (*args[1] == 0) {
395 memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]);
396 return -1;
397 }
398
399 val = strtol(args[1], &res, 0);
400 if (*res) {
401 memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
402 return -1;
403 }
404
405 if (!(proxy->cap & PR_CAP_BE)) {
406 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
407 args[0], proxy_type_str(proxy), proxy->id);
408 retval = 1;
409 }
410
411 /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */
412 proxy->max_ka_queue = val + 1;
413 return retval;
414}
415
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200416/* This function parses a "declare" statement in a proxy section. It returns -1
417 * if there is any error, 1 for warning, otherwise 0. If it does not return zero,
418 * it will write an error or warning message into a preallocated buffer returned
419 * at <err>. The function must be called with <args> pointing to the first command
420 * line word, with <proxy> pointing to the proxy being parsed, and <defpx> to the
421 * default proxy or NULL.
422 */
423static int proxy_parse_declare(char **args, int section, struct proxy *curpx,
424 struct proxy *defpx, const char *file, int line,
425 char **err)
426{
427 /* Capture keyword wannot be declared in a default proxy. */
428 if (curpx == defpx) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800429 memprintf(err, "'%s' not available in default section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200430 return -1;
431 }
432
Joseph Herlant59dd2952018-11-15 11:46:55 -0800433 /* Capture keywork is only available in frontend. */
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200434 if (!(curpx->cap & PR_CAP_FE)) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800435 memprintf(err, "'%s' only available in frontend or listen section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200436 return -1;
437 }
438
439 /* Check mandatory second keyword. */
440 if (!args[1] || !*args[1]) {
441 memprintf(err, "'%s' needs a second keyword that specify the type of declaration ('capture')", args[0]);
442 return -1;
443 }
444
Joseph Herlant59dd2952018-11-15 11:46:55 -0800445 /* Actually, declare is only available for declaring capture
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200446 * slot, but in the future it can declare maps or variables.
Joseph Herlant59dd2952018-11-15 11:46:55 -0800447 * So, this section permits to check and switch according with
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200448 * the second keyword.
449 */
450 if (strcmp(args[1], "capture") == 0) {
451 char *error = NULL;
452 long len;
453 struct cap_hdr *hdr;
454
455 /* Check the next keyword. */
456 if (!args[2] || !*args[2] ||
457 (strcmp(args[2], "response") != 0 &&
458 strcmp(args[2], "request") != 0)) {
459 memprintf(err, "'%s %s' requires a direction ('request' or 'response')", args[0], args[1]);
460 return -1;
461 }
462
463 /* Check the 'len' keyword. */
464 if (!args[3] || !*args[3] || strcmp(args[3], "len") != 0) {
465 memprintf(err, "'%s %s' requires a capture length ('len')", args[0], args[1]);
466 return -1;
467 }
468
469 /* Check the length value. */
470 if (!args[4] || !*args[4]) {
471 memprintf(err, "'%s %s': 'len' requires a numeric value that represents the "
472 "capture length",
473 args[0], args[1]);
474 return -1;
475 }
476
477 /* convert the length value. */
478 len = strtol(args[4], &error, 10);
479 if (*error != '\0') {
480 memprintf(err, "'%s %s': cannot parse the length '%s'.",
481 args[0], args[1], args[3]);
482 return -1;
483 }
484
485 /* check length. */
486 if (len <= 0) {
487 memprintf(err, "length must be > 0");
488 return -1;
489 }
490
491 /* register the capture. */
Vincent Bernat02779b62016-04-03 13:48:43 +0200492 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200493 hdr->name = NULL; /* not a header capture */
494 hdr->namelen = 0;
495 hdr->len = len;
496 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
497
498 if (strcmp(args[2], "request") == 0) {
499 hdr->next = curpx->req_cap;
500 hdr->index = curpx->nb_req_cap++;
501 curpx->req_cap = hdr;
502 }
503 if (strcmp(args[2], "response") == 0) {
504 hdr->next = curpx->rsp_cap;
505 hdr->index = curpx->nb_rsp_cap++;
506 curpx->rsp_cap = hdr;
507 }
508 return 0;
509 }
510 else {
511 memprintf(err, "unknown declaration type '%s' (supports 'capture')", args[1]);
512 return -1;
513 }
514}
515
Olivier Houcharda254a372019-04-05 15:30:12 +0200516/* This function parses a "retry-on" statement */
517static int
518proxy_parse_retry_on(char **args, int section, struct proxy *curpx,
519 struct proxy *defpx, const char *file, int line,
520 char **err)
521{
522 int i;
523
524 if (!(*args[1])) {
525 memprintf(err, "'%s' needs at least one keyword to specify when to retry", args[0]);
526 return -1;
527 }
528 if (!(curpx->cap & PR_CAP_BE)) {
529 memprintf(err, "'%s' only available in backend or listen section", args[0]);
530 return -1;
531 }
532 curpx->retry_type = 0;
533 for (i = 1; *(args[i]); i++) {
534 if (!strcmp(args[i], "conn-failure"))
535 curpx->retry_type |= PR_RE_CONN_FAILED;
536 else if (!strcmp(args[i], "empty-response"))
537 curpx->retry_type |= PR_RE_DISCONNECTED;
538 else if (!strcmp(args[i], "response-timeout"))
539 curpx->retry_type |= PR_RE_TIMEOUT;
540 else if (!strcmp(args[i], "404"))
541 curpx->retry_type |= PR_RE_404;
542 else if (!strcmp(args[i], "408"))
543 curpx->retry_type |= PR_RE_408;
544 else if (!strcmp(args[i], "425"))
545 curpx->retry_type |= PR_RE_425;
546 else if (!strcmp(args[i], "500"))
547 curpx->retry_type |= PR_RE_500;
548 else if (!strcmp(args[i], "501"))
549 curpx->retry_type |= PR_RE_501;
550 else if (!strcmp(args[i], "502"))
551 curpx->retry_type |= PR_RE_502;
552 else if (!strcmp(args[i], "503"))
553 curpx->retry_type |= PR_RE_503;
554 else if (!strcmp(args[i], "504"))
555 curpx->retry_type |= PR_RE_504;
Olivier Houchard865d8392019-05-03 22:46:27 +0200556 else if (!strcmp(args[i], "0rtt-rejected"))
557 curpx->retry_type |= PR_RE_EARLY_ERROR;
Olivier Houcharde3249a92019-05-03 23:01:47 +0200558 else if (!strcmp(args[i], "junk-response"))
559 curpx->retry_type |= PR_RE_JUNK_REQUEST;
Olivier Houchardddf0e032019-05-10 18:05:40 +0200560 else if (!(strcmp(args[i], "all-retryable-errors")))
561 curpx->retry_type |= PR_RE_CONN_FAILED | PR_RE_DISCONNECTED |
562 PR_RE_TIMEOUT | PR_RE_500 | PR_RE_502 |
563 PR_RE_503 | PR_RE_504 | PR_RE_EARLY_ERROR |
564 PR_RE_JUNK_REQUEST;
Olivier Houcharda254a372019-04-05 15:30:12 +0200565 else if (!strcmp(args[i], "none")) {
566 if (i != 1 || *args[i + 1]) {
567 memprintf(err, "'%s' 'none' keyworld only usable alone", args[0]);
568 return -1;
569 }
570 } else {
571 memprintf(err, "'%s': unknown keyword '%s'", args[0], args[i]);
572 return -1;
573 }
574
575 }
576
577
578 return 0;
579}
580
Willy Tarreauf79d9502014-03-15 07:22:35 +0100581/* This function inserts proxy <px> into the tree of known proxies. The proxy's
582 * name is used as the storing key so it must already have been initialized.
583 */
584void proxy_store_name(struct proxy *px)
585{
586 px->conf.by_name.key = px->id;
587 ebis_insert(&proxy_by_name, &px->conf.by_name);
588}
589
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200590/* Returns a pointer to the first proxy matching capabilities <cap> and id
591 * <id>. NULL is returned if no match is found. If <table> is non-zero, it
592 * only considers proxies having a table.
Willy Tarreaubc216c42011-08-02 11:25:54 +0200593 */
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200594struct proxy *proxy_find_by_id(int id, int cap, int table)
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200595{
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200596 struct eb32_node *n;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200597
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200598 for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) {
599 struct proxy *px = container_of(n, struct proxy, conf.id);
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100600
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200601 if (px->uuid != id)
602 break;
Alex Williams96532db2009-11-01 21:27:13 -0500603
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200604 if ((px->cap & cap) != cap)
605 continue;
Alex Williams96532db2009-11-01 21:27:13 -0500606
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100607 if (table && (!px->table || !px->table->size))
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200608 continue;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100609
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200610 return px;
611 }
612 return NULL;
613}
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100614
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200615/* Returns a pointer to the first proxy matching either name <name>, or id
616 * <name> if <name> begins with a '#'. NULL is returned if no match is found.
617 * If <table> is non-zero, it only considers proxies having a table.
618 */
619struct proxy *proxy_find_by_name(const char *name, int cap, int table)
620{
621 struct proxy *curproxy;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200622
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200623 if (*name == '#') {
624 curproxy = proxy_find_by_id(atoi(name + 1), cap, table);
625 if (curproxy)
Willy Tarreauc739aa82015-05-26 11:35:41 +0200626 return curproxy;
Alex Williams96532db2009-11-01 21:27:13 -0500627 }
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100628 else {
629 struct ebpt_node *node;
630
631 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
632 curproxy = container_of(node, struct proxy, conf.by_name);
Alex Williams96532db2009-11-01 21:27:13 -0500633
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100634 if (strcmp(curproxy->id, name) != 0)
635 break;
636
637 if ((curproxy->cap & cap) != cap)
638 continue;
639
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100640 if (table && (!curproxy->table || !curproxy->table->size))
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200641 continue;
642
Willy Tarreauc739aa82015-05-26 11:35:41 +0200643 return curproxy;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100644 }
645 }
Willy Tarreauc739aa82015-05-26 11:35:41 +0200646 return NULL;
Alex Williams96532db2009-11-01 21:27:13 -0500647}
648
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200649/* Finds the best match for a proxy with capabilities <cap>, name <name> and id
650 * <id>. At most one of <id> or <name> may be different provided that <cap> is
651 * valid. Either <id> or <name> may be left unspecified (0). The purpose is to
652 * find a proxy based on some information from a previous configuration, across
653 * reloads or during information exchange between peers.
654 *
655 * Names are looked up first if present, then IDs are compared if present. In
656 * case of an inexact match whatever is forced in the configuration has
657 * precedence in the following order :
658 * - 1) forced ID (proves a renaming / change of proxy type)
659 * - 2) proxy name+type (may indicate a move if ID differs)
660 * - 3) automatic ID+type (may indicate a renaming)
661 *
662 * Depending on what is found, we can end up in the following situations :
663 *
664 * name id cap | possible causes
665 * -------------+-----------------
666 * -- -- -- | nothing found
667 * -- -- ok | nothing found
668 * -- ok -- | proxy deleted, ID points to next one
669 * -- ok ok | proxy renamed, or deleted with ID pointing to next one
670 * ok -- -- | proxy deleted, but other half with same name still here (before)
671 * ok -- ok | proxy's ID changed (proxy moved in the config file)
672 * ok ok -- | proxy deleted, but other half with same name still here (after)
673 * ok ok ok | perfect match
674 *
675 * Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits :
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200676 * - PR_FBM_MISMATCH_ID : proxy was found but ID differs
677 * (and ID was not zero)
678 * - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs
679 * (and name was not NULL)
680 * - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with
681 * the same name and/or id
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200682 *
683 * Only a valid proxy is returned. If capabilities do not match, NULL is
684 * returned. The caller can check <diff> to report detailed warnings / errors,
685 * and decide whether or not to use what was found.
686 */
687struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff)
688{
689 struct proxy *byname;
690 struct proxy *byid;
691
692 if (!name && !id)
693 return NULL;
694
695 if (diff)
696 *diff = 0;
697
698 byname = byid = NULL;
699
700 if (name) {
701 byname = proxy_find_by_name(name, cap, 0);
702 if (byname && (!id || byname->uuid == id))
703 return byname;
704 }
705
Joseph Herlant59dd2952018-11-15 11:46:55 -0800706 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200707 * - name not set
708 * - name set but not found
709 * - name found, but ID doesn't match.
710 */
711 if (id) {
712 byid = proxy_find_by_id(id, cap, 0);
713 if (byid) {
714 if (byname) {
715 /* id+type found, name+type found, but not all 3.
716 * ID wins only if forced, otherwise name wins.
717 */
718 if (byid->options & PR_O_FORCED_ID) {
719 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200720 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200721 return byid;
722 }
723 else {
724 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200725 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200726 return byname;
727 }
728 }
729
Joseph Herlant59dd2952018-11-15 11:46:55 -0800730 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200731 * - name not set
732 * - name set but not found
733 */
734 if (name && diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200735 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200736 return byid;
737 }
738
739 /* ID not found */
740 if (byname) {
741 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200742 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200743 return byname;
744 }
745 }
746
Joseph Herlant59dd2952018-11-15 11:46:55 -0800747 /* All remaining possibilities will lead to NULL. If we can report more
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200748 * detailed information to the caller about changed types and/or name,
749 * we'll do it. For example, we could detect that "listen foo" was
750 * split into "frontend foo_ft" and "backend foo_bk" if IDs are forced.
751 * - name not set, ID not found
752 * - name not found, ID not set
753 * - name not found, ID not found
754 */
755 if (!diff)
756 return NULL;
757
758 if (name) {
759 byname = proxy_find_by_name(name, 0, 0);
760 if (byname && (!id || byname->uuid == id))
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200761 *diff |= PR_FBM_MISMATCH_PROXYTYPE;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200762 }
763
764 if (id) {
765 byid = proxy_find_by_id(id, 0, 0);
766 if (byid) {
767 if (!name)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200768 *diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200769 else if (byid->options & PR_O_FORCED_ID)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200770 *diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200771 /* otherwise it's a different proxy that was returned */
772 }
773 }
774 return NULL;
775}
776
Willy Tarreaubaaee002006-06-26 02:48:02 +0200777/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100778 * This function finds a server with matching name within selected proxy.
779 * It also checks if there are more matching servers with
780 * requested name as this often leads into unexpected situations.
781 */
782
783struct server *findserver(const struct proxy *px, const char *name) {
784
785 struct server *cursrv, *target = NULL;
786
787 if (!px)
788 return NULL;
789
790 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
791 if (strcmp(cursrv->id, name))
792 continue;
793
794 if (!target) {
795 target = cursrv;
796 continue;
797 }
798
Christopher Faulet767a84b2017-11-24 16:50:31 +0100799 ha_alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
800 name, px->id);
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100801
802 return NULL;
803 }
804
805 return target;
806}
807
Willy Tarreauff01a212009-03-15 13:46:16 +0100808/* This function checks that the designated proxy has no http directives
809 * enabled. It will output a warning if there are, and will fix some of them.
810 * It returns the number of fatal errors encountered. This should be called
811 * at the end of the configuration parsing if the proxy is not in http mode.
812 * The <file> argument is used to construct the error message.
813 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200814int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100815{
816 if (curproxy->cookie_name != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100817 ha_warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
818 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100819 }
820 if (curproxy->rsp_exp != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100821 ha_warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
822 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100823 }
824 if (curproxy->req_exp != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100825 ha_warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
826 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100827 }
828 if (curproxy->monitor_uri != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100829 ha_warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
830 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100831 }
Willy Tarreauf3e49f92009-10-03 12:21:20 +0200832 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100833 curproxy->lbprm.algo &= ~BE_LB_ALGO;
834 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100835 ha_warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
836 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100837 }
Willy Tarreau17804162009-11-09 21:27:51 +0100838 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
839 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Christopher Faulet767a84b2017-11-24 16:50:31 +0100840 ha_warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
841 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
842 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau17804162009-11-09 21:27:51 +0100843 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200844 if (curproxy->conf.logformat_string == default_http_log_format ||
845 curproxy->conf.logformat_string == clf_http_log_format) {
846 /* Note: we don't change the directive's file:line number */
847 curproxy->conf.logformat_string = default_tcp_log_format;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100848 ha_warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
849 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
850 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau196729e2012-05-31 19:30:26 +0200851 }
852
Willy Tarreauff01a212009-03-15 13:46:16 +0100853 return 0;
854}
855
Willy Tarreau237250c2011-07-29 01:49:03 +0200856/* Perform the most basic initialization of a proxy :
857 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +0200858 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +0200859 */
860void init_new_proxy(struct proxy *p)
861{
862 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100863 p->obj_type = OBJ_TYPE_PROXY;
Patrick Hemmer0355dab2018-05-11 12:52:31 -0400864 p->pendconns = EB_ROOT;
Willy Tarreau237250c2011-07-29 01:49:03 +0200865 LIST_INIT(&p->acl);
866 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200867 LIST_INIT(&p->http_res_rules);
Willy Tarreau353bc9f2014-04-28 22:05:31 +0200868 LIST_INIT(&p->block_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200869 LIST_INIT(&p->redirect_rules);
870 LIST_INIT(&p->mon_fail_cond);
871 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200872 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200873 LIST_INIT(&p->persist_rules);
874 LIST_INIT(&p->sticking_rules);
875 LIST_INIT(&p->storersp_rules);
876 LIST_INIT(&p->tcp_req.inspect_rules);
877 LIST_INIT(&p->tcp_rep.inspect_rules);
878 LIST_INIT(&p->tcp_req.l4_rules);
Willy Tarreau620408f2016-10-21 16:37:51 +0200879 LIST_INIT(&p->tcp_req.l5_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200880 LIST_INIT(&p->req_add);
881 LIST_INIT(&p->rsp_add);
882 LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +0200883 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +0100884 LIST_INIT(&p->logformat);
Dragan Dosen0b85ece2015-09-25 19:17:44 +0200885 LIST_INIT(&p->logformat_sd);
William Lallemanda73203e2012-03-12 12:48:57 +0100886 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200887 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +0200888 LIST_INIT(&p->conf.listeners);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200889 LIST_INIT(&p->conf.args.list);
Baptiste Assmann5ecb77f2013-10-06 23:24:13 +0200890 LIST_INIT(&p->tcpcheck_rules);
Christopher Faulet443ea1a2016-02-04 13:40:26 +0100891 LIST_INIT(&p->filter_configs);
Willy Tarreau237250c2011-07-29 01:49:03 +0200892
893 /* Timeouts are defined as -1 */
894 proxy_reset_timeouts(p);
895 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +0200896
897 /* initial uuid is unassigned (-1) */
898 p->uuid = -1;
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200899
Christopher Faulet1d2b5862019-04-12 16:10:51 +0200900 /* HTX is the default mode, for HTTP and TCP */
901 p->options2 |= PR_O2_USE_HTX;
902
Olivier Houcharda254a372019-04-05 15:30:12 +0200903 /* Default to only allow L4 retries */
904 p->retry_type = PR_RE_CONN_FAILED;
905
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100906 HA_SPIN_INIT(&p->lock);
Willy Tarreau237250c2011-07-29 01:49:03 +0200907}
908
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100909/*
Willy Tarreau2ff76222007-04-09 19:29:56 +0200910 * This function creates all proxy sockets. It should be done very early,
911 * typically before privileges are dropped. The sockets will be registered
912 * but not added to any fd_set, in order not to loose them across the fork().
Willy Tarreau562515c2011-07-25 08:11:52 +0200913 * The proxies also start in READY state because they all have their listeners
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200914 * bound.
Willy Tarreau2ff76222007-04-09 19:29:56 +0200915 *
916 * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
917 * Retryable errors will only be printed if <verbose> is not zero.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200918 */
919int start_proxies(int verbose)
920{
921 struct proxy *curproxy;
922 struct listener *listener;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100923 int lerr, err = ERR_NONE;
924 int pxerr;
925 char msg[100];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200926
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100927 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200928 if (curproxy->state != PR_STNEW)
929 continue; /* already initialized */
930
931 pxerr = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200932 list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
Willy Tarreaue6b98942007-10-29 01:09:36 +0100933 if (listener->state != LI_ASSIGNED)
934 continue; /* already started */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200935
Emeric Bruncf20bf12010-10-22 16:06:11 +0200936 lerr = listener->proto->bind(listener, msg, sizeof(msg));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200937
Willy Tarreaue6b98942007-10-29 01:09:36 +0100938 /* errors are reported if <verbose> is set or if they are fatal */
939 if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
940 if (lerr & ERR_ALERT)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100941 ha_alert("Starting %s %s: %s\n",
942 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaue6b98942007-10-29 01:09:36 +0100943 else if (lerr & ERR_WARN)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100944 ha_warning("Starting %s %s: %s\n",
945 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200946 }
947
Willy Tarreaue6b98942007-10-29 01:09:36 +0100948 err |= lerr;
949 if (lerr & (ERR_ABORT | ERR_FATAL)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200950 pxerr |= 1;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100951 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200952 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100953 else if (lerr & ERR_CODE) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200954 pxerr |= 1;
955 continue;
956 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200957 }
958
959 if (!pxerr) {
Willy Tarreau562515c2011-07-25 08:11:52 +0200960 curproxy->state = PR_STREADY;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200961 send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
962 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100963
964 if (err & ERR_ABORT)
965 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200966 }
967
968 return err;
969}
970
971
972/*
Willy Tarreau918ff602011-07-25 16:33:49 +0200973 * This is the proxy management task. It enables proxies when there are enough
Willy Tarreau87b09662015-04-03 00:22:06 +0200974 * free streams, or stops them when the table is full. It is designed to be
Willy Tarreau918ff602011-07-25 16:33:49 +0200975 * called as a task which is woken up upon stopping or when rate limiting must
976 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200977 */
Olivier Houchard9f6af332018-05-25 14:04:04 +0200978struct task *manage_proxy(struct task *t, void *context, unsigned short state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200979{
Olivier Houchard9f6af332018-05-25 14:04:04 +0200980 struct proxy *p = context;
Willy Tarreau918ff602011-07-25 16:33:49 +0200981 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +0100982 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200983
Willy Tarreau918ff602011-07-25 16:33:49 +0200984 /* We should periodically try to enable listeners waiting for a
985 * global resource here.
986 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200987
Willy Tarreau918ff602011-07-25 16:33:49 +0200988 /* first, let's check if we need to stop the proxy */
989 if (unlikely(stopping && p->state != PR_STSTOPPED)) {
990 int t;
991 t = tick_remain(now_ms, p->stop_time);
992 if (t == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100993 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
994 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau918ff602011-07-25 16:33:49 +0200995 send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
996 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
997 stop_proxy(p);
998 /* try to free more memory */
Willy Tarreaubafbe012017-11-24 17:34:44 +0100999 pool_gc(NULL);
Willy Tarreau918ff602011-07-25 16:33:49 +02001000 }
1001 else {
1002 next = tick_first(next, p->stop_time);
1003 }
1004 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001005
Willy Tarreau3a925c12013-09-04 17:54:01 +02001006 /* If the proxy holds a stick table, we need to purge all unused
1007 * entries. These are all the ones in the table with ref_cnt == 0
1008 * and all the ones in the pool used to allocate new entries. Any
Willy Tarreau87b09662015-04-03 00:22:06 +02001009 * entry attached to an existing stream waiting for a store will
Willy Tarreau3a925c12013-09-04 17:54:01 +02001010 * be in neither list. Any entry being dumped will have ref_cnt > 0.
1011 * However we protect tables that are being synced to peers.
1012 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001013 if (unlikely(stopping && p->state == PR_STSTOPPED && p->table && p->table->current)) {
1014 if (!p->table->syncing) {
1015 stktable_trash_oldest(p->table, p->table->current);
Willy Tarreaubafbe012017-11-24 17:34:44 +01001016 pool_gc(NULL);
Willy Tarreau3a925c12013-09-04 17:54:01 +02001017 }
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001018 if (p->table->current) {
Willy Tarreau3a925c12013-09-04 17:54:01 +02001019 /* some entries still remain, let's recheck in one second */
1020 next = tick_first(next, tick_add(now_ms, 1000));
1021 }
1022 }
1023
Willy Tarreau918ff602011-07-25 16:33:49 +02001024 /* the rest below is just for frontends */
1025 if (!(p->cap & PR_CAP_FE))
1026 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001027
Willy Tarreau918ff602011-07-25 16:33:49 +02001028 /* check the various reasons we may find to block the frontend */
1029 if (unlikely(p->feconn >= p->maxconn)) {
1030 if (p->state == PR_STREADY)
1031 p->state = PR_STFULL;
1032 goto out;
1033 }
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001034
Willy Tarreau918ff602011-07-25 16:33:49 +02001035 /* OK we have no reason to block, so let's unblock if we were blocking */
1036 if (p->state == PR_STFULL)
1037 p->state = PR_STREADY;
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001038
Willy Tarreau918ff602011-07-25 16:33:49 +02001039 if (p->fe_sps_lim &&
1040 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
1041 /* we're blocking because a limit was reached on the number of
1042 * requests/s on the frontend. We want to re-check ASAP, which
1043 * means in 1 ms before estimated expiration date, because the
1044 * timer will have settled down.
1045 */
1046 next = tick_first(next, tick_add(now_ms, wait));
1047 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001048 }
Willy Tarreau918ff602011-07-25 16:33:49 +02001049
1050 /* The proxy is not limited so we can re-enable any waiting listener */
1051 if (!LIST_ISEMPTY(&p->listener_queue))
1052 dequeue_all_listeners(&p->listener_queue);
1053 out:
1054 t->expire = next;
1055 task_queue(t);
1056 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001057}
1058
1059
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001060static int proxy_parse_hard_stop_after(char **args, int section_type, struct proxy *curpx,
1061 struct proxy *defpx, const char *file, int line,
1062 char **err)
1063{
1064 const char *res;
1065
1066 if (!*args[1]) {
1067 memprintf(err, "'%s' expects <time> as argument.\n", args[0]);
1068 return -1;
1069 }
1070 res = parse_time_err(args[1], &global.hard_stop_after, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02001071 if (res == PARSE_TIME_OVER) {
1072 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
1073 args[1], args[0]);
1074 return -1;
1075 }
1076 else if (res == PARSE_TIME_UNDER) {
1077 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
1078 args[1], args[0]);
1079 return -1;
1080 }
1081 else if (res) {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001082 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
1083 return -1;
1084 }
1085 return 0;
1086}
1087
Olivier Houchard9f6af332018-05-25 14:04:04 +02001088struct task *hard_stop(struct task *t, void *context, unsigned short state)
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001089{
1090 struct proxy *p;
1091 struct stream *s;
Willy Tarreau05813ef2021-02-24 11:13:59 +01001092 int thr;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001093
1094 if (killed) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001095 ha_warning("Some tasks resisted to hard-stop, exiting now.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001096 send_log(NULL, LOG_WARNING, "Some tasks resisted to hard-stop, exiting now.\n");
Willy Tarreau7067b3a2019-06-02 11:11:29 +02001097 killed = 2;
Willy Tarreau05813ef2021-02-24 11:13:59 +01001098 for (thr = 0; thr < global.nbthread; thr++)
1099 if (((all_threads_mask & ~tid_bit) >> thr) & 1)
1100 wake_thread(thr);
Willy Tarreau7067b3a2019-06-02 11:11:29 +02001101 t->expire = TICK_ETERNITY;
1102 return t;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001103 }
1104
Christopher Faulet767a84b2017-11-24 16:50:31 +01001105 ha_warning("soft-stop running for too long, performing a hard-stop.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001106 send_log(NULL, LOG_WARNING, "soft-stop running for too long, performing a hard-stop.\n");
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001107 p = proxies_list;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001108 while (p) {
1109 if ((p->cap & PR_CAP_FE) && (p->feconn > 0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001110 ha_warning("Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1111 p->id, p->feconn);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001112 send_log(p, LOG_WARNING, "Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1113 p->id, p->feconn);
1114 }
1115 p = p->next;
1116 }
Willy Tarreau6faa9092021-02-24 11:08:56 +01001117
1118 thread_isolate();
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001119 list_for_each_entry(s, &streams, list) {
1120 stream_shutdown(s, SF_ERR_KILLED);
1121 }
Willy Tarreau6faa9092021-02-24 11:08:56 +01001122 thread_release();
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001123
1124 killed = 1;
1125 t->expire = tick_add(now_ms, MS_TO_TICKS(1000));
1126 return t;
1127}
1128
Willy Tarreaubaaee002006-06-26 02:48:02 +02001129/*
1130 * this function disables health-check servers so that the process will quickly be ignored
1131 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
1132 * time will not be used since it would already not listen anymore to the socket.
1133 */
1134void soft_stop(void)
1135{
1136 struct proxy *p;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001137 struct peers *prs;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001138 struct task *task;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001139
1140 stopping = 1;
William Dauchy857b9432019-12-28 15:36:02 +01001141 /* disable busy polling to avoid cpu eating for the new process */
1142 global.tune.options &= ~GTUNE_BUSY_POLLING;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001143 if (tick_isset(global.hard_stop_after)) {
Emeric Brunc60def82017-09-27 14:59:38 +02001144 task = task_new(MAX_THREADS_MASK);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001145 if (task) {
1146 task->process = hard_stop;
1147 task_schedule(task, tick_add(now_ms, global.hard_stop_after));
1148 }
1149 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001150 ha_alert("out of memory trying to allocate the hard-stop task.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001151 }
1152 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001153 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001154 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001155 while (p) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001156 /* Zombie proxy, let's close the file descriptors */
1157 if (p->state == PR_STSTOPPED &&
1158 !LIST_ISEMPTY(&p->conf.listeners) &&
1159 LIST_ELEM(p->conf.listeners.n,
Willy Tarreau0d5b5c22019-12-10 07:11:35 +01001160 struct listener *, by_fe)->state > LI_ASSIGNED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001161 struct listener *l;
1162 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreau0d5b5c22019-12-10 07:11:35 +01001163 if (l->state > LI_ASSIGNED)
Olivier Houchard1fc05162017-04-06 01:05:05 +02001164 close(l->fd);
1165 l->state = LI_INIT;
1166 }
1167 }
1168
Willy Tarreaubaaee002006-06-26 02:48:02 +02001169 if (p->state != PR_STSTOPPED) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001170 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 +02001171 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 +02001172 p->stop_time = tick_add(now_ms, p->grace);
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001173
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001174 /* Note: do not wake up stopped proxies' task nor their tables'
1175 * tasks as these ones might point to already released entries.
1176 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001177 if (p->table && p->table->size && p->table->sync_task)
1178 task_wakeup(p->table->sync_task, TASK_WOKEN_MSG);
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001179
1180 if (p->task)
1181 task_wakeup(p->task, TASK_WOKEN_MSG);
1182 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001183 p = p->next;
1184 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001185
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001186 prs = cfg_peers;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001187 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001188 if (prs->peers_fe)
1189 stop_proxy(prs->peers_fe);
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001190 prs = prs->next;
1191 }
Willy Tarreaud0807c32010-08-27 18:26:11 +02001192 /* signal zero is used to broadcast the "stopping" event */
1193 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001194}
1195
1196
Willy Tarreaube58c382011-07-24 18:28:10 +02001197/* Temporarily disables listening on all of the proxy's listeners. Upon
1198 * success, the proxy enters the PR_PAUSED state. If disabling at least one
1199 * listener returns an error, then the proxy state is set to PR_STERROR
Willy Tarreauce8fe252011-09-07 19:14:57 +02001200 * because we don't know how to resume from this. The function returns 0
1201 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001202 */
Willy Tarreauce8fe252011-09-07 19:14:57 +02001203int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001204{
1205 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +02001206
1207 if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
1208 p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
1209 return 1;
1210
Christopher Faulet767a84b2017-11-24 16:50:31 +01001211 ha_warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001212 send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
1213
Willy Tarreau4348fad2012-09-20 16:48:07 +02001214 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreaube58c382011-07-24 18:28:10 +02001215 if (!pause_listener(l))
Willy Tarreaubaaee002006-06-26 02:48:02 +02001216 p->state = PR_STERROR;
1217 }
Willy Tarreauce8fe252011-09-07 19:14:57 +02001218
1219 if (p->state == PR_STERROR) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001220 ha_warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001221 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
1222 return 0;
1223 }
1224
1225 p->state = PR_STPAUSED;
1226 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +02001227}
1228
Olivier Houchard1fc05162017-04-06 01:05:05 +02001229/* This function makes the proxy unusable, but keeps the listening sockets
1230 * opened, so that if any process requests them, we are able to serve them.
1231 * This should only be called early, before we started accepting requests.
1232 */
1233void zombify_proxy(struct proxy *p)
1234{
1235 struct listener *l;
1236 struct listener *first_to_listen = NULL;
1237
1238 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1239 enum li_state oldstate = l->state;
1240
1241 unbind_listener_no_close(l);
1242 if (l->state >= LI_ASSIGNED) {
1243 delete_listener(l);
Olivier Houchard1fc05162017-04-06 01:05:05 +02001244 }
1245 /*
1246 * Pretend we're still up and running so that the fd
1247 * will be sent if asked.
1248 */
1249 l->state = LI_ZOMBIE;
1250 if (!first_to_listen && oldstate >= LI_LISTEN)
1251 first_to_listen = l;
1252 }
1253 /* Quick hack : at stop time, to know we have to close the sockets
1254 * despite the proxy being marked as stopped, make the first listener
1255 * of the listener list an active one, so that we don't have to
1256 * parse the whole list to be sure.
1257 */
1258 if (first_to_listen && LIST_ELEM(p->conf.listeners.n,
1259 struct listener *, by_fe) != first_to_listen) {
1260 LIST_DEL(&l->by_fe);
1261 LIST_ADD(&p->conf.listeners, &l->by_fe);
1262 }
1263
1264 p->state = PR_STSTOPPED;
1265}
Willy Tarreauda250db2008-10-12 12:07:48 +02001266
1267/*
1268 * This function completely stops a proxy and releases its listeners. It has
1269 * to be called when going down in order to release the ports so that another
1270 * process may bind to them. It must also be called on disabled proxies at the
William Lallemandc59f9882018-11-16 16:57:21 +01001271 * end of start-up. If all listeners are closed, the proxy is set to the
Willy Tarreau6d79ced2019-07-24 17:42:44 +02001272 * PR_STSTOPPED state. The function takes the proxy's lock so it's safe to
1273 * call from multiple places.
Willy Tarreauda250db2008-10-12 12:07:48 +02001274 */
1275void stop_proxy(struct proxy *p)
1276{
1277 struct listener *l;
William Lallemandc59f9882018-11-16 16:57:21 +01001278 int nostop = 0;
Willy Tarreauda250db2008-10-12 12:07:48 +02001279
Willy Tarreau6d79ced2019-07-24 17:42:44 +02001280 HA_SPIN_LOCK(PROXY_LOCK, &p->lock);
1281
Willy Tarreau4348fad2012-09-20 16:48:07 +02001282 list_for_each_entry(l, &p->conf.listeners, by_fe) {
William Lallemandc59f9882018-11-16 16:57:21 +01001283 if (l->options & LI_O_NOSTOP) {
1284 HA_ATOMIC_ADD(&unstoppable_jobs, 1);
1285 nostop = 1;
1286 continue;
1287 }
William Lallemand79eeb2b2019-10-18 21:16:39 +02001288 /* The master should not close an inherited FD */
1289 if (master && (l->options & LI_O_INHERITED))
1290 unbind_listener_no_close(l);
1291 else
1292 unbind_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001293 if (l->state >= LI_ASSIGNED) {
1294 delete_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001295 }
1296 }
William Lallemandc59f9882018-11-16 16:57:21 +01001297 if (!nostop)
1298 p->state = PR_STSTOPPED;
Willy Tarreau6d79ced2019-07-24 17:42:44 +02001299
1300 HA_SPIN_UNLOCK(PROXY_LOCK, &p->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001301}
1302
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001303/* This function resumes listening on the specified proxy. It scans all of its
1304 * listeners and tries to enable them all. If any of them fails, the proxy is
1305 * put back to the paused state. It returns 1 upon success, or zero if an error
1306 * is encountered.
1307 */
1308int resume_proxy(struct proxy *p)
1309{
1310 struct listener *l;
1311 int fail;
1312
1313 if (p->state != PR_STPAUSED)
1314 return 1;
1315
Christopher Faulet767a84b2017-11-24 16:50:31 +01001316 ha_warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001317 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
1318
1319 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +02001320 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001321 if (!resume_listener(l)) {
1322 int port;
1323
1324 port = get_host_port(&l->addr);
1325 if (port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001326 ha_warning("Port %d busy while trying to enable %s %s.\n",
1327 port, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001328 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
1329 port, proxy_cap_str(p->cap), p->id);
1330 }
1331 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001332 ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
1333 l->luid, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001334 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
1335 l->luid, proxy_cap_str(p->cap), p->id);
1336 }
1337
1338 /* Another port might have been enabled. Let's stop everything. */
1339 fail = 1;
1340 break;
1341 }
1342 }
1343
1344 p->state = PR_STREADY;
1345 if (fail) {
1346 pause_proxy(p);
1347 return 0;
1348 }
1349 return 1;
1350}
1351
Willy Tarreaubaaee002006-06-26 02:48:02 +02001352/*
1353 * This function temporarily disables listening so that another new instance
1354 * can start listening. It is designed to be called upon reception of a
1355 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
1356 * the proxy, or a SIGTTIN can be sent to listen again.
1357 */
1358void pause_proxies(void)
1359{
1360 int err;
1361 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001362 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001363
1364 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001365 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001366 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001367 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +02001368 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001369 p = p->next;
1370 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001371
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001372 prs = cfg_peers;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001373 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001374 if (prs->peers_fe)
1375 err |= !pause_proxy(prs->peers_fe);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001376 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001377 }
1378
Willy Tarreaubaaee002006-06-26 02:48:02 +02001379 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001380 ha_warning("Some proxies refused to pause, performing soft stop now.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02001381 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
1382 soft_stop();
1383 }
1384}
1385
1386
1387/*
1388 * This function reactivates listening. This can be used after a call to
1389 * sig_pause(), for example when a new instance has failed starting up.
1390 * It is designed to be called upon reception of a SIGTTIN.
1391 */
Willy Tarreaube58c382011-07-24 18:28:10 +02001392void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001393{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001394 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001395 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001396 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001397
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001398 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001399 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001400 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001401 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001402 err |= !resume_proxy(p);
1403 p = p->next;
1404 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001405
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001406 prs = cfg_peers;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001407 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001408 if (prs->peers_fe)
1409 err |= !resume_proxy(prs->peers_fe);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001410 prs = prs->next;
1411 }
Willy Tarreaube58c382011-07-24 18:28:10 +02001412
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001413 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001414 ha_warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001415 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 +02001416 }
1417}
1418
Willy Tarreau87b09662015-04-03 00:22:06 +02001419/* Set current stream's backend to <be>. Nothing is done if the
1420 * stream already had a backend assigned, which is indicated by
Willy Tarreaue7dff022015-04-03 01:14:29 +02001421 * s->flags & SF_BE_ASSIGNED.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001422 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001423 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001424 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001425int stream_set_backend(struct stream *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001426{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001427 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001428 return 1;
Christopher Faulet41179042016-06-21 11:54:52 +02001429
1430 if (flt_set_stream_backend(s, be) < 0)
1431 return 0;
1432
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001433 s->be = be;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001434 HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
1435 HA_ATOMIC_ADD(&be->beconn, 1));
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001436 proxy_inc_be_ctr(be);
1437
Willy Tarreau3e451842019-02-01 15:06:09 +01001438 /* HTX/legacy must match */
Christopher Fauletbbe68542019-04-08 10:53:51 +02001439 if ((strm_fe(s)->options2 ^ be->options2) & PR_O2_USE_HTX)
Willy Tarreau3e451842019-02-01 15:06:09 +01001440 return 0;
1441
Willy Tarreau87b09662015-04-03 00:22:06 +02001442 /* assign new parameters to the stream from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +02001443 s->si[1].flags &= ~SI_FL_INDEP_STR;
1444 if (be->options2 & PR_O2_INDEPSTR)
1445 s->si[1].flags |= SI_FL_INDEP_STR;
1446
Hongbo Longe39683c2017-03-10 18:41:51 +01001447 if (tick_isset(be->timeout.serverfin))
1448 s->si[1].hcto = be->timeout.serverfin;
1449
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001450 /* We want to enable the backend-specific analysers except those which
1451 * were already run as part of the frontend/listener. Note that it would
1452 * be more reliable to store the list of analysers that have been run,
1453 * but what we do here is OK for now.
1454 */
Christopher Faulet70e2f272017-01-09 16:33:19 +01001455 s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001456
Willy Tarreau51aecc72009-07-12 09:47:04 +02001457 /* If the target backend requires HTTP processing, we have to allocate
Willy Tarreaueee5b512015-04-03 23:46:31 +02001458 * the HTTP transaction and hdr_idx if we did not have one.
Willy Tarreau51aecc72009-07-12 09:47:04 +02001459 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001460 if (unlikely(!s->txn && be->http_needed)) {
1461 if (unlikely(!http_alloc_txn(s)))
Willy Tarreau51aecc72009-07-12 09:47:04 +02001462 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +02001463
1464 /* and now initialize the HTTP transaction state */
1465 http_init_txn(s);
Willy Tarreau51aecc72009-07-12 09:47:04 +02001466 }
1467
Christopher Faulet309c6412015-12-02 09:57:32 +01001468 /* Be sure to filter request headers if the backend is an HTTP proxy and
1469 * if there are filters attached to the stream. */
1470 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +01001471 s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +01001472
Willy Tarreaueee5b512015-04-03 23:46:31 +02001473 if (s->txn) {
1474 if (be->options2 & PR_O2_RSPBUG_OK)
1475 s->txn->rsp.err_pos = -1; /* let buggy responses pass */
Willy Tarreau4e21ff92014-09-30 18:44:22 +02001476
Willy Tarreaueee5b512015-04-03 23:46:31 +02001477 /* If we chain to an HTTP backend running a different HTTP mode, we
1478 * have to re-adjust the desired keep-alive/close mode to accommodate
1479 * both the frontend's and the backend's modes.
1480 */
Willy Tarreaud0d8da92015-04-04 02:10:38 +02001481 if (strm_fe(s)->mode == PR_MODE_HTTP && be->mode == PR_MODE_HTTP &&
1482 ((strm_fe(s)->options & PR_O_HTTP_MODE) != (be->options & PR_O_HTTP_MODE)))
Willy Tarreaueee5b512015-04-03 23:46:31 +02001483 http_adjust_conn_mode(s, s->txn, &s->txn->req);
Willy Tarreau80a92c02014-03-12 10:41:13 +01001484
Christopher Fauletbbe68542019-04-08 10:53:51 +02001485 /* If we chain a TCP frontend to an HTX backend, we must upgrade
1486 * the client mux */
1487 if (!IS_HTX_STRM(s) && be->mode == PR_MODE_HTTP && (be->options2 & PR_O2_USE_HTX)) {
1488 struct connection *conn = objt_conn(strm_sess(s)->origin);
1489 struct conn_stream *cs = objt_cs(s->si[0].end);
1490
1491 if (conn && cs) {
1492 si_rx_endp_more(&s->si[0]);
Olivier Houchard13f556e2019-07-03 13:08:18 +02001493 /* Make sure we're unsubscribed, the the new
1494 * mux will probably want to subscribe to
1495 * the underlying XPRT
1496 */
1497 if (s->si[0].wait_event.events)
1498 conn->mux->unsubscribe(cs, s->si[0].wait_event.events,
1499 &s->si[0].wait_event);
Christopher Fauletbbe68542019-04-08 10:53:51 +02001500 if (conn_upgrade_mux_fe(conn, cs, &s->req.buf, ist(""), PROTO_MODE_HTX) == -1)
1501 return 0;
Olivier Houchard1a8febc2019-07-31 18:05:26 +02001502 if (!strcmp(conn->mux->name, "H2")) {
1503 /* For HTTP/2, destroy the conn_stream,
1504 * disable logging, and pretend that we
1505 * failed, to that the stream is
1506 * silently destroyed. The new mux
1507 * will create new streams.
1508 */
Olivier Houchard09e0b172019-08-09 18:01:15 +02001509 cs_free(cs);
Olivier Houchard1a8febc2019-07-31 18:05:26 +02001510 si_detach_endpoint(&s->si[0]);
1511 s->logs.logwait = 0;
1512 s->logs.level = 0;
1513 s->flags |= SF_IGNORE;
1514 return 0;
1515 }
Olivier Houchardc1f02762019-08-09 17:50:05 +02001516 s->flags |= SF_HTX;
Christopher Fauletbbe68542019-04-08 10:53:51 +02001517 }
1518 }
Christopher Faulet0ed1e892019-12-20 15:59:20 +01001519 else if (IS_HTX_STRM(s) && be->mode != PR_MODE_HTTP) {
1520 /* If a TCP backend is assgiend to an HTX stream, return
1521 * an error. It may happens for a new stream on a
1522 * previously upgraded connnections. */
1523 if (!(s->flags & SF_ERR_MASK))
1524 s->flags |= SF_ERR_INTERNAL;
1525 return 0;
1526 }
Christopher Fauletbbe68542019-04-08 10:53:51 +02001527
Willy Tarreaueee5b512015-04-03 23:46:31 +02001528 /* If an LB algorithm needs to access some pre-parsed body contents,
1529 * we must not start to forward anything until the connection is
1530 * confirmed otherwise we'll lose the pointer to these data and
1531 * prevent the hash from being doable again after a redispatch.
1532 */
1533 if (be->mode == PR_MODE_HTTP &&
1534 (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM))
1535 s->txn->req.flags |= HTTP_MSGF_WAIT_CONN;
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001536
1537 /* we may request to parse a request body */
1538 if ((be->options & PR_O_WREQ_BODY) &&
1539 (s->txn->req.body_len || (s->txn->req.flags & HTTP_MSGF_TE_CHNK)))
1540 s->req.analysers |= AN_REQ_HTTP_BODY;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001541 }
1542
1543 s->flags |= SF_BE_ASSIGNED;
Willy Tarreau96e31212011-05-30 18:10:30 +02001544 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001545 s->req.flags |= CF_NEVER_WAIT;
1546 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02001547 }
1548
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001549 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001550}
1551
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001552/* Capture a bad request or response and archive it in the proxy's structure.
1553 * It is relatively protocol-agnostic so it requires that a number of elements
1554 * are passed :
1555 * - <proxy> is the proxy where the error was detected and where the snapshot
1556 * needs to be stored
Joseph Herlant59dd2952018-11-15 11:46:55 -08001557 * - <is_back> indicates that the error happened when receiving the response
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001558 * - <other_end> is a pointer to the proxy on the other side when known
1559 * - <target> is the target of the connection, usually a server or a proxy
1560 * - <sess> is the session which experienced the error
1561 * - <ctx> may be NULL or should contain any info relevant to the protocol
1562 * - <buf> is the buffer containing the offending data
1563 * - <buf_ofs> is the position of this buffer's input data in the input
1564 * stream, starting at zero. It may be passed as zero if unknown.
1565 * - <buf_out> is the portion of <buf->data> which was already forwarded and
1566 * which precedes the buffer's input. The buffer's input starts at
1567 * buf->head + buf_out.
1568 * - <err_pos> is the pointer to the faulty byte in the buffer's input.
1569 * - <show> is the callback to use to display <ctx>. It may be NULL.
1570 */
1571void proxy_capture_error(struct proxy *proxy, int is_back,
1572 struct proxy *other_end, enum obj_type *target,
1573 const struct session *sess,
1574 const struct buffer *buf, long buf_ofs,
1575 unsigned int buf_out, unsigned int err_pos,
1576 const union error_snapshot_ctx *ctx,
1577 void (*show)(struct buffer *, const struct error_snapshot *))
1578{
1579 struct error_snapshot *es;
1580 unsigned int buf_len;
1581 int len1, len2;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001582 unsigned int ev_id;
1583
1584 ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
1585
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001586 buf_len = b_data(buf) - buf_out;
1587
1588 es = malloc(sizeof(*es) + buf_len);
Willy Tarreauc55015e2018-09-07 19:02:32 +02001589 if (!es)
1590 return;
1591
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001592 es->buf_len = buf_len;
1593 es->ev_id = ev_id;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001594
Christopher Faulet107a7cb2020-01-06 11:37:00 +01001595 len1 = b_size(buf) - b_peek_ofs(buf, buf_out);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001596 if (len1 > buf_len)
1597 len1 = buf_len;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001598
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001599 if (len1) {
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001600 memcpy(es->buf, b_peek(buf, buf_out), len1);
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001601 len2 = buf_len - len1;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001602 if (len2)
1603 memcpy(es->buf + len1, b_orig(buf), len2);
1604 }
1605
1606 es->buf_err = err_pos;
1607 es->when = date; // user-visible date
1608 es->srv = objt_server(target);
1609 es->oe = other_end;
1610 if (objt_conn(sess->origin))
1611 es->src = __objt_conn(sess->origin)->addr.from;
1612 else
1613 memset(&es->src, 0, sizeof(es->src));
1614
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001615 es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
1616 es->buf_out = buf_out;
1617 es->buf_ofs = buf_ofs;
1618
1619 /* be sure to indicate the offset of the first IN byte */
1620 if (es->buf_ofs >= es->buf_len)
1621 es->buf_ofs -= es->buf_len;
1622 else
1623 es->buf_ofs = 0;
1624
1625 /* protocol-specific part now */
1626 if (ctx)
1627 es->ctx = *ctx;
1628 else
1629 memset(&es->ctx, 0, sizeof(es->ctx));
1630 es->show = show;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001631
1632 /* note: we still lock since we have to be certain that nobody is
1633 * dumping the output while we free.
1634 */
1635 HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
1636 if (is_back) {
1637 es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
1638 } else {
1639 es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
1640 }
1641 free(es);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001642 HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
1643}
1644
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001645/* Configure all proxies which lack a maxconn setting to use the global one by
1646 * default. This avoids the common mistake consisting in setting maxconn only
1647 * in the global section and discovering the hard way that it doesn't propagate
1648 * through the frontends. These values are also propagated through the various
1649 * targetted backends, whose fullconn is finally calculated if not yet set.
1650 */
1651void proxy_adjust_all_maxconn()
1652{
1653 struct proxy *curproxy;
1654 struct switching_rule *swrule1, *swrule2;
1655
1656 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1657 if (curproxy->state == PR_STSTOPPED)
1658 continue;
1659
1660 if (!(curproxy->cap & PR_CAP_FE))
1661 continue;
1662
1663 if (!curproxy->maxconn)
1664 curproxy->maxconn = global.maxconn;
1665
1666 /* update the target backend's fullconn count : default_backend */
1667 if (curproxy->defbe.be)
1668 curproxy->defbe.be->tot_fe_maxconn += curproxy->maxconn;
1669 else if ((curproxy->cap & PR_CAP_LISTEN) == PR_CAP_LISTEN)
1670 curproxy->tot_fe_maxconn += curproxy->maxconn;
1671
1672 list_for_each_entry(swrule1, &curproxy->switching_rules, list) {
1673 /* For each target of switching rules, we update their
1674 * tot_fe_maxconn, except if a previous rule points to
1675 * the same backend or to the default backend.
1676 */
1677 if (swrule1->be.backend != curproxy->defbe.be) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001678 /* note: swrule1->be.backend isn't a backend if the rule
1679 * is dynamic, it's an expression instead, so it must not
1680 * be dereferenced as a backend before being certain it is.
1681 */
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001682 list_for_each_entry(swrule2, &curproxy->switching_rules, list) {
1683 if (swrule2 == swrule1) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001684 if (!swrule1->dynamic)
1685 swrule1->be.backend->tot_fe_maxconn += curproxy->maxconn;
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001686 break;
1687 }
1688 else if (!swrule2->dynamic && swrule2->be.backend == swrule1->be.backend) {
1689 /* there are multiple refs of this backend */
1690 break;
1691 }
1692 }
1693 }
1694 }
1695 }
1696
1697 /* automatically compute fullconn if not set. We must not do it in the
1698 * loop above because cross-references are not yet fully resolved.
1699 */
1700 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1701 if (curproxy->state == PR_STSTOPPED)
1702 continue;
1703
1704 /* If <fullconn> is not set, let's set it to 10% of the sum of
1705 * the possible incoming frontend's maxconns.
1706 */
1707 if (!curproxy->fullconn && (curproxy->cap & PR_CAP_BE)) {
1708 /* we have the sum of the maxconns in <total>. We only
1709 * keep 10% of that sum to set the default fullconn, with
1710 * a hard minimum of 1 (to avoid a divide by zero).
1711 */
1712 curproxy->fullconn = (curproxy->tot_fe_maxconn + 9) / 10;
1713 if (!curproxy->fullconn)
1714 curproxy->fullconn = 1;
1715 }
1716 }
1717}
1718
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001719/* Config keywords below */
1720
Willy Tarreaudc13c112013-06-21 23:16:39 +02001721static struct cfg_kw_list cfg_kws = {ILH, {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001722 { CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001723 { CFG_LISTEN, "timeout", proxy_parse_timeout },
1724 { CFG_LISTEN, "clitimeout", proxy_parse_timeout },
1725 { CFG_LISTEN, "contimeout", proxy_parse_timeout },
1726 { CFG_LISTEN, "srvtimeout", proxy_parse_timeout },
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001727 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreauc35362a2014-04-25 13:58:37 +02001728 { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +02001729 { CFG_LISTEN, "declare", proxy_parse_declare },
Olivier Houcharda254a372019-04-05 15:30:12 +02001730 { CFG_LISTEN, "retry-on", proxy_parse_retry_on },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001731 { 0, NULL, NULL },
1732}};
1733
Willy Tarreau0108d902018-11-25 19:14:37 +01001734INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
1735
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001736/* Expects to find a frontend named <arg> and returns it, otherwise displays various
1737 * adequate error messages and returns NULL. This function is designed to be used by
1738 * functions requiring a frontend on the CLI.
1739 */
1740struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
1741{
1742 struct proxy *px;
1743
1744 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001745 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001746 appctx->ctx.cli.msg = "A frontend name is expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001747 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001748 return NULL;
1749 }
1750
1751 px = proxy_fe_by_name(arg);
1752 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001753 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001754 appctx->ctx.cli.msg = "No such frontend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001755 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001756 return NULL;
1757 }
1758 return px;
1759}
1760
Olivier Houchard614f8d72017-03-14 20:08:46 +01001761/* Expects to find a backend named <arg> and returns it, otherwise displays various
1762 * adequate error messages and returns NULL. This function is designed to be used by
1763 * functions requiring a frontend on the CLI.
1764 */
1765struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
1766{
1767 struct proxy *px;
1768
1769 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001770 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001771 appctx->ctx.cli.msg = "A backend name is expected.\n";
1772 appctx->st0 = CLI_ST_PRINT;
1773 return NULL;
1774 }
1775
1776 px = proxy_be_by_name(arg);
1777 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001778 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001779 appctx->ctx.cli.msg = "No such backend.\n";
1780 appctx->st0 = CLI_ST_PRINT;
1781 return NULL;
1782 }
1783 return px;
1784}
1785
1786
William Lallemanda6c5f332016-11-19 02:25:36 +01001787/* parse a "show servers" CLI line, returns 0 if it wants to start the dump or
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001788 * 1 if it stops immediately. If an argument is specified, it will set the proxy
1789 * pointer into cli.p0 and its ID into cli.i0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001790 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001791static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemanda6c5f332016-11-19 02:25:36 +01001792{
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001793 struct proxy *px;
William Lallemanda6c5f332016-11-19 02:25:36 +01001794
1795 /* check if a backend name has been provided */
1796 if (*args[3]) {
1797 /* read server state from local file */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001798 px = proxy_be_by_name(args[3]);
William Lallemanda6c5f332016-11-19 02:25:36 +01001799
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001800 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001801 appctx->ctx.cli.severity = LOG_ERR;
William Lallemanda6c5f332016-11-19 02:25:36 +01001802 appctx->ctx.cli.msg = "Can't find backend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001803 appctx->st0 = CLI_ST_PRINT;
William Lallemanda6c5f332016-11-19 02:25:36 +01001804 return 1;
1805 }
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001806 appctx->ctx.cli.p0 = px;
1807 appctx->ctx.cli.i0 = px->uuid;
William Lallemanda6c5f332016-11-19 02:25:36 +01001808 }
1809 return 0;
1810}
1811
Willy Tarreauca212e52020-07-01 07:02:42 +02001812/* dumps server state information for all the servers found in backend cli.p0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001813 * These information are all the parameters which may change during HAProxy runtime.
1814 * By default, we only export to the last known server state file format.
1815 * These information can be used at next startup to recover same level of server state.
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001816 * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
1817 * pointer from cli.p1.
William Lallemanda6c5f332016-11-19 02:25:36 +01001818 */
Willy Tarreauca212e52020-07-01 07:02:42 +02001819static int dump_servers_state(struct stream_interface *si)
William Lallemanda6c5f332016-11-19 02:25:36 +01001820{
1821 struct appctx *appctx = __objt_appctx(si->end);
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001822 struct proxy *px = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001823 struct server *srv;
1824 char srv_addr[INET6_ADDRSTRLEN + 1];
1825 time_t srv_time_since_last_change;
1826 int bk_f_forced_id, srv_f_forced_id;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001827 char *srvrecord;
William Lallemanda6c5f332016-11-19 02:25:36 +01001828
William Lallemanda6c5f332016-11-19 02:25:36 +01001829 /* we don't want to report any state if the backend is not enabled on this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001830 if (!(proc_mask(px->bind_proc) & pid_bit))
William Lallemanda6c5f332016-11-19 02:25:36 +01001831 return 1;
1832
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001833 if (!appctx->ctx.cli.p1)
1834 appctx->ctx.cli.p1 = px->srv;
William Lallemanda6c5f332016-11-19 02:25:36 +01001835
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001836 for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
1837 srv = appctx->ctx.cli.p1;
William Lallemanda6c5f332016-11-19 02:25:36 +01001838 srv_addr[0] = '\0';
1839
1840 switch (srv->addr.ss_family) {
1841 case AF_INET:
1842 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
1843 srv_addr, INET_ADDRSTRLEN + 1);
1844 break;
1845 case AF_INET6:
1846 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
1847 srv_addr, INET6_ADDRSTRLEN + 1);
1848 break;
Daniel Corbett9215ffa2018-05-19 19:43:24 -04001849 default:
1850 memcpy(srv_addr, "-\0", 2);
1851 break;
William Lallemanda6c5f332016-11-19 02:25:36 +01001852 }
1853 srv_time_since_last_change = now.tv_sec - srv->last_change;
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001854 bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001855 srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
1856
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001857 srvrecord = NULL;
1858 if (srv->srvrq && srv->srvrq->name)
1859 srvrecord = srv->srvrq->name;
1860
Willy Tarreauab06f882020-07-01 07:09:39 +02001861 chunk_printf(&trash,
William Lallemanda6c5f332016-11-19 02:25:36 +01001862 "%d %s "
1863 "%d %s %s "
1864 "%d %d %d %d %ld "
1865 "%d %d %d %d %d "
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001866 "%d %d %s %u %s"
William Lallemanda6c5f332016-11-19 02:25:36 +01001867 "\n",
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001868 px->uuid, px->id,
William Lallemanda6c5f332016-11-19 02:25:36 +01001869 srv->puid, srv->id, srv_addr,
Emeric Brun52a91d32017-08-31 14:41:55 +02001870 srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
William Lallemanda6c5f332016-11-19 02:25:36 +01001871 srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001872 bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
1873 srvrecord ? srvrecord : "-");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001874 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001875 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001876 return 0;
1877 }
1878 }
1879 return 1;
1880}
1881
1882/* Parses backend list or simply use backend name provided by the user to return
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001883 * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
1884 * non-null.
William Lallemanda6c5f332016-11-19 02:25:36 +01001885 */
1886static int cli_io_handler_servers_state(struct appctx *appctx)
1887{
1888 struct stream_interface *si = appctx->owner;
William Lallemanda6c5f332016-11-19 02:25:36 +01001889 struct proxy *curproxy;
1890
1891 chunk_reset(&trash);
1892
1893 if (appctx->st2 == STAT_ST_INIT) {
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001894 if (!appctx->ctx.cli.p0)
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001895 appctx->ctx.cli.p0 = proxies_list;
William Lallemanda6c5f332016-11-19 02:25:36 +01001896 appctx->st2 = STAT_ST_HEAD;
1897 }
1898
1899 if (appctx->st2 == STAT_ST_HEAD) {
1900 chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001901 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001902 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001903 return 0;
1904 }
1905 appctx->st2 = STAT_ST_INFO;
1906 }
1907
1908 /* STAT_ST_INFO */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001909 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1910 curproxy = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001911 /* servers are only in backends */
1912 if (curproxy->cap & PR_CAP_BE) {
Willy Tarreauca212e52020-07-01 07:02:42 +02001913 if (!dump_servers_state(si))
William Lallemanda6c5f332016-11-19 02:25:36 +01001914 return 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001915 }
1916 /* only the selected proxy is dumped */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001917 if (appctx->ctx.cli.i0)
William Lallemanda6c5f332016-11-19 02:25:36 +01001918 break;
1919 }
1920
1921 return 1;
1922}
1923
Willy Tarreau608ea592016-12-16 18:01:15 +01001924/* Parses backend list and simply report backend names. It keeps the proxy
1925 * pointer in cli.p0.
1926 */
William Lallemand933efcd2016-11-22 12:34:16 +01001927static int cli_io_handler_show_backend(struct appctx *appctx)
1928{
William Lallemand933efcd2016-11-22 12:34:16 +01001929 struct stream_interface *si = appctx->owner;
1930 struct proxy *curproxy;
1931
1932 chunk_reset(&trash);
1933
Willy Tarreau608ea592016-12-16 18:01:15 +01001934 if (!appctx->ctx.cli.p0) {
William Lallemand933efcd2016-11-22 12:34:16 +01001935 chunk_printf(&trash, "# name\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001936 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001937 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001938 return 0;
1939 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001940 appctx->ctx.cli.p0 = proxies_list;
William Lallemand933efcd2016-11-22 12:34:16 +01001941 }
1942
Willy Tarreau608ea592016-12-16 18:01:15 +01001943 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1944 curproxy = appctx->ctx.cli.p0;
William Lallemand933efcd2016-11-22 12:34:16 +01001945
1946 /* looking for backends only */
1947 if (!(curproxy->cap & PR_CAP_BE))
1948 continue;
1949
1950 /* we don't want to list a backend which is bound to this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001951 if (!(proc_mask(curproxy->bind_proc) & pid_bit))
William Lallemand933efcd2016-11-22 12:34:16 +01001952 continue;
1953
1954 chunk_appendf(&trash, "%s\n", curproxy->id);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001955 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001956 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001957 return 0;
1958 }
1959 }
1960
1961 return 1;
1962}
William Lallemanda6c5f332016-11-19 02:25:36 +01001963
Willy Tarreaua275a372018-08-21 14:50:44 +02001964/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
1965 *
1966 * Grabs the proxy lock and each server's lock.
1967 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001968static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001969{
1970 struct proxy *px;
1971 struct server *s;
1972
1973 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1974 return 1;
1975
1976 px = cli_find_backend(appctx, args[3]);
1977 if (!px)
1978 return 1;
1979
Willy Tarreau0ff395c2019-07-30 11:59:34 +02001980 /* Note: this lock is to make sure this doesn't change while another
1981 * thread is in srv_set_dyncookie().
1982 */
Willy Tarreaua275a372018-08-21 14:50:44 +02001983 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001984 px->ck_opts |= PR_CK_DYNAMIC;
Willy Tarreau0ff395c2019-07-30 11:59:34 +02001985 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001986
Willy Tarreaua275a372018-08-21 14:50:44 +02001987 for (s = px->srv; s != NULL; s = s->next) {
1988 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001989 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001990 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1991 }
1992
Olivier Houchard614f8d72017-03-14 20:08:46 +01001993 return 1;
1994}
1995
Willy Tarreaua275a372018-08-21 14:50:44 +02001996/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
1997 *
1998 * Grabs the proxy lock and each server's lock.
1999 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002000static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01002001{
2002 struct proxy *px;
2003 struct server *s;
2004
2005 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2006 return 1;
2007
2008 px = cli_find_backend(appctx, args[3]);
2009 if (!px)
2010 return 1;
2011
Willy Tarreau0ff395c2019-07-30 11:59:34 +02002012 /* Note: this lock is to make sure this doesn't change while another
2013 * thread is in srv_set_dyncookie().
2014 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002015 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002016 px->ck_opts &= ~PR_CK_DYNAMIC;
Willy Tarreau0ff395c2019-07-30 11:59:34 +02002017 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002018
2019 for (s = px->srv; s != NULL; s = s->next) {
Willy Tarreaua275a372018-08-21 14:50:44 +02002020 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002021 if (!(s->flags & SRV_F_COOKIESET)) {
2022 free(s->cookie);
2023 s->cookie = NULL;
2024 }
Willy Tarreaua275a372018-08-21 14:50:44 +02002025 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002026 }
2027
2028 return 1;
2029}
2030
Willy Tarreaua275a372018-08-21 14:50:44 +02002031/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
2032 *
2033 * Grabs the proxy lock and each server's lock.
2034 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002035static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01002036{
2037 struct proxy *px;
2038 struct server *s;
2039 char *newkey;
2040
2041 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2042 return 1;
2043
2044 px = cli_find_backend(appctx, args[3]);
2045 if (!px)
2046 return 1;
2047
2048 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002049 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01002050 appctx->ctx.cli.msg = "String value expected.\n";
2051 appctx->st0 = CLI_ST_PRINT;
2052 return 1;
2053 }
2054
2055 newkey = strdup(args[4]);
2056 if (!newkey) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002057 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01002058 appctx->ctx.cli.msg = "Failed to allocate memory.\n";
2059 appctx->st0 = CLI_ST_PRINT;
2060 return 1;
2061 }
Willy Tarreaua275a372018-08-21 14:50:44 +02002062
Willy Tarreau0ff395c2019-07-30 11:59:34 +02002063 /* Note: this lock is to make sure this doesn't change while another
2064 * thread is in srv_set_dyncookie().
2065 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002066 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002067 free(px->dyncookie_key);
2068 px->dyncookie_key = newkey;
Willy Tarreau0ff395c2019-07-30 11:59:34 +02002069 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002070
Willy Tarreaua275a372018-08-21 14:50:44 +02002071 for (s = px->srv; s != NULL; s = s->next) {
2072 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002073 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02002074 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
2075 }
2076
Olivier Houchard614f8d72017-03-14 20:08:46 +01002077 return 1;
2078}
2079
Willy Tarreaua275a372018-08-21 14:50:44 +02002080/* Parses the "set maxconn frontend" directive, it always returns 1.
2081 *
2082 * Grabs the proxy lock.
2083 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002084static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002085{
2086 struct proxy *px;
2087 struct listener *l;
2088 int v;
2089
2090 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2091 return 1;
2092
2093 px = cli_find_frontend(appctx, args[3]);
2094 if (!px)
2095 return 1;
2096
2097 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002098 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002099 appctx->ctx.cli.msg = "Integer value expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002100 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002101 return 1;
2102 }
2103
2104 v = atoi(args[4]);
2105 if (v < 0) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002106 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002107 appctx->ctx.cli.msg = "Value out of range.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002108 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002109 return 1;
2110 }
2111
2112 /* OK, the value is fine, so we assign it to the proxy and to all of
2113 * its listeners. The blocked ones will be dequeued.
2114 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002115 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2116
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002117 px->maxconn = v;
2118 list_for_each_entry(l, &px->conf.listeners, by_fe) {
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002119 if (l->state == LI_FULL)
2120 resume_listener(l);
2121 }
2122
2123 if (px->maxconn > px->feconn && !LIST_ISEMPTY(&px->listener_queue))
2124 dequeue_all_listeners(&px->listener_queue);
2125
Willy Tarreaua275a372018-08-21 14:50:44 +02002126 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2127
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002128 return 1;
2129}
2130
Willy Tarreaua275a372018-08-21 14:50:44 +02002131/* Parses the "shutdown frontend" directive, it always returns 1.
2132 *
2133 * Grabs the proxy lock.
2134 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002135static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002136{
2137 struct proxy *px;
2138
2139 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2140 return 1;
2141
2142 px = cli_find_frontend(appctx, args[2]);
2143 if (!px)
2144 return 1;
2145
2146 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002147 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002148 appctx->ctx.cli.msg = "Frontend was already shut down.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002149 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002150 return 1;
2151 }
2152
Christopher Faulet767a84b2017-11-24 16:50:31 +01002153 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2154 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002155 send_log(px, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2156 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreaua275a372018-08-21 14:50:44 +02002157
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002158 stop_proxy(px);
2159 return 1;
2160}
2161
Willy Tarreaua275a372018-08-21 14:50:44 +02002162/* Parses the "disable frontend" directive, it always returns 1.
2163 *
2164 * Grabs the proxy lock.
2165 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002166static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002167{
2168 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002169 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002170
2171 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2172 return 1;
2173
2174 px = cli_find_frontend(appctx, args[2]);
2175 if (!px)
2176 return 1;
2177
2178 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002179 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002180 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot disable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002181 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002182 return 1;
2183 }
2184
2185 if (px->state == PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002186 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002187 appctx->ctx.cli.msg = "Frontend is already disabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002188 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002189 return 1;
2190 }
2191
Willy Tarreaua275a372018-08-21 14:50:44 +02002192 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2193 ret = pause_proxy(px);
2194 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2195
2196 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002197 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002198 appctx->ctx.cli.msg = "Failed to pause frontend, check logs for precise cause.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002199 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002200 return 1;
2201 }
2202 return 1;
2203}
2204
Willy Tarreaua275a372018-08-21 14:50:44 +02002205/* Parses the "enable frontend" directive, it always returns 1.
2206 *
2207 * Grabs the proxy lock.
2208 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002209static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002210{
2211 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002212 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002213
2214 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2215 return 1;
2216
2217 px = cli_find_frontend(appctx, args[2]);
2218 if (!px)
2219 return 1;
2220
2221 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002222 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002223 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot enable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002224 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002225 return 1;
2226 }
2227
2228 if (px->state != PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002229 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002230 appctx->ctx.cli.msg = "Frontend is already enabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002231 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002232 return 1;
2233 }
2234
Willy Tarreaua275a372018-08-21 14:50:44 +02002235 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2236 ret = resume_proxy(px);
2237 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2238
2239 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002240 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002241 appctx->ctx.cli.msg = "Failed to resume frontend, check logs for precise cause (port conflict?).\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002242 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002243 return 1;
2244 }
2245 return 1;
2246}
2247
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002248/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
2249 * now.
2250 */
2251static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
2252{
2253 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2254 return 1;
2255
2256 if (*args[2]) {
2257 struct proxy *px;
2258
2259 px = proxy_find_by_name(args[2], 0, 0);
2260 if (px)
2261 appctx->ctx.errors.iid = px->uuid;
2262 else
2263 appctx->ctx.errors.iid = atoi(args[2]);
2264
2265 if (!appctx->ctx.errors.iid) {
2266 appctx->ctx.cli.severity = LOG_ERR;
2267 appctx->ctx.cli.msg = "No such proxy.\n";
2268 appctx->st0 = CLI_ST_PRINT;
2269 return 1;
2270 }
2271 }
2272 else
2273 appctx->ctx.errors.iid = -1; // dump all proxies
2274
2275 appctx->ctx.errors.flag = 0;
2276 if (strcmp(args[3], "request") == 0)
2277 appctx->ctx.errors.flag |= 4; // ignore response
2278 else if (strcmp(args[3], "response") == 0)
2279 appctx->ctx.errors.flag |= 2; // ignore request
2280 appctx->ctx.errors.px = NULL;
2281 return 0;
2282}
2283
2284/* This function dumps all captured errors onto the stream interface's
2285 * read buffer. It returns 0 if the output buffer is full and it needs
2286 * to be called again, otherwise non-zero.
2287 */
2288static int cli_io_handler_show_errors(struct appctx *appctx)
2289{
2290 struct stream_interface *si = appctx->owner;
2291 extern const char *monthname[12];
2292
2293 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
2294 return 1;
2295
2296 chunk_reset(&trash);
2297
2298 if (!appctx->ctx.errors.px) {
2299 /* the function had not been called yet, let's prepare the
2300 * buffer for a response.
2301 */
2302 struct tm tm;
2303
2304 get_localtime(date.tv_sec, &tm);
2305 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
2306 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2307 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
2308 error_snapshot_id);
2309
Willy Tarreau36b27362018-09-07 19:55:44 +02002310 if (ci_putchk(si_ic(si), &trash) == -1)
2311 goto cant_send;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002312
2313 appctx->ctx.errors.px = proxies_list;
2314 appctx->ctx.errors.bol = 0;
2315 appctx->ctx.errors.ptr = -1;
2316 }
2317
2318 /* we have two inner loops here, one for the proxy, the other one for
2319 * the buffer.
2320 */
2321 while (appctx->ctx.errors.px) {
2322 struct error_snapshot *es;
2323
Willy Tarreau36b27362018-09-07 19:55:44 +02002324 HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2325
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002326 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002327 es = appctx->ctx.errors.px->invalid_req;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002328 if (appctx->ctx.errors.flag & 2) // skip req
2329 goto next;
2330 }
2331 else {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002332 es = appctx->ctx.errors.px->invalid_rep;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002333 if (appctx->ctx.errors.flag & 4) // skip resp
2334 goto next;
2335 }
2336
Willy Tarreauc55015e2018-09-07 19:02:32 +02002337 if (!es)
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002338 goto next;
2339
2340 if (appctx->ctx.errors.iid >= 0 &&
2341 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
2342 es->oe->uuid != appctx->ctx.errors.iid)
2343 goto next;
2344
2345 if (appctx->ctx.errors.ptr < 0) {
2346 /* just print headers now */
2347
2348 char pn[INET6_ADDRSTRLEN];
2349 struct tm tm;
2350 int port;
2351
2352 get_localtime(es->when.tv_sec, &tm);
2353 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
2354 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2355 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
2356
2357 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
2358 case AF_INET:
2359 case AF_INET6:
2360 port = get_host_port(&es->src);
2361 break;
2362 default:
2363 port = 0;
2364 }
2365
2366 switch (appctx->ctx.errors.flag & 1) {
2367 case 0:
2368 chunk_appendf(&trash,
2369 " frontend %s (#%d): invalid request\n"
2370 " backend %s (#%d)",
2371 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2372 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
2373 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
2374 break;
2375 case 1:
2376 chunk_appendf(&trash,
2377 " backend %s (#%d): invalid response\n"
2378 " frontend %s (#%d)",
2379 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2380 es->oe->id, es->oe->uuid);
2381 break;
2382 }
2383
2384 chunk_appendf(&trash,
2385 ", server %s (#%d), event #%u, src %s:%d\n"
2386 " buffer starts at %llu (including %u out), %u free,\n"
2387 " len %u, wraps at %u, error at position %u\n",
2388 es->srv ? es->srv->id : "<NONE>",
2389 es->srv ? es->srv->puid : -1,
2390 es->ev_id, pn, port,
2391 es->buf_ofs, es->buf_out,
2392 global.tune.bufsize - es->buf_out - es->buf_len,
2393 es->buf_len, es->buf_wrap, es->buf_err);
2394
2395 if (es->show)
2396 es->show(&trash, es);
2397
2398 chunk_appendf(&trash, " \n");
2399
Willy Tarreau36b27362018-09-07 19:55:44 +02002400 if (ci_putchk(si_ic(si), &trash) == -1)
2401 goto cant_send_unlock;
2402
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002403 appctx->ctx.errors.ptr = 0;
2404 appctx->ctx.errors.ev_id = es->ev_id;
2405 }
2406
2407 if (appctx->ctx.errors.ev_id != es->ev_id) {
2408 /* the snapshot changed while we were dumping it */
2409 chunk_appendf(&trash,
2410 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau36b27362018-09-07 19:55:44 +02002411 if (ci_putchk(si_ic(si), &trash) == -1)
2412 goto cant_send_unlock;
2413
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002414 goto next;
2415 }
2416
2417 /* OK, ptr >= 0, so we have to dump the current line */
Willy Tarreau4bc7d902018-09-07 20:07:17 +02002418 while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002419 int newptr;
2420 int newline;
2421
2422 newline = appctx->ctx.errors.bol;
2423 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
2424 if (newptr == appctx->ctx.errors.ptr)
Willy Tarreau36b27362018-09-07 19:55:44 +02002425 goto cant_send_unlock;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002426
Willy Tarreau36b27362018-09-07 19:55:44 +02002427 if (ci_putchk(si_ic(si), &trash) == -1)
2428 goto cant_send_unlock;
2429
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002430 appctx->ctx.errors.ptr = newptr;
2431 appctx->ctx.errors.bol = newline;
2432 };
2433 next:
Willy Tarreau36b27362018-09-07 19:55:44 +02002434 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002435 appctx->ctx.errors.bol = 0;
2436 appctx->ctx.errors.ptr = -1;
2437 appctx->ctx.errors.flag ^= 1;
2438 if (!(appctx->ctx.errors.flag & 1))
2439 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
2440 }
2441
2442 /* dump complete */
2443 return 1;
Willy Tarreau36b27362018-09-07 19:55:44 +02002444
2445 cant_send_unlock:
2446 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2447 cant_send:
Willy Tarreaudb398432018-11-15 11:08:52 +01002448 si_rx_room_blk(si);
Willy Tarreau36b27362018-09-07 19:55:44 +02002449 return 0;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002450}
2451
William Lallemanda6c5f332016-11-19 02:25:36 +01002452/* register cli keywords */
2453static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau15b9e682016-11-24 11:55:28 +01002454 { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
2455 { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002456 { { "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 +01002457 { { "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 +01002458 { { "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 +01002459 { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
Olivier Houchard614f8d72017-03-14 20:08:46 +01002460 { { "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 },
2461 { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
2462 { { "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 +02002463 { { "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 +01002464 {{},}
2465}};
2466
Willy Tarreau0108d902018-11-25 19:14:37 +01002467INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002468
2469/*
2470 * Local variables:
2471 * c-indent-level: 8
2472 * c-basic-offset: 8
2473 * End:
2474 */