blob: 1378941d766cf281d80f5fb252ac4388dd2eccf4 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * Proxy variables and functions.
3 *
Willy Tarreau3a7d2072009-03-05 23:48:25 +01004 * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <fcntl.h>
14#include <unistd.h>
Willy Tarreauc8f24f82007-11-30 18:38:35 +010015#include <string.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020016#include <sys/types.h>
17#include <sys/socket.h>
18#include <sys/stat.h>
19
Willy Tarreau2dd0d472006-06-29 17:53:05 +020020#include <common/defaults.h>
Willy Tarreau9de1bbd2008-07-09 20:34:27 +020021#include <common/cfgparse.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020022#include <common/compat.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020023#include <common/config.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010024#include <common/errors.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010025#include <common/initcall.h>
Willy Tarreau4d2d0982007-05-14 00:39:29 +020026#include <common/memory.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020027#include <common/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020028
Willy Tarreaucfd837f2014-03-15 07:43:51 +010029#include <eb32tree.h>
30#include <ebistree.h>
31
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +020032#include <types/capture.h>
Willy Tarreau960f2cb2016-11-24 12:02:29 +010033#include <types/cli.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020034#include <types/global.h>
Willy Tarreau3fdb3662012-11-12 00:42:33 +010035#include <types/obj_type.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020036#include <types/peers.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010037#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020038
William Lallemanda6c5f332016-11-19 02:25:36 +010039#include <proto/applet.h>
40#include <proto/cli.h>
Alexandre Cassen87ea5482007-10-11 20:48:58 +020041#include <proto/backend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020042#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020043#include <proto/filters.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020044#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020045#include <proto/log.h>
Willy Tarreaue6b98942007-10-29 01:09:36 +010046#include <proto/proto_tcp.h>
Christopher Fauletfc9cfe42019-07-16 14:54:53 +020047#include <proto/http_ana.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020048#include <proto/proxy.h>
Olivier Houchard614f8d72017-03-14 20:08:46 +010049#include <proto/server.h>
Willy Tarreaud0807c32010-08-27 18:26:11 +020050#include <proto/signal.h>
Willy Tarreaufb0afa72015-04-03 14:46:27 +020051#include <proto/stream.h>
William Lallemanda6c5f332016-11-19 02:25:36 +010052#include <proto/stream_interface.h>
Emeric Brun5a8c0a92010-09-23 18:44:36 +020053#include <proto/task.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020054
55
Willy Tarreau918ff602011-07-25 16:33:49 +020056int listeners; /* # of proxy listeners, set by cfgparse */
Olivier Houchardfbc74e82017-11-24 16:54:05 +010057struct proxy *proxies_list = NULL; /* list of all existing proxies */
Willy Tarreau53fb4ae2009-10-04 23:04:08 +020058struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
Willy Tarreauf79d9502014-03-15 07:22:35 +010059struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */
Willy Tarreau10479e42010-12-12 14:00:34 +010060unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
Willy Tarreaubaaee002006-06-26 02:48:02 +020061
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010062/* proxy->options */
63const struct cfg_opt cfg_opts[] =
64{
65 { "abortonclose", PR_O_ABRT_CLOSE, PR_CAP_BE, 0, 0 },
66 { "allbackups", PR_O_USE_ALL_BK, PR_CAP_BE, 0, 0 },
67 { "checkcache", PR_O_CHK_CACHE, PR_CAP_BE, 0, PR_MODE_HTTP },
68 { "clitcpka", PR_O_TCP_CLI_KA, PR_CAP_FE, 0, 0 },
69 { "contstats", PR_O_CONTSTATS, PR_CAP_FE, 0, 0 },
70 { "dontlognull", PR_O_NULLNOLOG, PR_CAP_FE, 0, 0 },
71 { "http_proxy", PR_O_HTTP_PROXY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
72 { "http-buffer-request", PR_O_WREQ_BODY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
73 { "http-ignore-probes", PR_O_IGNORE_PRB, PR_CAP_FE, 0, PR_MODE_HTTP },
74 { "prefer-last-server", PR_O_PREF_LAST, PR_CAP_BE, 0, PR_MODE_HTTP },
75 { "logasap", PR_O_LOGASAP, PR_CAP_FE, 0, 0 },
76 { "nolinger", PR_O_TCP_NOLING, PR_CAP_FE | PR_CAP_BE, 0, 0 },
77 { "persist", PR_O_PERSIST, PR_CAP_BE, 0, 0 },
78 { "srvtcpka", PR_O_TCP_SRV_KA, PR_CAP_BE, 0, 0 },
Willy Tarreaue5733232019-05-22 19:24:06 +020079#ifdef USE_TPROXY
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010080 { "transparent", PR_O_TRANSP, PR_CAP_BE, 0, 0 },
81#else
82 { "transparent", 0, 0, 0, 0 },
83#endif
84
85 { NULL, 0, 0, 0, 0 }
86};
87
88/* proxy->options2 */
89const struct cfg_opt cfg_opts2[] =
90{
Willy Tarreaue5733232019-05-22 19:24:06 +020091#ifdef USE_LINUX_SPLICE
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010092 { "splice-request", PR_O2_SPLIC_REQ, PR_CAP_FE|PR_CAP_BE, 0, 0 },
93 { "splice-response", PR_O2_SPLIC_RTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
94 { "splice-auto", PR_O2_SPLIC_AUT, PR_CAP_FE|PR_CAP_BE, 0, 0 },
95#else
96 { "splice-request", 0, 0, 0, 0 },
97 { "splice-response", 0, 0, 0, 0 },
98 { "splice-auto", 0, 0, 0, 0 },
99#endif
100 { "accept-invalid-http-request", PR_O2_REQBUG_OK, PR_CAP_FE, 0, PR_MODE_HTTP },
101 { "accept-invalid-http-response", PR_O2_RSPBUG_OK, PR_CAP_BE, 0, PR_MODE_HTTP },
102 { "dontlog-normal", PR_O2_NOLOGNORM, PR_CAP_FE, 0, 0 },
103 { "log-separate-errors", PR_O2_LOGERRORS, PR_CAP_FE, 0, 0 },
104 { "log-health-checks", PR_O2_LOGHCHKS, PR_CAP_BE, 0, 0 },
105 { "socket-stats", PR_O2_SOCKSTAT, PR_CAP_FE, 0, 0 },
106 { "tcp-smart-accept", PR_O2_SMARTACC, PR_CAP_FE, 0, 0 },
107 { "tcp-smart-connect", PR_O2_SMARTCON, PR_CAP_BE, 0, 0 },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100108 { "independent-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
109 { "http-use-proxy-header", PR_O2_USE_PXHDR, PR_CAP_FE, 0, PR_MODE_HTTP },
110 { "http-pretend-keepalive", PR_O2_FAKE_KA, PR_CAP_BE, 0, PR_MODE_HTTP },
111 { "http-no-delay", PR_O2_NODELAY, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Faulet31930372019-07-15 10:16:58 +0200112 { "http-use-htx", 0, PR_CAP_FE|PR_CAP_BE, 0, 0 }, // deprecated
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100113 { NULL, 0, 0, 0 }
114};
115
Willy Tarreau977b8e42006-12-29 14:19:17 +0100116/*
Willy Tarreau816eb542007-11-04 07:04:43 +0100117 * This function returns a string containing a name describing capabilities to
118 * report comprehensible error messages. Specifically, it will return the words
Christopher Faulet898566e2016-10-26 11:06:28 +0200119 * "frontend", "backend" when appropriate, or "proxy" for all other
Willy Tarreau816eb542007-11-04 07:04:43 +0100120 * cases including the proxies declared in "listen" mode.
Willy Tarreau977b8e42006-12-29 14:19:17 +0100121 */
Willy Tarreau816eb542007-11-04 07:04:43 +0100122const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +0100123{
Willy Tarreau816eb542007-11-04 07:04:43 +0100124 if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
125 if (cap & PR_CAP_FE)
126 return "frontend";
127 else if (cap & PR_CAP_BE)
128 return "backend";
Willy Tarreau816eb542007-11-04 07:04:43 +0100129 }
130 return "proxy";
Willy Tarreau977b8e42006-12-29 14:19:17 +0100131}
132
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100133/*
134 * This function returns a string containing the mode of the proxy in a format
135 * suitable for error messages.
136 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100137const char *proxy_mode_str(int mode) {
138
139 if (mode == PR_MODE_TCP)
140 return "tcp";
141 else if (mode == PR_MODE_HTTP)
142 return "http";
143 else if (mode == PR_MODE_HEALTH)
144 return "health";
William Lallemandcf62f7e2018-10-26 14:47:40 +0200145 else if (mode == PR_MODE_CLI)
146 return "cli";
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100147 else
148 return "unknown";
149}
150
Willy Tarreauf3950172009-10-10 18:35:51 +0200151/*
152 * This function scans the list of backends and servers to retrieve the first
153 * backend and the first server with the given names, and sets them in both
154 * parameters. It returns zero if either is not found, or non-zero and sets
155 * the ones it did not found to NULL. If a NULL pointer is passed for the
156 * backend, only the pointer to the server will be updated.
157 */
158int get_backend_server(const char *bk_name, const char *sv_name,
159 struct proxy **bk, struct server **sv)
160{
161 struct proxy *p;
162 struct server *s;
Willy Tarreau7ecc4202014-03-15 07:57:11 +0100163 int sid;
Willy Tarreauf3950172009-10-10 18:35:51 +0200164
165 *sv = NULL;
166
Willy Tarreau050536d2012-10-04 08:47:34 +0200167 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200168 if (*sv_name == '#')
169 sid = atoi(sv_name + 1);
170
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200171 p = proxy_be_by_name(bk_name);
Willy Tarreauf3950172009-10-10 18:35:51 +0200172 if (bk)
173 *bk = p;
174 if (!p)
175 return 0;
176
177 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100178 if ((sid >= 0 && s->puid == sid) ||
179 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200180 break;
181 *sv = s;
182 if (!s)
183 return 0;
184 return 1;
185}
186
Willy Tarreaue219db72007-12-03 01:30:13 +0100187/* This function parses a "timeout" statement in a proxy section. It returns
188 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200189 * return zero, it will write an error or warning message into a preallocated
190 * buffer returned at <err>. The trailing is not be written. The function must
191 * be called with <args> pointing to the first command line word, with <proxy>
192 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
193 * As a special case for compatibility with older configs, it also accepts
194 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100195 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200196static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200197 struct proxy *defpx, const char *file, int line,
198 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100199{
200 unsigned timeout;
201 int retval, cap;
202 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200203 int *tv = NULL;
204 int *td = NULL;
Willy Tarreaue219db72007-12-03 01:30:13 +0100205
206 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200207
208 /* simply skip "timeout" but remain compatible with old form */
209 if (strcmp(args[0], "timeout") == 0)
210 args++;
211
Willy Tarreaue219db72007-12-03 01:30:13 +0100212 name = args[0];
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200213 if (!strcmp(args[0], "client")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100214 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100215 tv = &proxy->timeout.client;
216 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100217 cap = PR_CAP_FE;
218 } else if (!strcmp(args[0], "tarpit")) {
219 tv = &proxy->timeout.tarpit;
220 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100221 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100222 } else if (!strcmp(args[0], "http-keep-alive")) {
223 tv = &proxy->timeout.httpka;
224 td = &defpx->timeout.httpka;
225 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100226 } else if (!strcmp(args[0], "http-request")) {
227 tv = &proxy->timeout.httpreq;
228 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200229 cap = PR_CAP_FE | PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200230 } else if (!strcmp(args[0], "server")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100231 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100232 tv = &proxy->timeout.server;
233 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100234 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200235 } else if (!strcmp(args[0], "connect")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100236 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100237 tv = &proxy->timeout.connect;
238 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100239 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100240 } else if (!strcmp(args[0], "check")) {
241 tv = &proxy->timeout.check;
242 td = &defpx->timeout.check;
243 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100244 } else if (!strcmp(args[0], "queue")) {
245 tv = &proxy->timeout.queue;
246 td = &defpx->timeout.queue;
247 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200248 } else if (!strcmp(args[0], "tunnel")) {
249 tv = &proxy->timeout.tunnel;
250 td = &defpx->timeout.tunnel;
251 cap = PR_CAP_BE;
Willy Tarreau05cdd962014-05-10 14:30:07 +0200252 } else if (!strcmp(args[0], "client-fin")) {
253 tv = &proxy->timeout.clientfin;
254 td = &defpx->timeout.clientfin;
255 cap = PR_CAP_FE;
256 } else if (!strcmp(args[0], "server-fin")) {
257 tv = &proxy->timeout.serverfin;
258 td = &defpx->timeout.serverfin;
259 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200260 } else if (!strcmp(args[0], "clitimeout")) {
261 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout client'.", args[0]);
262 return -1;
263 } else if (!strcmp(args[0], "srvtimeout")) {
264 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout server'.", args[0]);
265 return -1;
266 } else if (!strcmp(args[0], "contimeout")) {
267 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout connect'.", args[0]);
268 return -1;
Willy Tarreaue219db72007-12-03 01:30:13 +0100269 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200270 memprintf(err,
271 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreau05cdd962014-05-10 14:30:07 +0200272 "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', "
273 "'client-fin' and 'server-fin' (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200274 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100275 return -1;
276 }
277
278 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200279 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100280 return -1;
281 }
282
283 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +0200284 if (res == PARSE_TIME_OVER) {
285 memprintf(err, "timer overflow in argument '%s' to 'timeout %s' (maximum value is 2147483647 ms or ~24.8 days)",
286 args[1], name);
287 return -1;
288 }
289 else if (res == PARSE_TIME_UNDER) {
290 memprintf(err, "timer underflow in argument '%s' to 'timeout %s' (minimum non-null value is 1 ms)",
291 args[1], name);
292 return -1;
293 }
294 else if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200295 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100296 return -1;
297 }
298
299 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200300 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
301 name, proxy_type_str(proxy), proxy->id,
302 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100303 retval = 1;
304 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200305 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200306 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100307 retval = 1;
308 }
309
Willy Tarreaufac5b592014-05-22 08:24:46 +0200310 if (*args[2] != 0) {
311 memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]);
312 retval = -1;
313 }
314
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200315 *tv = MS_TO_TICKS(timeout);
Willy Tarreaue219db72007-12-03 01:30:13 +0100316 return retval;
317}
318
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100319/* This function parses a "rate-limit" statement in a proxy section. It returns
320 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200321 * return zero, it will write an error or warning message into a preallocated
322 * buffer returned at <err>. The function must be called with <args> pointing
323 * to the first command line word, with <proxy> pointing to the proxy being
324 * parsed, and <defpx> to the default proxy or NULL.
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100325 */
326static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200327 struct proxy *defpx, const char *file, int line,
328 char **err)
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100329{
330 int retval, cap;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200331 char *res;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100332 unsigned int *tv = NULL;
333 unsigned int *td = NULL;
334 unsigned int val;
335
336 retval = 0;
337
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200338 if (strcmp(args[1], "sessions") == 0) {
Willy Tarreau13a34bd2009-05-10 18:52:49 +0200339 tv = &proxy->fe_sps_lim;
340 td = &defpx->fe_sps_lim;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100341 cap = PR_CAP_FE;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200342 }
343 else {
344 memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100345 return -1;
346 }
347
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200348 if (*args[2] == 0) {
349 memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100350 return -1;
351 }
352
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200353 val = strtoul(args[2], &res, 0);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100354 if (*res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200355 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 +0100356 return -1;
357 }
358
359 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200360 memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability",
361 args[0], args[1], proxy_type_str(proxy), proxy->id,
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100362 (cap & PR_CAP_BE) ? "backend" : "frontend");
363 retval = 1;
364 }
365 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200366 memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100367 retval = 1;
368 }
369
370 *tv = val;
371 return retval;
372}
373
Willy Tarreauc35362a2014-04-25 13:58:37 +0200374/* This function parses a "max-keep-alive-queue" statement in a proxy section.
375 * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it
376 * does not return zero, it will write an error or warning message into a
377 * preallocated buffer returned at <err>. The function must be called with
378 * <args> pointing to the first command line word, with <proxy> pointing to
379 * the proxy being parsed, and <defpx> to the default proxy or NULL.
380 */
381static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy,
382 struct proxy *defpx, const char *file, int line,
383 char **err)
384{
385 int retval;
386 char *res;
387 unsigned int val;
388
389 retval = 0;
390
391 if (*args[1] == 0) {
392 memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]);
393 return -1;
394 }
395
396 val = strtol(args[1], &res, 0);
397 if (*res) {
398 memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
399 return -1;
400 }
401
402 if (!(proxy->cap & PR_CAP_BE)) {
403 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
404 args[0], proxy_type_str(proxy), proxy->id);
405 retval = 1;
406 }
407
408 /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */
409 proxy->max_ka_queue = val + 1;
410 return retval;
411}
412
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200413/* This function parses a "declare" statement in a proxy section. It returns -1
414 * if there is any error, 1 for warning, otherwise 0. If it does not return zero,
415 * it will write an error or warning message into a preallocated buffer returned
416 * at <err>. The function must be called with <args> pointing to the first command
417 * line word, with <proxy> pointing to the proxy being parsed, and <defpx> to the
418 * default proxy or NULL.
419 */
420static int proxy_parse_declare(char **args, int section, struct proxy *curpx,
421 struct proxy *defpx, const char *file, int line,
422 char **err)
423{
424 /* Capture keyword wannot be declared in a default proxy. */
425 if (curpx == defpx) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800426 memprintf(err, "'%s' not available in default section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200427 return -1;
428 }
429
Joseph Herlant59dd2952018-11-15 11:46:55 -0800430 /* Capture keywork is only available in frontend. */
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200431 if (!(curpx->cap & PR_CAP_FE)) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800432 memprintf(err, "'%s' only available in frontend or listen section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200433 return -1;
434 }
435
436 /* Check mandatory second keyword. */
437 if (!args[1] || !*args[1]) {
438 memprintf(err, "'%s' needs a second keyword that specify the type of declaration ('capture')", args[0]);
439 return -1;
440 }
441
Joseph Herlant59dd2952018-11-15 11:46:55 -0800442 /* Actually, declare is only available for declaring capture
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200443 * slot, but in the future it can declare maps or variables.
Joseph Herlant59dd2952018-11-15 11:46:55 -0800444 * So, this section permits to check and switch according with
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200445 * the second keyword.
446 */
447 if (strcmp(args[1], "capture") == 0) {
448 char *error = NULL;
449 long len;
450 struct cap_hdr *hdr;
451
452 /* Check the next keyword. */
453 if (!args[2] || !*args[2] ||
454 (strcmp(args[2], "response") != 0 &&
455 strcmp(args[2], "request") != 0)) {
456 memprintf(err, "'%s %s' requires a direction ('request' or 'response')", args[0], args[1]);
457 return -1;
458 }
459
460 /* Check the 'len' keyword. */
461 if (!args[3] || !*args[3] || strcmp(args[3], "len") != 0) {
462 memprintf(err, "'%s %s' requires a capture length ('len')", args[0], args[1]);
463 return -1;
464 }
465
466 /* Check the length value. */
467 if (!args[4] || !*args[4]) {
468 memprintf(err, "'%s %s': 'len' requires a numeric value that represents the "
469 "capture length",
470 args[0], args[1]);
471 return -1;
472 }
473
474 /* convert the length value. */
475 len = strtol(args[4], &error, 10);
476 if (*error != '\0') {
477 memprintf(err, "'%s %s': cannot parse the length '%s'.",
478 args[0], args[1], args[3]);
479 return -1;
480 }
481
482 /* check length. */
483 if (len <= 0) {
484 memprintf(err, "length must be > 0");
485 return -1;
486 }
487
488 /* register the capture. */
Vincent Bernat02779b62016-04-03 13:48:43 +0200489 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200490 hdr->name = NULL; /* not a header capture */
491 hdr->namelen = 0;
492 hdr->len = len;
493 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
494
495 if (strcmp(args[2], "request") == 0) {
496 hdr->next = curpx->req_cap;
497 hdr->index = curpx->nb_req_cap++;
498 curpx->req_cap = hdr;
499 }
500 if (strcmp(args[2], "response") == 0) {
501 hdr->next = curpx->rsp_cap;
502 hdr->index = curpx->nb_rsp_cap++;
503 curpx->rsp_cap = hdr;
504 }
505 return 0;
506 }
507 else {
508 memprintf(err, "unknown declaration type '%s' (supports 'capture')", args[1]);
509 return -1;
510 }
511}
512
Olivier Houcharda254a372019-04-05 15:30:12 +0200513/* This function parses a "retry-on" statement */
514static int
515proxy_parse_retry_on(char **args, int section, struct proxy *curpx,
516 struct proxy *defpx, const char *file, int line,
517 char **err)
518{
519 int i;
520
521 if (!(*args[1])) {
522 memprintf(err, "'%s' needs at least one keyword to specify when to retry", args[0]);
523 return -1;
524 }
525 if (!(curpx->cap & PR_CAP_BE)) {
526 memprintf(err, "'%s' only available in backend or listen section", args[0]);
527 return -1;
528 }
529 curpx->retry_type = 0;
530 for (i = 1; *(args[i]); i++) {
531 if (!strcmp(args[i], "conn-failure"))
532 curpx->retry_type |= PR_RE_CONN_FAILED;
533 else if (!strcmp(args[i], "empty-response"))
534 curpx->retry_type |= PR_RE_DISCONNECTED;
535 else if (!strcmp(args[i], "response-timeout"))
536 curpx->retry_type |= PR_RE_TIMEOUT;
537 else if (!strcmp(args[i], "404"))
538 curpx->retry_type |= PR_RE_404;
539 else if (!strcmp(args[i], "408"))
540 curpx->retry_type |= PR_RE_408;
541 else if (!strcmp(args[i], "425"))
542 curpx->retry_type |= PR_RE_425;
543 else if (!strcmp(args[i], "500"))
544 curpx->retry_type |= PR_RE_500;
545 else if (!strcmp(args[i], "501"))
546 curpx->retry_type |= PR_RE_501;
547 else if (!strcmp(args[i], "502"))
548 curpx->retry_type |= PR_RE_502;
549 else if (!strcmp(args[i], "503"))
550 curpx->retry_type |= PR_RE_503;
551 else if (!strcmp(args[i], "504"))
552 curpx->retry_type |= PR_RE_504;
Olivier Houchard865d8392019-05-03 22:46:27 +0200553 else if (!strcmp(args[i], "0rtt-rejected"))
554 curpx->retry_type |= PR_RE_EARLY_ERROR;
Olivier Houcharde3249a92019-05-03 23:01:47 +0200555 else if (!strcmp(args[i], "junk-response"))
556 curpx->retry_type |= PR_RE_JUNK_REQUEST;
Olivier Houchardddf0e032019-05-10 18:05:40 +0200557 else if (!(strcmp(args[i], "all-retryable-errors")))
558 curpx->retry_type |= PR_RE_CONN_FAILED | PR_RE_DISCONNECTED |
559 PR_RE_TIMEOUT | PR_RE_500 | PR_RE_502 |
560 PR_RE_503 | PR_RE_504 | PR_RE_EARLY_ERROR |
561 PR_RE_JUNK_REQUEST;
Olivier Houcharda254a372019-04-05 15:30:12 +0200562 else if (!strcmp(args[i], "none")) {
563 if (i != 1 || *args[i + 1]) {
564 memprintf(err, "'%s' 'none' keyworld only usable alone", args[0]);
565 return -1;
566 }
567 } else {
568 memprintf(err, "'%s': unknown keyword '%s'", args[0], args[i]);
569 return -1;
570 }
571
572 }
573
574
575 return 0;
576}
577
Willy Tarreauf79d9502014-03-15 07:22:35 +0100578/* This function inserts proxy <px> into the tree of known proxies. The proxy's
579 * name is used as the storing key so it must already have been initialized.
580 */
581void proxy_store_name(struct proxy *px)
582{
583 px->conf.by_name.key = px->id;
584 ebis_insert(&proxy_by_name, &px->conf.by_name);
585}
586
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200587/* Returns a pointer to the first proxy matching capabilities <cap> and id
588 * <id>. NULL is returned if no match is found. If <table> is non-zero, it
589 * only considers proxies having a table.
Willy Tarreaubc216c42011-08-02 11:25:54 +0200590 */
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200591struct proxy *proxy_find_by_id(int id, int cap, int table)
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200592{
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200593 struct eb32_node *n;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200594
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200595 for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) {
596 struct proxy *px = container_of(n, struct proxy, conf.id);
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100597
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200598 if (px->uuid != id)
599 break;
Alex Williams96532db2009-11-01 21:27:13 -0500600
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200601 if ((px->cap & cap) != cap)
602 continue;
Alex Williams96532db2009-11-01 21:27:13 -0500603
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100604 if (table && (!px->table || !px->table->size))
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200605 continue;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100606
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200607 return px;
608 }
609 return NULL;
610}
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100611
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200612/* Returns a pointer to the first proxy matching either name <name>, or id
613 * <name> if <name> begins with a '#'. NULL is returned if no match is found.
614 * If <table> is non-zero, it only considers proxies having a table.
615 */
616struct proxy *proxy_find_by_name(const char *name, int cap, int table)
617{
618 struct proxy *curproxy;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200619
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200620 if (*name == '#') {
621 curproxy = proxy_find_by_id(atoi(name + 1), cap, table);
622 if (curproxy)
Willy Tarreauc739aa82015-05-26 11:35:41 +0200623 return curproxy;
Alex Williams96532db2009-11-01 21:27:13 -0500624 }
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100625 else {
626 struct ebpt_node *node;
627
628 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
629 curproxy = container_of(node, struct proxy, conf.by_name);
Alex Williams96532db2009-11-01 21:27:13 -0500630
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100631 if (strcmp(curproxy->id, name) != 0)
632 break;
633
634 if ((curproxy->cap & cap) != cap)
635 continue;
636
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100637 if (table && (!curproxy->table || !curproxy->table->size))
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200638 continue;
639
Willy Tarreauc739aa82015-05-26 11:35:41 +0200640 return curproxy;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100641 }
642 }
Willy Tarreauc739aa82015-05-26 11:35:41 +0200643 return NULL;
Alex Williams96532db2009-11-01 21:27:13 -0500644}
645
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200646/* Finds the best match for a proxy with capabilities <cap>, name <name> and id
647 * <id>. At most one of <id> or <name> may be different provided that <cap> is
648 * valid. Either <id> or <name> may be left unspecified (0). The purpose is to
649 * find a proxy based on some information from a previous configuration, across
650 * reloads or during information exchange between peers.
651 *
652 * Names are looked up first if present, then IDs are compared if present. In
653 * case of an inexact match whatever is forced in the configuration has
654 * precedence in the following order :
655 * - 1) forced ID (proves a renaming / change of proxy type)
656 * - 2) proxy name+type (may indicate a move if ID differs)
657 * - 3) automatic ID+type (may indicate a renaming)
658 *
659 * Depending on what is found, we can end up in the following situations :
660 *
661 * name id cap | possible causes
662 * -------------+-----------------
663 * -- -- -- | nothing found
664 * -- -- ok | nothing found
665 * -- ok -- | proxy deleted, ID points to next one
666 * -- ok ok | proxy renamed, or deleted with ID pointing to next one
667 * ok -- -- | proxy deleted, but other half with same name still here (before)
668 * ok -- ok | proxy's ID changed (proxy moved in the config file)
669 * ok ok -- | proxy deleted, but other half with same name still here (after)
670 * ok ok ok | perfect match
671 *
672 * Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits :
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200673 * - PR_FBM_MISMATCH_ID : proxy was found but ID differs
674 * (and ID was not zero)
675 * - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs
676 * (and name was not NULL)
677 * - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with
678 * the same name and/or id
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200679 *
680 * Only a valid proxy is returned. If capabilities do not match, NULL is
681 * returned. The caller can check <diff> to report detailed warnings / errors,
682 * and decide whether or not to use what was found.
683 */
684struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff)
685{
686 struct proxy *byname;
687 struct proxy *byid;
688
689 if (!name && !id)
690 return NULL;
691
692 if (diff)
693 *diff = 0;
694
695 byname = byid = NULL;
696
697 if (name) {
698 byname = proxy_find_by_name(name, cap, 0);
699 if (byname && (!id || byname->uuid == id))
700 return byname;
701 }
702
Joseph Herlant59dd2952018-11-15 11:46:55 -0800703 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200704 * - name not set
705 * - name set but not found
706 * - name found, but ID doesn't match.
707 */
708 if (id) {
709 byid = proxy_find_by_id(id, cap, 0);
710 if (byid) {
711 if (byname) {
712 /* id+type found, name+type found, but not all 3.
713 * ID wins only if forced, otherwise name wins.
714 */
715 if (byid->options & PR_O_FORCED_ID) {
716 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200717 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200718 return byid;
719 }
720 else {
721 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200722 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200723 return byname;
724 }
725 }
726
Joseph Herlant59dd2952018-11-15 11:46:55 -0800727 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200728 * - name not set
729 * - name set but not found
730 */
731 if (name && diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200732 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200733 return byid;
734 }
735
736 /* ID not found */
737 if (byname) {
738 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200739 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200740 return byname;
741 }
742 }
743
Joseph Herlant59dd2952018-11-15 11:46:55 -0800744 /* All remaining possibilities will lead to NULL. If we can report more
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200745 * detailed information to the caller about changed types and/or name,
746 * we'll do it. For example, we could detect that "listen foo" was
747 * split into "frontend foo_ft" and "backend foo_bk" if IDs are forced.
748 * - name not set, ID not found
749 * - name not found, ID not set
750 * - name not found, ID not found
751 */
752 if (!diff)
753 return NULL;
754
755 if (name) {
756 byname = proxy_find_by_name(name, 0, 0);
757 if (byname && (!id || byname->uuid == id))
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200758 *diff |= PR_FBM_MISMATCH_PROXYTYPE;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200759 }
760
761 if (id) {
762 byid = proxy_find_by_id(id, 0, 0);
763 if (byid) {
764 if (!name)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200765 *diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200766 else if (byid->options & PR_O_FORCED_ID)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200767 *diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200768 /* otherwise it's a different proxy that was returned */
769 }
770 }
771 return NULL;
772}
773
Willy Tarreaubaaee002006-06-26 02:48:02 +0200774/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100775 * This function finds a server with matching name within selected proxy.
776 * It also checks if there are more matching servers with
777 * requested name as this often leads into unexpected situations.
778 */
779
780struct server *findserver(const struct proxy *px, const char *name) {
781
782 struct server *cursrv, *target = NULL;
783
784 if (!px)
785 return NULL;
786
787 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
788 if (strcmp(cursrv->id, name))
789 continue;
790
791 if (!target) {
792 target = cursrv;
793 continue;
794 }
795
Christopher Faulet767a84b2017-11-24 16:50:31 +0100796 ha_alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
797 name, px->id);
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100798
799 return NULL;
800 }
801
802 return target;
803}
804
Willy Tarreauff01a212009-03-15 13:46:16 +0100805/* This function checks that the designated proxy has no http directives
806 * enabled. It will output a warning if there are, and will fix some of them.
807 * It returns the number of fatal errors encountered. This should be called
808 * at the end of the configuration parsing if the proxy is not in http mode.
809 * The <file> argument is used to construct the error message.
810 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200811int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100812{
813 if (curproxy->cookie_name != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100814 ha_warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
815 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100816 }
Willy Tarreauff01a212009-03-15 13:46:16 +0100817 if (curproxy->monitor_uri != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100818 ha_warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
819 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100820 }
Willy Tarreauf3e49f92009-10-03 12:21:20 +0200821 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100822 curproxy->lbprm.algo &= ~BE_LB_ALGO;
823 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100824 ha_warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
825 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100826 }
Willy Tarreau17804162009-11-09 21:27:51 +0100827 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
828 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Christopher Faulet767a84b2017-11-24 16:50:31 +0100829 ha_warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
830 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
831 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau17804162009-11-09 21:27:51 +0100832 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200833 if (curproxy->conf.logformat_string == default_http_log_format ||
834 curproxy->conf.logformat_string == clf_http_log_format) {
835 /* Note: we don't change the directive's file:line number */
836 curproxy->conf.logformat_string = default_tcp_log_format;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100837 ha_warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
838 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
839 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau196729e2012-05-31 19:30:26 +0200840 }
841
Willy Tarreauff01a212009-03-15 13:46:16 +0100842 return 0;
843}
844
Willy Tarreau237250c2011-07-29 01:49:03 +0200845/* Perform the most basic initialization of a proxy :
846 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +0200847 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +0200848 */
849void init_new_proxy(struct proxy *p)
850{
851 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100852 p->obj_type = OBJ_TYPE_PROXY;
Patrick Hemmer0355dab2018-05-11 12:52:31 -0400853 p->pendconns = EB_ROOT;
Willy Tarreau237250c2011-07-29 01:49:03 +0200854 LIST_INIT(&p->acl);
855 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200856 LIST_INIT(&p->http_res_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200857 LIST_INIT(&p->redirect_rules);
858 LIST_INIT(&p->mon_fail_cond);
859 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200860 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200861 LIST_INIT(&p->persist_rules);
862 LIST_INIT(&p->sticking_rules);
863 LIST_INIT(&p->storersp_rules);
864 LIST_INIT(&p->tcp_req.inspect_rules);
865 LIST_INIT(&p->tcp_rep.inspect_rules);
866 LIST_INIT(&p->tcp_req.l4_rules);
Willy Tarreau620408f2016-10-21 16:37:51 +0200867 LIST_INIT(&p->tcp_req.l5_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +0200868 LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +0200869 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +0100870 LIST_INIT(&p->logformat);
Dragan Dosen0b85ece2015-09-25 19:17:44 +0200871 LIST_INIT(&p->logformat_sd);
William Lallemanda73203e2012-03-12 12:48:57 +0100872 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200873 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +0200874 LIST_INIT(&p->conf.listeners);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200875 LIST_INIT(&p->conf.args.list);
Baptiste Assmann5ecb77f2013-10-06 23:24:13 +0200876 LIST_INIT(&p->tcpcheck_rules);
Christopher Faulet443ea1a2016-02-04 13:40:26 +0100877 LIST_INIT(&p->filter_configs);
Willy Tarreau237250c2011-07-29 01:49:03 +0200878
879 /* Timeouts are defined as -1 */
880 proxy_reset_timeouts(p);
881 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +0200882
883 /* initial uuid is unassigned (-1) */
884 p->uuid = -1;
Christopher Fauletff8abcd2017-06-02 15:33:24 +0200885
Olivier Houcharda254a372019-04-05 15:30:12 +0200886 /* Default to only allow L4 retries */
887 p->retry_type = PR_RE_CONN_FAILED;
888
Christopher Faulet2a944ee2017-11-07 10:42:54 +0100889 HA_SPIN_INIT(&p->lock);
Willy Tarreau237250c2011-07-29 01:49:03 +0200890}
891
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100892/*
Willy Tarreau2ff76222007-04-09 19:29:56 +0200893 * This function creates all proxy sockets. It should be done very early,
894 * typically before privileges are dropped. The sockets will be registered
895 * but not added to any fd_set, in order not to loose them across the fork().
Willy Tarreau562515c2011-07-25 08:11:52 +0200896 * The proxies also start in READY state because they all have their listeners
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200897 * bound.
Willy Tarreau2ff76222007-04-09 19:29:56 +0200898 *
899 * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
900 * Retryable errors will only be printed if <verbose> is not zero.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200901 */
902int start_proxies(int verbose)
903{
904 struct proxy *curproxy;
905 struct listener *listener;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100906 int lerr, err = ERR_NONE;
907 int pxerr;
908 char msg[100];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200909
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100910 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200911 if (curproxy->state != PR_STNEW)
912 continue; /* already initialized */
913
914 pxerr = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +0200915 list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
Willy Tarreaue6b98942007-10-29 01:09:36 +0100916 if (listener->state != LI_ASSIGNED)
917 continue; /* already started */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200918
Emeric Bruncf20bf12010-10-22 16:06:11 +0200919 lerr = listener->proto->bind(listener, msg, sizeof(msg));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200920
Willy Tarreaue6b98942007-10-29 01:09:36 +0100921 /* errors are reported if <verbose> is set or if they are fatal */
922 if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
923 if (lerr & ERR_ALERT)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100924 ha_alert("Starting %s %s: %s\n",
925 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaue6b98942007-10-29 01:09:36 +0100926 else if (lerr & ERR_WARN)
Christopher Faulet767a84b2017-11-24 16:50:31 +0100927 ha_warning("Starting %s %s: %s\n",
928 proxy_type_str(curproxy), curproxy->id, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200929 }
930
Willy Tarreaue6b98942007-10-29 01:09:36 +0100931 err |= lerr;
932 if (lerr & (ERR_ABORT | ERR_FATAL)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200933 pxerr |= 1;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100934 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200935 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100936 else if (lerr & ERR_CODE) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200937 pxerr |= 1;
938 continue;
939 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200940 }
941
942 if (!pxerr) {
Willy Tarreau562515c2011-07-25 08:11:52 +0200943 curproxy->state = PR_STREADY;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200944 send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
945 }
Willy Tarreaue6b98942007-10-29 01:09:36 +0100946
947 if (err & ERR_ABORT)
948 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200949 }
950
951 return err;
952}
953
954
955/*
Willy Tarreau918ff602011-07-25 16:33:49 +0200956 * This is the proxy management task. It enables proxies when there are enough
Willy Tarreau87b09662015-04-03 00:22:06 +0200957 * free streams, or stops them when the table is full. It is designed to be
Willy Tarreau918ff602011-07-25 16:33:49 +0200958 * called as a task which is woken up upon stopping or when rate limiting must
959 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200960 */
Olivier Houchard9f6af332018-05-25 14:04:04 +0200961struct task *manage_proxy(struct task *t, void *context, unsigned short state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200962{
Olivier Houchard9f6af332018-05-25 14:04:04 +0200963 struct proxy *p = context;
Willy Tarreau918ff602011-07-25 16:33:49 +0200964 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +0100965 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200966
Willy Tarreau918ff602011-07-25 16:33:49 +0200967 /* We should periodically try to enable listeners waiting for a
968 * global resource here.
969 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200970
Willy Tarreau918ff602011-07-25 16:33:49 +0200971 /* first, let's check if we need to stop the proxy */
972 if (unlikely(stopping && p->state != PR_STSTOPPED)) {
973 int t;
974 t = tick_remain(now_ms, p->stop_time);
975 if (t == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100976 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
977 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau918ff602011-07-25 16:33:49 +0200978 send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
979 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
980 stop_proxy(p);
981 /* try to free more memory */
Willy Tarreaubafbe012017-11-24 17:34:44 +0100982 pool_gc(NULL);
Willy Tarreau918ff602011-07-25 16:33:49 +0200983 }
984 else {
985 next = tick_first(next, p->stop_time);
986 }
987 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +0200988
Willy Tarreau3a925c12013-09-04 17:54:01 +0200989 /* If the proxy holds a stick table, we need to purge all unused
990 * entries. These are all the ones in the table with ref_cnt == 0
991 * and all the ones in the pool used to allocate new entries. Any
Willy Tarreau87b09662015-04-03 00:22:06 +0200992 * entry attached to an existing stream waiting for a store will
Willy Tarreau3a925c12013-09-04 17:54:01 +0200993 * be in neither list. Any entry being dumped will have ref_cnt > 0.
994 * However we protect tables that are being synced to peers.
995 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100996 if (unlikely(stopping && p->state == PR_STSTOPPED && p->table && p->table->current)) {
997 if (!p->table->syncing) {
998 stktable_trash_oldest(p->table, p->table->current);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100999 pool_gc(NULL);
Willy Tarreau3a925c12013-09-04 17:54:01 +02001000 }
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001001 if (p->table->current) {
Willy Tarreau3a925c12013-09-04 17:54:01 +02001002 /* some entries still remain, let's recheck in one second */
1003 next = tick_first(next, tick_add(now_ms, 1000));
1004 }
1005 }
1006
Willy Tarreau918ff602011-07-25 16:33:49 +02001007 /* the rest below is just for frontends */
1008 if (!(p->cap & PR_CAP_FE))
1009 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001010
Willy Tarreau918ff602011-07-25 16:33:49 +02001011 /* check the various reasons we may find to block the frontend */
1012 if (unlikely(p->feconn >= p->maxconn)) {
1013 if (p->state == PR_STREADY)
1014 p->state = PR_STFULL;
1015 goto out;
1016 }
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001017
Willy Tarreau918ff602011-07-25 16:33:49 +02001018 /* OK we have no reason to block, so let's unblock if we were blocking */
1019 if (p->state == PR_STFULL)
1020 p->state = PR_STREADY;
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001021
Willy Tarreau918ff602011-07-25 16:33:49 +02001022 if (p->fe_sps_lim &&
1023 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
1024 /* we're blocking because a limit was reached on the number of
1025 * requests/s on the frontend. We want to re-check ASAP, which
1026 * means in 1 ms before estimated expiration date, because the
1027 * timer will have settled down.
1028 */
1029 next = tick_first(next, tick_add(now_ms, wait));
1030 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001031 }
Willy Tarreau918ff602011-07-25 16:33:49 +02001032
1033 /* The proxy is not limited so we can re-enable any waiting listener */
1034 if (!LIST_ISEMPTY(&p->listener_queue))
1035 dequeue_all_listeners(&p->listener_queue);
1036 out:
1037 t->expire = next;
1038 task_queue(t);
1039 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001040}
1041
1042
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001043static int proxy_parse_hard_stop_after(char **args, int section_type, struct proxy *curpx,
1044 struct proxy *defpx, const char *file, int line,
1045 char **err)
1046{
1047 const char *res;
1048
1049 if (!*args[1]) {
1050 memprintf(err, "'%s' expects <time> as argument.\n", args[0]);
1051 return -1;
1052 }
1053 res = parse_time_err(args[1], &global.hard_stop_after, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02001054 if (res == PARSE_TIME_OVER) {
1055 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
1056 args[1], args[0]);
1057 return -1;
1058 }
1059 else if (res == PARSE_TIME_UNDER) {
1060 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
1061 args[1], args[0]);
1062 return -1;
1063 }
1064 else if (res) {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001065 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
1066 return -1;
1067 }
1068 return 0;
1069}
1070
Olivier Houchard9f6af332018-05-25 14:04:04 +02001071struct task *hard_stop(struct task *t, void *context, unsigned short state)
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001072{
1073 struct proxy *p;
1074 struct stream *s;
1075
1076 if (killed) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001077 ha_warning("Some tasks resisted to hard-stop, exiting now.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001078 send_log(NULL, LOG_WARNING, "Some tasks resisted to hard-stop, exiting now.\n");
Willy Tarreau7067b3a2019-06-02 11:11:29 +02001079 killed = 2;
1080 t->expire = TICK_ETERNITY;
1081 return t;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001082 }
1083
Christopher Faulet767a84b2017-11-24 16:50:31 +01001084 ha_warning("soft-stop running for too long, performing a hard-stop.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001085 send_log(NULL, LOG_WARNING, "soft-stop running for too long, performing a hard-stop.\n");
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001086 p = proxies_list;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001087 while (p) {
1088 if ((p->cap & PR_CAP_FE) && (p->feconn > 0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001089 ha_warning("Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1090 p->id, p->feconn);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001091 send_log(p, LOG_WARNING, "Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1092 p->id, p->feconn);
1093 }
1094 p = p->next;
1095 }
1096 list_for_each_entry(s, &streams, list) {
1097 stream_shutdown(s, SF_ERR_KILLED);
1098 }
1099
1100 killed = 1;
1101 t->expire = tick_add(now_ms, MS_TO_TICKS(1000));
1102 return t;
1103}
1104
Willy Tarreaubaaee002006-06-26 02:48:02 +02001105/*
1106 * this function disables health-check servers so that the process will quickly be ignored
1107 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
1108 * time will not be used since it would already not listen anymore to the socket.
1109 */
1110void soft_stop(void)
1111{
1112 struct proxy *p;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001113 struct peers *prs;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001114 struct task *task;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001115
1116 stopping = 1;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001117 if (tick_isset(global.hard_stop_after)) {
Emeric Brunc60def82017-09-27 14:59:38 +02001118 task = task_new(MAX_THREADS_MASK);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001119 if (task) {
1120 task->process = hard_stop;
1121 task_schedule(task, tick_add(now_ms, global.hard_stop_after));
1122 }
1123 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001124 ha_alert("out of memory trying to allocate the hard-stop task.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001125 }
1126 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001127 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001128 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001129 while (p) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001130 /* Zombie proxy, let's close the file descriptors */
1131 if (p->state == PR_STSTOPPED &&
1132 !LIST_ISEMPTY(&p->conf.listeners) &&
1133 LIST_ELEM(p->conf.listeners.n,
1134 struct listener *, by_fe)->state >= LI_ZOMBIE) {
1135 struct listener *l;
1136 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1137 if (l->state >= LI_ZOMBIE)
1138 close(l->fd);
1139 l->state = LI_INIT;
1140 }
1141 }
1142
Willy Tarreaubaaee002006-06-26 02:48:02 +02001143 if (p->state != PR_STSTOPPED) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001144 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 +02001145 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 +02001146 p->stop_time = tick_add(now_ms, p->grace);
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001147
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001148 /* Note: do not wake up stopped proxies' task nor their tables'
1149 * tasks as these ones might point to already released entries.
1150 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001151 if (p->table && p->table->size && p->table->sync_task)
1152 task_wakeup(p->table->sync_task, TASK_WOKEN_MSG);
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001153
1154 if (p->task)
1155 task_wakeup(p->task, TASK_WOKEN_MSG);
1156 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001157 p = p->next;
1158 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001159
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001160 prs = cfg_peers;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001161 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001162 if (prs->peers_fe)
1163 stop_proxy(prs->peers_fe);
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001164 prs = prs->next;
1165 }
Willy Tarreaud0807c32010-08-27 18:26:11 +02001166 /* signal zero is used to broadcast the "stopping" event */
1167 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001168}
1169
1170
Willy Tarreaube58c382011-07-24 18:28:10 +02001171/* Temporarily disables listening on all of the proxy's listeners. Upon
1172 * success, the proxy enters the PR_PAUSED state. If disabling at least one
1173 * listener returns an error, then the proxy state is set to PR_STERROR
Willy Tarreauce8fe252011-09-07 19:14:57 +02001174 * because we don't know how to resume from this. The function returns 0
1175 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001176 */
Willy Tarreauce8fe252011-09-07 19:14:57 +02001177int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001178{
1179 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +02001180
1181 if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
1182 p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
1183 return 1;
1184
Christopher Faulet767a84b2017-11-24 16:50:31 +01001185 ha_warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001186 send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
1187
Willy Tarreau4348fad2012-09-20 16:48:07 +02001188 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreaube58c382011-07-24 18:28:10 +02001189 if (!pause_listener(l))
Willy Tarreaubaaee002006-06-26 02:48:02 +02001190 p->state = PR_STERROR;
1191 }
Willy Tarreauce8fe252011-09-07 19:14:57 +02001192
1193 if (p->state == PR_STERROR) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001194 ha_warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001195 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
1196 return 0;
1197 }
1198
1199 p->state = PR_STPAUSED;
1200 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +02001201}
1202
Olivier Houchard1fc05162017-04-06 01:05:05 +02001203/* This function makes the proxy unusable, but keeps the listening sockets
1204 * opened, so that if any process requests them, we are able to serve them.
1205 * This should only be called early, before we started accepting requests.
1206 */
1207void zombify_proxy(struct proxy *p)
1208{
1209 struct listener *l;
1210 struct listener *first_to_listen = NULL;
1211
1212 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1213 enum li_state oldstate = l->state;
1214
1215 unbind_listener_no_close(l);
1216 if (l->state >= LI_ASSIGNED) {
1217 delete_listener(l);
Olivier Houchard1fc05162017-04-06 01:05:05 +02001218 }
1219 /*
1220 * Pretend we're still up and running so that the fd
1221 * will be sent if asked.
1222 */
1223 l->state = LI_ZOMBIE;
1224 if (!first_to_listen && oldstate >= LI_LISTEN)
1225 first_to_listen = l;
1226 }
1227 /* Quick hack : at stop time, to know we have to close the sockets
1228 * despite the proxy being marked as stopped, make the first listener
1229 * of the listener list an active one, so that we don't have to
1230 * parse the whole list to be sure.
1231 */
1232 if (first_to_listen && LIST_ELEM(p->conf.listeners.n,
1233 struct listener *, by_fe) != first_to_listen) {
1234 LIST_DEL(&l->by_fe);
1235 LIST_ADD(&p->conf.listeners, &l->by_fe);
1236 }
1237
1238 p->state = PR_STSTOPPED;
1239}
Willy Tarreauda250db2008-10-12 12:07:48 +02001240
1241/*
1242 * This function completely stops a proxy and releases its listeners. It has
1243 * to be called when going down in order to release the ports so that another
1244 * process may bind to them. It must also be called on disabled proxies at the
William Lallemandc59f9882018-11-16 16:57:21 +01001245 * end of start-up. If all listeners are closed, the proxy is set to the
Willy Tarreauda250db2008-10-12 12:07:48 +02001246 * PR_STSTOPPED state.
1247 */
1248void stop_proxy(struct proxy *p)
1249{
1250 struct listener *l;
William Lallemandc59f9882018-11-16 16:57:21 +01001251 int nostop = 0;
Willy Tarreauda250db2008-10-12 12:07:48 +02001252
Willy Tarreau4348fad2012-09-20 16:48:07 +02001253 list_for_each_entry(l, &p->conf.listeners, by_fe) {
William Lallemandc59f9882018-11-16 16:57:21 +01001254 if (l->options & LI_O_NOSTOP) {
1255 HA_ATOMIC_ADD(&unstoppable_jobs, 1);
1256 nostop = 1;
1257 continue;
1258 }
Willy Tarreauda250db2008-10-12 12:07:48 +02001259 unbind_listener(l);
1260 if (l->state >= LI_ASSIGNED) {
1261 delete_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001262 }
1263 }
William Lallemandc59f9882018-11-16 16:57:21 +01001264 if (!nostop)
1265 p->state = PR_STSTOPPED;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001266}
1267
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001268/* This function resumes listening on the specified proxy. It scans all of its
1269 * listeners and tries to enable them all. If any of them fails, the proxy is
1270 * put back to the paused state. It returns 1 upon success, or zero if an error
1271 * is encountered.
1272 */
1273int resume_proxy(struct proxy *p)
1274{
1275 struct listener *l;
1276 int fail;
1277
1278 if (p->state != PR_STPAUSED)
1279 return 1;
1280
Christopher Faulet767a84b2017-11-24 16:50:31 +01001281 ha_warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001282 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
1283
1284 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +02001285 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001286 if (!resume_listener(l)) {
1287 int port;
1288
1289 port = get_host_port(&l->addr);
1290 if (port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001291 ha_warning("Port %d busy while trying to enable %s %s.\n",
1292 port, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001293 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
1294 port, proxy_cap_str(p->cap), p->id);
1295 }
1296 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001297 ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
1298 l->luid, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001299 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
1300 l->luid, proxy_cap_str(p->cap), p->id);
1301 }
1302
1303 /* Another port might have been enabled. Let's stop everything. */
1304 fail = 1;
1305 break;
1306 }
1307 }
1308
1309 p->state = PR_STREADY;
1310 if (fail) {
1311 pause_proxy(p);
1312 return 0;
1313 }
1314 return 1;
1315}
1316
Willy Tarreaubaaee002006-06-26 02:48:02 +02001317/*
1318 * This function temporarily disables listening so that another new instance
1319 * can start listening. It is designed to be called upon reception of a
1320 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
1321 * the proxy, or a SIGTTIN can be sent to listen again.
1322 */
1323void pause_proxies(void)
1324{
1325 int err;
1326 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001327 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001328
1329 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001330 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001331 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001332 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +02001333 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001334 p = p->next;
1335 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001336
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001337 prs = cfg_peers;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001338 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001339 if (prs->peers_fe)
1340 err |= !pause_proxy(prs->peers_fe);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001341 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001342 }
1343
Willy Tarreaubaaee002006-06-26 02:48:02 +02001344 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001345 ha_warning("Some proxies refused to pause, performing soft stop now.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02001346 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
1347 soft_stop();
1348 }
1349}
1350
1351
1352/*
1353 * This function reactivates listening. This can be used after a call to
1354 * sig_pause(), for example when a new instance has failed starting up.
1355 * It is designed to be called upon reception of a SIGTTIN.
1356 */
Willy Tarreaube58c382011-07-24 18:28:10 +02001357void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001358{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001359 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001360 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001361 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001362
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001363 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001364 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001365 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001366 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001367 err |= !resume_proxy(p);
1368 p = p->next;
1369 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001370
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001371 prs = cfg_peers;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001372 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001373 if (prs->peers_fe)
1374 err |= !resume_proxy(prs->peers_fe);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001375 prs = prs->next;
1376 }
Willy Tarreaube58c382011-07-24 18:28:10 +02001377
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001378 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001379 ha_warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001380 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 +02001381 }
1382}
1383
Willy Tarreau87b09662015-04-03 00:22:06 +02001384/* Set current stream's backend to <be>. Nothing is done if the
1385 * stream already had a backend assigned, which is indicated by
Willy Tarreaue7dff022015-04-03 01:14:29 +02001386 * s->flags & SF_BE_ASSIGNED.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001387 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001388 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001389 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001390int stream_set_backend(struct stream *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001391{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001392 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001393 return 1;
Christopher Faulet41179042016-06-21 11:54:52 +02001394
1395 if (flt_set_stream_backend(s, be) < 0)
1396 return 0;
1397
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001398 s->be = be;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001399 HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
1400 HA_ATOMIC_ADD(&be->beconn, 1));
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001401 proxy_inc_be_ctr(be);
1402
Willy Tarreau87b09662015-04-03 00:22:06 +02001403 /* assign new parameters to the stream from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +02001404 s->si[1].flags &= ~SI_FL_INDEP_STR;
1405 if (be->options2 & PR_O2_INDEPSTR)
1406 s->si[1].flags |= SI_FL_INDEP_STR;
1407
Hongbo Longe39683c2017-03-10 18:41:51 +01001408 if (tick_isset(be->timeout.serverfin))
1409 s->si[1].hcto = be->timeout.serverfin;
1410
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001411 /* We want to enable the backend-specific analysers except those which
1412 * were already run as part of the frontend/listener. Note that it would
1413 * be more reliable to store the list of analysers that have been run,
1414 * but what we do here is OK for now.
1415 */
Christopher Faulet70e2f272017-01-09 16:33:19 +01001416 s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001417
Willy Tarreau51aecc72009-07-12 09:47:04 +02001418 /* If the target backend requires HTTP processing, we have to allocate
Christopher Faulet711ed6a2019-07-16 14:16:10 +02001419 * the HTTP transaction if we did not have one.
Willy Tarreau51aecc72009-07-12 09:47:04 +02001420 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001421 if (unlikely(!s->txn && be->http_needed)) {
1422 if (unlikely(!http_alloc_txn(s)))
Willy Tarreau51aecc72009-07-12 09:47:04 +02001423 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +02001424
1425 /* and now initialize the HTTP transaction state */
1426 http_init_txn(s);
Willy Tarreau51aecc72009-07-12 09:47:04 +02001427 }
1428
Christopher Faulet309c6412015-12-02 09:57:32 +01001429 /* Be sure to filter request headers if the backend is an HTTP proxy and
1430 * if there are filters attached to the stream. */
1431 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +01001432 s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +01001433
Willy Tarreaueee5b512015-04-03 23:46:31 +02001434 if (s->txn) {
Christopher Fauletbbe68542019-04-08 10:53:51 +02001435 /* If we chain a TCP frontend to an HTX backend, we must upgrade
1436 * the client mux */
Christopher Faulet60d29b32019-07-15 15:00:25 +02001437 if (!IS_HTX_STRM(s) && be->mode == PR_MODE_HTTP) {
Christopher Fauletbbe68542019-04-08 10:53:51 +02001438 struct connection *conn = objt_conn(strm_sess(s)->origin);
1439 struct conn_stream *cs = objt_cs(s->si[0].end);
1440
1441 if (conn && cs) {
1442 si_rx_endp_more(&s->si[0]);
Olivier Houchard2ab3dad2019-07-03 13:08:18 +02001443 /* Make sure we're unsubscribed, the the new
1444 * mux will probably want to subscribe to
1445 * the underlying XPRT
1446 */
1447 if (s->si[0].wait_event.events)
1448 conn->mux->unsubscribe(cs, s->si[0].wait_event.events,
1449 &s->si[0].wait_event);
Christopher Fauletc985f6c2019-07-15 11:42:52 +02001450 if (conn_upgrade_mux_fe(conn, cs, &s->req.buf, ist(""), PROTO_MODE_HTTP) == -1)
Christopher Fauletbbe68542019-04-08 10:53:51 +02001451 return 0;
1452 s->flags |= SF_HTX;
1453 }
1454 }
1455
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001456 /* we may request to parse a request body */
Christopher Faulet711ed6a2019-07-16 14:16:10 +02001457 if (be->options & PR_O_WREQ_BODY)
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001458 s->req.analysers |= AN_REQ_HTTP_BODY;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001459 }
1460
1461 s->flags |= SF_BE_ASSIGNED;
Willy Tarreau96e31212011-05-30 18:10:30 +02001462 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001463 s->req.flags |= CF_NEVER_WAIT;
1464 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02001465 }
1466
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001467 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001468}
1469
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001470/* Capture a bad request or response and archive it in the proxy's structure.
1471 * It is relatively protocol-agnostic so it requires that a number of elements
1472 * are passed :
1473 * - <proxy> is the proxy where the error was detected and where the snapshot
1474 * needs to be stored
Joseph Herlant59dd2952018-11-15 11:46:55 -08001475 * - <is_back> indicates that the error happened when receiving the response
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001476 * - <other_end> is a pointer to the proxy on the other side when known
1477 * - <target> is the target of the connection, usually a server or a proxy
1478 * - <sess> is the session which experienced the error
1479 * - <ctx> may be NULL or should contain any info relevant to the protocol
1480 * - <buf> is the buffer containing the offending data
1481 * - <buf_ofs> is the position of this buffer's input data in the input
1482 * stream, starting at zero. It may be passed as zero if unknown.
1483 * - <buf_out> is the portion of <buf->data> which was already forwarded and
1484 * which precedes the buffer's input. The buffer's input starts at
1485 * buf->head + buf_out.
1486 * - <err_pos> is the pointer to the faulty byte in the buffer's input.
1487 * - <show> is the callback to use to display <ctx>. It may be NULL.
1488 */
1489void proxy_capture_error(struct proxy *proxy, int is_back,
1490 struct proxy *other_end, enum obj_type *target,
1491 const struct session *sess,
1492 const struct buffer *buf, long buf_ofs,
1493 unsigned int buf_out, unsigned int err_pos,
1494 const union error_snapshot_ctx *ctx,
1495 void (*show)(struct buffer *, const struct error_snapshot *))
1496{
1497 struct error_snapshot *es;
1498 unsigned int buf_len;
1499 int len1, len2;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001500 unsigned int ev_id;
1501
1502 ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
1503
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001504 buf_len = b_data(buf) - buf_out;
1505
1506 es = malloc(sizeof(*es) + buf_len);
Willy Tarreauc55015e2018-09-07 19:02:32 +02001507 if (!es)
1508 return;
1509
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001510 es->buf_len = buf_len;
1511 es->ev_id = ev_id;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001512
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001513 len1 = b_size(buf) - buf_len;
1514 if (len1 > buf_len)
1515 len1 = buf_len;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001516
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001517 if (len1) {
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001518 memcpy(es->buf, b_peek(buf, buf_out), len1);
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001519 len2 = buf_len - len1;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001520 if (len2)
1521 memcpy(es->buf + len1, b_orig(buf), len2);
1522 }
1523
1524 es->buf_err = err_pos;
1525 es->when = date; // user-visible date
1526 es->srv = objt_server(target);
1527 es->oe = other_end;
Willy Tarreau026efc72019-07-17 15:20:02 +02001528 if (objt_conn(sess->origin) && conn_get_src(__objt_conn(sess->origin)))
1529 es->src = *__objt_conn(sess->origin)->src;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001530 else
1531 memset(&es->src, 0, sizeof(es->src));
1532
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001533 es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
1534 es->buf_out = buf_out;
1535 es->buf_ofs = buf_ofs;
1536
1537 /* be sure to indicate the offset of the first IN byte */
1538 if (es->buf_ofs >= es->buf_len)
1539 es->buf_ofs -= es->buf_len;
1540 else
1541 es->buf_ofs = 0;
1542
1543 /* protocol-specific part now */
1544 if (ctx)
1545 es->ctx = *ctx;
1546 else
1547 memset(&es->ctx, 0, sizeof(es->ctx));
1548 es->show = show;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001549
1550 /* note: we still lock since we have to be certain that nobody is
1551 * dumping the output while we free.
1552 */
1553 HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
1554 if (is_back) {
1555 es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
1556 } else {
1557 es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
1558 }
1559 free(es);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001560 HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
1561}
1562
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001563/* Configure all proxies which lack a maxconn setting to use the global one by
1564 * default. This avoids the common mistake consisting in setting maxconn only
1565 * in the global section and discovering the hard way that it doesn't propagate
1566 * through the frontends. These values are also propagated through the various
1567 * targetted backends, whose fullconn is finally calculated if not yet set.
1568 */
1569void proxy_adjust_all_maxconn()
1570{
1571 struct proxy *curproxy;
1572 struct switching_rule *swrule1, *swrule2;
1573
1574 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1575 if (curproxy->state == PR_STSTOPPED)
1576 continue;
1577
1578 if (!(curproxy->cap & PR_CAP_FE))
1579 continue;
1580
1581 if (!curproxy->maxconn)
1582 curproxy->maxconn = global.maxconn;
1583
1584 /* update the target backend's fullconn count : default_backend */
1585 if (curproxy->defbe.be)
1586 curproxy->defbe.be->tot_fe_maxconn += curproxy->maxconn;
1587 else if ((curproxy->cap & PR_CAP_LISTEN) == PR_CAP_LISTEN)
1588 curproxy->tot_fe_maxconn += curproxy->maxconn;
1589
1590 list_for_each_entry(swrule1, &curproxy->switching_rules, list) {
1591 /* For each target of switching rules, we update their
1592 * tot_fe_maxconn, except if a previous rule points to
1593 * the same backend or to the default backend.
1594 */
1595 if (swrule1->be.backend != curproxy->defbe.be) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001596 /* note: swrule1->be.backend isn't a backend if the rule
1597 * is dynamic, it's an expression instead, so it must not
1598 * be dereferenced as a backend before being certain it is.
1599 */
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001600 list_for_each_entry(swrule2, &curproxy->switching_rules, list) {
1601 if (swrule2 == swrule1) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001602 if (!swrule1->dynamic)
1603 swrule1->be.backend->tot_fe_maxconn += curproxy->maxconn;
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001604 break;
1605 }
1606 else if (!swrule2->dynamic && swrule2->be.backend == swrule1->be.backend) {
1607 /* there are multiple refs of this backend */
1608 break;
1609 }
1610 }
1611 }
1612 }
1613 }
1614
1615 /* automatically compute fullconn if not set. We must not do it in the
1616 * loop above because cross-references are not yet fully resolved.
1617 */
1618 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1619 if (curproxy->state == PR_STSTOPPED)
1620 continue;
1621
1622 /* If <fullconn> is not set, let's set it to 10% of the sum of
1623 * the possible incoming frontend's maxconns.
1624 */
1625 if (!curproxy->fullconn && (curproxy->cap & PR_CAP_BE)) {
1626 /* we have the sum of the maxconns in <total>. We only
1627 * keep 10% of that sum to set the default fullconn, with
1628 * a hard minimum of 1 (to avoid a divide by zero).
1629 */
1630 curproxy->fullconn = (curproxy->tot_fe_maxconn + 9) / 10;
1631 if (!curproxy->fullconn)
1632 curproxy->fullconn = 1;
1633 }
1634 }
1635}
1636
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001637/* Config keywords below */
1638
Willy Tarreaudc13c112013-06-21 23:16:39 +02001639static struct cfg_kw_list cfg_kws = {ILH, {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001640 { CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001641 { CFG_LISTEN, "timeout", proxy_parse_timeout },
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +02001642 { CFG_LISTEN, "clitimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1643 { CFG_LISTEN, "contimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1644 { CFG_LISTEN, "srvtimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001645 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreauc35362a2014-04-25 13:58:37 +02001646 { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +02001647 { CFG_LISTEN, "declare", proxy_parse_declare },
Olivier Houcharda254a372019-04-05 15:30:12 +02001648 { CFG_LISTEN, "retry-on", proxy_parse_retry_on },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001649 { 0, NULL, NULL },
1650}};
1651
Willy Tarreau0108d902018-11-25 19:14:37 +01001652INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
1653
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001654/* Expects to find a frontend named <arg> and returns it, otherwise displays various
1655 * adequate error messages and returns NULL. This function is designed to be used by
1656 * functions requiring a frontend on the CLI.
1657 */
1658struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
1659{
1660 struct proxy *px;
1661
1662 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001663 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001664 appctx->ctx.cli.msg = "A frontend name is expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001665 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001666 return NULL;
1667 }
1668
1669 px = proxy_fe_by_name(arg);
1670 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001671 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001672 appctx->ctx.cli.msg = "No such frontend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001673 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001674 return NULL;
1675 }
1676 return px;
1677}
1678
Olivier Houchard614f8d72017-03-14 20:08:46 +01001679/* Expects to find a backend named <arg> and returns it, otherwise displays various
1680 * adequate error messages and returns NULL. This function is designed to be used by
1681 * functions requiring a frontend on the CLI.
1682 */
1683struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
1684{
1685 struct proxy *px;
1686
1687 if (!*arg) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001688 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001689 appctx->ctx.cli.msg = "A backend name is expected.\n";
1690 appctx->st0 = CLI_ST_PRINT;
1691 return NULL;
1692 }
1693
1694 px = proxy_be_by_name(arg);
1695 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001696 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001697 appctx->ctx.cli.msg = "No such backend.\n";
1698 appctx->st0 = CLI_ST_PRINT;
1699 return NULL;
1700 }
1701 return px;
1702}
1703
1704
William Lallemanda6c5f332016-11-19 02:25:36 +01001705/* parse a "show servers" CLI line, returns 0 if it wants to start the dump or
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001706 * 1 if it stops immediately. If an argument is specified, it will set the proxy
1707 * pointer into cli.p0 and its ID into cli.i0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001708 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001709static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemanda6c5f332016-11-19 02:25:36 +01001710{
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001711 struct proxy *px;
William Lallemanda6c5f332016-11-19 02:25:36 +01001712
1713 /* check if a backend name has been provided */
1714 if (*args[3]) {
1715 /* read server state from local file */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001716 px = proxy_be_by_name(args[3]);
William Lallemanda6c5f332016-11-19 02:25:36 +01001717
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001718 if (!px) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001719 appctx->ctx.cli.severity = LOG_ERR;
William Lallemanda6c5f332016-11-19 02:25:36 +01001720 appctx->ctx.cli.msg = "Can't find backend.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01001721 appctx->st0 = CLI_ST_PRINT;
William Lallemanda6c5f332016-11-19 02:25:36 +01001722 return 1;
1723 }
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001724 appctx->ctx.cli.p0 = px;
1725 appctx->ctx.cli.i0 = px->uuid;
William Lallemanda6c5f332016-11-19 02:25:36 +01001726 }
1727 return 0;
1728}
1729
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001730/* dumps server state information into <buf> for all the servers found in backend cli.p0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001731 * These information are all the parameters which may change during HAProxy runtime.
1732 * By default, we only export to the last known server state file format.
1733 * These information can be used at next startup to recover same level of server state.
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001734 * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
1735 * pointer from cli.p1.
William Lallemanda6c5f332016-11-19 02:25:36 +01001736 */
Willy Tarreau83061a82018-07-13 11:56:34 +02001737static int dump_servers_state(struct stream_interface *si, struct buffer *buf)
William Lallemanda6c5f332016-11-19 02:25:36 +01001738{
1739 struct appctx *appctx = __objt_appctx(si->end);
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001740 struct proxy *px = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001741 struct server *srv;
1742 char srv_addr[INET6_ADDRSTRLEN + 1];
1743 time_t srv_time_since_last_change;
1744 int bk_f_forced_id, srv_f_forced_id;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001745 char *srvrecord;
William Lallemanda6c5f332016-11-19 02:25:36 +01001746
William Lallemanda6c5f332016-11-19 02:25:36 +01001747 /* we don't want to report any state if the backend is not enabled on this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001748 if (!(proc_mask(px->bind_proc) & pid_bit))
William Lallemanda6c5f332016-11-19 02:25:36 +01001749 return 1;
1750
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001751 if (!appctx->ctx.cli.p1)
1752 appctx->ctx.cli.p1 = px->srv;
William Lallemanda6c5f332016-11-19 02:25:36 +01001753
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001754 for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
1755 srv = appctx->ctx.cli.p1;
William Lallemanda6c5f332016-11-19 02:25:36 +01001756 srv_addr[0] = '\0';
1757
1758 switch (srv->addr.ss_family) {
1759 case AF_INET:
1760 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
1761 srv_addr, INET_ADDRSTRLEN + 1);
1762 break;
1763 case AF_INET6:
1764 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
1765 srv_addr, INET6_ADDRSTRLEN + 1);
1766 break;
Daniel Corbett9215ffa2018-05-19 19:43:24 -04001767 default:
1768 memcpy(srv_addr, "-\0", 2);
1769 break;
William Lallemanda6c5f332016-11-19 02:25:36 +01001770 }
1771 srv_time_since_last_change = now.tv_sec - srv->last_change;
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001772 bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001773 srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
1774
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001775 srvrecord = NULL;
1776 if (srv->srvrq && srv->srvrq->name)
1777 srvrecord = srv->srvrq->name;
1778
William Lallemanda6c5f332016-11-19 02:25:36 +01001779 chunk_appendf(buf,
1780 "%d %s "
1781 "%d %s %s "
1782 "%d %d %d %d %ld "
1783 "%d %d %d %d %d "
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001784 "%d %d %s %u %s"
William Lallemanda6c5f332016-11-19 02:25:36 +01001785 "\n",
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001786 px->uuid, px->id,
William Lallemanda6c5f332016-11-19 02:25:36 +01001787 srv->puid, srv->id, srv_addr,
Emeric Brun52a91d32017-08-31 14:41:55 +02001788 srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
William Lallemanda6c5f332016-11-19 02:25:36 +01001789 srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001790 bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
1791 srvrecord ? srvrecord : "-");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001792 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001793 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001794 return 0;
1795 }
1796 }
1797 return 1;
1798}
1799
1800/* Parses backend list or simply use backend name provided by the user to return
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001801 * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
1802 * non-null.
William Lallemanda6c5f332016-11-19 02:25:36 +01001803 */
1804static int cli_io_handler_servers_state(struct appctx *appctx)
1805{
1806 struct stream_interface *si = appctx->owner;
William Lallemanda6c5f332016-11-19 02:25:36 +01001807 struct proxy *curproxy;
1808
1809 chunk_reset(&trash);
1810
1811 if (appctx->st2 == STAT_ST_INIT) {
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001812 if (!appctx->ctx.cli.p0)
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001813 appctx->ctx.cli.p0 = proxies_list;
William Lallemanda6c5f332016-11-19 02:25:36 +01001814 appctx->st2 = STAT_ST_HEAD;
1815 }
1816
1817 if (appctx->st2 == STAT_ST_HEAD) {
1818 chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001819 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001820 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001821 return 0;
1822 }
1823 appctx->st2 = STAT_ST_INFO;
1824 }
1825
1826 /* STAT_ST_INFO */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001827 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1828 curproxy = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001829 /* servers are only in backends */
1830 if (curproxy->cap & PR_CAP_BE) {
1831 if (!dump_servers_state(si, &trash))
1832 return 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001833 }
1834 /* only the selected proxy is dumped */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001835 if (appctx->ctx.cli.i0)
William Lallemanda6c5f332016-11-19 02:25:36 +01001836 break;
1837 }
1838
1839 return 1;
1840}
1841
Willy Tarreau608ea592016-12-16 18:01:15 +01001842/* Parses backend list and simply report backend names. It keeps the proxy
1843 * pointer in cli.p0.
1844 */
William Lallemand933efcd2016-11-22 12:34:16 +01001845static int cli_io_handler_show_backend(struct appctx *appctx)
1846{
William Lallemand933efcd2016-11-22 12:34:16 +01001847 struct stream_interface *si = appctx->owner;
1848 struct proxy *curproxy;
1849
1850 chunk_reset(&trash);
1851
Willy Tarreau608ea592016-12-16 18:01:15 +01001852 if (!appctx->ctx.cli.p0) {
William Lallemand933efcd2016-11-22 12:34:16 +01001853 chunk_printf(&trash, "# name\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001854 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001855 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001856 return 0;
1857 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001858 appctx->ctx.cli.p0 = proxies_list;
William Lallemand933efcd2016-11-22 12:34:16 +01001859 }
1860
Willy Tarreau608ea592016-12-16 18:01:15 +01001861 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1862 curproxy = appctx->ctx.cli.p0;
William Lallemand933efcd2016-11-22 12:34:16 +01001863
1864 /* looking for backends only */
1865 if (!(curproxy->cap & PR_CAP_BE))
1866 continue;
1867
1868 /* we don't want to list a backend which is bound to this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001869 if (!(proc_mask(curproxy->bind_proc) & pid_bit))
William Lallemand933efcd2016-11-22 12:34:16 +01001870 continue;
1871
1872 chunk_appendf(&trash, "%s\n", curproxy->id);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001873 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001874 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001875 return 0;
1876 }
1877 }
1878
1879 return 1;
1880}
William Lallemanda6c5f332016-11-19 02:25:36 +01001881
Willy Tarreaua275a372018-08-21 14:50:44 +02001882/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
1883 *
1884 * Grabs the proxy lock and each server's lock.
1885 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001886static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001887{
1888 struct proxy *px;
1889 struct server *s;
1890
1891 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1892 return 1;
1893
1894 px = cli_find_backend(appctx, args[3]);
1895 if (!px)
1896 return 1;
1897
Willy Tarreaua275a372018-08-21 14:50:44 +02001898 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1899
Olivier Houchard614f8d72017-03-14 20:08:46 +01001900 px->ck_opts |= PR_CK_DYNAMIC;
1901
Willy Tarreaua275a372018-08-21 14:50:44 +02001902 for (s = px->srv; s != NULL; s = s->next) {
1903 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001904 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001905 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1906 }
1907
1908 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001909
1910 return 1;
1911}
1912
Willy Tarreaua275a372018-08-21 14:50:44 +02001913/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
1914 *
1915 * Grabs the proxy lock and each server's lock.
1916 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001917static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001918{
1919 struct proxy *px;
1920 struct server *s;
1921
1922 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1923 return 1;
1924
1925 px = cli_find_backend(appctx, args[3]);
1926 if (!px)
1927 return 1;
1928
Willy Tarreaua275a372018-08-21 14:50:44 +02001929 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1930
Olivier Houchard614f8d72017-03-14 20:08:46 +01001931 px->ck_opts &= ~PR_CK_DYNAMIC;
1932
1933 for (s = px->srv; s != NULL; s = s->next) {
Willy Tarreaua275a372018-08-21 14:50:44 +02001934 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001935 if (!(s->flags & SRV_F_COOKIESET)) {
1936 free(s->cookie);
1937 s->cookie = NULL;
1938 }
Willy Tarreaua275a372018-08-21 14:50:44 +02001939 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001940 }
1941
Willy Tarreaua275a372018-08-21 14:50:44 +02001942 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
1943
Olivier Houchard614f8d72017-03-14 20:08:46 +01001944 return 1;
1945}
1946
Willy Tarreaua275a372018-08-21 14:50:44 +02001947/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
1948 *
1949 * Grabs the proxy lock and each server's lock.
1950 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001951static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001952{
1953 struct proxy *px;
1954 struct server *s;
1955 char *newkey;
1956
1957 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1958 return 1;
1959
1960 px = cli_find_backend(appctx, args[3]);
1961 if (!px)
1962 return 1;
1963
1964 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001965 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001966 appctx->ctx.cli.msg = "String value expected.\n";
1967 appctx->st0 = CLI_ST_PRINT;
1968 return 1;
1969 }
1970
1971 newkey = strdup(args[4]);
1972 if (!newkey) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02001973 appctx->ctx.cli.severity = LOG_ERR;
Olivier Houchard614f8d72017-03-14 20:08:46 +01001974 appctx->ctx.cli.msg = "Failed to allocate memory.\n";
1975 appctx->st0 = CLI_ST_PRINT;
1976 return 1;
1977 }
Willy Tarreaua275a372018-08-21 14:50:44 +02001978
1979 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
1980
Olivier Houchard614f8d72017-03-14 20:08:46 +01001981 free(px->dyncookie_key);
1982 px->dyncookie_key = newkey;
1983
Willy Tarreaua275a372018-08-21 14:50:44 +02001984 for (s = px->srv; s != NULL; s = s->next) {
1985 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001986 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001987 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1988 }
1989
1990 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001991
1992 return 1;
1993}
1994
Willy Tarreaua275a372018-08-21 14:50:44 +02001995/* Parses the "set maxconn frontend" directive, it always returns 1.
1996 *
1997 * Grabs the proxy lock.
1998 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001999static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002000{
2001 struct proxy *px;
2002 struct listener *l;
2003 int v;
2004
2005 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2006 return 1;
2007
2008 px = cli_find_frontend(appctx, args[3]);
2009 if (!px)
2010 return 1;
2011
2012 if (!*args[4]) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002013 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002014 appctx->ctx.cli.msg = "Integer value expected.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002015 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002016 return 1;
2017 }
2018
2019 v = atoi(args[4]);
2020 if (v < 0) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002021 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002022 appctx->ctx.cli.msg = "Value out of range.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002023 appctx->st0 = CLI_ST_PRINT;
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002024 return 1;
2025 }
2026
2027 /* OK, the value is fine, so we assign it to the proxy and to all of
2028 * its listeners. The blocked ones will be dequeued.
2029 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002030 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2031
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002032 px->maxconn = v;
2033 list_for_each_entry(l, &px->conf.listeners, by_fe) {
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002034 if (l->state == LI_FULL)
2035 resume_listener(l);
2036 }
2037
2038 if (px->maxconn > px->feconn && !LIST_ISEMPTY(&px->listener_queue))
2039 dequeue_all_listeners(&px->listener_queue);
2040
Willy Tarreaua275a372018-08-21 14:50:44 +02002041 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2042
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002043 return 1;
2044}
2045
Willy Tarreaua275a372018-08-21 14:50:44 +02002046/* Parses the "shutdown frontend" directive, it always returns 1.
2047 *
2048 * Grabs the proxy lock.
2049 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002050static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002051{
2052 struct proxy *px;
2053
2054 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2055 return 1;
2056
2057 px = cli_find_frontend(appctx, args[2]);
2058 if (!px)
2059 return 1;
2060
2061 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002062 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002063 appctx->ctx.cli.msg = "Frontend was already shut down.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002064 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002065 return 1;
2066 }
2067
Christopher Faulet767a84b2017-11-24 16:50:31 +01002068 ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2069 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002070 send_log(px, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
2071 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreaua275a372018-08-21 14:50:44 +02002072
2073 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002074 stop_proxy(px);
Willy Tarreaua275a372018-08-21 14:50:44 +02002075 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2076
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002077 return 1;
2078}
2079
Willy Tarreaua275a372018-08-21 14:50:44 +02002080/* Parses the "disable frontend" directive, it always returns 1.
2081 *
2082 * Grabs the proxy lock.
2083 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002084static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002085{
2086 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002087 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002088
2089 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2090 return 1;
2091
2092 px = cli_find_frontend(appctx, args[2]);
2093 if (!px)
2094 return 1;
2095
2096 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002097 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002098 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot disable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002099 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002100 return 1;
2101 }
2102
2103 if (px->state == PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002104 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002105 appctx->ctx.cli.msg = "Frontend is already disabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002106 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002107 return 1;
2108 }
2109
Willy Tarreaua275a372018-08-21 14:50:44 +02002110 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2111 ret = pause_proxy(px);
2112 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2113
2114 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002115 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002116 appctx->ctx.cli.msg = "Failed to pause frontend, check logs for precise cause.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002117 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002118 return 1;
2119 }
2120 return 1;
2121}
2122
Willy Tarreaua275a372018-08-21 14:50:44 +02002123/* Parses the "enable frontend" directive, it always returns 1.
2124 *
2125 * Grabs the proxy lock.
2126 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002127static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002128{
2129 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002130 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002131
2132 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2133 return 1;
2134
2135 px = cli_find_frontend(appctx, args[2]);
2136 if (!px)
2137 return 1;
2138
2139 if (px->state == PR_STSTOPPED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002140 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002141 appctx->ctx.cli.msg = "Frontend was previously shut down, cannot enable.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002142 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002143 return 1;
2144 }
2145
2146 if (px->state != PR_STPAUSED) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002147 appctx->ctx.cli.severity = LOG_NOTICE;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002148 appctx->ctx.cli.msg = "Frontend is already enabled.\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002149 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002150 return 1;
2151 }
2152
Willy Tarreaua275a372018-08-21 14:50:44 +02002153 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2154 ret = resume_proxy(px);
2155 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2156
2157 if (!ret) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +02002158 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002159 appctx->ctx.cli.msg = "Failed to resume frontend, check logs for precise cause (port conflict?).\n";
Willy Tarreau3b6e5472016-11-24 15:53:53 +01002160 appctx->st0 = CLI_ST_PRINT;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002161 return 1;
2162 }
2163 return 1;
2164}
2165
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002166/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
2167 * now.
2168 */
2169static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
2170{
2171 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2172 return 1;
2173
2174 if (*args[2]) {
2175 struct proxy *px;
2176
2177 px = proxy_find_by_name(args[2], 0, 0);
2178 if (px)
2179 appctx->ctx.errors.iid = px->uuid;
2180 else
2181 appctx->ctx.errors.iid = atoi(args[2]);
2182
2183 if (!appctx->ctx.errors.iid) {
2184 appctx->ctx.cli.severity = LOG_ERR;
2185 appctx->ctx.cli.msg = "No such proxy.\n";
2186 appctx->st0 = CLI_ST_PRINT;
2187 return 1;
2188 }
2189 }
2190 else
2191 appctx->ctx.errors.iid = -1; // dump all proxies
2192
2193 appctx->ctx.errors.flag = 0;
2194 if (strcmp(args[3], "request") == 0)
2195 appctx->ctx.errors.flag |= 4; // ignore response
2196 else if (strcmp(args[3], "response") == 0)
2197 appctx->ctx.errors.flag |= 2; // ignore request
2198 appctx->ctx.errors.px = NULL;
2199 return 0;
2200}
2201
2202/* This function dumps all captured errors onto the stream interface's
2203 * read buffer. It returns 0 if the output buffer is full and it needs
2204 * to be called again, otherwise non-zero.
2205 */
2206static int cli_io_handler_show_errors(struct appctx *appctx)
2207{
2208 struct stream_interface *si = appctx->owner;
2209 extern const char *monthname[12];
2210
2211 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
2212 return 1;
2213
2214 chunk_reset(&trash);
2215
2216 if (!appctx->ctx.errors.px) {
2217 /* the function had not been called yet, let's prepare the
2218 * buffer for a response.
2219 */
2220 struct tm tm;
2221
2222 get_localtime(date.tv_sec, &tm);
2223 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
2224 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2225 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
2226 error_snapshot_id);
2227
Willy Tarreau36b27362018-09-07 19:55:44 +02002228 if (ci_putchk(si_ic(si), &trash) == -1)
2229 goto cant_send;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002230
2231 appctx->ctx.errors.px = proxies_list;
2232 appctx->ctx.errors.bol = 0;
2233 appctx->ctx.errors.ptr = -1;
2234 }
2235
2236 /* we have two inner loops here, one for the proxy, the other one for
2237 * the buffer.
2238 */
2239 while (appctx->ctx.errors.px) {
2240 struct error_snapshot *es;
2241
Willy Tarreau36b27362018-09-07 19:55:44 +02002242 HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2243
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002244 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002245 es = appctx->ctx.errors.px->invalid_req;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002246 if (appctx->ctx.errors.flag & 2) // skip req
2247 goto next;
2248 }
2249 else {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002250 es = appctx->ctx.errors.px->invalid_rep;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002251 if (appctx->ctx.errors.flag & 4) // skip resp
2252 goto next;
2253 }
2254
Willy Tarreauc55015e2018-09-07 19:02:32 +02002255 if (!es)
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002256 goto next;
2257
2258 if (appctx->ctx.errors.iid >= 0 &&
2259 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
2260 es->oe->uuid != appctx->ctx.errors.iid)
2261 goto next;
2262
2263 if (appctx->ctx.errors.ptr < 0) {
2264 /* just print headers now */
2265
2266 char pn[INET6_ADDRSTRLEN];
2267 struct tm tm;
2268 int port;
2269
2270 get_localtime(es->when.tv_sec, &tm);
2271 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
2272 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2273 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
2274
2275 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
2276 case AF_INET:
2277 case AF_INET6:
2278 port = get_host_port(&es->src);
2279 break;
2280 default:
2281 port = 0;
2282 }
2283
2284 switch (appctx->ctx.errors.flag & 1) {
2285 case 0:
2286 chunk_appendf(&trash,
2287 " frontend %s (#%d): invalid request\n"
2288 " backend %s (#%d)",
2289 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2290 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
2291 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
2292 break;
2293 case 1:
2294 chunk_appendf(&trash,
2295 " backend %s (#%d): invalid response\n"
2296 " frontend %s (#%d)",
2297 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
2298 es->oe->id, es->oe->uuid);
2299 break;
2300 }
2301
2302 chunk_appendf(&trash,
2303 ", server %s (#%d), event #%u, src %s:%d\n"
2304 " buffer starts at %llu (including %u out), %u free,\n"
2305 " len %u, wraps at %u, error at position %u\n",
2306 es->srv ? es->srv->id : "<NONE>",
2307 es->srv ? es->srv->puid : -1,
2308 es->ev_id, pn, port,
2309 es->buf_ofs, es->buf_out,
2310 global.tune.bufsize - es->buf_out - es->buf_len,
2311 es->buf_len, es->buf_wrap, es->buf_err);
2312
2313 if (es->show)
2314 es->show(&trash, es);
2315
2316 chunk_appendf(&trash, " \n");
2317
Willy Tarreau36b27362018-09-07 19:55:44 +02002318 if (ci_putchk(si_ic(si), &trash) == -1)
2319 goto cant_send_unlock;
2320
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002321 appctx->ctx.errors.ptr = 0;
2322 appctx->ctx.errors.ev_id = es->ev_id;
2323 }
2324
2325 if (appctx->ctx.errors.ev_id != es->ev_id) {
2326 /* the snapshot changed while we were dumping it */
2327 chunk_appendf(&trash,
2328 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau36b27362018-09-07 19:55:44 +02002329 if (ci_putchk(si_ic(si), &trash) == -1)
2330 goto cant_send_unlock;
2331
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002332 goto next;
2333 }
2334
2335 /* OK, ptr >= 0, so we have to dump the current line */
Willy Tarreau4bc7d902018-09-07 20:07:17 +02002336 while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002337 int newptr;
2338 int newline;
2339
2340 newline = appctx->ctx.errors.bol;
2341 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
2342 if (newptr == appctx->ctx.errors.ptr)
Willy Tarreau36b27362018-09-07 19:55:44 +02002343 goto cant_send_unlock;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002344
Willy Tarreau36b27362018-09-07 19:55:44 +02002345 if (ci_putchk(si_ic(si), &trash) == -1)
2346 goto cant_send_unlock;
2347
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002348 appctx->ctx.errors.ptr = newptr;
2349 appctx->ctx.errors.bol = newline;
2350 };
2351 next:
Willy Tarreau36b27362018-09-07 19:55:44 +02002352 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002353 appctx->ctx.errors.bol = 0;
2354 appctx->ctx.errors.ptr = -1;
2355 appctx->ctx.errors.flag ^= 1;
2356 if (!(appctx->ctx.errors.flag & 1))
2357 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
2358 }
2359
2360 /* dump complete */
2361 return 1;
Willy Tarreau36b27362018-09-07 19:55:44 +02002362
2363 cant_send_unlock:
2364 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2365 cant_send:
Willy Tarreaudb398432018-11-15 11:08:52 +01002366 si_rx_room_blk(si);
Willy Tarreau36b27362018-09-07 19:55:44 +02002367 return 0;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002368}
2369
William Lallemanda6c5f332016-11-19 02:25:36 +01002370/* register cli keywords */
2371static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau15b9e682016-11-24 11:55:28 +01002372 { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
2373 { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002374 { { "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 +01002375 { { "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 +01002376 { { "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 +01002377 { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
Olivier Houchard614f8d72017-03-14 20:08:46 +01002378 { { "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 },
2379 { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
2380 { { "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 +02002381 { { "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 +01002382 {{},}
2383}};
2384
Willy Tarreau0108d902018-11-25 19:14:37 +01002385INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002386
2387/*
2388 * Local variables:
2389 * c-indent-level: 8
2390 * c-basic-offset: 8
2391 * End:
2392 */