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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * Proxy variables and functions.
3 *
Willy Tarreau3a7d2072009-03-05 23:48:25 +01004 * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <fcntl.h>
14#include <unistd.h>
Willy Tarreauc8f24f82007-11-30 18:38:35 +010015#include <string.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020016#include <sys/types.h>
17#include <sys/socket.h>
18#include <sys/stat.h>
19
Willy Tarreaub2551052020-06-09 09:07:15 +020020#include <import/eb32tree.h>
21#include <import/ebistree.h>
22
Willy Tarreau4c7e4b72020-05-27 12:58:42 +020023#include <haproxy/api.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020024#include <haproxy/applet-t.h>
25#include <haproxy/capture-t.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020026#include <haproxy/cfgparse.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020027#include <haproxy/cli.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020028#include <haproxy/errors.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020029#include <haproxy/fd.h>
Willy Tarreauc7babd82020-06-04 21:29:29 +020030#include <haproxy/filters.h>
Willy Tarreauf268ee82020-06-04 17:05:57 +020031#include <haproxy/global.h>
Willy Tarreauc2b1ff02020-06-04 21:21:03 +020032#include <haproxy/http_ana.h>
Willy Tarreau213e9902020-06-04 14:58:24 +020033#include <haproxy/listener.h>
Willy Tarreauaeed4a82020-06-04 22:01:04 +020034#include <haproxy/log.h>
Willy Tarreau8efbdfb2020-06-04 11:29:21 +020035#include <haproxy/obj_type-t.h>
Willy Tarreau3c2a7c22020-06-04 18:38:21 +020036#include <haproxy/peers.h>
Willy Tarreaud0ef4392020-06-02 09:38:52 +020037#include <haproxy/pool.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020038#include <haproxy/proto_tcp.h>
Willy Tarreaua264d962020-06-04 22:29:18 +020039#include <haproxy/proxy.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +020040#include <haproxy/server-t.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020041#include <haproxy/signal.h>
Willy Tarreau2eec9b52020-06-04 19:58:55 +020042#include <haproxy/stats-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +020043#include <haproxy/stream.h>
Willy Tarreau5e539c92020-06-04 20:45:39 +020044#include <haproxy/stream_interface.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +020045#include <haproxy/task.h>
Willy Tarreau92b4f132020-06-01 11:05:15 +020046#include <haproxy/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020047
Willy Tarreaubaaee002006-06-26 02:48:02 +020048
Willy Tarreau918ff602011-07-25 16:33:49 +020049int listeners; /* # of proxy listeners, set by cfgparse */
Olivier Houchardfbc74e82017-11-24 16:54:05 +010050struct proxy *proxies_list = NULL; /* list of all existing proxies */
Willy Tarreau53fb4ae2009-10-04 23:04:08 +020051struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
Willy Tarreauf79d9502014-03-15 07:22:35 +010052struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */
Willy Tarreau10479e42010-12-12 14:00:34 +010053unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
Willy Tarreaubaaee002006-06-26 02:48:02 +020054
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010055/* proxy->options */
56const struct cfg_opt cfg_opts[] =
57{
58 { "abortonclose", PR_O_ABRT_CLOSE, PR_CAP_BE, 0, 0 },
59 { "allbackups", PR_O_USE_ALL_BK, PR_CAP_BE, 0, 0 },
60 { "checkcache", PR_O_CHK_CACHE, PR_CAP_BE, 0, PR_MODE_HTTP },
61 { "clitcpka", PR_O_TCP_CLI_KA, PR_CAP_FE, 0, 0 },
62 { "contstats", PR_O_CONTSTATS, PR_CAP_FE, 0, 0 },
63 { "dontlognull", PR_O_NULLNOLOG, PR_CAP_FE, 0, 0 },
64 { "http_proxy", PR_O_HTTP_PROXY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
65 { "http-buffer-request", PR_O_WREQ_BODY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
66 { "http-ignore-probes", PR_O_IGNORE_PRB, PR_CAP_FE, 0, PR_MODE_HTTP },
67 { "prefer-last-server", PR_O_PREF_LAST, PR_CAP_BE, 0, PR_MODE_HTTP },
68 { "logasap", PR_O_LOGASAP, PR_CAP_FE, 0, 0 },
69 { "nolinger", PR_O_TCP_NOLING, PR_CAP_FE | PR_CAP_BE, 0, 0 },
70 { "persist", PR_O_PERSIST, PR_CAP_BE, 0, 0 },
71 { "srvtcpka", PR_O_TCP_SRV_KA, PR_CAP_BE, 0, 0 },
Willy Tarreaue5733232019-05-22 19:24:06 +020072#ifdef USE_TPROXY
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010073 { "transparent", PR_O_TRANSP, PR_CAP_BE, 0, 0 },
74#else
75 { "transparent", 0, 0, 0, 0 },
76#endif
77
78 { NULL, 0, 0, 0, 0 }
79};
80
81/* proxy->options2 */
82const struct cfg_opt cfg_opts2[] =
83{
Willy Tarreaue5733232019-05-22 19:24:06 +020084#ifdef USE_LINUX_SPLICE
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010085 { "splice-request", PR_O2_SPLIC_REQ, PR_CAP_FE|PR_CAP_BE, 0, 0 },
86 { "splice-response", PR_O2_SPLIC_RTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
87 { "splice-auto", PR_O2_SPLIC_AUT, PR_CAP_FE|PR_CAP_BE, 0, 0 },
88#else
89 { "splice-request", 0, 0, 0, 0 },
90 { "splice-response", 0, 0, 0, 0 },
91 { "splice-auto", 0, 0, 0, 0 },
92#endif
93 { "accept-invalid-http-request", PR_O2_REQBUG_OK, PR_CAP_FE, 0, PR_MODE_HTTP },
94 { "accept-invalid-http-response", PR_O2_RSPBUG_OK, PR_CAP_BE, 0, PR_MODE_HTTP },
95 { "dontlog-normal", PR_O2_NOLOGNORM, PR_CAP_FE, 0, 0 },
96 { "log-separate-errors", PR_O2_LOGERRORS, PR_CAP_FE, 0, 0 },
97 { "log-health-checks", PR_O2_LOGHCHKS, PR_CAP_BE, 0, 0 },
98 { "socket-stats", PR_O2_SOCKSTAT, PR_CAP_FE, 0, 0 },
99 { "tcp-smart-accept", PR_O2_SMARTACC, PR_CAP_FE, 0, 0 },
100 { "tcp-smart-connect", PR_O2_SMARTCON, PR_CAP_BE, 0, 0 },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100101 { "independent-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
102 { "http-use-proxy-header", PR_O2_USE_PXHDR, PR_CAP_FE, 0, PR_MODE_HTTP },
103 { "http-pretend-keepalive", PR_O2_FAKE_KA, PR_CAP_BE, 0, PR_MODE_HTTP },
104 { "http-no-delay", PR_O2_NODELAY, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Faulet31930372019-07-15 10:16:58 +0200105 { "http-use-htx", 0, PR_CAP_FE|PR_CAP_BE, 0, 0 }, // deprecated
Christopher Faulet98fbe952019-07-22 16:18:24 +0200106
107 {"h1-case-adjust-bogus-client", PR_O2_H1_ADJ_BUGCLI, PR_CAP_FE, 0, PR_MODE_HTTP },
108 {"h1-case-adjust-bogus-server", PR_O2_H1_ADJ_BUGSRV, PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Faulet89aed322020-06-02 17:33:56 +0200109 {"disable-h2-upgrade", PR_O2_NO_H2_UPGRADE, PR_CAP_FE, 0, PR_MODE_HTTP },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100110 { NULL, 0, 0, 0 }
111};
112
Willy Tarreau977b8e42006-12-29 14:19:17 +0100113/*
Willy Tarreau816eb542007-11-04 07:04:43 +0100114 * This function returns a string containing a name describing capabilities to
115 * report comprehensible error messages. Specifically, it will return the words
Christopher Faulet898566e2016-10-26 11:06:28 +0200116 * "frontend", "backend" when appropriate, or "proxy" for all other
Willy Tarreau816eb542007-11-04 07:04:43 +0100117 * cases including the proxies declared in "listen" mode.
Willy Tarreau977b8e42006-12-29 14:19:17 +0100118 */
Willy Tarreau816eb542007-11-04 07:04:43 +0100119const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +0100120{
Willy Tarreau816eb542007-11-04 07:04:43 +0100121 if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
122 if (cap & PR_CAP_FE)
123 return "frontend";
124 else if (cap & PR_CAP_BE)
125 return "backend";
Willy Tarreau816eb542007-11-04 07:04:43 +0100126 }
127 return "proxy";
Willy Tarreau977b8e42006-12-29 14:19:17 +0100128}
129
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100130/*
131 * This function returns a string containing the mode of the proxy in a format
132 * suitable for error messages.
133 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100134const char *proxy_mode_str(int mode) {
135
136 if (mode == PR_MODE_TCP)
137 return "tcp";
138 else if (mode == PR_MODE_HTTP)
139 return "http";
140 else if (mode == PR_MODE_HEALTH)
141 return "health";
William Lallemandcf62f7e2018-10-26 14:47:40 +0200142 else if (mode == PR_MODE_CLI)
143 return "cli";
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100144 else
145 return "unknown";
146}
147
Willy Tarreauf3950172009-10-10 18:35:51 +0200148/*
149 * This function scans the list of backends and servers to retrieve the first
150 * backend and the first server with the given names, and sets them in both
151 * parameters. It returns zero if either is not found, or non-zero and sets
152 * the ones it did not found to NULL. If a NULL pointer is passed for the
153 * backend, only the pointer to the server will be updated.
154 */
155int get_backend_server(const char *bk_name, const char *sv_name,
156 struct proxy **bk, struct server **sv)
157{
158 struct proxy *p;
159 struct server *s;
Willy Tarreau7ecc4202014-03-15 07:57:11 +0100160 int sid;
Willy Tarreauf3950172009-10-10 18:35:51 +0200161
162 *sv = NULL;
163
Willy Tarreau050536d2012-10-04 08:47:34 +0200164 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200165 if (*sv_name == '#')
166 sid = atoi(sv_name + 1);
167
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200168 p = proxy_be_by_name(bk_name);
Willy Tarreauf3950172009-10-10 18:35:51 +0200169 if (bk)
170 *bk = p;
171 if (!p)
172 return 0;
173
174 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100175 if ((sid >= 0 && s->puid == sid) ||
176 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200177 break;
178 *sv = s;
179 if (!s)
180 return 0;
181 return 1;
182}
183
Willy Tarreaue219db72007-12-03 01:30:13 +0100184/* This function parses a "timeout" statement in a proxy section. It returns
185 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200186 * return zero, it will write an error or warning message into a preallocated
187 * buffer returned at <err>. The trailing is not be written. The function must
188 * be called with <args> pointing to the first command line word, with <proxy>
189 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
190 * As a special case for compatibility with older configs, it also accepts
191 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100192 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200193static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200194 struct proxy *defpx, const char *file, int line,
195 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100196{
197 unsigned timeout;
198 int retval, cap;
199 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200200 int *tv = NULL;
201 int *td = NULL;
Willy Tarreaue219db72007-12-03 01:30:13 +0100202
203 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200204
205 /* simply skip "timeout" but remain compatible with old form */
206 if (strcmp(args[0], "timeout") == 0)
207 args++;
208
Willy Tarreaue219db72007-12-03 01:30:13 +0100209 name = args[0];
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200210 if (!strcmp(args[0], "client")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100211 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100212 tv = &proxy->timeout.client;
213 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100214 cap = PR_CAP_FE;
215 } else if (!strcmp(args[0], "tarpit")) {
216 tv = &proxy->timeout.tarpit;
217 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100218 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100219 } else if (!strcmp(args[0], "http-keep-alive")) {
220 tv = &proxy->timeout.httpka;
221 td = &defpx->timeout.httpka;
222 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100223 } else if (!strcmp(args[0], "http-request")) {
224 tv = &proxy->timeout.httpreq;
225 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200226 cap = PR_CAP_FE | PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200227 } else if (!strcmp(args[0], "server")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100228 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100229 tv = &proxy->timeout.server;
230 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100231 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200232 } else if (!strcmp(args[0], "connect")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100233 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100234 tv = &proxy->timeout.connect;
235 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100236 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100237 } else if (!strcmp(args[0], "check")) {
238 tv = &proxy->timeout.check;
239 td = &defpx->timeout.check;
240 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100241 } else if (!strcmp(args[0], "queue")) {
242 tv = &proxy->timeout.queue;
243 td = &defpx->timeout.queue;
244 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200245 } else if (!strcmp(args[0], "tunnel")) {
246 tv = &proxy->timeout.tunnel;
247 td = &defpx->timeout.tunnel;
248 cap = PR_CAP_BE;
Willy Tarreau05cdd962014-05-10 14:30:07 +0200249 } else if (!strcmp(args[0], "client-fin")) {
250 tv = &proxy->timeout.clientfin;
251 td = &defpx->timeout.clientfin;
252 cap = PR_CAP_FE;
253 } else if (!strcmp(args[0], "server-fin")) {
254 tv = &proxy->timeout.serverfin;
255 td = &defpx->timeout.serverfin;
256 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200257 } else if (!strcmp(args[0], "clitimeout")) {
258 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout client'.", args[0]);
259 return -1;
260 } else if (!strcmp(args[0], "srvtimeout")) {
261 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout server'.", args[0]);
262 return -1;
263 } else if (!strcmp(args[0], "contimeout")) {
264 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout connect'.", args[0]);
265 return -1;
Willy Tarreaue219db72007-12-03 01:30:13 +0100266 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200267 memprintf(err,
268 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreau05cdd962014-05-10 14:30:07 +0200269 "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', "
270 "'client-fin' and 'server-fin' (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200271 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100272 return -1;
273 }
274
275 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200276 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100277 return -1;
278 }
279
280 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +0200281 if (res == PARSE_TIME_OVER) {
282 memprintf(err, "timer overflow in argument '%s' to 'timeout %s' (maximum value is 2147483647 ms or ~24.8 days)",
283 args[1], name);
284 return -1;
285 }
286 else if (res == PARSE_TIME_UNDER) {
287 memprintf(err, "timer underflow in argument '%s' to 'timeout %s' (minimum non-null value is 1 ms)",
288 args[1], name);
289 return -1;
290 }
291 else if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200292 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100293 return -1;
294 }
295
296 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200297 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
298 name, proxy_type_str(proxy), proxy->id,
299 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100300 retval = 1;
301 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200302 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200303 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100304 retval = 1;
305 }
306
Willy Tarreaufac5b592014-05-22 08:24:46 +0200307 if (*args[2] != 0) {
308 memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]);
309 retval = -1;
310 }
311
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200312 *tv = MS_TO_TICKS(timeout);
Willy Tarreaue219db72007-12-03 01:30:13 +0100313 return retval;
314}
315
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100316/* This function parses a "rate-limit" statement in a proxy section. It returns
317 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200318 * return zero, it will write an error or warning message into a preallocated
319 * buffer returned at <err>. The function must be called with <args> pointing
320 * to the first command line word, with <proxy> pointing to the proxy being
321 * parsed, and <defpx> to the default proxy or NULL.
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100322 */
323static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200324 struct proxy *defpx, const char *file, int line,
325 char **err)
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100326{
William Dauchybb9da0b2020-01-16 01:34:27 +0100327 int retval;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200328 char *res;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100329 unsigned int *tv = NULL;
330 unsigned int *td = NULL;
331 unsigned int val;
332
333 retval = 0;
334
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200335 if (strcmp(args[1], "sessions") == 0) {
Willy Tarreau13a34bd2009-05-10 18:52:49 +0200336 tv = &proxy->fe_sps_lim;
337 td = &defpx->fe_sps_lim;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200338 }
339 else {
340 memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100341 return -1;
342 }
343
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200344 if (*args[2] == 0) {
345 memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100346 return -1;
347 }
348
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200349 val = strtoul(args[2], &res, 0);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100350 if (*res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200351 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 +0100352 return -1;
353 }
354
William Dauchybb9da0b2020-01-16 01:34:27 +0100355 if (!(proxy->cap & PR_CAP_FE)) {
356 memprintf(err, "%s %s will be ignored because %s '%s' has no frontend capability",
357 args[0], args[1], proxy_type_str(proxy), proxy->id);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100358 retval = 1;
359 }
360 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200361 memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100362 retval = 1;
363 }
364
365 *tv = val;
366 return retval;
367}
368
Willy Tarreauc35362a2014-04-25 13:58:37 +0200369/* This function parses a "max-keep-alive-queue" statement in a proxy section.
370 * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it
371 * does not return zero, it will write an error or warning message into a
372 * preallocated buffer returned at <err>. The function must be called with
373 * <args> pointing to the first command line word, with <proxy> pointing to
374 * the proxy being parsed, and <defpx> to the default proxy or NULL.
375 */
376static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy,
377 struct proxy *defpx, const char *file, int line,
378 char **err)
379{
380 int retval;
381 char *res;
382 unsigned int val;
383
384 retval = 0;
385
386 if (*args[1] == 0) {
387 memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]);
388 return -1;
389 }
390
391 val = strtol(args[1], &res, 0);
392 if (*res) {
393 memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
394 return -1;
395 }
396
397 if (!(proxy->cap & PR_CAP_BE)) {
398 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
399 args[0], proxy_type_str(proxy), proxy->id);
400 retval = 1;
401 }
402
403 /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */
404 proxy->max_ka_queue = val + 1;
405 return retval;
406}
407
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200408/* This function parses a "declare" statement in a proxy section. It returns -1
409 * if there is any error, 1 for warning, otherwise 0. If it does not return zero,
410 * it will write an error or warning message into a preallocated buffer returned
411 * at <err>. The function must be called with <args> pointing to the first command
412 * line word, with <proxy> pointing to the proxy being parsed, and <defpx> to the
413 * default proxy or NULL.
414 */
415static int proxy_parse_declare(char **args, int section, struct proxy *curpx,
416 struct proxy *defpx, const char *file, int line,
417 char **err)
418{
419 /* Capture keyword wannot be declared in a default proxy. */
420 if (curpx == defpx) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800421 memprintf(err, "'%s' not available in default section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200422 return -1;
423 }
424
Joseph Herlant59dd2952018-11-15 11:46:55 -0800425 /* Capture keywork is only available in frontend. */
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200426 if (!(curpx->cap & PR_CAP_FE)) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800427 memprintf(err, "'%s' only available in frontend or listen section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200428 return -1;
429 }
430
431 /* Check mandatory second keyword. */
432 if (!args[1] || !*args[1]) {
433 memprintf(err, "'%s' needs a second keyword that specify the type of declaration ('capture')", args[0]);
434 return -1;
435 }
436
Joseph Herlant59dd2952018-11-15 11:46:55 -0800437 /* Actually, declare is only available for declaring capture
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200438 * slot, but in the future it can declare maps or variables.
Joseph Herlant59dd2952018-11-15 11:46:55 -0800439 * So, this section permits to check and switch according with
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200440 * the second keyword.
441 */
442 if (strcmp(args[1], "capture") == 0) {
443 char *error = NULL;
444 long len;
445 struct cap_hdr *hdr;
446
447 /* Check the next keyword. */
448 if (!args[2] || !*args[2] ||
449 (strcmp(args[2], "response") != 0 &&
450 strcmp(args[2], "request") != 0)) {
451 memprintf(err, "'%s %s' requires a direction ('request' or 'response')", args[0], args[1]);
452 return -1;
453 }
454
455 /* Check the 'len' keyword. */
456 if (!args[3] || !*args[3] || strcmp(args[3], "len") != 0) {
457 memprintf(err, "'%s %s' requires a capture length ('len')", args[0], args[1]);
458 return -1;
459 }
460
461 /* Check the length value. */
462 if (!args[4] || !*args[4]) {
463 memprintf(err, "'%s %s': 'len' requires a numeric value that represents the "
464 "capture length",
465 args[0], args[1]);
466 return -1;
467 }
468
469 /* convert the length value. */
470 len = strtol(args[4], &error, 10);
471 if (*error != '\0') {
472 memprintf(err, "'%s %s': cannot parse the length '%s'.",
473 args[0], args[1], args[3]);
474 return -1;
475 }
476
477 /* check length. */
478 if (len <= 0) {
479 memprintf(err, "length must be > 0");
480 return -1;
481 }
482
483 /* register the capture. */
Vincent Bernat02779b62016-04-03 13:48:43 +0200484 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200485 hdr->name = NULL; /* not a header capture */
486 hdr->namelen = 0;
487 hdr->len = len;
488 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
489
490 if (strcmp(args[2], "request") == 0) {
491 hdr->next = curpx->req_cap;
492 hdr->index = curpx->nb_req_cap++;
493 curpx->req_cap = hdr;
494 }
495 if (strcmp(args[2], "response") == 0) {
496 hdr->next = curpx->rsp_cap;
497 hdr->index = curpx->nb_rsp_cap++;
498 curpx->rsp_cap = hdr;
499 }
500 return 0;
501 }
502 else {
503 memprintf(err, "unknown declaration type '%s' (supports 'capture')", args[1]);
504 return -1;
505 }
506}
507
Olivier Houcharda254a372019-04-05 15:30:12 +0200508/* This function parses a "retry-on" statement */
509static int
510proxy_parse_retry_on(char **args, int section, struct proxy *curpx,
511 struct proxy *defpx, const char *file, int line,
512 char **err)
513{
514 int i;
515
516 if (!(*args[1])) {
517 memprintf(err, "'%s' needs at least one keyword to specify when to retry", args[0]);
518 return -1;
519 }
520 if (!(curpx->cap & PR_CAP_BE)) {
521 memprintf(err, "'%s' only available in backend or listen section", args[0]);
522 return -1;
523 }
524 curpx->retry_type = 0;
525 for (i = 1; *(args[i]); i++) {
526 if (!strcmp(args[i], "conn-failure"))
527 curpx->retry_type |= PR_RE_CONN_FAILED;
528 else if (!strcmp(args[i], "empty-response"))
529 curpx->retry_type |= PR_RE_DISCONNECTED;
530 else if (!strcmp(args[i], "response-timeout"))
531 curpx->retry_type |= PR_RE_TIMEOUT;
532 else if (!strcmp(args[i], "404"))
533 curpx->retry_type |= PR_RE_404;
534 else if (!strcmp(args[i], "408"))
535 curpx->retry_type |= PR_RE_408;
536 else if (!strcmp(args[i], "425"))
537 curpx->retry_type |= PR_RE_425;
538 else if (!strcmp(args[i], "500"))
539 curpx->retry_type |= PR_RE_500;
540 else if (!strcmp(args[i], "501"))
541 curpx->retry_type |= PR_RE_501;
542 else if (!strcmp(args[i], "502"))
543 curpx->retry_type |= PR_RE_502;
544 else if (!strcmp(args[i], "503"))
545 curpx->retry_type |= PR_RE_503;
546 else if (!strcmp(args[i], "504"))
547 curpx->retry_type |= PR_RE_504;
Olivier Houchard865d8392019-05-03 22:46:27 +0200548 else if (!strcmp(args[i], "0rtt-rejected"))
549 curpx->retry_type |= PR_RE_EARLY_ERROR;
Olivier Houcharde3249a92019-05-03 23:01:47 +0200550 else if (!strcmp(args[i], "junk-response"))
551 curpx->retry_type |= PR_RE_JUNK_REQUEST;
Olivier Houchardddf0e032019-05-10 18:05:40 +0200552 else if (!(strcmp(args[i], "all-retryable-errors")))
553 curpx->retry_type |= PR_RE_CONN_FAILED | PR_RE_DISCONNECTED |
554 PR_RE_TIMEOUT | PR_RE_500 | PR_RE_502 |
555 PR_RE_503 | PR_RE_504 | PR_RE_EARLY_ERROR |
556 PR_RE_JUNK_REQUEST;
Olivier Houcharda254a372019-04-05 15:30:12 +0200557 else if (!strcmp(args[i], "none")) {
558 if (i != 1 || *args[i + 1]) {
559 memprintf(err, "'%s' 'none' keyworld only usable alone", args[0]);
560 return -1;
561 }
562 } else {
563 memprintf(err, "'%s': unknown keyword '%s'", args[0], args[i]);
564 return -1;
565 }
566
567 }
568
569
570 return 0;
571}
572
Willy Tarreau52543212020-07-09 05:58:51 +0200573#ifdef TCP_KEEPCNT
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900574/* This function parses "{cli|srv}tcpka-cnt" statements */
575static int proxy_parse_tcpka_cnt(char **args, int section, struct proxy *proxy,
576 struct proxy *defpx, const char *file, int line,
577 char **err)
578{
579 int retval;
580 char *res;
581 unsigned int tcpka_cnt;
582
583 retval = 0;
584
585 if (*args[1] == 0) {
586 memprintf(err, "'%s' expects an integer value", args[0]);
587 return -1;
588 }
589
590 tcpka_cnt = strtol(args[1], &res, 0);
591 if (*res) {
592 memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
593 return -1;
594 }
595
596 if (!strcmp(args[0], "clitcpka-cnt")) {
597 if (!(proxy->cap & PR_CAP_FE)) {
598 memprintf(err, "%s will be ignored because %s '%s' has no frontend capability",
599 args[0], proxy_type_str(proxy), proxy->id);
600 retval = 1;
601 }
602 proxy->clitcpka_cnt = tcpka_cnt;
603 } else if (!strcmp(args[0], "srvtcpka-cnt")) {
604 if (!(proxy->cap & PR_CAP_BE)) {
605 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
606 args[0], proxy_type_str(proxy), proxy->id);
607 retval = 1;
608 }
609 proxy->srvtcpka_cnt = tcpka_cnt;
610 } else {
611 /* unreachable */
612 memprintf(err, "'%s': unknown keyword", args[0]);
613 return -1;
614 }
615
616 return retval;
617}
Willy Tarreau52543212020-07-09 05:58:51 +0200618#endif
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900619
Willy Tarreau52543212020-07-09 05:58:51 +0200620#ifdef TCP_KEEPIDLE
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900621/* This function parses "{cli|srv}tcpka-idle" statements */
622static int proxy_parse_tcpka_idle(char **args, int section, struct proxy *proxy,
623 struct proxy *defpx, const char *file, int line,
624 char **err)
625{
626 int retval;
627 const char *res;
628 unsigned int tcpka_idle;
629
630 retval = 0;
631
632 if (*args[1] == 0) {
633 memprintf(err, "'%s' expects an integer value", args[0]);
634 return -1;
635 }
636 res = parse_time_err(args[1], &tcpka_idle, TIME_UNIT_S);
637 if (res == PARSE_TIME_OVER) {
638 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
639 args[1], args[0]);
640 return -1;
641 }
642 else if (res == PARSE_TIME_UNDER) {
643 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
644 args[1], args[0]);
645 return -1;
646 }
647 else if (res) {
648 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
649 return -1;
650 }
651
652 if (!strcmp(args[0], "clitcpka-idle")) {
653 if (!(proxy->cap & PR_CAP_FE)) {
654 memprintf(err, "%s will be ignored because %s '%s' has no frontend capability",
655 args[0], proxy_type_str(proxy), proxy->id);
656 retval = 1;
657 }
658 proxy->clitcpka_idle = tcpka_idle;
659 } else if (!strcmp(args[0], "srvtcpka-idle")) {
660 if (!(proxy->cap & PR_CAP_BE)) {
661 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
662 args[0], proxy_type_str(proxy), proxy->id);
663 retval = 1;
664 }
665 proxy->srvtcpka_idle = tcpka_idle;
666 } else {
667 /* unreachable */
668 memprintf(err, "'%s': unknown keyword", args[0]);
669 return -1;
670 }
671
672 return retval;
673}
Willy Tarreau52543212020-07-09 05:58:51 +0200674#endif
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900675
Willy Tarreau52543212020-07-09 05:58:51 +0200676#ifdef TCP_KEEPINTVL
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900677/* This function parses "{cli|srv}tcpka-intvl" statements */
678static int proxy_parse_tcpka_intvl(char **args, int section, struct proxy *proxy,
679 struct proxy *defpx, const char *file, int line,
680 char **err)
681{
682 int retval;
683 const char *res;
684 unsigned int tcpka_intvl;
685
686 retval = 0;
687
688 if (*args[1] == 0) {
689 memprintf(err, "'%s' expects an integer value", args[0]);
690 return -1;
691 }
692 res = parse_time_err(args[1], &tcpka_intvl, TIME_UNIT_S);
693 if (res == PARSE_TIME_OVER) {
694 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
695 args[1], args[0]);
696 return -1;
697 }
698 else if (res == PARSE_TIME_UNDER) {
699 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
700 args[1], args[0]);
701 return -1;
702 }
703 else if (res) {
704 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
705 return -1;
706 }
707
708 if (!strcmp(args[0], "clitcpka-intvl")) {
709 if (!(proxy->cap & PR_CAP_FE)) {
710 memprintf(err, "%s will be ignored because %s '%s' has no frontend capability",
711 args[0], proxy_type_str(proxy), proxy->id);
712 retval = 1;
713 }
714 proxy->clitcpka_intvl = tcpka_intvl;
715 } else if (!strcmp(args[0], "srvtcpka-intvl")) {
716 if (!(proxy->cap & PR_CAP_BE)) {
717 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
718 args[0], proxy_type_str(proxy), proxy->id);
719 retval = 1;
720 }
721 proxy->srvtcpka_intvl = tcpka_intvl;
722 } else {
723 /* unreachable */
724 memprintf(err, "'%s': unknown keyword", args[0]);
725 return -1;
726 }
727
728 return retval;
729}
Willy Tarreau52543212020-07-09 05:58:51 +0200730#endif
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900731
Willy Tarreauf79d9502014-03-15 07:22:35 +0100732/* This function inserts proxy <px> into the tree of known proxies. The proxy's
733 * name is used as the storing key so it must already have been initialized.
734 */
735void proxy_store_name(struct proxy *px)
736{
737 px->conf.by_name.key = px->id;
738 ebis_insert(&proxy_by_name, &px->conf.by_name);
739}
740
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200741/* Returns a pointer to the first proxy matching capabilities <cap> and id
742 * <id>. NULL is returned if no match is found. If <table> is non-zero, it
743 * only considers proxies having a table.
Willy Tarreaubc216c42011-08-02 11:25:54 +0200744 */
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200745struct proxy *proxy_find_by_id(int id, int cap, int table)
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200746{
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200747 struct eb32_node *n;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200748
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200749 for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) {
750 struct proxy *px = container_of(n, struct proxy, conf.id);
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100751
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200752 if (px->uuid != id)
753 break;
Alex Williams96532db2009-11-01 21:27:13 -0500754
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200755 if ((px->cap & cap) != cap)
756 continue;
Alex Williams96532db2009-11-01 21:27:13 -0500757
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100758 if (table && (!px->table || !px->table->size))
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200759 continue;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100760
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200761 return px;
762 }
763 return NULL;
764}
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100765
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200766/* Returns a pointer to the first proxy matching either name <name>, or id
767 * <name> if <name> begins with a '#'. NULL is returned if no match is found.
768 * If <table> is non-zero, it only considers proxies having a table.
769 */
770struct proxy *proxy_find_by_name(const char *name, int cap, int table)
771{
772 struct proxy *curproxy;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200773
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200774 if (*name == '#') {
775 curproxy = proxy_find_by_id(atoi(name + 1), cap, table);
776 if (curproxy)
Willy Tarreauc739aa82015-05-26 11:35:41 +0200777 return curproxy;
Alex Williams96532db2009-11-01 21:27:13 -0500778 }
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100779 else {
780 struct ebpt_node *node;
781
782 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
783 curproxy = container_of(node, struct proxy, conf.by_name);
Alex Williams96532db2009-11-01 21:27:13 -0500784
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100785 if (strcmp(curproxy->id, name) != 0)
786 break;
787
788 if ((curproxy->cap & cap) != cap)
789 continue;
790
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100791 if (table && (!curproxy->table || !curproxy->table->size))
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200792 continue;
793
Willy Tarreauc739aa82015-05-26 11:35:41 +0200794 return curproxy;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100795 }
796 }
Willy Tarreauc739aa82015-05-26 11:35:41 +0200797 return NULL;
Alex Williams96532db2009-11-01 21:27:13 -0500798}
799
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200800/* Finds the best match for a proxy with capabilities <cap>, name <name> and id
801 * <id>. At most one of <id> or <name> may be different provided that <cap> is
802 * valid. Either <id> or <name> may be left unspecified (0). The purpose is to
803 * find a proxy based on some information from a previous configuration, across
804 * reloads or during information exchange between peers.
805 *
806 * Names are looked up first if present, then IDs are compared if present. In
807 * case of an inexact match whatever is forced in the configuration has
808 * precedence in the following order :
809 * - 1) forced ID (proves a renaming / change of proxy type)
810 * - 2) proxy name+type (may indicate a move if ID differs)
811 * - 3) automatic ID+type (may indicate a renaming)
812 *
813 * Depending on what is found, we can end up in the following situations :
814 *
815 * name id cap | possible causes
816 * -------------+-----------------
817 * -- -- -- | nothing found
818 * -- -- ok | nothing found
819 * -- ok -- | proxy deleted, ID points to next one
820 * -- ok ok | proxy renamed, or deleted with ID pointing to next one
821 * ok -- -- | proxy deleted, but other half with same name still here (before)
822 * ok -- ok | proxy's ID changed (proxy moved in the config file)
823 * ok ok -- | proxy deleted, but other half with same name still here (after)
824 * ok ok ok | perfect match
825 *
826 * Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits :
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200827 * - PR_FBM_MISMATCH_ID : proxy was found but ID differs
828 * (and ID was not zero)
829 * - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs
830 * (and name was not NULL)
831 * - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with
832 * the same name and/or id
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200833 *
834 * Only a valid proxy is returned. If capabilities do not match, NULL is
835 * returned. The caller can check <diff> to report detailed warnings / errors,
836 * and decide whether or not to use what was found.
837 */
838struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff)
839{
840 struct proxy *byname;
841 struct proxy *byid;
842
843 if (!name && !id)
844 return NULL;
845
846 if (diff)
847 *diff = 0;
848
849 byname = byid = NULL;
850
851 if (name) {
852 byname = proxy_find_by_name(name, cap, 0);
853 if (byname && (!id || byname->uuid == id))
854 return byname;
855 }
856
Joseph Herlant59dd2952018-11-15 11:46:55 -0800857 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200858 * - name not set
859 * - name set but not found
860 * - name found, but ID doesn't match.
861 */
862 if (id) {
863 byid = proxy_find_by_id(id, cap, 0);
864 if (byid) {
865 if (byname) {
866 /* id+type found, name+type found, but not all 3.
867 * ID wins only if forced, otherwise name wins.
868 */
869 if (byid->options & PR_O_FORCED_ID) {
870 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200871 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200872 return byid;
873 }
874 else {
875 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200876 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200877 return byname;
878 }
879 }
880
Joseph Herlant59dd2952018-11-15 11:46:55 -0800881 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200882 * - name not set
883 * - name set but not found
884 */
885 if (name && diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200886 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200887 return byid;
888 }
889
890 /* ID not found */
891 if (byname) {
892 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200893 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200894 return byname;
895 }
896 }
897
Joseph Herlant59dd2952018-11-15 11:46:55 -0800898 /* All remaining possibilities will lead to NULL. If we can report more
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200899 * detailed information to the caller about changed types and/or name,
900 * we'll do it. For example, we could detect that "listen foo" was
901 * split into "frontend foo_ft" and "backend foo_bk" if IDs are forced.
902 * - name not set, ID not found
903 * - name not found, ID not set
904 * - name not found, ID not found
905 */
906 if (!diff)
907 return NULL;
908
909 if (name) {
910 byname = proxy_find_by_name(name, 0, 0);
911 if (byname && (!id || byname->uuid == id))
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200912 *diff |= PR_FBM_MISMATCH_PROXYTYPE;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200913 }
914
915 if (id) {
916 byid = proxy_find_by_id(id, 0, 0);
917 if (byid) {
918 if (!name)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200919 *diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200920 else if (byid->options & PR_O_FORCED_ID)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200921 *diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200922 /* otherwise it's a different proxy that was returned */
923 }
924 }
925 return NULL;
926}
927
Willy Tarreaubaaee002006-06-26 02:48:02 +0200928/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100929 * This function finds a server with matching name within selected proxy.
930 * It also checks if there are more matching servers with
931 * requested name as this often leads into unexpected situations.
932 */
933
934struct server *findserver(const struct proxy *px, const char *name) {
935
936 struct server *cursrv, *target = NULL;
937
938 if (!px)
939 return NULL;
940
941 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
942 if (strcmp(cursrv->id, name))
943 continue;
944
945 if (!target) {
946 target = cursrv;
947 continue;
948 }
949
Christopher Faulet767a84b2017-11-24 16:50:31 +0100950 ha_alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
951 name, px->id);
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100952
953 return NULL;
954 }
955
956 return target;
957}
958
Willy Tarreauff01a212009-03-15 13:46:16 +0100959/* This function checks that the designated proxy has no http directives
960 * enabled. It will output a warning if there are, and will fix some of them.
961 * It returns the number of fatal errors encountered. This should be called
962 * at the end of the configuration parsing if the proxy is not in http mode.
963 * The <file> argument is used to construct the error message.
964 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200965int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100966{
967 if (curproxy->cookie_name != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100968 ha_warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
969 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100970 }
Willy Tarreauff01a212009-03-15 13:46:16 +0100971 if (curproxy->monitor_uri != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100972 ha_warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
973 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100974 }
Willy Tarreauf3e49f92009-10-03 12:21:20 +0200975 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100976 curproxy->lbprm.algo &= ~BE_LB_ALGO;
977 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100978 ha_warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
979 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100980 }
Willy Tarreau17804162009-11-09 21:27:51 +0100981 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
982 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Christopher Faulet767a84b2017-11-24 16:50:31 +0100983 ha_warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
984 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
985 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau17804162009-11-09 21:27:51 +0100986 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200987 if (curproxy->conf.logformat_string == default_http_log_format ||
988 curproxy->conf.logformat_string == clf_http_log_format) {
989 /* Note: we don't change the directive's file:line number */
990 curproxy->conf.logformat_string = default_tcp_log_format;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100991 ha_warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
992 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
993 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau196729e2012-05-31 19:30:26 +0200994 }
995
Willy Tarreauff01a212009-03-15 13:46:16 +0100996 return 0;
997}
998
Willy Tarreau237250c2011-07-29 01:49:03 +0200999/* Perform the most basic initialization of a proxy :
1000 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +02001001 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +02001002 */
1003void init_new_proxy(struct proxy *p)
1004{
1005 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001006 p->obj_type = OBJ_TYPE_PROXY;
Patrick Hemmer0355dab2018-05-11 12:52:31 -04001007 p->pendconns = EB_ROOT;
Willy Tarreau237250c2011-07-29 01:49:03 +02001008 LIST_INIT(&p->acl);
1009 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001010 LIST_INIT(&p->http_res_rules);
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01001011 LIST_INIT(&p->http_after_res_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +02001012 LIST_INIT(&p->redirect_rules);
1013 LIST_INIT(&p->mon_fail_cond);
1014 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001015 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +02001016 LIST_INIT(&p->persist_rules);
1017 LIST_INIT(&p->sticking_rules);
1018 LIST_INIT(&p->storersp_rules);
1019 LIST_INIT(&p->tcp_req.inspect_rules);
1020 LIST_INIT(&p->tcp_rep.inspect_rules);
1021 LIST_INIT(&p->tcp_req.l4_rules);
Willy Tarreau620408f2016-10-21 16:37:51 +02001022 LIST_INIT(&p->tcp_req.l5_rules);
Olivier Houchard859dc802019-08-08 15:47:21 +02001023 MT_LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +02001024 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +01001025 LIST_INIT(&p->logformat);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02001026 LIST_INIT(&p->logformat_sd);
William Lallemanda73203e2012-03-12 12:48:57 +01001027 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001028 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +02001029 LIST_INIT(&p->conf.listeners);
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001030 LIST_INIT(&p->conf.errors);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001031 LIST_INIT(&p->conf.args.list);
Christopher Faulet443ea1a2016-02-04 13:40:26 +01001032 LIST_INIT(&p->filter_configs);
Christopher Faulet7a1e2e12020-04-02 18:05:11 +02001033 LIST_INIT(&p->tcpcheck_rules.preset_vars);
Willy Tarreau237250c2011-07-29 01:49:03 +02001034
1035 /* Timeouts are defined as -1 */
1036 proxy_reset_timeouts(p);
1037 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +02001038
1039 /* initial uuid is unassigned (-1) */
1040 p->uuid = -1;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001041
Olivier Houcharda254a372019-04-05 15:30:12 +02001042 /* Default to only allow L4 retries */
1043 p->retry_type = PR_RE_CONN_FAILED;
1044
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001045 HA_SPIN_INIT(&p->lock);
Willy Tarreau237250c2011-07-29 01:49:03 +02001046}
1047
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +01001048/*
Willy Tarreaue91bff22020-09-02 11:11:43 +02001049 * This function finishes the startup of proxies by marking them ready. */
1050void start_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001051{
1052 struct proxy *curproxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001053
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001054 for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001055 if (curproxy->state != PR_STNEW)
1056 continue; /* already initialized */
1057
Willy Tarreaue91bff22020-09-02 11:11:43 +02001058 curproxy->state = PR_STREADY;
1059 send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001060 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001061}
1062
1063
1064/*
Willy Tarreau918ff602011-07-25 16:33:49 +02001065 * This is the proxy management task. It enables proxies when there are enough
Willy Tarreau87b09662015-04-03 00:22:06 +02001066 * free streams, or stops them when the table is full. It is designed to be
Willy Tarreau918ff602011-07-25 16:33:49 +02001067 * called as a task which is woken up upon stopping or when rate limiting must
1068 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001069 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001070struct task *manage_proxy(struct task *t, void *context, unsigned short state)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001071{
Olivier Houchard9f6af332018-05-25 14:04:04 +02001072 struct proxy *p = context;
Willy Tarreau918ff602011-07-25 16:33:49 +02001073 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +01001074 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001075
Willy Tarreau918ff602011-07-25 16:33:49 +02001076 /* We should periodically try to enable listeners waiting for a
1077 * global resource here.
1078 */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001079
Willy Tarreau918ff602011-07-25 16:33:49 +02001080 /* first, let's check if we need to stop the proxy */
1081 if (unlikely(stopping && p->state != PR_STSTOPPED)) {
1082 int t;
1083 t = tick_remain(now_ms, p->stop_time);
1084 if (t == 0) {
William Dauchy1e2256d2020-01-25 23:45:18 +01001085 ha_warning("Proxy %s stopped (cumulated conns: FE: %lld, BE: %lld).\n",
Christopher Faulet767a84b2017-11-24 16:50:31 +01001086 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
William Dauchy1e2256d2020-01-25 23:45:18 +01001087 send_log(p, LOG_WARNING, "Proxy %s stopped (cumulated conns: FE: %lld, BE: %lld).\n",
Willy Tarreau918ff602011-07-25 16:33:49 +02001088 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
1089 stop_proxy(p);
1090 /* try to free more memory */
Willy Tarreaubafbe012017-11-24 17:34:44 +01001091 pool_gc(NULL);
Willy Tarreau918ff602011-07-25 16:33:49 +02001092 }
1093 else {
1094 next = tick_first(next, p->stop_time);
1095 }
1096 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001097
Willy Tarreau3a925c12013-09-04 17:54:01 +02001098 /* If the proxy holds a stick table, we need to purge all unused
1099 * entries. These are all the ones in the table with ref_cnt == 0
1100 * and all the ones in the pool used to allocate new entries. Any
Willy Tarreau87b09662015-04-03 00:22:06 +02001101 * entry attached to an existing stream waiting for a store will
Willy Tarreau3a925c12013-09-04 17:54:01 +02001102 * be in neither list. Any entry being dumped will have ref_cnt > 0.
1103 * However we protect tables that are being synced to peers.
1104 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001105 if (unlikely(stopping && p->state == PR_STSTOPPED && p->table && p->table->current)) {
1106 if (!p->table->syncing) {
1107 stktable_trash_oldest(p->table, p->table->current);
Willy Tarreaubafbe012017-11-24 17:34:44 +01001108 pool_gc(NULL);
Willy Tarreau3a925c12013-09-04 17:54:01 +02001109 }
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001110 if (p->table->current) {
Willy Tarreau3a925c12013-09-04 17:54:01 +02001111 /* some entries still remain, let's recheck in one second */
1112 next = tick_first(next, tick_add(now_ms, 1000));
1113 }
1114 }
1115
Willy Tarreau918ff602011-07-25 16:33:49 +02001116 /* the rest below is just for frontends */
1117 if (!(p->cap & PR_CAP_FE))
1118 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001119
Willy Tarreau918ff602011-07-25 16:33:49 +02001120 /* check the various reasons we may find to block the frontend */
1121 if (unlikely(p->feconn >= p->maxconn)) {
1122 if (p->state == PR_STREADY)
1123 p->state = PR_STFULL;
1124 goto out;
1125 }
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001126
Willy Tarreau918ff602011-07-25 16:33:49 +02001127 /* OK we have no reason to block, so let's unblock if we were blocking */
1128 if (p->state == PR_STFULL)
1129 p->state = PR_STREADY;
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001130
Willy Tarreau918ff602011-07-25 16:33:49 +02001131 if (p->fe_sps_lim &&
1132 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
1133 /* we're blocking because a limit was reached on the number of
1134 * requests/s on the frontend. We want to re-check ASAP, which
1135 * means in 1 ms before estimated expiration date, because the
1136 * timer will have settled down.
1137 */
1138 next = tick_first(next, tick_add(now_ms, wait));
1139 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001140 }
Willy Tarreau918ff602011-07-25 16:33:49 +02001141
1142 /* The proxy is not limited so we can re-enable any waiting listener */
Willy Tarreau241797a2019-12-10 14:10:52 +01001143 dequeue_proxy_listeners(p);
Willy Tarreau918ff602011-07-25 16:33:49 +02001144 out:
1145 t->expire = next;
1146 task_queue(t);
1147 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001148}
1149
1150
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001151static int proxy_parse_hard_stop_after(char **args, int section_type, struct proxy *curpx,
1152 struct proxy *defpx, const char *file, int line,
1153 char **err)
1154{
1155 const char *res;
1156
1157 if (!*args[1]) {
1158 memprintf(err, "'%s' expects <time> as argument.\n", args[0]);
1159 return -1;
1160 }
1161 res = parse_time_err(args[1], &global.hard_stop_after, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02001162 if (res == PARSE_TIME_OVER) {
1163 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
1164 args[1], args[0]);
1165 return -1;
1166 }
1167 else if (res == PARSE_TIME_UNDER) {
1168 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
1169 args[1], args[0]);
1170 return -1;
1171 }
1172 else if (res) {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001173 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
1174 return -1;
1175 }
1176 return 0;
1177}
1178
Olivier Houchard9f6af332018-05-25 14:04:04 +02001179struct task *hard_stop(struct task *t, void *context, unsigned short state)
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001180{
1181 struct proxy *p;
1182 struct stream *s;
1183
1184 if (killed) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001185 ha_warning("Some tasks resisted to hard-stop, exiting now.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001186 send_log(NULL, LOG_WARNING, "Some tasks resisted to hard-stop, exiting now.\n");
Willy Tarreau7067b3a2019-06-02 11:11:29 +02001187 killed = 2;
1188 t->expire = TICK_ETERNITY;
1189 return t;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001190 }
1191
Christopher Faulet767a84b2017-11-24 16:50:31 +01001192 ha_warning("soft-stop running for too long, performing a hard-stop.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001193 send_log(NULL, LOG_WARNING, "soft-stop running for too long, performing a hard-stop.\n");
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001194 p = proxies_list;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001195 while (p) {
1196 if ((p->cap & PR_CAP_FE) && (p->feconn > 0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001197 ha_warning("Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1198 p->id, p->feconn);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001199 send_log(p, LOG_WARNING, "Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1200 p->id, p->feconn);
1201 }
1202 p = p->next;
1203 }
1204 list_for_each_entry(s, &streams, list) {
1205 stream_shutdown(s, SF_ERR_KILLED);
1206 }
1207
1208 killed = 1;
1209 t->expire = tick_add(now_ms, MS_TO_TICKS(1000));
1210 return t;
1211}
1212
Willy Tarreaubaaee002006-06-26 02:48:02 +02001213/*
1214 * this function disables health-check servers so that the process will quickly be ignored
1215 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
1216 * time will not be used since it would already not listen anymore to the socket.
1217 */
1218void soft_stop(void)
1219{
1220 struct proxy *p;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001221 struct peers *prs;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001222 struct task *task;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001223
1224 stopping = 1;
William Dauchy3894d972019-12-28 15:36:02 +01001225 /* disable busy polling to avoid cpu eating for the new process */
1226 global.tune.options &= ~GTUNE_BUSY_POLLING;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001227 if (tick_isset(global.hard_stop_after)) {
Emeric Brunc60def82017-09-27 14:59:38 +02001228 task = task_new(MAX_THREADS_MASK);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001229 if (task) {
1230 task->process = hard_stop;
1231 task_schedule(task, tick_add(now_ms, global.hard_stop_after));
1232 }
1233 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001234 ha_alert("out of memory trying to allocate the hard-stop task.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001235 }
1236 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001237 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001238 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001239 while (p) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001240 /* Zombie proxy, let's close the file descriptors */
1241 if (p->state == PR_STSTOPPED &&
1242 !LIST_ISEMPTY(&p->conf.listeners) &&
1243 LIST_ELEM(p->conf.listeners.n,
Willy Tarreau67878d72019-12-10 07:11:35 +01001244 struct listener *, by_fe)->state > LI_ASSIGNED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02001245 struct listener *l;
1246 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreau67878d72019-12-10 07:11:35 +01001247 if (l->state > LI_ASSIGNED)
Willy Tarreau38ba6472020-08-27 08:16:52 +02001248 close(l->rx.fd);
Olivier Houchard1fc05162017-04-06 01:05:05 +02001249 l->state = LI_INIT;
1250 }
1251 }
1252
Willy Tarreaubaaee002006-06-26 02:48:02 +02001253 if (p->state != PR_STSTOPPED) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001254 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 +02001255 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 +02001256 p->stop_time = tick_add(now_ms, p->grace);
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001257
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001258 /* Note: do not wake up stopped proxies' task nor their tables'
1259 * tasks as these ones might point to already released entries.
1260 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001261 if (p->table && p->table->size && p->table->sync_task)
1262 task_wakeup(p->table->sync_task, TASK_WOKEN_MSG);
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001263
1264 if (p->task)
1265 task_wakeup(p->task, TASK_WOKEN_MSG);
1266 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001267 p = p->next;
1268 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001269
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001270 prs = cfg_peers;
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001271 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001272 if (prs->peers_fe)
1273 stop_proxy(prs->peers_fe);
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001274 prs = prs->next;
1275 }
Willy Tarreaud0807c32010-08-27 18:26:11 +02001276 /* signal zero is used to broadcast the "stopping" event */
1277 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001278}
1279
1280
Willy Tarreaube58c382011-07-24 18:28:10 +02001281/* Temporarily disables listening on all of the proxy's listeners. Upon
1282 * success, the proxy enters the PR_PAUSED state. If disabling at least one
1283 * listener returns an error, then the proxy state is set to PR_STERROR
Willy Tarreauce8fe252011-09-07 19:14:57 +02001284 * because we don't know how to resume from this. The function returns 0
1285 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001286 */
Willy Tarreauce8fe252011-09-07 19:14:57 +02001287int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001288{
1289 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +02001290
1291 if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
1292 p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
1293 return 1;
1294
Christopher Faulet767a84b2017-11-24 16:50:31 +01001295 ha_warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001296 send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
1297
Willy Tarreau4348fad2012-09-20 16:48:07 +02001298 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreaube58c382011-07-24 18:28:10 +02001299 if (!pause_listener(l))
Willy Tarreaubaaee002006-06-26 02:48:02 +02001300 p->state = PR_STERROR;
1301 }
Willy Tarreauce8fe252011-09-07 19:14:57 +02001302
1303 if (p->state == PR_STERROR) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001304 ha_warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001305 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
1306 return 0;
1307 }
1308
1309 p->state = PR_STPAUSED;
1310 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +02001311}
1312
Olivier Houchard1fc05162017-04-06 01:05:05 +02001313/* This function makes the proxy unusable, but keeps the listening sockets
1314 * opened, so that if any process requests them, we are able to serve them.
1315 * This should only be called early, before we started accepting requests.
1316 */
1317void zombify_proxy(struct proxy *p)
1318{
1319 struct listener *l;
1320 struct listener *first_to_listen = NULL;
1321
1322 list_for_each_entry(l, &p->conf.listeners, by_fe) {
1323 enum li_state oldstate = l->state;
1324
1325 unbind_listener_no_close(l);
1326 if (l->state >= LI_ASSIGNED) {
1327 delete_listener(l);
Olivier Houchard1fc05162017-04-06 01:05:05 +02001328 }
1329 /*
1330 * Pretend we're still up and running so that the fd
1331 * will be sent if asked.
1332 */
1333 l->state = LI_ZOMBIE;
1334 if (!first_to_listen && oldstate >= LI_LISTEN)
1335 first_to_listen = l;
1336 }
1337 /* Quick hack : at stop time, to know we have to close the sockets
1338 * despite the proxy being marked as stopped, make the first listener
1339 * of the listener list an active one, so that we don't have to
1340 * parse the whole list to be sure.
1341 */
1342 if (first_to_listen && LIST_ELEM(p->conf.listeners.n,
1343 struct listener *, by_fe) != first_to_listen) {
1344 LIST_DEL(&l->by_fe);
1345 LIST_ADD(&p->conf.listeners, &l->by_fe);
1346 }
1347
1348 p->state = PR_STSTOPPED;
1349}
Willy Tarreauda250db2008-10-12 12:07:48 +02001350
1351/*
1352 * This function completely stops a proxy and releases its listeners. It has
1353 * to be called when going down in order to release the ports so that another
1354 * process may bind to them. It must also be called on disabled proxies at the
William Lallemandc59f9882018-11-16 16:57:21 +01001355 * end of start-up. If all listeners are closed, the proxy is set to the
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001356 * PR_STSTOPPED state. The function takes the proxy's lock so it's safe to
1357 * call from multiple places.
Willy Tarreauda250db2008-10-12 12:07:48 +02001358 */
1359void stop_proxy(struct proxy *p)
1360{
1361 struct listener *l;
William Lallemandc59f9882018-11-16 16:57:21 +01001362 int nostop = 0;
Willy Tarreauda250db2008-10-12 12:07:48 +02001363
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001364 HA_SPIN_LOCK(PROXY_LOCK, &p->lock);
1365
Willy Tarreau4348fad2012-09-20 16:48:07 +02001366 list_for_each_entry(l, &p->conf.listeners, by_fe) {
William Lallemandc59f9882018-11-16 16:57:21 +01001367 if (l->options & LI_O_NOSTOP) {
1368 HA_ATOMIC_ADD(&unstoppable_jobs, 1);
1369 nostop = 1;
1370 continue;
1371 }
William Lallemandf7f488d2019-10-18 21:16:39 +02001372 /* The master should not close an inherited FD */
Willy Tarreau43046fa2020-09-01 15:41:59 +02001373 if (master && (l->rx.flags & RX_F_INHERITED))
William Lallemandf7f488d2019-10-18 21:16:39 +02001374 unbind_listener_no_close(l);
1375 else
1376 unbind_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001377 if (l->state >= LI_ASSIGNED) {
1378 delete_listener(l);
Willy Tarreauda250db2008-10-12 12:07:48 +02001379 }
1380 }
William Lallemandc59f9882018-11-16 16:57:21 +01001381 if (!nostop)
1382 p->state = PR_STSTOPPED;
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001383
1384 HA_SPIN_UNLOCK(PROXY_LOCK, &p->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001385}
1386
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001387/* This function resumes listening on the specified proxy. It scans all of its
1388 * listeners and tries to enable them all. If any of them fails, the proxy is
1389 * put back to the paused state. It returns 1 upon success, or zero if an error
1390 * is encountered.
1391 */
1392int resume_proxy(struct proxy *p)
1393{
1394 struct listener *l;
1395 int fail;
1396
1397 if (p->state != PR_STPAUSED)
1398 return 1;
1399
Christopher Faulet767a84b2017-11-24 16:50:31 +01001400 ha_warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001401 send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
1402
1403 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +02001404 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001405 if (!resume_listener(l)) {
1406 int port;
1407
Willy Tarreau37159062020-08-27 07:48:42 +02001408 port = get_host_port(&l->rx.addr);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001409 if (port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001410 ha_warning("Port %d busy while trying to enable %s %s.\n",
1411 port, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001412 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
1413 port, proxy_cap_str(p->cap), p->id);
1414 }
1415 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001416 ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
1417 l->luid, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001418 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
1419 l->luid, proxy_cap_str(p->cap), p->id);
1420 }
1421
1422 /* Another port might have been enabled. Let's stop everything. */
1423 fail = 1;
1424 break;
1425 }
1426 }
1427
1428 p->state = PR_STREADY;
1429 if (fail) {
1430 pause_proxy(p);
1431 return 0;
1432 }
1433 return 1;
1434}
1435
Willy Tarreaubaaee002006-06-26 02:48:02 +02001436/*
1437 * This function temporarily disables listening so that another new instance
1438 * can start listening. It is designed to be called upon reception of a
1439 * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
1440 * the proxy, or a SIGTTIN can be sent to listen again.
1441 */
1442void pause_proxies(void)
1443{
1444 int err;
1445 struct proxy *p;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001446 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001447
1448 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001449 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001450 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001451 while (p) {
Willy Tarreauce8fe252011-09-07 19:14:57 +02001452 err |= !pause_proxy(p);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001453 p = p->next;
1454 }
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001455
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001456 prs = cfg_peers;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001457 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001458 if (prs->peers_fe)
1459 err |= !pause_proxy(prs->peers_fe);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001460 prs = prs->next;
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001461 }
1462
Willy Tarreaubaaee002006-06-26 02:48:02 +02001463 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001464 ha_warning("Some proxies refused to pause, performing soft stop now.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02001465 send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
1466 soft_stop();
1467 }
1468}
1469
1470
1471/*
1472 * This function reactivates listening. This can be used after a call to
1473 * sig_pause(), for example when a new instance has failed starting up.
1474 * It is designed to be called upon reception of a SIGTTIN.
1475 */
Willy Tarreaube58c382011-07-24 18:28:10 +02001476void resume_proxies(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001477{
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001478 int err;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001479 struct proxy *p;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001480 struct peers *prs;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001481
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001482 err = 0;
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001483 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001484 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001485 while (p) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001486 err |= !resume_proxy(p);
1487 p = p->next;
1488 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001489
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001490 prs = cfg_peers;
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001491 while (prs) {
Willy Tarreau337a6662015-09-28 16:27:44 +02001492 if (prs->peers_fe)
1493 err |= !resume_proxy(prs->peers_fe);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001494 prs = prs->next;
1495 }
Willy Tarreaube58c382011-07-24 18:28:10 +02001496
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001497 if (err) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001498 ha_warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001499 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 +02001500 }
1501}
1502
Willy Tarreau87b09662015-04-03 00:22:06 +02001503/* Set current stream's backend to <be>. Nothing is done if the
1504 * stream already had a backend assigned, which is indicated by
Willy Tarreaue7dff022015-04-03 01:14:29 +02001505 * s->flags & SF_BE_ASSIGNED.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001506 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001507 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001508 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001509int stream_set_backend(struct stream *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001510{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001511 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001512 return 1;
Christopher Faulet41179042016-06-21 11:54:52 +02001513
1514 if (flt_set_stream_backend(s, be) < 0)
1515 return 0;
1516
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001517 s->be = be;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001518 HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
1519 HA_ATOMIC_ADD(&be->beconn, 1));
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001520 proxy_inc_be_ctr(be);
1521
Willy Tarreau87b09662015-04-03 00:22:06 +02001522 /* assign new parameters to the stream from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +02001523 s->si[1].flags &= ~SI_FL_INDEP_STR;
1524 if (be->options2 & PR_O2_INDEPSTR)
1525 s->si[1].flags |= SI_FL_INDEP_STR;
1526
Hongbo Longe39683c2017-03-10 18:41:51 +01001527 if (tick_isset(be->timeout.serverfin))
1528 s->si[1].hcto = be->timeout.serverfin;
1529
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001530 /* We want to enable the backend-specific analysers except those which
1531 * were already run as part of the frontend/listener. Note that it would
1532 * be more reliable to store the list of analysers that have been run,
1533 * but what we do here is OK for now.
1534 */
Christopher Faulet70e2f272017-01-09 16:33:19 +01001535 s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001536
Willy Tarreau51aecc72009-07-12 09:47:04 +02001537 /* If the target backend requires HTTP processing, we have to allocate
Christopher Faulet711ed6a2019-07-16 14:16:10 +02001538 * the HTTP transaction if we did not have one.
Willy Tarreau51aecc72009-07-12 09:47:04 +02001539 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001540 if (unlikely(!s->txn && be->http_needed)) {
1541 if (unlikely(!http_alloc_txn(s)))
Willy Tarreau51aecc72009-07-12 09:47:04 +02001542 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +02001543
1544 /* and now initialize the HTTP transaction state */
1545 http_init_txn(s);
Willy Tarreau51aecc72009-07-12 09:47:04 +02001546 }
1547
Christopher Faulet309c6412015-12-02 09:57:32 +01001548 /* Be sure to filter request headers if the backend is an HTTP proxy and
1549 * if there are filters attached to the stream. */
1550 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +01001551 s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +01001552
Willy Tarreaueee5b512015-04-03 23:46:31 +02001553 if (s->txn) {
Christopher Fauletbbe68542019-04-08 10:53:51 +02001554 /* If we chain a TCP frontend to an HTX backend, we must upgrade
1555 * the client mux */
Christopher Faulet60d29b32019-07-15 15:00:25 +02001556 if (!IS_HTX_STRM(s) && be->mode == PR_MODE_HTTP) {
Christopher Fauletbbe68542019-04-08 10:53:51 +02001557 struct connection *conn = objt_conn(strm_sess(s)->origin);
1558 struct conn_stream *cs = objt_cs(s->si[0].end);
1559
1560 if (conn && cs) {
1561 si_rx_endp_more(&s->si[0]);
Olivier Houchard2ab3dad2019-07-03 13:08:18 +02001562 /* Make sure we're unsubscribed, the the new
1563 * mux will probably want to subscribe to
1564 * the underlying XPRT
1565 */
1566 if (s->si[0].wait_event.events)
1567 conn->mux->unsubscribe(cs, s->si[0].wait_event.events,
1568 &s->si[0].wait_event);
Christopher Fauletc985f6c2019-07-15 11:42:52 +02001569 if (conn_upgrade_mux_fe(conn, cs, &s->req.buf, ist(""), PROTO_MODE_HTTP) == -1)
Christopher Fauletbbe68542019-04-08 10:53:51 +02001570 return 0;
Olivier Houchard4c18f942019-07-31 18:05:26 +02001571 if (!strcmp(conn->mux->name, "H2")) {
1572 /* For HTTP/2, destroy the conn_stream,
1573 * disable logging, and pretend that we
1574 * failed, to that the stream is
1575 * silently destroyed. The new mux
1576 * will create new streams.
1577 */
Olivier Houchard59dd06d2019-08-09 18:01:15 +02001578 cs_free(cs);
Olivier Houchard4c18f942019-07-31 18:05:26 +02001579 si_detach_endpoint(&s->si[0]);
1580 s->logs.logwait = 0;
1581 s->logs.level = 0;
1582 s->flags |= SF_IGNORE;
1583 return 0;
1584 }
Olivier Houchard71b20c22019-08-09 17:50:05 +02001585 s->flags |= SF_HTX;
Christopher Fauletbbe68542019-04-08 10:53:51 +02001586 }
1587 }
Christopher Fauleteec7f8a2019-12-20 15:59:20 +01001588 else if (IS_HTX_STRM(s) && be->mode != PR_MODE_HTTP) {
1589 /* If a TCP backend is assgiend to an HTX stream, return
1590 * an error. It may happens for a new stream on a
Ilya Shipitsin47d17182020-06-21 21:42:57 +05001591 * previously upgraded connections. */
Christopher Fauleteec7f8a2019-12-20 15:59:20 +01001592 if (!(s->flags & SF_ERR_MASK))
1593 s->flags |= SF_ERR_INTERNAL;
1594 return 0;
1595 }
Christopher Fauletbbe68542019-04-08 10:53:51 +02001596
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001597 /* we may request to parse a request body */
Christopher Faulet711ed6a2019-07-16 14:16:10 +02001598 if (be->options & PR_O_WREQ_BODY)
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001599 s->req.analysers |= AN_REQ_HTTP_BODY;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001600 }
1601
1602 s->flags |= SF_BE_ASSIGNED;
Willy Tarreau96e31212011-05-30 18:10:30 +02001603 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001604 s->req.flags |= CF_NEVER_WAIT;
1605 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02001606 }
1607
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001608 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001609}
1610
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001611/* Capture a bad request or response and archive it in the proxy's structure.
1612 * It is relatively protocol-agnostic so it requires that a number of elements
1613 * are passed :
1614 * - <proxy> is the proxy where the error was detected and where the snapshot
1615 * needs to be stored
Joseph Herlant59dd2952018-11-15 11:46:55 -08001616 * - <is_back> indicates that the error happened when receiving the response
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001617 * - <other_end> is a pointer to the proxy on the other side when known
1618 * - <target> is the target of the connection, usually a server or a proxy
1619 * - <sess> is the session which experienced the error
1620 * - <ctx> may be NULL or should contain any info relevant to the protocol
1621 * - <buf> is the buffer containing the offending data
1622 * - <buf_ofs> is the position of this buffer's input data in the input
1623 * stream, starting at zero. It may be passed as zero if unknown.
1624 * - <buf_out> is the portion of <buf->data> which was already forwarded and
1625 * which precedes the buffer's input. The buffer's input starts at
1626 * buf->head + buf_out.
1627 * - <err_pos> is the pointer to the faulty byte in the buffer's input.
1628 * - <show> is the callback to use to display <ctx>. It may be NULL.
1629 */
1630void proxy_capture_error(struct proxy *proxy, int is_back,
1631 struct proxy *other_end, enum obj_type *target,
1632 const struct session *sess,
1633 const struct buffer *buf, long buf_ofs,
1634 unsigned int buf_out, unsigned int err_pos,
1635 const union error_snapshot_ctx *ctx,
1636 void (*show)(struct buffer *, const struct error_snapshot *))
1637{
1638 struct error_snapshot *es;
1639 unsigned int buf_len;
1640 int len1, len2;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001641 unsigned int ev_id;
1642
1643 ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
1644
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001645 buf_len = b_data(buf) - buf_out;
1646
1647 es = malloc(sizeof(*es) + buf_len);
Willy Tarreauc55015e2018-09-07 19:02:32 +02001648 if (!es)
1649 return;
1650
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001651 es->buf_len = buf_len;
1652 es->ev_id = ev_id;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001653
Christopher Faulet47a72102020-01-06 11:37:00 +01001654 len1 = b_size(buf) - b_peek_ofs(buf, buf_out);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001655 if (len1 > buf_len)
1656 len1 = buf_len;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001657
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001658 if (len1) {
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001659 memcpy(es->buf, b_peek(buf, buf_out), len1);
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001660 len2 = buf_len - len1;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001661 if (len2)
1662 memcpy(es->buf + len1, b_orig(buf), len2);
1663 }
1664
1665 es->buf_err = err_pos;
1666 es->when = date; // user-visible date
1667 es->srv = objt_server(target);
1668 es->oe = other_end;
Olivier Houchardbdb00c52020-03-12 15:30:17 +01001669 if (sess && objt_conn(sess->origin) && conn_get_src(__objt_conn(sess->origin)))
Willy Tarreau026efc72019-07-17 15:20:02 +02001670 es->src = *__objt_conn(sess->origin)->src;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001671 else
1672 memset(&es->src, 0, sizeof(es->src));
1673
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001674 es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
1675 es->buf_out = buf_out;
1676 es->buf_ofs = buf_ofs;
1677
1678 /* be sure to indicate the offset of the first IN byte */
1679 if (es->buf_ofs >= es->buf_len)
1680 es->buf_ofs -= es->buf_len;
1681 else
1682 es->buf_ofs = 0;
1683
1684 /* protocol-specific part now */
1685 if (ctx)
1686 es->ctx = *ctx;
1687 else
1688 memset(&es->ctx, 0, sizeof(es->ctx));
1689 es->show = show;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001690
1691 /* note: we still lock since we have to be certain that nobody is
1692 * dumping the output while we free.
1693 */
1694 HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
1695 if (is_back) {
1696 es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
1697 } else {
1698 es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
1699 }
1700 free(es);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001701 HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
1702}
1703
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001704/* Configure all proxies which lack a maxconn setting to use the global one by
1705 * default. This avoids the common mistake consisting in setting maxconn only
1706 * in the global section and discovering the hard way that it doesn't propagate
1707 * through the frontends. These values are also propagated through the various
Ilya Shipitsin47d17182020-06-21 21:42:57 +05001708 * targeted backends, whose fullconn is finally calculated if not yet set.
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001709 */
1710void proxy_adjust_all_maxconn()
1711{
1712 struct proxy *curproxy;
1713 struct switching_rule *swrule1, *swrule2;
1714
1715 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1716 if (curproxy->state == PR_STSTOPPED)
1717 continue;
1718
1719 if (!(curproxy->cap & PR_CAP_FE))
1720 continue;
1721
1722 if (!curproxy->maxconn)
1723 curproxy->maxconn = global.maxconn;
1724
1725 /* update the target backend's fullconn count : default_backend */
1726 if (curproxy->defbe.be)
1727 curproxy->defbe.be->tot_fe_maxconn += curproxy->maxconn;
1728 else if ((curproxy->cap & PR_CAP_LISTEN) == PR_CAP_LISTEN)
1729 curproxy->tot_fe_maxconn += curproxy->maxconn;
1730
1731 list_for_each_entry(swrule1, &curproxy->switching_rules, list) {
1732 /* For each target of switching rules, we update their
1733 * tot_fe_maxconn, except if a previous rule points to
1734 * the same backend or to the default backend.
1735 */
1736 if (swrule1->be.backend != curproxy->defbe.be) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001737 /* note: swrule1->be.backend isn't a backend if the rule
1738 * is dynamic, it's an expression instead, so it must not
1739 * be dereferenced as a backend before being certain it is.
1740 */
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001741 list_for_each_entry(swrule2, &curproxy->switching_rules, list) {
1742 if (swrule2 == swrule1) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001743 if (!swrule1->dynamic)
1744 swrule1->be.backend->tot_fe_maxconn += curproxy->maxconn;
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001745 break;
1746 }
1747 else if (!swrule2->dynamic && swrule2->be.backend == swrule1->be.backend) {
1748 /* there are multiple refs of this backend */
1749 break;
1750 }
1751 }
1752 }
1753 }
1754 }
1755
1756 /* automatically compute fullconn if not set. We must not do it in the
1757 * loop above because cross-references are not yet fully resolved.
1758 */
1759 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
1760 if (curproxy->state == PR_STSTOPPED)
1761 continue;
1762
1763 /* If <fullconn> is not set, let's set it to 10% of the sum of
1764 * the possible incoming frontend's maxconns.
1765 */
1766 if (!curproxy->fullconn && (curproxy->cap & PR_CAP_BE)) {
1767 /* we have the sum of the maxconns in <total>. We only
1768 * keep 10% of that sum to set the default fullconn, with
1769 * a hard minimum of 1 (to avoid a divide by zero).
1770 */
1771 curproxy->fullconn = (curproxy->tot_fe_maxconn + 9) / 10;
1772 if (!curproxy->fullconn)
1773 curproxy->fullconn = 1;
1774 }
1775 }
1776}
1777
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001778/* Config keywords below */
1779
Willy Tarreaudc13c112013-06-21 23:16:39 +02001780static struct cfg_kw_list cfg_kws = {ILH, {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001781 { CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001782 { CFG_LISTEN, "timeout", proxy_parse_timeout },
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +02001783 { CFG_LISTEN, "clitimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1784 { CFG_LISTEN, "contimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1785 { 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 +01001786 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreauc35362a2014-04-25 13:58:37 +02001787 { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +02001788 { CFG_LISTEN, "declare", proxy_parse_declare },
Olivier Houcharda254a372019-04-05 15:30:12 +02001789 { CFG_LISTEN, "retry-on", proxy_parse_retry_on },
Willy Tarreau52543212020-07-09 05:58:51 +02001790#ifdef TCP_KEEPCNT
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +09001791 { CFG_LISTEN, "clitcpka-cnt", proxy_parse_tcpka_cnt },
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +09001792 { CFG_LISTEN, "srvtcpka-cnt", proxy_parse_tcpka_cnt },
Willy Tarreau52543212020-07-09 05:58:51 +02001793#endif
1794#ifdef TCP_KEEPIDLE
1795 { CFG_LISTEN, "clitcpka-idle", proxy_parse_tcpka_idle },
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +09001796 { CFG_LISTEN, "srvtcpka-idle", proxy_parse_tcpka_idle },
Willy Tarreau52543212020-07-09 05:58:51 +02001797#endif
1798#ifdef TCP_KEEPINTVL
1799 { CFG_LISTEN, "clitcpka-intvl", proxy_parse_tcpka_intvl },
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +09001800 { CFG_LISTEN, "srvtcpka-intvl", proxy_parse_tcpka_intvl },
Willy Tarreau52543212020-07-09 05:58:51 +02001801#endif
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001802 { 0, NULL, NULL },
1803}};
1804
Willy Tarreau0108d902018-11-25 19:14:37 +01001805INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
1806
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001807/* Expects to find a frontend named <arg> and returns it, otherwise displays various
1808 * adequate error messages and returns NULL. This function is designed to be used by
1809 * functions requiring a frontend on the CLI.
1810 */
1811struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
1812{
1813 struct proxy *px;
1814
1815 if (!*arg) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001816 cli_err(appctx, "A frontend name is expected.\n");
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001817 return NULL;
1818 }
1819
1820 px = proxy_fe_by_name(arg);
1821 if (!px) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001822 cli_err(appctx, "No such frontend.\n");
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001823 return NULL;
1824 }
1825 return px;
1826}
1827
Olivier Houchard614f8d72017-03-14 20:08:46 +01001828/* Expects to find a backend named <arg> and returns it, otherwise displays various
1829 * adequate error messages and returns NULL. This function is designed to be used by
1830 * functions requiring a frontend on the CLI.
1831 */
1832struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
1833{
1834 struct proxy *px;
1835
1836 if (!*arg) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001837 cli_err(appctx, "A backend name is expected.\n");
Olivier Houchard614f8d72017-03-14 20:08:46 +01001838 return NULL;
1839 }
1840
1841 px = proxy_be_by_name(arg);
1842 if (!px) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001843 cli_err(appctx, "No such backend.\n");
Olivier Houchard614f8d72017-03-14 20:08:46 +01001844 return NULL;
1845 }
1846 return px;
1847}
1848
1849
Willy Tarreau69f591e2020-07-01 07:00:59 +02001850/* parse a "show servers [state|conn]" CLI line, returns 0 if it wants to start
1851 * the dump or 1 if it stops immediately. If an argument is specified, it will
1852 * set the proxy pointer into cli.p0 and its ID into cli.i0. It sets cli.o0 to
1853 * 0 for "state", or 1 for "conn".
William Lallemanda6c5f332016-11-19 02:25:36 +01001854 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001855static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemanda6c5f332016-11-19 02:25:36 +01001856{
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001857 struct proxy *px;
William Lallemanda6c5f332016-11-19 02:25:36 +01001858
Willy Tarreau69f591e2020-07-01 07:00:59 +02001859 appctx->ctx.cli.o0 = *args[2] == 'c'; // "conn" vs "state"
1860
William Lallemanda6c5f332016-11-19 02:25:36 +01001861 /* check if a backend name has been provided */
1862 if (*args[3]) {
1863 /* read server state from local file */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001864 px = proxy_be_by_name(args[3]);
William Lallemanda6c5f332016-11-19 02:25:36 +01001865
Willy Tarreau9d008692019-08-09 11:21:01 +02001866 if (!px)
1867 return cli_err(appctx, "Can't find backend.\n");
1868
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001869 appctx->ctx.cli.p0 = px;
1870 appctx->ctx.cli.i0 = px->uuid;
William Lallemanda6c5f332016-11-19 02:25:36 +01001871 }
1872 return 0;
1873}
1874
Willy Tarreau6ff81432020-07-01 07:02:42 +02001875/* dumps server state information for all the servers found in backend cli.p0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001876 * These information are all the parameters which may change during HAProxy runtime.
1877 * By default, we only export to the last known server state file format.
1878 * These information can be used at next startup to recover same level of server state.
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001879 * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
1880 * pointer from cli.p1.
William Lallemanda6c5f332016-11-19 02:25:36 +01001881 */
Willy Tarreau6ff81432020-07-01 07:02:42 +02001882static int dump_servers_state(struct stream_interface *si)
William Lallemanda6c5f332016-11-19 02:25:36 +01001883{
1884 struct appctx *appctx = __objt_appctx(si->end);
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001885 struct proxy *px = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001886 struct server *srv;
1887 char srv_addr[INET6_ADDRSTRLEN + 1];
1888 time_t srv_time_since_last_change;
1889 int bk_f_forced_id, srv_f_forced_id;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001890 char *srvrecord;
William Lallemanda6c5f332016-11-19 02:25:36 +01001891
William Lallemanda6c5f332016-11-19 02:25:36 +01001892 /* we don't want to report any state if the backend is not enabled on this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001893 if (!(proc_mask(px->bind_proc) & pid_bit))
William Lallemanda6c5f332016-11-19 02:25:36 +01001894 return 1;
1895
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001896 if (!appctx->ctx.cli.p1)
1897 appctx->ctx.cli.p1 = px->srv;
William Lallemanda6c5f332016-11-19 02:25:36 +01001898
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001899 for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
1900 srv = appctx->ctx.cli.p1;
William Lallemanda6c5f332016-11-19 02:25:36 +01001901 srv_addr[0] = '\0';
1902
1903 switch (srv->addr.ss_family) {
1904 case AF_INET:
1905 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
1906 srv_addr, INET_ADDRSTRLEN + 1);
1907 break;
1908 case AF_INET6:
1909 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
1910 srv_addr, INET6_ADDRSTRLEN + 1);
1911 break;
Daniel Corbett9215ffa2018-05-19 19:43:24 -04001912 default:
1913 memcpy(srv_addr, "-\0", 2);
1914 break;
William Lallemanda6c5f332016-11-19 02:25:36 +01001915 }
1916 srv_time_since_last_change = now.tv_sec - srv->last_change;
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001917 bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001918 srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
1919
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001920 srvrecord = NULL;
1921 if (srv->srvrq && srv->srvrq->name)
1922 srvrecord = srv->srvrq->name;
1923
Willy Tarreau69f591e2020-07-01 07:00:59 +02001924 if (appctx->ctx.cli.o0 == 0) {
1925 /* show servers state */
1926 chunk_printf(&trash,
1927 "%d %s "
1928 "%d %s %s "
1929 "%d %d %d %d %ld "
1930 "%d %d %d %d %d "
1931 "%d %d %s %u %s"
1932 "\n",
1933 px->uuid, px->id,
1934 srv->puid, srv->id, srv_addr,
1935 srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
1936 srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
1937 bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
1938 srvrecord ? srvrecord : "-");
1939 } else {
1940 /* show servers conn */
1941 int thr;
1942
1943 chunk_printf(&trash,
1944 "%s/%s %d/%d %s %u - %u %u %u %u %u %u %d %u",
1945 px->id, srv->id, px->uuid, srv->puid, srv_addr,srv->svc_port,
1946 srv->pool_purge_delay,
1947 srv->curr_used_conns, srv->max_used_conns, srv->est_need_conns,
1948 srv->curr_idle_nb, srv->curr_safe_nb, (int)srv->max_idle_conns, srv->curr_idle_conns);
1949
Willy Tarreau42abe682020-07-02 15:19:57 +02001950 for (thr = 0; thr < global.nbthread && srv->curr_idle_thr; thr++)
Willy Tarreau69f591e2020-07-01 07:00:59 +02001951 chunk_appendf(&trash, " %u", srv->curr_idle_thr[thr]);
1952
1953 chunk_appendf(&trash, "\n");
1954 }
1955
Willy Tarreau06d80a92017-10-19 14:32:15 +02001956 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001957 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001958 return 0;
1959 }
1960 }
1961 return 1;
1962}
1963
1964/* Parses backend list or simply use backend name provided by the user to return
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001965 * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
1966 * non-null.
William Lallemanda6c5f332016-11-19 02:25:36 +01001967 */
1968static int cli_io_handler_servers_state(struct appctx *appctx)
1969{
1970 struct stream_interface *si = appctx->owner;
William Lallemanda6c5f332016-11-19 02:25:36 +01001971 struct proxy *curproxy;
1972
1973 chunk_reset(&trash);
1974
1975 if (appctx->st2 == STAT_ST_INIT) {
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001976 if (!appctx->ctx.cli.p0)
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001977 appctx->ctx.cli.p0 = proxies_list;
William Lallemanda6c5f332016-11-19 02:25:36 +01001978 appctx->st2 = STAT_ST_HEAD;
1979 }
1980
1981 if (appctx->st2 == STAT_ST_HEAD) {
Willy Tarreau69f591e2020-07-01 07:00:59 +02001982 if (appctx->ctx.cli.o0 == 0)
1983 chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
1984 else
1985 chunk_printf(&trash,
1986 "# bkname/svname bkid/svid addr port - purge_delay used_cur used_max need_est unsafe_nb safe_nb idle_lim idle_cur idle_per_thr[%d]\n",
1987 global.nbthread);
1988
Willy Tarreau06d80a92017-10-19 14:32:15 +02001989 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001990 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001991 return 0;
1992 }
1993 appctx->st2 = STAT_ST_INFO;
1994 }
1995
1996 /* STAT_ST_INFO */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001997 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1998 curproxy = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001999 /* servers are only in backends */
2000 if (curproxy->cap & PR_CAP_BE) {
Willy Tarreau6ff81432020-07-01 07:02:42 +02002001 if (!dump_servers_state(si))
William Lallemanda6c5f332016-11-19 02:25:36 +01002002 return 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01002003 }
2004 /* only the selected proxy is dumped */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01002005 if (appctx->ctx.cli.i0)
William Lallemanda6c5f332016-11-19 02:25:36 +01002006 break;
2007 }
2008
2009 return 1;
2010}
2011
Willy Tarreau608ea592016-12-16 18:01:15 +01002012/* Parses backend list and simply report backend names. It keeps the proxy
2013 * pointer in cli.p0.
2014 */
William Lallemand933efcd2016-11-22 12:34:16 +01002015static int cli_io_handler_show_backend(struct appctx *appctx)
2016{
William Lallemand933efcd2016-11-22 12:34:16 +01002017 struct stream_interface *si = appctx->owner;
2018 struct proxy *curproxy;
2019
2020 chunk_reset(&trash);
2021
Willy Tarreau608ea592016-12-16 18:01:15 +01002022 if (!appctx->ctx.cli.p0) {
William Lallemand933efcd2016-11-22 12:34:16 +01002023 chunk_printf(&trash, "# name\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02002024 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01002025 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01002026 return 0;
2027 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002028 appctx->ctx.cli.p0 = proxies_list;
William Lallemand933efcd2016-11-22 12:34:16 +01002029 }
2030
Willy Tarreau608ea592016-12-16 18:01:15 +01002031 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
2032 curproxy = appctx->ctx.cli.p0;
William Lallemand933efcd2016-11-22 12:34:16 +01002033
2034 /* looking for backends only */
2035 if (!(curproxy->cap & PR_CAP_BE))
2036 continue;
2037
2038 /* we don't want to list a backend which is bound to this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01002039 if (!(proc_mask(curproxy->bind_proc) & pid_bit))
William Lallemand933efcd2016-11-22 12:34:16 +01002040 continue;
2041
2042 chunk_appendf(&trash, "%s\n", curproxy->id);
Willy Tarreau06d80a92017-10-19 14:32:15 +02002043 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01002044 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01002045 return 0;
2046 }
2047 }
2048
2049 return 1;
2050}
William Lallemanda6c5f332016-11-19 02:25:36 +01002051
Willy Tarreaua275a372018-08-21 14:50:44 +02002052/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
2053 *
2054 * Grabs the proxy lock and each server's lock.
2055 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002056static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01002057{
2058 struct proxy *px;
2059 struct server *s;
2060
2061 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2062 return 1;
2063
2064 px = cli_find_backend(appctx, args[3]);
2065 if (!px)
2066 return 1;
2067
Willy Tarreau5e83d992019-07-30 11:59:34 +02002068 /* Note: this lock is to make sure this doesn't change while another
2069 * thread is in srv_set_dyncookie().
2070 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002071 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002072 px->ck_opts |= PR_CK_DYNAMIC;
Willy Tarreau5e83d992019-07-30 11:59:34 +02002073 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002074
Willy Tarreaua275a372018-08-21 14:50:44 +02002075 for (s = px->srv; s != NULL; s = s->next) {
2076 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002077 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02002078 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
2079 }
2080
Olivier Houchard614f8d72017-03-14 20:08:46 +01002081 return 1;
2082}
2083
Willy Tarreaua275a372018-08-21 14:50:44 +02002084/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
2085 *
2086 * Grabs the proxy lock and each server's lock.
2087 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002088static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01002089{
2090 struct proxy *px;
2091 struct server *s;
2092
2093 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2094 return 1;
2095
2096 px = cli_find_backend(appctx, args[3]);
2097 if (!px)
2098 return 1;
2099
Willy Tarreau5e83d992019-07-30 11:59:34 +02002100 /* Note: this lock is to make sure this doesn't change while another
2101 * thread is in srv_set_dyncookie().
2102 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002103 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002104 px->ck_opts &= ~PR_CK_DYNAMIC;
Willy Tarreau5e83d992019-07-30 11:59:34 +02002105 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002106
2107 for (s = px->srv; s != NULL; s = s->next) {
Willy Tarreaua275a372018-08-21 14:50:44 +02002108 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002109 if (!(s->flags & SRV_F_COOKIESET)) {
2110 free(s->cookie);
2111 s->cookie = NULL;
2112 }
Willy Tarreaua275a372018-08-21 14:50:44 +02002113 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002114 }
2115
2116 return 1;
2117}
2118
Willy Tarreaua275a372018-08-21 14:50:44 +02002119/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
2120 *
2121 * Grabs the proxy lock and each server's lock.
2122 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002123static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01002124{
2125 struct proxy *px;
2126 struct server *s;
2127 char *newkey;
2128
2129 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2130 return 1;
2131
2132 px = cli_find_backend(appctx, args[3]);
2133 if (!px)
2134 return 1;
2135
Willy Tarreau9d008692019-08-09 11:21:01 +02002136 if (!*args[4])
2137 return cli_err(appctx, "String value expected.\n");
Olivier Houchard614f8d72017-03-14 20:08:46 +01002138
2139 newkey = strdup(args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02002140 if (!newkey)
2141 return cli_err(appctx, "Failed to allocate memory.\n");
Willy Tarreaua275a372018-08-21 14:50:44 +02002142
Willy Tarreau5e83d992019-07-30 11:59:34 +02002143 /* Note: this lock is to make sure this doesn't change while another
2144 * thread is in srv_set_dyncookie().
2145 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002146 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002147 free(px->dyncookie_key);
2148 px->dyncookie_key = newkey;
Willy Tarreau5e83d992019-07-30 11:59:34 +02002149 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002150
Willy Tarreaua275a372018-08-21 14:50:44 +02002151 for (s = px->srv; s != NULL; s = s->next) {
2152 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002153 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02002154 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
2155 }
2156
Olivier Houchard614f8d72017-03-14 20:08:46 +01002157 return 1;
2158}
2159
Willy Tarreaua275a372018-08-21 14:50:44 +02002160/* Parses the "set maxconn frontend" directive, it always returns 1.
2161 *
2162 * Grabs the proxy lock.
2163 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002164static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002165{
2166 struct proxy *px;
2167 struct listener *l;
2168 int v;
2169
2170 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2171 return 1;
2172
2173 px = cli_find_frontend(appctx, args[3]);
2174 if (!px)
2175 return 1;
2176
Willy Tarreau9d008692019-08-09 11:21:01 +02002177 if (!*args[4])
2178 return cli_err(appctx, "Integer value expected.\n");
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002179
2180 v = atoi(args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02002181 if (v < 0)
2182 return cli_err(appctx, "Value out of range.\n");
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002183
2184 /* OK, the value is fine, so we assign it to the proxy and to all of
2185 * its listeners. The blocked ones will be dequeued.
2186 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002187 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2188
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002189 px->maxconn = v;
2190 list_for_each_entry(l, &px->conf.listeners, by_fe) {
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002191 if (l->state == LI_FULL)
2192 resume_listener(l);
2193 }
2194
Willy Tarreau241797a2019-12-10 14:10:52 +01002195 if (px->maxconn > px->feconn)
2196 dequeue_proxy_listeners(px);
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002197
Willy Tarreaua275a372018-08-21 14:50:44 +02002198 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2199
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002200 return 1;
2201}
2202
Willy Tarreaua275a372018-08-21 14:50:44 +02002203/* Parses the "shutdown frontend" directive, it always returns 1.
2204 *
2205 * Grabs the proxy lock.
2206 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002207static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002208{
2209 struct proxy *px;
2210
2211 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2212 return 1;
2213
2214 px = cli_find_frontend(appctx, args[2]);
2215 if (!px)
2216 return 1;
2217
Willy Tarreau9d008692019-08-09 11:21:01 +02002218 if (px->state == PR_STSTOPPED)
2219 return cli_msg(appctx, LOG_NOTICE, "Frontend was already shut down.\n");
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002220
William Dauchy1e2256d2020-01-25 23:45:18 +01002221 ha_warning("Proxy %s stopped (cumulated conns: FE: %lld, BE: %lld).\n",
Christopher Faulet767a84b2017-11-24 16:50:31 +01002222 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
William Dauchy1e2256d2020-01-25 23:45:18 +01002223 send_log(px, LOG_WARNING, "Proxy %s stopped (cumulated conns: FE: %lld, BE: %lld).\n",
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002224 px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
Willy Tarreaua275a372018-08-21 14:50:44 +02002225
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002226 stop_proxy(px);
2227 return 1;
2228}
2229
Willy Tarreaua275a372018-08-21 14:50:44 +02002230/* Parses the "disable frontend" directive, it always returns 1.
2231 *
2232 * Grabs the proxy lock.
2233 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002234static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002235{
2236 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002237 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002238
2239 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2240 return 1;
2241
2242 px = cli_find_frontend(appctx, args[2]);
2243 if (!px)
2244 return 1;
2245
Willy Tarreau9d008692019-08-09 11:21:01 +02002246 if (px->state == PR_STSTOPPED)
2247 return cli_msg(appctx, LOG_NOTICE, "Frontend was previously shut down, cannot disable.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002248
Willy Tarreau9d008692019-08-09 11:21:01 +02002249 if (px->state == PR_STPAUSED)
2250 return cli_msg(appctx, LOG_NOTICE, "Frontend is already disabled.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002251
Willy Tarreaua275a372018-08-21 14:50:44 +02002252 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2253 ret = pause_proxy(px);
2254 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2255
Willy Tarreau9d008692019-08-09 11:21:01 +02002256 if (!ret)
2257 return cli_err(appctx, "Failed to pause frontend, check logs for precise cause.\n");
2258
Willy Tarreau15b9e682016-11-24 11:55:28 +01002259 return 1;
2260}
2261
Willy Tarreaua275a372018-08-21 14:50:44 +02002262/* Parses the "enable frontend" directive, it always returns 1.
2263 *
2264 * Grabs the proxy lock.
2265 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002266static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002267{
2268 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002269 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002270
2271 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2272 return 1;
2273
2274 px = cli_find_frontend(appctx, args[2]);
2275 if (!px)
2276 return 1;
2277
Willy Tarreau9d008692019-08-09 11:21:01 +02002278 if (px->state == PR_STSTOPPED)
2279 return cli_err(appctx, "Frontend was previously shut down, cannot enable.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002280
Willy Tarreau9d008692019-08-09 11:21:01 +02002281 if (px->state != PR_STPAUSED)
2282 return cli_msg(appctx, LOG_NOTICE, "Frontend is already enabled.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002283
Willy Tarreaua275a372018-08-21 14:50:44 +02002284 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2285 ret = resume_proxy(px);
2286 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2287
Willy Tarreau9d008692019-08-09 11:21:01 +02002288 if (!ret)
2289 return cli_err(appctx, "Failed to resume frontend, check logs for precise cause (port conflict?).\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002290 return 1;
2291}
2292
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002293/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
2294 * now.
2295 */
2296static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
2297{
2298 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2299 return 1;
2300
2301 if (*args[2]) {
2302 struct proxy *px;
2303
2304 px = proxy_find_by_name(args[2], 0, 0);
2305 if (px)
2306 appctx->ctx.errors.iid = px->uuid;
2307 else
2308 appctx->ctx.errors.iid = atoi(args[2]);
2309
Willy Tarreau9d008692019-08-09 11:21:01 +02002310 if (!appctx->ctx.errors.iid)
2311 return cli_err(appctx, "No such proxy.\n");
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002312 }
2313 else
2314 appctx->ctx.errors.iid = -1; // dump all proxies
2315
2316 appctx->ctx.errors.flag = 0;
2317 if (strcmp(args[3], "request") == 0)
2318 appctx->ctx.errors.flag |= 4; // ignore response
2319 else if (strcmp(args[3], "response") == 0)
2320 appctx->ctx.errors.flag |= 2; // ignore request
2321 appctx->ctx.errors.px = NULL;
2322 return 0;
2323}
2324
2325/* This function dumps all captured errors onto the stream interface's
2326 * read buffer. It returns 0 if the output buffer is full and it needs
2327 * to be called again, otherwise non-zero.
2328 */
2329static int cli_io_handler_show_errors(struct appctx *appctx)
2330{
2331 struct stream_interface *si = appctx->owner;
2332 extern const char *monthname[12];
2333
2334 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
2335 return 1;
2336
2337 chunk_reset(&trash);
2338
2339 if (!appctx->ctx.errors.px) {
2340 /* the function had not been called yet, let's prepare the
2341 * buffer for a response.
2342 */
2343 struct tm tm;
2344
2345 get_localtime(date.tv_sec, &tm);
2346 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
2347 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2348 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
2349 error_snapshot_id);
2350
Willy Tarreau36b27362018-09-07 19:55:44 +02002351 if (ci_putchk(si_ic(si), &trash) == -1)
2352 goto cant_send;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002353
2354 appctx->ctx.errors.px = proxies_list;
2355 appctx->ctx.errors.bol = 0;
2356 appctx->ctx.errors.ptr = -1;
2357 }
2358
2359 /* we have two inner loops here, one for the proxy, the other one for
2360 * the buffer.
2361 */
2362 while (appctx->ctx.errors.px) {
2363 struct error_snapshot *es;
2364
Willy Tarreau36b27362018-09-07 19:55:44 +02002365 HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2366
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002367 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002368 es = appctx->ctx.errors.px->invalid_req;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002369 if (appctx->ctx.errors.flag & 2) // skip req
2370 goto next;
2371 }
2372 else {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002373 es = appctx->ctx.errors.px->invalid_rep;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002374 if (appctx->ctx.errors.flag & 4) // skip resp
2375 goto next;
2376 }
2377
Willy Tarreauc55015e2018-09-07 19:02:32 +02002378 if (!es)
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002379 goto next;
2380
2381 if (appctx->ctx.errors.iid >= 0 &&
2382 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
Olivier Houchardbdb00c52020-03-12 15:30:17 +01002383 (!es->oe || es->oe->uuid != appctx->ctx.errors.iid))
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002384 goto next;
2385
2386 if (appctx->ctx.errors.ptr < 0) {
2387 /* just print headers now */
2388
2389 char pn[INET6_ADDRSTRLEN];
2390 struct tm tm;
2391 int port;
2392
2393 get_localtime(es->when.tv_sec, &tm);
2394 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
2395 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2396 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
2397
2398 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
2399 case AF_INET:
2400 case AF_INET6:
2401 port = get_host_port(&es->src);
2402 break;
2403 default:
2404 port = 0;
2405 }
2406
2407 switch (appctx->ctx.errors.flag & 1) {
2408 case 0:
2409 chunk_appendf(&trash,
2410 " frontend %s (#%d): invalid request\n"
2411 " backend %s (#%d)",
2412 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
Olivier Houchardbdb00c52020-03-12 15:30:17 +01002413 (es->oe && es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
2414 (es->oe && es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002415 break;
2416 case 1:
2417 chunk_appendf(&trash,
2418 " backend %s (#%d): invalid response\n"
2419 " frontend %s (#%d)",
2420 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
Olivier Houchardbdb00c52020-03-12 15:30:17 +01002421 es->oe ? es->oe->id : "<NONE>" , es->oe ? es->oe->uuid : -1);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002422 break;
2423 }
2424
2425 chunk_appendf(&trash,
2426 ", server %s (#%d), event #%u, src %s:%d\n"
2427 " buffer starts at %llu (including %u out), %u free,\n"
2428 " len %u, wraps at %u, error at position %u\n",
2429 es->srv ? es->srv->id : "<NONE>",
2430 es->srv ? es->srv->puid : -1,
2431 es->ev_id, pn, port,
2432 es->buf_ofs, es->buf_out,
2433 global.tune.bufsize - es->buf_out - es->buf_len,
2434 es->buf_len, es->buf_wrap, es->buf_err);
2435
2436 if (es->show)
2437 es->show(&trash, es);
2438
2439 chunk_appendf(&trash, " \n");
2440
Willy Tarreau36b27362018-09-07 19:55:44 +02002441 if (ci_putchk(si_ic(si), &trash) == -1)
2442 goto cant_send_unlock;
2443
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002444 appctx->ctx.errors.ptr = 0;
2445 appctx->ctx.errors.ev_id = es->ev_id;
2446 }
2447
2448 if (appctx->ctx.errors.ev_id != es->ev_id) {
2449 /* the snapshot changed while we were dumping it */
2450 chunk_appendf(&trash,
2451 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau36b27362018-09-07 19:55:44 +02002452 if (ci_putchk(si_ic(si), &trash) == -1)
2453 goto cant_send_unlock;
2454
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002455 goto next;
2456 }
2457
2458 /* OK, ptr >= 0, so we have to dump the current line */
Willy Tarreau4bc7d902018-09-07 20:07:17 +02002459 while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002460 int newptr;
2461 int newline;
2462
2463 newline = appctx->ctx.errors.bol;
2464 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
2465 if (newptr == appctx->ctx.errors.ptr)
Willy Tarreau36b27362018-09-07 19:55:44 +02002466 goto cant_send_unlock;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002467
Willy Tarreau36b27362018-09-07 19:55:44 +02002468 if (ci_putchk(si_ic(si), &trash) == -1)
2469 goto cant_send_unlock;
2470
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002471 appctx->ctx.errors.ptr = newptr;
2472 appctx->ctx.errors.bol = newline;
2473 };
2474 next:
Willy Tarreau36b27362018-09-07 19:55:44 +02002475 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002476 appctx->ctx.errors.bol = 0;
2477 appctx->ctx.errors.ptr = -1;
2478 appctx->ctx.errors.flag ^= 1;
2479 if (!(appctx->ctx.errors.flag & 1))
2480 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
2481 }
2482
2483 /* dump complete */
2484 return 1;
Willy Tarreau36b27362018-09-07 19:55:44 +02002485
2486 cant_send_unlock:
2487 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2488 cant_send:
Willy Tarreaudb398432018-11-15 11:08:52 +01002489 si_rx_room_blk(si);
Willy Tarreau36b27362018-09-07 19:55:44 +02002490 return 0;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002491}
2492
William Lallemanda6c5f332016-11-19 02:25:36 +01002493/* register cli keywords */
2494static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau15b9e682016-11-24 11:55:28 +01002495 { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
2496 { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002497 { { "set", "maxconn", "frontend", NULL }, "set maxconn frontend : change a frontend's maxconn setting", cli_parse_set_maxconn_frontend, NULL },
Willy Tarreau69f591e2020-07-01 07:00:59 +02002498 { { "show","servers", "conn", NULL }, "show servers conn [id]: dump server connections status (for backend <id>)", cli_parse_show_servers, cli_io_handler_servers_state },
William Lallemanda6c5f332016-11-19 02:25:36 +01002499 { { "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 +01002500 { { "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 +01002501 { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
Olivier Houchard614f8d72017-03-14 20:08:46 +01002502 { { "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 },
2503 { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
2504 { { "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 +02002505 { { "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 +01002506 {{},}
2507}};
2508
Willy Tarreau0108d902018-11-25 19:14:37 +01002509INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002510
2511/*
2512 * Local variables:
2513 * c-indent-level: 8
2514 * c-basic-offset: 8
2515 * End:
2516 */