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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 Tarreau626f3a72020-10-07 16:52:43 +020038#include <haproxy/protocol.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020039#include <haproxy/proto_tcp.h>
Willy Tarreaua264d962020-06-04 22:29:18 +020040#include <haproxy/proxy.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +020041#include <haproxy/server-t.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020042#include <haproxy/signal.h>
Willy Tarreau2eec9b52020-06-04 19:58:55 +020043#include <haproxy/stats-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +020044#include <haproxy/stream.h>
Willy Tarreau5e539c92020-06-04 20:45:39 +020045#include <haproxy/stream_interface.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +020046#include <haproxy/task.h>
Willy Tarreau92b4f132020-06-01 11:05:15 +020047#include <haproxy/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020048
Willy Tarreaubaaee002006-06-26 02:48:02 +020049
Willy Tarreau918ff602011-07-25 16:33:49 +020050int listeners; /* # of proxy listeners, set by cfgparse */
Olivier Houchardfbc74e82017-11-24 16:54:05 +010051struct proxy *proxies_list = NULL; /* list of all existing proxies */
Willy Tarreau53fb4ae2009-10-04 23:04:08 +020052struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
Willy Tarreauf79d9502014-03-15 07:22:35 +010053struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */
Willy Tarreau10479e42010-12-12 14:00:34 +010054unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
Willy Tarreaubaaee002006-06-26 02:48:02 +020055
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010056/* proxy->options */
57const struct cfg_opt cfg_opts[] =
58{
59 { "abortonclose", PR_O_ABRT_CLOSE, PR_CAP_BE, 0, 0 },
60 { "allbackups", PR_O_USE_ALL_BK, PR_CAP_BE, 0, 0 },
61 { "checkcache", PR_O_CHK_CACHE, PR_CAP_BE, 0, PR_MODE_HTTP },
62 { "clitcpka", PR_O_TCP_CLI_KA, PR_CAP_FE, 0, 0 },
63 { "contstats", PR_O_CONTSTATS, PR_CAP_FE, 0, 0 },
64 { "dontlognull", PR_O_NULLNOLOG, PR_CAP_FE, 0, 0 },
65 { "http_proxy", PR_O_HTTP_PROXY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
66 { "http-buffer-request", PR_O_WREQ_BODY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
67 { "http-ignore-probes", PR_O_IGNORE_PRB, PR_CAP_FE, 0, PR_MODE_HTTP },
68 { "prefer-last-server", PR_O_PREF_LAST, PR_CAP_BE, 0, PR_MODE_HTTP },
69 { "logasap", PR_O_LOGASAP, PR_CAP_FE, 0, 0 },
70 { "nolinger", PR_O_TCP_NOLING, PR_CAP_FE | PR_CAP_BE, 0, 0 },
71 { "persist", PR_O_PERSIST, PR_CAP_BE, 0, 0 },
72 { "srvtcpka", PR_O_TCP_SRV_KA, PR_CAP_BE, 0, 0 },
Willy Tarreaue5733232019-05-22 19:24:06 +020073#ifdef USE_TPROXY
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010074 { "transparent", PR_O_TRANSP, PR_CAP_BE, 0, 0 },
75#else
76 { "transparent", 0, 0, 0, 0 },
77#endif
78
79 { NULL, 0, 0, 0, 0 }
80};
81
82/* proxy->options2 */
83const struct cfg_opt cfg_opts2[] =
84{
Willy Tarreaue5733232019-05-22 19:24:06 +020085#ifdef USE_LINUX_SPLICE
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +010086 { "splice-request", PR_O2_SPLIC_REQ, PR_CAP_FE|PR_CAP_BE, 0, 0 },
87 { "splice-response", PR_O2_SPLIC_RTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
88 { "splice-auto", PR_O2_SPLIC_AUT, PR_CAP_FE|PR_CAP_BE, 0, 0 },
89#else
90 { "splice-request", 0, 0, 0, 0 },
91 { "splice-response", 0, 0, 0, 0 },
92 { "splice-auto", 0, 0, 0, 0 },
93#endif
94 { "accept-invalid-http-request", PR_O2_REQBUG_OK, PR_CAP_FE, 0, PR_MODE_HTTP },
95 { "accept-invalid-http-response", PR_O2_RSPBUG_OK, PR_CAP_BE, 0, PR_MODE_HTTP },
96 { "dontlog-normal", PR_O2_NOLOGNORM, PR_CAP_FE, 0, 0 },
97 { "log-separate-errors", PR_O2_LOGERRORS, PR_CAP_FE, 0, 0 },
98 { "log-health-checks", PR_O2_LOGHCHKS, PR_CAP_BE, 0, 0 },
99 { "socket-stats", PR_O2_SOCKSTAT, PR_CAP_FE, 0, 0 },
100 { "tcp-smart-accept", PR_O2_SMARTACC, PR_CAP_FE, 0, 0 },
101 { "tcp-smart-connect", PR_O2_SMARTCON, PR_CAP_BE, 0, 0 },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100102 { "independent-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
103 { "http-use-proxy-header", PR_O2_USE_PXHDR, PR_CAP_FE, 0, PR_MODE_HTTP },
104 { "http-pretend-keepalive", PR_O2_FAKE_KA, PR_CAP_BE, 0, PR_MODE_HTTP },
105 { "http-no-delay", PR_O2_NODELAY, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Faulet31930372019-07-15 10:16:58 +0200106 { "http-use-htx", 0, PR_CAP_FE|PR_CAP_BE, 0, 0 }, // deprecated
Christopher Faulet98fbe952019-07-22 16:18:24 +0200107
108 {"h1-case-adjust-bogus-client", PR_O2_H1_ADJ_BUGCLI, PR_CAP_FE, 0, PR_MODE_HTTP },
109 {"h1-case-adjust-bogus-server", PR_O2_H1_ADJ_BUGSRV, PR_CAP_BE, 0, PR_MODE_HTTP },
Christopher Faulet89aed322020-06-02 17:33:56 +0200110 {"disable-h2-upgrade", PR_O2_NO_H2_UPGRADE, PR_CAP_FE, 0, PR_MODE_HTTP },
Willy Tarreau3a1f5fd2018-11-11 15:40:36 +0100111 { NULL, 0, 0, 0 }
112};
113
Willy Tarreau977b8e42006-12-29 14:19:17 +0100114/*
Willy Tarreau816eb542007-11-04 07:04:43 +0100115 * This function returns a string containing a name describing capabilities to
116 * report comprehensible error messages. Specifically, it will return the words
Christopher Faulet898566e2016-10-26 11:06:28 +0200117 * "frontend", "backend" when appropriate, or "proxy" for all other
Willy Tarreau816eb542007-11-04 07:04:43 +0100118 * cases including the proxies declared in "listen" mode.
Willy Tarreau977b8e42006-12-29 14:19:17 +0100119 */
Willy Tarreau816eb542007-11-04 07:04:43 +0100120const char *proxy_cap_str(int cap)
Willy Tarreau977b8e42006-12-29 14:19:17 +0100121{
Willy Tarreau816eb542007-11-04 07:04:43 +0100122 if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
123 if (cap & PR_CAP_FE)
124 return "frontend";
125 else if (cap & PR_CAP_BE)
126 return "backend";
Willy Tarreau816eb542007-11-04 07:04:43 +0100127 }
128 return "proxy";
Willy Tarreau977b8e42006-12-29 14:19:17 +0100129}
130
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100131/*
132 * This function returns a string containing the mode of the proxy in a format
133 * suitable for error messages.
134 */
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100135const char *proxy_mode_str(int mode) {
136
137 if (mode == PR_MODE_TCP)
138 return "tcp";
139 else if (mode == PR_MODE_HTTP)
140 return "http";
William Lallemandcf62f7e2018-10-26 14:47:40 +0200141 else if (mode == PR_MODE_CLI)
142 return "cli";
Krzysztof Piotr Oledzki6eb730d2007-11-03 23:41:58 +0100143 else
144 return "unknown";
145}
146
Willy Tarreauf3950172009-10-10 18:35:51 +0200147/*
148 * This function scans the list of backends and servers to retrieve the first
149 * backend and the first server with the given names, and sets them in both
150 * parameters. It returns zero if either is not found, or non-zero and sets
151 * the ones it did not found to NULL. If a NULL pointer is passed for the
152 * backend, only the pointer to the server will be updated.
153 */
154int get_backend_server(const char *bk_name, const char *sv_name,
155 struct proxy **bk, struct server **sv)
156{
157 struct proxy *p;
158 struct server *s;
Willy Tarreau7ecc4202014-03-15 07:57:11 +0100159 int sid;
Willy Tarreauf3950172009-10-10 18:35:51 +0200160
161 *sv = NULL;
162
Willy Tarreau050536d2012-10-04 08:47:34 +0200163 sid = -1;
Willy Tarreaucfeaa472009-10-10 22:33:08 +0200164 if (*sv_name == '#')
165 sid = atoi(sv_name + 1);
166
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200167 p = proxy_be_by_name(bk_name);
Willy Tarreauf3950172009-10-10 18:35:51 +0200168 if (bk)
169 *bk = p;
170 if (!p)
171 return 0;
172
173 for (s = p->srv; s; s = s->next)
Willy Tarreau4055a102012-11-15 00:15:18 +0100174 if ((sid >= 0 && s->puid == sid) ||
175 (sid < 0 && strcmp(s->id, sv_name) == 0))
Willy Tarreauf3950172009-10-10 18:35:51 +0200176 break;
177 *sv = s;
178 if (!s)
179 return 0;
180 return 1;
181}
182
Willy Tarreaue219db72007-12-03 01:30:13 +0100183/* This function parses a "timeout" statement in a proxy section. It returns
184 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200185 * return zero, it will write an error or warning message into a preallocated
186 * buffer returned at <err>. The trailing is not be written. The function must
187 * be called with <args> pointing to the first command line word, with <proxy>
188 * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
189 * As a special case for compatibility with older configs, it also accepts
190 * "{cli|srv|con}timeout" in args[0].
Willy Tarreaue219db72007-12-03 01:30:13 +0100191 */
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200192static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200193 struct proxy *defpx, const char *file, int line,
194 char **err)
Willy Tarreaue219db72007-12-03 01:30:13 +0100195{
196 unsigned timeout;
197 int retval, cap;
198 const char *res, *name;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200199 int *tv = NULL;
200 int *td = NULL;
Willy Tarreaue219db72007-12-03 01:30:13 +0100201
202 retval = 0;
Willy Tarreau9de1bbd2008-07-09 20:34:27 +0200203
204 /* simply skip "timeout" but remain compatible with old form */
205 if (strcmp(args[0], "timeout") == 0)
206 args++;
207
Willy Tarreaue219db72007-12-03 01:30:13 +0100208 name = args[0];
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200209 if (!strcmp(args[0], "client")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100210 name = "client";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100211 tv = &proxy->timeout.client;
212 td = &defpx->timeout.client;
Willy Tarreaue219db72007-12-03 01:30:13 +0100213 cap = PR_CAP_FE;
214 } else if (!strcmp(args[0], "tarpit")) {
215 tv = &proxy->timeout.tarpit;
216 td = &defpx->timeout.tarpit;
Willy Tarreau51c9bde2008-01-06 13:40:03 +0100217 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100218 } else if (!strcmp(args[0], "http-keep-alive")) {
219 tv = &proxy->timeout.httpka;
220 td = &defpx->timeout.httpka;
221 cap = PR_CAP_FE | PR_CAP_BE;
Willy Tarreau036fae02008-01-06 13:24:40 +0100222 } else if (!strcmp(args[0], "http-request")) {
223 tv = &proxy->timeout.httpreq;
224 td = &defpx->timeout.httpreq;
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200225 cap = PR_CAP_FE | PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200226 } else if (!strcmp(args[0], "server")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100227 name = "server";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100228 tv = &proxy->timeout.server;
229 td = &defpx->timeout.server;
Willy Tarreaue219db72007-12-03 01:30:13 +0100230 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200231 } else if (!strcmp(args[0], "connect")) {
Willy Tarreaue219db72007-12-03 01:30:13 +0100232 name = "connect";
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100233 tv = &proxy->timeout.connect;
234 td = &defpx->timeout.connect;
Willy Tarreaue219db72007-12-03 01:30:13 +0100235 cap = PR_CAP_BE;
Krzysztof Piotr Oledzki5259dfe2008-01-21 01:54:06 +0100236 } else if (!strcmp(args[0], "check")) {
237 tv = &proxy->timeout.check;
238 td = &defpx->timeout.check;
239 cap = PR_CAP_BE;
Willy Tarreaue219db72007-12-03 01:30:13 +0100240 } else if (!strcmp(args[0], "queue")) {
241 tv = &proxy->timeout.queue;
242 td = &defpx->timeout.queue;
243 cap = PR_CAP_BE;
Willy Tarreauce887fd2012-05-12 12:50:00 +0200244 } else if (!strcmp(args[0], "tunnel")) {
245 tv = &proxy->timeout.tunnel;
246 td = &defpx->timeout.tunnel;
247 cap = PR_CAP_BE;
Willy Tarreau05cdd962014-05-10 14:30:07 +0200248 } else if (!strcmp(args[0], "client-fin")) {
249 tv = &proxy->timeout.clientfin;
250 td = &defpx->timeout.clientfin;
251 cap = PR_CAP_FE;
252 } else if (!strcmp(args[0], "server-fin")) {
253 tv = &proxy->timeout.serverfin;
254 td = &defpx->timeout.serverfin;
255 cap = PR_CAP_BE;
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +0200256 } else if (!strcmp(args[0], "clitimeout")) {
257 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout client'.", args[0]);
258 return -1;
259 } else if (!strcmp(args[0], "srvtimeout")) {
260 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout server'.", args[0]);
261 return -1;
262 } else if (!strcmp(args[0], "contimeout")) {
263 memprintf(err, "the '%s' directive is not supported anymore since HAProxy 2.1. Use 'timeout connect'.", args[0]);
264 return -1;
Willy Tarreaue219db72007-12-03 01:30:13 +0100265 } else {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200266 memprintf(err,
267 "'timeout' supports 'client', 'server', 'connect', 'check', "
Willy Tarreau05cdd962014-05-10 14:30:07 +0200268 "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', "
269 "'client-fin' and 'server-fin' (got '%s')",
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200270 args[0]);
Willy Tarreaue219db72007-12-03 01:30:13 +0100271 return -1;
272 }
273
274 if (*args[1] == 0) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200275 memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100276 return -1;
277 }
278
279 res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +0200280 if (res == PARSE_TIME_OVER) {
281 memprintf(err, "timer overflow in argument '%s' to 'timeout %s' (maximum value is 2147483647 ms or ~24.8 days)",
282 args[1], name);
283 return -1;
284 }
285 else if (res == PARSE_TIME_UNDER) {
286 memprintf(err, "timer underflow in argument '%s' to 'timeout %s' (minimum non-null value is 1 ms)",
287 args[1], name);
288 return -1;
289 }
290 else if (res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200291 memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100292 return -1;
293 }
294
295 if (!(proxy->cap & cap)) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200296 memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
297 name, proxy_type_str(proxy), proxy->id,
298 (cap & PR_CAP_BE) ? "backend" : "frontend");
Willy Tarreaue219db72007-12-03 01:30:13 +0100299 retval = 1;
300 }
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200301 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200302 memprintf(err, "overwriting 'timeout %s' which was already specified", name);
Willy Tarreaue219db72007-12-03 01:30:13 +0100303 retval = 1;
304 }
305
Willy Tarreaufac5b592014-05-22 08:24:46 +0200306 if (*args[2] != 0) {
307 memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]);
308 retval = -1;
309 }
310
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200311 *tv = MS_TO_TICKS(timeout);
Willy Tarreaue219db72007-12-03 01:30:13 +0100312 return retval;
313}
314
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100315/* This function parses a "rate-limit" statement in a proxy section. It returns
316 * -1 if there is any error, 1 for a warning, otherwise zero. If it does not
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200317 * return zero, it will write an error or warning message into a preallocated
318 * buffer returned at <err>. The function must be called with <args> pointing
319 * to the first command line word, with <proxy> pointing to the proxy being
320 * parsed, and <defpx> to the default proxy or NULL.
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100321 */
322static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
Willy Tarreau28a47d62012-09-18 20:02:48 +0200323 struct proxy *defpx, const char *file, int line,
324 char **err)
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100325{
William Dauchybb9da0b2020-01-16 01:34:27 +0100326 int retval;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200327 char *res;
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100328 unsigned int *tv = NULL;
329 unsigned int *td = NULL;
330 unsigned int val;
331
332 retval = 0;
333
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200334 if (strcmp(args[1], "sessions") == 0) {
Willy Tarreau13a34bd2009-05-10 18:52:49 +0200335 tv = &proxy->fe_sps_lim;
336 td = &defpx->fe_sps_lim;
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200337 }
338 else {
339 memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100340 return -1;
341 }
342
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200343 if (*args[2] == 0) {
344 memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100345 return -1;
346 }
347
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200348 val = strtoul(args[2], &res, 0);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100349 if (*res) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200350 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 +0100351 return -1;
352 }
353
William Dauchybb9da0b2020-01-16 01:34:27 +0100354 if (!(proxy->cap & PR_CAP_FE)) {
355 memprintf(err, "%s %s will be ignored because %s '%s' has no frontend capability",
356 args[0], args[1], proxy_type_str(proxy), proxy->id);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100357 retval = 1;
358 }
359 else if (defpx && *tv != *td) {
Willy Tarreau0a3dd742012-05-08 19:47:01 +0200360 memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
Willy Tarreau3a7d2072009-03-05 23:48:25 +0100361 retval = 1;
362 }
363
364 *tv = val;
365 return retval;
366}
367
Willy Tarreauc35362a2014-04-25 13:58:37 +0200368/* This function parses a "max-keep-alive-queue" statement in a proxy section.
369 * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it
370 * does not return zero, it will write an error or warning message into a
371 * preallocated buffer returned at <err>. The function must be called with
372 * <args> pointing to the first command line word, with <proxy> pointing to
373 * the proxy being parsed, and <defpx> to the default proxy or NULL.
374 */
375static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy,
376 struct proxy *defpx, const char *file, int line,
377 char **err)
378{
379 int retval;
380 char *res;
381 unsigned int val;
382
383 retval = 0;
384
385 if (*args[1] == 0) {
386 memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]);
387 return -1;
388 }
389
390 val = strtol(args[1], &res, 0);
391 if (*res) {
392 memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
393 return -1;
394 }
395
396 if (!(proxy->cap & PR_CAP_BE)) {
397 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
398 args[0], proxy_type_str(proxy), proxy->id);
399 retval = 1;
400 }
401
402 /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */
403 proxy->max_ka_queue = val + 1;
404 return retval;
405}
406
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200407/* This function parses a "declare" statement in a proxy section. It returns -1
408 * if there is any error, 1 for warning, otherwise 0. If it does not return zero,
409 * it will write an error or warning message into a preallocated buffer returned
410 * at <err>. The function must be called with <args> pointing to the first command
411 * line word, with <proxy> pointing to the proxy being parsed, and <defpx> to the
412 * default proxy or NULL.
413 */
414static int proxy_parse_declare(char **args, int section, struct proxy *curpx,
415 struct proxy *defpx, const char *file, int line,
416 char **err)
417{
418 /* Capture keyword wannot be declared in a default proxy. */
419 if (curpx == defpx) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800420 memprintf(err, "'%s' not available in default section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200421 return -1;
422 }
423
Joseph Herlant59dd2952018-11-15 11:46:55 -0800424 /* Capture keywork is only available in frontend. */
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200425 if (!(curpx->cap & PR_CAP_FE)) {
Joseph Herlant9edebb82018-11-15 11:50:44 -0800426 memprintf(err, "'%s' only available in frontend or listen section", args[0]);
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200427 return -1;
428 }
429
430 /* Check mandatory second keyword. */
431 if (!args[1] || !*args[1]) {
432 memprintf(err, "'%s' needs a second keyword that specify the type of declaration ('capture')", args[0]);
433 return -1;
434 }
435
Joseph Herlant59dd2952018-11-15 11:46:55 -0800436 /* Actually, declare is only available for declaring capture
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200437 * slot, but in the future it can declare maps or variables.
Joseph Herlant59dd2952018-11-15 11:46:55 -0800438 * So, this section permits to check and switch according with
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200439 * the second keyword.
440 */
441 if (strcmp(args[1], "capture") == 0) {
442 char *error = NULL;
443 long len;
444 struct cap_hdr *hdr;
445
446 /* Check the next keyword. */
447 if (!args[2] || !*args[2] ||
448 (strcmp(args[2], "response") != 0 &&
449 strcmp(args[2], "request") != 0)) {
450 memprintf(err, "'%s %s' requires a direction ('request' or 'response')", args[0], args[1]);
451 return -1;
452 }
453
454 /* Check the 'len' keyword. */
455 if (!args[3] || !*args[3] || strcmp(args[3], "len") != 0) {
456 memprintf(err, "'%s %s' requires a capture length ('len')", args[0], args[1]);
457 return -1;
458 }
459
460 /* Check the length value. */
461 if (!args[4] || !*args[4]) {
462 memprintf(err, "'%s %s': 'len' requires a numeric value that represents the "
463 "capture length",
464 args[0], args[1]);
465 return -1;
466 }
467
468 /* convert the length value. */
469 len = strtol(args[4], &error, 10);
470 if (*error != '\0') {
471 memprintf(err, "'%s %s': cannot parse the length '%s'.",
472 args[0], args[1], args[3]);
473 return -1;
474 }
475
476 /* check length. */
477 if (len <= 0) {
478 memprintf(err, "length must be > 0");
479 return -1;
480 }
481
482 /* register the capture. */
Vincent Bernat02779b62016-04-03 13:48:43 +0200483 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +0200484 hdr->name = NULL; /* not a header capture */
485 hdr->namelen = 0;
486 hdr->len = len;
487 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
488
489 if (strcmp(args[2], "request") == 0) {
490 hdr->next = curpx->req_cap;
491 hdr->index = curpx->nb_req_cap++;
492 curpx->req_cap = hdr;
493 }
494 if (strcmp(args[2], "response") == 0) {
495 hdr->next = curpx->rsp_cap;
496 hdr->index = curpx->nb_rsp_cap++;
497 curpx->rsp_cap = hdr;
498 }
499 return 0;
500 }
501 else {
502 memprintf(err, "unknown declaration type '%s' (supports 'capture')", args[1]);
503 return -1;
504 }
505}
506
Olivier Houcharda254a372019-04-05 15:30:12 +0200507/* This function parses a "retry-on" statement */
508static int
509proxy_parse_retry_on(char **args, int section, struct proxy *curpx,
510 struct proxy *defpx, const char *file, int line,
511 char **err)
512{
513 int i;
514
515 if (!(*args[1])) {
516 memprintf(err, "'%s' needs at least one keyword to specify when to retry", args[0]);
517 return -1;
518 }
519 if (!(curpx->cap & PR_CAP_BE)) {
520 memprintf(err, "'%s' only available in backend or listen section", args[0]);
521 return -1;
522 }
523 curpx->retry_type = 0;
524 for (i = 1; *(args[i]); i++) {
525 if (!strcmp(args[i], "conn-failure"))
526 curpx->retry_type |= PR_RE_CONN_FAILED;
527 else if (!strcmp(args[i], "empty-response"))
528 curpx->retry_type |= PR_RE_DISCONNECTED;
529 else if (!strcmp(args[i], "response-timeout"))
530 curpx->retry_type |= PR_RE_TIMEOUT;
531 else if (!strcmp(args[i], "404"))
532 curpx->retry_type |= PR_RE_404;
533 else if (!strcmp(args[i], "408"))
534 curpx->retry_type |= PR_RE_408;
535 else if (!strcmp(args[i], "425"))
536 curpx->retry_type |= PR_RE_425;
537 else if (!strcmp(args[i], "500"))
538 curpx->retry_type |= PR_RE_500;
539 else if (!strcmp(args[i], "501"))
540 curpx->retry_type |= PR_RE_501;
541 else if (!strcmp(args[i], "502"))
542 curpx->retry_type |= PR_RE_502;
543 else if (!strcmp(args[i], "503"))
544 curpx->retry_type |= PR_RE_503;
545 else if (!strcmp(args[i], "504"))
546 curpx->retry_type |= PR_RE_504;
Olivier Houchard865d8392019-05-03 22:46:27 +0200547 else if (!strcmp(args[i], "0rtt-rejected"))
548 curpx->retry_type |= PR_RE_EARLY_ERROR;
Olivier Houcharde3249a92019-05-03 23:01:47 +0200549 else if (!strcmp(args[i], "junk-response"))
550 curpx->retry_type |= PR_RE_JUNK_REQUEST;
Olivier Houchardddf0e032019-05-10 18:05:40 +0200551 else if (!(strcmp(args[i], "all-retryable-errors")))
552 curpx->retry_type |= PR_RE_CONN_FAILED | PR_RE_DISCONNECTED |
553 PR_RE_TIMEOUT | PR_RE_500 | PR_RE_502 |
554 PR_RE_503 | PR_RE_504 | PR_RE_EARLY_ERROR |
555 PR_RE_JUNK_REQUEST;
Olivier Houcharda254a372019-04-05 15:30:12 +0200556 else if (!strcmp(args[i], "none")) {
557 if (i != 1 || *args[i + 1]) {
558 memprintf(err, "'%s' 'none' keyworld only usable alone", args[0]);
559 return -1;
560 }
561 } else {
562 memprintf(err, "'%s': unknown keyword '%s'", args[0], args[i]);
563 return -1;
564 }
565
566 }
567
568
569 return 0;
570}
571
Willy Tarreau52543212020-07-09 05:58:51 +0200572#ifdef TCP_KEEPCNT
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900573/* This function parses "{cli|srv}tcpka-cnt" statements */
574static int proxy_parse_tcpka_cnt(char **args, int section, struct proxy *proxy,
575 struct proxy *defpx, const char *file, int line,
576 char **err)
577{
578 int retval;
579 char *res;
580 unsigned int tcpka_cnt;
581
582 retval = 0;
583
584 if (*args[1] == 0) {
585 memprintf(err, "'%s' expects an integer value", args[0]);
586 return -1;
587 }
588
589 tcpka_cnt = strtol(args[1], &res, 0);
590 if (*res) {
591 memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
592 return -1;
593 }
594
595 if (!strcmp(args[0], "clitcpka-cnt")) {
596 if (!(proxy->cap & PR_CAP_FE)) {
597 memprintf(err, "%s will be ignored because %s '%s' has no frontend capability",
598 args[0], proxy_type_str(proxy), proxy->id);
599 retval = 1;
600 }
601 proxy->clitcpka_cnt = tcpka_cnt;
602 } else if (!strcmp(args[0], "srvtcpka-cnt")) {
603 if (!(proxy->cap & PR_CAP_BE)) {
604 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
605 args[0], proxy_type_str(proxy), proxy->id);
606 retval = 1;
607 }
608 proxy->srvtcpka_cnt = tcpka_cnt;
609 } else {
610 /* unreachable */
611 memprintf(err, "'%s': unknown keyword", args[0]);
612 return -1;
613 }
614
615 return retval;
616}
Willy Tarreau52543212020-07-09 05:58:51 +0200617#endif
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900618
Willy Tarreau52543212020-07-09 05:58:51 +0200619#ifdef TCP_KEEPIDLE
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900620/* This function parses "{cli|srv}tcpka-idle" statements */
621static int proxy_parse_tcpka_idle(char **args, int section, struct proxy *proxy,
622 struct proxy *defpx, const char *file, int line,
623 char **err)
624{
625 int retval;
626 const char *res;
627 unsigned int tcpka_idle;
628
629 retval = 0;
630
631 if (*args[1] == 0) {
632 memprintf(err, "'%s' expects an integer value", args[0]);
633 return -1;
634 }
635 res = parse_time_err(args[1], &tcpka_idle, TIME_UNIT_S);
636 if (res == PARSE_TIME_OVER) {
637 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
638 args[1], args[0]);
639 return -1;
640 }
641 else if (res == PARSE_TIME_UNDER) {
642 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
643 args[1], args[0]);
644 return -1;
645 }
646 else if (res) {
647 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
648 return -1;
649 }
650
651 if (!strcmp(args[0], "clitcpka-idle")) {
652 if (!(proxy->cap & PR_CAP_FE)) {
653 memprintf(err, "%s will be ignored because %s '%s' has no frontend capability",
654 args[0], proxy_type_str(proxy), proxy->id);
655 retval = 1;
656 }
657 proxy->clitcpka_idle = tcpka_idle;
658 } else if (!strcmp(args[0], "srvtcpka-idle")) {
659 if (!(proxy->cap & PR_CAP_BE)) {
660 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
661 args[0], proxy_type_str(proxy), proxy->id);
662 retval = 1;
663 }
664 proxy->srvtcpka_idle = tcpka_idle;
665 } else {
666 /* unreachable */
667 memprintf(err, "'%s': unknown keyword", args[0]);
668 return -1;
669 }
670
671 return retval;
672}
Willy Tarreau52543212020-07-09 05:58:51 +0200673#endif
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900674
Willy Tarreau52543212020-07-09 05:58:51 +0200675#ifdef TCP_KEEPINTVL
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900676/* This function parses "{cli|srv}tcpka-intvl" statements */
677static int proxy_parse_tcpka_intvl(char **args, int section, struct proxy *proxy,
678 struct proxy *defpx, const char *file, int line,
679 char **err)
680{
681 int retval;
682 const char *res;
683 unsigned int tcpka_intvl;
684
685 retval = 0;
686
687 if (*args[1] == 0) {
688 memprintf(err, "'%s' expects an integer value", args[0]);
689 return -1;
690 }
691 res = parse_time_err(args[1], &tcpka_intvl, TIME_UNIT_S);
692 if (res == PARSE_TIME_OVER) {
693 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
694 args[1], args[0]);
695 return -1;
696 }
697 else if (res == PARSE_TIME_UNDER) {
698 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
699 args[1], args[0]);
700 return -1;
701 }
702 else if (res) {
703 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
704 return -1;
705 }
706
707 if (!strcmp(args[0], "clitcpka-intvl")) {
708 if (!(proxy->cap & PR_CAP_FE)) {
709 memprintf(err, "%s will be ignored because %s '%s' has no frontend capability",
710 args[0], proxy_type_str(proxy), proxy->id);
711 retval = 1;
712 }
713 proxy->clitcpka_intvl = tcpka_intvl;
714 } else if (!strcmp(args[0], "srvtcpka-intvl")) {
715 if (!(proxy->cap & PR_CAP_BE)) {
716 memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
717 args[0], proxy_type_str(proxy), proxy->id);
718 retval = 1;
719 }
720 proxy->srvtcpka_intvl = tcpka_intvl;
721 } else {
722 /* unreachable */
723 memprintf(err, "'%s': unknown keyword", args[0]);
724 return -1;
725 }
726
727 return retval;
728}
Willy Tarreau52543212020-07-09 05:58:51 +0200729#endif
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +0900730
Willy Tarreauf79d9502014-03-15 07:22:35 +0100731/* This function inserts proxy <px> into the tree of known proxies. The proxy's
732 * name is used as the storing key so it must already have been initialized.
733 */
734void proxy_store_name(struct proxy *px)
735{
736 px->conf.by_name.key = px->id;
737 ebis_insert(&proxy_by_name, &px->conf.by_name);
738}
739
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200740/* Returns a pointer to the first proxy matching capabilities <cap> and id
741 * <id>. NULL is returned if no match is found. If <table> is non-zero, it
742 * only considers proxies having a table.
Willy Tarreaubc216c42011-08-02 11:25:54 +0200743 */
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200744struct proxy *proxy_find_by_id(int id, int cap, int table)
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200745{
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200746 struct eb32_node *n;
Willy Tarreaubc216c42011-08-02 11:25:54 +0200747
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200748 for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) {
749 struct proxy *px = container_of(n, struct proxy, conf.id);
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100750
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200751 if (px->uuid != id)
752 break;
Alex Williams96532db2009-11-01 21:27:13 -0500753
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200754 if ((px->cap & cap) != cap)
755 continue;
Alex Williams96532db2009-11-01 21:27:13 -0500756
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100757 if (table && (!px->table || !px->table->size))
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200758 continue;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100759
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200760 return px;
761 }
762 return NULL;
763}
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100764
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200765/* Returns a pointer to the first proxy matching either name <name>, or id
766 * <name> if <name> begins with a '#'. NULL is returned if no match is found.
767 * If <table> is non-zero, it only considers proxies having a table.
768 */
769struct proxy *proxy_find_by_name(const char *name, int cap, int table)
770{
771 struct proxy *curproxy;
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200772
Willy Tarreau3c56a7d2015-05-26 15:25:32 +0200773 if (*name == '#') {
774 curproxy = proxy_find_by_id(atoi(name + 1), cap, table);
775 if (curproxy)
Willy Tarreauc739aa82015-05-26 11:35:41 +0200776 return curproxy;
Alex Williams96532db2009-11-01 21:27:13 -0500777 }
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100778 else {
779 struct ebpt_node *node;
780
781 for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
782 curproxy = container_of(node, struct proxy, conf.by_name);
Alex Williams96532db2009-11-01 21:27:13 -0500783
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100784 if (strcmp(curproxy->id, name) != 0)
785 break;
786
787 if ((curproxy->cap & cap) != cap)
788 continue;
789
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +0100790 if (table && (!curproxy->table || !curproxy->table->size))
Willy Tarreau9e0bb102015-05-26 11:24:42 +0200791 continue;
792
Willy Tarreauc739aa82015-05-26 11:35:41 +0200793 return curproxy;
Willy Tarreaucfd837f2014-03-15 07:43:51 +0100794 }
795 }
Willy Tarreauc739aa82015-05-26 11:35:41 +0200796 return NULL;
Alex Williams96532db2009-11-01 21:27:13 -0500797}
798
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200799/* Finds the best match for a proxy with capabilities <cap>, name <name> and id
800 * <id>. At most one of <id> or <name> may be different provided that <cap> is
801 * valid. Either <id> or <name> may be left unspecified (0). The purpose is to
802 * find a proxy based on some information from a previous configuration, across
803 * reloads or during information exchange between peers.
804 *
805 * Names are looked up first if present, then IDs are compared if present. In
806 * case of an inexact match whatever is forced in the configuration has
807 * precedence in the following order :
808 * - 1) forced ID (proves a renaming / change of proxy type)
809 * - 2) proxy name+type (may indicate a move if ID differs)
810 * - 3) automatic ID+type (may indicate a renaming)
811 *
812 * Depending on what is found, we can end up in the following situations :
813 *
814 * name id cap | possible causes
815 * -------------+-----------------
816 * -- -- -- | nothing found
817 * -- -- ok | nothing found
818 * -- ok -- | proxy deleted, ID points to next one
819 * -- ok ok | proxy renamed, or deleted with ID pointing to next one
820 * ok -- -- | proxy deleted, but other half with same name still here (before)
821 * ok -- ok | proxy's ID changed (proxy moved in the config file)
822 * ok ok -- | proxy deleted, but other half with same name still here (after)
823 * ok ok ok | perfect match
824 *
825 * Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits :
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200826 * - PR_FBM_MISMATCH_ID : proxy was found but ID differs
827 * (and ID was not zero)
828 * - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs
829 * (and name was not NULL)
830 * - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with
831 * the same name and/or id
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200832 *
833 * Only a valid proxy is returned. If capabilities do not match, NULL is
834 * returned. The caller can check <diff> to report detailed warnings / errors,
835 * and decide whether or not to use what was found.
836 */
837struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff)
838{
839 struct proxy *byname;
840 struct proxy *byid;
841
842 if (!name && !id)
843 return NULL;
844
845 if (diff)
846 *diff = 0;
847
848 byname = byid = NULL;
849
850 if (name) {
851 byname = proxy_find_by_name(name, cap, 0);
852 if (byname && (!id || byname->uuid == id))
853 return byname;
854 }
855
Joseph Herlant59dd2952018-11-15 11:46:55 -0800856 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200857 * - name not set
858 * - name set but not found
859 * - name found, but ID doesn't match.
860 */
861 if (id) {
862 byid = proxy_find_by_id(id, cap, 0);
863 if (byid) {
864 if (byname) {
865 /* id+type found, name+type found, but not all 3.
866 * ID wins only if forced, otherwise name wins.
867 */
868 if (byid->options & PR_O_FORCED_ID) {
869 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200870 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200871 return byid;
872 }
873 else {
874 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200875 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200876 return byname;
877 }
878 }
879
Joseph Herlant59dd2952018-11-15 11:46:55 -0800880 /* remaining possibilities :
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200881 * - name not set
882 * - name set but not found
883 */
884 if (name && diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200885 *diff |= PR_FBM_MISMATCH_NAME;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200886 return byid;
887 }
888
889 /* ID not found */
890 if (byname) {
891 if (diff)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200892 *diff |= PR_FBM_MISMATCH_ID;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200893 return byname;
894 }
895 }
896
Joseph Herlant59dd2952018-11-15 11:46:55 -0800897 /* All remaining possibilities will lead to NULL. If we can report more
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200898 * detailed information to the caller about changed types and/or name,
899 * we'll do it. For example, we could detect that "listen foo" was
900 * split into "frontend foo_ft" and "backend foo_bk" if IDs are forced.
901 * - name not set, ID not found
902 * - name not found, ID not set
903 * - name not found, ID not found
904 */
905 if (!diff)
906 return NULL;
907
908 if (name) {
909 byname = proxy_find_by_name(name, 0, 0);
910 if (byname && (!id || byname->uuid == id))
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200911 *diff |= PR_FBM_MISMATCH_PROXYTYPE;
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200912 }
913
914 if (id) {
915 byid = proxy_find_by_id(id, 0, 0);
916 if (byid) {
917 if (!name)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200918 *diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200919 else if (byid->options & PR_O_FORCED_ID)
Baptiste Assmann8a027cc2015-07-03 11:03:33 +0200920 *diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */
Willy Tarreaueb3e3482015-05-27 16:46:26 +0200921 /* otherwise it's a different proxy that was returned */
922 }
923 }
924 return NULL;
925}
926
Willy Tarreaubaaee002006-06-26 02:48:02 +0200927/*
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100928 * This function finds a server with matching name within selected proxy.
929 * It also checks if there are more matching servers with
930 * requested name as this often leads into unexpected situations.
931 */
932
933struct server *findserver(const struct proxy *px, const char *name) {
934
935 struct server *cursrv, *target = NULL;
936
937 if (!px)
938 return NULL;
939
940 for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
941 if (strcmp(cursrv->id, name))
942 continue;
943
944 if (!target) {
945 target = cursrv;
946 continue;
947 }
948
Christopher Faulet767a84b2017-11-24 16:50:31 +0100949 ha_alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
950 name, px->id);
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +0100951
952 return NULL;
953 }
954
955 return target;
956}
957
Willy Tarreauff01a212009-03-15 13:46:16 +0100958/* This function checks that the designated proxy has no http directives
959 * enabled. It will output a warning if there are, and will fix some of them.
960 * It returns the number of fatal errors encountered. This should be called
961 * at the end of the configuration parsing if the proxy is not in http mode.
962 * The <file> argument is used to construct the error message.
963 */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200964int proxy_cfg_ensure_no_http(struct proxy *curproxy)
Willy Tarreauff01a212009-03-15 13:46:16 +0100965{
966 if (curproxy->cookie_name != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100967 ha_warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
968 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100969 }
Willy Tarreauff01a212009-03-15 13:46:16 +0100970 if (curproxy->monitor_uri != NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100971 ha_warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
972 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100973 }
Willy Tarreauf3e49f92009-10-03 12:21:20 +0200974 if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
Willy Tarreauff01a212009-03-15 13:46:16 +0100975 curproxy->lbprm.algo &= ~BE_LB_ALGO;
976 curproxy->lbprm.algo |= BE_LB_ALGO_RR;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100977 ha_warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
978 proxy_type_str(curproxy), curproxy->id);
Willy Tarreauff01a212009-03-15 13:46:16 +0100979 }
Willy Tarreau17804162009-11-09 21:27:51 +0100980 if (curproxy->to_log & (LW_REQ | LW_RESP)) {
981 curproxy->to_log &= ~(LW_REQ | LW_RESP);
Christopher Faulet767a84b2017-11-24 16:50:31 +0100982 ha_warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
983 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
984 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau17804162009-11-09 21:27:51 +0100985 }
Willy Tarreau62a61232013-04-12 18:13:46 +0200986 if (curproxy->conf.logformat_string == default_http_log_format ||
987 curproxy->conf.logformat_string == clf_http_log_format) {
988 /* Note: we don't change the directive's file:line number */
989 curproxy->conf.logformat_string = default_tcp_log_format;
Christopher Faulet767a84b2017-11-24 16:50:31 +0100990 ha_warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
991 curproxy->conf.lfs_file, curproxy->conf.lfs_line,
992 proxy_type_str(curproxy), curproxy->id);
Willy Tarreau196729e2012-05-31 19:30:26 +0200993 }
994
Willy Tarreauff01a212009-03-15 13:46:16 +0100995 return 0;
996}
997
Willy Tarreau237250c2011-07-29 01:49:03 +0200998/* Perform the most basic initialization of a proxy :
999 * memset(), list_init(*), reset_timeouts(*).
Willy Tarreaub249e842011-09-07 18:41:08 +02001000 * Any new proxy or peer should be initialized via this function.
Willy Tarreau237250c2011-07-29 01:49:03 +02001001 */
1002void init_new_proxy(struct proxy *p)
1003{
1004 memset(p, 0, sizeof(struct proxy));
Willy Tarreau3fdb3662012-11-12 00:42:33 +01001005 p->obj_type = OBJ_TYPE_PROXY;
Patrick Hemmer0355dab2018-05-11 12:52:31 -04001006 p->pendconns = EB_ROOT;
Willy Tarreau237250c2011-07-29 01:49:03 +02001007 LIST_INIT(&p->acl);
1008 LIST_INIT(&p->http_req_rules);
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001009 LIST_INIT(&p->http_res_rules);
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01001010 LIST_INIT(&p->http_after_res_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +02001011 LIST_INIT(&p->redirect_rules);
1012 LIST_INIT(&p->mon_fail_cond);
1013 LIST_INIT(&p->switching_rules);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001014 LIST_INIT(&p->server_rules);
Willy Tarreau237250c2011-07-29 01:49:03 +02001015 LIST_INIT(&p->persist_rules);
1016 LIST_INIT(&p->sticking_rules);
1017 LIST_INIT(&p->storersp_rules);
1018 LIST_INIT(&p->tcp_req.inspect_rules);
1019 LIST_INIT(&p->tcp_rep.inspect_rules);
1020 LIST_INIT(&p->tcp_req.l4_rules);
Willy Tarreau620408f2016-10-21 16:37:51 +02001021 LIST_INIT(&p->tcp_req.l5_rules);
Olivier Houchard859dc802019-08-08 15:47:21 +02001022 MT_LIST_INIT(&p->listener_queue);
William Lallemand0f99e342011-10-12 17:50:54 +02001023 LIST_INIT(&p->logsrvs);
William Lallemand723b73a2012-02-08 16:37:49 +01001024 LIST_INIT(&p->logformat);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02001025 LIST_INIT(&p->logformat_sd);
William Lallemanda73203e2012-03-12 12:48:57 +01001026 LIST_INIT(&p->format_unique_id);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001027 LIST_INIT(&p->conf.bind);
Willy Tarreau4348fad2012-09-20 16:48:07 +02001028 LIST_INIT(&p->conf.listeners);
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001029 LIST_INIT(&p->conf.errors);
Willy Tarreaua4312fa2013-04-02 16:34:32 +02001030 LIST_INIT(&p->conf.args.list);
Christopher Faulet443ea1a2016-02-04 13:40:26 +01001031 LIST_INIT(&p->filter_configs);
Christopher Faulet7a1e2e12020-04-02 18:05:11 +02001032 LIST_INIT(&p->tcpcheck_rules.preset_vars);
Willy Tarreau237250c2011-07-29 01:49:03 +02001033
1034 /* Timeouts are defined as -1 */
1035 proxy_reset_timeouts(p);
1036 p->tcp_rep.inspect_delay = TICK_ETERNITY;
Willy Tarreau050536d2012-10-04 08:47:34 +02001037
1038 /* initial uuid is unassigned (-1) */
1039 p->uuid = -1;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001040
Olivier Houcharda254a372019-04-05 15:30:12 +02001041 /* Default to only allow L4 retries */
1042 p->retry_type = PR_RE_CONN_FAILED;
1043
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001044 HA_SPIN_INIT(&p->lock);
Willy Tarreau237250c2011-07-29 01:49:03 +02001045}
1046
Willy Tarreauacde1522020-10-07 16:31:39 +02001047/* to be called under the proxy lock after stopping some listeners. This will
1048 * automatically update the p->disabled flag after stopping the last one, and
1049 * will emit a log indicating the proxy's condition. The function is idempotent
1050 * so that it will not emit multiple logs; a proxy will be disabled only once.
1051 */
1052void proxy_cond_disable(struct proxy *p)
1053{
1054 if (p->disabled)
1055 return;
1056
1057 if (p->li_ready + p->li_paused > 0)
1058 return;
1059
1060 p->disabled = 1;
1061
1062 if (!(proc_mask(p->bind_proc) & pid_bit))
1063 goto silent;
1064
1065 /* Note: syslog proxies use their own loggers so while it's somewhat OK
1066 * to report them being stopped as a warning, we must not spam their log
1067 * servers which are in fact production servers. For other types (CLI,
1068 * peers, etc) we must not report them at all as they're not really on
1069 * the data plane but on the control plane.
1070 */
1071 if (p->mode == PR_MODE_TCP || p->mode == PR_MODE_HTTP || p->mode == PR_MODE_SYSLOG)
1072 ha_warning("Proxy %s stopped (cumulated conns: FE: %lld, BE: %lld).\n",
1073 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
1074
1075 if (p->mode == PR_MODE_TCP || p->mode == PR_MODE_HTTP)
1076 send_log(p, LOG_WARNING, "Proxy %s stopped (cumulated conns: FE: %lld, BE: %lld).\n",
1077 p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
1078
1079 silent:
1080 if (p->table && p->table->size && p->table->sync_task)
1081 task_wakeup(p->table->sync_task, TASK_WOKEN_MSG);
1082
1083 if (p->task)
1084 task_wakeup(p->task, TASK_WOKEN_MSG);
1085}
1086
Krzysztof Piotr Oledzkic8b16fc2008-02-18 01:26:35 +01001087/*
Willy Tarreau918ff602011-07-25 16:33:49 +02001088 * This is the proxy management task. It enables proxies when there are enough
Willy Tarreau87b09662015-04-03 00:22:06 +02001089 * free streams, or stops them when the table is full. It is designed to be
Willy Tarreau918ff602011-07-25 16:33:49 +02001090 * called as a task which is woken up upon stopping or when rate limiting must
1091 * be enforced.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001092 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02001093struct task *manage_proxy(struct task *t, void *context, unsigned short state)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001094{
Olivier Houchard9f6af332018-05-25 14:04:04 +02001095 struct proxy *p = context;
Willy Tarreau918ff602011-07-25 16:33:49 +02001096 int next = TICK_ETERNITY;
Willy Tarreau79584222009-03-06 09:18:27 +01001097 unsigned int wait;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001098
Willy Tarreau918ff602011-07-25 16:33:49 +02001099 /* We should periodically try to enable listeners waiting for a
1100 * global resource here.
1101 */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001102
Willy Tarreau918ff602011-07-25 16:33:49 +02001103 /* first, let's check if we need to stop the proxy */
Willy Tarreauc3914d42020-09-24 08:39:22 +02001104 if (unlikely(stopping && !p->disabled)) {
Willy Tarreau918ff602011-07-25 16:33:49 +02001105 int t;
1106 t = tick_remain(now_ms, p->stop_time);
1107 if (t == 0) {
Willy Tarreau918ff602011-07-25 16:33:49 +02001108 stop_proxy(p);
1109 /* try to free more memory */
Willy Tarreaubafbe012017-11-24 17:34:44 +01001110 pool_gc(NULL);
Willy Tarreau918ff602011-07-25 16:33:49 +02001111 }
1112 else {
1113 next = tick_first(next, p->stop_time);
1114 }
1115 }
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001116
Willy Tarreau3a925c12013-09-04 17:54:01 +02001117 /* If the proxy holds a stick table, we need to purge all unused
1118 * entries. These are all the ones in the table with ref_cnt == 0
1119 * and all the ones in the pool used to allocate new entries. Any
Willy Tarreau87b09662015-04-03 00:22:06 +02001120 * entry attached to an existing stream waiting for a store will
Willy Tarreau3a925c12013-09-04 17:54:01 +02001121 * be in neither list. Any entry being dumped will have ref_cnt > 0.
1122 * However we protect tables that are being synced to peers.
1123 */
Willy Tarreauc3914d42020-09-24 08:39:22 +02001124 if (unlikely(stopping && p->disabled && p->table && p->table->current)) {
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001125 if (!p->table->syncing) {
1126 stktable_trash_oldest(p->table, p->table->current);
Willy Tarreaubafbe012017-11-24 17:34:44 +01001127 pool_gc(NULL);
Willy Tarreau3a925c12013-09-04 17:54:01 +02001128 }
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001129 if (p->table->current) {
Willy Tarreau3a925c12013-09-04 17:54:01 +02001130 /* some entries still remain, let's recheck in one second */
1131 next = tick_first(next, tick_add(now_ms, 1000));
1132 }
1133 }
1134
Willy Tarreau918ff602011-07-25 16:33:49 +02001135 /* the rest below is just for frontends */
1136 if (!(p->cap & PR_CAP_FE))
1137 goto out;
Willy Tarreauf3f8c702011-07-25 07:37:28 +02001138
Willy Tarreau918ff602011-07-25 16:33:49 +02001139 /* check the various reasons we may find to block the frontend */
Willy Tarreau6b3bf732020-09-24 07:35:46 +02001140 if (unlikely(p->feconn >= p->maxconn))
Willy Tarreau918ff602011-07-25 16:33:49 +02001141 goto out;
Willy Tarreau3a7d2072009-03-05 23:48:25 +01001142
Willy Tarreau918ff602011-07-25 16:33:49 +02001143 if (p->fe_sps_lim &&
1144 (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
1145 /* we're blocking because a limit was reached on the number of
1146 * requests/s on the frontend. We want to re-check ASAP, which
1147 * means in 1 ms before estimated expiration date, because the
1148 * timer will have settled down.
1149 */
1150 next = tick_first(next, tick_add(now_ms, wait));
1151 goto out;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001152 }
Willy Tarreau918ff602011-07-25 16:33:49 +02001153
1154 /* The proxy is not limited so we can re-enable any waiting listener */
Willy Tarreau241797a2019-12-10 14:10:52 +01001155 dequeue_proxy_listeners(p);
Willy Tarreau918ff602011-07-25 16:33:49 +02001156 out:
1157 t->expire = next;
1158 task_queue(t);
1159 return t;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001160}
1161
1162
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001163static int proxy_parse_hard_stop_after(char **args, int section_type, struct proxy *curpx,
1164 struct proxy *defpx, const char *file, int line,
1165 char **err)
1166{
1167 const char *res;
1168
1169 if (!*args[1]) {
1170 memprintf(err, "'%s' expects <time> as argument.\n", args[0]);
1171 return -1;
1172 }
1173 res = parse_time_err(args[1], &global.hard_stop_after, TIME_UNIT_MS);
Willy Tarreau9faebe32019-06-07 19:00:37 +02001174 if (res == PARSE_TIME_OVER) {
1175 memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
1176 args[1], args[0]);
1177 return -1;
1178 }
1179 else if (res == PARSE_TIME_UNDER) {
1180 memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
1181 args[1], args[0]);
1182 return -1;
1183 }
1184 else if (res) {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001185 memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
1186 return -1;
1187 }
1188 return 0;
1189}
1190
Olivier Houchard9f6af332018-05-25 14:04:04 +02001191struct task *hard_stop(struct task *t, void *context, unsigned short state)
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001192{
1193 struct proxy *p;
1194 struct stream *s;
1195
1196 if (killed) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001197 ha_warning("Some tasks resisted to hard-stop, exiting now.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001198 send_log(NULL, LOG_WARNING, "Some tasks resisted to hard-stop, exiting now.\n");
Willy Tarreau7067b3a2019-06-02 11:11:29 +02001199 killed = 2;
1200 t->expire = TICK_ETERNITY;
1201 return t;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001202 }
1203
Christopher Faulet767a84b2017-11-24 16:50:31 +01001204 ha_warning("soft-stop running for too long, performing a hard-stop.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001205 send_log(NULL, LOG_WARNING, "soft-stop running for too long, performing a hard-stop.\n");
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001206 p = proxies_list;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001207 while (p) {
1208 if ((p->cap & PR_CAP_FE) && (p->feconn > 0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001209 ha_warning("Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1210 p->id, p->feconn);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001211 send_log(p, LOG_WARNING, "Proxy %s hard-stopped (%d remaining conns will be closed).\n",
1212 p->id, p->feconn);
1213 }
1214 p = p->next;
1215 }
1216 list_for_each_entry(s, &streams, list) {
1217 stream_shutdown(s, SF_ERR_KILLED);
1218 }
1219
1220 killed = 1;
1221 t->expire = tick_add(now_ms, MS_TO_TICKS(1000));
1222 return t;
1223}
1224
Willy Tarreaubaaee002006-06-26 02:48:02 +02001225/*
1226 * this function disables health-check servers so that the process will quickly be ignored
1227 * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
1228 * time will not be used since it would already not listen anymore to the socket.
1229 */
1230void soft_stop(void)
1231{
1232 struct proxy *p;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001233 struct task *task;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001234
1235 stopping = 1;
William Dauchy3894d972019-12-28 15:36:02 +01001236 /* disable busy polling to avoid cpu eating for the new process */
1237 global.tune.options &= ~GTUNE_BUSY_POLLING;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001238 if (tick_isset(global.hard_stop_after)) {
Emeric Brunc60def82017-09-27 14:59:38 +02001239 task = task_new(MAX_THREADS_MASK);
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001240 if (task) {
1241 task->process = hard_stop;
1242 task_schedule(task, tick_add(now_ms, global.hard_stop_after));
1243 }
1244 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001245 ha_alert("out of memory trying to allocate the hard-stop task.\n");
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001246 }
1247 }
Willy Tarreau626f3a72020-10-07 16:52:43 +02001248
1249 /* stop all stoppable listeners, resulting in disabling all proxies
1250 * that don't use a grace period.
1251 */
1252 protocol_stop_now();
1253
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001254 p = proxies_list;
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001255 tv_update_date(0,1); /* else, the old time before select will be used */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001256 while (p) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02001257 if (!p->disabled) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001258 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 +02001259 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 +02001260 p->stop_time = tick_add(now_ms, p->grace);
Emeric Brun5a8c0a92010-09-23 18:44:36 +02001261
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001262 /* Note: do not wake up stopped proxies' task nor their tables'
1263 * tasks as these ones might point to already released entries.
1264 */
Frédéric Lécaille1b8e68e2019-03-14 07:07:41 +01001265 if (p->table && p->table->size && p->table->sync_task)
1266 task_wakeup(p->table->sync_task, TASK_WOKEN_MSG);
Willy Tarreau20b7afb2015-09-28 16:35:04 +02001267
1268 if (p->task)
1269 task_wakeup(p->task, TASK_WOKEN_MSG);
1270 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001271 p = p->next;
1272 }
Willy Tarreaubbe11b12011-07-25 11:16:24 +02001273
Willy Tarreaud0807c32010-08-27 18:26:11 +02001274 /* signal zero is used to broadcast the "stopping" event */
1275 signal_handler(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001276}
1277
1278
Willy Tarreaube58c382011-07-24 18:28:10 +02001279/* Temporarily disables listening on all of the proxy's listeners. Upon
Willy Tarreaua17c91b2020-09-24 07:44:34 +02001280 * success, the proxy enters the PR_PAUSED state. The function returns 0
Willy Tarreauce8fe252011-09-07 19:14:57 +02001281 * if it fails, or non-zero on success.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001282 */
Willy Tarreauce8fe252011-09-07 19:14:57 +02001283int pause_proxy(struct proxy *p)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001284{
1285 struct listener *l;
Willy Tarreauce8fe252011-09-07 19:14:57 +02001286
Willy Tarreauc3914d42020-09-24 08:39:22 +02001287 if (!(p->cap & PR_CAP_FE) || p->disabled || !p->li_ready)
Willy Tarreauce8fe252011-09-07 19:14:57 +02001288 return 1;
1289
Willy Tarreaua17c91b2020-09-24 07:44:34 +02001290 list_for_each_entry(l, &p->conf.listeners, by_fe)
1291 pause_listener(l);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001292
Willy Tarreaua17c91b2020-09-24 07:44:34 +02001293 if (p->li_ready) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001294 ha_warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
Willy Tarreauce8fe252011-09-07 19:14:57 +02001295 send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
1296 return 0;
1297 }
Willy Tarreauce8fe252011-09-07 19:14:57 +02001298 return 1;
Willy Tarreauda250db2008-10-12 12:07:48 +02001299}
1300
Willy Tarreauda250db2008-10-12 12:07:48 +02001301/*
1302 * This function completely stops a proxy and releases its listeners. It has
1303 * to be called when going down in order to release the ports so that another
1304 * process may bind to them. It must also be called on disabled proxies at the
William Lallemandc59f9882018-11-16 16:57:21 +01001305 * end of start-up. If all listeners are closed, the proxy is set to the
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001306 * PR_STSTOPPED state. The function takes the proxy's lock so it's safe to
1307 * call from multiple places.
Willy Tarreauda250db2008-10-12 12:07:48 +02001308 */
1309void stop_proxy(struct proxy *p)
1310{
1311 struct listener *l;
1312
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001313 HA_SPIN_LOCK(PROXY_LOCK, &p->lock);
1314
Willy Tarreau322b9b92020-10-07 16:20:34 +02001315 list_for_each_entry(l, &p->conf.listeners, by_fe)
1316 stop_listener(l, 1, 0, 0);
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001317
Willy Tarreauba296872020-10-16 15:10:11 +02001318 if (!p->disabled && !p->li_ready) {
1319 /* might be just a backend */
1320 p->disabled = 1;
1321 }
1322
Willy Tarreau3de3cd42019-07-24 17:42:44 +02001323 HA_SPIN_UNLOCK(PROXY_LOCK, &p->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001324}
1325
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001326/* This function resumes listening on the specified proxy. It scans all of its
1327 * listeners and tries to enable them all. If any of them fails, the proxy is
1328 * put back to the paused state. It returns 1 upon success, or zero if an error
1329 * is encountered.
1330 */
1331int resume_proxy(struct proxy *p)
1332{
1333 struct listener *l;
1334 int fail;
1335
Willy Tarreauc3914d42020-09-24 08:39:22 +02001336 if (p->disabled || !p->li_paused)
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001337 return 1;
1338
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001339 fail = 0;
Willy Tarreau4348fad2012-09-20 16:48:07 +02001340 list_for_each_entry(l, &p->conf.listeners, by_fe) {
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001341 if (!resume_listener(l)) {
1342 int port;
1343
Willy Tarreau37159062020-08-27 07:48:42 +02001344 port = get_host_port(&l->rx.addr);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001345 if (port) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001346 ha_warning("Port %d busy while trying to enable %s %s.\n",
1347 port, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001348 send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
1349 port, proxy_cap_str(p->cap), p->id);
1350 }
1351 else {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001352 ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
1353 l->luid, proxy_cap_str(p->cap), p->id);
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001354 send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
1355 l->luid, proxy_cap_str(p->cap), p->id);
1356 }
1357
1358 /* Another port might have been enabled. Let's stop everything. */
1359 fail = 1;
1360 break;
1361 }
1362 }
1363
Willy Tarreauc03ebbf2011-09-07 21:33:14 +02001364 if (fail) {
1365 pause_proxy(p);
1366 return 0;
1367 }
1368 return 1;
1369}
1370
Willy Tarreau87b09662015-04-03 00:22:06 +02001371/* Set current stream's backend to <be>. Nothing is done if the
1372 * stream already had a backend assigned, which is indicated by
Willy Tarreaue7dff022015-04-03 01:14:29 +02001373 * s->flags & SF_BE_ASSIGNED.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001374 * All flags, stats and counters which need be updated are updated.
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001375 * Returns 1 if done, 0 in case of internal error, eg: lack of resource.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001376 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001377int stream_set_backend(struct stream *s, struct proxy *be)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001378{
Willy Tarreaue7dff022015-04-03 01:14:29 +02001379 if (s->flags & SF_BE_ASSIGNED)
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001380 return 1;
Christopher Faulet41179042016-06-21 11:54:52 +02001381
1382 if (flt_set_stream_backend(s, be) < 0)
1383 return 0;
1384
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001385 s->be = be;
Christopher Fauletff8abcd2017-06-02 15:33:24 +02001386 HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
1387 HA_ATOMIC_ADD(&be->beconn, 1));
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001388 proxy_inc_be_ctr(be);
1389
Willy Tarreau87b09662015-04-03 00:22:06 +02001390 /* assign new parameters to the stream from the new backend */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +02001391 s->si[1].flags &= ~SI_FL_INDEP_STR;
1392 if (be->options2 & PR_O2_INDEPSTR)
1393 s->si[1].flags |= SI_FL_INDEP_STR;
1394
Hongbo Longe39683c2017-03-10 18:41:51 +01001395 if (tick_isset(be->timeout.serverfin))
1396 s->si[1].hcto = be->timeout.serverfin;
1397
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001398 /* We want to enable the backend-specific analysers except those which
1399 * were already run as part of the frontend/listener. Note that it would
1400 * be more reliable to store the list of analysers that have been run,
1401 * but what we do here is OK for now.
1402 */
Christopher Faulet70e2f272017-01-09 16:33:19 +01001403 s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001404
Willy Tarreau51aecc72009-07-12 09:47:04 +02001405 /* If the target backend requires HTTP processing, we have to allocate
Christopher Faulet711ed6a2019-07-16 14:16:10 +02001406 * the HTTP transaction if we did not have one.
Willy Tarreau51aecc72009-07-12 09:47:04 +02001407 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001408 if (unlikely(!s->txn && be->http_needed)) {
1409 if (unlikely(!http_alloc_txn(s)))
Willy Tarreau51aecc72009-07-12 09:47:04 +02001410 return 0; /* not enough memory */
Willy Tarreau39e4f622010-05-31 17:01:36 +02001411
1412 /* and now initialize the HTTP transaction state */
1413 http_init_txn(s);
Willy Tarreau51aecc72009-07-12 09:47:04 +02001414 }
1415
Christopher Faulet309c6412015-12-02 09:57:32 +01001416 /* Be sure to filter request headers if the backend is an HTTP proxy and
1417 * if there are filters attached to the stream. */
1418 if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +01001419 s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
Christopher Faulet309c6412015-12-02 09:57:32 +01001420
Willy Tarreaueee5b512015-04-03 23:46:31 +02001421 if (s->txn) {
Christopher Fauletbbe68542019-04-08 10:53:51 +02001422 /* If we chain a TCP frontend to an HTX backend, we must upgrade
1423 * the client mux */
Christopher Faulet60d29b32019-07-15 15:00:25 +02001424 if (!IS_HTX_STRM(s) && be->mode == PR_MODE_HTTP) {
Christopher Fauletbbe68542019-04-08 10:53:51 +02001425 struct connection *conn = objt_conn(strm_sess(s)->origin);
1426 struct conn_stream *cs = objt_cs(s->si[0].end);
1427
1428 if (conn && cs) {
1429 si_rx_endp_more(&s->si[0]);
Olivier Houchard2ab3dad2019-07-03 13:08:18 +02001430 /* Make sure we're unsubscribed, the the new
1431 * mux will probably want to subscribe to
1432 * the underlying XPRT
1433 */
1434 if (s->si[0].wait_event.events)
1435 conn->mux->unsubscribe(cs, s->si[0].wait_event.events,
1436 &s->si[0].wait_event);
Christopher Fauletc985f6c2019-07-15 11:42:52 +02001437 if (conn_upgrade_mux_fe(conn, cs, &s->req.buf, ist(""), PROTO_MODE_HTTP) == -1)
Christopher Fauletbbe68542019-04-08 10:53:51 +02001438 return 0;
Olivier Houchard4c18f942019-07-31 18:05:26 +02001439 if (!strcmp(conn->mux->name, "H2")) {
1440 /* For HTTP/2, destroy the conn_stream,
1441 * disable logging, and pretend that we
1442 * failed, to that the stream is
1443 * silently destroyed. The new mux
1444 * will create new streams.
1445 */
Olivier Houchard59dd06d2019-08-09 18:01:15 +02001446 cs_free(cs);
Olivier Houchard4c18f942019-07-31 18:05:26 +02001447 si_detach_endpoint(&s->si[0]);
1448 s->logs.logwait = 0;
1449 s->logs.level = 0;
1450 s->flags |= SF_IGNORE;
1451 return 0;
1452 }
Olivier Houchard71b20c22019-08-09 17:50:05 +02001453 s->flags |= SF_HTX;
Christopher Fauletbbe68542019-04-08 10:53:51 +02001454 }
1455 }
Christopher Fauleteec7f8a2019-12-20 15:59:20 +01001456 else if (IS_HTX_STRM(s) && be->mode != PR_MODE_HTTP) {
1457 /* If a TCP backend is assgiend to an HTX stream, return
1458 * an error. It may happens for a new stream on a
Ilya Shipitsin47d17182020-06-21 21:42:57 +05001459 * previously upgraded connections. */
Christopher Fauleteec7f8a2019-12-20 15:59:20 +01001460 if (!(s->flags & SF_ERR_MASK))
1461 s->flags |= SF_ERR_INTERNAL;
1462 return 0;
1463 }
Christopher Fauletbbe68542019-04-08 10:53:51 +02001464
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001465 /* we may request to parse a request body */
Christopher Faulet711ed6a2019-07-16 14:16:10 +02001466 if (be->options & PR_O_WREQ_BODY)
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001467 s->req.analysers |= AN_REQ_HTTP_BODY;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001468 }
1469
1470 s->flags |= SF_BE_ASSIGNED;
Willy Tarreau96e31212011-05-30 18:10:30 +02001471 if (be->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01001472 s->req.flags |= CF_NEVER_WAIT;
1473 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02001474 }
1475
Willy Tarreaubedb9ba2009-07-12 08:27:39 +02001476 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02001477}
1478
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001479/* Capture a bad request or response and archive it in the proxy's structure.
1480 * It is relatively protocol-agnostic so it requires that a number of elements
1481 * are passed :
1482 * - <proxy> is the proxy where the error was detected and where the snapshot
1483 * needs to be stored
Joseph Herlant59dd2952018-11-15 11:46:55 -08001484 * - <is_back> indicates that the error happened when receiving the response
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001485 * - <other_end> is a pointer to the proxy on the other side when known
1486 * - <target> is the target of the connection, usually a server or a proxy
1487 * - <sess> is the session which experienced the error
1488 * - <ctx> may be NULL or should contain any info relevant to the protocol
1489 * - <buf> is the buffer containing the offending data
1490 * - <buf_ofs> is the position of this buffer's input data in the input
1491 * stream, starting at zero. It may be passed as zero if unknown.
1492 * - <buf_out> is the portion of <buf->data> which was already forwarded and
1493 * which precedes the buffer's input. The buffer's input starts at
1494 * buf->head + buf_out.
1495 * - <err_pos> is the pointer to the faulty byte in the buffer's input.
1496 * - <show> is the callback to use to display <ctx>. It may be NULL.
1497 */
1498void proxy_capture_error(struct proxy *proxy, int is_back,
1499 struct proxy *other_end, enum obj_type *target,
1500 const struct session *sess,
1501 const struct buffer *buf, long buf_ofs,
1502 unsigned int buf_out, unsigned int err_pos,
1503 const union error_snapshot_ctx *ctx,
1504 void (*show)(struct buffer *, const struct error_snapshot *))
1505{
1506 struct error_snapshot *es;
1507 unsigned int buf_len;
1508 int len1, len2;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001509 unsigned int ev_id;
1510
1511 ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
1512
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001513 buf_len = b_data(buf) - buf_out;
1514
1515 es = malloc(sizeof(*es) + buf_len);
Willy Tarreauc55015e2018-09-07 19:02:32 +02001516 if (!es)
1517 return;
1518
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001519 es->buf_len = buf_len;
1520 es->ev_id = ev_id;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001521
Christopher Faulet47a72102020-01-06 11:37:00 +01001522 len1 = b_size(buf) - b_peek_ofs(buf, buf_out);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001523 if (len1 > buf_len)
1524 len1 = buf_len;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001525
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001526 if (len1) {
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001527 memcpy(es->buf, b_peek(buf, buf_out), len1);
Willy Tarreau4bc7d902018-09-07 20:07:17 +02001528 len2 = buf_len - len1;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001529 if (len2)
1530 memcpy(es->buf + len1, b_orig(buf), len2);
1531 }
1532
1533 es->buf_err = err_pos;
1534 es->when = date; // user-visible date
1535 es->srv = objt_server(target);
1536 es->oe = other_end;
Olivier Houchardbdb00c52020-03-12 15:30:17 +01001537 if (sess && objt_conn(sess->origin) && conn_get_src(__objt_conn(sess->origin)))
Willy Tarreau026efc72019-07-17 15:20:02 +02001538 es->src = *__objt_conn(sess->origin)->src;
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001539 else
1540 memset(&es->src, 0, sizeof(es->src));
1541
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001542 es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
1543 es->buf_out = buf_out;
1544 es->buf_ofs = buf_ofs;
1545
1546 /* be sure to indicate the offset of the first IN byte */
1547 if (es->buf_ofs >= es->buf_len)
1548 es->buf_ofs -= es->buf_len;
1549 else
1550 es->buf_ofs = 0;
1551
1552 /* protocol-specific part now */
1553 if (ctx)
1554 es->ctx = *ctx;
1555 else
1556 memset(&es->ctx, 0, sizeof(es->ctx));
1557 es->show = show;
Willy Tarreauc55015e2018-09-07 19:02:32 +02001558
1559 /* note: we still lock since we have to be certain that nobody is
1560 * dumping the output while we free.
1561 */
1562 HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
1563 if (is_back) {
1564 es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
1565 } else {
1566 es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
1567 }
1568 free(es);
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001569 HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
1570}
1571
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001572/* Configure all proxies which lack a maxconn setting to use the global one by
1573 * default. This avoids the common mistake consisting in setting maxconn only
1574 * in the global section and discovering the hard way that it doesn't propagate
1575 * through the frontends. These values are also propagated through the various
Ilya Shipitsin47d17182020-06-21 21:42:57 +05001576 * targeted backends, whose fullconn is finally calculated if not yet set.
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001577 */
1578void proxy_adjust_all_maxconn()
1579{
1580 struct proxy *curproxy;
1581 struct switching_rule *swrule1, *swrule2;
1582
1583 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02001584 if (curproxy->disabled)
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001585 continue;
1586
1587 if (!(curproxy->cap & PR_CAP_FE))
1588 continue;
1589
1590 if (!curproxy->maxconn)
1591 curproxy->maxconn = global.maxconn;
1592
1593 /* update the target backend's fullconn count : default_backend */
1594 if (curproxy->defbe.be)
1595 curproxy->defbe.be->tot_fe_maxconn += curproxy->maxconn;
1596 else if ((curproxy->cap & PR_CAP_LISTEN) == PR_CAP_LISTEN)
1597 curproxy->tot_fe_maxconn += curproxy->maxconn;
1598
1599 list_for_each_entry(swrule1, &curproxy->switching_rules, list) {
1600 /* For each target of switching rules, we update their
1601 * tot_fe_maxconn, except if a previous rule points to
1602 * the same backend or to the default backend.
1603 */
1604 if (swrule1->be.backend != curproxy->defbe.be) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001605 /* note: swrule1->be.backend isn't a backend if the rule
1606 * is dynamic, it's an expression instead, so it must not
1607 * be dereferenced as a backend before being certain it is.
1608 */
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001609 list_for_each_entry(swrule2, &curproxy->switching_rules, list) {
1610 if (swrule2 == swrule1) {
Frédéric Lécaille2365fb02019-03-07 15:02:52 +01001611 if (!swrule1->dynamic)
1612 swrule1->be.backend->tot_fe_maxconn += curproxy->maxconn;
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001613 break;
1614 }
1615 else if (!swrule2->dynamic && swrule2->be.backend == swrule1->be.backend) {
1616 /* there are multiple refs of this backend */
1617 break;
1618 }
1619 }
1620 }
1621 }
1622 }
1623
1624 /* automatically compute fullconn if not set. We must not do it in the
1625 * loop above because cross-references are not yet fully resolved.
1626 */
1627 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02001628 if (curproxy->disabled)
Willy Tarreauc8d5b952019-02-27 17:25:52 +01001629 continue;
1630
1631 /* If <fullconn> is not set, let's set it to 10% of the sum of
1632 * the possible incoming frontend's maxconns.
1633 */
1634 if (!curproxy->fullconn && (curproxy->cap & PR_CAP_BE)) {
1635 /* we have the sum of the maxconns in <total>. We only
1636 * keep 10% of that sum to set the default fullconn, with
1637 * a hard minimum of 1 (to avoid a divide by zero).
1638 */
1639 curproxy->fullconn = (curproxy->tot_fe_maxconn + 9) / 10;
1640 if (!curproxy->fullconn)
1641 curproxy->fullconn = 1;
1642 }
1643 }
1644}
1645
Willy Tarreau75fb65a2018-09-07 17:43:26 +02001646/* Config keywords below */
1647
Willy Tarreaudc13c112013-06-21 23:16:39 +02001648static struct cfg_kw_list cfg_kws = {ILH, {
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001649 { CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001650 { CFG_LISTEN, "timeout", proxy_parse_timeout },
Tim Duesterhus86e6b6e2019-05-14 20:57:59 +02001651 { CFG_LISTEN, "clitimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1652 { CFG_LISTEN, "contimeout", proxy_parse_timeout }, /* This keyword actually fails to parse, this line remains for better error messages. */
1653 { 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 +01001654 { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
Willy Tarreauc35362a2014-04-25 13:58:37 +02001655 { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
Thierry FOURNIERa0a1b752015-05-26 17:44:32 +02001656 { CFG_LISTEN, "declare", proxy_parse_declare },
Olivier Houcharda254a372019-04-05 15:30:12 +02001657 { CFG_LISTEN, "retry-on", proxy_parse_retry_on },
Willy Tarreau52543212020-07-09 05:58:51 +02001658#ifdef TCP_KEEPCNT
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +09001659 { CFG_LISTEN, "clitcpka-cnt", proxy_parse_tcpka_cnt },
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +09001660 { CFG_LISTEN, "srvtcpka-cnt", proxy_parse_tcpka_cnt },
Willy Tarreau52543212020-07-09 05:58:51 +02001661#endif
1662#ifdef TCP_KEEPIDLE
1663 { CFG_LISTEN, "clitcpka-idle", proxy_parse_tcpka_idle },
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +09001664 { CFG_LISTEN, "srvtcpka-idle", proxy_parse_tcpka_idle },
Willy Tarreau52543212020-07-09 05:58:51 +02001665#endif
1666#ifdef TCP_KEEPINTVL
1667 { CFG_LISTEN, "clitcpka-intvl", proxy_parse_tcpka_intvl },
MIZUTA Takeshib24bc0d2020-07-09 11:13:20 +09001668 { CFG_LISTEN, "srvtcpka-intvl", proxy_parse_tcpka_intvl },
Willy Tarreau52543212020-07-09 05:58:51 +02001669#endif
Willy Tarreau9de1bbd2008-07-09 20:34:27 +02001670 { 0, NULL, NULL },
1671}};
1672
Willy Tarreau0108d902018-11-25 19:14:37 +01001673INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
1674
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001675/* Expects to find a frontend named <arg> and returns it, otherwise displays various
1676 * adequate error messages and returns NULL. This function is designed to be used by
1677 * functions requiring a frontend on the CLI.
1678 */
1679struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
1680{
1681 struct proxy *px;
1682
1683 if (!*arg) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001684 cli_err(appctx, "A frontend name is expected.\n");
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001685 return NULL;
1686 }
1687
1688 px = proxy_fe_by_name(arg);
1689 if (!px) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001690 cli_err(appctx, "No such frontend.\n");
Willy Tarreau960f2cb2016-11-24 12:02:29 +01001691 return NULL;
1692 }
1693 return px;
1694}
1695
Olivier Houchard614f8d72017-03-14 20:08:46 +01001696/* Expects to find a backend named <arg> and returns it, otherwise displays various
1697 * adequate error messages and returns NULL. This function is designed to be used by
1698 * functions requiring a frontend on the CLI.
1699 */
1700struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
1701{
1702 struct proxy *px;
1703
1704 if (!*arg) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001705 cli_err(appctx, "A backend name is expected.\n");
Olivier Houchard614f8d72017-03-14 20:08:46 +01001706 return NULL;
1707 }
1708
1709 px = proxy_be_by_name(arg);
1710 if (!px) {
Willy Tarreau9d008692019-08-09 11:21:01 +02001711 cli_err(appctx, "No such backend.\n");
Olivier Houchard614f8d72017-03-14 20:08:46 +01001712 return NULL;
1713 }
1714 return px;
1715}
1716
1717
Willy Tarreau69f591e2020-07-01 07:00:59 +02001718/* parse a "show servers [state|conn]" CLI line, returns 0 if it wants to start
1719 * the dump or 1 if it stops immediately. If an argument is specified, it will
1720 * set the proxy pointer into cli.p0 and its ID into cli.i0. It sets cli.o0 to
1721 * 0 for "state", or 1 for "conn".
William Lallemanda6c5f332016-11-19 02:25:36 +01001722 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001723static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
William Lallemanda6c5f332016-11-19 02:25:36 +01001724{
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001725 struct proxy *px;
William Lallemanda6c5f332016-11-19 02:25:36 +01001726
Willy Tarreau69f591e2020-07-01 07:00:59 +02001727 appctx->ctx.cli.o0 = *args[2] == 'c'; // "conn" vs "state"
1728
William Lallemanda6c5f332016-11-19 02:25:36 +01001729 /* check if a backend name has been provided */
1730 if (*args[3]) {
1731 /* read server state from local file */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001732 px = proxy_be_by_name(args[3]);
William Lallemanda6c5f332016-11-19 02:25:36 +01001733
Willy Tarreau9d008692019-08-09 11:21:01 +02001734 if (!px)
1735 return cli_err(appctx, "Can't find backend.\n");
1736
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001737 appctx->ctx.cli.p0 = px;
1738 appctx->ctx.cli.i0 = px->uuid;
William Lallemanda6c5f332016-11-19 02:25:36 +01001739 }
1740 return 0;
1741}
1742
Willy Tarreau6ff81432020-07-01 07:02:42 +02001743/* dumps server state information for all the servers found in backend cli.p0.
William Lallemanda6c5f332016-11-19 02:25:36 +01001744 * These information are all the parameters which may change during HAProxy runtime.
1745 * By default, we only export to the last known server state file format.
1746 * These information can be used at next startup to recover same level of server state.
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001747 * It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
1748 * pointer from cli.p1.
William Lallemanda6c5f332016-11-19 02:25:36 +01001749 */
Willy Tarreau6ff81432020-07-01 07:02:42 +02001750static int dump_servers_state(struct stream_interface *si)
William Lallemanda6c5f332016-11-19 02:25:36 +01001751{
1752 struct appctx *appctx = __objt_appctx(si->end);
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001753 struct proxy *px = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001754 struct server *srv;
1755 char srv_addr[INET6_ADDRSTRLEN + 1];
1756 time_t srv_time_since_last_change;
1757 int bk_f_forced_id, srv_f_forced_id;
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001758 char *srvrecord;
William Lallemanda6c5f332016-11-19 02:25:36 +01001759
William Lallemanda6c5f332016-11-19 02:25:36 +01001760 /* we don't want to report any state if the backend is not enabled on this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001761 if (!(proc_mask(px->bind_proc) & pid_bit))
William Lallemanda6c5f332016-11-19 02:25:36 +01001762 return 1;
1763
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001764 if (!appctx->ctx.cli.p1)
1765 appctx->ctx.cli.p1 = px->srv;
William Lallemanda6c5f332016-11-19 02:25:36 +01001766
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001767 for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
1768 srv = appctx->ctx.cli.p1;
William Lallemanda6c5f332016-11-19 02:25:36 +01001769 srv_addr[0] = '\0';
1770
1771 switch (srv->addr.ss_family) {
1772 case AF_INET:
1773 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
1774 srv_addr, INET_ADDRSTRLEN + 1);
1775 break;
1776 case AF_INET6:
1777 inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
1778 srv_addr, INET6_ADDRSTRLEN + 1);
1779 break;
Daniel Corbett9215ffa2018-05-19 19:43:24 -04001780 default:
1781 memcpy(srv_addr, "-\0", 2);
1782 break;
William Lallemanda6c5f332016-11-19 02:25:36 +01001783 }
1784 srv_time_since_last_change = now.tv_sec - srv->last_change;
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001785 bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001786 srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
1787
Baptiste Assmann6d0f38f2018-07-02 17:00:54 +02001788 srvrecord = NULL;
1789 if (srv->srvrq && srv->srvrq->name)
1790 srvrecord = srv->srvrq->name;
1791
Willy Tarreau69f591e2020-07-01 07:00:59 +02001792 if (appctx->ctx.cli.o0 == 0) {
1793 /* show servers state */
1794 chunk_printf(&trash,
1795 "%d %s "
1796 "%d %s %s "
1797 "%d %d %d %d %ld "
1798 "%d %d %d %d %d "
1799 "%d %d %s %u %s"
1800 "\n",
1801 px->uuid, px->id,
1802 srv->puid, srv->id, srv_addr,
1803 srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
1804 srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
1805 bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
1806 srvrecord ? srvrecord : "-");
1807 } else {
1808 /* show servers conn */
1809 int thr;
1810
1811 chunk_printf(&trash,
1812 "%s/%s %d/%d %s %u - %u %u %u %u %u %u %d %u",
1813 px->id, srv->id, px->uuid, srv->puid, srv_addr,srv->svc_port,
1814 srv->pool_purge_delay,
1815 srv->curr_used_conns, srv->max_used_conns, srv->est_need_conns,
1816 srv->curr_idle_nb, srv->curr_safe_nb, (int)srv->max_idle_conns, srv->curr_idle_conns);
1817
Willy Tarreau42abe682020-07-02 15:19:57 +02001818 for (thr = 0; thr < global.nbthread && srv->curr_idle_thr; thr++)
Willy Tarreau69f591e2020-07-01 07:00:59 +02001819 chunk_appendf(&trash, " %u", srv->curr_idle_thr[thr]);
1820
1821 chunk_appendf(&trash, "\n");
1822 }
1823
Willy Tarreau06d80a92017-10-19 14:32:15 +02001824 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001825 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001826 return 0;
1827 }
1828 }
1829 return 1;
1830}
1831
1832/* Parses backend list or simply use backend name provided by the user to return
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001833 * states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
1834 * non-null.
William Lallemanda6c5f332016-11-19 02:25:36 +01001835 */
1836static int cli_io_handler_servers_state(struct appctx *appctx)
1837{
1838 struct stream_interface *si = appctx->owner;
William Lallemanda6c5f332016-11-19 02:25:36 +01001839 struct proxy *curproxy;
1840
1841 chunk_reset(&trash);
1842
1843 if (appctx->st2 == STAT_ST_INIT) {
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001844 if (!appctx->ctx.cli.p0)
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001845 appctx->ctx.cli.p0 = proxies_list;
William Lallemanda6c5f332016-11-19 02:25:36 +01001846 appctx->st2 = STAT_ST_HEAD;
1847 }
1848
1849 if (appctx->st2 == STAT_ST_HEAD) {
Willy Tarreau69f591e2020-07-01 07:00:59 +02001850 if (appctx->ctx.cli.o0 == 0)
1851 chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
1852 else
1853 chunk_printf(&trash,
1854 "# 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",
1855 global.nbthread);
1856
Willy Tarreau06d80a92017-10-19 14:32:15 +02001857 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001858 si_rx_room_blk(si);
William Lallemanda6c5f332016-11-19 02:25:36 +01001859 return 0;
1860 }
1861 appctx->st2 = STAT_ST_INFO;
1862 }
1863
1864 /* STAT_ST_INFO */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001865 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1866 curproxy = appctx->ctx.cli.p0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001867 /* servers are only in backends */
1868 if (curproxy->cap & PR_CAP_BE) {
Willy Tarreau6ff81432020-07-01 07:02:42 +02001869 if (!dump_servers_state(si))
William Lallemanda6c5f332016-11-19 02:25:36 +01001870 return 0;
William Lallemanda6c5f332016-11-19 02:25:36 +01001871 }
1872 /* only the selected proxy is dumped */
Willy Tarreau3c92f2a2016-12-16 18:23:39 +01001873 if (appctx->ctx.cli.i0)
William Lallemanda6c5f332016-11-19 02:25:36 +01001874 break;
1875 }
1876
1877 return 1;
1878}
1879
Willy Tarreau608ea592016-12-16 18:01:15 +01001880/* Parses backend list and simply report backend names. It keeps the proxy
1881 * pointer in cli.p0.
1882 */
William Lallemand933efcd2016-11-22 12:34:16 +01001883static int cli_io_handler_show_backend(struct appctx *appctx)
1884{
William Lallemand933efcd2016-11-22 12:34:16 +01001885 struct stream_interface *si = appctx->owner;
1886 struct proxy *curproxy;
1887
1888 chunk_reset(&trash);
1889
Willy Tarreau608ea592016-12-16 18:01:15 +01001890 if (!appctx->ctx.cli.p0) {
William Lallemand933efcd2016-11-22 12:34:16 +01001891 chunk_printf(&trash, "# name\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +02001892 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001893 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001894 return 0;
1895 }
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001896 appctx->ctx.cli.p0 = proxies_list;
William Lallemand933efcd2016-11-22 12:34:16 +01001897 }
1898
Willy Tarreau608ea592016-12-16 18:01:15 +01001899 for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
1900 curproxy = appctx->ctx.cli.p0;
William Lallemand933efcd2016-11-22 12:34:16 +01001901
1902 /* looking for backends only */
1903 if (!(curproxy->cap & PR_CAP_BE))
1904 continue;
1905
1906 /* we don't want to list a backend which is bound to this process */
Willy Tarreau6daac192019-02-02 17:39:53 +01001907 if (!(proc_mask(curproxy->bind_proc) & pid_bit))
William Lallemand933efcd2016-11-22 12:34:16 +01001908 continue;
1909
1910 chunk_appendf(&trash, "%s\n", curproxy->id);
Willy Tarreau06d80a92017-10-19 14:32:15 +02001911 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreaudb398432018-11-15 11:08:52 +01001912 si_rx_room_blk(si);
William Lallemand933efcd2016-11-22 12:34:16 +01001913 return 0;
1914 }
1915 }
1916
1917 return 1;
1918}
William Lallemanda6c5f332016-11-19 02:25:36 +01001919
Willy Tarreaua275a372018-08-21 14:50:44 +02001920/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
1921 *
1922 * Grabs the proxy lock and each server's lock.
1923 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001924static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001925{
1926 struct proxy *px;
1927 struct server *s;
1928
1929 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1930 return 1;
1931
1932 px = cli_find_backend(appctx, args[3]);
1933 if (!px)
1934 return 1;
1935
Willy Tarreau5e83d992019-07-30 11:59:34 +02001936 /* Note: this lock is to make sure this doesn't change while another
1937 * thread is in srv_set_dyncookie().
1938 */
Willy Tarreaua275a372018-08-21 14:50:44 +02001939 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001940 px->ck_opts |= PR_CK_DYNAMIC;
Willy Tarreau5e83d992019-07-30 11:59:34 +02001941 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001942
Willy Tarreaua275a372018-08-21 14:50:44 +02001943 for (s = px->srv; s != NULL; s = s->next) {
1944 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001945 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02001946 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
1947 }
1948
Olivier Houchard614f8d72017-03-14 20:08:46 +01001949 return 1;
1950}
1951
Willy Tarreaua275a372018-08-21 14:50:44 +02001952/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
1953 *
1954 * Grabs the proxy lock and each server's lock.
1955 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001956static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001957{
1958 struct proxy *px;
1959 struct server *s;
1960
1961 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1962 return 1;
1963
1964 px = cli_find_backend(appctx, args[3]);
1965 if (!px)
1966 return 1;
1967
Willy Tarreau5e83d992019-07-30 11:59:34 +02001968 /* Note: this lock is to make sure this doesn't change while another
1969 * thread is in srv_set_dyncookie().
1970 */
Willy Tarreaua275a372018-08-21 14:50:44 +02001971 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001972 px->ck_opts &= ~PR_CK_DYNAMIC;
Willy Tarreau5e83d992019-07-30 11:59:34 +02001973 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001974
1975 for (s = px->srv; s != NULL; s = s->next) {
Willy Tarreaua275a372018-08-21 14:50:44 +02001976 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001977 if (!(s->flags & SRV_F_COOKIESET)) {
1978 free(s->cookie);
1979 s->cookie = NULL;
1980 }
Willy Tarreaua275a372018-08-21 14:50:44 +02001981 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01001982 }
1983
1984 return 1;
1985}
1986
Willy Tarreaua275a372018-08-21 14:50:44 +02001987/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
1988 *
1989 * Grabs the proxy lock and each server's lock.
1990 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02001991static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
Olivier Houchard614f8d72017-03-14 20:08:46 +01001992{
1993 struct proxy *px;
1994 struct server *s;
1995 char *newkey;
1996
1997 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
1998 return 1;
1999
2000 px = cli_find_backend(appctx, args[3]);
2001 if (!px)
2002 return 1;
2003
Willy Tarreau9d008692019-08-09 11:21:01 +02002004 if (!*args[4])
2005 return cli_err(appctx, "String value expected.\n");
Olivier Houchard614f8d72017-03-14 20:08:46 +01002006
2007 newkey = strdup(args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02002008 if (!newkey)
2009 return cli_err(appctx, "Failed to allocate memory.\n");
Willy Tarreaua275a372018-08-21 14:50:44 +02002010
Willy Tarreau5e83d992019-07-30 11:59:34 +02002011 /* Note: this lock is to make sure this doesn't change while another
2012 * thread is in srv_set_dyncookie().
2013 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002014 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002015 free(px->dyncookie_key);
2016 px->dyncookie_key = newkey;
Willy Tarreau5e83d992019-07-30 11:59:34 +02002017 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002018
Willy Tarreaua275a372018-08-21 14:50:44 +02002019 for (s = px->srv; s != NULL; s = s->next) {
2020 HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
Olivier Houchard614f8d72017-03-14 20:08:46 +01002021 srv_set_dyncookie(s);
Willy Tarreaua275a372018-08-21 14:50:44 +02002022 HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
2023 }
2024
Olivier Houchard614f8d72017-03-14 20:08:46 +01002025 return 1;
2026}
2027
Willy Tarreaua275a372018-08-21 14:50:44 +02002028/* Parses the "set maxconn frontend" directive, it always returns 1.
2029 *
2030 * Grabs the proxy lock.
2031 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002032static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002033{
2034 struct proxy *px;
2035 struct listener *l;
2036 int v;
2037
2038 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2039 return 1;
2040
2041 px = cli_find_frontend(appctx, args[3]);
2042 if (!px)
2043 return 1;
2044
Willy Tarreau9d008692019-08-09 11:21:01 +02002045 if (!*args[4])
2046 return cli_err(appctx, "Integer value expected.\n");
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002047
2048 v = atoi(args[4]);
Willy Tarreau9d008692019-08-09 11:21:01 +02002049 if (v < 0)
2050 return cli_err(appctx, "Value out of range.\n");
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002051
2052 /* OK, the value is fine, so we assign it to the proxy and to all of
2053 * its listeners. The blocked ones will be dequeued.
2054 */
Willy Tarreaua275a372018-08-21 14:50:44 +02002055 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2056
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002057 px->maxconn = v;
2058 list_for_each_entry(l, &px->conf.listeners, by_fe) {
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002059 if (l->state == LI_FULL)
2060 resume_listener(l);
2061 }
2062
Willy Tarreau241797a2019-12-10 14:10:52 +01002063 if (px->maxconn > px->feconn)
2064 dequeue_proxy_listeners(px);
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002065
Willy Tarreaua275a372018-08-21 14:50:44 +02002066 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2067
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002068 return 1;
2069}
2070
Willy Tarreaua275a372018-08-21 14:50:44 +02002071/* Parses the "shutdown frontend" directive, it always returns 1.
2072 *
2073 * Grabs the proxy lock.
2074 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002075static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002076{
2077 struct proxy *px;
2078
2079 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2080 return 1;
2081
2082 px = cli_find_frontend(appctx, args[2]);
2083 if (!px)
2084 return 1;
2085
Willy Tarreauc3914d42020-09-24 08:39:22 +02002086 if (px->disabled)
Willy Tarreau9d008692019-08-09 11:21:01 +02002087 return cli_msg(appctx, LOG_NOTICE, "Frontend was already shut down.\n");
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002088
Willy Tarreau5212d7f2016-11-24 11:13:06 +01002089 stop_proxy(px);
2090 return 1;
2091}
2092
Willy Tarreaua275a372018-08-21 14:50:44 +02002093/* Parses the "disable frontend" directive, it always returns 1.
2094 *
2095 * Grabs the proxy lock.
2096 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002097static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002098{
2099 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002100 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002101
2102 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2103 return 1;
2104
2105 px = cli_find_frontend(appctx, args[2]);
2106 if (!px)
2107 return 1;
2108
Willy Tarreauc3914d42020-09-24 08:39:22 +02002109 if (px->disabled)
Willy Tarreau9d008692019-08-09 11:21:01 +02002110 return cli_msg(appctx, LOG_NOTICE, "Frontend was previously shut down, cannot disable.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002111
Willy Tarreauf18d9682020-09-24 08:04:27 +02002112 if (!px->li_ready)
2113 return cli_msg(appctx, LOG_NOTICE, "All sockets are already disabled.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002114
Willy Tarreaua275a372018-08-21 14:50:44 +02002115 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2116 ret = pause_proxy(px);
2117 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2118
Willy Tarreau9d008692019-08-09 11:21:01 +02002119 if (!ret)
2120 return cli_err(appctx, "Failed to pause frontend, check logs for precise cause.\n");
2121
Willy Tarreau15b9e682016-11-24 11:55:28 +01002122 return 1;
2123}
2124
Willy Tarreaua275a372018-08-21 14:50:44 +02002125/* Parses the "enable frontend" directive, it always returns 1.
2126 *
2127 * Grabs the proxy lock.
2128 */
Aurélien Nephtaliabbf6072018-04-18 13:26:46 +02002129static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
Willy Tarreau15b9e682016-11-24 11:55:28 +01002130{
2131 struct proxy *px;
Willy Tarreaua275a372018-08-21 14:50:44 +02002132 int ret;
Willy Tarreau15b9e682016-11-24 11:55:28 +01002133
2134 if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
2135 return 1;
2136
2137 px = cli_find_frontend(appctx, args[2]);
2138 if (!px)
2139 return 1;
2140
Willy Tarreauc3914d42020-09-24 08:39:22 +02002141 if (px->disabled)
Willy Tarreau9d008692019-08-09 11:21:01 +02002142 return cli_err(appctx, "Frontend was previously shut down, cannot enable.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002143
Willy Tarreauf18d9682020-09-24 08:04:27 +02002144 if (px->li_ready == px->li_all)
2145 return cli_msg(appctx, LOG_NOTICE, "All sockets are already enabled.\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002146
Willy Tarreaua275a372018-08-21 14:50:44 +02002147 HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
2148 ret = resume_proxy(px);
2149 HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
2150
Willy Tarreau9d008692019-08-09 11:21:01 +02002151 if (!ret)
2152 return cli_err(appctx, "Failed to resume frontend, check logs for precise cause (port conflict?).\n");
Willy Tarreau15b9e682016-11-24 11:55:28 +01002153 return 1;
2154}
2155
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002156/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
2157 * now.
2158 */
2159static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
2160{
2161 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
2162 return 1;
2163
2164 if (*args[2]) {
2165 struct proxy *px;
2166
2167 px = proxy_find_by_name(args[2], 0, 0);
2168 if (px)
2169 appctx->ctx.errors.iid = px->uuid;
2170 else
2171 appctx->ctx.errors.iid = atoi(args[2]);
2172
Willy Tarreau9d008692019-08-09 11:21:01 +02002173 if (!appctx->ctx.errors.iid)
2174 return cli_err(appctx, "No such proxy.\n");
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002175 }
2176 else
2177 appctx->ctx.errors.iid = -1; // dump all proxies
2178
2179 appctx->ctx.errors.flag = 0;
2180 if (strcmp(args[3], "request") == 0)
2181 appctx->ctx.errors.flag |= 4; // ignore response
2182 else if (strcmp(args[3], "response") == 0)
2183 appctx->ctx.errors.flag |= 2; // ignore request
2184 appctx->ctx.errors.px = NULL;
2185 return 0;
2186}
2187
2188/* This function dumps all captured errors onto the stream interface's
2189 * read buffer. It returns 0 if the output buffer is full and it needs
2190 * to be called again, otherwise non-zero.
2191 */
2192static int cli_io_handler_show_errors(struct appctx *appctx)
2193{
2194 struct stream_interface *si = appctx->owner;
2195 extern const char *monthname[12];
2196
2197 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
2198 return 1;
2199
2200 chunk_reset(&trash);
2201
2202 if (!appctx->ctx.errors.px) {
2203 /* the function had not been called yet, let's prepare the
2204 * buffer for a response.
2205 */
2206 struct tm tm;
2207
2208 get_localtime(date.tv_sec, &tm);
2209 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
2210 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2211 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
2212 error_snapshot_id);
2213
Willy Tarreau36b27362018-09-07 19:55:44 +02002214 if (ci_putchk(si_ic(si), &trash) == -1)
2215 goto cant_send;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002216
2217 appctx->ctx.errors.px = proxies_list;
2218 appctx->ctx.errors.bol = 0;
2219 appctx->ctx.errors.ptr = -1;
2220 }
2221
2222 /* we have two inner loops here, one for the proxy, the other one for
2223 * the buffer.
2224 */
2225 while (appctx->ctx.errors.px) {
2226 struct error_snapshot *es;
2227
Willy Tarreau36b27362018-09-07 19:55:44 +02002228 HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2229
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002230 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002231 es = appctx->ctx.errors.px->invalid_req;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002232 if (appctx->ctx.errors.flag & 2) // skip req
2233 goto next;
2234 }
2235 else {
Willy Tarreauc55015e2018-09-07 19:02:32 +02002236 es = appctx->ctx.errors.px->invalid_rep;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002237 if (appctx->ctx.errors.flag & 4) // skip resp
2238 goto next;
2239 }
2240
Willy Tarreauc55015e2018-09-07 19:02:32 +02002241 if (!es)
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002242 goto next;
2243
2244 if (appctx->ctx.errors.iid >= 0 &&
2245 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
Olivier Houchardbdb00c52020-03-12 15:30:17 +01002246 (!es->oe || es->oe->uuid != appctx->ctx.errors.iid))
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002247 goto next;
2248
2249 if (appctx->ctx.errors.ptr < 0) {
2250 /* just print headers now */
2251
2252 char pn[INET6_ADDRSTRLEN];
2253 struct tm tm;
2254 int port;
2255
2256 get_localtime(es->when.tv_sec, &tm);
2257 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
2258 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
2259 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
2260
2261 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
2262 case AF_INET:
2263 case AF_INET6:
2264 port = get_host_port(&es->src);
2265 break;
2266 default:
2267 port = 0;
2268 }
2269
2270 switch (appctx->ctx.errors.flag & 1) {
2271 case 0:
2272 chunk_appendf(&trash,
2273 " frontend %s (#%d): invalid request\n"
2274 " backend %s (#%d)",
2275 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
Olivier Houchardbdb00c52020-03-12 15:30:17 +01002276 (es->oe && es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
2277 (es->oe && es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002278 break;
2279 case 1:
2280 chunk_appendf(&trash,
2281 " backend %s (#%d): invalid response\n"
2282 " frontend %s (#%d)",
2283 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
Olivier Houchardbdb00c52020-03-12 15:30:17 +01002284 es->oe ? es->oe->id : "<NONE>" , es->oe ? es->oe->uuid : -1);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002285 break;
2286 }
2287
2288 chunk_appendf(&trash,
2289 ", server %s (#%d), event #%u, src %s:%d\n"
2290 " buffer starts at %llu (including %u out), %u free,\n"
2291 " len %u, wraps at %u, error at position %u\n",
2292 es->srv ? es->srv->id : "<NONE>",
2293 es->srv ? es->srv->puid : -1,
2294 es->ev_id, pn, port,
2295 es->buf_ofs, es->buf_out,
2296 global.tune.bufsize - es->buf_out - es->buf_len,
2297 es->buf_len, es->buf_wrap, es->buf_err);
2298
2299 if (es->show)
2300 es->show(&trash, es);
2301
2302 chunk_appendf(&trash, " \n");
2303
Willy Tarreau36b27362018-09-07 19:55:44 +02002304 if (ci_putchk(si_ic(si), &trash) == -1)
2305 goto cant_send_unlock;
2306
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002307 appctx->ctx.errors.ptr = 0;
2308 appctx->ctx.errors.ev_id = es->ev_id;
2309 }
2310
2311 if (appctx->ctx.errors.ev_id != es->ev_id) {
2312 /* the snapshot changed while we were dumping it */
2313 chunk_appendf(&trash,
2314 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau36b27362018-09-07 19:55:44 +02002315 if (ci_putchk(si_ic(si), &trash) == -1)
2316 goto cant_send_unlock;
2317
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002318 goto next;
2319 }
2320
2321 /* OK, ptr >= 0, so we have to dump the current line */
Willy Tarreau4bc7d902018-09-07 20:07:17 +02002322 while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002323 int newptr;
2324 int newline;
2325
2326 newline = appctx->ctx.errors.bol;
2327 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
2328 if (newptr == appctx->ctx.errors.ptr)
Willy Tarreau36b27362018-09-07 19:55:44 +02002329 goto cant_send_unlock;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002330
Willy Tarreau36b27362018-09-07 19:55:44 +02002331 if (ci_putchk(si_ic(si), &trash) == -1)
2332 goto cant_send_unlock;
2333
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002334 appctx->ctx.errors.ptr = newptr;
2335 appctx->ctx.errors.bol = newline;
2336 };
2337 next:
Willy Tarreau36b27362018-09-07 19:55:44 +02002338 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002339 appctx->ctx.errors.bol = 0;
2340 appctx->ctx.errors.ptr = -1;
2341 appctx->ctx.errors.flag ^= 1;
2342 if (!(appctx->ctx.errors.flag & 1))
2343 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
2344 }
2345
2346 /* dump complete */
2347 return 1;
Willy Tarreau36b27362018-09-07 19:55:44 +02002348
2349 cant_send_unlock:
2350 HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
2351 cant_send:
Willy Tarreaudb398432018-11-15 11:08:52 +01002352 si_rx_room_blk(si);
Willy Tarreau36b27362018-09-07 19:55:44 +02002353 return 0;
Willy Tarreauddb68ac2018-09-07 18:34:24 +02002354}
2355
William Lallemanda6c5f332016-11-19 02:25:36 +01002356/* register cli keywords */
2357static struct cli_kw_list cli_kws = {{ },{
Willy Tarreau15b9e682016-11-24 11:55:28 +01002358 { { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
2359 { { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
Willy Tarreauc429a1f2016-11-23 16:22:04 +01002360 { { "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 +02002361 { { "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 +01002362 { { "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 +01002363 { { "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 +01002364 { { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
Olivier Houchard614f8d72017-03-14 20:08:46 +01002365 { { "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 },
2366 { { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
2367 { { "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 +02002368 { { "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 +01002369 {{},}
2370}};
2371
Willy Tarreau0108d902018-11-25 19:14:37 +01002372INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002373
2374/*
2375 * Local variables:
2376 * c-indent-level: 8
2377 * c-basic-offset: 8
2378 * End:
2379 */