mirror of
http://git.haproxy.org/git/haproxy.git/
synced 2024-12-23 04:42:28 +00:00
0108d90c6c
This switches explicit calls to various trivial registration methods for keywords, muxes or protocols from constructors to INITCALL1 at stage STG_REGISTER. All these calls have in common to consume a single pointer and return void. Doing this removes 26 constructors. The following calls were addressed : - acl_register_keywords - bind_register_keywords - cfg_register_keywords - cli_register_kw - flt_register_keywords - http_req_keywords_register - http_res_keywords_register - protocol_register - register_mux_proto - sample_register_convs - sample_register_fetches - srv_register_keywords - tcp_req_conn_keywords_register - tcp_req_cont_keywords_register - tcp_req_sess_keywords_register - tcp_res_cont_keywords_register - flt_register_keywords
2243 lines
66 KiB
C
2243 lines
66 KiB
C
/*
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* Proxy variables and functions.
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*
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* Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*/
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <common/defaults.h>
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#include <common/cfgparse.h>
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#include <common/compat.h>
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#include <common/config.h>
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#include <common/errors.h>
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#include <common/initcall.h>
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#include <common/memory.h>
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#include <common/time.h>
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#include <eb32tree.h>
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#include <ebistree.h>
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#include <types/capture.h>
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#include <types/cli.h>
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#include <types/global.h>
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#include <types/obj_type.h>
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#include <types/peers.h>
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#include <types/stats.h>
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#include <proto/applet.h>
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#include <proto/cli.h>
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#include <proto/backend.h>
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#include <proto/fd.h>
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#include <proto/filters.h>
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#include <proto/hdr_idx.h>
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#include <proto/listener.h>
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#include <proto/log.h>
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#include <proto/proto_tcp.h>
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#include <proto/proto_http.h>
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#include <proto/proxy.h>
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#include <proto/server.h>
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#include <proto/signal.h>
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#include <proto/stream.h>
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#include <proto/stream_interface.h>
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#include <proto/task.h>
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int listeners; /* # of proxy listeners, set by cfgparse */
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struct proxy *proxies_list = NULL; /* list of all existing proxies */
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struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */
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struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */
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unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */
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/* proxy->options */
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const struct cfg_opt cfg_opts[] =
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{
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{ "abortonclose", PR_O_ABRT_CLOSE, PR_CAP_BE, 0, 0 },
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{ "allbackups", PR_O_USE_ALL_BK, PR_CAP_BE, 0, 0 },
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{ "checkcache", PR_O_CHK_CACHE, PR_CAP_BE, 0, PR_MODE_HTTP },
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{ "clitcpka", PR_O_TCP_CLI_KA, PR_CAP_FE, 0, 0 },
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{ "contstats", PR_O_CONTSTATS, PR_CAP_FE, 0, 0 },
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{ "dontlognull", PR_O_NULLNOLOG, PR_CAP_FE, 0, 0 },
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{ "http_proxy", PR_O_HTTP_PROXY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
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{ "http-buffer-request", PR_O_WREQ_BODY, PR_CAP_FE | PR_CAP_BE, 0, PR_MODE_HTTP },
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{ "http-ignore-probes", PR_O_IGNORE_PRB, PR_CAP_FE, 0, PR_MODE_HTTP },
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{ "prefer-last-server", PR_O_PREF_LAST, PR_CAP_BE, 0, PR_MODE_HTTP },
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{ "logasap", PR_O_LOGASAP, PR_CAP_FE, 0, 0 },
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{ "nolinger", PR_O_TCP_NOLING, PR_CAP_FE | PR_CAP_BE, 0, 0 },
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{ "persist", PR_O_PERSIST, PR_CAP_BE, 0, 0 },
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{ "srvtcpka", PR_O_TCP_SRV_KA, PR_CAP_BE, 0, 0 },
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#ifdef TPROXY
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{ "transparent", PR_O_TRANSP, PR_CAP_BE, 0, 0 },
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#else
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{ "transparent", 0, 0, 0, 0 },
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#endif
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{ NULL, 0, 0, 0, 0 }
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};
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/* proxy->options2 */
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const struct cfg_opt cfg_opts2[] =
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{
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#ifdef CONFIG_HAP_LINUX_SPLICE
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{ "splice-request", PR_O2_SPLIC_REQ, PR_CAP_FE|PR_CAP_BE, 0, 0 },
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{ "splice-response", PR_O2_SPLIC_RTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
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{ "splice-auto", PR_O2_SPLIC_AUT, PR_CAP_FE|PR_CAP_BE, 0, 0 },
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#else
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{ "splice-request", 0, 0, 0, 0 },
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{ "splice-response", 0, 0, 0, 0 },
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{ "splice-auto", 0, 0, 0, 0 },
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#endif
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{ "accept-invalid-http-request", PR_O2_REQBUG_OK, PR_CAP_FE, 0, PR_MODE_HTTP },
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{ "accept-invalid-http-response", PR_O2_RSPBUG_OK, PR_CAP_BE, 0, PR_MODE_HTTP },
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{ "dontlog-normal", PR_O2_NOLOGNORM, PR_CAP_FE, 0, 0 },
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{ "log-separate-errors", PR_O2_LOGERRORS, PR_CAP_FE, 0, 0 },
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{ "log-health-checks", PR_O2_LOGHCHKS, PR_CAP_BE, 0, 0 },
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{ "socket-stats", PR_O2_SOCKSTAT, PR_CAP_FE, 0, 0 },
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{ "tcp-smart-accept", PR_O2_SMARTACC, PR_CAP_FE, 0, 0 },
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{ "tcp-smart-connect", PR_O2_SMARTCON, PR_CAP_BE, 0, 0 },
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{ "independant-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
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{ "independent-streams", PR_O2_INDEPSTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
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{ "http-use-proxy-header", PR_O2_USE_PXHDR, PR_CAP_FE, 0, PR_MODE_HTTP },
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{ "http-pretend-keepalive", PR_O2_FAKE_KA, PR_CAP_BE, 0, PR_MODE_HTTP },
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{ "http-no-delay", PR_O2_NODELAY, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
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{ "http-use-htx", PR_O2_USE_HTX, PR_CAP_FE|PR_CAP_BE, 0, PR_MODE_HTTP },
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{ NULL, 0, 0, 0 }
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};
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/*
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* This function returns a string containing a name describing capabilities to
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* report comprehensible error messages. Specifically, it will return the words
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* "frontend", "backend" when appropriate, or "proxy" for all other
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* cases including the proxies declared in "listen" mode.
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*/
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const char *proxy_cap_str(int cap)
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{
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if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) {
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if (cap & PR_CAP_FE)
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return "frontend";
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else if (cap & PR_CAP_BE)
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return "backend";
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}
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return "proxy";
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}
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/*
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* This function returns a string containing the mode of the proxy in a format
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* suitable for error messages.
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*/
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const char *proxy_mode_str(int mode) {
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if (mode == PR_MODE_TCP)
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return "tcp";
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else if (mode == PR_MODE_HTTP)
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return "http";
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else if (mode == PR_MODE_HEALTH)
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return "health";
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else if (mode == PR_MODE_CLI)
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return "cli";
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else
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return "unknown";
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}
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/*
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* This function scans the list of backends and servers to retrieve the first
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* backend and the first server with the given names, and sets them in both
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* parameters. It returns zero if either is not found, or non-zero and sets
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* the ones it did not found to NULL. If a NULL pointer is passed for the
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* backend, only the pointer to the server will be updated.
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*/
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int get_backend_server(const char *bk_name, const char *sv_name,
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struct proxy **bk, struct server **sv)
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{
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struct proxy *p;
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struct server *s;
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int sid;
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*sv = NULL;
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sid = -1;
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if (*sv_name == '#')
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sid = atoi(sv_name + 1);
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p = proxy_be_by_name(bk_name);
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if (bk)
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*bk = p;
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if (!p)
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return 0;
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for (s = p->srv; s; s = s->next)
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if ((sid >= 0 && s->puid == sid) ||
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(sid < 0 && strcmp(s->id, sv_name) == 0))
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break;
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*sv = s;
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if (!s)
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return 0;
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return 1;
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}
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/* This function parses a "timeout" statement in a proxy section. It returns
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* -1 if there is any error, 1 for a warning, otherwise zero. If it does not
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* return zero, it will write an error or warning message into a preallocated
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* buffer returned at <err>. The trailing is not be written. The function must
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* be called with <args> pointing to the first command line word, with <proxy>
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* pointing to the proxy being parsed, and <defpx> to the default proxy or NULL.
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* As a special case for compatibility with older configs, it also accepts
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* "{cli|srv|con}timeout" in args[0].
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*/
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static int proxy_parse_timeout(char **args, int section, struct proxy *proxy,
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struct proxy *defpx, const char *file, int line,
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char **err)
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{
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unsigned timeout;
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int retval, cap;
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const char *res, *name;
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int *tv = NULL;
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int *td = NULL;
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int warn = 0;
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retval = 0;
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/* simply skip "timeout" but remain compatible with old form */
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if (strcmp(args[0], "timeout") == 0)
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args++;
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name = args[0];
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if (!strcmp(args[0], "client") || (!strcmp(args[0], "clitimeout") && (warn = WARN_CLITO_DEPRECATED))) {
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name = "client";
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tv = &proxy->timeout.client;
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td = &defpx->timeout.client;
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cap = PR_CAP_FE;
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} else if (!strcmp(args[0], "tarpit")) {
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tv = &proxy->timeout.tarpit;
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td = &defpx->timeout.tarpit;
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cap = PR_CAP_FE | PR_CAP_BE;
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} else if (!strcmp(args[0], "http-keep-alive")) {
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tv = &proxy->timeout.httpka;
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td = &defpx->timeout.httpka;
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cap = PR_CAP_FE | PR_CAP_BE;
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} else if (!strcmp(args[0], "http-request")) {
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tv = &proxy->timeout.httpreq;
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td = &defpx->timeout.httpreq;
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cap = PR_CAP_FE | PR_CAP_BE;
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} else if (!strcmp(args[0], "server") || (!strcmp(args[0], "srvtimeout") && (warn = WARN_SRVTO_DEPRECATED))) {
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name = "server";
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tv = &proxy->timeout.server;
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td = &defpx->timeout.server;
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cap = PR_CAP_BE;
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} else if (!strcmp(args[0], "connect") || (!strcmp(args[0], "contimeout") && (warn = WARN_CONTO_DEPRECATED))) {
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name = "connect";
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tv = &proxy->timeout.connect;
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td = &defpx->timeout.connect;
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cap = PR_CAP_BE;
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} else if (!strcmp(args[0], "check")) {
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tv = &proxy->timeout.check;
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td = &defpx->timeout.check;
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cap = PR_CAP_BE;
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} else if (!strcmp(args[0], "queue")) {
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tv = &proxy->timeout.queue;
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td = &defpx->timeout.queue;
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cap = PR_CAP_BE;
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} else if (!strcmp(args[0], "tunnel")) {
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tv = &proxy->timeout.tunnel;
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td = &defpx->timeout.tunnel;
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cap = PR_CAP_BE;
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} else if (!strcmp(args[0], "client-fin")) {
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tv = &proxy->timeout.clientfin;
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td = &defpx->timeout.clientfin;
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cap = PR_CAP_FE;
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} else if (!strcmp(args[0], "server-fin")) {
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tv = &proxy->timeout.serverfin;
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td = &defpx->timeout.serverfin;
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cap = PR_CAP_BE;
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} else {
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memprintf(err,
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"'timeout' supports 'client', 'server', 'connect', 'check', "
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"'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', "
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"'client-fin' and 'server-fin' (got '%s')",
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args[0]);
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return -1;
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}
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if (*args[1] == 0) {
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memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name);
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return -1;
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}
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res = parse_time_err(args[1], &timeout, TIME_UNIT_MS);
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if (res) {
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memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name);
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return -1;
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}
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if (!(proxy->cap & cap)) {
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memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability",
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name, proxy_type_str(proxy), proxy->id,
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(cap & PR_CAP_BE) ? "backend" : "frontend");
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retval = 1;
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}
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else if (defpx && *tv != *td) {
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memprintf(err, "overwriting 'timeout %s' which was already specified", name);
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retval = 1;
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}
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else if (warn) {
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if (!already_warned(warn)) {
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memprintf(err, "the '%s' directive is now deprecated in favor of 'timeout %s', and will not be supported in future versions.",
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args[0], name);
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retval = 1;
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}
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}
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if (*args[2] != 0) {
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memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]);
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retval = -1;
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}
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*tv = MS_TO_TICKS(timeout);
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return retval;
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}
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/* This function parses a "rate-limit" statement in a proxy section. It returns
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* -1 if there is any error, 1 for a warning, otherwise zero. If it does not
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* return zero, it will write an error or warning message into a preallocated
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* buffer returned at <err>. The function must be called with <args> pointing
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* to the first command line word, with <proxy> pointing to the proxy being
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* parsed, and <defpx> to the default proxy or NULL.
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*/
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static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy,
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struct proxy *defpx, const char *file, int line,
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char **err)
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{
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int retval, cap;
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char *res;
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unsigned int *tv = NULL;
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unsigned int *td = NULL;
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unsigned int val;
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retval = 0;
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if (strcmp(args[1], "sessions") == 0) {
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tv = &proxy->fe_sps_lim;
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td = &defpx->fe_sps_lim;
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cap = PR_CAP_FE;
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}
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else {
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memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]);
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return -1;
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}
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if (*args[2] == 0) {
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memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]);
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return -1;
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}
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val = strtoul(args[2], &res, 0);
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if (*res) {
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memprintf(err, "'%s %s' : unexpected character '%c' in integer value '%s'", args[0], args[1], *res, args[2]);
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return -1;
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}
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if (!(proxy->cap & cap)) {
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memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability",
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args[0], args[1], proxy_type_str(proxy), proxy->id,
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(cap & PR_CAP_BE) ? "backend" : "frontend");
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retval = 1;
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}
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else if (defpx && *tv != *td) {
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memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]);
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retval = 1;
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}
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*tv = val;
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return retval;
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}
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/* This function parses a "max-keep-alive-queue" statement in a proxy section.
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* It returns -1 if there is any error, 1 for a warning, otherwise zero. If it
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* does not return zero, it will write an error or warning message into a
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* preallocated buffer returned at <err>. The function must be called with
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* <args> pointing to the first command line word, with <proxy> pointing to
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* the proxy being parsed, and <defpx> to the default proxy or NULL.
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*/
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static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy,
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struct proxy *defpx, const char *file, int line,
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char **err)
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{
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int retval;
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char *res;
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unsigned int val;
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retval = 0;
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if (*args[1] == 0) {
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memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]);
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return -1;
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}
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val = strtol(args[1], &res, 0);
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if (*res) {
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memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]);
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return -1;
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}
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if (!(proxy->cap & PR_CAP_BE)) {
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memprintf(err, "%s will be ignored because %s '%s' has no backend capability",
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args[0], proxy_type_str(proxy), proxy->id);
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retval = 1;
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}
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/* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */
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proxy->max_ka_queue = val + 1;
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return retval;
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}
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/* This function parses a "declare" statement in a proxy section. It returns -1
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* if there is any error, 1 for warning, otherwise 0. If it does not return zero,
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* it will write an error or warning message into a preallocated buffer returned
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* at <err>. The function must be called with <args> pointing to the first command
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* line word, with <proxy> pointing to the proxy being parsed, and <defpx> to the
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* default proxy or NULL.
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*/
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static int proxy_parse_declare(char **args, int section, struct proxy *curpx,
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struct proxy *defpx, const char *file, int line,
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char **err)
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{
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/* Capture keyword wannot be declared in a default proxy. */
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if (curpx == defpx) {
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memprintf(err, "'%s' not available in default section", args[0]);
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return -1;
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}
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/* Capture keywork is only available in frontend. */
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if (!(curpx->cap & PR_CAP_FE)) {
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memprintf(err, "'%s' only available in frontend or listen section", args[0]);
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return -1;
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}
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/* Check mandatory second keyword. */
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if (!args[1] || !*args[1]) {
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memprintf(err, "'%s' needs a second keyword that specify the type of declaration ('capture')", args[0]);
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return -1;
|
|
}
|
|
|
|
/* Actually, declare is only available for declaring capture
|
|
* slot, but in the future it can declare maps or variables.
|
|
* So, this section permits to check and switch according with
|
|
* the second keyword.
|
|
*/
|
|
if (strcmp(args[1], "capture") == 0) {
|
|
char *error = NULL;
|
|
long len;
|
|
struct cap_hdr *hdr;
|
|
|
|
/* Check the next keyword. */
|
|
if (!args[2] || !*args[2] ||
|
|
(strcmp(args[2], "response") != 0 &&
|
|
strcmp(args[2], "request") != 0)) {
|
|
memprintf(err, "'%s %s' requires a direction ('request' or 'response')", args[0], args[1]);
|
|
return -1;
|
|
}
|
|
|
|
/* Check the 'len' keyword. */
|
|
if (!args[3] || !*args[3] || strcmp(args[3], "len") != 0) {
|
|
memprintf(err, "'%s %s' requires a capture length ('len')", args[0], args[1]);
|
|
return -1;
|
|
}
|
|
|
|
/* Check the length value. */
|
|
if (!args[4] || !*args[4]) {
|
|
memprintf(err, "'%s %s': 'len' requires a numeric value that represents the "
|
|
"capture length",
|
|
args[0], args[1]);
|
|
return -1;
|
|
}
|
|
|
|
/* convert the length value. */
|
|
len = strtol(args[4], &error, 10);
|
|
if (*error != '\0') {
|
|
memprintf(err, "'%s %s': cannot parse the length '%s'.",
|
|
args[0], args[1], args[3]);
|
|
return -1;
|
|
}
|
|
|
|
/* check length. */
|
|
if (len <= 0) {
|
|
memprintf(err, "length must be > 0");
|
|
return -1;
|
|
}
|
|
|
|
/* register the capture. */
|
|
hdr = calloc(1, sizeof(*hdr));
|
|
hdr->name = NULL; /* not a header capture */
|
|
hdr->namelen = 0;
|
|
hdr->len = len;
|
|
hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
|
|
|
|
if (strcmp(args[2], "request") == 0) {
|
|
hdr->next = curpx->req_cap;
|
|
hdr->index = curpx->nb_req_cap++;
|
|
curpx->req_cap = hdr;
|
|
}
|
|
if (strcmp(args[2], "response") == 0) {
|
|
hdr->next = curpx->rsp_cap;
|
|
hdr->index = curpx->nb_rsp_cap++;
|
|
curpx->rsp_cap = hdr;
|
|
}
|
|
return 0;
|
|
}
|
|
else {
|
|
memprintf(err, "unknown declaration type '%s' (supports 'capture')", args[1]);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* This function inserts proxy <px> into the tree of known proxies. The proxy's
|
|
* name is used as the storing key so it must already have been initialized.
|
|
*/
|
|
void proxy_store_name(struct proxy *px)
|
|
{
|
|
px->conf.by_name.key = px->id;
|
|
ebis_insert(&proxy_by_name, &px->conf.by_name);
|
|
}
|
|
|
|
/* Returns a pointer to the first proxy matching capabilities <cap> and id
|
|
* <id>. NULL is returned if no match is found. If <table> is non-zero, it
|
|
* only considers proxies having a table.
|
|
*/
|
|
struct proxy *proxy_find_by_id(int id, int cap, int table)
|
|
{
|
|
struct eb32_node *n;
|
|
|
|
for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) {
|
|
struct proxy *px = container_of(n, struct proxy, conf.id);
|
|
|
|
if (px->uuid != id)
|
|
break;
|
|
|
|
if ((px->cap & cap) != cap)
|
|
continue;
|
|
|
|
if (table && !px->table.size)
|
|
continue;
|
|
|
|
return px;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Returns a pointer to the first proxy matching either name <name>, or id
|
|
* <name> if <name> begins with a '#'. NULL is returned if no match is found.
|
|
* If <table> is non-zero, it only considers proxies having a table.
|
|
*/
|
|
struct proxy *proxy_find_by_name(const char *name, int cap, int table)
|
|
{
|
|
struct proxy *curproxy;
|
|
|
|
if (*name == '#') {
|
|
curproxy = proxy_find_by_id(atoi(name + 1), cap, table);
|
|
if (curproxy)
|
|
return curproxy;
|
|
}
|
|
else {
|
|
struct ebpt_node *node;
|
|
|
|
for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) {
|
|
curproxy = container_of(node, struct proxy, conf.by_name);
|
|
|
|
if (strcmp(curproxy->id, name) != 0)
|
|
break;
|
|
|
|
if ((curproxy->cap & cap) != cap)
|
|
continue;
|
|
|
|
if (table && !curproxy->table.size)
|
|
continue;
|
|
|
|
return curproxy;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Finds the best match for a proxy with capabilities <cap>, name <name> and id
|
|
* <id>. At most one of <id> or <name> may be different provided that <cap> is
|
|
* valid. Either <id> or <name> may be left unspecified (0). The purpose is to
|
|
* find a proxy based on some information from a previous configuration, across
|
|
* reloads or during information exchange between peers.
|
|
*
|
|
* Names are looked up first if present, then IDs are compared if present. In
|
|
* case of an inexact match whatever is forced in the configuration has
|
|
* precedence in the following order :
|
|
* - 1) forced ID (proves a renaming / change of proxy type)
|
|
* - 2) proxy name+type (may indicate a move if ID differs)
|
|
* - 3) automatic ID+type (may indicate a renaming)
|
|
*
|
|
* Depending on what is found, we can end up in the following situations :
|
|
*
|
|
* name id cap | possible causes
|
|
* -------------+-----------------
|
|
* -- -- -- | nothing found
|
|
* -- -- ok | nothing found
|
|
* -- ok -- | proxy deleted, ID points to next one
|
|
* -- ok ok | proxy renamed, or deleted with ID pointing to next one
|
|
* ok -- -- | proxy deleted, but other half with same name still here (before)
|
|
* ok -- ok | proxy's ID changed (proxy moved in the config file)
|
|
* ok ok -- | proxy deleted, but other half with same name still here (after)
|
|
* ok ok ok | perfect match
|
|
*
|
|
* Upon return if <diff> is not NULL, it is zeroed then filled with up to 3 bits :
|
|
* - PR_FBM_MISMATCH_ID : proxy was found but ID differs
|
|
* (and ID was not zero)
|
|
* - PR_FBM_MISMATCH_NAME : proxy was found by ID but name differs
|
|
* (and name was not NULL)
|
|
* - PR_FBM_MISMATCH_PROXYTYPE : a proxy of different type was found with
|
|
* the same name and/or id
|
|
*
|
|
* Only a valid proxy is returned. If capabilities do not match, NULL is
|
|
* returned. The caller can check <diff> to report detailed warnings / errors,
|
|
* and decide whether or not to use what was found.
|
|
*/
|
|
struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff)
|
|
{
|
|
struct proxy *byname;
|
|
struct proxy *byid;
|
|
|
|
if (!name && !id)
|
|
return NULL;
|
|
|
|
if (diff)
|
|
*diff = 0;
|
|
|
|
byname = byid = NULL;
|
|
|
|
if (name) {
|
|
byname = proxy_find_by_name(name, cap, 0);
|
|
if (byname && (!id || byname->uuid == id))
|
|
return byname;
|
|
}
|
|
|
|
/* remaining possibilities :
|
|
* - name not set
|
|
* - name set but not found
|
|
* - name found, but ID doesn't match.
|
|
*/
|
|
if (id) {
|
|
byid = proxy_find_by_id(id, cap, 0);
|
|
if (byid) {
|
|
if (byname) {
|
|
/* id+type found, name+type found, but not all 3.
|
|
* ID wins only if forced, otherwise name wins.
|
|
*/
|
|
if (byid->options & PR_O_FORCED_ID) {
|
|
if (diff)
|
|
*diff |= PR_FBM_MISMATCH_NAME;
|
|
return byid;
|
|
}
|
|
else {
|
|
if (diff)
|
|
*diff |= PR_FBM_MISMATCH_ID;
|
|
return byname;
|
|
}
|
|
}
|
|
|
|
/* remaining possibilities :
|
|
* - name not set
|
|
* - name set but not found
|
|
*/
|
|
if (name && diff)
|
|
*diff |= PR_FBM_MISMATCH_NAME;
|
|
return byid;
|
|
}
|
|
|
|
/* ID not found */
|
|
if (byname) {
|
|
if (diff)
|
|
*diff |= PR_FBM_MISMATCH_ID;
|
|
return byname;
|
|
}
|
|
}
|
|
|
|
/* All remaining possibilities will lead to NULL. If we can report more
|
|
* detailed information to the caller about changed types and/or name,
|
|
* we'll do it. For example, we could detect that "listen foo" was
|
|
* split into "frontend foo_ft" and "backend foo_bk" if IDs are forced.
|
|
* - name not set, ID not found
|
|
* - name not found, ID not set
|
|
* - name not found, ID not found
|
|
*/
|
|
if (!diff)
|
|
return NULL;
|
|
|
|
if (name) {
|
|
byname = proxy_find_by_name(name, 0, 0);
|
|
if (byname && (!id || byname->uuid == id))
|
|
*diff |= PR_FBM_MISMATCH_PROXYTYPE;
|
|
}
|
|
|
|
if (id) {
|
|
byid = proxy_find_by_id(id, 0, 0);
|
|
if (byid) {
|
|
if (!name)
|
|
*diff |= PR_FBM_MISMATCH_PROXYTYPE; /* only type changed */
|
|
else if (byid->options & PR_O_FORCED_ID)
|
|
*diff |= PR_FBM_MISMATCH_NAME | PR_FBM_MISMATCH_PROXYTYPE; /* name and type changed */
|
|
/* otherwise it's a different proxy that was returned */
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* This function finds a server with matching name within selected proxy.
|
|
* It also checks if there are more matching servers with
|
|
* requested name as this often leads into unexpected situations.
|
|
*/
|
|
|
|
struct server *findserver(const struct proxy *px, const char *name) {
|
|
|
|
struct server *cursrv, *target = NULL;
|
|
|
|
if (!px)
|
|
return NULL;
|
|
|
|
for (cursrv = px->srv; cursrv; cursrv = cursrv->next) {
|
|
if (strcmp(cursrv->id, name))
|
|
continue;
|
|
|
|
if (!target) {
|
|
target = cursrv;
|
|
continue;
|
|
}
|
|
|
|
ha_alert("Refusing to use duplicated server '%s' found in proxy: %s!\n",
|
|
name, px->id);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
return target;
|
|
}
|
|
|
|
/* This function checks that the designated proxy has no http directives
|
|
* enabled. It will output a warning if there are, and will fix some of them.
|
|
* It returns the number of fatal errors encountered. This should be called
|
|
* at the end of the configuration parsing if the proxy is not in http mode.
|
|
* The <file> argument is used to construct the error message.
|
|
*/
|
|
int proxy_cfg_ensure_no_http(struct proxy *curproxy)
|
|
{
|
|
if (curproxy->cookie_name != NULL) {
|
|
ha_warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n",
|
|
proxy_type_str(curproxy), curproxy->id);
|
|
}
|
|
if (curproxy->rsp_exp != NULL) {
|
|
ha_warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
|
|
proxy_type_str(curproxy), curproxy->id);
|
|
}
|
|
if (curproxy->req_exp != NULL) {
|
|
ha_warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n",
|
|
proxy_type_str(curproxy), curproxy->id);
|
|
}
|
|
if (curproxy->monitor_uri != NULL) {
|
|
ha_warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n",
|
|
proxy_type_str(curproxy), curproxy->id);
|
|
}
|
|
if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) {
|
|
curproxy->lbprm.algo &= ~BE_LB_ALGO;
|
|
curproxy->lbprm.algo |= BE_LB_ALGO_RR;
|
|
ha_warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n",
|
|
proxy_type_str(curproxy), curproxy->id);
|
|
}
|
|
if (curproxy->to_log & (LW_REQ | LW_RESP)) {
|
|
curproxy->to_log &= ~(LW_REQ | LW_RESP);
|
|
ha_warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n",
|
|
curproxy->conf.lfs_file, curproxy->conf.lfs_line,
|
|
proxy_type_str(curproxy), curproxy->id);
|
|
}
|
|
if (curproxy->conf.logformat_string == default_http_log_format ||
|
|
curproxy->conf.logformat_string == clf_http_log_format) {
|
|
/* Note: we don't change the directive's file:line number */
|
|
curproxy->conf.logformat_string = default_tcp_log_format;
|
|
ha_warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n",
|
|
curproxy->conf.lfs_file, curproxy->conf.lfs_line,
|
|
proxy_type_str(curproxy), curproxy->id);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Perform the most basic initialization of a proxy :
|
|
* memset(), list_init(*), reset_timeouts(*).
|
|
* Any new proxy or peer should be initialized via this function.
|
|
*/
|
|
void init_new_proxy(struct proxy *p)
|
|
{
|
|
memset(p, 0, sizeof(struct proxy));
|
|
p->obj_type = OBJ_TYPE_PROXY;
|
|
p->pendconns = EB_ROOT;
|
|
LIST_INIT(&p->acl);
|
|
LIST_INIT(&p->http_req_rules);
|
|
LIST_INIT(&p->http_res_rules);
|
|
LIST_INIT(&p->block_rules);
|
|
LIST_INIT(&p->redirect_rules);
|
|
LIST_INIT(&p->mon_fail_cond);
|
|
LIST_INIT(&p->switching_rules);
|
|
LIST_INIT(&p->server_rules);
|
|
LIST_INIT(&p->persist_rules);
|
|
LIST_INIT(&p->sticking_rules);
|
|
LIST_INIT(&p->storersp_rules);
|
|
LIST_INIT(&p->tcp_req.inspect_rules);
|
|
LIST_INIT(&p->tcp_rep.inspect_rules);
|
|
LIST_INIT(&p->tcp_req.l4_rules);
|
|
LIST_INIT(&p->tcp_req.l5_rules);
|
|
LIST_INIT(&p->req_add);
|
|
LIST_INIT(&p->rsp_add);
|
|
LIST_INIT(&p->listener_queue);
|
|
LIST_INIT(&p->logsrvs);
|
|
LIST_INIT(&p->logformat);
|
|
LIST_INIT(&p->logformat_sd);
|
|
LIST_INIT(&p->format_unique_id);
|
|
LIST_INIT(&p->conf.bind);
|
|
LIST_INIT(&p->conf.listeners);
|
|
LIST_INIT(&p->conf.args.list);
|
|
LIST_INIT(&p->tcpcheck_rules);
|
|
LIST_INIT(&p->filter_configs);
|
|
|
|
/* Timeouts are defined as -1 */
|
|
proxy_reset_timeouts(p);
|
|
p->tcp_rep.inspect_delay = TICK_ETERNITY;
|
|
|
|
/* initial uuid is unassigned (-1) */
|
|
p->uuid = -1;
|
|
|
|
HA_SPIN_INIT(&p->lock);
|
|
}
|
|
|
|
/*
|
|
* This function creates all proxy sockets. It should be done very early,
|
|
* typically before privileges are dropped. The sockets will be registered
|
|
* but not added to any fd_set, in order not to loose them across the fork().
|
|
* The proxies also start in READY state because they all have their listeners
|
|
* bound.
|
|
*
|
|
* Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
|
|
* Retryable errors will only be printed if <verbose> is not zero.
|
|
*/
|
|
int start_proxies(int verbose)
|
|
{
|
|
struct proxy *curproxy;
|
|
struct listener *listener;
|
|
int lerr, err = ERR_NONE;
|
|
int pxerr;
|
|
char msg[100];
|
|
|
|
for (curproxy = proxies_list; curproxy != NULL; curproxy = curproxy->next) {
|
|
if (curproxy->state != PR_STNEW)
|
|
continue; /* already initialized */
|
|
|
|
pxerr = 0;
|
|
list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
|
|
if (listener->state != LI_ASSIGNED)
|
|
continue; /* already started */
|
|
|
|
lerr = listener->proto->bind(listener, msg, sizeof(msg));
|
|
|
|
/* errors are reported if <verbose> is set or if they are fatal */
|
|
if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) {
|
|
if (lerr & ERR_ALERT)
|
|
ha_alert("Starting %s %s: %s\n",
|
|
proxy_type_str(curproxy), curproxy->id, msg);
|
|
else if (lerr & ERR_WARN)
|
|
ha_warning("Starting %s %s: %s\n",
|
|
proxy_type_str(curproxy), curproxy->id, msg);
|
|
}
|
|
|
|
err |= lerr;
|
|
if (lerr & (ERR_ABORT | ERR_FATAL)) {
|
|
pxerr |= 1;
|
|
break;
|
|
}
|
|
else if (lerr & ERR_CODE) {
|
|
pxerr |= 1;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!pxerr) {
|
|
curproxy->state = PR_STREADY;
|
|
send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id);
|
|
}
|
|
|
|
if (err & ERR_ABORT)
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
/*
|
|
* This is the proxy management task. It enables proxies when there are enough
|
|
* free streams, or stops them when the table is full. It is designed to be
|
|
* called as a task which is woken up upon stopping or when rate limiting must
|
|
* be enforced.
|
|
*/
|
|
struct task *manage_proxy(struct task *t, void *context, unsigned short state)
|
|
{
|
|
struct proxy *p = context;
|
|
int next = TICK_ETERNITY;
|
|
unsigned int wait;
|
|
|
|
/* We should periodically try to enable listeners waiting for a
|
|
* global resource here.
|
|
*/
|
|
|
|
/* first, let's check if we need to stop the proxy */
|
|
if (unlikely(stopping && p->state != PR_STSTOPPED)) {
|
|
int t;
|
|
t = tick_remain(now_ms, p->stop_time);
|
|
if (t == 0) {
|
|
ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
|
|
p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
|
|
send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
|
|
p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn);
|
|
stop_proxy(p);
|
|
/* try to free more memory */
|
|
pool_gc(NULL);
|
|
}
|
|
else {
|
|
next = tick_first(next, p->stop_time);
|
|
}
|
|
}
|
|
|
|
/* If the proxy holds a stick table, we need to purge all unused
|
|
* entries. These are all the ones in the table with ref_cnt == 0
|
|
* and all the ones in the pool used to allocate new entries. Any
|
|
* entry attached to an existing stream waiting for a store will
|
|
* be in neither list. Any entry being dumped will have ref_cnt > 0.
|
|
* However we protect tables that are being synced to peers.
|
|
*/
|
|
if (unlikely(stopping && p->state == PR_STSTOPPED && p->table.current)) {
|
|
if (!p->table.syncing) {
|
|
stktable_trash_oldest(&p->table, p->table.current);
|
|
pool_gc(NULL);
|
|
}
|
|
if (p->table.current) {
|
|
/* some entries still remain, let's recheck in one second */
|
|
next = tick_first(next, tick_add(now_ms, 1000));
|
|
}
|
|
}
|
|
|
|
/* the rest below is just for frontends */
|
|
if (!(p->cap & PR_CAP_FE))
|
|
goto out;
|
|
|
|
/* check the various reasons we may find to block the frontend */
|
|
if (unlikely(p->feconn >= p->maxconn)) {
|
|
if (p->state == PR_STREADY)
|
|
p->state = PR_STFULL;
|
|
goto out;
|
|
}
|
|
|
|
/* OK we have no reason to block, so let's unblock if we were blocking */
|
|
if (p->state == PR_STFULL)
|
|
p->state = PR_STREADY;
|
|
|
|
if (p->fe_sps_lim &&
|
|
(wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) {
|
|
/* we're blocking because a limit was reached on the number of
|
|
* requests/s on the frontend. We want to re-check ASAP, which
|
|
* means in 1 ms before estimated expiration date, because the
|
|
* timer will have settled down.
|
|
*/
|
|
next = tick_first(next, tick_add(now_ms, wait));
|
|
goto out;
|
|
}
|
|
|
|
/* The proxy is not limited so we can re-enable any waiting listener */
|
|
if (!LIST_ISEMPTY(&p->listener_queue))
|
|
dequeue_all_listeners(&p->listener_queue);
|
|
out:
|
|
t->expire = next;
|
|
task_queue(t);
|
|
return t;
|
|
}
|
|
|
|
|
|
static int proxy_parse_hard_stop_after(char **args, int section_type, struct proxy *curpx,
|
|
struct proxy *defpx, const char *file, int line,
|
|
char **err)
|
|
{
|
|
const char *res;
|
|
|
|
if (!*args[1]) {
|
|
memprintf(err, "'%s' expects <time> as argument.\n", args[0]);
|
|
return -1;
|
|
}
|
|
res = parse_time_err(args[1], &global.hard_stop_after, TIME_UNIT_MS);
|
|
if (res) {
|
|
memprintf(err, "unexpected character '%c' in argument to <%s>.\n", *res, args[0]);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct task *hard_stop(struct task *t, void *context, unsigned short state)
|
|
{
|
|
struct proxy *p;
|
|
struct stream *s;
|
|
|
|
if (killed) {
|
|
ha_warning("Some tasks resisted to hard-stop, exiting now.\n");
|
|
send_log(NULL, LOG_WARNING, "Some tasks resisted to hard-stop, exiting now.\n");
|
|
/* Do some cleanup and explicitly quit */
|
|
deinit();
|
|
exit(0);
|
|
}
|
|
|
|
ha_warning("soft-stop running for too long, performing a hard-stop.\n");
|
|
send_log(NULL, LOG_WARNING, "soft-stop running for too long, performing a hard-stop.\n");
|
|
p = proxies_list;
|
|
while (p) {
|
|
if ((p->cap & PR_CAP_FE) && (p->feconn > 0)) {
|
|
ha_warning("Proxy %s hard-stopped (%d remaining conns will be closed).\n",
|
|
p->id, p->feconn);
|
|
send_log(p, LOG_WARNING, "Proxy %s hard-stopped (%d remaining conns will be closed).\n",
|
|
p->id, p->feconn);
|
|
}
|
|
p = p->next;
|
|
}
|
|
list_for_each_entry(s, &streams, list) {
|
|
stream_shutdown(s, SF_ERR_KILLED);
|
|
}
|
|
|
|
killed = 1;
|
|
t->expire = tick_add(now_ms, MS_TO_TICKS(1000));
|
|
return t;
|
|
}
|
|
|
|
/*
|
|
* this function disables health-check servers so that the process will quickly be ignored
|
|
* by load balancers. Note that if a proxy was already in the PAUSED state, then its grace
|
|
* time will not be used since it would already not listen anymore to the socket.
|
|
*/
|
|
void soft_stop(void)
|
|
{
|
|
struct proxy *p;
|
|
struct peers *prs;
|
|
struct task *task;
|
|
|
|
stopping = 1;
|
|
if (tick_isset(global.hard_stop_after)) {
|
|
task = task_new(MAX_THREADS_MASK);
|
|
if (task) {
|
|
task->process = hard_stop;
|
|
task_schedule(task, tick_add(now_ms, global.hard_stop_after));
|
|
}
|
|
else {
|
|
ha_alert("out of memory trying to allocate the hard-stop task.\n");
|
|
}
|
|
}
|
|
p = proxies_list;
|
|
tv_update_date(0,1); /* else, the old time before select will be used */
|
|
while (p) {
|
|
/* Zombie proxy, let's close the file descriptors */
|
|
if (p->state == PR_STSTOPPED &&
|
|
!LIST_ISEMPTY(&p->conf.listeners) &&
|
|
LIST_ELEM(p->conf.listeners.n,
|
|
struct listener *, by_fe)->state >= LI_ZOMBIE) {
|
|
struct listener *l;
|
|
list_for_each_entry(l, &p->conf.listeners, by_fe) {
|
|
if (l->state >= LI_ZOMBIE)
|
|
close(l->fd);
|
|
l->state = LI_INIT;
|
|
}
|
|
}
|
|
|
|
if (p->state != PR_STSTOPPED) {
|
|
ha_warning("Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace);
|
|
send_log(p, LOG_WARNING, "Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace);
|
|
p->stop_time = tick_add(now_ms, p->grace);
|
|
|
|
/* Note: do not wake up stopped proxies' task nor their tables'
|
|
* tasks as these ones might point to already released entries.
|
|
*/
|
|
if (p->table.size && p->table.sync_task)
|
|
task_wakeup(p->table.sync_task, TASK_WOKEN_MSG);
|
|
|
|
if (p->task)
|
|
task_wakeup(p->task, TASK_WOKEN_MSG);
|
|
}
|
|
p = p->next;
|
|
}
|
|
|
|
prs = cfg_peers;
|
|
while (prs) {
|
|
if (prs->peers_fe)
|
|
stop_proxy(prs->peers_fe);
|
|
prs = prs->next;
|
|
}
|
|
/* signal zero is used to broadcast the "stopping" event */
|
|
signal_handler(0);
|
|
}
|
|
|
|
|
|
/* Temporarily disables listening on all of the proxy's listeners. Upon
|
|
* success, the proxy enters the PR_PAUSED state. If disabling at least one
|
|
* listener returns an error, then the proxy state is set to PR_STERROR
|
|
* because we don't know how to resume from this. The function returns 0
|
|
* if it fails, or non-zero on success.
|
|
*/
|
|
int pause_proxy(struct proxy *p)
|
|
{
|
|
struct listener *l;
|
|
|
|
if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR ||
|
|
p->state == PR_STSTOPPED || p->state == PR_STPAUSED)
|
|
return 1;
|
|
|
|
ha_warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
|
|
send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id);
|
|
|
|
list_for_each_entry(l, &p->conf.listeners, by_fe) {
|
|
if (!pause_listener(l))
|
|
p->state = PR_STERROR;
|
|
}
|
|
|
|
if (p->state == PR_STERROR) {
|
|
ha_warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
|
|
send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id);
|
|
return 0;
|
|
}
|
|
|
|
p->state = PR_STPAUSED;
|
|
return 1;
|
|
}
|
|
|
|
/* This function makes the proxy unusable, but keeps the listening sockets
|
|
* opened, so that if any process requests them, we are able to serve them.
|
|
* This should only be called early, before we started accepting requests.
|
|
*/
|
|
void zombify_proxy(struct proxy *p)
|
|
{
|
|
struct listener *l;
|
|
struct listener *first_to_listen = NULL;
|
|
|
|
list_for_each_entry(l, &p->conf.listeners, by_fe) {
|
|
enum li_state oldstate = l->state;
|
|
|
|
unbind_listener_no_close(l);
|
|
if (l->state >= LI_ASSIGNED) {
|
|
delete_listener(l);
|
|
}
|
|
/*
|
|
* Pretend we're still up and running so that the fd
|
|
* will be sent if asked.
|
|
*/
|
|
l->state = LI_ZOMBIE;
|
|
if (!first_to_listen && oldstate >= LI_LISTEN)
|
|
first_to_listen = l;
|
|
}
|
|
/* Quick hack : at stop time, to know we have to close the sockets
|
|
* despite the proxy being marked as stopped, make the first listener
|
|
* of the listener list an active one, so that we don't have to
|
|
* parse the whole list to be sure.
|
|
*/
|
|
if (first_to_listen && LIST_ELEM(p->conf.listeners.n,
|
|
struct listener *, by_fe) != first_to_listen) {
|
|
LIST_DEL(&l->by_fe);
|
|
LIST_ADD(&p->conf.listeners, &l->by_fe);
|
|
}
|
|
|
|
p->state = PR_STSTOPPED;
|
|
}
|
|
|
|
/*
|
|
* This function completely stops a proxy and releases its listeners. It has
|
|
* to be called when going down in order to release the ports so that another
|
|
* process may bind to them. It must also be called on disabled proxies at the
|
|
* end of start-up. If all listeners are closed, the proxy is set to the
|
|
* PR_STSTOPPED state.
|
|
*/
|
|
void stop_proxy(struct proxy *p)
|
|
{
|
|
struct listener *l;
|
|
int nostop = 0;
|
|
|
|
list_for_each_entry(l, &p->conf.listeners, by_fe) {
|
|
if (l->options & LI_O_NOSTOP) {
|
|
HA_ATOMIC_ADD(&unstoppable_jobs, 1);
|
|
nostop = 1;
|
|
continue;
|
|
}
|
|
unbind_listener(l);
|
|
if (l->state >= LI_ASSIGNED) {
|
|
delete_listener(l);
|
|
}
|
|
}
|
|
if (!nostop)
|
|
p->state = PR_STSTOPPED;
|
|
}
|
|
|
|
/* This function resumes listening on the specified proxy. It scans all of its
|
|
* listeners and tries to enable them all. If any of them fails, the proxy is
|
|
* put back to the paused state. It returns 1 upon success, or zero if an error
|
|
* is encountered.
|
|
*/
|
|
int resume_proxy(struct proxy *p)
|
|
{
|
|
struct listener *l;
|
|
int fail;
|
|
|
|
if (p->state != PR_STPAUSED)
|
|
return 1;
|
|
|
|
ha_warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
|
|
send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id);
|
|
|
|
fail = 0;
|
|
list_for_each_entry(l, &p->conf.listeners, by_fe) {
|
|
if (!resume_listener(l)) {
|
|
int port;
|
|
|
|
port = get_host_port(&l->addr);
|
|
if (port) {
|
|
ha_warning("Port %d busy while trying to enable %s %s.\n",
|
|
port, proxy_cap_str(p->cap), p->id);
|
|
send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n",
|
|
port, proxy_cap_str(p->cap), p->id);
|
|
}
|
|
else {
|
|
ha_warning("Bind on socket %d busy while trying to enable %s %s.\n",
|
|
l->luid, proxy_cap_str(p->cap), p->id);
|
|
send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n",
|
|
l->luid, proxy_cap_str(p->cap), p->id);
|
|
}
|
|
|
|
/* Another port might have been enabled. Let's stop everything. */
|
|
fail = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
p->state = PR_STREADY;
|
|
if (fail) {
|
|
pause_proxy(p);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* This function temporarily disables listening so that another new instance
|
|
* can start listening. It is designed to be called upon reception of a
|
|
* SIGTTOU, after which either a SIGUSR1 can be sent to completely stop
|
|
* the proxy, or a SIGTTIN can be sent to listen again.
|
|
*/
|
|
void pause_proxies(void)
|
|
{
|
|
int err;
|
|
struct proxy *p;
|
|
struct peers *prs;
|
|
|
|
err = 0;
|
|
p = proxies_list;
|
|
tv_update_date(0,1); /* else, the old time before select will be used */
|
|
while (p) {
|
|
err |= !pause_proxy(p);
|
|
p = p->next;
|
|
}
|
|
|
|
prs = cfg_peers;
|
|
while (prs) {
|
|
if (prs->peers_fe)
|
|
err |= !pause_proxy(prs->peers_fe);
|
|
prs = prs->next;
|
|
}
|
|
|
|
if (err) {
|
|
ha_warning("Some proxies refused to pause, performing soft stop now.\n");
|
|
send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n");
|
|
soft_stop();
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* This function reactivates listening. This can be used after a call to
|
|
* sig_pause(), for example when a new instance has failed starting up.
|
|
* It is designed to be called upon reception of a SIGTTIN.
|
|
*/
|
|
void resume_proxies(void)
|
|
{
|
|
int err;
|
|
struct proxy *p;
|
|
struct peers *prs;
|
|
|
|
err = 0;
|
|
p = proxies_list;
|
|
tv_update_date(0,1); /* else, the old time before select will be used */
|
|
while (p) {
|
|
err |= !resume_proxy(p);
|
|
p = p->next;
|
|
}
|
|
|
|
prs = cfg_peers;
|
|
while (prs) {
|
|
if (prs->peers_fe)
|
|
err |= !resume_proxy(prs->peers_fe);
|
|
prs = prs->next;
|
|
}
|
|
|
|
if (err) {
|
|
ha_warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
|
|
send_log(p, LOG_WARNING, "Some proxies refused to resume, a restart is probably needed to resume safe operations.\n");
|
|
}
|
|
}
|
|
|
|
/* Set current stream's backend to <be>. Nothing is done if the
|
|
* stream already had a backend assigned, which is indicated by
|
|
* s->flags & SF_BE_ASSIGNED.
|
|
* All flags, stats and counters which need be updated are updated.
|
|
* Returns 1 if done, 0 in case of internal error, eg: lack of resource.
|
|
*/
|
|
int stream_set_backend(struct stream *s, struct proxy *be)
|
|
{
|
|
if (s->flags & SF_BE_ASSIGNED)
|
|
return 1;
|
|
|
|
if (flt_set_stream_backend(s, be) < 0)
|
|
return 0;
|
|
|
|
s->be = be;
|
|
HA_ATOMIC_UPDATE_MAX(&be->be_counters.conn_max,
|
|
HA_ATOMIC_ADD(&be->beconn, 1));
|
|
proxy_inc_be_ctr(be);
|
|
|
|
/* assign new parameters to the stream from the new backend */
|
|
s->si[1].flags &= ~SI_FL_INDEP_STR;
|
|
if (be->options2 & PR_O2_INDEPSTR)
|
|
s->si[1].flags |= SI_FL_INDEP_STR;
|
|
|
|
if (tick_isset(be->timeout.serverfin))
|
|
s->si[1].hcto = be->timeout.serverfin;
|
|
|
|
/* We want to enable the backend-specific analysers except those which
|
|
* were already run as part of the frontend/listener. Note that it would
|
|
* be more reliable to store the list of analysers that have been run,
|
|
* but what we do here is OK for now.
|
|
*/
|
|
s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0);
|
|
|
|
/* If the target backend requires HTTP processing, we have to allocate
|
|
* the HTTP transaction and hdr_idx if we did not have one.
|
|
*/
|
|
if (unlikely(!s->txn && be->http_needed)) {
|
|
if (unlikely(!http_alloc_txn(s)))
|
|
return 0; /* not enough memory */
|
|
|
|
/* and now initialize the HTTP transaction state */
|
|
http_init_txn(s);
|
|
}
|
|
|
|
/* Be sure to filter request headers if the backend is an HTTP proxy and
|
|
* if there are filters attached to the stream. */
|
|
if (s->be->mode == PR_MODE_HTTP && HAS_FILTERS(s))
|
|
s->req.analysers |= AN_REQ_FLT_HTTP_HDRS;
|
|
|
|
if (s->txn) {
|
|
if (be->options2 & PR_O2_RSPBUG_OK)
|
|
s->txn->rsp.err_pos = -1; /* let buggy responses pass */
|
|
|
|
/* If we chain to an HTTP backend running a different HTTP mode, we
|
|
* have to re-adjust the desired keep-alive/close mode to accommodate
|
|
* both the frontend's and the backend's modes.
|
|
*/
|
|
if (strm_fe(s)->mode == PR_MODE_HTTP && be->mode == PR_MODE_HTTP &&
|
|
((strm_fe(s)->options & PR_O_HTTP_MODE) != (be->options & PR_O_HTTP_MODE)))
|
|
http_adjust_conn_mode(s, s->txn, &s->txn->req);
|
|
|
|
/* If an LB algorithm needs to access some pre-parsed body contents,
|
|
* we must not start to forward anything until the connection is
|
|
* confirmed otherwise we'll lose the pointer to these data and
|
|
* prevent the hash from being doable again after a redispatch.
|
|
*/
|
|
if (be->mode == PR_MODE_HTTP &&
|
|
(be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM))
|
|
s->txn->req.flags |= HTTP_MSGF_WAIT_CONN;
|
|
|
|
/* we may request to parse a request body */
|
|
if ((be->options & PR_O_WREQ_BODY) &&
|
|
(s->txn->req.body_len || (s->txn->req.flags & HTTP_MSGF_TE_CHNK)))
|
|
s->req.analysers |= AN_REQ_HTTP_BODY;
|
|
}
|
|
|
|
s->flags |= SF_BE_ASSIGNED;
|
|
if (be->options2 & PR_O2_NODELAY) {
|
|
s->req.flags |= CF_NEVER_WAIT;
|
|
s->res.flags |= CF_NEVER_WAIT;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Capture a bad request or response and archive it in the proxy's structure.
|
|
* It is relatively protocol-agnostic so it requires that a number of elements
|
|
* are passed :
|
|
* - <proxy> is the proxy where the error was detected and where the snapshot
|
|
* needs to be stored
|
|
* - <is_back> indicates that the error happened when receiving the response
|
|
* - <other_end> is a pointer to the proxy on the other side when known
|
|
* - <target> is the target of the connection, usually a server or a proxy
|
|
* - <sess> is the session which experienced the error
|
|
* - <ctx> may be NULL or should contain any info relevant to the protocol
|
|
* - <buf> is the buffer containing the offending data
|
|
* - <buf_ofs> is the position of this buffer's input data in the input
|
|
* stream, starting at zero. It may be passed as zero if unknown.
|
|
* - <buf_out> is the portion of <buf->data> which was already forwarded and
|
|
* which precedes the buffer's input. The buffer's input starts at
|
|
* buf->head + buf_out.
|
|
* - <err_pos> is the pointer to the faulty byte in the buffer's input.
|
|
* - <show> is the callback to use to display <ctx>. It may be NULL.
|
|
*/
|
|
void proxy_capture_error(struct proxy *proxy, int is_back,
|
|
struct proxy *other_end, enum obj_type *target,
|
|
const struct session *sess,
|
|
const struct buffer *buf, long buf_ofs,
|
|
unsigned int buf_out, unsigned int err_pos,
|
|
const union error_snapshot_ctx *ctx,
|
|
void (*show)(struct buffer *, const struct error_snapshot *))
|
|
{
|
|
struct error_snapshot *es;
|
|
unsigned int buf_len;
|
|
int len1, len2;
|
|
unsigned int ev_id;
|
|
|
|
ev_id = HA_ATOMIC_XADD(&error_snapshot_id, 1);
|
|
|
|
buf_len = b_data(buf) - buf_out;
|
|
|
|
es = malloc(sizeof(*es) + buf_len);
|
|
if (!es)
|
|
return;
|
|
|
|
es->buf_len = buf_len;
|
|
es->ev_id = ev_id;
|
|
|
|
len1 = b_size(buf) - buf_len;
|
|
if (len1 > buf_len)
|
|
len1 = buf_len;
|
|
|
|
if (len1) {
|
|
memcpy(es->buf, b_peek(buf, buf_out), len1);
|
|
len2 = buf_len - len1;
|
|
if (len2)
|
|
memcpy(es->buf + len1, b_orig(buf), len2);
|
|
}
|
|
|
|
es->buf_err = err_pos;
|
|
es->when = date; // user-visible date
|
|
es->srv = objt_server(target);
|
|
es->oe = other_end;
|
|
if (objt_conn(sess->origin))
|
|
es->src = __objt_conn(sess->origin)->addr.from;
|
|
else
|
|
memset(&es->src, 0, sizeof(es->src));
|
|
|
|
es->buf_wrap = b_wrap(buf) - b_peek(buf, buf_out);
|
|
es->buf_out = buf_out;
|
|
es->buf_ofs = buf_ofs;
|
|
|
|
/* be sure to indicate the offset of the first IN byte */
|
|
if (es->buf_ofs >= es->buf_len)
|
|
es->buf_ofs -= es->buf_len;
|
|
else
|
|
es->buf_ofs = 0;
|
|
|
|
/* protocol-specific part now */
|
|
if (ctx)
|
|
es->ctx = *ctx;
|
|
else
|
|
memset(&es->ctx, 0, sizeof(es->ctx));
|
|
es->show = show;
|
|
|
|
/* note: we still lock since we have to be certain that nobody is
|
|
* dumping the output while we free.
|
|
*/
|
|
HA_SPIN_LOCK(PROXY_LOCK, &proxy->lock);
|
|
if (is_back) {
|
|
es = HA_ATOMIC_XCHG(&proxy->invalid_rep, es);
|
|
} else {
|
|
es = HA_ATOMIC_XCHG(&proxy->invalid_req, es);
|
|
}
|
|
free(es);
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &proxy->lock);
|
|
}
|
|
|
|
/* Config keywords below */
|
|
|
|
static struct cfg_kw_list cfg_kws = {ILH, {
|
|
{ CFG_GLOBAL, "hard-stop-after", proxy_parse_hard_stop_after },
|
|
{ CFG_LISTEN, "timeout", proxy_parse_timeout },
|
|
{ CFG_LISTEN, "clitimeout", proxy_parse_timeout },
|
|
{ CFG_LISTEN, "contimeout", proxy_parse_timeout },
|
|
{ CFG_LISTEN, "srvtimeout", proxy_parse_timeout },
|
|
{ CFG_LISTEN, "rate-limit", proxy_parse_rate_limit },
|
|
{ CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue },
|
|
{ CFG_LISTEN, "declare", proxy_parse_declare },
|
|
{ 0, NULL, NULL },
|
|
}};
|
|
|
|
INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
|
|
|
|
/* Expects to find a frontend named <arg> and returns it, otherwise displays various
|
|
* adequate error messages and returns NULL. This function is designed to be used by
|
|
* functions requiring a frontend on the CLI.
|
|
*/
|
|
struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg)
|
|
{
|
|
struct proxy *px;
|
|
|
|
if (!*arg) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "A frontend name is expected.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return NULL;
|
|
}
|
|
|
|
px = proxy_fe_by_name(arg);
|
|
if (!px) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "No such frontend.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return NULL;
|
|
}
|
|
return px;
|
|
}
|
|
|
|
/* Expects to find a backend named <arg> and returns it, otherwise displays various
|
|
* adequate error messages and returns NULL. This function is designed to be used by
|
|
* functions requiring a frontend on the CLI.
|
|
*/
|
|
struct proxy *cli_find_backend(struct appctx *appctx, const char *arg)
|
|
{
|
|
struct proxy *px;
|
|
|
|
if (!*arg) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "A backend name is expected.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return NULL;
|
|
}
|
|
|
|
px = proxy_be_by_name(arg);
|
|
if (!px) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "No such backend.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return NULL;
|
|
}
|
|
return px;
|
|
}
|
|
|
|
|
|
/* parse a "show servers" CLI line, returns 0 if it wants to start the dump or
|
|
* 1 if it stops immediately. If an argument is specified, it will set the proxy
|
|
* pointer into cli.p0 and its ID into cli.i0.
|
|
*/
|
|
static int cli_parse_show_servers(char **args, char *payload, struct appctx *appctx, void *private)
|
|
{
|
|
struct proxy *px;
|
|
|
|
/* check if a backend name has been provided */
|
|
if (*args[3]) {
|
|
/* read server state from local file */
|
|
px = proxy_be_by_name(args[3]);
|
|
|
|
if (!px) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "Can't find backend.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
appctx->ctx.cli.p0 = px;
|
|
appctx->ctx.cli.i0 = px->uuid;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* dumps server state information into <buf> for all the servers found in backend cli.p0.
|
|
* These information are all the parameters which may change during HAProxy runtime.
|
|
* By default, we only export to the last known server state file format.
|
|
* These information can be used at next startup to recover same level of server state.
|
|
* It uses the proxy pointer from cli.p0, the proxy's id from cli.i0 and the server's
|
|
* pointer from cli.p1.
|
|
*/
|
|
static int dump_servers_state(struct stream_interface *si, struct buffer *buf)
|
|
{
|
|
struct appctx *appctx = __objt_appctx(si->end);
|
|
struct proxy *px = appctx->ctx.cli.p0;
|
|
struct server *srv;
|
|
char srv_addr[INET6_ADDRSTRLEN + 1];
|
|
time_t srv_time_since_last_change;
|
|
int bk_f_forced_id, srv_f_forced_id;
|
|
char *srvrecord;
|
|
|
|
/* we don't want to report any state if the backend is not enabled on this process */
|
|
if (px->bind_proc && !(px->bind_proc & pid_bit))
|
|
return 1;
|
|
|
|
if (!appctx->ctx.cli.p1)
|
|
appctx->ctx.cli.p1 = px->srv;
|
|
|
|
for (; appctx->ctx.cli.p1 != NULL; appctx->ctx.cli.p1 = srv->next) {
|
|
srv = appctx->ctx.cli.p1;
|
|
srv_addr[0] = '\0';
|
|
|
|
switch (srv->addr.ss_family) {
|
|
case AF_INET:
|
|
inet_ntop(srv->addr.ss_family, &((struct sockaddr_in *)&srv->addr)->sin_addr,
|
|
srv_addr, INET_ADDRSTRLEN + 1);
|
|
break;
|
|
case AF_INET6:
|
|
inet_ntop(srv->addr.ss_family, &((struct sockaddr_in6 *)&srv->addr)->sin6_addr,
|
|
srv_addr, INET6_ADDRSTRLEN + 1);
|
|
break;
|
|
default:
|
|
memcpy(srv_addr, "-\0", 2);
|
|
break;
|
|
}
|
|
srv_time_since_last_change = now.tv_sec - srv->last_change;
|
|
bk_f_forced_id = px->options & PR_O_FORCED_ID ? 1 : 0;
|
|
srv_f_forced_id = srv->flags & SRV_F_FORCED_ID ? 1 : 0;
|
|
|
|
srvrecord = NULL;
|
|
if (srv->srvrq && srv->srvrq->name)
|
|
srvrecord = srv->srvrq->name;
|
|
|
|
chunk_appendf(buf,
|
|
"%d %s "
|
|
"%d %s %s "
|
|
"%d %d %d %d %ld "
|
|
"%d %d %d %d %d "
|
|
"%d %d %s %u %s"
|
|
"\n",
|
|
px->uuid, px->id,
|
|
srv->puid, srv->id, srv_addr,
|
|
srv->cur_state, srv->cur_admin, srv->uweight, srv->iweight, (long int)srv_time_since_last_change,
|
|
srv->check.status, srv->check.result, srv->check.health, srv->check.state, srv->agent.state,
|
|
bk_f_forced_id, srv_f_forced_id, srv->hostname ? srv->hostname : "-", srv->svc_port,
|
|
srvrecord ? srvrecord : "-");
|
|
if (ci_putchk(si_ic(si), &trash) == -1) {
|
|
si_rx_room_blk(si);
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Parses backend list or simply use backend name provided by the user to return
|
|
* states of servers to stdout. It dumps proxy <cli.p0> and stops if <cli.i0> is
|
|
* non-null.
|
|
*/
|
|
static int cli_io_handler_servers_state(struct appctx *appctx)
|
|
{
|
|
struct stream_interface *si = appctx->owner;
|
|
struct proxy *curproxy;
|
|
|
|
chunk_reset(&trash);
|
|
|
|
if (appctx->st2 == STAT_ST_INIT) {
|
|
if (!appctx->ctx.cli.p0)
|
|
appctx->ctx.cli.p0 = proxies_list;
|
|
appctx->st2 = STAT_ST_HEAD;
|
|
}
|
|
|
|
if (appctx->st2 == STAT_ST_HEAD) {
|
|
chunk_printf(&trash, "%d\n# %s\n", SRV_STATE_FILE_VERSION, SRV_STATE_FILE_FIELD_NAMES);
|
|
if (ci_putchk(si_ic(si), &trash) == -1) {
|
|
si_rx_room_blk(si);
|
|
return 0;
|
|
}
|
|
appctx->st2 = STAT_ST_INFO;
|
|
}
|
|
|
|
/* STAT_ST_INFO */
|
|
for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
|
|
curproxy = appctx->ctx.cli.p0;
|
|
/* servers are only in backends */
|
|
if (curproxy->cap & PR_CAP_BE) {
|
|
if (!dump_servers_state(si, &trash))
|
|
return 0;
|
|
}
|
|
/* only the selected proxy is dumped */
|
|
if (appctx->ctx.cli.i0)
|
|
break;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Parses backend list and simply report backend names. It keeps the proxy
|
|
* pointer in cli.p0.
|
|
*/
|
|
static int cli_io_handler_show_backend(struct appctx *appctx)
|
|
{
|
|
struct stream_interface *si = appctx->owner;
|
|
struct proxy *curproxy;
|
|
|
|
chunk_reset(&trash);
|
|
|
|
if (!appctx->ctx.cli.p0) {
|
|
chunk_printf(&trash, "# name\n");
|
|
if (ci_putchk(si_ic(si), &trash) == -1) {
|
|
si_rx_room_blk(si);
|
|
return 0;
|
|
}
|
|
appctx->ctx.cli.p0 = proxies_list;
|
|
}
|
|
|
|
for (; appctx->ctx.cli.p0 != NULL; appctx->ctx.cli.p0 = curproxy->next) {
|
|
curproxy = appctx->ctx.cli.p0;
|
|
|
|
/* looking for backends only */
|
|
if (!(curproxy->cap & PR_CAP_BE))
|
|
continue;
|
|
|
|
/* we don't want to list a backend which is bound to this process */
|
|
if (curproxy->bind_proc && !(curproxy->bind_proc & pid_bit))
|
|
continue;
|
|
|
|
chunk_appendf(&trash, "%s\n", curproxy->id);
|
|
if (ci_putchk(si_ic(si), &trash) == -1) {
|
|
si_rx_room_blk(si);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Parses the "enable dynamic-cookies backend" directive, it always returns 1.
|
|
*
|
|
* Grabs the proxy lock and each server's lock.
|
|
*/
|
|
static int cli_parse_enable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
|
|
{
|
|
struct proxy *px;
|
|
struct server *s;
|
|
|
|
if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
|
|
return 1;
|
|
|
|
px = cli_find_backend(appctx, args[3]);
|
|
if (!px)
|
|
return 1;
|
|
|
|
HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
|
|
|
|
px->ck_opts |= PR_CK_DYNAMIC;
|
|
|
|
for (s = px->srv; s != NULL; s = s->next) {
|
|
HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
|
|
srv_set_dyncookie(s);
|
|
HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
|
|
}
|
|
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Parses the "disable dynamic-cookies backend" directive, it always returns 1.
|
|
*
|
|
* Grabs the proxy lock and each server's lock.
|
|
*/
|
|
static int cli_parse_disable_dyncookie_backend(char **args, char *payload, struct appctx *appctx, void *private)
|
|
{
|
|
struct proxy *px;
|
|
struct server *s;
|
|
|
|
if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
|
|
return 1;
|
|
|
|
px = cli_find_backend(appctx, args[3]);
|
|
if (!px)
|
|
return 1;
|
|
|
|
HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
|
|
|
|
px->ck_opts &= ~PR_CK_DYNAMIC;
|
|
|
|
for (s = px->srv; s != NULL; s = s->next) {
|
|
HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
|
|
if (!(s->flags & SRV_F_COOKIESET)) {
|
|
free(s->cookie);
|
|
s->cookie = NULL;
|
|
}
|
|
HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
|
|
}
|
|
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Parses the "set dynamic-cookie-key backend" directive, it always returns 1.
|
|
*
|
|
* Grabs the proxy lock and each server's lock.
|
|
*/
|
|
static int cli_parse_set_dyncookie_key_backend(char **args, char *payload, struct appctx *appctx, void *private)
|
|
{
|
|
struct proxy *px;
|
|
struct server *s;
|
|
char *newkey;
|
|
|
|
if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
|
|
return 1;
|
|
|
|
px = cli_find_backend(appctx, args[3]);
|
|
if (!px)
|
|
return 1;
|
|
|
|
if (!*args[4]) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "String value expected.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
|
|
newkey = strdup(args[4]);
|
|
if (!newkey) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "Failed to allocate memory.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
|
|
HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
|
|
|
|
free(px->dyncookie_key);
|
|
px->dyncookie_key = newkey;
|
|
|
|
for (s = px->srv; s != NULL; s = s->next) {
|
|
HA_SPIN_LOCK(SERVER_LOCK, &s->lock);
|
|
srv_set_dyncookie(s);
|
|
HA_SPIN_UNLOCK(SERVER_LOCK, &s->lock);
|
|
}
|
|
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Parses the "set maxconn frontend" directive, it always returns 1.
|
|
*
|
|
* Grabs the proxy lock.
|
|
*/
|
|
static int cli_parse_set_maxconn_frontend(char **args, char *payload, struct appctx *appctx, void *private)
|
|
{
|
|
struct proxy *px;
|
|
struct listener *l;
|
|
int v;
|
|
|
|
if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
|
|
return 1;
|
|
|
|
px = cli_find_frontend(appctx, args[3]);
|
|
if (!px)
|
|
return 1;
|
|
|
|
if (!*args[4]) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "Integer value expected.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
|
|
v = atoi(args[4]);
|
|
if (v < 0) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "Value out of range.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
|
|
/* OK, the value is fine, so we assign it to the proxy and to all of
|
|
* its listeners. The blocked ones will be dequeued.
|
|
*/
|
|
HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
|
|
|
|
px->maxconn = v;
|
|
list_for_each_entry(l, &px->conf.listeners, by_fe) {
|
|
l->maxconn = v;
|
|
if (l->state == LI_FULL)
|
|
resume_listener(l);
|
|
}
|
|
|
|
if (px->maxconn > px->feconn && !LIST_ISEMPTY(&px->listener_queue))
|
|
dequeue_all_listeners(&px->listener_queue);
|
|
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Parses the "shutdown frontend" directive, it always returns 1.
|
|
*
|
|
* Grabs the proxy lock.
|
|
*/
|
|
static int cli_parse_shutdown_frontend(char **args, char *payload, struct appctx *appctx, void *private)
|
|
{
|
|
struct proxy *px;
|
|
|
|
if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
|
|
return 1;
|
|
|
|
px = cli_find_frontend(appctx, args[2]);
|
|
if (!px)
|
|
return 1;
|
|
|
|
if (px->state == PR_STSTOPPED) {
|
|
appctx->ctx.cli.severity = LOG_NOTICE;
|
|
appctx->ctx.cli.msg = "Frontend was already shut down.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
|
|
ha_warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
|
|
px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
|
|
send_log(px, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n",
|
|
px->id, px->fe_counters.cum_conn, px->be_counters.cum_conn);
|
|
|
|
HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
|
|
stop_proxy(px);
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Parses the "disable frontend" directive, it always returns 1.
|
|
*
|
|
* Grabs the proxy lock.
|
|
*/
|
|
static int cli_parse_disable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
|
|
{
|
|
struct proxy *px;
|
|
int ret;
|
|
|
|
if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
|
|
return 1;
|
|
|
|
px = cli_find_frontend(appctx, args[2]);
|
|
if (!px)
|
|
return 1;
|
|
|
|
if (px->state == PR_STSTOPPED) {
|
|
appctx->ctx.cli.severity = LOG_NOTICE;
|
|
appctx->ctx.cli.msg = "Frontend was previously shut down, cannot disable.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
|
|
if (px->state == PR_STPAUSED) {
|
|
appctx->ctx.cli.severity = LOG_NOTICE;
|
|
appctx->ctx.cli.msg = "Frontend is already disabled.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
|
|
HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
|
|
ret = pause_proxy(px);
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
|
|
|
|
if (!ret) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "Failed to pause frontend, check logs for precise cause.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Parses the "enable frontend" directive, it always returns 1.
|
|
*
|
|
* Grabs the proxy lock.
|
|
*/
|
|
static int cli_parse_enable_frontend(char **args, char *payload, struct appctx *appctx, void *private)
|
|
{
|
|
struct proxy *px;
|
|
int ret;
|
|
|
|
if (!cli_has_level(appctx, ACCESS_LVL_ADMIN))
|
|
return 1;
|
|
|
|
px = cli_find_frontend(appctx, args[2]);
|
|
if (!px)
|
|
return 1;
|
|
|
|
if (px->state == PR_STSTOPPED) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "Frontend was previously shut down, cannot enable.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
|
|
if (px->state != PR_STPAUSED) {
|
|
appctx->ctx.cli.severity = LOG_NOTICE;
|
|
appctx->ctx.cli.msg = "Frontend is already enabled.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
|
|
HA_SPIN_LOCK(PROXY_LOCK, &px->lock);
|
|
ret = resume_proxy(px);
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &px->lock);
|
|
|
|
if (!ret) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "Failed to resume frontend, check logs for precise cause (port conflict?).\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
|
|
* now.
|
|
*/
|
|
static int cli_parse_show_errors(char **args, char *payload, struct appctx *appctx, void *private)
|
|
{
|
|
if (!cli_has_level(appctx, ACCESS_LVL_OPER))
|
|
return 1;
|
|
|
|
if (*args[2]) {
|
|
struct proxy *px;
|
|
|
|
px = proxy_find_by_name(args[2], 0, 0);
|
|
if (px)
|
|
appctx->ctx.errors.iid = px->uuid;
|
|
else
|
|
appctx->ctx.errors.iid = atoi(args[2]);
|
|
|
|
if (!appctx->ctx.errors.iid) {
|
|
appctx->ctx.cli.severity = LOG_ERR;
|
|
appctx->ctx.cli.msg = "No such proxy.\n";
|
|
appctx->st0 = CLI_ST_PRINT;
|
|
return 1;
|
|
}
|
|
}
|
|
else
|
|
appctx->ctx.errors.iid = -1; // dump all proxies
|
|
|
|
appctx->ctx.errors.flag = 0;
|
|
if (strcmp(args[3], "request") == 0)
|
|
appctx->ctx.errors.flag |= 4; // ignore response
|
|
else if (strcmp(args[3], "response") == 0)
|
|
appctx->ctx.errors.flag |= 2; // ignore request
|
|
appctx->ctx.errors.px = NULL;
|
|
return 0;
|
|
}
|
|
|
|
/* This function dumps all captured errors onto the stream interface's
|
|
* read buffer. It returns 0 if the output buffer is full and it needs
|
|
* to be called again, otherwise non-zero.
|
|
*/
|
|
static int cli_io_handler_show_errors(struct appctx *appctx)
|
|
{
|
|
struct stream_interface *si = appctx->owner;
|
|
extern const char *monthname[12];
|
|
|
|
if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
|
|
return 1;
|
|
|
|
chunk_reset(&trash);
|
|
|
|
if (!appctx->ctx.errors.px) {
|
|
/* the function had not been called yet, let's prepare the
|
|
* buffer for a response.
|
|
*/
|
|
struct tm tm;
|
|
|
|
get_localtime(date.tv_sec, &tm);
|
|
chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
|
|
tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
|
|
tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
|
|
error_snapshot_id);
|
|
|
|
if (ci_putchk(si_ic(si), &trash) == -1)
|
|
goto cant_send;
|
|
|
|
appctx->ctx.errors.px = proxies_list;
|
|
appctx->ctx.errors.bol = 0;
|
|
appctx->ctx.errors.ptr = -1;
|
|
}
|
|
|
|
/* we have two inner loops here, one for the proxy, the other one for
|
|
* the buffer.
|
|
*/
|
|
while (appctx->ctx.errors.px) {
|
|
struct error_snapshot *es;
|
|
|
|
HA_SPIN_LOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
|
|
|
|
if ((appctx->ctx.errors.flag & 1) == 0) {
|
|
es = appctx->ctx.errors.px->invalid_req;
|
|
if (appctx->ctx.errors.flag & 2) // skip req
|
|
goto next;
|
|
}
|
|
else {
|
|
es = appctx->ctx.errors.px->invalid_rep;
|
|
if (appctx->ctx.errors.flag & 4) // skip resp
|
|
goto next;
|
|
}
|
|
|
|
if (!es)
|
|
goto next;
|
|
|
|
if (appctx->ctx.errors.iid >= 0 &&
|
|
appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
|
|
es->oe->uuid != appctx->ctx.errors.iid)
|
|
goto next;
|
|
|
|
if (appctx->ctx.errors.ptr < 0) {
|
|
/* just print headers now */
|
|
|
|
char pn[INET6_ADDRSTRLEN];
|
|
struct tm tm;
|
|
int port;
|
|
|
|
get_localtime(es->when.tv_sec, &tm);
|
|
chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
|
|
tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
|
|
tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
|
|
|
|
switch (addr_to_str(&es->src, pn, sizeof(pn))) {
|
|
case AF_INET:
|
|
case AF_INET6:
|
|
port = get_host_port(&es->src);
|
|
break;
|
|
default:
|
|
port = 0;
|
|
}
|
|
|
|
switch (appctx->ctx.errors.flag & 1) {
|
|
case 0:
|
|
chunk_appendf(&trash,
|
|
" frontend %s (#%d): invalid request\n"
|
|
" backend %s (#%d)",
|
|
appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
|
|
(es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
|
|
(es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
|
|
break;
|
|
case 1:
|
|
chunk_appendf(&trash,
|
|
" backend %s (#%d): invalid response\n"
|
|
" frontend %s (#%d)",
|
|
appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
|
|
es->oe->id, es->oe->uuid);
|
|
break;
|
|
}
|
|
|
|
chunk_appendf(&trash,
|
|
", server %s (#%d), event #%u, src %s:%d\n"
|
|
" buffer starts at %llu (including %u out), %u free,\n"
|
|
" len %u, wraps at %u, error at position %u\n",
|
|
es->srv ? es->srv->id : "<NONE>",
|
|
es->srv ? es->srv->puid : -1,
|
|
es->ev_id, pn, port,
|
|
es->buf_ofs, es->buf_out,
|
|
global.tune.bufsize - es->buf_out - es->buf_len,
|
|
es->buf_len, es->buf_wrap, es->buf_err);
|
|
|
|
if (es->show)
|
|
es->show(&trash, es);
|
|
|
|
chunk_appendf(&trash, " \n");
|
|
|
|
if (ci_putchk(si_ic(si), &trash) == -1)
|
|
goto cant_send_unlock;
|
|
|
|
appctx->ctx.errors.ptr = 0;
|
|
appctx->ctx.errors.ev_id = es->ev_id;
|
|
}
|
|
|
|
if (appctx->ctx.errors.ev_id != es->ev_id) {
|
|
/* the snapshot changed while we were dumping it */
|
|
chunk_appendf(&trash,
|
|
" WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
|
|
if (ci_putchk(si_ic(si), &trash) == -1)
|
|
goto cant_send_unlock;
|
|
|
|
goto next;
|
|
}
|
|
|
|
/* OK, ptr >= 0, so we have to dump the current line */
|
|
while (appctx->ctx.errors.ptr < es->buf_len && appctx->ctx.errors.ptr < global.tune.bufsize) {
|
|
int newptr;
|
|
int newline;
|
|
|
|
newline = appctx->ctx.errors.bol;
|
|
newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->buf_len, &newline, appctx->ctx.errors.ptr);
|
|
if (newptr == appctx->ctx.errors.ptr)
|
|
goto cant_send_unlock;
|
|
|
|
if (ci_putchk(si_ic(si), &trash) == -1)
|
|
goto cant_send_unlock;
|
|
|
|
appctx->ctx.errors.ptr = newptr;
|
|
appctx->ctx.errors.bol = newline;
|
|
};
|
|
next:
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
|
|
appctx->ctx.errors.bol = 0;
|
|
appctx->ctx.errors.ptr = -1;
|
|
appctx->ctx.errors.flag ^= 1;
|
|
if (!(appctx->ctx.errors.flag & 1))
|
|
appctx->ctx.errors.px = appctx->ctx.errors.px->next;
|
|
}
|
|
|
|
/* dump complete */
|
|
return 1;
|
|
|
|
cant_send_unlock:
|
|
HA_SPIN_UNLOCK(PROXY_LOCK, &appctx->ctx.errors.px->lock);
|
|
cant_send:
|
|
si_rx_room_blk(si);
|
|
return 0;
|
|
}
|
|
|
|
/* register cli keywords */
|
|
static struct cli_kw_list cli_kws = {{ },{
|
|
{ { "disable", "frontend", NULL }, "disable frontend : temporarily disable specific frontend", cli_parse_disable_frontend, NULL, NULL },
|
|
{ { "enable", "frontend", NULL }, "enable frontend : re-enable specific frontend", cli_parse_enable_frontend, NULL, NULL },
|
|
{ { "set", "maxconn", "frontend", NULL }, "set maxconn frontend : change a frontend's maxconn setting", cli_parse_set_maxconn_frontend, NULL },
|
|
{ { "show","servers", "state", NULL }, "show servers state [id]: dump volatile server information (for backend <id>)", cli_parse_show_servers, cli_io_handler_servers_state },
|
|
{ { "show", "backend", NULL }, "show backend : list backends in the current running config", NULL, cli_io_handler_show_backend },
|
|
{ { "shutdown", "frontend", NULL }, "shutdown frontend : stop a specific frontend", cli_parse_shutdown_frontend, NULL, NULL },
|
|
{ { "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 },
|
|
{ { "enable", "dynamic-cookie", "backend", NULL }, "enable dynamic-cookie backend : enable dynamic cookies on a specific backend", cli_parse_enable_dyncookie_backend, NULL },
|
|
{ { "disable", "dynamic-cookie", "backend", NULL }, "disable dynamic-cookie backend : disable dynamic cookies on a specific backend", cli_parse_disable_dyncookie_backend, NULL },
|
|
{ { "show", "errors", NULL }, "show errors : report last request and response errors for each proxy", cli_parse_show_errors, cli_io_handler_show_errors, NULL },
|
|
{{},}
|
|
}};
|
|
|
|
INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-indent-level: 8
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|