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30a4f2a8 | 1 | /* |
f70aedc4 | 2 | * Copyright (C) 1996-2021 The Squid Software Foundation and contributors |
e25c139f | 3 | * |
bbc27441 AJ |
4 | * Squid software is distributed under GPLv2+ license and includes |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
30a4f2a8 | 7 | */ |
44a47c6e | 8 | |
bbc27441 AJ |
9 | /* DEBUG: section 01 Startup and Main Loop */ |
10 | ||
582c2af2 | 11 | #include "squid.h" |
450e0c10 | 12 | #include "AccessLogEntry.h" |
4eac3407 | 13 | //#include "acl/Acl.h" |
582c2af2 | 14 | #include "acl/Asn.h" |
4eac3407 | 15 | #include "acl/forward.h" |
50a43a49 | 16 | #include "anyp/UriScheme.h" |
5c112575 AJ |
17 | #include "auth/Config.h" |
18 | #include "auth/Gadgets.h" | |
ae578099 | 19 | #include "AuthReg.h" |
6d57128b | 20 | #include "base/RunnersRegistry.h" |
e0d28505 | 21 | #include "base/Subscription.h" |
3d93a84d | 22 | #include "base/TextException.h" |
fc54b8d2 | 23 | #include "cache_cf.h" |
3c670b50 | 24 | #include "CachePeer.h" |
fc54b8d2 FC |
25 | #include "carp.h" |
26 | #include "client_db.h" | |
27 | #include "client_side.h" | |
d841c88d | 28 | #include "comm.h" |
28bca1f7 | 29 | #include "CommandLine.h" |
62ee09ca | 30 | #include "ConfigParser.h" |
96c2bb61 | 31 | #include "CpuAffinity.h" |
582c2af2 | 32 | #include "DiskIO/DiskIOModule.h" |
4a3b98d7 | 33 | #include "dns/forward.h" |
aa839030 | 34 | #include "errorpage.h" |
a553a5a3 | 35 | #include "event.h" |
36 | #include "EventLoop.h" | |
62ee09ca | 37 | #include "ExternalACL.h" |
fc54b8d2 | 38 | #include "fd.h" |
31971e6a | 39 | #include "format/Token.h" |
fc54b8d2 | 40 | #include "fqdncache.h" |
602d9612 | 41 | #include "fs/Module.h" |
b3f7fd88 | 42 | #include "fs_io.h" |
eb13c21e | 43 | #include "FwdState.h" |
af69c635 | 44 | #include "globals.h" |
582c2af2 | 45 | #include "htcp.h" |
d3dddfb5 | 46 | #include "http/Stream.h" |
fc54b8d2 | 47 | #include "HttpHeader.h" |
582c2af2 FC |
48 | #include "HttpReply.h" |
49 | #include "icmp/IcmpSquid.h" | |
50 | #include "icmp/net_db.h" | |
e6ccf245 | 51 | #include "ICP.h" |
4daaf3cb | 52 | #include "ident/Ident.h" |
e99fa721 | 53 | #include "Instance.h" |
602d9612 | 54 | #include "ip/tools.h" |
10cefb7b | 55 | #include "ipc/Coordinator.h" |
582c2af2 | 56 | #include "ipc/Kids.h" |
10cefb7b | 57 | #include "ipc/Strand.h" |
602d9612 | 58 | #include "ipcache.h" |
b65ce00c | 59 | #include "mime.h" |
fc54b8d2 | 60 | #include "neighbors.h" |
d5f21615 | 61 | #include "parser/Tokenizer.h" |
28bca1f7 | 62 | #include "Parsing.h" |
582c2af2 | 63 | #include "pconn.h" |
fc54b8d2 FC |
64 | #include "peer_sourcehash.h" |
65 | #include "peer_userhash.h" | |
602d9612 | 66 | #include "PeerSelectState.h" |
582c2af2 | 67 | #include "profiler/Profiler.h" |
c548327a | 68 | #include "redirect.h" |
fc54b8d2 | 69 | #include "refresh.h" |
e99fa721 | 70 | #include "sbuf/Stream.h" |
d87f6b1d | 71 | #include "SBufStatsAction.h" |
bc94e5ca | 72 | #include "send-announce.h" |
4d5904f7 | 73 | #include "SquidConfig.h" |
985c86bc | 74 | #include "SquidTime.h" |
fc54b8d2 | 75 | #include "stat.h" |
e4f1fdae | 76 | #include "StatCounters.h" |
582c2af2 | 77 | #include "Store.h" |
2745fea5 | 78 | #include "store/Disks.h" |
602d9612 A |
79 | #include "store_log.h" |
80 | #include "StoreFileSystem.h" | |
602d9612 | 81 | #include "tools.h" |
b6b42084 | 82 | #include "unlinkd.h" |
fc54b8d2 FC |
83 | #include "wccp.h" |
84 | #include "wccp2.h" | |
cf3edd6f | 85 | #include "WinSvc.h" |
44a47c6e | 86 | |
582c2af2 FC |
87 | #if USE_ADAPTATION |
88 | #include "adaptation/Config.h" | |
89 | #endif | |
90 | #if USE_ECAP | |
91 | #include "adaptation/ecap/Config.h" | |
92 | #endif | |
93 | #if ICAP_CLIENT | |
94 | #include "adaptation/icap/Config.h" | |
95 | #include "adaptation/icap/icap_log.h" | |
96 | #endif | |
582c2af2 FC |
97 | #if USE_DELAY_POOLS |
98 | #include "ClientDelayConfig.h" | |
99 | #endif | |
100 | #if USE_DELAY_POOLS | |
101 | #include "DelayPools.h" | |
102 | #endif | |
57afc994 AR |
103 | #if USE_LOADABLE_MODULES |
104 | #include "LoadableModules.h" | |
105 | #endif | |
cb4f4424 | 106 | #if USE_OPENSSL |
95d2589c | 107 | #include "ssl/context_storage.h" |
602d9612 | 108 | #include "ssl/helper.h" |
95d2589c | 109 | #endif |
b958cb0f | 110 | #if ICAP_CLIENT |
26cc52cb | 111 | #include "adaptation/icap/Config.h" |
b958cb0f | 112 | #endif |
6e5db507 | 113 | #if USE_ECAP |
1f3c65fc | 114 | #include "adaptation/ecap/Config.h" |
6e5db507 | 115 | #endif |
b958cb0f AR |
116 | #if USE_ADAPTATION |
117 | #include "adaptation/Config.h" | |
118 | #endif | |
79039294 AR |
119 | #if USE_SQUID_ESI |
120 | #include "esi/Module.h" | |
121 | #endif | |
9c0a2256 FC |
122 | #if SQUID_SNMP |
123 | #include "snmp_core.h" | |
124 | #endif | |
7b5b7ba8 | 125 | |
1a30fdf5 | 126 | #include <cerrno> |
68dbbe5d AJ |
127 | #if HAVE_GETOPT_H |
128 | #include <getopt.h> | |
129 | #endif | |
25f98340 AJ |
130 | #if HAVE_PATHS_H |
131 | #include <paths.h> | |
132 | #endif | |
582c2af2 FC |
133 | #if HAVE_SYS_WAIT_H |
134 | #include <sys/wait.h> | |
135 | #endif | |
1a774556 | 136 | |
25f98340 | 137 | #if USE_WIN32_SERVICE |
1a774556 | 138 | #include <process.h> |
139 | ||
140 | static int opt_install_service = FALSE; | |
141 | static int opt_remove_service = FALSE; | |
1a774556 | 142 | static int opt_command_line = FALSE; |
82afb125 | 143 | void WIN32_svcstatusupdate(DWORD, DWORD); |
1a774556 | 144 | void WINAPI WIN32_svcHandler(DWORD); |
1a774556 | 145 | #endif |
146 | ||
cf2155f2 | 147 | static int opt_signal_service = FALSE; |
5e6d4736 | 148 | static char *opt_syslog_facility = NULL; |
f53969cc | 149 | static int icpPortNumOverride = 1; /* Want to detect "-u 0" */ |
e13ee7ad | 150 | static int configured_once = 0; |
30a4f2a8 | 151 | #if MALLOC_DBG |
4d64d74a | 152 | static int malloc_debug_level = 0; |
30a4f2a8 | 153 | #endif |
5cd39a10 | 154 | static volatile int do_reconfigure = 0; |
155 | static volatile int do_rotate = 0; | |
2681d383 | 156 | static volatile int do_shutdown = 0; |
00e2479d | 157 | static volatile int do_revive_kids = 0; |
24885773 | 158 | static volatile int shutdown_status = EXIT_SUCCESS; |
dbf55289 | 159 | static volatile int do_handle_stopped_child = 0; |
4d7add01 | 160 | |
a2c48c98 AR |
161 | static int RotateSignal = -1; |
162 | static int ReconfigureSignal = -1; | |
163 | static int ShutdownSignal = -1; | |
00e2479d | 164 | static int ReviveKidsSignal = -1; |
a2c48c98 | 165 | |
5cd39a10 | 166 | static void mainRotate(void); |
d71e4674 AR |
167 | static void mainReconfigureStart(void); |
168 | static void mainReconfigureFinish(void*); | |
f5b8bbc4 | 169 | static void mainInitialize(void); |
f5b8bbc4 | 170 | static void usage(void); |
28bca1f7 | 171 | static void mainHandleCommandLineOption(const int optId, const char *optValue); |
f5b8bbc4 | 172 | static void sendSignal(void); |
173 | static void serverConnectionsOpen(void); | |
d71e4674 | 174 | static void serverConnectionsClose(void); |
28bca1f7 | 175 | static void watch_child(const CommandLine &); |
85407535 | 176 | static void setEffectiveUser(void); |
8ff3fa2e | 177 | static void SquidShutdown(void); |
b6a2f15e | 178 | static void mainSetCwd(void); |
85407535 | 179 | |
7aa9bb3e | 180 | #if !_SQUID_WINDOWS_ |
e18d7fdc | 181 | static const char *squid_start_script = "squid_start"; |
b293c4d8 | 182 | #endif |
e18d7fdc | 183 | |
9bc73deb | 184 | #if TEST_ACCESS |
185 | #include "test_access.c" | |
186 | #endif | |
187 | ||
63be0a78 | 188 | /** temporary thunk across to the unrefactored store interface */ |
8ff3fa2e | 189 | |
190 | class StoreRootEngine : public AsyncEngine | |
191 | { | |
192 | ||
193 | public: | |
ced8def3 | 194 | int checkEvents(int) { |
8ff3fa2e | 195 | Store::Root().callback(); |
196 | return EVENT_IDLE; | |
197 | }; | |
198 | }; | |
199 | ||
9688b0ae | 200 | class SignalEngine: public AsyncEngine |
a553a5a3 | 201 | { |
202 | ||
203 | public: | |
dbf55289 CT |
204 | #if KILL_PARENT_OPT |
205 | SignalEngine(): parentKillNotified(false) { | |
206 | parentPid = getppid(); | |
207 | } | |
208 | #endif | |
209 | ||
9688b0ae | 210 | virtual int checkEvents(int timeout); |
a553a5a3 | 211 | |
212 | private: | |
0a720258 AR |
213 | static void StopEventLoop(void *) { |
214 | if (EventLoop::Running) | |
215 | EventLoop::Running->stop(); | |
a553a5a3 | 216 | } |
217 | ||
d442618d AJ |
218 | static void FinalShutdownRunners(void *) { |
219 | RunRegisteredHere(RegisteredRunner::endingShutdown); | |
220 | ||
221 | // XXX: this should be a Runner. | |
222 | #if USE_AUTH | |
223 | /* detach the auth components (only do this on full shutdown) */ | |
224 | Auth::Scheme::FreeAll(); | |
225 | #endif | |
226 | ||
227 | eventAdd("SquidTerminate", &StopEventLoop, NULL, 0, 1, false); | |
228 | } | |
229 | ||
9688b0ae | 230 | void doShutdown(time_t wait); |
dbf55289 CT |
231 | void handleStoppedChild(); |
232 | ||
233 | #if KILL_PARENT_OPT | |
234 | bool parentKillNotified; | |
235 | pid_t parentPid; | |
236 | #endif | |
a553a5a3 | 237 | }; |
238 | ||
9688b0ae | 239 | int |
ced8def3 | 240 | SignalEngine::checkEvents(int) |
a553a5a3 | 241 | { |
9688b0ae | 242 | PROF_start(SignalEngine_checkEvents); |
fc68f6b1 | 243 | |
39d48b4f AR |
244 | if (do_reconfigure) |
245 | mainReconfigureStart(); | |
246 | else if (do_rotate) | |
a553a5a3 | 247 | mainRotate(); |
39d48b4f | 248 | else if (do_shutdown) |
9688b0ae | 249 | doShutdown(do_shutdown > 0 ? (int) Config.shutdownLifetime : 0); |
39d48b4f | 250 | if (do_handle_stopped_child) |
dbf55289 | 251 | handleStoppedChild(); |
9688b0ae | 252 | PROF_stop(SignalEngine_checkEvents); |
253 | return EVENT_IDLE; | |
254 | } | |
a553a5a3 | 255 | |
39d48b4f AR |
256 | /// Decides whether the signal-controlled action X should be delayed, canceled, |
257 | /// or executed immediately. Clears do_X (via signalVar) as needed. | |
258 | static bool | |
259 | AvoidSignalAction(const char *description, volatile int &signalVar) | |
260 | { | |
261 | const char *avoiding = "delaying"; | |
262 | const char *currentEvent = "none"; | |
263 | if (shutting_down) { | |
264 | currentEvent = "shutdown"; | |
265 | avoiding = "canceling"; | |
b4db757f AJ |
266 | // do not avoid repeated shutdown signals |
267 | // which just means the user wants to skip/abort shutdown timeouts | |
268 | if (strcmp(currentEvent, description) == 0) | |
269 | return false; | |
39d48b4f AR |
270 | signalVar = 0; |
271 | } | |
272 | else if (!configured_once) | |
273 | currentEvent = "startup"; | |
274 | else if (reconfiguring) | |
275 | currentEvent = "reconfiguration"; | |
276 | else { | |
277 | signalVar = 0; | |
278 | return false; // do not avoid (i.e., execute immediately) | |
279 | // the caller may produce a signal-specific debugging message | |
280 | } | |
281 | ||
282 | debugs(1, DBG_IMPORTANT, avoiding << ' ' << description << | |
283 | " request during " << currentEvent); | |
284 | return true; | |
285 | } | |
286 | ||
9688b0ae | 287 | void |
288 | SignalEngine::doShutdown(time_t wait) | |
289 | { | |
39d48b4f AR |
290 | if (AvoidSignalAction("shutdown", do_shutdown)) |
291 | return; | |
292 | ||
e0236918 FC |
293 | debugs(1, DBG_IMPORTANT, "Preparing for shutdown after " << statCounter.client_http.requests << " requests"); |
294 | debugs(1, DBG_IMPORTANT, "Waiting " << wait << " seconds for active connections to finish"); | |
8ff3fa2e | 295 | |
dbf55289 CT |
296 | #if KILL_PARENT_OPT |
297 | if (!IamMasterProcess() && !parentKillNotified && ShutdownSignal > 0 && parentPid > 1) { | |
298 | debugs(1, DBG_IMPORTANT, "Killing master process, pid " << parentPid); | |
b69e9ffa AJ |
299 | if (kill(parentPid, ShutdownSignal) < 0) { |
300 | int xerrno = errno; | |
301 | debugs(1, DBG_IMPORTANT, "kill " << parentPid << ": " << xstrerr(xerrno)); | |
302 | } | |
dbf55289 CT |
303 | parentKillNotified = true; |
304 | } | |
305 | #endif | |
9688b0ae | 306 | |
dbf55289 CT |
307 | if (shutting_down) { |
308 | #if !KILL_PARENT_OPT | |
309 | // Already a shutdown signal has received and shutdown is in progress. | |
310 | // Shutdown as soon as possible. | |
311 | wait = 0; | |
9688b0ae | 312 | #endif |
5c634111 | 313 | } else { |
dbf55289 | 314 | shutting_down = 1; |
9688b0ae | 315 | |
dbf55289 CT |
316 | /* run the closure code which can be shared with reconfigure */ |
317 | serverConnectionsClose(); | |
dbf55289 CT |
318 | |
319 | RunRegisteredHere(RegisteredRunner::startShutdown); | |
320 | } | |
321 | ||
322 | #if USE_WIN32_SERVICE | |
5c634111 | 323 | WIN32_svcstatusupdate(SERVICE_STOP_PENDING, (wait + 1) * 1000); |
2f1431ea | 324 | #endif |
21b7990f | 325 | |
d442618d | 326 | eventAdd("SquidShutdown", &FinalShutdownRunners, this, (double) (wait + 1), 1, false); |
a553a5a3 | 327 | } |
328 | ||
dbf55289 CT |
329 | void |
330 | SignalEngine::handleStoppedChild() | |
331 | { | |
39d48b4f AR |
332 | // no AvoidSignalAction() call: This code can run at any time because it |
333 | // does not depend on Squid state. It does not need debugging because it | |
334 | // handles an "internal" signal, not an external/admin command. | |
335 | do_handle_stopped_child = 0; | |
dbf55289 CT |
336 | #if !_SQUID_WINDOWS_ |
337 | PidStatus status; | |
338 | pid_t pid; | |
339 | ||
340 | do { | |
341 | pid = WaitForAnyPid(status, WNOHANG); | |
342 | ||
343 | #if HAVE_SIGACTION | |
344 | ||
345 | } while (pid > 0); | |
346 | ||
347 | #else | |
348 | ||
5c634111 SM |
349 | } |
350 | while (pid > 0 || (pid < 0 && errno == EINTR)); | |
dbf55289 CT |
351 | #endif |
352 | #endif | |
353 | } | |
354 | ||
b8d8561b | 355 | static void |
0673c0ba | 356 | usage(void) |
ccff9601 | 357 | { |
0ee4272b | 358 | fprintf(stderr, |
68dbbe5d | 359 | "Usage: %s [-cdzCFNRVYX] [-n name] [-s | -l facility] [-f config-file] [-[au] port] [-k signal]" |
0e657244 | 360 | #if USE_WIN32_SERVICE |
cf2155f2 | 361 | "[-ir] [-O CommandLine]" |
0e657244 | 362 | #endif |
68dbbe5d AJ |
363 | "\n" |
364 | " -h | --help Print help message.\n" | |
365 | " -v | --version Print version details.\n" | |
cf2155f2 | 366 | "\n" |
62e76326 | 367 | " -a port Specify HTTP port number (default: %d).\n" |
368 | " -d level Write debugging to stderr also.\n" | |
369 | " -f file Use given config-file instead of\n" | |
370 | " %s\n" | |
0e657244 | 371 | #if USE_WIN32_SERVICE |
372 | " -i Installs as a Windows Service (see -n option).\n" | |
373 | #endif | |
98fcbb0e AJ |
374 | " -k reconfigure|rotate|shutdown|" |
375 | #ifdef SIGTTIN | |
376 | "restart|" | |
377 | #endif | |
378 | "interrupt|kill|debug|check|parse\n" | |
62e76326 | 379 | " Parse configuration file, then send signal to \n" |
380 | " running copy (except -k parse) and exit.\n" | |
cf2155f2 AJ |
381 | " -n name Specify service name to use for service operations\n" |
382 | " default is: " APP_SHORTNAME ".\n" | |
0e657244 | 383 | #if USE_WIN32_SERVICE |
0e657244 | 384 | " -r Removes a Windows Service (see -n option).\n" |
385 | #endif | |
5e6d4736 | 386 | " -s | -l facility\n" |
387 | " Enable logging to syslog.\n" | |
62e76326 | 388 | " -u port Specify ICP port number (default: %d), disable with 0.\n" |
04632397 | 389 | " -z Create missing swap directories and then exit.\n" |
62e76326 | 390 | " -C Do not catch fatal signals.\n" |
8eb28163 | 391 | " -D OBSOLETE. Scheduled for removal.\n" |
62e76326 | 392 | " -F Don't serve any requests until store is rebuilt.\n" |
d73c6e83 | 393 | " -N Master process runs in foreground and is a worker. No kids.\n" |
effda67e | 394 | " --foreground\n" |
d73c6e83 | 395 | " Master process runs in foreground and creates worker kids.\n" |
28bca1f7 EB |
396 | " --kid role-ID\n" |
397 | " Play a given SMP kid process role, with a given ID. Do not use\n" | |
398 | " this option. It is meant for the master process use only.\n" | |
0e657244 | 399 | #if USE_WIN32_SERVICE |
400 | " -O options\n" | |
401 | " Set Windows Service Command line options in Registry.\n" | |
402 | #endif | |
62e76326 | 403 | " -R Do not set REUSEADDR on port.\n" |
404 | " -S Double-check swap during rebuild.\n" | |
62e76326 | 405 | " -X Force full debugging.\n" |
406 | " -Y Only return UDP_HIT or UDP_MISS_NOFETCH during fast reload.\n", | |
23cf13da | 407 | APP_SHORTNAME, CACHE_HTTP_PORT, DEFAULT_CONFIG_FILE, CACHE_ICP_PORT); |
24885773 | 408 | exit(EXIT_FAILURE); |
ccff9601 | 409 | } |
410 | ||
28bca1f7 EB |
411 | /// CommandLine option IDs for --long options that lack a short (-x) equivalent |
412 | enum { | |
413 | // The absolute values do not matter except that the following values should | |
414 | // not be used: Values below 2 are for special getopt_long(3) use cases, and | |
415 | // values in the [33,126] range are reserved for short options (-x). | |
416 | optForeground = 2, | |
417 | optKid | |
418 | }; | |
090089c4 | 419 | |
28bca1f7 EB |
420 | // short options |
421 | // TODO: consider prefixing with ':' for better logging | |
422 | // (distinguish missing required argument cases) | |
423 | static const char *shortOpStr = | |
0e657244 | 424 | #if USE_WIN32_SERVICE |
28bca1f7 | 425 | "O:Vir" |
0e657244 | 426 | #endif |
28bca1f7 | 427 | "CDFNRSYXa:d:f:hk:m::n:sl:u:vz?"; |
62e76326 | 428 | |
28bca1f7 EB |
429 | // long options |
430 | static struct option squidOptions[] = { | |
431 | {"foreground", no_argument, 0, optForeground}, | |
432 | {"kid", required_argument, 0, optKid}, | |
433 | {"help", no_argument, 0, 'h'}, | |
434 | {"version", no_argument, 0, 'v'}, | |
435 | {0, 0, 0, 0} | |
436 | }; | |
62e76326 | 437 | |
28bca1f7 EB |
438 | // handle a command line parameter |
439 | static void | |
440 | mainHandleCommandLineOption(const int optId, const char *optValue) | |
441 | { | |
442 | switch (optId) { | |
443 | ||
444 | case 'C': | |
445 | /** \par C | |
446 | * Unset/disabel global option for catchign signals. opt_catch_signals */ | |
447 | opt_catch_signals = 0; | |
448 | break; | |
449 | ||
450 | case 'D': | |
451 | /** \par D | |
452 | * OBSOLETE: WAS: override to prevent optional startup DNS tests. */ | |
453 | debugs(1,DBG_CRITICAL, "WARNING: -D command-line option is obsolete."); | |
454 | break; | |
455 | ||
456 | case 'F': | |
457 | /** \par F | |
458 | * Set global option for foreground rebuild. opt_foreground_rebuild */ | |
459 | opt_foreground_rebuild = 1; | |
460 | break; | |
461 | ||
462 | case 'N': | |
463 | /** \par N | |
464 | * Set global option for 'no_daemon' mode. opt_no_daemon */ | |
465 | opt_no_daemon = 1; | |
466 | break; | |
62e76326 | 467 | |
28bca1f7 | 468 | #if USE_WIN32_SERVICE |
62e76326 | 469 | |
28bca1f7 EB |
470 | case 'O': |
471 | /** \par O | |
472 | * Set global option. opt_command_lin and WIN32_Command_Line */ | |
473 | opt_command_line = 1; | |
474 | WIN32_Command_Line = xstrdup(optValue); | |
475 | break; | |
476 | #endif | |
477 | ||
478 | case 'R': | |
479 | /** \par R | |
480 | * Unset/disable global option opt_reuseaddr */ | |
481 | opt_reuseaddr = 0; | |
482 | break; | |
483 | ||
484 | case 'S': | |
485 | /** \par S | |
486 | * Set global option opt_store_doublecheck */ | |
487 | opt_store_doublecheck = 1; | |
488 | break; | |
489 | ||
490 | case 'X': | |
491 | /** \par X | |
492 | * Force full debugging */ | |
493 | Debug::parseOptions("rotate=0 ALL,9"); | |
494 | Debug::override_X = 1; | |
495 | sigusr2_handle(SIGUSR2); | |
496 | break; | |
497 | ||
498 | case 'Y': | |
499 | /** \par Y | |
500 | * Set global option opt_reload_hit_only */ | |
501 | opt_reload_hit_only = 1; | |
502 | break; | |
63be0a78 | 503 | |
0e657244 | 504 | #if USE_WIN32_SERVICE |
505 | ||
28bca1f7 EB |
506 | case 'i': |
507 | /** \par i | |
508 | * Set global option opt_install_service (to TRUE) */ | |
509 | opt_install_service = TRUE; | |
510 | break; | |
511 | #endif | |
62e76326 | 512 | |
28bca1f7 EB |
513 | case 'a': |
514 | { | |
515 | /** \par a | |
516 | * Add optional HTTP port as given following the option */ | |
517 | char *port = xstrdup(optValue); | |
518 | // use a copy to avoid optValue modification | |
519 | add_http_port(port); | |
520 | xfree(port); | |
521 | break; | |
522 | } | |
0e657244 | 523 | |
28bca1f7 EB |
524 | case 'd': |
525 | /** \par d | |
526 | * Set global option Debug::log_stderr to the number given following the option */ | |
527 | Debug::log_stderr = xatoi(optValue); | |
528 | break; | |
529 | ||
530 | case 'f': | |
531 | /** \par f | |
532 | * Load the file given instead of the default squid.conf. */ | |
533 | xfree(ConfigFile); | |
534 | ConfigFile = xstrdup(optValue); | |
535 | break; | |
536 | ||
537 | case 'k': | |
538 | /** \par k | |
539 | * Run the administrative action given following the option */ | |
540 | ||
541 | /** \li When it is missing or an unknown option display the usage help. */ | |
542 | if (!optValue || strlen(optValue) < 1) | |
543 | usage(); | |
544 | ||
545 | else if (!strncmp(optValue, "reconfigure", strlen(optValue))) | |
546 | /** \li On reconfigure send SIGHUP. */ | |
547 | opt_send_signal = SIGHUP; | |
548 | else if (!strncmp(optValue, "rotate", strlen(optValue))) | |
549 | /** \li On rotate send SIGQUIT or SIGUSR1. */ | |
605f2c3e | 550 | #if defined(_SQUID_LINUX_THREADS_) |
28bca1f7 | 551 | opt_send_signal = SIGQUIT; |
e3175d1f | 552 | #else |
28bca1f7 | 553 | opt_send_signal = SIGUSR1; |
e3175d1f | 554 | #endif |
62e76326 | 555 | |
28bca1f7 EB |
556 | else if (!strncmp(optValue, "debug", strlen(optValue))) |
557 | /** \li On debug send SIGTRAP or SIGUSR2. */ | |
605f2c3e | 558 | #if defined(_SQUID_LINUX_THREADS_) |
28bca1f7 | 559 | opt_send_signal = SIGTRAP; |
e3175d1f | 560 | #else |
28bca1f7 | 561 | opt_send_signal = SIGUSR2; |
62e76326 | 562 | #endif |
563 | ||
28bca1f7 EB |
564 | else if (!strncmp(optValue, "shutdown", strlen(optValue))) |
565 | /** \li On shutdown send SIGTERM. */ | |
566 | opt_send_signal = SIGTERM; | |
567 | else if (!strncmp(optValue, "interrupt", strlen(optValue))) | |
568 | /** \li On interrupt send SIGINT. */ | |
569 | opt_send_signal = SIGINT; | |
570 | else if (!strncmp(optValue, "kill", strlen(optValue))) | |
571 | /** \li On kill send SIGKILL. */ | |
572 | opt_send_signal = SIGKILL; | |
ae1feb30 | 573 | |
574 | #ifdef SIGTTIN | |
575 | ||
28bca1f7 EB |
576 | else if (!strncmp(optValue, "restart", strlen(optValue))) |
577 | /** \li On restart send SIGTTIN. (exit and restart by parent) */ | |
578 | opt_send_signal = SIGTTIN; | |
ae1feb30 | 579 | |
580 | #endif | |
581 | ||
28bca1f7 EB |
582 | else if (!strncmp(optValue, "check", strlen(optValue))) |
583 | /** \li On check send 0 / SIGNULL. */ | |
584 | opt_send_signal = 0; /* SIGNULL */ | |
585 | else if (!strncmp(optValue, "parse", strlen(optValue))) | |
586 | /** \li On parse set global flag to re-parse the config file only. */ | |
587 | opt_parse_cfg_only = 1; | |
588 | else | |
589 | usage(); | |
62e76326 | 590 | |
28bca1f7 | 591 | break; |
62e76326 | 592 | |
28bca1f7 EB |
593 | case 'm': |
594 | /** \par m | |
595 | * Set global malloc_debug_level to the value given following the option. | |
596 | * if none is given it toggles the xmalloc_trace option on/off */ | |
597 | if (optValue) { | |
30a4f2a8 | 598 | #if MALLOC_DBG |
28bca1f7 | 599 | malloc_debug_level = xatoi(optValue); |
30a4f2a8 | 600 | #else |
28bca1f7 | 601 | fatal("Need to add -DMALLOC_DBG when compiling to use -mX option"); |
33ab18e8 | 602 | #endif |
62e76326 | 603 | |
28bca1f7 EB |
604 | } |
605 | break; | |
606 | ||
607 | case 'n': | |
608 | /** \par n | |
609 | * Set global option opt_signal_service (to true). | |
610 | * Stores the additional parameter given in global service_name */ | |
611 | if (optValue && *optValue != '\0') { | |
612 | const SBuf t(optValue); | |
613 | ::Parser::Tokenizer tok(t); | |
614 | const CharacterSet chr = CharacterSet::ALPHA+CharacterSet::DIGIT; | |
615 | if (!tok.prefix(service_name, chr)) | |
616 | fatalf("Expected alphanumeric service name for the -n option but got: %s", optValue); | |
617 | if (!tok.atEnd()) | |
618 | fatalf("Garbage after alphanumeric service name in the -n option value: %s", optValue); | |
619 | if (service_name.length() > 32) | |
620 | fatalf("Service name (-n option) must be limited to 32 characters but got %u", service_name.length()); | |
621 | opt_signal_service = true; | |
622 | } else { | |
623 | fatal("A service name is required for the -n option"); | |
624 | } | |
625 | break; | |
0e657244 | 626 | |
cf2155f2 AJ |
627 | #if USE_WIN32_SERVICE |
628 | ||
28bca1f7 EB |
629 | case 'r': |
630 | /** \par r | |
631 | * Set global option opt_remove_service (to TRUE) */ | |
632 | opt_remove_service = TRUE; | |
0e657244 | 633 | |
28bca1f7 | 634 | break; |
0e657244 | 635 | |
636 | #endif | |
637 | ||
28bca1f7 EB |
638 | case 'l': |
639 | /** \par l | |
640 | * Stores the syslog facility name in global opt_syslog_facility | |
641 | * then performs actions for -s option. */ | |
642 | xfree(opt_syslog_facility); // ignore any previous options sent | |
643 | opt_syslog_facility = xstrdup(optValue); | |
5e6d4736 | 644 | |
28bca1f7 EB |
645 | case 's': |
646 | /** \par s | |
647 | * Initialize the syslog for output */ | |
c307aec3 | 648 | #if HAVE_SYSLOG |
62e76326 | 649 | |
28bca1f7 | 650 | _db_set_syslog(opt_syslog_facility); |
0e657244 | 651 | |
28bca1f7 | 652 | break; |
0e657244 | 653 | |
c307aec3 | 654 | #else |
62e76326 | 655 | |
28bca1f7 | 656 | fatal("Logging to syslog not available on this platform"); |
0e657244 | 657 | |
28bca1f7 | 658 | /* NOTREACHED */ |
62e76326 | 659 | #endif |
660 | ||
28bca1f7 EB |
661 | case 'u': |
662 | /** \par u | |
663 | * Store the ICP port number given in global option icpPortNumOverride | |
664 | * ensuring its a positive number. */ | |
665 | icpPortNumOverride = atoi(optValue); | |
62e76326 | 666 | |
28bca1f7 EB |
667 | if (icpPortNumOverride < 0) |
668 | icpPortNumOverride = 0; | |
62e76326 | 669 | |
28bca1f7 | 670 | break; |
62e76326 | 671 | |
28bca1f7 EB |
672 | case 'v': |
673 | /** \par v | |
674 | * Display squid version and build information. Then exit. */ | |
675 | printf("Squid Cache: Version %s\n",version_string); | |
676 | printf("Service Name: " SQUIDSBUFPH "\n", SQUIDSBUFPRINT(service_name)); | |
677 | if (strlen(SQUID_BUILD_INFO)) | |
678 | printf("%s\n",SQUID_BUILD_INFO); | |
dcaa51f4 | 679 | #if USE_OPENSSL |
24b30fdc | 680 | printf("\nThis binary uses %s. ", OpenSSL_version(OPENSSL_VERSION)); |
28bca1f7 | 681 | printf("For legal restrictions on distribution see https://www.openssl.org/source/license.html\n\n"); |
dcaa51f4 | 682 | #endif |
28bca1f7 | 683 | printf( "configure options: %s\n", SQUID_CONFIGURE_OPTIONS); |
62e76326 | 684 | |
1a774556 | 685 | #if USE_WIN32_SERVICE |
686 | ||
28bca1f7 | 687 | printf("Compiled as Windows System Service.\n"); |
1a774556 | 688 | |
689 | #endif | |
690 | ||
28bca1f7 | 691 | exit(EXIT_SUCCESS); |
62e76326 | 692 | |
28bca1f7 | 693 | /* NOTREACHED */ |
62e76326 | 694 | |
28bca1f7 EB |
695 | case 'z': |
696 | /** \par z | |
697 | * Set global option Debug::log_stderr and opt_create_swap_dirs */ | |
698 | Debug::log_stderr = 1; | |
699 | opt_create_swap_dirs = 1; | |
700 | break; | |
62e76326 | 701 | |
28bca1f7 EB |
702 | case optForeground: |
703 | /** \par --foreground | |
704 | * Set global option opt_foreground */ | |
705 | opt_foreground = 1; | |
706 | break; | |
effda67e | 707 | |
28bca1f7 EB |
708 | case optKid: |
709 | // already processed in ConfigureCurrentKid() | |
710 | break; | |
63be0a78 | 711 | |
28bca1f7 | 712 | case 'h': |
62e76326 | 713 | |
28bca1f7 | 714 | case '?': |
62e76326 | 715 | |
28bca1f7 EB |
716 | default: |
717 | /** \par h,?, or unknown | |
718 | * \copydoc usage() */ | |
719 | usage(); | |
9b7292ce | 720 | |
28bca1f7 | 721 | break; |
090089c4 | 722 | } |
4d64d74a | 723 | } |
090089c4 | 724 | |
7a2f978b | 725 | /* ARGSUSED */ |
b293c4d8 | 726 | void |
9b7292ce | 727 | rotate_logs(int sig) |
728 | { | |
5cd39a10 | 729 | do_rotate = 1; |
a2c48c98 | 730 | RotateSignal = sig; |
7aa9bb3e | 731 | #if !_SQUID_WINDOWS_ |
30a4f2a8 | 732 | #if !HAVE_SIGACTION |
62e76326 | 733 | |
30a4f2a8 | 734 | signal(sig, rotate_logs); |
735 | #endif | |
a50bfe93 | 736 | #endif |
30a4f2a8 | 737 | } |
738 | ||
7a2f978b | 739 | /* ARGSUSED */ |
b293c4d8 | 740 | void |
9b7292ce | 741 | reconfigure(int sig) |
742 | { | |
5cd39a10 | 743 | do_reconfigure = 1; |
a2c48c98 | 744 | ReconfigureSignal = sig; |
7aa9bb3e | 745 | #if !_SQUID_WINDOWS_ |
30a4f2a8 | 746 | #if !HAVE_SIGACTION |
62e76326 | 747 | |
30a4f2a8 | 748 | signal(sig, reconfigure); |
749 | #endif | |
a50bfe93 | 750 | #endif |
30a4f2a8 | 751 | } |
752 | ||
00e2479d AR |
753 | void |
754 | master_revive_kids(int sig) | |
755 | { | |
756 | ReviveKidsSignal = sig; | |
757 | do_revive_kids = true; | |
758 | ||
759 | #if !_SQUID_WINDOWS_ | |
760 | #if !HAVE_SIGACTION | |
761 | signal(sig, master_revive_kids); | |
762 | #endif | |
763 | #endif | |
764 | } | |
765 | ||
dbf55289 CT |
766 | /// Shutdown signal handler for master process |
767 | void | |
768 | master_shutdown(int sig) | |
769 | { | |
770 | do_shutdown = 1; | |
771 | ShutdownSignal = sig; | |
772 | ||
773 | #if !_SQUID_WINDOWS_ | |
774 | #if !HAVE_SIGACTION | |
775 | signal(sig, master_shutdown); | |
776 | #endif | |
777 | #endif | |
778 | ||
779 | } | |
780 | ||
b8d8561b | 781 | void |
9b7292ce | 782 | shut_down(int sig) |
783 | { | |
2681d383 | 784 | do_shutdown = sig == SIGINT ? -1 : 1; |
a2c48c98 | 785 | ShutdownSignal = sig; |
d75df34a | 786 | #if defined(SIGTTIN) |
ae1feb30 | 787 | if (SIGTTIN == sig) |
24885773 | 788 | shutdown_status = EXIT_FAILURE; |
ae1feb30 | 789 | #endif |
ca4b9ee6 | 790 | |
d75df34a | 791 | #if !_SQUID_WINDOWS_ |
dbf55289 CT |
792 | #if !HAVE_SIGACTION |
793 | signal(sig, shut_down); | |
794 | #endif | |
795 | #endif | |
796 | } | |
62e76326 | 797 | |
dbf55289 CT |
798 | void |
799 | sig_child(int sig) | |
800 | { | |
801 | do_handle_stopped_child = 1; | |
62e76326 | 802 | |
dbf55289 CT |
803 | #if !_SQUID_WINDOWS_ |
804 | #if !HAVE_SIGACTION | |
805 | signal(sig, sig_child); | |
a50bfe93 | 806 | #endif |
6e40f263 | 807 | #endif |
30a4f2a8 | 808 | } |
809 | ||
24382924 | 810 | static void |
9b7292ce | 811 | serverConnectionsOpen(void) |
812 | { | |
7de94c8c AR |
813 | if (IamPrimaryProcess()) { |
814 | #if USE_WCCP | |
5667a628 | 815 | wccpConnectionOpen(); |
7de94c8c | 816 | #endif |
45aae82b | 817 | |
7de94c8c AR |
818 | #if USE_WCCPv2 |
819 | ||
5667a628 | 820 | wccp2ConnectionOpen(); |
7de94c8c AR |
821 | #endif |
822 | } | |
095ec2b1 AR |
823 | // start various proxying services if we are responsible for them |
824 | if (IamWorkerProcess()) { | |
5667a628 | 825 | clientOpenListenSockets(); |
65d448bc | 826 | icpOpenPorts(); |
ace287ee | 827 | #if USE_HTCP |
65d448bc | 828 | htcpOpenPorts(); |
ace287ee | 829 | #endif |
a67d2b2e | 830 | #if SQUID_SNMP |
65d448bc | 831 | snmpOpenPorts(); |
320e9f36 | 832 | #endif |
0b0cfcf2 | 833 | |
5667a628 AR |
834 | icmpEngine.Open(); |
835 | netdbInit(); | |
836 | asnInit(); | |
837 | ACL::Initialize(); | |
838 | peerSelectInit(); | |
839 | ||
840 | carpInit(); | |
2f1431ea | 841 | #if USE_AUTH |
5667a628 | 842 | peerUserHashInit(); |
2f1431ea | 843 | #endif |
5667a628 | 844 | peerSourceHashInit(); |
7de94c8c | 845 | } |
5f3f8d0e | 846 | } |
847 | ||
d71e4674 | 848 | static void |
9b7292ce | 849 | serverConnectionsClose(void) |
850 | { | |
0a5a8601 | 851 | assert(shutting_down || reconfiguring); |
7de94c8c AR |
852 | |
853 | if (IamPrimaryProcess()) { | |
854 | #if USE_WCCP | |
855 | ||
5667a628 | 856 | wccpConnectionClose(); |
7de94c8c AR |
857 | #endif |
858 | #if USE_WCCPv2 | |
859 | ||
5667a628 | 860 | wccp2ConnectionClose(); |
7de94c8c AR |
861 | #endif |
862 | } | |
095ec2b1 | 863 | if (IamWorkerProcess()) { |
434a79b0 | 864 | clientConnectionsClose(); |
5667a628 | 865 | icpConnectionShutdown(); |
72549e05 | 866 | #if USE_HTCP |
5667a628 | 867 | htcpSocketShutdown(); |
72549e05 | 868 | #endif |
62e76326 | 869 | |
5667a628 | 870 | icmpEngine.Close(); |
a67d2b2e | 871 | #if SQUID_SNMP |
65d448bc | 872 | snmpClosePorts(); |
320e9f36 | 873 | #endif |
62e76326 | 874 | |
5667a628 | 875 | asnFreeMemory(); |
7de94c8c | 876 | } |
5f3f8d0e | 877 | } |
878 | ||
b8d8561b | 879 | static void |
d71e4674 | 880 | mainReconfigureStart(void) |
9b7292ce | 881 | { |
39d48b4f AR |
882 | if (AvoidSignalAction("reconfiguration", do_reconfigure)) |
883 | return; | |
884 | ||
e0236918 | 885 | debugs(1, DBG_IMPORTANT, "Reconfiguring Squid Cache (version " << version_string << ")..."); |
5cd39a10 | 886 | reconfiguring = 1; |
d71e4674 | 887 | |
ee58de20 AJ |
888 | RunRegisteredHere(RegisteredRunner::startReconfigure); |
889 | ||
d71e4674 | 890 | // Initiate asynchronous closing sequence |
15df8349 | 891 | serverConnectionsClose(); |
65d448bc | 892 | icpClosePorts(); |
72549e05 | 893 | #if USE_HTCP |
65d448bc | 894 | htcpClosePorts(); |
72549e05 | 895 | #endif |
cb4f4424 | 896 | #if USE_OPENSSL |
95d2589c CT |
897 | Ssl::TheGlobalContextStorage.reconfigureStart(); |
898 | #endif | |
2f1431ea | 899 | #if USE_AUTH |
0bcb6908 | 900 | authenticateReset(); |
2f1431ea | 901 | #endif |
d9572179 | 902 | externalAclShutdown(); |
2db68ce5 | 903 | storeDirCloseSwapLogs(); |
2e923080 | 904 | storeLogClose(); |
905 | accessLogClose(); | |
3ff65596 AR |
906 | #if ICAP_CLIENT |
907 | icapLogClose(); | |
908 | #endif | |
d71e4674 AR |
909 | |
910 | eventAdd("mainReconfigureFinish", &mainReconfigureFinish, NULL, 0, 1, | |
26ac0430 | 911 | false); |
d71e4674 AR |
912 | } |
913 | ||
914 | static void | |
26ac0430 AJ |
915 | mainReconfigureFinish(void *) |
916 | { | |
d71e4674 AR |
917 | debugs(1, 3, "finishing reconfiguring"); |
918 | ||
c68e9c6b | 919 | errorClean(); |
f53969cc | 920 | enter_suid(); /* root to read config file */ |
936b23cd AJ |
921 | |
922 | // we may have disabled the need for PURGE | |
e1381638 | 923 | if (Config2.onoff.enable_purge) |
936b23cd AJ |
924 | Config2.onoff.enable_purge = 2; |
925 | ||
18631119 | 926 | // parse the config returns a count of errors encountered. |
13aeac35 | 927 | const int oldWorkers = Config.workers; |
8951901e AJ |
928 | try { |
929 | if (parseConfigFile(ConfigFile) != 0) { | |
930 | // for now any errors are a fatal condition... | |
931 | self_destruct(); | |
932 | } | |
933 | } catch (...) { | |
18631119 | 934 | // for now any errors are a fatal condition... |
8951901e AJ |
935 | debugs(1, DBG_CRITICAL, "FATAL: Unhandled exception parsing config file. " << |
936 | " Run squid -k parse and check for errors."); | |
18631119 AJ |
937 | self_destruct(); |
938 | } | |
8951901e | 939 | |
13aeac35 AR |
940 | if (oldWorkers != Config.workers) { |
941 | debugs(1, DBG_CRITICAL, "WARNING: Changing 'workers' (from " << | |
5667a628 | 942 | oldWorkers << " to " << Config.workers << |
0b68976e | 943 | ") requires a full restart. It has been ignored by reconfigure."); |
13aeac35 | 944 | Config.workers = oldWorkers; |
a2c48c98 | 945 | } |
936b23cd | 946 | |
21b7990f AR |
947 | RunRegisteredHere(RegisteredRunner::syncConfig); |
948 | ||
96c2bb61 AR |
949 | if (IamPrimaryProcess()) |
950 | CpuAffinityCheck(); | |
951 | CpuAffinityReconfigure(); | |
952 | ||
c642c141 | 953 | setUmask(Config.umask); |
97244680 | 954 | Mem::Report(); |
3aa4adbc | 955 | setEffectiveUser(); |
62493678 | 956 | _db_init(Debug::cache_log, Debug::debugOptions); |
f53969cc SM |
957 | ipcache_restart(); /* clear stuck entries */ |
958 | fqdncache_restart(); /* sigh, fqdncache too */ | |
0e70aa1e | 959 | parseEtcHosts(); |
f53969cc | 960 | errorInitialize(); /* reload error pages */ |
2e923080 | 961 | accessLogInit(); |
76fc7e57 AJ |
962 | |
963 | #if USE_LOADABLE_MODULES | |
964 | LoadableModulesConfigure(Config.loadable_module_names); | |
965 | #endif | |
966 | ||
967 | #if USE_ADAPTATION | |
968 | bool enableAdaptation = false; | |
969 | #if ICAP_CLIENT | |
970 | Adaptation::Icap::TheConfig.finalize(); | |
971 | enableAdaptation = Adaptation::Icap::TheConfig.onoff || enableAdaptation; | |
972 | #endif | |
973 | #if USE_ECAP | |
974 | Adaptation::Ecap::TheConfig.finalize(); // must be after we load modules | |
975 | enableAdaptation = Adaptation::Ecap::TheConfig.onoff || enableAdaptation; | |
976 | #endif | |
977 | Adaptation::Config::Finalize(enableAdaptation); | |
978 | #endif | |
d090e020 | 979 | |
3ff65596 AR |
980 | #if ICAP_CLIENT |
981 | icapLogOpen(); | |
982 | #endif | |
2e923080 | 983 | storeLogOpen(); |
4a3b98d7 | 984 | Dns::Init(); |
95d2589c | 985 | #if USE_SSL_CRTD |
23da195f | 986 | Ssl::Helper::Reconfigure(); |
95d2589c | 987 | #endif |
cb4f4424 | 988 | #if USE_OPENSSL |
23da195f | 989 | Ssl::CertValidationHelper::Reconfigure(); |
2cef0ca6 | 990 | #endif |
62e76326 | 991 | |
23da195f | 992 | redirectReconfigure(); |
2f1431ea | 993 | #if USE_AUTH |
5c112575 | 994 | authenticateInit(&Auth::TheConfig.schemes); |
2f1431ea | 995 | #endif |
d9572179 | 996 | externalAclInit(); |
7de94c8c AR |
997 | |
998 | if (IamPrimaryProcess()) { | |
1f38f50a | 999 | #if USE_WCCP |
62e76326 | 1000 | |
5667a628 | 1001 | wccpInit(); |
1f38f50a | 1002 | #endif |
0b0cfcf2 | 1003 | #if USE_WCCPv2 |
1004 | ||
5667a628 | 1005 | wccp2Init(); |
0b0cfcf2 | 1006 | #endif |
7de94c8c | 1007 | } |
62e76326 | 1008 | |
0ffd22bc | 1009 | serverConnectionsOpen(); |
9c2e9b50 | 1010 | |
3ee2b4f8 | 1011 | neighbors_init(); |
9c2e9b50 | 1012 | |
2db68ce5 | 1013 | storeDirOpenSwapLogs(); |
9c2e9b50 | 1014 | |
9c021a38 | 1015 | mimeInit(Config.mimeTablePathname); |
9c2e9b50 | 1016 | |
c521ad17 DK |
1017 | if (unlinkdNeeded()) |
1018 | unlinkdInit(); | |
c521ad17 | 1019 | |
9a0a18de | 1020 | #if USE_DELAY_POOLS |
b4cd430a CT |
1021 | Config.ClientDelay.finalize(); |
1022 | #endif | |
1023 | ||
926375e6 | 1024 | if (Config.onoff.announce) { |
1025 | if (!eventFind(start_announce, NULL)) | |
1026 | eventAdd("start_announce", start_announce, NULL, 3600.0, 1); | |
1027 | } else { | |
1028 | if (eventFind(start_announce, NULL)) | |
1029 | eventDelete(start_announce, NULL); | |
1030 | } | |
1031 | ||
5cd39a10 | 1032 | reconfiguring = 0; |
1033 | } | |
1034 | ||
1035 | static void | |
9b7292ce | 1036 | mainRotate(void) |
1037 | { | |
39d48b4f AR |
1038 | if (AvoidSignalAction("log rotation", do_rotate)) |
1039 | return; | |
1040 | ||
cc192b50 | 1041 | icmpEngine.Close(); |
e40aa8da | 1042 | redirectShutdown(); |
2f1431ea | 1043 | #if USE_AUTH |
0bcb6908 | 1044 | authenticateRotate(); |
2f1431ea | 1045 | #endif |
d9572179 | 1046 | externalAclShutdown(); |
0a6dd8fb | 1047 | |
f53969cc | 1048 | _db_rotate_log(); /* cache.log */ |
5cd39a10 | 1049 | storeDirWriteCleanLogs(1); |
f53969cc SM |
1050 | storeLogRotate(); /* store.log */ |
1051 | accessLogRotate(); /* access.log */ | |
3ff65596 AR |
1052 | #if ICAP_CLIENT |
1053 | icapLogRotate(); /*icap.log*/ | |
1054 | #endif | |
cc192b50 | 1055 | icmpEngine.Open(); |
e40aa8da | 1056 | redirectInit(); |
2f1431ea | 1057 | #if USE_AUTH |
5c112575 | 1058 | authenticateInit(&Auth::TheConfig.schemes); |
2f1431ea | 1059 | #endif |
d9572179 | 1060 | externalAclInit(); |
5f3f8d0e | 1061 | } |
1062 | ||
067bea91 | 1063 | static void |
9b7292ce | 1064 | setEffectiveUser(void) |
1065 | { | |
fc68f6b1 | 1066 | keepCapabilities(); |
f53969cc | 1067 | leave_suid(); /* Run as non privilegied user */ |
1191b93b | 1068 | #if _SQUID_OS2_ |
62e76326 | 1069 | |
cd377065 | 1070 | return; |
1071 | #endif | |
62e76326 | 1072 | |
85407535 | 1073 | if (geteuid() == 0) { |
fa84c01d FC |
1074 | debugs(0, DBG_CRITICAL, "Squid is not safe to run as root! If you must"); |
1075 | debugs(0, DBG_CRITICAL, "start Squid as root, then you must configure"); | |
1076 | debugs(0, DBG_CRITICAL, "it to run as a non-priveledged user with the"); | |
1077 | debugs(0, DBG_CRITICAL, "'cache_effective_user' option in the config file."); | |
62e76326 | 1078 | fatal("Don't run Squid as root, set 'cache_effective_user'!"); |
85407535 | 1079 | } |
1080 | } | |
1081 | ||
dd0cbc64 AR |
1082 | /// changes working directory, providing error reporting |
1083 | static bool | |
1084 | mainChangeDir(const char *dir) | |
1085 | { | |
1086 | if (chdir(dir) == 0) | |
1087 | return true; | |
1088 | ||
b69e9ffa AJ |
1089 | int xerrno = errno; |
1090 | debugs(50, DBG_CRITICAL, "ERROR: cannot change current directory to " << dir << | |
1091 | ": " << xstrerr(xerrno)); | |
dd0cbc64 AR |
1092 | return false; |
1093 | } | |
1094 | ||
e99fa721 EB |
1095 | /// Hack: Have we called chroot()? This exposure is needed because some code has |
1096 | /// to open the same files before and after chroot() | |
1097 | bool Chrooted = false; | |
1098 | ||
133906f5 | 1099 | /// set the working directory. |
b6a2f15e | 1100 | static void |
9b7292ce | 1101 | mainSetCwd(void) |
1102 | { | |
e99fa721 EB |
1103 | if (Config.chroot_dir && !Chrooted) { |
1104 | Chrooted = true; | |
62e76326 | 1105 | |
b69e9ffa AJ |
1106 | if (chroot(Config.chroot_dir) != 0) { |
1107 | int xerrno = errno; | |
1108 | fatalf("chroot to %s failed: %s", Config.chroot_dir, xstrerr(xerrno)); | |
1109 | } | |
133906f5 | 1110 | |
dd0cbc64 AR |
1111 | if (!mainChangeDir("/")) |
1112 | fatalf("chdir to / after chroot to %s failed", Config.chroot_dir); | |
133906f5 AJ |
1113 | } |
1114 | ||
dd0cbc64 AR |
1115 | if (Config.coredump_dir && strcmp("none", Config.coredump_dir) != 0) { |
1116 | if (mainChangeDir(Config.coredump_dir)) { | |
e0236918 | 1117 | debugs(0, DBG_IMPORTANT, "Set Current Directory to " << Config.coredump_dir); |
62e76326 | 1118 | return; |
62e76326 | 1119 | } |
b6a2f15e | 1120 | } |
62e76326 | 1121 | |
02e8115e | 1122 | /* If we don't have coredump_dir or couldn't cd there, report current dir */ |
dd0cbc64 | 1123 | char pathbuf[MAXPATHLEN]; |
4a504376 | 1124 | if (getcwd(pathbuf, MAXPATHLEN)) { |
e0236918 | 1125 | debugs(0, DBG_IMPORTANT, "Current Directory is " << pathbuf); |
4a504376 | 1126 | } else { |
b69e9ffa AJ |
1127 | int xerrno = errno; |
1128 | debugs(50, DBG_CRITICAL, "WARNING: Can't find current directory, getcwd: " << xstrerr(xerrno)); | |
4a504376 | 1129 | } |
b6a2f15e | 1130 | } |
1131 | ||
b8d8561b | 1132 | static void |
9b7292ce | 1133 | mainInitialize(void) |
1134 | { | |
1758c627 | 1135 | if (opt_catch_signals) { |
62e76326 | 1136 | squid_signal(SIGSEGV, death, SA_NODEFER | SA_RESETHAND); |
1137 | squid_signal(SIGBUS, death, SA_NODEFER | SA_RESETHAND); | |
44f99671 | 1138 | } |
62e76326 | 1139 | |
30a4f2a8 | 1140 | squid_signal(SIGPIPE, SIG_IGN, SA_RESTART); |
1141 | squid_signal(SIGCHLD, sig_child, SA_NODEFER | SA_RESTART); | |
a918ecc6 | 1142 | squid_signal(SIGHUP, reconfigure, SA_RESTART); |
44f99671 | 1143 | |
85407535 | 1144 | setEffectiveUser(); |
62e76326 | 1145 | |
30a4f2a8 | 1146 | if (icpPortNumOverride != 1) |
f45dd259 | 1147 | Config.Port.icp = (unsigned short) icpPortNumOverride; |
30a4f2a8 | 1148 | |
fa84c01d | 1149 | debugs(1, DBG_CRITICAL, "Starting Squid Cache version " << version_string << " for " << CONFIG_HOST_TYPE << "..."); |
cf2155f2 | 1150 | debugs(1, DBG_CRITICAL, "Service Name: " << service_name); |
62e76326 | 1151 | |
be266cb2 | 1152 | #if _SQUID_WINDOWS_ |
b293c4d8 | 1153 | if (WIN32_run_mode == _WIN_SQUID_RUN_MODE_SERVICE) { |
fa84c01d | 1154 | debugs(1, DBG_CRITICAL, "Service command line is: " << WIN32_Service_Command_Line); |
b293c4d8 | 1155 | } else |
fa84c01d | 1156 | debugs(1, DBG_CRITICAL, "Running on " << WIN32_OS_string); |
b293c4d8 | 1157 | #endif |
1158 | ||
e0236918 | 1159 | debugs(1, DBG_IMPORTANT, "Process ID " << getpid()); |
095ec2b1 | 1160 | |
e0236918 | 1161 | debugs(1, DBG_IMPORTANT, "Process Roles:" << ProcessRoles()); |
095ec2b1 | 1162 | |
f3f0f563 | 1163 | setSystemLimits(); |
e0236918 | 1164 | debugs(1, DBG_IMPORTANT, "With " << Squid_MaxFD << " file descriptors available"); |
5f3f8d0e | 1165 | |
7aa9bb3e | 1166 | #if _SQUID_WINDOWS_ |
6c1962dd | 1167 | |
e0236918 | 1168 | debugs(1, DBG_IMPORTANT, "With " << _getmaxstdio() << " CRT stdio descriptors available"); |
6c1962dd | 1169 | |
1170 | if (WIN32_Socks_initialized) | |
e0236918 | 1171 | debugs(1, DBG_IMPORTANT, "Windows sockets initialized"); |
6c1962dd | 1172 | |
babd1fd5 | 1173 | if (WIN32_OS_version > _WIN_OS_WINNT) { |
26ac0430 | 1174 | WIN32_IpAddrChangeMonitorInit(); |
babd1fd5 | 1175 | } |
1176 | ||
6c1962dd | 1177 | #endif |
1178 | ||
5f3f8d0e | 1179 | ipcache_init(); |
62e76326 | 1180 | |
f88bb09c | 1181 | fqdncache_init(); |
62e76326 | 1182 | |
0e70aa1e | 1183 | parseEtcHosts(); |
62e76326 | 1184 | |
4a3b98d7 | 1185 | Dns::Init(); |
62e76326 | 1186 | |
586089cd | 1187 | #if USE_SSL_CRTD |
23da195f | 1188 | Ssl::Helper::Init(); |
586089cd CT |
1189 | #endif |
1190 | ||
cb4f4424 | 1191 | #if USE_OPENSSL |
23da195f | 1192 | Ssl::CertValidationHelper::Init(); |
2cef0ca6 AR |
1193 | #endif |
1194 | ||
74addf6c | 1195 | redirectInit(); |
2f1431ea | 1196 | #if USE_AUTH |
5c112575 | 1197 | authenticateInit(&Auth::TheConfig.schemes); |
2f1431ea | 1198 | #endif |
d9572179 | 1199 | externalAclInit(); |
62e76326 | 1200 | |
f53969cc | 1201 | httpHeaderInitModule(); /* must go before any header processing (e.g. the one in errorInitialize) */ |
62e76326 | 1202 | |
9b312a19 | 1203 | errorInitialize(); |
62e76326 | 1204 | |
7a2f978b | 1205 | accessLogInit(); |
62e76326 | 1206 | |
e1381638 | 1207 | #if ICAP_CLIENT |
3ff65596 AR |
1208 | icapLogOpen(); |
1209 | #endif | |
1210 | ||
3898f57f | 1211 | #if USE_IDENT |
4daaf3cb | 1212 | Ident::Init(); |
3898f57f | 1213 | #endif |
4daaf3cb | 1214 | |
59ad6d31 | 1215 | #if SQUID_SNMP |
62e76326 | 1216 | |
5e14bf6d | 1217 | snmpInit(); |
62e76326 | 1218 | |
5e14bf6d | 1219 | #endif |
30a4f2a8 | 1220 | #if MALLOC_DBG |
62e76326 | 1221 | |
5f3f8d0e | 1222 | malloc_debug(0, malloc_debug_level); |
62e76326 | 1223 | |
5f3f8d0e | 1224 | #endif |
1225 | ||
4a950bad EB |
1226 | if (unlinkdNeeded()) |
1227 | unlinkdInit(); | |
1228 | ||
1229 | urlInitialize(); | |
1230 | statInit(); | |
1231 | storeInit(); | |
1232 | mainSetCwd(); | |
1233 | mimeInit(Config.mimeTablePathname); | |
1234 | refreshInit(); | |
9a0a18de | 1235 | #if USE_DELAY_POOLS |
4a950bad | 1236 | DelayPools::Init(); |
0d7e5d78 | 1237 | #endif |
62e76326 | 1238 | |
4a950bad EB |
1239 | FwdState::initModule(); |
1240 | /* register the modules in the cache manager menus */ | |
62ee09ca | 1241 | |
4a950bad EB |
1242 | cbdataRegisterWithCacheManager(); |
1243 | SBufStatsAction::RegisterWithCacheManager(); | |
d87f6b1d | 1244 | |
4a950bad EB |
1245 | /* These use separate calls so that the comm loops can eventually |
1246 | * coexist. | |
1247 | */ | |
62ee09ca | 1248 | |
4a950bad | 1249 | eventInit(); |
610ee341 | 1250 | |
4a950bad EB |
1251 | // TODO: pconn is a good candidate for new-style registration |
1252 | // PconnModule::GetInstance()->registerWithCacheManager(); | |
1253 | // moved to PconnModule::PconnModule() | |
62e76326 | 1254 | |
7de94c8c | 1255 | if (IamPrimaryProcess()) { |
1f38f50a | 1256 | #if USE_WCCP |
5667a628 | 1257 | wccpInit(); |
62e76326 | 1258 | |
0b0cfcf2 | 1259 | #endif |
1260 | #if USE_WCCPv2 | |
1261 | ||
5667a628 | 1262 | wccp2Init(); |
0b0cfcf2 | 1263 | |
1f38f50a | 1264 | #endif |
7de94c8c | 1265 | } |
62e76326 | 1266 | |
2285407f | 1267 | serverConnectionsOpen(); |
62e76326 | 1268 | |
3ee2b4f8 | 1269 | neighbors_init(); |
fc68f6b1 | 1270 | |
5f5e883f | 1271 | // neighborsRegisterWithCacheManager(); //moved to neighbors_init() |
62e76326 | 1272 | |
efd900cb | 1273 | if (Config.chroot_dir) |
62e76326 | 1274 | no_suid(); |
1275 | ||
605f2c3e | 1276 | #if defined(_SQUID_LINUX_THREADS_) |
62e76326 | 1277 | |
e3175d1f | 1278 | squid_signal(SIGQUIT, rotate_logs, SA_RESTART); |
62e76326 | 1279 | |
e3175d1f | 1280 | squid_signal(SIGTRAP, sigusr2_handle, SA_RESTART); |
62e76326 | 1281 | |
e3175d1f | 1282 | #else |
62e76326 | 1283 | |
30a4f2a8 | 1284 | squid_signal(SIGUSR1, rotate_logs, SA_RESTART); |
62e76326 | 1285 | |
30a4f2a8 | 1286 | squid_signal(SIGUSR2, sigusr2_handle, SA_RESTART); |
62e76326 | 1287 | |
9fc0b4b8 | 1288 | #endif |
62e76326 | 1289 | |
dbf55289 | 1290 | squid_signal(SIGTERM, shut_down, SA_RESTART); |
62e76326 | 1291 | |
dbf55289 | 1292 | squid_signal(SIGINT, shut_down, SA_RESTART); |
62e76326 | 1293 | |
ae1feb30 | 1294 | #ifdef SIGTTIN |
1295 | ||
dbf55289 | 1296 | squid_signal(SIGTTIN, shut_down, SA_RESTART); |
ae1feb30 | 1297 | |
1298 | #endif | |
1299 | ||
58a39dc9 | 1300 | memCheckInit(); |
62e76326 | 1301 | |
57afc994 AR |
1302 | #if USE_LOADABLE_MODULES |
1303 | LoadableModulesConfigure(Config.loadable_module_names); | |
1304 | #endif | |
1305 | ||
8f361c50 AR |
1306 | #if USE_ADAPTATION |
1307 | bool enableAdaptation = false; | |
1308 | ||
1309 | // We can remove this dependency on specific adaptation mechanisms | |
1310 | // if we create a generic Registry of such mechanisms. Should we? | |
b958cb0f | 1311 | #if ICAP_CLIENT |
26cc52cb AR |
1312 | Adaptation::Icap::TheConfig.finalize(); |
1313 | enableAdaptation = Adaptation::Icap::TheConfig.onoff || enableAdaptation; | |
6e5db507 AR |
1314 | #endif |
1315 | #if USE_ECAP | |
574b508c AR |
1316 | Adaptation::Ecap::TheConfig.finalize(); // must be after we load modules |
1317 | enableAdaptation = Adaptation::Ecap::TheConfig.onoff || enableAdaptation; | |
b958cb0f | 1318 | #endif |
8f361c50 AR |
1319 | // must be the last adaptation-related finalize |
1320 | Adaptation::Config::Finalize(enableAdaptation); | |
b958cb0f AR |
1321 | #endif |
1322 | ||
79039294 AR |
1323 | #if USE_SQUID_ESI |
1324 | Esi::Init(); | |
1325 | #endif | |
b958cb0f | 1326 | |
9a0a18de | 1327 | #if USE_DELAY_POOLS |
b4cd430a CT |
1328 | Config.ClientDelay.finalize(); |
1329 | #endif | |
1330 | ||
4a950bad | 1331 | eventAdd("storeMaintain", Store::Maintain, nullptr, 1.0, 1); |
62e76326 | 1332 | |
4a950bad EB |
1333 | if (Config.onoff.announce) |
1334 | eventAdd("start_announce", start_announce, nullptr, 3600.0, 1); | |
62e76326 | 1335 | |
4a950bad | 1336 | eventAdd("ipcache_purgelru", ipcache_purgelru, nullptr, 10.0, 1); |
62e76326 | 1337 | |
4a950bad | 1338 | eventAdd("fqdncache_purgelru", fqdncache_purgelru, nullptr, 15.0, 1); |
62e76326 | 1339 | |
88bfe092 | 1340 | #if USE_XPROF_STATS |
62e76326 | 1341 | |
4a950bad | 1342 | eventAdd("cpuProfiling", xprof_event, nullptr, 1.0, 1); |
62e76326 | 1343 | |
88bfe092 | 1344 | #endif |
62e76326 | 1345 | |
4a950bad | 1346 | eventAdd("memPoolCleanIdlePools", Mem::CleanIdlePools, nullptr, 15.0, 1); |
62e76326 | 1347 | |
dbe4fd8e | 1348 | configured_once = 1; |
4d64d74a | 1349 | } |
1350 | ||
ebdb0ef1 AR |
1351 | static void |
1352 | OnTerminate() | |
1353 | { | |
1354 | // ignore recursive calls to avoid termination loops | |
1355 | static bool terminating = false; | |
1356 | if (terminating) | |
1357 | return; | |
1358 | terminating = true; | |
1359 | ||
1360 | debugs(1, DBG_CRITICAL, "FATAL: Dying from an exception handling failure; exception: " << CurrentException); | |
1361 | abort(); | |
1362 | } | |
1363 | ||
c842329d | 1364 | /// unsafe main routine -- may throw |
f3f3e961 | 1365 | int SquidMain(int argc, char **argv); |
c842329d | 1366 | /// unsafe main routine wrapper to catch exceptions |
6e5db507 AR |
1367 | static int SquidMainSafe(int argc, char **argv); |
1368 | ||
6c1962dd | 1369 | #if USE_WIN32_SERVICE |
a74922b5 | 1370 | /* Entry point for Windows services */ |
6c1962dd | 1371 | extern "C" void WINAPI |
e1381638 | 1372 | SquidWinSvcMain(int argc, char **argv) |
18631119 AJ |
1373 | { |
1374 | SquidMainSafe(argc, argv); | |
1375 | } | |
a74922b5 AJ |
1376 | #endif |
1377 | ||
b8d8561b | 1378 | int |
1379 | main(int argc, char **argv) | |
6e5db507 | 1380 | { |
a74922b5 AJ |
1381 | #if USE_WIN32_SERVICE |
1382 | SetErrorMode(SEM_NOGPFAULTERRORBOX); | |
1383 | if ((argc == 2) && strstr(argv[1], _WIN_SQUID_SERVICE_OPTION)) | |
1384 | return WIN32_StartService(argc, argv); | |
1385 | else { | |
1386 | WIN32_run_mode = _WIN_SQUID_RUN_MODE_INTERACTIVE; | |
1387 | opt_no_daemon = 1; | |
1388 | } | |
1389 | #endif | |
1390 | ||
18631119 | 1391 | return SquidMainSafe(argc, argv); |
6e5db507 AR |
1392 | } |
1393 | ||
1394 | static int | |
1395 | SquidMainSafe(int argc, char **argv) | |
1396 | { | |
ebdb0ef1 AR |
1397 | (void)std::set_terminate(&OnTerminate); |
1398 | // XXX: This top-level catch works great for startup, but, during runtime, | |
1399 | // it erases valuable stack info. TODO: Let stack-preserving OnTerminate() | |
1400 | // handle FATAL runtime errors by splitting main code into protected | |
1401 | // startup, unprotected runtime, and protected termination sections! | |
6e5db507 AR |
1402 | try { |
1403 | return SquidMain(argc, argv); | |
26ac0430 | 1404 | } catch (...) { |
ebdb0ef1 | 1405 | debugs(1, DBG_CRITICAL, "FATAL: " << CurrentException); |
26ac0430 | 1406 | } |
24885773 | 1407 | return EXIT_FAILURE; |
6e5db507 AR |
1408 | } |
1409 | ||
d4a3e179 AR |
1410 | /// computes name and ID for the current kid process |
1411 | static void | |
28bca1f7 | 1412 | ConfigureCurrentKid(const CommandLine &cmdLine) |
d4a3e179 | 1413 | { |
28bca1f7 EB |
1414 | const char *kidParams = nullptr; |
1415 | if (cmdLine.hasOption(optKid, &kidParams)) { | |
1416 | SBuf processName(kidParams); | |
1417 | SBuf kidId; | |
1418 | Parser::Tokenizer tok(processName); | |
1419 | tok.suffix(kidId, CharacterSet::DIGIT); | |
1420 | KidIdentifier = xatoi(kidId.c_str()); | |
1421 | tok.skipSuffix(SBuf("-")); | |
1422 | TheKidName = tok.remaining(); | |
1423 | if (TheKidName.cmp("squid-coord") == 0) | |
1424 | TheProcessKind = pkCoordinator; | |
1425 | else if (TheKidName.cmp("squid") == 0) | |
1426 | TheProcessKind = pkWorker; | |
1427 | else if (TheKidName.cmp("squid-disk") == 0) | |
1428 | TheProcessKind = pkDisker; | |
1429 | else | |
1430 | TheProcessKind = pkOther; // including coordinator | |
2664c457 | 1431 | } else { |
28bca1f7 | 1432 | TheKidName.assign(APP_SHORTNAME); |
2664c457 | 1433 | KidIdentifier = 0; |
d4a3e179 | 1434 | } |
d4a3e179 AR |
1435 | } |
1436 | ||
d7ca82e6 EB |
1437 | /// Start directing debugs() messages to the configured cache.log. |
1438 | /// Until this function is called, all allowed messages go to stderr. | |
1439 | static void | |
1440 | ConfigureDebugging() | |
1441 | { | |
1442 | if (opt_no_daemon) { | |
1443 | fd_open(0, FD_LOG, "stdin"); | |
1444 | fd_open(1, FD_LOG, "stdout"); | |
1445 | fd_open(2, FD_LOG, "stderr"); | |
1446 | } | |
1447 | // we should not create cache.log outside chroot environment, if any | |
1448 | // XXX: With Config.chroot_dir set, SMP master process never calls db_init(). | |
1449 | if (!Config.chroot_dir || Chrooted) | |
1450 | _db_init(Debug::cache_log, Debug::debugOptions); | |
1451 | } | |
1452 | ||
1453 | static void | |
1454 | RunConfigUsers() | |
01ac0a5b EB |
1455 | { |
1456 | RunRegisteredHere(RegisteredRunner::claimMemoryNeeds); | |
1457 | RunRegisteredHere(RegisteredRunner::useConfig); | |
1458 | } | |
1459 | ||
d7ca82e6 EB |
1460 | static void |
1461 | StartUsingConfig() | |
1462 | { | |
1463 | setMaxFD(); | |
1464 | fde::Init(); | |
1465 | const auto skipCwdAdjusting = IamMasterProcess() && InDaemonMode(); | |
1466 | if (skipCwdAdjusting) { | |
1467 | ConfigureDebugging(); | |
1468 | RunConfigUsers(); | |
1469 | } else if (Config.chroot_dir) { | |
1470 | RunConfigUsers(); | |
1471 | enter_suid(); | |
1472 | // TODO: don't we need to RunConfigUsers() in the configured | |
1473 | // chroot environment? | |
1474 | mainSetCwd(); | |
1475 | leave_suid(); | |
1476 | ConfigureDebugging(); | |
1477 | } else { | |
1478 | ConfigureDebugging(); | |
1479 | RunConfigUsers(); | |
1480 | enter_suid(); | |
1481 | // TODO: since RunConfigUsers() may use a relative path, we | |
1482 | // need to change the process root first | |
1483 | mainSetCwd(); | |
1484 | leave_suid(); | |
1485 | } | |
1486 | } | |
1487 | ||
f3f3e961 | 1488 | int |
6e5db507 | 1489 | SquidMain(int argc, char **argv) |
9b7292ce | 1490 | { |
28bca1f7 EB |
1491 | const CommandLine cmdLine(argc, argv, shortOpStr, squidOptions); |
1492 | ||
1493 | ConfigureCurrentKid(cmdLine); | |
007d775d | 1494 | |
fb6a61d1 | 1495 | Debug::parseOptions(NULL); |
62e76326 | 1496 | |
b9269882 | 1497 | #if defined(SQUID_MAXFD_LIMIT) |
1498 | ||
1499 | if (SQUID_MAXFD_LIMIT < Squid_MaxFD) | |
1500 | Squid_MaxFD = SQUID_MAXFD_LIMIT; | |
1501 | ||
1502 | #endif | |
399e85ea | 1503 | |
cf3edd6f FC |
1504 | /* NOP under non-windows */ |
1505 | int WIN32_init_err=0; | |
a0aa9e74 | 1506 | if ((WIN32_init_err = WIN32_Subsystem_Init(&argc, &argv))) |
1507 | return WIN32_init_err; | |
0e6d05ef | 1508 | |
9b7292ce | 1509 | /* call mallopt() before anything else */ |
0b29fe44 | 1510 | #if HAVE_MALLOPT |
7328e889 | 1511 | #ifdef M_GRAIN |
9b7292ce | 1512 | /* Round up all sizes to a multiple of this */ |
1513 | mallopt(M_GRAIN, 16); | |
62e76326 | 1514 | |
7328e889 | 1515 | #endif |
1516 | #ifdef M_MXFAST | |
9b7292ce | 1517 | /* biggest size that is considered a small block */ |
1518 | mallopt(M_MXFAST, 256); | |
62e76326 | 1519 | |
7328e889 | 1520 | #endif |
1521 | #ifdef M_NBLKS | |
9b7292ce | 1522 | /* allocate this many small blocks at once */ |
1523 | mallopt(M_NLBLKS, 32); | |
62e76326 | 1524 | |
7328e889 | 1525 | #endif |
1526 | #endif /* HAVE_MALLOPT */ | |
1527 | ||
9b7292ce | 1528 | getCurrentTime(); |
62e76326 | 1529 | |
9b7292ce | 1530 | squid_start = current_time; |
62e76326 | 1531 | |
9b7292ce | 1532 | failure_notify = fatal_dump; |
4d64d74a | 1533 | |
6c1962dd | 1534 | #if USE_WIN32_SERVICE |
1535 | ||
9b7292ce | 1536 | WIN32_svcstatusupdate(SERVICE_START_PENDING, 10000); |
6c1962dd | 1537 | |
1538 | #endif | |
1539 | ||
28bca1f7 | 1540 | cmdLine.forEachOption(mainHandleCommandLineOption); |
4d64d74a | 1541 | |
effda67e MM |
1542 | if (opt_foreground && opt_no_daemon) { |
1543 | debugs(1, DBG_CRITICAL, "WARNING: --foreground command-line option has no effect with -N."); | |
1544 | } | |
1545 | ||
9aae6be3 | 1546 | if (opt_parse_cfg_only) { |
26ac0430 | 1547 | Debug::parseOptions("ALL,1"); |
9aae6be3 | 1548 | } |
1549 | ||
6c1962dd | 1550 | #if USE_WIN32_SERVICE |
1551 | ||
26ac0430 | 1552 | if (opt_install_service) { |
9b7292ce | 1553 | WIN32_InstallService(); |
a0aa9e74 | 1554 | return 0; |
9b7292ce | 1555 | } |
6c1962dd | 1556 | |
26ac0430 | 1557 | if (opt_remove_service) { |
9b7292ce | 1558 | WIN32_RemoveService(); |
a0aa9e74 | 1559 | return 0; |
9b7292ce | 1560 | } |
6c1962dd | 1561 | |
26ac0430 | 1562 | if (opt_command_line) { |
9b7292ce | 1563 | WIN32_SetServiceCommandLine(); |
a0aa9e74 | 1564 | return 0; |
9b7292ce | 1565 | } |
6c1962dd | 1566 | |
1567 | #endif | |
1568 | ||
9b7292ce | 1569 | /* parse configuration file |
1570 | * note: in "normal" case this used to be called from mainInitialize() */ | |
1571 | { | |
1572 | int parse_err; | |
62e76326 | 1573 | |
9b7292ce | 1574 | if (!ConfigFile) |
23cf13da | 1575 | ConfigFile = xstrdup(DEFAULT_CONFIG_FILE); |
62e76326 | 1576 | |
9b7292ce | 1577 | assert(!configured_once); |
62e76326 | 1578 | |
9b7292ce | 1579 | Mem::Init(); |
62e76326 | 1580 | |
50a43a49 AR |
1581 | AnyP::UriScheme::Init(); |
1582 | ||
f53969cc | 1583 | storeFsInit(); /* required for config parsing */ |
62e76326 | 1584 | |
7b5b7ba8 | 1585 | /* TODO: call the FS::Clean() in shutdown to do Fs cleanups */ |
af6a12ee | 1586 | Fs::Init(); |
7b5b7ba8 | 1587 | |
b9ae18aa | 1588 | /* May not be needed for parsing, have not audited for such */ |
1589 | DiskIOModule::SetupAllModules(); | |
1590 | ||
59b2d47f | 1591 | /* Shouldn't be needed for config parsing, but have not audited for such */ |
1592 | StoreFileSystem::SetupAllFs(); | |
1593 | ||
c8f4eac4 | 1594 | /* we may want the parsing process to set this up in the future */ |
2745fea5 | 1595 | Store::Init(); |
4eac3407 | 1596 | Acl::Init(); |
89736861 | 1597 | Auth::Init(); /* required for config parsing. NOP if !USE_AUTH */ |
055421ee AJ |
1598 | Ip::ProbeTransport(); // determine IPv4 or IPv6 capabilities before parsing. |
1599 | ||
31971e6a AJ |
1600 | Format::Token::Init(); // XXX: temporary. Use a runners registry of pre-parse runners instead. |
1601 | ||
8951901e AJ |
1602 | try { |
1603 | parse_err = parseConfigFile(ConfigFile); | |
1604 | } catch (...) { | |
1605 | // for now any errors are a fatal condition... | |
1606 | debugs(1, DBG_CRITICAL, "FATAL: Unhandled exception parsing config file." << | |
1607 | (opt_parse_cfg_only ? " Run squid -k parse and check for errors." : "")); | |
1608 | parse_err = 1; | |
1609 | } | |
62e76326 | 1610 | |
97244680 | 1611 | Mem::Report(); |
26ac0430 | 1612 | |
18631119 | 1613 | if (opt_parse_cfg_only || parse_err > 0) |
9b7292ce | 1614 | return parse_err; |
9b7292ce | 1615 | } |
c642c141 | 1616 | setUmask(Config.umask); |
e99fa721 EB |
1617 | |
1618 | // Master optimization: Where possible, avoid pointless daemon fork() and/or | |
1619 | // pointless wait for the exclusive PID file lock. This optional/weak check | |
1620 | // is not applicable to kids because they always co-exist with their master. | |
1621 | if (opt_send_signal == -1 && IamMasterProcess()) | |
1622 | Instance::ThrowIfAlreadyRunning(); | |
e13ee7ad | 1623 | |
9b7292ce | 1624 | /* send signal to running copy and exit */ |
26ac0430 | 1625 | if (opt_send_signal != -1) { |
9b7292ce | 1626 | /* chroot if configured to run inside chroot */ |
133906f5 | 1627 | mainSetCwd(); |
a572d8be | 1628 | if (Config.chroot_dir) { |
a572d8be | 1629 | no_suid(); |
1630 | } else { | |
1631 | leave_suid(); | |
9b7292ce | 1632 | } |
62e76326 | 1633 | |
9b7292ce | 1634 | sendSignal(); |
e99fa721 | 1635 | return 0; |
9b7292ce | 1636 | } |
62e76326 | 1637 | |
34492237 | 1638 | debugs(1,2, "Doing post-config initialization"); |
520e0073 | 1639 | leave_suid(); |
21b7990f | 1640 | RunRegisteredHere(RegisteredRunner::finalizeConfig); |
9487bae9 | 1641 | |
01ac0a5b EB |
1642 | if (IamMasterProcess()) { |
1643 | if (InDaemonMode()) { | |
28bca1f7 | 1644 | watch_child(cmdLine); |
01ac0a5b EB |
1645 | // NOTREACHED |
1646 | } else { | |
1647 | Instance::WriteOurPid(); | |
1648 | } | |
dbf55289 | 1649 | } |
2ae5c85f | 1650 | |
01ac0a5b EB |
1651 | StartUsingConfig(); |
1652 | enter_suid(); | |
1653 | ||
26ac0430 | 1654 | if (opt_create_swap_dirs) { |
9b7292ce | 1655 | setEffectiveUser(); |
04632397 | 1656 | debugs(0, DBG_CRITICAL, "Creating missing swap directories"); |
c8f4eac4 | 1657 | Store::Root().create(); |
6c1962dd | 1658 | |
9b7292ce | 1659 | return 0; |
9b7292ce | 1660 | } |
62e76326 | 1661 | |
96c2bb61 AR |
1662 | if (IamPrimaryProcess()) |
1663 | CpuAffinityCheck(); | |
1664 | CpuAffinityInit(); | |
1665 | ||
95564b0d | 1666 | /* init comm module */ |
1667 | comm_init(); | |
62e76326 | 1668 | |
6c1962dd | 1669 | #if USE_WIN32_SERVICE |
1670 | ||
9b7292ce | 1671 | WIN32_svcstatusupdate(SERVICE_START_PENDING, 10000); |
6c1962dd | 1672 | |
1673 | #endif | |
1674 | ||
9b7292ce | 1675 | mainInitialize(); |
4d64d74a | 1676 | |
6c1962dd | 1677 | #if USE_WIN32_SERVICE |
1678 | ||
9b7292ce | 1679 | WIN32_svcstatusupdate(SERVICE_RUNNING, 0); |
6c1962dd | 1680 | |
1681 | #endif | |
1682 | ||
9b7292ce | 1683 | /* main loop */ |
a553a5a3 | 1684 | EventLoop mainLoop; |
62e76326 | 1685 | |
0a720258 | 1686 | SignalEngine signalEngine; |
6c1962dd | 1687 | |
9688b0ae | 1688 | mainLoop.registerEngine(&signalEngine); |
62e76326 | 1689 | |
8ff3fa2e | 1690 | /* TODO: stop requiring the singleton here */ |
1691 | mainLoop.registerEngine(EventScheduler::GetInstance()); | |
62e76326 | 1692 | |
8ff3fa2e | 1693 | StoreRootEngine store_engine; |
615f9581 | 1694 | |
8ff3fa2e | 1695 | mainLoop.registerEngine(&store_engine); |
a774fd3f | 1696 | |
8ff3fa2e | 1697 | CommSelectEngine comm_engine; |
1698 | ||
8ff3fa2e | 1699 | mainLoop.registerEngine(&comm_engine); |
1700 | ||
bef81ea5 | 1701 | mainLoop.setPrimaryEngine(&comm_engine); |
1702 | ||
8ff3fa2e | 1703 | /* use the standard time service */ |
1704 | TimeEngine time_engine; | |
1705 | ||
1706 | mainLoop.setTimeService(&time_engine); | |
1707 | ||
7de94c8c | 1708 | if (IamCoordinatorProcess()) |
4299f876 | 1709 | AsyncJob::Start(Ipc::Coordinator::Instance()); |
095ec2b1 | 1710 | else if (UsingSmp() && (IamWorkerProcess() || IamDiskProcess())) |
4299f876 | 1711 | AsyncJob::Start(new Ipc::Strand); |
10cefb7b | 1712 | |
48d54e4d AJ |
1713 | /* at this point we are finished the synchronous startup. */ |
1714 | starting_up = 0; | |
1715 | ||
8ff3fa2e | 1716 | mainLoop.run(); |
1717 | ||
1718 | if (mainLoop.errcount == 10) | |
1719 | fatal_dump("Event loop exited with failure."); | |
1720 | ||
1721 | /* shutdown squid now */ | |
1722 | SquidShutdown(); | |
62e76326 | 1723 | |
9b7292ce | 1724 | /* NOTREACHED */ |
9b7292ce | 1725 | return 0; |
090089c4 | 1726 | } |
7690e8eb | 1727 | |
b8d8561b | 1728 | static void |
0673c0ba | 1729 | sendSignal(void) |
7690e8eb | 1730 | { |
0c7e529e | 1731 | StopUsingDebugLog(); |
258ac4d7 | 1732 | |
6c1962dd | 1733 | #if USE_WIN32_SERVICE |
886e99cd AR |
1734 | // WIN32_sendSignal() does not need the PID value to signal, |
1735 | // but we must exit if there is no valid PID (TODO: Why?). | |
e99fa721 EB |
1736 | (void)Instance::Other(); |
1737 | if (!opt_signal_service) | |
1738 | throw TexcHere("missing -n command line switch"); | |
1739 | WIN32_sendSignal(opt_send_signal); | |
1740 | #else | |
1741 | const auto pid = Instance::Other(); | |
1742 | if (kill(pid, opt_send_signal) && | |
1743 | /* ignore permissions if just running check */ | |
1744 | !(opt_send_signal == 0 && errno == EPERM)) { | |
1745 | const auto savedErrno = errno; | |
1746 | throw TexcHere(ToSBuf("failed to send signal ", opt_send_signal, | |
1747 | " to Squid instance with PID ", pid, ": ", xstrerr(savedErrno))); | |
7690e8eb | 1748 | } |
e99fa721 | 1749 | #endif |
fedac7e5 | 1750 | /* signal successfully sent */ |
fedac7e5 | 1751 | } |
f95b8144 | 1752 | |
7aa9bb3e | 1753 | #if !_SQUID_WINDOWS_ |
e18d7fdc | 1754 | /* |
1755 | * This function is run when Squid is in daemon mode, just | |
1756 | * before the parent forks and starts up the child process. | |
1757 | * It can be used for admin-specific tasks, such as notifying | |
1758 | * someone that Squid is (re)started. | |
1759 | */ | |
1760 | static void | |
1761 | mainStartScript(const char *prog) | |
1762 | { | |
ef364f64 | 1763 | char script[MAXPATHLEN]; |
e18d7fdc | 1764 | char *t; |
1765 | size_t sl = 0; | |
1766 | pid_t cpid; | |
1767 | pid_t rpid; | |
1768 | xstrncpy(script, prog, MAXPATHLEN); | |
62e76326 | 1769 | |
e18d7fdc | 1770 | if ((t = strrchr(script, '/'))) { |
62e76326 | 1771 | *(++t) = '\0'; |
1772 | sl = strlen(script); | |
e18d7fdc | 1773 | } |
62e76326 | 1774 | |
e18d7fdc | 1775 | xstrncpy(&script[sl], squid_start_script, MAXPATHLEN - sl); |
62e76326 | 1776 | |
e18d7fdc | 1777 | if ((cpid = fork()) == 0) { |
62e76326 | 1778 | /* child */ |
f75662c9 | 1779 | execl(script, squid_start_script, (char *)NULL); |
482aa790 | 1780 | _exit(-1); |
e18d7fdc | 1781 | } else { |
62e76326 | 1782 | do { |
dbf55289 CT |
1783 | PidStatus status; |
1784 | rpid = WaitForOnePid(cpid, status, 0); | |
62e76326 | 1785 | } while (rpid != cpid); |
e18d7fdc | 1786 | } |
1787 | } | |
1788 | ||
00e2479d AR |
1789 | /// Initiates shutdown sequence. Shutdown ends when the last running kids stops. |
1790 | static void | |
1791 | masterShutdownStart() | |
1792 | { | |
1793 | if (AvoidSignalAction("shutdown", do_shutdown)) | |
1794 | return; | |
1795 | debugs(1, 2, "received shutdown command"); | |
1796 | shutting_down = 1; | |
1797 | } | |
a50bfe93 | 1798 | |
00e2479d | 1799 | /// Initiates reconfiguration sequence. See also: masterReconfigureFinish(). |
f95b8144 | 1800 | static void |
00e2479d | 1801 | masterReconfigureStart() |
f95b8144 | 1802 | { |
00e2479d AR |
1803 | if (AvoidSignalAction("reconfiguration", do_reconfigure)) |
1804 | return; | |
1805 | debugs(1, 2, "received reconfiguration command"); | |
1806 | reconfiguring = 1; | |
1807 | TheKids.forgetAllFailures(); | |
1808 | // TODO: hot-reconfiguration of the number of kids, kids revival delay, | |
1809 | // PID file location, etc. | |
1810 | } | |
a6201b10 | 1811 | |
00e2479d AR |
1812 | /// Ends reconfiguration sequence started by masterReconfigureStart(). |
1813 | static void | |
1814 | masterReconfigureFinish() | |
1815 | { | |
1816 | reconfiguring = 0; | |
1817 | } | |
1818 | ||
1819 | /// Reacts to the kid revival alarm. | |
1820 | static void | |
1821 | masterReviveKids() | |
1822 | { | |
1823 | if (AvoidSignalAction("kids revival", do_revive_kids)) | |
1824 | return; | |
1825 | debugs(1, 2, "woke up after ~" << Config.hopelessKidRevivalDelay << "s"); | |
1826 | // nothing to do here -- actual revival happens elsewhere in the main loop | |
1827 | // the alarm was needed just to wake us up so that we do a loop iteration | |
1828 | } | |
1829 | ||
1830 | static void | |
1831 | masterCheckAndBroadcastSignals() | |
1832 | { | |
dbf55289 | 1833 | if (do_shutdown) |
00e2479d AR |
1834 | masterShutdownStart(); |
1835 | if (do_reconfigure) | |
1836 | masterReconfigureStart(); | |
1837 | if (do_revive_kids) | |
1838 | masterReviveKids(); | |
1839 | ||
1840 | // emulate multi-step reconfiguration assumed by AvoidSignalAction() | |
1841 | if (reconfiguring) | |
1842 | masterReconfigureFinish(); | |
62e76326 | 1843 | |
dbf55289 CT |
1844 | BroadcastSignalIfAny(DebugSignal); |
1845 | BroadcastSignalIfAny(RotateSignal); | |
1846 | BroadcastSignalIfAny(ReconfigureSignal); | |
1847 | BroadcastSignalIfAny(ShutdownSignal); | |
00e2479d AR |
1848 | ReviveKidsSignal = -1; // alarms are not broadcasted |
1849 | } | |
1850 | ||
1851 | /// Maintains the following invariant: An alarm should be scheduled when and | |
1852 | /// only when there are hopeless kid(s) that cannot be immediately revived. | |
1853 | static void | |
1854 | masterMaintainKidRevivalSchedule() | |
1855 | { | |
1856 | const auto nextCheckDelay = TheKids.forgetOldFailures(); | |
1857 | assert(nextCheckDelay >= 0); | |
1858 | (void)alarm(static_cast<unsigned int>(nextCheckDelay)); // resets or cancels | |
1859 | if (nextCheckDelay) | |
1860 | debugs(1, 2, "will recheck hopeless kids in " << nextCheckDelay << " seconds"); | |
dbf55289 | 1861 | } |
62e76326 | 1862 | |
dbf55289 CT |
1863 | static inline bool |
1864 | masterSignaled() | |
1865 | { | |
00e2479d AR |
1866 | return (DebugSignal > 0 || RotateSignal > 0 || ReconfigureSignal > 0 || |
1867 | ShutdownSignal > 0 || ReviveKidsSignal > 0); | |
dbf55289 | 1868 | } |
62e76326 | 1869 | |
57402eed AR |
1870 | /// makes the caller a daemon process running in the background |
1871 | static void | |
1872 | GoIntoBackground() | |
d73c6e83 AW |
1873 | { |
1874 | pid_t pid; | |
1875 | if ((pid = fork()) < 0) { | |
1876 | int xerrno = errno; | |
6b9c8755 | 1877 | throw TexcHere(ToSBuf("failed to fork(2) the master process: ", xstrerr(xerrno))); |
d73c6e83 AW |
1878 | } else if (pid > 0) { |
1879 | // parent | |
1880 | exit(EXIT_SUCCESS); | |
1881 | } | |
6b9c8755 | 1882 | // child, running as a background daemon |
e6dbb95a | 1883 | Must(setsid() > 0); // ought to succeed after fork() |
d73c6e83 | 1884 | } |
00e2479d AR |
1885 | |
1886 | static void | |
1887 | masterExit() | |
1888 | { | |
1889 | if (TheKids.someSignaled(SIGINT) || TheKids.someSignaled(SIGTERM)) { | |
1890 | syslog(LOG_ALERT, "Exiting due to unexpected forced shutdown"); | |
1891 | exit(EXIT_FAILURE); | |
1892 | } | |
1893 | ||
1894 | if (TheKids.allHopeless()) { | |
1895 | syslog(LOG_ALERT, "Exiting due to repeated, frequent failures"); | |
1896 | exit(EXIT_FAILURE); | |
1897 | } | |
1898 | ||
1899 | exit(EXIT_SUCCESS); | |
1900 | } | |
1901 | ||
57402eed | 1902 | #endif /* !_SQUID_WINDOWS_ */ |
d73c6e83 | 1903 | |
dbf55289 | 1904 | static void |
28bca1f7 | 1905 | watch_child(const CommandLine &masterCommand) |
dbf55289 CT |
1906 | { |
1907 | #if !_SQUID_WINDOWS_ | |
e3a3b845 | 1908 | pid_t pid; |
c99c5397 | 1909 | #ifdef TIOCNOTTY |
1910 | ||
54f742e7 | 1911 | int i; |
c99c5397 | 1912 | #endif |
1913 | ||
742724a4 | 1914 | int nullfd; |
62e76326 | 1915 | |
00e2479d AR |
1916 | // TODO: zero values are not supported because they result in |
1917 | // misconfigured SMP Squid instances running forever, endlessly | |
1918 | // restarting each dying kid. | |
1919 | if (Config.hopelessKidRevivalDelay <= 0) | |
1920 | throw TexcHere("hopeless_kid_revival_delay must be positive"); | |
1921 | ||
01ac0a5b EB |
1922 | enter_suid(); |
1923 | ||
7dbca7a4 | 1924 | openlog(APP_SHORTNAME, LOG_PID | LOG_NDELAY | LOG_CONS, LOG_LOCAL4); |
62e76326 | 1925 | |
d73c6e83 AW |
1926 | if (!opt_foreground) |
1927 | GoIntoBackground(); | |
62e76326 | 1928 | |
efd900cb | 1929 | closelog(); |
62e76326 | 1930 | |
54f742e7 | 1931 | #ifdef TIOCNOTTY |
62e76326 | 1932 | |
c4aefe96 | 1933 | if ((i = open("/dev/tty", O_RDWR | O_TEXT)) >= 0) { |
62e76326 | 1934 | ioctl(i, TIOCNOTTY, NULL); |
1935 | close(i); | |
54f742e7 | 1936 | } |
62e76326 | 1937 | |
54f742e7 | 1938 | #endif |
b05490a8 | 1939 | |
7f6ffd15 | 1940 | /* |
1941 | * RBCOLLINS - if cygwin stackdumps when squid is run without | |
1942 | * -N, check the cygwin1.dll version, it needs to be AT LEAST | |
1943 | * 1.1.3. execvp had a bit overflow error in a loop.. | |
1944 | */ | |
742724a4 | 1945 | /* Connect stdio to /dev/null in daemon mode */ |
4da086c4 | 1946 | nullfd = open(_PATH_DEVNULL, O_RDWR | O_TEXT); |
62e76326 | 1947 | |
b69e9ffa AJ |
1948 | if (nullfd < 0) { |
1949 | int xerrno = errno; | |
1950 | fatalf(_PATH_DEVNULL " %s\n", xstrerr(xerrno)); | |
1951 | } | |
e4a1325e | 1952 | |
742724a4 | 1953 | dup2(nullfd, 0); |
62e76326 | 1954 | |
62493678 | 1955 | if (Debug::log_stderr < 0) { |
62e76326 | 1956 | dup2(nullfd, 1); |
1957 | dup2(nullfd, 2); | |
742724a4 | 1958 | } |
62e76326 | 1959 | |
01ac0a5b | 1960 | leave_suid(); |
e99fa721 | 1961 | Instance::WriteOurPid(); |
01ac0a5b EB |
1962 | StartUsingConfig(); |
1963 | enter_suid(); | |
dbf55289 CT |
1964 | |
1965 | #if defined(_SQUID_LINUX_THREADS_) | |
1966 | squid_signal(SIGQUIT, rotate_logs, 0); | |
1967 | squid_signal(SIGTRAP, sigusr2_handle, 0); | |
1968 | #else | |
1969 | squid_signal(SIGUSR1, rotate_logs, 0); | |
1970 | squid_signal(SIGUSR2, sigusr2_handle, 0); | |
1971 | #endif | |
1972 | ||
1973 | squid_signal(SIGHUP, reconfigure, 0); | |
1974 | ||
1975 | squid_signal(SIGTERM, master_shutdown, 0); | |
00e2479d | 1976 | squid_signal(SIGALRM, master_revive_kids, 0); |
dbf55289 CT |
1977 | squid_signal(SIGINT, master_shutdown, 0); |
1978 | #ifdef SIGTTIN | |
1979 | squid_signal(SIGTTIN, master_shutdown, 0); | |
1980 | #endif | |
ca4b9ee6 | 1981 | |
13aeac35 AR |
1982 | if (Config.workers > 128) { |
1983 | syslog(LOG_ALERT, "Suspiciously high workers value: %d", | |
5667a628 | 1984 | Config.workers); |
007d775d | 1985 | // but we keep going in hope that user knows best |
5667a628 | 1986 | } |
095ec2b1 AR |
1987 | TheKids.init(); |
1988 | ||
00e2479d AR |
1989 | configured_once = 1; |
1990 | ||
a2515f86 | 1991 | syslog(LOG_NOTICE, "Squid Parent: will start %d kids", (int)TheKids.count()); |
007d775d AR |
1992 | |
1993 | // keep [re]starting kids until it is time to quit | |
f95b8144 | 1994 | for (;;) { |
dbf55289 | 1995 | bool mainStartScriptCalled = false; |
007d775d | 1996 | // start each kid that needs to be [re]started; once |
dbf55289 | 1997 | for (int i = TheKids.count() - 1; i >= 0 && !shutting_down; --i) { |
007d775d | 1998 | Kid& kid = TheKids.get(i); |
ca4b9ee6 | 1999 | if (!kid.shouldRestart()) |
007d775d AR |
2000 | continue; |
2001 | ||
dbf55289 | 2002 | if (!mainStartScriptCalled) { |
28bca1f7 | 2003 | mainStartScript(masterCommand.arg0()); |
dbf55289 CT |
2004 | mainStartScriptCalled = true; |
2005 | } | |
2006 | ||
28bca1f7 EB |
2007 | // These are only needed by the forked child below, but let's keep |
2008 | // them out of that "no man's land" between fork() and execvp(). | |
2009 | auto kidCommand = masterCommand; | |
2010 | kidCommand.resetArg0(kid.processName().c_str()); | |
2011 | assert(!kidCommand.hasOption(optKid)); | |
2012 | kidCommand.pushFrontOption("--kid", kid.gist().c_str()); | |
2013 | ||
007d775d AR |
2014 | if ((pid = fork()) == 0) { |
2015 | /* child */ | |
2016 | openlog(APP_SHORTNAME, LOG_PID | LOG_NDELAY | LOG_CONS, LOG_LOCAL4); | |
28bca1f7 | 2017 | (void)execvp(masterCommand.arg0(), kidCommand.argv()); |
b69e9ffa AJ |
2018 | int xerrno = errno; |
2019 | syslog(LOG_ALERT, "execvp failed: %s", xstrerr(xerrno)); | |
007d775d AR |
2020 | } |
2021 | ||
2022 | kid.start(pid); | |
095ec2b1 | 2023 | syslog(LOG_NOTICE, "Squid Parent: %s process %d started", |
28bca1f7 | 2024 | kid.processName().c_str(), pid); |
62e76326 | 2025 | } |
2026 | ||
2027 | /* parent */ | |
7dbca7a4 | 2028 | openlog(APP_SHORTNAME, LOG_PID | LOG_NDELAY | LOG_CONS, LOG_LOCAL4); |
62e76326 | 2029 | |
dbf55289 CT |
2030 | // If Squid received a signal while checking for dying kids (below) or |
2031 | // starting new kids (above), then do a fast check for a new dying kid | |
2032 | // (WaitForAnyPid with the WNOHANG option) and continue to forward | |
2033 | // signals to kids. Otherwise, wait for a kid to die or for a signal | |
2034 | // to abort the blocking WaitForAnyPid() call. | |
2035 | // With the WNOHANG option, we could check whether WaitForAnyPid() was | |
5c634111 | 2036 | // aborted by a dying kid or a signal, but it is not required: The |
dbf55289 CT |
2037 | // next do/while loop will check again for any dying kids. |
2038 | int waitFlag = 0; | |
2039 | if (masterSignaled()) | |
2040 | waitFlag = WNOHANG; | |
57402eed | 2041 | PidStatus status; |
dbf55289 | 2042 | pid = WaitForAnyPid(status, waitFlag); |
00e2479d | 2043 | getCurrentTime(); |
dbf55289 CT |
2044 | |
2045 | // check for a stopped kid | |
00e2479d | 2046 | if (Kid *kid = pid > 0 ? TheKids.find(pid) : nullptr) |
dbf55289 | 2047 | kid->stop(status); |
00e2479d | 2048 | else if (pid > 0) |
dbf55289 | 2049 | syslog(LOG_NOTICE, "Squid Parent: unknown child process %d exited", pid); |
00e2479d AR |
2050 | |
2051 | masterCheckAndBroadcastSignals(); | |
2052 | masterMaintainKidRevivalSchedule(); | |
62e76326 | 2053 | |
ca4b9ee6 | 2054 | if (!TheKids.someRunning() && !TheKids.shouldRestartSome()) { |
520e0073 | 2055 | leave_suid(); |
21b7990f AR |
2056 | // XXX: Master process has no main loop and, hence, should not call |
2057 | // RegisteredRunner::startShutdown which promises a loop iteration. | |
2058 | RunRegisteredHere(RegisteredRunner::finishShutdown); | |
520e0073 | 2059 | enter_suid(); |
00e2479d | 2060 | masterExit(); |
007d775d | 2061 | } |
f95b8144 | 2062 | } |
62e76326 | 2063 | |
bbe199dc | 2064 | /* NOTREACHED */ |
7aa9bb3e | 2065 | #endif /* _SQUID_WINDOWS_ */ |
a572d8be | 2066 | |
f95b8144 | 2067 | } |
fff6ad65 | 2068 | |
9ec1a1dc | 2069 | static void |
8ff3fa2e | 2070 | SquidShutdown() |
fff6ad65 | 2071 | { |
d71e4674 AR |
2072 | /* XXX: This function is called after the main loop has quit, which |
2073 | * means that no AsyncCalls would be called, including close handlers. | |
2074 | * TODO: We need to close/shut/free everything that needs calls before | |
2075 | * exiting the loop. | |
26ac0430 | 2076 | */ |
d71e4674 | 2077 | |
6c1962dd | 2078 | #if USE_WIN32_SERVICE |
2079 | WIN32_svcstatusupdate(SERVICE_STOP_PENDING, 10000); | |
2080 | #endif | |
2081 | ||
e0236918 | 2082 | debugs(1, DBG_IMPORTANT, "Shutting down..."); |
95d2589c | 2083 | #if USE_SSL_CRTD |
23da195f | 2084 | Ssl::Helper::Shutdown(); |
2cef0ca6 | 2085 | #endif |
cb4f4424 | 2086 | #if USE_OPENSSL |
23da195f | 2087 | Ssl::CertValidationHelper::Shutdown(); |
95d2589c | 2088 | #endif |
95a83c22 | 2089 | redirectShutdown(); |
2090 | externalAclShutdown(); | |
65d448bc | 2091 | icpClosePorts(); |
d723bf6b | 2092 | #if USE_HTCP |
65d448bc | 2093 | htcpClosePorts(); |
d723bf6b | 2094 | #endif |
59ad6d31 | 2095 | #if SQUID_SNMP |
65d448bc | 2096 | snmpClosePorts(); |
320e9f36 | 2097 | #endif |
eb824054 | 2098 | #if USE_WCCP |
62e76326 | 2099 | |
320e9f36 | 2100 | wccpConnectionClose(); |
d723bf6b | 2101 | #endif |
0b0cfcf2 | 2102 | #if USE_WCCPv2 |
2103 | ||
2104 | wccp2ConnectionClose(); | |
2105 | #endif | |
62e76326 | 2106 | |
fff6ad65 | 2107 | releaseServerSockets(); |
d723bf6b | 2108 | commCloseAllSockets(); |
79039294 AR |
2109 | |
2110 | #if USE_SQUID_ESI | |
2111 | Esi::Clean(); | |
2112 | #endif | |
2113 | ||
9a0a18de | 2114 | #if USE_DELAY_POOLS |
b67e2c8c | 2115 | DelayPools::FreePools(); |
515ec4dc | 2116 | #endif |
2f1431ea | 2117 | #if USE_AUTH |
0bcb6908 | 2118 | authenticateReset(); |
2f1431ea | 2119 | #endif |
6c1962dd | 2120 | #if USE_WIN32_SERVICE |
2121 | ||
2122 | WIN32_svcstatusupdate(SERVICE_STOP_PENDING, 10000); | |
2123 | #endif | |
e2b80c5b CT |
2124 | #if ICAP_CLIENT |
2125 | Adaptation::Icap::TheConfig.freeService(); | |
2126 | #endif | |
62e76326 | 2127 | |
c8f4eac4 | 2128 | Store::Root().sync(); /* Flush pending object writes/unlinks */ |
4d075ba0 | 2129 | |
f53969cc | 2130 | unlinkdClose(); /* after sync/flush. NOP if !USE_UNLINKD */ |
fc68f6b1 | 2131 | |
fff6ad65 | 2132 | storeDirWriteCleanLogs(0); |
2133 | PrintRusage(); | |
2134 | dumpMallocStats(); | |
f53969cc | 2135 | Store::Root().sync(); /* Flush log writes */ |
fff6ad65 | 2136 | storeLogClose(); |
2137 | accessLogClose(); | |
f53969cc | 2138 | Store::Root().sync(); /* Flush log close */ |
59b2d47f | 2139 | StoreFileSystem::FreeAllFs(); |
b9ae18aa | 2140 | DiskIOModule::FreeAllModules(); |
afec404b | 2141 | #if LEAK_CHECK_MODE && 0 /* doesn't work at the moment */ |
62e76326 | 2142 | |
fff6ad65 | 2143 | configFreeMemory(); |
2144 | storeFreeMemory(); | |
33ab18e8 | 2145 | /*stmemFreeMemory(); */ |
fff6ad65 | 2146 | netdbFreeMemory(); |
2147 | ipcacheFreeMemory(); | |
2148 | fqdncacheFreeMemory(); | |
2149 | asnFreeMemory(); | |
26a369ba | 2150 | clientdbFreeMemory(); |
d2db411c | 2151 | statFreeMemory(); |
f1fc2a8d | 2152 | eventFreeMemory(); |
c68e9c6b | 2153 | mimeFreeMemory(); |
2154 | errorClean(); | |
33ab18e8 | 2155 | #endif |
2745fea5 | 2156 | Store::FreeMemory(); |
57fc379e | 2157 | |
fff6ad65 | 2158 | fdDumpOpen(); |
62e76326 | 2159 | |
236d1779 | 2160 | comm_exit(); |
62e76326 | 2161 | |
21b7990f | 2162 | RunRegisteredHere(RegisteredRunner::finishShutdown); |
62e76326 | 2163 | |
553d498c AJ |
2164 | memClean(); |
2165 | ||
e0236918 | 2166 | debugs(1, DBG_IMPORTANT, "Squid Cache (Version " << version_string << "): Exiting normally."); |
62e76326 | 2167 | |
0cfa98cb | 2168 | /* |
2169 | * DPW 2006-10-23 | |
2170 | * We used to fclose(debug_log) here if it was set, but then | |
2171 | * we forgot to set it to NULL. That caused some coredumps | |
2172 | * because exit() ends up calling a bunch of destructors and | |
2173 | * such. So rather than forcing the debug_log to close, we'll | |
2174 | * leave it open so that those destructors can write some | |
2175 | * debugging if necessary. The file will be closed anyway when | |
2176 | * the process truly exits. | |
2177 | */ | |
62e76326 | 2178 | |
ae1feb30 | 2179 | exit(shutdown_status); |
fff6ad65 | 2180 | } |
bef81ea5 | 2181 |