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30a4f2a8 | 1 | /* |
1f7b830e | 2 | * Copyright (C) 1996-2025 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" |
4eac3407 | 14 | #include "acl/forward.h" |
50a43a49 | 15 | #include "anyp/UriScheme.h" |
5c112575 AJ |
16 | #include "auth/Config.h" |
17 | #include "auth/Gadgets.h" | |
ae578099 | 18 | #include "AuthReg.h" |
6d57128b | 19 | #include "base/RunnersRegistry.h" |
e0d28505 | 20 | #include "base/Subscription.h" |
3d93a84d | 21 | #include "base/TextException.h" |
fc54b8d2 | 22 | #include "cache_cf.h" |
3c670b50 | 23 | #include "CachePeer.h" |
fc54b8d2 FC |
24 | #include "client_db.h" |
25 | #include "client_side.h" | |
d841c88d | 26 | #include "comm.h" |
28bca1f7 | 27 | #include "CommandLine.h" |
62ee09ca | 28 | #include "ConfigParser.h" |
96c2bb61 | 29 | #include "CpuAffinity.h" |
675b8408 | 30 | #include "debug/Messages.h" |
582c2af2 | 31 | #include "DiskIO/DiskIOModule.h" |
4a3b98d7 | 32 | #include "dns/forward.h" |
aa839030 | 33 | #include "errorpage.h" |
a553a5a3 | 34 | #include "event.h" |
35 | #include "EventLoop.h" | |
62ee09ca | 36 | #include "ExternalACL.h" |
fc54b8d2 | 37 | #include "fd.h" |
31971e6a | 38 | #include "format/Token.h" |
fc54b8d2 | 39 | #include "fqdncache.h" |
602d9612 | 40 | #include "fs/Module.h" |
b3f7fd88 | 41 | #include "fs_io.h" |
eb13c21e | 42 | #include "FwdState.h" |
af69c635 | 43 | #include "globals.h" |
582c2af2 | 44 | #include "htcp.h" |
d3dddfb5 | 45 | #include "http/Stream.h" |
fc54b8d2 | 46 | #include "HttpHeader.h" |
582c2af2 FC |
47 | #include "HttpReply.h" |
48 | #include "icmp/IcmpSquid.h" | |
49 | #include "icmp/net_db.h" | |
e6ccf245 | 50 | #include "ICP.h" |
e99fa721 | 51 | #include "Instance.h" |
602d9612 | 52 | #include "ip/tools.h" |
10cefb7b | 53 | #include "ipc/Coordinator.h" |
582c2af2 | 54 | #include "ipc/Kids.h" |
10cefb7b | 55 | #include "ipc/Strand.h" |
602d9612 | 56 | #include "ipcache.h" |
b65ce00c | 57 | #include "mime.h" |
fc54b8d2 | 58 | #include "neighbors.h" |
d5f21615 | 59 | #include "parser/Tokenizer.h" |
28bca1f7 | 60 | #include "Parsing.h" |
582c2af2 | 61 | #include "pconn.h" |
602d9612 | 62 | #include "PeerSelectState.h" |
8b082ed9 | 63 | #include "protos.h" |
c548327a | 64 | #include "redirect.h" |
fc54b8d2 | 65 | #include "refresh.h" |
e99fa721 | 66 | #include "sbuf/Stream.h" |
d87f6b1d | 67 | #include "SBufStatsAction.h" |
4d5904f7 | 68 | #include "SquidConfig.h" |
fc54b8d2 | 69 | #include "stat.h" |
e4f1fdae | 70 | #include "StatCounters.h" |
582c2af2 | 71 | #include "Store.h" |
2745fea5 | 72 | #include "store/Disks.h" |
602d9612 A |
73 | #include "store_log.h" |
74 | #include "StoreFileSystem.h" | |
98cacedb | 75 | #include "time/Engine.h" |
602d9612 | 76 | #include "tools.h" |
b6b42084 | 77 | #include "unlinkd.h" |
983e1055 | 78 | #include "windows_service.h" |
44a47c6e | 79 | |
582c2af2 FC |
80 | #if USE_ADAPTATION |
81 | #include "adaptation/Config.h" | |
82 | #endif | |
83 | #if USE_ECAP | |
84 | #include "adaptation/ecap/Config.h" | |
85 | #endif | |
86 | #if ICAP_CLIENT | |
87 | #include "adaptation/icap/Config.h" | |
88 | #include "adaptation/icap/icap_log.h" | |
89 | #endif | |
582c2af2 FC |
90 | #if USE_DELAY_POOLS |
91 | #include "ClientDelayConfig.h" | |
92 | #endif | |
93 | #if USE_DELAY_POOLS | |
94 | #include "DelayPools.h" | |
95 | #endif | |
57afc994 AR |
96 | #if USE_LOADABLE_MODULES |
97 | #include "LoadableModules.h" | |
98 | #endif | |
cb4f4424 | 99 | #if USE_OPENSSL |
95d2589c | 100 | #include "ssl/context_storage.h" |
602d9612 | 101 | #include "ssl/helper.h" |
95d2589c | 102 | #endif |
b958cb0f | 103 | #if ICAP_CLIENT |
26cc52cb | 104 | #include "adaptation/icap/Config.h" |
b958cb0f | 105 | #endif |
6e5db507 | 106 | #if USE_ECAP |
1f3c65fc | 107 | #include "adaptation/ecap/Config.h" |
6e5db507 | 108 | #endif |
b958cb0f AR |
109 | #if USE_ADAPTATION |
110 | #include "adaptation/Config.h" | |
111 | #endif | |
9c0a2256 FC |
112 | #if SQUID_SNMP |
113 | #include "snmp_core.h" | |
114 | #endif | |
7b5b7ba8 | 115 | |
1a30fdf5 | 116 | #include <cerrno> |
68dbbe5d AJ |
117 | #if HAVE_GETOPT_H |
118 | #include <getopt.h> | |
119 | #endif | |
25f98340 AJ |
120 | #if HAVE_PATHS_H |
121 | #include <paths.h> | |
122 | #endif | |
582c2af2 FC |
123 | #if HAVE_SYS_WAIT_H |
124 | #include <sys/wait.h> | |
125 | #endif | |
1a774556 | 126 | |
25f98340 | 127 | #if USE_WIN32_SERVICE |
1a774556 | 128 | #include <process.h> |
129 | ||
130 | static int opt_install_service = FALSE; | |
131 | static int opt_remove_service = FALSE; | |
1a774556 | 132 | static int opt_command_line = FALSE; |
82afb125 | 133 | void WIN32_svcstatusupdate(DWORD, DWORD); |
1a774556 | 134 | void WINAPI WIN32_svcHandler(DWORD); |
1a774556 | 135 | #endif |
136 | ||
cf2155f2 | 137 | static int opt_signal_service = FALSE; |
aee3523a | 138 | static char *opt_syslog_facility = nullptr; |
f53969cc | 139 | static int icpPortNumOverride = 1; /* Want to detect "-u 0" */ |
e13ee7ad | 140 | static int configured_once = 0; |
30a4f2a8 | 141 | #if MALLOC_DBG |
4d64d74a | 142 | static int malloc_debug_level = 0; |
30a4f2a8 | 143 | #endif |
5cd39a10 | 144 | static volatile int do_reconfigure = 0; |
145 | static volatile int do_rotate = 0; | |
2681d383 | 146 | static volatile int do_shutdown = 0; |
00e2479d | 147 | static volatile int do_revive_kids = 0; |
24885773 | 148 | static volatile int shutdown_status = EXIT_SUCCESS; |
dbf55289 | 149 | static volatile int do_handle_stopped_child = 0; |
4d7add01 | 150 | |
a2c48c98 AR |
151 | static int RotateSignal = -1; |
152 | static int ReconfigureSignal = -1; | |
153 | static int ShutdownSignal = -1; | |
00e2479d | 154 | static int ReviveKidsSignal = -1; |
a2c48c98 | 155 | |
5cd39a10 | 156 | static void mainRotate(void); |
d71e4674 AR |
157 | static void mainReconfigureStart(void); |
158 | static void mainReconfigureFinish(void*); | |
f5b8bbc4 | 159 | static void mainInitialize(void); |
f5b8bbc4 | 160 | static void usage(void); |
28bca1f7 | 161 | static void mainHandleCommandLineOption(const int optId, const char *optValue); |
f5b8bbc4 | 162 | static void sendSignal(void); |
163 | static void serverConnectionsOpen(void); | |
d71e4674 | 164 | static void serverConnectionsClose(void); |
28bca1f7 | 165 | static void watch_child(const CommandLine &); |
85407535 | 166 | static void setEffectiveUser(void); |
8ff3fa2e | 167 | static void SquidShutdown(void); |
b6a2f15e | 168 | static void mainSetCwd(void); |
85407535 | 169 | |
7aa9bb3e | 170 | #if !_SQUID_WINDOWS_ |
e18d7fdc | 171 | static const char *squid_start_script = "squid_start"; |
b293c4d8 | 172 | #endif |
e18d7fdc | 173 | |
9bc73deb | 174 | #if TEST_ACCESS |
175 | #include "test_access.c" | |
176 | #endif | |
177 | ||
63be0a78 | 178 | /** temporary thunk across to the unrefactored store interface */ |
8ff3fa2e | 179 | |
180 | class StoreRootEngine : public AsyncEngine | |
181 | { | |
182 | ||
183 | public: | |
337b9aa4 | 184 | int checkEvents(int) override { |
8ff3fa2e | 185 | Store::Root().callback(); |
186 | return EVENT_IDLE; | |
187 | }; | |
188 | }; | |
189 | ||
9688b0ae | 190 | class SignalEngine: public AsyncEngine |
a553a5a3 | 191 | { |
192 | ||
193 | public: | |
337b9aa4 | 194 | int checkEvents(int timeout) override; |
a553a5a3 | 195 | |
196 | private: | |
0a720258 AR |
197 | static void StopEventLoop(void *) { |
198 | if (EventLoop::Running) | |
199 | EventLoop::Running->stop(); | |
a553a5a3 | 200 | } |
201 | ||
d442618d AJ |
202 | static void FinalShutdownRunners(void *) { |
203 | RunRegisteredHere(RegisteredRunner::endingShutdown); | |
204 | ||
205 | // XXX: this should be a Runner. | |
206 | #if USE_AUTH | |
207 | /* detach the auth components (only do this on full shutdown) */ | |
208 | Auth::Scheme::FreeAll(); | |
209 | #endif | |
210 | ||
aee3523a | 211 | eventAdd("SquidTerminate", &StopEventLoop, nullptr, 0, 1, false); |
d442618d AJ |
212 | } |
213 | ||
9688b0ae | 214 | void doShutdown(time_t wait); |
dbf55289 | 215 | void handleStoppedChild(); |
a553a5a3 | 216 | }; |
217 | ||
9688b0ae | 218 | int |
ced8def3 | 219 | SignalEngine::checkEvents(int) |
a553a5a3 | 220 | { |
39d48b4f AR |
221 | if (do_reconfigure) |
222 | mainReconfigureStart(); | |
223 | else if (do_rotate) | |
a553a5a3 | 224 | mainRotate(); |
39d48b4f | 225 | else if (do_shutdown) |
9688b0ae | 226 | doShutdown(do_shutdown > 0 ? (int) Config.shutdownLifetime : 0); |
39d48b4f | 227 | if (do_handle_stopped_child) |
dbf55289 | 228 | handleStoppedChild(); |
9688b0ae | 229 | return EVENT_IDLE; |
230 | } | |
a553a5a3 | 231 | |
39d48b4f AR |
232 | /// Decides whether the signal-controlled action X should be delayed, canceled, |
233 | /// or executed immediately. Clears do_X (via signalVar) as needed. | |
234 | static bool | |
235 | AvoidSignalAction(const char *description, volatile int &signalVar) | |
236 | { | |
237 | const char *avoiding = "delaying"; | |
238 | const char *currentEvent = "none"; | |
239 | if (shutting_down) { | |
240 | currentEvent = "shutdown"; | |
241 | avoiding = "canceling"; | |
b4db757f AJ |
242 | // do not avoid repeated shutdown signals |
243 | // which just means the user wants to skip/abort shutdown timeouts | |
244 | if (strcmp(currentEvent, description) == 0) | |
245 | return false; | |
39d48b4f AR |
246 | signalVar = 0; |
247 | } | |
248 | else if (!configured_once) | |
249 | currentEvent = "startup"; | |
250 | else if (reconfiguring) | |
251 | currentEvent = "reconfiguration"; | |
252 | else { | |
253 | signalVar = 0; | |
254 | return false; // do not avoid (i.e., execute immediately) | |
255 | // the caller may produce a signal-specific debugging message | |
256 | } | |
257 | ||
258 | debugs(1, DBG_IMPORTANT, avoiding << ' ' << description << | |
259 | " request during " << currentEvent); | |
260 | return true; | |
261 | } | |
262 | ||
9688b0ae | 263 | void |
264 | SignalEngine::doShutdown(time_t wait) | |
265 | { | |
39d48b4f AR |
266 | if (AvoidSignalAction("shutdown", do_shutdown)) |
267 | return; | |
268 | ||
c59baaa8 EB |
269 | debugs(1, Important(2), "Preparing for shutdown after " << statCounter.client_http.requests << " requests"); |
270 | debugs(1, Important(3), "Waiting " << wait << " seconds for active connections to finish"); | |
8ff3fa2e | 271 | |
dbf55289 | 272 | if (shutting_down) { |
dbf55289 CT |
273 | // Already a shutdown signal has received and shutdown is in progress. |
274 | // Shutdown as soon as possible. | |
275 | wait = 0; | |
5c634111 | 276 | } else { |
dbf55289 | 277 | shutting_down = 1; |
9688b0ae | 278 | |
dbf55289 CT |
279 | /* run the closure code which can be shared with reconfigure */ |
280 | serverConnectionsClose(); | |
dbf55289 CT |
281 | |
282 | RunRegisteredHere(RegisteredRunner::startShutdown); | |
283 | } | |
284 | ||
285 | #if USE_WIN32_SERVICE | |
5c634111 | 286 | WIN32_svcstatusupdate(SERVICE_STOP_PENDING, (wait + 1) * 1000); |
2f1431ea | 287 | #endif |
21b7990f | 288 | |
d442618d | 289 | eventAdd("SquidShutdown", &FinalShutdownRunners, this, (double) (wait + 1), 1, false); |
a553a5a3 | 290 | } |
291 | ||
dbf55289 CT |
292 | void |
293 | SignalEngine::handleStoppedChild() | |
294 | { | |
39d48b4f AR |
295 | // no AvoidSignalAction() call: This code can run at any time because it |
296 | // does not depend on Squid state. It does not need debugging because it | |
297 | // handles an "internal" signal, not an external/admin command. | |
298 | do_handle_stopped_child = 0; | |
dbf55289 CT |
299 | #if !_SQUID_WINDOWS_ |
300 | PidStatus status; | |
301 | pid_t pid; | |
302 | ||
303 | do { | |
304 | pid = WaitForAnyPid(status, WNOHANG); | |
305 | ||
306 | #if HAVE_SIGACTION | |
307 | ||
308 | } while (pid > 0); | |
309 | ||
310 | #else | |
311 | ||
5c634111 SM |
312 | } |
313 | while (pid > 0 || (pid < 0 && errno == EINTR)); | |
dbf55289 CT |
314 | #endif |
315 | #endif | |
316 | } | |
317 | ||
b8d8561b | 318 | static void |
0673c0ba | 319 | usage(void) |
ccff9601 | 320 | { |
0ee4272b | 321 | fprintf(stderr, |
68dbbe5d | 322 | "Usage: %s [-cdzCFNRVYX] [-n name] [-s | -l facility] [-f config-file] [-[au] port] [-k signal]" |
0e657244 | 323 | #if USE_WIN32_SERVICE |
cf2155f2 | 324 | "[-ir] [-O CommandLine]" |
0e657244 | 325 | #endif |
68dbbe5d AJ |
326 | "\n" |
327 | " -h | --help Print help message.\n" | |
328 | " -v | --version Print version details.\n" | |
cf2155f2 | 329 | "\n" |
62e76326 | 330 | " -a port Specify HTTP port number (default: %d).\n" |
331 | " -d level Write debugging to stderr also.\n" | |
332 | " -f file Use given config-file instead of\n" | |
333 | " %s\n" | |
0e657244 | 334 | #if USE_WIN32_SERVICE |
335 | " -i Installs as a Windows Service (see -n option).\n" | |
336 | #endif | |
98fcbb0e AJ |
337 | " -k reconfigure|rotate|shutdown|" |
338 | #ifdef SIGTTIN | |
339 | "restart|" | |
340 | #endif | |
341 | "interrupt|kill|debug|check|parse\n" | |
62e76326 | 342 | " Parse configuration file, then send signal to \n" |
343 | " running copy (except -k parse) and exit.\n" | |
cf2155f2 AJ |
344 | " -n name Specify service name to use for service operations\n" |
345 | " default is: " APP_SHORTNAME ".\n" | |
0e657244 | 346 | #if USE_WIN32_SERVICE |
0e657244 | 347 | " -r Removes a Windows Service (see -n option).\n" |
348 | #endif | |
5e6d4736 | 349 | " -s | -l facility\n" |
350 | " Enable logging to syslog.\n" | |
62e76326 | 351 | " -u port Specify ICP port number (default: %d), disable with 0.\n" |
04632397 | 352 | " -z Create missing swap directories and then exit.\n" |
62e76326 | 353 | " -C Do not catch fatal signals.\n" |
8eb28163 | 354 | " -D OBSOLETE. Scheduled for removal.\n" |
62e76326 | 355 | " -F Don't serve any requests until store is rebuilt.\n" |
d73c6e83 | 356 | " -N Master process runs in foreground and is a worker. No kids.\n" |
effda67e | 357 | " --foreground\n" |
d73c6e83 | 358 | " Master process runs in foreground and creates worker kids.\n" |
28bca1f7 EB |
359 | " --kid role-ID\n" |
360 | " Play a given SMP kid process role, with a given ID. Do not use\n" | |
361 | " this option. It is meant for the master process use only.\n" | |
0e657244 | 362 | #if USE_WIN32_SERVICE |
363 | " -O options\n" | |
364 | " Set Windows Service Command line options in Registry.\n" | |
365 | #endif | |
62e76326 | 366 | " -R Do not set REUSEADDR on port.\n" |
367 | " -S Double-check swap during rebuild.\n" | |
62e76326 | 368 | " -X Force full debugging.\n" |
61be1d8e | 369 | " Add -d9 to also write full debugging to stderr.\n" |
62e76326 | 370 | " -Y Only return UDP_HIT or UDP_MISS_NOFETCH during fast reload.\n", |
23cf13da | 371 | APP_SHORTNAME, CACHE_HTTP_PORT, DEFAULT_CONFIG_FILE, CACHE_ICP_PORT); |
24885773 | 372 | exit(EXIT_FAILURE); |
ccff9601 | 373 | } |
374 | ||
28bca1f7 EB |
375 | /// CommandLine option IDs for --long options that lack a short (-x) equivalent |
376 | enum { | |
377 | // The absolute values do not matter except that the following values should | |
378 | // not be used: Values below 2 are for special getopt_long(3) use cases, and | |
379 | // values in the [33,126] range are reserved for short options (-x). | |
380 | optForeground = 2, | |
381 | optKid | |
382 | }; | |
090089c4 | 383 | |
28bca1f7 EB |
384 | // short options |
385 | // TODO: consider prefixing with ':' for better logging | |
386 | // (distinguish missing required argument cases) | |
387 | static const char *shortOpStr = | |
0e657244 | 388 | #if USE_WIN32_SERVICE |
28bca1f7 | 389 | "O:Vir" |
0e657244 | 390 | #endif |
28bca1f7 | 391 | "CDFNRSYXa:d:f:hk:m::n:sl:u:vz?"; |
62e76326 | 392 | |
28bca1f7 EB |
393 | // long options |
394 | static struct option squidOptions[] = { | |
aee3523a AR |
395 | {"foreground", no_argument, nullptr, optForeground}, |
396 | {"kid", required_argument, nullptr, optKid}, | |
397 | {"help", no_argument, nullptr, 'h'}, | |
398 | {"version", no_argument, nullptr, 'v'}, | |
399 | {nullptr, 0, nullptr, 0} | |
28bca1f7 | 400 | }; |
62e76326 | 401 | |
28bca1f7 EB |
402 | // handle a command line parameter |
403 | static void | |
404 | mainHandleCommandLineOption(const int optId, const char *optValue) | |
405 | { | |
406 | switch (optId) { | |
407 | ||
408 | case 'C': | |
409 | /** \par C | |
410 | * Unset/disabel global option for catchign signals. opt_catch_signals */ | |
411 | opt_catch_signals = 0; | |
412 | break; | |
413 | ||
414 | case 'D': | |
415 | /** \par D | |
416 | * OBSOLETE: WAS: override to prevent optional startup DNS tests. */ | |
417 | debugs(1,DBG_CRITICAL, "WARNING: -D command-line option is obsolete."); | |
418 | break; | |
419 | ||
420 | case 'F': | |
421 | /** \par F | |
422 | * Set global option for foreground rebuild. opt_foreground_rebuild */ | |
423 | opt_foreground_rebuild = 1; | |
424 | break; | |
425 | ||
426 | case 'N': | |
427 | /** \par N | |
428 | * Set global option for 'no_daemon' mode. opt_no_daemon */ | |
429 | opt_no_daemon = 1; | |
430 | break; | |
62e76326 | 431 | |
28bca1f7 | 432 | #if USE_WIN32_SERVICE |
62e76326 | 433 | |
28bca1f7 EB |
434 | case 'O': |
435 | /** \par O | |
436 | * Set global option. opt_command_lin and WIN32_Command_Line */ | |
437 | opt_command_line = 1; | |
438 | WIN32_Command_Line = xstrdup(optValue); | |
439 | break; | |
440 | #endif | |
441 | ||
442 | case 'R': | |
443 | /** \par R | |
444 | * Unset/disable global option opt_reuseaddr */ | |
445 | opt_reuseaddr = 0; | |
446 | break; | |
447 | ||
448 | case 'S': | |
449 | /** \par S | |
450 | * Set global option opt_store_doublecheck */ | |
451 | opt_store_doublecheck = 1; | |
452 | break; | |
453 | ||
454 | case 'X': | |
455 | /** \par X | |
456 | * Force full debugging */ | |
457 | Debug::parseOptions("rotate=0 ALL,9"); | |
458 | Debug::override_X = 1; | |
459 | sigusr2_handle(SIGUSR2); | |
460 | break; | |
461 | ||
462 | case 'Y': | |
463 | /** \par Y | |
464 | * Set global option opt_reload_hit_only */ | |
465 | opt_reload_hit_only = 1; | |
466 | break; | |
63be0a78 | 467 | |
0e657244 | 468 | #if USE_WIN32_SERVICE |
469 | ||
28bca1f7 EB |
470 | case 'i': |
471 | /** \par i | |
472 | * Set global option opt_install_service (to TRUE) */ | |
473 | opt_install_service = TRUE; | |
474 | break; | |
475 | #endif | |
62e76326 | 476 | |
28bca1f7 EB |
477 | case 'a': |
478 | { | |
479 | /** \par a | |
480 | * Add optional HTTP port as given following the option */ | |
481 | char *port = xstrdup(optValue); | |
482 | // use a copy to avoid optValue modification | |
483 | add_http_port(port); | |
484 | xfree(port); | |
485 | break; | |
486 | } | |
0e657244 | 487 | |
28bca1f7 EB |
488 | case 'd': |
489 | /** \par d | |
61be1d8e AR |
490 | * debugs() messages with the given debugging level (and the more |
491 | * important ones) should be written to stderr */ | |
492 | Debug::ResetStderrLevel(xatoi(optValue)); | |
28bca1f7 EB |
493 | break; |
494 | ||
495 | case 'f': | |
496 | /** \par f | |
497 | * Load the file given instead of the default squid.conf. */ | |
498 | xfree(ConfigFile); | |
499 | ConfigFile = xstrdup(optValue); | |
500 | break; | |
501 | ||
502 | case 'k': | |
503 | /** \par k | |
504 | * Run the administrative action given following the option */ | |
505 | ||
506 | /** \li When it is missing or an unknown option display the usage help. */ | |
507 | if (!optValue || strlen(optValue) < 1) | |
508 | usage(); | |
509 | ||
510 | else if (!strncmp(optValue, "reconfigure", strlen(optValue))) | |
511 | /** \li On reconfigure send SIGHUP. */ | |
512 | opt_send_signal = SIGHUP; | |
513 | else if (!strncmp(optValue, "rotate", strlen(optValue))) | |
514 | /** \li On rotate send SIGQUIT or SIGUSR1. */ | |
605f2c3e | 515 | #if defined(_SQUID_LINUX_THREADS_) |
28bca1f7 | 516 | opt_send_signal = SIGQUIT; |
e3175d1f | 517 | #else |
28bca1f7 | 518 | opt_send_signal = SIGUSR1; |
e3175d1f | 519 | #endif |
62e76326 | 520 | |
28bca1f7 EB |
521 | else if (!strncmp(optValue, "debug", strlen(optValue))) |
522 | /** \li On debug send SIGTRAP or SIGUSR2. */ | |
605f2c3e | 523 | #if defined(_SQUID_LINUX_THREADS_) |
28bca1f7 | 524 | opt_send_signal = SIGTRAP; |
e3175d1f | 525 | #else |
28bca1f7 | 526 | opt_send_signal = SIGUSR2; |
62e76326 | 527 | #endif |
528 | ||
28bca1f7 EB |
529 | else if (!strncmp(optValue, "shutdown", strlen(optValue))) |
530 | /** \li On shutdown send SIGTERM. */ | |
531 | opt_send_signal = SIGTERM; | |
532 | else if (!strncmp(optValue, "interrupt", strlen(optValue))) | |
533 | /** \li On interrupt send SIGINT. */ | |
534 | opt_send_signal = SIGINT; | |
535 | else if (!strncmp(optValue, "kill", strlen(optValue))) | |
1a78f6e8 | 536 | // XXX: In SMP mode, uncatchable SIGKILL only kills the master process |
28bca1f7 EB |
537 | /** \li On kill send SIGKILL. */ |
538 | opt_send_signal = SIGKILL; | |
ae1feb30 | 539 | |
540 | #ifdef SIGTTIN | |
541 | ||
28bca1f7 EB |
542 | else if (!strncmp(optValue, "restart", strlen(optValue))) |
543 | /** \li On restart send SIGTTIN. (exit and restart by parent) */ | |
544 | opt_send_signal = SIGTTIN; | |
ae1feb30 | 545 | |
546 | #endif | |
547 | ||
28bca1f7 EB |
548 | else if (!strncmp(optValue, "check", strlen(optValue))) |
549 | /** \li On check send 0 / SIGNULL. */ | |
550 | opt_send_signal = 0; /* SIGNULL */ | |
551 | else if (!strncmp(optValue, "parse", strlen(optValue))) | |
552 | /** \li On parse set global flag to re-parse the config file only. */ | |
553 | opt_parse_cfg_only = 1; | |
554 | else | |
555 | usage(); | |
62e76326 | 556 | |
61be1d8e AR |
557 | // Cannot use cache.log: use stderr for important messages (by default) |
558 | // and stop expecting a Debug::UseCacheLog() call. | |
559 | Debug::EnsureDefaultStderrLevel(DBG_IMPORTANT); | |
560 | Debug::BanCacheLogUse(); | |
28bca1f7 | 561 | break; |
62e76326 | 562 | |
28bca1f7 EB |
563 | case 'm': |
564 | /** \par m | |
565 | * Set global malloc_debug_level to the value given following the option. | |
566 | * if none is given it toggles the xmalloc_trace option on/off */ | |
567 | if (optValue) { | |
30a4f2a8 | 568 | #if MALLOC_DBG |
28bca1f7 | 569 | malloc_debug_level = xatoi(optValue); |
30a4f2a8 | 570 | #else |
28bca1f7 | 571 | fatal("Need to add -DMALLOC_DBG when compiling to use -mX option"); |
33ab18e8 | 572 | #endif |
62e76326 | 573 | |
28bca1f7 EB |
574 | } |
575 | break; | |
576 | ||
577 | case 'n': | |
578 | /** \par n | |
579 | * Set global option opt_signal_service (to true). | |
580 | * Stores the additional parameter given in global service_name */ | |
581 | if (optValue && *optValue != '\0') { | |
582 | const SBuf t(optValue); | |
583 | ::Parser::Tokenizer tok(t); | |
584 | const CharacterSet chr = CharacterSet::ALPHA+CharacterSet::DIGIT; | |
585 | if (!tok.prefix(service_name, chr)) | |
586 | fatalf("Expected alphanumeric service name for the -n option but got: %s", optValue); | |
587 | if (!tok.atEnd()) | |
588 | fatalf("Garbage after alphanumeric service name in the -n option value: %s", optValue); | |
589 | if (service_name.length() > 32) | |
590 | fatalf("Service name (-n option) must be limited to 32 characters but got %u", service_name.length()); | |
591 | opt_signal_service = true; | |
592 | } else { | |
593 | fatal("A service name is required for the -n option"); | |
594 | } | |
595 | break; | |
0e657244 | 596 | |
cf2155f2 AJ |
597 | #if USE_WIN32_SERVICE |
598 | ||
28bca1f7 EB |
599 | case 'r': |
600 | /** \par r | |
601 | * Set global option opt_remove_service (to TRUE) */ | |
602 | opt_remove_service = TRUE; | |
0e657244 | 603 | |
28bca1f7 | 604 | break; |
0e657244 | 605 | |
606 | #endif | |
607 | ||
28bca1f7 EB |
608 | case 'l': |
609 | /** \par l | |
610 | * Stores the syslog facility name in global opt_syslog_facility | |
611 | * then performs actions for -s option. */ | |
612 | xfree(opt_syslog_facility); // ignore any previous options sent | |
613 | opt_syslog_facility = xstrdup(optValue); | |
61be1d8e | 614 | Debug::ConfigureSyslog(opt_syslog_facility); |
8b082ed9 | 615 | break; |
5e6d4736 | 616 | |
28bca1f7 EB |
617 | case 's': |
618 | /** \par s | |
619 | * Initialize the syslog for output */ | |
61be1d8e | 620 | Debug::ConfigureSyslog(opt_syslog_facility); |
28bca1f7 | 621 | break; |
0e657244 | 622 | |
28bca1f7 EB |
623 | case 'u': |
624 | /** \par u | |
625 | * Store the ICP port number given in global option icpPortNumOverride | |
626 | * ensuring its a positive number. */ | |
627 | icpPortNumOverride = atoi(optValue); | |
62e76326 | 628 | |
28bca1f7 EB |
629 | if (icpPortNumOverride < 0) |
630 | icpPortNumOverride = 0; | |
62e76326 | 631 | |
28bca1f7 | 632 | break; |
62e76326 | 633 | |
28bca1f7 EB |
634 | case 'v': |
635 | /** \par v | |
636 | * Display squid version and build information. Then exit. */ | |
637 | printf("Squid Cache: Version %s\n",version_string); | |
638 | printf("Service Name: " SQUIDSBUFPH "\n", SQUIDSBUFPRINT(service_name)); | |
639 | if (strlen(SQUID_BUILD_INFO)) | |
640 | printf("%s\n",SQUID_BUILD_INFO); | |
dcaa51f4 | 641 | #if USE_OPENSSL |
24b30fdc | 642 | printf("\nThis binary uses %s. ", OpenSSL_version(OPENSSL_VERSION)); |
742236c7 | 643 | #if OPENSSL_VERSION_MAJOR < 3 |
28bca1f7 | 644 | printf("For legal restrictions on distribution see https://www.openssl.org/source/license.html\n\n"); |
742236c7 | 645 | #endif |
dcaa51f4 | 646 | #endif |
28bca1f7 | 647 | printf( "configure options: %s\n", SQUID_CONFIGURE_OPTIONS); |
62e76326 | 648 | |
1a774556 | 649 | #if USE_WIN32_SERVICE |
650 | ||
28bca1f7 | 651 | printf("Compiled as Windows System Service.\n"); |
1a774556 | 652 | |
653 | #endif | |
654 | ||
28bca1f7 | 655 | exit(EXIT_SUCCESS); |
62e76326 | 656 | |
28bca1f7 | 657 | /* NOTREACHED */ |
62e76326 | 658 | |
28bca1f7 EB |
659 | case 'z': |
660 | /** \par z | |
61be1d8e | 661 | * Request cache_dir initialization */ |
28bca1f7 | 662 | opt_create_swap_dirs = 1; |
61be1d8e AR |
663 | // We will use cache.log, but this command is often executed on the |
664 | // command line, so use stderr to show important messages (by default). | |
665 | // TODO: Generalize/fix this -z-specific and sometimes faulty logic with | |
666 | // "use stderr when it is a tty [until we GoIntoBackground()]" logic. | |
667 | Debug::EnsureDefaultStderrLevel(DBG_IMPORTANT); | |
28bca1f7 | 668 | break; |
62e76326 | 669 | |
28bca1f7 EB |
670 | case optForeground: |
671 | /** \par --foreground | |
672 | * Set global option opt_foreground */ | |
673 | opt_foreground = 1; | |
674 | break; | |
effda67e | 675 | |
28bca1f7 EB |
676 | case optKid: |
677 | // already processed in ConfigureCurrentKid() | |
678 | break; | |
63be0a78 | 679 | |
28bca1f7 | 680 | case 'h': |
62e76326 | 681 | |
28bca1f7 | 682 | case '?': |
62e76326 | 683 | |
28bca1f7 EB |
684 | default: |
685 | /** \par h,?, or unknown | |
686 | * \copydoc usage() */ | |
687 | usage(); | |
9b7292ce | 688 | |
28bca1f7 | 689 | break; |
090089c4 | 690 | } |
4d64d74a | 691 | } |
090089c4 | 692 | |
7a2f978b | 693 | /* ARGSUSED */ |
b293c4d8 | 694 | void |
9b7292ce | 695 | rotate_logs(int sig) |
696 | { | |
5cd39a10 | 697 | do_rotate = 1; |
a2c48c98 | 698 | RotateSignal = sig; |
7aa9bb3e | 699 | #if !_SQUID_WINDOWS_ |
30a4f2a8 | 700 | #if !HAVE_SIGACTION |
62e76326 | 701 | |
30a4f2a8 | 702 | signal(sig, rotate_logs); |
703 | #endif | |
a50bfe93 | 704 | #endif |
30a4f2a8 | 705 | } |
706 | ||
7a2f978b | 707 | /* ARGSUSED */ |
b293c4d8 | 708 | void |
9b7292ce | 709 | reconfigure(int sig) |
710 | { | |
5cd39a10 | 711 | do_reconfigure = 1; |
a2c48c98 | 712 | ReconfigureSignal = sig; |
7aa9bb3e | 713 | #if !_SQUID_WINDOWS_ |
30a4f2a8 | 714 | #if !HAVE_SIGACTION |
62e76326 | 715 | |
30a4f2a8 | 716 | signal(sig, reconfigure); |
717 | #endif | |
a50bfe93 | 718 | #endif |
30a4f2a8 | 719 | } |
720 | ||
8b082ed9 | 721 | static void |
00e2479d AR |
722 | master_revive_kids(int sig) |
723 | { | |
724 | ReviveKidsSignal = sig; | |
725 | do_revive_kids = true; | |
726 | ||
727 | #if !_SQUID_WINDOWS_ | |
728 | #if !HAVE_SIGACTION | |
729 | signal(sig, master_revive_kids); | |
730 | #endif | |
731 | #endif | |
732 | } | |
733 | ||
dbf55289 | 734 | /// Shutdown signal handler for master process |
8b082ed9 | 735 | static void |
dbf55289 CT |
736 | master_shutdown(int sig) |
737 | { | |
738 | do_shutdown = 1; | |
739 | ShutdownSignal = sig; | |
740 | ||
741 | #if !_SQUID_WINDOWS_ | |
742 | #if !HAVE_SIGACTION | |
743 | signal(sig, master_shutdown); | |
744 | #endif | |
745 | #endif | |
746 | ||
747 | } | |
748 | ||
b8d8561b | 749 | void |
9b7292ce | 750 | shut_down(int sig) |
751 | { | |
2681d383 | 752 | do_shutdown = sig == SIGINT ? -1 : 1; |
a2c48c98 | 753 | ShutdownSignal = sig; |
d75df34a | 754 | #if defined(SIGTTIN) |
ae1feb30 | 755 | if (SIGTTIN == sig) |
24885773 | 756 | shutdown_status = EXIT_FAILURE; |
ae1feb30 | 757 | #endif |
ca4b9ee6 | 758 | |
8b082ed9 | 759 | #if !defined(_SQUID_WINDOWS_) && !defined(HAVE_SIGACTION) |
dbf55289 CT |
760 | signal(sig, shut_down); |
761 | #endif | |
dbf55289 | 762 | } |
62e76326 | 763 | |
dbf55289 CT |
764 | void |
765 | sig_child(int sig) | |
766 | { | |
767 | do_handle_stopped_child = 1; | |
62e76326 | 768 | |
8b082ed9 | 769 | #if !defined(_SQUID_WINDOWS_) && !defined(HAVE_SIGACTION) |
dbf55289 | 770 | signal(sig, sig_child); |
8b082ed9 FC |
771 | #else |
772 | (void)sig; | |
6e40f263 | 773 | #endif |
30a4f2a8 | 774 | } |
775 | ||
24382924 | 776 | static void |
9b7292ce | 777 | serverConnectionsOpen(void) |
778 | { | |
095ec2b1 AR |
779 | // start various proxying services if we are responsible for them |
780 | if (IamWorkerProcess()) { | |
5667a628 | 781 | clientOpenListenSockets(); |
65d448bc | 782 | icpOpenPorts(); |
ace287ee | 783 | #if USE_HTCP |
65d448bc | 784 | htcpOpenPorts(); |
ace287ee | 785 | #endif |
a67d2b2e | 786 | #if SQUID_SNMP |
65d448bc | 787 | snmpOpenPorts(); |
320e9f36 | 788 | #endif |
0b0cfcf2 | 789 | |
5667a628 AR |
790 | icmpEngine.Open(); |
791 | netdbInit(); | |
922513e5 | 792 | Acl::Node::Initialize(); |
5667a628 | 793 | peerSelectInit(); |
7de94c8c | 794 | } |
5f3f8d0e | 795 | } |
796 | ||
d71e4674 | 797 | static void |
9b7292ce | 798 | serverConnectionsClose(void) |
799 | { | |
0a5a8601 | 800 | assert(shutting_down || reconfiguring); |
7de94c8c | 801 | |
095ec2b1 | 802 | if (IamWorkerProcess()) { |
434a79b0 | 803 | clientConnectionsClose(); |
5667a628 | 804 | icpConnectionShutdown(); |
72549e05 | 805 | #if USE_HTCP |
5667a628 | 806 | htcpSocketShutdown(); |
72549e05 | 807 | #endif |
62e76326 | 808 | |
5667a628 | 809 | icmpEngine.Close(); |
a67d2b2e | 810 | #if SQUID_SNMP |
65d448bc | 811 | snmpClosePorts(); |
320e9f36 | 812 | #endif |
7de94c8c | 813 | } |
5f3f8d0e | 814 | } |
815 | ||
b8d8561b | 816 | static void |
d71e4674 | 817 | mainReconfigureStart(void) |
9b7292ce | 818 | { |
39d48b4f AR |
819 | if (AvoidSignalAction("reconfiguration", do_reconfigure)) |
820 | return; | |
821 | ||
e0236918 | 822 | debugs(1, DBG_IMPORTANT, "Reconfiguring Squid Cache (version " << version_string << ")..."); |
5cd39a10 | 823 | reconfiguring = 1; |
d71e4674 | 824 | |
ee58de20 AJ |
825 | RunRegisteredHere(RegisteredRunner::startReconfigure); |
826 | ||
d71e4674 | 827 | // Initiate asynchronous closing sequence |
15df8349 | 828 | serverConnectionsClose(); |
65d448bc | 829 | icpClosePorts(); |
72549e05 | 830 | #if USE_HTCP |
65d448bc | 831 | htcpClosePorts(); |
72549e05 | 832 | #endif |
cb4f4424 | 833 | #if USE_OPENSSL |
9e779e40 | 834 | Ssl::TheGlobalContextStorage().reconfigureStart(); |
95d2589c | 835 | #endif |
2f1431ea | 836 | #if USE_AUTH |
0bcb6908 | 837 | authenticateReset(); |
2f1431ea | 838 | #endif |
d9572179 | 839 | externalAclShutdown(); |
2db68ce5 | 840 | storeDirCloseSwapLogs(); |
2e923080 | 841 | storeLogClose(); |
842 | accessLogClose(); | |
3ff65596 AR |
843 | #if ICAP_CLIENT |
844 | icapLogClose(); | |
845 | #endif | |
e227da8d | 846 | Security::CloseLogs(); |
d71e4674 | 847 | |
aee3523a | 848 | eventAdd("mainReconfigureFinish", &mainReconfigureFinish, nullptr, 0, 1, |
26ac0430 | 849 | false); |
d71e4674 AR |
850 | } |
851 | ||
3e310519 AR |
852 | /// error message to log when Configuration::Parse() fails |
853 | static SBuf | |
854 | ConfigurationFailureMessage() | |
855 | { | |
856 | SBufStream out; | |
857 | out << (reconfiguring ? "re" : ""); | |
858 | out << "configuration failure: " << CurrentException; | |
859 | if (!opt_parse_cfg_only) | |
860 | out << Debug::Extra << "advice: Run 'squid -k parse' and check for ERRORs."; | |
861 | return out.buf(); | |
862 | } | |
863 | ||
d71e4674 | 864 | static void |
26ac0430 AJ |
865 | mainReconfigureFinish(void *) |
866 | { | |
d71e4674 AR |
867 | debugs(1, 3, "finishing reconfiguring"); |
868 | ||
c68e9c6b | 869 | errorClean(); |
f53969cc | 870 | enter_suid(); /* root to read config file */ |
936b23cd AJ |
871 | |
872 | // we may have disabled the need for PURGE | |
e1381638 | 873 | if (Config2.onoff.enable_purge) |
936b23cd AJ |
874 | Config2.onoff.enable_purge = 2; |
875 | ||
13aeac35 | 876 | const int oldWorkers = Config.workers; |
3e310519 | 877 | |
8951901e | 878 | try { |
3e310519 | 879 | Configuration::Parse(); |
8951901e | 880 | } catch (...) { |
18631119 | 881 | // for now any errors are a fatal condition... |
3e310519 | 882 | fatal(ConfigurationFailureMessage().c_str()); |
18631119 | 883 | } |
8951901e | 884 | |
13aeac35 AR |
885 | if (oldWorkers != Config.workers) { |
886 | debugs(1, DBG_CRITICAL, "WARNING: Changing 'workers' (from " << | |
5667a628 | 887 | oldWorkers << " to " << Config.workers << |
0b68976e | 888 | ") requires a full restart. It has been ignored by reconfigure."); |
13aeac35 | 889 | Config.workers = oldWorkers; |
a2c48c98 | 890 | } |
936b23cd | 891 | |
21b7990f AR |
892 | RunRegisteredHere(RegisteredRunner::syncConfig); |
893 | ||
96c2bb61 AR |
894 | if (IamPrimaryProcess()) |
895 | CpuAffinityCheck(); | |
896 | CpuAffinityReconfigure(); | |
897 | ||
c642c141 | 898 | setUmask(Config.umask); |
3aa4adbc | 899 | setEffectiveUser(); |
61be1d8e | 900 | Debug::UseCacheLog(); |
f53969cc SM |
901 | ipcache_restart(); /* clear stuck entries */ |
902 | fqdncache_restart(); /* sigh, fqdncache too */ | |
0e70aa1e | 903 | parseEtcHosts(); |
f53969cc | 904 | errorInitialize(); /* reload error pages */ |
2e923080 | 905 | accessLogInit(); |
76fc7e57 AJ |
906 | |
907 | #if USE_LOADABLE_MODULES | |
908 | LoadableModulesConfigure(Config.loadable_module_names); | |
909 | #endif | |
910 | ||
911 | #if USE_ADAPTATION | |
912 | bool enableAdaptation = false; | |
913 | #if ICAP_CLIENT | |
914 | Adaptation::Icap::TheConfig.finalize(); | |
915 | enableAdaptation = Adaptation::Icap::TheConfig.onoff || enableAdaptation; | |
916 | #endif | |
917 | #if USE_ECAP | |
918 | Adaptation::Ecap::TheConfig.finalize(); // must be after we load modules | |
919 | enableAdaptation = Adaptation::Ecap::TheConfig.onoff || enableAdaptation; | |
920 | #endif | |
921 | Adaptation::Config::Finalize(enableAdaptation); | |
922 | #endif | |
d090e020 | 923 | |
e227da8d | 924 | Security::OpenLogs(); |
3ff65596 AR |
925 | #if ICAP_CLIENT |
926 | icapLogOpen(); | |
927 | #endif | |
2e923080 | 928 | storeLogOpen(); |
4a3b98d7 | 929 | Dns::Init(); |
95d2589c | 930 | #if USE_SSL_CRTD |
23da195f | 931 | Ssl::Helper::Reconfigure(); |
95d2589c | 932 | #endif |
cb4f4424 | 933 | #if USE_OPENSSL |
23da195f | 934 | Ssl::CertValidationHelper::Reconfigure(); |
2cef0ca6 | 935 | #endif |
62e76326 | 936 | |
23da195f | 937 | redirectReconfigure(); |
2f1431ea | 938 | #if USE_AUTH |
5c112575 | 939 | authenticateInit(&Auth::TheConfig.schemes); |
2f1431ea | 940 | #endif |
d9572179 | 941 | externalAclInit(); |
7de94c8c | 942 | |
0ffd22bc | 943 | serverConnectionsOpen(); |
9c2e9b50 | 944 | |
3ee2b4f8 | 945 | neighbors_init(); |
9c2e9b50 | 946 | |
2db68ce5 | 947 | storeDirOpenSwapLogs(); |
9c2e9b50 | 948 | |
9c021a38 | 949 | mimeInit(Config.mimeTablePathname); |
9c2e9b50 | 950 | |
c521ad17 DK |
951 | if (unlinkdNeeded()) |
952 | unlinkdInit(); | |
c521ad17 | 953 | |
9a0a18de | 954 | #if USE_DELAY_POOLS |
b4cd430a CT |
955 | Config.ClientDelay.finalize(); |
956 | #endif | |
957 | ||
5cd39a10 | 958 | reconfiguring = 0; |
959 | } | |
960 | ||
961 | static void | |
9b7292ce | 962 | mainRotate(void) |
963 | { | |
39d48b4f AR |
964 | if (AvoidSignalAction("log rotation", do_rotate)) |
965 | return; | |
966 | ||
cc192b50 | 967 | icmpEngine.Close(); |
e40aa8da | 968 | redirectShutdown(); |
2f1431ea | 969 | #if USE_AUTH |
0bcb6908 | 970 | authenticateRotate(); |
2f1431ea | 971 | #endif |
d9572179 | 972 | externalAclShutdown(); |
0a6dd8fb | 973 | |
f53969cc | 974 | _db_rotate_log(); /* cache.log */ |
5cd39a10 | 975 | storeDirWriteCleanLogs(1); |
f53969cc SM |
976 | storeLogRotate(); /* store.log */ |
977 | accessLogRotate(); /* access.log */ | |
e227da8d | 978 | Security::RotateLogs(); |
3ff65596 AR |
979 | #if ICAP_CLIENT |
980 | icapLogRotate(); /*icap.log*/ | |
981 | #endif | |
cc192b50 | 982 | icmpEngine.Open(); |
e40aa8da | 983 | redirectInit(); |
2f1431ea | 984 | #if USE_AUTH |
5c112575 | 985 | authenticateInit(&Auth::TheConfig.schemes); |
2f1431ea | 986 | #endif |
d9572179 | 987 | externalAclInit(); |
5f3f8d0e | 988 | } |
989 | ||
067bea91 | 990 | static void |
9b7292ce | 991 | setEffectiveUser(void) |
992 | { | |
fc68f6b1 | 993 | keepCapabilities(); |
f53969cc | 994 | leave_suid(); /* Run as non privilegied user */ |
1191b93b | 995 | #if _SQUID_OS2_ |
62e76326 | 996 | |
cd377065 | 997 | return; |
998 | #endif | |
62e76326 | 999 | |
85407535 | 1000 | if (geteuid() == 0) { |
fa84c01d FC |
1001 | debugs(0, DBG_CRITICAL, "Squid is not safe to run as root! If you must"); |
1002 | debugs(0, DBG_CRITICAL, "start Squid as root, then you must configure"); | |
1003 | debugs(0, DBG_CRITICAL, "it to run as a non-priveledged user with the"); | |
1004 | debugs(0, DBG_CRITICAL, "'cache_effective_user' option in the config file."); | |
62e76326 | 1005 | fatal("Don't run Squid as root, set 'cache_effective_user'!"); |
85407535 | 1006 | } |
1007 | } | |
1008 | ||
dd0cbc64 AR |
1009 | /// changes working directory, providing error reporting |
1010 | static bool | |
1011 | mainChangeDir(const char *dir) | |
1012 | { | |
1013 | if (chdir(dir) == 0) | |
1014 | return true; | |
1015 | ||
b69e9ffa AJ |
1016 | int xerrno = errno; |
1017 | debugs(50, DBG_CRITICAL, "ERROR: cannot change current directory to " << dir << | |
1018 | ": " << xstrerr(xerrno)); | |
dd0cbc64 AR |
1019 | return false; |
1020 | } | |
1021 | ||
e99fa721 EB |
1022 | /// Hack: Have we called chroot()? This exposure is needed because some code has |
1023 | /// to open the same files before and after chroot() | |
1024 | bool Chrooted = false; | |
1025 | ||
133906f5 | 1026 | /// set the working directory. |
b6a2f15e | 1027 | static void |
9b7292ce | 1028 | mainSetCwd(void) |
1029 | { | |
e99fa721 EB |
1030 | if (Config.chroot_dir && !Chrooted) { |
1031 | Chrooted = true; | |
62e76326 | 1032 | |
b69e9ffa AJ |
1033 | if (chroot(Config.chroot_dir) != 0) { |
1034 | int xerrno = errno; | |
1035 | fatalf("chroot to %s failed: %s", Config.chroot_dir, xstrerr(xerrno)); | |
1036 | } | |
133906f5 | 1037 | |
dd0cbc64 AR |
1038 | if (!mainChangeDir("/")) |
1039 | fatalf("chdir to / after chroot to %s failed", Config.chroot_dir); | |
133906f5 AJ |
1040 | } |
1041 | ||
dd0cbc64 AR |
1042 | if (Config.coredump_dir && strcmp("none", Config.coredump_dir) != 0) { |
1043 | if (mainChangeDir(Config.coredump_dir)) { | |
c59baaa8 | 1044 | debugs(0, Important(4), "Set Current Directory to " << Config.coredump_dir); |
62e76326 | 1045 | return; |
62e76326 | 1046 | } |
b6a2f15e | 1047 | } |
62e76326 | 1048 | |
02e8115e | 1049 | /* If we don't have coredump_dir or couldn't cd there, report current dir */ |
dd0cbc64 | 1050 | char pathbuf[MAXPATHLEN]; |
4a504376 | 1051 | if (getcwd(pathbuf, MAXPATHLEN)) { |
e0236918 | 1052 | debugs(0, DBG_IMPORTANT, "Current Directory is " << pathbuf); |
4a504376 | 1053 | } else { |
b69e9ffa AJ |
1054 | int xerrno = errno; |
1055 | debugs(50, DBG_CRITICAL, "WARNING: Can't find current directory, getcwd: " << xstrerr(xerrno)); | |
4a504376 | 1056 | } |
b6a2f15e | 1057 | } |
1058 | ||
b8d8561b | 1059 | static void |
9b7292ce | 1060 | mainInitialize(void) |
1061 | { | |
1758c627 | 1062 | if (opt_catch_signals) { |
62e76326 | 1063 | squid_signal(SIGSEGV, death, SA_NODEFER | SA_RESETHAND); |
1064 | squid_signal(SIGBUS, death, SA_NODEFER | SA_RESETHAND); | |
44f99671 | 1065 | } |
62e76326 | 1066 | |
30a4f2a8 | 1067 | squid_signal(SIGPIPE, SIG_IGN, SA_RESTART); |
1068 | squid_signal(SIGCHLD, sig_child, SA_NODEFER | SA_RESTART); | |
a918ecc6 | 1069 | squid_signal(SIGHUP, reconfigure, SA_RESTART); |
44f99671 | 1070 | |
85407535 | 1071 | setEffectiveUser(); |
62e76326 | 1072 | |
30a4f2a8 | 1073 | if (icpPortNumOverride != 1) |
f45dd259 | 1074 | Config.Port.icp = (unsigned short) icpPortNumOverride; |
30a4f2a8 | 1075 | |
fa84c01d | 1076 | debugs(1, DBG_CRITICAL, "Starting Squid Cache version " << version_string << " for " << CONFIG_HOST_TYPE << "..."); |
c59baaa8 | 1077 | debugs(1, Critical(5), "Service Name: " << service_name); |
62e76326 | 1078 | |
be266cb2 | 1079 | #if _SQUID_WINDOWS_ |
b293c4d8 | 1080 | if (WIN32_run_mode == _WIN_SQUID_RUN_MODE_SERVICE) { |
fa84c01d | 1081 | debugs(1, DBG_CRITICAL, "Service command line is: " << WIN32_Service_Command_Line); |
b293c4d8 | 1082 | } else |
fa84c01d | 1083 | debugs(1, DBG_CRITICAL, "Running on " << WIN32_OS_string); |
b293c4d8 | 1084 | #endif |
1085 | ||
c59baaa8 | 1086 | debugs(1, Important(6), "Process ID " << getpid()); |
095ec2b1 | 1087 | |
c59baaa8 | 1088 | debugs(1, Important(7), "Process Roles:" << ProcessRoles()); |
095ec2b1 | 1089 | |
f3f0f563 | 1090 | setSystemLimits(); |
c59baaa8 | 1091 | debugs(1, Important(8), "With " << Squid_MaxFD << " file descriptors available"); |
5f3f8d0e | 1092 | |
7aa9bb3e | 1093 | #if _SQUID_WINDOWS_ |
6c1962dd | 1094 | |
e0236918 | 1095 | debugs(1, DBG_IMPORTANT, "With " << _getmaxstdio() << " CRT stdio descriptors available"); |
6c1962dd | 1096 | |
1097 | if (WIN32_Socks_initialized) | |
e0236918 | 1098 | debugs(1, DBG_IMPORTANT, "Windows sockets initialized"); |
6c1962dd | 1099 | |
babd1fd5 | 1100 | if (WIN32_OS_version > _WIN_OS_WINNT) { |
26ac0430 | 1101 | WIN32_IpAddrChangeMonitorInit(); |
babd1fd5 | 1102 | } |
1103 | ||
6c1962dd | 1104 | #endif |
1105 | ||
5f3f8d0e | 1106 | ipcache_init(); |
62e76326 | 1107 | |
f88bb09c | 1108 | fqdncache_init(); |
62e76326 | 1109 | |
0e70aa1e | 1110 | parseEtcHosts(); |
62e76326 | 1111 | |
4a3b98d7 | 1112 | Dns::Init(); |
62e76326 | 1113 | |
586089cd | 1114 | #if USE_SSL_CRTD |
23da195f | 1115 | Ssl::Helper::Init(); |
586089cd CT |
1116 | #endif |
1117 | ||
cb4f4424 | 1118 | #if USE_OPENSSL |
23da195f | 1119 | Ssl::CertValidationHelper::Init(); |
2cef0ca6 AR |
1120 | #endif |
1121 | ||
74addf6c | 1122 | redirectInit(); |
2f1431ea | 1123 | #if USE_AUTH |
5c112575 | 1124 | authenticateInit(&Auth::TheConfig.schemes); |
2f1431ea | 1125 | #endif |
d9572179 | 1126 | externalAclInit(); |
62e76326 | 1127 | |
f53969cc | 1128 | httpHeaderInitModule(); /* must go before any header processing (e.g. the one in errorInitialize) */ |
62e76326 | 1129 | |
9b312a19 | 1130 | errorInitialize(); |
62e76326 | 1131 | |
7a2f978b | 1132 | accessLogInit(); |
62e76326 | 1133 | |
e227da8d AR |
1134 | Security::OpenLogs(); |
1135 | ||
e1381638 | 1136 | #if ICAP_CLIENT |
3ff65596 AR |
1137 | icapLogOpen(); |
1138 | #endif | |
1139 | ||
59ad6d31 | 1140 | #if SQUID_SNMP |
62e76326 | 1141 | |
5e14bf6d | 1142 | snmpInit(); |
62e76326 | 1143 | |
5e14bf6d | 1144 | #endif |
30a4f2a8 | 1145 | #if MALLOC_DBG |
62e76326 | 1146 | |
5f3f8d0e | 1147 | malloc_debug(0, malloc_debug_level); |
62e76326 | 1148 | |
5f3f8d0e | 1149 | #endif |
1150 | ||
4a950bad EB |
1151 | if (unlinkdNeeded()) |
1152 | unlinkdInit(); | |
1153 | ||
1154 | urlInitialize(); | |
1155 | statInit(); | |
1156 | storeInit(); | |
1157 | mainSetCwd(); | |
1158 | mimeInit(Config.mimeTablePathname); | |
1159 | refreshInit(); | |
9a0a18de | 1160 | #if USE_DELAY_POOLS |
4a950bad | 1161 | DelayPools::Init(); |
0d7e5d78 | 1162 | #endif |
62e76326 | 1163 | |
4a950bad | 1164 | FwdState::initModule(); |
4a950bad | 1165 | SBufStatsAction::RegisterWithCacheManager(); |
d87f6b1d | 1166 | |
8d3bf70e EB |
1167 | AsyncJob::RegisterWithCacheManager(); |
1168 | ||
4a950bad EB |
1169 | /* These use separate calls so that the comm loops can eventually |
1170 | * coexist. | |
1171 | */ | |
62ee09ca | 1172 | |
4a950bad | 1173 | eventInit(); |
610ee341 | 1174 | |
4a950bad EB |
1175 | // TODO: pconn is a good candidate for new-style registration |
1176 | // PconnModule::GetInstance()->registerWithCacheManager(); | |
1177 | // moved to PconnModule::PconnModule() | |
62e76326 | 1178 | |
2285407f | 1179 | serverConnectionsOpen(); |
62e76326 | 1180 | |
3ee2b4f8 | 1181 | neighbors_init(); |
fc68f6b1 | 1182 | |
5f5e883f | 1183 | // neighborsRegisterWithCacheManager(); //moved to neighbors_init() |
62e76326 | 1184 | |
efd900cb | 1185 | if (Config.chroot_dir) |
62e76326 | 1186 | no_suid(); |
1187 | ||
605f2c3e | 1188 | #if defined(_SQUID_LINUX_THREADS_) |
62e76326 | 1189 | |
e3175d1f | 1190 | squid_signal(SIGQUIT, rotate_logs, SA_RESTART); |
62e76326 | 1191 | |
e3175d1f | 1192 | squid_signal(SIGTRAP, sigusr2_handle, SA_RESTART); |
62e76326 | 1193 | |
e3175d1f | 1194 | #else |
62e76326 | 1195 | |
30a4f2a8 | 1196 | squid_signal(SIGUSR1, rotate_logs, SA_RESTART); |
62e76326 | 1197 | |
30a4f2a8 | 1198 | squid_signal(SIGUSR2, sigusr2_handle, SA_RESTART); |
62e76326 | 1199 | |
9fc0b4b8 | 1200 | #endif |
62e76326 | 1201 | |
dbf55289 | 1202 | squid_signal(SIGTERM, shut_down, SA_RESTART); |
62e76326 | 1203 | |
dbf55289 | 1204 | squid_signal(SIGINT, shut_down, SA_RESTART); |
62e76326 | 1205 | |
ae1feb30 | 1206 | #ifdef SIGTTIN |
1207 | ||
dbf55289 | 1208 | squid_signal(SIGTTIN, shut_down, SA_RESTART); |
ae1feb30 | 1209 | |
1210 | #endif | |
1211 | ||
57afc994 AR |
1212 | #if USE_LOADABLE_MODULES |
1213 | LoadableModulesConfigure(Config.loadable_module_names); | |
1214 | #endif | |
1215 | ||
8f361c50 AR |
1216 | #if USE_ADAPTATION |
1217 | bool enableAdaptation = false; | |
1218 | ||
1219 | // We can remove this dependency on specific adaptation mechanisms | |
1220 | // if we create a generic Registry of such mechanisms. Should we? | |
b958cb0f | 1221 | #if ICAP_CLIENT |
26cc52cb AR |
1222 | Adaptation::Icap::TheConfig.finalize(); |
1223 | enableAdaptation = Adaptation::Icap::TheConfig.onoff || enableAdaptation; | |
6e5db507 AR |
1224 | #endif |
1225 | #if USE_ECAP | |
574b508c AR |
1226 | Adaptation::Ecap::TheConfig.finalize(); // must be after we load modules |
1227 | enableAdaptation = Adaptation::Ecap::TheConfig.onoff || enableAdaptation; | |
b958cb0f | 1228 | #endif |
8f361c50 AR |
1229 | // must be the last adaptation-related finalize |
1230 | Adaptation::Config::Finalize(enableAdaptation); | |
b958cb0f AR |
1231 | #endif |
1232 | ||
9a0a18de | 1233 | #if USE_DELAY_POOLS |
b4cd430a CT |
1234 | Config.ClientDelay.finalize(); |
1235 | #endif | |
1236 | ||
4a950bad | 1237 | eventAdd("storeMaintain", Store::Maintain, nullptr, 1.0, 1); |
62e76326 | 1238 | |
4a950bad | 1239 | eventAdd("ipcache_purgelru", ipcache_purgelru, nullptr, 10.0, 1); |
62e76326 | 1240 | |
4a950bad | 1241 | eventAdd("fqdncache_purgelru", fqdncache_purgelru, nullptr, 15.0, 1); |
62e76326 | 1242 | |
4a950bad | 1243 | eventAdd("memPoolCleanIdlePools", Mem::CleanIdlePools, nullptr, 15.0, 1); |
62e76326 | 1244 | |
dbe4fd8e | 1245 | configured_once = 1; |
4d64d74a | 1246 | } |
1247 | ||
ebdb0ef1 AR |
1248 | static void |
1249 | OnTerminate() | |
1250 | { | |
1251 | // ignore recursive calls to avoid termination loops | |
1252 | static bool terminating = false; | |
1253 | if (terminating) | |
1254 | return; | |
1255 | terminating = true; | |
1256 | ||
cf2fca52 | 1257 | debugs(1, DBG_CRITICAL, "FATAL: Dying after an undetermined failure" << CurrentExceptionExtra); |
61be1d8e AR |
1258 | |
1259 | Debug::PrepareToDie(); | |
ebdb0ef1 AR |
1260 | abort(); |
1261 | } | |
1262 | ||
c842329d | 1263 | /// unsafe main routine -- may throw |
f3f3e961 | 1264 | int SquidMain(int argc, char **argv); |
c842329d | 1265 | /// unsafe main routine wrapper to catch exceptions |
6e5db507 AR |
1266 | static int SquidMainSafe(int argc, char **argv); |
1267 | ||
6c1962dd | 1268 | #if USE_WIN32_SERVICE |
a74922b5 | 1269 | /* Entry point for Windows services */ |
6c1962dd | 1270 | extern "C" void WINAPI |
e1381638 | 1271 | SquidWinSvcMain(int argc, char **argv) |
18631119 AJ |
1272 | { |
1273 | SquidMainSafe(argc, argv); | |
1274 | } | |
a74922b5 AJ |
1275 | #endif |
1276 | ||
b8d8561b | 1277 | int |
1278 | main(int argc, char **argv) | |
6e5db507 | 1279 | { |
a74922b5 AJ |
1280 | #if USE_WIN32_SERVICE |
1281 | SetErrorMode(SEM_NOGPFAULTERRORBOX); | |
1282 | if ((argc == 2) && strstr(argv[1], _WIN_SQUID_SERVICE_OPTION)) | |
1283 | return WIN32_StartService(argc, argv); | |
1284 | else { | |
1285 | WIN32_run_mode = _WIN_SQUID_RUN_MODE_INTERACTIVE; | |
1286 | opt_no_daemon = 1; | |
1287 | } | |
1288 | #endif | |
1289 | ||
18631119 | 1290 | return SquidMainSafe(argc, argv); |
6e5db507 AR |
1291 | } |
1292 | ||
1293 | static int | |
1294 | SquidMainSafe(int argc, char **argv) | |
1295 | { | |
ebdb0ef1 AR |
1296 | (void)std::set_terminate(&OnTerminate); |
1297 | // XXX: This top-level catch works great for startup, but, during runtime, | |
1298 | // it erases valuable stack info. TODO: Let stack-preserving OnTerminate() | |
1299 | // handle FATAL runtime errors by splitting main code into protected | |
1300 | // startup, unprotected runtime, and protected termination sections! | |
6e5db507 AR |
1301 | try { |
1302 | return SquidMain(argc, argv); | |
26ac0430 | 1303 | } catch (...) { |
ebdb0ef1 | 1304 | debugs(1, DBG_CRITICAL, "FATAL: " << CurrentException); |
26ac0430 | 1305 | } |
24885773 | 1306 | return EXIT_FAILURE; |
6e5db507 AR |
1307 | } |
1308 | ||
d4a3e179 AR |
1309 | /// computes name and ID for the current kid process |
1310 | static void | |
28bca1f7 | 1311 | ConfigureCurrentKid(const CommandLine &cmdLine) |
d4a3e179 | 1312 | { |
28bca1f7 EB |
1313 | const char *kidParams = nullptr; |
1314 | if (cmdLine.hasOption(optKid, &kidParams)) { | |
1315 | SBuf processName(kidParams); | |
1316 | SBuf kidId; | |
1317 | Parser::Tokenizer tok(processName); | |
1318 | tok.suffix(kidId, CharacterSet::DIGIT); | |
1319 | KidIdentifier = xatoi(kidId.c_str()); | |
1320 | tok.skipSuffix(SBuf("-")); | |
1321 | TheKidName = tok.remaining(); | |
1322 | if (TheKidName.cmp("squid-coord") == 0) | |
1323 | TheProcessKind = pkCoordinator; | |
1324 | else if (TheKidName.cmp("squid") == 0) | |
1325 | TheProcessKind = pkWorker; | |
1326 | else if (TheKidName.cmp("squid-disk") == 0) | |
1327 | TheProcessKind = pkDisker; | |
1328 | else | |
1329 | TheProcessKind = pkOther; // including coordinator | |
2664c457 | 1330 | } else { |
28bca1f7 | 1331 | TheKidName.assign(APP_SHORTNAME); |
2664c457 | 1332 | KidIdentifier = 0; |
d4a3e179 | 1333 | } |
879c39f7 | 1334 | Debug::NameThisKid(KidIdentifier); |
d4a3e179 AR |
1335 | } |
1336 | ||
d7ca82e6 | 1337 | /// Start directing debugs() messages to the configured cache.log. |
d7ca82e6 EB |
1338 | static void |
1339 | ConfigureDebugging() | |
1340 | { | |
1341 | if (opt_no_daemon) { | |
1342 | fd_open(0, FD_LOG, "stdin"); | |
1343 | fd_open(1, FD_LOG, "stdout"); | |
1344 | fd_open(2, FD_LOG, "stderr"); | |
1345 | } | |
1346 | // we should not create cache.log outside chroot environment, if any | |
61be1d8e | 1347 | // XXX: With Config.chroot_dir set, SMP master process calls Debug::BanCacheLogUse(). |
d7ca82e6 | 1348 | if (!Config.chroot_dir || Chrooted) |
61be1d8e AR |
1349 | Debug::UseCacheLog(); |
1350 | else | |
1351 | Debug::BanCacheLogUse(); | |
d7ca82e6 EB |
1352 | } |
1353 | ||
1354 | static void | |
1355 | RunConfigUsers() | |
01ac0a5b EB |
1356 | { |
1357 | RunRegisteredHere(RegisteredRunner::claimMemoryNeeds); | |
1358 | RunRegisteredHere(RegisteredRunner::useConfig); | |
1359 | } | |
1360 | ||
d7ca82e6 EB |
1361 | static void |
1362 | StartUsingConfig() | |
1363 | { | |
1364 | setMaxFD(); | |
1365 | fde::Init(); | |
1366 | const auto skipCwdAdjusting = IamMasterProcess() && InDaemonMode(); | |
1367 | if (skipCwdAdjusting) { | |
1368 | ConfigureDebugging(); | |
1369 | RunConfigUsers(); | |
1370 | } else if (Config.chroot_dir) { | |
1371 | RunConfigUsers(); | |
1372 | enter_suid(); | |
1373 | // TODO: don't we need to RunConfigUsers() in the configured | |
1374 | // chroot environment? | |
1375 | mainSetCwd(); | |
1376 | leave_suid(); | |
1377 | ConfigureDebugging(); | |
1378 | } else { | |
1379 | ConfigureDebugging(); | |
1380 | RunConfigUsers(); | |
1381 | enter_suid(); | |
1382 | // TODO: since RunConfigUsers() may use a relative path, we | |
1383 | // need to change the process root first | |
1384 | mainSetCwd(); | |
1385 | leave_suid(); | |
1386 | } | |
1387 | } | |
1388 | ||
230d4410 AR |
1389 | /// register all known modules for handling future RegisteredRunner events |
1390 | static void | |
1391 | RegisterModules() | |
1392 | { | |
1393 | // These registration calls do not represent a RegisteredRunner "event". The | |
1394 | // modules registered here should be initialized later, during those events. | |
1395 | ||
1396 | // RegisteredRunner event handlers should not depend on handler call order | |
1397 | // and, hence, should not depend on the registration call order below. | |
1398 | ||
8c469f12 | 1399 | CallRunnerRegistrator(CarpRr); |
230d4410 AR |
1400 | CallRunnerRegistrator(ClientDbRr); |
1401 | CallRunnerRegistrator(CollapsedForwardingRr); | |
1402 | CallRunnerRegistrator(MemStoreRr); | |
1403 | CallRunnerRegistrator(PeerPoolMgrsRr); | |
8c469f12 | 1404 | CallRunnerRegistrator(PeerSourceHashRr); |
230d4410 AR |
1405 | CallRunnerRegistrator(SharedMemPagesRr); |
1406 | CallRunnerRegistrator(SharedSessionCacheRr); | |
1407 | CallRunnerRegistrator(TransientsRr); | |
1408 | CallRunnerRegistratorIn(Dns, ConfigRr); | |
1409 | ||
1410 | #if HAVE_DISKIO_MODULE_IPCIO | |
1411 | CallRunnerRegistrator(IpcIoRr); | |
1412 | #endif | |
1413 | ||
1414 | #if HAVE_AUTH_MODULE_NTLM | |
1415 | CallRunnerRegistrator(NtlmAuthRr); | |
1416 | #endif | |
1417 | ||
8c469f12 AR |
1418 | #if USE_AUTH |
1419 | CallRunnerRegistrator(PeerUserHashRr); | |
1420 | #endif | |
1421 | ||
230d4410 AR |
1422 | #if USE_OPENSSL |
1423 | CallRunnerRegistrator(sslBumpCfgRr); | |
1424 | #endif | |
1425 | ||
230d4410 AR |
1426 | #if HAVE_FS_ROCK |
1427 | CallRunnerRegistratorIn(Rock, SwapDirRr); | |
1428 | #endif | |
0b514968 AJ |
1429 | |
1430 | #if USE_WCCP | |
1431 | CallRunnerRegistrator(WccpRr); | |
1432 | #endif | |
1433 | #if USE_WCCPv2 | |
1434 | CallRunnerRegistrator(Wccp2Rr); | |
1435 | #endif | |
230d4410 AR |
1436 | } |
1437 | ||
f3f3e961 | 1438 | int |
6e5db507 | 1439 | SquidMain(int argc, char **argv) |
9b7292ce | 1440 | { |
230d4410 AR |
1441 | // We must register all modules before the first RunRegisteredHere() call. |
1442 | // We do it ASAP/here so that we do not need to move this code when we add | |
1443 | // earlier hooks to the RegisteredRunner API. | |
1444 | RegisterModules(); | |
1445 | ||
28bca1f7 EB |
1446 | const CommandLine cmdLine(argc, argv, shortOpStr, squidOptions); |
1447 | ||
1448 | ConfigureCurrentKid(cmdLine); | |
007d775d | 1449 | |
b9269882 | 1450 | #if defined(SQUID_MAXFD_LIMIT) |
1451 | ||
1452 | if (SQUID_MAXFD_LIMIT < Squid_MaxFD) | |
1453 | Squid_MaxFD = SQUID_MAXFD_LIMIT; | |
1454 | ||
1455 | #endif | |
399e85ea | 1456 | |
cf3edd6f FC |
1457 | /* NOP under non-windows */ |
1458 | int WIN32_init_err=0; | |
a0aa9e74 | 1459 | if ((WIN32_init_err = WIN32_Subsystem_Init(&argc, &argv))) |
1460 | return WIN32_init_err; | |
0e6d05ef | 1461 | |
9b7292ce | 1462 | /* call mallopt() before anything else */ |
0b29fe44 | 1463 | #if HAVE_MALLOPT |
7328e889 | 1464 | #ifdef M_GRAIN |
9b7292ce | 1465 | /* Round up all sizes to a multiple of this */ |
1466 | mallopt(M_GRAIN, 16); | |
62e76326 | 1467 | |
7328e889 | 1468 | #endif |
1469 | #ifdef M_MXFAST | |
9b7292ce | 1470 | /* biggest size that is considered a small block */ |
1471 | mallopt(M_MXFAST, 256); | |
62e76326 | 1472 | |
7328e889 | 1473 | #endif |
1474 | #ifdef M_NBLKS | |
9b7292ce | 1475 | /* allocate this many small blocks at once */ |
1476 | mallopt(M_NLBLKS, 32); | |
62e76326 | 1477 | |
7328e889 | 1478 | #endif |
1479 | #endif /* HAVE_MALLOPT */ | |
1480 | ||
9b7292ce | 1481 | getCurrentTime(); |
62e76326 | 1482 | |
9b7292ce | 1483 | squid_start = current_time; |
62e76326 | 1484 | |
9b7292ce | 1485 | failure_notify = fatal_dump; |
4d64d74a | 1486 | |
6c1962dd | 1487 | #if USE_WIN32_SERVICE |
1488 | ||
9b7292ce | 1489 | WIN32_svcstatusupdate(SERVICE_START_PENDING, 10000); |
6c1962dd | 1490 | |
1491 | #endif | |
827da5e0 | 1492 | AnyP::UriScheme::Init(); // needs to be before arg parsing, bug 5337 |
6c1962dd | 1493 | |
28bca1f7 | 1494 | cmdLine.forEachOption(mainHandleCommandLineOption); |
4d64d74a | 1495 | |
61be1d8e AR |
1496 | Debug::SettleStderr(); |
1497 | Debug::SettleSyslog(); | |
1498 | ||
effda67e MM |
1499 | if (opt_foreground && opt_no_daemon) { |
1500 | debugs(1, DBG_CRITICAL, "WARNING: --foreground command-line option has no effect with -N."); | |
1501 | } | |
1502 | ||
6c1962dd | 1503 | #if USE_WIN32_SERVICE |
1504 | ||
26ac0430 | 1505 | if (opt_install_service) { |
9b7292ce | 1506 | WIN32_InstallService(); |
a0aa9e74 | 1507 | return 0; |
9b7292ce | 1508 | } |
6c1962dd | 1509 | |
26ac0430 | 1510 | if (opt_remove_service) { |
9b7292ce | 1511 | WIN32_RemoveService(); |
a0aa9e74 | 1512 | return 0; |
9b7292ce | 1513 | } |
6c1962dd | 1514 | |
26ac0430 | 1515 | if (opt_command_line) { |
9b7292ce | 1516 | WIN32_SetServiceCommandLine(); |
a0aa9e74 | 1517 | return 0; |
9b7292ce | 1518 | } |
6c1962dd | 1519 | |
1520 | #endif | |
1521 | ||
9b7292ce | 1522 | /* parse configuration file |
1523 | * note: in "normal" case this used to be called from mainInitialize() */ | |
1524 | { | |
9b7292ce | 1525 | if (!ConfigFile) |
23cf13da | 1526 | ConfigFile = xstrdup(DEFAULT_CONFIG_FILE); |
62e76326 | 1527 | |
9b7292ce | 1528 | assert(!configured_once); |
62e76326 | 1529 | |
9b7292ce | 1530 | Mem::Init(); |
62e76326 | 1531 | |
f53969cc | 1532 | storeFsInit(); /* required for config parsing */ |
62e76326 | 1533 | |
af6a12ee | 1534 | Fs::Init(); |
7b5b7ba8 | 1535 | |
b9ae18aa | 1536 | /* May not be needed for parsing, have not audited for such */ |
1537 | DiskIOModule::SetupAllModules(); | |
1538 | ||
c8f4eac4 | 1539 | /* we may want the parsing process to set this up in the future */ |
4eac3407 | 1540 | Acl::Init(); |
89736861 | 1541 | Auth::Init(); /* required for config parsing. NOP if !USE_AUTH */ |
055421ee AJ |
1542 | Ip::ProbeTransport(); // determine IPv4 or IPv6 capabilities before parsing. |
1543 | ||
31971e6a AJ |
1544 | Format::Token::Init(); // XXX: temporary. Use a runners registry of pre-parse runners instead. |
1545 | ||
d2dca19c AJ |
1546 | RunRegisteredHere(RegisteredRunner::bootstrapConfig); |
1547 | ||
8951901e | 1548 | try { |
3e310519 | 1549 | Configuration::Parse(); |
8951901e | 1550 | } catch (...) { |
3e310519 AR |
1551 | auto msg = ConfigurationFailureMessage(); |
1552 | if (opt_parse_cfg_only) { | |
1553 | debugs(3, DBG_CRITICAL, "FATAL: " << msg); | |
1554 | return EXIT_FAILURE; | |
1555 | } else { | |
1556 | fatal(msg.c_str()); | |
1557 | return EXIT_FAILURE; // unreachable | |
1558 | } | |
8951901e | 1559 | } |
62e76326 | 1560 | |
3e310519 AR |
1561 | if (opt_parse_cfg_only) |
1562 | return EXIT_SUCCESS; | |
9b7292ce | 1563 | } |
c642c141 | 1564 | setUmask(Config.umask); |
e99fa721 EB |
1565 | |
1566 | // Master optimization: Where possible, avoid pointless daemon fork() and/or | |
1567 | // pointless wait for the exclusive PID file lock. This optional/weak check | |
1568 | // is not applicable to kids because they always co-exist with their master. | |
1569 | if (opt_send_signal == -1 && IamMasterProcess()) | |
1570 | Instance::ThrowIfAlreadyRunning(); | |
e13ee7ad | 1571 | |
9b7292ce | 1572 | /* send signal to running copy and exit */ |
26ac0430 | 1573 | if (opt_send_signal != -1) { |
9b7292ce | 1574 | /* chroot if configured to run inside chroot */ |
133906f5 | 1575 | mainSetCwd(); |
a572d8be | 1576 | if (Config.chroot_dir) { |
a572d8be | 1577 | no_suid(); |
1578 | } else { | |
1579 | leave_suid(); | |
9b7292ce | 1580 | } |
62e76326 | 1581 | |
9b7292ce | 1582 | sendSignal(); |
e99fa721 | 1583 | return 0; |
9b7292ce | 1584 | } |
62e76326 | 1585 | |
34492237 | 1586 | debugs(1,2, "Doing post-config initialization"); |
520e0073 | 1587 | leave_suid(); |
21b7990f | 1588 | RunRegisteredHere(RegisteredRunner::finalizeConfig); |
9487bae9 | 1589 | |
01ac0a5b EB |
1590 | if (IamMasterProcess()) { |
1591 | if (InDaemonMode()) { | |
28bca1f7 | 1592 | watch_child(cmdLine); |
01ac0a5b EB |
1593 | // NOTREACHED |
1594 | } else { | |
1595 | Instance::WriteOurPid(); | |
1596 | } | |
dbf55289 | 1597 | } |
2ae5c85f | 1598 | |
01ac0a5b EB |
1599 | StartUsingConfig(); |
1600 | enter_suid(); | |
1601 | ||
26ac0430 | 1602 | if (opt_create_swap_dirs) { |
9b7292ce | 1603 | setEffectiveUser(); |
04632397 | 1604 | debugs(0, DBG_CRITICAL, "Creating missing swap directories"); |
c8f4eac4 | 1605 | Store::Root().create(); |
6c1962dd | 1606 | |
9b7292ce | 1607 | return 0; |
9b7292ce | 1608 | } |
62e76326 | 1609 | |
96c2bb61 AR |
1610 | if (IamPrimaryProcess()) |
1611 | CpuAffinityCheck(); | |
1612 | CpuAffinityInit(); | |
1613 | ||
95564b0d | 1614 | /* init comm module */ |
1615 | comm_init(); | |
62e76326 | 1616 | |
6c1962dd | 1617 | #if USE_WIN32_SERVICE |
1618 | ||
9b7292ce | 1619 | WIN32_svcstatusupdate(SERVICE_START_PENDING, 10000); |
6c1962dd | 1620 | |
1621 | #endif | |
1622 | ||
9b7292ce | 1623 | mainInitialize(); |
4d64d74a | 1624 | |
6c1962dd | 1625 | #if USE_WIN32_SERVICE |
1626 | ||
9b7292ce | 1627 | WIN32_svcstatusupdate(SERVICE_RUNNING, 0); |
6c1962dd | 1628 | |
1629 | #endif | |
1630 | ||
9b7292ce | 1631 | /* main loop */ |
a553a5a3 | 1632 | EventLoop mainLoop; |
62e76326 | 1633 | |
0a720258 | 1634 | SignalEngine signalEngine; |
6c1962dd | 1635 | |
9688b0ae | 1636 | mainLoop.registerEngine(&signalEngine); |
62e76326 | 1637 | |
8ff3fa2e | 1638 | /* TODO: stop requiring the singleton here */ |
1639 | mainLoop.registerEngine(EventScheduler::GetInstance()); | |
62e76326 | 1640 | |
8ff3fa2e | 1641 | StoreRootEngine store_engine; |
615f9581 | 1642 | |
8ff3fa2e | 1643 | mainLoop.registerEngine(&store_engine); |
a774fd3f | 1644 | |
8ff3fa2e | 1645 | CommSelectEngine comm_engine; |
1646 | ||
8ff3fa2e | 1647 | mainLoop.registerEngine(&comm_engine); |
1648 | ||
bef81ea5 | 1649 | mainLoop.setPrimaryEngine(&comm_engine); |
1650 | ||
8ff3fa2e | 1651 | /* use the standard time service */ |
98cacedb | 1652 | Time::Engine time_engine; |
8ff3fa2e | 1653 | |
1654 | mainLoop.setTimeService(&time_engine); | |
1655 | ||
7de94c8c | 1656 | if (IamCoordinatorProcess()) |
4299f876 | 1657 | AsyncJob::Start(Ipc::Coordinator::Instance()); |
095ec2b1 | 1658 | else if (UsingSmp() && (IamWorkerProcess() || IamDiskProcess())) |
4299f876 | 1659 | AsyncJob::Start(new Ipc::Strand); |
10cefb7b | 1660 | |
48d54e4d AJ |
1661 | /* at this point we are finished the synchronous startup. */ |
1662 | starting_up = 0; | |
1663 | ||
8ff3fa2e | 1664 | mainLoop.run(); |
1665 | ||
1666 | if (mainLoop.errcount == 10) | |
1667 | fatal_dump("Event loop exited with failure."); | |
1668 | ||
1669 | /* shutdown squid now */ | |
1670 | SquidShutdown(); | |
62e76326 | 1671 | |
9b7292ce | 1672 | /* NOTREACHED */ |
9b7292ce | 1673 | return 0; |
090089c4 | 1674 | } |
7690e8eb | 1675 | |
b8d8561b | 1676 | static void |
0673c0ba | 1677 | sendSignal(void) |
7690e8eb | 1678 | { |
6c1962dd | 1679 | #if USE_WIN32_SERVICE |
886e99cd AR |
1680 | // WIN32_sendSignal() does not need the PID value to signal, |
1681 | // but we must exit if there is no valid PID (TODO: Why?). | |
e99fa721 EB |
1682 | (void)Instance::Other(); |
1683 | if (!opt_signal_service) | |
1684 | throw TexcHere("missing -n command line switch"); | |
1685 | WIN32_sendSignal(opt_send_signal); | |
1686 | #else | |
1687 | const auto pid = Instance::Other(); | |
1688 | if (kill(pid, opt_send_signal) && | |
1689 | /* ignore permissions if just running check */ | |
1690 | !(opt_send_signal == 0 && errno == EPERM)) { | |
1691 | const auto savedErrno = errno; | |
1692 | throw TexcHere(ToSBuf("failed to send signal ", opt_send_signal, | |
1693 | " to Squid instance with PID ", pid, ": ", xstrerr(savedErrno))); | |
7690e8eb | 1694 | } |
e99fa721 | 1695 | #endif |
fedac7e5 | 1696 | /* signal successfully sent */ |
fedac7e5 | 1697 | } |
f95b8144 | 1698 | |
7aa9bb3e | 1699 | #if !_SQUID_WINDOWS_ |
e18d7fdc | 1700 | /* |
1701 | * This function is run when Squid is in daemon mode, just | |
1702 | * before the parent forks and starts up the child process. | |
1703 | * It can be used for admin-specific tasks, such as notifying | |
1704 | * someone that Squid is (re)started. | |
1705 | */ | |
1706 | static void | |
1707 | mainStartScript(const char *prog) | |
1708 | { | |
ef364f64 | 1709 | char script[MAXPATHLEN]; |
e18d7fdc | 1710 | char *t; |
1711 | size_t sl = 0; | |
1712 | pid_t cpid; | |
1713 | pid_t rpid; | |
1714 | xstrncpy(script, prog, MAXPATHLEN); | |
62e76326 | 1715 | |
e18d7fdc | 1716 | if ((t = strrchr(script, '/'))) { |
62e76326 | 1717 | *(++t) = '\0'; |
1718 | sl = strlen(script); | |
e18d7fdc | 1719 | } |
62e76326 | 1720 | |
e18d7fdc | 1721 | xstrncpy(&script[sl], squid_start_script, MAXPATHLEN - sl); |
62e76326 | 1722 | |
e18d7fdc | 1723 | if ((cpid = fork()) == 0) { |
62e76326 | 1724 | /* child */ |
aee3523a | 1725 | execl(script, squid_start_script, (char *)nullptr); |
482aa790 | 1726 | _exit(-1); |
e18d7fdc | 1727 | } else { |
62e76326 | 1728 | do { |
dbf55289 CT |
1729 | PidStatus status; |
1730 | rpid = WaitForOnePid(cpid, status, 0); | |
62e76326 | 1731 | } while (rpid != cpid); |
e18d7fdc | 1732 | } |
1733 | } | |
1734 | ||
00e2479d AR |
1735 | /// Initiates shutdown sequence. Shutdown ends when the last running kids stops. |
1736 | static void | |
1737 | masterShutdownStart() | |
1738 | { | |
1739 | if (AvoidSignalAction("shutdown", do_shutdown)) | |
1740 | return; | |
1741 | debugs(1, 2, "received shutdown command"); | |
1742 | shutting_down = 1; | |
1743 | } | |
a50bfe93 | 1744 | |
00e2479d | 1745 | /// Initiates reconfiguration sequence. See also: masterReconfigureFinish(). |
f95b8144 | 1746 | static void |
00e2479d | 1747 | masterReconfigureStart() |
f95b8144 | 1748 | { |
00e2479d AR |
1749 | if (AvoidSignalAction("reconfiguration", do_reconfigure)) |
1750 | return; | |
1751 | debugs(1, 2, "received reconfiguration command"); | |
1752 | reconfiguring = 1; | |
1753 | TheKids.forgetAllFailures(); | |
1754 | // TODO: hot-reconfiguration of the number of kids, kids revival delay, | |
1755 | // PID file location, etc. | |
1756 | } | |
a6201b10 | 1757 | |
00e2479d AR |
1758 | /// Ends reconfiguration sequence started by masterReconfigureStart(). |
1759 | static void | |
1760 | masterReconfigureFinish() | |
1761 | { | |
1762 | reconfiguring = 0; | |
1763 | } | |
1764 | ||
1765 | /// Reacts to the kid revival alarm. | |
1766 | static void | |
1767 | masterReviveKids() | |
1768 | { | |
1769 | if (AvoidSignalAction("kids revival", do_revive_kids)) | |
1770 | return; | |
1771 | debugs(1, 2, "woke up after ~" << Config.hopelessKidRevivalDelay << "s"); | |
1772 | // nothing to do here -- actual revival happens elsewhere in the main loop | |
1773 | // the alarm was needed just to wake us up so that we do a loop iteration | |
1774 | } | |
1775 | ||
1776 | static void | |
1777 | masterCheckAndBroadcastSignals() | |
1778 | { | |
dbf55289 | 1779 | if (do_shutdown) |
00e2479d AR |
1780 | masterShutdownStart(); |
1781 | if (do_reconfigure) | |
1782 | masterReconfigureStart(); | |
1783 | if (do_revive_kids) | |
1784 | masterReviveKids(); | |
1785 | ||
1786 | // emulate multi-step reconfiguration assumed by AvoidSignalAction() | |
1787 | if (reconfiguring) | |
1788 | masterReconfigureFinish(); | |
62e76326 | 1789 | |
dbf55289 CT |
1790 | BroadcastSignalIfAny(DebugSignal); |
1791 | BroadcastSignalIfAny(RotateSignal); | |
1792 | BroadcastSignalIfAny(ReconfigureSignal); | |
1793 | BroadcastSignalIfAny(ShutdownSignal); | |
00e2479d AR |
1794 | ReviveKidsSignal = -1; // alarms are not broadcasted |
1795 | } | |
1796 | ||
1797 | /// Maintains the following invariant: An alarm should be scheduled when and | |
1798 | /// only when there are hopeless kid(s) that cannot be immediately revived. | |
1799 | static void | |
1800 | masterMaintainKidRevivalSchedule() | |
1801 | { | |
1802 | const auto nextCheckDelay = TheKids.forgetOldFailures(); | |
1803 | assert(nextCheckDelay >= 0); | |
1804 | (void)alarm(static_cast<unsigned int>(nextCheckDelay)); // resets or cancels | |
1805 | if (nextCheckDelay) | |
1806 | debugs(1, 2, "will recheck hopeless kids in " << nextCheckDelay << " seconds"); | |
dbf55289 | 1807 | } |
62e76326 | 1808 | |
dbf55289 CT |
1809 | static inline bool |
1810 | masterSignaled() | |
1811 | { | |
00e2479d AR |
1812 | return (DebugSignal > 0 || RotateSignal > 0 || ReconfigureSignal > 0 || |
1813 | ShutdownSignal > 0 || ReviveKidsSignal > 0); | |
dbf55289 | 1814 | } |
62e76326 | 1815 | |
57402eed AR |
1816 | /// makes the caller a daemon process running in the background |
1817 | static void | |
1818 | GoIntoBackground() | |
d73c6e83 AW |
1819 | { |
1820 | pid_t pid; | |
1821 | if ((pid = fork()) < 0) { | |
1822 | int xerrno = errno; | |
6b9c8755 | 1823 | throw TexcHere(ToSBuf("failed to fork(2) the master process: ", xstrerr(xerrno))); |
d73c6e83 AW |
1824 | } else if (pid > 0) { |
1825 | // parent | |
61be1d8e AR |
1826 | // The fork() effectively duped any saved debugs() messages. For |
1827 | // simplicity sake, let the child process deal with them. | |
1828 | Debug::ForgetSaved(); | |
d73c6e83 AW |
1829 | exit(EXIT_SUCCESS); |
1830 | } | |
6b9c8755 | 1831 | // child, running as a background daemon |
e6dbb95a | 1832 | Must(setsid() > 0); // ought to succeed after fork() |
d73c6e83 | 1833 | } |
00e2479d AR |
1834 | |
1835 | static void | |
1836 | masterExit() | |
1837 | { | |
1838 | if (TheKids.someSignaled(SIGINT) || TheKids.someSignaled(SIGTERM)) { | |
1839 | syslog(LOG_ALERT, "Exiting due to unexpected forced shutdown"); | |
1840 | exit(EXIT_FAILURE); | |
1841 | } | |
1842 | ||
1843 | if (TheKids.allHopeless()) { | |
1844 | syslog(LOG_ALERT, "Exiting due to repeated, frequent failures"); | |
1845 | exit(EXIT_FAILURE); | |
1846 | } | |
1847 | ||
1848 | exit(EXIT_SUCCESS); | |
1849 | } | |
1850 | ||
57402eed | 1851 | #endif /* !_SQUID_WINDOWS_ */ |
d73c6e83 | 1852 | |
dbf55289 | 1853 | static void |
28bca1f7 | 1854 | watch_child(const CommandLine &masterCommand) |
dbf55289 CT |
1855 | { |
1856 | #if !_SQUID_WINDOWS_ | |
e3a3b845 | 1857 | pid_t pid; |
c99c5397 | 1858 | #ifdef TIOCNOTTY |
1859 | ||
54f742e7 | 1860 | int i; |
c99c5397 | 1861 | #endif |
1862 | ||
742724a4 | 1863 | int nullfd; |
62e76326 | 1864 | |
00e2479d AR |
1865 | // TODO: zero values are not supported because they result in |
1866 | // misconfigured SMP Squid instances running forever, endlessly | |
1867 | // restarting each dying kid. | |
1868 | if (Config.hopelessKidRevivalDelay <= 0) | |
1869 | throw TexcHere("hopeless_kid_revival_delay must be positive"); | |
1870 | ||
01ac0a5b EB |
1871 | enter_suid(); |
1872 | ||
7dbca7a4 | 1873 | openlog(APP_SHORTNAME, LOG_PID | LOG_NDELAY | LOG_CONS, LOG_LOCAL4); |
62e76326 | 1874 | |
d73c6e83 AW |
1875 | if (!opt_foreground) |
1876 | GoIntoBackground(); | |
62e76326 | 1877 | |
efd900cb | 1878 | closelog(); |
62e76326 | 1879 | |
54f742e7 | 1880 | #ifdef TIOCNOTTY |
62e76326 | 1881 | |
c4aefe96 | 1882 | if ((i = open("/dev/tty", O_RDWR | O_TEXT)) >= 0) { |
a1b1756c | 1883 | ioctl(i, TIOCNOTTY, nullptr); |
62e76326 | 1884 | close(i); |
54f742e7 | 1885 | } |
62e76326 | 1886 | |
54f742e7 | 1887 | #endif |
b05490a8 | 1888 | |
7f6ffd15 | 1889 | /* |
1890 | * RBCOLLINS - if cygwin stackdumps when squid is run without | |
1891 | * -N, check the cygwin1.dll version, it needs to be AT LEAST | |
1892 | * 1.1.3. execvp had a bit overflow error in a loop.. | |
1893 | */ | |
742724a4 | 1894 | /* Connect stdio to /dev/null in daemon mode */ |
4da086c4 | 1895 | nullfd = open(_PATH_DEVNULL, O_RDWR | O_TEXT); |
62e76326 | 1896 | |
b69e9ffa AJ |
1897 | if (nullfd < 0) { |
1898 | int xerrno = errno; | |
1899 | fatalf(_PATH_DEVNULL " %s\n", xstrerr(xerrno)); | |
1900 | } | |
e4a1325e | 1901 | |
742724a4 | 1902 | dup2(nullfd, 0); |
62e76326 | 1903 | |
61be1d8e | 1904 | if (!Debug::StderrEnabled()) { |
62e76326 | 1905 | dup2(nullfd, 1); |
1906 | dup2(nullfd, 2); | |
742724a4 | 1907 | } |
62e76326 | 1908 | |
01ac0a5b | 1909 | leave_suid(); |
e99fa721 | 1910 | Instance::WriteOurPid(); |
01ac0a5b EB |
1911 | StartUsingConfig(); |
1912 | enter_suid(); | |
dbf55289 CT |
1913 | |
1914 | #if defined(_SQUID_LINUX_THREADS_) | |
1915 | squid_signal(SIGQUIT, rotate_logs, 0); | |
1916 | squid_signal(SIGTRAP, sigusr2_handle, 0); | |
1917 | #else | |
1918 | squid_signal(SIGUSR1, rotate_logs, 0); | |
1919 | squid_signal(SIGUSR2, sigusr2_handle, 0); | |
1920 | #endif | |
1921 | ||
1922 | squid_signal(SIGHUP, reconfigure, 0); | |
1923 | ||
1924 | squid_signal(SIGTERM, master_shutdown, 0); | |
00e2479d | 1925 | squid_signal(SIGALRM, master_revive_kids, 0); |
dbf55289 CT |
1926 | squid_signal(SIGINT, master_shutdown, 0); |
1927 | #ifdef SIGTTIN | |
1928 | squid_signal(SIGTTIN, master_shutdown, 0); | |
1929 | #endif | |
ca4b9ee6 | 1930 | |
13aeac35 AR |
1931 | if (Config.workers > 128) { |
1932 | syslog(LOG_ALERT, "Suspiciously high workers value: %d", | |
5667a628 | 1933 | Config.workers); |
007d775d | 1934 | // but we keep going in hope that user knows best |
5667a628 | 1935 | } |
095ec2b1 AR |
1936 | TheKids.init(); |
1937 | ||
00e2479d AR |
1938 | configured_once = 1; |
1939 | ||
a2515f86 | 1940 | syslog(LOG_NOTICE, "Squid Parent: will start %d kids", (int)TheKids.count()); |
007d775d AR |
1941 | |
1942 | // keep [re]starting kids until it is time to quit | |
f95b8144 | 1943 | for (;;) { |
dbf55289 | 1944 | bool mainStartScriptCalled = false; |
007d775d | 1945 | // start each kid that needs to be [re]started; once |
dbf55289 | 1946 | for (int i = TheKids.count() - 1; i >= 0 && !shutting_down; --i) { |
007d775d | 1947 | Kid& kid = TheKids.get(i); |
ca4b9ee6 | 1948 | if (!kid.shouldRestart()) |
007d775d AR |
1949 | continue; |
1950 | ||
dbf55289 | 1951 | if (!mainStartScriptCalled) { |
28bca1f7 | 1952 | mainStartScript(masterCommand.arg0()); |
dbf55289 CT |
1953 | mainStartScriptCalled = true; |
1954 | } | |
1955 | ||
28bca1f7 EB |
1956 | // These are only needed by the forked child below, but let's keep |
1957 | // them out of that "no man's land" between fork() and execvp(). | |
1958 | auto kidCommand = masterCommand; | |
1959 | kidCommand.resetArg0(kid.processName().c_str()); | |
1960 | assert(!kidCommand.hasOption(optKid)); | |
1961 | kidCommand.pushFrontOption("--kid", kid.gist().c_str()); | |
1962 | ||
007d775d AR |
1963 | if ((pid = fork()) == 0) { |
1964 | /* child */ | |
1965 | openlog(APP_SHORTNAME, LOG_PID | LOG_NDELAY | LOG_CONS, LOG_LOCAL4); | |
28bca1f7 | 1966 | (void)execvp(masterCommand.arg0(), kidCommand.argv()); |
b69e9ffa AJ |
1967 | int xerrno = errno; |
1968 | syslog(LOG_ALERT, "execvp failed: %s", xstrerr(xerrno)); | |
007d775d AR |
1969 | } |
1970 | ||
1971 | kid.start(pid); | |
095ec2b1 | 1972 | syslog(LOG_NOTICE, "Squid Parent: %s process %d started", |
28bca1f7 | 1973 | kid.processName().c_str(), pid); |
62e76326 | 1974 | } |
1975 | ||
1976 | /* parent */ | |
7dbca7a4 | 1977 | openlog(APP_SHORTNAME, LOG_PID | LOG_NDELAY | LOG_CONS, LOG_LOCAL4); |
62e76326 | 1978 | |
dbf55289 CT |
1979 | // If Squid received a signal while checking for dying kids (below) or |
1980 | // starting new kids (above), then do a fast check for a new dying kid | |
1981 | // (WaitForAnyPid with the WNOHANG option) and continue to forward | |
1982 | // signals to kids. Otherwise, wait for a kid to die or for a signal | |
1983 | // to abort the blocking WaitForAnyPid() call. | |
1984 | // With the WNOHANG option, we could check whether WaitForAnyPid() was | |
5c634111 | 1985 | // aborted by a dying kid or a signal, but it is not required: The |
dbf55289 CT |
1986 | // next do/while loop will check again for any dying kids. |
1987 | int waitFlag = 0; | |
1988 | if (masterSignaled()) | |
1989 | waitFlag = WNOHANG; | |
57402eed | 1990 | PidStatus status; |
dbf55289 | 1991 | pid = WaitForAnyPid(status, waitFlag); |
00e2479d | 1992 | getCurrentTime(); |
dbf55289 CT |
1993 | |
1994 | // check for a stopped kid | |
00e2479d | 1995 | if (Kid *kid = pid > 0 ? TheKids.find(pid) : nullptr) |
dbf55289 | 1996 | kid->stop(status); |
00e2479d | 1997 | else if (pid > 0) |
dbf55289 | 1998 | syslog(LOG_NOTICE, "Squid Parent: unknown child process %d exited", pid); |
00e2479d AR |
1999 | |
2000 | masterCheckAndBroadcastSignals(); | |
2001 | masterMaintainKidRevivalSchedule(); | |
62e76326 | 2002 | |
ca4b9ee6 | 2003 | if (!TheKids.someRunning() && !TheKids.shouldRestartSome()) { |
520e0073 | 2004 | leave_suid(); |
21b7990f AR |
2005 | // XXX: Master process has no main loop and, hence, should not call |
2006 | // RegisteredRunner::startShutdown which promises a loop iteration. | |
2007 | RunRegisteredHere(RegisteredRunner::finishShutdown); | |
520e0073 | 2008 | enter_suid(); |
00e2479d | 2009 | masterExit(); |
007d775d | 2010 | } |
f95b8144 | 2011 | } |
62e76326 | 2012 | |
bbe199dc | 2013 | /* NOTREACHED */ |
7aa9bb3e | 2014 | #endif /* _SQUID_WINDOWS_ */ |
a572d8be | 2015 | |
f95b8144 | 2016 | } |
fff6ad65 | 2017 | |
9ec1a1dc | 2018 | static void |
8ff3fa2e | 2019 | SquidShutdown() |
fff6ad65 | 2020 | { |
d71e4674 AR |
2021 | /* XXX: This function is called after the main loop has quit, which |
2022 | * means that no AsyncCalls would be called, including close handlers. | |
2023 | * TODO: We need to close/shut/free everything that needs calls before | |
2024 | * exiting the loop. | |
26ac0430 | 2025 | */ |
d71e4674 | 2026 | |
6c1962dd | 2027 | #if USE_WIN32_SERVICE |
2028 | WIN32_svcstatusupdate(SERVICE_STOP_PENDING, 10000); | |
2029 | #endif | |
2030 | ||
c59baaa8 | 2031 | debugs(1, Important(9), "Shutting down..."); |
95d2589c | 2032 | #if USE_SSL_CRTD |
23da195f | 2033 | Ssl::Helper::Shutdown(); |
2cef0ca6 | 2034 | #endif |
cb4f4424 | 2035 | #if USE_OPENSSL |
23da195f | 2036 | Ssl::CertValidationHelper::Shutdown(); |
95d2589c | 2037 | #endif |
95a83c22 | 2038 | redirectShutdown(); |
2039 | externalAclShutdown(); | |
65d448bc | 2040 | icpClosePorts(); |
d723bf6b | 2041 | #if USE_HTCP |
65d448bc | 2042 | htcpClosePorts(); |
d723bf6b | 2043 | #endif |
59ad6d31 | 2044 | #if SQUID_SNMP |
65d448bc | 2045 | snmpClosePorts(); |
320e9f36 | 2046 | #endif |
fff6ad65 | 2047 | releaseServerSockets(); |
d723bf6b | 2048 | commCloseAllSockets(); |
79039294 | 2049 | |
9a0a18de | 2050 | #if USE_DELAY_POOLS |
b67e2c8c | 2051 | DelayPools::FreePools(); |
515ec4dc | 2052 | #endif |
2f1431ea | 2053 | #if USE_AUTH |
0bcb6908 | 2054 | authenticateReset(); |
2f1431ea | 2055 | #endif |
6c1962dd | 2056 | #if USE_WIN32_SERVICE |
2057 | ||
2058 | WIN32_svcstatusupdate(SERVICE_STOP_PENDING, 10000); | |
2059 | #endif | |
e2b80c5b CT |
2060 | #if ICAP_CLIENT |
2061 | Adaptation::Icap::TheConfig.freeService(); | |
2062 | #endif | |
62e76326 | 2063 | |
c8f4eac4 | 2064 | Store::Root().sync(); /* Flush pending object writes/unlinks */ |
4d075ba0 | 2065 | |
f53969cc | 2066 | unlinkdClose(); /* after sync/flush. NOP if !USE_UNLINKD */ |
fc68f6b1 | 2067 | |
fff6ad65 | 2068 | storeDirWriteCleanLogs(0); |
2069 | PrintRusage(); | |
2070 | dumpMallocStats(); | |
f53969cc | 2071 | Store::Root().sync(); /* Flush log writes */ |
fff6ad65 | 2072 | storeLogClose(); |
2073 | accessLogClose(); | |
f53969cc | 2074 | Store::Root().sync(); /* Flush log close */ |
b9ae18aa | 2075 | DiskIOModule::FreeAllModules(); |
57fc379e | 2076 | |
fff6ad65 | 2077 | fdDumpOpen(); |
62e76326 | 2078 | |
236d1779 | 2079 | comm_exit(); |
62e76326 | 2080 | |
21b7990f | 2081 | RunRegisteredHere(RegisteredRunner::finishShutdown); |
62e76326 | 2082 | |
553d498c AJ |
2083 | memClean(); |
2084 | ||
c59baaa8 | 2085 | debugs(1, Important(10), "Squid Cache (Version " << version_string << "): Exiting normally."); |
62e76326 | 2086 | |
ae1feb30 | 2087 | exit(shutdown_status); |
fff6ad65 | 2088 | } |
bef81ea5 | 2089 |