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a47b9029 | 1 | |
30a4f2a8 | 2 | /* |
1fa994ac | 3 | * $Id: main.cc,v 1.405 2005/03/18 15:47:42 hno Exp $ |
30a4f2a8 | 4 | * |
5 | * DEBUG: section 1 Startup and Main Loop | |
6 | * AUTHOR: Harvest Derived | |
7 | * | |
2b6662ba | 8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 9 | * ---------------------------------------------------------- |
30a4f2a8 | 10 | * |
2b6662ba | 11 | * Squid is the result of efforts by numerous individuals from |
12 | * the Internet community; see the CONTRIBUTORS file for full | |
13 | * details. Many organizations have provided support for Squid's | |
14 | * development; see the SPONSORS file for full details. Squid is | |
15 | * Copyrighted (C) 2001 by the Regents of the University of | |
16 | * California; see the COPYRIGHT file for full details. Squid | |
17 | * incorporates software developed and/or copyrighted by other | |
18 | * sources; see the CREDITS file for full details. | |
30a4f2a8 | 19 | * |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, write to the Free Software | |
cbdec147 | 32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 33 | * |
30a4f2a8 | 34 | */ |
44a47c6e | 35 | |
36 | #include "squid.h" | |
450e0c10 | 37 | #include "AccessLogEntry.h" |
e6ccf245 | 38 | #include "authenticate.h" |
39 | #include "Store.h" | |
40 | #include "ICP.h" | |
528b2c61 | 41 | #include "HttpReply.h" |
42 | #include "Mem.h" | |
b0dd28ba | 43 | #include "ACLASN.h" |
44 | #include "ACL.h" | |
75faaa7a | 45 | #include "htcp.h" |
59b2d47f | 46 | #include "StoreFileSystem.h" |
b9ae18aa | 47 | #include "DiskIO/DiskIOModule.h" |
f900210a | 48 | #include "comm.h" |
c8f4eac4 | 49 | #include "SwapDir.h" |
44a47c6e | 50 | |
1a774556 | 51 | #if USE_WIN32_SERVICE |
52 | ||
53 | #include "squid_windows.h" | |
54 | #include <process.h> | |
55 | ||
56 | static int opt_install_service = FALSE; | |
57 | static int opt_remove_service = FALSE; | |
58 | static int opt_signal_service = FALSE; | |
59 | static int opt_command_line = FALSE; | |
60 | extern void WIN32_svcstatusupdate(DWORD, DWORD); | |
61 | void WINAPI WIN32_svcHandler(DWORD); | |
62 | ||
63 | #endif | |
64 | ||
30a4f2a8 | 65 | /* for error reporting from xmalloc and friends */ |
b293c4d8 | 66 | SQUIDCEXTERN void (*failure_notify) (const char *); |
30a4f2a8 | 67 | |
f1dc9b30 | 68 | static int opt_send_signal = -1; |
e13ee7ad | 69 | static int opt_parse_cfg_only = 0; |
30a4f2a8 | 70 | static int icpPortNumOverride = 1; /* Want to detect "-u 0" */ |
e13ee7ad | 71 | static int configured_once = 0; |
30a4f2a8 | 72 | #if MALLOC_DBG |
4d64d74a | 73 | static int malloc_debug_level = 0; |
30a4f2a8 | 74 | #endif |
5cd39a10 | 75 | static volatile int do_reconfigure = 0; |
76 | static volatile int do_rotate = 0; | |
2681d383 | 77 | static volatile int do_shutdown = 0; |
4d7add01 | 78 | |
5cd39a10 | 79 | static void mainRotate(void); |
80 | static void mainReconfigure(void); | |
f5b8bbc4 | 81 | static void mainInitialize(void); |
f5b8bbc4 | 82 | static void usage(void); |
83 | static void mainParseOptions(int, char **); | |
84 | static void sendSignal(void); | |
85 | static void serverConnectionsOpen(void); | |
bbe199dc | 86 | static void watch_child(char **); |
85407535 | 87 | static void setEffectiveUser(void); |
36a97e19 | 88 | #if MEM_GEN_TRACE |
89 | extern void log_trace_done(); | |
90 | extern void log_trace_init(char *); | |
91 | #endif | |
d723bf6b | 92 | static EVH SquidShutdown; |
b6a2f15e | 93 | static void mainSetCwd(void); |
efd900cb | 94 | static int checkRunningPid(void); |
85407535 | 95 | |
b293c4d8 | 96 | #ifndef _SQUID_MSWIN_ |
e18d7fdc | 97 | static const char *squid_start_script = "squid_start"; |
b293c4d8 | 98 | #endif |
e18d7fdc | 99 | |
9bc73deb | 100 | #if TEST_ACCESS |
101 | #include "test_access.c" | |
102 | #endif | |
103 | ||
b8d8561b | 104 | static void |
0673c0ba | 105 | usage(void) |
ccff9601 | 106 | { |
0ee4272b | 107 | fprintf(stderr, |
0e657244 | 108 | #if USE_WIN32_SERVICE |
b001e822 | 109 | "Usage: %s [-cdhirsvzCDFNRVYX] [-f config-file] [-[au] port] [-k signal] [-n name] [-O CommandLine]\n" |
0e657244 | 110 | #else |
b001e822 | 111 | "Usage: %s [-cdhsvzCDFNRVYX] [-f config-file] [-[au] port] [-k signal]\n" |
0e657244 | 112 | #endif |
62e76326 | 113 | " -a port Specify HTTP port number (default: %d).\n" |
114 | " -d level Write debugging to stderr also.\n" | |
115 | " -f file Use given config-file instead of\n" | |
116 | " %s\n" | |
117 | " -h Print help message.\n" | |
0e657244 | 118 | #if USE_WIN32_SERVICE |
119 | " -i Installs as a Windows Service (see -n option).\n" | |
120 | #endif | |
62e76326 | 121 | " -k reconfigure|rotate|shutdown|interrupt|kill|debug|check|parse\n" |
122 | " Parse configuration file, then send signal to \n" | |
123 | " running copy (except -k parse) and exit.\n" | |
0e657244 | 124 | #if USE_WIN32_SERVICE |
125 | " -n name Specify Windows Service name to use for service operations\n" | |
126 | " default is: " _WIN_SQUID_DEFAULT_SERVICE_NAME ".\n" | |
127 | " -r Removes a Windows Service (see -n option).\n" | |
128 | #endif | |
62e76326 | 129 | " -s Enable logging to syslog.\n" |
130 | " -u port Specify ICP port number (default: %d), disable with 0.\n" | |
131 | " -v Print version.\n" | |
132 | " -z Create swap directories\n" | |
133 | " -C Do not catch fatal signals.\n" | |
134 | " -D Disable initial DNS tests.\n" | |
135 | " -F Don't serve any requests until store is rebuilt.\n" | |
136 | " -N No daemon mode.\n" | |
0e657244 | 137 | #if USE_WIN32_SERVICE |
138 | " -O options\n" | |
139 | " Set Windows Service Command line options in Registry.\n" | |
140 | #endif | |
62e76326 | 141 | " -R Do not set REUSEADDR on port.\n" |
142 | " -S Double-check swap during rebuild.\n" | |
143 | " -V Virtual host httpd-accelerator.\n" | |
144 | " -X Force full debugging.\n" | |
145 | " -Y Only return UDP_HIT or UDP_MISS_NOFETCH during fast reload.\n", | |
146 | appname, CACHE_HTTP_PORT, DefaultConfigFile, CACHE_ICP_PORT); | |
77ffc99f | 147 | exit(1); |
ccff9601 | 148 | } |
149 | ||
b8d8561b | 150 | static void |
151 | mainParseOptions(int argc, char *argv[]) | |
090089c4 | 152 | { |
090089c4 | 153 | extern char *optarg; |
4d64d74a | 154 | int c; |
090089c4 | 155 | |
0e657244 | 156 | #if USE_WIN32_SERVICE |
157 | ||
9b7292ce | 158 | while ((c = getopt(argc, argv, "CDFNO:RSVYXa:d:f:hik:m::n:rsu:vz?")) != -1) |
0e657244 | 159 | #else |
160 | ||
9b7292ce | 161 | while ((c = getopt(argc, argv, "CDFNRSVYXa:d:f:hk:m::su:vz?")) != -1) |
0e657244 | 162 | #endif |
163 | ||
9b7292ce | 164 | { |
165 | ||
166 | switch (c) | |
167 | { | |
62e76326 | 168 | |
169 | case 'C': | |
170 | opt_catch_signals = 0; | |
171 | break; | |
172 | ||
173 | case 'D': | |
174 | opt_dns_tests = 0; | |
175 | break; | |
176 | ||
177 | case 'F': | |
178 | opt_foreground_rebuild = 1; | |
179 | break; | |
180 | ||
181 | case 'N': | |
182 | opt_no_daemon = 1; | |
183 | break; | |
0e657244 | 184 | #if USE_WIN32_SERVICE |
185 | ||
186 | case 'O': | |
187 | opt_command_line = 1; | |
188 | WIN32_Command_Line = xstrdup(optarg); | |
189 | break; | |
190 | #endif | |
62e76326 | 191 | |
192 | case 'R': | |
193 | opt_reuseaddr = 0; | |
194 | break; | |
195 | ||
196 | case 'S': | |
197 | opt_store_doublecheck = 1; | |
198 | break; | |
199 | ||
200 | case 'V': | |
201 | ||
202 | if (Config.Sockaddr.http) | |
203 | Config.Sockaddr.http->vhost = 1; | |
204 | ||
3f38a55e | 205 | #if USE_SSL |
62e76326 | 206 | |
207 | else if (Config.Sockaddr.https) | |
208 | Config.Sockaddr.https->http.vhost = 1; | |
209 | ||
210 | #endif | |
211 | ||
212 | else | |
213 | fatal("No http_port specified\n"); | |
214 | ||
215 | break; | |
216 | ||
217 | case 'X': | |
218 | /* force full debugging */ | |
219 | sigusr2_handle(SIGUSR2); | |
220 | ||
221 | break; | |
222 | ||
223 | case 'Y': | |
224 | opt_reload_hit_only = 1; | |
225 | ||
226 | break; | |
227 | ||
0e657244 | 228 | #if USE_WIN32_SERVICE |
229 | ||
230 | case 'i': | |
231 | opt_install_service = TRUE; | |
232 | ||
233 | break; | |
234 | ||
235 | #endif | |
236 | ||
62e76326 | 237 | case 'a': |
238 | add_http_port(optarg); | |
239 | ||
240 | break; | |
241 | ||
242 | case 'd': | |
243 | opt_debug_stderr = atoi(optarg); | |
244 | ||
245 | break; | |
246 | ||
247 | case 'f': | |
248 | xfree(ConfigFile); | |
249 | ||
250 | ConfigFile = xstrdup(optarg); | |
251 | ||
252 | break; | |
253 | ||
254 | case 'h': | |
255 | usage(); | |
256 | ||
257 | break; | |
258 | ||
259 | case 'k': | |
260 | if ((int) strlen(optarg) < 1) | |
261 | usage(); | |
262 | ||
263 | if (!strncmp(optarg, "reconfigure", strlen(optarg))) | |
264 | opt_send_signal = SIGHUP; | |
265 | else if (!strncmp(optarg, "rotate", strlen(optarg))) | |
7e7a0442 | 266 | #ifdef _SQUID_LINUX_THREADS_ |
62e76326 | 267 | |
268 | opt_send_signal = SIGQUIT; | |
269 | ||
e3175d1f | 270 | #else |
62e76326 | 271 | |
272 | opt_send_signal = SIGUSR1; | |
273 | ||
e3175d1f | 274 | #endif |
62e76326 | 275 | |
276 | else if (!strncmp(optarg, "debug", strlen(optarg))) | |
7e7a0442 | 277 | #ifdef _SQUID_LINUX_THREADS_ |
62e76326 | 278 | |
279 | opt_send_signal = SIGTRAP; | |
280 | ||
e3175d1f | 281 | #else |
62e76326 | 282 | |
283 | opt_send_signal = SIGUSR2; | |
284 | ||
285 | #endif | |
286 | ||
287 | else if (!strncmp(optarg, "shutdown", strlen(optarg))) | |
288 | opt_send_signal = SIGTERM; | |
289 | else if (!strncmp(optarg, "interrupt", strlen(optarg))) | |
290 | opt_send_signal = SIGINT; | |
291 | else if (!strncmp(optarg, "kill", strlen(optarg))) | |
292 | opt_send_signal = SIGKILL; | |
293 | else if (!strncmp(optarg, "check", strlen(optarg))) | |
294 | opt_send_signal = 0; /* SIGNULL */ | |
295 | else if (!strncmp(optarg, "parse", strlen(optarg))) | |
296 | opt_parse_cfg_only = 1; /* parse cfg file only */ | |
297 | else | |
298 | usage(); | |
299 | ||
300 | break; | |
301 | ||
302 | case 'm': | |
303 | if (optarg) { | |
30a4f2a8 | 304 | #if MALLOC_DBG |
62e76326 | 305 | malloc_debug_level = atoi(optarg); |
306 | /* NOTREACHED */ | |
307 | break; | |
30a4f2a8 | 308 | #else |
62e76326 | 309 | |
310 | fatal("Need to add -DMALLOC_DBG when compiling to use -mX option"); | |
311 | /* NOTREACHED */ | |
33ab18e8 | 312 | #endif |
62e76326 | 313 | |
314 | } else { | |
33ab18e8 | 315 | #if XMALLOC_TRACE |
62e76326 | 316 | xmalloc_trace = !xmalloc_trace; |
33ab18e8 | 317 | #else |
62e76326 | 318 | |
319 | fatal("Need to configure --enable-xmalloc-debug-trace to use -m option"); | |
30a4f2a8 | 320 | #endif |
62e76326 | 321 | |
322 | } | |
323 | ||
0e657244 | 324 | #if USE_WIN32_SERVICE |
325 | ||
326 | case 'n': | |
327 | xfree(WIN32_Service_name); | |
328 | ||
329 | WIN32_Service_name = xstrdup(optarg); | |
330 | ||
331 | opt_signal_service = TRUE; | |
332 | ||
333 | break; | |
334 | ||
335 | case 'r': | |
336 | opt_remove_service = TRUE; | |
337 | ||
338 | break; | |
339 | ||
340 | #endif | |
341 | ||
62e76326 | 342 | case 's': |
c307aec3 | 343 | #if HAVE_SYSLOG |
62e76326 | 344 | |
345 | opt_syslog_enable = 1; | |
0e657244 | 346 | |
62e76326 | 347 | break; |
0e657244 | 348 | |
c307aec3 | 349 | #else |
62e76326 | 350 | |
351 | fatal("Logging to syslog not available on this platform"); | |
0e657244 | 352 | |
62e76326 | 353 | /* NOTREACHED */ |
354 | #endif | |
355 | ||
356 | case 'u': | |
357 | icpPortNumOverride = atoi(optarg); | |
358 | ||
359 | if (icpPortNumOverride < 0) | |
360 | icpPortNumOverride = 0; | |
361 | ||
362 | break; | |
363 | ||
364 | case 'v': | |
365 | printf("Squid Cache: Version %s\nconfigure options: %s\n", version_string, SQUID_CONFIGURE_OPTIONS); | |
366 | ||
1a774556 | 367 | #if USE_WIN32_SERVICE |
368 | ||
369 | printf("Compiled as Windows System Service.\n"); | |
370 | ||
371 | #endif | |
372 | ||
62e76326 | 373 | exit(0); |
374 | ||
375 | /* NOTREACHED */ | |
376 | ||
377 | case 'z': | |
378 | opt_create_swap_dirs = 1; | |
379 | ||
380 | break; | |
381 | ||
382 | case '?': | |
383 | ||
384 | default: | |
385 | usage(); | |
386 | ||
387 | break; | |
388 | } | |
9b7292ce | 389 | |
090089c4 | 390 | } |
4d64d74a | 391 | } |
090089c4 | 392 | |
7a2f978b | 393 | /* ARGSUSED */ |
b293c4d8 | 394 | void |
9b7292ce | 395 | rotate_logs(int sig) |
396 | { | |
5cd39a10 | 397 | do_rotate = 1; |
a50bfe93 | 398 | #ifndef _SQUID_MSWIN_ |
30a4f2a8 | 399 | #if !HAVE_SIGACTION |
62e76326 | 400 | |
30a4f2a8 | 401 | signal(sig, rotate_logs); |
402 | #endif | |
a50bfe93 | 403 | #endif |
30a4f2a8 | 404 | } |
405 | ||
7a2f978b | 406 | /* ARGSUSED */ |
b293c4d8 | 407 | void |
9b7292ce | 408 | reconfigure(int sig) |
409 | { | |
5cd39a10 | 410 | do_reconfigure = 1; |
a50bfe93 | 411 | #ifndef _SQUID_MSWIN_ |
30a4f2a8 | 412 | #if !HAVE_SIGACTION |
62e76326 | 413 | |
30a4f2a8 | 414 | signal(sig, reconfigure); |
415 | #endif | |
a50bfe93 | 416 | #endif |
30a4f2a8 | 417 | } |
418 | ||
b8d8561b | 419 | void |
9b7292ce | 420 | shut_down(int sig) |
421 | { | |
2681d383 | 422 | do_shutdown = sig == SIGINT ? -1 : 1; |
a50bfe93 | 423 | #ifndef _SQUID_MSWIN_ |
cadc2d55 | 424 | #ifdef KILL_PARENT_OPT |
62e76326 | 425 | |
5cd39a10 | 426 | if (getppid() > 1) { |
36584579 | 427 | debugs(1, 1, "Killing RunCache, pid " << getppid()); |
62e76326 | 428 | |
429 | if (kill(getppid(), sig) < 0) | |
36584579 | 430 | debugs(1, 1, "kill " << getppid() << ": " << xstrerror()); |
88738790 | 431 | } |
62e76326 | 432 | |
cadc2d55 | 433 | #endif |
6e40f263 | 434 | #if SA_RESETHAND == 0 |
435 | signal(SIGTERM, SIG_DFL); | |
62e76326 | 436 | |
6e40f263 | 437 | signal(SIGINT, SIG_DFL); |
62e76326 | 438 | |
a50bfe93 | 439 | #endif |
6e40f263 | 440 | #endif |
30a4f2a8 | 441 | } |
442 | ||
24382924 | 443 | static void |
9b7292ce | 444 | serverConnectionsOpen(void) |
445 | { | |
d193a436 | 446 | clientOpenListenSockets(); |
15df8349 | 447 | icpConnectionsOpen(); |
ace287ee | 448 | #if USE_HTCP |
62e76326 | 449 | |
ace287ee | 450 | htcpInit(); |
451 | #endif | |
678c6099 | 452 | #ifdef SQUID_SNMP |
62e76326 | 453 | |
3265e68d | 454 | snmpConnectionOpen(); |
320e9f36 | 455 | #endif |
eb824054 | 456 | #if USE_WCCP |
62e76326 | 457 | |
320e9f36 | 458 | wccpConnectionOpen(); |
2bbd722b | 459 | #endif |
62e76326 | 460 | |
5ecceaa4 | 461 | clientdbInit(); |
16b204c4 | 462 | icmpOpen(); |
67508012 | 463 | netdbInit(); |
f899fac1 | 464 | asnInit(); |
b0dd28ba | 465 | ACL::Initialize(); |
85034133 | 466 | peerSelectInit(); |
afd88fbe | 467 | #if USE_CARP |
62e76326 | 468 | |
afd88fbe | 469 | carpInit(); |
470 | #endif | |
5f3f8d0e | 471 | } |
472 | ||
b8d8561b | 473 | void |
9b7292ce | 474 | serverConnectionsClose(void) |
475 | { | |
0a5a8601 | 476 | assert(shutting_down || reconfiguring); |
c0fbae16 | 477 | clientHttpConnectionsClose(); |
17e6c0a1 | 478 | icpConnectionShutdown(); |
72549e05 | 479 | #if USE_HTCP |
62e76326 | 480 | |
72549e05 | 481 | htcpSocketShutdown(); |
482 | #endif | |
62e76326 | 483 | |
c0fbae16 | 484 | icmpClose(); |
15df8349 | 485 | #ifdef SQUID_SNMP |
62e76326 | 486 | |
17e6c0a1 | 487 | snmpConnectionShutdown(); |
320e9f36 | 488 | #endif |
eb824054 | 489 | #if USE_WCCP |
62e76326 | 490 | |
320e9f36 | 491 | wccpConnectionShutdown(); |
15df8349 | 492 | #endif |
62e76326 | 493 | |
4bac8de8 | 494 | asnFreeMemory(); |
5f3f8d0e | 495 | } |
496 | ||
b8d8561b | 497 | static void |
9b7292ce | 498 | mainReconfigure(void) |
499 | { | |
eba1bf37 | 500 | debug(1, 1) ("Reconfiguring Squid Cache (version %s)...\n", version_string); |
5cd39a10 | 501 | reconfiguring = 1; |
0ffd22bc | 502 | /* Already called serverConnectionsClose and ipcacheShutdownServers() */ |
15df8349 | 503 | serverConnectionsClose(); |
17e6c0a1 | 504 | icpConnectionClose(); |
72549e05 | 505 | #if USE_HTCP |
62e76326 | 506 | |
72549e05 | 507 | htcpSocketClose(); |
508 | #endif | |
17e6c0a1 | 509 | #ifdef SQUID_SNMP |
62e76326 | 510 | |
17e6c0a1 | 511 | snmpConnectionClose(); |
320e9f36 | 512 | #endif |
eb824054 | 513 | #if USE_WCCP |
62e76326 | 514 | |
320e9f36 | 515 | wccpConnectionClose(); |
17e6c0a1 | 516 | #endif |
3c573763 | 517 | #if USE_DNSSERVERS |
62e76326 | 518 | |
74addf6c | 519 | dnsShutdown(); |
3c573763 | 520 | #else |
62e76326 | 521 | |
7b724b86 | 522 | idnsShutdown(); |
eb824054 | 523 | #endif |
62e76326 | 524 | |
74addf6c | 525 | redirectShutdown(); |
526 | authenticateShutdown(); | |
d9572179 | 527 | externalAclShutdown(); |
2db68ce5 | 528 | storeDirCloseSwapLogs(); |
2e923080 | 529 | storeLogClose(); |
530 | accessLogClose(); | |
531 | useragentLogClose(); | |
532 | refererCloseLog(); | |
c68e9c6b | 533 | errorClean(); |
3aa4adbc | 534 | enter_suid(); /* root to read config file */ |
00fac1f8 | 535 | parseConfigFile(ConfigFile); |
3aa4adbc | 536 | setEffectiveUser(); |
b6f794d6 | 537 | _db_init(Config.Log.log, Config.debugOptions); |
429fdbec | 538 | ipcache_restart(); /* clear stuck entries */ |
94439e4e | 539 | authenticateUserCacheRestart(); /* clear stuck ACL entries */ |
429fdbec | 540 | fqdncache_restart(); /* sigh, fqdncache too */ |
0e70aa1e | 541 | parseEtcHosts(); |
53ad48e6 | 542 | errorInitialize(); /* reload error pages */ |
2e923080 | 543 | accessLogInit(); |
544 | storeLogOpen(); | |
545 | useragentOpenLog(); | |
546 | refererOpenLog(); | |
3c573763 | 547 | #if USE_DNSSERVERS |
62e76326 | 548 | |
74addf6c | 549 | dnsInit(); |
3c573763 | 550 | #else |
62e76326 | 551 | |
7b724b86 | 552 | idnsInit(); |
eb824054 | 553 | #endif |
62e76326 | 554 | |
74addf6c | 555 | redirectInit(); |
e6ccf245 | 556 | authenticateInit(&Config.authConfiguration); |
d9572179 | 557 | externalAclInit(); |
1f38f50a | 558 | #if USE_WCCP |
62e76326 | 559 | |
1f38f50a | 560 | wccpInit(); |
561 | #endif | |
62e76326 | 562 | |
0ffd22bc | 563 | serverConnectionsOpen(); |
a86029b9 | 564 | neighbors_init(); |
2db68ce5 | 565 | storeDirOpenSwapLogs(); |
9c021a38 | 566 | mimeInit(Config.mimeTablePathname); |
b8890359 | 567 | writePidFile(); /* write PID file */ |
aebbcd07 | 568 | debug(1, 1) ("Ready to serve requests.\n"); |
5cd39a10 | 569 | reconfiguring = 0; |
570 | } | |
571 | ||
572 | static void | |
9b7292ce | 573 | mainRotate(void) |
574 | { | |
5cd39a10 | 575 | icmpClose(); |
3c573763 | 576 | #if USE_DNSSERVERS |
62e76326 | 577 | |
e40aa8da | 578 | dnsShutdown(); |
3c573763 | 579 | #endif |
62e76326 | 580 | |
e40aa8da | 581 | redirectShutdown(); |
582 | authenticateShutdown(); | |
d9572179 | 583 | externalAclShutdown(); |
5cd39a10 | 584 | _db_rotate_log(); /* cache.log */ |
585 | storeDirWriteCleanLogs(1); | |
586 | storeLogRotate(); /* store.log */ | |
587 | accessLogRotate(); /* access.log */ | |
588 | useragentRotateLog(); /* useragent.log */ | |
fd2c5549 | 589 | refererRotateLog(); /* referer.log */ |
225644d7 | 590 | #if WIP_FWD_LOG |
62e76326 | 591 | |
225644d7 | 592 | fwdLogRotate(); |
593 | #endif | |
62e76326 | 594 | |
5cd39a10 | 595 | icmpOpen(); |
3c573763 | 596 | #if USE_DNSSERVERS |
62e76326 | 597 | |
e40aa8da | 598 | dnsInit(); |
3c573763 | 599 | #endif |
62e76326 | 600 | |
e40aa8da | 601 | redirectInit(); |
e6ccf245 | 602 | authenticateInit(&Config.authConfiguration); |
d9572179 | 603 | externalAclInit(); |
5f3f8d0e | 604 | } |
605 | ||
067bea91 | 606 | static void |
9b7292ce | 607 | setEffectiveUser(void) |
608 | { | |
85407535 | 609 | leave_suid(); /* Run as non privilegied user */ |
cd377065 | 610 | #ifdef _SQUID_OS2_ |
62e76326 | 611 | |
cd377065 | 612 | return; |
613 | #endif | |
62e76326 | 614 | |
85407535 | 615 | if (geteuid() == 0) { |
62e76326 | 616 | debug(0, 0) ("Squid is not safe to run as root! If you must\n"); |
617 | debug(0, 0) ("start Squid as root, then you must configure\n"); | |
618 | debug(0, 0) ("it to run as a non-priveledged user with the\n"); | |
619 | debug(0, 0) ("'cache_effective_user' option in the config file.\n"); | |
620 | fatal("Don't run Squid as root, set 'cache_effective_user'!"); | |
85407535 | 621 | } |
622 | } | |
623 | ||
b6a2f15e | 624 | static void |
9b7292ce | 625 | mainSetCwd(void) |
626 | { | |
4a504376 | 627 | char pathbuf[MAXPATHLEN]; |
62e76326 | 628 | |
b6a2f15e | 629 | if (Config.coredump_dir) { |
62e76326 | 630 | if (0 == strcmp("none", Config.coredump_dir)) { |
631 | (void) 0; | |
632 | } else if (chdir(Config.coredump_dir) == 0) { | |
633 | debug(0, 1) ("Set Current Directory to %s\n", Config.coredump_dir); | |
634 | return; | |
635 | } else { | |
636 | debug(50, 0) ("chdir: %s: %s\n", Config.coredump_dir, xstrerror()); | |
637 | } | |
b6a2f15e | 638 | } |
62e76326 | 639 | |
02e8115e | 640 | /* If we don't have coredump_dir or couldn't cd there, report current dir */ |
4a504376 | 641 | if (getcwd(pathbuf, MAXPATHLEN)) { |
62e76326 | 642 | debug(0, 1) ("Current Directory is %s\n", pathbuf); |
4a504376 | 643 | } else { |
62e76326 | 644 | debug(50, 0) ("WARNING: Can't find current directory, getcwd: %s\n", xstrerror()); |
4a504376 | 645 | } |
b6a2f15e | 646 | } |
647 | ||
b67e2c8c | 648 | #if DELAY_POOLS |
649 | #include "DelayPools.h" | |
650 | #endif | |
651 | ||
b8d8561b | 652 | static void |
9b7292ce | 653 | mainInitialize(void) |
654 | { | |
efd900cb | 655 | /* chroot if configured to run inside chroot */ |
62e76326 | 656 | |
efd900cb | 657 | if (Config.chroot_dir && chroot(Config.chroot_dir)) { |
62e76326 | 658 | fatal("failed to chroot"); |
efd900cb | 659 | } |
62e76326 | 660 | |
1758c627 | 661 | if (opt_catch_signals) { |
62e76326 | 662 | squid_signal(SIGSEGV, death, SA_NODEFER | SA_RESETHAND); |
663 | squid_signal(SIGBUS, death, SA_NODEFER | SA_RESETHAND); | |
44f99671 | 664 | } |
62e76326 | 665 | |
30a4f2a8 | 666 | squid_signal(SIGPIPE, SIG_IGN, SA_RESTART); |
667 | squid_signal(SIGCHLD, sig_child, SA_NODEFER | SA_RESTART); | |
44f99671 | 668 | |
85407535 | 669 | setEffectiveUser(); |
62e76326 | 670 | |
30a4f2a8 | 671 | if (icpPortNumOverride != 1) |
62e76326 | 672 | Config.Port.icp = (u_short) icpPortNumOverride; |
30a4f2a8 | 673 | |
b6f794d6 | 674 | _db_init(Config.Log.log, Config.debugOptions); |
62e76326 | 675 | |
5c5783a2 | 676 | fd_open(fileno(debug_log), FD_LOG, Config.Log.log); |
62e76326 | 677 | |
71a17702 | 678 | #if MEM_GEN_TRACE |
62e76326 | 679 | |
71a17702 | 680 | log_trace_init("/tmp/squid.alloc"); |
62e76326 | 681 | |
71a17702 | 682 | #endif |
62e76326 | 683 | |
a3d5953d | 684 | debug(1, 0) ("Starting Squid Cache version %s for %s...\n", |
62e76326 | 685 | version_string, |
686 | CONFIG_HOST_TYPE); | |
687 | ||
ec4daaa5 | 688 | #ifdef _SQUID_WIN32_ |
b293c4d8 | 689 | |
690 | if (WIN32_run_mode == _WIN_SQUID_RUN_MODE_SERVICE) { | |
691 | debug(1, 0) ("Running as %s Windows System Service on %s\n", WIN32_Service_name, WIN32_OS_string); | |
692 | debug(1, 0) ("Service command line is: %s\n", WIN32_Service_Command_Line); | |
693 | } else | |
694 | debug(1, 0) ("Running on %s\n",WIN32_OS_string); | |
695 | ||
696 | #endif | |
697 | ||
36584579 | 698 | debugs(1, 1, "Process ID " << getpid()); |
62e76326 | 699 | |
a3d5953d | 700 | debug(1, 1) ("With %d file descriptors available\n", Squid_MaxFD); |
5f3f8d0e | 701 | |
6c1962dd | 702 | #ifdef _SQUID_MSWIN_ |
703 | ||
704 | debug(1, 1) ("With %d CRT stdio descriptors available\n", _getmaxstdio()); | |
705 | ||
706 | if (WIN32_Socks_initialized) | |
707 | debug(1, 1)("Windows sockets initialized\n"); | |
708 | ||
709 | #endif | |
710 | ||
9f75c559 | 711 | if (!configured_once) |
62e76326 | 712 | disk_init(); /* disk_init must go before ipcache_init() */ |
713 | ||
5f3f8d0e | 714 | ipcache_init(); |
62e76326 | 715 | |
f88bb09c | 716 | fqdncache_init(); |
62e76326 | 717 | |
0e70aa1e | 718 | parseEtcHosts(); |
62e76326 | 719 | |
3c573763 | 720 | #if USE_DNSSERVERS |
62e76326 | 721 | |
74addf6c | 722 | dnsInit(); |
62e76326 | 723 | |
3c573763 | 724 | #else |
62e76326 | 725 | |
7b724b86 | 726 | idnsInit(); |
62e76326 | 727 | |
eb824054 | 728 | #endif |
62e76326 | 729 | |
74addf6c | 730 | redirectInit(); |
62e76326 | 731 | |
e6ccf245 | 732 | authenticateInit(&Config.authConfiguration); |
62e76326 | 733 | |
d9572179 | 734 | externalAclInit(); |
62e76326 | 735 | |
b012353a | 736 | useragentOpenLog(); |
62e76326 | 737 | |
fd2c5549 | 738 | refererOpenLog(); |
62e76326 | 739 | |
2ac76861 | 740 | httpHeaderInitModule(); /* must go before any header processing (e.g. the one in errorInitialize) */ |
62e76326 | 741 | |
2246b732 | 742 | httpReplyInitModule(); /* must go before accepting replies */ |
62e76326 | 743 | |
9b312a19 | 744 | errorInitialize(); |
62e76326 | 745 | |
7a2f978b | 746 | accessLogInit(); |
62e76326 | 747 | |
3898f57f | 748 | #if USE_IDENT |
62e76326 | 749 | |
05832ae1 | 750 | identInit(); |
62e76326 | 751 | |
3898f57f | 752 | #endif |
5e14bf6d | 753 | #ifdef SQUID_SNMP |
62e76326 | 754 | |
5e14bf6d | 755 | snmpInit(); |
62e76326 | 756 | |
5e14bf6d | 757 | #endif |
30a4f2a8 | 758 | #if MALLOC_DBG |
62e76326 | 759 | |
5f3f8d0e | 760 | malloc_debug(0, malloc_debug_level); |
62e76326 | 761 | |
5f3f8d0e | 762 | #endif |
763 | ||
dbe4fd8e | 764 | if (!configured_once) { |
a3d0a19d | 765 | #if USE_UNLINKD |
62e76326 | 766 | unlinkdInit(); |
767 | #endif | |
768 | ||
769 | urlInitialize(); | |
770 | cachemgrInit(); | |
771 | statInit(); | |
772 | storeInit(); | |
773 | mainSetCwd(); | |
774 | /* after this point we want to see the mallinfo() output */ | |
775 | do_mallinfo = 1; | |
776 | mimeInit(Config.mimeTablePathname); | |
777 | pconnInit(); | |
778 | refreshInit(); | |
0d7e5d78 | 779 | #if DELAY_POOLS |
62e76326 | 780 | |
781 | DelayPools::Init(); | |
0d7e5d78 | 782 | #endif |
62e76326 | 783 | |
784 | fwdInit(); | |
5f3f8d0e | 785 | } |
62e76326 | 786 | |
1f38f50a | 787 | #if USE_WCCP |
788 | wccpInit(); | |
62e76326 | 789 | |
1f38f50a | 790 | #endif |
62e76326 | 791 | |
2285407f | 792 | serverConnectionsOpen(); |
62e76326 | 793 | |
a86029b9 | 794 | neighbors_init(); |
62e76326 | 795 | |
efd900cb | 796 | if (Config.chroot_dir) |
62e76326 | 797 | no_suid(); |
798 | ||
dbe4fd8e | 799 | if (!configured_once) |
62e76326 | 800 | writePidFile(); /* write PID file */ |
0a5b9b32 | 801 | |
7e7a0442 | 802 | #ifdef _SQUID_LINUX_THREADS_ |
62e76326 | 803 | |
e3175d1f | 804 | squid_signal(SIGQUIT, rotate_logs, SA_RESTART); |
62e76326 | 805 | |
e3175d1f | 806 | squid_signal(SIGTRAP, sigusr2_handle, SA_RESTART); |
62e76326 | 807 | |
e3175d1f | 808 | #else |
62e76326 | 809 | |
30a4f2a8 | 810 | squid_signal(SIGUSR1, rotate_logs, SA_RESTART); |
62e76326 | 811 | |
30a4f2a8 | 812 | squid_signal(SIGUSR2, sigusr2_handle, SA_RESTART); |
62e76326 | 813 | |
9fc0b4b8 | 814 | #endif |
62e76326 | 815 | |
30a4f2a8 | 816 | squid_signal(SIGHUP, reconfigure, SA_RESTART); |
62e76326 | 817 | |
30a4f2a8 | 818 | squid_signal(SIGTERM, shut_down, SA_NODEFER | SA_RESETHAND | SA_RESTART); |
62e76326 | 819 | |
30a4f2a8 | 820 | squid_signal(SIGINT, shut_down, SA_NODEFER | SA_RESETHAND | SA_RESTART); |
62e76326 | 821 | |
58a39dc9 | 822 | memCheckInit(); |
62e76326 | 823 | |
aebbcd07 | 824 | debug(1, 1) ("Ready to serve requests.\n"); |
62e76326 | 825 | |
dbe4fd8e | 826 | if (!configured_once) { |
c8f4eac4 | 827 | eventAdd("storeMaintain", Store::Maintain, NULL, 1.0, 1); |
62e76326 | 828 | |
829 | if (Config.onoff.announce) | |
830 | eventAdd("start_announce", start_announce, NULL, 3600.0, 1); | |
831 | ||
832 | eventAdd("ipcache_purgelru", ipcache_purgelru, NULL, 10.0, 1); | |
833 | ||
834 | eventAdd("fqdncache_purgelru", fqdncache_purgelru, NULL, 15.0, 1); | |
835 | ||
88bfe092 | 836 | #if USE_XPROF_STATS |
62e76326 | 837 | |
838 | eventAdd("cpuProfiling", xprof_event, NULL, 1.0, 1); | |
839 | ||
88bfe092 | 840 | #endif |
62e76326 | 841 | |
842 | eventAdd("memPoolCleanIdlePools", Mem::CleanIdlePools, NULL, 15.0, 1); | |
f900210a | 843 | |
844 | eventAdd("commCheckHalfClosed", commCheckHalfClosed, NULL, 1.0, false); | |
4d7add01 | 845 | } |
62e76326 | 846 | |
dbe4fd8e | 847 | configured_once = 1; |
4d64d74a | 848 | } |
849 | ||
6c1962dd | 850 | #if USE_WIN32_SERVICE |
851 | /* When USE_WIN32_SERVICE is defined, the main function is placed in win32.cc */ | |
852 | extern "C" void WINAPI | |
853 | SquidMain(int argc, char **argv) | |
854 | #else | |
b8d8561b | 855 | int |
856 | main(int argc, char **argv) | |
9b7292ce | 857 | #endif |
858 | { | |
4d64d74a | 859 | int errcount = 0; |
9b7292ce | 860 | mode_t oldmask; |
4d64d74a | 861 | |
a4ba1105 | 862 | #if HAVE_SBRK |
62e76326 | 863 | |
9b7292ce | 864 | sbrk_start = sbrk(0); |
a4ba1105 | 865 | #endif |
866 | ||
3dc275d6 | 867 | Debug::parseOptions("ALL,1"); |
9b7292ce | 868 | debug_log = stderr; |
62e76326 | 869 | |
9b7292ce | 870 | if (FD_SETSIZE < Squid_MaxFD) |
871 | Squid_MaxFD = FD_SETSIZE; | |
399e85ea | 872 | |
ec4daaa5 | 873 | #ifdef _SQUID_WIN32_ |
6c1962dd | 874 | #ifdef USE_WIN32_SERVICE |
62e76326 | 875 | |
9b7292ce | 876 | if (WIN32_Subsystem_Init(&argc, &argv)) |
877 | return; | |
6c1962dd | 878 | |
879 | #else | |
880 | ||
9b7292ce | 881 | { |
882 | int WIN32_init_err; | |
6c1962dd | 883 | |
9b7292ce | 884 | if ((WIN32_init_err = WIN32_Subsystem_Init())) |
885 | return WIN32_init_err; | |
886 | } | |
6c1962dd | 887 | #endif |
62e76326 | 888 | |
0e6d05ef | 889 | #endif |
890 | ||
9b7292ce | 891 | /* call mallopt() before anything else */ |
0b29fe44 | 892 | #if HAVE_MALLOPT |
7328e889 | 893 | #ifdef M_GRAIN |
9b7292ce | 894 | /* Round up all sizes to a multiple of this */ |
895 | mallopt(M_GRAIN, 16); | |
62e76326 | 896 | |
7328e889 | 897 | #endif |
898 | #ifdef M_MXFAST | |
9b7292ce | 899 | /* biggest size that is considered a small block */ |
900 | mallopt(M_MXFAST, 256); | |
62e76326 | 901 | |
7328e889 | 902 | #endif |
903 | #ifdef M_NBLKS | |
9b7292ce | 904 | /* allocate this many small blocks at once */ |
905 | mallopt(M_NLBLKS, 32); | |
62e76326 | 906 | |
7328e889 | 907 | #endif |
908 | #endif /* HAVE_MALLOPT */ | |
909 | ||
9b7292ce | 910 | /* |
911 | * The plan here is to set the umask to 007 (deny others for | |
912 | * read,write,execute), but only if the umask is not already | |
913 | * set. Unfortunately, there is no way to get the current | |
914 | * umask value without setting it. | |
915 | */ | |
916 | oldmask = umask(S_IRWXO); | |
62e76326 | 917 | |
9b7292ce | 918 | if (oldmask) |
919 | umask(oldmask); | |
7e3ce7b9 | 920 | |
9b7292ce | 921 | memset(&local_addr, '\0', sizeof(struct in_addr)); |
62e76326 | 922 | |
9b7292ce | 923 | safe_inet_addr(localhost, &local_addr); |
62e76326 | 924 | |
9b7292ce | 925 | memset(&any_addr, '\0', sizeof(struct in_addr)); |
62e76326 | 926 | |
9b7292ce | 927 | safe_inet_addr("0.0.0.0", &any_addr); |
62e76326 | 928 | |
9b7292ce | 929 | memset(&no_addr, '\0', sizeof(struct in_addr)); |
62e76326 | 930 | |
9b7292ce | 931 | safe_inet_addr("255.255.255.255", &no_addr); |
62e76326 | 932 | |
9b7292ce | 933 | squid_srandom(time(NULL)); |
4d64d74a | 934 | |
9b7292ce | 935 | getCurrentTime(); |
62e76326 | 936 | |
9b7292ce | 937 | squid_start = current_time; |
62e76326 | 938 | |
9b7292ce | 939 | failure_notify = fatal_dump; |
4d64d74a | 940 | |
6c1962dd | 941 | #if USE_WIN32_SERVICE |
942 | ||
9b7292ce | 943 | WIN32_svcstatusupdate(SERVICE_START_PENDING, 10000); |
6c1962dd | 944 | |
945 | #endif | |
946 | ||
9b7292ce | 947 | mainParseOptions(argc, argv); |
4d64d74a | 948 | |
6c1962dd | 949 | #if USE_WIN32_SERVICE |
950 | ||
9b7292ce | 951 | if (opt_install_service) { |
952 | WIN32_InstallService(); | |
953 | return; | |
954 | } | |
6c1962dd | 955 | |
9b7292ce | 956 | if (opt_remove_service) { |
957 | WIN32_RemoveService(); | |
958 | return; | |
959 | } | |
6c1962dd | 960 | |
9b7292ce | 961 | if (opt_command_line) { |
962 | WIN32_SetServiceCommandLine(); | |
963 | return; | |
964 | } | |
6c1962dd | 965 | |
966 | #endif | |
967 | ||
9b7292ce | 968 | /* parse configuration file |
969 | * note: in "normal" case this used to be called from mainInitialize() */ | |
970 | { | |
971 | int parse_err; | |
62e76326 | 972 | |
9b7292ce | 973 | if (!ConfigFile) |
974 | ConfigFile = xstrdup(DefaultConfigFile); | |
62e76326 | 975 | |
9b7292ce | 976 | assert(!configured_once); |
62e76326 | 977 | |
5d620373 | 978 | #if USE_LEAKFINDER |
62e76326 | 979 | |
9b7292ce | 980 | leakInit(); |
62e76326 | 981 | |
5d620373 | 982 | #endif |
8a6218c6 | 983 | |
9b7292ce | 984 | Mem::Init(); |
62e76326 | 985 | |
9b7292ce | 986 | cbdataInit(); |
62e76326 | 987 | |
9b7292ce | 988 | eventInit(); /* eventInit() is required for config parsing */ |
62e76326 | 989 | |
9b7292ce | 990 | storeFsInit(); /* required for config parsing */ |
62e76326 | 991 | |
b9ae18aa | 992 | /* May not be needed for parsing, have not audited for such */ |
993 | DiskIOModule::SetupAllModules(); | |
994 | ||
59b2d47f | 995 | /* Shouldn't be needed for config parsing, but have not audited for such */ |
996 | StoreFileSystem::SetupAllFs(); | |
997 | ||
c8f4eac4 | 998 | /* we may want the parsing process to set this up in the future */ |
999 | Store::Root(new StoreController); | |
1000 | ||
9b7292ce | 1001 | parse_err = parseConfigFile(ConfigFile); |
62e76326 | 1002 | |
9b7292ce | 1003 | if (opt_parse_cfg_only) |
6c1962dd | 1004 | #if USE_WIN32_SERVICE |
1005 | ||
9b7292ce | 1006 | return; |
6c1962dd | 1007 | |
1008 | #else | |
1009 | ||
9b7292ce | 1010 | return parse_err; |
6c1962dd | 1011 | |
1012 | #endif | |
1013 | ||
9b7292ce | 1014 | } |
1015 | if (-1 == opt_send_signal) | |
1016 | if (checkRunningPid()) | |
1017 | exit(1); | |
e13ee7ad | 1018 | |
9bc73deb | 1019 | #if TEST_ACCESS |
62e76326 | 1020 | |
9b7292ce | 1021 | comm_init(); |
62e76326 | 1022 | |
9b7292ce | 1023 | comm_select_init(); |
62e76326 | 1024 | |
9b7292ce | 1025 | mainInitialize(); |
62e76326 | 1026 | |
9b7292ce | 1027 | test_access(); |
62e76326 | 1028 | |
9b7292ce | 1029 | return 0; |
62e76326 | 1030 | |
9bc73deb | 1031 | #endif |
1032 | ||
9b7292ce | 1033 | /* send signal to running copy and exit */ |
1034 | if (opt_send_signal != -1) { | |
1035 | /* chroot if configured to run inside chroot */ | |
62e76326 | 1036 | |
9b7292ce | 1037 | if (Config.chroot_dir && chroot(Config.chroot_dir)) { |
1038 | fatal("failed to chroot"); | |
1039 | } | |
62e76326 | 1040 | |
9b7292ce | 1041 | sendSignal(); |
1042 | /* NOTREACHED */ | |
1043 | } | |
62e76326 | 1044 | |
9b7292ce | 1045 | if (opt_create_swap_dirs) { |
1046 | /* chroot if configured to run inside chroot */ | |
0e657244 | 1047 | |
9b7292ce | 1048 | if (Config.chroot_dir && chroot(Config.chroot_dir)) { |
1049 | fatal("failed to chroot"); | |
1050 | } | |
62e76326 | 1051 | |
9b7292ce | 1052 | setEffectiveUser(); |
1053 | debug(0, 0) ("Creating Swap Directories\n"); | |
c8f4eac4 | 1054 | Store::Root().create(); |
6c1962dd | 1055 | #if USE_WIN32_SERVICE |
1056 | ||
9b7292ce | 1057 | return; |
6c1962dd | 1058 | #else |
1059 | ||
9b7292ce | 1060 | return 0; |
6c1962dd | 1061 | #endif |
1062 | ||
9b7292ce | 1063 | } |
62e76326 | 1064 | |
9b7292ce | 1065 | if (!opt_no_daemon) |
1066 | watch_child(argv); | |
62e76326 | 1067 | |
9b7292ce | 1068 | setMaxFD(); |
4d64d74a | 1069 | |
9b7292ce | 1070 | /* init comm module */ |
1071 | comm_init(); | |
62e76326 | 1072 | |
9b7292ce | 1073 | comm_select_init(); |
4d64d74a | 1074 | |
9b7292ce | 1075 | if (opt_no_daemon) { |
1076 | /* we have to init fdstat here. */ | |
1077 | fd_open(0, FD_LOG, "stdin"); | |
1078 | fd_open(1, FD_LOG, "stdout"); | |
1079 | fd_open(2, FD_LOG, "stderr"); | |
1080 | } | |
62e76326 | 1081 | |
6c1962dd | 1082 | #if USE_WIN32_SERVICE |
1083 | ||
9b7292ce | 1084 | WIN32_svcstatusupdate(SERVICE_START_PENDING, 10000); |
6c1962dd | 1085 | |
1086 | #endif | |
1087 | ||
9b7292ce | 1088 | mainInitialize(); |
4d64d74a | 1089 | |
6c1962dd | 1090 | #if USE_WIN32_SERVICE |
1091 | ||
9b7292ce | 1092 | WIN32_svcstatusupdate(SERVICE_RUNNING, 0); |
6c1962dd | 1093 | |
1094 | #endif | |
1095 | ||
9b7292ce | 1096 | /* main loop */ |
62e76326 | 1097 | |
9b7292ce | 1098 | for (;;) { |
1099 | if (do_reconfigure) { | |
1100 | mainReconfigure(); | |
1101 | do_reconfigure = 0; | |
68aa4272 | 1102 | #if defined(_SQUID_MSWIN_) && defined(_DEBUG) |
1103 | ||
1fa994ac | 1104 | } else if (do_debug_trap) { |
1105 | do_debug_trap = 0; | |
68aa4272 | 1106 | __asm int 3; |
1107 | #endif | |
1108 | ||
9b7292ce | 1109 | } else if (do_rotate) { |
1110 | mainRotate(); | |
1111 | do_rotate = 0; | |
1112 | } else if (do_shutdown) { | |
1113 | time_t wait = do_shutdown > 0 ? (int) Config.shutdownLifetime : 0; | |
1114 | debug(1, 1) ("Preparing for shutdown after %d requests\n", | |
1115 | statCounter.client_http.requests); | |
1116 | debug(1, 1) ("Waiting %d seconds for active connections to finish\n", | |
1117 | (int) wait); | |
1118 | do_shutdown = 0; | |
1119 | shutting_down = 1; | |
6c1962dd | 1120 | #if USE_WIN32_SERVICE |
1121 | ||
9b7292ce | 1122 | WIN32_svcstatusupdate(SERVICE_STOP_PENDING, (wait + 1) * 1000); |
6c1962dd | 1123 | #endif |
1124 | ||
9b7292ce | 1125 | serverConnectionsClose(); |
9b7292ce | 1126 | eventAdd("SquidShutdown", SquidShutdown, NULL, (double) (wait + 1), 1); |
1127 | } | |
62e76326 | 1128 | |
9b7292ce | 1129 | eventRun(); |
1130 | int loop_delay = eventNextTime(); | |
62e76326 | 1131 | |
9b7292ce | 1132 | if (loop_delay < 0) |
1133 | loop_delay = 0; | |
62e76326 | 1134 | |
9b7292ce | 1135 | /* Attempt any pending storedir IO */ |
c8f4eac4 | 1136 | Store::Root().callback(); |
62e76326 | 1137 | |
615f9581 | 1138 | comm_calliocallback(); |
1139 | ||
1140 | /* and again to deal with indirectly queued events | |
c2e8186f | 1141 | * resulting from the first call. These are usually |
1142 | * callbacks and should be dealt with immediately. | |
1143 | */ | |
d85ff21a | 1144 | if (comm_iocallbackpending()) |
c2e8186f | 1145 | comm_calliocallback(); |
1146 | ||
9b7292ce | 1147 | switch (comm_select(loop_delay)) { |
62e76326 | 1148 | |
9b7292ce | 1149 | case COMM_OK: |
1150 | errcount = 0; /* reset if successful */ | |
1151 | break; | |
62e76326 | 1152 | |
9b7292ce | 1153 | case COMM_ERROR: |
1154 | errcount++; | |
1155 | debug(1, 0) ("Select loop Error. Retry %d\n", errcount); | |
62e76326 | 1156 | |
9b7292ce | 1157 | if (errcount == 10) |
1158 | fatal_dump("Select Loop failed!"); | |
62e76326 | 1159 | |
9b7292ce | 1160 | break; |
62e76326 | 1161 | |
9b7292ce | 1162 | case COMM_TIMEOUT: |
1163 | break; | |
62e76326 | 1164 | |
9b7292ce | 1165 | case COMM_SHUTDOWN: |
1166 | SquidShutdown(NULL); | |
62e76326 | 1167 | |
9b7292ce | 1168 | break; |
62e76326 | 1169 | |
9b7292ce | 1170 | default: |
1171 | fatal_dump("MAIN: Internal error -- this should never happen."); | |
62e76326 | 1172 | |
9b7292ce | 1173 | break; |
1174 | } | |
090089c4 | 1175 | } |
62e76326 | 1176 | |
9b7292ce | 1177 | /* NOTREACHED */ |
6c1962dd | 1178 | #if USE_WIN32_SERVICE |
9b7292ce | 1179 | return; |
6c1962dd | 1180 | |
1181 | #else | |
1182 | ||
9b7292ce | 1183 | return 0; |
6c1962dd | 1184 | |
1185 | #endif | |
090089c4 | 1186 | } |
7690e8eb | 1187 | |
b8d8561b | 1188 | static void |
0673c0ba | 1189 | sendSignal(void) |
7690e8eb | 1190 | { |
ff8d0ea6 | 1191 | pid_t pid; |
fedac7e5 | 1192 | debug_log = stderr; |
258ac4d7 | 1193 | |
1194 | if (strcmp(Config.pidFilename, "none") == 0) { | |
1195 | debug(0, 1) ("No pid_filename specified. Trusting you know what you are doing.\n"); | |
1196 | } | |
1197 | ||
fedac7e5 | 1198 | pid = readPidFile(); |
62e76326 | 1199 | |
fedac7e5 | 1200 | if (pid > 1) { |
6c1962dd | 1201 | #if USE_WIN32_SERVICE |
1202 | ||
1203 | if (opt_signal_service) { | |
1204 | WIN32_sendSignal(opt_send_signal); | |
1205 | exit(0); | |
1206 | } else | |
1207 | #ifdef _SQUID_MSWIN_ | |
1208 | { | |
1209 | fprintf(stderr, "%s: ERROR: Could not send ", appname); | |
1210 | fprintf(stderr, "signal to Squid Service:\n"); | |
1211 | fprintf(stderr, "missing -n command line switch.\n"); | |
1212 | exit(1); | |
1213 | } | |
1214 | ||
1215 | /* NOTREACHED */ | |
1216 | #endif | |
1217 | ||
1218 | #endif | |
1219 | ||
62e76326 | 1220 | if (kill(pid, opt_send_signal) && |
1221 | /* ignore permissions if just running check */ | |
1222 | !(opt_send_signal == 0 && errno == EPERM)) { | |
1223 | fprintf(stderr, "%s: ERROR: Could not send ", appname); | |
1224 | fprintf(stderr, "signal %d to process %d: %s\n", | |
1225 | opt_send_signal, (int) pid, xstrerror()); | |
1226 | exit(1); | |
1227 | } | |
fedac7e5 | 1228 | } else { |
62e76326 | 1229 | fprintf(stderr, "%s: ERROR: No running copy\n", appname); |
1230 | exit(1); | |
7690e8eb | 1231 | } |
62e76326 | 1232 | |
fedac7e5 | 1233 | /* signal successfully sent */ |
1234 | exit(0); | |
1235 | } | |
f95b8144 | 1236 | |
a50bfe93 | 1237 | #ifndef _SQUID_MSWIN_ |
e18d7fdc | 1238 | /* |
1239 | * This function is run when Squid is in daemon mode, just | |
1240 | * before the parent forks and starts up the child process. | |
1241 | * It can be used for admin-specific tasks, such as notifying | |
1242 | * someone that Squid is (re)started. | |
1243 | */ | |
1244 | static void | |
1245 | mainStartScript(const char *prog) | |
1246 | { | |
1247 | char script[SQUID_MAXPATHLEN]; | |
1248 | char *t; | |
1249 | size_t sl = 0; | |
1250 | pid_t cpid; | |
1251 | pid_t rpid; | |
1252 | xstrncpy(script, prog, MAXPATHLEN); | |
62e76326 | 1253 | |
e18d7fdc | 1254 | if ((t = strrchr(script, '/'))) { |
62e76326 | 1255 | *(++t) = '\0'; |
1256 | sl = strlen(script); | |
e18d7fdc | 1257 | } |
62e76326 | 1258 | |
e18d7fdc | 1259 | xstrncpy(&script[sl], squid_start_script, MAXPATHLEN - sl); |
62e76326 | 1260 | |
e18d7fdc | 1261 | if ((cpid = fork()) == 0) { |
62e76326 | 1262 | /* child */ |
482aa790 | 1263 | execl(script, squid_start_script, NULL); |
1264 | _exit(-1); | |
e18d7fdc | 1265 | } else { |
62e76326 | 1266 | do { |
e18d7fdc | 1267 | #ifdef _SQUID_NEXT_ |
62e76326 | 1268 | union wait status; |
1269 | rpid = wait3(&status, 0, NULL); | |
e18d7fdc | 1270 | #else |
62e76326 | 1271 | |
1272 | int status; | |
1273 | rpid = waitpid(-1, &status, 0); | |
e18d7fdc | 1274 | #endif |
62e76326 | 1275 | |
1276 | } while (rpid != cpid); | |
e18d7fdc | 1277 | } |
1278 | } | |
1279 | ||
a50bfe93 | 1280 | #endif /* _SQUID_MSWIN_ */ |
1281 | ||
efd900cb | 1282 | static int |
1283 | checkRunningPid(void) | |
1284 | { | |
1285 | pid_t pid; | |
e0077312 | 1286 | |
1287 | if (!debug_log) | |
1288 | debug_log = stderr; | |
1289 | ||
efd900cb | 1290 | pid = readPidFile(); |
62e76326 | 1291 | |
efd900cb | 1292 | if (pid < 2) |
62e76326 | 1293 | return 0; |
1294 | ||
efd900cb | 1295 | if (kill(pid, 0) < 0) |
62e76326 | 1296 | return 0; |
1297 | ||
cb7a4fcb | 1298 | debugs(0, 0, "Squid is already running! Process ID " << pid); |
62e76326 | 1299 | |
efd900cb | 1300 | return 1; |
1301 | } | |
1302 | ||
f95b8144 | 1303 | static void |
bbe199dc | 1304 | watch_child(char *argv[]) |
f95b8144 | 1305 | { |
a50bfe93 | 1306 | #ifndef _SQUID_MSWIN_ |
f95b8144 | 1307 | char *prog; |
f95b8144 | 1308 | int failcount = 0; |
1309 | time_t start; | |
1310 | time_t stop; | |
1311 | #ifdef _SQUID_NEXT_ | |
62e76326 | 1312 | |
f95b8144 | 1313 | union wait status; |
1314 | #else | |
62e76326 | 1315 | |
f95b8144 | 1316 | int status; |
1317 | #endif | |
62e76326 | 1318 | |
e3a3b845 | 1319 | pid_t pid; |
c99c5397 | 1320 | #ifdef TIOCNOTTY |
1321 | ||
54f742e7 | 1322 | int i; |
c99c5397 | 1323 | #endif |
1324 | ||
742724a4 | 1325 | int nullfd; |
62e76326 | 1326 | |
f95b8144 | 1327 | if (*(argv[0]) == '(') |
62e76326 | 1328 | return; |
1329 | ||
54f742e7 | 1330 | openlog(appname, LOG_PID | LOG_NDELAY | LOG_CONS, LOG_LOCAL4); |
62e76326 | 1331 | |
54f742e7 | 1332 | if ((pid = fork()) < 0) |
62e76326 | 1333 | syslog(LOG_ALERT, "fork failed: %s", xstrerror()); |
54f742e7 | 1334 | else if (pid > 0) |
62e76326 | 1335 | exit(0); |
1336 | ||
54f742e7 | 1337 | if (setsid() < 0) |
62e76326 | 1338 | syslog(LOG_ALERT, "setsid failed: %s", xstrerror()); |
1339 | ||
efd900cb | 1340 | closelog(); |
62e76326 | 1341 | |
54f742e7 | 1342 | #ifdef TIOCNOTTY |
62e76326 | 1343 | |
c4aefe96 | 1344 | if ((i = open("/dev/tty", O_RDWR | O_TEXT)) >= 0) { |
62e76326 | 1345 | ioctl(i, TIOCNOTTY, NULL); |
1346 | close(i); | |
54f742e7 | 1347 | } |
62e76326 | 1348 | |
54f742e7 | 1349 | #endif |
b05490a8 | 1350 | |
1351 | ||
7f6ffd15 | 1352 | /* |
1353 | * RBCOLLINS - if cygwin stackdumps when squid is run without | |
1354 | * -N, check the cygwin1.dll version, it needs to be AT LEAST | |
1355 | * 1.1.3. execvp had a bit overflow error in a loop.. | |
1356 | */ | |
742724a4 | 1357 | /* Connect stdio to /dev/null in daemon mode */ |
c4aefe96 | 1358 | nullfd = open("/dev/null", O_RDWR | O_TEXT); |
62e76326 | 1359 | |
e4a1325e | 1360 | if (nullfd < 0) |
1361 | fatalf("/dev/null: %s\n", xstrerror()); | |
1362 | ||
742724a4 | 1363 | dup2(nullfd, 0); |
62e76326 | 1364 | |
742724a4 | 1365 | if (opt_debug_stderr < 0) { |
62e76326 | 1366 | dup2(nullfd, 1); |
1367 | dup2(nullfd, 2); | |
742724a4 | 1368 | } |
62e76326 | 1369 | |
f95b8144 | 1370 | for (;;) { |
62e76326 | 1371 | mainStartScript(argv[0]); |
1372 | ||
1373 | if ((pid = fork()) == 0) { | |
1374 | /* child */ | |
1375 | openlog(appname, LOG_PID | LOG_NDELAY | LOG_CONS, LOG_LOCAL4); | |
1376 | prog = xstrdup(argv[0]); | |
1377 | argv[0] = xstrdup("(squid)"); | |
1378 | execvp(prog, argv); | |
1379 | syslog(LOG_ALERT, "execvp failed: %s", xstrerror()); | |
1380 | } | |
1381 | ||
1382 | /* parent */ | |
1383 | openlog(appname, LOG_PID | LOG_NDELAY | LOG_CONS, LOG_LOCAL4); | |
1384 | ||
1385 | syslog(LOG_NOTICE, "Squid Parent: child process %d started", pid); | |
1386 | ||
1387 | time(&start); | |
1388 | ||
1389 | squid_signal(SIGINT, SIG_IGN, SA_RESTART); | |
1390 | ||
f95b8144 | 1391 | #ifdef _SQUID_NEXT_ |
62e76326 | 1392 | |
1393 | pid = wait3(&status, 0, NULL); | |
1394 | ||
f95b8144 | 1395 | #else |
62e76326 | 1396 | |
1397 | pid = waitpid(-1, &status, 0); | |
1398 | ||
1399 | #endif | |
1400 | ||
1401 | time(&stop); | |
1402 | ||
1403 | if (WIFEXITED(status)) { | |
1404 | syslog(LOG_NOTICE, | |
1405 | "Squid Parent: child process %d exited with status %d", | |
1406 | pid, WEXITSTATUS(status)); | |
1407 | } else if (WIFSIGNALED(status)) { | |
1408 | syslog(LOG_NOTICE, | |
1409 | "Squid Parent: child process %d exited due to signal %d", | |
1410 | pid, WTERMSIG(status)); | |
1411 | } else { | |
1412 | syslog(LOG_NOTICE, "Squid Parent: child process %d exited", pid); | |
1413 | } | |
1414 | ||
1415 | if (stop - start < 10) | |
1416 | failcount++; | |
1417 | else | |
1418 | failcount = 0; | |
1419 | ||
1420 | if (failcount == 5) { | |
1421 | syslog(LOG_ALERT, "Exiting due to repeated, frequent failures"); | |
1422 | exit(1); | |
1423 | } | |
1424 | ||
1425 | if (WIFEXITED(status)) | |
1426 | if (WEXITSTATUS(status) == 0) | |
1427 | exit(0); | |
1428 | ||
1429 | if (WIFSIGNALED(status)) { | |
1430 | switch (WTERMSIG(status)) { | |
1431 | ||
1432 | case SIGKILL: | |
1433 | exit(0); | |
1434 | break; | |
1435 | ||
1436 | default: | |
1437 | break; | |
1438 | } | |
1439 | } | |
1440 | ||
1441 | squid_signal(SIGINT, SIG_DFL, SA_RESTART); | |
1442 | sleep(3); | |
f95b8144 | 1443 | } |
62e76326 | 1444 | |
bbe199dc | 1445 | /* NOTREACHED */ |
a50bfe93 | 1446 | #endif /* _SQUID_MSWIN_ */ |
f95b8144 | 1447 | } |
fff6ad65 | 1448 | |
9ec1a1dc | 1449 | static void |
d723bf6b | 1450 | SquidShutdown(void *unused) |
fff6ad65 | 1451 | { |
6c1962dd | 1452 | #if USE_WIN32_SERVICE |
1453 | WIN32_svcstatusupdate(SERVICE_STOP_PENDING, 10000); | |
1454 | #endif | |
1455 | ||
fff6ad65 | 1456 | debug(1, 1) ("Shutting down...\n"); |
95a83c22 | 1457 | #if USE_DNSSERVERS |
1458 | ||
1459 | dnsShutdown(); | |
1460 | #else | |
1461 | ||
1462 | idnsShutdown(); | |
1463 | #endif | |
1464 | ||
1465 | redirectShutdown(); | |
1466 | externalAclShutdown(); | |
d723bf6b | 1467 | icpConnectionClose(); |
1468 | #if USE_HTCP | |
62e76326 | 1469 | |
d723bf6b | 1470 | htcpSocketClose(); |
1471 | #endif | |
1472 | #ifdef SQUID_SNMP | |
62e76326 | 1473 | |
d723bf6b | 1474 | snmpConnectionClose(); |
320e9f36 | 1475 | #endif |
eb824054 | 1476 | #if USE_WCCP |
62e76326 | 1477 | |
320e9f36 | 1478 | wccpConnectionClose(); |
d723bf6b | 1479 | #endif |
62e76326 | 1480 | |
fff6ad65 | 1481 | releaseServerSockets(); |
d723bf6b | 1482 | commCloseAllSockets(); |
515ec4dc | 1483 | #if DELAY_POOLS |
62e76326 | 1484 | |
b67e2c8c | 1485 | DelayPools::FreePools(); |
515ec4dc | 1486 | #endif |
62e76326 | 1487 | |
5dae8514 | 1488 | authenticateShutdown(); |
a3d0a19d | 1489 | #if USE_UNLINKD |
62e76326 | 1490 | |
fff6ad65 | 1491 | unlinkdClose(); |
a3d0a19d | 1492 | #endif |
6c1962dd | 1493 | #if USE_WIN32_SERVICE |
1494 | ||
1495 | WIN32_svcstatusupdate(SERVICE_STOP_PENDING, 10000); | |
1496 | #endif | |
62e76326 | 1497 | |
c8f4eac4 | 1498 | Store::Root().sync(); /* Flush pending object writes/unlinks */ |
fff6ad65 | 1499 | storeDirWriteCleanLogs(0); |
1500 | PrintRusage(); | |
1501 | dumpMallocStats(); | |
c8f4eac4 | 1502 | Store::Root().sync(); /* Flush log writes */ |
fff6ad65 | 1503 | storeLogClose(); |
1504 | accessLogClose(); | |
5b824235 | 1505 | useragentLogClose(); |
c9b99797 | 1506 | refererCloseLog(); |
225644d7 | 1507 | #if WIP_FWD_LOG |
62e76326 | 1508 | |
225644d7 | 1509 | fwdUninit(); |
1510 | #endif | |
62e76326 | 1511 | |
c8f4eac4 | 1512 | Store::Root().sync(); /* Flush log close */ |
59b2d47f | 1513 | StoreFileSystem::FreeAllFs(); |
b9ae18aa | 1514 | DiskIOModule::FreeAllModules(); |
33ab18e8 | 1515 | #if PURIFY || XMALLOC_TRACE |
62e76326 | 1516 | |
fff6ad65 | 1517 | configFreeMemory(); |
1518 | storeFreeMemory(); | |
33ab18e8 | 1519 | /*stmemFreeMemory(); */ |
fff6ad65 | 1520 | netdbFreeMemory(); |
1521 | ipcacheFreeMemory(); | |
1522 | fqdncacheFreeMemory(); | |
1523 | asnFreeMemory(); | |
26a369ba | 1524 | clientdbFreeMemory(); |
7021844c | 1525 | httpHeaderCleanModule(); |
d2db411c | 1526 | statFreeMemory(); |
f1fc2a8d | 1527 | eventFreeMemory(); |
c68e9c6b | 1528 | mimeFreeMemory(); |
1529 | errorClean(); | |
fff6ad65 | 1530 | #endif |
26a369ba | 1531 | #if !XMALLOC_TRACE |
62e76326 | 1532 | |
54f742e7 | 1533 | if (opt_no_daemon) { |
62e76326 | 1534 | file_close(0); |
1535 | file_close(1); | |
1536 | file_close(2); | |
54f742e7 | 1537 | } |
62e76326 | 1538 | |
33ab18e8 | 1539 | #endif |
fff6ad65 | 1540 | fdDumpOpen(); |
62e76326 | 1541 | |
fff6ad65 | 1542 | fdFreeMemory(); |
62e76326 | 1543 | |
ddb43c58 | 1544 | memClean(); |
62e76326 | 1545 | |
33ab18e8 | 1546 | #if XMALLOC_TRACE |
62e76326 | 1547 | |
26a369ba | 1548 | xmalloc_find_leaks(); |
62e76326 | 1549 | |
26a369ba | 1550 | debug(1, 0) ("Memory used after shutdown: %d\n", xmalloc_total); |
62e76326 | 1551 | |
33ab18e8 | 1552 | #endif |
36a97e19 | 1553 | #if MEM_GEN_TRACE |
62e76326 | 1554 | |
399e85ea | 1555 | log_trace_done(); |
62e76326 | 1556 | |
36a97e19 | 1557 | #endif |
62e76326 | 1558 | |
ab50ee9e | 1559 | if (Config.pidFilename && strcmp(Config.pidFilename, "none") != 0) { |
62e76326 | 1560 | enter_suid(); |
1561 | safeunlink(Config.pidFilename, 0); | |
1562 | leave_suid(); | |
ab50ee9e | 1563 | } |
62e76326 | 1564 | |
a60f7062 | 1565 | debug(1, 1) ("Squid Cache (Version %s): Exiting normally.\n", |
62e76326 | 1566 | version_string); |
1567 | ||
7e3ce7b9 | 1568 | if (debug_log) |
62e76326 | 1569 | fclose(debug_log); |
1570 | ||
fff6ad65 | 1571 | exit(0); |
1572 | } |