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30a4f2a8 | 1 | /* |
262a0e14 | 2 | * $Id$ |
30a4f2a8 | 3 | * |
4 | * DEBUG: section 21 Misc Functions | |
5 | * AUTHOR: Harvest Derived | |
6 | * | |
2b6662ba | 7 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 8 | * ---------------------------------------------------------- |
30a4f2a8 | 9 | * |
2b6662ba | 10 | * Squid is the result of efforts by numerous individuals from |
11 | * the Internet community; see the CONTRIBUTORS file for full | |
12 | * details. Many organizations have provided support for Squid's | |
13 | * development; see the SPONSORS file for full details. Squid is | |
14 | * Copyrighted (C) 2001 by the Regents of the University of | |
15 | * California; see the COPYRIGHT file for full details. Squid | |
16 | * incorporates software developed and/or copyrighted by other | |
17 | * sources; see the CREDITS file for full details. | |
30a4f2a8 | 18 | * |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
26ac0430 | 23 | * |
30a4f2a8 | 24 | * This program is distributed in the hope that it will be useful, |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
26ac0430 | 28 | * |
30a4f2a8 | 29 | * You should have received a copy of the GNU General Public License |
30 | * along with this program; if not, write to the Free Software | |
cbdec147 | 31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 32 | * |
019dd986 | 33 | */ |
44a47c6e | 34 | |
35 | #include "squid.h" | |
27bc2077 AJ |
36 | #include "compat/initgroups.h" |
37 | #include "compat/getaddrinfo.h" | |
38 | #include "compat/getnameinfo.h" | |
39 | #include "compat/tempnam.h" | |
528b2c61 | 40 | #include "fde.h" |
96d89ea0 | 41 | #include "ip/Intercept.h" |
425de4c8 | 42 | #include "ip/QosConfig.h" |
0eb49b6d | 43 | #include "MemBuf.h" |
27bc2077 | 44 | #include "ProtoPort.h" |
a98bcbee | 45 | #include "SquidMath.h" |
985c86bc | 46 | #include "SquidTime.h" |
a2c48c98 AR |
47 | #include "ipc/Kids.h" |
48 | #include "ipc/Coordinator.h" | |
27bc2077 AJ |
49 | #include "SwapDir.h" |
50 | #include "wordlist.h" | |
44a47c6e | 51 | |
62ae0622 | 52 | #if HAVE_SYS_PRCTL_H |
53 | #include <sys/prctl.h> | |
54 | #endif | |
55 | ||
090089c4 | 56 | #define DEAD_MSG "\ |
c5c666ab | 57 | The Squid Cache (version %s) died.\n\ |
090089c4 | 58 | \n\ |
c5c666ab | 59 | You've encountered a fatal error in the Squid Cache version %s.\n\ |
090089c4 | 60 | If a core file was created (possibly in the swap directory),\n\ |
b8de7ebe | 61 | please execute 'gdb squid core' or 'dbx squid core', then type 'where',\n\ |
784219b8 | 62 | and report the trace back to squid-bugs@squid-cache.org.\n\ |
090089c4 | 63 | \n\ |
64 | Thanks!\n" | |
65 | ||
f5b8bbc4 | 66 | static void fatal_common(const char *); |
137ee196 | 67 | static void fatalvf(const char *fmt, va_list args); |
f5b8bbc4 | 68 | static void mail_warranty(void); |
63986a85 | 69 | #if MEM_GEN_TRACE |
399e85ea | 70 | extern void log_trace_done(); |
63986a85 | 71 | extern void log_trace_init(char *); |
399e85ea | 72 | #endif |
329ce686 | 73 | static void restoreCapabilities(int keep); |
a2c48c98 | 74 | int DebugSignal = -1; |
24382924 | 75 | |
941a3077 | 76 | #ifdef _SQUID_LINUX_ |
77 | /* Workaround for crappy glic header files */ | |
e6ccf245 | 78 | SQUIDCEXTERN int backtrace(void *, int); |
79 | SQUIDCEXTERN void backtrace_symbols_fd(void *, int, int); | |
80 | SQUIDCEXTERN int setresuid(uid_t, uid_t, uid_t); | |
10da753f FC |
81 | #else /* _SQUID_LINUX_ */ |
82 | /* needed on Opensolaris for backtrace_symbols_fd */ | |
83 | #if HAVE_EXECINFO_H | |
84 | #include <execinfo.h> | |
85 | #endif /* HAVE_EXECINFO_H */ | |
86 | ||
941a3077 | 87 | #endif /* _SQUID_LINUX */ |
88 | ||
4a5a6c62 | 89 | void |
429fdbec | 90 | releaseServerSockets(void) |
91 | { | |
812ed90c | 92 | int i; |
429fdbec | 93 | /* Release the main ports as early as possible */ |
62e76326 | 94 | |
812ed90c | 95 | for (i = 0; i < NHttpSockets; i++) { |
62e76326 | 96 | if (HttpSockets[i] >= 0) |
97 | close(HttpSockets[i]); | |
812ed90c | 98 | } |
62e76326 | 99 | |
429fdbec | 100 | if (theInIcpConnection >= 0) |
62e76326 | 101 | close(theInIcpConnection); |
102 | ||
429fdbec | 103 | if (theOutIcpConnection >= 0 && theOutIcpConnection != theInIcpConnection) |
62e76326 | 104 | close(theOutIcpConnection); |
429fdbec | 105 | } |
106 | ||
b8d8561b | 107 | static char * |
0673c0ba | 108 | dead_msg(void) |
090089c4 | 109 | { |
95d659f0 | 110 | LOCAL_ARRAY(char, msg, 1024); |
56878878 | 111 | snprintf(msg, 1024, DEAD_MSG, version_string, version_string); |
090089c4 | 112 | return msg; |
113 | } | |
114 | ||
24382924 | 115 | static void |
0673c0ba | 116 | mail_warranty(void) |
090089c4 | 117 | { |
019dd986 | 118 | FILE *fp = NULL; |
6e40f263 | 119 | static char command[256]; |
b99a6dec | 120 | #if HAVE_MKSTEMP |
62e76326 | 121 | |
b99a6dec | 122 | char filename[] = "/tmp/squid-XXXXXX"; |
123 | int tfd = mkstemp(filename); | |
62e76326 | 124 | |
b99a6dec | 125 | if (tfd < 0) |
62e76326 | 126 | return; |
127 | ||
b99a6dec | 128 | if ((fp = fdopen(tfd, "w")) == NULL) |
62e76326 | 129 | return; |
130 | ||
b99a6dec | 131 | #else |
62e76326 | 132 | |
b99a6dec | 133 | char *filename; |
62e76326 | 134 | |
7dbca7a4 | 135 | if ((filename = tempnam(NULL, APP_SHORTNAME)) == NULL) |
62e76326 | 136 | return; |
137 | ||
6e40f263 | 138 | if ((fp = fopen(filename, "w")) == NULL) |
62e76326 | 139 | return; |
140 | ||
b99a6dec | 141 | #endif |
62e76326 | 142 | |
abacf776 | 143 | if (Config.EmailFrom) |
144 | fprintf(fp, "From: %s\n", Config.EmailFrom); | |
145 | else | |
7dbca7a4 | 146 | fprintf(fp, "From: %s@%s\n", APP_SHORTNAME, uniqueHostname()); |
62e76326 | 147 | |
edae7bc0 | 148 | fprintf(fp, "To: %s\n", Config.adminEmail); |
62e76326 | 149 | |
6e40f263 | 150 | fprintf(fp, "Subject: %s\n", dead_msg()); |
62e76326 | 151 | |
6e40f263 | 152 | fclose(fp); |
62e76326 | 153 | |
d084bf20 | 154 | snprintf(command, 256, "%s %s < %s", Config.EmailProgram, Config.adminEmail, filename); |
62e76326 | 155 | |
26ac0430 | 156 | if (system(command)) {} /* XXX should avoid system(3) */ |
62e76326 | 157 | |
6e40f263 | 158 | unlink(filename); |
090089c4 | 159 | } |
160 | ||
4a5a6c62 | 161 | void |
43c3424b | 162 | dumpMallocStats(void) |
3f43b19b | 163 | { |
88738790 | 164 | #if HAVE_MSTATS && HAVE_GNUMALLOC_H |
62e76326 | 165 | |
88738790 | 166 | struct mstats ms = mstats(); |
167 | fprintf(debug_log, "\ttotal space in arena: %6d KB\n", | |
62e76326 | 168 | (int) (ms.bytes_total >> 10)); |
88738790 | 169 | fprintf(debug_log, "\tTotal free: %6d KB %d%%\n", |
62e76326 | 170 | (int) (ms.bytes_free >> 10), |
a98bcbee | 171 | Math::intPercent(ms.bytes_free, ms.bytes_total)); |
eb824054 | 172 | #elif HAVE_MALLINFO && HAVE_STRUCT_MALLINFO |
62e76326 | 173 | |
3f43b19b | 174 | struct mallinfo mp; |
30a4f2a8 | 175 | int t; |
62e76326 | 176 | |
3f43b19b | 177 | if (!do_mallinfo) |
62e76326 | 178 | return; |
179 | ||
3f43b19b | 180 | mp = mallinfo(); |
62e76326 | 181 | |
7dbca7a4 | 182 | fprintf(debug_log, "Memory usage for "APP_SHORTNAME" via mallinfo():\n"); |
62e76326 | 183 | |
e4049756 | 184 | fprintf(debug_log, "\ttotal space in arena: %6ld KB\n", |
185 | (long)mp.arena >> 10); | |
62e76326 | 186 | |
e4049756 | 187 | fprintf(debug_log, "\tOrdinary blocks: %6ld KB %6ld blks\n", |
188 | (long)mp.uordblks >> 10, (long)mp.ordblks); | |
62e76326 | 189 | |
e4049756 | 190 | fprintf(debug_log, "\tSmall blocks: %6ld KB %6ld blks\n", |
191 | (long)mp.usmblks >> 10, (long)mp.smblks); | |
62e76326 | 192 | |
e4049756 | 193 | fprintf(debug_log, "\tHolding blocks: %6ld KB %6ld blks\n", |
194 | (long)mp.hblkhd >> 10, (long)mp.hblks); | |
62e76326 | 195 | |
e4049756 | 196 | fprintf(debug_log, "\tFree Small blocks: %6ld KB\n", |
197 | (long)mp.fsmblks >> 10); | |
62e76326 | 198 | |
e4049756 | 199 | fprintf(debug_log, "\tFree Ordinary blocks: %6ld KB\n", |
200 | (long)mp.fordblks >> 10); | |
62e76326 | 201 | |
30a4f2a8 | 202 | t = mp.uordblks + mp.usmblks + mp.hblkhd; |
62e76326 | 203 | |
9e4ad609 | 204 | fprintf(debug_log, "\tTotal in use: %6d KB %d%%\n", |
a98bcbee | 205 | t >> 10, Math::intPercent(t, mp.arena)); |
62e76326 | 206 | |
30a4f2a8 | 207 | t = mp.fsmblks + mp.fordblks; |
62e76326 | 208 | |
9e4ad609 | 209 | fprintf(debug_log, "\tTotal free: %6d KB %d%%\n", |
a98bcbee | 210 | t >> 10, Math::intPercent(t, mp.arena)); |
62e76326 | 211 | |
6a9f6389 | 212 | #if HAVE_STRUCT_MALLINFO_MXFAST |
62e76326 | 213 | |
9e4ad609 | 214 | fprintf(debug_log, "\tmax size of small blocks:\t%d\n", |
62e76326 | 215 | mp.mxfast); |
216 | ||
9e4ad609 | 217 | fprintf(debug_log, "\tnumber of small blocks in a holding block:\t%d\n", |
62e76326 | 218 | mp.nlblks); |
219 | ||
9e4ad609 | 220 | fprintf(debug_log, "\tsmall block rounding factor:\t%d\n", |
62e76326 | 221 | mp.grain); |
222 | ||
9e4ad609 | 223 | fprintf(debug_log, "\tspace (including overhead) allocated in ord. blks:\t%d\n", |
62e76326 | 224 | mp.uordbytes); |
225 | ||
9e4ad609 | 226 | fprintf(debug_log, "\tnumber of ordinary blocks allocated:\t%d\n", |
62e76326 | 227 | mp.allocated); |
228 | ||
9e4ad609 | 229 | fprintf(debug_log, "\tbytes used in maintaining the free tree:\t%d\n", |
62e76326 | 230 | mp.treeoverhead); |
231 | ||
6a9f6389 | 232 | #endif /* HAVE_STRUCT_MALLINFO_MXFAST */ |
3f43b19b | 233 | #endif /* HAVE_MALLINFO */ |
234 | } | |
30a4f2a8 | 235 | |
f2908497 | 236 | void |
62e76326 | 237 | |
f2908497 | 238 | squid_getrusage(struct rusage *r) |
f0f81709 | 239 | { |
62e76326 | 240 | |
8da94b66 | 241 | memset(r, '\0', sizeof(struct rusage)); |
30a4f2a8 | 242 | #if HAVE_GETRUSAGE && defined(RUSAGE_SELF) |
1da023b5 | 243 | #if _SQUID_SOLARIS_ |
cd19f0b6 | 244 | /* Solaris 2.5 has getrusage() permission bug -- Arjan de Vet */ |
245 | enter_suid(); | |
246 | #endif | |
62e76326 | 247 | |
f2908497 | 248 | getrusage(RUSAGE_SELF, r); |
1da023b5 | 249 | #if _SQUID_SOLARIS_ |
62e76326 | 250 | |
cd19f0b6 | 251 | leave_suid(); |
252 | #endif | |
56983a01 | 253 | #endif |
f2908497 | 254 | } |
255 | ||
256 | double | |
62e76326 | 257 | |
f2908497 | 258 | rusage_cputime(struct rusage *r) |
259 | { | |
260 | return (double) r->ru_stime.tv_sec + | |
62e76326 | 261 | (double) r->ru_utime.tv_sec + |
262 | (double) r->ru_stime.tv_usec / 1000000.0 + | |
263 | (double) r->ru_utime.tv_usec / 1000000.0; | |
f2908497 | 264 | } |
265 | ||
ec603b25 | 266 | /* Hack for some HP-UX preprocessors */ |
267 | #ifndef HAVE_GETPAGESIZE | |
268 | #define HAVE_GETPAGESIZE 0 | |
269 | #endif | |
270 | ||
f2908497 | 271 | int |
62e76326 | 272 | |
f2908497 | 273 | rusage_maxrss(struct rusage *r) |
274 | { | |
4fdc3986 | 275 | #if defined(_SQUID_SGI_) && _ABIAPI |
276 | return r->ru_pad[0]; | |
277 | #elif defined(_SQUID_SGI_) | |
62e76326 | 278 | |
f2908497 | 279 | return r->ru_maxrss; |
280 | #elif defined(_SQUID_OSF_) | |
62e76326 | 281 | |
a6e0ad1e | 282 | return r->ru_maxrss; |
283 | #elif defined(_SQUID_AIX_) | |
284 | ||
f2908497 | 285 | return r->ru_maxrss; |
286 | #elif defined(BSD4_4) | |
62e76326 | 287 | |
f2908497 | 288 | return r->ru_maxrss; |
6b8e7481 | 289 | #elif defined(HAVE_GETPAGESIZE) && HAVE_GETPAGESIZE != 0 |
62e76326 | 290 | |
f2908497 | 291 | return (r->ru_maxrss * getpagesize()) >> 10; |
c7a1083d | 292 | #elif defined(PAGESIZE) |
62e76326 | 293 | |
c7a1083d | 294 | return (r->ru_maxrss * PAGESIZE) >> 10; |
8505e57b | 295 | #else |
62e76326 | 296 | |
8505e57b | 297 | return r->ru_maxrss; |
f2908497 | 298 | #endif |
299 | } | |
300 | ||
301 | int | |
62e76326 | 302 | |
f2908497 | 303 | rusage_pagefaults(struct rusage *r) |
304 | { | |
4fdc3986 | 305 | #if defined(_SQUID_SGI_) && _ABIAPI |
306 | return r->ru_pad[5]; | |
307 | #else | |
62e76326 | 308 | |
f2908497 | 309 | return r->ru_majflt; |
4fdc3986 | 310 | #endif |
f2908497 | 311 | } |
312 | ||
313 | ||
4a5a6c62 | 314 | void |
f2908497 | 315 | PrintRusage(void) |
316 | { | |
62e76326 | 317 | |
f2908497 | 318 | struct rusage rusage; |
319 | squid_getrusage(&rusage); | |
2b906e48 | 320 | fprintf(debug_log, "CPU Usage: %.3f seconds = %.3f user + %.3f sys\n", |
62e76326 | 321 | rusage_cputime(&rusage), |
322 | rusage.ru_utime.tv_sec + ((double) rusage.ru_utime.tv_usec / 1000000.0), | |
323 | rusage.ru_stime.tv_sec + ((double) rusage.ru_stime.tv_usec / 1000000.0)); | |
f2908497 | 324 | fprintf(debug_log, "Maximum Resident Size: %d KB\n", |
62e76326 | 325 | rusage_maxrss(&rusage)); |
f2908497 | 326 | fprintf(debug_log, "Page faults with physical i/o: %d\n", |
62e76326 | 327 | rusage_pagefaults(&rusage)); |
f0f81709 | 328 | } |
329 | ||
03d7b07f | 330 | |
b8d8561b | 331 | void |
332 | death(int sig) | |
44a47c6e | 333 | { |
0e08ce4b | 334 | if (sig == SIGSEGV) |
62e76326 | 335 | fprintf(debug_log, "FATAL: Received Segment Violation...dying.\n"); |
0e08ce4b | 336 | else if (sig == SIGBUS) |
62e76326 | 337 | fprintf(debug_log, "FATAL: Received Bus Error...dying.\n"); |
0e08ce4b | 338 | else |
62e76326 | 339 | fprintf(debug_log, "FATAL: Received signal %d...dying.\n", sig); |
0b4639af | 340 | |
0a081cb0 | 341 | #if PRINT_STACK_TRACE |
0b4639af | 342 | #ifdef _SQUID_HPUX_ |
343 | { | |
62e76326 | 344 | extern void U_STACK_TRACE(void); /* link with -lcl */ |
345 | fflush(debug_log); | |
346 | dup2(fileno(debug_log), 2); | |
347 | U_STACK_TRACE(); | |
0b4639af | 348 | } |
62e76326 | 349 | |
0b4639af | 350 | #endif /* _SQUID_HPUX_ */ |
10da753f | 351 | #if defined(_SQUID_SOLARIS_) && HAVE_LIBOPCOM_STACK |
4f07153c | 352 | { /* get ftp://opcom.sun.ca/pub/tars/opcom_stack.tar.gz and */ |
62e76326 | 353 | extern void opcom_stack_trace(void); /* link with -lopcom_stack */ |
354 | fflush(debug_log); | |
355 | dup2(fileno(debug_log), fileno(stdout)); | |
356 | opcom_stack_trace(); | |
357 | fflush(stdout); | |
0b4639af | 358 | } |
62e76326 | 359 | |
10da753f | 360 | #endif /* _SQUID_SOLARIS_and HAVE_LIBOPCOM_STACK */ |
ce3d30fb | 361 | #if HAVE_BACKTRACE_SYMBOLS_FD |
362 | { | |
62e76326 | 363 | static void *(callarray[8192]); |
364 | int n; | |
365 | n = backtrace(callarray, 8192); | |
366 | backtrace_symbols_fd(callarray, n, fileno(debug_log)); | |
ce3d30fb | 367 | } |
62e76326 | 368 | |
ce3d30fb | 369 | #endif |
0b4639af | 370 | #endif /* PRINT_STACK_TRACE */ |
371 | ||
06648839 | 372 | #if SA_RESETHAND == 0 && !defined(_SQUID_MSWIN_) |
44a47c6e | 373 | signal(SIGSEGV, SIG_DFL); |
62e76326 | 374 | |
44a47c6e | 375 | signal(SIGBUS, SIG_DFL); |
62e76326 | 376 | |
0e08ce4b | 377 | signal(sig, SIG_DFL); |
62e76326 | 378 | |
30a4f2a8 | 379 | #endif |
62e76326 | 380 | |
429fdbec | 381 | releaseServerSockets(); |
62e76326 | 382 | |
e3ef2b09 | 383 | storeDirWriteCleanLogs(0); |
62e76326 | 384 | |
4b0f5de8 | 385 | if (!shutting_down) { |
386 | PrintRusage(); | |
62e76326 | 387 | |
4b0f5de8 | 388 | dumpMallocStats(); |
389 | } | |
62e76326 | 390 | |
6e40f263 | 391 | if (squid_curtime - SQUID_RELEASE_TIME < 864000) { |
62e76326 | 392 | /* skip if more than 10 days old */ |
393 | ||
394 | if (Config.adminEmail) | |
395 | mail_warranty(); | |
329ce686 | 396 | |
397 | puts(dead_msg()); | |
6e40f263 | 398 | } |
62e76326 | 399 | |
776ff02c | 400 | if (shutting_down) |
329ce686 | 401 | exit(1); |
776ff02c | 402 | |
44a47c6e | 403 | abort(); |
404 | } | |
405 | ||
a2c48c98 AR |
406 | void |
407 | BroadcastSignalIfAny(int& sig) | |
408 | { | |
409 | if (sig > 0) { | |
7de94c8c AR |
410 | if (IamCoordinatorProcess()) |
411 | Ipc::Coordinator::Instance()->broadcastSignal(sig); | |
a2c48c98 AR |
412 | sig = -1; |
413 | } | |
414 | } | |
44a47c6e | 415 | |
b8d8561b | 416 | void |
23d92c64 | 417 | sigusr2_handle(int sig) |
090089c4 | 418 | { |
30a4f2a8 | 419 | static int state = 0; |
96e03dd8 | 420 | /* no debugs() here; bad things happen if the signal is delivered during _db_print() */ |
62e76326 | 421 | |
a2c48c98 AR |
422 | DebugSignal = sig; |
423 | ||
30a4f2a8 | 424 | if (state == 0) { |
32d002cb | 425 | #if !MEM_GEN_TRACE |
d7298d24 | 426 | Debug::parseOptions("ALL,7"); |
2bf05976 | 427 | #else |
62e76326 | 428 | |
429 | log_trace_done(); | |
63986a85 | 430 | #endif |
62e76326 | 431 | |
432 | state = 1; | |
30a4f2a8 | 433 | } else { |
32d002cb | 434 | #if !MEM_GEN_TRACE |
62493678 | 435 | Debug::parseOptions(Debug::debugOptions); |
2bf05976 | 436 | #else |
62e76326 | 437 | |
438 | log_trace_init("/tmp/squid.alloc"); | |
63986a85 | 439 | #endif |
62e76326 | 440 | |
441 | state = 0; | |
30a4f2a8 | 442 | } |
62e76326 | 443 | |
30a4f2a8 | 444 | #if !HAVE_SIGACTION |
e504b0a7 | 445 | if (signal(sig, sigusr2_handle) == SIG_ERR) /* reinstall */ |
29827b3e | 446 | debugs(50, 0, "signal: sig=" << sig << " func=sigusr2_handle: " << xstrerror()); |
62e76326 | 447 | |
090089c4 | 448 | #endif |
449 | } | |
450 | ||
24382924 | 451 | static void |
0ee4272b | 452 | fatal_common(const char *message) |
090089c4 | 453 | { |
db40ae20 | 454 | #if HAVE_SYSLOG |
6b8e7481 | 455 | syslog(LOG_ALERT, "%s", message); |
db40ae20 | 456 | #endif |
62e76326 | 457 | |
9bc73deb | 458 | fprintf(debug_log, "FATAL: %s\n", message); |
62e76326 | 459 | |
62493678 | 460 | if (Debug::log_stderr > 0 && debug_log != stderr) |
62e76326 | 461 | fprintf(stderr, "FATAL: %s\n", message); |
462 | ||
c5c666ab | 463 | fprintf(debug_log, "Squid Cache (Version %s): Terminated abnormally.\n", |
62e76326 | 464 | version_string); |
465 | ||
2c47cf74 | 466 | fflush(debug_log); |
62e76326 | 467 | |
9e4ad609 | 468 | PrintRusage(); |
62e76326 | 469 | |
9e4ad609 | 470 | dumpMallocStats(); |
090089c4 | 471 | } |
472 | ||
473 | /* fatal */ | |
b8d8561b | 474 | void |
0ee4272b | 475 | fatal(const char *message) |
090089c4 | 476 | { |
634243ef AJ |
477 | /* suppress secondary errors from the dying */ |
478 | shutting_down = 1; | |
479 | ||
429fdbec | 480 | releaseServerSockets(); |
b2c141d4 | 481 | /* check for store_dirs_rebuilding because fatal() is often |
d399be0e | 482 | * used in early initialization phases, long before we ever |
483 | * get to the store log. */ | |
62e76326 | 484 | |
bef81ea5 | 485 | /* XXX: this should be turned into a callback-on-fatal, or |
486 | * a mandatory-shutdown-event or something like that. | |
487 | * - RBC 20060819 | |
488 | */ | |
489 | ||
975b5060 | 490 | /* |
491 | * DPW 2007-07-06 | |
492 | * Call leave_suid() here to make sure that swap.state files | |
493 | * are written as the effective user, rather than root. Squid | |
494 | * may take on root privs during reconfigure. If squid.conf | |
495 | * contains a "Bungled" line, fatal() will be called when the | |
496 | * process still has root privs. | |
497 | */ | |
7e0f82f2 | 498 | leave_suid(); |
975b5060 | 499 | |
bef81ea5 | 500 | if (0 == StoreController::store_dirs_rebuilding) |
62e76326 | 501 | storeDirWriteCleanLogs(0); |
502 | ||
090089c4 | 503 | fatal_common(message); |
62e76326 | 504 | |
776ff02c | 505 | exit(1); |
090089c4 | 506 | } |
507 | ||
137ee196 | 508 | /* printf-style interface for fatal */ |
137ee196 | 509 | void |
510 | fatalf(const char *fmt,...) | |
511 | { | |
512 | va_list args; | |
513 | va_start(args, fmt); | |
137ee196 | 514 | fatalvf(fmt, args); |
515 | va_end(args); | |
516 | } | |
517 | ||
518 | ||
519 | /* used by fatalf */ | |
520 | static void | |
af6a12ee AJ |
521 | fatalvf(const char *fmt, va_list args) |
522 | { | |
137ee196 | 523 | static char fatal_str[BUFSIZ]; |
524 | vsnprintf(fatal_str, sizeof(fatal_str), fmt, args); | |
525 | fatal(fatal_str); | |
526 | } | |
527 | ||
090089c4 | 528 | /* fatal with dumping core */ |
b8d8561b | 529 | void |
af6a12ee AJ |
530 | fatal_dump(const char *message) |
531 | { | |
7e3ce7b9 | 532 | failure_notify = NULL; |
429fdbec | 533 | releaseServerSockets(); |
62e76326 | 534 | |
090089c4 | 535 | if (message) |
62e76326 | 536 | fatal_common(message); |
537 | ||
776ff02c | 538 | /* |
539 | * Call leave_suid() here to make sure that swap.state files | |
540 | * are written as the effective user, rather than root. Squid | |
541 | * may take on root privs during reconfigure. If squid.conf | |
542 | * contains a "Bungled" line, fatal() will be called when the | |
543 | * process still has root privs. | |
544 | */ | |
545 | leave_suid(); | |
546 | ||
4a69c163 | 547 | if (opt_catch_signals) |
62e76326 | 548 | storeDirWriteCleanLogs(0); |
549 | ||
090089c4 | 550 | abort(); |
551 | } | |
552 | ||
b8d8561b | 553 | void |
af6a12ee AJ |
554 | debug_trap(const char *message) |
555 | { | |
4a69c163 | 556 | if (!opt_catch_signals) |
62e76326 | 557 | fatal_dump(message); |
558 | ||
a3d5953d | 559 | _db_print("WARNING: %s\n", message); |
85b701ed | 560 | } |
561 | ||
b8d8561b | 562 | void |
af6a12ee AJ |
563 | sig_child(int sig) |
564 | { | |
a50bfe93 | 565 | #ifndef _SQUID_MSWIN_ |
30a4f2a8 | 566 | #ifdef _SQUID_NEXT_ |
567 | union wait status; | |
568 | #else | |
62e76326 | 569 | |
090089c4 | 570 | int status; |
090089c4 | 571 | #endif |
62e76326 | 572 | |
ff8d0ea6 | 573 | pid_t pid; |
090089c4 | 574 | |
30a4f2a8 | 575 | do { |
576 | #ifdef _SQUID_NEXT_ | |
62e76326 | 577 | pid = wait3(&status, WNOHANG, NULL); |
090089c4 | 578 | #else |
62e76326 | 579 | |
580 | pid = waitpid(-1, &status, WNOHANG); | |
090089c4 | 581 | #endif |
96e03dd8 | 582 | /* no debugs() here; bad things happen if the signal is delivered during _db_print() */ |
30a4f2a8 | 583 | #if HAVE_SIGACTION |
62e76326 | 584 | |
30a4f2a8 | 585 | } while (pid > 0); |
62e76326 | 586 | |
234967c9 | 587 | #else |
62e76326 | 588 | |
589 | } | |
590 | ||
3d0ac046 | 591 | while (pid > 0 || (pid < 0 && errno == EINTR)); |
30a4f2a8 | 592 | signal(sig, sig_child); |
62e76326 | 593 | |
a50bfe93 | 594 | #endif |
234967c9 | 595 | #endif |
30a4f2a8 | 596 | } |
44a47c6e | 597 | |
0ee4272b | 598 | const char * |
0673c0ba | 599 | getMyHostname(void) |
44a47c6e | 600 | { |
95d659f0 | 601 | LOCAL_ARRAY(char, host, SQUIDHOSTNAMELEN + 1); |
44a47c6e | 602 | static int present = 0; |
cc192b50 | 603 | struct addrinfo *AI = NULL; |
b7ac5457 | 604 | Ip::Address sa; |
62e76326 | 605 | |
af85f811 | 606 | if (Config.visibleHostname != NULL) |
62e76326 | 607 | return Config.visibleHostname; |
608 | ||
d20b1cd0 | 609 | if (present) |
62e76326 | 610 | return host; |
611 | ||
d20b1cd0 | 612 | host[0] = '\0'; |
62e76326 | 613 | |
cc192b50 | 614 | if (Config.Sockaddr.http && sa.IsAnyAddr()) |
615 | sa = Config.Sockaddr.http->s; | |
62e76326 | 616 | |
aa2b5399 | 617 | #if USE_SSL |
62e76326 | 618 | |
cc192b50 | 619 | if (Config.Sockaddr.https && sa.IsAnyAddr()) |
620 | sa = Config.Sockaddr.https->http.s; | |
62e76326 | 621 | |
aa2b5399 | 622 | #endif |
cc192b50 | 623 | |
aa2b5399 | 624 | /* |
625 | * If the first http_port address has a specific address, try a | |
626 | * reverse DNS lookup on it. | |
627 | */ | |
26ac0430 | 628 | if ( !sa.IsAnyAddr() ) { |
62e76326 | 629 | |
cc192b50 | 630 | sa.GetAddrInfo(AI); |
631 | /* we are looking for a name. */ | |
27bc2077 | 632 | if (getnameinfo(AI->ai_addr, AI->ai_addrlen, host, SQUIDHOSTNAMELEN, NULL, 0, NI_NAMEREQD ) == 0) { |
62e76326 | 633 | /* DNS lookup successful */ |
634 | /* use the official name from DNS lookup */ | |
cc192b50 | 635 | debugs(50, 4, "getMyHostname: resolved " << sa << " to '" << host << "'"); |
bf8fe701 | 636 | |
62e76326 | 637 | present = 1; |
638 | ||
cc192b50 | 639 | sa.FreeAddrInfo(AI); |
640 | ||
62e76326 | 641 | if (strchr(host, '.')) |
642 | return host; | |
62e76326 | 643 | } |
644 | ||
cc192b50 | 645 | sa.FreeAddrInfo(AI); |
c19d1320 AJ |
646 | debugs(50, 2, "WARNING: failed to resolve " << sa << " to a fully qualified hostname"); |
647 | } | |
648 | ||
649 | // still no host. fallback to gethostname() | |
650 | if (gethostname(host, SQUIDHOSTNAMELEN) < 0) { | |
651 | debugs(50, DBG_IMPORTANT, "WARNING: gethostname failed: " << xstrerror()); | |
26ac0430 | 652 | } else { |
c19d1320 AJ |
653 | /* Verify that the hostname given resolves properly */ |
654 | struct addrinfo hints; | |
655 | memset(&hints, 0, sizeof(addrinfo)); | |
656 | hints.ai_flags = AI_CANONNAME; | |
62e76326 | 657 | |
c19d1320 AJ |
658 | if (getaddrinfo(host, NULL, NULL, &AI) == 0) { |
659 | /* DNS lookup successful */ | |
660 | /* use the official name from DNS lookup */ | |
661 | debugs(50, 6, "getMyHostname: '" << host << "' has DNS resolution."); | |
662 | present = 1; | |
663 | ||
664 | /* AYJ: do we want to flag AI_ALL and cache the result anywhere. ie as our local host IPs? */ | |
665 | if (AI) { | |
666 | freeaddrinfo(AI); | |
667 | AI = NULL; | |
cc192b50 | 668 | } |
669 | ||
c19d1320 | 670 | return host; |
cc192b50 | 671 | } |
c19d1320 AJ |
672 | |
673 | if (AI) freeaddrinfo(AI); | |
674 | debugs(50, DBG_IMPORTANT, "WARNING: '" << host << "' rDNS test failed: " << xstrerror()); | |
44a47c6e | 675 | } |
62e76326 | 676 | |
c19d1320 AJ |
677 | /* throw a configuration error when the Host/IP given has bad DNS/rDNS. */ |
678 | debugs(50, DBG_CRITICAL, "WARNING: Could not determine this machines public hostname. " << | |
679 | "Please configure one or set 'visible_hostname'."); | |
a572d8be | 680 | |
c19d1320 | 681 | return ("localhost"); |
44a47c6e | 682 | } |
683 | ||
98829f69 | 684 | const char * |
685 | uniqueHostname(void) | |
686 | { | |
23c6ebc4 | 687 | debugs(21, 3, HERE << " Config: '" << Config.uniqueHostname << "'"); |
98829f69 | 688 | return Config.uniqueHostname ? Config.uniqueHostname : getMyHostname(); |
689 | } | |
690 | ||
23c6ebc4 | 691 | /** leave a priviliged section. (Give up any privilegies) |
30a4f2a8 | 692 | * Routines that need privilegies can rap themselves in enter_suid() |
693 | * and leave_suid() | |
694 | * To give upp all posibilites to gain privilegies use no_suid() | |
12b9e9b1 | 695 | */ |
b8d8561b | 696 | void |
0673c0ba | 697 | leave_suid(void) |
12b9e9b1 | 698 | { |
36584579 | 699 | debugs(21, 3, "leave_suid: PID " << getpid() << " called"); |
62e76326 | 700 | |
e3d74828 | 701 | if (Config.effectiveGroup) { |
702 | ||
703 | #if HAVE_SETGROUPS | |
704 | ||
705 | setgroups(1, &Config2.effectiveGroupID); | |
706 | ||
707 | #endif | |
708 | ||
709 | if (setgid(Config2.effectiveGroupID) < 0) | |
bf8fe701 | 710 | debugs(50, 0, "ALERT: setgid: " << xstrerror()); |
e3d74828 | 711 | |
712 | } | |
713 | ||
12b9e9b1 | 714 | if (geteuid() != 0) |
62e76326 | 715 | return; |
716 | ||
12b9e9b1 | 717 | /* Started as a root, check suid option */ |
b6f794d6 | 718 | if (Config.effectiveUser == NULL) |
62e76326 | 719 | return; |
720 | ||
36584579 | 721 | debugs(21, 3, "leave_suid: PID " << getpid() << " giving up root, becoming '" << Config.effectiveUser << "'"); |
62e76326 | 722 | |
e3d74828 | 723 | if (!Config.effectiveGroup) { |
62e76326 | 724 | |
e3d74828 | 725 | if (setgid(Config2.effectiveGroupID) < 0) |
bf8fe701 | 726 | debugs(50, 0, "ALERT: setgid: " << xstrerror()); |
62e76326 | 727 | |
e3d74828 | 728 | if (initgroups(Config.effectiveUser, Config2.effectiveGroupID) < 0) { |
bf8fe701 | 729 | debugs(50, 0, "ALERT: initgroups: unable to set groups for User " << |
730 | Config.effectiveUser << " and Group " << | |
731 | (unsigned) Config2.effectiveGroupID << ""); | |
e3d74828 | 732 | } |
733 | } | |
62e76326 | 734 | |
234967c9 | 735 | #if HAVE_SETRESUID |
62e76326 | 736 | |
d20b1cd0 | 737 | if (setresuid(Config2.effectiveUserID, Config2.effectiveUserID, 0) < 0) |
bf8fe701 | 738 | debugs(50, 0, "ALERT: setresuid: " << xstrerror()); |
62e76326 | 739 | |
234967c9 | 740 | #elif HAVE_SETEUID |
62e76326 | 741 | |
d20b1cd0 | 742 | if (seteuid(Config2.effectiveUserID) < 0) |
bf8fe701 | 743 | debugs(50, 0, "ALERT: seteuid: " << xstrerror()); |
62e76326 | 744 | |
234967c9 | 745 | #else |
62e76326 | 746 | |
d20b1cd0 | 747 | if (setuid(Config2.effectiveUserID) < 0) |
bf8fe701 | 748 | debugs(50, 0, "ALERT: setuid: " << xstrerror()); |
62e76326 | 749 | |
fc68f6b1 | 750 | #endif |
fc68f6b1 | 751 | |
329ce686 | 752 | restoreCapabilities(1); |
fc68f6b1 | 753 | |
62ae0622 | 754 | #if HAVE_PRCTL && defined(PR_SET_DUMPABLE) |
755 | /* Set Linux DUMPABLE flag */ | |
756 | if (Config.coredump_dir && prctl(PR_SET_DUMPABLE, 1) != 0) | |
bf8fe701 | 757 | debugs(50, 2, "ALERT: prctl: " << xstrerror()); |
62ae0622 | 758 | |
234967c9 | 759 | #endif |
760 | } | |
761 | ||
30a4f2a8 | 762 | /* Enter a privilegied section */ |
b8d8561b | 763 | void |
0673c0ba | 764 | enter_suid(void) |
234967c9 | 765 | { |
36584579 | 766 | debugs(21, 3, "enter_suid: PID " << getpid() << " taking root priveleges"); |
234967c9 | 767 | #if HAVE_SETRESUID |
62e76326 | 768 | |
e6ccf245 | 769 | setresuid((uid_t)-1, 0, (uid_t)-1); |
234967c9 | 770 | #else |
62e76326 | 771 | |
234967c9 | 772 | setuid(0); |
773 | #endif | |
62ae0622 | 774 | #if HAVE_PRCTL && defined(PR_SET_DUMPABLE) |
775 | /* Set Linux DUMPABLE flag */ | |
776 | ||
777 | if (Config.coredump_dir && prctl(PR_SET_DUMPABLE, 1) != 0) | |
bf8fe701 | 778 | debugs(50, 2, "ALERT: prctl: " << xstrerror()); |
62ae0622 | 779 | |
780 | #endif | |
234967c9 | 781 | } |
782 | ||
30a4f2a8 | 783 | /* Give up the posibility to gain privilegies. |
784 | * this should be used before starting a sub process | |
785 | */ | |
b8d8561b | 786 | void |
0673c0ba | 787 | no_suid(void) |
234967c9 | 788 | { |
789 | uid_t uid; | |
30a4f2a8 | 790 | leave_suid(); |
234967c9 | 791 | uid = geteuid(); |
329ce686 | 792 | debugs(21, 3, "no_suid: PID " << getpid() << " giving up root priveleges forever"); |
62e76326 | 793 | |
234967c9 | 794 | setuid(0); |
62e76326 | 795 | |
429fdbec | 796 | if (setuid(uid) < 0) |
bf8fe701 | 797 | debugs(50, 1, "no_suid: setuid: " << xstrerror()); |
62e76326 | 798 | |
329ce686 | 799 | restoreCapabilities(0); |
800 | ||
62ae0622 | 801 | #if HAVE_PRCTL && defined(PR_SET_DUMPABLE) |
802 | /* Set Linux DUMPABLE flag */ | |
803 | if (Config.coredump_dir && prctl(PR_SET_DUMPABLE, 1) != 0) | |
bf8fe701 | 804 | debugs(50, 2, "ALERT: prctl: " << xstrerror()); |
62ae0622 | 805 | |
234967c9 | 806 | #endif |
12b9e9b1 | 807 | } |
ccff9601 | 808 | |
a2c48c98 | 809 | bool |
7de94c8c | 810 | IamMasterProcess() |
a2c48c98 | 811 | { |
7de94c8c AR |
812 | return KidIdentifier == 0; |
813 | } | |
814 | ||
815 | bool | |
816 | IamWorkerProcess() | |
817 | { | |
818 | // when there is only one process, it has to be the worker | |
13aeac35 | 819 | if (opt_no_daemon || Config.workers == 0) |
7de94c8c AR |
820 | return true; |
821 | ||
13aeac35 | 822 | return 0 < KidIdentifier && KidIdentifier <= Config.workers; |
7de94c8c AR |
823 | } |
824 | ||
96c2bb61 AR |
825 | bool |
826 | InDaemonMode() | |
827 | { | |
828 | return !opt_no_daemon && Config.workers > 0; | |
829 | } | |
830 | ||
7de94c8c AR |
831 | bool |
832 | UsingSmp() | |
833 | { | |
13aeac35 | 834 | return !opt_no_daemon && Config.workers > 1; |
7de94c8c AR |
835 | } |
836 | ||
837 | bool | |
838 | IamCoordinatorProcess() | |
839 | { | |
13aeac35 | 840 | return UsingSmp() && KidIdentifier == Config.workers + 1; |
7de94c8c AR |
841 | } |
842 | ||
843 | bool | |
844 | IamPrimaryProcess() | |
845 | { | |
846 | // when there is only one process, it has to be primary | |
13aeac35 | 847 | if (opt_no_daemon || Config.workers == 0) |
7de94c8c AR |
848 | return true; |
849 | ||
850 | // when there is a master and worker process, the master delegates | |
851 | // primary functions to its only kid | |
13aeac35 | 852 | if (Config.workers == 1) |
7de94c8c | 853 | return IamWorkerProcess(); |
a2c48c98 | 854 | |
7de94c8c AR |
855 | // in SMP mode, multiple kids delegate primary functions to the coordinator |
856 | return IamCoordinatorProcess(); | |
a2c48c98 AR |
857 | } |
858 | ||
96c2bb61 AR |
859 | int |
860 | NumberOfKids() | |
861 | { | |
862 | // no kids in no-daemon mode | |
863 | if (!InDaemonMode()) | |
864 | return 0; | |
865 | ||
866 | // workers + the coordinator process | |
867 | if (UsingSmp()) | |
868 | return Config.workers + 1; | |
869 | ||
870 | return Config.workers; | |
871 | } | |
872 | ||
b8d8561b | 873 | void |
0673c0ba | 874 | writePidFile(void) |
ccff9601 | 875 | { |
9e4ad609 | 876 | int fd; |
0b4639af | 877 | const char *f = NULL; |
973e9fe1 | 878 | mode_t old_umask; |
9e4ad609 | 879 | char buf[32]; |
62e76326 | 880 | |
7de94c8c | 881 | if (!IamPrimaryProcess()) |
a2c48c98 AR |
882 | return; |
883 | ||
9e4ad609 | 884 | if ((f = Config.pidFilename) == NULL) |
62e76326 | 885 | return; |
886 | ||
9e4ad609 | 887 | if (!strcmp(Config.pidFilename, "none")) |
62e76326 | 888 | return; |
889 | ||
30a4f2a8 | 890 | enter_suid(); |
62e76326 | 891 | |
973e9fe1 | 892 | old_umask = umask(022); |
62e76326 | 893 | |
c4aefe96 | 894 | fd = file_open(f, O_WRONLY | O_CREAT | O_TRUNC | O_TEXT); |
62e76326 | 895 | |
973e9fe1 | 896 | umask(old_umask); |
62e76326 | 897 | |
30a4f2a8 | 898 | leave_suid(); |
62e76326 | 899 | |
9e4ad609 | 900 | if (fd < 0) { |
bf8fe701 | 901 | debugs(50, 0, "" << f << ": " << xstrerror()); |
62e76326 | 902 | debug_trap("Could not write pid file"); |
903 | return; | |
ccff9601 | 904 | } |
62e76326 | 905 | |
56878878 | 906 | snprintf(buf, 32, "%d\n", (int) getpid()); |
1f7c9178 | 907 | FD_WRITE_METHOD(fd, buf, strlen(buf)); |
9e4ad609 | 908 | file_close(fd); |
ccff9601 | 909 | } |
c4fb974e | 910 | |
911 | ||
ff8d0ea6 | 912 | pid_t |
0673c0ba | 913 | readPidFile(void) |
7690e8eb | 914 | { |
915 | FILE *pid_fp = NULL; | |
9e4ad609 | 916 | const char *f = Config.pidFilename; |
1ee742a2 | 917 | char *chroot_f = NULL; |
ff8d0ea6 | 918 | pid_t pid = -1; |
919 | int i; | |
7690e8eb | 920 | |
9e4ad609 | 921 | if (f == NULL || !strcmp(Config.pidFilename, "none")) { |
7dbca7a4 | 922 | fprintf(stderr, APP_SHORTNAME ": ERROR: No pid file name defined\n"); |
62e76326 | 923 | exit(1); |
7690e8eb | 924 | } |
62e76326 | 925 | |
1ee742a2 | 926 | if (Config.chroot_dir && geteuid() == 0) { |
927 | int len = strlen(Config.chroot_dir) + 1 + strlen(f) + 1; | |
928 | chroot_f = (char *)xmalloc(strlen(Config.chroot_dir) + 1 + strlen(f) + 1); | |
929 | snprintf(chroot_f, len, "%s/%s", Config.chroot_dir, f); | |
930 | f = chroot_f; | |
931 | } | |
932 | ||
7690e8eb | 933 | pid_fp = fopen(f, "r"); |
62e76326 | 934 | |
7690e8eb | 935 | if (pid_fp != NULL) { |
62e76326 | 936 | pid = 0; |
937 | ||
938 | if (fscanf(pid_fp, "%d", &i) == 1) | |
939 | pid = (pid_t) i; | |
940 | ||
941 | fclose(pid_fp); | |
7690e8eb | 942 | } else { |
62e76326 | 943 | if (errno != ENOENT) { |
7dbca7a4 | 944 | fprintf(stderr, APP_SHORTNAME ": ERROR: Could not read pid file\n"); |
62e76326 | 945 | fprintf(stderr, "\t%s: %s\n", f, xstrerror()); |
946 | exit(1); | |
947 | } | |
7690e8eb | 948 | } |
62e76326 | 949 | |
1ee742a2 | 950 | safe_free(chroot_f); |
7690e8eb | 951 | return pid; |
952 | } | |
953 | ||
f3f0f563 AJ |
954 | /* A little piece of glue for odd systems */ |
955 | #ifndef RLIMIT_NOFILE | |
956 | #ifdef RLIMIT_OFILE | |
957 | #define RLIMIT_NOFILE RLIMIT_OFILE | |
958 | #endif | |
959 | #endif | |
7690e8eb | 960 | |
f3f0f563 | 961 | /** Figure out the number of supported filedescriptors */ |
b8d8561b | 962 | void |
0673c0ba | 963 | setMaxFD(void) |
c4fb974e | 964 | { |
f3f0f563 | 965 | #if HAVE_SETRLIMIT && defined(RLIMIT_NOFILE) |
c4fb974e | 966 | struct rlimit rl; |
c4fb974e | 967 | if (getrlimit(RLIMIT_NOFILE, &rl) < 0) { |
f3f0f563 AJ |
968 | debugs(50, DBG_CRITICAL, "setrlimit: RLIMIT_NOFILE: " << xstrerror()); |
969 | } else if (Config.max_filedescriptors > 0) { | |
0979b3a6 AJ |
970 | #if USE_SELECT || USE_SELECT_WIN32 |
971 | /* select() breaks if this gets set too big */ | |
972 | if (Config.max_filedescriptors > FD_SETSIZE) | |
973 | rl.rlim_cur = FD_SETSIZE; | |
974 | else | |
975 | #endif | |
976 | rl.rlim_cur = Config.max_filedescriptors; | |
62e76326 | 977 | if (rl.rlim_cur > rl.rlim_max) |
f3f0f563 AJ |
978 | rl.rlim_max = rl.rlim_cur; |
979 | if (setrlimit(RLIMIT_NOFILE, &rl)) { | |
980 | debugs(50, DBG_CRITICAL, "setrlimit: RLIMIT_NOFILE: " << xstrerror()); | |
981 | getrlimit(RLIMIT_NOFILE, &rl); | |
982 | rl.rlim_cur = rl.rlim_max; | |
983 | if (setrlimit(RLIMIT_NOFILE, &rl)) { | |
984 | debugs(50, DBG_CRITICAL, "setrlimit: RLIMIT_NOFILE: " << xstrerror()); | |
985 | } | |
62e76326 | 986 | } |
c4fb974e | 987 | } |
f3f0f563 | 988 | if (getrlimit(RLIMIT_NOFILE, &rl) < 0) { |
632d8053 | 989 | debugs(50, DBG_CRITICAL, "setrlimit: RLIMIT_NOFILE: " << xstrerror()); |
c4fb974e | 990 | } else { |
f3f0f563 AJ |
991 | Squid_MaxFD = rl.rlim_cur; |
992 | } | |
62e76326 | 993 | |
f3f0f563 AJ |
994 | #endif /* HAVE_SETRLIMIT */ |
995 | } | |
62e76326 | 996 | |
f3f0f563 AJ |
997 | void |
998 | setSystemLimits(void) | |
999 | { | |
1000 | #if HAVE_SETRLIMIT && defined(RLIMIT_NOFILE) && !defined(_SQUID_CYGWIN_) | |
1001 | /* limit system filedescriptors to our own limit */ | |
1002 | struct rlimit rl; | |
1003 | if (getrlimit(RLIMIT_NOFILE, &rl) < 0) { | |
1004 | debugs(50, DBG_CRITICAL, "setrlimit: RLIMIT_NOFILE: " << xstrerror()); | |
1005 | } else { | |
1006 | rl.rlim_cur = Squid_MaxFD; | |
1007 | if (setrlimit(RLIMIT_NOFILE, &rl) < 0) { | |
1008 | snprintf(tmp_error_buf, ERROR_BUF_SZ, "setrlimit: RLIMIT_NOFILE: %s", xstrerror()); | |
62e76326 | 1009 | fatal_dump(tmp_error_buf); |
1010 | } | |
c4fb974e | 1011 | } |
30a4f2a8 | 1012 | #endif /* HAVE_SETRLIMIT */ |
1013 | ||
1014 | #if HAVE_SETRLIMIT && defined(RLIMIT_DATA) | |
1015 | if (getrlimit(RLIMIT_DATA, &rl) < 0) { | |
f3f0f563 | 1016 | debugs(50, DBG_CRITICAL, "getrlimit: RLIMIT_DATA: " << xstrerror()); |
88738790 | 1017 | } else if (rl.rlim_max > rl.rlim_cur) { |
62e76326 | 1018 | rl.rlim_cur = rl.rlim_max; /* set it to the max */ |
1019 | ||
1020 | if (setrlimit(RLIMIT_DATA, &rl) < 0) { | |
f3f0f563 | 1021 | snprintf(tmp_error_buf, ERROR_BUF_SZ, "setrlimit: RLIMIT_DATA: %s", xstrerror()); |
62e76326 | 1022 | fatal_dump(tmp_error_buf); |
1023 | } | |
30a4f2a8 | 1024 | } |
1025 | #endif /* RLIMIT_DATA */ | |
f3f0f563 AJ |
1026 | if (Config.max_filedescriptors > Squid_MaxFD) { |
1027 | debugs(50, DBG_IMPORTANT, "NOTICE: Could not increase the number of filedescriptors"); | |
1028 | } | |
1029 | ||
ad7ef91a | 1030 | #if HAVE_SETRLIMIT && defined(RLIMIT_VMEM) |
1031 | if (getrlimit(RLIMIT_VMEM, &rl) < 0) { | |
bf8fe701 | 1032 | debugs(50, 0, "getrlimit: RLIMIT_VMEM: " << xstrerror()); |
88738790 | 1033 | } else if (rl.rlim_max > rl.rlim_cur) { |
62e76326 | 1034 | rl.rlim_cur = rl.rlim_max; /* set it to the max */ |
1035 | ||
1036 | if (setrlimit(RLIMIT_VMEM, &rl) < 0) { | |
f3f0f563 | 1037 | snprintf(tmp_error_buf, ERROR_BUF_SZ, "setrlimit: RLIMIT_VMEM: %s", xstrerror()); |
62e76326 | 1038 | fatal_dump(tmp_error_buf); |
1039 | } | |
ad7ef91a | 1040 | } |
1041 | #endif /* RLIMIT_VMEM */ | |
c4fb974e | 1042 | } |
3a57089e | 1043 | |
b8d8561b | 1044 | void |
ea3a2a69 | 1045 | squid_signal(int sig, SIGHDLR * func, int flags) |
30a4f2a8 | 1046 | { |
1047 | #if HAVE_SIGACTION | |
62e76326 | 1048 | |
30a4f2a8 | 1049 | struct sigaction sa; |
1050 | sa.sa_handler = func; | |
1051 | sa.sa_flags = flags; | |
1052 | sigemptyset(&sa.sa_mask); | |
62e76326 | 1053 | |
30a4f2a8 | 1054 | if (sigaction(sig, &sa, NULL) < 0) |
bf8fe701 | 1055 | debugs(50, 0, "sigaction: sig=" << sig << " func=" << func << ": " << xstrerror()); |
62e76326 | 1056 | |
30a4f2a8 | 1057 | #else |
06648839 | 1058 | #ifdef _SQUID_MSWIN_ |
1059 | /* | |
1060 | On Windows, only SIGINT, SIGILL, SIGFPE, SIGTERM, SIGBREAK, SIGABRT and SIGSEGV signals | |
1061 | are supported, so we must care of don't call signal() for other value. | |
1062 | The SIGILL, SIGSEGV, and SIGTERM signals are not generated under Windows. They are defined | |
1063 | for ANSI compatibility, so both SIGSEGV and SIGBUS are emulated with an Exception Handler. | |
1064 | */ | |
1065 | switch (sig) { | |
1066 | ||
1067 | case SIGINT: | |
1068 | ||
1069 | case SIGILL: | |
1070 | ||
1071 | case SIGFPE: | |
1072 | ||
1073 | case SIGTERM: | |
1074 | ||
1075 | case SIGBREAK: | |
1076 | ||
1077 | case SIGABRT: | |
1078 | break; | |
1079 | ||
1080 | case SIGSEGV: | |
1081 | WIN32_ExceptionHandlerInit(); | |
1082 | break; | |
1083 | ||
1084 | case SIGBUS: | |
1085 | WIN32_ExceptionHandlerInit(); | |
1086 | return; | |
1087 | break; /* Nor reached */ | |
1088 | ||
1089 | default: | |
1090 | return; | |
1091 | break; /* Nor reached */ | |
1092 | } | |
1093 | ||
1094 | #endif | |
62e76326 | 1095 | |
06648839 | 1096 | signal(sig, func); |
62e76326 | 1097 | |
30a4f2a8 | 1098 | #endif |
1099 | } | |
396c5745 | 1100 | |
70364f29 | 1101 | void |
1102 | logsFlush(void) | |
1103 | { | |
1104 | if (debug_log) | |
62e76326 | 1105 | fflush(debug_log); |
70364f29 | 1106 | } |
88738790 | 1107 | |
16300b58 | 1108 | void |
0e473d70 | 1109 | kb_incr(kb_t * k, size_t v) |
a7c05555 | 1110 | { |
0e473d70 | 1111 | k->bytes += v; |
1112 | k->kb += (k->bytes >> 10); | |
1113 | k->bytes &= 0x3FF; | |
a7c05555 | 1114 | } |
c1dabf04 | 1115 | |
a00a7c85 | 1116 | void |
6bbf9cc4 | 1117 | debugObj(int section, int level, const char *label, void *obj, ObjPackMethod pm) |
a00a7c85 | 1118 | { |
1119 | MemBuf mb; | |
1120 | Packer p; | |
6bbf9cc4 | 1121 | assert(label && obj && pm); |
2fe7eff9 | 1122 | mb.init(); |
a00a7c85 | 1123 | packerToMemInit(&p, &mb); |
0cdcddb9 | 1124 | (*pm) (obj, &p); |
bf8fe701 | 1125 | debugs(section, level, "" << label << "" << mb.buf << ""); |
a00a7c85 | 1126 | packerClean(&p); |
2fe7eff9 | 1127 | mb.clean(); |
a00a7c85 | 1128 | } |
d548ee64 | 1129 | |
0e70aa1e | 1130 | void |
1131 | parseEtcHosts(void) | |
1132 | { | |
1133 | FILE *fp; | |
1134 | char buf[1024]; | |
1135 | char buf2[512]; | |
1136 | char *nt = buf; | |
1137 | char *lt = buf; | |
fa2bfbab | 1138 | |
0e70aa1e | 1139 | if (NULL == Config.etcHostsPath) |
62e76326 | 1140 | return; |
1141 | ||
0e70aa1e | 1142 | if (0 == strcmp(Config.etcHostsPath, "none")) |
62e76326 | 1143 | return; |
1144 | ||
0e70aa1e | 1145 | fp = fopen(Config.etcHostsPath, "r"); |
62e76326 | 1146 | |
0e70aa1e | 1147 | if (fp == NULL) { |
bf8fe701 | 1148 | debugs(1, 1, "parseEtcHosts: " << Config.etcHostsPath << ": " << xstrerror()); |
62e76326 | 1149 | return; |
0e70aa1e | 1150 | } |
62e76326 | 1151 | |
ec4daaa5 | 1152 | #ifdef _SQUID_WIN32_ |
c4aefe96 | 1153 | setmode(fileno(fp), O_TEXT); |
62e76326 | 1154 | |
c4aefe96 | 1155 | #endif |
62e76326 | 1156 | |
0e70aa1e | 1157 | while (fgets(buf, 1024, fp)) { /* for each line */ |
62e76326 | 1158 | wordlist *hosts = NULL; |
1159 | char *addr; | |
1160 | ||
c31616ae | 1161 | if (buf[0] == '#') /* MS-windows likes to add comments */ |
1162 | continue; | |
1163 | ||
7a10c315 | 1164 | strtok(buf, "#"); /* chop everything following a comment marker */ |
62e76326 | 1165 | |
1166 | lt = buf; | |
1167 | ||
1168 | addr = buf; | |
1169 | ||
bf8fe701 | 1170 | debugs(1, 5, "etc_hosts: line is '" << buf << "'"); |
62e76326 | 1171 | |
1172 | nt = strpbrk(lt, w_space); | |
1173 | ||
1174 | if (nt == NULL) /* empty line */ | |
1175 | continue; | |
1176 | ||
1177 | *nt = '\0'; /* null-terminate the address */ | |
1178 | ||
bf8fe701 | 1179 | debugs(1, 5, "etc_hosts: address is '" << addr << "'"); |
62e76326 | 1180 | |
1181 | lt = nt + 1; | |
1182 | ||
1183 | while ((nt = strpbrk(lt, w_space))) { | |
1184 | char *host = NULL; | |
1185 | ||
1186 | if (nt == lt) { /* multiple spaces */ | |
bf8fe701 | 1187 | debugs(1, 5, "etc_hosts: multiple spaces, skipping"); |
62e76326 | 1188 | lt = nt + 1; |
1189 | continue; | |
1190 | } | |
1191 | ||
1192 | *nt = '\0'; | |
bf8fe701 | 1193 | debugs(1, 5, "etc_hosts: got hostname '" << lt << "'"); |
62e76326 | 1194 | |
532e5dd4 AJ |
1195 | /* For IPV6 addresses also check for a colon */ |
1196 | if (Config.appendDomain && !strchr(lt, '.') && !strchr(lt, ':')) { | |
62e76326 | 1197 | /* I know it's ugly, but it's only at reconfig */ |
1198 | strncpy(buf2, lt, 512); | |
3fbd26b5 | 1199 | strncat(buf2, Config.appendDomain, 512 - strlen(lt) - 1); |
62e76326 | 1200 | host = buf2; |
1201 | } else { | |
1202 | host = lt; | |
1203 | } | |
1204 | ||
f6a72b33 AJ |
1205 | if (ipcacheAddEntryFromHosts(host, addr) != 0) { |
1206 | /* invalid address, continuing is useless */ | |
1207 | wordlistDestroy(&hosts); | |
1208 | hosts = NULL; | |
1209 | break; | |
1210 | } | |
62e76326 | 1211 | wordlistAdd(&hosts, host); |
1212 | ||
1213 | lt = nt + 1; | |
1214 | } | |
1215 | ||
9e008dda | 1216 | if (hosts) { |
f6a72b33 AJ |
1217 | fqdncacheAddEntryFromHosts(addr, hosts); |
1218 | wordlistDestroy(&hosts); | |
1219 | } | |
0e70aa1e | 1220 | } |
62e76326 | 1221 | |
1f3c7397 | 1222 | fclose (fp); |
0e70aa1e | 1223 | } |
52f772de | 1224 | |
1225 | int | |
1226 | getMyPort(void) | |
1227 | { | |
52f772de | 1228 | if (Config.Sockaddr.http) |
cc192b50 | 1229 | return Config.Sockaddr.http->s.GetPort(); |
62e76326 | 1230 | |
a2727cdb | 1231 | #if USE_SSL |
62e76326 | 1232 | |
a2727cdb | 1233 | if (Config.Sockaddr.https) |
cc192b50 | 1234 | return Config.Sockaddr.https->http.s.GetPort(); |
62e76326 | 1235 | |
52f772de | 1236 | #endif |
62e76326 | 1237 | |
a2727cdb | 1238 | fatal("No port defined"); |
62e76326 | 1239 | |
bac6d4bd | 1240 | return 0; /* NOT REACHED */ |
52f772de | 1241 | } |
d860a1aa | 1242 | |
c642c141 AJ |
1243 | /* |
1244 | * Set the umask to at least the given mask. This is in addition | |
1245 | * to the umask set at startup | |
1246 | */ | |
1247 | void | |
1248 | setUmask(mode_t mask) | |
1249 | { | |
1250 | // No way to get the current umask value without setting it. | |
1251 | static const mode_t orig_umask = umask(mask); // once, to get | |
1252 | umask(mask | orig_umask); // always, to set | |
1253 | } | |
d860a1aa | 1254 | |
1255 | /* | |
1256 | * Inverse of strwordtok. Quotes a word if needed | |
1257 | */ | |
42419a95 | 1258 | void |
d860a1aa | 1259 | strwordquote(MemBuf * mb, const char *str) |
1260 | { | |
1261 | int quoted = 0; | |
62e76326 | 1262 | |
d860a1aa | 1263 | if (strchr(str, ' ')) { |
62e76326 | 1264 | quoted = 1; |
2fe7eff9 | 1265 | mb->append("\"", 1); |
d860a1aa | 1266 | } |
62e76326 | 1267 | |
d860a1aa | 1268 | while (*str) { |
dc1af3cf | 1269 | int l = strcspn(str, "\"\\\n\r"); |
2fe7eff9 | 1270 | mb->append(str, l); |
62e76326 | 1271 | str += l; |
1272 | ||
26ac0430 | 1273 | switch (*str) { |
dc1af3cf | 1274 | |
1275 | case '\n': | |
2fe7eff9 | 1276 | mb->append("\\n", 2); |
dc1af3cf | 1277 | str++; |
1278 | break; | |
1279 | ||
1280 | case '\r': | |
2fe7eff9 | 1281 | mb->append("\\r", 2); |
dc1af3cf | 1282 | str++; |
1283 | break; | |
1284 | ||
1285 | case '\0': | |
1286 | break; | |
1287 | ||
1288 | default: | |
2fe7eff9 | 1289 | mb->append("\\", 1); |
1290 | mb->append(str, 1); | |
62e76326 | 1291 | str++; |
dc1af3cf | 1292 | break; |
62e76326 | 1293 | } |
d860a1aa | 1294 | } |
62e76326 | 1295 | |
d860a1aa | 1296 | if (quoted) |
2fe7eff9 | 1297 | mb->append("\"", 1); |
d860a1aa | 1298 | } |
fc68f6b1 | 1299 | |
1300 | void | |
1301 | keepCapabilities(void) | |
1302 | { | |
b7ac5457 | 1303 | #if USE_LIBCAP && HAVE_PRCTL && defined(PR_SET_KEEPCAPS) |
329ce686 | 1304 | |
1305 | if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0)) { | |
b7ac5457 | 1306 | Ip::Interceptor.StopTransparency("capability setting has failed."); |
fc68f6b1 | 1307 | } |
fc68f6b1 | 1308 | #endif |
1309 | } | |
329ce686 | 1310 | |
1311 | static void | |
1312 | restoreCapabilities(int keep) | |
1313 | { | |
9e008dda | 1314 | /* NP: keep these two if-endif separate. Non-Linux work perfectly well without Linux syscap support. */ |
b64b6030 | 1315 | #if USE_LIBCAP |
c3487a77 HN |
1316 | cap_t caps; |
1317 | if (keep) | |
1318 | caps = cap_get_proc(); | |
1319 | else | |
1320 | caps = cap_init(); | |
1321 | if (!caps) { | |
b7ac5457 | 1322 | Ip::Interceptor.StopTransparency("Can't get current capabilities"); |
9e008dda | 1323 | } else { |
c3487a77 HN |
1324 | int ncaps = 0; |
1325 | int rc = 0; | |
1326 | cap_value_t cap_list[10]; | |
1327 | cap_list[ncaps++] = CAP_NET_BIND_SERVICE; | |
425de4c8 | 1328 | if (Ip::Interceptor.TransparentActive() || Ip::Qos::TheConfig.isHitNfmarkActive() || Ip::Qos::TheConfig.isAclNfmarkActive()) { |
c3487a77 | 1329 | cap_list[ncaps++] = CAP_NET_ADMIN; |
fc32ce2e | 1330 | } |
329ce686 | 1331 | |
c3487a77 HN |
1332 | cap_clear_flag(caps, CAP_EFFECTIVE); |
1333 | rc |= cap_set_flag(caps, CAP_EFFECTIVE, ncaps, cap_list, CAP_SET); | |
1334 | rc |= cap_set_flag(caps, CAP_PERMITTED, ncaps, cap_list, CAP_SET); | |
329ce686 | 1335 | |
c3487a77 | 1336 | if (rc || cap_set_proc(caps) != 0) { |
b7ac5457 | 1337 | Ip::Interceptor.StopTransparency("Error enabling needed capabilities."); |
b5bd96ce | 1338 | } |
c3487a77 | 1339 | cap_free(caps); |
329ce686 | 1340 | } |
b64b6030 | 1341 | #elif defined(_SQUID_LINUX_) |
b7ac5457 | 1342 | Ip::Interceptor.StopTransparency("Missing needed capability support."); |
b5bd96ce | 1343 | #endif /* HAVE_SYS_CAPABILITY_H */ |
329ce686 | 1344 | } |
cc192b50 | 1345 | |
1346 | void * | |
1347 | xmemset(void *dst, int val, size_t sz) | |
1348 | { | |
1349 | // do debugs output | |
1350 | debugs(63, 9, "memset: dst=" << dst << ", val=" << val << ", bytes=" << sz); | |
1351 | ||
1352 | // call the system one to do the actual work ~safely. | |
1353 | return memset(dst, val, sz); | |
1354 | } |