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30a4f2a8 | 1 | /* |
30a4f2a8 | 2 | * DEBUG: section 21 Misc Functions |
3 | * AUTHOR: Harvest Derived | |
4 | * | |
2b6662ba | 5 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 6 | * ---------------------------------------------------------- |
30a4f2a8 | 7 | * |
2b6662ba | 8 | * Squid is the result of efforts by numerous individuals from |
9 | * the Internet community; see the CONTRIBUTORS file for full | |
10 | * details. Many organizations have provided support for Squid's | |
11 | * development; see the SPONSORS file for full details. Squid is | |
12 | * Copyrighted (C) 2001 by the Regents of the University of | |
13 | * California; see the COPYRIGHT file for full details. Squid | |
14 | * incorporates software developed and/or copyrighted by other | |
15 | * sources; see the CREDITS file for full details. | |
30a4f2a8 | 16 | * |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License as published by | |
19 | * the Free Software Foundation; either version 2 of the License, or | |
20 | * (at your option) any later version. | |
26ac0430 | 21 | * |
30a4f2a8 | 22 | * This program is distributed in the hope that it will be useful, |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26ac0430 | 26 | * |
30a4f2a8 | 27 | * You should have received a copy of the GNU General Public License |
28 | * along with this program; if not, write to the Free Software | |
cbdec147 | 29 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 30 | * |
019dd986 | 31 | */ |
44a47c6e | 32 | |
582c2af2 | 33 | #include "squid.h" |
602d9612 | 34 | #include "anyp/PortCfg.h" |
e0d28505 | 35 | #include "base/Subscription.h" |
93da1f99 | 36 | #include "client_side.h" |
438b04d4 | 37 | #include "disk.h" |
528b2c61 | 38 | #include "fde.h" |
95e6d864 | 39 | #include "fqdncache.h" |
65d448bc | 40 | #include "htcp.h" |
e0d28505 | 41 | #include "ICP.h" |
96d89ea0 | 42 | #include "ip/Intercept.h" |
425de4c8 | 43 | #include "ip/QosConfig.h" |
602d9612 A |
44 | #include "ipc/Coordinator.h" |
45 | #include "ipc/Kids.h" | |
46 | #include "ipcache.h" | |
0eb49b6d | 47 | #include "MemBuf.h" |
4d5904f7 | 48 | #include "SquidConfig.h" |
a98bcbee | 49 | #include "SquidMath.h" |
985c86bc | 50 | #include "SquidTime.h" |
27bc2077 | 51 | #include "SwapDir.h" |
602d9612 | 52 | #include "tools.h" |
27bc2077 | 53 | #include "wordlist.h" |
44a47c6e | 54 | |
1a30fdf5 | 55 | #include <cerrno> |
62ae0622 | 56 | #if HAVE_SYS_PRCTL_H |
57 | #include <sys/prctl.h> | |
58 | #endif | |
e30fe60a AJ |
59 | #if HAVE_WIN32_PSAPI |
60 | #include <psapi.h> | |
61 | #endif | |
582c2af2 FC |
62 | #if HAVE_SYS_STAT_H |
63 | #include <sys/stat.h> | |
64 | #endif | |
65 | #if HAVE_SYS_WAIT_H | |
66 | #include <sys/wait.h> | |
67 | #endif | |
68 | #if HAVE_GRP_H | |
69 | #include <grp.h> | |
70 | #endif | |
62ae0622 | 71 | |
090089c4 | 72 | #define DEAD_MSG "\ |
c5c666ab | 73 | The Squid Cache (version %s) died.\n\ |
090089c4 | 74 | \n\ |
c5c666ab | 75 | You've encountered a fatal error in the Squid Cache version %s.\n\ |
090089c4 | 76 | If a core file was created (possibly in the swap directory),\n\ |
b8de7ebe | 77 | please execute 'gdb squid core' or 'dbx squid core', then type 'where',\n\ |
784219b8 | 78 | and report the trace back to squid-bugs@squid-cache.org.\n\ |
090089c4 | 79 | \n\ |
80 | Thanks!\n" | |
81 | ||
f5b8bbc4 | 82 | static void mail_warranty(void); |
329ce686 | 83 | static void restoreCapabilities(int keep); |
a2c48c98 | 84 | int DebugSignal = -1; |
24382924 | 85 | |
1191b93b | 86 | #if _SQUID_LINUX_ |
941a3077 | 87 | /* Workaround for crappy glic header files */ |
e6ccf245 | 88 | SQUIDCEXTERN int backtrace(void *, int); |
89 | SQUIDCEXTERN void backtrace_symbols_fd(void *, int, int); | |
90 | SQUIDCEXTERN int setresuid(uid_t, uid_t, uid_t); | |
10da753f FC |
91 | #else /* _SQUID_LINUX_ */ |
92 | /* needed on Opensolaris for backtrace_symbols_fd */ | |
93 | #if HAVE_EXECINFO_H | |
94 | #include <execinfo.h> | |
95 | #endif /* HAVE_EXECINFO_H */ | |
96 | ||
941a3077 | 97 | #endif /* _SQUID_LINUX */ |
98 | ||
4a5a6c62 | 99 | void |
429fdbec | 100 | releaseServerSockets(void) |
101 | { | |
65d448bc | 102 | // Release the main ports as early as possible |
62e76326 | 103 | |
e0d28505 | 104 | // clear both http_port and https_port lists. |
65d448bc | 105 | clientHttpConnectionsClose(); |
62e76326 | 106 | |
e0d28505 | 107 | // clear icp_port's |
65d448bc | 108 | icpClosePorts(); |
62e76326 | 109 | |
e0d28505 | 110 | // XXX: Why not the HTCP, SNMP, DNS ports as well? |
65d448bc | 111 | // XXX: why does this differ from main closeServerConnections() anyway ? |
429fdbec | 112 | } |
113 | ||
b8d8561b | 114 | static char * |
0673c0ba | 115 | dead_msg(void) |
090089c4 | 116 | { |
95d659f0 | 117 | LOCAL_ARRAY(char, msg, 1024); |
56878878 | 118 | snprintf(msg, 1024, DEAD_MSG, version_string, version_string); |
090089c4 | 119 | return msg; |
120 | } | |
121 | ||
24382924 | 122 | static void |
0673c0ba | 123 | mail_warranty(void) |
090089c4 | 124 | { |
019dd986 | 125 | FILE *fp = NULL; |
6e40f263 | 126 | static char command[256]; |
50536c47 | 127 | |
a2c13db1 AJ |
128 | /* |
129 | * NP: umask() takes the mask of bits we DONT want set. | |
130 | * | |
131 | * We want the current user to have read/write access | |
132 | * and since this file will be passed to mailsystem, | |
133 | * the group and other must have read access. | |
134 | */ | |
135 | const mode_t prev_umask=umask(S_IXUSR|S_IXGRP|S_IWGRP|S_IWOTH|S_IXOTH); | |
62e76326 | 136 | |
50536c47 | 137 | #if HAVE_MKSTEMP |
b99a6dec | 138 | char filename[] = "/tmp/squid-XXXXXX"; |
139 | int tfd = mkstemp(filename); | |
50536c47 FC |
140 | if (tfd < 0 || (fp = fdopen(tfd, "w")) == NULL) { |
141 | umask(prev_umask); | |
62e76326 | 142 | return; |
50536c47 | 143 | } |
b99a6dec | 144 | #else |
145 | char *filename; | |
50536c47 FC |
146 | // XXX tempnam is obsolete since POSIX.2008-1 |
147 | // tmpfile is not an option, we want the created files to stick around | |
148 | if ((filename = tempnam(NULL, APP_SHORTNAME)) == NULL || | |
6a1a5b78 | 149 | (fp = fopen(filename, "w")) == NULL) { |
50536c47 | 150 | umask(prev_umask); |
62e76326 | 151 | return; |
50536c47 | 152 | } |
b99a6dec | 153 | #endif |
50536c47 | 154 | umask(prev_umask); |
62e76326 | 155 | |
abacf776 | 156 | if (Config.EmailFrom) |
157 | fprintf(fp, "From: %s\n", Config.EmailFrom); | |
158 | else | |
7dbca7a4 | 159 | fprintf(fp, "From: %s@%s\n", APP_SHORTNAME, uniqueHostname()); |
62e76326 | 160 | |
edae7bc0 | 161 | fprintf(fp, "To: %s\n", Config.adminEmail); |
6e40f263 | 162 | fprintf(fp, "Subject: %s\n", dead_msg()); |
163 | fclose(fp); | |
62e76326 | 164 | |
d084bf20 | 165 | snprintf(command, 256, "%s %s < %s", Config.EmailProgram, Config.adminEmail, filename); |
26ac0430 | 166 | if (system(command)) {} /* XXX should avoid system(3) */ |
6e40f263 | 167 | unlink(filename); |
87cedd31 AJ |
168 | #if !HAVE_MKSTEMP |
169 | xfree(filename); // tempnam() requires us to free its allocation | |
170 | #endif | |
090089c4 | 171 | } |
172 | ||
4a5a6c62 | 173 | void |
43c3424b | 174 | dumpMallocStats(void) |
3f43b19b | 175 | { |
88738790 | 176 | #if HAVE_MSTATS && HAVE_GNUMALLOC_H |
62e76326 | 177 | |
88738790 | 178 | struct mstats ms = mstats(); |
179 | fprintf(debug_log, "\ttotal space in arena: %6d KB\n", | |
62e76326 | 180 | (int) (ms.bytes_total >> 10)); |
88738790 | 181 | fprintf(debug_log, "\tTotal free: %6d KB %d%%\n", |
62e76326 | 182 | (int) (ms.bytes_free >> 10), |
a98bcbee | 183 | Math::intPercent(ms.bytes_free, ms.bytes_total)); |
4572073a | 184 | #endif |
3f43b19b | 185 | } |
30a4f2a8 | 186 | |
f2908497 | 187 | void |
188 | squid_getrusage(struct rusage *r) | |
f0f81709 | 189 | { |
8da94b66 | 190 | memset(r, '\0', sizeof(struct rusage)); |
e30fe60a | 191 | #if HAVE_GETRUSAGE && defined(RUSAGE_SELF) && !_SQUID_WINDOWS_ |
1da023b5 | 192 | #if _SQUID_SOLARIS_ |
cd19f0b6 | 193 | /* Solaris 2.5 has getrusage() permission bug -- Arjan de Vet */ |
194 | enter_suid(); | |
195 | #endif | |
62e76326 | 196 | |
f2908497 | 197 | getrusage(RUSAGE_SELF, r); |
62e76326 | 198 | |
e30fe60a | 199 | #if _SQUID_SOLARIS_ |
cd19f0b6 | 200 | leave_suid(); |
201 | #endif | |
e30fe60a AJ |
202 | |
203 | #elif _SQUID_WINDOWS_ && HAVE_WIN32_PSAPI | |
204 | // Windows has an alternative method if there is no POSIX getrusage defined. | |
205 | if (WIN32_OS_version >= _WIN_OS_WINNT) { | |
206 | /* On Windows NT and later call PSAPI.DLL for process Memory */ | |
207 | /* informations -- Guido Serassio */ | |
208 | HANDLE hProcess; | |
209 | PROCESS_MEMORY_COUNTERS pmc; | |
210 | hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | | |
211 | PROCESS_VM_READ, | |
212 | FALSE, GetCurrentProcessId()); | |
213 | { | |
214 | /* Microsoft CRT doesn't have getrusage function, */ | |
215 | /* so we get process CPU time information from PSAPI.DLL. */ | |
216 | FILETIME ftCreate, ftExit, ftKernel, ftUser; | |
217 | if (GetProcessTimes(hProcess, &ftCreate, &ftExit, &ftKernel, &ftUser)) { | |
218 | int64_t *ptUser = (int64_t *)&ftUser; | |
219 | int64_t tUser64 = *ptUser / 10; | |
220 | int64_t *ptKernel = (int64_t *)&ftKernel; | |
221 | int64_t tKernel64 = *ptKernel / 10; | |
222 | r->ru_utime.tv_sec =(long)(tUser64 / 1000000); | |
223 | r->ru_stime.tv_sec =(long)(tKernel64 / 1000000); | |
224 | r->ru_utime.tv_usec =(long)(tUser64 % 1000000); | |
225 | r->ru_stime.tv_usec =(long)(tKernel64 % 1000000); | |
226 | } else { | |
227 | CloseHandle( hProcess ); | |
228 | return; | |
229 | } | |
230 | } | |
231 | if (GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc))) { | |
232 | r->ru_maxrss=(DWORD)(pmc.WorkingSetSize / getpagesize()); | |
233 | r->ru_majflt=pmc.PageFaultCount; | |
234 | } else { | |
235 | CloseHandle( hProcess ); | |
236 | return; | |
237 | } | |
238 | ||
239 | CloseHandle( hProcess ); | |
240 | } | |
56983a01 | 241 | #endif |
f2908497 | 242 | } |
243 | ||
244 | double | |
62e76326 | 245 | |
f2908497 | 246 | rusage_cputime(struct rusage *r) |
247 | { | |
248 | return (double) r->ru_stime.tv_sec + | |
62e76326 | 249 | (double) r->ru_utime.tv_sec + |
250 | (double) r->ru_stime.tv_usec / 1000000.0 + | |
251 | (double) r->ru_utime.tv_usec / 1000000.0; | |
f2908497 | 252 | } |
253 | ||
ec603b25 | 254 | /* Hack for some HP-UX preprocessors */ |
255 | #ifndef HAVE_GETPAGESIZE | |
256 | #define HAVE_GETPAGESIZE 0 | |
257 | #endif | |
258 | ||
f2908497 | 259 | int |
62e76326 | 260 | |
f2908497 | 261 | rusage_maxrss(struct rusage *r) |
262 | { | |
8a09e810 | 263 | #if _SQUID_SGI_ && _ABIAPI |
4fdc3986 | 264 | return r->ru_pad[0]; |
8a09e810 | 265 | #elif _SQUID_SGI_|| _SQUID_OSF_ || _SQUID_AIX_ || defined(BSD4_4) |
62e76326 | 266 | |
f2908497 | 267 | return r->ru_maxrss; |
6b8e7481 | 268 | #elif defined(HAVE_GETPAGESIZE) && HAVE_GETPAGESIZE != 0 |
62e76326 | 269 | |
f2908497 | 270 | return (r->ru_maxrss * getpagesize()) >> 10; |
c7a1083d | 271 | #elif defined(PAGESIZE) |
62e76326 | 272 | |
c7a1083d | 273 | return (r->ru_maxrss * PAGESIZE) >> 10; |
8505e57b | 274 | #else |
62e76326 | 275 | |
8505e57b | 276 | return r->ru_maxrss; |
f2908497 | 277 | #endif |
278 | } | |
279 | ||
280 | int | |
62e76326 | 281 | |
f2908497 | 282 | rusage_pagefaults(struct rusage *r) |
283 | { | |
8a09e810 | 284 | #if _SQUID_SGI_ && _ABIAPI |
4fdc3986 | 285 | return r->ru_pad[5]; |
286 | #else | |
62e76326 | 287 | |
f2908497 | 288 | return r->ru_majflt; |
4fdc3986 | 289 | #endif |
f2908497 | 290 | } |
291 | ||
4a5a6c62 | 292 | void |
f2908497 | 293 | PrintRusage(void) |
294 | { | |
62e76326 | 295 | |
f2908497 | 296 | struct rusage rusage; |
297 | squid_getrusage(&rusage); | |
2b906e48 | 298 | fprintf(debug_log, "CPU Usage: %.3f seconds = %.3f user + %.3f sys\n", |
62e76326 | 299 | rusage_cputime(&rusage), |
300 | rusage.ru_utime.tv_sec + ((double) rusage.ru_utime.tv_usec / 1000000.0), | |
301 | rusage.ru_stime.tv_sec + ((double) rusage.ru_stime.tv_usec / 1000000.0)); | |
f2908497 | 302 | fprintf(debug_log, "Maximum Resident Size: %d KB\n", |
62e76326 | 303 | rusage_maxrss(&rusage)); |
f2908497 | 304 | fprintf(debug_log, "Page faults with physical i/o: %d\n", |
62e76326 | 305 | rusage_pagefaults(&rusage)); |
f0f81709 | 306 | } |
307 | ||
b8d8561b | 308 | void |
309 | death(int sig) | |
44a47c6e | 310 | { |
0e08ce4b | 311 | if (sig == SIGSEGV) |
62e76326 | 312 | fprintf(debug_log, "FATAL: Received Segment Violation...dying.\n"); |
0e08ce4b | 313 | else if (sig == SIGBUS) |
62e76326 | 314 | fprintf(debug_log, "FATAL: Received Bus Error...dying.\n"); |
0e08ce4b | 315 | else |
62e76326 | 316 | fprintf(debug_log, "FATAL: Received signal %d...dying.\n", sig); |
0b4639af | 317 | |
0a081cb0 | 318 | #if PRINT_STACK_TRACE |
1191b93b | 319 | #if _SQUID_HPUX_ |
0b4639af | 320 | { |
62e76326 | 321 | extern void U_STACK_TRACE(void); /* link with -lcl */ |
322 | fflush(debug_log); | |
323 | dup2(fileno(debug_log), 2); | |
324 | U_STACK_TRACE(); | |
0b4639af | 325 | } |
62e76326 | 326 | |
0b4639af | 327 | #endif /* _SQUID_HPUX_ */ |
8a09e810 | 328 | #if _SQUID_SOLARIS_ && HAVE_LIBOPCOM_STACK |
4f07153c | 329 | { /* get ftp://opcom.sun.ca/pub/tars/opcom_stack.tar.gz and */ |
62e76326 | 330 | extern void opcom_stack_trace(void); /* link with -lopcom_stack */ |
331 | fflush(debug_log); | |
332 | dup2(fileno(debug_log), fileno(stdout)); | |
333 | opcom_stack_trace(); | |
334 | fflush(stdout); | |
0b4639af | 335 | } |
62e76326 | 336 | |
10da753f | 337 | #endif /* _SQUID_SOLARIS_and HAVE_LIBOPCOM_STACK */ |
ce3d30fb | 338 | #if HAVE_BACKTRACE_SYMBOLS_FD |
339 | { | |
62e76326 | 340 | static void *(callarray[8192]); |
341 | int n; | |
342 | n = backtrace(callarray, 8192); | |
343 | backtrace_symbols_fd(callarray, n, fileno(debug_log)); | |
ce3d30fb | 344 | } |
62e76326 | 345 | |
ce3d30fb | 346 | #endif |
0b4639af | 347 | #endif /* PRINT_STACK_TRACE */ |
348 | ||
7aa9bb3e | 349 | #if SA_RESETHAND == 0 && !_SQUID_WINDOWS_ |
44a47c6e | 350 | signal(SIGSEGV, SIG_DFL); |
62e76326 | 351 | |
44a47c6e | 352 | signal(SIGBUS, SIG_DFL); |
62e76326 | 353 | |
0e08ce4b | 354 | signal(sig, SIG_DFL); |
62e76326 | 355 | |
30a4f2a8 | 356 | #endif |
62e76326 | 357 | |
429fdbec | 358 | releaseServerSockets(); |
62e76326 | 359 | |
e3ef2b09 | 360 | storeDirWriteCleanLogs(0); |
62e76326 | 361 | |
4b0f5de8 | 362 | if (!shutting_down) { |
363 | PrintRusage(); | |
62e76326 | 364 | |
4b0f5de8 | 365 | dumpMallocStats(); |
366 | } | |
62e76326 | 367 | |
6e40f263 | 368 | if (squid_curtime - SQUID_RELEASE_TIME < 864000) { |
62e76326 | 369 | /* skip if more than 10 days old */ |
370 | ||
371 | if (Config.adminEmail) | |
372 | mail_warranty(); | |
329ce686 | 373 | |
374 | puts(dead_msg()); | |
6e40f263 | 375 | } |
62e76326 | 376 | |
44a47c6e | 377 | abort(); |
378 | } | |
379 | ||
a2c48c98 AR |
380 | void |
381 | BroadcastSignalIfAny(int& sig) | |
382 | { | |
383 | if (sig > 0) { | |
7de94c8c AR |
384 | if (IamCoordinatorProcess()) |
385 | Ipc::Coordinator::Instance()->broadcastSignal(sig); | |
a2c48c98 AR |
386 | sig = -1; |
387 | } | |
388 | } | |
44a47c6e | 389 | |
b8d8561b | 390 | void |
23d92c64 | 391 | sigusr2_handle(int sig) |
090089c4 | 392 | { |
30a4f2a8 | 393 | static int state = 0; |
96e03dd8 | 394 | /* no debugs() here; bad things happen if the signal is delivered during _db_print() */ |
62e76326 | 395 | |
a2c48c98 AR |
396 | DebugSignal = sig; |
397 | ||
30a4f2a8 | 398 | if (state == 0) { |
d7298d24 | 399 | Debug::parseOptions("ALL,7"); |
62e76326 | 400 | state = 1; |
30a4f2a8 | 401 | } else { |
62493678 | 402 | Debug::parseOptions(Debug::debugOptions); |
62e76326 | 403 | state = 0; |
30a4f2a8 | 404 | } |
62e76326 | 405 | |
30a4f2a8 | 406 | #if !HAVE_SIGACTION |
e504b0a7 | 407 | if (signal(sig, sigusr2_handle) == SIG_ERR) /* reinstall */ |
fa84c01d | 408 | debugs(50, DBG_CRITICAL, "signal: sig=" << sig << " func=sigusr2_handle: " << xstrerror()); |
62e76326 | 409 | |
090089c4 | 410 | #endif |
411 | } | |
412 | ||
b8d8561b | 413 | void |
af6a12ee AJ |
414 | debug_trap(const char *message) |
415 | { | |
4a69c163 | 416 | if (!opt_catch_signals) |
62e76326 | 417 | fatal_dump(message); |
418 | ||
a3d5953d | 419 | _db_print("WARNING: %s\n", message); |
85b701ed | 420 | } |
421 | ||
b8d8561b | 422 | void |
af6a12ee AJ |
423 | sig_child(int sig) |
424 | { | |
7aa9bb3e | 425 | #if !_SQUID_WINDOWS_ |
1191b93b | 426 | #if _SQUID_NEXT_ |
30a4f2a8 | 427 | union wait status; |
428 | #else | |
62e76326 | 429 | |
090089c4 | 430 | int status; |
090089c4 | 431 | #endif |
62e76326 | 432 | |
ff8d0ea6 | 433 | pid_t pid; |
090089c4 | 434 | |
30a4f2a8 | 435 | do { |
1191b93b | 436 | #if _SQUID_NEXT_ |
62e76326 | 437 | pid = wait3(&status, WNOHANG, NULL); |
090089c4 | 438 | #else |
62e76326 | 439 | |
440 | pid = waitpid(-1, &status, WNOHANG); | |
090089c4 | 441 | #endif |
96e03dd8 | 442 | /* no debugs() here; bad things happen if the signal is delivered during _db_print() */ |
30a4f2a8 | 443 | #if HAVE_SIGACTION |
62e76326 | 444 | |
30a4f2a8 | 445 | } while (pid > 0); |
62e76326 | 446 | |
234967c9 | 447 | #else |
62e76326 | 448 | |
449 | } | |
450 | ||
3d0ac046 | 451 | while (pid > 0 || (pid < 0 && errno == EINTR)); |
30a4f2a8 | 452 | signal(sig, sig_child); |
62e76326 | 453 | |
a50bfe93 | 454 | #endif |
234967c9 | 455 | #endif |
30a4f2a8 | 456 | } |
44a47c6e | 457 | |
ca4b9ee6 DK |
458 | void |
459 | sig_shutdown(int sig) | |
460 | { | |
461 | shutting_down = 1; | |
462 | } | |
463 | ||
0ee4272b | 464 | const char * |
0673c0ba | 465 | getMyHostname(void) |
44a47c6e | 466 | { |
95d659f0 | 467 | LOCAL_ARRAY(char, host, SQUIDHOSTNAMELEN + 1); |
44a47c6e | 468 | static int present = 0; |
cc192b50 | 469 | struct addrinfo *AI = NULL; |
b7ac5457 | 470 | Ip::Address sa; |
62e76326 | 471 | |
af85f811 | 472 | if (Config.visibleHostname != NULL) |
62e76326 | 473 | return Config.visibleHostname; |
474 | ||
d20b1cd0 | 475 | if (present) |
62e76326 | 476 | return host; |
477 | ||
d20b1cd0 | 478 | host[0] = '\0'; |
62e76326 | 479 | |
4dd643d5 | 480 | if (Config.Sockaddr.http && sa.isAnyAddr()) |
cc192b50 | 481 | sa = Config.Sockaddr.http->s; |
62e76326 | 482 | |
cb4f4424 | 483 | #if USE_OPENSSL |
62e76326 | 484 | |
4dd643d5 | 485 | if (Config.Sockaddr.https && sa.isAnyAddr()) |
859741ed | 486 | sa = Config.Sockaddr.https->s; |
62e76326 | 487 | |
aa2b5399 | 488 | #endif |
cc192b50 | 489 | |
aa2b5399 | 490 | /* |
491 | * If the first http_port address has a specific address, try a | |
492 | * reverse DNS lookup on it. | |
493 | */ | |
4dd643d5 | 494 | if ( !sa.isAnyAddr() ) { |
62e76326 | 495 | |
4dd643d5 | 496 | sa.getAddrInfo(AI); |
cc192b50 | 497 | /* we are looking for a name. */ |
27bc2077 | 498 | if (getnameinfo(AI->ai_addr, AI->ai_addrlen, host, SQUIDHOSTNAMELEN, NULL, 0, NI_NAMEREQD ) == 0) { |
62e76326 | 499 | /* DNS lookup successful */ |
500 | /* use the official name from DNS lookup */ | |
cc192b50 | 501 | debugs(50, 4, "getMyHostname: resolved " << sa << " to '" << host << "'"); |
bf8fe701 | 502 | |
62e76326 | 503 | present = 1; |
504 | ||
4dd643d5 | 505 | Ip::Address::FreeAddrInfo(AI); |
cc192b50 | 506 | |
62e76326 | 507 | if (strchr(host, '.')) |
508 | return host; | |
62e76326 | 509 | } |
510 | ||
4dd643d5 | 511 | Ip::Address::FreeAddrInfo(AI); |
c19d1320 AJ |
512 | debugs(50, 2, "WARNING: failed to resolve " << sa << " to a fully qualified hostname"); |
513 | } | |
514 | ||
515 | // still no host. fallback to gethostname() | |
516 | if (gethostname(host, SQUIDHOSTNAMELEN) < 0) { | |
517 | debugs(50, DBG_IMPORTANT, "WARNING: gethostname failed: " << xstrerror()); | |
26ac0430 | 518 | } else { |
c19d1320 AJ |
519 | /* Verify that the hostname given resolves properly */ |
520 | struct addrinfo hints; | |
521 | memset(&hints, 0, sizeof(addrinfo)); | |
522 | hints.ai_flags = AI_CANONNAME; | |
62e76326 | 523 | |
c19d1320 AJ |
524 | if (getaddrinfo(host, NULL, NULL, &AI) == 0) { |
525 | /* DNS lookup successful */ | |
526 | /* use the official name from DNS lookup */ | |
527 | debugs(50, 6, "getMyHostname: '" << host << "' has DNS resolution."); | |
528 | present = 1; | |
529 | ||
530 | /* AYJ: do we want to flag AI_ALL and cache the result anywhere. ie as our local host IPs? */ | |
4dd643d5 | 531 | if (AI) |
c19d1320 | 532 | freeaddrinfo(AI); |
cc192b50 | 533 | |
c19d1320 | 534 | return host; |
cc192b50 | 535 | } |
c19d1320 | 536 | |
4dd643d5 AJ |
537 | if (AI) |
538 | freeaddrinfo(AI); | |
c19d1320 | 539 | debugs(50, DBG_IMPORTANT, "WARNING: '" << host << "' rDNS test failed: " << xstrerror()); |
44a47c6e | 540 | } |
62e76326 | 541 | |
c19d1320 AJ |
542 | /* throw a configuration error when the Host/IP given has bad DNS/rDNS. */ |
543 | debugs(50, DBG_CRITICAL, "WARNING: Could not determine this machines public hostname. " << | |
544 | "Please configure one or set 'visible_hostname'."); | |
a572d8be | 545 | |
c19d1320 | 546 | return ("localhost"); |
44a47c6e | 547 | } |
548 | ||
98829f69 | 549 | const char * |
550 | uniqueHostname(void) | |
551 | { | |
23c6ebc4 | 552 | debugs(21, 3, HERE << " Config: '" << Config.uniqueHostname << "'"); |
98829f69 | 553 | return Config.uniqueHostname ? Config.uniqueHostname : getMyHostname(); |
554 | } | |
555 | ||
23c6ebc4 | 556 | /** leave a priviliged section. (Give up any privilegies) |
30a4f2a8 | 557 | * Routines that need privilegies can rap themselves in enter_suid() |
558 | * and leave_suid() | |
559 | * To give upp all posibilites to gain privilegies use no_suid() | |
12b9e9b1 | 560 | */ |
b8d8561b | 561 | void |
0673c0ba | 562 | leave_suid(void) |
12b9e9b1 | 563 | { |
36584579 | 564 | debugs(21, 3, "leave_suid: PID " << getpid() << " called"); |
62e76326 | 565 | |
e3d74828 | 566 | if (Config.effectiveGroup) { |
567 | ||
568 | #if HAVE_SETGROUPS | |
569 | ||
570 | setgroups(1, &Config2.effectiveGroupID); | |
571 | ||
572 | #endif | |
573 | ||
574 | if (setgid(Config2.effectiveGroupID) < 0) | |
fa84c01d | 575 | debugs(50, DBG_CRITICAL, "ALERT: setgid: " << xstrerror()); |
e3d74828 | 576 | |
577 | } | |
578 | ||
12b9e9b1 | 579 | if (geteuid() != 0) |
62e76326 | 580 | return; |
581 | ||
12b9e9b1 | 582 | /* Started as a root, check suid option */ |
b6f794d6 | 583 | if (Config.effectiveUser == NULL) |
62e76326 | 584 | return; |
585 | ||
36584579 | 586 | debugs(21, 3, "leave_suid: PID " << getpid() << " giving up root, becoming '" << Config.effectiveUser << "'"); |
62e76326 | 587 | |
e3d74828 | 588 | if (!Config.effectiveGroup) { |
62e76326 | 589 | |
e3d74828 | 590 | if (setgid(Config2.effectiveGroupID) < 0) |
fa84c01d | 591 | debugs(50, DBG_CRITICAL, "ALERT: setgid: " << xstrerror()); |
62e76326 | 592 | |
e3d74828 | 593 | if (initgroups(Config.effectiveUser, Config2.effectiveGroupID) < 0) { |
fa84c01d | 594 | debugs(50, DBG_CRITICAL, "ALERT: initgroups: unable to set groups for User " << |
bf8fe701 | 595 | Config.effectiveUser << " and Group " << |
596 | (unsigned) Config2.effectiveGroupID << ""); | |
e3d74828 | 597 | } |
598 | } | |
62e76326 | 599 | |
234967c9 | 600 | #if HAVE_SETRESUID |
62e76326 | 601 | |
d20b1cd0 | 602 | if (setresuid(Config2.effectiveUserID, Config2.effectiveUserID, 0) < 0) |
fa84c01d | 603 | debugs(50, DBG_CRITICAL, "ALERT: setresuid: " << xstrerror()); |
62e76326 | 604 | |
234967c9 | 605 | #elif HAVE_SETEUID |
62e76326 | 606 | |
d20b1cd0 | 607 | if (seteuid(Config2.effectiveUserID) < 0) |
fa84c01d | 608 | debugs(50, DBG_CRITICAL, "ALERT: seteuid: " << xstrerror()); |
62e76326 | 609 | |
234967c9 | 610 | #else |
62e76326 | 611 | |
d20b1cd0 | 612 | if (setuid(Config2.effectiveUserID) < 0) |
fa84c01d | 613 | debugs(50, DBG_CRITICAL, "ALERT: setuid: " << xstrerror()); |
62e76326 | 614 | |
fc68f6b1 | 615 | #endif |
fc68f6b1 | 616 | |
329ce686 | 617 | restoreCapabilities(1); |
fc68f6b1 | 618 | |
62ae0622 | 619 | #if HAVE_PRCTL && defined(PR_SET_DUMPABLE) |
620 | /* Set Linux DUMPABLE flag */ | |
621 | if (Config.coredump_dir && prctl(PR_SET_DUMPABLE, 1) != 0) | |
bf8fe701 | 622 | debugs(50, 2, "ALERT: prctl: " << xstrerror()); |
62ae0622 | 623 | |
234967c9 | 624 | #endif |
625 | } | |
626 | ||
30a4f2a8 | 627 | /* Enter a privilegied section */ |
b8d8561b | 628 | void |
0673c0ba | 629 | enter_suid(void) |
234967c9 | 630 | { |
77468ee5 | 631 | debugs(21, 3, "enter_suid: PID " << getpid() << " taking root privileges"); |
234967c9 | 632 | #if HAVE_SETRESUID |
77468ee5 | 633 | if (setresuid((uid_t)-1, 0, (uid_t)-1) < 0) |
6595704b | 634 | debugs (21, 3, "enter_suid: setresuid failed: " << xstrerror ()); |
234967c9 | 635 | #else |
62e76326 | 636 | |
234967c9 | 637 | setuid(0); |
638 | #endif | |
62ae0622 | 639 | #if HAVE_PRCTL && defined(PR_SET_DUMPABLE) |
640 | /* Set Linux DUMPABLE flag */ | |
641 | ||
642 | if (Config.coredump_dir && prctl(PR_SET_DUMPABLE, 1) != 0) | |
bf8fe701 | 643 | debugs(50, 2, "ALERT: prctl: " << xstrerror()); |
62ae0622 | 644 | |
645 | #endif | |
234967c9 | 646 | } |
647 | ||
30a4f2a8 | 648 | /* Give up the posibility to gain privilegies. |
649 | * this should be used before starting a sub process | |
650 | */ | |
b8d8561b | 651 | void |
0673c0ba | 652 | no_suid(void) |
234967c9 | 653 | { |
654 | uid_t uid; | |
30a4f2a8 | 655 | leave_suid(); |
234967c9 | 656 | uid = geteuid(); |
329ce686 | 657 | debugs(21, 3, "no_suid: PID " << getpid() << " giving up root priveleges forever"); |
62e76326 | 658 | |
77468ee5 | 659 | if (setuid(0) < 0) |
6595704b | 660 | debugs(50, DBG_IMPORTANT, "WARNING: no_suid: setuid(0): " << xstrerror()); |
62e76326 | 661 | |
429fdbec | 662 | if (setuid(uid) < 0) |
77468ee5 | 663 | debugs(50, DBG_IMPORTANT, "ERROR: no_suid: setuid(" << uid << "): " << xstrerror()); |
62e76326 | 664 | |
329ce686 | 665 | restoreCapabilities(0); |
666 | ||
62ae0622 | 667 | #if HAVE_PRCTL && defined(PR_SET_DUMPABLE) |
668 | /* Set Linux DUMPABLE flag */ | |
669 | if (Config.coredump_dir && prctl(PR_SET_DUMPABLE, 1) != 0) | |
bf8fe701 | 670 | debugs(50, 2, "ALERT: prctl: " << xstrerror()); |
62ae0622 | 671 | |
234967c9 | 672 | #endif |
12b9e9b1 | 673 | } |
ccff9601 | 674 | |
a2c48c98 | 675 | bool |
7de94c8c | 676 | IamMasterProcess() |
a2c48c98 | 677 | { |
7de94c8c AR |
678 | return KidIdentifier == 0; |
679 | } | |
680 | ||
681 | bool | |
682 | IamWorkerProcess() | |
683 | { | |
684 | // when there is only one process, it has to be the worker | |
13aeac35 | 685 | if (opt_no_daemon || Config.workers == 0) |
7de94c8c AR |
686 | return true; |
687 | ||
095ec2b1 AR |
688 | return TheProcessKind == pkWorker; |
689 | } | |
690 | ||
691 | bool | |
692 | IamDiskProcess() | |
693 | { | |
694 | return TheProcessKind == pkDisker; | |
7de94c8c AR |
695 | } |
696 | ||
96c2bb61 AR |
697 | bool |
698 | InDaemonMode() | |
699 | { | |
700 | return !opt_no_daemon && Config.workers > 0; | |
701 | } | |
702 | ||
7de94c8c AR |
703 | bool |
704 | UsingSmp() | |
705 | { | |
095ec2b1 | 706 | return InDaemonMode() && NumberOfKids() > 1; |
7de94c8c AR |
707 | } |
708 | ||
709 | bool | |
710 | IamCoordinatorProcess() | |
711 | { | |
095ec2b1 | 712 | return TheProcessKind == pkCoordinator; |
7de94c8c AR |
713 | } |
714 | ||
715 | bool | |
716 | IamPrimaryProcess() | |
717 | { | |
718 | // when there is only one process, it has to be primary | |
13aeac35 | 719 | if (opt_no_daemon || Config.workers == 0) |
7de94c8c AR |
720 | return true; |
721 | ||
722 | // when there is a master and worker process, the master delegates | |
723 | // primary functions to its only kid | |
254912f3 | 724 | if (NumberOfKids() == 1) |
7de94c8c | 725 | return IamWorkerProcess(); |
a2c48c98 | 726 | |
7de94c8c AR |
727 | // in SMP mode, multiple kids delegate primary functions to the coordinator |
728 | return IamCoordinatorProcess(); | |
a2c48c98 AR |
729 | } |
730 | ||
96c2bb61 AR |
731 | int |
732 | NumberOfKids() | |
733 | { | |
734 | // no kids in no-daemon mode | |
735 | if (!InDaemonMode()) | |
736 | return 0; | |
737 | ||
095ec2b1 AR |
738 | // XXX: detect and abort when called before workers/cache_dirs are parsed |
739 | ||
14911a4e | 740 | const int rockDirs = Config.cacheSwap.n_strands; |
095ec2b1 AR |
741 | |
742 | const bool needCoord = Config.workers > 1 || rockDirs > 0; | |
743 | return (needCoord ? 1 : 0) + Config.workers + rockDirs; | |
744 | } | |
96c2bb61 | 745 | |
095ec2b1 AR |
746 | String |
747 | ProcessRoles() | |
748 | { | |
749 | String roles = ""; | |
750 | if (IamMasterProcess()) | |
751 | roles.append(" master"); | |
752 | if (IamCoordinatorProcess()) | |
753 | roles.append(" coordinator"); | |
754 | if (IamWorkerProcess()) | |
755 | roles.append(" worker"); | |
756 | if (IamDiskProcess()) | |
757 | roles.append(" disker"); | |
758 | return roles; | |
96c2bb61 AR |
759 | } |
760 | ||
b8d8561b | 761 | void |
0673c0ba | 762 | writePidFile(void) |
ccff9601 | 763 | { |
9e4ad609 | 764 | int fd; |
0b4639af | 765 | const char *f = NULL; |
973e9fe1 | 766 | mode_t old_umask; |
9e4ad609 | 767 | char buf[32]; |
62e76326 | 768 | |
7de94c8c | 769 | if (!IamPrimaryProcess()) |
a2c48c98 AR |
770 | return; |
771 | ||
9e4ad609 | 772 | if ((f = Config.pidFilename) == NULL) |
62e76326 | 773 | return; |
774 | ||
9e4ad609 | 775 | if (!strcmp(Config.pidFilename, "none")) |
62e76326 | 776 | return; |
777 | ||
30a4f2a8 | 778 | enter_suid(); |
62e76326 | 779 | |
973e9fe1 | 780 | old_umask = umask(022); |
62e76326 | 781 | |
c4aefe96 | 782 | fd = file_open(f, O_WRONLY | O_CREAT | O_TRUNC | O_TEXT); |
62e76326 | 783 | |
973e9fe1 | 784 | umask(old_umask); |
62e76326 | 785 | |
30a4f2a8 | 786 | leave_suid(); |
62e76326 | 787 | |
9e4ad609 | 788 | if (fd < 0) { |
fa84c01d | 789 | debugs(50, DBG_CRITICAL, "" << f << ": " << xstrerror()); |
62e76326 | 790 | debug_trap("Could not write pid file"); |
791 | return; | |
ccff9601 | 792 | } |
62e76326 | 793 | |
56878878 | 794 | snprintf(buf, 32, "%d\n", (int) getpid()); |
1f7c9178 | 795 | FD_WRITE_METHOD(fd, buf, strlen(buf)); |
9e4ad609 | 796 | file_close(fd); |
ccff9601 | 797 | } |
c4fb974e | 798 | |
ff8d0ea6 | 799 | pid_t |
0673c0ba | 800 | readPidFile(void) |
7690e8eb | 801 | { |
802 | FILE *pid_fp = NULL; | |
9e4ad609 | 803 | const char *f = Config.pidFilename; |
1ee742a2 | 804 | char *chroot_f = NULL; |
ff8d0ea6 | 805 | pid_t pid = -1; |
806 | int i; | |
7690e8eb | 807 | |
9e4ad609 | 808 | if (f == NULL || !strcmp(Config.pidFilename, "none")) { |
7dbca7a4 | 809 | fprintf(stderr, APP_SHORTNAME ": ERROR: No pid file name defined\n"); |
62e76326 | 810 | exit(1); |
7690e8eb | 811 | } |
62e76326 | 812 | |
1ee742a2 | 813 | if (Config.chroot_dir && geteuid() == 0) { |
814 | int len = strlen(Config.chroot_dir) + 1 + strlen(f) + 1; | |
815 | chroot_f = (char *)xmalloc(strlen(Config.chroot_dir) + 1 + strlen(f) + 1); | |
816 | snprintf(chroot_f, len, "%s/%s", Config.chroot_dir, f); | |
817 | f = chroot_f; | |
818 | } | |
819 | ||
7690e8eb | 820 | pid_fp = fopen(f, "r"); |
62e76326 | 821 | |
7690e8eb | 822 | if (pid_fp != NULL) { |
62e76326 | 823 | pid = 0; |
824 | ||
825 | if (fscanf(pid_fp, "%d", &i) == 1) | |
826 | pid = (pid_t) i; | |
827 | ||
828 | fclose(pid_fp); | |
7690e8eb | 829 | } else { |
62e76326 | 830 | if (errno != ENOENT) { |
7dbca7a4 | 831 | fprintf(stderr, APP_SHORTNAME ": ERROR: Could not read pid file\n"); |
62e76326 | 832 | fprintf(stderr, "\t%s: %s\n", f, xstrerror()); |
833 | exit(1); | |
834 | } | |
7690e8eb | 835 | } |
62e76326 | 836 | |
1ee742a2 | 837 | safe_free(chroot_f); |
7690e8eb | 838 | return pid; |
839 | } | |
840 | ||
f3f0f563 AJ |
841 | /* A little piece of glue for odd systems */ |
842 | #ifndef RLIMIT_NOFILE | |
843 | #ifdef RLIMIT_OFILE | |
844 | #define RLIMIT_NOFILE RLIMIT_OFILE | |
845 | #endif | |
846 | #endif | |
7690e8eb | 847 | |
f3f0f563 | 848 | /** Figure out the number of supported filedescriptors */ |
b8d8561b | 849 | void |
0673c0ba | 850 | setMaxFD(void) |
c4fb974e | 851 | { |
f3f0f563 | 852 | #if HAVE_SETRLIMIT && defined(RLIMIT_NOFILE) |
8527a56f | 853 | |
9064ed81 A |
854 | /* On Linux with 64-bit file support the sys/resource.h header |
855 | * uses #define to change the function definition to require rlimit64 | |
856 | */ | |
8527a56f AJ |
857 | #if defined(getrlimit) |
858 | struct rlimit64 rl; // Assume its a 64-bit redefine anyways. | |
859 | #else | |
c4fb974e | 860 | struct rlimit rl; |
8527a56f AJ |
861 | #endif |
862 | ||
c4fb974e | 863 | if (getrlimit(RLIMIT_NOFILE, &rl) < 0) { |
f3f0f563 AJ |
864 | debugs(50, DBG_CRITICAL, "setrlimit: RLIMIT_NOFILE: " << xstrerror()); |
865 | } else if (Config.max_filedescriptors > 0) { | |
0979b3a6 AJ |
866 | #if USE_SELECT || USE_SELECT_WIN32 |
867 | /* select() breaks if this gets set too big */ | |
1b7fae06 | 868 | if (Config.max_filedescriptors > FD_SETSIZE) { |
0979b3a6 | 869 | rl.rlim_cur = FD_SETSIZE; |
1b7fae06 AJ |
870 | debugs(50, DBG_CRITICAL, "WARNING: 'max_filedescriptors " << Config.max_filedescriptors << "' does not work with select()"); |
871 | } else | |
0979b3a6 AJ |
872 | #endif |
873 | rl.rlim_cur = Config.max_filedescriptors; | |
62e76326 | 874 | if (rl.rlim_cur > rl.rlim_max) |
f3f0f563 AJ |
875 | rl.rlim_max = rl.rlim_cur; |
876 | if (setrlimit(RLIMIT_NOFILE, &rl)) { | |
1b7fae06 | 877 | debugs(50, DBG_CRITICAL, "ERROR: setrlimit: RLIMIT_NOFILE: " << xstrerror()); |
f3f0f563 AJ |
878 | getrlimit(RLIMIT_NOFILE, &rl); |
879 | rl.rlim_cur = rl.rlim_max; | |
880 | if (setrlimit(RLIMIT_NOFILE, &rl)) { | |
1b7fae06 | 881 | debugs(50, DBG_CRITICAL, "ERROR: setrlimit: RLIMIT_NOFILE: " << xstrerror()); |
f3f0f563 | 882 | } |
62e76326 | 883 | } |
c4fb974e | 884 | } |
f3f0f563 | 885 | if (getrlimit(RLIMIT_NOFILE, &rl) < 0) { |
1b7fae06 | 886 | debugs(50, DBG_CRITICAL, "ERROR: getrlimit: RLIMIT_NOFILE: " << xstrerror()); |
c4fb974e | 887 | } else { |
f3f0f563 AJ |
888 | Squid_MaxFD = rl.rlim_cur; |
889 | } | |
62e76326 | 890 | |
f3f0f563 AJ |
891 | #endif /* HAVE_SETRLIMIT */ |
892 | } | |
62e76326 | 893 | |
f3f0f563 AJ |
894 | void |
895 | setSystemLimits(void) | |
896 | { | |
be266cb2 | 897 | #if HAVE_SETRLIMIT && defined(RLIMIT_NOFILE) && !_SQUID_CYGWIN_ |
f3f0f563 | 898 | /* limit system filedescriptors to our own limit */ |
8527a56f AJ |
899 | |
900 | /* On Linux with 64-bit file support the sys/resource.h header | |
901 | * uses #define to change the function definition to require rlimit64 | |
902 | */ | |
903 | #if defined(getrlimit) | |
904 | struct rlimit64 rl; // Assume its a 64-bit redefine anyways. | |
905 | #else | |
f3f0f563 | 906 | struct rlimit rl; |
8527a56f AJ |
907 | #endif |
908 | ||
f3f0f563 AJ |
909 | if (getrlimit(RLIMIT_NOFILE, &rl) < 0) { |
910 | debugs(50, DBG_CRITICAL, "setrlimit: RLIMIT_NOFILE: " << xstrerror()); | |
911 | } else { | |
912 | rl.rlim_cur = Squid_MaxFD; | |
913 | if (setrlimit(RLIMIT_NOFILE, &rl) < 0) { | |
914 | snprintf(tmp_error_buf, ERROR_BUF_SZ, "setrlimit: RLIMIT_NOFILE: %s", xstrerror()); | |
62e76326 | 915 | fatal_dump(tmp_error_buf); |
916 | } | |
c4fb974e | 917 | } |
30a4f2a8 | 918 | #endif /* HAVE_SETRLIMIT */ |
919 | ||
920 | #if HAVE_SETRLIMIT && defined(RLIMIT_DATA) | |
921 | if (getrlimit(RLIMIT_DATA, &rl) < 0) { | |
f3f0f563 | 922 | debugs(50, DBG_CRITICAL, "getrlimit: RLIMIT_DATA: " << xstrerror()); |
88738790 | 923 | } else if (rl.rlim_max > rl.rlim_cur) { |
62e76326 | 924 | rl.rlim_cur = rl.rlim_max; /* set it to the max */ |
925 | ||
926 | if (setrlimit(RLIMIT_DATA, &rl) < 0) { | |
f3f0f563 | 927 | snprintf(tmp_error_buf, ERROR_BUF_SZ, "setrlimit: RLIMIT_DATA: %s", xstrerror()); |
62e76326 | 928 | fatal_dump(tmp_error_buf); |
929 | } | |
30a4f2a8 | 930 | } |
931 | #endif /* RLIMIT_DATA */ | |
f3f0f563 AJ |
932 | if (Config.max_filedescriptors > Squid_MaxFD) { |
933 | debugs(50, DBG_IMPORTANT, "NOTICE: Could not increase the number of filedescriptors"); | |
934 | } | |
935 | ||
ad7ef91a | 936 | #if HAVE_SETRLIMIT && defined(RLIMIT_VMEM) |
937 | if (getrlimit(RLIMIT_VMEM, &rl) < 0) { | |
30c48b1a | 938 | debugs(50, DBG_CRITICAL, "getrlimit: RLIMIT_VMEM: " << xstrerror()); |
88738790 | 939 | } else if (rl.rlim_max > rl.rlim_cur) { |
62e76326 | 940 | rl.rlim_cur = rl.rlim_max; /* set it to the max */ |
941 | ||
942 | if (setrlimit(RLIMIT_VMEM, &rl) < 0) { | |
f3f0f563 | 943 | snprintf(tmp_error_buf, ERROR_BUF_SZ, "setrlimit: RLIMIT_VMEM: %s", xstrerror()); |
62e76326 | 944 | fatal_dump(tmp_error_buf); |
945 | } | |
ad7ef91a | 946 | } |
947 | #endif /* RLIMIT_VMEM */ | |
c4fb974e | 948 | } |
3a57089e | 949 | |
b8d8561b | 950 | void |
ea3a2a69 | 951 | squid_signal(int sig, SIGHDLR * func, int flags) |
30a4f2a8 | 952 | { |
953 | #if HAVE_SIGACTION | |
62e76326 | 954 | |
30a4f2a8 | 955 | struct sigaction sa; |
956 | sa.sa_handler = func; | |
957 | sa.sa_flags = flags; | |
958 | sigemptyset(&sa.sa_mask); | |
62e76326 | 959 | |
30a4f2a8 | 960 | if (sigaction(sig, &sa, NULL) < 0) |
30c48b1a | 961 | debugs(50, DBG_CRITICAL, "sigaction: sig=" << sig << " func=" << func << ": " << xstrerror()); |
62e76326 | 962 | |
30a4f2a8 | 963 | #else |
7aa9bb3e | 964 | #if _SQUID_WINDOWS_ |
06648839 | 965 | /* |
966 | On Windows, only SIGINT, SIGILL, SIGFPE, SIGTERM, SIGBREAK, SIGABRT and SIGSEGV signals | |
967 | are supported, so we must care of don't call signal() for other value. | |
968 | The SIGILL, SIGSEGV, and SIGTERM signals are not generated under Windows. They are defined | |
969 | for ANSI compatibility, so both SIGSEGV and SIGBUS are emulated with an Exception Handler. | |
970 | */ | |
971 | switch (sig) { | |
972 | ||
973 | case SIGINT: | |
974 | ||
975 | case SIGILL: | |
976 | ||
977 | case SIGFPE: | |
978 | ||
979 | case SIGTERM: | |
980 | ||
981 | case SIGBREAK: | |
982 | ||
983 | case SIGABRT: | |
984 | break; | |
985 | ||
986 | case SIGSEGV: | |
987 | WIN32_ExceptionHandlerInit(); | |
988 | break; | |
989 | ||
990 | case SIGBUS: | |
991 | WIN32_ExceptionHandlerInit(); | |
992 | return; | |
993 | break; /* Nor reached */ | |
994 | ||
995 | default: | |
996 | return; | |
997 | break; /* Nor reached */ | |
998 | } | |
999 | ||
1000 | #endif | |
62e76326 | 1001 | |
06648839 | 1002 | signal(sig, func); |
62e76326 | 1003 | |
30a4f2a8 | 1004 | #endif |
1005 | } | |
396c5745 | 1006 | |
70364f29 | 1007 | void |
1008 | logsFlush(void) | |
1009 | { | |
1010 | if (debug_log) | |
62e76326 | 1011 | fflush(debug_log); |
70364f29 | 1012 | } |
88738790 | 1013 | |
16300b58 | 1014 | void |
0e473d70 | 1015 | kb_incr(kb_t * k, size_t v) |
a7c05555 | 1016 | { |
0e473d70 | 1017 | k->bytes += v; |
1018 | k->kb += (k->bytes >> 10); | |
1019 | k->bytes &= 0x3FF; | |
a7c05555 | 1020 | } |
c1dabf04 | 1021 | |
a00a7c85 | 1022 | void |
6bbf9cc4 | 1023 | debugObj(int section, int level, const char *label, void *obj, ObjPackMethod pm) |
a00a7c85 | 1024 | { |
1025 | MemBuf mb; | |
1026 | Packer p; | |
6bbf9cc4 | 1027 | assert(label && obj && pm); |
2fe7eff9 | 1028 | mb.init(); |
a00a7c85 | 1029 | packerToMemInit(&p, &mb); |
0cdcddb9 | 1030 | (*pm) (obj, &p); |
bf8fe701 | 1031 | debugs(section, level, "" << label << "" << mb.buf << ""); |
a00a7c85 | 1032 | packerClean(&p); |
2fe7eff9 | 1033 | mb.clean(); |
a00a7c85 | 1034 | } |
d548ee64 | 1035 | |
0e70aa1e | 1036 | void |
1037 | parseEtcHosts(void) | |
1038 | { | |
1039 | FILE *fp; | |
1040 | char buf[1024]; | |
1041 | char buf2[512]; | |
1042 | char *nt = buf; | |
1043 | char *lt = buf; | |
fa2bfbab | 1044 | |
0e70aa1e | 1045 | if (NULL == Config.etcHostsPath) |
62e76326 | 1046 | return; |
1047 | ||
0e70aa1e | 1048 | if (0 == strcmp(Config.etcHostsPath, "none")) |
62e76326 | 1049 | return; |
1050 | ||
0e70aa1e | 1051 | fp = fopen(Config.etcHostsPath, "r"); |
62e76326 | 1052 | |
0e70aa1e | 1053 | if (fp == NULL) { |
e0236918 | 1054 | debugs(1, DBG_IMPORTANT, "parseEtcHosts: " << Config.etcHostsPath << ": " << xstrerror()); |
62e76326 | 1055 | return; |
0e70aa1e | 1056 | } |
62e76326 | 1057 | |
be266cb2 | 1058 | #if _SQUID_WINDOWS_ |
c4aefe96 | 1059 | setmode(fileno(fp), O_TEXT); |
1060 | #endif | |
62e76326 | 1061 | |
0e70aa1e | 1062 | while (fgets(buf, 1024, fp)) { /* for each line */ |
62e76326 | 1063 | wordlist *hosts = NULL; |
1064 | char *addr; | |
1065 | ||
c31616ae | 1066 | if (buf[0] == '#') /* MS-windows likes to add comments */ |
1067 | continue; | |
1068 | ||
7a10c315 | 1069 | strtok(buf, "#"); /* chop everything following a comment marker */ |
62e76326 | 1070 | |
1071 | lt = buf; | |
1072 | ||
1073 | addr = buf; | |
1074 | ||
bf8fe701 | 1075 | debugs(1, 5, "etc_hosts: line is '" << buf << "'"); |
62e76326 | 1076 | |
1077 | nt = strpbrk(lt, w_space); | |
1078 | ||
1079 | if (nt == NULL) /* empty line */ | |
1080 | continue; | |
1081 | ||
1082 | *nt = '\0'; /* null-terminate the address */ | |
1083 | ||
bf8fe701 | 1084 | debugs(1, 5, "etc_hosts: address is '" << addr << "'"); |
62e76326 | 1085 | |
1086 | lt = nt + 1; | |
1087 | ||
1088 | while ((nt = strpbrk(lt, w_space))) { | |
1089 | char *host = NULL; | |
1090 | ||
1091 | if (nt == lt) { /* multiple spaces */ | |
bf8fe701 | 1092 | debugs(1, 5, "etc_hosts: multiple spaces, skipping"); |
62e76326 | 1093 | lt = nt + 1; |
1094 | continue; | |
1095 | } | |
1096 | ||
1097 | *nt = '\0'; | |
bf8fe701 | 1098 | debugs(1, 5, "etc_hosts: got hostname '" << lt << "'"); |
62e76326 | 1099 | |
532e5dd4 AJ |
1100 | /* For IPV6 addresses also check for a colon */ |
1101 | if (Config.appendDomain && !strchr(lt, '.') && !strchr(lt, ':')) { | |
62e76326 | 1102 | /* I know it's ugly, but it's only at reconfig */ |
0a84e4fb AJ |
1103 | strncpy(buf2, lt, sizeof(buf2)-1); |
1104 | strncat(buf2, Config.appendDomain, sizeof(buf2) - strlen(lt) - 1); | |
50e746f3 | 1105 | buf2[sizeof(buf2)-1] = '\0'; |
62e76326 | 1106 | host = buf2; |
1107 | } else { | |
1108 | host = lt; | |
1109 | } | |
1110 | ||
f6a72b33 AJ |
1111 | if (ipcacheAddEntryFromHosts(host, addr) != 0) { |
1112 | /* invalid address, continuing is useless */ | |
1113 | wordlistDestroy(&hosts); | |
1114 | hosts = NULL; | |
1115 | break; | |
1116 | } | |
62e76326 | 1117 | wordlistAdd(&hosts, host); |
1118 | ||
1119 | lt = nt + 1; | |
1120 | } | |
1121 | ||
9e008dda | 1122 | if (hosts) { |
f6a72b33 AJ |
1123 | fqdncacheAddEntryFromHosts(addr, hosts); |
1124 | wordlistDestroy(&hosts); | |
1125 | } | |
0e70aa1e | 1126 | } |
62e76326 | 1127 | |
1f3c7397 | 1128 | fclose (fp); |
0e70aa1e | 1129 | } |
52f772de | 1130 | |
1131 | int | |
1132 | getMyPort(void) | |
1133 | { | |
65d448bc | 1134 | AnyP::PortCfg *p = NULL; |
c4ac4197 AJ |
1135 | if ((p = Config.Sockaddr.http)) { |
1136 | // skip any special interception ports | |
c3d24490 | 1137 | while (p && p->flags.isIntercepted()) |
af5ebaf4 AJ |
1138 | p = p->next; |
1139 | if (p) | |
4dd643d5 | 1140 | return p->s.port(); |
af5ebaf4 | 1141 | } |
62e76326 | 1142 | |
cb4f4424 | 1143 | #if USE_OPENSSL |
c4ac4197 AJ |
1144 | if ((p = Config.Sockaddr.https)) { |
1145 | // skip any special interception ports | |
c3d24490 | 1146 | while (p && p->flags.isIntercepted()) |
c4ac4197 AJ |
1147 | p = p->next; |
1148 | if (p) | |
4dd643d5 | 1149 | return p->s.port(); |
c4ac4197 | 1150 | } |
52f772de | 1151 | #endif |
62e76326 | 1152 | |
af5ebaf4 AJ |
1153 | debugs(21, DBG_CRITICAL, "ERROR: No forward-proxy ports configured."); |
1154 | return 0; // Invalid port. This will result in invalid URLs on bad configurations. | |
52f772de | 1155 | } |
d860a1aa | 1156 | |
c642c141 AJ |
1157 | /* |
1158 | * Set the umask to at least the given mask. This is in addition | |
1159 | * to the umask set at startup | |
1160 | */ | |
1161 | void | |
1162 | setUmask(mode_t mask) | |
1163 | { | |
1164 | // No way to get the current umask value without setting it. | |
1165 | static const mode_t orig_umask = umask(mask); // once, to get | |
1166 | umask(mask | orig_umask); // always, to set | |
1167 | } | |
d860a1aa | 1168 | |
1169 | /* | |
1170 | * Inverse of strwordtok. Quotes a word if needed | |
1171 | */ | |
42419a95 | 1172 | void |
d860a1aa | 1173 | strwordquote(MemBuf * mb, const char *str) |
1174 | { | |
1175 | int quoted = 0; | |
62e76326 | 1176 | |
d860a1aa | 1177 | if (strchr(str, ' ')) { |
62e76326 | 1178 | quoted = 1; |
2fe7eff9 | 1179 | mb->append("\"", 1); |
d860a1aa | 1180 | } |
62e76326 | 1181 | |
d860a1aa | 1182 | while (*str) { |
dc1af3cf | 1183 | int l = strcspn(str, "\"\\\n\r"); |
2fe7eff9 | 1184 | mb->append(str, l); |
62e76326 | 1185 | str += l; |
1186 | ||
26ac0430 | 1187 | switch (*str) { |
dc1af3cf | 1188 | |
1189 | case '\n': | |
2fe7eff9 | 1190 | mb->append("\\n", 2); |
5db6bf73 | 1191 | ++str; |
dc1af3cf | 1192 | break; |
1193 | ||
1194 | case '\r': | |
2fe7eff9 | 1195 | mb->append("\\r", 2); |
5db6bf73 | 1196 | ++str; |
dc1af3cf | 1197 | break; |
1198 | ||
1199 | case '\0': | |
1200 | break; | |
1201 | ||
1202 | default: | |
2fe7eff9 | 1203 | mb->append("\\", 1); |
1204 | mb->append(str, 1); | |
5db6bf73 | 1205 | ++str; |
dc1af3cf | 1206 | break; |
62e76326 | 1207 | } |
d860a1aa | 1208 | } |
62e76326 | 1209 | |
d860a1aa | 1210 | if (quoted) |
2fe7eff9 | 1211 | mb->append("\"", 1); |
d860a1aa | 1212 | } |
fc68f6b1 | 1213 | |
1214 | void | |
1215 | keepCapabilities(void) | |
1216 | { | |
b7ac5457 | 1217 | #if USE_LIBCAP && HAVE_PRCTL && defined(PR_SET_KEEPCAPS) |
329ce686 | 1218 | |
1219 | if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0)) { | |
b7ac5457 | 1220 | Ip::Interceptor.StopTransparency("capability setting has failed."); |
fc68f6b1 | 1221 | } |
fc68f6b1 | 1222 | #endif |
1223 | } | |
329ce686 | 1224 | |
1225 | static void | |
1226 | restoreCapabilities(int keep) | |
1227 | { | |
9e008dda | 1228 | /* NP: keep these two if-endif separate. Non-Linux work perfectly well without Linux syscap support. */ |
b64b6030 | 1229 | #if USE_LIBCAP |
c3487a77 HN |
1230 | cap_t caps; |
1231 | if (keep) | |
1232 | caps = cap_get_proc(); | |
1233 | else | |
1234 | caps = cap_init(); | |
1235 | if (!caps) { | |
b7ac5457 | 1236 | Ip::Interceptor.StopTransparency("Can't get current capabilities"); |
9e008dda | 1237 | } else { |
c3487a77 HN |
1238 | int ncaps = 0; |
1239 | int rc = 0; | |
1240 | cap_value_t cap_list[10]; | |
5db6bf73 FC |
1241 | cap_list[ncaps] = CAP_NET_BIND_SERVICE; |
1242 | ++ncaps; | |
425de4c8 | 1243 | if (Ip::Interceptor.TransparentActive() || Ip::Qos::TheConfig.isHitNfmarkActive() || Ip::Qos::TheConfig.isAclNfmarkActive()) { |
5db6bf73 FC |
1244 | cap_list[ncaps] = CAP_NET_ADMIN; |
1245 | ++ncaps; | |
fc32ce2e | 1246 | } |
329ce686 | 1247 | |
c3487a77 HN |
1248 | cap_clear_flag(caps, CAP_EFFECTIVE); |
1249 | rc |= cap_set_flag(caps, CAP_EFFECTIVE, ncaps, cap_list, CAP_SET); | |
1250 | rc |= cap_set_flag(caps, CAP_PERMITTED, ncaps, cap_list, CAP_SET); | |
329ce686 | 1251 | |
c3487a77 | 1252 | if (rc || cap_set_proc(caps) != 0) { |
b7ac5457 | 1253 | Ip::Interceptor.StopTransparency("Error enabling needed capabilities."); |
b5bd96ce | 1254 | } |
c3487a77 | 1255 | cap_free(caps); |
329ce686 | 1256 | } |
8a09e810 | 1257 | #elif _SQUID_LINUX_ |
b7ac5457 | 1258 | Ip::Interceptor.StopTransparency("Missing needed capability support."); |
b5bd96ce | 1259 | #endif /* HAVE_SYS_CAPABILITY_H */ |
329ce686 | 1260 | } |