main/logger.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 1999 - 2006, Digium, Inc.
   5  *
   6  * Mark Spencer <markster@digium.com>
   7  *
   8  * See http://www.asterisk.org for more information about
   9  * the Asterisk project. Please do not directly contact
  10  * any of the maintainers of this project for assistance;
  11  * the project provides a web site, mailing lists and IRC
  12  * channels for your use.
  13  *
  14  * This program is free software, distributed under the terms of
  15  * the GNU General Public License Version 2. See the LICENSE file
  16  * at the top of the source tree.
  17  */
  18
  19 /*! \file
  20  *
  21  * \brief Asterisk Logger
  22  *
  23  * Logging routines
  24  *
  25  * \author Mark Spencer <markster@digium.com>
  26  */
  27
  28 #include "asterisk.h"
  29
  30 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  31
  32 #include <signal.h>
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #include <unistd.h>
  36 #include <time.h>
  37 #include <string.h>
  38 #include <stdlib.h>
  39 #include <errno.h>
  40 #include <sys/stat.h>
  41 #if ((defined(AST_DEVMODE)) && (defined(linux)))
  42 #include <execinfo.h>
  43 #define MAX_BACKTRACE_FRAMES 20
  44 #endif
  45
  46 #define SYSLOG_NAMES /* so we can map syslog facilities names to their numeric values,
  47                         from <syslog.h> which is included by logger.h */
  48 #include <syslog.h>
  49
  50 static int syslog_level_map[] = {
  51         LOG_DEBUG,
  52         LOG_INFO,    /* arbitrary equivalent of LOG_EVENT */
  53         LOG_NOTICE,
  54         LOG_WARNING,
  55         LOG_ERR,
  56         LOG_DEBUG,
  57         LOG_DEBUG
  58 };
  59
  60 #define SYSLOG_NLEVELS sizeof(syslog_level_map) / sizeof(int)
  61
  62 #include "asterisk/logger.h"
  63 #include "asterisk/lock.h"
  64 #include "asterisk/options.h"
  65 #include "asterisk/channel.h"
  66 #include "asterisk/config.h"
  67 #include "asterisk/term.h"
  68 #include "asterisk/cli.h"
  69 #include "asterisk/utils.h"
  70 #include "asterisk/manager.h"
  71 #include "asterisk/threadstorage.h"
  72
  73 #if defined(__linux__) && !defined(__NR_gettid)
  74 #include <asm/unistd.h>
  75 #endif
  76
  77 #if defined(__linux__) && defined(__NR_gettid)
  78 #define GETTID() syscall(__NR_gettid)
  79 #else
  80 #define GETTID() getpid()
  81 #endif
  82
  83
  84 static char dateformat[256] = "%b %e %T";               /* Original Asterisk Format */
  85
  86 static int filesize_reload_needed;
  87 static int global_logmask = -1;
  88
  89 static struct {
  90         unsigned int queue_log:1;
  91         unsigned int event_log:1;
  92 } logfiles = { 1, 1 };
  93
  94 static char hostname[MAXHOSTNAMELEN];
  95
  96 enum logtypes {
  97         LOGTYPE_SYSLOG,
  98         LOGTYPE_FILE,
  99         LOGTYPE_CONSOLE,
 100 };
 101
 102 struct logchannel {
 103         int logmask;                    /* What to log to this channel */
 104         int disabled;                   /* If this channel is disabled or not */
 105         int facility;                   /* syslog facility */
 106         enum logtypes type;             /* Type of log channel */
 107         FILE *fileptr;                  /* logfile logging file pointer */
 108         char filename[256];             /* Filename */
 109         AST_LIST_ENTRY(logchannel) list;
 110 };
 111
 112 static AST_LIST_HEAD_STATIC(logchannels, logchannel);
 113
 114 static FILE *eventlog;
 115 static FILE *qlog;
 116
 117 static char *levels[] = {
 118         "DEBUG",
 119         "EVENT",
 120         "NOTICE",
 121         "WARNING",
 122         "ERROR",
 123         "VERBOSE",
 124         "DTMF"
 125 };
 126
 127 static int colors[] = {
 128         COLOR_BRGREEN,
 129         COLOR_BRBLUE,
 130         COLOR_YELLOW,
 131         COLOR_BRRED,
 132         COLOR_RED,
 133         COLOR_GREEN,
 134         COLOR_BRGREEN
 135 };
 136
 137 AST_THREADSTORAGE(verbose_buf, verbose_buf_init);
 138 #define VERBOSE_BUF_INIT_SIZE   128
 139
 140 AST_THREADSTORAGE(log_buf, log_buf_init);
 141 #define LOG_BUF_INIT_SIZE       128
 142
 143 static int make_components(char *s, int lineno)
 144 {
 145         char *w;
 146         int res = 0;
 147         char *stringp = s;
 148
 149         while ((w = strsep(&stringp, ","))) {
 150                 w = ast_skip_blanks(w);
 151                 if (!strcasecmp(w, "error"))
 152                         res |= (1 << __LOG_ERROR);
 153                 else if (!strcasecmp(w, "warning"))
 154                         res |= (1 << __LOG_WARNING);
 155                 else if (!strcasecmp(w, "notice"))
 156                         res |= (1 << __LOG_NOTICE);
 157                 else if (!strcasecmp(w, "event"))
 158                         res |= (1 << __LOG_EVENT);
 159                 else if (!strcasecmp(w, "debug"))
 160                         res |= (1 << __LOG_DEBUG);
 161                 else if (!strcasecmp(w, "verbose"))
 162                         res |= (1 << __LOG_VERBOSE);
 163                 else if (!strcasecmp(w, "dtmf"))
 164                         res |= (1 << __LOG_DTMF);
 165                 else {
 166                         fprintf(stderr, "Logfile Warning: Unknown keyword '%s' at line %d of logger.conf\n", w, lineno);
 167                 }
 168         }
 169
 170         return res;
 171 }
 172
 173 static struct logchannel *make_logchannel(char *channel, char *components, int lineno)
 174 {
 175         struct logchannel *chan;
 176         char *facility;
 177 #ifndef SOLARIS
 178         CODE *cptr;
 179 #endif
 180
 181         if (ast_strlen_zero(channel) || !(chan = ast_calloc(1, sizeof(*chan))))
 182                 return NULL;
 183
 184         if (!strcasecmp(channel, "console")) {
 185                 chan->type = LOGTYPE_CONSOLE;
 186         } else if (!strncasecmp(channel, "syslog", 6)) {
 187                 /*
 188                 * syntax is:
 189                 *  syslog.facility => level,level,level
 190                 */
 191                 facility = strchr(channel, '.');
 192                 if(!facility++ || !facility) {
 193                         facility = "local0";
 194                 }
 195
 196 #ifndef SOLARIS
 197                 /*
 198                 * Walk through the list of facilitynames (defined in sys/syslog.h)
 199                 * to see if we can find the one we have been given
 200                 */
 201                 chan->facility = -1;
 202                 cptr = facilitynames;
 203                 while (cptr->c_name) {
 204                         if (!strcasecmp(facility, cptr->c_name)) {
 205                                 chan->facility = cptr->c_val;
 206                                 break;
 207                         }
 208                         cptr++;
 209                 }
 210 #else
 211                 chan->facility = -1;
 212                 if (!strcasecmp(facility, "kern"))
 213                         chan->facility = LOG_KERN;
 214                 else if (!strcasecmp(facility, "USER"))
 215                         chan->facility = LOG_USER;
 216                 else if (!strcasecmp(facility, "MAIL"))
 217                         chan->facility = LOG_MAIL;
 218                 else if (!strcasecmp(facility, "DAEMON"))
 219                         chan->facility = LOG_DAEMON;
 220                 else if (!strcasecmp(facility, "AUTH"))
 221                         chan->facility = LOG_AUTH;
 222                 else if (!strcasecmp(facility, "SYSLOG"))
 223                         chan->facility = LOG_SYSLOG;
 224                 else if (!strcasecmp(facility, "LPR"))
 225                         chan->facility = LOG_LPR;
 226                 else if (!strcasecmp(facility, "NEWS"))
 227                         chan->facility = LOG_NEWS;
 228                 else if (!strcasecmp(facility, "UUCP"))
 229                         chan->facility = LOG_UUCP;
 230                 else if (!strcasecmp(facility, "CRON"))
 231                         chan->facility = LOG_CRON;
 232                 else if (!strcasecmp(facility, "LOCAL0"))
 233                         chan->facility = LOG_LOCAL0;
 234                 else if (!strcasecmp(facility, "LOCAL1"))
 235                         chan->facility = LOG_LOCAL1;
 236                 else if (!strcasecmp(facility, "LOCAL2"))
 237                         chan->facility = LOG_LOCAL2;
 238                 else if (!strcasecmp(facility, "LOCAL3"))
 239                         chan->facility = LOG_LOCAL3;
 240                 else if (!strcasecmp(facility, "LOCAL4"))
 241                         chan->facility = LOG_LOCAL4;
 242                 else if (!strcasecmp(facility, "LOCAL5"))
 243                         chan->facility = LOG_LOCAL5;
 244                 else if (!strcasecmp(facility, "LOCAL6"))
 245                         chan->facility = LOG_LOCAL6;
 246                 else if (!strcasecmp(facility, "LOCAL7"))
 247                         chan->facility = LOG_LOCAL7;
 248 #endif /* Solaris */
 249
 250                 if (0 > chan->facility) {
 251                         fprintf(stderr, "Logger Warning: bad syslog facility in logger.conf\n");
 252                         free(chan);
 253                         return NULL;
 254                 }
 255
 256                 chan->type = LOGTYPE_SYSLOG;
 257                 snprintf(chan->filename, sizeof(chan->filename), "%s", channel);
 258                 openlog("asterisk", LOG_PID, chan->facility);
 259         } else {
 260                 if (channel[0] == '/') {
 261                         if(!ast_strlen_zero(hostname)) {
 262                                 snprintf(chan->filename, sizeof(chan->filename) - 1,"%s.%s", channel, hostname);
 263                         } else {
 264                                 ast_copy_string(chan->filename, channel, sizeof(chan->filename));
 265                         }
 266                 }
 267
 268                 if(!ast_strlen_zero(hostname)) {
 269                         snprintf(chan->filename, sizeof(chan->filename), "%s/%s.%s",(char *)ast_config_AST_LOG_DIR, channel, hostname);
 270                 } else {
 271                         snprintf(chan->filename, sizeof(chan->filename), "%s/%s", (char *)ast_config_AST_LOG_DIR, channel);
 272                 }
 273                 chan->fileptr = fopen(chan->filename, "a");
 274                 if (!chan->fileptr) {
 275                         /* Can't log here, since we're called with a lock */
 276                         fprintf(stderr, "Logger Warning: Unable to open log file '%s': %s\n", chan->filename, strerror(errno));
 277                 }
 278                 chan->type = LOGTYPE_FILE;
 279         }
 280         chan->logmask = make_components(components, lineno);
 281         return chan;
 282 }
 283
 284 static void init_logger_chain(void)
 285 {
 286         struct logchannel *chan;
 287         struct ast_config *cfg;
 288         struct ast_variable *var;
 289         const char *s;
 290
 291         /* delete our list of log channels */
 292         AST_LIST_LOCK(&logchannels);
 293         while ((chan = AST_LIST_REMOVE_HEAD(&logchannels, list)))
 294                 free(chan);
 295         AST_LIST_UNLOCK(&logchannels);
 296
 297         global_logmask = 0;
 298         errno = 0;
 299         /* close syslog */
 300         closelog();
 301
 302         cfg = ast_config_load("logger.conf");
 303
 304         /* If no config file, we're fine, set default options. */
 305         if (!cfg) {
 306                 if (errno)
 307                         fprintf(stderr, "Unable to open logger.conf: %s; default settings will be used.\n", strerror(errno));
 308                 else
 309                         fprintf(stderr, "Errors detected in logger.conf: see above; default settings will be used.\n");
 310                 if (!(chan = ast_calloc(1, sizeof(*chan))))
 311                         return;
 312                 chan->type = LOGTYPE_CONSOLE;
 313                 chan->logmask = 28; /*warning,notice,error */
 314                 AST_LIST_LOCK(&logchannels);
 315                 AST_LIST_INSERT_HEAD(&logchannels, chan, list);
 316                 AST_LIST_UNLOCK(&logchannels);
 317                 global_logmask |= chan->logmask;
 318                 return;
 319         }
 320
 321         if ((s = ast_variable_retrieve(cfg, "general", "appendhostname"))) {
 322                 if (ast_true(s)) {
 323                         if (gethostname(hostname, sizeof(hostname) - 1)) {
 324                                 ast_copy_string(hostname, "unknown", sizeof(hostname));
 325                                 ast_log(LOG_WARNING, "What box has no hostname???\n");
 326                         }
 327                 } else
 328                         hostname[0] = '\0';
 329         } else
 330                 hostname[0] = '\0';
 331         if ((s = ast_variable_retrieve(cfg, "general", "dateformat")))
 332                 ast_copy_string(dateformat, s, sizeof(dateformat));
 333         else
 334                 ast_copy_string(dateformat, "%b %e %T", sizeof(dateformat));
 335         if ((s = ast_variable_retrieve(cfg, "general", "queue_log")))
 336                 logfiles.queue_log = ast_true(s);
 337         if ((s = ast_variable_retrieve(cfg, "general", "event_log")))
 338                 logfiles.event_log = ast_true(s);
 339
 340         AST_LIST_LOCK(&logchannels);
 341         var = ast_variable_browse(cfg, "logfiles");
 342         for (; var; var = var->next) {
 343                 if (!(chan = make_logchannel(var->name, var->value, var->lineno)))
 344                         continue;
 345                 AST_LIST_INSERT_HEAD(&logchannels, chan, list);
 346                 global_logmask |= chan->logmask;
 347         }
 348         AST_LIST_UNLOCK(&logchannels);
 349
 350         ast_config_destroy(cfg);
 351 }
 352
 353 void ast_queue_log(const char *queuename, const char *callid, const char *agent, const char *event, const char *fmt, ...)
 354 {
 355         va_list ap;
 356         AST_LIST_LOCK(&logchannels);
 357         if (qlog) {
 358                 va_start(ap, fmt);
 359                 fprintf(qlog, "%ld|%s|%s|%s|%s|", (long)time(NULL), callid, queuename, agent, event);
 360                 vfprintf(qlog, fmt, ap);
 361                 fprintf(qlog, "\n");
 362                 va_end(ap);
 363                 fflush(qlog);
 364         }
 365         AST_LIST_UNLOCK(&logchannels);
 366 }
 367
 368 int reload_logger(int rotate)
 369 {
 370         char old[PATH_MAX] = "";
 371         char new[PATH_MAX];
 372         int event_rotate = rotate, queue_rotate = rotate;
 373         struct logchannel *f;
 374         FILE *myf;
 375         int x, res = 0;
 376
 377         AST_LIST_LOCK(&logchannels);
 378
 379         if (eventlog)
 380                 fclose(eventlog);
 381         else
 382                 event_rotate = 0;
 383         eventlog = NULL;
 384
 385         if (qlog)
 386                 fclose(qlog);
 387         else
 388                 queue_rotate = 0;
 389         qlog = NULL;
 390
 391         mkdir((char *)ast_config_AST_LOG_DIR, 0755);
 392
 393         AST_LIST_TRAVERSE(&logchannels, f, list) {
 394                 if (f->disabled) {
 395                         f->disabled = 0;        /* Re-enable logging at reload */
 396                         manager_event(EVENT_FLAG_SYSTEM, "LogChannel", "Channel: %s\r\nEnabled: Yes\r\n", f->filename);
 397                 }
 398                 if (f->fileptr && (f->fileptr != stdout) && (f->fileptr != stderr)) {
 399                         fclose(f->fileptr);     /* Close file */
 400                         f->fileptr = NULL;
 401                         if (rotate) {
 402                                 ast_copy_string(old, f->filename, sizeof(old));
 403
 404                                 for (x = 0; ; x++) {
 405                                         snprintf(new, sizeof(new), "%s.%d", f->filename, x);
 406                                         myf = fopen((char *)new, "r");
 407                                         if (myf)
 408                                                 fclose(myf);
 409                                         else
 410                                                 break;
 411                                 }
 412
 413                                 /* do it */
 414                                 if (rename(old,new))
 415                                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", old, new);
 416                         }
 417                 }
 418         }
 419
 420         filesize_reload_needed = 0;
 421
 422         init_logger_chain();
 423
 424         if (logfiles.event_log) {
 425                 snprintf(old, sizeof(old), "%s/%s", (char *)ast_config_AST_LOG_DIR, EVENTLOG);
 426                 if (event_rotate) {
 427                         for (x=0;;x++) {
 428                                 snprintf(new, sizeof(new), "%s/%s.%d", (char *)ast_config_AST_LOG_DIR, EVENTLOG,x);
 429                                 myf = fopen((char *)new, "r");
 430                                 if (myf)        /* File exists */
 431                                         fclose(myf);
 432                                 else
 433                                         break;
 434                         }
 435
 436                         /* do it */
 437                         if (rename(old,new))
 438                                 ast_log(LOG_ERROR, "Unable to rename file '%s' to '%s'\n", old, new);
 439                 }
 440
 441                 eventlog = fopen(old, "a");
 442                 if (eventlog) {
 443                         ast_log(LOG_EVENT, "Restarted Asterisk Event Logger\n");
 444                         if (option_verbose)
 445                                 ast_verbose("Asterisk Event Logger restarted\n");
 446                 } else {
 447                         ast_log(LOG_ERROR, "Unable to create event log: %s\n", strerror(errno));
 448                         res = -1;
 449                 }
 450         }
 451
 452         if (logfiles.queue_log) {
 453                 snprintf(old, sizeof(old), "%s/%s", (char *)ast_config_AST_LOG_DIR, QUEUELOG);
 454                 if (queue_rotate) {
 455                         for (x = 0; ; x++) {
 456                                 snprintf(new, sizeof(new), "%s/%s.%d", (char *)ast_config_AST_LOG_DIR, QUEUELOG, x);
 457                                 myf = fopen((char *)new, "r");
 458                                 if (myf)        /* File exists */
 459                                         fclose(myf);
 460                                 else
 461                                         break;
 462                         }
 463
 464                         /* do it */
 465                         if (rename(old, new))
 466                                 ast_log(LOG_ERROR, "Unable to rename file '%s' to '%s'\n", old, new);
 467                 }
 468
 469                 qlog = fopen(old, "a");
 470                 if (qlog) {
 471                         ast_queue_log("NONE", "NONE", "NONE", "CONFIGRELOAD", "%s", "");
 472                         ast_log(LOG_EVENT, "Restarted Asterisk Queue Logger\n");
 473                         if (option_verbose)
 474                                 ast_verbose("Asterisk Queue Logger restarted\n");
 475                 } else {
 476                         ast_log(LOG_ERROR, "Unable to create queue log: %s\n", strerror(errno));
 477                         res = -1;
 478                 }
 479         }
 480
 481         AST_LIST_UNLOCK(&logchannels);
 482
 483         return res;
 484 }
 485
 486 /*! \brief Reload the logger module without rotating log files (also used from loader.c during
 487         a full Asterisk reload) */
 488 int logger_reload(void)
 489 {
 490         if(reload_logger(0))
 491                 return RESULT_FAILURE;
 492         return RESULT_SUCCESS;
 493 }
 494
 495 static int handle_logger_reload(int fd, int argc, char *argv[])
 496 {
 497         int result = logger_reload();
 498         if (result == RESULT_FAILURE)
 499                 ast_cli(fd, "Failed to reload the logger\n");
 500         return result;
 501 }
 502
 503 static int handle_logger_rotate(int fd, int argc, char *argv[])
 504 {
 505         if(reload_logger(1)) {
 506                 ast_cli(fd, "Failed to reload the logger and rotate log files\n");
 507                 return RESULT_FAILURE;
 508         }
 509         return RESULT_SUCCESS;
 510 }
 511
 512 /*! \brief CLI command to show logging system configuration */
 513 static int handle_logger_show_channels(int fd, int argc, char *argv[])
 514 {
 515 #define FORMATL "%-35.35s %-8.8s %-9.9s "
 516         struct logchannel *chan;
 517
 518         ast_cli(fd,FORMATL, "Channel", "Type", "Status");
 519         ast_cli(fd, "Configuration\n");
 520         ast_cli(fd,FORMATL, "-------", "----", "------");
 521         ast_cli(fd, "-------------\n");
 522         AST_LIST_LOCK(&logchannels);
 523         AST_LIST_TRAVERSE(&logchannels, chan, list) {
 524                 ast_cli(fd, FORMATL, chan->filename, chan->type==LOGTYPE_CONSOLE ? "Console" : (chan->type==LOGTYPE_SYSLOG ? "Syslog" : "File"),
 525                         chan->disabled ? "Disabled" : "Enabled");
 526                 ast_cli(fd, " - ");
 527                 if (chan->logmask & (1 << __LOG_DEBUG))
 528                         ast_cli(fd, "Debug ");
 529                 if (chan->logmask & (1 << __LOG_DTMF))
 530                         ast_cli(fd, "DTMF ");
 531                 if (chan->logmask & (1 << __LOG_VERBOSE))
 532                         ast_cli(fd, "Verbose ");
 533                 if (chan->logmask & (1 << __LOG_WARNING))
 534                         ast_cli(fd, "Warning ");
 535                 if (chan->logmask & (1 << __LOG_NOTICE))
 536                         ast_cli(fd, "Notice ");
 537                 if (chan->logmask & (1 << __LOG_ERROR))
 538                         ast_cli(fd, "Error ");
 539                 if (chan->logmask & (1 << __LOG_EVENT))
 540                         ast_cli(fd, "Event ");
 541                 ast_cli(fd, "\n");
 542         }
 543         AST_LIST_UNLOCK(&logchannels);
 544         ast_cli(fd, "\n");
 545
 546         return RESULT_SUCCESS;
 547 }
 548
 549 struct verb {
 550         void (*verboser)(const char *string);
 551         AST_LIST_ENTRY(verb) list;
 552 };
 553
 554 static AST_LIST_HEAD_STATIC(verbosers, verb);
 555
 556 static char logger_reload_help[] =
 557 "Usage: logger reload\n"
 558 "       Reloads the logger subsystem state.  Use after restarting syslogd(8) if you are using syslog logging.\n";
 559
 560 static char logger_rotate_help[] =
 561 "Usage: logger rotate\n"
 562 "       Rotates and Reopens the log files.\n";
 563
 564 static char logger_show_channels_help[] =
 565 "Usage: logger show channels\n"
 566 "       List configured logger channels.\n";
 567
 568 static struct ast_cli_entry cli_logger[] = {
 569         { { "logger", "show", "channels", NULL },
 570         handle_logger_show_channels, "List configured log channels",
 571         logger_show_channels_help },
 572
 573         { { "logger", "reload", NULL },
 574         handle_logger_reload, "Reopens the log files",
 575         logger_reload_help },
 576
 577         { { "logger", "rotate", NULL },
 578         handle_logger_rotate, "Rotates and reopens the log files",
 579         logger_rotate_help },
 580 };
 581
 582 static int handle_SIGXFSZ(int sig)
 583 {
 584         /* Indicate need to reload */
 585         filesize_reload_needed = 1;
 586         return 0;
 587 }
 588
 589 int init_logger(void)
 590 {
 591         char tmp[256];
 592         int res = 0;
 593
 594         /* auto rotate if sig SIGXFSZ comes a-knockin */
 595         (void) signal(SIGXFSZ,(void *) handle_SIGXFSZ);
 596
 597         /* register the logger cli commands */
 598         ast_cli_register_multiple(cli_logger, sizeof(cli_logger) / sizeof(struct ast_cli_entry));
 599
 600         mkdir((char *)ast_config_AST_LOG_DIR, 0755);
 601
 602         /* create log channels */
 603         init_logger_chain();
 604
 605         /* create the eventlog */
 606         if (logfiles.event_log) {
 607                 mkdir((char *)ast_config_AST_LOG_DIR, 0755);
 608                 snprintf(tmp, sizeof(tmp), "%s/%s", (char *)ast_config_AST_LOG_DIR, EVENTLOG);
 609                 eventlog = fopen((char *)tmp, "a");
 610                 if (eventlog) {
 611                         ast_log(LOG_EVENT, "Started Asterisk Event Logger\n");
 612                         if (option_verbose)
 613                                 ast_verbose("Asterisk Event Logger Started %s\n",(char *)tmp);
 614                 } else {
 615                         ast_log(LOG_ERROR, "Unable to create event log: %s\n", strerror(errno));
 616                         res = -1;
 617                 }
 618         }
 619
 620         if (logfiles.queue_log) {
 621                 snprintf(tmp, sizeof(tmp), "%s/%s", (char *)ast_config_AST_LOG_DIR, QUEUELOG);
 622                 qlog = fopen(tmp, "a");
 623                 ast_queue_log("NONE", "NONE", "NONE", "QUEUESTART", "%s", "");
 624         }
 625         return res;
 626 }
 627
 628 void close_logger(void)
 629 {
 630         struct logchannel *f;
 631
 632         AST_LIST_LOCK(&logchannels);
 633
 634         if (eventlog) {
 635                 fclose(eventlog);
 636                 eventlog = NULL;
 637         }
 638
 639         if (qlog) {
 640                 fclose(qlog);
 641                 qlog = NULL;
 642         }
 643
 644         AST_LIST_TRAVERSE(&logchannels, f, list) {
 645                 if (f->fileptr && (f->fileptr != stdout) && (f->fileptr != stderr)) {
 646                         fclose(f->fileptr);
 647                         f->fileptr = NULL;
 648                 }
 649         }
 650
 651         closelog(); /* syslog */
 652
 653         AST_LIST_UNLOCK(&logchannels);
 654
 655         return;
 656 }
 657
 658 static void ast_log_vsyslog(int level, const char *file, int line, const char *function, const char *fmt, va_list args)
 659 {
 660         char buf[BUFSIZ];
 661         char *s;
 662
 663         if (level >= SYSLOG_NLEVELS) {
 664                 /* we are locked here, so cannot ast_log() */
 665                 fprintf(stderr, "ast_log_vsyslog called with bogus level: %d\n", level);
 666                 return;
 667         }
 668         if (level == __LOG_VERBOSE) {
 669                 snprintf(buf, sizeof(buf), "VERBOSE[%ld]: ", (long)GETTID());
 670                 level = __LOG_DEBUG;
 671         } else if (level == __LOG_DTMF) {
 672                 snprintf(buf, sizeof(buf), "DTMF[%ld]: ", (long)GETTID());
 673                 level = __LOG_DEBUG;
 674         } else {
 675                 snprintf(buf, sizeof(buf), "%s[%ld]: %s:%d in %s: ",
 676                          levels[level], (long)GETTID(), file, line, function);
 677         }
 678         s = buf + strlen(buf);
 679         vsnprintf(s, sizeof(buf) - strlen(buf), fmt, args);
 680         term_strip(s, s, strlen(s) + 1);
 681         syslog(syslog_level_map[level], "%s", buf);
 682 }
 683
 684 /*!
 685  * \brief send log messages to syslog and/or the console
 686  */
 687 void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
 688 {
 689         struct logchannel *chan;
 690         struct ast_dynamic_str *buf;
 691         time_t t;
 692         struct tm tm;
 693         char date[256];
 694
 695         va_list ap;
 696
 697         if (!(buf = ast_dynamic_str_thread_get(&log_buf, LOG_BUF_INIT_SIZE)))
 698                 return;
 699
 700         if (AST_LIST_EMPTY(&logchannels))
 701         {
 702                 /*
 703                  * we don't have the logger chain configured yet,
 704                  * so just log to stdout
 705                 */
 706                 if (level != __LOG_VERBOSE) {
 707                         int res;
 708                         va_start(ap, fmt);
 709                         res = ast_dynamic_str_thread_set_va(&buf, BUFSIZ, &log_buf, fmt, ap);
 710                         va_end(ap);
 711                         if (res != AST_DYNSTR_BUILD_FAILED) {
 712                                 term_filter_escapes(buf->str);
 713                                 fputs(buf->str, stdout);
 714                         }
 715                 }
 716                 return;
 717         }
 718
 719         /* don't display LOG_DEBUG messages unless option_verbose _or_ option_debug
 720            are non-zero; LOG_DEBUG messages can still be displayed if option_debug
 721            is zero, if option_verbose is non-zero (this allows for 'level zero'
 722            LOG_DEBUG messages to be displayed, if the logmask on any channel
 723            allows it)
 724         */
 725         if (!option_verbose && !option_debug && (level == __LOG_DEBUG))
 726                 return;
 727
 728         /* Ignore anything that never gets logged anywhere */
 729         if (!(global_logmask & (1 << level)))
 730                 return;
 731
 732         /* Ignore anything other than the currently debugged file if there is one */
 733         if ((level == __LOG_DEBUG) && !ast_strlen_zero(debug_filename) && strcasecmp(debug_filename, file))
 734                 return;
 735
 736         time(&t);
 737         ast_localtime(&t, &tm, NULL);
 738         strftime(date, sizeof(date), dateformat, &tm);
 739
 740         AST_LIST_LOCK(&logchannels);
 741
 742         if (logfiles.event_log && level == __LOG_EVENT) {
 743                 va_start(ap, fmt);
 744
 745                 fprintf(eventlog, "%s asterisk[%ld]: ", date, (long)getpid());
 746                 vfprintf(eventlog, fmt, ap);
 747                 fflush(eventlog);
 748
 749                 va_end(ap);
 750                 AST_LIST_UNLOCK(&logchannels);
 751                 return;
 752         }
 753
 754         AST_LIST_TRAVERSE(&logchannels, chan, list) {
 755                 if (chan->disabled)
 756                         break;
 757                 /* Check syslog channels */
 758                 if (chan->type == LOGTYPE_SYSLOG && (chan->logmask & (1 << level))) {
 759                         va_start(ap, fmt);
 760                         ast_log_vsyslog(level, file, line, function, fmt, ap);
 761                         va_end(ap);
 762                 /* Console channels */
 763                 } else if ((chan->logmask & (1 << level)) && (chan->type == LOGTYPE_CONSOLE)) {
 764                         char linestr[128];
 765                         char tmp1[80], tmp2[80], tmp3[80], tmp4[80];
 766
 767                         if (level != __LOG_VERBOSE) {
 768                                 int res;
 769                                 sprintf(linestr, "%d", line);
 770                                 ast_dynamic_str_thread_set(&buf, BUFSIZ, &log_buf,
 771                                         "[%s] %s[%ld]: %s:%s %s: ",
 772                                         date,
 773                                         term_color(tmp1, levels[level], colors[level], 0, sizeof(tmp1)),
 774                                         (long)GETTID(),
 775                                         term_color(tmp2, file, COLOR_BRWHITE, 0, sizeof(tmp2)),
 776                                         term_color(tmp3, linestr, COLOR_BRWHITE, 0, sizeof(tmp3)),
 777                                         term_color(tmp4, function, COLOR_BRWHITE, 0, sizeof(tmp4)));
 778                                 /*filter to the console!*/
 779                                 term_filter_escapes(buf->str);
 780                                 ast_console_puts_mutable(buf->str);
 781
 782                                 va_start(ap, fmt);
 783                                 res = ast_dynamic_str_thread_set_va(&buf, BUFSIZ, &log_buf, fmt, ap);
 784                                 va_end(ap);
 785                                 if (res != AST_DYNSTR_BUILD_FAILED)
 786                                         ast_console_puts_mutable(buf->str);
 787                         }
 788                 /* File channels */
 789                 } else if ((chan->logmask & (1 << level)) && (chan->fileptr)) {
 790                         int res;
 791                         ast_dynamic_str_thread_set(&buf, BUFSIZ, &log_buf,
 792                                 "[%s] %s[%ld] %s: ",
 793                                 date, levels[level], (long)GETTID(), file);
 794                         res = fprintf(chan->fileptr, "%s", buf->str);
 795                         if (res <= 0 && !ast_strlen_zero(buf->str)) {   /* Error, no characters printed */
 796                                 fprintf(stderr,"**** Asterisk Logging Error: ***********\n");
 797                                 if (errno == ENOMEM || errno == ENOSPC) {
 798                                         fprintf(stderr, "Asterisk logging error: Out of disk space, can't log to log file %s\n", chan->filename);
 799                                 } else
 800                                         fprintf(stderr, "Logger Warning: Unable to write to log file '%s': %s (disabled)\n", chan->filename, strerror(errno));
 801                                 manager_event(EVENT_FLAG_SYSTEM, "LogChannel", "Channel: %s\r\nEnabled: No\r\nReason: %d - %s\r\n", chan->filename, errno, strerror(errno));
 802                                 chan->disabled = 1;
 803                         } else {
 804                                 int res;
 805                                 /* No error message, continue printing */
 806                                 va_start(ap, fmt);
 807                                 res = ast_dynamic_str_thread_set_va(&buf, BUFSIZ, &log_buf, fmt, ap);
 808                                 va_end(ap);
 809                                 if (res != AST_DYNSTR_BUILD_FAILED) {
 810                                         term_strip(buf->str, buf->str, buf->len);
 811                                         fputs(buf->str, chan->fileptr);
 812                                         fflush(chan->fileptr);
 813                                 }
 814                         }
 815                 }
 816         }
 817
 818         AST_LIST_UNLOCK(&logchannels);
 819
 820         if (filesize_reload_needed) {
 821                 reload_logger(1);
 822                 ast_log(LOG_EVENT,"Rotated Logs Per SIGXFSZ (Exceeded file size limit)\n");
 823                 if (option_verbose)
 824                         ast_verbose("Rotated Logs Per SIGXFSZ (Exceeded file size limit)\n");
 825         }
 826 }
 827
 828 void ast_backtrace(void)
 829 {
 830 #ifdef linux
 831 #ifdef AST_DEVMODE
 832         int count=0, i=0;
 833         void **addresses;
 834         char **strings;
 835
 836         if ((addresses = ast_calloc(MAX_BACKTRACE_FRAMES, sizeof(*addresses)))) {
 837                 count = backtrace(addresses, MAX_BACKTRACE_FRAMES);
 838                 if ((strings = backtrace_symbols(addresses, count))) {
 839                         ast_log(LOG_DEBUG, "Got %d backtrace record%c\n", count, count != 1 ? 's' : ' ');
 840                         for (i=0; i < count ; i++) {
 841 #if __WORDSIZE == 32
 842                                 ast_log(LOG_DEBUG, "#%d: [%08X] %s\n", i, (unsigned int)addresses[i], strings[i]);
 843 #elif __WORDSIZE == 64
 844                                 ast_log(LOG_DEBUG, "#%d: [%016lX] %s\n", i, (unsigned long)addresses[i], strings[i]);
 845 #endif
 846                         }
 847                         free(strings);
 848                 } else {
 849                         ast_log(LOG_DEBUG, "Could not allocate memory for backtrace\n");
 850                 }
 851                 free(addresses);
 852         }
 853 #else
 854         ast_log(LOG_WARNING, "Must run configure with '--enable-dev-mode' for stack backtraces.\n");
 855 #endif
 856 #else /* ndef linux */
 857         ast_log(LOG_WARNING, "Inline stack backtraces are only available on the Linux platform.\n");
 858 #endif
 859 }
 860
 861 void ast_verbose(const char *fmt, ...)
 862 {
 863         struct verb *v;
 864         struct ast_dynamic_str *buf;
 865         int res;
 866         va_list ap;
 867
 868         if (ast_opt_timestamp) {
 869                 time_t t;
 870                 struct tm tm;
 871                 char date[40];
 872                 char *datefmt;
 873
 874                 time(&t);
 875                 ast_localtime(&t, &tm, NULL);
 876                 strftime(date, sizeof(date), dateformat, &tm);
 877                 datefmt = alloca(strlen(date) + 3 + strlen(fmt) + 1);
 878                 sprintf(datefmt, "%c[%s] %s", 127, date, fmt);
 879                 fmt = datefmt;
 880         } else {
 881                 char *tmp = alloca(strlen(fmt) + 2);
 882                 sprintf(tmp, "%c%s", 127, fmt);
 883                 fmt = tmp;
 884         }
 885
 886         if (!(buf = ast_dynamic_str_thread_get(&verbose_buf, VERBOSE_BUF_INIT_SIZE)))
 887                 return;
 888
 889         va_start(ap, fmt);
 890         res = ast_dynamic_str_thread_set_va(&buf, 0, &verbose_buf, fmt, ap);
 891         va_end(ap);
 892
 893         if (res == AST_DYNSTR_BUILD_FAILED)
 894                 return;
 895
 896         /* filter out possibly hazardous escape sequences */
 897         term_filter_escapes(buf->str);
 898
 899         AST_LIST_LOCK(&verbosers);
 900         AST_LIST_TRAVERSE(&verbosers, v, list)
 901                 v->verboser(buf->str);
 902         AST_LIST_UNLOCK(&verbosers);
 903
 904         ast_log(LOG_VERBOSE, "%s", buf->str + 1);
 905 }
 906
 907 int ast_register_verbose(void (*v)(const char *string))
 908 {
 909         struct verb *verb;
 910
 911         if (!(verb = ast_malloc(sizeof(*verb))))
 912                 return -1;
 913
 914         verb->verboser = v;
 915
 916         AST_LIST_LOCK(&verbosers);
 917         AST_LIST_INSERT_HEAD(&verbosers, verb, list);
 918         AST_LIST_UNLOCK(&verbosers);
 919
 920         return 0;
 921 }
 922
 923 int ast_unregister_verbose(void (*v)(const char *string))
 924 {
 925         struct verb *cur;
 926
 927         AST_LIST_LOCK(&verbosers);
 928         AST_LIST_TRAVERSE_SAFE_BEGIN(&verbosers, cur, list) {
 929                 if (cur->verboser == v) {
 930                         AST_LIST_REMOVE_CURRENT(&verbosers, list);
 931                         free(cur);
 932                         break;
 933                 }
 934         }
 935         AST_LIST_TRAVERSE_SAFE_END
 936         AST_LIST_UNLOCK(&verbosers);
 937
 938         return cur ? 0 : -1;
 939 }