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 /*
  29  * define _ASTERISK_LOGGER_H to prevent the inclusion of logger.h;
  30  * it redefines LOG_* which we need to define syslog_level_map.
  31  * later, we force the inclusion of logger.h again.
  32  */
  33 #define _ASTERISK_LOGGER_H
  34 #include "asterisk.h"
  35
  36 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  37
  38 #include "asterisk/_private.h"
  39 #include "asterisk/paths.h"     /* use ast_config_AST_LOG_DIR */
  40 #include <signal.h>
  41 #include <time.h>
  42 #include <sys/stat.h>
  43 #include <fcntl.h>
  44 #ifdef HAVE_BKTR
  45 #include <execinfo.h>
  46 #define MAX_BACKTRACE_FRAMES 20
  47 #endif
  48
  49 #define SYSLOG_NAMES /* so we can map syslog facilities names to their numeric values,
  50                         from <syslog.h> which is included by logger.h */
  51 #include <syslog.h>
  52
  53 static int syslog_level_map[] = {
  54         LOG_DEBUG,
  55         LOG_INFO,    /* arbitrary equivalent of LOG_EVENT */
  56         LOG_NOTICE,
  57         LOG_WARNING,
  58         LOG_ERR,
  59         LOG_DEBUG,
  60         LOG_DEBUG
  61 };
  62
  63 #define SYSLOG_NLEVELS sizeof(syslog_level_map) / sizeof(int)
  64
  65 #undef _ASTERISK_LOGGER_H       /* now include logger.h */
  66 #include "asterisk/logger.h"
  67 #include "asterisk/lock.h"
  68 #include "asterisk/channel.h"
  69 #include "asterisk/config.h"
  70 #include "asterisk/term.h"
  71 #include "asterisk/cli.h"
  72 #include "asterisk/utils.h"
  73 #include "asterisk/manager.h"
  74 #include "asterisk/threadstorage.h"
  75 #include "asterisk/strings.h"
  76 #include "asterisk/pbx.h"
  77
  78 #if defined(__linux__) && !defined(__NR_gettid)
  79 #include <asm/unistd.h>
  80 #endif
  81
  82 #if defined(__linux__) && defined(__NR_gettid)
  83 #define GETTID() syscall(__NR_gettid)
  84 #else
  85 #define GETTID() getpid()
  86 #endif
  87
  88 static char dateformat[256] = "%b %e %T";               /* Original Asterisk Format */
  89
  90 static char queue_log_name[256] = QUEUELOG;
  91 static char exec_after_rotate[256] = "";
  92
  93 static int filesize_reload_needed;
  94 static int global_logmask = -1;
  95
  96 enum rotatestrategy {
  97         SEQUENTIAL = 1 << 0,     /* Original method - create a new file, in order */
  98         ROTATE = 1 << 1,         /* Rotate all files, such that the oldest file has the highest suffix */
  99         TIMESTAMP = 1 << 2,      /* Append the epoch timestamp onto the end of the archived file */
 100 } rotatestrategy = SEQUENTIAL;
 101
 102 static struct {
 103         unsigned int queue_log:1;
 104         unsigned int event_log:1;
 105 } logfiles = { 1, 1 };
 106
 107 static char hostname[MAXHOSTNAMELEN];
 108
 109 enum logtypes {
 110         LOGTYPE_SYSLOG,
 111         LOGTYPE_FILE,
 112         LOGTYPE_CONSOLE,
 113 };
 114
 115 struct logchannel {
 116         int logmask;                    /* What to log to this channel */
 117         int disabled;                   /* If this channel is disabled or not */
 118         int facility;                   /* syslog facility */
 119         enum logtypes type;             /* Type of log channel */
 120         FILE *fileptr;                  /* logfile logging file pointer */
 121         char filename[256];             /* Filename */
 122         AST_LIST_ENTRY(logchannel) list;
 123 };
 124
 125 static AST_RWLIST_HEAD_STATIC(logchannels, logchannel);
 126
 127 enum logmsgtypes {
 128         LOGMSG_NORMAL = 0,
 129         LOGMSG_VERBOSE,
 130 };
 131
 132 struct logmsg {
 133         enum logmsgtypes type;
 134         char date[256];
 135         int level;
 136         char file[80];
 137         int line;
 138         char function[80];
 139         long process_id;
 140         AST_LIST_ENTRY(logmsg) list;
 141         char str[0];
 142 };
 143
 144 static AST_LIST_HEAD_STATIC(logmsgs, logmsg);
 145 static pthread_t logthread = AST_PTHREADT_NULL;
 146 static ast_cond_t logcond;
 147 static int close_logger_thread;
 148
 149 static FILE *eventlog;
 150 static FILE *qlog;
 151
 152 /*! \brief Logging channels used in the Asterisk logging system */
 153 static char *levels[] = {
 154         "DEBUG",
 155         "EVENT",
 156         "NOTICE",
 157         "WARNING",
 158         "ERROR",
 159         "VERBOSE",
 160         "DTMF"
 161 };
 162
 163 /*! \brief Colors used in the console for logging */
 164 static int colors[] = {
 165         COLOR_BRGREEN,
 166         COLOR_BRBLUE,
 167         COLOR_YELLOW,
 168         COLOR_BRRED,
 169         COLOR_RED,
 170         COLOR_GREEN,
 171         COLOR_BRGREEN
 172 };
 173
 174 AST_THREADSTORAGE(verbose_buf);
 175 #define VERBOSE_BUF_INIT_SIZE   256
 176
 177 AST_THREADSTORAGE(log_buf);
 178 #define LOG_BUF_INIT_SIZE       256
 179
 180 static int make_components(const char *s, int lineno)
 181 {
 182         char *w;
 183         int res = 0;
 184         char *stringp = ast_strdupa(s);
 185
 186         while ((w = strsep(&stringp, ","))) {
 187                 w = ast_skip_blanks(w);
 188                 if (!strcasecmp(w, "error"))
 189                         res |= (1 << __LOG_ERROR);
 190                 else if (!strcasecmp(w, "warning"))
 191                         res |= (1 << __LOG_WARNING);
 192                 else if (!strcasecmp(w, "notice"))
 193                         res |= (1 << __LOG_NOTICE);
 194                 else if (!strcasecmp(w, "event"))
 195                         res |= (1 << __LOG_EVENT);
 196                 else if (!strcasecmp(w, "debug"))
 197                         res |= (1 << __LOG_DEBUG);
 198                 else if (!strcasecmp(w, "verbose"))
 199                         res |= (1 << __LOG_VERBOSE);
 200                 else if (!strcasecmp(w, "dtmf"))
 201                         res |= (1 << __LOG_DTMF);
 202                 else {
 203                         fprintf(stderr, "Logfile Warning: Unknown keyword '%s' at line %d of logger.conf\n", w, lineno);
 204                 }
 205         }
 206
 207         return res;
 208 }
 209
 210 static struct logchannel *make_logchannel(const char *channel, const char *components, int lineno)
 211 {
 212         struct logchannel *chan;
 213         char *facility;
 214 #ifndef SOLARIS
 215         CODE *cptr;
 216 #endif
 217
 218         if (ast_strlen_zero(channel) || !(chan = ast_calloc(1, sizeof(*chan))))
 219                 return NULL;
 220
 221         if (!strcasecmp(channel, "console")) {
 222                 chan->type = LOGTYPE_CONSOLE;
 223         } else if (!strncasecmp(channel, "syslog", 6)) {
 224                 /*
 225                 * syntax is:
 226                 *  syslog.facility => level,level,level
 227                 */
 228                 facility = strchr(channel, '.');
 229                 if (!facility++ || !facility) {
 230                         facility = "local0";
 231                 }
 232
 233 #ifndef SOLARIS
 234                 /*
 235                 * Walk through the list of facilitynames (defined in sys/syslog.h)
 236                 * to see if we can find the one we have been given
 237                 */
 238                 chan->facility = -1;
 239                 cptr = facilitynames;
 240                 while (cptr->c_name) {
 241                         if (!strcasecmp(facility, cptr->c_name)) {
 242                                 chan->facility = cptr->c_val;
 243                                 break;
 244                         }
 245                         cptr++;
 246                 }
 247 #else
 248                 chan->facility = -1;
 249                 if (!strcasecmp(facility, "kern"))
 250                         chan->facility = LOG_KERN;
 251                 else if (!strcasecmp(facility, "USER"))
 252                         chan->facility = LOG_USER;
 253                 else if (!strcasecmp(facility, "MAIL"))
 254                         chan->facility = LOG_MAIL;
 255                 else if (!strcasecmp(facility, "DAEMON"))
 256                         chan->facility = LOG_DAEMON;
 257                 else if (!strcasecmp(facility, "AUTH"))
 258                         chan->facility = LOG_AUTH;
 259                 else if (!strcasecmp(facility, "SYSLOG"))
 260                         chan->facility = LOG_SYSLOG;
 261                 else if (!strcasecmp(facility, "LPR"))
 262                         chan->facility = LOG_LPR;
 263                 else if (!strcasecmp(facility, "NEWS"))
 264                         chan->facility = LOG_NEWS;
 265                 else if (!strcasecmp(facility, "UUCP"))
 266                         chan->facility = LOG_UUCP;
 267                 else if (!strcasecmp(facility, "CRON"))
 268                         chan->facility = LOG_CRON;
 269                 else if (!strcasecmp(facility, "LOCAL0"))
 270                         chan->facility = LOG_LOCAL0;
 271                 else if (!strcasecmp(facility, "LOCAL1"))
 272                         chan->facility = LOG_LOCAL1;
 273                 else if (!strcasecmp(facility, "LOCAL2"))
 274                         chan->facility = LOG_LOCAL2;
 275                 else if (!strcasecmp(facility, "LOCAL3"))
 276                         chan->facility = LOG_LOCAL3;
 277                 else if (!strcasecmp(facility, "LOCAL4"))
 278                         chan->facility = LOG_LOCAL4;
 279                 else if (!strcasecmp(facility, "LOCAL5"))
 280                         chan->facility = LOG_LOCAL5;
 281                 else if (!strcasecmp(facility, "LOCAL6"))
 282                         chan->facility = LOG_LOCAL6;
 283                 else if (!strcasecmp(facility, "LOCAL7"))
 284                         chan->facility = LOG_LOCAL7;
 285 #endif /* Solaris */
 286
 287                 if (0 > chan->facility) {
 288                         fprintf(stderr, "Logger Warning: bad syslog facility in logger.conf\n");
 289                         ast_free(chan);
 290                         return NULL;
 291                 }
 292
 293                 chan->type = LOGTYPE_SYSLOG;
 294                 snprintf(chan->filename, sizeof(chan->filename), "%s", channel);
 295                 openlog("asterisk", LOG_PID, chan->facility);
 296         } else {
 297                 if (channel[0] == '/') {
 298                         if (!ast_strlen_zero(hostname)) {
 299                                 snprintf(chan->filename, sizeof(chan->filename), "%s.%s", channel, hostname);
 300                         } else {
 301                                 ast_copy_string(chan->filename, channel, sizeof(chan->filename));
 302                         }
 303                 }
 304
 305                 if (!ast_strlen_zero(hostname)) {
 306                         snprintf(chan->filename, sizeof(chan->filename), "%s/%s.%s", ast_config_AST_LOG_DIR, channel, hostname);
 307                 } else {
 308                         snprintf(chan->filename, sizeof(chan->filename), "%s/%s", ast_config_AST_LOG_DIR, channel);
 309                 }
 310                 chan->fileptr = fopen(chan->filename, "a");
 311                 if (!chan->fileptr) {
 312                         /* Can't log here, since we're called with a lock */
 313                         fprintf(stderr, "Logger Warning: Unable to open log file '%s': %s\n", chan->filename, strerror(errno));
 314                 }
 315                 chan->type = LOGTYPE_FILE;
 316         }
 317         chan->logmask = make_components(components, lineno);
 318         return chan;
 319 }
 320
 321 static void init_logger_chain(int locked)
 322 {
 323         struct logchannel *chan;
 324         struct ast_config *cfg;
 325         struct ast_variable *var;
 326         const char *s;
 327         struct ast_flags config_flags = { 0 };
 328
 329         if (!(cfg = ast_config_load2("logger.conf", "logger", config_flags)) || cfg == CONFIG_STATUS_FILEINVALID)
 330                 return;
 331
 332         /* delete our list of log channels */
 333         if (!locked)
 334                 AST_RWLIST_WRLOCK(&logchannels);
 335         while ((chan = AST_RWLIST_REMOVE_HEAD(&logchannels, list)))
 336                 ast_free(chan);
 337         if (!locked)
 338                 AST_RWLIST_UNLOCK(&logchannels);
 339
 340         global_logmask = 0;
 341         errno = 0;
 342         /* close syslog */
 343         closelog();
 344
 345         /* If no config file, we're fine, set default options. */
 346         if (!cfg) {
 347                 if (errno)
 348                         fprintf(stderr, "Unable to open logger.conf: %s; default settings will be used.\n", strerror(errno));
 349                 else
 350                         fprintf(stderr, "Errors detected in logger.conf: see above; default settings will be used.\n");
 351                 if (!(chan = ast_calloc(1, sizeof(*chan))))
 352                         return;
 353                 chan->type = LOGTYPE_CONSOLE;
 354                 chan->logmask = 28; /*warning,notice,error */
 355                 if (!locked)
 356                         AST_RWLIST_WRLOCK(&logchannels);
 357                 AST_RWLIST_INSERT_HEAD(&logchannels, chan, list);
 358                 if (!locked)
 359                         AST_RWLIST_UNLOCK(&logchannels);
 360                 global_logmask |= chan->logmask;
 361                 return;
 362         }
 363
 364         if ((s = ast_variable_retrieve(cfg, "general", "appendhostname"))) {
 365                 if (ast_true(s)) {
 366                         if (gethostname(hostname, sizeof(hostname) - 1)) {
 367                                 ast_copy_string(hostname, "unknown", sizeof(hostname));
 368                                 fprintf(stderr, "What box has no hostname???\n");
 369                         }
 370                 } else
 371                         hostname[0] = '\0';
 372         } else
 373                 hostname[0] = '\0';
 374         if ((s = ast_variable_retrieve(cfg, "general", "dateformat")))
 375                 ast_copy_string(dateformat, s, sizeof(dateformat));
 376         else
 377                 ast_copy_string(dateformat, "%b %e %T", sizeof(dateformat));
 378         if ((s = ast_variable_retrieve(cfg, "general", "queue_log")))
 379                 logfiles.queue_log = ast_true(s);
 380         if ((s = ast_variable_retrieve(cfg, "general", "event_log")))
 381                 logfiles.event_log = ast_true(s);
 382         if ((s = ast_variable_retrieve(cfg, "general", "queue_log_name")))
 383                 ast_copy_string(queue_log_name, s, sizeof(queue_log_name));
 384         if ((s = ast_variable_retrieve(cfg, "general", "exec_after_rotate")))
 385                 ast_copy_string(exec_after_rotate, s, sizeof(exec_after_rotate));
 386         if ((s = ast_variable_retrieve(cfg, "general", "rotatestrategy"))) {
 387                 if (strcasecmp(s, "timestamp") == 0)
 388                         rotatestrategy = TIMESTAMP;
 389                 else if (strcasecmp(s, "rotate") == 0)
 390                         rotatestrategy = ROTATE;
 391                 else if (strcasecmp(s, "sequential") == 0)
 392                         rotatestrategy = SEQUENTIAL;
 393                 else
 394                         fprintf(stderr, "Unknown rotatestrategy: %s\n", s);
 395         } else {
 396                 if ((s = ast_variable_retrieve(cfg, "general", "rotatetimestamp"))) {
 397                         rotatestrategy = ast_true(s) ? TIMESTAMP : SEQUENTIAL;
 398                         fprintf(stderr, "rotatetimestamp option has been deprecated.  Please use rotatestrategy instead.\n");
 399                 }
 400         }
 401
 402         if (!locked)
 403                 AST_RWLIST_WRLOCK(&logchannels);
 404         var = ast_variable_browse(cfg, "logfiles");
 405         for (; var; var = var->next) {
 406                 if (!(chan = make_logchannel(var->name, var->value, var->lineno)))
 407                         continue;
 408                 AST_RWLIST_INSERT_HEAD(&logchannels, chan, list);
 409                 global_logmask |= chan->logmask;
 410         }
 411         if (!locked)
 412                 AST_RWLIST_UNLOCK(&logchannels);
 413
 414         ast_config_destroy(cfg);
 415 }
 416
 417 void ast_child_verbose(int level, const char *fmt, ...)
 418 {
 419         char *msg = NULL, *emsg = NULL, *sptr, *eptr;
 420         va_list ap, aq;
 421         int size;
 422
 423         /* Don't bother, if the level isn't that high */
 424         if (option_verbose < level) {
 425                 return;
 426         }
 427
 428         va_start(ap, fmt);
 429         va_copy(aq, ap);
 430         if ((size = vsnprintf(msg, 0, fmt, ap)) < 0) {
 431                 va_end(ap);
 432                 va_end(aq);
 433                 return;
 434         }
 435         va_end(ap);
 436
 437         if (!(msg = ast_malloc(size + 1))) {
 438                 va_end(aq);
 439                 return;
 440         }
 441
 442         vsnprintf(msg, size + 1, fmt, aq);
 443         va_end(aq);
 444
 445         if (!(emsg = ast_malloc(size * 2 + 1))) {
 446                 ast_free(msg);
 447                 return;
 448         }
 449
 450         for (sptr = msg, eptr = emsg; ; sptr++) {
 451                 if (*sptr == '"') {
 452                         *eptr++ = '\\';
 453                 }
 454                 *eptr++ = *sptr;
 455                 if (*sptr == '\0') {
 456                         break;
 457                 }
 458         }
 459         ast_free(msg);
 460
 461         fprintf(stdout, "verbose \"%s\" %d\n", emsg, level);
 462         fflush(stdout);
 463         ast_free(emsg);
 464 }
 465
 466 void ast_queue_log(const char *queuename, const char *callid, const char *agent, const char *event, const char *fmt, ...)
 467 {
 468         va_list ap;
 469         char qlog_msg[8192];
 470         int qlog_len;
 471         char time_str[16];
 472
 473         if (ast_check_realtime("queue_log")) {
 474                 va_start(ap, fmt);
 475                 vsnprintf(qlog_msg, sizeof(qlog_msg), fmt, ap);
 476                 va_end(ap);
 477                 snprintf(time_str, sizeof(time_str), "%ld", (long)time(NULL));
 478                 ast_store_realtime("queue_log", "time", time_str,
 479                                                 "callid", callid,
 480                                                 "queuename", queuename,
 481                                                 "agent", agent,
 482                                                 "event", event,
 483                                                 "data", qlog_msg,
 484                                                 SENTINEL);
 485         } else {
 486                 if (qlog) {
 487                         va_start(ap, fmt);
 488                         qlog_len = snprintf(qlog_msg, sizeof(qlog_msg), "%ld|%s|%s|%s|%s|", (long)time(NULL), callid, queuename, agent, event);
 489                         vsnprintf(qlog_msg + qlog_len, sizeof(qlog_msg) - qlog_len, fmt, ap);
 490                         va_end(ap);
 491                 }
 492                 AST_RWLIST_RDLOCK(&logchannels);
 493                 if (qlog) {
 494                         fprintf(qlog, "%s\n", qlog_msg);
 495                         fflush(qlog);
 496                 }
 497                 AST_RWLIST_UNLOCK(&logchannels);
 498         }
 499 }
 500
 501 static int rotate_file(const char *filename)
 502 {
 503         char old[PATH_MAX];
 504         char new[PATH_MAX];
 505         int x, y, which, found, res = 0, fd;
 506         char *suffixes[4] = { "", ".gz", ".bz2", ".Z" };
 507
 508         switch (rotatestrategy) {
 509         case SEQUENTIAL:
 510                 for (x = 0; ; x++) {
 511                         snprintf(new, sizeof(new), "%s.%d", filename, x);
 512                         fd = open(new, O_RDONLY);
 513                         if (fd > -1)
 514                                 close(fd);
 515                         else
 516                                 break;
 517                 }
 518                 if (rename(filename, new)) {
 519                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", filename, new);
 520                         res = -1;
 521                 }
 522                 break;
 523         case TIMESTAMP:
 524                 snprintf(new, sizeof(new), "%s.%ld", filename, (long)time(NULL));
 525                 if (rename(filename, new)) {
 526                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", filename, new);
 527                         res = -1;
 528                 }
 529                 break;
 530         case ROTATE:
 531                 /* Find the next empty slot, including a possible suffix */
 532                 for (x = 0; ; x++) {
 533                         found = 0;
 534                         for (which = 0; which < ARRAY_LEN(suffixes); which++) {
 535                                 snprintf(new, sizeof(new), "%s.%d%s", filename, x, suffixes[which]);
 536                                 fd = open(new, O_RDONLY);
 537                                 if (fd > -1) {
 538                                         close(fd);
 539                                         found = 1;
 540                                         break;
 541                                 }
 542                         }
 543                         if (!found) {
 544                                 break;
 545                         }
 546                 }
 547
 548                 /* Found an empty slot */
 549                 for (y = x; y > 0; y--) {
 550                         for (which = 0; which < ARRAY_LEN(suffixes); which++) {
 551                                 snprintf(old, sizeof(old), "%s.%d%s", filename, y - 1, suffixes[which]);
 552                                 fd = open(old, O_RDONLY);
 553                                 if (fd > -1) {
 554                                         /* Found the right suffix */
 555                                         close(fd);
 556                                         snprintf(new, sizeof(new), "%s.%d%s", filename, y, suffixes[which]);
 557                                         if (rename(old, new)) {
 558                                                 fprintf(stderr, "Unable to rename file '%s' to '%s'\n", old, new);
 559                                                 res = -1;
 560                                         }
 561                                         break;
 562                                 }
 563                         }
 564                 }
 565
 566                 /* Finally, rename the current file */
 567                 snprintf(new, sizeof(new), "%s.0", filename);
 568                 if (rename(filename, new)) {
 569                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", filename, new);
 570                         res = -1;
 571                 }
 572         }
 573
 574         if (!ast_strlen_zero(exec_after_rotate)) {
 575                 struct ast_channel *c = ast_channel_alloc(0, 0, "", "", "", "", "", 0, "Logger/rotate");
 576                 char buf[512];
 577                 pbx_builtin_setvar_helper(c, "filename", filename);
 578                 pbx_substitute_variables_helper(c, exec_after_rotate, buf, sizeof(buf));
 579                 if (system(buf) < 0) {
 580                         ast_log(LOG_WARNING, "system() failed for '%s': %s\n", buf, strerror(errno));
 581                 }
 582                 ast_channel_free(c);
 583         }
 584         return res;
 585 }
 586
 587 static int reload_logger(int rotate)
 588 {
 589         char old[PATH_MAX] = "";
 590         int event_rotate = rotate, queue_rotate = rotate;
 591         struct logchannel *f;
 592         int res = 0;
 593         struct stat st;
 594
 595         AST_RWLIST_WRLOCK(&logchannels);
 596
 597         if (eventlog) {
 598                 if (rotate < 0) {
 599                         /* Check filesize - this one typically doesn't need an auto-rotate */
 600                         snprintf(old, sizeof(old), "%s/%s", ast_config_AST_LOG_DIR, EVENTLOG);
 601                         if (stat(old, &st) != 0 || st.st_size > 0x40000000) { /* Arbitrarily, 1 GB */
 602                                 fclose(eventlog);
 603                                 eventlog = NULL;
 604                         } else
 605                                 event_rotate = 0;
 606                 } else {
 607                         fclose(eventlog);
 608                         eventlog = NULL;
 609                 }
 610         } else
 611                 event_rotate = 0;
 612
 613         if (qlog) {
 614                 if (rotate < 0) {
 615                         /* Check filesize - this one typically doesn't need an auto-rotate */
 616                         snprintf(old, sizeof(old), "%s/%s", ast_config_AST_LOG_DIR, queue_log_name);
 617                         if (stat(old, &st) != 0 || st.st_size > 0x40000000) { /* Arbitrarily, 1 GB */
 618                                 fclose(qlog);
 619                                 qlog = NULL;
 620                         } else
 621                                 event_rotate = 0;
 622                 } else {
 623                         fclose(qlog);
 624                         qlog = NULL;
 625                 }
 626         } else
 627                 queue_rotate = 0;
 628         qlog = NULL;
 629
 630         ast_mkdir(ast_config_AST_LOG_DIR, 0777);
 631
 632         AST_RWLIST_TRAVERSE(&logchannels, f, list) {
 633                 if (f->disabled) {
 634                         f->disabled = 0;        /* Re-enable logging at reload */
 635                         manager_event(EVENT_FLAG_SYSTEM, "LogChannel", "Channel: %s\r\nEnabled: Yes\r\n", f->filename);
 636                 }
 637                 if (f->fileptr && (f->fileptr != stdout) && (f->fileptr != stderr)) {
 638                         fclose(f->fileptr);     /* Close file */
 639                         f->fileptr = NULL;
 640                         if (rotate)
 641                                 rotate_file(f->filename);
 642                 }
 643         }
 644
 645         filesize_reload_needed = 0;
 646
 647         init_logger_chain(1 /* locked */);
 648
 649         if (logfiles.event_log) {
 650                 snprintf(old, sizeof(old), "%s/%s", ast_config_AST_LOG_DIR, EVENTLOG);
 651                 if (event_rotate)
 652                         rotate_file(old);
 653
 654                 eventlog = fopen(old, "a");
 655                 if (eventlog) {
 656                         ast_log(LOG_EVENT, "Restarted Asterisk Event Logger\n");
 657                         ast_verb(1, "Asterisk Event Logger restarted\n");
 658                 } else {
 659                         ast_log(LOG_ERROR, "Unable to create event log: %s\n", strerror(errno));
 660                         res = -1;
 661                 }
 662         }
 663
 664         if (logfiles.queue_log) {
 665                 snprintf(old, sizeof(old), "%s/%s", ast_config_AST_LOG_DIR, queue_log_name);
 666                 if (queue_rotate)
 667                         rotate_file(old);
 668
 669                 qlog = fopen(old, "a");
 670                 if (qlog) {
 671                         AST_RWLIST_UNLOCK(&logchannels);
 672                         ast_queue_log("NONE", "NONE", "NONE", "CONFIGRELOAD", "%s", "");
 673                         AST_RWLIST_WRLOCK(&logchannels);
 674                         ast_log(LOG_EVENT, "Restarted Asterisk Queue Logger\n");
 675                         ast_verb(1, "Asterisk Queue Logger restarted\n");
 676                 } else {
 677                         ast_log(LOG_ERROR, "Unable to create queue log: %s\n", strerror(errno));
 678                         res = -1;
 679                 }
 680         }
 681
 682         AST_RWLIST_UNLOCK(&logchannels);
 683
 684         return res;
 685 }
 686
 687 /*! \brief Reload the logger module without rotating log files (also used from loader.c during
 688         a full Asterisk reload) */
 689 int logger_reload(void)
 690 {
 691         if(reload_logger(0))
 692                 return RESULT_FAILURE;
 693         return RESULT_SUCCESS;
 694 }
 695
 696 static char *handle_logger_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 697 {
 698         switch (cmd) {
 699         case CLI_INIT:
 700                 e->command = "logger reload";
 701                 e->usage =
 702                         "Usage: logger reload\n"
 703                         "       Reloads the logger subsystem state.  Use after restarting syslogd(8) if you are using syslog logging.\n";
 704                 return NULL;
 705         case CLI_GENERATE:
 706                 return NULL;
 707         }
 708         if (reload_logger(0)) {
 709                 ast_cli(a->fd, "Failed to reload the logger\n");
 710                 return CLI_FAILURE;
 711         }
 712         return CLI_SUCCESS;
 713 }
 714
 715 static char *handle_logger_rotate(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 716 {
 717         switch (cmd) {
 718         case CLI_INIT:
 719                 e->command = "logger rotate";
 720                 e->usage =
 721                         "Usage: logger rotate\n"
 722                         "       Rotates and Reopens the log files.\n";
 723                 return NULL;
 724         case CLI_GENERATE:
 725                 return NULL;
 726         }
 727         if (reload_logger(1)) {
 728                 ast_cli(a->fd, "Failed to reload the logger and rotate log files\n");
 729                 return CLI_FAILURE;
 730         }
 731         return CLI_SUCCESS;
 732 }
 733
 734 static char *handle_logger_set_level(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 735 {
 736         int x;
 737         int state;
 738         int level = -1;
 739
 740         switch (cmd) {
 741         case CLI_INIT:
 742                 e->command = "logger set level";
 743                 e->usage =
 744                         "Usage: logger set level\n"
 745                         "       Set a specific log level to enabled/disabled for this console.\n";
 746                 return NULL;
 747         case CLI_GENERATE:
 748                 return NULL;
 749         }
 750
 751         if (a->argc < 5)
 752                 return CLI_SHOWUSAGE;
 753
 754         for (x = 0; x <= NUMLOGLEVELS; x++) {
 755                 if (!strcasecmp(a->argv[3], levels[x])) {
 756                         level = x;
 757                         break;
 758                 }
 759         }
 760
 761         state = ast_true(a->argv[4]) ? 1 : 0;
 762
 763         if (level != -1) {
 764                 ast_console_toggle_loglevel(a->fd, level, state);
 765                 ast_cli(a->fd, "Logger status for '%s' has been set to '%s'.\n", levels[level], state ? "on" : "off");
 766         } else
 767                 return CLI_SHOWUSAGE;
 768
 769         return CLI_SUCCESS;
 770 }
 771
 772 /*! \brief CLI command to show logging system configuration */
 773 static char *handle_logger_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 774 {
 775 #define FORMATL "%-35.35s %-8.8s %-9.9s "
 776         struct logchannel *chan;
 777         switch (cmd) {
 778         case CLI_INIT:
 779                 e->command = "logger show channels";
 780                 e->usage =
 781                         "Usage: logger show channels\n"
 782                         "       List configured logger channels.\n";
 783                 return NULL;
 784         case CLI_GENERATE:
 785                 return NULL;
 786         }
 787         ast_cli(a->fd, FORMATL, "Channel", "Type", "Status");
 788         ast_cli(a->fd, "Configuration\n");
 789         ast_cli(a->fd, FORMATL, "-------", "----", "------");
 790         ast_cli(a->fd, "-------------\n");
 791         AST_RWLIST_RDLOCK(&logchannels);
 792         AST_RWLIST_TRAVERSE(&logchannels, chan, list) {
 793                 ast_cli(a->fd, FORMATL, chan->filename, chan->type == LOGTYPE_CONSOLE ? "Console" : (chan->type == LOGTYPE_SYSLOG ? "Syslog" : "File"),
 794                         chan->disabled ? "Disabled" : "Enabled");
 795                 ast_cli(a->fd, " - ");
 796                 if (chan->logmask & (1 << __LOG_DEBUG))
 797                         ast_cli(a->fd, "Debug ");
 798                 if (chan->logmask & (1 << __LOG_DTMF))
 799                         ast_cli(a->fd, "DTMF ");
 800                 if (chan->logmask & (1 << __LOG_VERBOSE))
 801                         ast_cli(a->fd, "Verbose ");
 802                 if (chan->logmask & (1 << __LOG_WARNING))
 803                         ast_cli(a->fd, "Warning ");
 804                 if (chan->logmask & (1 << __LOG_NOTICE))
 805                         ast_cli(a->fd, "Notice ");
 806                 if (chan->logmask & (1 << __LOG_ERROR))
 807                         ast_cli(a->fd, "Error ");
 808                 if (chan->logmask & (1 << __LOG_EVENT))
 809                         ast_cli(a->fd, "Event ");
 810                 ast_cli(a->fd, "\n");
 811         }
 812         AST_RWLIST_UNLOCK(&logchannels);
 813         ast_cli(a->fd, "\n");
 814
 815         return CLI_SUCCESS;
 816 }
 817
 818 struct verb {
 819         void (*verboser)(const char *string);
 820         AST_LIST_ENTRY(verb) list;
 821 };
 822
 823 static AST_RWLIST_HEAD_STATIC(verbosers, verb);
 824
 825 static struct ast_cli_entry cli_logger[] = {
 826         AST_CLI_DEFINE(handle_logger_show_channels, "List configured log channels"),
 827         AST_CLI_DEFINE(handle_logger_reload, "Reopens the log files"),
 828         AST_CLI_DEFINE(handle_logger_rotate, "Rotates and reopens the log files"),
 829         AST_CLI_DEFINE(handle_logger_set_level, "Enables/Disables a specific logging level for this console")
 830 };
 831
 832 static int handle_SIGXFSZ(int sig)
 833 {
 834         /* Indicate need to reload */
 835         filesize_reload_needed = 1;
 836         return 0;
 837 }
 838
 839 static void ast_log_vsyslog(int level, const char *file, int line, const char *function, char *str, long pid)
 840 {
 841         char buf[BUFSIZ];
 842
 843         if (level >= SYSLOG_NLEVELS) {
 844                 /* we are locked here, so cannot ast_log() */
 845                 fprintf(stderr, "ast_log_vsyslog called with bogus level: %d\n", level);
 846                 return;
 847         }
 848
 849         if (level == __LOG_VERBOSE) {
 850                 snprintf(buf, sizeof(buf), "VERBOSE[%ld]: %s", pid, str);
 851                 level = __LOG_DEBUG;
 852         } else if (level == __LOG_DTMF) {
 853                 snprintf(buf, sizeof(buf), "DTMF[%ld]: %s", pid, str);
 854                 level = __LOG_DEBUG;
 855         } else {
 856                 snprintf(buf, sizeof(buf), "%s[%ld]: %s:%d in %s: %s",
 857                          levels[level], pid, file, line, function, str);
 858         }
 859
 860         term_strip(buf, buf, strlen(buf) + 1);
 861         syslog(syslog_level_map[level], "%s", buf);
 862 }
 863
 864 /*! \brief Print a normal log message to the channels */
 865 static void logger_print_normal(struct logmsg *logmsg)
 866 {
 867         struct logchannel *chan = NULL;
 868         char buf[BUFSIZ];
 869
 870         AST_RWLIST_RDLOCK(&logchannels);
 871
 872         if (logfiles.event_log && logmsg->level == __LOG_EVENT) {
 873                 fprintf(eventlog, "%s asterisk[%ld]: %s", logmsg->date, (long)getpid(), logmsg->str);
 874                 fflush(eventlog);
 875                 AST_RWLIST_UNLOCK(&logchannels);
 876                 return;
 877         }
 878
 879         if (!AST_RWLIST_EMPTY(&logchannels)) {
 880                 AST_RWLIST_TRAVERSE(&logchannels, chan, list) {
 881                         /* If the channel is disabled, then move on to the next one */
 882                         if (chan->disabled)
 883                                 continue;
 884                         /* Check syslog channels */
 885                         if (chan->type == LOGTYPE_SYSLOG && (chan->logmask & (1 << logmsg->level))) {
 886                                 ast_log_vsyslog(logmsg->level, logmsg->file, logmsg->line, logmsg->function, logmsg->str, logmsg->process_id);
 887                         /* Console channels */
 888                         } else if (chan->type == LOGTYPE_CONSOLE && (chan->logmask & (1 << logmsg->level))) {
 889                                 char linestr[128];
 890                                 char tmp1[80], tmp2[80], tmp3[80], tmp4[80];
 891
 892                                 /* If the level is verbose, then skip it */
 893                                 if (logmsg->level == __LOG_VERBOSE)
 894                                         continue;
 895
 896                                 /* Turn the numerical line number into a string */
 897                                 snprintf(linestr, sizeof(linestr), "%d", logmsg->line);
 898                                 /* Build string to print out */
 899                                 snprintf(buf, sizeof(buf), "[%s] %s[%ld]: %s:%s %s: %s",
 900                                          logmsg->date,
 901                                          term_color(tmp1, levels[logmsg->level], colors[logmsg->level], 0, sizeof(tmp1)),
 902                                          logmsg->process_id,
 903                                          term_color(tmp2, logmsg->file, COLOR_BRWHITE, 0, sizeof(tmp2)),
 904                                          term_color(tmp3, linestr, COLOR_BRWHITE, 0, sizeof(tmp3)),
 905                                          term_color(tmp4, logmsg->function, COLOR_BRWHITE, 0, sizeof(tmp4)),
 906                                          logmsg->str);
 907                                 /* Print out */
 908                                 ast_console_puts_mutable(buf, logmsg->level);
 909                         /* File channels */
 910                         } else if (chan->type == LOGTYPE_FILE && (chan->logmask & (1 << logmsg->level))) {
 911                                 int res = 0;
 912
 913                                 /* If no file pointer exists, skip it */
 914                                 if (!chan->fileptr)
 915                                         continue;
 916
 917                                 /* Print out to the file */
 918                                 res = fprintf(chan->fileptr, "[%s] %s[%ld] %s: %s",
 919                                               logmsg->date, levels[logmsg->level], logmsg->process_id, logmsg->file, logmsg->str);
 920                                 if (res <= 0 && !ast_strlen_zero(logmsg->str)) {
 921                                         fprintf(stderr, "**** Asterisk Logging Error: ***********\n");
 922                                         if (errno == ENOMEM || errno == ENOSPC)
 923                                                 fprintf(stderr, "Asterisk logging error: Out of disk space, can't log to log file %s\n", chan->filename);
 924                                         else
 925                                                 fprintf(stderr, "Logger Warning: Unable to write to log file '%s': %s (disabled)\n", chan->filename, strerror(errno));
 926                                         manager_event(EVENT_FLAG_SYSTEM, "LogChannel", "Channel: %s\r\nEnabled: No\r\nReason: %d - %s\r\n", chan->filename, errno, strerror(errno));
 927                                         chan->disabled = 1;
 928                                 } else if (res > 0) {
 929                                         fflush(chan->fileptr);
 930                                 }
 931                         }
 932                 }
 933         } else if (logmsg->level != __LOG_VERBOSE) {
 934                 fputs(logmsg->str, stdout);
 935         }
 936
 937         AST_RWLIST_UNLOCK(&logchannels);
 938
 939         /* If we need to reload because of the file size, then do so */
 940         if (filesize_reload_needed) {
 941                 reload_logger(-1);
 942                 ast_log(LOG_EVENT, "Rotated Logs Per SIGXFSZ (Exceeded file size limit)\n");
 943                 ast_verb(1, "Rotated Logs Per SIGXFSZ (Exceeded file size limit)\n");
 944         }
 945
 946         return;
 947 }
 948
 949 /*! \brief Print a verbose message to the verbosers */
 950 static void logger_print_verbose(struct logmsg *logmsg)
 951 {
 952         struct verb *v = NULL;
 953
 954         /* Iterate through the list of verbosers and pass them the log message string */
 955         AST_RWLIST_RDLOCK(&verbosers);
 956         AST_RWLIST_TRAVERSE(&verbosers, v, list)
 957                 v->verboser(logmsg->str);
 958         AST_RWLIST_UNLOCK(&verbosers);
 959
 960         return;
 961 }
 962
 963 /*! \brief Actual logging thread */
 964 static void *logger_thread(void *data)
 965 {
 966         struct logmsg *next = NULL, *msg = NULL;
 967
 968         for (;;) {
 969                 /* We lock the message list, and see if any message exists... if not we wait on the condition to be signalled */
 970                 AST_LIST_LOCK(&logmsgs);
 971                 if (AST_LIST_EMPTY(&logmsgs))
 972                         ast_cond_wait(&logcond, &logmsgs.lock);
 973                 next = AST_LIST_FIRST(&logmsgs);
 974                 AST_LIST_HEAD_INIT_NOLOCK(&logmsgs);
 975                 AST_LIST_UNLOCK(&logmsgs);
 976
 977                 /* Otherwise go through and process each message in the order added */
 978                 while ((msg = next)) {
 979                         /* Get the next entry now so that we can free our current structure later */
 980                         next = AST_LIST_NEXT(msg, list);
 981
 982                         /* Depending on the type, send it to the proper function */
 983                         if (msg->type == LOGMSG_NORMAL)
 984                                 logger_print_normal(msg);
 985                         else if (msg->type == LOGMSG_VERBOSE)
 986                                 logger_print_verbose(msg);
 987
 988                         /* Free the data since we are done */
 989                         ast_free(msg);
 990                 }
 991
 992                 /* If we should stop, then stop */
 993                 if (close_logger_thread)
 994                         break;
 995         }
 996
 997         return NULL;
 998 }
 999
1000 int init_logger(void)
1001 {
1002         char tmp[256];
1003         int res = 0;
1004
1005         /* auto rotate if sig SIGXFSZ comes a-knockin */
1006         (void) signal(SIGXFSZ, (void *) handle_SIGXFSZ);
1007
1008         /* start logger thread */
1009         ast_cond_init(&logcond, NULL);
1010         if (ast_pthread_create(&logthread, NULL, logger_thread, NULL) < 0) {
1011                 ast_cond_destroy(&logcond);
1012                 return -1;
1013         }
1014
1015         /* register the logger cli commands */
1016         ast_cli_register_multiple(cli_logger, sizeof(cli_logger) / sizeof(struct ast_cli_entry));
1017
1018         ast_mkdir(ast_config_AST_LOG_DIR, 0777);
1019
1020         /* create log channels */
1021         init_logger_chain(0 /* locked */);
1022
1023         /* create the eventlog */
1024         if (logfiles.event_log) {
1025                 snprintf(tmp, sizeof(tmp), "%s/%s", ast_config_AST_LOG_DIR, EVENTLOG);
1026                 eventlog = fopen(tmp, "a");
1027                 if (eventlog) {
1028                         ast_log(LOG_EVENT, "Started Asterisk Event Logger\n");
1029                         ast_verb(1, "Asterisk Event Logger Started %s\n", tmp);
1030                 } else {
1031                         ast_log(LOG_ERROR, "Unable to create event log: %s\n", strerror(errno));
1032                         res = -1;
1033                 }
1034         }
1035
1036         if (logfiles.queue_log) {
1037                 snprintf(tmp, sizeof(tmp), "%s/%s", ast_config_AST_LOG_DIR, queue_log_name);
1038                 qlog = fopen(tmp, "a");
1039                 ast_queue_log("NONE", "NONE", "NONE", "QUEUESTART", "%s", "");
1040         }
1041         return res;
1042 }
1043
1044 void close_logger(void)
1045 {
1046         struct logchannel *f = NULL;
1047
1048         /* Stop logger thread */
1049         AST_LIST_LOCK(&logmsgs);
1050         close_logger_thread = 1;
1051         ast_cond_signal(&logcond);
1052         AST_LIST_UNLOCK(&logmsgs);
1053
1054         if (logthread != AST_PTHREADT_NULL)
1055                 pthread_join(logthread, NULL);
1056
1057         AST_RWLIST_WRLOCK(&logchannels);
1058
1059         if (eventlog) {
1060                 fclose(eventlog);
1061                 eventlog = NULL;
1062         }
1063
1064         if (qlog) {
1065                 fclose(qlog);
1066                 qlog = NULL;
1067         }
1068
1069         AST_RWLIST_TRAVERSE(&logchannels, f, list) {
1070                 if (f->fileptr && (f->fileptr != stdout) && (f->fileptr != stderr)) {
1071                         fclose(f->fileptr);
1072                         f->fileptr = NULL;
1073                 }
1074         }
1075
1076         closelog(); /* syslog */
1077
1078         AST_RWLIST_UNLOCK(&logchannels);
1079
1080         return;
1081 }
1082
1083 /*!
1084  * \brief send log messages to syslog and/or the console
1085  */
1086 void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
1087 {
1088         struct logmsg *logmsg = NULL;
1089         struct ast_str *buf = NULL;
1090         struct ast_tm tm;
1091         struct timeval now = ast_tvnow();
1092         int res = 0;
1093         va_list ap;
1094
1095         if (!(buf = ast_str_thread_get(&log_buf, LOG_BUF_INIT_SIZE)))
1096                 return;
1097
1098         if (AST_RWLIST_EMPTY(&logchannels)) {
1099                 /*
1100                  * we don't have the logger chain configured yet,
1101                  * so just log to stdout
1102                  */
1103                 if (level != __LOG_VERBOSE) {
1104                         int result;
1105                         va_start(ap, fmt);
1106                         result = ast_str_set_va(&buf, BUFSIZ, fmt, ap); /* XXX BUFSIZ ? */
1107                         va_end(ap);
1108                         if (result != AST_DYNSTR_BUILD_FAILED) {
1109                                 term_filter_escapes(buf->str);
1110                                 fputs(buf->str, stdout);
1111                         }
1112                 }
1113                 return;
1114         }
1115
1116         /* don't display LOG_DEBUG messages unless option_verbose _or_ option_debug
1117            are non-zero; LOG_DEBUG messages can still be displayed if option_debug
1118            is zero, if option_verbose is non-zero (this allows for 'level zero'
1119            LOG_DEBUG messages to be displayed, if the logmask on any channel
1120            allows it)
1121         */
1122         if (!option_verbose && !option_debug && (level == __LOG_DEBUG))
1123                 return;
1124
1125         /* Ignore anything that never gets logged anywhere */
1126         if (!(global_logmask & (1 << level)))
1127                 return;
1128
1129         /* Build string */
1130         va_start(ap, fmt);
1131         res = ast_str_set_va(&buf, BUFSIZ, fmt, ap);
1132         va_end(ap);
1133
1134         /* If the build failed, then abort and free this structure */
1135         if (res == AST_DYNSTR_BUILD_FAILED)
1136                 return;
1137
1138         /* Create a new logging message */
1139         if (!(logmsg = ast_calloc(1, sizeof(*logmsg) + res + 1)))
1140                 return;
1141
1142         /* Copy string over */
1143         strcpy(logmsg->str, buf->str);
1144
1145         /* Set type to be normal */
1146         logmsg->type = LOGMSG_NORMAL;
1147
1148         /* Create our date/time */
1149         ast_localtime(&now, &tm, NULL);
1150         ast_strftime(logmsg->date, sizeof(logmsg->date), dateformat, &tm);
1151
1152         /* Copy over data */
1153         logmsg->level = level;
1154         logmsg->line = line;
1155         ast_copy_string(logmsg->file, file, sizeof(logmsg->file));
1156         ast_copy_string(logmsg->function, function, sizeof(logmsg->function));
1157         logmsg->process_id = (long) GETTID();
1158
1159         /* If the logger thread is active, append it to the tail end of the list - otherwise skip that step */
1160         if (logthread != AST_PTHREADT_NULL) {
1161                 AST_LIST_LOCK(&logmsgs);
1162                 AST_LIST_INSERT_TAIL(&logmsgs, logmsg, list);
1163                 ast_cond_signal(&logcond);
1164                 AST_LIST_UNLOCK(&logmsgs);
1165         } else {
1166                 logger_print_normal(logmsg);
1167                 ast_free(logmsg);
1168         }
1169
1170         return;
1171 }
1172
1173 #ifdef HAVE_BKTR
1174
1175 struct ast_bt *ast_bt_create(void)
1176 {
1177         struct ast_bt *bt = ast_calloc(1, sizeof(*bt));
1178         if (!bt) {
1179                 ast_log(LOG_ERROR, "Unable to allocate memory for backtrace structure!\n");
1180                 return NULL;
1181         }
1182
1183         bt->alloced = 1;
1184
1185         ast_bt_get_addresses(bt);
1186
1187         return bt;
1188 }
1189
1190 int ast_bt_get_addresses(struct ast_bt *bt)
1191 {
1192         bt->num_frames = backtrace(bt->addresses, AST_MAX_BT_FRAMES);
1193
1194         return 0;
1195 }
1196
1197 void *ast_bt_destroy(struct ast_bt *bt)
1198 {
1199         if (bt->alloced) {
1200                 ast_free(bt);
1201         }
1202
1203         return NULL;
1204 }
1205
1206 #endif /* HAVE_BKTR */
1207
1208 void ast_backtrace(void)
1209 {
1210 #ifdef HAVE_BKTR
1211         struct ast_bt *bt;
1212         int i = 0;
1213         char **strings;
1214
1215         if (!(bt = ast_bt_create())) {
1216                 ast_log(LOG_WARNING, "Unable to allocate space for backtrace structure\n");
1217                 return;
1218         }
1219
1220         if ((strings = backtrace_symbols(bt->addresses, bt->num_frames))) {
1221                 ast_debug(1, "Got %d backtrace record%c\n", bt->num_frames, bt->num_frames != 1 ? 's' : ' ');
1222                 for (i = 0; i < bt->num_frames; i++) {
1223                         ast_log(LOG_DEBUG, "#%d: [%p] %s\n", i, bt->addresses[i], strings[i]);
1224                 }
1225                 free(strings);
1226         } else {
1227                 ast_debug(1, "Could not allocate memory for backtrace\n");
1228         }
1229         ast_bt_destroy(bt);
1230 #else
1231         ast_log(LOG_WARNING, "Must run configure with '--with-execinfo' for stack backtraces.\n");
1232 #endif
1233 }
1234
1235 void __ast_verbose_ap(const char *file, int line, const char *func, const char *fmt, va_list ap)
1236 {
1237         struct logmsg *logmsg = NULL;
1238         struct ast_str *buf = NULL;
1239         int res = 0;
1240
1241         if (!(buf = ast_str_thread_get(&verbose_buf, VERBOSE_BUF_INIT_SIZE)))
1242                 return;
1243
1244         if (ast_opt_timestamp) {
1245                 struct timeval now;
1246                 struct ast_tm tm;
1247                 char date[40];
1248                 char *datefmt;
1249
1250                 now = ast_tvnow();
1251                 ast_localtime(&now, &tm, NULL);
1252                 ast_strftime(date, sizeof(date), dateformat, &tm);
1253                 datefmt = alloca(strlen(date) + 3 + strlen(fmt) + 1);
1254                 sprintf(datefmt, "%c[%s] %s", 127, date, fmt);
1255                 fmt = datefmt;
1256         } else {
1257                 char *tmp = alloca(strlen(fmt) + 2);
1258                 sprintf(tmp, "%c%s", 127, fmt);
1259                 fmt = tmp;
1260         }
1261
1262         /* Build string */
1263         res = ast_str_set_va(&buf, 0, fmt, ap);
1264
1265         /* If the build failed then we can drop this allocated message */
1266         if (res == AST_DYNSTR_BUILD_FAILED)
1267                 return;
1268
1269         if (!(logmsg = ast_calloc(1, sizeof(*logmsg) + res + 1)))
1270                 return;
1271
1272         strcpy(logmsg->str, buf->str);
1273
1274         ast_log(__LOG_VERBOSE, file, line, func, "%s", logmsg->str + 1);
1275
1276         /* Set type */
1277         logmsg->type = LOGMSG_VERBOSE;
1278
1279         /* Add to the list and poke the thread if possible */
1280         if (logthread != AST_PTHREADT_NULL) {
1281                 AST_LIST_LOCK(&logmsgs);
1282                 AST_LIST_INSERT_TAIL(&logmsgs, logmsg, list);
1283                 ast_cond_signal(&logcond);
1284                 AST_LIST_UNLOCK(&logmsgs);
1285         } else {
1286                 logger_print_verbose(logmsg);
1287                 ast_free(logmsg);
1288         }
1289 }
1290
1291 void __ast_verbose(const char *file, int line, const char *func, const char *fmt, ...)
1292 {
1293         va_list ap;
1294         va_start(ap, fmt);
1295         __ast_verbose_ap(file, line, func, fmt, ap);
1296         va_end(ap);
1297 }
1298
1299 /* No new code should use this directly, but we have the ABI for backwards compat */
1300 #undef ast_verbose
1301 void ast_verbose(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
1302 void ast_verbose(const char *fmt, ...)
1303 {
1304         va_list ap;
1305         va_start(ap, fmt);
1306         __ast_verbose_ap("", 0, "", fmt, ap);
1307         va_end(ap);
1308 }
1309
1310 int ast_register_verbose(void (*v)(const char *string))
1311 {
1312         struct verb *verb;
1313
1314         if (!(verb = ast_malloc(sizeof(*verb))))
1315                 return -1;
1316
1317         verb->verboser = v;
1318
1319         AST_RWLIST_WRLOCK(&verbosers);
1320         AST_RWLIST_INSERT_HEAD(&verbosers, verb, list);
1321         AST_RWLIST_UNLOCK(&verbosers);
1322
1323         return 0;
1324 }
1325
1326 int ast_unregister_verbose(void (*v)(const char *string))
1327 {
1328         struct verb *cur;
1329
1330         AST_RWLIST_WRLOCK(&verbosers);
1331         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&verbosers, cur, list) {
1332                 if (cur->verboser == v) {
1333                         AST_RWLIST_REMOVE_CURRENT(list);
1334                         ast_free(cur);
1335                         break;
1336                 }
1337         }
1338         AST_RWLIST_TRAVERSE_SAFE_END;
1339         AST_RWLIST_UNLOCK(&verbosers);
1340
1341         return cur ? 0 : -1;
1342 }