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 /*
  39  * WARNING: additional #include directives should NOT be placed here, they
  40  * should be placed AFTER '#undef _ASTERISK_LOGGER_H' below
  41  */
  42 #include "asterisk/_private.h"
  43 #include "asterisk/paths.h"     /* use ast_config_AST_LOG_DIR */
  44 #include <signal.h>
  45 #include <time.h>
  46 #include <sys/stat.h>
  47 #include <fcntl.h>
  48 #ifdef HAVE_BKTR
  49 #include <execinfo.h>
  50 #define MAX_BACKTRACE_FRAMES 20
  51 #endif
  52
  53 #define SYSLOG_NAMES /* so we can map syslog facilities names to their numeric values,
  54                         from <syslog.h> which is included by logger.h */
  55 #include <syslog.h>
  56
  57 static int syslog_level_map[] = {
  58         LOG_DEBUG,
  59         LOG_INFO,    /* arbitrary equivalent of LOG_EVENT */
  60         LOG_NOTICE,
  61         LOG_WARNING,
  62         LOG_ERR,
  63         LOG_DEBUG,
  64         LOG_DEBUG
  65 };
  66
  67 #define SYSLOG_NLEVELS sizeof(syslog_level_map) / sizeof(int)
  68
  69 #undef _ASTERISK_LOGGER_H       /* now include logger.h */
  70 #include "asterisk/logger.h"
  71 #include "asterisk/lock.h"
  72 #include "asterisk/channel.h"
  73 #include "asterisk/config.h"
  74 #include "asterisk/term.h"
  75 #include "asterisk/cli.h"
  76 #include "asterisk/utils.h"
  77 #include "asterisk/manager.h"
  78 #include "asterisk/threadstorage.h"
  79 #include "asterisk/strings.h"
  80 #include "asterisk/pbx.h"
  81 #include "asterisk/app.h"
  82
  83 #if defined(__linux__) && !defined(__NR_gettid)
  84 #include <asm/unistd.h>
  85 #endif
  86
  87 #if defined(__linux__) && defined(__NR_gettid)
  88 #define GETTID() syscall(__NR_gettid)
  89 #else
  90 #define GETTID() getpid()
  91 #endif
  92
  93 static char dateformat[256] = "%b %e %T";               /* Original Asterisk Format */
  94
  95 static char queue_log_name[256] = QUEUELOG;
  96 static char exec_after_rotate[256] = "";
  97
  98 static int filesize_reload_needed;
  99 static int global_logmask = -1;
 100
 101 enum rotatestrategy {
 102         SEQUENTIAL = 1 << 0,     /* Original method - create a new file, in order */
 103         ROTATE = 1 << 1,         /* Rotate all files, such that the oldest file has the highest suffix */
 104         TIMESTAMP = 1 << 2,      /* Append the epoch timestamp onto the end of the archived file */
 105 } rotatestrategy = SEQUENTIAL;
 106
 107 static struct {
 108         unsigned int queue_log:1;
 109         unsigned int event_log:1;
 110 } logfiles = { 1, 1 };
 111
 112 static char hostname[MAXHOSTNAMELEN];
 113
 114 enum logtypes {
 115         LOGTYPE_SYSLOG,
 116         LOGTYPE_FILE,
 117         LOGTYPE_CONSOLE,
 118 };
 119
 120 struct logchannel {
 121         int logmask;                    /* What to log to this channel */
 122         int disabled;                   /* If this channel is disabled or not */
 123         int facility;                   /* syslog facility */
 124         enum logtypes type;             /* Type of log channel */
 125         FILE *fileptr;                  /* logfile logging file pointer */
 126         char filename[256];             /* Filename */
 127         AST_LIST_ENTRY(logchannel) list;
 128 };
 129
 130 static AST_RWLIST_HEAD_STATIC(logchannels, logchannel);
 131
 132 enum logmsgtypes {
 133         LOGMSG_NORMAL = 0,
 134         LOGMSG_VERBOSE,
 135 };
 136
 137 struct logmsg {
 138         enum logmsgtypes type;
 139         char date[256];
 140         int level;
 141         char file[80];
 142         int line;
 143         char function[80];
 144         long process_id;
 145         AST_LIST_ENTRY(logmsg) list;
 146         char str[0];
 147 };
 148
 149 static AST_LIST_HEAD_STATIC(logmsgs, logmsg);
 150 static pthread_t logthread = AST_PTHREADT_NULL;
 151 static ast_cond_t logcond;
 152 static int close_logger_thread;
 153
 154 static FILE *eventlog;
 155 static FILE *qlog;
 156
 157 /*! \brief Logging channels used in the Asterisk logging system */
 158 static char *levels[] = {
 159         "DEBUG",
 160         "EVENT",
 161         "NOTICE",
 162         "WARNING",
 163         "ERROR",
 164         "VERBOSE",
 165         "DTMF"
 166 };
 167
 168 /*! \brief Colors used in the console for logging */
 169 static int colors[] = {
 170         COLOR_BRGREEN,
 171         COLOR_BRBLUE,
 172         COLOR_YELLOW,
 173         COLOR_BRRED,
 174         COLOR_RED,
 175         COLOR_GREEN,
 176         COLOR_BRGREEN
 177 };
 178
 179 AST_THREADSTORAGE(verbose_buf);
 180 #define VERBOSE_BUF_INIT_SIZE   256
 181
 182 AST_THREADSTORAGE(log_buf);
 183 #define LOG_BUF_INIT_SIZE       256
 184
 185 static int make_components(const char *s, int lineno)
 186 {
 187         char *w;
 188         int res = 0;
 189         char *stringp = ast_strdupa(s);
 190
 191         while ((w = strsep(&stringp, ","))) {
 192                 w = ast_skip_blanks(w);
 193                 if (!strcasecmp(w, "error"))
 194                         res |= (1 << __LOG_ERROR);
 195                 else if (!strcasecmp(w, "warning"))
 196                         res |= (1 << __LOG_WARNING);
 197                 else if (!strcasecmp(w, "notice"))
 198                         res |= (1 << __LOG_NOTICE);
 199                 else if (!strcasecmp(w, "event"))
 200                         res |= (1 << __LOG_EVENT);
 201                 else if (!strcasecmp(w, "debug"))
 202                         res |= (1 << __LOG_DEBUG);
 203                 else if (!strcasecmp(w, "verbose"))
 204                         res |= (1 << __LOG_VERBOSE);
 205                 else if (!strcasecmp(w, "dtmf"))
 206                         res |= (1 << __LOG_DTMF);
 207                 else {
 208                         fprintf(stderr, "Logfile Warning: Unknown keyword '%s' at line %d of logger.conf\n", w, lineno);
 209                 }
 210         }
 211
 212         return res;
 213 }
 214
 215 static struct logchannel *make_logchannel(const char *channel, const char *components, int lineno)
 216 {
 217         struct logchannel *chan;
 218         char *facility;
 219 #ifndef SOLARIS
 220         CODE *cptr;
 221 #endif
 222
 223         if (ast_strlen_zero(channel) || !(chan = ast_calloc(1, sizeof(*chan))))
 224                 return NULL;
 225
 226         if (!strcasecmp(channel, "console")) {
 227                 chan->type = LOGTYPE_CONSOLE;
 228         } else if (!strncasecmp(channel, "syslog", 6)) {
 229                 /*
 230                 * syntax is:
 231                 *  syslog.facility => level,level,level
 232                 */
 233                 facility = strchr(channel, '.');
 234                 if (!facility++ || !facility) {
 235                         facility = "local0";
 236                 }
 237
 238 #ifndef SOLARIS
 239                 /*
 240                 * Walk through the list of facilitynames (defined in sys/syslog.h)
 241                 * to see if we can find the one we have been given
 242                 */
 243                 chan->facility = -1;
 244                 cptr = facilitynames;
 245                 while (cptr->c_name) {
 246                         if (!strcasecmp(facility, cptr->c_name)) {
 247                                 chan->facility = cptr->c_val;
 248                                 break;
 249                         }
 250                         cptr++;
 251                 }
 252 #else
 253                 chan->facility = -1;
 254                 if (!strcasecmp(facility, "kern"))
 255                         chan->facility = LOG_KERN;
 256                 else if (!strcasecmp(facility, "USER"))
 257                         chan->facility = LOG_USER;
 258                 else if (!strcasecmp(facility, "MAIL"))
 259                         chan->facility = LOG_MAIL;
 260                 else if (!strcasecmp(facility, "DAEMON"))
 261                         chan->facility = LOG_DAEMON;
 262                 else if (!strcasecmp(facility, "AUTH"))
 263                         chan->facility = LOG_AUTH;
 264                 else if (!strcasecmp(facility, "SYSLOG"))
 265                         chan->facility = LOG_SYSLOG;
 266                 else if (!strcasecmp(facility, "LPR"))
 267                         chan->facility = LOG_LPR;
 268                 else if (!strcasecmp(facility, "NEWS"))
 269                         chan->facility = LOG_NEWS;
 270                 else if (!strcasecmp(facility, "UUCP"))
 271                         chan->facility = LOG_UUCP;
 272                 else if (!strcasecmp(facility, "CRON"))
 273                         chan->facility = LOG_CRON;
 274                 else if (!strcasecmp(facility, "LOCAL0"))
 275                         chan->facility = LOG_LOCAL0;
 276                 else if (!strcasecmp(facility, "LOCAL1"))
 277                         chan->facility = LOG_LOCAL1;
 278                 else if (!strcasecmp(facility, "LOCAL2"))
 279                         chan->facility = LOG_LOCAL2;
 280                 else if (!strcasecmp(facility, "LOCAL3"))
 281                         chan->facility = LOG_LOCAL3;
 282                 else if (!strcasecmp(facility, "LOCAL4"))
 283                         chan->facility = LOG_LOCAL4;
 284                 else if (!strcasecmp(facility, "LOCAL5"))
 285                         chan->facility = LOG_LOCAL5;
 286                 else if (!strcasecmp(facility, "LOCAL6"))
 287                         chan->facility = LOG_LOCAL6;
 288                 else if (!strcasecmp(facility, "LOCAL7"))
 289                         chan->facility = LOG_LOCAL7;
 290 #endif /* Solaris */
 291
 292                 if (0 > chan->facility) {
 293                         fprintf(stderr, "Logger Warning: bad syslog facility in logger.conf\n");
 294                         ast_free(chan);
 295                         return NULL;
 296                 }
 297
 298                 chan->type = LOGTYPE_SYSLOG;
 299                 snprintf(chan->filename, sizeof(chan->filename), "%s", channel);
 300                 openlog("asterisk", LOG_PID, chan->facility);
 301         } else {
 302                 if (channel[0] == '/') {
 303                         if (!ast_strlen_zero(hostname)) {
 304                                 snprintf(chan->filename, sizeof(chan->filename), "%s.%s", channel, hostname);
 305                         } else {
 306                                 ast_copy_string(chan->filename, channel, sizeof(chan->filename));
 307                         }
 308                 }
 309
 310                 if (!ast_strlen_zero(hostname)) {
 311                         snprintf(chan->filename, sizeof(chan->filename), "%s/%s.%s", ast_config_AST_LOG_DIR, channel, hostname);
 312                 } else {
 313                         snprintf(chan->filename, sizeof(chan->filename), "%s/%s", ast_config_AST_LOG_DIR, channel);
 314                 }
 315                 chan->fileptr = fopen(chan->filename, "a");
 316                 if (!chan->fileptr) {
 317                         /* Can't log here, since we're called with a lock */
 318                         fprintf(stderr, "Logger Warning: Unable to open log file '%s': %s\n", chan->filename, strerror(errno));
 319                 }
 320                 chan->type = LOGTYPE_FILE;
 321         }
 322         chan->logmask = make_components(components, lineno);
 323         return chan;
 324 }
 325
 326 static void init_logger_chain(int locked)
 327 {
 328         struct logchannel *chan;
 329         struct ast_config *cfg;
 330         struct ast_variable *var;
 331         const char *s;
 332         struct ast_flags config_flags = { 0 };
 333
 334         if (!(cfg = ast_config_load2("logger.conf", "logger", config_flags)) || cfg == CONFIG_STATUS_FILEINVALID)
 335                 return;
 336
 337         /* delete our list of log channels */
 338         if (!locked)
 339                 AST_RWLIST_WRLOCK(&logchannels);
 340         while ((chan = AST_RWLIST_REMOVE_HEAD(&logchannels, list)))
 341                 ast_free(chan);
 342         if (!locked)
 343                 AST_RWLIST_UNLOCK(&logchannels);
 344
 345         global_logmask = 0;
 346         errno = 0;
 347         /* close syslog */
 348         closelog();
 349
 350         /* If no config file, we're fine, set default options. */
 351         if (!cfg) {
 352                 if (errno)
 353                         fprintf(stderr, "Unable to open logger.conf: %s; default settings will be used.\n", strerror(errno));
 354                 else
 355                         fprintf(stderr, "Errors detected in logger.conf: see above; default settings will be used.\n");
 356                 if (!(chan = ast_calloc(1, sizeof(*chan))))
 357                         return;
 358                 chan->type = LOGTYPE_CONSOLE;
 359                 chan->logmask = 28; /*warning,notice,error */
 360                 if (!locked)
 361                         AST_RWLIST_WRLOCK(&logchannels);
 362                 AST_RWLIST_INSERT_HEAD(&logchannels, chan, list);
 363                 if (!locked)
 364                         AST_RWLIST_UNLOCK(&logchannels);
 365                 global_logmask |= chan->logmask;
 366                 return;
 367         }
 368
 369         if ((s = ast_variable_retrieve(cfg, "general", "appendhostname"))) {
 370                 if (ast_true(s)) {
 371                         if (gethostname(hostname, sizeof(hostname) - 1)) {
 372                                 ast_copy_string(hostname, "unknown", sizeof(hostname));
 373                                 fprintf(stderr, "What box has no hostname???\n");
 374                         }
 375                 } else
 376                         hostname[0] = '\0';
 377         } else
 378                 hostname[0] = '\0';
 379         if ((s = ast_variable_retrieve(cfg, "general", "dateformat")))
 380                 ast_copy_string(dateformat, s, sizeof(dateformat));
 381         else
 382                 ast_copy_string(dateformat, "%b %e %T", sizeof(dateformat));
 383         if ((s = ast_variable_retrieve(cfg, "general", "queue_log")))
 384                 logfiles.queue_log = ast_true(s);
 385         if ((s = ast_variable_retrieve(cfg, "general", "event_log")))
 386                 logfiles.event_log = ast_true(s);
 387         if ((s = ast_variable_retrieve(cfg, "general", "queue_log_name")))
 388                 ast_copy_string(queue_log_name, s, sizeof(queue_log_name));
 389         if ((s = ast_variable_retrieve(cfg, "general", "exec_after_rotate")))
 390                 ast_copy_string(exec_after_rotate, s, sizeof(exec_after_rotate));
 391         if ((s = ast_variable_retrieve(cfg, "general", "rotatestrategy"))) {
 392                 if (strcasecmp(s, "timestamp") == 0)
 393                         rotatestrategy = TIMESTAMP;
 394                 else if (strcasecmp(s, "rotate") == 0)
 395                         rotatestrategy = ROTATE;
 396                 else if (strcasecmp(s, "sequential") == 0)
 397                         rotatestrategy = SEQUENTIAL;
 398                 else
 399                         fprintf(stderr, "Unknown rotatestrategy: %s\n", s);
 400         } else {
 401                 if ((s = ast_variable_retrieve(cfg, "general", "rotatetimestamp"))) {
 402                         rotatestrategy = ast_true(s) ? TIMESTAMP : SEQUENTIAL;
 403                         fprintf(stderr, "rotatetimestamp option has been deprecated.  Please use rotatestrategy instead.\n");
 404                 }
 405         }
 406
 407         if (!locked)
 408                 AST_RWLIST_WRLOCK(&logchannels);
 409         var = ast_variable_browse(cfg, "logfiles");
 410         for (; var; var = var->next) {
 411                 if (!(chan = make_logchannel(var->name, var->value, var->lineno)))
 412                         continue;
 413                 AST_RWLIST_INSERT_HEAD(&logchannels, chan, list);
 414                 global_logmask |= chan->logmask;
 415         }
 416         if (!locked)
 417                 AST_RWLIST_UNLOCK(&logchannels);
 418
 419         ast_config_destroy(cfg);
 420 }
 421
 422 void ast_child_verbose(int level, const char *fmt, ...)
 423 {
 424         char *msg = NULL, *emsg = NULL, *sptr, *eptr;
 425         va_list ap, aq;
 426         int size;
 427
 428         /* Don't bother, if the level isn't that high */
 429         if (option_verbose < level) {
 430                 return;
 431         }
 432
 433         va_start(ap, fmt);
 434         va_copy(aq, ap);
 435         if ((size = vsnprintf(msg, 0, fmt, ap)) < 0) {
 436                 va_end(ap);
 437                 va_end(aq);
 438                 return;
 439         }
 440         va_end(ap);
 441
 442         if (!(msg = ast_malloc(size + 1))) {
 443                 va_end(aq);
 444                 return;
 445         }
 446
 447         vsnprintf(msg, size + 1, fmt, aq);
 448         va_end(aq);
 449
 450         if (!(emsg = ast_malloc(size * 2 + 1))) {
 451                 ast_free(msg);
 452                 return;
 453         }
 454
 455         for (sptr = msg, eptr = emsg; ; sptr++) {
 456                 if (*sptr == '"') {
 457                         *eptr++ = '\\';
 458                 }
 459                 *eptr++ = *sptr;
 460                 if (*sptr == '\0') {
 461                         break;
 462                 }
 463         }
 464         ast_free(msg);
 465
 466         fprintf(stdout, "verbose \"%s\" %d\n", emsg, level);
 467         fflush(stdout);
 468         ast_free(emsg);
 469 }
 470
 471 void ast_queue_log(const char *queuename, const char *callid, const char *agent, const char *event, const char *fmt, ...)
 472 {
 473         va_list ap;
 474         char qlog_msg[8192];
 475         int qlog_len;
 476         char time_str[16];
 477
 478         if (ast_check_realtime("queue_log")) {
 479                 va_start(ap, fmt);
 480                 vsnprintf(qlog_msg, sizeof(qlog_msg), fmt, ap);
 481                 va_end(ap);
 482                 snprintf(time_str, sizeof(time_str), "%ld", (long)time(NULL));
 483                 ast_store_realtime("queue_log", "time", time_str,
 484                                                 "callid", callid,
 485                                                 "queuename", queuename,
 486                                                 "agent", agent,
 487                                                 "event", event,
 488                                                 "data", qlog_msg,
 489                                                 SENTINEL);
 490         } else {
 491                 if (qlog) {
 492                         va_start(ap, fmt);
 493                         qlog_len = snprintf(qlog_msg, sizeof(qlog_msg), "%ld|%s|%s|%s|%s|", (long)time(NULL), callid, queuename, agent, event);
 494                         vsnprintf(qlog_msg + qlog_len, sizeof(qlog_msg) - qlog_len, fmt, ap);
 495                         va_end(ap);
 496                 }
 497                 AST_RWLIST_RDLOCK(&logchannels);
 498                 if (qlog) {
 499                         fprintf(qlog, "%s\n", qlog_msg);
 500                         fflush(qlog);
 501                 }
 502                 AST_RWLIST_UNLOCK(&logchannels);
 503         }
 504 }
 505
 506 static int rotate_file(const char *filename)
 507 {
 508         char old[PATH_MAX];
 509         char new[PATH_MAX];
 510         int x, y, which, found, res = 0, fd;
 511         char *suffixes[4] = { "", ".gz", ".bz2", ".Z" };
 512
 513         switch (rotatestrategy) {
 514         case SEQUENTIAL:
 515                 for (x = 0; ; x++) {
 516                         snprintf(new, sizeof(new), "%s.%d", filename, x);
 517                         fd = open(new, O_RDONLY);
 518                         if (fd > -1)
 519                                 close(fd);
 520                         else
 521                                 break;
 522                 }
 523                 if (rename(filename, new)) {
 524                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", filename, new);
 525                         res = -1;
 526                 }
 527                 break;
 528         case TIMESTAMP:
 529                 snprintf(new, sizeof(new), "%s.%ld", filename, (long)time(NULL));
 530                 if (rename(filename, new)) {
 531                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", filename, new);
 532                         res = -1;
 533                 }
 534                 break;
 535         case ROTATE:
 536                 /* Find the next empty slot, including a possible suffix */
 537                 for (x = 0; ; x++) {
 538                         found = 0;
 539                         for (which = 0; which < ARRAY_LEN(suffixes); which++) {
 540                                 snprintf(new, sizeof(new), "%s.%d%s", filename, x, suffixes[which]);
 541                                 fd = open(new, O_RDONLY);
 542                                 if (fd > -1) {
 543                                         close(fd);
 544                                         found = 1;
 545                                         break;
 546                                 }
 547                         }
 548                         if (!found) {
 549                                 break;
 550                         }
 551                 }
 552
 553                 /* Found an empty slot */
 554                 for (y = x; y > 0; y--) {
 555                         for (which = 0; which < ARRAY_LEN(suffixes); which++) {
 556                                 snprintf(old, sizeof(old), "%s.%d%s", filename, y - 1, suffixes[which]);
 557                                 fd = open(old, O_RDONLY);
 558                                 if (fd > -1) {
 559                                         /* Found the right suffix */
 560                                         close(fd);
 561                                         snprintf(new, sizeof(new), "%s.%d%s", filename, y, suffixes[which]);
 562                                         if (rename(old, new)) {
 563                                                 fprintf(stderr, "Unable to rename file '%s' to '%s'\n", old, new);
 564                                                 res = -1;
 565                                         }
 566                                         break;
 567                                 }
 568                         }
 569                 }
 570
 571                 /* Finally, rename the current file */
 572                 snprintf(new, sizeof(new), "%s.0", filename);
 573                 if (rename(filename, new)) {
 574                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", filename, new);
 575                         res = -1;
 576                 }
 577         }
 578
 579         if (!ast_strlen_zero(exec_after_rotate)) {
 580                 struct ast_channel *c = ast_channel_alloc(0, 0, "", "", "", "", "", 0, "Logger/rotate");
 581                 char buf[512];
 582                 pbx_builtin_setvar_helper(c, "filename", filename);
 583                 pbx_substitute_variables_helper(c, exec_after_rotate, buf, sizeof(buf));
 584                 if (ast_safe_system(buf) != -1) {
 585                         ast_log(LOG_WARNING, "error executing '%s'\n", buf);
 586                 }
 587                 c = ast_channel_release(c);
 588         }
 589         return res;
 590 }
 591
 592 static int reload_logger(int rotate)
 593 {
 594         char old[PATH_MAX] = "";
 595         int event_rotate = rotate, queue_rotate = rotate;
 596         struct logchannel *f;
 597         int res = 0;
 598         struct stat st;
 599
 600         AST_RWLIST_WRLOCK(&logchannels);
 601
 602         if (eventlog) {
 603                 if (rotate < 0) {
 604                         /* Check filesize - this one typically doesn't need an auto-rotate */
 605                         snprintf(old, sizeof(old), "%s/%s", ast_config_AST_LOG_DIR, EVENTLOG);
 606                         if (stat(old, &st) != 0 || st.st_size > 0x40000000) { /* Arbitrarily, 1 GB */
 607                                 fclose(eventlog);
 608                                 eventlog = NULL;
 609                         } else
 610                                 event_rotate = 0;
 611                 } else {
 612                         fclose(eventlog);
 613                         eventlog = NULL;
 614                 }
 615         } else
 616                 event_rotate = 0;
 617
 618         if (qlog) {
 619                 if (rotate < 0) {
 620                         /* Check filesize - this one typically doesn't need an auto-rotate */
 621                         snprintf(old, sizeof(old), "%s/%s", ast_config_AST_LOG_DIR, queue_log_name);
 622                         if (stat(old, &st) != 0 || st.st_size > 0x40000000) { /* Arbitrarily, 1 GB */
 623                                 fclose(qlog);
 624                                 qlog = NULL;
 625                         } else
 626                                 queue_rotate = 0;
 627                 } else {
 628                         fclose(qlog);
 629                         qlog = NULL;
 630                 }
 631         } else
 632                 queue_rotate = 0;
 633
 634         ast_mkdir(ast_config_AST_LOG_DIR, 0777);
 635
 636         AST_RWLIST_TRAVERSE(&logchannels, f, list) {
 637                 if (f->disabled) {
 638                         f->disabled = 0;        /* Re-enable logging at reload */
 639                         manager_event(EVENT_FLAG_SYSTEM, "LogChannel", "Channel: %s\r\nEnabled: Yes\r\n", f->filename);
 640                 }
 641                 if (f->fileptr && (f->fileptr != stdout) && (f->fileptr != stderr)) {
 642                         fclose(f->fileptr);     /* Close file */
 643                         f->fileptr = NULL;
 644                         if (rotate)
 645                                 rotate_file(f->filename);
 646                 }
 647         }
 648
 649         filesize_reload_needed = 0;
 650
 651         init_logger_chain(1 /* locked */);
 652
 653         if (logfiles.event_log) {
 654                 snprintf(old, sizeof(old), "%s/%s", ast_config_AST_LOG_DIR, EVENTLOG);
 655                 if (event_rotate)
 656                         rotate_file(old);
 657
 658                 eventlog = fopen(old, "a");
 659                 if (eventlog) {
 660                         ast_log(LOG_EVENT, "Restarted Asterisk Event Logger\n");
 661                         ast_verb(1, "Asterisk Event Logger restarted\n");
 662                 } else {
 663                         ast_log(LOG_ERROR, "Unable to create event log: %s\n", strerror(errno));
 664                         res = -1;
 665                 }
 666         }
 667
 668         if (logfiles.queue_log) {
 669                 snprintf(old, sizeof(old), "%s/%s", ast_config_AST_LOG_DIR, queue_log_name);
 670                 if (queue_rotate)
 671                         rotate_file(old);
 672
 673                 qlog = fopen(old, "a");
 674                 if (qlog) {
 675                         AST_RWLIST_UNLOCK(&logchannels);
 676                         ast_queue_log("NONE", "NONE", "NONE", "CONFIGRELOAD", "%s", "");
 677                         AST_RWLIST_WRLOCK(&logchannels);
 678                         ast_log(LOG_EVENT, "Restarted Asterisk Queue Logger\n");
 679                         ast_verb(1, "Asterisk Queue Logger restarted\n");
 680                 } else {
 681                         ast_log(LOG_ERROR, "Unable to create queue log: %s\n", strerror(errno));
 682                         res = -1;
 683                 }
 684         }
 685
 686         AST_RWLIST_UNLOCK(&logchannels);
 687
 688         return res;
 689 }
 690
 691 /*! \brief Reload the logger module without rotating log files (also used from loader.c during
 692         a full Asterisk reload) */
 693 int logger_reload(void)
 694 {
 695         if(reload_logger(0))
 696                 return RESULT_FAILURE;
 697         return RESULT_SUCCESS;
 698 }
 699
 700 static char *handle_logger_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 701 {
 702         switch (cmd) {
 703         case CLI_INIT:
 704                 e->command = "logger reload";
 705                 e->usage =
 706                         "Usage: logger reload\n"
 707                         "       Reloads the logger subsystem state.  Use after restarting syslogd(8) if you are using syslog logging.\n";
 708                 return NULL;
 709         case CLI_GENERATE:
 710                 return NULL;
 711         }
 712         if (reload_logger(0)) {
 713                 ast_cli(a->fd, "Failed to reload the logger\n");
 714                 return CLI_FAILURE;
 715         }
 716         return CLI_SUCCESS;
 717 }
 718
 719 static char *handle_logger_rotate(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 720 {
 721         switch (cmd) {
 722         case CLI_INIT:
 723                 e->command = "logger rotate";
 724                 e->usage =
 725                         "Usage: logger rotate\n"
 726                         "       Rotates and Reopens the log files.\n";
 727                 return NULL;
 728         case CLI_GENERATE:
 729                 return NULL;
 730         }
 731         if (reload_logger(1)) {
 732                 ast_cli(a->fd, "Failed to reload the logger and rotate log files\n");
 733                 return CLI_FAILURE;
 734         }
 735         return CLI_SUCCESS;
 736 }
 737
 738 static char *handle_logger_set_level(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 739 {
 740         int x;
 741         int state;
 742         int level = -1;
 743
 744         switch (cmd) {
 745         case CLI_INIT:
 746                 e->command = "logger set level";
 747                 e->usage =
 748                         "Usage: logger set level\n"
 749                         "       Set a specific log level to enabled/disabled for this console.\n";
 750                 return NULL;
 751         case CLI_GENERATE:
 752                 return NULL;
 753         }
 754
 755         if (a->argc < 5)
 756                 return CLI_SHOWUSAGE;
 757
 758         for (x = 0; x <= NUMLOGLEVELS; x++) {
 759                 if (!strcasecmp(a->argv[3], levels[x])) {
 760                         level = x;
 761                         break;
 762                 }
 763         }
 764
 765         state = ast_true(a->argv[4]) ? 1 : 0;
 766
 767         if (level != -1) {
 768                 ast_console_toggle_loglevel(a->fd, level, state);
 769                 ast_cli(a->fd, "Logger status for '%s' has been set to '%s'.\n", levels[level], state ? "on" : "off");
 770         } else
 771                 return CLI_SHOWUSAGE;
 772
 773         return CLI_SUCCESS;
 774 }
 775
 776 /*! \brief CLI command to show logging system configuration */
 777 static char *handle_logger_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 778 {
 779 #define FORMATL "%-35.35s %-8.8s %-9.9s "
 780         struct logchannel *chan;
 781         switch (cmd) {
 782         case CLI_INIT:
 783                 e->command = "logger show channels";
 784                 e->usage =
 785                         "Usage: logger show channels\n"
 786                         "       List configured logger channels.\n";
 787                 return NULL;
 788         case CLI_GENERATE:
 789                 return NULL;
 790         }
 791         ast_cli(a->fd, FORMATL, "Channel", "Type", "Status");
 792         ast_cli(a->fd, "Configuration\n");
 793         ast_cli(a->fd, FORMATL, "-------", "----", "------");
 794         ast_cli(a->fd, "-------------\n");
 795         AST_RWLIST_RDLOCK(&logchannels);
 796         AST_RWLIST_TRAVERSE(&logchannels, chan, list) {
 797                 ast_cli(a->fd, FORMATL, chan->filename, chan->type == LOGTYPE_CONSOLE ? "Console" : (chan->type == LOGTYPE_SYSLOG ? "Syslog" : "File"),
 798                         chan->disabled ? "Disabled" : "Enabled");
 799                 ast_cli(a->fd, " - ");
 800                 if (chan->logmask & (1 << __LOG_DEBUG))
 801                         ast_cli(a->fd, "Debug ");
 802                 if (chan->logmask & (1 << __LOG_DTMF))
 803                         ast_cli(a->fd, "DTMF ");
 804                 if (chan->logmask & (1 << __LOG_VERBOSE))
 805                         ast_cli(a->fd, "Verbose ");
 806                 if (chan->logmask & (1 << __LOG_WARNING))
 807                         ast_cli(a->fd, "Warning ");
 808                 if (chan->logmask & (1 << __LOG_NOTICE))
 809                         ast_cli(a->fd, "Notice ");
 810                 if (chan->logmask & (1 << __LOG_ERROR))
 811                         ast_cli(a->fd, "Error ");
 812                 if (chan->logmask & (1 << __LOG_EVENT))
 813                         ast_cli(a->fd, "Event ");
 814                 ast_cli(a->fd, "\n");
 815         }
 816         AST_RWLIST_UNLOCK(&logchannels);
 817         ast_cli(a->fd, "\n");
 818
 819         return CLI_SUCCESS;
 820 }
 821
 822 struct verb {
 823         void (*verboser)(const char *string);
 824         AST_LIST_ENTRY(verb) list;
 825 };
 826
 827 static AST_RWLIST_HEAD_STATIC(verbosers, verb);
 828
 829 static struct ast_cli_entry cli_logger[] = {
 830         AST_CLI_DEFINE(handle_logger_show_channels, "List configured log channels"),
 831         AST_CLI_DEFINE(handle_logger_reload, "Reopens the log files"),
 832         AST_CLI_DEFINE(handle_logger_rotate, "Rotates and reopens the log files"),
 833         AST_CLI_DEFINE(handle_logger_set_level, "Enables/Disables a specific logging level for this console")
 834 };
 835
 836 static int handle_SIGXFSZ(int sig)
 837 {
 838         /* Indicate need to reload */
 839         filesize_reload_needed = 1;
 840         return 0;
 841 }
 842
 843 static void ast_log_vsyslog(int level, const char *file, int line, const char *function, char *str, long pid)
 844 {
 845         char buf[BUFSIZ];
 846
 847         if (level >= SYSLOG_NLEVELS) {
 848                 /* we are locked here, so cannot ast_log() */
 849                 fprintf(stderr, "ast_log_vsyslog called with bogus level: %d\n", level);
 850                 return;
 851         }
 852
 853         if (level == __LOG_VERBOSE) {
 854                 snprintf(buf, sizeof(buf), "VERBOSE[%ld]: %s", pid, str);
 855                 level = __LOG_DEBUG;
 856         } else if (level == __LOG_DTMF) {
 857                 snprintf(buf, sizeof(buf), "DTMF[%ld]: %s", pid, str);
 858                 level = __LOG_DEBUG;
 859         } else {
 860                 snprintf(buf, sizeof(buf), "%s[%ld]: %s:%d in %s: %s",
 861                          levels[level], pid, file, line, function, str);
 862         }
 863
 864         term_strip(buf, buf, strlen(buf) + 1);
 865         syslog(syslog_level_map[level], "%s", buf);
 866 }
 867
 868 /*! \brief Print a normal log message to the channels */
 869 static void logger_print_normal(struct logmsg *logmsg)
 870 {
 871         struct logchannel *chan = NULL;
 872         char buf[BUFSIZ];
 873
 874         AST_RWLIST_RDLOCK(&logchannels);
 875
 876         if (logfiles.event_log && logmsg->level == __LOG_EVENT) {
 877                 fprintf(eventlog, "%s asterisk[%ld]: %s", logmsg->date, (long)getpid(), logmsg->str);
 878                 fflush(eventlog);
 879                 AST_RWLIST_UNLOCK(&logchannels);
 880                 return;
 881         }
 882
 883         if (!AST_RWLIST_EMPTY(&logchannels)) {
 884                 AST_RWLIST_TRAVERSE(&logchannels, chan, list) {
 885                         /* If the channel is disabled, then move on to the next one */
 886                         if (chan->disabled)
 887                                 continue;
 888                         /* Check syslog channels */
 889                         if (chan->type == LOGTYPE_SYSLOG && (chan->logmask & (1 << logmsg->level))) {
 890                                 ast_log_vsyslog(logmsg->level, logmsg->file, logmsg->line, logmsg->function, logmsg->str, logmsg->process_id);
 891                         /* Console channels */
 892                         } else if (chan->type == LOGTYPE_CONSOLE && (chan->logmask & (1 << logmsg->level))) {
 893                                 char linestr[128];
 894                                 char tmp1[80], tmp2[80], tmp3[80], tmp4[80];
 895
 896                                 /* If the level is verbose, then skip it */
 897                                 if (logmsg->level == __LOG_VERBOSE)
 898                                         continue;
 899
 900                                 /* Turn the numerical line number into a string */
 901                                 snprintf(linestr, sizeof(linestr), "%d", logmsg->line);
 902                                 /* Build string to print out */
 903                                 snprintf(buf, sizeof(buf), "[%s] %s[%ld]: %s:%s %s: %s",
 904                                          logmsg->date,
 905                                          term_color(tmp1, levels[logmsg->level], colors[logmsg->level], 0, sizeof(tmp1)),
 906                                          logmsg->process_id,
 907                                          term_color(tmp2, logmsg->file, COLOR_BRWHITE, 0, sizeof(tmp2)),
 908                                          term_color(tmp3, linestr, COLOR_BRWHITE, 0, sizeof(tmp3)),
 909                                          term_color(tmp4, logmsg->function, COLOR_BRWHITE, 0, sizeof(tmp4)),
 910                                          logmsg->str);
 911                                 /* Print out */
 912                                 ast_console_puts_mutable(buf, logmsg->level);
 913                         /* File channels */
 914                         } else if (chan->type == LOGTYPE_FILE && (chan->logmask & (1 << logmsg->level))) {
 915                                 int res = 0;
 916
 917                                 /* If no file pointer exists, skip it */
 918                                 if (!chan->fileptr)
 919                                         continue;
 920
 921                                 /* Print out to the file */
 922                                 res = fprintf(chan->fileptr, "[%s] %s[%ld] %s: %s",
 923                                               logmsg->date, levels[logmsg->level], logmsg->process_id, logmsg->file, logmsg->str);
 924                                 if (res <= 0 && !ast_strlen_zero(logmsg->str)) {
 925                                         fprintf(stderr, "**** Asterisk Logging Error: ***********\n");
 926                                         if (errno == ENOMEM || errno == ENOSPC)
 927                                                 fprintf(stderr, "Asterisk logging error: Out of disk space, can't log to log file %s\n", chan->filename);
 928                                         else
 929                                                 fprintf(stderr, "Logger Warning: Unable to write to log file '%s': %s (disabled)\n", chan->filename, strerror(errno));
 930                                         manager_event(EVENT_FLAG_SYSTEM, "LogChannel", "Channel: %s\r\nEnabled: No\r\nReason: %d - %s\r\n", chan->filename, errno, strerror(errno));
 931                                         chan->disabled = 1;
 932                                 } else if (res > 0) {
 933                                         fflush(chan->fileptr);
 934                                 }
 935                         }
 936                 }
 937         } else if (logmsg->level != __LOG_VERBOSE) {
 938                 fputs(logmsg->str, stdout);
 939         }
 940
 941         AST_RWLIST_UNLOCK(&logchannels);
 942
 943         /* If we need to reload because of the file size, then do so */
 944         if (filesize_reload_needed) {
 945                 reload_logger(-1);
 946                 ast_log(LOG_EVENT, "Rotated Logs Per SIGXFSZ (Exceeded file size limit)\n");
 947                 ast_verb(1, "Rotated Logs Per SIGXFSZ (Exceeded file size limit)\n");
 948         }
 949
 950         return;
 951 }
 952
 953 /*! \brief Print a verbose message to the verbosers */
 954 static void logger_print_verbose(struct logmsg *logmsg)
 955 {
 956         struct verb *v = NULL;
 957
 958         /* Iterate through the list of verbosers and pass them the log message string */
 959         AST_RWLIST_RDLOCK(&verbosers);
 960         AST_RWLIST_TRAVERSE(&verbosers, v, list)
 961                 v->verboser(logmsg->str);
 962         AST_RWLIST_UNLOCK(&verbosers);
 963
 964         return;
 965 }
 966
 967 /*! \brief Actual logging thread */
 968 static void *logger_thread(void *data)
 969 {
 970         struct logmsg *next = NULL, *msg = NULL;
 971
 972         for (;;) {
 973                 /* We lock the message list, and see if any message exists... if not we wait on the condition to be signalled */
 974                 AST_LIST_LOCK(&logmsgs);
 975                 if (AST_LIST_EMPTY(&logmsgs)) {
 976                         if (close_logger_thread) {
 977                                 break;
 978                         } else {
 979                                 ast_cond_wait(&logcond, &logmsgs.lock);
 980                         }
 981                 }
 982                 next = AST_LIST_FIRST(&logmsgs);
 983                 AST_LIST_HEAD_INIT_NOLOCK(&logmsgs);
 984                 AST_LIST_UNLOCK(&logmsgs);
 985
 986                 /* Otherwise go through and process each message in the order added */
 987                 while ((msg = next)) {
 988                         /* Get the next entry now so that we can free our current structure later */
 989                         next = AST_LIST_NEXT(msg, list);
 990
 991                         /* Depending on the type, send it to the proper function */
 992                         if (msg->type == LOGMSG_NORMAL)
 993                                 logger_print_normal(msg);
 994                         else if (msg->type == LOGMSG_VERBOSE)
 995                                 logger_print_verbose(msg);
 996
 997                         /* Free the data since we are done */
 998                         ast_free(msg);
 999                 }
1000
1001                 /* If we should stop, then stop */
1002                 if (close_logger_thread)
1003                         break;
1004         }
1005
1006         return NULL;
1007 }
1008
1009 int init_logger(void)
1010 {
1011         char tmp[256];
1012         int res = 0;
1013
1014         /* auto rotate if sig SIGXFSZ comes a-knockin */
1015         (void) signal(SIGXFSZ, (void *) handle_SIGXFSZ);
1016
1017         /* start logger thread */
1018         ast_cond_init(&logcond, NULL);
1019         if (ast_pthread_create(&logthread, NULL, logger_thread, NULL) < 0) {
1020                 ast_cond_destroy(&logcond);
1021                 return -1;
1022         }
1023
1024         /* register the logger cli commands */
1025         ast_cli_register_multiple(cli_logger, ARRAY_LEN(cli_logger));
1026
1027         ast_mkdir(ast_config_AST_LOG_DIR, 0777);
1028
1029         /* create log channels */
1030         init_logger_chain(0 /* locked */);
1031
1032         /* create the eventlog */
1033         if (logfiles.event_log) {
1034                 snprintf(tmp, sizeof(tmp), "%s/%s", ast_config_AST_LOG_DIR, EVENTLOG);
1035                 eventlog = fopen(tmp, "a");
1036                 if (eventlog) {
1037                         ast_log(LOG_EVENT, "Started Asterisk Event Logger\n");
1038                         ast_verb(1, "Asterisk Event Logger Started %s\n", tmp);
1039                 } else {
1040                         ast_log(LOG_ERROR, "Unable to create event log: %s\n", strerror(errno));
1041                         res = -1;
1042                 }
1043         }
1044
1045         if (logfiles.queue_log) {
1046                 snprintf(tmp, sizeof(tmp), "%s/%s", ast_config_AST_LOG_DIR, queue_log_name);
1047                 qlog = fopen(tmp, "a");
1048                 ast_queue_log("NONE", "NONE", "NONE", "QUEUESTART", "%s", "");
1049         }
1050         return res;
1051 }
1052
1053 void close_logger(void)
1054 {
1055         struct logchannel *f = NULL;
1056
1057         /* Stop logger thread */
1058         AST_LIST_LOCK(&logmsgs);
1059         close_logger_thread = 1;
1060         ast_cond_signal(&logcond);
1061         AST_LIST_UNLOCK(&logmsgs);
1062
1063         if (logthread != AST_PTHREADT_NULL)
1064                 pthread_join(logthread, NULL);
1065
1066         AST_RWLIST_WRLOCK(&logchannels);
1067
1068         if (eventlog) {
1069                 fclose(eventlog);
1070                 eventlog = NULL;
1071         }
1072
1073         if (qlog) {
1074                 fclose(qlog);
1075                 qlog = NULL;
1076         }
1077
1078         AST_RWLIST_TRAVERSE(&logchannels, f, list) {
1079                 if (f->fileptr && (f->fileptr != stdout) && (f->fileptr != stderr)) {
1080                         fclose(f->fileptr);
1081                         f->fileptr = NULL;
1082                 }
1083         }
1084
1085         closelog(); /* syslog */
1086
1087         AST_RWLIST_UNLOCK(&logchannels);
1088
1089         return;
1090 }
1091
1092 /*!
1093  * \brief send log messages to syslog and/or the console
1094  */
1095 void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
1096 {
1097         struct logmsg *logmsg = NULL;
1098         struct ast_str *buf = NULL;
1099         struct ast_tm tm;
1100         struct timeval now = ast_tvnow();
1101         int res = 0;
1102         va_list ap;
1103
1104         if (!(buf = ast_str_thread_get(&log_buf, LOG_BUF_INIT_SIZE)))
1105                 return;
1106
1107         if (AST_RWLIST_EMPTY(&logchannels)) {
1108                 /*
1109                  * we don't have the logger chain configured yet,
1110                  * so just log to stdout
1111                  */
1112                 if (level != __LOG_VERBOSE) {
1113                         int result;
1114                         va_start(ap, fmt);
1115                         result = ast_str_set_va(&buf, BUFSIZ, fmt, ap); /* XXX BUFSIZ ? */
1116                         va_end(ap);
1117                         if (result != AST_DYNSTR_BUILD_FAILED) {
1118                                 term_filter_escapes(ast_str_buffer(buf));
1119                                 fputs(ast_str_buffer(buf), stdout);
1120                         }
1121                 }
1122                 return;
1123         }
1124
1125         /* don't display LOG_DEBUG messages unless option_verbose _or_ option_debug
1126            are non-zero; LOG_DEBUG messages can still be displayed if option_debug
1127            is zero, if option_verbose is non-zero (this allows for 'level zero'
1128            LOG_DEBUG messages to be displayed, if the logmask on any channel
1129            allows it)
1130         */
1131         if (!option_verbose && !option_debug && (level == __LOG_DEBUG))
1132                 return;
1133
1134         /* Ignore anything that never gets logged anywhere */
1135         if (!(global_logmask & (1 << level)))
1136                 return;
1137
1138         /* Build string */
1139         va_start(ap, fmt);
1140         res = ast_str_set_va(&buf, BUFSIZ, fmt, ap);
1141         va_end(ap);
1142
1143         /* If the build failed, then abort and free this structure */
1144         if (res == AST_DYNSTR_BUILD_FAILED)
1145                 return;
1146
1147         /* Create a new logging message */
1148         if (!(logmsg = ast_calloc(1, sizeof(*logmsg) + res + 1)))
1149                 return;
1150
1151         /* Copy string over */
1152         strcpy(logmsg->str, ast_str_buffer(buf));
1153
1154         /* Set type to be normal */
1155         logmsg->type = LOGMSG_NORMAL;
1156
1157         /* Create our date/time */
1158         ast_localtime(&now, &tm, NULL);
1159         ast_strftime(logmsg->date, sizeof(logmsg->date), dateformat, &tm);
1160
1161         /* Copy over data */
1162         logmsg->level = level;
1163         logmsg->line = line;
1164         ast_copy_string(logmsg->file, file, sizeof(logmsg->file));
1165         ast_copy_string(logmsg->function, function, sizeof(logmsg->function));
1166         logmsg->process_id = (long) GETTID();
1167
1168         /* If the logger thread is active, append it to the tail end of the list - otherwise skip that step */
1169         if (logthread != AST_PTHREADT_NULL) {
1170                 AST_LIST_LOCK(&logmsgs);
1171                 AST_LIST_INSERT_TAIL(&logmsgs, logmsg, list);
1172                 ast_cond_signal(&logcond);
1173                 AST_LIST_UNLOCK(&logmsgs);
1174         } else {
1175                 logger_print_normal(logmsg);
1176                 ast_free(logmsg);
1177         }
1178
1179         return;
1180 }
1181
1182 #ifdef HAVE_BKTR
1183
1184 struct ast_bt *ast_bt_create(void)
1185 {
1186         struct ast_bt *bt = ast_calloc(1, sizeof(*bt));
1187         if (!bt) {
1188                 ast_log(LOG_ERROR, "Unable to allocate memory for backtrace structure!\n");
1189                 return NULL;
1190         }
1191
1192         bt->alloced = 1;
1193
1194         ast_bt_get_addresses(bt);
1195
1196         return bt;
1197 }
1198
1199 int ast_bt_get_addresses(struct ast_bt *bt)
1200 {
1201         bt->num_frames = backtrace(bt->addresses, AST_MAX_BT_FRAMES);
1202
1203         return 0;
1204 }
1205
1206 void *ast_bt_destroy(struct ast_bt *bt)
1207 {
1208         if (bt->alloced) {
1209                 ast_free(bt);
1210         }
1211
1212         return NULL;
1213 }
1214
1215 #endif /* HAVE_BKTR */
1216
1217 void ast_backtrace(void)
1218 {
1219 #ifdef HAVE_BKTR
1220         struct ast_bt *bt;
1221         int i = 0;
1222         char **strings;
1223
1224         if (!(bt = ast_bt_create())) {
1225                 ast_log(LOG_WARNING, "Unable to allocate space for backtrace structure\n");
1226                 return;
1227         }
1228
1229         if ((strings = backtrace_symbols(bt->addresses, bt->num_frames))) {
1230                 ast_debug(1, "Got %d backtrace record%c\n", bt->num_frames, bt->num_frames != 1 ? 's' : ' ');
1231                 for (i = 0; i < bt->num_frames; i++) {
1232                         ast_log(LOG_DEBUG, "#%d: [%p] %s\n", i, bt->addresses[i], strings[i]);
1233                 }
1234                 free(strings);
1235         } else {
1236                 ast_debug(1, "Could not allocate memory for backtrace\n");
1237         }
1238         ast_bt_destroy(bt);
1239 #else
1240         ast_log(LOG_WARNING, "Must run configure with '--with-execinfo' for stack backtraces.\n");
1241 #endif
1242 }
1243
1244 void __ast_verbose_ap(const char *file, int line, const char *func, const char *fmt, va_list ap)
1245 {
1246         struct logmsg *logmsg = NULL;
1247         struct ast_str *buf = NULL;
1248         int res = 0;
1249
1250         if (!(buf = ast_str_thread_get(&verbose_buf, VERBOSE_BUF_INIT_SIZE)))
1251                 return;
1252
1253         if (ast_opt_timestamp) {
1254                 struct timeval now;
1255                 struct ast_tm tm;
1256                 char date[40];
1257                 char *datefmt;
1258
1259                 now = ast_tvnow();
1260                 ast_localtime(&now, &tm, NULL);
1261                 ast_strftime(date, sizeof(date), dateformat, &tm);
1262                 datefmt = alloca(strlen(date) + 3 + strlen(fmt) + 1);
1263                 sprintf(datefmt, "%c[%s] %s", 127, date, fmt);
1264                 fmt = datefmt;
1265         } else {
1266                 char *tmp = alloca(strlen(fmt) + 2);
1267                 sprintf(tmp, "%c%s", 127, fmt);
1268                 fmt = tmp;
1269         }
1270
1271         /* Build string */
1272         res = ast_str_set_va(&buf, 0, fmt, ap);
1273
1274         /* If the build failed then we can drop this allocated message */
1275         if (res == AST_DYNSTR_BUILD_FAILED)
1276                 return;
1277
1278         if (!(logmsg = ast_calloc(1, sizeof(*logmsg) + res + 1)))
1279                 return;
1280
1281         strcpy(logmsg->str, ast_str_buffer(buf));
1282
1283         ast_log(__LOG_VERBOSE, file, line, func, "%s", logmsg->str + 1);
1284
1285         /* Set type */
1286         logmsg->type = LOGMSG_VERBOSE;
1287
1288         /* Add to the list and poke the thread if possible */
1289         if (logthread != AST_PTHREADT_NULL) {
1290                 AST_LIST_LOCK(&logmsgs);
1291                 AST_LIST_INSERT_TAIL(&logmsgs, logmsg, list);
1292                 ast_cond_signal(&logcond);
1293                 AST_LIST_UNLOCK(&logmsgs);
1294         } else {
1295                 logger_print_verbose(logmsg);
1296                 ast_free(logmsg);
1297         }
1298 }
1299
1300 void __ast_verbose(const char *file, int line, const char *func, const char *fmt, ...)
1301 {
1302         va_list ap;
1303         va_start(ap, fmt);
1304         __ast_verbose_ap(file, line, func, fmt, ap);
1305         va_end(ap);
1306 }
1307
1308 /* No new code should use this directly, but we have the ABI for backwards compat */
1309 #undef ast_verbose
1310 void __attribute__((format(printf, 1,2))) ast_verbose(const char *fmt, ...);
1311 void ast_verbose(const char *fmt, ...)
1312 {
1313         va_list ap;
1314         va_start(ap, fmt);
1315         __ast_verbose_ap("", 0, "", fmt, ap);
1316         va_end(ap);
1317 }
1318
1319 int ast_register_verbose(void (*v)(const char *string))
1320 {
1321         struct verb *verb;
1322
1323         if (!(verb = ast_malloc(sizeof(*verb))))
1324                 return -1;
1325
1326         verb->verboser = v;
1327
1328         AST_RWLIST_WRLOCK(&verbosers);
1329         AST_RWLIST_INSERT_HEAD(&verbosers, verb, list);
1330         AST_RWLIST_UNLOCK(&verbosers);
1331
1332         return 0;
1333 }
1334
1335 int ast_unregister_verbose(void (*v)(const char *string))
1336 {
1337         struct verb *cur;
1338
1339         AST_RWLIST_WRLOCK(&verbosers);
1340         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&verbosers, cur, list) {
1341                 if (cur->verboser == v) {
1342                         AST_RWLIST_REMOVE_CURRENT(list);
1343                         ast_free(cur);
1344                         break;
1345                 }
1346         }
1347         AST_RWLIST_TRAVERSE_SAFE_END;
1348         AST_RWLIST_UNLOCK(&verbosers);
1349
1350         return cur ? 0 : -1;
1351 }