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 /*** MODULEINFO
  29         <support_level>core</support_level>
  30  ***/
  31
  32 #include "asterisk.h"
  33
  34 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  35
  36 /* When we include logger.h again it will trample on some stuff in syslog.h, but
  37  * nothing we care about in here. */
  38 #include <syslog.h>
  39
  40 #include "asterisk/_private.h"
  41 #include "asterisk/paths.h"     /* use ast_config_AST_LOG_DIR */
  42 #include "asterisk/logger.h"
  43 #include "asterisk/lock.h"
  44 #include "asterisk/channel.h"
  45 #include "asterisk/config.h"
  46 #include "asterisk/term.h"
  47 #include "asterisk/cli.h"
  48 #include "asterisk/utils.h"
  49 #include "asterisk/manager.h"
  50 #include "asterisk/astobj2.h"
  51 #include "asterisk/threadstorage.h"
  52 #include "asterisk/strings.h"
  53 #include "asterisk/pbx.h"
  54 #include "asterisk/app.h"
  55 #include "asterisk/syslog.h"
  56 #include "asterisk/buildinfo.h"
  57 #include "asterisk/ast_version.h"
  58
  59 #include <signal.h>
  60 #include <time.h>
  61 #include <sys/stat.h>
  62 #include <fcntl.h>
  63 #ifdef HAVE_BKTR
  64 #include <execinfo.h>
  65 #define MAX_BACKTRACE_FRAMES 20
  66 #  if defined(HAVE_DLADDR) && defined(HAVE_BFD) && defined(BETTER_BACKTRACES)
  67 #    include <dlfcn.h>
  68 #    include <bfd.h>
  69 #  endif
  70 #endif
  71
  72 /*** DOCUMENTATION
  73  ***/
  74
  75 static char dateformat[256] = "%b %e %T";               /* Original Asterisk Format */
  76
  77 static char queue_log_name[256] = QUEUELOG;
  78 static char exec_after_rotate[256] = "";
  79
  80 static int filesize_reload_needed;
  81 static unsigned int global_logmask = 0xFFFF;
  82 static int queuelog_init;
  83 static int logger_initialized;
  84 static volatile int next_unique_callid; /* Used to assign unique call_ids to calls */
  85 static int display_callids;
  86 static void unique_callid_cleanup(void *data);
  87
  88 struct ast_callid {
  89     int call_identifier; /* Numerical value of the call displayed in the logs */
  90 };
  91
  92 AST_THREADSTORAGE_CUSTOM(unique_callid, NULL, unique_callid_cleanup);
  93
  94 static enum rotatestrategy {
  95         SEQUENTIAL = 1 << 0,     /* Original method - create a new file, in order */
  96         ROTATE = 1 << 1,         /* Rotate all files, such that the oldest file has the highest suffix */
  97         TIMESTAMP = 1 << 2,      /* Append the epoch timestamp onto the end of the archived file */
  98 } rotatestrategy = SEQUENTIAL;
  99
 100 static struct {
 101         unsigned int queue_log:1;
 102         unsigned int queue_log_to_file:1;
 103         unsigned int queue_adaptive_realtime:1;
 104 } logfiles = { 1 };
 105
 106 static char hostname[MAXHOSTNAMELEN];
 107
 108 enum logtypes {
 109         LOGTYPE_SYSLOG,
 110         LOGTYPE_FILE,
 111         LOGTYPE_CONSOLE,
 112 };
 113
 114 struct logchannel {
 115         /*! What to log to this channel */
 116         unsigned int logmask;
 117         /*! If this channel is disabled or not */
 118         int disabled;
 119         /*! syslog facility */
 120         int facility;
 121         /*! Verbosity level */
 122         int verbosity;
 123         /*! Type of log channel */
 124         enum logtypes type;
 125         /*! logfile logging file pointer */
 126         FILE *fileptr;
 127         /*! Filename */
 128         char filename[PATH_MAX];
 129         /*! field for linking to list */
 130         AST_LIST_ENTRY(logchannel) list;
 131         /*! Line number from configuration file */
 132         int lineno;
 133         /*! Components (levels) from last config load */
 134         char components[0];
 135 };
 136
 137 static AST_RWLIST_HEAD_STATIC(logchannels, logchannel);
 138
 139 enum logmsgtypes {
 140         LOGMSG_NORMAL = 0,
 141         LOGMSG_VERBOSE,
 142 };
 143
 144 struct logmsg {
 145         enum logmsgtypes type;
 146         int level;
 147         int line;
 148         int lwp;
 149         struct ast_callid *callid;
 150         AST_DECLARE_STRING_FIELDS(
 151                 AST_STRING_FIELD(date);
 152                 AST_STRING_FIELD(file);
 153                 AST_STRING_FIELD(function);
 154                 AST_STRING_FIELD(message);
 155                 AST_STRING_FIELD(level_name);
 156         );
 157         AST_LIST_ENTRY(logmsg) list;
 158 };
 159
 160 static void logmsg_free(struct logmsg *msg)
 161 {
 162         if (msg->callid) {
 163                 ast_callid_unref(msg->callid);
 164         }
 165         ast_free(msg);
 166 }
 167
 168 static AST_LIST_HEAD_STATIC(logmsgs, logmsg);
 169 static pthread_t logthread = AST_PTHREADT_NULL;
 170 static ast_cond_t logcond;
 171 static int close_logger_thread = 0;
 172
 173 static FILE *qlog;
 174
 175 /*! \brief Logging channels used in the Asterisk logging system
 176  *
 177  * The first 16 levels are reserved for system usage, and the remaining
 178  * levels are reserved for usage by dynamic levels registered via
 179  * ast_logger_register_level.
 180  */
 181
 182 /* Modifications to this array are protected by the rwlock in the
 183  * logchannels list.
 184  */
 185
 186 static char *levels[NUMLOGLEVELS] = {
 187         "DEBUG",
 188         "---EVENT---",          /* no longer used */
 189         "NOTICE",
 190         "WARNING",
 191         "ERROR",
 192         "VERBOSE",
 193         "DTMF",
 194 };
 195
 196 /*! \brief Colors used in the console for logging */
 197 static const int colors[NUMLOGLEVELS] = {
 198         COLOR_BRGREEN,
 199         COLOR_BRBLUE,           /* no longer used */
 200         COLOR_YELLOW,
 201         COLOR_BRRED,
 202         COLOR_RED,
 203         COLOR_GREEN,
 204         COLOR_BRGREEN,
 205         0,
 206         0,
 207         0,
 208         0,
 209         0,
 210         0,
 211         0,
 212         0,
 213         0,
 214         COLOR_BRBLUE,
 215         COLOR_BRBLUE,
 216         COLOR_BRBLUE,
 217         COLOR_BRBLUE,
 218         COLOR_BRBLUE,
 219         COLOR_BRBLUE,
 220         COLOR_BRBLUE,
 221         COLOR_BRBLUE,
 222         COLOR_BRBLUE,
 223         COLOR_BRBLUE,
 224         COLOR_BRBLUE,
 225         COLOR_BRBLUE,
 226         COLOR_BRBLUE,
 227         COLOR_BRBLUE,
 228         COLOR_BRBLUE,
 229         COLOR_BRBLUE,
 230 };
 231
 232 AST_THREADSTORAGE(verbose_buf);
 233 #define VERBOSE_BUF_INIT_SIZE   256
 234
 235 AST_THREADSTORAGE(log_buf);
 236 #define LOG_BUF_INIT_SIZE       256
 237
 238 static void logger_queue_init(void);
 239
 240 static unsigned int make_components(const char *s, int lineno, int *verbosity)
 241 {
 242         char *w;
 243         unsigned int res = 0;
 244         char *stringp = ast_strdupa(s);
 245         unsigned int x;
 246
 247         *verbosity = 3;
 248
 249         while ((w = strsep(&stringp, ","))) {
 250                 w = ast_skip_blanks(w);
 251
 252                 if (!strcmp(w, "*")) {
 253                         res = 0xFFFFFFFF;
 254                         break;
 255                 } else if (!strncasecmp(w, "verbose(", 8) && sscanf(w + 8, "%d)", verbosity) == 1) {
 256                         res |= (1 << __LOG_VERBOSE);
 257                         break;
 258                 } else for (x = 0; x < ARRAY_LEN(levels); x++) {
 259                         if (levels[x] && !strcasecmp(w, levels[x])) {
 260                                 res |= (1 << x);
 261                                 break;
 262                         }
 263                 }
 264         }
 265
 266         return res;
 267 }
 268
 269 static struct logchannel *make_logchannel(const char *channel, const char *components, int lineno)
 270 {
 271         struct logchannel *chan;
 272         char *facility;
 273         struct ast_tm tm;
 274         struct timeval now = ast_tvnow();
 275         char datestring[256];
 276
 277         if (ast_strlen_zero(channel) || !(chan = ast_calloc(1, sizeof(*chan) + strlen(components) + 1)))
 278                 return NULL;
 279
 280         strcpy(chan->components, components);
 281         chan->lineno = lineno;
 282
 283         if (!strcasecmp(channel, "console")) {
 284                 chan->type = LOGTYPE_CONSOLE;
 285         } else if (!strncasecmp(channel, "syslog", 6)) {
 286                 /*
 287                 * syntax is:
 288                 *  syslog.facility => level,level,level
 289                 */
 290                 facility = strchr(channel, '.');
 291                 if (!facility++ || !facility) {
 292                         facility = "local0";
 293                 }
 294
 295                 chan->facility = ast_syslog_facility(facility);
 296
 297                 if (chan->facility < 0) {
 298                         fprintf(stderr, "Logger Warning: bad syslog facility in logger.conf\n");
 299                         ast_free(chan);
 300                         return NULL;
 301                 }
 302
 303                 chan->type = LOGTYPE_SYSLOG;
 304                 ast_copy_string(chan->filename, channel, sizeof(chan->filename));
 305                 openlog("asterisk", LOG_PID, chan->facility);
 306         } else {
 307                 if (!ast_strlen_zero(hostname)) {
 308                         snprintf(chan->filename, sizeof(chan->filename), "%s/%s.%s",
 309                                  channel[0] != '/' ? ast_config_AST_LOG_DIR : "", channel, hostname);
 310                 } else {
 311                         snprintf(chan->filename, sizeof(chan->filename), "%s/%s",
 312                                  channel[0] != '/' ? ast_config_AST_LOG_DIR : "", channel);
 313                 }
 314                 if (!(chan->fileptr = fopen(chan->filename, "a"))) {
 315                         /* Can't do real logging here since we're called with a lock
 316                          * so log to any attached consoles */
 317                         ast_console_puts_mutable("ERROR: Unable to open log file '", __LOG_ERROR);
 318                         ast_console_puts_mutable(chan->filename, __LOG_ERROR);
 319                         ast_console_puts_mutable("': ", __LOG_ERROR);
 320                         ast_console_puts_mutable(strerror(errno), __LOG_ERROR);
 321                         ast_console_puts_mutable("'\n", __LOG_ERROR);
 322                         ast_free(chan);
 323                         return NULL;
 324                 } else {
 325                         /* Create our date/time */
 326                         ast_localtime(&now, &tm, NULL);
 327                         ast_strftime(datestring, sizeof(datestring), dateformat, &tm);
 328
 329                         fprintf(chan->fileptr, "[%s] Asterisk %s built by %s @ %s on a %s running %s on %s\n",
 330                                 datestring, ast_get_version(), ast_build_user, ast_build_hostname,
 331                                 ast_build_machine, ast_build_os, ast_build_date);
 332                         fflush(chan->fileptr);
 333                 }
 334                 chan->type = LOGTYPE_FILE;
 335         }
 336         chan->logmask = make_components(chan->components, lineno, &chan->verbosity);
 337
 338         return chan;
 339 }
 340
 341 static void init_logger_chain(int locked, const char *altconf)
 342 {
 343         struct logchannel *chan;
 344         struct ast_config *cfg;
 345         struct ast_variable *var;
 346         const char *s;
 347         struct ast_flags config_flags = { 0 };
 348
 349         display_callids = 1;
 350
 351         if (!(cfg = ast_config_load2(S_OR(altconf, "logger.conf"), "logger", config_flags)) || cfg == CONFIG_STATUS_FILEINVALID) {
 352                 return;
 353         }
 354
 355         /* delete our list of log channels */
 356         if (!locked) {
 357                 AST_RWLIST_WRLOCK(&logchannels);
 358         }
 359         while ((chan = AST_RWLIST_REMOVE_HEAD(&logchannels, list))) {
 360                 ast_free(chan);
 361         }
 362         global_logmask = 0;
 363         if (!locked) {
 364                 AST_RWLIST_UNLOCK(&logchannels);
 365         }
 366
 367         errno = 0;
 368         /* close syslog */
 369         closelog();
 370
 371         /* If no config file, we're fine, set default options. */
 372         if (!cfg) {
 373                 if (errno) {
 374                         fprintf(stderr, "Unable to open logger.conf: %s; default settings will be used.\n", strerror(errno));
 375                 } else {
 376                         fprintf(stderr, "Errors detected in logger.conf: see above; default settings will be used.\n");
 377                 }
 378                 if (!(chan = ast_calloc(1, sizeof(*chan)))) {
 379                         return;
 380                 }
 381                 chan->type = LOGTYPE_CONSOLE;
 382                 chan->logmask = __LOG_WARNING | __LOG_NOTICE | __LOG_ERROR;
 383                 if (!locked) {
 384                         AST_RWLIST_WRLOCK(&logchannels);
 385                 }
 386                 AST_RWLIST_INSERT_HEAD(&logchannels, chan, list);
 387                 global_logmask |= chan->logmask;
 388                 if (!locked) {
 389                         AST_RWLIST_UNLOCK(&logchannels);
 390                 }
 391                 return;
 392         }
 393
 394         if ((s = ast_variable_retrieve(cfg, "general", "appendhostname"))) {
 395                 if (ast_true(s)) {
 396                         if (gethostname(hostname, sizeof(hostname) - 1)) {
 397                                 ast_copy_string(hostname, "unknown", sizeof(hostname));
 398                                 fprintf(stderr, "What box has no hostname???\n");
 399                         }
 400                 } else
 401                         hostname[0] = '\0';
 402         } else
 403                 hostname[0] = '\0';
 404         if ((s = ast_variable_retrieve(cfg, "general", "display_callids"))) {
 405                 display_callids = ast_true(s);
 406         }
 407         if ((s = ast_variable_retrieve(cfg, "general", "dateformat")))
 408                 ast_copy_string(dateformat, s, sizeof(dateformat));
 409         else
 410                 ast_copy_string(dateformat, "%b %e %T", sizeof(dateformat));
 411         if ((s = ast_variable_retrieve(cfg, "general", "queue_log"))) {
 412                 logfiles.queue_log = ast_true(s);
 413         }
 414         if ((s = ast_variable_retrieve(cfg, "general", "queue_log_to_file"))) {
 415                 logfiles.queue_log_to_file = ast_true(s);
 416         }
 417         if ((s = ast_variable_retrieve(cfg, "general", "queue_log_name"))) {
 418                 ast_copy_string(queue_log_name, s, sizeof(queue_log_name));
 419         }
 420         if ((s = ast_variable_retrieve(cfg, "general", "exec_after_rotate"))) {
 421                 ast_copy_string(exec_after_rotate, s, sizeof(exec_after_rotate));
 422         }
 423         if ((s = ast_variable_retrieve(cfg, "general", "rotatestrategy"))) {
 424                 if (strcasecmp(s, "timestamp") == 0) {
 425                         rotatestrategy = TIMESTAMP;
 426                 } else if (strcasecmp(s, "rotate") == 0) {
 427                         rotatestrategy = ROTATE;
 428                 } else if (strcasecmp(s, "sequential") == 0) {
 429                         rotatestrategy = SEQUENTIAL;
 430                 } else {
 431                         fprintf(stderr, "Unknown rotatestrategy: %s\n", s);
 432                 }
 433         } else {
 434                 if ((s = ast_variable_retrieve(cfg, "general", "rotatetimestamp"))) {
 435                         rotatestrategy = ast_true(s) ? TIMESTAMP : SEQUENTIAL;
 436                         fprintf(stderr, "rotatetimestamp option has been deprecated.  Please use rotatestrategy instead.\n");
 437                 }
 438         }
 439
 440         if (!locked) {
 441                 AST_RWLIST_WRLOCK(&logchannels);
 442         }
 443         var = ast_variable_browse(cfg, "logfiles");
 444         for (; var; var = var->next) {
 445                 if (!(chan = make_logchannel(var->name, var->value, var->lineno))) {
 446                         /* Print error message directly to the consoles since the lock is held
 447                          * and we don't want to unlock with the list partially built */
 448                         ast_console_puts_mutable("ERROR: Unable to create log channel '", __LOG_ERROR);
 449                         ast_console_puts_mutable(var->name, __LOG_ERROR);
 450                         ast_console_puts_mutable("'\n", __LOG_ERROR);
 451                         continue;
 452                 }
 453                 AST_RWLIST_INSERT_HEAD(&logchannels, chan, list);
 454                 global_logmask |= chan->logmask;
 455         }
 456
 457         if (qlog) {
 458                 fclose(qlog);
 459                 qlog = NULL;
 460         }
 461
 462         if (!locked) {
 463                 AST_RWLIST_UNLOCK(&logchannels);
 464         }
 465
 466         ast_config_destroy(cfg);
 467 }
 468
 469 void ast_child_verbose(int level, const char *fmt, ...)
 470 {
 471         char *msg = NULL, *emsg = NULL, *sptr, *eptr;
 472         va_list ap, aq;
 473         int size;
 474
 475         va_start(ap, fmt);
 476         va_copy(aq, ap);
 477         if ((size = vsnprintf(msg, 0, fmt, ap)) < 0) {
 478                 va_end(ap);
 479                 va_end(aq);
 480                 return;
 481         }
 482         va_end(ap);
 483
 484         if (!(msg = ast_malloc(size + 1))) {
 485                 va_end(aq);
 486                 return;
 487         }
 488
 489         vsnprintf(msg, size + 1, fmt, aq);
 490         va_end(aq);
 491
 492         if (!(emsg = ast_malloc(size * 2 + 1))) {
 493                 ast_free(msg);
 494                 return;
 495         }
 496
 497         for (sptr = msg, eptr = emsg; ; sptr++) {
 498                 if (*sptr == '"') {
 499                         *eptr++ = '\\';
 500                 }
 501                 *eptr++ = *sptr;
 502                 if (*sptr == '\0') {
 503                         break;
 504                 }
 505         }
 506         ast_free(msg);
 507
 508         fprintf(stdout, "verbose \"%s\" %d\n", emsg, level);
 509         fflush(stdout);
 510         ast_free(emsg);
 511 }
 512
 513 void ast_queue_log(const char *queuename, const char *callid, const char *agent, const char *event, const char *fmt, ...)
 514 {
 515         va_list ap;
 516         struct timeval tv;
 517         struct ast_tm tm;
 518         char qlog_msg[8192];
 519         int qlog_len;
 520         char time_str[30];
 521
 522         if (!logger_initialized) {
 523                 /* You are too early.  We are not open yet! */
 524                 return;
 525         }
 526         if (!queuelog_init) {
 527                 AST_RWLIST_WRLOCK(&logchannels);
 528                 if (!queuelog_init) {
 529                         /*
 530                          * We have delayed initializing the queue logging system so
 531                          * preloaded realtime modules can get up.  We must initialize
 532                          * now since someone is trying to log something.
 533                          */
 534                         logger_queue_init();
 535                         queuelog_init = 1;
 536                         AST_RWLIST_UNLOCK(&logchannels);
 537                         ast_queue_log("NONE", "NONE", "NONE", "QUEUESTART", "%s", "");
 538                 } else {
 539                         AST_RWLIST_UNLOCK(&logchannels);
 540                 }
 541         }
 542
 543         if (ast_check_realtime("queue_log")) {
 544                 tv = ast_tvnow();
 545                 ast_localtime(&tv, &tm, NULL);
 546                 ast_strftime(time_str, sizeof(time_str), "%F %T.%6q", &tm);
 547                 va_start(ap, fmt);
 548                 vsnprintf(qlog_msg, sizeof(qlog_msg), fmt, ap);
 549                 va_end(ap);
 550                 if (logfiles.queue_adaptive_realtime) {
 551                         AST_DECLARE_APP_ARGS(args,
 552                                 AST_APP_ARG(data)[5];
 553                         );
 554                         AST_NONSTANDARD_APP_ARGS(args, qlog_msg, '|');
 555                         /* Ensure fields are large enough to receive data */
 556                         ast_realtime_require_field("queue_log",
 557                                 "data1", RQ_CHAR, strlen(S_OR(args.data[0], "")),
 558                                 "data2", RQ_CHAR, strlen(S_OR(args.data[1], "")),
 559                                 "data3", RQ_CHAR, strlen(S_OR(args.data[2], "")),
 560                                 "data4", RQ_CHAR, strlen(S_OR(args.data[3], "")),
 561                                 "data5", RQ_CHAR, strlen(S_OR(args.data[4], "")),
 562                                 SENTINEL);
 563
 564                         /* Store the log */
 565                         ast_store_realtime("queue_log", "time", time_str,
 566                                 "callid", callid,
 567                                 "queuename", queuename,
 568                                 "agent", agent,
 569                                 "event", event,
 570                                 "data1", S_OR(args.data[0], ""),
 571                                 "data2", S_OR(args.data[1], ""),
 572                                 "data3", S_OR(args.data[2], ""),
 573                                 "data4", S_OR(args.data[3], ""),
 574                                 "data5", S_OR(args.data[4], ""),
 575                                 SENTINEL);
 576                 } else {
 577                         ast_store_realtime("queue_log", "time", time_str,
 578                                 "callid", callid,
 579                                 "queuename", queuename,
 580                                 "agent", agent,
 581                                 "event", event,
 582                                 "data", qlog_msg,
 583                                 SENTINEL);
 584                 }
 585
 586                 if (!logfiles.queue_log_to_file) {
 587                         return;
 588                 }
 589         }
 590
 591         if (qlog) {
 592                 va_start(ap, fmt);
 593                 qlog_len = snprintf(qlog_msg, sizeof(qlog_msg), "%ld|%s|%s|%s|%s|", (long)time(NULL), callid, queuename, agent, event);
 594                 vsnprintf(qlog_msg + qlog_len, sizeof(qlog_msg) - qlog_len, fmt, ap);
 595                 va_end(ap);
 596                 AST_RWLIST_RDLOCK(&logchannels);
 597                 if (qlog) {
 598                         fprintf(qlog, "%s\n", qlog_msg);
 599                         fflush(qlog);
 600                 }
 601                 AST_RWLIST_UNLOCK(&logchannels);
 602         }
 603 }
 604
 605 static int rotate_file(const char *filename)
 606 {
 607         char old[PATH_MAX];
 608         char new[PATH_MAX];
 609         int x, y, which, found, res = 0, fd;
 610         char *suffixes[4] = { "", ".gz", ".bz2", ".Z" };
 611
 612         switch (rotatestrategy) {
 613         case SEQUENTIAL:
 614                 for (x = 0; ; x++) {
 615                         snprintf(new, sizeof(new), "%s.%d", filename, x);
 616                         fd = open(new, O_RDONLY);
 617                         if (fd > -1)
 618                                 close(fd);
 619                         else
 620                                 break;
 621                 }
 622                 if (rename(filename, new)) {
 623                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", filename, new);
 624                         res = -1;
 625                 } else {
 626                         filename = new;
 627                 }
 628                 break;
 629         case TIMESTAMP:
 630                 snprintf(new, sizeof(new), "%s.%ld", filename, (long)time(NULL));
 631                 if (rename(filename, new)) {
 632                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", filename, new);
 633                         res = -1;
 634                 } else {
 635                         filename = new;
 636                 }
 637                 break;
 638         case ROTATE:
 639                 /* Find the next empty slot, including a possible suffix */
 640                 for (x = 0; ; x++) {
 641                         found = 0;
 642                         for (which = 0; which < ARRAY_LEN(suffixes); which++) {
 643                                 snprintf(new, sizeof(new), "%s.%d%s", filename, x, suffixes[which]);
 644                                 fd = open(new, O_RDONLY);
 645                                 if (fd > -1) {
 646                                         close(fd);
 647                                         found = 1;
 648                                         break;
 649                                 }
 650                         }
 651                         if (!found) {
 652                                 break;
 653                         }
 654                 }
 655
 656                 /* Found an empty slot */
 657                 for (y = x; y > 0; y--) {
 658                         for (which = 0; which < ARRAY_LEN(suffixes); which++) {
 659                                 snprintf(old, sizeof(old), "%s.%d%s", filename, y - 1, suffixes[which]);
 660                                 fd = open(old, O_RDONLY);
 661                                 if (fd > -1) {
 662                                         /* Found the right suffix */
 663                                         close(fd);
 664                                         snprintf(new, sizeof(new), "%s.%d%s", filename, y, suffixes[which]);
 665                                         if (rename(old, new)) {
 666                                                 fprintf(stderr, "Unable to rename file '%s' to '%s'\n", old, new);
 667                                                 res = -1;
 668                                         }
 669                                         break;
 670                                 }
 671                         }
 672                 }
 673
 674                 /* Finally, rename the current file */
 675                 snprintf(new, sizeof(new), "%s.0", filename);
 676                 if (rename(filename, new)) {
 677                         fprintf(stderr, "Unable to rename file '%s' to '%s'\n", filename, new);
 678                         res = -1;
 679                 } else {
 680                         filename = new;
 681                 }
 682         }
 683
 684         if (!ast_strlen_zero(exec_after_rotate)) {
 685                 struct ast_channel *c = ast_dummy_channel_alloc();
 686                 char buf[512];
 687
 688                 pbx_builtin_setvar_helper(c, "filename", filename);
 689                 pbx_substitute_variables_helper(c, exec_after_rotate, buf, sizeof(buf));
 690                 if (c) {
 691                         c = ast_channel_unref(c);
 692                 }
 693                 if (ast_safe_system(buf) == -1) {
 694                         ast_log(LOG_WARNING, "error executing '%s'\n", buf);
 695                 }
 696         }
 697         return res;
 698 }
 699
 700 /*!
 701  * \internal
 702  * \brief Start the realtime queue logging if configured.
 703  *
 704  * \retval TRUE if not to open queue log file.
 705  */
 706 static int logger_queue_rt_start(void)
 707 {
 708         if (ast_check_realtime("queue_log")) {
 709                 if (!ast_realtime_require_field("queue_log",
 710                         "time", RQ_DATETIME, 26,
 711                         "data1", RQ_CHAR, 20,
 712                         "data2", RQ_CHAR, 20,
 713                         "data3", RQ_CHAR, 20,
 714                         "data4", RQ_CHAR, 20,
 715                         "data5", RQ_CHAR, 20,
 716                         SENTINEL)) {
 717                         logfiles.queue_adaptive_realtime = 1;
 718                 } else {
 719                         logfiles.queue_adaptive_realtime = 0;
 720                 }
 721
 722                 if (!logfiles.queue_log_to_file) {
 723                         /* Don't open the log file. */
 724                         return 1;
 725                 }
 726         }
 727         return 0;
 728 }
 729
 730 /*!
 731  * \internal
 732  * \brief Rotate the queue log file and restart.
 733  *
 734  * \param queue_rotate Log queue rotation mode.
 735  *
 736  * \note Assumes logchannels is write locked on entry.
 737  *
 738  * \retval 0 on success.
 739  * \retval -1 on error.
 740  */
 741 static int logger_queue_restart(int queue_rotate)
 742 {
 743         int res = 0;
 744         char qfname[PATH_MAX];
 745
 746         if (logger_queue_rt_start()) {
 747                 return res;
 748         }
 749
 750         snprintf(qfname, sizeof(qfname), "%s/%s", ast_config_AST_LOG_DIR, queue_log_name);
 751         if (qlog) {
 752                 /* Just in case it was still open. */
 753                 fclose(qlog);
 754                 qlog = NULL;
 755         }
 756         if (queue_rotate) {
 757                 rotate_file(qfname);
 758         }
 759
 760         /* Open the log file. */
 761         qlog = fopen(qfname, "a");
 762         if (!qlog) {
 763                 ast_log(LOG_ERROR, "Unable to create queue log: %s\n", strerror(errno));
 764                 res = -1;
 765         }
 766         return res;
 767 }
 768
 769 static int reload_logger(int rotate, const char *altconf)
 770 {
 771         int queue_rotate = rotate;
 772         struct logchannel *f;
 773         int res = 0;
 774
 775         AST_RWLIST_WRLOCK(&logchannels);
 776
 777         if (qlog) {
 778                 if (rotate < 0) {
 779                         /* Check filesize - this one typically doesn't need an auto-rotate */
 780                         if (ftello(qlog) > 0x40000000) { /* Arbitrarily, 1 GB */
 781                                 fclose(qlog);
 782                                 qlog = NULL;
 783                         } else {
 784                                 queue_rotate = 0;
 785                         }
 786                 } else {
 787                         fclose(qlog);
 788                         qlog = NULL;
 789                 }
 790         } else {
 791                 queue_rotate = 0;
 792         }
 793
 794         ast_mkdir(ast_config_AST_LOG_DIR, 0777);
 795
 796         AST_RWLIST_TRAVERSE(&logchannels, f, list) {
 797                 if (f->disabled) {
 798                         f->disabled = 0;        /* Re-enable logging at reload */
 799                         /*** DOCUMENTATION
 800                                 <managerEventInstance>
 801                                         <synopsis>Raised when a logging channel is re-enabled after a reload operation.</synopsis>
 802                                         <syntax>
 803                                                 <parameter name="Channel">
 804                                                         <para>The name of the logging channel.</para>
 805                                                 </parameter>
 806                                         </syntax>
 807                                 </managerEventInstance>
 808                         ***/
 809                         manager_event(EVENT_FLAG_SYSTEM, "LogChannel", "Channel: %s\r\nEnabled: Yes\r\n", f->filename);
 810                 }
 811                 if (f->fileptr && (f->fileptr != stdout) && (f->fileptr != stderr)) {
 812                         int rotate_this = 0;
 813                         if (ftello(f->fileptr) > 0x40000000) { /* Arbitrarily, 1 GB */
 814                                 /* Be more proactive about rotating massive log files */
 815                                 rotate_this = 1;
 816                         }
 817                         fclose(f->fileptr);     /* Close file */
 818                         f->fileptr = NULL;
 819                         if (rotate || rotate_this) {
 820                                 rotate_file(f->filename);
 821                         }
 822                 }
 823         }
 824
 825         filesize_reload_needed = 0;
 826
 827         init_logger_chain(1 /* locked */, altconf);
 828
 829         ast_unload_realtime("queue_log");
 830         if (logfiles.queue_log) {
 831                 res = logger_queue_restart(queue_rotate);
 832                 AST_RWLIST_UNLOCK(&logchannels);
 833                 ast_queue_log("NONE", "NONE", "NONE", "CONFIGRELOAD", "%s", "");
 834                 ast_verb(1, "Asterisk Queue Logger restarted\n");
 835         } else {
 836                 AST_RWLIST_UNLOCK(&logchannels);
 837         }
 838
 839         return res;
 840 }
 841
 842 /*! \brief Reload the logger module without rotating log files (also used from loader.c during
 843         a full Asterisk reload) */
 844 int logger_reload(void)
 845 {
 846         if (reload_logger(0, NULL)) {
 847                 return RESULT_FAILURE;
 848         }
 849         return RESULT_SUCCESS;
 850 }
 851
 852 static char *handle_logger_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 853 {
 854         switch (cmd) {
 855         case CLI_INIT:
 856                 e->command = "logger reload";
 857                 e->usage =
 858                         "Usage: logger reload [<alt-conf>]\n"
 859                         "       Reloads the logger subsystem state.  Use after restarting syslogd(8) if you are using syslog logging.\n";
 860                 return NULL;
 861         case CLI_GENERATE:
 862                 return NULL;
 863         }
 864         if (reload_logger(0, a->argc == 3 ? a->argv[2] : NULL)) {
 865                 ast_cli(a->fd, "Failed to reload the logger\n");
 866                 return CLI_FAILURE;
 867         }
 868         return CLI_SUCCESS;
 869 }
 870
 871 static char *handle_logger_rotate(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 872 {
 873         switch (cmd) {
 874         case CLI_INIT:
 875                 e->command = "logger rotate";
 876                 e->usage =
 877                         "Usage: logger rotate\n"
 878                         "       Rotates and Reopens the log files.\n";
 879                 return NULL;
 880         case CLI_GENERATE:
 881                 return NULL;
 882         }
 883         if (reload_logger(1, NULL)) {
 884                 ast_cli(a->fd, "Failed to reload the logger and rotate log files\n");
 885                 return CLI_FAILURE;
 886         }
 887         return CLI_SUCCESS;
 888 }
 889
 890 static char *handle_logger_set_level(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 891 {
 892         int x;
 893         int state;
 894         int level = -1;
 895
 896         switch (cmd) {
 897         case CLI_INIT:
 898                 e->command = "logger set level {DEBUG|NOTICE|WARNING|ERROR|VERBOSE|DTMF} {on|off}";
 899                 e->usage =
 900                         "Usage: logger set level {DEBUG|NOTICE|WARNING|ERROR|VERBOSE|DTMF} {on|off}\n"
 901                         "       Set a specific log level to enabled/disabled for this console.\n";
 902                 return NULL;
 903         case CLI_GENERATE:
 904                 return NULL;
 905         }
 906
 907         if (a->argc < 5)
 908                 return CLI_SHOWUSAGE;
 909
 910         AST_RWLIST_WRLOCK(&logchannels);
 911
 912         for (x = 0; x < ARRAY_LEN(levels); x++) {
 913                 if (levels[x] && !strcasecmp(a->argv[3], levels[x])) {
 914                         level = x;
 915                         break;
 916                 }
 917         }
 918
 919         AST_RWLIST_UNLOCK(&logchannels);
 920
 921         state = ast_true(a->argv[4]) ? 1 : 0;
 922
 923         if (level != -1) {
 924                 ast_console_toggle_loglevel(a->fd, level, state);
 925                 ast_cli(a->fd, "Logger status for '%s' has been set to '%s'.\n", levels[level], state ? "on" : "off");
 926         } else
 927                 return CLI_SHOWUSAGE;
 928
 929         return CLI_SUCCESS;
 930 }
 931
 932 /*! \brief CLI command to show logging system configuration */
 933 static char *handle_logger_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 934 {
 935 #define FORMATL "%-35.35s %-8.8s %-9.9s "
 936         struct logchannel *chan;
 937         switch (cmd) {
 938         case CLI_INIT:
 939                 e->command = "logger show channels";
 940                 e->usage =
 941                         "Usage: logger show channels\n"
 942                         "       List configured logger channels.\n";
 943                 return NULL;
 944         case CLI_GENERATE:
 945                 return NULL;
 946         }
 947         ast_cli(a->fd, FORMATL, "Channel", "Type", "Status");
 948         ast_cli(a->fd, "Configuration\n");
 949         ast_cli(a->fd, FORMATL, "-------", "----", "------");
 950         ast_cli(a->fd, "-------------\n");
 951         AST_RWLIST_RDLOCK(&logchannels);
 952         AST_RWLIST_TRAVERSE(&logchannels, chan, list) {
 953                 unsigned int level;
 954
 955                 ast_cli(a->fd, FORMATL, chan->filename, chan->type == LOGTYPE_CONSOLE ? "Console" : (chan->type == LOGTYPE_SYSLOG ? "Syslog" : "File"),
 956                         chan->disabled ? "Disabled" : "Enabled");
 957                 ast_cli(a->fd, " - ");
 958                 for (level = 0; level < ARRAY_LEN(levels); level++) {
 959                         if ((chan->logmask & (1 << level)) && levels[level]) {
 960                                 ast_cli(a->fd, "%s ", levels[level]);
 961                         }
 962                 }
 963                 ast_cli(a->fd, "\n");
 964         }
 965         AST_RWLIST_UNLOCK(&logchannels);
 966         ast_cli(a->fd, "\n");
 967
 968         return CLI_SUCCESS;
 969 }
 970
 971 struct verb {
 972         void (*verboser)(const char *string);
 973         AST_LIST_ENTRY(verb) list;
 974 };
 975
 976 static AST_RWLIST_HEAD_STATIC(verbosers, verb);
 977
 978 static struct ast_cli_entry cli_logger[] = {
 979         AST_CLI_DEFINE(handle_logger_show_channels, "List configured log channels"),
 980         AST_CLI_DEFINE(handle_logger_reload, "Reopens the log files"),
 981         AST_CLI_DEFINE(handle_logger_rotate, "Rotates and reopens the log files"),
 982         AST_CLI_DEFINE(handle_logger_set_level, "Enables/Disables a specific logging level for this console")
 983 };
 984
 985 static void _handle_SIGXFSZ(int sig)
 986 {
 987         /* Indicate need to reload */
 988         filesize_reload_needed = 1;
 989 }
 990
 991 static struct sigaction handle_SIGXFSZ = {
 992         .sa_handler = _handle_SIGXFSZ,
 993         .sa_flags = SA_RESTART,
 994 };
 995
 996 static void ast_log_vsyslog(struct logmsg *msg)
 997 {
 998         char buf[BUFSIZ];
 999         int syslog_level = ast_syslog_priority_from_loglevel(msg->level);
1000
1001         if (syslog_level < 0) {
1002                 /* we are locked here, so cannot ast_log() */
1003                 fprintf(stderr, "ast_log_vsyslog called with bogus level: %d\n", msg->level);
1004                 return;
1005         }
1006
1007         snprintf(buf, sizeof(buf), "%s[%d]: %s:%d in %s: %s",
1008                  levels[msg->level], msg->lwp, msg->file, msg->line, msg->function, msg->message);
1009
1010         term_strip(buf, buf, strlen(buf) + 1);
1011         syslog(syslog_level, "%s", buf);
1012 }
1013
1014 /* These gymnastics are due to platforms which designate char as unsigned by
1015  * default. Level is the negative character -- offset by 1, because \0 is the
1016  * EOS delimiter. */
1017 #define VERBOSE_MAGIC2LEVEL(x) (((char) -*(signed char *) (x)) - 1)
1018 #define VERBOSE_HASMAGIC(x)     (*(signed char *) (x) < 0)
1019
1020 /*! \brief Print a normal log message to the channels */
1021 static void logger_print_normal(struct logmsg *logmsg)
1022 {
1023         struct logchannel *chan = NULL;
1024         char buf[BUFSIZ];
1025         struct verb *v = NULL;
1026         int level = 0;
1027
1028         if (logmsg->level == __LOG_VERBOSE) {
1029                 char *tmpmsg = ast_strdupa(logmsg->message + 1);
1030                 level = VERBOSE_MAGIC2LEVEL(logmsg->message);
1031                 /* Iterate through the list of verbosers and pass them the log message string */
1032                 AST_RWLIST_RDLOCK(&verbosers);
1033                 AST_RWLIST_TRAVERSE(&verbosers, v, list)
1034                         v->verboser(logmsg->message);
1035                 AST_RWLIST_UNLOCK(&verbosers);
1036                 ast_string_field_set(logmsg, message, tmpmsg);
1037         }
1038
1039         AST_RWLIST_RDLOCK(&logchannels);
1040
1041         if (!AST_RWLIST_EMPTY(&logchannels)) {
1042                 AST_RWLIST_TRAVERSE(&logchannels, chan, list) {
1043                         char call_identifier_str[13];
1044
1045                         if (logmsg->callid) {
1046                                 snprintf(call_identifier_str, sizeof(call_identifier_str), "[C-%08x]", logmsg->callid->call_identifier);
1047                         } else {
1048                                 call_identifier_str[0] = '\0';
1049                         }
1050
1051
1052                         /* If the channel is disabled, then move on to the next one */
1053                         if (chan->disabled) {
1054                                 continue;
1055                         }
1056                         if (logmsg->level == __LOG_VERBOSE && level > chan->verbosity) {
1057                                 continue;
1058                         }
1059
1060                         /* Check syslog channels */
1061                         if (chan->type == LOGTYPE_SYSLOG && (chan->logmask & (1 << logmsg->level))) {
1062                                 ast_log_vsyslog(logmsg);
1063                         /* Console channels */
1064                         } else if (chan->type == LOGTYPE_CONSOLE && (chan->logmask & (1 << logmsg->level))) {
1065                                 char linestr[128];
1066                                 char tmp1[80], tmp2[80], tmp3[80], tmp4[80];
1067
1068                                 /* If the level is verbose, then skip it */
1069                                 if (logmsg->level == __LOG_VERBOSE)
1070                                         continue;
1071
1072                                 /* Turn the numerical line number into a string */
1073                                 snprintf(linestr, sizeof(linestr), "%d", logmsg->line);
1074                                 /* Build string to print out */
1075                                 snprintf(buf, sizeof(buf), "[%s] %s[%d]%s: %s:%s %s: %s",
1076                                          logmsg->date,
1077                                          term_color(tmp1, logmsg->level_name, colors[logmsg->level], 0, sizeof(tmp1)),
1078                                          logmsg->lwp,
1079                                          call_identifier_str,
1080                                          term_color(tmp2, logmsg->file, COLOR_BRWHITE, 0, sizeof(tmp2)),
1081                                          term_color(tmp3, linestr, COLOR_BRWHITE, 0, sizeof(tmp3)),
1082                                          term_color(tmp4, logmsg->function, COLOR_BRWHITE, 0, sizeof(tmp4)),
1083                                          logmsg->message);
1084                                 /* Print out */
1085                                 ast_console_puts_mutable(buf, logmsg->level);
1086                         /* File channels */
1087                         } else if (chan->type == LOGTYPE_FILE && (chan->logmask & (1 << logmsg->level))) {
1088                                 int res = 0;
1089
1090                                 /* If no file pointer exists, skip it */
1091                                 if (!chan->fileptr) {
1092                                         continue;
1093                                 }
1094
1095                                 /* Print out to the file */
1096                                 res = fprintf(chan->fileptr, "[%s] %s[%d]%s %s: %s",
1097                                               logmsg->date, logmsg->level_name, logmsg->lwp, call_identifier_str,
1098                                               logmsg->file, term_strip(buf, logmsg->message, BUFSIZ));
1099                                 if (res <= 0 && !ast_strlen_zero(logmsg->message)) {
1100                                         fprintf(stderr, "**** Asterisk Logging Error: ***********\n");
1101                                         if (errno == ENOMEM || errno == ENOSPC)
1102                                                 fprintf(stderr, "Asterisk logging error: Out of disk space, can't log to log file %s\n", chan->filename);
1103                                         else
1104                                                 fprintf(stderr, "Logger Warning: Unable to write to log file '%s': %s (disabled)\n", chan->filename, strerror(errno));
1105                                         /*** DOCUMENTATION
1106                                                 <managerEventInstance>
1107                                                         <synopsis>Raised when a logging channel is disabled.</synopsis>
1108                                                         <syntax>
1109                                                                 <parameter name="Channel">
1110                                                                         <para>The name of the logging channel.</para>
1111                                                                 </parameter>
1112                                                         </syntax>
1113                                                 </managerEventInstance>
1114                                         ***/
1115                                         manager_event(EVENT_FLAG_SYSTEM, "LogChannel", "Channel: %s\r\nEnabled: No\r\nReason: %d - %s\r\n", chan->filename, errno, strerror(errno));
1116                                         chan->disabled = 1;
1117                                 } else if (res > 0) {
1118                                         fflush(chan->fileptr);
1119                                 }
1120                         }
1121                 }
1122         } else if (logmsg->level != __LOG_VERBOSE) {
1123                 fputs(logmsg->message, stdout);
1124         }
1125
1126         AST_RWLIST_UNLOCK(&logchannels);
1127
1128         /* If we need to reload because of the file size, then do so */
1129         if (filesize_reload_needed) {
1130                 reload_logger(-1, NULL);
1131                 ast_verb(1, "Rotated Logs Per SIGXFSZ (Exceeded file size limit)\n");
1132         }
1133
1134         return;
1135 }
1136
1137 /*! \brief Actual logging thread */
1138 static void *logger_thread(void *data)
1139 {
1140         struct logmsg *next = NULL, *msg = NULL;
1141
1142         for (;;) {
1143                 /* We lock the message list, and see if any message exists... if not we wait on the condition to be signalled */
1144                 AST_LIST_LOCK(&logmsgs);
1145                 if (AST_LIST_EMPTY(&logmsgs)) {
1146                         if (close_logger_thread) {
1147                                 AST_LIST_UNLOCK(&logmsgs);
1148                                 break;
1149                         } else {
1150                                 ast_cond_wait(&logcond, &logmsgs.lock);
1151                         }
1152                 }
1153                 next = AST_LIST_FIRST(&logmsgs);
1154                 AST_LIST_HEAD_INIT_NOLOCK(&logmsgs);
1155                 AST_LIST_UNLOCK(&logmsgs);
1156
1157                 /* Otherwise go through and process each message in the order added */
1158                 while ((msg = next)) {
1159                         /* Get the next entry now so that we can free our current structure later */
1160                         next = AST_LIST_NEXT(msg, list);
1161
1162                         /* Depending on the type, send it to the proper function */
1163                         logger_print_normal(msg);
1164
1165                         /* Free the data since we are done */
1166                         logmsg_free(msg);
1167                 }
1168
1169                 /* If we should stop, then stop */
1170                 if (close_logger_thread)
1171                         break;
1172         }
1173
1174         return NULL;
1175 }
1176
1177 /*!
1178  * \internal
1179  * \brief Initialize the logger queue.
1180  *
1181  * \note Assumes logchannels is write locked on entry.
1182  *
1183  * \return Nothing
1184  */
1185 static void logger_queue_init(void)
1186 {
1187         ast_unload_realtime("queue_log");
1188         if (logfiles.queue_log) {
1189                 char qfname[PATH_MAX];
1190
1191                 if (logger_queue_rt_start()) {
1192                         return;
1193                 }
1194
1195                 /* Open the log file. */
1196                 snprintf(qfname, sizeof(qfname), "%s/%s", ast_config_AST_LOG_DIR,
1197                         queue_log_name);
1198                 if (qlog) {
1199                         /* Just in case it was already open. */
1200                         fclose(qlog);
1201                 }
1202                 qlog = fopen(qfname, "a");
1203                 if (!qlog) {
1204                         ast_log(LOG_ERROR, "Unable to create queue log: %s\n", strerror(errno));
1205                 }
1206         }
1207 }
1208
1209 int init_logger(void)
1210 {
1211         /* auto rotate if sig SIGXFSZ comes a-knockin */
1212         sigaction(SIGXFSZ, &handle_SIGXFSZ, NULL);
1213
1214         /* start logger thread */
1215         ast_cond_init(&logcond, NULL);
1216         if (ast_pthread_create(&logthread, NULL, logger_thread, NULL) < 0) {
1217                 ast_cond_destroy(&logcond);
1218                 return -1;
1219         }
1220
1221         /* register the logger cli commands */
1222         ast_cli_register_multiple(cli_logger, ARRAY_LEN(cli_logger));
1223
1224         ast_mkdir(ast_config_AST_LOG_DIR, 0777);
1225
1226         /* create log channels */
1227         init_logger_chain(0 /* locked */, NULL);
1228         logger_initialized = 1;
1229
1230         return 0;
1231 }
1232
1233 void close_logger(void)
1234 {
1235         struct logchannel *f = NULL;
1236
1237         logger_initialized = 0;
1238
1239         /* Stop logger thread */
1240         AST_LIST_LOCK(&logmsgs);
1241         close_logger_thread = 1;
1242         ast_cond_signal(&logcond);
1243         AST_LIST_UNLOCK(&logmsgs);
1244
1245         if (logthread != AST_PTHREADT_NULL)
1246                 pthread_join(logthread, NULL);
1247
1248         AST_RWLIST_WRLOCK(&logchannels);
1249
1250         if (qlog) {
1251                 fclose(qlog);
1252                 qlog = NULL;
1253         }
1254
1255         AST_RWLIST_TRAVERSE(&logchannels, f, list) {
1256                 if (f->fileptr && (f->fileptr != stdout) && (f->fileptr != stderr)) {
1257                         fclose(f->fileptr);
1258                         f->fileptr = NULL;
1259                 }
1260         }
1261
1262         closelog(); /* syslog */
1263
1264         AST_RWLIST_UNLOCK(&logchannels);
1265 }
1266
1267 void ast_callid_strnprint(char *buffer, size_t buffer_size, struct ast_callid *callid)
1268 {
1269         snprintf(buffer, buffer_size, "[C-%08x]", callid->call_identifier);
1270 }
1271
1272 struct ast_callid *ast_create_callid(void)
1273 {
1274         struct ast_callid *call;
1275         int using;
1276
1277         if (!(call = ao2_alloc(sizeof(struct ast_callid), NULL))) {
1278                 ast_log(LOG_ERROR, "Could not allocate callid struct.\n");
1279                 return NULL;
1280         }
1281
1282         using = ast_atomic_fetchadd_int(&next_unique_callid, +1);
1283
1284         call->call_identifier = using;
1285         ast_debug(3, "CALL_ID [C-%08x] created by thread.\n", call->call_identifier);
1286         return call;
1287 }
1288
1289 struct ast_callid *ast_read_threadstorage_callid(void)
1290 {
1291         struct ast_callid **callid;
1292         callid = ast_threadstorage_get(&unique_callid, sizeof(struct ast_callid **));
1293         if (callid && *callid) {
1294                 ast_callid_ref(*callid);
1295                 return *callid;
1296         }
1297
1298         return NULL;
1299
1300 }
1301
1302 int ast_callid_threadassoc_add(struct ast_callid *callid)
1303 {
1304         struct ast_callid **pointing;
1305         pointing = ast_threadstorage_get(&unique_callid, sizeof(struct ast_callid **));
1306         if (!(pointing)) {
1307                 ast_log(LOG_ERROR, "Failed to allocate thread storage.\n");
1308                 return -1;
1309         }
1310
1311         if (!(*pointing)) {
1312                 /* callid will be unreffed at thread destruction */
1313                 ast_callid_ref(callid);
1314                 *pointing = callid;
1315                 ast_debug(3, "CALL_ID [C-%08x] bound to thread.\n", callid->call_identifier);
1316         } else {
1317                 ast_log(LOG_WARNING, "Attempted to ast_callid_threadassoc_add on thread already associated with a callid.\n");
1318                 return 1;
1319         }
1320
1321         return 0;
1322 }
1323
1324 int ast_callid_threadassoc_remove()
1325 {
1326         struct ast_callid **pointing;
1327         pointing = ast_threadstorage_get(&unique_callid, sizeof(struct ast_callid **));
1328         if (!(pointing)) {
1329                 ast_log(LOG_ERROR, "Failed to allocate thread storage.\n");
1330                 return -1;
1331         }
1332
1333         if (!(*pointing)) {
1334                 ast_log(LOG_ERROR, "Tried to clean callid thread storage with no callid in thread storage.\n");
1335                 return -1;
1336         } else {
1337                 ast_debug(3, "Call_ID [C-%08x] being removed from thread.\n", (*pointing)->call_identifier);
1338                 *pointing = ast_callid_unref(*pointing);
1339                 return 0;
1340         }
1341 }
1342
1343 int ast_callid_threadstorage_auto(struct ast_callid **callid)
1344 {
1345         struct ast_callid *tmp;
1346
1347         /* Start by trying to see if a callid is available from thread storage */
1348         tmp = ast_read_threadstorage_callid();
1349         if (tmp) {
1350                 *callid = tmp;
1351                 return 0;
1352         }
1353
1354         /* If that failed, try to create a new one and bind it. */
1355         tmp = ast_create_callid();
1356         if (tmp) {
1357                 ast_callid_threadassoc_add(tmp);
1358                 *callid = tmp;
1359                 return 1;
1360         }
1361
1362         /* If neither worked, then something must have gone wrong. */
1363         return -1;
1364 }
1365
1366 void ast_callid_threadstorage_auto_clean(struct ast_callid *callid, int callid_created)
1367 {
1368         if (callid) {
1369                 /* If the callid was created rather than simply grabbed from the thread storage, we need to unbind here. */
1370                 if (callid_created == 1) {
1371                         ast_callid_threadassoc_remove();
1372                 }
1373                 callid = ast_callid_unref(callid);
1374         }
1375 }
1376
1377 /*!
1378  * \internal
1379  * \brief thread storage cleanup function for unique_callid
1380  */
1381 static void unique_callid_cleanup(void *data)
1382 {
1383         struct ast_callid **callid = data;
1384
1385         if (*callid) {
1386                 ast_callid_unref(*callid);
1387         }
1388
1389         ast_free(data);
1390 }
1391
1392 /*!
1393  * \brief send log messages to syslog and/or the console
1394  */
1395 static void __attribute__((format(printf, 6, 0))) ast_log_full(int level, const char *file, int line, const char *function, struct ast_callid *callid, const char *fmt, va_list ap)
1396 {
1397         struct logmsg *logmsg = NULL;
1398         struct ast_str *buf = NULL;
1399         struct ast_tm tm;
1400         struct timeval now = ast_tvnow();
1401         int res = 0;
1402         char datestring[256];
1403
1404         if (!(buf = ast_str_thread_get(&log_buf, LOG_BUF_INIT_SIZE)))
1405                 return;
1406
1407         if (level != __LOG_VERBOSE && AST_RWLIST_EMPTY(&logchannels)) {
1408                 /*
1409                  * we don't have the logger chain configured yet,
1410                  * so just log to stdout
1411                  */
1412                 int result;
1413                 result = ast_str_set_va(&buf, BUFSIZ, fmt, ap); /* XXX BUFSIZ ? */
1414                 if (result != AST_DYNSTR_BUILD_FAILED) {
1415                         term_filter_escapes(ast_str_buffer(buf));
1416                         fputs(ast_str_buffer(buf), stdout);
1417                 }
1418                 return;
1419         }
1420
1421         /* Ignore anything that never gets logged anywhere */
1422         if (level != __LOG_VERBOSE && !(global_logmask & (1 << level)))
1423                 return;
1424
1425         /* Build string */
1426         res = ast_str_set_va(&buf, BUFSIZ, fmt, ap);
1427
1428         /* If the build failed, then abort and free this structure */
1429         if (res == AST_DYNSTR_BUILD_FAILED)
1430                 return;
1431
1432         /* Create a new logging message */
1433         if (!(logmsg = ast_calloc_with_stringfields(1, struct logmsg, res + 128)))
1434                 return;
1435
1436         /* Copy string over */
1437         ast_string_field_set(logmsg, message, ast_str_buffer(buf));
1438
1439         /* Set type */
1440         if (level == __LOG_VERBOSE) {
1441                 logmsg->type = LOGMSG_VERBOSE;
1442         } else {
1443                 logmsg->type = LOGMSG_NORMAL;
1444         }
1445
1446         if (display_callids && callid) {
1447                 logmsg->callid = ast_callid_ref(callid);
1448                 /* callid will be unreffed at logmsg destruction */
1449         }
1450
1451         /* Create our date/time */
1452         ast_localtime(&now, &tm, NULL);
1453         ast_strftime(datestring, sizeof(datestring), dateformat, &tm);
1454         ast_string_field_set(logmsg, date, datestring);
1455
1456         /* Copy over data */
1457         logmsg->level = level;
1458         logmsg->line = line;
1459         ast_string_field_set(logmsg, level_name, levels[level]);
1460         ast_string_field_set(logmsg, file, file);
1461         ast_string_field_set(logmsg, function, function);
1462         logmsg->lwp = ast_get_tid();
1463
1464         /* If the logger thread is active, append it to the tail end of the list - otherwise skip that step */
1465         if (logthread != AST_PTHREADT_NULL) {
1466                 AST_LIST_LOCK(&logmsgs);
1467                 if (close_logger_thread) {
1468                         /* Logger is either closing or closed.  We cannot log this message. */
1469                         ast_free(logmsg);
1470                 } else {
1471                         AST_LIST_INSERT_TAIL(&logmsgs, logmsg, list);
1472                         ast_cond_signal(&logcond);
1473                 }
1474                 AST_LIST_UNLOCK(&logmsgs);
1475         } else {
1476                 logger_print_normal(logmsg);
1477                 logmsg_free(logmsg);
1478         }
1479 }
1480
1481 void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
1482 {
1483         struct ast_callid *callid;
1484         va_list ap;
1485
1486         callid = ast_read_threadstorage_callid();
1487
1488         va_start(ap, fmt);
1489         ast_log_full(level, file, line, function, callid, fmt, ap);
1490         va_end(ap);
1491
1492         if (callid) {
1493                 ast_callid_unref(callid);
1494         }
1495 }
1496
1497 void ast_log_callid(int level, const char *file, int line, const char *function, struct ast_callid *callid, const char *fmt, ...)
1498 {
1499         va_list ap;
1500         va_start(ap, fmt);
1501         ast_log_full(level, file, line, function, callid, fmt, ap);
1502         va_end(ap);
1503 }
1504
1505 #ifdef HAVE_BKTR
1506
1507 struct ast_bt *ast_bt_create(void)
1508 {
1509         struct ast_bt *bt = ast_calloc(1, sizeof(*bt));
1510         if (!bt) {
1511                 ast_log(LOG_ERROR, "Unable to allocate memory for backtrace structure!\n");
1512                 return NULL;
1513         }
1514
1515         bt->alloced = 1;
1516
1517         ast_bt_get_addresses(bt);
1518
1519         return bt;
1520 }
1521
1522 int ast_bt_get_addresses(struct ast_bt *bt)
1523 {
1524         bt->num_frames = backtrace(bt->addresses, AST_MAX_BT_FRAMES);
1525
1526         return 0;
1527 }
1528
1529 void *ast_bt_destroy(struct ast_bt *bt)
1530 {
1531         if (bt->alloced) {
1532                 ast_free(bt);
1533         }
1534
1535         return NULL;
1536 }
1537
1538 char **ast_bt_get_symbols(void **addresses, size_t num_frames)
1539 {
1540         char **strings = NULL;
1541 #if defined(BETTER_BACKTRACES)
1542         int stackfr;
1543         bfd *bfdobj;           /* bfd.h */
1544         Dl_info dli;           /* dlfcn.h */
1545         long allocsize;
1546         asymbol **syms = NULL; /* bfd.h */
1547         bfd_vma offset;        /* bfd.h */
1548         const char *lastslash;
1549         asection *section;
1550         const char *file, *func;
1551         unsigned int line;
1552         char address_str[128];
1553         char msg[1024];
1554         size_t strings_size;
1555         size_t *eachlen;
1556 #endif
1557
1558 #if defined(BETTER_BACKTRACES)
1559         strings_size = num_frames * sizeof(*strings);
1560         eachlen = ast_calloc(num_frames, sizeof(*eachlen));
1561
1562         if (!(strings = ast_calloc(num_frames, sizeof(*strings)))) {
1563                 return NULL;
1564         }
1565
1566         for (stackfr = 0; stackfr < num_frames; stackfr++) {
1567                 int found = 0, symbolcount;
1568
1569                 msg[0] = '\0';
1570
1571                 if (!dladdr(addresses[stackfr], &dli)) {
1572                         continue;
1573                 }
1574
1575                 if (strcmp(dli.dli_fname, "asterisk") == 0) {
1576                         char asteriskpath[256];
1577                         if (!(dli.dli_fname = ast_utils_which("asterisk", asteriskpath, sizeof(asteriskpath)))) {
1578                                 /* This will fail to find symbols */
1579                                 ast_debug(1, "Failed to find asterisk binary for debug symbols.\n");
1580                                 dli.dli_fname = "asterisk";
1581                         }
1582                 }
1583
1584                 lastslash = strrchr(dli.dli_fname, '/');
1585                 if (    (bfdobj = bfd_openr(dli.dli_fname, NULL)) &&
1586                                 bfd_check_format(bfdobj, bfd_object) &&
1587                                 (allocsize = bfd_get_symtab_upper_bound(bfdobj)) > 0 &&
1588                                 (syms = ast_malloc(allocsize)) &&
1589                                 (symbolcount = bfd_canonicalize_symtab(bfdobj, syms))) {
1590
1591                         if (bfdobj->flags & DYNAMIC) {
1592                                 offset = addresses[stackfr] - dli.dli_fbase;
1593                         } else {
1594                                 offset = addresses[stackfr] - (void *) 0;
1595                         }
1596
1597                         for (section = bfdobj->sections; section; section = section->next) {
1598                                 if (    !bfd_get_section_flags(bfdobj, section) & SEC_ALLOC ||
1599                                                 section->vma > offset ||
1600                                                 section->size + section->vma < offset) {
1601                                         continue;
1602                                 }
1603
1604                                 if (!bfd_find_nearest_line(bfdobj, section, syms, offset - section->vma, &file, &func, &line)) {
1605                                         continue;
1606                                 }
1607
1608                                 /* file can possibly be null even with a success result from bfd_find_nearest_line */
1609                                 file = file ? file : "";
1610
1611                                 /* Stack trace output */
1612                                 found++;
1613                                 if ((lastslash = strrchr(file, '/'))) {
1614                                         const char *prevslash;
1615                                         for (prevslash = lastslash - 1; *prevslash != '/' && prevslash >= file; prevslash--);
1616                                         if (prevslash >= file) {
1617                                                 lastslash = prevslash;
1618                                         }
1619                                 }
1620                                 if (dli.dli_saddr == NULL) {
1621                                         address_str[0] = '\0';
1622                                 } else {
1623                                         snprintf(address_str, sizeof(address_str), " (%p+%lX)",
1624                                                 dli.dli_saddr,
1625                                                 (unsigned long) (addresses[stackfr] - dli.dli_saddr));
1626                                 }
1627                                 snprintf(msg, sizeof(msg), "%s:%u %s()%s",
1628                                         lastslash ? lastslash + 1 : file, line,
1629                                         S_OR(func, "???"),
1630                                         address_str);
1631
1632                                 break; /* out of section iteration */
1633                         }
1634                 }
1635                 if (bfdobj) {
1636                         bfd_close(bfdobj);
1637                         if (syms) {
1638                                 ast_free(syms);
1639                         }
1640                 }
1641
1642                 /* Default output, if we cannot find the information within BFD */
1643                 if (!found) {
1644                         if (dli.dli_saddr == NULL) {
1645                                 address_str[0] = '\0';
1646                         } else {
1647                                 snprintf(address_str, sizeof(address_str), " (%p+%lX)",
1648                                         dli.dli_saddr,
1649                                         (unsigned long) (addresses[stackfr] - dli.dli_saddr));
1650                         }
1651                         snprintf(msg, sizeof(msg), "%s %s()%s",
1652                                 lastslash ? lastslash + 1 : dli.dli_fname,
1653                                 S_OR(dli.dli_sname, "<unknown>"),
1654                                 address_str);
1655                 }
1656
1657                 if (!ast_strlen_zero(msg)) {
1658                         char **tmp;
1659                         eachlen[stackfr] = strlen(msg);
1660                         if (!(tmp = ast_realloc(strings, strings_size + eachlen[stackfr] + 1))) {
1661                                 ast_free(strings);
1662                                 strings = NULL;
1663                                 break; /* out of stack frame iteration */
1664                         }
1665                         strings = tmp;
1666                         strings[stackfr] = (char *) strings + strings_size;
1667                         ast_copy_string(strings[stackfr], msg, eachlen[stackfr] + 1);
1668                         strings_size += eachlen[stackfr] + 1;
1669                 }
1670         }
1671
1672         if (strings) {
1673                 /* Recalculate the offset pointers */
1674                 strings[0] = (char *) strings + num_frames * sizeof(*strings);
1675                 for (stackfr = 1; stackfr < num_frames; stackfr++) {
1676                         strings[stackfr] = strings[stackfr - 1] + eachlen[stackfr - 1] + 1;
1677                 }
1678         }
1679 #else /* !defined(BETTER_BACKTRACES) */
1680         strings = backtrace_symbols(addresses, num_frames);
1681 #endif /* defined(BETTER_BACKTRACES) */
1682         return strings;
1683 }
1684
1685 #endif /* HAVE_BKTR */
1686
1687 void ast_backtrace(void)
1688 {
1689 #ifdef HAVE_BKTR
1690         struct ast_bt *bt;
1691         int i = 0;
1692         char **strings;
1693
1694         if (!(bt = ast_bt_create())) {
1695                 ast_log(LOG_WARNING, "Unable to allocate space for backtrace structure\n");
1696                 return;
1697         }
1698
1699         if ((strings = ast_bt_get_symbols(bt->addresses, bt->num_frames))) {
1700                 ast_debug(1, "Got %d backtrace record%c\n", bt->num_frames, bt->num_frames != 1 ? 's' : ' ');
1701                 for (i = 3; i < bt->num_frames - 2; i++) {
1702                         ast_debug(1, "#%d: [%p] %s\n", i - 3, bt->addresses[i], strings[i]);
1703                 }
1704
1705                 /* MALLOC_DEBUG will erroneously report an error here, unless we undef the macro. */
1706 #undef free
1707                 free(strings);
1708         } else {
1709                 ast_debug(1, "Could not allocate memory for backtrace\n");
1710         }
1711         ast_bt_destroy(bt);
1712 #else
1713         ast_log(LOG_WARNING, "Must run configure with '--with-execinfo' for stack backtraces.\n");
1714 #endif /* defined(HAVE_BKTR) */
1715 }
1716
1717 void __ast_verbose_ap(const char *file, int line, const char *func, int level, struct ast_callid *callid, const char *fmt, va_list ap)
1718 {
1719         struct ast_str *buf = NULL;
1720         int res = 0;
1721         const char *prefix = level >= 4 ? VERBOSE_PREFIX_4 : level == 3 ? VERBOSE_PREFIX_3 : level == 2 ? VERBOSE_PREFIX_2 : level == 1 ? VERBOSE_PREFIX_1 : "";
1722         signed char magic = level > 127 ? -128 : -level - 1; /* 0 => -1, 1 => -2, etc.  Can't pass NUL, as it is EOS-delimiter */
1723
1724         /* For compatibility with modules still calling ast_verbose() directly instead of using ast_verb() */
1725         if (level < 0) {
1726                 if (!strncmp(fmt, VERBOSE_PREFIX_4, strlen(VERBOSE_PREFIX_4))) {
1727                         magic = -5;
1728                 } else if (!strncmp(fmt, VERBOSE_PREFIX_3, strlen(VERBOSE_PREFIX_3))) {
1729                         magic = -4;
1730                 } else if (!strncmp(fmt, VERBOSE_PREFIX_2, strlen(VERBOSE_PREFIX_2))) {
1731                         magic = -3;
1732                 } else if (!strncmp(fmt, VERBOSE_PREFIX_1, strlen(VERBOSE_PREFIX_1))) {
1733                         magic = -2;
1734                 } else {
1735                         magic = -1;
1736                 }
1737         }
1738
1739         if (!(buf = ast_str_thread_get(&verbose_buf, VERBOSE_BUF_INIT_SIZE))) {
1740                 return;
1741         }
1742
1743         if (ast_opt_timestamp) {
1744                 struct timeval now;
1745                 struct ast_tm tm;
1746                 char date[40];
1747                 char *datefmt;
1748
1749                 now = ast_tvnow();
1750                 ast_localtime(&now, &tm, NULL);
1751                 ast_strftime(date, sizeof(date), dateformat, &tm);
1752                 datefmt = ast_alloca(strlen(date) + 3 + strlen(prefix) + strlen(fmt) + 1);
1753                 sprintf(datefmt, "%c[%s] %s%s", (char) magic, date, prefix, fmt);
1754                 fmt = datefmt;
1755         } else {
1756                 char *tmp = ast_alloca(strlen(prefix) + strlen(fmt) + 2);
1757                 sprintf(tmp, "%c%s%s", (char) magic, prefix, fmt);
1758                 fmt = tmp;
1759         }
1760
1761         /* Build string */
1762         res = ast_str_set_va(&buf, 0, fmt, ap);
1763
1764         /* If the build failed then we can drop this allocated message */
1765         if (res == AST_DYNSTR_BUILD_FAILED) {
1766                 return;
1767         }
1768
1769         ast_log_callid(__LOG_VERBOSE, file, line, func, callid, "%s", ast_str_buffer(buf));
1770 }
1771
1772 void __ast_verbose(const char *file, int line, const char *func, int level, const char *fmt, ...)
1773 {
1774         struct ast_callid *callid;
1775         va_list ap;
1776
1777         callid = ast_read_threadstorage_callid();
1778
1779         va_start(ap, fmt);
1780         __ast_verbose_ap(file, line, func, level, callid, fmt, ap);
1781         va_end(ap);
1782
1783         if (callid) {
1784                 ast_callid_unref(callid);
1785         }
1786 }
1787
1788 void __ast_verbose_callid(const char *file, int line, const char *func, int level, struct ast_callid *callid, const char *fmt, ...)
1789 {
1790         va_list ap;
1791         va_start(ap, fmt);
1792         __ast_verbose_ap(file, line, func, level, callid, fmt, ap);
1793         va_end(ap);
1794 }
1795
1796 /* No new code should use this directly, but we have the ABI for backwards compat */
1797 #undef ast_verbose
1798 void __attribute__((format(printf, 1,2))) ast_verbose(const char *fmt, ...);
1799 void ast_verbose(const char *fmt, ...)
1800 {
1801         struct ast_callid *callid;
1802         va_list ap;
1803
1804         callid = ast_read_threadstorage_callid();
1805
1806         va_start(ap, fmt);
1807         __ast_verbose_ap("", 0, "", 0, callid, fmt, ap);
1808         va_end(ap);
1809
1810         if (callid) {
1811                 ast_callid_unref(callid);
1812         }
1813 }
1814
1815 int ast_register_verbose(void (*v)(const char *string))
1816 {
1817         struct verb *verb;
1818
1819         if (!(verb = ast_malloc(sizeof(*verb))))
1820                 return -1;
1821
1822         verb->verboser = v;
1823
1824         AST_RWLIST_WRLOCK(&verbosers);
1825         AST_RWLIST_INSERT_HEAD(&verbosers, verb, list);
1826         AST_RWLIST_UNLOCK(&verbosers);
1827
1828         return 0;
1829 }
1830
1831 int ast_unregister_verbose(void (*v)(const char *string))
1832 {
1833         struct verb *cur;
1834
1835         AST_RWLIST_WRLOCK(&verbosers);
1836         AST_RWLIST_TRAVERSE_SAFE_BEGIN(&verbosers, cur, list) {
1837                 if (cur->verboser == v) {
1838                         AST_RWLIST_REMOVE_CURRENT(list);
1839                         ast_free(cur);
1840                         break;
1841                 }
1842         }
1843         AST_RWLIST_TRAVERSE_SAFE_END;
1844         AST_RWLIST_UNLOCK(&verbosers);
1845
1846         return cur ? 0 : -1;
1847 }
1848
1849 static void update_logchannels(void)
1850 {
1851         struct logchannel *cur;
1852
1853         AST_RWLIST_WRLOCK(&logchannels);
1854
1855         global_logmask = 0;
1856
1857         AST_RWLIST_TRAVERSE(&logchannels, cur, list) {
1858                 cur->logmask = make_components(cur->components, cur->lineno, &cur->verbosity);
1859                 global_logmask |= cur->logmask;
1860         }
1861
1862         AST_RWLIST_UNLOCK(&logchannels);
1863 }
1864
1865 int ast_logger_register_level(const char *name)
1866 {
1867         unsigned int level;
1868         unsigned int available = 0;
1869
1870         AST_RWLIST_WRLOCK(&logchannels);
1871
1872         for (level = 0; level < ARRAY_LEN(levels); level++) {
1873                 if ((level >= 16) && !available && !levels[level]) {
1874                         available = level;
1875                         continue;
1876                 }
1877
1878                 if (levels[level] && !strcasecmp(levels[level], name)) {
1879                         ast_log(LOG_WARNING,
1880                                 "Unable to register dynamic logger level '%s': a standard logger level uses that name.\n",
1881                                 name);
1882                         AST_RWLIST_UNLOCK(&logchannels);
1883
1884                         return -1;
1885                 }
1886         }
1887
1888         if (!available) {
1889                 ast_log(LOG_WARNING,
1890                         "Unable to register dynamic logger level '%s'; maximum number of levels registered.\n",
1891                         name);
1892                 AST_RWLIST_UNLOCK(&logchannels);
1893
1894                 return -1;
1895         }
1896
1897         levels[available] = ast_strdup(name);
1898
1899         AST_RWLIST_UNLOCK(&logchannels);
1900
1901         ast_debug(1, "Registered dynamic logger level '%s' with index %d.\n", name, available);
1902
1903         update_logchannels();
1904
1905         return available;
1906 }
1907
1908 void ast_logger_unregister_level(const char *name)
1909 {
1910         unsigned int found = 0;
1911         unsigned int x;
1912
1913         AST_RWLIST_WRLOCK(&logchannels);
1914
1915         for (x = 16; x < ARRAY_LEN(levels); x++) {
1916                 if (!levels[x]) {
1917                         continue;
1918                 }
1919
1920                 if (strcasecmp(levels[x], name)) {
1921                         continue;
1922                 }
1923
1924                 found = 1;
1925                 break;
1926         }
1927
1928         if (found) {
1929                 /* take this level out of the global_logmask, to ensure that no new log messages
1930                  * will be queued for it
1931                  */
1932
1933                 global_logmask &= ~(1 << x);
1934
1935                 ast_free(levels[x]);
1936                 levels[x] = NULL;
1937                 AST_RWLIST_UNLOCK(&logchannels);
1938
1939                 ast_debug(1, "Unregistered dynamic logger level '%s' with index %d.\n", name, x);
1940
1941                 update_logchannels();
1942         } else {
1943                 AST_RWLIST_UNLOCK(&logchannels);
1944         }
1945 }
1946