pbx/pbx_config.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 Populate and remember extensions from static config file
  22  *
  23  *
  24  */
  25
  26 #include "asterisk.h"
  27
  28 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  29
  30 #include <ctype.h>
  31
  32 #include "asterisk/paths.h"     /* ast_config_AST_CONFIG_DIR */
  33 #include "asterisk/pbx.h"
  34 #include "asterisk/config.h"
  35 #include "asterisk/module.h"
  36 #include "asterisk/logger.h"
  37 #include "asterisk/cli.h"
  38 #include "asterisk/channel.h"   /* AST_MAX_EXTENSION */
  39 #include "asterisk/callerid.h"
  40
  41 static const char config[] = "extensions.conf";
  42 static const char registrar[] = "pbx_config";
  43 static char userscontext[AST_MAX_EXTENSION] = "default";
  44
  45 static int static_config = 0;
  46 static int write_protect_config = 1;
  47 static int autofallthrough_config = 1;
  48 static int clearglobalvars_config = 0;
  49 static int extenpatternmatchnew_config = 0;
  50 static char *overrideswitch_config = NULL;
  51
  52 AST_MUTEX_DEFINE_STATIC(save_dialplan_lock);
  53
  54 static struct ast_context *local_contexts = NULL;
  55 static struct ast_hashtab *local_table = NULL;
  56 /*
  57  * Prototypes for our completion functions
  58  */
  59 static char *complete_dialplan_remove_include(struct ast_cli_args *);
  60 static char *complete_dialplan_add_include(struct ast_cli_args *);
  61 static char *complete_dialplan_remove_ignorepat(struct ast_cli_args *);
  62 static char *complete_dialplan_add_ignorepat(struct ast_cli_args *);
  63 static char *complete_dialplan_remove_extension(struct ast_cli_args *);
  64 static char *complete_dialplan_add_extension(struct ast_cli_args *);
  65
  66 /*
  67  * Implementation of functions provided by this module
  68  */
  69
  70 /*!
  71  * REMOVE INCLUDE command stuff
  72  */
  73 static char *handle_cli_dialplan_remove_include(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
  74 {
  75         switch (cmd) {
  76         case CLI_INIT:
  77                 e->command = "dialplan remove include";
  78                 e->usage =
  79                         "Usage: dialplan remove include <context> from <context>\n"
  80                         "       Remove an included context from another context.\n";
  81                 return NULL;
  82         case CLI_GENERATE:
  83                 return complete_dialplan_remove_include(a);
  84         }
  85
  86         if (strcmp(a->argv[4], "from"))
  87                 return CLI_SHOWUSAGE;
  88
  89         if (!ast_context_remove_include(a->argv[5], a->argv[3], registrar)) {
  90                 ast_cli(a->fd, "We are not including '%s' into '%s' now\n",
  91                         a->argv[3], a->argv[5]);
  92                 return CLI_SUCCESS;
  93         }
  94
  95         ast_cli(a->fd, "Failed to remove '%s' include from '%s' context\n",
  96                 a->argv[3], a->argv[5]);
  97         return CLI_FAILURE;
  98 }
  99
 100 /*! \brief return true if 'name' is included by context c */
 101 static int lookup_ci(struct ast_context *c, const char *name)
 102 {
 103         struct ast_include *i = NULL;
 104
 105         if (ast_rdlock_context(c))      /* error, skip */
 106                 return 0;
 107         while ( (i = ast_walk_context_includes(c, i)) )
 108                 if (!strcmp(name, ast_get_include_name(i)))
 109                         break;
 110         ast_unlock_context(c);
 111         return i ? -1 /* success */ : 0;
 112 }
 113
 114 /*! \brief return true if 'name' is in the ignorepats for context c */
 115 static int lookup_c_ip(struct ast_context *c, const char *name)
 116 {
 117         struct ast_ignorepat *ip = NULL;
 118
 119         if (ast_rdlock_context(c))      /* error, skip */
 120                 return 0;
 121         while ( (ip = ast_walk_context_ignorepats(c, ip)) )
 122                 if (!strcmp(name, ast_get_ignorepat_name(ip)))
 123                         break;
 124         ast_unlock_context(c);
 125         return ip ? -1 /* success */ : 0;
 126 }
 127
 128 /*! \brief moves to the n-th word in the string, or empty string if none */
 129 static const char *skip_words(const char *p, int n)
 130 {
 131         int in_blank = 0;
 132         for (;n && *p; p++) {
 133                 if (isblank(*p) /* XXX order is important */ && !in_blank) {
 134                         n--;    /* one word is gone */
 135                         in_blank = 1;
 136                 } else if (/* !is_blank(*p), we know already, && */ in_blank) {
 137                         in_blank = 0;
 138                 }
 139         }
 140         return p;
 141 }
 142
 143 /*! \brief match the first 'len' chars of word. len==0 always succeeds */
 144 static int partial_match(const char *s, const char *word, int len)
 145 {
 146         return (len == 0 || !strncmp(s, word, len));
 147 }
 148
 149 /*! \brief split extension\@context in two parts, return -1 on error.
 150  * The return string is malloc'ed and pointed by *ext
 151  */
 152 static int split_ec(const char *src, char **ext, char ** const ctx, char ** const cid)
 153 {
 154         char *i, *c, *e = ast_strdup(src); /* now src is not used anymore */
 155
 156         if (e == NULL)
 157                 return -1;      /* malloc error */
 158         /* now, parse values from 'exten@context' */
 159         *ext = e;
 160         c = strchr(e, '@');
 161         if (c == NULL)  /* no context part */
 162                 *ctx = "";      /* it is not overwritten, anyways */
 163         else {  /* found context, check for duplicity ... */
 164                 *c++ = '\0';
 165                 *ctx = c;
 166                 if (strchr(c, '@')) { /* two @, not allowed */
 167                         free(e);
 168                         return -1;
 169                 }
 170         }
 171         if (cid && (i = strchr(e, '/'))) {
 172                 *i++ = '\0';
 173                 *cid = i;
 174         } else if (cid) {
 175                 /* Signal none detected */
 176                 *cid = NULL;
 177         }
 178         return 0;
 179 }
 180
 181 /* _X_ is the string we need to complete */
 182 static char *complete_dialplan_remove_include(struct ast_cli_args *a)
 183 {
 184         int which = 0;
 185         char *res = NULL;
 186         int len = strlen(a->word); /* how many bytes to match */
 187         struct ast_context *c = NULL;
 188
 189         if (a->pos == 3) {              /* "dialplan remove include _X_" */
 190                 if (ast_wrlock_contexts()) {
 191                         ast_log(LOG_ERROR, "Failed to lock context list\n");
 192                         return NULL;
 193                 }
 194                 /* walk contexts and their includes, return the n-th match */
 195                 while (!res && (c = ast_walk_contexts(c))) {
 196                         struct ast_include *i = NULL;
 197
 198                         if (ast_rdlock_context(c))      /* error ? skip this one */
 199                                 continue;
 200
 201                         while ( !res && (i = ast_walk_context_includes(c, i)) ) {
 202                                 const char *i_name = ast_get_include_name(i);
 203                                 struct ast_context *nc = NULL;
 204                                 int already_served = 0;
 205
 206                                 if (!partial_match(i_name, a->word, len))
 207                                         continue;       /* not matched */
 208
 209                                 /* check if this include is already served or not */
 210
 211                                 /* go through all contexts again till we reach actual
 212                                  * context or already_served = 1
 213                                  */
 214                                 while ( (nc = ast_walk_contexts(nc)) && nc != c && !already_served)
 215                                         already_served = lookup_ci(nc, i_name);
 216
 217                                 if (!already_served && ++which > a->n)
 218                                         res = strdup(i_name);
 219                         }
 220                         ast_unlock_context(c);
 221                 }
 222
 223                 ast_unlock_contexts();
 224                 return res;
 225         } else if (a->pos == 4) { /* "dialplan remove include CTX _X_" */
 226                 /*
 227                  * complete as 'from', but only if previous context is really
 228                  * included somewhere
 229                  */
 230                 char *context, *dupline;
 231                 const char *s = skip_words(a->line, 3); /* skip 'dialplan' 'remove' 'include' */
 232
 233                 if (a->n > 0)
 234                         return NULL;
 235                 context = dupline = strdup(s);
 236                 if (!dupline) {
 237                         ast_log(LOG_ERROR, "Out of free memory\n");
 238                         return NULL;
 239                 }
 240                 strsep(&dupline, " ");
 241
 242                 if (ast_rdlock_contexts()) {
 243                         ast_log(LOG_ERROR, "Failed to lock contexts list\n");
 244                         free(context);
 245                         return NULL;
 246                 }
 247
 248                 /* go through all contexts and check if is included ... */
 249                 while (!res && (c = ast_walk_contexts(c)))
 250                         if (lookup_ci(c, context)) /* context is really included, complete "from" command */
 251                                 res = strdup("from");
 252                 ast_unlock_contexts();
 253                 if (!res)
 254                         ast_log(LOG_WARNING, "%s not included anywhere\n", context);
 255                 free(context);
 256                 return res;
 257         } else if (a->pos == 5) { /* "dialplan remove include CTX from _X_" */
 258                 /*
 259                  * Context from which we removing include ...
 260                  */
 261                 char *context, *dupline, *from;
 262                 const char *s = skip_words(a->line, 3); /* skip 'dialplan' 'remove' 'include' */
 263                 context = dupline = strdup(s);
 264                 if (!dupline) {
 265                         ast_log(LOG_ERROR, "Out of free memory\n");
 266                         return NULL;
 267                 }
 268
 269                 strsep(&dupline, " "); /* skip context */
 270
 271                 /* fourth word must be 'from' */
 272                 from = strsep(&dupline, " ");
 273                 if (!from || strcmp(from, "from")) {
 274                         free(context);
 275                         return NULL;
 276                 }
 277
 278                 if (ast_rdlock_contexts()) {
 279                         ast_log(LOG_ERROR, "Failed to lock context list\n");
 280                         free(context);
 281                         return NULL;
 282                 }
 283
 284                 /* walk through all contexts ... */
 285                 c = NULL;
 286                 while ( !res && (c = ast_walk_contexts(c))) {
 287                         const char *c_name = ast_get_context_name(c);
 288                         if (!partial_match(c_name, a->word, len))       /* not a good target */
 289                                 continue;
 290                         /* walk through all includes and check if it is our context */
 291                         if (lookup_ci(c, context) && ++which > a->n)
 292                                 res = strdup(c_name);
 293                 }
 294                 ast_unlock_contexts();
 295                 free(context);
 296                 return res;
 297         }
 298
 299         return NULL;
 300 }
 301
 302 /*!
 303  * REMOVE EXTENSION command stuff
 304  */
 305 static char *handle_cli_dialplan_remove_extension(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 306 {
 307         int removing_priority = 0;
 308         char *exten, *context, *cid;
 309         char *ret = CLI_FAILURE;
 310
 311         switch (cmd) {
 312         case CLI_INIT:
 313                 e->command = "dialplan remove extension";
 314                 e->usage =
 315                         "Usage: dialplan remove extension exten[/cid]@context [priority]\n"
 316                         "       Remove an extension from a given context. If a priority\n"
 317                         "       is given, only that specific priority from the given extension\n"
 318                         "       will be removed.\n";
 319                 return NULL;
 320         case CLI_GENERATE:
 321                 return complete_dialplan_remove_extension(a);
 322         }
 323
 324         if (a->argc != 5 && a->argc != 4)
 325                 return CLI_SHOWUSAGE;
 326
 327         /*
 328          * Priority input checking ...
 329          */
 330         if (a->argc == 5) {
 331                 const char *c = a->argv[4];
 332
 333                 /* check for digits in whole parameter for right priority ...
 334                  * why? because atoi (strtol) returns 0 if any characters in
 335                  * string and whole extension will be removed, it's not good
 336                  */
 337                 if (!strcmp("hint", c))
 338                         removing_priority = PRIORITY_HINT;
 339                 else {
 340                         while (*c && isdigit(*c))
 341                                 c++;
 342                         if (*c) { /* non-digit in string */
 343                                 ast_cli(a->fd, "Invalid priority '%s'\n", a->argv[4]);
 344                                 return CLI_FAILURE;
 345                         }
 346                         removing_priority = atoi(a->argv[4]);
 347                 }
 348
 349                 if (removing_priority == 0) {
 350                         ast_cli(a->fd, "If you want to remove whole extension, please " \
 351                                 "omit priority argument\n");
 352                         return CLI_FAILURE;
 353                 }
 354         }
 355
 356         /* XXX original overwrote argv[3] */
 357         /*
 358          * Format exten@context checking ...
 359          */
 360         if (split_ec(a->argv[3], &exten, &context, &cid))
 361                 return CLI_FAILURE; /* XXX malloc failure */
 362         if ((!strlen(exten)) || (!(strlen(context)))) {
 363                 ast_cli(a->fd, "Missing extension or context name in third argument '%s'\n",
 364                         a->argv[3]);
 365                 free(exten);
 366                 return CLI_FAILURE;
 367         }
 368
 369         if (!ast_context_remove_extension_callerid(context, exten, removing_priority,
 370                         /* Do NOT substitute S_OR; it is NOT the same thing */
 371                         cid ? cid : (removing_priority ? "" : NULL), cid ? 1 : 0, registrar)) {
 372                 if (!removing_priority)
 373                         ast_cli(a->fd, "Whole extension %s@%s removed\n",
 374                                 exten, context);
 375                 else
 376                         ast_cli(a->fd, "Extension %s@%s with priority %d removed\n",
 377                                 exten, context, removing_priority);
 378
 379                 ret = CLI_SUCCESS;
 380         } else {
 381                 if (cid) {
 382                         ast_cli(a->fd, "Failed to remove extension %s/%s@%s\n", exten, cid, context);
 383                 } else {
 384                         ast_cli(a->fd, "Failed to remove extension %s@%s\n", exten, context);
 385                 }
 386                 ret = CLI_FAILURE;
 387         }
 388         free(exten);
 389         return ret;
 390 }
 391
 392 static char *complete_dialplan_remove_extension(struct ast_cli_args *a)
 393 {
 394         char *ret = NULL;
 395         int which = 0;
 396
 397         if (a->pos == 3) { /* 'dialplan remove extension _X_' (exten@context ... */
 398                 struct ast_context *c = NULL;
 399                 char *context = NULL, *exten = NULL, *cid = NULL;
 400                 int le = 0;     /* length of extension */
 401                 int lc = 0;     /* length of context */
 402                 int lcid = 0; /* length of cid */
 403
 404                 lc = split_ec(a->word, &exten, &context, &cid);
 405                 if (lc) { /* error */
 406                         return NULL;
 407                 }
 408                 le = strlen(exten);
 409                 lc = strlen(context);
 410                 lcid = cid ? strlen(cid) : -1;
 411
 412                 if (ast_rdlock_contexts()) {
 413                         ast_log(LOG_ERROR, "Failed to lock context list\n");
 414                         goto error2;
 415                 }
 416
 417                 /* find our context ... */
 418                 while ( (c = ast_walk_contexts(c)) ) {  /* match our context if any */
 419                         struct ast_exten *e = NULL;
 420                         /* XXX locking ? */
 421                         if (!partial_match(ast_get_context_name(c), context, lc))
 422                                 continue;       /* context not matched */
 423                         while ( (e = ast_walk_context_extensions(c, e)) ) { /* try to complete extensions ... */
 424                                 if ( !strchr(a->word, '/') ||
 425                                                 (!strchr(a->word, '@') && partial_match(ast_get_extension_cidmatch(e), cid, lcid)) ||
 426                                                 (strchr(a->word, '@') && !strcmp(ast_get_extension_cidmatch(e), cid))) {
 427                                         if ( ((strchr(a->word, '/') || strchr(a->word, '@')) && !strcmp(ast_get_extension_name(e), exten)) ||
 428                                                  (!strchr(a->word, '/') && !strchr(a->word, '@') && partial_match(ast_get_extension_name(e), exten, le))) { /* n-th match */
 429                                                 if (++which > a->n) {
 430                                                         /* If there is an extension then return exten@context. */
 431                                                         if (ast_get_extension_matchcid(e) && (!strchr(a->word, '@') || strchr(a->word, '/'))) {
 432                                                                 if (asprintf(&ret, "%s/%s@%s", ast_get_extension_name(e), ast_get_extension_cidmatch(e), ast_get_context_name(c)) < 0) {
 433                                                                         ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
 434                                                                         ret = NULL;
 435                                                                 }
 436                                                                 break;
 437                                                         } else if (!ast_get_extension_matchcid(e) && !strchr(a->word, '/')) {
 438                                                                 if (asprintf(&ret, "%s@%s", ast_get_extension_name(e), ast_get_context_name(c)) < 0) {
 439                                                                         ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
 440                                                                         ret = NULL;
 441                                                                 }
 442                                                                 break;
 443                                                         }
 444                                                 }
 445                                         }
 446                                 }
 447                         }
 448                         if (e)  /* got a match */
 449                                 break;
 450                 }
 451
 452                 ast_unlock_contexts();
 453         error2:
 454                 free(exten);
 455         } else if (a->pos == 4) { /* 'dialplan remove extension EXT _X_' (priority) */
 456                 char *exten = NULL, *context, *cid, *p;
 457                 struct ast_context *c;
 458                 int le, lc, len;
 459                 const char *s = skip_words(a->line, 3); /* skip 'dialplan' 'remove' 'extension' */
 460                 int i = split_ec(s, &exten, &context, &cid);    /* parse ext@context */
 461
 462                 if (i)  /* error */
 463                         goto error3;
 464                 if ( (p = strchr(exten, ' ')) ) /* remove space after extension */
 465                         *p = '\0';
 466                 if ( (p = strchr(context, ' ')) ) /* remove space after context */
 467                         *p = '\0';
 468                 le = strlen(exten);
 469                 lc = strlen(context);
 470                 len = strlen(a->word);
 471                 if (le == 0 || lc == 0)
 472                         goto error3;
 473
 474                 if (ast_rdlock_contexts()) {
 475                         ast_log(LOG_ERROR, "Failed to lock context list\n");
 476                         goto error3;
 477                 }
 478
 479                 /* walk contexts */
 480                 c = NULL;
 481                 while ( (c = ast_walk_contexts(c)) ) {
 482                         /* XXX locking on c ? */
 483                         struct ast_exten *e;
 484                         if (strcmp(ast_get_context_name(c), context) != 0)
 485                                 continue;
 486                         /* got it, we must match here */
 487                         e = NULL;
 488                         while ( (e = ast_walk_context_extensions(c, e)) ) {
 489                                 struct ast_exten *priority;
 490                                 char buffer[10];
 491
 492                                 if (cid && strcmp(ast_get_extension_cidmatch(e), cid) != 0) {
 493                                         continue;
 494                                 }
 495                                 if (strcmp(ast_get_extension_name(e), exten) != 0)
 496                                         continue;
 497                                 /* XXX lock e ? */
 498                                 priority = NULL;
 499                                 while ( !ret && (priority = ast_walk_extension_priorities(e, priority)) ) {
 500                                         snprintf(buffer, sizeof(buffer), "%u", ast_get_extension_priority(priority));
 501                                         if (partial_match(buffer, a->word, len) && ++which > a->n) /* n-th match */
 502                                                 ret = strdup(buffer);
 503                                 }
 504                                 break;
 505                         }
 506                         break;
 507                 }
 508                 ast_unlock_contexts();
 509         error3:
 510                 free(exten);
 511         }
 512         return ret;
 513 }
 514
 515 /*!
 516  * Include context ...
 517  */
 518 static char *handle_cli_dialplan_add_include(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 519 {
 520         switch (cmd) {
 521         case CLI_INIT:
 522                 e->command = "dialplan add include";
 523                 e->usage =
 524                         "Usage: dialplan add include <context> into <context>\n"
 525                         "       Include a context in another context.\n";
 526                 return NULL;
 527         case CLI_GENERATE:
 528                 return complete_dialplan_add_include(a);
 529         }
 530
 531         if (a->argc != 6) /* dialplan add include CTX in CTX */
 532                 return CLI_SHOWUSAGE;
 533
 534         /* fifth arg must be 'into' ... */
 535         if (strcmp(a->argv[4], "into"))
 536                 return CLI_SHOWUSAGE;
 537
 538         if (ast_context_add_include(a->argv[5], a->argv[3], registrar)) {
 539                 switch (errno) {
 540                 case ENOMEM:
 541                         ast_cli(a->fd, "Out of memory for context addition\n");
 542                         break;
 543
 544                 case EBUSY:
 545                         ast_cli(a->fd, "Failed to lock context(s) list, please try again later\n");
 546                         break;
 547
 548                 case EEXIST:
 549                         ast_cli(a->fd, "Context '%s' already included in '%s' context\n",
 550                                 a->argv[3], a->argv[5]);
 551                         break;
 552
 553                 case ENOENT:
 554                 case EINVAL:
 555                         ast_cli(a->fd, "There is no existence of context '%s'\n",
 556                                 errno == ENOENT ? a->argv[5] : a->argv[3]);
 557                         break;
 558
 559                 default:
 560                         ast_cli(a->fd, "Failed to include '%s' in '%s' context\n",
 561                                 a->argv[3], a->argv[5]);
 562                         break;
 563                 }
 564                 return CLI_FAILURE;
 565         }
 566
 567         /* show some info ... */
 568         ast_cli(a->fd, "Context '%s' included in '%s' context\n",
 569                 a->argv[3], a->argv[5]);
 570
 571         return CLI_SUCCESS;
 572 }
 573
 574 static char *complete_dialplan_add_include(struct ast_cli_args *a)
 575 {
 576         struct ast_context *c;
 577         int which = 0;
 578         char *ret = NULL;
 579         int len = strlen(a->word);
 580
 581         if (a->pos == 3) {              /* 'dialplan add include _X_' (context) ... */
 582                 if (ast_rdlock_contexts()) {
 583                         ast_log(LOG_ERROR, "Failed to lock context list\n");
 584                         return NULL;
 585                 }
 586                 for (c = NULL; !ret && (c = ast_walk_contexts(c)); )
 587                         if (partial_match(ast_get_context_name(c), a->word, len) && ++which > a->n)
 588                                 ret = strdup(ast_get_context_name(c));
 589                 ast_unlock_contexts();
 590                 return ret;
 591         } else if (a->pos == 4) { /* dialplan add include CTX _X_ */
 592                 /* complete  as 'into' if context exists or we are unable to check */
 593                 char *context, *dupline;
 594                 const char *s = skip_words(a->line, 3); /* should not fail */
 595
 596                 if (a->n != 0)  /* only once */
 597                         return NULL;
 598
 599                 /* parse context from line ... */
 600                 context = dupline = strdup(s);
 601                 if (!context) {
 602                         ast_log(LOG_ERROR, "Out of free memory\n");
 603                         return strdup("into");
 604                 }
 605                 strsep(&dupline, " ");
 606
 607                 /* check for context existence ... */
 608                 if (ast_rdlock_contexts()) {
 609                         ast_log(LOG_ERROR, "Failed to lock context list\n");
 610                         /* our fault, we can't check, so complete 'into' ... */
 611                         ret = strdup("into");
 612                 } else {
 613                         struct ast_context *ctx;
 614                         for (ctx = NULL; !ret && (ctx = ast_walk_contexts(ctx)); )
 615                                 if (!strcmp(context, ast_get_context_name(ctx)))
 616                                         ret = strdup("into"); /* found */
 617                         ast_unlock_contexts();
 618                 }
 619                 free(context);
 620                 return ret;
 621         } else if (a->pos == 5) { /* 'dialplan add include CTX into _X_' (dst context) */
 622                 char *context, *dupline, *into;
 623                 const char *s = skip_words(a->line, 3); /* should not fail */
 624                 context = dupline = strdup(s);
 625                 if (!dupline) {
 626                         ast_log(LOG_ERROR, "Out of free memory\n");
 627                         return NULL;
 628                 }
 629                 strsep(&dupline, " "); /* skip context */
 630                 into = strsep(&dupline, " ");
 631                 /* error if missing context or fifth word is not 'into' */
 632                 if (!strlen(context) || strcmp(into, "into")) {
 633                         ast_log(LOG_ERROR, "bad context %s or missing into %s\n",
 634                                 context, into);
 635                         goto error3;
 636                 }
 637
 638                 if (ast_rdlock_contexts()) {
 639                         ast_log(LOG_ERROR, "Failed to lock context list\n");
 640                         goto error3;
 641                 }
 642
 643                 for (c = NULL; (c = ast_walk_contexts(c)); )
 644                         if (!strcmp(context, ast_get_context_name(c)))
 645                                 break;
 646                 if (c) { /* first context exists, go on... */
 647                         /* go through all contexts ... */
 648                         for (c = NULL; !ret && (c = ast_walk_contexts(c)); ) {
 649                                 if (!strcmp(context, ast_get_context_name(c)))
 650                                         continue; /* skip ourselves */
 651                                 if (partial_match(ast_get_context_name(c), a->word, len) &&
 652                                                 !lookup_ci(c, context) /* not included yet */ &&
 653                                                 ++which > a->n)
 654                                         ret = strdup(ast_get_context_name(c));
 655                         }
 656                 } else {
 657                         ast_log(LOG_ERROR, "context %s not found\n", context);
 658                 }
 659                 ast_unlock_contexts();
 660         error3:
 661                 free(context);
 662                 return ret;
 663         }
 664
 665         return NULL;
 666 }
 667
 668 /*!
 669  * \brief 'save dialplan' CLI command implementation functions ...
 670  */
 671 static char *handle_cli_dialplan_save(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 672 {
 673         char filename[256], overrideswitch[256] = "";
 674         struct ast_context *c;
 675         struct ast_config *cfg;
 676         struct ast_variable *v;
 677         int incomplete = 0; /* incomplete config write? */
 678         FILE *output;
 679         struct ast_flags config_flags = { 0 };
 680         const char *base, *slash, *file;
 681
 682         switch (cmd) {
 683         case CLI_INIT:
 684                 e->command = "dialplan save";
 685                 e->usage =
 686                         "Usage: dialplan save [/path/to/extension/file]\n"
 687                         "       Save dialplan created by pbx_config module.\n"
 688                         "\n"
 689                         "Example: dialplan save                 (/etc/asterisk/extensions.conf)\n"
 690                         "         dialplan save /home/markster  (/home/markster/extensions.conf)\n";
 691                 return NULL;
 692         case CLI_GENERATE:
 693                 return NULL;
 694         }
 695
 696         if (! (static_config && !write_protect_config)) {
 697                 ast_cli(a->fd,
 698                         "I can't save dialplan now, see '%s' example file.\n",
 699                         config);
 700                 return CLI_FAILURE;
 701         }
 702
 703         if (a->argc != 2 && a->argc != 3)
 704                 return CLI_SHOWUSAGE;
 705
 706         if (ast_mutex_lock(&save_dialplan_lock)) {
 707                 ast_cli(a->fd,
 708                         "Failed to lock dialplan saving (another proccess saving?)\n");
 709                 return CLI_FAILURE;
 710         }
 711         /* XXX the code here is quite loose, a pathname with .conf in it
 712          * is assumed to be a complete pathname
 713          */
 714         if (a->argc == 3) {     /* have config path. Look for *.conf */
 715                 base = a->argv[2];
 716                 if (!strstr(a->argv[2], ".conf")) { /*no, this is assumed to be a pathname */
 717                         /* if filename ends with '/', do not add one */
 718                         slash = (*(a->argv[2] + strlen(a->argv[2]) -1) == '/') ? "/" : "";
 719                         file = config;  /* default: 'extensions.conf' */
 720                 } else {        /* yes, complete file name */
 721                         slash = "";
 722                         file = "";
 723                 }
 724         } else {
 725                 /* no config file, default one */
 726                 base = ast_config_AST_CONFIG_DIR;
 727                 slash = "/";
 728                 file = config;
 729         }
 730         snprintf(filename, sizeof(filename), "%s%s%s", base, slash, config);
 731
 732         cfg = ast_config_load("extensions.conf", config_flags);
 733
 734         /* try to lock contexts list */
 735         if (ast_rdlock_contexts()) {
 736                 ast_cli(a->fd, "Failed to lock contexts list\n");
 737                 ast_mutex_unlock(&save_dialplan_lock);
 738                 ast_config_destroy(cfg);
 739                 return CLI_FAILURE;
 740         }
 741
 742         /* create new file ... */
 743         if (!(output = fopen(filename, "wt"))) {
 744                 ast_cli(a->fd, "Failed to create file '%s'\n",
 745                         filename);
 746                 ast_unlock_contexts();
 747                 ast_mutex_unlock(&save_dialplan_lock);
 748                 ast_config_destroy(cfg);
 749                 return CLI_FAILURE;
 750         }
 751
 752         /* fireout general info */
 753         if (overrideswitch_config) {
 754                 snprintf(overrideswitch, sizeof(overrideswitch), "overrideswitch=%s\n", overrideswitch_config);
 755         }
 756         fprintf(output, "[general]\nstatic=%s\nwriteprotect=%s\nautofallthrough=%s\nclearglobalvars=%s\n%sextenpatternmatchnew=%s\n\n",
 757                 static_config ? "yes" : "no",
 758                 write_protect_config ? "yes" : "no",
 759                 autofallthrough_config ? "yes" : "no",
 760                                 clearglobalvars_config ? "yes" : "no",
 761                                 overrideswitch_config ? overrideswitch : "",
 762                                 extenpatternmatchnew_config ? "yes" : "no");
 763
 764         if ((v = ast_variable_browse(cfg, "globals"))) {
 765                 fprintf(output, "[globals]\n");
 766                 while(v) {
 767                         fprintf(output, "%s => %s\n", v->name, v->value);
 768                         v = v->next;
 769                 }
 770                 fprintf(output, "\n");
 771         }
 772
 773         ast_config_destroy(cfg);
 774
 775 #define PUT_CTX_HDR     do { \
 776         if (!context_header_written) {  \
 777                 fprintf(output, "[%s]\n", ast_get_context_name(c));     \
 778                 context_header_written = 1;     \
 779         }       \
 780         } while (0)
 781
 782         /* walk all contexts */
 783         for (c = NULL; (c = ast_walk_contexts(c)); ) {
 784                 int context_header_written = 0;
 785                 struct ast_exten *ext, *last_written_e = NULL;
 786                 struct ast_include *i;
 787                 struct ast_ignorepat *ip;
 788                 struct ast_sw *sw;
 789
 790                 /* try to lock context and fireout all info */
 791                 if (ast_rdlock_context(c)) { /* lock failure */
 792                         incomplete = 1;
 793                         continue;
 794                 }
 795                 /* registered by this module? */
 796                 /* XXX do we need this ? */
 797                 if (!strcmp(ast_get_context_registrar(c), registrar)) {
 798                         fprintf(output, "[%s]\n", ast_get_context_name(c));
 799                         context_header_written = 1;
 800                 }
 801
 802                 /* walk extensions ... */
 803                 for (ext = NULL; (ext = ast_walk_context_extensions(c, ext)); ) {
 804                         struct ast_exten *p = NULL;
 805
 806                         /* fireout priorities */
 807                         while ( (p = ast_walk_extension_priorities(ext, p)) ) {
 808                                 if (strcmp(ast_get_extension_registrar(p), registrar) != 0) /* not this source */
 809                                         continue;
 810
 811                                 /* make empty line between different extensions */
 812                                 if (last_written_e != NULL &&
 813                                             strcmp(ast_get_extension_name(last_written_e),
 814                                                     ast_get_extension_name(p)))
 815                                         fprintf(output, "\n");
 816                                 last_written_e = p;
 817
 818                                 PUT_CTX_HDR;
 819
 820                                 if (ast_get_extension_priority(p) == PRIORITY_HINT) { /* easy */
 821                                         fprintf(output, "exten => %s,hint,%s\n",
 822                                                     ast_get_extension_name(p),
 823                                                     ast_get_extension_app(p));
 824                                 } else {
 825                                         const char *sep, *cid;
 826                                         const char *el = ast_get_extension_label(p);
 827                                         char label[128] = "";
 828
 829                                         if (ast_get_extension_matchcid(p)) {
 830                                                 sep = "/";
 831                                                 cid = ast_get_extension_cidmatch(p);
 832                                         } else
 833                                                 sep = cid = "";
 834
 835                                         if (el && (snprintf(label, sizeof(label), "(%s)", el) != (strlen(el) + 2)))
 836                                                 incomplete = 1; /* error encountered or label > 125 chars */
 837
 838                                         fprintf(output, "exten => %s%s%s,%d%s,%s(%s)\n",
 839                                             ast_get_extension_name(p), (ast_strlen_zero(sep) ? "" : sep), (ast_strlen_zero(cid) ? "" : cid),
 840                                             ast_get_extension_priority(p), label,
 841                                             ast_get_extension_app(p), (ast_strlen_zero(ast_get_extension_app_data(p)) ? "" : (const char *)ast_get_extension_app_data(p)));
 842                                 }
 843                         }
 844                 }
 845
 846                 /* written any extensions? ok, write space between exten & inc */
 847                 if (last_written_e)
 848                         fprintf(output, "\n");
 849
 850                 /* walk through includes */
 851                 for (i = NULL; (i = ast_walk_context_includes(c, i)) ; ) {
 852                         if (strcmp(ast_get_include_registrar(i), registrar) != 0)
 853                                 continue; /* not mine */
 854                         PUT_CTX_HDR;
 855                         fprintf(output, "include => %s\n", ast_get_include_name(i));
 856                 }
 857                 if (ast_walk_context_includes(c, NULL))
 858                         fprintf(output, "\n");
 859
 860                 /* walk through switches */
 861                 for (sw = NULL; (sw = ast_walk_context_switches(c, sw)) ; ) {
 862                         if (strcmp(ast_get_switch_registrar(sw), registrar) != 0)
 863                                 continue; /* not mine */
 864                         PUT_CTX_HDR;
 865                         fprintf(output, "switch => %s/%s\n",
 866                                     ast_get_switch_name(sw), ast_get_switch_data(sw));
 867                 }
 868
 869                 if (ast_walk_context_switches(c, NULL))
 870                         fprintf(output, "\n");
 871
 872                 /* fireout ignorepats ... */
 873                 for (ip = NULL; (ip = ast_walk_context_ignorepats(c, ip)); ) {
 874                         if (strcmp(ast_get_ignorepat_registrar(ip), registrar) != 0)
 875                                 continue; /* not mine */
 876                         PUT_CTX_HDR;
 877                         fprintf(output, "ignorepat => %s\n",
 878                                                 ast_get_ignorepat_name(ip));
 879                 }
 880
 881                 ast_unlock_context(c);
 882         }
 883
 884         ast_unlock_contexts();
 885         ast_mutex_unlock(&save_dialplan_lock);
 886         fclose(output);
 887
 888         if (incomplete) {
 889                 ast_cli(a->fd, "Saved dialplan is incomplete\n");
 890                 return CLI_FAILURE;
 891         }
 892
 893         ast_cli(a->fd, "Dialplan successfully saved into '%s'\n",
 894                 filename);
 895         return CLI_SUCCESS;
 896 }
 897
 898 /*!
 899  * \brief ADD EXTENSION command stuff
 900  */
 901 static char *handle_cli_dialplan_add_extension(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 902 {
 903         char *whole_exten;
 904         char *exten, *prior;
 905         int iprior = -2;
 906         char *cidmatch, *app, *app_data;
 907         char *start, *end;
 908
 909         switch (cmd) {
 910         case CLI_INIT:
 911                 e->command = "dialplan add extension";
 912                 e->usage =
 913                         "Usage: dialplan add extension <exten>,<priority>,<app>,<app-data>\n"
 914                         "       into <context> [replace]\n\n"
 915                         "       This command will add new extension into <context>. If there is an\n"
 916                         "       existence of extension with the same priority and last 'replace'\n"
 917                         "       arguments is given here we simply replace this extension.\n"
 918                         "\n"
 919                         "Example: dialplan add extension 6123,1,Dial,IAX/216.207.245.56/6123 into local\n"
 920                         "         Now, you can dial 6123 and talk to Markster :)\n";
 921                 return NULL;
 922         case CLI_GENERATE:
 923                 return complete_dialplan_add_extension(a);
 924         }
 925
 926         /* check for arguments at first */
 927         if (a->argc != 6 && a->argc != 7)
 928                 return CLI_SHOWUSAGE;
 929         if (strcmp(a->argv[4], "into"))
 930                 return CLI_SHOWUSAGE;
 931         if (a->argc == 7)
 932                 if (strcmp(a->argv[6], "replace"))
 933                         return CLI_SHOWUSAGE;
 934
 935         whole_exten = ast_strdupa(a->argv[3]);
 936         exten = strsep(&whole_exten,",");
 937         if (strchr(exten, '/')) {
 938                 cidmatch = exten;
 939                 strsep(&cidmatch,"/");
 940         } else {
 941                 cidmatch = NULL;
 942         }
 943         prior = strsep(&whole_exten,",");
 944         if (prior) {
 945                 if (!strcmp(prior, "hint")) {
 946                         iprior = PRIORITY_HINT;
 947                 } else {
 948                         if (sscanf(prior, "%30d", &iprior) != 1) {
 949                                 ast_cli(a->fd, "'%s' is not a valid priority\n", prior);
 950                                 prior = NULL;
 951                         }
 952                 }
 953         }
 954         app = whole_exten;
 955         if (app && (start = strchr(app, '(')) && (end = strrchr(app, ')'))) {
 956                 *start = *end = '\0';
 957                 app_data = start + 1;
 958         } else {
 959                 if (app) {
 960                         app_data = strchr(app, ',');
 961                         if (app_data) {
 962                                 *app_data = '\0';
 963                                 app_data++;
 964                         }
 965                 } else
 966                         app_data = NULL;
 967         }
 968
 969         if (!exten || !prior || !app || (!app_data && iprior != PRIORITY_HINT))
 970                 return CLI_SHOWUSAGE;
 971
 972         if (!app_data)
 973                 app_data="";
 974         if (ast_add_extension(a->argv[5], a->argc == 7 ? 1 : 0, exten, iprior, NULL, cidmatch, app,
 975                 (void *)strdup(app_data), ast_free_ptr, registrar)) {
 976                 switch (errno) {
 977                 case ENOMEM:
 978                         ast_cli(a->fd, "Out of free memory\n");
 979                         break;
 980
 981                 case EBUSY:
 982                         ast_cli(a->fd, "Failed to lock context(s) list, please try again later\n");
 983                         break;
 984
 985                 case ENOENT:
 986                         ast_cli(a->fd, "No existence of '%s' context\n", a->argv[5]);
 987                         break;
 988
 989                 case EEXIST:
 990                         ast_cli(a->fd, "Extension %s@%s with priority %s already exists\n",
 991                                 exten, a->argv[5], prior);
 992                         break;
 993
 994                 default:
 995                         ast_cli(a->fd, "Failed to add '%s,%s,%s,%s' extension into '%s' context\n",
 996                                         exten, prior, app, app_data, a->argv[5]);
 997                         break;
 998                 }
 999                 return CLI_FAILURE;
1000         }
1001
1002         if (a->argc == 7)
1003                 ast_cli(a->fd, "Extension %s@%s (%s) replace by '%s,%s,%s,%s'\n",
1004                         exten, a->argv[5], prior, exten, prior, app, app_data);
1005         else
1006                 ast_cli(a->fd, "Extension '%s,%s,%s,%s' added into '%s' context\n",
1007                         exten, prior, app, app_data, a->argv[5]);
1008
1009         return CLI_SUCCESS;
1010 }
1011
1012 /*! dialplan add extension 6123,1,Dial,IAX/212.71.138.13/6123 into local */
1013 static char *complete_dialplan_add_extension(struct ast_cli_args *a)
1014 {
1015         int which = 0;
1016
1017         if (a->pos == 4) {              /* complete 'into' word ... */
1018                 return (a->n == 0) ? strdup("into") : NULL;
1019         } else if (a->pos == 5) { /* complete context */
1020                 struct ast_context *c = NULL;
1021                 int len = strlen(a->word);
1022                 char *res = NULL;
1023
1024                 /* try to lock contexts list ... */
1025                 if (ast_rdlock_contexts()) {
1026                         ast_log(LOG_WARNING, "Failed to lock contexts list\n");
1027                         return NULL;
1028                 }
1029
1030                 /* walk through all contexts */
1031                 while ( !res && (c = ast_walk_contexts(c)) )
1032                         if (partial_match(ast_get_context_name(c), a->word, len) && ++which > a->n)
1033                                 res = strdup(ast_get_context_name(c));
1034                 ast_unlock_contexts();
1035                 return res;
1036         } else if (a->pos == 6) {
1037                 return a->n == 0 ? strdup("replace") : NULL;
1038         }
1039         return NULL;
1040 }
1041
1042 /*!
1043  * IGNOREPAT CLI stuff
1044  */
1045 static char *handle_cli_dialplan_add_ignorepat(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1046 {
1047         switch (cmd) {
1048         case CLI_INIT:
1049                 e->command = "dialplan add ignorepat";
1050                 e->usage =
1051                         "Usage: dialplan add ignorepat <pattern> into <context>\n"
1052                         "       This command adds a new ignore pattern into context <context>\n"
1053                         "\n"
1054                         "Example: dialplan add ignorepat _3XX into local\n";
1055                 return NULL;
1056         case CLI_GENERATE:
1057                 return complete_dialplan_add_ignorepat(a);
1058         }
1059
1060         if (a->argc != 6)
1061                 return CLI_SHOWUSAGE;
1062
1063         if (strcmp(a->argv[4], "into"))
1064                 return CLI_SHOWUSAGE;
1065
1066         if (ast_context_add_ignorepat(a->argv[5], a->argv[3], registrar)) {
1067                 switch (errno) {
1068                 case ENOMEM:
1069                         ast_cli(a->fd, "Out of free memory\n");
1070                         break;
1071
1072                 case ENOENT:
1073                         ast_cli(a->fd, "There is no existence of '%s' context\n", a->argv[5]);
1074                         break;
1075
1076                 case EEXIST:
1077                         ast_cli(a->fd, "Ignore pattern '%s' already included in '%s' context\n",
1078                                 a->argv[3], a->argv[5]);
1079                         break;
1080
1081                 case EBUSY:
1082                         ast_cli(a->fd, "Failed to lock context(s) list, please, try again later\n");
1083                         break;
1084
1085                 default:
1086                         ast_cli(a->fd, "Failed to add ingore pattern '%s' into '%s' context\n",
1087                                 a->argv[3], a->argv[5]);
1088                         break;
1089                 }
1090                 return CLI_FAILURE;
1091         }
1092
1093         ast_cli(a->fd, "Ignore pattern '%s' added into '%s' context\n",
1094                 a->argv[3], a->argv[5]);
1095
1096         return CLI_SUCCESS;
1097 }
1098
1099 static char *complete_dialplan_add_ignorepat(struct ast_cli_args *a)
1100 {
1101         if (a->pos == 4)
1102                 return a->n == 0 ? strdup("into") : NULL;
1103         else if (a->pos == 5) {
1104                 struct ast_context *c;
1105                 int which = 0;
1106                 char *dupline, *ignorepat = NULL;
1107                 const char *s;
1108                 char *ret = NULL;
1109                 int len = strlen(a->word);
1110
1111                 /* XXX skip first three words 'dialplan' 'add' 'ignorepat' */
1112                 s = skip_words(a->line, 3);
1113                 if (s == NULL)
1114                         return NULL;
1115                 dupline = strdup(s);
1116                 if (!dupline) {
1117                         ast_log(LOG_ERROR, "Malloc failure\n");
1118                         return NULL;
1119                 }
1120                 ignorepat = strsep(&dupline, " ");
1121
1122                 if (ast_rdlock_contexts()) {
1123                         ast_log(LOG_ERROR, "Failed to lock contexts list\n");
1124                         return NULL;
1125                 }
1126
1127                 for (c = NULL; !ret && (c = ast_walk_contexts(c));) {
1128                         int found = 0;
1129
1130                         if (!partial_match(ast_get_context_name(c), a->word, len))
1131                                 continue; /* not mine */
1132                         if (ignorepat) /* there must be one, right ? */
1133                                 found = lookup_c_ip(c, ignorepat);
1134                         if (!found && ++which > a->n)
1135                                 ret = strdup(ast_get_context_name(c));
1136                 }
1137
1138                 free(ignorepat);
1139                 ast_unlock_contexts();
1140                 return ret;
1141         }
1142
1143         return NULL;
1144 }
1145
1146 static char *handle_cli_dialplan_remove_ignorepat(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1147 {
1148         switch (cmd) {
1149         case CLI_INIT:
1150                 e->command = "dialplan remove ignorepat";
1151                 e->usage =
1152                         "Usage: dialplan remove ignorepat <pattern> from <context>\n"
1153                         "       This command removes an ignore pattern from context <context>\n"
1154                         "\n"
1155                         "Example: dialplan remove ignorepat _3XX from local\n";
1156                 return NULL;
1157         case CLI_GENERATE:
1158                 return complete_dialplan_remove_ignorepat(a);
1159         }
1160
1161         if (a->argc != 6)
1162                 return CLI_SHOWUSAGE;
1163
1164         if (strcmp(a->argv[4], "from"))
1165                 return CLI_SHOWUSAGE;
1166
1167         if (ast_context_remove_ignorepat(a->argv[5], a->argv[3], registrar)) {
1168                 switch (errno) {
1169                 case EBUSY:
1170                         ast_cli(a->fd, "Failed to lock context(s) list, please try again later\n");
1171                         break;
1172
1173                 case ENOENT:
1174                         ast_cli(a->fd, "There is no existence of '%s' context\n", a->argv[5]);
1175                         break;
1176
1177                 case EINVAL:
1178                         ast_cli(a->fd, "There is no existence of '%s' ignore pattern in '%s' context\n",
1179                                         a->argv[3], a->argv[5]);
1180                         break;
1181
1182                 default:
1183                         ast_cli(a->fd, "Failed to remove ignore pattern '%s' from '%s' context\n",
1184                                         a->argv[3], a->argv[5]);
1185                         break;
1186                 }
1187                 return CLI_FAILURE;
1188         }
1189
1190         ast_cli(a->fd, "Ignore pattern '%s' removed from '%s' context\n",
1191                 a->argv[3], a->argv[5]);
1192         return CLI_SUCCESS;
1193 }
1194
1195 static char *complete_dialplan_remove_ignorepat(struct ast_cli_args *a)
1196 {
1197         struct ast_context *c;
1198         int which = 0;
1199         char *ret = NULL;
1200
1201         if (a->pos == 3) {
1202                 int len = strlen(a->word);
1203                 if (ast_rdlock_contexts()) {
1204                         ast_log(LOG_WARNING, "Failed to lock contexts list\n");
1205                         return NULL;
1206                 }
1207
1208                 for (c = NULL; !ret && (c = ast_walk_contexts(c));) {
1209                         struct ast_ignorepat *ip;
1210
1211                         if (ast_rdlock_context(c))      /* error, skip it */
1212                                 continue;
1213
1214                         for (ip = NULL; !ret && (ip = ast_walk_context_ignorepats(c, ip));) {
1215                                 if (partial_match(ast_get_ignorepat_name(ip), a->word, len) && ++which > a->n) {
1216                                         /* n-th match */
1217                                         struct ast_context *cw = NULL;
1218                                         int found = 0;
1219                                         while ( (cw = ast_walk_contexts(cw)) && cw != c && !found) {
1220                                                 /* XXX do i stop on c, or skip it ? */
1221                                                 found = lookup_c_ip(cw, ast_get_ignorepat_name(ip));
1222                                         }
1223                                         if (!found)
1224                                                 ret = strdup(ast_get_ignorepat_name(ip));
1225                                 }
1226                         }
1227                         ast_unlock_context(c);
1228                 }
1229                 ast_unlock_contexts();
1230                 return ret;
1231         } else if (a->pos == 4) {
1232                  return a->n == 0 ? strdup("from") : NULL;
1233         } else if (a->pos == 5) { /* XXX check this */
1234                 char *dupline, *duplinet, *ignorepat;
1235                 int len = strlen(a->word);
1236
1237                 dupline = strdup(a->line);
1238                 if (!dupline) {
1239                         ast_log(LOG_WARNING, "Out of free memory\n");
1240                         return NULL;
1241                 }
1242
1243                 duplinet = dupline;
1244                 strsep(&duplinet, " ");
1245                 strsep(&duplinet, " ");
1246                 ignorepat = strsep(&duplinet, " ");
1247
1248                 if (!ignorepat) {
1249                         free(dupline);
1250                         return NULL;
1251                 }
1252
1253                 if (ast_rdlock_contexts()) {
1254                         ast_log(LOG_WARNING, "Failed to lock contexts list\n");
1255                         free(dupline);
1256                         return NULL;
1257                 }
1258
1259                 for (c = NULL; !ret && (c = ast_walk_contexts(c)); ) {
1260                         if (ast_rdlock_context(c))      /* fail, skip it */
1261                                 continue;
1262                         if (!partial_match(ast_get_context_name(c), a->word, len))
1263                                 continue;
1264                         if (lookup_c_ip(c, ignorepat) && ++which > a->n)
1265                                 ret = strdup(ast_get_context_name(c));
1266                         ast_unlock_context(c);
1267                 }
1268                 ast_unlock_contexts();
1269                 free(dupline);
1270                 return NULL;
1271         }
1272
1273         return NULL;
1274 }
1275
1276 static int pbx_load_module(void);
1277
1278 static char *handle_cli_dialplan_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1279 {
1280         switch (cmd) {
1281         case CLI_INIT:
1282                 e->command = "dialplan reload";
1283                 e->usage =
1284                         "Usage: dialplan reload\n"
1285                         "       Reload extensions.conf without reloading any other\n"
1286                         "       modules.  This command does not delete global variables\n"
1287                         "       unless clearglobalvars is set to yes in extensions.conf\n";
1288                 return NULL;
1289         case CLI_GENERATE:
1290                 return NULL;
1291         }
1292
1293         if (a->argc != 2)
1294                 return CLI_SHOWUSAGE;
1295
1296         if (clearglobalvars_config)
1297                 pbx_builtin_clear_globals();
1298
1299         pbx_load_module();
1300         ast_cli(a->fd, "Dialplan reloaded.\n");
1301         return CLI_SUCCESS;
1302 }
1303
1304 /*!
1305  * CLI entries for commands provided by this module
1306  */
1307 static struct ast_cli_entry cli_pbx_config[] = {
1308         AST_CLI_DEFINE(handle_cli_dialplan_add_extension,    "Add new extension into context"),
1309         AST_CLI_DEFINE(handle_cli_dialplan_remove_extension, "Remove a specified extension"),
1310         AST_CLI_DEFINE(handle_cli_dialplan_add_ignorepat,    "Add new ignore pattern"),
1311         AST_CLI_DEFINE(handle_cli_dialplan_remove_ignorepat, "Remove ignore pattern from context"),
1312         AST_CLI_DEFINE(handle_cli_dialplan_add_include,      "Include context in other context"),
1313         AST_CLI_DEFINE(handle_cli_dialplan_remove_include,   "Remove a specified include from context"),
1314         AST_CLI_DEFINE(handle_cli_dialplan_reload,           "Reload extensions and *only* extensions")
1315 };
1316
1317 static struct ast_cli_entry cli_dialplan_save =
1318         AST_CLI_DEFINE(handle_cli_dialplan_save, "Save dialplan");
1319
1320 /*!
1321  * Standard module functions ...
1322  */
1323 static int unload_module(void)
1324 {
1325         if (static_config && !write_protect_config)
1326                 ast_cli_unregister(&cli_dialplan_save);
1327         if (overrideswitch_config) {
1328                 ast_free(overrideswitch_config);
1329         }
1330         ast_cli_unregister_multiple(cli_pbx_config, ARRAY_LEN(cli_pbx_config));
1331         ast_context_destroy(NULL, registrar);
1332         return 0;
1333 }
1334
1335 /*!\note Protect against misparsing based upon commas in the middle of fields
1336  * like character classes.  We've taken steps to permit pretty much every other
1337  * printable character in a character class, so properly handling a comma at
1338  * this level is a natural extension.  This is almost like the standard
1339  * application parser in app.c, except that it handles square brackets. */
1340 static char *pbx_strsep(char **destructible, const char *delim)
1341 {
1342         int square = 0;
1343         char *res = *destructible;
1344         for (; destructible && *destructible && **destructible; (*destructible)++) {
1345                 if (**destructible == '[' && !strchr(delim, '[')) {
1346                         square++;
1347                 } else if (**destructible == ']' && !strchr(delim, ']')) {
1348                         if (square) {
1349                                 square--;
1350                         }
1351                 } else if (**destructible == '\\' && !strchr(delim, '\\')) {
1352                         (*destructible)++;
1353                 } else if (strchr(delim, **destructible) && !square) {
1354                         **destructible = '\0';
1355                         (*destructible)++;
1356                         break;
1357                 }
1358         }
1359         if (destructible && *destructible && **destructible == '\0') {
1360                 *destructible = NULL;
1361         }
1362         return res;
1363 }
1364
1365 static int pbx_load_config(const char *config_file)
1366 {
1367         struct ast_config *cfg;
1368         char *end;
1369         char *label;
1370 #ifdef LOW_MEMORY
1371         char realvalue[256];
1372 #else
1373         char realvalue[8192];
1374 #endif
1375         int lastpri = -2;
1376         struct ast_context *con;
1377         struct ast_variable *v;
1378         const char *cxt;
1379         const char *aft;
1380         const char *newpm, *ovsw;
1381         struct ast_flags config_flags = { 0 };
1382         char lastextension[256];
1383         cfg = ast_config_load(config_file, config_flags);
1384         if (!cfg || cfg == CONFIG_STATUS_FILEINVALID)
1385                 return 0;
1386
1387         /* Use existing config to populate the PBX table */
1388         static_config = ast_true(ast_variable_retrieve(cfg, "general", "static"));
1389         write_protect_config = ast_true(ast_variable_retrieve(cfg, "general", "writeprotect"));
1390         if ((aft = ast_variable_retrieve(cfg, "general", "autofallthrough")))
1391                 autofallthrough_config = ast_true(aft);
1392         if ((newpm = ast_variable_retrieve(cfg, "general", "extenpatternmatchnew")))
1393                 extenpatternmatchnew_config = ast_true(newpm);
1394         clearglobalvars_config = ast_true(ast_variable_retrieve(cfg, "general", "clearglobalvars"));
1395         if ((ovsw = ast_variable_retrieve(cfg, "general", "overrideswitch"))) {
1396                 if (overrideswitch_config) {
1397                         ast_free(overrideswitch_config);
1398                 }
1399                 if (!ast_strlen_zero(ovsw)) {
1400                         overrideswitch_config = ast_strdup(ovsw);
1401                 } else {
1402                         overrideswitch_config = NULL;
1403                 }
1404         }
1405
1406         ast_copy_string(userscontext, ast_variable_retrieve(cfg, "general", "userscontext") ?: "default", sizeof(userscontext));
1407
1408         for (v = ast_variable_browse(cfg, "globals"); v; v = v->next) {
1409                 pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
1410                 pbx_builtin_setvar_helper(NULL, v->name, realvalue);
1411         }
1412         for (cxt = ast_category_browse(cfg, NULL);
1413              cxt;
1414              cxt = ast_category_browse(cfg, cxt)) {
1415                 /* All categories but "general" or "globals" are considered contexts */
1416                 if (!strcasecmp(cxt, "general") || !strcasecmp(cxt, "globals")) {
1417                         continue;
1418                 }
1419                 if (!(con = ast_context_find_or_create(&local_contexts, local_table, cxt, registrar))) {
1420                         continue;
1421                 }
1422
1423                 /* Reset continuation items at the beginning of each context */
1424                 lastextension[0] = '\0';
1425                 lastpri = -2;
1426
1427                 for (v = ast_variable_browse(cfg, cxt); v; v = v->next) {
1428                         char *tc = NULL;
1429                         char realext[256] = "";
1430                         char *stringp, *ext;
1431
1432                         if (!strncasecmp(v->name, "same", 4)) {
1433                                 if (ast_strlen_zero(lastextension)) {
1434                                         ast_log(LOG_ERROR, "No previous pattern in the first entry of context '%s' to match '%s' at line %d!\n", cxt, v->name, v->lineno);
1435                                         continue;
1436                                 }
1437                                 if ((stringp = tc = ast_strdup(v->value))) {
1438                                         ast_copy_string(realext, lastextension, sizeof(realext));
1439                                         goto process_extension;
1440                                 }
1441                         } else if (!strcasecmp(v->name, "exten")) {
1442                                 int ipri;
1443                                 char *plus, *firstp;
1444                                 char *pri, *appl, *data, *cidmatch;
1445
1446                                 if (!(stringp = tc = ast_strdup(v->value))) {
1447                                         continue;
1448                                 }
1449
1450                                 ext = S_OR(pbx_strsep(&stringp, ","), "");
1451                                 pbx_substitute_variables_helper(NULL, ext, realext, sizeof(realext) - 1);
1452                                 ast_copy_string(lastextension, realext, sizeof(lastextension));
1453 process_extension:
1454                                 ipri = -2;
1455                                 if ((cidmatch = strchr(realext, '/'))) {
1456                                         *cidmatch++ = '\0';
1457                                         ast_shrink_phone_number(cidmatch);
1458                                 }
1459                                 pri = S_OR(strsep(&stringp, ","), "");
1460                                 pri = ast_skip_blanks(pri);
1461                                 pri = ast_trim_blanks(pri);
1462                                 if ((label = strchr(pri, '('))) {
1463                                         *label++ = '\0';
1464                                         if ((end = strchr(label, ')'))) {
1465                                                 *end = '\0';
1466                                         } else {
1467                                                 ast_log(LOG_WARNING, "Label missing trailing ')' at line %d\n", v->lineno);
1468                                         }
1469                                 }
1470                                 if ((plus = strchr(pri, '+'))) {
1471                                         *plus++ = '\0';
1472                                 }
1473                                 if (!strcmp(pri,"hint")) {
1474                                         ipri = PRIORITY_HINT;
1475                                 } else if (!strcmp(pri, "next") || !strcmp(pri, "n")) {
1476                                         if (lastpri > -2) {
1477                                                 ipri = lastpri + 1;
1478                                         } else {
1479                                                 ast_log(LOG_WARNING, "Can't use 'next' priority on the first entry at line %d!\n", v->lineno);
1480                                         }
1481                                 } else if (!strcmp(pri, "same") || !strcmp(pri, "s")) {
1482                                         if (lastpri > -2) {
1483                                                 ipri = lastpri;
1484                                         } else {
1485                                                 ast_log(LOG_WARNING, "Can't use 'same' priority on the first entry at line %d!\n", v->lineno);
1486                                         }
1487                                 } else if (sscanf(pri, "%30d", &ipri) != 1 &&
1488                                            (ipri = ast_findlabel_extension2(NULL, con, realext, pri, cidmatch)) < 1) {
1489                                         ast_log(LOG_WARNING, "Invalid priority/label '%s' at line %d\n", pri, v->lineno);
1490                                         ipri = 0;
1491                                 }
1492                                 appl = S_OR(stringp, "");
1493                                 /* Find the first occurrence of '(' */
1494                                 if (!(firstp = strchr(appl, '('))) {
1495                                         /* No arguments */
1496                                         data = "";
1497                                 } else {
1498                                         char *orig_appl = ast_strdup(appl);
1499
1500                                         if (!orig_appl)
1501                                                 return -1;
1502
1503                                         appl = strsep(&stringp, "(");
1504
1505                                         /* check if there are variables or expressions without an application, like: exten => 100,hint,DAHDI/g0/${GLOBAL(var)}  */
1506                                         if (strstr(appl, "${") || strstr(appl, "$[")){
1507                                                 /* set appl to original one */
1508                                                 strcpy(appl, orig_appl);
1509                                                 /* set no data */
1510                                                 data = "";
1511                                         /* no variable before application found -> go ahead */
1512                                         } else {
1513                                                 data = S_OR(stringp, "");
1514                                                 if ((end = strrchr(data, ')'))) {
1515                                                         *end = '\0';
1516                                                 } else {
1517                                                         ast_log(LOG_WARNING, "No closing parenthesis found? '%s(%s' at line %d\n", appl, data, v->lineno);
1518                                                 }
1519                                         }
1520                                         ast_free(orig_appl);
1521                                 }
1522
1523                                 appl = ast_skip_blanks(appl);
1524                                 if (ipri) {
1525                                         if (plus) {
1526                                                 ipri += atoi(plus);
1527                                         }
1528                                         lastpri = ipri;
1529                                         if (!ast_opt_dont_warn && !strcmp(realext, "_.")) {
1530                                                 ast_log(LOG_WARNING, "The use of '_.' for an extension is strongly discouraged and can have unexpected behavior.  Please use '_X.' instead at line %d\n", v->lineno);
1531                                         }
1532                                         if (ast_add_extension2(con, 0, realext, ipri, label, cidmatch, appl, strdup(data), ast_free_ptr, registrar)) {
1533                                                 ast_log(LOG_WARNING, "Unable to register extension at line %d\n", v->lineno);
1534                                         }
1535                                 }
1536                                 free(tc);
1537                         } else if (!strcasecmp(v->name, "include")) {
1538                                 pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
1539                                 if (ast_context_add_include2(con, realvalue, registrar)) {
1540                                         switch (errno) {
1541                                                 case ENOMEM:
1542                                                         ast_log(LOG_WARNING, "Out of memory for context addition\n");
1543                                                         break;
1544
1545                                                 case EBUSY:
1546                                                         ast_log(LOG_WARNING, "Failed to lock context(s) list, please try again later\n");
1547                                                         break;
1548
1549                                                 case EEXIST:
1550                                                         ast_log(LOG_WARNING, "Context '%s' already included in '%s' context on include at line %d\n",
1551                                                                         v->value, cxt, v->lineno);
1552                                                         break;
1553
1554                                                 case ENOENT:
1555                                                 case EINVAL:
1556                                                         ast_log(LOG_WARNING, "There is no existence of context '%s' included at line %d\n",
1557                                                                         errno == ENOENT ? v->value : cxt, v->lineno);
1558                                                         break;
1559
1560                                                 default:
1561                                                         ast_log(LOG_WARNING, "Failed to include '%s' in '%s' context at line %d\n",
1562                                                                         v->value, cxt, v->lineno);
1563                                                         break;
1564                                         }
1565                                 }
1566                         } else if (!strcasecmp(v->name, "ignorepat")) {
1567                                 pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
1568                                 if (ast_context_add_ignorepat2(con, realvalue, registrar)) {
1569                                         ast_log(LOG_WARNING, "Unable to include ignorepat '%s' in context '%s' at line %d\n", v->value, cxt, v->lineno);
1570                                 }
1571                         } else if (!strcasecmp(v->name, "switch") || !strcasecmp(v->name, "lswitch") || !strcasecmp(v->name, "eswitch")) {
1572                                 char *stringp = realvalue;
1573                                 char *appl, *data;
1574
1575                                 if (!strcasecmp(v->name, "switch")) {
1576                                         pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
1577                                 } else {
1578                                         ast_copy_string(realvalue, v->value, sizeof(realvalue));
1579                                 }
1580                                 appl = strsep(&stringp, "/");
1581                                 data = S_OR(stringp, "");
1582                                 if (ast_context_add_switch2(con, appl, data, !strcasecmp(v->name, "eswitch"), registrar)) {
1583                                         ast_log(LOG_WARNING, "Unable to include switch '%s' in context '%s' at line %d\n", v->value, cxt, v->lineno);
1584                                 }
1585                         } else {
1586                                 ast_log(LOG_WARNING, "==!!== Unknown directive: %s at line %d -- IGNORING!!!\n", v->name, v->lineno);
1587                         }
1588                 }
1589         }
1590         ast_config_destroy(cfg);
1591         return 1;
1592 }
1593
1594 static void append_interface(char *iface, int maxlen, char *add)
1595 {
1596         int len = strlen(iface);
1597         if (strlen(add) + len < maxlen - 2) {
1598                 if (strlen(iface)) {
1599                         iface[len] = '&';
1600                         strcpy(iface + len + 1, add);
1601                 } else
1602                         strcpy(iface, add);
1603         }
1604 }
1605
1606 static void pbx_load_users(void)
1607 {
1608         struct ast_config *cfg;
1609         char *cat, *chan;
1610         const char *dahdichan;
1611         const char *hasexten, *altexts;
1612         char tmp[256];
1613         char iface[256];
1614         char dahdicopy[256];
1615         char *ext, altcopy[256];
1616         char *c;
1617         int len;
1618         int hasvoicemail;
1619         int start, finish, x;
1620         struct ast_context *con = NULL;
1621         struct ast_flags config_flags = { 0 };
1622
1623         cfg = ast_config_load("users.conf", config_flags);
1624         if (!cfg)
1625                 return;
1626
1627         for (cat = ast_category_browse(cfg, NULL); cat ; cat = ast_category_browse(cfg, cat)) {
1628                 if (!strcasecmp(cat, "general"))
1629                         continue;
1630                 iface[0] = '\0';
1631                 len = sizeof(iface);
1632                 if (ast_true(ast_config_option(cfg, cat, "hassip"))) {
1633                         snprintf(tmp, sizeof(tmp), "SIP/%s", cat);
1634                         append_interface(iface, sizeof(iface), tmp);
1635                 }
1636                 if (ast_true(ast_config_option(cfg, cat, "hasiax"))) {
1637                         snprintf(tmp, sizeof(tmp), "IAX2/%s", cat);
1638                         append_interface(iface, sizeof(iface), tmp);
1639                 }
1640                 if (ast_true(ast_config_option(cfg, cat, "hash323"))) {
1641                         snprintf(tmp, sizeof(tmp), "H323/%s", cat);
1642                         append_interface(iface, sizeof(iface), tmp);
1643                 }
1644                 hasexten = ast_config_option(cfg, cat, "hasexten");
1645                 if (hasexten && !ast_true(hasexten))
1646                         continue;
1647                 hasvoicemail = ast_true(ast_config_option(cfg, cat, "hasvoicemail"));
1648                 dahdichan = ast_variable_retrieve(cfg, cat, "dahdichan");
1649                 if (!dahdichan)
1650                         dahdichan = ast_variable_retrieve(cfg, "general", "dahdichan");
1651                 if (!ast_strlen_zero(dahdichan)) {
1652                         ast_copy_string(dahdicopy, dahdichan, sizeof(dahdicopy));
1653                         c = dahdicopy;
1654                         chan = strsep(&c, ",");
1655                         while (chan) {
1656                                 if (sscanf(chan, "%30d-%30d", &start, &finish) == 2) {
1657                                         /* Range */
1658                                 } else if (sscanf(chan, "%30d", &start)) {
1659                                         /* Just one */
1660                                         finish = start;
1661                                 } else {
1662                                         start = 0; finish = 0;
1663                                 }
1664                                 if (finish < start) {
1665                                         x = finish;
1666                                         finish = start;
1667                                         start = x;
1668                                 }
1669                                 for (x = start; x <= finish; x++) {
1670                                         snprintf(tmp, sizeof(tmp), "DAHDI/%d", x);
1671                                         append_interface(iface, sizeof(iface), tmp);
1672                                 }
1673                                 chan = strsep(&c, ",");
1674                         }
1675                 }
1676                 if (!ast_strlen_zero(iface)) {
1677                         /* Only create a context here when it is really needed. Otherwise default empty context
1678                         created by pbx_config may conflict with the one explicitly created by pbx_ael */
1679                         if (!con)
1680                                 con = ast_context_find_or_create(&local_contexts, local_table, userscontext, registrar);
1681
1682                         if (!con) {
1683                                 ast_log(LOG_ERROR, "Can't find/create user context '%s'\n", userscontext);
1684                                 return;
1685                         }
1686
1687                         /* Add hint */
1688                         ast_add_extension2(con, 0, cat, -1, NULL, NULL, iface, NULL, NULL, registrar);
1689                         /* If voicemail, use "stdexten" else use plain old dial */
1690                         if (hasvoicemail) {
1691                                 snprintf(tmp, sizeof(tmp), "stdexten,%s,${HINT}", cat);
1692                                 ast_add_extension2(con, 0, cat, 1, NULL, NULL, "Macro", strdup(tmp), ast_free_ptr, registrar);
1693                         } else {
1694                                 ast_add_extension2(con, 0, cat, 1, NULL, NULL, "Dial", strdup("${HINT}"), ast_free_ptr, registrar);
1695                         }
1696                         altexts = ast_variable_retrieve(cfg, cat, "alternateexts");
1697                         if (!ast_strlen_zero(altexts)) {
1698                                 snprintf(tmp, sizeof(tmp), "%s,1", cat);
1699                                 ast_copy_string(altcopy, altexts, sizeof(altcopy));
1700                                 c = altcopy;
1701                                 ext = strsep(&c, ",");
1702                                 while (ext) {
1703                                         ast_add_extension2(con, 0, ext, 1, NULL, NULL, "Goto", strdup(tmp), ast_free_ptr, registrar);
1704                                         ext = strsep(&c, ",");
1705                                 }
1706                         }
1707                 }
1708         }
1709         ast_config_destroy(cfg);
1710 }
1711
1712 static int pbx_load_module(void)
1713 {
1714         struct ast_context *con;
1715
1716         if (!local_table)
1717                 local_table = ast_hashtab_create(17, ast_hashtab_compare_contexts, ast_hashtab_resize_java, ast_hashtab_newsize_java, ast_hashtab_hash_contexts, 0);
1718
1719         if (!pbx_load_config(config))
1720                 return AST_MODULE_LOAD_DECLINE;
1721
1722         pbx_load_users();
1723
1724         ast_merge_contexts_and_delete(&local_contexts, local_table, registrar);
1725         local_table = NULL; /* the local table has been moved into the global one. */
1726         local_contexts = NULL;
1727
1728         for (con = NULL; (con = ast_walk_contexts(con));)
1729                 ast_context_verify_includes(con);
1730
1731         pbx_set_overrideswitch(overrideswitch_config);
1732         pbx_set_autofallthrough(autofallthrough_config);
1733         pbx_set_extenpatternmatchnew(extenpatternmatchnew_config);
1734
1735         return AST_MODULE_LOAD_SUCCESS;
1736 }
1737
1738 static int load_module(void)
1739 {
1740         if (pbx_load_module())
1741                 return AST_MODULE_LOAD_DECLINE;
1742
1743         if (static_config && !write_protect_config)
1744                 ast_cli_register(&cli_dialplan_save);
1745         ast_cli_register_multiple(cli_pbx_config, ARRAY_LEN(cli_pbx_config));
1746
1747         return AST_MODULE_LOAD_SUCCESS;
1748 }
1749
1750 static int reload(void)
1751 {
1752         if (clearglobalvars_config)
1753                 pbx_builtin_clear_globals();
1754         return pbx_load_module();
1755 }
1756
1757 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Text Extension Configuration",
1758                 .load = load_module,
1759                 .unload = unload_module,
1760                 .reload = reload,
1761                );