Wed Aug 18 22:33:54 2010

Asterisk developer's documentation


pbx_config.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2006, Digium, Inc.
00005  *
00006  * Mark Spencer <markster@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  *
00021  * \brief Populate and remember extensions from static config file
00022  *
00023  * 
00024  */
00025 
00026 #include "asterisk.h"
00027 
00028 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 262426 $")
00029 
00030 #include <ctype.h>
00031 
00032 #include "asterisk/paths.h"   /* ast_config_AST_CONFIG_DIR */
00033 #include "asterisk/pbx.h"
00034 #include "asterisk/config.h"
00035 #include "asterisk/module.h"
00036 #include "asterisk/logger.h"
00037 #include "asterisk/cli.h"
00038 #include "asterisk/channel.h" /* AST_MAX_EXTENSION */
00039 #include "asterisk/callerid.h"
00040 
00041 static char *config = "extensions.conf";
00042 static char *registrar = "pbx_config";
00043 static char userscontext[AST_MAX_EXTENSION] = "default";
00044 
00045 static int static_config = 0;
00046 static int write_protect_config = 1;
00047 static int autofallthrough_config = 1;
00048 static int clearglobalvars_config = 0;
00049 static int extenpatternmatchnew_config = 0;
00050 static char *overrideswitch_config = NULL;
00051 
00052 AST_MUTEX_DEFINE_STATIC(save_dialplan_lock);
00053 
00054 static struct ast_context *local_contexts = NULL;
00055 static struct ast_hashtab *local_table = NULL;
00056 /*
00057  * Prototypes for our completion functions
00058  */
00059 static char *complete_dialplan_remove_include(struct ast_cli_args *);
00060 static char *complete_dialplan_add_include(struct ast_cli_args *);
00061 static char *complete_dialplan_remove_ignorepat(struct ast_cli_args *);
00062 static char *complete_dialplan_add_ignorepat(struct ast_cli_args *);
00063 static char *complete_dialplan_remove_extension(struct ast_cli_args *);
00064 static char *complete_dialplan_add_extension(struct ast_cli_args *);
00065 
00066 /*
00067  * Implementation of functions provided by this module
00068  */
00069 
00070 /*!
00071  * REMOVE INCLUDE command stuff
00072  */
00073 static char *handle_cli_dialplan_remove_include(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
00074 {
00075    switch (cmd) {
00076    case CLI_INIT:
00077       e->command = "dialplan remove include";
00078       e->usage =
00079          "Usage: dialplan remove include <context> from <context>\n"
00080          "       Remove an included context from another context.\n";
00081       return NULL;
00082    case CLI_GENERATE:
00083       return complete_dialplan_remove_include(a);
00084    }
00085 
00086    if (strcmp(a->argv[4], "from"))
00087       return CLI_SHOWUSAGE;
00088 
00089    if (!ast_context_remove_include(a->argv[5], a->argv[3], registrar)) {
00090       ast_cli(a->fd, "We are not including '%s' into '%s' now\n",
00091          a->argv[3], a->argv[5]);
00092       return CLI_SUCCESS;
00093    }
00094 
00095    ast_cli(a->fd, "Failed to remove '%s' include from '%s' context\n",
00096       a->argv[3], a->argv[5]);
00097    return CLI_FAILURE;
00098 }
00099 
00100 /*! \brief return true if 'name' is included by context c */
00101 static int lookup_ci(struct ast_context *c, const char *name)
00102 {
00103    struct ast_include *i = NULL;
00104 
00105    if (ast_rdlock_context(c)) /* error, skip */
00106       return 0;
00107    while ( (i = ast_walk_context_includes(c, i)) )
00108       if (!strcmp(name, ast_get_include_name(i)))
00109          break;
00110    ast_unlock_context(c);
00111    return i ? -1 /* success */ : 0;
00112 }
00113 
00114 /*! \brief return true if 'name' is in the ignorepats for context c */
00115 static int lookup_c_ip(struct ast_context *c, const char *name)
00116 {
00117    struct ast_ignorepat *ip = NULL;
00118 
00119    if (ast_rdlock_context(c)) /* error, skip */
00120       return 0;
00121    while ( (ip = ast_walk_context_ignorepats(c, ip)) )
00122       if (!strcmp(name, ast_get_ignorepat_name(ip)))
00123          break;
00124    ast_unlock_context(c);
00125    return ip ? -1 /* success */ : 0;
00126 }
00127 
00128 /*! \brief moves to the n-th word in the string, or empty string if none */
00129 static const char *skip_words(const char *p, int n)
00130 {
00131    int in_blank = 0;
00132    for (;n && *p; p++) {
00133       if (isblank(*p) /* XXX order is important */ && !in_blank) {
00134          n--;  /* one word is gone */
00135          in_blank = 1;
00136       } else if (/* !is_blank(*p), we know already, && */ in_blank) {
00137          in_blank = 0;
00138       }
00139    }
00140    return p;
00141 }
00142 
00143 /*! \brief match the first 'len' chars of word. len==0 always succeeds */
00144 static int partial_match(const char *s, const char *word, int len)
00145 {
00146    return (len == 0 || !strncmp(s, word, len));
00147 }
00148 
00149 /*! \brief split extension\@context in two parts, return -1 on error.
00150  * The return string is malloc'ed and pointed by *ext
00151  */
00152 static int split_ec(const char *src, char **ext, char ** const ctx, char ** const cid)
00153 {
00154    char *i, *c, *e = ast_strdup(src); /* now src is not used anymore */
00155 
00156    if (e == NULL)
00157       return -1;  /* malloc error */
00158    /* now, parse values from 'exten@context' */
00159    *ext = e;
00160    c = strchr(e, '@');
00161    if (c == NULL) /* no context part */
00162       *ctx = "";  /* it is not overwritten, anyways */
00163    else {   /* found context, check for duplicity ... */
00164       *c++ = '\0';
00165       *ctx = c;
00166       if (strchr(c, '@')) { /* two @, not allowed */
00167          free(e);
00168          return -1;
00169       }
00170    }
00171    if (cid && (i = strchr(e, '/'))) {
00172       *i++ = '\0';
00173       *cid = i;
00174    } else if (cid) {
00175       /* Signal none detected */
00176       *cid = NULL;
00177    }
00178    return 0;
00179 }
00180 
00181 /* _X_ is the string we need to complete */
00182 static char *complete_dialplan_remove_include(struct ast_cli_args *a)
00183 {
00184    int which = 0;
00185    char *res = NULL;
00186    int len = strlen(a->word); /* how many bytes to match */
00187    struct ast_context *c = NULL;
00188 
00189    if (a->pos == 3) {      /* "dialplan remove include _X_" */
00190       if (ast_wrlock_contexts()) {
00191          ast_log(LOG_ERROR, "Failed to lock context list\n");
00192          return NULL;
00193       }
00194       /* walk contexts and their includes, return the n-th match */
00195       while (!res && (c = ast_walk_contexts(c))) {
00196          struct ast_include *i = NULL;
00197 
00198          if (ast_rdlock_context(c)) /* error ? skip this one */
00199             continue;
00200 
00201          while ( !res && (i = ast_walk_context_includes(c, i)) ) {
00202             const char *i_name = ast_get_include_name(i);
00203             struct ast_context *nc = NULL;
00204             int already_served = 0;
00205 
00206             if (!partial_match(i_name, a->word, len))
00207                continue;   /* not matched */
00208 
00209             /* check if this include is already served or not */
00210 
00211             /* go through all contexts again till we reach actual
00212              * context or already_served = 1
00213              */
00214             while ( (nc = ast_walk_contexts(nc)) && nc != c && !already_served)
00215                already_served = lookup_ci(nc, i_name);
00216 
00217             if (!already_served && ++which > a->n)
00218                res = strdup(i_name);
00219          }
00220          ast_unlock_context(c);
00221       }
00222 
00223       ast_unlock_contexts();
00224       return res;
00225    } else if (a->pos == 4) { /* "dialplan remove include CTX _X_" */
00226       /*
00227        * complete as 'from', but only if previous context is really
00228        * included somewhere
00229        */
00230       char *context, *dupline;
00231       const char *s = skip_words(a->line, 3); /* skip 'dialplan' 'remove' 'include' */
00232 
00233       if (a->n > 0)
00234          return NULL;
00235       context = dupline = strdup(s);
00236       if (!dupline) {
00237          ast_log(LOG_ERROR, "Out of free memory\n");
00238          return NULL;
00239       }
00240       strsep(&dupline, " ");
00241 
00242       if (ast_rdlock_contexts()) {
00243          ast_log(LOG_ERROR, "Failed to lock contexts list\n");
00244          free(context);
00245          return NULL;
00246       }
00247 
00248       /* go through all contexts and check if is included ... */
00249       while (!res && (c = ast_walk_contexts(c)))
00250          if (lookup_ci(c, context)) /* context is really included, complete "from" command */
00251             res = strdup("from");
00252       ast_unlock_contexts();
00253       if (!res)
00254          ast_log(LOG_WARNING, "%s not included anywhere\n", context);
00255       free(context);
00256       return res;
00257    } else if (a->pos == 5) { /* "dialplan remove include CTX from _X_" */
00258       /*
00259        * Context from which we removing include ... 
00260        */
00261       char *context, *dupline, *from;
00262       const char *s = skip_words(a->line, 3); /* skip 'dialplan' 'remove' 'include' */
00263       context = dupline = strdup(s);
00264       if (!dupline) {
00265          ast_log(LOG_ERROR, "Out of free memory\n");
00266          return NULL;
00267       }
00268 
00269       strsep(&dupline, " "); /* skip context */
00270 
00271       /* fourth word must be 'from' */
00272       from = strsep(&dupline, " ");
00273       if (!from || strcmp(from, "from")) {
00274          free(context);
00275          return NULL;
00276       }
00277 
00278       if (ast_rdlock_contexts()) {
00279          ast_log(LOG_ERROR, "Failed to lock context list\n");
00280          free(context);
00281          return NULL;
00282       }
00283 
00284       /* walk through all contexts ... */
00285       c = NULL;
00286       while ( !res && (c = ast_walk_contexts(c))) {
00287          const char *c_name = ast_get_context_name(c);
00288          if (!partial_match(c_name, a->word, len)) /* not a good target */
00289             continue;
00290          /* walk through all includes and check if it is our context */ 
00291          if (lookup_ci(c, context) && ++which > a->n)
00292             res = strdup(c_name);
00293       }
00294       ast_unlock_contexts();
00295       free(context);
00296       return res;
00297    }
00298 
00299    return NULL;
00300 }
00301 
00302 /*!
00303  * REMOVE EXTENSION command stuff
00304  */
00305 static char *handle_cli_dialplan_remove_extension(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
00306 {
00307    int removing_priority = 0;
00308    char *exten, *context, *cid;
00309    char *ret = CLI_FAILURE;
00310 
00311    switch (cmd) {
00312    case CLI_INIT:
00313       e->command = "dialplan remove extension";
00314       e->usage =
00315          "Usage: dialplan remove extension exten[/cid]@context [priority]\n"
00316          "       Remove an extension from a given context. If a priority\n"
00317          "       is given, only that specific priority from the given extension\n"
00318          "       will be removed.\n";
00319       return NULL;
00320    case CLI_GENERATE:
00321       return complete_dialplan_remove_extension(a);
00322    }
00323 
00324    if (a->argc != 5 && a->argc != 4)
00325       return CLI_SHOWUSAGE;
00326 
00327    /*
00328     * Priority input checking ...
00329     */
00330    if (a->argc == 5) {
00331       char *c = a->argv[4];
00332 
00333       /* check for digits in whole parameter for right priority ...
00334        * why? because atoi (strtol) returns 0 if any characters in
00335        * string and whole extension will be removed, it's not good
00336        */
00337       if (!strcmp("hint", c))
00338          removing_priority = PRIORITY_HINT;
00339       else {
00340          while (*c && isdigit(*c))
00341             c++;
00342          if (*c) { /* non-digit in string */
00343             ast_cli(a->fd, "Invalid priority '%s'\n", a->argv[4]);
00344             return CLI_FAILURE;
00345          }
00346          removing_priority = atoi(a->argv[4]);
00347       }
00348 
00349       if (removing_priority == 0) {
00350          ast_cli(a->fd, "If you want to remove whole extension, please " \
00351             "omit priority argument\n");
00352          return CLI_FAILURE;
00353       }
00354    }
00355 
00356    /* XXX original overwrote argv[3] */
00357    /*
00358     * Format exten@context checking ...
00359     */
00360    if (split_ec(a->argv[3], &exten, &context, &cid))
00361       return CLI_FAILURE; /* XXX malloc failure */
00362    if ((!strlen(exten)) || (!(strlen(context)))) {
00363       ast_cli(a->fd, "Missing extension or context name in third argument '%s'\n",
00364          a->argv[3]);
00365       free(exten);
00366       return CLI_FAILURE;
00367    }
00368 
00369    if (!ast_context_remove_extension_callerid(context, exten, removing_priority,
00370          /* Do NOT substitute S_OR; it is NOT the same thing */
00371          cid ? cid : (removing_priority ? "" : NULL), cid ? 1 : 0, registrar)) {
00372       if (!removing_priority)
00373          ast_cli(a->fd, "Whole extension %s@%s removed\n",
00374             exten, context);
00375       else
00376          ast_cli(a->fd, "Extension %s@%s with priority %d removed\n",
00377             exten, context, removing_priority);
00378          
00379       ret = CLI_SUCCESS;
00380    } else {
00381       if (cid) {
00382          ast_cli(a->fd, "Failed to remove extension %s/%s@%s\n", exten, cid, context);
00383       } else {
00384          ast_cli(a->fd, "Failed to remove extension %s@%s\n", exten, context);
00385       }
00386       ret = CLI_FAILURE;
00387    }
00388    free(exten);
00389    return ret;
00390 }
00391 
00392 static char *complete_dialplan_remove_extension(struct ast_cli_args *a)
00393 {
00394    char *ret = NULL;
00395    int which = 0;
00396 
00397    if (a->pos == 3) { /* 'dialplan remove extension _X_' (exten@context ... */
00398       struct ast_context *c = NULL;
00399       char *context = NULL, *exten = NULL, *cid = NULL;
00400       int le = 0; /* length of extension */
00401       int lc = 0; /* length of context */
00402       int lcid = 0; /* length of cid */
00403 
00404       lc = split_ec(a->word, &exten, &context, &cid);
00405       if (lc)  { /* error */
00406          return NULL;
00407       }
00408       le = strlen(exten);
00409       lc = strlen(context);
00410       lcid = cid ? strlen(cid) : -1;
00411 
00412       if (ast_rdlock_contexts()) {
00413          ast_log(LOG_ERROR, "Failed to lock context list\n");
00414          goto error2;
00415       }
00416 
00417       /* find our context ... */
00418       while ( (c = ast_walk_contexts(c)) ) { /* match our context if any */
00419          struct ast_exten *e = NULL;
00420          /* XXX locking ? */
00421          if (!partial_match(ast_get_context_name(c), context, lc))
00422             continue;   /* context not matched */
00423          while ( (e = ast_walk_context_extensions(c, e)) ) { /* try to complete extensions ... */
00424             if ( !strchr(a->word, '/') ||
00425                   (!strchr(a->word, '@') && partial_match(ast_get_extension_cidmatch(e), cid, lcid)) ||
00426                   (strchr(a->word, '@') && !strcmp(ast_get_extension_cidmatch(e), cid))) {
00427                if ( ((strchr(a->word, '/') || strchr(a->word, '@')) && !strcmp(ast_get_extension_name(e), exten)) ||
00428                    (!strchr(a->word, '/') && !strchr(a->word, '@') && partial_match(ast_get_extension_name(e), exten, le))) { /* n-th match */
00429                   if (++which > a->n) {
00430                      /* If there is an extension then return exten@context. */
00431                      if (ast_get_extension_matchcid(e) && (!strchr(a->word, '@') || strchr(a->word, '/'))) {
00432                         if (asprintf(&ret, "%s/%s@%s", ast_get_extension_name(e), ast_get_extension_cidmatch(e), ast_get_context_name(c)) < 0) {
00433                            ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00434                            ret = NULL;
00435                         }
00436                         break;
00437                      } else if (!ast_get_extension_matchcid(e) && !strchr(a->word, '/')) {
00438                         if (asprintf(&ret, "%s@%s", ast_get_extension_name(e), ast_get_context_name(c)) < 0) {
00439                            ast_log(LOG_WARNING, "asprintf() failed: %s\n", strerror(errno));
00440                            ret = NULL;
00441                         }
00442                         break;
00443                      }
00444                   }
00445                }
00446             }
00447          }
00448          if (e)   /* got a match */
00449             break;
00450       }
00451 
00452       ast_unlock_contexts();
00453    error2:
00454       free(exten);
00455    } else if (a->pos == 4) { /* 'dialplan remove extension EXT _X_' (priority) */
00456       char *exten = NULL, *context, *cid, *p;
00457       struct ast_context *c;
00458       int le, lc, lcid, len;
00459       const char *s = skip_words(a->line, 3); /* skip 'dialplan' 'remove' 'extension' */
00460       int i = split_ec(s, &exten, &context, &cid); /* parse ext@context */
00461 
00462       if (i)   /* error */
00463          goto error3;
00464       if ( (p = strchr(exten, ' ')) ) /* remove space after extension */
00465          *p = '\0';
00466       if ( (p = strchr(context, ' ')) ) /* remove space after context */
00467          *p = '\0';
00468       le = strlen(exten);
00469       lc = strlen(context);
00470       lcid = strlen(cid);
00471       len = strlen(a->word);
00472       if (le == 0 || lc == 0)
00473          goto error3;
00474 
00475       if (ast_rdlock_contexts()) {
00476          ast_log(LOG_ERROR, "Failed to lock context list\n");
00477          goto error3;
00478       }
00479 
00480       /* walk contexts */
00481       c = NULL;
00482       while ( (c = ast_walk_contexts(c)) ) {
00483          /* XXX locking on c ? */
00484          struct ast_exten *e;
00485          if (strcmp(ast_get_context_name(c), context) != 0)
00486             continue;
00487          /* got it, we must match here */
00488          e = NULL;
00489          while ( (e = ast_walk_context_extensions(c, e)) ) {
00490             struct ast_exten *priority;
00491             char buffer[10];
00492 
00493             if (cid && strcmp(ast_get_extension_cidmatch(e), cid) != 0) {
00494                continue;
00495             }
00496             if (strcmp(ast_get_extension_name(e), exten) != 0)
00497                continue;
00498             /* XXX lock e ? */
00499             priority = NULL;
00500             while ( !ret && (priority = ast_walk_extension_priorities(e, priority)) ) {
00501                snprintf(buffer, sizeof(buffer), "%u", ast_get_extension_priority(priority));
00502                if (partial_match(buffer, a->word, len) && ++which > a->n) /* n-th match */
00503                   ret = strdup(buffer);
00504             }
00505             break;
00506          }
00507          break;
00508       }
00509       ast_unlock_contexts();
00510    error3:
00511       free(exten);
00512    }
00513    return ret; 
00514 }
00515 
00516 /*!
00517  * Include context ...
00518  */
00519 static char *handle_cli_dialplan_add_include(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
00520 {
00521    switch (cmd) {
00522    case CLI_INIT:
00523       e->command = "dialplan add include";
00524       e->usage =
00525          "Usage: dialplan add include <context> into <context>\n"
00526          "       Include a context in another context.\n";
00527       return NULL;
00528    case CLI_GENERATE:
00529       return complete_dialplan_add_include(a);
00530    }
00531 
00532    if (a->argc != 6) /* dialplan add include CTX in CTX */
00533       return CLI_SHOWUSAGE;
00534 
00535    /* fifth arg must be 'into' ... */
00536    if (strcmp(a->argv[4], "into"))
00537       return CLI_SHOWUSAGE;
00538 
00539    if (ast_context_add_include(a->argv[5], a->argv[3], registrar)) {
00540       switch (errno) {
00541       case ENOMEM:
00542          ast_cli(a->fd, "Out of memory for context addition\n");
00543          break;
00544 
00545       case EBUSY:
00546          ast_cli(a->fd, "Failed to lock context(s) list, please try again later\n");
00547          break;
00548 
00549       case EEXIST:
00550          ast_cli(a->fd, "Context '%s' already included in '%s' context\n",
00551             a->argv[3], a->argv[5]);
00552          break;
00553 
00554       case ENOENT:
00555       case EINVAL:
00556          ast_cli(a->fd, "There is no existence of context '%s'\n",
00557             errno == ENOENT ? a->argv[5] : a->argv[3]);
00558          break;
00559 
00560       default:
00561          ast_cli(a->fd, "Failed to include '%s' in '%s' context\n",
00562             a->argv[3], a->argv[5]);
00563          break;
00564       }
00565       return CLI_FAILURE;
00566    }
00567 
00568    /* show some info ... */
00569    ast_cli(a->fd, "Context '%s' included in '%s' context\n",
00570       a->argv[3], a->argv[5]);
00571 
00572    return CLI_SUCCESS;
00573 }
00574 
00575 static char *complete_dialplan_add_include(struct ast_cli_args *a)
00576 {
00577    struct ast_context *c;
00578    int which = 0;
00579    char *ret = NULL;
00580    int len = strlen(a->word);
00581 
00582    if (a->pos == 3) {      /* 'dialplan add include _X_' (context) ... */
00583       if (ast_rdlock_contexts()) {
00584          ast_log(LOG_ERROR, "Failed to lock context list\n");
00585          return NULL;
00586       }
00587       for (c = NULL; !ret && (c = ast_walk_contexts(c)); )
00588          if (partial_match(ast_get_context_name(c), a->word, len) && ++which > a->n)
00589             ret = strdup(ast_get_context_name(c));
00590       ast_unlock_contexts();
00591       return ret;
00592    } else if (a->pos == 4) { /* dialplan add include CTX _X_ */
00593       /* complete  as 'into' if context exists or we are unable to check */
00594       char *context, *dupline;
00595       const char *s = skip_words(a->line, 3); /* should not fail */
00596 
00597       if (a->n != 0) /* only once */
00598          return NULL;
00599 
00600       /* parse context from line ... */
00601       context = dupline = strdup(s);
00602       if (!context) {
00603          ast_log(LOG_ERROR, "Out of free memory\n");
00604          return strdup("into");
00605       }
00606       strsep(&dupline, " ");
00607 
00608       /* check for context existence ... */
00609       if (ast_rdlock_contexts()) {
00610          ast_log(LOG_ERROR, "Failed to lock context list\n");
00611          /* our fault, we can't check, so complete 'into' ... */
00612          ret = strdup("into");
00613       } else {
00614          struct ast_context *ctx;
00615          for (ctx = NULL; !ret && (ctx = ast_walk_contexts(ctx)); )
00616             if (!strcmp(context, ast_get_context_name(ctx)))
00617                ret = strdup("into"); /* found */
00618          ast_unlock_contexts();
00619       }
00620       free(context);
00621       return ret;
00622    } else if (a->pos == 5) { /* 'dialplan add include CTX into _X_' (dst context) */
00623       char *context, *dupline, *into;
00624       const char *s = skip_words(a->line, 3); /* should not fail */
00625       context = dupline = strdup(s);
00626       if (!dupline) {
00627          ast_log(LOG_ERROR, "Out of free memory\n");
00628          return NULL;
00629       }
00630       strsep(&dupline, " "); /* skip context */
00631       into = strsep(&dupline, " ");
00632       /* error if missing context or fifth word is not 'into' */
00633       if (!strlen(context) || strcmp(into, "into")) {
00634          ast_log(LOG_ERROR, "bad context %s or missing into %s\n",
00635             context, into);
00636          goto error3;
00637       }
00638 
00639       if (ast_rdlock_contexts()) {
00640          ast_log(LOG_ERROR, "Failed to lock context list\n");
00641          goto error3;
00642       }
00643 
00644       for (c = NULL; (c = ast_walk_contexts(c)); )
00645          if (!strcmp(context, ast_get_context_name(c)))
00646             break;
00647       if (c) { /* first context exists, go on... */
00648          /* go through all contexts ... */
00649          for (c = NULL; !ret && (c = ast_walk_contexts(c)); ) {
00650             if (!strcmp(context, ast_get_context_name(c)))
00651                continue; /* skip ourselves */
00652             if (partial_match(ast_get_context_name(c), a->word, len) &&
00653                   !lookup_ci(c, context) /* not included yet */ &&
00654                   ++which > a->n)
00655                ret = strdup(ast_get_context_name(c));
00656          }
00657       } else {
00658          ast_log(LOG_ERROR, "context %s not found\n", context);
00659       }
00660       ast_unlock_contexts();
00661    error3:
00662       free(context);
00663       return ret;
00664    }
00665 
00666    return NULL;
00667 }
00668 
00669 /*!
00670  * \brief 'save dialplan' CLI command implementation functions ...
00671  */
00672 static char *handle_cli_dialplan_save(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
00673 {
00674    char filename[256], overrideswitch[256] = "";
00675    struct ast_context *c;
00676    struct ast_config *cfg;
00677    struct ast_variable *v;
00678    int incomplete = 0; /* incomplete config write? */
00679    FILE *output;
00680    struct ast_flags config_flags = { 0 };
00681    const char *base, *slash, *file;
00682 
00683    switch (cmd) {
00684    case CLI_INIT:
00685       e->command = "dialplan save";
00686       e->usage =
00687          "Usage: dialplan save [/path/to/extension/file]\n"
00688          "       Save dialplan created by pbx_config module.\n"
00689          "\n"
00690          "Example: dialplan save                 (/etc/asterisk/extensions.conf)\n"
00691          "         dialplan save /home/markster  (/home/markster/extensions.conf)\n";
00692       return NULL;
00693    case CLI_GENERATE:
00694       return NULL;
00695    }
00696 
00697    if (! (static_config && !write_protect_config)) {
00698       ast_cli(a->fd,
00699          "I can't save dialplan now, see '%s' example file.\n",
00700          config);
00701       return CLI_FAILURE;
00702    }
00703 
00704    if (a->argc != 2 && a->argc != 3)
00705       return CLI_SHOWUSAGE;
00706 
00707    if (ast_mutex_lock(&save_dialplan_lock)) {
00708       ast_cli(a->fd,
00709          "Failed to lock dialplan saving (another proccess saving?)\n");
00710       return CLI_FAILURE;
00711    }
00712    /* XXX the code here is quite loose, a pathname with .conf in it
00713     * is assumed to be a complete pathname
00714     */
00715    if (a->argc == 3) {  /* have config path. Look for *.conf */
00716       base = a->argv[2];
00717       if (!strstr(a->argv[2], ".conf")) { /*no, this is assumed to be a pathname */
00718          /* if filename ends with '/', do not add one */
00719          slash = (*(a->argv[2] + strlen(a->argv[2]) -1) == '/') ? "/" : "";
00720          file = config; /* default: 'extensions.conf' */
00721       } else { /* yes, complete file name */
00722          slash = "";
00723          file = "";
00724       }
00725    } else {
00726       /* no config file, default one */
00727       base = ast_config_AST_CONFIG_DIR;
00728       slash = "/";
00729       file = config;
00730    }
00731    snprintf(filename, sizeof(filename), "%s%s%s", base, slash, config);
00732 
00733    cfg = ast_config_load("extensions.conf", config_flags);
00734 
00735    /* try to lock contexts list */
00736    if (ast_rdlock_contexts()) {
00737       ast_cli(a->fd, "Failed to lock contexts list\n");
00738       ast_mutex_unlock(&save_dialplan_lock);
00739       ast_config_destroy(cfg);
00740       return CLI_FAILURE;
00741    }
00742 
00743    /* create new file ... */
00744    if (!(output = fopen(filename, "wt"))) {
00745       ast_cli(a->fd, "Failed to create file '%s'\n",
00746          filename);
00747       ast_unlock_contexts();
00748       ast_mutex_unlock(&save_dialplan_lock);
00749       ast_config_destroy(cfg);
00750       return CLI_FAILURE;
00751    }
00752 
00753    /* fireout general info */
00754    if (overrideswitch_config) {
00755       snprintf(overrideswitch, sizeof(overrideswitch), "overrideswitch=%s\n", overrideswitch_config);
00756    }
00757    fprintf(output, "[general]\nstatic=%s\nwriteprotect=%s\nautofallthrough=%s\nclearglobalvars=%s\n%sextenpatternmatchnew=%s\n\n",
00758       static_config ? "yes" : "no",
00759       write_protect_config ? "yes" : "no",
00760                 autofallthrough_config ? "yes" : "no",
00761             clearglobalvars_config ? "yes" : "no",
00762             overrideswitch_config ? overrideswitch : "",
00763             extenpatternmatchnew_config ? "yes" : "no");
00764 
00765    if ((v = ast_variable_browse(cfg, "globals"))) {
00766       fprintf(output, "[globals]\n");
00767       while(v) {
00768          fprintf(output, "%s => %s\n", v->name, v->value);
00769          v = v->next;
00770       }
00771       fprintf(output, "\n");
00772    }
00773 
00774    ast_config_destroy(cfg);
00775    
00776 #define PUT_CTX_HDR  do { \
00777    if (!context_header_written) {   \
00778       fprintf(output, "[%s]\n", ast_get_context_name(c));   \
00779       context_header_written = 1;   \
00780    }  \
00781    } while (0)
00782 
00783    /* walk all contexts */
00784    for (c = NULL; (c = ast_walk_contexts(c)); ) {
00785       int context_header_written = 0;
00786       struct ast_exten *ext, *last_written_e = NULL;
00787       struct ast_include *i;
00788       struct ast_ignorepat *ip;
00789       struct ast_sw *sw;
00790 
00791       /* try to lock context and fireout all info */  
00792       if (ast_rdlock_context(c)) { /* lock failure */
00793          incomplete = 1;
00794          continue;
00795       }
00796       /* registered by this module? */
00797       /* XXX do we need this ? */
00798       if (!strcmp(ast_get_context_registrar(c), registrar)) {
00799          fprintf(output, "[%s]\n", ast_get_context_name(c));
00800          context_header_written = 1;
00801       }
00802 
00803       /* walk extensions ... */
00804       for (ext = NULL; (ext = ast_walk_context_extensions(c, ext)); ) {
00805          struct ast_exten *p = NULL;
00806 
00807          /* fireout priorities */
00808          while ( (p = ast_walk_extension_priorities(ext, p)) ) {
00809             if (strcmp(ast_get_extension_registrar(p), registrar) != 0) /* not this source */
00810                continue;
00811       
00812             /* make empty line between different extensions */ 
00813             if (last_written_e != NULL &&
00814                    strcmp(ast_get_extension_name(last_written_e),
00815                       ast_get_extension_name(p)))
00816                fprintf(output, "\n");
00817             last_written_e = p;
00818          
00819             PUT_CTX_HDR;
00820 
00821             if (ast_get_extension_priority(p) == PRIORITY_HINT) { /* easy */
00822                fprintf(output, "exten => %s,hint,%s\n",
00823                       ast_get_extension_name(p),
00824                       ast_get_extension_app(p));
00825             } else {
00826                const char *sep, *cid;
00827                const char *el = ast_get_extension_label(p);
00828                char label[128] = "";
00829  
00830                if (ast_get_extension_matchcid(p)) {
00831                   sep = "/";
00832                   cid = ast_get_extension_cidmatch(p);
00833                } else
00834                   sep = cid = "";
00835             
00836                if (el && (snprintf(label, sizeof(label), "(%s)", el) != (strlen(el) + 2)))
00837                   incomplete = 1;   /* error encountered or label > 125 chars */
00838                
00839                fprintf(output, "exten => %s%s%s,%d%s,%s(%s)\n",
00840                    ast_get_extension_name(p), (ast_strlen_zero(sep) ? "" : sep), (ast_strlen_zero(cid) ? "" : cid),
00841                    ast_get_extension_priority(p), label,
00842                    ast_get_extension_app(p), (ast_strlen_zero(ast_get_extension_app_data(p)) ? "" : (const char *)ast_get_extension_app_data(p)));
00843             }
00844          }
00845       }
00846 
00847       /* written any extensions? ok, write space between exten & inc */
00848       if (last_written_e)
00849          fprintf(output, "\n");
00850 
00851       /* walk through includes */
00852       for (i = NULL; (i = ast_walk_context_includes(c, i)) ; ) {
00853          if (strcmp(ast_get_include_registrar(i), registrar) != 0)
00854             continue; /* not mine */
00855          PUT_CTX_HDR;
00856          fprintf(output, "include => %s\n", ast_get_include_name(i));
00857       }
00858       if (ast_walk_context_includes(c, NULL))
00859          fprintf(output, "\n");
00860 
00861       /* walk through switches */
00862       for (sw = NULL; (sw = ast_walk_context_switches(c, sw)) ; ) {
00863          if (strcmp(ast_get_switch_registrar(sw), registrar) != 0)
00864             continue; /* not mine */
00865          PUT_CTX_HDR;
00866          fprintf(output, "switch => %s/%s\n",
00867                 ast_get_switch_name(sw), ast_get_switch_data(sw));
00868       }
00869 
00870       if (ast_walk_context_switches(c, NULL))
00871          fprintf(output, "\n");
00872 
00873       /* fireout ignorepats ... */
00874       for (ip = NULL; (ip = ast_walk_context_ignorepats(c, ip)); ) {
00875          if (strcmp(ast_get_ignorepat_registrar(ip), registrar) != 0)
00876             continue; /* not mine */
00877          PUT_CTX_HDR;
00878          fprintf(output, "ignorepat => %s\n",
00879                   ast_get_ignorepat_name(ip));
00880       }
00881 
00882       ast_unlock_context(c);
00883    }  
00884 
00885    ast_unlock_contexts();
00886    ast_mutex_unlock(&save_dialplan_lock);
00887    fclose(output);
00888 
00889    if (incomplete) {
00890       ast_cli(a->fd, "Saved dialplan is incomplete\n");
00891       return CLI_FAILURE;
00892    }
00893 
00894    ast_cli(a->fd, "Dialplan successfully saved into '%s'\n",
00895       filename);
00896    return CLI_SUCCESS;
00897 }
00898 
00899 /*!
00900  * \brief ADD EXTENSION command stuff
00901  */
00902 static char *handle_cli_dialplan_add_extension(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
00903 {
00904    char *whole_exten;
00905    char *exten, *prior;
00906    int iprior = -2;
00907    char *cidmatch, *app, *app_data;
00908    char *start, *end;
00909 
00910    switch (cmd) {
00911    case CLI_INIT:
00912       e->command = "dialplan add extension";
00913       e->usage =
00914          "Usage: dialplan add extension <exten>,<priority>,<app>,<app-data>\n"
00915          "       into <context> [replace]\n\n"
00916          "       This command will add new extension into <context>. If there is an\n"
00917          "       existence of extension with the same priority and last 'replace'\n"
00918          "       arguments is given here we simply replace this extension.\n"
00919          "\n"
00920          "Example: dialplan add extension 6123,1,Dial,IAX/216.207.245.56/6123 into local\n"
00921          "         Now, you can dial 6123 and talk to Markster :)\n";
00922       return NULL;
00923    case CLI_GENERATE:
00924       return complete_dialplan_add_extension(a);
00925    }
00926 
00927    /* check for arguments at first */
00928    if (a->argc != 6 && a->argc != 7)
00929       return CLI_SHOWUSAGE;
00930    if (strcmp(a->argv[4], "into"))
00931       return CLI_SHOWUSAGE;
00932    if (a->argc == 7)
00933       if (strcmp(a->argv[6], "replace"))
00934          return CLI_SHOWUSAGE;
00935 
00936    /* XXX overwrite argv[3] */
00937    whole_exten = a->argv[3];
00938    exten = strsep(&whole_exten,",");
00939    if (strchr(exten, '/')) {
00940       cidmatch = exten;
00941       strsep(&cidmatch,"/");
00942    } else {
00943       cidmatch = NULL;
00944    }
00945    prior = strsep(&whole_exten,",");
00946    if (prior) {
00947       if (!strcmp(prior, "hint")) {
00948          iprior = PRIORITY_HINT;
00949       } else {
00950          if (sscanf(prior, "%30d", &iprior) != 1) {
00951             ast_cli(a->fd, "'%s' is not a valid priority\n", prior);
00952             prior = NULL;
00953          }
00954       }
00955    }
00956    app = whole_exten;
00957    if (app && (start = strchr(app, '(')) && (end = strrchr(app, ')'))) {
00958       *start = *end = '\0';
00959       app_data = start + 1;
00960    } else {
00961       if (app) {
00962          app_data = strchr(app, ',');
00963          if (app_data) {
00964             *app_data = '\0';
00965             app_data++;
00966          }
00967       } else   
00968          app_data = NULL;
00969    }
00970 
00971    if (!exten || !prior || !app || (!app_data && iprior != PRIORITY_HINT))
00972       return CLI_SHOWUSAGE;
00973 
00974    if (!app_data)
00975       app_data="";
00976    if (ast_add_extension(a->argv[5], a->argc == 7 ? 1 : 0, exten, iprior, NULL, cidmatch, app,
00977       (void *)strdup(app_data), ast_free_ptr, registrar)) {
00978       switch (errno) {
00979       case ENOMEM:
00980          ast_cli(a->fd, "Out of free memory\n");
00981          break;
00982 
00983       case EBUSY:
00984          ast_cli(a->fd, "Failed to lock context(s) list, please try again later\n");
00985          break;
00986 
00987       case ENOENT:
00988          ast_cli(a->fd, "No existence of '%s' context\n", a->argv[5]);
00989          break;
00990 
00991       case EEXIST:
00992          ast_cli(a->fd, "Extension %s@%s with priority %s already exists\n",
00993             exten, a->argv[5], prior);
00994          break;
00995 
00996       default:
00997          ast_cli(a->fd, "Failed to add '%s,%s,%s,%s' extension into '%s' context\n",
00998                exten, prior, app, app_data, a->argv[5]);
00999          break;
01000       }
01001       return CLI_FAILURE;
01002    }
01003 
01004    if (a->argc == 7)
01005       ast_cli(a->fd, "Extension %s@%s (%s) replace by '%s,%s,%s,%s'\n",
01006          exten, a->argv[5], prior, exten, prior, app, app_data);
01007    else
01008       ast_cli(a->fd, "Extension '%s,%s,%s,%s' added into '%s' context\n",
01009          exten, prior, app, app_data, a->argv[5]);
01010 
01011    return CLI_SUCCESS;
01012 }
01013 
01014 /*! dialplan add extension 6123,1,Dial,IAX/212.71.138.13/6123 into local */
01015 static char *complete_dialplan_add_extension(struct ast_cli_args *a)
01016 {
01017    int which = 0;
01018 
01019    if (a->pos == 4) {      /* complete 'into' word ... */
01020       return (a->n == 0) ? strdup("into") : NULL;
01021    } else if (a->pos == 5) { /* complete context */
01022       struct ast_context *c = NULL;
01023       int len = strlen(a->word);
01024       char *res = NULL;
01025 
01026       /* try to lock contexts list ... */
01027       if (ast_rdlock_contexts()) {
01028          ast_log(LOG_WARNING, "Failed to lock contexts list\n");
01029          return NULL;
01030       }
01031 
01032       /* walk through all contexts */
01033       while ( !res && (c = ast_walk_contexts(c)) )
01034          if (partial_match(ast_get_context_name(c), a->word, len) && ++which > a->n)
01035             res = strdup(ast_get_context_name(c));
01036       ast_unlock_contexts();
01037       return res;
01038    } else if (a->pos == 6) {
01039       return a->n == 0 ? strdup("replace") : NULL;
01040    }
01041    return NULL;
01042 }
01043 
01044 /*!
01045  * IGNOREPAT CLI stuff
01046  */
01047 static char *handle_cli_dialplan_add_ignorepat(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01048 {
01049    switch (cmd) {
01050    case CLI_INIT:
01051       e->command = "dialplan add ignorepat";
01052       e->usage =
01053          "Usage: dialplan add ignorepat <pattern> into <context>\n"
01054          "       This command adds a new ignore pattern into context <context>\n"
01055          "\n"
01056          "Example: dialplan add ignorepat _3XX into local\n";
01057       return NULL;
01058    case CLI_GENERATE:
01059       return complete_dialplan_add_ignorepat(a);
01060    }
01061 
01062    if (a->argc != 6)
01063       return CLI_SHOWUSAGE;
01064 
01065    if (strcmp(a->argv[4], "into"))
01066       return CLI_SHOWUSAGE;
01067 
01068    if (ast_context_add_ignorepat(a->argv[5], a->argv[3], registrar)) {
01069       switch (errno) {
01070       case ENOMEM:
01071          ast_cli(a->fd, "Out of free memory\n");
01072          break;
01073 
01074       case ENOENT:
01075          ast_cli(a->fd, "There is no existence of '%s' context\n", a->argv[5]);
01076          break;
01077 
01078       case EEXIST:
01079          ast_cli(a->fd, "Ignore pattern '%s' already included in '%s' context\n",
01080             a->argv[3], a->argv[5]);
01081          break;
01082 
01083       case EBUSY:
01084          ast_cli(a->fd, "Failed to lock context(s) list, please, try again later\n");
01085          break;
01086 
01087       default:
01088          ast_cli(a->fd, "Failed to add ingore pattern '%s' into '%s' context\n",
01089             a->argv[3], a->argv[5]);
01090          break;
01091       }
01092       return CLI_FAILURE;
01093    }
01094 
01095    ast_cli(a->fd, "Ignore pattern '%s' added into '%s' context\n",
01096       a->argv[3], a->argv[5]);
01097 
01098    return CLI_SUCCESS;
01099 }
01100 
01101 static char *complete_dialplan_add_ignorepat(struct ast_cli_args *a)
01102 {
01103    if (a->pos == 4)
01104       return a->n == 0 ? strdup("into") : NULL;
01105    else if (a->pos == 5) {
01106       struct ast_context *c;
01107       int which = 0;
01108       char *dupline, *ignorepat = NULL;
01109       const char *s;
01110       char *ret = NULL;
01111       int len = strlen(a->word);
01112 
01113       /* XXX skip first three words 'dialplan' 'add' 'ignorepat' */
01114       s = skip_words(a->line, 3);
01115       if (s == NULL)
01116          return NULL;
01117       dupline = strdup(s);
01118       if (!dupline) {
01119          ast_log(LOG_ERROR, "Malloc failure\n");
01120          return NULL;
01121       }
01122       ignorepat = strsep(&dupline, " ");
01123 
01124       if (ast_rdlock_contexts()) {
01125          ast_log(LOG_ERROR, "Failed to lock contexts list\n");
01126          return NULL;
01127       }
01128 
01129       for (c = NULL; !ret && (c = ast_walk_contexts(c));) {
01130          int found = 0;
01131 
01132          if (!partial_match(ast_get_context_name(c), a->word, len))
01133             continue; /* not mine */
01134          if (ignorepat) /* there must be one, right ? */
01135             found = lookup_c_ip(c, ignorepat);
01136          if (!found && ++which > a->n)
01137             ret = strdup(ast_get_context_name(c));
01138       }
01139 
01140       free(ignorepat);
01141       ast_unlock_contexts();
01142       return ret;
01143    }
01144 
01145    return NULL;
01146 }
01147 
01148 static char *handle_cli_dialplan_remove_ignorepat(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01149 {
01150    switch (cmd) {
01151    case CLI_INIT:
01152       e->command = "dialplan remove ignorepat";
01153       e->usage =
01154          "Usage: dialplan remove ignorepat <pattern> from <context>\n"
01155          "       This command removes an ignore pattern from context <context>\n"
01156          "\n"
01157          "Example: dialplan remove ignorepat _3XX from local\n";
01158       return NULL;
01159    case CLI_GENERATE:
01160       return complete_dialplan_remove_ignorepat(a);
01161    }
01162 
01163    if (a->argc != 6)
01164       return CLI_SHOWUSAGE;
01165 
01166    if (strcmp(a->argv[4], "from"))
01167       return CLI_SHOWUSAGE;
01168 
01169    if (ast_context_remove_ignorepat(a->argv[5], a->argv[3], registrar)) {
01170       switch (errno) {
01171       case EBUSY:
01172          ast_cli(a->fd, "Failed to lock context(s) list, please try again later\n");
01173          break;
01174 
01175       case ENOENT:
01176          ast_cli(a->fd, "There is no existence of '%s' context\n", a->argv[5]);
01177          break;
01178 
01179       case EINVAL:
01180          ast_cli(a->fd, "There is no existence of '%s' ignore pattern in '%s' context\n",
01181                a->argv[3], a->argv[5]);
01182          break;
01183 
01184       default:
01185          ast_cli(a->fd, "Failed to remove ignore pattern '%s' from '%s' context\n",
01186                a->argv[3], a->argv[5]);
01187          break;
01188       }
01189       return CLI_FAILURE;
01190    }
01191 
01192    ast_cli(a->fd, "Ignore pattern '%s' removed from '%s' context\n",
01193       a->argv[3], a->argv[5]);
01194    return CLI_SUCCESS;
01195 }
01196 
01197 static char *complete_dialplan_remove_ignorepat(struct ast_cli_args *a)
01198 {
01199    struct ast_context *c;
01200    int which = 0;
01201    char *ret = NULL;
01202 
01203    if (a->pos == 3) {
01204       int len = strlen(a->word);
01205       if (ast_rdlock_contexts()) {
01206          ast_log(LOG_WARNING, "Failed to lock contexts list\n");
01207          return NULL;
01208       }
01209 
01210       for (c = NULL; !ret && (c = ast_walk_contexts(c));) {
01211          struct ast_ignorepat *ip;
01212 
01213          if (ast_rdlock_context(c)) /* error, skip it */
01214             continue;
01215          
01216          for (ip = NULL; !ret && (ip = ast_walk_context_ignorepats(c, ip));) {
01217             if (partial_match(ast_get_ignorepat_name(ip), a->word, len) && ++which > a->n) {
01218                /* n-th match */
01219                struct ast_context *cw = NULL;
01220                int found = 0;
01221                while ( (cw = ast_walk_contexts(cw)) && cw != c && !found) {
01222                   /* XXX do i stop on c, or skip it ? */
01223                   found = lookup_c_ip(cw, ast_get_ignorepat_name(ip));
01224                }
01225                if (!found)
01226                   ret = strdup(ast_get_ignorepat_name(ip));
01227             }
01228          }
01229          ast_unlock_context(c);
01230       }
01231       ast_unlock_contexts();
01232       return ret;
01233    } else if (a->pos == 4) {
01234        return a->n == 0 ? strdup("from") : NULL;
01235    } else if (a->pos == 5) { /* XXX check this */
01236       char *dupline, *duplinet, *ignorepat;
01237       int len = strlen(a->word);
01238 
01239       dupline = strdup(a->line);
01240       if (!dupline) {
01241          ast_log(LOG_WARNING, "Out of free memory\n");
01242          return NULL;
01243       }
01244 
01245       duplinet = dupline;
01246       strsep(&duplinet, " ");
01247       strsep(&duplinet, " ");
01248       ignorepat = strsep(&duplinet, " ");
01249 
01250       if (!ignorepat) {
01251          free(dupline);
01252          return NULL;
01253       }
01254 
01255       if (ast_rdlock_contexts()) {
01256          ast_log(LOG_WARNING, "Failed to lock contexts list\n");
01257          free(dupline);
01258          return NULL;
01259       }
01260 
01261       for (c = NULL; !ret && (c = ast_walk_contexts(c)); ) {
01262          if (ast_rdlock_context(c)) /* fail, skip it */
01263             continue;
01264          if (!partial_match(ast_get_context_name(c), a->word, len))
01265             continue;
01266          if (lookup_c_ip(c, ignorepat) && ++which > a->n)
01267             ret = strdup(ast_get_context_name(c));
01268          ast_unlock_context(c);
01269       }
01270       ast_unlock_contexts();
01271       free(dupline);
01272       return NULL;
01273    }
01274 
01275    return NULL;
01276 }
01277 
01278 static int pbx_load_module(void);
01279 
01280 static char *handle_cli_dialplan_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01281 {
01282    switch (cmd) {
01283    case CLI_INIT:
01284       e->command = "dialplan reload";
01285       e->usage =
01286          "Usage: dialplan reload\n"
01287          "       Reload extensions.conf without reloading any other\n"
01288          "       modules.  This command does not delete global variables\n"
01289          "       unless clearglobalvars is set to yes in extensions.conf\n";
01290       return NULL;
01291    case CLI_GENERATE:
01292       return NULL;
01293    }
01294 
01295    if (a->argc != 2)
01296       return CLI_SHOWUSAGE;
01297 
01298    if (clearglobalvars_config)
01299       pbx_builtin_clear_globals();
01300 
01301    pbx_load_module();
01302    ast_cli(a->fd, "Dialplan reloaded.\n");
01303    return CLI_SUCCESS;
01304 }
01305 
01306 /*!
01307  * CLI entries for commands provided by this module
01308  */
01309 static struct ast_cli_entry cli_pbx_config[] = {
01310    AST_CLI_DEFINE(handle_cli_dialplan_add_extension,    "Add new extension into context"),
01311    AST_CLI_DEFINE(handle_cli_dialplan_remove_extension, "Remove a specified extension"),
01312    AST_CLI_DEFINE(handle_cli_dialplan_add_ignorepat,    "Add new ignore pattern"),
01313    AST_CLI_DEFINE(handle_cli_dialplan_remove_ignorepat, "Remove ignore pattern from context"),
01314    AST_CLI_DEFINE(handle_cli_dialplan_add_include,      "Include context in other context"),
01315    AST_CLI_DEFINE(handle_cli_dialplan_remove_include,   "Remove a specified include from context"),
01316    AST_CLI_DEFINE(handle_cli_dialplan_reload,           "Reload extensions and *only* extensions")
01317 };
01318 
01319 static struct ast_cli_entry cli_dialplan_save =
01320    AST_CLI_DEFINE(handle_cli_dialplan_save, "Save dialplan");
01321 
01322 /*!
01323  * Standard module functions ...
01324  */
01325 static int unload_module(void)
01326 {
01327    if (static_config && !write_protect_config)
01328       ast_cli_unregister(&cli_dialplan_save);
01329    if (overrideswitch_config) {
01330       ast_free(overrideswitch_config);
01331    }
01332    ast_cli_unregister_multiple(cli_pbx_config, sizeof(cli_pbx_config) / sizeof(struct ast_cli_entry));
01333    ast_context_destroy(NULL, registrar);
01334    return 0;
01335 }
01336 
01337 static int pbx_load_config(const char *config_file)
01338 {
01339    struct ast_config *cfg;
01340    char *end;
01341    char *label;
01342 #ifdef LOW_MEMORY
01343    char realvalue[256];
01344 #else
01345    char realvalue[8192];
01346 #endif
01347    int lastpri = -2;
01348    struct ast_context *con;
01349    struct ast_variable *v;
01350    const char *cxt;
01351    const char *aft;
01352    const char *newpm, *ovsw;
01353    struct ast_flags config_flags = { 0 };
01354    cfg = ast_config_load(config_file, config_flags);
01355    if (!cfg)
01356       return 0;
01357 
01358    /* Use existing config to populate the PBX table */
01359    static_config = ast_true(ast_variable_retrieve(cfg, "general", "static"));
01360    write_protect_config = ast_true(ast_variable_retrieve(cfg, "general", "writeprotect"));
01361    if ((aft = ast_variable_retrieve(cfg, "general", "autofallthrough")))
01362       autofallthrough_config = ast_true(aft);
01363    if ((newpm = ast_variable_retrieve(cfg, "general", "extenpatternmatchnew")))
01364       extenpatternmatchnew_config = ast_true(newpm);
01365    clearglobalvars_config = ast_true(ast_variable_retrieve(cfg, "general", "clearglobalvars"));
01366    if ((ovsw = ast_variable_retrieve(cfg, "general", "overrideswitch"))) {
01367       if (overrideswitch_config) {
01368          ast_free(overrideswitch_config);
01369       }
01370       if (!ast_strlen_zero(ovsw)) {
01371          overrideswitch_config = ast_strdup(ovsw);
01372       } else {
01373          overrideswitch_config = NULL;
01374       }
01375    }
01376 
01377    if ((cxt = ast_variable_retrieve(cfg, "general", "userscontext"))) 
01378       ast_copy_string(userscontext, cxt, sizeof(userscontext));
01379    else
01380       ast_copy_string(userscontext, "default", sizeof(userscontext));
01381                             
01382    for (v = ast_variable_browse(cfg, "globals"); v; v = v->next) {
01383       pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
01384       pbx_builtin_setvar_helper(NULL, v->name, realvalue);
01385    }
01386    for (cxt = NULL; (cxt = ast_category_browse(cfg, cxt)); ) {
01387       /* All categories but "general" or "globals" are considered contexts */
01388       if (!strcasecmp(cxt, "general") || !strcasecmp(cxt, "globals"))
01389          continue;
01390       con=ast_context_find_or_create(&local_contexts, local_table, cxt, registrar);
01391       if (con == NULL)
01392          continue;
01393 
01394       for (v = ast_variable_browse(cfg, cxt); v; v = v->next) {
01395          if (!strcasecmp(v->name, "exten")) {
01396             char *tc = ast_strdup(v->value);
01397             if (tc) {
01398                int ipri = -2;
01399                char realext[256]="";
01400                char *plus, *firstp;
01401                char *pri, *appl, *data, *cidmatch;
01402                char *stringp = tc;
01403                char *ext = strsep(&stringp, ",");
01404                if (!ext)
01405                   ext="";
01406                pbx_substitute_variables_helper(NULL, ext, realext, sizeof(realext) - 1);
01407                cidmatch = strchr(realext, '/');
01408                if (cidmatch) {
01409                   *cidmatch++ = '\0';
01410                   ast_shrink_phone_number(cidmatch);
01411                }
01412                pri = strsep(&stringp, ",");
01413                if (!pri)
01414                   pri="";
01415                pri = ast_skip_blanks(pri);
01416                pri = ast_trim_blanks(pri);
01417                label = strchr(pri, '(');
01418                if (label) {
01419                   *label++ = '\0';
01420                   end = strchr(label, ')');
01421                   if (end)
01422                      *end = '\0';
01423                   else
01424                      ast_log(LOG_WARNING, "Label missing trailing ')' at line %d\n", v->lineno);
01425                }
01426                plus = strchr(pri, '+');
01427                if (plus)
01428                   *plus++ = '\0';
01429                if (!strcmp(pri,"hint"))
01430                   ipri=PRIORITY_HINT;
01431                else if (!strcmp(pri, "next") || !strcmp(pri, "n")) {
01432                   if (lastpri > -2)
01433                      ipri = lastpri + 1;
01434                   else
01435                      ast_log(LOG_WARNING, "Can't use 'next' priority on the first entry!\n");
01436                } else if (!strcmp(pri, "same") || !strcmp(pri, "s")) {
01437                   if (lastpri > -2)
01438                      ipri = lastpri;
01439                   else
01440                      ast_log(LOG_WARNING, "Can't use 'same' priority on the first entry!\n");
01441                } else if (sscanf(pri, "%30d", &ipri) != 1 &&
01442                    (ipri = ast_findlabel_extension2(NULL, con, realext, pri, cidmatch)) < 1) {
01443                   ast_log(LOG_WARNING, "Invalid priority/label '%s' at line %d\n", pri, v->lineno);
01444                   ipri = 0;
01445                }
01446                appl = S_OR(stringp, "");
01447                /* Find the first occurrence of '(' */
01448                firstp = strchr(appl, '(');
01449                if (!firstp) {
01450                   /* No arguments */
01451                   data = "";
01452                } else {
01453                   char *orig_appl = ast_strdup(appl);
01454 
01455                   if (!orig_appl)
01456                      return -1;
01457 
01458                   appl = strsep(&stringp, "(");
01459 
01460                   /* check if there are variables or expressions without an application, like: exten => 100,hint,DAHDI/g0/${GLOBAL(var)}  */
01461                   if (strstr(appl, "${") || strstr(appl, "$[")){
01462                      /* set appl to original one */
01463                      strcpy(appl, orig_appl);
01464                      /* set no data */
01465                      data = "";
01466                   /* no variable before application found -> go ahead */
01467                   } else {
01468                      data = S_OR(stringp, "");
01469                      if ((end = strrchr(data, ')'))) {
01470                         *end = '\0';
01471                      } else {
01472                         ast_log(LOG_WARNING, "No closing parenthesis found? '%s(%s' at line %d\n", appl, data, v->lineno);
01473                      }
01474                   }
01475                   ast_free(orig_appl);
01476                }
01477 
01478                if (!data)
01479                   data = "";
01480                appl = ast_skip_blanks(appl);
01481                if (ipri) {
01482                   if (plus)
01483                      ipri += atoi(plus);
01484                   lastpri = ipri;
01485                   if (!ast_opt_dont_warn && !strcmp(realext, "_."))
01486                      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);
01487                   if (ast_add_extension2(con, 0, realext, ipri, label, cidmatch, appl, strdup(data), ast_free_ptr, registrar)) {
01488                      ast_log(LOG_WARNING, "Unable to register extension at line %d\n", v->lineno);
01489                   }
01490                }
01491                free(tc);
01492             }
01493          } else if (!strcasecmp(v->name, "include")) {
01494             pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
01495             if (ast_context_add_include2(con, realvalue, registrar))
01496                ast_log(LOG_WARNING, "Unable to include context '%s' in context '%s' at line %d\n", v->value, cxt, v->lineno);
01497          } else if (!strcasecmp(v->name, "ignorepat")) {
01498             pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
01499             if (ast_context_add_ignorepat2(con, realvalue, registrar))
01500                ast_log(LOG_WARNING, "Unable to include ignorepat '%s' in context '%s' at line %d\n", v->value, cxt, v->lineno);
01501          } else if (!strcasecmp(v->name, "switch") || !strcasecmp(v->name, "lswitch") || !strcasecmp(v->name, "eswitch")) {
01502             char *stringp = realvalue;
01503             char *appl, *data;
01504             
01505             if (!strcasecmp(v->name, "switch"))
01506                pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
01507             else
01508                ast_copy_string(realvalue, v->value, sizeof(realvalue));
01509             appl = strsep(&stringp, "/");
01510             data = S_OR(stringp, "");
01511             if (ast_context_add_switch2(con, appl, data, !strcasecmp(v->name, "eswitch"), registrar))
01512                ast_log(LOG_WARNING, "Unable to include switch '%s' in context '%s' at line %d\n", v->value, cxt, v->lineno);
01513          } else {
01514             ast_log(LOG_WARNING, "==!!== Unknown directive: %s at line %d -- IGNORING!!!\n", v->name, v->lineno);
01515          }
01516       }
01517    }
01518    ast_config_destroy(cfg);
01519    return 1;
01520 }
01521 
01522 static void append_interface(char *iface, int maxlen, char *add)
01523 {
01524    int len = strlen(iface);
01525    if (strlen(add) + len < maxlen - 2) {
01526       if (strlen(iface)) {
01527          iface[len] = '&';
01528          strcpy(iface + len + 1, add);
01529       } else
01530          strcpy(iface, add);
01531    }
01532 }
01533 
01534 static void pbx_load_users(void)
01535 {
01536    struct ast_config *cfg;
01537    char *cat, *chan;
01538    const char *dahdichan;
01539    const char *hasexten, *altexts;
01540    char tmp[256];
01541    char iface[256];
01542    char dahdicopy[256];
01543    char *ext, altcopy[256];
01544    char *c;
01545    int len;
01546    int hasvoicemail;
01547    int start, finish, x;
01548    struct ast_context *con = NULL;
01549    struct ast_flags config_flags = { 0 };
01550    
01551    cfg = ast_config_load("users.conf", config_flags);
01552    if (!cfg)
01553       return;
01554 
01555    for (cat = ast_category_browse(cfg, NULL); cat ; cat = ast_category_browse(cfg, cat)) {
01556       if (!strcasecmp(cat, "general"))
01557          continue;
01558       iface[0] = '\0';
01559       len = sizeof(iface);
01560       if (ast_true(ast_config_option(cfg, cat, "hassip"))) {
01561          snprintf(tmp, sizeof(tmp), "SIP/%s", cat);
01562          append_interface(iface, sizeof(iface), tmp);
01563       }
01564       if (ast_true(ast_config_option(cfg, cat, "hasiax"))) {
01565          snprintf(tmp, sizeof(tmp), "IAX2/%s", cat);
01566          append_interface(iface, sizeof(iface), tmp);
01567       }
01568       if (ast_true(ast_config_option(cfg, cat, "hash323"))) {
01569          snprintf(tmp, sizeof(tmp), "H323/%s", cat);
01570          append_interface(iface, sizeof(iface), tmp);
01571       }
01572       hasexten = ast_config_option(cfg, cat, "hasexten");
01573       if (hasexten && !ast_true(hasexten))
01574          continue;
01575       hasvoicemail = ast_true(ast_config_option(cfg, cat, "hasvoicemail"));
01576       dahdichan = ast_variable_retrieve(cfg, cat, "dahdichan");
01577       if (!dahdichan)
01578          dahdichan = ast_variable_retrieve(cfg, "general", "dahdichan");
01579       if (!ast_strlen_zero(dahdichan)) {
01580          ast_copy_string(dahdicopy, dahdichan, sizeof(dahdicopy));
01581          c = dahdicopy;
01582          chan = strsep(&c, ",");
01583          while (chan) {
01584             if (sscanf(chan, "%30d-%30d", &start, &finish) == 2) {
01585                /* Range */
01586             } else if (sscanf(chan, "%30d", &start)) {
01587                /* Just one */
01588                finish = start;
01589             } else {
01590                start = 0; finish = 0;
01591             }
01592             if (finish < start) {
01593                x = finish;
01594                finish = start;
01595                start = x;
01596             }
01597             for (x = start; x <= finish; x++) {
01598                snprintf(tmp, sizeof(tmp), "DAHDI/%d", x);
01599                append_interface(iface, sizeof(iface), tmp);
01600             }
01601             chan = strsep(&c, ",");
01602          }
01603       }
01604       if (!ast_strlen_zero(iface)) {
01605          /* Only create a context here when it is really needed. Otherwise default empty context
01606          created by pbx_config may conflict with the one explicitly created by pbx_ael */
01607          if (!con)
01608             con = ast_context_find_or_create(&local_contexts, local_table, userscontext, registrar);
01609 
01610          if (!con) {
01611             ast_log(LOG_ERROR, "Can't find/create user context '%s'\n", userscontext);
01612             return;
01613          }
01614 
01615          /* Add hint */
01616          ast_add_extension2(con, 0, cat, -1, NULL, NULL, iface, NULL, NULL, registrar);
01617          /* If voicemail, use "stdexten" else use plain old dial */
01618          if (hasvoicemail) {
01619             snprintf(tmp, sizeof(tmp), "stdexten,%s,${HINT}", cat);
01620             ast_add_extension2(con, 0, cat, 1, NULL, NULL, "Macro", strdup(tmp), ast_free_ptr, registrar);
01621          } else {
01622             ast_add_extension2(con, 0, cat, 1, NULL, NULL, "Dial", strdup("${HINT}"), ast_free_ptr, registrar);
01623          }
01624          altexts = ast_variable_retrieve(cfg, cat, "alternateexts");
01625          if (!ast_strlen_zero(altexts)) {
01626             snprintf(tmp, sizeof(tmp), "%s,1", cat);
01627             ast_copy_string(altcopy, altexts, sizeof(altcopy));
01628             c = altcopy;
01629             ext = strsep(&c, ",");
01630             while (ext) {
01631                ast_add_extension2(con, 0, ext, 1, NULL, NULL, "Goto", strdup(tmp), ast_free_ptr, registrar);
01632                ext = strsep(&c, ",");
01633             }
01634          }
01635       }
01636    }
01637    ast_config_destroy(cfg);
01638 }
01639 
01640 static int pbx_load_module(void)
01641 {
01642    struct ast_context *con;
01643 
01644    if (!local_table)
01645       local_table = ast_hashtab_create(17, ast_hashtab_compare_contexts, ast_hashtab_resize_java, ast_hashtab_newsize_java, ast_hashtab_hash_contexts, 0);
01646 
01647    if (!pbx_load_config(config))
01648       return AST_MODULE_LOAD_DECLINE;
01649    
01650    pbx_load_users();
01651 
01652    ast_merge_contexts_and_delete(&local_contexts, local_table, registrar);
01653    local_table = NULL; /* the local table has been moved into the global one. */
01654    local_contexts = NULL;
01655 
01656    for (con = NULL; (con = ast_walk_contexts(con));)
01657       ast_context_verify_includes(con);
01658 
01659    pbx_set_overrideswitch(overrideswitch_config);
01660    pbx_set_autofallthrough(autofallthrough_config);
01661    pbx_set_extenpatternmatchnew(extenpatternmatchnew_config);
01662 
01663    return AST_MODULE_LOAD_SUCCESS;
01664 }
01665 
01666 static int load_module(void)
01667 {
01668    if (pbx_load_module())
01669       return AST_MODULE_LOAD_DECLINE;
01670  
01671    if (static_config && !write_protect_config)
01672       ast_cli_register(&cli_dialplan_save);
01673    ast_cli_register_multiple(cli_pbx_config, sizeof(cli_pbx_config) / sizeof(struct ast_cli_entry));
01674 
01675    return AST_MODULE_LOAD_SUCCESS;
01676 }
01677 
01678 static int reload(void)
01679 {
01680    if (clearglobalvars_config)
01681       pbx_builtin_clear_globals();
01682    return pbx_load_module();
01683 }
01684 
01685 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Text Extension Configuration",
01686       .load = load_module,
01687       .unload = unload_module,
01688       .reload = reload,
01689           );

Generated on Wed Aug 18 22:33:54 2010 for Asterisk - the Open Source PBX by  doxygen 1.4.7