apps/app_enumlookup.c

   1 /*
   2  * Asterisk -- A telephony toolkit for Linux.
   3  *
   4  * Time of day - Report the time of day
   5  *
   6  * Copyright (C) 1999, Mark Spencer
   7  *
   8  * Mark Spencer <markster@linux-support.net>
   9  *
  10  * This program is free software, distributed under the terms of
  11  * the GNU General Public License
  12  */
  13
  14 #include <asterisk/lock.h>
  15 #include <asterisk/file.h>
  16 #include <asterisk/logger.h>
  17 #include <asterisk/channel.h>
  18 #include <asterisk/pbx.h>
  19 #include <asterisk/module.h>
  20 #include <asterisk/enum.h>
  21 #include <stdlib.h>
  22 #include <unistd.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25 #include <ctype.h>
  26
  27 #include <pthread.h>
  28
  29
  30 static char *tdesc = "ENUM Lookup";
  31
  32 static char *app = "EnumLookup";
  33
  34 static char *synopsis = "Lookup number in ENUM";
  35
  36 static char *descrip =
  37 "  EnumLookup(exten):  Looks up an extension via ENUM and sets\n"
  38 "the variable 'ENUM'.  Returns -1 on hangup, or 0 on completion\n"
  39 "regardless of whether the lookup was successful. Currently, the\n"
  40 "enumservices SIP and TEL are recognized. A good SIP entry\n"
  41 "will result in normal priority handling, whereas a good TEL entry\n"
  42 "will increase the priority by 51 (if existing)\n"
  43 "If the lookup was *not* successful and there exists a priority n + 101,\n"
  44 "then that priority will be taken next.\n" ;
  45
  46 STANDARD_LOCAL_USER;
  47
  48 LOCAL_USER_DECL;
  49
  50 static int enumlookup_exec(struct ast_channel *chan, void *data)
  51 {
  52         int res=0;
  53         char tech[80];
  54         char dest[80];
  55         char tmp[256];
  56         char *c,*t;
  57         struct localuser *u;
  58         if (!data || !strlen(data)) {
  59                 ast_log(LOG_WARNING, "EnumLookup requires an argument (extension)\n");
  60                 res = 1;
  61         }
  62         LOCAL_USER_ADD(u);
  63         if (!res) {
  64                 res = ast_get_enum(chan, data, dest, sizeof(dest), tech, sizeof(tech));
  65                 printf("ENUM got '%d'\n", res);
  66         }
  67         LOCAL_USER_REMOVE(u);
  68         /* Parse it out */
  69         if (res > 0) {
  70                 if (!strcasecmp(tech, "SIP")) {
  71                         c = dest;
  72                         if (!strncmp(c, "sip:", 4))
  73                                 c += 4;
  74                         snprintf(tmp, sizeof(tmp), "SIP/%s", c);
  75                         pbx_builtin_setvar_helper(chan, "ENUM", tmp);
  76                 } else if (!strcasecmp(tech, "H323")) {
  77                         c = dest;
  78                         if (!strncmp(c, "h323:", 5))
  79                                 c += 5;
  80                         snprintf(tmp, sizeof(tmp), "H323/%s", c);
  81                         pbx_builtin_setvar_helper(chan, "ENUM", tmp);
  82                 } else if (!strcasecmp(tech, "IAX")) {
  83                         c = dest;
  84                         if (!strncmp(c, "iax:", 4))
  85                                 c += 4;
  86                         snprintf(tmp, sizeof(tmp), "IAX/%s", c);
  87                         pbx_builtin_setvar_helper(chan, "ENUM", tmp);
  88                 } else if (!strcasecmp(tech, "IAX2")) {
  89                         c = dest;
  90                         if (!strncmp(c, "iax2:", 5))
  91                                 c += 5;
  92                         snprintf(tmp, sizeof(tmp), "IAX2/%s", c);
  93                         pbx_builtin_setvar_helper(chan, "ENUM", tmp);
  94                 } else if (!strcasecmp(tech, "tel")) {
  95                         c = dest;
  96                         if (!strncmp(c, "tel:", 4))
  97                                 c += 4;
  98
  99                         if (c[0] != '+') {
 100                                 ast_log(LOG_NOTICE, "tel: uri must start with a \"+\" (got '%s')\n", c);
 101                                 res = 0;
 102                         } else {
 103 /* now copy over the number, skipping all non-digits and stop at ; or NULL */
 104                                 t = tmp;
 105                                 while( *c && (*c != ';') && (t - tmp < (sizeof(tmp) - 1))) {
 106                                         if (isdigit(*c))
 107                                                 *t++ = *c;
 108                                         c++;
 109                                 }
 110                                 *t = 0;
 111                                 pbx_builtin_setvar_helper(chan, "ENUM", tmp);
 112                                 ast_log(LOG_NOTICE, "tel: ENUM set to \"%s\"\n", tmp);
 113                                 if (ast_exists_extension(chan, chan->context, chan->exten, chan->priority + 51, chan->callerid))
 114                                         chan->priority += 50;
 115                                 else
 116                                         res = 0;
 117                         }
 118                 } else if (strlen(tech)) {
 119                         ast_log(LOG_NOTICE, "Don't know how to handle technology '%s'\n", tech);
 120                         res = 0;
 121                 }
 122         }
 123         if (!res) {
 124                 /* Look for a "busy" place */
 125                 if (ast_exists_extension(chan, chan->context, chan->exten, chan->priority + 101, chan->callerid))
 126                         chan->priority += 100;
 127         } else if (res > 0)
 128                 res = 0;
 129         return res;
 130 }
 131
 132 int unload_module(void)
 133 {
 134         STANDARD_HANGUP_LOCALUSERS;
 135         return ast_unregister_application(app);
 136 }
 137
 138 int load_module(void)
 139 {
 140         return ast_register_application(app, enumlookup_exec, synopsis, descrip);
 141 }
 142
 143 char *description(void)
 144 {
 145         return tdesc;
 146 }
 147
 148 int usecount(void)
 149 {
 150         int res;
 151         STANDARD_USECOUNT(res);
 152         return res;
 153 }
 154
 155 char *key()
 156 {
 157         return ASTERISK_GPL_KEY;
 158 }