Mon Mar 31 07:38:02 2008

Asterisk developer's documentation


func_callerid.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999-2006, Digium, Inc.
00005  *
00006  * See http://www.asterisk.org for more information about
00007  * the Asterisk project. Please do not directly contact
00008  * any of the maintainers of this project for assistance;
00009  * the project provides a web site, mailing lists and IRC
00010  * channels for your use.
00011  *
00012  * This program is free software, distributed under the terms of
00013  * the GNU General Public License Version 2. See the LICENSE file
00014  * at the top of the source tree.
00015  */
00016 
00017 /*! \file
00018  *
00019  * \brief Caller ID related dialplan functions
00020  * 
00021  * \ingroup functions
00022  */
00023 
00024 #include "asterisk.h"
00025 
00026 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
00027 
00028 #include <stdlib.h>
00029 #include <stdio.h>
00030 #include <string.h>
00031 #include <sys/types.h>
00032 
00033 #include "asterisk/module.h"
00034 #include "asterisk/channel.h"
00035 #include "asterisk/pbx.h"
00036 #include "asterisk/logger.h"
00037 #include "asterisk/utils.h"
00038 #include "asterisk/app.h"
00039 #include "asterisk/options.h"
00040 #include "asterisk/callerid.h"
00041 
00042 static int callerid_read(struct ast_channel *chan, char *cmd, char *data,
00043           char *buf, size_t len)
00044 {
00045    char *opt = data;
00046 
00047    if (!chan)
00048       return -1;
00049 
00050    if (strchr(opt, '|')) {
00051       char name[80], num[80];
00052 
00053       data = strsep(&opt, "|");
00054       ast_callerid_split(opt, name, sizeof(name), num, sizeof(num));
00055 
00056       if (!strncasecmp("all", data, 3)) {
00057          snprintf(buf, len, "\"%s\" <%s>", name, num);
00058       } else if (!strncasecmp("name", data, 4)) {
00059          ast_copy_string(buf, name, len);
00060       } else if (!strncasecmp("num", data, 3) ||
00061             !strncasecmp("number", data, 6)) {
00062 
00063          ast_copy_string(buf, num, len);
00064       } else {
00065          ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
00066       }
00067    } else {
00068       ast_channel_lock(chan);
00069 
00070       if (!strncasecmp("all", data, 3)) {
00071          snprintf(buf, len, "\"%s\" <%s>",
00072              S_OR(chan->cid.cid_name, ""),
00073              S_OR(chan->cid.cid_num, ""));
00074       } else if (!strncasecmp("name", data, 4)) {
00075          if (chan->cid.cid_name) {
00076             ast_copy_string(buf, chan->cid.cid_name, len);
00077          }
00078       } else if (!strncasecmp("num", data, 3)
00079                || !strncasecmp("number", data, 6)) {
00080          if (chan->cid.cid_num) {
00081             ast_copy_string(buf, chan->cid.cid_num, len);
00082          }
00083       } else if (!strncasecmp("ani", data, 3)) {
00084          if (chan->cid.cid_ani) {
00085             ast_copy_string(buf, chan->cid.cid_ani, len);
00086          }
00087       } else if (!strncasecmp("dnid", data, 4)) {
00088          if (chan->cid.cid_dnid) {
00089             ast_copy_string(buf, chan->cid.cid_dnid, len);
00090          }
00091       } else if (!strncasecmp("rdnis", data, 5)) {
00092          if (chan->cid.cid_rdnis) {
00093             ast_copy_string(buf, chan->cid.cid_rdnis, len);
00094          }
00095       } else {
00096          ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
00097       }
00098 
00099       ast_channel_unlock(chan);
00100    }
00101 
00102    return 0;
00103 }
00104 
00105 static int callerid_write(struct ast_channel *chan, char *cmd, char *data,
00106            const char *value)
00107 {
00108    if (!value || !chan)
00109       return -1;
00110 
00111    if (!strncasecmp("all", data, 3)) {
00112       char name[256];
00113       char num[256];
00114 
00115       if (!ast_callerid_split(value, name, sizeof(name), num, sizeof(num)))
00116          ast_set_callerid(chan, num, name, num);
00117    } else if (!strncasecmp("name", data, 4)) {
00118       ast_set_callerid(chan, NULL, value, NULL);
00119    } else if (!strncasecmp("num", data, 3) ||
00120          !strncasecmp("number", data, 6)) {
00121       ast_set_callerid(chan, value, NULL, NULL);
00122    } else if (!strncasecmp("ani", data, 3)) {
00123       ast_set_callerid(chan, NULL, NULL, value);
00124    } else if (!strncasecmp("dnid", data, 4)) {
00125       ast_channel_lock(chan);
00126       if (chan->cid.cid_dnid)
00127          free(chan->cid.cid_dnid);
00128       chan->cid.cid_dnid = ast_strdup(value);
00129       ast_channel_unlock(chan);
00130    } else if (!strncasecmp("rdnis", data, 5)) {
00131       ast_channel_lock(chan);
00132       if (chan->cid.cid_rdnis)
00133          free(chan->cid.cid_rdnis);
00134       chan->cid.cid_rdnis = ast_strdup(value);
00135       ast_channel_unlock(chan);
00136    } else {
00137       ast_log(LOG_ERROR, "Unknown callerid data type '%s'.\n", data);
00138    }
00139 
00140    return 0;
00141 }
00142 
00143 static struct ast_custom_function callerid_function = {
00144    .name = "CALLERID",
00145    .synopsis = "Gets or sets Caller*ID data on the channel.",
00146    .syntax = "CALLERID(datatype[,<optional-CID>])",
00147    .desc =
00148       "Gets or sets Caller*ID data on the channel.  The allowable datatypes\n"
00149       "are \"all\", \"name\", \"num\", \"ANI\", \"DNID\", \"RDNIS\".\n"
00150       "Uses channel callerid by default or optional callerid, if specified.\n",
00151    .read = callerid_read,
00152    .write = callerid_write,
00153 };
00154 
00155 static int unload_module(void)
00156 {
00157    return ast_custom_function_unregister(&callerid_function);
00158 }
00159 
00160 static int load_module(void)
00161 {
00162    return ast_custom_function_register(&callerid_function);
00163 }
00164 
00165 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Caller ID related dialplan function");

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