Wed Apr 6 11:29:41 2011

Asterisk developer's documentation


cdr_manager.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 2004 - 2005
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 /*!
00018  * \file
00019  * \brief Asterisk Call Manager CDR records.
00020  *
00021  * See also
00022  * \arg \ref AstCDR
00023  * \arg \ref AstAMI
00024  * \arg \ref Config_ami
00025  * \ingroup cdr_drivers
00026  */
00027 
00028 #include "asterisk.h"
00029 
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 278132 $")
00031 
00032 #include <time.h>
00033 
00034 #include "asterisk/channel.h"
00035 #include "asterisk/cdr.h"
00036 #include "asterisk/module.h"
00037 #include "asterisk/utils.h"
00038 #include "asterisk/manager.h"
00039 #include "asterisk/config.h"
00040 #include "asterisk/pbx.h"
00041 
00042 #define DATE_FORMAT  "%Y-%m-%d %T"
00043 #define CONF_FILE "cdr_manager.conf"
00044 #define CUSTOM_FIELDS_BUF_SIZE 1024
00045 
00046 static const char name[] = "cdr_manager";
00047 
00048 static int enablecdr = 0;
00049 
00050 static struct ast_str *customfields;
00051 AST_RWLOCK_DEFINE_STATIC(customfields_lock);
00052 
00053 static int manager_log(struct ast_cdr *cdr);
00054 
00055 static int load_config(int reload)
00056 {
00057    char *cat = NULL;
00058    struct ast_config *cfg;
00059    struct ast_variable *v;
00060    struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
00061    int newenablecdr = 0;
00062 
00063    cfg = ast_config_load(CONF_FILE, config_flags);
00064    if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
00065       return 0;
00066    }
00067 
00068    if (cfg == CONFIG_STATUS_FILEINVALID) {
00069       ast_log(LOG_ERROR, "Config file '%s' could not be parsed\n", CONF_FILE);
00070       return -1;
00071    }
00072 
00073    if (!cfg) {
00074       /* Standard configuration */
00075       ast_log(LOG_WARNING, "Failed to load configuration file. Module not activated.\n");
00076       if (enablecdr)
00077          ast_cdr_unregister(name);
00078       enablecdr = 0;
00079       return -1;
00080    }
00081 
00082    if (reload) {
00083       ast_rwlock_wrlock(&customfields_lock);
00084    }
00085 
00086    if (reload && customfields) {
00087       ast_free(customfields);
00088       customfields = NULL;
00089    }
00090 
00091    while ( (cat = ast_category_browse(cfg, cat)) ) {
00092       if (!strcasecmp(cat, "general")) {
00093          v = ast_variable_browse(cfg, cat);
00094          while (v) {
00095             if (!strcasecmp(v->name, "enabled"))
00096                newenablecdr = ast_true(v->value);
00097 
00098             v = v->next;
00099          }
00100       } else if (!strcasecmp(cat, "mappings")) {
00101          customfields = ast_str_create(CUSTOM_FIELDS_BUF_SIZE);
00102          v = ast_variable_browse(cfg, cat);
00103          while (v) {
00104             if (customfields && !ast_strlen_zero(v->name) && !ast_strlen_zero(v->value)) {
00105                if ((ast_str_strlen(customfields) + strlen(v->value) + strlen(v->name) + 14) < ast_str_size(customfields)) {
00106                   ast_str_append(&customfields, -1, "%s: ${CDR(%s)}\r\n", v->value, v->name);
00107                   ast_log(LOG_NOTICE, "Added mapping %s: ${CDR(%s)}\n", v->value, v->name);
00108                } else {
00109                   ast_log(LOG_WARNING, "No more buffer space to add other custom fields\n");
00110                   break;
00111                }
00112 
00113             }
00114             v = v->next;
00115          }
00116       }
00117    }
00118 
00119    if (reload) {
00120       ast_rwlock_unlock(&customfields_lock);
00121    }
00122 
00123    ast_config_destroy(cfg);
00124 
00125    if (enablecdr && !newenablecdr)
00126       ast_cdr_unregister(name);
00127    else if (!enablecdr && newenablecdr)
00128       ast_cdr_register(name, "Asterisk Manager Interface CDR Backend", manager_log);
00129    enablecdr = newenablecdr;
00130 
00131    return 0;
00132 }
00133 
00134 static int manager_log(struct ast_cdr *cdr)
00135 {
00136    struct ast_tm timeresult;
00137    char strStartTime[80] = "";
00138    char strAnswerTime[80] = "";
00139    char strEndTime[80] = "";
00140    char buf[CUSTOM_FIELDS_BUF_SIZE];
00141 
00142    if (!enablecdr)
00143       return 0;
00144 
00145    ast_localtime(&cdr->start, &timeresult, NULL);
00146    ast_strftime(strStartTime, sizeof(strStartTime), DATE_FORMAT, &timeresult);
00147 
00148    if (cdr->answer.tv_sec) {
00149       ast_localtime(&cdr->answer, &timeresult, NULL);
00150       ast_strftime(strAnswerTime, sizeof(strAnswerTime), DATE_FORMAT, &timeresult);
00151    }
00152 
00153    ast_localtime(&cdr->end, &timeresult, NULL);
00154    ast_strftime(strEndTime, sizeof(strEndTime), DATE_FORMAT, &timeresult);
00155 
00156    buf[0] = '\0';
00157    ast_rwlock_rdlock(&customfields_lock);
00158    if (customfields && ast_str_strlen(customfields)) {
00159       struct ast_channel *dummy = ast_dummy_channel_alloc();
00160       if (!dummy) {
00161          ast_log(LOG_ERROR, "Unable to allocate channel for variable substitution.\n");
00162          return 0;
00163       }
00164       dummy->cdr = ast_cdr_dup(cdr);
00165       pbx_substitute_variables_helper(dummy, ast_str_buffer(customfields), buf, sizeof(buf) - 1);
00166       ast_channel_release(dummy);
00167    }
00168    ast_rwlock_unlock(&customfields_lock);
00169 
00170    manager_event(EVENT_FLAG_CDR, "Cdr",
00171        "AccountCode: %s\r\n"
00172        "Source: %s\r\n"
00173        "Destination: %s\r\n"
00174        "DestinationContext: %s\r\n"
00175        "CallerID: %s\r\n"
00176        "Channel: %s\r\n"
00177        "DestinationChannel: %s\r\n"
00178        "LastApplication: %s\r\n"
00179        "LastData: %s\r\n"
00180        "StartTime: %s\r\n"
00181        "AnswerTime: %s\r\n"
00182        "EndTime: %s\r\n"
00183        "Duration: %ld\r\n"
00184        "BillableSeconds: %ld\r\n"
00185        "Disposition: %s\r\n"
00186        "AMAFlags: %s\r\n"
00187        "UniqueID: %s\r\n"
00188        "UserField: %s\r\n"
00189        "%s",
00190        cdr->accountcode, cdr->src, cdr->dst, cdr->dcontext, cdr->clid, cdr->channel,
00191        cdr->dstchannel, cdr->lastapp, cdr->lastdata, strStartTime, strAnswerTime, strEndTime,
00192        cdr->duration, cdr->billsec, ast_cdr_disp2str(cdr->disposition),
00193        ast_cdr_flags2str(cdr->amaflags), cdr->uniqueid, cdr->userfield,buf);
00194 
00195    return 0;
00196 }
00197 
00198 static int unload_module(void)
00199 {
00200    ast_cdr_unregister(name);
00201    if (customfields)
00202       ast_free(customfields);
00203 
00204    return 0;
00205 }
00206 
00207 static int load_module(void)
00208 {
00209    if (load_config(0)) {
00210       return AST_MODULE_LOAD_DECLINE;
00211    }
00212 
00213    return AST_MODULE_LOAD_SUCCESS;
00214 }
00215 
00216 static int reload(void)
00217 {
00218    return load_config(1);
00219 }
00220 
00221 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Asterisk Manager Interface CDR Backend",
00222       .load = load_module,
00223       .unload = unload_module,
00224       .reload = reload,
00225       .load_pri = AST_MODPRI_CDR_DRIVER,
00226           );

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