asterisk/cel/cel_radius.c

262 lines
6.7 KiB
C

/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2005, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief RADIUS CEL Support
* \author Philippe Sultan
* The Radius Client Library - http://developer.berlios.de/projects/radiusclient-ng/
* \ingroup cel_drivers
*/
/*** MODULEINFO
<depend>radius</depend>
<support_level>extended</support_level>
***/
#include "asterisk.h"
#include RADIUS_HEADER_STR
#include "asterisk/channel.h"
#include "asterisk/cel.h"
#include "asterisk/module.h"
#include "asterisk/logger.h"
#include "asterisk/utils.h"
#include "asterisk/options.h"
/*! ISO 8601 standard format */
#define DATE_FORMAT "%Y-%m-%d %T %z"
#define VENDOR_CODE 22736
enum {
PW_AST_ACCT_CODE = 101,
PW_AST_CIDNUM = 102,
PW_AST_CIDNAME = 103,
PW_AST_CIDANI = 104,
PW_AST_CIDRDNIS = 105,
PW_AST_CIDDNID = 106,
PW_AST_EXTEN = 107,
PW_AST_CONTEXT = 108,
PW_AST_CHANNAME = 109,
PW_AST_APPNAME = 110,
PW_AST_APPDATA = 111,
PW_AST_EVENT_TIME = 112,
PW_AST_AMA_FLAGS = 113,
PW_AST_UNIQUE_ID = 114,
PW_AST_USER_NAME = 115,
PW_AST_LINKED_ID = 116,
};
enum {
/*! Log dates and times in UTC */
RADIUS_FLAG_USEGMTIME = (1 << 0),
/*! Log Unique ID */
RADIUS_FLAG_LOGUNIQUEID = (1 << 1),
/*! Log User Field */
RADIUS_FLAG_LOGUSERFIELD = (1 << 2)
};
static char *cel_config = "cel.conf";
#ifdef FREERADIUS_CLIENT
static char radiuscfg[PATH_MAX] = "/etc/radiusclient/radiusclient.conf";
#else
static char radiuscfg[PATH_MAX] = "/etc/radiusclient-ng/radiusclient.conf";
#endif
static struct ast_flags global_flags = { RADIUS_FLAG_USEGMTIME | RADIUS_FLAG_LOGUNIQUEID | RADIUS_FLAG_LOGUSERFIELD };
static rc_handle *rh = NULL;
#define RADIUS_BACKEND_NAME "CEL Radius Logging"
#define ADD_VENDOR_CODE(x,y) (rc_avpair_add(rh, send, x, (void *)y, strlen(y), VENDOR_CODE))
static int build_radius_record(VALUE_PAIR **send, struct ast_cel_event_record *record)
{
int recordtype = PW_STATUS_STOP;
struct ast_tm tm;
char timestr[128];
char *amaflags;
if (!rc_avpair_add(rh, send, PW_ACCT_STATUS_TYPE, &recordtype, 0, 0)) {
return -1;
}
/* Account code */
if (!ADD_VENDOR_CODE(PW_AST_ACCT_CODE, record->account_code)) {
return -1;
}
/* Source */
if (!ADD_VENDOR_CODE(PW_AST_CIDNUM, record->caller_id_num)) {
return -1;
}
/* Destination */
if (!ADD_VENDOR_CODE(PW_AST_EXTEN, record->extension)) {
return -1;
}
/* Destination context */
if (!ADD_VENDOR_CODE(PW_AST_CONTEXT, record->context)) {
return -1;
}
/* Caller ID */
if (!ADD_VENDOR_CODE(PW_AST_CIDNAME, record->caller_id_name)) {
return -1;
}
/* Caller ID ani */
if (!ADD_VENDOR_CODE(PW_AST_CIDANI, record->caller_id_ani)) {
return -1;
}
/* Caller ID rdnis */
if (!ADD_VENDOR_CODE(PW_AST_CIDRDNIS, record->caller_id_rdnis)) {
return -1;
}
/* Caller ID dnid */
if (!ADD_VENDOR_CODE(PW_AST_CIDDNID, record->caller_id_dnid)) {
return -1;
}
/* Channel */
if (!ADD_VENDOR_CODE(PW_AST_CHANNAME, record->channel_name)) {
return -1;
}
/* Last Application */
if (!ADD_VENDOR_CODE(PW_AST_APPNAME, record->application_name)) {
return -1;
}
/* Last Data */
if (!ADD_VENDOR_CODE(PW_AST_APPDATA, record->application_data)) {
return -1;
}
/* Event Time */
ast_localtime(&record->event_time, &tm,
ast_test_flag(&global_flags, RADIUS_FLAG_USEGMTIME) ? "GMT" : NULL);
ast_strftime(timestr, sizeof(timestr), DATE_FORMAT, &tm);
if (!rc_avpair_add(rh, send, PW_AST_EVENT_TIME, timestr, strlen(timestr), VENDOR_CODE)) {
return -1;
}
/* AMA Flags */
amaflags = ast_strdupa(ast_channel_amaflags2string(record->amaflag));
if (!rc_avpair_add(rh, send, PW_AST_AMA_FLAGS, amaflags, strlen(amaflags), VENDOR_CODE)) {
return -1;
}
if (ast_test_flag(&global_flags, RADIUS_FLAG_LOGUNIQUEID)) {
/* Unique ID */
if (!ADD_VENDOR_CODE(PW_AST_UNIQUE_ID, record->unique_id)) {
return -1;
}
}
/* LinkedID */
if (!ADD_VENDOR_CODE(PW_AST_LINKED_ID, record->linked_id)) {
return -1;
}
/* Setting Acct-Session-Id & User-Name attributes for proper generation
of Acct-Unique-Session-Id on server side */
/* Channel */
if (!rc_avpair_add(rh, send, PW_USER_NAME, (void *)record->channel_name,
strlen(record->channel_name), 0)) {
return -1;
}
return 0;
}
static void radius_log(struct ast_event *event)
{
int result = ERROR_RC;
VALUE_PAIR *send = NULL;
struct ast_cel_event_record record = {
.version = AST_CEL_EVENT_RECORD_VERSION,
};
if (ast_cel_fill_record(event, &record)) {
return;
}
if (build_radius_record(&send, &record)) {
ast_debug(1, "Unable to create RADIUS record. CEL not recorded!\n");
goto return_cleanup;
}
result = rc_acct(rh, 0, send);
if (result != OK_RC) {
ast_log(LOG_ERROR, "Failed to record Radius CEL record!\n");
}
return_cleanup:
if (send) {
rc_avpair_free(send);
}
}
static int unload_module(void)
{
ast_cel_backend_unregister(RADIUS_BACKEND_NAME);
if (rh) {
rc_destroy(rh);
rh = NULL;
}
return AST_MODULE_LOAD_SUCCESS;
}
static int load_module(void)
{
struct ast_config *cfg;
struct ast_flags config_flags = { 0 };
const char *tmp;
if ((cfg = ast_config_load(cel_config, config_flags))) {
ast_set2_flag(&global_flags, ast_true(ast_variable_retrieve(cfg, "radius", "usegmtime")), RADIUS_FLAG_USEGMTIME);
if ((tmp = ast_variable_retrieve(cfg, "radius", "radiuscfg"))) {
ast_copy_string(radiuscfg, tmp, sizeof(radiuscfg));
}
ast_config_destroy(cfg);
} else {
return AST_MODULE_LOAD_DECLINE;
}
/* read radiusclient-ng config file */
if (!(rh = rc_read_config(radiuscfg))) {
ast_log(LOG_NOTICE, "Cannot load radiusclient-ng configuration file %s.\n", radiuscfg);
return AST_MODULE_LOAD_DECLINE;
}
/* read radiusclient-ng dictionaries */
if (rc_read_dictionary(rh, rc_conf_str(rh, "dictionary"))) {
ast_log(LOG_NOTICE, "Cannot load radiusclient-ng dictionary file.\n");
rc_destroy(rh);
rh = NULL;
return AST_MODULE_LOAD_DECLINE;
}
if (ast_cel_backend_register(RADIUS_BACKEND_NAME, radius_log)) {
rc_destroy(rh);
rh = NULL;
return AST_MODULE_LOAD_DECLINE;
} else {
return AST_MODULE_LOAD_SUCCESS;
}
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "RADIUS CEL Backend",
.support_level = AST_MODULE_SUPPORT_EXTENDED,
.load = load_module,
.unload = unload_module,
.load_pri = AST_MODPRI_CDR_DRIVER,
.requires = "cel",
);