You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
kamailio/modules/acc/acc_mod.c

874 lines
22 KiB

/*
* $Id$
*
* Accounting module
*
* Copyright (C) 2001-2003 FhG Fokus
* Copyright (C) 2006 Voice Sistem SRL
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version
*
* Kamailio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* History:
* -------
* 2003-03-06: aligned to change in callback names (jiri)
* 2003-03-06: fixed improper sql connection, now from
* child_init (jiri)
* 2003-03-11: New module interface (janakj)
* 2003-03-16: flags export parameter added (janakj)
* 2003-04-04 grand acc cleanup (jiri)
* 2003-04-06: Opens database connection in child_init only (janakj)
* 2003-04-24 parameter validation (0 t->uas.request) added (jiri)
* 2003-11-04 multidomain support for mysql introduced (jiri)
* 2003-12-04 global TM callbacks switched to per transaction callbacks
* (bogdan)
* 2004-06-06 db cleanup: static db_url, calls to acc_db_{bind,init,close)
* (andrei)
* 2005-05-30 acc_extra patch commited (ramona)
* 2005-06-28 multi leg call support added (bogdan)
* 2006-01-13 detect_direction (for sequential requests) added (bogdan)
* 2006-09-08 flexible multi leg accounting support added (bogdan)
* 2006-09-19 final stage of a masive re-structuring and cleanup (bogdan)
*/
/*! \file
* \ingroup acc
* \brief Acc:: Core module interface
*
* - Module: \ref acc
*/
/*! \defgroup acc ACC :: The Kamailio accounting Module
*
* The ACC module is used to account transactions information to
* different backends like syslog, SQL, RADIUS and DIAMETER (beta
* version).
*
*/
#include <stdio.h>
#include <string.h>
#include "../../sr_module.h"
#include "../../dprint.h"
#include "../../mem/mem.h"
#include "../../modules/tm/tm_load.h"
#include "../../str.h"
#include "../rr/api.h"
#include "acc.h"
#include "acc_api.h"
#include "acc_mod.h"
#include "acc_extra.h"
#include "acc_logic.h"
#include "acc_cdr.h"
#ifdef RAD_ACC
#include "../../lib/kcore/radius.h"
#endif
#ifdef DIAM_ACC
#include "diam_dict.h"
#include "diam_tcp.h"
#endif
MODULE_VERSION
struct tm_binds tmb;
struct rr_binds rrb;
static int mod_init(void);
static void destroy(void);
static int child_init(int rank);
/* ----- General purpose variables ----------- */
/* what would you like to report on */
int early_media = 0; /*!< should early media replies (183) be logged ? default==no */
int report_cancels = 0; /*!< would you like us to report CANCELs from upstream too? */
int report_ack = 0; /*!< report e2e ACKs too */
int detect_direction = 0; /*!< detect and correct direction in the sequential requests */
int failed_transaction_flag = -1; /*!< should failed replies (>=3xx) be logged ? default==no */
static char *failed_filter_str = 0; /* by default, do not filter logging of
failed transactions */
unsigned short failed_filter[MAX_FAILED_FILTER_COUNT + 1];
static char* leg_info_str = 0; /*!< multi call-leg support */
struct acc_extra *leg_info = 0;
int acc_prepare_always = 0; /* prepare the request always for later acc */
int acc_prepare_flag = -1; /*!< should the request be prepared for later acc */
char *acc_time_format = "%Y-%m-%d %H:%M:%S";
int reason_from_hf = 0; /*!< assign reason from reason hf if present */
/* ----- time mode variables ------- */
/*! \name AccTimeModeVariables Time Mode Variables */
/*@{*/
int acc_time_mode = 0;
str acc_time_attr = str_init("time_attr");
str acc_time_exten = str_init("time_exten");
int _acc_clone_msg = 1;
int _acc_cdr_on_failed = 1;
/*@}*/
/* ----- SYSLOG acc variables ----------- */
/*! \name AccSyslogVariables Syslog Variables */
/*@{*/
int log_flag = -1;
int log_missed_flag = -1;
int log_level = L_NOTICE; /*!< Syslog: noisiness level logging facilities are used */
int log_facility = LOG_DAEMON; /*!< Syslog: log facility that is used */
static char * log_facility_str = 0; /*!< Syslog: log facility that is used */
static char *log_extra_str = 0; /*!< Syslog: log extra variables */
struct acc_extra *log_extra = 0; /*!< Log extra attributes */
/*@}*/
/* ----- CDR generation variables ------- */
/*! \name AccCdrVariables CDR Variables */
/*@{*/
int cdr_enable = 0;
int cdr_log_enable = 1;
int cdr_start_on_confirmed = 0;
int cdr_expired_dlg_enable = 0;
static char* cdr_facility_str = 0;
static char* cdr_log_extra_str = 0;
str cdr_start_str = str_init("start_time");
str cdr_end_str = str_init("end_time");
str cdr_duration_str = str_init("duration");
/* name for db table to store dialog-based cdrs */
str acc_cdrs_table = str_init("");
/*@}*/
/* ----- RADIUS acc variables ----------- */
/*! \name AccRadiusVariables Radius Variables */
/*@{*/
#ifdef RAD_ACC
static char *radius_config = 0;
int radius_flag = -1;
int radius_missed_flag = -1;
static int service_type = -1;
void *rh;
/* rad extra variables */
static char *rad_extra_str = 0;
struct acc_extra *rad_extra = 0;
#endif
/*@}*/
/* ----- DIAMETER acc variables ----------- */
/*! \name AccDiamaterVariables Radius Variables */
/*@{*/
#ifdef DIAM_ACC
int diameter_flag = -1;
int diameter_missed_flag = -1;
static char *dia_extra_str = 0; /*!< diameter extra variables */
struct acc_extra *dia_extra = 0;
rd_buf_t *rb; /*!< buffer used to read from TCP connection*/
char* diameter_client_host="localhost";
int diameter_client_port=3000;
#endif
/*@}*/
/* ----- SQL acc variables ----------- */
/*! \name AccSQLVariables Radius Variables */
/*@{*/
#ifdef SQL_ACC
int db_flag = -1;
int db_missed_flag = -1;
static char *db_extra_str = 0; /*!< db extra variables */
struct acc_extra *db_extra = 0;
static str db_url = {NULL, 0}; /*!< Database url */
str db_table_acc = str_init("acc"); /*!< name of database tables */
void *db_table_acc_data = NULL;
str db_table_mc = str_init("missed_calls");
void *db_table_mc_data = NULL;
/* names of columns in tables acc/missed calls*/
str acc_method_col = str_init("method");
str acc_fromtag_col = str_init("from_tag");
str acc_totag_col = str_init("to_tag");
str acc_callid_col = str_init("callid");
str acc_sipcode_col = str_init("sip_code");
str acc_sipreason_col = str_init("sip_reason");
str acc_time_col = str_init("time");
int acc_db_insert_mode = 0;
#endif
/*@}*/
static int bind_acc(acc_api_t* api);
static int acc_register_engine(acc_engine_t *eng);
static int acc_init_engines(void);
static acc_engine_t *_acc_engines=NULL;
static int _acc_module_initialized = 0;
/* ------------- fixup function --------------- */
static int acc_fixup(void** param, int param_no);
static int free_acc_fixup(void** param, int param_no);
static cmd_export_t cmds[] = {
{"acc_log_request", (cmd_function)w_acc_log_request, 1,
acc_fixup, free_acc_fixup,
ANY_ROUTE},
#ifdef SQL_ACC
{"acc_db_request", (cmd_function)w_acc_db_request, 2,
acc_fixup, free_acc_fixup,
ANY_ROUTE},
#endif
#ifdef RAD_ACC
{"acc_rad_request", (cmd_function)w_acc_rad_request, 1,
acc_fixup, free_acc_fixup,
ANY_ROUTE},
#endif
#ifdef DIAM_ACC
{"acc_diam_request",(cmd_function)w_acc_diam_request,1,
acc_fixup, free_acc_fixup,
ANY_ROUTE},
#endif
{"bind_acc", (cmd_function)bind_acc, 0, 0, 0},
{0, 0, 0, 0, 0, 0}
};
static param_export_t params[] = {
{"early_media", INT_PARAM, &early_media },
{"failed_transaction_flag", INT_PARAM, &failed_transaction_flag },
{"failed_filter", PARAM_STRING, &failed_filter_str },
{"report_ack", INT_PARAM, &report_ack },
{"report_cancels", INT_PARAM, &report_cancels },
{"multi_leg_info", PARAM_STRING, &leg_info_str },
{"detect_direction", INT_PARAM, &detect_direction },
{"acc_prepare_flag", INT_PARAM, &acc_prepare_flag },
{"acc_prepare_always", INT_PARAM, &acc_prepare_always },
{"reason_from_hf", INT_PARAM, &reason_from_hf },
/* syslog specific */
{"log_flag", INT_PARAM, &log_flag },
{"log_missed_flag", INT_PARAM, &log_missed_flag },
{"log_level", INT_PARAM, &log_level },
{"log_facility", PARAM_STRING, &log_facility_str },
{"log_extra", PARAM_STRING, &log_extra_str },
/* cdr specific */
{"cdr_enable", INT_PARAM, &cdr_enable },
{"cdr_log_enable", INT_PARAM, &cdr_log_enable },
{"cdr_start_on_confirmed", INT_PARAM, &cdr_start_on_confirmed },
{"cdr_facility", PARAM_STRING, &cdr_facility_str },
{"cdr_extra", PARAM_STRING, &cdr_log_extra_str },
{"cdr_start_id", PARAM_STR, &cdr_start_str },
{"cdr_end_id", PARAM_STR, &cdr_end_str },
{"cdr_duration_id", PARAM_STR, &cdr_duration_str },
{"cdr_expired_dlg_enable", INT_PARAM, &cdr_expired_dlg_enable },
#ifdef RAD_ACC
{"radius_config", PARAM_STRING, &radius_config },
{"radius_flag", INT_PARAM, &radius_flag },
{"radius_missed_flag", INT_PARAM, &radius_missed_flag },
{"service_type", INT_PARAM, &service_type },
{"radius_extra", PARAM_STRING, &rad_extra_str },
#endif
/* DIAMETER specific */
#ifdef DIAM_ACC
{"diameter_flag", INT_PARAM, &diameter_flag },
{"diameter_missed_flag", INT_PARAM, &diameter_missed_flag },
{"diameter_client_host", PARAM_STRING, &diameter_client_host },
{"diameter_client_port", INT_PARAM, &diameter_client_port },
{"diameter_extra", PARAM_STRING, &dia_extra_str },
#endif
/* db-specific */
#ifdef SQL_ACC
{"db_flag", INT_PARAM, &db_flag },
{"db_missed_flag", INT_PARAM, &db_missed_flag },
{"db_extra", PARAM_STRING, &db_extra_str },
{"db_url", PARAM_STR, &db_url },
{"db_table_acc", PARAM_STR, &db_table_acc },
{"db_table_missed_calls",PARAM_STR, &db_table_mc },
{"acc_method_column", PARAM_STR, &acc_method_col },
{"acc_from_tag_column", PARAM_STR, &acc_fromtag_col },
{"acc_to_tag_column", PARAM_STR, &acc_totag_col },
{"acc_callid_column", PARAM_STR, &acc_callid_col },
{"acc_sip_code_column", PARAM_STR, &acc_sipcode_col },
{"acc_sip_reason_column",PARAM_STR, &acc_sipreason_col },
{"acc_time_column", PARAM_STR, &acc_time_col },
{"db_insert_mode", INT_PARAM, &acc_db_insert_mode },
#endif
/* time-mode-specific */
{"time_mode", INT_PARAM, &acc_time_mode },
{"time_attr", PARAM_STR, &acc_time_attr },
{"time_exten", PARAM_STR, &acc_time_exten },
{"cdrs_table", PARAM_STR, &acc_cdrs_table },
{"time_format", PARAM_STRING, &acc_time_format },
{"clone_msg", PARAM_INT, &_acc_clone_msg },
{"cdr_on_failed", PARAM_INT, &_acc_cdr_on_failed },
{0,0,0}
};
struct module_exports exports= {
"acc",
DEFAULT_DLFLAGS, /* dlopen flags */
cmds, /* exported functions */
params, /* exported params */
0, /* exported statistics */
0, /* exported MI functions */
0, /* exported pseudo-variables */
0, /* extra processes */
mod_init, /* initialization module */
0, /* response function */
destroy, /* destroy function */
child_init /* per-child init function */
};
/************************** FIXUP functions ****************************/
static int acc_fixup(void** param, int param_no)
{
struct acc_param *accp;
char *p;
p = (char*)*param;
if (p==0 || p[0]==0) {
LM_ERR("first parameter is empty\n");
return E_SCRIPT;
}
if (param_no == 1) {
accp = (struct acc_param*)pkg_malloc(sizeof(struct acc_param));
if (!accp) {
LM_ERR("no more pkg mem\n");
return E_OUT_OF_MEM;
}
memset( accp, 0, sizeof(struct acc_param));
accp->reason.s = p;
accp->reason.len = strlen(p);
if (strchr(p,PV_MARKER)!=NULL) { /* is a variable $xxxxx */
if (pv_parse_format(&accp->reason, &accp->elem)<0)
{
LM_ERR("bad param 1; "
"parse format error [%.*s]\n", accp->reason.len, accp->reason.s);
return E_UNSPEC;
}
}
else {
if(acc_parse_code(p,accp)<0)
{
LM_ERR("bad param 1;"
"parse code error\n");
return E_UNSPEC;
}
}
*param = (void*)accp;
#ifdef SQL_ACC
} else if (param_no == 2) {
/* only for db acc - the table name */
if (db_url.s==0) {
pkg_free(p);
*param = 0;
} else {
return fixup_var_pve_str_12(param, 2);
}
#endif
}
return 0;
}
static int free_acc_fixup(void** param, int param_no)
{
if(*param)
{
pkg_free(*param);
*param = 0;
}
return 0;
}
/************************** INTERFACE functions ****************************/
static int parse_failed_filter(char *s, unsigned short *failed_filter)
{
unsigned int n;
char *at;
n = 0;
while (1) {
if (n >= MAX_FAILED_FILTER_COUNT) {
LM_ERR("too many elements in failed_filter\n");
return 0;
}
at = s;
while ((*at >= '0') && (*at <= '9')) at++;
if (at - s != 3) {
LM_ERR("respose code in failed_filter must have 3 digits\n");
return 0;
}
failed_filter[n] = (*s - '0') * 100 + (*(s + 1) - '0') * 10 +
(*(s + 2) - '0');
if (failed_filter[n] < 300) {
LM_ERR("invalid respose code %u in failed_filter\n",
failed_filter[n]);
return 0;
}
LM_DBG("failed_filter %u = %u\n", n, failed_filter[n]);
n++;
failed_filter[n] = 0;
s = at;
if (*s == 0)
return 1;
if (*s != ',') {
LM_ERR("response code is not followed by comma or end of string\n");
return 0;
}
s++;
}
}
static int mod_init( void )
{
#ifdef SQL_ACC
if (db_url.s) {
if(db_url.len<=0) {
db_url.s = NULL;
db_url.len = 0;
}
}
if(db_table_acc.len!=3 || strncmp(db_table_acc.s, "acc", 3)!=0)
{
db_table_acc_data = db_table_acc.s;
if(fixup_var_pve_str_12(&db_table_acc_data, 1)<0)
{
LM_ERR("unable to parse acc table name [%.*s]\n",
db_table_acc.len, db_table_acc.s);
return -1;
}
}
if(db_table_mc.len!=12 || strncmp(db_table_mc.s, "missed_calls", 12)!=0)
{
db_table_mc_data = db_table_mc.s;
if(fixup_var_pve_str_12(&db_table_mc_data, 1)<0)
{
LM_ERR("unable to parse mc table name [%.*s]\n",
db_table_mc.len, db_table_mc.s);
return -1;
}
}
#endif
if (log_facility_str) {
int tmp = str2facility(log_facility_str);
if (tmp != -1)
log_facility = tmp;
else {
LM_ERR("invalid log facility configured");
return -1;
}
}
/* ----------- GENERIC INIT SECTION ----------- */
/* failed transaction handling */
if ((failed_transaction_flag != -1) &&
!flag_in_range(failed_transaction_flag)) {
LM_ERR("failed_transaction_flag set to invalid value\n");
return -1;
}
if (failed_filter_str) {
if (parse_failed_filter(failed_filter_str, failed_filter) == 0) {
LM_ERR("failed to parse failed_filter param\n");
return -1;
}
} else {
failed_filter[0] = 0;
}
/* load the TM API */
if (load_tm_api(&tmb)!=0) {
LM_ERR("can't load TM API\n");
return -1;
}
/* if detect_direction is enabled, load rr also */
if (detect_direction) {
if (load_rr_api(&rrb)!=0) {
LM_ERR("can't load RR API\n");
return -1;
}
/* we need the append_fromtag on in RR */
if (!rrb.append_fromtag) {
LM_ERR("'append_fromtag' RR param is not enabled!"
" - required by 'detect_direction'\n");
return -1;
}
}
/* listen for all incoming requests */
if ( tmb.register_tmcb( 0, 0, TMCB_REQUEST_IN, acc_onreq, 0, 0 ) <=0 ) {
LM_ERR("cannot register TMCB_REQUEST_IN callback\n");
return -1;
}
/* configure multi-leg accounting */
if (leg_info_str && (leg_info=parse_acc_leg(leg_info_str))==0 ) {
LM_ERR("failed to parse multileg_info param\n");
return -1;
}
/* ----------- SYSLOG INIT SECTION ----------- */
/* parse the extra string, if any */
if (log_extra_str && (log_extra=parse_acc_extra(log_extra_str))==0 ) {
LM_ERR("failed to parse log_extra param\n");
return -1;
}
if ((log_flag != -1) && !flag_in_range(log_flag)) {
LM_ERR("log_flag set to invalid value\n");
return -1;
}
if ((log_missed_flag != -1) && !flag_in_range(log_missed_flag)) {
LM_ERR("log_missed_flag set to invalid value\n");
return -1;
}
acc_log_init();
/* ----------- INIT CDR GENERATION ----------- */
if( cdr_enable < 0 || cdr_enable > 1)
{
LM_ERR("cdr_enable is out of range\n");
return -1;
}
if( cdr_expired_dlg_enable < 0 || cdr_expired_dlg_enable > 1)
{
LM_ERR("cdr_expired_dlg_enable is out of range\n");
return -1;
}
if( cdr_enable)
{
if( !cdr_start_str.s || !cdr_end_str.s || !cdr_duration_str.s)
{
LM_ERR( "necessary cdr_parameters are not set\n");
return -1;
}
if( !cdr_start_str.len || !cdr_end_str.len || !cdr_duration_str.len)
{
LM_ERR( "necessary cdr_parameters are empty\n");
return -1;
}
if( set_cdr_extra( cdr_log_extra_str) != 0)
{
LM_ERR( "failed to set cdr extra '%s'\n", cdr_log_extra_str);
return -1;
}
if( cdr_facility_str && set_cdr_facility( cdr_facility_str) != 0)
{
LM_ERR( "failed to set cdr facility '%s'\n", cdr_facility_str);
return -1;
}
if( init_cdr_generation() != 0)
{
LM_ERR("failed to init cdr generation\n");
return -1;
}
}
/* ------------ SQL INIT SECTION ----------- */
#ifdef SQL_ACC
if (db_url.s && db_url.len > 0) {
/* parse the extra string, if any */
if (db_extra_str && (db_extra=parse_acc_extra(db_extra_str))==0 ) {
LM_ERR("failed to parse db_extra param\n");
return -1;
}
if (acc_db_init(&db_url)<0){
LM_ERR("failed...did you load a database module?\n");
return -1;
}
/* fix the flags */
if ((db_flag != -1) && !flag_in_range(db_flag)) {
LM_ERR("db_flag set to invalid value\n");
return -1;
}
if ((db_missed_flag != -1) && !flag_in_range(db_missed_flag)) {
LM_ERR("db_missed_flag set to invalid value\n");
return -1;
}
} else {
db_url.s = NULL;
db_url.len = 0;
db_flag = -1;
db_missed_flag = -1;
}
#endif
/* ------------ RADIUS INIT SECTION ----------- */
#ifdef RAD_ACC
if (radius_config && radius_config[0]) {
/* parse the extra string, if any */
if (rad_extra_str && (rad_extra=parse_acc_extra(rad_extra_str))==0 ) {
LM_ERR("failed to parse rad_extra param\n");
return -1;
}
/* fix the flags */
if ((radius_flag != -1) && !flag_in_range(radius_flag)) {
LM_ERR("radius_flag set to invalid value\n");
return -1;
}
if ((radius_missed_flag != -1) && !flag_in_range(radius_missed_flag)) {
LM_ERR("radius_missed_flag set to invalid value\n");
return -1;
}
if (init_acc_rad( radius_config, service_type)!=0 ) {
LM_ERR("failed to init radius\n");
return -1;
}
} else {
radius_config = 0;
radius_flag = -1;
radius_missed_flag = -1;
}
#endif
/* ------------ DIAMETER INIT SECTION ----------- */
#ifdef DIAM_ACC
/* fix the flags */
if (flag_idx2mask(&diameter_flag)<0)
return -1;
if (flag_idx2mask(&diameter_missed_flag)<0)
return -1;
/* parse the extra string, if any */
if (dia_extra_str && (dia_extra=parse_acc_extra(dia_extra_str))==0 ) {
LM_ERR("failed to parse dia_extra param\n");
return -1;
}
if (acc_diam_init()!=0) {
LM_ERR("failed to init diameter engine\n");
return -1;
}
#endif
_acc_module_initialized = 1;
if(acc_init_engines()<0) {
LM_ERR("failed to init extra engines\n");
return -1;
}
return 0;
}
static int child_init(int rank)
{
if (rank==PROC_INIT || rank==PROC_MAIN || rank==PROC_TCP_MAIN)
return 0; /* do nothing for the main process */
#ifdef SQL_ACC
if(db_url.s && acc_db_init_child(&db_url)<0) {
LM_ERR("could not open database connection");
return -1;
}
#endif
/* DIAMETER */
#ifdef DIAM_ACC
/* open TCP connection */
LM_DBG("initializing TCP connection\n");
sockfd = init_mytcp(diameter_client_host, diameter_client_port);
if(sockfd==-1)
{
LM_ERR("TCP connection not established\n");
return -1;
}
LM_DBG("a TCP connection was established on sockfd=%d\n", sockfd);
/* every child with its buffer */
rb = (rd_buf_t*)pkg_malloc(sizeof(rd_buf_t));
if(!rb)
{
LM_DBG("no more pkg memory\n");
return -1;
}
rb->buf = 0;
#endif
return 0;
}
static void destroy(void)
{
if (log_extra)
destroy_extras( log_extra);
#ifdef SQL_ACC
acc_db_close();
if (db_extra)
destroy_extras( db_extra);
#endif
#ifdef RAD_ACC
if (rad_extra)
destroy_extras( rad_extra);
#endif
#ifdef DIAM_ACC
close_tcp_connection(sockfd);
if (dia_extra)
destroy_extras( dia_extra);
#endif
}
/**
* @brief return leg_info structure
*/
acc_extra_t* get_leg_info(void)
{
return leg_info;
}
/**
* @brief bind functions to ACC API structure
*/
static int bind_acc(acc_api_t* api)
{
if (!api) {
ERR("Invalid parameter value\n");
return -1;
}
api->register_engine = acc_register_engine;
api->get_leg_info = get_leg_info;
api->get_core_attrs = core2strar;
api->get_extra_attrs = extra2strar;
api->get_leg_attrs = legs2strar;
api->parse_extra = parse_acc_extra;
api->exec = acc_api_exec;
return 0;
}
/**
* @brief init an acc engine
*/
static int acc_init_engine(acc_engine_t *e)
{
acc_init_info_t ai;
if(_acc_module_initialized==0)
return 0;
if(e->flags & 1)
return 0;
memset(&ai, 0, sizeof(acc_init_info_t));
ai.leg_info = leg_info;
if(e->acc_init(&ai)<0)
{
LM_ERR("failed to initialize extra acc engine\n");
return -1;
}
e->flags |= 1;
return 0;
}
/**
* @brief init registered acc engines
*/
static int acc_init_engines(void)
{
acc_engine_t *e;
e = _acc_engines;
while(e) {
if(acc_init_engine(e)<0)
return -1;
e = e->next;
}
return 0;
}
/**
* @brief register an accounting engine
* @return 0 on success, <0 on failure
*/
static int acc_register_engine(acc_engine_t *eng)
{
acc_engine_t *e;
if(eng==NULL)
return -1;
e = (acc_engine_t*)pkg_malloc(sizeof(acc_engine_t));
if(e ==NULL)
{
LM_ERR("no more pkg\n");
return -1;
}
memcpy(e, eng, sizeof(acc_engine_t));
if(acc_init_engine(e)<0)
{
pkg_free(e);
return -1;
}
e->next = _acc_engines;
_acc_engines = e;
LM_DBG("new acc engine registered: %s\n", e->name);
return 0;
}
/**
*
*/
acc_engine_t *acc_api_get_engines(void)
{
return _acc_engines;
}