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455 lines
12 KiB
455 lines
12 KiB
/*
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* Radius Accounting module
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*
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* Copyright (C) 2001-2003 FhG Fokus
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*
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* This file is part of Kamailio, a free SIP server.
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*
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* Kamailio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* Kamailio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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/*! \file
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* \ingroup acc_radius
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* \brief Acc_radius:: Core module interface
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*
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* - Module: \ref acc_radius
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*/
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/*! \defgroup acc_radius ACC_RADIUS :: The Kamailio RADIUS accounting Module
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*
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* The ACC_RADIUS module is used to account transactions information to
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* RADIUS
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*/
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#include <stdio.h>
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#include <string.h>
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#include "../../sr_module.h"
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#include "../../dprint.h"
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#include "../../mem/mem.h"
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#include "../../parser/parse_to.h"
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#include "../../lib/kcore/radius.h"
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#include "../../modules/acc/acc_api.h"
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#include "acc_radius_mod.h"
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#include "../../modules/acc/acc_extra.h"
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MODULE_VERSION
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static int mod_init(void);
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static void destroy(void);
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static int child_init(int rank);
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int acc_radius_init(acc_init_info_t *inf);
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int acc_radius_send_request(struct sip_msg *req, acc_info_t *inf);
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static int w_acc_radius_request(struct sip_msg *rq, char *comment, char *foo);
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static int acc_api_fixup(void** param, int param_no);
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static int free_acc_api_fixup(void** param, int param_no);
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int init_acc_rad(acc_extra_t *leg_info, char *rad_cfg, int srv_type);
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int extra2attrs(struct acc_extra *extra, struct attr *attrs, int offset);
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/*! ACC API structure */
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acc_api_t accb;
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acc_engine_t _acc_radius_engine;
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/* ----- RADIUS acc variables ----------- */
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/*! \name AccRadiusVariables Radius Variables */
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/*@{*/
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static char *radius_config = 0;
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int radius_flag = -1;
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int radius_missed_flag = -1;
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static int service_type = -1;
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int rad_time_mode=0;
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void *rh;
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/* rad extra variables */
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static char *rad_extra_str = 0;
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acc_extra_t *rad_extra = 0;
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/*@}*/
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static cmd_export_t cmds[] = {
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{"acc_rad_request", (cmd_function)w_acc_radius_request, 1,
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acc_api_fixup, free_acc_api_fixup,
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ANY_ROUTE},
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{0, 0, 0, 0, 0, 0}
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};
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static param_export_t params[] = {
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{"radius_config", PARAM_STRING, &radius_config },
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{"radius_flag", INT_PARAM, &radius_flag },
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{"radius_missed_flag", INT_PARAM, &radius_missed_flag },
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{"service_type", INT_PARAM, &service_type },
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{"radius_extra", PARAM_STRING, &rad_extra_str },
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{"rad_time_mode", INT_PARAM, &rad_time_mode },
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{0,0,0}
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};
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struct module_exports exports= {
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"acc_radius",
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DEFAULT_DLFLAGS, /* dlopen flags */
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cmds, /* exported functions */
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params, /* exported params */
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0, /* exported statistics */
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0, /* exported MI functions */
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0, /* exported pseudo-variables */
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0, /* extra processes */
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mod_init, /* initialization module */
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0, /* response function */
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destroy, /* destroy function */
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child_init /* per-child init function */
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};
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/************************** INTERFACE functions ****************************/
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static int mod_init( void )
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{
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if (radius_config==NULL || radius_config[0]=='\0') {
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LM_ERR("radius config file not set\n");
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return -1;
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}
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/* bind the ACC API */
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if (acc_load_api(&accb)<0) {
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LM_ERR("cannot bind to ACC API\n");
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return -1;
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}
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/* parse the extra string, if any */
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if (rad_extra_str && (rad_extra=accb.parse_extra(rad_extra_str))==0 ) {
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LM_ERR("failed to parse rad_extra param\n");
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return -1;
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}
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memset(&_acc_radius_engine, 0, sizeof(acc_engine_t));
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if(radius_flag != -1)
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_acc_radius_engine.acc_flag = 1<<radius_flag;
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if(radius_missed_flag != -1)
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_acc_radius_engine.missed_flag = 1<<radius_missed_flag;
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_acc_radius_engine.acc_req = acc_radius_send_request;
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_acc_radius_engine.acc_init = acc_radius_init;
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memcpy(_acc_radius_engine.name, "radius", 6);
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if(accb.register_engine(&_acc_radius_engine)<0)
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{
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LM_ERR("cannot register ACC RADIUS engine\n");
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return -1;
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}
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return 0;
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}
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static int child_init(int rank)
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{
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if (rank==PROC_INIT || rank==PROC_MAIN || rank==PROC_TCP_MAIN)
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return 0; /* do nothing for the main process */
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return 0;
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}
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static void destroy(void)
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{
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}
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static int acc_api_fixup(void** param, int param_no)
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{
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struct acc_param *accp;
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char *p;
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p = (char*)*param;
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if (p==0 || p[0]==0) {
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LM_ERR("first parameter is empty\n");
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return E_SCRIPT;
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}
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if (param_no == 1) {
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accp = (struct acc_param*)pkg_malloc(sizeof(struct acc_param));
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if (!accp) {
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LM_ERR("no more pkg mem\n");
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return E_OUT_OF_MEM;
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}
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memset( accp, 0, sizeof(struct acc_param));
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accp->reason.s = p;
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accp->reason.len = strlen(p);
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/* any code? */
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if (accp->reason.len>=3 && isdigit((int)p[0])
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&& isdigit((int)p[1]) && isdigit((int)p[2]) ) {
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accp->code = (p[0]-'0')*100 + (p[1]-'0')*10 + (p[2]-'0');
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accp->code_s.s = p;
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accp->code_s.len = 3;
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accp->reason.s += 3;
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for( ; isspace((int)accp->reason.s[0]) ; accp->reason.s++ );
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accp->reason.len = strlen(accp->reason.s);
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}
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*param = (void*)accp;
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#ifdef SQL_ACC
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} else if (param_no == 2) {
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/* only for db acc - the table name */
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if (db_url.s==0) {
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pkg_free(p);
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*param = 0;
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}
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#endif
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}
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return 0;
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}
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static int free_acc_api_fixup(void** param, int param_no)
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{
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if(*param)
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{
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pkg_free(*param);
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*param = 0;
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}
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return 0;
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}
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enum { RA_ACCT_STATUS_TYPE=0, RA_SERVICE_TYPE, RA_SIP_RESPONSE_CODE,
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RA_SIP_METHOD, RA_TIME_STAMP, RA_STATIC_MAX};
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enum {RV_STATUS_START=0, RV_STATUS_STOP, RV_STATUS_ALIVE, RV_STATUS_FAILED,
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RV_SIP_SESSION, RV_STATIC_MAX};
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static struct attr
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rd_attrs[RA_STATIC_MAX+ACC_CORE_LEN-2+MAX_ACC_EXTRA+MAX_ACC_LEG];
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static struct val rd_vals[RV_STATIC_MAX];
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int init_acc_rad(acc_extra_t *leg_info, char *rad_cfg, int srv_type)
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{
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int n;
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memset(rd_attrs, 0, sizeof(rd_attrs));
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memset(rd_vals, 0, sizeof(rd_vals));
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rd_attrs[RA_ACCT_STATUS_TYPE].n = "Acct-Status-Type";
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rd_attrs[RA_SERVICE_TYPE].n = "Service-Type";
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rd_attrs[RA_SIP_RESPONSE_CODE].n = "Sip-Response-Code";
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rd_attrs[RA_SIP_METHOD].n = "Sip-Method";
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rd_attrs[RA_TIME_STAMP].n = "Event-Timestamp";
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n = RA_STATIC_MAX;
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/* caution: keep these aligned to core acc output */
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rd_attrs[n++].n = "Sip-From-Tag";
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rd_attrs[n++].n = "Sip-To-Tag";
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rd_attrs[n++].n = "Acct-Session-Id";
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rd_vals[RV_STATUS_START].n = "Start";
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rd_vals[RV_STATUS_STOP].n = "Stop";
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rd_vals[RV_STATUS_ALIVE].n = "Alive";
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rd_vals[RV_STATUS_FAILED].n = "Failed";
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rd_vals[RV_SIP_SESSION].n = "Sip-Session";
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/* add and count the extras as attributes */
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n += extra2attrs( rad_extra, rd_attrs, n);
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/* add and count the legs as attributes */
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n += extra2attrs( leg_info, rd_attrs, n);
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/* read config */
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if ((rh = rc_read_config(rad_cfg)) == NULL) {
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LM_ERR("failed to open radius config file: %s\n", rad_cfg );
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return -1;
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}
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/* read dictionary */
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if (rc_read_dictionary(rh, rc_conf_str(rh, "dictionary"))!=0) {
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LM_ERR("failed to read radius dictionary\n");
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return -1;
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}
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INIT_AV(rh, rd_attrs, n, rd_vals, RV_STATIC_MAX, "acc", -1, -1);
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if (srv_type != -1)
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rd_vals[RV_SIP_SESSION].v = srv_type;
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return 0;
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}
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int acc_radius_init(acc_init_info_t *inf)
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{
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if (radius_config && radius_config[0]) {
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if (init_acc_rad(inf->leg_info, radius_config, service_type)!=0 ) {
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LM_ERR("failed to init radius\n");
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return -1;
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}
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}
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return 0;
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}
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static inline uint32_t rad_status( struct sip_msg *req, int code )
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{
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str tag;
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unsigned int in_dialog_req = 0;
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tag = get_to(req)->tag_value;
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if(tag.s!=0 && tag.len!=0)
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in_dialog_req = 1;
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if (req->REQ_METHOD==METHOD_INVITE && in_dialog_req == 0
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&& code>=200 && code<300)
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return rd_vals[RV_STATUS_START].v;
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if ((req->REQ_METHOD==METHOD_BYE || req->REQ_METHOD==METHOD_CANCEL))
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return rd_vals[RV_STATUS_STOP].v;
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if (in_dialog_req != 0)
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return rd_vals[RV_STATUS_ALIVE].v;
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return rd_vals[RV_STATUS_FAILED].v;
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}
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#define ADD_RAD_AVPAIR(_attr,_val,_len) \
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do { \
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if (!rc_avpair_add(rh, &send, rd_attrs[_attr].v, _val, _len, 0)) { \
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LM_ERR("failed to add %s, %d\n", rd_attrs[_attr].n, _attr); \
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goto error; \
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} \
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}while(0)
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int acc_radius_send_request(struct sip_msg *req, acc_info_t *inf)
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{
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int attr_cnt;
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VALUE_PAIR *send;
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uint32_t av_type;
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int offset;
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int i;
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int m=0;
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int o=0;
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int rc_result=-1;
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double tsecmicro;
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char smicrosec[18];
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send=NULL;
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attr_cnt = accb.get_core_attrs( req, inf->varr, inf->iarr, inf->tarr );
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/* not interested in the last 2 values */
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attr_cnt -= 2;
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av_type = rad_status( req, inf->env->code); /* RADIUS status */
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ADD_RAD_AVPAIR( RA_ACCT_STATUS_TYPE, &av_type, -1);
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av_type = rd_vals[RV_SIP_SESSION].v; /* session*/
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ADD_RAD_AVPAIR( RA_SERVICE_TYPE, &av_type, -1);
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av_type = (uint32_t)inf->env->code; /* status=integer */
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ADD_RAD_AVPAIR( RA_SIP_RESPONSE_CODE, &av_type, -1);
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av_type = req->REQ_METHOD; /* method */
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ADD_RAD_AVPAIR( RA_SIP_METHOD, &av_type, -1);
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// Event Time Stamp with Microseconds
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if(rad_time_mode==1){
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gettimeofday(&inf->env->tv, NULL);
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tsecmicro=inf->env->tv.tv_sec+((double)inf->env->tv.tv_usec/1000000.0);
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//radius client doesn t support double so convert it
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sprintf(smicrosec,"%17.6f",tsecmicro);
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ADD_RAD_AVPAIR(RA_TIME_STAMP, &smicrosec, -1);
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}else{
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av_type = (uint32_t)inf->env->ts;
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ADD_RAD_AVPAIR(RA_TIME_STAMP, &av_type, -1);
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}
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/* add extra also */
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o = accb.get_extra_attrs(rad_extra, req, inf->varr+attr_cnt,
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inf->iarr+attr_cnt, inf->tarr+attr_cnt);
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attr_cnt += o;
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m = attr_cnt;
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/* add the values for the vector - start from 1 instead of
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* 0 to skip the first value which is the METHOD as string */
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offset = RA_STATIC_MAX-1;
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for( i=1; i<attr_cnt; i++) {
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switch (inf->tarr[i]) {
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case TYPE_STR:
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ADD_RAD_AVPAIR(offset+i, inf->varr[i].s, inf->varr[i].len);
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break;
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case TYPE_INT:
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ADD_RAD_AVPAIR(offset+i, &(inf->iarr[i]), -1);
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break;
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default:
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break;
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}
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}
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/* call-legs attributes also get inserted */
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if ( inf->leg_info ) {
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offset += attr_cnt;
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attr_cnt = accb.get_leg_attrs(inf->leg_info,req,inf->varr,inf->iarr,inf->tarr,1);
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do {
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for (i=0; i<attr_cnt; i++)
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ADD_RAD_AVPAIR( offset+i, inf->varr[i].s, inf->varr[i].len );
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}while ( (attr_cnt=accb.get_leg_attrs(inf->leg_info,req,inf->varr,inf->iarr,
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inf->tarr, 0))!=0 );
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}
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rc_result=rc_acct(rh, SIP_PORT, send);
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if (rc_result==ERROR_RC) {
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LM_ERR("Radius accounting - ERROR - \n");
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goto error;
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}else if(rc_result==BADRESP_RC){
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LM_ERR("Radius accounting - BAD RESPONSE \n");
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goto error;
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}else if(rc_result==TIMEOUT_RC){
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LM_ERR("Radius accounting - TIMEOUT \n");
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goto error;
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}else if(rc_result==REJECT_RC){
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LM_ERR("Radius accounting - REJECTED \n");
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goto error;
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}else if(rc_result==OK_RC){
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LM_DBG("Radius accounting - OK \n");
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}else{
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LM_ERR("Radius accounting - Unkown response \n");
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goto error;
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}
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rc_avpair_free(send);
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/* free memory allocated by extra2strar */
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free_strar_mem( &(inf->tarr[m-o]), &(inf->varr[m-o]), o, m);
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return 1;
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error:
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rc_avpair_free(send);
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/* free memory allocated by extra2strar */
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free_strar_mem( &(inf->tarr[m-o]), &(inf->varr[m-o]), o, m);
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return -1;
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}
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/*! \brief extra name is moved as string part of an attribute; str.len will contain an
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* index to the corresponding attribute
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*/
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int extra2attrs(struct acc_extra *extra, struct attr *attrs, int offset)
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{
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int i;
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for(i=0 ; extra ; i++, extra=extra->next) {
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attrs[offset+i].n = extra->name.s;
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}
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return i;
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}
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/**
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*
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*/
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static int w_acc_radius_request(struct sip_msg *rq, char *comment, char *foo)
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{
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return accb.exec(rq, &_acc_radius_engine, (acc_param_t*)comment);
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}
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