acc.c

Go to the documentation of this file.

/*
 * $Id$
 *
 * Copyright (C) 2001-2003 FhG Fokus
 * Copyright (C) 2006 Voice Sistem SRL
 * Copyright (C) 2008 Juha Heinanen
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * History:
 * --------
 * 2003-04-04  grand acc cleanup (jiri)
 * 2003-11-04  multidomain support for mysql introduced (jiri)
 * 2004-06-06  updated to the new DB api, cleanup: acc_db_{bind, init,close)
 *              added (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,
 *             code cleanup for low level functions (bogdan)
 * 2006-09-19  final stage of a masive re-structuring and cleanup (bogdan)
 * 2008-09-03  added support for integer type Radius attributes (jh)
 */

#include <stdio.h>
#include <time.h>

#include "../../dprint.h"
#include "../../error.h"
#include "../../mem/mem.h"
#include "../../usr_avp.h"
#include "../../lib/srdb1/db.h"
#include "../../parser/hf.h"
#include "../../parser/msg_parser.h"
#include "../../parser/parse_from.h"
#include "../../parser/digest/digest.h"
#include "../../modules/tm/t_funcs.h"
#include "acc_mod.h"
#include "acc.h"
#include "acc_extra.h"
#include "acc_logic.h"
#include "acc_api.h"

#ifdef RAD_ACC
#include "../../lib/kcore/radius.h"
#endif

#ifdef DIAM_ACC
#include "diam_dict.h"
#include "diam_message.h"
#include "diam_tcp.h"
#endif

extern struct acc_extra *log_extra;
extern struct acc_extra *leg_info;
extern struct acc_enviroment acc_env;

#ifdef RAD_ACC
extern struct acc_extra *rad_extra;
#endif

#ifdef DIAM_ACC
extern char *diameter_client_host;
extern int diameter_client_port;
extern struct acc_extra *dia_extra;
#endif

#ifdef SQL_ACC
static db_func_t acc_dbf;
static db1_con_t* db_handle=0;
extern struct acc_extra *db_extra;
extern int acc_db_insert_mode;
#endif

/* arrays used to collect the values before being
 * pushed to the storage backend (whatever used) */
static str val_arr[ACC_CORE_LEN+MAX_ACC_EXTRA+MAX_ACC_LEG];
static int int_arr[ACC_CORE_LEN+MAX_ACC_EXTRA+MAX_ACC_LEG];
static char type_arr[ACC_CORE_LEN+MAX_ACC_EXTRA+MAX_ACC_LEG];

/********************************************
 *        acc CORE function
 ********************************************/
#define get_ft_body( _ft_hdr) \
        ((struct to_body*)_ft_hdr->parsed)

#define SET_EMPTY_VAL(_i) \
        do { \
                c_vals[_i].s = 0; \
                c_vals[_i].len = 0; \
        } while(0)

/* returns:
 *              method name
 *              from TAG
 *              to TAG
 *              callid
 *              sip_code
 *              sip_status
 *              */
int core2strar(struct sip_msg *req, str *c_vals, int *i_vals, char *t_vals)
{
        struct to_body *ft_body;
        struct hdr_field *from;
        struct hdr_field *to;

        /* method : request/reply - cseq parsed in acc_preparse_req() */
        c_vals[0] = get_cseq(req)->method;
        t_vals[0] = TYPE_STR;

        /* from/to URI and TAG */
        if (req->msg_flags&FL_REQ_UPSTREAM) {
                LM_DBG("the flag UPSTREAM is set -> swap F/T\n"); \
                from = acc_env.to;
                to = req->from;
        } else {
                from = req->from;
                to = acc_env.to;
        }

        if (from && (ft_body=get_ft_body(from)) && ft_body->tag_value.len) {
                c_vals[1] = ft_body->tag_value;
                t_vals[1] = TYPE_STR;
        } else {
                SET_EMPTY_VAL(1);
                t_vals[1] = TYPE_NULL;
        }

        if (to && (ft_body=get_ft_body(to)) && ft_body->tag_value.len) {
                c_vals[2] = ft_body->tag_value;
                t_vals[2] = TYPE_STR;
        } else {
                SET_EMPTY_VAL(2);
                t_vals[2] = TYPE_NULL;
        }

        /* Callid */
        if (req->callid && req->callid->body.len) {
                c_vals[3] = req->callid->body;
                t_vals[3] = TYPE_STR;
        } else {
                SET_EMPTY_VAL(3);
                t_vals[3] = TYPE_NULL;
        }

        /* SIP code */
        c_vals[4] = acc_env.code_s;
        i_vals[4] = acc_env.code;
        t_vals[4] = TYPE_INT;

        /* SIP status */
        c_vals[5] = acc_env.reason;
        t_vals[5] = TYPE_STR;

        acc_env.ts = time(NULL);
        return ACC_CORE_LEN;
}



/********************************************
 *        LOG  ACCOUNTING
 ********************************************/
static str log_attrs[ACC_CORE_LEN+MAX_ACC_EXTRA+MAX_ACC_LEG];

#define SET_LOG_ATTR(_n,_atr)  \
        do { \
                log_attrs[_n].s=A_##_atr; \
                log_attrs[_n].len=A_##_atr##_LEN; \
                n++; \
        } while(0)

void acc_log_init(void)
{
        struct acc_extra *extra;
        int n;

        n = 0;

        /* fixed core attributes */
        SET_LOG_ATTR(n,METHOD);
        SET_LOG_ATTR(n,FROMTAG);
        SET_LOG_ATTR(n,TOTAG);
        SET_LOG_ATTR(n,CALLID);
        SET_LOG_ATTR(n,CODE);
        SET_LOG_ATTR(n,STATUS);

        /* init the extra db keys */
        for(extra=log_extra; extra ; extra=extra->next)
                log_attrs[n++] = extra->name;

        /* multi leg call columns */
        for( extra=leg_info ; extra ; extra=extra->next)
                log_attrs[n++] = extra->name;
}


int acc_log_request( struct sip_msg *rq)
{
        static char log_msg[MAX_SYSLOG_SIZE];
        static char *log_msg_end=log_msg+MAX_SYSLOG_SIZE-2;
        char *p;
        int n;
        int m;
        int i;

        /* get default values */
        m = core2strar( rq, val_arr, int_arr, type_arr);

        /* get extra values */
        m += extra2strar( log_extra, rq, val_arr+m, int_arr+m, type_arr+m);

        for ( i=0,p=log_msg ; i<m ; i++ ) {
                if (p+1+log_attrs[i].len+1+val_arr[i].len >= log_msg_end) {
                        LM_WARN("acc message too long, truncating..\n");
                        p = log_msg_end;
                        break;
                }
                *(p++) = A_SEPARATOR_CHR;
                memcpy(p, log_attrs[i].s, log_attrs[i].len);
                p += log_attrs[i].len;
                *(p++) = A_EQ_CHR;
                memcpy(p, val_arr[i].s, val_arr[i].len);
                p += val_arr[i].len;
        }

        /* get per leg attributes */
        if ( leg_info ) {
                n = legs2strar(leg_info,rq,val_arr+m,int_arr+m,type_arr+m, 1);
                do {
                        for (i=m; i<m+n; i++) {
                                if (p+1+log_attrs[i].len+1+val_arr[i].len >= log_msg_end) {
                                        LM_WARN("acc message too long, truncating..\n");
                                        p = log_msg_end;
                                        break;
                                }
                                *(p++) = A_SEPARATOR_CHR;
                                memcpy(p, log_attrs[i].s, log_attrs[i].len);
                                p += log_attrs[i].len;
                                *(p++) = A_EQ_CHR;
                                memcpy(p, val_arr[i].s, val_arr[i].len);
                                p += val_arr[i].len;
                        }
                }while (p!=log_msg_end && (n=legs2strar(leg_info,rq,val_arr+m,
                                                        int_arr+m,type_arr+m,
                                                        0))!=0);
        }

        /* terminating line */
        *(p++) = '\n';
        *(p++) = 0;

        LM_GEN2(log_facility, log_level, "%.*stimestamp=%lu%s",
                acc_env.text.len, acc_env.text.s,(unsigned long) acc_env.ts, log_msg);

        return 1;
}


/********************************************
 *        SQL  ACCOUNTING
 ********************************************/

#ifdef SQL_ACC

/* caution: keys need to be aligned to core format */
static db_key_t db_keys[ACC_CORE_LEN+1+MAX_ACC_EXTRA+MAX_ACC_LEG];
static db_val_t db_vals[ACC_CORE_LEN+1+MAX_ACC_EXTRA+MAX_ACC_LEG];


static void acc_db_init_keys(void)
{
        struct acc_extra *extra;
        int time_idx;
        int i;
        int n;

        /* init the static db keys */
        n = 0;
        /* caution: keys need to be aligned to core format */
        db_keys[n++] = &acc_method_col;
        db_keys[n++] = &acc_fromtag_col;
        db_keys[n++] = &acc_totag_col;
        db_keys[n++] = &acc_callid_col;
        db_keys[n++] = &acc_sipcode_col;
        db_keys[n++] = &acc_sipreason_col;
        db_keys[n++] = &acc_time_col;
        time_idx = n-1;

        /* init the extra db keys */
        for(extra=db_extra; extra ; extra=extra->next)
                db_keys[n++] = &extra->name;

        /* multi leg call columns */
        for( extra=leg_info ; extra ; extra=extra->next)
                db_keys[n++] = &extra->name;

        /* init the values */
        for(i=0; i<n; i++) {
                VAL_TYPE(db_vals+i)=DB1_STR;
                VAL_NULL(db_vals+i)=0;
        }
        VAL_TYPE(db_vals+time_idx)=DB1_DATETIME;
}


/* binds to the corresponding database module
 * returns 0 on success, -1 on error */
int acc_db_init(const str* db_url)
{
        if (db_bind_mod(db_url, &acc_dbf)<0){
                LM_ERR("bind_db failed\n");
                return -1;
        }

        /* Check database capabilities */
        if (!DB_CAPABILITY(acc_dbf, DB_CAP_INSERT)) {
                LM_ERR("database module does not implement insert function\n");
                return -1;
        }

        acc_db_init_keys();

        return 0;
}


/* initialize the database connection
 * returns 0 on success, -1 on error */
int acc_db_init_child(const str *db_url)
{
        db_handle=acc_dbf.init(db_url);
        if (db_handle==0){
                LM_ERR("unable to connect to the database\n");
                return -1;
        }
        return 0;
}


/* close a db connection */
void acc_db_close(void)
{
        if (db_handle && acc_dbf.close)
                acc_dbf.close(db_handle);
}


int acc_db_request( struct sip_msg *rq)
{
        int m;
        int n;
        int i;

        /* formated database columns */
        m = core2strar( rq, val_arr, int_arr, type_arr );

        for(i=0; i<m; i++)
                VAL_STR(db_vals+i) = val_arr[i];
        /* time value */
        VAL_TIME(db_vals+(m++)) = acc_env.ts;

        /* extra columns */
        m += extra2strar( db_extra, rq, val_arr+m, int_arr+m, type_arr+m);

        for( i++ ; i<m; i++)
                VAL_STR(db_vals+i) = val_arr[i];

        if (acc_dbf.use_table(db_handle, &acc_env.text/*table*/) < 0) {
                LM_ERR("error in use_table\n");
                return -1;
        }

        /* multi-leg columns */
        if ( !leg_info ) {
                if(acc_db_insert_mode==1 && acc_dbf.insert_delayed!=NULL) {
                        if (acc_dbf.insert_delayed(db_handle, db_keys, db_vals, m) < 0) {
                                LM_ERR("failed to insert delayed into database\n");
                                return -1;
                        }
                } else {
                        if (acc_dbf.insert(db_handle, db_keys, db_vals, m) < 0) {
                                LM_ERR("failed to insert into database\n");
                                return -1;
                        }
                }
        } else {
                n = legs2strar(leg_info,rq,val_arr+m,int_arr+m,type_arr+m,1);
                do {
                        for (i=m; i<m+n; i++)
                                VAL_STR(db_vals+i)=val_arr[i];
                        if(acc_db_insert_mode==1 && acc_dbf.insert_delayed!=NULL) {
                                if(acc_dbf.insert_delayed(db_handle,db_keys,db_vals,m+n)<0) {
                                        LM_ERR("failed to insert delayed into database\n");
                                        return -1;
                                }
                        } else {
                                if (acc_dbf.insert(db_handle, db_keys, db_vals, m+n) < 0) {
                                        LM_ERR("failed to insert into database\n");
                                        return -1;
                                }
                        }
                }while ( (n=legs2strar(leg_info,rq,val_arr+m,int_arr+m,
                                       type_arr+m,0))!=0 );
        }

        return 1;
}

#endif


/************ RADIUS & DIAMETER helper functions **************/
#if defined(RAD_ACC) || defined (DIAM_ACC)
#ifndef UINT4
#define UINT4 uint32_t
#endif
inline static UINT4 phrase2code(str *phrase)
{
        UINT4 code;
        int i;

        if (phrase->len<3) return 0;
        code=0;
        for (i=0;i<3;i++) {
                if (!(phrase->s[i]>='0' && phrase->s[i]<'9'))
                                return 0;
                code=code*10+phrase->s[i]-'0';
        }
        return code;
}
#endif


/********************************************
 *        RADIUS  ACCOUNTING
 ********************************************/
#ifdef RAD_ACC
enum { RA_ACCT_STATUS_TYPE=0, RA_SERVICE_TYPE, RA_SIP_RESPONSE_CODE,
        RA_SIP_METHOD, RA_TIME_STAMP, RA_STATIC_MAX};
enum {RV_STATUS_START=0, RV_STATUS_STOP, RV_STATUS_ALIVE, RV_STATUS_FAILED,
        RV_SIP_SESSION, RV_STATIC_MAX};
static struct attr
        rd_attrs[RA_STATIC_MAX+ACC_CORE_LEN-2+MAX_ACC_EXTRA+MAX_ACC_LEG];
static struct val rd_vals[RV_STATIC_MAX];

int init_acc_rad(char *rad_cfg, int srv_type)
{
        int n;

        memset(rd_attrs, 0, sizeof(rd_attrs));
        memset(rd_vals, 0, sizeof(rd_vals));
        rd_attrs[RA_ACCT_STATUS_TYPE].n  = "Acct-Status-Type";
        rd_attrs[RA_SERVICE_TYPE].n      = "Service-Type";
        rd_attrs[RA_SIP_RESPONSE_CODE].n = "Sip-Response-Code";
        rd_attrs[RA_SIP_METHOD].n        = "Sip-Method";
        rd_attrs[RA_TIME_STAMP].n        = "Event-Timestamp";
        n = RA_STATIC_MAX;
        /* caution: keep these aligned to core acc output */
        rd_attrs[n++].n                  = "Sip-From-Tag";
        rd_attrs[n++].n                  = "Sip-To-Tag";
        rd_attrs[n++].n                  = "Acct-Session-Id";

        rd_vals[RV_STATUS_START].n        = "Start";
        rd_vals[RV_STATUS_STOP].n         = "Stop";
        rd_vals[RV_STATUS_ALIVE].n        = "Alive";
        rd_vals[RV_STATUS_FAILED].n       = "Failed";
        rd_vals[RV_SIP_SESSION].n         = "Sip-Session";

        /* add and count the extras as attributes */
        n += extra2attrs( rad_extra, rd_attrs, n);
        /* add and count the legs as attributes */
        n += extra2attrs( leg_info, rd_attrs, n);

        /* read config */
        if ((rh = rc_read_config(rad_cfg)) == NULL) {
                LM_ERR("failed to open radius config file: %s\n", rad_cfg );
                return -1;
        }
        /* read dictionary */
        if (rc_read_dictionary(rh, rc_conf_str(rh, "dictionary"))!=0) {
                LM_ERR("failed to read radius dictionary\n");
                return -1;
        }

        INIT_AV(rh, rd_attrs, n, rd_vals, RV_STATIC_MAX, "acc", -1, -1);

        if (srv_type != -1)
                rd_vals[RV_SIP_SESSION].v = srv_type;

        return 0;
}


static inline UINT4 rad_status( struct sip_msg *req, int code )
{
        str tag;
        unsigned int in_dialog_req = 0;

        tag = get_to(req)->tag_value;
        if(tag.s!=0 && tag.len!=0)
                in_dialog_req = 1;

        if (req->REQ_METHOD==METHOD_INVITE && in_dialog_req == 0
                    && code>=200 && code<300)
                return rd_vals[RV_STATUS_START].v;
        if ((req->REQ_METHOD==METHOD_BYE || req->REQ_METHOD==METHOD_CANCEL))
                return rd_vals[RV_STATUS_STOP].v;
        if (in_dialog_req != 0)
                return rd_vals[RV_STATUS_ALIVE].v;
        return rd_vals[RV_STATUS_FAILED].v;
 }

#define ADD_RAD_AVPAIR(_attr,_val,_len)         \
    do {                                                                \
        if (!rc_avpair_add(rh, &send, rd_attrs[_attr].v, _val, _len, 0)) { \
            LM_ERR("failed to add %s, %d\n", rd_attrs[_attr].n, _attr); \
            goto error;                                                 \
        } \
    }while(0)

int acc_rad_request( struct sip_msg *req )
{
        int attr_cnt;
        VALUE_PAIR *send;
        UINT4 av_type;
        int offset;
        int i;

        send=NULL;

        attr_cnt = core2strar( req, val_arr, int_arr, type_arr );
        /* not interested in the last 2 values */
        attr_cnt -= 2;

        av_type = rad_status( req, acc_env.code); /* RADIUS status */
        ADD_RAD_AVPAIR( RA_ACCT_STATUS_TYPE, &av_type, -1);

        av_type = rd_vals[RV_SIP_SESSION].v; /* session*/
        ADD_RAD_AVPAIR( RA_SERVICE_TYPE, &av_type, -1);

        av_type = (UINT4)acc_env.code; /* status=integer */
        ADD_RAD_AVPAIR( RA_SIP_RESPONSE_CODE, &av_type, -1);

        av_type = req->REQ_METHOD; /* method */
        ADD_RAD_AVPAIR( RA_SIP_METHOD, &av_type, -1);

        /* unix time */
        av_type = (UINT4)acc_env.ts;
        ADD_RAD_AVPAIR( RA_TIME_STAMP, &av_type, -1);

        /* add extra also */
        attr_cnt += extra2strar(rad_extra, req, val_arr+attr_cnt,
                                int_arr+attr_cnt, type_arr+attr_cnt);

        /* add the values for the vector - start from 1 instead of
         * 0 to skip the first value which is the METHOD as string */
        offset = RA_STATIC_MAX-1;
        for( i=1; i<attr_cnt; i++) {
            switch (type_arr[i]) {
            case TYPE_STR:
                ADD_RAD_AVPAIR(offset+i, val_arr[i].s, val_arr[i].len);
                break;
            case TYPE_INT:
                ADD_RAD_AVPAIR(offset+i, &(int_arr[i]), -1);
                break;
            default:
                break;
            }
        }

        /* call-legs attributes also get inserted */
        if ( leg_info ) {
                offset += attr_cnt;
                attr_cnt = legs2strar(leg_info,req,val_arr,int_arr,type_arr,1);
                do {
                        for (i=0; i<attr_cnt; i++)
                                ADD_RAD_AVPAIR( offset+i, val_arr[i].s, val_arr[i].len );
                }while ( (attr_cnt=legs2strar(leg_info,req,val_arr,int_arr,
                                              type_arr, 0))!=0 );
        }

        if (rc_acct(rh, SIP_PORT, send)!=OK_RC) {
                LM_ERR("radius-ing failed\n");
                goto error;
        }
        rc_avpair_free(send);
        return 1;

error:
        rc_avpair_free(send);
        return -1;
}

#endif


/********************************************
 *        DIAMETER  ACCOUNTING
 ********************************************/
#ifdef DIAM_ACC

#define AA_REQUEST 265
#define AA_ANSWER  265

#define ACCOUNTING_REQUEST 271
#define ACCOUNTING_ANSWER  271

static int diam_attrs[ACC_CORE_LEN+MAX_ACC_EXTRA+MAX_ACC_LEG];

int acc_diam_init()
{
        int n;
        int m;

        n = 0;
        /* caution: keep these aligned to core acc output */
        diam_attrs[n++] = AVP_SIP_METHOD;
        diam_attrs[n++] = AVP_SIP_FROM_TAG;
        diam_attrs[n++] = AVP_SIP_TO_TAG;
        diam_attrs[n++] = AVP_SIP_CALLID;
        diam_attrs[n++] = AVP_SIP_STATUS;

        m = extra2int( dia_extra, diam_attrs+n);
        if (m<0) {
                LM_ERR("extra names for DIAMETER must be integer AVP codes\n");
                return -1;
        }
        n += m;

        m = extra2int( leg_info, diam_attrs+n);
        if (m<0) {
                LM_ERR("leg info names for DIAMTER must be integer AVP codes\n");
                return -1;
        }
        n += m;

        return 0;
}


inline unsigned long diam_status(struct sip_msg *rq, int code)
{
        if ((rq->REQ_METHOD==METHOD_INVITE || rq->REQ_METHOD==METHOD_ACK)
                                && code>=200 && code<300) 
                return AAA_ACCT_START;

        if ((rq->REQ_METHOD==METHOD_BYE || rq->REQ_METHOD==METHOD_CANCEL))
                return AAA_ACCT_STOP;

        if (code>=200 && code <=300)  
                return AAA_ACCT_EVENT;

        return -1;
}


int acc_diam_request( struct sip_msg *req )
{
        int attr_cnt;
        int cnt;
        AAAMessage *send = NULL;
        AAA_AVP *avp;
        struct sip_uri puri;
        str *uri;
        int ret;
        int i;
        int status;
        char tmp[2];
        unsigned int mid;

        attr_cnt = core2strar( req, val_arr, int_arr, type_arr );
        /* last value is not used */
        attr_cnt--;

        if ( (send=AAAInMessage(ACCOUNTING_REQUEST, AAA_APP_NASREQ))==NULL) {
                LM_ERR("failed to create new AAA request\n");
                return -1;
        }

        /* AVP_ACCOUNTIG_RECORD_TYPE */
        if( (status = diam_status(req, acc_env.code))<0) {
                LM_ERR("status unknown\n");
                goto error;
        }
        tmp[0] = status+'0';
        tmp[1] = 0;
        if( (avp=AAACreateAVP(AVP_Accounting_Record_Type, 0, 0, tmp,
        1, AVP_DUPLICATE_DATA)) == 0) {
                LM_ERR("failed to create AVP:no more free memory!\n");
                goto error;
        }
        if( AAAAddAVPToMessage(send, avp, 0)!= AAA_ERR_SUCCESS) {
                LM_ERR("avp not added \n");
                AAAFreeAVP(&avp);
                goto error;
        }
        /* SIP_MSGID AVP */
        mid = req->id;
        if( (avp=AAACreateAVP(AVP_SIP_MSGID, 0, 0, (char*)(&mid), 
        sizeof(mid), AVP_DUPLICATE_DATA)) == 0) {
                LM_ERR("failed to create AVP:no more free memory!\n");
                goto error;
        }
        if( AAAAddAVPToMessage(send, avp, 0)!= AAA_ERR_SUCCESS) {
                LM_ERR("avp not added \n");
                AAAFreeAVP(&avp);
                goto error;
        }

        /* SIP Service AVP */
        if( (avp=AAACreateAVP(AVP_Service_Type, 0, 0, SIP_ACCOUNTING, 
        SERVICE_LEN, AVP_DUPLICATE_DATA)) == 0) {
                LM_ERR("failed to create AVP:no more free memory!\n");
                goto error;
        }
        if( AAAAddAVPToMessage(send, avp, 0)!= AAA_ERR_SUCCESS) {
                LM_ERR("avp not added \n");
                AAAFreeAVP(&avp);
                goto error;
        }

        /* also the extra attributes */
        attr_cnt += extra2strar( dia_extra, req, val_arr, int_arr, type_arr);

        /* add attributes */
        for(i=0; i<attr_cnt; i++) {
                if((avp=AAACreateAVP(diam_attrs[i], 0,0, val_arr[i].s, val_arr[i].len,
                AVP_DUPLICATE_DATA)) == 0) {
                        LM_ERR("failed to create AVP: no more free memory!\n");
                        goto error;
                }
                if( AAAAddAVPToMessage(send, avp, 0)!= AAA_ERR_SUCCESS) {
                        LM_ERR("avp not added \n");
                        AAAFreeAVP(&avp);
                        goto error;
                }
        }

        /* and the leg attributes */
        if ( leg_info ) {
                cnt = legs2strar(leg_info,req,val_arr,int_arr,type_arr,1);
                do {
                        for (i=0; i<cnt; i++) {
                                if((avp=AAACreateAVP(diam_attrs[attr_cnt+i], 0, 0,
                                val_arr[i].s, val_arr[i].len, AVP_DUPLICATE_DATA)) == 0) {
                                        LM_ERR("failed to create AVP: no more free memory!\n");
                                        goto error;
                                }
                                if( AAAAddAVPToMessage(send, avp, 0)!= AAA_ERR_SUCCESS) {
                                        LM_ERR("avp not added \n");
                                        AAAFreeAVP(&avp);
                                        goto error;
                                }
                        }
                } while ( (cnt=legs2strar(leg_info,req,val_arr,int_arr,
                                          type_arr,0))!=0 );
        }

        if (get_uri(req, &uri) < 0) {
                LM_ERR("failed to get uri, From/To URI not found\n");
                goto error;
        }

        if (parse_uri(uri->s, uri->len, &puri) < 0) {
                LM_ERR("failed to parse From/To URI\n");
                goto error;
        }

        /* Destination-Realm AVP */
        if( (avp=AAACreateAVP(AVP_Destination_Realm, 0, 0, puri.host.s,
        puri.host.len, AVP_DUPLICATE_DATA)) == 0) {
                LM_ERR("failed to create AVP:no more free memory!\n");
                goto error;
        }

        if( AAAAddAVPToMessage(send, avp, 0)!= AAA_ERR_SUCCESS) {
                LM_ERR("avp not added \n");
                AAAFreeAVP(&avp);
                goto error;
        }

        /* prepare the message to be sent over the network */
        if(AAABuildMsgBuffer(send) != AAA_ERR_SUCCESS) {
                LM_ERR("message buffer not created\n");
                goto error;
        }

        if(sockfd==AAA_NO_CONNECTION) {
                sockfd = init_mytcp(diameter_client_host, diameter_client_port);
                if(sockfd==AAA_NO_CONNECTION) {
                        LM_ERR("failed to reconnect to Diameter client\n");
                        goto error;
                }
        }

        /* send the message to the DIAMETER client */
        ret = tcp_send_recv(sockfd, send->buf.s, send->buf.len, rb, req->id);
        if(ret == AAA_CONN_CLOSED) {
                LM_NOTICE("connection to Diameter client closed.It will be "
                                "reopened by the next request\n");
                close(sockfd);
                sockfd = AAA_NO_CONNECTION;
                goto error;
        }

        if(ret != ACC_SUCCESS) {
                /* a transmission error occurred */
                LM_ERR("message sending to the DIAMETER backend authorization "
                                "server failed\n");
                goto error;
        }

        AAAFreeMessage(&send);
        return 1;

error:
        AAAFreeMessage(&send);
        return -1;
}

#endif

int acc_run_engines(struct sip_msg *msg, int type, int *reset)
{
        acc_info_t inf;
        acc_engine_t *e;

        e = acc_api_get_engines();

        if(e==NULL)
                return 0;

        memset(&inf, 0, sizeof(acc_info_t));
        inf.env  = &acc_env;
        inf.varr = val_arr;
        inf.iarr = int_arr;
        inf.tarr = type_arr;
        inf.leg_info = leg_info;
        while(e) {
                if(e->flags & 1) {
                        if((type==0) && (msg->flags&(e->acc_flag))) {
                                LM_DBG("acc event for engine: %s\n", e->name);
                                e->acc_req(msg, &inf);
                                if(reset) *reset |= e->acc_flag;
                        }
                        if((type==1) && (msg->flags&(e->missed_flag))) {
                                LM_DBG("missed event for engine: %s\n", e->name);
                                e->acc_req(msg, &inf);
                                if(reset) *reset |= e->missed_flag;
                        }
                }
                e = e->next;
        }
        return 0;
}

void acc_api_set_arrays(acc_info_t *inf)
{
        inf->varr = val_arr;
        inf->iarr = int_arr;
        inf->tarr = type_arr;
        inf->leg_info = leg_info;
}