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pvar.c
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/**
* Copyright (C) 2010-2016 OpenSIPS Solutions
* Copyright (C) 2005-2009 Voice Sistem SRL
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of opensips, a free SIP server.
*
* opensips 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
*
* opensips 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:
* --------
* 2004-10-20 - added header name specifier (ramona)
* 2005-06-14 - added avp name specifier (ramona)
* 2005-06-18 - added color printing support via escape sequesnces
* contributed by Ingo Flaschberger (daniel)
* 2005-06-22 - created this file from modules/xlog/pv_lib.c (daniel)
* 2009-04-28 - $ct and $ct.fields() PVs added (bogdan)
* 2009-05-02 - $branch() added, $br, $bR, $bf, $bF removed (bogdan)
*/
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#include <unistd.h>
#include "dprint.h"
#include "mem/mem.h"
#include "mem/shm_mem.h"
#include "ut.h"
#include "trim.h"
#include "dset.h"
#include "action.h"
#include "socket_info.h"
#include "route_struct.h"
#include "usr_avp.h"
#include "errinfo.h"
#include "transformations.h"
#include "script_var.h"
#include "pvar.h"
#include "flags.h"
#include "xlog.h"
#include "parser/parse_from.h"
#include "parser/parse_uri.h"
#include "parser/parse_hname2.h"
#include "parser/parse_content.h"
#include "parser/parse_refer_to.h"
#include "parser/parse_rpid.h"
#include "parser/parse_diversion.h"
#include "parser/parse_ppi.h"
#include "parser/parse_pai.h"
#include "parser/digest/digest.h"
#include "parser/contact/parse_contact.h"
#define is_in_str(p, in) (p<in->s+in->len && *p)
extern int curr_action_line;
extern char *curr_action_file;
typedef struct _pv_extra
{
pv_export_t pve;
struct _pv_extra *next;
} pv_extra_t, *pv_extra_p;
pv_extra_p *_pv_extra_list=0;
static str str_marker = { PV_MARKER_STR, 1 };
/* IMPORTANT : the "const" strings returned by the var functions must
be read-write (as they may be changed by the script interpreter), so
we need to allocated as array and not as pointing to RO data segment
*/
static char _str_null_hlp[7] = {'<','n','u','l','l','>',0};
static str str_null = { _str_null_hlp, 6 };
static char _str_empty_hlp[1] = { 0 };
static str str_empty = { _str_empty_hlp, 0 };
static char _str_request_route_hlp[] = {'r','e','q','u','e','s','t','_','r','o','u','t','e',0};
static str str_request_route = { _str_request_route_hlp, 13 };
static char _str_failure_route_hlp[] = {'f','a','i','l','u','r','e','_','r','o','u','t','e',0};
static str str_failure_route = { _str_failure_route_hlp, 13 };
static char _str_onreply_route_hlp[] = {'o','n','r','e','p','l','y','_','r','o','u','t','e',0};
static str str_onreply_route = { _str_onreply_route_hlp, 13 };
static char _str_branch_route_hlp[] = {'b','r','a','n','c','h','_','r','o','u','t','e',0};
static str str_branch_route = { _str_branch_route_hlp, 12 };
static char _str_error_route_hlp[] = {'e','r','r','o','r','_','r','o','u','t','e',0};
static str str_error_route = { _str_error_route_hlp, 11 };
static char _str_local_route_hlp[] = {'l','o','c','a','l','_','r','o','u','t','e',0};
static str str_local_route = { _str_local_route_hlp, 11 };
static char _str_startup_route_hlp[] = {'s','t','a','r','t','u','p','_','r','o','u','t','e',0};
static str str_startup_route = { _str_startup_route_hlp, 13 };
static char _str_timer_route_hlp[] = {'t','i','m','e','r','_','r','o','u','t','e',0};
static str str_timer_route = { _str_timer_route_hlp, 11 };
static char _str_event_route_hlp[] = {'e','v','e','n','t','_','r','o','u','t','e',0};
static str str_event_route = { _str_event_route_hlp, 11 };
int _pv_pid = 0;
#define PV_FIELD_DELIM ", "
#define PV_FIELD_DELIM_LEN (sizeof(PV_FIELD_DELIM) - 1)
#define PV_LOCAL_BUF_SIZE 511
static char pv_local_buf[PV_LOCAL_BUF_SIZE+1];
/* pv context list */
pv_context_t* pv_context_lst = NULL;
pv_context_t* pv_get_context(str* name);
pv_context_t* add_pv_context(str* name, pv_contextf_t get_context);
static int pvc_before_check = 1;
/* route param variable */
static int pv_get_param(struct sip_msg *msg, pv_param_t *ip, pv_value_t *res);
static int pv_parse_param_name(pv_spec_p sp, str *in);
/********** helper functions ********/
/**
* convert unsigned int to pv_value_t
*/
int pv_get_uintval(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res, unsigned int uival)
{
int l = 0;
char *ch = NULL;
if(res==NULL)
return -1;
ch = int2str(uival, &l);
res->rs.s = ch;
res->rs.len = l;
res->ri = (int)uival;
res->flags = PV_VAL_STR|PV_VAL_INT|PV_TYPE_INT;
return 0;
}
/**
* convert signed int to pv_value_t
*/
int pv_get_sintval(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res, int sival)
{
int l = 0;
char *ch = NULL;
if(res==NULL)
return -1;
ch = sint2str(sival, &l);
res->rs.s = ch;
res->rs.len = l;
res->ri = sival;
res->flags = PV_VAL_STR|PV_VAL_INT|PV_TYPE_INT;
return 0;
}
/**
* convert str to pv_value_t
*/
int pv_get_strval(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res, str *sval)
{
if(res==NULL)
return -1;
res->rs = *sval;
res->flags = PV_VAL_STR;
return 0;
}
/**
* convert str-int to pv_value_t (type is str)
*/
int pv_get_strintval(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res, str *sval, int ival)
{
if(res==NULL)
return -1;
res->rs = *sval;
res->ri = ival;
res->flags = PV_VAL_STR|PV_VAL_INT;
return 0;
}
/**
* convert int-str to pv_value_t (type is int)
*/
int pv_get_intstrval(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res, int ival, str *sval)
{
if(res==NULL)
return -1;
res->rs = *sval;
res->ri = ival;
res->flags = PV_VAL_STR|PV_VAL_INT|PV_TYPE_INT;
return 0;
}
/************************************************************/
static int pv_get_marker(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
return pv_get_strintval(msg, param, res, &str_marker, (int)str_marker.s[0]);
}
int pv_get_null(struct sip_msg *msg, pv_param_t *param, pv_value_t *res)
{
if(res==NULL)
return -1;
res->rs = str_empty;
res->ri = 0;
res->flags = PV_VAL_NULL;
return 0;
}
/************************************************************/
static int pv_get_pid(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(_pv_pid == 0)
_pv_pid = (int)getpid();
return pv_get_sintval(msg, param, res, _pv_pid);
}
extern int return_code;
static int pv_get_return_code(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
return pv_get_sintval(msg, param, res, return_code);
}
static int pv_get_times(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
return pv_get_uintval(msg, param, res, (unsigned int)time(NULL));
}
static int pv_get_timem(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
struct timeval TP;
if(msg==NULL)
return -1;
gettimeofday(&TP, NULL);
return pv_get_uintval(msg, param, res, (unsigned int)TP.tv_usec);
}
static int pv_get_start_times(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
return pv_get_uintval(msg, param, res, (unsigned int)startup_time);
}
static int pv_parse_time_name(pv_spec_p sp, str *in)
{
sp->pvp.pvn.type = PV_NAME_INTSTR;
sp->pvp.pvn.u.isname.type = AVP_NAME_STR;
sp->pvp.pvn.u.isname.name.s.s = pkg_malloc(in->len + 1);
if (sp->pvp.pvn.u.isname.name.s.s==NULL) {
LM_ERR("failed to allocated private mem\n");
return -1;
}
memcpy(sp->pvp.pvn.u.isname.name.s.s, in->s, in->len);
sp->pvp.pvn.u.isname.name.s.s[in->len] = 0;
sp->pvp.pvn.u.isname.name.s.len = in->len;
return 0;
}
static int pv_get_formated_time(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
static char buf[128];
time_t t;
if(msg==NULL)
return -1;
time( &t );
res->rs.len = strftime( buf, 127, param->pvn.u.isname.name.s.s,
localtime( &t ) );
if (res->rs.len<=0)
return pv_get_null(msg, param, res);
res->rs.s = buf;
res->flags = PV_VAL_STR;
return 0;
}
static int pv_get_timef(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
time_t t;
str s;
if(msg==NULL)
return -1;
t = time(NULL);
s.s = ctime(&t);
s.len = strlen(s.s)-1;
return pv_get_strintval(msg, param, res, &s, (int)t);
}
static int pv_get_msgid(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
return pv_get_uintval(msg, param, res, msg->id);
}
static int pv_get_method(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(msg->first_line.type == SIP_REQUEST)
{
return pv_get_strintval(msg, param, res,
&msg->first_line.u.request.method,
(int)msg->first_line.u.request.method_value);
}
if(msg->cseq==NULL && ((parse_headers(msg, HDR_CSEQ_F, 0)==-1) ||
(msg->cseq==NULL)))
{
LM_ERR("no CSEQ header\n");
return pv_get_null(msg, param, res);
}
return pv_get_strintval(msg, param, res,
&get_cseq(msg)->method,
get_cseq(msg)->method_id);
}
static int pv_get_status(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(msg->first_line.type != SIP_REPLY)
return pv_get_null(msg, param, res);
return pv_get_intstrval(msg, param, res,
(int)msg->first_line.u.reply.statuscode,
&msg->first_line.u.reply.status);
}
static int pv_get_reason(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(msg->first_line.type != SIP_REPLY)
return pv_get_null(msg, param, res);
return pv_get_strval(msg, param, res, &msg->first_line.u.reply.reason);
}
static int pv_get_ruri(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL || res==NULL)
return -1;
if(msg->first_line.type == SIP_REPLY) /* REPLY doesn't have a ruri */
return pv_get_null(msg, param, res);
if(msg->parsed_uri_ok==0 /* R-URI not parsed*/ && parse_sip_msg_uri(msg)<0)
{
LM_ERR("failed to parse the R-URI\n");
return pv_get_null(msg, param, res);
}
if (msg->new_uri.s!=NULL)
return pv_get_strval(msg, param, res, &msg->new_uri);
return pv_get_strval(msg, param, res, &msg->first_line.u.request.uri);
}
static int pv_get_ru_q(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL || res==NULL)
return -1;
if(msg->first_line.type == SIP_REPLY)
return pv_get_null(msg, param, res);
return pv_get_sintval(msg, param, res, get_ruri_q(msg));
}
static int pv_get_ouri(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL || res==NULL)
return -1;
if(msg->first_line.type == SIP_REPLY) /* REPLY doesn't have a ruri */
return pv_get_null(msg, param, res);
if(msg->parsed_orig_ruri_ok==0
/* orig R-URI not parsed*/ && parse_orig_ruri(msg)<0)
{
LM_ERR("failed to parse the R-URI\n");
return pv_get_null(msg, param, res);
}
return pv_get_strval(msg, param, res, &msg->first_line.u.request.uri);
}
static int pv_get_xuri_attr(struct sip_msg *msg, struct sip_uri *parsed_uri,
pv_param_t *param, pv_value_t *res)
{
unsigned short proto;
str proto_s;
if(param->pvn.u.isname.name.n==1) /* username */
{
if(parsed_uri->user.s==NULL || parsed_uri->user.len<=0)
return pv_get_null(msg, param, res);
return pv_get_strval(msg, param, res, &parsed_uri->user);
} else if(param->pvn.u.isname.name.n==2) /* domain */ {
if(parsed_uri->host.s==NULL || parsed_uri->host.len<=0)
return pv_get_null(msg, param, res);
return pv_get_strval(msg, param, res, &parsed_uri->host);
} else if(param->pvn.u.isname.name.n==3) /* port */ {
if(parsed_uri->port.s==NULL)
return pv_get_uintval(msg, param, res,
get_uri_port( parsed_uri, &proto));
return pv_get_strintval(msg, param, res, &parsed_uri->port,
(int)parsed_uri->port_no);
} else if(param->pvn.u.isname.name.n==4) /* protocol */ {
if(parsed_uri->transport_val.s==NULL) {
get_uri_port(parsed_uri, &proto);
proto_s.s = protos[proto].name;
proto_s.len = strlen(proto_s.s);
return pv_get_strintval(msg, param, res, &proto_s, (int)proto);
}
return pv_get_strintval(msg, param, res, &parsed_uri->transport_val,
(int)parsed_uri->proto);
}
LM_ERR("unknown specifier\n");
return pv_get_null(msg, param, res);
}
static int pv_get_ruri_attr(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(msg->first_line.type == SIP_REPLY) /* REPLY doesn't have a ruri */
return pv_get_null(msg, param, res);
if(msg->parsed_uri_ok==0 /* R-URI not parsed*/ && parse_sip_msg_uri(msg)<0)
{
LM_ERR("failed to parse the R-URI\n");
return pv_get_null(msg, param, res);
}
return pv_get_xuri_attr(msg, &(msg->parsed_uri), param, res);
}
static int pv_get_ouri_attr(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(msg->first_line.type == SIP_REPLY) /* REPLY doesn't have a ruri */
return pv_get_null(msg, param, res);
if(msg->parsed_orig_ruri_ok==0
/* orig R-URI not parsed*/ && parse_orig_ruri(msg)<0)
{
LM_ERR("failed to parse the R-URI\n");
return pv_get_null(msg, param, res);
}
return pv_get_xuri_attr(msg, &(msg->parsed_orig_ruri), param, res);
}
static int pv_get_path(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(!msg->path_vec.s)
{
return pv_get_null(msg, param, res);
}
return pv_get_strval(msg, param, res, &msg->path_vec);
}
#define CT_NAME_S "name"
#define CT_NAME_LEN (sizeof(CT_NAME_S)-1)
#define CT_NAME_ID 1
#define CT_URI_S "uri"
#define CT_URI_LEN (sizeof(CT_URI_S)-1)
#define CT_URI_ID 2
#define CT_Q_S "q"
#define CT_Q_LEN (sizeof(CT_Q_S)-1)
#define CT_Q_ID 3
#define CT_EXPIRES_S "expires"
#define CT_EXPIRES_LEN (sizeof(CT_EXPIRES_S)-1)
#define CT_EXPIRES_ID 4
#define CT_METHODS_S "methods"
#define CT_METHODS_LEN (sizeof(CT_METHODS_S)-1)
#define CT_METHODS_ID 5
#define CT_RECEIVED_S "received"
#define CT_RECEIVED_LEN (sizeof(CT_RECEIVED_S)-1)
#define CT_RECEIVED_ID 6
#define CT_PARAMS_S "params"
#define CT_PARAMS_LEN (sizeof(CT_PARAMS_S)-1)
#define CT_PARAMS_ID 7
int pv_parse_ct_name(pv_spec_p sp, str *in)
{
if (sp==NULL)
return -1;
sp->pvp.pvn.type = PV_NAME_INTSTR;
sp->pvp.pvn.u.isname.type = 0;
if (in==NULL || in->s==NULL || in->len==0) {
sp->pvp.pvn.u.isname.name.n = 0;
} else
if (in->len==CT_NAME_LEN &&
strncasecmp(in->s, CT_NAME_S, CT_NAME_LEN)==0 ) {
sp->pvp.pvn.u.isname.name.n = CT_NAME_ID;
} else
if (in->len==CT_URI_LEN &&
strncasecmp(in->s, CT_URI_S, CT_URI_LEN)==0 ) {
sp->pvp.pvn.u.isname.name.n = CT_URI_ID;
} else
if (in->len==CT_Q_LEN &&
strncasecmp(in->s, CT_Q_S, CT_Q_LEN)==0 ) {
sp->pvp.pvn.u.isname.name.n = CT_Q_ID;
} else
if (in->len==CT_EXPIRES_LEN &&
strncasecmp(in->s, CT_EXPIRES_S, CT_EXPIRES_LEN)==0 ) {
sp->pvp.pvn.u.isname.name.n = CT_EXPIRES_ID;
} else
if (in->len==CT_METHODS_LEN &&
strncasecmp(in->s, CT_METHODS_S, CT_METHODS_LEN)==0 ) {
sp->pvp.pvn.u.isname.name.n = CT_METHODS_ID;
} else
if (in->len==CT_RECEIVED_LEN &&
strncasecmp(in->s, CT_RECEIVED_S, CT_RECEIVED_LEN)==0 ) {
sp->pvp.pvn.u.isname.name.n = CT_RECEIVED_ID;
} else
if (in->len==CT_PARAMS_LEN &&
strncasecmp(in->s, CT_PARAMS_S, CT_PARAMS_LEN)==0 ) {
sp->pvp.pvn.u.isname.name.n = CT_PARAMS_ID;
} else {
LM_ERR("unsupported CT field <%.*s>\n",in->len,in->s);
return -1;
}
return 0;
}
static inline int get_contact_body_field(pv_value_t *res,struct hdr_field *cth,
contact_t *ct, pv_name_t *pvn)
{
param_t *p;
if (ct==NULL) {
/* star contact hdr */
if (pvn->u.isname.name.n==0) {
res->rs = cth->body;
res->flags = PV_VAL_STR;
return 0;
}
return pv_get_null(NULL, NULL, res);
}
switch (pvn->u.isname.name.n) {
case 0: /* all body */
res->rs.s = ct->name.s?ct->name.s:ct->uri.s;
res->rs.len = ct->len;
break;
case CT_NAME_ID: /* name only */
if (ct->name.s==NULL || ct->name.len==0)
return pv_get_null(NULL, NULL, res);
res->rs = ct->name;
break;
case CT_URI_ID: /* uri only */
res->rs = ct->uri;
break;
case CT_Q_ID: /* Q param only */
if ( !ct->q || !ct->q->body.s || !ct->q->body.len)
return pv_get_null(NULL, NULL, res);
res->rs = ct->q->body;
break;
case CT_EXPIRES_ID: /* EXPIRES param only */
if (!ct->expires||!ct->expires->body.s||!ct->expires->body.len)
return pv_get_null(NULL, NULL, res);
res->rs = ct->expires->body;
break;
case CT_METHODS_ID: /* METHODS param only */
if (!ct->methods||!ct->methods->body.s||!ct->methods->body.len)
return pv_get_null(NULL, NULL, res);
res->rs = ct->methods->body;
break;
case CT_RECEIVED_ID: /* RECEIVED param only */
if(!ct->received||!ct->received->body.s||!ct->received->body.len)
return pv_get_null(NULL, NULL, res);
res->rs = ct->received->body;
break;
case CT_PARAMS_ID: /* all param */
if (!ct->params)
return pv_get_null(NULL, NULL, res);
res->rs.s = ct->params->name.s;
for( p=ct->params ; p->next ; p=p->next);
res->rs.len = p->name.s + p->len - res->rs.s;
break;
default:
LM_CRIT("BUG - unsupported ID %d\n",pvn->u.isname.type);
return pv_get_null(NULL, NULL, res);
}
res->flags = PV_VAL_STR;
return 0;
}
static int pv_get_contact_body(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
struct hdr_field *ct_h;
contact_body_t *ct_b;
contact_t *ct;
int idx;
int idxf;
char *p;
if(msg==NULL)
return -1;
/* get all CONTACT headers */
if(parse_headers(msg, HDR_EOH_F, 0)==-1 || msg->contact==NULL ||
!msg->contact->body.s || msg->contact->body.len<=0)
{
LM_DBG("no contact header!\n");
return pv_get_null(msg, param, res);
}
ct_h = msg->contact;
if (parse_contact( ct_h )!=0) {
LM_ERR("failed to parse contact hdr\n");
return -1;
}
ct_b = (contact_body_t*)ct_h->parsed;
if (ct_b==NULL)
return pv_get_null(msg, param, res);
ct = ct_b->contacts;
/* get the index */
if(pv_get_spec_index(msg, param, &idx, &idxf)!=0) {
LM_ERR("invalid index\n");
return -1;
}
if( idxf!=PV_IDX_ALL && idx==0) {
/* no index specified -> return the first contact body */
return get_contact_body_field( res , ct_h, ct, ¶m->pvn);
}
if(idxf==PV_IDX_ALL) {
/* return all contact bodies */
p = pv_local_buf;
do {
if(p!=pv_local_buf) {
if (p-pv_local_buf+PV_FIELD_DELIM_LEN+1>PV_LOCAL_BUF_SIZE){
LM_ERR("local buffer length exceeded\n");
return pv_get_null(msg, param, res);
}
memcpy(p, PV_FIELD_DELIM, PV_FIELD_DELIM_LEN);
p += PV_FIELD_DELIM_LEN;
}
get_contact_body_field( res , ct_h, ct, ¶m->pvn);
if (p-pv_local_buf+res->rs.len+1>PV_LOCAL_BUF_SIZE) {
LM_ERR("local buffer length exceeded!\n");
return pv_get_null(msg, param, res);
}
memcpy(p, res->rs.s, res->rs.len);
p += res->rs.len;
ct = ct?ct->next:NULL;
while (ct==NULL && ct_h!=NULL) {
ct_h = ct_h->sibling;
if (ct_h) {
if (parse_contact( ct_h )!=0) {
LM_ERR("failed to parse contact hdr\n");
return -1;
}
ct_b = (contact_body_t*)ct_h->parsed;
ct = ct_b->contacts;
}
}
} while (ct_h);
res->rs.s = pv_local_buf;
res->rs.len = p - pv_local_buf;
res->flags = PV_VAL_STR;
return 0;
}
/* numerical index */
if (idx<0) {
/* index from the end */
idxf=0;
while(ct_h) {
idxf++;
ct = ct?ct->next:NULL;
while (ct==NULL && ct_h!=NULL) {
ct_h = ct_h->sibling;
if (ct_h) {
if (parse_contact( ct_h)!=0) {
LM_ERR("failed to parse contact hdr\n");
return -1;
}
ct_b = (contact_body_t*)ct_h->parsed;
ct = ct_b->contacts;
}
}
}
if (-idx>idxf)
return pv_get_null(msg, param, res);
idx = idxf +idx;
ct_h = msg->contact;
ct_b = (contact_body_t*)ct_h->parsed;
ct = ct_b->contacts;
}
while (idx!=0 && ct_h) {
/* get to the next contact body */
idx--;
ct = ct?ct->next:NULL;
while (ct==NULL && ct_h!=NULL) {
ct_h = ct_h->sibling;
if (ct_h) {
if (parse_contact( ct_h )!=0) {
LM_ERR("failed to parse contact hdr\n");
return -1;
}
ct_b = (contact_body_t*)ct_h->parsed;
ct = ct_b->contacts;
}
}
}
/* nothing found ?*/
if (ct==NULL)
return pv_get_null(msg, param, res);
/* take the current body */
return get_contact_body_field( res , ct_h, ct, ¶m->pvn);
}
extern err_info_t _oser_err_info;
static int pv_get_errinfo_attr(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(param->pvn.u.isname.name.n==0) /* class */ {
return pv_get_sintval(msg, param, res, _oser_err_info.eclass);
} else if(param->pvn.u.isname.name.n==1) /* level */ {
return pv_get_sintval(msg, param, res, _oser_err_info.level);
} else if(param->pvn.u.isname.name.n==2) /* info */ {
if(_oser_err_info.info.s==NULL)
pv_get_null(msg, param, res);
return pv_get_strval(msg, param, res, &_oser_err_info.info);
} else if(param->pvn.u.isname.name.n==3) /* rcode */ {
return pv_get_sintval(msg, param, res, _oser_err_info.rcode);
} else if(param->pvn.u.isname.name.n==4) /* rreason */ {
if(_oser_err_info.rreason.s==NULL)
pv_get_null(msg, param, res);
return pv_get_strval(msg, param, res, &_oser_err_info.rreason);
} else {
LM_DBG("invalid attribute!\n");
return pv_get_null(msg, param, res);
}
}
static int pv_get_xto_attr(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res, struct to_body *xto, int type)
{
struct sip_uri *uri;
if(xto==NULL)
return -1;
if(param->pvn.u.isname.name.n==1) /* uri */
return pv_get_strval(msg, param, res, &xto->uri);
if(param->pvn.u.isname.name.n==4) /* tag */
{
if (xto->tag_value.s==NULL || xto->tag_value.len<=0)
{
LM_DBG("no Tag parameter\n");
return pv_get_null(msg, param, res);
}
return pv_get_strval(msg, param, res, &xto->tag_value);
}
if(param->pvn.u.isname.name.n==5) /* display name */
{
if(xto->display.s==NULL || xto->display.len<=0)
{
LM_DBG("no Display name\n");
return pv_get_null(msg, param, res);
}
return pv_get_strval(msg, param, res, &xto->display);
}
if(type==0)
{
if((uri=parse_to_uri(msg))==NULL)
{
LM_ERR("cannot parse To URI\n");
return pv_get_null(msg, param, res);
}
} else {
if((uri=parse_from_uri(msg))==NULL)
{
LM_ERR("cannot parse From URI\n");
return pv_get_null(msg, param, res);
}
}
if(param->pvn.u.isname.name.n==2) /* username */
{
if(uri->user.s==NULL || uri->user.len<=0)
{
LM_DBG("no username\n");
return pv_get_null(msg, param, res);
}
return pv_get_strval(msg, param, res, &uri->user);
} else if(param->pvn.u.isname.name.n==3) /* domain */ {
if(uri->host.s==NULL || uri->host.len<=0)
{
LM_DBG("no domain\n");
return pv_get_null(msg, param, res);
}
return pv_get_strval(msg, param, res, &uri->host);
}
LM_ERR("unknown specifier\n");
return pv_get_null(msg, param, res);
}
static int pv_get_to_attr(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(msg->to==NULL && parse_headers(msg, HDR_TO_F, 0)==-1)
{
LM_ERR("cannot parse To header\n");
return pv_get_null(msg, param, res);
}
if(msg->to==NULL || get_to(msg)==NULL) {
LM_DBG("no To header\n");
return pv_get_null(msg, param, res);
}
return pv_get_xto_attr(msg, param, res, get_to(msg), 0);
}
static int pv_get_from_attr(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(parse_from_header(msg)<0)
{
LM_ERR("cannot parse From header\n");
return pv_get_null(msg, param, res);
}
if(msg->from==NULL || get_from(msg)==NULL) {
LM_DBG("no From header\n");
return pv_get_null(msg, param, res);
}
return pv_get_xto_attr(msg, param, res, get_from(msg), 1);
}
static int pv_get_cseq(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
if(msg->cseq==NULL && ((parse_headers(msg, HDR_CSEQ_F, 0)==-1)
|| (msg->cseq==NULL)) )
{
LM_ERR("cannot parse CSEQ header\n");
return pv_get_null(msg, param, res);
}
return pv_get_strval(msg, param, res, &(get_cseq(msg)->number));
}
static int pv_get_msg_buf(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
str s;
if(msg==NULL)
return -1;
s.s = msg->buf;
s.len = msg->len;
return pv_get_strval(msg, param, res, &s);
}
static int pv_get_msg_len(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
if(msg==NULL)
return -1;
return pv_get_uintval(msg, param, res, msg->len);
}
static int pv_get_flags(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
str buf;
if (!msg)
return -1;
buf = bitmask_to_flag_list(FLAG_TYPE_MSG, msg->flags);
return pv_get_strval(msg, param, res, &buf);
}
static int pv_get_bflags(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{
str buf;
if (!msg)
return -1;
buf = bitmask_to_flag_list(FLAG_TYPE_BRANCH, getb0flags(msg));
return pv_get_strval(msg, param, res, &buf);
}
static int pv_get_callid(struct sip_msg *msg, pv_param_t *param,
pv_value_t *res)
{