/
tps_msg.c
1192 lines (1057 loc) · 25.1 KB
/
tps_msg.c
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/**
* Copyright (C) 2016 Daniel-Constantin Mierla (asipto.com)
*
* This file is part of Kamailio, a free SIP server.
*
* This file 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
*
*
* This file 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
*/
/*!
* \file
* \brief SIP-router topoh ::
* \ingroup topoh
* Module: \ref topoh
*/
#include <string.h>
#include "../../core/dprint.h"
#include "../../core/mem/mem.h"
#include "../../core/data_lump.h"
#include "../../core/forward.h"
#include "../../core/trim.h"
#include "../../core/dset.h"
#include "../../core/msg_translator.h"
#include "../../core/parser/parse_rr.h"
#include "../../core/parser/parse_uri.h"
#include "../../core/parser/parse_param.h"
#include "../../core/parser/parse_from.h"
#include "../../core/parser/parse_to.h"
#include "../../core/parser/parse_via.h"
#include "../../core/parser/contact/parse_contact.h"
#include "../../core/parser/parse_refer_to.h"
#include "tps_msg.h"
#include "tps_storage.h"
extern int _tps_param_mask_callid;
extern int _tps_contact_mode;
extern str _tps_cparam_name;
extern int _tps_rr_update;
extern str _tps_context_param;
extern str _tps_context_value;
str _sr_hname_xbranch = str_init("P-SR-XBranch");
str _sr_hname_xuuid = str_init("P-SR-XUID");
unsigned int _tps_methods_nocontact = METHOD_CANCEL|METHOD_BYE|METHOD_PRACK;
/**
*
*/
int tps_skip_rw(char *s, int len)
{
while(len>0)
{
if(s[len-1]==' ' || s[len-1]=='\t' || s[len-1]=='\n' || s[len-1]=='\r'
|| s[len-1]==',')
len--;
else return len;
}
return 0;
}
/**
*
*/
struct via_param *tps_get_via_param(struct via_body *via, str *name)
{
struct via_param *p;
for(p=via->param_lst; p; p=p->next)
{
if(p->name.len==name->len
&& strncasecmp(p->name.s, name->s, name->len)==0)
return p;
}
return NULL;
}
/**
*
*/
int tps_get_param_value(str *in, str *name, str *value)
{
param_t* params = NULL;
param_t* p = NULL;
param_hooks_t phooks;
if (parse_params(in, CLASS_ANY, &phooks, ¶ms)<0)
return -1;
for (p = params; p; p=p->next)
{
if (p->name.len==name->len
&& strncasecmp(p->name.s, name->s, name->len)==0)
{
*value = p->body;
free_params(params);
return 0;
}
}
if(params) free_params(params);
return 1;
}
/**
*
*/
int tps_remove_headers(sip_msg_t *msg, uint32_t hdr)
{
struct hdr_field *hf;
struct lump* l;
if(parse_headers(msg, HDR_EOH_F, 0)<0) {
LM_ERR("failed to parse headers\n");
return -1;
}
for (hf=msg->headers; hf; hf=hf->next) {
if (hdr!=hf->type)
continue;
l=del_lump(msg, hf->name.s-msg->buf, hf->len, 0);
if (l==0) {
LM_ERR("failed to remove the header\n");
return -1;
}
}
return 0;
}
/**
*
*/
int tps_add_headers(sip_msg_t *msg, str *hname, str *hbody, int hpos)
{
struct lump* anchor;
str hs;
if(hname==NULL || hname->len<=0 || hbody==NULL || hbody->len<=0)
return 0;
if(parse_headers(msg, HDR_EOH_F, 0)<0) {
LM_ERR("failed to parse headers\n");
return -1;
}
if(hpos == 0) { /* append */
/* after last header */
anchor = anchor_lump(msg, msg->unparsed - msg->buf, 0, 0);
} else { /* insert */
/* before first header */
anchor = anchor_lump(msg, msg->headers->name.s - msg->buf, 0, 0);
}
if(anchor == 0) {
LM_ERR("can't get anchor\n");
return -1;
}
hs.len = hname->len + 2 + hbody->len;
hs.s = (char*)pkg_malloc(hs.len + 3);
if (hs.s==NULL) {
PKG_MEM_ERROR_FMT("(%.*s - %d)\n", hname->len, hname->s, hs.len);
return -1;
}
memcpy(hs.s, hname->s, hname->len);
hs.s[hname->len] = ':';
hs.s[hname->len+1] = ' ';
memcpy(hs.s + hname->len + 2, hbody->s, hbody->len);
/* add end of header if not present */
if(hs.s[hname->len + 2 + hbody->len - 1]!='\n') {
hs.s[hname->len + 2 + hbody->len] = '\r';
hs.s[hname->len + 2 + hbody->len+1] = '\n';
hs.len += 2;
}
LM_DBG("adding to headers(%d) - [%.*s]\n", hpos, hs.len, hs.s);
if (insert_new_lump_before(anchor, hs.s, hs.len, 0) == 0) {
LM_ERR("can't insert lump\n");
pkg_free(hs.s);
return -1;
}
return 0;
}
/**
*
*/
int tps_get_uri_param_value(str *uri, str *name, str *value)
{
struct sip_uri puri;
memset(value, 0, sizeof(str));
if(parse_uri(uri->s, uri->len, &puri)<0)
return -1;
return tps_get_param_value(&puri.params, name, value);
}
/**
*
*/
int tps_get_uri_type(str *uri, int *mode, str *value)
{
struct sip_uri puri;
int ret;
str r2 = {"r2", 2};
memset(value, 0, sizeof(str));
*mode = 0;
if(parse_uri(uri->s, uri->len, &puri)<0)
return -1;
LM_DBG("PARAMS [%.*s]\n", puri.params.len, puri.params.s);
if(check_self(&puri.host, puri.port_no, 0)==1)
{
/* myself -- matched on all protos */
ret = tps_get_param_value(&puri.params, &r2, value);
if(ret<0)
return -1;
if(ret==1) /* not found */
return 0; /* skip */
LM_DBG("VALUE [%.*s]\n",
value->len, value->s);
if(value->len==2 && strncasecmp(value->s, "on", 2)==0)
*mode = 1;
memset(value, 0, sizeof(str));
return 0; /* skip */
}
/* not myself & not mask ip */
return 1; /* encode */
}
/**
*
*/
char* tps_msg_update(sip_msg_t *msg, unsigned int *olen)
{
struct dest_info dst;
init_dest_info(&dst);
dst.proto = PROTO_UDP;
return build_req_buf_from_sip_req(msg,
olen, &dst, BUILD_NO_LOCAL_VIA|BUILD_NO_VIA1_UPDATE);
}
/**
*
*/
int tps_skip_msg(sip_msg_t *msg)
{
if (msg->cseq==NULL || get_cseq(msg)==NULL) {
LM_WARN("Invalid/Unparsed CSeq in message. Skipping.");
return 1;
}
if((get_cseq(msg)->method_id)&(METHOD_REGISTER|METHOD_PUBLISH))
return 1;
return 0;
}
/**
*
*/
int tps_dlg_detect_direction(sip_msg_t *msg, tps_data_t *ptsd,
uint32_t *direction)
{
str ftag = {0, 0};
/* detect direction - get from-tag */
if(parse_from_header(msg)<0 || msg->from==NULL) {
LM_ERR("failed getting 'from' header!\n");
goto error;
}
ftag = get_from(msg)->tag_value;
if(ptsd->a_tag.len!=ftag.len) {
*direction = TPS_DIR_UPSTREAM;
} else {
if(memcmp(ptsd->a_tag.s, ftag.s, ftag.len)==0) {
*direction = TPS_DIR_DOWNSTREAM;
} else {
*direction = TPS_DIR_UPSTREAM;
}
}
return 0;
error:
return -1;
}
/**
*
*/
int tps_dlg_message_update(sip_msg_t *msg, tps_data_t *ptsd, int ctmode)
{
str tuuid = STR_NULL;
int ret;
#define TPS_TUUID_MIN_LEN 10
if(parse_sip_msg_uri(msg)<0) {
LM_ERR("failed to parse r-uri\n");
return -1;
}
if (ctmode == 1 || ctmode == 2) {
if(msg->parsed_uri.sip_params.len<TPS_TUUID_MIN_LEN) {
LM_DBG("not an expected param format\n");
return 1;
}
/* find the r-uri parameter */
ret = tps_get_param_value(&msg->parsed_uri.params,
&_tps_cparam_name, &tuuid);
if (ret < 0) {
LM_ERR("failed to parse param\n");
return -1;
}
if (ret == 1) {
LM_DBG("prefix para not found\n");
return 1;
}
} else {
if(msg->parsed_uri.user.len<TPS_TUUID_MIN_LEN) {
LM_DBG("not an expected user format\n");
return 1;
}
tuuid = msg->parsed_uri.user;
}
if(memcmp(tuuid.s, "atpsh-", 6)==0) {
ptsd->a_uuid = tuuid;
return 0;
}
if(memcmp(tuuid.s, "btpsh-", 6)==0) {
ptsd->a_uuid = tuuid;
ptsd->b_uuid = tuuid;
return 0;
}
LM_DBG("not an expected prefix\n");
return 1;
}
/**
*
*/
int tps_pack_message(sip_msg_t *msg, tps_data_t *ptsd)
{
hdr_field_t *hdr;
via_body_t *via;
rr_t *rr;
int i;
int vlen;
int r2;
int isreq;
int rr_update = _tps_rr_update;
if(ptsd->cp==NULL) {
ptsd->cp = ptsd->cbuf;
}
if(_tps_rr_update) {
if((msg->first_line.type==SIP_REQUEST) && !(get_to(msg)->tag_value.len>0)) {
rr_update = 0;
}
}
i = 0;
for(hdr=msg->h_via1; hdr; hdr=next_sibling_hdr(hdr)) {
for(via=(struct via_body*)hdr->parsed; via; via=via->next) {
i++;
vlen = tps_skip_rw(via->name.s, via->bsize);
if(ptsd->cp + vlen + 2 >= ptsd->cbuf + TPS_DATA_SIZE) {
LM_ERR("no more space to pack via headers\n");
return -1;
}
if(i>1) {
*ptsd->cp = ',';
ptsd->cp++;
if(i>2) {
ptsd->x_via2.len++;
}
}
memcpy(ptsd->cp, via->name.s, vlen);
if(i==1) {
ptsd->x_via1.s = ptsd->cp;
ptsd->x_via1.len = vlen;
if(via->branch!=NULL) {
ptsd->x_vbranch1.s = ptsd->x_via1.s + (via->branch->value.s - via->name.s);
ptsd->x_vbranch1.len = via->branch->value.len;
}
} else {
if(i==2) {
ptsd->x_via2.s = ptsd->cp;
}
ptsd->x_via2.len += vlen;
}
ptsd->cp += vlen;
}
}
LM_DBG("compacted headers - x_via1: [%.*s](%d) - x_via2: [%.*s](%d)"
" - x_vbranch1: [%.*s](%d)\n",
ptsd->x_via1.len, ZSW(ptsd->x_via1.s), ptsd->x_via1.len,
ptsd->x_via2.len, ZSW(ptsd->x_via2.s), ptsd->x_via2.len,
ptsd->x_vbranch1.len, ZSW(ptsd->x_vbranch1.s), ptsd->x_vbranch1.len);
ptsd->a_rr.len = 0;
ptsd->s_rr.len = 0;
i = 0;
r2 = 0;
isreq = (msg->first_line.type==SIP_REQUEST)?1:0;
for(hdr=msg->record_route; hdr; hdr=next_sibling_hdr(hdr)) {
if (parse_rr(hdr) < 0) {
LM_ERR("failed to parse RR\n");
return -1;
}
for(rr =(rr_t*)hdr->parsed; rr; rr=rr->next) {
i++;
if(ptsd->cp + rr->nameaddr.uri.len + 4 >= ptsd->cbuf + TPS_DATA_SIZE) {
LM_ERR("no more space to pack rr headers\n");
return -1;
}
if(isreq==1 || rr_update) {
/* sip request - get a+s-side record route */
if(i>1) {
if(i==2 &&r2==0) {
ptsd->s_rr.len = ptsd->a_rr.len;
}
if(i==3 &&r2==1) {
ptsd->s_rr.len = ptsd->a_rr.len;
}
*ptsd->cp = ',';
ptsd->cp++;
ptsd->a_rr.len++;
if(rr_update) {
ptsd->b_rr.len++;
}
}
if(i==1 && rr_update) {
ptsd->b_rr.s = ptsd->cp;
}
*ptsd->cp = '<';
if(i==1) {
ptsd->a_rr.s = ptsd->cp;
ptsd->s_rr.s = ptsd->cp;
}
if(i==2 && r2==0) {
ptsd->a_rr.s = ptsd->cp;
ptsd->a_rr.len = 0;
}
if(i==3 && r2==1) {
ptsd->a_rr.s = ptsd->cp;
ptsd->a_rr.len = 0;
}
ptsd->cp++;
ptsd->a_rr.len++;
if(rr_update) {
ptsd->b_rr.len++;
}
memcpy(ptsd->cp, rr->nameaddr.uri.s, rr->nameaddr.uri.len);
if(i==1) {
ptsd->bs_contact.s = ptsd->cp;
ptsd->bs_contact.len = rr->nameaddr.uri.len;
if(_strnstr(ptsd->bs_contact.s, ";r2=on",
ptsd->bs_contact.len)==0) {
LM_DBG("single record routing by proxy\n");
ptsd->as_contact.s = ptsd->cp;
ptsd->as_contact.len = rr->nameaddr.uri.len;
} else {
r2 = 1;
}
} else {
if(i==2 && ptsd->as_contact.len==0) {
LM_DBG("double record routing by proxy\n");
ptsd->as_contact.s = ptsd->cp;
ptsd->as_contact.len = rr->nameaddr.uri.len;
}
}
ptsd->a_rr.len += rr->nameaddr.uri.len;
ptsd->cp += rr->nameaddr.uri.len;
*ptsd->cp = '>';
ptsd->cp++;
ptsd->a_rr.len++;
if(rr_update) {
ptsd->b_rr.len += rr->nameaddr.uri.len;
ptsd->b_rr.len++;
}
} else {
/* sip response - get b-side record route */
if(i==1) {
ptsd->b_rr.s = ptsd->cp;
}
if(i>1) {
*ptsd->cp = ',';
ptsd->cp++;
ptsd->b_rr.len++;
}
*ptsd->cp = '<';
ptsd->cp++;
ptsd->b_rr.len++;
memcpy(ptsd->cp, rr->nameaddr.uri.s, rr->nameaddr.uri.len);
ptsd->cp += rr->nameaddr.uri.len;
ptsd->b_rr.len += rr->nameaddr.uri.len;
*ptsd->cp = '>';
ptsd->cp++;
ptsd->b_rr.len++;
}
}
}
if(isreq==1) {
if(i==1) {
ptsd->s_rr.len = ptsd->a_rr.len;
ptsd->a_rr.len = 0;
}
if(i==2 && r2==1) {
ptsd->s_rr.len = ptsd->a_rr.len;
ptsd->a_rr.len = 0;
}
}
LM_DBG("compacted headers - a_rr: [%.*s](%d) - b_rr: [%.*s](%d)"
" - s_rr: [%.*s](%d)\n",
ptsd->a_rr.len, ZSW(ptsd->a_rr.s), ptsd->a_rr.len,
ptsd->b_rr.len, ZSW(ptsd->b_rr.s), ptsd->b_rr.len,
ptsd->s_rr.len, ZSW(ptsd->s_rr.s), ptsd->s_rr.len);
LM_DBG("compacted headers - as_contact: [%.*s](%d) - bs_contact: [%.*s](%d)\n",
ptsd->as_contact.len, ZSW(ptsd->as_contact.s), ptsd->as_contact.len,
ptsd->bs_contact.len, ZSW(ptsd->bs_contact.s), ptsd->bs_contact.len);
ptsd->x_rr = ptsd->a_rr;
if(isreq==0) {
if(msg->first_line.u.reply.statuscode >= 180
&& msg->first_line.u.reply.statuscode < 199) {
/* provisional replies that create early dialogs
* - skip 199 Early Dialog Terminated */
ptsd->y_rr = ptsd->b_rr;
}
}
ptsd->s_method_id = get_cseq(msg)->method_id;
if(_tps_context_value.len>0) {
ptsd->x_context = _tps_context_value;
} else if(_tps_context_param.len>0) {
ptsd->x_context = _tps_context_param;
}
return 0;
}
/**
*
*/
int tps_reinsert_via(sip_msg_t *msg, tps_data_t *ptsd, str *hbody)
{
str hname = str_init("Via");
if(tps_add_headers(msg, &hname, hbody, 1)<0) {
return -1;
}
return 0;
}
/**
*
*/
int tps_reinsert_contact(sip_msg_t *msg, tps_data_t *ptsd, str *hbody)
{
str hname = str_init("Contact");
if (get_cseq(msg)->method_id & _tps_methods_nocontact) {
return 0;
}
if(tps_add_headers(msg, &hname, hbody, 0)<0) {
return -1;
}
return 0;
}
/**
*
*/
int tps_remove_name_headers(sip_msg_t *msg, str *hname)
{
hdr_field_t *hf;
struct lump* l;
for (hf=msg->headers; hf; hf=hf->next)
{
if (hf->name.len==hname->len
&& strncasecmp(hf->name.s, hname->s,
hname->len)==0)
{
l=del_lump(msg, hf->name.s-msg->buf, hf->len, 0);
if (l==0) {
LM_ERR("unable to delete header [%.*s]\n",
hname->len, hname->s);
return -1;
}
return 0;
}
}
return 0;
}
/**
*
*/
int tps_reappend_via(sip_msg_t *msg, tps_data_t *ptsd, str *hbody)
{
str hname = str_init("Via");
if(tps_add_headers(msg, &hname, hbody, 0)<0) {
return -1;
}
return 0;
}
/**
*
*/
int tps_append_xbranch(sip_msg_t *msg, str *hbody)
{
if(tps_add_headers(msg, &_sr_hname_xbranch, hbody, 0)<0) {
LM_ERR("failed to add xbranch header [%.*s]/%d\n",
hbody->len, hbody->s, hbody->len);
return -1;
}
return 0;
}
/**
*
*/
int tps_remove_xbranch(sip_msg_t *msg)
{
return tps_remove_name_headers(msg, &_sr_hname_xbranch);
}
/**
*
*/
int tps_get_xbranch(sip_msg_t *msg, str *hbody)
{
hdr_field_t *hf;
if(parse_headers(msg, HDR_EOH_F, 0)<0) {
return -1;
}
for (hf=msg->headers; hf; hf=hf->next)
{
if(_sr_hname_xbranch.len==hf->name.len
&& strncasecmp(_sr_hname_xbranch.s, hf->name.s,
hf->name.len)==0) {
break;
}
}
if(hf!=NULL) {
*hbody = hf->body;
return 0;
}
return -1;
}
/**
*
*/
int tps_append_xuuid(sip_msg_t *msg, str *hbody)
{
if(tps_add_headers(msg, &_sr_hname_xuuid, hbody, 0)<0) {
LM_ERR("failed to add xuuid header [%.*s]/%d\n",
hbody->len, hbody->s, hbody->len);
return -1;
}
return 0;
}
/**
*
*/
int tps_remove_xuuid(sip_msg_t *msg)
{
return tps_remove_name_headers(msg, &_sr_hname_xuuid);
}
/**
*
*/
int tps_get_xuuid(sip_msg_t *msg, str *hbody)
{
hdr_field_t *hf;
if(parse_headers(msg, HDR_EOH_F, 0)<0) {
return -1;
}
for (hf=msg->headers; hf; hf=hf->next)
{
if(_sr_hname_xuuid.len==hf->name.len
&& strncasecmp(_sr_hname_xuuid.s, hf->name.s,
hf->name.len)==0) {
break;
}
}
if(hf!=NULL) {
*hbody = hf->body;
return 0;
}
return -1;
}
/**
*
*/
int tps_reappend_rr(sip_msg_t *msg, tps_data_t *ptsd, str *hbody)
{
str hname = str_init("Record-Route");
if(tps_add_headers(msg, &hname, hbody, 0)<0) {
return -1;
}
return 0;
}
/**
*
*/
int tps_reappend_route(sip_msg_t *msg, tps_data_t *ptsd, str *hbody, int rev)
{
str hname = str_init("Route");
int i;
int c;
str sb;
if(hbody==NULL || hbody->s==NULL || hbody->len<=0 || hbody->s[0]=='\0')
return 0;
if(rev==1) {
c = 0;
sb.len = 1;
for(i=hbody->len-2; i>=0; i--) {
if(hbody->s[i]==',') {
c = 1;
if(sb.len>0) {
sb.s = hbody->s + i + 1;
if(sb.s[sb.len-1]==',') sb.len--;
if(tps_add_headers(msg, &hname, &sb, 0)<0) {
return -1;
}
}
sb.len = 0;
}
sb.len++;
}
if(c==1) {
if(sb.len>0) {
sb.s = hbody->s;
if(sb.s[sb.len-1]==',') sb.len--;
if(tps_add_headers(msg, &hname, &sb, 0)<0) {
return -1;
}
}
return 0;
}
}
sb = *hbody;
if(sb.len>0 && sb.s[sb.len-1]==',') sb.len--;
trim_zeros_lr(&sb);
trim(&sb);
if(sb.len>0 && sb.s[sb.len-1]==',') sb.len--;
if(tps_add_headers(msg, &hname, &sb, 0)<0) {
return -1;
}
return 0;
}
/**
*
*/
int tps_request_received(sip_msg_t *msg, int dialog)
{
tps_data_t mtsd;
tps_data_t stsd;
str lkey;
str nuri;
uint32_t direction = TPS_DIR_DOWNSTREAM;
int ret;
int use_branch = 0;
unsigned int metid = 0;
LM_DBG("handling incoming request\n");
if(dialog==0) {
/* nothing to do for initial request */
return 0;
}
memset(&mtsd, 0, sizeof(tps_data_t));
memset(&stsd, 0, sizeof(tps_data_t));
if(tps_pack_message(msg, &mtsd)<0) {
LM_ERR("failed to extract and pack the headers\n");
return -1;
}
ret = tps_dlg_message_update(msg, &mtsd, _tps_contact_mode);
if(ret<0) {
LM_ERR("failed to update on dlg message\n");
return -1;
}
lkey = msg->callid->body;
LM_DBG("callid [%.*s] - a_uuid [%.*s] - b_uuid [%.*s]\n", lkey.len, lkey.s,
mtsd.a_uuid.len, ((mtsd.a_uuid.len>0)?mtsd.a_uuid.s:""),
mtsd.b_uuid.len, ((mtsd.b_uuid.len>0)?mtsd.b_uuid.s:""));
tps_storage_lock_get(&lkey);
if(tps_storage_load_dialog(msg, &mtsd, &stsd) < 0) {
goto error;
}
metid = get_cseq(msg)->method_id;
if((metid & (METHOD_BYE|METHOD_INFO|METHOD_PRACK|METHOD_UPDATE))
&& stsd.b_contact.len <= 0) {
/* no B-side contact, look for INVITE transaction record */
if(metid & (METHOD_BYE|METHOD_UPDATE)) {
/* detect direction - via from-tag */
if(tps_dlg_detect_direction(msg, &stsd, &direction) < 0) {
goto error;
}
}
if(tps_storage_link_msg(msg, &mtsd, direction) < 0) {
goto error;
}
mtsd.direction = direction;
memset(&stsd, 0, sizeof(tps_data_t));
if(tps_storage_load_branch(msg, &mtsd, &stsd, 1) < 0) {
goto error;
}
use_branch = 1;
} else {
/* detect direction - via from-tag */
if(tps_dlg_detect_direction(msg, &stsd, &direction) < 0) {
goto error;
}
mtsd.direction = direction;
}
tps_storage_lock_release(&lkey);
if(use_branch && direction == TPS_DIR_DOWNSTREAM) {
nuri = stsd.b_contact;
} else {
if(direction == TPS_DIR_UPSTREAM) {
nuri = stsd.a_contact;
} else {
nuri = stsd.b_contact;
}
}
if(nuri.len>0) {
if(rewrite_uri(msg, &nuri)<0) {
LM_ERR("failed to update r-uri\n");
return -1;
} else {
LM_DBG("r-uri updated to: [%.*s]\n", nuri.len, nuri.s);
}
}
if(use_branch && direction == TPS_DIR_DOWNSTREAM) {
if(tps_reappend_route(msg, &stsd, &stsd.s_rr, 1) < 0) {
LM_ERR("failed to reappend s-route\n");
return -1;
}
if(tps_reappend_route(msg, &stsd, &stsd.y_rr, 1) < 0) {
LM_ERR("failed to reappend b-route\n");
return -1;
}
} else {
if(tps_reappend_route(msg, &stsd, &stsd.s_rr,
(direction == TPS_DIR_UPSTREAM) ? 0 : 1) < 0) {
LM_ERR("failed to reappend s-route\n");
return -1;
}
if(direction == TPS_DIR_UPSTREAM) {
if(tps_reappend_route(msg, &stsd, &stsd.a_rr, 0) < 0) {
LM_ERR("failed to reappend a-route\n");
return -1;
}
} else {
if(tps_reappend_route(msg, &stsd, &stsd.b_rr, 1) < 0) {
LM_ERR("failed to reappend b-route\n");
return -1;
}
}
}
if(dialog!=0) {
tps_append_xuuid(msg, &stsd.a_uuid);
if(_tps_rr_update) {
if(tps_storage_update_dialog(msg, &mtsd, &stsd, TPS_DBU_RPLATTRS|TPS_DBU_BRR)<0) {
goto error;
}
}
if(metid & METHOD_SUBSCRIBE) {
if(tps_storage_update_dialog(msg, &mtsd, &stsd, TPS_DBU_CONTACT|TPS_DBU_TIME)<0) {
goto error;
}
}
}
return 0;
error:
tps_storage_lock_release(&lkey);
return -1;
}
/**
*
*/
int tps_response_received(sip_msg_t *msg)
{
tps_data_t mtsd;
tps_data_t stsd;
tps_data_t btsd;
str lkey;
uint32_t direction = TPS_DIR_DOWNSTREAM;
LM_DBG("handling incoming response\n");
memset(&mtsd, 0, sizeof(tps_data_t));
memset(&stsd, 0, sizeof(tps_data_t));
memset(&btsd, 0, sizeof(tps_data_t));
lkey = msg->callid->body;
if(tps_pack_message(msg, &mtsd)<0) {
LM_ERR("failed to extract and pack the headers\n");
return -1;
}
tps_storage_lock_get(&lkey);
if(tps_storage_load_branch(msg, &mtsd, &btsd, 0)<0) {
goto error;
}
LM_DBG("loaded dialog a_uuid [%.*s]\n",
btsd.a_uuid.len, ZSW(btsd.a_uuid.s));
if(tps_storage_load_dialog(msg, &btsd, &stsd)<0) {
goto error;
}
/* detect direction - via from-tag */
if(tps_dlg_detect_direction(msg, &stsd, &direction)<0) {
goto error;
}
mtsd.direction = direction;
if(tps_storage_update_branch(msg, &mtsd, &btsd,
TPS_DBU_CONTACT|TPS_DBU_RPLATTRS)<0) {
goto error;
}
if(tps_storage_update_dialog(msg, &mtsd, &stsd,
(_tps_rr_update)?(TPS_DBU_RPLATTRS|TPS_DBU_BRR|TPS_DBU_ARR)
:TPS_DBU_RPLATTRS)<0) {
goto error;
}
tps_storage_lock_release(&lkey);
tps_reappend_via(msg, &btsd, &btsd.x_via);
tps_reappend_rr(msg, &btsd, &btsd.s_rr);
tps_reappend_rr(msg, &btsd, &btsd.x_rr);
tps_append_xbranch(msg, &mtsd.x_vbranch1);
return 0;
error:
tps_storage_lock_release(&lkey);
return -1;
}
/**