/**
* Creates new "main" branch by making copy of branch-failure branch.
* Currently the following branch attributes are included:
* request-uri, ruid, path, instance, and branch flags.
*/
static int w_t_reuse_branch(sip_msg_t* msg, char *p1, char *p2)
{
tm_cell_t *t;
int branch;
if (msg == NULL) return -1;
/* first get the transaction */
if (_tmx_tmb.t_check(msg, 0) == -1) return -1;
if ((t = _tmx_tmb.t_gett()) == 0) {
LM_ERR("no transaction\n");
return -1;
}
switch (get_route_type()) {
case BRANCH_FAILURE_ROUTE:
/* use the reason of the winning reply */
if ((branch = _tmx_tmb.t_get_picked_branch()) < 0) {
LM_CRIT("no picked branch (%d) for a final response"
" in MODE_ONFAILURE\n", branch);
return -1;
}
if(rewrite_uri(msg, &(t->uac[branch].uri))<0) {
LM_WARN("failed to rewrite the r-uri\n");
}
set_ruid(msg, &(t->uac[branch].ruid));
if (t->uac[branch].path.len) {
if(set_path_vector(msg, &(t->uac[branch].path))<0) {
LM_WARN("failed to set the path vector\n");
}
} else {
reset_path_vector(msg);
}
setbflagsval(0, t->uac[branch].branch_flags);
set_instance(msg, &(t->uac[branch].instance));
return 1;
default:
LM_ERR("unsupported route_type %d\n", get_route_type());
return -1;
}
}
int sbranch_set_ruri(sip_msg_t *msg)
{
str sv;
flag_t old_bflags;
branch_t *br;
int ret;
ret = 0;
br = &_pv_sbranch;
if(br->len==0)
return -1;
sv.s = br->uri;
sv.len = br->len;
if (rewrite_uri(msg, &sv) < 0) {
LM_ERR("unable to rewrite Request-URI\n");
ret = -3;
goto error;
}
/* reset next hop address */
reset_dst_uri(msg);
if(br->dst_uri_len>0) {
sv.s = br->dst_uri;
sv.len = br->dst_uri_len;
if (set_dst_uri(msg, &sv) < 0) {
ret = -3;
goto error;
}
}
reset_path_vector(msg);
if(br->path_len==0) {
sv.s = br->path;
sv.len = br->path_len;
if(set_path_vector(msg, &sv) < 0) {
ret = -4;
goto error;
}
}
reset_instance(msg);
if (br->instance_len) {
sv.s = br->instance;
sv.len = br->instance_len;
if (set_instance(msg, &sv) < 0) {
ret = -5;
goto error;
}
}
reset_ruid(msg);
if (br->ruid_len) {
sv.s = br->ruid;
sv.len = br->ruid_len;
if (set_ruid(msg, &sv) < 0) {
ret = -6;
goto error;
}
}
reset_ua(msg);
if (br->location_ua_len) {
sv.s = br->location_ua;
sv.len = br->location_ua_len;
if (set_ua(msg, &sv) < 0) {
ret = -7;
goto error;
}
}
if (br->force_send_socket)
set_force_socket(msg, br->force_send_socket);
msg->reg_id = br->reg_id;
set_ruri_q(br->q);
old_bflags = 0;
getbflagsval(0, &old_bflags);
setbflagsval(0, old_bflags|br->flags);
return 0;
error:
return ret;
}
/*! \brief
* Lookup contact in the database and rewrite Request-URI
* \return: -1 : not found
* -2 : found but method not allowed
* -3 : error
*/
int lookup(struct sip_msg* _m, udomain_t* _d, str* _uri)
{
urecord_t* r;
str aor, uri;
sip_uri_t puri;
ucontact_t* ptr = 0;
int res;
int ret;
str path_dst;
flag_t old_bflags;
int i;
str inst = {0};
unsigned int ahash = 0;
sr_xavp_t *xavp=NULL;
sr_xavp_t *list=NULL;
str xname = {"ruid", 4};
sr_xval_t xval;
ret = -1;
if (_m->new_uri.s) uri = _m->new_uri;
else uri = _m->first_line.u.request.uri;
if (extract_aor((_uri)?_uri:&uri, &aor, &puri) < 0) {
LM_ERR("failed to extract address of record\n");
return -3;
}
/* check if gruu */
if(puri.gr.s!=NULL)
{
if(puri.gr_val.len>0) {
/* pub-gruu */
inst = puri.gr_val;
LM_DBG("looking up pub gruu [%.*s]\n", inst.len, inst.s);
} else {
/* temp-gruu */
ahash = 0;
inst = puri.user;
for(i=inst.len-1; i>=0; i--)
{
if(inst.s[i]==REG_GRUU_SEP)
break;
ahash <<= 4;
if(inst.s[i] >='0' && inst.s[i] <='9') ahash+=inst.s[i] -'0';
else if (inst.s[i] >='a' && inst.s[i] <='f') ahash+=inst.s[i] -'a'+10;
else if (inst.s[i] >='A' && inst.s[i] <='F') ahash+=inst.s[i] -'A'+10;
else {
LM_ERR("failed to extract temp gruu - invalid hash\n");
return -3;
}
}
if(i<0) {
LM_ERR("failed to extract temp gruu - invalid format\n");
return -3;
}
inst.len = i;
LM_DBG("looking up temp gruu [%u / %.*s]\n", ahash, inst.len, inst.s);
}
}
get_act_time();
if(puri.gr.s==NULL || puri.gr_val.len>0)
{
/* aor or pub-gruu lookup */
ul.lock_udomain(_d, &aor);
res = ul.get_urecord(_d, &aor, &r);
if (res > 0) {
LM_DBG("'%.*s' Not found in usrloc\n", aor.len, ZSW(aor.s));
ul.unlock_udomain(_d, &aor);
return -1;
}
ptr = r->contacts;
ret = -1;
/* look first for an un-expired and suported contact */
while (ptr) {
if(VALID_CONTACT(ptr,act_time)) {
if(allowed_method(_m,ptr)) {
/* match on instance, if pub-gruu */
if(inst.len>0) {
if(reg_cmp_instances(&inst, &ptr->instance)==0)
{
/* pub-gruu - found by instance */
LM_DBG("contact for [%.*s] found by pub gruu [%.*s]\n",
aor.len, ZSW(aor.s), inst.len, inst.s);
break;
}
} else {
/* no-gruu - found by address */
LM_DBG("contact for [%.*s] found by address\n",
aor.len, ZSW(aor.s));
break;
}
} else {
LM_DBG("contact for [%.*s] cannot handle the SIP method\n",
aor.len, ZSW(aor.s));
ret = -2;
}
}
ptr = ptr->next;
}
if (ptr==0) {
/* nothing found */
LM_DBG("'%.*s' has no valid contact in usrloc\n", aor.len, ZSW(aor.s));
goto done;
}
} else {
/* temp-gruu lookup */
res = ul.get_urecord_by_ruid(_d, ahash, &inst, &r, &ptr);
if(res<0) {
LM_DBG("temp gruu '%.*s' not found in usrloc\n", aor.len, ZSW(aor.s));
return -1;
}
aor = *ptr->aor;
/* test if un-expired and suported contact */
if( (ptr) && !(VALID_CONTACT(ptr,act_time)
&& (ret=-2) && allowed_method(_m,ptr)))
goto done;
LM_DBG("contact for [%.*s] found by temp gruu [%.*s / %u]\n",
aor.len, ZSW(aor.s), inst.len, inst.s, ahash);
}
ret = 1;
if (ptr) {
if (rewrite_uri(_m, &ptr->c) < 0) {
LM_ERR("unable to rewrite Request-URI\n");
ret = -3;
goto done;
}
/* reset next hop address */
reset_dst_uri(_m);
/* add xavp with details of the record (ruid, ...) */
if(reg_xavp_rcd.s!=NULL)
{
list = xavp_get(®_xavp_rcd, NULL);
xavp = list;
memset(&xval, 0, sizeof(sr_xval_t));
xval.type = SR_XTYPE_STR;
xval.v.s = ptr->ruid;
xavp_add_value(&xname, &xval, &xavp);
if(list==NULL)
{
/* no reg_xavp_rcd xavp in root list - add it */
xval.type = SR_XTYPE_XAVP;
xval.v.xavp = xavp;
xavp_add_value(®_xavp_rcd, &xval, NULL);
}
}
/* If a Path is present, use first path-uri in favour of
* received-uri because in that case the last hop towards the uac
* has to handle NAT. - agranig */
if (ptr->path.s && ptr->path.len) {
if (get_path_dst_uri(&ptr->path, &path_dst) < 0) {
LM_ERR("failed to get dst_uri for Path\n");
ret = -3;
goto done;
}
if (set_path_vector(_m, &ptr->path) < 0) {
LM_ERR("failed to set path vector\n");
ret = -3;
goto done;
}
if (set_dst_uri(_m, &path_dst) < 0) {
LM_ERR("failed to set dst_uri of Path\n");
ret = -3;
goto done;
}
} else if (ptr->received.s && ptr->received.len) {
if (set_dst_uri(_m, &ptr->received) < 0) {
ret = -3;
goto done;
}
}
if (ptr->instance.len) {
if (set_instance(_m, &(ptr->instance)) < 0) {
ret = -3;
goto done;
}
}
_m->reg_id = ptr->reg_id;
if (ptr->ruid.len) {
if (set_ruid(_m, &(ptr->ruid)) < 0) {
ret = -3;
goto done;
}
}
if (ptr->user_agent.len) {
if (set_ua(_m, &(ptr->user_agent)) < 0) {
ret = -3;
goto done;
}
}
set_ruri_q(ptr->q);
old_bflags = 0;
getbflagsval(0, &old_bflags);
setbflagsval(0, old_bflags|ptr->cflags);
if (ptr->sock)
set_force_socket(_m, ptr->sock);
if(ptr->xavp!=NULL) {
xavp = xavp_clone_level_nodata(ptr->xavp);
if(xavp_add(xavp, NULL)<0) {
ret = -3;
goto done;
}
}
ptr = ptr->next;
}
/* if was gruu, no more branches */
if(inst.len>0) goto done;
/* Append branches if enabled */
if (!cfg_get(registrar, registrar_cfg, append_branches)) goto done;
for( ; ptr ; ptr = ptr->next ) {
if (VALID_CONTACT(ptr, act_time) && allowed_method(_m, ptr)) {
path_dst.len = 0;
if(ptr->path.s && ptr->path.len
&& get_path_dst_uri(&ptr->path, &path_dst) < 0) {
LM_ERR("failed to get dst_uri for Path\n");
continue;
}
/* The same as for the first contact applies for branches
* regarding path vs. received. */
LM_DBG("instance is %.*s\n",
ptr->instance.len, ptr->instance.s);
if (append_branch(_m, &ptr->c,
path_dst.len?&path_dst:&ptr->received,
&ptr->path, ptr->q, ptr->cflags,
ptr->sock,
ptr->instance.len?&(ptr->instance):0,
ptr->instance.len?ptr->reg_id:0,
&ptr->ruid, &ptr->user_agent)
== -1) {
LM_ERR("failed to append a branch\n");
/* Also give a chance to the next branches*/
continue;
}
if(ptr->xavp!=NULL) {
xavp = xavp_clone_level_nodata(ptr->xavp);
if(xavp_insert(xavp, nr_branches, NULL)<0) {
ret = -3;
goto done;
}
}
}
}
done:
ul.release_urecord(r);
ul.unlock_udomain(_d, &aor);
return ret;
}