/**
* @brief config file function for replicating SIP message to all nodes (wraps t_replicate)
*/
int cfg_dmq_t_replicate(struct sip_msg* msg, char* s)
{
dmq_node_t* node;
struct socket_info* sock;
int i = 0;
int first = 1;
/* avoid loops - do not replicate if message has come from another node
* (override if optional parameter is set)
*/
if ((!s || (get_int_fparam(&i, msg, (fparam_t*)s)==0 && !i))
&& (is_from_remote_node(msg) > 0)) {
LM_DBG("message is from another node - skipping replication\n");
return -1;
}
/* TODO - backup/restore original send socket */
sock = lookup_local_socket(&dmq_server_socket);
if (sock) {
set_force_socket(msg, sock);
}
lock_get(&node_list->lock);
node = node_list->nodes;
while(node) {
/* we do not send the message to the following:
* - ourself
* - any inactive nodes
*/
if(node->local || node->status != DMQ_NODE_ACTIVE) {
LM_DBG("skipping node %.*s\n", STR_FMT(&node->orig_uri));
node = node->next;
continue;
}
if (!first) {
if (append_branch(msg, 0, 0, 0, Q_UNSPECIFIED, 0, sock, 0, 0, 0, 0) == -1) {
LM_ERR("failed to append a branch\n");
node = node->next;
continue;
}
} else {
first = 0;
}
if(tmb.t_replicate(msg, &node->orig_uri) < 0) {
LM_ERR("error calling t_replicate\n");
goto error;
}
node = node->next;
}
lock_release(&node_list->lock);
return 0;
error:
lock_release(&node_list->lock);
return -1;
}
static int ki_set_socket_helper(sip_msg_t *msg, str *ssock, int smode)
{
socket_info_t *si;
int port, proto;
str host;
if(msg==NULL) {
LM_ERR("bad parameters\n");
return -1;
}
if(ssock==NULL || ssock->len<=0) {
reset_force_socket(msg);
return 1;
}
if (parse_phostport(ssock->s, &host.s, &host.len, &port, &proto) < 0) {
LM_ERR("invalid socket specification [%.*s] (%d)\n",
ssock->len, ssock->s, smode);
goto error;
}
si = grep_sock_info(&host, (unsigned short)port, (unsigned short)proto);
if (si!=NULL) {
if(smode==0) {
/* send socket */
set_force_socket(msg, si);
} else {
/* recv socket */
msg->rcv.bind_address = si;
msg->rcv.dst_port = si->port_no;
msg->rcv.dst_ip = si->address;
msg->rcv.proto = si->proto;
msg->rcv.proto_reserved1 = 0;
msg->rcv.proto_reserved2 = 0;
}
} else {
LM_WARN("no socket found to match [%.*s] (%d)\n",
ssock->len, ssock->s, smode);
}
return 1;
error:
return -1;
}
/*!
* \brief Previous hop was a loose router, handle this case
* \param _m SIP message
* \param preloaded do we have a preloaded route set
* \return -1 on failure, 1 on success
*/
static inline int after_loose(struct sip_msg* _m, int preloaded)
{
struct hdr_field* hdr;
struct sip_uri puri;
rr_t* rt;
int res;
int status = RR_DRIVEN;
str uri;
struct socket_info *si;
int uri_is_myself, next_is_strict;
int use_ob = 0;
hdr = _m->route;
rt = (rr_t*)hdr->parsed;
uri = rt->nameaddr.uri;
/* reset rr handling static vars for safety in error case */
routed_msg_id = 0;
if (parse_uri(uri.s, uri.len, &puri) < 0) {
LM_ERR("failed to parse the first route URI\n");
return RR_ERROR;
}
next_is_strict = is_strict(&puri.params);
routed_params = puri.params;
uri_is_myself = is_myself(&puri);
/* IF the URI was added by me, remove it */
if (uri_is_myself>0)
{
LM_DBG("Topmost route URI: '%.*s' is me\n",
uri.len, ZSW(uri.s));
/* set the hooks for the params */
routed_msg_id = _m->id;
if ((use_ob = process_outbound(_m, puri.user)) < 0) {
LM_INFO("failed to process outbound flow-token\n");
return FLOW_TOKEN_BROKEN;
}
if (!rt->next) {
/* No next route in the same header, remove the whole header
* field immediately
*/
if (!del_lump(_m, hdr->name.s - _m->buf, hdr->len, 0)) {
LM_ERR("failed to remove Route HF\n");
return RR_ERROR;
}
res = find_next_route(_m, &hdr);
if (res < 0) {
LM_ERR("failed to find next route\n");
return RR_ERROR;
}
if (res > 0) { /* No next route found */
LM_DBG("No next URI found\n");
status = (preloaded ? NOT_RR_DRIVEN : RR_DRIVEN);
goto done;
}
rt = (rr_t*)hdr->parsed;
} else rt = rt->next;
if (enable_double_rr && is_2rr(&puri.params)) {
/* double route may occure due different IP and port, so force as
* send interface the one advertise in second Route */
if (parse_uri(rt->nameaddr.uri.s,rt->nameaddr.uri.len,&puri)<0) {
LM_ERR("failed to parse the double route URI\n");
return RR_ERROR;
}
if (!use_ob) {
si = grep_sock_info( &puri.host, puri.port_no, puri.proto);
if (si) {
set_force_socket(_m, si);
} else {
if (enable_socket_mismatch_warning)
LM_WARN("no socket found for match second RR\n");
}
}
if (!rt->next) {
/* No next route in the same header, remove the whole header
* field immediately */
if (!del_lump(_m, hdr->name.s - _m->buf, hdr->len, 0)) {
LM_ERR("failed to remove Route HF\n");
return RR_ERROR;
}
res = find_next_route(_m, &hdr);
if (res < 0) {
LM_ERR("failed to find next route\n");
return RR_ERROR;
}
if (res > 0) { /* No next route found */
LM_DBG("no next URI found\n");
status = (preloaded ? NOT_RR_DRIVEN : RR_DRIVEN);
goto done;
}
rt = (rr_t*)hdr->parsed;
} else rt = rt->next;
}
uri = rt->nameaddr.uri;
if (parse_uri(uri.s, uri.len, &puri) < 0) {
LM_ERR("failed to parse the first route URI\n");
return RR_ERROR;
}
} else {
#ifdef ENABLE_USER_CHECK
/* check if it the ignored user */
if(uri_is_myself < 0)
return NOT_RR_DRIVEN;
#endif
LM_DBG("Topmost URI is NOT myself\n");
routed_params.s = NULL;
routed_params.len = 0;
}
LM_DBG("URI to be processed: '%.*s'\n", uri.len, ZSW(uri.s));
if (next_is_strict) {
LM_DBG("Next URI is a strict router\n");
if (handle_sr(_m, hdr, rt) < 0) {
LM_ERR("failed to handle strict router\n");
return RR_ERROR;
}
} else {
/* Next hop is loose router */
LM_DBG("Next URI is a loose router\n");
if (!use_ob) {
if(get_maddr_uri(&uri, &puri)!=0) {
LM_ERR("checking maddr failed\n");
return RR_ERROR;
}
if (set_dst_uri(_m, &uri) < 0) {
LM_ERR("failed to set dst_uri\n");
return RR_ERROR;
}
/* dst_uri changed, so it makes sense to re-use the current uri for
forking */
ruri_mark_new(); /* re-use uri for serial forking */
}
/* There is a previous route uri which was 2nd uri of mine
* and must be removed here */
if (rt != hdr->parsed) {
if (!del_lump(_m, hdr->body.s - _m->buf,
rt->nameaddr.name.s - hdr->body.s, 0)) {
LM_ERR("failed to remove Route HF\n");
return RR_ERROR;
}
}
}
done:
if (use_ob == 1)
status = RR_OB_DRIVEN;
/* run RR callbacks only if we have Route URI parameters */
if(routed_params.len > 0)
run_rr_callbacks( _m, &routed_params );
return status;
}
/*!
* \brief Previous hop was a strict router, handle this case
* \param _m SIP message
* \return -1 on error, 1 on success
*/
static inline int after_strict(struct sip_msg* _m)
{
int res, rem_len;
struct hdr_field* hdr;
struct sip_uri puri;
rr_t* rt, *prev;
char* rem_off;
str uri;
struct socket_info *si;
hdr = _m->route;
rt = (rr_t*)hdr->parsed;
uri = rt->nameaddr.uri;
/* reset rr handling static vars for safety in error case */
routed_msg_id = 0;
routed_params.s = NULL;
routed_params.len = 0;
if (parse_uri(uri.s, uri.len, &puri) < 0) {
LM_ERR("failed to parse the first route URI\n");
return RR_ERROR;
}
if ( enable_double_rr && is_2rr(&puri.params) && is_myself(&puri)) {
/* double route may occure due different IP and port, so force as
* send interface the one advertise in second Route */
si = grep_sock_info( &puri.host, puri.port_no, puri.proto);
if (si) {
set_force_socket(_m, si);
} else {
if (enable_socket_mismatch_warning)
LM_WARN("no socket found for match second RR\n");
}
if (!rt->next) {
/* No next route in the same header, remove the whole header
* field immediately
*/
if (!del_lump(_m, hdr->name.s - _m->buf, hdr->len, 0)) {
LM_ERR("failed to remove Route HF\n");
return RR_ERROR;
}
res = find_next_route(_m, &hdr);
if (res < 0) {
LM_ERR("searching next route failed\n");
return RR_ERROR;
}
if (res > 0) { /* No next route found */
LM_DBG("after_strict: No next URI found\n");
return NOT_RR_DRIVEN;
}
rt = (rr_t*)hdr->parsed;
} else rt = rt->next;
/* parse the new found uri */
uri = rt->nameaddr.uri;
if (parse_uri(uri.s, uri.len, &puri) < 0) {
LM_ERR("failed to parse URI\n");
return RR_ERROR;
}
}
/* set the hooks for the param
* important note: RURI is already parsed by the above function, so
* we just used it without any checking */
routed_msg_id = _m->id;
routed_params = _m->parsed_uri.params;
if (is_strict(&puri.params)) {
LM_DBG("Next hop: '%.*s' is strict router\n", uri.len, ZSW(uri.s));
/* Previous hop was a strict router and the next hop is strict
* router too. There is no need to save R-URI again because it
* is saved already. In fact, in this case we will behave exactly
* like a strict router. */
/* Note: when there is only one Route URI left (endpoint), it will
* always be a strict router because endpoints don't use ;lr parameter
* In this case we will simply put the URI in R-URI and forward it,
* which will work perfectly */
if(get_maddr_uri(&uri, &puri)!=0) {
LM_ERR("failed to check maddr\n");
return RR_ERROR;
}
if (rewrite_uri(_m, &uri) < 0) {
LM_ERR("failed to rewrite request URI\n");
return RR_ERROR;
}
if (rt->next) {
rem_off = hdr->body.s;
rem_len = rt->next->nameaddr.name.s - hdr->body.s;
} else {
rem_off = hdr->name.s;
rem_len = hdr->len;
}
if (!del_lump(_m, rem_off - _m->buf, rem_len, 0)) {
LM_ERR("failed to remove Route HF\n");
return RR_ERROR;
}
} else {
LM_DBG("Next hop: '%.*s' is loose router\n",
uri.len, ZSW(uri.s));
if(get_maddr_uri(&uri, &puri)!=0) {
LM_ERR("failed to check maddr\n");
return RR_ERROR;
}
if (set_dst_uri(_m, &uri) < 0) {
LM_ERR("failed to set dst_uri\n");
return RR_ERROR;
}
/* Next hop is a loose router - Which means that is is not endpoint yet
* In This case we have to recover from previous strict routing, that
* means we have to find the last Route URI and put in in R-URI and
* remove the last Route URI. */
if (rt != hdr->parsed) {
/* There is a previous route uri which was 2nd uri of mine
* and must be removed here */
rem_off = hdr->body.s;
rem_len = rt->nameaddr.name.s - hdr->body.s;
if (!del_lump(_m, rem_off - _m->buf, rem_len, 0)) {
LM_ERR("failed to remove Route HF\n");
return RR_ERROR;
}
}
res = find_rem_target(_m, &hdr, &rt, &prev);
if (res < 0) {
LM_ERR("searching for last Route URI failed\n");
return RR_ERROR;
} else if (res > 0) {
/* No remote target is an error */
return RR_ERROR;
}
uri = rt->nameaddr.uri;
if(get_maddr_uri(&uri, 0)!=0) {
LM_ERR("checking maddr failed\n");
return RR_ERROR;
}
if (rewrite_uri(_m, &uri) < 0) {
LM_ERR("failed to rewrite R-URI\n");
return RR_ERROR;
}
/* The first character if uri will be either '<' when it is the
* only URI in a Route header field or ',' if there is more than
* one URI in the header field */
LM_DBG("The last route URI: '%.*s'\n", rt->nameaddr.uri.len,
ZSW(rt->nameaddr.uri.s));
if (prev) {
rem_off = prev->nameaddr.name.s + prev->len;
rem_len = rt->nameaddr.name.s + rt->len - rem_off;
} else {
rem_off = hdr->name.s;
rem_len = hdr->len;
}
if (!del_lump(_m, rem_off - _m->buf, rem_len, 0)) {
LM_ERR("failed to remove Route HF\n");
return RR_ERROR;
}
}
/* run RR callbacks only if we have Route URI parameters */
if(routed_params.len > 0)
run_rr_callbacks( _m, &routed_params );
return RR_DRIVEN;
}
/*!
* \brief Perform outbound processing - force local socket and set destination URI
* \param _m SIP message
* \param flow_token string containing the flow-token extracted from the Route: header
* \param dst_uri string to write the destination URI to (extracted from flow-token)
* \return -1 on error, 0 when outbound not in use, 1 when outbound in use
*/
static inline int process_outbound(struct sip_msg *_m, str flow_token)
{
int ret;
struct receive_info *rcv = NULL;
struct socket_info *si;
str dst_uri;
if (!rr_obb.decode_flow_token)
return 0;
ret = rr_obb.decode_flow_token(_m, &rcv, flow_token);
if (ret == -2) {
LM_DBG("no flow token found - outbound not in use\n");
return 0;
} else if (ret == -1) {
LM_INFO("failed to decode flow token\n");
return -1;
} else if (!ip_addr_cmp(&rcv->src_ip, &_m->rcv.src_ip)
|| rcv->src_port != _m->rcv.src_port) {
LM_DBG("\"incoming\" request found. Using flow-token for"
"routing\n");
/* First, force the local socket */
si = find_si(&rcv->dst_ip, rcv->dst_port, rcv->proto);
if (si)
set_force_socket(_m, si);
else {
LM_INFO("cannot find socket from flow-token\n");
return -1;
}
/* Second, override the destination URI */
dst_uri.s = uri_buf;
dst_uri.len = 0;
dst_uri.len += snprintf(dst_uri.s + dst_uri.len,
MAX_ROUTE_URI_LEN - dst_uri.len,
"sip:%s",
rcv->src_ip.af == AF_INET6 ? "[" : "");
dst_uri.len += ip_addr2sbuf(&rcv->src_ip,
dst_uri.s + dst_uri.len,
MAX_ROUTE_URI_LEN - dst_uri.len);
dst_uri.len += snprintf(dst_uri.s + dst_uri.len,
MAX_ROUTE_URI_LEN - dst_uri.len,
"%s:%d;transport=%s",
rcv->src_ip.af == AF_INET6 ? "]" : "",
rcv->src_port,
get_proto_name(rcv->proto));
if (set_dst_uri(_m, &dst_uri) < 0) {
LM_ERR("failed to set dst_uri\n");
return -1;
}
ruri_mark_new();
return 1;
}
LM_DBG("Not using flow-token for routing\n");
return 0;
}
/*! \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) {
impurecord_t* r;
str aor, uri;
ucontact_t* ptr;
int res;
int ret;
str path_dst;
flag_t old_bflags;
int i = 0;
if (_m->new_uri.s) uri = _m->new_uri;
else uri = _m->first_line.u.request.uri;
if (extract_aor(&uri, &aor) < 0) {
LM_ERR("failed to extract address of record\n");
return -3;
}
get_act_time();
ul.lock_udomain(_d, &aor);
res = ul.get_impurecord(_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;
}
ret = -1;
while (i < MAX_CONTACTS_PER_IMPU && (ptr = r->newcontacts[i])) {
if (VALID_CONTACT(ptr, act_time) && allowed_method(_m, ptr)) {
LM_DBG("Found a valid contact [%.*s]\n", ptr->c.len, ptr->c.s);
i++;
break;
}
i++;
}
/* look first for an un-expired and suported contact */
if (ptr == 0) {
/* nothing found */
goto done;
}
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);
/* 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;
}
}
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);
ptr = ptr->next;
}
/* Append branches if enabled */
if (!cfg_get(registrar, registrar_cfg, append_branches)) goto done;
//the last i was the first valid contact we found - let's go through the rest of valid contacts and append the branches.
while (i < MAX_CONTACTS_PER_IMPU && (ptr = r->newcontacts[i])) {
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. */
if (km_append_branch(_m, &ptr->c, path_dst.len ? &path_dst : &ptr->received,
&ptr->path, ptr->q, ptr->cflags, ptr->sock) == -1) {
LM_ERR("failed to append a branch\n");
/* Also give a chance to the next branches*/
continue;
}
}
i++;
}
done:
ul.unlock_udomain(_d, &aor);
return ret;
}
/*
* Lookup contact in the database and rewrite Request-URI
*/
int lookup(struct sip_msg* _m, char* _t, char* _s)
{
urecord_t* r;
str uid;
ucontact_t* ptr;
int res;
unsigned int nat;
str new_uri;
nat = 0;
if (get_to_uid(&uid, _m) < 0) return -1;
get_act_time();
ul.lock_udomain((udomain_t*)_t);
res = ul.get_urecord((udomain_t*)_t, &uid, &r);
if (res < 0) {
LOG(L_ERR, "lookup(): Error while querying usrloc\n");
ul.unlock_udomain((udomain_t*)_t);
return -2;
}
if (res > 0) {
DBG("lookup(): '%.*s' Not found in usrloc\n", uid.len, ZSW(uid.s));
ul.unlock_udomain((udomain_t*)_t);
return -3;
}
ptr = r->contacts;
while ((ptr) && !VALID_CONTACT(ptr, act_time))
ptr = ptr->next;
if (ptr) {
if (ptr->received.s && ptr->received.len) {
if (received_to_uri){
if (add_received(&new_uri, &ptr->c, &ptr->received)<0){
LOG(L_ERR, "ERROR: lookup(): out of memory\n");
return -4;
}
/* replace the msg uri */
if (_m->new_uri.s) pkg_free(_m->new_uri.s);
_m->new_uri=new_uri;
_m->parsed_uri_ok=0;
ruri_mark_new();
goto skip_rewrite_uri;
}else if (set_dst_uri(_m, &ptr->received) < 0) {
ul.unlock_udomain((udomain_t*)_t);
return -4;
}
}
if (rewrite_uri(_m, &ptr->c) < 0) {
LOG(L_ERR, "lookup(): Unable to rewrite Request-URI\n");
ul.unlock_udomain((udomain_t*)_t);
return -4;
}
if (ptr->sock) {
set_force_socket(_m, ptr->sock);
}
skip_rewrite_uri:
set_ruri_q(ptr->q);
nat |= ptr->flags & FL_NAT;
ptr = ptr->next;
} else {
/* All contacts expired */
ul.unlock_udomain((udomain_t*)_t);
return -5;
}
/* Append branches if enabled */
if (!append_branches) goto skip;
while(ptr) {
if (VALID_CONTACT(ptr, act_time)) {
if (received_to_uri && ptr->received.s && ptr->received.len){
if (add_received(&new_uri, &ptr->c, &ptr->received)<0){
LOG(L_ERR, "ERROR: lookup(): branch: out of memory\n");
goto cont; /* try to continue */
}
if (append_branch(_m, &new_uri, 0, 0, ptr->q, 0, 0) == -1) {
LOG(L_ERR, "lookup(): Error while appending a branch\n");
pkg_free(new_uri.s);
if (ser_error==E_TOO_MANY_BRANCHES) goto skip;
else goto cont; /* try to continue, maybe we have an
oversized contact */
}
pkg_free(new_uri.s); /* append_branch doesn't free it */
}else{
if (append_branch(_m, &ptr->c, &ptr->received, 0 /* path */,
ptr->q, 0 /* brflags*/, ptr->sock) == -1) {
LOG(L_ERR, "lookup(): Error while appending a branch\n");
goto skip; /* Return OK here so the function succeeds */
}
}
nat |= ptr->flags & FL_NAT;
}
cont:
ptr = ptr->next;
}
skip:
ul.unlock_udomain((udomain_t*)_t);
if (nat) setflag(_m, load_nat_flag);
return 1;
}
/*
* Lookup contact in the database and rewrite Request-URI,
* and filter them by aor
*/
int lookup2(struct sip_msg* msg, char* table, char* p2)
{
urecord_t* r;
str uid;
ucontact_t* ptr;
int res;
unsigned int nat;
str new_uri, aor;
fparam_t* fp;
nat = 0;
fp = (fparam_t*)p2;
if (get_str_fparam(&aor, msg, (fparam_t*)p2) != 0) {
ERR("Unable to get the AOR value\n");
return -1;
}
if (get_to_uid(&uid, msg) < 0) return -1;
get_act_time();
ul.lock_udomain((udomain_t*)table);
res = ul.get_urecord((udomain_t*)table, &uid, &r);
if (res < 0) {
ERR("Error while querying usrloc\n");
ul.unlock_udomain((udomain_t*)table);
return -2;
}
if (res > 0) {
DBG("'%.*s' Not found in usrloc\n", uid.len, ZSW(uid.s));
ul.unlock_udomain((udomain_t*)table);
return -3;
}
ptr = r->contacts;
while (ptr && (!VALID_CONTACT(ptr, act_time) || !VALID_AOR(ptr, aor)))
ptr = ptr->next;
if (ptr) {
if (ptr->received.s && ptr->received.len) {
if (received_to_uri){
if (add_received(&new_uri, &ptr->c, &ptr->received) < 0) {
ERR("Out of memory\n");
return -4;
}
/* replace the msg uri */
if (msg->new_uri.s) pkg_free(msg->new_uri.s);
msg->new_uri = new_uri;
msg->parsed_uri_ok = 0;
ruri_mark_new();
goto skip_rewrite_uri;
} else if (set_dst_uri(msg, &ptr->received) < 0) {
ul.unlock_udomain((udomain_t*)table);
return -4;
}
}
if (rewrite_uri(msg, &ptr->c) < 0) {
ERR("Unable to rewrite Request-URI\n");
ul.unlock_udomain((udomain_t*)table);
return -4;
}
if (ptr->sock) {
set_force_socket(msg, ptr->sock);
}
skip_rewrite_uri:
set_ruri_q(ptr->q);
nat |= ptr->flags & FL_NAT;
ptr = ptr->next;
} else {
/* All contacts expired */
ul.unlock_udomain((udomain_t*)table);
return -5;
}
/* Append branches if enabled */
if (!append_branches) goto skip;
while(ptr) {
if (VALID_CONTACT(ptr, act_time) && VALID_AOR(ptr, aor)) {
if (received_to_uri && ptr->received.s && ptr->received.len) {
if (add_received(&new_uri, &ptr->c, &ptr->received) < 0) {
ERR("branch: out of memory\n");
goto cont; /* try to continue */
}
if (append_branch(msg, &new_uri, 0, 0, ptr->q, 0, 0) == -1) {
ERR("Error while appending a branch\n");
pkg_free(new_uri.s);
if (ser_error == E_TOO_MANY_BRANCHES) goto skip;
else goto cont; /* try to continue, maybe we have an
oversized contact */
}
pkg_free(new_uri.s); /* append_branch doesn't free it */
} else {
if (append_branch(msg, &ptr->c, &ptr->received, 0 /* path */,
ptr->q, 0, ptr->sock) == -1) {
ERR("Error while appending a branch\n");
goto skip; /* Return OK here so the function succeeds */
}
}
nat |= ptr->flags & FL_NAT;
}
cont:
ptr = ptr->next;
}
skip:
ul.unlock_udomain((udomain_t*)table);
if (nat) setflag(msg, load_nat_flag);
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 Apply DP-DDDS policy to current SIP message
*
* Apply DP-DDDS policy to current SIP message. This means
* build a new destination URI from the policy AVP and export it
* as AVP. Then in kamailio.cfg this new target AVP can be pushed
* into the destination URI $duri
* \param _msg SIP message
* \param _s1 unused
* \param _s2 unused
* \return negative on failure, positive on succes
*/
int dp_apply_policy(struct sip_msg* _msg, char* _s1, char* _s2) {
str *domain;
int_str val;
struct usr_avp *avp;
char duri[MAX_URI_SIZE];
str duri_str;
int len, didsomething;
char *at; /* pointer to current location inside duri */
str host;
int port, proto;
struct socket_info* si;
if (!is_route_type(REQUEST_ROUTE)) {
LM_ERR("unsupported route type\n");
return -1;
}
/*
* set the send_socket
*/
/* search for send_socket AVP */
avp = search_first_avp(send_socket_avp_name_str, send_socket_name, &val, 0);
if (avp) {
if ( !(avp->flags&AVP_VAL_STR) || !val.s.s || !val.s.len) {
LM_ERR("empty or non-string send_socket_avp, "
"return with error ...\n");
return -1;
}
LM_DBG("send_socket_avp found = '%.*s'\n", val.s.len, ZSW(val.s.s));
/* parse phostport - AVP str val is asciiz */
/* FIXME: This code relies on the fact that the string value of an AVP
* is zero terminated, which may or may not be true in the future */
if (parse_phostport(val.s.s, &(host.s), &(host.len), &port, &proto)) {
LM_ERR("could not parse send_socket, return with error ...\n");
return -1;
}
si = grep_sock_info( &host, (unsigned short) port, (unsigned short) proto);
if (si) {
set_force_socket(_msg, si);
} else {
LM_WARN("could not find socket for"
"send_socket '%.*s'\n", val.s.len, ZSW(val.s.s));
}
} else {
LM_DBG("send_socket_avp not found\n");
}
/*
* set the destination URI
*/
didsomething = 0; /* if no AVP is set, there is no need to set the DURI in the end */
if (parse_sip_msg_uri(_msg) < 0) {
LM_ERR("failed to parse R-URI\n");
return -1;
}
at = (char *)&(duri[0]);
len = 0;
if ( (len + 4) > MAX_URI_SIZE) {
LM_ERR("duri buffer to small to add uri schema\n");
return -1;
}
memcpy(at, "sip:", 4); at = at + 4; len = len + 4;
domain = &(_msg->parsed_uri.host);
LM_DBG("domain is %.*s.\n", domain->len, ZSW(domain->s));
/* search for prefix and add it to duri buffer */
avp = search_first_avp(domain_prefix_avp_name_str, domain_prefix_name, &val, 0);
if (avp) {
if ( !(avp->flags&AVP_VAL_STR) || !val.s.s || !val.s.len) {
LM_ERR("empty or non-string domain_prefix_avp, return with error ...\n");
return -1;
}
LM_DBG("domain_prefix_avp found = '%.*s'\n", val.s.len, ZSW(val.s.s));
if ( (len + val.s.len +1) > MAX_URI_SIZE) {
LM_ERR("duri buffer to small to add domain prefix\n");
return -1;
}
memcpy(at, val.s.s, val.s.len); at = at + val.s.len;
*at = '.'; at = at + 1; /* add . as delimiter between prefix and domain */
didsomething = 1;
} else {
LM_DBG("domain_prefix_avp not found\n");
}
/* add domain to duri buffer */
avp = search_first_avp(domain_replacement_avp_name_str, domain_replacement_name, &val, 0);
if (avp) {
if ( !(avp->flags&AVP_VAL_STR) || !val.s.s || !val.s.len) {
LM_ERR("empty or non-string domain_replacement_avp, return with"
"error ...\n");
return -1;
}
LM_DBG("domain_replacement_avp found='%.*s'\n",val.s.len, ZSW(val.s.s));
if ( (len + val.s.len +1) > MAX_URI_SIZE) {
LM_ERR("duri buffer to small to add domain replacement\n");
return -1;
}
memcpy(at, val.s.s, val.s.len); at = at + val.s.len;
didsomething = 1;
} else {
LM_DBG("domain_replacement_avp not found, using original domain '"
"%.*s'\n",domain->len, domain->s);
if ( (len + domain->len) > MAX_URI_SIZE) {
LM_ERR("duri buffer to small to add domain\n");
return -1;
}
memcpy(at, domain->s, domain->len); at = at + domain->len;
}
/* search for suffix and add it to duri buffer */
avp = search_first_avp(domain_suffix_avp_name_str, domain_suffix_name, &val, 0);
if (avp) {
if ( !(avp->flags&AVP_VAL_STR) || !val.s.s || !val.s.len) {
LM_ERR("empty or non-string domain_suffix_avp,return with error .."
"\n");
return -1;
}
LM_DBG("domain_suffix_avp found = '%.*s'\n", val.s.len, ZSW(val.s.s));
if ( (len + val.s.len + 1) > MAX_URI_SIZE) {
LM_ERR("duri buffer to small to add domain suffix\n");
return -1;
}
*at = '.'; at = at + 1; /* add . as delimiter between domain and suffix */
memcpy(at, val.s.s, val.s.len); at = at + val.s.len;
didsomething = 1;
} else {
LM_DBG("domain_suffix_avp not found\n");
}
/* search for port override and add it to duri buffer */
avp = search_first_avp(port_override_avp_name_str, port_override_name, &val, 0);
if (avp) {
if ( !(avp->flags&AVP_VAL_STR) || !val.s.s || !val.s.len) {
LM_ERR("empty or non-string port_override_avp, return with error ...\n");
return -1;
}
LM_DBG("port_override_avp found = '%.*s'\n", val.s.len, ZSW(val.s.s));
/* We do not check if the port is valid */
if ( (len + val.s.len + 1) > MAX_URI_SIZE) {
LM_ERR("duri buffer to small to add domain suffix\n");
return -1;
}
*at = ':'; at = at + 1; /* add : as delimiter between domain and port */
memcpy(at, val.s.s, val.s.len); at = at + val.s.len;
didsomething = 1;
} else {
LM_DBG("port_override_avp not found, using original port\n");
if (_msg->parsed_uri.port.len) {
LM_DBG("port found in RURI, reusing it for DURI\n");
if ( (len + _msg->parsed_uri.port.len + 1) > MAX_URI_SIZE) {
LM_ERR("duri buffer to small to copy port\n");
return -1;
}
*at = ':'; at = at + 1;
/* add : as delimiter between domain and port */
memcpy(at, _msg->parsed_uri.port.s, _msg->parsed_uri.port.len);
at = at + _msg->parsed_uri.port.len;
} else {
LM_DBG("port not found in RURI, no need to copy it to DURI\n");
}
}
/* search for transport override and add it to duri buffer */
avp = search_first_avp(transport_override_avp_name_str, transport_override_name, &val, 0);
if (avp) {
if ( !(avp->flags&AVP_VAL_STR) || !val.s.s || !val.s.len) {
LM_ERR("empty or non-string transport_override_avp, "
"return with error ...\n");
return -1;
}
LM_DBG("transport_override_avp found='%.*s'\n",val.s.len, ZSW(val.s.s));
if ( (len + val.s.len + 11) > MAX_URI_SIZE) {
LM_ERR("duri buffer to small to add transport override\n");
return -1;
}
/* add : as transport parameter to duri; NOTE: no checks if transport parameter is valid */
memcpy(at, ";transport=", 11); at = at + 11;
memcpy(at, val.s.s, val.s.len); at = at + val.s.len;
didsomething = 1;
} else {
LM_DBG("transport_override_avp not found, using original transport\n");
if (_msg->parsed_uri.transport.len) {
LM_DBG("transport found in RURI, reusing it for DURI\n");
if ( (len + _msg->parsed_uri.transport.len + 1) > MAX_URI_SIZE) {
LM_ERR("duri buffer to small to copy transport\n");
return -1;
}
*at = ';'; at = at + 1; /* add : as delimiter between domain and port */
memcpy(at, _msg->parsed_uri.transport.s, _msg->parsed_uri.transport.len); at = at + _msg->parsed_uri.transport.len;
} else {
LM_DBG("transport not found in RURI, no need to copy it to DURI\n");
}
}
/* write new target DURI into DURI */
if (didsomething == 0) {
LM_DBG("no domainpolicy AVP set, no need to push new DURI\n");
return 2;
}
duri_str.s = (char *)&(duri[0]);
duri_str.len = at - duri_str.s;
LM_DBG("new DURI is '%.*s'\n",duri_str.len, ZSW(duri_str.s));
if(set_dst_uri(_msg, &duri_str)<0) {
LM_ERR("failed to se dst uri\n");
return -1;
}
/* dst_uri changes, so it makes sense to re-use the current uri for
forking */
ruri_mark_new(); /* re-use uri for serial forking */
return 1;
}
/* Actions are composed as follows:
* (the action length and type as always= 5 bytes)
*
* TODO performance speedup: instead of using
* dynamically allocated memory for headers,body,totag,reason and my_msg
* use static buffers.
*
*/
int ac_sl_msg(as_p the_as,unsigned char processor_id,unsigned int flags,char *action,int len)
{
struct sip_msg *my_msg;
str *uri;
struct proxy_l *proxy;
rr_t *my_route;
int k,retval;
//enum sip_protos proto;
my_msg=NULL;
k=0;
proxy=0;
if(!(my_msg = parse_ac_msg(HDR_EOH_F,action+k,len-k))){
LM_ERR("out of memory!\n");
goto error;
}
if(my_msg->first_line.type == SIP_REQUEST)
LM_DBG("forwarding request:\"%.*s\" statelessly \n",my_msg->first_line.u.request.method.len+1+\
my_msg->first_line.u.request.uri.len,my_msg->first_line.u.request.method.s);
else
LM_DBG("forwarding reply:\"%.*s\" statelessly \n",my_msg->first_line.u.reply.status.len+1+\
my_msg->first_line.u.reply.reason.len,my_msg->first_line.u.reply.status.s);
if (my_msg->route) {
if (parse_rr(my_msg->route) < 0) {
LM_ERR( "Error while parsing Route body\n");
goto error;
}
my_route = (rr_t*)my_msg->route->parsed;
uri=&(my_route->nameaddr.uri);
}else{
uri = GET_RURI(my_msg);
}
set_force_socket(my_msg, grep_sock_info(&my_msg->via1->host,
my_msg->via1->port,
my_msg->via1->proto) );
/* or also could be:
my_msg->force_send_socket=the_as->binds[processor_id].bind_address;
not sure which is better...
*/
/*proxy=uri2proxy(uri,PROTO_NONE);
if (proxy==0) {
LM_ERR("unable to create proxy from URI \n");
goto error;
}
proto=proxy->proto;
*/
//TODO my_msg->recvd
if(0>forward_sl_request(my_msg,uri,PROTO_NONE))
goto error;
retval=0;
goto exit;
error:
retval = -1;
exit:
if(proxy){
free_proxy(proxy);
pkg_free(proxy);
}
if(my_msg){
free_sip_msg_lite(my_msg);
pkg_free(my_msg);
}
return retval;
}
/*! \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;
}
/*! \brief
* Lookup contacts in the database for all branches, including R-URI
* \return: -1 : not found
* -2 : found but method not allowed (for r-uri)
* -3 : error
*/
int lookup_branches(sip_msg_t *msg, udomain_t *d)
{
unsigned int nr_branches_start;
unsigned int i;
int ret;
int found;
str new_uri;
str ruri_b_uri = {0};
str ruri_b_dst_uri = {0};
str ruri_b_path = {0};
int ruri_b_q = Q_UNSPECIFIED;
struct socket_info *ruri_b_socket = 0;
flag_t ruri_b_flags = 0;
str ruri_b_instance = {0};
unsigned int ruri_b_reg_id = 0;
str ruri_b_ruid = {0};
str ruri_b_ua = {0};
branch_t *crt = NULL;
ret = 1;
found = 0;
nr_branches_start = nr_branches;
/* first lookup the r-uri */
ret = lookup(msg, d, NULL);
/* if no other branches -- all done */
if(nr_branches_start==0)
return ret;
if(ret>0)
found = 1;
/* backup r-uri branch */
ruri_b_uri = msg->new_uri;
ruri_b_dst_uri = msg->dst_uri;
ruri_b_path = msg->path_vec;
ruri_b_q = get_ruri_q();
ruri_b_socket = msg->force_send_socket;
getbflagsval(0, &ruri_b_flags);
ruri_b_instance = msg->instance;
ruri_b_reg_id = msg->reg_id;
ruri_b_ruid = msg->ruid;
ruri_b_ua = msg->location_ua;
reset_ruri_branch(msg);
/* set new uri buf to null, otherwise is freed or overwritten by
* rewrite_uri() during branch lookup */
msg->new_uri.len=0;
msg->new_uri.s=0;
msg->parsed_uri_ok=0;
for(i=0; i<nr_branches_start; i++) {
crt = get_sip_branch(i);
/* it has to be a clean branch to do lookup for it */
if(crt->len <= 0 || crt->dst_uri_len > 0
|| crt->path_len > 0 || crt->force_send_socket!=NULL
|| crt->flags !=0)
continue;
/* set the new uri from branch and lookup */
new_uri.s = crt->uri;
new_uri.len = crt->len;
if (rewrite_uri(msg, &new_uri) < 0) {
LM_ERR("unable to rewrite Request-URI for branch %u\n", i);
ret = -3;
goto done;
}
ret = lookup(msg, d, NULL);
if(ret>0) {
/* move r-uri branch attributes to crt branch */
found = 1;
if (unlikely(msg->new_uri.len > MAX_URI_SIZE - 1)) {
LM_ERR("too long uri: %.*s\n", msg->new_uri.len,
msg->new_uri.s);
ret = -3;
goto done;
}
/* copy the dst_uri */
if (msg->dst_uri.len>0 && msg->dst_uri.s!=NULL) {
if (unlikely(msg->dst_uri.len > MAX_URI_SIZE - 1)) {
LM_ERR("too long dst_uri: %.*s\n", msg->dst_uri.len,
msg->dst_uri.s);
ret = -3;
goto done;
}
memcpy(crt->dst_uri, msg->dst_uri.s, msg->dst_uri.len);
crt->dst_uri[msg->dst_uri.len] = 0;
crt->dst_uri_len = msg->dst_uri.len;
}
/* copy the path string */
if (unlikely(msg->path_vec.len>0 && msg->path_vec.s!=NULL)) {
if (unlikely(msg->path_vec.len > MAX_PATH_SIZE - 1)) {
LM_ERR("too long path: %.*s\n", msg->path_vec.len,
msg->path_vec.s);
ret = -3;
goto done;
}
memcpy(crt->path, msg->path_vec.s, msg->path_vec.len);
crt->path[msg->path_vec.len] = 0;
crt->path_len = msg->path_vec.len;
}
/* copy the ruri */
memcpy(crt->uri, msg->new_uri.s, msg->new_uri.len);
crt->uri[msg->new_uri.len] = 0;
crt->len = msg->new_uri.len;
crt->q = get_ruri_q();
crt->force_send_socket = msg->force_send_socket;
getbflagsval(0, &crt->flags);
}
reset_ruri_branch(msg);
}
done:
reset_ruri_branch(msg);
/* new uri could be set to allocated buffer by branch lookup */
if(msg->new_uri.s!=NULL)
pkg_free(msg->new_uri.s);
msg->new_uri = ruri_b_uri;
ruri_mark_new();
msg->parsed_uri_ok = 0;
msg->dst_uri = ruri_b_dst_uri;
msg->path_vec = ruri_b_path;
set_ruri_q(ruri_b_q);
set_force_socket(msg, ruri_b_socket);
setbflagsval(0, ruri_b_flags);
msg->instance = ruri_b_instance;
msg->reg_id = ruri_b_reg_id;
msg->ruid = ruri_b_ruid;
msg->location_ua = ruri_b_ua;
return (found)?1:ret;
}
/*
* Adds to request a new destination set that includes all highest
* priority class contacts in contacts_avp. Request URI is rewritten with
* first contact and the remaining contacts (if any) are added as branches.
* Removes used contacts from contacts_avp. Returns 1, if contacts_avp
* was not empty and a destination set was successfully added. Returns -2,
* if contacts_avp was empty and thus there was nothing to do.
* Returns -1 in case of an error. */
int t_next_contacts(struct sip_msg* msg, char* key, char* value)
{
struct usr_avp *avp, *prev;
int_str val;
str uri, dst, path;
struct socket_info *sock;
unsigned int flags;
struct search_state st;
/* Check if contacts_avp has been defined */
if (contacts_avp.n == 0) {
LM_ERR("feature has been disabled - "
"to enable define contacts_avp module parameter");
return -1;
}
/* Load Request-URI and branches */
/* Find first contacts_avp value */
avp = search_first_avp(contacts_avp_type, contacts_avp, &val, &st);
if (!avp) {
LM_DBG("no AVPs - we are done!\n");
return -2;
}
LM_DBG("next contact is <%.*s>\n", STR_FMT(&val.s));
if (decode_branch_info(val.s.s, &uri, &dst, &path, &sock, &flags)
== 0) {
LM_ERR("decoding of branch info <%.*s> failed\n", STR_FMT(&val.s));
destroy_avp(avp);
return -1;
}
/* Rewrite Request-URI */
rewrite_uri(msg, &uri);
if (dst.s && dst.len) set_dst_uri(msg, &dst);
else reset_dst_uri(msg);
if (path.s && path.len) set_path_vector(msg, &path);
else reset_path_vector(msg);
set_force_socket(msg, sock);
setbflagsval(0, flags);
if (avp->flags & Q_FLAG) {
destroy_avp(avp);
return 1;
}
/* Append branches until out of branches or Q_FLAG is set */
prev = avp;
while ((avp = search_next_avp(&st, &val))) {
destroy_avp(prev);
LM_DBG("next contact is <%.*s>\n", STR_FMT(&val.s));
if (decode_branch_info(val.s.s, &uri, &dst, &path, &sock, &flags)
== 0) {
LM_ERR("decoding of branch info <%.*s> failed\n", STR_FMT(&val.s));
destroy_avp(avp);
return -1;
}
if (append_branch(msg, &uri, &dst, &path, 0, flags, sock) != 1) {
LM_ERR("appending branch failed\n");
destroy_avp(avp);
return -1;
}
if (avp->flags & Q_FLAG) {
destroy_avp(avp);
return 1;
}
prev = avp;
}
destroy_avp(prev);
return 1;
}
int rtjson_init_serial(sip_msg_t *msg, srjson_doc_t *jdoc, sr_xavp_t *iavp)
{
srjson_t *tj = NULL;
srjson_t *nj = NULL;
srjson_t *rj = NULL;
str val;
unsigned int bflags = 0;
unsigned int old_bflags = 0;
struct socket_info* fsocket = NULL;
tj = srjson_GetObjectItem(jdoc, jdoc->root, "routes");
if(tj==NULL || tj->type!=srjson_Array || tj->child==NULL) {
LM_ERR("missing or invalid routes field\n");
goto error;
}
nj = tj->child;
clear_branches();
rj = srjson_GetObjectItem(jdoc, nj, "uri");
if(rj!=NULL && rj->type==srjson_String && rj->valuestring!=NULL) {
val.s = rj->valuestring;
val.len = strlen(val.s);
LM_DBG("rewrite r-uri to: [%.*s]\n", val.len, val.s);
if (rewrite_uri(msg, &val) < 0) {
LM_ERR("unable to rewrite Request-URI\n");
goto error;
}
}
reset_dst_uri(msg);
reset_path_vector(msg);
reset_instance(msg);
reset_ruid(msg);
reset_ua(msg);
reset_force_socket(msg);
msg->reg_id = 0;
set_ruri_q(0);
rj = srjson_GetObjectItem(jdoc, nj, "dst_uri");
if(rj!=NULL && rj->type==srjson_String && rj->valuestring!=NULL) {
val.s = rj->valuestring;
val.len = strlen(val.s);
LM_DBG("rewrite dst-uri to: [%.*s]\n", val.len, val.s);
if (set_dst_uri(msg, &val) < 0) {
LM_ERR("unable to set destination uri\n");
goto error;
}
}
rj = srjson_GetObjectItem(jdoc, nj, "path");
if(rj!=NULL && rj->type==srjson_String && rj->valuestring!=NULL) {
val.s = rj->valuestring;
val.len = strlen(val.s);
LM_DBG("rewrite path to: [%.*s]\n", val.len, val.s);
if (set_path_vector(msg, &val) < 0) {
LM_ERR("unable to set path\n");
goto error;
}
}
rj = srjson_GetObjectItem(jdoc, nj, "socket");
if(rj!=NULL && rj->type==srjson_String && rj->valuestring!=NULL) {
val.s = rj->valuestring;
val.len = strlen(val.s);
LM_DBG("trying to set send socket to: [%.*s]\n", val.len, val.s);
fsocket = lookup_local_socket(&val);
if(fsocket) {
set_force_socket(msg, fsocket);
}
}
rj = srjson_GetObjectItem(jdoc, nj, "branch_flags");
if(rj!=NULL && rj->type==srjson_Number && SRJSON_GET_UINT(rj)!=0) {
bflags = SRJSON_GET_UINT(rj);
old_bflags = 0;
getbflagsval(0, &old_bflags);
setbflagsval(0, old_bflags|bflags);
}
iavp->val.v.i++;
return 0;
error:
return -1;
}
