/**
* @brief check 'media' matches the value of any 'm=value ...' lines
* @return -1 - error; 0 - not found; 1 - found
*/
static int sdp_with_media(sip_msg_t *msg, str *media)
{
sdp_info_t *sdp = NULL;
int sdp_session_num;
int sdp_stream_num;
sdp_session_cell_t* sdp_session;
sdp_stream_cell_t* sdp_stream;
if(parse_sdp(msg) < 0) {
LM_ERR("Unable to parse sdp\n");
return -1;
}
LM_DBG("attempting to search for media type: [%.*s]\n",
media->len, media->s);
sdp = (sdp_info_t*)msg->body;
sdp_session_num = 0;
for(;;)
{
sdp_session = get_sdp_session(msg, sdp_session_num);
if(!sdp_session) break;
sdp_stream_num = 0;
for(;;)
{
sdp_stream = get_sdp_stream(msg, sdp_session_num, sdp_stream_num);
if(!sdp_stream) break;
LM_DBG("stream %d of %d - media [%.*s]\n",
sdp_stream_num, sdp_session_num,
sdp_stream->media.len, sdp_stream->media.s);
if(media->len==sdp_stream->media.len
&& strncasecmp(sdp_stream->media.s, media->s,
media->len)==0)
return 1;
sdp_stream_num++;
}
sdp_session_num++;
}
return 0;
}
/** Helper function for adding media component AVPs for each SDP stream*/
int add_media_components(AAAMessage* aar, struct sip_msg *req,
struct sip_msg *rpl, enum dialog_direction direction, AAASession* auth) {
int sdp_session_num;
int sdp_stream_num;
sdp_session_cell_t* req_sdp_session, *rpl_sdp_session;
sdp_stream_cell_t* req_sdp_stream, *rpl_sdp_stream;
int add_flow = 1;
if (!req || !rpl) {
return CSCF_RETURN_FALSE;
}
if (parse_sdp(req) < 0) {
LM_ERR("Unable to parse req SDP\n");
return CSCF_RETURN_FALSE;
}
if (parse_sdp(rpl) < 0) {
LM_ERR("Unable to parse res SDP\n");
return CSCF_RETURN_FALSE;
}
sdp_session_num = 0;
//Loop through req sessions and streams and get corresponding rpl sessions and streams and populate avps
for (;;) {
//we only cater for one session at the moment: TDOD: extend
if (sdp_session_num > 0) {
break;
}
req_sdp_session = get_sdp_session(req, sdp_session_num);
rpl_sdp_session = get_sdp_session(rpl, sdp_session_num);
if (!req_sdp_session || !rpl_sdp_session) {
if (!req_sdp_session)
LM_ERR("Missing SDP session information from req\n");
if (!rpl_sdp_session)
LM_ERR("Missing SDP session information from rpl\n");
break;
}
sdp_stream_num = 0;
for (;;) {
req_sdp_stream = get_sdp_stream(req, sdp_session_num,
sdp_stream_num);
rpl_sdp_stream = get_sdp_stream(rpl, sdp_session_num,
sdp_stream_num);
if (!req_sdp_stream || !rpl_sdp_stream) {
//LM_ERR("Missing SDP stream information\n");
break;
}
//is this a stream to add to AAR.
if (req_sdp_stream->is_rtp) {
//check if the src or dst port is 0 and if so then don't add to rx
int intportA = atoi(req_sdp_stream->port.s);
int intportB = atoi(rpl_sdp_stream->port.s);
if(intportA != 0 && intportB != 0){
if(!authorize_video_flow) {
if (strncmp(req_sdp_stream->media.s, "video", 5) == 0) {
add_flow = 0;
}
}
if(add_flow) {
//add this to auth session data
add_flow_description((rx_authsessiondata_t*) auth->u.auth.generic_data, sdp_stream_num + 1,
&req_sdp_stream->media, &req_sdp_session->ip_addr,
&req_sdp_stream->port, &rpl_sdp_session->ip_addr,
&rpl_sdp_stream->port, &rpl_sdp_stream->transport,
&req_sdp_stream->raw_stream,
&rpl_sdp_stream->raw_stream, direction, 0 /*This is a new mcd, we are not setting it as active*/);
rx_add_media_component_description_avp(aar, sdp_stream_num + 1,
&req_sdp_stream->media, &req_sdp_session->ip_addr,
&req_sdp_stream->port, &rpl_sdp_session->ip_addr,
&rpl_sdp_stream->port, &rpl_sdp_stream->transport,
&req_sdp_stream->raw_stream,
&rpl_sdp_stream->raw_stream, direction);
}
add_flow = 1;
}
}
sdp_stream_num++;
}
sdp_session_num++;
}
free_sdp((sdp_info_t**) (void*) &req->body);
free_sdp((sdp_info_t**) (void*) &rpl->body);
return 0;
}
/**
* Send a CCR to the OCS based on the SIP message (INVITE ONLY)
* @param msg - SIP message
* @param direction - orig|term
* @param reservation_units - units to try to reserve
* @param reservation_units - config route to call when receiving a CCA
* @param tindex - transaction index
* @param tindex - transaction label
*
* @returns #CSCF_RETURN_BREAK if OK, #CSCF_RETURN_ERROR on error
*/
int Ro_Send_CCR(struct sip_msg *msg, struct dlg_cell *dlg, int dir, int reservation_units, str* incoming_trunk_id, str* outgoing_trunk_id,
str* pani, cfg_action_t* action, unsigned int tindex, unsigned int tlabel) {
str session_id = {0, 0},
called_asserted_identity = {0, 0},
subscription_id = {0, 0},
asserted_identity = {0, 0};
int subscription_id_type = AVP_EPC_Subscription_Id_Type_End_User_SIP_URI;
AAASession* cc_acc_session = NULL;
Ro_CCR_t * ro_ccr_data = 0;
AAAMessage * ccr = 0;
struct ro_session *new_session = 0;
struct session_setup_data *ssd;
int ret = 0;
struct hdr_field *h = 0;
char *p;
int cc_event_number = 0; //According to IOT tests this should start at 0
int cc_event_type = RO_CC_START;
int free_called_asserted_identity = 0;
sdp_session_cell_t* msg_sdp_session;
sdp_stream_cell_t* msg_sdp_stream;
int active_service_identifier;
int active_rating_group;
int sdp_stream_num = 0;
LM_DBG("Sending initial CCR request (%c) for reservation_units [%d] incoming_trunk_id [%.*s] outgoing_trunk_id [%.*s]\n",
dir==RO_ORIG_DIRECTION?'O':'T',
reservation_units,
incoming_trunk_id->len, incoming_trunk_id->s,
outgoing_trunk_id->len, outgoing_trunk_id->s);
ssd = shm_malloc(sizeof (struct session_setup_data)); // lookup structure used to load session info from cdp callback on CCA
if (!ssd) {
LM_ERR("no more shm mem\n");
goto error;
}
//getting asserted identity
if ((asserted_identity = cscf_get_asserted_identity(msg, 0)).len == 0) {
LM_DBG("No P-Asserted-Identity hdr found. Using From hdr for asserted_identity");
asserted_identity = dlg->from_uri;
if (asserted_identity.len > 0 && asserted_identity.s) {
p=(char*)memchr(asserted_identity.s, ';',asserted_identity.len);
if (p)
asserted_identity.len = (p-asserted_identity.s);
}
}
//getting called asserted identity
if ((called_asserted_identity = cscf_get_public_identity_from_called_party_id(msg, &h)).len == 0) {
LM_DBG("No P-Called-Identity hdr found. Using request URI for called_asserted_identity");
called_asserted_identity = cscf_get_public_identity_from_requri(msg);
free_called_asserted_identity = 1;
}
if (dir == RO_ORIG_DIRECTION) {
subscription_id.s = asserted_identity.s;
subscription_id.len = asserted_identity.len;
} else if (dir == RO_TERM_DIRECTION) {
subscription_id.s = called_asserted_identity.s;
subscription_id.len = called_asserted_identity.len;
} else {
LM_CRIT("don't know what to do in unknown mode - should we even get here\n");
goto error;
}
//getting subscription id type
if (strncasecmp(subscription_id.s, "tel:", 4) == 0) {
subscription_id_type = Subscription_Type_MSISDN;
} else {
subscription_id_type = Subscription_Type_IMPU; //default is END_USER_SIP_URI
}
str mac = {0, 0};
if (get_mac_avp_value(msg, &mac) != 0)
LM_DBG(RO_MAC_AVP_NAME" was not set. Using default.");
//by default we use voice service id and rate group
//then we check SDP - if we find video then we use video service id and rate group
LM_DBG("Setting default SID to %d and RG to %d for voice",
voice_service_identifier, voice_rating_group);
active_service_identifier = voice_service_identifier;
active_rating_group = voice_rating_group;
//check SDP - if there is video then set default to video, if not set it to audio
if (parse_sdp(msg) < 0) {
LM_ERR("Unable to parse req SDP\n");
goto error;
}
msg_sdp_session = get_sdp_session(msg, 0);
if (!msg_sdp_session) {
LM_ERR("Missing SDP session information from rpl\n");
} else {
for (;;) {
msg_sdp_stream = get_sdp_stream(msg, 0, sdp_stream_num);
if (!msg_sdp_stream) {
//LM_ERR("Missing SDP stream information\n");
break;
}
int intportA = atoi(msg_sdp_stream->port.s);
if (intportA != 0 && strncasecmp(msg_sdp_stream->media.s, "video", 5) == 0) {
LM_DBG("This SDP has a video component and src ports not equal to 0 - so we set default SID to %d and RG to %d for video",
video_service_identifier, video_rating_group);
active_service_identifier = video_service_identifier;
active_rating_group = video_rating_group;
break;
}
sdp_stream_num++;
}
}
free_sdp((sdp_info_t**) (void*) &msg->body);
//create a session object without auth and diameter session id - we will add this later.
new_session = build_new_ro_session(dir, 0, 0, &session_id, &dlg->callid,
&asserted_identity, &called_asserted_identity, &mac, dlg->h_entry, dlg->h_id,
reservation_units, 0, active_rating_group, active_service_identifier, incoming_trunk_id, outgoing_trunk_id, pani);
if (!new_session) {
LM_ERR("Couldn't create new Ro Session - this is BAD!\n");
goto error;
}
ssd->action = action;
ssd->tindex = tindex;
ssd->tlabel = tlabel;
ssd->ro_session = new_session;
if (!sip_create_ro_ccr_data(msg, dir, &ro_ccr_data, &cc_acc_session, asserted_identity, called_asserted_identity, subscription_id, subscription_id_type, incoming_trunk_id, outgoing_trunk_id, pani))
goto error;
if (!ro_ccr_data)
goto error;
if (!cc_acc_session)
goto error;
if (!(ccr = Ro_new_ccr(cc_acc_session, ro_ccr_data)))
goto error;
if (!Ro_add_vendor_specific_appid(ccr, IMS_vendor_id_3GPP, IMS_Ro, 0)) {
LM_ERR("Problem adding Vendor specific ID\n");
goto error;
}
if (!Ro_add_cc_request(ccr, cc_event_type, cc_event_number)) {
LM_ERR("Problem adding CC-Request data\n");
goto error;
}
if (!Ro_add_event_timestamp(ccr, time(NULL))) {
LM_ERR("Problem adding Event-Timestamp data\n");
goto error;
}
if (!Ro_add_user_equipment_info(ccr, AVP_EPC_User_Equipment_Info_Type_MAC, mac)) {
LM_ERR("Problem adding User-Equipment data\n");
goto error;
}
if (!Ro_add_subscription_id(ccr, subscription_id_type, &subscription_id)) {
LM_ERR("Problem adding Subscription ID data\n");
goto error;
}
if (!Ro_add_multiple_service_credit_Control(ccr, reservation_units, -1, active_rating_group, active_service_identifier)) {
LM_ERR("Problem adding Multiple Service Credit Control data\n");
goto error;
}
/* before we send, update our session object with CC App session ID and data */
new_session->auth_appid = cc_acc_session->application_id;
new_session->auth_session_type = cc_acc_session->type;
new_session->ro_session_id.s = (char*) shm_malloc(cc_acc_session->id.len);
if (!new_session->ro_session_id.s) {
LM_ERR("no more shm mem\n");
goto error;
}
new_session->ro_session_id.len = cc_acc_session->id.len;
memcpy(new_session->ro_session_id.s, cc_acc_session->id.s, cc_acc_session->id.len);
LM_DBG("new CC Ro Session ID: [%.*s] stored in shared memory address [%p]\n", cc_acc_session->id.len, cc_acc_session->id.s, new_session);
LM_DBG("Sending CCR Diameter message.\n");
// new_session->ccr_sent = 1; //assume we will send successfully
cdpb.AAASessionsUnlock(cc_acc_session->hash);
if (ro_forced_peer.len > 0) {
LM_DBG("Sending message with Peer\n");
ret = cdpb.AAASendMessageToPeer(ccr, &ro_forced_peer, resume_on_initial_ccr, (void *) ssd);
} else {
LM_DBG("Sending message without Peer and realm is [%.*s]\n", ccr->dest_realm->data.len, ccr->dest_realm->data.s);
ret = cdpb.AAASendMessage(ccr, resume_on_initial_ccr, (void *) ssd);
}
if (ret != 1) {
LM_ERR("Failed to send Diameter CCR\n");
// new_session->ccr_sent = 0;
goto error;
}
Ro_free_CCR(ro_ccr_data);
LM_DBG("Registering for callbacks on Dialog [%p] and charging session [%p]\n", dlg, new_session);
//TODO: if the following fail, we should clean up the Ro session.......
if (dlgb.register_dlgcb(dlg, DLGCB_TERMINATED | DLGCB_FAILED | DLGCB_EXPIRED | DLGCB_CONFIRMED, dlg_callback_received, (void*) new_session, NULL) != 0) {
LM_CRIT("cannot register callback for dialog confirmation\n");
goto error;
}
counter_inc(ims_charging_cnts_h.initial_ccrs);
counter_inc(ims_charging_cnts_h.active_ro_sessions);
if (free_called_asserted_identity) shm_free(called_asserted_identity.s); // shm_malloc in cscf_get_public_identity_from_requri
return RO_RETURN_BREAK;
error:
LM_DBG("Trying to reserve credit on initial INVITE failed.\n");
if (free_called_asserted_identity) shm_free(called_asserted_identity.s); // shm_malloc in cscf_get_public_identity_from_requri
Ro_free_CCR(ro_ccr_data);
if (cc_acc_session) {
cdpb.AAASessionsUnlock(cc_acc_session->hash);
cdpb.AAADropSession(cc_acc_session);
}
if (ssd)
shm_free(ssd);
return RO_RETURN_ERROR;
}
int sca_logic_notify(b2bl_cb_params_t *params, unsigned int b2b_event)
{
int on_hold = 0;
int sdp_session_num = 0, sdp_stream_num;
sdp_session_cell_t* sdp_session;
sdp_stream_cell_t* sdp_stream;
struct sip_msg *msg = params->msg;
b2bl_cb_ctx_t *cb_params = params->param;
str *shared_line;
unsigned int hash_index, appearance;
b2b_sca_record_t *record;
b2b_sca_call_t *call = NULL;
str publish_hdr;
unsigned int call_info_appearance;
unsigned int call_info_appearance_state = 0;
struct hdr_field *call_info;
struct call_info_body *callinfo_b;
struct to_body *call_info_b;
struct to_param *param;
if (b2b_sca_shutdown_completed) return B2B_FOLLOW_SCENARIO_CB_RET;
if (params == NULL) {
LM_ERR("callback event [%d] without cb params\n", b2b_event);
return B2B_DROP_MSG_CB_RET;
}
shared_line = &cb_params->shared_line;
hash_index = cb_params->hash_index;
appearance = cb_params->appearance;
LM_DBG("*** GOT NOTIFICATION TYPE [%d] WITH cb_params [%p]->[%.*s] appearance [%d] on hash index [%d]"
" for b2bl entity [%d]\n",
b2b_event, cb_params, shared_line->len, shared_line->s,
appearance, hash_index, params->entity);
if (msg && msg->call_info) {
if (0 == parse_call_info_header(msg)) {
call_info = msg->call_info;
if (call_info) {
LM_DBG("BODY=[%p]->[%.*s] sibling=[%p]\n", call_info,
call_info->body.len, call_info->body.s, call_info->sibling);
callinfo_b = call_info->parsed;
while (callinfo_b) {
call_info_b = &(callinfo_b->call_info_body);
LM_DBG(". body=[%.*s] param_lst=[%p] last_param=[%p]\n",
call_info_b->body.len, call_info_b->body.s,
call_info_b->param_lst, call_info_b->last_param);
param = call_info_b->param_lst;
while (param) {
LM_DBG(".. [%p]->[%d] [%.*s]=[%.*s]->[%p]\n",
param, param->type, param->name.len, param->name.s,
param->value.len, param->value.s, param->next);
if (param->name.len==APPEARANCE_INDEX_LEN &&
strncmp(APPEARANCE_INDEX_STR,
param->name.s, APPEARANCE_INDEX_LEN)==0) {
if (strno2int(¶m->value,&call_info_appearance)<0) {
LM_ERR("bad appearance-index [%.*s]\n",
param->value.len, param->value.s);
return -1;
}
if (appearance != call_info_appearance) {
LM_ERR("got appearance[%d] while expecting[%d]\n",
call_info_appearance, appearance);
goto next_callinfo_b;
} else {
LM_DBG("*** GOT APP-INDEX [%d]\n",
call_info_appearance);
}
} else if (param->name.len==APPEARANCE_STATE_LEN &&
strncmp(APPEARANCE_STATE_STR,
param->name.s, APPEARANCE_STATE_LEN)==0) {
LM_DBG("*** GOT APP-STATE [%.*s]\n",
param->value.len, param->value.s);
if (param->value.len == strlen(APP_STATE_HELD_PRIVATE) &&
strncmp(param->value.s,
app_state[HELD_PRIVATE_STATE].s,
param->value.len)==0) {
call_info_appearance_state = HELD_PRIVATE_STATE;
}
}
param=param->next;
}
goto handle_appearance;
next_callinfo_b:
callinfo_b = callinfo_b->next;
}
call_info = call_info->sibling;
}
} else {
LM_ERR("Unable to parse Call-Info header\n");
return B2B_DROP_MSG_CB_RET;
}
}
handle_appearance:
lock_get(&b2b_sca_htable[hash_index].lock);
record = b2b_sca_search_record_safe(hash_index, shared_line);
if (record == NULL) {
lock_release(&b2b_sca_htable[hash_index].lock);
LM_ERR("record not found for shared line [%.*s] on hash index [%d]\n",
shared_line->len, shared_line->s, hash_index);
return B2B_DROP_MSG_CB_RET;
}
b2b_sca_print_record(record);
switch(b2b_event){
case B2B_DESTROY_CB:
/* Destroy the sca index record */
shm_free(params->param);
b2b_sca_delete_call_record(hash_index, record, appearance);
break;
case B2B_RE_INVITE_CB:
case B2B_CONFIRMED_CB:
call = b2b_sca_search_call_safe(record, appearance);
if (call == NULL) {
LM_ERR("call record not found for shared line [%.*s] with index [%d]\n",
shared_line->len, shared_line->s, appearance);
lock_release(&b2b_sca_htable[hash_index].lock);
return B2B_DROP_MSG_CB_RET;
}
if (0 == parse_sdp(msg)) {
sdp_session = get_sdp_session(msg, sdp_session_num);
if(!sdp_session) break;
sdp_stream_num = 0;
for(;;) {
sdp_stream = get_sdp_stream(msg, sdp_session_num, sdp_stream_num);
if(!sdp_stream) break;
if(sdp_stream->media.len==AUDIO_STR_LEN &&
strncmp(sdp_stream->media.s,AUDIO_STR,AUDIO_STR_LEN)==0 &&
sdp_stream->is_on_hold) {
on_hold = 1;
break;
}
sdp_stream_num++;
}
sdp_session_num++;
}
if (on_hold) {
if (call_info_appearance_state)
call->call_state = HELD_PRIVATE_STATE;
else
call->call_state = HELD_STATE;
} else {
call->call_state = ACTIVE_STATE;
}
break;
default:
LM_ERR("Unexpected event\n");
}
/* Prepare PUBLISH Call-Info header. */
if (build_publish_call_info_header(record, &publish_hdr) != 0) {
lock_release(&b2b_sca_htable[hash_index].lock);
LM_ERR("Unable to build PUBLISH Call-Info header\n");
return B2B_FOLLOW_SCENARIO_CB_RET;
}
/* Save the record to db. */
if (push_sca_info_to_db(record, appearance, 1) != 0)
LM_ERR("DB out of synch\n");
/* Notify the watchers. */
sca_publish(record, &publish_hdr);
b2b_sca_delete_record_if_empty(record, hash_index);
lock_release(&b2b_sca_htable[hash_index].lock);
if (publish_hdr.s != publish_call_info_hdr_buf)
pkg_free(publish_hdr.s);
return B2B_FOLLOW_SCENARIO_CB_RET;
}
/**
* @brief remove streams matching the m='media'
* @return -1 - error; 0 - not found; >=1 - found
*/
static int sdp_remove_media(sip_msg_t *msg, str *media)
{
sdp_info_t *sdp = NULL;
int sdp_session_num;
int sdp_stream_num;
sdp_session_cell_t* sdp_session;
sdp_stream_cell_t* sdp_stream;
sdp_stream_cell_t* nxt_stream;
int ret = 0;
char *dstart = NULL;
int dlen = 0;
struct lump *anchor;
if(parse_sdp(msg) < 0) {
LM_ERR("Unable to parse sdp\n");
return -1;
}
LM_DBG("attempting to search for media type: [%.*s]\n",
media->len, media->s);
sdp = (sdp_info_t*)msg->body;
sdp_session_num = 0;
for(;;)
{
sdp_session = get_sdp_session(msg, sdp_session_num);
if(!sdp_session) break;
sdp_stream_num = 0;
for(;;)
{
sdp_stream = get_sdp_stream(msg, sdp_session_num, sdp_stream_num);
if(!sdp_stream) break;
LM_DBG("stream %d of %d - media [%.*s]\n",
sdp_stream_num, sdp_session_num,
sdp_stream->media.len, sdp_stream->media.s);
if(media->len==sdp_stream->media.len
&& strncasecmp(sdp_stream->media.s, media->s,
media->len)==0)
{
/* found - remove */
LM_DBG("removing media stream: %.*s", media->len, media->s);
nxt_stream = get_sdp_stream(msg, sdp_session_num,
sdp_stream_num+1);
/* skip back 'm=' */
dstart = sdp_stream->media.s - 2;
if(!nxt_stream) {
/* delete to end of sdp */
dlen = (int)(sdp->text.s + sdp->text.len - dstart);
} else {
/* delete to start of next stream */
dlen = (int)(nxt_stream->media.s - 2 - dstart);
}
anchor = del_lump(msg, dstart - msg->buf, dlen, 0);
if (anchor == NULL) {
LM_ERR("failed to remove media type [%.*s]\n",
media->len, media->s);
return -1;
}
ret++;
}
sdp_stream_num++;
}
sdp_session_num++;
}
return ret;
}
int sdp_keep_codecs_by_id(sip_msg_t* msg, str* codecs, str *media)
{
sdp_info_t *sdp = NULL;
int sdp_session_num;
int sdp_stream_num;
sdp_session_cell_t* sdp_session;
sdp_stream_cell_t* sdp_stream;
str sdp_codecs;
str tmp_codecs;
str rm_codec;
if(parse_sdp(msg) < 0) {
LM_ERR("Unable to parse sdp\n");
return -1;
}
sdp = (sdp_info_t*)msg->body;
if(sdp==NULL) {
LM_DBG("No sdp body\n");
return -1;
}
LM_DBG("attempting to keep codecs in sdp: [%.*s]\n",
codecs->len, codecs->s);
sdp_session_num = 0;
for(;;)
{
sdp_session = get_sdp_session(msg, sdp_session_num);
if(!sdp_session) break;
sdp_stream_num = 0;
for(;;)
{
sdp_stream = get_sdp_stream(msg, sdp_session_num, sdp_stream_num);
if(!sdp_stream) break;
LM_DBG("stream %d of %d - payloads [%.*s]\n",
sdp_stream_num, sdp_session_num,
sdp_stream->payloads.len, sdp_stream->payloads.s);
if((media==NULL)
|| (media->len==sdp_stream->media.len
&& strncasecmp(sdp_stream->media.s, media->s,
media->len)==0))
{
sdp_codecs = sdp_stream->payloads;
tmp_codecs = sdp_stream->payloads;
while(str_find_token(&tmp_codecs, &rm_codec, ' ')==0
&& rm_codec.len>0)
{
tmp_codecs.len -=(int)(&rm_codec.s[rm_codec.len]-tmp_codecs.s);
tmp_codecs.s = rm_codec.s + rm_codec.len;
if(sdp_codec_in_str(codecs, &rm_codec, ',')==0) {
LM_DBG("codecs [%.*s] - remove [%.*s]\n",
sdp_codecs.len, sdp_codecs.s,
rm_codec.len, rm_codec.s);
sdp_remove_str_codec_id(msg, &sdp_codecs, &rm_codec);
sdp_remove_str_codec_id_attrs(msg, sdp_stream, &rm_codec);
}
}
}
sdp_stream_num++;
}
sdp_session_num++;
}
return 0;
}
int sdp_with_codecs_by_id(sip_msg_t* msg, str* codecs)
{
sdp_info_t *sdp = NULL;
int sdp_session_num;
int sdp_stream_num;
sdp_session_cell_t* sdp_session;
sdp_stream_cell_t* sdp_stream;
str sdp_codecs;
str tmp_codecs;
str fnd_codec;
int foundone = 0;
int notfound = 0;
if(parse_sdp(msg) < 0) {
LM_ERR("Unable to parse sdp\n");
return -1;
}
sdp = (sdp_info_t*)msg->body;
if(sdp==NULL) {
LM_DBG("No sdp body\n");
return -1;
}
LM_DBG("attempting to search codecs in sdp: [%.*s]\n",
codecs->len, codecs->s);
sdp_session_num = 0;
for(;;)
{
sdp_session = get_sdp_session(msg, sdp_session_num);
if(!sdp_session) break;
sdp_stream_num = 0;
for(;;)
{
sdp_stream = get_sdp_stream(msg, sdp_session_num, sdp_stream_num);
if(!sdp_stream) break;
LM_DBG("stream %d of %d - payloads [%.*s]\n",
sdp_stream_num, sdp_session_num,
sdp_stream->payloads.len, sdp_stream->payloads.s);
sdp_codecs = sdp_stream->payloads;
tmp_codecs = *codecs;
while(str_find_token(&tmp_codecs, &fnd_codec, ',')==0
&& fnd_codec.len>0)
{
tmp_codecs.len -=(int)(&fnd_codec.s[fnd_codec.len]-tmp_codecs.s);
tmp_codecs.s = fnd_codec.s + fnd_codec.len;
if(sdp_codec_in_str(&sdp_codecs, &fnd_codec, ' ')==0) {
LM_DBG("codecs [%.*s] - not found [%.*s]\n",
sdp_codecs.len, sdp_codecs.s,
fnd_codec.len, fnd_codec.s);
notfound = 1;
} else {
LM_DBG("codecs [%.*s] - found [%.*s]\n",
sdp_codecs.len, sdp_codecs.s,
fnd_codec.len, fnd_codec.s);
foundone = 1;
}
}
sdp_stream_num++;
}
sdp_session_num++;
}
return (foundone + ((foundone)?notfound:0));
}
/**
* @brief assigns common media transport (if any) of 'm' lines to pv argument
* @return -1 - error; 0 - not found; 1 - found
*/
static int w_sdp_transport(sip_msg_t* msg, char *avp)
{
int_str avp_val;
int_str avp_name;
static unsigned short avp_type = 0;
str s;
pv_spec_t *avp_spec = NULL;
int sdp_session_num;
int sdp_stream_num;
sdp_session_cell_t* sdp_session;
sdp_stream_cell_t* sdp_stream;
str *transport;
s.s = avp; s.len = strlen(s.s);
if (pv_locate_name(&s) != s.len) {
LM_ERR("invalid avp parameter %s\n", avp);
return -1;
}
if (((avp_spec = pv_cache_get(&s)) == NULL)
|| avp_spec->type!=PVT_AVP) {
LM_ERR("malformed or non AVP %s\n", avp);
return -1;
}
if (pv_get_avp_name(0, &avp_spec->pvp, &avp_name, &avp_type) != 0) {
LM_ERR("invalid AVP definition %s\n", avp);
return -1;
}
if(parse_sdp(msg) < 0) {
LM_ERR("unable to parse sdp\n");
return -1;
}
sdp_session_num = 0;
transport = (str *)NULL;
for (;;) {
sdp_session = get_sdp_session(msg, sdp_session_num);
if (!sdp_session) break;
sdp_stream_num = 0;
for (;;) {
sdp_stream = get_sdp_stream(msg, sdp_session_num,
sdp_stream_num);
if (!sdp_stream) break;
LM_DBG("stream %d of %d - transport [%.*s]\n",
sdp_stream_num, sdp_session_num,
sdp_stream->transport.len, sdp_stream->transport.s);
if (transport) {
if (transport->len != sdp_stream->transport.len
|| strncasecmp(sdp_stream->transport.s, transport->s,
transport->len) != 0) {
LM_DBG("no common transport\n");
return -2;
}
} else {
transport = &sdp_stream->transport;
}
sdp_stream_num++;
}
sdp_session_num++;
}
if (transport) {
avp_val.s.s = transport->s;
avp_val.s.len = transport->len;
LM_DBG("found common transport '%.*s'\n",
transport->len, transport->s);
if (add_avp(AVP_VAL_STR | avp_type, avp_name, avp_val) != 0) {
LM_ERR("failed to add transport avp");
return -1;
}
}
return 1;
}
/** Helper function for adding media component AVPs for each SDP stream*/
int add_media_components(AAAMessage* aar, struct sip_msg *req,
struct sip_msg *rpl, enum dialog_direction direction, str *ip,
uint16_t *ip_version) {
int sdp_session_num;
int sdp_stream_num;
sdp_session_cell_t* req_sdp_session, *rpl_sdp_session;
sdp_stream_cell_t* req_sdp_stream, *rpl_sdp_stream;
if (!req || !rpl) {
return RX_RETURN_FALSE;
}
if (parse_sdp(req) < 0) {
LM_ERR("Unable to parse req SDP\n");
return RX_RETURN_FALSE;
}
if (parse_sdp(rpl) < 0) {
LM_ERR("Unable to parse res SDP\n");
return RX_RETURN_FALSE;
}
sdp_session_num = 0;
//Loop through req sessions and streams and get corresponding rpl sessions and streams and populate avps
for (;;) {
//we only cater for one session at the moment: TDOD: extend
if (sdp_session_num > 0) {
break;
}
req_sdp_session = get_sdp_session(req, sdp_session_num);
rpl_sdp_session = get_sdp_session(rpl, sdp_session_num);
if (!req_sdp_session || !rpl_sdp_session) {
if (!req_sdp_session)
LM_ERR("Missing SDP session information from req\n");
if (!rpl_sdp_session)
LM_ERR("Missing SDP session information from rpl\n");
break;
}
if (direction == DLG_MOBILE_ORIGINATING) {
*ip_version = req_sdp_session->pf;
*ip = req_sdp_session->ip_addr;
} else if (direction == DLG_MOBILE_TERMINATING) {
*ip_version = rpl_sdp_session->pf;
*ip = rpl_sdp_session->ip_addr;
}
sdp_stream_num = 0;
for (;;) {
req_sdp_stream = get_sdp_stream(req, sdp_session_num,
sdp_stream_num);
rpl_sdp_stream = get_sdp_stream(rpl, sdp_session_num,
sdp_stream_num);
if (!req_sdp_stream || !rpl_sdp_stream) {
//LM_ERR("Missing SDP stream information\n");
break;
}
//is this a stream to add to AAR.
if (req_sdp_stream->is_rtp) {
rx_add_media_component_description_avp(aar, sdp_stream_num + 1,
&req_sdp_stream->media, &req_sdp_session->ip_addr,
&req_sdp_stream->port, &rpl_sdp_session->ip_addr,
&rpl_sdp_stream->port, &rpl_sdp_stream->transport,
&req_sdp_stream->raw_stream,
&rpl_sdp_stream->raw_stream, direction);
}
sdp_stream_num++;
}
sdp_session_num++;
}
free_sdp((sdp_info_t**) (void*) &req->body);
free_sdp((sdp_info_t**) (void*) &rpl->body);
return 0;
}
