/**@ingroup tnet_stun_group
* Creates @ref tnet_stun_attribute_t from raw buffer.
* @param data Raw buffer from which to create the STUN attribute.*
* @param size The size of the eaw buffer.
* @retval @ref tnet_stun_attribute_t object if succeed and NULL other wise.
*/
tnet_stun_attribute_t* tnet_stun_attribute_deserialize(const void* data, tsk_size_t size)
{
tnet_stun_attribute_t *attribute = 0;
const uint8_t* dataPtr = data;
tnet_stun_attribute_type_t type = (tnet_stun_attribute_type_t)tnet_ntohs_2(dataPtr);
uint16_t length = tnet_ntohs_2(&dataPtr[2]);
/* Check validity */
if(!data || size<=4/* Type(2-bytes) plus Length (2-bytes) */)
{
return 0;
}
dataPtr += (2 /* Type */+ 2/* Length */);
/* Attribute Value
*/
switch(type)
{
/* RFC 5389 - 15.1. MAPPED-ADDRESS */
case stun_mapped_address:
{
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_mapped_address_create(dataPtr, length);
break;
}
/* RFC 5389 - 15.2. XOR-MAPPED-ADDRESS*/
case stun_xor_mapped_address:
{
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_xmapped_address_create(dataPtr, length);
break;
}
/* RFC 5389 - 15.3. USERNAME*/
case stun_username:
{
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_username_create(dataPtr, length);
break;
}
/* RFC 5389 - MESSAGE-INTEGRITY*/
case stun_message_integrity:
{
if(length == TSK_SHA1_DIGEST_SIZE){
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_integrity_create(dataPtr, length);
}
break;
}
/* RFC 5389 - 15.5. FINGERPRINT*/
case stun_fingerprint:
{
uint32_t fingerprint = tnet_htonl_2(dataPtr);
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_fingerprint_create(fingerprint);
break;
}
/* RFC 5389 - 15.6. ERROR-CODE*/
case stun_error_code:
{
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_errorcode_create(dataPtr, length);
break;
}
/* RFC 5389 - 15.7. REALM*/
case stun_realm:
{
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_realm_create(dataPtr, length);
break;
}
/* RFC 5389 - 15.8. NONCE*/
case stun_nonce:
{
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_nonce_create(dataPtr, length);
break;
}
/* RFC 5389 - 15.9. UNKNOWN-ATTRIBUTES*/
case stun_unknown_attributes:
{
TSK_DEBUG_ERROR("DESERIALIZE:UNKNOWN-ATTRIBUTES ==> NOT IMPLEMENTED");
attribute = tnet_stun_attribute_create();
break;
}
/* RFC 5389 - 15.10. SOFTWARE */
case stun_software:
{
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_software_create(dataPtr, length);
break;
}
/* RFC 5389 - 15.11. ALTERNATE-SERVER */
case stun_alternate_server:
{
attribute = (tnet_stun_attribute_t *)tnet_stun_attribute_altserver_create(dataPtr, length);
break;
}
/* draft-ietf-behave-turn-16 subclause 14 */
case stun_channel_number:
case stun_lifetime:
case stun_reserved2:
case stun_xor_peer_address:
case stun_data:
case stun_xor_relayed_address:
case stun_even_port:
case stun_requested_transport:
case stun_dont_fragment:
case stun_reserved3:
case stun_reservation_token:
{
attribute = tnet_turn_attribute_deserialize(type, length, dataPtr, length);
break;
}
default:
//TSK_DEBUG_WARN("==> NOT IMPLEMENTED");
break;
}
if(!attribute){
/* Create default */
attribute = tnet_stun_attribute_create();
}
/* Set common values (Do I need this ==> already set by the constructor). */
attribute->type = type;
attribute->length = length;
return attribute;
}
/**@ingroup tnet_turn_group
*/
tnet_stun_attribute_t* tnet_turn_attribute_deserialize(tnet_stun_attribute_type_t type, uint16_t length, const void* payload, tsk_size_t payload_size)
{
tnet_stun_attribute_t *attribute = tsk_null;
const uint8_t* dataPtr = payload;
/* Attribute Value
*/
switch(type)
{
/* draft-ietf-behave-turn-16 - 14.1. CHANNEL-NUMBER */
case stun_channel_number:
{
uint32_t number = tnet_htonl_2(dataPtr);
attribute = (tnet_stun_attribute_t *)tnet_turn_attribute_channelnum_create(number);
break;
}
/* draft-ietf-behave-turn-16 - 14.2. LIFETIME */
case stun_lifetime:
{
uint32_t lifetime = tnet_htonl_2(dataPtr);
attribute = (tnet_stun_attribute_t *)tnet_turn_attribute_lifetime_create(lifetime);
break;
}
/* draft-ietf-behave-turn-16 - 14.3. XOR-PEER-ADDRESS */
case stun_xor_peer_address:
{
TSK_DEBUG_ERROR("==> NOT IMPLEMENTED");
break;
}
/* draft-ietf-behave-turn-16 - 14.4. DATA */
case stun_data:
{
TSK_DEBUG_ERROR("==> NOT IMPLEMENTED");
break;
}
/* draft-ietf-behave-turn-16 - 14.5. XOR-RELAYED-ADDRESS */
case stun_xor_relayed_address:
{
attribute = (tnet_stun_attribute_t *)tnet_turn_attribute_xrelayed_addr_create(dataPtr, length);
break;
}
/* draft-ietf-behave-turn-16 - 14.6. EVEN-PORT */
case stun_even_port:
{
TSK_DEBUG_ERROR("==> NOT IMPLEMENTED");
break;
}
/* draft-ietf-behave-turn-16 - 14.7. REQUESTED-TRANSPORT */
case stun_requested_transport:
{
TSK_DEBUG_ERROR("==> NOT IMPLEMENTED");
break;
}
/* draft-ietf-behave-turn-16 - 14.8. DONT-FRAGMENT */
case stun_dont_fragment:
{
TSK_DEBUG_ERROR("==> NOT IMPLEMENTED");
break;
}
/* draft-ietf-behave-turn-16 - 14.9. RESERVATION-TOKEN */
case stun_reservation_token:
{
TSK_DEBUG_ERROR("==> NOT IMPLEMENTED");
break;
}
default:
{
TSK_DEBUG_ERROR("==> NOT IMPLEMENTED");
break;
}
}
if(!attribute){
/* Create default */
attribute = tnet_stun_attribute_create();
}
return attribute;
}
