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primitive version of SDP_ServiceSearchAttributeRequest

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matthias.ringwald 2010-06-11 22:05:38 +00:00
parent be85189294
commit f38f1c873c
1 changed files with 31 additions and 9 deletions
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40
src/sdp.c
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@ -172,21 +172,43 @@ static uint8_t sdp_response_buffer[250];
int sdp_handle_service_search_attribute_request(uint8_t * packet){
uint16_t transaction_id = READ_NET_16(packet, 1);
uint16_t param_len = READ_NET_16(packet, 3);
uint16_t pos = 5;
// get request details
uint16_t transaction_id = READ_NET_16(packet, 1);
uint16_t param_len = READ_NET_16(packet, 3);
uint8_t * serviceSearchPattern = &packet[5];
uint16_t serviceSearchPatternLen = de_get_len(serviceSearchPattern);
uint16_t maximumAttributeByteCount = READ_NET_16(packet, 5 + serviceSearchPatternLen);
uint8_t * attributeIDList = &packet[5+serviceSearchPatternLen+2];
uint16_t attributeIDListLen = de_get_len(attributeIDList);
uint8_t * continuationState = &packet[5+serviceSearchPatternLen+2+attributeIDListLen];
// header
sdp_response_buffer[0] = SDP_ServiceSearchAttributeResponse;
net_store_16(sdp_response_buffer, 1, transaction_id);
// AttributeListsByteCount
net_store_16(sdp_response_buffer, pos, 2); // 2 bytes in DES with 1 byte len
pos += 2;
// AttributeLists
sdp_response_buffer[pos++] = 0x35;
sdp_response_buffer[pos++] = 0;
// AttributeLists - starts at offset 7
uint16_t pos = 7;
uint8_t *attributeLists = &sdp_response_buffer[pos];
de_create_sequence(attributeLists);
// for all service records that match
linked_item_t *it;
for (it = (linked_item_t *) sdp_service_records; it ; it = it->next){
service_record_item_t * item = (service_record_item_t *) it;
if (sdp_record_matches_service_search_pattern(item->service_record, serviceSearchPattern)){
// copy specified attributes
uint8_t * attributes = de_push_sequence(attributeLists);
sdp_append_attributes_in_attributeIDList(item->service_record, attributeIDList, attributes, maximumAttributeByteCount);
de_pop_sequence(attributeLists, attributes);
}
}
pos += de_get_len(attributeLists);
// AttributeListsByteCount - at offset 5
net_store_16(sdp_response_buffer, 5, de_get_len(attributeLists));
// Continuation State: none
// @TODO send correct continuation state
sdp_response_buffer[pos++] = 0;
// update len info