Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 #define  INCLUDE_FROM_SERVICEDISCOVERYPROTOCOL_C
  32 #include "ServiceDiscoveryProtocol.h"
  33
  34 void ServiceDiscovery_ProcessPacket(void* Data, Bluetooth_Channel_t* Channel)
  35 {
  36         SDP_PDUHeader_t* SDPHeader = (SDP_PDUHeader_t*)Data;
  37         SDPHeader->ParameterLength = SwapEndian_16(SDPHeader->ParameterLength);
  38
  39         BT_SDP_DEBUG(1, "SDP Packet Received", NULL);
  40         BT_SDP_DEBUG(2, "-- PDU ID: 0x%02X", SDPHeader->PDU);
  41         BT_SDP_DEBUG(2, "-- Param Length: 0x%04X", SDPHeader->ParameterLength);
  42
  43         switch (SDPHeader->PDU)
  44         {
  45                 case SDP_PDU_SERVICESEARCHREQUEST:
  46                         ServiceDiscovery_ProcessServiceSearch(SDPHeader);
  47                         break;
  48                 case SDP_PDU_SERVICEATTRIBUTEREQUEST:
  49                         ServiceDiscovery_ProcessServiceAttribute(SDPHeader);
  50                         break;
  51                 case SDP_PDU_SERVICESEARCHATTRIBUTEREQUEST:
  52                         ServiceDiscovery_ProcessServiceSearchAttribute(SDPHeader);
  53                         break;
  54         }
  55 }
  56
  57 static void ServiceDiscovery_ProcessServiceSearch(SDP_PDUHeader_t* SDPHeader)
  58 {
  59         BT_SDP_DEBUG(1, "<< Service Search", NULL);
  60 }
  61
  62 static void ServiceDiscovery_ProcessServiceAttribute(SDP_PDUHeader_t* SDPHeader)
  63 {
  64         BT_SDP_DEBUG(1, "<< Service Attribute", NULL);
  65 }
  66
  67 static void ServiceDiscovery_ProcessServiceSearchAttribute(SDP_PDUHeader_t* SDPHeader)
  68 {
  69         uint8_t* CurrentParameter = ((uint8_t*)SDPHeader + sizeof(SDP_PDUHeader_t));
  70
  71         BT_SDP_DEBUG(1, "<< Service Search Attribute", NULL);
  72
  73         uint8_t ServicePatternLength = ServiceDiscovery_GetDataElementSize(CurrentParameter);
  74         while (ServicePatternLength)
  75         {
  76                 uint8_t UUIDLength = ServiceDiscovery_GetDataElementSize(CurrentParameter);
  77                 uint8_t UUID[16];
  78
  79                 memset(UUID, 0x00, sizeof(UUID));
  80                 memcpy(&UUID[sizeof(UUID) - UUIDLength], CurrentParameter, UUIDLength);
  81
  82                 BT_SDP_DEBUG(2, "-- UUID: 0x%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
  83                                 UUID[0], UUID[1], UUID[2], UUID[3], UUID[4], UUID[5], UUID[6], UUID[7],
  84                                                 UUID[8], UUID[9], UUID[10], UUID[11], UUID[12], UUID[13], UUID[14], UUID[15]);
  85
  86                 ServicePatternLength -= UUIDLength;
  87         }
  88
  89         uint16_t MaxAttributeSize = ServiceDiscovery_Read16BitParameter(CurrentParameter);
  90
  91         uint8_t AttributeIDListLength = ServiceDiscovery_GetDataElementSize(CurrentParameter);
  92         while (AttributeIDListLength)
  93         {
  94                 uint8_t AttributeLength = ServiceDiscovery_GetDataElementSize(CurrentParameter);
  95
  96                 BT_SDP_DEBUG(2, "-- Attribute Length: 0x%04X", AttributeLength);
  97
  98                 AttributeIDListLength -= AttributeLength;
  99         }
 100 }
 101
 102 static uint32_t ServiceDiscovery_GetDataElementSize(void* DataElementHeader)
 103 {
 104         uint8_t SizeIndex = (*((uint8_t*)DataElementHeader++) & 0x07);
 105
 106         switch (SizeIndex)
 107         {
 108                 case 0:
 109                         return 1;
 110                 case 1:
 111                         return 2;
 112                 case 2:
 113                         return 4;
 114                 case 3:
 115                         return 8;
 116                 case 4:
 117                         return 16;
 118                 case 5:
 119                         return *((uint8_t*)DataElementHeader++);
 120                 case 6:
 121                         return *((uint16_t*)DataElementHeader++);
 122                 default:
 123                         return *((uint32_t*)DataElementHeader++);
 124         }
 125 }