X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/e55f33866334615e705ff68c0f3bea8e5b1b9b8b..141d94fa980b6056c1922cbfeb9f5535227331c5:/Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c diff --git a/Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c b/Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c index 1ee4c842e..4eb262103 100644 --- a/Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c +++ b/Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c @@ -1,41 +1,261 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2010. - - dean [at] fourwalledcubicle [dot] com - www.fourwalledcubicle.com -*/ - -/* - Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) - - Permission to use, copy, modify, distribute, and sell this - software and its documentation for any purpose is hereby granted - without fee, provided that the above copyright notice appear in - all copies and that both that the copyright notice and this - permission notice and warranty disclaimer appear in supporting - documentation, and that the name of the author not be used in - advertising or publicity pertaining to distribution of the - software without specific, written prior permission. - - The author disclaim all warranties with regard to this - software, including all implied warranties of merchantability - and fitness. In no event shall the author be liable for any - special, indirect or consequential damages or any damages - whatsoever resulting from loss of use, data or profits, whether - in an action of contract, negligence or other tortious action, - arising out of or in connection with the use or performance of - this software. -*/ - -#include "ServiceDiscoveryProtocol.h" - -void ServiceDiscovery_ProcessPacket(void* Data, uint16_t Length, Bluetooth_Channel_t* Channel) -{ - SDP_PDUHeader_t* SDPHeader = (SDP_PDUHeader_t*)Data; - SDPHeader->ParameterLength = SwapEndian_16(SDPHeader->ParameterLength); - - BT_SDP_DEBUG(1, "<< Service Discovery Packet", NULL); - BT_SDP_DEBUG(2, "-- PDU ID: 0x%02X", SDPHeader->PDU); - BT_SDP_DEBUG(2, "-- Param Length: 0x%04X", SDPHeader->ParameterLength); -} +/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaim all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +#define INCLUDE_FROM_SERVICEDISCOVERYPROTOCOL_C +#include "ServiceDiscoveryProtocol.h" + +/** Service Discovery Protocol attribute, indicationg the service's name. */ +SERVICE_ATTRIBUTE_TEXT(SDP_Attribute_Name, "SDP"); +/** Service Discovery Protocol attribute, indicationg the service's description. */ +SERVICE_ATTRIBUTE_TEXT(SDP_Attribute_Description, "BT Service Discovery"); +/** Service Discovery Protocol attribute, indicationg the service's availability. */ +SERVICE_ATTRIBUTE_LEN8(SDP_Attribute_Availability, SDP_DATATYPE_UnsignedInt, 1, {0xFF}); +/** Service Discovery Protocol attribute table, listing all supported attributes of the service. */ +const ServiceAttributeTable_t SDP_Attribute_Table[] PROGMEM = + { + {.AttributeID = SDP_ATTRIBUTE_NAME , .Data = &SDP_Attribute_Name}, + {.AttributeID = SDP_ATTRIBUTE_DESCRIPTION , .Data = &SDP_Attribute_Description}, + {.AttributeID = SDP_ATTRIBUTE_AVAILABILITY, .Data = &SDP_Attribute_Availability}, + SERVICE_ATTRIBUTE_TABLE_TERMINATOR + }; + +/** RFCOMM Service attribute, indicationg the service's name. */ +SERVICE_ATTRIBUTE_TEXT(RFCOMM_Attribute_Name, "RFCOMM"); +/** RFCOMM Service attribute, indicationg the service's description. */ +SERVICE_ATTRIBUTE_TEXT(RFCOMM_Attribute_Description, "Virtual Serial"); +/** RFCOMM Service attribute, indicationg the service's availability. */ +SERVICE_ATTRIBUTE_LEN8(RFCOMM_Attribute_Availability, SDP_DATATYPE_UnsignedInt, 1, {0xFF}); +/** RFCOMM Service attribute table, listing all supported attributes of the service. */ +const ServiceAttributeTable_t RFCOMM_Attribute_Table[] PROGMEM = + { + {.AttributeID = SDP_ATTRIBUTE_NAME , .Data = &RFCOMM_Attribute_Name}, + {.AttributeID = SDP_ATTRIBUTE_DESCRIPTION , .Data = &RFCOMM_Attribute_Description}, + {.AttributeID = SDP_ATTRIBUTE_AVAILABILITY, .Data = &RFCOMM_Attribute_Availability}, + SERVICE_ATTRIBUTE_TABLE_TERMINATOR + }; + +/** Master service table, listing all supported services (and their attribute tables) of the device, including + * each service's UUID. + */ +const ServiceTable_t SDP_Services_Table[] = + { + { // 128-bit UUID for the SDP service + .UUID = {BASE_96BIT_UUID, 0x01, 0x00, 0x00, 0x00}, + .AttributeTable = &SDP_Attribute_Table, + }, + { // 128-bit UUID for the RFCOMM service + .UUID = {BASE_96BIT_UUID, 0x03, 0x00, 0x00, 0x00}, + .AttributeTable = &RFCOMM_Attribute_Table, + }, + }; + +/* Base UUID value common to all standardized Bluetooth services */ +const uint8_t BaseUUID[] = {BASE_96BIT_UUID, 0x00, 0x00, 0x00, 0x00}; + + +void ServiceDiscovery_ProcessPacket(void* Data, Bluetooth_Channel_t* Channel) +{ + SDP_PDUHeader_t* SDPHeader = (SDP_PDUHeader_t*)Data; + SDPHeader->ParameterLength = SwapEndian_16(SDPHeader->ParameterLength); + + BT_SDP_DEBUG(1, "SDP Packet Received"); + BT_SDP_DEBUG(2, "-- PDU ID: 0x%02X", SDPHeader->PDU); + BT_SDP_DEBUG(2, "-- Param Length: 0x%04X", SDPHeader->ParameterLength); + + switch (SDPHeader->PDU) + { + case SDP_PDU_SERVICESEARCHREQUEST: + ServiceDiscovery_ProcessServiceSearch(SDPHeader, Channel); + break; + case SDP_PDU_SERVICEATTRIBUTEREQUEST: + ServiceDiscovery_ProcessServiceAttribute(SDPHeader, Channel); + break; + case SDP_PDU_SERVICESEARCHATTRIBUTEREQUEST: + ServiceDiscovery_ProcessServiceSearchAttribute(SDPHeader, Channel); + break; + } +} + +static void ServiceDiscovery_ProcessServiceSearch(SDP_PDUHeader_t* SDPHeader, Bluetooth_Channel_t* Channel) +{ + BT_SDP_DEBUG(1, "<< Service Search"); +} + +static void ServiceDiscovery_ProcessServiceAttribute(SDP_PDUHeader_t* SDPHeader, Bluetooth_Channel_t* Channel) +{ + BT_SDP_DEBUG(1, "<< Service Attribute"); +} + +static void ServiceDiscovery_ProcessServiceSearchAttribute(SDP_PDUHeader_t* SDPHeader, Bluetooth_Channel_t* Channel) +{ + const void* CurrentParameter = ((void*)SDPHeader + sizeof(SDP_PDUHeader_t)); + + BT_SDP_DEBUG(1, "<< Service Search Attribute"); + + uint8_t UUIDList[12][UUID_SIZE_BYTES]; + uint8_t TotalUUIDs = ServiceDiscovery_GetUUIDList(UUIDList, &CurrentParameter); + BT_SDP_DEBUG(2, "-- Total UUIDs: %d", TotalUUIDs); + + uint16_t MaxAttributeSize = ServiceDiscovery_Read16BitParameter(&CurrentParameter); + BT_SDP_DEBUG(2, "-- Max Return Attribute Bytes: 0x%04X", MaxAttributeSize); + + struct + { + SDP_PDUHeader_t SDPHeader; + uint16_t AttributeListByteCount; + uint8_t ResponseData[100]; + } ResponsePacket; + + if (MaxAttributeSize > sizeof(ResponsePacket.ResponseData)) + MaxAttributeSize = sizeof(ResponsePacket.ResponseData); + + ResponsePacket.AttributeListByteCount = ServiceDiscovery_ProcessAttributes(UUIDList, TotalUUIDs, + ResponsePacket.ResponseData, + MaxAttributeSize, &CurrentParameter); + ResponsePacket.SDPHeader.PDU = SDP_PDU_SERVICESEARCHATTRIBUTERESPONSE; + ResponsePacket.SDPHeader.TransactionID = SDPHeader->TransactionID; + ResponsePacket.SDPHeader.ParameterLength = (ResponsePacket.AttributeListByteCount + sizeof(ResponsePacket.AttributeListByteCount)); + + Bluetooth_SendPacket(&ResponsePacket, (sizeof(ResponsePacket.SDPHeader) + ResponsePacket.SDPHeader.ParameterLength), + Channel); +} + +static uint8_t ServiceDiscovery_ProcessAttributes(uint8_t UUIDList[][UUID_SIZE_BYTES], const uint8_t TotalUUIDs, uint8_t* ResponseBuffer, + uint8_t MaxResponseSize, const void** CurrentParameter) +{ + uint16_t* AttributeResponseSize = ServiceDiscovery_AddDataElementHeader(&ResponseBuffer, SDP_DATATYPE_UnsignedInt); + uint8_t ElementHeaderSize; + + uint16_t AttributeIDListLength = ServiceDiscovery_GetDataElementSize(CurrentParameter, &ElementHeaderSize); + BT_SDP_DEBUG(2, "-- Total Attribute Length: 0x%04X", AttributeIDListLength); + while (AttributeIDListLength) + { + uint8_t AttributeLength = ServiceDiscovery_GetDataElementSize(CurrentParameter, &ElementHeaderSize); + uint32_t Attribute = 0; + + memcpy(&((char*)&Attribute)[sizeof(uint32_t) - AttributeLength], *CurrentParameter, AttributeLength); + + BT_SDP_DEBUG(2, "-- Attribute(%d): 0x%08lX", AttributeLength, Attribute); + + *AttributeResponseSize += ServiceDiscovery_GetAttribute(UUIDList, TotalUUIDs, Attribute, &ResponseBuffer, + (MaxResponseSize - *AttributeResponseSize)); + + AttributeIDListLength -= (AttributeLength + ElementHeaderSize); + *CurrentParameter += AttributeLength; + } + + return *AttributeResponseSize; +} + +static uint8_t ServiceDiscovery_GetAttribute(uint8_t UUIDList[][UUID_SIZE_BYTES], const uint8_t TotalUUIDs, const uint32_t Attribute, + uint8_t** DataBuffer, uint8_t BufferLen) +{ + for (uint8_t CurrTableItem = 0; CurrTableItem < (sizeof(SDP_Services_Table) / sizeof(ServiceTable_t)); CurrTableItem++) + { + for (uint8_t CurrUUIDIndex = 0; CurrUUIDIndex < TotalUUIDs; CurrUUIDIndex++) + { + if (!(memcmp(SDP_Services_Table[CurrTableItem].UUID, UUIDList[CurrUUIDIndex], UUID_SIZE_BYTES))) + { + const ServiceAttributeTable_t* AttributeTable = SDP_Services_Table[CurrTableItem].AttributeTable; + + // TODO: Process attribute table + BT_SDP_DEBUG(2, "FOUND UUID IN TABLE"); + + break; + } + } + } + + return 0; +} + +static uint8_t ServiceDiscovery_GetUUIDList(uint8_t UUIDList[][UUID_SIZE_BYTES], const void** CurrentParameter) +{ + uint8_t ElementHeaderSize; + uint8_t TotalUUIDs = 0; + + uint16_t ServicePatternLength = ServiceDiscovery_GetDataElementSize(CurrentParameter, &ElementHeaderSize); + BT_SDP_DEBUG(2, "-- Total UUID Length: 0x%04X", ServicePatternLength); + while (ServicePatternLength) + { + uint8_t* CurrentUUID = UUIDList[TotalUUIDs++]; + uint8_t UUIDLength = ServiceDiscovery_GetDataElementSize(CurrentParameter, &ElementHeaderSize); + + memcpy(CurrentUUID, BaseUUID, sizeof(BaseUUID)); + memcpy(&CurrentUUID[(UUIDLength <= 32) ? (sizeof(BaseUUID) - 32) : 0], *CurrentParameter, UUIDLength); + + BT_SDP_DEBUG(2, "-- UUID (%d): 0x%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X", + UUIDLength, + CurrentUUID[15], CurrentUUID[14], CurrentUUID[13], CurrentUUID[12], + CurrentUUID[11], CurrentUUID[10], CurrentUUID[9], CurrentUUID[8], + CurrentUUID[7], CurrentUUID[6], CurrentUUID[5], CurrentUUID[4], + CurrentUUID[3], CurrentUUID[2], CurrentUUID[1], CurrentUUID[0]); + + ServicePatternLength -= (UUIDLength + ElementHeaderSize); + *CurrentParameter += UUIDLength; + } + + return TotalUUIDs; +} + +static uint32_t ServiceDiscovery_GetDataElementSize(const void** DataElementHeader, uint8_t* ElementHeaderSize) +{ + /* Fetch the size of the Data Element structure from the header, increment the current buffer pos */ + uint8_t SizeIndex = (*((uint8_t*)*DataElementHeader) & 0x07); + *DataElementHeader += sizeof(uint8_t); + + uint32_t ElementValue; + + /* Convert the Data Element size index into a size in bytes */ + switch (SizeIndex) + { + case 5: + ElementValue = *((uint8_t*)*DataElementHeader); + *DataElementHeader += sizeof(uint8_t); + *ElementHeaderSize = (1 + sizeof(uint8_t)); + break; + case 6: + ElementValue = *((uint16_t*)*DataElementHeader); + *DataElementHeader += sizeof(uint16_t); + *ElementHeaderSize = (1 + sizeof(uint16_t)); + break; + case 7: + ElementValue = *((uint32_t*)*DataElementHeader); + *DataElementHeader += sizeof(uint32_t); + *ElementHeaderSize = (1 + sizeof(uint32_t)); + break; + default: + ElementValue = (1 << SizeIndex); + *ElementHeaderSize = 1; + break; + } + + return ElementValue; +}