X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/a20a9086f76c142bb77293f5de3fe42295d27847..152b2764c3c719e3e9e34ee60b5db8d99ff2611b:/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 c90fccddb..7c996136b 100644 --- a/Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c +++ b/Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c @@ -31,52 +31,47 @@ #define INCLUDE_FROM_SERVICEDISCOVERYPROTOCOL_C #include "ServiceDiscoveryProtocol.h" -/** Service Discovery Protocol attribute, indicationg the service's name. */ -const struct -{ - uint8_t Header; - uint8_t Length; - uint8_t Data[]; -} PROGMEM SDP_Attribute_Name = {(SDP_DATATYPE_String | 5), sizeof("SDP"), "SDP"}; - -/** Service Discovery Protocol attribute, indicationg the service's description. */ -const struct -{ - uint8_t Header; - uint8_t Length; - uint8_t Data[]; -} PROGMEM SDP_Attribute_Description = {(SDP_DATATYPE_String | 5), sizeof("BT Service Discovery"), "BT Service Discovery"}; - -/** Service Discovery Protocol attribute, indicationg the service's availability. */ +/** Service Discovery Protocol attribute, indicating the service's availability. */ const struct { uint8_t Header; uint8_t Data; -} PROGMEM SDP_Attribute_Availability = {(SDP_DATATYPE_UnsignedInt | 0), 0xFF}; +} PROGMEM SDP_Attribute_Availability = {(SDP_DATATYPE_UnsignedInt | SDP_DATASIZE_8Bit), 0xFF}; const struct { uint8_t Header; - uint16_t Data; -} PROGMEM SDP_Attribute_LanguageOffset = {(SDP_DATATYPE_UnsignedInt | 1), SDP_ATTRIBUTE_LANGOFFSET}; + uint32_t Data; +} PROGMEM SDP_Attribute_ServiceHandle = {(SDP_DATATYPE_UnsignedInt | SDP_DATASIZE_32Bit), 0x00010000}; const struct { - uint8_t Header; - uint16_t Data; -} PROGMEM SDP_Attribute_ServiceHandle = {(SDP_DATATYPE_UnsignedInt | 1), 0x0001}; + uint8_t Header; + uint8_t Size; + Version_t VersionList[]; +} PROGMEM SDP_Attribute_Version = + { + .Header = (SDP_DATATYPE_Sequence | SDP_DATASIZE_Variable8Bit), + .Size = (sizeof(Version_t) * 1), + .VersionList = + { + {.Header = (SDP_DATATYPE_UnsignedInt | SDP_DATASIZE_16Bit), .Version = 0x0100} + } + }; const struct { uint8_t Header; - uint8_t Size; + uint16_t Size; ClassUUID_t UUIDList[]; } PROGMEM SDP_Attribute_ServiceClassIDs = { - (SDP_DATATYPE_Sequence | 5), (sizeof(ClassUUID_t) * 1), - { - {.Header = (SDP_DATATYPE_UUID | 5), .Size = UUID_SIZE_BYTES, .UUID = {BASE_96BIT_UUID, 0x01, 0x00, 0x00, 0x00}} - } + .Header = (SDP_DATATYPE_Sequence | SDP_DATASIZE_Variable16Bit), + .Size = (sizeof(ClassUUID_t) * 1), + .UUIDList = + { + {.Header = (SDP_DATATYPE_UUID | SDP_DATASIZE_128Bit), .UUID = {BASE_96BIT_UUID, 0x01, 0x00, 0x00, 0x00}} + } }; /** Service Discovery Protocol attribute table, listing all supported attributes of the service. */ @@ -84,9 +79,7 @@ const ServiceAttributeTable_t SDP_Attribute_Table[] PROGMEM = { {.AttributeID = SDP_ATTRIBUTE_ID_SERVICERECORDHANDLE, .Data = &SDP_Attribute_ServiceHandle }, {.AttributeID = SDP_ATTRIBUTE_ID_SERVICECLASSIDS, .Data = &SDP_Attribute_ServiceClassIDs }, - {.AttributeID = SDP_ATTRIBUTE_ID_LANGIDOFFSET, .Data = &SDP_Attribute_LanguageOffset }, - {.AttributeID = SDP_ATTRIBUTE_ID_NAME, .Data = &SDP_Attribute_Name }, - {.AttributeID = SDP_ATTRIBUTE_ID_DESCRIPTION, .Data = &SDP_Attribute_Description }, + {.AttributeID = SDP_ATTRIBUTE_ID_VERSION, .Data = &SDP_Attribute_Version }, SERVICE_ATTRIBUTE_TABLE_TERMINATOR }; @@ -97,15 +90,9 @@ const ServiceAttributeTable_t SDP_Attribute_Table[] PROGMEM = const ServiceTable_t SDP_Services_Table[] PROGMEM = { { // 128-bit UUID for the SDP service - .UUID = {BASE_96BIT_UUID, 0x01, 0x00, 0x00, 0x00}, + .UUID = {BASE_96BIT_UUID, 0x00, 0x00, 0x00, 0x01}, .AttributeTable = SDP_Attribute_Table, }, -#if 0 - { // 128-bit UUID for the RFCOMM service - .UUID = {BASE_96BIT_UUID, 0x03, 0x00, 0x00, 0x00}, - .AttributeTable = RFCOMM_Attribute_Table, - }, -#endif }; /** Base UUID value common to all standardized Bluetooth services */ @@ -149,7 +136,78 @@ void SDP_ProcessPacket(void* Data, Bluetooth_Channel_t* Channel) */ static void SDP_ProcessServiceSearch(const SDP_PDUHeader_t* const SDPHeader, Bluetooth_Channel_t* const Channel) { + const void* CurrentParameter = ((void*)SDPHeader + sizeof(SDP_PDUHeader_t)); + BT_SDP_DEBUG(1, "<< Service Search"); + + /* Retrieve the list of search UUIDs from the request */ + uint8_t UUIDList[12][UUID_SIZE_BYTES]; + uint8_t TotalUUIDs = SDP_GetUUIDList(UUIDList, &CurrentParameter); + BT_SDP_DEBUG(2, "-- Total UUIDs: %d", TotalUUIDs); + + /* Retrieve the maximum service record reponse count from the request */ + uint16_t MaxServiceRecordCount = SwapEndian_16(*((uint16_t*)CurrentParameter)); + CurrentParameter += sizeof(uint16_t); + BT_SDP_DEBUG(2, "-- Max Return Service Count: 0x%04X", MaxServiceRecordCount); + + struct + { + SDP_PDUHeader_t SDPHeader; + uint16_t TotalServiceRecordCount; + uint16_t CurrentServiceRecordCount; + uint8_t ResponseData[100]; + } ResponsePacket; + + /* Create a pointer to the buffer to indicate the current location for response data to be added */ + void* CurrResponsePos = ResponsePacket.ResponseData; + + uint8_t AddedServiceHandles = 0; + + /* Search through the list of UUIDs one at a time looking for matching search Attributes */ + for (uint8_t CurrUUIDItem = 0; CurrUUIDItem < TotalUUIDs; CurrUUIDItem++) + { + /* Retrieve the attribute table of the current search UUID from the global UUID table if it exists */ + ServiceAttributeTable_t* AttributeTable = SDP_GetAttributeTable(UUIDList[CurrUUIDItem]); + + /* If the UUID does not exist in the global UUID table, continue on to the next search UUID */ + if (AttributeTable == NULL) + continue; + + BT_SDP_DEBUG(2, " -- Found UUID %d in table", CurrUUIDItem); + + /* Retrieve a PROGMEM pointer to the value of the service's record handle */ + const void* AttributeValue = SDP_GetAttributeValue(AttributeTable, SDP_ATTRIBUTE_ID_SERVICERECORDHANDLE); + + /* Copy over the service record handle to the response list */ + uint8_t AttrHeaderSize; + SDP_GetLocalAttributeContainerSize(AttributeValue, &AttrHeaderSize); + memcpy_P(CurrResponsePos, AttributeValue + AttrHeaderSize, sizeof(uint32_t)); + CurrResponsePos += AttrHeaderSize + sizeof(uint32_t); + + /* Increment the total number of service records added to the list */ + AddedServiceHandles++; + } + + /* Continuation state - always zero */ + *((uint8_t*)CurrResponsePos) = 0; + + /* Fill out the service record count values in the returned packet */ + ResponsePacket.TotalServiceRecordCount = SwapEndian_16(AddedServiceHandles); + ResponsePacket.CurrentServiceRecordCount = ResponsePacket.TotalServiceRecordCount; + + /* Fill in the response packet's header */ + ResponsePacket.SDPHeader.PDU = SDP_PDU_SERVICESEARCHRESPONSE; + ResponsePacket.SDPHeader.TransactionID = SDPHeader->TransactionID; + ResponsePacket.SDPHeader.ParameterLength = SwapEndian_16((ResponsePacket.CurrentServiceRecordCount << 2) + + sizeof(ResponsePacket.CurrentServiceRecordCount) + + sizeof(ResponsePacket.TotalServiceRecordCount) + + sizeof(uint8_t)); + + BT_SDP_DEBUG(1, ">> Service Search Response"); + + /* Send the completed response packet to the sender */ + Bluetooth_SendPacket(&ResponsePacket, (sizeof(ResponsePacket.SDPHeader) + ResponsePacket.SDPHeader.ParameterLength), + Channel); } /** Internal processing routine for SDP Service Attribute Requests. @@ -179,7 +237,7 @@ static void SDP_ProcessServiceSearchAttribute(const SDP_PDUHeader_t* const SDPHe BT_SDP_DEBUG(2, "-- Total UUIDs: %d", TotalUUIDs); /* Retrieve the maximum Attribute reponse size from the request */ - uint16_t MaxAttributeSize = *((uint16_t*)CurrentParameter); + uint16_t MaxAttributeSize = SwapEndian_16(*((uint16_t*)CurrentParameter)); CurrentParameter += sizeof(uint16_t); BT_SDP_DEBUG(2, "-- Max Return Attribute Bytes: 0x%04X", MaxAttributeSize); @@ -196,13 +254,13 @@ static void SDP_ProcessServiceSearchAttribute(const SDP_PDUHeader_t* const SDPHe } ResponsePacket; /* Create a pointer to the buffer to indicate the current location for response data to be added */ - uint8_t* CurrResponsePos = ResponsePacket.ResponseData; + void* CurrResponsePos = ResponsePacket.ResponseData; /* Clamp the maximum attribute size to the size of the allocated buffer */ if (MaxAttributeSize > sizeof(ResponsePacket.ResponseData)) MaxAttributeSize = sizeof(ResponsePacket.ResponseData); - /* Add the outer Data Element Sequence header for the retrieved Attributes */ + /* Add the outer Data Element Sequence header for all of the retrieved Attributes */ uint16_t* TotalResponseSize = SDP_AddDataElementHeader16(&CurrResponsePos, SDP_DATATYPE_Sequence); /* Search through the list of UUIDs one at a time looking for matching search Attributes */ @@ -215,6 +273,8 @@ static void SDP_ProcessServiceSearchAttribute(const SDP_PDUHeader_t* const SDPHe if (AttributeTable == NULL) continue; + BT_SDP_DEBUG(2, " -- Found UUID %d in table", CurrUUIDItem); + /* Add an inner Data Element Sequence header for the current UUID's found Attributes */ uint16_t* CurrentUUIDResponseSize = SDP_AddDataElementHeader16(&CurrResponsePos, SDP_DATATYPE_Sequence); @@ -232,48 +292,74 @@ static void SDP_ProcessServiceSearchAttribute(const SDP_PDUHeader_t* const SDPHe /* If the Attribute does not exist in the current UUID's Attribute table, continue to the next Attribute ID */ if (AttributeValue == NULL) continue; - - /* Retrieve the size of the attribute value from its container header */ - uint32_t AttributeValueLength = SDP_GetLocalAttributeContainerSize(AttributeValue); + BT_SDP_DEBUG(2, " -- Add Attribute 0x%04X", CurrAttributeID); - /* Add a Data Element header to the response for the Attribute ID */ - *((uint8_t*)CurrResponsePos) = (1 | SDP_DATATYPE_UnsignedInt); - CurrResponsePos += sizeof(uint8_t); - - /* Add the Attribute ID to the created Data Element */ - *((uint16_t*)CurrResponsePos) = CurrAttributeID; - CurrResponsePos += sizeof(uint16_t); - - /* Copy over the Attribute value Data Element container to the response */ - memcpy_P(CurrResponsePos, AttributeValue, AttributeValueLength); - CurrResponsePos += AttributeValueLength; - /* Increment the current UUID's returned Attribute container size by the number of added bytes */ - *CurrentUUIDResponseSize += sizeof(uint8_t) + sizeof(uint16_t) + AttributeValueLength; + *CurrentUUIDResponseSize += SDP_AddAttributeToResponse(CurrAttributeID, AttributeValue, &CurrResponsePos); } /* Increment the outer container size by the number of added bytes */ *TotalResponseSize += 3 + *CurrentUUIDResponseSize; } + + /* Flip the endianness of the container's size */ + *CurrentUUIDResponseSize = SwapEndian_16(*CurrentUUIDResponseSize); } + + /* Continuation state - always zero */ + *((uint8_t*)CurrResponsePos) = 0; - /* Set the total response list size to the size of the outer container plus its header size */ - ResponsePacket.AttributeListByteCount = 3 + *TotalResponseSize; + /* Set the total response list size to the size of the outer container plus its header size and continuation state */ + ResponsePacket.AttributeListByteCount = SwapEndian_16(3 + *TotalResponseSize); /* Fill in the response packet's header */ ResponsePacket.SDPHeader.PDU = SDP_PDU_SERVICESEARCHATTRIBUTERESPONSE; ResponsePacket.SDPHeader.TransactionID = SDPHeader->TransactionID; - ResponsePacket.SDPHeader.ParameterLength = (ResponsePacket.AttributeListByteCount + sizeof(ResponsePacket.AttributeListByteCount)); + ResponsePacket.SDPHeader.ParameterLength = SwapEndian_16(sizeof(ResponsePacket.AttributeListByteCount) + + (3 + *TotalResponseSize) + + sizeof(uint8_t)); + + /* Flip the endianness of the container's size */ + *TotalResponseSize = SwapEndian_16(*TotalResponseSize); BT_SDP_DEBUG(1, ">> Service Search Attribute Response"); - BT_SDP_DEBUG(2, "-- Total Parameter Length: 0x%04X", ResponsePacket.SDPHeader.ParameterLength); /* Send the completed response packet to the sender */ Bluetooth_SendPacket(&ResponsePacket, (sizeof(ResponsePacket.SDPHeader) + ResponsePacket.SDPHeader.ParameterLength), Channel); } +/** Adds the given attribute ID and value to the reponse buffer, and advances the response buffer pointer past the added data. + * + * \param[in] AttributeID Attribute ID to add to the response buffer + * \param[in] AttributeValue Pointer to the start of the Attribute's value, located in PROGMEM + * \param[in, out] ResponseBuffer Pointer to a buffer where the Attribute and Attribute Value is to be added + * + * \return Number of bytes added to the response buffer + */ +static uint16_t SDP_AddAttributeToResponse(const uint16_t AttributeID, const void* AttributeValue, void** ResponseBuffer) +{ + /* Retrieve the size of the attribute value from its container header */ + uint8_t AttributeHeaderLength; + uint32_t AttributeValueLength = SDP_GetLocalAttributeContainerSize(AttributeValue, &AttributeHeaderLength); + + /* Add a Data Element header to the response for the Attribute ID */ + *((uint8_t*)*ResponseBuffer) = (SDP_DATATYPE_UnsignedInt | SDP_DATASIZE_16Bit); + *ResponseBuffer += sizeof(uint8_t); + + /* Add the Attribute ID to the created Data Element */ + *((uint16_t*)*ResponseBuffer) = SwapEndian_16(AttributeID); + *ResponseBuffer += sizeof(uint16_t); + + /* Copy over the Attribute value Data Element container to the response */ + memcpy_P(*ResponseBuffer, AttributeValue, AttributeHeaderLength + AttributeValueLength); + SwapEndian_n(*ResponseBuffer, AttributeHeaderLength); + *ResponseBuffer += AttributeHeaderLength + AttributeValueLength; + + return (sizeof(uint8_t) + sizeof(uint16_t) + AttributeHeaderLength + AttributeValueLength); +} + /** Retrieves a pointer to the value of the given Attribute ID from the given Attribute table. * * \param[in] AttributeTable Pointer to the Attribute table to search in @@ -309,9 +395,35 @@ static ServiceAttributeTable_t* SDP_GetAttributeTable(const uint8_t* const UUID) /* Search through the global UUID list an item at a time */ for (uint8_t CurrTableItem = 0; CurrTableItem < (sizeof(SDP_Services_Table) / sizeof(ServiceTable_t)); CurrTableItem++) { + /* Read in a pointer to the current UUID table entry's Attribute table */ + ServiceAttributeTable_t* CurrAttributeTable = (ServiceAttributeTable_t*)pgm_read_word(&SDP_Services_Table[CurrTableItem].AttributeTable); + /* If the current table item's UUID matches the search UUID, return a pointer the table item's Attribute table */ if (!(memcmp_P(UUID, SDP_Services_Table[CurrTableItem].UUID, UUID_SIZE_BYTES))) - return (ServiceAttributeTable_t*)pgm_read_word(&SDP_Services_Table[CurrTableItem].AttributeTable); + return CurrAttributeTable; + + /* Retrieve the list of the service's Class UUIDs from its Attribute table */ + void* ClassUUIDs = SDP_GetAttributeValue(CurrAttributeTable, SDP_ATTRIBUTE_ID_SERVICECLASSIDS); + + /* Go to the next UUID in the table if the current item does not have a list of Class UUIDs */ + if (ClassUUIDs == NULL) + continue; + + /* Retrieve the size of the Class UUID list and skip past the header to the first Class UUID in the list */ + uint8_t ClassUUIDListHeaderSize; + uint32_t ClassUUIDListSize = SDP_GetLocalAttributeContainerSize(ClassUUIDs, &ClassUUIDListHeaderSize); + ClassUUIDs += ClassUUIDListHeaderSize; + + /* Check each class UUID in turn for a match */ + while (ClassUUIDListSize) + { + /* Current Service UUID's Class UUID list has a matching entry, return the Attribute table */ + if (!(memcmp_P(UUID, &((ClassUUID_t*)ClassUUIDs)->UUID, UUID_SIZE_BYTES))) + return CurrAttributeTable; + + ClassUUIDListSize -= sizeof(ClassUUID_t); + ClassUUIDs += sizeof(ClassUUID_t); + } } return NULL; @@ -344,7 +456,11 @@ static uint8_t SDP_GetAttributeList(uint16_t AttributeList[][2], const void** co /* If the element is not an Attribute Range, copy over the starting ID to the ending ID to make a range of 1 */ if (AttributeLength == 2) - memcpy(&CurrentAttributeRange[1], *CurrentParameter, 2); + CurrentAttributeRange[1] = CurrentAttributeRange[0]; + + /* Swap the endianness of the attribute range values */ + CurrentAttributeRange[0] = SwapEndian_16(CurrentAttributeRange[0]); + CurrentAttributeRange[1] = SwapEndian_16(CurrentAttributeRange[1]); BT_SDP_DEBUG(2, "-- Attribute: 0x%04X-0x%04X", CurrentAttributeRange[0], CurrentAttributeRange[1]); @@ -404,7 +520,7 @@ static uint8_t SDP_GetUUIDList(uint8_t UUIDList[][UUID_SIZE_BYTES], const void** * * \return Size in bytes of the entire attribute container, including the header */ -static uint32_t SDP_GetLocalAttributeContainerSize(const void* const AttributeData) +static uint32_t SDP_GetLocalAttributeContainerSize(const void* const AttributeData, uint8_t* const HeaderSize) { /* Fetch the size of the Data Element structure from the header */ uint8_t SizeIndex = (pgm_read_byte(AttributeData) & 0x07); @@ -412,14 +528,18 @@ static uint32_t SDP_GetLocalAttributeContainerSize(const void* const AttributeDa /* Convert the Data Element size index into a size in bytes */ switch (SizeIndex) { - case 5: - return (1 + sizeof(uint8_t)) + pgm_read_byte(AttributeData + 1); - case 6: - return (1 + sizeof(uint16_t)) + pgm_read_word(AttributeData + 1); - case 7: - return (1 + sizeof(uint32_t)) + pgm_read_dword(AttributeData + 1); + case SDP_DATASIZE_Variable8Bit: + *HeaderSize = (1 + sizeof(uint8_t)); + return pgm_read_byte(AttributeData + 1); + case SDP_DATASIZE_Variable16Bit: + *HeaderSize = (1 + sizeof(uint16_t)); + return pgm_read_word(AttributeData + 1); + case SDP_DATASIZE_Variable32Bit: + *HeaderSize = (1 + sizeof(uint32_t)); + return pgm_read_dword(AttributeData + 1); default: - return (1 + (1 << SizeIndex)); + *HeaderSize = 1; + return (1 << SizeIndex); } return 0; @@ -439,31 +559,31 @@ static uint32_t SDP_GetDataElementSize(const void** const DataElementHeader, uin uint8_t SizeIndex = (*((uint8_t*)*DataElementHeader) & 0x07); *DataElementHeader += sizeof(uint8_t); - uint32_t ElementValue; + uint32_t ElementValueSize; /* Convert the Data Element size index into a size in bytes */ switch (SizeIndex) { - case 5: - ElementValue = *((uint8_t*)*DataElementHeader); + case SDP_DATASIZE_Variable8Bit: + ElementValueSize = *((uint8_t*)*DataElementHeader); *DataElementHeader += sizeof(uint8_t); *ElementHeaderSize = (1 + sizeof(uint8_t)); break; - case 6: - ElementValue = *((uint16_t*)*DataElementHeader); + case SDP_DATASIZE_Variable16Bit: + ElementValueSize = SwapEndian_16(*((uint16_t*)*DataElementHeader)); *DataElementHeader += sizeof(uint16_t); *ElementHeaderSize = (1 + sizeof(uint16_t)); break; - case 7: - ElementValue = *((uint32_t*)*DataElementHeader); + case SDP_DATASIZE_Variable32Bit: + ElementValueSize = SwapEndian_32(*((uint32_t*)*DataElementHeader)); *DataElementHeader += sizeof(uint32_t); *ElementHeaderSize = (1 + sizeof(uint32_t)); break; default: - ElementValue = (1 << SizeIndex); - *ElementHeaderSize = 1; + ElementValueSize = (1 << SizeIndex); + *ElementHeaderSize = 1; break; } - return ElementValue; + return ElementValueSize; }