You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
262 lines
11 KiB
262 lines
11 KiB
/*
|
|
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;
|
|
}
|