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Fixed possible invalid program execution when in host mode if corrupt descriptor lengths are supplied by the attached device.

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Minor code cleanups to add const and reformat where missing, as well as abstract out the internal device signature start address into a macro, so that it can be altered to suit particular devices within a single architecture if needed.

Add missing documentation to the USB_Device_States_t enum.
pull/1469/head
Dean Camera 14 years ago
parent 78e58b6d1c
commit 049e930963
11 changed files with 66 additions and 27 deletions
Show Stats Download Patch File Download Diff File

2
Demos/Host/Incomplete/AndroidAccessoryHost/ConfigDescriptor.c
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@ -90,7 +90,7 @@ uint8_t ProcessConfigurationDescriptor(void)
/* If the endpoint is a IN type endpoint */
if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
DataINEndpoint = EndpointData;
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}

2
LUFA.pnproj
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File diff suppressed because one or more lines are too long

2
LUFA/Drivers/USB/Class/Common/HIDParser.c
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@ -351,7 +351,7 @@ uint16_t USB_GetHIDReportSize(HID_ReportInfo_t* const ParserData,
uint16_t ReportSizeBits = ParserData->ReportIDSizes[i].ReportSizeBits[ReportType];
if (ParserData->ReportIDSizes[i].ReportID == ReportID)
return ((ReportSizeBits >> 3) + ((ReportSizeBits & 0x07) ? 1 : 0));
return (ReportSizeBits / 8) + ((ReportSizeBits % 8) ? 1 : 0);
}
return 0;

22
LUFA/Drivers/USB/Core/AVR8/Device_AVR8.h
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@ -99,16 +99,22 @@
* On unsupported devices, this will evaluate to \ref NO_DESCRIPTOR and so will force the host to create a pseudo-serial
* number for the device.
*/
#define USE_INTERNAL_SERIAL 0xDC
#define USE_INTERNAL_SERIAL 0xDC
/** Length of the device's unique internal serial number, in bits, if present on the selected microcontroller
* model.
*/
#define INTERNAL_SERIAL_LENGTH_BITS 80
#define INTERNAL_SERIAL_LENGTH_BITS 80
/** Start address of the internal serial number, in the appropriate address space, if present on the selected microcontroller
* model.
*/
#define INTERNAL_SERIAL_START_ADDRESS 0x0E
#else
#define USE_INTERNAL_SERIAL NO_DESCRIPTOR
#define USE_INTERNAL_SERIAL NO_DESCRIPTOR
#define INTERNAL_SERIAL_LENGTH_BITS 0
#define INTERNAL_SERIAL_LENGTH_BITS 0
#define INTERNAL_SERIAL_START_ADDRESS 0
#endif
/* Function Prototypes: */
@ -198,12 +204,13 @@
return (UDADDR & (1 << ADDEN));
}
static inline void USB_Device_GetSerialString(uint16_t* UnicodeString)
#if (USE_INTERNAL_SERIAL != NO_DESCRIPTOR)
static inline void USB_Device_GetSerialString(uint16_t* const UnicodeString)
{
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
uint8_t SigReadAddress = 0x0E;
uint8_t SigReadAddress = INTERNAL_SERIAL_START_ADDRESS;
for (uint8_t SerialCharNum = 0; SerialCharNum < (INTERNAL_SERIAL_LENGTH_BITS / 4); SerialCharNum++)
{
@ -223,7 +230,8 @@
SetGlobalInterruptMask(CurrentGlobalInt);
}
#endif
#endif
#endif

10
LUFA/Drivers/USB/Core/ConfigDescriptor.c
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@ -32,8 +32,10 @@
#include "ConfigDescriptor.h"
#if defined(USB_CAN_BE_HOST)
uint8_t USB_Host_GetDeviceConfigDescriptor(uint8_t ConfigNumber, uint16_t* const ConfigSizePtr,
void* BufferPtr, uint16_t BufferSize)
uint8_t USB_Host_GetDeviceConfigDescriptor(const uint8_t ConfigNumber,
uint16_t* const ConfigSizePtr,
void* const BufferPtr,
const uint16_t BufferSize)
{
uint8_t ErrorCode;
uint8_t ConfigHeader[sizeof(USB_Descriptor_Configuration_Header_t)];
@ -114,7 +116,9 @@ void USB_GetNextDescriptorOfTypeAfter(uint16_t* const BytesRem,
USB_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, Type);
}
uint8_t USB_GetNextDescriptorComp(uint16_t* const BytesRem, void** const CurrConfigLoc, ConfigComparatorPtr_t const ComparatorRoutine)
uint8_t USB_GetNextDescriptorComp(uint16_t* const BytesRem,
void** const CurrConfigLoc,
const ConfigComparatorPtr_t const ComparatorRoutine)
{
uint8_t ErrorCode;

13
LUFA/Drivers/USB/Core/ConfigDescriptor.h
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@ -166,8 +166,10 @@
*
* \return A value from the \ref USB_Host_GetConfigDescriptor_ErrorCodes_t enum.
*/
uint8_t USB_Host_GetDeviceConfigDescriptor(uint8_t ConfigNumber, uint16_t* const ConfigSizePtr, void* BufferPtr,
uint16_t BufferSize) ATTR_NON_NULL_PTR_ARG(2) ATTR_NON_NULL_PTR_ARG(3);
uint8_t USB_Host_GetDeviceConfigDescriptor(const uint8_t ConfigNumber,
uint16_t* const ConfigSizePtr,
void* const BufferPtr,
const uint16_t BufferSize) ATTR_NON_NULL_PTR_ARG(2) ATTR_NON_NULL_PTR_ARG(3);
/** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value.
* The bytes remaining value is automatically decremented.
@ -254,7 +256,7 @@
*/
uint8_t USB_GetNextDescriptorComp(uint16_t* const BytesRem,
void** const CurrConfigLoc,
ConfigComparatorPtr_t const ComparatorRoutine);
const ConfigComparatorPtr_t const ComparatorRoutine);
/* Inline Functions: */
/** Skips over the current sub-descriptor inside the configuration descriptor, so that the pointer then
@ -269,8 +271,11 @@
void** CurrConfigLoc)
{
uint16_t CurrDescriptorSize = DESCRIPTOR_CAST(*CurrConfigLoc, USB_Descriptor_Header_t).Size;
if (*BytesRem < CurrDescriptorSize)
CurrDescriptorSize = *BytesRem;
*CurrConfigLoc = ((uint8_t*)*CurrConfigLoc) + CurrDescriptorSize;
*CurrConfigLoc = (void*)((uintptr_t)*CurrConfigLoc + CurrDescriptorSize);
*BytesRem -= CurrDescriptorSize;
}

7
LUFA/Drivers/USB/Core/Device.h
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@ -63,6 +63,13 @@
/* Public Interface - May be used in end-application: */
/* Enums: */
/** Enum for the various states of the USB Device state machine. Only some states are
* implemented in the LUFA library - other states are left to the user to implement.
*
* For information on each possible USB device state, refer to the USB 2.0 specification.
*
* \see \ref USB_DeviceState, which stores the current device state machine state.
*/
enum USB_Device_States_t
{
DEVICE_STATE_Unattached = 0, /**< Internally implemented by the library. This state indicates

23
LUFA/Drivers/USB/Core/UC3/Device_UC3.h
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@ -89,18 +89,24 @@
* On unsupported devices, this will evaluate to \ref NO_DESCRIPTOR and so will force the host to create a pseudo-serial
* number for the device.
*/
#define USE_INTERNAL_SERIAL 0xDC
#define USE_INTERNAL_SERIAL 0xDC
/** Length of the device's unique internal serial number, in bits, if present on the selected microcontroller
* model.
*/
#define INTERNAL_SERIAL_LENGTH_BITS 120
#define INTERNAL_SERIAL_LENGTH_BITS 120
/** Start address of the internal serial number, in the appropriate address space, if present on the selected microcontroller
* model.
*/
#define INTERNAL_SERIAL_START_ADDRESS 0x80800204
#else
#define USE_INTERNAL_SERIAL NO_DESCRIPTOR
#define USE_INTERNAL_SERIAL NO_DESCRIPTOR
#define INTERNAL_SERIAL_LENGTH_BITS 0
#define INTERNAL_SERIAL_LENGTH_BITS 0
#define INTERNAL_SERIAL_START_ADDRESS 0
#endif
/* Function Prototypes: */
/** Sends a Remote Wakeup request to the host. This signals to the host that the device should
* be taken out of suspended mode, and communications should resume.
@ -186,12 +192,13 @@
return AVR32_USBB.UDCON.adden;
}
static inline void USB_Device_GetSerialString(uint16_t* UnicodeString)
#if (USE_INTERNAL_SERIAL != NO_DESCRIPTOR)
static inline void USB_Device_GetSerialString(uint16_t* const UnicodeString)
{
uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
GlobalInterruptDisable();
uint8_t* SigReadAddress = (uint8_t*)0x80800204;
uint8_t* SigReadAddress = (uint8_t*)INTERNAL_SERIAL_START_ADDRESS;
for (uint8_t SerialCharNum = 0; SerialCharNum < (INTERNAL_SERIAL_LENGTH_BITS / 4); SerialCharNum++)
{
@ -211,6 +218,8 @@
SetGlobalInterruptMask(CurrentGlobalInt);
}
#endif
#endif
#endif

2
LUFA/ManPages/ChangeLog.txt
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@ -36,6 +36,7 @@
* - Added new VirtualSerialMassStorage Device ClassDriver demo
* - Added HID class bootloader, compatible with a modified version of the command line Teensy loader from PJRC.com
* - Added LED flashing to the CDC and DFU class bootloaders to indicate when they are running
* - Added new incomplete AndroidAccessoryHost Host LowLevel demo
*
* <b>Changed:</b>
* - Core:
@ -99,6 +100,7 @@
* is found
* - Fixed missing call to Pipe_SetInfiniteINRequests() in the Pipe_ConfigurePipe() routine
* - Fixed Remote Wakeup broken on the AVRs due to the mechanism only operating when the SUSPI bit is set (thanks to Holger Steinhaus)
* - Fixed possible invalid program execution when in host mode if corrupt descriptor lengths are supplied by the attached device
* - Library Applications:
* - Fixed Benito project discarding incoming data from the USB virtual serial port when the USART is busy
* - Fixed broken DFU bootloader, added XPLAIN support for bootloader start when XCK jumpered to ground

1
LUFA/ManPages/FutureChanges.txt
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@ -20,6 +20,7 @@
* -# Add makefile includes to reduce boilerplate in user makefiles
* -# Update stream APIs to use DMA transfers on supported architectures
* -# Pull out third party libraries into a seperate folder and reference them as required
* -# Add a LUFA_YIELD macro for integration into a third-party RTOS
* - Documentation/Support
* -# Add detailed overviews of how each demo works
* -# Add board overviews

9
LUFA/makefile
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@ -58,9 +58,12 @@ LUFA_SRC_SCHEDULER = $(LUFA_ROOT_PATH)/Scheduler/Scheduler.c
# Check to see if the LUFA_PATH variable has not been set (the makefile is not being included from a project makefile)
ifeq ($(origin LUFA_PATH), undefined)
LUFA_SRC_ALL_FILES = $(LUFA_SRC_USB) $(LUFA_SRC_USBCLASS) \
$(LUFA_SRC_TEMPERATURE) $(LUFA_SRC_SERIAL) \
$(LUFA_SRC_TWI) $(LUFA_SRC_SCHEDULER)
LUFA_SRC_ALL_FILES = $(LUFA_SRC_USB) \
$(LUFA_SRC_USBCLASS) \
$(LUFA_SRC_TEMPERATURE) \
$(LUFA_SRC_SERIAL) \
$(LUFA_SRC_TWI) \
$(LUFA_SRC_SCHEDULER)
all:

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