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libusb: fix build and fuzzer. (#6259)

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DavidKorczynski 2021-08-20 15:49:49 +01:00 committed by GitHub
parent 628264df27
commit c1b71d9304
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1 changed files with 12 additions and 10 deletions
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22
projects/libusb/libusb_fuzzer.cc
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@ -21,29 +21,31 @@
#include "libusb/libusbi.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
struct libusb_transfer *transfer;
struct libusb_transfer *transfer = NULL;
FuzzedDataProvider stream(data, size);
uint8_t bmRequestType = stream.ConsumeIntegral<uint8_t>();
uint8_t bRequest = stream.ConsumeIntegral<uint8_t>();
uint16_t wValue = stream.ConsumeIntegral<uint16_t>();
uint16_t wIndex = stream.ConsumeIntegral<uint16_t>();
uint16_t wLength = stream.ConsumeIntegral<uint16_t>();
std::vector<char> data_ = stream.ConsumeRemainingBytes<char>();
unsigned char* buffer = reinterpret_cast<unsigned char*>(data_.data());
std::string input = stream.ConsumeRandomLengthString();
const char *d = input.c_str();
transfer = libusb_alloc_transfer(0);
if (!transfer) {
return LIBUSB_ERROR_NO_MEM;
}
if (!buffer) {
libusb_free_transfer(transfer);
return LIBUSB_ERROR_NO_MEM;
}
libusb_fill_control_setup((unsigned char *)d, bmRequestType, bRequest, wValue, wIndex, wLength);
libusb_fill_control_setup(
buffer, bmRequestType, bRequest, wValue, wIndex, wLength);
// Cleanup.
// We cannot call libusb_free_transfer as no callbacks has occurred. Calling
// libusb_free_transfer without this will trigger false positive errors.
struct usbi_transfer *itransfer = LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer);
usbi_mutex_destroy(&itransfer->lock);
size_t priv_size = PTR_ALIGN(usbi_backend.transfer_priv_size);
unsigned char *ptr = (unsigned char *)itransfer - priv_size;
free(ptr);
libusb_free_transfer(transfer);
return 0;
}