diff options
Diffstat (limited to 'src/test/test_bitcoin_fuzzy.cpp')
-rw-r--r-- | src/test/test_bitcoin_fuzzy.cpp | 52 |
1 files changed, 40 insertions, 12 deletions
diff --git a/src/test/test_bitcoin_fuzzy.cpp b/src/test/test_bitcoin_fuzzy.cpp index de14251601..581ad2ffa0 100644 --- a/src/test/test_bitcoin_fuzzy.cpp +++ b/src/test/test_bitcoin_fuzzy.cpp @@ -48,8 +48,8 @@ enum TEST_ID { TEST_ID_END }; -bool read_stdin(std::vector<char> &data) { - char buffer[1024]; +bool read_stdin(std::vector<uint8_t> &data) { + uint8_t buffer[1024]; ssize_t length=0; while((length = read(STDIN_FILENO, buffer, 1024)) > 0) { data.insert(data.end(), buffer, buffer+length); @@ -59,15 +59,11 @@ bool read_stdin(std::vector<char> &data) { return length==0; } -int do_fuzz() -{ - std::vector<char> buffer; - if (!read_stdin(buffer)) return 0; - +int test_one_input(std::vector<uint8_t> buffer) { if (buffer.size() < sizeof(uint32_t)) return 0; uint32_t test_id = 0xffffffff; - memcpy(&test_id, &buffer[0], sizeof(uint32_t)); + memcpy(&test_id, buffer.data(), sizeof(uint32_t)); buffer.erase(buffer.begin(), buffer.begin() + sizeof(uint32_t)); if (test_id >= TEST_ID_END) return 0; @@ -255,9 +251,32 @@ int do_fuzz() return 0; } +static std::unique_ptr<ECCVerifyHandle> globalVerifyHandle; +void initialize() { + globalVerifyHandle = std::unique_ptr<ECCVerifyHandle>(new ECCVerifyHandle()); +} + +// This function is used by libFuzzer +extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { + test_one_input(std::vector<uint8_t>(data, data + size)); + return 0; +} + +// This function is used by libFuzzer +extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv) { + initialize(); + return 0; +} + +// Disabled under WIN32 due to clash with Cygwin's WinMain. +#ifndef WIN32 +// Declare main(...) "weak" to allow for libFuzzer linking. libFuzzer provides +// the main(...) function. +__attribute__((weak)) +#endif int main(int argc, char **argv) { - ECCVerifyHandle globalVerifyHandle; + initialize(); #ifdef __AFL_INIT // Enable AFL deferred forkserver mode. Requires compilation using // afl-clang-fast++. See fuzzing.md for details. @@ -267,11 +286,20 @@ int main(int argc, char **argv) #ifdef __AFL_LOOP // Enable AFL persistent mode. Requires compilation using afl-clang-fast++. // See fuzzing.md for details. + int ret = 0; while (__AFL_LOOP(1000)) { - do_fuzz(); + std::vector<uint8_t> buffer; + if (!read_stdin(buffer)) { + continue; + } + ret = test_one_input(buffer); } - return 0; + return ret; #else - return do_fuzz(); + std::vector<uint8_t> buffer; + if (!read_stdin(buffer)) { + return 0; + } + return test_one_input(buffer); #endif } |