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-rw-r--r--src/test/test_bitcoin_fuzzy.cpp50
1 files changed, 39 insertions, 11 deletions
diff --git a/src/test/test_bitcoin_fuzzy.cpp b/src/test/test_bitcoin_fuzzy.cpp
index 50e4076d07..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);
@@ -59,11 +59,7 @@ 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;
@@ -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
}