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-rw-r--r--ossfuzz/round_trip_frame_fuzzer.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/ossfuzz/round_trip_frame_fuzzer.c b/ossfuzz/round_trip_frame_fuzzer.c
new file mode 100644
index 0000000..1eea90c
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+++ b/ossfuzz/round_trip_frame_fuzzer.c
@@ -0,0 +1,39 @@
+/**
+ * This fuzz target performs a lz4 round-trip test (compress & decompress),
+ * compares the result with the original, and calls abort() on corruption.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "fuzz_helpers.h"
+#include "lz4.h"
+#include "lz4frame.h"
+#include "lz4_helpers.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+ uint32_t seed = FUZZ_seed(&data, &size);
+ LZ4F_preferences_t const prefs = FUZZ_randomPreferences(&seed);
+ size_t const dstCapacity = LZ4F_compressFrameBound(size, &prefs);
+ char* const dst = (char*)malloc(dstCapacity);
+ char* const rt = (char*)malloc(size);
+
+ FUZZ_ASSERT(dst);
+ FUZZ_ASSERT(rt);
+
+ /* Compression must succeed and round trip correctly. */
+ size_t const dstSize =
+ LZ4F_compressFrame(dst, dstCapacity, data, size, &prefs);
+ FUZZ_ASSERT(!LZ4F_isError(dstSize));
+ size_t const rtSize = FUZZ_decompressFrame(rt, size, dst, dstSize);
+ FUZZ_ASSERT_MSG(rtSize == size, "Incorrect regenerated size");
+ FUZZ_ASSERT_MSG(!memcmp(data, rt, size), "Corruption!");
+
+ free(dst);
+ free(rt);
+
+ return 0;
+}