Add fuzzer for FlexfecSender.
BUG=webrtc:5654
NOTRY=true
Review-Url: https://codereview.webrtc.org/2433373003
Cr-Commit-Position: refs/heads/master@{#14937}
diff --git a/webrtc/test/fuzzers/BUILD.gn b/webrtc/test/fuzzers/BUILD.gn
index c8ea399..141dcfe 100644
--- a/webrtc/test/fuzzers/BUILD.gn
+++ b/webrtc/test/fuzzers/BUILD.gn
@@ -86,6 +86,16 @@
]
}
+webrtc_fuzzer_test("flexfec_sender_fuzzer") {
+ sources = [
+ "flexfec_sender_fuzzer.cc",
+ ]
+ deps = [
+ "../../modules/rtp_rtcp/",
+ ]
+ libfuzzer_options = [ "max_len=200" ]
+}
+
webrtc_fuzzer_test("ulpfec_header_reader_fuzzer") {
sources = [
"ulpfec_header_reader_fuzzer.cc",
diff --git a/webrtc/test/fuzzers/flexfec_sender_fuzzer.cc b/webrtc/test/fuzzers/flexfec_sender_fuzzer.cc
new file mode 100644
index 0000000..bc486dd
--- /dev/null
+++ b/webrtc/test/fuzzers/flexfec_sender_fuzzer.cc
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <memory>
+
+#include "webrtc/modules/rtp_rtcp/include/flexfec_sender.h"
+#include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
+#include "webrtc/modules/rtp_rtcp/source/rtp_packet_to_send.h"
+#include "webrtc/modules/rtp_rtcp/source/byte_io.h"
+#include "webrtc/system_wrappers/include/clock.h"
+
+namespace webrtc {
+
+namespace {
+
+constexpr int kFlexfecPayloadType = 123;
+constexpr uint32_t kMediaSsrc = 1234;
+constexpr uint32_t kFlexfecSsrc = 5678;
+const std::vector<RtpExtension> kNoRtpHeaderExtensions;
+
+} // namespace
+
+void FuzzOneInput(const uint8_t* data, size_t size) {
+ size_t i = 0;
+ if (size < 5) {
+ return;
+ }
+
+ SimulatedClock clock(1 + data[i++]);
+ FlexfecSender sender(kFlexfecPayloadType, kFlexfecSsrc, kMediaSsrc,
+ kNoRtpHeaderExtensions, &clock);
+ FecProtectionParams params = {
+ data[i++], static_cast<int>(data[i++] % 100),
+ data[i++] <= 127 ? kFecMaskRandom : kFecMaskBursty};
+ sender.SetFecParameters(params);
+ uint16_t seq_num = data[i++];
+
+ while (i + 1 < size) {
+ // Everything past the base RTP header (12 bytes) is payload,
+ // from the perspective of FlexFEC.
+ size_t payload_size = data[i++];
+ if (i + kRtpHeaderSize + payload_size >= size)
+ break;
+ std::unique_ptr<uint8_t[]> packet(
+ new uint8_t[kRtpHeaderSize + payload_size]);
+ memcpy(packet.get(), &data[i], kRtpHeaderSize + payload_size);
+ i += kRtpHeaderSize + payload_size;
+ ByteWriter<uint16_t>::WriteBigEndian(&packet[2], seq_num++);
+ ByteWriter<uint32_t>::WriteBigEndian(&packet[8], kMediaSsrc);
+ RtpPacketToSend rtp_packet(nullptr);
+ if (!rtp_packet.Parse(packet.get(), kRtpHeaderSize + payload_size))
+ break;
+ sender.AddRtpPacketAndGenerateFec(rtp_packet);
+ if (sender.FecAvailable()) {
+ std::vector<std::unique_ptr<RtpPacketToSend>> fec_packets =
+ sender.GetFecPackets();
+ }
+ }
+}
+
+} // namespace webrtc
