Add convert_woff2ttf_fuzzer fuzzer for woff2.

woff2/Dockerfile

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+# Copyright 2016 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+FROM ossfuzz/base-libfuzzer
+MAINTAINER mmoroz@chromium.org
+RUN apt-get install -y make autoconf automake libtool
+
+COPY build.sh /src/

woff2/Jenkinsfile

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+// Copyright 2016 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+////////////////////////////////////////////////////////////////////////////////
+
+def libfuzzerBuild = fileLoader.fromGit('infra/libfuzzer-pipeline.groovy',
+                                        'https://github.com/google/oss-fuzz.git',
+                                        'master', null, '')
+
+libfuzzerBuild {
+  git = "https://github.com/google/woff2"
+}

woff2/build.sh

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+#!/bin/bash -eu
+# Copyright 2016 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+cd /src/woff2
+
+# Build the library. Actually there is no 'library' target, so we use .o files.
+# '-no-canonical-prefixes' flag makes clang crazy. Need to avoid it.
+cat brotli/shared.mk | sed -e "s/-no-canonical-prefixes//" \
+> brotli/shared.mk.temp
+mv brotli/shared.mk.temp brotli/shared.mk
+
+cat Makefile | sed -e "s/-no-canonical-prefixes//" \
+> Makefile.temp
+mv Makefile.temp Makefile
+
+# woff2 uses LFLAGS instead of LDFLAGS.
+export LFLAGS=$LDFLAGS
+make CC="$CC $CFLAGS" CXX="$CXX $CXXFLAGS" clean all
+
+# To avoid multiple main() definitions.
+rm src/woff2_compress.o src/woff2_decompress.o
+
+# Build the fuzzer.
+fuzzer=convert_woff2ttf_fuzzer
+$CXX $CXXFLAGS -std=c++11 -Isrc \
+    /src/oss-fuzz/woff2/$fuzzer.cc -o /out/$fuzzer \
+    /work/libfuzzer/*.o src/*.o brotli/dec/*.o brotli/enc/*.o $LDFLAGS

woff2/convert_woff2ttf_fuzzer.cc

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+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "woff2_dec.h"
+
+// Entry point for LibFuzzer.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  std::string buf;
+  woff2::WOFF2StringOut out(&buf);
+  out.SetMaxSize(30 * 1024 * 1024);
+  woff2::ConvertWOFF2ToTTF(data, size, &out);
+  return 0;
+}

woff2/convert_woff2ttf_fuzzer.options

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+[libfuzzer]
+max_len = 1000000