libcss: add oss-fuzz support for libcss

projects/libcss/Dockerfile

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+# Copyright 2025 Google LLC
+#
+# 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 gcr.io/oss-fuzz-base/base-builder
+
+RUN apt-get update && apt-get install -y python3-pip ninja-build
+RUN pip3 install meson
+RUN git clone --depth 1 https://gitlab.collabora.com/libcss/libcss.git libcss
+RUN git clone --depth 1 https://gitlab.collabora.com/libcss/libcss-tests.git libcss-tests
+WORKDIR libcss
+COPY build.sh $SRC/
+
+

projects/libcss/build.sh

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+#!/bin/bash -eu
+# Copyright 2025 Google LLC
+#
+# 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.
+#
+################################################################################
+
+# Build libcss and dependencies
+cd $SRC/libcss
+cd build
+meson setup .. --default-library=static
+ninja -j$(nproc)
+ninja install
+cd ../..
+
+
+# Set executable permissions for fuzzer build scripts
+chmod +x $SRC/libcss/test/fuzzers/build_google_oss_fuzzers.sh
+chmod +x $SRC/libcss/test/fuzzers/build_seed_corpus.sh
+
+# Build fuzzers and seed corpus
+$SRC/libcss/test/fuzzers/build_google_oss_fuzzers.sh
+$SRC/libcss/test/fuzzers/build_seed_corpus.sh

projects/libcss/project.yaml

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+homepage: "https://gitlab.collabora.com/libcss"
+primary_contact: "[email protected]"
+language: c
+fuzzing_engines:
+  - libfuzzer
+  - afl
+  - honggfuzz
+sanitizers:
+  - address
+  - memory
+  - undefined
+main_repo: 'https://gitlab.collabora.com/libcss/libcss.git'