Add Telegram Desktop fuzzers

projects/telegram/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
+
+# Clone the repository with fuzzing branch
+RUN git clone --depth 1 https://github.com/telegramdesktop/tdesktop $SRC/tdesktop
+
+# Create fuzzer directory
+RUN mkdir -p $SRC/telegram_fuzzers
+
+# Copy build script and standalone fuzzer sources to fuzzer directory
+COPY build.sh $SRC/
+COPY *.cpp $SRC/telegram_fuzzers/
+
+WORKDIR $SRC/telegram_fuzzers

projects/telegram/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 Telegram Protocol Fuzzers
+# These are standalone fuzzers that don't require the full tdesktop build
+
+cd $SRC/telegram_fuzzers
+
+# List of fuzzers to build
+FUZZERS=(
+    "mtproto_v0_fuzzer"
+    "mtproto_v1_obfuscated_fuzzer"
+    "mtproto_vd_padded_fuzzer"
+    "tl_serialization_fuzzer"
+    "aes_ctr_obfuscation_fuzzer"
+    "aes_ige_encryption_fuzzer"
+    "message_key_derivation_fuzzer"
+    "auth_key_management_fuzzer"
+)
+
+# Build each fuzzer
+for fuzzer in "${FUZZERS[@]}"; do
+    echo "Building $fuzzer..."
+    $CXX $CXXFLAGS -std=c++20 -c "${fuzzer}.cpp" -o "${fuzzer}.o"
+    $CXX $CXXFLAGS $LIB_FUZZING_ENGINE "${fuzzer}.o" -o "$OUT/${fuzzer}"
+done
+
+echo "All fuzzers built successfully!"

projects/telegram/project.yaml

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+homepage: "https://github.com/telegramdesktop/tdesktop"
+language: c++
+primary_contact: "[email protected]"
+main_repo: "https://github.com/telegramdesktop/tdesktop"
+file_github_issue: true
+
+sanitizers:
+  - address
+  - undefined
+  - memory
+
+architectures:
+  - x86_64
+
+help_url: "https://github.com/telegramdesktop/tdesktop/"
+
+view_restrictions: none