modp_b64: project initialisation

projects/modp_b64/Dockerfile

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+# Copyright 2024 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 \
+    build-essential \
+    autoconf \
+    automake \
+    libtool \
+    pkg-config
+
+RUN git clone https://github.com/Piasy/modp_b64 modp_b64
+WORKDIR $SRC/modp_b64
+
+COPY *_fuzzer.cc build.sh $SRC/

projects/modp_b64/build.sh

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+#!/bin/bash -eu
+#
+# Copyright 2024 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 the source files
+$CXX $CXXFLAGS -I$SRC/modp_b64/modp_b64 -c modp_b64.cc -o $OUT/modp_b64.a
+
+# Build existing fuzzers
+for fuzzers in $(find $SRC -name '*_fuzzer.cc'); do
+    fuzz_basename=$(basename -s .cc $fuzzers)
+    $CC $CXXFLAGS -I$SRC/modp_b64/modp_b64 \
+        -I$SRC/modp_b64 -c $fuzzers -o $fuzz_basename.o
+
+    $CXX $CXXFLAGS $LIB_FUZZING_ENGINE $fuzz_basename.o \
+        -o $OUT/$fuzz_basename $OUT/modp_b64.a
+done

projects/modp_b64/modp_b64_fuzzer.cc

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+// Copyright 2024 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.
+
+#include <string>
+#include <cstddef>
+#include <cstdint>
+#include "modp_b64.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    // Skip this iteration if not enough data
+    if (size < 2) {
+        return 0;
+    }
+
+    // Initialise buffer, input and choice
+    int choice = data[0] % 3;
+    std::string buffer;
+    buffer.resize(modp_b64_encode_len(size));
+    std::string input(reinterpret_cast<const char*>(data), size);
+
+    // Randomly fuzz encode, decode or round trip functions
+    switch (choice) {
+        case 0: {
+            modp_b64_encode(&buffer[0], input.c_str(), size);
+            break;
+        }
+        case 1: {
+            buffer.resize(modp_b64_decode_len(size));
+            modp_b64_decode(&buffer[0], input.c_str(), size);
+            break;
+        }
+        case 2: {
+            modp_b64_encode(input);
+            modp_b64_decode(input);
+            break;
+        }
+        default:
+            break;
+    }
+
+    // Clean up memory
+    buffer.clear();
+    input.clear();
+
+    return 0;
+}
+

projects/modp_b64/project.yaml

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+homepage: "https://github.com/Piasy/modp_b64"
+main_repo: "https://github.com/Piasy/modp_b64"
+language: c++
+vendor_ccs:
+- "[email protected]"
+- "[email protected]"