#!/usr/bin/env bash

# Copyright The containerd Authors.

# 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.

set -o nounset

set -o pipefail

set -o errexit

set -x

IFS=$'\n'

compile_fuzzers() {

local regex=$1

local compile_fuzzer=$2

local blocklist=$3

for line in $(git grep --full-name "$regex" | grep -v -E "$blocklist"); do

if [[ "$line" =~ (.*)/.*:.*(Fuzz[A-Za-z0-9]+) ]]; then

local pkg=${BASH_REMATCH[1]}

local func=${BASH_REMATCH[2]}

"$compile_fuzzer" "github.com/containerd/containerd/v2/$pkg" "$func" "fuzz_$func"

else

echo "failed to parse: $line"

exit 1

fi

done

}

apt-get update && apt-get install -y wget

cd $SRC

wget --quiet https://go.dev/dl/go1.26.2.linux-amd64.tar.gz

mkdir temp-go

rm -rf /root/.go/*

tar -C temp-go/ -xzf go1.26.2.linux-amd64.tar.gz

mv temp-go/go/* /root/.go/

cd $SRC/containerd

printf "package client\nimport _ \"github.com/AdamKorcz/go-118-fuzz-build/testing\"\n" > client/registerfuzzdep.go

go mod tidy

cd "$(dirname "${BASH_SOURCE[0]}")"

cd ../../

rm -r vendor

# Add temporary CXXFLAGS

OLDCXXFLAGS=$CXXFLAGS

export CXXFLAGS="$CXXFLAGS -lresolv"

# Change path of socket since OSS-fuzz does not grant access to /run

sed -i 's/\/run\/containerd/\/tmp\/containerd/g' $SRC/containerd/defaults/defaults_unix.go

compile_fuzzers '^func Fuzz.*testing\.F' compile_native_go_fuzzer vendor

compile_fuzzers '^func Fuzz.*data' compile_go_fuzzer '(vendor|Integ)'

# The below fuzzers require more setup than the fuzzers above.

# We need the binaries from "make".

wget --quiet https://github.com/protocolbuffers/protobuf/releases/download/v3.11.4/protoc-3.11.4-linux-x86_64.zip

unzip protoc-3.11.4-linux-x86_64.zip -d /usr/local

export CGO_ENABLED=1

export GOARCH=amd64

# Build runc

cd $SRC/

git clone https://github.com/opencontainers/runc --branch release-1.1

cd runc

make

make install

# Build static containerd

cd $SRC/containerd

make STATIC=1

mkdir $OUT/containerd-binaries || true

cd $SRC/containerd/bin && cp * $OUT/containerd-binaries/ && cd -

# Change defaultState and defaultAddress fron /run/containerd-test to /tmp/containerd-test:

sed -i 's/\/run\/containerd-test/\/tmp\/containerd-test/g' $SRC/containerd/integration/client/client_unix_test.go

cd integration/client

compile_fuzzers '^func FuzzInteg.*testing\.F' compile_native_go_fuzzer vendor

cp $SRC/containerd/contrib/fuzz/*.options $OUT/

cp $SRC/containerd/contrib/fuzz/*.dict $OUT/

# Resume CXXFLAGS

export CXXFLAGS=$OLDCXXFLAGS