107 lines
3.0 KiB
Bash
Executable File
107 lines
3.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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export LC_ALL=C
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set -eu -o pipefail
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AFL_HARDEN=1
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CONFIGURE_FLAGS="--enable-tests=no --enable-fuzz-main"
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ZCUTIL=$(realpath "./zcutil")
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AFL_LOG_DIR="$(pwd)"
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export AFL_LOG_DIR
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for d in src/fuzzing/*/ ; do
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fuzz_cases+="$(basename "$d"), "
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fuzz_cases_choices=("${fuzz_cases_choices[@]}" "$(basename "$d")")
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done
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FUZZ_OPTIONS_STRING="Options are: ${fuzz_cases::-2}"
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required_options_count=0
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DEFAULT_BUILD_CC="CC=$ZCUTIL/afl/zcash-wrapper-gcc"
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DEFAULT_BUILD_CXX="CXX=$ZCUTIL/afl/zcash-wrapper-g++"
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function help {
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cat <<EOF
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A wrapper around ./zcutil/build.sh for instrumenting the build with AFL.
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You may obtain a copy of AFL using ./zcutil/afl/afl-get.sh.
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This script must be run from within the top level directory of a zcash clone.
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Additional arguments are passed-through to build.sh.
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Usage:
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$0 --afl-install=AFL_INSTALL_DIR --fuzz-case=FUZZ_CASE [ OPTIONS ... ] [ ARGUMENTS ... ]
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OPTIONS:
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-a, --disable-harden Turn off AFL_HARDEN. Default: $AFL_HARDEN
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-c, --configure-flags Pass this flags to ./configure. Default: $CONFIGURE_FLAGS
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-f, --fuzz-case $FUZZ_OPTIONS_STRING
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-h, --help Print this help message
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-l, --afl-log Directory to save AFL logs. Default: $AFL_LOG_DIR
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-i, --afl-install Directory where AFL is installed
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-z, --zcutil The zcutil directory. Default $(realpath "./zcutil")
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ARGUMENTS:
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By default we are passing to build.sh the following flags:
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$DEFAULT_BUILD_CC
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$DEFAULT_BUILD_CXX
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EXAMPLE:
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./zcutil/afl/afl-build.sh -i /tmp/afl -f DecodeHexTx
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EOF
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}
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while (( "$#" )); do
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case "$1" in
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-a|--disable-harden)
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AFL_HARDEN=0
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shift
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;;
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-c|--configure-flags)
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CONFIGURE_FLAGS=$2
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shift 2
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;;
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-f|--fuzz-case)
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FUZZ_CASE=$2
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((++required_options_count))
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shift 2
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;;
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-h|--help)
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help
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exit 0
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;;
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-i|--afl-install-dir)
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AFL_INSTALL_DIR=$(realpath "$2")
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((++required_options_count))
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shift 2
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;;
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-l|--afl-logs)
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AFL_LOG_DIR=$(realpath "$2")
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shift 2
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;;
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-z|--zcutil)
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ZCUTIL=$(realpath "$2")
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shift 2
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;;
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-?|--*=)
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echo "Error: Unsupported flag $1" >&2
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help
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exit 1
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;;
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esac
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done
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if ((required_options_count < 2)); then
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help
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exit 1
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fi
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if ! [[ "${fuzz_cases_choices[*]} " == *" $FUZZ_CASE "* ]]; then
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echo "fuzz case option is invalid. ($FUZZ_OPTIONS_STRING)"
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exit 1
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fi
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cp "./src/fuzzing/$FUZZ_CASE/fuzz.cpp" src/fuzz.cpp
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CONFIGURE_FLAGS="$CONFIGURE_FLAGS" $ZCUTIL/build.sh $DEFAULT_BUILD_CC $DEFAULT_BUILD_CXX AFL_HARDEN=$AFL_HARDEN -j$(nproc) "$@"
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echo "Build finished. You can now run AFL as follows:"
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echo "./zcutil/afl/afl-run.sh -i $AFL_INSTALL_DIR -f $FUZZ_CASE"
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