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[clamav] Add flex, bison to Dockerfile (#3755) 

Flex & Bison are needed to generate source files for yara syntax
support. While the generated source are currently in the clamav-devel
repo, the build system sometimes thinks the files must be regenerated.

In the future, these and the autotools generated files will be removed
from the clamav-devel repo and will need to be generated for every
build.

We're also planning to add CMake tooling (still a work in progress).

Once the generated files are removed, we'll either have ot build the
fuzz targets with CMake or bring in autoconf, automake, m4, libtool, and
pkg-config to generate the files in build.sh. At that time, we should
also update build.sh to build the dependencies statically, many of which
are missing at present meaning we're not getting great code coverage.
We'll also want to load a small signature set to improve code coverage
for the fuzz targets.
This commit is contained in:
Micah Snyder 2020-05-03 17:28:30 -04:00 committed by GitHub
parent c562afe930
commit 83ee390bc0
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 34 additions and 14 deletions
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5
projects/clamav/Dockerfile
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@ -16,7 +16,10 @@
FROM gcr.io/oss-fuzz-base/base-builder
MAINTAINER clamav.fuzz@gmail.com
RUN apt-get update && apt-get install -y libssl-dev libcurl4-openssl-dev
RUN apt-get update && apt-get install -y \
flex bison \
libssl-dev \
libcurl4-openssl-dev
RUN git clone --depth 1 https://github.com/Cisco-Talos/clamav-devel.git
RUN git clone --depth 1 https://github.com/Cisco-Talos/clamav-fuzz-corpus.git

43
projects/clamav/build.sh
View File

@ -15,13 +15,30 @@
#
################################################################################
set -ex
#
# Build the library.
#
rm -rf ${WORK}/build
mkdir -p ${WORK}/build
cd ${WORK}/build
ac_cv_c_mmap_anonymous=no ${SRC}/clamav-devel/configure --disable-mempool --enable-fuzz=yes --with-libjson=no --with-pcre=no --enable-static=yes --enable-shared=no --disable-llvm --host=x86_64-unknown-linux-gnu
#
# Run ./configure
#
ac_cv_c_mmap_anonymous=no \
${SRC}/clamav-devel/configure \
--disable-mempool \
--enable-fuzz=yes \
--with-libjson=no \
--with-pcre=no \
--enable-static=yes \
--enable-shared=no \
--disable-llvm \
--host=x86_64-unknown-linux-gnu
# Build libclamav
make clean
make -j"$(nproc)"
@ -40,16 +57,16 @@ cp ./fuzz/clamav_* ${OUT}/.
mkdir ${WORK}/all-scantype-seeds
for type in ARCHIVE MAIL OLE2 PDF HTML PE ELF SWF XMLDOCS HWP3; do
# Prepare seed corpus for the type-specific fuzz targets.
zip ${OUT}/clamav_scanfile_${type}_fuzzer_seed_corpus.zip ${SRC}/clamav-fuzz-corpus/scantype/${type}/*
zip ${OUT}/clamav_scanmap_${type}_fuzzer_seed_corpus.zip ${SRC}/clamav-fuzz-corpus/scantype/${type}/*
# Prepare seed corpus for the type-specific fuzz targets.
zip ${OUT}/clamav_scanfile_${type}_fuzzer_seed_corpus.zip ${SRC}/clamav-fuzz-corpus/scantype/${type}/*
zip ${OUT}/clamav_scanmap_${type}_fuzzer_seed_corpus.zip ${SRC}/clamav-fuzz-corpus/scantype/${type}/*
# Prepare dictionary for the type-specific fuzz targets (may not exist for all types).
cp ${SRC}/clamav-fuzz-corpus/scantype/${type}.dict ${OUT}/clamav_scanfile_${type}_fuzzer.dict 2>/dev/null || :
cp ${SRC}/clamav-fuzz-corpus/scantype/${type}.dict ${OUT}/clamav_scanmap_${type}_fuzzer.dict 2>/dev/null || :
# Prepare dictionary for the type-specific fuzz targets (may not exist for all types).
cp ${SRC}/clamav-fuzz-corpus/scantype/${type}.dict ${OUT}/clamav_scanfile_${type}_fuzzer.dict 2>/dev/null || :
cp ${SRC}/clamav-fuzz-corpus/scantype/${type}.dict ${OUT}/clamav_scanmap_${type}_fuzzer.dict 2>/dev/null || :
# Copy seeds for the generic fuzz target.
cp ${SRC}/clamav-fuzz-corpus/scantype/${type}/* ${WORK}/all-scantype-seeds/
# Copy seeds for the generic fuzz target.
cp ${SRC}/clamav-fuzz-corpus/scantype/${type}/* ${WORK}/all-scantype-seeds/
done
# Prepare seed corpus for the generic fuzz target.
@ -61,9 +78,9 @@ rm -r ${WORK}/all-scantype-seeds
# `dbload`
# --------
for type in CDB CFG CRB FP FTM HDB HSB IDB IGN IGN2 LDB MDB MSB NDB PDB WDB YARA; do
# Prepare seed corpus for the type-specific fuzz targets.
zip ${OUT}/clamav_dbload_${type}_fuzzer_seed_corpus.zip ${SRC}/clamav-fuzz-corpus/database/${type}/*
# Prepare seed corpus for the type-specific fuzz targets.
zip ${OUT}/clamav_dbload_${type}_fuzzer_seed_corpus.zip ${SRC}/clamav-fuzz-corpus/database/${type}/*
# Prepare dictionary for the type-specific fuzz targets (may not exist for all types).
cp ${SRC}/clamav-fuzz-corpus/database/${type}.dict ${OUT}/clamav_dbload_${type}_fuzzer.dict 2>/dev/null || :
# Prepare dictionary for the type-specific fuzz targets (may not exist for all types).
cp ${SRC}/clamav-fuzz-corpus/database/${type}.dict ${OUT}/clamav_dbload_${type}_fuzzer.dict 2>/dev/null || :
done