58 lines
2.1 KiB
Bash
Executable File
58 lines
2.1 KiB
Bash
Executable File
#!/bin/bash -eu
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# Copyright 2021 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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################################################################################
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export ASAN_OPTIONS="detect_leaks=0"
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git apply --ignore-space-change --ignore-whitespace $SRC/fuzz_patch.patch
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export OSS_CFLAGS="$CFLAGS -g"
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sed -i 's/CFLAGS =/CFLAGS = ${OSS_CFLAGS} /g' ./Makefile
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sed -i 's/LDFLAGS =/LDFLAGS = ${OSS_CFLAGS} /g' ./Makefile
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# Do some modificatiosn to the source
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sed -i 's/recvmsg(/fuzz_recvmsg(/g' ./src/dhcp-common.c
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sed -i 's/recvmsg(/fuzz_recvmsg(/g' ./src/netlink.c
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sed -i 's/ioctl(/fuzz_ioctl(/g' ./src/dhcp.c
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sed -i 's/ioctl(/fuzz_ioctl(/g' ./src/network.c
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sed -i 's/if (errno != 0/if (errno == 123123/g' ./src/netlink.c
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echo "" >> ./src/dnsmasq.c
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echo "ssize_t fuzz_recvmsg(int sockfd, struct msghdr *msg, int flags) {return -1;}" >> ./src/dnsmasq.c
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echo "int fuzz_ioctl(int fd, unsigned long request, void *arg) {return -1;}" >> ./src/dnsmasq.c
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make
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# Remove main function and create an archive
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cd ./src
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sed -i 's/int main (/int main2 (/g' ./dnsmasq.c
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sed -i 's/fuzz_recvmsg(/fuzz_recvmsg2(/g' ./dnsmasq.c
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sed -i 's/fuzz_ioctl(/fuzz_ioctl2(/g' ./dnsmasq.c
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rm dnsmasq.o
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$CC $CFLAGS -c dnsmasq.c -o dnsmasq.o -I./ -DVERSION=\'\"UNKNOWN\"\'
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ar cr libdnsmasq.a *.o
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sed -i 's/class/class2/g' ./dnsmasq.h
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sed -i 's/new/new2/g' ./dnsmasq.h
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# Build the fuzzers
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for fuzz_name in dhcp6 rfc1035 auth dhcp util; do
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$CC $CFLAGS -c $SRC/fuzz_${fuzz_name}.c -I./ -I$SRC/ -DVERSION=\'\"UNKNOWN\"\' -g
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$CC $CFLAGS $LIB_FUZZING_ENGINE ./fuzz_${fuzz_name}.o libdnsmasq.a -o $OUT/fuzz_${fuzz_name}
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done
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