1 files changed, 57 insertions, 0 deletions
diff --git a/projects/dnsmasq/build.sh b/projects/dnsmasq/build.sh
new file mode 100755
index 000000000..8fc7b21d9
--- /dev/null
+++ b/projects/dnsmasq/build.sh
@@ -0,0 +1,57 @@
+#!/bin/bash -eu
+# Copyright 2021 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.
+#
+################################################################################
+
+export ASAN_OPTIONS="detect_leaks=0"
+
+git apply  --ignore-space-change --ignore-whitespace $SRC/fuzz_patch.patch 
+
+export OSS_CFLAGS="$CFLAGS -g"
+
+sed -i 's/CFLAGS        =/CFLAGS        = ${OSS_CFLAGS} /g' ./Makefile
+sed -i 's/LDFLAGS       =/LDFLAGS       = ${OSS_CFLAGS} /g' ./Makefile
+
+# Do some modificatiosn to the source
+sed -i 's/recvmsg(/fuzz_recvmsg(/g' ./src/dhcp-common.c 
+sed -i 's/recvmsg(/fuzz_recvmsg(/g' ./src/netlink.c 
+sed -i 's/ioctl(/fuzz_ioctl(/g' ./src/dhcp.c
+sed -i 's/ioctl(/fuzz_ioctl(/g' ./src/network.c
+
+sed -i 's/if (errno != 0/if (errno == 123123/g' ./src/netlink.c
+
+echo "" >> ./src/dnsmasq.c 
+echo "ssize_t fuzz_recvmsg(int sockfd, struct msghdr *msg, int flags) {return -1;}" >> ./src/dnsmasq.c
+echo "int fuzz_ioctl(int fd, unsigned long request, void *arg) {return -1;}" >> ./src/dnsmasq.c
+make
+
+# Remove main function and create an archive
+cd ./src
+sed -i 's/int main (/int main2 (/g' ./dnsmasq.c
+sed -i 's/fuzz_recvmsg(/fuzz_recvmsg2(/g' ./dnsmasq.c
+sed -i 's/fuzz_ioctl(/fuzz_ioctl2(/g' ./dnsmasq.c
+
+rm dnsmasq.o
+$CC $CFLAGS -c dnsmasq.c -o dnsmasq.o -I./ -DVERSION=\'\"UNKNOWN\"\' 
+ar cr libdnsmasq.a *.o
+
+sed -i 's/class/class2/g' ./dnsmasq.h
+sed -i 's/new/new2/g' ./dnsmasq.h
+
+# Build the fuzzers
+for fuzz_name in dhcp6 rfc1035 auth dhcp util; do
+    $CC $CFLAGS -c $SRC/fuzz_${fuzz_name}.c -I./ -I$SRC/ -DVERSION=\'\"UNKNOWN\"\' -g
+    $CC $CFLAGS $LIB_FUZZING_ENGINE ./fuzz_${fuzz_name}.o libdnsmasq.a -o $OUT/fuzz_${fuzz_name}
+done