mirror of https://github.com/google/oss-fuzz.git
70 lines
3.0 KiB
Bash
Executable File
70 lines
3.0 KiB
Bash
Executable File
#!/bin/bash -eu
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# Copyright 2020 Google Inc.
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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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path=$1
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function=$2
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fuzzer=$3
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tags="-tags gofuzz"
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if [[ $# -eq 4 ]]; then
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tags="-tags $4"
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fi
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# makes directory change temporary
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(
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cd $GOPATH/src/$path || true
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# in the case we are in the right directory, with go.mod but no go.sum
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go mod tidy || true
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# project was downloaded with go get if go list fails
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go list $tags $path || { cd $GOPATH/pkg/mod/ && cd `echo $path | cut -d/ -f1-3 | awk '{print $1"@*"}'`; } || cd -
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# project does not have go.mod if go list fails again
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go list $tags $path || { go mod init $path && go mod tidy ;}
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if [[ $SANITIZER = *coverage* ]]; then
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fuzzed_package=`go list $tags -f '{{.Name}}' $path`
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abspath=`go list $tags -f {{.Dir}} $path`
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cd $abspath
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cp $GOPATH/ossfuzz_coverage_runner.go ./"${function,,}"_test.go
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sed -i -e 's/FuzzFunction/'$function'/' ./"${function,,}"_test.go
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sed -i -e 's/mypackagebeingfuzzed/'$fuzzed_package'/' ./"${function,,}"_test.go
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sed -i -e 's/TestFuzzCorpus/Test'$function'Corpus/' ./"${function,,}"_test.go
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# The repo is the module path/name, which is already created above in case it doesn't exist,
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# but not always the same as the module path. This is necessary to handle SIV properly.
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fuzzed_repo=$(go list $tags -f {{.Module}} "$path")
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abspath_repo=`go list -m $tags -f {{.Dir}} $fuzzed_repo || go list $tags -f {{.Dir}} $fuzzed_repo`
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# give equivalence to absolute paths in another file, as go test -cover uses golangish pkg.Dir
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echo "s=$fuzzed_repo"="$abspath_repo"= > $OUT/$fuzzer.gocovpath
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# Additional packages for which to get coverage.
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pkgaddcov=""
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# to prevent bash from failing about unbound variable
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GO_COV_ADD_PKG_SET=${GO_COV_ADD_PKG:-}
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if [[ -n "${GO_COV_ADD_PKG_SET}" ]]; then
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pkgaddcov=","$GO_COV_ADD_PKG
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abspath_repo=`go list -m $tags -f {{.Dir}} $GO_COV_ADD_PKG || go list $tags -f {{.Dir}} $GO_COV_ADD_PKG`
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echo "s=^$GO_COV_ADD_PKG"="$abspath_repo"= >> $OUT/$fuzzer.gocovpath
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fi
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go test -run Test${function}Corpus -v $tags -coverpkg $fuzzed_repo/...$pkgaddcov -c -o $OUT/$fuzzer $path
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else
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# Compile and instrument all Go files relevant to this fuzz target.
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echo "Running go-fuzz $tags -func $function -o $fuzzer.a $path"
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go-fuzz $tags -func $function -o $fuzzer.a $path
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# Link Go code ($fuzzer.a) with fuzzing engine to produce fuzz target binary.
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$CXX $CXXFLAGS $LIB_FUZZING_ENGINE $fuzzer.a -o $OUT/$fuzzer
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fi
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)
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