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// Copyright 2021 Google Inc. All rights reserved.
//
// 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.
package java
import (
"path/filepath"
"sort"
"strings"
"android/soong/android"
"android/soong/cc"
"android/soong/fuzz"
"github.com/google/blueprint"
"github.com/google/blueprint/proptools"
)
const (
hostString = "host"
targetString = "target"
deviceString = "device"
)
// Any shared libs for these deps will also be packaged
var artDeps = []string{"libdl_android"}
func init() {
RegisterJavaFuzzBuildComponents(android.InitRegistrationContext)
}
func RegisterJavaFuzzBuildComponents(ctx android.RegistrationContext) {
ctx.RegisterModuleType("java_fuzz", JavaFuzzFactory)
ctx.RegisterParallelSingletonType("java_fuzz_packaging", javaFuzzPackagingFactory)
}
type JavaFuzzTest struct {
Test
fuzzPackagedModule fuzz.FuzzPackagedModule
jniFilePaths android.Paths
}
// java_fuzz builds and links sources into a `.jar` file for the device.
// This generates .class files in a jar which can then be instrumented before
// fuzzing in Android Runtime (ART: Android OS on emulator or device)
func JavaFuzzFactory() android.Module {
module := &JavaFuzzTest{}
module.addHostAndDeviceProperties()
module.AddProperties(&module.testProperties)
module.AddProperties(&module.fuzzPackagedModule.FuzzProperties)
module.Module.properties.Installable = proptools.BoolPtr(true)
module.Module.dexpreopter.isTest = true
module.Module.linter.properties.Lint.Test = proptools.BoolPtr(true)
module.Module.sourceProperties.Test_only = proptools.BoolPtr(true)
module.Module.sourceProperties.Top_level_test_target = true
android.AddLoadHook(module, func(ctx android.LoadHookContext) {
disableLinuxBionic := struct {
Target struct {
Linux_bionic struct {
Enabled *bool
}
}
}{}
disableLinuxBionic.Target.Linux_bionic.Enabled = proptools.BoolPtr(false)
ctx.AppendProperties(&disableLinuxBionic)
})
InitJavaModuleMultiTargets(module, android.HostAndDeviceSupported)
return module
}
func (j *JavaFuzzTest) DepsMutator(ctx android.BottomUpMutatorContext) {
if j.Os().Class.String() == deviceString {
j.testProperties.Jni_libs = append(j.testProperties.Jni_libs, artDeps...)
}
if len(j.testProperties.Jni_libs) > 0 {
if j.fuzzPackagedModule.FuzzProperties.Fuzz_config == nil {
config := &fuzz.FuzzConfig{}
j.fuzzPackagedModule.FuzzProperties.Fuzz_config = config
}
// this will be used by the ingestion pipeline to determine the version
// of jazzer to add to the fuzzer package
j.fuzzPackagedModule.FuzzProperties.Fuzz_config.IsJni = proptools.BoolPtr(true)
for _, target := range ctx.MultiTargets() {
sharedLibVariations := append(target.Variations(), blueprint.Variation{Mutator: "link", Variation: "shared"})
ctx.AddFarVariationDependencies(sharedLibVariations, jniLibTag, j.testProperties.Jni_libs...)
}
}
j.deps(ctx)
}
func (j *JavaFuzzTest) GenerateAndroidBuildActions(ctx android.ModuleContext) {
if j.fuzzPackagedModule.FuzzProperties.Corpus != nil {
j.fuzzPackagedModule.Corpus = android.PathsForModuleSrc(ctx, j.fuzzPackagedModule.FuzzProperties.Corpus)
}
if j.fuzzPackagedModule.FuzzProperties.Data != nil {
j.fuzzPackagedModule.Data = android.PathsForModuleSrc(ctx, j.fuzzPackagedModule.FuzzProperties.Data)
}
if j.fuzzPackagedModule.FuzzProperties.Dictionary != nil {
j.fuzzPackagedModule.Dictionary = android.PathForModuleSrc(ctx, *j.fuzzPackagedModule.FuzzProperties.Dictionary)
}
if j.fuzzPackagedModule.FuzzProperties.Fuzz_config != nil {
configPath := android.PathForModuleOut(ctx, "config").Join(ctx, "config.json")
android.WriteFileRule(ctx, configPath, j.fuzzPackagedModule.FuzzProperties.Fuzz_config.String())
j.fuzzPackagedModule.Config = configPath
}
_, sharedDeps := cc.CollectAllSharedDependencies(ctx)
for _, dep := range sharedDeps {
sharedLibInfo, _ := android.OtherModuleProvider(ctx, dep, cc.SharedLibraryInfoProvider)
if sharedLibInfo.SharedLibrary != nil {
arch := "lib"
if sharedLibInfo.Target.Arch.ArchType.Multilib == "lib64" {
arch = "lib64"
}
libPath := android.PathForModuleOut(ctx, filepath.Join(arch, sharedLibInfo.SharedLibrary.Base()))
ctx.Build(pctx, android.BuildParams{
Rule: android.Cp,
Input: sharedLibInfo.SharedLibrary,
Output: libPath,
})
j.jniFilePaths = append(j.jniFilePaths, libPath)
} else {
ctx.PropertyErrorf("jni_libs", "%q of type %q is not supported", dep.Name(), ctx.OtherModuleType(dep))
}
}
j.Test.GenerateAndroidBuildActions(ctx)
}
type javaFuzzPackager struct {
fuzz.FuzzPackager
}
func javaFuzzPackagingFactory() android.Singleton {
return &javaFuzzPackager{}
}
func (s *javaFuzzPackager) GenerateBuildActions(ctx android.SingletonContext) {
// Map between each architecture + host/device combination.
archDirs := make(map[fuzz.ArchOs][]fuzz.FileToZip)
s.FuzzTargets = make(map[string]bool)
ctx.VisitAllModules(func(module android.Module) {
// Discard non-fuzz targets.
javaFuzzModule, ok := module.(*JavaFuzzTest)
if !ok {
return
}
hostOrTargetString := "target"
if javaFuzzModule.Target().HostCross {
hostOrTargetString = "host_cross"
} else if javaFuzzModule.Host() {
hostOrTargetString = "host"
}
fuzzModuleValidator := fuzz.FuzzModule{
javaFuzzModule.ModuleBase,
javaFuzzModule.DefaultableModuleBase,
javaFuzzModule.ApexModuleBase,
}
if ok := fuzz.IsValid(fuzzModuleValidator); !ok {
return
}
archString := javaFuzzModule.Arch().ArchType.String()
archDir := android.PathForIntermediates(ctx, "fuzz", hostOrTargetString, archString)
archOs := fuzz.ArchOs{HostOrTarget: hostOrTargetString, Arch: archString, Dir: archDir.String()}
var files []fuzz.FileToZip
builder := android.NewRuleBuilder(pctx, ctx)
// Package the artifacts (data, corpus, config and dictionary) into a zipfile.
files = s.PackageArtifacts(ctx, module, javaFuzzModule.fuzzPackagedModule, archDir, builder)
// Add .jar
if !javaFuzzModule.Host() {
files = append(files, fuzz.FileToZip{SourceFilePath: javaFuzzModule.implementationJarFile, DestinationPathPrefix: "classes"})
}
files = append(files, fuzz.FileToZip{SourceFilePath: javaFuzzModule.outputFile})
// Add jni .so files
for _, fPath := range javaFuzzModule.jniFilePaths {
files = append(files, fuzz.FileToZip{SourceFilePath: fPath})
}
archDirs[archOs], ok = s.BuildZipFile(ctx, module, javaFuzzModule.fuzzPackagedModule, files, builder, archDir, archString, hostOrTargetString, archOs, archDirs)
if !ok {
return
}
})
s.CreateFuzzPackage(ctx, archDirs, fuzz.Java, pctx)
}
func (s *javaFuzzPackager) MakeVars(ctx android.MakeVarsContext) {
packages := s.Packages.Strings()
sort.Strings(packages)
ctx.Strict("SOONG_JAVA_FUZZ_PACKAGING_ARCH_MODULES", strings.Join(packages, " "))
// Preallocate the slice of fuzz targets to minimize memory allocations.
s.PreallocateSlice(ctx, "ALL_JAVA_FUZZ_TARGETS")
}
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