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// Copyright 2019 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 (
"android/soong/android"
)
func init() {
android.RegisterSingletonType("hiddenapi", hiddenAPISingletonFactory)
}
type hiddenAPISingletonPathsStruct struct {
stubFlags android.OutputPath
flags android.OutputPath
metadata android.OutputPath
}
var hiddenAPISingletonPathsKey = android.NewOnceKey("hiddenAPISingletonPathsKey")
// hiddenAPISingletonPaths creates all the paths for singleton files the first time it is called, which may be
// from a ModuleContext that needs to reference a file that will be created by a singleton rule that hasn't
// yet been created.
func hiddenAPISingletonPaths(ctx android.PathContext) hiddenAPISingletonPathsStruct {
return ctx.Config().Once(hiddenAPISingletonPathsKey, func() interface{} {
return hiddenAPISingletonPathsStruct{
stubFlags: android.PathForOutput(ctx, "hiddenapi", "hiddenapi-stub-flags.txt"),
flags: android.PathForOutput(ctx, "hiddenapi", "hiddenapi-flags.csv"),
metadata: android.PathForOutput(ctx, "hiddenapi", "hiddenapi-greylist.csv"),
}
}).(hiddenAPISingletonPathsStruct)
}
func hiddenAPISingletonFactory() android.Singleton {
return &hiddenAPISingleton{}
}
type hiddenAPISingleton struct {
flags, metadata android.Path
}
// hiddenAPI singleton rules
func (h *hiddenAPISingleton) GenerateBuildActions(ctx android.SingletonContext) {
// Don't run any hiddenapi rules if UNSAFE_DISABLE_HIDDENAPI_FLAGS=true
if ctx.Config().IsEnvTrue("UNSAFE_DISABLE_HIDDENAPI_FLAGS") {
return
}
stubFlagsRule(ctx)
// These rules depend on files located in frameworks/base, skip them if running in a tree that doesn't have them.
if ctx.Config().FrameworksBaseDirExists(ctx) {
h.flags = flagsRule(ctx)
h.metadata = metadataRule(ctx)
} else {
h.flags = emptyFlagsRule(ctx)
}
}
// Export paths to Make. INTERNAL_PLATFORM_HIDDENAPI_FLAGS is used by Make rules in art/ and cts/.
// Both paths are used to call dist-for-goals.
func (h *hiddenAPISingleton) MakeVars(ctx android.MakeVarsContext) {
if ctx.Config().IsEnvTrue("UNSAFE_DISABLE_HIDDENAPI_FLAGS") {
return
}
ctx.Strict("INTERNAL_PLATFORM_HIDDENAPI_FLAGS", h.flags.String())
if h.metadata != nil {
ctx.Strict("INTERNAL_PLATFORM_HIDDENAPI_GREYLIST_METADATA", h.metadata.String())
}
}
// stubFlagsRule creates the rule to build hiddenapi-stub-flags.txt out of dex jars from stub modules and boot image
// modules.
func stubFlagsRule(ctx android.SingletonContext) {
// Public API stubs
publicStubModules := []string{
"android_stubs_current",
}
// Add the android.test.base to the set of stubs only if the android.test.base module is on
// the boot jars list as the runtime will only enforce hiddenapi access against modules on
// that list.
if inList("android.test.base", ctx.Config().BootJars()) {
publicStubModules = append(publicStubModules, "android.test.base.stubs")
}
// System API stubs
systemStubModules := []string{
"android_system_stubs_current",
}
// Test API stubs
testStubModules := []string{
"android_test_stubs_current",
}
// Core Platform API stubs
corePlatformStubModules := []string{
"core.platform.api.stubs",
}
// Allow products to define their own stubs for custom product jars that apps can use.
publicStubModules = append(publicStubModules, ctx.Config().ProductHiddenAPIStubs()...)
systemStubModules = append(systemStubModules, ctx.Config().ProductHiddenAPIStubsSystem()...)
testStubModules = append(testStubModules, ctx.Config().ProductHiddenAPIStubsTest()...)
if ctx.Config().IsEnvTrue("EMMA_INSTRUMENT") {
publicStubModules = append(publicStubModules, "jacoco-stubs")
}
publicStubPaths := make(android.Paths, len(publicStubModules))
systemStubPaths := make(android.Paths, len(systemStubModules))
testStubPaths := make(android.Paths, len(testStubModules))
corePlatformStubPaths := make(android.Paths, len(corePlatformStubModules))
moduleListToPathList := map[*[]string]android.Paths{
&publicStubModules: publicStubPaths,
&systemStubModules: systemStubPaths,
&testStubModules: testStubPaths,
&corePlatformStubModules: corePlatformStubPaths,
}
var bootDexJars android.Paths
ctx.VisitAllModules(func(module android.Module) {
// Collect dex jar paths for the modules listed above.
if j, ok := module.(Dependency); ok {
name := ctx.ModuleName(module)
for moduleList, pathList := range moduleListToPathList {
if i := android.IndexList(name, *moduleList); i != -1 {
pathList[i] = j.DexJar()
}
}
}
// Collect dex jar paths for modules that had hiddenapi encode called on them.
if h, ok := module.(hiddenAPIIntf); ok {
if jar := h.bootDexJar(); jar != nil {
bootDexJars = append(bootDexJars, jar)
}
}
})
var missingDeps []string
// Ensure all modules were converted to paths
for moduleList, pathList := range moduleListToPathList {
for i := range pathList {
if pathList[i] == nil {
if ctx.Config().AllowMissingDependencies() {
missingDeps = append(missingDeps, (*moduleList)[i])
pathList[i] = android.PathForOutput(ctx, "missing")
} else {
ctx.Errorf("failed to find dex jar path for module %q",
(*moduleList)[i])
}
}
}
}
// Singleton rule which applies hiddenapi on all boot class path dex files.
rule := android.NewRuleBuilder()
outputPath := hiddenAPISingletonPaths(ctx).stubFlags
tempPath := android.PathForOutput(ctx, outputPath.Rel()+".tmp")
rule.MissingDeps(missingDeps)
rule.Command().
Tool(pctx.HostBinToolPath(ctx, "hiddenapi")).
Text("list").
FlagForEachInput("--boot-dex=", bootDexJars).
FlagWithInputList("--public-stub-classpath=", publicStubPaths, ":").
FlagWithInputList("--system-stub-classpath=", systemStubPaths, ":").
FlagWithInputList("--test-stub-classpath=", testStubPaths, ":").
FlagWithInputList("--core-platform-stub-classpath=", corePlatformStubPaths, ":").
FlagWithOutput("--out-api-flags=", tempPath)
commitChangeForRestat(rule, tempPath, outputPath)
rule.Build(pctx, ctx, "hiddenAPIStubFlagsFile", "hiddenapi stub flags")
}
// flagsRule creates a rule to build hiddenapi-flags.csv out of flags.csv files generated for boot image modules and
// the greylists.
func flagsRule(ctx android.SingletonContext) android.Path {
var flagsCSV android.Paths
var greylistIgnoreConflicts android.Path
ctx.VisitAllModules(func(module android.Module) {
if h, ok := module.(hiddenAPIIntf); ok {
if csv := h.flagsCSV(); csv != nil {
flagsCSV = append(flagsCSV, csv)
}
} else if ds, ok := module.(*Droidstubs); ok && ctx.ModuleName(module) == "hiddenapi-lists-docs" {
greylistIgnoreConflicts = ds.removedDexApiFile
}
})
if greylistIgnoreConflicts == nil {
ctx.Errorf("failed to find removed_dex_api_filename from hiddenapi-lists-docs module")
return nil
}
rule := android.NewRuleBuilder()
outputPath := hiddenAPISingletonPaths(ctx).flags
tempPath := android.PathForOutput(ctx, outputPath.Rel()+".tmp")
stubFlags := hiddenAPISingletonPaths(ctx).stubFlags
rule.Command().
Tool(android.PathForSource(ctx, "frameworks/base/tools/hiddenapi/generate_hiddenapi_lists.py")).
FlagWithInput("--csv ", stubFlags).
Inputs(flagsCSV).
FlagWithInput("--greylist ",
android.PathForSource(ctx, "frameworks/base/config/hiddenapi-greylist.txt")).
FlagWithInput("--greylist-ignore-conflicts ",
greylistIgnoreConflicts).
FlagWithInput("--greylist-max-p ",
android.PathForSource(ctx, "frameworks/base/config/hiddenapi-greylist-max-p.txt")).
FlagWithInput("--greylist-max-o-ignore-conflicts ",
android.PathForSource(ctx, "frameworks/base/config/hiddenapi-greylist-max-o.txt")).
FlagWithInput("--blacklist ",
android.PathForSource(ctx, "frameworks/base/config/hiddenapi-force-blacklist.txt")).
FlagWithOutput("--output ", tempPath)
commitChangeForRestat(rule, tempPath, outputPath)
rule.Build(pctx, ctx, "hiddenAPIFlagsFile", "hiddenapi flags")
return outputPath
}
// emptyFlagsRule creates a rule to build an empty hiddenapi-flags.csv, which is needed by master-art-host builds that
// have a partial manifest without frameworks/base but still need to build a boot image.
func emptyFlagsRule(ctx android.SingletonContext) android.Path {
rule := android.NewRuleBuilder()
outputPath := hiddenAPISingletonPaths(ctx).flags
rule.Command().Text("rm").Flag("-f").Output(outputPath)
rule.Command().Text("touch").Output(outputPath)
rule.Build(pctx, ctx, "emptyHiddenAPIFlagsFile", "empty hiddenapi flags")
return outputPath
}
// metadataRule creates a rule to build hiddenapi-greylist.csv out of the metadata.csv files generated for boot image
// modules.
func metadataRule(ctx android.SingletonContext) android.Path {
var metadataCSV android.Paths
ctx.VisitAllModules(func(module android.Module) {
if h, ok := module.(hiddenAPIIntf); ok {
if csv := h.metadataCSV(); csv != nil {
metadataCSV = append(metadataCSV, csv)
}
}
})
rule := android.NewRuleBuilder()
outputPath := hiddenAPISingletonPaths(ctx).metadata
rule.Command().
Tool(android.PathForSource(ctx, "frameworks/base/tools/hiddenapi/merge_csv.py")).
Inputs(metadataCSV).
Text(">").
Output(outputPath)
rule.Build(pctx, ctx, "hiddenAPIGreylistMetadataFile", "hiddenapi greylist metadata")
return outputPath
}
// commitChangeForRestat adds a command to a rule that updates outputPath from tempPath if they are different. It
// also marks the rule as restat and marks the tempPath as a temporary file that should not be considered an output of
// the rule.
func commitChangeForRestat(rule *android.RuleBuilder, tempPath, outputPath android.WritablePath) {
rule.Restat()
rule.Temporary(tempPath)
rule.Command().
Text("(").
Text("if").
Text("cmp -s").Input(tempPath).Output(outputPath).Text(";").
Text("then").
Text("rm").Input(tempPath).Text(";").
Text("else").
Text("mv").Input(tempPath).Output(outputPath).Text(";").
Text("fi").
Text(")")
}