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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 (
"path/filepath"
"github.com/google/blueprint"
"android/soong/android"
"android/soong/java/config"
)
var hiddenAPIGenerateCSVRule = pctx.AndroidStaticRule("hiddenAPIGenerateCSV", blueprint.RuleParams{
Command: "${config.Class2Greylist} --stub-api-flags ${stubAPIFlags} $in $outFlag $out",
CommandDeps: []string{"${config.Class2Greylist}"},
}, "outFlag", "stubAPIFlags")
type hiddenAPI struct {
flagsCSVPath android.Path
metadataCSVPath android.Path
bootDexJarPath android.Path
}
func (h *hiddenAPI) flagsCSV() android.Path {
return h.flagsCSVPath
}
func (h *hiddenAPI) metadataCSV() android.Path {
return h.metadataCSVPath
}
func (h *hiddenAPI) bootDexJar() android.Path {
return h.bootDexJarPath
}
type hiddenAPIIntf interface {
flagsCSV() android.Path
metadataCSV() android.Path
bootDexJar() android.Path
}
var _ hiddenAPIIntf = (*hiddenAPI)(nil)
func (h *hiddenAPI) hiddenAPI(ctx android.ModuleContext, dexJar android.ModuleOutPath, implementationJar android.Path,
uncompressDex bool) android.ModuleOutPath {
if !ctx.Config().IsEnvTrue("UNSAFE_DISABLE_HIDDENAPI_FLAGS") {
isBootJar := inList(ctx.ModuleName(), ctx.Config().BootJars())
// Check to see if this module provides part of the hiddenapi, i.e. is a boot jar or a white listed
// library.
isProvidingJar := isBootJar || inList(ctx.ModuleName(), config.HiddenAPIProvidingNonBootJars)
// If this module provides part of the hiddenapi or is a special module that simply provides information
// about the hiddenapi then extract information about the hiddenapi from the UnsupportedAppUsage
// annotations compiled into the classes.jar.
if isProvidingJar || inList(ctx.ModuleName(), config.HiddenAPIExtraAppUsageJars) {
// Derive the greylist from classes jar.
flagsCSV := android.PathForModuleOut(ctx, "hiddenapi", "flags.csv")
metadataCSV := android.PathForModuleOut(ctx, "hiddenapi", "metadata.csv")
hiddenAPIGenerateCSV(ctx, flagsCSV, metadataCSV, implementationJar)
h.flagsCSVPath = flagsCSV
h.metadataCSVPath = metadataCSV
}
// If this module provides part of the hiddenapi then encode the information about the hiddenapi into
// the dex file created for this module.
if isProvidingJar {
hiddenAPIJar := android.PathForModuleOut(ctx, "hiddenapi", ctx.ModuleName()+".jar")
h.bootDexJarPath = dexJar
hiddenAPIEncodeDex(ctx, hiddenAPIJar, dexJar, uncompressDex)
dexJar = hiddenAPIJar
}
}
return dexJar
}
func hiddenAPIGenerateCSV(ctx android.ModuleContext, flagsCSV, metadataCSV android.WritablePath,
classesJar android.Path) {
stubFlagsCSV := hiddenAPISingletonPaths(ctx).stubFlags
ctx.Build(pctx, android.BuildParams{
Rule: hiddenAPIGenerateCSVRule,
Description: "hiddenapi flags",
Input: classesJar,
Output: flagsCSV,
Implicit: stubFlagsCSV,
Args: map[string]string{
"outFlag": "--write-flags-csv",
"stubAPIFlags": stubFlagsCSV.String(),
},
})
ctx.Build(pctx, android.BuildParams{
Rule: hiddenAPIGenerateCSVRule,
Description: "hiddenapi metadata",
Input: classesJar,
Output: metadataCSV,
Implicit: stubFlagsCSV,
Args: map[string]string{
"outFlag": "--write-metadata-csv",
"stubAPIFlags": stubFlagsCSV.String(),
},
})
}
var hiddenAPIEncodeDexRule = pctx.AndroidStaticRule("hiddenAPIEncodeDex", blueprint.RuleParams{
Command: `rm -rf $tmpDir && mkdir -p $tmpDir && mkdir $tmpDir/dex-input && mkdir $tmpDir/dex-output && ` +
`unzip -o -q $in 'classes*.dex' -d $tmpDir/dex-input && ` +
`for INPUT_DEX in $$(find $tmpDir/dex-input -maxdepth 1 -name 'classes*.dex' | sort); do ` +
` echo "--input-dex=$${INPUT_DEX}"; ` +
` echo "--output-dex=$tmpDir/dex-output/$$(basename $${INPUT_DEX})"; ` +
`done | xargs ${config.HiddenAPI} encode --api-flags=$flagsCsv $hiddenapiFlags && ` +
`${config.SoongZipCmd} $soongZipFlags -o $tmpDir/dex.jar -C $tmpDir/dex-output -f "$tmpDir/dex-output/classes*.dex" && ` +
`${config.MergeZipsCmd} -D -zipToNotStrip $tmpDir/dex.jar -stripFile "classes*.dex" $out $tmpDir/dex.jar $in`,
CommandDeps: []string{
"${config.HiddenAPI}",
"${config.SoongZipCmd}",
"${config.MergeZipsCmd}",
},
}, "flagsCsv", "hiddenapiFlags", "tmpDir", "soongZipFlags")
func hiddenAPIEncodeDex(ctx android.ModuleContext, output android.WritablePath, dexInput android.Path,
uncompressDex bool) {
flagsCSV := hiddenAPISingletonPaths(ctx).flags
// The encode dex rule requires unzipping and rezipping the classes.dex files, ensure that if it was uncompressed
// in the input it stays uncompressed in the output.
soongZipFlags := ""
hiddenapiFlags := ""
tmpOutput := output
tmpDir := android.PathForModuleOut(ctx, "hiddenapi", "dex")
if uncompressDex {
soongZipFlags = "-L 0"
tmpOutput = android.PathForModuleOut(ctx, "hiddenapi", "unaligned", "unaligned.jar")
tmpDir = android.PathForModuleOut(ctx, "hiddenapi", "unaligned")
}
// If frameworks/base doesn't exist we must be building with the 'master-art' manifest.
// Disable assertion that all methods/fields have hidden API flags assigned.
if !ctx.Config().FrameworksBaseDirExists(ctx) {
hiddenapiFlags = "--no-force-assign-all"
}
ctx.Build(pctx, android.BuildParams{
Rule: hiddenAPIEncodeDexRule,
Description: "hiddenapi encode dex",
Input: dexInput,
Output: tmpOutput,
Implicit: flagsCSV,
Args: map[string]string{
"flagsCsv": flagsCSV.String(),
"tmpDir": tmpDir.String(),
"soongZipFlags": soongZipFlags,
"hiddenapiFlags": hiddenapiFlags,
},
})
if uncompressDex {
TransformZipAlign(ctx, output, tmpOutput)
}
}
type hiddenAPIPath struct {
path string
}
var _ android.Path = (*hiddenAPIPath)(nil)
func (p *hiddenAPIPath) String() string { return p.path }
func (p *hiddenAPIPath) Ext() string { return filepath.Ext(p.path) }
func (p *hiddenAPIPath) Base() string { return filepath.Base(p.path) }
func (p *hiddenAPIPath) Rel() string { return p.path }
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