Apply static RRO when parsing Android manifest of a target package (30dc2a08) · Commits · e / os / android_frameworks_base

core/java/android/content/pm/PackageParser.java

+35 −3

Original line number	Diff line number	Diff line
		@@ -547,6 +547,8 @@ public class PackageParser {
		*/
		public interface Callback {
		boolean hasFeature(String feature);
		String[] getOverlayPaths(String targetPackageName, String targetPath);
		String[] getOverlayApks(String targetPackageName);
		}

		/**
		@@ -563,6 +565,14 @@ public class PackageParser {
		@Override public boolean hasFeature(String feature) {
		return mPm.hasSystemFeature(feature);
		}

		@Override public String[] getOverlayPaths(String targetPackageName, String targetPath) {
		return null;
		}

		@Override public String[] getOverlayApks(String targetPackageName) {
		return null;
		}
		}

		/**
		@@ -1054,7 +1064,19 @@ public class PackageParser {

		try {
		final byte[] bytes = IoUtils.readFileAsByteArray(cacheFile.getAbsolutePath());
		return fromCacheEntry(bytes);
		Package p = fromCacheEntry(bytes);
		if (mCallback != null) {
		String[] overlayApks = mCallback.getOverlayApks(p.packageName);
		if (overlayApks != null && overlayApks.length > 0) {
		for (String overlayApk : overlayApks) {
		// If a static RRO is updated, return null.
		if (!isCacheUpToDate(new File(overlayApk), cacheFile)) {
		return null;
		}
		}
		}
		}
		return p;
		} catch (Exception e) {
		Slog.w(TAG, "Error reading package cache: ", e);

		@@ -1238,7 +1260,7 @@ public class PackageParser {
		parser = assets.openXmlResourceParser(cookie, ANDROID_MANIFEST_FILENAME);

		final String[] outError = new String[1];
		final Package pkg = parseBaseApk(res, parser, flags, outError);
		final Package pkg = parseBaseApk(apkPath, res, parser, flags, outError);
		if (pkg == null) {
		throw new PackageParserException(mParseError,
		apkPath + " (at " + parser.getPositionDescription() + "): " + outError[0]);
		@@ -1938,6 +1960,7 @@ public class PackageParser {
		* need to consider whether they should be supported by split APKs and child
		* packages.
		*
		* @param apkPath The package apk file path
		* @param res The resources from which to resolve values
		* @param parser The manifest parser
		* @param flags Flags how to parse
		@@ -1947,7 +1970,7 @@ public class PackageParser {
		* @throws XmlPullParserException
		* @throws IOException
		*/
		private Package parseBaseApk(Resources res, XmlResourceParser parser, int flags,
		private Package parseBaseApk(String apkPath, Resources res, XmlResourceParser parser, int flags,
		String[] outError) throws XmlPullParserException, IOException {
		final String splitName;
		final String pkgName;
		@@ -1967,6 +1990,15 @@ public class PackageParser {
		return null;
		}

		if (mCallback != null) {
		String[] overlayPaths = mCallback.getOverlayPaths(pkgName, apkPath);
		if (overlayPaths != null && overlayPaths.length > 0) {
		for (String overlayPath : overlayPaths) {
		res.getAssets().addOverlayPath(overlayPath);
		}
		}
		}

		final Package pkg = new Package(pkgName);

		TypedArray sa = res.obtainAttributes(parser,

services/core/java/com/android/server/pm/PackageManagerService.java

+117 −3

Original line number	Diff line number	Diff line
		@@ -739,11 +739,122 @@ public class PackageManagerService extends IPackageManager.Stub
		@GuardedBy("mPackages")
		final SparseArray<Map<String, Integer>> mChangedPackagesSequenceNumbers = new SparseArray<>();

		final PackageParser.Callback mPackageParserCallback = new PackageParser.Callback() {
		@Override public boolean hasFeature(String feature) {
		class PackageParserCallback implements PackageParser.Callback {
		@Override public final boolean hasFeature(String feature) {
		return PackageManagerService.this.hasSystemFeature(feature, 0);
		}

		final List<PackageParser.Package> getStaticOverlayPackagesLocked(
		Collection<PackageParser.Package> allPackages, String targetPackageName) {
		List<PackageParser.Package> overlayPackages = null;
		for (PackageParser.Package p : allPackages) {
		if (targetPackageName.equals(p.mOverlayTarget) && p.mIsStaticOverlay) {
		if (overlayPackages == null) {
		overlayPackages = new ArrayList<PackageParser.Package>();
		}
		overlayPackages.add(p);
		}
		}
		if (overlayPackages != null) {
		Comparator<PackageParser.Package> cmp = new Comparator<PackageParser.Package>() {
		public int compare(PackageParser.Package p1, PackageParser.Package p2) {
		return p1.mOverlayPriority - p2.mOverlayPriority;
		}
		};
		Collections.sort(overlayPackages, cmp);
		}
		return overlayPackages;
		}

		final String[] getStaticOverlayPathsLocked(Collection<PackageParser.Package> allPackages,
		String targetPackageName, String targetPath) {
		if ("android".equals(targetPackageName)) {
		// Static RROs targeting to "android", ie framework-res.apk, are already applied by
		// native AssetManager.
		return null;
		}
		List<PackageParser.Package> overlayPackages =
		getStaticOverlayPackagesLocked(allPackages, targetPackageName);
		if (overlayPackages == null \|\| overlayPackages.isEmpty()) {
		return null;
		}
		List<String> overlayPathList = null;
		for (PackageParser.Package overlayPackage : overlayPackages) {
		if (targetPath == null) {
		if (overlayPathList == null) {
		overlayPathList = new ArrayList<String>();
		}
		overlayPathList.add(overlayPackage.baseCodePath);
		continue;
		}

		try {
		// Creates idmaps for system to parse correctly the Android manifest of the
		// target package.
		//
		// OverlayManagerService will update each of them with a correct gid from its
		// target package app id.
		mInstaller.idmap(targetPath, overlayPackage.baseCodePath,
		UserHandle.getSharedAppGid(
		UserHandle.getUserGid(UserHandle.USER_SYSTEM)));
		if (overlayPathList == null) {
		overlayPathList = new ArrayList<String>();
		}
		overlayPathList.add(overlayPackage.baseCodePath);
		} catch (InstallerException e) {
		Slog.e(TAG, "Failed to generate idmap for " + targetPath + " and " +
		overlayPackage.baseCodePath);
		}
		}
		return overlayPathList == null ? null : overlayPathList.toArray(new String[0]);
		}

		String[] getStaticOverlayPaths(String targetPackageName, String targetPath) {
		synchronized (mPackages) {
		return getStaticOverlayPathsLocked(
		mPackages.values(), targetPackageName, targetPath);
		}
		}

		@Override public final String[] getOverlayApks(String targetPackageName) {
		return getStaticOverlayPaths(targetPackageName, null);
		}

		@Override public final String[] getOverlayPaths(String targetPackageName,
		String targetPath) {
		return getStaticOverlayPaths(targetPackageName, targetPath);
		}
		};

		class ParallelPackageParserCallback extends PackageParserCallback {
		List<PackageParser.Package> mOverlayPackages = null;

		void findStaticOverlayPackages() {
		synchronized (mPackages) {
		for (PackageParser.Package p : mPackages.values()) {
		if (p.mIsStaticOverlay) {
		if (mOverlayPackages == null) {
		mOverlayPackages = new ArrayList<PackageParser.Package>();
		}
		mOverlayPackages.add(p);
		}
		}
		}
		}

		@Override
		synchronized String[] getStaticOverlayPaths(String targetPackageName, String targetPath) {
		// We can trust mOverlayPackages without holding mPackages because package uninstall
		// can't happen while running parallel parsing.
		// Moreover holding mPackages on each parsing thread causes dead-lock.
		return mOverlayPackages == null ? null :
		getStaticOverlayPathsLocked(mOverlayPackages, targetPackageName, targetPath);
		}
		}

		final PackageParser.Callback mPackageParserCallback = new PackageParserCallback();
		final ParallelPackageParserCallback mParallelPackageParserCallback =
		new ParallelPackageParserCallback();

		public static final class SharedLibraryEntry {
		public final String path;
		@@ -2453,6 +2564,8 @@ public class PackageManagerService extends IPackageManager.Stub
		\| PackageParser.PARSE_IS_SYSTEM_DIR
		\| PackageParser.PARSE_TRUSTED_OVERLAY, scanFlags \| SCAN_TRUSTED_OVERLAY, 0);

		mParallelPackageParserCallback.findStaticOverlayPackages();

		// Find base frameworks (resource packages without code).
		scanDirTracedLI(frameworkDir, mDefParseFlags
		\| PackageParser.PARSE_IS_SYSTEM
		@@ -7856,7 +7969,8 @@ public class PackageManagerService extends IPackageManager.Stub
		+ " flags=0x" + Integer.toHexString(parseFlags));
		}
		ParallelPackageParser parallelPackageParser = new ParallelPackageParser(
		mSeparateProcesses, mOnlyCore, mMetrics, mCacheDir, mPackageParserCallback);
		mSeparateProcesses, mOnlyCore, mMetrics, mCacheDir,
		mParallelPackageParserCallback);

		// Submit files for parsing in parallel
		int fileCount = 0;