Back up / restore default app and intent filter verification state (6038d15c) · Commits · e / os / android_frameworks_base

core/java/android/content/pm/IPackageManager.aidl

+4 −0

Original line number	Diff line number	Diff line
		@@ -282,6 +282,10 @@ interface IPackageManager {
		*/
		byte[] getPreferredActivityBackup(int userId);
		void restorePreferredActivities(in byte[] backup, int userId);
		byte[] getDefaultAppsBackup(int userId);
		void restoreDefaultApps(in byte[] backup, int userId);
		byte[] getIntentFilterVerificationBackup(int userId);
		void restoreIntentFilterVerification(in byte[] backup, int userId);

		/**
		* Report the set of 'Home' activity candidates, plus (if any) which of them

core/java/com/android/server/backup/PreferredActivityBackupHelper.java

+46 −25

Original line number	Diff line number	Diff line
		@@ -27,48 +27,69 @@ public class PreferredActivityBackupHelper extends BlobBackupHelper {
		private static final boolean DEBUG = false;

		// current schema of the backup state blob
		private static final int STATE_VERSION = 2;
		private static final int STATE_VERSION = 3;

		// key under which the preferred-activity state blob is committed to backup
		private static final String KEY_PREFERRED = "preferred-activity";

		// key for default-browser [etc] state
		private static final String KEY_DEFAULT_APPS = "default-apps";

		// intent-filter verification state
		private static final String KEY_INTENT_VERIFICATION = "intent-verification";

		public PreferredActivityBackupHelper() {
		super(STATE_VERSION, KEY_PREFERRED);
		super(STATE_VERSION,
		KEY_PREFERRED,
		KEY_DEFAULT_APPS,
		KEY_INTENT_VERIFICATION);
		}

		@Override
		protected byte[] getBackupPayload(String key) {
		if (KEY_PREFERRED.equals(key)) {
		IPackageManager pm = AppGlobals.getPackageManager();
		if (DEBUG) {
		Slog.v(TAG, "Checking whether to back up");
		Slog.d(TAG, "Handling backup of " + key);
		}
		IPackageManager pm = AppGlobals.getPackageManager();
		try {
		switch (key) {
		case KEY_PREFERRED:
		return pm.getPreferredActivityBackup(UserHandle.USER_OWNER);
		} catch (Exception e) {
		Slog.e(TAG, "Unable to store backup payload", e);
		// fall through to report null state
		}
		} else {
		case KEY_DEFAULT_APPS:
		return pm.getDefaultAppsBackup(UserHandle.USER_OWNER);
		case KEY_INTENT_VERIFICATION:
		return pm.getIntentFilterVerificationBackup(UserHandle.USER_OWNER);
		default:
		Slog.w(TAG, "Unexpected backup key " + key);
		}
		} catch (Exception e) {
		Slog.e(TAG, "Unable to store payload " + key);
		}
		return null;
		}

		@Override
		protected void applyRestoredPayload(String key, byte[] payload) {
		if (KEY_PREFERRED.equals(key)) {
		IPackageManager pm = AppGlobals.getPackageManager();
		if (DEBUG) {
		Slog.v(TAG, "Restoring");
		Slog.d(TAG, "Handling restore of " + key);
		}
		IPackageManager pm = AppGlobals.getPackageManager();
		try {
		switch (key) {
		case KEY_PREFERRED:
		pm.restorePreferredActivities(payload, UserHandle.USER_OWNER);
		} catch (Exception e) {
		Slog.e(TAG, "Unable to restore", e);
		}
		} else {
		break;
		case KEY_DEFAULT_APPS:
		pm.restoreDefaultApps(payload, UserHandle.USER_OWNER);
		break;
		case KEY_INTENT_VERIFICATION:
		pm.restoreIntentFilterVerification(payload, UserHandle.USER_OWNER);
		break;
		default:
		Slog.w(TAG, "Unexpected restore key " + key);
		}
		} catch (Exception e) {
		Slog.w(TAG, "Unable to restore key " + key);
		}
		}
		}

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

+2 −2

Original line number	Diff line number	Diff line
		@@ -19,7 +19,7 @@ package com.android.server.pm;
		import android.content.pm.PackageManager;
		import android.content.pm.PackageParser;
		import android.util.ArraySet;
		import android.util.Log;
		import android.util.Slog;

		import java.util.ArrayList;

		@@ -113,7 +113,7 @@ public class IntentFilterVerificationState {
		setState(state);
		return true;
		}
		Log.d(TAG, "Cannot set verifier response with callerUid:" + callerUid + " and code:" +
		Slog.d(TAG, "Cannot set verifier response with callerUid:" + callerUid + " and code:" +
		code + " as required verifierUid is:" + mRequiredVerifierUid);
		return false;
		}

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

+216 −48

Original line number	Diff line number	Diff line
		@@ -212,6 +212,7 @@ import com.android.server.pm.PermissionsState.PermissionState;
		import com.android.server.storage.DeviceStorageMonitorInternal;

		import org.xmlpull.v1.XmlPullParser;
		import org.xmlpull.v1.XmlPullParserException;
		import org.xmlpull.v1.XmlSerializer;

		import java.io.BufferedInputStream;
		@@ -551,6 +552,22 @@ public class PackageManagerService extends IPackageManager.Stub {
		final SparseArray<IntentFilterVerificationState> mIntentFilterVerificationStates
		= new SparseArray<IntentFilterVerificationState>();

		private static class IFVerificationParams {
		PackageParser.Package pkg;
		boolean replacing;
		int userId;
		int verifierUid;

		public IFVerificationParams(PackageParser.Package _pkg, boolean _replacing,
		int _userId, int _verifierUid) {
		pkg = _pkg;
		replacing = _replacing;
		userId = _userId;
		replacing = _replacing;
		verifierUid = _verifierUid;
		}
		}

		private interface IntentFilterVerifier<T extends IntentFilter> {
		boolean addOneIntentFilterVerification(int verifierId, int userId, int verificationId,
		T filter, String packageName);
		@@ -624,7 +641,7 @@ public class PackageManagerService extends IPackageManager.Stub {
		UserHandle user = new UserHandle(userId);
		mContext.sendBroadcastAsUser(verificationIntent, user);
		if (DEBUG_DOMAIN_VERIFICATION) Slog.d(TAG,
		"Sending IntenFilter verification broadcast");
		"Sending IntentFilter verification broadcast");
		}

		public void receiveVerificationResponse(int verificationId) {
		@@ -634,6 +651,10 @@ public class PackageManagerService extends IPackageManager.Stub {

		ArrayList<PackageParser.ActivityIntentInfo> filters = ivs.getFilters();
		final int count = filters.size();
		if (DEBUG_DOMAIN_VERIFICATION) {
		Slog.i(TAG, "Received verification response " + verificationId
		+ " for " + count + " filters, verified=" + verified);
		}
		for (int n=0; n<count; n++) {
		PackageParser.ActivityIntentInfo filter = filters.get(n);
		filter.setVerified(verified);
		@@ -708,30 +729,27 @@ public class PackageManagerService extends IPackageManager.Stub {
		}

		@Override
		public boolean addOneIntentFilterVerification(int verifierId, int userId, int verificationId,
		public boolean addOneIntentFilterVerification(int verifierUid, int userId, int verificationId,
		ActivityIntentInfo filter, String packageName) {
		if (!(filter.hasDataScheme(IntentFilter.SCHEME_HTTP) \|\|
		filter.hasDataScheme(IntentFilter.SCHEME_HTTPS))) {
		if (DEBUG_DOMAIN_VERIFICATION) Slog.d(TAG,
		"IntentFilter does not contain HTTP nor HTTPS data scheme");
		if (!hasValidDomains(filter)) {
		return false;
		}
		IntentFilterVerificationState ivs = mIntentFilterVerificationStates.get(verificationId);
		if (ivs == null) {
		ivs = createDomainVerificationState(verifierId, userId, verificationId,
		ivs = createDomainVerificationState(verifierUid, userId, verificationId,
		packageName);
		}
		if (!hasValidDomains(filter)) {
		return false;
		if (DEBUG_DOMAIN_VERIFICATION) {
		Slog.d(TAG, "Adding verification filter for " + packageName + " : " + filter);
		}
		ivs.addFilter(filter);
		return true;
		}

		private IntentFilterVerificationState createDomainVerificationState(int verifierId,
		private IntentFilterVerificationState createDomainVerificationState(int verifierUid,
		int userId, int verificationId, String packageName) {
		IntentFilterVerificationState ivs = new IntentFilterVerificationState(
		verifierId, userId, packageName);
		verifierUid, userId, packageName);
		ivs.setPendingState();
		synchronized (mPackages) {
		mIntentFilterVerificationStates.append(verificationId, ivs);
		@@ -882,8 +900,10 @@ public class PackageManagerService extends IPackageManager.Stub {
		final SparseArray<PostInstallData> mRunningInstalls = new SparseArray<PostInstallData>();
		int mNextInstallToken = 1; // nonzero; will be wrapped back to 1 when ++ overflows

		// backup/restore of preferred activity state
		// XML tags for backup/restore of various bits of state
		private static final String TAG_PREFERRED_BACKUP = "pa";
		private static final String TAG_DEFAULT_APPS = "da";
		private static final String TAG_INTENT_FILTER_VERIFICATION = "iv";

		private final String mRequiredVerifierPackage;

		@@ -1496,11 +1516,9 @@ public class PackageManagerService extends IPackageManager.Stub {
		break;
		}
		case START_INTENT_FILTER_VERIFICATIONS: {
		int userId = msg.arg1;
		int verifierUid = msg.arg2;
		PackageParser.Package pkg = (PackageParser.Package)msg.obj;

		verifyIntentFiltersIfNeeded(userId, verifierUid, pkg);
		IFVerificationParams params = (IFVerificationParams) msg.obj;
		verifyIntentFiltersIfNeeded(params.userId, params.verifierUid,
		params.replacing, params.pkg);
		break;
		}
		case INTENT_FILTER_VERIFIED: {
		@@ -2343,8 +2361,7 @@ public class PackageManagerService extends IPackageManager.Stub {
		final String packageName = getDefaultBrowserPackageName(myUserId);
		PackageInfo info = getPackageInfo(packageName, 0, myUserId);
		if (info == null) {
		Slog.w(TAG, "Clearing default Browser as its package is no more installed: " +
		packageName);
		Slog.w(TAG, "Default browser no longer installed: " + packageName);
		setDefaultBrowserPackageName(null, myUserId);
		}
		}
		@@ -11757,7 +11774,7 @@ public class PackageManagerService extends IPackageManager.Stub {
		return;
		}

		startIntentFilterVerifications(args.user.getIdentifier(), pkg);
		startIntentFilterVerifications(args.user.getIdentifier(), replace, pkg);

		if (replace) {
		replacePackageLI(pkg, parseFlags, scanFlags, args.user,
		@@ -11774,7 +11791,8 @@ public class PackageManagerService extends IPackageManager.Stub {
		}
		}

		private void startIntentFilterVerifications(int userId, PackageParser.Package pkg) {
		private void startIntentFilterVerifications(int userId, boolean replacing,
		PackageParser.Package pkg) {
		if (mIntentFilterVerifierComponent == null) {
		Slog.w(TAG, "No IntentFilter verification will not be done as "
		+ "there is no IntentFilterVerifier available!");
		@@ -11787,14 +11805,11 @@ public class PackageManagerService extends IPackageManager.Stub {

		mHandler.removeMessages(START_INTENT_FILTER_VERIFICATIONS);
		final Message msg = mHandler.obtainMessage(START_INTENT_FILTER_VERIFICATIONS);
		msg.obj = pkg;
		msg.arg1 = userId;
		msg.arg2 = verifierUid;

		msg.obj = new IFVerificationParams(pkg, replacing, userId, verifierUid);
		mHandler.sendMessage(msg);
		}

		private void verifyIntentFiltersIfNeeded(int userId, int verifierUid,
		private void verifyIntentFiltersIfNeeded(int userId, int verifierUid, boolean replacing,
		PackageParser.Package pkg) {
		int size = pkg.activities.size();
		if (size == 0) {
		@@ -11814,13 +11829,26 @@ public class PackageManagerService extends IPackageManager.Stub {
		+ " if any IntentFilter from the " + size
		+ " Activities needs verification ...");

		final int verificationId = mIntentFilterVerificationToken++;
		int count = 0;
		final String packageName = pkg.packageName;
		boolean needToVerify = false;

		synchronized (mPackages) {
		// If this is a new install and we see that we've already run verification for this
		// package, we have nothing to do: it means the state was restored from backup.
		if (!replacing) {
		IntentFilterVerificationInfo ivi =
		mSettings.getIntentFilterVerificationLPr(packageName);
		if (ivi != null) {
		if (DEBUG_DOMAIN_VERIFICATION) {
		Slog.i(TAG, "Package " + packageName+ " already verified: status="
		+ ivi.getStatusString());
		}
		return;
		}
		}

		// If any filters need to be verified, then all need to be.
		boolean needToVerify = false;
		for (PackageParser.Activity a : pkg.activities) {
		for (ActivityIntentInfo filter : a.intents) {
		if (filter.needsVerification() && needsNetworkVerificationLPr(filter)) {
		@@ -11832,7 +11860,9 @@ public class PackageManagerService extends IPackageManager.Stub {
		}
		}
		}

		if (needToVerify) {
		final int verificationId = mIntentFilterVerificationToken++;
		for (PackageParser.Activity a : pkg.activities) {
		for (ActivityIntentInfo filter : a.intents) {
		boolean needsFilterVerification = filter.hasWebDataURI();
		@@ -13275,10 +13305,46 @@ public class PackageManagerService extends IPackageManager.Stub {
		}
		}

		/**
		* Common machinery for picking apart a restored XML blob and passing
		* it to a caller-supplied functor to be applied to the running system.
		*/
		private void restoreFromXml(XmlPullParser parser, int userId,
		String expectedStartTag, BlobXmlRestorer functor)
		throws IOException, XmlPullParserException {
		int type;
		while ((type = parser.next()) != XmlPullParser.START_TAG
		&& type != XmlPullParser.END_DOCUMENT) {
		}
		if (type != XmlPullParser.START_TAG) {
		// oops didn't find a start tag?!
		if (DEBUG_BACKUP) {
		Slog.e(TAG, "Didn't find start tag during restore");
		}
		return;
		}

		// this is supposed to be TAG_PREFERRED_BACKUP
		if (!expectedStartTag.equals(parser.getName())) {
		if (DEBUG_BACKUP) {
		Slog.e(TAG, "Found unexpected tag " + parser.getName());
		}
		return;
		}

		// skip interfering stuff, then we're aligned with the backing implementation
		while ((type = parser.next()) == XmlPullParser.TEXT) { }
		functor.apply(parser, userId);
		}

		private interface BlobXmlRestorer {
		public void apply(XmlPullParser parser, int userId) throws IOException, XmlPullParserException;
		}

		/**
		* Non-Binder method, support for the backup/restore mechanism: write the
		* full set of preferred activities in its canonical XML format. Returns true
		* on success; false otherwise.
		* full set of preferred activities in its canonical XML format. Returns the
		* XML output as a byte array, or null if there is none.
		*/
		@Override
		public byte[] getPreferredActivityBackup(int userId) {
		@@ -13319,32 +13385,134 @@ public class PackageManagerService extends IPackageManager.Stub {
		try {
		final XmlPullParser parser = Xml.newPullParser();
		parser.setInput(new ByteArrayInputStream(backup), StandardCharsets.UTF_8.name());
		restoreFromXml(parser, userId, TAG_PREFERRED_BACKUP,
		new BlobXmlRestorer() {
		@Override
		public void apply(XmlPullParser parser, int userId)
		throws XmlPullParserException, IOException {
		synchronized (mPackages) {
		mSettings.readPreferredActivitiesLPw(parser, userId);
		}
		}
		} );
		} catch (Exception e) {
		if (DEBUG_BACKUP) {
		Slog.e(TAG, "Exception restoring preferred activities: " + e.getMessage());
		}
		}
		}

		int type;
		while ((type = parser.next()) != XmlPullParser.START_TAG
		&& type != XmlPullParser.END_DOCUMENT) {
		/**
		* Non-Binder method, support for the backup/restore mechanism: write the
		* default browser (etc) settings in its canonical XML format. Returns the default
		* browser XML representation as a byte array, or null if there is none.
		*/
		@Override
		public byte[] getDefaultAppsBackup(int userId) {
		if (Binder.getCallingUid() != Process.SYSTEM_UID) {
		throw new SecurityException("Only the system may call getDefaultAppsBackup()");
		}
		if (type != XmlPullParser.START_TAG) {
		// oops didn't find a start tag?!

		ByteArrayOutputStream dataStream = new ByteArrayOutputStream();
		try {
		final XmlSerializer serializer = new FastXmlSerializer();
		serializer.setOutput(dataStream, StandardCharsets.UTF_8.name());
		serializer.startDocument(null, true);
		serializer.startTag(null, TAG_DEFAULT_APPS);

		synchronized (mPackages) {
		mSettings.writeDefaultAppsLPr(serializer, userId);
		}

		serializer.endTag(null, TAG_DEFAULT_APPS);
		serializer.endDocument();
		serializer.flush();
		} catch (Exception e) {
		if (DEBUG_BACKUP) {
		Slog.e(TAG, "Didn't find start tag during restore");
		Slog.e(TAG, "Unable to write default apps for backup", e);
		}
		return;
		return null;
		}

		// this is supposed to be TAG_PREFERRED_BACKUP
		if (!TAG_PREFERRED_BACKUP.equals(parser.getName())) {
		return dataStream.toByteArray();
		}

		@Override
		public void restoreDefaultApps(byte[] backup, int userId) {
		if (Binder.getCallingUid() != Process.SYSTEM_UID) {
		throw new SecurityException("Only the system may call restoreDefaultApps()");
		}

		try {
		final XmlPullParser parser = Xml.newPullParser();
		parser.setInput(new ByteArrayInputStream(backup), StandardCharsets.UTF_8.name());
		restoreFromXml(parser, userId, TAG_DEFAULT_APPS,
		new BlobXmlRestorer() {
		@Override
		public void apply(XmlPullParser parser, int userId)
		throws XmlPullParserException, IOException {
		synchronized (mPackages) {
		mSettings.readDefaultAppsLPw(parser, userId);
		}
		}
		} );
		} catch (Exception e) {
		if (DEBUG_BACKUP) {
		Slog.e(TAG, "Found unexpected tag " + parser.getName());
		Slog.e(TAG, "Exception restoring default apps: " + e.getMessage());
		}
		}
		return;
		}

		// skip interfering stuff, then we're aligned with the backing implementation
		while ((type = parser.next()) == XmlPullParser.TEXT) { }
		@Override
		public byte[] getIntentFilterVerificationBackup(int userId) {
		if (Binder.getCallingUid() != Process.SYSTEM_UID) {
		throw new SecurityException("Only the system may call getIntentFilterVerificationBackup()");
		}

		ByteArrayOutputStream dataStream = new ByteArrayOutputStream();
		try {
		final XmlSerializer serializer = new FastXmlSerializer();
		serializer.setOutput(dataStream, StandardCharsets.UTF_8.name());
		serializer.startDocument(null, true);
		serializer.startTag(null, TAG_INTENT_FILTER_VERIFICATION);

		synchronized (mPackages) {
		mSettings.readPreferredActivitiesLPw(parser, userId);
		mSettings.writeAllDomainVerificationsLPr(serializer, userId);
		}

		serializer.endTag(null, TAG_INTENT_FILTER_VERIFICATION);
		serializer.endDocument();
		serializer.flush();
		} catch (Exception e) {
		if (DEBUG_BACKUP) {
		Slog.e(TAG, "Unable to write default apps for backup", e);
		}
		return null;
		}

		return dataStream.toByteArray();
		}

		@Override
		public void restoreIntentFilterVerification(byte[] backup, int userId) {
		if (Binder.getCallingUid() != Process.SYSTEM_UID) {
		throw new SecurityException("Only the system may call restorePreferredActivities()");
		}

		try {
		final XmlPullParser parser = Xml.newPullParser();
		parser.setInput(new ByteArrayInputStream(backup), StandardCharsets.UTF_8.name());
		restoreFromXml(parser, userId, TAG_INTENT_FILTER_VERIFICATION,
		new BlobXmlRestorer() {
		@Override
		public void apply(XmlPullParser parser, int userId)
		throws XmlPullParserException, IOException {
		synchronized (mPackages) {
		mSettings.readAllDomainVerificationsLPr(parser, userId);
		mSettings.writeLPr();
		}
		}
		} );
		} catch (Exception e) {
		if (DEBUG_BACKUP) {
		Slog.e(TAG, "Exception restoring preferred activities: " + e.getMessage());

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

+119 −4

File changed.

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