Adds app enumeration support for all components (0c9257b7) · Commits · e / os / android_frameworks_base

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

+36 −14

Original line number	Diff line number	Diff line
		@@ -4070,32 +4070,54 @@ public class PackageParser {
		intentInfo, outError)) {
		return false;
		}
		Intent intent = new Intent();
		if (intentInfo.countActions() != 1) {
		outError[0] = "intent tags must contain exactly one action.";

		Uri data = null;
		String dataType = null;
		String host = "";
		final int numActions = intentInfo.countActions();
		final int numSchemes = intentInfo.countDataSchemes();
		final int numTypes = intentInfo.countDataTypes();
		final int numHosts = intentInfo.getHosts().length;
		if ((numSchemes == 0 && numTypes == 0 && numActions == 0)) {
		outError[0] = "intent tags must contain either an action or data.";
		return false;
		}
		intent.setAction(intentInfo.getAction(0));
		for (int i = 0, max = intentInfo.countCategories(); i < max; i++) {
		intent.addCategory(intentInfo.getCategory(i));
		if (numActions > 1) {
		outError[0] = "intent tag may have at most one action.";
		return false;
		}
		Uri data = null;
		String dataType = null;
		if (intentInfo.countDataTypes() > 1) {
		if (numTypes > 1) {
		outError[0] = "intent tag may have at most one data type.";
		return false;
		}
		if (intentInfo.countDataSchemes() > 1) {
		if (numSchemes > 1) {
		outError[0] = "intent tag may have at most one data scheme.";
		return false;
		}
		if (intentInfo.countDataTypes() == 1) {
		data = Uri.fromParts(intentInfo.getDataType(0), "", null);
		if (numHosts > 1) {
		outError[0] = "intent tag may have at most one data host.";
		return false;
		}
		Intent intent = new Intent();
		for (int i = 0, max = intentInfo.countCategories(); i < max; i++) {
		intent.addCategory(intentInfo.getCategory(i));
		}
		if (intentInfo.countDataSchemes() == 1) {
		dataType = intentInfo.getDataScheme(0);
		if (numHosts == 1) {
		host = intentInfo.getHosts()[0];
		}
		if (numSchemes == 1) {
		data = new Uri.Builder()
		.scheme(intentInfo.getDataScheme(0))
		.authority(host)
		.build();
		}
		if (numTypes == 1) {
		dataType = intentInfo.getDataType(0);
		}
		intent.setDataAndType(data, dataType);
		if (numActions == 1) {
		intent.setAction(intentInfo.getAction(0));
		}
		owner.mQueriesIntents = ArrayUtils.add(owner.mQueriesIntents, intent);
		} else if (parser.getName().equals("package")) {
		final TypedArray sa = res.obtainAttributes(parser,

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

+86 −18

Original line number	Diff line number	Diff line
		@@ -16,13 +16,18 @@

		package com.android.server.pm;

		import static android.content.pm.PackageParser.Component;
		import static android.content.pm.PackageParser.IntentInfo;
		import static android.provider.DeviceConfig.NAMESPACE_PACKAGE_MANAGER_SERVICE;

		import android.Manifest;
		import android.annotation.Nullable;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.content.pm.PackageManager;
		import android.content.pm.PackageParser;
		import android.content.pm.ProviderInfo;
		import android.net.Uri;
		import android.os.Build;
		import android.os.Process;
		import android.os.RemoteException;
		@@ -38,6 +43,7 @@ import com.android.server.FgThread;
		import com.android.server.compat.PlatformCompat;

		import java.io.PrintWriter;
		import java.util.ArrayList;
		import java.util.Collections;
		import java.util.HashMap;
		import java.util.HashSet;
		@@ -55,13 +61,13 @@ class AppsFilter {

		// Forces filtering logic to run for debug purposes.
		// STOPSHIP (b/136675067): should be false after development is complete
		private static final boolean DEBUG_RUN_WHEN_DISABLED = true;
		private static final boolean DEBUG_RUN_WHEN_DISABLED = false;

		// Logs all filtering instead of enforcing
		private static final boolean DEBUG_ALLOW_ALL = false;

		@SuppressWarnings("ConstantExpression")
		private static final boolean DEBUG_LOGGING = false \| DEBUG_RUN_WHEN_DISABLED \| DEBUG_ALLOW_ALL;
		private static final boolean DEBUG_LOGGING = false \| DEBUG_ALLOW_ALL;

		/**
		* This contains a list of packages that are implicitly queryable because another app explicitly
		@@ -200,23 +206,43 @@ class AppsFilter {
		return false;
		}
		for (Intent intent : querying.mQueriesIntents) {
		for (PackageParser.Activity activity : potentialTarget.activities) {
		if (activity.intents != null) {
		for (PackageParser.ActivityIntentInfo filter : activity.intents) {
		if (matches(intent, filter)) {
		if (matches(intent, potentialTarget.providers, potentialTarget.activities,
		potentialTarget.services, potentialTarget.receivers)) {
		return true;
		}
		}
		return false;
		}

		private static boolean matches(Intent intent,
		ArrayList<PackageParser.Provider> providerList,
		ArrayList<? extends Component<? extends IntentInfo>>... componentLists) {
		for (int p = providerList.size() - 1; p >= 0; p--) {
		PackageParser.Provider provider = providerList.get(p);
		final ProviderInfo providerInfo = provider.info;
		final Uri data = intent.getData();
		if ("content".equalsIgnoreCase(intent.getScheme())
		&& data != null
		&& providerInfo.authority.equalsIgnoreCase(data.getAuthority())) {
		return true;
		}
		}
		return false;
		}

		/** Returns true if the given intent matches the given filter. */
		private static boolean matches(Intent intent, PackageParser.ActivityIntentInfo filter) {
		return filter.match(intent.getAction(), intent.getType(), intent.getScheme(),
		intent.getData(), intent.getCategories(), "AppsFilter") > 0;
		for (int l = componentLists.length - 1; l >= 0; l--) {
		ArrayList<? extends Component<? extends IntentInfo>> components = componentLists[l];
		for (int c = components.size() - 1; c >= 0; c--) {
		Component<? extends IntentInfo> component = components.get(c);
		ArrayList<? extends IntentInfo> intents = component.intents;
		for (int i = intents.size() - 1; i >= 0; i--) {
		IntentFilter intentFilter = intents.get(i);
		if (intentFilter.match(intent.getAction(), intent.getType(), intent.getScheme(),
		intent.getData(), intent.getCategories(), "AppsFilter") > 0) {
		return true;
		}
		}
		}
		}
		return false;
		}

		/**
		@@ -328,9 +354,15 @@ class AppsFilter {
		PackageSetting targetPkgSetting, int userId) {
		final boolean featureEnabled = mFeatureConfig.isGloballyEnabled();
		if (!featureEnabled && !DEBUG_RUN_WHEN_DISABLED) {
		if (DEBUG_LOGGING) {
		Slog.d(TAG, "filtering disabled; skipped");
		}
		return false;
		}
		if (callingUid < Process.FIRST_APPLICATION_UID) {
		if (DEBUG_LOGGING) {
		Slog.d(TAG, "filtering skipped; " + callingUid + " is system");
		}
		return false;
		}
		if (callingSetting == null) {
		@@ -376,14 +408,13 @@ class AppsFilter {
		}
		if (mFeatureConfig.packageIsEnabled(callingPkgSetting.pkg)) {
		if (DEBUG_LOGGING) {
		Slog.d(TAG, "interaction: " + callingPkgSetting.name + " -> "
		+ targetPkgSetting.name + (DEBUG_ALLOW_ALL ? " ALLOWED" : "BLOCKED"));
		log(callingPkgSetting, targetPkgSetting,
		DEBUG_ALLOW_ALL ? "ALLOWED" : "BLOCKED");
		}
		return !DEBUG_ALLOW_ALL;
		} else {
		if (DEBUG_LOGGING) {
		Slog.d(TAG, "interaction: " + callingPkgSetting.name + " -> "
		+ targetPkgSetting.name + " DISABLED");
		log(callingPkgSetting, targetPkgSetting, "DISABLED");
		}
		return false;
		}
		@@ -397,38 +428,65 @@ class AppsFilter {
		// This package isn't technically installed and won't be written to settings, so we can
		// treat it as filtered until it's available again.
		if (targetPkg == null) {
		if (DEBUG_LOGGING) {
		Slog.wtf(TAG, "shouldFilterApplication: " + "targetPkg is null");
		}
		return true;
		}
		final String targetName = targetPkg.packageName;
		if (callingPkgSetting.pkg.applicationInfo.targetSdkVersion < Build.VERSION_CODES.R) {
		if (DEBUG_LOGGING) {
		log(callingPkgSetting, targetPkgSetting, "caller pre-R");
		}
		return false;
		}
		if (isImplicitlyQueryableSystemApp(targetPkgSetting)) {
		if (DEBUG_LOGGING) {
		log(callingPkgSetting, targetPkgSetting, "implicitly queryable sys");
		}
		return false;
		}
		if (targetPkg.mForceQueryable) {
		if (DEBUG_LOGGING) {
		log(callingPkgSetting, targetPkgSetting, "manifest forceQueryable");
		}
		return false;
		}
		if (mForceQueryable.contains(targetName)) {
		if (DEBUG_LOGGING) {
		log(callingPkgSetting, targetPkgSetting, "whitelist forceQueryable");
		}
		return false;
		}
		if (mQueriesViaPackage.containsKey(callingName)
		&& mQueriesViaPackage.get(callingName).contains(
		targetName)) {
		// the calling package has explicitly declared the target package; allow
		if (DEBUG_LOGGING) {
		log(callingPkgSetting, targetPkgSetting, "queries package");
		}
		return false;
		} else if (mQueriesViaIntent.containsKey(callingName)
		&& mQueriesViaIntent.get(callingName).contains(targetName)) {
		if (DEBUG_LOGGING) {
		log(callingPkgSetting, targetPkgSetting, "queries intent");
		}
		return false;
		}
		if (mImplicitlyQueryable.get(userId) != null
		&& mImplicitlyQueryable.get(userId).containsKey(callingName)
		&& mImplicitlyQueryable.get(userId).get(callingName).contains(targetName)) {
		if (DEBUG_LOGGING) {
		log(callingPkgSetting, targetPkgSetting, "implicitly queryable for user");
		}
		return false;
		}
		if (callingPkgSetting.pkg.instrumentation.size() > 0) {
		for (int i = 0, max = callingPkgSetting.pkg.instrumentation.size(); i < max; i++) {
		if (callingPkgSetting.pkg.instrumentation.get(i).info.targetPackage == targetName) {
		if (DEBUG_LOGGING) {
		log(callingPkgSetting, targetPkgSetting, "instrumentation");
		}
		return false;
		}
		}
		@@ -437,6 +495,9 @@ class AppsFilter {
		if (mPermissionManager.checkPermission(
		Manifest.permission.QUERY_ALL_PACKAGES, callingName, userId)
		== PackageManager.PERMISSION_GRANTED) {
		if (DEBUG_LOGGING) {
		log(callingPkgSetting, targetPkgSetting, "permission");
		}
		return false;
		}
		} catch (RemoteException e) {
		@@ -445,6 +506,13 @@ class AppsFilter {
		return true;
		}

		private static void log(PackageSetting callingPkgSetting, PackageSetting targetPkgSetting,
		String description) {
		Slog.wtf(TAG,
		"interaction: " + callingPkgSetting.name + " -> " + targetPkgSetting.name + " "
		+ description);
		}

		private boolean isImplicitlyQueryableSystemApp(PackageSetting targetPkgSetting) {
		return targetPkgSetting.isSystem() && (mSystemAppsQueryable
		\|\| mForceQueryableByDevice.contains(targetPkgSetting.pkg.packageName));