Allow application to inspect query-ability of other package (7d0ce7f7) · Commits · e / os / android_frameworks_base

core/api/current.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -12631,6 +12631,7 @@ package android.content.pm {
		method public boolean isPackageSuspended();
		method @CheckResult public abstract boolean isPermissionRevokedByPolicy(@NonNull String, @NonNull String);
		method public abstract boolean isSafeMode();
		method public boolean mayPackageQuery(@NonNull String, @NonNull String) throws android.content.pm.PackageManager.NameNotFoundException;
		method @NonNull public java.util.List<android.content.pm.PackageManager.Property> queryActivityProperty(@NonNull String);
		method @NonNull public java.util.List<android.content.pm.PackageManager.Property> queryApplicationProperty(@NonNull String);
		method @NonNull public abstract java.util.List<android.content.pm.ResolveInfo> queryBroadcastReceivers(@NonNull android.content.Intent, int);

core/java/android/app/ApplicationPackageManager.java

+15 −0

Original line number	Diff line number	Diff line
		@@ -3575,4 +3575,19 @@ public class ApplicationPackageManager extends PackageManager {
		throw e.rethrowAsRuntimeException();
		}
		}

		@Override
		public boolean mayPackageQuery(@NonNull String sourcePackageName,
		@NonNull String targetPackageName) throws NameNotFoundException {
		Objects.requireNonNull(sourcePackageName);
		Objects.requireNonNull(targetPackageName);
		try {
		return mPM.mayPackageQuery(sourcePackageName, targetPackageName, getUserId());
		} catch (ParcelableException e) {
		e.maybeRethrow(PackageManager.NameNotFoundException.class);
		throw new RuntimeException(e);
		} catch (RemoteException re) {
		throw re.rethrowAsRuntimeException();
		}
		}
		}

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

+2 −0

Original line number	Diff line number	Diff line
		@@ -818,4 +818,6 @@ interface IPackageManager {
		ParceledListSlice queryProperty(String propertyName, int componentType);

		void setKeepUninstalledPackages(in List<String> packageList);

		boolean mayPackageQuery(String sourcePackageName, String targetPackageName, int userId);
		}

core/java/android/content/pm/PackageManager.java

+25 −0

Original line number	Diff line number	Diff line
		@@ -9329,6 +9329,31 @@ public abstract class PackageManager {
		"qeuryServiceProperty not implemented in subclass");
		}

		/**
		* Returns {@code true} if the source package is able to query for details about the
		* target package. Applications that share details about other applications should
		* use this API to determine if those details should be withheld from callers that
		* do not otherwise have visibility of them.
		* <p>
		* Note: The caller must be able to query for details about the source and target
		* package. A {@link NameNotFoundException} is thrown if it isn't.
		*
		* @param sourcePackageName The source package that would receive details about the
		* target package.
		* @param targetPackageName The target package whose details would be shared with the
		* source package.
		* @return {@code true} if the source package is able to query for details about the
		* target package.
		* @throws NameNotFoundException if either a given package can not be found on the
		* system, or if the caller is not able to query for details about the source or
		* target package.
		*/
		public boolean mayPackageQuery(@NonNull String sourcePackageName,
		@NonNull String targetPackageName) throws NameNotFoundException {
		throw new UnsupportedOperationException(
		"mayPackageQuery not implemented in subclass");
		}

		/**
		* Grants implicit visibility of the package that provides an authority to a querying UID.
		*

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

+31 −0

Original line number	Diff line number	Diff line
		@@ -23388,6 +23388,37 @@ public class PackageManagerService extends IPackageManager.Stub
		return new IntentSender(target);
		}

		@Override
		public boolean mayPackageQuery(String sourcePackageName, String targetPackageName, int userId) {
		if (!mUserManager.exists(userId)) return false;
		final int callingUid = Binder.getCallingUid();
		enforceCrossUserPermission(callingUid, userId, false /requireFullPermission/,
		false /checkShell/, "may package query");
		synchronized (mLock) {
		final PackageSetting sourceSetting = getPackageSetting(sourcePackageName);
		final PackageSetting targetSetting = getPackageSetting(targetPackageName);
		if (sourceSetting == null \|\| targetSetting == null) {
		throw new ParcelableException(new PackageManager.NameNotFoundException("Package(s) "
		+ (sourceSetting == null ? sourcePackageName + " " : "")
		+ (targetSetting == null ? targetPackageName + " " : "")
		+ "not found."));
		}
		final boolean filterSource =
		shouldFilterApplicationLocked(sourceSetting, callingUid, userId);
		final boolean filterTarget =
		shouldFilterApplicationLocked(targetSetting, callingUid, userId);
		// The caller must have visibility of the both packages
		if (filterSource \|\| filterTarget) {
		throw new ParcelableException(new PackageManager.NameNotFoundException("Package(s) "
		+ (filterSource ? sourcePackageName + " " : "")
		+ (filterTarget ? targetPackageName + " " : "")
		+ "not found."));
		}
		final int sourcePackageUid = UserHandle.getUid(userId, sourceSetting.appId);
		return !shouldFilterApplicationLocked(targetSetting, sourcePackageUid, userId);
		}
		}

		private static class TempUserState {
		public final int enabledState;
		@Nullable