Clean up CarrierPrivilegesTracker. am: 817bb6118c (9723056c) · Commits · e / os / android_frameworks_opt_telephony

src/java/com/android/internal/telephony/CarrierPrivilegesTracker.java

+35 −34

Original line number	Diff line number	Diff line
		@@ -126,6 +126,8 @@ public class CarrierPrivilegesTracker extends Handler {
		private final UserManager mUserManager;
		private final TelephonyManager mTelephonyManager;
		private final RegistrantList mRegistrantList;

		// Stores certificate hashes for Carrier Config-loaded certs. Certs must be UPPERCASE.
		private final Set<String> mCarrierConfigCerts;

		// TODO(b/151981841): Use Set<UiccAccessRule> to also check for package names loaded from SIM
		@@ -136,6 +138,8 @@ public class CarrierPrivilegesTracker extends Handler {

		// Map of PackageName -> UIDs for that Package
		private final Map<String, Set<Integer>> mCachedUids;

		// Privileged UIDs must be kept in sorted order for update-checks.
		protected int[] mPrivilegedUids;

		private final BroadcastReceiver mIntentReceiver =
		@@ -236,7 +240,9 @@ public class CarrierPrivilegesTracker extends Handler {
		break;
		}
		case ACTION_CARRIER_CONFIG_CERTS_UPDATED: {
		handleCarrierConfigUpdated(msg.arg1, msg.arg2);
		int subId = msg.arg1;
		int slotIndex = msg.arg2;
		handleCarrierConfigUpdated(subId, slotIndex);
		break;
		}
		case ACTION_SIM_STATE_UPDATED: {
		@@ -280,6 +286,7 @@ public class CarrierPrivilegesTracker extends Handler {

		// Carrier Config broadcasts with INVALID_SUBSCRIPTION_ID when the SIM is removed. This is
		// an expected event. When this happens, clear the certificates from the previous configs.
		// The certs will be cleared in maybeUpdateCertsAndNotifyRegistrants() below.
		if (subId != SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
		updatedCarrierConfigCerts = getCarrierConfigCerts(subId);
		}
		@@ -344,12 +351,7 @@ public class CarrierPrivilegesTracker extends Handler {
		}

		updateCertsForPackage(pkg);
		try {
		mCachedUids.put(pkg.packageName, getUidsForPackage(pkg.packageName));
		} catch (NameNotFoundException exception) {
		// Didn't find package. Continue looking at other packages
		Log.e(TAG, "Unable to find uid for package: " + pkg.packageName);
		}

		maybeUpdatePrivilegedUidsAndNotifyRegistrants();
		}
		@@ -403,35 +405,30 @@ public class CarrierPrivilegesTracker extends Handler {

		private void maybeUpdateCertsAndNotifyRegistrants(
		Set<String> currentCerts, Set<String> updatedCerts) {
		if (!currentCerts.equals(updatedCerts)) {
		if (currentCerts.equals(updatedCerts)) return;

		currentCerts.clear();
		currentCerts.addAll(updatedCerts);

		maybeUpdatePrivilegedUidsAndNotifyRegistrants();
		}
		}

		private void maybeUpdatePrivilegedUidsAndNotifyRegistrants() {
		int[] currentPrivilegedUids = getCurrentPrivilegedUids();
		int[] currentPrivilegedUids = getCurrentPrivilegedUidsForAllUsers();

		// Sort UIDs for the equality check
		Arrays.sort(currentPrivilegedUids);
		if (!Arrays.equals(mPrivilegedUids, currentPrivilegedUids)) {
		if (Arrays.equals(mPrivilegedUids, currentPrivilegedUids)) return;

		mPrivilegedUids = currentPrivilegedUids;
		mRegistrantList.notifyResult(mPrivilegedUids);
		}
		}

		private int[] getCurrentPrivilegedUids() {
		private int[] getCurrentPrivilegedUidsForAllUsers() {
		Set<Integer> privilegedUids = new ArraySet<>();
		for (Map.Entry<String, Set<String>> e : mInstalledPackageCerts.entrySet()) {
		if (isPackagePrivileged(e.getValue())) {
		try {
		privilegedUids.addAll(getUidsForPackage(e.getKey()));
		} catch (NameNotFoundException exception) {
		// Didn't find package. Continue looking at other packages
		Log.e(TAG, "Unable to find uid for package: " + e.getKey());
		}
		}
		}

		@@ -442,16 +439,16 @@ public class CarrierPrivilegesTracker extends Handler {
		return result.toArray();
		}

		/**
		* Returns true iff there is an overlap between the provided certificate hashes and the
		* certificate hashes stored in mCarrierConfigCerts and mUiccCerts.
		*/
		private boolean isPackagePrivileged(Set<String> certs) {
		for (String cert : certs) {
		if (mCarrierConfigCerts.contains(cert) \|\| mUiccCerts.contains(cert)) {
		return true;
		}
		}
		return false;
		return !Collections.disjoint(mCarrierConfigCerts, certs)
		\|\| !Collections.disjoint(mUiccCerts, certs);
		}

		private Set<Integer> getUidsForPackage(String pkgName) throws NameNotFoundException {
		private Set<Integer> getUidsForPackage(String pkgName) {
		if (mCachedUids.containsKey(pkgName)) {
		return mCachedUids.get(pkgName);
		}
		@@ -459,9 +456,13 @@ public class CarrierPrivilegesTracker extends Handler {
		Set<Integer> uids = new ArraySet<>();
		List<UserInfo> users = mUserManager.getUsers();
		for (UserInfo user : users) {
		uids.add(
		mPackageManager.getPackageUidAsUser(
		pkgName, user.getUserHandle().getIdentifier()));
		int userId = user.getUserHandle().getIdentifier();
		try {
		uids.add(mPackageManager.getPackageUidAsUser(pkgName, userId));
		} catch (NameNotFoundException exception) {
		// Didn't find package. Continue looking at other packages
		Log.e(TAG, "Unable to find uid for package " + pkgName + " and user " + userId);
		}
		}
		mCachedUids.put(pkgName, uids);
		return uids;