Check rule package name in ZenModeHelper.addAutomaticRule
instead of checking that of the configuration activity, which is potentially spoofable. The package name is verified to be the same app as the caller by NMS.
This change removes isSystemRule (called only once) in favor of checking the provided package name directly.
Bug: 242537431
Test: ZenModeHelperTest, manual by verifying via provided exploit apk
Change-Id: Ic7f350618c26a613df455a4128c9195f4b424a4d
Merged-In: Ic7f350618c26a613df455a4128c9195f4b424a4d
diff --git a/services/core/java/com/android/server/notification/ZenModeHelper.java b/services/core/java/com/android/server/notification/ZenModeHelper.java
index 5e62496..9fd4801 100644
--- a/services/core/java/com/android/server/notification/ZenModeHelper.java
+++ b/services/core/java/com/android/server/notification/ZenModeHelper.java
@@ -310,7 +310,7 @@
public String addAutomaticZenRule(String pkg, AutomaticZenRule automaticZenRule,
String reason) {
- if (!isSystemRule(automaticZenRule)) {
+ if (!ZenModeConfig.SYSTEM_AUTHORITY.equals(pkg)) {
PackageItemInfo component = getServiceInfo(automaticZenRule.getOwner());
if (component == null) {
component = getActivityInfo(automaticZenRule.getConfigurationActivity());
@@ -566,11 +566,6 @@
}
}
- private boolean isSystemRule(AutomaticZenRule rule) {
- return rule.getOwner() != null
- && ZenModeConfig.SYSTEM_AUTHORITY.equals(rule.getOwner().getPackageName());
- }
-
private ServiceInfo getServiceInfo(ComponentName owner) {
Intent queryIntent = new Intent();
queryIntent.setComponent(owner);
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/ZenModeHelperTest.java b/services/tests/uiservicestests/src/com/android/server/notification/ZenModeHelperTest.java
index c0fb39c4..5c2730f 100644
--- a/services/tests/uiservicestests/src/com/android/server/notification/ZenModeHelperTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/ZenModeHelperTest.java
@@ -1668,6 +1668,36 @@
}
@Test
+ public void testAddAutomaticZenRule_claimedSystemOwner() {
+ // Make sure anything that claims to have a "system" owner but not actually part of the
+ // system package still gets limited on number of rules
+ for (int i = 0; i < RULE_LIMIT_PER_PACKAGE; i++) {
+ ScheduleInfo si = new ScheduleInfo();
+ si.startHour = i;
+ AutomaticZenRule zenRule = new AutomaticZenRule("name" + i,
+ new ComponentName("android", "ScheduleConditionProvider" + i),
+ null, // configuration activity
+ ZenModeConfig.toScheduleConditionId(si),
+ new ZenPolicy.Builder().build(),
+ NotificationManager.INTERRUPTION_FILTER_PRIORITY, true);
+ String id = mZenModeHelperSpy.addAutomaticZenRule("pkgname", zenRule, "test");
+ assertNotNull(id);
+ }
+ try {
+ AutomaticZenRule zenRule = new AutomaticZenRule("name",
+ new ComponentName("android", "ScheduleConditionProviderFinal"),
+ null, // configuration activity
+ ZenModeConfig.toScheduleConditionId(new ScheduleInfo()),
+ new ZenPolicy.Builder().build(),
+ NotificationManager.INTERRUPTION_FILTER_PRIORITY, true);
+ String id = mZenModeHelperSpy.addAutomaticZenRule("pkgname", zenRule, "test");
+ fail("allowed too many rules to be created");
+ } catch (IllegalArgumentException e) {
+ // yay
+ }
+ }
+
+ @Test
public void testAddAutomaticZenRule_CA() {
AutomaticZenRule zenRule = new AutomaticZenRule("name",
null,
