Enforce zen rule limit on a package level.

This means that a single package with multiple different condition providers or configuration activities will correctly have all of their zen rules associated with the same package rather than each owner/activity having their rules counted separately.

Bug: 235823407
Test: ZenModeHelperTest
Change-Id: I35daf9a24f546ae25a78a2d841be39072cdc5641
Merged-In: I35daf9a24f546ae25a78a2d841be39072cdc5641
(cherry picked from commit f4e69394ee)

services/core/java/com/android/server/notification/ZenModeHelper.java

@@ -307,7 +307,8 @@ public class ZenModeHelper {
             int newRuleInstanceCount = getCurrentInstanceCount(automaticZenRule.getOwner())
                     + getCurrentInstanceCount(automaticZenRule.getConfigurationActivity())
                     + 1;
-            if (newRuleInstanceCount > RULE_LIMIT_PER_PACKAGE
+            int newPackageRuleCount = getPackageRuleCount(pkg) + 1;
+            if (newPackageRuleCount > RULE_LIMIT_PER_PACKAGE
                     || (ruleInstanceLimit > 0 && ruleInstanceLimit < newRuleInstanceCount)) {
                 throw new IllegalArgumentException("Rule instance limit exceeded");
             }
@@ -473,6 +474,23 @@ public class ZenModeHelper {
         return count;
     }
 
+    // Equivalent method to getCurrentInstanceCount, but for all rules associated with a specific
+    // package rather than a condition provider service or activity.
+    private int getPackageRuleCount(String pkg) {
+        if (pkg == null) {
+            return 0;
+        }
+        int count = 0;
+        synchronized (mConfig) {
+            for (ZenRule rule : mConfig.automaticRules.values()) {
+                if (pkg.equals(rule.pkg)) {
+                    count++;
+                }
+            }
+        }
+        return count;
+    }
+
     public boolean canManageAutomaticZenRule(ZenRule rule) {
         final int callingUid = Binder.getCallingUid();
         if (callingUid == 0 || callingUid == Process.SYSTEM_UID) {

services/tests/uiservicestests/src/com/android/server/notification/ZenModeHelperTest.java

@@ -1377,7 +1377,9 @@ public class ZenModeHelperTest extends UiServiceTestCase {
                     ZenModeConfig.toScheduleConditionId(si),
                     new ZenPolicy.Builder().build(),
                     NotificationManager.INTERRUPTION_FILTER_PRIORITY, true);
-            String id = mZenModeHelperSpy.addAutomaticZenRule("android", zenRule, "test");
+            // We need the package name to be something that's not "android" so there aren't any
+            // existing rules under that package.
+            String id = mZenModeHelperSpy.addAutomaticZenRule("pkgname", zenRule, "test");
             assertNotNull(id);
         }
         try {
@@ -1394,6 +1396,36 @@ public class ZenModeHelperTest extends UiServiceTestCase {
         }
     }
 
+    @Test
+    public void testAddAutomaticZenRule_beyondSystemLimit_differentComponents() {
+        // Make sure the system limit is enforced per-package even with different component provider
+        // names.
+        for (int i = 0; i < RULE_LIMIT_PER_PACKAGE; i++) {
+            ScheduleInfo si = new ScheduleInfo();
+            si.startHour = i;
+            AutomaticZenRule zenRule = new AutomaticZenRule("name" + i,
+                    null,
+                    new ComponentName("android", "ScheduleConditionProvider" + i),
+                    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",
+                    null,
+                    new ComponentName("android", "ScheduleConditionProviderFinal"),
+                    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
+        }
+    }
+
     private void setupZenConfig() {
         mZenModeHelperSpy.mZenMode = Settings.Global.ZEN_MODE_IMPORTANT_INTERRUPTIONS;
         mZenModeHelperSpy.mConfig.allowAlarms = false;