1 files changed, 144 insertions, 0 deletions
diff --git a/src/com/android/packageinstaller/permission/utils/EventLogger.java b/src/com/android/packageinstaller/permission/utils/EventLogger.java
new file mode 100644
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+++ b/src/com/android/packageinstaller/permission/utils/EventLogger.java
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+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.packageinstaller.permission.utils;
+
+import android.Manifest;
+import android.app.AppOpsManager;
+import android.content.Context;
+import android.os.SystemProperties;
+import android.support.annotation.NonNull;
+import android.util.Log;
+
+import com.android.internal.logging.MetricsLogger;
+import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * For each permission there are four events. The events are in the order of
+ * #ALL_DANGEROUS_PERMISSIONS. The four events per permission are (in that order): "requested",
+ * "granted", "denied", and "revoked".
+ */
+public class EventLogger {
+    private static final String LOG_TAG = EventLogger.class.getSimpleName();
+
+    /** All dangerous permission names in the same order as the events in MetricsEvent */
+    private static final List<String> ALL_DANGEROUS_PERMISSIONS = Arrays.asList(
+            Manifest.permission.READ_CALENDAR,
+            Manifest.permission.WRITE_CALENDAR,
+            Manifest.permission.CAMERA,
+            Manifest.permission.READ_CONTACTS,
+            Manifest.permission.WRITE_CONTACTS,
+            Manifest.permission.GET_ACCOUNTS,
+            Manifest.permission.ACCESS_FINE_LOCATION,
+            Manifest.permission.ACCESS_COARSE_LOCATION,
+            Manifest.permission.RECORD_AUDIO,
+            Manifest.permission.READ_PHONE_STATE,
+            Manifest.permission.CALL_PHONE,
+            Manifest.permission.READ_CALL_LOG,
+            Manifest.permission.WRITE_CALL_LOG,
+            Manifest.permission.ADD_VOICEMAIL,
+            Manifest.permission.USE_SIP,
+            Manifest.permission.PROCESS_OUTGOING_CALLS,
+            Manifest.permission.READ_CELL_BROADCASTS,
+            Manifest.permission.BODY_SENSORS,
+            Manifest.permission.SEND_SMS,
+            Manifest.permission.RECEIVE_SMS,
+            Manifest.permission.READ_SMS,
+            Manifest.permission.RECEIVE_WAP_PUSH,
+            Manifest.permission.RECEIVE_MMS,
+            Manifest.permission.READ_EXTERNAL_STORAGE,
+            Manifest.permission.WRITE_EXTERNAL_STORAGE,
+            Manifest.permission.READ_PHONE_NUMBERS,
+            Manifest.permission.ANSWER_PHONE_CALLS);
+
+    private static final List<String> ALL_APPOP_PERMISSIONS = Arrays.asList(
+            Manifest.permission.ACCESS_NOTIFICATIONS,
+            Manifest.permission.SYSTEM_ALERT_WINDOW,
+            Manifest.permission.WRITE_SETTINGS,
+            Manifest.permission.REQUEST_INSTALL_PACKAGES);
+
+    /**
+     * Get the first event id for the permission.
+     *
+     * <p>There are four events for each permission: <ul>
+     *     <li>Request permission: first id + 0</li>
+     *     <li>Grant permission: first id + 1</li>
+     *     <li>Request for permission denied: first id + 2</li>
+     *     <li>Revoke permission: first id + 3</li>
+     * </ul></p>
+     *
+     * @param name name of the permission
+     *
+     * @return The first event id for the permission
+     */
+    private static int getBaseEventId(@NonNull String name) {
+        int permIndex = ALL_DANGEROUS_PERMISSIONS.indexOf(name);
+
+        if (permIndex != -1) {
+            return MetricsEvent.ACTION_PERMISSION_REQUEST_READ_CALENDAR + permIndex * 4;
+        } else {
+            int appOpIndex = ALL_APPOP_PERMISSIONS.indexOf(name);
+
+            if (appOpIndex != -1) {
+                return MetricsEvent.ACTION_APPOP_REQUEST_ACCESS_NOTIFICATIONS + appOpIndex * 4;
+            } else {
+                if (AppOpsManager.permissionToOpCode(name) == AppOpsManager.OP_NONE
+                        || "user".equals(SystemProperties.get("ro.build.type"))) {
+                    Log.i(LOG_TAG, "Unknown permission " + name);
+
+                    return MetricsEvent.ACTION_PERMISSION_REQUEST_UNKNOWN;
+                } else {
+                    // Most likely #ALL_DANGEROUS_PERMISSIONS or #ALL_APPOP_PERMISSIONS needs to be
+                    // updated.
+                    //
+                    // Also update
+                    // - metrics_constants.proto
+                    // and most likely:
+                    // - PackageManagerService#ALL_DANGEROUS_PERMISSIONS
+                    throw new IllegalStateException("Unknown permission " + name);
+                }
+            }
+        }
+    }
+
+    /**
+     * Log that a permission was requested.
+     *
+     * @param context Context of the caller
+     * @param name name of the permission
+     * @param packageName package permission if for
+     */
+    public static void logPermissionRequested(@NonNull Context context, @NonNull String name,
+            @NonNull String packageName) {
+        MetricsLogger.action(context, getBaseEventId(name), packageName);
+    }
+
+    /**
+     * Log that a permission request was denied.
+     *
+     * @param context Context of the caller
+     * @param name name of the permission
+     * @param packageName package permission if for
+     */
+    public static void logPermissionDenied(@NonNull Context context, @NonNull String name,
+            @NonNull String packageName) {
+        MetricsLogger.action(context, getBaseEventId(name) + 2, packageName);
+    }
+
+}