From d1931ffc075f73d043616b7446f14a653609782e Mon Sep 17 00:00:00 2001
From: Aaron Whyte <awhyte@google.com>
Date: Fri, 11 Apr 2014 10:53:58 -0700
Subject: Allowed custom secure-adb confirmation via Activity or Service. It
 used to only be available via an Activity.

Change-Id: Id79a99a70e721f3b567e75d45ffeba779264ec1e
---
 .../android/server/usb/UsbDebuggingManager.java    | 66 +++++++++++++++++-----
 1 file changed, 53 insertions(+), 13 deletions(-)

(limited to 'services/usb/java/com')

diff --git a/services/usb/java/com/android/server/usb/UsbDebuggingManager.java b/services/usb/java/com/android/server/usb/UsbDebuggingManager.java
index f73d425..0946c5a 100644
--- a/services/usb/java/com/android/server/usb/UsbDebuggingManager.java
+++ b/services/usb/java/com/android/server/usb/UsbDebuggingManager.java
@@ -20,6 +20,8 @@ import android.content.ActivityNotFoundException;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
 import android.content.res.Resources;
 import android.net.LocalSocket;
 import android.net.LocalSocketAddress;
@@ -210,7 +212,7 @@ public class UsbDebuggingManager implements Runnable {
                 case MESSAGE_ADB_CONFIRM: {
                     String key = (String)msg.obj;
                     mFingerprints = getFingerprints(key);
-                    showConfirmationDialog(key, mFingerprints);
+                    startConfirmation(key, mFingerprints);
                     break;
                 }
 
@@ -245,22 +247,60 @@ public class UsbDebuggingManager implements Runnable {
         return sb.toString();
     }
 
-    private void showConfirmationDialog(String key, String fingerprints) {
-        Intent intent = new Intent();
+    private void startConfirmation(String key, String fingerprints) {
+        String nameString = Resources.getSystem().getString(
+                com.android.internal.R.string.config_customAdbPublicKeyConfirmationComponent);
+        ComponentName componentName = ComponentName.unflattenFromString(nameString);
+        if (startConfirmationActivity(componentName, key, fingerprints)
+                || startConfirmationService(componentName, key, fingerprints)) {
+            return;
+        }
+        Slog.e(TAG, "unable to start customAdbPublicKeyConfirmationComponent "
+                + nameString + " as an Activity or a Service");
+    }
 
-        ComponentName componentName = ComponentName.unflattenFromString(
-                Resources.getSystem().getString(
-                        com.android.internal.R.string.config_customAdbPublicKeyActivity));
-        intent.setClassName(componentName.getPackageName(),
-                componentName.getClassName());
+    /**
+     * @returns true if the componentName led to an Activity that was started.
+     */
+    private boolean startConfirmationActivity(ComponentName componentName, String key,
+            String fingerprints) {
+        PackageManager packageManager = mContext.getPackageManager();
+        Intent intent = createConfirmationIntent(componentName, key, fingerprints);
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        intent.putExtra("key", key);
-        intent.putExtra("fingerprints", fingerprints);
+        if (packageManager.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY) != null) {
+            try {
+                mContext.startActivity(intent);
+                return true;
+            } catch (ActivityNotFoundException e) {
+                Slog.e(TAG, "unable to start adb whitelist activity: " + componentName, e);
+            }
+        }
+        return false;
+    }
+
+    /**
+     * @returns true if the componentName led to a Service that was started.
+     */
+    private boolean startConfirmationService(ComponentName componentName, String key,
+            String fingerprints) {
+        Intent intent = createConfirmationIntent(componentName, key, fingerprints);
         try {
-            mContext.startActivity(intent);
-        } catch (ActivityNotFoundException e) {
-            Slog.e(TAG, "unable to start UsbDebuggingActivity");
+            if (mContext.startService(intent) != null) {
+                return true;
+            }
+        } catch (SecurityException e) {
+            Slog.e(TAG, "unable to start adb whitelist service: " + componentName, e);
         }
+        return false;
+    }
+
+    private Intent createConfirmationIntent(ComponentName componentName, String key,
+            String fingerprints) {
+        Intent intent = new Intent();
+        intent.setClassName(componentName.getPackageName(), componentName.getClassName());
+        intent.putExtra("key", key);
+        intent.putExtra("fingerprints", fingerprints);
+        return intent;
     }
 
     private File getUserKeyFile() {
-- 
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