Allow interact-users-full access to scan results

Allow callers that hold INTERACT_ACROSS_USERS_FULL access to scan
results even if they aren't on the current user.

Bug: 16559573
Change-Id: I27fae71b3cdc1c084777242f21fe4bb692ab7135

1 files changed, 13 insertions, 2 deletions

diff --git a/service/java/com/android/server/wifi/WifiServiceImpl.java b/service/java/com/android/server/wifi/WifiServiceImpl.java
index bcaab925a..8066b4c4b 100644
--- a/service/java/com/android/server/wifi/WifiServiceImpl.java
+++ b/service/java/com/android/server/wifi/WifiServiceImpl.java
@@ -508,13 +508,14 @@ public final class WifiServiceImpl extends IWifiManager.Stub {
         if (mBatchedScanSupported == false) return new ArrayList<BatchedScanResult>();
         int uid = Binder.getCallingUid();
         int userId = UserHandle.getCallingUserId();
+        boolean hasInteractUsersFull = checkInteractAcrossUsersFull();
         long ident = Binder.clearCallingIdentity();
         try {
             if (mAppOps.noteOp(AppOpsManager.OP_WIFI_SCAN, uid, callingPackage)
                     != AppOpsManager.MODE_ALLOWED) {
                 return new ArrayList<BatchedScanResult>();
             }
-            if (!isCurrentProfile(userId)) {
+            if (!isCurrentProfile(userId) && !hasInteractUsersFull) {
                 return new ArrayList<BatchedScanResult>();
             }
             return mWifiStateMachine.syncGetBatchedScanResultsList();
@@ -974,13 +975,14 @@ public final class WifiServiceImpl extends IWifiManager.Stub {
         enforceAccessPermission();
         int userId = UserHandle.getCallingUserId();
         int uid = Binder.getCallingUid();
+        boolean hasInteractUsersFull = checkInteractAcrossUsersFull();
         long ident = Binder.clearCallingIdentity();
         try {
             if (mAppOps.noteOp(AppOpsManager.OP_WIFI_SCAN, uid, callingPackage)
                     != AppOpsManager.MODE_ALLOWED) {
                 return new ArrayList<ScanResult>();
             }
-            if (!isCurrentProfile(userId)) {
+            if (!isCurrentProfile(userId) && !hasInteractUsersFull) {
                 return new ArrayList<ScanResult>();
             }
             return mWifiStateMachine.syncGetScanResultsList();
@@ -990,6 +992,15 @@ public final class WifiServiceImpl extends IWifiManager.Stub {
     }
 
     /**
+     * Returns true if the caller holds INTERACT_ACROSS_USERS_FULL.
+     */
+    private boolean checkInteractAcrossUsersFull() {
+        return mContext.checkCallingOrSelfPermission(
+                android.Manifest.permission.INTERACT_ACROSS_USERS_FULL)
+                == PackageManager.PERMISSION_GRANTED;
+    }
+
+    /**
      * Returns true if the calling user is the current one or a profile of the
      * current user..
      */