Protect against more Telecom privileged operations

Make sure that all invocations of TelecomManager methods that
could possibly require a permission are protected by a permission
check.

Some of these are overcautious - for example, the UI should never
show the option to return to a call (READ_PHONE_STATE) if we didn't
detect an active call (READ_PHONE_STATE) in the first place, so
it is not strictly necessary to protect against the former. But not
crashing is the most preferable of all options.

Bug: 20266292

Change-Id: Id91dd16e34320a5e607f91dbce9a4296025eeaaf

1 files changed, 10 insertions, 14 deletions

diff --git a/src/com/android/dialer/SpecialCharSequenceMgr.java b/src/com/android/dialer/SpecialCharSequenceMgr.java
index 31aa5c3c7..994829a50 100644
--- a/src/com/android/dialer/SpecialCharSequenceMgr.java
+++ b/src/com/android/dialer/SpecialCharSequenceMgr.java
@@ -32,7 +32,6 @@ import android.os.Looper;
 import android.provider.Settings;
 import android.telecom.PhoneAccount;
 import android.telecom.PhoneAccountHandle;
-import android.telecom.TelecomManager;
 import android.telephony.PhoneNumberUtils;
 import android.telephony.TelephonyManager;
 import android.text.TextUtils;
@@ -48,7 +47,6 @@ import com.android.contacts.common.widget.SelectPhoneAccountDialogFragment.Selec
 import com.android.dialer.calllog.PhoneAccountUtils;
 import com.android.dialer.util.TelecomUtil;
 
-import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -91,13 +89,13 @@ public class SpecialCharSequenceMgr {
     private static QueryHandler sPreviousAdnQueryHandler;
 
     public static class HandleAdnEntryAccountSelectedCallback extends SelectPhoneAccountListener{
-        final private TelecomManager mTelecomManager;
+        final private Context mContext;
         final private QueryHandler mQueryHandler;
         final private SimContactQueryCookie mCookie;
 
-        public HandleAdnEntryAccountSelectedCallback(TelecomManager telecomManager,
+        public HandleAdnEntryAccountSelectedCallback(Context context,
                 QueryHandler queryHandler, SimContactQueryCookie cookie) {
-            mTelecomManager = telecomManager;
+            mContext = context;
             mQueryHandler = queryHandler;
             mCookie = cookie;
         }
@@ -105,7 +103,7 @@ public class SpecialCharSequenceMgr {
         @Override
         public void onPhoneAccountSelected(PhoneAccountHandle selectedAccountHandle,
                 boolean setDefault) {
-            Uri uri = mTelecomManager.getAdnUriForPhoneAccount(selectedAccountHandle);
+            Uri uri = TelecomUtil.getAdnUriForPhoneAccount(mContext, selectedAccountHandle);
             handleAdnQuery(mQueryHandler, mCookie, uri);
             // TODO: Show error dialog if result isn't valid.
         }
@@ -193,6 +191,7 @@ public class SpecialCharSequenceMgr {
      * and query cancel handler implemented in {@link SimContactQueryCookie}.
      */
     static boolean handleAdnEntry(Context context, String input, EditText textField) {
+        context = context.getApplicationContext();
         /* ADN entries are of the form "N(N)(N)#" */
         TelephonyManager telephonyManager =
                 (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
@@ -245,20 +244,19 @@ public class SpecialCharSequenceMgr {
                 sc.progressDialog.getWindow().addFlags(
                         WindowManager.LayoutParams.FLAG_BLUR_BEHIND);
 
-                final TelecomManager telecomManager =
-                        (TelecomManager) context.getSystemService(Context.TELECOM_SERVICE);
                 List<PhoneAccountHandle> subscriptionAccountHandles =
                         PhoneAccountUtils.getSubscriptionPhoneAccounts(context);
 
                 boolean hasUserSelectedDefault = subscriptionAccountHandles.contains(
-                        telecomManager.getDefaultOutgoingPhoneAccount(PhoneAccount.SCHEME_TEL));
+                        TelecomUtil.getDefaultOutgoingPhoneAccount(context,
+                                PhoneAccount.SCHEME_TEL));
 
                 if (subscriptionAccountHandles.size() == 1 || hasUserSelectedDefault) {
-                    Uri uri = telecomManager.getAdnUriForPhoneAccount(null);
+                    Uri uri = TelecomUtil.getAdnUriForPhoneAccount(context, null);
                     handleAdnQuery(handler, sc, uri);
                 } else if (subscriptionAccountHandles.size() > 1){
                     SelectPhoneAccountListener callback =
-                            new HandleAdnEntryAccountSelectedCallback(telecomManager, handler, sc);
+                            new HandleAdnEntryAccountSelectedCallback(context, handler, sc);
 
                     DialogFragment dialogFragment = SelectPhoneAccountDialogFragment.newInstance(
                             subscriptionAccountHandles, callback);
@@ -299,12 +297,10 @@ public class SpecialCharSequenceMgr {
 
     static boolean handlePinEntry(final Context context, final String input) {
         if ((input.startsWith("**04") || input.startsWith("**05")) && input.endsWith("#")) {
-            final TelecomManager telecomManager =
-                    (TelecomManager) context.getSystemService(Context.TELECOM_SERVICE);
             List<PhoneAccountHandle> subscriptionAccountHandles =
                     PhoneAccountUtils.getSubscriptionPhoneAccounts(context);
             boolean hasUserSelectedDefault = subscriptionAccountHandles.contains(
-                    telecomManager.getDefaultOutgoingPhoneAccount(PhoneAccount.SCHEME_TEL));
+                    TelecomUtil.getDefaultOutgoingPhoneAccount(context, PhoneAccount.SCHEME_TEL));
 
             if (subscriptionAccountHandles.size() == 1 || hasUserSelectedDefault) {
                 // Don't bring up the dialog for single-SIM or if the default outgoing account is