commit d3107c5dc7164995c6656b7f6d4b61c53e820fcb
author Michele <mberionne@google.com> Fri Dec 21 15:00:11 2018 -0800
committer Michele <mberionne@google.com> Tue Jan 29 17:40:24 2019 -0800
tree e960f6c3b419cecf815492d6b3b692cb896ad011
parent 38aaf2e16d56a65b1f9b14a3fdafbb092e82bdcb

Add APIs to get/set if usage of multiple SIMs is restricted.

Add API that indicates if the usage of multiple SIMs at the same time is
allowed or restricted in order to support requirements from carriers for
dual SIM devices.

Bug: 123537730
Test: verified with test application.
Change-Id: I1aa1f53d2889621403b3b52bb7dc2acbbd79a499
Merged-In: I1aa1f53d2889621403b3b52bb7dc2acbbd79a499
(cherry picked from commit cea4cf2dbcd8012c6e64fc46e8c537045105eacc)

src/com/android/phone/PhoneInterfaceManager.java

diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 5947024..ebd69a8 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -265,6 +265,9 @@
     private static final String PREF_CARRIERS_SUBSCRIBER_PREFIX = "carrier_subscriber_";
     private static final String PREF_PROVISION_IMS_MMTEL_PREFIX = "provision_ims_mmtel_";
 
+    // String to store multi SIM allowed
+    private static final String PREF_MULTI_SIM_RESTRICTED = "multisim_restricted";
+
     // The AID of ISD-R.
     private static final String ISDR_AID = "A0000005591010FFFFFFFF8900000100";
 
@@ -6448,4 +6451,38 @@
             Binder.restoreCallingIdentity(identity);
         }
     }
+
+    @Override
+    public void setMultisimCarrierRestriction(boolean isMultisimCarrierRestricted) {
+        enforceModifyPermission();
+
+        final long identity = Binder.clearCallingIdentity();
+        try {
+            mTelephonySharedPreferences.edit()
+                    .putBoolean(PREF_MULTI_SIM_RESTRICTED, isMultisimCarrierRestricted)
+                    .commit();
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+
+    @Override
+    public boolean isMultisimCarrierRestricted() {
+        enforceReadPrivilegedPermission("isMultisimCarrierRestricted");
+
+        final long identity = Binder.clearCallingIdentity();
+        try {
+            // If the device has less than 2 SIM cards, indicate that multisim is restricted.
+            int numPhysicalSlots = UiccController.getInstance().getUiccSlots().length;
+            if (numPhysicalSlots < 2) {
+                loge("isMultisimCarrierRestricted: requires at least 2 cards");
+                return true;
+            }
+
+            // Default value is false. Multi SIM is allowed unless explicitly restricted.
+            return mTelephonySharedPreferences.getBoolean(PREF_MULTI_SIM_RESTRICTED, false);
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
 }