From 624ac3cd7b0ab5a385917a2ee4fb0d55ed7c4706 Mon Sep 17 00:00:00 2001
From: Ecco Park <eccopark@google.com>
Date: Mon, 18 Jul 2016 14:08:05 -0700
Subject: [PATCH] GPS: Keep LPP_PROFILE for verizon

1) add isVerizon function to check verizon sim
2) Save the LPP_PROFILE into property when inserting verizon sim.
3) Use this Profile if device is rebooted after removing this sim.
4) This behavior is maintained unless non-verizon sim is inserted

Bug: 24860255

Change-Id: I3633e1adbbf35852f508877255d3f1664e5497f0
Signed-off-by: Ecco Park <eccopark@google.com>
---
 .../server/location/GnssLocationProvider.java      | 46 +++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/services/core/java/com/android/server/location/GnssLocationProvider.java b/services/core/java/com/android/server/location/GnssLocationProvider.java
index 173f76fa52f5..7580cf4f0111 100644
--- a/services/core/java/com/android/server/location/GnssLocationProvider.java
+++ b/services/core/java/com/android/server/location/GnssLocationProvider.java
@@ -393,6 +393,15 @@ public class GnssLocationProvider implements LocationProviderInterface {
     // SIM/Carrier info.
     private final static String SIM_STATE_CHANGED = "android.intent.action.SIM_STATE_CHANGED";
 
+    // Persist property for LPP_PROFILE
+    private final static String LPP_PROFILE = "persist.sys.gps.lpp";
+
+    // VZW PLMN info
+    private static final String[] VzwMccMncList = {"311480", "310004", "20404"};
+    // corresponding GID1 value, empty string means ignore gid1 match.
+    private static final String[] VzwGid1List = {"", "", "BAE0000000000000"};
+
+
     private final PowerManager mPowerManager;
     private final AlarmManager mAlarmManager;
     private final PendingIntent mWakeupIntent;
@@ -507,14 +516,43 @@ public class GnssLocationProvider implements LocationProviderInterface {
         }
     };
 
+    private final boolean isVerizon(String mccMnc, String imsi, String groupId) {
+        if (DEBUG) Log.d(TAG, "simOperator: " + mccMnc);
+        if (!TextUtils.isEmpty(mccMnc) || !TextUtils.isEmpty(imsi)) {
+            for (int i = 0; i < VzwMccMncList.length; i++) {
+                if ((!TextUtils.isEmpty(mccMnc) && mccMnc.equals(VzwMccMncList[i])) ||
+                        (!TextUtils.isEmpty(imsi) && imsi.startsWith(VzwMccMncList[i]))) {
+                    // check gid too if needed
+                    if (TextUtils.isEmpty(VzwGid1List[i]) || VzwGid1List[i].equals(groupId)) {
+                        if (DEBUG) Log.d(TAG, "Verizon UICC");
+                        return true;
+                    }
+                }
+            }
+        }
+        return false;
+    }
+
     private void subscriptionOrSimChanged(Context context) {
         if (DEBUG) Log.d(TAG, "received SIM related action: ");
         TelephonyManager phone = (TelephonyManager)
                 mContext.getSystemService(Context.TELEPHONY_SERVICE);
         String mccMnc = phone.getSimOperator();
+        String imsi = phone.getSubscriberId();
+        String groupId = phone.getGroupIdLevel1();
         if (!TextUtils.isEmpty(mccMnc)) {
             if (DEBUG) Log.d(TAG, "SIM MCC/MNC is available: " + mccMnc);
             synchronized (mLock) {
+                if (isVerizon(mccMnc, imsi, groupId)) {
+                        // load current properties for carrier VZW
+                        loadPropertiesFromResource(context, mProperties);
+                        String lpp_profile = mProperties.getProperty("LPP_PROFILE");
+                        // set the persist property LPP_PROFILE for VZW
+                        SystemProperties.set(LPP_PROFILE, lpp_profile);
+                } else {
+                        // reset the persist property for Non VZW
+                        SystemProperties.set(LPP_PROFILE, "");
+                }
                 reloadGpsProperties(context, mProperties);
                 mNIHandler.setSuplEsEnabled(mSuplEsEnabled);
             }
@@ -571,8 +609,10 @@ public class GnssLocationProvider implements LocationProviderInterface {
     private void reloadGpsProperties(Context context, Properties properties) {
         if (DEBUG) Log.d(TAG, "Reset GPS properties, previous size = " + properties.size());
         loadPropertiesFromResource(context, properties);
+
         boolean isPropertiesLoadedFromFile = false;
         final String gpsHardware = SystemProperties.get("ro.hardware.gps");
+
         if (!TextUtils.isEmpty(gpsHardware)) {
             final String propFilename =
                     PROPERTIES_FILE_PREFIX + "." + gpsHardware + PROPERTIES_FILE_SUFFIX;
@@ -583,7 +623,11 @@ public class GnssLocationProvider implements LocationProviderInterface {
             loadPropertiesFromFile(DEFAULT_PROPERTIES_FILE, properties);
         }
         if (DEBUG) Log.d(TAG, "GPS properties reloaded, size = " + properties.size());
-
+        String lpp_prof = SystemProperties.get(LPP_PROFILE);
+        if (!TextUtils.isEmpty(lpp_prof)) {
+                // override default value of this if lpp_prof is not empty
+                properties.setProperty("LPP_PROFILE", lpp_prof);
+        }
         // TODO: we should get rid of C2K specific setting.
         setSuplHostPort(properties.getProperty("SUPL_HOST"),
                         properties.getProperty("SUPL_PORT"));
-- 
2.11.0