wifi:Provide UI with SIM info for EAP-SIM authentication

User Interface requires the SIM information (viz. number / type
of SIM's supported on the device), using which the respective
authentication option is provisioned to the user. This commit
queries the same by invoking a command exposed by the
wpa_supplicant. It is the wpa_supplicant that gets this
information.

CRs-Fixed: 775942
Change-Id: I93c6a5450c806d8fade0103ef96eca986c925eba

4 files changed, 60 insertions, 0 deletions

diff --git a/service/java/com/android/server/wifi/WifiConfigStore.java b/service/java/com/android/server/wifi/WifiConfigStore.java
index 76255d46e..ffcb5c4a0 100755
--- a/service/java/com/android/server/wifi/WifiConfigStore.java
+++ b/service/java/com/android/server/wifi/WifiConfigStore.java
@@ -2653,6 +2653,15 @@ public class WifiConfigStore extends IpConfigStore {
                 }
             }
 
+            if (!mWifiNative.setNetworkVariable(
+                    netId,
+                    WifiConfiguration.SIMNumVarName,
+                    Integer.toString(config.SIMNum))) {
+                loge(config.SIMNum + ": failed to set sim no: "
+                        +config.SIMNum);
+                break setVariables;
+            }
+
             String allowedKeyManagementString =
                 makeString(config.allowedKeyManagement, WifiConfiguration.KeyMgmt.strings);
             if (config.allowedKeyManagement.cardinality() != 0 &&
@@ -3483,6 +3492,15 @@ public class WifiConfigStore extends IpConfigStore {
             }
         }
 
+        value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.SIMNumVarName);
+        if (!TextUtils.isEmpty(value)) {
+            try {
+                config.SIMNum = Integer.parseInt(value);
+            } catch (NumberFormatException ignore) {
+              Log.e(TAG,"error in parsing Selected Sim number " + config.SIMNum);
+            }
+        }
+
         value = mWifiNative.getNetworkVariable(netId, WifiConfiguration.hiddenSSIDVarName);
         config.hiddenSSID = false;
         if (!TextUtils.isEmpty(value)) {
diff --git a/service/java/com/android/server/wifi/WifiNative.java b/service/java/com/android/server/wifi/WifiNative.java
index 0e01e27f7..6b813639d 100644
--- a/service/java/com/android/server/wifi/WifiNative.java
+++ b/service/java/com/android/server/wifi/WifiNative.java
@@ -631,6 +631,10 @@ public class WifiNative {
         return doStringCommand("PKTCNT_POLL");
     }
 
+    public String getSimInfoNative() {
+        return doStringCommand("GET_SIM_INFO");
+    }
+
     public void bssFlush() {
         doBooleanCommand("BSS_FLUSH 0");
     }
diff --git a/service/java/com/android/server/wifi/WifiServiceImpl.java b/service/java/com/android/server/wifi/WifiServiceImpl.java
index 8de6c0fb6..7589673d0 100644
--- a/service/java/com/android/server/wifi/WifiServiceImpl.java
+++ b/service/java/com/android/server/wifi/WifiServiceImpl.java
@@ -798,6 +798,19 @@ public final class WifiServiceImpl extends IWifiManager.Stub {
     }
 
     /**
+     * see {@link android.net.wifi.WifiManager#getSimInfo}
+     */
+    public WifiEapSimInfo getSimInfo() {
+        enforceAccessPermission();
+        if (mWifiStateMachineChannel != null) {
+            return mWifiStateMachine.syncGetSimInfo(mWifiStateMachineChannel);
+        } else {
+            Slog.e(TAG, "mWifiStateMachineChannel is not initialized");
+            return null;
+        }
+    }
+
+    /**
      * see {@link android.net.wifi.WifiAdapter#reportActivityInfo}
      */
     public WifiActivityEnergyInfo reportActivityInfo() {
diff --git a/service/java/com/android/server/wifi/WifiStateMachine.java b/service/java/com/android/server/wifi/WifiStateMachine.java
index d2f8f29d7..3ac209487 100644
--- a/service/java/com/android/server/wifi/WifiStateMachine.java
+++ b/service/java/com/android/server/wifi/WifiStateMachine.java
@@ -629,6 +629,8 @@ public class WifiStateMachine extends StateMachine {
     /* Supplicant is trying to associate to a given SSID */
     static final int CMD_TARGET_SSID                     = BASE + 148;
 
+    static final int CMD_GET_SIM_INFO                    = BASE + 149;
+
     /* Wifi state machine modes of operation */
     /* CONNECT_MODE - connect to any 'known' AP when it becomes available */
     public static final int CONNECT_MODE                   = 1;
@@ -2142,6 +2144,17 @@ public class WifiStateMachine extends StateMachine {
     }
 
     /**
+     * Get sim info  synchronously
+     */
+
+    public WifiEapSimInfo  syncGetSimInfo(AsyncChannel channel) {
+        Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SIM_INFO);
+        WifiEapSimInfo  mWifiEapSimInfo = (WifiEapSimInfo) resultMsg.obj;
+        resultMsg.recycle();
+        return mWifiEapSimInfo;
+    }
+
+    /**
      * Get link layers stats for adapter synchronously
      */
     public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) {
@@ -4805,6 +4818,9 @@ public class WifiStateMachine extends StateMachine {
                         replyToMessage(message, message.what, 0);
                     }
                     break;
+                case CMD_GET_SIM_INFO:
+                    replyToMessage(message,message.what, (WifiEapSimInfo) null);
+                    break;
                 case CMD_GET_LINK_LAYER_STATS:
                     // Not supported hence reply with error message
                     replyToMessage(message, message.what, null);
@@ -5420,6 +5436,15 @@ public class WifiStateMachine extends StateMachine {
                         loge("Failed to set frequency band " + band);
                     }
                     break;
+                case CMD_GET_SIM_INFO:
+                     String mSimInfo =  mWifiNative.getSimInfoNative();
+                     WifiEapSimInfo mWifiEapSimInfo = new WifiEapSimInfo(mSimInfo);
+                     if (mWifiEapSimInfo != null) {
+                         replyToMessage(message, message.what ,(WifiEapSimInfo) mWifiEapSimInfo);
+                     } else {
+                         replyToMessage(message, message.what ,(WifiEapSimInfo) null);
+                     }
+                     break;
                 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE:
                     mBluetoothConnectionActive = (message.arg1 !=
                             BluetoothAdapter.STATE_DISCONNECTED);