commit 8330df01a707640627e9b4a9ef3e891942138d5e
author Sooraj Sasindran <sasindran@google.com> Tue Oct 26 02:18:16 2021 -0700
committer Sooraj Sasindran <sasindran@google.com> Mon Dec 06 11:21:54 2021 -0800
tree 98b835e933f790c70160649abd5a338d5ad70fa2
parent 7b0e82975a0d25456f64de049122000496bb2f9d

Provide last known cell id for emergency call

Provide last known cell id to connection service
for emergency calls.

Bug: 198533763
Test: unit test
Change-Id: If9dc2eaa62a0536f5d3befd719a7a7c573bb73e8

AndroidManifest.xml

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 45e3151..0776e9d 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -56,6 +56,7 @@
     <uses-permission android:name="android.permission.READ_BLOCKED_NUMBERS"/>
     <uses-permission android:name="android.permission.WRITE_BLOCKED_NUMBERS"/>
     <uses-permission android:name="android.permission.SUBSTITUTE_NOTIFICATION_APP_NAME"/>
+    <uses-permission android:name="com.android.phone.permission.ACCESS_LAST_KNOWN_CELL_ID"/>
 
     <permission android:name="android.permission.BROADCAST_CALLLOG_INFO"
          android:label="Broadcast the call type/duration information"

src/com/android/server/telecom/ConnectionServiceWrapper.java

diff --git a/src/com/android/server/telecom/ConnectionServiceWrapper.java b/src/com/android/server/telecom/ConnectionServiceWrapper.java
index 21c6844..6eae3e3 100755
--- a/src/com/android/server/telecom/ConnectionServiceWrapper.java
+++ b/src/com/android/server/telecom/ConnectionServiceWrapper.java
@@ -45,6 +45,8 @@
 import android.telecom.StatusHints;
 import android.telecom.TelecomManager;
 import android.telecom.VideoProfile;
+import android.telephony.CellIdentity;
+import android.telephony.TelephonyManager;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.telecom.IConnectionService;
@@ -1197,6 +1199,24 @@
         }
     }
 
+    private CellIdentity getLastKnownCellIdentity() {
+        TelephonyManager telephonyManager = mContext.getSystemService(TelephonyManager.class);
+        if (telephonyManager != null) {
+            CellIdentity lastKnownCellIdentity = telephonyManager.getLastKnownCellIdentity();
+            try {
+                mAppOpsManager.noteOp(AppOpsManager.OP_FINE_LOCATION,
+                        mContext.getPackageManager().getPackageUid(
+                                getComponentName().getPackageName(), 0),
+                        getComponentName().getPackageName());
+            } catch (PackageManager.NameNotFoundException nameNotFoundException) {
+                Log.e(this, nameNotFoundException, "could not find the package -- %s",
+                        getComponentName().getPackageName());
+            }
+            return lastKnownCellIdentity;
+        }
+        return null;
+    }
+
     /**
      * Creates a conference for a new outgoing call or attach to an existing incoming call.
      */
@@ -1316,6 +1336,11 @@
                         Log.piiHandle(call.getHandle()) + " via:" +
                                 getComponentName().getPackageName());
 
+                if (call.isEmergencyCall()) {
+                    extras.putParcelable(Connection.EXTRA_LAST_KNOWN_CELL_IDENTITY,
+                            getLastKnownCellIdentity());
+                }
+
                 ConnectionRequest connectionRequest = new ConnectionRequest.Builder()
                         .setAccountHandle(call.getTargetPhoneAccount())
                         .setAddress(call.getHandle())