IMPU system API implementation

Bug: 237347020
Test: atest frameworks/opt/telephony/tests/telephonytests/src/com/android/internal/telephony
Change-Id: I01894730d4394a885c442866365b664231b4ed42

telephony/common/com/android/internal/telephony/TelephonyPermissions.java

@@ -20,6 +20,7 @@ import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import android.Manifest;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.RequiresPermission;
 import android.app.AppOpsManager;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
@@ -859,7 +860,7 @@ public final class TelephonyPermissions {
             if ((subManager != null) &&
                     (!subManager.isSubscriptionAssociatedWithUser(subId, callerUserHandle))) {
                 // If subId is not associated with calling user, return false.
-                Log.e(LOG_TAG,"User[User ID:" + callerUserHandle.getIdentifier()
+                Log.e(LOG_TAG, "User[User ID:" + callerUserHandle.getIdentifier()
                         + "] is not associated with Subscription ID:" + subId);
                 return false;
 
@@ -869,4 +870,27 @@ public final class TelephonyPermissions {
         }
         return true;
     }
+
+    /**
+     * Ensure the caller (or self, if not processing an IPC) has
+     * {@link android.Manifest.permission#READ_PRIVILEGED_PHONE_STATE} or
+     * {@link android.Manifest.permission#READ_PHONE_NUMBERS}.
+     *
+     * @throws SecurityException if the caller does not have the required permission/privileges
+     */
+    @RequiresPermission(anyOf = {
+            android.Manifest.permission.READ_PHONE_NUMBERS,
+            android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE
+    })
+    public static boolean checkCallingOrSelfReadPrivilegedPhoneStatePermissionOrReadPhoneNumber(
+            Context context, int subId, String callingPackage, @Nullable String callingFeatureId,
+            String message) {
+        if (!SubscriptionManager.isValidSubscriptionId(subId)) {
+            return false;
+        }
+        return (context.checkCallingOrSelfPermission(
+                Manifest.permission.READ_PRIVILEGED_PHONE_STATE) == PERMISSION_GRANTED
+                || checkCallingOrSelfReadPhoneNumber(context, subId, callingPackage,
+                callingFeatureId, message));
+    }
 }

telephony/java/android/telephony/TelephonyManager.java

@@ -6050,6 +6050,7 @@ public class TelephonyManager {
      * @return an array of IMPU strings, with one IMPU per string, or null if
      *      not present or not loaded
      * @hide
+     * @deprecated use {@link #getImsPublicUserIdentities()}
      */
     @UnsupportedAppUsage
     @Nullable
@@ -6069,6 +6070,39 @@ public class TelephonyManager {
         }
     }
 
+    /**
+     * Returns the IMS public user identities (IMPU) of the subscription that was loaded from the
+     * ISIM records {@link #APPTYPE_ISIM}. This value is fetched from the Elementary file EF_IMPU.
+     * The contents of the file are <b>Ip Multimedia Service Public User Identities</b> of the user
+     * as defined in the section 4.2.4 of 3GPP TS 131 103. It contains one or more records.
+     *
+     * @return List of public user identities of type android.net.Uri or empty list  if
+     *         EF_IMPU is not available.
+     * @throws IllegalStateException in case the ISIM hasn’t been loaded
+     * @throws SecurityException if the caller does not have the required permission/privilege
+     * @hide
+     */
+    @NonNull
+    @RequiresPermission(anyOf = {android.Manifest.permission.READ_PHONE_NUMBERS,
+            android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE})
+    @RequiresFeature(PackageManager.FEATURE_TELEPHONY_SUBSCRIPTION)
+    public List<Uri> getImsPublicUserIdentities() {
+        try {
+            IPhoneSubInfo info = getSubscriberInfoService();
+            if (info == null) {
+                throw new RuntimeException("IMPU error: Subscriber Info is null");
+            }
+            return info.getImsPublicUserIdentities(getSubId(), getOpPackageName(),
+                    getAttributionTag());
+        } catch (IllegalArgumentException | NullPointerException ex) {
+            Rlog.e(TAG, "getImsPublicUserIdentities Exception = " + ex);
+        } catch (RemoteException ex) {
+            Rlog.e(TAG, "getImsPublicUserIdentities Exception = " + ex);
+            ex.rethrowAsRuntimeException();
+        }
+        return Collections.EMPTY_LIST;
+    }
+
     /**
      * Device call state: No activity.
      */

telephony/java/com/android/internal/telephony/IPhoneSubInfo.aidl

@@ -192,6 +192,14 @@ interface IPhoneSubInfo {
      */
     String[] getIsimImpu(int subId);
 
+    /**
+     * Fetches the ISIM public user identities (EF_IMPU) from UICC based on subId
+     */
+    @JavaPassthrough(annotation="@android.annotation.RequiresPermission(" +
+    "anyOf={android.Manifest.permission.READ_PHONE_NUMBERS, android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE})")
+     List<Uri> getImsPublicUserIdentities(int subId, String callingPackage,
+                                           String callingFeatureId);
+
     /**
      * Returns the IMS Service Table (IST) that was loaded from the ISIM.
      * @return IMS Service Table or null if not present or not loaded