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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.net.module.util;
import android.annotation.NonNull;
import android.annotation.Nullable;
/**
* Utilities to examine {@link android.net.NetworkIdentity}.
* @hide
*/
public class NetworkIdentityUtils {
/**
* Scrub given IMSI on production builds.
*/
@NonNull
public static String scrubSubscriberId(@Nullable String subscriberId) {
if (subscriberId != null) {
// TODO: parse this as MCC+MNC instead of hard-coding
return subscriberId.substring(0, Math.min(6, subscriberId.length())) + "...";
} else {
return "null";
}
}
/**
* Scrub given IMSI on production builds.
*/
@Nullable
public static String[] scrubSubscriberIds(@Nullable String[] subscriberIds) {
if (subscriberIds == null) return null;
final String[] res = new String[subscriberIds.length];
for (int i = 0; i < res.length; i++) {
res[i] = scrubSubscriberId(subscriberIds[i]);
}
return res;
}
}
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