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/*
* Copyright (C) 2020 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.ims.rcs.uce.presence.publish;
import android.content.Context;
import android.net.Uri;
import android.telephony.PhoneNumberUtils;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import android.util.Log;
import com.android.ims.rcs.uce.util.UceUtils;
/**
* The util class of publishing device's capabilities.
*/
class PublishUtils {
private static final String LOG_TAG = UceUtils.getLogPrefix() + "PublishUtils";
private static final String SCHEME_SIP = "sip";
private static final String SCHEME_TEL = "tel";
private static final String DOMAIN_SEPARATOR = "@";
public static Uri getDeviceContactUri(Context context, int subId) {
TelephonyManager telephonyManager = getTelephonyManager(context, subId);
if (telephonyManager == null) {
Log.w(LOG_TAG, "getDeviceContactUri: TelephonyManager is null");
return null;
}
// Get the contact uri from ISIM.
Uri contactUri = getContactUriFromIsim(telephonyManager);
if (contactUri != null) {
Log.d(LOG_TAG, "getDeviceContactUri: impu");
return contactUri;
} else {
Log.d(LOG_TAG, "getDeviceContactUri: line number");
return getContactUriFromLine1Number(telephonyManager);
}
}
private static Uri getContactUriFromIsim(TelephonyManager telephonyManager) {
// Get the home network domain and the array of the public user identities
String domain = telephonyManager.getIsimDomain();
String[] impus = telephonyManager.getIsimImpu();
if (TextUtils.isEmpty(domain) || impus == null) {
Log.d(LOG_TAG, "getContactUriFromIsim: domain is null=" + TextUtils.isEmpty(domain));
Log.d(LOG_TAG, "getContactUriFromIsim: impu is null=" +
((impus == null || impus.length == 0) ? "true" : "false"));
return null;
}
for (String impu : impus) {
if (TextUtils.isEmpty(impu)) continue;
Uri impuUri = Uri.parse(impu);
String scheme = impuUri.getScheme();
String schemeSpecificPart = impuUri.getSchemeSpecificPart();
if (SCHEME_SIP.equals(scheme) && !TextUtils.isEmpty(schemeSpecificPart) &&
schemeSpecificPart.endsWith(domain)) {
return impuUri;
}
}
Log.d(LOG_TAG, "getContactUriFromIsim: there is no impu matching the domain");
return null;
}
private static Uri getContactUriFromLine1Number(TelephonyManager telephonyManager) {
String phoneNumber = formatPhoneNumber(telephonyManager.getLine1Number());
if (TextUtils.isEmpty(phoneNumber)) {
Log.w(LOG_TAG, "Cannot get the phone number");
return null;
}
String domain = telephonyManager.getIsimDomain();
if (!TextUtils.isEmpty(domain)) {
return Uri.fromParts(SCHEME_SIP, phoneNumber + DOMAIN_SEPARATOR + domain, null);
} else {
return Uri.fromParts(SCHEME_TEL, phoneNumber, null);
}
}
private static String formatPhoneNumber(final String phoneNumber) {
if (TextUtils.isEmpty(phoneNumber)) {
Log.w(LOG_TAG, "formatPhoneNumber: phone number is empty");
return null;
}
String number = PhoneNumberUtils.stripSeparators(phoneNumber);
return PhoneNumberUtils.normalizeNumber(number);
}
private static TelephonyManager getTelephonyManager(Context context, int subId) {
TelephonyManager telephonyManager = context.getSystemService(TelephonyManager.class);
if (telephonyManager == null) {
return null;
} else {
return telephonyManager.createForSubscriptionId(subId);
}
}
}
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