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/*
* Copyright (C) 2018 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.internal.telephony.dataconnection;
import android.content.Context;
import android.os.PersistableBundle;
import android.telephony.Annotation.ApnType;
import android.telephony.CarrierConfigManager;
import android.telephony.Rlog;
import android.telephony.data.ApnSetting;
import android.util.Log;
import com.android.internal.telephony.Phone;
import com.android.internal.telephony.uicc.IccRecords;
import java.util.Arrays;
import java.util.HashSet;
/**
* This class represents a apn setting for create PDP link
*/
public class ApnSettingUtils {
static final String LOG_TAG = "ApnSetting";
private static final boolean DBG = false;
private static boolean iccidMatches(String mvnoData, String iccId) {
String[] mvnoIccidList = mvnoData.split(",");
for (String mvnoIccid : mvnoIccidList) {
if (iccId.startsWith(mvnoIccid)) {
Log.d(LOG_TAG, "mvno icc id match found");
return true;
}
}
return false;
}
private static boolean imsiMatches(String imsiDB, String imsiSIM) {
// Note: imsiDB value has digit number or 'x' character for seperating USIM information
// for MVNO operator. And then digit number is matched at same order and 'x' character
// could replace by any digit number.
// ex) if imsiDB inserted '310260x10xxxxxx' for GG Operator,
// that means first 6 digits, 8th and 9th digit
// should be set in USIM for GG Operator.
int len = imsiDB.length();
if (len <= 0) return false;
if (len > imsiSIM.length()) return false;
for (int idx = 0; idx < len; idx++) {
char c = imsiDB.charAt(idx);
if ((c == 'x') || (c == 'X') || (c == imsiSIM.charAt(idx))) {
continue;
} else {
return false;
}
}
return true;
}
/**
* Check if MVNO type and data match IccRecords.
*
* @param r the IccRecords
* @param mvnoType the MVNO type
* @param mvnoMatchData the MVNO match data
* @return {@code true} if MVNO type and data match IccRecords, {@code false} otherwise.
*/
public static boolean mvnoMatches(IccRecords r, int mvnoType, String mvnoMatchData) {
if (mvnoType == ApnSetting.MVNO_TYPE_SPN) {
String spn = r.getServiceProviderNameWithBrandOverride();
if ((spn != null) && spn.equalsIgnoreCase(mvnoMatchData)) {
return true;
}
} else if (mvnoType == ApnSetting.MVNO_TYPE_IMSI) {
String imsiSIM = r.getIMSI();
if ((imsiSIM != null) && imsiMatches(mvnoMatchData, imsiSIM)) {
return true;
}
} else if (mvnoType == ApnSetting.MVNO_TYPE_GID) {
String gid1 = r.getGid1();
int mvno_match_data_length = mvnoMatchData.length();
if ((gid1 != null) && (gid1.length() >= mvno_match_data_length)
&& gid1.substring(0, mvno_match_data_length).equalsIgnoreCase(mvnoMatchData)) {
return true;
}
} else if (mvnoType == ApnSetting.MVNO_TYPE_ICCID) {
String iccId = r.getIccId();
if ((iccId != null) && iccidMatches(mvnoMatchData, iccId)) {
return true;
}
}
return false;
}
/**
* Check if this APN type is metered.
*
* @param apnType the APN type
* @param phone the phone object
* @return {@code true} if the APN type is metered, {@code false} otherwise.
*/
public static boolean isMeteredApnType(@ApnType int apnType, Phone phone) {
if (phone == null) {
return true;
}
boolean isRoaming = phone.getServiceState().getDataRoaming();
int subId = phone.getSubId();
String carrierConfig;
// First check if the device is roaming. If yes, use the roaming metered APN list.
// Otherwise use the normal metered APN list.
if (isRoaming) {
carrierConfig = CarrierConfigManager.KEY_CARRIER_METERED_ROAMING_APN_TYPES_STRINGS;
} else {
carrierConfig = CarrierConfigManager.KEY_CARRIER_METERED_APN_TYPES_STRINGS;
}
if (DBG) {
Rlog.d(LOG_TAG, "isMeteredApnType: isRoaming=" + isRoaming);
}
CarrierConfigManager configManager = (CarrierConfigManager)
phone.getContext().getSystemService(Context.CARRIER_CONFIG_SERVICE);
if (configManager == null) {
Rlog.e(LOG_TAG, "Carrier config service is not available");
return true;
}
PersistableBundle b = configManager.getConfigForSubId(subId);
if (b == null) {
Rlog.e(LOG_TAG, "Can't get the config. subId = " + subId);
return true;
}
String[] meteredApnTypes = b.getStringArray(carrierConfig);
if (meteredApnTypes == null) {
Rlog.e(LOG_TAG, carrierConfig + " is not available. " + "subId = " + subId);
return true;
}
HashSet<String> meteredApnSet = new HashSet<>(Arrays.asList(meteredApnTypes));
if (DBG) {
Rlog.d(LOG_TAG, "For subId = " + subId + ", metered APN types are "
+ Arrays.toString(meteredApnSet.toArray()));
}
if (meteredApnSet.contains(ApnSetting.getApnTypeString(apnType))) {
if (DBG) Rlog.d(LOG_TAG, ApnSetting.getApnTypeString(apnType) + " is metered.");
return true;
} else if (apnType == ApnSetting.TYPE_ALL) {
// Assuming no configuration error, if at least one APN type is
// metered, then this APN setting is metered.
if (meteredApnSet.size() > 0) {
if (DBG) Rlog.d(LOG_TAG, "APN_TYPE_ALL APN is metered.");
return true;
}
}
if (DBG) Rlog.d(LOG_TAG, ApnSetting.getApnTypeString(apnType) + " is not metered.");
return false;
}
/**
* Check if this APN setting is metered.
*
* @param apn APN setting
* @param phone The phone object
* @return True if this APN setting is metered, otherwise false.
*/
public static boolean isMetered(ApnSetting apn, Phone phone) {
if (phone == null || apn == null) {
return true;
}
for (int apnType : apn.getApnTypes()) {
// If one of the APN type is metered, then this APN setting is metered.
if (isMeteredApnType(apnType, phone)) {
return true;
}
}
return false;
}
}
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