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/*
* Copyright (C) 2017 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.dialer.phonenumberproto;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.annotation.WorkerThread;
import android.telephony.PhoneNumberUtils;
import android.text.TextUtils;
import com.android.dialer.DialerPhoneNumber;
import com.android.dialer.common.Assert;
import com.android.dialer.common.LogUtil;
import com.google.i18n.phonenumbers.NumberParseException;
import com.google.i18n.phonenumbers.PhoneNumberUtil;
import com.google.i18n.phonenumbers.PhoneNumberUtil.MatchType;
import com.google.i18n.phonenumbers.PhoneNumberUtil.PhoneNumberFormat;
import com.google.i18n.phonenumbers.Phonenumber.PhoneNumber;
import com.google.i18n.phonenumbers.ShortNumberInfo;
/**
* Wrapper for selected methods in {@link PhoneNumberUtil} which uses the {@link DialerPhoneNumber}
* lite proto instead of the {@link com.google.i18n.phonenumbers.Phonenumber.PhoneNumber} POJO.
*
* <p>All methods should be called on a worker thread.
*/
public class DialerPhoneNumberUtil {
private final PhoneNumberUtil phoneNumberUtil;
private final ShortNumberInfo shortNumberInfo;
@WorkerThread
public DialerPhoneNumberUtil() {
Assert.isWorkerThread();
this.phoneNumberUtil = PhoneNumberUtil.getInstance();
this.shortNumberInfo = ShortNumberInfo.getInstance();
}
/**
* Parses the provided raw phone number into a {@link DialerPhoneNumber}.
*
* @see PhoneNumberUtil#parse(CharSequence, String)
*/
@WorkerThread
public DialerPhoneNumber parse(@Nullable String numberToParse, @Nullable String defaultRegion) {
Assert.isWorkerThread();
DialerPhoneNumber.Builder dialerPhoneNumber = DialerPhoneNumber.newBuilder();
if (defaultRegion != null) {
dialerPhoneNumber.setCountryIso(defaultRegion);
}
// Numbers can be null or empty for incoming "unknown" calls.
if (numberToParse == null) {
return dialerPhoneNumber.build();
}
// If the number is a service number, just store the raw number and don't bother trying to parse
// it. PhoneNumberUtil#parse ignores these characters which can lead to confusing behavior, such
// as the numbers "#123" and "123" being considered the same. The "#" can appear in the middle
// of a service number and the "*" can appear at the beginning (see a bug).
if (isServiceNumber(numberToParse)) {
return dialerPhoneNumber.setNormalizedNumber(numberToParse).build();
}
String postDialPortion = PhoneNumberUtils.extractPostDialPortion(numberToParse);
if (!postDialPortion.isEmpty()) {
dialerPhoneNumber.setPostDialPortion(postDialPortion);
}
String networkPortion = PhoneNumberUtils.extractNetworkPortion(numberToParse);
try {
PhoneNumber phoneNumber = phoneNumberUtil.parse(networkPortion, defaultRegion);
if (phoneNumberUtil.isValidNumber(phoneNumber)) {
String validNumber = phoneNumberUtil.format(phoneNumber, PhoneNumberFormat.E164);
if (TextUtils.isEmpty(validNumber)) {
throw new IllegalStateException(
"e164 number should not be empty: " + LogUtil.sanitizePii(numberToParse));
}
// The E164 representation doesn't contain post-dial digits, but we need to preserve them.
if (!postDialPortion.isEmpty()) {
validNumber += postDialPortion;
}
return dialerPhoneNumber.setNormalizedNumber(validNumber).setIsValid(true).build();
}
} catch (NumberParseException e) {
// fall through
}
return dialerPhoneNumber.setNormalizedNumber(networkPortion + postDialPortion).build();
}
/**
* Returns true if the two numbers:
*
* <ul>
* <li>were parseable by libphonenumber (see {@link #parse(String, String)}),
* <li>are a {@link MatchType#SHORT_NSN_MATCH}, {@link MatchType#NSN_MATCH}, or {@link
* MatchType#EXACT_MATCH}, and
* <li>have the same post-dial digits.
* </ul>
*
* <p>If either number is not parseable, returns true if their raw inputs have the same network
* and post-dial portions.
*
* <p>An empty number is never considered to match another number.
*
* @see PhoneNumberUtil#isNumberMatch(PhoneNumber, PhoneNumber)
*/
@WorkerThread
public boolean isMatch(
@NonNull DialerPhoneNumber firstNumberIn, @NonNull DialerPhoneNumber secondNumberIn) {
Assert.isWorkerThread();
// An empty number should not be combined with any other number.
if (firstNumberIn.getNormalizedNumber().isEmpty()
|| secondNumberIn.getNormalizedNumber().isEmpty()) {
return false;
}
// Two numbers with different countries should not match.
if (!firstNumberIn.getCountryIso().equals(secondNumberIn.getCountryIso())) {
return false;
}
PhoneNumber phoneNumber1 = null;
try {
phoneNumber1 =
phoneNumberUtil.parse(firstNumberIn.getNormalizedNumber(), firstNumberIn.getCountryIso());
} catch (NumberParseException e) {
// fall through
}
PhoneNumber phoneNumber2 = null;
try {
phoneNumber2 =
phoneNumberUtil.parse(
secondNumberIn.getNormalizedNumber(), secondNumberIn.getCountryIso());
} catch (NumberParseException e) {
// fall through
}
// If either number is a service number or either number can't be parsed by libphonenumber, just
// fallback to basic textual matching.
if (isServiceNumber(firstNumberIn.getNormalizedNumber())
|| isServiceNumber(secondNumberIn.getNormalizedNumber())
|| phoneNumber1 == null
|| phoneNumber2 == null) {
return firstNumberIn.getNormalizedNumber().equals(secondNumberIn.getNormalizedNumber());
}
// Both numbers are parseable, first check for short codes to so that a number like "5555"
// doesn't match "55555" (due to those being a SHORT_NSN_MATCH below).
if (shortNumberInfo.isPossibleShortNumber(phoneNumber1)
|| shortNumberInfo.isPossibleShortNumber(phoneNumber2)) {
return firstNumberIn.getNormalizedNumber().equals(secondNumberIn.getNormalizedNumber());
}
// Both numbers are parseable, use more sophisticated libphonenumber matching.
MatchType matchType = phoneNumberUtil.isNumberMatch(phoneNumber1, phoneNumber2);
return (matchType == MatchType.SHORT_NSN_MATCH
|| matchType == MatchType.NSN_MATCH
|| matchType == MatchType.EXACT_MATCH)
&& firstNumberIn.getPostDialPortion().equals(secondNumberIn.getPostDialPortion());
}
private boolean isServiceNumber(@NonNull String rawNumber) {
return rawNumber.contains("#") || rawNumber.startsWith("*");
}
}
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