session-android/src/org/thoughtcrime/securesms/service/VerificationCodeParser.java
2019-01-13 19:25:40 -08:00

45 lines
1.6 KiB
Java

/**
* Copyright (C) 2011 Whisper Systems
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.thoughtcrime.securesms.service;
import android.content.Context;
import org.thoughtcrime.securesms.util.TextSecurePreferences;
import org.whispersystems.libsignal.util.guava.Optional;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class VerificationCodeParser {
private static final Pattern CHALLENGE_PATTERN = Pattern.compile(".*Your (Signal|TextSecure) verification code:? ([0-9]{3,4})-([0-9]{3,4}).*", Pattern.DOTALL);
public static Optional<String> parse(Context context, String messageBody) {
if (messageBody == null) {
return Optional.absent();
}
Matcher challengeMatcher = CHALLENGE_PATTERN.matcher(messageBody);
if (!challengeMatcher.matches() || !TextSecurePreferences.isVerifying(context)) {
return Optional.absent();
}
return Optional.of(challengeMatcher.group(2) + challengeMatcher.group(3));
}
}