77 lines
2.6 KiB
Java
77 lines
2.6 KiB
Java
/*
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* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.openintents.openpgp.util;
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import java.util.List;
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import java.util.Locale;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.ResolveInfo;
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public class OpenPgpUtils {
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public static final Pattern PGP_MESSAGE = Pattern.compile(
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".*?(-----BEGIN PGP MESSAGE-----.*?-----END PGP MESSAGE-----).*",
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Pattern.DOTALL);
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public static final Pattern PGP_SIGNED_MESSAGE = Pattern.compile(
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".*?(-----BEGIN PGP SIGNED MESSAGE-----.*?-----BEGIN PGP SIGNATURE-----.*?-----END PGP SIGNATURE-----).*",
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Pattern.DOTALL);
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public static final int PARSE_RESULT_NO_PGP = -1;
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public static final int PARSE_RESULT_MESSAGE = 0;
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public static final int PARSE_RESULT_SIGNED_MESSAGE = 1;
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public static int parseMessage(String message) {
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Matcher matcherSigned = PGP_SIGNED_MESSAGE.matcher(message);
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Matcher matcherMessage = PGP_MESSAGE.matcher(message);
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if (matcherMessage.matches()) {
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return PARSE_RESULT_MESSAGE;
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} else if (matcherSigned.matches()) {
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return PARSE_RESULT_SIGNED_MESSAGE;
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} else {
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return PARSE_RESULT_NO_PGP;
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}
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}
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public static boolean isAvailable(Context context) {
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Intent intent = new Intent(OpenPgpApi.SERVICE_INTENT);
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List<ResolveInfo> resInfo = context.getPackageManager().queryIntentServices(intent, 0);
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if (!resInfo.isEmpty()) {
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return true;
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} else {
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return false;
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}
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}
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public static String convertKeyIdToHex(long keyId) {
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return "0x" + convertKeyIdToHex32bit(keyId >> 32) + convertKeyIdToHex32bit(keyId);
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}
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private static String convertKeyIdToHex32bit(long keyId) {
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String hexString = Long.toHexString(keyId & 0xffffffffL).toLowerCase(Locale.ENGLISH);
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while (hexString.length() < 8) {
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hexString = "0" + hexString;
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}
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return hexString;
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}
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}
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