diff options
Diffstat (limited to 'src/org/openintents/openpgp/util/OpenPgpUtils.java')
-rw-r--r-- | src/org/openintents/openpgp/util/OpenPgpUtils.java | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/org/openintents/openpgp/util/OpenPgpUtils.java b/src/org/openintents/openpgp/util/OpenPgpUtils.java new file mode 100644 index 000000000..e24c937aa --- /dev/null +++ b/src/org/openintents/openpgp/util/OpenPgpUtils.java @@ -0,0 +1,76 @@ +/* + * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de> + * + * 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 org.openintents.openpgp.util; + +import java.util.List; +import java.util.Locale; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +import android.content.Context; +import android.content.Intent; +import android.content.pm.ResolveInfo; + +public class OpenPgpUtils { + + public static final Pattern PGP_MESSAGE = Pattern.compile( + ".*?(-----BEGIN PGP MESSAGE-----.*?-----END PGP MESSAGE-----).*", + Pattern.DOTALL); + + public static final Pattern PGP_SIGNED_MESSAGE = Pattern.compile( + ".*?(-----BEGIN PGP SIGNED MESSAGE-----.*?-----BEGIN PGP SIGNATURE-----.*?-----END PGP SIGNATURE-----).*", + Pattern.DOTALL); + + public static final int PARSE_RESULT_NO_PGP = -1; + public static final int PARSE_RESULT_MESSAGE = 0; + public static final int PARSE_RESULT_SIGNED_MESSAGE = 1; + + public static int parseMessage(String message) { + Matcher matcherSigned = PGP_SIGNED_MESSAGE.matcher(message); + Matcher matcherMessage = PGP_MESSAGE.matcher(message); + + if (matcherMessage.matches()) { + return PARSE_RESULT_MESSAGE; + } else if (matcherSigned.matches()) { + return PARSE_RESULT_SIGNED_MESSAGE; + } else { + return PARSE_RESULT_NO_PGP; + } + } + + public static boolean isAvailable(Context context) { + Intent intent = new Intent(OpenPgpApi.SERVICE_INTENT); + List<ResolveInfo> resInfo = context.getPackageManager().queryIntentServices(intent, 0); + if (!resInfo.isEmpty()) { + return true; + } else { + return false; + } + } + + public static String convertKeyIdToHex(long keyId) { + return "0x" + convertKeyIdToHex32bit(keyId >> 32) + convertKeyIdToHex32bit(keyId); + } + + private static String convertKeyIdToHex32bit(long keyId) { + String hexString = Long.toHexString(keyId & 0xffffffffL).toLowerCase(Locale.US); + while (hexString.length() < 8) { + hexString = "0" + hexString; + } + return hexString; + } +} |