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/*
* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2014 Vincent Breitmoser <v.breitmoser@mugenguild.com>
*
* 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.sufficientlysecure.keychain.pgp;
import android.text.TextUtils;
import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
import java.io.Serializable;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* An abstract KeyRing.
* <p/>
* This is an abstract class for all KeyRing constructs. It serves as a common
* denominator of available information, two implementations wrapping the same
* keyring should in all cases agree on the output of all methods described
* here.
*
* @see CanonicalizedKeyRing
* @see org.sufficientlysecure.keychain.provider.CachedPublicKeyRing
*/
public abstract class KeyRing {
abstract public long getMasterKeyId() throws PgpKeyNotFoundException;
abstract public String getPrimaryUserId() throws PgpKeyNotFoundException;
abstract public String getPrimaryUserIdWithFallback() throws PgpKeyNotFoundException;
public UserId getSplitPrimaryUserIdWithFallback() throws PgpKeyNotFoundException {
return splitUserId(getPrimaryUserIdWithFallback());
}
abstract public boolean isRevoked() throws PgpKeyNotFoundException;
abstract public boolean canCertify() throws PgpKeyNotFoundException;
abstract public long getEncryptId() throws PgpKeyNotFoundException;
abstract public boolean hasEncrypt() throws PgpKeyNotFoundException;
abstract public int getVerified() throws PgpKeyNotFoundException;
private static final Pattern USER_ID_PATTERN = Pattern.compile("^(.*?)(?: \\((.*)\\))?(?: <(.*)>)?$");
/**
* Splits userId string into naming part, email part, and comment part
* <p/>
* User ID matching:
* http://fiddle.re/t4p6f
*/
public static UserId splitUserId(final String userId) {
if (!TextUtils.isEmpty(userId)) {
final Matcher matcher = USER_ID_PATTERN.matcher(userId);
if (matcher.matches()) {
return new UserId(matcher.group(1), matcher.group(3), matcher.group(2));
}
}
return new UserId(null, null, null);
}
/**
* Returns a composed user id. Returns null if name is null!
*/
public static String createUserId(UserId userId) {
String userIdString = userId.name; // consider name a required value
if (userIdString != null && !TextUtils.isEmpty(userId.comment)) {
userIdString += " (" + userId.comment + ")";
}
if (userIdString != null && !TextUtils.isEmpty(userId.email)) {
userIdString += " <" + userId.email + ">";
}
return userIdString;
}
public static class UserId implements Serializable {
public final String name;
public final String email;
public final String comment;
public UserId(String name, String email, String comment) {
this.name = name;
this.email = email;
this.comment = comment;
}
}
}
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