92 lines
3.0 KiB
Java
92 lines
3.0 KiB
Java
/**
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*
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* Copyright 2018 Paul Schaub.
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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.jivesoftware.smackx.ox.store.abstr;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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import org.jivesoftware.smackx.ox.store.definition.OpenPgpTrustStore;
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import org.jxmpp.jid.BareJid;
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import org.pgpainless.key.OpenPgpV4Fingerprint;
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public abstract class AbstractOpenPgpTrustStore implements OpenPgpTrustStore {
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private final Map<BareJid, Map<OpenPgpV4Fingerprint, Trust>> trustCache = new HashMap<>();
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/**
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* Read the trust record for the key with fingerprint {@code fingerprint} of user {@code owner} from local storage.
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* This method returns {@link Trust#undecided} in case that no trust record has been found.
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*
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* @param owner owner of the key
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* @param fingerprint fingerprint of the key
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* @return trust state of the key
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*
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* @throws IOException IO is dangerous
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*/
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protected abstract Trust readTrust(BareJid owner, OpenPgpV4Fingerprint fingerprint) throws IOException;
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/**
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* Write the trust record for the key with fingerprint {@code fingerprint} of user {@code owner} to local storage.
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*
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* @param owner owner of the key
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* @param fingerprint fingerprint of the key
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* @param trust trust state of the key
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*
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* @throws IOException IO is dangerous
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*/
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protected abstract void writeTrust(BareJid owner, OpenPgpV4Fingerprint fingerprint, Trust trust) throws IOException;
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@Override
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public Trust getTrust(BareJid owner, OpenPgpV4Fingerprint fingerprint) throws IOException {
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Trust trust;
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Map<OpenPgpV4Fingerprint, Trust> trustMap = trustCache.get(owner);
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if (trustMap != null) {
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trust = trustMap.get(fingerprint);
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if (trust != null) {
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return trust;
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}
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} else {
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trustMap = new HashMap<>();
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trustCache.put(owner, trustMap);
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}
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trust = readTrust(owner, fingerprint);
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trustMap.put(fingerprint, trust);
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return trust;
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}
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@Override
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public void setTrust(BareJid owner, OpenPgpV4Fingerprint fingerprint, Trust trust) throws IOException {
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Map<OpenPgpV4Fingerprint, Trust> trustMap = trustCache.get(owner);
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if (trustMap == null) {
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trustMap = new HashMap<>();
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trustCache.put(owner, trustMap);
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}
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if (trustMap.get(fingerprint) == trust) {
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return;
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}
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trustMap.put(fingerprint, trust);
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writeTrust(owner, fingerprint, trust);
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}
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}
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