140 lines
4.8 KiB
Java
140 lines
4.8 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.filebased;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import org.jivesoftware.smack.util.CloseableUtil;
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import org.jivesoftware.smackx.ox.store.abstr.AbstractOpenPgpTrustStore;
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import org.jivesoftware.smackx.ox.store.definition.OpenPgpTrustStore;
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import org.jivesoftware.smackx.ox.util.FileUtils;
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import org.jivesoftware.smackx.ox.util.Util;
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import org.jxmpp.jid.BareJid;
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import org.pgpainless.key.OpenPgpV4Fingerprint;
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/**
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* Implementation of the {@link OpenPgpTrustStore} which stores information in a directory structure.
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*
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* <pre>
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* {@code
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* <basePath>/
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* <userjid@server.tld>/
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* <fingerprint>.trust // Trust record for a key
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* }
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* </pre>
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*/
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public class FileBasedOpenPgpTrustStore extends AbstractOpenPgpTrustStore {
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private static final Logger LOGGER = Logger.getLogger(FileBasedOpenPgpTrustStore.class.getName());
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private final File basePath;
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public static String TRUST_RECORD(OpenPgpV4Fingerprint fingerprint) {
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return fingerprint.toString() + ".trust";
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}
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public FileBasedOpenPgpTrustStore(File basePath) {
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this.basePath = basePath;
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}
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@Override
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protected Trust readTrust(BareJid owner, OpenPgpV4Fingerprint fingerprint) throws IOException {
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File file = getTrustPath(owner, fingerprint);
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BufferedReader reader = null;
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try {
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InputStream inputStream = FileUtils.prepareFileInputStream(file);
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InputStreamReader isr = new InputStreamReader(inputStream, Util.UTF8);
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reader = new BufferedReader(isr);
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Trust trust = null;
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String line; int lineNr = 0;
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while ((line = reader.readLine()) != null) {
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lineNr++;
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try {
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trust = Trust.valueOf(line);
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break;
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} catch (IllegalArgumentException e) {
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LOGGER.log(Level.WARNING, "Skipping invalid trust record in line " + lineNr + " of file " +
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file.getAbsolutePath());
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}
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}
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return trust != null ? trust : Trust.undecided;
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} catch (IOException e) {
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if (e instanceof FileNotFoundException) {
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return Trust.undecided;
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}
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throw e;
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} finally {
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CloseableUtil.maybeClose(reader, LOGGER);
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}
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}
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@Override
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protected void writeTrust(BareJid owner, OpenPgpV4Fingerprint fingerprint, Trust trust) throws IOException {
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File file = getTrustPath(owner, fingerprint);
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if (trust == null || trust == Trust.undecided) {
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if (!file.exists()) {
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return;
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}
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if (!file.delete()) {
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throw new IOException("Could not delete file " + file.getAbsolutePath());
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}
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}
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File parent = file.getParentFile();
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if (!parent.exists() && !parent.mkdirs()) {
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throw new IOException("Cannot create directory " + parent.getAbsolutePath());
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}
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if (!file.exists()) {
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if (!file.createNewFile()) {
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throw new IOException("Cannot create file " + file.getAbsolutePath());
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}
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} else {
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if (file.isDirectory()) {
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throw new IOException("File " + file.getAbsolutePath() + " is a directory.");
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}
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}
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BufferedWriter writer = null;
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try {
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OutputStream outputStream = FileUtils.prepareFileOutputStream(file);
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OutputStreamWriter osw = new OutputStreamWriter(outputStream, Util.UTF8);
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writer = new BufferedWriter(osw);
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writer.write(trust.toString());
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} finally {
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CloseableUtil.maybeClose(writer, LOGGER);
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}
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}
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private File getTrustPath(BareJid owner, OpenPgpV4Fingerprint fingerprint) {
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return new File(FileBasedOpenPgpStore.getContactsPath(basePath, owner), TRUST_RECORD(fingerprint));
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}
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}
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