2018-07-29 18:52:45 +02:00
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/**
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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.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.text.ParseException;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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2018-08-15 17:25:22 +02:00
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import org.jivesoftware.smack.util.CloseableUtil;
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2018-08-15 17:36:29 +02:00
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import org.jivesoftware.smack.util.FileUtils;
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2018-07-29 18:52:45 +02:00
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import org.jivesoftware.smackx.ox.store.abstr.AbstractOpenPgpMetadataStore;
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import org.jivesoftware.smackx.ox.store.definition.OpenPgpMetadataStore;
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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.jxmpp.util.XmppDateTime;
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import org.pgpainless.key.OpenPgpV4Fingerprint;
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/**
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* Implementation of the {@link OpenPgpMetadataStore}, which stores metadata information in a file structure.
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* The information is stored in the following 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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* announced.list // list of the users announced key fingerprints and modification dates
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* }
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* </pre>
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*/
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public class FileBasedOpenPgpMetadataStore extends AbstractOpenPgpMetadataStore {
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public static final String ANNOUNCED = "announced.list";
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public static final String RETRIEVED = "retrieved.list";
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private static final Logger LOGGER = Logger.getLogger(FileBasedOpenPgpMetadataStore.class.getName());
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private final File basePath;
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public FileBasedOpenPgpMetadataStore(File basePath) {
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this.basePath = basePath;
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}
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@Override
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public Map<OpenPgpV4Fingerprint, Date> readAnnouncedFingerprintsOf(BareJid contact) throws IOException {
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return readFingerprintsAndDates(getAnnouncedFingerprintsPath(contact));
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}
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@Override
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public void writeAnnouncedFingerprintsOf(BareJid contact, Map<OpenPgpV4Fingerprint, Date> metadata)
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throws IOException {
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File destination = getAnnouncedFingerprintsPath(contact);
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writeFingerprintsAndDates(metadata, destination);
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}
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static Map<OpenPgpV4Fingerprint, Date> readFingerprintsAndDates(File source) throws IOException {
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if (!source.exists() || source.isDirectory()) {
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return new HashMap<>();
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}
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BufferedReader reader = null;
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try {
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InputStream inputStream = FileUtils.prepareFileInputStream(source);
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InputStreamReader isr = new InputStreamReader(inputStream, Util.UTF8);
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reader = new BufferedReader(isr);
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Map<OpenPgpV4Fingerprint, Date> fingerprintDateMap = new HashMap<>();
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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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line = line.trim();
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String[] split = line.split(" ");
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if (split.length != 2) {
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LOGGER.log(Level.FINE, "Skipping invalid line " + lineNr + " in file " + source.getAbsolutePath());
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continue;
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}
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try {
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OpenPgpV4Fingerprint fingerprint = new OpenPgpV4Fingerprint(split[0]);
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Date date = XmppDateTime.parseXEP0082Date(split[1]);
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fingerprintDateMap.put(fingerprint, date);
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} catch (IllegalArgumentException | ParseException e) {
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LOGGER.log(Level.WARNING, "Error parsing fingerprint/date touple in line " + lineNr +
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" of file " + source.getAbsolutePath(), e);
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}
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}
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return fingerprintDateMap;
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2018-08-15 17:25:22 +02:00
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} finally {
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CloseableUtil.maybeClose(reader, LOGGER);
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2018-07-29 18:52:45 +02:00
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}
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}
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static void writeFingerprintsAndDates(Map<OpenPgpV4Fingerprint, Date> data, File destination)
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throws IOException {
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if (data == null || data.isEmpty()) {
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if (!destination.exists()) {
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return;
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2018-08-17 12:22:58 +02:00
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}
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if (!destination.delete()) {
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throw new IOException("Cannot delete file " + destination.getAbsolutePath());
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2018-07-29 18:52:45 +02:00
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}
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return;
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}
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if (!destination.exists()) {
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File parent = destination.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 (!destination.createNewFile()) {
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throw new IOException("Cannot create file " + destination.getAbsolutePath());
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}
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}
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if (destination.isDirectory()) {
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throw new IOException("File " + destination.getAbsolutePath() + " is a directory.");
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}
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BufferedWriter writer = null;
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try {
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OutputStream outputStream = FileUtils.prepareFileOutputStream(destination);
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OutputStreamWriter osw = new OutputStreamWriter(outputStream, Util.UTF8);
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writer = new BufferedWriter(osw);
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for (OpenPgpV4Fingerprint fingerprint : data.keySet()) {
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Date date = data.get(fingerprint);
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String line = fingerprint.toString() + " " +
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(date != null ? XmppDateTime.formatXEP0082Date(date) : XmppDateTime.formatXEP0082Date(new Date()));
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writer.write(line);
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writer.newLine();
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}
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2018-08-15 17:25:22 +02:00
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} finally {
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CloseableUtil.maybeClose(writer, LOGGER);
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2018-07-29 18:52:45 +02:00
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}
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}
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private File getAnnouncedFingerprintsPath(BareJid contact) {
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return new File(FileBasedOpenPgpStore.getContactsPath(basePath, contact), ANNOUNCED);
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}
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2018-08-15 17:25:22 +02:00
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// TODO: This method appears to be unused. Remove it?
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2018-07-29 18:52:45 +02:00
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private File getRetrievedFingerprintsPath(BareJid contact) {
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return new File(FileBasedOpenPgpStore.getContactsPath(basePath, contact), RETRIEVED);
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}
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}
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