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/*
* Copyright (C) 2018, 2020 Thomas Wolf <thomas.wolf@paranor.ch> and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.transport.sshd;
import static org.eclipse.jgit.internal.transport.ssh.OpenSshConfigFile.flag;
import static org.eclipse.jgit.internal.transport.ssh.OpenSshConfigFile.positive;
import java.io.IOException;
import java.net.SocketAddress;
import java.util.Map;
import java.util.TreeMap;
import org.apache.sshd.client.config.hosts.HostConfigEntry;
import org.apache.sshd.client.config.hosts.HostConfigEntryResolver;
import org.apache.sshd.common.AttributeRepository;
import org.apache.sshd.common.util.net.SshdSocketAddress;
import org.eclipse.jgit.transport.SshConfigStore;
import org.eclipse.jgit.transport.SshConstants;
import org.eclipse.jgit.transport.SshSessionFactory;
/**
* A bridge between a JGit {@link SshConfigStore} and the Apache MINA sshd
* {@link HostConfigEntryResolver}.
*/
public class JGitSshConfig implements HostConfigEntryResolver {
private final SshConfigStore configFile;
/**
* Creates a new {@link JGitSshConfig} that will read the config from the
* given {@link SshConfigStore}.
*
* @param store
* to use
*/
public JGitSshConfig(SshConfigStore store) {
configFile = store;
}
@Override
public HostConfigEntry resolveEffectiveHost(String host, int port,
SocketAddress localAddress, String username,
AttributeRepository attributes) throws IOException {
SshConfigStore.HostConfig entry = configFile == null
? SshConfigStore.EMPTY_CONFIG
: configFile.lookup(host, port, username);
JGitHostConfigEntry config = new JGitHostConfigEntry();
// Apache MINA conflates all keys, even multi-valued ones, in one map
// and puts multiple values separated by commas in one string. See
// the javadoc on HostConfigEntry.
Map<String, String> allOptions = new TreeMap<>(
String.CASE_INSENSITIVE_ORDER);
allOptions.putAll(entry.getOptions());
// And what if a value contains a comma??
entry.getMultiValuedOptions().entrySet().stream()
.forEach(e -> allOptions.put(e.getKey(),
String.join(",", e.getValue()))); //$NON-NLS-1$
config.setProperties(allOptions);
// The following is an extension from JGitHostConfigEntry
config.setMultiValuedOptions(entry.getMultiValuedOptions());
// Also make sure the underlying properties are set
String hostName = entry.getValue(SshConstants.HOST_NAME);
if (hostName == null || hostName.isEmpty()) {
hostName = host;
}
config.setHostName(hostName);
config.setProperty(SshConstants.HOST_NAME, hostName);
config.setHost(SshdSocketAddress.isIPv6Address(hostName) ? "" : hostName); //$NON-NLS-1$
String user = username != null && !username.isEmpty() ? username
: entry.getValue(SshConstants.USER);
if (user == null || user.isEmpty()) {
user = SshSessionFactory.getLocalUserName();
}
config.setUsername(user);
config.setProperty(SshConstants.USER, user);
int p = port >= 0 ? port : positive(entry.getValue(SshConstants.PORT));
config.setPort(p >= 0 ? p : SshConstants.SSH_DEFAULT_PORT);
config.setProperty(SshConstants.PORT,
Integer.toString(config.getPort()));
config.setIdentities(entry.getValues(SshConstants.IDENTITY_FILE));
config.setIdentitiesOnly(
flag(entry.getValue(SshConstants.IDENTITIES_ONLY)));
return config;
}
}
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