| /* |
| * Copyright (C) 2018, 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.File; |
| 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.annotations.NonNull; |
| import org.eclipse.jgit.internal.transport.ssh.OpenSshConfigFile; |
| import org.eclipse.jgit.internal.transport.ssh.OpenSshConfigFile.HostEntry; |
| import org.eclipse.jgit.transport.SshConstants; |
| |
| /** |
| * A {@link HostConfigEntryResolver} adapted specifically for JGit. |
| * <p> |
| * We use our own config file parser and entry resolution since the default |
| * {@link org.apache.sshd.client.config.hosts.ConfigFileHostEntryResolver |
| * ConfigFileHostEntryResolver} has a number of problems: |
| * </p> |
| * <ul> |
| * <li>It does case-insensitive pattern matching. Matching in OpenSsh is |
| * case-sensitive! Compare also bug 531118.</li> |
| * <li>It only merges values from the global items (before the first "Host" |
| * line) into the host entries. Otherwise it selects the most specific match. |
| * OpenSsh processes <em>all</em> entries in the order they appear in the file |
| * and whenever one matches, it updates values as appropriate.</li> |
| * <li>We have to ensure that ~ replacement uses the same HOME directory as |
| * JGit. Compare bug bug 526175.</li> |
| * </ul> |
| * Therefore, this re-uses the parsing and caching from |
| * {@link OpenSshConfigFile}. |
| * |
| */ |
| public class JGitSshConfig implements HostConfigEntryResolver { |
| |
| private final OpenSshConfigFile configFile; |
| |
| private final String localUserName; |
| |
| /** |
| * Creates a new {@link OpenSshConfigFile} that will read the config from |
| * file {@code config} use the given file {@code home} as "home" directory. |
| * |
| * @param home |
| * user's home directory for the purpose of ~ replacement |
| * @param config |
| * file to load; may be {@code null} if no ssh config file |
| * handling is desired |
| * @param localUserName |
| * user name of the current user on the local host OS |
| */ |
| public JGitSshConfig(@NonNull File home, File config, |
| @NonNull String localUserName) { |
| this.localUserName = localUserName; |
| configFile = config == null ? null : new OpenSshConfigFile(home, config, localUserName); |
| } |
| |
| @Override |
| public HostConfigEntry resolveEffectiveHost(String host, int port, |
| SocketAddress localAddress, String username, |
| AttributeRepository attributes) throws IOException { |
| HostEntry entry = configFile == null ? new HostEntry() : 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 = localUserName; |
| } |
| 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; |
| } |
| |
| } |