/*
 * 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.transport;

import org.eclipse.jgit.lib.Constants;

Constants relating to ssh.
Since:
5.2/**
 * Constants relating to ssh.
 *
 * @since 5.2
 */
@SuppressWarnings("nls")
public final class SshConstants {

	private SshConstants() {
		// No instances, please.
	}

	
IANA assigned port number for ssh. /** IANA assigned port number for ssh. */
	public static final int SSH_DEFAULT_PORT = 22;

	
URI scheme for ssh. /** URI scheme for ssh. */
	public static final String SSH_SCHEME = "ssh";

	
URI scheme for sftp. /** URI scheme for sftp. */
	public static final String SFTP_SCHEME = "sftp";

	
Default name for a ssh directory. /** Default name for a ssh directory. */
	public static final String SSH_DIR = ".ssh";

	
Name of the ssh config file. /** Name of the ssh config file. */
	public static final String CONFIG = Constants.CONFIG;

	
Default name of the user "known hosts" file. /** Default name of the user "known hosts" file. */
	public static final String KNOWN_HOSTS = "known_hosts";

	// Config file keys

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String BATCH_MODE = "BatchMode";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String CANONICAL_DOMAINS = "CanonicalDomains";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String CERTIFICATE_FILE = "CertificateFile";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String CIPHERS = "Ciphers";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String COMPRESSION = "Compression";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String CONNECTION_ATTEMPTS = "ConnectionAttempts";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String CONTROL_PATH = "ControlPath";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String GLOBAL_KNOWN_HOSTS_FILE = "GlobalKnownHostsFile";

	
Key in an ssh config file.
Since:
5.5/**
	 * Key in an ssh config file.
	 *
	 * @since 5.5
	 */
	public static final String HASH_KNOWN_HOSTS = "HashKnownHosts";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String HOST = "Host";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String HOST_KEY_ALGORITHMS = "HostKeyAlgorithms";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String HOST_NAME = "HostName";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String IDENTITIES_ONLY = "IdentitiesOnly";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String IDENTITY_AGENT = "IdentityAgent";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String IDENTITY_FILE = "IdentityFile";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String KEX_ALGORITHMS = "KexAlgorithms";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String LOCAL_COMMAND = "LocalCommand";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String LOCAL_FORWARD = "LocalForward";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String MACS = "MACs";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String NUMBER_OF_PASSWORD_PROMPTS = "NumberOfPasswordPrompts";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String PORT = "Port";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String PREFERRED_AUTHENTICATIONS = "PreferredAuthentications";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String PROXY_COMMAND = "ProxyCommand";

	
Comma-separated list of jump hosts, defining a jump host chain in
reverse order. Each jump host is a SSH URI or "[user@]host[:port]".
 Reverse order means: to connect A->B->target, one can do in ~/.ssh/config either of: 
Host target
  ProxyJump B,A


or

Host target
  ProxyJump B
Host B
  ProxyJump A

Since:
5.10/**
	 * Comma-separated list of jump hosts, defining a jump host chain <em>in
	 * reverse order</em>. Each jump host is a SSH URI or "[user@]host[:port]".
	 * <p>
	 * Reverse order means: to connect A->B->target, one can do in
	 * {@code ~/.ssh/config} either of:
	 * </p>
	 *
	 * <pre>
	 * Host target
	 *   ProxyJump B,A
	 * </pre>
	 * <p>
	 * <em>or</em>
	 * </p>
	 *
	 * <pre>
	 * Host target
	 *   ProxyJump B
	 *
	 * Host B
	 *   ProxyJump A
	 * </pre>
	 *
	 * @since 5.10
	 */
	public static final String PROXY_JUMP = "ProxyJump";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String REMOTE_COMMAND = "RemoteCommand";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String REMOTE_FORWARD = "RemoteForward";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String SEND_ENV = "SendEnv";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String STRICT_HOST_KEY_CHECKING = "StrictHostKeyChecking";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String USER = "User";

	
Key in an ssh config file. /** Key in an ssh config file. */
	public static final String USER_KNOWN_HOSTS_FILE = "UserKnownHostsFile";

	// Values

	
Flag value. /** Flag value. */
	public static final String YES = "yes";

	
Flag value. /** Flag value. */
	public static final String ON = "on";

	
Flag value. /** Flag value. */
	public static final String TRUE = "true";

	
Flag value. /** Flag value. */
	public static final String NO = "no";

	
Flag value. /** Flag value. */
	public static final String OFF = "off";

	
Flag value. /** Flag value. */
	public static final String FALSE = "false";

	// Default identity file names

	
Name of the default RSA private identity file. /** Name of the default RSA private identity file. */
	public static final String ID_RSA = "id_rsa";

	
Name of the default DSA private identity file. /** Name of the default DSA private identity file. */
	public static final String ID_DSA = "id_dsa";

	
Name of the default ECDSA private identity file. /** Name of the default ECDSA private identity file. */
	public static final String ID_ECDSA = "id_ecdsa";

	
Name of the default ECDSA private identity file. /** Name of the default ECDSA private identity file. */
	public static final String ID_ED25519 = "id_ed25519";

	
All known default identity file names. /** All known default identity file names. */
	public static final String[] DEFAULT_IDENTITIES = { //
			ID_RSA, ID_DSA, ID_ECDSA, ID_ED25519
	};
}