Return to readconf.h CVS log

Up to [local] / src / usr.bin / ssh

Add RemoteCommand option to specify a command in the ssh config
file instead of giving it on the client's command line.  This command
will be executed on the remote host.  The feature allows to automate
tasks using ssh config.
OK markus@

/* $OpenBSD: readconf.h,v 1.122 2017/05/30 18:58:37 bluhm Exp $ */

/*
 * Author: Tatu Ylonen <ylo@cs.hut.fi>
 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
 *                    All rights reserved
 * Functions for reading the configuration file.
 *
 * As far as I am concerned, the code I have written for this software
 * can be used freely for any purpose.  Any derived versions of this
 * software must be clearly marked as such, and if the derived work is
 * incompatible with the protocol description in the RFC file, it must be
 * called by a name other than "ssh" or "Secure Shell".
 */

#ifndef READCONF_H
#define READCONF_H

/* Data structure for representing option data. */

#define MAX_SEND_ENV		256
#define SSH_MAX_HOSTS_FILES	32
#define MAX_CANON_DOMAINS	32
#define PATH_MAX_SUN		(sizeof((struct sockaddr_un *)0)->sun_path)

struct allowed_cname {
	char *source_list;
	char *target_list;
};

typedef struct {
	int     forward_agent;	/* Forward authentication agent. */
	int     forward_x11;	/* Forward X11 display. */
	int     forward_x11_timeout;	/* Expiration for Cookies */
	int     forward_x11_trusted;	/* Trust Forward X11 display. */
	int     exit_on_forward_failure;	/* Exit if bind(2) fails for -L/-R */
	char   *xauth_location;	/* Location for xauth program */
	struct ForwardOptions fwd_opts;	/* forwarding options */
	int     use_privileged_port;	/* Don't use privileged port if false. */
	int     pubkey_authentication;	/* Try ssh2 pubkey authentication. */
	int     hostbased_authentication;	/* ssh2's rhosts_rsa */
	int     challenge_response_authentication;
					/* Try S/Key or TIS, authentication. */
	int     gss_authentication;	/* Try GSS authentication */
	int     gss_deleg_creds;	/* Delegate GSS credentials */
	int     password_authentication;	/* Try password
						 * authentication. */
	int     kbd_interactive_authentication; /* Try keyboard-interactive auth. */
	char	*kbd_interactive_devices; /* Keyboard-interactive auth devices. */
	int     batch_mode;	/* Batch mode: do not ask for passwords. */
	int     check_host_ip;	/* Also keep track of keys for IP address */
	int     strict_host_key_checking;	/* Strict host key checking. */
	int     compression;	/* Compress packets in both directions. */
	int     tcp_keep_alive;	/* Set SO_KEEPALIVE. */
	int	ip_qos_interactive;	/* IP ToS/DSCP/class for interactive */
	int	ip_qos_bulk;		/* IP ToS/DSCP/class for bulk traffic */
	SyslogFacility log_facility;	/* Facility for system logging. */
	LogLevel log_level;	/* Level for logging. */

	int     port;		/* Port to connect. */
	int     address_family;
	int     connection_attempts;	/* Max attempts (seconds) before
					 * giving up */
	int     connection_timeout;	/* Max time (seconds) before
					 * aborting connection attempt */
	int     number_of_password_prompts;	/* Max number of password
						 * prompts. */
	char   *ciphers;	/* SSH2 ciphers in order of preference. */
	char   *macs;		/* SSH2 macs in order of preference. */
	char   *hostkeyalgorithms;	/* SSH2 server key types in order of preference. */
	char   *kex_algorithms;	/* SSH2 kex methods in order of preference. */
	char   *hostname;	/* Real host to connect. */
	char   *host_key_alias;	/* hostname alias for .ssh/known_hosts */
	char   *proxy_command;	/* Proxy command for connecting the host. */
	char   *user;		/* User to log in as. */
	int     escape_char;	/* Escape character; -2 = none */

	u_int	num_system_hostfiles;	/* Paths for /etc/ssh/ssh_known_hosts */
	char   *system_hostfiles[SSH_MAX_HOSTS_FILES];
	u_int	num_user_hostfiles;	/* Path for $HOME/.ssh/known_hosts */
	char   *user_hostfiles[SSH_MAX_HOSTS_FILES];
	char   *preferred_authentications;
	char   *bind_address;	/* local socket address for connection to sshd */
	char   *pkcs11_provider; /* PKCS#11 provider */
	int	verify_host_key_dns;	/* Verify host key using DNS */

	int     num_identity_files;	/* Number of files for RSA/DSA identities. */
	char   *identity_files[SSH_MAX_IDENTITY_FILES];
	int    identity_file_userprovided[SSH_MAX_IDENTITY_FILES];
	struct sshkey *identity_keys[SSH_MAX_IDENTITY_FILES];

	int	num_certificate_files; /* Number of extra certificates for ssh. */
	char	*certificate_files[SSH_MAX_CERTIFICATE_FILES];
	int	certificate_file_userprovided[SSH_MAX_CERTIFICATE_FILES];
	struct sshkey *certificates[SSH_MAX_CERTIFICATE_FILES];

	int	add_keys_to_agent;
	char   *identity_agent;		/* Optional path to ssh-agent socket */

	/* Local TCP/IP forward requests. */
	int     num_local_forwards;
	struct Forward *local_forwards;

	/* Remote TCP/IP forward requests. */
	int     num_remote_forwards;
	struct Forward *remote_forwards;
	int	clear_forwardings;

	/* stdio forwarding (-W) host and port */
	char   *stdio_forward_host;
	int	stdio_forward_port;

	int	enable_ssh_keysign;
	int64_t rekey_limit;
	int	rekey_interval;
	int	no_host_authentication_for_localhost;
	int	identities_only;
	int	server_alive_interval;
	int	server_alive_count_max;

	int     num_send_env;
	char   *send_env[MAX_SEND_ENV];

	char	*control_path;
	int	control_master;
	int     control_persist; /* ControlPersist flag */
	int     control_persist_timeout; /* ControlPersist timeout (seconds) */

	int	hash_known_hosts;

	int	tun_open;	/* tun(4) */
	int     tun_local;	/* force tun device (optional) */
	int     tun_remote;	/* force tun device (optional) */

	char	*local_command;
	int	permit_local_command;
	char	*remote_command;
	int	visual_host_key;

	int	request_tty;

	int	proxy_use_fdpass;

	int	num_canonical_domains;
	char	*canonical_domains[MAX_CANON_DOMAINS];
	int	canonicalize_hostname;
	int	canonicalize_max_dots;
	int	canonicalize_fallback_local;
	int	num_permitted_cnames;
	struct allowed_cname permitted_cnames[MAX_CANON_DOMAINS];

	char	*revoked_host_keys;

	int	 fingerprint_hash;

	int	 update_hostkeys; /* one of SSH_UPDATE_HOSTKEYS_* */

	char   *hostbased_key_types;
	char   *pubkey_key_types;

	char   *jump_user;
	char   *jump_host;
	int	jump_port;
	char   *jump_extra;

	char	*ignored_unknown; /* Pattern list of unknown tokens to ignore */
}       Options;

#define SSH_CANONICALISE_NO	0
#define SSH_CANONICALISE_YES	1
#define SSH_CANONICALISE_ALWAYS	2

#define SSHCTL_MASTER_NO	0
#define SSHCTL_MASTER_YES	1
#define SSHCTL_MASTER_AUTO	2
#define SSHCTL_MASTER_ASK	3
#define SSHCTL_MASTER_AUTO_ASK	4

#define REQUEST_TTY_AUTO	0
#define REQUEST_TTY_NO		1
#define REQUEST_TTY_YES		2
#define REQUEST_TTY_FORCE	3

#define SSHCONF_CHECKPERM	1  /* check permissions on config file */
#define SSHCONF_USERCONF	2  /* user provided config file not system */
#define SSHCONF_POSTCANON	4  /* After hostname canonicalisation */
#define SSHCONF_NEVERMATCH	8  /* Match/Host never matches; internal only */

#define SSH_UPDATE_HOSTKEYS_NO	0
#define SSH_UPDATE_HOSTKEYS_YES	1
#define SSH_UPDATE_HOSTKEYS_ASK	2

void     initialize_options(Options *);
void     fill_default_options(Options *);
void	 fill_default_options_for_canonicalization(Options *);
int	 process_config_line(Options *, struct passwd *, const char *,
    const char *, char *, const char *, int, int *, int);
int	 read_config_file(const char *, struct passwd *, const char *,
    const char *, Options *, int);
int	 parse_forward(struct Forward *, const char *, int, int);
int	 parse_jump(const char *, Options *, int);
int	 default_ssh_port(void);
int	 option_clear_or_none(const char *);
void	 dump_client_config(Options *o, const char *host);

void	 add_local_forward(Options *, const struct Forward *);
void	 add_remote_forward(Options *, const struct Forward *);
void	 add_identity_file(Options *, const char *, const char *, int);
void	 add_certificate_file(Options *, const char *, int);

#endif				/* READCONF_H */