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d27b947178
[auth-options.c auth-options.h channels.c channels.h clientloop.c]
[misc.c misc.h readconf.c readconf.h scp.c servconf.c servconf.h]
[serverloop.c sftp.c ssh.1 ssh.c ssh_config ssh_config.5 sshconnect.c]
[sshconnect.h sshd.8 sshd_config sshd_config.5]
Add support for tun(4) forwarding over OpenSSH, based on an idea and
initial channel code bits by markus@. This is a simple and easy way to
use OpenSSH for ad hoc virtual private network connections, e.g.
administrative tunnels or secure wireless access. It's based on a new
ssh channel and works similar to the existing TCP forwarding support,
except that it depends on the tun(4) network interface on both ends of
the connection for layer 2 or layer 3 tunneling. This diff also adds
support for LocalCommand in the ssh(1) client.
ok djm@, markus@, jmc@ (manpages), tested and discussed with others
145 lines
5.3 KiB
C
145 lines
5.3 KiB
C
/* $OpenBSD: readconf.h,v 1.68 2005/12/06 22:38:27 reyk Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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* Functions for reading the configuration file.
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*
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* As far as I am concerned, the code I have written for this software
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* can be used freely for any purpose. Any derived versions of this
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* software must be clearly marked as such, and if the derived work is
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* incompatible with the protocol description in the RFC file, it must be
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* called by a name other than "ssh" or "Secure Shell".
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*/
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#ifndef READCONF_H
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#define READCONF_H
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#include "key.h"
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/* Data structure for representing a forwarding request. */
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typedef struct {
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char *listen_host; /* Host (address) to listen on. */
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u_short listen_port; /* Port to forward. */
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char *connect_host; /* Host to connect. */
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u_short connect_port; /* Port to connect on connect_host. */
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} Forward;
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/* Data structure for representing option data. */
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#define MAX_SEND_ENV 256
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typedef struct {
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int forward_agent; /* Forward authentication agent. */
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int forward_x11; /* Forward X11 display. */
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int forward_x11_trusted; /* Trust Forward X11 display. */
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char *xauth_location; /* Location for xauth program */
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int gateway_ports; /* Allow remote connects to forwarded ports. */
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int use_privileged_port; /* Don't use privileged port if false. */
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int rhosts_rsa_authentication; /* Try rhosts with RSA
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* authentication. */
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int rsa_authentication; /* Try RSA authentication. */
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int pubkey_authentication; /* Try ssh2 pubkey authentication. */
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int hostbased_authentication; /* ssh2's rhosts_rsa */
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int challenge_response_authentication;
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/* Try S/Key or TIS, authentication. */
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int gss_authentication; /* Try GSS authentication */
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int gss_deleg_creds; /* Delegate GSS credentials */
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int password_authentication; /* Try password
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* authentication. */
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int kbd_interactive_authentication; /* Try keyboard-interactive auth. */
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char *kbd_interactive_devices; /* Keyboard-interactive auth devices. */
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int batch_mode; /* Batch mode: do not ask for passwords. */
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int check_host_ip; /* Also keep track of keys for IP address */
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int strict_host_key_checking; /* Strict host key checking. */
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int compression; /* Compress packets in both directions. */
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int compression_level; /* Compression level 1 (fast) to 9
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* (best). */
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int tcp_keep_alive; /* Set SO_KEEPALIVE. */
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LogLevel log_level; /* Level for logging. */
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int port; /* Port to connect. */
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int address_family;
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int connection_attempts; /* Max attempts (seconds) before
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* giving up */
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int connection_timeout; /* Max time (seconds) before
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* aborting connection attempt */
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int number_of_password_prompts; /* Max number of password
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* prompts. */
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int cipher; /* Cipher to use. */
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char *ciphers; /* SSH2 ciphers in order of preference. */
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char *macs; /* SSH2 macs in order of preference. */
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char *hostkeyalgorithms; /* SSH2 server key types in order of preference. */
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int protocol; /* Protocol in order of preference. */
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char *hostname; /* Real host to connect. */
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char *host_key_alias; /* hostname alias for .ssh/known_hosts */
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char *proxy_command; /* Proxy command for connecting the host. */
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char *user; /* User to log in as. */
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int escape_char; /* Escape character; -2 = none */
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char *system_hostfile;/* Path for /etc/ssh/ssh_known_hosts. */
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char *user_hostfile; /* Path for $HOME/.ssh/known_hosts. */
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char *system_hostfile2;
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char *user_hostfile2;
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char *preferred_authentications;
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char *bind_address; /* local socket address for connection to sshd */
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char *smartcard_device; /* Smartcard reader device */
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int verify_host_key_dns; /* Verify host key using DNS */
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int num_identity_files; /* Number of files for RSA/DSA identities. */
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char *identity_files[SSH_MAX_IDENTITY_FILES];
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Key *identity_keys[SSH_MAX_IDENTITY_FILES];
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/* Local TCP/IP forward requests. */
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int num_local_forwards;
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Forward local_forwards[SSH_MAX_FORWARDS_PER_DIRECTION];
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/* Remote TCP/IP forward requests. */
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int num_remote_forwards;
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Forward remote_forwards[SSH_MAX_FORWARDS_PER_DIRECTION];
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int clear_forwardings;
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int enable_ssh_keysign;
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int rekey_limit;
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int no_host_authentication_for_localhost;
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int identities_only;
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int server_alive_interval;
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int server_alive_count_max;
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int num_send_env;
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char *send_env[MAX_SEND_ENV];
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char *control_path;
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int control_master;
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int hash_known_hosts;
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int tun_open; /* tun(4) */
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int tun_local; /* force tun device (optional) */
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int tun_remote; /* force tun device (optional) */
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char *local_command;
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int permit_local_command;
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} Options;
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#define SSHCTL_MASTER_NO 0
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#define SSHCTL_MASTER_YES 1
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#define SSHCTL_MASTER_AUTO 2
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#define SSHCTL_MASTER_ASK 3
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#define SSHCTL_MASTER_AUTO_ASK 4
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void initialize_options(Options *);
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void fill_default_options(Options *);
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int read_config_file(const char *, const char *, Options *, int);
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int parse_forward(Forward *, const char *);
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int
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process_config_line(Options *, const char *, char *, const char *, int, int *);
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void add_local_forward(Options *, const Forward *);
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void add_remote_forward(Options *, const Forward *);
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#endif /* READCONF_H */
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