xref: /freebsd/crypto/openssh/readconf.h (revision 7778ab7e0cc22f0824eb1d1047a7ef8b4785267a)
1 /* $OpenBSD: readconf.h,v 1.88 2010/11/13 23:27:50 djm Exp $ */
2 /* $FreeBSD$ */
3 
4 /*
5  * Author: Tatu Ylonen <ylo@cs.hut.fi>
6  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
7  *                    All rights reserved
8  * Functions for reading the configuration file.
9  *
10  * As far as I am concerned, the code I have written for this software
11  * can be used freely for any purpose.  Any derived versions of this
12  * software must be clearly marked as such, and if the derived work is
13  * incompatible with the protocol description in the RFC file, it must be
14  * called by a name other than "ssh" or "Secure Shell".
15  */
16 
17 #ifndef READCONF_H
18 #define READCONF_H
19 
20 /* Data structure for representing a forwarding request. */
21 
22 typedef struct {
23 	char	 *listen_host;		/* Host (address) to listen on. */
24 	int	  listen_port;		/* Port to forward. */
25 	char	 *connect_host;		/* Host to connect. */
26 	int	  connect_port;		/* Port to connect on connect_host. */
27 	int	  allocated_port;	/* Dynamically allocated listen port */
28 }       Forward;
29 /* Data structure for representing option data. */
30 
31 #define MAX_SEND_ENV	256
32 
33 typedef struct {
34 	int     forward_agent;	/* Forward authentication agent. */
35 	int     forward_x11;	/* Forward X11 display. */
36 	int     forward_x11_timeout;	/* Expiration for Cookies */
37 	int     forward_x11_trusted;	/* Trust Forward X11 display. */
38 	int     exit_on_forward_failure;	/* Exit if bind(2) fails for -L/-R */
39 	char   *xauth_location;	/* Location for xauth program */
40 	int     gateway_ports;	/* Allow remote connects to forwarded ports. */
41 	int     use_privileged_port;	/* Don't use privileged port if false. */
42 	int     rhosts_rsa_authentication;	/* Try rhosts with RSA
43 						 * authentication. */
44 	int     rsa_authentication;	/* Try RSA authentication. */
45 	int     pubkey_authentication;	/* Try ssh2 pubkey authentication. */
46 	int     hostbased_authentication;	/* ssh2's rhosts_rsa */
47 	int     challenge_response_authentication;
48 					/* Try S/Key or TIS, authentication. */
49 	int     gss_authentication;	/* Try GSS authentication */
50 	int     gss_deleg_creds;	/* Delegate GSS credentials */
51 	int     password_authentication;	/* Try password
52 						 * authentication. */
53 	int     kbd_interactive_authentication; /* Try keyboard-interactive auth. */
54 	char	*kbd_interactive_devices; /* Keyboard-interactive auth devices. */
55 	int     zero_knowledge_password_authentication;	/* Try jpake */
56 	int     batch_mode;	/* Batch mode: do not ask for passwords. */
57 	int     check_host_ip;	/* Also keep track of keys for IP address */
58 	int     strict_host_key_checking;	/* Strict host key checking. */
59 	int     compression;	/* Compress packets in both directions. */
60 	int     compression_level;	/* Compression level 1 (fast) to 9
61 					 * (best). */
62 	int     tcp_keep_alive;	/* Set SO_KEEPALIVE. */
63 	int	ip_qos_interactive;	/* IP ToS/DSCP/class for interactive */
64 	int	ip_qos_bulk;		/* IP ToS/DSCP/class for bulk traffic */
65 	LogLevel log_level;	/* Level for logging. */
66 
67 	int     port;		/* Port to connect. */
68 	int     address_family;
69 	int     connection_attempts;	/* Max attempts (seconds) before
70 					 * giving up */
71 	int     connection_timeout;	/* Max time (seconds) before
72 					 * aborting connection attempt */
73 	int     number_of_password_prompts;	/* Max number of password
74 						 * prompts. */
75 	int     cipher;		/* Cipher to use. */
76 	char   *ciphers;	/* SSH2 ciphers in order of preference. */
77 	char   *macs;		/* SSH2 macs in order of preference. */
78 	char   *hostkeyalgorithms;	/* SSH2 server key types in order of preference. */
79 	char   *kex_algorithms;	/* SSH2 kex methods in order of preference. */
80 	int	protocol;	/* Protocol in order of preference. */
81 	char   *hostname;	/* Real host to connect. */
82 	char   *host_key_alias;	/* hostname alias for .ssh/known_hosts */
83 	char   *proxy_command;	/* Proxy command for connecting the host. */
84 	char   *user;		/* User to log in as. */
85 	int     escape_char;	/* Escape character; -2 = none */
86 
87 	char   *system_hostfile;/* Path for /etc/ssh/ssh_known_hosts. */
88 	char   *user_hostfile;	/* Path for $HOME/.ssh/known_hosts. */
89 	char   *system_hostfile2;
90 	char   *user_hostfile2;
91 	char   *preferred_authentications;
92 	char   *bind_address;	/* local socket address for connection to sshd */
93 	char   *pkcs11_provider; /* PKCS#11 provider */
94 	int	verify_host_key_dns;	/* Verify host key using DNS */
95 
96 	int     num_identity_files;	/* Number of files for RSA/DSA identities. */
97 	char   *identity_files[SSH_MAX_IDENTITY_FILES];
98 	Key    *identity_keys[SSH_MAX_IDENTITY_FILES];
99 
100 	/* Local TCP/IP forward requests. */
101 	int     num_local_forwards;
102 	Forward *local_forwards;
103 
104 	/* Remote TCP/IP forward requests. */
105 	int     num_remote_forwards;
106 	Forward *remote_forwards;
107 	int	clear_forwardings;
108 
109 	int	enable_ssh_keysign;
110 	int64_t rekey_limit;
111 	int	no_host_authentication_for_localhost;
112 	int	identities_only;
113 	int	server_alive_interval;
114 	int	server_alive_count_max;
115 
116 	int     num_send_env;
117 	char   *send_env[MAX_SEND_ENV];
118 
119 	char	*control_path;
120 	int	control_master;
121 	int     control_persist; /* ControlPersist flag */
122 	int     control_persist_timeout; /* ControlPersist timeout (seconds) */
123 
124 	int	hash_known_hosts;
125 
126 	int	tun_open;	/* tun(4) */
127 	int     tun_local;	/* force tun device (optional) */
128 	int     tun_remote;	/* force tun device (optional) */
129 
130 	char	*local_command;
131 	int	permit_local_command;
132 	int	visual_host_key;
133 
134 	int	use_roaming;
135 
136 	int	hpn_disabled;	/* Switch to disable HPN buffer management. */
137 	int	hpn_buffer_size;	/* User definable size for HPN buffer
138 					 * window. */
139 	int	tcp_rcv_buf_poll;	/* Option to poll recv buf every window
140 					 * transfer. */
141 	int	tcp_rcv_buf;	/* User switch to set tcp recv buffer. */
142 
143 #ifdef	NONE_CIPHER_ENABLED
144 	int	none_enabled;	/* Allow none to be used */
145 	int	none_switch;	/* Use none cipher */
146 #endif
147 }       Options;
148 
149 #define SSHCTL_MASTER_NO	0
150 #define SSHCTL_MASTER_YES	1
151 #define SSHCTL_MASTER_AUTO	2
152 #define SSHCTL_MASTER_ASK	3
153 #define SSHCTL_MASTER_AUTO_ASK	4
154 
155 void     initialize_options(Options *);
156 void     fill_default_options(Options *);
157 int	 read_config_file(const char *, const char *, Options *, int);
158 int	 parse_forward(Forward *, const char *, int, int);
159 
160 int
161 process_config_line(Options *, const char *, char *, const char *, int, int *);
162 
163 void	 add_local_forward(Options *, const Forward *);
164 void	 add_remote_forward(Options *, const Forward *);
165 
166 #endif				/* READCONF_H */
167