allow prompting for GSS creds
[openssh.git] / readconf.h
1 /* $OpenBSD: readconf.h,v 1.90 2011/05/24 07:15:47 djm Exp $ */
2
3 /*
4  * Author: Tatu Ylonen <ylo@cs.hut.fi>
5  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
6  *                    All rights reserved
7  * Functions for reading the configuration file.
8  *
9  * As far as I am concerned, the code I have written for this software
10  * can be used freely for any purpose.  Any derived versions of this
11  * software must be clearly marked as such, and if the derived work is
12  * incompatible with the protocol description in the RFC file, it must be
13  * called by a name other than "ssh" or "Secure Shell".
14  */
15
16 #ifndef READCONF_H
17 #define READCONF_H
18
19 /* Data structure for representing a forwarding request. */
20
21 typedef struct {
22         char     *listen_host;          /* Host (address) to listen on. */
23         int       listen_port;          /* Port to forward. */
24         char     *connect_host;         /* Host to connect. */
25         int       connect_port;         /* Port to connect on connect_host. */
26         int       allocated_port;       /* Dynamically allocated listen port */
27 }       Forward;
28 /* Data structure for representing option data. */
29
30 #define MAX_SEND_ENV            256
31 #define SSH_MAX_HOSTS_FILES     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_keyex;              /* Try GSS key exchange */
51         int     gss_deleg_creds;        /* Delegate GSS credentials */
52         int     gss_trust_dns;          /* Trust DNS for GSS canonicalization */
53         int     gss_renewal_rekey;      /* Credential renewal forces rekey */
54         int     gss_password_prompt;    /* Prompt and acquire cred with password */
55         char    *gss_client_identity;   /* Principal to initiate GSSAPI with */
56         char    *gss_server_identity;   /* GSSAPI target principal */
57         void    *gss_mechanism_oid;     /* GSS mechanism OID */
58         int     password_authentication;        /* Try password
59                                                  * authentication. */
60         int     kbd_interactive_authentication; /* Try keyboard-interactive auth. */
61         char    *kbd_interactive_devices; /* Keyboard-interactive auth devices. */
62         int     zero_knowledge_password_authentication; /* Try jpake */
63         int     batch_mode;     /* Batch mode: do not ask for passwords. */
64         int     check_host_ip;  /* Also keep track of keys for IP address */
65         int     strict_host_key_checking;       /* Strict host key checking. */
66         int     compression;    /* Compress packets in both directions. */
67         int     compression_level;      /* Compression level 1 (fast) to 9
68                                          * (best). */
69         int     tcp_keep_alive; /* Set SO_KEEPALIVE. */
70         int     ip_qos_interactive;     /* IP ToS/DSCP/class for interactive */
71         int     ip_qos_bulk;            /* IP ToS/DSCP/class for bulk traffic */
72         LogLevel log_level;     /* Level for logging. */
73
74         int     port;           /* Port to connect. */
75         int     address_family;
76         int     connection_attempts;    /* Max attempts (seconds) before
77                                          * giving up */
78         int     connection_timeout;     /* Max time (seconds) before
79                                          * aborting connection attempt */
80         int     number_of_password_prompts;     /* Max number of password
81                                                  * prompts. */
82         int     cipher;         /* Cipher to use. */
83         char   *ciphers;        /* SSH2 ciphers in order of preference. */
84         char   *macs;           /* SSH2 macs in order of preference. */
85         char   *hostkeyalgorithms;      /* SSH2 server key types in order of preference. */
86         char   *kex_algorithms; /* SSH2 kex methods in order of preference. */
87         int     protocol;       /* Protocol in order of preference. */
88         char   *hostname;       /* Real host to connect. */
89         char   *host_key_alias; /* hostname alias for .ssh/known_hosts */
90         char   *proxy_command;  /* Proxy command for connecting the host. */
91         char   *user;           /* User to log in as. */
92         int     escape_char;    /* Escape character; -2 = none */
93
94         u_int   num_system_hostfiles;   /* Paths for /etc/ssh/ssh_known_hosts */
95         char   *system_hostfiles[SSH_MAX_HOSTS_FILES];
96         u_int   num_user_hostfiles;     /* Path for $HOME/.ssh/known_hosts */
97         char   *user_hostfiles[SSH_MAX_HOSTS_FILES];
98         char   *preferred_authentications;
99         char   *bind_address;   /* local socket address for connection to sshd */
100         char   *pkcs11_provider; /* PKCS#11 provider */
101         int     verify_host_key_dns;    /* Verify host key using DNS */
102
103         int     num_identity_files;     /* Number of files for RSA/DSA identities. */
104         char   *identity_files[SSH_MAX_IDENTITY_FILES];
105         Key    *identity_keys[SSH_MAX_IDENTITY_FILES];
106
107         /* Local TCP/IP forward requests. */
108         int     num_local_forwards;
109         Forward *local_forwards;
110
111         /* Remote TCP/IP forward requests. */
112         int     num_remote_forwards;
113         Forward *remote_forwards;
114         int     clear_forwardings;
115
116         int     enable_ssh_keysign;
117         int64_t rekey_limit;
118         int     no_host_authentication_for_localhost;
119         int     identities_only;
120         int     server_alive_interval;
121         int     server_alive_count_max;
122
123         int     num_send_env;
124         char   *send_env[MAX_SEND_ENV];
125
126         char    *control_path;
127         int     control_master;
128         int     control_persist; /* ControlPersist flag */
129         int     control_persist_timeout; /* ControlPersist timeout (seconds) */
130
131         int     hash_known_hosts;
132
133         int     tun_open;       /* tun(4) */
134         int     tun_local;      /* force tun device (optional) */
135         int     tun_remote;     /* force tun device (optional) */
136
137         char    *local_command;
138         int     permit_local_command;
139         int     visual_host_key;
140
141         int     use_roaming;
142
143         int     request_tty;
144 }       Options;
145
146 #define SSHCTL_MASTER_NO        0
147 #define SSHCTL_MASTER_YES       1
148 #define SSHCTL_MASTER_AUTO      2
149 #define SSHCTL_MASTER_ASK       3
150 #define SSHCTL_MASTER_AUTO_ASK  4
151
152 #define REQUEST_TTY_AUTO        0
153 #define REQUEST_TTY_NO          1
154 #define REQUEST_TTY_YES         2
155 #define REQUEST_TTY_FORCE       3
156
157 void     initialize_options(Options *);
158 void     fill_default_options(Options *);
159 int      read_config_file(const char *, const char *, Options *, int);
160 int      parse_forward(Forward *, const char *, int, int);
161
162 int
163 process_config_line(Options *, const char *, char *, const char *, int, int *);
164
165 void     add_local_forward(Options *, const Forward *);
166 void     add_remote_forward(Options *, const Forward *);
167
168 #endif                          /* READCONF_H */