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1/* $OpenBSD: sshconnect.h,v 1.50 2026/02/13 01:04:47 jsg Exp $ */
2
3/*
4 * Copyright (c) 2000 Markus Friedl. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27struct sshkey;
28
29typedef struct Sensitive Sensitive;
30struct Sensitive {
31 struct sshkey **keys;
32 int nkeys;
33};
34
35struct ssh_conn_info {
36 char *conn_hash_hex;
37 char *shorthost;
38 char *uidstr;
39 char *keyalias;
40 char *thishost;
41 char *host_arg;
42 char *portstr;
43 char *remhost;
44 char *remuser;
45 char *homedir;
46 char *locuser;
47 char *jmphost;
48};
49
50struct addrinfo;
51struct ssh;
52struct hostkeys;
53
54/* default argument for client percent expansions, minus remote user */
55#define DEFAULT_CLIENT_PERCENT_EXPAND_ARGS_NOUSER(conn_info) \
56 "L", conn_info->shorthost, \
57 "i", conn_info->uidstr, \
58 "k", conn_info->keyalias, \
59 "l", conn_info->thishost, \
60 "n", conn_info->host_arg, \
61 "p", conn_info->portstr, \
62 "d", conn_info->homedir, \
63 "h", conn_info->remhost, \
64 "u", conn_info->locuser, \
65 "j", conn_info->jmphost
66
67/* same plus remote user and hash which has user as a component */
68#define DEFAULT_CLIENT_PERCENT_EXPAND_ARGS(conn_info) \
69 DEFAULT_CLIENT_PERCENT_EXPAND_ARGS_NOUSER(conn_info), \
70 "C", conn_info->conn_hash_hex, \
71 "r", conn_info->remuser
72
73int ssh_connect(struct ssh *, const char *, const char *,
74 struct addrinfo *, struct sockaddr_storage *, u_short,
75 int, int *, int);
76void ssh_kill_proxy_command(void);
77
78void ssh_login(struct ssh *, Sensitive *, const char *,
79 struct sockaddr *, u_short, struct passwd *, int,
80 const struct ssh_conn_info *);
81
82int verify_host_key(char *, struct sockaddr *, struct sshkey *,
83 const struct ssh_conn_info *);
84
85void get_hostfile_hostname_ipaddr(char *, struct sockaddr *, u_short,
86 char **, char **);
87
88void ssh_kex2(struct ssh *ssh, char *, struct sockaddr *, u_short,
89 const struct ssh_conn_info *);
90
91void ssh_userauth2(struct ssh *ssh, const char *, const char *,
92 char *, Sensitive *);
93
94int ssh_local_cmd(const char *);
95
96void maybe_add_key_to_agent(const char *, struct sshkey *,
97 const char *, const char *);
98
99void load_hostkeys_command(struct hostkeys *, const char *,
100 const char *, const struct ssh_conn_info *,
101 const struct sshkey *, const char *);
102
103int hostkey_accepted_by_hostkeyalgs(const struct sshkey *);