sshconnect.h revision 296781 
1/* $OpenBSD: sshconnect.h,v 1.29 2015/11/15 22:26:49 jcs 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
27typedef struct Sensitive Sensitive;
28struct Sensitive {
29	Key	**keys;
30	int	nkeys;
31	int	external_keysign;
32};
33
34struct addrinfo;
35int	 ssh_connect(const char *, struct addrinfo *, struct sockaddr_storage *,
36    u_short, int, int, int *, int, int);
37void	 ssh_kill_proxy_command(void);
38
39void	 ssh_login(Sensitive *, const char *, struct sockaddr *, u_short,
40    struct passwd *, int);
41
42void	 ssh_exchange_identification(int);
43
44int	 verify_host_key(char *, struct sockaddr *, Key *);
45
46void	 get_hostfile_hostname_ipaddr(char *, struct sockaddr *, u_short,
47    char **, char **);
48
49void	 ssh_kex(char *, struct sockaddr *);
50void	 ssh_kex2(char *, struct sockaddr *, u_short);
51
52void	 ssh_userauth1(const char *, const char *, char *, Sensitive *);
53void	 ssh_userauth2(const char *, const char *, char *, Sensitive *);
54
55void	 ssh_put_password(char *);
56int	 ssh_local_cmd(const char *);
57
58void	 maybe_add_key_to_agent(char *, Key *, char *, char *);
59
60/*
61 * Macros to raise/lower permissions.
62 */
63#define PRIV_START do {					\
64	int save_errno = errno;				\
65	if (seteuid(original_effective_uid) != 0)	\
66		fatal("PRIV_START: seteuid: %s",	\
67		    strerror(errno));			\
68	errno = save_errno;				\
69} while (0)
70
71#define PRIV_END do {					\
72	int save_errno = errno;				\
73	if (seteuid(original_real_uid) != 0)		\
74		fatal("PRIV_END: seteuid: %s",		\
75		    strerror(errno));			\
76	errno = save_errno;				\
77} while (0)
78