xref: /netbsd-src/crypto/external/bsd/openssh/dist/sshconnect.h (revision 6a493d6bc668897c91594964a732d38505b70cbb)
1 /*	$NetBSD: sshconnect.h,v 1.4 2011/07/25 03:03:11 christos Exp $	*/
2 /* $OpenBSD: sshconnect.h,v 1.27 2010/11/29 23:45:51 djm Exp $ */
3 
4 /*
5  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 typedef struct Sensitive Sensitive;
29 struct Sensitive {
30 	Key	**keys;
31 	int	nkeys;
32 	int	external_keysign;
33 };
34 
35 int
36 ssh_connect(const char *, struct sockaddr_storage *, u_short, int, int,
37     int *, int, int, const char *);
38 void	 ssh_kill_proxy_command(void);
39 
40 void	 ssh_login(Sensitive *, const char *, struct sockaddr *, u_short,
41     struct passwd *, int);
42 
43 void	 ssh_exchange_identification(int);
44 
45 int	 verify_host_key(char *, struct sockaddr *, Key *);
46 
47 void	 get_hostfile_hostname_ipaddr(char *, struct sockaddr *, u_short,
48     char **, char **);
49 
50 void	 ssh_kex(char *, struct sockaddr *);
51 void	 ssh_kex2(char *, struct sockaddr *, u_short);
52 
53 void	 ssh_userauth1(const char *, const char *, char *, Sensitive *);
54 void	 ssh_userauth2(const char *, const char *, char *, Sensitive *);
55 
56 void	 ssh_put_password(char *);
57 int	 ssh_local_cmd(const char *);
58 
59 /*
60  * Macros to raise/lower permissions.
61  */
62 #define PRIV_START do {					\
63 	int save_errno = errno;				\
64 	if (seteuid(original_effective_uid) != 0)	\
65 		fatal("PRIV_START: seteuid: %s",	\
66 		    strerror(errno));			\
67 	errno = save_errno;				\
68 } while (0)
69 
70 #define PRIV_END do {					\
71 	int save_errno = errno;				\
72 	if (seteuid(original_real_uid) != 0)		\
73 		fatal("PRIV_END: seteuid: %s",		\
74 		    strerror(errno));			\
75 	errno = save_errno;				\
76 } while (0)
77