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djm@openbsd.orgdbee4112017-09-12 06:32:07 +00001/* $OpenBSD: sshconnect.h,v 1.31 2017/09/12 06:32:07 djm Exp $ */
Ben Lindstrom36579d32001-01-29 07:39:26 +00002
Damien Millere4340be2000-09-16 13:29:08 +11003/*
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 */
Damien Miller9f2abc42006-07-10 20:53:08 +100026
Ben Lindstrom1bad2562002-06-06 19:57:33 +000027typedef struct Sensitive Sensitive;
28struct Sensitive {
markus@openbsd.org54d90ac2017-05-30 08:52:19 +000029 struct sshkey **keys;
30 int nkeys;
31 int external_keysign;
Ben Lindstrom1bad2562002-06-06 19:57:33 +000032};
33
Damien Miller0faf7472013-10-17 11:47:23 +110034struct addrinfo;
djm@openbsd.orgdbee4112017-09-12 06:32:07 +000035struct ssh;
36
37int ssh_connect(struct ssh *, const char *, struct addrinfo *,
38 struct sockaddr_storage *, u_short, int, int, int *, int, int);
Damien Millera41ccca2010-10-07 22:07:32 +110039void ssh_kill_proxy_command(void);
Ben Lindstrom226cfa02001-01-22 05:34:40 +000040
Damien Millerd925dcd2010-12-01 12:21:51 +110041void ssh_login(Sensitive *, const char *, struct sockaddr *, u_short,
42 struct passwd *, int);
Damien Millereba71ba2000-04-29 23:57:08 +100043
Darren Tucker1cc55d72009-06-21 18:17:19 +100044void ssh_exchange_identification(int);
45
markus@openbsd.org54d90ac2017-05-30 08:52:19 +000046int verify_host_key(char *, struct sockaddr *, struct sshkey *);
Damien Millereba71ba2000-04-29 23:57:08 +100047
Damien Millerd925dcd2010-12-01 12:21:51 +110048void get_hostfile_hostname_ipaddr(char *, struct sockaddr *, u_short,
49 char **, char **);
50
Ben Lindstrom4cc240d2001-07-04 04:46:56 +000051void ssh_kex(char *, struct sockaddr *);
Damien Millerd925dcd2010-12-01 12:21:51 +110052void ssh_kex2(char *, struct sockaddr *, u_short);
Ben Lindstrom5eabda32001-04-12 23:34:34 +000053
Ben Lindstrom1bad2562002-06-06 19:57:33 +000054void ssh_userauth1(const char *, const char *, char *, Sensitive *);
55void ssh_userauth2(const char *, const char *, char *, Sensitive *);
Damien Millereba71ba2000-04-29 23:57:08 +100056
Ben Lindstrom4cc240d2001-07-04 04:46:56 +000057void ssh_put_password(char *);
Damien Millerd27b9472005-12-13 19:29:02 +110058int ssh_local_cmd(const char *);
Ben Lindstromf9c48842002-06-11 16:37:51 +000059
markus@openbsd.org54d90ac2017-05-30 08:52:19 +000060void maybe_add_key_to_agent(char *, struct sshkey *, char *, char *);
jcs@openbsd.orgf361df42015-11-15 22:26:49 +000061
Ben Lindstromf9c48842002-06-11 16:37:51 +000062/*
63 * Macros to raise/lower permissions.
64 */
Damien Miller6b4069a2006-06-13 13:05:15 +100065#define PRIV_START do { \
66 int save_errno = errno; \
67 if (seteuid(original_effective_uid) != 0) \
68 fatal("PRIV_START: seteuid: %s", \
69 strerror(errno)); \
70 errno = save_errno; \
Ben Lindstromf9c48842002-06-11 16:37:51 +000071} while (0)
72
Damien Miller6b4069a2006-06-13 13:05:15 +100073#define PRIV_END do { \
74 int save_errno = errno; \
75 if (seteuid(original_real_uid) != 0) \
76 fatal("PRIV_END: seteuid: %s", \
77 strerror(errno)); \
78 errno = save_errno; \
Ben Lindstromf9c48842002-06-11 16:37:51 +000079} while (0)