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d27b947178
[auth-options.c auth-options.h channels.c channels.h clientloop.c]
[misc.c misc.h readconf.c readconf.h scp.c servconf.c servconf.h]
[serverloop.c sftp.c ssh.1 ssh.c ssh_config ssh_config.5 sshconnect.c]
[sshconnect.h sshd.8 sshd_config sshd_config.5]
Add support for tun(4) forwarding over OpenSSH, based on an idea and
initial channel code bits by markus@. This is a simple and easy way to
use OpenSSH for ad hoc virtual private network connections, e.g.
administrative tunnels or secure wireless access. It's based on a new
ssh channel and works similar to the existing TCP forwarding support,
except that it depends on the tun(4) network interface on both ends of
the connection for layer 2 or layer 3 tunneling. This diff also adds
support for LocalCommand in the ssh(1) client.
ok djm@, markus@, jmc@ (manpages), tested and discussed with others
70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/* $OpenBSD: sshconnect.h,v 1.18 2005/12/06 22:38:28 reyk Exp $ */
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/*
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* Copyright (c) 2000 Markus Friedl. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SSHCONNECT_H
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#define SSHCONNECT_H
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typedef struct Sensitive Sensitive;
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struct Sensitive {
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Key **keys;
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int nkeys;
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int external_keysign;
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};
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int
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ssh_connect(const char *, struct sockaddr_storage *, u_short, int, int,
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int, const char *);
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void
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ssh_login(Sensitive *, const char *, struct sockaddr *, struct passwd *);
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int verify_host_key(char *, struct sockaddr *, Key *);
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void ssh_kex(char *, struct sockaddr *);
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void ssh_kex2(char *, struct sockaddr *);
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void ssh_userauth1(const char *, const char *, char *, Sensitive *);
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void ssh_userauth2(const char *, const char *, char *, Sensitive *);
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void ssh_put_password(char *);
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int ssh_local_cmd(const char *);
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/*
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* Macros to raise/lower permissions.
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*/
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#define PRIV_START do { \
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int save_errno = errno; \
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(void)seteuid(original_effective_uid); \
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errno = save_errno; \
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} while (0)
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#define PRIV_END do { \
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int save_errno = errno; \
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(void)seteuid(original_real_uid); \
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errno = save_errno; \
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} while (0)
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#endif
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