[email protected]
e8bdfb151a
state that need to persist for the life of the connection, especially the cached hostkey that was being incorrectly freed early on some paths, possibly allowing its use after free. Reported by Zhenpeng (Leo) Lin from depthfirst.com OpenBSD-Commit-ID: faaa6ad72e7d69d41fa8b197b606265b7d9bc73f
107 lines
3.5 KiB
C
107 lines
3.5 KiB
C
/* $OpenBSD: sshconnect.h,v 1.51 2026/07/06 07:49:58 djm 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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struct sshkey;
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typedef struct Sensitive Sensitive;
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struct Sensitive {
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struct sshkey **keys;
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int nkeys;
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};
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struct ssh_conn_info {
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char *conn_hash_hex;
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char *shorthost;
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char *uidstr;
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char *keyalias;
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char *thishost;
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char *host_arg;
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char *portstr;
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char *remhost;
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char *remuser;
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char *homedir;
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char *locuser;
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char *jmphost;
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};
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struct addrinfo;
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struct ssh;
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struct hostkeys;
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/* default argument for client percent expansions, minus remote user */
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#define DEFAULT_CLIENT_PERCENT_EXPAND_ARGS_NOUSER(conn_info) \
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"L", conn_info->shorthost, \
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"i", conn_info->uidstr, \
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"k", conn_info->keyalias, \
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"l", conn_info->thishost, \
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"n", conn_info->host_arg, \
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"p", conn_info->portstr, \
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"d", conn_info->homedir, \
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"h", conn_info->remhost, \
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"u", conn_info->locuser, \
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"j", conn_info->jmphost
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/* same plus remote user and hash which has user as a component */
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#define DEFAULT_CLIENT_PERCENT_EXPAND_ARGS(conn_info) \
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DEFAULT_CLIENT_PERCENT_EXPAND_ARGS_NOUSER(conn_info), \
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"C", conn_info->conn_hash_hex, \
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"r", conn_info->remuser
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int ssh_connect(struct ssh *, const char *, const char *,
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struct addrinfo *, struct sockaddr_storage *, u_short,
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int, int *, int);
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void ssh_kill_proxy_command(void);
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void ssh_login(struct ssh *, Sensitive *, const char *,
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struct sockaddr_storage *, u_short, struct passwd *, int,
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const struct ssh_conn_info *);
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int verify_host_key(char *, struct sockaddr *, struct sshkey *,
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const struct ssh_conn_info *);
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void get_hostfile_hostname_ipaddr(char *, struct sockaddr *, u_short,
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char **, char **);
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void ssh_kex2(struct ssh *ssh, char *, struct sockaddr_storage *, u_short,
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const struct ssh_conn_info *);
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void ssh_userauth2(struct ssh *ssh, const char *, const char *,
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char *, Sensitive *);
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int ssh_local_cmd(const char *);
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void maybe_add_key_to_agent(const char *, struct sshkey *,
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const char *, const char *);
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void load_hostkeys_command(struct hostkeys *, const char *,
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const char *, const struct ssh_conn_info *,
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const struct sshkey *, const char *);
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int hostkey_accepted_by_hostkeyalgs(const struct sshkey *);
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void ssh_conn_info_free(struct ssh_conn_info *);
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struct ssh_conn_info *ssh_conn_info_dup(const struct ssh_conn_info *);
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