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1/* $OpenBSD: monitor_wrap.h,v 1.53 2025/07/04 07:47:35 djm Exp $ */
2
3/*
4 * Copyright 2002 Niels Provos <provos@citi.umich.edu>
5 * 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#ifndef _MM_WRAP_H_
29#define _MM_WRAP_H_
30
31#define MONITOR_MAX_MSGLEN (4 * 1024 * 1024)
32/* The configuration has to fit in a monitor message along with other state */
33#define MONITOR_MAX_CFGLEN (MONITOR_MAX_MSGLEN - (64 * 1024))
34
35enum mm_keytype { MM_NOKEY, MM_HOSTKEY, MM_USERKEY };
36
37struct ssh;
38struct monitor;
39struct Authctxt;
40struct sshkey;
41struct sshauthopt;
42struct sshkey_sig_details;
43
44void mm_log_handler(LogLevel, int, const char *, void *);
45int mm_is_monitor(void);
46#ifdef WITH_OPENSSL
47DH *mm_choose_dh(int, int, int);
48#endif
49int mm_sshkey_sign(struct ssh *, struct sshkey *, u_char **, size_t *,
50 const u_char *, size_t, const char *, const char *,
51 const char *, u_int compat);
52void mm_inform_authserv(char *, char *);
53struct passwd *mm_getpwnamallow(struct ssh *, const char *);
54char *mm_auth2_read_banner(void);
55int mm_auth_password(struct ssh *, char *);
56int mm_key_allowed(enum mm_keytype, const char *, const char *, struct sshkey *,
57 int, struct sshauthopt **);
58int mm_user_key_allowed(struct ssh *ssh, struct passwd *, struct sshkey *, int,
59 struct sshauthopt **);
60int mm_hostbased_key_allowed(struct ssh *, struct passwd *, const char *,
61 const char *, struct sshkey *);
62int mm_sshkey_verify(const struct sshkey *, const u_char *, size_t,
63 const u_char *, size_t, const char *, u_int, struct sshkey_sig_details **);
64
65void mm_decode_activate_server_options(struct ssh *ssh, struct sshbuf *m);
66
67#ifdef GSSAPI
68OM_uint32 mm_ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
69OM_uint32 mm_ssh_gssapi_accept_ctx(Gssctxt *,
70 gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
71int mm_ssh_gssapi_userok(char *user);
72OM_uint32 mm_ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
73#endif
74
75struct Session;
76void mm_terminate(void);
77int mm_pty_allocate(int *, int *, char *, size_t);
78void mm_session_pty_cleanup2(struct Session *);
79
80void mm_send_keystate(struct ssh *, struct monitor*);
81
82/* state */
83struct include_list;
84void mm_get_state(struct ssh *, struct include_list *, struct sshbuf *,
85 struct sshbuf **, uint64_t *, struct sshbuf **, struct sshbuf **,
86 u_char **, struct sshbuf **, struct sshbuf **);
87
88/* bsdauth */
89int mm_bsdauth_query(void *, char **, char **, u_int *, char ***, u_int **);
90int mm_bsdauth_respond(void *, u_int, char **);
91
92/* config / channels glue */
93void server_process_permitopen(struct ssh *);
94void server_process_channel_timeouts(struct ssh *ssh);
95struct connection_info *
96 server_get_connection_info(struct ssh *, int, int);
97
98#endif /* _MM_WRAP_H_ */