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monitor_wrap.h
1 /* $OpenBSD: monitor_wrap.h,v 1.47 2021/04/15 16:24:31 markus 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 extern int use_privsep;
32 #define PRIVSEP(x) (use_privsep ? mm_##x : x)
33 
34 enum mm_keytype { MM_NOKEY, MM_HOSTKEY, MM_USERKEY };
35 
36 struct ssh;
37 struct monitor;
38 struct Authctxt;
39 struct sshkey;
40 struct sshauthopt;
41 struct sshkey_sig_details;
42 
43 void mm_log_handler(LogLevel, int, const char *, void *);
44 int mm_is_monitor(void);
45 #ifdef WITH_OPENSSL
46 DH *mm_choose_dh(int, int, int);
47 #endif
48 int mm_sshkey_sign(struct ssh *, struct sshkey *, u_char **, size_t *,
49  const u_char *, size_t, const char *, const char *,
50  const char *, u_int compat);
51 void mm_inform_authserv(char *, char *);
52 #ifdef WITH_SELINUX
53 void mm_inform_authrole(char *);
54 #endif
55 struct passwd *mm_getpwnamallow(struct ssh *, const char *);
56 char *mm_auth2_read_banner(void);
57 int mm_auth_password(struct ssh *, char *);
58 int mm_key_allowed(enum mm_keytype, const char *, const char *, struct sshkey *,
59  int, struct sshauthopt **);
60 int mm_user_key_allowed(struct ssh *, struct passwd *, struct sshkey *, int,
61  struct sshauthopt **);
62 int mm_hostbased_key_allowed(struct ssh *, struct passwd *, const char *,
63  const char *, struct sshkey *);
64 int mm_hostbased_key_verify(struct ssh *, const struct sshkey *, const u_char *, size_t,
65  const u_char *, size_t, const char *, u_int, struct sshkey_sig_details **);
66 int mm_user_key_verify(struct ssh*, const struct sshkey *, const u_char *, size_t,
67  const u_char *, size_t, const char *, u_int, struct sshkey_sig_details **);
68 
69 #ifdef GSSAPI
70 OM_uint32 mm_ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
71 OM_uint32 mm_ssh_gssapi_accept_ctx(Gssctxt *,
72  gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
73 int mm_ssh_gssapi_userok(char *user, struct passwd *, int kex);
74 OM_uint32 mm_ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
75 OM_uint32 mm_ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
76 int mm_ssh_gssapi_localname(char **user);
77 OM_uint32 mm_gss_indicate_mechs(OM_uint32 *minor_status,
78  gss_OID_set *mech_set);
79 char *mm_ssh_gssapi_last_error(Gssctxt *ctxt, OM_uint32 *maj, OM_uint32 *min);
80 int mm_ssh_gssapi_update_creds(ssh_gssapi_ccache *);
81 #endif
82 
83 #ifdef USE_PAM
84 void mm_start_pam(struct ssh *ssh);
85 u_int mm_do_pam_account(void);
86 void *mm_sshpam_init_ctx(struct Authctxt *);
87 int mm_sshpam_query(void *, char **, char **, u_int *, char ***, u_int **);
88 int mm_sshpam_respond(void *, u_int, char **);
89 void mm_sshpam_free_ctx(void *);
90 #endif
91 
92 #ifdef SSH_AUDIT_EVENTS
93 #include "audit.h"
94 void mm_audit_event(struct ssh *, ssh_audit_event_t);
95 int mm_audit_run_command(struct ssh *ssh, const char *);
96 void mm_audit_end_command(struct ssh *ssh, int, const char *);
97 void mm_audit_unsupported_body(struct ssh *, int);
98 void mm_audit_kex_body(struct ssh *, int, char *, char *, char *, char *, pid_t, uid_t);
99 void mm_audit_session_key_free_body(struct ssh *, int, pid_t, uid_t);
100 void mm_audit_destroy_sensitive_data(struct ssh *, const char *, pid_t, uid_t);
101 int mm_forward_audit_messages(int);
102 void mm_set_monitor_pipe(int);
103 #endif
104 
105 struct Session;
106 void mm_terminate(void);
107 int mm_pty_allocate(int *, int *, char *, size_t);
108 void mm_session_pty_cleanup2(struct Session *);
109 
110 /* Key export functions */
111 struct newkeys *mm_newkeys_from_blob(u_char *, int);
112 int mm_newkeys_to_blob(int, u_char **, u_int *);
113 
114 void mm_send_keystate(struct ssh *, struct monitor*);
115 
116 /* bsdauth */
117 int mm_bsdauth_query(void *, char **, char **, u_int *, char ***, u_int **);
118 int mm_bsdauth_respond(void *, u_int, char **);
119 
120 #endif /* _MM_WRAP_H_ */
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