Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids. Most
[dragonfly.git] / crypto / openssh / auth.h
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1/* $OpenBSD: auth.h,v 1.41 2002/09/26 11:38:43 markus Exp $ */
2/* $FreeBSD: src/crypto/openssh/auth.h,v 1.1.1.1.2.7 2003/04/07 09:56:46 des Exp $ */
1de703da 3/* $DragonFly: src/crypto/openssh/Attic/auth.h,v 1.2 2003/06/17 04:24:36 dillon Exp $ */
984263bc
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4
5/*
6 * Copyright (c) 2000 Markus Friedl. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29
30#ifndef AUTH_H
31#define AUTH_H
32
33#include "key.h"
34#include "hostfile.h"
35#include <openssl/rsa.h>
36
37#ifdef HAVE_LOGIN_CAP
38#include <login_cap.h>
39#endif
40#ifdef BSD_AUTH
41#include <bsd_auth.h>
42#endif
43#ifdef KRB5
44#include <krb5.h>
45#endif
46
47typedef struct Authctxt Authctxt;
48typedef struct Authmethod Authmethod;
49typedef struct KbdintDevice KbdintDevice;
50
51struct Authctxt {
52 int success;
53 int postponed;
54 int valid;
55 int attempt;
56 int failures;
57 char *user;
58 char *service;
59 struct passwd *pw;
60 char *style;
61 void *kbdintctxt;
62#ifdef BSD_AUTH
63 auth_session_t *as;
64#endif
65#ifdef KRB4
66 char *krb4_ticket_file;
67#endif
68#ifdef KRB5
69 krb5_context krb5_ctx;
70 krb5_auth_context krb5_auth_ctx;
71 krb5_ccache krb5_fwd_ccache;
72 krb5_principal krb5_user;
73 char *krb5_ticket_file;
74#endif
75};
76
77struct Authmethod {
78 char *name;
79 int (*userauth)(Authctxt *authctxt);
80 int *enabled;
81};
82
83/*
84 * Keyboard interactive device:
85 * init_ctx returns: non NULL upon success
86 * query returns: 0 - success, otherwise failure
87 * respond returns: 0 - success, 1 - need further interaction,
88 * otherwise - failure
89 */
90struct KbdintDevice
91{
92 const char *name;
93 void* (*init_ctx)(Authctxt*);
94 int (*query)(void *ctx, char **name, char **infotxt,
95 u_int *numprompts, char ***prompts, u_int **echo_on);
96 int (*respond)(void *ctx, u_int numresp, char **responses);
97 void (*free_ctx)(void *ctx);
98};
99
100int auth_rhosts(struct passwd *, const char *);
101int
102auth_rhosts2(struct passwd *, const char *, const char *, const char *);
103
104int auth_rhosts_rsa(struct passwd *, char *, Key *);
105int auth_password(Authctxt *, const char *);
106int auth_rsa(struct passwd *, BIGNUM *);
107int auth_rsa_challenge_dialog(Key *);
108BIGNUM *auth_rsa_generate_challenge(Key *);
109int auth_rsa_verify_response(Key *, BIGNUM *, u_char[]);
110int auth_rsa_key_allowed(struct passwd *, BIGNUM *, Key **);
111
112int auth_rhosts_rsa_key_allowed(struct passwd *, char *, char *, Key *);
113int hostbased_key_allowed(struct passwd *, const char *, char *, Key *);
114int user_key_allowed(struct passwd *, Key *);
115
116#ifdef KRB4
117#include <krb.h>
118int auth_krb4(Authctxt *, KTEXT, char **, KTEXT);
119int auth_krb4_password(Authctxt *, const char *);
120void krb4_cleanup_proc(void *);
121
122#ifdef AFS
123#include <kafs.h>
124int auth_krb4_tgt(Authctxt *, const char *);
125int auth_afs_token(Authctxt *, const char *);
126#endif /* AFS */
127
128#endif /* KRB4 */
129
130#ifdef KRB5
131int auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client, krb5_data *);
132int auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt);
133int auth_krb5_password(Authctxt *authctxt, const char *password);
134void krb5_cleanup_proc(void *authctxt);
135#endif /* KRB5 */
136
137#include "auth-pam.h"
138#include "auth2-pam.h"
139
140Authctxt *do_authentication(void);
141Authctxt *do_authentication2(void);
142
143Authctxt *authctxt_new(void);
144void auth_log(Authctxt *, int, char *, char *);
145void userauth_finish(Authctxt *, int, char *);
146int auth_root_allowed(char *);
147
148char *auth2_read_banner(void);
149
150void privsep_challenge_enable(void);
151
152int auth2_challenge(Authctxt *, char *);
153void auth2_challenge_stop(Authctxt *);
154int bsdauth_query(void *, char **, char **, u_int *, char ***, u_int **);
155int bsdauth_respond(void *, u_int, char **);
156int skey_query(void *, char **, char **, u_int *, char ***, u_int **);
157int skey_respond(void *, u_int, char **);
158
159int allowed_user(struct passwd *);
160struct passwd * getpwnamallow(const char *user);
161
162char *get_challenge(Authctxt *);
163int verify_response(Authctxt *, const char *);
164void abandon_challenge_response(Authctxt *);
165
166struct passwd * auth_get_user(void);
167
168char *expand_filename(const char *, struct passwd *);
169char *authorized_keys_file(struct passwd *);
170char *authorized_keys_file2(struct passwd *);
171
172int
173secure_filename(FILE *, const char *, struct passwd *, char *, size_t);
174
175HostStatus
176check_key_in_hostfiles(struct passwd *, Key *, const char *,
177 const char *, const char *);
178
179/* hostkey handling */
180Key *get_hostkey_by_index(int);
181Key *get_hostkey_by_type(int);
182int get_hostkey_index(Key *);
183int ssh1_session_key(BIGNUM *);
184
185/* debug messages during authentication */
186void auth_debug_add(const char *fmt,...) __attribute__((format(printf, 1, 2)));
187void auth_debug_send(void);
188void auth_debug_reset(void);
189
190#define AUTH_FAIL_MAX 6
191#define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2)
192#define AUTH_FAIL_MSG "Too many authentication failures for %.100s"
193
194#ifdef SKEY
195#ifdef OPIE
196#define SKEY_PROMPT "\nOPIE Password: "
197#else
198#define SKEY_PROMPT "\nS/Key Password: "
199#endif
200#endif
201
202#endif