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3c0ef626 | 1 | /* |
2 | * Copyright (c) 2000 Markus Friedl. All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * 1. Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * 2. Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
12 | * | |
13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 | * | |
24 | * $OpenBSD: auth.h,v 1.22 2001/06/26 17:27:22 markus Exp $ | |
25 | */ | |
26 | #ifndef AUTH_H | |
27 | #define AUTH_H | |
28 | ||
29 | #include "key.h" | |
30 | #include "hostfile.h" | |
31 | #include <openssl/rsa.h> | |
32 | ||
33 | #ifdef HAVE_LOGIN_CAP | |
34 | #include <login_cap.h> | |
35 | #endif | |
36 | #ifdef BSD_AUTH | |
37 | #include <bsd_auth.h> | |
38 | #endif | |
39 | #ifdef KRB5 | |
40 | #include <krb5.h> | |
41 | #endif | |
42 | ||
43 | typedef struct Authctxt Authctxt; | |
44 | typedef struct KbdintDevice KbdintDevice; | |
45 | ||
46 | struct Authctxt { | |
47 | int success; | |
48 | int postponed; | |
49 | int valid; | |
50 | int attempt; | |
51 | int failures; | |
52 | char *user; | |
53 | char *service; | |
54 | struct passwd *pw; | |
55 | char *style; | |
56 | void *kbdintctxt; | |
57 | #ifdef BSD_AUTH | |
58 | auth_session_t *as; | |
59 | #endif | |
60 | #ifdef KRB4 | |
61 | char *krb4_ticket_file; | |
62 | #endif | |
63 | #ifdef KRB5 | |
64 | krb5_context krb5_ctx; | |
65 | krb5_auth_context krb5_auth_ctx; | |
66 | krb5_ccache krb5_fwd_ccache; | |
67 | krb5_principal krb5_user; | |
68 | char *krb5_ticket_file; | |
69 | #endif | |
70 | }; | |
71 | ||
72 | /* | |
73 | * Keyboard interactive device: | |
74 | * init_ctx returns: non NULL upon success | |
75 | * query returns: 0 - success, otherwise failure | |
76 | * respond returns: 0 - success, 1 - need further interaction, | |
77 | * otherwise - failure | |
78 | */ | |
79 | struct KbdintDevice | |
80 | { | |
81 | const char *name; | |
82 | void* (*init_ctx) __P((Authctxt*)); | |
83 | int (*query) __P((void *ctx, char **name, char **infotxt, | |
84 | u_int *numprompts, char ***prompts, | |
85 | u_int **echo_on)); | |
86 | int (*respond) __P((void *ctx, u_int numresp, char **responses)); | |
87 | void (*free_ctx) __P((void *ctx)); | |
88 | }; | |
89 | ||
90 | int auth_rhosts(struct passwd *, const char *); | |
91 | int | |
92 | auth_rhosts2(struct passwd *, const char *, const char *, const char *); | |
93 | ||
94 | int auth_rhosts_rsa(struct passwd *, const char *, RSA *); | |
95 | int auth_password(Authctxt *, const char *); | |
96 | int auth_rsa(struct passwd *, BIGNUM *); | |
97 | int auth_rsa_read_key(char **, u_int *, BIGNUM *, BIGNUM *); | |
98 | int auth_rsa_challenge_dialog(RSA *); | |
99 | ||
100 | #ifdef KRB4 | |
101 | #include <krb.h> | |
102 | int auth_krb4(Authctxt *, KTEXT, char **); | |
103 | int auth_krb4_password(Authctxt *, const char *); | |
104 | void krb4_cleanup_proc(void *); | |
105 | ||
106 | #ifdef AFS | |
107 | #include <kafs.h> | |
108 | int auth_krb4_tgt(Authctxt *, const char *); | |
109 | int auth_afs_token(Authctxt *, const char *); | |
110 | #endif /* AFS */ | |
111 | ||
112 | #endif /* KRB4 */ | |
113 | ||
114 | #ifdef KRB5 | |
115 | int auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client); | |
116 | int auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt); | |
117 | int auth_krb5_password(Authctxt *authctxt, const char *password); | |
118 | void krb5_cleanup_proc(void *authctxt); | |
119 | #endif /* KRB5 */ | |
120 | ||
121 | #include "auth-pam.h" | |
122 | #include "auth2-pam.h" | |
123 | ||
124 | void do_authentication(void); | |
125 | void do_authentication2(void); | |
126 | ||
127 | Authctxt *authctxt_new(void); | |
128 | void auth_log(Authctxt *, int, char *, char *); | |
129 | void userauth_finish(Authctxt *, int, char *); | |
130 | int auth_root_allowed(char *); | |
131 | ||
132 | int auth2_challenge(Authctxt *, char *); | |
133 | ||
134 | int allowed_user(struct passwd *); | |
135 | ||
136 | char *get_challenge(Authctxt *); | |
137 | int verify_response(Authctxt *, const char *); | |
138 | ||
139 | struct passwd * auth_get_user(void); | |
140 | ||
141 | char *expand_filename(const char *, struct passwd *); | |
142 | char *authorized_keys_file(struct passwd *); | |
143 | char *authorized_keys_file2(struct passwd *); | |
144 | ||
145 | int | |
146 | secure_filename(FILE *, const char *, struct passwd *, char *, size_t); | |
147 | ||
148 | HostStatus | |
149 | check_key_in_hostfiles(struct passwd *, Key *, const char *, | |
150 | const char *, const char *); | |
151 | ||
152 | #define AUTH_FAIL_MAX 6 | |
153 | #define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2) | |
154 | #define AUTH_FAIL_MSG "Too many authentication failures for %.100s" | |
155 | ||
156 | #endif |