1 /* $OpenBSD: auth.h,v 1.29 2002/03/04 17:27:39 stevesk Exp $ */
4 * Copyright (c) 2000 Markus Friedl. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #include <openssl/rsa.h>
36 #include <login_cap.h>
45 typedef struct Authctxt Authctxt;
46 typedef struct KbdintDevice KbdintDevice;
63 char *krb4_ticket_file;
66 krb5_context krb5_ctx;
67 krb5_auth_context krb5_auth_ctx;
68 krb5_ccache krb5_fwd_ccache;
69 krb5_principal krb5_user;
70 char *krb5_ticket_file;
76 * Keyboard interactive device:
77 * init_ctx returns: non NULL upon success
78 * query returns: 0 - success, otherwise failure
79 * respond returns: 0 - success, 1 - need further interaction,
85 void* (*init_ctx)(Authctxt*);
86 int (*query)(void *ctx, char **name, char **infotxt,
87 u_int *numprompts, char ***prompts, u_int **echo_on);
88 int (*respond)(void *ctx, u_int numresp, char **responses);
89 void (*free_ctx)(void *ctx);
92 int auth_rhosts(struct passwd *, const char *);
94 auth_rhosts2(struct passwd *, const char *, const char *, const char *);
96 int auth_rhosts_rsa(struct passwd *, const char *, Key *);
97 int auth_password(Authctxt *, const char *);
98 int auth_rsa(struct passwd *, BIGNUM *);
99 int auth_rsa_challenge_dialog(RSA *);
103 int auth_krb4(Authctxt *, KTEXT, char **);
104 int auth_krb4_password(Authctxt *, const char *);
105 void krb4_cleanup_proc(void *);
109 int auth_krb4_tgt(Authctxt *, const char *);
110 int auth_afs_token(Authctxt *, const char *);
116 int auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client);
117 int auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt);
118 int auth_krb5_password(Authctxt *authctxt, const char *password);
119 void krb5_cleanup_proc(void *authctxt);
122 #include "auth-pam.h"
123 #include "auth2-pam.h"
125 void do_authentication(void);
126 void do_authentication2(void);
128 Authctxt *authctxt_new(void);
129 void auth_log(Authctxt *, int, char *, char *);
130 void userauth_finish(Authctxt *, int, char *);
131 int auth_root_allowed(char *);
133 int auth2_challenge(Authctxt *, char *);
134 void auth2_challenge_stop(Authctxt *);
136 int allowed_user(struct passwd *);
138 char *get_challenge(Authctxt *);
139 int verify_response(Authctxt *, const char *);
141 struct passwd * auth_get_user(void);
143 char *expand_filename(const char *, struct passwd *);
144 char *authorized_keys_file(struct passwd *);
145 char *authorized_keys_file2(struct passwd *);
148 secure_filename(FILE *, const char *, struct passwd *, char *, size_t);
151 check_key_in_hostfiles(struct passwd *, Key *, const char *,
152 const char *, const char *);
154 #define AUTH_FAIL_MAX 6
155 #define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2)
156 #define AUTH_FAIL_MSG "Too many authentication failures for %.100s"