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 $ */
3 /* $DragonFly: src/crypto/openssh/Attic/auth.h,v 1.2 2003/06/17 04:24:36 dillon Exp $ */
6 * Copyright (c) 2000 Markus Friedl. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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.
35 #include <openssl/rsa.h>
38 #include <login_cap.h>
47 typedef struct Authctxt Authctxt;
48 typedef struct Authmethod Authmethod;
49 typedef struct KbdintDevice KbdintDevice;
66 char *krb4_ticket_file;
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;
79 int (*userauth)(Authctxt *authctxt);
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,
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);
100 int auth_rhosts(struct passwd *, const char *);
102 auth_rhosts2(struct passwd *, const char *, const char *, const char *);
104 int auth_rhosts_rsa(struct passwd *, char *, Key *);
105 int auth_password(Authctxt *, const char *);
106 int auth_rsa(struct passwd *, BIGNUM *);
107 int auth_rsa_challenge_dialog(Key *);
108 BIGNUM *auth_rsa_generate_challenge(Key *);
109 int auth_rsa_verify_response(Key *, BIGNUM *, u_char[]);
110 int auth_rsa_key_allowed(struct passwd *, BIGNUM *, Key **);
112 int auth_rhosts_rsa_key_allowed(struct passwd *, char *, char *, Key *);
113 int hostbased_key_allowed(struct passwd *, const char *, char *, Key *);
114 int user_key_allowed(struct passwd *, Key *);
118 int auth_krb4(Authctxt *, KTEXT, char **, KTEXT);
119 int auth_krb4_password(Authctxt *, const char *);
120 void krb4_cleanup_proc(void *);
124 int auth_krb4_tgt(Authctxt *, const char *);
125 int auth_afs_token(Authctxt *, const char *);
131 int auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client, krb5_data *);
132 int auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt);
133 int auth_krb5_password(Authctxt *authctxt, const char *password);
134 void krb5_cleanup_proc(void *authctxt);
137 #include "auth-pam.h"
138 #include "auth2-pam.h"
140 Authctxt *do_authentication(void);
141 Authctxt *do_authentication2(void);
143 Authctxt *authctxt_new(void);
144 void auth_log(Authctxt *, int, char *, char *);
145 void userauth_finish(Authctxt *, int, char *);
146 int auth_root_allowed(char *);
148 char *auth2_read_banner(void);
150 void privsep_challenge_enable(void);
152 int auth2_challenge(Authctxt *, char *);
153 void auth2_challenge_stop(Authctxt *);
154 int bsdauth_query(void *, char **, char **, u_int *, char ***, u_int **);
155 int bsdauth_respond(void *, u_int, char **);
156 int skey_query(void *, char **, char **, u_int *, char ***, u_int **);
157 int skey_respond(void *, u_int, char **);
159 int allowed_user(struct passwd *);
160 struct passwd * getpwnamallow(const char *user);
162 char *get_challenge(Authctxt *);
163 int verify_response(Authctxt *, const char *);
164 void abandon_challenge_response(Authctxt *);
166 struct passwd * auth_get_user(void);
168 char *expand_filename(const char *, struct passwd *);
169 char *authorized_keys_file(struct passwd *);
170 char *authorized_keys_file2(struct passwd *);
173 secure_filename(FILE *, const char *, struct passwd *, char *, size_t);
176 check_key_in_hostfiles(struct passwd *, Key *, const char *,
177 const char *, const char *);
179 /* hostkey handling */
180 Key *get_hostkey_by_index(int);
181 Key *get_hostkey_by_type(int);
182 int get_hostkey_index(Key *);
183 int ssh1_session_key(BIGNUM *);
185 /* debug messages during authentication */
186 void auth_debug_add(const char *fmt,...) __attribute__((format(printf, 1, 2)));
187 void auth_debug_send(void);
188 void auth_debug_reset(void);
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"
196 #define SKEY_PROMPT "\nOPIE Password: "
198 #define SKEY_PROMPT "\nS/Key Password: "