2 * Copyright (c) 2000 Markus Friedl. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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.
24 * $OpenBSD: auth.h,v 1.15 2001/04/12 19:15:24 markus Exp $
29 #include <openssl/rsa.h>
32 #include <login_cap.h>
38 typedef struct Authctxt Authctxt;
55 * Tries to authenticate the user using the .rhosts file. Returns true if
56 * authentication succeeds. If ignore_rhosts is non-zero, this will not
57 * consider .rhosts and .shosts (/etc/hosts.equiv will still be used).
59 int auth_rhosts(struct passwd * pw, const char *client_user);
61 /* extended interface similar to auth_rhosts() */
63 auth_rhosts2(struct passwd *pw, const char *client_user, const char *hostname,
67 * Tries to authenticate the user using the .rhosts file and the host using
68 * its host key. Returns true if authentication succeeds.
71 auth_rhosts_rsa(struct passwd * pw, const char *client_user, RSA* client_host_key);
74 * Tries to authenticate the user using password. Returns true if
75 * authentication succeeds.
77 int auth_password(Authctxt *authctxt, const char *password);
80 * Performs the RSA authentication dialog with the client. This returns 0 if
81 * the client could not be authenticated, and 1 if authentication was
82 * successful. This may exit if there is a serious protocol violation.
84 int auth_rsa(struct passwd * pw, BIGNUM * client_n);
87 * Parses an RSA key (number of bits, e, n) from a string. Moves the pointer
88 * over the key. Skips any whitespace at the beginning and at end.
90 int auth_rsa_read_key(char **cpp, u_int *bitsp, BIGNUM * e, BIGNUM * n);
93 * Performs the RSA authentication challenge-response dialog with the client,
94 * and returns true (non-zero) if the client gave the correct answer to our
95 * challenge; returns zero if the client gives a wrong answer.
97 int auth_rsa_challenge_dialog(RSA *pk);
102 * Performs Kerberos v4 mutual authentication with the client. This returns 0
103 * if the client could not be authenticated, and 1 if authentication was
104 * successful. This may exit if there is a serious protocol violation.
106 int auth_krb4(const char *server_user, KTEXT auth, char **client);
107 int krb4_init(uid_t uid);
108 void krb4_cleanup_proc(void *ignore);
109 int auth_krb4_password(struct passwd * pw, const char *password);
114 /* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
115 int auth_kerberos_tgt(struct passwd * pw, const char *string);
116 int auth_afs_token(struct passwd * pw, const char *token_string);
121 #include "auth-pam.h"
122 #include "auth2-pam.h"
124 void do_authentication(void);
125 void do_authentication2(void);
127 Authctxt *authctxt_new(void);
128 void auth_log(Authctxt *authctxt, int authenticated, char *method, char *info);
129 void userauth_finish(Authctxt *authctxt, int authenticated, char *method);
130 int auth_root_allowed(char *method);
132 int auth2_challenge(Authctxt *authctxt, char *devs);
134 int allowed_user(struct passwd * pw);
136 char *get_challenge(Authctxt *authctxt, char *devs);
137 int verify_response(Authctxt *authctxt, char *response);
139 struct passwd * auth_get_user(void);
141 #define AUTH_FAIL_MAX 6
142 #define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2)
143 #define AUTH_FAIL_MSG "Too many authentication failures for %.100s"