156 lines
5.0 KiB
C
156 lines
5.0 KiB
C
/*
|
|
* Copyright (c) 2000 Markus Friedl. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $OpenBSD: auth.h,v 1.15 2001/04/12 19:15:24 markus Exp $
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef AUTH_H
|
|
#define AUTH_H
|
|
|
|
#include <openssl/rsa.h>
|
|
|
|
#ifdef HAVE_LOGIN_CAP
|
|
#include <login_cap.h>
|
|
#endif
|
|
#ifdef BSD_AUTH
|
|
#include <bsd_auth.h>
|
|
#endif
|
|
|
|
typedef struct Authctxt Authctxt;
|
|
struct Authctxt {
|
|
int success;
|
|
int postponed;
|
|
int valid;
|
|
int attempt;
|
|
int failures;
|
|
char *user;
|
|
char *service;
|
|
struct passwd *pw;
|
|
char *style;
|
|
#ifdef BSD_AUTH
|
|
auth_session_t *as;
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
* Tries to authenticate the user using the .rhosts file. Returns true if
|
|
* authentication succeeds. If ignore_rhosts is non-zero, this will not
|
|
* consider .rhosts and .shosts (/etc/hosts.equiv will still be used).
|
|
*/
|
|
int auth_rhosts(struct passwd * pw, const char *client_user);
|
|
|
|
/* extended interface similar to auth_rhosts() */
|
|
int
|
|
auth_rhosts2(struct passwd *pw, const char *client_user, const char *hostname,
|
|
const char *ipaddr);
|
|
|
|
/*
|
|
* Tries to authenticate the user using the .rhosts file and the host using
|
|
* its host key. Returns true if authentication succeeds.
|
|
*/
|
|
int
|
|
auth_rhosts_rsa(struct passwd * pw, const char *client_user, RSA* client_host_key);
|
|
|
|
/*
|
|
* Tries to authenticate the user using password. Returns true if
|
|
* authentication succeeds.
|
|
*/
|
|
int auth_password(Authctxt *authctxt, const char *password);
|
|
|
|
/*
|
|
* Performs the RSA authentication dialog with the client. This returns 0 if
|
|
* the client could not be authenticated, and 1 if authentication was
|
|
* successful. This may exit if there is a serious protocol violation.
|
|
*/
|
|
int auth_rsa(struct passwd * pw, BIGNUM * client_n);
|
|
|
|
/*
|
|
* Parses an RSA key (number of bits, e, n) from a string. Moves the pointer
|
|
* over the key. Skips any whitespace at the beginning and at end.
|
|
*/
|
|
int auth_rsa_read_key(char **cpp, u_int *bitsp, BIGNUM * e, BIGNUM * n);
|
|
|
|
/*
|
|
* Performs the RSA authentication challenge-response dialog with the client,
|
|
* and returns true (non-zero) if the client gave the correct answer to our
|
|
* challenge; returns zero if the client gives a wrong answer.
|
|
*/
|
|
int auth_rsa_challenge_dialog(RSA *pk);
|
|
|
|
#ifdef KRB4
|
|
#include <krb.h>
|
|
#endif /* KRB4 */
|
|
#ifdef KRB5
|
|
#include <krb5.h>
|
|
int auth_krb5(); /* XXX Doplnit prototypy */
|
|
int auth_krb5_tgt();
|
|
int krb5_init();
|
|
void krb5_cleanup_proc(void *ignore);
|
|
int auth_krb5_password(struct passwd *pw, const char *password);
|
|
#endif /* KRB5 */
|
|
|
|
#ifdef KRB4
|
|
#include <krb.h>
|
|
/*
|
|
* Performs Kerberos v4 mutual authentication with the client. This returns 0
|
|
* if the client could not be authenticated, and 1 if authentication was
|
|
* successful. This may exit if there is a serious protocol violation.
|
|
*/
|
|
int auth_krb4(const char *server_user, KTEXT auth, char **client);
|
|
int krb4_init(uid_t uid);
|
|
void krb4_cleanup_proc(void *ignore);
|
|
int auth_krb4_password(struct passwd * pw, const char *password);
|
|
|
|
#ifdef AFS
|
|
#include <kafs.h>
|
|
|
|
/* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
|
|
int auth_kerberos_tgt(struct passwd * pw, const char *string);
|
|
int auth_afs_token(struct passwd * pw, const char *token_string);
|
|
#endif /* AFS */
|
|
|
|
#endif /* KRB4 */
|
|
|
|
void do_authentication(void);
|
|
void do_authentication2(void);
|
|
|
|
Authctxt *authctxt_new(void);
|
|
void auth_log(Authctxt *authctxt, int authenticated, char *method, char *info);
|
|
void userauth_finish(Authctxt *authctxt, int authenticated, char *method);
|
|
int auth_root_allowed(char *method);
|
|
|
|
int auth2_challenge(Authctxt *authctxt, char *devs);
|
|
|
|
int allowed_user(struct passwd * pw);
|
|
|
|
char *get_challenge(Authctxt *authctxt, char *devs);
|
|
int verify_response(Authctxt *authctxt, char *response);
|
|
|
|
struct passwd * auth_get_user(void);
|
|
|
|
#define AUTH_FAIL_MAX 6
|
|
#define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2)
|
|
#define AUTH_FAIL_MSG "Too many authentication failures for %.100s"
|
|
|
|
#endif
|