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