auth.h revision 92559
192559Sdes/* $OpenBSD: auth.h,v 1.29 2002/03/04 17:27:39 stevesk Exp $ */ 292559Sdes/* $FreeBSD: head/crypto/openssh/auth.h 92559 2002-03-18 10:09:43Z des $ */ 392559Sdes 465668Skris/* 565668Skris * Copyright (c) 2000 Markus Friedl. All rights reserved. 665668Skris * 765668Skris * Redistribution and use in source and binary forms, with or without 865668Skris * modification, are permitted provided that the following conditions 965668Skris * are met: 1065668Skris * 1. Redistributions of source code must retain the above copyright 1165668Skris * notice, this list of conditions and the following disclaimer. 1265668Skris * 2. Redistributions in binary form must reproduce the above copyright 1365668Skris * notice, this list of conditions and the following disclaimer in the 1465668Skris * documentation and/or other materials provided with the distribution. 1565668Skris * 1665668Skris * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1765668Skris * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1865668Skris * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 1965668Skris * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2065668Skris * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2165668Skris * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2265668Skris * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2365668Skris * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2465668Skris * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2565668Skris * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2669587Sgreen * 2765668Skris */ 2892559Sdes 2960573Skris#ifndef AUTH_H 3060573Skris#define AUTH_H 3160573Skris 3292559Sdes#include "key.h" 3392559Sdes#include "hostfile.h" 3476259Sgreen#include <openssl/rsa.h> 3576259Sgreen 3676259Sgreen#ifdef HAVE_LOGIN_CAP 3776259Sgreen#include <login_cap.h> 3876259Sgreen#endif 3976259Sgreen#ifdef BSD_AUTH 4076259Sgreen#include <bsd_auth.h> 4176259Sgreen#endif 4292559Sdes#ifdef KRB5 4392559Sdes#include <krb5.h> 4492559Sdes#endif 4576259Sgreen 4669587Sgreentypedef struct Authctxt Authctxt; 4792559Sdestypedef struct KbdintDevice KbdintDevice; 4892559Sdes 4969587Sgreenstruct Authctxt { 5092559Sdes int success; 5192559Sdes int postponed; 5292559Sdes int valid; 5392559Sdes int attempt; 5492559Sdes int failures; 5592559Sdes char *user; 5692559Sdes char *service; 5792559Sdes struct passwd *pw; 5892559Sdes char *style; 5992559Sdes void *kbdintctxt; 6076259Sgreen#ifdef BSD_AUTH 6192559Sdes auth_session_t *as; 6276259Sgreen#endif 6392559Sdes#ifdef KRB4 6492559Sdes char *krb4_ticket_file; 6592559Sdes#endif 6692559Sdes#ifdef KRB5 6792559Sdes krb5_context krb5_ctx; 6892559Sdes krb5_auth_context krb5_auth_ctx; 6992559Sdes krb5_ccache krb5_fwd_ccache; 7092559Sdes krb5_principal krb5_user; 7192559Sdes char *krb5_ticket_file; 7292559Sdes#endif 7369587Sgreen}; 7469587Sgreen 7576259Sgreen/* 7692559Sdes * Keyboard interactive device: 7792559Sdes * init_ctx returns: non NULL upon success 7892559Sdes * query returns: 0 - success, otherwise failure 7992559Sdes * respond returns: 0 - success, 1 - need further interaction, 8092559Sdes * otherwise - failure 8176259Sgreen */ 8292559Sdesstruct KbdintDevice 8392559Sdes{ 8492559Sdes const char *name; 8592559Sdes void* (*init_ctx)(Authctxt*); 8692559Sdes int (*query)(void *ctx, char **name, char **infotxt, 8792559Sdes u_int *numprompts, char ***prompts, u_int **echo_on); 8892559Sdes int (*respond)(void *ctx, u_int numresp, char **responses); 8992559Sdes void (*free_ctx)(void *ctx); 9092559Sdes}; 9176259Sgreen 9292559Sdesint auth_rhosts(struct passwd *, const char *); 9376259Sgreenint 9492559Sdesauth_rhosts2(struct passwd *, const char *, const char *, const char *); 9576259Sgreen 9692559Sdesint auth_rhosts_rsa(struct passwd *, const char *, Key *); 9792559Sdesint auth_password(Authctxt *, const char *); 9892559Sdesint auth_rsa(struct passwd *, BIGNUM *); 9992559Sdesint auth_rsa_challenge_dialog(RSA *); 10076259Sgreen 10178263Smarkm#ifdef KRB4 10278263Smarkm#include <krb.h> 10392559Sdesint auth_krb4(Authctxt *, KTEXT, char **); 10492559Sdesint auth_krb4_password(Authctxt *, const char *); 10592559Sdesvoid krb4_cleanup_proc(void *); 10676262Sgreen 10776259Sgreen#ifdef AFS 10876259Sgreen#include <kafs.h> 10992559Sdesint auth_krb4_tgt(Authctxt *, const char *); 11092559Sdesint auth_afs_token(Authctxt *, const char *); 11192559Sdes#endif /* AFS */ 11276259Sgreen 11392559Sdes#endif /* KRB4 */ 11476259Sgreen 11592559Sdes#ifdef KRB5 11692559Sdesint auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client); 11792559Sdesint auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt); 11892559Sdesint auth_krb5_password(Authctxt *authctxt, const char *password); 11992559Sdesvoid krb5_cleanup_proc(void *authctxt); 12092559Sdes#endif /* KRB5 */ 12176259Sgreen 12260573Skrisvoid do_authentication(void); 12360573Skrisvoid do_authentication2(void); 12460573Skris 12576259SgreenAuthctxt *authctxt_new(void); 12692559Sdesvoid auth_log(Authctxt *, int, char *, char *); 12792559Sdesvoid userauth_finish(Authctxt *, int, char *); 12892559Sdesint auth_root_allowed(char *); 12960573Skris 13092559Sdesint auth2_challenge(Authctxt *, char *); 13192559Sdesvoid auth2_challenge_stop(Authctxt *); 13260573Skris 13392559Sdesint allowed_user(struct passwd *); 13476259Sgreen 13592559Sdeschar *get_challenge(Authctxt *); 13692559Sdesint verify_response(Authctxt *, const char *); 13776259Sgreen 13869587Sgreenstruct passwd * auth_get_user(void); 13969587Sgreen 14092559Sdeschar *expand_filename(const char *, struct passwd *); 14192559Sdeschar *authorized_keys_file(struct passwd *); 14292559Sdeschar *authorized_keys_file2(struct passwd *); 14392559Sdes 14492559Sdesint 14592559Sdessecure_filename(FILE *, const char *, struct passwd *, char *, size_t); 14692559Sdes 14792559SdesHostStatus 14892559Sdescheck_key_in_hostfiles(struct passwd *, Key *, const char *, 14992559Sdes const char *, const char *); 15092559Sdes 15160573Skris#define AUTH_FAIL_MAX 6 15260573Skris#define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2) 15360573Skris#define AUTH_FAIL_MSG "Too many authentication failures for %.100s" 15460573Skris 15560573Skris#endif 156