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      1 /* $OpenBSD: auth2-kbdint.c,v 1.7 2014/07/15 15:54:14 millert Exp $ */
      2 /*
      3  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "includes.h"
     27 
     28 #include <sys/types.h>
     29 
     30 #include <stdarg.h>
     31 
     32 #include "xmalloc.h"
     33 #include "packet.h"
     34 #include "key.h"
     35 #include "hostfile.h"
     36 #include "auth.h"
     37 #include "log.h"
     38 #include "buffer.h"
     39 #include "misc.h"
     40 #include "servconf.h"
     41 
     42 /* import */
     43 extern ServerOptions options;
     44 
     45 static int
     46 userauth_kbdint(Authctxt *authctxt)
     47 {
     48 	int authenticated = 0;
     49 	char *lang, *devs;
     50 
     51 	lang = packet_get_string(NULL);
     52 	devs = packet_get_string(NULL);
     53 	packet_check_eom();
     54 
     55 	debug("keyboard-interactive devs %s", devs);
     56 
     57 	if (options.challenge_response_authentication)
     58 		authenticated = auth2_challenge(authctxt, devs);
     59 
     60 	free(devs);
     61 	free(lang);
     62 	return authenticated;
     63 }
     64 
     65 Authmethod method_kbdint = {
     66 	"keyboard-interactive",
     67 	userauth_kbdint,
     68 	&options.kbd_interactive_authentication
     69 };
     70