1/* $OpenBSD: auth-skey.c,v 1.27 2007/01/21 01:41:54 stevesk Exp $ */ 2/* 3 * Copyright (c) 2001 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#ifdef SKEY 29 30#include <sys/types.h> 31 32#include <pwd.h> 33#include <stdio.h> 34 35#include <skey.h> 36 37#include "xmalloc.h" 38#include "hostfile.h" 39#include "auth.h" 40#include "ssh-gss.h" 41#include "log.h" 42#include "monitor_wrap.h" 43 44static void * 45skey_init_ctx(Authctxt *authctxt) 46{ 47 return authctxt; 48} 49 50int 51skey_query(void *ctx, char **name, char **infotxt, 52 u_int* numprompts, char ***prompts, u_int **echo_on) 53{ 54 Authctxt *authctxt = ctx; 55 char challenge[1024]; 56 struct skey skey; 57 58 if (_compat_skeychallenge(&skey, authctxt->user, challenge, 59 sizeof(challenge)) == -1) 60 return -1; 61 62 *name = xstrdup(""); 63 *infotxt = xstrdup(""); 64 *numprompts = 1; 65 *prompts = xcalloc(*numprompts, sizeof(char *)); 66 *echo_on = xcalloc(*numprompts, sizeof(u_int)); 67 68 xasprintf(*prompts, "%s%s", challenge, SKEY_PROMPT); 69 70 return 0; 71} 72 73int 74skey_respond(void *ctx, u_int numresponses, char **responses) 75{ 76 Authctxt *authctxt = ctx; 77 78 if (authctxt->valid && 79 numresponses == 1 && 80 skey_haskey(authctxt->pw->pw_name) == 0 && 81 skey_passcheck(authctxt->pw->pw_name, responses[0]) != -1) 82 return 0; 83 return -1; 84} 85 86static void 87skey_free_ctx(void *ctx) 88{ 89 /* we don't have a special context */ 90} 91 92KbdintDevice skey_device = { 93 "skey", 94 skey_init_ctx, 95 skey_query, 96 skey_respond, 97 skey_free_ctx 98}; 99 100KbdintDevice mm_skey_device = { 101 "skey", 102 skey_init_ctx, 103 mm_skey_query, 104 mm_skey_respond, 105 skey_free_ctx 106}; 107#endif /* SKEY */ 108