1 /* 2 * Copyright (c) 2001 Markus Friedl. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 #include "includes.h" 25 RCSID("$OpenBSD: auth-skey.c,v 1.20 2002/06/30 21:59:45 deraadt Exp $"); 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #ifdef SKEY 30 31 #include <skey.h> 32 33 #include "xmalloc.h" 34 #include "auth.h" 35 36 static void * 37 skey_init_ctx(Authctxt *authctxt) 38 { 39 return authctxt; 40 } 41 42 int 43 skey_query(void *ctx, char **name, char **infotxt, 44 u_int* numprompts, char ***prompts, u_int **echo_on) 45 { 46 Authctxt *authctxt = ctx; 47 char challenge[1024], *p; 48 int len; 49 struct skey skey; 50 51 if (skeychallenge(&skey, authctxt->user, challenge) == -1) 52 return -1; 53 54 *name = xstrdup(""); 55 *infotxt = xstrdup(""); 56 *numprompts = 1; 57 *prompts = xmalloc(*numprompts * sizeof(char *)); 58 *echo_on = xmalloc(*numprompts * sizeof(u_int)); 59 (*echo_on)[0] = 0; 60 61 len = strlen(challenge) + strlen(SKEY_PROMPT) + 1; 62 p = xmalloc(len); 63 strlcpy(p, challenge, len); 64 strlcat(p, SKEY_PROMPT, len); 65 (*prompts)[0] = p; 66 67 return 0; 68 } 69 70 int 71 skey_respond(void *ctx, u_int numresponses, char **responses) 72 { 73 Authctxt *authctxt = ctx; 74 75 if (authctxt->valid && 76 numresponses == 1 && 77 skey_haskey(authctxt->pw->pw_name) == 0 && 78 skey_passcheck(authctxt->pw->pw_name, responses[0]) != -1) 79 return 0; 80 return -1; 81 } 82 83 static void 84 skey_free_ctx(void *ctx) 85 { 86 /* we don't have a special context */ 87 } 88 89 KbdintDevice skey_device = { 90 "skey", 91 skey_init_ctx, 92 skey_query, 93 skey_respond, 94 skey_free_ctx 95 }; 96 97 KbdintDevice mm_skey_device = { 98 "skey", 99 skey_init_ctx, 100 mm_skey_query, 101 mm_skey_respond, 102 skey_free_ctx 103 }; 104 #endif /* SKEY */ 105