1 /* 2 * Copyright (c) 2003 - 2005 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "krb5/gsskrb5_locl.h" 35 36 RCSID("$Id: compat.c 19031 2006-11-13 18:02:57Z lha $"); 37 38 39 static krb5_error_code 40 check_compat(OM_uint32 *minor_status, 41 krb5_context context, krb5_const_principal name, 42 const char *option, krb5_boolean *compat, 43 krb5_boolean match_val) 44 { 45 krb5_error_code ret = 0; 46 char **p, **q; 47 krb5_principal match; 48 49 50 p = krb5_config_get_strings(context, NULL, "gssapi", 51 option, NULL); 52 if(p == NULL) 53 return 0; 54 55 match = NULL; 56 for(q = p; *q; q++) { 57 ret = krb5_parse_name(context, *q, &match); 58 if (ret) 59 break; 60 61 if (krb5_principal_match(context, name, match)) { 62 *compat = match_val; 63 break; 64 } 65 66 krb5_free_principal(context, match); 67 match = NULL; 68 } 69 if (match) 70 krb5_free_principal(context, match); 71 krb5_config_free_strings(p); 72 73 if (ret) { 74 if (minor_status) 75 *minor_status = ret; 76 return GSS_S_FAILURE; 77 } 78 79 return 0; 80 } 81 82 /* 83 * ctx->ctx_id_mutex is assumed to be locked 84 */ 85 86 OM_uint32 87 _gss_DES3_get_mic_compat(OM_uint32 *minor_status, 88 gsskrb5_ctx ctx, 89 krb5_context context) 90 { 91 krb5_boolean use_compat = FALSE; 92 OM_uint32 ret; 93 94 if ((ctx->more_flags & COMPAT_OLD_DES3_SELECTED) == 0) { 95 ret = check_compat(minor_status, context, ctx->target, 96 "broken_des3_mic", &use_compat, TRUE); 97 if (ret) 98 return ret; 99 ret = check_compat(minor_status, context, ctx->target, 100 "correct_des3_mic", &use_compat, FALSE); 101 if (ret) 102 return ret; 103 104 if (use_compat) 105 ctx->more_flags |= COMPAT_OLD_DES3; 106 ctx->more_flags |= COMPAT_OLD_DES3_SELECTED; 107 } 108 return 0; 109 } 110 111 #if 0 112 OM_uint32 113 gss_krb5_compat_des3_mic(OM_uint32 *minor_status, gss_ctx_id_t ctx, int on) 114 { 115 *minor_status = 0; 116 117 HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex); 118 if (on) { 119 ctx->more_flags |= COMPAT_OLD_DES3; 120 } else { 121 ctx->more_flags &= ~COMPAT_OLD_DES3; 122 } 123 ctx->more_flags |= COMPAT_OLD_DES3_SELECTED; 124 HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex); 125 126 return 0; 127 } 128 #endif 129