1 /* 2 * Copyright (c) 2003 - 2005 Kungliga Tekniska Högskolan 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 "gsskrb5_locl.h" 35 36 static krb5_error_code 37 check_compat(OM_uint32 *minor_status, 38 krb5_context context, krb5_const_principal name, 39 const char *option, krb5_boolean *compat, 40 krb5_boolean match_val) 41 { 42 krb5_error_code ret = 0; 43 char **p, **q; 44 krb5_principal match; 45 46 47 p = krb5_config_get_strings(context, NULL, "gssapi", 48 option, NULL); 49 if(p == NULL) 50 return 0; 51 52 match = NULL; 53 for(q = p; *q; q++) { 54 ret = krb5_parse_name(context, *q, &match); 55 if (ret) 56 break; 57 58 if (krb5_principal_match(context, name, match)) { 59 *compat = match_val; 60 break; 61 } 62 63 krb5_free_principal(context, match); 64 match = NULL; 65 } 66 if (match) 67 krb5_free_principal(context, match); 68 krb5_config_free_strings(p); 69 70 if (ret) { 71 if (minor_status) 72 *minor_status = ret; 73 return GSS_S_FAILURE; 74 } 75 76 return 0; 77 } 78 79 /* 80 * ctx->ctx_id_mutex is assumed to be locked 81 */ 82 83 OM_uint32 84 _gss_DES3_get_mic_compat(OM_uint32 *minor_status, 85 gsskrb5_ctx ctx, 86 krb5_context context) 87 { 88 krb5_boolean use_compat = FALSE; 89 OM_uint32 ret; 90 91 if ((ctx->more_flags & COMPAT_OLD_DES3_SELECTED) == 0) { 92 ret = check_compat(minor_status, context, ctx->target, 93 "broken_des3_mic", &use_compat, TRUE); 94 if (ret) 95 return ret; 96 ret = check_compat(minor_status, context, ctx->target, 97 "correct_des3_mic", &use_compat, FALSE); 98 if (ret) 99 return ret; 100 101 if (use_compat) 102 ctx->more_flags |= COMPAT_OLD_DES3; 103 ctx->more_flags |= COMPAT_OLD_DES3_SELECTED; 104 } 105 return 0; 106 } 107 108 #if 0 109 OM_uint32 110 gss_krb5_compat_des3_mic(OM_uint32 *minor_status, gss_ctx_id_t ctx, int on) 111 { 112 *minor_status = 0; 113 114 HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex); 115 if (on) { 116 ctx->more_flags |= COMPAT_OLD_DES3; 117 } else { 118 ctx->more_flags &= ~COMPAT_OLD_DES3; 119 } 120 ctx->more_flags |= COMPAT_OLD_DES3_SELECTED; 121 HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex); 122 123 return 0; 124 } 125 #endif 126