1 /* 2 * Copyright (c) 2007 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 "kdc_locl.h" 35 36 static krb5plugin_windc_ftable *windcft; 37 static void *windcctx; 38 39 /* 40 * Pick the first WINDC module that we find. 41 */ 42 43 krb5_error_code 44 krb5_kdc_windc_init(krb5_context context) 45 { 46 struct krb5_plugin *list = NULL, *e; 47 krb5_error_code ret; 48 49 ret = _krb5_plugin_find(context, PLUGIN_TYPE_DATA, "windc", &list); 50 if(ret != 0 || list == NULL) 51 return 0; 52 53 for (e = list; e != NULL; e = _krb5_plugin_get_next(e)) { 54 55 windcft = _krb5_plugin_get_symbol(e); 56 if (windcft->minor_version < KRB5_WINDC_PLUGIN_MINOR) 57 continue; 58 59 (*windcft->init)(context, &windcctx); 60 break; 61 } 62 _krb5_plugin_free(list); 63 if (e == NULL) { 64 krb5_set_error_message(context, ENOENT, "Did not find any WINDC plugin"); 65 windcft = NULL; 66 return ENOENT; 67 } 68 69 return 0; 70 } 71 72 73 krb5_error_code 74 _kdc_pac_generate(krb5_context context, 75 hdb_entry_ex *client, 76 krb5_pac *pac) 77 { 78 *pac = NULL; 79 if (windcft == NULL) 80 return 0; 81 return (windcft->pac_generate)(windcctx, context, client, pac); 82 } 83 84 krb5_error_code 85 _kdc_pac_verify(krb5_context context, 86 const krb5_principal client_principal, 87 const krb5_principal delegated_proxy_principal, 88 hdb_entry_ex *client, 89 hdb_entry_ex *server, 90 hdb_entry_ex *krbtgt, 91 krb5_pac *pac, 92 int *verified) 93 { 94 krb5_error_code ret; 95 96 if (windcft == NULL) 97 return 0; 98 99 ret = windcft->pac_verify(windcctx, context, 100 client_principal, 101 delegated_proxy_principal, 102 client, server, krbtgt, pac); 103 if (ret == 0) 104 *verified = 1; 105 return ret; 106 } 107 108 krb5_error_code 109 _kdc_check_access(krb5_context context, 110 krb5_kdc_configuration *config, 111 hdb_entry_ex *client_ex, const char *client_name, 112 hdb_entry_ex *server_ex, const char *server_name, 113 KDC_REQ *req, 114 krb5_data *e_data) 115 { 116 if (windcft == NULL) 117 return kdc_check_flags(context, config, 118 client_ex, client_name, 119 server_ex, server_name, 120 req->msg_type == krb_as_req); 121 122 return (windcft->client_access)(windcctx, 123 context, config, 124 client_ex, client_name, 125 server_ex, server_name, 126 req, e_data); 127 } 128