| 1 | /*
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| 2 | * Copyright (c) 2007 Kungliga Tekniska Högskolan
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| 3 | * (Royal Institute of Technology, Stockholm, Sweden).
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | *
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | *
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| 17 | * 3. Neither the name of the Institute nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | */
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| 33 |
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| 34 | #include "kdc_locl.h"
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| 35 |
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| 36 | static krb5plugin_windc_ftable *windcft;
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| 37 | static void *windcctx;
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| 38 |
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| 39 | /*
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| 40 | * Pick the first WINDC module that we find.
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| 41 | */
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| 42 |
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| 43 | krb5_error_code
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| 44 | krb5_kdc_windc_init(krb5_context context)
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| 45 | {
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| 46 | struct krb5_plugin *list = NULL, *e;
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| 47 | krb5_error_code ret;
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| 48 |
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| 49 | ret = _krb5_plugin_find(context, PLUGIN_TYPE_DATA, "windc", &list);
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| 50 | if(ret != 0 || list == NULL)
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| 51 | return 0;
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| 52 |
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| 53 | for (e = list; e != NULL; e = _krb5_plugin_get_next(e)) {
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| 54 |
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| 55 | windcft = _krb5_plugin_get_symbol(e);
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| 56 | if (windcft->minor_version < KRB5_WINDC_PLUGIN_MINOR)
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| 57 | continue;
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| 58 |
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| 59 | (*windcft->init)(context, &windcctx);
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| 60 | break;
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| 61 | }
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| 62 | _krb5_plugin_free(list);
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| 63 | if (e == NULL) {
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| 64 | krb5_set_error_message(context, ENOENT, "Did not find any WINDC plugin");
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| 65 | windcft = NULL;
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| 66 | return ENOENT;
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| 67 | }
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| 68 |
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| 69 | return 0;
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| 70 | }
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| 71 |
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| 72 |
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| 73 | krb5_error_code
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| 74 | _kdc_pac_generate(krb5_context context,
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| 75 | hdb_entry_ex *client,
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| 76 | krb5_pac *pac)
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| 77 | {
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| 78 | *pac = NULL;
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| 79 | if (windcft == NULL)
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| 80 | return 0;
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| 81 | return (windcft->pac_generate)(windcctx, context, client, pac);
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| 82 | }
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| 83 |
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| 84 | krb5_error_code
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| 85 | _kdc_pac_verify(krb5_context context,
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| 86 | const krb5_principal client_principal,
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| 87 | const krb5_principal delegated_proxy_principal,
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| 88 | hdb_entry_ex *client,
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| 89 | hdb_entry_ex *server,
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| 90 | hdb_entry_ex *krbtgt,
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| 91 | krb5_pac *pac,
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| 92 | int *verified)
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| 93 | {
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| 94 | krb5_error_code ret;
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| 95 |
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| 96 | if (windcft == NULL)
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| 97 | return 0;
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| 98 |
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| 99 | ret = windcft->pac_verify(windcctx, context,
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| 100 | client_principal,
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| 101 | delegated_proxy_principal,
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| 102 | client, server, krbtgt, pac);
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| 103 | if (ret == 0)
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| 104 | *verified = 1;
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| 105 | return ret;
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| 106 | }
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| 107 |
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| 108 | krb5_error_code
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| 109 | _kdc_check_access(krb5_context context,
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| 110 | krb5_kdc_configuration *config,
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| 111 | hdb_entry_ex *client_ex, const char *client_name,
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| 112 | hdb_entry_ex *server_ex, const char *server_name,
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| 113 | KDC_REQ *req,
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| 114 | krb5_data *e_data)
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| 115 | {
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| 116 | if (windcft == NULL)
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| 117 | return kdc_check_flags(context, config,
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| 118 | client_ex, client_name,
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| 119 | server_ex, server_name,
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| 120 | req->msg_type == krb_as_req);
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| 121 |
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| 122 | return (windcft->client_access)(windcctx,
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| 123 | context, config,
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| 124 | client_ex, client_name,
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| 125 | server_ex, server_name,
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| 126 | req, e_data);
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| 127 | }
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