2 * Copyright (c) 2010, JANET(UK)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of JANET(UK) nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * Portions Copyright 2009 by the Massachusetts Institute of Technology.
34 * All Rights Reserved.
36 * Export of this software from the United States of America may
37 * require a specific license from the United States Government.
38 * It is the responsibility of any person or organization contemplating
39 * export to obtain such a license before exporting.
41 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
42 * distribute this software and its documentation for any purpose and
43 * without fee is hereby granted, provided that the above copyright
44 * notice appear in all copies and that both that copyright notice and
45 * this permission notice appear in supporting documentation, and that
46 * the name of M.I.T. not be used in advertising or publicity pertaining
47 * to distribution of the software without specific, written prior
48 * permission. Furthermore if you modify this software you must label
49 * your software as modified software and not distribute it in such a
50 * fashion that it might be confused with the original M.I.T. software.
51 * M.I.T. makes no representations about the suitability of
52 * this software for any purpose. It is provided "as is" without express
53 * or implied warranty.
56 #include "gssapiP_eap.h"
58 static gss_OID_desc gssEapNtPrincipalName = {
59 /* 1.3.6.1.4.1.5322.21.2.1 */
60 10, "\x2B\x06\x01\x04\x01\xA9\x4A\x15\x02\x01"
63 gss_OID GSS_EAP_NT_PRINCIPAL_NAME = &gssEapNtPrincipalName;
66 gssEapAllocName(OM_uint32 *minor, gss_name_t *pName)
71 *pName = GSS_C_NO_NAME;
73 name = (gss_name_t)GSSEAP_CALLOC(1, sizeof(*name));
79 if (GSSEAP_MUTEX_INIT(&name->mutex) != 0) {
81 gssEapReleaseName(&tmpMinor, &name);
87 return GSS_S_COMPLETE;
91 gssEapReleaseName(OM_uint32 *minor, gss_name_t *pName)
94 krb5_context krbContext = NULL;
98 return GSS_S_COMPLETE;
102 if (name == GSS_C_NO_NAME) {
103 return GSS_S_COMPLETE;
106 GSSEAP_KRB_INIT(&krbContext);
107 krb5_free_principal(krbContext, name->krbPrincipal);
109 gssEapReleaseAttrContext(&tmpMinor, name);
111 GSSEAP_MUTEX_DESTROY(&name->mutex);
116 return GSS_S_COMPLETE;
120 krbPrincipalToName(OM_uint32 *minor,
121 krb5_principal *principal,
127 major = gssEapAllocName(minor, &name);
128 if (GSS_ERROR(major))
131 name->krbPrincipal = *principal;
134 if (name->krbPrincipal->length == 1) {
135 name->flags |= NAME_FLAG_NAI;
137 name->flags |= NAME_FLAG_SERVICE;
143 return GSS_S_COMPLETE;
147 importServiceName(OM_uint32 *minor,
148 const gss_buffer_t nameBuffer,
151 OM_uint32 major, tmpMinor;
152 krb5_context krbContext;
153 krb5_principal krbPrinc;
154 char *service, *host;
156 GSSEAP_KRB_INIT(&krbContext);
158 major = bufferToString(minor, nameBuffer, &service);
159 if (GSS_ERROR(major))
162 host = strchr(service, '@');
168 /* XXX this is probably NOT what we want to be doing */
169 *minor = krb5_sname_to_principal(krbContext, host, service,
170 KRB5_NT_SRV_HST, &krbPrinc);
172 GSSEAP_FREE(service);
173 return GSS_S_FAILURE;
176 major = krbPrincipalToName(minor, &krbPrinc, pName);
177 if (GSS_ERROR(major)) {
178 krb5_free_principal(krbContext, krbPrinc);
181 GSSEAP_FREE(service);
186 importUserName(OM_uint32 *minor,
187 const gss_buffer_t nameBuffer,
190 OM_uint32 major, tmpMinor;
191 krb5_context krbContext;
192 krb5_principal krbPrinc;
195 GSSEAP_KRB_INIT(&krbContext);
197 major = bufferToString(minor, nameBuffer, &nameString);
198 if (GSS_ERROR(major))
201 *minor = krb5_parse_name(krbContext, nameString, &krbPrinc);
203 GSSEAP_FREE(nameString);
204 return GSS_S_FAILURE;
207 major = krbPrincipalToName(minor, &krbPrinc, pName);
208 if (GSS_ERROR(major)) {
209 krb5_free_principal(krbContext, krbPrinc);
212 GSSEAP_FREE(nameString);
216 #define UPDATE_REMAIN(n) do { \
221 #define CHECK_REMAIN(n) do { \
222 if (remain < (n)) { \
224 major = GSS_S_BAD_NAME; \
230 gssEapImportNameInternal(OM_uint32 *minor,
231 const gss_buffer_t nameBuffer,
235 OM_uint32 major, tmpMinor;
236 krb5_context krbContext;
240 enum gss_eap_token_type tok_type;
241 gss_name_t name = GSS_C_NO_NAME;
243 GSSEAP_KRB_INIT(&krbContext);
245 p = (unsigned char *)nameBuffer->value;
246 remain = nameBuffer->length;
248 if (flags & EXPORT_NAME_FLAG_OID) {
249 if (remain < 6 + GSS_EAP_MECHANISM->length + 4)
250 return GSS_S_BAD_NAME;
253 tok_type = load_uint16_be(p);
254 if (tok_type != TOK_TYPE_EXPORT_NAME &&
255 tok_type != TOK_TYPE_EXPORT_NAME_COMPOSITE)
256 return GSS_S_BAD_NAME;
259 if (tok_type == TOK_TYPE_EXPORT_NAME_COMPOSITE)
260 flags |= EXPORT_NAME_FLAG_ATTRS;
263 len = load_uint16_be(p);
264 if (len != 2 + GSS_EAP_MECHANISM->length)
265 return GSS_S_BAD_NAME;
270 return GSS_S_BAD_NAME;
271 if (p[1] != GSS_EAP_MECHANISM->length)
272 return GSS_S_BAD_MECH;
273 if (memcmp(&p[2], GSS_EAP_MECHANISM->elements, GSS_EAP_MECHANISM->length))
274 return GSS_S_BAD_MECH;
275 UPDATE_REMAIN(2 + GSS_EAP_MECHANISM->length);
279 len = load_uint32_be(p);
288 major = importUserName(minor, &buf, &name);
289 if (GSS_ERROR(major))
292 if (flags & EXPORT_NAME_FLAG_ATTRS) {
296 buf.length = load_uint32_be(p);
299 CHECK_REMAIN(buf.length);
301 UPDATE_REMAIN(buf.length);
303 major = gssEapImportAttrContext(minor, &buf, name);
304 if (GSS_ERROR(major))
308 major = GSS_S_COMPLETE;
311 if (GSS_ERROR(major))
312 gssEapReleaseName(&tmpMinor, &name);
320 gssEapImportName(OM_uint32 *minor,
321 const gss_buffer_t nameBuffer,
325 OM_uint32 major, tmpMinor;
327 *name = GSS_C_NO_NAME;
329 if (nameType == GSS_C_NULL_OID ||
330 oidEqual(nameType, GSS_C_NT_USER_NAME) ||
331 oidEqual(nameType, GSS_EAP_NT_PRINCIPAL_NAME))
332 major = importUserName(minor, nameBuffer, name);
333 else if (oidEqual(nameType, GSS_C_NT_HOSTBASED_SERVICE) ||
334 oidEqual(nameType, GSS_C_NT_HOSTBASED_SERVICE_X))
335 major = importServiceName(minor, nameBuffer, name);
336 else if (oidEqual(nameType, GSS_C_NT_EXPORT_NAME))
337 major = gssEapImportNameInternal(minor, nameBuffer, name,
338 EXPORT_NAME_FLAG_OID);
340 major = GSS_S_BAD_NAMETYPE;
342 if (GSS_ERROR(major))
343 gssEapReleaseName(&tmpMinor, name);
349 gssEapExportName(OM_uint32 *minor,
350 const gss_name_t name,
351 gss_buffer_t exportedName)
353 return gssEapExportNameInternal(minor, name, exportedName,
354 EXPORT_NAME_FLAG_OID);
358 gssEapExportNameInternal(OM_uint32 *minor,
359 const gss_name_t name,
360 gss_buffer_t exportedName,
363 OM_uint32 major = GSS_S_FAILURE, tmpMinor;
364 krb5_context krbContext;
365 char *krbName = NULL;
368 gss_buffer_desc attrs = GSS_C_EMPTY_BUFFER;
370 exportedName->length = 0;
371 exportedName->value = NULL;
373 GSSEAP_KRB_INIT(&krbContext);
374 GSSEAP_MUTEX_LOCK(&name->mutex);
376 *minor = krb5_unparse_name(krbContext, name->krbPrincipal, &krbName);
378 major = GSS_S_FAILURE;
381 krbNameLen = strlen(krbName);
383 exportedName->length = 0;
384 if (flags & EXPORT_NAME_FLAG_OID) {
385 exportedName->length += 6 + GSS_EAP_MECHANISM->length;
387 exportedName->length += 4 + krbNameLen;
388 if (flags & EXPORT_NAME_FLAG_ATTRS) {
389 major = gssEapExportAttrContext(minor, name, &attrs);
390 if (GSS_ERROR(major))
392 exportedName->length += 4 + attrs.length;
395 exportedName->value = GSSEAP_MALLOC(exportedName->length);
396 if (exportedName->value == NULL) {
397 major = GSS_S_FAILURE;
401 p = (unsigned char *)exportedName->value;
403 if (flags & EXPORT_NAME_FLAG_OID) {
404 /* TOK | MECH_OID_LEN */
405 store_uint16_be((flags & EXPORT_NAME_FLAG_ATTRS)
406 ? TOK_TYPE_EXPORT_NAME_COMPOSITE
407 : TOK_TYPE_EXPORT_NAME,
410 store_uint16_be(GSS_EAP_MECHANISM->length + 2, p);
415 *p++ = GSS_EAP_MECHANISM->length & 0xff;
416 memcpy(p, GSS_EAP_MECHANISM->elements, GSS_EAP_MECHANISM->length);
417 p += GSS_EAP_MECHANISM->length;
421 store_uint32_be(krbNameLen, p);
425 memcpy(p, krbName, krbNameLen);
428 if (flags & EXPORT_NAME_FLAG_ATTRS) {
429 store_uint32_be(attrs.length, p);
430 memcpy(&p[4], attrs.value, attrs.length);
431 p += 4 + attrs.length;
435 major = GSS_S_COMPLETE;
438 GSSEAP_MUTEX_UNLOCK(&name->mutex);
439 gss_release_buffer(&tmpMinor, &attrs);
440 if (GSS_ERROR(major))
441 gss_release_buffer(&tmpMinor, exportedName);
442 krb5_free_unparsed_name(krbContext, krbName);