2 * Copyright (c) 2011, 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.
57 * Name utility routines.
60 #include "gssapiP_eap.h"
62 static gss_OID_desc gssEapNtEapName = {
63 /* 1.3.6.1.4.1.5322.22.2.1 */
64 10, "\x2B\x06\x01\x04\x01\xA9\x4A\x16\x02\x01"
67 gss_OID GSS_EAP_NT_EAP_NAME = &gssEapNtEapName;
70 gssEapAllocName(OM_uint32 *minor, gss_name_t *pName)
75 *pName = GSS_C_NO_NAME;
77 name = (gss_name_t)GSSEAP_CALLOC(1, sizeof(*name));
83 if (GSSEAP_MUTEX_INIT(&name->mutex) != 0) {
85 gssEapReleaseName(&tmpMinor, &name);
91 return GSS_S_COMPLETE;
95 gssEapReleaseName(OM_uint32 *minor, gss_name_t *pName)
98 krb5_context krbContext = NULL;
104 return GSS_S_COMPLETE;
108 if (name == GSS_C_NO_NAME) {
109 return GSS_S_COMPLETE;
112 GSSEAP_KRB_INIT(&krbContext);
113 krb5_free_principal(krbContext, name->krbPrincipal);
114 gssEapReleaseOid(&tmpMinor, &name->mechanismUsed);
116 gssEapReleaseAttrContext(&tmpMinor, name);
118 GSSEAP_MUTEX_DESTROY(&name->mutex);
122 return GSS_S_COMPLETE;
126 krbPrincipalToName(OM_uint32 *minor,
127 krb5_principal *principal,
133 major = gssEapAllocName(minor, &name);
134 if (GSS_ERROR(major))
137 name->krbPrincipal = *principal;
140 if (KRB_PRINC_LENGTH(name->krbPrincipal) > 1) {
141 name->flags |= NAME_FLAG_SERVICE;
143 name->flags |= NAME_FLAG_NAI;
149 return GSS_S_COMPLETE;
153 importServiceName(OM_uint32 *minor,
154 const gss_buffer_t nameBuffer,
158 krb5_error_code code;
159 krb5_context krbContext;
160 krb5_principal krbPrinc;
161 char *service, *host, *realm = NULL;
163 GSSEAP_KRB_INIT(&krbContext);
165 major = bufferToString(minor, nameBuffer, &service);
166 if (GSS_ERROR(major))
169 host = strchr(service, '@');
175 krb5_get_default_realm(krbContext, &realm);
177 code = krb5_build_principal(krbContext,
179 realm != NULL ? strlen(realm) : 0,
180 realm != NULL ? realm : "",
186 krb5_free_default_realm(krbContext, realm);
189 KRB_PRINC_TYPE(krbPrinc) = KRB5_NT_SRV_HST;
191 major = krbPrincipalToName(minor, &krbPrinc, pName);
192 if (GSS_ERROR(major))
193 krb5_free_principal(krbContext, krbPrinc);
195 major = GSS_S_FAILURE;
196 *minor = GSSEAP_BAD_SERVICE_NAME;
199 GSSEAP_FREE(service);
205 importUserName(OM_uint32 *minor,
206 const gss_buffer_t nameBuffer,
210 krb5_context krbContext;
211 krb5_principal krbPrinc;
212 char *nameString, *realm = NULL;
214 krb5_error_code code;
216 GSSEAP_KRB_INIT(&krbContext);
218 code = krb5_get_default_realm(krbContext, &realm);
219 if (code != 0 || realm == NULL)
220 flags |= KRB5_PRINCIPAL_PARSE_REQUIRE_REALM;
222 krb5_free_default_realm(krbContext, realm);
224 if (nameBuffer == GSS_C_NO_BUFFER) {
225 *minor = krb5_copy_principal(krbContext,
226 krbAnonymousPrincipal(), &krbPrinc);
228 return GSS_S_FAILURE;
230 major = bufferToString(minor, nameBuffer, &nameString);
231 if (GSS_ERROR(major))
234 *minor = krb5_parse_name_flags(krbContext, nameString, flags, &krbPrinc);
236 GSSEAP_FREE(nameString);
237 return GSS_S_FAILURE;
241 major = krbPrincipalToName(minor, &krbPrinc, pName);
242 if (GSS_ERROR(major)) {
243 krb5_free_principal(krbContext, krbPrinc);
246 GSSEAP_FREE(nameString);
251 importAnonymousName(OM_uint32 *minor,
252 const gss_buffer_t nameBuffer GSSEAP_UNUSED,
256 krb5_context krbContext;
257 krb5_principal krbPrinc;
259 GSSEAP_KRB_INIT(&krbContext);
261 *minor = krb5_copy_principal(krbContext, krbAnonymousPrincipal(),
264 return GSS_S_FAILURE;
266 major = krbPrincipalToName(minor, &krbPrinc, pName);
267 if (GSS_ERROR(major)) {
268 krb5_free_principal(krbContext, krbPrinc);
274 #define UPDATE_REMAIN(n) do { \
279 #define CHECK_REMAIN(n) do { \
280 if (remain < (n)) { \
281 major = GSS_S_BAD_NAME; \
282 *minor = GSSEAP_TOK_TRUNC; \
288 gssEapImportNameInternal(OM_uint32 *minor,
289 const gss_buffer_t nameBuffer,
293 OM_uint32 major, tmpMinor;
294 krb5_context krbContext;
298 enum gss_eap_token_type tokType;
299 gss_name_t name = GSS_C_NO_NAME;
300 gss_OID mechanismUsed = GSS_C_NO_OID;
302 GSSEAP_KRB_INIT(&krbContext);
304 p = (unsigned char *)nameBuffer->value;
305 remain = nameBuffer->length;
307 if (flags & EXPORT_NAME_FLAG_OID) {
310 /* TOK_ID || MECH_OID_LEN || MECH_OID */
312 return GSS_S_BAD_NAME;
314 if (flags & EXPORT_NAME_FLAG_COMPOSITE)
315 tokType = TOK_TYPE_EXPORT_NAME_COMPOSITE;
317 tokType = TOK_TYPE_EXPORT_NAME;
320 if (load_uint16_be(p) != tokType)
321 return GSS_S_BAD_NAME;
325 len = load_uint16_be(p);
327 return GSS_S_BAD_NAME;
332 return GSS_S_BAD_NAME;
335 mech.elements = &p[2];
337 CHECK_REMAIN(mech.length);
339 major = gssEapCanonicalizeOid(minor,
341 OID_FLAG_FAMILY_MECH_VALID |
342 OID_FLAG_MAP_FAMILY_MECH_TO_NULL,
344 if (GSS_ERROR(major))
347 UPDATE_REMAIN(2 + mech.length);
352 len = load_uint32_be(p);
361 major = importUserName(minor, &buf, &name);
362 if (GSS_ERROR(major))
365 name->mechanismUsed = mechanismUsed;
366 mechanismUsed = GSS_C_NO_OID;
368 if (flags & EXPORT_NAME_FLAG_COMPOSITE) {
374 major = gssEapImportAttrContext(minor, &buf, name);
375 if (GSS_ERROR(major))
379 major = GSS_S_COMPLETE;
383 if (GSS_ERROR(major)) {
384 gssEapReleaseOid(&tmpMinor, &mechanismUsed);
385 gssEapReleaseName(&tmpMinor, &name);
394 importExportName(OM_uint32 *minor,
395 const gss_buffer_t nameBuffer,
398 return gssEapImportNameInternal(minor, nameBuffer, name,
399 EXPORT_NAME_FLAG_OID);
402 #ifdef HAVE_GSS_C_NT_COMPOSITE_EXPORT
404 importCompositeExportName(OM_uint32 *minor,
405 const gss_buffer_t nameBuffer,
408 return gssEapImportNameInternal(minor, nameBuffer, name,
409 EXPORT_NAME_FLAG_OID |
410 EXPORT_NAME_FLAG_COMPOSITE);
414 struct gss_eap_name_import_provider {
416 OM_uint32 (*import)(OM_uint32 *, const gss_buffer_t, gss_name_t *);
420 gssEapImportName(OM_uint32 *minor,
421 const gss_buffer_t nameBuffer,
422 const gss_OID nameType,
423 const gss_OID mechType,
426 struct gss_eap_name_import_provider nameTypes[] = {
427 { GSS_EAP_NT_EAP_NAME, importUserName },
428 { GSS_C_NT_USER_NAME, importUserName },
429 { GSS_C_NT_HOSTBASED_SERVICE, importServiceName },
430 { GSS_C_NT_HOSTBASED_SERVICE_X, importServiceName },
431 { GSS_C_NT_ANONYMOUS, importAnonymousName },
432 { GSS_C_NT_EXPORT_NAME, importExportName },
433 { GSS_KRB5_NT_PRINCIPAL_NAME, importUserName },
434 #ifdef HAVE_GSS_C_NT_COMPOSITE_EXPORT
435 { GSS_C_NT_COMPOSITE_EXPORT, importCompositeExportName },
439 OM_uint32 major = GSS_S_BAD_NAMETYPE;
441 gss_name_t name = GSS_C_NO_NAME;
443 for (i = 0; i < sizeof(nameTypes) / sizeof(nameTypes[0]); i++) {
444 if (oidEqual(nameTypes[i].oid,
445 nameType == GSS_C_NO_OID ? GSS_EAP_NT_EAP_NAME : nameType)) {
446 major = nameTypes[i].import(minor, nameBuffer, &name);
451 if (major == GSS_S_COMPLETE &&
452 mechType != GSS_C_NO_OID) {
453 assert(gssEapIsConcreteMechanismOid(mechType));
454 assert(name->mechanismUsed == GSS_C_NO_OID);
456 major = gssEapCanonicalizeOid(minor, mechType, 0, &name->mechanismUsed);
459 if (GSS_ERROR(major))
460 gssEapReleaseName(&tmpMinor, &name);
468 gssEapExportName(OM_uint32 *minor,
469 const gss_name_t name,
470 gss_buffer_t exportedName)
472 return gssEapExportNameInternal(minor, name, exportedName,
473 EXPORT_NAME_FLAG_OID);
477 gssEapExportNameInternal(OM_uint32 *minor,
478 const gss_name_t name,
479 gss_buffer_t exportedName,
482 OM_uint32 major = GSS_S_FAILURE, tmpMinor;
483 krb5_context krbContext;
484 char *krbName = NULL;
485 size_t krbNameLen, exportedNameLen;
487 gss_buffer_desc attrs = GSS_C_EMPTY_BUFFER;
490 exportedName->length = 0;
491 exportedName->value = NULL;
493 if (name->mechanismUsed != GSS_C_NO_OID)
494 mech = name->mechanismUsed;
496 mech = GSS_EAP_MECHANISM;
498 GSSEAP_KRB_INIT(&krbContext);
500 *minor = krb5_unparse_name(krbContext, name->krbPrincipal, &krbName);
502 major = GSS_S_FAILURE;
505 krbNameLen = strlen(krbName);
508 if (flags & EXPORT_NAME_FLAG_OID) {
509 exportedNameLen += 6 + mech->length;
511 exportedNameLen += 4 + krbNameLen;
512 if (flags & EXPORT_NAME_FLAG_COMPOSITE) {
513 major = gssEapExportAttrContext(minor, name, &attrs);
514 if (GSS_ERROR(major))
516 exportedNameLen += attrs.length;
519 exportedName->value = GSSEAP_MALLOC(exportedNameLen);
520 if (exportedName->value == NULL) {
521 major = GSS_S_FAILURE;
525 exportedName->length = exportedNameLen;
527 p = (unsigned char *)exportedName->value;
529 if (flags & EXPORT_NAME_FLAG_OID) {
530 /* TOK | MECH_OID_LEN */
531 store_uint16_be((flags & EXPORT_NAME_FLAG_COMPOSITE)
532 ? TOK_TYPE_EXPORT_NAME_COMPOSITE
533 : TOK_TYPE_EXPORT_NAME,
536 store_uint16_be(mech->length + 2, p);
541 *p++ = mech->length & 0xff;
542 memcpy(p, mech->elements, mech->length);
547 store_uint32_be(krbNameLen, p);
551 memcpy(p, krbName, krbNameLen);
554 if (flags & EXPORT_NAME_FLAG_COMPOSITE) {
555 memcpy(p, attrs.value, attrs.length);
559 assert(p == (unsigned char *)exportedName->value + exportedNameLen);
561 major = GSS_S_COMPLETE;
565 gss_release_buffer(&tmpMinor, &attrs);
566 if (GSS_ERROR(major))
567 gss_release_buffer(&tmpMinor, exportedName);
568 krb5_free_unparsed_name(krbContext, krbName);
574 gssEapCanonicalizeName(OM_uint32 *minor,
575 const gss_name_t input_name,
576 const gss_OID mech_type,
577 gss_name_t *dest_name)
579 OM_uint32 major, tmpMinor;
580 krb5_context krbContext;
584 if (input_name == GSS_C_NO_NAME) {
586 return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_BAD_NAME;
589 GSSEAP_KRB_INIT(&krbContext);
591 major = gssEapAllocName(minor, &name);
592 if (GSS_ERROR(major)) {
596 if (mech_type != GSS_C_NO_OID)
597 mech_used = mech_type;
599 mech_used = input_name->mechanismUsed;
601 major = gssEapCanonicalizeOid(minor,
604 &name->mechanismUsed);
605 if (GSS_ERROR(major))
608 name->flags = input_name->flags;
610 *minor = krb5_copy_principal(krbContext, input_name->krbPrincipal,
611 &name->krbPrincipal);
613 major = GSS_S_FAILURE;
617 if (input_name->attrCtx != NULL) {
618 major = gssEapDuplicateAttrContext(minor, input_name, name);
619 if (GSS_ERROR(major))
626 if (GSS_ERROR(major)) {
627 gssEapReleaseName(&tmpMinor, &name);
634 gssEapDuplicateName(OM_uint32 *minor,
635 const gss_name_t input_name,
636 gss_name_t *dest_name)
638 return gssEapCanonicalizeName(minor, input_name,
639 GSS_C_NO_OID, dest_name);
643 gssEapDisplayName(OM_uint32 *minor,
645 gss_buffer_t output_name_buffer,
646 gss_OID *output_name_type)
649 krb5_context krbContext;
653 GSSEAP_KRB_INIT(&krbContext);
655 output_name_buffer->length = 0;
656 output_name_buffer->value = NULL;
658 if (name == GSS_C_NO_NAME) {
660 return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_BAD_NAME;
663 *minor = krb5_unparse_name(krbContext, name->krbPrincipal, &krbName);
665 return GSS_S_FAILURE;
668 major = makeStringBuffer(minor, krbName, output_name_buffer);
669 if (GSS_ERROR(major)) {
670 krb5_free_unparsed_name(krbContext, krbName);
674 krb5_free_unparsed_name(krbContext, krbName);
676 if (KRB_PRINC_TYPE(name->krbPrincipal) == KRB5_NT_WELLKNOWN &&
677 krb5_principal_compare(krbContext,
678 name->krbPrincipal, krbAnonymousPrincipal())) {
679 name_type = GSS_C_NT_ANONYMOUS;
681 name_type = GSS_EAP_NT_EAP_NAME;
684 if (output_name_type != NULL)
685 *output_name_type = name_type;
687 return GSS_S_COMPLETE;