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
34 * Fast reauthentication support.
37 #include "gssapiP_eap.h"
42 * Fast reauthentication support for EAP GSS.
46 krb5_encrypt_tkt_part(krb5_context, const krb5_keyblock *, krb5_ticket *);
49 encode_krb5_ticket(const krb5_ticket *rep, krb5_data **code);
52 gssDisplayName(OM_uint32 *minor,
58 gssImportName(OM_uint32 *minor,
63 static krb5_error_code
64 getAcceptorKey(krb5_context krbContext,
67 krb5_principal *princ,
71 krb5_keytab keytab = NULL;
72 krb5_keytab_entry ktent = { 0 };
73 krb5_kt_cursor cursor;
76 memset(key, 0, sizeof(*key));
77 memset(&cursor, 0, sizeof(cursor));
79 code = krb5_kt_default(krbContext, &keytab);
83 if (cred != GSS_C_NO_CREDENTIAL && cred->name != GSS_C_NO_NAME) {
84 code = krb5_kt_get_entry(krbContext, keytab,
85 cred->name->krbPrincipal, 0,
86 ctx->encryptionType, &ktent);
91 * It's not clear that looking encrypting the ticket in the
92 * requested EAP enctype provides any value.
94 code = krb5_kt_start_seq_get(krbContext, keytab, &cursor);
98 while ((code = krb5_kt_next_entry(krbContext, keytab,
99 &ktent, &cursor)) == 0) {
100 if (KRB_KEY_TYPE(KRB_KT_ENT_KEYBLOCK(&ktent)) == ctx->encryptionType)
103 KRB_KT_ENT_FREE(krbContext, &ktent);
108 *princ = ktent.principal;
109 *key = *KRB_KT_ENT_KEYBLOCK(&ktent);
113 if (cred == GSS_C_NO_CREDENTIAL || cred->name == GSS_C_NO_NAME)
114 krb5_kt_end_seq_get(krbContext, keytab, &cursor);
115 krb5_kt_close(krbContext, keytab);
117 KRB_KT_ENT_FREE(krbContext, &ktent);
123 freezeAttrContext(OM_uint32 *minor,
124 gss_name_t initiatorName,
125 krb5_const_principal acceptorPrinc,
126 krb5_keyblock *session,
127 #ifdef HAVE_HEIMDAL_VERSION
128 krb5_authdata *kdcIssuedAuthData
130 krb5_authdata ***kdcIssuedAuthData
134 OM_uint32 major, tmpMinor;
135 krb5_error_code code;
136 krb5_context krbContext;
137 gss_buffer_desc attrBuf = GSS_C_EMPTY_BUFFER;
138 #ifdef HAVE_HEIMDAL_VERSION
139 krb5_authdata authDataBuf, *authData = &authDataBuf;
140 AuthorizationDataElement authDatum = { 0 };
142 krb5_authdata *authData[2], authDatum = { 0 };
145 memset(kdcIssuedAuthData, 0, sizeof(*kdcIssuedAuthData));
147 GSSEAP_KRB_INIT(&krbContext);
149 major = gssEapExportAttrContext(minor, initiatorName, &attrBuf);
150 if (GSS_ERROR(major))
153 authDatum.ad_type = KRB5_AUTHDATA_RADIUS_AVP;
154 #ifdef HAVE_HEIMDAL_VERSION
155 authDatum.ad_data.length = attrBuf.length;
156 authDatum.ad_data.data = attrBuf.value;
158 authData->val = &authDatum;
160 authDatum.length = attrBuf.length;
161 authDatum.contents = attrBuf.value;
162 authData[0] = &authDatum;
166 code = krbMakeAuthDataKdcIssued(krbContext, session, acceptorPrinc,
167 authData, kdcIssuedAuthData);
169 major = GSS_S_FAILURE;
172 major = GSS_S_COMPLETE;
175 gss_release_buffer(&tmpMinor, &attrBuf);
181 * Fabricate a ticket to ourselves given a GSS EAP context.
184 gssEapMakeReauthCreds(OM_uint32 *minor,
187 gss_buffer_t credBuf)
189 OM_uint32 major = GSS_S_COMPLETE;
190 krb5_error_code code;
191 krb5_context krbContext = NULL;
192 krb5_keyblock session = { 0 }, acceptorKey = { 0 };
193 krb5_principal server = NULL;
194 #ifdef HAVE_HEIMDAL_VERSION
196 EncTicketPart enc_part;
197 AuthorizationData authData = { 0 };
198 krb5_crypto krbCrypto = NULL;
199 krb5_data ticketData = { 0 };
200 krb5_data encPartData = { 0 };
204 krb5_enc_tkt_part enc_part;
205 krb5_data *ticketData = NULL;
207 krb5_data credsData = { 0 };
208 krb5_creds creds = { 0 };
209 krb5_auth_context authContext = NULL;
211 memset(&ticket, 0, sizeof(ticket));
212 memset(&enc_part, 0, sizeof(enc_part));
215 credBuf->value = NULL;
217 GSSEAP_KRB_INIT(&krbContext);
219 code = getAcceptorKey(krbContext, ctx, cred, &server, &acceptorKey);
222 return GSS_S_UNAVAILABLE;
226 * Generate a random session key to place in the ticket and
227 * sign the "KDC-Issued" authorization data element.
229 #ifdef HAVE_HEIMDAL_VERSION
230 ticket.realm = server->realm;
231 ticket.sname = server->name;
233 code = krb5_generate_random_keyblock(krbContext, ctx->encryptionType,
238 enc_part.flags.initial = 1;
239 enc_part.key = session;
240 enc_part.crealm = ctx->initiatorName->krbPrincipal->realm;
241 enc_part.cname = ctx->initiatorName->krbPrincipal->name;
242 enc_part.authtime = time(NULL);
243 enc_part.starttime = &enc_part.authtime;
244 enc_part.endtime = (ctx->expiryTime != 0)
245 ? ctx->expiryTime : KRB_TIME_FOREVER;
246 enc_part.renew_till = NULL;
247 enc_part.authorization_data = &authData;
249 major = freezeAttrContext(minor, ctx->initiatorName, server,
250 &session, &authData);
251 if (GSS_ERROR(major))
254 ASN1_MALLOC_ENCODE(EncTicketPart, encPartData.data, encPartData.length,
255 &enc_part, &len, code);
259 code = krb5_crypto_init(krbContext, &acceptorKey, 0, &krbCrypto);
263 code = krb5_encrypt_EncryptedData(krbContext,
273 ASN1_MALLOC_ENCODE(Ticket, ticketData.data, ticketData.length,
274 &ticket, &len, code);
278 ticket.server = server;
280 code = krb5_c_make_random_key(krbContext, ctx->encryptionType,
285 enc_part.flags = TKT_FLG_INITIAL;
286 enc_part.session = &session;
287 enc_part.client = ctx->initiatorName->krbPrincipal;
288 enc_part.times.authtime = time(NULL);
289 enc_part.times.starttime = enc_part.times.authtime;
290 enc_part.times.endtime = (ctx->expiryTime != 0)
293 enc_part.times.renew_till = 0;
295 major = freezeAttrContext(minor, ctx->initiatorName, server,
296 &session, &enc_part.authorization_data);
297 if (GSS_ERROR(major))
300 ticket.enc_part2 = &enc_part;
302 code = krb5_encrypt_tkt_part(krbContext, &acceptorKey, &ticket);
306 code = encode_krb5_ticket(&ticket, &ticketData);
309 #endif /* HAVE_HEIMDAL_VERSION */
311 creds.client = ctx->initiatorName->krbPrincipal;
312 creds.server = server;
313 #ifdef HAVE_HEIMDAL_VERSION
314 creds.session = session;
315 creds.times.authtime = enc_part.authtime;
316 creds.times.starttime = *enc_part.starttime;
317 creds.times.endtime = enc_part.endtime;
318 creds.times.renew_till = 0;
319 creds.flags.b = enc_part.flags;
320 creds.ticket = ticketData;
321 creds.authdata = authData;
323 creds.keyblock = session;
324 creds.times = enc_part.times;
325 creds.ticket_flags = enc_part.flags;
326 creds.ticket = *ticketData;
327 creds.authdata = enc_part.authorization_data;
330 code = krb5_auth_con_init(krbContext, &authContext);
334 code = krb5_auth_con_setflags(krbContext, authContext, 0);
338 #ifdef HAVE_HEIMDAL_VERSION
339 code = krb5_auth_con_setlocalsubkey(krbContext, authContext,
342 code = krb5_auth_con_setsendsubkey(krbContext, authContext,
348 code = krbMakeCred(krbContext, authContext, &creds, &credsData);
352 krbDataToGssBuffer(&credsData, credBuf);
355 #ifdef HAVE_HEIMDAL_VERSION
356 if (krbCrypto != NULL)
357 krb5_crypto_destroy(krbContext, krbCrypto);
358 free_AuthorizationData(&authData);
359 free_EncryptedData(&ticket.enc_part);
360 krb5_data_free(&ticketData);
361 krb5_data_free(&encPartData);
363 krb5_free_authdata(krbContext, enc_part.authorization_data);
364 if (ticket.enc_part.ciphertext.data != NULL)
365 GSSEAP_FREE(ticket.enc_part.ciphertext.data);
366 krb5_free_data(krbContext, ticketData);
368 krb5_free_keyblock_contents(krbContext, &session);
369 krb5_free_principal(krbContext, server);
370 krb5_free_keyblock_contents(krbContext, &acceptorKey);
371 krb5_auth_con_free(krbContext, authContext);
373 if (major == GSS_S_COMPLETE) {
375 major = (code != 0) ? GSS_S_FAILURE : GSS_S_COMPLETE;
382 isTicketGrantingServiceP(krb5_context krbContext GSSEAP_UNUSED,
383 krb5_const_principal principal)
385 if (KRB_PRINC_LENGTH(principal) == 2 &&
386 #ifdef HAVE_HEIMDAL_VERSION
387 strcmp(KRB_PRINC_NAME(principal)[0], "krbtgt") == 0
389 krb5_princ_component(krbContext, principal, 0)->length == 6 &&
390 memcmp(krb5_princ_component(krbContext,
391 principal, 0)->data, "krbtgt", 6) == 0
400 * Returns TRUE if the configuration variable reauth_use_ccache is
401 * set in krb5.conf for the eap_gss application and the client realm.
404 reauthUseCredsCache(krb5_context krbContext,
405 krb5_principal principal)
409 /* if reauth_use_ccache, use default credentials cache if ticket is for us */
410 krb5_appdefault_boolean(krbContext, "eap_gss",
411 KRB_PRINC_REALM(principal),
412 "reauth_use_ccache", 0, &reauthUseCCache);
414 return reauthUseCCache;
418 * Look in default credentials cache for reauthentication credentials,
422 getDefaultReauthCredentials(OM_uint32 *minor,
428 OM_uint32 major = GSS_S_CRED_UNAVAIL;
429 krb5_context krbContext = NULL;
430 krb5_error_code code = 0;
431 krb5_ccache ccache = NULL;
432 krb5_creds match = { 0 };
433 krb5_creds creds = { 0 };
435 GSSEAP_KRB_INIT(&krbContext);
437 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
438 GSSEAP_ASSERT(target != GSS_C_NO_NAME);
440 if (cred->name == GSS_C_NO_NAME ||
441 !reauthUseCredsCache(krbContext, cred->name->krbPrincipal))
444 match.client = cred->name->krbPrincipal;
445 match.server = target->krbPrincipal;
446 if (timeReq != 0 && timeReq != GSS_C_INDEFINITE)
447 match.times.endtime = now + timeReq;
449 code = krb5_cc_default(krbContext, &ccache);
453 code = krb5_cc_retrieve_cred(krbContext, ccache, 0, &match, &creds);
457 cred->flags |= CRED_FLAG_DEFAULT_CCACHE;
458 cred->krbCredCache = ccache;
461 major = gss_krb5_import_cred(minor, cred->krbCredCache, NULL, NULL,
465 if (major == GSS_S_CRED_UNAVAIL)
469 krb5_cc_close(krbContext, ccache);
470 krb5_free_cred_contents(krbContext, &creds);
476 * Returns TRUE if the credential handle's reauth credentials are
477 * valid or if we can use the default credentials cache. Credentials
478 * handle must be locked.
481 gssEapCanReauthP(gss_cred_id_t cred,
485 time_t now, expiryReq;
488 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
492 if (timeReq != GSS_C_INDEFINITE)
493 expiryReq += timeReq;
495 if (cred->krbCredCache != NULL && cred->expiryTime > expiryReq)
498 if (getDefaultReauthCredentials(&minor, cred, target,
499 now, timeReq) == GSS_S_COMPLETE)
506 * Store re-authentication (Kerberos) credentials in a credential handle.
507 * Credentials handle must be locked.
510 gssEapStoreReauthCreds(OM_uint32 *minor,
513 gss_buffer_t credBuf)
515 OM_uint32 major = GSS_S_COMPLETE;
516 krb5_error_code code;
517 krb5_context krbContext = NULL;
518 krb5_auth_context authContext = NULL;
519 krb5_data credData = { 0 };
520 krb5_creds **creds = NULL;
521 krb5_principal canonPrinc;
522 krb5_principal ccPrinc = NULL;
525 if (credBuf->length == 0 || cred == GSS_C_NO_CREDENTIAL)
526 return GSS_S_COMPLETE;
528 GSSEAP_KRB_INIT(&krbContext);
530 code = krb5_auth_con_init(krbContext, &authContext);
534 code = krb5_auth_con_setflags(krbContext, authContext, 0);
538 code = krb5_auth_con_setrecvsubkey(krbContext, authContext,
543 gssBufferToKrbData(credBuf, &credData);
545 code = krb5_rd_cred(krbContext, authContext, &credData, &creds, NULL);
549 if (creds == NULL || creds[0] == NULL)
552 code = krb5_copy_principal(krbContext, creds[0]->client, &canonPrinc);
556 krb5_free_principal(krbContext, cred->name->krbPrincipal);
557 cred->name->krbPrincipal = canonPrinc;
559 if (creds[0]->times.endtime == KRB_TIME_FOREVER)
560 cred->expiryTime = 0;
562 cred->expiryTime = creds[0]->times.endtime;
564 if (cred->krbCredCache == NULL) {
565 if (reauthUseCredsCache(krbContext, creds[0]->client) &&
566 krb5_cc_default(krbContext, &cred->krbCredCache) == 0)
567 cred->flags |= CRED_FLAG_DEFAULT_CCACHE;
570 * If we already have an associated credentials cache, possibly from
571 * the last time we stored a reauthentication credential, then we
572 * need to clear it out and release the associated GSS credential.
574 if (cred->flags & CRED_FLAG_DEFAULT_CCACHE) {
575 krb5_cc_remove_cred(krbContext, cred->krbCredCache, 0, creds[0]);
577 krb5_cc_destroy(krbContext, cred->krbCredCache);
578 cred->krbCredCache = NULL;
580 gssReleaseCred(minor, &cred->reauthCred);
583 if (cred->krbCredCache == NULL) {
584 code = krb5_cc_new_unique(krbContext, "MEMORY", NULL, &cred->krbCredCache);
589 if ((cred->flags & CRED_FLAG_DEFAULT_CCACHE) == 0 ||
590 krb5_cc_get_principal(krbContext, cred->krbCredCache, &ccPrinc) != 0) {
591 code = krb5_cc_initialize(krbContext, cred->krbCredCache,
597 for (i = 0; creds[i] != NULL; i++) {
598 krb5_creds kcred = *(creds[i]);
601 * Swap in the acceptor name the client asked for so
602 * get_credentials() works. We're making the assumption that
603 * any service tickets returned are for us. We'll need to
604 * reflect some more on whether that is a safe assumption.
606 if (!isTicketGrantingServiceP(krbContext, kcred.server))
607 kcred.server = ctx->acceptorName->krbPrincipal;
609 code = krb5_cc_store_cred(krbContext, cred->krbCredCache, &kcred);
614 major = gss_krb5_import_cred(minor, cred->krbCredCache, NULL, NULL,
616 if (GSS_ERROR(major))
622 krb5_free_principal(krbContext, ccPrinc);
623 krb5_auth_con_free(krbContext, authContext);
625 for (i = 0; creds[i] != NULL; i++)
626 krb5_free_creds(krbContext, creds[i]);
629 if (major == GSS_S_COMPLETE)
630 major = *minor ? GSS_S_FAILURE : GSS_S_COMPLETE;
635 #ifndef HAVE_HEIMDAL_VERSION
636 static gss_buffer_desc radiusAvpKrbAttr = {
637 sizeof("urn:authdata-radius-avp") - 1, "urn:authdata-radius-avp"
642 * Unfortunately extracting an AD-KDCIssued authorization data element
643 * is pretty implementation-dependent. It's not possible to verify the
644 * signature ourselves because the ticket session key is not exposed
645 * outside GSS. In an ideal world, all AD-KDCIssued elements would be
646 * verified by the Kerberos library and authentication would fail if
647 * verification failed. We're not quite there yet and as a result have
648 * to go through some hoops to get this to work. The alternative would
649 * be to sign the authorization data with our long-term key, but it
650 * seems a pity to compromise the design because of current implementation
653 * (Specifically, the hoops involve a libkrb5 authorisation data plugin
654 * that exposes the verified and serialised attribute context through
655 * the Kerberos GSS mechanism's naming extensions API.)
658 defrostAttrContext(OM_uint32 *minor,
659 #ifdef HAVE_HEIMDAL_VERSION
660 gss_ctx_id_t glueContext,
666 OM_uint32 major, tmpMinor;
667 #ifdef HAVE_HEIMDAL_VERSION
668 gss_OID_desc oid = { 0 };
669 gss_buffer_set_t authData = GSS_C_NO_BUFFER_SET;
671 gss_buffer_desc authData = GSS_C_EMPTY_BUFFER;
672 gss_buffer_desc authDataDisplay = GSS_C_EMPTY_BUFFER;
674 int authenticated, complete;
677 #ifdef HAVE_HEIMDAL_VERSION
678 major = composeOid(minor,
679 GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X->elements,
680 GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X->length,
681 KRB5_AUTHDATA_RADIUS_AVP, &oid);
682 if (GSS_ERROR(major))
685 /* XXX we are assuming that this verifies AD-KDCIssued signature */
686 major = gssInquireSecContextByOid(minor, glueContext,
688 if (major == GSS_S_COMPLETE) {
689 if (authData == GSS_C_NO_BUFFER_SET || authData->count != 1)
690 major = GSS_S_FAILURE;
692 major = gssEapImportAttrContext(minor, authData->elements, mechName);
693 } else if (major == GSS_S_FAILURE && *minor == ENOENT) {
694 /* This is the equivalent of GSS_S_UNAVAILABLE for MIT attr APIs */
696 major = GSS_S_COMPLETE;
699 gss_release_buffer_set(&tmpMinor, &authData);
700 GSSEAP_FREE(oid.elements);
702 major = gssGetNameAttribute(minor, glueName, &radiusAvpKrbAttr,
703 &authenticated, &complete,
704 &authData, &authDataDisplay, &more);
705 if (major == GSS_S_COMPLETE) {
706 if (authenticated == 0)
707 major = GSS_S_BAD_NAME;
709 major = gssEapImportAttrContext(minor, &authData, mechName);
710 } else if (major == GSS_S_UNAVAILABLE) {
711 major = GSS_S_COMPLETE;
714 gss_release_buffer(&tmpMinor, &authData);
715 gss_release_buffer(&tmpMinor, &authDataDisplay);
716 #endif /* HAVE_HEIMDAL_VERSION */
722 * Convert a mechanism glue to an EAP mechanism name by displaying and
723 * importing it. This also handles the RADIUS attributes.
726 gssEapGlueToMechName(OM_uint32 *minor,
729 gss_name_t *pMechName)
731 OM_uint32 major, tmpMinor;
732 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
734 *pMechName = GSS_C_NO_NAME;
736 major = gssDisplayName(minor, glueName, &nameBuf, NULL);
737 if (GSS_ERROR(major))
740 major = gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
741 ctx->mechanismUsed, pMechName);
742 if (GSS_ERROR(major))
745 major = defrostAttrContext(minor,
746 #ifdef HAVE_HEIMDAL_VERSION
752 if (GSS_ERROR(major))
756 if (GSS_ERROR(major)) {
757 gssReleaseName(&tmpMinor, pMechName);
758 *pMechName = GSS_C_NO_NAME;
761 gss_release_buffer(&tmpMinor, &nameBuf);
767 * Convert an EAP mechanism name to a mechanism glue name by displaying
771 gssEapMechToGlueName(OM_uint32 *minor,
773 gss_name_t *pGlueName)
775 OM_uint32 major, tmpMinor;
776 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
778 *pGlueName = GSS_C_NO_NAME;
780 major = gssEapDisplayName(minor, mechName, &nameBuf, NULL);
781 if (GSS_ERROR(major))
784 major = gssImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
786 if (GSS_ERROR(major))
790 gss_release_buffer(&tmpMinor, &nameBuf);
796 * Suck out the analgous elements of a Kerberos GSS context into an EAP
797 * one so that the application doesn't know the difference.
800 gssEapReauthComplete(OM_uint32 *minor,
802 gss_cred_id_t cred GSSEAP_UNUSED,
806 OM_uint32 major, tmpMinor;
807 gss_buffer_set_t keyData = GSS_C_NO_BUFFER_SET;
808 krb5_context krbContext = NULL;
809 #ifdef HAVE_HEIMDAL_VERSION
810 krb5_storage *sp = NULL;
813 GSSEAP_KRB_INIT(&krbContext);
815 if (!oidEqual(mech, gss_mech_krb5)) {
816 major = GSS_S_BAD_MECH;
820 /* Get the raw subsession key and encryption type */
821 #ifdef HAVE_HEIMDAL_VERSION
822 #define KRB_GSS_SUBKEY_COUNT 1 /* encoded session key */
823 major = gssInquireSecContextByOid(minor, ctx->reauthCtx,
824 GSS_KRB5_GET_SUBKEY_X, &keyData);
826 #define KRB_GSS_SUBKEY_COUNT 2 /* raw session key, enctype OID */
827 major = gssInquireSecContextByOid(minor, ctx->reauthCtx,
828 GSS_C_INQ_SSPI_SESSION_KEY, &keyData);
830 if (GSS_ERROR(major))
833 if (keyData == GSS_C_NO_BUFFER_SET || keyData->count < KRB_GSS_SUBKEY_COUNT) {
834 *minor = GSSEAP_KEY_UNAVAILABLE;
835 major = GSS_S_FAILURE;
839 #ifdef HAVE_HEIMDAL_VERSION
840 sp = krb5_storage_from_mem(keyData->elements[0].value,
841 keyData->elements[0].length);
844 major = GSS_S_FAILURE;
848 *minor = krb5_ret_keyblock(sp, &ctx->rfc3961Key);
850 major = GSS_S_FAILURE;
858 oid.length = keyData->elements[1].length;
859 oid.elements = keyData->elements[1].value;
861 /* GSS_KRB5_SESSION_KEY_ENCTYPE_OID */
862 major = decomposeOid(minor,
863 "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02\x04",
865 if (GSS_ERROR(major))
868 ctx->encryptionType = suffix;
874 KRB_KEY_LENGTH(&key) = keyData->elements[0].length;
875 KRB_KEY_DATA(&key) = keyData->elements[0].value;
876 KRB_KEY_TYPE(&key) = ctx->encryptionType;
878 *minor = krb5_copy_keyblock_contents(krbContext,
879 &key, &ctx->rfc3961Key);
881 major = GSS_S_FAILURE;
885 #endif /* HAVE_HEIMDAL_VERSION */
887 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
889 if (GSS_ERROR(major))
892 if (timeRec != GSS_C_INDEFINITE)
893 ctx->expiryTime = time(NULL) + timeRec;
895 /* Initialize our sequence state */
896 major = sequenceInit(minor,
897 &ctx->seqState, ctx->recvSeq,
898 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
899 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
901 if (GSS_ERROR(major))
904 major = GSS_S_COMPLETE;
907 #ifdef HAVE_HEIMDAL_VERSION
909 krb5_storage_free(sp);
911 gss_release_buffer_set(&tmpMinor, &keyData);
917 * The remainder of this file consists of wrappers so we can call into the
918 * mechanism glue without calling ourselves.
921 (*gssInitSecContextNext)(OM_uint32 *,
928 gss_channel_bindings_t,
936 (*gssAcceptSecContextNext)(OM_uint32 *,
940 gss_channel_bindings_t,
949 (*gssReleaseCredNext)(OM_uint32 *, gss_cred_id_t *);
952 (*gssReleaseNameNext)(OM_uint32 *, gss_name_t *);
955 (*gssInquireSecContextByOidNext)(OM_uint32 *,
961 (*gssDeleteSecContextNext)(OM_uint32 *,
966 (*gssDisplayNameNext)(OM_uint32 *,
972 (*gssImportNameNext)(OM_uint32 *,
978 (*gssStoreCredNext)(OM_uint32 *,
988 (*gssGetNameAttributeNext)(OM_uint32 *,
997 #define NEXT_SYMBOL(local, global) do { \
998 ((local) = dlsym(RTLD_NEXT, (global))); \
999 if ((local) == NULL) { \
1000 *minor = GSSEAP_NO_MECHGLUE_SYMBOL; \
1001 major = GSS_S_UNAVAILABLE; \
1002 /* but continue */ \
1007 gssEapReauthInitialize(OM_uint32 *minor)
1009 OM_uint32 major = GSS_S_COMPLETE;
1011 NEXT_SYMBOL(gssInitSecContextNext, "gss_init_sec_context");
1012 NEXT_SYMBOL(gssAcceptSecContextNext, "gss_accept_sec_context");
1013 NEXT_SYMBOL(gssReleaseCredNext, "gss_release_cred");
1014 NEXT_SYMBOL(gssReleaseNameNext, "gss_release_name");
1015 NEXT_SYMBOL(gssInquireSecContextByOidNext, "gss_inquire_sec_context_by_oid");
1016 NEXT_SYMBOL(gssDeleteSecContextNext, "gss_delete_sec_context");
1017 NEXT_SYMBOL(gssDisplayNameNext, "gss_display_name");
1018 NEXT_SYMBOL(gssImportNameNext, "gss_import_name");
1019 NEXT_SYMBOL(gssStoreCredNext, "gss_store_cred");
1020 #ifndef HAVE_HEIMDAL_VERSION
1021 NEXT_SYMBOL(gssGetNameAttributeNext, "gss_get_name_attribute");
1028 gssInitSecContext(OM_uint32 *minor,
1030 gss_ctx_id_t *context_handle,
1031 gss_name_t target_name,
1033 OM_uint32 req_flags,
1035 gss_channel_bindings_t input_chan_bindings,
1036 gss_buffer_t input_token,
1037 gss_OID *actual_mech_type,
1038 gss_buffer_t output_token,
1039 OM_uint32 *ret_flags,
1040 OM_uint32 *time_rec)
1042 if (gssInitSecContextNext == NULL) {
1043 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1044 return GSS_S_UNAVAILABLE;
1047 return gssInitSecContextNext(minor, cred, context_handle,
1048 target_name, mech_type, req_flags,
1049 time_req, input_chan_bindings,
1050 input_token, actual_mech_type,
1051 output_token, ret_flags, time_rec);
1055 gssAcceptSecContext(OM_uint32 *minor,
1056 gss_ctx_id_t *context_handle,
1058 gss_buffer_t input_token,
1059 gss_channel_bindings_t input_chan_bindings,
1060 gss_name_t *src_name,
1062 gss_buffer_t output_token,
1063 OM_uint32 *ret_flags,
1064 OM_uint32 *time_rec,
1065 gss_cred_id_t *delegated_cred_handle)
1067 if (gssAcceptSecContextNext == NULL) {
1068 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1069 return GSS_S_UNAVAILABLE;
1072 return gssAcceptSecContextNext(minor, context_handle, cred,
1073 input_token, input_chan_bindings,
1074 src_name, mech_type, output_token,
1075 ret_flags, time_rec, delegated_cred_handle);
1079 gssReleaseCred(OM_uint32 *minor,
1080 gss_cred_id_t *cred_handle)
1082 if (gssReleaseCredNext == NULL) {
1083 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1084 return GSS_S_UNAVAILABLE;
1087 return gssReleaseCredNext(minor, cred_handle);
1091 gssReleaseName(OM_uint32 *minor,
1094 if (gssReleaseName == NULL) {
1095 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1096 return GSS_S_UNAVAILABLE;
1099 return gssReleaseNameNext(minor, name);
1103 gssDeleteSecContext(OM_uint32 *minor,
1104 gss_ctx_id_t *context_handle,
1105 gss_buffer_t output_token)
1107 if (gssDeleteSecContextNext == NULL) {
1108 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1109 return GSS_S_UNAVAILABLE;
1112 return gssDeleteSecContextNext(minor, context_handle, output_token);
1116 gssDisplayName(OM_uint32 *minor,
1118 gss_buffer_t buffer,
1121 if (gssDisplayNameNext == NULL) {
1122 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1123 return GSS_S_UNAVAILABLE;
1126 return gssDisplayNameNext(minor, name, buffer, name_type);
1130 gssImportName(OM_uint32 *minor,
1131 gss_buffer_t buffer,
1135 if (gssImportNameNext == NULL) {
1136 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1137 return GSS_S_UNAVAILABLE;
1140 return gssImportNameNext(minor, buffer, name_type, name);
1144 gssInquireSecContextByOid(OM_uint32 *minor,
1145 const gss_ctx_id_t context_handle,
1146 const gss_OID desired_object,
1147 gss_buffer_set_t *data_set)
1149 if (gssInquireSecContextByOidNext == NULL) {
1150 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1151 return GSS_S_UNAVAILABLE;
1154 return gssInquireSecContextByOidNext(minor, context_handle,
1155 desired_object, data_set);
1159 gssStoreCred(OM_uint32 *minor,
1160 const gss_cred_id_t input_cred_handle,
1161 gss_cred_usage_t input_usage,
1162 const gss_OID desired_mech,
1163 OM_uint32 overwrite_cred,
1164 OM_uint32 default_cred,
1165 gss_OID_set *elements_stored,
1166 gss_cred_usage_t *cred_usage_stored)
1168 if (gssStoreCredNext == NULL) {
1169 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1170 return GSS_S_UNAVAILABLE;
1173 return gssStoreCredNext(minor, input_cred_handle, input_usage,
1174 desired_mech, overwrite_cred, default_cred,
1175 elements_stored, cred_usage_stored);
1179 gssGetNameAttribute(OM_uint32 *minor,
1185 gss_buffer_t display_value,
1188 if (gssGetNameAttributeNext == NULL) {
1189 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1190 return GSS_S_UNAVAILABLE;
1193 return gssGetNameAttributeNext(minor, name, attr, authenticated, complete,
1194 value, display_value, more);