2 * Copyright (c) 2011, JANET(UK)
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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 if (ctx->acceptorName == GSS_C_NO_NAME) {
218 *minor = GSSEAP_NO_ACCEPTOR_NAME;
219 return GSS_S_UNAVAILABLE;
222 GSSEAP_KRB_INIT(&krbContext);
224 code = getAcceptorKey(krbContext, ctx, cred, &server, &acceptorKey);
227 return GSS_S_UNAVAILABLE;
231 * Generate a random session key to place in the ticket and
232 * sign the "KDC-Issued" authorization data element.
234 #ifdef HAVE_HEIMDAL_VERSION
235 ticket.realm = server->realm;
236 ticket.sname = server->name;
238 code = krb5_generate_random_keyblock(krbContext, ctx->encryptionType,
243 enc_part.flags.initial = 1;
244 enc_part.key = session;
245 enc_part.crealm = ctx->initiatorName->krbPrincipal->realm;
246 enc_part.cname = ctx->initiatorName->krbPrincipal->name;
247 enc_part.authtime = time(NULL);
248 enc_part.starttime = &enc_part.authtime;
249 enc_part.endtime = (ctx->expiryTime != 0)
250 ? ctx->expiryTime : KRB_TIME_FOREVER;
251 enc_part.renew_till = NULL;
252 enc_part.authorization_data = &authData;
254 major = freezeAttrContext(minor, ctx->initiatorName, server,
255 &session, &authData);
256 if (GSS_ERROR(major))
259 ASN1_MALLOC_ENCODE(EncTicketPart, encPartData.data, encPartData.length,
260 &enc_part, &len, code);
264 code = krb5_crypto_init(krbContext, &acceptorKey, 0, &krbCrypto);
268 code = krb5_encrypt_EncryptedData(krbContext,
278 ASN1_MALLOC_ENCODE(Ticket, ticketData.data, ticketData.length,
279 &ticket, &len, code);
283 ticket.server = server;
285 code = krb5_c_make_random_key(krbContext, ctx->encryptionType,
290 enc_part.flags = TKT_FLG_INITIAL;
291 enc_part.session = &session;
292 enc_part.client = ctx->initiatorName->krbPrincipal;
293 enc_part.times.authtime = time(NULL);
294 enc_part.times.starttime = enc_part.times.authtime;
295 enc_part.times.endtime = (ctx->expiryTime != 0)
298 enc_part.times.renew_till = 0;
300 major = freezeAttrContext(minor, ctx->initiatorName, server,
301 &session, &enc_part.authorization_data);
302 if (GSS_ERROR(major))
305 ticket.enc_part2 = &enc_part;
307 code = krb5_encrypt_tkt_part(krbContext, &acceptorKey, &ticket);
311 code = encode_krb5_ticket(&ticket, &ticketData);
314 #endif /* HAVE_HEIMDAL_VERSION */
316 creds.client = ctx->initiatorName->krbPrincipal;
317 creds.server = server;
318 #ifdef HAVE_HEIMDAL_VERSION
319 creds.session = session;
320 creds.times.authtime = enc_part.authtime;
321 creds.times.starttime = *enc_part.starttime;
322 creds.times.endtime = enc_part.endtime;
323 creds.times.renew_till = 0;
324 creds.flags.b = enc_part.flags;
325 creds.ticket = ticketData;
326 creds.authdata = authData;
328 creds.keyblock = session;
329 creds.times = enc_part.times;
330 creds.ticket_flags = enc_part.flags;
331 creds.ticket = *ticketData;
332 creds.authdata = enc_part.authorization_data;
335 code = krb5_auth_con_init(krbContext, &authContext);
339 code = krb5_auth_con_setflags(krbContext, authContext, 0);
343 #ifdef HAVE_HEIMDAL_VERSION
344 code = krb5_auth_con_setlocalsubkey(krbContext, authContext,
347 code = krb5_auth_con_setsendsubkey(krbContext, authContext,
353 code = krbMakeCred(krbContext, authContext, &creds, &credsData);
357 krbDataToGssBuffer(&credsData, credBuf);
360 #ifdef HAVE_HEIMDAL_VERSION
361 if (krbCrypto != NULL)
362 krb5_crypto_destroy(krbContext, krbCrypto);
363 free_AuthorizationData(&authData);
364 free_EncryptedData(&ticket.enc_part);
365 krb5_data_free(&ticketData);
366 krb5_data_free(&encPartData);
368 krb5_free_authdata(krbContext, enc_part.authorization_data);
369 if (ticket.enc_part.ciphertext.data != NULL)
370 GSSEAP_FREE(ticket.enc_part.ciphertext.data);
371 krb5_free_data(krbContext, ticketData);
373 krb5_free_keyblock_contents(krbContext, &session);
374 krb5_free_principal(krbContext, server);
375 krb5_free_keyblock_contents(krbContext, &acceptorKey);
376 krb5_auth_con_free(krbContext, authContext);
378 if (major == GSS_S_COMPLETE) {
380 major = (code != 0) ? GSS_S_FAILURE : GSS_S_COMPLETE;
387 isTicketGrantingServiceP(krb5_context krbContext GSSEAP_UNUSED,
388 krb5_const_principal principal)
390 if (KRB_PRINC_LENGTH(principal) == 2 &&
391 #ifdef HAVE_HEIMDAL_VERSION
392 strcmp(KRB_PRINC_NAME(principal)[0], "krbtgt") == 0
394 krb5_princ_component(krbContext, principal, 0)->length == 6 &&
395 memcmp(krb5_princ_component(krbContext,
396 principal, 0)->data, "krbtgt", 6) == 0
405 * Returns TRUE if the configuration variable reauth_use_ccache is
406 * set in krb5.conf for the eap_gss application and the client realm.
409 reauthUseCredsCache(krb5_context krbContext,
410 krb5_principal principal)
414 /* if reauth_use_ccache, use default credentials cache if ticket is for us */
415 krb5_appdefault_boolean(krbContext, "eap_gss",
416 KRB_PRINC_REALM(principal),
417 "reauth_use_ccache", 0, &reauthUseCCache);
419 return reauthUseCCache;
423 * Look in default credentials cache for reauthentication credentials,
427 getDefaultReauthCredentials(OM_uint32 *minor,
433 OM_uint32 major = GSS_S_CRED_UNAVAIL;
434 krb5_context krbContext = NULL;
435 krb5_error_code code = 0;
436 krb5_ccache ccache = NULL;
437 krb5_creds match = { 0 };
438 krb5_creds creds = { 0 };
440 GSSEAP_KRB_INIT(&krbContext);
442 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
443 GSSEAP_ASSERT(target != GSS_C_NO_NAME);
445 if (cred->name == GSS_C_NO_NAME ||
446 !reauthUseCredsCache(krbContext, cred->name->krbPrincipal))
449 match.client = cred->name->krbPrincipal;
450 match.server = target->krbPrincipal;
451 if (timeReq != 0 && timeReq != GSS_C_INDEFINITE)
452 match.times.endtime = now + timeReq;
454 code = krb5_cc_default(krbContext, &ccache);
458 code = krb5_cc_retrieve_cred(krbContext, ccache, 0, &match, &creds);
462 cred->flags |= CRED_FLAG_DEFAULT_CCACHE;
463 cred->krbCredCache = ccache;
466 major = gss_krb5_import_cred(minor, cred->krbCredCache, NULL, NULL,
470 if (major == GSS_S_CRED_UNAVAIL)
474 krb5_cc_close(krbContext, ccache);
475 krb5_free_cred_contents(krbContext, &creds);
481 * Returns TRUE if the credential handle's reauth credentials are
482 * valid or if we can use the default credentials cache. Credentials
483 * handle must be locked.
486 gssEapCanReauthP(gss_cred_id_t cred,
490 time_t now, expiryReq;
493 if (cred == GSS_C_NO_CREDENTIAL)
498 if (timeReq != GSS_C_INDEFINITE)
499 expiryReq += timeReq;
501 if (cred->krbCredCache != NULL && cred->expiryTime > expiryReq)
504 if (getDefaultReauthCredentials(&minor, cred, target,
505 now, timeReq) == GSS_S_COMPLETE)
512 * Store re-authentication (Kerberos) credentials in a credential handle.
513 * Credentials handle must be locked.
516 gssEapStoreReauthCreds(OM_uint32 *minor,
519 gss_buffer_t credBuf)
521 OM_uint32 major = GSS_S_COMPLETE;
522 krb5_error_code code;
523 krb5_context krbContext = NULL;
524 krb5_auth_context authContext = NULL;
525 krb5_data credData = { 0 };
526 krb5_creds **creds = NULL;
527 krb5_principal canonPrinc;
528 krb5_principal ccPrinc = NULL;
531 if (credBuf->length == 0 || cred == GSS_C_NO_CREDENTIAL)
532 return GSS_S_COMPLETE;
534 GSSEAP_KRB_INIT(&krbContext);
536 code = krb5_auth_con_init(krbContext, &authContext);
540 code = krb5_auth_con_setflags(krbContext, authContext, 0);
544 code = krb5_auth_con_setrecvsubkey(krbContext, authContext,
549 gssBufferToKrbData(credBuf, &credData);
551 code = krb5_rd_cred(krbContext, authContext, &credData, &creds, NULL);
555 if (creds == NULL || creds[0] == NULL)
558 code = krb5_copy_principal(krbContext, creds[0]->client, &canonPrinc);
562 krb5_free_principal(krbContext, cred->name->krbPrincipal);
563 cred->name->krbPrincipal = canonPrinc;
565 if (creds[0]->times.endtime == KRB_TIME_FOREVER)
566 cred->expiryTime = 0;
568 cred->expiryTime = creds[0]->times.endtime;
570 if (cred->krbCredCache == NULL) {
571 if (reauthUseCredsCache(krbContext, creds[0]->client) &&
572 krb5_cc_default(krbContext, &cred->krbCredCache) == 0)
573 cred->flags |= CRED_FLAG_DEFAULT_CCACHE;
576 * If we already have an associated credentials cache, possibly from
577 * the last time we stored a reauthentication credential, then we
578 * need to clear it out and release the associated GSS credential.
580 if (cred->flags & CRED_FLAG_DEFAULT_CCACHE) {
581 krb5_cc_remove_cred(krbContext, cred->krbCredCache, 0, creds[0]);
583 krb5_cc_destroy(krbContext, cred->krbCredCache);
584 cred->krbCredCache = NULL;
586 gssReleaseCred(minor, &cred->reauthCred);
589 if (cred->krbCredCache == NULL) {
590 code = krb5_cc_new_unique(krbContext, "MEMORY", NULL, &cred->krbCredCache);
595 if ((cred->flags & CRED_FLAG_DEFAULT_CCACHE) == 0 ||
596 krb5_cc_get_principal(krbContext, cred->krbCredCache, &ccPrinc) != 0) {
597 code = krb5_cc_initialize(krbContext, cred->krbCredCache,
603 for (i = 0; creds[i] != NULL; i++) {
604 krb5_creds kcred = *(creds[i]);
607 * Swap in the acceptor name the client asked for so
608 * get_credentials() works. We're making the assumption that
609 * any service tickets returned are for us. We'll need to
610 * reflect some more on whether that is a safe assumption.
612 if (!isTicketGrantingServiceP(krbContext, kcred.server))
613 kcred.server = ctx->acceptorName->krbPrincipal;
615 code = krb5_cc_store_cred(krbContext, cred->krbCredCache, &kcred);
620 major = gss_krb5_import_cred(minor, cred->krbCredCache, NULL, NULL,
622 if (GSS_ERROR(major))
628 krb5_free_principal(krbContext, ccPrinc);
629 krb5_auth_con_free(krbContext, authContext);
631 for (i = 0; creds[i] != NULL; i++)
632 krb5_free_creds(krbContext, creds[i]);
635 if (major == GSS_S_COMPLETE)
636 major = *minor ? GSS_S_FAILURE : GSS_S_COMPLETE;
641 #ifndef HAVE_HEIMDAL_VERSION
642 static gss_buffer_desc radiusAvpKrbAttr = {
643 sizeof("urn:authdata-aaa-radius") - 1, "urn:authdata-aaa-radius"
648 * Unfortunately extracting an AD-KDCIssued authorization data element
649 * is pretty implementation-dependent. It's not possible to verify the
650 * signature ourselves because the ticket session key is not exposed
651 * outside GSS. In an ideal world, all AD-KDCIssued elements would be
652 * verified by the Kerberos library and authentication would fail if
653 * verification failed. We're not quite there yet and as a result have
654 * to go through some hoops to get this to work. The alternative would
655 * be to sign the authorization data with our long-term key, but it
656 * seems a pity to compromise the design because of current implementation
659 * (Specifically, the hoops involve a libkrb5 authorisation data plugin
660 * that exposes the verified and serialised attribute context through
661 * the Kerberos GSS mechanism's naming extensions API.)
664 defrostAttrContext(OM_uint32 *minor,
665 #ifdef HAVE_HEIMDAL_VERSION
666 gss_ctx_id_t glueContext,
672 OM_uint32 major, tmpMinor;
673 #ifdef HAVE_HEIMDAL_VERSION
674 gss_OID_desc oid = { 0 };
675 gss_buffer_set_t authData = GSS_C_NO_BUFFER_SET;
677 gss_buffer_desc authData = GSS_C_EMPTY_BUFFER;
678 gss_buffer_desc authDataDisplay = GSS_C_EMPTY_BUFFER;
680 int authenticated, complete;
683 #ifdef HAVE_HEIMDAL_VERSION
684 major = composeOid(minor,
685 GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X->elements,
686 GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X->length,
687 KRB5_AUTHDATA_RADIUS_AVP, &oid);
688 if (GSS_ERROR(major))
691 /* XXX we are assuming that this verifies AD-KDCIssued signature */
692 major = gssInquireSecContextByOid(minor, glueContext,
694 if (major == GSS_S_COMPLETE) {
695 if (authData == GSS_C_NO_BUFFER_SET || authData->count != 1)
696 major = GSS_S_FAILURE;
698 major = gssEapImportAttrContext(minor, authData->elements, mechName);
699 } else if (major == GSS_S_FAILURE && *minor == ENOENT) {
700 /* This is the equivalent of GSS_S_UNAVAILABLE for MIT attr APIs */
702 major = GSS_S_COMPLETE;
705 gss_release_buffer_set(&tmpMinor, &authData);
706 GSSEAP_FREE(oid.elements);
708 major = gssGetNameAttribute(minor, glueName, &radiusAvpKrbAttr,
709 &authenticated, &complete,
710 &authData, &authDataDisplay, &more);
711 if (major == GSS_S_COMPLETE) {
712 if (authenticated == 0)
713 major = GSS_S_BAD_NAME;
715 major = gssEapImportAttrContext(minor, &authData, mechName);
716 } else if (major == GSS_S_UNAVAILABLE) {
717 major = GSS_S_COMPLETE;
720 gss_release_buffer(&tmpMinor, &authData);
721 gss_release_buffer(&tmpMinor, &authDataDisplay);
722 #endif /* HAVE_HEIMDAL_VERSION */
728 * Convert a mechanism glue to an EAP mechanism name by displaying and
729 * importing it. This also handles the RADIUS attributes.
732 gssEapGlueToMechName(OM_uint32 *minor,
735 gss_name_t *pMechName)
737 OM_uint32 major, tmpMinor;
738 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
740 *pMechName = GSS_C_NO_NAME;
742 major = gssDisplayName(minor, glueName, &nameBuf, NULL);
743 if (GSS_ERROR(major))
746 major = gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
747 ctx->mechanismUsed, pMechName);
748 if (GSS_ERROR(major))
751 major = defrostAttrContext(minor,
752 #ifdef HAVE_HEIMDAL_VERSION
758 if (GSS_ERROR(major))
762 if (GSS_ERROR(major)) {
763 gssReleaseName(&tmpMinor, pMechName);
764 *pMechName = GSS_C_NO_NAME;
767 gss_release_buffer(&tmpMinor, &nameBuf);
773 * Convert an EAP mechanism name to a mechanism glue name by displaying
777 gssEapMechToGlueName(OM_uint32 *minor,
779 gss_name_t *pGlueName)
781 OM_uint32 major, tmpMinor;
782 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
784 *pGlueName = GSS_C_NO_NAME;
786 major = gssEapDisplayName(minor, mechName, &nameBuf, NULL);
787 if (GSS_ERROR(major))
790 major = gssImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
792 if (GSS_ERROR(major))
796 gss_release_buffer(&tmpMinor, &nameBuf);
802 * Suck out the analgous elements of a Kerberos GSS context into an EAP
803 * one so that the application doesn't know the difference.
806 gssEapReauthComplete(OM_uint32 *minor,
808 gss_cred_id_t cred GSSEAP_UNUSED,
812 OM_uint32 major, tmpMinor;
813 gss_buffer_set_t keyData = GSS_C_NO_BUFFER_SET;
814 krb5_context krbContext = NULL;
815 #ifdef HAVE_HEIMDAL_VERSION
816 krb5_storage *sp = NULL;
819 GSSEAP_KRB_INIT(&krbContext);
821 if (!oidEqual(mech, gss_mech_krb5)) {
822 major = GSS_S_BAD_MECH;
826 /* Get the raw subsession key and encryption type */
827 #ifdef HAVE_HEIMDAL_VERSION
828 #define KRB_GSS_SUBKEY_COUNT 1 /* encoded session key */
829 major = gssInquireSecContextByOid(minor, ctx->reauthCtx,
830 GSS_KRB5_GET_SUBKEY_X, &keyData);
832 #define KRB_GSS_SUBKEY_COUNT 2 /* raw session key, enctype OID */
833 major = gssInquireSecContextByOid(minor, ctx->reauthCtx,
834 GSS_C_INQ_SSPI_SESSION_KEY, &keyData);
836 if (GSS_ERROR(major))
839 if (keyData == GSS_C_NO_BUFFER_SET || keyData->count < KRB_GSS_SUBKEY_COUNT) {
840 *minor = GSSEAP_KEY_UNAVAILABLE;
841 major = GSS_S_FAILURE;
845 #ifdef HAVE_HEIMDAL_VERSION
846 sp = krb5_storage_from_mem(keyData->elements[0].value,
847 keyData->elements[0].length);
850 major = GSS_S_FAILURE;
854 *minor = krb5_ret_keyblock(sp, &ctx->rfc3961Key);
856 major = GSS_S_FAILURE;
864 oid.length = keyData->elements[1].length;
865 oid.elements = keyData->elements[1].value;
867 /* GSS_KRB5_SESSION_KEY_ENCTYPE_OID */
868 major = decomposeOid(minor,
869 "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02\x04",
871 if (GSS_ERROR(major))
874 ctx->encryptionType = suffix;
880 KRB_KEY_LENGTH(&key) = keyData->elements[0].length;
881 KRB_KEY_DATA(&key) = keyData->elements[0].value;
882 KRB_KEY_TYPE(&key) = ctx->encryptionType;
884 *minor = krb5_copy_keyblock_contents(krbContext,
885 &key, &ctx->rfc3961Key);
887 major = GSS_S_FAILURE;
891 #endif /* HAVE_HEIMDAL_VERSION */
893 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
895 if (GSS_ERROR(major))
898 if (timeRec != GSS_C_INDEFINITE)
899 ctx->expiryTime = time(NULL) + timeRec;
901 /* Initialize our sequence state */
902 major = sequenceInit(minor,
903 &ctx->seqState, ctx->recvSeq,
904 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
905 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
907 if (GSS_ERROR(major))
910 major = GSS_S_COMPLETE;
913 #ifdef HAVE_HEIMDAL_VERSION
915 krb5_storage_free(sp);
917 gss_release_buffer_set(&tmpMinor, &keyData);
923 * The remainder of this file consists of wrappers so we can call into the
924 * mechanism glue without calling ourselves.
927 (*gssInitSecContextNext)(OM_uint32 *,
934 gss_channel_bindings_t,
942 (*gssAcceptSecContextNext)(OM_uint32 *,
946 gss_channel_bindings_t,
955 (*gssReleaseCredNext)(OM_uint32 *, gss_cred_id_t *);
958 (*gssReleaseNameNext)(OM_uint32 *, gss_name_t *);
961 (*gssInquireSecContextByOidNext)(OM_uint32 *,
967 (*gssDeleteSecContextNext)(OM_uint32 *,
972 (*gssDisplayNameNext)(OM_uint32 *,
978 (*gssImportNameNext)(OM_uint32 *,
984 (*gssStoreCredNext)(OM_uint32 *,
994 (*gssGetNameAttributeNext)(OM_uint32 *,
1003 #define NEXT_SYMBOL(local, global) do { \
1004 ((local) = dlsym(RTLD_NEXT, (global))); \
1005 if ((local) == NULL) { \
1006 *minor = GSSEAP_NO_MECHGLUE_SYMBOL; \
1007 major = GSS_S_UNAVAILABLE; \
1008 /* but continue */ \
1013 gssEapReauthInitialize(OM_uint32 *minor)
1015 OM_uint32 major = GSS_S_COMPLETE;
1017 NEXT_SYMBOL(gssInitSecContextNext, "gss_init_sec_context");
1018 NEXT_SYMBOL(gssAcceptSecContextNext, "gss_accept_sec_context");
1019 NEXT_SYMBOL(gssReleaseCredNext, "gss_release_cred");
1020 NEXT_SYMBOL(gssReleaseNameNext, "gss_release_name");
1021 NEXT_SYMBOL(gssInquireSecContextByOidNext, "gss_inquire_sec_context_by_oid");
1022 NEXT_SYMBOL(gssDeleteSecContextNext, "gss_delete_sec_context");
1023 NEXT_SYMBOL(gssDisplayNameNext, "gss_display_name");
1024 NEXT_SYMBOL(gssImportNameNext, "gss_import_name");
1025 NEXT_SYMBOL(gssStoreCredNext, "gss_store_cred");
1026 #ifndef HAVE_HEIMDAL_VERSION
1027 NEXT_SYMBOL(gssGetNameAttributeNext, "gss_get_name_attribute");
1034 gssInitSecContext(OM_uint32 *minor,
1036 gss_ctx_id_t *context_handle,
1037 gss_name_t target_name,
1039 OM_uint32 req_flags,
1041 gss_channel_bindings_t input_chan_bindings,
1042 gss_buffer_t input_token,
1043 gss_OID *actual_mech_type,
1044 gss_buffer_t output_token,
1045 OM_uint32 *ret_flags,
1046 OM_uint32 *time_rec)
1048 if (gssInitSecContextNext == NULL) {
1049 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1050 return GSS_S_UNAVAILABLE;
1053 return gssInitSecContextNext(minor, cred, context_handle,
1054 target_name, mech_type, req_flags,
1055 time_req, input_chan_bindings,
1056 input_token, actual_mech_type,
1057 output_token, ret_flags, time_rec);
1061 gssAcceptSecContext(OM_uint32 *minor,
1062 gss_ctx_id_t *context_handle,
1064 gss_buffer_t input_token,
1065 gss_channel_bindings_t input_chan_bindings,
1066 gss_name_t *src_name,
1068 gss_buffer_t output_token,
1069 OM_uint32 *ret_flags,
1070 OM_uint32 *time_rec,
1071 gss_cred_id_t *delegated_cred_handle)
1073 if (gssAcceptSecContextNext == NULL) {
1074 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1075 return GSS_S_UNAVAILABLE;
1078 return gssAcceptSecContextNext(minor, context_handle, cred,
1079 input_token, input_chan_bindings,
1080 src_name, mech_type, output_token,
1081 ret_flags, time_rec, delegated_cred_handle);
1085 gssReleaseCred(OM_uint32 *minor,
1086 gss_cred_id_t *cred_handle)
1088 if (gssReleaseCredNext == NULL) {
1089 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1090 return GSS_S_UNAVAILABLE;
1093 return gssReleaseCredNext(minor, cred_handle);
1097 gssReleaseName(OM_uint32 *minor,
1100 if (gssReleaseName == NULL) {
1101 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1102 return GSS_S_UNAVAILABLE;
1105 return gssReleaseNameNext(minor, name);
1109 gssDeleteSecContext(OM_uint32 *minor,
1110 gss_ctx_id_t *context_handle,
1111 gss_buffer_t output_token)
1113 if (gssDeleteSecContextNext == NULL) {
1114 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1115 return GSS_S_UNAVAILABLE;
1118 return gssDeleteSecContextNext(minor, context_handle, output_token);
1122 gssDisplayName(OM_uint32 *minor,
1124 gss_buffer_t buffer,
1127 if (gssDisplayNameNext == NULL) {
1128 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1129 return GSS_S_UNAVAILABLE;
1132 return gssDisplayNameNext(minor, name, buffer, name_type);
1136 gssImportName(OM_uint32 *minor,
1137 gss_buffer_t buffer,
1141 if (gssImportNameNext == NULL) {
1142 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1143 return GSS_S_UNAVAILABLE;
1146 return gssImportNameNext(minor, buffer, name_type, name);
1150 gssInquireSecContextByOid(OM_uint32 *minor,
1151 const gss_ctx_id_t context_handle,
1152 const gss_OID desired_object,
1153 gss_buffer_set_t *data_set)
1155 if (gssInquireSecContextByOidNext == NULL) {
1156 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1157 return GSS_S_UNAVAILABLE;
1160 return gssInquireSecContextByOidNext(minor, context_handle,
1161 desired_object, data_set);
1165 gssStoreCred(OM_uint32 *minor,
1166 const gss_cred_id_t input_cred_handle,
1167 gss_cred_usage_t input_usage,
1168 const gss_OID desired_mech,
1169 OM_uint32 overwrite_cred,
1170 OM_uint32 default_cred,
1171 gss_OID_set *elements_stored,
1172 gss_cred_usage_t *cred_usage_stored)
1174 if (gssStoreCredNext == NULL) {
1175 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1176 return GSS_S_UNAVAILABLE;
1179 return gssStoreCredNext(minor, input_cred_handle, input_usage,
1180 desired_mech, overwrite_cred, default_cred,
1181 elements_stored, cred_usage_stored);
1185 gssGetNameAttribute(OM_uint32 *minor,
1191 gss_buffer_t display_value,
1194 if (gssGetNameAttributeNext == NULL) {
1195 *minor = GSSEAP_NO_MECHGLUE_SYMBOL;
1196 return GSS_S_UNAVAILABLE;
1199 return gssGetNameAttributeNext(minor, name, attr, authenticated, complete,
1200 value, display_value, more);