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 * Establish a security context on the initiator (client). These functions
38 #include "gssapiP_eap.h"
41 policyVariableToFlag(enum eapol_bool_var variable)
46 case EAPOL_eapSuccess:
47 flag = CTX_FLAG_EAP_SUCCESS;
49 case EAPOL_eapRestart:
50 flag = CTX_FLAG_EAP_RESTART;
53 flag = CTX_FLAG_EAP_FAIL;
56 flag = CTX_FLAG_EAP_RESP;
59 flag = CTX_FLAG_EAP_NO_RESP;
62 flag = CTX_FLAG_EAP_REQ;
64 case EAPOL_portEnabled:
65 flag = CTX_FLAG_EAP_PORT_ENABLED;
68 flag = CTX_FLAG_EAP_ALT_ACCEPT;
71 flag = CTX_FLAG_EAP_ALT_REJECT;
78 static struct eap_peer_config *
79 peerGetConfig(void *ctx)
81 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
83 return &gssCtx->initiatorCtx.eapPeerConfig;
87 peerGetBool(void *data, enum eapol_bool_var variable)
89 gss_ctx_id_t ctx = data;
92 if (ctx == GSS_C_NO_CONTEXT)
95 flag = policyVariableToFlag(variable);
97 return ((ctx->flags & flag) != 0);
101 peerSetBool(void *data, enum eapol_bool_var variable,
104 gss_ctx_id_t ctx = data;
107 if (ctx == GSS_C_NO_CONTEXT)
110 flag = policyVariableToFlag(variable);
115 ctx->flags &= ~(flag);
119 peerGetInt(void *data, enum eapol_int_var variable)
121 gss_ctx_id_t ctx = data;
123 if (ctx == GSS_C_NO_CONTEXT)
126 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
129 case EAPOL_idleWhile:
130 return ctx->initiatorCtx.idleWhile;
138 peerSetInt(void *data, enum eapol_int_var variable,
141 gss_ctx_id_t ctx = data;
143 if (ctx == GSS_C_NO_CONTEXT)
146 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
149 case EAPOL_idleWhile:
150 ctx->initiatorCtx.idleWhile = value;
155 static struct wpabuf *
156 peerGetEapReqData(void *ctx)
158 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
160 return &gssCtx->initiatorCtx.reqData;
164 peerSetConfigBlob(void *ctx GSSEAP_UNUSED,
165 struct wpa_config_blob *blob GSSEAP_UNUSED)
169 static const struct wpa_config_blob *
170 peerGetConfigBlob(void *ctx GSSEAP_UNUSED,
171 const char *name GSSEAP_UNUSED)
177 peerNotifyPending(void *ctx GSSEAP_UNUSED)
181 static struct eapol_callbacks gssEapPolicyCallbacks = {
194 extern int wpa_debug_level;
198 peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
201 krb5_context krbContext;
202 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
203 gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
204 gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
205 gss_cred_id_t cred = ctx->cred;
207 eapPeerConfig->identity = NULL;
208 eapPeerConfig->identity_len = 0;
209 eapPeerConfig->anonymous_identity = NULL;
210 eapPeerConfig->anonymous_identity_len = 0;
211 eapPeerConfig->password = NULL;
212 eapPeerConfig->password_len = 0;
214 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
216 GSSEAP_KRB_INIT(&krbContext);
218 eapPeerConfig->fragment_size = 1024;
223 GSSEAP_ASSERT(cred->name != GSS_C_NO_NAME);
225 if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
226 *minor = GSSEAP_BAD_INITIATOR_NAME;
227 return GSS_S_BAD_NAME;
231 major = gssEapDisplayName(minor, cred->name, &identity, NULL);
232 if (GSS_ERROR(major))
235 eapPeerConfig->identity = (unsigned char *)identity.value;
236 eapPeerConfig->identity_len = identity.length;
238 krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
240 /* anonymous_identity */
241 eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
242 if (eapPeerConfig->anonymous_identity == NULL) {
244 return GSS_S_FAILURE;
247 eapPeerConfig->anonymous_identity[0] = '@';
248 memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
249 eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
250 eapPeerConfig->anonymous_identity_len = 1 + realm.length;
253 eapPeerConfig->password = (unsigned char *)cred->password.value;
254 eapPeerConfig->password_len = cred->password.length;
257 eapPeerConfig->ca_cert = (unsigned char *)cred->caCertificate.value;
258 eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
259 eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
262 return GSS_S_COMPLETE;
266 peerConfigFree(OM_uint32 *minor,
269 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
271 if (eapPeerConfig->identity != NULL) {
272 GSSEAP_FREE(eapPeerConfig->identity);
273 eapPeerConfig->identity = NULL;
274 eapPeerConfig->identity_len = 0;
277 if (eapPeerConfig->anonymous_identity != NULL) {
278 GSSEAP_FREE(eapPeerConfig->anonymous_identity);
279 eapPeerConfig->anonymous_identity = NULL;
280 eapPeerConfig->anonymous_identity_len = 0;
284 return GSS_S_COMPLETE;
288 * Mark an initiator context as ready for cryptographic operations
291 initReady(OM_uint32 *minor, gss_ctx_id_t ctx, OM_uint32 reqFlags)
294 const unsigned char *key;
298 /* XXX actually check for mutual auth */
299 if (reqFlags & GSS_C_MUTUAL_FLAG)
300 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
303 /* Cache encryption type derived from selected mechanism OID */
304 major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
305 if (GSS_ERROR(major))
308 if (!eap_key_available(ctx->initiatorCtx.eap)) {
309 *minor = GSSEAP_KEY_UNAVAILABLE;
310 return GSS_S_UNAVAILABLE;
313 key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
315 if (keyLength < EAP_EMSK_LEN) {
316 *minor = GSSEAP_KEY_TOO_SHORT;
317 return GSS_S_UNAVAILABLE;
320 major = gssEapDeriveRfc3961Key(minor,
321 &key[EAP_EMSK_LEN / 2],
325 if (GSS_ERROR(major))
328 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
330 if (GSS_ERROR(major))
333 major = sequenceInit(minor,
336 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
337 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
339 if (GSS_ERROR(major))
343 return GSS_S_COMPLETE;
347 initBegin(OM_uint32 *minor,
351 OM_uint32 reqFlags GSSEAP_UNUSED,
353 gss_channel_bindings_t chanBindings GSSEAP_UNUSED)
356 gss_cred_id_t cred = ctx->cred;
358 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
360 if (cred->expiryTime)
361 ctx->expiryTime = cred->expiryTime;
362 else if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
365 ctx->expiryTime = time(NULL) + timeReq;
368 * The credential mutex protects its name, however we need to
369 * explicitly lock the acceptor name (unlikely as it may be
370 * that it has attributes set on it).
372 major = gssEapDuplicateName(minor, cred->name, &ctx->initiatorName);
373 if (GSS_ERROR(major))
376 if (target != GSS_C_NO_NAME) {
377 GSSEAP_MUTEX_LOCK(&target->mutex);
379 major = gssEapDuplicateName(minor, target, &ctx->acceptorName);
380 if (GSS_ERROR(major)) {
381 GSSEAP_MUTEX_UNLOCK(&target->mutex);
385 GSSEAP_MUTEX_UNLOCK(&target->mutex);
388 major = gssEapCanonicalizeOid(minor,
390 OID_FLAG_NULL_VALID | OID_FLAG_MAP_NULL_TO_DEFAULT_MECH,
391 &ctx->mechanismUsed);
392 if (GSS_ERROR(major))
395 /* If credentials were provided, check they're usable with this mech */
396 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
397 *minor = GSSEAP_CRED_MECH_MISMATCH;
398 return GSS_S_BAD_MECH;
402 return GSS_S_COMPLETE;
406 eapGssSmInitError(OM_uint32 *minor,
407 gss_cred_id_t cred GSSEAP_UNUSED,
408 gss_ctx_id_t ctx GSSEAP_UNUSED,
409 gss_name_t target GSSEAP_UNUSED,
410 gss_OID mech GSSEAP_UNUSED,
411 OM_uint32 reqFlags GSSEAP_UNUSED,
412 OM_uint32 timeReq GSSEAP_UNUSED,
413 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
414 gss_buffer_t inputToken,
415 gss_buffer_t outputToken GSSEAP_UNUSED,
416 OM_uint32 *smFlags GSSEAP_UNUSED)
421 if (inputToken->length < 8) {
422 *minor = GSSEAP_TOK_TRUNC;
423 return GSS_S_DEFECTIVE_TOKEN;
426 p = (unsigned char *)inputToken->value;
428 major = load_uint32_be(&p[0]);
429 *minor = ERROR_TABLE_BASE_eapg + load_uint32_be(&p[4]);
431 if (!GSS_ERROR(major) || !IS_WIRE_ERROR(*minor)) {
432 major = GSS_S_FAILURE;
433 *minor = GSSEAP_BAD_ERROR_TOKEN;
436 GSSEAP_ASSERT(GSS_ERROR(major));
441 #ifdef GSSEAP_ENABLE_REAUTH
443 eapGssSmInitGssReauth(OM_uint32 *minor,
447 gss_OID mech GSSEAP_UNUSED,
450 gss_channel_bindings_t chanBindings,
451 gss_buffer_t inputToken,
452 gss_buffer_t outputToken,
453 OM_uint32 *smFlags GSSEAP_UNUSED)
455 OM_uint32 major, tmpMinor;
456 gss_name_t mechTarget = GSS_C_NO_NAME;
457 gss_OID actualMech = GSS_C_NO_OID;
458 OM_uint32 gssFlags, timeRec;
461 * Here we use the passed in credential handle because the resolved
462 * context credential does not currently have the reauth creds.
464 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
465 if (!gssEapCanReauthP(cred, target, timeReq))
466 return GSS_S_CONTINUE_NEEDED;
468 ctx->flags |= CTX_FLAG_KRB_REAUTH;
469 } else if ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
470 major = GSS_S_DEFECTIVE_TOKEN;
471 *minor = GSSEAP_WRONG_ITOK;
475 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
477 major = gssEapMechToGlueName(minor, target, &mechTarget);
478 if (GSS_ERROR(major))
481 major = gssInitSecContext(minor,
485 (gss_OID)gss_mech_krb5,
486 reqFlags | GSS_C_MUTUAL_FLAG,
494 if (GSS_ERROR(major))
497 ctx->gssFlags = gssFlags;
499 if (major == GSS_S_COMPLETE) {
500 GSSEAP_ASSERT(GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE);
502 major = gssEapReauthComplete(minor, ctx, cred, actualMech, timeRec);
503 if (GSS_ERROR(major))
505 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
507 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_REAUTHENTICATE);
511 gssReleaseName(&tmpMinor, &mechTarget);
515 #endif /* GSSEAP_ENABLE_REAUTH */
519 eapGssSmInitVendorInfo(OM_uint32 *minor,
520 gss_cred_id_t cred GSSEAP_UNUSED,
521 gss_ctx_id_t ctx GSSEAP_UNUSED,
522 gss_name_t target GSSEAP_UNUSED,
523 gss_OID mech GSSEAP_UNUSED,
524 OM_uint32 reqFlags GSSEAP_UNUSED,
525 OM_uint32 timeReq GSSEAP_UNUSED,
526 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
527 gss_buffer_t inputToken GSSEAP_UNUSED,
528 gss_buffer_t outputToken,
529 OM_uint32 *smFlags GSSEAP_UNUSED)
533 major = makeStringBuffer(minor, "JANET(UK)", outputToken);
534 if (GSS_ERROR(major))
537 return GSS_S_CONTINUE_NEEDED;
542 eapGssSmInitAcceptorName(OM_uint32 *minor,
543 gss_cred_id_t cred GSSEAP_UNUSED,
545 gss_name_t target GSSEAP_UNUSED,
546 gss_OID mech GSSEAP_UNUSED,
547 OM_uint32 reqFlags GSSEAP_UNUSED,
548 OM_uint32 timeReq GSSEAP_UNUSED,
549 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
550 gss_buffer_t inputToken GSSEAP_UNUSED,
551 gss_buffer_t outputToken,
552 OM_uint32 *smFlags GSSEAP_UNUSED)
556 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL &&
557 ctx->acceptorName != GSS_C_NO_NAME) {
559 /* Send desired target name to acceptor */
560 major = gssEapDisplayName(minor, ctx->acceptorName,
562 if (GSS_ERROR(major))
564 } else if (inputToken != GSS_C_NO_BUFFER) {
565 /* Accept target name hint from acceptor or verify acceptor*/
566 gss_name_t importedName;
567 major = gssEapImportName(minor, inputToken,
571 if (GSS_ERROR(major))
573 if (ctx->acceptorName) {
576 OM_uint32 ignoredMinor = 0;
577 major = gss_compare_name(minor, importedName,
578 ctx->acceptorName, &equal);
579 gss_release_name(&ignoredMinor, &importedName);
580 if (GSS_ERROR(major))
583 *minor = GSSEAP_BAD_CONTEXT_TOKEN;
584 return GSS_S_DEFECTIVE_TOKEN;
587 /* accept acceptor name hint */
588 ctx->acceptorName = importedName;
595 * Currently, other parts of the code assume that the acceptor name
596 * is available, hence this check.
598 if (ctx->acceptorName == GSS_C_NO_NAME) {
599 *minor = GSSEAP_NO_ACCEPTOR_NAME;
600 return GSS_S_FAILURE;
603 return GSS_S_CONTINUE_NEEDED;
607 eapGssSmInitIdentity(OM_uint32 *minor,
608 gss_cred_id_t cred GSSEAP_UNUSED,
610 gss_name_t target GSSEAP_UNUSED,
611 gss_OID mech GSSEAP_UNUSED,
612 OM_uint32 reqFlags GSSEAP_UNUSED,
613 OM_uint32 timeReq GSSEAP_UNUSED,
614 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
615 gss_buffer_t inputToken GSSEAP_UNUSED,
616 gss_buffer_t outputToken GSSEAP_UNUSED,
619 struct eap_config eapConfig;
621 #ifdef GSSEAP_ENABLE_REAUTH
622 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
625 /* server didn't support reauthentication, sent EAP request */
626 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
627 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
628 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
631 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
633 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
634 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
636 memset(&eapConfig, 0, sizeof(eapConfig));
638 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
639 &gssEapPolicyCallbacks,
642 if (ctx->initiatorCtx.eap == NULL) {
643 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
644 return GSS_S_FAILURE;
647 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
649 /* poke EAP state machine */
650 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
651 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
652 return GSS_S_FAILURE;
655 GSSEAP_SM_TRANSITION_NEXT(ctx);
659 return GSS_S_CONTINUE_NEEDED;
663 eapGssSmInitAuthenticate(OM_uint32 *minor,
664 gss_cred_id_t cred GSSEAP_UNUSED,
666 gss_name_t target GSSEAP_UNUSED,
667 gss_OID mech GSSEAP_UNUSED,
668 OM_uint32 reqFlags GSSEAP_UNUSED,
669 OM_uint32 timeReq GSSEAP_UNUSED,
670 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
671 gss_buffer_t inputToken GSSEAP_UNUSED,
672 gss_buffer_t outputToken,
677 struct wpabuf *resp = NULL;
681 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
683 major = peerConfigInit(minor, ctx);
684 if (GSS_ERROR(major))
687 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
688 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
690 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
692 wpabuf_set(&ctx->initiatorCtx.reqData,
693 inputToken->value, inputToken->length);
695 major = GSS_S_CONTINUE_NEEDED;
697 eap_peer_sm_step(ctx->initiatorCtx.eap);
698 if (ctx->flags & CTX_FLAG_EAP_RESP) {
699 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
701 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
702 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
703 major = initReady(minor, ctx, reqFlags);
704 if (GSS_ERROR(major))
707 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
708 major = GSS_S_CONTINUE_NEEDED;
709 GSSEAP_SM_TRANSITION_NEXT(ctx);
710 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
711 major = GSS_S_DEFECTIVE_CREDENTIAL;
712 *minor = GSSEAP_PEER_AUTH_FAILURE;
714 major = GSS_S_DEFECTIVE_TOKEN;
715 *minor = GSSEAP_PEER_BAD_MESSAGE;
721 gss_buffer_desc respBuf;
723 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
725 respBuf.length = wpabuf_len(resp);
726 respBuf.value = (void *)wpabuf_head(resp);
728 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
729 if (GSS_ERROR(tmpMajor)) {
734 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
737 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
738 peerConfigFree(&tmpMinor, ctx);
744 eapGssSmInitGssFlags(OM_uint32 *minor,
745 gss_cred_id_t cred GSSEAP_UNUSED,
747 gss_name_t target GSSEAP_UNUSED,
748 gss_OID mech GSSEAP_UNUSED,
749 OM_uint32 reqFlags GSSEAP_UNUSED,
750 OM_uint32 timeReq GSSEAP_UNUSED,
751 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
752 gss_buffer_t inputToken GSSEAP_UNUSED,
753 gss_buffer_t outputToken,
754 OM_uint32 *smFlags GSSEAP_UNUSED)
756 unsigned char wireFlags[4];
757 gss_buffer_desc flagsBuf;
759 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
761 flagsBuf.length = sizeof(wireFlags);
762 flagsBuf.value = wireFlags;
764 return duplicateBuffer(minor, &flagsBuf, outputToken);
768 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
769 gss_cred_id_t cred GSSEAP_UNUSED,
771 gss_name_t target GSSEAP_UNUSED,
772 gss_OID mech GSSEAP_UNUSED,
773 OM_uint32 reqFlags GSSEAP_UNUSED,
774 OM_uint32 timeReq GSSEAP_UNUSED,
775 gss_channel_bindings_t chanBindings,
776 gss_buffer_t inputToken GSSEAP_UNUSED,
777 gss_buffer_t outputToken,
781 krb5_error_code code;
782 krb5_context krbContext;
785 gss_buffer_desc cksumBuffer;
787 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
788 chanBindings->application_data.length == 0)
789 return GSS_S_CONTINUE_NEEDED;
791 GSSEAP_KRB_INIT(&krbContext);
793 KRB_DATA_INIT(&data);
795 gssBufferToKrbData(&chanBindings->application_data, &data);
797 code = krb5_c_make_checksum(krbContext, ctx->checksumType,
799 KEY_USAGE_GSSEAP_CHBIND_MIC,
803 return GSS_S_FAILURE;
806 cksumBuffer.length = KRB_CHECKSUM_LENGTH(&cksum);
807 cksumBuffer.value = KRB_CHECKSUM_DATA(&cksum);
809 major = duplicateBuffer(minor, &cksumBuffer, outputToken);
810 if (GSS_ERROR(major)) {
811 krb5_free_checksum_contents(krbContext, &cksum);
816 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
818 krb5_free_checksum_contents(krbContext, &cksum);
820 return GSS_S_CONTINUE_NEEDED;
824 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
825 gss_cred_id_t cred GSSEAP_UNUSED,
827 gss_name_t target GSSEAP_UNUSED,
828 gss_OID mech GSSEAP_UNUSED,
829 OM_uint32 reqFlags GSSEAP_UNUSED,
830 OM_uint32 timeReq GSSEAP_UNUSED,
831 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
832 gss_buffer_t inputToken GSSEAP_UNUSED,
833 gss_buffer_t outputToken,
838 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
839 if (GSS_ERROR(major))
842 GSSEAP_SM_TRANSITION_NEXT(ctx);
845 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
847 return GSS_S_CONTINUE_NEEDED;
850 #ifdef GSSEAP_ENABLE_REAUTH
852 eapGssSmInitReauthCreds(OM_uint32 *minor,
855 gss_name_t target GSSEAP_UNUSED,
856 gss_OID mech GSSEAP_UNUSED,
857 OM_uint32 reqFlags GSSEAP_UNUSED,
858 OM_uint32 timeReq GSSEAP_UNUSED,
859 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
860 gss_buffer_t inputToken,
861 gss_buffer_t outputToken GSSEAP_UNUSED,
862 OM_uint32 *smFlags GSSEAP_UNUSED)
866 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
867 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
868 if (GSS_ERROR(major))
873 return GSS_S_CONTINUE_NEEDED;
875 #endif /* GSSEAP_ENABLE_REAUTH */
878 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
879 gss_cred_id_t cred GSSEAP_UNUSED,
881 gss_name_t target GSSEAP_UNUSED,
882 gss_OID mech GSSEAP_UNUSED,
883 OM_uint32 reqFlags GSSEAP_UNUSED,
884 OM_uint32 timeReq GSSEAP_UNUSED,
885 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
886 gss_buffer_t inputToken,
887 gss_buffer_t outputToken GSSEAP_UNUSED,
888 OM_uint32 *smFlags GSSEAP_UNUSED)
892 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
893 if (GSS_ERROR(major))
896 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
900 return GSS_S_COMPLETE;
903 static struct gss_eap_sm eapGssInitiatorSm[] = {
905 ITOK_TYPE_CONTEXT_ERR,
907 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
912 ITOK_TYPE_ACCEPTOR_NAME_RESP,
913 ITOK_TYPE_ACCEPTOR_NAME_REQ,
914 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE
915 | GSSEAP_STATE_ACCEPTOR_EXTS ,
917 eapGssSmInitAcceptorName
922 ITOK_TYPE_VENDOR_INFO,
923 GSSEAP_STATE_INITIAL,
925 eapGssSmInitVendorInfo
928 #ifdef GSSEAP_ENABLE_REAUTH
930 ITOK_TYPE_REAUTH_RESP,
931 ITOK_TYPE_REAUTH_REQ,
932 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
934 eapGssSmInitGssReauth
940 #ifdef GSSEAP_ENABLE_REAUTH
941 GSSEAP_STATE_REAUTHENTICATE |
943 GSSEAP_STATE_INITIAL,
944 SM_ITOK_FLAG_REQUIRED,
950 GSSEAP_STATE_AUTHENTICATE,
951 SM_ITOK_FLAG_REQUIRED,
952 eapGssSmInitAuthenticate
957 GSSEAP_STATE_INITIATOR_EXTS,
963 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
964 GSSEAP_STATE_INITIATOR_EXTS,
966 eapGssSmInitGssChannelBindings
970 ITOK_TYPE_INITIATOR_MIC,
971 GSSEAP_STATE_INITIATOR_EXTS,
972 SM_ITOK_FLAG_REQUIRED,
973 eapGssSmInitInitiatorMIC
975 #ifdef GSSEAP_ENABLE_REAUTH
977 ITOK_TYPE_REAUTH_CREDS,
979 GSSEAP_STATE_ACCEPTOR_EXTS,
981 eapGssSmInitReauthCreds
984 /* other extensions go here */
986 ITOK_TYPE_ACCEPTOR_MIC,
988 GSSEAP_STATE_ACCEPTOR_EXTS,
989 SM_ITOK_FLAG_REQUIRED,
990 eapGssSmInitAcceptorMIC
995 gssEapInitSecContext(OM_uint32 *minor,
998 gss_name_t target_name,
1000 OM_uint32 req_flags,
1002 gss_channel_bindings_t input_chan_bindings,
1003 gss_buffer_t input_token,
1004 gss_OID *actual_mech_type,
1005 gss_buffer_t output_token,
1006 OM_uint32 *ret_flags,
1007 OM_uint32 *time_rec)
1009 OM_uint32 major, tmpMinor;
1010 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1013 * XXX is acquiring the credential lock here necessary? The password is
1014 * mutable but the contract could specify that this is not updated whilst
1015 * a context is being initialized.
1017 if (cred != GSS_C_NO_CREDENTIAL)
1018 GSSEAP_MUTEX_LOCK(&cred->mutex);
1020 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1021 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1022 if (GSS_ERROR(major))
1025 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1028 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1030 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1031 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1033 if (initialContextToken) {
1034 major = initBegin(minor, ctx, target_name, mech_type,
1035 req_flags, time_req, input_chan_bindings);
1036 if (GSS_ERROR(major))
1040 major = gssEapSmStep(minor,
1047 input_chan_bindings,
1051 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1052 if (GSS_ERROR(major))
1055 if (actual_mech_type != NULL) {
1058 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1059 if (GSS_ERROR(tmpMajor)) {
1065 if (ret_flags != NULL)
1066 *ret_flags = ctx->gssFlags;
1067 if (time_rec != NULL)
1068 gssEapContextTime(&tmpMinor, ctx, time_rec);
1070 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1073 if (cred != GSS_C_NO_CREDENTIAL)
1074 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1075 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1076 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1081 OM_uint32 GSSAPI_CALLCONV
1082 gss_init_sec_context(OM_uint32 *minor,
1084 gss_ctx_id_t *context_handle,
1085 gss_name_t target_name,
1087 OM_uint32 req_flags,
1089 gss_channel_bindings_t input_chan_bindings,
1090 gss_buffer_t input_token,
1091 gss_OID *actual_mech_type,
1092 gss_buffer_t output_token,
1093 OM_uint32 *ret_flags,
1094 OM_uint32 *time_rec)
1096 OM_uint32 major, tmpMinor;
1097 gss_ctx_id_t ctx = *context_handle;
1101 output_token->length = 0;
1102 output_token->value = NULL;
1104 if (ctx == GSS_C_NO_CONTEXT) {
1105 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1106 *minor = GSSEAP_WRONG_SIZE;
1107 return GSS_S_DEFECTIVE_TOKEN;
1110 major = gssEapAllocContext(minor, &ctx);
1111 if (GSS_ERROR(major))
1114 ctx->flags |= CTX_FLAG_INITIATOR;
1116 *context_handle = ctx;
1119 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1121 major = gssEapInitSecContext(minor,
1128 input_chan_bindings,
1135 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1137 if (GSS_ERROR(major))
1138 gssEapReleaseContext(&tmpMinor, context_handle);