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) {
569 /* Accept target name hint from acceptor or verify acceptor */
570 major = gssEapImportName(minor, inputToken,
574 if (GSS_ERROR(major))
577 if (ctx->acceptorName != GSS_C_NO_NAME) {
578 /* verify name hint matched asserted acceptor name */
579 major = gssEapCompareName(minor, nameHint,
580 ctx->acceptorName, &equal);
581 if (GSS_ERROR(major)) {
582 gssEapReleaseName(&tmpMinor, &nameHint);
586 gssEapReleaseName(&tmpMinor, &nameHint);
589 *minor = GSSEAP_BAD_CONTEXT_TOKEN;
590 return GSS_S_DEFECTIVE_TOKEN;
593 /* accept acceptor name hint */
594 ctx->acceptorName = nameHint;
595 nameHint = GSS_C_NO_NAME;
601 * Currently, other parts of the code assume that the acceptor name
602 * is available, hence this check.
604 if (ctx->acceptorName == GSS_C_NO_NAME) {
605 *minor = GSSEAP_NO_ACCEPTOR_NAME;
606 return GSS_S_FAILURE;
609 return GSS_S_CONTINUE_NEEDED;
613 eapGssSmInitIdentity(OM_uint32 *minor,
614 gss_cred_id_t cred GSSEAP_UNUSED,
616 gss_name_t target GSSEAP_UNUSED,
617 gss_OID mech GSSEAP_UNUSED,
618 OM_uint32 reqFlags GSSEAP_UNUSED,
619 OM_uint32 timeReq GSSEAP_UNUSED,
620 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
621 gss_buffer_t inputToken GSSEAP_UNUSED,
622 gss_buffer_t outputToken GSSEAP_UNUSED,
625 struct eap_config eapConfig;
627 #ifdef GSSEAP_ENABLE_REAUTH
628 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
631 /* server didn't support reauthentication, sent EAP request */
632 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
633 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
634 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
637 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
639 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
640 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
642 memset(&eapConfig, 0, sizeof(eapConfig));
644 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
645 &gssEapPolicyCallbacks,
648 if (ctx->initiatorCtx.eap == NULL) {
649 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
650 return GSS_S_FAILURE;
653 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
655 /* poke EAP state machine */
656 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
657 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
658 return GSS_S_FAILURE;
661 GSSEAP_SM_TRANSITION_NEXT(ctx);
665 return GSS_S_CONTINUE_NEEDED;
669 eapGssSmInitAuthenticate(OM_uint32 *minor,
670 gss_cred_id_t cred GSSEAP_UNUSED,
672 gss_name_t target GSSEAP_UNUSED,
673 gss_OID mech GSSEAP_UNUSED,
674 OM_uint32 reqFlags GSSEAP_UNUSED,
675 OM_uint32 timeReq GSSEAP_UNUSED,
676 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
677 gss_buffer_t inputToken GSSEAP_UNUSED,
678 gss_buffer_t outputToken,
683 struct wpabuf *resp = NULL;
687 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
689 major = peerConfigInit(minor, ctx);
690 if (GSS_ERROR(major))
693 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
694 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
696 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
698 wpabuf_set(&ctx->initiatorCtx.reqData,
699 inputToken->value, inputToken->length);
701 major = GSS_S_CONTINUE_NEEDED;
703 eap_peer_sm_step(ctx->initiatorCtx.eap);
704 if (ctx->flags & CTX_FLAG_EAP_RESP) {
705 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
707 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
708 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
709 major = initReady(minor, ctx, reqFlags);
710 if (GSS_ERROR(major))
713 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
714 major = GSS_S_CONTINUE_NEEDED;
715 GSSEAP_SM_TRANSITION_NEXT(ctx);
716 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
717 major = GSS_S_DEFECTIVE_CREDENTIAL;
718 *minor = GSSEAP_PEER_AUTH_FAILURE;
720 major = GSS_S_DEFECTIVE_TOKEN;
721 *minor = GSSEAP_PEER_BAD_MESSAGE;
727 gss_buffer_desc respBuf;
729 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
731 respBuf.length = wpabuf_len(resp);
732 respBuf.value = (void *)wpabuf_head(resp);
734 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
735 if (GSS_ERROR(tmpMajor)) {
740 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
743 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
744 peerConfigFree(&tmpMinor, ctx);
750 eapGssSmInitGssFlags(OM_uint32 *minor,
751 gss_cred_id_t cred GSSEAP_UNUSED,
753 gss_name_t target GSSEAP_UNUSED,
754 gss_OID mech GSSEAP_UNUSED,
755 OM_uint32 reqFlags GSSEAP_UNUSED,
756 OM_uint32 timeReq GSSEAP_UNUSED,
757 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
758 gss_buffer_t inputToken GSSEAP_UNUSED,
759 gss_buffer_t outputToken,
760 OM_uint32 *smFlags GSSEAP_UNUSED)
762 unsigned char wireFlags[4];
763 gss_buffer_desc flagsBuf;
765 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
767 flagsBuf.length = sizeof(wireFlags);
768 flagsBuf.value = wireFlags;
770 return duplicateBuffer(minor, &flagsBuf, outputToken);
774 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
775 gss_cred_id_t cred GSSEAP_UNUSED,
777 gss_name_t target GSSEAP_UNUSED,
778 gss_OID mech GSSEAP_UNUSED,
779 OM_uint32 reqFlags GSSEAP_UNUSED,
780 OM_uint32 timeReq GSSEAP_UNUSED,
781 gss_channel_bindings_t chanBindings,
782 gss_buffer_t inputToken GSSEAP_UNUSED,
783 gss_buffer_t outputToken,
787 krb5_error_code code;
788 krb5_context krbContext;
791 gss_buffer_desc cksumBuffer;
793 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
794 chanBindings->application_data.length == 0)
795 return GSS_S_CONTINUE_NEEDED;
797 GSSEAP_KRB_INIT(&krbContext);
799 KRB_DATA_INIT(&data);
801 gssBufferToKrbData(&chanBindings->application_data, &data);
803 code = krb5_c_make_checksum(krbContext, ctx->checksumType,
805 KEY_USAGE_GSSEAP_CHBIND_MIC,
809 return GSS_S_FAILURE;
812 cksumBuffer.length = KRB_CHECKSUM_LENGTH(&cksum);
813 cksumBuffer.value = KRB_CHECKSUM_DATA(&cksum);
815 major = duplicateBuffer(minor, &cksumBuffer, outputToken);
816 if (GSS_ERROR(major)) {
817 krb5_free_checksum_contents(krbContext, &cksum);
822 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
824 krb5_free_checksum_contents(krbContext, &cksum);
826 return GSS_S_CONTINUE_NEEDED;
830 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
831 gss_cred_id_t cred GSSEAP_UNUSED,
833 gss_name_t target GSSEAP_UNUSED,
834 gss_OID mech GSSEAP_UNUSED,
835 OM_uint32 reqFlags GSSEAP_UNUSED,
836 OM_uint32 timeReq GSSEAP_UNUSED,
837 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
838 gss_buffer_t inputToken GSSEAP_UNUSED,
839 gss_buffer_t outputToken,
844 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
845 if (GSS_ERROR(major))
848 GSSEAP_SM_TRANSITION_NEXT(ctx);
851 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
853 return GSS_S_CONTINUE_NEEDED;
856 #ifdef GSSEAP_ENABLE_REAUTH
858 eapGssSmInitReauthCreds(OM_uint32 *minor,
861 gss_name_t target GSSEAP_UNUSED,
862 gss_OID mech GSSEAP_UNUSED,
863 OM_uint32 reqFlags GSSEAP_UNUSED,
864 OM_uint32 timeReq GSSEAP_UNUSED,
865 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
866 gss_buffer_t inputToken,
867 gss_buffer_t outputToken GSSEAP_UNUSED,
868 OM_uint32 *smFlags GSSEAP_UNUSED)
872 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
873 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
874 if (GSS_ERROR(major))
879 return GSS_S_CONTINUE_NEEDED;
881 #endif /* GSSEAP_ENABLE_REAUTH */
884 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
885 gss_cred_id_t cred GSSEAP_UNUSED,
887 gss_name_t target GSSEAP_UNUSED,
888 gss_OID mech GSSEAP_UNUSED,
889 OM_uint32 reqFlags GSSEAP_UNUSED,
890 OM_uint32 timeReq GSSEAP_UNUSED,
891 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
892 gss_buffer_t inputToken,
893 gss_buffer_t outputToken GSSEAP_UNUSED,
894 OM_uint32 *smFlags GSSEAP_UNUSED)
898 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
899 if (GSS_ERROR(major))
902 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
906 return GSS_S_COMPLETE;
909 static struct gss_eap_sm eapGssInitiatorSm[] = {
911 ITOK_TYPE_CONTEXT_ERR,
913 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
918 ITOK_TYPE_ACCEPTOR_NAME_RESP,
919 ITOK_TYPE_ACCEPTOR_NAME_REQ,
920 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE |
921 GSSEAP_STATE_ACCEPTOR_EXTS,
923 eapGssSmInitAcceptorName
928 ITOK_TYPE_VENDOR_INFO,
929 GSSEAP_STATE_INITIAL,
931 eapGssSmInitVendorInfo
934 #ifdef GSSEAP_ENABLE_REAUTH
936 ITOK_TYPE_REAUTH_RESP,
937 ITOK_TYPE_REAUTH_REQ,
938 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
940 eapGssSmInitGssReauth
946 #ifdef GSSEAP_ENABLE_REAUTH
947 GSSEAP_STATE_REAUTHENTICATE |
949 GSSEAP_STATE_INITIAL,
950 SM_ITOK_FLAG_REQUIRED,
956 GSSEAP_STATE_AUTHENTICATE,
957 SM_ITOK_FLAG_REQUIRED,
958 eapGssSmInitAuthenticate
963 GSSEAP_STATE_INITIATOR_EXTS,
969 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
970 GSSEAP_STATE_INITIATOR_EXTS,
972 eapGssSmInitGssChannelBindings
976 ITOK_TYPE_INITIATOR_MIC,
977 GSSEAP_STATE_INITIATOR_EXTS,
978 SM_ITOK_FLAG_REQUIRED,
979 eapGssSmInitInitiatorMIC
981 #ifdef GSSEAP_ENABLE_REAUTH
983 ITOK_TYPE_REAUTH_CREDS,
985 GSSEAP_STATE_ACCEPTOR_EXTS,
987 eapGssSmInitReauthCreds
990 /* other extensions go here */
992 ITOK_TYPE_ACCEPTOR_MIC,
994 GSSEAP_STATE_ACCEPTOR_EXTS,
995 SM_ITOK_FLAG_REQUIRED,
996 eapGssSmInitAcceptorMIC
1001 gssEapInitSecContext(OM_uint32 *minor,
1004 gss_name_t target_name,
1006 OM_uint32 req_flags,
1008 gss_channel_bindings_t input_chan_bindings,
1009 gss_buffer_t input_token,
1010 gss_OID *actual_mech_type,
1011 gss_buffer_t output_token,
1012 OM_uint32 *ret_flags,
1013 OM_uint32 *time_rec)
1015 OM_uint32 major, tmpMinor;
1016 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1019 * XXX is acquiring the credential lock here necessary? The password is
1020 * mutable but the contract could specify that this is not updated whilst
1021 * a context is being initialized.
1023 if (cred != GSS_C_NO_CREDENTIAL)
1024 GSSEAP_MUTEX_LOCK(&cred->mutex);
1026 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1027 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1028 if (GSS_ERROR(major))
1031 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1034 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1036 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1037 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1039 if (initialContextToken) {
1040 major = initBegin(minor, ctx, target_name, mech_type,
1041 req_flags, time_req, input_chan_bindings);
1042 if (GSS_ERROR(major))
1046 major = gssEapSmStep(minor,
1053 input_chan_bindings,
1057 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1058 if (GSS_ERROR(major))
1061 if (actual_mech_type != NULL) {
1064 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1065 if (GSS_ERROR(tmpMajor)) {
1071 if (ret_flags != NULL)
1072 *ret_flags = ctx->gssFlags;
1073 if (time_rec != NULL)
1074 gssEapContextTime(&tmpMinor, ctx, time_rec);
1076 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1079 if (cred != GSS_C_NO_CREDENTIAL)
1080 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1081 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1082 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1087 OM_uint32 GSSAPI_CALLCONV
1088 gss_init_sec_context(OM_uint32 *minor,
1090 gss_ctx_id_t *context_handle,
1091 gss_name_t target_name,
1093 OM_uint32 req_flags,
1095 gss_channel_bindings_t input_chan_bindings,
1096 gss_buffer_t input_token,
1097 gss_OID *actual_mech_type,
1098 gss_buffer_t output_token,
1099 OM_uint32 *ret_flags,
1100 OM_uint32 *time_rec)
1102 OM_uint32 major, tmpMinor;
1103 gss_ctx_id_t ctx = *context_handle;
1107 output_token->length = 0;
1108 output_token->value = NULL;
1110 if (ctx == GSS_C_NO_CONTEXT) {
1111 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1112 *minor = GSSEAP_WRONG_SIZE;
1113 return GSS_S_DEFECTIVE_TOKEN;
1116 major = gssEapAllocContext(minor, &ctx);
1117 if (GSS_ERROR(major))
1120 ctx->flags |= CTX_FLAG_INITIATOR;
1122 *context_handle = ctx;
1125 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1127 major = gssEapInitSecContext(minor,
1134 input_chan_bindings,
1141 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1143 if (GSS_ERROR(major))
1144 gssEapReleaseContext(&tmpMinor, context_handle);