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"
39 #include "radius/radius.h"
40 #include "util_radius.h"
41 #include "utils/radius_utils.h"
44 policyVariableToFlag(enum eapol_bool_var variable)
49 case EAPOL_eapSuccess:
50 flag = CTX_FLAG_EAP_SUCCESS;
52 case EAPOL_eapRestart:
53 flag = CTX_FLAG_EAP_RESTART;
56 flag = CTX_FLAG_EAP_FAIL;
59 flag = CTX_FLAG_EAP_RESP;
62 flag = CTX_FLAG_EAP_NO_RESP;
65 flag = CTX_FLAG_EAP_REQ;
67 case EAPOL_portEnabled:
68 flag = CTX_FLAG_EAP_PORT_ENABLED;
71 flag = CTX_FLAG_EAP_ALT_ACCEPT;
74 flag = CTX_FLAG_EAP_ALT_REJECT;
81 static struct eap_peer_config *
82 peerGetConfig(void *ctx)
84 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
86 return &gssCtx->initiatorCtx.eapPeerConfig;
90 peerGetBool(void *data, enum eapol_bool_var variable)
92 gss_ctx_id_t ctx = data;
95 if (ctx == GSS_C_NO_CONTEXT)
98 flag = policyVariableToFlag(variable);
100 return ((ctx->flags & flag) != 0);
104 peerSetBool(void *data, enum eapol_bool_var variable,
107 gss_ctx_id_t ctx = data;
110 if (ctx == GSS_C_NO_CONTEXT)
113 flag = policyVariableToFlag(variable);
118 ctx->flags &= ~(flag);
122 peerGetInt(void *data, enum eapol_int_var variable)
124 gss_ctx_id_t ctx = data;
126 if (ctx == GSS_C_NO_CONTEXT)
129 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
132 case EAPOL_idleWhile:
133 return ctx->initiatorCtx.idleWhile;
141 peerSetInt(void *data, enum eapol_int_var variable,
144 gss_ctx_id_t ctx = data;
146 if (ctx == GSS_C_NO_CONTEXT)
149 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
152 case EAPOL_idleWhile:
153 ctx->initiatorCtx.idleWhile = value;
158 static struct wpabuf *
159 peerGetEapReqData(void *ctx)
161 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
163 return &gssCtx->initiatorCtx.reqData;
167 peerSetConfigBlob(void *ctx GSSEAP_UNUSED,
168 struct wpa_config_blob *blob GSSEAP_UNUSED)
172 static const struct wpa_config_blob *
173 peerGetConfigBlob(void *ctx GSSEAP_UNUSED,
174 const char *name GSSEAP_UNUSED)
180 peerNotifyPending(void *ctx GSSEAP_UNUSED)
184 static struct eapol_callbacks gssEapPolicyCallbacks = {
197 extern int wpa_debug_level;
200 #define CHBIND_SERVICE_NAME_FLAG 0x01
201 #define CHBIND_HOST_NAME_FLAG 0x02
202 #define CHBIND_SERVICE_SPECIFIC_FLAG 0x04
203 #define CHBIND_REALM_NAME_FLAG 0x08
205 extern void TestFunc();
208 peerInitEapChannelBinding(OM_uint32 *minor, gss_ctx_id_t ctx)
210 struct wpabuf *buf = NULL;
211 unsigned int chbindReqFlags = 0;
212 krb5_principal princ = NULL;
213 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
214 OM_uint32 major = GSS_S_COMPLETE;
215 krb5_context krbContext = NULL;
217 /* XXX is this check redundant? */
218 if (ctx->acceptorName == GSS_C_NO_NAME) {
219 major = GSS_S_BAD_NAME;
220 *minor = GSSEAP_NO_ACCEPTOR_NAME;
224 princ = ctx->acceptorName->krbPrincipal;
226 krbPrincComponentToGssBuffer(princ, 0, &nameBuf);
227 if (nameBuf.length > 0) {
228 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_SERVICE_NAME,
230 if (GSS_ERROR(major))
233 chbindReqFlags |= CHBIND_SERVICE_NAME_FLAG;
236 krbPrincComponentToGssBuffer(princ, 1, &nameBuf);
237 if (nameBuf.length > 0) {
238 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_HOST_NAME,
240 if (GSS_ERROR(major))
243 chbindReqFlags |= CHBIND_HOST_NAME_FLAG;
246 GSSEAP_KRB_INIT(&krbContext);
248 *minor = krbPrincUnparseServiceSpecifics(krbContext, princ, &nameBuf);
252 if (nameBuf.length > 0) {
253 major = gssEapRadiusAddAttr(minor, &buf,
254 PW_GSS_ACCEPTOR_SERVICE_SPECIFICS,
256 if (GSS_ERROR(major))
259 chbindReqFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
262 krbFreeUnparsedName(krbContext, &nameBuf);
263 krbPrincRealmToGssBuffer(princ, &nameBuf);
265 if (nameBuf.length > 0) {
266 major = gssEapRadiusAddAttr(minor, &buf,
267 PW_GSS_ACCEPTOR_REALM_NAME,
269 chbindReqFlags |= CHBIND_REALM_NAME_FLAG;
272 if (chbindReqFlags == 0) {
273 major = GSS_S_BAD_NAME;
274 *minor = GSSEAP_BAD_ACCEPTOR_NAME;
278 ctx->initiatorCtx.chbindData = buf;
279 ctx->initiatorCtx.chbindReqFlags = chbindReqFlags;
283 major = GSS_S_COMPLETE;
287 krbFreeUnparsedName(krbContext, &nameBuf);
294 peerProcessChbindResponse(void *context, int code, int nsid,
295 u8 *data, size_t len)
298 gss_ctx_id_t ctx = (gss_ctx_id_t )context;
302 u32 chbindRetFlags = 0;
305 if (nsid != CHBIND_NSID_RADIUS)
308 msg = radius_parser_start(data, len);
312 while (radius_parser_parse_tlv(msg, &type, &vendor_id, &vsadata,
313 &vsadata_len) == 0) {
315 case PW_GSS_ACCEPTOR_SERVICE_NAME:
316 chbindRetFlags |= CHBIND_SERVICE_NAME_FLAG;
318 case PW_GSS_ACCEPTOR_HOST_NAME:
319 chbindRetFlags |= CHBIND_HOST_NAME_FLAG;
321 case PW_GSS_ACCEPTOR_SERVICE_SPECIFICS:
322 chbindRetFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
324 case PW_GSS_ACCEPTOR_REALM_NAME:
325 chbindRetFlags |= CHBIND_REALM_NAME_FLAG;
330 radius_parser_finish(msg);
332 if (code == CHBIND_CODE_SUCCESS &&
333 ((chbindRetFlags & ctx->initiatorCtx.chbindReqFlags) == ctx->initiatorCtx.chbindReqFlags)) {
334 ctx->flags |= CTX_FLAG_EAP_CHBIND_ACCEPT;
335 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
336 } /* else log failures? */
340 peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
343 krb5_context krbContext;
344 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
345 gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
346 gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
347 gss_cred_id_t cred = ctx->cred;
349 eapPeerConfig->identity = NULL;
350 eapPeerConfig->identity_len = 0;
351 eapPeerConfig->anonymous_identity = NULL;
352 eapPeerConfig->anonymous_identity_len = 0;
353 eapPeerConfig->password = NULL;
354 eapPeerConfig->password_len = 0;
356 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
358 GSSEAP_KRB_INIT(&krbContext);
360 eapPeerConfig->fragment_size = 1024;
365 GSSEAP_ASSERT(cred->name != GSS_C_NO_NAME);
367 if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
368 *minor = GSSEAP_BAD_INITIATOR_NAME;
369 return GSS_S_BAD_NAME;
373 major = gssEapDisplayName(minor, cred->name, &identity, NULL);
374 if (GSS_ERROR(major))
377 eapPeerConfig->identity = (unsigned char *)identity.value;
378 eapPeerConfig->identity_len = identity.length;
380 krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
382 /* anonymous_identity */
383 eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
384 if (eapPeerConfig->anonymous_identity == NULL) {
386 return GSS_S_FAILURE;
389 eapPeerConfig->anonymous_identity[0] = '@';
390 memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
391 eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
392 eapPeerConfig->anonymous_identity_len = 1 + realm.length;
395 eapPeerConfig->password = (unsigned char *)cred->password.value;
396 eapPeerConfig->password_len = cred->password.length;
399 eapPeerConfig->ca_cert = (unsigned char *)cred->caCertificate.value;
400 eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
401 eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
403 /* eap channel binding */
404 if (ctx->initiatorCtx.chbindData != NULL) {
405 struct eap_peer_chbind_config *chbind_config =
406 (struct eap_peer_chbind_config *)GSSEAP_MALLOC(sizeof(struct eap_peer_chbind_config));
407 if (chbind_config == NULL) {
409 return GSS_S_FAILURE;
412 chbind_config->req_data = wpabuf_mhead_u8(ctx->initiatorCtx.chbindData);
413 chbind_config->req_data_len = wpabuf_len(ctx->initiatorCtx.chbindData);
414 chbind_config->nsid = CHBIND_NSID_RADIUS;
415 chbind_config->response_cb = &peerProcessChbindResponse;
416 chbind_config->ctx = ctx;
417 eapPeerConfig->chbind_config = chbind_config;
418 eapPeerConfig->chbind_config_len = 1;
420 eapPeerConfig->chbind_config = NULL;
421 eapPeerConfig->chbind_config_len = 0;
425 return GSS_S_COMPLETE;
429 peerConfigFree(OM_uint32 *minor,
432 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
434 if (eapPeerConfig->identity != NULL) {
435 GSSEAP_FREE(eapPeerConfig->identity);
436 eapPeerConfig->identity = NULL;
437 eapPeerConfig->identity_len = 0;
440 if (eapPeerConfig->anonymous_identity != NULL) {
441 GSSEAP_FREE(eapPeerConfig->anonymous_identity);
442 eapPeerConfig->anonymous_identity = NULL;
443 eapPeerConfig->anonymous_identity_len = 0;
447 return GSS_S_COMPLETE;
451 * Mark an initiator context as ready for cryptographic operations
454 initReady(OM_uint32 *minor, gss_ctx_id_t ctx)
457 const unsigned char *key;
460 /* Cache encryption type derived from selected mechanism OID */
461 major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
462 if (GSS_ERROR(major))
465 if (!eap_key_available(ctx->initiatorCtx.eap)) {
466 *minor = GSSEAP_KEY_UNAVAILABLE;
467 return GSS_S_UNAVAILABLE;
470 key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
472 if (keyLength < EAP_EMSK_LEN) {
473 *minor = GSSEAP_KEY_TOO_SHORT;
474 return GSS_S_UNAVAILABLE;
477 major = gssEapDeriveRfc3961Key(minor,
478 &key[EAP_EMSK_LEN / 2],
482 if (GSS_ERROR(major))
485 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
487 if (GSS_ERROR(major))
490 major = sequenceInit(minor,
493 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
494 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
496 if (GSS_ERROR(major))
500 return GSS_S_COMPLETE;
504 initBegin(OM_uint32 *minor,
508 OM_uint32 reqFlags GSSEAP_UNUSED,
510 gss_channel_bindings_t chanBindings GSSEAP_UNUSED)
513 gss_cred_id_t cred = ctx->cred;
515 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
517 if (cred->expiryTime)
518 ctx->expiryTime = cred->expiryTime;
519 else if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
522 ctx->expiryTime = time(NULL) + timeReq;
525 * The credential mutex protects its name, however we need to
526 * explicitly lock the acceptor name (unlikely as it may be
527 * that it has attributes set on it).
529 major = gssEapDuplicateName(minor, cred->name, &ctx->initiatorName);
530 if (GSS_ERROR(major))
533 if (target != GSS_C_NO_NAME) {
534 GSSEAP_MUTEX_LOCK(&target->mutex);
536 major = gssEapDuplicateName(minor, target, &ctx->acceptorName);
537 if (GSS_ERROR(major)) {
538 GSSEAP_MUTEX_UNLOCK(&target->mutex);
542 GSSEAP_MUTEX_UNLOCK(&target->mutex);
545 major = gssEapCanonicalizeOid(minor,
547 OID_FLAG_NULL_VALID | OID_FLAG_MAP_NULL_TO_DEFAULT_MECH,
548 &ctx->mechanismUsed);
549 if (GSS_ERROR(major))
552 /* If credentials were provided, check they're usable with this mech */
553 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
554 *minor = GSSEAP_CRED_MECH_MISMATCH;
555 return GSS_S_BAD_MECH;
559 return GSS_S_COMPLETE;
563 eapGssSmInitError(OM_uint32 *minor,
564 gss_cred_id_t cred GSSEAP_UNUSED,
565 gss_ctx_id_t ctx GSSEAP_UNUSED,
566 gss_name_t target GSSEAP_UNUSED,
567 gss_OID mech GSSEAP_UNUSED,
568 OM_uint32 reqFlags GSSEAP_UNUSED,
569 OM_uint32 timeReq GSSEAP_UNUSED,
570 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
571 gss_buffer_t inputToken,
572 gss_buffer_t outputToken GSSEAP_UNUSED,
573 OM_uint32 *smFlags GSSEAP_UNUSED)
578 if (inputToken->length < 8) {
579 *minor = GSSEAP_TOK_TRUNC;
580 return GSS_S_DEFECTIVE_TOKEN;
583 p = (unsigned char *)inputToken->value;
585 major = load_uint32_be(&p[0]);
586 *minor = ERROR_TABLE_BASE_eapg + load_uint32_be(&p[4]);
588 if (!GSS_ERROR(major) || !IS_WIRE_ERROR(*minor)) {
589 major = GSS_S_FAILURE;
590 *minor = GSSEAP_BAD_ERROR_TOKEN;
593 GSSEAP_ASSERT(GSS_ERROR(major));
598 #ifdef GSSEAP_ENABLE_REAUTH
600 eapGssSmInitGssReauth(OM_uint32 *minor,
604 gss_OID mech GSSEAP_UNUSED,
607 gss_channel_bindings_t chanBindings,
608 gss_buffer_t inputToken,
609 gss_buffer_t outputToken,
610 OM_uint32 *smFlags GSSEAP_UNUSED)
612 OM_uint32 major, tmpMinor;
613 gss_name_t mechTarget = GSS_C_NO_NAME;
614 gss_OID actualMech = GSS_C_NO_OID;
615 OM_uint32 gssFlags, timeRec;
618 * Here we use the passed in credential handle because the resolved
619 * context credential does not currently have the reauth creds.
621 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
622 if (!gssEapCanReauthP(cred, target, timeReq))
623 return GSS_S_CONTINUE_NEEDED;
625 ctx->flags |= CTX_FLAG_KRB_REAUTH;
626 } else if ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
627 major = GSS_S_DEFECTIVE_TOKEN;
628 *minor = GSSEAP_WRONG_ITOK;
632 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
634 major = gssEapMechToGlueName(minor, target, &mechTarget);
635 if (GSS_ERROR(major))
638 major = gssInitSecContext(minor,
642 (gss_OID)gss_mech_krb5,
643 reqFlags | GSS_C_MUTUAL_FLAG,
651 if (GSS_ERROR(major))
654 ctx->gssFlags = gssFlags;
656 if (major == GSS_S_COMPLETE) {
657 GSSEAP_ASSERT(GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE);
659 major = gssEapReauthComplete(minor, ctx, cred, actualMech, timeRec);
660 if (GSS_ERROR(major))
662 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
664 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_REAUTHENTICATE);
668 gssReleaseName(&tmpMinor, &mechTarget);
672 #endif /* GSSEAP_ENABLE_REAUTH */
676 eapGssSmInitVendorInfo(OM_uint32 *minor,
677 gss_cred_id_t cred GSSEAP_UNUSED,
678 gss_ctx_id_t ctx GSSEAP_UNUSED,
679 gss_name_t target GSSEAP_UNUSED,
680 gss_OID mech GSSEAP_UNUSED,
681 OM_uint32 reqFlags GSSEAP_UNUSED,
682 OM_uint32 timeReq GSSEAP_UNUSED,
683 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
684 gss_buffer_t inputToken GSSEAP_UNUSED,
685 gss_buffer_t outputToken,
686 OM_uint32 *smFlags GSSEAP_UNUSED)
690 major = makeStringBuffer(minor, "JANET(UK)", outputToken);
691 if (GSS_ERROR(major))
694 return GSS_S_CONTINUE_NEEDED;
699 eapGssSmInitAcceptorName(OM_uint32 *minor,
700 gss_cred_id_t cred GSSEAP_UNUSED,
702 gss_name_t target GSSEAP_UNUSED,
703 gss_OID mech GSSEAP_UNUSED,
704 OM_uint32 reqFlags GSSEAP_UNUSED,
705 OM_uint32 timeReq GSSEAP_UNUSED,
706 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
707 gss_buffer_t inputToken GSSEAP_UNUSED,
708 gss_buffer_t outputToken,
709 OM_uint32 *smFlags GSSEAP_UNUSED)
713 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL &&
714 ctx->acceptorName != GSS_C_NO_NAME) {
716 /* Send desired target name to acceptor */
717 major = gssEapDisplayName(minor, ctx->acceptorName,
719 if (GSS_ERROR(major))
721 } else if (inputToken != GSS_C_NO_BUFFER) {
726 /* Accept target name hint from acceptor or verify acceptor */
727 major = gssEapImportName(minor, inputToken,
731 if (GSS_ERROR(major))
734 if (ctx->acceptorName != GSS_C_NO_NAME) {
735 /* verify name hint matched asserted acceptor name */
736 major = gssEapCompareName(minor,
739 COMPARE_NAME_FLAG_IGNORE_EMPTY_REALMS,
741 if (GSS_ERROR(major)) {
742 gssEapReleaseName(&tmpMinor, &nameHint);
746 gssEapReleaseName(&tmpMinor, &nameHint);
749 *minor = GSSEAP_WRONG_ACCEPTOR_NAME;
750 return GSS_S_DEFECTIVE_TOKEN;
752 } else { /* acceptor name is no_name */
753 /* accept acceptor name hint */
754 ctx->acceptorName = nameHint;
755 nameHint = GSS_C_NO_NAME;
761 * Currently, other parts of the code assume that the acceptor name
762 * is available, hence this check.
764 if (ctx->acceptorName == GSS_C_NO_NAME) {
765 *minor = GSSEAP_NO_ACCEPTOR_NAME;
766 return GSS_S_FAILURE;
770 * Generate channel binding data
772 if (ctx->initiatorCtx.chbindData == NULL) {
773 major = peerInitEapChannelBinding(minor, ctx);
774 if (GSS_ERROR(major))
778 return GSS_S_CONTINUE_NEEDED;
782 eapGssSmInitIdentity(OM_uint32 *minor,
783 gss_cred_id_t cred GSSEAP_UNUSED,
785 gss_name_t target GSSEAP_UNUSED,
786 gss_OID mech GSSEAP_UNUSED,
787 OM_uint32 reqFlags GSSEAP_UNUSED,
788 OM_uint32 timeReq GSSEAP_UNUSED,
789 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
790 gss_buffer_t inputToken GSSEAP_UNUSED,
791 gss_buffer_t outputToken GSSEAP_UNUSED,
794 struct eap_config eapConfig;
796 #ifdef GSSEAP_ENABLE_REAUTH
797 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
800 /* server didn't support reauthentication, sent EAP request */
801 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
802 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
803 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
806 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
808 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
809 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
811 memset(&eapConfig, 0, sizeof(eapConfig));
813 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
814 &gssEapPolicyCallbacks,
817 if (ctx->initiatorCtx.eap == NULL) {
818 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
819 return GSS_S_FAILURE;
822 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
824 /* poke EAP state machine */
825 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
826 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
827 return GSS_S_FAILURE;
830 GSSEAP_SM_TRANSITION_NEXT(ctx);
834 return GSS_S_CONTINUE_NEEDED;
838 eapGssSmInitAuthenticate(OM_uint32 *minor,
839 gss_cred_id_t cred GSSEAP_UNUSED,
841 gss_name_t target GSSEAP_UNUSED,
842 gss_OID mech GSSEAP_UNUSED,
843 OM_uint32 reqFlags GSSEAP_UNUSED,
844 OM_uint32 timeReq GSSEAP_UNUSED,
845 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
846 gss_buffer_t inputToken GSSEAP_UNUSED,
847 gss_buffer_t outputToken,
852 struct wpabuf *resp = NULL;
856 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
858 major = peerConfigInit(minor, ctx);
859 if (GSS_ERROR(major))
862 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
863 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
865 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
867 wpabuf_set(&ctx->initiatorCtx.reqData,
868 inputToken->value, inputToken->length);
870 major = GSS_S_CONTINUE_NEEDED;
872 eap_peer_sm_step(ctx->initiatorCtx.eap);
873 if (ctx->flags & CTX_FLAG_EAP_RESP) {
874 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
876 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
877 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
878 major = initReady(minor, ctx);
879 if (GSS_ERROR(major))
882 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
883 major = GSS_S_CONTINUE_NEEDED;
884 GSSEAP_SM_TRANSITION_NEXT(ctx);
885 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
886 major = GSS_S_DEFECTIVE_CREDENTIAL;
887 *minor = GSSEAP_PEER_AUTH_FAILURE;
889 major = GSS_S_DEFECTIVE_TOKEN;
890 *minor = GSSEAP_PEER_BAD_MESSAGE;
896 gss_buffer_desc respBuf;
898 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
900 respBuf.length = wpabuf_len(resp);
901 respBuf.value = (void *)wpabuf_head(resp);
903 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
904 if (GSS_ERROR(tmpMajor)) {
909 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
912 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
913 peerConfigFree(&tmpMinor, ctx);
919 eapGssSmInitGssFlags(OM_uint32 *minor,
920 gss_cred_id_t cred GSSEAP_UNUSED,
922 gss_name_t target GSSEAP_UNUSED,
923 gss_OID mech GSSEAP_UNUSED,
924 OM_uint32 reqFlags GSSEAP_UNUSED,
925 OM_uint32 timeReq GSSEAP_UNUSED,
926 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
927 gss_buffer_t inputToken GSSEAP_UNUSED,
928 gss_buffer_t outputToken,
929 OM_uint32 *smFlags GSSEAP_UNUSED)
931 unsigned char wireFlags[4];
932 gss_buffer_desc flagsBuf;
934 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
936 flagsBuf.length = sizeof(wireFlags);
937 flagsBuf.value = wireFlags;
939 return duplicateBuffer(minor, &flagsBuf, outputToken);
943 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
944 gss_cred_id_t cred GSSEAP_UNUSED,
946 gss_name_t target GSSEAP_UNUSED,
947 gss_OID mech GSSEAP_UNUSED,
948 OM_uint32 reqFlags GSSEAP_UNUSED,
949 OM_uint32 timeReq GSSEAP_UNUSED,
950 gss_channel_bindings_t chanBindings,
951 gss_buffer_t inputToken GSSEAP_UNUSED,
952 gss_buffer_t outputToken,
956 krb5_error_code code;
957 krb5_context krbContext;
960 gss_buffer_desc cksumBuffer;
962 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
963 chanBindings->application_data.length == 0)
964 return GSS_S_CONTINUE_NEEDED;
966 GSSEAP_KRB_INIT(&krbContext);
968 KRB_DATA_INIT(&data);
970 gssBufferToKrbData(&chanBindings->application_data, &data);
972 code = krb5_c_make_checksum(krbContext, ctx->checksumType,
974 KEY_USAGE_GSSEAP_CHBIND_MIC,
978 return GSS_S_FAILURE;
981 cksumBuffer.length = KRB_CHECKSUM_LENGTH(&cksum);
982 cksumBuffer.value = KRB_CHECKSUM_DATA(&cksum);
984 major = duplicateBuffer(minor, &cksumBuffer, outputToken);
985 if (GSS_ERROR(major)) {
986 krb5_free_checksum_contents(krbContext, &cksum);
991 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
993 krb5_free_checksum_contents(krbContext, &cksum);
995 return GSS_S_CONTINUE_NEEDED;
999 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
1000 gss_cred_id_t cred GSSEAP_UNUSED,
1002 gss_name_t target GSSEAP_UNUSED,
1003 gss_OID mech GSSEAP_UNUSED,
1004 OM_uint32 reqFlags GSSEAP_UNUSED,
1005 OM_uint32 timeReq GSSEAP_UNUSED,
1006 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1007 gss_buffer_t inputToken GSSEAP_UNUSED,
1008 gss_buffer_t outputToken,
1013 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
1014 if (GSS_ERROR(major))
1017 GSSEAP_SM_TRANSITION_NEXT(ctx);
1020 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1022 return GSS_S_CONTINUE_NEEDED;
1025 #ifdef GSSEAP_ENABLE_REAUTH
1027 eapGssSmInitReauthCreds(OM_uint32 *minor,
1030 gss_name_t target GSSEAP_UNUSED,
1031 gss_OID mech GSSEAP_UNUSED,
1032 OM_uint32 reqFlags GSSEAP_UNUSED,
1033 OM_uint32 timeReq GSSEAP_UNUSED,
1034 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1035 gss_buffer_t inputToken,
1036 gss_buffer_t outputToken GSSEAP_UNUSED,
1037 OM_uint32 *smFlags GSSEAP_UNUSED)
1041 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
1042 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
1043 if (GSS_ERROR(major))
1048 return GSS_S_CONTINUE_NEEDED;
1050 #endif /* GSSEAP_ENABLE_REAUTH */
1053 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
1054 gss_cred_id_t cred GSSEAP_UNUSED,
1056 gss_name_t target GSSEAP_UNUSED,
1057 gss_OID mech GSSEAP_UNUSED,
1058 OM_uint32 reqFlags GSSEAP_UNUSED,
1059 OM_uint32 timeReq GSSEAP_UNUSED,
1060 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1061 gss_buffer_t inputToken,
1062 gss_buffer_t outputToken GSSEAP_UNUSED,
1063 OM_uint32 *smFlags GSSEAP_UNUSED)
1067 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
1068 if (GSS_ERROR(major))
1072 * As a temporary measure, force mutual authentication until channel binding is
1073 * more widely deployed.
1075 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
1076 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1080 return GSS_S_COMPLETE;
1083 static struct gss_eap_sm eapGssInitiatorSm[] = {
1085 ITOK_TYPE_CONTEXT_ERR,
1087 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
1092 ITOK_TYPE_ACCEPTOR_NAME_RESP,
1093 ITOK_TYPE_ACCEPTOR_NAME_REQ,
1094 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE |
1095 GSSEAP_STATE_ACCEPTOR_EXTS,
1097 eapGssSmInitAcceptorName
1102 ITOK_TYPE_VENDOR_INFO,
1103 GSSEAP_STATE_INITIAL,
1105 eapGssSmInitVendorInfo
1108 #ifdef GSSEAP_ENABLE_REAUTH
1110 ITOK_TYPE_REAUTH_RESP,
1111 ITOK_TYPE_REAUTH_REQ,
1112 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
1114 eapGssSmInitGssReauth
1120 #ifdef GSSEAP_ENABLE_REAUTH
1121 GSSEAP_STATE_REAUTHENTICATE |
1123 GSSEAP_STATE_INITIAL,
1124 SM_ITOK_FLAG_REQUIRED,
1125 eapGssSmInitIdentity
1130 GSSEAP_STATE_AUTHENTICATE,
1131 SM_ITOK_FLAG_REQUIRED,
1132 eapGssSmInitAuthenticate
1136 ITOK_TYPE_GSS_FLAGS,
1137 GSSEAP_STATE_INITIATOR_EXTS,
1139 eapGssSmInitGssFlags
1143 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
1144 GSSEAP_STATE_INITIATOR_EXTS,
1146 eapGssSmInitGssChannelBindings
1150 ITOK_TYPE_INITIATOR_MIC,
1151 GSSEAP_STATE_INITIATOR_EXTS,
1152 SM_ITOK_FLAG_REQUIRED,
1153 eapGssSmInitInitiatorMIC
1155 #ifdef GSSEAP_ENABLE_REAUTH
1157 ITOK_TYPE_REAUTH_CREDS,
1159 GSSEAP_STATE_ACCEPTOR_EXTS,
1161 eapGssSmInitReauthCreds
1164 /* other extensions go here */
1166 ITOK_TYPE_ACCEPTOR_MIC,
1168 GSSEAP_STATE_ACCEPTOR_EXTS,
1169 SM_ITOK_FLAG_REQUIRED,
1170 eapGssSmInitAcceptorMIC
1175 gssEapInitSecContext(OM_uint32 *minor,
1178 gss_name_t target_name,
1180 OM_uint32 req_flags,
1182 gss_channel_bindings_t input_chan_bindings,
1183 gss_buffer_t input_token,
1184 gss_OID *actual_mech_type,
1185 gss_buffer_t output_token,
1186 OM_uint32 *ret_flags,
1187 OM_uint32 *time_rec)
1189 OM_uint32 major, tmpMinor;
1190 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1193 * XXX is acquiring the credential lock here necessary? The password is
1194 * mutable but the contract could specify that this is not updated whilst
1195 * a context is being initialized.
1197 if (cred != GSS_C_NO_CREDENTIAL)
1198 GSSEAP_MUTEX_LOCK(&cred->mutex);
1200 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1201 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1202 if (GSS_ERROR(major))
1205 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1208 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1210 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1211 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1213 if (initialContextToken) {
1214 major = initBegin(minor, ctx, target_name, mech_type,
1215 req_flags, time_req, input_chan_bindings);
1216 if (GSS_ERROR(major))
1220 major = gssEapSmStep(minor,
1227 input_chan_bindings,
1231 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1232 if (GSS_ERROR(major))
1235 if (actual_mech_type != NULL) {
1238 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1239 if (GSS_ERROR(tmpMajor)) {
1246 if (ret_flags != NULL)
1247 *ret_flags = ctx->gssFlags;
1249 if (time_rec != NULL)
1250 gssEapContextTime(&tmpMinor, ctx, time_rec);
1252 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1255 if (cred != GSS_C_NO_CREDENTIAL)
1256 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1257 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1258 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1263 OM_uint32 GSSAPI_CALLCONV
1264 gss_init_sec_context(OM_uint32 *minor,
1266 gss_ctx_id_t *context_handle,
1267 gss_name_t target_name,
1269 OM_uint32 req_flags,
1271 gss_channel_bindings_t input_chan_bindings,
1272 gss_buffer_t input_token,
1273 gss_OID *actual_mech_type,
1274 gss_buffer_t output_token,
1275 OM_uint32 *ret_flags,
1276 OM_uint32 *time_rec)
1278 OM_uint32 major, tmpMinor;
1279 gss_ctx_id_t ctx = *context_handle;
1283 output_token->length = 0;
1284 output_token->value = NULL;
1286 if (ctx == GSS_C_NO_CONTEXT) {
1287 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1288 *minor = GSSEAP_WRONG_SIZE;
1289 return GSS_S_DEFECTIVE_TOKEN;
1292 major = gssEapAllocContext(minor, &ctx);
1293 if (GSS_ERROR(major))
1296 ctx->flags |= CTX_FLAG_INITIATOR;
1298 *context_handle = ctx;
1301 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1303 major = gssEapInitSecContext(minor,
1310 input_chan_bindings,
1317 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1319 if (GSS_ERROR(major))
1320 gssEapReleaseContext(&tmpMinor, context_handle);