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"
43 /* methods allowed for phase1 authentication*/
44 static const struct eap_method_type allowed_eap_method_types[] = {
45 {EAP_VENDOR_IETF, EAP_TYPE_TTLS},
46 {EAP_VENDOR_IETF, EAP_TYPE_NONE}};
49 policyVariableToFlag(enum eapol_bool_var variable)
54 case EAPOL_eapSuccess:
55 flag = CTX_FLAG_EAP_SUCCESS;
57 case EAPOL_eapRestart:
58 flag = CTX_FLAG_EAP_RESTART;
61 flag = CTX_FLAG_EAP_FAIL;
64 flag = CTX_FLAG_EAP_RESP;
67 flag = CTX_FLAG_EAP_NO_RESP;
70 flag = CTX_FLAG_EAP_REQ;
72 case EAPOL_portEnabled:
73 flag = CTX_FLAG_EAP_PORT_ENABLED;
76 flag = CTX_FLAG_EAP_ALT_ACCEPT;
79 flag = CTX_FLAG_EAP_ALT_REJECT;
81 case EAPOL_eapTriggerStart:
82 flag = CTX_FLAG_EAP_TRIGGER_START;
89 static struct eap_peer_config *
90 peerGetConfig(void *ctx)
92 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
94 return &gssCtx->initiatorCtx.eapPeerConfig;
98 peerGetBool(void *data, enum eapol_bool_var variable)
100 gss_ctx_id_t ctx = data;
103 if (ctx == GSS_C_NO_CONTEXT)
106 flag = policyVariableToFlag(variable);
108 return ((ctx->flags & flag) != 0);
112 peerSetBool(void *data, enum eapol_bool_var variable,
115 gss_ctx_id_t ctx = data;
118 if (ctx == GSS_C_NO_CONTEXT)
121 flag = policyVariableToFlag(variable);
126 ctx->flags &= ~(flag);
130 peerGetInt(void *data, enum eapol_int_var variable)
132 gss_ctx_id_t ctx = data;
134 if (ctx == GSS_C_NO_CONTEXT)
137 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
140 case EAPOL_idleWhile:
141 return ctx->initiatorCtx.idleWhile;
149 peerSetInt(void *data, enum eapol_int_var variable,
152 gss_ctx_id_t ctx = data;
154 if (ctx == GSS_C_NO_CONTEXT)
157 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
160 case EAPOL_idleWhile:
161 ctx->initiatorCtx.idleWhile = value;
166 static struct wpabuf *
167 peerGetEapReqData(void *ctx)
169 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
171 return &gssCtx->initiatorCtx.reqData;
175 peerSetConfigBlob(void *ctx GSSEAP_UNUSED,
176 struct wpa_config_blob *blob GSSEAP_UNUSED)
180 static const struct wpa_config_blob *
181 peerGetConfigBlob(void *ctx,
184 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
187 if (strcmp(name, "client-cert") == 0)
188 index = CONFIG_BLOB_CLIENT_CERT;
189 else if (strcmp(name, "private-key") == 0)
190 index = CONFIG_BLOB_PRIVATE_KEY;
191 else if (strcmp(name, "ca-cert") == 0)
192 index = CONFIG_BLOB_CA_CERT;
196 return &gssCtx->initiatorCtx.configBlobs[index];
200 peerNotifyPending(void *ctx GSSEAP_UNUSED)
204 static struct eapol_callbacks gssEapPolicyCallbacks = {
217 #define CHBIND_SERVICE_NAME_FLAG 0x01
218 #define CHBIND_HOST_NAME_FLAG 0x02
219 #define CHBIND_SERVICE_SPECIFIC_FLAG 0x04
220 #define CHBIND_REALM_NAME_FLAG 0x08
223 peerInitEapChannelBinding(OM_uint32 *minor, gss_ctx_id_t ctx)
225 struct wpabuf *buf = NULL;
226 unsigned int chbindReqFlags = 0;
227 krb5_principal princ = NULL;
228 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
229 OM_uint32 major = GSS_S_COMPLETE;
230 krb5_context krbContext = NULL;
232 /* XXX is this check redundant? */
233 if (ctx->acceptorName == GSS_C_NO_NAME) {
234 major = GSS_S_BAD_NAME;
235 *minor = GSSEAP_NO_ACCEPTOR_NAME;
239 princ = ctx->acceptorName->krbPrincipal;
241 krbPrincComponentToGssBuffer(princ, 0, &nameBuf);
242 if (nameBuf.length > 0) {
243 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_SERVICE_NAME,
245 if (GSS_ERROR(major))
248 chbindReqFlags |= CHBIND_SERVICE_NAME_FLAG;
251 krbPrincComponentToGssBuffer(princ, 1, &nameBuf);
252 if (nameBuf.length > 0) {
253 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_HOST_NAME,
255 if (GSS_ERROR(major))
258 chbindReqFlags |= CHBIND_HOST_NAME_FLAG;
261 GSSEAP_KRB_INIT(&krbContext);
263 *minor = krbPrincUnparseServiceSpecifics(krbContext, princ, &nameBuf);
267 if (nameBuf.length > 0) {
268 major = gssEapRadiusAddAttr(minor, &buf,
269 PW_GSS_ACCEPTOR_SERVICE_SPECIFICS,
271 if (GSS_ERROR(major))
274 chbindReqFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
277 krbFreeUnparsedName(krbContext, &nameBuf);
278 krbPrincRealmToGssBuffer(princ, &nameBuf);
280 if (nameBuf.length > 0) {
281 major = gssEapRadiusAddAttr(minor, &buf,
282 PW_GSS_ACCEPTOR_REALM_NAME,
284 if (GSS_ERROR(major))
287 chbindReqFlags |= CHBIND_REALM_NAME_FLAG;
290 if (chbindReqFlags == 0) {
291 major = GSS_S_BAD_NAME;
292 *minor = GSSEAP_BAD_ACCEPTOR_NAME;
296 ctx->initiatorCtx.chbindData = buf;
297 ctx->initiatorCtx.chbindReqFlags = chbindReqFlags;
301 major = GSS_S_COMPLETE;
305 /*namebuf is freed when used and may be left with a unowned pointer*/
312 peerProcessChbindResponse(void *context, int code, int nsid,
313 u8 *data, size_t len)
316 gss_ctx_id_t ctx = (gss_ctx_id_t )context;
320 u32 chbindRetFlags = 0;
323 if (nsid != CHBIND_NSID_RADIUS)
328 msg = radius_parser_start(data, len);
332 while (radius_parser_parse_tlv(msg, &type, &vendor_id, &vsadata,
333 &vsadata_len) == 0) {
335 case PW_GSS_ACCEPTOR_SERVICE_NAME:
336 chbindRetFlags |= CHBIND_SERVICE_NAME_FLAG;
338 case PW_GSS_ACCEPTOR_HOST_NAME:
339 chbindRetFlags |= CHBIND_HOST_NAME_FLAG;
341 case PW_GSS_ACCEPTOR_SERVICE_SPECIFICS:
342 chbindRetFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
344 case PW_GSS_ACCEPTOR_REALM_NAME:
345 chbindRetFlags |= CHBIND_REALM_NAME_FLAG;
350 radius_parser_finish(msg);
352 if (code == CHBIND_CODE_SUCCESS &&
353 ((chbindRetFlags & ctx->initiatorCtx.chbindReqFlags) == ctx->initiatorCtx.chbindReqFlags)) {
354 ctx->flags |= CTX_FLAG_EAP_CHBIND_ACCEPT;
355 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
356 } /* else log failures? */
360 peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
363 krb5_context krbContext;
364 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
365 struct wpa_config_blob *configBlobs = ctx->initiatorCtx.configBlobs;
366 gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
367 gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
368 gss_cred_id_t cred = ctx->cred;
370 eapPeerConfig->identity = NULL;
371 eapPeerConfig->identity_len = 0;
372 eapPeerConfig->anonymous_identity = NULL;
373 eapPeerConfig->anonymous_identity_len = 0;
374 eapPeerConfig->password = NULL;
375 eapPeerConfig->password_len = 0;
376 eapPeerConfig->eap_methods = (struct eap_method_type *) allowed_eap_method_types;
378 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
380 GSSEAP_KRB_INIT(&krbContext);
382 eapPeerConfig->fragment_size = 1024;
384 GSSEAP_ASSERT(cred->name != GSS_C_NO_NAME);
386 if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
387 *minor = GSSEAP_BAD_INITIATOR_NAME;
388 return GSS_S_BAD_NAME;
392 major = gssEapDisplayName(minor, cred->name, &identity, NULL);
393 if (GSS_ERROR(major))
396 eapPeerConfig->identity = (unsigned char *)identity.value;
397 eapPeerConfig->identity_len = identity.length;
399 krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
401 /* anonymous_identity */
402 eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
403 if (eapPeerConfig->anonymous_identity == NULL) {
405 return GSS_S_FAILURE;
408 eapPeerConfig->anonymous_identity[0] = '@';
409 memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
410 eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
411 eapPeerConfig->anonymous_identity_len = 1 + realm.length;
414 if ((cred->flags & CRED_FLAG_CERTIFICATE) == 0) {
415 eapPeerConfig->password = (unsigned char *)cred->password.value;
416 eapPeerConfig->password_len = cred->password.length;
420 eapPeerConfig->ca_cert = (unsigned char *)cred->caCertificate.value;
421 eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
422 eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
423 configBlobs[CONFIG_BLOB_CA_CERT].data = cred->caCertificateBlob.value;
424 configBlobs[CONFIG_BLOB_CA_CERT].len = cred->caCertificateBlob.length;
426 /* eap channel binding */
427 if (ctx->initiatorCtx.chbindData != NULL) {
428 struct eap_peer_chbind_config *chbind_config =
429 (struct eap_peer_chbind_config *)GSSEAP_MALLOC(sizeof(struct eap_peer_chbind_config));
430 if (chbind_config == NULL) {
432 return GSS_S_FAILURE;
435 chbind_config->req_data = wpabuf_mhead_u8(ctx->initiatorCtx.chbindData);
436 chbind_config->req_data_len = wpabuf_len(ctx->initiatorCtx.chbindData);
437 chbind_config->nsid = CHBIND_NSID_RADIUS;
438 chbind_config->response_cb = &peerProcessChbindResponse;
439 chbind_config->ctx = ctx;
440 eapPeerConfig->chbind_config = chbind_config;
441 eapPeerConfig->chbind_config_len = 1;
443 eapPeerConfig->chbind_config = NULL;
444 eapPeerConfig->chbind_config_len = 0;
446 if (cred->flags & CRED_FLAG_CERTIFICATE) {
448 * CRED_FLAG_CONFIG_BLOB is an internal flag which will be used in the
449 * future to directly pass certificate and private key data to the
450 * EAP implementation, rather than an indirected string pointer.
452 if (cred->flags & CRED_FLAG_CONFIG_BLOB) {
453 eapPeerConfig->client_cert = (unsigned char *)"blob://client-cert";
454 configBlobs[CONFIG_BLOB_CLIENT_CERT].data = cred->clientCertificate.value;
455 configBlobs[CONFIG_BLOB_CLIENT_CERT].len = cred->clientCertificate.length;
457 eapPeerConfig->client_cert = (unsigned char *)"blob://private-key";
458 configBlobs[CONFIG_BLOB_PRIVATE_KEY].data = cred->clientCertificate.value;
459 configBlobs[CONFIG_BLOB_PRIVATE_KEY].len = cred->privateKey.length;
461 eapPeerConfig->client_cert = (unsigned char *)cred->clientCertificate.value;
462 eapPeerConfig->private_key = (unsigned char *)cred->privateKey.value;
464 eapPeerConfig->private_key_passwd = (char *)cred->password.value;
468 return GSS_S_COMPLETE;
472 peerConfigFree(OM_uint32 *minor,
475 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
477 if (eapPeerConfig->identity != NULL) {
478 GSSEAP_FREE(eapPeerConfig->identity);
479 eapPeerConfig->identity = NULL;
480 eapPeerConfig->identity_len = 0;
483 if (eapPeerConfig->anonymous_identity != NULL) {
484 GSSEAP_FREE(eapPeerConfig->anonymous_identity);
485 eapPeerConfig->anonymous_identity = NULL;
486 eapPeerConfig->anonymous_identity_len = 0;
490 return GSS_S_COMPLETE;
494 * Mark an initiator context as ready for cryptographic operations
497 initReady(OM_uint32 *minor, gss_ctx_id_t ctx)
500 const unsigned char *key;
503 /* Cache encryption type derived from selected mechanism OID */
504 major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
505 if (GSS_ERROR(major))
508 if (!eap_key_available(ctx->initiatorCtx.eap)) {
509 *minor = GSSEAP_KEY_UNAVAILABLE;
510 return GSS_S_UNAVAILABLE;
513 key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
515 if (keyLength < EAP_EMSK_LEN) {
516 *minor = GSSEAP_KEY_TOO_SHORT;
517 return GSS_S_UNAVAILABLE;
520 major = gssEapDeriveRfc3961Key(minor,
521 &key[EAP_EMSK_LEN / 2],
525 if (GSS_ERROR(major))
528 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
530 if (GSS_ERROR(major))
533 major = sequenceInit(minor,
536 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
537 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
539 if (GSS_ERROR(major))
543 return GSS_S_COMPLETE;
547 initBegin(OM_uint32 *minor,
551 OM_uint32 reqFlags GSSEAP_UNUSED,
553 gss_channel_bindings_t chanBindings GSSEAP_UNUSED)
556 gss_cred_id_t cred = ctx->cred;
558 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
560 if (cred->expiryTime)
561 ctx->expiryTime = cred->expiryTime;
562 else if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
565 ctx->expiryTime = time(NULL) + timeReq;
568 * The credential mutex protects its name, however we need to
569 * explicitly lock the acceptor name (unlikely as it may be
570 * that it has attributes set on it).
572 major = gssEapDuplicateName(minor, cred->name, &ctx->initiatorName);
573 if (GSS_ERROR(major))
576 if (target != GSS_C_NO_NAME) {
577 GSSEAP_MUTEX_LOCK(&target->mutex);
579 major = gssEapDuplicateName(minor, target, &ctx->acceptorName);
580 if (GSS_ERROR(major)) {
581 GSSEAP_MUTEX_UNLOCK(&target->mutex);
585 GSSEAP_MUTEX_UNLOCK(&target->mutex);
588 major = gssEapCanonicalizeOid(minor,
590 OID_FLAG_NULL_VALID | OID_FLAG_MAP_NULL_TO_DEFAULT_MECH,
591 &ctx->mechanismUsed);
592 if (GSS_ERROR(major))
595 /* If credentials were provided, check they're usable with this mech */
596 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
597 *minor = GSSEAP_CRED_MECH_MISMATCH;
598 return GSS_S_BAD_MECH;
602 return GSS_S_COMPLETE;
606 eapGssSmInitError(OM_uint32 *minor,
607 gss_cred_id_t cred GSSEAP_UNUSED,
608 gss_ctx_id_t ctx GSSEAP_UNUSED,
609 gss_name_t target GSSEAP_UNUSED,
610 gss_OID mech GSSEAP_UNUSED,
611 OM_uint32 reqFlags GSSEAP_UNUSED,
612 OM_uint32 timeReq GSSEAP_UNUSED,
613 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
614 gss_buffer_t inputToken,
615 gss_buffer_t outputToken GSSEAP_UNUSED,
616 OM_uint32 *smFlags GSSEAP_UNUSED)
621 if (inputToken->length < 8) {
622 *minor = GSSEAP_TOK_TRUNC;
623 return GSS_S_DEFECTIVE_TOKEN;
626 p = (unsigned char *)inputToken->value;
628 major = load_uint32_be(&p[0]);
629 *minor = load_uint32_be(&p[4]);
630 if ((*minor >0) && (*minor < 128))
631 * minor += ERROR_TABLE_BASE_eapg;
634 if (!GSS_ERROR(major) || !IS_WIRE_ERROR(*minor)) {
635 major = GSS_S_FAILURE;
636 *minor = GSSEAP_BAD_ERROR_TOKEN;
639 GSSEAP_ASSERT(GSS_ERROR(major));
644 #ifdef GSSEAP_ENABLE_REAUTH
646 eapGssSmInitGssReauth(OM_uint32 *minor,
650 gss_OID mech GSSEAP_UNUSED,
653 gss_channel_bindings_t chanBindings,
654 gss_buffer_t inputToken,
655 gss_buffer_t outputToken,
656 OM_uint32 *smFlags GSSEAP_UNUSED)
658 OM_uint32 major, tmpMinor;
659 gss_name_t mechTarget = GSS_C_NO_NAME;
660 gss_OID actualMech = GSS_C_NO_OID;
661 OM_uint32 gssFlags, timeRec;
664 * Here we use the passed in credential handle because the resolved
665 * context credential does not currently have the reauth creds.
667 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
668 if (!gssEapCanReauthP(cred, target, timeReq))
669 return GSS_S_CONTINUE_NEEDED;
671 ctx->flags |= CTX_FLAG_KRB_REAUTH;
672 } else if ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
673 major = GSS_S_DEFECTIVE_TOKEN;
674 *minor = GSSEAP_WRONG_ITOK;
678 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
680 major = gssEapMechToGlueName(minor, target, &mechTarget);
681 if (GSS_ERROR(major))
684 major = gssInitSecContext(minor,
688 (gss_OID)gss_mech_krb5,
689 reqFlags | GSS_C_MUTUAL_FLAG,
697 if (GSS_ERROR(major))
700 ctx->gssFlags = gssFlags;
702 if (major == GSS_S_COMPLETE) {
703 GSSEAP_ASSERT(GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE);
705 major = gssEapReauthComplete(minor, ctx, cred, actualMech, timeRec);
706 if (GSS_ERROR(major))
708 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
710 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_REAUTHENTICATE);
714 gssReleaseName(&tmpMinor, &mechTarget);
718 #endif /* GSSEAP_ENABLE_REAUTH */
722 eapGssSmInitVendorInfo(OM_uint32 *minor,
723 gss_cred_id_t cred GSSEAP_UNUSED,
724 gss_ctx_id_t ctx GSSEAP_UNUSED,
725 gss_name_t target GSSEAP_UNUSED,
726 gss_OID mech GSSEAP_UNUSED,
727 OM_uint32 reqFlags GSSEAP_UNUSED,
728 OM_uint32 timeReq GSSEAP_UNUSED,
729 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
730 gss_buffer_t inputToken GSSEAP_UNUSED,
731 gss_buffer_t outputToken,
732 OM_uint32 *smFlags GSSEAP_UNUSED)
736 major = makeStringBuffer(minor, "JANET(UK)", outputToken);
737 if (GSS_ERROR(major))
740 return GSS_S_CONTINUE_NEEDED;
745 eapGssSmInitAcceptorName(OM_uint32 *minor,
746 gss_cred_id_t cred GSSEAP_UNUSED,
748 gss_name_t target GSSEAP_UNUSED,
749 gss_OID mech GSSEAP_UNUSED,
750 OM_uint32 reqFlags GSSEAP_UNUSED,
751 OM_uint32 timeReq GSSEAP_UNUSED,
752 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
753 gss_buffer_t inputToken GSSEAP_UNUSED,
754 gss_buffer_t outputToken,
755 OM_uint32 *smFlags GSSEAP_UNUSED)
759 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL &&
760 ctx->acceptorName != GSS_C_NO_NAME) {
762 /* Send desired target name to acceptor */
763 major = gssEapDisplayName(minor, ctx->acceptorName,
765 if (GSS_ERROR(major))
767 } else if (inputToken != GSS_C_NO_BUFFER) {
772 /* Accept target name hint from acceptor or verify acceptor */
773 major = gssEapImportName(minor, inputToken,
777 if (GSS_ERROR(major))
780 if (ctx->acceptorName != GSS_C_NO_NAME) {
781 /* verify name hint matched asserted acceptor name */
782 major = gssEapCompareName(minor,
785 COMPARE_NAME_FLAG_IGNORE_EMPTY_REALMS,
787 if (GSS_ERROR(major)) {
788 gssEapReleaseName(&tmpMinor, &nameHint);
792 gssEapReleaseName(&tmpMinor, &nameHint);
795 *minor = GSSEAP_WRONG_ACCEPTOR_NAME;
796 return GSS_S_DEFECTIVE_TOKEN;
798 } else { /* acceptor name is no_name */
799 /* accept acceptor name hint */
800 ctx->acceptorName = nameHint;
801 nameHint = GSS_C_NO_NAME;
807 * Currently, other parts of the code assume that the acceptor name
808 * is available, hence this check.
810 if (ctx->acceptorName == GSS_C_NO_NAME) {
811 *minor = GSSEAP_NO_ACCEPTOR_NAME;
812 return GSS_S_FAILURE;
816 * Generate channel binding data
818 if (ctx->initiatorCtx.chbindData == NULL) {
819 major = peerInitEapChannelBinding(minor, ctx);
820 if (GSS_ERROR(major))
824 return GSS_S_CONTINUE_NEEDED;
828 eapGssSmInitIdentity(OM_uint32 *minor,
829 gss_cred_id_t cred GSSEAP_UNUSED,
831 gss_name_t target GSSEAP_UNUSED,
832 gss_OID mech GSSEAP_UNUSED,
833 OM_uint32 reqFlags GSSEAP_UNUSED,
834 OM_uint32 timeReq GSSEAP_UNUSED,
835 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
836 gss_buffer_t inputToken GSSEAP_UNUSED,
837 gss_buffer_t outputToken GSSEAP_UNUSED,
840 struct eap_config eapConfig;
842 #ifdef GSSEAP_ENABLE_REAUTH
843 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
846 /* server didn't support reauthentication, sent EAP request */
847 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
848 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
849 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
852 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
854 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
855 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
857 memset(&eapConfig, 0, sizeof(eapConfig));
859 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
860 &gssEapPolicyCallbacks,
863 if (ctx->initiatorCtx.eap == NULL) {
864 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
865 return GSS_S_FAILURE;
868 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
870 /* poke EAP state machine */
871 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
872 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
873 return GSS_S_FAILURE;
876 GSSEAP_SM_TRANSITION_NEXT(ctx);
880 return GSS_S_CONTINUE_NEEDED;
884 eapGssSmInitAuthenticate(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 GSSEAP_UNUSED,
893 gss_buffer_t outputToken,
898 struct wpabuf *resp = NULL;
902 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
904 major = peerConfigInit(minor, ctx);
905 if (GSS_ERROR(major))
908 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
909 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
911 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
913 wpabuf_set(&ctx->initiatorCtx.reqData,
914 inputToken->value, inputToken->length);
916 major = GSS_S_CONTINUE_NEEDED;
918 eap_peer_sm_step(ctx->initiatorCtx.eap);
919 if (ctx->flags & CTX_FLAG_EAP_RESP) {
920 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
922 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
923 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
924 major = initReady(minor, ctx);
925 if (GSS_ERROR(major))
928 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
929 major = GSS_S_CONTINUE_NEEDED;
930 GSSEAP_SM_TRANSITION_NEXT(ctx);
931 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
932 major = GSS_S_DEFECTIVE_CREDENTIAL;
933 *minor = GSSEAP_PEER_AUTH_FAILURE;
935 major = GSS_S_DEFECTIVE_TOKEN;
936 *minor = GSSEAP_PEER_BAD_MESSAGE;
942 gss_buffer_desc respBuf;
944 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
946 respBuf.length = wpabuf_len(resp);
947 respBuf.value = (void *)wpabuf_head(resp);
949 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
950 if (GSS_ERROR(tmpMajor)) {
955 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
958 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
959 peerConfigFree(&tmpMinor, ctx);
965 eapGssSmInitGssFlags(OM_uint32 *minor,
966 gss_cred_id_t cred GSSEAP_UNUSED,
968 gss_name_t target GSSEAP_UNUSED,
969 gss_OID mech GSSEAP_UNUSED,
970 OM_uint32 reqFlags GSSEAP_UNUSED,
971 OM_uint32 timeReq GSSEAP_UNUSED,
972 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
973 gss_buffer_t inputToken GSSEAP_UNUSED,
974 gss_buffer_t outputToken,
975 OM_uint32 *smFlags GSSEAP_UNUSED)
977 unsigned char wireFlags[4];
978 gss_buffer_desc flagsBuf;
981 * As a temporary measure, force mutual authentication until channel binding is
982 * more widely deployed.
984 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
985 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
987 flagsBuf.length = sizeof(wireFlags);
988 flagsBuf.value = wireFlags;
990 return duplicateBuffer(minor, &flagsBuf, outputToken);
994 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
995 gss_cred_id_t cred GSSEAP_UNUSED,
997 gss_name_t target GSSEAP_UNUSED,
998 gss_OID mech GSSEAP_UNUSED,
999 OM_uint32 reqFlags GSSEAP_UNUSED,
1000 OM_uint32 timeReq GSSEAP_UNUSED,
1001 gss_channel_bindings_t chanBindings,
1002 gss_buffer_t inputToken GSSEAP_UNUSED,
1003 gss_buffer_t outputToken,
1007 krb5_error_code code;
1008 krb5_context krbContext;
1010 krb5_checksum cksum;
1011 gss_buffer_desc cksumBuffer;
1013 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
1014 chanBindings->application_data.length == 0)
1015 return GSS_S_CONTINUE_NEEDED;
1017 GSSEAP_KRB_INIT(&krbContext);
1019 KRB_DATA_INIT(&data);
1021 gssBufferToKrbData(&chanBindings->application_data, &data);
1023 code = krb5_c_make_checksum(krbContext, ctx->checksumType,
1025 KEY_USAGE_GSSEAP_CHBIND_MIC,
1029 return GSS_S_FAILURE;
1032 cksumBuffer.length = KRB_CHECKSUM_LENGTH(&cksum);
1033 cksumBuffer.value = KRB_CHECKSUM_DATA(&cksum);
1035 major = duplicateBuffer(minor, &cksumBuffer, outputToken);
1036 if (GSS_ERROR(major)) {
1037 krb5_free_checksum_contents(krbContext, &cksum);
1042 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1044 krb5_free_checksum_contents(krbContext, &cksum);
1046 return GSS_S_CONTINUE_NEEDED;
1050 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
1051 gss_cred_id_t cred GSSEAP_UNUSED,
1053 gss_name_t target GSSEAP_UNUSED,
1054 gss_OID mech GSSEAP_UNUSED,
1055 OM_uint32 reqFlags GSSEAP_UNUSED,
1056 OM_uint32 timeReq GSSEAP_UNUSED,
1057 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1058 gss_buffer_t inputToken GSSEAP_UNUSED,
1059 gss_buffer_t outputToken,
1064 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
1065 if (GSS_ERROR(major))
1068 GSSEAP_SM_TRANSITION_NEXT(ctx);
1071 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1073 return GSS_S_CONTINUE_NEEDED;
1076 #ifdef GSSEAP_ENABLE_REAUTH
1078 eapGssSmInitReauthCreds(OM_uint32 *minor,
1081 gss_name_t target GSSEAP_UNUSED,
1082 gss_OID mech GSSEAP_UNUSED,
1083 OM_uint32 reqFlags GSSEAP_UNUSED,
1084 OM_uint32 timeReq GSSEAP_UNUSED,
1085 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1086 gss_buffer_t inputToken,
1087 gss_buffer_t outputToken GSSEAP_UNUSED,
1088 OM_uint32 *smFlags GSSEAP_UNUSED)
1092 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
1093 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
1094 if (GSS_ERROR(major))
1099 return GSS_S_CONTINUE_NEEDED;
1101 #endif /* GSSEAP_ENABLE_REAUTH */
1104 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
1105 gss_cred_id_t cred GSSEAP_UNUSED,
1107 gss_name_t target GSSEAP_UNUSED,
1108 gss_OID mech GSSEAP_UNUSED,
1109 OM_uint32 reqFlags GSSEAP_UNUSED,
1110 OM_uint32 timeReq GSSEAP_UNUSED,
1111 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1112 gss_buffer_t inputToken,
1113 gss_buffer_t outputToken GSSEAP_UNUSED,
1114 OM_uint32 *smFlags GSSEAP_UNUSED)
1118 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
1119 if (GSS_ERROR(major))
1122 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1126 return GSS_S_COMPLETE;
1129 static struct gss_eap_sm eapGssInitiatorSm[] = {
1131 ITOK_TYPE_CONTEXT_ERR,
1133 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
1138 ITOK_TYPE_ACCEPTOR_NAME_RESP,
1139 ITOK_TYPE_ACCEPTOR_NAME_REQ,
1140 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE |
1141 GSSEAP_STATE_ACCEPTOR_EXTS,
1143 eapGssSmInitAcceptorName
1148 ITOK_TYPE_VENDOR_INFO,
1149 GSSEAP_STATE_INITIAL,
1151 eapGssSmInitVendorInfo
1154 #ifdef GSSEAP_ENABLE_REAUTH
1156 ITOK_TYPE_REAUTH_RESP,
1157 ITOK_TYPE_REAUTH_REQ,
1158 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
1160 eapGssSmInitGssReauth
1166 #ifdef GSSEAP_ENABLE_REAUTH
1167 GSSEAP_STATE_REAUTHENTICATE |
1169 GSSEAP_STATE_INITIAL,
1170 SM_ITOK_FLAG_REQUIRED,
1171 eapGssSmInitIdentity
1176 GSSEAP_STATE_AUTHENTICATE,
1177 SM_ITOK_FLAG_REQUIRED,
1178 eapGssSmInitAuthenticate
1182 ITOK_TYPE_GSS_FLAGS,
1183 GSSEAP_STATE_INITIATOR_EXTS,
1185 eapGssSmInitGssFlags
1189 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
1190 GSSEAP_STATE_INITIATOR_EXTS,
1192 eapGssSmInitGssChannelBindings
1196 ITOK_TYPE_INITIATOR_MIC,
1197 GSSEAP_STATE_INITIATOR_EXTS,
1198 SM_ITOK_FLAG_REQUIRED,
1199 eapGssSmInitInitiatorMIC
1201 #ifdef GSSEAP_ENABLE_REAUTH
1203 ITOK_TYPE_REAUTH_CREDS,
1205 GSSEAP_STATE_ACCEPTOR_EXTS,
1207 eapGssSmInitReauthCreds
1210 /* other extensions go here */
1212 ITOK_TYPE_ACCEPTOR_MIC,
1214 GSSEAP_STATE_ACCEPTOR_EXTS,
1215 SM_ITOK_FLAG_REQUIRED,
1216 eapGssSmInitAcceptorMIC
1221 gssEapInitSecContext(OM_uint32 *minor,
1224 gss_name_t target_name,
1226 OM_uint32 req_flags,
1228 gss_channel_bindings_t input_chan_bindings,
1229 gss_buffer_t input_token,
1230 gss_OID *actual_mech_type,
1231 gss_buffer_t output_token,
1232 OM_uint32 *ret_flags,
1233 OM_uint32 *time_rec)
1235 OM_uint32 major, tmpMinor;
1236 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1239 * XXX is acquiring the credential lock here necessary? The password is
1240 * mutable but the contract could specify that this is not updated whilst
1241 * a context is being initialized.
1243 if (cred != GSS_C_NO_CREDENTIAL)
1244 GSSEAP_MUTEX_LOCK(&cred->mutex);
1246 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1247 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1248 if (GSS_ERROR(major))
1251 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1254 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1256 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1257 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1259 if (initialContextToken) {
1260 major = initBegin(minor, ctx, target_name, mech_type,
1261 req_flags, time_req, input_chan_bindings);
1262 if (GSS_ERROR(major))
1266 major = gssEapSmStep(minor,
1273 input_chan_bindings,
1277 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1278 if (GSS_ERROR(major))
1281 if (actual_mech_type != NULL) {
1284 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1285 if (GSS_ERROR(tmpMajor)) {
1292 if (ret_flags != NULL)
1293 *ret_flags = ctx->gssFlags;
1295 if (time_rec != NULL)
1296 gssEapContextTime(&tmpMinor, ctx, time_rec);
1298 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1301 if (cred != GSS_C_NO_CREDENTIAL)
1302 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1303 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1304 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1309 OM_uint32 GSSAPI_CALLCONV
1310 gss_init_sec_context(OM_uint32 *minor,
1312 gss_ctx_id_t *context_handle,
1313 gss_name_t target_name,
1315 OM_uint32 req_flags,
1317 gss_channel_bindings_t input_chan_bindings,
1318 gss_buffer_t input_token,
1319 gss_OID *actual_mech_type,
1320 gss_buffer_t output_token,
1321 OM_uint32 *ret_flags,
1322 OM_uint32 *time_rec)
1324 OM_uint32 major, tmpMinor;
1325 gss_ctx_id_t ctx = *context_handle;
1329 output_token->length = 0;
1330 output_token->value = NULL;
1332 if (ctx == GSS_C_NO_CONTEXT) {
1333 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1334 *minor = GSSEAP_WRONG_SIZE;
1335 return GSS_S_DEFECTIVE_TOKEN;
1338 major = gssEapAllocContext(minor, &ctx);
1339 if (GSS_ERROR(major))
1342 ctx->flags |= CTX_FLAG_INITIATOR;
1344 *context_handle = ctx;
1347 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1349 major = gssEapInitSecContext(minor,
1356 input_chan_bindings,
1363 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1365 if (GSS_ERROR(major))
1366 gssEapReleaseContext(&tmpMinor, context_handle);
1368 gssEapTraceStatus( "gss_init_sec_context", major, *minor);