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,
176 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
179 if (strcmp(name, "client-cert") == 0)
180 index = CONFIG_BLOB_CLIENT_CERT;
181 else if (strcmp(name, "private-key") == 0)
182 index = CONFIG_BLOB_PRIVATE_KEY;
186 return &gssCtx->initiatorCtx.configBlobs[index];
190 peerNotifyPending(void *ctx GSSEAP_UNUSED)
194 static struct eapol_callbacks gssEapPolicyCallbacks = {
207 extern int wpa_debug_level;
210 #define CHBIND_SERVICE_NAME_FLAG 0x01
211 #define CHBIND_HOST_NAME_FLAG 0x02
212 #define CHBIND_SERVICE_SPECIFIC_FLAG 0x04
213 #define CHBIND_REALM_NAME_FLAG 0x08
216 peerInitEapChannelBinding(OM_uint32 *minor, gss_ctx_id_t ctx)
218 struct wpabuf *buf = NULL;
219 unsigned int chbindReqFlags = 0;
220 krb5_principal princ = NULL;
221 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
222 OM_uint32 major = GSS_S_COMPLETE;
223 krb5_context krbContext = NULL;
225 /* XXX is this check redundant? */
226 if (ctx->acceptorName == GSS_C_NO_NAME) {
227 major = GSS_S_BAD_NAME;
228 *minor = GSSEAP_NO_ACCEPTOR_NAME;
232 princ = ctx->acceptorName->krbPrincipal;
234 krbPrincComponentToGssBuffer(princ, 0, &nameBuf);
235 if (nameBuf.length > 0) {
236 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_SERVICE_NAME,
238 if (GSS_ERROR(major))
241 chbindReqFlags |= CHBIND_SERVICE_NAME_FLAG;
244 krbPrincComponentToGssBuffer(princ, 1, &nameBuf);
245 if (nameBuf.length > 0) {
246 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_HOST_NAME,
248 if (GSS_ERROR(major))
251 chbindReqFlags |= CHBIND_HOST_NAME_FLAG;
254 GSSEAP_KRB_INIT(&krbContext);
256 *minor = krbPrincUnparseServiceSpecifics(krbContext, princ, &nameBuf);
260 if (nameBuf.length > 0) {
261 major = gssEapRadiusAddAttr(minor, &buf,
262 PW_GSS_ACCEPTOR_SERVICE_SPECIFICS,
264 if (GSS_ERROR(major))
267 chbindReqFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
270 krbFreeUnparsedName(krbContext, &nameBuf);
271 krbPrincRealmToGssBuffer(princ, &nameBuf);
273 if (nameBuf.length > 0) {
274 major = gssEapRadiusAddAttr(minor, &buf,
275 PW_GSS_ACCEPTOR_REALM_NAME,
277 chbindReqFlags |= CHBIND_REALM_NAME_FLAG;
280 if (chbindReqFlags == 0) {
281 major = GSS_S_BAD_NAME;
282 *minor = GSSEAP_BAD_ACCEPTOR_NAME;
286 ctx->initiatorCtx.chbindData = buf;
287 ctx->initiatorCtx.chbindReqFlags = chbindReqFlags;
291 major = GSS_S_COMPLETE;
295 /*namebuf is freed when used and may be left with a unowned pointer*/
302 peerProcessChbindResponse(void *context, int code, int nsid,
303 u8 *data, size_t len)
306 gss_ctx_id_t ctx = (gss_ctx_id_t )context;
310 u32 chbindRetFlags = 0;
313 if (nsid != CHBIND_NSID_RADIUS)
318 msg = radius_parser_start(data, len);
322 while (radius_parser_parse_tlv(msg, &type, &vendor_id, &vsadata,
323 &vsadata_len) == 0) {
325 case PW_GSS_ACCEPTOR_SERVICE_NAME:
326 chbindRetFlags |= CHBIND_SERVICE_NAME_FLAG;
328 case PW_GSS_ACCEPTOR_HOST_NAME:
329 chbindRetFlags |= CHBIND_HOST_NAME_FLAG;
331 case PW_GSS_ACCEPTOR_SERVICE_SPECIFICS:
332 chbindRetFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
334 case PW_GSS_ACCEPTOR_REALM_NAME:
335 chbindRetFlags |= CHBIND_REALM_NAME_FLAG;
340 radius_parser_finish(msg);
342 if (code == CHBIND_CODE_SUCCESS &&
343 ((chbindRetFlags & ctx->initiatorCtx.chbindReqFlags) == ctx->initiatorCtx.chbindReqFlags)) {
344 ctx->flags |= CTX_FLAG_EAP_CHBIND_ACCEPT;
345 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
346 } /* else log failures? */
350 peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
353 krb5_context krbContext;
354 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
355 struct wpa_config_blob *configBlobs = ctx->initiatorCtx.configBlobs;
356 gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
357 gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
358 gss_cred_id_t cred = ctx->cred;
360 eapPeerConfig->identity = NULL;
361 eapPeerConfig->identity_len = 0;
362 eapPeerConfig->anonymous_identity = NULL;
363 eapPeerConfig->anonymous_identity_len = 0;
364 eapPeerConfig->password = NULL;
365 eapPeerConfig->password_len = 0;
367 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
369 GSSEAP_KRB_INIT(&krbContext);
371 eapPeerConfig->fragment_size = 1024;
376 GSSEAP_ASSERT(cred->name != GSS_C_NO_NAME);
378 if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
379 *minor = GSSEAP_BAD_INITIATOR_NAME;
380 return GSS_S_BAD_NAME;
384 major = gssEapDisplayName(minor, cred->name, &identity, NULL);
385 if (GSS_ERROR(major))
388 eapPeerConfig->identity = (unsigned char *)identity.value;
389 eapPeerConfig->identity_len = identity.length;
391 krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
393 /* anonymous_identity */
394 eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
395 if (eapPeerConfig->anonymous_identity == NULL) {
397 return GSS_S_FAILURE;
400 eapPeerConfig->anonymous_identity[0] = '@';
401 memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
402 eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
403 eapPeerConfig->anonymous_identity_len = 1 + realm.length;
406 if ((cred->flags & CRED_FLAG_CERTIFICATE) == 0) {
407 eapPeerConfig->password = (unsigned char *)cred->password.value;
408 eapPeerConfig->password_len = cred->password.length;
412 eapPeerConfig->ca_cert = (unsigned char *)cred->caCertificate.value;
413 eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
414 eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
416 /* eap channel binding */
417 if (ctx->initiatorCtx.chbindData != NULL) {
418 struct eap_peer_chbind_config *chbind_config =
419 (struct eap_peer_chbind_config *)GSSEAP_MALLOC(sizeof(struct eap_peer_chbind_config));
420 if (chbind_config == NULL) {
422 return GSS_S_FAILURE;
425 chbind_config->req_data = wpabuf_mhead_u8(ctx->initiatorCtx.chbindData);
426 chbind_config->req_data_len = wpabuf_len(ctx->initiatorCtx.chbindData);
427 chbind_config->nsid = CHBIND_NSID_RADIUS;
428 chbind_config->response_cb = &peerProcessChbindResponse;
429 chbind_config->ctx = ctx;
430 eapPeerConfig->chbind_config = chbind_config;
431 eapPeerConfig->chbind_config_len = 1;
433 eapPeerConfig->chbind_config = NULL;
434 eapPeerConfig->chbind_config_len = 0;
436 if (cred->flags & CRED_FLAG_CERTIFICATE) {
438 * CRED_FLAG_CONFIG_BLOB is an internal flag which will be used in the
439 * future to directly pass certificate and private key data to the
440 * EAP implementation, rather than an indirected string pointer.
442 if (cred->flags & CRED_FLAG_CONFIG_BLOB) {
443 eapPeerConfig->client_cert = (unsigned char *)"blob://client-cert";
444 configBlobs[CONFIG_BLOB_CLIENT_CERT].data = cred->clientCertificate.value;
445 configBlobs[CONFIG_BLOB_CLIENT_CERT].len = cred->clientCertificate.length;
447 eapPeerConfig->client_cert = (unsigned char *)"blob://private-key";
448 configBlobs[CONFIG_BLOB_PRIVATE_KEY].data = cred->clientCertificate.value;
449 configBlobs[CONFIG_BLOB_PRIVATE_KEY].len = cred->privateKey.length;
451 eapPeerConfig->client_cert = (unsigned char *)cred->clientCertificate.value;
452 eapPeerConfig->private_key = (unsigned char *)cred->privateKey.value;
454 eapPeerConfig->private_key_passwd = (unsigned char *)cred->password.value;
458 return GSS_S_COMPLETE;
462 peerConfigFree(OM_uint32 *minor,
465 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
467 if (eapPeerConfig->identity != NULL) {
468 GSSEAP_FREE(eapPeerConfig->identity);
469 eapPeerConfig->identity = NULL;
470 eapPeerConfig->identity_len = 0;
473 if (eapPeerConfig->anonymous_identity != NULL) {
474 GSSEAP_FREE(eapPeerConfig->anonymous_identity);
475 eapPeerConfig->anonymous_identity = NULL;
476 eapPeerConfig->anonymous_identity_len = 0;
480 return GSS_S_COMPLETE;
484 * Mark an initiator context as ready for cryptographic operations
487 initReady(OM_uint32 *minor, gss_ctx_id_t ctx)
490 const unsigned char *key;
493 /* Cache encryption type derived from selected mechanism OID */
494 major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
495 if (GSS_ERROR(major))
498 if (!eap_key_available(ctx->initiatorCtx.eap)) {
499 *minor = GSSEAP_KEY_UNAVAILABLE;
500 return GSS_S_UNAVAILABLE;
503 key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
505 if (keyLength < EAP_EMSK_LEN) {
506 *minor = GSSEAP_KEY_TOO_SHORT;
507 return GSS_S_UNAVAILABLE;
510 major = gssEapDeriveRfc3961Key(minor,
511 &key[EAP_EMSK_LEN / 2],
515 if (GSS_ERROR(major))
518 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
520 if (GSS_ERROR(major))
523 major = sequenceInit(minor,
526 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
527 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
529 if (GSS_ERROR(major))
533 return GSS_S_COMPLETE;
537 initBegin(OM_uint32 *minor,
541 OM_uint32 reqFlags GSSEAP_UNUSED,
543 gss_channel_bindings_t chanBindings GSSEAP_UNUSED)
546 gss_cred_id_t cred = ctx->cred;
548 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
550 if (cred->expiryTime)
551 ctx->expiryTime = cred->expiryTime;
552 else if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
555 ctx->expiryTime = time(NULL) + timeReq;
558 * The credential mutex protects its name, however we need to
559 * explicitly lock the acceptor name (unlikely as it may be
560 * that it has attributes set on it).
562 major = gssEapDuplicateName(minor, cred->name, &ctx->initiatorName);
563 if (GSS_ERROR(major))
566 if (target != GSS_C_NO_NAME) {
567 GSSEAP_MUTEX_LOCK(&target->mutex);
569 major = gssEapDuplicateName(minor, target, &ctx->acceptorName);
570 if (GSS_ERROR(major)) {
571 GSSEAP_MUTEX_UNLOCK(&target->mutex);
575 GSSEAP_MUTEX_UNLOCK(&target->mutex);
578 major = gssEapCanonicalizeOid(minor,
580 OID_FLAG_NULL_VALID | OID_FLAG_MAP_NULL_TO_DEFAULT_MECH,
581 &ctx->mechanismUsed);
582 if (GSS_ERROR(major))
585 /* If credentials were provided, check they're usable with this mech */
586 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
587 *minor = GSSEAP_CRED_MECH_MISMATCH;
588 return GSS_S_BAD_MECH;
592 return GSS_S_COMPLETE;
596 eapGssSmInitError(OM_uint32 *minor,
597 gss_cred_id_t cred GSSEAP_UNUSED,
598 gss_ctx_id_t ctx GSSEAP_UNUSED,
599 gss_name_t target GSSEAP_UNUSED,
600 gss_OID mech GSSEAP_UNUSED,
601 OM_uint32 reqFlags GSSEAP_UNUSED,
602 OM_uint32 timeReq GSSEAP_UNUSED,
603 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
604 gss_buffer_t inputToken,
605 gss_buffer_t outputToken GSSEAP_UNUSED,
606 OM_uint32 *smFlags GSSEAP_UNUSED)
611 if (inputToken->length < 8) {
612 *minor = GSSEAP_TOK_TRUNC;
613 return GSS_S_DEFECTIVE_TOKEN;
616 p = (unsigned char *)inputToken->value;
618 major = load_uint32_be(&p[0]);
619 *minor = ERROR_TABLE_BASE_eapg + load_uint32_be(&p[4]);
621 if (!GSS_ERROR(major) || !IS_WIRE_ERROR(*minor)) {
622 major = GSS_S_FAILURE;
623 *minor = GSSEAP_BAD_ERROR_TOKEN;
626 GSSEAP_ASSERT(GSS_ERROR(major));
631 #ifdef GSSEAP_ENABLE_REAUTH
633 eapGssSmInitGssReauth(OM_uint32 *minor,
637 gss_OID mech GSSEAP_UNUSED,
640 gss_channel_bindings_t chanBindings,
641 gss_buffer_t inputToken,
642 gss_buffer_t outputToken,
643 OM_uint32 *smFlags GSSEAP_UNUSED)
645 OM_uint32 major, tmpMinor;
646 gss_name_t mechTarget = GSS_C_NO_NAME;
647 gss_OID actualMech = GSS_C_NO_OID;
648 OM_uint32 gssFlags, timeRec;
651 * Here we use the passed in credential handle because the resolved
652 * context credential does not currently have the reauth creds.
654 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
655 if (!gssEapCanReauthP(cred, target, timeReq))
656 return GSS_S_CONTINUE_NEEDED;
658 ctx->flags |= CTX_FLAG_KRB_REAUTH;
659 } else if ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
660 major = GSS_S_DEFECTIVE_TOKEN;
661 *minor = GSSEAP_WRONG_ITOK;
665 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
667 major = gssEapMechToGlueName(minor, target, &mechTarget);
668 if (GSS_ERROR(major))
671 major = gssInitSecContext(minor,
675 (gss_OID)gss_mech_krb5,
676 reqFlags | GSS_C_MUTUAL_FLAG,
684 if (GSS_ERROR(major))
687 ctx->gssFlags = gssFlags;
689 if (major == GSS_S_COMPLETE) {
690 GSSEAP_ASSERT(GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE);
692 major = gssEapReauthComplete(minor, ctx, cred, actualMech, timeRec);
693 if (GSS_ERROR(major))
695 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
697 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_REAUTHENTICATE);
701 gssReleaseName(&tmpMinor, &mechTarget);
705 #endif /* GSSEAP_ENABLE_REAUTH */
709 eapGssSmInitVendorInfo(OM_uint32 *minor,
710 gss_cred_id_t cred GSSEAP_UNUSED,
711 gss_ctx_id_t ctx GSSEAP_UNUSED,
712 gss_name_t target GSSEAP_UNUSED,
713 gss_OID mech GSSEAP_UNUSED,
714 OM_uint32 reqFlags GSSEAP_UNUSED,
715 OM_uint32 timeReq GSSEAP_UNUSED,
716 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
717 gss_buffer_t inputToken GSSEAP_UNUSED,
718 gss_buffer_t outputToken,
719 OM_uint32 *smFlags GSSEAP_UNUSED)
723 major = makeStringBuffer(minor, "JANET(UK)", outputToken);
724 if (GSS_ERROR(major))
727 return GSS_S_CONTINUE_NEEDED;
732 eapGssSmInitAcceptorName(OM_uint32 *minor,
733 gss_cred_id_t cred GSSEAP_UNUSED,
735 gss_name_t target GSSEAP_UNUSED,
736 gss_OID mech GSSEAP_UNUSED,
737 OM_uint32 reqFlags GSSEAP_UNUSED,
738 OM_uint32 timeReq GSSEAP_UNUSED,
739 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
740 gss_buffer_t inputToken GSSEAP_UNUSED,
741 gss_buffer_t outputToken,
742 OM_uint32 *smFlags GSSEAP_UNUSED)
746 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL &&
747 ctx->acceptorName != GSS_C_NO_NAME) {
749 /* Send desired target name to acceptor */
750 major = gssEapDisplayName(minor, ctx->acceptorName,
752 if (GSS_ERROR(major))
754 } else if (inputToken != GSS_C_NO_BUFFER) {
759 /* Accept target name hint from acceptor or verify acceptor */
760 major = gssEapImportName(minor, inputToken,
764 if (GSS_ERROR(major))
767 if (ctx->acceptorName != GSS_C_NO_NAME) {
768 /* verify name hint matched asserted acceptor name */
769 major = gssEapCompareName(minor,
772 COMPARE_NAME_FLAG_IGNORE_EMPTY_REALMS,
774 if (GSS_ERROR(major)) {
775 gssEapReleaseName(&tmpMinor, &nameHint);
779 gssEapReleaseName(&tmpMinor, &nameHint);
782 *minor = GSSEAP_WRONG_ACCEPTOR_NAME;
783 return GSS_S_DEFECTIVE_TOKEN;
785 } else { /* acceptor name is no_name */
786 /* accept acceptor name hint */
787 ctx->acceptorName = nameHint;
788 nameHint = GSS_C_NO_NAME;
794 * Currently, other parts of the code assume that the acceptor name
795 * is available, hence this check.
797 if (ctx->acceptorName == GSS_C_NO_NAME) {
798 *minor = GSSEAP_NO_ACCEPTOR_NAME;
799 return GSS_S_FAILURE;
803 * Generate channel binding data
805 if (ctx->initiatorCtx.chbindData == NULL) {
806 major = peerInitEapChannelBinding(minor, ctx);
807 if (GSS_ERROR(major))
811 return GSS_S_CONTINUE_NEEDED;
815 eapGssSmInitIdentity(OM_uint32 *minor,
816 gss_cred_id_t cred GSSEAP_UNUSED,
818 gss_name_t target GSSEAP_UNUSED,
819 gss_OID mech GSSEAP_UNUSED,
820 OM_uint32 reqFlags GSSEAP_UNUSED,
821 OM_uint32 timeReq GSSEAP_UNUSED,
822 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
823 gss_buffer_t inputToken GSSEAP_UNUSED,
824 gss_buffer_t outputToken GSSEAP_UNUSED,
827 struct eap_config eapConfig;
829 #ifdef GSSEAP_ENABLE_REAUTH
830 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
833 /* server didn't support reauthentication, sent EAP request */
834 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
835 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
836 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
839 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
841 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
842 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
844 memset(&eapConfig, 0, sizeof(eapConfig));
846 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
847 &gssEapPolicyCallbacks,
850 if (ctx->initiatorCtx.eap == NULL) {
851 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
852 return GSS_S_FAILURE;
855 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
857 /* poke EAP state machine */
858 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
859 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
860 return GSS_S_FAILURE;
863 GSSEAP_SM_TRANSITION_NEXT(ctx);
867 return GSS_S_CONTINUE_NEEDED;
871 eapGssSmInitAuthenticate(OM_uint32 *minor,
872 gss_cred_id_t cred GSSEAP_UNUSED,
874 gss_name_t target GSSEAP_UNUSED,
875 gss_OID mech GSSEAP_UNUSED,
876 OM_uint32 reqFlags GSSEAP_UNUSED,
877 OM_uint32 timeReq GSSEAP_UNUSED,
878 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
879 gss_buffer_t inputToken GSSEAP_UNUSED,
880 gss_buffer_t outputToken,
885 struct wpabuf *resp = NULL;
889 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
891 major = peerConfigInit(minor, ctx);
892 if (GSS_ERROR(major))
895 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
896 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
898 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
900 wpabuf_set(&ctx->initiatorCtx.reqData,
901 inputToken->value, inputToken->length);
903 major = GSS_S_CONTINUE_NEEDED;
905 eap_peer_sm_step(ctx->initiatorCtx.eap);
906 if (ctx->flags & CTX_FLAG_EAP_RESP) {
907 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
909 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
910 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
911 major = initReady(minor, ctx);
912 if (GSS_ERROR(major))
915 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
916 major = GSS_S_CONTINUE_NEEDED;
917 GSSEAP_SM_TRANSITION_NEXT(ctx);
918 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
919 major = GSS_S_DEFECTIVE_CREDENTIAL;
920 *minor = GSSEAP_PEER_AUTH_FAILURE;
922 major = GSS_S_DEFECTIVE_TOKEN;
923 *minor = GSSEAP_PEER_BAD_MESSAGE;
929 gss_buffer_desc respBuf;
931 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
933 respBuf.length = wpabuf_len(resp);
934 respBuf.value = (void *)wpabuf_head(resp);
936 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
937 if (GSS_ERROR(tmpMajor)) {
942 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
945 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
946 peerConfigFree(&tmpMinor, ctx);
952 eapGssSmInitGssFlags(OM_uint32 *minor,
953 gss_cred_id_t cred GSSEAP_UNUSED,
955 gss_name_t target GSSEAP_UNUSED,
956 gss_OID mech GSSEAP_UNUSED,
957 OM_uint32 reqFlags GSSEAP_UNUSED,
958 OM_uint32 timeReq GSSEAP_UNUSED,
959 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
960 gss_buffer_t inputToken GSSEAP_UNUSED,
961 gss_buffer_t outputToken,
962 OM_uint32 *smFlags GSSEAP_UNUSED)
964 unsigned char wireFlags[4];
965 gss_buffer_desc flagsBuf;
967 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
969 flagsBuf.length = sizeof(wireFlags);
970 flagsBuf.value = wireFlags;
972 return duplicateBuffer(minor, &flagsBuf, outputToken);
976 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
977 gss_cred_id_t cred GSSEAP_UNUSED,
979 gss_name_t target GSSEAP_UNUSED,
980 gss_OID mech GSSEAP_UNUSED,
981 OM_uint32 reqFlags GSSEAP_UNUSED,
982 OM_uint32 timeReq GSSEAP_UNUSED,
983 gss_channel_bindings_t chanBindings,
984 gss_buffer_t inputToken GSSEAP_UNUSED,
985 gss_buffer_t outputToken,
989 krb5_error_code code;
990 krb5_context krbContext;
993 gss_buffer_desc cksumBuffer;
995 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
996 chanBindings->application_data.length == 0)
997 return GSS_S_CONTINUE_NEEDED;
999 GSSEAP_KRB_INIT(&krbContext);
1001 KRB_DATA_INIT(&data);
1003 gssBufferToKrbData(&chanBindings->application_data, &data);
1005 code = krb5_c_make_checksum(krbContext, ctx->checksumType,
1007 KEY_USAGE_GSSEAP_CHBIND_MIC,
1011 return GSS_S_FAILURE;
1014 cksumBuffer.length = KRB_CHECKSUM_LENGTH(&cksum);
1015 cksumBuffer.value = KRB_CHECKSUM_DATA(&cksum);
1017 major = duplicateBuffer(minor, &cksumBuffer, outputToken);
1018 if (GSS_ERROR(major)) {
1019 krb5_free_checksum_contents(krbContext, &cksum);
1024 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1026 krb5_free_checksum_contents(krbContext, &cksum);
1028 return GSS_S_CONTINUE_NEEDED;
1032 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
1033 gss_cred_id_t cred GSSEAP_UNUSED,
1035 gss_name_t target GSSEAP_UNUSED,
1036 gss_OID mech GSSEAP_UNUSED,
1037 OM_uint32 reqFlags GSSEAP_UNUSED,
1038 OM_uint32 timeReq GSSEAP_UNUSED,
1039 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1040 gss_buffer_t inputToken GSSEAP_UNUSED,
1041 gss_buffer_t outputToken,
1046 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
1047 if (GSS_ERROR(major))
1050 GSSEAP_SM_TRANSITION_NEXT(ctx);
1053 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1055 return GSS_S_CONTINUE_NEEDED;
1058 #ifdef GSSEAP_ENABLE_REAUTH
1060 eapGssSmInitReauthCreds(OM_uint32 *minor,
1063 gss_name_t target GSSEAP_UNUSED,
1064 gss_OID mech GSSEAP_UNUSED,
1065 OM_uint32 reqFlags GSSEAP_UNUSED,
1066 OM_uint32 timeReq GSSEAP_UNUSED,
1067 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1068 gss_buffer_t inputToken,
1069 gss_buffer_t outputToken GSSEAP_UNUSED,
1070 OM_uint32 *smFlags GSSEAP_UNUSED)
1074 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
1075 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
1076 if (GSS_ERROR(major))
1081 return GSS_S_CONTINUE_NEEDED;
1083 #endif /* GSSEAP_ENABLE_REAUTH */
1086 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
1087 gss_cred_id_t cred GSSEAP_UNUSED,
1089 gss_name_t target GSSEAP_UNUSED,
1090 gss_OID mech GSSEAP_UNUSED,
1091 OM_uint32 reqFlags GSSEAP_UNUSED,
1092 OM_uint32 timeReq GSSEAP_UNUSED,
1093 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1094 gss_buffer_t inputToken,
1095 gss_buffer_t outputToken GSSEAP_UNUSED,
1096 OM_uint32 *smFlags GSSEAP_UNUSED)
1100 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
1101 if (GSS_ERROR(major))
1104 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1108 return GSS_S_COMPLETE;
1111 static struct gss_eap_sm eapGssInitiatorSm[] = {
1113 ITOK_TYPE_CONTEXT_ERR,
1115 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
1120 ITOK_TYPE_ACCEPTOR_NAME_RESP,
1121 ITOK_TYPE_ACCEPTOR_NAME_REQ,
1122 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE |
1123 GSSEAP_STATE_ACCEPTOR_EXTS,
1125 eapGssSmInitAcceptorName
1130 ITOK_TYPE_VENDOR_INFO,
1131 GSSEAP_STATE_INITIAL,
1133 eapGssSmInitVendorInfo
1136 #ifdef GSSEAP_ENABLE_REAUTH
1138 ITOK_TYPE_REAUTH_RESP,
1139 ITOK_TYPE_REAUTH_REQ,
1140 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
1142 eapGssSmInitGssReauth
1148 #ifdef GSSEAP_ENABLE_REAUTH
1149 GSSEAP_STATE_REAUTHENTICATE |
1151 GSSEAP_STATE_INITIAL,
1152 SM_ITOK_FLAG_REQUIRED,
1153 eapGssSmInitIdentity
1158 GSSEAP_STATE_AUTHENTICATE,
1159 SM_ITOK_FLAG_REQUIRED,
1160 eapGssSmInitAuthenticate
1164 ITOK_TYPE_GSS_FLAGS,
1165 GSSEAP_STATE_INITIATOR_EXTS,
1167 eapGssSmInitGssFlags
1171 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
1172 GSSEAP_STATE_INITIATOR_EXTS,
1174 eapGssSmInitGssChannelBindings
1178 ITOK_TYPE_INITIATOR_MIC,
1179 GSSEAP_STATE_INITIATOR_EXTS,
1180 SM_ITOK_FLAG_REQUIRED,
1181 eapGssSmInitInitiatorMIC
1183 #ifdef GSSEAP_ENABLE_REAUTH
1185 ITOK_TYPE_REAUTH_CREDS,
1187 GSSEAP_STATE_ACCEPTOR_EXTS,
1189 eapGssSmInitReauthCreds
1192 /* other extensions go here */
1194 ITOK_TYPE_ACCEPTOR_MIC,
1196 GSSEAP_STATE_ACCEPTOR_EXTS,
1197 SM_ITOK_FLAG_REQUIRED,
1198 eapGssSmInitAcceptorMIC
1203 gssEapInitSecContext(OM_uint32 *minor,
1206 gss_name_t target_name,
1208 OM_uint32 req_flags,
1210 gss_channel_bindings_t input_chan_bindings,
1211 gss_buffer_t input_token,
1212 gss_OID *actual_mech_type,
1213 gss_buffer_t output_token,
1214 OM_uint32 *ret_flags,
1215 OM_uint32 *time_rec)
1217 OM_uint32 major, tmpMinor;
1218 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1221 * XXX is acquiring the credential lock here necessary? The password is
1222 * mutable but the contract could specify that this is not updated whilst
1223 * a context is being initialized.
1225 if (cred != GSS_C_NO_CREDENTIAL)
1226 GSSEAP_MUTEX_LOCK(&cred->mutex);
1228 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1229 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1230 if (GSS_ERROR(major))
1233 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1236 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1238 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1239 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1241 if (initialContextToken) {
1242 major = initBegin(minor, ctx, target_name, mech_type,
1243 req_flags, time_req, input_chan_bindings);
1244 if (GSS_ERROR(major))
1248 major = gssEapSmStep(minor,
1255 input_chan_bindings,
1259 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1260 if (GSS_ERROR(major))
1263 if (actual_mech_type != NULL) {
1266 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1267 if (GSS_ERROR(tmpMajor)) {
1274 if (ret_flags != NULL)
1275 *ret_flags = ctx->gssFlags;
1277 if (time_rec != NULL)
1278 gssEapContextTime(&tmpMinor, ctx, time_rec);
1280 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1283 if (cred != GSS_C_NO_CREDENTIAL)
1284 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1285 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1286 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1291 OM_uint32 GSSAPI_CALLCONV
1292 gss_init_sec_context(OM_uint32 *minor,
1294 gss_ctx_id_t *context_handle,
1295 gss_name_t target_name,
1297 OM_uint32 req_flags,
1299 gss_channel_bindings_t input_chan_bindings,
1300 gss_buffer_t input_token,
1301 gss_OID *actual_mech_type,
1302 gss_buffer_t output_token,
1303 OM_uint32 *ret_flags,
1304 OM_uint32 *time_rec)
1306 OM_uint32 major, tmpMinor;
1307 gss_ctx_id_t ctx = *context_handle;
1311 output_token->length = 0;
1312 output_token->value = NULL;
1314 if (ctx == GSS_C_NO_CONTEXT) {
1315 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1316 *minor = GSSEAP_WRONG_SIZE;
1317 return GSS_S_DEFECTIVE_TOKEN;
1320 major = gssEapAllocContext(minor, &ctx);
1321 if (GSS_ERROR(major))
1324 ctx->flags |= CTX_FLAG_INITIATOR;
1326 *context_handle = ctx;
1329 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1331 major = gssEapInitSecContext(minor,
1338 input_chan_bindings,
1345 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1347 if (GSS_ERROR(major))
1348 gssEapReleaseContext(&tmpMinor, context_handle);