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;
86 static struct eap_peer_config *
87 peerGetConfig(void *ctx)
89 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
91 return &gssCtx->initiatorCtx.eapPeerConfig;
95 peerGetBool(void *data, enum eapol_bool_var variable)
97 gss_ctx_id_t ctx = data;
100 if (ctx == GSS_C_NO_CONTEXT)
103 flag = policyVariableToFlag(variable);
105 return ((ctx->flags & flag) != 0);
109 peerSetBool(void *data, enum eapol_bool_var variable,
112 gss_ctx_id_t ctx = data;
115 if (ctx == GSS_C_NO_CONTEXT)
118 flag = policyVariableToFlag(variable);
123 ctx->flags &= ~(flag);
127 peerGetInt(void *data, enum eapol_int_var variable)
129 gss_ctx_id_t ctx = data;
131 if (ctx == GSS_C_NO_CONTEXT)
134 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
137 case EAPOL_idleWhile:
138 return ctx->initiatorCtx.idleWhile;
146 peerSetInt(void *data, enum eapol_int_var variable,
149 gss_ctx_id_t ctx = data;
151 if (ctx == GSS_C_NO_CONTEXT)
154 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
157 case EAPOL_idleWhile:
158 ctx->initiatorCtx.idleWhile = value;
163 static struct wpabuf *
164 peerGetEapReqData(void *ctx)
166 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
168 return &gssCtx->initiatorCtx.reqData;
172 peerSetConfigBlob(void *ctx GSSEAP_UNUSED,
173 struct wpa_config_blob *blob GSSEAP_UNUSED)
177 static const struct wpa_config_blob *
178 peerGetConfigBlob(void *ctx,
181 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
184 if (strcmp(name, "client-cert") == 0)
185 index = CONFIG_BLOB_CLIENT_CERT;
186 else if (strcmp(name, "private-key") == 0)
187 index = CONFIG_BLOB_PRIVATE_KEY;
188 else if (strcmp(name, "ca-cert") == 0)
189 index = CONFIG_BLOB_CA_CERT;
193 return &gssCtx->initiatorCtx.configBlobs[index];
197 peerNotifyPending(void *ctx GSSEAP_UNUSED)
201 static struct eapol_callbacks gssEapPolicyCallbacks = {
214 #define CHBIND_SERVICE_NAME_FLAG 0x01
215 #define CHBIND_HOST_NAME_FLAG 0x02
216 #define CHBIND_SERVICE_SPECIFIC_FLAG 0x04
217 #define CHBIND_REALM_NAME_FLAG 0x08
220 peerInitEapChannelBinding(OM_uint32 *minor, gss_ctx_id_t ctx)
222 struct wpabuf *buf = NULL;
223 unsigned int chbindReqFlags = 0;
224 krb5_principal princ = NULL;
225 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
226 OM_uint32 major = GSS_S_COMPLETE;
227 krb5_context krbContext = NULL;
229 /* XXX is this check redundant? */
230 if (ctx->acceptorName == GSS_C_NO_NAME) {
231 major = GSS_S_BAD_NAME;
232 *minor = GSSEAP_NO_ACCEPTOR_NAME;
236 princ = ctx->acceptorName->krbPrincipal;
238 krbPrincComponentToGssBuffer(princ, 0, &nameBuf);
239 if (nameBuf.length > 0) {
240 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_SERVICE_NAME,
242 if (GSS_ERROR(major))
245 chbindReqFlags |= CHBIND_SERVICE_NAME_FLAG;
248 krbPrincComponentToGssBuffer(princ, 1, &nameBuf);
249 if (nameBuf.length > 0) {
250 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_HOST_NAME,
252 if (GSS_ERROR(major))
255 chbindReqFlags |= CHBIND_HOST_NAME_FLAG;
258 GSSEAP_KRB_INIT(&krbContext);
260 *minor = krbPrincUnparseServiceSpecifics(krbContext, princ, &nameBuf);
264 if (nameBuf.length > 0) {
265 major = gssEapRadiusAddAttr(minor, &buf,
266 PW_GSS_ACCEPTOR_SERVICE_SPECIFICS,
268 if (GSS_ERROR(major))
271 chbindReqFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
274 krbFreeUnparsedName(krbContext, &nameBuf);
275 krbPrincRealmToGssBuffer(princ, &nameBuf);
277 if (nameBuf.length > 0) {
278 major = gssEapRadiusAddAttr(minor, &buf,
279 PW_GSS_ACCEPTOR_REALM_NAME,
281 if (GSS_ERROR(major))
284 chbindReqFlags |= CHBIND_REALM_NAME_FLAG;
287 if (chbindReqFlags == 0) {
288 major = GSS_S_BAD_NAME;
289 *minor = GSSEAP_BAD_ACCEPTOR_NAME;
293 ctx->initiatorCtx.chbindData = buf;
294 ctx->initiatorCtx.chbindReqFlags = chbindReqFlags;
298 major = GSS_S_COMPLETE;
302 /*namebuf is freed when used and may be left with a unowned pointer*/
309 peerProcessChbindResponse(void *context, int code, int nsid,
310 u8 *data, size_t len)
313 gss_ctx_id_t ctx = (gss_ctx_id_t )context;
317 u32 chbindRetFlags = 0;
320 if (nsid != CHBIND_NSID_RADIUS)
325 msg = radius_parser_start(data, len);
329 while (radius_parser_parse_tlv(msg, &type, &vendor_id, &vsadata,
330 &vsadata_len) == 0) {
332 case PW_GSS_ACCEPTOR_SERVICE_NAME:
333 chbindRetFlags |= CHBIND_SERVICE_NAME_FLAG;
335 case PW_GSS_ACCEPTOR_HOST_NAME:
336 chbindRetFlags |= CHBIND_HOST_NAME_FLAG;
338 case PW_GSS_ACCEPTOR_SERVICE_SPECIFICS:
339 chbindRetFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
341 case PW_GSS_ACCEPTOR_REALM_NAME:
342 chbindRetFlags |= CHBIND_REALM_NAME_FLAG;
347 radius_parser_finish(msg);
349 if (code == CHBIND_CODE_SUCCESS &&
350 ((chbindRetFlags & ctx->initiatorCtx.chbindReqFlags) == ctx->initiatorCtx.chbindReqFlags)) {
351 ctx->flags |= CTX_FLAG_EAP_CHBIND_ACCEPT;
352 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
353 } /* else log failures? */
357 peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
360 krb5_context krbContext;
361 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
362 struct wpa_config_blob *configBlobs = ctx->initiatorCtx.configBlobs;
363 gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
364 gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
365 gss_cred_id_t cred = ctx->cred;
367 eapPeerConfig->identity = NULL;
368 eapPeerConfig->identity_len = 0;
369 eapPeerConfig->anonymous_identity = NULL;
370 eapPeerConfig->anonymous_identity_len = 0;
371 eapPeerConfig->password = NULL;
372 eapPeerConfig->password_len = 0;
373 eapPeerConfig->eap_methods = (struct eap_method_type *) allowed_eap_method_types;
375 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
377 GSSEAP_KRB_INIT(&krbContext);
379 eapPeerConfig->fragment_size = 1024;
381 GSSEAP_ASSERT(cred->name != GSS_C_NO_NAME);
383 if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
384 *minor = GSSEAP_BAD_INITIATOR_NAME;
385 return GSS_S_BAD_NAME;
389 major = gssEapDisplayName(minor, cred->name, &identity, NULL);
390 if (GSS_ERROR(major))
393 eapPeerConfig->identity = (unsigned char *)identity.value;
394 eapPeerConfig->identity_len = identity.length;
396 krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
398 /* anonymous_identity */
399 eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
400 if (eapPeerConfig->anonymous_identity == NULL) {
402 return GSS_S_FAILURE;
405 eapPeerConfig->anonymous_identity[0] = '@';
406 memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
407 eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
408 eapPeerConfig->anonymous_identity_len = 1 + realm.length;
411 if ((cred->flags & CRED_FLAG_CERTIFICATE) == 0) {
412 eapPeerConfig->password = (unsigned char *)cred->password.value;
413 eapPeerConfig->password_len = cred->password.length;
417 eapPeerConfig->ca_cert = (unsigned char *)cred->caCertificate.value;
418 eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
419 eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
420 configBlobs[CONFIG_BLOB_CA_CERT].data = cred->caCertificateBlob.value;
421 configBlobs[CONFIG_BLOB_CA_CERT].len = cred->caCertificateBlob.length;
423 /* eap channel binding */
424 if (ctx->initiatorCtx.chbindData != NULL) {
425 struct eap_peer_chbind_config *chbind_config =
426 (struct eap_peer_chbind_config *)GSSEAP_MALLOC(sizeof(struct eap_peer_chbind_config));
427 if (chbind_config == NULL) {
429 return GSS_S_FAILURE;
432 chbind_config->req_data = wpabuf_mhead_u8(ctx->initiatorCtx.chbindData);
433 chbind_config->req_data_len = wpabuf_len(ctx->initiatorCtx.chbindData);
434 chbind_config->nsid = CHBIND_NSID_RADIUS;
435 chbind_config->response_cb = &peerProcessChbindResponse;
436 chbind_config->ctx = ctx;
437 eapPeerConfig->chbind_config = chbind_config;
438 eapPeerConfig->chbind_config_len = 1;
440 eapPeerConfig->chbind_config = NULL;
441 eapPeerConfig->chbind_config_len = 0;
443 if (cred->flags & CRED_FLAG_CERTIFICATE) {
445 * CRED_FLAG_CONFIG_BLOB is an internal flag which will be used in the
446 * future to directly pass certificate and private key data to the
447 * EAP implementation, rather than an indirected string pointer.
449 if (cred->flags & CRED_FLAG_CONFIG_BLOB) {
450 eapPeerConfig->client_cert = (unsigned char *)"blob://client-cert";
451 configBlobs[CONFIG_BLOB_CLIENT_CERT].data = cred->clientCertificate.value;
452 configBlobs[CONFIG_BLOB_CLIENT_CERT].len = cred->clientCertificate.length;
454 eapPeerConfig->client_cert = (unsigned char *)"blob://private-key";
455 configBlobs[CONFIG_BLOB_PRIVATE_KEY].data = cred->clientCertificate.value;
456 configBlobs[CONFIG_BLOB_PRIVATE_KEY].len = cred->privateKey.length;
458 eapPeerConfig->client_cert = (unsigned char *)cred->clientCertificate.value;
459 eapPeerConfig->private_key = (unsigned char *)cred->privateKey.value;
461 eapPeerConfig->private_key_passwd = (unsigned char *)cred->password.value;
465 return GSS_S_COMPLETE;
469 peerConfigFree(OM_uint32 *minor,
472 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
474 if (eapPeerConfig->identity != NULL) {
475 GSSEAP_FREE(eapPeerConfig->identity);
476 eapPeerConfig->identity = NULL;
477 eapPeerConfig->identity_len = 0;
480 if (eapPeerConfig->anonymous_identity != NULL) {
481 GSSEAP_FREE(eapPeerConfig->anonymous_identity);
482 eapPeerConfig->anonymous_identity = NULL;
483 eapPeerConfig->anonymous_identity_len = 0;
487 return GSS_S_COMPLETE;
491 * Mark an initiator context as ready for cryptographic operations
494 initReady(OM_uint32 *minor, gss_ctx_id_t ctx)
497 const unsigned char *key;
500 /* Cache encryption type derived from selected mechanism OID */
501 major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
502 if (GSS_ERROR(major))
505 if (!eap_key_available(ctx->initiatorCtx.eap)) {
506 *minor = GSSEAP_KEY_UNAVAILABLE;
507 return GSS_S_UNAVAILABLE;
510 key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
512 if (keyLength < EAP_EMSK_LEN) {
513 *minor = GSSEAP_KEY_TOO_SHORT;
514 return GSS_S_UNAVAILABLE;
517 major = gssEapDeriveRfc3961Key(minor,
518 &key[EAP_EMSK_LEN / 2],
522 if (GSS_ERROR(major))
525 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
527 if (GSS_ERROR(major))
530 major = sequenceInit(minor,
533 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
534 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
536 if (GSS_ERROR(major))
540 return GSS_S_COMPLETE;
544 initBegin(OM_uint32 *minor,
548 OM_uint32 reqFlags GSSEAP_UNUSED,
550 gss_channel_bindings_t chanBindings GSSEAP_UNUSED)
553 gss_cred_id_t cred = ctx->cred;
555 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
557 if (cred->expiryTime)
558 ctx->expiryTime = cred->expiryTime;
559 else if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
562 ctx->expiryTime = time(NULL) + timeReq;
565 * The credential mutex protects its name, however we need to
566 * explicitly lock the acceptor name (unlikely as it may be
567 * that it has attributes set on it).
569 major = gssEapDuplicateName(minor, cred->name, &ctx->initiatorName);
570 if (GSS_ERROR(major))
573 if (target != GSS_C_NO_NAME) {
574 GSSEAP_MUTEX_LOCK(&target->mutex);
576 major = gssEapDuplicateName(minor, target, &ctx->acceptorName);
577 if (GSS_ERROR(major)) {
578 GSSEAP_MUTEX_UNLOCK(&target->mutex);
582 GSSEAP_MUTEX_UNLOCK(&target->mutex);
585 major = gssEapCanonicalizeOid(minor,
587 OID_FLAG_NULL_VALID | OID_FLAG_MAP_NULL_TO_DEFAULT_MECH,
588 &ctx->mechanismUsed);
589 if (GSS_ERROR(major))
592 /* If credentials were provided, check they're usable with this mech */
593 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
594 *minor = GSSEAP_CRED_MECH_MISMATCH;
595 return GSS_S_BAD_MECH;
599 return GSS_S_COMPLETE;
603 eapGssSmInitError(OM_uint32 *minor,
604 gss_cred_id_t cred GSSEAP_UNUSED,
605 gss_ctx_id_t ctx GSSEAP_UNUSED,
606 gss_name_t target GSSEAP_UNUSED,
607 gss_OID mech GSSEAP_UNUSED,
608 OM_uint32 reqFlags GSSEAP_UNUSED,
609 OM_uint32 timeReq GSSEAP_UNUSED,
610 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
611 gss_buffer_t inputToken,
612 gss_buffer_t outputToken GSSEAP_UNUSED,
613 OM_uint32 *smFlags GSSEAP_UNUSED)
618 if (inputToken->length < 8) {
619 *minor = GSSEAP_TOK_TRUNC;
620 return GSS_S_DEFECTIVE_TOKEN;
623 p = (unsigned char *)inputToken->value;
625 major = load_uint32_be(&p[0]);
626 *minor = load_uint32_be(&p[4]);
627 if ((*minor >0) && (*minor < 128))
628 * minor += ERROR_TABLE_BASE_eapg;
631 if (!GSS_ERROR(major) || !IS_WIRE_ERROR(*minor)) {
632 major = GSS_S_FAILURE;
633 *minor = GSSEAP_BAD_ERROR_TOKEN;
636 GSSEAP_ASSERT(GSS_ERROR(major));
641 #ifdef GSSEAP_ENABLE_REAUTH
643 eapGssSmInitGssReauth(OM_uint32 *minor,
647 gss_OID mech GSSEAP_UNUSED,
650 gss_channel_bindings_t chanBindings,
651 gss_buffer_t inputToken,
652 gss_buffer_t outputToken,
653 OM_uint32 *smFlags GSSEAP_UNUSED)
655 OM_uint32 major, tmpMinor;
656 gss_name_t mechTarget = GSS_C_NO_NAME;
657 gss_OID actualMech = GSS_C_NO_OID;
658 OM_uint32 gssFlags, timeRec;
661 * Here we use the passed in credential handle because the resolved
662 * context credential does not currently have the reauth creds.
664 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
665 if (!gssEapCanReauthP(cred, target, timeReq))
666 return GSS_S_CONTINUE_NEEDED;
668 ctx->flags |= CTX_FLAG_KRB_REAUTH;
669 } else if ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
670 major = GSS_S_DEFECTIVE_TOKEN;
671 *minor = GSSEAP_WRONG_ITOK;
675 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
677 major = gssEapMechToGlueName(minor, target, &mechTarget);
678 if (GSS_ERROR(major))
681 major = gssInitSecContext(minor,
685 (gss_OID)gss_mech_krb5,
686 reqFlags | GSS_C_MUTUAL_FLAG,
694 if (GSS_ERROR(major))
697 ctx->gssFlags = gssFlags;
699 if (major == GSS_S_COMPLETE) {
700 GSSEAP_ASSERT(GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE);
702 major = gssEapReauthComplete(minor, ctx, cred, actualMech, timeRec);
703 if (GSS_ERROR(major))
705 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
707 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_REAUTHENTICATE);
711 gssReleaseName(&tmpMinor, &mechTarget);
715 #endif /* GSSEAP_ENABLE_REAUTH */
719 eapGssSmInitVendorInfo(OM_uint32 *minor,
720 gss_cred_id_t cred GSSEAP_UNUSED,
721 gss_ctx_id_t ctx GSSEAP_UNUSED,
722 gss_name_t target GSSEAP_UNUSED,
723 gss_OID mech GSSEAP_UNUSED,
724 OM_uint32 reqFlags GSSEAP_UNUSED,
725 OM_uint32 timeReq GSSEAP_UNUSED,
726 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
727 gss_buffer_t inputToken GSSEAP_UNUSED,
728 gss_buffer_t outputToken,
729 OM_uint32 *smFlags GSSEAP_UNUSED)
733 major = makeStringBuffer(minor, "JANET(UK)", outputToken);
734 if (GSS_ERROR(major))
737 return GSS_S_CONTINUE_NEEDED;
742 eapGssSmInitAcceptorName(OM_uint32 *minor,
743 gss_cred_id_t cred GSSEAP_UNUSED,
745 gss_name_t target GSSEAP_UNUSED,
746 gss_OID mech GSSEAP_UNUSED,
747 OM_uint32 reqFlags GSSEAP_UNUSED,
748 OM_uint32 timeReq GSSEAP_UNUSED,
749 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
750 gss_buffer_t inputToken GSSEAP_UNUSED,
751 gss_buffer_t outputToken,
752 OM_uint32 *smFlags GSSEAP_UNUSED)
756 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL &&
757 ctx->acceptorName != GSS_C_NO_NAME) {
759 /* Send desired target name to acceptor */
760 major = gssEapDisplayName(minor, ctx->acceptorName,
762 if (GSS_ERROR(major))
764 } else if (inputToken != GSS_C_NO_BUFFER) {
769 /* Accept target name hint from acceptor or verify acceptor */
770 major = gssEapImportName(minor, inputToken,
774 if (GSS_ERROR(major))
777 if (ctx->acceptorName != GSS_C_NO_NAME) {
778 /* verify name hint matched asserted acceptor name */
779 major = gssEapCompareName(minor,
782 COMPARE_NAME_FLAG_IGNORE_EMPTY_REALMS,
784 if (GSS_ERROR(major)) {
785 gssEapReleaseName(&tmpMinor, &nameHint);
789 gssEapReleaseName(&tmpMinor, &nameHint);
792 *minor = GSSEAP_WRONG_ACCEPTOR_NAME;
793 return GSS_S_DEFECTIVE_TOKEN;
795 } else { /* acceptor name is no_name */
796 /* accept acceptor name hint */
797 ctx->acceptorName = nameHint;
798 nameHint = GSS_C_NO_NAME;
804 * Currently, other parts of the code assume that the acceptor name
805 * is available, hence this check.
807 if (ctx->acceptorName == GSS_C_NO_NAME) {
808 *minor = GSSEAP_NO_ACCEPTOR_NAME;
809 return GSS_S_FAILURE;
813 * Generate channel binding data
815 if (ctx->initiatorCtx.chbindData == NULL) {
816 major = peerInitEapChannelBinding(minor, ctx);
817 if (GSS_ERROR(major))
821 return GSS_S_CONTINUE_NEEDED;
825 eapGssSmInitIdentity(OM_uint32 *minor,
826 gss_cred_id_t cred GSSEAP_UNUSED,
828 gss_name_t target GSSEAP_UNUSED,
829 gss_OID mech GSSEAP_UNUSED,
830 OM_uint32 reqFlags GSSEAP_UNUSED,
831 OM_uint32 timeReq GSSEAP_UNUSED,
832 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
833 gss_buffer_t inputToken GSSEAP_UNUSED,
834 gss_buffer_t outputToken GSSEAP_UNUSED,
837 struct eap_config eapConfig;
839 #ifdef GSSEAP_ENABLE_REAUTH
840 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
843 /* server didn't support reauthentication, sent EAP request */
844 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
845 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
846 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
849 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
851 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
852 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
854 memset(&eapConfig, 0, sizeof(eapConfig));
856 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
857 &gssEapPolicyCallbacks,
860 if (ctx->initiatorCtx.eap == NULL) {
861 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
862 return GSS_S_FAILURE;
865 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
867 /* poke EAP state machine */
868 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
869 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
870 return GSS_S_FAILURE;
873 GSSEAP_SM_TRANSITION_NEXT(ctx);
877 return GSS_S_CONTINUE_NEEDED;
881 eapGssSmInitAuthenticate(OM_uint32 *minor,
882 gss_cred_id_t cred GSSEAP_UNUSED,
884 gss_name_t target GSSEAP_UNUSED,
885 gss_OID mech GSSEAP_UNUSED,
886 OM_uint32 reqFlags GSSEAP_UNUSED,
887 OM_uint32 timeReq GSSEAP_UNUSED,
888 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
889 gss_buffer_t inputToken GSSEAP_UNUSED,
890 gss_buffer_t outputToken,
895 struct wpabuf *resp = NULL;
899 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
901 major = peerConfigInit(minor, ctx);
902 if (GSS_ERROR(major))
905 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
906 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
908 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
910 wpabuf_set(&ctx->initiatorCtx.reqData,
911 inputToken->value, inputToken->length);
913 major = GSS_S_CONTINUE_NEEDED;
915 eap_peer_sm_step(ctx->initiatorCtx.eap);
916 if (ctx->flags & CTX_FLAG_EAP_RESP) {
917 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
919 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
920 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
921 major = initReady(minor, ctx);
922 if (GSS_ERROR(major))
925 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
926 major = GSS_S_CONTINUE_NEEDED;
927 GSSEAP_SM_TRANSITION_NEXT(ctx);
928 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
929 major = GSS_S_DEFECTIVE_CREDENTIAL;
930 *minor = GSSEAP_PEER_AUTH_FAILURE;
932 major = GSS_S_DEFECTIVE_TOKEN;
933 *minor = GSSEAP_PEER_BAD_MESSAGE;
939 gss_buffer_desc respBuf;
941 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
943 respBuf.length = wpabuf_len(resp);
944 respBuf.value = (void *)wpabuf_head(resp);
946 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
947 if (GSS_ERROR(tmpMajor)) {
952 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
955 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
956 peerConfigFree(&tmpMinor, ctx);
962 eapGssSmInitGssFlags(OM_uint32 *minor,
963 gss_cred_id_t cred GSSEAP_UNUSED,
965 gss_name_t target GSSEAP_UNUSED,
966 gss_OID mech GSSEAP_UNUSED,
967 OM_uint32 reqFlags GSSEAP_UNUSED,
968 OM_uint32 timeReq GSSEAP_UNUSED,
969 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
970 gss_buffer_t inputToken GSSEAP_UNUSED,
971 gss_buffer_t outputToken,
972 OM_uint32 *smFlags GSSEAP_UNUSED)
974 unsigned char wireFlags[4];
975 gss_buffer_desc flagsBuf;
978 * As a temporary measure, force mutual authentication until channel binding is
979 * more widely deployed.
981 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
982 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
984 flagsBuf.length = sizeof(wireFlags);
985 flagsBuf.value = wireFlags;
987 return duplicateBuffer(minor, &flagsBuf, outputToken);
991 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
992 gss_cred_id_t cred GSSEAP_UNUSED,
994 gss_name_t target GSSEAP_UNUSED,
995 gss_OID mech GSSEAP_UNUSED,
996 OM_uint32 reqFlags GSSEAP_UNUSED,
997 OM_uint32 timeReq GSSEAP_UNUSED,
998 gss_channel_bindings_t chanBindings,
999 gss_buffer_t inputToken GSSEAP_UNUSED,
1000 gss_buffer_t outputToken,
1004 krb5_error_code code;
1005 krb5_context krbContext;
1007 krb5_checksum cksum;
1008 gss_buffer_desc cksumBuffer;
1010 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
1011 chanBindings->application_data.length == 0)
1012 return GSS_S_CONTINUE_NEEDED;
1014 GSSEAP_KRB_INIT(&krbContext);
1016 KRB_DATA_INIT(&data);
1018 gssBufferToKrbData(&chanBindings->application_data, &data);
1020 code = krb5_c_make_checksum(krbContext, ctx->checksumType,
1022 KEY_USAGE_GSSEAP_CHBIND_MIC,
1026 return GSS_S_FAILURE;
1029 cksumBuffer.length = KRB_CHECKSUM_LENGTH(&cksum);
1030 cksumBuffer.value = KRB_CHECKSUM_DATA(&cksum);
1032 major = duplicateBuffer(minor, &cksumBuffer, outputToken);
1033 if (GSS_ERROR(major)) {
1034 krb5_free_checksum_contents(krbContext, &cksum);
1039 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1041 krb5_free_checksum_contents(krbContext, &cksum);
1043 return GSS_S_CONTINUE_NEEDED;
1047 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
1048 gss_cred_id_t cred GSSEAP_UNUSED,
1050 gss_name_t target GSSEAP_UNUSED,
1051 gss_OID mech GSSEAP_UNUSED,
1052 OM_uint32 reqFlags GSSEAP_UNUSED,
1053 OM_uint32 timeReq GSSEAP_UNUSED,
1054 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1055 gss_buffer_t inputToken GSSEAP_UNUSED,
1056 gss_buffer_t outputToken,
1061 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
1062 if (GSS_ERROR(major))
1065 GSSEAP_SM_TRANSITION_NEXT(ctx);
1068 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1070 return GSS_S_CONTINUE_NEEDED;
1073 #ifdef GSSEAP_ENABLE_REAUTH
1075 eapGssSmInitReauthCreds(OM_uint32 *minor,
1078 gss_name_t target GSSEAP_UNUSED,
1079 gss_OID mech GSSEAP_UNUSED,
1080 OM_uint32 reqFlags GSSEAP_UNUSED,
1081 OM_uint32 timeReq GSSEAP_UNUSED,
1082 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1083 gss_buffer_t inputToken,
1084 gss_buffer_t outputToken GSSEAP_UNUSED,
1085 OM_uint32 *smFlags GSSEAP_UNUSED)
1089 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
1090 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
1091 if (GSS_ERROR(major))
1096 return GSS_S_CONTINUE_NEEDED;
1098 #endif /* GSSEAP_ENABLE_REAUTH */
1101 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
1102 gss_cred_id_t cred GSSEAP_UNUSED,
1104 gss_name_t target GSSEAP_UNUSED,
1105 gss_OID mech GSSEAP_UNUSED,
1106 OM_uint32 reqFlags GSSEAP_UNUSED,
1107 OM_uint32 timeReq GSSEAP_UNUSED,
1108 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1109 gss_buffer_t inputToken,
1110 gss_buffer_t outputToken GSSEAP_UNUSED,
1111 OM_uint32 *smFlags GSSEAP_UNUSED)
1115 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
1116 if (GSS_ERROR(major))
1119 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1123 return GSS_S_COMPLETE;
1126 static struct gss_eap_sm eapGssInitiatorSm[] = {
1128 ITOK_TYPE_CONTEXT_ERR,
1130 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
1135 ITOK_TYPE_ACCEPTOR_NAME_RESP,
1136 ITOK_TYPE_ACCEPTOR_NAME_REQ,
1137 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE |
1138 GSSEAP_STATE_ACCEPTOR_EXTS,
1140 eapGssSmInitAcceptorName
1145 ITOK_TYPE_VENDOR_INFO,
1146 GSSEAP_STATE_INITIAL,
1148 eapGssSmInitVendorInfo
1151 #ifdef GSSEAP_ENABLE_REAUTH
1153 ITOK_TYPE_REAUTH_RESP,
1154 ITOK_TYPE_REAUTH_REQ,
1155 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
1157 eapGssSmInitGssReauth
1163 #ifdef GSSEAP_ENABLE_REAUTH
1164 GSSEAP_STATE_REAUTHENTICATE |
1166 GSSEAP_STATE_INITIAL,
1167 SM_ITOK_FLAG_REQUIRED,
1168 eapGssSmInitIdentity
1173 GSSEAP_STATE_AUTHENTICATE,
1174 SM_ITOK_FLAG_REQUIRED,
1175 eapGssSmInitAuthenticate
1179 ITOK_TYPE_GSS_FLAGS,
1180 GSSEAP_STATE_INITIATOR_EXTS,
1182 eapGssSmInitGssFlags
1186 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
1187 GSSEAP_STATE_INITIATOR_EXTS,
1189 eapGssSmInitGssChannelBindings
1193 ITOK_TYPE_INITIATOR_MIC,
1194 GSSEAP_STATE_INITIATOR_EXTS,
1195 SM_ITOK_FLAG_REQUIRED,
1196 eapGssSmInitInitiatorMIC
1198 #ifdef GSSEAP_ENABLE_REAUTH
1200 ITOK_TYPE_REAUTH_CREDS,
1202 GSSEAP_STATE_ACCEPTOR_EXTS,
1204 eapGssSmInitReauthCreds
1207 /* other extensions go here */
1209 ITOK_TYPE_ACCEPTOR_MIC,
1211 GSSEAP_STATE_ACCEPTOR_EXTS,
1212 SM_ITOK_FLAG_REQUIRED,
1213 eapGssSmInitAcceptorMIC
1218 gssEapInitSecContext(OM_uint32 *minor,
1221 gss_name_t target_name,
1223 OM_uint32 req_flags,
1225 gss_channel_bindings_t input_chan_bindings,
1226 gss_buffer_t input_token,
1227 gss_OID *actual_mech_type,
1228 gss_buffer_t output_token,
1229 OM_uint32 *ret_flags,
1230 OM_uint32 *time_rec)
1232 OM_uint32 major, tmpMinor;
1233 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1236 * XXX is acquiring the credential lock here necessary? The password is
1237 * mutable but the contract could specify that this is not updated whilst
1238 * a context is being initialized.
1240 if (cred != GSS_C_NO_CREDENTIAL)
1241 GSSEAP_MUTEX_LOCK(&cred->mutex);
1243 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1244 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1245 if (GSS_ERROR(major))
1248 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1251 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1253 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1254 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1256 if (initialContextToken) {
1257 major = initBegin(minor, ctx, target_name, mech_type,
1258 req_flags, time_req, input_chan_bindings);
1259 if (GSS_ERROR(major))
1263 major = gssEapSmStep(minor,
1270 input_chan_bindings,
1274 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1275 if (GSS_ERROR(major))
1278 if (actual_mech_type != NULL) {
1281 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1282 if (GSS_ERROR(tmpMajor)) {
1289 if (ret_flags != NULL)
1290 *ret_flags = ctx->gssFlags;
1292 if (time_rec != NULL)
1293 gssEapContextTime(&tmpMinor, ctx, time_rec);
1295 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1298 if (cred != GSS_C_NO_CREDENTIAL)
1299 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1300 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1301 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1306 OM_uint32 GSSAPI_CALLCONV
1307 gss_init_sec_context(OM_uint32 *minor,
1309 gss_ctx_id_t *context_handle,
1310 gss_name_t target_name,
1312 OM_uint32 req_flags,
1314 gss_channel_bindings_t input_chan_bindings,
1315 gss_buffer_t input_token,
1316 gss_OID *actual_mech_type,
1317 gss_buffer_t output_token,
1318 OM_uint32 *ret_flags,
1319 OM_uint32 *time_rec)
1321 OM_uint32 major, tmpMinor;
1322 gss_ctx_id_t ctx = *context_handle;
1326 output_token->length = 0;
1327 output_token->value = NULL;
1329 if (ctx == GSS_C_NO_CONTEXT) {
1330 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1331 *minor = GSSEAP_WRONG_SIZE;
1332 return GSS_S_DEFECTIVE_TOKEN;
1335 major = gssEapAllocContext(minor, &ctx);
1336 if (GSS_ERROR(major))
1339 ctx->flags |= CTX_FLAG_INITIATOR;
1341 *context_handle = ctx;
1344 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1346 major = gssEapInitSecContext(minor,
1353 input_chan_bindings,
1360 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1362 if (GSS_ERROR(major))
1363 gssEapReleaseContext(&tmpMinor, context_handle);
1365 gssEapTraceStatus( "gss_init_sec_context", major, *minor);