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;
201 static u8 componentToAttrMap[] =
203 128, /* GSS-Acceptor-Service-Name */
204 129, /* GSS-Acceptor-Host-Name */
205 130 /* GSS-Acceptor-Service-specific */
207 #define CHBIND_REALM_FLAG (1 << sizeof(componentToAttrMap))
210 peerInitEapChannelBinding(OM_uint32 *minor, gss_ctx_id_t ctx)
213 radius_vendor_attr vendor_attr;
214 int component, components = 0;
215 unsigned int requested = 0;
216 krb5_principal princ;
217 /* must have acceptor name, but already checked in
218 * eapGssSmInitAcceptorName(), so maybe redunadant
219 * to do so here as well? */
220 if (!ctx->acceptorName) {
221 *minor = GSSEAP_NO_ACCEPTOR_NAME;
222 return GSS_S_BAD_NAME;
225 princ = ctx->acceptorName->krbPrincipal;
226 if (KRB_PRINC_LENGTH(princ) > sizeof(componentToAttrMap)) {
227 *minor = GSSEAP_BAD_ACCEPTOR_NAME;
228 return GSS_S_BAD_NAME;
231 /* allocate a buffer to hold channel binding data to be used by libeap */
232 buf = wpabuf_alloc(256);
235 return GSS_S_FAILURE;
238 for (component=0; component < KRB_PRINC_LENGTH(princ); component++)
240 krb5_data* name_data = KRB_PRINC_COMPONENT(princ, component);
241 if (name_data->length > 0)
244 vendor_attr = radius_vendor_attr_start(buf, VENDORPEC_UKERNA);
245 vendor_attr = radius_vendor_attr_add_subtype(vendor_attr,
246 componentToAttrMap[component],
247 (unsigned char *) name_data->data,
249 requested |= 1<<component;
250 vendor_attr = radius_vendor_attr_finish(vendor_attr);
254 if (KRB_PRINC_REALM(princ) && (KRB_PRINC_REALM(princ)->length > 0)) {
256 requested |= CHBIND_REALM_FLAG;
257 vendor_attr = radius_vendor_attr_start(buf, VENDORPEC_UKERNA);
258 vendor_attr = radius_vendor_attr_add_subtype(vendor_attr, 131,
259 (unsigned char *) KRB_PRINC_REALM(princ)->data,
260 KRB_PRINC_REALM(princ)->length);
261 vendor_attr = radius_vendor_attr_finish(vendor_attr);
264 if ((components==0) || (vendor_attr == VENDOR_ATTR_INVALID)) {
266 *minor = GSSEAP_BAD_ACCEPTOR_NAME;
267 return GSS_S_BAD_NAME;
269 /* @TODO: realloc buf to actual size? */
270 ctx->initiatorCtx.chbindData = buf;
271 ctx->initiatorCtx.chbindReqFlags = requested;
272 return GSS_S_COMPLETE;
276 peerProcessChbindResponse(void *context, int code, int nsid,
277 u8 *data, size_t len)
279 radius_parser msg, vendor_specific;
280 gss_ctx_id_t ctx = (gss_ctx_id_t )context;
288 if (nsid != CHBIND_NSID_RADIUS)
290 msg = radius_parser_start(data, len);
293 while (radius_parser_parse_tlv(msg, &type, &vendor_id, &vsadata,
294 &vsadata_len) == 0) {
299 if ((type != RADIUS_ATTR_VENDOR_SPECIFIC) ||
300 (vendor_id != VENDORPEC_UKERNA))
302 vendor_specific = radius_parser_start(vsadata, vsadata_len);
303 if (!vendor_specific)
305 while (radius_parser_parse_vendor_specific(vendor_specific,
309 if (vendor_type == 131) {
310 accepted |= CHBIND_REALM_FLAG;
312 for (i=0; i<sizeof(componentToAttrMap); i++) {
313 if (componentToAttrMap[i]==vendor_type) {
320 radius_parser_finish(vendor_specific);
322 radius_parser_finish(msg);
323 if ((code == CHBIND_CODE_SUCCESS) &&
324 (accepted == ctx->initiatorCtx.chbindReqFlags)) {
325 ctx->flags |= CTX_FLAG_EAP_CHBIND_ACCEPT;
333 peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
336 krb5_context krbContext;
337 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
338 gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
339 gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
340 gss_cred_id_t cred = ctx->cred;
342 eapPeerConfig->identity = NULL;
343 eapPeerConfig->identity_len = 0;
344 eapPeerConfig->anonymous_identity = NULL;
345 eapPeerConfig->anonymous_identity_len = 0;
346 eapPeerConfig->password = NULL;
347 eapPeerConfig->password_len = 0;
349 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
351 GSSEAP_KRB_INIT(&krbContext);
353 eapPeerConfig->fragment_size = 1024;
358 GSSEAP_ASSERT(cred->name != GSS_C_NO_NAME);
360 if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
361 *minor = GSSEAP_BAD_INITIATOR_NAME;
362 return GSS_S_BAD_NAME;
366 major = gssEapDisplayName(minor, cred->name, &identity, NULL);
367 if (GSS_ERROR(major))
370 eapPeerConfig->identity = (unsigned char *)identity.value;
371 eapPeerConfig->identity_len = identity.length;
373 krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
375 /* anonymous_identity */
376 eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
377 if (eapPeerConfig->anonymous_identity == NULL) {
379 return GSS_S_FAILURE;
382 eapPeerConfig->anonymous_identity[0] = '@';
383 memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
384 eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
385 eapPeerConfig->anonymous_identity_len = 1 + realm.length;
388 eapPeerConfig->password = (unsigned char *)cred->password.value;
389 eapPeerConfig->password_len = cred->password.length;
392 eapPeerConfig->ca_cert = (unsigned char *)cred->caCertificate.value;
393 eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
394 eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
396 /* eap channel binding */
397 if (ctx->initiatorCtx.chbindData)
399 struct eap_peer_chbind_config *chbind_config =
400 (struct eap_peer_chbind_config *)
401 GSSEAP_MALLOC(sizeof(struct eap_peer_chbind_config));
402 if (chbind_config == NULL) {
404 return GSS_S_FAILURE;
407 chbind_config->req_data = wpabuf_mhead_u8(ctx->initiatorCtx.chbindData);
408 chbind_config->req_data_len = wpabuf_len(ctx->initiatorCtx.chbindData);
409 chbind_config->nsid = CHBIND_NSID_RADIUS;
410 chbind_config->response_cb = &peerProcessChbindResponse;
411 chbind_config->ctx = ctx;
412 eapPeerConfig->chbind_config = chbind_config;
413 eapPeerConfig->chbind_config_len = 1;
415 eapPeerConfig->chbind_config = NULL;
416 eapPeerConfig->chbind_config_len = 0;
419 return GSS_S_COMPLETE;
423 peerConfigFree(OM_uint32 *minor,
426 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
428 if (eapPeerConfig->identity != NULL) {
429 GSSEAP_FREE(eapPeerConfig->identity);
430 eapPeerConfig->identity = NULL;
431 eapPeerConfig->identity_len = 0;
434 if (eapPeerConfig->anonymous_identity != NULL) {
435 GSSEAP_FREE(eapPeerConfig->anonymous_identity);
436 eapPeerConfig->anonymous_identity = NULL;
437 eapPeerConfig->anonymous_identity_len = 0;
441 return GSS_S_COMPLETE;
445 * Mark an initiator context as ready for cryptographic operations
448 initReady(OM_uint32 *minor, gss_ctx_id_t ctx, OM_uint32 reqFlags)
451 const unsigned char *key;
455 /* XXX actually check for mutual auth */
456 if (reqFlags & GSS_C_MUTUAL_FLAG)
457 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
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 &&
722 ctx->acceptorName == GSS_C_NO_NAME) {
723 /* Accept target name hint from acceptor */
724 major = gssEapImportName(minor, inputToken,
728 if (GSS_ERROR(major))
733 * Currently, other parts of the code assume that the acceptor name
734 * is available, hence this check.
736 if (ctx->acceptorName == GSS_C_NO_NAME) {
737 *minor = GSSEAP_NO_ACCEPTOR_NAME;
738 return GSS_S_FAILURE;
742 * Generate channel binding data
744 if (ctx->initiatorCtx.chbindData == NULL)
746 major = peerInitEapChannelBinding(minor, ctx);
747 if (GSS_ERROR(major))
751 return GSS_S_CONTINUE_NEEDED;
755 eapGssSmInitIdentity(OM_uint32 *minor,
756 gss_cred_id_t cred GSSEAP_UNUSED,
758 gss_name_t target GSSEAP_UNUSED,
759 gss_OID mech GSSEAP_UNUSED,
760 OM_uint32 reqFlags GSSEAP_UNUSED,
761 OM_uint32 timeReq GSSEAP_UNUSED,
762 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
763 gss_buffer_t inputToken GSSEAP_UNUSED,
764 gss_buffer_t outputToken GSSEAP_UNUSED,
767 struct eap_config eapConfig;
769 #ifdef GSSEAP_ENABLE_REAUTH
770 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
773 /* server didn't support reauthentication, sent EAP request */
774 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
775 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
776 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
779 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
781 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
782 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
784 memset(&eapConfig, 0, sizeof(eapConfig));
786 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
787 &gssEapPolicyCallbacks,
790 if (ctx->initiatorCtx.eap == NULL) {
791 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
792 return GSS_S_FAILURE;
795 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
797 /* poke EAP state machine */
798 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
799 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
800 return GSS_S_FAILURE;
803 GSSEAP_SM_TRANSITION_NEXT(ctx);
807 return GSS_S_CONTINUE_NEEDED;
811 eapGssSmInitAuthenticate(OM_uint32 *minor,
812 gss_cred_id_t cred GSSEAP_UNUSED,
814 gss_name_t target GSSEAP_UNUSED,
815 gss_OID mech GSSEAP_UNUSED,
816 OM_uint32 reqFlags GSSEAP_UNUSED,
817 OM_uint32 timeReq GSSEAP_UNUSED,
818 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
819 gss_buffer_t inputToken GSSEAP_UNUSED,
820 gss_buffer_t outputToken,
825 struct wpabuf *resp = NULL;
829 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
831 major = peerConfigInit(minor, ctx);
832 if (GSS_ERROR(major))
835 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
836 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
838 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
840 wpabuf_set(&ctx->initiatorCtx.reqData,
841 inputToken->value, inputToken->length);
843 major = GSS_S_CONTINUE_NEEDED;
845 eap_peer_sm_step(ctx->initiatorCtx.eap);
846 if (ctx->flags & CTX_FLAG_EAP_RESP) {
847 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
849 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
850 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
851 major = initReady(minor, ctx, reqFlags);
852 if (GSS_ERROR(major))
855 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
856 major = GSS_S_CONTINUE_NEEDED;
857 GSSEAP_SM_TRANSITION_NEXT(ctx);
858 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
859 major = GSS_S_DEFECTIVE_CREDENTIAL;
860 *minor = GSSEAP_PEER_AUTH_FAILURE;
862 major = GSS_S_DEFECTIVE_TOKEN;
863 *minor = GSSEAP_PEER_BAD_MESSAGE;
869 gss_buffer_desc respBuf;
871 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
873 respBuf.length = wpabuf_len(resp);
874 respBuf.value = (void *)wpabuf_head(resp);
876 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
877 if (GSS_ERROR(tmpMajor)) {
882 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
885 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
886 peerConfigFree(&tmpMinor, ctx);
892 eapGssSmInitGssFlags(OM_uint32 *minor,
893 gss_cred_id_t cred GSSEAP_UNUSED,
895 gss_name_t target GSSEAP_UNUSED,
896 gss_OID mech GSSEAP_UNUSED,
897 OM_uint32 reqFlags GSSEAP_UNUSED,
898 OM_uint32 timeReq GSSEAP_UNUSED,
899 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
900 gss_buffer_t inputToken GSSEAP_UNUSED,
901 gss_buffer_t outputToken,
902 OM_uint32 *smFlags GSSEAP_UNUSED)
904 unsigned char wireFlags[4];
905 gss_buffer_desc flagsBuf;
907 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
909 flagsBuf.length = sizeof(wireFlags);
910 flagsBuf.value = wireFlags;
912 return duplicateBuffer(minor, &flagsBuf, outputToken);
916 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
917 gss_cred_id_t cred GSSEAP_UNUSED,
919 gss_name_t target GSSEAP_UNUSED,
920 gss_OID mech GSSEAP_UNUSED,
921 OM_uint32 reqFlags GSSEAP_UNUSED,
922 OM_uint32 timeReq GSSEAP_UNUSED,
923 gss_channel_bindings_t chanBindings,
924 gss_buffer_t inputToken GSSEAP_UNUSED,
925 gss_buffer_t outputToken,
929 gss_buffer_desc buffer = GSS_C_EMPTY_BUFFER;
931 if (chanBindings != GSS_C_NO_CHANNEL_BINDINGS)
932 buffer = chanBindings->application_data;
934 major = gssEapWrap(minor, ctx, TRUE, GSS_C_QOP_DEFAULT,
935 &buffer, NULL, outputToken);
936 if (GSS_ERROR(major))
939 GSSEAP_ASSERT(outputToken->value != NULL);
942 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
944 return GSS_S_CONTINUE_NEEDED;
948 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
949 gss_cred_id_t cred GSSEAP_UNUSED,
951 gss_name_t target GSSEAP_UNUSED,
952 gss_OID mech GSSEAP_UNUSED,
953 OM_uint32 reqFlags GSSEAP_UNUSED,
954 OM_uint32 timeReq GSSEAP_UNUSED,
955 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
956 gss_buffer_t inputToken GSSEAP_UNUSED,
957 gss_buffer_t outputToken,
962 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
963 if (GSS_ERROR(major))
966 GSSEAP_SM_TRANSITION_NEXT(ctx);
969 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
971 return GSS_S_CONTINUE_NEEDED;
974 #ifdef GSSEAP_ENABLE_REAUTH
976 eapGssSmInitReauthCreds(OM_uint32 *minor,
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 GSSEAP_UNUSED,
984 gss_buffer_t inputToken,
985 gss_buffer_t outputToken GSSEAP_UNUSED,
986 OM_uint32 *smFlags GSSEAP_UNUSED)
990 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
991 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
992 if (GSS_ERROR(major))
997 return GSS_S_CONTINUE_NEEDED;
999 #endif /* GSSEAP_ENABLE_REAUTH */
1002 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
1003 gss_cred_id_t cred GSSEAP_UNUSED,
1005 gss_name_t target GSSEAP_UNUSED,
1006 gss_OID mech GSSEAP_UNUSED,
1007 OM_uint32 reqFlags GSSEAP_UNUSED,
1008 OM_uint32 timeReq GSSEAP_UNUSED,
1009 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1010 gss_buffer_t inputToken,
1011 gss_buffer_t outputToken GSSEAP_UNUSED,
1012 OM_uint32 *smFlags GSSEAP_UNUSED)
1016 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
1017 if (GSS_ERROR(major))
1020 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1024 return GSS_S_COMPLETE;
1027 static struct gss_eap_sm eapGssInitiatorSm[] = {
1029 ITOK_TYPE_CONTEXT_ERR,
1031 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
1036 ITOK_TYPE_ACCEPTOR_NAME_RESP,
1037 ITOK_TYPE_ACCEPTOR_NAME_REQ,
1038 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE,
1040 eapGssSmInitAcceptorName
1045 ITOK_TYPE_VENDOR_INFO,
1046 GSSEAP_STATE_INITIAL,
1048 eapGssSmInitVendorInfo
1051 #ifdef GSSEAP_ENABLE_REAUTH
1053 ITOK_TYPE_REAUTH_RESP,
1054 ITOK_TYPE_REAUTH_REQ,
1055 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
1057 eapGssSmInitGssReauth
1063 #ifdef GSSEAP_ENABLE_REAUTH
1064 GSSEAP_STATE_REAUTHENTICATE |
1066 GSSEAP_STATE_INITIAL,
1067 SM_ITOK_FLAG_REQUIRED,
1068 eapGssSmInitIdentity
1073 GSSEAP_STATE_AUTHENTICATE,
1074 SM_ITOK_FLAG_REQUIRED,
1075 eapGssSmInitAuthenticate
1079 ITOK_TYPE_GSS_FLAGS,
1080 GSSEAP_STATE_INITIATOR_EXTS,
1082 eapGssSmInitGssFlags
1086 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
1087 GSSEAP_STATE_INITIATOR_EXTS,
1088 SM_ITOK_FLAG_REQUIRED,
1089 eapGssSmInitGssChannelBindings
1093 ITOK_TYPE_INITIATOR_MIC,
1094 GSSEAP_STATE_INITIATOR_EXTS,
1095 SM_ITOK_FLAG_REQUIRED,
1096 eapGssSmInitInitiatorMIC
1098 #ifdef GSSEAP_ENABLE_REAUTH
1100 ITOK_TYPE_REAUTH_CREDS,
1102 GSSEAP_STATE_ACCEPTOR_EXTS,
1104 eapGssSmInitReauthCreds
1107 /* other extensions go here */
1109 ITOK_TYPE_ACCEPTOR_MIC,
1111 GSSEAP_STATE_ACCEPTOR_EXTS,
1112 SM_ITOK_FLAG_REQUIRED,
1113 eapGssSmInitAcceptorMIC
1118 gssEapInitSecContext(OM_uint32 *minor,
1121 gss_name_t target_name,
1123 OM_uint32 req_flags,
1125 gss_channel_bindings_t input_chan_bindings,
1126 gss_buffer_t input_token,
1127 gss_OID *actual_mech_type,
1128 gss_buffer_t output_token,
1129 OM_uint32 *ret_flags,
1130 OM_uint32 *time_rec)
1132 OM_uint32 major, tmpMinor;
1133 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1136 * XXX is acquiring the credential lock here necessary? The password is
1137 * mutable but the contract could specify that this is not updated whilst
1138 * a context is being initialized.
1140 if (cred != GSS_C_NO_CREDENTIAL)
1141 GSSEAP_MUTEX_LOCK(&cred->mutex);
1143 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1144 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1145 if (GSS_ERROR(major))
1148 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1151 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1153 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1154 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1156 if (initialContextToken) {
1157 major = initBegin(minor, ctx, target_name, mech_type,
1158 req_flags, time_req, input_chan_bindings);
1159 if (GSS_ERROR(major))
1163 major = gssEapSmStep(minor,
1170 input_chan_bindings,
1174 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1175 if (GSS_ERROR(major))
1178 if (actual_mech_type != NULL) {
1181 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1182 if (GSS_ERROR(tmpMajor)) {
1188 if (ret_flags != NULL) {
1189 if ((major == GSS_S_COMPLETE) &&
1190 (ctx->flags & CTX_FLAG_EAP_CHBIND_ACCEPT))
1191 *ret_flags = ctx->gssFlags | GSS_C_MUTUAL_FLAG;
1193 *ret_flags = ctx->gssFlags & (~GSS_C_MUTUAL_FLAG);
1195 if (major == GSS_S_COMPLETE)
1197 if (time_rec != NULL)
1198 gssEapContextTime(&tmpMinor, ctx, time_rec);
1200 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1203 if (cred != GSS_C_NO_CREDENTIAL)
1204 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1205 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1206 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1211 OM_uint32 GSSAPI_CALLCONV
1212 gss_init_sec_context(OM_uint32 *minor,
1214 gss_ctx_id_t *context_handle,
1215 gss_name_t target_name,
1217 OM_uint32 req_flags,
1219 gss_channel_bindings_t input_chan_bindings,
1220 gss_buffer_t input_token,
1221 gss_OID *actual_mech_type,
1222 gss_buffer_t output_token,
1223 OM_uint32 *ret_flags,
1224 OM_uint32 *time_rec)
1226 OM_uint32 major, tmpMinor;
1227 gss_ctx_id_t ctx = *context_handle;
1231 output_token->length = 0;
1232 output_token->value = NULL;
1234 if (ctx == GSS_C_NO_CONTEXT) {
1235 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1236 *minor = GSSEAP_WRONG_SIZE;
1237 return GSS_S_DEFECTIVE_TOKEN;
1240 major = gssEapAllocContext(minor, &ctx);
1241 if (GSS_ERROR(major))
1244 ctx->flags |= CTX_FLAG_INITIATOR;
1246 *context_handle = ctx;
1249 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1251 major = gssEapInitSecContext(minor,
1258 input_chan_bindings,
1265 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1267 if (GSS_ERROR(major))
1268 gssEapReleaseContext(&tmpMinor, context_handle);