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 acceptor (server). These functions
35 * wrap around libradsec and (thus) talk to a RADIUS server or proxy.
38 #include "gssapiP_eap.h"
39 #ifdef GSSEAP_ENABLE_ACCEPTOR
40 #ifdef GSSEAP_ENABLE_REAUTH
42 eapGssSmAcceptGssReauth(OM_uint32 *minor,
49 gss_channel_bindings_t chanBindings,
50 gss_buffer_t inputToken,
51 gss_buffer_t outputToken,
56 * Mark an acceptor context as ready for cryptographic operations
59 acceptReadyEap(OM_uint32 *minor, gss_ctx_id_t ctx, gss_cred_id_t cred)
61 OM_uint32 major, tmpMinor;
63 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
65 /* Cache encryption type derived from selected mechanism OID */
66 major = gssEapOidToEnctype(minor, ctx->mechanismUsed,
67 &ctx->encryptionType);
71 gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
73 major = gssEapRadiusGetRawAvp(minor, ctx->acceptorCtx.vps,
74 PW_USER_NAME, 0, &vp);
75 if (major == GSS_S_COMPLETE && vp->length) {
76 nameBuf.length = vp->length;
77 nameBuf.value = vp->vp_strvalue;
79 ctx->gssFlags |= GSS_C_ANON_FLAG;
82 major = gssEapImportName(minor, &nameBuf,
83 (ctx->gssFlags & GSS_C_ANON_FLAG) ?
84 GSS_C_NT_ANONYMOUS : GSS_C_NT_USER_NAME,
90 major = gssEapRadiusGetRawAvp(minor, ctx->acceptorCtx.vps,
91 PW_MS_MPPE_SEND_KEY, VENDORPEC_MS, &vp);
92 if (GSS_ERROR(major)) {
93 *minor = GSSEAP_KEY_UNAVAILABLE;
94 return GSS_S_UNAVAILABLE;
97 major = gssEapDeriveRfc3961Key(minor,
102 if (GSS_ERROR(major))
105 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
107 if (GSS_ERROR(major))
110 major = sequenceInit(minor,
111 &ctx->seqState, ctx->recvSeq,
112 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
113 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
115 if (GSS_ERROR(major))
118 major = gssEapCreateAttrContext(minor, cred, ctx,
119 &ctx->initiatorName->attrCtx,
121 if (GSS_ERROR(major))
124 if (ctx->expiryTime != 0 && ctx->expiryTime < time(NULL)) {
125 *minor = GSSEAP_CRED_EXPIRED;
126 return GSS_S_CREDENTIALS_EXPIRED;
130 return GSS_S_COMPLETE;
134 eapGssSmAcceptAcceptorName(OM_uint32 *minor,
135 gss_cred_id_t cred GSSEAP_UNUSED,
137 gss_name_t target GSSEAP_UNUSED,
138 gss_OID mech GSSEAP_UNUSED,
139 OM_uint32 reqFlags GSSEAP_UNUSED,
140 OM_uint32 timeReq GSSEAP_UNUSED,
141 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
142 gss_buffer_t inputToken GSSEAP_UNUSED,
143 gss_buffer_t outputToken,
144 OM_uint32 *smFlags GSSEAP_UNUSED)
148 /* XXX TODO import and validate name from inputToken */
150 if (ctx->acceptorName != GSS_C_NO_NAME) {
151 /* Send desired target name to acceptor */
152 major = gssEapDisplayName(minor, ctx->acceptorName,
154 if (GSS_ERROR(major))
158 return GSS_S_CONTINUE_NEEDED;
163 eapGssSmAcceptVendorInfo(OM_uint32 *minor,
164 gss_cred_id_t cred GSSEAP_UNUSED,
165 gss_ctx_id_t ctx GSSEAP_UNUSED,
166 gss_name_t target GSSEAP_UNUSED,
167 gss_OID mech GSSEAP_UNUSED,
168 OM_uint32 reqFlags GSSEAP_UNUSED,
169 OM_uint32 timeReq GSSEAP_UNUSED,
170 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
171 gss_buffer_t inputToken,
172 gss_buffer_t outputToken GSSEAP_UNUSED,
173 OM_uint32 *smFlags GSSEAP_UNUSED)
175 fprintf(stderr, "GSS-EAP: vendor: %.*s\n",
176 (int)inputToken->length, (char *)inputToken->value);
179 return GSS_S_CONTINUE_NEEDED;
185 * Emit a identity EAP request to force the initiator (peer) to identify
189 eapGssSmAcceptIdentity(OM_uint32 *minor,
192 gss_name_t target GSSEAP_UNUSED,
193 gss_OID mech GSSEAP_UNUSED,
194 OM_uint32 reqFlags GSSEAP_UNUSED,
195 OM_uint32 timeReq GSSEAP_UNUSED,
196 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
197 gss_buffer_t inputToken,
198 gss_buffer_t outputToken,
202 struct wpabuf *reqData;
203 gss_buffer_desc pktBuffer;
205 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
206 *minor = GSSEAP_CRED_MECH_MISMATCH;
207 return GSS_S_BAD_MECH;
210 if (inputToken != GSS_C_NO_BUFFER && inputToken->length != 0) {
211 *minor = GSSEAP_WRONG_SIZE;
212 return GSS_S_DEFECTIVE_TOKEN;
215 reqData = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY, 0,
216 EAP_CODE_REQUEST, 0);
217 if (reqData == NULL) {
219 return GSS_S_FAILURE;
222 pktBuffer.length = wpabuf_len(reqData);
223 pktBuffer.value = (void *)wpabuf_head(reqData);
225 major = duplicateBuffer(minor, &pktBuffer, outputToken);
226 if (GSS_ERROR(major))
229 wpabuf_free(reqData);
231 GSSEAP_SM_TRANSITION_NEXT(ctx);
234 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
236 return GSS_S_CONTINUE_NEEDED;
240 * Returns TRUE if the input token contains an EAP identity response.
243 isIdentityResponseP(gss_buffer_t inputToken)
245 struct wpabuf respData;
247 wpabuf_set(&respData, inputToken->value, inputToken->length);
249 return (eap_get_type(&respData) == EAP_TYPE_IDENTITY);
253 * Save the asserted initiator identity from the EAP identity response.
256 importInitiatorIdentity(OM_uint32 *minor,
258 gss_buffer_t inputToken)
261 struct wpabuf respData;
262 const unsigned char *pos;
264 gss_buffer_desc nameBuf;
266 wpabuf_set(&respData, inputToken->value, inputToken->length);
268 pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
271 *minor = GSSEAP_PEER_BAD_MESSAGE;
272 return GSS_S_DEFECTIVE_TOKEN;
275 nameBuf.value = (void *)pos;
276 nameBuf.length = len;
278 gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
280 return gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
281 ctx->mechanismUsed, &ctx->initiatorName);
285 * Pass the asserted initiator identity to the authentication server.
288 setInitiatorIdentity(OM_uint32 *minor,
292 OM_uint32 major, tmpMinor;
293 gss_buffer_desc nameBuf;
296 * We should have got an EAP identity response, but if we didn't, then
297 * we will just avoid sending User-Name. Note that radsecproxy requires
298 * User-Name to be sent on every request (presumably so it can remain
301 if (ctx->initiatorName != GSS_C_NO_NAME) {
302 major = gssEapDisplayName(minor, ctx->initiatorName, &nameBuf, NULL);
303 if (GSS_ERROR(major))
306 major = gssEapRadiusAddAvp(minor, vps, PW_USER_NAME, 0, &nameBuf);
307 if (GSS_ERROR(major))
310 gss_release_buffer(&tmpMinor, &nameBuf);
314 return GSS_S_COMPLETE;
318 * Pass the asserted acceptor identity to the authentication server.
321 setAcceptorIdentity(OM_uint32 *minor,
326 gss_buffer_desc nameBuf;
327 krb5_context krbContext = NULL;
328 krb5_principal krbPrinc;
329 struct rs_context *rc = ctx->acceptorCtx.radContext;
333 if (ctx->acceptorName == GSS_C_NO_NAME) {
335 return GSS_S_COMPLETE;
338 if ((ctx->acceptorName->flags & NAME_FLAG_SERVICE) == 0) {
339 *minor = GSSEAP_BAD_SERVICE_NAME;
340 return GSS_S_BAD_NAME;
343 GSSEAP_KRB_INIT(&krbContext);
345 krbPrinc = ctx->acceptorName->krbPrincipal;
346 assert(krbPrinc != NULL);
347 assert(KRB_PRINC_LENGTH(krbPrinc) >= 2);
349 /* Acceptor-Service-Name */
350 krbPrincComponentToGssBuffer(krbPrinc, 0, &nameBuf);
352 major = gssEapRadiusAddAvp(minor, vps,
353 PW_GSS_ACCEPTOR_SERVICE_NAME,
356 if (GSS_ERROR(major))
359 /* Acceptor-Host-Name */
360 krbPrincComponentToGssBuffer(krbPrinc, 1, &nameBuf);
362 major = gssEapRadiusAddAvp(minor, vps,
363 PW_GSS_ACCEPTOR_HOST_NAME,
366 if (GSS_ERROR(major))
369 if (KRB_PRINC_LENGTH(krbPrinc) > 2) {
370 /* Acceptor-Service-Specific */
371 krb5_principal_data ssiPrinc = *krbPrinc;
374 KRB_PRINC_LENGTH(&ssiPrinc) -= 2;
375 KRB_PRINC_NAME(&ssiPrinc) += 2;
377 *minor = krb5_unparse_name_flags(krbContext, &ssiPrinc,
378 KRB5_PRINCIPAL_UNPARSE_NO_REALM, &ssi);
380 return GSS_S_FAILURE;
383 nameBuf.length = strlen(ssi);
385 major = gssEapRadiusAddAvp(minor, vps,
386 PW_GSS_ACCEPTOR_SERVICE_SPECIFIC,
390 if (GSS_ERROR(major)) {
391 krb5_free_unparsed_name(krbContext, ssi);
394 krb5_free_unparsed_name(krbContext, ssi);
397 krbPrincRealmToGssBuffer(krbPrinc, &nameBuf);
398 if (nameBuf.length != 0) {
399 /* Acceptor-Realm-Name */
400 major = gssEapRadiusAddAvp(minor, vps,
401 PW_GSS_ACCEPTOR_REALM_NAME,
404 if (GSS_ERROR(major))
409 return GSS_S_COMPLETE;
413 * Allocate a RadSec handle
416 createRadiusHandle(OM_uint32 *minor,
420 struct gss_eap_acceptor_ctx *actx = &ctx->acceptorCtx;
421 const char *configFile = RS_CONFIG_FILE;
422 const char *configStanza = "gss-eap";
423 struct rs_alloc_scheme ralloc;
424 struct rs_error *err;
426 assert(actx->radContext == NULL);
427 assert(actx->radConn == NULL);
429 if (rs_context_create(&actx->radContext) != 0) {
430 *minor = GSSEAP_RADSEC_CONTEXT_FAILURE;
431 return GSS_S_FAILURE;
434 if (cred->radiusConfigFile != NULL)
435 configFile = cred->radiusConfigFile;
436 if (cred->radiusConfigStanza != NULL)
437 configStanza = cred->radiusConfigStanza;
439 ralloc.calloc = GSSEAP_CALLOC;
440 ralloc.malloc = GSSEAP_MALLOC;
441 ralloc.free = GSSEAP_FREE;
442 ralloc.realloc = GSSEAP_REALLOC;
444 rs_context_set_alloc_scheme(actx->radContext, &ralloc);
446 if (rs_context_read_config(actx->radContext, configFile) != 0) {
447 err = rs_err_ctx_pop(actx->radContext);
451 if (rs_context_init_freeradius_dict(actx->radContext, NULL) != 0) {
452 err = rs_err_ctx_pop(actx->radContext);
456 if (rs_conn_create(actx->radContext, &actx->radConn, configStanza) != 0) {
457 err = rs_err_conn_pop(actx->radConn);
461 if (actx->radServer != NULL) {
462 if (rs_conn_select_peer(actx->radConn, actx->radServer) != 0) {
463 err = rs_err_conn_pop(actx->radConn);
469 return GSS_S_COMPLETE;
472 return gssEapRadiusMapError(minor, err);
476 * Process a EAP response from the initiator.
479 eapGssSmAcceptAuthenticate(OM_uint32 *minor,
482 gss_name_t target GSSEAP_UNUSED,
483 gss_OID mech GSSEAP_UNUSED,
484 OM_uint32 reqFlags GSSEAP_UNUSED,
485 OM_uint32 timeReq GSSEAP_UNUSED,
486 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
487 gss_buffer_t inputToken,
488 gss_buffer_t outputToken,
491 OM_uint32 major, tmpMinor;
492 struct rs_connection *rconn;
493 struct rs_request *request = NULL;
494 struct rs_packet *req = NULL, *resp = NULL;
495 struct radius_packet *frreq, *frresp;
497 if (ctx->acceptorCtx.radContext == NULL) {
498 /* May be NULL from an imported partial context */
499 major = createRadiusHandle(minor, cred, ctx);
500 if (GSS_ERROR(major))
504 if (isIdentityResponseP(inputToken)) {
505 major = importInitiatorIdentity(minor, ctx, inputToken);
506 if (GSS_ERROR(major))
510 rconn = ctx->acceptorCtx.radConn;
512 if (rs_packet_create_authn_request(rconn, &req, NULL, NULL) != 0) {
513 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
516 frreq = rs_packet_frpkt(req);
518 major = setInitiatorIdentity(minor, ctx, &frreq->vps);
519 if (GSS_ERROR(major))
522 major = setAcceptorIdentity(minor, ctx, &frreq->vps);
523 if (GSS_ERROR(major))
526 major = gssEapRadiusAddAvp(minor, &frreq->vps,
527 PW_EAP_MESSAGE, 0, inputToken);
528 if (GSS_ERROR(major))
531 if (ctx->acceptorCtx.state.length != 0) {
532 major = gssEapRadiusAddAvp(minor, &frreq->vps, PW_STATE, 0,
533 &ctx->acceptorCtx.state);
534 if (GSS_ERROR(major))
537 gss_release_buffer(&tmpMinor, &ctx->acceptorCtx.state);
540 if (rs_request_create(rconn, &request) != 0) {
541 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
545 rs_request_add_reqpkt(request, req);
548 if (rs_request_send(request, &resp) != 0) {
549 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
553 assert(resp != NULL);
555 frresp = rs_packet_frpkt(resp);
556 switch (frresp->code) {
557 case PW_ACCESS_CHALLENGE:
558 case PW_AUTHENTICATION_ACK:
560 case PW_AUTHENTICATION_REJECT:
561 *minor = GSSEAP_RADIUS_AUTH_FAILURE;
562 major = GSS_S_DEFECTIVE_CREDENTIAL;
566 *minor = GSSEAP_UNKNOWN_RADIUS_CODE;
567 major = GSS_S_FAILURE;
572 major = gssEapRadiusGetAvp(minor, frresp->vps, PW_EAP_MESSAGE, 0,
574 if (major == GSS_S_UNAVAILABLE && frresp->code == PW_ACCESS_CHALLENGE) {
575 *minor = GSSEAP_MISSING_EAP_REQUEST;
576 major = GSS_S_DEFECTIVE_TOKEN;
578 } else if (GSS_ERROR(major))
581 if (frresp->code == PW_ACCESS_CHALLENGE) {
582 major = gssEapRadiusGetAvp(minor, frresp->vps, PW_STATE, 0,
583 &ctx->acceptorCtx.state, TRUE);
584 if (GSS_ERROR(major) && *minor != GSSEAP_NO_SUCH_ATTR)
587 ctx->acceptorCtx.vps = frresp->vps;
590 major = acceptReadyEap(minor, ctx, cred);
591 if (GSS_ERROR(major))
594 GSSEAP_SM_TRANSITION_NEXT(ctx);
597 major = GSS_S_CONTINUE_NEEDED;
599 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
603 rs_request_destroy(request);
605 rs_packet_destroy(req);
607 rs_packet_destroy(resp);
608 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIATOR_EXTS) {
609 assert(major == GSS_S_CONTINUE_NEEDED);
611 rs_conn_destroy(ctx->acceptorCtx.radConn);
612 ctx->acceptorCtx.radConn = NULL;
619 eapGssSmAcceptGssChannelBindings(OM_uint32 *minor,
620 gss_cred_id_t cred GSSEAP_UNUSED,
622 gss_name_t target GSSEAP_UNUSED,
623 gss_OID mech GSSEAP_UNUSED,
624 OM_uint32 reqFlags GSSEAP_UNUSED,
625 OM_uint32 timeReq GSSEAP_UNUSED,
626 gss_channel_bindings_t chanBindings,
627 gss_buffer_t inputToken,
628 gss_buffer_t outputToken GSSEAP_UNUSED,
629 OM_uint32 *smFlags GSSEAP_UNUSED)
631 OM_uint32 major, tmpMinor;
632 gss_iov_buffer_desc iov[2];
634 iov[0].type = GSS_IOV_BUFFER_TYPE_DATA | GSS_IOV_BUFFER_FLAG_ALLOCATE;
635 iov[0].buffer.length = 0;
636 iov[0].buffer.value = NULL;
638 iov[1].type = GSS_IOV_BUFFER_TYPE_STREAM;
639 iov[1].buffer = *inputToken;
641 major = gssEapUnwrapOrVerifyMIC(minor, ctx, NULL, NULL,
642 iov, 2, TOK_TYPE_WRAP);
643 if (GSS_ERROR(major))
646 if (chanBindings != GSS_C_NO_CHANNEL_BINDINGS &&
647 !bufferEqual(&iov[0].buffer, &chanBindings->application_data)) {
648 major = GSS_S_BAD_BINDINGS;
649 *minor = GSSEAP_BINDINGS_MISMATCH;
651 major = GSS_S_CONTINUE_NEEDED;
655 gss_release_buffer(&tmpMinor, &iov[0].buffer);
660 #ifdef GSSEAP_ENABLE_REAUTH
662 eapGssSmAcceptReauthCreds(OM_uint32 *minor,
665 gss_name_t target GSSEAP_UNUSED,
666 gss_OID mech GSSEAP_UNUSED,
667 OM_uint32 reqFlags GSSEAP_UNUSED,
668 OM_uint32 timeReq GSSEAP_UNUSED,
669 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
670 gss_buffer_t inputToken GSSEAP_UNUSED,
671 gss_buffer_t outputToken,
672 OM_uint32 *smFlags GSSEAP_UNUSED)
677 * If we're built with fast reauthentication enabled, then
678 * fabricate a ticket from the initiator to ourselves.
680 major = gssEapMakeReauthCreds(minor, ctx, cred, outputToken);
681 if (major == GSS_S_UNAVAILABLE)
682 major = GSS_S_COMPLETE;
683 if (major == GSS_S_COMPLETE)
684 major = GSS_S_CONTINUE_NEEDED;
691 eapGssSmAcceptCompleteInitiatorExts(OM_uint32 *minor,
692 gss_cred_id_t cred GSSEAP_UNUSED,
694 gss_name_t target GSSEAP_UNUSED,
695 gss_OID mech GSSEAP_UNUSED,
696 OM_uint32 reqFlags GSSEAP_UNUSED,
697 OM_uint32 timeReq GSSEAP_UNUSED,
698 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
699 gss_buffer_t inputToken GSSEAP_UNUSED,
700 gss_buffer_t outputToken GSSEAP_UNUSED,
701 OM_uint32 *smFlags GSSEAP_UNUSED)
703 GSSEAP_SM_TRANSITION_NEXT(ctx);
707 return GSS_S_CONTINUE_NEEDED;
711 eapGssSmAcceptCompleteAcceptorExts(OM_uint32 *minor,
712 gss_cred_id_t cred GSSEAP_UNUSED,
714 gss_name_t target GSSEAP_UNUSED,
715 gss_OID mech GSSEAP_UNUSED,
716 OM_uint32 reqFlags GSSEAP_UNUSED,
717 OM_uint32 timeReq GSSEAP_UNUSED,
718 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
719 gss_buffer_t inputToken GSSEAP_UNUSED,
720 gss_buffer_t outputToken GSSEAP_UNUSED,
723 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
726 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
728 return GSS_S_COMPLETE;
731 static struct gss_eap_sm eapGssAcceptorSm[] = {
733 ITOK_TYPE_ACCEPTOR_NAME_REQ,
734 ITOK_TYPE_ACCEPTOR_NAME_RESP,
735 GSSEAP_STATE_INITIAL,
737 eapGssSmAcceptAcceptorName
741 ITOK_TYPE_VENDOR_INFO,
743 GSSEAP_STATE_INITIAL,
745 eapGssSmAcceptVendorInfo,
748 #ifdef GSSEAP_ENABLE_REAUTH
750 ITOK_TYPE_REAUTH_REQ,
751 ITOK_TYPE_REAUTH_RESP,
752 GSSEAP_STATE_INITIAL,
754 eapGssSmAcceptGssReauth,
760 GSSEAP_STATE_INITIAL,
761 SM_ITOK_FLAG_REQUIRED,
762 eapGssSmAcceptIdentity,
767 GSSEAP_STATE_AUTHENTICATE,
768 SM_ITOK_FLAG_REQUIRED,
769 eapGssSmAcceptAuthenticate
772 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
774 GSSEAP_STATE_INITIATOR_EXTS,
775 SM_ITOK_FLAG_REQUIRED,
776 eapGssSmAcceptGssChannelBindings,
781 GSSEAP_STATE_INITIATOR_EXTS,
783 eapGssSmAcceptCompleteInitiatorExts,
785 #ifdef GSSEAP_ENABLE_REAUTH
788 ITOK_TYPE_REAUTH_CREDS,
789 GSSEAP_STATE_ACCEPTOR_EXTS,
791 eapGssSmAcceptReauthCreds,
797 GSSEAP_STATE_ACCEPTOR_EXTS,
799 eapGssSmAcceptCompleteAcceptorExts
802 #endif /* GSSEAP_ENABLE_ACCEPTOR */
804 #ifdef GSSEAP_ENABLE_ACCEPTOR
805 #define ACCEPTOR_PARAM(p) p
807 #define ACCEPTOR_PARAM(p) UNUSED_PARAM(p)
810 OM_uint32 KRB5_CALLCONV
811 gss_accept_sec_context(OM_uint32 *ACCEPTOR_PARAM(minor),
812 gss_ctx_id_t *ACCEPTOR_PARAM(context_handle),
813 gss_cred_id_t ACCEPTOR_PARAM(cred),
814 gss_buffer_t ACCEPTOR_PARAM(input_token),
815 gss_channel_bindings_t ACCEPTOR_PARAM(input_chan_bindings),
816 gss_name_t *ACCEPTOR_PARAM(src_name),
817 gss_OID *ACCEPTOR_PARAM(mech_type),
818 gss_buffer_t ACCEPTOR_PARAM(output_token),
819 OM_uint32 *ACCEPTOR_PARAM(ret_flags),
820 OM_uint32 *ACCEPTOR_PARAM(time_rec),
821 gss_cred_id_t *ACCEPTOR_PARAM(delegated_cred_handle))
823 #ifdef GSSEAP_ENABLE_ACCEPTOR
824 OM_uint32 major, tmpMinor;
825 gss_ctx_id_t ctx = *context_handle;
829 output_token->length = 0;
830 output_token->value = NULL;
832 if (src_name != NULL)
833 *src_name = GSS_C_NO_NAME;
835 if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) {
836 *minor = GSSEAP_TOK_TRUNC;
837 return GSS_S_DEFECTIVE_TOKEN;
840 if (ctx == GSS_C_NO_CONTEXT) {
841 major = gssEapAllocContext(minor, &ctx);
842 if (GSS_ERROR(major))
845 *context_handle = ctx;
848 GSSEAP_MUTEX_LOCK(&ctx->mutex);
850 if (cred == GSS_C_NO_CREDENTIAL) {
851 if (ctx->defaultCred == GSS_C_NO_CREDENTIAL) {
852 major = gssEapAcquireCred(minor,
861 if (GSS_ERROR(major))
865 cred = ctx->defaultCred;
868 GSSEAP_MUTEX_LOCK(&cred->mutex);
870 if (cred->name != GSS_C_NO_NAME) {
871 major = gssEapDuplicateName(minor, cred->name, &ctx->acceptorName);
872 if (GSS_ERROR(major))
876 major = gssEapSmStep(minor,
887 sizeof(eapGssAcceptorSm) / sizeof(eapGssAcceptorSm[0]));
888 if (GSS_ERROR(major))
891 if (mech_type != NULL) {
894 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, mech_type);
895 if (GSS_ERROR(tmpMajor)) {
901 if (ret_flags != NULL)
902 *ret_flags = ctx->gssFlags;
903 if (delegated_cred_handle != NULL)
904 *delegated_cred_handle = GSS_C_NO_CREDENTIAL;
906 if (major == GSS_S_COMPLETE) {
907 if (src_name != NULL && ctx->initiatorName != GSS_C_NO_NAME) {
908 major = gssEapDuplicateName(&tmpMinor, ctx->initiatorName, src_name);
909 if (GSS_ERROR(major))
912 if (time_rec != NULL) {
913 major = gssEapContextTime(&tmpMinor, ctx, time_rec);
914 if (GSS_ERROR(major))
919 assert(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
922 if (cred != GSS_C_NO_CREDENTIAL)
923 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
924 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
926 if (GSS_ERROR(major))
927 gssEapReleaseContext(&tmpMinor, context_handle);
931 return GSS_S_UNAVAILABLE;
932 #endif /* GSSEAP_ENABLE_ACCEPTOR */
935 #ifdef GSSEAP_ENABLE_ACCEPTOR
936 #ifdef GSSEAP_ENABLE_REAUTH
938 acceptReadyKrb(OM_uint32 *minor,
941 const gss_name_t initiator,
947 major = gssEapGlueToMechName(minor, ctx, initiator, &ctx->initiatorName);
948 if (GSS_ERROR(major))
951 major = gssEapReauthComplete(minor, ctx, cred, mech, timeRec);
952 if (GSS_ERROR(major))
956 return GSS_S_COMPLETE;
960 eapGssSmAcceptGssReauth(OM_uint32 *minor,
963 gss_name_t target GSSEAP_UNUSED,
965 OM_uint32 reqFlags GSSEAP_UNUSED,
966 OM_uint32 timeReq GSSEAP_UNUSED,
967 gss_channel_bindings_t chanBindings,
968 gss_buffer_t inputToken,
969 gss_buffer_t outputToken,
972 OM_uint32 major, tmpMinor;
973 gss_name_t krbInitiator = GSS_C_NO_NAME;
974 OM_uint32 gssFlags, timeRec = GSS_C_INDEFINITE;
977 * If we're built with fast reauthentication support, it's valid
978 * for an initiator to send a GSS reauthentication token as its
979 * initial context token, causing us to short-circuit the state
980 * machine and process Kerberos GSS messages instead.
983 ctx->flags |= CTX_FLAG_KRB_REAUTH;
985 major = gssAcceptSecContext(minor,
996 if (major == GSS_S_COMPLETE) {
997 major = acceptReadyKrb(minor, ctx, cred,
998 krbInitiator, mech, timeRec);
999 if (major == GSS_S_COMPLETE) {
1000 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1002 ctx->gssFlags = gssFlags;
1003 } else if (GSS_ERROR(major) &&
1004 (*smFlags & SM_FLAG_INPUT_TOKEN_CRITICAL) == 0) {
1005 /* pretend reauthentication attempt never happened */
1006 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
1007 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
1008 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
1009 major = GSS_S_CONTINUE_NEEDED;
1012 gssReleaseName(&tmpMinor, &krbInitiator);
1016 #endif /* GSSEAP_ENABLE_REAUTH */
1017 #endif /* GSSEAP_ENABLE_ACCEPTOR */