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"
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 && rs_avp_length(vp) != 0) {
76 rs_avp_octets_value_byref((rs_avp *)vp,
77 (unsigned char **)&nameBuf.value,
80 ctx->gssFlags |= GSS_C_ANON_FLAG;
83 major = gssEapImportName(minor, &nameBuf,
84 (ctx->gssFlags & GSS_C_ANON_FLAG) ?
85 GSS_C_NT_ANONYMOUS : GSS_C_NT_USER_NAME,
91 major = gssEapRadiusGetRawAvp(minor, ctx->acceptorCtx.vps,
92 PW_MS_MPPE_SEND_KEY, VENDORPEC_MICROSOFT, &vp);
93 if (GSS_ERROR(major)) {
94 *minor = GSSEAP_KEY_UNAVAILABLE;
95 return GSS_S_UNAVAILABLE;
98 major = gssEapDeriveRfc3961Key(minor,
99 rs_avp_octets_value_const_ptr(vp),
103 if (GSS_ERROR(major))
106 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
108 if (GSS_ERROR(major))
111 major = sequenceInit(minor,
112 &ctx->seqState, ctx->recvSeq,
113 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
114 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
116 if (GSS_ERROR(major))
119 major = gssEapCreateAttrContext(minor, cred, ctx,
120 &ctx->initiatorName->attrCtx,
122 if (GSS_ERROR(major))
125 if (ctx->expiryTime != 0 && ctx->expiryTime < time(NULL)) {
126 *minor = GSSEAP_CRED_EXPIRED;
127 return GSS_S_CREDENTIALS_EXPIRED;
131 return GSS_S_COMPLETE;
135 eapGssSmAcceptAcceptorName(OM_uint32 *minor,
136 gss_cred_id_t cred GSSEAP_UNUSED,
138 gss_name_t target GSSEAP_UNUSED,
139 gss_OID mech GSSEAP_UNUSED,
140 OM_uint32 reqFlags GSSEAP_UNUSED,
141 OM_uint32 timeReq GSSEAP_UNUSED,
142 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
143 gss_buffer_t inputToken GSSEAP_UNUSED,
144 gss_buffer_t outputToken,
145 OM_uint32 *smFlags GSSEAP_UNUSED)
149 /* XXX TODO import and validate name from inputToken */
151 if (ctx->acceptorName != GSS_C_NO_NAME) {
152 /* Send desired target name to acceptor */
153 major = gssEapDisplayName(minor, ctx->acceptorName,
155 if (GSS_ERROR(major))
159 return GSS_S_CONTINUE_NEEDED;
164 eapGssSmAcceptVendorInfo(OM_uint32 *minor,
165 gss_cred_id_t cred GSSEAP_UNUSED,
166 gss_ctx_id_t ctx GSSEAP_UNUSED,
167 gss_name_t target GSSEAP_UNUSED,
168 gss_OID mech GSSEAP_UNUSED,
169 OM_uint32 reqFlags GSSEAP_UNUSED,
170 OM_uint32 timeReq GSSEAP_UNUSED,
171 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
172 gss_buffer_t inputToken,
173 gss_buffer_t outputToken GSSEAP_UNUSED,
174 OM_uint32 *smFlags GSSEAP_UNUSED)
176 fprintf(stderr, "GSS-EAP: vendor: %.*s\n",
177 (int)inputToken->length, (char *)inputToken->value);
180 return GSS_S_CONTINUE_NEEDED;
186 * Emit a identity EAP request to force the initiator (peer) to identify
190 eapGssSmAcceptIdentity(OM_uint32 *minor,
193 gss_name_t target GSSEAP_UNUSED,
194 gss_OID mech GSSEAP_UNUSED,
195 OM_uint32 reqFlags GSSEAP_UNUSED,
196 OM_uint32 timeReq GSSEAP_UNUSED,
197 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
198 gss_buffer_t inputToken,
199 gss_buffer_t outputToken,
203 struct wpabuf *reqData;
204 gss_buffer_desc pktBuffer;
206 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
207 *minor = GSSEAP_CRED_MECH_MISMATCH;
208 return GSS_S_BAD_MECH;
211 if (inputToken != GSS_C_NO_BUFFER && inputToken->length != 0) {
212 *minor = GSSEAP_WRONG_SIZE;
213 return GSS_S_DEFECTIVE_TOKEN;
216 reqData = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY, 0,
217 EAP_CODE_REQUEST, 0);
218 if (reqData == NULL) {
220 return GSS_S_FAILURE;
223 pktBuffer.length = wpabuf_len(reqData);
224 pktBuffer.value = (void *)wpabuf_head(reqData);
226 major = duplicateBuffer(minor, &pktBuffer, outputToken);
227 if (GSS_ERROR(major))
230 wpabuf_free(reqData);
232 GSSEAP_SM_TRANSITION_NEXT(ctx);
235 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
237 return GSS_S_CONTINUE_NEEDED;
241 * Returns TRUE if the input token contains an EAP identity response.
244 isIdentityResponseP(gss_buffer_t inputToken)
246 struct wpabuf respData;
248 wpabuf_set(&respData, inputToken->value, inputToken->length);
250 return (eap_get_type(&respData) == EAP_TYPE_IDENTITY);
254 * Save the asserted initiator identity from the EAP identity response.
257 importInitiatorIdentity(OM_uint32 *minor,
259 gss_buffer_t inputToken)
262 struct wpabuf respData;
263 const unsigned char *pos;
265 gss_buffer_desc nameBuf;
267 wpabuf_set(&respData, inputToken->value, inputToken->length);
269 pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
272 *minor = GSSEAP_PEER_BAD_MESSAGE;
273 return GSS_S_DEFECTIVE_TOKEN;
276 nameBuf.value = (void *)pos;
277 nameBuf.length = len;
279 gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
281 return gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
282 ctx->mechanismUsed, &ctx->initiatorName);
286 * Pass the asserted initiator identity to the authentication server.
289 setInitiatorIdentity(OM_uint32 *minor,
291 struct rs_packet *req)
293 OM_uint32 major, tmpMinor;
294 gss_buffer_desc nameBuf;
297 * We should have got an EAP identity response, but if we didn't, then
298 * we will just avoid sending User-Name. Note that radsecproxy requires
299 * User-Name to be sent on every request (presumably so it can remain
302 if (ctx->initiatorName != GSS_C_NO_NAME) {
303 major = gssEapDisplayName(minor, ctx->initiatorName, &nameBuf, NULL);
304 if (GSS_ERROR(major))
307 major = gssEapRadiusAddAvp(minor, req, PW_USER_NAME, 0, &nameBuf);
308 if (GSS_ERROR(major))
311 gss_release_buffer(&tmpMinor, &nameBuf);
315 return GSS_S_COMPLETE;
319 * Pass the asserted acceptor identity to the authentication server.
322 setAcceptorIdentity(OM_uint32 *minor,
324 struct rs_packet *req)
327 gss_buffer_desc nameBuf;
328 krb5_context krbContext = NULL;
329 krb5_principal krbPrinc;
330 struct rs_context *rc = ctx->acceptorCtx.radContext;
332 GSSEAP_ASSERT(rc != NULL);
334 if (ctx->acceptorName == GSS_C_NO_NAME) {
336 return GSS_S_COMPLETE;
339 if ((ctx->acceptorName->flags & NAME_FLAG_SERVICE) == 0) {
340 *minor = GSSEAP_BAD_SERVICE_NAME;
341 return GSS_S_BAD_NAME;
344 GSSEAP_KRB_INIT(&krbContext);
346 krbPrinc = ctx->acceptorName->krbPrincipal;
347 GSSEAP_ASSERT(krbPrinc != NULL);
348 GSSEAP_ASSERT(KRB_PRINC_LENGTH(krbPrinc) >= 2);
350 /* Acceptor-Service-Name */
351 krbPrincComponentToGssBuffer(krbPrinc, 0, &nameBuf);
353 major = gssEapRadiusAddAvp(minor, req,
354 PW_GSS_ACCEPTOR_SERVICE_NAME,
357 if (GSS_ERROR(major))
360 /* Acceptor-Host-Name */
361 krbPrincComponentToGssBuffer(krbPrinc, 1, &nameBuf);
363 major = gssEapRadiusAddAvp(minor, req,
364 PW_GSS_ACCEPTOR_HOST_NAME,
367 if (GSS_ERROR(major))
370 if (KRB_PRINC_LENGTH(krbPrinc) > 2) {
371 /* Acceptor-Service-Specific */
372 krb5_principal_data ssiPrinc = *krbPrinc;
375 KRB_PRINC_LENGTH(&ssiPrinc) -= 2;
376 KRB_PRINC_NAME(&ssiPrinc) += 2;
378 *minor = krb5_unparse_name_flags(krbContext, &ssiPrinc,
379 KRB5_PRINCIPAL_UNPARSE_NO_REALM, &ssi);
381 return GSS_S_FAILURE;
384 nameBuf.length = strlen(ssi);
386 major = gssEapRadiusAddAvp(minor, req,
387 PW_GSS_ACCEPTOR_SERVICE_SPECIFIC,
391 if (GSS_ERROR(major)) {
392 krb5_free_unparsed_name(krbContext, ssi);
395 krb5_free_unparsed_name(krbContext, ssi);
398 krbPrincRealmToGssBuffer(krbPrinc, &nameBuf);
399 if (nameBuf.length != 0) {
400 /* Acceptor-Realm-Name */
401 major = gssEapRadiusAddAvp(minor, req,
402 PW_GSS_ACCEPTOR_REALM_NAME,
405 if (GSS_ERROR(major))
410 return GSS_S_COMPLETE;
414 * Allocate a RadSec handle
417 createRadiusHandle(OM_uint32 *minor,
421 struct gss_eap_acceptor_ctx *actx = &ctx->acceptorCtx;
422 struct rs_error *err;
423 const char *configStanza = "gss-eap";
426 GSSEAP_ASSERT(actx->radContext == NULL);
427 GSSEAP_ASSERT(actx->radConn == NULL);
428 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
430 major = gssEapCreateRadiusContext(minor, cred, &actx->radContext);
431 if (GSS_ERROR(major))
434 if (cred->radiusConfigStanza.value != NULL)
435 configStanza = (const char *)cred->radiusConfigStanza.value;
437 if (rs_conn_create(actx->radContext, &actx->radConn, configStanza) != 0) {
438 err = rs_err_conn_pop(actx->radConn);
439 return gssEapRadiusMapError(minor, err);
442 if (actx->radServer != NULL) {
443 if (rs_conn_select_peer(actx->radConn, actx->radServer) != 0) {
444 err = rs_err_conn_pop(actx->radConn);
445 return gssEapRadiusMapError(minor, err);
450 return GSS_S_COMPLETE;
454 * Process a EAP response from the initiator.
457 eapGssSmAcceptAuthenticate(OM_uint32 *minor,
460 gss_name_t target GSSEAP_UNUSED,
461 gss_OID mech GSSEAP_UNUSED,
462 OM_uint32 reqFlags GSSEAP_UNUSED,
463 OM_uint32 timeReq GSSEAP_UNUSED,
464 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
465 gss_buffer_t inputToken,
466 gss_buffer_t outputToken,
469 OM_uint32 major, tmpMinor;
470 struct rs_connection *rconn;
471 struct rs_request *request = NULL;
472 struct rs_packet *req = NULL, *resp = NULL;
473 int isAccessChallenge;
475 if (ctx->acceptorCtx.radContext == NULL) {
476 /* May be NULL from an imported partial context */
477 major = createRadiusHandle(minor, cred, ctx);
478 if (GSS_ERROR(major))
482 if (isIdentityResponseP(inputToken)) {
483 major = importInitiatorIdentity(minor, ctx, inputToken);
484 if (GSS_ERROR(major))
488 rconn = ctx->acceptorCtx.radConn;
490 if (rs_packet_create_authn_request(rconn, &req, NULL, NULL) != 0) {
491 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
495 major = setInitiatorIdentity(minor, ctx, req);
496 if (GSS_ERROR(major))
499 major = setAcceptorIdentity(minor, ctx, req);
500 if (GSS_ERROR(major))
503 major = gssEapRadiusAddAvp(minor, req,
504 PW_EAP_MESSAGE, 0, inputToken);
505 if (GSS_ERROR(major))
508 if (ctx->acceptorCtx.state.length != 0) {
509 major = gssEapRadiusAddAvp(minor, req, PW_STATE, 0,
510 &ctx->acceptorCtx.state);
511 if (GSS_ERROR(major))
514 gss_release_buffer(&tmpMinor, &ctx->acceptorCtx.state);
517 if (rs_request_create(rconn, &request) != 0) {
518 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
522 rs_request_add_reqpkt(request, req);
525 if (rs_request_send(request, &resp) != 0) {
526 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
530 GSSEAP_ASSERT(resp != NULL);
532 isAccessChallenge = 0;
534 switch (rs_packet_code(resp)) {
535 case PW_ACCESS_CHALLENGE:
536 isAccessChallenge = 1;
538 case PW_ACCESS_ACCEPT:
540 case PW_ACCESS_REJECT:
541 *minor = GSSEAP_RADIUS_AUTH_FAILURE;
542 major = GSS_S_DEFECTIVE_CREDENTIAL;
546 *minor = GSSEAP_UNKNOWN_RADIUS_CODE;
547 major = GSS_S_FAILURE;
552 major = gssEapRadiusGetAvp(minor, resp, PW_EAP_MESSAGE, 0,
554 if (major == GSS_S_UNAVAILABLE && isAccessChallenge) {
555 *minor = GSSEAP_MISSING_EAP_REQUEST;
556 major = GSS_S_DEFECTIVE_TOKEN;
558 } else if (GSS_ERROR(major))
561 if (isAccessChallenge) {
562 major = gssEapRadiusGetAvp(minor, resp, PW_STATE, 0,
563 &ctx->acceptorCtx.state, TRUE);
564 if (GSS_ERROR(major) && *minor != GSSEAP_NO_SUCH_ATTR)
569 rs_packet_avps(resp, &vps);
571 ctx->acceptorCtx.vps = *vps;
574 major = acceptReadyEap(minor, ctx, cred);
575 if (GSS_ERROR(major))
578 GSSEAP_SM_TRANSITION_NEXT(ctx);
581 major = GSS_S_CONTINUE_NEEDED;
583 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
587 rs_request_destroy(request);
589 rs_packet_destroy(req);
591 rs_packet_destroy(resp);
592 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIATOR_EXTS) {
593 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
595 rs_conn_destroy(ctx->acceptorCtx.radConn);
596 ctx->acceptorCtx.radConn = NULL;
603 eapGssSmAcceptGssFlags(OM_uint32 *minor,
604 gss_cred_id_t cred 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)
616 OM_uint32 initiatorGssFlags;
618 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
620 if (inputToken->length < 4) {
621 *minor = GSSEAP_TOK_TRUNC;
622 return GSS_S_DEFECTIVE_TOKEN;
625 /* allow flags to grow for future expansion */
626 p = (unsigned char *)inputToken->value + inputToken->length - 4;
628 initiatorGssFlags = load_uint32_be(p);
629 initiatorGssFlags &= GSSEAP_WIRE_FLAGS_MASK;
631 ctx->gssFlags |= initiatorGssFlags;
633 return GSS_S_CONTINUE_NEEDED;
637 eapGssSmAcceptGssChannelBindings(OM_uint32 *minor,
638 gss_cred_id_t cred GSSEAP_UNUSED,
640 gss_name_t target GSSEAP_UNUSED,
641 gss_OID mech GSSEAP_UNUSED,
642 OM_uint32 reqFlags GSSEAP_UNUSED,
643 OM_uint32 timeReq GSSEAP_UNUSED,
644 gss_channel_bindings_t chanBindings,
645 gss_buffer_t inputToken,
646 gss_buffer_t outputToken GSSEAP_UNUSED,
647 OM_uint32 *smFlags GSSEAP_UNUSED)
650 gss_iov_buffer_desc iov[2];
652 iov[0].type = GSS_IOV_BUFFER_TYPE_DATA | GSS_IOV_BUFFER_FLAG_ALLOCATE;
653 iov[0].buffer.length = 0;
654 iov[0].buffer.value = NULL;
656 iov[1].type = GSS_IOV_BUFFER_TYPE_STREAM | GSS_IOV_BUFFER_FLAG_ALLOCATED;
658 /* XXX necessary because decrypted in place and we verify it later */
659 major = duplicateBuffer(minor, inputToken, &iov[1].buffer);
660 if (GSS_ERROR(major))
663 major = gssEapUnwrapOrVerifyMIC(minor, ctx, NULL, NULL,
664 iov, 2, TOK_TYPE_WRAP);
665 if (GSS_ERROR(major)) {
666 gssEapReleaseIov(iov, 2);
670 if (chanBindings != GSS_C_NO_CHANNEL_BINDINGS &&
671 !bufferEqual(&iov[0].buffer, &chanBindings->application_data)) {
672 major = GSS_S_BAD_BINDINGS;
673 *minor = GSSEAP_BINDINGS_MISMATCH;
675 major = GSS_S_CONTINUE_NEEDED;
679 gssEapReleaseIov(iov, 2);
685 eapGssSmAcceptInitiatorMIC(OM_uint32 *minor,
686 gss_cred_id_t cred GSSEAP_UNUSED,
688 gss_name_t target GSSEAP_UNUSED,
689 gss_OID mech GSSEAP_UNUSED,
690 OM_uint32 reqFlags GSSEAP_UNUSED,
691 OM_uint32 timeReq GSSEAP_UNUSED,
692 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
693 gss_buffer_t inputToken,
694 gss_buffer_t outputToken GSSEAP_UNUSED,
695 OM_uint32 *smFlags GSSEAP_UNUSED)
699 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
700 if (GSS_ERROR(major))
703 GSSEAP_SM_TRANSITION_NEXT(ctx);
706 return GSS_S_CONTINUE_NEEDED;
709 #ifdef GSSEAP_ENABLE_REAUTH
711 eapGssSmAcceptReauthCreds(OM_uint32 *minor,
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,
721 OM_uint32 *smFlags GSSEAP_UNUSED)
726 * If we're built with fast reauthentication enabled, then
727 * fabricate a ticket from the initiator to ourselves.
729 major = gssEapMakeReauthCreds(minor, ctx, cred, outputToken);
730 if (major == GSS_S_UNAVAILABLE)
731 major = GSS_S_COMPLETE;
732 if (major == GSS_S_COMPLETE)
733 major = GSS_S_CONTINUE_NEEDED;
740 eapGssSmAcceptAcceptorMIC(OM_uint32 *minor,
741 gss_cred_id_t cred GSSEAP_UNUSED,
743 gss_name_t target GSSEAP_UNUSED,
744 gss_OID mech GSSEAP_UNUSED,
745 OM_uint32 reqFlags GSSEAP_UNUSED,
746 OM_uint32 timeReq GSSEAP_UNUSED,
747 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
748 gss_buffer_t inputToken GSSEAP_UNUSED,
749 gss_buffer_t outputToken,
754 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
755 if (GSS_ERROR(major))
758 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
761 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
763 return GSS_S_COMPLETE;
766 static struct gss_eap_sm eapGssAcceptorSm[] = {
768 ITOK_TYPE_ACCEPTOR_NAME_REQ,
769 ITOK_TYPE_ACCEPTOR_NAME_RESP,
770 GSSEAP_STATE_INITIAL,
772 eapGssSmAcceptAcceptorName
776 ITOK_TYPE_VENDOR_INFO,
778 GSSEAP_STATE_INITIAL,
780 eapGssSmAcceptVendorInfo,
783 #ifdef GSSEAP_ENABLE_REAUTH
785 ITOK_TYPE_REAUTH_REQ,
786 ITOK_TYPE_REAUTH_RESP,
787 GSSEAP_STATE_INITIAL,
789 eapGssSmAcceptGssReauth,
795 GSSEAP_STATE_INITIAL,
796 SM_ITOK_FLAG_REQUIRED,
797 eapGssSmAcceptIdentity,
802 GSSEAP_STATE_AUTHENTICATE,
803 SM_ITOK_FLAG_REQUIRED,
804 eapGssSmAcceptAuthenticate
809 GSSEAP_STATE_INITIATOR_EXTS,
811 eapGssSmAcceptGssFlags
814 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
816 GSSEAP_STATE_INITIATOR_EXTS,
817 SM_ITOK_FLAG_REQUIRED,
818 eapGssSmAcceptGssChannelBindings,
821 ITOK_TYPE_INITIATOR_MIC,
823 GSSEAP_STATE_INITIATOR_EXTS,
824 SM_ITOK_FLAG_REQUIRED,
825 eapGssSmAcceptInitiatorMIC,
827 #ifdef GSSEAP_ENABLE_REAUTH
830 ITOK_TYPE_REAUTH_CREDS,
831 GSSEAP_STATE_ACCEPTOR_EXTS,
833 eapGssSmAcceptReauthCreds,
838 ITOK_TYPE_ACCEPTOR_MIC,
839 GSSEAP_STATE_ACCEPTOR_EXTS,
841 eapGssSmAcceptAcceptorMIC
846 gssEapAcceptSecContext(OM_uint32 *minor,
849 gss_buffer_t input_token,
850 gss_channel_bindings_t input_chan_bindings,
851 gss_name_t *src_name,
853 gss_buffer_t output_token,
854 OM_uint32 *ret_flags,
856 gss_cred_id_t *delegated_cred_handle)
858 OM_uint32 major, tmpMinor;
860 if (cred == GSS_C_NO_CREDENTIAL) {
861 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
862 major = gssEapAcquireCred(minor,
870 if (GSS_ERROR(major))
878 * Previously we acquired the credential mutex here, but it should not be
879 * necessary as the acceptor does not access any mutable elements of the
884 * Calling gssEapInquireCred() forces the default acceptor credential name
887 major = gssEapInquireCred(minor, cred, &ctx->acceptorName, NULL, NULL, NULL);
888 if (GSS_ERROR(major))
891 major = gssEapSmStep(minor,
902 sizeof(eapGssAcceptorSm) / sizeof(eapGssAcceptorSm[0]));
903 if (GSS_ERROR(major))
906 if (mech_type != NULL) {
909 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, mech_type);
910 if (GSS_ERROR(tmpMajor)) {
916 if (ret_flags != NULL)
917 *ret_flags = ctx->gssFlags;
918 if (delegated_cred_handle != NULL)
919 *delegated_cred_handle = GSS_C_NO_CREDENTIAL;
921 if (major == GSS_S_COMPLETE) {
922 if (src_name != NULL && ctx->initiatorName != GSS_C_NO_NAME) {
923 major = gssEapDuplicateName(&tmpMinor, ctx->initiatorName, src_name);
924 if (GSS_ERROR(major))
927 if (time_rec != NULL) {
928 major = gssEapContextTime(&tmpMinor, ctx, time_rec);
929 if (GSS_ERROR(major))
934 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
940 #ifdef GSSEAP_ENABLE_REAUTH
942 acceptReadyKrb(OM_uint32 *minor,
945 const gss_name_t initiator,
951 major = gssEapGlueToMechName(minor, ctx, initiator, &ctx->initiatorName);
952 if (GSS_ERROR(major))
955 major = gssEapReauthComplete(minor, ctx, cred, mech, timeRec);
956 if (GSS_ERROR(major))
960 return GSS_S_COMPLETE;
964 eapGssSmAcceptGssReauth(OM_uint32 *minor,
967 gss_name_t target GSSEAP_UNUSED,
969 OM_uint32 reqFlags GSSEAP_UNUSED,
970 OM_uint32 timeReq GSSEAP_UNUSED,
971 gss_channel_bindings_t chanBindings,
972 gss_buffer_t inputToken,
973 gss_buffer_t outputToken,
976 OM_uint32 major, tmpMinor;
977 gss_name_t krbInitiator = GSS_C_NO_NAME;
978 OM_uint32 gssFlags, timeRec = GSS_C_INDEFINITE;
981 * If we're built with fast reauthentication support, it's valid
982 * for an initiator to send a GSS reauthentication token as its
983 * initial context token, causing us to short-circuit the state
984 * machine and process Kerberos GSS messages instead.
987 ctx->flags |= CTX_FLAG_KRB_REAUTH;
989 major = gssAcceptSecContext(minor,
1000 if (major == GSS_S_COMPLETE) {
1001 major = acceptReadyKrb(minor, ctx, cred,
1002 krbInitiator, mech, timeRec);
1003 if (major == GSS_S_COMPLETE) {
1004 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1006 ctx->gssFlags = gssFlags;
1007 } else if (GSS_ERROR(major) &&
1008 (*smFlags & SM_FLAG_INPUT_TOKEN_CRITICAL) == 0) {
1009 /* pretend reauthentication attempt never happened */
1010 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
1011 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
1012 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
1013 major = GSS_S_CONTINUE_NEEDED;
1016 gssReleaseName(&tmpMinor, &krbInitiator);
1020 #endif /* GSSEAP_ENABLE_REAUTH */
1022 OM_uint32 GSSAPI_CALLCONV
1023 gss_accept_sec_context(OM_uint32 *minor,
1024 gss_ctx_id_t *context_handle,
1026 gss_buffer_t input_token,
1027 gss_channel_bindings_t input_chan_bindings,
1028 gss_name_t *src_name,
1030 gss_buffer_t output_token,
1031 OM_uint32 *ret_flags,
1032 OM_uint32 *time_rec,
1033 gss_cred_id_t *delegated_cred_handle)
1035 OM_uint32 major, tmpMinor;
1036 gss_ctx_id_t ctx = *context_handle;
1040 output_token->length = 0;
1041 output_token->value = NULL;
1043 if (src_name != NULL)
1044 *src_name = GSS_C_NO_NAME;
1046 if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) {
1047 *minor = GSSEAP_TOK_TRUNC;
1048 return GSS_S_DEFECTIVE_TOKEN;
1051 if (ctx == GSS_C_NO_CONTEXT) {
1052 major = gssEapAllocContext(minor, &ctx);
1053 if (GSS_ERROR(major))
1056 *context_handle = ctx;
1059 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1061 major = gssEapAcceptSecContext(minor,
1065 input_chan_bindings,
1071 delegated_cred_handle);
1073 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1075 if (GSS_ERROR(major))
1076 gssEapReleaseContext(&tmpMinor, context_handle);