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) {
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))
125 return GSS_S_COMPLETE;
129 eapGssSmAcceptAcceptorName(OM_uint32 *minor,
130 gss_cred_id_t cred GSSEAP_UNUSED,
132 gss_name_t target GSSEAP_UNUSED,
133 gss_OID mech GSSEAP_UNUSED,
134 OM_uint32 reqFlags GSSEAP_UNUSED,
135 OM_uint32 timeReq GSSEAP_UNUSED,
136 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
137 gss_buffer_t inputToken GSSEAP_UNUSED,
138 gss_buffer_t outputToken,
139 OM_uint32 *smFlags GSSEAP_UNUSED)
143 /* XXX TODO import and validate name from inputToken */
145 if (ctx->acceptorName != GSS_C_NO_NAME) {
146 /* Send desired target name to acceptor */
147 major = gssEapDisplayName(minor, ctx->acceptorName,
149 if (GSS_ERROR(major))
153 return GSS_S_CONTINUE_NEEDED;
158 eapGssSmAcceptVendorInfo(OM_uint32 *minor,
159 gss_cred_id_t cred GSSEAP_UNUSED,
160 gss_ctx_id_t ctx GSSEAP_UNUSED,
161 gss_name_t target GSSEAP_UNUSED,
162 gss_OID mech GSSEAP_UNUSED,
163 OM_uint32 reqFlags GSSEAP_UNUSED,
164 OM_uint32 timeReq GSSEAP_UNUSED,
165 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
166 gss_buffer_t inputToken,
167 gss_buffer_t outputToken GSSEAP_UNUSED,
168 OM_uint32 *smFlags GSSEAP_UNUSED)
170 fprintf(stderr, "GSS-EAP: vendor: %.*s\n",
171 (int)inputToken->length, (char *)inputToken->value);
174 return GSS_S_CONTINUE_NEEDED;
180 * Emit a identity EAP request to force the initiator (peer) to identify
184 eapGssSmAcceptIdentity(OM_uint32 *minor,
187 gss_name_t target GSSEAP_UNUSED,
188 gss_OID mech GSSEAP_UNUSED,
189 OM_uint32 reqFlags GSSEAP_UNUSED,
190 OM_uint32 timeReq GSSEAP_UNUSED,
191 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
192 gss_buffer_t inputToken,
193 gss_buffer_t outputToken,
197 struct wpabuf *reqData;
198 gss_buffer_desc pktBuffer;
200 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
201 *minor = GSSEAP_CRED_MECH_MISMATCH;
202 return GSS_S_BAD_MECH;
205 if (inputToken != GSS_C_NO_BUFFER && inputToken->length != 0) {
206 *minor = GSSEAP_WRONG_SIZE;
207 return GSS_S_DEFECTIVE_TOKEN;
210 reqData = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY, 0,
211 EAP_CODE_REQUEST, 0);
212 if (reqData == NULL) {
214 return GSS_S_FAILURE;
217 pktBuffer.length = wpabuf_len(reqData);
218 pktBuffer.value = (void *)wpabuf_head(reqData);
220 major = duplicateBuffer(minor, &pktBuffer, outputToken);
221 if (GSS_ERROR(major))
224 wpabuf_free(reqData);
226 GSSEAP_SM_TRANSITION_NEXT(ctx);
229 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
231 return GSS_S_CONTINUE_NEEDED;
235 * Returns TRUE if the input token contains an EAP identity response.
238 isIdentityResponseP(gss_buffer_t inputToken)
240 struct wpabuf respData;
242 wpabuf_set(&respData, inputToken->value, inputToken->length);
244 return (eap_get_type(&respData) == EAP_TYPE_IDENTITY);
248 * Save the asserted initiator identity from the EAP identity response.
251 importInitiatorIdentity(OM_uint32 *minor,
253 gss_buffer_t inputToken)
256 struct wpabuf respData;
257 const unsigned char *pos;
259 gss_buffer_desc nameBuf;
261 wpabuf_set(&respData, inputToken->value, inputToken->length);
263 pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
266 *minor = GSSEAP_PEER_BAD_MESSAGE;
267 return GSS_S_DEFECTIVE_TOKEN;
270 nameBuf.value = (void *)pos;
271 nameBuf.length = len;
273 gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
275 return gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
276 ctx->mechanismUsed, &ctx->initiatorName);
280 * Pass the asserted initiator identity to the authentication server.
283 setInitiatorIdentity(OM_uint32 *minor,
287 OM_uint32 major, tmpMinor;
288 gss_buffer_desc nameBuf;
291 * We should have got an EAP identity response, but if we didn't, then
292 * we will just avoid sending User-Name. Note that radsecproxy requires
293 * User-Name to be sent on every request (presumably so it can remain
296 if (ctx->initiatorName != GSS_C_NO_NAME) {
297 major = gssEapDisplayName(minor, ctx->initiatorName, &nameBuf, NULL);
298 if (GSS_ERROR(major))
301 major = gssEapRadiusAddAvp(minor, vps, PW_USER_NAME, 0, &nameBuf);
302 if (GSS_ERROR(major))
305 gss_release_buffer(&tmpMinor, &nameBuf);
309 return GSS_S_COMPLETE;
313 * Pass the asserted acceptor identity to the authentication server.
316 setAcceptorIdentity(OM_uint32 *minor,
321 gss_buffer_desc nameBuf;
322 krb5_context krbContext = NULL;
323 krb5_principal krbPrinc;
324 struct rs_context *rc = ctx->acceptorCtx.radContext;
328 if (ctx->acceptorName == GSS_C_NO_NAME) {
330 return GSS_S_COMPLETE;
333 if ((ctx->acceptorName->flags & NAME_FLAG_SERVICE) == 0) {
334 *minor = GSSEAP_BAD_SERVICE_NAME;
335 return GSS_S_BAD_NAME;
338 GSSEAP_KRB_INIT(&krbContext);
340 krbPrinc = ctx->acceptorName->krbPrincipal;
341 assert(krbPrinc != NULL);
342 assert(KRB_PRINC_LENGTH(krbPrinc) >= 2);
344 /* Acceptor-Service-Name */
345 krbPrincComponentToGssBuffer(krbPrinc, 0, &nameBuf);
347 major = gssEapRadiusAddAvp(minor, vps,
348 PW_GSS_ACCEPTOR_SERVICE_NAME,
351 if (GSS_ERROR(major))
354 /* Acceptor-Host-Name */
355 krbPrincComponentToGssBuffer(krbPrinc, 1, &nameBuf);
357 major = gssEapRadiusAddAvp(minor, vps,
358 PW_GSS_ACCEPTOR_HOST_NAME,
361 if (GSS_ERROR(major))
364 if (KRB_PRINC_LENGTH(krbPrinc) > 2) {
365 /* Acceptor-Service-Specific */
366 krb5_principal_data ssiPrinc = *krbPrinc;
369 KRB_PRINC_LENGTH(&ssiPrinc) -= 2;
370 KRB_PRINC_NAME(&ssiPrinc) += 2;
372 *minor = krb5_unparse_name_flags(krbContext, &ssiPrinc,
373 KRB5_PRINCIPAL_UNPARSE_NO_REALM, &ssi);
375 return GSS_S_FAILURE;
378 nameBuf.length = strlen(ssi);
380 major = gssEapRadiusAddAvp(minor, vps,
381 PW_GSS_ACCEPTOR_SERVICE_SPECIFIC,
385 if (GSS_ERROR(major)) {
386 krb5_free_unparsed_name(krbContext, ssi);
389 krb5_free_unparsed_name(krbContext, ssi);
392 krbPrincRealmToGssBuffer(krbPrinc, &nameBuf);
393 if (nameBuf.length != 0) {
394 /* Acceptor-Realm-Name */
395 major = gssEapRadiusAddAvp(minor, vps,
396 PW_GSS_ACCEPTOR_REALM_NAME,
399 if (GSS_ERROR(major))
404 return GSS_S_COMPLETE;
408 * Allocate a RadSec handle
411 createRadiusHandle(OM_uint32 *minor,
415 struct gss_eap_acceptor_ctx *actx = &ctx->acceptorCtx;
416 const char *configFile = RS_CONFIG_FILE;
417 const char *configStanza = "gss-eap";
418 struct rs_alloc_scheme ralloc;
419 struct rs_error *err;
421 assert(actx->radContext == NULL);
422 assert(actx->radConn == NULL);
424 if (rs_context_create(&actx->radContext) != 0) {
425 *minor = GSSEAP_RADSEC_CONTEXT_FAILURE;
426 return GSS_S_FAILURE;
429 if (cred->radiusConfigFile != NULL)
430 configFile = cred->radiusConfigFile;
431 if (cred->radiusConfigStanza != NULL)
432 configStanza = cred->radiusConfigStanza;
434 ralloc.calloc = GSSEAP_CALLOC;
435 ralloc.malloc = GSSEAP_MALLOC;
436 ralloc.free = GSSEAP_FREE;
437 ralloc.realloc = GSSEAP_REALLOC;
439 rs_context_set_alloc_scheme(actx->radContext, &ralloc);
441 if (rs_context_read_config(actx->radContext, configFile) != 0) {
442 err = rs_err_ctx_pop(actx->radContext);
446 if (rs_context_init_freeradius_dict(actx->radContext, NULL) != 0) {
447 err = rs_err_ctx_pop(actx->radContext);
451 if (rs_conn_create(actx->radContext, &actx->radConn, configStanza) != 0) {
452 err = rs_err_conn_pop(actx->radConn);
456 if (actx->radServer != NULL) {
457 if (rs_conn_select_peer(actx->radConn, actx->radServer) != 0) {
458 err = rs_err_conn_pop(actx->radConn);
464 return GSS_S_COMPLETE;
467 return gssEapRadiusMapError(minor, err);
471 * Process a EAP response from the initiator.
474 eapGssSmAcceptAuthenticate(OM_uint32 *minor,
477 gss_name_t target GSSEAP_UNUSED,
478 gss_OID mech GSSEAP_UNUSED,
479 OM_uint32 reqFlags GSSEAP_UNUSED,
480 OM_uint32 timeReq GSSEAP_UNUSED,
481 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
482 gss_buffer_t inputToken,
483 gss_buffer_t outputToken,
486 OM_uint32 major, tmpMinor;
487 struct rs_connection *rconn;
488 struct rs_request *request = NULL;
489 struct rs_packet *req = NULL, *resp = NULL;
490 struct radius_packet *frreq, *frresp;
492 if (ctx->acceptorCtx.radContext == NULL) {
493 /* May be NULL from an imported partial context */
494 major = createRadiusHandle(minor, cred, ctx);
495 if (GSS_ERROR(major))
499 if (isIdentityResponseP(inputToken)) {
500 major = importInitiatorIdentity(minor, ctx, inputToken);
501 if (GSS_ERROR(major))
505 rconn = ctx->acceptorCtx.radConn;
507 if (rs_packet_create_authn_request(rconn, &req, NULL, NULL) != 0) {
508 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
511 frreq = rs_packet_frpkt(req);
513 major = setInitiatorIdentity(minor, ctx, &frreq->vps);
514 if (GSS_ERROR(major))
517 major = setAcceptorIdentity(minor, ctx, &frreq->vps);
518 if (GSS_ERROR(major))
521 major = gssEapRadiusAddAvp(minor, &frreq->vps,
522 PW_EAP_MESSAGE, 0, inputToken);
523 if (GSS_ERROR(major))
526 if (ctx->acceptorCtx.state.length != 0) {
527 major = gssEapRadiusAddAvp(minor, &frreq->vps, PW_STATE, 0,
528 &ctx->acceptorCtx.state);
529 if (GSS_ERROR(major))
532 gss_release_buffer(&tmpMinor, &ctx->acceptorCtx.state);
535 if (rs_request_create(rconn, &request) != 0) {
536 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
540 rs_request_add_reqpkt(request, req);
543 if (rs_request_send(request, &resp) != 0) {
544 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
548 assert(resp != NULL);
550 frresp = rs_packet_frpkt(resp);
551 switch (frresp->code) {
552 case PW_ACCESS_CHALLENGE:
553 case PW_AUTHENTICATION_ACK:
555 case PW_AUTHENTICATION_REJECT:
556 *minor = GSSEAP_RADIUS_AUTH_FAILURE;
557 major = GSS_S_DEFECTIVE_CREDENTIAL;
561 *minor = GSSEAP_UNKNOWN_RADIUS_CODE;
562 major = GSS_S_FAILURE;
567 major = gssEapRadiusGetAvp(minor, frresp->vps, PW_EAP_MESSAGE, 0,
569 if (major == GSS_S_UNAVAILABLE && frresp->code == PW_ACCESS_CHALLENGE) {
570 *minor = GSSEAP_MISSING_EAP_REQUEST;
571 major = GSS_S_DEFECTIVE_TOKEN;
573 } else if (GSS_ERROR(major))
576 if (frresp->code == PW_ACCESS_CHALLENGE) {
577 major = gssEapRadiusGetAvp(minor, frresp->vps, PW_STATE, 0,
578 &ctx->acceptorCtx.state, TRUE);
579 if (GSS_ERROR(major) && *minor != GSSEAP_NO_SUCH_ATTR)
582 ctx->acceptorCtx.vps = frresp->vps;
585 major = acceptReadyEap(minor, ctx, cred);
586 if (GSS_ERROR(major))
589 GSSEAP_SM_TRANSITION_NEXT(ctx);
592 major = GSS_S_CONTINUE_NEEDED;
594 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
598 rs_request_destroy(request);
600 rs_packet_destroy(req);
602 rs_packet_destroy(resp);
603 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIATOR_EXTS) {
604 assert(major == GSS_S_CONTINUE_NEEDED);
606 rs_conn_destroy(ctx->acceptorCtx.radConn);
607 ctx->acceptorCtx.radConn = NULL;
614 eapGssSmAcceptGssChannelBindings(OM_uint32 *minor,
615 gss_cred_id_t cred GSSEAP_UNUSED,
617 gss_name_t target GSSEAP_UNUSED,
618 gss_OID mech GSSEAP_UNUSED,
619 OM_uint32 reqFlags GSSEAP_UNUSED,
620 OM_uint32 timeReq GSSEAP_UNUSED,
621 gss_channel_bindings_t chanBindings,
622 gss_buffer_t inputToken,
623 gss_buffer_t outputToken GSSEAP_UNUSED,
624 OM_uint32 *smFlags GSSEAP_UNUSED)
626 OM_uint32 major, tmpMinor;
627 gss_iov_buffer_desc iov[2];
629 iov[0].type = GSS_IOV_BUFFER_TYPE_DATA | GSS_IOV_BUFFER_FLAG_ALLOCATE;
630 iov[0].buffer.length = 0;
631 iov[0].buffer.value = NULL;
633 iov[1].type = GSS_IOV_BUFFER_TYPE_STREAM;
634 iov[1].buffer = *inputToken;
636 major = gssEapUnwrapOrVerifyMIC(minor, ctx, NULL, NULL,
637 iov, 2, TOK_TYPE_WRAP);
638 if (GSS_ERROR(major))
641 if (chanBindings != GSS_C_NO_CHANNEL_BINDINGS &&
642 !bufferEqual(&iov[0].buffer, &chanBindings->application_data)) {
643 major = GSS_S_BAD_BINDINGS;
644 *minor = GSSEAP_BINDINGS_MISMATCH;
646 major = GSS_S_CONTINUE_NEEDED;
650 gss_release_buffer(&tmpMinor, &iov[0].buffer);
655 #ifdef GSSEAP_ENABLE_REAUTH
657 eapGssSmAcceptReauthCreds(OM_uint32 *minor,
660 gss_name_t target GSSEAP_UNUSED,
661 gss_OID mech GSSEAP_UNUSED,
662 OM_uint32 reqFlags GSSEAP_UNUSED,
663 OM_uint32 timeReq GSSEAP_UNUSED,
664 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
665 gss_buffer_t inputToken GSSEAP_UNUSED,
666 gss_buffer_t outputToken,
667 OM_uint32 *smFlags GSSEAP_UNUSED)
672 * If we're built with fast reauthentication enabled, then
673 * fabricate a ticket from the initiator to ourselves.
675 major = gssEapMakeReauthCreds(minor, ctx, cred, outputToken);
676 if (major == GSS_S_UNAVAILABLE)
677 major = GSS_S_COMPLETE;
678 if (major == GSS_S_COMPLETE)
679 major = GSS_S_CONTINUE_NEEDED;
686 eapGssSmAcceptCompleteInitiatorExts(OM_uint32 *minor,
687 gss_cred_id_t cred GSSEAP_UNUSED,
689 gss_name_t target GSSEAP_UNUSED,
690 gss_OID mech GSSEAP_UNUSED,
691 OM_uint32 reqFlags GSSEAP_UNUSED,
692 OM_uint32 timeReq GSSEAP_UNUSED,
693 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
694 gss_buffer_t inputToken GSSEAP_UNUSED,
695 gss_buffer_t outputToken GSSEAP_UNUSED,
696 OM_uint32 *smFlags GSSEAP_UNUSED)
698 GSSEAP_SM_TRANSITION_NEXT(ctx);
702 return GSS_S_CONTINUE_NEEDED;
706 eapGssSmAcceptCompleteAcceptorExts(OM_uint32 *minor,
707 gss_cred_id_t cred GSSEAP_UNUSED,
709 gss_name_t target GSSEAP_UNUSED,
710 gss_OID mech GSSEAP_UNUSED,
711 OM_uint32 reqFlags GSSEAP_UNUSED,
712 OM_uint32 timeReq GSSEAP_UNUSED,
713 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
714 gss_buffer_t inputToken GSSEAP_UNUSED,
715 gss_buffer_t outputToken GSSEAP_UNUSED,
718 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
721 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
723 return GSS_S_COMPLETE;
726 static struct gss_eap_sm eapGssAcceptorSm[] = {
728 ITOK_TYPE_ACCEPTOR_NAME_REQ,
729 ITOK_TYPE_ACCEPTOR_NAME_RESP,
730 GSSEAP_STATE_INITIAL,
732 eapGssSmAcceptAcceptorName
736 ITOK_TYPE_VENDOR_INFO,
738 GSSEAP_STATE_INITIAL,
740 eapGssSmAcceptVendorInfo,
743 #ifdef GSSEAP_ENABLE_REAUTH
745 ITOK_TYPE_REAUTH_REQ,
746 ITOK_TYPE_REAUTH_RESP,
747 GSSEAP_STATE_INITIAL,
749 eapGssSmAcceptGssReauth,
755 GSSEAP_STATE_INITIAL,
756 SM_ITOK_FLAG_REQUIRED,
757 eapGssSmAcceptIdentity,
762 GSSEAP_STATE_AUTHENTICATE,
763 SM_ITOK_FLAG_REQUIRED,
764 eapGssSmAcceptAuthenticate
767 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
769 GSSEAP_STATE_INITIATOR_EXTS,
770 SM_ITOK_FLAG_REQUIRED,
771 eapGssSmAcceptGssChannelBindings,
776 GSSEAP_STATE_INITIATOR_EXTS,
778 eapGssSmAcceptCompleteInitiatorExts,
780 #ifdef GSSEAP_ENABLE_REAUTH
783 ITOK_TYPE_REAUTH_CREDS,
784 GSSEAP_STATE_ACCEPTOR_EXTS,
786 eapGssSmAcceptReauthCreds,
792 GSSEAP_STATE_ACCEPTOR_EXTS,
794 eapGssSmAcceptCompleteAcceptorExts
799 gss_accept_sec_context(OM_uint32 *minor,
800 gss_ctx_id_t *context_handle,
802 gss_buffer_t input_token,
803 gss_channel_bindings_t input_chan_bindings,
804 gss_name_t *src_name,
806 gss_buffer_t output_token,
807 OM_uint32 *ret_flags,
809 gss_cred_id_t *delegated_cred_handle)
811 OM_uint32 major, tmpMinor;
812 gss_ctx_id_t ctx = *context_handle;
816 output_token->length = 0;
817 output_token->value = NULL;
819 if (src_name != NULL)
820 *src_name = GSS_C_NO_NAME;
822 if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) {
823 *minor = GSSEAP_TOK_TRUNC;
824 return GSS_S_DEFECTIVE_TOKEN;
827 if (ctx == GSS_C_NO_CONTEXT) {
828 major = gssEapAllocContext(minor, &ctx);
829 if (GSS_ERROR(major))
832 *context_handle = ctx;
835 GSSEAP_MUTEX_LOCK(&ctx->mutex);
837 if (cred == GSS_C_NO_CREDENTIAL) {
838 if (ctx->defaultCred == GSS_C_NO_CREDENTIAL) {
839 major = gssEapAcquireCred(minor,
848 if (GSS_ERROR(major))
852 cred = ctx->defaultCred;
855 GSSEAP_MUTEX_LOCK(&cred->mutex);
857 if (cred->name != GSS_C_NO_NAME) {
858 major = gssEapDuplicateName(minor, cred->name, &ctx->acceptorName);
859 if (GSS_ERROR(major))
863 major = gssEapSmStep(minor,
874 sizeof(eapGssAcceptorSm) / sizeof(eapGssAcceptorSm[0]));
875 if (GSS_ERROR(major))
878 if (mech_type != NULL) {
881 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, mech_type);
882 if (GSS_ERROR(tmpMajor)) {
888 if (ret_flags != NULL)
889 *ret_flags = ctx->gssFlags;
890 if (delegated_cred_handle != NULL)
891 *delegated_cred_handle = GSS_C_NO_CREDENTIAL;
893 if (major == GSS_S_COMPLETE) {
894 if (src_name != NULL && ctx->initiatorName != GSS_C_NO_NAME) {
895 major = gssEapDuplicateName(&tmpMinor, ctx->initiatorName, src_name);
896 if (GSS_ERROR(major))
899 if (time_rec != NULL) {
900 major = gssEapContextTime(&tmpMinor, ctx, time_rec);
901 if (GSS_ERROR(major))
906 assert(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
909 if (cred != GSS_C_NO_CREDENTIAL)
910 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
911 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
913 if (GSS_ERROR(major))
914 gssEapReleaseContext(&tmpMinor, context_handle);
919 #ifdef GSSEAP_ENABLE_REAUTH
921 acceptReadyKrb(OM_uint32 *minor,
924 const gss_name_t initiator,
930 major = gssEapGlueToMechName(minor, ctx, initiator, &ctx->initiatorName);
931 if (GSS_ERROR(major))
934 major = gssEapReauthComplete(minor, ctx, cred, mech, timeRec);
935 if (GSS_ERROR(major))
939 return GSS_S_COMPLETE;
943 eapGssSmAcceptGssReauth(OM_uint32 *minor,
946 gss_name_t target GSSEAP_UNUSED,
948 OM_uint32 reqFlags GSSEAP_UNUSED,
949 OM_uint32 timeReq GSSEAP_UNUSED,
950 gss_channel_bindings_t chanBindings,
951 gss_buffer_t inputToken,
952 gss_buffer_t outputToken,
955 OM_uint32 major, tmpMinor;
956 gss_name_t krbInitiator = GSS_C_NO_NAME;
957 OM_uint32 gssFlags, timeRec = GSS_C_INDEFINITE;
960 * If we're built with fast reauthentication support, it's valid
961 * for an initiator to send a GSS reauthentication token as its
962 * initial context token, causing us to short-circuit the state
963 * machine and process Kerberos GSS messages instead.
966 ctx->flags |= CTX_FLAG_KRB_REAUTH;
968 major = gssAcceptSecContext(minor,
979 if (major == GSS_S_COMPLETE) {
980 major = acceptReadyKrb(minor, ctx, cred,
981 krbInitiator, mech, timeRec);
982 if (major == GSS_S_COMPLETE) {
983 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
985 ctx->gssFlags = gssFlags;
986 } else if (GSS_ERROR(major) &&
987 (*smFlags & SM_FLAG_INPUT_TOKEN_CRITICAL) == 0) {
988 /* pretend reauthentication attempt never happened */
989 gssDeleteSecContext(&tmpMinor, &ctx->kerberosCtx, GSS_C_NO_BUFFER);
990 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
991 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
992 major = GSS_S_CONTINUE_NEEDED;
995 gssReleaseName(&tmpMinor, &krbInitiator);
999 #endif /* GSSEAP_ENABLE_REAUTH */