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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 *minor = krbPrincUnparseServiceSpecifics(krbContext,
375 return GSS_S_FAILURE;
377 major = gssEapRadiusAddAvp(minor, req,
378 PW_GSS_ACCEPTOR_SERVICE_SPECIFICS,
381 krbFreeUnparsedName(krbContext, &nameBuf);
382 if (GSS_ERROR(major))
386 krbPrincRealmToGssBuffer(krbPrinc, &nameBuf);
387 if (nameBuf.length != 0) {
388 /* Acceptor-Realm-Name */
389 major = gssEapRadiusAddAvp(minor, req,
390 PW_GSS_ACCEPTOR_REALM_NAME,
393 if (GSS_ERROR(major))
398 return GSS_S_COMPLETE;
402 * Allocate a RadSec handle
405 createRadiusHandle(OM_uint32 *minor,
409 struct gss_eap_acceptor_ctx *actx = &ctx->acceptorCtx;
410 struct rs_error *err;
411 const char *configStanza = "gss-eap";
414 GSSEAP_ASSERT(actx->radContext == NULL);
415 GSSEAP_ASSERT(actx->radConn == NULL);
416 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
418 major = gssEapCreateRadiusContext(minor, cred, &actx->radContext);
419 if (GSS_ERROR(major))
422 if (cred->radiusConfigStanza.value != NULL)
423 configStanza = (const char *)cred->radiusConfigStanza.value;
425 if (rs_conn_create(actx->radContext, &actx->radConn, configStanza) != 0) {
426 err = rs_err_conn_pop(actx->radConn);
427 return gssEapRadiusMapError(minor, err);
430 if (actx->radServer != NULL) {
431 if (rs_conn_select_peer(actx->radConn, actx->radServer) != 0) {
432 err = rs_err_conn_pop(actx->radConn);
433 return gssEapRadiusMapError(minor, err);
438 return GSS_S_COMPLETE;
442 * Process a EAP response from the initiator.
445 eapGssSmAcceptAuthenticate(OM_uint32 *minor,
448 gss_name_t target GSSEAP_UNUSED,
449 gss_OID mech GSSEAP_UNUSED,
450 OM_uint32 reqFlags GSSEAP_UNUSED,
451 OM_uint32 timeReq GSSEAP_UNUSED,
452 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
453 gss_buffer_t inputToken,
454 gss_buffer_t outputToken,
457 OM_uint32 major, tmpMinor;
458 struct rs_connection *rconn;
459 struct rs_request *request = NULL;
460 struct rs_packet *req = NULL, *resp = NULL;
461 int isAccessChallenge;
463 if (ctx->acceptorCtx.radContext == NULL) {
464 /* May be NULL from an imported partial context */
465 major = createRadiusHandle(minor, cred, ctx);
466 if (GSS_ERROR(major))
470 if (isIdentityResponseP(inputToken)) {
471 major = importInitiatorIdentity(minor, ctx, inputToken);
472 if (GSS_ERROR(major))
476 rconn = ctx->acceptorCtx.radConn;
478 if (rs_packet_create_authn_request(rconn, &req, NULL, NULL) != 0) {
479 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
483 major = setInitiatorIdentity(minor, ctx, req);
484 if (GSS_ERROR(major))
487 major = setAcceptorIdentity(minor, ctx, req);
488 if (GSS_ERROR(major))
491 major = gssEapRadiusAddAvp(minor, req,
492 PW_EAP_MESSAGE, 0, inputToken);
493 if (GSS_ERROR(major))
496 if (ctx->acceptorCtx.state.length != 0) {
497 major = gssEapRadiusAddAvp(minor, req, PW_STATE, 0,
498 &ctx->acceptorCtx.state);
499 if (GSS_ERROR(major))
502 gss_release_buffer(&tmpMinor, &ctx->acceptorCtx.state);
505 if (rs_request_create(rconn, &request) != 0) {
506 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
510 rs_request_add_reqpkt(request, req);
513 if (rs_request_send(request, &resp) != 0) {
514 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
518 GSSEAP_ASSERT(resp != NULL);
520 isAccessChallenge = 0;
522 switch (rs_packet_code(resp)) {
523 case PW_ACCESS_CHALLENGE:
524 isAccessChallenge = 1;
526 case PW_ACCESS_ACCEPT:
528 case PW_ACCESS_REJECT:
529 *minor = GSSEAP_RADIUS_AUTH_FAILURE;
530 major = GSS_S_DEFECTIVE_CREDENTIAL;
534 *minor = GSSEAP_UNKNOWN_RADIUS_CODE;
535 major = GSS_S_FAILURE;
540 major = gssEapRadiusGetAvp(minor, resp, PW_EAP_MESSAGE, 0,
542 if (major == GSS_S_UNAVAILABLE && isAccessChallenge) {
543 *minor = GSSEAP_MISSING_EAP_REQUEST;
544 major = GSS_S_DEFECTIVE_TOKEN;
546 } else if (GSS_ERROR(major))
549 if (isAccessChallenge) {
550 major = gssEapRadiusGetAvp(minor, resp, PW_STATE, 0,
551 &ctx->acceptorCtx.state, TRUE);
552 if (GSS_ERROR(major) && *minor != GSSEAP_NO_SUCH_ATTR)
557 rs_packet_avps(resp, &vps);
559 ctx->acceptorCtx.vps = *vps;
562 major = acceptReadyEap(minor, ctx, cred);
563 if (GSS_ERROR(major))
566 GSSEAP_SM_TRANSITION_NEXT(ctx);
569 major = GSS_S_CONTINUE_NEEDED;
571 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
575 rs_request_destroy(request);
577 rs_packet_destroy(req);
579 rs_packet_destroy(resp);
580 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIATOR_EXTS) {
581 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
583 rs_conn_destroy(ctx->acceptorCtx.radConn);
584 ctx->acceptorCtx.radConn = NULL;
591 eapGssSmAcceptGssFlags(OM_uint32 *minor,
592 gss_cred_id_t cred GSSEAP_UNUSED,
594 gss_name_t target GSSEAP_UNUSED,
595 gss_OID mech GSSEAP_UNUSED,
596 OM_uint32 reqFlags GSSEAP_UNUSED,
597 OM_uint32 timeReq GSSEAP_UNUSED,
598 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
599 gss_buffer_t inputToken,
600 gss_buffer_t outputToken GSSEAP_UNUSED,
601 OM_uint32 *smFlags GSSEAP_UNUSED)
604 OM_uint32 initiatorGssFlags;
606 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
608 if (inputToken->length < 4) {
609 *minor = GSSEAP_TOK_TRUNC;
610 return GSS_S_DEFECTIVE_TOKEN;
613 /* allow flags to grow for future expansion */
614 p = (unsigned char *)inputToken->value + inputToken->length - 4;
616 initiatorGssFlags = load_uint32_be(p);
617 initiatorGssFlags &= GSSEAP_WIRE_FLAGS_MASK;
619 ctx->gssFlags |= initiatorGssFlags;
621 return GSS_S_CONTINUE_NEEDED;
625 eapGssSmAcceptGssChannelBindings(OM_uint32 *minor,
626 gss_cred_id_t cred GSSEAP_UNUSED,
628 gss_name_t target GSSEAP_UNUSED,
629 gss_OID mech GSSEAP_UNUSED,
630 OM_uint32 reqFlags GSSEAP_UNUSED,
631 OM_uint32 timeReq GSSEAP_UNUSED,
632 gss_channel_bindings_t chanBindings,
633 gss_buffer_t inputToken,
634 gss_buffer_t outputToken GSSEAP_UNUSED,
635 OM_uint32 *smFlags GSSEAP_UNUSED)
637 krb5_error_code code;
638 krb5_context krbContext;
641 krb5_boolean valid = FALSE;
643 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
644 chanBindings->application_data.length == 0)
645 return GSS_S_CONTINUE_NEEDED;
647 GSSEAP_KRB_INIT(&krbContext);
649 KRB_DATA_INIT(&data);
651 gssBufferToKrbData(&chanBindings->application_data, &data);
653 KRB_CHECKSUM_INIT(&cksum, ctx->checksumType, inputToken);
655 code = krb5_c_verify_checksum(krbContext, &ctx->rfc3961Key,
656 KEY_USAGE_GSSEAP_CHBIND_MIC,
657 &data, &cksum, &valid);
660 return GSS_S_FAILURE;
663 if (valid == FALSE) {
664 *minor = GSSEAP_BINDINGS_MISMATCH;
665 return GSS_S_BAD_BINDINGS;
668 ctx->flags |= CTX_FLAG_CHANNEL_BINDINGS_VERIFIED;
671 return GSS_S_CONTINUE_NEEDED;
675 eapGssSmAcceptInitiatorMIC(OM_uint32 *minor,
676 gss_cred_id_t cred GSSEAP_UNUSED,
678 gss_name_t target GSSEAP_UNUSED,
679 gss_OID mech GSSEAP_UNUSED,
680 OM_uint32 reqFlags GSSEAP_UNUSED,
681 OM_uint32 timeReq GSSEAP_UNUSED,
682 gss_channel_bindings_t chanBindings,
683 gss_buffer_t inputToken,
684 gss_buffer_t outputToken GSSEAP_UNUSED,
685 OM_uint32 *smFlags GSSEAP_UNUSED)
690 * The channel binding token is optional, however if the caller indicated
691 * bindings we must raise an error if it was absent.
693 * In the future, we might use a context option to allow the caller to
694 * indicate that missing bindings are acceptable.
696 if (chanBindings != NULL &&
697 chanBindings->application_data.length != 0 &&
698 (ctx->flags & CTX_FLAG_CHANNEL_BINDINGS_VERIFIED) == 0) {
699 *minor = GSSEAP_MISSING_BINDINGS;
700 return GSS_S_BAD_BINDINGS;
703 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
704 if (GSS_ERROR(major))
707 GSSEAP_SM_TRANSITION_NEXT(ctx);
710 return GSS_S_CONTINUE_NEEDED;
713 #ifdef GSSEAP_ENABLE_REAUTH
715 eapGssSmAcceptReauthCreds(OM_uint32 *minor,
718 gss_name_t target GSSEAP_UNUSED,
719 gss_OID mech GSSEAP_UNUSED,
720 OM_uint32 reqFlags GSSEAP_UNUSED,
721 OM_uint32 timeReq GSSEAP_UNUSED,
722 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
723 gss_buffer_t inputToken GSSEAP_UNUSED,
724 gss_buffer_t outputToken,
725 OM_uint32 *smFlags GSSEAP_UNUSED)
730 * If we're built with fast reauthentication enabled, then
731 * fabricate a ticket from the initiator to ourselves.
733 major = gssEapMakeReauthCreds(minor, ctx, cred, outputToken);
734 if (major == GSS_S_UNAVAILABLE)
735 major = GSS_S_COMPLETE;
736 if (major == GSS_S_COMPLETE)
737 major = GSS_S_CONTINUE_NEEDED;
744 eapGssSmAcceptAcceptorMIC(OM_uint32 *minor,
745 gss_cred_id_t cred GSSEAP_UNUSED,
747 gss_name_t target GSSEAP_UNUSED,
748 gss_OID mech GSSEAP_UNUSED,
749 OM_uint32 reqFlags GSSEAP_UNUSED,
750 OM_uint32 timeReq GSSEAP_UNUSED,
751 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
752 gss_buffer_t inputToken GSSEAP_UNUSED,
753 gss_buffer_t outputToken,
758 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
759 if (GSS_ERROR(major))
762 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
765 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
767 return GSS_S_COMPLETE;
770 static struct gss_eap_sm eapGssAcceptorSm[] = {
772 ITOK_TYPE_ACCEPTOR_NAME_REQ,
773 ITOK_TYPE_ACCEPTOR_NAME_RESP,
774 GSSEAP_STATE_INITIAL,
776 eapGssSmAcceptAcceptorName
780 ITOK_TYPE_VENDOR_INFO,
782 GSSEAP_STATE_INITIAL,
784 eapGssSmAcceptVendorInfo,
787 #ifdef GSSEAP_ENABLE_REAUTH
789 ITOK_TYPE_REAUTH_REQ,
790 ITOK_TYPE_REAUTH_RESP,
791 GSSEAP_STATE_INITIAL,
793 eapGssSmAcceptGssReauth,
799 GSSEAP_STATE_INITIAL,
800 SM_ITOK_FLAG_REQUIRED,
801 eapGssSmAcceptIdentity,
806 GSSEAP_STATE_AUTHENTICATE,
807 SM_ITOK_FLAG_REQUIRED,
808 eapGssSmAcceptAuthenticate
813 GSSEAP_STATE_INITIATOR_EXTS,
815 eapGssSmAcceptGssFlags
818 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
820 GSSEAP_STATE_INITIATOR_EXTS,
822 eapGssSmAcceptGssChannelBindings,
825 ITOK_TYPE_INITIATOR_MIC,
827 GSSEAP_STATE_INITIATOR_EXTS,
828 SM_ITOK_FLAG_REQUIRED,
829 eapGssSmAcceptInitiatorMIC,
831 #ifdef GSSEAP_ENABLE_REAUTH
834 ITOK_TYPE_REAUTH_CREDS,
835 GSSEAP_STATE_ACCEPTOR_EXTS,
837 eapGssSmAcceptReauthCreds,
842 ITOK_TYPE_ACCEPTOR_NAME_RESP,
843 GSSEAP_STATE_ACCEPTOR_EXTS,
845 eapGssSmAcceptAcceptorName
849 ITOK_TYPE_ACCEPTOR_MIC,
850 GSSEAP_STATE_ACCEPTOR_EXTS,
852 eapGssSmAcceptAcceptorMIC
857 gssEapAcceptSecContext(OM_uint32 *minor,
860 gss_buffer_t input_token,
861 gss_channel_bindings_t input_chan_bindings,
862 gss_name_t *src_name,
864 gss_buffer_t output_token,
865 OM_uint32 *ret_flags,
867 gss_cred_id_t *delegated_cred_handle)
869 OM_uint32 major, tmpMinor;
871 if (cred == GSS_C_NO_CREDENTIAL) {
872 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
873 major = gssEapAcquireCred(minor,
881 if (GSS_ERROR(major))
889 * Previously we acquired the credential mutex here, but it should not be
890 * necessary as the acceptor does not access any mutable elements of the
894 if (cred->name != GSS_C_NO_NAME) {
895 major = gssEapDuplicateName(minor, cred->name, &ctx->acceptorName);
896 if (GSS_ERROR(major))
900 major = gssEapSmStep(minor,
911 sizeof(eapGssAcceptorSm) / sizeof(eapGssAcceptorSm[0]));
912 if (GSS_ERROR(major))
915 if (mech_type != NULL) {
918 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, mech_type);
919 if (GSS_ERROR(tmpMajor)) {
925 if (ret_flags != NULL)
926 *ret_flags = ctx->gssFlags;
927 if (delegated_cred_handle != NULL)
928 *delegated_cred_handle = GSS_C_NO_CREDENTIAL;
930 if (major == GSS_S_COMPLETE) {
931 if (src_name != NULL && ctx->initiatorName != GSS_C_NO_NAME) {
932 major = gssEapDuplicateName(&tmpMinor, ctx->initiatorName, src_name);
933 if (GSS_ERROR(major))
936 if (time_rec != NULL) {
937 major = gssEapContextTime(&tmpMinor, ctx, time_rec);
938 if (GSS_ERROR(major))
943 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
949 #ifdef GSSEAP_ENABLE_REAUTH
951 acceptReadyKrb(OM_uint32 *minor,
954 const gss_name_t initiator,
960 major = gssEapGlueToMechName(minor, ctx, initiator, &ctx->initiatorName);
961 if (GSS_ERROR(major))
964 major = gssEapReauthComplete(minor, ctx, cred, mech, timeRec);
965 if (GSS_ERROR(major))
969 return GSS_S_COMPLETE;
973 eapGssSmAcceptGssReauth(OM_uint32 *minor,
976 gss_name_t target GSSEAP_UNUSED,
978 OM_uint32 reqFlags GSSEAP_UNUSED,
979 OM_uint32 timeReq GSSEAP_UNUSED,
980 gss_channel_bindings_t chanBindings,
981 gss_buffer_t inputToken,
982 gss_buffer_t outputToken,
985 OM_uint32 major, tmpMinor;
986 gss_name_t krbInitiator = GSS_C_NO_NAME;
987 OM_uint32 gssFlags, timeRec = GSS_C_INDEFINITE;
990 * If we're built with fast reauthentication support, it's valid
991 * for an initiator to send a GSS reauthentication token as its
992 * initial context token, causing us to short-circuit the state
993 * machine and process Kerberos GSS messages instead.
996 ctx->flags |= CTX_FLAG_KRB_REAUTH;
998 major = gssAcceptSecContext(minor,
1009 if (major == GSS_S_COMPLETE) {
1010 major = acceptReadyKrb(minor, ctx, cred,
1011 krbInitiator, mech, timeRec);
1012 if (major == GSS_S_COMPLETE) {
1013 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1015 ctx->gssFlags = gssFlags;
1016 } else if (GSS_ERROR(major) &&
1017 (*smFlags & SM_FLAG_INPUT_TOKEN_CRITICAL) == 0) {
1018 /* pretend reauthentication attempt never happened */
1019 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
1020 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
1021 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
1022 major = GSS_S_CONTINUE_NEEDED;
1025 gssReleaseName(&tmpMinor, &krbInitiator);
1029 #endif /* GSSEAP_ENABLE_REAUTH */
1031 OM_uint32 GSSAPI_CALLCONV
1032 gss_accept_sec_context(OM_uint32 *minor,
1033 gss_ctx_id_t *context_handle,
1035 gss_buffer_t input_token,
1036 gss_channel_bindings_t input_chan_bindings,
1037 gss_name_t *src_name,
1039 gss_buffer_t output_token,
1040 OM_uint32 *ret_flags,
1041 OM_uint32 *time_rec,
1042 gss_cred_id_t *delegated_cred_handle)
1044 OM_uint32 major, tmpMinor;
1045 gss_ctx_id_t ctx = *context_handle;
1049 output_token->length = 0;
1050 output_token->value = NULL;
1052 if (src_name != NULL)
1053 *src_name = GSS_C_NO_NAME;
1055 if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) {
1056 *minor = GSSEAP_TOK_TRUNC;
1057 return GSS_S_DEFECTIVE_TOKEN;
1060 if (ctx == GSS_C_NO_CONTEXT) {
1061 major = gssEapAllocContext(minor, &ctx);
1062 if (GSS_ERROR(major))
1065 *context_handle = ctx;
1068 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1070 major = gssEapAcceptSecContext(minor,
1074 input_chan_bindings,
1080 delegated_cred_handle);
1082 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1084 if (GSS_ERROR(major))
1085 gssEapReleaseContext(&tmpMinor, context_handle);