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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) >= 1);
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 if (KRB_PRINC_LENGTH(krbPrinc) >= 2) {
362 krbPrincComponentToGssBuffer(krbPrinc, 1, &nameBuf);
364 major = gssEapRadiusAddAvp(minor, req,
365 PW_GSS_ACCEPTOR_HOST_NAME,
368 if (GSS_ERROR(major))
371 if (KRB_PRINC_LENGTH(krbPrinc) > 2) {
372 /* Acceptor-Service-Specific */
373 *minor = krbPrincUnparseServiceSpecifics(krbContext,
376 return GSS_S_FAILURE;
378 major = gssEapRadiusAddAvp(minor, req,
379 PW_GSS_ACCEPTOR_SERVICE_SPECIFICS,
382 krbFreeUnparsedName(krbContext, &nameBuf);
383 if (GSS_ERROR(major))
387 krbPrincRealmToGssBuffer(krbPrinc, &nameBuf);
388 if (nameBuf.length != 0) {
389 /* Acceptor-Realm-Name */
390 major = gssEapRadiusAddAvp(minor, req,
391 PW_GSS_ACCEPTOR_REALM_NAME,
394 if (GSS_ERROR(major))
399 return GSS_S_COMPLETE;
403 * Allocate a RadSec handle
406 createRadiusHandle(OM_uint32 *minor,
410 struct gss_eap_acceptor_ctx *actx = &ctx->acceptorCtx;
411 struct rs_error *err;
412 const char *configStanza = "gss-eap";
415 GSSEAP_ASSERT(actx->radContext == NULL);
416 GSSEAP_ASSERT(actx->radConn == NULL);
417 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
419 major = gssEapCreateRadiusContext(minor, cred, &actx->radContext);
420 if (GSS_ERROR(major))
423 if (cred->radiusConfigStanza.value != NULL)
424 configStanza = (const char *)cred->radiusConfigStanza.value;
426 if (rs_conn_create(actx->radContext, &actx->radConn, configStanza) != 0) {
427 err = rs_err_conn_pop(actx->radConn);
428 return gssEapRadiusMapError(minor, err);
431 if (actx->radServer != NULL) {
432 if (rs_conn_select_peer(actx->radConn, actx->radServer) != 0) {
433 err = rs_err_conn_pop(actx->radConn);
434 return gssEapRadiusMapError(minor, err);
439 return GSS_S_COMPLETE;
443 * Process a EAP response from the initiator.
446 eapGssSmAcceptAuthenticate(OM_uint32 *minor,
449 gss_name_t target GSSEAP_UNUSED,
450 gss_OID mech GSSEAP_UNUSED,
451 OM_uint32 reqFlags GSSEAP_UNUSED,
452 OM_uint32 timeReq GSSEAP_UNUSED,
453 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
454 gss_buffer_t inputToken,
455 gss_buffer_t outputToken,
458 OM_uint32 major, tmpMinor;
459 struct rs_connection *rconn;
460 struct rs_request *request = NULL;
461 struct rs_packet *req = NULL, *resp = NULL;
462 int isAccessChallenge;
464 if (ctx->acceptorCtx.radContext == NULL) {
465 /* May be NULL from an imported partial context */
466 major = createRadiusHandle(minor, cred, ctx);
467 if (GSS_ERROR(major))
471 if (isIdentityResponseP(inputToken)) {
472 major = importInitiatorIdentity(minor, ctx, inputToken);
473 if (GSS_ERROR(major))
477 rconn = ctx->acceptorCtx.radConn;
479 if (rs_packet_create_authn_request(rconn, &req, NULL, NULL) != 0) {
480 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
484 major = setInitiatorIdentity(minor, ctx, req);
485 if (GSS_ERROR(major))
488 major = setAcceptorIdentity(minor, ctx, req);
489 if (GSS_ERROR(major))
492 major = gssEapRadiusAddAvp(minor, req,
493 PW_EAP_MESSAGE, 0, inputToken);
494 if (GSS_ERROR(major))
497 if (ctx->acceptorCtx.state.length != 0) {
498 major = gssEapRadiusAddAvp(minor, req, PW_STATE, 0,
499 &ctx->acceptorCtx.state);
500 if (GSS_ERROR(major))
503 gss_release_buffer(&tmpMinor, &ctx->acceptorCtx.state);
506 if (rs_request_create(rconn, &request) != 0) {
507 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
511 rs_request_add_reqpkt(request, req);
514 if (rs_request_send(request, &resp) != 0) {
515 major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
519 GSSEAP_ASSERT(resp != NULL);
521 isAccessChallenge = 0;
523 switch (rs_packet_code(resp)) {
524 case PW_ACCESS_CHALLENGE:
525 isAccessChallenge = 1;
527 case PW_ACCESS_ACCEPT:
529 case PW_ACCESS_REJECT:
530 *minor = GSSEAP_RADIUS_AUTH_FAILURE;
531 major = GSS_S_DEFECTIVE_CREDENTIAL;
535 *minor = GSSEAP_UNKNOWN_RADIUS_CODE;
536 major = GSS_S_FAILURE;
541 major = gssEapRadiusGetAvp(minor, resp, PW_EAP_MESSAGE, 0,
543 if (major == GSS_S_UNAVAILABLE && isAccessChallenge) {
544 *minor = GSSEAP_MISSING_EAP_REQUEST;
545 major = GSS_S_DEFECTIVE_TOKEN;
547 } else if (GSS_ERROR(major))
550 if (isAccessChallenge) {
551 major = gssEapRadiusGetAvp(minor, resp, PW_STATE, 0,
552 &ctx->acceptorCtx.state, TRUE);
553 if (GSS_ERROR(major) && *minor != GSSEAP_NO_SUCH_ATTR)
558 rs_packet_avps(resp, &vps);
560 ctx->acceptorCtx.vps = *vps;
563 major = acceptReadyEap(minor, ctx, cred);
564 if (GSS_ERROR(major))
567 GSSEAP_SM_TRANSITION_NEXT(ctx);
570 major = GSS_S_CONTINUE_NEEDED;
572 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
576 rs_request_destroy(request);
578 rs_packet_destroy(req);
580 rs_packet_destroy(resp);
581 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIATOR_EXTS) {
582 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
584 rs_conn_destroy(ctx->acceptorCtx.radConn);
585 ctx->acceptorCtx.radConn = NULL;
592 eapGssSmAcceptGssFlags(OM_uint32 *minor,
593 gss_cred_id_t cred GSSEAP_UNUSED,
595 gss_name_t target GSSEAP_UNUSED,
596 gss_OID mech GSSEAP_UNUSED,
597 OM_uint32 reqFlags GSSEAP_UNUSED,
598 OM_uint32 timeReq GSSEAP_UNUSED,
599 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
600 gss_buffer_t inputToken,
601 gss_buffer_t outputToken GSSEAP_UNUSED,
602 OM_uint32 *smFlags GSSEAP_UNUSED)
605 OM_uint32 initiatorGssFlags;
607 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
609 if (inputToken->length < 4) {
610 *minor = GSSEAP_TOK_TRUNC;
611 return GSS_S_DEFECTIVE_TOKEN;
614 /* allow flags to grow for future expansion */
615 p = (unsigned char *)inputToken->value + inputToken->length - 4;
617 initiatorGssFlags = load_uint32_be(p);
618 initiatorGssFlags &= GSSEAP_WIRE_FLAGS_MASK;
620 ctx->gssFlags |= initiatorGssFlags;
622 return GSS_S_CONTINUE_NEEDED;
626 eapGssSmAcceptGssChannelBindings(OM_uint32 *minor,
627 gss_cred_id_t cred GSSEAP_UNUSED,
629 gss_name_t target GSSEAP_UNUSED,
630 gss_OID mech GSSEAP_UNUSED,
631 OM_uint32 reqFlags GSSEAP_UNUSED,
632 OM_uint32 timeReq GSSEAP_UNUSED,
633 gss_channel_bindings_t chanBindings,
634 gss_buffer_t inputToken,
635 gss_buffer_t outputToken GSSEAP_UNUSED,
636 OM_uint32 *smFlags GSSEAP_UNUSED)
638 krb5_error_code code;
639 krb5_context krbContext;
642 krb5_boolean valid = FALSE;
644 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
645 chanBindings->application_data.length == 0)
646 return GSS_S_CONTINUE_NEEDED;
648 GSSEAP_KRB_INIT(&krbContext);
650 KRB_DATA_INIT(&data);
652 gssBufferToKrbData(&chanBindings->application_data, &data);
654 KRB_CHECKSUM_INIT(&cksum, ctx->checksumType, inputToken);
656 code = krb5_c_verify_checksum(krbContext, &ctx->rfc3961Key,
657 KEY_USAGE_GSSEAP_CHBIND_MIC,
658 &data, &cksum, &valid);
661 return GSS_S_FAILURE;
664 if (valid == FALSE) {
665 *minor = GSSEAP_BINDINGS_MISMATCH;
666 return GSS_S_BAD_BINDINGS;
669 ctx->flags |= CTX_FLAG_CHANNEL_BINDINGS_VERIFIED;
672 return GSS_S_CONTINUE_NEEDED;
676 eapGssSmAcceptInitiatorMIC(OM_uint32 *minor,
677 gss_cred_id_t cred 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,
684 gss_buffer_t inputToken,
685 gss_buffer_t outputToken GSSEAP_UNUSED,
686 OM_uint32 *smFlags GSSEAP_UNUSED)
691 * The channel binding token is optional, however if the caller indicated
692 * bindings we must raise an error if it was absent.
694 * In the future, we might use a context option to allow the caller to
695 * indicate that missing bindings are acceptable.
697 if (chanBindings != NULL &&
698 chanBindings->application_data.length != 0 &&
699 (ctx->flags & CTX_FLAG_CHANNEL_BINDINGS_VERIFIED) == 0) {
700 *minor = GSSEAP_MISSING_BINDINGS;
701 return GSS_S_BAD_BINDINGS;
704 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
705 if (GSS_ERROR(major))
708 GSSEAP_SM_TRANSITION_NEXT(ctx);
711 return GSS_S_CONTINUE_NEEDED;
714 #ifdef GSSEAP_ENABLE_REAUTH
716 eapGssSmAcceptReauthCreds(OM_uint32 *minor,
719 gss_name_t target GSSEAP_UNUSED,
720 gss_OID mech GSSEAP_UNUSED,
721 OM_uint32 reqFlags GSSEAP_UNUSED,
722 OM_uint32 timeReq GSSEAP_UNUSED,
723 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
724 gss_buffer_t inputToken GSSEAP_UNUSED,
725 gss_buffer_t outputToken,
726 OM_uint32 *smFlags GSSEAP_UNUSED)
731 * If we're built with fast reauthentication enabled, then
732 * fabricate a ticket from the initiator to ourselves.
734 major = gssEapMakeReauthCreds(minor, ctx, cred, outputToken);
735 if (major == GSS_S_UNAVAILABLE)
736 major = GSS_S_COMPLETE;
737 if (major == GSS_S_COMPLETE)
738 major = GSS_S_CONTINUE_NEEDED;
745 eapGssSmAcceptAcceptorMIC(OM_uint32 *minor,
746 gss_cred_id_t cred GSSEAP_UNUSED,
748 gss_name_t target GSSEAP_UNUSED,
749 gss_OID mech GSSEAP_UNUSED,
750 OM_uint32 reqFlags GSSEAP_UNUSED,
751 OM_uint32 timeReq GSSEAP_UNUSED,
752 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
753 gss_buffer_t inputToken GSSEAP_UNUSED,
754 gss_buffer_t outputToken,
759 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
760 if (GSS_ERROR(major))
763 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
766 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
768 return GSS_S_COMPLETE;
771 static struct gss_eap_sm eapGssAcceptorSm[] = {
773 ITOK_TYPE_ACCEPTOR_NAME_REQ,
774 ITOK_TYPE_ACCEPTOR_NAME_RESP,
775 GSSEAP_STATE_INITIAL,
777 eapGssSmAcceptAcceptorName
781 ITOK_TYPE_VENDOR_INFO,
783 GSSEAP_STATE_INITIAL,
785 eapGssSmAcceptVendorInfo,
788 #ifdef GSSEAP_ENABLE_REAUTH
790 ITOK_TYPE_REAUTH_REQ,
791 ITOK_TYPE_REAUTH_RESP,
792 GSSEAP_STATE_INITIAL,
794 eapGssSmAcceptGssReauth,
800 GSSEAP_STATE_INITIAL,
801 SM_ITOK_FLAG_REQUIRED,
802 eapGssSmAcceptIdentity,
807 GSSEAP_STATE_AUTHENTICATE,
808 SM_ITOK_FLAG_REQUIRED,
809 eapGssSmAcceptAuthenticate
814 GSSEAP_STATE_INITIATOR_EXTS,
816 eapGssSmAcceptGssFlags
819 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
821 GSSEAP_STATE_INITIATOR_EXTS,
823 eapGssSmAcceptGssChannelBindings,
826 ITOK_TYPE_INITIATOR_MIC,
828 GSSEAP_STATE_INITIATOR_EXTS,
829 SM_ITOK_FLAG_REQUIRED,
830 eapGssSmAcceptInitiatorMIC,
832 #ifdef GSSEAP_ENABLE_REAUTH
835 ITOK_TYPE_REAUTH_CREDS,
836 GSSEAP_STATE_ACCEPTOR_EXTS,
838 eapGssSmAcceptReauthCreds,
843 ITOK_TYPE_ACCEPTOR_NAME_RESP,
844 GSSEAP_STATE_ACCEPTOR_EXTS,
846 eapGssSmAcceptAcceptorName
850 ITOK_TYPE_ACCEPTOR_MIC,
851 GSSEAP_STATE_ACCEPTOR_EXTS,
853 eapGssSmAcceptAcceptorMIC
858 gssEapAcceptSecContext(OM_uint32 *minor,
861 gss_buffer_t input_token,
862 gss_channel_bindings_t input_chan_bindings,
863 gss_name_t *src_name,
865 gss_buffer_t output_token,
866 OM_uint32 *ret_flags,
868 gss_cred_id_t *delegated_cred_handle)
870 OM_uint32 major, tmpMinor;
872 if (cred == GSS_C_NO_CREDENTIAL) {
873 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
874 major = gssEapAcquireCred(minor,
882 if (GSS_ERROR(major))
890 * Previously we acquired the credential mutex here, but it should not be
891 * necessary as the acceptor does not access any mutable elements of the
895 if (cred->name != GSS_C_NO_NAME) {
896 major = gssEapDuplicateName(minor, cred->name, &ctx->acceptorName);
897 if (GSS_ERROR(major))
901 major = gssEapSmStep(minor,
912 sizeof(eapGssAcceptorSm) / sizeof(eapGssAcceptorSm[0]));
913 if (GSS_ERROR(major))
916 if (mech_type != NULL) {
919 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, mech_type);
920 if (GSS_ERROR(tmpMajor)) {
926 if (ret_flags != NULL)
927 *ret_flags = ctx->gssFlags;
928 if (delegated_cred_handle != NULL)
929 *delegated_cred_handle = GSS_C_NO_CREDENTIAL;
931 if (major == GSS_S_COMPLETE) {
932 if (src_name != NULL && ctx->initiatorName != GSS_C_NO_NAME) {
933 major = gssEapDuplicateName(&tmpMinor, ctx->initiatorName, src_name);
934 if (GSS_ERROR(major))
937 if (time_rec != NULL) {
938 major = gssEapContextTime(&tmpMinor, ctx, time_rec);
939 if (GSS_ERROR(major))
944 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
950 #ifdef GSSEAP_ENABLE_REAUTH
952 acceptReadyKrb(OM_uint32 *minor,
955 const gss_name_t initiator,
961 major = gssEapGlueToMechName(minor, ctx, initiator, &ctx->initiatorName);
962 if (GSS_ERROR(major))
965 major = gssEapReauthComplete(minor, ctx, cred, mech, timeRec);
966 if (GSS_ERROR(major))
970 return GSS_S_COMPLETE;
974 eapGssSmAcceptGssReauth(OM_uint32 *minor,
977 gss_name_t target GSSEAP_UNUSED,
979 OM_uint32 reqFlags GSSEAP_UNUSED,
980 OM_uint32 timeReq GSSEAP_UNUSED,
981 gss_channel_bindings_t chanBindings,
982 gss_buffer_t inputToken,
983 gss_buffer_t outputToken,
986 OM_uint32 major, tmpMinor;
987 gss_name_t krbInitiator = GSS_C_NO_NAME;
988 OM_uint32 gssFlags, timeRec = GSS_C_INDEFINITE;
991 * If we're built with fast reauthentication support, it's valid
992 * for an initiator to send a GSS reauthentication token as its
993 * initial context token, causing us to short-circuit the state
994 * machine and process Kerberos GSS messages instead.
997 ctx->flags |= CTX_FLAG_KRB_REAUTH;
999 major = gssAcceptSecContext(minor,
1010 if (major == GSS_S_COMPLETE) {
1011 major = acceptReadyKrb(minor, ctx, cred,
1012 krbInitiator, mech, timeRec);
1013 if (major == GSS_S_COMPLETE) {
1014 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1016 ctx->gssFlags = gssFlags;
1017 } else if (GSS_ERROR(major) &&
1018 (*smFlags & SM_FLAG_INPUT_TOKEN_CRITICAL) == 0) {
1019 /* pretend reauthentication attempt never happened */
1020 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
1021 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
1022 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
1023 major = GSS_S_CONTINUE_NEEDED;
1026 gssReleaseName(&tmpMinor, &krbInitiator);
1030 #endif /* GSSEAP_ENABLE_REAUTH */
1032 OM_uint32 GSSAPI_CALLCONV
1033 gss_accept_sec_context(OM_uint32 *minor,
1034 gss_ctx_id_t *context_handle,
1036 gss_buffer_t input_token,
1037 gss_channel_bindings_t input_chan_bindings,
1038 gss_name_t *src_name,
1040 gss_buffer_t output_token,
1041 OM_uint32 *ret_flags,
1042 OM_uint32 *time_rec,
1043 gss_cred_id_t *delegated_cred_handle)
1045 OM_uint32 major, tmpMinor;
1046 gss_ctx_id_t ctx = *context_handle;
1050 output_token->length = 0;
1051 output_token->value = NULL;
1053 if (src_name != NULL)
1054 *src_name = GSS_C_NO_NAME;
1056 if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) {
1057 *minor = GSSEAP_TOK_TRUNC;
1058 return GSS_S_DEFECTIVE_TOKEN;
1061 if (ctx == GSS_C_NO_CONTEXT) {
1062 major = gssEapAllocContext(minor, &ctx);
1063 if (GSS_ERROR(major))
1066 *context_handle = ctx;
1069 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1071 major = gssEapAcceptSecContext(minor,
1075 input_chan_bindings,
1081 delegated_cred_handle);
1083 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1085 if (GSS_ERROR(major))
1086 gssEapReleaseContext(&tmpMinor, context_handle);