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.
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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
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25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * Establish a security context on the initiator (client). These functions
38 #include "gssapiP_eap.h"
39 #include "radius/radius.h"
40 #include "util_radius.h"
41 #include "utils/radius_utils.h"
42 #include "openssl/err.h"
43 #ifdef HAVE_MOONSHOT_GET_IDENTITY
44 #include "libmoonshot.h"
47 /* methods allowed for phase1 authentication*/
48 static const struct eap_method_type allowed_eap_method_types[] = {
49 {EAP_VENDOR_IETF, EAP_TYPE_TTLS},
50 {EAP_VENDOR_IETF, EAP_TYPE_NONE}};
53 policyVariableToFlag(enum eapol_bool_var variable)
58 case EAPOL_eapSuccess:
59 flag = CTX_FLAG_EAP_SUCCESS;
61 case EAPOL_eapRestart:
62 flag = CTX_FLAG_EAP_RESTART;
65 flag = CTX_FLAG_EAP_FAIL;
68 flag = CTX_FLAG_EAP_RESP;
71 flag = CTX_FLAG_EAP_NO_RESP;
74 flag = CTX_FLAG_EAP_REQ;
76 case EAPOL_portEnabled:
77 flag = CTX_FLAG_EAP_PORT_ENABLED;
80 flag = CTX_FLAG_EAP_ALT_ACCEPT;
83 flag = CTX_FLAG_EAP_ALT_REJECT;
85 case EAPOL_eapTriggerStart:
86 flag = CTX_FLAG_EAP_TRIGGER_START;
93 static struct eap_peer_config *
94 peerGetConfig(void *ctx)
96 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
98 return &gssCtx->initiatorCtx.eapPeerConfig;
102 peerGetBool(void *data, enum eapol_bool_var variable)
104 gss_ctx_id_t ctx = data;
107 if (ctx == GSS_C_NO_CONTEXT)
110 flag = policyVariableToFlag(variable);
112 return ((ctx->flags & flag) != 0);
116 peerSetBool(void *data, enum eapol_bool_var variable,
119 gss_ctx_id_t ctx = data;
122 if (ctx == GSS_C_NO_CONTEXT)
125 flag = policyVariableToFlag(variable);
130 ctx->flags &= ~(flag);
134 peerGetInt(void *data, enum eapol_int_var variable)
136 gss_ctx_id_t ctx = data;
138 if (ctx == GSS_C_NO_CONTEXT)
141 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
144 case EAPOL_idleWhile:
145 return ctx->initiatorCtx.idleWhile;
153 peerSetInt(void *data, enum eapol_int_var variable,
156 gss_ctx_id_t ctx = data;
158 if (ctx == GSS_C_NO_CONTEXT)
161 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
164 case EAPOL_idleWhile:
165 ctx->initiatorCtx.idleWhile = value;
170 static struct wpabuf *
171 peerGetEapReqData(void *ctx)
173 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
175 return &gssCtx->initiatorCtx.reqData;
179 peerSetConfigBlob(void *ctx GSSEAP_UNUSED,
180 struct wpa_config_blob *blob GSSEAP_UNUSED)
184 static const struct wpa_config_blob *
185 peerGetConfigBlob(void *ctx,
188 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
191 if (strcmp(name, "client-cert") == 0)
192 index = CONFIG_BLOB_CLIENT_CERT;
193 else if (strcmp(name, "private-key") == 0)
194 index = CONFIG_BLOB_PRIVATE_KEY;
195 else if (strcmp(name, "ca-cert") == 0)
196 index = CONFIG_BLOB_CA_CERT;
200 return &gssCtx->initiatorCtx.configBlobs[index];
204 peerNotifyPending(void *ctx GSSEAP_UNUSED)
209 static struct eapol_callbacks gssEapPolicyCallbacks = {
219 NULL, /* eap_param_needed */
220 NULL /* eap_notify_cert */
224 #define CHBIND_SERVICE_NAME_FLAG 0x01
225 #define CHBIND_HOST_NAME_FLAG 0x02
226 #define CHBIND_SERVICE_SPECIFIC_FLAG 0x04
227 #define CHBIND_REALM_NAME_FLAG 0x08
230 peerInitEapChannelBinding(OM_uint32 *minor, gss_ctx_id_t ctx)
232 struct wpabuf *buf = NULL;
233 unsigned int chbindReqFlags = 0;
234 krb5_principal princ = NULL;
235 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
236 OM_uint32 major = GSS_S_COMPLETE;
237 krb5_context krbContext = NULL;
239 /* XXX is this check redundant? */
240 if (ctx->acceptorName == GSS_C_NO_NAME) {
241 major = GSS_S_BAD_NAME;
242 *minor = GSSEAP_NO_ACCEPTOR_NAME;
246 princ = ctx->acceptorName->krbPrincipal;
248 krbPrincComponentToGssBuffer(princ, 0, &nameBuf);
249 if (nameBuf.length > 0) {
250 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_SERVICE_NAME,
252 if (GSS_ERROR(major))
255 chbindReqFlags |= CHBIND_SERVICE_NAME_FLAG;
258 krbPrincComponentToGssBuffer(princ, 1, &nameBuf);
259 if (nameBuf.length > 0) {
260 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_HOST_NAME,
262 if (GSS_ERROR(major))
265 chbindReqFlags |= CHBIND_HOST_NAME_FLAG;
268 GSSEAP_KRB_INIT(&krbContext);
270 *minor = krbPrincUnparseServiceSpecifics(krbContext, princ, &nameBuf);
274 if (nameBuf.length > 0) {
275 major = gssEapRadiusAddAttr(minor, &buf,
276 PW_GSS_ACCEPTOR_SERVICE_SPECIFICS,
278 if (GSS_ERROR(major))
281 chbindReqFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
284 krbFreeUnparsedName(krbContext, &nameBuf);
285 krbPrincRealmToGssBuffer(princ, &nameBuf);
287 if (nameBuf.length > 0) {
288 major = gssEapRadiusAddAttr(minor, &buf,
289 PW_GSS_ACCEPTOR_REALM_NAME,
291 if (GSS_ERROR(major))
294 chbindReqFlags |= CHBIND_REALM_NAME_FLAG;
297 if (chbindReqFlags == 0) {
298 major = GSS_S_BAD_NAME;
299 *minor = GSSEAP_BAD_ACCEPTOR_NAME;
303 ctx->initiatorCtx.chbindData = buf;
304 ctx->initiatorCtx.chbindReqFlags = chbindReqFlags;
308 major = GSS_S_COMPLETE;
312 /*namebuf is freed when used and may be left with a unowned pointer*/
319 peerProcessChbindResponse(void *context, int code, int nsid,
320 u8 *data, size_t len)
323 gss_ctx_id_t ctx = (gss_ctx_id_t )context;
327 u32 chbindRetFlags = 0;
330 if (nsid != CHBIND_NSID_RADIUS)
335 msg = radius_parser_start(data, len);
339 while (radius_parser_parse_tlv(msg, &type, &vendor_id, &vsadata,
340 &vsadata_len) == 0) {
342 case PW_GSS_ACCEPTOR_SERVICE_NAME:
343 chbindRetFlags |= CHBIND_SERVICE_NAME_FLAG;
345 case PW_GSS_ACCEPTOR_HOST_NAME:
346 chbindRetFlags |= CHBIND_HOST_NAME_FLAG;
348 case PW_GSS_ACCEPTOR_SERVICE_SPECIFICS:
349 chbindRetFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
351 case PW_GSS_ACCEPTOR_REALM_NAME:
352 chbindRetFlags |= CHBIND_REALM_NAME_FLAG;
357 radius_parser_finish(msg);
359 if (code == CHBIND_CODE_SUCCESS &&
360 ((chbindRetFlags & ctx->initiatorCtx.chbindReqFlags) == ctx->initiatorCtx.chbindReqFlags)) {
361 ctx->flags |= CTX_FLAG_EAP_CHBIND_ACCEPT;
362 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
363 } /* else log failures? */
366 #ifdef HAVE_MOONSHOT_GET_IDENTITY
367 static int cert_to_byte_array(X509 *cert, unsigned char **bytes)
372 int len = i2d_X509(cert, NULL);
377 p = buf = GSSEAP_MALLOC(len);
382 i2d_X509(cert, &buf);
388 static int sha256(unsigned char *bytes, int len, unsigned char *hash)
391 unsigned int hash_len;
393 EVP_MD_CTX_init(&ctx);
394 if (!EVP_DigestInit_ex(&ctx, EVP_sha256(), NULL)) {
395 printf("sha256(init_sec_context.c): EVP_DigestInit_ex failed: %s",
396 ERR_error_string(ERR_get_error(), NULL));
399 if (!EVP_DigestUpdate(&ctx, bytes, len)) {
400 printf("sha256(init_sec_context.c): EVP_DigestUpdate failed: %s",
401 ERR_error_string(ERR_get_error(), NULL));
404 if (!EVP_DigestFinal(&ctx, hash, &hash_len)) {
405 printf("sha256(init_sec_context.c): EVP_DigestFinal failed: %s",
406 ERR_error_string(ERR_get_error(), NULL));
413 static int peerValidateServerCert(int ok_so_far, X509* cert, void *ca_ctx)
416 unsigned char *cert_bytes = NULL;
418 unsigned char hash[32];
420 MoonshotError *error = NULL;
421 struct eap_peer_config *eap_config = (struct eap_peer_config *) ca_ctx;
422 char *identity = strdup((const char *) eap_config->identity);
424 // Truncate the identity to just the username; make a separate string for the realm.
425 char* at = strchr(identity, '@');
427 realm = strdup(at + 1);
431 cert_len = cert_to_byte_array(cert, &cert_bytes);
432 hash_len = sha256(cert_bytes, cert_len, hash);
433 GSSEAP_FREE(cert_bytes);
435 if (hash_len != 32) {
436 fprintf(stderr, "peerValidateServerCert: Error: hash_len=%d, not 32!\n", hash_len);
440 ok_so_far = moonshot_confirm_ca_certificate(identity, realm, hash, 32, &error);
446 wpa_printf(MSG_INFO, "peerValidateServerCert: Returning %d\n", ok_so_far);
452 peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
455 krb5_context krbContext;
456 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
457 struct wpa_config_blob *configBlobs = ctx->initiatorCtx.configBlobs;
458 gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
459 gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
460 gss_cred_id_t cred = ctx->cred;
462 eapPeerConfig->identity = NULL;
463 eapPeerConfig->identity_len = 0;
464 eapPeerConfig->anonymous_identity = NULL;
465 eapPeerConfig->anonymous_identity_len = 0;
466 eapPeerConfig->password = NULL;
467 eapPeerConfig->password_len = 0;
468 eapPeerConfig->eap_methods = (struct eap_method_type *) allowed_eap_method_types;
470 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
472 GSSEAP_KRB_INIT(&krbContext);
474 eapPeerConfig->fragment_size = 1024;
476 GSSEAP_ASSERT(cred->name != GSS_C_NO_NAME);
478 if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
479 *minor = GSSEAP_BAD_INITIATOR_NAME;
480 return GSS_S_BAD_NAME;
484 major = gssEapDisplayName(minor, cred->name, &identity, NULL);
485 if (GSS_ERROR(major))
488 eapPeerConfig->identity = (unsigned char *)identity.value;
489 eapPeerConfig->identity_len = identity.length;
491 krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
493 /* anonymous_identity */
494 eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
495 if (eapPeerConfig->anonymous_identity == NULL) {
497 return GSS_S_FAILURE;
500 eapPeerConfig->anonymous_identity[0] = '@';
501 memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
502 eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
503 eapPeerConfig->anonymous_identity_len = 1 + realm.length;
506 if ((cred->flags & CRED_FLAG_CERTIFICATE) == 0) {
507 eapPeerConfig->password = (unsigned char *)cred->password.value;
508 eapPeerConfig->password_len = cred->password.length;
512 eapPeerConfig->ca_cert = (unsigned char *)cred->caCertificate.value;
513 eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
514 eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
515 configBlobs[CONFIG_BLOB_CA_CERT].data = cred->caCertificateBlob.value;
516 configBlobs[CONFIG_BLOB_CA_CERT].len = cred->caCertificateBlob.length;
518 /* eap channel binding */
519 if (ctx->initiatorCtx.chbindData != NULL) {
520 struct eap_peer_chbind_config *chbind_config =
521 (struct eap_peer_chbind_config *)GSSEAP_MALLOC(sizeof(struct eap_peer_chbind_config));
522 if (chbind_config == NULL) {
524 return GSS_S_FAILURE;
527 chbind_config->req_data = wpabuf_mhead_u8(ctx->initiatorCtx.chbindData);
528 chbind_config->req_data_len = wpabuf_len(ctx->initiatorCtx.chbindData);
529 chbind_config->nsid = CHBIND_NSID_RADIUS;
530 chbind_config->response_cb = &peerProcessChbindResponse;
531 chbind_config->ctx = ctx;
532 eapPeerConfig->chbind_config = chbind_config;
533 eapPeerConfig->chbind_config_len = 1;
535 eapPeerConfig->chbind_config = NULL;
536 eapPeerConfig->chbind_config_len = 0;
538 if (cred->flags & CRED_FLAG_CERTIFICATE) {
540 * CRED_FLAG_CONFIG_BLOB is an internal flag which will be used in the
541 * future to directly pass certificate and private key data to the
542 * EAP implementation, rather than an indirected string pointer.
544 if (cred->flags & CRED_FLAG_CONFIG_BLOB) {
545 eapPeerConfig->client_cert = (unsigned char *)"blob://client-cert";
546 configBlobs[CONFIG_BLOB_CLIENT_CERT].data = cred->clientCertificate.value;
547 configBlobs[CONFIG_BLOB_CLIENT_CERT].len = cred->clientCertificate.length;
549 eapPeerConfig->client_cert = (unsigned char *)"blob://private-key";
550 configBlobs[CONFIG_BLOB_PRIVATE_KEY].data = cred->clientCertificate.value;
551 configBlobs[CONFIG_BLOB_PRIVATE_KEY].len = cred->privateKey.length;
553 eapPeerConfig->client_cert = (unsigned char *)cred->clientCertificate.value;
554 eapPeerConfig->private_key = (unsigned char *)cred->privateKey.value;
556 eapPeerConfig->private_key_passwd = (char *)cred->password.value;
559 #ifdef HAVE_MOONSHOT_GET_IDENTITY
560 eapPeerConfig->server_cert_cb = peerValidateServerCert;
562 eapPeerConfig->server_cert_ctx = eapPeerConfig;
565 return GSS_S_COMPLETE;
569 peerConfigFree(OM_uint32 *minor,
572 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
574 if (eapPeerConfig->identity != NULL) {
575 GSSEAP_FREE(eapPeerConfig->identity);
576 eapPeerConfig->identity = NULL;
577 eapPeerConfig->identity_len = 0;
580 if (eapPeerConfig->anonymous_identity != NULL) {
581 GSSEAP_FREE(eapPeerConfig->anonymous_identity);
582 eapPeerConfig->anonymous_identity = NULL;
583 eapPeerConfig->anonymous_identity_len = 0;
587 return GSS_S_COMPLETE;
591 * Mark an initiator context as ready for cryptographic operations
594 initReady(OM_uint32 *minor, gss_ctx_id_t ctx)
597 const unsigned char *key;
600 /* Cache encryption type derived from selected mechanism OID */
601 major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
602 if (GSS_ERROR(major))
605 if (!eap_key_available(ctx->initiatorCtx.eap)) {
606 *minor = GSSEAP_KEY_UNAVAILABLE;
607 return GSS_S_UNAVAILABLE;
610 key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
612 if (keyLength < EAP_EMSK_LEN) {
613 *minor = GSSEAP_KEY_TOO_SHORT;
614 return GSS_S_UNAVAILABLE;
617 major = gssEapDeriveRfc3961Key(minor,
618 &key[EAP_EMSK_LEN / 2],
622 if (GSS_ERROR(major))
625 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
627 if (GSS_ERROR(major))
630 major = sequenceInit(minor,
633 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
634 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
636 if (GSS_ERROR(major))
640 return GSS_S_COMPLETE;
644 initBegin(OM_uint32 *minor,
646 gss_const_name_t target,
648 OM_uint32 reqFlags GSSEAP_UNUSED,
650 gss_channel_bindings_t chanBindings GSSEAP_UNUSED)
653 gss_cred_id_t cred = ctx->cred;
655 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
657 if (cred->expiryTime)
658 ctx->expiryTime = cred->expiryTime;
659 else if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
662 ctx->expiryTime = time(NULL) + timeReq;
665 * The credential mutex protects its name, however we need to
666 * explicitly lock the acceptor name (unlikely as it may be
667 * that it has attributes set on it).
669 major = gssEapDuplicateName(minor, cred->name, &ctx->initiatorName);
670 if (GSS_ERROR(major))
673 if (target != GSS_C_NO_NAME) {
674 GSSEAP_MUTEX_LOCK(&((gss_name_t)target)->mutex);
676 major = gssEapDuplicateName(minor, target, &ctx->acceptorName);
677 if (GSS_ERROR(major)) {
678 GSSEAP_MUTEX_LOCK(&((gss_name_t)target)->mutex);
682 GSSEAP_MUTEX_UNLOCK(&((gss_name_t)target)->mutex);
685 major = gssEapCanonicalizeOid(minor,
687 OID_FLAG_NULL_VALID | OID_FLAG_MAP_NULL_TO_DEFAULT_MECH,
688 &ctx->mechanismUsed);
689 if (GSS_ERROR(major))
692 /* If credentials were provided, check they're usable with this mech */
693 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
694 *minor = GSSEAP_CRED_MECH_MISMATCH;
695 return GSS_S_BAD_MECH;
699 return GSS_S_COMPLETE;
703 eapGssSmInitError(OM_uint32 *minor,
704 gss_cred_id_t cred GSSEAP_UNUSED,
705 gss_ctx_id_t ctx GSSEAP_UNUSED,
706 gss_const_name_t target GSSEAP_UNUSED,
707 gss_OID mech GSSEAP_UNUSED,
708 OM_uint32 reqFlags GSSEAP_UNUSED,
709 OM_uint32 timeReq GSSEAP_UNUSED,
710 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
711 gss_buffer_t inputToken,
712 gss_buffer_t outputToken GSSEAP_UNUSED,
713 OM_uint32 *smFlags GSSEAP_UNUSED)
718 if (inputToken->length < 8) {
719 *minor = GSSEAP_TOK_TRUNC;
720 return GSS_S_DEFECTIVE_TOKEN;
723 p = (unsigned char *)inputToken->value;
725 major = load_uint32_be(&p[0]);
726 *minor = load_uint32_be(&p[4]);
727 if ((*minor >0) && (*minor < 128))
728 * minor += ERROR_TABLE_BASE_eapg;
731 if (!GSS_ERROR(major) || !IS_WIRE_ERROR(*minor)) {
732 major = GSS_S_FAILURE;
733 *minor = GSSEAP_BAD_ERROR_TOKEN;
736 GSSEAP_ASSERT(GSS_ERROR(major));
741 #ifdef GSSEAP_ENABLE_REAUTH
743 eapGssSmInitGssReauth(OM_uint32 *minor,
746 gss_const_name_t target,
747 gss_OID mech GSSEAP_UNUSED,
750 gss_channel_bindings_t chanBindings,
751 gss_buffer_t inputToken,
752 gss_buffer_t outputToken,
753 OM_uint32 *smFlags GSSEAP_UNUSED)
755 OM_uint32 major, tmpMinor;
756 gss_name_t mechTarget = GSS_C_NO_NAME;
757 gss_OID actualMech = GSS_C_NO_OID;
758 OM_uint32 gssFlags, timeRec;
761 * Here we use the passed in credential handle because the resolved
762 * context credential does not currently have the reauth creds.
764 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
765 if (!gssEapCanReauthP(cred, (gss_name_t) target, timeReq))
766 return GSS_S_CONTINUE_NEEDED;
768 ctx->flags |= CTX_FLAG_KRB_REAUTH;
769 } else if ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
770 major = GSS_S_DEFECTIVE_TOKEN;
771 *minor = GSSEAP_WRONG_ITOK;
775 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
777 major = gssEapMechToGlueName(minor, (gss_name_t) target, &mechTarget);
778 if (GSS_ERROR(major))
781 major = gssInitSecContext(minor,
785 (gss_OID)gss_mech_krb5,
786 reqFlags | GSS_C_MUTUAL_FLAG,
794 if (GSS_ERROR(major))
797 ctx->gssFlags = gssFlags;
799 if (major == GSS_S_COMPLETE) {
800 GSSEAP_ASSERT(GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE);
802 major = gssEapReauthComplete(minor, ctx, cred, actualMech, timeRec);
803 if (GSS_ERROR(major))
805 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
807 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_REAUTHENTICATE);
811 gssReleaseName(&tmpMinor, &mechTarget);
815 #endif /* GSSEAP_ENABLE_REAUTH */
819 eapGssSmInitVendorInfo(OM_uint32 *minor,
820 gss_cred_id_t cred GSSEAP_UNUSED,
821 gss_ctx_id_t ctx GSSEAP_UNUSED,
822 gss_const_name_t target GSSEAP_UNUSED,
823 gss_OID mech GSSEAP_UNUSED,
824 OM_uint32 reqFlags GSSEAP_UNUSED,
825 OM_uint32 timeReq GSSEAP_UNUSED,
826 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
827 gss_buffer_t inputToken GSSEAP_UNUSED,
828 gss_buffer_t outputToken,
829 OM_uint32 *smFlags GSSEAP_UNUSED)
833 major = makeStringBuffer(minor, "JANET(UK)", outputToken);
834 if (GSS_ERROR(major))
837 return GSS_S_CONTINUE_NEEDED;
842 eapGssSmInitAcceptorName(OM_uint32 *minor,
843 gss_cred_id_t cred GSSEAP_UNUSED,
845 gss_const_name_t target GSSEAP_UNUSED,
846 gss_OID mech GSSEAP_UNUSED,
847 OM_uint32 reqFlags GSSEAP_UNUSED,
848 OM_uint32 timeReq GSSEAP_UNUSED,
849 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
850 gss_buffer_t inputToken GSSEAP_UNUSED,
851 gss_buffer_t outputToken,
852 OM_uint32 *smFlags GSSEAP_UNUSED)
856 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL &&
857 ctx->acceptorName != GSS_C_NO_NAME) {
859 /* Send desired target name to acceptor */
860 major = gssEapDisplayName(minor, ctx->acceptorName,
862 if (GSS_ERROR(major))
864 } else if (inputToken != GSS_C_NO_BUFFER) {
869 /* Accept target name hint from acceptor or verify acceptor */
870 major = gssEapImportName(minor, inputToken,
874 if (GSS_ERROR(major))
877 if (ctx->acceptorName != GSS_C_NO_NAME) {
878 /* verify name hint matched asserted acceptor name */
879 major = gssEapCompareName(minor,
882 COMPARE_NAME_FLAG_IGNORE_EMPTY_REALMS,
884 if (GSS_ERROR(major)) {
885 gssEapReleaseName(&tmpMinor, &nameHint);
889 gssEapReleaseName(&tmpMinor, &nameHint);
892 *minor = GSSEAP_WRONG_ACCEPTOR_NAME;
893 return GSS_S_DEFECTIVE_TOKEN;
895 } else { /* acceptor name is no_name */
896 /* accept acceptor name hint */
897 ctx->acceptorName = nameHint;
898 nameHint = GSS_C_NO_NAME;
904 * Currently, other parts of the code assume that the acceptor name
905 * is available, hence this check.
907 if (ctx->acceptorName == GSS_C_NO_NAME) {
908 *minor = GSSEAP_NO_ACCEPTOR_NAME;
909 return GSS_S_FAILURE;
913 * Generate channel binding data
915 if (ctx->initiatorCtx.chbindData == NULL) {
916 major = peerInitEapChannelBinding(minor, ctx);
917 if (GSS_ERROR(major))
921 return GSS_S_CONTINUE_NEEDED;
925 eapGssSmInitIdentity(OM_uint32 *minor,
926 gss_cred_id_t cred GSSEAP_UNUSED,
928 gss_const_name_t target GSSEAP_UNUSED,
929 gss_OID mech GSSEAP_UNUSED,
930 OM_uint32 reqFlags GSSEAP_UNUSED,
931 OM_uint32 timeReq GSSEAP_UNUSED,
932 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
933 gss_buffer_t inputToken GSSEAP_UNUSED,
934 gss_buffer_t outputToken GSSEAP_UNUSED,
937 struct eap_config eapConfig;
938 memset(&eapConfig, 0, sizeof(eapConfig));
939 eapConfig.cert_in_cb = 1;
941 #ifdef GSSEAP_ENABLE_REAUTH
942 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
945 /* server didn't support reauthentication, sent EAP request */
946 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
947 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
948 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
951 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
953 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
954 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
956 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
957 &gssEapPolicyCallbacks,
960 if (ctx->initiatorCtx.eap == NULL) {
961 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
962 return GSS_S_FAILURE;
965 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
967 /* poke EAP state machine */
968 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
969 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
970 return GSS_S_FAILURE;
973 GSSEAP_SM_TRANSITION_NEXT(ctx);
977 return GSS_S_CONTINUE_NEEDED;
981 eapGssSmInitAuthenticate(OM_uint32 *minor,
982 gss_cred_id_t cred GSSEAP_UNUSED,
984 gss_const_name_t target GSSEAP_UNUSED,
985 gss_OID mech GSSEAP_UNUSED,
986 OM_uint32 reqFlags GSSEAP_UNUSED,
987 OM_uint32 timeReq GSSEAP_UNUSED,
988 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
989 gss_buffer_t inputToken GSSEAP_UNUSED,
990 gss_buffer_t outputToken,
995 struct wpabuf *resp = NULL;
999 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
1001 major = peerConfigInit(minor, ctx);
1002 if (GSS_ERROR(major))
1005 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
1006 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
1008 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
1010 wpabuf_set(&ctx->initiatorCtx.reqData,
1011 inputToken->value, inputToken->length);
1013 major = GSS_S_CONTINUE_NEEDED;
1015 eap_peer_sm_step(ctx->initiatorCtx.eap);
1016 if (ctx->flags & CTX_FLAG_EAP_RESP) {
1017 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
1019 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
1020 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
1021 major = initReady(minor, ctx);
1022 if (GSS_ERROR(major))
1025 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
1026 major = GSS_S_CONTINUE_NEEDED;
1027 GSSEAP_SM_TRANSITION_NEXT(ctx);
1028 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
1029 major = GSS_S_DEFECTIVE_CREDENTIAL;
1030 *minor = GSSEAP_PEER_AUTH_FAILURE;
1032 major = GSS_S_DEFECTIVE_TOKEN;
1033 *minor = GSSEAP_PEER_BAD_MESSAGE;
1039 gss_buffer_desc respBuf;
1041 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
1043 respBuf.length = wpabuf_len(resp);
1044 respBuf.value = (void *)wpabuf_head(resp);
1046 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
1047 if (GSS_ERROR(tmpMajor)) {
1052 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1055 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
1056 peerConfigFree(&tmpMinor, ctx);
1062 eapGssSmInitGssFlags(OM_uint32 *minor,
1063 gss_cred_id_t cred GSSEAP_UNUSED,
1065 gss_const_name_t target GSSEAP_UNUSED,
1066 gss_OID mech GSSEAP_UNUSED,
1067 OM_uint32 reqFlags GSSEAP_UNUSED,
1068 OM_uint32 timeReq GSSEAP_UNUSED,
1069 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1070 gss_buffer_t inputToken GSSEAP_UNUSED,
1071 gss_buffer_t outputToken,
1072 OM_uint32 *smFlags GSSEAP_UNUSED)
1074 unsigned char wireFlags[4];
1075 gss_buffer_desc flagsBuf;
1078 * As a temporary measure, force mutual authentication until channel binding is
1079 * more widely deployed.
1081 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
1082 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
1084 flagsBuf.length = sizeof(wireFlags);
1085 flagsBuf.value = wireFlags;
1087 return duplicateBuffer(minor, &flagsBuf, outputToken);
1091 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
1092 gss_cred_id_t cred GSSEAP_UNUSED,
1094 gss_const_name_t target GSSEAP_UNUSED,
1095 gss_OID mech GSSEAP_UNUSED,
1096 OM_uint32 reqFlags GSSEAP_UNUSED,
1097 OM_uint32 timeReq GSSEAP_UNUSED,
1098 gss_channel_bindings_t chanBindings,
1099 gss_buffer_t inputToken GSSEAP_UNUSED,
1100 gss_buffer_t outputToken,
1104 krb5_error_code code;
1105 krb5_context krbContext;
1107 krb5_checksum cksum;
1108 gss_buffer_desc cksumBuffer;
1109 #ifdef HAVE_HEIMDAL_VERSION
1110 krb5_crypto krbCrypto;
1113 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
1114 chanBindings->application_data.length == 0)
1115 return GSS_S_CONTINUE_NEEDED;
1117 GSSEAP_KRB_INIT(&krbContext);
1119 KRB_DATA_INIT(&data);
1121 gssBufferToKrbData(&chanBindings->application_data, &data);
1123 #ifdef HAVE_HEIMDAL_VERSION
1124 code = krb5_crypto_init(krbContext, &ctx->rfc3961Key, 0, &krbCrypto);
1127 return GSS_S_FAILURE;
1130 code = krb5_create_checksum(krbContext, krbCrypto,
1131 KEY_USAGE_GSSEAP_CHBIND_MIC,
1133 data.data, data.length,
1135 krb5_crypto_destroy(krbContext, krbCrypto);
1137 code = krb5_c_make_checksum(krbContext, ctx->checksumType,
1139 KEY_USAGE_GSSEAP_CHBIND_MIC,
1141 #endif /* HAVE_HEIMDAL_VERSION */
1144 return GSS_S_FAILURE;
1147 cksumBuffer.length = KRB_CHECKSUM_LENGTH(&cksum);
1148 cksumBuffer.value = KRB_CHECKSUM_DATA(&cksum);
1150 major = duplicateBuffer(minor, &cksumBuffer, outputToken);
1151 if (GSS_ERROR(major)) {
1152 KRB_CHECKSUM_FREE(krbContext, &cksum);
1157 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1159 KRB_CHECKSUM_FREE(krbContext, &cksum);
1161 return GSS_S_CONTINUE_NEEDED;
1165 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
1166 gss_cred_id_t cred GSSEAP_UNUSED,
1168 gss_const_name_t target GSSEAP_UNUSED,
1169 gss_OID mech GSSEAP_UNUSED,
1170 OM_uint32 reqFlags GSSEAP_UNUSED,
1171 OM_uint32 timeReq GSSEAP_UNUSED,
1172 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1173 gss_buffer_t inputToken GSSEAP_UNUSED,
1174 gss_buffer_t outputToken,
1179 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
1180 if (GSS_ERROR(major))
1183 GSSEAP_SM_TRANSITION_NEXT(ctx);
1186 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1188 return GSS_S_CONTINUE_NEEDED;
1191 #ifdef GSSEAP_ENABLE_REAUTH
1193 eapGssSmInitReauthCreds(OM_uint32 *minor,
1196 gss_const_name_t target GSSEAP_UNUSED,
1197 gss_OID mech GSSEAP_UNUSED,
1198 OM_uint32 reqFlags GSSEAP_UNUSED,
1199 OM_uint32 timeReq GSSEAP_UNUSED,
1200 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1201 gss_buffer_t inputToken,
1202 gss_buffer_t outputToken GSSEAP_UNUSED,
1203 OM_uint32 *smFlags GSSEAP_UNUSED)
1207 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
1208 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
1209 if (GSS_ERROR(major))
1214 return GSS_S_CONTINUE_NEEDED;
1216 #endif /* GSSEAP_ENABLE_REAUTH */
1219 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
1220 gss_cred_id_t cred GSSEAP_UNUSED,
1222 gss_const_name_t target GSSEAP_UNUSED,
1223 gss_OID mech GSSEAP_UNUSED,
1224 OM_uint32 reqFlags GSSEAP_UNUSED,
1225 OM_uint32 timeReq GSSEAP_UNUSED,
1226 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1227 gss_buffer_t inputToken,
1228 gss_buffer_t outputToken GSSEAP_UNUSED,
1229 OM_uint32 *smFlags GSSEAP_UNUSED)
1233 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
1234 if (GSS_ERROR(major))
1237 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1241 return GSS_S_COMPLETE;
1244 static struct gss_eap_sm eapGssInitiatorSm[] = {
1246 ITOK_TYPE_CONTEXT_ERR,
1248 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
1253 ITOK_TYPE_ACCEPTOR_NAME_RESP,
1254 ITOK_TYPE_ACCEPTOR_NAME_REQ,
1255 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE |
1256 GSSEAP_STATE_ACCEPTOR_EXTS,
1258 eapGssSmInitAcceptorName
1263 ITOK_TYPE_VENDOR_INFO,
1264 GSSEAP_STATE_INITIAL,
1266 eapGssSmInitVendorInfo
1269 #ifdef GSSEAP_ENABLE_REAUTH
1271 ITOK_TYPE_REAUTH_RESP,
1272 ITOK_TYPE_REAUTH_REQ,
1273 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
1275 eapGssSmInitGssReauth
1281 #ifdef GSSEAP_ENABLE_REAUTH
1282 GSSEAP_STATE_REAUTHENTICATE |
1284 GSSEAP_STATE_INITIAL,
1285 SM_ITOK_FLAG_REQUIRED,
1286 eapGssSmInitIdentity
1291 GSSEAP_STATE_AUTHENTICATE,
1292 SM_ITOK_FLAG_REQUIRED,
1293 eapGssSmInitAuthenticate
1297 ITOK_TYPE_GSS_FLAGS,
1298 GSSEAP_STATE_INITIATOR_EXTS,
1300 eapGssSmInitGssFlags
1304 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
1305 GSSEAP_STATE_INITIATOR_EXTS,
1307 eapGssSmInitGssChannelBindings
1311 ITOK_TYPE_INITIATOR_MIC,
1312 GSSEAP_STATE_INITIATOR_EXTS,
1313 SM_ITOK_FLAG_REQUIRED,
1314 eapGssSmInitInitiatorMIC
1316 #ifdef GSSEAP_ENABLE_REAUTH
1318 ITOK_TYPE_REAUTH_CREDS,
1320 GSSEAP_STATE_ACCEPTOR_EXTS,
1322 eapGssSmInitReauthCreds
1325 /* other extensions go here */
1327 ITOK_TYPE_ACCEPTOR_MIC,
1329 GSSEAP_STATE_ACCEPTOR_EXTS,
1330 SM_ITOK_FLAG_REQUIRED,
1331 eapGssSmInitAcceptorMIC
1336 gssEapInitSecContext(OM_uint32 *minor,
1339 gss_const_name_t target_name,
1341 OM_uint32 req_flags,
1343 gss_channel_bindings_t input_chan_bindings,
1344 gss_buffer_t input_token,
1345 gss_OID *actual_mech_type,
1346 gss_buffer_t output_token,
1347 OM_uint32 *ret_flags,
1348 OM_uint32 *time_rec)
1350 OM_uint32 major, tmpMinor;
1351 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1354 * XXX is acquiring the credential lock here necessary? The password is
1355 * mutable but the contract could specify that this is not updated whilst
1356 * a context is being initialized.
1358 if (cred != GSS_C_NO_CREDENTIAL)
1359 GSSEAP_MUTEX_LOCK(&cred->mutex);
1361 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1362 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1363 if (GSS_ERROR(major))
1366 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1369 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1371 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1372 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1374 if (initialContextToken) {
1375 major = initBegin(minor, ctx, target_name, mech_type,
1376 req_flags, time_req, input_chan_bindings);
1377 if (GSS_ERROR(major))
1381 major = gssEapSmStep(minor,
1388 input_chan_bindings,
1392 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1393 if (GSS_ERROR(major))
1396 if (actual_mech_type != NULL) {
1399 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1400 if (GSS_ERROR(tmpMajor)) {
1407 if (ret_flags != NULL)
1408 *ret_flags = ctx->gssFlags;
1410 if (time_rec != NULL)
1411 gssEapContextTime(&tmpMinor, ctx, time_rec);
1413 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1416 if (cred != GSS_C_NO_CREDENTIAL)
1417 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1418 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1419 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1424 OM_uint32 GSSAPI_CALLCONV
1425 gss_init_sec_context(OM_uint32 *minor,
1426 #ifdef HAVE_HEIMDAL_VERSION
1427 gss_const_cred_id_t cred,
1431 gss_ctx_id_t *context_handle,
1432 #ifdef HAVE_HEIMDAL_VERSION
1433 gss_const_name_t target_name,
1435 gss_name_t target_name,
1438 OM_uint32 req_flags,
1440 gss_channel_bindings_t input_chan_bindings,
1441 gss_buffer_t input_token,
1442 gss_OID *actual_mech_type,
1443 gss_buffer_t output_token,
1444 OM_uint32 *ret_flags,
1445 OM_uint32 *time_rec)
1447 OM_uint32 major, tmpMinor;
1448 gss_ctx_id_t ctx = *context_handle;
1452 output_token->length = 0;
1453 output_token->value = NULL;
1455 if (ctx == GSS_C_NO_CONTEXT) {
1456 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1457 *minor = GSSEAP_WRONG_SIZE;
1458 return GSS_S_DEFECTIVE_TOKEN;
1461 major = gssEapAllocContext(minor, &ctx);
1462 if (GSS_ERROR(major))
1465 ctx->flags |= CTX_FLAG_INITIATOR;
1467 *context_handle = ctx;
1470 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1472 major = gssEapInitSecContext(minor,
1473 (gss_cred_id_t)cred,
1479 input_chan_bindings,
1486 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1488 if (GSS_ERROR(major))
1489 gssEapReleaseContext(&tmpMinor, context_handle);
1491 gssEapTraceStatus("gss_init_sec_context", major, *minor);