2 * Copyright (c) 2011, JANET(UK)
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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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20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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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 #include "libmoonshot.h"
45 /* methods allowed for phase1 authentication*/
46 static const struct eap_method_type allowed_eap_method_types[] = {
47 {EAP_VENDOR_IETF, EAP_TYPE_TTLS},
48 {EAP_VENDOR_IETF, EAP_TYPE_NONE}};
51 policyVariableToFlag(enum eapol_bool_var variable)
56 case EAPOL_eapSuccess:
57 flag = CTX_FLAG_EAP_SUCCESS;
59 case EAPOL_eapRestart:
60 flag = CTX_FLAG_EAP_RESTART;
63 flag = CTX_FLAG_EAP_FAIL;
66 flag = CTX_FLAG_EAP_RESP;
69 flag = CTX_FLAG_EAP_NO_RESP;
72 flag = CTX_FLAG_EAP_REQ;
74 case EAPOL_portEnabled:
75 flag = CTX_FLAG_EAP_PORT_ENABLED;
78 flag = CTX_FLAG_EAP_ALT_ACCEPT;
81 flag = CTX_FLAG_EAP_ALT_REJECT;
83 case EAPOL_eapTriggerStart:
84 flag = CTX_FLAG_EAP_TRIGGER_START;
91 static struct eap_peer_config *
92 peerGetConfig(void *ctx)
94 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
96 return &gssCtx->initiatorCtx.eapPeerConfig;
100 peerGetBool(void *data, enum eapol_bool_var variable)
102 gss_ctx_id_t ctx = data;
105 if (ctx == GSS_C_NO_CONTEXT)
108 flag = policyVariableToFlag(variable);
110 return ((ctx->flags & flag) != 0);
114 peerSetBool(void *data, enum eapol_bool_var variable,
117 gss_ctx_id_t ctx = data;
120 if (ctx == GSS_C_NO_CONTEXT)
123 flag = policyVariableToFlag(variable);
128 ctx->flags &= ~(flag);
132 peerGetInt(void *data, enum eapol_int_var variable)
134 gss_ctx_id_t ctx = data;
136 if (ctx == GSS_C_NO_CONTEXT)
139 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
142 case EAPOL_idleWhile:
143 return ctx->initiatorCtx.idleWhile;
151 peerSetInt(void *data, enum eapol_int_var variable,
154 gss_ctx_id_t ctx = data;
156 if (ctx == GSS_C_NO_CONTEXT)
159 GSSEAP_ASSERT(CTX_IS_INITIATOR(ctx));
162 case EAPOL_idleWhile:
163 ctx->initiatorCtx.idleWhile = value;
168 static struct wpabuf *
169 peerGetEapReqData(void *ctx)
171 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
173 return &gssCtx->initiatorCtx.reqData;
177 peerSetConfigBlob(void *ctx GSSEAP_UNUSED,
178 struct wpa_config_blob *blob GSSEAP_UNUSED)
182 static const struct wpa_config_blob *
183 peerGetConfigBlob(void *ctx,
186 gss_ctx_id_t gssCtx = (gss_ctx_id_t)ctx;
189 if (strcmp(name, "client-cert") == 0)
190 index = CONFIG_BLOB_CLIENT_CERT;
191 else if (strcmp(name, "private-key") == 0)
192 index = CONFIG_BLOB_PRIVATE_KEY;
193 else if (strcmp(name, "ca-cert") == 0)
194 index = CONFIG_BLOB_CA_CERT;
198 return &gssCtx->initiatorCtx.configBlobs[index];
202 peerNotifyPending(void *ctx GSSEAP_UNUSED)
206 static void peerNotifyCert(void *ctx GSSEAP_UNUSED,
208 const char *subject GSSEAP_UNUSED,
209 const char *altsubject[] GSSEAP_UNUSED,
210 int num_altsubject GSSEAP_UNUSED,
211 const char *cert_hash GSSEAP_UNUSED,
212 const struct wpabuf *cert GSSEAP_UNUSED)
214 printf("peerNotifyCert: depth=%d; hash=%s (%p)\n", depth, cert_hash, cert_hash);
218 static struct eapol_callbacks gssEapPolicyCallbacks = {
228 NULL, /* eap_param_needed */
233 #define CHBIND_SERVICE_NAME_FLAG 0x01
234 #define CHBIND_HOST_NAME_FLAG 0x02
235 #define CHBIND_SERVICE_SPECIFIC_FLAG 0x04
236 #define CHBIND_REALM_NAME_FLAG 0x08
239 peerInitEapChannelBinding(OM_uint32 *minor, gss_ctx_id_t ctx)
241 struct wpabuf *buf = NULL;
242 unsigned int chbindReqFlags = 0;
243 krb5_principal princ = NULL;
244 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
245 OM_uint32 major = GSS_S_COMPLETE;
246 krb5_context krbContext = NULL;
248 /* XXX is this check redundant? */
249 if (ctx->acceptorName == GSS_C_NO_NAME) {
250 major = GSS_S_BAD_NAME;
251 *minor = GSSEAP_NO_ACCEPTOR_NAME;
255 princ = ctx->acceptorName->krbPrincipal;
257 krbPrincComponentToGssBuffer(princ, 0, &nameBuf);
258 if (nameBuf.length > 0) {
259 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_SERVICE_NAME,
261 if (GSS_ERROR(major))
264 chbindReqFlags |= CHBIND_SERVICE_NAME_FLAG;
267 krbPrincComponentToGssBuffer(princ, 1, &nameBuf);
268 if (nameBuf.length > 0) {
269 major = gssEapRadiusAddAttr(minor, &buf, PW_GSS_ACCEPTOR_HOST_NAME,
271 if (GSS_ERROR(major))
274 chbindReqFlags |= CHBIND_HOST_NAME_FLAG;
277 GSSEAP_KRB_INIT(&krbContext);
279 *minor = krbPrincUnparseServiceSpecifics(krbContext, princ, &nameBuf);
283 if (nameBuf.length > 0) {
284 major = gssEapRadiusAddAttr(minor, &buf,
285 PW_GSS_ACCEPTOR_SERVICE_SPECIFICS,
287 if (GSS_ERROR(major))
290 chbindReqFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
293 krbFreeUnparsedName(krbContext, &nameBuf);
294 krbPrincRealmToGssBuffer(princ, &nameBuf);
296 if (nameBuf.length > 0) {
297 major = gssEapRadiusAddAttr(minor, &buf,
298 PW_GSS_ACCEPTOR_REALM_NAME,
300 if (GSS_ERROR(major))
303 chbindReqFlags |= CHBIND_REALM_NAME_FLAG;
306 if (chbindReqFlags == 0) {
307 major = GSS_S_BAD_NAME;
308 *minor = GSSEAP_BAD_ACCEPTOR_NAME;
312 ctx->initiatorCtx.chbindData = buf;
313 ctx->initiatorCtx.chbindReqFlags = chbindReqFlags;
317 major = GSS_S_COMPLETE;
321 /*namebuf is freed when used and may be left with a unowned pointer*/
328 peerProcessChbindResponse(void *context, int code, int nsid,
329 u8 *data, size_t len)
332 gss_ctx_id_t ctx = (gss_ctx_id_t )context;
336 u32 chbindRetFlags = 0;
339 if (nsid != CHBIND_NSID_RADIUS)
344 msg = radius_parser_start(data, len);
348 while (radius_parser_parse_tlv(msg, &type, &vendor_id, &vsadata,
349 &vsadata_len) == 0) {
351 case PW_GSS_ACCEPTOR_SERVICE_NAME:
352 chbindRetFlags |= CHBIND_SERVICE_NAME_FLAG;
354 case PW_GSS_ACCEPTOR_HOST_NAME:
355 chbindRetFlags |= CHBIND_HOST_NAME_FLAG;
357 case PW_GSS_ACCEPTOR_SERVICE_SPECIFICS:
358 chbindRetFlags |= CHBIND_SERVICE_SPECIFIC_FLAG;
360 case PW_GSS_ACCEPTOR_REALM_NAME:
361 chbindRetFlags |= CHBIND_REALM_NAME_FLAG;
366 radius_parser_finish(msg);
368 if (code == CHBIND_CODE_SUCCESS &&
369 ((chbindRetFlags & ctx->initiatorCtx.chbindReqFlags) == ctx->initiatorCtx.chbindReqFlags)) {
370 ctx->flags |= CTX_FLAG_EAP_CHBIND_ACCEPT;
371 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
372 } /* else log failures? */
375 static int cert_to_byte_array(X509 *cert, unsigned char **bytes)
380 int len = i2d_X509(cert, NULL);
385 p = buf = GSSEAP_MALLOC(len);
390 i2d_X509(cert, &buf);
396 static int sha256(unsigned char *bytes, int len, unsigned char *hash)
399 unsigned int hash_len;
401 EVP_MD_CTX_init(&ctx);
402 if (!EVP_DigestInit_ex(&ctx, EVP_sha256(), NULL)) {
403 printf("sha256(init_sec_context.c): EVP_DigestInit_ex failed: %s",
404 ERR_error_string(ERR_get_error(), NULL));
407 if (!EVP_DigestUpdate(&ctx, bytes, len)) {
408 printf("sha256(init_sec_context.c): EVP_DigestUpdate failed: %s",
409 ERR_error_string(ERR_get_error(), NULL));
412 if (!EVP_DigestFinal(&ctx, hash, &hash_len)) {
413 printf("sha256(init_sec_context.c): EVP_DigestFinal failed: %s",
414 ERR_error_string(ERR_get_error(), NULL));
422 static int peerValidateServer(int ok_so_far, X509* cert, void *ca_ctx)
424 const char *realm = NULL;
425 unsigned char *cert_bytes = NULL;
427 unsigned char hash[32];
429 MoonshotError *error = NULL;
430 struct eap_peer_config *eap_config = (struct eap_peer_config *) ca_ctx;
431 char *identity = strdup((const char *) eap_config->identity);
433 // Truncate the identity to just the username
434 char* at = strchr(identity, '@');
439 cert_len = cert_to_byte_array(cert, &cert_bytes);
440 hash_len = sha256(cert_bytes, cert_len, hash);
441 GSSEAP_FREE(cert_bytes);
443 if (hash_len != 32) {
444 printf("peerValidateServer: Error: hash_len=%d, not 32!\n", hash_len);
448 /* This is ugly, but it works -- anonymous_identity is '@' + realm
449 * (see peerConfigInit)
451 realm = ((char *) eap_config->anonymous_identity) + 1;
453 ok_so_far = moonshot_confirm_ca_certificate(identity, realm, hash, 32, &error);
456 printf("peerValidateServer: Returning %d\n", ok_so_far);
462 peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
465 krb5_context krbContext;
466 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
467 struct wpa_config_blob *configBlobs = ctx->initiatorCtx.configBlobs;
468 gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
469 gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
470 gss_cred_id_t cred = ctx->cred;
472 eapPeerConfig->identity = NULL;
473 eapPeerConfig->identity_len = 0;
474 eapPeerConfig->anonymous_identity = NULL;
475 eapPeerConfig->anonymous_identity_len = 0;
476 eapPeerConfig->password = NULL;
477 eapPeerConfig->password_len = 0;
478 eapPeerConfig->eap_methods = (struct eap_method_type *) allowed_eap_method_types;
480 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
482 GSSEAP_KRB_INIT(&krbContext);
484 eapPeerConfig->fragment_size = 1024;
486 GSSEAP_ASSERT(cred->name != GSS_C_NO_NAME);
488 if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
489 *minor = GSSEAP_BAD_INITIATOR_NAME;
490 return GSS_S_BAD_NAME;
494 major = gssEapDisplayName(minor, cred->name, &identity, NULL);
495 if (GSS_ERROR(major))
498 eapPeerConfig->identity = (unsigned char *)identity.value;
499 eapPeerConfig->identity_len = identity.length;
501 krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
503 /* anonymous_identity */
504 eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
505 if (eapPeerConfig->anonymous_identity == NULL) {
507 return GSS_S_FAILURE;
510 eapPeerConfig->anonymous_identity[0] = '@';
511 memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
512 eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
513 eapPeerConfig->anonymous_identity_len = 1 + realm.length;
516 if ((cred->flags & CRED_FLAG_CERTIFICATE) == 0) {
517 eapPeerConfig->password = (unsigned char *)cred->password.value;
518 eapPeerConfig->password_len = cred->password.length;
522 eapPeerConfig->ca_cert = (unsigned char *)cred->caCertificate.value;
523 eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
524 eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
525 configBlobs[CONFIG_BLOB_CA_CERT].data = cred->caCertificateBlob.value;
526 configBlobs[CONFIG_BLOB_CA_CERT].len = cred->caCertificateBlob.length;
528 /* eap channel binding */
529 if (ctx->initiatorCtx.chbindData != NULL) {
530 struct eap_peer_chbind_config *chbind_config =
531 (struct eap_peer_chbind_config *)GSSEAP_MALLOC(sizeof(struct eap_peer_chbind_config));
532 if (chbind_config == NULL) {
534 return GSS_S_FAILURE;
537 chbind_config->req_data = wpabuf_mhead_u8(ctx->initiatorCtx.chbindData);
538 chbind_config->req_data_len = wpabuf_len(ctx->initiatorCtx.chbindData);
539 chbind_config->nsid = CHBIND_NSID_RADIUS;
540 chbind_config->response_cb = &peerProcessChbindResponse;
541 chbind_config->ctx = ctx;
542 eapPeerConfig->chbind_config = chbind_config;
543 eapPeerConfig->chbind_config_len = 1;
545 eapPeerConfig->chbind_config = NULL;
546 eapPeerConfig->chbind_config_len = 0;
548 if (cred->flags & CRED_FLAG_CERTIFICATE) {
550 * CRED_FLAG_CONFIG_BLOB is an internal flag which will be used in the
551 * future to directly pass certificate and private key data to the
552 * EAP implementation, rather than an indirected string pointer.
554 if (cred->flags & CRED_FLAG_CONFIG_BLOB) {
555 eapPeerConfig->client_cert = (unsigned char *)"blob://client-cert";
556 configBlobs[CONFIG_BLOB_CLIENT_CERT].data = cred->clientCertificate.value;
557 configBlobs[CONFIG_BLOB_CLIENT_CERT].len = cred->clientCertificate.length;
559 eapPeerConfig->client_cert = (unsigned char *)"blob://private-key";
560 configBlobs[CONFIG_BLOB_PRIVATE_KEY].data = cred->clientCertificate.value;
561 configBlobs[CONFIG_BLOB_PRIVATE_KEY].len = cred->privateKey.length;
563 eapPeerConfig->client_cert = (unsigned char *)cred->clientCertificate.value;
564 eapPeerConfig->private_key = (unsigned char *)cred->privateKey.value;
566 eapPeerConfig->private_key_passwd = (char *)cred->password.value;
569 eapPeerConfig->server_cert_cb = peerValidateServer;
570 eapPeerConfig->server_cert_ctx = eapPeerConfig;
573 return GSS_S_COMPLETE;
577 peerConfigFree(OM_uint32 *minor,
580 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
582 if (eapPeerConfig->identity != NULL) {
583 GSSEAP_FREE(eapPeerConfig->identity);
584 eapPeerConfig->identity = NULL;
585 eapPeerConfig->identity_len = 0;
588 if (eapPeerConfig->anonymous_identity != NULL) {
589 GSSEAP_FREE(eapPeerConfig->anonymous_identity);
590 eapPeerConfig->anonymous_identity = NULL;
591 eapPeerConfig->anonymous_identity_len = 0;
595 return GSS_S_COMPLETE;
599 * Mark an initiator context as ready for cryptographic operations
602 initReady(OM_uint32 *minor, gss_ctx_id_t ctx)
605 const unsigned char *key;
608 /* Cache encryption type derived from selected mechanism OID */
609 major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
610 if (GSS_ERROR(major))
613 if (!eap_key_available(ctx->initiatorCtx.eap)) {
614 *minor = GSSEAP_KEY_UNAVAILABLE;
615 return GSS_S_UNAVAILABLE;
618 key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
620 if (keyLength < EAP_EMSK_LEN) {
621 *minor = GSSEAP_KEY_TOO_SHORT;
622 return GSS_S_UNAVAILABLE;
625 major = gssEapDeriveRfc3961Key(minor,
626 &key[EAP_EMSK_LEN / 2],
630 if (GSS_ERROR(major))
633 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
635 if (GSS_ERROR(major))
638 major = sequenceInit(minor,
641 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
642 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
644 if (GSS_ERROR(major))
648 return GSS_S_COMPLETE;
652 initBegin(OM_uint32 *minor,
656 OM_uint32 reqFlags GSSEAP_UNUSED,
658 gss_channel_bindings_t chanBindings GSSEAP_UNUSED)
661 gss_cred_id_t cred = ctx->cred;
663 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
665 if (cred->expiryTime)
666 ctx->expiryTime = cred->expiryTime;
667 else if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
670 ctx->expiryTime = time(NULL) + timeReq;
673 * The credential mutex protects its name, however we need to
674 * explicitly lock the acceptor name (unlikely as it may be
675 * that it has attributes set on it).
677 major = gssEapDuplicateName(minor, cred->name, &ctx->initiatorName);
678 if (GSS_ERROR(major))
681 if (target != GSS_C_NO_NAME) {
682 GSSEAP_MUTEX_LOCK(&target->mutex);
684 major = gssEapDuplicateName(minor, target, &ctx->acceptorName);
685 if (GSS_ERROR(major)) {
686 GSSEAP_MUTEX_UNLOCK(&target->mutex);
690 GSSEAP_MUTEX_UNLOCK(&target->mutex);
693 major = gssEapCanonicalizeOid(minor,
695 OID_FLAG_NULL_VALID | OID_FLAG_MAP_NULL_TO_DEFAULT_MECH,
696 &ctx->mechanismUsed);
697 if (GSS_ERROR(major))
700 /* If credentials were provided, check they're usable with this mech */
701 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
702 *minor = GSSEAP_CRED_MECH_MISMATCH;
703 return GSS_S_BAD_MECH;
707 return GSS_S_COMPLETE;
711 eapGssSmInitError(OM_uint32 *minor,
712 gss_cred_id_t cred GSSEAP_UNUSED,
713 gss_ctx_id_t ctx GSSEAP_UNUSED,
714 gss_name_t target GSSEAP_UNUSED,
715 gss_OID mech GSSEAP_UNUSED,
716 OM_uint32 reqFlags GSSEAP_UNUSED,
717 OM_uint32 timeReq GSSEAP_UNUSED,
718 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
719 gss_buffer_t inputToken,
720 gss_buffer_t outputToken GSSEAP_UNUSED,
721 OM_uint32 *smFlags GSSEAP_UNUSED)
726 if (inputToken->length < 8) {
727 *minor = GSSEAP_TOK_TRUNC;
728 return GSS_S_DEFECTIVE_TOKEN;
731 p = (unsigned char *)inputToken->value;
733 major = load_uint32_be(&p[0]);
734 *minor = load_uint32_be(&p[4]);
735 if ((*minor >0) && (*minor < 128))
736 * minor += ERROR_TABLE_BASE_eapg;
739 if (!GSS_ERROR(major) || !IS_WIRE_ERROR(*minor)) {
740 major = GSS_S_FAILURE;
741 *minor = GSSEAP_BAD_ERROR_TOKEN;
744 GSSEAP_ASSERT(GSS_ERROR(major));
749 #ifdef GSSEAP_ENABLE_REAUTH
751 eapGssSmInitGssReauth(OM_uint32 *minor,
755 gss_OID mech GSSEAP_UNUSED,
758 gss_channel_bindings_t chanBindings,
759 gss_buffer_t inputToken,
760 gss_buffer_t outputToken,
761 OM_uint32 *smFlags GSSEAP_UNUSED)
763 OM_uint32 major, tmpMinor;
764 gss_name_t mechTarget = GSS_C_NO_NAME;
765 gss_OID actualMech = GSS_C_NO_OID;
766 OM_uint32 gssFlags, timeRec;
769 * Here we use the passed in credential handle because the resolved
770 * context credential does not currently have the reauth creds.
772 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
773 if (!gssEapCanReauthP(cred, target, timeReq))
774 return GSS_S_CONTINUE_NEEDED;
776 ctx->flags |= CTX_FLAG_KRB_REAUTH;
777 } else if ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
778 major = GSS_S_DEFECTIVE_TOKEN;
779 *minor = GSSEAP_WRONG_ITOK;
783 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
785 major = gssEapMechToGlueName(minor, target, &mechTarget);
786 if (GSS_ERROR(major))
789 major = gssInitSecContext(minor,
793 (gss_OID)gss_mech_krb5,
794 reqFlags | GSS_C_MUTUAL_FLAG,
802 if (GSS_ERROR(major))
805 ctx->gssFlags = gssFlags;
807 if (major == GSS_S_COMPLETE) {
808 GSSEAP_ASSERT(GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE);
810 major = gssEapReauthComplete(minor, ctx, cred, actualMech, timeRec);
811 if (GSS_ERROR(major))
813 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
815 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_REAUTHENTICATE);
819 gssReleaseName(&tmpMinor, &mechTarget);
823 #endif /* GSSEAP_ENABLE_REAUTH */
827 eapGssSmInitVendorInfo(OM_uint32 *minor,
828 gss_cred_id_t cred GSSEAP_UNUSED,
829 gss_ctx_id_t ctx GSSEAP_UNUSED,
830 gss_name_t target GSSEAP_UNUSED,
831 gss_OID mech GSSEAP_UNUSED,
832 OM_uint32 reqFlags GSSEAP_UNUSED,
833 OM_uint32 timeReq GSSEAP_UNUSED,
834 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
835 gss_buffer_t inputToken GSSEAP_UNUSED,
836 gss_buffer_t outputToken,
837 OM_uint32 *smFlags GSSEAP_UNUSED)
841 major = makeStringBuffer(minor, "JANET(UK)", outputToken);
842 if (GSS_ERROR(major))
845 return GSS_S_CONTINUE_NEEDED;
850 eapGssSmInitAcceptorName(OM_uint32 *minor,
851 gss_cred_id_t cred GSSEAP_UNUSED,
853 gss_name_t target GSSEAP_UNUSED,
854 gss_OID mech GSSEAP_UNUSED,
855 OM_uint32 reqFlags GSSEAP_UNUSED,
856 OM_uint32 timeReq GSSEAP_UNUSED,
857 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
858 gss_buffer_t inputToken GSSEAP_UNUSED,
859 gss_buffer_t outputToken,
860 OM_uint32 *smFlags GSSEAP_UNUSED)
864 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL &&
865 ctx->acceptorName != GSS_C_NO_NAME) {
867 /* Send desired target name to acceptor */
868 major = gssEapDisplayName(minor, ctx->acceptorName,
870 if (GSS_ERROR(major))
872 } else if (inputToken != GSS_C_NO_BUFFER) {
877 /* Accept target name hint from acceptor or verify acceptor */
878 major = gssEapImportName(minor, inputToken,
882 if (GSS_ERROR(major))
885 if (ctx->acceptorName != GSS_C_NO_NAME) {
886 /* verify name hint matched asserted acceptor name */
887 major = gssEapCompareName(minor,
890 COMPARE_NAME_FLAG_IGNORE_EMPTY_REALMS,
892 if (GSS_ERROR(major)) {
893 gssEapReleaseName(&tmpMinor, &nameHint);
897 gssEapReleaseName(&tmpMinor, &nameHint);
900 *minor = GSSEAP_WRONG_ACCEPTOR_NAME;
901 return GSS_S_DEFECTIVE_TOKEN;
903 } else { /* acceptor name is no_name */
904 /* accept acceptor name hint */
905 ctx->acceptorName = nameHint;
906 nameHint = GSS_C_NO_NAME;
912 * Currently, other parts of the code assume that the acceptor name
913 * is available, hence this check.
915 if (ctx->acceptorName == GSS_C_NO_NAME) {
916 *minor = GSSEAP_NO_ACCEPTOR_NAME;
917 return GSS_S_FAILURE;
921 * Generate channel binding data
923 if (ctx->initiatorCtx.chbindData == NULL) {
924 major = peerInitEapChannelBinding(minor, ctx);
925 if (GSS_ERROR(major))
929 return GSS_S_CONTINUE_NEEDED;
933 eapGssSmInitIdentity(OM_uint32 *minor,
934 gss_cred_id_t cred GSSEAP_UNUSED,
936 gss_name_t target GSSEAP_UNUSED,
937 gss_OID mech GSSEAP_UNUSED,
938 OM_uint32 reqFlags GSSEAP_UNUSED,
939 OM_uint32 timeReq GSSEAP_UNUSED,
940 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
941 gss_buffer_t inputToken GSSEAP_UNUSED,
942 gss_buffer_t outputToken GSSEAP_UNUSED,
945 struct eap_config eapConfig;
946 memset(&eapConfig, 0, sizeof(eapConfig));
947 eapConfig.cert_in_cb = 1;
949 #ifdef GSSEAP_ENABLE_REAUTH
950 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
953 /* server didn't support reauthentication, sent EAP request */
954 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
955 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
956 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
959 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
961 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
962 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
964 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
965 &gssEapPolicyCallbacks,
968 if (ctx->initiatorCtx.eap == NULL) {
969 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
970 return GSS_S_FAILURE;
973 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
975 /* poke EAP state machine */
976 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
977 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
978 return GSS_S_FAILURE;
981 GSSEAP_SM_TRANSITION_NEXT(ctx);
985 return GSS_S_CONTINUE_NEEDED;
989 eapGssSmInitAuthenticate(OM_uint32 *minor,
990 gss_cred_id_t cred GSSEAP_UNUSED,
992 gss_name_t target GSSEAP_UNUSED,
993 gss_OID mech GSSEAP_UNUSED,
994 OM_uint32 reqFlags GSSEAP_UNUSED,
995 OM_uint32 timeReq GSSEAP_UNUSED,
996 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
997 gss_buffer_t inputToken GSSEAP_UNUSED,
998 gss_buffer_t outputToken,
1003 struct wpabuf *resp = NULL;
1007 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
1009 major = peerConfigInit(minor, ctx);
1010 if (GSS_ERROR(major))
1013 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
1014 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
1016 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
1018 wpabuf_set(&ctx->initiatorCtx.reqData,
1019 inputToken->value, inputToken->length);
1021 major = GSS_S_CONTINUE_NEEDED;
1023 eap_peer_sm_step(ctx->initiatorCtx.eap);
1024 if (ctx->flags & CTX_FLAG_EAP_RESP) {
1025 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
1027 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
1028 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
1029 major = initReady(minor, ctx);
1030 if (GSS_ERROR(major))
1033 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
1034 major = GSS_S_CONTINUE_NEEDED;
1035 GSSEAP_SM_TRANSITION_NEXT(ctx);
1036 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
1037 major = GSS_S_DEFECTIVE_CREDENTIAL;
1038 *minor = GSSEAP_PEER_AUTH_FAILURE;
1040 major = GSS_S_DEFECTIVE_TOKEN;
1041 *minor = GSSEAP_PEER_BAD_MESSAGE;
1047 gss_buffer_desc respBuf;
1049 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
1051 respBuf.length = wpabuf_len(resp);
1052 respBuf.value = (void *)wpabuf_head(resp);
1054 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
1055 if (GSS_ERROR(tmpMajor)) {
1060 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1063 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
1064 peerConfigFree(&tmpMinor, ctx);
1070 eapGssSmInitGssFlags(OM_uint32 *minor,
1071 gss_cred_id_t cred GSSEAP_UNUSED,
1073 gss_name_t target GSSEAP_UNUSED,
1074 gss_OID mech GSSEAP_UNUSED,
1075 OM_uint32 reqFlags GSSEAP_UNUSED,
1076 OM_uint32 timeReq GSSEAP_UNUSED,
1077 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1078 gss_buffer_t inputToken GSSEAP_UNUSED,
1079 gss_buffer_t outputToken,
1080 OM_uint32 *smFlags GSSEAP_UNUSED)
1082 unsigned char wireFlags[4];
1083 gss_buffer_desc flagsBuf;
1086 * As a temporary measure, force mutual authentication until channel binding is
1087 * more widely deployed.
1089 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
1090 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
1092 flagsBuf.length = sizeof(wireFlags);
1093 flagsBuf.value = wireFlags;
1095 return duplicateBuffer(minor, &flagsBuf, outputToken);
1099 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
1100 gss_cred_id_t cred GSSEAP_UNUSED,
1102 gss_name_t target GSSEAP_UNUSED,
1103 gss_OID mech GSSEAP_UNUSED,
1104 OM_uint32 reqFlags GSSEAP_UNUSED,
1105 OM_uint32 timeReq GSSEAP_UNUSED,
1106 gss_channel_bindings_t chanBindings,
1107 gss_buffer_t inputToken GSSEAP_UNUSED,
1108 gss_buffer_t outputToken,
1112 krb5_error_code code;
1113 krb5_context krbContext;
1115 krb5_checksum cksum;
1116 gss_buffer_desc cksumBuffer;
1118 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
1119 chanBindings->application_data.length == 0)
1120 return GSS_S_CONTINUE_NEEDED;
1122 GSSEAP_KRB_INIT(&krbContext);
1124 KRB_DATA_INIT(&data);
1126 gssBufferToKrbData(&chanBindings->application_data, &data);
1128 code = krb5_c_make_checksum(krbContext, ctx->checksumType,
1130 KEY_USAGE_GSSEAP_CHBIND_MIC,
1134 return GSS_S_FAILURE;
1137 cksumBuffer.length = KRB_CHECKSUM_LENGTH(&cksum);
1138 cksumBuffer.value = KRB_CHECKSUM_DATA(&cksum);
1140 major = duplicateBuffer(minor, &cksumBuffer, outputToken);
1141 if (GSS_ERROR(major)) {
1142 krb5_free_checksum_contents(krbContext, &cksum);
1147 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1149 krb5_free_checksum_contents(krbContext, &cksum);
1151 return GSS_S_CONTINUE_NEEDED;
1155 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
1156 gss_cred_id_t cred GSSEAP_UNUSED,
1158 gss_name_t target GSSEAP_UNUSED,
1159 gss_OID mech GSSEAP_UNUSED,
1160 OM_uint32 reqFlags GSSEAP_UNUSED,
1161 OM_uint32 timeReq GSSEAP_UNUSED,
1162 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1163 gss_buffer_t inputToken GSSEAP_UNUSED,
1164 gss_buffer_t outputToken,
1169 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
1170 if (GSS_ERROR(major))
1173 GSSEAP_SM_TRANSITION_NEXT(ctx);
1176 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1178 return GSS_S_CONTINUE_NEEDED;
1181 #ifdef GSSEAP_ENABLE_REAUTH
1183 eapGssSmInitReauthCreds(OM_uint32 *minor,
1186 gss_name_t target GSSEAP_UNUSED,
1187 gss_OID mech GSSEAP_UNUSED,
1188 OM_uint32 reqFlags GSSEAP_UNUSED,
1189 OM_uint32 timeReq GSSEAP_UNUSED,
1190 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1191 gss_buffer_t inputToken,
1192 gss_buffer_t outputToken GSSEAP_UNUSED,
1193 OM_uint32 *smFlags GSSEAP_UNUSED)
1197 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
1198 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
1199 if (GSS_ERROR(major))
1204 return GSS_S_CONTINUE_NEEDED;
1206 #endif /* GSSEAP_ENABLE_REAUTH */
1209 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
1210 gss_cred_id_t cred GSSEAP_UNUSED,
1212 gss_name_t target GSSEAP_UNUSED,
1213 gss_OID mech GSSEAP_UNUSED,
1214 OM_uint32 reqFlags GSSEAP_UNUSED,
1215 OM_uint32 timeReq GSSEAP_UNUSED,
1216 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1217 gss_buffer_t inputToken,
1218 gss_buffer_t outputToken GSSEAP_UNUSED,
1219 OM_uint32 *smFlags GSSEAP_UNUSED)
1223 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
1224 if (GSS_ERROR(major))
1227 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1231 return GSS_S_COMPLETE;
1234 static struct gss_eap_sm eapGssInitiatorSm[] = {
1236 ITOK_TYPE_CONTEXT_ERR,
1238 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
1243 ITOK_TYPE_ACCEPTOR_NAME_RESP,
1244 ITOK_TYPE_ACCEPTOR_NAME_REQ,
1245 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE |
1246 GSSEAP_STATE_ACCEPTOR_EXTS,
1248 eapGssSmInitAcceptorName
1253 ITOK_TYPE_VENDOR_INFO,
1254 GSSEAP_STATE_INITIAL,
1256 eapGssSmInitVendorInfo
1259 #ifdef GSSEAP_ENABLE_REAUTH
1261 ITOK_TYPE_REAUTH_RESP,
1262 ITOK_TYPE_REAUTH_REQ,
1263 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
1265 eapGssSmInitGssReauth
1271 #ifdef GSSEAP_ENABLE_REAUTH
1272 GSSEAP_STATE_REAUTHENTICATE |
1274 GSSEAP_STATE_INITIAL,
1275 SM_ITOK_FLAG_REQUIRED,
1276 eapGssSmInitIdentity
1281 GSSEAP_STATE_AUTHENTICATE,
1282 SM_ITOK_FLAG_REQUIRED,
1283 eapGssSmInitAuthenticate
1287 ITOK_TYPE_GSS_FLAGS,
1288 GSSEAP_STATE_INITIATOR_EXTS,
1290 eapGssSmInitGssFlags
1294 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
1295 GSSEAP_STATE_INITIATOR_EXTS,
1297 eapGssSmInitGssChannelBindings
1301 ITOK_TYPE_INITIATOR_MIC,
1302 GSSEAP_STATE_INITIATOR_EXTS,
1303 SM_ITOK_FLAG_REQUIRED,
1304 eapGssSmInitInitiatorMIC
1306 #ifdef GSSEAP_ENABLE_REAUTH
1308 ITOK_TYPE_REAUTH_CREDS,
1310 GSSEAP_STATE_ACCEPTOR_EXTS,
1312 eapGssSmInitReauthCreds
1315 /* other extensions go here */
1317 ITOK_TYPE_ACCEPTOR_MIC,
1319 GSSEAP_STATE_ACCEPTOR_EXTS,
1320 SM_ITOK_FLAG_REQUIRED,
1321 eapGssSmInitAcceptorMIC
1326 gssEapInitSecContext(OM_uint32 *minor,
1329 gss_name_t target_name,
1331 OM_uint32 req_flags,
1333 gss_channel_bindings_t input_chan_bindings,
1334 gss_buffer_t input_token,
1335 gss_OID *actual_mech_type,
1336 gss_buffer_t output_token,
1337 OM_uint32 *ret_flags,
1338 OM_uint32 *time_rec)
1340 OM_uint32 major, tmpMinor;
1341 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1344 * XXX is acquiring the credential lock here necessary? The password is
1345 * mutable but the contract could specify that this is not updated whilst
1346 * a context is being initialized.
1348 if (cred != GSS_C_NO_CREDENTIAL)
1349 GSSEAP_MUTEX_LOCK(&cred->mutex);
1351 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1352 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1353 if (GSS_ERROR(major))
1356 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1359 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1361 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1362 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1364 if (initialContextToken) {
1365 major = initBegin(minor, ctx, target_name, mech_type,
1366 req_flags, time_req, input_chan_bindings);
1367 if (GSS_ERROR(major))
1371 major = gssEapSmStep(minor,
1378 input_chan_bindings,
1382 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1383 if (GSS_ERROR(major))
1386 if (actual_mech_type != NULL) {
1389 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1390 if (GSS_ERROR(tmpMajor)) {
1397 if (ret_flags != NULL)
1398 *ret_flags = ctx->gssFlags;
1400 if (time_rec != NULL)
1401 gssEapContextTime(&tmpMinor, ctx, time_rec);
1403 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1406 if (cred != GSS_C_NO_CREDENTIAL)
1407 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1408 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1409 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1414 OM_uint32 GSSAPI_CALLCONV
1415 gss_init_sec_context(OM_uint32 *minor,
1417 gss_ctx_id_t *context_handle,
1418 gss_name_t target_name,
1420 OM_uint32 req_flags,
1422 gss_channel_bindings_t input_chan_bindings,
1423 gss_buffer_t input_token,
1424 gss_OID *actual_mech_type,
1425 gss_buffer_t output_token,
1426 OM_uint32 *ret_flags,
1427 OM_uint32 *time_rec)
1429 OM_uint32 major, tmpMinor;
1430 gss_ctx_id_t ctx = *context_handle;
1434 output_token->length = 0;
1435 output_token->value = NULL;
1437 if (ctx == GSS_C_NO_CONTEXT) {
1438 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1439 *minor = GSSEAP_WRONG_SIZE;
1440 return GSS_S_DEFECTIVE_TOKEN;
1443 major = gssEapAllocContext(minor, &ctx);
1444 if (GSS_ERROR(major))
1447 ctx->flags |= CTX_FLAG_INITIATOR;
1449 *context_handle = ctx;
1452 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1454 major = gssEapInitSecContext(minor,
1461 input_chan_bindings,
1468 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1470 if (GSS_ERROR(major))
1471 gssEapReleaseContext(&tmpMinor, context_handle);
1473 gssEapTraceStatus( "gss_init_sec_context", major, *minor);