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
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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 peerValidateCA(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);
432 char* at = strchr(identity, '@');
438 cert_len = cert_to_byte_array(cert, &cert_bytes);
439 hash_len = sha256(cert_bytes, cert_len, hash);
440 GSSEAP_FREE(cert_bytes);
442 if (hash_len != 32) {
443 printf("peerValidateCA: Error: hash_len=%d, not 32!\n", hash_len);
447 /* This is ugly, but it works -- anonymous_identity is '@' + realm
448 * (see peerConfigInit)
450 realm = ((char *) eap_config->anonymous_identity) + 1;
452 ok_so_far = moonshot_confirm_ca_certificate(identity, realm, hash, 32, &error);
454 printf("peerValidateCA: Returning %d\n", ok_so_far);
460 peerConfigInit(OM_uint32 *minor, gss_ctx_id_t ctx)
463 krb5_context krbContext;
464 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
465 struct wpa_config_blob *configBlobs = ctx->initiatorCtx.configBlobs;
466 gss_buffer_desc identity = GSS_C_EMPTY_BUFFER;
467 gss_buffer_desc realm = GSS_C_EMPTY_BUFFER;
468 gss_cred_id_t cred = ctx->cred;
470 eapPeerConfig->identity = NULL;
471 eapPeerConfig->identity_len = 0;
472 eapPeerConfig->anonymous_identity = NULL;
473 eapPeerConfig->anonymous_identity_len = 0;
474 eapPeerConfig->password = NULL;
475 eapPeerConfig->password_len = 0;
476 eapPeerConfig->eap_methods = (struct eap_method_type *) allowed_eap_method_types;
478 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
480 GSSEAP_KRB_INIT(&krbContext);
482 eapPeerConfig->fragment_size = 1024;
484 GSSEAP_ASSERT(cred->name != GSS_C_NO_NAME);
486 if ((cred->name->flags & (NAME_FLAG_NAI | NAME_FLAG_SERVICE)) == 0) {
487 *minor = GSSEAP_BAD_INITIATOR_NAME;
488 return GSS_S_BAD_NAME;
492 major = gssEapDisplayName(minor, cred->name, &identity, NULL);
493 if (GSS_ERROR(major))
496 eapPeerConfig->identity = (unsigned char *)identity.value;
497 eapPeerConfig->identity_len = identity.length;
499 krbPrincRealmToGssBuffer(cred->name->krbPrincipal, &realm);
501 /* anonymous_identity */
502 eapPeerConfig->anonymous_identity = GSSEAP_MALLOC(realm.length + 2);
503 if (eapPeerConfig->anonymous_identity == NULL) {
505 return GSS_S_FAILURE;
508 eapPeerConfig->anonymous_identity[0] = '@';
509 memcpy(eapPeerConfig->anonymous_identity + 1, realm.value, realm.length);
510 eapPeerConfig->anonymous_identity[1 + realm.length] = '\0';
511 eapPeerConfig->anonymous_identity_len = 1 + realm.length;
514 if ((cred->flags & CRED_FLAG_CERTIFICATE) == 0) {
515 eapPeerConfig->password = (unsigned char *)cred->password.value;
516 eapPeerConfig->password_len = cred->password.length;
520 eapPeerConfig->ca_cert = (unsigned char *)cred->caCertificate.value;
521 eapPeerConfig->subject_match = (unsigned char *)cred->subjectNameConstraint.value;
522 eapPeerConfig->altsubject_match = (unsigned char *)cred->subjectAltNameConstraint.value;
523 configBlobs[CONFIG_BLOB_CA_CERT].data = cred->caCertificateBlob.value;
524 configBlobs[CONFIG_BLOB_CA_CERT].len = cred->caCertificateBlob.length;
526 /* eap channel binding */
527 if (ctx->initiatorCtx.chbindData != NULL) {
528 struct eap_peer_chbind_config *chbind_config =
529 (struct eap_peer_chbind_config *)GSSEAP_MALLOC(sizeof(struct eap_peer_chbind_config));
530 if (chbind_config == NULL) {
532 return GSS_S_FAILURE;
535 chbind_config->req_data = wpabuf_mhead_u8(ctx->initiatorCtx.chbindData);
536 chbind_config->req_data_len = wpabuf_len(ctx->initiatorCtx.chbindData);
537 chbind_config->nsid = CHBIND_NSID_RADIUS;
538 chbind_config->response_cb = &peerProcessChbindResponse;
539 chbind_config->ctx = ctx;
540 eapPeerConfig->chbind_config = chbind_config;
541 eapPeerConfig->chbind_config_len = 1;
543 eapPeerConfig->chbind_config = NULL;
544 eapPeerConfig->chbind_config_len = 0;
546 if (cred->flags & CRED_FLAG_CERTIFICATE) {
548 * CRED_FLAG_CONFIG_BLOB is an internal flag which will be used in the
549 * future to directly pass certificate and private key data to the
550 * EAP implementation, rather than an indirected string pointer.
552 if (cred->flags & CRED_FLAG_CONFIG_BLOB) {
553 eapPeerConfig->client_cert = (unsigned char *)"blob://client-cert";
554 configBlobs[CONFIG_BLOB_CLIENT_CERT].data = cred->clientCertificate.value;
555 configBlobs[CONFIG_BLOB_CLIENT_CERT].len = cred->clientCertificate.length;
557 eapPeerConfig->client_cert = (unsigned char *)"blob://private-key";
558 configBlobs[CONFIG_BLOB_PRIVATE_KEY].data = cred->clientCertificate.value;
559 configBlobs[CONFIG_BLOB_PRIVATE_KEY].len = cred->privateKey.length;
561 eapPeerConfig->client_cert = (unsigned char *)cred->clientCertificate.value;
562 eapPeerConfig->private_key = (unsigned char *)cred->privateKey.value;
564 eapPeerConfig->private_key_passwd = (char *)cred->password.value;
567 eapPeerConfig->validate_ca_cb = peerValidateCA;
568 eapPeerConfig->validate_ca_ctx = eapPeerConfig;
571 return GSS_S_COMPLETE;
575 peerConfigFree(OM_uint32 *minor,
578 struct eap_peer_config *eapPeerConfig = &ctx->initiatorCtx.eapPeerConfig;
580 if (eapPeerConfig->identity != NULL) {
581 GSSEAP_FREE(eapPeerConfig->identity);
582 eapPeerConfig->identity = NULL;
583 eapPeerConfig->identity_len = 0;
586 if (eapPeerConfig->anonymous_identity != NULL) {
587 GSSEAP_FREE(eapPeerConfig->anonymous_identity);
588 eapPeerConfig->anonymous_identity = NULL;
589 eapPeerConfig->anonymous_identity_len = 0;
593 return GSS_S_COMPLETE;
597 * Mark an initiator context as ready for cryptographic operations
600 initReady(OM_uint32 *minor, gss_ctx_id_t ctx)
603 const unsigned char *key;
606 /* Cache encryption type derived from selected mechanism OID */
607 major = gssEapOidToEnctype(minor, ctx->mechanismUsed, &ctx->encryptionType);
608 if (GSS_ERROR(major))
611 if (!eap_key_available(ctx->initiatorCtx.eap)) {
612 *minor = GSSEAP_KEY_UNAVAILABLE;
613 return GSS_S_UNAVAILABLE;
616 key = eap_get_eapKeyData(ctx->initiatorCtx.eap, &keyLength);
618 if (keyLength < EAP_EMSK_LEN) {
619 *minor = GSSEAP_KEY_TOO_SHORT;
620 return GSS_S_UNAVAILABLE;
623 major = gssEapDeriveRfc3961Key(minor,
624 &key[EAP_EMSK_LEN / 2],
628 if (GSS_ERROR(major))
631 major = rfc3961ChecksumTypeForKey(minor, &ctx->rfc3961Key,
633 if (GSS_ERROR(major))
636 major = sequenceInit(minor,
639 ((ctx->gssFlags & GSS_C_REPLAY_FLAG) != 0),
640 ((ctx->gssFlags & GSS_C_SEQUENCE_FLAG) != 0),
642 if (GSS_ERROR(major))
646 return GSS_S_COMPLETE;
650 initBegin(OM_uint32 *minor,
654 OM_uint32 reqFlags GSSEAP_UNUSED,
656 gss_channel_bindings_t chanBindings GSSEAP_UNUSED)
659 gss_cred_id_t cred = ctx->cred;
661 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
663 if (cred->expiryTime)
664 ctx->expiryTime = cred->expiryTime;
665 else if (timeReq == 0 || timeReq == GSS_C_INDEFINITE)
668 ctx->expiryTime = time(NULL) + timeReq;
671 * The credential mutex protects its name, however we need to
672 * explicitly lock the acceptor name (unlikely as it may be
673 * that it has attributes set on it).
675 major = gssEapDuplicateName(minor, cred->name, &ctx->initiatorName);
676 if (GSS_ERROR(major))
679 if (target != GSS_C_NO_NAME) {
680 GSSEAP_MUTEX_LOCK(&target->mutex);
682 major = gssEapDuplicateName(minor, target, &ctx->acceptorName);
683 if (GSS_ERROR(major)) {
684 GSSEAP_MUTEX_UNLOCK(&target->mutex);
688 GSSEAP_MUTEX_UNLOCK(&target->mutex);
691 major = gssEapCanonicalizeOid(minor,
693 OID_FLAG_NULL_VALID | OID_FLAG_MAP_NULL_TO_DEFAULT_MECH,
694 &ctx->mechanismUsed);
695 if (GSS_ERROR(major))
698 /* If credentials were provided, check they're usable with this mech */
699 if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
700 *minor = GSSEAP_CRED_MECH_MISMATCH;
701 return GSS_S_BAD_MECH;
705 return GSS_S_COMPLETE;
709 eapGssSmInitError(OM_uint32 *minor,
710 gss_cred_id_t cred GSSEAP_UNUSED,
711 gss_ctx_id_t ctx GSSEAP_UNUSED,
712 gss_name_t target GSSEAP_UNUSED,
713 gss_OID mech GSSEAP_UNUSED,
714 OM_uint32 reqFlags GSSEAP_UNUSED,
715 OM_uint32 timeReq GSSEAP_UNUSED,
716 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
717 gss_buffer_t inputToken,
718 gss_buffer_t outputToken GSSEAP_UNUSED,
719 OM_uint32 *smFlags GSSEAP_UNUSED)
724 if (inputToken->length < 8) {
725 *minor = GSSEAP_TOK_TRUNC;
726 return GSS_S_DEFECTIVE_TOKEN;
729 p = (unsigned char *)inputToken->value;
731 major = load_uint32_be(&p[0]);
732 *minor = load_uint32_be(&p[4]);
733 if ((*minor >0) && (*minor < 128))
734 * minor += ERROR_TABLE_BASE_eapg;
737 if (!GSS_ERROR(major) || !IS_WIRE_ERROR(*minor)) {
738 major = GSS_S_FAILURE;
739 *minor = GSSEAP_BAD_ERROR_TOKEN;
742 GSSEAP_ASSERT(GSS_ERROR(major));
747 #ifdef GSSEAP_ENABLE_REAUTH
749 eapGssSmInitGssReauth(OM_uint32 *minor,
753 gss_OID mech GSSEAP_UNUSED,
756 gss_channel_bindings_t chanBindings,
757 gss_buffer_t inputToken,
758 gss_buffer_t outputToken,
759 OM_uint32 *smFlags GSSEAP_UNUSED)
761 OM_uint32 major, tmpMinor;
762 gss_name_t mechTarget = GSS_C_NO_NAME;
763 gss_OID actualMech = GSS_C_NO_OID;
764 OM_uint32 gssFlags, timeRec;
767 * Here we use the passed in credential handle because the resolved
768 * context credential does not currently have the reauth creds.
770 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL) {
771 if (!gssEapCanReauthP(cred, target, timeReq))
772 return GSS_S_CONTINUE_NEEDED;
774 ctx->flags |= CTX_FLAG_KRB_REAUTH;
775 } else if ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
776 major = GSS_S_DEFECTIVE_TOKEN;
777 *minor = GSSEAP_WRONG_ITOK;
781 GSSEAP_ASSERT(cred != GSS_C_NO_CREDENTIAL);
783 major = gssEapMechToGlueName(minor, target, &mechTarget);
784 if (GSS_ERROR(major))
787 major = gssInitSecContext(minor,
791 (gss_OID)gss_mech_krb5,
792 reqFlags | GSS_C_MUTUAL_FLAG,
800 if (GSS_ERROR(major))
803 ctx->gssFlags = gssFlags;
805 if (major == GSS_S_COMPLETE) {
806 GSSEAP_ASSERT(GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE);
808 major = gssEapReauthComplete(minor, ctx, cred, actualMech, timeRec);
809 if (GSS_ERROR(major))
811 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
813 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_REAUTHENTICATE);
817 gssReleaseName(&tmpMinor, &mechTarget);
821 #endif /* GSSEAP_ENABLE_REAUTH */
825 eapGssSmInitVendorInfo(OM_uint32 *minor,
826 gss_cred_id_t cred GSSEAP_UNUSED,
827 gss_ctx_id_t ctx GSSEAP_UNUSED,
828 gss_name_t target GSSEAP_UNUSED,
829 gss_OID mech GSSEAP_UNUSED,
830 OM_uint32 reqFlags GSSEAP_UNUSED,
831 OM_uint32 timeReq GSSEAP_UNUSED,
832 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
833 gss_buffer_t inputToken GSSEAP_UNUSED,
834 gss_buffer_t outputToken,
835 OM_uint32 *smFlags GSSEAP_UNUSED)
839 major = makeStringBuffer(minor, "JANET(UK)", outputToken);
840 if (GSS_ERROR(major))
843 return GSS_S_CONTINUE_NEEDED;
848 eapGssSmInitAcceptorName(OM_uint32 *minor,
849 gss_cred_id_t cred GSSEAP_UNUSED,
851 gss_name_t target GSSEAP_UNUSED,
852 gss_OID mech GSSEAP_UNUSED,
853 OM_uint32 reqFlags GSSEAP_UNUSED,
854 OM_uint32 timeReq GSSEAP_UNUSED,
855 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
856 gss_buffer_t inputToken GSSEAP_UNUSED,
857 gss_buffer_t outputToken,
858 OM_uint32 *smFlags GSSEAP_UNUSED)
862 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIAL &&
863 ctx->acceptorName != GSS_C_NO_NAME) {
865 /* Send desired target name to acceptor */
866 major = gssEapDisplayName(minor, ctx->acceptorName,
868 if (GSS_ERROR(major))
870 } else if (inputToken != GSS_C_NO_BUFFER) {
875 /* Accept target name hint from acceptor or verify acceptor */
876 major = gssEapImportName(minor, inputToken,
880 if (GSS_ERROR(major))
883 if (ctx->acceptorName != GSS_C_NO_NAME) {
884 /* verify name hint matched asserted acceptor name */
885 major = gssEapCompareName(minor,
888 COMPARE_NAME_FLAG_IGNORE_EMPTY_REALMS,
890 if (GSS_ERROR(major)) {
891 gssEapReleaseName(&tmpMinor, &nameHint);
895 gssEapReleaseName(&tmpMinor, &nameHint);
898 *minor = GSSEAP_WRONG_ACCEPTOR_NAME;
899 return GSS_S_DEFECTIVE_TOKEN;
901 } else { /* acceptor name is no_name */
902 /* accept acceptor name hint */
903 ctx->acceptorName = nameHint;
904 nameHint = GSS_C_NO_NAME;
910 * Currently, other parts of the code assume that the acceptor name
911 * is available, hence this check.
913 if (ctx->acceptorName == GSS_C_NO_NAME) {
914 *minor = GSSEAP_NO_ACCEPTOR_NAME;
915 return GSS_S_FAILURE;
919 * Generate channel binding data
921 if (ctx->initiatorCtx.chbindData == NULL) {
922 major = peerInitEapChannelBinding(minor, ctx);
923 if (GSS_ERROR(major))
927 return GSS_S_CONTINUE_NEEDED;
931 eapGssSmInitIdentity(OM_uint32 *minor,
932 gss_cred_id_t cred GSSEAP_UNUSED,
934 gss_name_t target GSSEAP_UNUSED,
935 gss_OID mech GSSEAP_UNUSED,
936 OM_uint32 reqFlags GSSEAP_UNUSED,
937 OM_uint32 timeReq GSSEAP_UNUSED,
938 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
939 gss_buffer_t inputToken GSSEAP_UNUSED,
940 gss_buffer_t outputToken GSSEAP_UNUSED,
943 struct eap_config eapConfig;
944 memset(&eapConfig, 0, sizeof(eapConfig));
945 eapConfig.cert_in_cb = 1;
947 #ifdef GSSEAP_ENABLE_REAUTH
948 if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_REAUTHENTICATE) {
951 /* server didn't support reauthentication, sent EAP request */
952 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
953 ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
954 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
957 *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
959 GSSEAP_ASSERT((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0);
960 GSSEAP_ASSERT(inputToken == GSS_C_NO_BUFFER);
962 ctx->initiatorCtx.eap = eap_peer_sm_init(ctx,
963 &gssEapPolicyCallbacks,
966 if (ctx->initiatorCtx.eap == NULL) {
967 *minor = GSSEAP_PEER_SM_INIT_FAILURE;
968 return GSS_S_FAILURE;
971 ctx->flags |= CTX_FLAG_EAP_RESTART | CTX_FLAG_EAP_PORT_ENABLED;
973 /* poke EAP state machine */
974 if (eap_peer_sm_step(ctx->initiatorCtx.eap) != 0) {
975 *minor = GSSEAP_PEER_SM_STEP_FAILURE;
976 return GSS_S_FAILURE;
979 GSSEAP_SM_TRANSITION_NEXT(ctx);
983 return GSS_S_CONTINUE_NEEDED;
987 eapGssSmInitAuthenticate(OM_uint32 *minor,
988 gss_cred_id_t cred GSSEAP_UNUSED,
990 gss_name_t target GSSEAP_UNUSED,
991 gss_OID mech GSSEAP_UNUSED,
992 OM_uint32 reqFlags GSSEAP_UNUSED,
993 OM_uint32 timeReq GSSEAP_UNUSED,
994 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
995 gss_buffer_t inputToken GSSEAP_UNUSED,
996 gss_buffer_t outputToken,
1001 struct wpabuf *resp = NULL;
1005 GSSEAP_ASSERT(inputToken != GSS_C_NO_BUFFER);
1007 major = peerConfigInit(minor, ctx);
1008 if (GSS_ERROR(major))
1011 GSSEAP_ASSERT(ctx->initiatorCtx.eap != NULL);
1012 GSSEAP_ASSERT(ctx->flags & CTX_FLAG_EAP_PORT_ENABLED);
1014 ctx->flags |= CTX_FLAG_EAP_REQ; /* we have a Request from the acceptor */
1016 wpabuf_set(&ctx->initiatorCtx.reqData,
1017 inputToken->value, inputToken->length);
1019 major = GSS_S_CONTINUE_NEEDED;
1021 eap_peer_sm_step(ctx->initiatorCtx.eap);
1022 if (ctx->flags & CTX_FLAG_EAP_RESP) {
1023 ctx->flags &= ~(CTX_FLAG_EAP_RESP);
1025 resp = eap_get_eapRespData(ctx->initiatorCtx.eap);
1026 } else if (ctx->flags & CTX_FLAG_EAP_SUCCESS) {
1027 major = initReady(minor, ctx);
1028 if (GSS_ERROR(major))
1031 ctx->flags &= ~(CTX_FLAG_EAP_SUCCESS);
1032 major = GSS_S_CONTINUE_NEEDED;
1033 GSSEAP_SM_TRANSITION_NEXT(ctx);
1034 } else if (ctx->flags & CTX_FLAG_EAP_FAIL) {
1035 major = GSS_S_DEFECTIVE_CREDENTIAL;
1036 *minor = GSSEAP_PEER_AUTH_FAILURE;
1038 major = GSS_S_DEFECTIVE_TOKEN;
1039 *minor = GSSEAP_PEER_BAD_MESSAGE;
1045 gss_buffer_desc respBuf;
1047 GSSEAP_ASSERT(major == GSS_S_CONTINUE_NEEDED);
1049 respBuf.length = wpabuf_len(resp);
1050 respBuf.value = (void *)wpabuf_head(resp);
1052 tmpMajor = duplicateBuffer(&tmpMinor, &respBuf, outputToken);
1053 if (GSS_ERROR(tmpMajor)) {
1058 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1061 wpabuf_set(&ctx->initiatorCtx.reqData, NULL, 0);
1062 peerConfigFree(&tmpMinor, ctx);
1068 eapGssSmInitGssFlags(OM_uint32 *minor,
1069 gss_cred_id_t cred GSSEAP_UNUSED,
1071 gss_name_t target GSSEAP_UNUSED,
1072 gss_OID mech GSSEAP_UNUSED,
1073 OM_uint32 reqFlags GSSEAP_UNUSED,
1074 OM_uint32 timeReq GSSEAP_UNUSED,
1075 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1076 gss_buffer_t inputToken GSSEAP_UNUSED,
1077 gss_buffer_t outputToken,
1078 OM_uint32 *smFlags GSSEAP_UNUSED)
1080 unsigned char wireFlags[4];
1081 gss_buffer_desc flagsBuf;
1084 * As a temporary measure, force mutual authentication until channel binding is
1085 * more widely deployed.
1087 ctx->gssFlags |= GSS_C_MUTUAL_FLAG;
1088 store_uint32_be(ctx->gssFlags & GSSEAP_WIRE_FLAGS_MASK, wireFlags);
1090 flagsBuf.length = sizeof(wireFlags);
1091 flagsBuf.value = wireFlags;
1093 return duplicateBuffer(minor, &flagsBuf, outputToken);
1097 eapGssSmInitGssChannelBindings(OM_uint32 *minor,
1098 gss_cred_id_t cred GSSEAP_UNUSED,
1100 gss_name_t target GSSEAP_UNUSED,
1101 gss_OID mech GSSEAP_UNUSED,
1102 OM_uint32 reqFlags GSSEAP_UNUSED,
1103 OM_uint32 timeReq GSSEAP_UNUSED,
1104 gss_channel_bindings_t chanBindings,
1105 gss_buffer_t inputToken GSSEAP_UNUSED,
1106 gss_buffer_t outputToken,
1110 krb5_error_code code;
1111 krb5_context krbContext;
1113 krb5_checksum cksum;
1114 gss_buffer_desc cksumBuffer;
1116 if (chanBindings == GSS_C_NO_CHANNEL_BINDINGS ||
1117 chanBindings->application_data.length == 0)
1118 return GSS_S_CONTINUE_NEEDED;
1120 GSSEAP_KRB_INIT(&krbContext);
1122 KRB_DATA_INIT(&data);
1124 gssBufferToKrbData(&chanBindings->application_data, &data);
1126 code = krb5_c_make_checksum(krbContext, ctx->checksumType,
1128 KEY_USAGE_GSSEAP_CHBIND_MIC,
1132 return GSS_S_FAILURE;
1135 cksumBuffer.length = KRB_CHECKSUM_LENGTH(&cksum);
1136 cksumBuffer.value = KRB_CHECKSUM_DATA(&cksum);
1138 major = duplicateBuffer(minor, &cksumBuffer, outputToken);
1139 if (GSS_ERROR(major)) {
1140 krb5_free_checksum_contents(krbContext, &cksum);
1145 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1147 krb5_free_checksum_contents(krbContext, &cksum);
1149 return GSS_S_CONTINUE_NEEDED;
1153 eapGssSmInitInitiatorMIC(OM_uint32 *minor,
1154 gss_cred_id_t cred GSSEAP_UNUSED,
1156 gss_name_t target GSSEAP_UNUSED,
1157 gss_OID mech GSSEAP_UNUSED,
1158 OM_uint32 reqFlags GSSEAP_UNUSED,
1159 OM_uint32 timeReq GSSEAP_UNUSED,
1160 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1161 gss_buffer_t inputToken GSSEAP_UNUSED,
1162 gss_buffer_t outputToken,
1167 major = gssEapMakeTokenMIC(minor, ctx, outputToken);
1168 if (GSS_ERROR(major))
1171 GSSEAP_SM_TRANSITION_NEXT(ctx);
1174 *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
1176 return GSS_S_CONTINUE_NEEDED;
1179 #ifdef GSSEAP_ENABLE_REAUTH
1181 eapGssSmInitReauthCreds(OM_uint32 *minor,
1184 gss_name_t target GSSEAP_UNUSED,
1185 gss_OID mech GSSEAP_UNUSED,
1186 OM_uint32 reqFlags GSSEAP_UNUSED,
1187 OM_uint32 timeReq GSSEAP_UNUSED,
1188 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1189 gss_buffer_t inputToken,
1190 gss_buffer_t outputToken GSSEAP_UNUSED,
1191 OM_uint32 *smFlags GSSEAP_UNUSED)
1195 if (ctx->gssFlags & GSS_C_MUTUAL_FLAG) {
1196 major = gssEapStoreReauthCreds(minor, ctx, cred, inputToken);
1197 if (GSS_ERROR(major))
1202 return GSS_S_CONTINUE_NEEDED;
1204 #endif /* GSSEAP_ENABLE_REAUTH */
1207 eapGssSmInitAcceptorMIC(OM_uint32 *minor,
1208 gss_cred_id_t cred GSSEAP_UNUSED,
1210 gss_name_t target GSSEAP_UNUSED,
1211 gss_OID mech GSSEAP_UNUSED,
1212 OM_uint32 reqFlags GSSEAP_UNUSED,
1213 OM_uint32 timeReq GSSEAP_UNUSED,
1214 gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
1215 gss_buffer_t inputToken,
1216 gss_buffer_t outputToken GSSEAP_UNUSED,
1217 OM_uint32 *smFlags GSSEAP_UNUSED)
1221 major = gssEapVerifyTokenMIC(minor, ctx, inputToken);
1222 if (GSS_ERROR(major))
1225 GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
1229 return GSS_S_COMPLETE;
1232 static struct gss_eap_sm eapGssInitiatorSm[] = {
1234 ITOK_TYPE_CONTEXT_ERR,
1236 GSSEAP_STATE_ALL & ~(GSSEAP_STATE_INITIAL),
1241 ITOK_TYPE_ACCEPTOR_NAME_RESP,
1242 ITOK_TYPE_ACCEPTOR_NAME_REQ,
1243 GSSEAP_STATE_INITIAL | GSSEAP_STATE_AUTHENTICATE |
1244 GSSEAP_STATE_ACCEPTOR_EXTS,
1246 eapGssSmInitAcceptorName
1251 ITOK_TYPE_VENDOR_INFO,
1252 GSSEAP_STATE_INITIAL,
1254 eapGssSmInitVendorInfo
1257 #ifdef GSSEAP_ENABLE_REAUTH
1259 ITOK_TYPE_REAUTH_RESP,
1260 ITOK_TYPE_REAUTH_REQ,
1261 GSSEAP_STATE_INITIAL | GSSEAP_STATE_REAUTHENTICATE,
1263 eapGssSmInitGssReauth
1269 #ifdef GSSEAP_ENABLE_REAUTH
1270 GSSEAP_STATE_REAUTHENTICATE |
1272 GSSEAP_STATE_INITIAL,
1273 SM_ITOK_FLAG_REQUIRED,
1274 eapGssSmInitIdentity
1279 GSSEAP_STATE_AUTHENTICATE,
1280 SM_ITOK_FLAG_REQUIRED,
1281 eapGssSmInitAuthenticate
1285 ITOK_TYPE_GSS_FLAGS,
1286 GSSEAP_STATE_INITIATOR_EXTS,
1288 eapGssSmInitGssFlags
1292 ITOK_TYPE_GSS_CHANNEL_BINDINGS,
1293 GSSEAP_STATE_INITIATOR_EXTS,
1295 eapGssSmInitGssChannelBindings
1299 ITOK_TYPE_INITIATOR_MIC,
1300 GSSEAP_STATE_INITIATOR_EXTS,
1301 SM_ITOK_FLAG_REQUIRED,
1302 eapGssSmInitInitiatorMIC
1304 #ifdef GSSEAP_ENABLE_REAUTH
1306 ITOK_TYPE_REAUTH_CREDS,
1308 GSSEAP_STATE_ACCEPTOR_EXTS,
1310 eapGssSmInitReauthCreds
1313 /* other extensions go here */
1315 ITOK_TYPE_ACCEPTOR_MIC,
1317 GSSEAP_STATE_ACCEPTOR_EXTS,
1318 SM_ITOK_FLAG_REQUIRED,
1319 eapGssSmInitAcceptorMIC
1324 gssEapInitSecContext(OM_uint32 *minor,
1327 gss_name_t target_name,
1329 OM_uint32 req_flags,
1331 gss_channel_bindings_t input_chan_bindings,
1332 gss_buffer_t input_token,
1333 gss_OID *actual_mech_type,
1334 gss_buffer_t output_token,
1335 OM_uint32 *ret_flags,
1336 OM_uint32 *time_rec)
1338 OM_uint32 major, tmpMinor;
1339 int initialContextToken = (ctx->mechanismUsed == GSS_C_NO_OID);
1342 * XXX is acquiring the credential lock here necessary? The password is
1343 * mutable but the contract could specify that this is not updated whilst
1344 * a context is being initialized.
1346 if (cred != GSS_C_NO_CREDENTIAL)
1347 GSSEAP_MUTEX_LOCK(&cred->mutex);
1349 if (ctx->cred == GSS_C_NO_CREDENTIAL) {
1350 major = gssEapResolveInitiatorCred(minor, cred, target_name, &ctx->cred);
1351 if (GSS_ERROR(major))
1354 GSSEAP_ASSERT(ctx->cred != GSS_C_NO_CREDENTIAL);
1357 GSSEAP_MUTEX_LOCK(&ctx->cred->mutex);
1359 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_RESOLVED);
1360 GSSEAP_ASSERT(ctx->cred->flags & CRED_FLAG_INITIATE);
1362 if (initialContextToken) {
1363 major = initBegin(minor, ctx, target_name, mech_type,
1364 req_flags, time_req, input_chan_bindings);
1365 if (GSS_ERROR(major))
1369 major = gssEapSmStep(minor,
1376 input_chan_bindings,
1380 sizeof(eapGssInitiatorSm) / sizeof(eapGssInitiatorSm[0]));
1381 if (GSS_ERROR(major))
1384 if (actual_mech_type != NULL) {
1387 tmpMajor = gssEapCanonicalizeOid(&tmpMinor, ctx->mechanismUsed, 0, actual_mech_type);
1388 if (GSS_ERROR(tmpMajor)) {
1395 if (ret_flags != NULL)
1396 *ret_flags = ctx->gssFlags;
1398 if (time_rec != NULL)
1399 gssEapContextTime(&tmpMinor, ctx, time_rec);
1401 GSSEAP_ASSERT(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
1404 if (cred != GSS_C_NO_CREDENTIAL)
1405 GSSEAP_MUTEX_UNLOCK(&cred->mutex);
1406 if (ctx->cred != GSS_C_NO_CREDENTIAL)
1407 GSSEAP_MUTEX_UNLOCK(&ctx->cred->mutex);
1412 OM_uint32 GSSAPI_CALLCONV
1413 gss_init_sec_context(OM_uint32 *minor,
1415 gss_ctx_id_t *context_handle,
1416 gss_name_t target_name,
1418 OM_uint32 req_flags,
1420 gss_channel_bindings_t input_chan_bindings,
1421 gss_buffer_t input_token,
1422 gss_OID *actual_mech_type,
1423 gss_buffer_t output_token,
1424 OM_uint32 *ret_flags,
1425 OM_uint32 *time_rec)
1427 OM_uint32 major, tmpMinor;
1428 gss_ctx_id_t ctx = *context_handle;
1432 output_token->length = 0;
1433 output_token->value = NULL;
1435 if (ctx == GSS_C_NO_CONTEXT) {
1436 if (input_token != GSS_C_NO_BUFFER && input_token->length != 0) {
1437 *minor = GSSEAP_WRONG_SIZE;
1438 return GSS_S_DEFECTIVE_TOKEN;
1441 major = gssEapAllocContext(minor, &ctx);
1442 if (GSS_ERROR(major))
1445 ctx->flags |= CTX_FLAG_INITIATOR;
1447 *context_handle = ctx;
1450 GSSEAP_MUTEX_LOCK(&ctx->mutex);
1452 major = gssEapInitSecContext(minor,
1459 input_chan_bindings,
1466 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
1468 if (GSS_ERROR(major))
1469 gssEapReleaseContext(&tmpMinor, context_handle);
1471 gssEapTraceStatus( "gss_init_sec_context", major, *minor);