/*
- * Copyright (c) 2010, JANET(UK)
+ * Copyright (c) 2011, JANET(UK)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#ifdef GSSEAP_ENABLE_REAUTH
static OM_uint32
eapGssSmAcceptGssReauth(OM_uint32 *minor,
- gss_ctx_id_t ctx,
gss_cred_id_t cred,
- gss_buffer_t inputToken,
+ gss_ctx_id_t ctx,
+ gss_name_t target,
+ gss_OID mech,
+ OM_uint32 reqFlags,
+ OM_uint32 timeReq,
gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken);
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags);
#endif
/*
ctx->gssFlags |= GSS_C_ANON_FLAG;
}
- major = gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
+ major = gssEapImportName(minor, &nameBuf,
+ (ctx->gssFlags & GSS_C_ANON_FLAG) ?
+ GSS_C_NT_ANONYMOUS : GSS_C_NT_USER_NAME,
&ctx->initiatorName);
if (GSS_ERROR(major))
return major;
if (GSS_ERROR(major))
return major;
- ctx->initiatorName->attrCtx = gssEapCreateAttrContext(cred, ctx);
+ major = gssEapCreateAttrContext(minor, cred, ctx,
+ &ctx->initiatorName->attrCtx,
+ &ctx->expiryTime);
+ if (GSS_ERROR(major))
+ return major;
*minor = 0;
return GSS_S_COMPLETE;
}
+static OM_uint32
+eapGssSmAcceptAcceptorName(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
+{
+ OM_uint32 major;
+
+ /* XXX TODO import and validate name from inputToken */
+
+ if (ctx->acceptorName != GSS_C_NO_NAME) {
+ /* Send desired target name to acceptor */
+ major = gssEapDisplayName(minor, ctx->acceptorName,
+ outputToken, NULL);
+ if (GSS_ERROR(major))
+ return major;
+ }
+
+ return GSS_S_CONTINUE_NEEDED;
+}
+
+#ifdef GSSEAP_DEBUG
+static OM_uint32
+eapGssSmAcceptVendorInfo(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx GSSEAP_UNUSED,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
+{
+ fprintf(stderr, "GSS-EAP: vendor: %.*s\n",
+ (int)inputToken->length, (char *)inputToken->value);
+
+ *minor = 0;
+ return GSS_S_CONTINUE_NEEDED;
+}
+#endif
+
+
/*
* Emit a identity EAP request to force the initiator (peer) to identify
* itself.
*/
static OM_uint32
eapGssSmAcceptIdentity(OM_uint32 *minor,
- gss_ctx_id_t ctx,
gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
gss_buffer_t inputToken,
- gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
{
OM_uint32 major;
- union {
- struct eap_hdr pdu;
- unsigned char data[5];
- } pkt;
+ struct wpabuf *reqData;
gss_buffer_desc pktBuffer;
+ if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
+ *minor = GSSEAP_CRED_MECH_MISMATCH;
+ return GSS_S_BAD_MECH;
+ }
+
if (inputToken != GSS_C_NO_BUFFER && inputToken->length != 0) {
*minor = GSSEAP_WRONG_SIZE;
return GSS_S_DEFECTIVE_TOKEN;
}
- assert(ctx->acceptorName == GSS_C_NO_NAME);
-
- if (cred != GSS_C_NO_CREDENTIAL && cred->name != GSS_C_NO_NAME) {
- major = gssEapDuplicateName(minor, cred->name, &ctx->acceptorName);
- if (GSS_ERROR(major))
- return major;
+ reqData = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY, 0,
+ EAP_CODE_REQUEST, 0);
+ if (reqData == NULL) {
+ *minor = ENOMEM;
+ return GSS_S_FAILURE;
}
- pkt.pdu.code = EAP_CODE_REQUEST;
- pkt.pdu.identifier = 0;
- pkt.pdu.length = htons(sizeof(pkt.data));
- pkt.data[4] = EAP_TYPE_IDENTITY;
-
- pktBuffer.length = sizeof(pkt.data);
- pktBuffer.value = pkt.data;
+ pktBuffer.length = wpabuf_len(reqData);
+ pktBuffer.value = (void *)wpabuf_head(reqData);
major = duplicateBuffer(minor, &pktBuffer, outputToken);
if (GSS_ERROR(major))
return major;
- ctx->state = EAP_STATE_AUTHENTICATE;
+ wpabuf_free(reqData);
+
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
*minor = 0;
+ *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
+
return GSS_S_CONTINUE_NEEDED;
}
/*
+ * Returns TRUE if the input token contains an EAP identity response.
+ */
+static int
+isIdentityResponseP(gss_buffer_t inputToken)
+{
+ struct wpabuf respData;
+
+ wpabuf_set(&respData, inputToken->value, inputToken->length);
+
+ return (eap_get_type(&respData) == EAP_TYPE_IDENTITY);
+}
+
+/*
+ * Save the asserted initiator identity from the EAP identity response.
+ */
+static OM_uint32
+importInitiatorIdentity(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ gss_buffer_t inputToken)
+{
+ OM_uint32 tmpMinor;
+ struct wpabuf respData;
+ const unsigned char *pos;
+ size_t len;
+ gss_buffer_desc nameBuf;
+
+ wpabuf_set(&respData, inputToken->value, inputToken->length);
+
+ pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
+ &respData, &len);
+ if (pos == NULL) {
+ *minor = GSSEAP_PEER_BAD_MESSAGE;
+ return GSS_S_DEFECTIVE_TOKEN;
+ }
+
+ nameBuf.value = (void *)pos;
+ nameBuf.length = len;
+
+ gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
+
+ return gssEapImportName(minor, &nameBuf, GSS_C_NT_USER_NAME,
+ &ctx->initiatorName);
+}
+
+/*
+ * Pass the asserted initiator identity to the authentication server.
+ */
+static OM_uint32
+setInitiatorIdentity(OM_uint32 *minor,
+ gss_ctx_id_t ctx,
+ VALUE_PAIR **vps)
+{
+ OM_uint32 major, tmpMinor;
+ gss_buffer_desc nameBuf;
+
+ /*
+ * We should have got an EAP identity response, but if we didn't, then
+ * we will just avoid sending User-Name. Note that radsecproxy requires
+ * User-Name to be sent on every request (presumably so it can remain
+ * stateless).
+ */
+ if (ctx->initiatorName != GSS_C_NO_NAME) {
+ major = gssEapDisplayName(minor, ctx->initiatorName, &nameBuf, NULL);
+ if (GSS_ERROR(major))
+ return major;
+
+ major = gssEapRadiusAddAvp(minor, vps, PW_USER_NAME, 0, &nameBuf);
+ if (GSS_ERROR(major))
+ return major;
+
+ gss_release_buffer(&tmpMinor, &nameBuf);
+ }
+
+ *minor = 0;
+ return GSS_S_COMPLETE;
+}
+
+/*
* Pass the asserted acceptor identity to the authentication server.
*/
static OM_uint32
krbPrinc = ctx->acceptorName->krbPrincipal;
assert(krbPrinc != NULL);
- assert(krb5_princ_size(krbContext, krbPrinc) >= 2);
+ assert(KRB_PRINC_LENGTH(krbPrinc) >= 2);
/* Acceptor-Service-Name */
- krbDataToGssBuffer(krb5_princ_component(krbContext, krbPrinc, 0), &nameBuf);
+ krbPrincComponentToGssBuffer(krbPrinc, 0, &nameBuf);
major = gssEapRadiusAddAvp(minor, vps,
PW_GSS_ACCEPTOR_SERVICE_NAME,
return major;
/* Acceptor-Host-Name */
- krbDataToGssBuffer(krb5_princ_component(krbContext, krbPrinc, 1), &nameBuf);
+ krbPrincComponentToGssBuffer(krbPrinc, 1, &nameBuf);
major = gssEapRadiusAddAvp(minor, vps,
PW_GSS_ACCEPTOR_HOST_NAME,
if (GSS_ERROR(major))
return major;
- if (krb5_princ_size(krbContext, krbPrinc) > 2) {
+ if (KRB_PRINC_LENGTH(krbPrinc) > 2) {
/* Acceptor-Service-Specific */
krb5_principal_data ssiPrinc = *krbPrinc;
char *ssi;
- krb5_princ_size(krbContext, &ssiPrinc) -= 2;
- krb5_princ_name(krbContext, &ssiPrinc) += 2;
+ KRB_PRINC_LENGTH(&ssiPrinc) -= 2;
+ KRB_PRINC_NAME(&ssiPrinc) += 2;
*minor = krb5_unparse_name_flags(krbContext, &ssiPrinc,
KRB5_PRINCIPAL_UNPARSE_NO_REALM, &ssi);
krb5_free_unparsed_name(krbContext, ssi);
}
- krbDataToGssBuffer(krb5_princ_realm(krbContext, krbPrinc), &nameBuf);
+ krbPrincRealmToGssBuffer(krbPrinc, &nameBuf);
if (nameBuf.length != 0) {
/* Acceptor-Realm-Name */
major = gssEapRadiusAddAvp(minor, vps,
return GSS_S_FAILURE;
}
- if (cred != GSS_C_NO_CREDENTIAL) {
- if (cred->radiusConfigFile != NULL)
- configFile = cred->radiusConfigFile;
- if (cred->radiusConfigStanza != NULL)
- configStanza = cred->radiusConfigStanza;
- }
+ if (cred->radiusConfigFile != NULL)
+ configFile = cred->radiusConfigFile;
+ if (cred->radiusConfigStanza != NULL)
+ configStanza = cred->radiusConfigStanza;
ralloc.calloc = GSSEAP_CALLOC;
ralloc.malloc = GSSEAP_MALLOC;
goto fail;
}
- /* XXX TODO rs_conn_select_server does not exist yet */
-#if 0
if (actx->radServer != NULL) {
- if (rs_conn_select_server(actx->radConn, actx->radServer) != 0) {
+ if (rs_conn_select_peer(actx->radConn, actx->radServer) != 0) {
err = rs_err_conn_pop(actx->radConn);
goto fail;
}
}
-#endif
*minor = 0;
return GSS_S_COMPLETE;
*/
static OM_uint32
eapGssSmAcceptAuthenticate(OM_uint32 *minor,
- gss_ctx_id_t ctx,
gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
gss_buffer_t inputToken,
- gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
{
OM_uint32 major, tmpMinor;
struct rs_connection *rconn;
struct rs_request *request = NULL;
struct rs_packet *req = NULL, *resp = NULL;
struct radius_packet *frreq, *frresp;
- int sendAcceptorIdentity = 0;
if (ctx->acceptorCtx.radContext == NULL) {
/* May be NULL from an imported partial context */
major = createRadiusHandle(minor, cred, ctx);
if (GSS_ERROR(major))
goto cleanup;
+ }
- sendAcceptorIdentity = 1;
+ if (isIdentityResponseP(inputToken)) {
+ major = importInitiatorIdentity(minor, ctx, inputToken);
+ if (GSS_ERROR(major))
+ return major;
}
rconn = ctx->acceptorCtx.radConn;
- if (rs_packet_create_acc_request(rconn, &req, NULL, NULL) != 0) {
+ if (rs_packet_create_authn_request(rconn, &req, NULL, NULL) != 0) {
major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
goto cleanup;
}
frreq = rs_packet_frpkt(req);
- if (sendAcceptorIdentity) {
- major = setAcceptorIdentity(minor, ctx, &frreq->vps);
- if (GSS_ERROR(major))
- goto cleanup;
- }
+ major = setInitiatorIdentity(minor, ctx, &frreq->vps);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+ major = setAcceptorIdentity(minor, ctx, &frreq->vps);
+ if (GSS_ERROR(major))
+ goto cleanup;
major = gssEapRadiusAddAvp(minor, &frreq->vps,
PW_EAP_MESSAGE, 0, inputToken);
gss_release_buffer(&tmpMinor, &ctx->acceptorCtx.state);
}
- if (rs_request_create(rconn, &request) != 0 ||
- rs_request_send(request, req, &resp) != 0) {
+ if (rs_request_create(rconn, &request) != 0) {
+ major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
+ goto cleanup;
+ }
+
+ rs_request_add_reqpkt(request, req);
+ req = NULL;
+
+ if (rs_request_send(request, &resp) != 0) {
major = gssEapRadiusMapError(minor, rs_err_conn_pop(rconn));
goto cleanup;
}
frresp = rs_packet_frpkt(resp);
switch (frresp->code) {
- case PW_AUTHENTICATION_ACK:
case PW_ACCESS_CHALLENGE:
- major = GSS_S_CONTINUE_NEEDED;
+ case PW_AUTHENTICATION_ACK:
break;
case PW_AUTHENTICATION_REJECT:
*minor = GSSEAP_RADIUS_AUTH_FAILURE;
ctx->acceptorCtx.vps = frresp->vps;
frresp->vps = NULL;
- rs_conn_destroy(ctx->acceptorCtx.radConn);
- ctx->acceptorCtx.radConn = NULL;
-
major = acceptReadyEap(minor, ctx, cred);
if (GSS_ERROR(major))
goto cleanup;
- ctx->state = EAP_STATE_EXTENSIONS_REQ;
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
}
- *minor = 0;
major = GSS_S_CONTINUE_NEEDED;
+ *minor = 0;
+ *smFlags |= SM_FLAG_OUTPUT_TOKEN_CRITICAL;
cleanup:
- rs_request_destroy(request);
+ if (request != NULL)
+ rs_request_destroy(request);
+ if (req != NULL)
+ rs_packet_destroy(req);
+ if (resp != NULL)
+ rs_packet_destroy(resp);
+ if (GSSEAP_SM_STATE(ctx) == GSSEAP_STATE_INITIATOR_EXTS) {
+ assert(major == GSS_S_CONTINUE_NEEDED);
+
+ rs_conn_destroy(ctx->acceptorCtx.radConn);
+ ctx->acceptorCtx.radConn = NULL;
+ }
return major;
}
static OM_uint32
-eapGssSmAcceptExtensionsReq(OM_uint32 *minor,
- gss_ctx_id_t ctx,
- gss_cred_id_t cred,
- gss_buffer_t inputToken,
- gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+eapGssSmAcceptGssChannelBindings(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings,
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
{
- OM_uint32 major;
+ OM_uint32 major, tmpMinor;
+ gss_iov_buffer_desc iov[2];
+
+ iov[0].type = GSS_IOV_BUFFER_TYPE_DATA | GSS_IOV_BUFFER_FLAG_ALLOCATE;
+ iov[0].buffer.length = 0;
+ iov[0].buffer.value = NULL;
+
+ iov[1].type = GSS_IOV_BUFFER_TYPE_STREAM;
+ iov[1].buffer = *inputToken;
- major = gssEapVerifyExtensions(minor, cred, ctx, chanBindings, inputToken);
+ major = gssEapUnwrapOrVerifyMIC(minor, ctx, NULL, NULL,
+ iov, 2, TOK_TYPE_WRAP);
if (GSS_ERROR(major))
return major;
- outputToken->length = 0;
- outputToken->value = NULL;
+ if (chanBindings != GSS_C_NO_CHANNEL_BINDINGS &&
+ !bufferEqual(&iov[0].buffer, &chanBindings->application_data)) {
+ major = GSS_S_BAD_BINDINGS;
+ *minor = GSSEAP_BINDINGS_MISMATCH;
+ } else {
+ major = GSS_S_CONTINUE_NEEDED;
+ *minor = 0;
+ }
- ctx->state = EAP_STATE_EXTENSIONS_RESP;
+ gss_release_buffer(&tmpMinor, &iov[0].buffer);
- *minor = 0;
- return GSS_S_CONTINUE_NEEDED;
+ return major;
}
+#ifdef GSSEAP_ENABLE_REAUTH
static OM_uint32
-eapGssSmAcceptExtensionsResp(OM_uint32 *minor,
- gss_ctx_id_t ctx,
- gss_cred_id_t cred,
- gss_buffer_t inputToken,
- gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+eapGssSmAcceptReauthCreds(OM_uint32 *minor,
+ gss_cred_id_t cred,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
{
OM_uint32 major;
- major = gssEapMakeExtensions(minor, cred, ctx, chanBindings, outputToken);
- if (GSS_ERROR(major))
- return major;
-
- ctx->state = EAP_STATE_ESTABLISHED;
+ /*
+ * If we're built with fast reauthentication enabled, then
+ * fabricate a ticket from the initiator to ourselves.
+ */
+ major = gssEapMakeReauthCreds(minor, ctx, cred, outputToken);
+ if (major == GSS_S_UNAVAILABLE)
+ major = GSS_S_COMPLETE;
+ if (major == GSS_S_COMPLETE)
+ major = GSS_S_CONTINUE_NEEDED;
- *minor = 0;
- return GSS_S_COMPLETE;
+ return major;
}
+#endif
static OM_uint32
-eapGssSmAcceptEstablished(OM_uint32 *minor,
- gss_ctx_id_t ctx,
- gss_cred_id_t cred,
- gss_buffer_t inputToken,
- gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+eapGssSmAcceptCompleteInitiatorExts(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags GSSEAP_UNUSED)
{
- /* Called with already established context */
- *minor = GSSEAP_CONTEXT_ESTABLISHED;
- return GSS_S_BAD_STATUS;
+ GSSEAP_SM_TRANSITION_NEXT(ctx);
+
+ *minor = 0;
+
+ return GSS_S_CONTINUE_NEEDED;
}
static OM_uint32
-makeErrorToken(OM_uint32 *minor,
- OM_uint32 majorStatus,
- OM_uint32 minorStatus,
- gss_buffer_t outputToken)
+eapGssSmAcceptCompleteAcceptorExts(OM_uint32 *minor,
+ gss_cred_id_t cred GSSEAP_UNUSED,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech GSSEAP_UNUSED,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
+ gss_channel_bindings_t chanBindings GSSEAP_UNUSED,
+ gss_buffer_t inputToken GSSEAP_UNUSED,
+ gss_buffer_t outputToken GSSEAP_UNUSED,
+ OM_uint32 *smFlags)
{
- unsigned char errorData[8];
- gss_buffer_desc errorBuffer;
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
- assert(GSS_ERROR(majorStatus));
-
- /*
- * Only return error codes that the initiator could have caused,
- * to avoid information leakage.
- */
- switch (minorStatus) {
- case GSSEAP_WRONG_SIZE:
- case GSSEAP_WRONG_MECH:
- case GSSEAP_BAD_TOK_HEADER:
- case GSSEAP_TOK_TRUNC:
- case GSSEAP_BAD_DIRECTION:
- case GSSEAP_WRONG_TOK_ID:
- case GSSEAP_CRIT_EXT_UNAVAILABLE:
- case GSSEAP_MISSING_REQUIRED_EXT:
- case GSSEAP_KEY_UNAVAILABLE:
- case GSSEAP_KEY_TOO_SHORT:
- case GSSEAP_RADIUS_AUTH_FAILURE:
- case GSSEAP_UNKNOWN_RADIUS_CODE:
- case GSSEAP_MISSING_EAP_REQUEST:
- break;
- default:
- if (IS_RADIUS_ERROR(minorStatus))
- /* Squash RADIUS error codes */
- minorStatus = GSSEAP_GENERIC_RADIUS_ERROR;
- else
- /* Don't return system error codes */
- return GSS_S_COMPLETE;
- }
-
- minorStatus -= ERROR_TABLE_BASE_eapg;
-
- store_uint32_be(majorStatus, &errorData[0]);
- store_uint32_be(minorStatus, &errorData[4]);
-
- errorBuffer.length = sizeof(errorData);
- errorBuffer.value = errorData;
+ *minor = 0;
+ *smFlags |= SM_FLAG_FORCE_SEND_TOKEN;
- return duplicateBuffer(minor, &errorBuffer, outputToken);
+ return GSS_S_COMPLETE;
}
-static struct gss_eap_acceptor_sm {
- enum gss_eap_token_type inputTokenType;
- enum gss_eap_token_type outputTokenType;
- OM_uint32 (*processToken)(OM_uint32 *,
- gss_ctx_id_t,
- gss_cred_id_t,
- gss_buffer_t,
- gss_channel_bindings_t,
- gss_buffer_t);
-} eapGssAcceptorSm[] = {
- { TOK_TYPE_EAP_RESP, TOK_TYPE_EAP_REQ, eapGssSmAcceptIdentity },
- { TOK_TYPE_EAP_RESP, TOK_TYPE_EAP_REQ, eapGssSmAcceptAuthenticate },
- { TOK_TYPE_EXT_REQ, TOK_TYPE_NONE, eapGssSmAcceptExtensionsReq },
- { TOK_TYPE_NONE, TOK_TYPE_EXT_RESP, eapGssSmAcceptExtensionsResp },
- { TOK_TYPE_NONE, TOK_TYPE_NONE, eapGssSmAcceptEstablished },
- { TOK_TYPE_NONE, TOK_TYPE_CONTEXT_ERR, NULL },
+static struct gss_eap_sm eapGssAcceptorSm[] = {
+ {
+ ITOK_TYPE_ACCEPTOR_NAME_REQ,
+ ITOK_TYPE_ACCEPTOR_NAME_RESP,
+ GSSEAP_STATE_INITIAL,
+ 0,
+ eapGssSmAcceptAcceptorName
+ },
+#ifdef GSSEAP_DEBUG
+ {
+ ITOK_TYPE_VENDOR_INFO,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_INITIAL,
+ 0,
+ eapGssSmAcceptVendorInfo,
+ },
+#endif
#ifdef GSSEAP_ENABLE_REAUTH
- { TOK_TYPE_GSS_REAUTH, TOK_TYPE_GSS_REAUTH, eapGssSmAcceptGssReauth },
+ {
+ ITOK_TYPE_REAUTH_REQ,
+ ITOK_TYPE_REAUTH_RESP,
+ GSSEAP_STATE_INITIAL,
+ 0,
+ eapGssSmAcceptGssReauth,
+ },
#endif
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_EAP_REQ,
+ GSSEAP_STATE_INITIAL,
+ SM_ITOK_FLAG_REQUIRED,
+ eapGssSmAcceptIdentity,
+ },
+ {
+ ITOK_TYPE_EAP_RESP,
+ ITOK_TYPE_EAP_REQ,
+ GSSEAP_STATE_AUTHENTICATE,
+ SM_ITOK_FLAG_REQUIRED,
+ eapGssSmAcceptAuthenticate
+ },
+ {
+ ITOK_TYPE_GSS_CHANNEL_BINDINGS,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_INITIATOR_EXTS,
+ SM_ITOK_FLAG_REQUIRED,
+ eapGssSmAcceptGssChannelBindings,
+ },
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_INITIATOR_EXTS,
+ 0,
+ eapGssSmAcceptCompleteInitiatorExts,
+ },
+#ifdef GSSEAP_ENABLE_REAUTH
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_REAUTH_CREDS,
+ GSSEAP_STATE_ACCEPTOR_EXTS,
+ 0,
+ eapGssSmAcceptReauthCreds,
+ },
+#endif
+ {
+ ITOK_TYPE_NONE,
+ ITOK_TYPE_NONE,
+ GSSEAP_STATE_ACCEPTOR_EXTS,
+ 0,
+ eapGssSmAcceptCompleteAcceptorExts
+ },
};
OM_uint32
OM_uint32 *time_rec,
gss_cred_id_t *delegated_cred_handle)
{
- OM_uint32 major;
- OM_uint32 tmpMajor, tmpMinor;
+ OM_uint32 major, tmpMinor;
gss_ctx_id_t ctx = *context_handle;
- struct gss_eap_acceptor_sm *sm = NULL;
- gss_buffer_desc innerInputToken = GSS_C_EMPTY_BUFFER;
- gss_buffer_desc innerOutputToken = GSS_C_EMPTY_BUFFER;
- enum gss_eap_token_type tokType;
- int initialContextToken = 0;
*minor = 0;
output_token->length = 0;
output_token->value = NULL;
+ if (src_name != NULL)
+ *src_name = GSS_C_NO_NAME;
+
if (input_token == GSS_C_NO_BUFFER || input_token->length == 0) {
*minor = GSSEAP_TOK_TRUNC;
return GSS_S_DEFECTIVE_TOKEN;
if (GSS_ERROR(major))
return major;
- initialContextToken = 1;
*context_handle = ctx;
}
GSSEAP_MUTEX_LOCK(&ctx->mutex);
- /* Validate and lock credentials */
- if (cred != GSS_C_NO_CREDENTIAL) {
- GSSEAP_MUTEX_LOCK(&cred->mutex);
-
- if ((cred->flags & CRED_FLAG_ACCEPT) == 0) {
- *minor = GSSEAP_CRED_USAGE_MISMATCH;
- major = GSS_S_NO_CRED;
- goto cleanup;
+ if (cred == GSS_C_NO_CREDENTIAL) {
+ if (ctx->defaultCred == GSS_C_NO_CREDENTIAL) {
+ major = gssEapAcquireCred(minor,
+ GSS_C_NO_NAME,
+ GSS_C_NO_BUFFER,
+ GSS_C_INDEFINITE,
+ GSS_C_NO_OID_SET,
+ GSS_C_ACCEPT,
+ &ctx->defaultCred,
+ NULL,
+ NULL);
+ if (GSS_ERROR(major))
+ goto cleanup;
}
- }
- sm = &eapGssAcceptorSm[ctx->state];
+ cred = ctx->defaultCred;
+ }
- major = gssEapVerifyToken(minor, ctx, input_token,
- &tokType, &innerInputToken);
- if (GSS_ERROR(major))
- goto cleanup;
+ GSSEAP_MUTEX_LOCK(&cred->mutex);
- if (!gssEapCredAvailable(cred, ctx->mechanismUsed)) {
- *minor = GSSEAP_CRED_MECH_MISMATCH;
- major = GSS_S_BAD_MECH;
- goto cleanup;
+ if (cred->name != GSS_C_NO_NAME) {
+ major = gssEapDuplicateName(minor, cred->name, &ctx->acceptorName);
+ if (GSS_ERROR(major))
+ goto cleanup;
}
-#ifdef GSSEAP_ENABLE_REAUTH
- /*
- * If we're built with fast reauthentication support, it's valid
- * for an initiator to send a GSS reauthentication token as its
- * initial context token, causing us to short-circuit the state
- * machine and process Kerberos GSS messages instead.
- */
- if (tokType == TOK_TYPE_GSS_REAUTH && initialContextToken) {
- ctx->state = EAP_STATE_KRB_REAUTH_GSS;
- } else
-#endif
- if (tokType != sm->inputTokenType) {
- *minor = GSSEAP_WRONG_TOK_ID;
- major = GSS_S_DEFECTIVE_TOKEN;
+ major = gssEapSmStep(minor,
+ cred,
+ ctx,
+ GSS_C_NO_NAME,
+ GSS_C_NO_OID,
+ 0,
+ GSS_C_INDEFINITE,
+ input_chan_bindings,
+ input_token,
+ output_token,
+ eapGssAcceptorSm,
+ sizeof(eapGssAcceptorSm) / sizeof(eapGssAcceptorSm[0]));
+ if (GSS_ERROR(major))
goto cleanup;
- }
-
- do {
- sm = &eapGssAcceptorSm[ctx->state];
-
- major = (sm->processToken)(minor,
- ctx,
- cred,
- &innerInputToken,
- input_chan_bindings,
- &innerOutputToken);
- if (GSS_ERROR(major)) {
- /* Possibly generate an error token */
- tmpMajor = makeErrorToken(&tmpMinor, major, *minor, &innerOutputToken);
- if (GSS_ERROR(tmpMajor)) {
- major = tmpMajor;
- goto cleanup;
- }
-
- sm = &eapGssAcceptorSm[EAP_STATE_ERROR];
- goto send_token;
- }
- } while (major == GSS_S_CONTINUE_NEEDED && innerOutputToken.length == 0);
if (mech_type != NULL) {
if (!gssEapInternalizeOid(ctx->mechanismUsed, mech_type))
}
}
- assert(ctx->state == EAP_STATE_ESTABLISHED || major == GSS_S_CONTINUE_NEEDED);
-
-send_token:
- if (innerOutputToken.value != NULL) {
- tmpMajor = gssEapMakeToken(&tmpMinor, ctx, &innerOutputToken,
- sm->outputTokenType, output_token);
- if (GSS_ERROR(tmpMajor)) {
- major = tmpMajor;
- *minor = tmpMinor;
- goto cleanup;
- }
- }
+ assert(CTX_IS_ESTABLISHED(ctx) || major == GSS_S_CONTINUE_NEEDED);
cleanup:
if (cred != GSS_C_NO_CREDENTIAL)
if (GSS_ERROR(major))
gssEapReleaseContext(&tmpMinor, context_handle);
- gss_release_buffer(&tmpMinor, &innerOutputToken);
-
return major;
}
{
OM_uint32 major;
- major = gssEapGlueToMechName(minor, initiator, &ctx->initiatorName);
+ major = gssEapGlueToMechName(minor, ctx, initiator, &ctx->initiatorName);
if (GSS_ERROR(major))
return major;
- if (cred != GSS_C_NO_CREDENTIAL && cred->name != GSS_C_NO_NAME) {
- major = gssEapDuplicateName(minor, cred->name, &ctx->acceptorName);
- if (GSS_ERROR(major))
- return major;
- }
-
major = gssEapReauthComplete(minor, ctx, cred, mech, timeRec);
if (GSS_ERROR(major))
return major;
- ctx->state = EAP_STATE_ESTABLISHED;
-
*minor = 0;
return GSS_S_COMPLETE;
}
static OM_uint32
eapGssSmAcceptGssReauth(OM_uint32 *minor,
- gss_ctx_id_t ctx,
gss_cred_id_t cred,
- gss_buffer_t inputToken,
+ gss_ctx_id_t ctx,
+ gss_name_t target GSSEAP_UNUSED,
+ gss_OID mech,
+ OM_uint32 reqFlags GSSEAP_UNUSED,
+ OM_uint32 timeReq GSSEAP_UNUSED,
gss_channel_bindings_t chanBindings,
- gss_buffer_t outputToken)
+ gss_buffer_t inputToken,
+ gss_buffer_t outputToken,
+ OM_uint32 *smFlags)
{
OM_uint32 major, tmpMinor;
- gss_cred_id_t krbCred = GSS_C_NO_CREDENTIAL;
gss_name_t krbInitiator = GSS_C_NO_NAME;
- gss_OID mech = GSS_C_NO_OID;
OM_uint32 gssFlags, timeRec = GSS_C_INDEFINITE;
- ctx->flags |= CTX_FLAG_KRB_REAUTH_GSS;
+ /*
+ * If we're built with fast reauthentication support, it's valid
+ * for an initiator to send a GSS reauthentication token as its
+ * initial context token, causing us to short-circuit the state
+ * machine and process Kerberos GSS messages instead.
+ */
- if (cred != GSS_C_NO_CREDENTIAL)
- krbCred = cred->krbCred;
+ ctx->flags |= CTX_FLAG_KRB_REAUTH;
major = gssAcceptSecContext(minor,
&ctx->kerberosCtx,
- krbCred,
+ cred->krbCred,
inputToken,
chanBindings,
&krbInitiator,
if (major == GSS_S_COMPLETE) {
major = acceptReadyKrb(minor, ctx, cred,
krbInitiator, mech, timeRec);
+ if (major == GSS_S_COMPLETE) {
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_ESTABLISHED);
+ }
+ ctx->gssFlags = gssFlags;
+ } else if (GSS_ERROR(major) &&
+ (*smFlags & SM_FLAG_INPUT_TOKEN_CRITICAL) == 0) {
+ /* pretend reauthentication attempt never happened */
+ gssDeleteSecContext(&tmpMinor, &ctx->kerberosCtx, GSS_C_NO_BUFFER);
+ ctx->flags &= ~(CTX_FLAG_KRB_REAUTH);
+ GSSEAP_SM_TRANSITION(ctx, GSSEAP_STATE_INITIAL);
+ major = GSS_S_CONTINUE_NEEDED;
}
- ctx->gssFlags = gssFlags;
-
gssReleaseName(&tmpMinor, &krbInitiator);
return major;
projects / mech_eap.git / blobdiff