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https://github.com/samba-team/samba.git
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3d96b093b7
Signed-off-by: Stefan Metzmacher <metze@samba.org> Reviewed-by: Andreas Schneider <asn@samba.org>
1720 lines
56 KiB
C
1720 lines
56 KiB
C
/*
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Unix SMB/CIFS implementation.
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Kerberos backend for GENSEC
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Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
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Copyright (C) Stefan Metzmacher <metze@samba.org> 2004-2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include <tevent.h>
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#include "lib/util/tevent_ntstatus.h"
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#include "lib/events/events.h"
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#include "system/kerberos.h"
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#include "system/gssapi.h"
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#include "auth/kerberos/kerberos.h"
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#include "librpc/gen_ndr/krb5pac.h"
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#include "auth/auth.h"
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#include <ldb.h>
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#include "auth/auth_sam.h"
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#include "librpc/gen_ndr/dcerpc.h"
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#include "auth/credentials/credentials.h"
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#include "auth/credentials/credentials_krb5.h"
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#include "auth/gensec/gensec.h"
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#include "auth/gensec/gensec_internal.h"
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#include "auth/gensec/gensec_proto.h"
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#include "auth/gensec/gensec_toplevel_proto.h"
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#include "param/param.h"
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#include "auth/session_proto.h"
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#include "gensec_gssapi.h"
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#include "lib/util/util_net.h"
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#include "auth/kerberos/pac_utils.h"
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#include "auth/kerberos/gssapi_helper.h"
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#ifndef gss_mech_spnego
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gss_OID_desc spnego_mech_oid_desc =
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{ 6, discard_const_p(void, "\x2b\x06\x01\x05\x05\x02") };
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#define gss_mech_spnego (&spnego_mech_oid_desc)
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#endif
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_PUBLIC_ NTSTATUS gensec_gssapi_init(TALLOC_CTX *);
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static size_t gensec_gssapi_max_input_size(struct gensec_security *gensec_security);
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static size_t gensec_gssapi_max_wrapped_size(struct gensec_security *gensec_security);
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static size_t gensec_gssapi_sig_size(struct gensec_security *gensec_security, size_t data_size);
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static int gensec_gssapi_destructor(struct gensec_gssapi_state *gensec_gssapi_state)
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{
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OM_uint32 min_stat;
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if (gensec_gssapi_state->delegated_cred_handle != GSS_C_NO_CREDENTIAL) {
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gss_release_cred(&min_stat,
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&gensec_gssapi_state->delegated_cred_handle);
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}
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if (gensec_gssapi_state->gssapi_context != GSS_C_NO_CONTEXT) {
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gss_delete_sec_context(&min_stat,
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&gensec_gssapi_state->gssapi_context,
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GSS_C_NO_BUFFER);
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}
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if (gensec_gssapi_state->server_name != GSS_C_NO_NAME) {
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gss_release_name(&min_stat,
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&gensec_gssapi_state->server_name);
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}
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if (gensec_gssapi_state->client_name != GSS_C_NO_NAME) {
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gss_release_name(&min_stat,
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&gensec_gssapi_state->client_name);
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}
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return 0;
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}
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static NTSTATUS gensec_gssapi_setup_server_principal(TALLOC_CTX *mem_ctx,
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const char *target_principal,
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const char *service,
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const char *hostname,
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const char *realm,
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const gss_OID mech,
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char **pserver_principal,
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gss_name_t *pserver_name)
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{
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char *server_principal = NULL;
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gss_buffer_desc name_token;
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gss_OID name_type;
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OM_uint32 maj_stat, min_stat = 0;
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if (target_principal != NULL) {
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server_principal = talloc_strdup(mem_ctx, target_principal);
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name_type = GSS_C_NULL_OID;
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} else {
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server_principal = talloc_asprintf(mem_ctx,
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"%s/%s@%s",
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service, hostname, realm);
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name_type = GSS_C_NT_USER_NAME;
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}
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if (server_principal == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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name_token.value = (uint8_t *)server_principal;
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name_token.length = strlen(server_principal);
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maj_stat = gss_import_name(&min_stat,
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&name_token,
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name_type,
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pserver_name);
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if (maj_stat) {
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DBG_WARNING("GSS Import name of %s failed: %s\n",
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server_principal,
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gssapi_error_string(mem_ctx,
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maj_stat,
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min_stat,
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mech));
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TALLOC_FREE(server_principal);
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return NT_STATUS_INVALID_PARAMETER;
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}
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*pserver_principal = server_principal;
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return NT_STATUS_OK;
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}
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static NTSTATUS gensec_gssapi_start(struct gensec_security *gensec_security)
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{
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struct gensec_gssapi_state *gensec_gssapi_state;
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krb5_error_code ret;
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#ifdef SAMBA4_USES_HEIMDAL
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const char *realm;
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#endif
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gensec_gssapi_state = talloc_zero(gensec_security, struct gensec_gssapi_state);
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if (!gensec_gssapi_state) {
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return NT_STATUS_NO_MEMORY;
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}
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gensec_security->private_data = gensec_gssapi_state;
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gensec_gssapi_state->gssapi_context = GSS_C_NO_CONTEXT;
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/* TODO: Fill in channel bindings */
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gensec_gssapi_state->input_chan_bindings = GSS_C_NO_CHANNEL_BINDINGS;
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gensec_gssapi_state->server_name = GSS_C_NO_NAME;
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gensec_gssapi_state->client_name = GSS_C_NO_NAME;
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gensec_gssapi_state->gss_want_flags = 0;
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gensec_gssapi_state->expire_time = GENSEC_EXPIRE_TIME_INFINITY;
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if (gensec_setting_bool(gensec_security->settings, "gensec_gssapi", "delegation_by_kdc_policy", true)) {
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gensec_gssapi_state->gss_want_flags |= GSS_C_DELEG_POLICY_FLAG;
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}
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if (gensec_setting_bool(gensec_security->settings, "gensec_gssapi", "mutual", true)) {
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gensec_gssapi_state->gss_want_flags |= GSS_C_MUTUAL_FLAG;
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}
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if (gensec_setting_bool(gensec_security->settings, "gensec_gssapi", "delegation", false)) {
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gensec_gssapi_state->gss_want_flags |= GSS_C_DELEG_FLAG;
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}
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if (gensec_setting_bool(gensec_security->settings, "gensec_gssapi", "replay", true)) {
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gensec_gssapi_state->gss_want_flags |= GSS_C_REPLAY_FLAG;
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}
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if (gensec_setting_bool(gensec_security->settings, "gensec_gssapi", "sequence", true)) {
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gensec_gssapi_state->gss_want_flags |= GSS_C_SEQUENCE_FLAG;
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}
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if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) {
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gensec_gssapi_state->gss_want_flags |= GSS_C_INTEG_FLAG;
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}
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if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
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gensec_gssapi_state->gss_want_flags |= GSS_C_INTEG_FLAG;
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}
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if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
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gensec_gssapi_state->gss_want_flags |= GSS_C_INTEG_FLAG;
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gensec_gssapi_state->gss_want_flags |= GSS_C_CONF_FLAG;
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}
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if (gensec_security->want_features & GENSEC_FEATURE_DCE_STYLE) {
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gensec_gssapi_state->gss_want_flags |= GSS_C_DCE_STYLE;
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}
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gensec_gssapi_state->gss_got_flags = 0;
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switch (gensec_security->ops->auth_type) {
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case DCERPC_AUTH_TYPE_SPNEGO:
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gensec_gssapi_state->gss_oid = gss_mech_spnego;
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break;
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case DCERPC_AUTH_TYPE_KRB5:
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default:
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gensec_gssapi_state->gss_oid =
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discard_const_p(void, gss_mech_krb5);
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break;
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}
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ret = smb_krb5_init_context(gensec_gssapi_state,
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gensec_security->settings->lp_ctx,
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&gensec_gssapi_state->smb_krb5_context);
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if (ret) {
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DEBUG(1,("gensec_gssapi_start: smb_krb5_init_context failed (%s)\n",
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error_message(ret)));
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talloc_free(gensec_gssapi_state);
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return NT_STATUS_INTERNAL_ERROR;
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}
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gensec_gssapi_state->client_cred = NULL;
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gensec_gssapi_state->server_cred = NULL;
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gensec_gssapi_state->delegated_cred_handle = GSS_C_NO_CREDENTIAL;
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gensec_gssapi_state->sasl = false;
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gensec_gssapi_state->sasl_state = STAGE_GSS_NEG;
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gensec_gssapi_state->sasl_protection = 0;
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gensec_gssapi_state->max_wrap_buf_size
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= gensec_setting_int(gensec_security->settings, "gensec_gssapi", "max wrap buf size", 65536);
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gensec_gssapi_state->gss_exchange_count = 0;
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gensec_gssapi_state->sig_size = 0;
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talloc_set_destructor(gensec_gssapi_state, gensec_gssapi_destructor);
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#ifdef SAMBA4_USES_HEIMDAL
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realm = lpcfg_realm(gensec_security->settings->lp_ctx);
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if (realm != NULL) {
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ret = gsskrb5_set_default_realm(realm);
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if (ret) {
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DEBUG(1,("gensec_gssapi_start: gsskrb5_set_default_realm failed\n"));
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talloc_free(gensec_gssapi_state);
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return NT_STATUS_INTERNAL_ERROR;
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}
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}
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/* don't do DNS lookups of any kind, it might/will fail for a netbios name */
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ret = gsskrb5_set_dns_canonicalize(gensec_setting_bool(gensec_security->settings, "krb5", "set_dns_canonicalize", false));
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if (ret) {
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DEBUG(1,("gensec_gssapi_start: gsskrb5_set_dns_canonicalize failed\n"));
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talloc_free(gensec_gssapi_state);
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return NT_STATUS_INTERNAL_ERROR;
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}
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#endif
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return NT_STATUS_OK;
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}
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static NTSTATUS gensec_gssapi_server_start(struct gensec_security *gensec_security)
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{
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NTSTATUS nt_status;
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int ret;
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struct gensec_gssapi_state *gensec_gssapi_state;
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struct cli_credentials *machine_account;
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struct gssapi_creds_container *gcc;
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nt_status = gensec_gssapi_start(gensec_security);
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if (!NT_STATUS_IS_OK(nt_status)) {
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return nt_status;
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}
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gensec_gssapi_state = talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
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machine_account = gensec_get_credentials(gensec_security);
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if (!machine_account) {
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DEBUG(3, ("No machine account credentials specified\n"));
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return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
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} else {
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ret = cli_credentials_get_server_gss_creds(machine_account,
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gensec_security->settings->lp_ctx, &gcc);
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if (ret) {
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DEBUG(1, ("Acquiring acceptor credentials failed: %s\n",
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error_message(ret)));
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return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
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}
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}
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gensec_gssapi_state->server_cred = gcc;
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return NT_STATUS_OK;
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}
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static NTSTATUS gensec_gssapi_sasl_server_start(struct gensec_security *gensec_security)
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{
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NTSTATUS nt_status;
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struct gensec_gssapi_state *gensec_gssapi_state;
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nt_status = gensec_gssapi_server_start(gensec_security);
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if (NT_STATUS_IS_OK(nt_status)) {
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gensec_gssapi_state = talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
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gensec_gssapi_state->sasl = true;
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}
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return nt_status;
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}
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static NTSTATUS gensec_gssapi_client_creds(struct gensec_security *gensec_security,
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struct tevent_context *ev)
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{
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struct gensec_gssapi_state *gensec_gssapi_state;
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struct gssapi_creds_container *gcc;
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struct cli_credentials *creds = gensec_get_credentials(gensec_security);
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const char *error_string;
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int ret;
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gensec_gssapi_state = talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
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/* Only run this the first time the update() call is made */
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if (gensec_gssapi_state->client_cred) {
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return NT_STATUS_OK;
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}
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ret = cli_credentials_get_client_gss_creds(creds,
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ev,
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gensec_security->settings->lp_ctx, &gcc, &error_string);
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switch (ret) {
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case 0:
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break;
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case EINVAL:
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DEBUG(3, ("Cannot obtain client GSS credentials we need to contact %s : %s\n", gensec_gssapi_state->target_principal, error_string));
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return NT_STATUS_INVALID_PARAMETER;
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case KRB5KDC_ERR_PREAUTH_FAILED:
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case KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN:
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case KRB5KRB_AP_ERR_BAD_INTEGRITY:
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DEBUG(1, ("Wrong username or password: %s\n", error_string));
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return NT_STATUS_LOGON_FAILURE;
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case KRB5KDC_ERR_CLIENT_REVOKED:
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DEBUG(1, ("Account locked out: %s\n", error_string));
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return NT_STATUS_ACCOUNT_LOCKED_OUT;
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case KRB5_REALM_UNKNOWN:
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case KRB5_KDC_UNREACH:
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DEBUG(3, ("Cannot reach a KDC we require to contact %s : %s\n", gensec_gssapi_state->target_principal, error_string));
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return NT_STATUS_NO_LOGON_SERVERS;
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case KRB5_CC_NOTFOUND:
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case KRB5_CC_END:
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DEBUG(2, ("Error obtaining ticket we require to contact %s: (possibly due to clock skew between us and the KDC) %s\n", gensec_gssapi_state->target_principal, error_string));
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return NT_STATUS_TIME_DIFFERENCE_AT_DC;
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default:
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DEBUG(1, ("Aquiring initiator credentials failed: %s\n", error_string));
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return NT_STATUS_UNSUCCESSFUL;
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}
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gensec_gssapi_state->client_cred = gcc;
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if (!talloc_reference(gensec_gssapi_state, gcc)) {
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return NT_STATUS_NO_MEMORY;
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}
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return NT_STATUS_OK;
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}
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|
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static NTSTATUS gensec_gssapi_client_start(struct gensec_security *gensec_security)
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{
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struct gensec_gssapi_state *gensec_gssapi_state;
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struct cli_credentials *creds = gensec_get_credentials(gensec_security);
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NTSTATUS nt_status;
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const char *target_principal = NULL;
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const char *hostname = gensec_get_target_hostname(gensec_security);
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const char *service = gensec_get_target_service(gensec_security);
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const char *realm = cli_credentials_get_realm(creds);
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target_principal = gensec_get_target_principal(gensec_security);
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if (target_principal != NULL) {
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goto do_start;
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}
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if (!hostname) {
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DEBUG(3, ("No hostname for target computer passed in, cannot use kerberos for this connection\n"));
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return NT_STATUS_INVALID_PARAMETER;
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}
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if (is_ipaddress(hostname)) {
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DEBUG(2, ("Cannot do GSSAPI to an IP address\n"));
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return NT_STATUS_INVALID_PARAMETER;
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}
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if (strcmp(hostname, "localhost") == 0) {
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DEBUG(2, ("GSSAPI to 'localhost' does not make sense\n"));
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return NT_STATUS_INVALID_PARAMETER;
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}
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|
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if (realm == NULL) {
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char *cred_name = cli_credentials_get_unparsed_name(creds,
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gensec_security);
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DEBUG(3, ("cli_credentials(%s) without realm, "
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"cannot use kerberos for this connection %s/%s\n",
|
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cred_name, service, hostname));
|
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TALLOC_FREE(cred_name);
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return NT_STATUS_INVALID_PARAMETER;
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}
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do_start:
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nt_status = gensec_gssapi_start(gensec_security);
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if (!NT_STATUS_IS_OK(nt_status)) {
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return nt_status;
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}
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gensec_gssapi_state = talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
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if (cli_credentials_get_impersonate_principal(creds)) {
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gensec_gssapi_state->gss_want_flags &= ~(GSS_C_DELEG_FLAG|GSS_C_DELEG_POLICY_FLAG);
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}
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|
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return NT_STATUS_OK;
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}
|
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|
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static NTSTATUS gensec_gssapi_sasl_client_start(struct gensec_security *gensec_security)
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{
|
|
NTSTATUS nt_status;
|
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struct gensec_gssapi_state *gensec_gssapi_state;
|
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nt_status = gensec_gssapi_client_start(gensec_security);
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|
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if (NT_STATUS_IS_OK(nt_status)) {
|
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gensec_gssapi_state = talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
gensec_gssapi_state->sasl = true;
|
|
}
|
|
return nt_status;
|
|
}
|
|
|
|
static NTSTATUS gensec_gssapi_update_internal(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *out_mem_ctx,
|
|
struct tevent_context *ev,
|
|
const DATA_BLOB in, DATA_BLOB *out)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE;
|
|
OM_uint32 maj_stat, min_stat;
|
|
OM_uint32 min_stat2;
|
|
gss_buffer_desc input_token = { 0, NULL };
|
|
gss_buffer_desc output_token = { 0, NULL };
|
|
struct cli_credentials *cli_creds = gensec_get_credentials(gensec_security);
|
|
const char *target_principal = gensec_get_target_principal(gensec_security);
|
|
const char *hostname = gensec_get_target_hostname(gensec_security);
|
|
const char *service = gensec_get_target_service(gensec_security);
|
|
const char *client_realm = cli_credentials_get_realm(cli_creds);
|
|
const char *server_realm = NULL;
|
|
gss_OID gss_oid_p = NULL;
|
|
OM_uint32 time_req = 0;
|
|
OM_uint32 time_rec = 0;
|
|
struct timeval tv;
|
|
|
|
time_req = gensec_setting_int(gensec_security->settings,
|
|
"gensec_gssapi", "requested_life_time",
|
|
time_req);
|
|
|
|
input_token.length = in.length;
|
|
input_token.value = in.data;
|
|
|
|
switch (gensec_gssapi_state->sasl_state) {
|
|
case STAGE_GSS_NEG:
|
|
{
|
|
switch (gensec_security->gensec_role) {
|
|
case GENSEC_CLIENT:
|
|
{
|
|
#ifdef SAMBA4_USES_HEIMDAL
|
|
struct gsskrb5_send_to_kdc send_to_kdc;
|
|
krb5_error_code ret;
|
|
#else
|
|
bool fallback = false;
|
|
#endif
|
|
|
|
nt_status = gensec_gssapi_client_creds(gensec_security, ev);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
return nt_status;
|
|
}
|
|
|
|
#ifdef SAMBA4_USES_HEIMDAL
|
|
send_to_kdc.func = smb_krb5_send_and_recv_func;
|
|
send_to_kdc.ptr = ev;
|
|
|
|
min_stat = gsskrb5_set_send_to_kdc(&send_to_kdc);
|
|
if (min_stat) {
|
|
DEBUG(1,("gensec_gssapi_update: gsskrb5_set_send_to_kdc failed\n"));
|
|
return NT_STATUS_INTERNAL_ERROR;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* With credentials for
|
|
* administrator@FOREST1.EXAMPLE.COM this patch changes
|
|
* the target_principal for the ldap service of host
|
|
* dc2.forest2.example.com from
|
|
*
|
|
* ldap/dc2.forest2.example.com@FOREST1.EXAMPLE.COM
|
|
*
|
|
* to
|
|
*
|
|
* ldap/dc2.forest2.example.com@FOREST2.EXAMPLE.COM
|
|
*
|
|
* Typically
|
|
* ldap/dc2.forest2.example.com@FOREST1.EXAMPLE.COM
|
|
* should be used in order to allow the KDC of
|
|
* FOREST1.EXAMPLE.COM to generate a referral ticket
|
|
* for krbtgt/FOREST2.EXAMPLE.COM@FOREST1.EXAMPLE.COM.
|
|
*
|
|
* The problem is that KDCs only return such referral
|
|
* tickets if there's a forest trust between
|
|
* FOREST1.EXAMPLE.COM and FOREST2.EXAMPLE.COM. If
|
|
* there's only an external domain trust between
|
|
* FOREST1.EXAMPLE.COM and FOREST2.EXAMPLE.COM the KDC
|
|
* of FOREST1.EXAMPLE.COM will respond with
|
|
* S_PRINCIPAL_UNKNOWN when being asked for
|
|
* ldap/dc2.forest2.example.com@FOREST1.EXAMPLE.COM.
|
|
*
|
|
* In the case of an external trust the client can
|
|
* still ask explicitly for
|
|
* krbtgt/FOREST2.EXAMPLE.COM@FOREST1.EXAMPLE.COM and
|
|
* the KDC of FOREST1.EXAMPLE.COM will generate it.
|
|
*
|
|
* From there the client can use the
|
|
* krbtgt/FOREST2.EXAMPLE.COM@FOREST1.EXAMPLE.COM
|
|
* ticket and ask a KDC of FOREST2.EXAMPLE.COM for a
|
|
* service ticket for
|
|
* ldap/dc2.forest2.example.com@FOREST2.EXAMPLE.COM.
|
|
*
|
|
* With Heimdal we'll get the fallback on
|
|
* S_PRINCIPAL_UNKNOWN behavior when we pass
|
|
* ldap/dc2.forest2.example.com@FOREST2.EXAMPLE.COM as
|
|
* target principal. As _krb5_get_cred_kdc_any() first
|
|
* calls get_cred_kdc_referral() (which always starts
|
|
* with the client realm) and falls back to
|
|
* get_cred_kdc_capath() (which starts with the given
|
|
* realm).
|
|
*
|
|
* MIT krb5 only tries the given realm of the target
|
|
* principal, if we want to autodetect support for
|
|
* transitive forest trusts, would have to do the
|
|
* fallback ourself.
|
|
*/
|
|
#ifndef SAMBA4_USES_HEIMDAL
|
|
if (gensec_gssapi_state->server_name == NULL) {
|
|
nt_status = gensec_gssapi_setup_server_principal(gensec_gssapi_state,
|
|
target_principal,
|
|
service,
|
|
hostname,
|
|
client_realm,
|
|
gensec_gssapi_state->gss_oid,
|
|
&gensec_gssapi_state->target_principal,
|
|
&gensec_gssapi_state->server_name);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
return nt_status;
|
|
}
|
|
|
|
maj_stat = gss_init_sec_context(&min_stat,
|
|
gensec_gssapi_state->client_cred->creds,
|
|
&gensec_gssapi_state->gssapi_context,
|
|
gensec_gssapi_state->server_name,
|
|
gensec_gssapi_state->gss_oid,
|
|
gensec_gssapi_state->gss_want_flags,
|
|
time_req,
|
|
gensec_gssapi_state->input_chan_bindings,
|
|
&input_token,
|
|
&gss_oid_p,
|
|
&output_token,
|
|
&gensec_gssapi_state->gss_got_flags, /* ret flags */
|
|
&time_rec);
|
|
if (maj_stat != GSS_S_FAILURE) {
|
|
goto init_sec_context_done;
|
|
}
|
|
if (min_stat != (OM_uint32)KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN) {
|
|
goto init_sec_context_done;
|
|
}
|
|
if (target_principal != NULL) {
|
|
goto init_sec_context_done;
|
|
}
|
|
|
|
fallback = true;
|
|
TALLOC_FREE(gensec_gssapi_state->target_principal);
|
|
gss_release_name(&min_stat2, &gensec_gssapi_state->server_name);
|
|
}
|
|
#endif /* !SAMBA4_USES_HEIMDAL */
|
|
if (gensec_gssapi_state->server_name == NULL) {
|
|
server_realm = smb_krb5_get_realm_from_hostname(gensec_gssapi_state,
|
|
hostname,
|
|
client_realm);
|
|
if (server_realm == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
#ifndef SAMBA4_USES_HEIMDAL
|
|
if (fallback &&
|
|
strequal(client_realm, server_realm)) {
|
|
goto init_sec_context_done;
|
|
}
|
|
#endif /* !SAMBA4_USES_HEIMDAL */
|
|
|
|
nt_status = gensec_gssapi_setup_server_principal(gensec_gssapi_state,
|
|
target_principal,
|
|
service,
|
|
hostname,
|
|
server_realm,
|
|
gensec_gssapi_state->gss_oid,
|
|
&gensec_gssapi_state->target_principal,
|
|
&gensec_gssapi_state->server_name);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
return nt_status;
|
|
}
|
|
}
|
|
|
|
maj_stat = gss_init_sec_context(&min_stat,
|
|
gensec_gssapi_state->client_cred->creds,
|
|
&gensec_gssapi_state->gssapi_context,
|
|
gensec_gssapi_state->server_name,
|
|
gensec_gssapi_state->gss_oid,
|
|
gensec_gssapi_state->gss_want_flags,
|
|
time_req,
|
|
gensec_gssapi_state->input_chan_bindings,
|
|
&input_token,
|
|
&gss_oid_p,
|
|
&output_token,
|
|
&gensec_gssapi_state->gss_got_flags, /* ret flags */
|
|
&time_rec);
|
|
goto init_sec_context_done;
|
|
/* JUMP! */
|
|
init_sec_context_done:
|
|
if (gss_oid_p) {
|
|
gensec_gssapi_state->gss_oid = gss_oid_p;
|
|
}
|
|
|
|
#ifdef SAMBA4_USES_HEIMDAL
|
|
send_to_kdc.func = smb_krb5_send_and_recv_func;
|
|
send_to_kdc.ptr = NULL;
|
|
|
|
ret = gsskrb5_set_send_to_kdc(&send_to_kdc);
|
|
if (ret) {
|
|
DEBUG(1,("gensec_gssapi_update: gsskrb5_set_send_to_kdc failed\n"));
|
|
return NT_STATUS_INTERNAL_ERROR;
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
case GENSEC_SERVER:
|
|
{
|
|
maj_stat = gss_accept_sec_context(&min_stat,
|
|
&gensec_gssapi_state->gssapi_context,
|
|
gensec_gssapi_state->server_cred->creds,
|
|
&input_token,
|
|
gensec_gssapi_state->input_chan_bindings,
|
|
&gensec_gssapi_state->client_name,
|
|
&gss_oid_p,
|
|
&output_token,
|
|
&gensec_gssapi_state->gss_got_flags,
|
|
&time_rec,
|
|
&gensec_gssapi_state->delegated_cred_handle);
|
|
if (gss_oid_p) {
|
|
gensec_gssapi_state->gss_oid = gss_oid_p;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
|
|
}
|
|
|
|
gensec_gssapi_state->gss_exchange_count++;
|
|
|
|
if (maj_stat == GSS_S_COMPLETE) {
|
|
*out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length);
|
|
gss_release_buffer(&min_stat2, &output_token);
|
|
|
|
if (gensec_gssapi_state->gss_got_flags & GSS_C_DELEG_FLAG &&
|
|
gensec_gssapi_state->delegated_cred_handle != GSS_C_NO_CREDENTIAL) {
|
|
DEBUG(5, ("gensec_gssapi: credentials were delegated\n"));
|
|
} else {
|
|
DEBUG(5, ("gensec_gssapi: NO credentials were delegated\n"));
|
|
}
|
|
|
|
tv = timeval_current_ofs(time_rec, 0);
|
|
gensec_gssapi_state->expire_time = timeval_to_nttime(&tv);
|
|
|
|
/* We may have been invoked as SASL, so there
|
|
* is more work to do */
|
|
if (gensec_gssapi_state->sasl) {
|
|
gensec_gssapi_state->sasl_state = STAGE_SASL_SSF_NEG;
|
|
return NT_STATUS_MORE_PROCESSING_REQUIRED;
|
|
} else {
|
|
gensec_gssapi_state->sasl_state = STAGE_DONE;
|
|
|
|
if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
|
|
DEBUG(5, ("GSSAPI Connection will be cryptographically sealed\n"));
|
|
} else if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
|
|
DEBUG(5, ("GSSAPI Connection will be cryptographically signed\n"));
|
|
} else {
|
|
DEBUG(5, ("GSSAPI Connection will have no cryptographic protection\n"));
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
} else if (maj_stat == GSS_S_CONTINUE_NEEDED) {
|
|
*out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length);
|
|
gss_release_buffer(&min_stat2, &output_token);
|
|
|
|
return NT_STATUS_MORE_PROCESSING_REQUIRED;
|
|
} else if (maj_stat == GSS_S_CONTEXT_EXPIRED) {
|
|
gss_cred_id_t creds = NULL;
|
|
gss_name_t name;
|
|
gss_buffer_desc buffer;
|
|
OM_uint32 lifetime = 0;
|
|
gss_cred_usage_t usage;
|
|
const char *role = NULL;
|
|
DEBUG(0, ("GSS %s Update(krb5)(%d) Update failed, credentials expired during GSSAPI handshake!\n",
|
|
role,
|
|
gensec_gssapi_state->gss_exchange_count));
|
|
|
|
|
|
switch (gensec_security->gensec_role) {
|
|
case GENSEC_CLIENT:
|
|
creds = gensec_gssapi_state->client_cred->creds;
|
|
role = "client";
|
|
break;
|
|
case GENSEC_SERVER:
|
|
creds = gensec_gssapi_state->server_cred->creds;
|
|
role = "server";
|
|
break;
|
|
}
|
|
|
|
maj_stat = gss_inquire_cred(&min_stat,
|
|
creds,
|
|
&name, &lifetime, &usage, NULL);
|
|
|
|
if (maj_stat == GSS_S_COMPLETE) {
|
|
const char *usage_string = NULL;
|
|
switch (usage) {
|
|
case GSS_C_BOTH:
|
|
usage_string = "GSS_C_BOTH";
|
|
break;
|
|
case GSS_C_ACCEPT:
|
|
usage_string = "GSS_C_ACCEPT";
|
|
break;
|
|
case GSS_C_INITIATE:
|
|
usage_string = "GSS_C_INITIATE";
|
|
break;
|
|
}
|
|
maj_stat = gss_display_name(&min_stat, name, &buffer, NULL);
|
|
if (maj_stat) {
|
|
buffer.value = NULL;
|
|
buffer.length = 0;
|
|
}
|
|
if (lifetime > 0) {
|
|
DEBUG(0, ("GSSAPI gss_inquire_cred indicates expiry of %*.*s in %u sec for %s\n",
|
|
(int)buffer.length, (int)buffer.length, (char *)buffer.value,
|
|
lifetime, usage_string));
|
|
} else {
|
|
DEBUG(0, ("GSSAPI gss_inquire_cred indicates %*.*s has already expired for %s\n",
|
|
(int)buffer.length, (int)buffer.length, (char *)buffer.value,
|
|
usage_string));
|
|
}
|
|
gss_release_buffer(&min_stat, &buffer);
|
|
gss_release_name(&min_stat, &name);
|
|
} else if (maj_stat != GSS_S_COMPLETE) {
|
|
DEBUG(0, ("inquiry of credential lifefime via GSSAPI gss_inquire_cred failed: %s\n",
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
}
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
} else if (smb_gss_oid_equal(gensec_gssapi_state->gss_oid,
|
|
gss_mech_krb5)) {
|
|
switch (min_stat) {
|
|
case KRB5KRB_AP_ERR_TKT_NYV:
|
|
DEBUG(1, ("Error with ticket to contact %s: possible clock skew between us and the KDC or target server: %s\n",
|
|
gensec_gssapi_state->target_principal,
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_TIME_DIFFERENCE_AT_DC; /* Make SPNEGO ignore us, we can't go any further here */
|
|
case KRB5KRB_AP_ERR_TKT_EXPIRED:
|
|
DEBUG(1, ("Error with ticket to contact %s: ticket is expired, possible clock skew between us and the KDC or target server: %s\n",
|
|
gensec_gssapi_state->target_principal,
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_INVALID_PARAMETER; /* Make SPNEGO ignore us, we can't go any further here */
|
|
case KRB5_KDC_UNREACH:
|
|
DEBUG(3, ("Cannot reach a KDC we require in order to obtain a ticket to %s: %s\n",
|
|
gensec_gssapi_state->target_principal,
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_NO_LOGON_SERVERS; /* Make SPNEGO ignore us, we can't go any further here */
|
|
case KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN:
|
|
DEBUG(3, ("Server %s is not registered with our KDC: %s\n",
|
|
gensec_gssapi_state->target_principal,
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_INVALID_PARAMETER; /* Make SPNEGO ignore us, we can't go any further here */
|
|
case KRB5KRB_AP_ERR_MSG_TYPE:
|
|
/* garbage input, possibly from the auto-mech detection */
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
default:
|
|
DEBUG(1, ("GSS %s Update(krb5)(%d) Update failed: %s\n",
|
|
gensec_security->gensec_role == GENSEC_CLIENT ? "client" : "server",
|
|
gensec_gssapi_state->gss_exchange_count,
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_LOGON_FAILURE;
|
|
}
|
|
} else {
|
|
DEBUG(1, ("GSS %s Update(%d) failed: %s\n",
|
|
gensec_security->gensec_role == GENSEC_CLIENT ? "client" : "server",
|
|
gensec_gssapi_state->gss_exchange_count,
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_LOGON_FAILURE;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* These last two stages are only done if we were invoked as SASL */
|
|
case STAGE_SASL_SSF_NEG:
|
|
{
|
|
switch (gensec_security->gensec_role) {
|
|
case GENSEC_CLIENT:
|
|
{
|
|
uint8_t maxlength_proposed[4];
|
|
uint8_t maxlength_accepted[4];
|
|
uint8_t security_supported;
|
|
int conf_state;
|
|
gss_qop_t qop_state;
|
|
input_token.length = in.length;
|
|
input_token.value = in.data;
|
|
|
|
/* As a client, we have just send a
|
|
* zero-length blob to the server (after the
|
|
* normal GSSAPI exchange), and it has replied
|
|
* with it's SASL negotiation */
|
|
|
|
maj_stat = gss_unwrap(&min_stat,
|
|
gensec_gssapi_state->gssapi_context,
|
|
&input_token,
|
|
&output_token,
|
|
&conf_state,
|
|
&qop_state);
|
|
if (GSS_ERROR(maj_stat)) {
|
|
DEBUG(1, ("gensec_gssapi_update: GSS UnWrap of SASL protection negotiation failed: %s\n",
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
if (output_token.length < 4) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
memcpy(maxlength_proposed, output_token.value, 4);
|
|
gss_release_buffer(&min_stat, &output_token);
|
|
|
|
/* first byte is the proposed security */
|
|
security_supported = maxlength_proposed[0];
|
|
maxlength_proposed[0] = '\0';
|
|
|
|
/* Rest is the proposed max wrap length */
|
|
gensec_gssapi_state->max_wrap_buf_size = MIN(RIVAL(maxlength_proposed, 0),
|
|
gensec_gssapi_state->max_wrap_buf_size);
|
|
gensec_gssapi_state->sasl_protection = 0;
|
|
if (security_supported & NEG_SEAL) {
|
|
if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
|
|
gensec_gssapi_state->sasl_protection |= NEG_SEAL;
|
|
}
|
|
}
|
|
if (security_supported & NEG_SIGN) {
|
|
if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
|
|
gensec_gssapi_state->sasl_protection |= NEG_SIGN;
|
|
}
|
|
}
|
|
if (security_supported & NEG_NONE) {
|
|
gensec_gssapi_state->sasl_protection |= NEG_NONE;
|
|
}
|
|
if (gensec_gssapi_state->sasl_protection == 0) {
|
|
DEBUG(1, ("Remote server does not support unprotected connections\n"));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* Send back the negotiated max length */
|
|
|
|
RSIVAL(maxlength_accepted, 0, gensec_gssapi_state->max_wrap_buf_size);
|
|
|
|
maxlength_accepted[0] = gensec_gssapi_state->sasl_protection;
|
|
|
|
input_token.value = maxlength_accepted;
|
|
input_token.length = sizeof(maxlength_accepted);
|
|
|
|
maj_stat = gss_wrap(&min_stat,
|
|
gensec_gssapi_state->gssapi_context,
|
|
false,
|
|
GSS_C_QOP_DEFAULT,
|
|
&input_token,
|
|
&conf_state,
|
|
&output_token);
|
|
if (GSS_ERROR(maj_stat)) {
|
|
DEBUG(1, ("GSS Update(SSF_NEG): GSS Wrap failed: %s\n",
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
*out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length);
|
|
gss_release_buffer(&min_stat, &output_token);
|
|
|
|
/* quirk: This changes the value that gensec_have_feature returns, to be that after SASL negotiation */
|
|
gensec_gssapi_state->sasl_state = STAGE_DONE;
|
|
|
|
if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
|
|
DEBUG(3, ("SASL/GSSAPI Connection to server will be cryptographically sealed\n"));
|
|
} else if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
|
|
DEBUG(3, ("SASL/GSSAPI Connection to server will be cryptographically signed\n"));
|
|
} else {
|
|
DEBUG(3, ("SASL/GSSAPI Connection to server will have no cryptographically protection\n"));
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
case GENSEC_SERVER:
|
|
{
|
|
uint8_t maxlength_proposed[4];
|
|
uint8_t security_supported = 0x0;
|
|
int conf_state;
|
|
|
|
/* As a server, we have just been sent a zero-length blob (note this, but it isn't fatal) */
|
|
if (in.length != 0) {
|
|
DEBUG(1, ("SASL/GSSAPI: client sent non-zero length starting SASL negotiation!\n"));
|
|
}
|
|
|
|
/* Give the client some idea what we will support */
|
|
|
|
RSIVAL(maxlength_proposed, 0, gensec_gssapi_state->max_wrap_buf_size);
|
|
/* first byte is the proposed security */
|
|
maxlength_proposed[0] = '\0';
|
|
|
|
gensec_gssapi_state->sasl_protection = 0;
|
|
if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
|
|
security_supported |= NEG_SEAL;
|
|
}
|
|
if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
|
|
security_supported |= NEG_SIGN;
|
|
}
|
|
if (security_supported == 0) {
|
|
/* If we don't support anything, this must be 0 */
|
|
RSIVAL(maxlength_proposed, 0, 0x0);
|
|
}
|
|
|
|
/* TODO: We may not wish to support this */
|
|
security_supported |= NEG_NONE;
|
|
maxlength_proposed[0] = security_supported;
|
|
|
|
input_token.value = maxlength_proposed;
|
|
input_token.length = sizeof(maxlength_proposed);
|
|
|
|
maj_stat = gss_wrap(&min_stat,
|
|
gensec_gssapi_state->gssapi_context,
|
|
false,
|
|
GSS_C_QOP_DEFAULT,
|
|
&input_token,
|
|
&conf_state,
|
|
&output_token);
|
|
if (GSS_ERROR(maj_stat)) {
|
|
DEBUG(1, ("GSS Update(SSF_NEG): GSS Wrap failed: %s\n",
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
*out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length);
|
|
gss_release_buffer(&min_stat, &output_token);
|
|
|
|
gensec_gssapi_state->sasl_state = STAGE_SASL_SSF_ACCEPT;
|
|
return NT_STATUS_MORE_PROCESSING_REQUIRED;
|
|
}
|
|
default:
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
|
|
}
|
|
}
|
|
/* This is s server-only stage */
|
|
case STAGE_SASL_SSF_ACCEPT:
|
|
{
|
|
uint8_t maxlength_accepted[4];
|
|
uint8_t security_accepted;
|
|
int conf_state;
|
|
gss_qop_t qop_state;
|
|
input_token.length = in.length;
|
|
input_token.value = in.data;
|
|
|
|
maj_stat = gss_unwrap(&min_stat,
|
|
gensec_gssapi_state->gssapi_context,
|
|
&input_token,
|
|
&output_token,
|
|
&conf_state,
|
|
&qop_state);
|
|
if (GSS_ERROR(maj_stat)) {
|
|
DEBUG(1, ("gensec_gssapi_update: GSS UnWrap of SASL protection negotiation failed: %s\n",
|
|
gssapi_error_string(out_mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
if (output_token.length < 4) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
memcpy(maxlength_accepted, output_token.value, 4);
|
|
gss_release_buffer(&min_stat, &output_token);
|
|
|
|
/* first byte is the proposed security */
|
|
security_accepted = maxlength_accepted[0];
|
|
maxlength_accepted[0] = '\0';
|
|
|
|
/* Rest is the proposed max wrap length */
|
|
gensec_gssapi_state->max_wrap_buf_size = MIN(RIVAL(maxlength_accepted, 0),
|
|
gensec_gssapi_state->max_wrap_buf_size);
|
|
|
|
gensec_gssapi_state->sasl_protection = 0;
|
|
if (security_accepted & NEG_SEAL) {
|
|
if (!gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
|
|
DEBUG(1, ("Remote client wanted seal, but gensec refused\n"));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
gensec_gssapi_state->sasl_protection |= NEG_SEAL;
|
|
}
|
|
if (security_accepted & NEG_SIGN) {
|
|
if (!gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
|
|
DEBUG(1, ("Remote client wanted sign, but gensec refused\n"));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
gensec_gssapi_state->sasl_protection |= NEG_SIGN;
|
|
}
|
|
if (security_accepted & NEG_NONE) {
|
|
gensec_gssapi_state->sasl_protection |= NEG_NONE;
|
|
}
|
|
|
|
/* quirk: This changes the value that gensec_have_feature returns, to be that after SASL negotiation */
|
|
gensec_gssapi_state->sasl_state = STAGE_DONE;
|
|
if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
|
|
DEBUG(5, ("SASL/GSSAPI Connection from client will be cryptographically sealed\n"));
|
|
} else if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
|
|
DEBUG(5, ("SASL/GSSAPI Connection from client will be cryptographically signed\n"));
|
|
} else {
|
|
DEBUG(5, ("SASL/GSSAPI Connection from client will have no cryptographic protection\n"));
|
|
}
|
|
|
|
*out = data_blob(NULL, 0);
|
|
return NT_STATUS_OK;
|
|
}
|
|
default:
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
|
|
struct gensec_gssapi_update_state {
|
|
NTSTATUS status;
|
|
DATA_BLOB out;
|
|
};
|
|
|
|
static struct tevent_req *gensec_gssapi_update_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct gensec_security *gensec_security,
|
|
const DATA_BLOB in)
|
|
{
|
|
struct tevent_req *req = NULL;
|
|
struct gensec_gssapi_update_state *state = NULL;
|
|
NTSTATUS status;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct gensec_gssapi_update_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
status = gensec_gssapi_update_internal(gensec_security,
|
|
state, ev, in,
|
|
&state->out);
|
|
state->status = status;
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
tevent_req_done(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
tevent_req_done(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
static NTSTATUS gensec_gssapi_update_recv(struct tevent_req *req,
|
|
TALLOC_CTX *out_mem_ctx,
|
|
DATA_BLOB *out)
|
|
{
|
|
struct gensec_gssapi_update_state *state =
|
|
tevent_req_data(req,
|
|
struct gensec_gssapi_update_state);
|
|
NTSTATUS status;
|
|
|
|
*out = data_blob_null;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
tevent_req_received(req);
|
|
return status;
|
|
}
|
|
|
|
*out = state->out;
|
|
talloc_steal(out_mem_ctx, state->out.data);
|
|
status = state->status;
|
|
tevent_req_received(req);
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS gensec_gssapi_wrap(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *mem_ctx,
|
|
const DATA_BLOB *in,
|
|
DATA_BLOB *out)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
OM_uint32 maj_stat, min_stat;
|
|
gss_buffer_desc input_token, output_token;
|
|
int conf_state;
|
|
input_token.length = in->length;
|
|
input_token.value = in->data;
|
|
|
|
maj_stat = gss_wrap(&min_stat,
|
|
gensec_gssapi_state->gssapi_context,
|
|
gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL),
|
|
GSS_C_QOP_DEFAULT,
|
|
&input_token,
|
|
&conf_state,
|
|
&output_token);
|
|
if (GSS_ERROR(maj_stat)) {
|
|
DEBUG(1, ("gensec_gssapi_wrap: GSS Wrap failed: %s\n",
|
|
gssapi_error_string(mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
*out = data_blob_talloc(mem_ctx, output_token.value, output_token.length);
|
|
gss_release_buffer(&min_stat, &output_token);
|
|
|
|
if (gensec_gssapi_state->sasl) {
|
|
size_t max_wrapped_size = gensec_gssapi_max_wrapped_size(gensec_security);
|
|
if (max_wrapped_size < out->length) {
|
|
DEBUG(1, ("gensec_gssapi_wrap: when wrapped, INPUT data (%u) is grew to be larger than SASL negotiated maximum output size (%u > %u)\n",
|
|
(unsigned)in->length,
|
|
(unsigned)out->length,
|
|
(unsigned int)max_wrapped_size));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
|
|
if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)
|
|
&& !conf_state) {
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS gensec_gssapi_unwrap(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *mem_ctx,
|
|
const DATA_BLOB *in,
|
|
DATA_BLOB *out)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
OM_uint32 maj_stat, min_stat;
|
|
gss_buffer_desc input_token, output_token;
|
|
int conf_state;
|
|
gss_qop_t qop_state;
|
|
input_token.length = in->length;
|
|
input_token.value = in->data;
|
|
|
|
if (gensec_gssapi_state->sasl) {
|
|
size_t max_wrapped_size = gensec_gssapi_max_wrapped_size(gensec_security);
|
|
if (max_wrapped_size < in->length) {
|
|
DEBUG(1, ("gensec_gssapi_unwrap: WRAPPED data is larger than SASL negotiated maximum size\n"));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
|
|
maj_stat = gss_unwrap(&min_stat,
|
|
gensec_gssapi_state->gssapi_context,
|
|
&input_token,
|
|
&output_token,
|
|
&conf_state,
|
|
&qop_state);
|
|
if (GSS_ERROR(maj_stat)) {
|
|
DEBUG(1, ("gensec_gssapi_unwrap: GSS UnWrap failed: %s\n",
|
|
gssapi_error_string(mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
*out = data_blob_talloc(mem_ctx, output_token.value, output_token.length);
|
|
gss_release_buffer(&min_stat, &output_token);
|
|
|
|
if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)
|
|
&& !conf_state) {
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/* Find out the maximum input size negotiated on this connection */
|
|
|
|
static size_t gensec_gssapi_max_input_size(struct gensec_security *gensec_security)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
OM_uint32 maj_stat, min_stat;
|
|
OM_uint32 max_input_size;
|
|
|
|
maj_stat = gss_wrap_size_limit(&min_stat,
|
|
gensec_gssapi_state->gssapi_context,
|
|
gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL),
|
|
GSS_C_QOP_DEFAULT,
|
|
gensec_gssapi_state->max_wrap_buf_size,
|
|
&max_input_size);
|
|
if (GSS_ERROR(maj_stat)) {
|
|
TALLOC_CTX *mem_ctx = talloc_new(NULL);
|
|
DEBUG(1, ("gensec_gssapi_max_input_size: determining signature size with gss_wrap_size_limit failed: %s\n",
|
|
gssapi_error_string(mem_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
talloc_free(mem_ctx);
|
|
return 0;
|
|
}
|
|
|
|
return max_input_size;
|
|
}
|
|
|
|
/* Find out the maximum output size negotiated on this connection */
|
|
static size_t gensec_gssapi_max_wrapped_size(struct gensec_security *gensec_security)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state = talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);;
|
|
return gensec_gssapi_state->max_wrap_buf_size;
|
|
}
|
|
|
|
static NTSTATUS gensec_gssapi_seal_packet(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *mem_ctx,
|
|
uint8_t *data, size_t length,
|
|
const uint8_t *whole_pdu, size_t pdu_length,
|
|
DATA_BLOB *sig)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
bool hdr_signing = false;
|
|
size_t sig_size = 0;
|
|
NTSTATUS status;
|
|
|
|
if (gensec_security->want_features & GENSEC_FEATURE_SIGN_PKT_HEADER) {
|
|
hdr_signing = true;
|
|
}
|
|
|
|
sig_size = gensec_gssapi_sig_size(gensec_security, length);
|
|
|
|
status = gssapi_seal_packet(gensec_gssapi_state->gssapi_context,
|
|
gensec_gssapi_state->gss_oid,
|
|
hdr_signing, sig_size,
|
|
data, length,
|
|
whole_pdu, pdu_length,
|
|
mem_ctx, sig);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("gssapi_seal_packet(hdr_signing=%u,sig_size=%zu,"
|
|
"data=%zu,pdu=%zu) failed: %s\n",
|
|
hdr_signing, sig_size, length, pdu_length,
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS gensec_gssapi_unseal_packet(struct gensec_security *gensec_security,
|
|
uint8_t *data, size_t length,
|
|
const uint8_t *whole_pdu, size_t pdu_length,
|
|
const DATA_BLOB *sig)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
bool hdr_signing = false;
|
|
NTSTATUS status;
|
|
|
|
if (gensec_security->want_features & GENSEC_FEATURE_SIGN_PKT_HEADER) {
|
|
hdr_signing = true;
|
|
}
|
|
|
|
status = gssapi_unseal_packet(gensec_gssapi_state->gssapi_context,
|
|
gensec_gssapi_state->gss_oid,
|
|
hdr_signing,
|
|
data, length,
|
|
whole_pdu, pdu_length,
|
|
sig);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("gssapi_unseal_packet(hdr_signing=%u,sig_size=%zu,"
|
|
"data=%zu,pdu=%zu) failed: %s\n",
|
|
hdr_signing, sig->length, length, pdu_length,
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS gensec_gssapi_sign_packet(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *mem_ctx,
|
|
const uint8_t *data, size_t length,
|
|
const uint8_t *whole_pdu, size_t pdu_length,
|
|
DATA_BLOB *sig)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
bool hdr_signing = false;
|
|
NTSTATUS status;
|
|
|
|
if (gensec_security->want_features & GENSEC_FEATURE_SIGN_PKT_HEADER) {
|
|
hdr_signing = true;
|
|
}
|
|
|
|
status = gssapi_sign_packet(gensec_gssapi_state->gssapi_context,
|
|
gensec_gssapi_state->gss_oid,
|
|
hdr_signing,
|
|
data, length,
|
|
whole_pdu, pdu_length,
|
|
mem_ctx, sig);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("gssapi_sign_packet(hdr_signing=%u,"
|
|
"data=%zu,pdu=%zu) failed: %s\n",
|
|
hdr_signing, length, pdu_length,
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS gensec_gssapi_check_packet(struct gensec_security *gensec_security,
|
|
const uint8_t *data, size_t length,
|
|
const uint8_t *whole_pdu, size_t pdu_length,
|
|
const DATA_BLOB *sig)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
bool hdr_signing = false;
|
|
NTSTATUS status;
|
|
|
|
if (gensec_security->want_features & GENSEC_FEATURE_SIGN_PKT_HEADER) {
|
|
hdr_signing = true;
|
|
}
|
|
|
|
status = gssapi_check_packet(gensec_gssapi_state->gssapi_context,
|
|
gensec_gssapi_state->gss_oid,
|
|
hdr_signing,
|
|
data, length,
|
|
whole_pdu, pdu_length,
|
|
sig);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("gssapi_check_packet(hdr_signing=%u,sig_size=%zu,"
|
|
"data=%zu,pdu=%zu) failed: %s\n",
|
|
hdr_signing, sig->length, length, pdu_length,
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/* Try to figure out what features we actually got on the connection */
|
|
static bool gensec_gssapi_have_feature(struct gensec_security *gensec_security,
|
|
uint32_t feature)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
if (feature & GENSEC_FEATURE_SIGN) {
|
|
/* If we are going GSSAPI SASL, then we honour the second negotiation */
|
|
if (gensec_gssapi_state->sasl
|
|
&& gensec_gssapi_state->sasl_state == STAGE_DONE) {
|
|
return ((gensec_gssapi_state->sasl_protection & NEG_SIGN)
|
|
&& (gensec_gssapi_state->gss_got_flags & GSS_C_INTEG_FLAG));
|
|
}
|
|
return gensec_gssapi_state->gss_got_flags & GSS_C_INTEG_FLAG;
|
|
}
|
|
if (feature & GENSEC_FEATURE_SEAL) {
|
|
/* If we are going GSSAPI SASL, then we honour the second negotiation */
|
|
if (gensec_gssapi_state->sasl
|
|
&& gensec_gssapi_state->sasl_state == STAGE_DONE) {
|
|
return ((gensec_gssapi_state->sasl_protection & NEG_SEAL)
|
|
&& (gensec_gssapi_state->gss_got_flags & GSS_C_CONF_FLAG));
|
|
}
|
|
return gensec_gssapi_state->gss_got_flags & GSS_C_CONF_FLAG;
|
|
}
|
|
if (feature & GENSEC_FEATURE_SESSION_KEY) {
|
|
/* Only for GSSAPI/Krb5 */
|
|
if (smb_gss_oid_equal(gensec_gssapi_state->gss_oid,
|
|
gss_mech_krb5)) {
|
|
return true;
|
|
}
|
|
}
|
|
if (feature & GENSEC_FEATURE_DCE_STYLE) {
|
|
return gensec_gssapi_state->gss_got_flags & GSS_C_DCE_STYLE;
|
|
}
|
|
if (feature & GENSEC_FEATURE_NEW_SPNEGO) {
|
|
NTSTATUS status;
|
|
uint32_t keytype;
|
|
|
|
if (!(gensec_gssapi_state->gss_got_flags & GSS_C_INTEG_FLAG)) {
|
|
return false;
|
|
}
|
|
|
|
if (gensec_setting_bool(gensec_security->settings, "gensec_gssapi", "force_new_spnego", false)) {
|
|
return true;
|
|
}
|
|
if (gensec_setting_bool(gensec_security->settings, "gensec_gssapi", "disable_new_spnego", false)) {
|
|
return false;
|
|
}
|
|
|
|
status = gssapi_get_session_key(gensec_gssapi_state,
|
|
gensec_gssapi_state->gssapi_context, NULL, &keytype);
|
|
/*
|
|
* We should do a proper sig on the mechListMic unless
|
|
* we know we have to be backwards compatible with
|
|
* earlier windows versions.
|
|
*
|
|
* Negotiating a non-krb5
|
|
* mech for example should be regarded as having
|
|
* NEW_SPNEGO
|
|
*/
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
switch (keytype) {
|
|
case ENCTYPE_DES_CBC_CRC:
|
|
case ENCTYPE_DES_CBC_MD5:
|
|
case ENCTYPE_ARCFOUR_HMAC:
|
|
case ENCTYPE_DES3_CBC_SHA1:
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
/* We can always do async (rather than strict request/reply) packets. */
|
|
if (feature & GENSEC_FEATURE_ASYNC_REPLIES) {
|
|
return true;
|
|
}
|
|
if (feature & GENSEC_FEATURE_SIGN_PKT_HEADER) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static NTTIME gensec_gssapi_expire_time(struct gensec_security *gensec_security)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state =
|
|
talloc_get_type_abort(gensec_security->private_data,
|
|
struct gensec_gssapi_state);
|
|
|
|
return gensec_gssapi_state->expire_time;
|
|
}
|
|
|
|
/*
|
|
* Extract the 'sesssion key' needed by SMB signing and ncacn_np
|
|
* (for encrypting some passwords).
|
|
*
|
|
* This breaks all the abstractions, but what do you expect...
|
|
*/
|
|
static NTSTATUS gensec_gssapi_session_key(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *mem_ctx,
|
|
DATA_BLOB *session_key)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
return gssapi_get_session_key(mem_ctx, gensec_gssapi_state->gssapi_context, session_key, NULL);
|
|
}
|
|
|
|
/* Get some basic (and authorization) information about the user on
|
|
* this session. This uses either the PAC (if present) or a local
|
|
* database lookup */
|
|
static NTSTATUS gensec_gssapi_session_info(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct auth_session_info **_session_info)
|
|
{
|
|
NTSTATUS nt_status;
|
|
TALLOC_CTX *tmp_ctx;
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
struct auth_session_info *session_info = NULL;
|
|
OM_uint32 maj_stat, min_stat;
|
|
DATA_BLOB pac_blob, *pac_blob_ptr = NULL;
|
|
|
|
gss_buffer_desc name_token;
|
|
char *principal_string;
|
|
|
|
tmp_ctx = talloc_named(mem_ctx, 0, "gensec_gssapi_session_info context");
|
|
NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
|
|
|
|
maj_stat = gss_display_name (&min_stat,
|
|
gensec_gssapi_state->client_name,
|
|
&name_token,
|
|
NULL);
|
|
if (GSS_ERROR(maj_stat)) {
|
|
DEBUG(1, ("GSS display_name failed: %s\n",
|
|
gssapi_error_string(tmp_ctx, maj_stat, min_stat, gensec_gssapi_state->gss_oid)));
|
|
talloc_free(tmp_ctx);
|
|
return NT_STATUS_FOOBAR;
|
|
}
|
|
|
|
principal_string = talloc_strndup(tmp_ctx,
|
|
(const char *)name_token.value,
|
|
name_token.length);
|
|
|
|
gss_release_buffer(&min_stat, &name_token);
|
|
|
|
if (!principal_string) {
|
|
talloc_free(tmp_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
nt_status = gssapi_obtain_pac_blob(tmp_ctx, gensec_gssapi_state->gssapi_context,
|
|
gensec_gssapi_state->client_name,
|
|
&pac_blob);
|
|
|
|
/* IF we have the PAC - otherwise we need to get this
|
|
* data from elsewere - local ldb, or (TODO) lookup of some
|
|
* kind...
|
|
*/
|
|
if (NT_STATUS_IS_OK(nt_status)) {
|
|
pac_blob_ptr = &pac_blob;
|
|
}
|
|
nt_status = gensec_generate_session_info_pac(tmp_ctx,
|
|
gensec_security,
|
|
gensec_gssapi_state->smb_krb5_context,
|
|
pac_blob_ptr, principal_string,
|
|
gensec_get_remote_address(gensec_security),
|
|
&session_info);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
talloc_free(tmp_ctx);
|
|
return nt_status;
|
|
}
|
|
|
|
nt_status = gensec_gssapi_session_key(gensec_security, session_info, &session_info->session_key);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
talloc_free(tmp_ctx);
|
|
return nt_status;
|
|
}
|
|
|
|
if (gensec_gssapi_state->gss_got_flags & GSS_C_DELEG_FLAG &&
|
|
gensec_gssapi_state->delegated_cred_handle != GSS_C_NO_CREDENTIAL) {
|
|
krb5_error_code ret;
|
|
const char *error_string;
|
|
|
|
DEBUG(10, ("gensec_gssapi: delegated credentials supplied by client\n"));
|
|
|
|
/*
|
|
* Create anonymous credentials for now.
|
|
*
|
|
* We will update them with the provided client gss creds.
|
|
*/
|
|
session_info->credentials = cli_credentials_init_anon(session_info);
|
|
if (session_info->credentials == NULL) {
|
|
talloc_free(tmp_ctx);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
ret = cli_credentials_set_client_gss_creds(session_info->credentials,
|
|
gensec_security->settings->lp_ctx,
|
|
gensec_gssapi_state->delegated_cred_handle,
|
|
CRED_SPECIFIED, &error_string);
|
|
if (ret) {
|
|
talloc_free(tmp_ctx);
|
|
DEBUG(2,("Failed to get gss creds: %s\n", error_string));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
/* This credential handle isn't useful for password authentication, so ensure nobody tries to do that */
|
|
cli_credentials_set_kerberos_state(session_info->credentials, CRED_MUST_USE_KERBEROS);
|
|
|
|
/* It has been taken from this place... */
|
|
gensec_gssapi_state->delegated_cred_handle = GSS_C_NO_CREDENTIAL;
|
|
} else {
|
|
DEBUG(10, ("gensec_gssapi: NO delegated credentials supplied by client\n"));
|
|
}
|
|
|
|
*_session_info = talloc_steal(mem_ctx, session_info);
|
|
talloc_free(tmp_ctx);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static size_t gensec_gssapi_sig_size(struct gensec_security *gensec_security, size_t data_size)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
size_t sig_size;
|
|
|
|
if (gensec_gssapi_state->sig_size > 0) {
|
|
return gensec_gssapi_state->sig_size;
|
|
}
|
|
|
|
sig_size = gssapi_get_sig_size(gensec_gssapi_state->gssapi_context,
|
|
gensec_gssapi_state->gss_oid,
|
|
gensec_gssapi_state->gss_got_flags,
|
|
data_size);
|
|
|
|
gensec_gssapi_state->sig_size = sig_size;
|
|
return gensec_gssapi_state->sig_size;
|
|
}
|
|
|
|
static const char *gensec_gssapi_final_auth_type(struct gensec_security *gensec_security)
|
|
{
|
|
struct gensec_gssapi_state *gensec_gssapi_state
|
|
= talloc_get_type(gensec_security->private_data, struct gensec_gssapi_state);
|
|
/* Only return the string for GSSAPI/Krb5 */
|
|
if (smb_gss_oid_equal(gensec_gssapi_state->gss_oid,
|
|
gss_mech_krb5)) {
|
|
return GENSEC_FINAL_AUTH_TYPE_KRB5;
|
|
} else {
|
|
return "gensec_gssapi: UNKNOWN MECH";
|
|
}
|
|
}
|
|
|
|
static const char *gensec_gssapi_krb5_oids[] = {
|
|
GENSEC_OID_KERBEROS5_OLD,
|
|
GENSEC_OID_KERBEROS5,
|
|
NULL
|
|
};
|
|
|
|
static const char *gensec_gssapi_spnego_oids[] = {
|
|
GENSEC_OID_SPNEGO,
|
|
NULL
|
|
};
|
|
|
|
/* As a server, this could in theory accept any GSSAPI mech */
|
|
static const struct gensec_security_ops gensec_gssapi_spnego_security_ops = {
|
|
.name = "gssapi_spnego",
|
|
.sasl_name = "GSS-SPNEGO",
|
|
.auth_type = DCERPC_AUTH_TYPE_SPNEGO,
|
|
.oid = gensec_gssapi_spnego_oids,
|
|
.client_start = gensec_gssapi_client_start,
|
|
.server_start = gensec_gssapi_server_start,
|
|
.magic = gensec_magic_check_krb5_oid,
|
|
.update_send = gensec_gssapi_update_send,
|
|
.update_recv = gensec_gssapi_update_recv,
|
|
.session_key = gensec_gssapi_session_key,
|
|
.session_info = gensec_gssapi_session_info,
|
|
.sign_packet = gensec_gssapi_sign_packet,
|
|
.check_packet = gensec_gssapi_check_packet,
|
|
.seal_packet = gensec_gssapi_seal_packet,
|
|
.unseal_packet = gensec_gssapi_unseal_packet,
|
|
.max_input_size = gensec_gssapi_max_input_size,
|
|
.max_wrapped_size = gensec_gssapi_max_wrapped_size,
|
|
.wrap = gensec_gssapi_wrap,
|
|
.unwrap = gensec_gssapi_unwrap,
|
|
.have_feature = gensec_gssapi_have_feature,
|
|
.expire_time = gensec_gssapi_expire_time,
|
|
.final_auth_type = gensec_gssapi_final_auth_type,
|
|
.enabled = false,
|
|
.kerberos = true,
|
|
.priority = GENSEC_GSSAPI
|
|
};
|
|
|
|
/* As a server, this could in theory accept any GSSAPI mech */
|
|
static const struct gensec_security_ops gensec_gssapi_krb5_security_ops = {
|
|
.name = "gssapi_krb5",
|
|
.auth_type = DCERPC_AUTH_TYPE_KRB5,
|
|
.oid = gensec_gssapi_krb5_oids,
|
|
.client_start = gensec_gssapi_client_start,
|
|
.server_start = gensec_gssapi_server_start,
|
|
.magic = gensec_magic_check_krb5_oid,
|
|
.update_send = gensec_gssapi_update_send,
|
|
.update_recv = gensec_gssapi_update_recv,
|
|
.session_key = gensec_gssapi_session_key,
|
|
.session_info = gensec_gssapi_session_info,
|
|
.sig_size = gensec_gssapi_sig_size,
|
|
.sign_packet = gensec_gssapi_sign_packet,
|
|
.check_packet = gensec_gssapi_check_packet,
|
|
.seal_packet = gensec_gssapi_seal_packet,
|
|
.unseal_packet = gensec_gssapi_unseal_packet,
|
|
.max_input_size = gensec_gssapi_max_input_size,
|
|
.max_wrapped_size = gensec_gssapi_max_wrapped_size,
|
|
.wrap = gensec_gssapi_wrap,
|
|
.unwrap = gensec_gssapi_unwrap,
|
|
.have_feature = gensec_gssapi_have_feature,
|
|
.expire_time = gensec_gssapi_expire_time,
|
|
.final_auth_type = gensec_gssapi_final_auth_type,
|
|
.enabled = true,
|
|
.kerberos = true,
|
|
.priority = GENSEC_GSSAPI
|
|
};
|
|
|
|
/* As a server, this could in theory accept any GSSAPI mech */
|
|
static const struct gensec_security_ops gensec_gssapi_sasl_krb5_security_ops = {
|
|
.name = "gssapi_krb5_sasl",
|
|
.sasl_name = "GSSAPI",
|
|
.client_start = gensec_gssapi_sasl_client_start,
|
|
.server_start = gensec_gssapi_sasl_server_start,
|
|
.update_send = gensec_gssapi_update_send,
|
|
.update_recv = gensec_gssapi_update_recv,
|
|
.session_key = gensec_gssapi_session_key,
|
|
.session_info = gensec_gssapi_session_info,
|
|
.max_input_size = gensec_gssapi_max_input_size,
|
|
.max_wrapped_size = gensec_gssapi_max_wrapped_size,
|
|
.wrap = gensec_gssapi_wrap,
|
|
.unwrap = gensec_gssapi_unwrap,
|
|
.have_feature = gensec_gssapi_have_feature,
|
|
.expire_time = gensec_gssapi_expire_time,
|
|
.final_auth_type = gensec_gssapi_final_auth_type,
|
|
.enabled = true,
|
|
.kerberos = true,
|
|
.priority = GENSEC_GSSAPI
|
|
};
|
|
|
|
_PUBLIC_ NTSTATUS gensec_gssapi_init(TALLOC_CTX *ctx)
|
|
{
|
|
NTSTATUS ret;
|
|
|
|
ret = gensec_register(ctx, &gensec_gssapi_spnego_security_ops);
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(0,("Failed to register '%s' gensec backend!\n",
|
|
gensec_gssapi_spnego_security_ops.name));
|
|
return ret;
|
|
}
|
|
|
|
ret = gensec_register(ctx, &gensec_gssapi_krb5_security_ops);
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(0,("Failed to register '%s' gensec backend!\n",
|
|
gensec_gssapi_krb5_security_ops.name));
|
|
return ret;
|
|
}
|
|
|
|
ret = gensec_register(ctx, &gensec_gssapi_sasl_krb5_security_ops);
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(0,("Failed to register '%s' gensec backend!\n",
|
|
gensec_gssapi_sasl_krb5_security_ops.name));
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|