external.c   [plain text]

/*
 * Copyright (c) 2006 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "ntlm.h"

gss_OID_desc GSSAPI_LIB_VARIABLE __gss_ntlm_get_session_key_x_oid_desc =
    {6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x14")};

gss_OID_desc GSSAPI_LIB_VARIABLE __gss_c_nt_ntlm_oid_desc =
    {6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x15")};

gss_OID_desc GSSAPI_LIB_VARIABLE __gss_c_ntlm_v1 =
    {6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x19")};

gss_OID_desc GSSAPI_LIB_VARIABLE __gss_c_ntlm_v2 =
    {6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x1a")};
    
gss_OID_desc GSSAPI_LIB_VARIABLE __gss_c_ntlm_session_key =
    {6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x1b")};

gss_OID_desc GSSAPI_LIB_VARIABLE __gss_c_ntlm_force_v1 =
    {6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x1c")};

gss_OID_desc GSSAPI_LIB_VARIABLE __gss_c_ntlm_support_channelbindings =
    {6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x1d")};

gss_OID_desc GSSAPI_LIB_VARIABLE __gss_c_ntlm_support_lm2 =
    {6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x1f")};

#ifdef ENABLE_NTLM

static int
get_signing_supported(gss_OID mech, gss_mo_desc *mo, gss_buffer_t value)
{
    OM_uint32 major, minor;
    ntlm_ctx ctx;
    int def = 0;

    major = _gss_ntlm_allocate_ctx(&minor, NULL, &ctx);
    if (major == GSS_S_COMPLETE) {
	gss_ctx_id_t gctx = (gss_ctx_id_t)ctx;
	
	if ((ctx->probe_flags & NSI_NO_SIGNING) == 0)
	    def = 1;

	_gss_ntlm_delete_sec_context(&minor, &gctx, NULL);
    }
    if (!def)
	return _gss_mo_get_option_0(mech, mo, value);

    return _gss_mo_get_option_1(mech, mo, value);
}



static gss_mo_desc _gssntlm_mech_options[] = {
    { GSS_C_NTLM_V1, "NTLMv1", NULL, _gss_mo_get_option_1 },
    { GSS_C_NTLM_FORCE_V1, "Force NTLMv1", NULL, _gss_mo_get_option_0 },
    { GSS_C_NTLM_V2, "NTLMv2", NULL, _gss_mo_get_option_1 },
    { GSS_C_NTLM_SESSION_KEY, "NTLM session key", NULL, get_signing_supported },
    { GSS_C_NTLM_SUPPORT_CHANNELBINDINGS, "NTLM support channel bindings", NULL, _gss_mo_get_option_1 },
    { GSS_C_NTLM_SUPPORT_LM2, "NTLM support LM2", NULL, _gss_mo_get_option_1 },
};

static gssapi_mech_interface_desc ntlm_mech = {
    GMI_VERSION,
    "ntlm",
    {10, rk_UNCONST("\x2b\x06\x01\x04\x01\x82\x37\x02\x02\x0a") },
    0,
    _gss_ntlm_acquire_cred,
    _gss_ntlm_release_cred,
    _gss_ntlm_init_sec_context,
    _gss_ntlm_accept_sec_context,
    _gss_ntlm_process_context_token,
    _gss_ntlm_delete_sec_context,
    _gss_ntlm_context_time,
    _gss_ntlm_get_mic,
    _gss_ntlm_verify_mic,
    _gss_ntlm_wrap,
    _gss_ntlm_unwrap,
    _gss_ntlm_display_status,
    NULL,
    _gss_ntlm_compare_name,
    _gss_ntlm_display_name,
    _gss_ntlm_import_name,
    _gss_ntlm_export_name,
    _gss_ntlm_release_name,
    _gss_ntlm_inquire_cred,
    _gss_ntlm_inquire_context,
    _gss_ntlm_wrap_size_limit,
    _gss_ntlm_add_cred,
    _gss_ntlm_inquire_cred_by_mech,
    _gss_ntlm_export_sec_context,
    _gss_ntlm_import_sec_context,
    _gss_ntlm_inquire_names_for_mech,
    _gss_ntlm_inquire_mechs_for_name,
    _gss_ntlm_canonicalize_name,
    _gss_ntlm_duplicate_name,
    _gss_ntlm_inquire_sec_context_by_oid,
    NULL,
    NULL,
    NULL,
    NULL,
    _gss_ntlm_wrap_iov,
    _gss_ntlm_unwrap_iov,
    _gss_ntlm_wrap_iov_length,
    NULL,
    NULL,
    NULL,
    _gss_ntlm_acquire_cred_ex,
    _gss_ntlm_iter_creds_f,
    _gss_ntlm_destroy_cred,
    _gss_ntlm_cred_hold,
    _gss_ntlm_cred_unhold,
    _gss_ntlm_cred_label_get,
    _gss_ntlm_cred_label_set,
    _gssntlm_mech_options,
    sizeof(_gssntlm_mech_options) / sizeof(_gssntlm_mech_options[0])
};

#endif

gssapi_mech_interface
__gss_ntlm_initialize(void)
{
#ifdef ENABLE_NTLM
	return &ntlm_mech;
#else
	return NULL;
#endif
}

gss_OID_desc GSSAPI_LIB_VARIABLE __gss_ntlm_mechanism_oid_desc =
{10, rk_UNCONST("\x2b\x06\x01\x04\x01\x82\x37\x02\x02\x0a") };

/*
 * 1.2.752.43.13.3.128
 *
 * ::= GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X.128
 * so that this OID can be used also with the Kerberos mech.
 */
gss_OID_desc GSSAPI_LIB_VARIABLE __gss_c_inq_win2k_pac_x_oid_desc =
    {8, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x03\x81\x00")};

/* 1.2.752.43.13.24 GSS_C_NTLM_GUEST */

gss_OID_desc GSSAPI_LIB_VARIABLE __gss_c_ntlm_guest_oid_desc =
    {6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x18")};

/*
 * compat
 */

#undef GSS_NTLM_GET_SESSION_KEY_X
GSSAPI_LIB_VARIABLE gss_OID GSS_NTLM_GET_SESSION_KEY_X =
    &__gss_ntlm_get_session_key_x_oid_desc;

#undef GSS_NTLM_MECHANISM
GSSAPI_LIB_VARIABLE gss_OID GSS_NTLM_MECHANISM =
    &__gss_ntlm_mechanism_oid_desc;

#undef GSS_C_NT_NTLM
GSSAPI_LIB_VARIABLE gss_OID GSS_C_NT_NTLM =
    &__gss_c_nt_ntlm_oid_desc;

#undef GSS_C_NTLM_GUEST
GSSAPI_LIB_VARIABLE gss_OID GSS_C_NTLM_GUEST =
    &__gss_c_ntlm_guest_oid_desc;