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heimdal/lib/gssapi/krb5/external.c
Love Hornquist Astrand fa502c6648 Add support for gss_{import,export}_cred() as requested by metze 
Works for krb5 and SPNEGO mechanisms. Kerberos credentials are passed as
credential cache names, or if there are memory based credentials, inband in the protocol. This means that the credentials buffers must be keep secret.

As documented by IBM (they have the wrong prototype though)
and GGF (GSS-API Extensions) back in 2001
2009-07-29 13:36:02 +02:00

484 lines
16 KiB
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/*
* Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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 "gsskrb5_locl.h"
#include <gssapi_mech.h>
/*
* The implementation must reserve static storage for a
* gss_OID_desc object containing the value
* {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
* "\x01\x02\x01\x01"},
* corresponding to an object-identifier value of
* {iso(1) member-body(2) United States(840) mit(113554)
* infosys(1) gssapi(2) generic(1) user_name(1)}. The constant
* GSS_C_NT_USER_NAME should be initialized to point
* to that gss_OID_desc.
*/
static gss_OID_desc gss_c_nt_user_name_oid_desc =
{10, rk_UNCONST("\x2a\x86\x48\x86\xf7\x12" "\x01\x02\x01\x01")};
gss_OID GSSAPI_LIB_VARIABLE GSS_C_NT_USER_NAME =
&gss_c_nt_user_name_oid_desc;
/*
* The implementation must reserve static storage for a
* gss_OID_desc object containing the value
* {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
* "\x01\x02\x01\x02"},
* corresponding to an object-identifier value of
* {iso(1) member-body(2) United States(840) mit(113554)
* infosys(1) gssapi(2) generic(1) machine_uid_name(2)}.
* The constant GSS_C_NT_MACHINE_UID_NAME should be
* initialized to point to that gss_OID_desc.
*/
static gss_OID_desc gss_c_nt_machine_uid_name_oid_desc =
{10, rk_UNCONST("\x2a\x86\x48\x86\xf7\x12" "\x01\x02\x01\x02")};
gss_OID GSSAPI_LIB_VARIABLE GSS_C_NT_MACHINE_UID_NAME =
&gss_c_nt_machine_uid_name_oid_desc;
/*
* The implementation must reserve static storage for a
* gss_OID_desc object containing the value
* {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
* "\x01\x02\x01\x03"},
* corresponding to an object-identifier value of
* {iso(1) member-body(2) United States(840) mit(113554)
* infosys(1) gssapi(2) generic(1) string_uid_name(3)}.
* The constant GSS_C_NT_STRING_UID_NAME should be
* initialized to point to that gss_OID_desc.
*/
static gss_OID_desc gss_c_nt_string_uid_name_oid_desc =
{10, rk_UNCONST("\x2a\x86\x48\x86\xf7\x12" "\x01\x02\x01\x03")};
gss_OID GSSAPI_LIB_VARIABLE GSS_C_NT_STRING_UID_NAME =
&gss_c_nt_string_uid_name_oid_desc;
/*
* The implementation must reserve static storage for a
* gss_OID_desc object containing the value
* {6, (void *)"\x2b\x06\x01\x05\x06\x02"},
* corresponding to an object-identifier value of
* {iso(1) org(3) dod(6) internet(1) security(5)
* nametypes(6) gss-host-based-services(2)). The constant
* GSS_C_NT_HOSTBASED_SERVICE_X should be initialized to point
* to that gss_OID_desc. This is a deprecated OID value, and
* implementations wishing to support hostbased-service names
* should instead use the GSS_C_NT_HOSTBASED_SERVICE OID,
* defined below, to identify such names;
* GSS_C_NT_HOSTBASED_SERVICE_X should be accepted a synonym
* for GSS_C_NT_HOSTBASED_SERVICE when presented as an input
* parameter, but should not be emitted by GSS-API
* implementations
*/
static gss_OID_desc gss_c_nt_hostbased_service_x_oid_desc =
{6, rk_UNCONST("\x2b\x06\x01\x05\x06\x02")};
gss_OID GSSAPI_LIB_VARIABLE GSS_C_NT_HOSTBASED_SERVICE_X =
&gss_c_nt_hostbased_service_x_oid_desc;
/*
* The implementation must reserve static storage for a
* gss_OID_desc object containing the value
* {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
* "\x01\x02\x01\x04"}, corresponding to an
* object-identifier value of {iso(1) member-body(2)
* Unites States(840) mit(113554) infosys(1) gssapi(2)
* generic(1) service_name(4)}. The constant
* GSS_C_NT_HOSTBASED_SERVICE should be initialized
* to point to that gss_OID_desc.
*/
static gss_OID_desc gss_c_nt_hostbased_service_oid_desc =
{10, rk_UNCONST("\x2a\x86\x48\x86\xf7\x12" "\x01\x02\x01\x04")};
gss_OID GSSAPI_LIB_VARIABLE GSS_C_NT_HOSTBASED_SERVICE =
&gss_c_nt_hostbased_service_oid_desc;
/*
* The implementation must reserve static storage for a
* gss_OID_desc object containing the value
* {6, (void *)"\x2b\x06\01\x05\x06\x03"},
* corresponding to an object identifier value of
* {1(iso), 3(org), 6(dod), 1(internet), 5(security),
* 6(nametypes), 3(gss-anonymous-name)}. The constant
* and GSS_C_NT_ANONYMOUS should be initialized to point
* to that gss_OID_desc.
*/
static gss_OID_desc gss_c_nt_anonymous_oid_desc =
{6, rk_UNCONST("\x2b\x06\01\x05\x06\x03")};
gss_OID GSSAPI_LIB_VARIABLE GSS_C_NT_ANONYMOUS =
&gss_c_nt_anonymous_oid_desc;
/*
* The implementation must reserve static storage for a
* gss_OID_desc object containing the value
* {6, (void *)"\x2b\x06\x01\x05\x06\x04"},
* corresponding to an object-identifier value of
* {1(iso), 3(org), 6(dod), 1(internet), 5(security),
* 6(nametypes), 4(gss-api-exported-name)}. The constant
* GSS_C_NT_EXPORT_NAME should be initialized to point
* to that gss_OID_desc.
*/
static gss_OID_desc gss_c_nt_export_name_oid_desc =
{6, rk_UNCONST("\x2b\x06\x01\x05\x06\x04") };
gss_OID GSSAPI_LIB_VARIABLE GSS_C_NT_EXPORT_NAME =
&gss_c_nt_export_name_oid_desc;
/*
* This name form shall be represented by the Object Identifier {iso(1)
* member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
* krb5(2) krb5_name(1)}. The recommended symbolic name for this type
* is "GSS_KRB5_NT_PRINCIPAL_NAME".
*/
static gss_OID_desc gss_krb5_nt_principal_name_oid_desc =
{10, rk_UNCONST("\x2a\x86\x48\x86\xf7\x12\x01\x02\x02\x01") };
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_NT_PRINCIPAL_NAME =
&gss_krb5_nt_principal_name_oid_desc;
/*
* This name form shall be represented by the Object Identifier {iso(1)
* member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
* generic(1) user_name(1)}. The recommended symbolic name for this
* type is "GSS_KRB5_NT_USER_NAME".
*/
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_NT_USER_NAME =
&gss_c_nt_user_name_oid_desc;
/*
* This name form shall be represented by the Object Identifier {iso(1)
* member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
* generic(1) machine_uid_name(2)}. The recommended symbolic name for
* this type is "GSS_KRB5_NT_MACHINE_UID_NAME".
*/
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_NT_MACHINE_UID_NAME =
&gss_c_nt_machine_uid_name_oid_desc;
/*
* This name form shall be represented by the Object Identifier {iso(1)
* member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
* generic(1) string_uid_name(3)}. The recommended symbolic name for
* this type is "GSS_KRB5_NT_STRING_UID_NAME".
*/
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_NT_STRING_UID_NAME =
&gss_c_nt_string_uid_name_oid_desc;
/*
* To support ongoing experimentation, testing, and evolution of the
* specification, the Kerberos V5 GSS-API mechanism as defined in this
* and any successor memos will be identified with the following Object
* Identifier, as defined in RFC-1510, until the specification is
* advanced to the level of Proposed Standard RFC:
*
* {iso(1), org(3), dod(5), internet(1), security(5), kerberosv5(2)}
*
* Upon advancement to the level of Proposed Standard RFC, the Kerberos
* V5 GSS-API mechanism will be identified by an Object Identifier
* having the value:
*
* {iso(1) member-body(2) United States(840) mit(113554) infosys(1)
* gssapi(2) krb5(2)}
*/
#if 0 /* This is the old OID */
static gss_OID_desc gss_krb5_mechanism_oid_desc =
{5, rk_UNCONST("\x2b\x05\x01\x05\x02")};
#endif
static gss_OID_desc gss_krb5_mechanism_oid_desc =
{9, rk_UNCONST("\x2a\x86\x48\x86\xf7\x12\x01\x02\x02") };
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_MECHANISM =
&gss_krb5_mechanism_oid_desc;
/*
* draft-ietf-cat-iakerb-09, IAKERB:
* The mechanism ID for IAKERB proxy GSS-API Kerberos, in accordance
* with the mechanism proposed by SPNEGO [7] for negotiating protocol
* variations, is: {iso(1) org(3) dod(6) internet(1) security(5)
* mechanisms(5) iakerb(10) iakerbProxyProtocol(1)}. The proposed
* mechanism ID for IAKERB minimum messages GSS-API Kerberos, in
* accordance with the mechanism proposed by SPNEGO for negotiating
* protocol variations, is: {iso(1) org(3) dod(6) internet(1)
* security(5) mechanisms(5) iakerb(10)
* iakerbMinimumMessagesProtocol(2)}.
*/
static gss_OID_desc gss_iakerb_proxy_mechanism_oid_desc =
{7, rk_UNCONST("\x2b\x06\x01\x05\x05\x0a\x01")};
gss_OID GSSAPI_LIB_VARIABLE GSS_IAKERB_PROXY_MECHANISM =
&gss_iakerb_proxy_mechanism_oid_desc;
static gss_OID_desc gss_iakerb_min_msg_mechanism_oid_desc =
{7, rk_UNCONST("\x2b\x06\x01\x05\x05\x0a\x02") };
gss_OID GSSAPI_LIB_VARIABLE GSS_IAKERB_MIN_MSG_MECHANISM =
&gss_iakerb_min_msg_mechanism_oid_desc;
/*
*
*/
static gss_OID_desc gss_c_peer_has_updated_spnego_oid_desc =
{9, (void *)"\x2b\x06\x01\x04\x01\xa9\x4a\x13\x05"};
gss_OID GSSAPI_LIB_VARIABLE GSS_C_PEER_HAS_UPDATED_SPNEGO =
&gss_c_peer_has_updated_spnego_oid_desc;
/*
* 1.2.752.43.13 Heimdal GSS-API Extentions
*/
/* 1.2.752.43.13.1 */
static gss_OID_desc gss_krb5_copy_ccache_x_oid_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x01")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_COPY_CCACHE_X =
&gss_krb5_copy_ccache_x_oid_desc;
/* 1.2.752.43.13.2 */
static gss_OID_desc gss_krb5_get_tkt_flags_x_oid_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x02")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_GET_TKT_FLAGS_X =
&gss_krb5_get_tkt_flags_x_oid_desc;
/* 1.2.752.43.13.3 */
static gss_OID_desc gss_krb5_extract_authz_data_from_sec_context_x_oid_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x03")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT_X =
&gss_krb5_extract_authz_data_from_sec_context_x_oid_desc;
/* 1.2.752.43.13.4 */
static gss_OID_desc gss_krb5_compat_des3_mic_x_oid_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x04")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_COMPAT_DES3_MIC_X =
&gss_krb5_compat_des3_mic_x_oid_desc;
/* 1.2.752.43.13.5 */
static gss_OID_desc gss_krb5_register_acceptor_identity_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x05")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_REGISTER_ACCEPTOR_IDENTITY_X =
&gss_krb5_register_acceptor_identity_x_desc;
/* 1.2.752.43.13.6 */
static gss_OID_desc gss_krb5_export_lucid_context_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x06")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_EXPORT_LUCID_CONTEXT_X =
&gss_krb5_export_lucid_context_x_desc;
/* 1.2.752.43.13.6.1 */
static gss_OID_desc gss_krb5_export_lucid_context_v1_x_desc =
{7, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x06\x01")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_EXPORT_LUCID_CONTEXT_V1_X =
&gss_krb5_export_lucid_context_v1_x_desc;
/* 1.2.752.43.13.7 */
static gss_OID_desc gss_krb5_set_dns_canonicalize_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x07")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_SET_DNS_CANONICALIZE_X =
&gss_krb5_set_dns_canonicalize_x_desc;
/* 1.2.752.43.13.8 */
static gss_OID_desc gss_krb5_get_subkey_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x08")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_GET_SUBKEY_X =
&gss_krb5_get_subkey_x_desc;
/* 1.2.752.43.13.9 */
static gss_OID_desc gss_krb5_get_initiator_subkey_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x09")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_GET_INITIATOR_SUBKEY_X =
&gss_krb5_get_initiator_subkey_x_desc;
/* 1.2.752.43.13.10 */
static gss_OID_desc gss_krb5_get_acceptor_subkey_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x0a")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_GET_ACCEPTOR_SUBKEY_X =
&gss_krb5_get_acceptor_subkey_x_desc;
/* 1.2.752.43.13.11 */
static gss_OID_desc gss_krb5_send_to_kdc_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x0b")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_SEND_TO_KDC_X =
&gss_krb5_send_to_kdc_x_desc;
/* 1.2.752.43.13.12 */
static gss_OID_desc gss_krb5_get_authtime_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x0c")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_GET_AUTHTIME_X =
&gss_krb5_get_authtime_x_desc;
/* 1.2.752.43.13.13 */
static gss_OID_desc gss_krb5_get_service_keyblock_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x0d")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_GET_SERVICE_KEYBLOCK_X =
&gss_krb5_get_service_keyblock_x_desc;
/* 1.2.752.43.13.14 */
static gss_OID_desc gss_krb5_set_allowable_enctypes_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x0e")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_SET_ALLOWABLE_ENCTYPES_X =
&gss_krb5_set_allowable_enctypes_x_desc;
/* 1.2.752.43.13.15 */
static gss_OID_desc gss_krb5_set_default_realm_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x0f")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_SET_DEFAULT_REALM_X =
&gss_krb5_set_default_realm_x_desc;
/* 1.2.752.43.13.16 */
static gss_OID_desc gss_krb5_ccache_name_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x10")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_CCACHE_NAME_X =
&gss_krb5_ccache_name_x_desc;
/* 1.2.752.43.13.17 */
static gss_OID_desc gss_krb5_set_time_offset_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x11")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_SET_TIME_OFFSET_X =
&gss_krb5_set_time_offset_x_desc;
/* 1.2.752.43.13.18 */
static gss_OID_desc gss_krb5_get_time_offset_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x12")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_GET_TIME_OFFSET_X =
&gss_krb5_get_time_offset_x_desc;
/* 1.2.752.43.13.19 */
static gss_OID_desc gss_krb5_plugin_register_x_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0d\x13")};
gss_OID GSSAPI_LIB_VARIABLE GSS_KRB5_PLUGIN_REGISTER_X =
&gss_krb5_plugin_register_x_desc;
/* 1.2.752.43.14.1 */
static gss_OID_desc gss_sasl_digest_md5_mechanism_desc =
{6, rk_UNCONST("\x2a\x85\x70\x2b\x0e\x01") };
gss_OID GSSAPI_LIB_VARIABLE GSS_SASL_DIGEST_MD5_MECHANISM =
&gss_sasl_digest_md5_mechanism_desc;
/*
* Context for krb5 calls.
*/
/*
*
*/
static gssapi_mech_interface_desc krb5_mech = {
GMI_VERSION,
"kerberos 5",
{9, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02" },
_gsskrb5_acquire_cred,
_gsskrb5_release_cred,
_gsskrb5_init_sec_context,
_gsskrb5_accept_sec_context,
_gsskrb5_process_context_token,
_gsskrb5_delete_sec_context,
_gsskrb5_context_time,
_gsskrb5_get_mic,
_gsskrb5_verify_mic,
_gsskrb5_wrap,
_gsskrb5_unwrap,
_gsskrb5_display_status,
_gsskrb5_indicate_mechs,
_gsskrb5_compare_name,
_gsskrb5_display_name,
_gsskrb5_import_name,
_gsskrb5_export_name,
_gsskrb5_release_name,
_gsskrb5_inquire_cred,
_gsskrb5_inquire_context,
_gsskrb5_wrap_size_limit,
_gsskrb5_add_cred,
_gsskrb5_inquire_cred_by_mech,
_gsskrb5_export_sec_context,
_gsskrb5_import_sec_context,
_gsskrb5_inquire_names_for_mech,
_gsskrb5_inquire_mechs_for_name,
_gsskrb5_canonicalize_name,
_gsskrb5_duplicate_name,
_gsskrb5_inquire_sec_context_by_oid,
_gsskrb5_inquire_cred_by_oid,
_gsskrb5_set_sec_context_option,
_gsskrb5_set_cred_option,
_gsskrb5_pseudo_random,
_gk_wrap_iov,
_gk_unwrap_iov,
_gk_wrap_iov_length,
_gsskrb5_store_cred,
_gsskrb5_export_cred,
_gsskrb5_import_cred
};
gssapi_mech_interface
__gss_krb5_initialize(void)
{
return &krb5_mech;
}
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