e6d1c10808
It turns out gss_add_cred() really needed a complete rewrite. It's much better to first have a gss_duplicate_cred() (which has been needed for other reasons anyways), and use that when the input_cred_handle is not GSS_C_NO_CREDENTIAL and output_cred_handle is not NULL, then mutate that duplicate credential handle (or the input_cred_handle if output_cred_handle is NULL).
208 lines
7.6 KiB
C
208 lines
7.6 KiB
C
/*-
|
|
* Copyright (c) 2005 Doug Rabson
|
|
* Copyright (c) 2018 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD: src/lib/libgssapi/gss_add_cred.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
|
|
*/
|
|
|
|
#include "mech_locl.h"
|
|
|
|
struct _gss_mechanism_cred *
|
|
_gss_copy_cred(struct _gss_mechanism_cred *mc)
|
|
{
|
|
struct _gss_mechanism_cred *new_mc;
|
|
gssapi_mech_interface m = mc->gmc_mech;
|
|
OM_uint32 major_status, minor_status;
|
|
gss_name_t name;
|
|
gss_cred_id_t cred;
|
|
OM_uint32 initiator_lifetime, acceptor_lifetime;
|
|
gss_cred_usage_t cred_usage;
|
|
|
|
major_status = m->gm_inquire_cred_by_mech(&minor_status, mc->gmc_cred,
|
|
mc->gmc_mech_oid, &name,
|
|
&initiator_lifetime,
|
|
&acceptor_lifetime, &cred_usage);
|
|
if (major_status) {
|
|
_gss_mg_error(m, major_status, minor_status);
|
|
return 0;
|
|
}
|
|
|
|
major_status = m->gm_add_cred(&minor_status,
|
|
GSS_C_NO_CREDENTIAL, name, mc->gmc_mech_oid,
|
|
cred_usage, initiator_lifetime, acceptor_lifetime,
|
|
&cred, 0, 0, 0);
|
|
m->gm_release_name(&minor_status, &name);
|
|
|
|
if (major_status) {
|
|
_gss_mg_error(m, major_status, minor_status);
|
|
return 0;
|
|
}
|
|
|
|
new_mc = malloc(sizeof(struct _gss_mechanism_cred));
|
|
if (!new_mc) {
|
|
m->gm_release_cred(&minor_status, &cred);
|
|
return 0;
|
|
}
|
|
new_mc->gmc_mech = m;
|
|
new_mc->gmc_mech_oid = &m->gm_mech_oid;
|
|
new_mc->gmc_cred = cred;
|
|
|
|
return new_mc;
|
|
}
|
|
|
|
GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
|
|
gss_add_cred(OM_uint32 *minor_status,
|
|
gss_const_cred_id_t input_cred_handle,
|
|
gss_const_name_t desired_name,
|
|
const gss_OID desired_mech,
|
|
gss_cred_usage_t cred_usage,
|
|
OM_uint32 initiator_time_req,
|
|
OM_uint32 acceptor_time_req,
|
|
gss_cred_id_t *output_cred_handle,
|
|
gss_OID_set *actual_mechs,
|
|
OM_uint32 *initiator_time_rec,
|
|
OM_uint32 *acceptor_time_rec)
|
|
{
|
|
OM_uint32 major_status;
|
|
gssapi_mech_interface m;
|
|
gss_cred_id_t release_cred = GSS_C_NO_CREDENTIAL;
|
|
struct _gss_cred *mut_cred;
|
|
struct _gss_mechanism_cred *mc;
|
|
struct _gss_mechanism_cred *new_mc = NULL;
|
|
struct _gss_mechanism_name *mn = NULL;
|
|
OM_uint32 junk;
|
|
|
|
*minor_status = 0;
|
|
|
|
/* Input validation */
|
|
if (output_cred_handle)
|
|
*output_cred_handle = GSS_C_NO_CREDENTIAL;
|
|
if (initiator_time_rec)
|
|
*initiator_time_rec = 0;
|
|
if (acceptor_time_rec)
|
|
*acceptor_time_rec = 0;
|
|
if (actual_mechs)
|
|
*actual_mechs = GSS_C_NO_OID_SET;
|
|
if ((m = __gss_get_mechanism(desired_mech)) == NULL)
|
|
return GSS_S_BAD_MECH;
|
|
if (input_cred_handle == GSS_C_NO_CREDENTIAL &&
|
|
output_cred_handle == NULL) {
|
|
return GSS_S_CALL_INACCESSIBLE_WRITE;
|
|
}
|
|
|
|
/* Setup mut_cred to be the credential we mutate */
|
|
if (input_cred_handle != GSS_C_NO_CREDENTIAL &&
|
|
output_cred_handle != NULL) {
|
|
gss_cred_id_t new_cred;
|
|
|
|
/* Duplicate the input credential */
|
|
major_status = gss_duplicate_cred(minor_status, input_cred_handle,
|
|
&new_cred);
|
|
if (major_status != GSS_S_COMPLETE)
|
|
return major_status;
|
|
mut_cred = (struct _gss_cred *)new_cred;
|
|
release_cred = (gss_cred_id_t)mut_cred;
|
|
} else if (input_cred_handle != GSS_C_NO_CREDENTIAL) {
|
|
/* Mutate the input credentials */
|
|
mut_cred = rk_UNCONST(input_cred_handle);
|
|
} else {
|
|
if ((mut_cred = malloc(sizeof(*mut_cred))) == NULL) {
|
|
*minor_status = ENOMEM;
|
|
return GSS_S_UNAVAILABLE;
|
|
}
|
|
HEIM_SLIST_INIT(&mut_cred->gc_mc);
|
|
release_cred = (gss_cred_id_t)mut_cred;
|
|
}
|
|
|
|
/* Find an MN, if any */
|
|
if (desired_name) {
|
|
major_status = _gss_find_mn(minor_status,
|
|
(struct _gss_name *)desired_name,
|
|
desired_mech, &mn);
|
|
if (major_status != GSS_S_COMPLETE)
|
|
goto done;
|
|
}
|
|
|
|
/*
|
|
* We go through all the mc attached to the input_cred_handle and check the
|
|
* mechanism. If it matches, we call gss_add_cred for that mechanism,
|
|
* otherwise we just add a new mc.
|
|
*/
|
|
HEIM_SLIST_FOREACH(mc, &mut_cred->gc_mc, gmc_link) {
|
|
if (!gss_oid_equal(mc->gmc_mech_oid, desired_mech))
|
|
continue;
|
|
major_status = m->gm_add_cred(minor_status,
|
|
(gss_const_cred_id_t)mc,
|
|
mn ? mn->gmn_name : GSS_C_NO_NAME,
|
|
desired_mech, cred_usage,
|
|
initiator_time_req, acceptor_time_req,
|
|
NULL, NULL, initiator_time_rec,
|
|
acceptor_time_rec);
|
|
if (major_status != GSS_S_COMPLETE)
|
|
_gss_mg_error(m, major_status, *minor_status);
|
|
goto done;
|
|
}
|
|
|
|
new_mc = malloc(sizeof(struct _gss_mechanism_cred));
|
|
if (!new_mc) {
|
|
*minor_status = ENOMEM;
|
|
major_status = GSS_S_FAILURE;
|
|
goto done;
|
|
}
|
|
new_mc->gmc_mech = m;
|
|
new_mc->gmc_mech_oid = &m->gm_mech_oid;
|
|
|
|
major_status = m->gm_add_cred(minor_status,
|
|
GSS_C_NO_CREDENTIAL, mn ? mn->gmn_name : GSS_C_NO_NAME,
|
|
desired_mech, cred_usage, initiator_time_req, acceptor_time_req,
|
|
&new_mc->gmc_cred, NULL, initiator_time_rec, acceptor_time_rec);
|
|
if (major_status != GSS_S_COMPLETE) {
|
|
_gss_mg_error(m, major_status, *minor_status);
|
|
goto done;
|
|
}
|
|
HEIM_SLIST_INSERT_HEAD(&mut_cred->gc_mc, new_mc, gmc_link);
|
|
new_mc = NULL;
|
|
|
|
done:
|
|
/* Lastly, we have to inquire the cred to get the actual_mechs */
|
|
if (major_status == GSS_S_COMPLETE && actual_mechs != NULL) {
|
|
major_status = gss_inquire_cred(minor_status,
|
|
(gss_const_cred_id_t)mut_cred, NULL,
|
|
NULL, NULL, actual_mechs);
|
|
if (major_status != GSS_S_COMPLETE)
|
|
_gss_mg_error(m, major_status, *minor_status);
|
|
}
|
|
if (major_status == GSS_S_COMPLETE) {
|
|
if (output_cred_handle != NULL)
|
|
*output_cred_handle = (gss_cred_id_t)mut_cred;
|
|
} else {
|
|
gss_release_cred(&junk, &release_cred);
|
|
}
|
|
free(new_mc);
|
|
return major_status;
|
|
}
|
|
|