freebsd-dev/lib/libgssapi/gss_inquire_cred.c

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/*-
* Copyright (c) 2005 Doug Rabson
* 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.
*
* $FreeBSD$
*/
#include <gssapi/gssapi.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "mech_switch.h"
#include "name.h"
#include "cred.h"
#define AUSAGE 1
#define IUSAGE 2
static void
updateusage(gss_cred_usage_t usage, int *usagemask)
{
if (usage == GSS_C_BOTH)
*usagemask |= AUSAGE | IUSAGE;
else if (usage == GSS_C_ACCEPT)
*usagemask |= AUSAGE;
else if (usage == GSS_C_INITIATE)
*usagemask |= IUSAGE;
}
OM_uint32
gss_inquire_cred(OM_uint32 *minor_status,
const gss_cred_id_t cred_handle,
gss_name_t *name_ret,
OM_uint32 *lifetime,
gss_cred_usage_t *cred_usage,
gss_OID_set *mechanisms)
{
OM_uint32 major_status;
struct _gss_mech_switch *m;
struct _gss_cred *cred = (struct _gss_cred *) cred_handle;
struct _gss_name *name;
struct _gss_mechanism_name *mn;
OM_uint32 min_lifetime;
int found = 0;
int usagemask = 0;
gss_cred_usage_t usage;
_gss_load_mech();
*minor_status = 0;
if (name_ret)
*name_ret = GSS_C_NO_NAME;
if (lifetime)
*lifetime = 0;
if (cred_usage)
*cred_usage = 0;
if (mechanisms)
*mechanisms = GSS_C_NO_OID_SET;
if (name_ret) {
name = malloc(sizeof(struct _gss_name));
if (name == NULL) {
*minor_status = ENOMEM;
return (GSS_S_FAILURE);
}
memset(name, 0, sizeof(struct _gss_name));
SLIST_INIT(&name->gn_mn);
} else {
name = NULL;
}
if (mechanisms) {
major_status = gss_create_empty_oid_set(minor_status,
mechanisms);
if (major_status) {
if (name) free(name);
return (major_status);
}
}
min_lifetime = GSS_C_INDEFINITE;
if (cred) {
struct _gss_mechanism_cred *mc;
SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) {
gss_name_t mc_name;
OM_uint32 mc_lifetime;
major_status = mc->gmc_mech->gm_inquire_cred(minor_status,
mc->gmc_cred, &mc_name, &mc_lifetime, &usage, NULL);
if (major_status)
continue;
updateusage(usage, &usagemask);
if (name && mc_name) {
mn = malloc(sizeof(struct _gss_mechanism_name));
if (!mn) {
mc->gmc_mech->gm_release_name(minor_status,
&mc_name);
continue;
}
mn->gmn_mech = mc->gmc_mech;
mn->gmn_mech_oid = mc->gmc_mech_oid;
mn->gmn_name = mc_name;
SLIST_INSERT_HEAD(&name->gn_mn, mn, gmn_link);
} else if (mc_name) {
mc->gmc_mech->gm_release_name(minor_status,
&mc_name);
}
if (mc_lifetime < min_lifetime)
min_lifetime = mc_lifetime;
if (mechanisms)
gss_add_oid_set_member(minor_status,
mc->gmc_mech_oid, mechanisms);
found++;
}
} else {
SLIST_FOREACH(m, &_gss_mechs, gm_link) {
gss_name_t mc_name;
OM_uint32 mc_lifetime;
major_status = m->gm_inquire_cred(minor_status,
GSS_C_NO_CREDENTIAL, &mc_name, &mc_lifetime,
&usage, NULL);
if (major_status)
continue;
updateusage(usage, &usagemask);
if (name && mc_name) {
mn = malloc(
sizeof(struct _gss_mechanism_name));
if (!mn) {
m->gm_release_name(
minor_status, &mc_name);
continue;
}
mn->gmn_mech = m;
mn->gmn_mech_oid = &m->gm_mech_oid;
mn->gmn_name = mc_name;
SLIST_INSERT_HEAD(&name->gn_mn, mn, gmn_link);
} else if (mc_name) {
m->gm_release_name(minor_status,
&mc_name);
}
if (mc_lifetime < min_lifetime)
min_lifetime = mc_lifetime;
if (mechanisms)
gss_add_oid_set_member(minor_status,
&m->gm_mech_oid, mechanisms);
found++;
}
}
if (found == 0) {
gss_name_t n = (gss_name_t)name;
if (n)
gss_release_name(minor_status, &n);
gss_release_oid_set(minor_status, mechanisms);
*minor_status = 0;
return (GSS_S_NO_CRED);
}
*minor_status = 0;
if (name_ret)
*name_ret = (gss_name_t) name;
if (lifetime)
*lifetime = min_lifetime;
if (cred_usage) {
if ((usagemask & (AUSAGE|IUSAGE)) == (AUSAGE|IUSAGE))
*cred_usage = GSS_C_BOTH;
else if (usagemask & IUSAGE)
*cred_usage = GSS_C_INITIATE;
else if (usagemask & AUSAGE)
*cred_usage = GSS_C_ACCEPT;
}
return (GSS_S_COMPLETE);
}