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/**
* @file
* Defines the public interface for accessing contexts.
*
* @author Kevin Carr kcarr@tresys.com
* @author Jeremy A. Mowery jmowery@tresys.com
* @author Jason Tang jtang@tresys.com
*
* Copyright (C) 2006-2007 Tresys Technology, LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>
#include <qpol/policy.h>
#include <qpol/context_query.h>
#include <qpol/user_query.h>
#include <qpol/role_query.h>
#include <qpol/type_query.h>
#include <qpol/mls_query.h>
#include <sepol/policydb/policydb.h>
#include <sepol/policydb/context.h>
#include "qpol_internal.h"
int qpol_context_get_user(const qpol_policy_t * policy, const qpol_context_t * context, const qpol_user_t ** user)
{
policydb_t *db = NULL;
context_struct_t *internal_context = NULL;
if (user != NULL)
*user = NULL;
if (policy == NULL || context == NULL || user == NULL) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
internal_context = (context_struct_t *) context;
db = &policy->p->p;
*user = (qpol_user_t *) db->user_val_to_struct[internal_context->user - 1];
return STATUS_SUCCESS;
}
int qpol_context_get_role(const qpol_policy_t * policy, const qpol_context_t * context, const qpol_role_t ** role)
{
policydb_t *db = NULL;
context_struct_t *internal_context = NULL;
if (role != NULL)
*role = NULL;
if (policy == NULL || context == NULL || role == NULL) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
internal_context = (context_struct_t *) context;
db = &policy->p->p;
*role = (qpol_role_t *) db->role_val_to_struct[internal_context->role - 1];
return STATUS_SUCCESS;
}
int qpol_context_get_type(const qpol_policy_t * policy, const qpol_context_t * context, const qpol_type_t ** type)
{
policydb_t *db = NULL;
context_struct_t *internal_context = NULL;
if (type != NULL)
*type = NULL;
if (policy == NULL || context == NULL || type == NULL) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
internal_context = (context_struct_t *) context;
db = &policy->p->p;
*type = (qpol_type_t *) db->type_val_to_struct[internal_context->type - 1];
return STATUS_SUCCESS;
}
int qpol_context_get_range(const qpol_policy_t * policy, const qpol_context_t * context, const qpol_mls_range_t ** range)
{
context_struct_t *internal_context = NULL;
if (range != NULL)
*range = NULL;
if (policy == NULL || context == NULL || range == NULL) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
if (!qpol_policy_has_capability(policy, QPOL_CAP_MLS)) {
*range = NULL;
} else {
internal_context = (context_struct_t *) context;
*range = (qpol_mls_range_t *) & internal_context->range;
}
return STATUS_SUCCESS;
}
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