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https://github.com/SELinuxProject/setools
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757a16750b
Correspondingly fix MLS object factories to immediately check if MLS is disabled and short circuit if so.
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/**
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* @file
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* Defines the public interface for accessing contexts.
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*
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* @author Kevin Carr kcarr@tresys.com
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* @author Jeremy A. Mowery jmowery@tresys.com
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* @author Jason Tang jtang@tresys.com
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*
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* Copyright (C) 2006-2007 Tresys Technology, LLC
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <qpol/policy.h>
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#include <qpol/context_query.h>
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#include <qpol/user_query.h>
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#include <qpol/role_query.h>
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#include <qpol/type_query.h>
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#include <qpol/mls_query.h>
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#include <sepol/policydb/policydb.h>
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#include <sepol/policydb/context.h>
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#include "qpol_internal.h"
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int qpol_context_get_user(const qpol_policy_t * policy, const qpol_context_t * context, const qpol_user_t ** user)
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{
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policydb_t *db = NULL;
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context_struct_t *internal_context = NULL;
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if (user != NULL)
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*user = NULL;
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if (policy == NULL || context == NULL || user == NULL) {
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ERR(policy, "%s", strerror(EINVAL));
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errno = EINVAL;
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return STATUS_ERR;
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}
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internal_context = (context_struct_t *) context;
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db = &policy->p->p;
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*user = (qpol_user_t *) db->user_val_to_struct[internal_context->user - 1];
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return STATUS_SUCCESS;
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}
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int qpol_context_get_role(const qpol_policy_t * policy, const qpol_context_t * context, const qpol_role_t ** role)
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{
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policydb_t *db = NULL;
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context_struct_t *internal_context = NULL;
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if (role != NULL)
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*role = NULL;
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if (policy == NULL || context == NULL || role == NULL) {
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ERR(policy, "%s", strerror(EINVAL));
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errno = EINVAL;
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return STATUS_ERR;
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}
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internal_context = (context_struct_t *) context;
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db = &policy->p->p;
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*role = (qpol_role_t *) db->role_val_to_struct[internal_context->role - 1];
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return STATUS_SUCCESS;
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}
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int qpol_context_get_type(const qpol_policy_t * policy, const qpol_context_t * context, const qpol_type_t ** type)
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{
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policydb_t *db = NULL;
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context_struct_t *internal_context = NULL;
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if (type != NULL)
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*type = NULL;
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if (policy == NULL || context == NULL || type == NULL) {
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ERR(policy, "%s", strerror(EINVAL));
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errno = EINVAL;
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return STATUS_ERR;
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}
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internal_context = (context_struct_t *) context;
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db = &policy->p->p;
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*type = (qpol_type_t *) db->type_val_to_struct[internal_context->type - 1];
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return STATUS_SUCCESS;
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}
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int qpol_context_get_range(const qpol_policy_t * policy, const qpol_context_t * context, const qpol_mls_range_t ** range)
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{
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context_struct_t *internal_context = NULL;
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if (range != NULL)
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*range = NULL;
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if (policy == NULL || context == NULL || range == NULL) {
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ERR(policy, "%s", strerror(EINVAL));
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errno = EINVAL;
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return STATUS_ERR;
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}
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if (!qpol_policy_has_capability(policy, QPOL_CAP_MLS)) {
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*range = NULL;
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} else {
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internal_context = (context_struct_t *) context;
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*range = (qpol_mls_range_t *) & internal_context->range;
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}
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return STATUS_SUCCESS;
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}
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