/* Copyright (C) 2017-2019 Open Information Security Foundation
 *
 * You can copy, redistribute or modify this Program under the terms of
 * the GNU General Public License version 2 as published by the Free
 * Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

// written by Pierre Chifflier  <chifflier@wzdftpd.net>

use crate::snmp::snmp::SNMPTransaction;

#[no_mangle]
pub unsafe extern "C" fn rs_snmp_tx_get_version(tx: &mut SNMPTransaction, version: *mut u32) {
    debug_assert!(tx.version != 0, "SNMP version is 0");
    *version = tx.version;
}

#[no_mangle]
pub unsafe extern "C" fn rs_snmp_tx_get_community(
    tx: &mut SNMPTransaction, buf: *mut *const u8, len: *mut u32,
) {
    if let Some(ref c) =  tx.community {
        *buf = c.as_ptr();
        *len = c.len() as u32;
    }
}

#[no_mangle]
pub unsafe extern "C" fn rs_snmp_tx_get_pdu_type(tx: &mut SNMPTransaction, pdu_type: *mut u32) {
    match tx.info {
        Some(ref info) => {
            *pdu_type = info.pdu_type.0;
        }
        None => {
            *pdu_type = 0xffffffff;
        }
    }
}

#[no_mangle]
pub unsafe extern "C" fn rs_snmp_tx_get_usm(
    tx: &mut SNMPTransaction, buf: *mut *const u8, len: *mut u32,
) {
    if let Some(ref c) =  tx.usm {
        *buf = c.as_ptr();
        *len = c.len() as u32;
    }
}