/* Copyright (C) 2018 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.

 */

use crate::smb::smb::*;

#[derive(AppLayerEvent)]

pub enum SMBEvent {

    InternalError,

    MalformedData,

    RecordOverflow,

    MalformedNtlmsspRequest,

    MalformedNtlmsspResponse,

    DuplicateNegotiate,

    NegotiateMalformedDialects,

    FileOverlap,

    /// A request was seen in the to client direction.

    RequestToClient,

    /// A response was seen in the to server direction,

    ResponseToServer,

    /// Negotiated max sizes exceed our limit

    NegotiateMaxReadSizeTooLarge,

    NegotiateMaxWriteSizeTooLarge,

    /// READ request asking for more than `max_read_size`

    ReadRequestTooLarge,

    /// READ response bigger than `max_read_size`

    ReadResponseTooLarge,

    ReadQueueSizeExceeded,

    ReadQueueCntExceeded,

    /// WRITE request for more than `max_write_size`

    WriteRequestTooLarge,

    WriteQueueSizeExceeded,

    WriteQueueCntExceeded,

    /// Unusual NTLMSSP fields order

    UnusualNtlmsspOrder,

    /// Too many live transactions in one flow

    TooManyTransactions,

}

impl SMBTransaction {

    /// Set event.

    pub fn set_event(&mut self, e: SMBEvent) {

        self.tx_data.set_event(e as u8);

    }

    /// Set events from vector of events.

    pub fn set_events(&mut self, events: Vec<SMBEvent>) {

        for e in events {

            self.tx_data.set_event(e as u8);

        }

    }

}

impl SMBState {

    /// Set an event. The event is set on the most recent transaction.

    pub fn set_event(&mut self, event: SMBEvent) {

        let len = self.transactions.len();

        if len == 0 {

            return;

        }

        let tx = &mut self.transactions[len - 1];

        tx.set_event(event);

    }

}