mirror of https://github.com/OISF/suricata
rust/direction: move direction to own file (cleanup)
Move the implementation of Direction to its own file, direction.rs.pull/12424/head
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/* Copyright (C) 2017-2025 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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pub const DIR_BOTH: u8 = 0b0000_1100;
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const DIR_TOSERVER: u8 = 0b0000_0100;
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const DIR_TOCLIENT: u8 = 0b0000_1000;
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#[repr(C)]
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#[derive(Debug, PartialEq, Eq, Clone, Copy)]
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pub enum Direction {
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ToServer = 0x04,
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ToClient = 0x08,
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}
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impl Direction {
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/// Return true if the direction is to server.
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pub fn is_to_server(&self) -> bool {
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matches!(self, Self::ToServer)
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}
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/// Return true if the direction is to client.
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pub fn is_to_client(&self) -> bool {
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matches!(self, Self::ToClient)
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}
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pub fn index(&self) -> usize {
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match self {
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Self::ToClient => 0,
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_ => 1,
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}
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}
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}
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impl Default for Direction {
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fn default() -> Self {
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Direction::ToServer
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}
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}
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impl std::fmt::Display for Direction {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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Self::ToServer => write!(f, "toserver"),
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Self::ToClient => write!(f, "toclient"),
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}
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}
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}
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impl From<u8> for Direction {
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fn from(d: u8) -> Self {
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if d & (DIR_TOSERVER | DIR_TOCLIENT) == (DIR_TOSERVER | DIR_TOCLIENT) {
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debug_validate_fail!("Both directions are set");
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Direction::ToServer
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} else if d & DIR_TOSERVER != 0 {
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Direction::ToServer
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} else if d & DIR_TOCLIENT != 0 {
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Direction::ToClient
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} else {
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debug_validate_fail!("Unknown direction!!");
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Direction::ToServer
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}
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}
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}
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impl From<Direction> for u8 {
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fn from(d: Direction) -> u8 {
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d as u8
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn test_direction() {
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assert!(Direction::ToServer.is_to_server());
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assert!(!Direction::ToServer.is_to_client());
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assert!(Direction::ToClient.is_to_client());
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assert!(!Direction::ToClient.is_to_server());
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}
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}
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