111 lines
4.0 KiB
Rust
111 lines
4.0 KiB
Rust
/*
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* MIT License
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*
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* Copyright (c) [2022] [Ondrej Babec <ond.babec@gmail.com>]
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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use heapless::Vec;
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use crate::encoding::variable_byte_integer::VariableByteIntegerEncoder;
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use crate::packet::v5::mqtt_packet::Packet;
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use crate::utils::buffer_reader::BuffReader;
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use crate::utils::buffer_writer::BuffWriter;
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use crate::utils::types::BufferError;
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use super::packet_type::PacketType;
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use super::property::Property;
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pub struct ConnackPacket<'a, const MAX_PROPERTIES: usize> {
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pub fixed_header: u8,
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pub remain_len: u32,
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pub ack_flags: u8,
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pub connect_reason_code: u8,
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pub property_len: u32,
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pub properties: Vec<Property<'a>, MAX_PROPERTIES>,
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}
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impl<'a, const MAX_PROPERTIES: usize> ConnackPacket<'a, MAX_PROPERTIES> {
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pub fn decode_connack_packet(
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&mut self,
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buff_reader: &mut BuffReader<'a>,
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) -> Result<(), BufferError> {
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if self.decode_fixed_header(buff_reader)? != (PacketType::Connack).into() {
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log::error!("Packet you are trying to decode is not CONNACK packet!");
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return Err(BufferError::PacketTypeMismatch);
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}
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self.ack_flags = buff_reader.read_u8()?;
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self.connect_reason_code = buff_reader.read_u8()?;
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self.decode_properties(buff_reader)
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}
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}
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impl<'a, const MAX_PROPERTIES: usize> Packet<'a> for ConnackPacket<'a, MAX_PROPERTIES> {
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fn new() -> Self {
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Self {
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fixed_header: PacketType::Connack.into(),
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remain_len: 0,
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ack_flags: 0,
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connect_reason_code: 0,
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property_len: 0,
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properties: Vec::<Property<'a>, MAX_PROPERTIES>::new(),
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}
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}
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fn encode(&mut self, buffer: &mut [u8], buffer_len: usize) -> Result<usize, BufferError> {
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let mut buff_writer = BuffWriter::new(buffer, buffer_len);
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buff_writer.write_u8(self.fixed_header)?;
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let property_len_enc = VariableByteIntegerEncoder::encode(self.property_len)?;
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let property_len_len = VariableByteIntegerEncoder::len(property_len_enc);
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let rm_len: u32 = 2 + self.property_len + property_len_len as u32;
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buff_writer.write_variable_byte_int(rm_len)?;
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buff_writer.write_u8(self.ack_flags)?;
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buff_writer.write_u8(self.connect_reason_code)?;
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buff_writer.write_variable_byte_int(self.property_len)?;
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buff_writer.encode_properties(&self.properties)?;
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Ok(buff_writer.position)
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}
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fn decode(&mut self, buff_reader: &mut BuffReader<'a>) -> Result<(), BufferError> {
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self.decode_connack_packet(buff_reader)
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}
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fn set_property_len(&mut self, value: u32) {
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self.property_len = value;
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}
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fn get_property_len(&mut self) -> u32 {
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return self.property_len;
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}
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fn push_to_properties(&mut self, property: Property<'a>) {
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self.properties.push(property);
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}
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fn set_fixed_header(&mut self, header: u8) {
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self.fixed_header = header;
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}
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fn set_remaining_len(&mut self, remaining_len: u32) {
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self.remain_len = remaining_len;
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}
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}
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