112 lines
4.1 KiB
Rust
112 lines
4.1 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, TopicFilter};
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use super::property::Property;
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pub struct UnsubscriptionPacket<'a, const MAX_FILTERS: usize, 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 packet_identifier: u16,
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pub property_len: u32,
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pub properties: Vec<Property<'a>, MAX_PROPERTIES>,
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pub topic_filter_len: u16,
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pub topic_filters: Vec<TopicFilter<'a>, MAX_FILTERS>,
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}
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impl<'a, const MAX_FILTERS: usize, const MAX_PROPERTIES: usize>
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UnsubscriptionPacket<'a, MAX_FILTERS, MAX_PROPERTIES>
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{
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}
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impl<'a, const MAX_FILTERS: usize, const MAX_PROPERTIES: usize> Packet<'a>
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for UnsubscriptionPacket<'a, MAX_FILTERS, MAX_PROPERTIES>
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{
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fn new() -> Self {
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Self {
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fixed_header: 0,
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remain_len: 0,
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packet_identifier: 0,
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property_len: 0,
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properties: Vec::<Property<'a>, MAX_PROPERTIES>::new(),
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topic_filter_len: 0,
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topic_filters: Vec::<TopicFilter<'a>, MAX_FILTERS>::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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let mut rm_ln = self.property_len;
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let property_len_enc: [u8; 4] = VariableByteIntegerEncoder::encode(self.property_len)?;
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let property_len_len = VariableByteIntegerEncoder::len(property_len_enc);
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rm_ln = rm_ln + property_len_len as u32 + 4 + self.topic_filter_len as u32;
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buff_writer.write_u8(self.fixed_header)?;
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buff_writer.write_variable_byte_int(rm_ln)?;
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buff_writer.write_u16(self.packet_identifier)?;
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buff_writer.write_variable_byte_int(self.property_len)?;
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buff_writer.encode_properties::<MAX_PROPERTIES>(&self.properties)?;
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buff_writer.write_u16(self.topic_filter_len)?;
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buff_writer.encode_topic_filters_ref(
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false,
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self.topic_filter_len as usize,
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&self.topic_filters,
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)?;
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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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log::error!("Unsubscribe packet does not support decode funtion on client!");
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Err(BufferError::WrongPacketToDecode)
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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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