74 lines
2.4 KiB
Rust
74 lines
2.4 KiB
Rust
use heapless::Vec;
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use crate::encoding::variable_byte_integer::VariableByteIntegerEncoder;
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use crate::packet::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 super::packet_type::PacketType;
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use super::property::Property;
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pub const MAX_PROPERTIES: usize = 18;
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pub struct ConnackPacket<'a> {
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// 7 - 4 mqtt control packet type, 3-0 flagy
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pub fixed_header: u8,
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// 1 - 4 B lenght of variable header + len of payload
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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> ConnackPacket<'a> {
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pub fn decode_connack_packet(&mut self, buff_reader: &mut BuffReader<'a>) {
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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;
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}
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self.ack_flags = buff_reader.read_u8().unwrap();
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self.connect_reason_code = buff_reader.read_u8().unwrap();
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self.decode_properties(buff_reader);
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}
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}
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impl<'a> Packet<'a> for ConnackPacket<'a> {
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fn encode(&mut self, buffer: &mut [u8]) {
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let mut buff_writer = BuffWriter::new(buffer);
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buff_writer.write_u8(self.fixed_header);
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let mut property_len_enc = VariableByteIntegerEncoder::encode(self.property_len).unwrap();
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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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}
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fn decode(&mut self, buff_reader: &mut BuffReader<'a>) {
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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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