Expand description
A TFTP protocol parser. Given bytes and a sawp::parser::Direction
, it will
attempt to parse the bytes and return a Message
. The parser will
inform the caller about what went wrong if no message is returned (see sawp::parser::Parse
for details on possible return types). TFTP ignores Direction.
The following protocol references were used to create this module:
§Example
use sawp::parser::{Direction, Parse};
use sawp::error::Error;
use sawp::error::ErrorKind;
use sawp_tftp::{TFTP, Message};
fn parse_bytes(input: &[u8]) -> std::result::Result<&[u8], Error> {
let parser = TFTP {};
let mut bytes = input;
while bytes.len() > 0 {
match parser.parse(bytes, Direction::Unknown) {
// The parser succeeded and returned the remaining bytes and the parsed TFTP message
Ok((rest, Some(message))) => {
println!("TFTP message: {:?}", message);
bytes = rest;
}
// The parser recognized that this might be TFTP and made some progress,
// but more bytes are needed
Ok((rest, None)) => return Ok(rest),
// The parser was unable to determine whether this was TFTP or not and more
// bytes are needed
Err(Error { kind: ErrorKind::Incomplete(_) }) => return Ok(bytes),
// The parser determined that this was not TFTP
Err(e) => return Err(e)
}
}
Ok(bytes)
}
Structs§
- Breakdown of the parsed TFTP bytes
Enums§
- The error code is an integer indicating the nature of the error.
- The TFTP header of a packet contains the opcode associated with that packet. TFTP supports five types of packets
- Represents the various types of TFTP Packets