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FakeSFTP
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Erasing arguments with Vec<u8>.

This commit is contained in:
sergiotarxz 2020-11-06 23:04:21 +01:00
parent 91e112d825
commit 8dc05f5346
1 changed files with 16 additions and 5 deletions
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21
src/packet.rs
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@ -5,6 +5,7 @@ use crate::constants::SSH_FXP_INIT;
use crate::constants::SSH_FXP_VERSION; use crate::constants::SSH_FXP_VERSION;
use std::io::{BufReader, BufWriter, Read, Write}; use std::io::{BufReader, BufWriter, Read, Write};
use std::process::exit;
pub fn dispatch_packet(packet: Packet) { pub fn dispatch_packet(packet: Packet) {
let mut buff_stdout = BufWriter::new(std::io::stdout()); let mut buff_stdout = BufWriter::new(std::io::stdout());
@ -31,7 +32,9 @@ pub fn dispatch_packet(packet: Packet) {
}; };
let serialized_response = response_packet.serialize(); let serialized_response = response_packet.serialize();
eprintln!("{:#?}", &serialized_response); eprintln!("{:#?}", &serialized_response);
buff_stdout.write(&serialized_response).expect("Unable to write to stdout."); buff_stdout
.write(&serialized_response)
.expect("Unable to write to stdout.");
buff_stdout.flush().expect("Unable to flush stdout."); buff_stdout.flush().expect("Unable to flush stdout.");
} }
} }
@ -56,18 +59,26 @@ impl Packet {
packet_header.length, packet_header.type_packet packet_header.length, packet_header.type_packet
); );
let mut data: Vec<u8> = Vec::new(); let mut data: Vec<u8> = Vec::new();
data.resize(packet_header.length as usize - 1, 0); if packet_header.length == 0 {
exit(0);
}
if packet_header.length as usize - 1 > 34000 {
panic!(
"This packet is bigger than supported {}, refusing to allocate memory to handle that.", packet_header.length
);
}
data.resize(packet_header.length as usize - 1, 10);
match buff_stdin.read(&mut data) { match buff_stdin.read(&mut data) {
Ok(ok) => ok, Ok(ok) => ok,
Err(err) => panic!("Could not fetch data: {}", err), Err(err) => panic!("Could not fetch data: {}", err),
}; };
eprintln!("{:#?}", data); eprintln!("{:#?}", data);
Packet::deserialize(packet_header, data) Packet::deserialize(packet_header, &data)
} }
pub fn deserialize(packet_header: header::PacketHeader, data: Vec<u8>) -> Packet { pub fn deserialize(packet_header: header::PacketHeader, data: &[u8]) -> Packet {
Packet { Packet {
packet_header: packet_header, packet_header: packet_header,
data: data, data: data.to_vec(),
} }
} }
pub fn serialize(&mut self) -> Vec<u8> { pub fn serialize(&mut self) -> Vec<u8> {