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extern crate smoltcp; | ||
extern crate getopts; | ||
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use std::cell::RefCell; | ||
use std::io::{self, Read, Write}; | ||
use std::path::Path; | ||
use std::fs::File; | ||
use std::env; | ||
use std::process::exit; | ||
use smoltcp::phy::{PcapLinkType, PcapSink}; | ||
use getopts::Options; | ||
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fn convert(packet_filename: &Path, pcap_filename: &Path, link_type: PcapLinkType) | ||
-> io::Result<()> { | ||
let mut packet_file = File::open(packet_filename)?; | ||
let mut packet = Vec::new(); | ||
packet_file.read_to_end(&mut packet)?; | ||
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let pcap = RefCell::new(Vec::new()); | ||
PcapSink::global_header(&pcap, link_type); | ||
PcapSink::packet(&pcap, 0, &packet[..]); | ||
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let mut pcap_file = File::create(pcap_filename)?; | ||
pcap_file.write_all(&pcap.borrow()[..])?; | ||
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Ok(()) | ||
} | ||
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fn print_usage(program: &str, opts: Options) { | ||
let brief = format!("Usage: {} [options] INPUT OUTPUT", program); | ||
print!("{}", opts.usage(&brief)); | ||
} | ||
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fn main() { | ||
let args: Vec<String> = env::args().collect(); | ||
let program = args[0].clone(); | ||
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let mut opts = Options::new(); | ||
opts.optflag("h", "help", "print this help menu"); | ||
opts.optopt("t", "link-type", "set link type (one of: ethernet ip)", "TYPE"); | ||
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let matches = match opts.parse(&args[1..]) { | ||
Ok(m) => m, | ||
Err(e) => { | ||
eprintln!("{}", e); | ||
return | ||
} | ||
}; | ||
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let link_type = | ||
match matches.opt_str("t").as_ref().map(|s| &s[..]) { | ||
Some("ethernet") => Some(PcapLinkType::Ethernet), | ||
Some("ip") => Some(PcapLinkType::Ip), | ||
_ => None | ||
}; | ||
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if matches.opt_present("h") || matches.free.len() != 2 || link_type.is_none() { | ||
print_usage(&program, opts); | ||
return | ||
} | ||
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match convert(Path::new(&matches.free[0]), | ||
Path::new(&matches.free[1]), | ||
link_type.unwrap()) { | ||
Ok(()) => (), | ||
Err(e) => { | ||
eprintln!("Cannot convert packet to pcap: {}", e); | ||
exit(1); | ||
} | ||
} | ||
} |