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use super::common;
use std::io::Write;
use std::string::String;
use std::str::{self, FromStr};
use std::env;
use std::net;
use std::io;
use std::process;
use std::error::Error;
use std::process::exit;
use std::process::Command;
use getopts::Options;
use udt::{self, UdtSocket};
use udt_extras::{UdtStream};
use crypto::{SecretStream, key2string, string2key, nonce2string, string2nonce};
use sodiumoxide::crypto::secretbox;
pub fn run_client(host: &str, local_file: &str, remote_file: &str, remote_is_dir: bool, is_recv: bool, no_crypto: bool, verbose: bool) -> Result<(), String> {
if verbose {
println!("local details:");
println!("\thost: {}", host);
println!("\tlocal_file: {}", local_file);
println!("\tremote_file: {}", remote_file);
println!("\tis_recv: {}", is_recv);
};
let mut ssh_cmd = Command::new("ssh");
ssh_cmd.arg(host)
.arg("-4")
.arg("--")
.arg("ucp")
.arg("server")
.arg(if is_recv {"-f"} else {"-t"})
.arg(remote_file);
if remote_is_dir {
ssh_cmd.arg("-d");
}
if no_crypto {
ssh_cmd.arg("--no-crypto");
}
let ssh_output = ssh_cmd.output().expect("couldn't get SSH sub-process output");
if !ssh_output.status.success() {
return Err(format!("Error on remote end: {}",
String::from_utf8_lossy(&ssh_output.stderr)));
}
let reply = String::from_utf8_lossy(&ssh_output.stdout);
//println!("SSH reply: {}", reply);
let words: Vec<&str> = reply.split_whitespace().collect();
if words.len() != 7 || words[0] != "UCP" || words[1] != "CONNECT" {
return Err("Unexpected data via SSH pipe (TCP)".to_string());
}
let remote_host = words[2];
let remote_port = words[3].parse::<u16>().expect("failed to parse remote port number");
let remote_secret = words[4];
let remote_read_nonce = words[5];
let remote_write_nonce = words[6];
if verbose {
println!("Got remote details:");
println!("\tport: {}", remote_port);
println!("\thost: {}", remote_host);
println!("\tsecret key: {}", remote_secret);
println!("\tsecret read nonce: {}", remote_read_nonce);
println!("\tsecret write nonce: {}", remote_write_nonce);
};
let addr = net::IpAddr::from_str(remote_host).unwrap();
let mut socket = UdtSocket::new(udt::SocketFamily::AFInet, udt::SocketType::Stream).unwrap();
println!("Connecting to: {}:{}", addr, remote_port);
match socket.connect(net::SocketAddr::new(addr, remote_port)) {
Ok(_) => { println!("Connected."); },
Err(e) => { return Err(e.err_msg); },
};
let mut stream: UdtStream = UdtStream::new(socket);
println!("opened socket");
let io_result: io::Result<()>;
if !no_crypto {
let mut stream = SecretStream::new(stream);
stream.key = string2key(remote_secret).unwrap();
stream.read_nonce = string2nonce(remote_write_nonce).unwrap();
stream.write_nonce = string2nonce(remote_read_nonce).unwrap();
if is_recv {
io_result = common::sink_files(&mut stream, local_file, remote_is_dir);
} else {
io_result = common::source_files(&mut stream, local_file, remote_is_dir);
}
} else {
if is_recv {
io_result = common::sink_files(&mut stream, local_file, remote_is_dir);
} else {
io_result = common::source_files(&mut stream, local_file, remote_is_dir);
}
}
match io_result {
Ok(_) => Ok(()),
Err(e) => Err(e.description().to_string()),
}
}
fn usage_client(opts: Options) {
let brief = "usage:\tucp client ..."; // XXX:
println!("");
println!("IMPORTANT: this is the client mode of ucp. Unless you are developing/debugging, you probably want the 'regular' one (from the 'client' from you command)");
print!("{}", opts.usage(&brief));
}
pub fn main_client() {
let args: Vec<String> = env::args().collect();
let mut opts = Options::new();
opts.optflag("h", "help", "print this help menu");
//opts.optflag("v", "verbose", "more debugging messages");
opts.optflag("d", "dir-mode", "read/write a dir instead of file (client side)");
opts.optopt("f", "from", "file or dir to read from (client side)", "FILE");
opts.optopt("t", "to", "file or dir to write to (client side)", "FILE");
opts.reqopt("", "host", "remote hostname to connect to", "HOSTNAME");
opts.reqopt("", "port", "remote port to connect to", "PORT");
opts.optopt("", "read-nonce", "secret read nonce", "NONCE");
opts.optopt("", "write-nonce", "secret write nonce", "NONCE");
opts.optopt("", "key", "secret key", "NONCE");
opts.optflag("", "no-crypto", "sends data in the clear (no crypto or verification)");
assert!(args.len() >= 2 && args[1] == "client");
let matches = match opts.parse(&args[2..]) {
Ok(m) => { m }
Err(f) => { println!("{}", f.to_string()); usage_client(opts); exit(-1); }
};
if matches.opt_present("h") {
usage_client(opts);
return;
}
//let verbose: bool = matches.opt_present("v");
let dir_mode: bool = matches.opt_present("d");
let no_crypto: bool = matches.opt_present("no-crypto");
if !no_crypto {
if !matches.opt_present("key") ||
!matches.opt_present("read-nonce") ||
!matches.opt_present("write-nonce") {
println!("If not --no-crypto, --key and --read-nonce and --write-nonce are required.");
usage_client(opts);
exit(-1);
}
}
match (matches.opt_present("f"), matches.opt_present("t")) {
(true, true) | (false, false) => {
println!("Must be either 'from' or 'to', but not both");
exit(-1);
},
_ => {},
}
let remote_host = matches.opt_str("host").unwrap();
let remote_port = matches.opt_str("port").unwrap().parse::<u16>().unwrap();
let addr = net::IpAddr::from_str(&remote_host).unwrap();
let mut socket = UdtSocket::new(udt::SocketFamily::AFInet, udt::SocketType::Stream).unwrap();
println!("Connecting to: {}:{}", addr, remote_port);
socket.connect(net::SocketAddr::new(addr, remote_port)).unwrap();;
let mut stream: UdtStream = UdtStream::new(socket);
let mut ret: io::Result<()>;
if !no_crypto {
let mut stream = SecretStream::new(stream);
stream.key = string2key(&matches.opt_str("key").unwrap()).unwrap();
stream.read_nonce = string2nonce(&matches.opt_str("read-nonce").unwrap()).unwrap();
stream.write_nonce = string2nonce(&matches.opt_str("write-nonce").unwrap()).unwrap();
if matches.opt_present("f") {
ret = common::source_files(&mut stream, &matches.opt_str("f").unwrap(), dir_mode);
} else if matches.opt_present("t") {
ret = common::sink_files(&mut stream, &matches.opt_str("t").unwrap(), dir_mode);
} else {
unreachable!();
}
} else {
if matches.opt_present("f") {
ret = common::source_files(&mut stream, &matches.opt_str("f").unwrap(), dir_mode);
} else if matches.opt_present("t") {
ret = common::sink_files(&mut stream, &matches.opt_str("t").unwrap(), dir_mode);
} else {
unreachable!();
}
}
match ret {
Ok(_) => { exit(0); },
Err(err) => {
writeln!(&mut ::std::io::stderr(), "{}", err.description()).unwrap();
exit(-1);
}
}
}
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