Authentication, better performance, better error handling

This commit is contained in:
Michael Pfaff 2023-06-06 20:07:10 -04:00
parent 96b1a94a4a
commit e3d610e9ad
Signed by: michael
GPG Key ID: CF402C4A012AA9D4
5 changed files with 1150 additions and 237 deletions

415
Cargo.lock generated
View File

@ -2,12 +2,41 @@
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dependencies = [
"winapi",
]
[[package]]
name = "winapi-x86_64-pc-windows-gnu"
version = "0.4.0"

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@ -7,14 +7,20 @@ edition = "2021"
[dependencies]
anyhow = "1.0.71"
bytes = "1.4.0"
flume = "0.10.14"
libc = "0.2.145"
nix = "0.26.2"
pam-client = { version = "0.5.0", path = "../../../../../Users/michael/b/rust-pam-client", default-features = false, features = ["serde"] }
pin-project-lite = "0.2.9"
quinn = "0.10.1"
rcgen = "0.10.0"
rmp-serde = "1.1.1"
rpassword = "7.2.0"
rustls = { version = "0.21.1", default-features = false }
serde = { version = "1.0.163", features = ["derive"] }
#termion = "2.0.1"
tokio = { version = "1.28.2", default-features = false, features = ["rt-multi-thread", "macros", "process", "io-util", "io-std", "time", "fs", "signal"] }
tracing = "0.1.37"
tracing-subscriber = { version = "0.3.17", features = ["env-filter"] }
triggered = "0.1.2"

8
README.md Normal file
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@ -0,0 +1,8 @@
## Resources
Some resources used in the development of the program.
- https://www.linuxquestions.org/questions/programming-9/how-to-set-pseudo-terminal-non-blocking-690846/
- https://meli.delivery/posts/2019-10-25-making-a-quick-and-dirty-terminal-emulator.html
- https://viewsourcecode.org/snaptoken/kilo/02.enteringRawMode.html
- https://www.digitalocean.com/community/tutorials/understanding-the-ssh-encryption-and-connection-process

File diff suppressed because it is too large Load Diff

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@ -9,9 +9,8 @@ use libc::{STDERR_FILENO, STDIN_FILENO, STDOUT_FILENO, TIOCSCTTY};
use libc::TIOCSWINSZ;
use std::ffi::CStr;
use std::fs::File;
use std::os::unix::process::CommandExt;
use std::os::fd::AsRawFd;
use std::path::Path;
use std::process::{Command, Stdio};
use std::os::unix::io::{FromRawFd, IntoRawFd};
@ -23,15 +22,23 @@ ioctl_none_bad!(set_controlling_terminal, TIOCSCTTY);
pub struct Child {
pub pty: tokio::fs::File,
pub pid: Pid,
pub proc: Proc,
}
impl Child {
pub fn set_nodelay(&mut self) -> nix::Result<()> {
fcntl(self.pty.as_raw_fd(), FcntlArg::F_SETFL(OFlag::O_NDELAY)).map(|_|())
}
}
pub struct Proc(pub Pid);
impl Proc {
// copied from
// https://doc.rust-lang.org/nightly/src/std/sys/unix/process/process_unix.rs.html#744-757
pub fn try_wait(&self) -> std::io::Result<Option<i32>> {
let mut status = 0;
let pid = cvt(unsafe { libc::waitpid(self.pid.as_raw(), &mut status, libc::WNOHANG) })?;
let pid = cvt(unsafe { libc::waitpid(self.0.as_raw(), &mut status, libc::WNOHANG) })?;
if pid == 0 {
Ok(None)
} else {
@ -40,9 +47,9 @@ impl Child {
}
}
impl Drop for Child {
impl Drop for Proc {
fn drop(&mut self) {
_ = nix::sys::signal::kill(self.pid, nix::sys::signal::Signal::SIGTERM);
_ = nix::sys::signal::kill(self.0, nix::sys::signal::Signal::SIGTERM);
}
}
@ -60,7 +67,7 @@ pub fn create_pty<S: AsRef<CStr> + std::fmt::Debug>(path: &CStr, argv: &[S]) ->
/* Try to open the slave */
let _slave_fd = open(Path::new(&slave_name), OFlag::O_RDWR, Mode::empty())?;
info!("master opened the slave_fd!");
trace!("master opened the slave_fd!");
/* Launch our child process. The main application loop can inspect and then
pass the stdin data to it. */
@ -82,11 +89,10 @@ pub fn create_pty<S: AsRef<CStr> + std::fmt::Debug>(path: &CStr, argv: &[S]) ->
let master_fd = master_fd.into_raw_fd();
/* Tell the master the size of the terminal */
unsafe { set_window_size(master_fd, &winsize)? };
fcntl(master_fd, FcntlArg::F_SETFL(OFlag::O_NDELAY)).unwrap();
let master_file = unsafe { File::from_raw_fd(master_fd) };
Ok(Child {
pty: master_file.into(),
pid: child_pid,
proc: Proc(child_pid),
})
}
@ -97,7 +103,8 @@ fn init_child<S: AsRef<CStr> + std::fmt::Debug>(
) -> anyhow::Result<std::convert::Infallible> {
/* Open slave end for pseudoterminal */
let slave_fd = open(Path::new(&slave_name), OFlag::O_RDWR, Mode::empty())?;
info!("child opened the slave_fd!");
trace!("child opened the slave_fd!");
debug!("we are going to execute: {:?} {:?}", path, argv);
// assign stdin, stdout, stderr to the tty
nix::unistd::dup2(slave_fd, STDIN_FILENO)?;
@ -107,7 +114,7 @@ fn init_child<S: AsRef<CStr> + std::fmt::Debug>(
nix::unistd::setsid().unwrap();
unsafe { set_controlling_terminal(slave_fd) }.unwrap();
info!("running exec: {:?} {:?}", path, argv);
trace!("running exec");
Ok(nix::unistd::execv(path, argv)?)
}