krata: fix console restoration

Cargo.toml

@@ -27,6 +27,8 @@ backhand = "0.14.2"
 byteorder = "1"
 bytes = "1.5.0"
 cli-tables = "0.2.1"
+crossterm = "0.27.0"
+ctrlc = "3.4.4"
 directories = "5.0.1"
 elf = "0.7.4"
 env_logger = "0.11.0"

crates/kratactl/Cargo.toml

@@ -9,19 +9,19 @@ anyhow = { workspace = true }
 async-stream = { workspace = true }
 clap = { workspace = true }
 cli-tables = { workspace = true }
+crossterm = { workspace = true }
+ctrlc = { workspace = true, features = ["termination"] }
 env_logger = { workspace = true }
 krata = { path = "../krata" }
 log = { workspace = true }
 serde = { workspace = true }
+signal-hook = { workspace = true }
 tokio = { workspace = true }
 tokio-stream = { workspace = true }
 tonic = { workspace = true }
 tower = { workspace = true }
 url = { workspace = true }
 
-[target.'cfg(unix)'.dependencies]
-termion = { workspace = true }
-
 [lib]
 name = "kratactl"
 

crates/kratactl/src/cli/console.rs

@@ -32,6 +32,7 @@ impl ConsoleCommand {
             },
             x = exit_hook_task => x?
         };
+        StdioConsoleStream::restore_terminal_mode();
         std::process::exit(code.unwrap_or(0));
     }
 }

crates/kratactl/src/cli/launch.rs

@@ -71,6 +71,7 @@ impl LauchCommand {
             println!("created guest: {}", id);
             None
         };
+        StdioConsoleStream::restore_terminal_mode();
         std::process::exit(code.unwrap_or(0));
     }
 }

crates/kratactl/src/console.rs

@@ -1,18 +1,16 @@
 use anyhow::Result;
 use async_stream::stream;
+use crossterm::{
+    terminal::{disable_raw_mode, enable_raw_mode, is_raw_mode_enabled},
+    tty::IsTty,
+};
 use krata::{
     common::GuestStatus,
     control::{watch_events_reply::Event, ConsoleDataReply, ConsoleDataRequest},
 };
 use log::debug;
-#[cfg(unix)]
-use std::os::fd::{AsRawFd, FromRawFd};
-#[cfg(unix)]
-use termion::raw::IntoRawMode;
-#[cfg(unix)]
-use tokio::fs::File;
 use tokio::{
-    io::{stdin, AsyncReadExt, AsyncWriteExt},
+    io::{stdin, stdout, AsyncReadExt, AsyncWriteExt},
     task::JoinHandle,
 };
 use tokio_stream::{Stream, StreamExt};
@@ -47,14 +45,11 @@ impl StdioConsoleStream {
     }
 
     pub async fn stdout(mut stream: Streaming<ConsoleDataReply>) -> Result<()> {
-        #[cfg(unix)]
-        let terminal = std::io::stdout().into_raw_mode()?;
-        #[cfg(unix)]
-        let mut stdout =
-            unsafe { File::from_std(std::fs::File::from_raw_fd(terminal.as_raw_fd())) };
-        #[cfg(not(unix))]
-        let mut stdout = tokio::io::stdout();
-
+        if stdin().is_tty() {
+            enable_raw_mode()?;
+            StdioConsoleStream::register_terminal_restore_hook()?;
+        }
+        let mut stdout = stdout();
         while let Some(reply) = stream.next().await {
             let reply = reply?;
             if reply.data.is_empty() {
@@ -101,4 +96,19 @@ impl StdioConsoleStream {
             None
         }))
     }
+
+    fn register_terminal_restore_hook() -> Result<()> {
+        if stdin().is_tty() {
+            ctrlc::set_handler(move || {
+                StdioConsoleStream::restore_terminal_mode();
+            })?;
+        }
+        Ok(())
+    }
+
+    pub fn restore_terminal_mode() {
+        if is_raw_mode_enabled().unwrap_or(false) {
+            let _ = disable_raw_mode();
+        }
+    }
 }