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fix(client): safe Unicode truncation via trunc(), fixes panic on non-ASCII chars

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Helios Agent 2026-03-03 16:35:20 +01:00
parent 1823b6021a
commit 27b1ffc55b
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GPG key ID: C8259547CD8309B5
1 changed files with 15 additions and 12 deletions
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27
crates/client/src/main.rs
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@ -20,6 +20,17 @@ mod windows_mgmt;
// ─── CLI Output ─────────────────────────────────────────────────────────────
/// Truncate a string to at most `max_chars` Unicode characters.
fn trunc(s: &str, max_chars: usize) -> String {
let mut chars = s.chars();
let truncated: String = chars.by_ref().take(max_chars).collect();
if chars.next().is_some() {
format!("{}…", truncated)
} else {
truncated
}
}
fn banner() {
println!();
println!(" {} HELIOS REMOTE v{} ({})", "☀".yellow().bold(), env!("CARGO_PKG_VERSION"), env!("GIT_COMMIT"));
@ -365,7 +376,7 @@ async fn handle_message(
let _title = title.unwrap_or_else(|| "Helios Remote".to_string());
#[cfg(windows)]
let title = _title.clone();
log_cmd!("💬", "prompt › {}", &message[..message.len().min(60)]);
log_cmd!("💬", "prompt › {}", trunc(&message, 60));
#[cfg(windows)]
{
use windows::core::PCWSTR;
@ -384,7 +395,7 @@ async fn handle_message(
);
}
}).await.ok();
log_ok!("User confirmed: {}", &msg_clone[..msg_clone.len().min(40)]);
log_ok!("User confirmed: {}", trunc(&msg_clone, 40));
}
#[cfg(not(windows))]
{
@ -395,21 +406,13 @@ async fn handle_message(
}
ServerMessage::ExecRequest { request_id, command, timeout_ms } => {
let cmd_display = if command.len() > 60 {
format!("{}…", &command[..60])
} else {
command.clone()
};
let cmd_display = trunc(&command, 60);
log_cmd!("⚡", "exec › {}", cmd_display);
let mut sh = shell.lock().await;
match sh.run(&command, timeout_ms).await {
Ok((stdout, stderr, exit_code)) => {
let out = stdout.trim().lines().next().unwrap_or("").to_string();
let out_display = if out.len() > 60 {
format!("{}…", &out[..60])
} else {
out
};
let out_display = trunc(&out, 60);
if exit_code != 0 {
if out_display.is_empty() {
log_err!("exit {}", exit_code);