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use std::sync::Arc;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::mpsc;
use crossterm::event::KeyEvent;
use crate::app::{App, Screen};
use crate::event::AppEvent;
pub(super) fn handle_confirm_delete(app: &mut App, key: KeyEvent) {
// Use the central confirm-key router so the y/n/Esc contract is uniform
// across all confirm dialogs.
match super::route_confirm_key(key) {
super::ConfirmAction::Yes => {
if let Screen::ConfirmDelete { ref alias } = app.screen {
let alias = alias.clone();
let siblings = app.hosts_state.ssh_config.siblings_of(&alias);
if !siblings.is_empty() {
// Multi-alias block: strip only the selected token.
// `delete_host_undoable` refuses this case (returning
// None) because re-inserting the whole element via
// `insert_host_at` cannot reverse a token strip. We
// therefore skip the undo stack and surface the event
// via a dedicated toast that names the surviving
// siblings, so the user knows what did and did not
// change on disk.
app.hosts_state.ssh_config.delete_host(&alias);
if let Err(e) = app.hosts_state.ssh_config.write() {
// Disk write failed: reload from disk to discard
// the in-memory strip so view and storage match.
app.notify_error(crate::messages::failed_to_save(&e));
app.reload_hosts();
} else {
if let Some(mut tunnel) = app.tunnels.active.remove(&alias) {
let _ = tunnel.child.kill();
let _ = tunnel.child.wait();
}
app.update_last_modified();
app.reload_hosts();
app.notify(crate::messages::siblings_stripped(&alias, siblings.len()));
}
} else if let Some((element, position)) =
app.hosts_state.ssh_config.delete_host_undoable(&alias)
{
if let Err(e) = app.hosts_state.ssh_config.write() {
// Restore the element on write failure
app.hosts_state.ssh_config.insert_host_at(element, position);
app.notify_error(crate::messages::failed_to_save(&e));
} else {
// Stop active tunnel for the deleted host
if let Some(mut tunnel) = app.tunnels.active.remove(&alias) {
let _ = tunnel.child.kill();
let _ = tunnel.child.wait();
}
// Clean up cert file if it exists. NotFound is the
// expected case for hosts that never had a cert. Other
// errors are surfaced via the status bar (never via
// eprintln, which would corrupt the ratatui screen).
let mut cert_cleanup_warning: Option<String> = None;
if !crate::demo_flag::is_demo() {
if let Ok(cert_path) = crate::vault_ssh::cert_path_for(&alias) {
match std::fs::remove_file(&cert_path) {
Ok(()) => {}
Err(e) if e.kind() == std::io::ErrorKind::NotFound => {}
Err(e) => {
cert_cleanup_warning =
Some(crate::messages::cert_cleanup_warning(
&cert_path.display(),
&e,
));
}
}
}
}
app.hosts_state
.undo_stack
.push(crate::app::DeletedHost { element, position });
if app.hosts_state.undo_stack.len() > 50 {
app.hosts_state.undo_stack.remove(0);
}
app.update_last_modified();
app.reload_hosts();
if let Some(warning) = cert_cleanup_warning {
app.notify_error(warning);
} else {
app.notify(crate::messages::goodbye_host(&alias));
}
}
} else {
app.notify_warning(crate::messages::host_not_found(&alias));
}
}
app.set_screen(Screen::HostList);
}
super::ConfirmAction::No => {
app.set_screen(Screen::HostList);
}
super::ConfirmAction::Ignored => {}
}
}
pub(super) fn handle_confirm_vault_sign(
app: &mut App,
key: KeyEvent,
events_tx: &mpsc::Sender<AppEvent>,
) {
// Vault Sign is a destructive/material action: signing N certificates
// hits Vault, may take time and is hard to reverse. Stray keys must NOT
// cancel — use `route_confirm_key` so only y/Y/n/N/Esc are honored.
// History: an earlier `_ => app.screen = Screen::HostList` catch-all
// could be triggered by any keypress next to `y` (e.g. fat-fingered
// `t` or `u`), silently aborting a bulk sign.
match super::route_confirm_key(key) {
super::ConfirmAction::Yes => {
// Extract the precomputed signable list, then transition back to
// the host list and kick off the background signing loop.
let signable = if let Screen::ConfirmVaultSign { signable } = &app.screen {
signable.clone()
} else {
return;
};
app.set_screen(Screen::HostList);
start_vault_bulk_sign(app, signable, events_tx);
}
super::ConfirmAction::No => {
app.set_screen(Screen::HostList);
}
super::ConfirmAction::Ignored => {}
}
}
/// Start the background vault bulk sign loop with fast-fail, progress, TOCTOU
/// coordination and cancellation. Stores the JoinHandle on App for clean exit.
fn start_vault_bulk_sign(
app: &mut App,
signable: Vec<(String, String, String, std::path::PathBuf, Option<String>)>,
events_tx: &mpsc::Sender<AppEvent>,
) {
let total = signable.len();
if total == 0 {
return;
}
app.notify_progress(crate::messages::vault_signing_progress(
crate::animation::SPINNER_FRAMES[0],
0,
total,
"",
));
let cancel = Arc::new(AtomicBool::new(false));
app.vault.signing_cancel = Some(cancel.clone());
let in_flight = app.vault.sign_in_flight.clone();
let tx = events_tx.clone();
let spawn_result = std::thread::Builder::new()
.name("vault-bulk-sign".into())
.spawn(move || {
let mut signed = 0u32;
let mut failed = 0u32;
let mut skipped = 0u32;
let mut consecutive_failures = 0usize;
let mut first_error: Option<String> = None;
let mut aborted_message: Option<String> = None;
for (idx, (alias, role, cert_file, pubkey, vault_addr)) in signable.iter().enumerate() {
if cancel.load(Ordering::Relaxed) {
break;
}
let done = idx + 1;
// TOCTOU: skip host if another thread already has it in-flight.
// Otherwise mark it in-flight for the duration of this iteration.
{
// If the mutex is poisoned a worker thread panicked while holding
// the lock. Recover the inner value without clearing — clearing
// the whole set would make every in-flight alias simultaneously
// eligible for re-signing, risking duplicate cert writes.
let mut set = match in_flight.lock() {
Ok(g) => g,
Err(p) => p.into_inner(),
};
if !set.insert(alias.clone()) {
skipped += 1;
let _ = tx.send(AppEvent::VaultSignProgress {
alias: alias.clone(),
done,
total,
});
continue;
}
}
let _ = tx.send(AppEvent::VaultSignProgress {
alias: alias.clone(),
done,
total,
});
let cert_path = match crate::vault_ssh::resolve_cert_path(alias, cert_file) {
Ok(p) => p,
Err(e) => {
failed += 1;
consecutive_failures += 1;
let scrubbed = crate::vault_ssh::scrub_vault_stderr(&e.to_string());
if first_error.is_none() {
first_error = Some(scrubbed);
}
remove_in_flight(&in_flight, alias);
if consecutive_failures >= 3 {
aborted_message = Some(crate::messages::vault_signing_aborted(
failed,
first_error.as_deref(),
));
break;
}
continue;
}
};
let status = crate::vault_ssh::check_cert_validity(&cert_path);
if !crate::vault_ssh::needs_renewal(&status) {
skipped += 1;
consecutive_failures = 0;
remove_in_flight(&in_flight, alias);
continue;
}
let sign_result =
crate::vault_ssh::sign_certificate(role, pubkey, alias, vault_addr.as_deref());
// Always clean up in_flight for this alias before handling the
// result. Using a single cleanup point (rather than per-arm)
// prevents orphaned aliases when new control flow is added.
remove_in_flight(&in_flight, alias);
match sign_result {
Ok(_) => {
let _ = tx.send(AppEvent::VaultSignResult {
alias: alias.clone(),
certificate_file: cert_file.clone(),
success: true,
message: String::new(),
});
signed += 1;
consecutive_failures = 0;
}
Err(e) => {
let raw = e.to_string();
let scrubbed = crate::vault_ssh::scrub_vault_stderr(&raw);
if first_error.is_none() {
first_error = Some(scrubbed.clone());
}
let _ = tx.send(AppEvent::VaultSignResult {
alias: alias.clone(),
certificate_file: cert_file.clone(),
success: false,
message: scrubbed,
});
failed += 1;
consecutive_failures += 1;
if consecutive_failures >= 3 {
aborted_message = Some(crate::messages::vault_signing_aborted(
failed,
first_error.as_deref(),
));
break;
}
}
}
}
let cancelled = cancel.load(Ordering::Relaxed);
let _ = tx.send(AppEvent::VaultSignAllDone {
signed,
failed,
skipped,
cancelled,
aborted_message,
first_error,
});
});
match spawn_result {
Ok(handle) => {
app.vault.sign_thread = Some(handle);
}
Err(e) => {
// Spawn failed (e.g. OS thread limit). Clear the cancel flag and
// surface the error — otherwise the status bar is stuck at
// "Signing 0/N" with no way for the user to recover.
app.vault.signing_cancel = None;
app.vault.sign_thread = None;
app.notify_error(crate::messages::vault_spawn_failed(&e));
}
}
}
pub(super) fn remove_in_flight(
set: &std::sync::Arc<std::sync::Mutex<std::collections::HashSet<String>>>,
alias: &str,
) {
// On mutex poison, recover the inner value and remove only the target alias.
// Do NOT clear the entire set — other in-flight aliases are still owned by
// live worker iterations and clearing them would allow duplicate signs.
let mut guard = match set.lock() {
Ok(g) => g,
Err(p) => p.into_inner(),
};
guard.remove(alias);
}
pub(super) fn handle_confirm_host_key_reset(app: &mut App, key: KeyEvent) {
// Host key reset wipes the host's known_hosts entry — uniform y/n/Esc
// contract via the central router so stray keys cannot trigger it.
match super::route_confirm_key(key) {
super::ConfirmAction::Yes => {
if let Screen::ConfirmHostKeyReset {
ref alias,
ref hostname,
ref known_hosts_path,
ref askpass,
} = app.screen
{
let alias = alias.clone();
let hostname = hostname.clone();
let known_hosts_path = known_hosts_path.clone();
let askpass = askpass.clone();
let output = std::process::Command::new("ssh-keygen")
.arg("-R")
.arg(&hostname)
.arg("-f")
.arg(&known_hosts_path)
.output();
match output {
Ok(result) if result.status.success() => {
app.notify(crate::messages::removed_host_key(&hostname));
if app.demo_mode {
app.notify(crate::messages::DEMO_CONNECTION_DISABLED);
} else {
app.pending_connect = Some((alias, askpass));
}
}
Ok(result) => {
let stderr = String::from_utf8_lossy(&result.stderr);
app.notify_error(crate::messages::host_key_remove_failed(stderr.trim()));
}
Err(e) => {
app.notify_error(crate::messages::ssh_keygen_failed(&e));
}
}
}
app.set_screen(Screen::HostList);
}
super::ConfirmAction::No => {
app.set_screen(Screen::HostList);
}
super::ConfirmAction::Ignored => {}
}
}