| 1 | use std::time::Duration; |
| 2 | |
| 3 | use termbridge::paths; |
| 4 | use termbridge::pty::Profile; |
| 5 | use termbridge::{Config, Event, Server}; |
| 6 | |
| 7 | use termbridge::DEFAULT_PORT; |
| 8 | |
| 9 | fn usage() -> ! { |
| 10 | eprintln!( |
| 11 | "termbridge — loopback WebSocket bridge (security spike) |
| 12 | |
| 13 | USAGE: |
| 14 | termbridge serve [--port N] [--session NAME] |
| 15 | start the daemon |
| 16 | termbridge serve --systemd-socket [--idle-timeout SECS] |
| 17 | serve on the socket systemd passed us |
| 18 | termbridge install [--port N] [--idle-timeout SECS] [--session NAME] |
| 19 | start the daemon on demand, from now on |
| 20 | termbridge uninstall stop doing that |
| 21 | termbridge reload restart the running daemon (after a rebuild) |
| 22 | termbridge token print the auth token (paste into extension) |
| 23 | termbridge token --rotate generate a new token |
| 24 | termbridge pair <origin> approve an extension origin |
| 25 | termbridge unpair <origin> revoke an origin |
| 26 | termbridge list show paired origins |
| 27 | termbridge cert show the TLS certificate path + fingerprint |
| 28 | termbridge cert --regenerate make a new certificate |
| 29 | termbridge hooks print the Claude Code hook settings to install |
| 30 | termbridge hook record one hook event (reads JSON on stdin) |
| 31 | termbridge tmux print the tmux.conf line for the status glyph |
| 32 | |
| 33 | Origins look like: |
| 34 | chrome-extension://abcdefghijklmnopabcdefghijklmnop |
| 35 | moz-extension://11111111-2222-3333-4444-555555555555 |
| 36 | " |
| 37 | ); |
| 38 | std::process::exit(2) |
| 39 | } |
| 40 | |
| 41 | #[tokio::main] |
| 42 | async fn main() -> Result<(), Box<dyn std::error::Error>> { |
| 43 | let args: Vec<String> = std::env::args().skip(1).collect(); |
| 44 | let dir = paths::config_dir(); |
| 45 | let flag = |name: &str| { |
| 46 | args.iter() |
| 47 | .position(|a| a == name) |
| 48 | .and_then(|i| args.get(i + 1)) |
| 49 | .cloned() |
| 50 | }; |
| 51 | |
| 52 | match args.first().map(String::as_str) { |
| 53 | Some("serve") => { |
| 54 | let port = flag("--port") |
| 55 | .and_then(|p| p.parse().ok()) |
| 56 | .unwrap_or(DEFAULT_PORT); |
| 57 | let session = flag("--session"); |
| 58 | // 0 disables it, so a unit file can turn the timeout off without |
| 59 | // being rewritten into a different shape. |
| 60 | let idle = flag("--idle-timeout") |
| 61 | .and_then(|s| s.parse::<u64>().ok()) |
| 62 | .filter(|s| *s > 0) |
| 63 | .map(Duration::from_secs); |
| 64 | let listener = if args.iter().any(|a| a == "--systemd-socket") { |
| 65 | match termbridge::activation::systemd_listener()? { |
| 66 | Some(l) => Some(l), |
| 67 | None => { |
| 68 | eprintln!( |
| 69 | "--systemd-socket was passed but no socket arrived. Start this \ |
| 70 | through termbridge.socket (see `termbridge install`), not directly." |
| 71 | ); |
| 72 | std::process::exit(2); |
| 73 | } |
| 74 | } |
| 75 | } else { |
| 76 | None |
| 77 | }; |
| 78 | serve(port, session, idle, listener).await |
| 79 | } |
| 80 | Some("install") => { |
| 81 | let opts = termbridge::install::Options { |
| 82 | port: flag("--port") |
| 83 | .and_then(|p| p.parse().ok()) |
| 84 | .unwrap_or(DEFAULT_PORT), |
| 85 | idle_secs: flag("--idle-timeout") |
| 86 | .and_then(|s| s.parse().ok()) |
| 87 | .unwrap_or(termbridge::install::Options::default().idle_secs), |
| 88 | session: flag("--session"), |
| 89 | }; |
| 90 | termbridge::install::install(&opts)?; |
| 91 | Ok(()) |
| 92 | } |
| 93 | Some("uninstall") => { |
| 94 | termbridge::install::uninstall()?; |
| 95 | Ok(()) |
| 96 | } |
| 97 | // Deliberately takes no flags. Everything `install` accepts is written |
| 98 | // into the unit file, and a reload that quietly rewrote it would be an |
| 99 | // install under another name. |
| 100 | Some("reload") => { |
| 101 | termbridge::install::reload()?; |
| 102 | Ok(()) |
| 103 | } |
| 104 | Some("token") => { |
| 105 | let token = if args.iter().any(|a| a == "--rotate") { |
| 106 | paths::generate_token(&dir)? |
| 107 | } else { |
| 108 | paths::load_or_create_token(&dir)? |
| 109 | }; |
| 110 | println!("{token}"); |
| 111 | println!("\n(from {})", paths::token_path().display()); |
| 112 | Ok(()) |
| 113 | } |
| 114 | Some("pair") => { |
| 115 | let origin = args.get(1).unwrap_or_else(|| usage()); |
| 116 | if paths::pair_origin(&dir, origin)? { |
| 117 | println!("paired: {origin}"); |
| 118 | } else { |
| 119 | println!("already paired: {origin}"); |
| 120 | } |
| 121 | Ok(()) |
| 122 | } |
| 123 | Some("unpair") => { |
| 124 | let origin = args.get(1).unwrap_or_else(|| usage()); |
| 125 | if paths::unpair_origin(&dir, origin)? { |
| 126 | println!("unpaired: {origin}"); |
| 127 | } else { |
| 128 | println!("not paired: {origin}"); |
| 129 | } |
| 130 | Ok(()) |
| 131 | } |
| 132 | Some("cert") => { |
| 133 | let id = if args.iter().any(|a| a == "--regenerate") { |
| 134 | termbridge::tls::generate(&dir)? |
| 135 | } else { |
| 136 | termbridge::tls::load_or_create(&dir)? |
| 137 | }; |
| 138 | println!( |
| 139 | "certificate: {}", |
| 140 | dir.join(termbridge::tls::CERT_FILE).display() |
| 141 | ); |
| 142 | println!( |
| 143 | "private key: {}", |
| 144 | dir.join(termbridge::tls::KEY_FILE).display() |
| 145 | ); |
| 146 | println!("SHA-256: {}", id.fingerprint); |
| 147 | Ok(()) |
| 148 | } |
| 149 | // Runs on every hook event, so it must be quiet and must never fail in |
| 150 | // a way Claude would surface. Any error here is a status panel that is |
| 151 | // briefly stale, which is not worth interrupting the user's session. |
| 152 | Some("hook") => { |
| 153 | let mut input = String::new(); |
| 154 | use std::io::Read; |
| 155 | let _ = std::io::stdin().read_to_string(&mut input); |
| 156 | if let Ok(event) = serde_json::from_str::<serde_json::Value>(&input) { |
| 157 | let _ = termbridge::agents::apply(&event); |
| 158 | // After the record is on disk, so the status line is computed |
| 159 | // from the same state the sidebar will read. Runs even when |
| 160 | // the event removed the record: that is what clears the glyph |
| 161 | // from a window whose Claude has gone. |
| 162 | termbridge::window_status::publish(); |
| 163 | } |
| 164 | Ok(()) |
| 165 | } |
| 166 | Some("hooks") => { |
| 167 | let exe = std::env::current_exe() |
| 168 | .map(|p| p.display().to_string()) |
| 169 | .unwrap_or_else(|_| "termbridge".into()); |
| 170 | println!( |
| 171 | "Add this to ~/.claude/settings.json (merge with any hooks you already have):\n" |
| 172 | ); |
| 173 | println!("{}", termbridge::agents::hook_settings(&exe)); |
| 174 | println!( |
| 175 | "\nRecords are written to {}\n\ |
| 176 | Claude sessions then show up in the sidebar with their state and permission mode.", |
| 177 | termbridge::agents::dir().display() |
| 178 | ); |
| 179 | Ok(()) |
| 180 | } |
| 181 | Some("tmux") => { |
| 182 | println!("Add this to ~/.tmux.conf, then `tmux source-file ~/.tmux.conf`:\n"); |
| 183 | print!("{}", termbridge::window_status::tmux_conf()); |
| 184 | println!( |
| 185 | "\nThe hooks are what set it, so install those first if you haven't:\n\ |
| 186 | \x20 termbridge hooks" |
| 187 | ); |
| 188 | Ok(()) |
| 189 | } |
| 190 | Some("list") => { |
| 191 | let origins = paths::load_paired_origins(&dir); |
| 192 | if origins.is_empty() { |
| 193 | println!( |
| 194 | "no paired origins ({})", |
| 195 | paths::paired_origins_path().display() |
| 196 | ); |
| 197 | } else { |
| 198 | for o in origins { |
| 199 | println!("{o}"); |
| 200 | } |
| 201 | } |
| 202 | Ok(()) |
| 203 | } |
| 204 | _ => usage(), |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | async fn serve( |
| 209 | port: u16, |
| 210 | session: Option<String>, |
| 211 | idle_timeout: Option<Duration>, |
| 212 | activated: Option<std::net::TcpListener>, |
| 213 | ) -> Result<(), Box<dyn std::error::Error>> { |
| 214 | let dir = paths::config_dir(); |
| 215 | let token = paths::load_or_create_token(&dir)?; |
| 216 | let paired = paths::load_paired_origins(&dir); |
| 217 | |
| 218 | let identity = termbridge::tls::load_or_create(&dir)?; |
| 219 | let mut config = Config::new(token, paired.clone()); |
| 220 | config.auth_timeout = Duration::from_secs(3); |
| 221 | config.idle_timeout = idle_timeout; |
| 222 | config.tls = Some(termbridge::tls::acceptor(&identity)?); |
| 223 | let pinned = session |
| 224 | .as_deref() |
| 225 | .and_then(termbridge::pty::valid_session_name); |
| 226 | let default_session = pinned |
| 227 | .clone() |
| 228 | .unwrap_or_else(|| termbridge::pty::DEFAULT_SESSION.to_string()); |
| 229 | config.default_session = default_session.clone(); |
| 230 | // A pinned --session is a choice; without one, a lone existing session is |
| 231 | // a better guess than a fresh "default" beside it. |
| 232 | config.adopt_sole_session = pinned.is_none(); |
| 233 | config.profile = if Profile::tmux_available() { |
| 234 | Profile::tmux(&default_session) |
| 235 | } else { |
| 236 | eprintln!("warning: tmux not found on PATH — falling back to a plain shell."); |
| 237 | eprintln!(" Sessions will NOT survive closing the sidebar."); |
| 238 | Profile::shell_fallback() |
| 239 | }; |
| 240 | let profile = config.profile.clone(); |
| 241 | let config_adopts_sole = config.adopt_sole_session && profile.program == "tmux"; |
| 242 | |
| 243 | let mut server = match activated { |
| 244 | Some(listener) => Server::from_std(config, listener)?, |
| 245 | None => Server::start(config, port).await?, |
| 246 | }; |
| 247 | println!( |
| 248 | "termbridge listening on wss://{a} (ws:// also accepted on the same port)", |
| 249 | a = server.addr() |
| 250 | ); |
| 251 | println!("running: {} {}", profile.program, profile.args.join(" ")); |
| 252 | let existing = termbridge::pty::list_sessions(&profile.tmux_global_args()); |
| 253 | if !existing.is_empty() { |
| 254 | println!("tmux sessions available: {}", existing.join(", ")); |
| 255 | } |
| 256 | if config_adopts_sole { |
| 257 | match existing.as_slice() { |
| 258 | [only] => println!("joining the only existing session: {only}"), |
| 259 | _ => println!("new clients start in session: {default_session}"), |
| 260 | } |
| 261 | } |
| 262 | println!("token: {}", paths::token_path().display()); |
| 263 | println!("cert: SHA-256 {}", identity.fingerprint); |
| 264 | println!( |
| 265 | "\nFirst time only — the certificate is self-signed, so trust it once:\n\ |
| 266 | \n open https://{a}/ and accept the warning\n", |
| 267 | a = server.addr() |
| 268 | ); |
| 269 | if paired.is_empty() { |
| 270 | println!( |
| 271 | "\nNo origins paired yet — every connection will be refused.\n\ |
| 272 | Load the extension, copy its origin from the sidebar, then run:\n\ |
| 273 | \n termbridge pair <origin>\n" |
| 274 | ); |
| 275 | } else { |
| 276 | println!("paired origins: {}", paired.join(", ")); |
| 277 | } |
| 278 | |
| 279 | while let Some(event) = server.next_event().await { |
| 280 | match event { |
| 281 | Event::Accepted { origin } => println!("[accept] {origin}"), |
| 282 | // Under socket activation this is the normal way to stop: the |
| 283 | // socket unit keeps listening, so the next sidebar connection |
| 284 | // starts a fresh daemon and tmux hands it back the same sessions. |
| 285 | Event::Idle => { |
| 286 | println!( |
| 287 | "[idle] no clients for {:?} — exiting", |
| 288 | idle_timeout.unwrap_or_default() |
| 289 | ); |
| 290 | break; |
| 291 | } |
| 292 | Event::Rejected { |
| 293 | origin, |
| 294 | why, |
| 295 | detail, |
| 296 | } => { |
| 297 | let o = origin.unwrap_or_else(|| "<none>".into()); |
| 298 | println!("[reject] {o}: {}", why.reason()); |
| 299 | if let Some(d) = detail { |
| 300 | println!(" cause: {d}"); |
| 301 | } |
| 302 | match why { |
| 303 | termbridge::auth::Denied::UnpairedOrigin => { |
| 304 | println!(" to approve: termbridge pair {o}"); |
| 305 | } |
| 306 | // By far the most common first-run mistake: the extension |
| 307 | // was loaded but nobody ever pasted a token into it. The |
| 308 | // wire-level reason ("invalid token") does not say where |
| 309 | // the right token comes from, so spell it out. |
| 310 | termbridge::auth::Denied::BadToken |
| 311 | | termbridge::auth::Denied::MalformedAuth |
| 312 | | termbridge::auth::Denied::AuthTimeout => { |
| 313 | println!( |
| 314 | " the extension did not present the token in {}", |
| 315 | paths::token_path().display() |
| 316 | ); |
| 317 | println!( |
| 318 | " to fix: run termbridge token and paste the 64 hex chars\n\ |
| 319 | \x20 into the sidebar's settings → Token field" |
| 320 | ); |
| 321 | } |
| 322 | _ => {} |
| 323 | } |
| 324 | } |
| 325 | } |
| 326 | } |
| 327 | Ok(()) |
| 328 | } |