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CH-J / Server Manager 1704 فائلیں
0.1.2-beta شامل کیا گیا: · بلڈ کیا گیا:
daemon.rs شامل کیا گیا: تاریخ درج نہیں 8.7 KB · 214 لائنیں
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1//! Background process. One blocking accept loop on a Unix socket inside the user's data folder (folder 0700,
2//! socket 0600), plus small KeySync and availability-monitor threads; no WebView or async runtime.
3//! Requests are one JSON line `{"action":"verify|sign|ping|stop","path":"/abs/file"}`; the answer is one line.
4//! Windows holds an exclusive file lock and polls a stop file; its menu entries start the application
5//! directly (no verify/sign IPC, see `main.rs`).
6use std::path::Path;
8pub const SOCKET: &str = "standby-helper.sock";
10#[cfg(unix)]
11mod imp {
12 use super::SOCKET;
13 use serde_json::{json, Value};
14 use std::io::{BufRead, BufReader, Read, Write};
15 use std::os::unix::net::{UnixListener, UnixStream};
16 use std::path::Path;
17 use std::time::Duration;
19 /// `<data>/standby-helper.sock`, or, when that is longer than a Unix socket path may be (104 bytes on macOS),
20 /// a per-user runtime folder (`XDG_RUNTIME_DIR`, macOS per-user `TMPDIR`) with a name derived from the data path.
21 pub fn socket_path(data: &Path) -> std::path::PathBuf {
22 let direct = data.join(SOCKET);
23 if direct.as_os_str().len() < 100 {
24 return direct;
25 }
26 let hash = data.to_string_lossy().bytes().fold(0xcbf2_9ce4_8422_2325u64, |h, b| (h ^ b as u64).wrapping_mul(0x100_0000_01b3));
27 let base = std::env::var_os("XDG_RUNTIME_DIR").or_else(|| std::env::var_os("TMPDIR")).map(std::path::PathBuf::from).filter(|p| p.is_absolute()).unwrap_or_else(|| data.to_path_buf());
28 base.join(format!("chj-standby-{hash:016x}.sock"))
29 }
31 fn exchange(data: &Path, request: &Value) -> Option<String> {
32 let mut stream = UnixStream::connect(socket_path(data)).ok()?;
33 stream.set_read_timeout(Some(Duration::from_secs(3))).ok()?;
34 stream.set_write_timeout(Some(Duration::from_secs(3))).ok()?;
35 writeln!(stream, "{request}").ok()?;
36 let mut line = String::new();
37 BufReader::new(stream).read_line(&mut line).ok()?;
38 Some(line.trim().to_string())
39 }
41 pub fn ping(data: &Path) -> bool {
42 exchange(data, &json!({"action":"ping"})).as_deref() == Some("pong")
43 }
45 pub fn request(data: &Path, action: &str, file: &Path) -> bool {
46 exchange(data, &json!({"action": action, "path": file.to_string_lossy()})).as_deref() == Some("ok")
47 }
49 /// Returns once the daemon has exited (its lock is free) or after 3 s: callers such as the application's move of
50 /// the data folder rely on no helper thread still using the old paths.
51 pub fn stop(data: &Path) {
52 if exchange(data, &json!({"action":"stop"})).is_none() {
53 return;
54 }
55 let deadline = std::time::Instant::now() + Duration::from_secs(3);
56 while crate::lockfile::held_by_other(data) && std::time::Instant::now() < deadline {
57 std::thread::sleep(Duration::from_millis(50));
58 }
59 }
61 fn handle(stream: UnixStream) -> bool {
62 let _ = stream.set_read_timeout(Some(Duration::from_secs(2)));
63 let mut line = String::new();
64 // At most 16 KiB per request.
65 if BufReader::new((&stream).take(16 * 1024)).read_line(&mut line).is_err() {
66 return true;
67 }
68 let request: Value = serde_json::from_str(line.trim()).unwrap_or(Value::Null);
69 let mut out = &stream;
70 let answer = match request["action"].as_str() {
71 Some("ping") => "pong",
72 Some("stop") => {
73 let _ = writeln!(out, "bye");
74 return false;
75 }
76 Some(action @ ("verify" | "sign")) => match request["path"].as_str().filter(|p| Path::new(p).is_absolute()).and_then(crate::checked_file) {
77 Some(file) if crate::launch_quick(action, &file).is_ok() => "ok",
78 _ => "error",
79 },
80 _ => "error",
81 };
82 let _ = writeln!(out, "{answer}");
83 true
84 }
86 pub fn run(data: &Path) -> i32 {
87 let settings = crate::settings::load(data);
88 if !settings.enabled {
89 return 0;
90 }
91 // One instance for the process lifetime: only the lock owner may replace or remove the socket (two
92 // concurrent starts used to unlink each other's live socket and both kept monitoring).
93 let _lock = match crate::lockfile::acquire(data) {
94 Ok(Some(lock)) => lock,
95 Ok(None) => return 0, // already running
96 Err(_) => return 1,
97 };
98 // Keep the system entries pointing at the installed binaries (e.g. after an update moved them).
99 let _ = crate::integration::apply(&crate::settings::Context::new(data), &settings);
100 let path = socket_path(data);
101 let _ = std::fs::remove_file(&path);
102 let listener = match UnixListener::bind(&path) {
103 Ok(listener) => listener,
104 Err(_) => return 1,
105 };
106 {
107 use std::os::unix::fs::PermissionsExt;
108 let _ = std::fs::set_permissions(&path, std::fs::Permissions::from_mode(0o600));
109 }
110 // KeySync while the application is closed: a pass only does work when jobs are due and Core does
111 // not hold the processing lock; otherwise it is one small file read every 90 s.
112 let sync_data = data.to_path_buf();
113 let _ = std::thread::Builder::new().name("keysync".into()).spawn(move || {
114 std::thread::sleep(Duration::from_secs(20)); // let the network come up after login
115 loop {
116 let _ = crate::keysync::pass(&sync_data);
117 std::thread::sleep(crate::keysync::PASS_INTERVAL);
118 }
119 });
120 let monitor_data = data.to_path_buf();
121 let _ = std::thread::Builder::new().name("monitor".into()).stack_size(128 * 1024).spawn(move || {
122 crate::monitor::run_loop(&monitor_data);
123 });
124 for stream in listener.incoming() {
125 match stream {
126 Ok(stream) => {
127 if !handle(stream) {
128 break;
129 }
130 }
131 Err(_) => std::thread::sleep(Duration::from_millis(200)),
132 }
133 }
134 let _ = std::fs::remove_file(&path);
135 0
136 }
139#[cfg(not(unix))]
140mod imp {
141 use crate::lockfile;
142 use std::path::Path;
143 use std::time::{Duration, Instant};
145 pub fn ping(data: &Path) -> bool {
146 lockfile::held_by_other(data)
147 }
148 pub fn request(_: &Path, _: &str, _: &Path) -> bool {
149 false
150 }
151 pub fn stop(data: &Path) {
152 if lockfile::request_stop(data).is_err() {
153 return;
154 }
155 let deadline = Instant::now() + Duration::from_secs(3);
156 while ping(data) || lockfile::held_by_other(data) {
157 let remaining = deadline.saturating_duration_since(Instant::now());
158 if remaining.is_zero() {
159 break;
160 }
161 std::thread::sleep(remaining.min(Duration::from_millis(50)));
162 }
163 }
164 pub fn run(data: &Path) -> i32 {
165 let settings = crate::settings::load(data);
166 if !settings.enabled {
167 return 0;
168 }
169 // A stop file from before this start is stale; clearing it before taking the lock means a stop request
170 // sent after the lock is held is never lost.
171 if lockfile::clear_stale_stop(data).is_err() {
172 return 1;
173 }
174 let _lock = match lockfile::acquire(data) {
175 Ok(Some(lock)) => lock,
176 Ok(None) => return 0, // already running
177 Err(_) => return 1,
178 };
179 let _ = crate::integration::apply(&crate::settings::Context::new(data), &settings);
180 let sync_data = data.to_path_buf();
181 // Default stack like on unix: the TLS handshake (rustls) needs more than a small stack.
182 let _ = std::thread::Builder::new().name("keysync".into()).spawn(move || {
183 std::thread::sleep(Duration::from_secs(20)); // let the network come up after login
184 loop {
185 let _ = crate::keysync::pass(&sync_data);
186 std::thread::sleep(crate::keysync::PASS_INTERVAL);
187 }
188 });
189 let monitor_data = data.to_path_buf();
190 let _ = std::thread::Builder::new().name("monitor".into()).stack_size(128 * 1024).spawn(move || {
191 crate::monitor::run_loop(&monitor_data);
192 });
193 loop {
194 std::thread::sleep(Duration::from_secs(1));
195 if lockfile::take_stop_request(data) {
196 break;
197 }
198 }
199 0
200 }
203pub fn ping(data: &Path) -> bool {
204 imp::ping(data)
206pub fn request(data: &Path, action: &str, file: &Path) -> bool {
207 imp::request(data, action, file)
209pub fn stop(data: &Path) {
210 imp::stop(data)
212pub fn run(data: &Path) -> i32 {
213 imp::run(data)
SHA-256a9e7bcfcba053327a2dd590db2e64039e60d06077d46a4d0e2f3e4af11baafcd

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