feat: Fix the problem caused by the daemon process discarding permissions

Author: 0x676e67

src/asset/libc.rs

@@ -9,7 +9,7 @@ struct Asset;
 struct Asset;
 
 #[cfg(target_os = "linux")]
-pub(crate) fn ld_env(envs: &mut std::collections::HashMap<String, String>) -> anyhow::Result<()> {
+pub(crate) fn ld_env(envs: &mut std::collections::HashMap<String, String>) -> Result<()> {
     use crate::{constant, util};
     use anyhow::Context;
     use std::ops::Not;

src/asset/thunder.rs

@@ -1,3 +1,5 @@
+use anyhow::Context;
+use anyhow::Result;
 use core::str;
 use std::{
     borrow::Cow,
@@ -6,8 +8,6 @@ use std::{
     ops::Not,
     path::{Path, PathBuf},
 };
-
-use anyhow::Context;
 use tar::Archive;
 
 pub struct Asset {
@@ -31,7 +31,7 @@ impl Asset {
         })
     }
 
-    pub fn init(&self) -> anyhow::Result<()> {
+    pub fn init(&self) -> Result<()> {
         match self.package {
             Some(ref filepath) => {
                 // check filepath is exists
@@ -90,7 +90,7 @@ impl Asset {
         }
     }
 
-    fn decompressor<T: AsRef<Path>>(dir: T, archive_path: T) -> anyhow::Result<()> {
+    fn decompressor<T: AsRef<Path>>(dir: T, archive_path: T) -> Result<()> {
         const PACKAGE_XZ: &str = "package.tgz";
         const PACKAGE_TAR: &str = "package.tar";
 
@@ -158,7 +158,7 @@ impl Asset {
         Ok(())
     }
 
-    fn copy_write(mut src: impl Read, dest: &mut File) -> anyhow::Result<()> {
+    fn copy_write(mut src: impl Read, dest: &mut File) -> Result<()> {
         let mut buffer = [0; 1024];
 
         loop {

src/daemon.rs

@@ -1,3 +1,4 @@
+use anyhow::Result;
 use daemonize::Daemonize;
 use std::{
     fs::{File, Permissions},
@@ -22,7 +23,7 @@ pub fn check_root() {
 }
 
 /// Get the pid of the daemon
-pub(crate) fn get_pid() -> Option<String> {
+pub fn get_pid() -> Option<String> {
     if let Ok(data) = std::fs::read(PID_PATH) {
         let binding = String::from_utf8(data).expect("pid file is not utf8");
         return Some(binding.trim().to_string());
@@ -31,7 +32,7 @@ pub(crate) fn get_pid() -> Option<String> {
 }
 
 /// Start the daemon
-pub(super) fn start() -> anyhow::Result<()> {
+pub fn start() -> Result<()> {
     if let Some(pid) = get_pid() {
         println!("Thunder is already running with pid: {}", pid);
         return Ok(());
@@ -73,7 +74,7 @@ pub(super) fn start() -> anyhow::Result<()> {
 }
 
 /// Stop the daemon
-pub(super) fn stop() -> anyhow::Result<()> {
+pub fn stop() -> Result<()> {
     use nix::sys::signal;
     use nix::unistd::Pid;
 
@@ -94,7 +95,7 @@ pub(super) fn stop() -> anyhow::Result<()> {
 }
 
 /// Show the status of the daemon
-pub(super) fn status() -> anyhow::Result<()> {
+pub fn status() -> Result<()> {
     match get_pid() {
         Some(pid) => println!("Thunder is running with pid: {}", pid),
         None => println!("Thunder is not running"),
@@ -103,8 +104,8 @@ pub(super) fn status() -> anyhow::Result<()> {
 }
 
 /// Show the log of the daemon
-pub(super) fn log() -> anyhow::Result<()> {
-    fn read_and_print_file(file_path: &Path, placeholder: &str) -> anyhow::Result<()> {
+pub fn log() -> Result<()> {
+    fn read_and_print_file(file_path: &Path, placeholder: &str) -> Result<()> {
         if !file_path.exists() {
             return Ok(());
         }

src/install.rs

@@ -2,20 +2,20 @@ use std::ops::Not;
 use std::path::Path;
 use std::path::PathBuf;
 
-use anyhow::Context;
-use rand::Rng;
-
 use crate::asset::thunder::Asset;
 use crate::constant;
 use crate::util;
 use crate::InstallConfig;
 use crate::Running;
+use anyhow::Context;
+use anyhow::Result;
+use rand::Rng;
 
 /// Install xunlei
 pub struct XunleiInstall(pub InstallConfig);
 
 impl Running for XunleiInstall {
-    fn run(self) -> anyhow::Result<()> {
+    fn run(self) -> Result<()> {
         // If the package is already installed, skip the installation
         if Path::new(constant::SYNOPKG_VAR).exists() {
             println!("Thunder already installed");
@@ -66,13 +66,21 @@ impl Running for XunleiInstall {
         let target_dir = PathBuf::from(constant::SYNOPKG_PKGDEST);
         // /var/packages/pan-xunlei-com/target/host
         let host_dir = PathBuf::from(constant::SYNOPKG_HOST);
+        // If Synology NAS is not installed, the backend service will not be started
+        let var_path = Path::new(constant::SYNOPKG_VAR);
 
         // uid and gid
         let uid = self.0.uid;
         let gid = self.0.gid;
 
         util::create_dir_all(&target_dir, 0o755)?;
 
+        // path: /var/packages/pan-xunlei-com/target/var
+        if !var_path.exists() {
+            util::create_dir_all(var_path, 0o777)?;
+            util::chown(var_path, uid, gid)?;
+        }
+
         // download xunlei binary
         let xunlei = Asset::new(self.0.package)?;
         xunlei.init()?;
@@ -175,7 +183,7 @@ impl Running for XunleiInstall {
 pub struct XunleiUninstall(pub Option<InstallConfig>);
 
 impl Running for XunleiUninstall {
-    fn run(self) -> anyhow::Result<()> {
+    fn run(self) -> Result<()> {
         // path: /var/packages/pan-xunlei-com
         let path = Path::new(constant::SYNOPKG_PKGBASE);
         if path.exists() {

src/main.rs

@@ -9,13 +9,14 @@ mod install;
 mod serve;
 pub mod util;
 
+use anyhow::Result;
 use clap::{Args, Parser, Subcommand};
 use std::io::{BufRead, Write};
 use std::net::SocketAddr;
 use std::path::{Path, PathBuf};
 
 pub trait Running {
-    fn run(self) -> anyhow::Result<()>;
+    fn run(self) -> Result<()>;
 }
 
 #[derive(Parser)]
@@ -69,7 +70,7 @@ impl InstallConfig {
     const PATH: &'static str = "/etc/.thunder";
 
     /// Remove config file
-    pub fn remove_file(self) -> anyhow::Result<()> {
+    pub fn remove_file(self) -> Result<()> {
         let path = Path::new(Self::PATH);
         if path.exists() {
             std::fs::remove_file(&Self::PATH)?;
@@ -78,7 +79,7 @@ impl InstallConfig {
     }
 
     /// Write to file
-    fn write_to_file(&self) -> anyhow::Result<()> {
+    fn write_to_file(&self) -> Result<()> {
         let path = Path::new(Self::PATH);
         if !path.exists() {
             let mut file = std::fs::File::create(path)?;
@@ -175,7 +176,7 @@ pub struct ServeConfig {
     tls_key: Option<PathBuf>,
 }
 
-fn main() -> anyhow::Result<()> {
+fn main() -> Result<()> {
     let opt = Opt::parse();
 
     match opt.commands {
@@ -187,12 +188,16 @@ fn main() -> anyhow::Result<()> {
             let install_config = InstallConfig::read_from_file().map_or(None, |v| Some(v));
             install::XunleiUninstall(install_config).run()?;
         }
-        Commands::Run(config) => {
-            serve::Serve::new(config, InstallConfig::read_from_file()?).run()?;
+        Commands::Run(server_config) => {
+            let install_config = InstallConfig::read_from_file()?;
+            before_action(&install_config)?;
+            serve::Serve::new(server_config, install_config).run()?;
         }
-        Commands::Start(config) => {
+        Commands::Start(server_config) => {
+            let install_config = InstallConfig::read_from_file()?;
+            before_action(&install_config)?;
             daemon::start()?;
-            serve::Serve::new(config, InstallConfig::read_from_file()?).run()?;
+            serve::Serve::new(server_config, install_config).run()?;
         }
         Commands::Stop => {
             daemon::stop()?;
@@ -206,3 +211,29 @@ fn main() -> anyhow::Result<()> {
     }
     Ok(())
 }
+
+/// Running before the daemon starts, execute the following code
+fn before_action(install_config: &InstallConfig) -> Result<()> {
+    #[cfg(target_os = "linux")]
+    use nix::mount::MsFlags;
+
+    #[cfg(target_os = "linux")]
+    let _ = nix::mount::umount(&install_config.mount_bind_download_path);
+    #[cfg(target_os = "linux")]
+    if nix::mount::mount(
+        Some(&install_config.download_path),
+        &install_config.mount_bind_download_path,
+        <Option<&'static [u8]>>::None,
+        MsFlags::MS_BIND,
+        <Option<&'static [u8]>>::None,
+    )
+    .is_err()
+    {
+        anyhow::bail!(
+            "Mount {} to {} failed",
+            install_config.download_path.display(),
+            install_config.mount_bind_download_path.display()
+        );
+    }
+    Ok(())
+}

src/serve/auth/token.rs

@@ -1,8 +1,8 @@
+use super::{CHECK_AUTH, EXP, TOKEN_SECRET};
+use anyhow::Result;
 use jsonwebtokens::{encode, Algorithm, AlgorithmID, Verifier};
 use std::{collections::HashMap, time::Duration};
 
-use super::{CHECK_AUTH, EXP, TOKEN_SECRET};
-
 fn get_or_init_secret() -> &'static String {
     TOKEN_SECRET.get_or_init(|| {
         let secret = if let Some(Some(auth_password)) = CHECK_AUTH.get() {
@@ -27,7 +27,7 @@ pub fn generate_token() -> anyhow::Result<String> {
     Ok(encode(&header, &claims, &alg)?)
 }
 
-pub fn verifier(token_str: &str) -> anyhow::Result<()> {
+pub fn verifier(token_str: &str) -> Result<()> {
     let s = get_or_init_secret();
     let alg = Algorithm::new_hmac(AlgorithmID::HS256, s.to_owned())?;
     let verifier = Verifier::create().build()?;

src/serve/backend.rs

@@ -1,14 +1,12 @@
-#[cfg(target_os = "linux")]
-use nix::mount::MsFlags;
+use crate::serve::ConfigExt;
+use crate::ServeConfig;
+use crate::{constant, InstallConfig, Running};
+use anyhow::Result;
 use nix::sys::signal;
 use nix::unistd::Pid;
 use signal_hook::iterator::Signals;
 use std::os::unix::process::CommandExt;
-
-use crate::serve::ConfigExt;
-use crate::{constant, InstallConfig, Running};
-use crate::{util, ServeConfig};
-use std::{ops::Not, path::Path, process::Stdio};
+use std::process::Stdio;
 
 pub(super) struct BackendServer(ServeConfig, InstallConfig, tokio::sync::mpsc::Sender<()>);
 
@@ -23,33 +21,7 @@ impl BackendServer {
 }
 
 impl Running for BackendServer {
-    fn run(self) -> anyhow::Result<()> {
-        // If Synology NAS is not installed, the backend service will not be started
-        let var_path = Path::new(constant::SYNOPKG_VAR);
-        if var_path.exists().not() {
-            util::create_dir_all(var_path, 0o777)?;
-            util::chown(var_path, self.1.uid, self.1.gid)?;
-        }
-
-        #[cfg(target_os = "linux")]
-        let _ = nix::mount::umount(&self.1.mount_bind_download_path);
-        #[cfg(target_os = "linux")]
-        if nix::mount::mount(
-            Some(&self.1.download_path),
-            &self.1.mount_bind_download_path,
-            <Option<&'static [u8]>>::None,
-            MsFlags::MS_BIND,
-            <Option<&'static [u8]>>::None,
-        )
-        .is_err()
-        {
-            anyhow::bail!(
-                "Mount {} to {} failed",
-                self.1.download_path.display(),
-                self.1.mount_bind_download_path.display()
-            );
-        }
-
+    fn run(self) -> Result<()> {
         // environment variables
         let envs = (&self.0, &self.1).envs()?;
 

src/serve/frontend.rs

@@ -6,6 +6,7 @@ use super::{
 };
 use crate::{constant, InstallConfig, Running, ServeConfig};
 use anyhow::Context;
+use anyhow::Result;
 use axum::{
     body::{Body, StreamBody},
     extract::State,
@@ -41,7 +42,7 @@ struct User {
 pub(super) struct FrontendServer(ServeConfig, InstallConfig, tokio::sync::mpsc::Receiver<()>);
 
 impl Running for FrontendServer {
-    fn run(self) -> anyhow::Result<()> {
+    fn run(self) -> Result<()> {
         self.start_server()
     }
 }
@@ -56,7 +57,7 @@ impl FrontendServer {
     }
 
     #[tokio::main]
-    async fn start_server(self) -> anyhow::Result<()> {
+    async fn start_server(self) -> Result<()> {
         log::info!("Starting frontend server: {}", self.0.bind);
 
         // Set check auth

src/serve/mod.rs

@@ -10,6 +10,7 @@ use crate::{
     serve::{backend::BackendServer, frontend::FrontendServer},
     InstallConfig, Running, ServeConfig,
 };
+use anyhow::Result;
 use std::collections::HashMap;
 
 pub(crate) trait ConfigExt {
@@ -25,7 +26,7 @@ impl Serve {
 }
 
 impl Running for Serve {
-    fn run(self) -> anyhow::Result<()> {
+    fn run(self) -> Result<()> {
         use std::thread::{Builder, JoinHandle};
 
         let serve_config = self.0.clone();