Is there a guide on how to start and configure the config.json when installed via snap?

[cizz0r]

I just can't get it to working using this .service file I created.

[Unit]
Description=Shadowsocks-Libev Custom Server Service for %I
Documentation=manss-server(1)
After=network-online.target

[Service]
Type=simple
ExecStart=/usr/bin/snap run shadowsocks-rust.ss-server -c /var/snap/shadowsocks-rust/common/etc/shadowsocks-rust/config.json

[Install]
WantedBy=multi-user.target

[cizz0r]

And where can I modify the normal systemd file so that it doesn't overwrite? I'd like to add my config parameter permanently.

[zonyitoo]

Not sure. If you finally find the answer, please help to improve the README.md.

[zonyitoo]

shadowsocks-rust/snap/snapcraft.yaml

Lines 39 to 42 in 08f350f

	passthrough:
	layout:
	/etc/shadowsocks-rust:
	bind: $SNAP_COMMON/etc/shadowsocks-rust

As you can see in the snapcraft.yaml, it passthroughs $SNAP_COMMON/etc/shadowsocks-rust to /etc/shadowsocks-rust.

https://snapcraft.io/docs/environment-variables

According to document, $SNAP_COMMON is: SNAP_COMMON=/var/snap/<snap>/common, which in this case, /var/snap/shadowsocks-rust/common.

So you could put the configuration file to /var/snap/shadowsocks-rust/common/etc/shadowsocks-rust/config.json.

Here is the default search path:

shadowsocks-rust/src/config.rs

Lines 16 to 69 in 08f350f

	/// Default configuration file path
	pub fn get_default_config_path() -> Option<PathBuf> {
	// config.json in the current working directory ($PWD)
	if let Ok(mut path) = env::current_dir() {
	path.push("config.json");
	if path.exists() {
	return Some(path);
	}
	} else {
	// config.json in the current working directory (relative path)
	let relative_path = PathBuf::from("config.json");
	if relative_path.exists() {
	return Some(relative_path);
	}
	}
	// System standard directories
	if let Some(project_dirs) = ProjectDirs::from("org", "shadowsocks", "shadowsocks-rust") {
	// Linux: $XDG_CONFIG_HOME/shadowsocks-rust/config.json
	// $HOME/.config/shadowsocks-rust/config.json
	// macOS: $HOME/Library/Application Support/org.shadowsocks.shadowsocks-rust/config.json
	// Windows: {FOLDERID_RoamingAppData}/shadowsocks/shadowsocks-rust/config/config.json
	let mut config_path = project_dirs.config_dir().to_path_buf();
	config_path.push("config.json");
	if config_path.exists() {
	return Some(config_path);
	}
	}
	// UNIX systems, XDG Base Directory
	// https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
	#[cfg(unix)]
	if let Ok(base_directories) = xdg::BaseDirectories::with_prefix("shadowsocks-rust") {
	// $XDG_CONFIG_HOME/shadowsocks-rust/config.json
	// for dir in $XDG_CONFIG_DIRS; $dir/shadowsocks-rust/config.json
	if let Some(config_path) = base_directories.find_config_file("config.json") {
	return Some(config_path);
	}
	}
	// UNIX global configuration file
	#[cfg(unix)]
	{
	let global_config_path = Path::new("/etc/shadowsocks-rust/config.json");
	if global_config_path.exists() {
	return Some(global_config_path.to_path_buf());
	}
	}
	None
	}