update: implement tor/arti, tls, basic metadata fetch

Cargo.toml

@@ -4,27 +4,41 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-dirs = "4.0.0"
+anyhow = "1.0.65"
+arti-client = "0.7.0"
+arti-hyper = "0.7.0"
+bytes = "1.2.1"
 chrono = "0.4.22"
+dirs = "4.0.0"
 eframe = "0.19.0"
 egui = "0.19.0"
 egui_extras = { version = "0.19.0", features = ["image"] }
 env_logger = "0.9.1"
 figment = { version = "0.10.8", features = ["toml"] }
+flate2 = "1.0"
 hex-literal = "0.3.4"
+hyper = "0.14.20"
+hyper-tls = "0.5.0"
 image = { version = "0.24.4", features = ["png"] }
 log = "0.4.17"
 monero = "0.18.0"
 num_cpus = "1.13.1"
 num-format = "0.4.0"
+openssl = { version = "*", features = ["vendored"] }
 rand = "0.8.5"
 regex = "1.6.0"
 reqwest = { version = "0.11.12", features = ["blocking", "json"] }
 serde = "1.0.145"
 serde_derive = "1.0.145"
+serde_json = "1.0"
 sha2 = "0.10.6"
+tar = "0.4.38"
+tls-api = "0.9.0"
+tls-api-native-tls = "0.9.0"
+tokio = { version = "1.21.2", features = ["full"] }
 toml = "0.5.9"
-openssl = { version = "*", features = ["vendored"] }
+tor-rtcompat = "0.7.0"
+walkdir = "2.3.2"
 
 [profile.optimized]
 codegen-units = 1

src/constants.rs

@@ -26,11 +26,6 @@ pub const P2POOL_BASE_ARGS: &'static str = "";
 pub const XMRIG_BASE_ARGS: &'static str = "--http-host=127.0.0.1 --http-port=18088 --algo=rx/0 --coin=Monero --randomx-cache-qos";
 pub const HORIZONTAL: &'static str = "--------------------------------------------";
 
-// Update data
-pub const GITHUB_METADATA_GUPAX: &'static str = "https://api.github.com/repos/hinto-janaiyo/gupax/releases/latest";
-pub const GITHUB_METADATA_P2POOL: &'static str = "https://api.github.com/repos/SChernykh/p2pool/releases/latest";
-pub const GITHUB_METADATA_XMRIG: &'static str = "https://api.github.com/repos/xmrig/xmrig/releases/latest";
-
 // OS specific
 #[cfg(target_os = "windows")]
 pub const OS: &'static str = " Windows";

src/gupax.rs

@@ -20,6 +20,7 @@ use crate::App;
 use egui::WidgetType::Button;
 use crate::constants::*;
 use crate::state::Gupax;
+use crate::update::*;
 
 impl Gupax {
 	pub fn show(state: &mut Gupax, ctx: &egui::Context, ui: &mut egui::Ui) {

src/main.rs

@@ -50,7 +50,8 @@ mod status;
 mod gupax;
 mod p2pool;
 mod xmrig;
-use {ferris::*,constants::*,node::*,state::*,about::*,status::*,gupax::*,p2pool::*,xmrig::*};
+mod update;
+use {ferris::*,constants::*,node::*,state::*,about::*,status::*,gupax::*,p2pool::*,xmrig::*,update::*};
 
 //---------------------------------------------------------------------------------------------------- Struct + Impl
 // The state of the outer main [App].
@@ -66,15 +67,11 @@ pub struct App {
 	node: Arc<Mutex<NodeStruct>>, // Data on community nodes
 	width: f32, // Top-level width
 	height: f32, // Top-level height
-	// State:
+	// State
-	// og    = Old state to compare against
+	og: State, // og    = Old state to compare against
-	// state = Working state (current settings)
+	state: State, // state = Working state (current settings)
-	// Instead of comparing [og == state] every frame,
+	update: Update, // State for update data [update.rs]
-	// the [diff] bool will be the signal for [Reset/Save].
+	diff: bool, // Instead of comparing [og == state] every frame, this bool indicates changes
-	og: State,
-	state: State,
-//	update: Update, // State for update data [update.rs]
-	diff: bool,
 	// Process/update state:
 	// Doesn't make sense to save this on disk
 	// so it's represented as a bool here.
@@ -105,6 +102,7 @@ impl App {
 	}
 
 	fn new() -> Self {
+		let throwaway = State::default();
 		let app = Self {
 			tab: Tab::default(),
 			quit: false,
@@ -116,7 +114,7 @@ impl App {
 			node: Arc::new(Mutex::new(NodeStruct::default())),
 			og: State::default(),
 			state: State::default(),
-//			update: Update::default(),
+			update: Update::new(&throwaway.gupax.absolute_p2pool_path, &throwaway.gupax.absolute_xmrig_path, true),
 			diff: false,
 			p2pool: false,
 			xmrig: false,
@@ -149,6 +147,7 @@ impl App {
 		app.og.xmrig.max_threads = num_cpus::get();
 		if app.og.xmrig.current_threads > app.og.xmrig.max_threads { app.og.xmrig.current_threads = app.og.xmrig.max_threads; }
 		app.state = app.og.clone();
+		app.update = Update::new(&app.og.gupax.absolute_p2pool_path, &app.og.gupax.absolute_xmrig_path, app.og.gupax.update_via_tor);
 		app
 	}
 }
@@ -273,14 +272,23 @@ fn parse_args(mut app: App) -> App {
 	app
 }
 
-fn get_exe_dir() -> Result<String, std::io::Error> {
+// Get absolute [Gupax] binary path
+pub fn get_exe() -> Result<String, std::io::Error> {
 	match std::env::current_exe() {
-		Ok(mut path) => { path.pop(); Ok(path.into_os_string().into_string().unwrap()) },
+		Ok(mut path) => { Ok(path.display().to_string()) },
 		Err(err) => { error!("Couldn't get exe basepath PATH"); return Err(err) },
 	}
 }
 
-fn get_rand_tmp(path: &String) -> String {
+// Get absolute [Gupax] directory path
+pub fn get_exe_dir() -> Result<String, std::io::Error> {
+	match std::env::current_exe() {
+		Ok(mut path) => { path.pop(); Ok(path.display().to_string()) },
+		Err(err) => { error!("Couldn't get exe basepath PATH"); return Err(err) },
+	}
+}
+
+pub fn get_rand_tmp(path: &String) -> String {
 	use rand::{thread_rng, Rng};
 	use rand::distributions::Alphanumeric;
     let rand: String = thread_rng()
@@ -361,6 +369,11 @@ impl eframe::App for App {
 	}
 
 	fn update(&mut self, ctx: &egui::Context, frame: &mut eframe::Frame) {
+		// *-------*
+		// | DEBUG |
+		// *-------*
+		self.update.start();
+		thread::sleep;
 		// This sets the top level Ui dimensions.
 		// Used as a reference for other uis.
 		egui::CentralPanel::default().show(ctx, |ui| { self.width = ui.available_width(); self.height = ui.available_height(); });

src/node.rs

@@ -103,7 +103,7 @@ impl NodeStruct {
 	// find the fastest/slowest one for the user.
 	// The process:
 	//   - Send [get_info] JSON-RPC requests over HTTP
-	//   - To prevent fingerprinting, randomly send [1-5] calls
+	//   - To prevent fingerprinting, randomly send [2-4] calls
 	//   - Measure each request in milliseconds as [u128]
 	//   - Timeout on requests over 5 seconds
 	//   - Calculate average time
@@ -121,16 +121,26 @@ impl NodeStruct {
 	// default = GRAY
 	pub fn ping() -> PingResult {
 		info!("Starting community node pings...");
+		// Get node list
 		let mut nodes = NodeStruct::default();
+
+		// Create JSON request
 		let mut get_info = HashMap::new();
 		get_info.insert("jsonrpc", "2.0");
 		get_info.insert("id", "0");
 		get_info.insert("method", "get_info");
+
+		// Misc Settings
 		let mut vec: Vec<(u128, NodeEnum)> = Vec::new();
-		let fastest = false;
+
+		// Create HTTP Client
 		let timeout_sec = Duration::from_millis(5000);
+		let client = reqwest::blocking::ClientBuilder::new();
+		let client = reqwest::blocking::ClientBuilder::timeout(client, timeout_sec);
+		let client = reqwest::blocking::ClientBuilder::build(client).unwrap();
 
 		for ip in NODE_IPS.iter() {
+			// Match IP
 			let id = match *ip {
 				C3POOL        => C3pool,
 				CAKE          => Cake,
@@ -143,27 +153,28 @@ impl NodeStruct {
 				SETH          => Seth,
 				SUPPORTXMR    => SupportXmr,
 				SUPPORTXMR_IR => SupportXmrIr,
-//				XMRVSBEAST    => XmrVsBeast,
 				_ => XmrVsBeast,
 			};
+			// Misc
 			let mut timeout = false;
 			let mut mid = Duration::new(0, 0);
-			let max = rand::thread_rng().gen_range(1..5);
+			let max = rand::thread_rng().gen_range(2..4);
+
+			// Start JSON-RPC request
 			for i in 1..=max {
-				let client = reqwest::blocking::ClientBuilder::new();
-				let client = reqwest::blocking::ClientBuilder::timeout(client, timeout_sec);
-				let client = reqwest::blocking::ClientBuilder::build(client).unwrap();
-				let http = "http://".to_owned() + &**ip + "/json_rpc";
 				let now = Instant::now();
+				let http = "http://".to_owned() + &**ip + "/json_rpc";
 				match client.post(http).json(&get_info).send() {
-					Ok(r) => mid += now.elapsed(),
+					Ok(_) => mid += now.elapsed(),
 					Err(err) => {
-						error!("Timeout on [{:#?}: {}] (over 5 seconds)", id, ip);
+						error!("Timeout on [{:#?}: {}] (over 5 seconds) | {}", id, ip, err);
 						mid += timeout_sec;
 						timeout = true;
 					},
 				};
 			}
+
+			// Calculate average
 			let ms = mid.as_millis() / 3;
 			vec.push((ms, id));
 			info!("{}ms ... {} calls ... {}", ms, max, ip);
@@ -192,6 +203,8 @@ impl NodeStruct {
 				XmrVsBeast   => { nodes.xmrvsbeast.ms = ms; nodes.xmrvsbeast.color = color; },
 			}
 		}
+
+		// Calculate fastest out of all nodes
 		let mut best_ms: u128 = vec[0].0;
 		let mut fastest: NodeEnum = vec[0].1;
 		for (ms, id) in vec.iter() {

src/state.rs

@@ -51,6 +51,7 @@ impl State {
 				auto_node: true,
 				ask_before_quit: true,
 				save_before_quit: true,
+				update_via_tor: true,
 				p2pool_path: DEFAULT_P2POOL_PATH.to_string(),
 				xmrig_path: DEFAULT_XMRIG_PATH.to_string(),
 				absolute_p2pool_path: Self::into_absolute_path(DEFAULT_P2POOL_PATH.to_string()).unwrap(),
@@ -300,6 +301,7 @@ pub struct Gupax {
 	pub auto_node: bool,
 	pub ask_before_quit: bool,
 	pub save_before_quit: bool,
+	pub update_via_tor: bool,
 	pub p2pool_path: String,
 	pub xmrig_path: String,
 	pub absolute_p2pool_path: PathBuf,

src/update.rs

@@ -14,54 +14,455 @@
 //// You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-use crate::State;
+//---------------------------------------------------------------------------------------------------- Imports
+use serde_derive::{Serialize,Deserialize};
+use tokio::task::JoinHandle;
+use std::time::Duration;
+use std::sync::{Arc,Mutex};
+use std::os::unix::fs::OpenOptionsExt;
+use std::io::{Read,Write};
+//use crate::{Name::*,State};
+use rand::{thread_rng, Rng};
+use rand::distributions::Alphanumeric;
+use anyhow::Error;
+use arti_hyper::*;
+use arti_client::{TorClient,TorClientConfig};
+use tokio::io::{AsyncReadExt,AsyncWriteExt};
+use tls_api::{TlsConnector, TlsConnectorBuilder};
+use hyper::header::HeaderValue;
+use hyper::{Client,Body,Request};
+use hyper_tls::HttpsConnector;
+use arti_hyper::*;
+use log::*;
+use crate::update::Name::*;
+use std::path::PathBuf;
 
-struct Update {
+// use tls_api_native_tls::{TlsConnector,TlsConnectorBuilder};
-	new_gupax: String,
+
-	new_p2pool: String,
+//---------------------------------------------------------------------------------------------------- Constants
-	new_xmrig: String,
+// Package naming schemes:
-	path_gupax: String,
+// gupax  | gupax-vX.X.X-(windows|macos|linux)-x64.(zip|tar.gz)
-	path_p2pool: String,
+// p2pool | p2pool-vX.X.X-(windows|macos|linux)-x64.(zip|tar.gz)
-	path_xmrig: String,
+// xmrig  | xmrig-X.X.X-(msvc-win64|macos-x64|linux-static-x64).(zip|tar.gz)
-	updating: Arc<Mutex<bool>> // Is the update in progress?
+//
-	update_prog: u8, // Not an [f32] because [Eq] doesn't work
+// Download link = PREFIX + Version (found at runtime) + SUFFIX + Version + EXT
+// Example: https://github.com/hinto-janaiyo/gupax/releases/download/v0.0.1/gupax-v0.0.1-linux-standalone-x64
+//
+// Exceptions (there are always exceptions...):
+//   - XMRig doesn't have a [v], so it is [xmrig-6.18.0-...]
+//   - XMRig separates the hash and signature
+//   - P2Pool hashes are in UPPERCASE
+//   - Gupax will be downloaded as a standalone binary (no decompression/extraction needed)
+
+const GUPAX_METADATA: &'static str = "https://api.github.com/repos/hinto-janaiyo/gupax/releases/latest";
+const P2POOL_METADATA: &'static str = "https://api.github.com/repos/SChernykh/p2pool/releases/latest";
+const XMRIG_METADATA: &'static str = "https://api.github.com/repos/xmrig/xmrig/releases/latest";
+
+const GUPAX_PREFIX: &'static str = "https://github.com/hinto-janaiyo/gupax/releases/download/";
+const P2POOL_PREFIX: &'static str = "https://github.com/SChernykh/p2pool/releases/download/";
+const XMRIG_PREFIX: &'static str = "https://github.com/xmrig/xmrig/releases/download/";
+
+const GUPAX_SUFFIX: &'static str = "/gupax-";
+const P2POOL_SUFFIX: &'static str = "/p2pool-";
+const XMRIG_SUFFIX: &'static str = "/xmrig-";
+
+const GUPAX_HASH: &'static str = "SHA256SUMS";
+const P2POOL_HASH: &'static str = "sha256sums.txt.asc";
+const XMRIG_HASH: &'static str = "SHA256SUMS";
+
+#[cfg(target_os = "windows")]
+const GUPAX_EXTENSION: &'static str = "-windows-standalone-x64.exe";
+#[cfg(target_os = "windows")]
+const P2POOL_EXTENSION: &'static str = "-windows-x64.zip";
+#[cfg(target_os = "windows")]
+const XMRIG_EXTENSION: &'static str = "-msvc-win64.zip";
+
+#[cfg(target_os = "macos")]
+const GUPAX_EXTENSION: &'static str = "-macos-standalone-x64";
+#[cfg(target_os = "macos")]
+const P2POOL_EXTENSION: &'static str = "-macos-x64.tar.gz";
+#[cfg(target_os = "macos")]
+const XMRIG_EXTENSION: &'static str = "-macos-x64.tar.gz";
+
+#[cfg(target_os = "linux")]
+const GUPAX_EXTENSION: &'static str = "-linux-standalone-x64";
+#[cfg(target_os = "linux")]
+const P2POOL_EXTENSION: &'static str = "-linux-x64.tar.gz";
+#[cfg(target_os = "linux")]
+const XMRIG_EXTENSION: &'static str = "-linux-static-x64.tar.gz";
+
+// Some fake Curl/Wget user-agents because GitHub API requires one and a Tor browser
+// user-agent might be fingerprintable without all the associated headers.
+const FAKE_USER_AGENT: [&'static str; 50] = [
+	"Wget/1.16.3",
+	"Wget/1.17",
+	"Wget/1.17.1",
+	"Wget/1.18",
+	"Wget/1.18",
+	"Wget/1.19",
+	"Wget/1.19.1",
+	"Wget/1.19.2",
+	"Wget/1.19.3",
+	"Wget/1.19.4",
+	"Wget/1.19.5",
+	"Wget/1.20",
+	"Wget/1.20.1",
+	"Wget/1.20.2",
+	"Wget/1.20.3",
+	"Wget/1.21",
+	"Wget/1.21.1",
+	"Wget/1.21.2",
+	"Wget/1.21.3",
+	"curl/7.64.1",
+	"curl/7.65.0",
+	"curl/7.65.1",
+	"curl/7.65.2",
+	"curl/7.65.3",
+	"curl/7.66.0",
+	"curl/7.67.0",
+	"curl/7.68.0",
+	"curl/7.69.0",
+	"curl/7.69.1",
+	"curl/7.70.0",
+	"curl/7.70.1",
+	"curl/7.71.0",
+	"curl/7.71.1",
+	"curl/7.72.0",
+	"curl/7.73.0",
+	"curl/7.74.0",
+	"curl/7.75.0",
+	"curl/7.76.0",
+	"curl/7.76.1",
+	"curl/7.77.0",
+	"curl/7.78.0",
+	"curl/7.79.0",
+	"curl/7.79.1",
+	"curl/7.80.0",
+	"curl/7.81.0",
+	"curl/7.82.0",
+	"curl/7.83.0",
+	"curl/7.83.1",
+	"curl/7.84.0",
+	"curl/7.85.0",
+];
+
+const MSG_START: &'static str = "Starting update...";
+const MSG_TMP: &'static str = "Creating temporary directory";
+const MSG_PKG: &'static str = "Creating package list";
+const MSG_TOR: &'static str = "Creating Tor+HTTPS client";
+const MSG_HTTPS: &'static str = "Creating HTTPS client";
+const MSG_METADATA: &'static str = "Fetching package metadata";
+const MSG_ARCHIVE: &'static str = "Downloading packages";
+
+// These two are sequential and not async so no need for a constant message.
+// The package in question will be known at runtime, so that will be printed.
+//const MSG_EXTRACT: &'static str = "Extracting packages";
+//const MSG_UPGRADE: &'static str = "Upgrading packages";
+
+//---------------------------------------------------------------------------------------------------- Update struct/impl
+// Contains values needed during update
+// Progress bar structure:
+// 5%  | Create tmp directory
+// 5%  | Create package list
+// 10% | Create Tor/HTTPS client
+// 20% | Download Metadata (x3)
+// 30% | Download Archive (x3)
+// 15% | Extract (x3)
+// 15% | Upgrade (x3)
+
+pub struct Update {
+	path_gupax: String, // Full path to current gupax
+	path_p2pool: String, // Full path to current p2pool
+	path_xmrig: String, // Full path to current xmrig
+	tmp_dir: String, // Full path to temporary directory
+	updating: Arc<Mutex<bool>>, // Is an update in progress?
+	prog: Arc<Mutex<u8>>, // Holds the 0-100% progress bar number
+	msg: Arc<Mutex<String>>, // Message to display on [Gupax] tab while updating
+	tor: bool, // Is Tor enabled or not?
 }
 
 impl Update {
-	fn new(path_p2pool: String, path_xmrig: String) -> Result<Self, Error> {
+	// Takes in current paths from [State]
-		let path_gupax = std::env::current_exe()?;
+	pub fn new(path_p2pool: &PathBuf, path_xmrig: &PathBuf, tor: bool) -> Self {
 		Self {
-			new_gupax: "?".to_string(),
+			path_gupax: crate::get_exe().unwrap(),
-			new_p2pool: "?".to_string(),
+			path_p2pool: path_p2pool.display().to_string(),
-			new_xmrig: "?".to_string(),
+			path_xmrig: path_xmrig.display().to_string(),
-			path_gupax,
+			tmp_dir: "".to_string(),
-			path_p2pool,
+			updating: Arc::new(Mutex::new(true)),
-			path_xmrig,
+			prog: Arc::new(Mutex::new(0)),
-			updating: Arc::new(Mutex::new(false)),
+			msg: Arc::new(Mutex::new("".to_string())),
-			update_prog: 0,
+			tor,
 		}
 	}
 
-	fn update(state: &mut State) -> Result((), Error) {
+	// Get a temporary random folder
-
+	// for package download contents
+	// Will look like [/tmp/gupax_A1m98FN3fa/] on Unix
+	pub fn get_tmp_dir() -> String {
+		let rand_string: String = thread_rng()
+			.sample_iter(&Alphanumeric)
+			.take(10)
+			.map(char::from)
+			.collect();
+		let tmp = std::env::temp_dir();
+		let tmp = format!("{}{}{}{}", tmp.display(), "/gupax_", rand_string, "/");
+		info!("Update | TMP directory ... {}", tmp);
+		tmp
 	}
 
+	// The HTTPS client created when Tor is enabled:
+	//     TLS implementation | tls-api -> native-tls
+	//     Tor implementatoin | arti
+	pub async fn get_tor_client() -> Result<ClientEnum, anyhow::Error> {
+		info!("Update | Creating Tor+HTTPS client...");
+		let tor = TorClient::create_bootstrapped(TorClientConfig::default()).await?;
+		let tls = tls_api_native_tls::TlsConnector::builder()?.build()?;
+	    let http = ArtiHttpConnector::new(tor, tls);
+		let client = ClientEnum::Tor(Client::builder().build(http));
+		info!("Update | Tor client ... OK");
+		Ok(client)
+	}
+
+	// The HTTPS client created when Tor is disabled:
+	//     TLS implementation | hyper-tls
+	pub async fn get_client() -> Result<ClientEnum, anyhow::Error> {
+		info!("Update | Creating HTTPS client...");
+		let mut https = hyper_tls::HttpsConnector::new();
+		https.https_only(true);
+		let client = ClientEnum::Https(Client::builder().build(https));
+		info!("Update | HTTPS client ... OK");
+		Ok(client)
+	}
+
+	// Download process:
+	// 0. setup tor, client, http, etc
+	// 1. fill vector with all enums
+	// 2. loop over vec, download metadata
+	// 3. if current == version, remove from vec
+	// 4. loop over vec, download links
+	// 5. extract, upgrade
+
+	#[tokio::main]
+	pub async fn start(&mut self) -> Result<(), anyhow::Error> {
+		// Set progress bar
+		*self.msg.lock().unwrap() = MSG_START.to_string();
+		*self.prog.lock().unwrap() = 0;
+
+		// Get temporary directory
+		*self.msg.lock().unwrap() = MSG_TMP.to_string();
+		let tmp_dir = Self::get_tmp_dir();
+		*self.prog.lock().unwrap() = 5;
+
+		// Make Pkg vector
+		*self.msg.lock().unwrap() = MSG_PKG.to_string();
+		let vec = vec![
+			Pkg::new(Gupax, &tmp_dir, self.prog.clone(), self.msg.clone()),
+			Pkg::new(P2pool, &tmp_dir, self.prog.clone(), self.msg.clone()),
+			Pkg::new(Xmrig, &tmp_dir, self.prog.clone(), self.msg.clone()),
+		];
+		let mut handles: Vec<JoinHandle<()>> = vec![];
+		*self.prog.lock().unwrap() = 5;
+
+		// Create Tor/HTTPS client
+		let mut client: ClientEnum;
+		if self.tor {
+			*self.msg.lock().unwrap() = MSG_TOR.to_string();
+			client = Self::get_tor_client().await?;
+		} else {
+			*self.msg.lock().unwrap() = MSG_HTTPS.to_string();
+			client = Self::get_client().await?;
+		}
+		*self.prog.lock().unwrap() = 10;
+
+		// loop for metadata
+		for pkg in vec.iter() {
+			info!("Update | Metadata | Starting ... {}", pkg.name);
+			let name = pkg.name.clone();
+			let version = Arc::clone(&pkg.version);
+			let request = hyper::Request::builder()
+				.method("GET")
+				.uri(pkg.link_metadata)
+				.header(hyper::header::USER_AGENT, hyper::header::HeaderValue::from_static("Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0"))
+				.body(Body::empty())?;
+			let client = client.clone();
+			let handle: JoinHandle<()> = tokio::spawn(async move {
+				Pkg::get_tor_response(name, version, client, request).await;
+			});
+			handles.push(handle);
+		}
+		for handle in handles {
+			handle.await?;
+		}
+		info!("Update | Metadata ... OK\n");
+		Ok(())
+
+	//----------------------------------------------
+	//
+	//	// loop for download
+	//	let mut handles: Vec<JoinHandle<()>> = vec![];
+	//	for pkg in vec.iter() {
+	//		let name = pkg.name.clone();
+	//		let bytes = Arc::clone(&pkg.bytes);
+	//		let version = pkg.version.lock().unwrap();
+	//		let link;
+	//		if pkg.name == Name::Xmrig {
+	//			link = pkg.link_prefix.clone() + &version + &pkg.link_suffix_1 + &version[1..] + &pkg.link_suffix_2;
+	//		} else {
+	//			link = pkg.link_prefix.clone() + &version + &pkg.link_suffix_1 + &version + &pkg.link_suffix_2;
+	//		}
+	//		println!("download: {:#?} | {}", pkg.name, link);
+	//		let request = Client::get(&client.clone(), &link);
+	//		let handle: JoinHandle<()> = tokio::spawn(async move {
+	//			get_bytes(request, bytes, name).await;
+	//		});
+	//		handles.push(handle);
+	//	}
+	//	for handle in handles {
+	//		handle.await.unwrap();
+	//	}
+	//	println!("download ... OK\n");
+	//
+	//	// extract
+	//	let TMP = num();
+	//	std::fs::create_dir(&TMP).unwrap();
+	//	for pkg in vec.iter() {
+	//		let name = TMP.to_string() + &pkg.name.to_string();
+	//		println!("extract: {:#?} | {}", pkg.name, name);
+	//		if pkg.name == Name::Gupax {
+	//			std::fs::OpenOptions::new().mode(0o700).create(true).write(true).open(&name);
+	//			std::fs::write(name, pkg.bytes.lock().unwrap().as_ref()).unwrap();
+	//		} else {
+	//			std::fs::create_dir(&name).unwrap();
+	//			tar::Archive::new(flate2::read::GzDecoder::new(pkg.bytes.lock().unwrap().as_ref())).unpack(name).unwrap();
+	//		}
+	//	}
+	//	println!("extract ... OK");
+	//
+	//async fn get_bytes(request: RequestBuilder, bytes: Arc<Mutex<bytes::Bytes>>, name: Name) {
+	//	*bytes.lock().unwrap() = request.send().await.unwrap().bytes().await.unwrap();
+	//	println!("{} download ... OK", name);
+	//}
+	//
+	//async fn func(request: RequestBuilder, version: Arc<Mutex<String>>, name: Name) {
+	//	let response = request.send().await.unwrap().bytes().await.unwrap();
+	//
+	//	let mut bytes = flate2::read::GzDecoder::new(response.as_ref());
+	//	let mut response = String::new();
+	//	bytes.read_to_string(&mut response).unwrap();
+	//
+	//	let response: Version = serde_json::from_str(&response).unwrap();
+	//	*version.lock().unwrap() = response.tag_name.clone();
+	//	println!("{} {} ... OK", name, response.tag_name);
+	//}
+	}
+}
+
+// Wrapper type around Tor/HTTPS client
+enum ClientEnum {
+	Tor(Client<ArtiHttpConnector<tor_rtcompat::PreferredRuntime, tls_api_native_tls::TlsConnector>>),
+	Https(Client<hyper_tls::HttpsConnector<hyper::client::HttpConnector>>),
+}
+
+//---------------------------------------------------------------------------------------------------- Pkg struct/impl
+#[derive(Debug)]
+pub struct Pkg {
+	name: Name,
+	link_metadata: &'static str,
+	link_prefix: &'static str,
+	link_suffix: &'static str,
+	link_extension: &'static str,
+	tmp_dir: String,
+	update_prog: Arc<Mutex<u8>>,
+	update_msg: Arc<Mutex<String>>,
+	bytes: Arc<Mutex<bytes::Bytes>>,
+	version: Arc<Mutex<String>>,
+}
+
+impl Pkg {
+	pub fn new(name: Name, tmp_dir: &String, update_prog: Arc<Mutex<u8>>, update_msg: Arc<Mutex<String>>) -> Self {
+		let link_metadata = match name {
+			Gupax => GUPAX_METADATA,
+			P2pool => P2POOL_METADATA,
+			Xmrig => XMRIG_METADATA,
+		};
+		let link_prefix = match name {
+			Gupax => GUPAX_PREFIX,
+			P2pool => P2POOL_PREFIX,
+			Xmrig => XMRIG_PREFIX,
+		};
+		let link_suffix = match name {
+			Gupax => GUPAX_SUFFIX,
+			P2pool => P2POOL_SUFFIX,
+			Xmrig => XMRIG_SUFFIX,
+		};
+		let link_extension = match name {
+			Gupax => GUPAX_EXTENSION,
+			P2pool => P2POOL_EXTENSION,
+			Xmrig => XMRIG_EXTENSION,
+		};
+		Self {
+			name,
+			link_metadata,
+			link_prefix,
+			link_suffix,
+			link_extension,
+			tmp_dir: tmp_dir.to_string(),
+			update_prog,
+			update_msg,
+			bytes: Arc::new(Mutex::new(bytes::Bytes::new())),
+			version: Arc::new(Mutex::new(String::new())),
+		}
+	}
+
+	// Generate GET request based off input URI + fake user agent
+	pub async fn get_request(self) -> Result<Request<Body>, anyhow::Error> {
+		let user_agent = FAKE_USER_AGENT[thread_rng().gen_range(0..50)];
+		let request = Request::builder()
+			.method("GET")
+			.uri(self.link_metadata)
+			.header(hyper::header::USER_AGENT, HeaderValue::from_static(user_agent))
+			.body(Body::empty())?;
+		Ok(request)
+	}
+
+	// Get response using [Tor client] + [request]
+	// and change the [version] under an Arc<Mutex>
+	pub async fn get_tor_response(name: Name, version: Arc<Mutex<String>>, client: Client<ArtiHttpConnector<tor_rtcompat::PreferredRuntime, tls_api_native_tls::TlsConnector>>, request: Request<Body>) -> Result<(), Error> {
+		let mut response = client.request(request).await?;
+		let body = hyper::body::to_bytes(response.body_mut()).await?;
+		let body: Version = serde_json::from_slice(&body)?;
+		*version.lock().unwrap() = body.tag_name.clone();
+		info!("Update | Metadata | {} {} ... OK", name, body.tag_name);
+		Ok(())
+	}
+
+	// Same thing, but without Tor.
+	pub async fn get_response(name: Name, version: Arc<Mutex<String>>, client: Client<hyper_tls::HttpsConnector<hyper::client::HttpConnector>>, request: Request<Body>) -> Result<(), Error> {
+		let mut response = client.request(request).await?;
+		let body = hyper::body::to_bytes(response.body_mut()).await?;
+		let body: Version = serde_json::from_slice(&body)?;
+		*version.lock().unwrap() = body.tag_name.clone();
+		info!("Update | Metadata | {} {} ... OK", name, body.tag_name);
+		Ok(())
+	}
+}
+
+// This inherits the value of [tag_name] from GitHub's JSON API
 #[derive(Debug, Serialize, Deserialize)]
-struct TagName {
+struct Version {
 	tag_name: String,
 }
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Copy, Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
-enum Error {
+pub enum Name {
-	Io(std::io::Error),
-	Serialize(toml::ser::Error),
-	Deserialize(toml::de::Error),
-}
-
-#[derive(Debug, Serialize, Deserialize)]
-enum Package {
 	Gupax,
 	P2pool,
 	Xmrig,
 }
 
+impl std::fmt::Display for Name {
+	fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+		write!(f, "{:?}", self)
+	}
+}