v0.5.0

maint(main): simply return out of the main function

.github/dependabot.yml

@@ -3,4 +3,4 @@ updates:
   - package-ecosystem: "cargo" # See documentation for possible values
     directory: "/" # Location of package manifests
     schedule:
-      interval: "daily"
+      interval: "weekly"

.github/workflows/release.yml

@@ -11,8 +11,9 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: taiki-e/create-gh-release-action@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          draft: true
+          token: ${{ secrets.GITHUB_TOKEN }}
 
   upload-assets:
     strategy:

Cargo.toml

@@ -1,24 +1,44 @@
 [package]
 name = "alterware-launcher"
-version = "0.2.0"
+version = "0.5.0"
 edition = "2021"
 build = "res/build.rs"
 
 [profile.release]
 opt-level = "s"
+
+# Symbols are a nice thing
+debug = true
+
 panic = "abort"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-http_req = { version = "0.9.0", default-features = false, features = [
+http_req = { version = "0.9.2", default-features = false, features = [
     "rust-tls",
 ] }
+sha1_smol = "1.0.0"
+serde = { version = "1.0.188", features = ["derive"] }
+serde_json = "1.0.106"
+rand = "0.8.5"
+semver = "1.0.18"
+zip = "0.6.6"
+colored = "2.0.4"
+
+[target.'cfg(windows)'.dependencies]
+steamlocate = "2.0.0-alpha.0"
+mslnk = "0.1.8"
+# https://github.com/mitsuhiko/self-replace/pull/16/
+windows-sys = { version = "0.48", features = [
+    "Win32_Security",
+] }
+self-replace = "1.3.6"
 
 [build-dependencies]
 winres = "0.1.12"
 
 [package.metadata.winres]
 OriginalFilename = "alterware-launcher.exe"
-FileDescription = "AlterWare mod updater & launcher"
-ProductName = "AlterWare Launcher"
+FileDescription = "AlterWare Launcher"
+ProductName = "AlterWare Launcher"

README.md

@@ -1,5 +1,69 @@
-# alterware-launcher
+# AlterWare Launcher
 
-1. Download [latest release](https://github.com/mxve/alterware-launcher/releases/latest/download/alterware-launcher-x86_64-pc-windows-msvc.zip)
-2. Unpack the archive and place alterware-launcher.exe in MW2/MW3 game directory
-3. Run alterware-launcher.exe
+### [AlterWare.dev](https://alterware.dev)
+
+##### IW4x | IW4-SP | IW5-Mod | IW6-Mod | S1-Mod
+
+---
+
+#### Installation
+
+1. Download the [latest alterware-launcher.exe](https://github.com/mxve/alterware-launcher/releases/latest/download/alterware-launcher.exe)
+2. Place alterware-launcher.exe in the game directory
+3. Run alterware-launcher.exe, after updating the game will launch automatically
+
+---
+
+#### Command line arguments
+
+- ```iw4-sp```, ```iw4x```, ```iw5-mod```, ```iw6-mod```, ```s1-mod```
+  - Skip automatic detection and launch the specified game
+    - This should always be the first argument if used
+- ```--update```, ```-u```
+  - Only update the game, don't launch it
+- ```--skip-launcher-update```
+  - Don't update the launcher
+- ```--bonus```
+  - Download bonus content
+- ```--force```, ```-f```
+  - Force file hash recheck
+- ```--path```, ```-p```
+  - Set the game path
+    - Do not include a trailing backslash in the path
+- ```--pass```
+  - Pass additional arguments to the game
+- ```--version```, ```-v```
+  - Print the launcher version
+
+Example: ```alterware-launcher.exe iw4x --bonus -u --path "C:\Games\IW4x" --pass "-console"```
+
+Some arguments can be set in alterware-launcher.json, args generally override the values of the config.
+
+---
+
+#### Support
+
+Visit the [AlterWare Forum](https://forum.alterware.dev/) or [Discord](https://discord.gg/2ETE8engZM) for support.
+
+---
+
+#### Building from Source
+
+- [Install Rust](https://rustup.rs/)
+- Clone the repository
+- Run ```cargo build --release```
+- The executable will be located in ```target/release```
+
+---
+
+### Note for server owners:
+When the launcher updates itself it needs to be restarted. It will return exit code 201 in this case.
+
+```
+@echo off
+:loop
+start /wait alterware-launcher.exe --update
+if %errorlevel% equ 201 (
+    goto loop
+)
+```

src/config.rs

@@ -0,0 +1,30 @@
+use crate::structs::Config;
+
+use std::{fs, path::PathBuf};
+
+pub fn load(config_path: PathBuf) -> Config {
+    if config_path.exists() {
+        let cfg = fs::read_to_string(&config_path).unwrap();
+        let cfg: Config = serde_json::from_str(&cfg).unwrap_or(Config::default());
+        return cfg;
+    }
+    save(config_path.clone(), Config::default());
+    Config::default()
+}
+
+pub fn save(config_path: PathBuf, config: Config) {
+    fs::write(config_path, serde_json::to_string(&config).unwrap()).unwrap();
+}
+
+pub fn save_value(config_path: PathBuf, key: &str, value: bool) {
+    let mut config = load(config_path.clone());
+    match key {
+        "update_only" => config.update_only = value,
+        "skip_self_update" => config.skip_self_update = value,
+        "download_bonus_content" => config.download_bonus_content = value,
+        "ask_bonus_content" => config.ask_bonus_content = value,
+        "force_update" => config.force_update = value,
+        _ => (),
+    }
+    save(config_path, config);
+}

src/github.rs

@@ -0,0 +1,22 @@
+use semver::Version;
+
+pub fn latest_tag(owner: &str, repo: &str) -> String {
+    let github_body = crate::http::get_body_string(
+        format!(
+            "https://api.github.com/repos/{}/{}/releases/latest",
+            owner, repo
+        )
+        .as_str(),
+    );
+    let github_json: serde_json::Value = serde_json::from_str(&github_body).unwrap();
+    github_json["tag_name"].to_string().replace('"', "")
+}
+
+pub fn latest_version(owner: &str, repo: &str) -> Version {
+    let tag = latest_tag(owner, repo).replace('v', "");
+    Version::parse(&tag).unwrap()
+}
+
+pub fn latest_release_url(owner: &str, repo: &str) -> String {
+    format!("https://github.com/{}/{}/releases/latest", owner, repo)
+}

src/global.rs

@@ -0,0 +1,5 @@
+pub const MASTER: &str = "https://master.alterware.dev";
+pub const GH_OWNER: &str = "mxve";
+pub const GH_REPO: &str = "alterware-launcher";
+pub const GH_IW4X_OWNER: &str = "iw4x";
+pub const GH_IW4X_REPO: &str = "iw4x-client";

src/http.rs

@@ -2,14 +2,25 @@ use std::{fs, io::Write, path::Path, str};
 
 pub fn get_body(url: &str) -> Vec<u8> {
     let mut res: Vec<u8> = Vec::new();
-    http_req::request::get(url, &mut res).unwrap_or_else(|error| {
-        panic!("\n\n{}:\n{:?}", "Error", error);
-    });
+    let req = http_req::request::Request::new(&url.try_into().unwrap())
+        .header(
+            "User-Agent",
+            "AlterWare Launcher | github.com/mxve/alterware-launcher",
+        )
+        .send(&mut res)
+        .unwrap_or_else(|error| {
+            panic!("\n\n{}:\n{:?}", "Error", error);
+        });
+
+    if req.status_code() == http_req::response::StatusCode::new(302) {
+        let location = req.headers().get("Location").unwrap().as_str();
+        return get_body(location);
+    }
 
     res
 }
 
-pub fn _get_body_string(url: &str) -> String {
+pub fn get_body_string(url: &str) -> String {
     String::from_utf8(get_body(url)).unwrap()
 }
 

src/io.rs

@@ -0,0 +1,22 @@
+use std::{fs, path::Path};
+
+pub fn unzip(zip_path: &Path, out_path: &Path) {
+    let mut archive = zip::ZipArchive::new(fs::File::open(zip_path).unwrap()).unwrap();
+    for i in 0..archive.len() {
+        let mut file = archive.by_index(i).unwrap();
+        let outpath = out_path.join(file.name());
+
+        if (*file.name()).ends_with('/') {
+            fs::create_dir_all(outpath).unwrap();
+        } else {
+            println!("Unpacking {}", file.name());
+            if let Some(p) = outpath.parent() {
+                if !p.exists() {
+                    fs::create_dir_all(p).unwrap();
+                }
+            }
+            let mut outfile = fs::File::create(&outpath).unwrap();
+            std::io::copy(&mut file, &mut outfile).unwrap();
+        }
+    }
+}

src/iw4x.rs

@@ -0,0 +1,42 @@
+use crate::github;
+use crate::global::*;
+use crate::http;
+use crate::misc;
+
+use colored::*;
+use std::{fs, path::Path};
+
+pub fn local_revision(dir: &Path) -> u16 {
+    if let Ok(revision) = fs::read_to_string(dir.join(".iw4xrevision")) {
+        misc::rev_to_int(&revision)
+    } else {
+        0
+    }
+}
+
+pub fn remote_revision() -> u16 {
+    misc::rev_to_int(&github::latest_tag(GH_IW4X_OWNER, GH_IW4X_REPO))
+}
+
+pub fn update(dir: &Path) {
+    let remote = remote_revision();
+    let local = local_revision(dir);
+
+    if remote <= local && dir.join("iw4x.dll").exists() {
+        return;
+    }
+
+    println!(
+        "[{}] {}",
+        "Downloading".bright_yellow(),
+        dir.join("iw4x.dll").display()
+    );
+    http::download_file(
+        &format!(
+            "{}/download/iw4x.dll",
+            github::latest_release_url(GH_IW4X_OWNER, GH_IW4X_REPO)
+        ),
+        &dir.join("iw4x.dll"),
+    );
+    fs::write(dir.join(".iw4xrevision"), format!("r{}", remote)).unwrap();
+}

src/main.rs

@@ -1,49 +1,469 @@
+mod config;
+mod github;
+mod global;
 mod http;
-use std::path::PathBuf;
+mod iw4x;
+mod misc;
+mod self_update;
+mod structs;
 
-const MASTER: &str = "https://master.alterware.dev";
+use global::*;
+use structs::*;
 
-fn download_and_launch(url: &str, file_path: &PathBuf) {
-    http::download_file(url, file_path);
-    std::process::Command::new(file_path)
-        .spawn()
-        .unwrap()
-        .wait()
-        .unwrap();
-}
+use colored::*;
+#[cfg(windows)]
+use mslnk::ShellLink;
+use std::{borrow::Cow, collections::HashMap, fs, path::Path, path::PathBuf};
+#[cfg(windows)]
+use steamlocate::SteamDir;
 
-fn main() {
-    let args: Vec<String> = std::env::args().collect();
-    let game: String;
-    if args.len() > 1 {
-        game = String::from(&args[1]);
-    } else {
-        // check if iw4sp.exe or iw4mp.exe exists
-        if std::path::Path::new("iw4sp.exe").exists() || std::path::Path::new("iw4mp.exe").exists()
-        {
-            game = String::from("iw4-sp");
-        } else if std::path::Path::new("iw5sp.exe").exists()
-            || std::path::Path::new("iw5mp.exe").exists()
-            || std::path::Path::new("iw5mp_server.exe").exists()
-        {
-            game = String::from("iw5-mod");
-        } else {
-            println!("No game specified and no game found in current directory");
-            return;
+#[cfg(windows)]
+fn get_installed_games(games: &Vec<Game>) -> Vec<(u32, PathBuf)> {
+    let mut installed_games = Vec::new();
+    let mut steamdir = match SteamDir::locate() {
+        Some(steamdir) => steamdir,
+        None => {
+            println!("{}", "Steam not found!".yellow());
+            return installed_games;
+        }
+    };
+
+    for game in games {
+        if let Some(app) = steamdir.app(&game.app_id) {
+            installed_games.push((game.app_id, PathBuf::from(&app.path)));
         }
     }
 
-    if game == "iw4-sp" {
-        download_and_launch(
-            &format!("{}/iw4/iw4-sp.exe", MASTER),
-            &PathBuf::from("iw4-sp.exe"),
-        );
-    } else if game == "iw5-mod" {
-        download_and_launch(
-            &format!("{}/iw5/iw5-mod.exe", MASTER),
-            &PathBuf::from("iw5-mod.exe"),
-        );
-    } else {
-        println!("Invalid game");
+    installed_games
+}
+
+#[cfg(windows)]
+fn setup_client_links(game: &Game, game_dir: &Path) {
+    if game.client.len() > 1 {
+        println!("Multiple clients installed, use the shortcuts (launch-<client>.lnk in the game directory or on the desktop) to launch a specific client.");
+    }
+
+    let target = game_dir.join("alterware-launcher.exe");
+
+    for c in game.client.iter() {
+        let lnk = game_dir.join(format!("launch-{}.lnk", c));
+
+        let mut sl = ShellLink::new(target.clone()).unwrap();
+        sl.set_arguments(Some(c.to_string()));
+        sl.set_icon_location(Some(
+            game_dir
+                .join(format!("{}.exe", c))
+                .to_string_lossy()
+                .into_owned(),
+        ));
+        sl.create_lnk(&lnk).unwrap();
     }
 }
+
+#[cfg(windows)]
+fn setup_desktop_links(path: &Path, game: &Game) {
+    println!("Create Desktop shortcut? (Y/n)");
+    let input = misc::stdin().to_ascii_lowercase();
+
+    if input == "y" || input.is_empty() {
+        let desktop = PathBuf::from(&format!(
+            "{}\\Desktop",
+            std::env::var("USERPROFILE").unwrap()
+        ));
+
+        let target = path.join("alterware-launcher.exe");
+
+        for c in game.client.iter() {
+            let lnk = desktop.join(format!("{}.lnk", c));
+
+            let mut sl = ShellLink::new(target.clone()).unwrap();
+            sl.set_arguments(Some(c.to_string()));
+            sl.set_icon_location(Some(
+                path.join(format!("{}.exe", c))
+                    .to_string_lossy()
+                    .into_owned(),
+            ));
+            sl.create_lnk(lnk).unwrap();
+        }
+    }
+}
+
+#[cfg(windows)]
+fn auto_install(path: &Path, game: &Game) {
+    setup_client_links(game, path);
+    setup_desktop_links(path, game);
+    update(game, path, false, false);
+}
+
+#[cfg(windows)]
+fn windows_launcher_install(games: &Vec<Game>) {
+    println!(
+        "{}",
+        "No game specified/found. Checking for installed Steam games..".yellow()
+    );
+    let installed_games = get_installed_games(games);
+
+    if !installed_games.is_empty() {
+        let current_dir = std::env::current_dir().unwrap();
+        for (id, path) in installed_games.iter() {
+            if current_dir.starts_with(path) {
+                println!("Found game in current directory.");
+                println!("Installing AlterWare client for {}.", id);
+                let game = games.iter().find(|&g| g.app_id == *id).unwrap();
+                auto_install(path, game);
+                println!("Installation complete. Please run the launcher again or use a shortcut to launch the game.");
+                std::io::stdin().read_line(&mut String::new()).unwrap();
+                std::process::exit(0);
+            }
+        }
+
+        println!("Installed games:");
+
+        for (id, path) in installed_games.iter() {
+            println!("{}: {}", id, path.display());
+        }
+
+        println!("Enter the ID of the game you want to install the AlterWare client for, enter 0 for manual selection:");
+        let input: u32 = misc::stdin().parse().unwrap();
+
+        if input == 0 {
+            return manual_install(games);
+        }
+
+        for (id, path) in installed_games.iter() {
+            if *id == input {
+                let game = games.iter().find(|&g| g.app_id == input).unwrap();
+
+                let launcher_path = std::env::current_exe().unwrap();
+                let target_path = path.join("alterware-launcher.exe");
+
+                if launcher_path != target_path {
+                    fs::copy(launcher_path, target_path).unwrap();
+                    println!("Launcher copied to {}", path.display());
+                }
+                auto_install(path, game);
+                println!("Installation complete. Please run the launcher again or use a shortcut to launch the game.");
+                std::io::stdin().read_line(&mut String::new()).unwrap();
+                break;
+            }
+        }
+        std::process::exit(0);
+    } else {
+        manual_install(games);
+    }
+}
+
+fn prompt_client_selection(games: &[Game]) -> String {
+    println!(
+        "Couldn't detect any games, please select a client to install in the current directory:"
+    );
+    for (i, g) in games.iter().enumerate() {
+        for c in g.client.iter() {
+            println!("{}: {}", i, c);
+        }
+    }
+    let input: usize = misc::stdin().parse().unwrap();
+    String::from(games[input].client[0])
+}
+
+fn manual_install(games: &[Game]) {
+    let selection = prompt_client_selection(games);
+    let game = games.iter().find(|&g| g.client[0] == selection).unwrap();
+    update(game, &std::env::current_dir().unwrap(), false, false);
+    println!("Installation complete. Please run the launcher again or use a shortcut to launch the game.");
+    std::io::stdin().read_line(&mut String::new()).unwrap();
+    std::process::exit(0);
+}
+
+fn update_dir(
+    cdn_info: &Vec<CdnFile>,
+    remote_dir: &str,
+    dir: &Path,
+    hashes: &mut HashMap<String, String>,
+) {
+    let remote_dir = format!("{}/", remote_dir);
+
+    for file in cdn_info {
+        if !file.name.starts_with(&remote_dir) || file.name == "iw4/iw4x.dll" {
+            continue;
+        }
+
+        let sha1_remote = file.hash.to_lowercase();
+        let file_name = &file.name.replace(remote_dir.as_str(), "");
+        let file_path = dir.join(file_name);
+        if file_path.exists() {
+            let sha1_local = hashes
+                .get(file_name)
+                .map(Cow::Borrowed)
+                .unwrap_or_else(|| Cow::Owned(misc::get_file_sha1(&file_path)))
+                .to_string();
+
+            if sha1_local != sha1_remote {
+                println!(
+                    "[{}]    {}",
+                    "Updating".bright_yellow(),
+                    file_path.display()
+                );
+                http::download_file(&format!("{}/{}", MASTER, file.name), &file_path);
+            } else {
+                println!("[{}]     {}", "Checked".bright_blue(), file_path.display());
+            }
+            hashes.insert(file_name.to_owned(), sha1_remote.to_owned());
+        } else {
+            println!(
+                "[{}] {}",
+                "Downloading".bright_yellow(),
+                file_path.display()
+            );
+            if let Some(parent) = file_path.parent() {
+                if !parent.exists() {
+                    fs::create_dir_all(parent).unwrap();
+                }
+            }
+            http::download_file(&format!("{}/{}", MASTER, file.name), &file_path);
+            hashes.insert(file_name.to_owned(), sha1_remote.to_owned());
+        }
+    }
+}
+
+fn update(game: &Game, dir: &Path, bonus_content: bool, force: bool) {
+    let cdn_info: Vec<CdnFile> = serde_json::from_str(&http::get_body_string(
+        format!("{}/files.json", MASTER).as_str(),
+    ))
+    .unwrap();
+
+    let mut hashes = HashMap::new();
+    let hash_file = dir.join(".sha-sums");
+    if hash_file.exists() && !force {
+        let hash_file = fs::read_to_string(hash_file).unwrap();
+        for line in hash_file.lines() {
+            let mut split = line.split_whitespace();
+            let hash = split.next().unwrap();
+            let file = split.next().unwrap();
+            hashes.insert(file.to_owned(), hash.to_owned());
+        }
+    }
+
+    update_dir(&cdn_info, game.engine, dir, &mut hashes);
+
+    if game.engine == "iw4" {
+        iw4x::update(dir);
+    }
+
+    if bonus_content && !game.bonus.is_empty() {
+        for bonus in game.bonus.iter() {
+            update_dir(&cdn_info, bonus, dir, &mut hashes);
+        }
+    }
+
+    let mut hash_file_content = String::new();
+    for (file, hash) in hashes.iter() {
+        hash_file_content.push_str(&format!("{} {}\n", hash, file));
+    }
+    fs::write(dir.join(".sha-sums"), hash_file_content).unwrap();
+}
+
+fn launch(file_path: &PathBuf, args: &str) {
+    println!("Launching {} {}", file_path.display(), args);
+    std::process::Command::new(file_path)
+        .args(args.trim().split(' '))
+        .spawn()
+        .expect("Failed to launch the game")
+        .wait()
+        .expect("Failed to wait for the game process to finish");
+}
+
+#[cfg(windows)]
+fn setup_env() {
+    colored::control::set_virtual_terminal(true).unwrap_or_else(|error| {
+        println!("{:#?}", error);
+        colored::control::SHOULD_COLORIZE.set_override(false);
+    });
+}
+
+fn arg_value(args: &[String], arg: &str) -> Option<String> {
+    args.iter()
+        .position(|r| r == arg)
+        .map(|e| args[e + 1].clone())
+}
+
+fn arg_bool(args: &[String], arg: &str) -> bool {
+    args.iter().any(|r| r == arg)
+}
+
+fn arg_remove(args: &mut Vec<String>, arg: &str) {
+    args.iter().position(|r| r == arg).map(|e| args.remove(e));
+}
+
+fn arg_remove_value(args: &mut Vec<String>, arg: &str) {
+    if let Some(e) = args.iter().position(|r| r == arg) {
+        args.remove(e);
+        args.remove(e);
+    };
+}
+
+fn main() {
+    #[cfg(windows)]
+    setup_env();
+
+    let mut args: Vec<String> = std::env::args().collect();
+
+    if arg_bool(&args, "--help") {
+        println!("CLI Args:");
+        println!("    <client>: Specify the client to launch");
+        println!("    --help: Display this help message");
+        println!("    --version: Display the launcher version");
+        println!("    --path/-p <path>: Specify the game directory");
+        println!("    --update/-u: Update only, don't launch the game");
+        println!("    --bonus: Download bonus content");
+        println!("    --force/-f: Force file hash recheck");
+        println!("    --pass <args>: Pass arguments to the game");
+        println!("    --skip-launcher-update: Skip launcher self-update");
+        println!(
+            "\nExample:\n    alterware-launcher.exe iw4x --bonus --pass \"-console -nointro\""
+        );
+        return;
+    }
+
+    if arg_bool(&args, "--version") || arg_bool(&args, "-v") {
+        println!(
+            "{} v{}",
+            "AlterWare Launcher".bright_green(),
+            env!("CARGO_PKG_VERSION")
+        );
+        println!("https://github.com/{}/{}", GH_OWNER, GH_REPO);
+        println!(
+            "\n{}{}{}{}{}{}{}",
+            "For ".on_black(),
+            "Alter".bright_blue().on_black().underline(),
+            "Ware".white().on_black().underline(),
+            ".dev".on_black().underline(),
+            " by ".on_black(),
+            "mxve".bright_magenta().on_black().underline(),
+            ".de".on_black().underline()
+        );
+        return;
+    }
+
+    let install_path: PathBuf;
+    if let Some(path) = arg_value(&args, "--path") {
+        install_path = PathBuf::from(path);
+        arg_remove_value(&mut args, "--path");
+    } else if let Some(path) = arg_value(&args, "-p") {
+        install_path = PathBuf::from(path);
+        arg_remove_value(&mut args, "-p");
+    } else {
+        install_path = std::env::current_dir().unwrap();
+    }
+
+    let mut cfg = config::load(install_path.join("alterware-launcher.json"));
+
+    if !arg_bool(&args, "--skip-launcher-update") && !cfg.skip_self_update {
+        self_update::run(cfg.update_only);
+    } else {
+        arg_remove(&mut args, "--skip-launcher-update");
+    }
+
+    if arg_bool(&args, "--update") || arg_bool(&args, "-u") {
+        cfg.update_only = true;
+        arg_remove(&mut args, "--update");
+        arg_remove(&mut args, "-u");
+    }
+
+    if arg_bool(&args, "--bonus") {
+        cfg.download_bonus_content = true;
+        arg_remove(&mut args, "--bonus");
+    }
+
+    if arg_bool(&args, "--force") || arg_bool(&args, "-f") {
+        cfg.force_update = true;
+        arg_remove(&mut args, "--force");
+        arg_remove(&mut args, "-f");
+    }
+
+    if let Some(pass) = arg_value(&args, "--pass") {
+        cfg.args = pass;
+        arg_remove_value(&mut args, "--pass");
+    } else if cfg.args.is_empty() {
+        cfg.args = String::from("");
+    }
+
+    let games_json = http::get_body_string(format!("{}/games.json", MASTER).as_str());
+    let games: Vec<Game> = serde_json::from_str(&games_json).unwrap();
+
+    let mut game: String = String::new();
+    if args.len() > 1 {
+        game = String::from(&args[1]);
+    } else {
+        'main: for g in games.iter() {
+            for r in g.references.iter() {
+                if install_path.join(r).exists() {
+                    if g.client.len() > 1 {
+                        if cfg.update_only {
+                            game = String::from(g.client[0]);
+                            break 'main;
+                        }
+
+                        #[cfg(windows)]
+                        setup_client_links(g, &std::env::current_dir().unwrap());
+
+                        #[cfg(not(windows))]
+                        println!("Multiple clients installed, set the client as the first argument to launch a specific client.");
+                        println!("Select a client to launch:");
+                        for (i, c) in g.client.iter().enumerate() {
+                            println!("{}: {}", i, c);
+                        }
+                        game = String::from(g.client[misc::stdin().parse::<usize>().unwrap()]);
+                        break 'main;
+                    }
+                    game = String::from(g.client[0]);
+                    break 'main;
+                }
+            }
+        }
+    }
+
+    for g in games.iter() {
+        for c in g.client.iter() {
+            if c == &game {
+                if cfg.ask_bonus_content && !g.bonus.is_empty() {
+                    println!("Download bonus content? (Y/n)");
+                    let input = misc::stdin().to_ascii_lowercase();
+                    cfg.download_bonus_content = input != "n";
+                    config::save_value(
+                        install_path.join("alterware-launcher.json"),
+                        "download_bonus_content",
+                        cfg.download_bonus_content,
+                    );
+                    config::save_value(
+                        install_path.join("alterware-launcher.json"),
+                        "ask_bonus_content",
+                        false,
+                    );
+                }
+
+                update(
+                    g,
+                    install_path.as_path(),
+                    cfg.download_bonus_content,
+                    cfg.force_update,
+                );
+                if !cfg.update_only {
+                    launch(&install_path.join(format!("{}.exe", c)), &cfg.args);
+                }
+                return;
+            }
+        }
+    }
+
+    #[cfg(windows)]
+    windows_launcher_install(&games);
+
+    #[cfg(not(windows))]
+    manual_install(&games);
+
+    println!("{}", "Game not found!".bright_red());
+    println!("Place the launcher in the game folder, if that doesn't work specify the client on the command line (ex. alterware-launcher.exe iw4-sp)");
+    println!("Press enter to exit...");
+    std::io::stdin().read_line(&mut String::new()).unwrap();
+}

src/misc.rs

@@ -0,0 +1,20 @@
+use std::{fs, path::PathBuf};
+
+pub fn get_file_sha1(path: &PathBuf) -> String {
+    let mut sha1 = sha1_smol::Sha1::new();
+    sha1.update(&fs::read(path).unwrap());
+    sha1.digest().to_string()
+}
+
+pub fn stdin() -> String {
+    let mut input = String::new();
+    std::io::stdin().read_line(&mut input).unwrap();
+    input.trim().to_string()
+}
+
+pub fn rev_to_int(rev: &str) -> u16 {
+    rev.strip_prefix('r')
+        .unwrap_or("0")
+        .parse::<u16>()
+        .unwrap_or(0)
+}

src/self_update.rs

@@ -0,0 +1,84 @@
+use crate::github;
+use crate::global::*;
+
+use semver::Version;
+#[cfg(not(windows))]
+use std::{thread, time};
+
+pub fn self_update_available() -> bool {
+    let current_version: Version = Version::parse(env!("CARGO_PKG_VERSION")).unwrap();
+    let latest_version = github::latest_version(GH_OWNER, GH_REPO);
+
+    current_version < latest_version
+}
+
+#[cfg(not(windows))]
+pub fn run(_update_only: bool) {
+    if self_update_available() {
+        println!("A new version of the AlterWare launcher is available.");
+        println!(
+            "Download it at {}",
+            github::latest_release_url(GH_OWNER, GH_REPO)
+        );
+        println!("Launching in 10 seconds..");
+        thread::sleep(time::Duration::from_secs(10));
+    }
+}
+
+#[cfg(windows)]
+pub fn run(update_only: bool) {
+    use std::{fs, path::PathBuf};
+
+    use crate::http;
+
+    let working_dir = std::env::current_dir().unwrap();
+    let files = fs::read_dir(&working_dir).unwrap();
+
+    for file in files {
+        let file = file.unwrap();
+        let file_name = file.file_name().into_string().unwrap();
+
+        if file_name.contains("alterware-launcher")
+            && (file_name.contains(".__relocated__.exe")
+                || file_name.contains(".__selfdelete__.exe"))
+        {
+            fs::remove_file(file.path()).unwrap();
+        }
+    }
+
+    if self_update_available() {
+        println!("Performing launcher self-update.");
+        println!(
+            "If you run into any issues, please download the latest version at {}",
+            github::latest_release_url(GH_OWNER, GH_REPO)
+        );
+
+        let update_binary = PathBuf::from("alterware-launcher-update.exe");
+        let file_path = working_dir.join(&update_binary);
+
+        if update_binary.exists() {
+            fs::remove_file(&update_binary).unwrap();
+        }
+
+        http::download_file(
+            &format!(
+                "{}/download/alterware-launcher.exe",
+                github::latest_release_url(GH_OWNER, GH_REPO)
+            ),
+            &file_path,
+        );
+
+        if !file_path.exists() {
+            println!("Failed to download launcher update.");
+            return;
+        }
+
+        self_replace::self_replace("alterware-launcher-update.exe").unwrap();
+        fs::remove_file(&file_path).unwrap();
+        println!("Launcher updated. Please run it again.");
+        if !update_only {
+            std::io::stdin().read_line(&mut String::new()).unwrap();
+        }
+        std::process::exit(201);
+    }
+}

src/structs.rs

@@ -0,0 +1,38 @@
+#[derive(serde::Deserialize, serde::Serialize)]
+pub struct CdnFile {
+    pub name: String,
+    pub size: u32,
+    pub hash: String,
+}
+
+#[derive(serde::Deserialize, serde::Serialize)]
+pub struct Game<'a> {
+    pub engine: &'a str,
+    pub client: Vec<&'a str>,
+    pub references: Vec<&'a str>,
+    pub app_id: u32,
+    pub bonus: Vec<&'a str>,
+}
+
+#[derive(serde::Deserialize, serde::Serialize)]
+pub struct Config {
+    pub update_only: bool,
+    pub skip_self_update: bool,
+    pub download_bonus_content: bool,
+    pub ask_bonus_content: bool,
+    pub force_update: bool,
+    pub args: String,
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Self {
+            update_only: false,
+            skip_self_update: false,
+            download_bonus_content: false,
+            ask_bonus_content: true,
+            force_update: false,
+            args: String::from(""),
+        }
+    }
+}