Update config files for v7 (#12)

* platform: fix build on Linux and update web-view

* deps: replace xz-decom with xz2 and update deps

* platform: fix regression...

... that prevents the build on Windows

* linux: implement platform-dependent functions

* travis: add macos and windows CI

* travis: use official Rust Docker image

* Update Cargo.lock for new version

* Break apart REST into separate services

This cleans up locking, ensures consistent futures for all endpoints
and enhances code re-use.

* Clean up codebase, fixing minor errors

* Update packages, use async client for downloading config

While this has a hell of a lot more boilerplate, this is quite
a bit cleaner.

* Add explicit 'dyn's as per Rust nightly requirements

* Migrate self updating functions to own module

* Migrate assets to server module

* Use patched web-view to fix dialogs, remove nfd

* Implement basic dark mode

* Revert window.close usage

* ui: split files and use Webpack

* frontend: ui: include prebuilt assets...

... and update rust side stuff

* build: integrate webpack building into build.rs

* Polish Vue UI split

* Add instructions for node + yarn

* native: fix uninstall self-destruction behavior...... by not showing the command prompt window and fork-spawning the cmd

* native: deal with Unicode issues in native APIs

* native: further improve Unicode support on Windows

* travis: add cache and fix issues

* ui: use Buefy components to...

... beautify the UI

* ui: makes error message selectable

* Make launcher mode behaviour more robust

* Fix error display on launcher pages

* Correctly handle exit on error

* Bump installer version

.travis.yml

@@ -1,11 +1,27 @@
-os: linux
-dist: trusty
-sudo: required
-services:
-  - docker
+matrix:
+  include:
+    - os: linux
+      language: cpp
+      sudo: required
+      dist: trusty
+      services: docker
+      install: docker pull rust:1
+      cache:
+        directories:
+          - $HOME/.cargo
+          - $TRAVIS_BUILD_DIR/ui/node_modules
+      script: docker run -v $HOME/.cargo:/root/.cargo -v $(pwd):/liftinstall rust:1 /bin/bash -ex /liftinstall/.travis/build.sh
 
-install:
- - docker pull ubuntu:18.04
+    - os: osx
+      language: rust
+      cache: cargo
+      osx_image: xcode10
+      script: brew install yarn && cargo build
 
-script:
- - docker run -v $(pwd):/liftinstall ubuntu:18.04 /bin/bash -ex /liftinstall/.travis/build.sh
+    - os: windows
+      language: rust
+      cache: cargo
+      script: 
+        - choco install nodejs yarn
+        - export PATH="$PROGRAMFILES/nodejs/:$PROGRAMFILES (x86)/Yarn/bin/:$PATH"
+        - cargo build

.travis/build.sh

@@ -1,10 +1,15 @@
 #!/usr/bin/env bash
-cd /liftinstall
+cd /liftinstall || exit 1
 
-apt update
-apt install -y libwebkit2gtk-4.0-dev libssl-dev
+# setup NodeJS
+curl -sL https://deb.nodesource.com/setup_12.x | bash -
+# setup Yarn
+curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
+echo "deb https://dl.yarnpkg.com/debian/ stable main" > /etc/apt/sources.list.d/yarn.list
 
-curl https://sh.rustup.rs -sSf | sh -s -- -y
-export PATH=~/.cargo/bin:$PATH
+apt-get update
+apt-get install -y libwebkit2gtk-4.0-dev libssl-dev nodejs yarn
+
+yarn --cwd ui
 
 cargo build

Cargo.toml

@@ -8,47 +8,50 @@ description = "An adaptable installer for your application."
 build = "build.rs"
 
 [dependencies]
-web-view = {git = "https://github.com/Boscop/web-view.git", rev = "555f422d09cbb94e82a728d47e9e07ca91963f6e"}
+web-view = {git = "https://github.com/j-selby/web-view.git", rev = "752106e4637356cbdb39a0bf1113ea3ae8a14243"}
 
 hyper = "0.11.27"
-futures = "*"
-mime_guess = "1.8.3"
-url = "*"
+futures = "0.1.25"
+mime_guess = "1.8.6"
+url = "1.7.2"
 
-reqwest = "0.9.0"
-number_prefix = "0.2.7"
+reqwest = "0.9.12"
+number_prefix = "0.3.0"
 
-serde = "1.0.27"
-serde_derive = "1.0.27"
-serde_json = "1.0.9"
+serde = "1.0.89"
+serde_derive = "1.0.89"
+serde_json = "1.0.39"
 
-toml = "0.4"
+toml = "0.5.0"
 
 semver = {version = "0.9.0", features = ["serde"]}
-regex = "0.2"
+regex = "1.1.5"
 
-dirs = "1.0"
-zip = "0.4.2"
-xz-decom = {git = "https://github.com/j-selby/xz-decom.git", rev = "9ebf3d00d9ff909c39eec1d2cf7e6e068ce214e5"}
+dirs = "1.0.5"
+zip = "0.5.1"
+xz2 = "0.1.6"
 tar = "0.4"
 
 log = "0.4"
 fern = "0.5"
-chrono = "0.4.5"
+chrono = "0.4.6"
 
 clap = "2.32.0"
 
 [build-dependencies]
-walkdir = "2"
-serde = "1.0.27"
-serde_derive = "1.0.27"
-toml = "0.4"
+walkdir = "2.2.7"
+serde = "1.0.89"
+serde_derive = "1.0.89"
+toml = "0.5.0"
+which = "2.0.1"
 
 [target.'cfg(windows)'.dependencies]
-# NFD is needed on Windows, as web-view doesn't work correctly here
-nfd = "0.0.4"
-
 winapi = { version = "0.3", features = ["psapi", "winbase", "winioctl", "winnt"] }
+widestring = "0.4.0"
+
+[target.'cfg(not(windows))'.dependencies]
+sysinfo = "0.8.2"
+slug = "0.1.4"
 
 [target.'cfg(windows)'.build-dependencies]
 winres = "0.1"

README.md

@@ -22,6 +22,7 @@ For more detailed instructions, look at the usage documentation above.
 There are are few system dependencies depending on your platform:
 - For all platforms, `cargo` should be available on your PATH. [Rustup](https://rustup.rs/) is the 
   recommended way to achieve this. Stable or Nightly Rust works fine.
+- Have node.js and Yarn available on your PATH (for building UI components, not needed at runtime).
 - For Windows (MSVC), you need Visual Studio installed.
 - For Windows (Mingw), you need `gcc`/`g++` available on the PATH.
 - For Mac, you need Xcode installed, and Clang/etc available on the PATH.
@@ -33,8 +34,8 @@ apt install -y build-essential libwebkit2gtk-4.0-dev libssl-dev
 
 In order to build yourself an installer, as a bare minimum, you need to:
 
-- Add your favicon to `static/favicon.ico`
-- Add your logo to `static/logo.png`
+- Add your favicon to `ui/public/favicon.ico`
+- Add your logo to `ui/src/assets/logo.png`
 - Modify the bootstrap configuration file as needed (`config.PLATFORM.toml`).
 - Have the main configuration file somewhere useful, reachable over HTTP.
 - Run:

bootstrap.macos.toml

@@ -0,0 +1,3 @@
+# fake configuration for CI purpose only
+name = "yuzu"
+target_url = "https://raw.githubusercontent.com/j-selby/test-installer/master/config.linux.v2.toml"

bootstrap.windows.toml

@@ -1,2 +1,2 @@
 name = "yuzu"
-target_url = "https://raw.githubusercontent.com/yuzu-emu/liftinstall/master/config.windows.v6.toml"
+target_url = "https://raw.githubusercontent.com/yuzu-emu/liftinstall/master/config.windows.v7.toml"

build.rs

@@ -1,5 +1,3 @@
-extern crate walkdir;
-
 #[cfg(windows)]
 extern crate winres;
 
@@ -11,24 +9,19 @@ extern crate serde;
 extern crate serde_derive;
 extern crate toml;
 
-use walkdir::WalkDir;
+extern crate which;
 
 use std::env;
 use std::path::PathBuf;
 
 use std::fs::copy;
-use std::fs::create_dir_all;
 use std::fs::File;
 
-use std::io::BufRead;
-use std::io::BufReader;
 use std::io::Read;
-use std::io::Write;
+use std::process::Command;
 
 use std::env::consts::OS;
 
-const FILES_TO_PREPROCESS: &'static [&'static str] = &["helpers.js", "views.js"];
-
 /// Describes the application itself.
 #[derive(Debug, Deserialize)]
 pub struct BaseAttributes {
@@ -39,7 +32,7 @@ pub struct BaseAttributes {
 #[cfg(windows)]
 fn handle_binary(config: &BaseAttributes) {
     let mut res = winres::WindowsResource::new();
-    res.set_icon("static/favicon.ico");
+    res.set_icon("ui/public/favicon.ico");
     res.set(
         "FileDescription",
         &format!("Interactive installer for {}", config.name),
@@ -62,6 +55,8 @@ fn handle_binary(_config: &BaseAttributes) {}
 
 fn main() {
     let output_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
+    let current_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
+    let ui_dir = current_dir.join("ui");
 
     let os = OS.to_lowercase();
 
@@ -92,80 +87,33 @@ fn main() {
     // Copy for the main build
     copy(&target_config, output_dir.join("bootstrap.toml")).expect("Unable to copy config file");
 
-    // Copy files from static/ to build dir
-    for entry in WalkDir::new("static") {
-        let entry = entry.expect("Unable to read output directory");
+    let yarn_binary = which::which("yarn")
+        .expect("Failed to find yarn - please go ahead and install it!");
 
-        let output_file = output_dir.join(entry.path());
-
-        if entry.path().is_dir() {
-            create_dir_all(output_file).expect("Unable to create dir");
-        } else {
-            let filename = entry
-                .path()
-                .file_name()
-                .expect("Unable to parse filename")
+    // Build and deploy frontend files
+    Command::new(&yarn_binary)
+        .arg("--version")
+        .spawn()
+        .expect("Yarn could not be launched");
+    Command::new(&yarn_binary)
+        .arg("--cwd")
+        .arg(ui_dir.to_str().expect("Unable to covert path"))
+        .spawn()
+        .unwrap()
+        .wait().expect("Unable to install Node.JS dependencies using Yarn");
+    Command::new(&yarn_binary)
+        .args(&[
+            "--cwd",
+            ui_dir.to_str().expect("Unable to covert path"),
+            "run",
+            "build",
+            "--dest",
+            output_dir
+                .join("static")
                 .to_str()
-                .expect("Unable to convert to string");
-
-            if FILES_TO_PREPROCESS.contains(&filename) {
-                // Do basic preprocessing - transcribe template string
-                let source = BufReader::new(File::open(entry.path()).expect("Unable to copy file"));
-                let mut target = File::create(output_file).expect("Unable to copy file");
-
-                let mut is_template_string = false;
-
-                for line in source.lines() {
-                    let line = line.expect("Unable to read line from JS file");
-
-                    let mut is_break = false;
-                    let mut is_quote = false;
-
-                    let mut output_line = String::new();
-
-                    if is_template_string {
-                        output_line += "\"";
-                    }
-
-                    for c in line.chars() {
-                        if c == '\\' {
-                            is_break = true;
-                            output_line.push('\\');
-                            continue;
-                        }
-
-                        if (c == '\"' || c == '\'') && !is_break && !is_template_string {
-                            is_quote = !is_quote;
-                        }
-
-                        if c == '`' && !is_break && !is_quote {
-                            output_line += "\"";
-                            is_template_string = !is_template_string;
-                            continue;
-                        }
-
-                        if c == '"' && !is_break && is_template_string {
-                            output_line += "\\\"";
-                            continue;
-                        }
-
-                        is_break = false;
-                        output_line.push(c);
-                    }
-
-                    if is_template_string {
-                        output_line += "\" +";
-                    }
-
-                    output_line.push('\n');
-
-                    target
-                        .write(output_line.as_bytes())
-                        .expect("Unable to write line");
-                }
-            } else {
-                copy(entry.path(), output_file).expect("Unable to copy file");
-            }
-        }
-    }
+                .expect("Unable to convert path"),
+        ])
+        .spawn()
+        .unwrap()
+        .wait().expect("Unable to build frontend assets using Webpack");
 }

config.windows.v6.toml

@@ -1,5 +1,6 @@
 installing_message = "Reminder: yuzu is an <b>experimental</b> emulator. Stuff will break!"
 hide_advanced = true
+new_tool = "https://github.com/yuzu-emu/liftinstall/releases/download/1.5/yuzu_install.exe"
 
 [[packages]]
 name = "yuzu Nightly"

config.windows.v7.toml

@@ -0,0 +1,30 @@
+installing_message = "Reminder: yuzu is an <b>experimental</b> emulator. Stuff will break!"
+hide_advanced = true
+
+[[packages]]
+name = "yuzu Nightly"
+description = "The nightly build of yuzu contains already reviewed and tested features."
+    [packages.source]
+    name = "github"
+    match = "^yuzu-windows-msvc-[0-9]*-[0-9a-f]*.zip$"
+        [packages.source.config]
+        repo = "yuzu-emu/yuzu-nightly"
+    [[packages.shortcuts]]
+    name = "yuzu Nightly"
+    relative_path = "nightly/yuzu.exe"
+    description = "Launch yuzu (Nightly version)"
+
+[[packages]]
+name = "yuzu Canary"
+description = "The canary build of yuzu has additional features that are still waiting on review."
+default = true
+    [packages.source]
+    name = "github"
+    match = "^yuzu-windows-msvc-[0-9]*-[0-9a-f]*.zip$"
+        [packages.source.config]
+        repo = "yuzu-emu/yuzu-canary"
+    [[packages.shortcuts]]
+    name = "yuzu Canary"
+    relative_path = "canary/yuzu.exe"
+    description = "Launch yuzu (Canary version)"
+

src/archives/mod.rs

@@ -10,13 +10,13 @@ use std::io::Read;
 use std::iter::Iterator;
 use std::path::PathBuf;
 
-use xz_decom;
+use xz2::read::XzDecoder;
 
 pub trait Archive<'a> {
     /// func: iterator value, max size, file name, file contents
     fn for_each(
         &mut self,
-        func: &mut FnMut(usize, Option<usize>, PathBuf, &mut Read) -> Result<(), String>,
+        func: &mut dyn FnMut(usize, Option<usize>, PathBuf, &mut dyn Read) -> Result<(), String>,
     ) -> Result<(), String>;
 }
 
@@ -27,7 +27,7 @@ struct ZipArchive<'a> {
 impl<'a> Archive<'a> for ZipArchive<'a> {
     fn for_each(
         &mut self,
-        func: &mut FnMut(usize, Option<usize>, PathBuf, &mut Read) -> Result<(), String>,
+        func: &mut dyn FnMut(usize, Option<usize>, PathBuf, &mut dyn Read) -> Result<(), String>,
     ) -> Result<(), String> {
         let max = self.archive.len();
 
@@ -49,13 +49,13 @@ impl<'a> Archive<'a> for ZipArchive<'a> {
 }
 
 struct TarArchive<'a> {
-    archive: UpstreamTarArchive<Box<Read + 'a>>,
+    archive: UpstreamTarArchive<Box<dyn Read + 'a>>,
 }
 
 impl<'a> Archive<'a> for TarArchive<'a> {
     fn for_each(
         &mut self,
-        func: &mut FnMut(usize, Option<usize>, PathBuf, &mut Read) -> Result<(), String>,
+        func: &mut dyn FnMut(usize, Option<usize>, PathBuf, &mut dyn Read) -> Result<(), String>,
     ) -> Result<(), String> {
         let entries = self
             .archive
@@ -83,7 +83,7 @@ impl<'a> Archive<'a> for TarArchive<'a> {
 }
 
 /// Reads the named archive with an archive implementation.
-pub fn read_archive<'a>(name: &str, data: &'a [u8]) -> Result<Box<Archive<'a> + 'a>, String> {
+pub fn read_archive<'a>(name: &str, data: &'a [u8]) -> Result<Box<dyn Archive<'a> + 'a>, String> {
     if name.ends_with(".zip") {
         // Decompress a .zip file
         let archive = UpstreamZipArchive::new(Cursor::new(data))
@@ -92,10 +92,13 @@ pub fn read_archive<'a>(name: &str, data: &'a [u8]) -> Result<Box<Archive<'a> +
         Ok(Box::new(ZipArchive { archive }))
     } else if name.ends_with(".tar.xz") {
         // Decompress a .tar.xz file
-        let decompressed_data = xz_decom::decompress(data)
-            .map_err(|x| format!("Failed to build decompressor: {:?}", x))?;
+        let mut decompresser = XzDecoder::new(data);
+        let mut decompressed_data = Vec::new();
+        decompresser
+            .read_to_end(&mut decompressed_data)
+            .map_err(|x| format!("Failed to decompress data: {:?}", x))?;
 
-        let decompressed_contents: Box<Read> = Box::new(Cursor::new(decompressed_data));
+        let decompressed_contents: Box<dyn Read> = Box::new(Cursor::new(decompressed_data));
 
         let tar = UpstreamTarArchive::new(decompressed_contents);
 

src/frontend/mod.rs

@@ -0,0 +1,29 @@
+//! frontend/mod.rs
+//!
+//! Provides the frontend interface, including HTTP server.
+
+use std::sync::{Arc, RwLock};
+
+use installer::InstallerFramework;
+use logging::LoggingErrors;
+
+pub mod rest;
+mod ui;
+
+/// Launches the main web server + UI. Returns when the framework has been consumed + web UI closed.
+pub fn launch(app_name: &str, is_launcher: bool, framework: InstallerFramework) {
+    let framework = Arc::new(RwLock::new(framework));
+
+    let (servers, address) = rest::server::spawn_servers(framework.clone());
+
+    ui::start_ui(app_name, &address, is_launcher);
+
+    // Explicitly hint that we want the servers instance until here.
+    drop(servers);
+
+    framework
+        .write()
+        .log_expect("Failed to write to framework to finalize")
+        .shutdown()
+        .log_expect("Failed to finalize framework");
+}

src/frontend/rest/assets.rs

@@ -2,7 +2,7 @@
 
 extern crate mime_guess;
 
-use assets::mime_guess::{get_mime_type, octet_stream};
+use self::mime_guess::{get_mime_type, octet_stream};
 
 macro_rules! include_files_as_assets {
     ( $target_match:expr, $( $file_name:expr ),* ) => {
@@ -34,18 +34,15 @@ pub fn file_from_string(file_path: &str) -> Option<(String, &'static [u8])> {
         file_path,
         "/index.html",
         "/favicon.ico",
-        "/logo.png",
-        "/how-to-open.png",
-        "/css/bulma.min.css",
-        "/css/main.css",
+        "/img/logo.png",
+        "/img/how-to-open.png",
+        "/css/app.css",
+        "/css/chunk-vendors.css",
         "/fonts/roboto-v18-latin-regular.eot",
         "/fonts/roboto-v18-latin-regular.woff",
         "/fonts/roboto-v18-latin-regular.woff2",
-        "/js/vue.min.js",
-        "/js/vue-router.min.js",
-        "/js/helpers.js",
-        "/js/views.js",
-        "/js/main.js"
+        "/js/chunk-vendors.js",
+        "/js/app.js"
     )?;
 
     Some((string_mime, contents))

src/frontend/rest/mod.rs

@@ -0,0 +1,7 @@
+//! frontend/rest/mod.rs
+//!
+//! Contains the main web server used within the application.
+
+mod assets;
+pub mod server;
+pub mod services;

src/frontend/rest/server.rs

@@ -0,0 +1,86 @@
+//! frontend/rest/server.rs
+//!
+//! Contains the over-arching server object + methods to manipulate it.
+
+use frontend::rest::services::WebService;
+
+use installer::InstallerFramework;
+
+use logging::LoggingErrors;
+
+use hyper::server::Http;
+
+use std::sync::{Arc, RwLock};
+
+use std::net::{SocketAddr, TcpListener, ToSocketAddrs};
+
+use std::thread;
+use std::thread::JoinHandle;
+
+/// Acts as a communication mechanism between the Hyper WebService and the rest of the
+/// application.
+pub struct WebServer {
+    _handle: JoinHandle<()>,
+}
+
+impl WebServer {
+    /// Creates a new web server with the specified address.
+    pub fn with_addr(
+        framework: Arc<RwLock<InstallerFramework>>,
+        addr: SocketAddr,
+    ) -> Result<Self, hyper::Error> {
+        let handle = thread::spawn(move || {
+            let server = Http::new()
+                .bind(&addr, move || Ok(WebService::new(framework.clone())))
+                .log_expect("Failed to bind to port");
+
+            server.run().log_expect("Failed to run HTTP server");
+        });
+
+        Ok(WebServer { _handle: handle })
+    }
+}
+
+/// Spawns a server instance on all local interfaces.
+///
+/// Returns server instances + http address of service running.
+pub fn spawn_servers(framework: Arc<RwLock<InstallerFramework>>) -> (Vec<WebServer>, String) {
+    // Firstly, allocate us an epidermal port
+    let target_port = {
+        let listener = TcpListener::bind("127.0.0.1:0")
+            .log_expect("At least one local address should be free");
+        listener
+            .local_addr()
+            .log_expect("Should be able to pull address from listener")
+            .port()
+    };
+
+    // Now, iterate over all ports
+    let addresses = "localhost:0"
+        .to_socket_addrs()
+        .log_expect("No localhost address found");
+
+    let mut instances = Vec::with_capacity(addresses.len());
+    let mut http_address = None;
+
+    // Startup HTTP server for handling the web view
+    for mut address in addresses {
+        address.set_port(target_port);
+
+        let server = WebServer::with_addr(framework.clone(), address)
+            .log_expect("Failed to bind to address");
+
+        info!("Spawning server instance @ {:?}", address);
+
+        http_address = Some(address);
+
+        instances.push(server);
+    }
+
+    let http_address = http_address.log_expect("No HTTP address found");
+
+    (
+        instances,
+        format!("http://localhost:{}", http_address.port()),
+    )
+}

src/frontend/rest/services/attributes.rs

@@ -0,0 +1,33 @@
+//! frontend/rest/services/attributes.rs
+//!
+//! The /api/attr call returns an executable script containing session variables.
+
+use frontend::rest::services::default_future;
+use frontend::rest::services::encapsulate_json;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::Response;
+use frontend::rest::services::WebService;
+
+use hyper::header::{ContentLength, ContentType};
+
+use logging::LoggingErrors;
+
+pub fn handle(service: &WebService, _req: Request) -> Future {
+    let framework = service.get_framework_read();
+
+    let file = encapsulate_json(
+        "base_attributes",
+        &framework
+            .base_attributes
+            .to_json_str()
+            .log_expect("Failed to render JSON representation of config"),
+    );
+
+    default_future(
+        Response::new()
+            .with_header(ContentLength(file.len() as u64))
+            .with_header(ContentType::json())
+            .with_body(file),
+    )
+}

src/frontend/rest/services/config.rs

@@ -0,0 +1,84 @@
+//! frontend/rest/services/config.rs
+//!
+//! The /api/config call returns the current installer framework configuration.
+//!
+//! This endpoint should be usable directly from a <script> tag during loading.
+
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::Response;
+use frontend::rest::services::WebService;
+
+use hyper::header::{ContentLength, ContentType};
+
+use logging::LoggingErrors;
+
+use config::Config;
+
+use http::build_async_client;
+
+use futures::stream::Stream;
+use futures::Future as _;
+
+pub fn handle(service: &WebService, _req: Request) -> Future {
+    let framework_url = {
+        service
+            .get_framework_read()
+            .base_attributes
+            .target_url
+            .clone()
+    };
+
+    info!("Downloading configuration from {:?}...", framework_url);
+
+    let framework = service.framework.clone();
+
+    // Hyper doesn't allow for clients to do sync network operations in a async future.
+    // This smallish pipeline joins the two together.
+    Box::new(
+        build_async_client()
+            .log_expect("Failed to build async client")
+            .get(&framework_url)
+            .send()
+            .map_err(|x| {
+                error!("HTTP error while downloading configuration file: {:?}", x);
+                hyper::Error::Incomplete
+            })
+            .and_then(|x| {
+                x.into_body().concat2().map_err(|x| {
+                    error!("HTTP error while parsing configuration file: {:?}", x);
+                    hyper::Error::Incomplete
+                })
+            })
+            .and_then(move |x| {
+                let x = String::from_utf8(x.to_vec()).map_err(|x| {
+                    error!("UTF-8 error while parsing configuration file: {:?}", x);
+                    hyper::Error::Incomplete
+                })?;
+
+                let config = Config::from_toml_str(&x).map_err(|x| {
+                    error!("Serde error while parsing configuration file: {:?}", x);
+                    hyper::Error::Incomplete
+                })?;
+
+                let mut framework = framework
+                    .write()
+                    .log_expect("Failed to get write lock for framework");
+
+                framework.config = Some(config);
+
+                info!("Configuration file downloaded successfully.");
+
+                let file = framework
+                    .get_config()
+                    .log_expect("Config should be loaded by now")
+                    .to_json_str()
+                    .log_expect("Failed to render JSON representation of config");
+
+                Ok(Response::new()
+                    .with_header(ContentLength(file.len() as u64))
+                    .with_header(ContentType::json())
+                    .with_body(file))
+            }),
+    )
+}

src/frontend/rest/services/dark_mode.rs

@@ -0,0 +1,27 @@
+//! frontend/rest/services/dark_mode.rs
+//!
+//! This call returns if dark mode is enabled on the system currently.
+
+use frontend::rest::services::default_future;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::Response;
+use frontend::rest::services::WebService;
+
+use hyper::header::{ContentLength, ContentType};
+
+use logging::LoggingErrors;
+
+use native::is_dark_mode_active;
+
+pub fn handle(_service: &WebService, _req: Request) -> Future {
+    let file = serde_json::to_string(&is_dark_mode_active())
+        .log_expect("Failed to render JSON payload of installation status object");
+
+    default_future(
+        Response::new()
+            .with_header(ContentLength(file.len() as u64))
+            .with_header(ContentType::json())
+            .with_body(file),
+    )
+}

src/frontend/rest/services/default_path.rs

@@ -0,0 +1,35 @@
+//! frontend/rest/services/default_path.rs
+//!
+//! The /api/default-path returns the default path for the application to install into.
+
+use frontend::rest::services::default_future;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::Response;
+use frontend::rest::services::WebService;
+
+use hyper::header::{ContentLength, ContentType};
+
+use logging::LoggingErrors;
+
+/// Struct used by serde to send a JSON payload to the client containing an optional value.
+#[derive(Serialize)]
+struct FileSelection {
+    path: Option<String>,
+}
+
+pub fn handle(service: &WebService, _req: Request) -> Future {
+    let path = { service.get_framework_read().get_default_path() };
+
+    let response = FileSelection { path };
+
+    let file = serde_json::to_string(&response)
+        .log_expect("Failed to render JSON payload of default path object");
+
+    default_future(
+        Response::new()
+            .with_header(ContentLength(file.len() as u64))
+            .with_header(ContentType::json())
+            .with_body(file),
+    )
+}

src/frontend/rest/services/exit.rs

@@ -0,0 +1,32 @@
+//! frontend/rest/services/exit.rs
+//!
+//! The /api/exit closes down the application.
+
+use frontend::rest::services::default_future;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::Response;
+use frontend::rest::services::WebService;
+
+use hyper::header::ContentType;
+use hyper::StatusCode;
+
+use std::process::exit;
+
+pub fn handle(service: &WebService, _req: Request) -> Future {
+    match service.get_framework_write().shutdown() {
+        Ok(_) => {
+            exit(0);
+        }
+        Err(e) => {
+            error!("Failed to complete framework shutdown: {:?}", e);
+
+            default_future(
+                Response::new()
+                    .with_status(StatusCode::InternalServerError)
+                    .with_header(ContentType::plaintext())
+                    .with_body(format!("Failed to complete framework shutdown - {}", e)),
+            )
+        }
+    }
+}

src/frontend/rest/services/install.rs

@@ -0,0 +1,70 @@
+//! frontend/rest/services/install.rs
+//!
+//! The /api/install call installs a set of packages dictated by a POST request.
+
+use frontend::rest::services::stream_progress;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::WebService;
+
+use logging::LoggingErrors;
+
+use installer::InstallMessage;
+
+use futures::future::Future as _;
+use futures::stream::Stream;
+
+use url::form_urlencoded;
+
+use std::collections::HashMap;
+
+pub fn handle(service: &WebService, req: Request) -> Future {
+    let framework = service.framework.clone();
+
+    Box::new(req.body().concat2().map(move |b| {
+        let results = form_urlencoded::parse(b.as_ref())
+            .into_owned()
+            .collect::<HashMap<String, String>>();
+
+        let mut to_install = Vec::new();
+        let mut path: Option<String> = None;
+
+        // Transform results into just an array of stuff to install
+        for (key, value) in &results {
+            if key == "path" {
+                path = Some(value.to_owned());
+                continue;
+            }
+
+            if value == "true" {
+                to_install.push(key.to_owned());
+            }
+        }
+
+        // The frontend always provides this
+        let path =
+            path.log_expect("No path specified by frontend when one should have already existed");
+
+        stream_progress(move |sender| {
+            let mut framework = framework
+                .write()
+                .log_expect("InstallerFramework has been dirtied");
+
+            let new_install = !framework.preexisting_install;
+            if new_install {
+                framework.set_install_dir(&path);
+            }
+
+            if let Err(v) = framework.install(to_install, &sender, new_install) {
+                error!("Install error occurred: {:?}", v);
+                if let Err(v) = sender.send(InstallMessage::Error(v)) {
+                    error!("Failed to send install error: {:?}", v);
+                }
+            }
+
+            if let Err(v) = sender.send(InstallMessage::EOF) {
+                error!("Failed to send EOF to client: {:?}", v);
+            }
+        })
+    }))
+}

src/frontend/rest/services/installation_status.rs

@@ -0,0 +1,32 @@
+//! frontend/rest/services/installation_status.rs
+//!
+//! The /api/installation-status call returns metadata relating to the current status of
+//! the installation.
+//!
+//! e.g. if the application is in maintenance mode
+
+use frontend::rest::services::default_future;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::Response;
+use frontend::rest::services::WebService;
+
+use hyper::header::{ContentLength, ContentType};
+
+use logging::LoggingErrors;
+
+pub fn handle(service: &WebService, _req: Request) -> Future {
+    let framework = service.get_framework_read();
+
+    let response = framework.get_installation_status();
+
+    let file = serde_json::to_string(&response)
+        .log_expect("Failed to render JSON payload of installation status object");
+
+    default_future(
+        Response::new()
+            .with_header(ContentLength(file.len() as u64))
+            .with_header(ContentType::json())
+            .with_body(file),
+    )
+}

src/frontend/rest/services/mod.rs

@@ -0,0 +1,150 @@
+//! frontend/rest/services/mod.rs
+//!
+//! Provides all services used by the REST server.
+
+use std::sync::{Arc, RwLock, RwLockReadGuard, RwLockWriteGuard};
+
+use installer::{InstallMessage, InstallerFramework};
+
+use hyper::server::Service;
+use hyper::{Method, StatusCode};
+
+use logging::LoggingErrors;
+
+use std::sync::mpsc::{channel, Sender};
+
+use std::thread;
+
+use hyper::header::ContentType;
+
+use futures::future::Future as _;
+use futures::sink::Sink;
+
+mod attributes;
+mod config;
+mod default_path;
+mod dark_mode;
+mod exit;
+mod install;
+mod installation_status;
+mod packages;
+mod static_files;
+mod uninstall;
+mod update_updater;
+
+/// Expected incoming Request format from Hyper.
+pub type Request = hyper::server::Request;
+
+/// Completed response type returned by the server.
+pub type Response = hyper::server::Response;
+
+/// Error type returned by the server.
+pub type Error = hyper::Error;
+
+/// The return type used by function calls to the web server.
+pub type Future = Box<dyn futures::Future<Item = Response, Error = Error>>;
+
+/// If advanced functionality is not needed, return a default instant future.
+pub fn default_future(response: Response) -> Future {
+    Box::new(futures::future::ok(response))
+}
+
+/// Encapsulates JSON as a injectable Javascript script.
+pub fn encapsulate_json(field_name: &str, json: &str) -> String {
+    format!("var {} = {};", field_name, json)
+}
+
+/// Streams messages from a specified task to the client in a thread.
+pub fn stream_progress<F: 'static>(function: F) -> Response
+where
+    F: FnOnce(Sender<InstallMessage>) -> () + Send,
+{
+    let (sender, receiver) = channel();
+    let (tx, rx) = hyper::Body::pair();
+
+    // Startup a thread to do this operation for us
+    thread::spawn(move || function(sender));
+
+    // Spawn a thread for transforming messages to chunk messages
+    thread::spawn(move || {
+        let mut tx = tx;
+        loop {
+            let response = receiver
+                .recv()
+                .log_expect("Failed to receive message from runner thread");
+
+            if let InstallMessage::EOF = response {
+                break;
+            }
+
+            let mut response = serde_json::to_string(&response)
+                .log_expect("Failed to render JSON logging response payload");
+            response.push('\n');
+            tx = tx
+                .send(Ok(response.into_bytes().into()))
+                .wait()
+                .log_expect("Failed to write JSON response payload to client");
+        }
+    });
+
+    Response::new()
+        .with_header(ContentType::plaintext())
+        .with_body(rx)
+}
+
+/// Holds internal state for a single Hyper instance. Multiple will exist.
+pub struct WebService {
+    framework: Arc<RwLock<InstallerFramework>>,
+}
+
+impl WebService {
+    /// Returns an immutable reference to the framework. May block.
+    pub fn get_framework_read(&self) -> RwLockReadGuard<InstallerFramework> {
+        self.framework
+            .read()
+            .log_expect("InstallerFramework has been dirtied")
+    }
+
+    /// Returns an immutable reference to the framework. May block.
+    pub fn get_framework_write(&self) -> RwLockWriteGuard<InstallerFramework> {
+        self.framework
+            .write()
+            .log_expect("InstallerFramework has been dirtied")
+    }
+
+    /// Creates a new WebService instance. Multiple are likely going to exist at once,
+    /// so create a lock to hold this.
+    pub fn new(framework: Arc<RwLock<InstallerFramework>>) -> WebService {
+        WebService { framework }
+    }
+}
+
+impl Service for WebService {
+    type Request = Request;
+    type Response = Response;
+    type Error = Error;
+    type Future = Future;
+
+    fn call(&self, req: Self::Request) -> Self::Future {
+        let method = req.method().clone();
+        let path = req.path().to_string();
+
+        match (method, path.as_str()) {
+            (Method::Get, "/api/attrs") => attributes::handle(self, req),
+            (Method::Get, "/api/config") => config::handle(self, req),
+            (Method::Get, "/api/dark-mode") => dark_mode::handle(self, req),
+            (Method::Get, "/api/default-path") => default_path::handle(self, req),
+            (Method::Get, "/api/exit") => exit::handle(self, req),
+            (Method::Get, "/api/packages") => packages::handle(self, req),
+            (Method::Get, "/api/installation-status") => installation_status::handle(self, req),
+            (Method::Post, "/api/start-install") => install::handle(self, req),
+            (Method::Post, "/api/uninstall") => uninstall::handle(self, req),
+            (Method::Post, "/api/update-updater") => update_updater::handle(self, req),
+            (Method::Get, _) => static_files::handle(self, req),
+            e => {
+                info!("Returned 404 for {:?}", e);
+                default_future(Response::new().with_status(StatusCode::NotFound))
+            }
+        }
+    }
+}

src/frontend/rest/services/packages.rs

@@ -0,0 +1,31 @@
+//! frontend/rest/services/packages.rs
+//!
+//! The /api/packages call returns all the currently installed packages.
+
+use frontend::rest::services::default_future;
+use frontend::rest::services::encapsulate_json;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::Response;
+use frontend::rest::services::WebService;
+
+use hyper::header::{ContentLength, ContentType};
+
+use logging::LoggingErrors;
+
+pub fn handle(service: &WebService, _req: Request) -> Future {
+    let framework = service.get_framework_read();
+
+    let file = encapsulate_json(
+        "packages",
+        &serde_json::to_string(&framework.database)
+            .log_expect("Failed to render JSON representation of database"),
+    );
+
+    default_future(
+        Response::new()
+            .with_header(ContentLength(file.len() as u64))
+            .with_header(ContentType::json())
+            .with_body(file),
+    )
+}

src/frontend/rest/services/static_files.rs

@@ -0,0 +1,42 @@
+//! frontend/rest/services/static_files.rs
+//!
+//! The static files call returns static files embedded within the executable.
+//!
+//! e.g. index.html, main.js, ...
+
+use frontend::rest::assets;
+
+use frontend::rest::services::default_future;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::Response;
+use frontend::rest::services::WebService;
+
+use hyper::header::{ContentLength, ContentType};
+use hyper::StatusCode;
+
+use logging::LoggingErrors;
+
+pub fn handle(_service: &WebService, req: Request) -> Future {
+    // At this point, we have a web browser client. Search for a index page
+    // if needed
+    let mut path: String = req.path().to_owned();
+    if path.ends_with('/') {
+        path += "index.html";
+    }
+
+    default_future(match assets::file_from_string(&path) {
+        Some((content_type, file)) => {
+            let content_type = ContentType(
+                content_type
+                    .parse()
+                    .log_expect("Failed to parse content type into correct representation"),
+            );
+            Response::new()
+                .with_header(ContentLength(file.len() as u64))
+                .with_header(content_type)
+                .with_body(file)
+        }
+        None => Response::new().with_status(StatusCode::NotFound),
+    })
+}

src/frontend/rest/services/uninstall.rs

@@ -0,0 +1,34 @@
+//! frontend/rest/services/uninstall.rs
+//!
+//! The /api/uninstall call uninstalls all packages.
+
+use frontend::rest::services::default_future;
+use frontend::rest::services::stream_progress;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::WebService;
+
+use logging::LoggingErrors;
+
+use installer::InstallMessage;
+
+pub fn handle(service: &WebService, _req: Request) -> Future {
+    let framework = service.framework.clone();
+
+    default_future(stream_progress(move |sender| {
+        let mut framework = framework
+            .write()
+            .log_expect("InstallerFramework has been dirtied");
+
+        if let Err(v) = framework.uninstall(&sender) {
+            error!("Uninstall error occurred: {:?}", v);
+            if let Err(v) = sender.send(InstallMessage::Error(v)) {
+                error!("Failed to send uninstall error: {:?}", v);
+            };
+        }
+
+        if let Err(v) = sender.send(InstallMessage::EOF) {
+            error!("Failed to send EOF to client: {:?}", v);
+        }
+    }))
+}

src/frontend/rest/services/update_updater.rs

@@ -0,0 +1,34 @@
+//! frontend/rest/services/update_updater.rs
+//!
+//! The /api/update-updater call attempts to update the currently running updater.
+
+use frontend::rest::services::default_future;
+use frontend::rest::services::stream_progress;
+use frontend::rest::services::Future;
+use frontend::rest::services::Request;
+use frontend::rest::services::WebService;
+
+use logging::LoggingErrors;
+
+use installer::InstallMessage;
+
+pub fn handle(service: &WebService, _req: Request) -> Future {
+    let framework = service.framework.clone();
+
+    default_future(stream_progress(move |sender| {
+        let mut framework = framework
+            .write()
+            .log_expect("InstallerFramework has been dirtied");
+
+        if let Err(v) = framework.update_updater(&sender) {
+            error!("Self-update error occurred: {:?}", v);
+            if let Err(v) = sender.send(InstallMessage::Error(v)) {
+                error!("Failed to send self-update error: {:?}", v);
+            };
+        }
+
+        if let Err(v) = sender.send(InstallMessage::EOF) {
+            error!("Failed to send EOF to client: {:?}", v);
+        }
+    }))
+}

src/frontend/ui/mod.rs

@@ -0,0 +1,71 @@
+//! frontend/ui/mod.rs
+//!
+//! Provides a web-view UI.
+
+use web_view::Content;
+
+use logging::LoggingErrors;
+
+use log::Level;
+
+#[derive(Deserialize, Debug)]
+enum CallbackType {
+    SelectInstallDir { callback_name: String },
+    Log { msg: String, kind: String },
+    Test {}
+}
+
+/// Starts the main web UI. Will return when UI is closed.
+pub fn start_ui(app_name: &str, http_address: &str, is_launcher: bool) {
+    let size = if is_launcher { (600, 300) } else { (1024, 500) };
+
+    info!("Spawning web view instance");
+
+    web_view::builder()
+        .title(&format!("{} Installer", app_name))
+        .content(Content::Url(http_address))
+        .size(size.0, size.1)
+        .resizable(false)
+        .debug(false)
+        .user_data(())
+        .invoke_handler(|wv, msg| {
+            let mut cb_result = Ok(());
+            let command: CallbackType =
+                serde_json::from_str(msg).log_expect(&format!("Unable to parse string: {:?}", msg));
+
+            debug!("Incoming payload: {:?}", command);
+
+            match command {
+                CallbackType::SelectInstallDir { callback_name } => {
+                    let result = wv
+                        .dialog()
+                        .choose_directory("Select a install directory...", "");
+
+                    if let Ok(Some(new_path)) = result {
+                        if new_path.to_string_lossy().len() > 0 {
+                            let result = serde_json::to_string(&new_path)
+                                .log_expect("Unable to serialize response");
+                            let command = format!("{}({});", callback_name, result);
+                            debug!("Injecting response: {}", command);
+                            cb_result = wv.eval(&command);
+                        }
+                    }
+                }
+                CallbackType::Log { msg, kind } => {
+                    let kind = match kind.as_ref() {
+                        "info" | "log" => Level::Info,
+                        "warn" => Level::Warn,
+                        "error" => Level::Error,
+                        _ => Level::Error,
+                    };
+
+                    log!(target: "liftinstall::frontend::js", kind, "{}", msg);
+                }
+                CallbackType::Test {} => {}
+            }
+
+            cb_result
+        })
+        .run()
+        .log_expect("Unable to launch Web UI!");
+}

src/http.rs

@@ -7,6 +7,7 @@ use reqwest::header::CONTENT_LENGTH;
 use std::io::Read;
 use std::time::Duration;
 
+use reqwest::async::Client as AsyncClient;
 use reqwest::Client;
 
 /// Asserts that a URL is valid HTTPS, else returns an error.
@@ -14,7 +15,7 @@ pub fn assert_ssl(url: &str) -> Result<(), String> {
     if url.starts_with("https://") {
         Ok(())
     } else {
-        Err(format!("Specified URL was not https"))
+        Err("Specified URL was not https".to_string())
     }
 }
 
@@ -26,18 +27,12 @@ pub fn build_client() -> Result<Client, String> {
         .map_err(|x| format!("Unable to build client: {:?}", x))
 }
 
-/// Downloads a text file from the specified URL.
-pub fn download_text(url: &str) -> Result<String, String> {
-    assert_ssl(url)?;
-
-    let mut client = build_client()?
-        .get(url)
-        .send()
-        .map_err(|x| format!("Failed to GET resource: {:?}", x))?;
-
-    client
-        .text()
-        .map_err(|v| format!("Failed to get text from resource: {:?}", v))
+/// Builds a customised async HTTP client.
+pub fn build_async_client() -> Result<AsyncClient, String> {
+    AsyncClient::builder()
+        .timeout(Duration::from_secs(8))
+        .build()
+        .map_err(|x| format!("Unable to build client: {:?}", x))
 }
 
 /// Streams a file from a HTTP server.

src/installer.rs

@@ -18,8 +18,8 @@ use std::sync::mpsc::Sender;
 use std::io::copy;
 use std::io::Cursor;
 
-use std::process::exit;
 use std::process::Command;
+use std::process::{exit, Stdio};
 
 use config::BaseAttributes;
 use config::Config;
@@ -40,7 +40,9 @@ use std::fs::remove_file;
 
 use http;
 
-use number_prefix::{decimal_prefix, Prefixed, Standalone};
+use number_prefix::{NumberPrefix, Prefixed, Standalone};
+
+use native;
 
 /// A message thrown during the installation of packages.
 #[derive(Serialize)]
@@ -105,14 +107,14 @@ pub struct LocalInstallation {
 
 macro_rules! declare_messenger_callback {
     ($target:expr) => {
-        &|msg: &TaskMessage| match msg {
-            &TaskMessage::DisplayMessage(msg, progress) => {
+        &|msg: &TaskMessage| match *msg {
+            TaskMessage::DisplayMessage(msg, progress) => {
                 if let Err(v) = $target.send(InstallMessage::Status(msg.to_string(), progress as _))
                 {
                     error!("Failed to submit queue message: {:?}", v);
                 }
             }
-            &TaskMessage::PackageInstalled => {
+            TaskMessage::PackageInstalled => {
                 if let Err(v) = $target.send(InstallMessage::PackageInstalled) {
                     error!("Failed to submit queue message: {:?}", v);
                 }
@@ -264,11 +266,11 @@ impl InstallerFramework {
             };
 
             // Pretty print data volumes
-            let pretty_current = match decimal_prefix(downloaded as f64) {
+            let pretty_current = match NumberPrefix::decimal(downloaded as f64) {
                 Standalone(bytes) => format!("{} bytes", bytes),
                 Prefixed(prefix, n) => format!("{:.0} {}B", n, prefix),
             };
-            let pretty_total = match decimal_prefix(size as f64) {
+            let pretty_total = match NumberPrefix::decimal(size as f64) {
                 Standalone(bytes) => format!("{} bytes", bytes),
                 Prefixed(prefix, n) => format!("{:.0} {}B", n, prefix),
             };
@@ -328,7 +330,8 @@ impl InstallerFramework {
                 x.to_str()
                     .log_expect("Unable to convert argument to String")
                     .to_string()
-            }).collect();
+            })
+            .collect();
 
         {
             let new_app_file = match File::create(&args_file) {
@@ -393,6 +396,29 @@ impl InstallerFramework {
         }
     }
 
+    /// Shuts down the installer instance.
+    pub fn shutdown(&mut self) -> Result<(), String> {
+        info!("Shutting down installer framework...");
+
+        if let Some(ref v) = self.launcher_path.take() {
+            info!("Launching {:?}", v);
+
+            Command::new(v)
+                .stdout(Stdio::null())
+                .stderr(Stdio::null())
+                .spawn()
+                .map_err(|x| format!("Unable to start application: {:?}", x))?;
+        }
+
+        if self.burn_after_exit {
+            info!("Requesting that self be deleted after exit.");
+            native::burn_on_exit(&self.base_attributes.name);
+            self.burn_after_exit = false;
+        }
+
+        Ok(())
+    }
+
     /// Creates a new instance of the Installer Framework with a specified Config.
     pub fn new(attrs: BaseAttributes) -> Self {
         InstallerFramework {

src/logging.rs

@@ -17,7 +17,8 @@ pub fn setup_logger(file_name: String) -> Result<(), fern::InitError> {
                 record.level(),
                 message
             ))
-        }).level(log::LevelFilter::Info)
+        })
+        .level(log::LevelFilter::Info)
         .chain(io::stdout())
         .chain(fern::log_file(file_name)?)
         .apply()?;

src/main.rs

@@ -7,9 +7,6 @@
 #![deny(unsafe_code)]
 #![deny(missing_docs)]
 
-#[cfg(windows)]
-extern crate nfd;
-
 extern crate web_view;
 
 extern crate futures;
@@ -30,7 +27,7 @@ extern crate semver;
 
 extern crate dirs;
 extern crate tar;
-extern crate xz_decom;
+extern crate xz2;
 extern crate zip;
 
 extern crate fern;
@@ -40,66 +37,45 @@ extern crate log;
 extern crate chrono;
 
 extern crate clap;
-
+#[cfg(windows)]
 extern crate winapi;
+#[cfg(windows)]
+extern crate widestring;
+
+#[cfg(not(windows))]
+extern crate slug;
+#[cfg(not(windows))]
+extern crate sysinfo;
 
 mod archives;
-mod assets;
 mod config;
+mod frontend;
 mod http;
 mod installer;
 mod logging;
 mod native;
-mod rest;
+mod self_update;
 mod sources;
 mod tasks;
 
-use web_view::*;
-
 use installer::InstallerFramework;
 
-#[cfg(windows)]
-use nfd::Response;
-
-use rest::WebServer;
-
-use std::net::TcpListener;
-use std::net::ToSocketAddrs;
-
-use std::sync::Arc;
-use std::sync::RwLock;
-
-use std::path::PathBuf;
-
-use std::process::exit;
-use std::process::Command;
-use std::{thread, time};
-
-use std::fs::remove_file;
-use std::fs::File;
-
 use logging::LoggingErrors;
 
 use clap::App;
 use clap::Arg;
-use log::Level;
 
 use config::BaseAttributes;
 
 static RAW_CONFIG: &'static str = include_str!(concat!(env!("OUT_DIR"), "/bootstrap.toml"));
 
-#[derive(Deserialize, Debug)]
-enum CallbackType {
-    SelectInstallDir { callback_name: String },
-    Log { msg: String, kind: String },
-}
-
 fn main() {
     let config = BaseAttributes::from_toml_str(RAW_CONFIG).expect("Config file could not be read");
 
     logging::setup_logger(format!("{}_installer.log", config.name))
         .expect("Unable to setup logging!");
 
+    // Parse CLI arguments
     let app_name = config.name.clone();
 
     let app_about = format!("An interactive installer for {}", app_name);
@@ -112,7 +88,8 @@ fn main() {
                 .value_name("TARGET")
                 .help("Launches the specified executable after checking for updates")
                 .takes_value(true),
-        ).arg(
+        )
+        .arg(
             Arg::with_name("swap")
                 .long("swap")
                 .value_name("TARGET")
@@ -125,100 +102,19 @@ fn main() {
 
     info!("{} installer", app_name);
 
+    // Handle self-updating if needed
     let current_exe = std::env::current_exe().log_expect("Current executable could not be found");
     let current_path = current_exe
         .parent()
         .log_expect("Parent directory of executable could not be found");
 
-    // Check to see if we are currently in a self-update
-    if let Some(to_path) = matches.value_of("swap") {
-        let to_path = PathBuf::from(to_path);
-
-        // Sleep a little bit to allow Windows to close the previous file handle
-        thread::sleep(time::Duration::from_millis(3000));
-
-        info!(
-            "Swapping installer from {} to {}",
-            current_exe.display(),
-            to_path.display()
-        );
-
-        // Attempt it a few times because Windows can hold a lock
-        for i in 1..=5 {
-            let swap_result = if cfg!(windows) {
-                use std::fs::copy;
-
-                copy(&current_exe, &to_path).map(|_x| ())
-            } else {
-                use std::fs::rename;
-
-                rename(&current_exe, &to_path)
-            };
-
-            match swap_result {
-                Ok(_) => break,
-                Err(e) => {
-                    if i < 5 {
-                        info!("Copy attempt failed: {:?}, retrying in 3 seconds.", e);
-                        thread::sleep(time::Duration::from_millis(3000));
-                    } else {
-                        let _: () = Err(e).log_expect("Copying new binary failed");
-                    }
-                }
-            }
-        }
-
-        Command::new(to_path)
-            .spawn()
-            .log_expect("Unable to start child process");
-
-        exit(0);
+    self_update::perform_swap(&current_exe, matches.value_of("swap"));
+    if let Some(new_matches) = self_update::check_args(reinterpret_app, current_path) {
+        matches = new_matches;
     }
+    self_update::cleanup(current_path);
 
-    // If we just finished a update, we need to inject our previous command line arguments
-    let args_file = current_path.join("args.json");
-
-    if args_file.exists() {
-        let database: Vec<String> = {
-            let metadata_file =
-                File::open(&args_file).log_expect("Unable to open args file handle");
-
-            serde_json::from_reader(metadata_file).log_expect("Unable to read metadata file")
-        };
-
-        matches = reinterpret_app.get_matches_from(database);
-
-        info!("Parsed command line arguments from original instance");
-        remove_file(args_file).log_expect("Unable to clean up args file");
-    }
-
-    // Cleanup any remaining new maintenance tool instances if they exist
-    if cfg!(windows) {
-        let updater_executable = current_path.join("maintenancetool_new.exe");
-
-        if updater_executable.exists() {
-            // Sleep a little bit to allow Windows to close the previous file handle
-            thread::sleep(time::Duration::from_millis(3000));
-
-            // Attempt it a few times because Windows can hold a lock
-            for i in 1..=5 {
-                let swap_result = remove_file(&updater_executable);
-                match swap_result {
-                    Ok(_) => break,
-                    Err(e) => {
-                        if i < 5 {
-                            info!("Cleanup attempt failed: {:?}, retrying in 3 seconds.", e);
-                            thread::sleep(time::Duration::from_millis(3000));
-                        } else {
-                            warn!("Deleting temp binary failed after 5 attempts: {:?}", e);
-                        }
-                    }
-                }
-            }
-        }
-    }
-
-    // Load in metadata as to learn about the environment
+    // Load in metadata + setup the installer framework
     let metadata_file = current_path.join("metadata.json");
     let mut framework = if metadata_file.exists() {
         info!("Using pre-existing metadata file: {:?}", metadata_file);
@@ -236,97 +132,6 @@ fn main() {
         false
     };
 
-    // Firstly, allocate us an epidermal port
-    let target_port = {
-        let listener = TcpListener::bind("127.0.0.1:0")
-            .log_expect("At least one local address should be free");
-        listener
-            .local_addr()
-            .log_expect("Should be able to pull address from listener")
-            .port()
-    };
-
-    // Now, iterate over all ports
-    let addresses = "localhost:0"
-        .to_socket_addrs()
-        .log_expect("No localhost address found");
-
-    let mut servers = Vec::new();
-    let mut http_address = None;
-
-    let framework = Arc::new(RwLock::new(framework));
-
-    // Startup HTTP server for handling the web view
-    for mut address in addresses {
-        address.set_port(target_port);
-
-        let server = WebServer::with_addr(framework.clone(), address)
-            .log_expect("Failed to bind to address");
-
-        info!("Server: {:?}", address);
-
-        http_address = Some(address);
-
-        servers.push(server);
-    }
-
-    let http_address = http_address.log_expect("No HTTP address found");
-
-    let http_address = format!("http://localhost:{}", http_address.port());
-
-    // Init the web view
-    let size = if is_launcher { (600, 300) } else { (1024, 500) };
-
-    let resizable = false;
-    let debug = true;
-
-    run(
-        &format!("{} Installer", app_name),
-        Content::Url(http_address),
-        Some(size),
-        resizable,
-        debug,
-        |_| {},
-        |wv, msg, _| {
-            let command: CallbackType =
-                serde_json::from_str(msg).log_expect(&format!("Unable to parse string: {:?}", msg));
-
-            debug!("Incoming payload: {:?}", command);
-
-            match command {
-                CallbackType::SelectInstallDir { callback_name } => {
-                    #[cfg(windows)]
-                    let result = match nfd::open_pick_folder(None)
-                        .log_expect("Unable to open folder dialog")
-                    {
-                        Response::Okay(v) => v,
-                        _ => return,
-                    };
-
-                    #[cfg(not(windows))]
-                    let result =
-                        wv.dialog(Dialog::ChooseDirectory, "Select a install directory...", "");
-
-                    if !result.is_empty() {
-                        let result = serde_json::to_string(&result)
-                            .log_expect("Unable to serialize response");
-                        let command = format!("{}({});", callback_name, result);
-                        debug!("Injecting response: {}", command);
-                        wv.eval(&command);
-                    }
-                }
-                CallbackType::Log { msg, kind } => {
-                    let kind = match kind.as_ref() {
-                        "info" | "log" => Level::Info,
-                        "warn" => Level::Warn,
-                        "error" => Level::Error,
-                        _ => Level::Error,
-                    };
-
-                    log!(target: "liftinstall::frontend-js", kind, "{}", msg);
-                }
-            }
-        },
-        (),
-    );
+    // Start up the UI
+    frontend::launch(&app_name, is_launcher, framework);
 }

src/native/interop.cpp

@@ -2,72 +2,95 @@
  * Misc interop helpers.
 **/
 
+// Explicitly use the Unicode version of the APIs
+#ifndef UNICODE
+#define UNICODE
+#endif
+
+#ifndef _UNICODE
+#define _UNICODE
+#endif
+
 #include "windows.h"
 #include "winnls.h"
 #include "shobjidl.h"
 #include "objbase.h"
 #include "objidl.h"
 #include "shlguid.h"
+#include "shlobj.h"
+
+// https://stackoverflow.com/questions/52101827/windows-10-getsyscolor-does-not-get-dark-ui-color-theme
+extern "C" int isDarkThemeActive()
+{
+    DWORD type;
+    DWORD value;
+    DWORD count = 4;
+    LSTATUS st = RegGetValue(
+        HKEY_CURRENT_USER,
+        TEXT("Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize"),
+        TEXT("AppsUseLightTheme"),
+        RRF_RT_REG_DWORD,
+        &type,
+        &value,
+        &count);
+    if (st == ERROR_SUCCESS && type == REG_DWORD)
+        return value == 0;
+    return false;
+}
 
 extern "C" int saveShortcut(
-    const char *shortcutPath,
-    const char *description,
-    const char *path,
-    const char *args,
-    const char *workingDir) {
-    char* errStr = NULL;
+    const wchar_t *shortcutPath,
+    const wchar_t *description,
+    const wchar_t *path,
+    const wchar_t *args,
+    const wchar_t *workingDir)
+{
+    char *errStr = NULL;
     HRESULT h;
-    IShellLink* shellLink = NULL;
-    IPersistFile* persistFile = NULL;
-
-#ifdef _WIN64
-    wchar_t wName[MAX_PATH+1];
-#else
-    WORD wName[MAX_PATH+1];
-#endif
-
-    int id;
+    IShellLink *shellLink = NULL;
+    IPersistFile *persistFile = NULL;
 
     // Initialize the COM library
     h = CoInitialize(NULL);
-    if (FAILED(h)) {
+    if (FAILED(h))
+    {
         errStr = "Failed to initialize COM library";
         goto err;
     }
 
-    h = CoCreateInstance( CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
-            IID_IShellLink, (PVOID*)&shellLink );
-    if (FAILED(h)) {
+    h = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
+                         IID_IShellLink, (PVOID *)&shellLink);
+    if (FAILED(h))
+    {
         errStr = "Failed to create IShellLink";
         goto err;
     }
 
-    h = shellLink->QueryInterface(IID_IPersistFile, (PVOID*)&persistFile);
-    if (FAILED(h)) {
+    h = shellLink->QueryInterface(IID_IPersistFile, (PVOID *)&persistFile);
+    if (FAILED(h))
+    {
         errStr = "Failed to get IPersistFile";
         goto err;
     }
 
-    //Append the shortcut name to the folder
-    MultiByteToWideChar(CP_UTF8,0,shortcutPath,-1,wName,MAX_PATH);
-
     // Load the file if it exists, to get the values for anything
     // that we do not set.  Ignore errors, such as if it does not exist.
-    h = persistFile->Load(wName, 0);
+    h = persistFile->Load(shortcutPath, 0);
 
     // Set the fields for which the application has set a value
-    if (description!=NULL)
+    if (description != NULL)
         shellLink->SetDescription(description);
-    if (path!=NULL)
+    if (path != NULL)
         shellLink->SetPath(path);
-    if (args!=NULL)
+    if (args != NULL)
         shellLink->SetArguments(args);
-    if (workingDir!=NULL)
+    if (workingDir != NULL)
         shellLink->SetWorkingDirectory(workingDir);
 
     //Save the shortcut to disk
-    h = persistFile->Save(wName, TRUE);
-    if (FAILED(h)) {
+    h = persistFile->Save(shortcutPath, TRUE);
+    if (FAILED(h))
+    {
         errStr = "Failed to save shortcut";
         goto err;
     }
@@ -87,3 +110,53 @@ err:
     return h;
 }
 
+extern "C" int spawnDetached(const wchar_t *app, const wchar_t *cmdline)
+{
+    STARTUPINFOW si;
+    PROCESS_INFORMATION pi;
+    // make non-constant copy of the parameters
+    // this is allowed per https://docs.microsoft.com/en-us/windows/desktop/api/processthreadsapi/nf-processthreadsapi-createprocessw#security-remarks
+    wchar_t *app_copy = _wcsdup(app);
+    wchar_t *cmdline_copy = _wcsdup(cmdline);
+
+    if (app_copy == NULL || cmdline_copy == NULL)
+    {
+        return GetLastError();
+    }
+
+    ZeroMemory(&si, sizeof(si));
+    si.cb = sizeof(si);
+    ZeroMemory(&pi, sizeof(pi));
+
+    if (!CreateProcessW(app,              // module name
+                        (LPWSTR)cmdline,  // Command line, unicode is allowed
+                        NULL,             // Process handle not inheritable
+                        NULL,             // Thread handle not inheritable
+                        FALSE,            // Set handle inheritance to FALSE
+                        CREATE_NO_WINDOW, // Create without window
+                        NULL,             // Use parent's environment block
+                        NULL,             // Use parent's starting directory
+                        &si,              // Pointer to STARTUPINFO structure
+                        &pi)              // Pointer to PROCESS_INFORMATION structure
+    )
+    {
+        return GetLastError();
+    }
+
+    // Close process and thread handles.
+    CloseHandle(pi.hProcess);
+    CloseHandle(pi.hThread);
+    return 0;
+}
+
+extern "C" HRESULT getSystemFolder(wchar_t *out_path)
+{
+    PWSTR path = NULL;
+    HRESULT result = SHGetKnownFolderPath(FOLDERID_System, 0, NULL, &path);
+    if (result == S_OK)
+    {
+        wcscpy_s(out_path, MAX_PATH + 1, path);
+        CoTaskMemFree(path);
+    }
+    return result;
+}

src/native/mod.rs

@@ -3,8 +3,8 @@
 /// Basic definition of some running process.
 #[derive(Debug)]
 pub struct Process {
-    pub pid : usize,
-    pub name : String
+    pub pid: usize,
+    pub name: String,
 }
 
 #[cfg(windows)]
@@ -15,31 +15,40 @@ mod natives {
 
     const PROCESS_LEN: usize = 10192;
 
-    use std::ffi::CString;
-
     use logging::LoggingErrors;
 
     use std::env;
-    use std::process::Command;
 
     use winapi::shared::minwindef::{DWORD, FALSE, MAX_PATH};
+
+    use winapi::shared::winerror::HRESULT;
+    use winapi::um::processthreadsapi::OpenProcess;
+    use winapi::um::psapi::{
+        EnumProcessModulesEx, GetModuleFileNameExW, K32EnumProcesses, LIST_MODULES_ALL,
+    };
     use winapi::um::winnt::{
         HANDLE, PROCESS_QUERY_INFORMATION, PROCESS_TERMINATE, PROCESS_VM_READ,
     };
-    use winapi::um::processthreadsapi::{OpenProcess};
-    use winapi::um::psapi::{
-        K32EnumProcesses,
-        EnumProcessModulesEx, GetModuleFileNameExW, LIST_MODULES_ALL,
-    };
+
+    use widestring::U16CString;
 
     extern "C" {
         pub fn saveShortcut(
-            shortcutPath: *const ::std::os::raw::c_char,
-            description: *const ::std::os::raw::c_char,
-            path: *const ::std::os::raw::c_char,
-            args: *const ::std::os::raw::c_char,
-            workingDir: *const ::std::os::raw::c_char,
+            shortcutPath: *const winapi::ctypes::wchar_t,
+            description: *const winapi::ctypes::wchar_t,
+            path: *const winapi::ctypes::wchar_t,
+            args: *const winapi::ctypes::wchar_t,
+            workingDir: *const winapi::ctypes::wchar_t,
         ) -> ::std::os::raw::c_int;
+
+        pub fn isDarkThemeActive() -> ::std::os::raw::c_uint;
+
+        pub fn spawnDetached(
+            app: *const winapi::ctypes::wchar_t,
+            cmdline: *const winapi::ctypes::wchar_t,
+        ) -> ::std::os::raw::c_int;
+
+        pub fn getSystemFolder(out_path: *mut ::std::os::raw::c_ushort) -> HRESULT;
     }
 
     // Needed here for Windows interop
@@ -59,15 +68,16 @@ mod natives {
 
         info!("Generating shortcut @ {:?}", source_file);
 
-        let native_target_dir = CString::new(source_file.clone())
-            .log_expect("Error while converting to C-style string");
+        let native_target_dir = U16CString::from_str(source_file.clone())
+            .log_expect("Error while converting to wchar_t");
         let native_description =
-            CString::new(description).log_expect("Error while converting to C-style string");
+            U16CString::from_str(description).log_expect("Error while converting to wchar_t");
         let native_target =
-            CString::new(target).log_expect("Error while converting to C-style string");
-        let native_args = CString::new(args).log_expect("Error while converting to C-style string");
+            U16CString::from_str(target).log_expect("Error while converting to wchar_t");
+        let native_args =
+            U16CString::from_str(args).log_expect("Error while converting to wchar_t");
         let native_working_dir =
-            CString::new(working_dir).log_expect("Error while converting to C-style string");
+            U16CString::from_str(working_dir).log_expect("Error while converting to wchar_t");
 
         let shortcutResult = unsafe {
             saveShortcut(
@@ -108,15 +118,41 @@ mod natives {
             .log_expect("Unable to convert log path to string")
             .replace(" ", "\\ ");
 
-        let target_arguments = format!("ping 127.0.0.1 -n 3 > nul && del {} {}", tool, log);
+        let target_arguments = format!("/C choice /C Y /N /D Y /T 2 & del {} {}", tool, log);
 
         info!("Launching cmd with {:?}", target_arguments);
 
-        Command::new("C:\\Windows\\system32\\cmd.exe")
-            .arg("/C")
-            .arg(&target_arguments)
-            .spawn()
-            .log_expect("Unable to start child process");
+        // Needs to use `spawnDetached` which is an unsafe C/C++ function from interop.cpp
+        #[allow(unsafe_code)]
+        let spawn_result: i32 = unsafe {
+            let mut cmd_path = [0u16; MAX_PATH + 1];
+            let result = getSystemFolder(cmd_path.as_mut_ptr());
+            let mut pos = 0;
+            for x in cmd_path.iter() {
+                if *x == 0 {
+                    break;
+                }
+                pos += 1;
+            }
+            if result != winapi::shared::winerror::S_OK {
+                return;
+            }
+
+            spawnDetached(
+                U16CString::from_str(
+                    format!("{}\\cmd.exe", String::from_utf16_lossy(&cmd_path[..pos])).as_str(),
+                )
+                .log_expect("Unable to convert string to wchar_t")
+                .as_ptr(),
+                U16CString::from_str(target_arguments.as_str())
+                    .log_expect("Unable to convert string to wchar_t")
+                    .as_ptr(),
+            )
+        };
+
+        if spawn_result != 0 {
+            warn!("Unable to start child process");
+        }
     }
 
     #[allow(unsafe_code)]
@@ -149,9 +185,7 @@ mod natives {
 
         let size = ::std::mem::size_of::<DWORD>() * process_ids.len();
         unsafe {
-            if K32EnumProcesses(process_ids.as_mut_ptr(),
-                                size as DWORD,
-                                &mut cb_needed) == 0 {
+            if K32EnumProcesses(process_ids.as_mut_ptr(), size as DWORD, &mut cb_needed) == 0 {
                 return vec![];
             }
         }
@@ -160,7 +194,7 @@ mod natives {
 
         let mut processes = Vec::new();
 
-        for i in 0 .. nb_processes {
+        for i in 0..nb_processes {
             let pid = process_ids[i as usize];
 
             unsafe {
@@ -169,20 +203,25 @@ mod natives {
                     let mut process_name = [0u16; MAX_PATH + 1];
                     let mut cb_needed = 0;
 
-                    if EnumProcessModulesEx(process_handler,
-                                            &mut h_mod,
-                                            ::std::mem::size_of::<DWORD>() as DWORD,
-                                            &mut cb_needed,
-                                            LIST_MODULES_ALL) != 0 {
-                        GetModuleFileNameExW(process_handler,
-                                           h_mod,
-                                           process_name.as_mut_ptr(),
-                                           MAX_PATH as DWORD + 1);
+                    if EnumProcessModulesEx(
+                        process_handler,
+                        &mut h_mod,
+                        ::std::mem::size_of::<DWORD>() as DWORD,
+                        &mut cb_needed,
+                        LIST_MODULES_ALL,
+                    ) != 0
+                    {
+                        GetModuleFileNameExW(
+                            process_handler,
+                            h_mod,
+                            process_name.as_mut_ptr(),
+                            MAX_PATH as DWORD + 1,
+                        );
 
                         let mut pos = 0;
                         for x in process_name.iter() {
                             if *x == 0 {
-                                break
+                                break;
                             }
                             pos += 1;
                         }
@@ -199,6 +238,12 @@ mod natives {
 
         processes
     }
+
+    // Needed here for Windows interop
+    #[allow(unsafe_code)]
+    pub fn is_dark_mode_active() -> bool {
+        unsafe { isDarkThemeActive() == 1 }
+    }
 }
 
 #[cfg(not(windows))]
@@ -209,6 +254,15 @@ mod natives {
 
     use logging::LoggingErrors;
 
+    use sysinfo::{ProcessExt, SystemExt};
+
+    use dirs;
+
+    use slug::slugify;
+    use std::fs::{create_dir_all, File};
+    use std::io::Write;
+
+    #[cfg(target_os = "linux")]
     pub fn create_shortcut(
         name: &str,
         description: &str,
@@ -216,9 +270,51 @@ mod natives {
         args: &str,
         working_dir: &str,
     ) -> Result<String, String> {
-        // TODO: no-op
-        warn!("create_shortcut is stubbed!");
+        // FIXME: no icon will be shown since no icon is provided
+        let data_local_dir = dirs::data_local_dir();
+        match data_local_dir {
+            Some(x) => {
+                let mut path = x;
+                path.push("applications");
+                match create_dir_all(path.to_path_buf()) {
+                    Ok(_) => (()),
+                    Err(e) => {
+                        return Err(format!(
+                            "Local data directory does not exist and cannot be created: {}",
+                            e
+                        ));
+                    }
+                };
+                path.push(format!("{}.desktop", slugify(name))); // file name
+                let desktop_file = format!(
+                    "[Desktop Entry]\nName={}\nExec=\"{}\" {}\nComment={}\nPath={}\n",
+                    name, target, args, description, working_dir
+                );
+                let desktop_f = File::create(path);
+                let mut desktop_f = match desktop_f {
+                    Ok(file) => file,
+                    Err(e) => return Err(format!("Unable to create desktop file: {}", e)),
+                };
+                let mut desktop_f = desktop_f.write_all(desktop_file.as_bytes());
+                match desktop_f {
+                    Ok(_) => Ok("".to_string()),
+                    Err(e) => Err(format!("Unable to write desktop file: {}", e)),
+                }
+            }
+            // return error when failed to acquire local data directory
+            None => Err("Unable to determine local data directory".to_string()),
+        }
+    }
 
+    #[cfg(target_os = "macos")]
+    pub fn create_shortcut(
+        name: &str,
+        description: &str,
+        target: &str,
+        args: &str,
+        working_dir: &str,
+    ) -> Result<String, String> {
+        warn!("STUB! Creating shortcut is not implemented on macOS");
         Ok("".to_string())
     }
 
@@ -242,8 +338,23 @@ mod natives {
 
     /// Returns a list of running processes
     pub fn get_process_names() -> Vec<super::Process> {
-        // TODO: no-op
-        vec![]
+        // a platform-independent implementation using sysinfo crate
+        let mut processes: Vec<super::Process> = Vec::new();
+        let mut system = sysinfo::System::new();
+        system.refresh_all();
+        for (pid, procs) in system.get_process_list() {
+            processes.push(super::Process {
+                pid: *pid as usize,
+                name: procs.name().to_string(),
+            });
+        }
+        processes // return running processes
+    }
+
+    /// Returns if dark mode is active on this system.
+    pub fn is_dark_mode_active() -> bool {
+        // No-op
+        false
     }
 }
 

src/rest.rs

@@ -1,473 +0,0 @@
-//! rest.rs
-//!
-//! Provides a HTTP/REST server for both frontend<->backend communication, as well
-//! as talking to external applications.
-
-use serde_json;
-
-use futures::future;
-use futures::Future;
-use futures::Sink;
-use futures::Stream;
-
-use hyper::header::{ContentLength, ContentType};
-use hyper::server::{Http, Request, Response, Service};
-use hyper::{self, Error as HyperError, Get, Post, StatusCode};
-
-use url::form_urlencoded;
-
-use std::collections::HashMap;
-use std::net::SocketAddr;
-use std::process::exit;
-use std::process::Command;
-use std::process::Stdio;
-use std::sync::mpsc::channel;
-use std::sync::Arc;
-use std::sync::RwLock;
-use std::thread::{self, JoinHandle};
-
-use assets;
-
-use installer::InstallMessage;
-use installer::InstallerFramework;
-
-use logging::LoggingErrors;
-
-use http;
-
-use config::Config;
-
-use native;
-
-#[derive(Serialize)]
-struct FileSelection {
-    path: Option<String>,
-}
-
-/// Acts as a communication mechanism between the Hyper WebService and the rest of the
-/// application.
-pub struct WebServer {
-    _handle: JoinHandle<()>,
-}
-
-impl WebServer {
-    /// Creates a new web server with the specified address.
-    pub fn with_addr(
-        framework: Arc<RwLock<InstallerFramework>>,
-        addr: SocketAddr,
-    ) -> Result<Self, HyperError> {
-        let handle = thread::spawn(move || {
-            let server = Http::new()
-                .bind(&addr, move || {
-                    Ok(WebService {
-                        framework: framework.clone(),
-                    })
-                }).log_expect("Failed to bind to port");
-
-            server.run().log_expect("Failed to run HTTP server");
-        });
-
-        Ok(WebServer { _handle: handle })
-    }
-}
-
-/// Holds internal state for Hyper
-struct WebService {
-    framework: Arc<RwLock<InstallerFramework>>,
-}
-
-impl Service for WebService {
-    type Request = Request;
-    type Response = Response;
-    type Error = hyper::Error;
-    type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
-
-    /// HTTP request handler
-    fn call(&self, req: Self::Request) -> Self::Future {
-        Box::new(future::ok(match (req.method(), req.path()) {
-            // This endpoint should be usable directly from a <script> tag during loading.
-            (&Get, "/api/attrs") => {
-                let framework = self
-                    .framework
-                    .read()
-                    .log_expect("InstallerFramework has been dirtied");
-
-                let file = encapsulate_json(
-                    "base_attributes",
-                    &framework
-                        .base_attributes
-                        .to_json_str()
-                        .log_expect("Failed to render JSON representation of config"),
-                );
-
-                Response::<hyper::Body>::new()
-                    .with_header(ContentLength(file.len() as u64))
-                    .with_header(ContentType::json())
-                    .with_body(file)
-            }
-            // Returns the web config loaded
-            (&Get, "/api/config") => {
-                let mut framework = self
-                    .framework
-                    .write()
-                    .log_expect("InstallerFramework has been dirtied");
-
-                info!(
-                    "Downloading configuration from {:?}...",
-                    framework.base_attributes.target_url
-                );
-
-                match http::download_text(&framework.base_attributes.target_url)
-                    .map(|x| Config::from_toml_str(&x))
-                {
-                    Ok(Ok(config)) => {
-                        framework.config = Some(config.clone());
-
-                        info!("Configuration file downloaded successfully.");
-
-                        let file = framework
-                            .get_config()
-                            .log_expect("Config should be loaded by now")
-                            .to_json_str()
-                            .log_expect("Failed to render JSON representation of config");
-
-                        Response::<hyper::Body>::new()
-                            .with_header(ContentLength(file.len() as u64))
-                            .with_header(ContentType::json())
-                            .with_body(file)
-                    }
-                    Ok(Err(v)) => {
-                        error!("Bad configuration file: {:?}", v);
-
-                        Response::<hyper::Body>::new()
-                            .with_status(StatusCode::ServiceUnavailable)
-                            .with_header(ContentType::plaintext())
-                            .with_body("Bad HTTP response")
-                    }
-                    Err(v) => {
-                        error!(
-                            "General connectivity error while downloading config: {:?}",
-                            v
-                        );
-
-                        Response::<hyper::Body>::new()
-                            .with_status(StatusCode::ServiceUnavailable)
-                            .with_header(ContentLength(v.len() as u64))
-                            .with_header(ContentType::plaintext())
-                            .with_body(v)
-                    }
-                }
-            }
-            // This endpoint should be usable directly from a <script> tag during loading.
-            (&Get, "/api/packages") => {
-                let framework = self
-                    .framework
-                    .read()
-                    .log_expect("InstallerFramework has been dirtied");
-
-                let file = encapsulate_json(
-                    "packages",
-                    &serde_json::to_string(&framework.database)
-                        .log_expect("Failed to render JSON representation of database"),
-                );
-
-                Response::<hyper::Body>::new()
-                    .with_header(ContentLength(file.len() as u64))
-                    .with_header(ContentType::json())
-                    .with_body(file)
-            }
-            // Returns the default path for a installation
-            (&Get, "/api/default-path") => {
-                let framework = self
-                    .framework
-                    .read()
-                    .log_expect("InstallerFramework has been dirtied");
-                let path = framework.get_default_path();
-
-                let response = FileSelection { path };
-
-                let file = serde_json::to_string(&response)
-                    .log_expect("Failed to render JSON payload of default path object");
-
-                Response::<hyper::Body>::new()
-                    .with_header(ContentLength(file.len() as u64))
-                    .with_header(ContentType::json())
-                    .with_body(file)
-            }
-            // Immediately exits the application
-            (&Get, "/api/exit") => {
-                let framework = self
-                    .framework
-                    .read()
-                    .log_expect("InstallerFramework has been dirtied");
-
-                if let Some(ref v) = framework.launcher_path {
-                    Command::new(v)
-                        .stdout(Stdio::null())
-                        .stderr(Stdio::null())
-                        .spawn()
-                        .log_expect("Unable to start child process");
-                }
-
-                if framework.burn_after_exit {
-                    native::burn_on_exit(&framework.base_attributes.name);
-                }
-
-                exit(0);
-            }
-            // Gets properties such as if the application is in maintenance mode
-            (&Get, "/api/installation-status") => {
-                let framework = self
-                    .framework
-                    .read()
-                    .log_expect("InstallerFramework has been dirtied");
-
-                let response = framework.get_installation_status();
-
-                let file = serde_json::to_string(&response)
-                    .log_expect("Failed to render JSON payload of installation status object");
-
-                Response::<hyper::Body>::new()
-                    .with_header(ContentLength(file.len() as u64))
-                    .with_header(ContentType::json())
-                    .with_body(file)
-            }
-            // Streams the installation of a particular set of packages
-            (&Post, "/api/uninstall") => {
-                // We need to bit of pipelining to get this to work
-                let framework = self.framework.clone();
-
-                return Box::new(req.body().concat2().map(move |_b| {
-                    let (sender, receiver) = channel();
-                    let (tx, rx) = hyper::Body::pair();
-
-                    // Startup a thread to do this operation for us
-                    thread::spawn(move || {
-                        let mut framework = framework
-                            .write()
-                            .log_expect("InstallerFramework has been dirtied");
-
-                        if let Err(v) = framework.uninstall(&sender) {
-                            error!("Uninstall error occurred: {:?}", v);
-                            if let Err(v) = sender.send(InstallMessage::Error(v)) {
-                                error!("Failed to send uninstall error: {:?}", v);
-                            };
-                        }
-
-                        if let Err(v) = sender.send(InstallMessage::EOF) {
-                            error!("Failed to send EOF to client: {:?}", v);
-                        }
-                    });
-
-                    // Spawn a thread for transforming messages to chunk messages
-                    thread::spawn(move || {
-                        let mut tx = tx;
-                        loop {
-                            let response = receiver
-                                .recv()
-                                .log_expect("Failed to receive message from runner thread");
-
-                            if let InstallMessage::EOF = response {
-                                break;
-                            }
-
-                            let mut response = serde_json::to_string(&response)
-                                .log_expect("Failed to render JSON logging response payload");
-                            response.push('\n');
-                            tx = tx
-                                .send(Ok(response.into_bytes().into()))
-                                .wait()
-                                .log_expect("Failed to write JSON response payload to client");
-                        }
-                    });
-
-                    Response::<hyper::Body>::new()
-                        //.with_header(ContentLength(file.len() as u64))
-                        .with_header(ContentType::plaintext())
-                        .with_body(rx)
-                }));
-            }
-            // Updates the installer
-            (&Post, "/api/update-updater") => {
-                // We need to bit of pipelining to get this to work
-                let framework = self.framework.clone();
-
-                return Box::new(req.body().concat2().map(move |_b| {
-                    let (sender, receiver) = channel();
-                    let (tx, rx) = hyper::Body::pair();
-
-                    // Startup a thread to do this operation for us
-                    thread::spawn(move || {
-                        let mut framework = framework
-                            .write()
-                            .log_expect("InstallerFramework has been dirtied");
-
-                        if let Err(v) = framework.update_updater(&sender) {
-                            error!("Self-update error occurred: {:?}", v);
-                            if let Err(v) = sender.send(InstallMessage::Error(v)) {
-                                error!("Failed to send self-update error: {:?}", v);
-                            };
-                        }
-
-                        if let Err(v) = sender.send(InstallMessage::EOF) {
-                            error!("Failed to send EOF to client: {:?}", v);
-                        }
-                    });
-
-                    // Spawn a thread for transforming messages to chunk messages
-                    thread::spawn(move || {
-                        let mut tx = tx;
-                        loop {
-                            let response = receiver
-                                .recv()
-                                .log_expect("Failed to receive message from runner thread");
-
-                            if let InstallMessage::EOF = response {
-                                break;
-                            }
-
-                            let mut response = serde_json::to_string(&response)
-                                .log_expect("Failed to render JSON logging response payload");
-                            response.push('\n');
-                            tx = tx
-                                .send(Ok(response.into_bytes().into()))
-                                .wait()
-                                .log_expect("Failed to write JSON response payload to client");
-                        }
-                    });
-
-                    Response::<hyper::Body>::new()
-                        //.with_header(ContentLength(file.len() as u64))
-                        .with_header(ContentType::plaintext())
-                        .with_body(rx)
-                }));
-            }
-            // Streams the installation of a particular set of packages
-            (&Post, "/api/start-install") => {
-                // We need to bit of pipelining to get this to work
-                let framework = self.framework.clone();
-
-                return Box::new(req.body().concat2().map(move |b| {
-                    let results = form_urlencoded::parse(b.as_ref())
-                        .into_owned()
-                        .collect::<HashMap<String, String>>();
-
-                    let mut to_install = Vec::new();
-                    let mut path: Option<String> = None;
-
-                    // Transform results into just an array of stuff to install
-                    for (key, value) in &results {
-                        if key == "path" {
-                            path = Some(value.to_owned());
-                            continue;
-                        }
-
-                        if value == "true" {
-                            to_install.push(key.to_owned());
-                        }
-                    }
-
-                    // The frontend always provides this
-                    let path = path.log_expect(
-                        "No path specified by frontend when one should have already existed",
-                    );
-
-                    let (sender, receiver) = channel();
-                    let (tx, rx) = hyper::Body::pair();
-
-                    // Startup a thread to do this operation for us
-                    thread::spawn(move || {
-                        let mut framework = framework
-                            .write()
-                            .log_expect("InstallerFramework has been dirtied");
-
-                        let new_install = !framework.preexisting_install;
-                        if new_install {
-                            framework.set_install_dir(&path);
-                        }
-
-                        if let Err(v) = framework.install(to_install, &sender, new_install) {
-                            error!("Install error occurred: {:?}", v);
-                            if let Err(v) = sender.send(InstallMessage::Error(v)) {
-                                error!("Failed to send install error: {:?}", v);
-                            }
-                        }
-
-                        if let Err(v) = sender.send(InstallMessage::EOF) {
-                            error!("Failed to send EOF to client: {:?}", v);
-                        }
-                    });
-
-                    // Spawn a thread for transforming messages to chunk messages
-                    thread::spawn(move || {
-                        let mut tx = tx;
-                        loop {
-                            let mut panic_after_finish = false;
-
-                            let response = match receiver
-                                .recv() {
-                                Ok(v) => v,
-                                Err(v) => {
-                                    error!("Queue message failed: {:?}", v);
-                                    panic_after_finish = true;
-                                    InstallMessage::Error("Internal error".to_string())
-                                }
-                            };
-
-                            if let InstallMessage::EOF = response {
-                                break;
-                            }
-
-                            let mut response = serde_json::to_string(&response)
-                                .log_expect("Failed to render JSON logging response payload");
-                            response.push('\n');
-                            tx = tx
-                                .send(Ok(response.into_bytes().into()))
-                                .wait()
-                                .log_expect("Failed to write JSON response payload to client");
-
-                            if panic_after_finish {
-                                panic!("Failed to read from queue (flushed error message successfully)");
-                            }
-                        }
-                    });
-
-                    Response::<hyper::Body>::new()
-                        //.with_header(ContentLength(file.len() as u64))
-                        .with_header(ContentType::plaintext())
-                        .with_body(rx)
-                }));
-            }
-
-            // Static file handler
-            (&Get, _) => {
-                // At this point, we have a web browser client. Search for a index page
-                // if needed
-                let mut path: String = req.path().to_owned();
-                if path.ends_with('/') {
-                    path += "index.html";
-                }
-
-                match assets::file_from_string(&path) {
-                    Some((content_type, file)) => {
-                        let content_type = ContentType(content_type.parse().log_expect(
-                            "Failed to parse content type into correct representation",
-                        ));
-                        Response::<hyper::Body>::new()
-                            .with_header(ContentLength(file.len() as u64))
-                            .with_header(content_type)
-                            .with_body(file)
-                    }
-                    None => Response::new().with_status(StatusCode::NotFound),
-                }
-            }
-            // Fallthrough for POST/PUT/CONNECT/...
-            _ => Response::new().with_status(StatusCode::NotFound),
-        }))
-    }
-}
-
-/// Encapsulates JSON as a injectable Javascript script.
-fn encapsulate_json(field_name: &str, json: &str) -> String {
-    format!("var {} = {};", field_name, json)
-}

src/self_update.rs

@@ -0,0 +1,111 @@
+//! self_update.rs
+//!
+//! Handles different components of self-updating.
+
+use std::fs::{remove_file, File};
+use std::path::{Path, PathBuf};
+use std::process::{exit, Command};
+use std::{thread, time};
+
+use clap::{App, ArgMatches};
+
+use logging::LoggingErrors;
+
+/// Swaps around the main executable if needed.
+pub fn perform_swap(current_exe: &PathBuf, to_path: Option<&str>) {
+    // Check to see if we are currently in a self-update
+    if let Some(to_path) = to_path {
+        let to_path = PathBuf::from(to_path);
+
+        // Sleep a little bit to allow Windows to close the previous file handle
+        thread::sleep(time::Duration::from_millis(3000));
+
+        info!(
+            "Swapping installer from {} to {}",
+            current_exe.display(),
+            to_path.display()
+        );
+
+        // Attempt it a few times because Windows can hold a lock
+        for i in 1..=5 {
+            let swap_result = if cfg!(windows) {
+                use std::fs::copy;
+
+                copy(&current_exe, &to_path).map(|_x| ())
+            } else {
+                use std::fs::rename;
+
+                rename(&current_exe, &to_path)
+            };
+
+            match swap_result {
+                Ok(_) => break,
+                Err(e) => {
+                    if i < 5 {
+                        info!("Copy attempt failed: {:?}, retrying in 3 seconds.", e);
+                        thread::sleep(time::Duration::from_millis(3000));
+                    } else {
+                        Err::<(), _>(e).log_expect("Copying new binary failed");
+                    }
+                }
+            }
+        }
+
+        Command::new(to_path)
+            .spawn()
+            .log_expect("Unable to start child process");
+
+        exit(0);
+    }
+}
+
+pub fn check_args<'a>(app: App<'a, '_>, current_path: &Path) -> Option<ArgMatches<'a>> {
+    // If we just finished a update, we need to inject our previous command line arguments
+    let args_file = current_path.join("args.json");
+
+    if args_file.exists() {
+        let database: Vec<String> = {
+            let metadata_file =
+                File::open(&args_file).log_expect("Unable to open args file handle");
+
+            serde_json::from_reader(metadata_file).log_expect("Unable to read metadata file")
+        };
+
+        let matches = app.get_matches_from(database);
+
+        info!("Parsed command line arguments from original instance");
+        remove_file(args_file).log_expect("Unable to clean up args file");
+
+        Some(matches)
+    } else {
+        None
+    }
+}
+
+pub fn cleanup(current_path: &Path) {
+    // Cleanup any remaining new maintenance tool instances if they exist
+    if cfg!(windows) {
+        let updater_executable = current_path.join("maintenancetool_new.exe");
+
+        if updater_executable.exists() {
+            // Sleep a little bit to allow Windows to close the previous file handle
+            thread::sleep(time::Duration::from_millis(3000));
+
+            // Attempt it a few times because Windows can hold a lock
+            for i in 1..=5 {
+                let swap_result = remove_file(&updater_executable);
+                match swap_result {
+                    Ok(_) => break,
+                    Err(e) => {
+                        if i < 5 {
+                            info!("Cleanup attempt failed: {:?}, retrying in 3 seconds.", e);
+                            thread::sleep(time::Duration::from_millis(3000));
+                        } else {
+                            warn!("Deleting temp binary failed after 5 attempts: {:?}", e);
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

src/sources/github/mod.rs

@@ -41,17 +41,19 @@ impl ReleaseSource for GithubReleases {
             .get(&format!(
                 "https://api.github.com/repos/{}/releases",
                 config.repo
-            )).header(USER_AGENT, "liftinstall (j-selby)")
+            ))
+            .header(USER_AGENT, "liftinstall (j-selby)")
             .send()
             .map_err(|x| format!("Error while sending HTTP request: {:?}", x))?;
 
         match response.status() {
             StatusCode::OK => {}
             StatusCode::FORBIDDEN => {
-                return Err(format!(
+                return Err(
                     "GitHub is rate limiting you. Try moving to a internet connection \
                      that isn't shared, and/or disabling VPNs."
-                ));
+                        .to_string(),
+                );
             }
             _ => {
                 return Err(format!("Bad status code: {:?}.", response.status()));
@@ -87,14 +89,18 @@ impl ReleaseSource for GithubReleases {
                 let string = match asset["name"].as_str() {
                     Some(v) => v,
                     None => {
-                        return Err("JSON payload missing information about release name".to_string())
+                        return Err(
+                            "JSON payload missing information about release name".to_string()
+                        );
                     }
                 };
 
                 let url = match asset["browser_download_url"].as_str() {
                     Some(v) => v,
                     None => {
-                        return Err("JSON payload missing information about release URL".to_string())
+                        return Err(
+                            "JSON payload missing information about release URL".to_string()
+                        );
                     }
                 };
 

src/sources/mod.rs

@@ -9,7 +9,7 @@ pub mod github;
 use self::types::ReleaseSource;
 
 /// Returns a ReleaseSource by a name, if possible
-pub fn get_by_name(name: &str) -> Option<Box<ReleaseSource>> {
+pub fn get_by_name(name: &str) -> Option<Box<dyn ReleaseSource>> {
     match name {
         "github" => Some(Box::new(github::GithubReleases::new())),
         _ => None,

src/tasks/download_pkg.rs

@@ -12,7 +12,7 @@ use tasks::resolver::ResolvePackageTask;
 
 use http::stream_file;
 
-use number_prefix::{decimal_prefix, Prefixed, Standalone};
+use number_prefix::{NumberPrefix, Prefixed, Standalone};
 
 use logging::LoggingErrors;
 
@@ -25,7 +25,7 @@ impl Task for DownloadPackageTask {
         &mut self,
         mut input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 1);
 
@@ -68,11 +68,11 @@ impl Task for DownloadPackageTask {
             };
 
             // Pretty print data volumes
-            let pretty_current = match decimal_prefix(downloaded as f64) {
+            let pretty_current = match NumberPrefix::decimal(downloaded as f64) {
                 Standalone(bytes) => format!("{} bytes", bytes),
                 Prefixed(prefix, n) => format!("{:.0} {}B", n, prefix),
             };
-            let pretty_total = match decimal_prefix(size as f64) {
+            let pretty_total = match NumberPrefix::decimal(size as f64) {
                 Standalone(bytes) => format!("{} bytes", bytes),
                 Prefixed(prefix, n) => format!("{:.0} {}B", n, prefix),
             };

src/tasks/ensure_only_instance.rs

@@ -7,8 +7,8 @@ use tasks::TaskDependency;
 use tasks::TaskMessage;
 use tasks::TaskParamType;
 
-use native::Process;
 use native::get_process_names;
+use native::Process;
 
 use std::process;
 
@@ -19,11 +19,11 @@ impl Task for EnsureOnlyInstanceTask {
         &mut self,
         input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        _messenger: &Fn(&TaskMessage),
+        _messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 0);
 
-        let current_pid =  process::id() as usize;
+        let current_pid = process::id() as usize;
         for Process { pid, name } in get_process_names() {
             if pid == current_pid {
                 continue;
@@ -32,13 +32,13 @@ impl Task for EnsureOnlyInstanceTask {
             let exe = name;
 
             if exe.ends_with("maintenancetool.exe") || exe.ends_with("maintenancetool") {
-                return Err(format!("Maintenance tool is already running!"));
+                return Err("Maintenance tool is already running!".to_string());
             }
 
             for package in &context.database.packages {
                 for file in &package.files {
                     if exe.ends_with(file) {
-                        return Err(format!("The installed application is currently running!"));
+                        return Err("The installed application is currently running!".to_string());
                     }
                 }
             }
@@ -52,6 +52,6 @@ impl Task for EnsureOnlyInstanceTask {
     }
 
     fn name(&self) -> String {
-        format!("EnsureOnlyInstanceTask")
+        "EnsureOnlyInstanceTask".to_string()
     }
 }

src/tasks/install.rs

@@ -26,7 +26,7 @@ impl Task for InstallTask {
         &mut self,
         _: Vec<TaskParamType>,
         _: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         messenger(&TaskMessage::DisplayMessage("Wrapping up...", 0.0));
         Ok(TaskParamType::None)

src/tasks/install_dir.rs

@@ -21,7 +21,7 @@ impl Task for VerifyInstallDirTask {
         &mut self,
         input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 0);
         messenger(&TaskMessage::DisplayMessage(

src/tasks/install_global_shortcut.rs

@@ -20,7 +20,7 @@ impl Task for InstallGlobalShortcutsTask {
         &mut self,
         _: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         messenger(&TaskMessage::DisplayMessage(
             "Generating global shortcut...",

src/tasks/install_pkg.rs

@@ -34,7 +34,7 @@ impl Task for InstallPackageTask {
         &mut self,
         mut input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         messenger(&TaskMessage::DisplayMessage(
             &format!("Installing package {:?}...", self.name),

src/tasks/install_shortcuts.rs

@@ -22,7 +22,7 @@ impl Task for InstallShortcutsTask {
         &mut self,
         _: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         messenger(&TaskMessage::DisplayMessage(
             &format!("Generating shortcuts for package {:?}...", self.name),

src/tasks/mod.rs

@@ -49,12 +49,12 @@ pub enum TaskOrdering {
 /// A dependency of a task with various properties.
 pub struct TaskDependency {
     ordering: TaskOrdering,
-    task: Box<Task>,
+    task: Box<dyn Task>,
 }
 
 impl TaskDependency {
     /// Builds a new dependency from the specified task.
-    pub fn build(ordering: TaskOrdering, task: Box<Task>) -> TaskDependency {
+    pub fn build(ordering: TaskOrdering, task: Box<dyn Task>) -> TaskDependency {
         TaskDependency { ordering, task }
     }
 }
@@ -74,7 +74,7 @@ pub trait Task {
         &mut self,
         input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String>;
 
     /// Returns a vector containing all dependencies that need to be executed
@@ -87,7 +87,7 @@ pub trait Task {
 
 /// The dependency tree allows for smart iteration on a Task struct.
 pub struct DependencyTree {
-    task: Box<Task>,
+    task: Box<dyn Task>,
     dependencies: Vec<(TaskOrdering, DependencyTree)>,
 }
 
@@ -120,7 +120,7 @@ impl DependencyTree {
     pub fn execute(
         &mut self,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         let total_tasks = (self.dependencies.len() + 1) as f64;
 
@@ -133,8 +133,8 @@ impl DependencyTree {
                 continue;
             }
 
-            let result = i.execute(context, &|msg: &TaskMessage| match msg {
-                &TaskMessage::DisplayMessage(msg, progress) => {
+            let result = i.execute(context, &|msg: &TaskMessage| match *msg {
+                TaskMessage::DisplayMessage(msg, progress) => {
                     messenger(&TaskMessage::DisplayMessage(
                         msg,
                         progress / total_tasks + (1.0 / total_tasks) * f64::from(count),
@@ -159,8 +159,8 @@ impl DependencyTree {
 
         let task_result = self
             .task
-            .execute(inputs, context, &|msg: &TaskMessage| match msg {
-                &TaskMessage::DisplayMessage(msg, progress) => {
+            .execute(inputs, context, &|msg: &TaskMessage| match *msg {
+                TaskMessage::DisplayMessage(msg, progress) => {
                     messenger(&TaskMessage::DisplayMessage(
                         msg,
                         progress / total_tasks + (1.0 / total_tasks) * f64::from(count),
@@ -179,8 +179,8 @@ impl DependencyTree {
                 continue;
             }
 
-            let result = i.execute(context, &|msg: &TaskMessage| match msg {
-                &TaskMessage::DisplayMessage(msg, progress) => {
+            let result = i.execute(context, &|msg: &TaskMessage| match *msg {
+                TaskMessage::DisplayMessage(msg, progress) => {
                     messenger(&TaskMessage::DisplayMessage(
                         msg,
                         progress / total_tasks + (1.0 / total_tasks) * f64::from(count),
@@ -206,7 +206,7 @@ impl DependencyTree {
     }
 
     /// Builds a new pipeline from the specified task, iterating on dependencies.
-    pub fn build(task: Box<Task>) -> DependencyTree {
+    pub fn build(task: Box<dyn Task>) -> DependencyTree {
         let dependencies = task
             .dependencies()
             .into_iter()

src/tasks/resolver.rs

@@ -24,7 +24,7 @@ impl Task for ResolvePackageTask {
         &mut self,
         input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 0);
         let mut metadata: Option<PackageDescription> = None;

src/tasks/save_database.rs

@@ -14,7 +14,7 @@ impl Task for SaveDatabaseTask {
         &mut self,
         input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 0);
         messenger(&TaskMessage::DisplayMessage(

src/tasks/save_executable.rs

@@ -23,7 +23,7 @@ impl Task for SaveExecutableTask {
         &mut self,
         input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 0);
         messenger(&TaskMessage::DisplayMessage(

src/tasks/uninstall.rs

@@ -19,7 +19,7 @@ impl Task for UninstallTask {
         &mut self,
         _: Vec<TaskParamType>,
         _: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         messenger(&TaskMessage::DisplayMessage("Wrapping up...", 0.0));
         Ok(TaskParamType::None)

src/tasks/uninstall_global_shortcut.rs

@@ -18,7 +18,7 @@ impl Task for UninstallGlobalShortcutsTask {
         &mut self,
         input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 0);
 

src/tasks/uninstall_pkg.rs

@@ -27,7 +27,7 @@ impl Task for UninstallPackageTask {
         &mut self,
         input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 1);
 

src/tasks/uninstall_shortcuts.rs

@@ -24,7 +24,7 @@ impl Task for UninstallShortcutsTask {
         &mut self,
         input: Vec<TaskParamType>,
         context: &mut InstallerFramework,
-        messenger: &Fn(&TaskMessage),
+        messenger: &dyn Fn(&TaskMessage),
     ) -> Result<TaskParamType, String> {
         assert_eq!(input.len(), 0);
 

static/css/main.css

@@ -1,88 +0,0 @@
-/* roboto-regular - latin */
-@font-face {
-    font-family: 'Roboto';
-    font-style: normal;
-    font-weight: 400;
-    src: url('../fonts/roboto-v18-latin-regular.eot'); /* IE9 Compat Modes */
-    src: local('Roboto'), local('Roboto-Regular'),
-    url('../fonts/roboto-v18-latin-regular.woff2') format('woff2'), /* Super Modern Browsers */
-    url('../fonts/roboto-v18-latin-regular.woff') format('woff');
-}
-
-html, body {
-    overflow: hidden;
-    height: 100%;
-}
-
-body, div, span, h1, h2, h3, h4, h5, h6 {
-    -webkit-user-select: none;
-    -moz-user-select: none;
-    -ms-user-select: none;
-    user-select: none;
-    cursor: default;
-}
-
-pre {
-    -webkit-user-select: text;
-    -moz-user-select: text;
-    -ms-user-select: text;
-    user-select: text;
-    cursor: text;
-}
-
-.tile.is-child > .box {
-    height: 100%;
-}
-
-.has-padding {
-    padding: 2rem;
-    position: relative;
-}
-
-.clickable-box {
-    cursor: pointer;
-}
-
-.clickable-box label {
-    pointer-events: none;
-}
-
-.is-max-height {
-    height: 100%;
-}
-
-.is-bottom-floating {
-    position: absolute;
-    bottom: 0;
-}
-
-.is-right-floating {
-    position: absolute;
-    right: 0;
-}
-
-.has-padding .is-right-floating {
-    right: 1rem;
-}
-
-.is-left-floating {
-    position: absolute;
-    left: 0;
-}
-
-.has-padding .is-left-floating {
-    left: 1rem;
-}
-
-.fullscreen {
-    position: fixed;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0;
-    width: 100%;
-    height: 100%;
-    z-index: 9999;
-    padding: 20px;
-    background: #fff;
-}

static/index.html

@@ -1,67 +0,0 @@
-<!doctype html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport"
-          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
-    <meta http-equiv="X-UA-Compatible" content="ie=edge">
-    <title id="window-title">... Installer</title>
-
-    <link rel="icon" href="/favicon.ico" />
-    <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon" />
-
-    <link rel="stylesheet" href="/css/bulma.min.css" type="text/css">
-    <link rel="stylesheet" href="/css/main.css" type="text/css">
-</head>
-<body class="is-max-height">
-    <div class="fullscreen" id="ie-blackout" style="display: none">
-        <div class="title">Your computer is out of date.</div>
-        <div class="subtitle">
-            Make sure that your computer is up to date, and that you have Internet Explorer 11 installed.
-        </div>
-        <div class="subtitle">
-            Please note we do not support pirated or unsupported versions of Windows.
-        </div>
-    </div>
-
-    <script type="text/javascript">
-        if (!document.__proto__) {
-            document.getElementById("ie-blackout").style.display = "block";
-        }
-    </script>
-
-    <div id="app" class="is-max-height">
-        <section class="section is-max-height">
-            <div class="container is-max-height">
-                <div class="columns is-max-height">
-                    <div class="column is-one-third has-padding" v-if="!metadata.is_launcher">
-                        <img src="/logo.png" width="60%" />
-                        <br />
-                        <br />
-
-                        <h2 class="subtitle" v-if="!metadata.preexisting_install">
-                            Welcome to the {{ attrs.name }} installer!
-                        </h2>
-                        <h2 class="subtitle" v-if="!metadata.preexisting_install">
-                            We will have you up and running in just a few moments.
-                        </h2>
-
-                        <h2 class="subtitle" v-if="metadata.preexisting_install">
-                            Welcome to the {{ attrs.name }} Maintenance Tool.
-                        </h2>
-                    </div>
-
-                    <router-view></router-view>
-                </div>
-            </div>
-        </section>
-    </div>
-
-    <script src="/js/vue.min.js" type="text/javascript"></script>
-    <script src="/js/vue-router.min.js" type="text/javascript"></script>
-    <script src="/api/attrs" type="text/javascript"></script>
-    <script src="/js/helpers.js" type="text/javascript"></script>
-    <script src="/js/views.js" type="text/javascript"></script>
-    <script src="/js/main.js" type="text/javascript"></script>
-</body>
-</html>

static/js/helpers.js

@@ -1,144 +0,0 @@
-/**
- * helpers.js
- *
- * Additional state-less helper methods.
- */
-
-var request_id = 0;
-
-/**
- * Makes a AJAX request.
- *
- * @param path The path to connect to.
- * @param successCallback A callback with a JSON payload.
- * @param failCallback A fail callback. Optional.
- * @param data POST data. Optional.
- */
-function ajax(path, successCallback, failCallback, data) {
-    if (failCallback === undefined) {
-        failCallback = defaultFailHandler;
-    }
-
-    console.log("Making HTTP request to " + path);
-
-    var req = new XMLHttpRequest();
-
-    req.addEventListener("load", function() {
-        // The server can sometimes return a string error. Make sure we handle this.
-        if (this.status === 200 && this.getResponseHeader('Content-Type').indexOf("application/json") !== -1) {
-            successCallback(JSON.parse(this.responseText));
-        } else {
-            failCallback(this.responseText);
-        }
-    });
-    req.addEventListener("error", failCallback);
-
-    req.open(data == null ? "GET" : "POST", path + "?nocache=" + request_id++, true);
-    // Rocket only currently supports URL encoded forms.
-    req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
-
-    if (data != null) {
-        var form = "";
-
-        for (var key in data) {
-            if (!data.hasOwnProperty(key)) {
-                continue;
-            }
-
-            if (form !== "") {
-                form += "&";
-            }
-
-            form += encodeURIComponent(key) + "=" + encodeURIComponent(data[key]);
-        }
-
-        req.send(form);
-    } else {
-        req.send();
-    }
-}
-
-/**
- * Makes a AJAX request, streaming each line as it arrives. Type should be text/plain,
- * each line will be interpreted as JSON separately.
- *
- * @param path The path to connect to.
- * @param callback A callback with a JSON payload. Called for every line as it comes.
- * @param successCallback A callback with a raw text payload.
- * @param failCallback A fail callback. Optional.
- * @param data POST data. Optional.
- */
-function stream_ajax(path, callback, successCallback, failCallback, data) {
-    var req = new XMLHttpRequest();
-
-    console.log("Making streaming HTTP request to " + path);
-
-    req.addEventListener("load", function() {
-        // The server can sometimes return a string error. Make sure we handle this.
-        if (this.status === 200) {
-            successCallback(this.responseText);
-        } else {
-            failCallback(this.responseText);
-        }
-    });
-
-    var buffer = "";
-    var seenBytes = 0;
-
-    req.onreadystatechange = function() {
-        if(req.readyState > 2) {
-            buffer += req.responseText.substr(seenBytes);
-
-            var pointer;
-            while ((pointer = buffer.indexOf("\n")) >= 0) {
-                var line = buffer.substring(0, pointer).trim();
-                buffer = buffer.substring(pointer + 1);
-
-                if (line.length === 0) {
-                    continue;
-                }
-
-                var contents = JSON.parse(line);
-                callback(contents);
-            }
-
-            seenBytes = req.responseText.length;
-        }
-    };
-
-    req.addEventListener("error", failCallback);
-
-    req.open(data == null ? "GET" : "POST", path + "?nocache=" + request_id++, true);
-    // Rocket only currently supports URL encoded forms.
-    req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
-
-    if (data != null) {
-        var form = "";
-
-        for (var key in data) {
-            if (!data.hasOwnProperty(key)) {
-                continue;
-            }
-
-            if (form !== "") {
-                form += "&";
-            }
-
-            form += encodeURIComponent(key) + "=" + encodeURIComponent(data[key]);
-        }
-
-        req.send(form);
-    } else {
-        req.send();
-    }
-}
-
-/**
- * The default handler if a AJAX request fails. Not to be used directly.
- *
- * @param e The XMLHttpRequest that failed.
- */
-function defaultFailHandler(e) {
-    console.error("A AJAX request failed, and was not caught:");
-    console.error(e);
-}

static/js/main.js

@@ -1,68 +0,0 @@
-// Overwrite loggers with the logging backend
-if (window.external !== undefined && window.external.invoke !== undefined) {
-    window.onerror = function(msg, url, line) {
-        old_onerror(msg, url, line);
-        window.external.invoke(JSON.stringify({
-            Log: {
-                kind: "error",
-                msg: msg + " @ " + url + ":" + line
-            }
-        }));
-    };
-
-    // Borrowed from http://tobyho.com/2012/07/27/taking-over-console-log/
-    function intercept(method){
-        console[method] = function(){
-            var message = Array.prototype.slice.apply(arguments).join(' ');
-            window.external.invoke(JSON.stringify({
-                Log: {
-                    kind: method,
-                    msg: message
-                }
-            }));
-        }
-    }
-
-    var methods = ['log', 'warn', 'error'];
-    for (var i = 0; i < methods.length; i++) {
-        intercept(methods[i]);
-    }
-}
-
-// Disable F5
-function disable_shortcuts(e) {
-    switch (e.keyCode) {
-        case 116: // F5
-            e.preventDefault();
-            break;
-    }
-}
-
-window.addEventListener("keydown", disable_shortcuts);
-
-document.getElementById("window-title").innerText = base_attributes.name + " Installer";
-
-function selectFileCallback(name) {
-    app.install_location = name;
-}
-
-var app = new Vue({
-    router: router,
-    data: {
-        attrs: base_attributes,
-        config : {},
-        install_location : "",
-        // If the option to pick an install location should be provided
-        show_install_location : true,
-        metadata : {
-            database : [],
-            install_path : "",
-            preexisting_install : false
-        }
-    },
-    methods: {
-        "exit": function() {
-            ajax("/api/exit", function() {});
-        }
-    }
-}).$mount("#app");

static/js/views.js

@@ -1,460 +0,0 @@
-const DownloadConfig = {
-    template: `
-        <div class="column has-padding">
-            <h4 class="subtitle">Downloading config...</h4>
-
-            <br />
-            <progress class="progress is-info is-medium" value="0" max="100">
-                0%
-            </progress>
-        </div>
-    `,
-    created: function() {
-        this.download_install_status();
-    },
-    methods: {
-        download_install_status: function() {
-            var that = this; // IE workaround
-
-            ajax("/api/installation-status", function(e) {
-                app.metadata = e;
-
-                that.download_config();
-            });
-        },
-        download_config: function() {
-            var that = this; // IE workaround
-
-            ajax("/api/config", function(e) {
-                app.config = e;
-
-                that.choose_next_state();
-
-            }, function(e) {
-                console.error("Got error while downloading config: "
-                    + e);
-
-                if (app.metadata.is_launcher) {
-                    // Just launch the target application
-                    app.exit();
-                } else {
-                    router.replace({name: 'showerr', params: {msg: "Got error while downloading config: "
-                                + e}});
-                }
-            });
-        },
-        choose_next_state: function() {
-            // Update the updater if needed
-            if (app.config.new_tool) {
-                router.push("/install/updater");
-                return;
-            }
-
-            if (app.metadata.preexisting_install) {
-                app.install_location = app.metadata.install_path;
-
-                // Copy over installed packages
-                for (var x = 0; x < app.config.packages.length; x++) {
-                    app.config.packages[x].default = false;
-                    app.config.packages[x].installed = false;
-                }
-
-                for (var i = 0; i < app.metadata.database.packages.length; i++) {
-                    // Find this config package
-                    for (var x = 0; x < app.config.packages.length; x++) {
-                        if (app.config.packages[x].name === app.metadata.database.packages[i].name) {
-                            app.config.packages[x].default = true;
-                            app.config.packages[x].installed = true;
-                        }
-                    }
-                }
-
-                if (app.metadata.is_launcher) {
-                    router.replace("/install/regular");
-                } else {
-                    router.replace("/modify");
-                }
-            } else {
-                for (var x = 0; x < app.config.packages.length; x++) {
-                    app.config.packages[x].installed = false;
-                }
-
-                // Need to do a bit more digging to get at the
-                // install location.
-                ajax("/api/default-path", function(e) {
-                    if (e.path != null) {
-                        app.install_location = e.path;
-                    }
-                });
-
-                router.replace("/packages");
-            }
-        }
-    }
-};
-
-const SelectPackages = {
-    template: `
-        <div class="column has-padding">
-            <h4 class="subtitle">Select which packages you want to install:</h4>
-
-            <!-- Build options -->
-            <div class="tile is-ancestor">
-                <div class="tile is-parent" v-for="package in $root.$data.config.packages" :index="package.name">
-                    <div class="tile is-child">
-                        <div class="box clickable-box" v-on:click.capture.stop="package.default = !package.default">
-                            <label class="checkbox">
-                                <input type="checkbox" v-model="package.default" />
-                                {{ package.name }}
-                                <span v-if="package.installed"><i>(installed)</i></span>
-                            </label>
-                            <p>
-                                {{ package.description }}
-                            </p>
-                        </div>
-                    </div>
-                </div>
-            </div>
-
-            <div class="subtitle is-6" v-if="!$root.$data.metadata.preexisting_install && advanced">Install Location</div>
-            <div class="field has-addons" v-if="!$root.$data.metadata.preexisting_install && advanced">
-                <div class="control is-expanded">
-                    <input class="input" type="text" v-model="$root.$data.install_location"
-                           placeholder="Enter a install path here">
-                </div>
-                <div class="control">
-                    <a class="button is-dark" v-on:click="select_file">
-                        Select
-                    </a>
-                </div>
-            </div>
-
-            <div class="is-right-floating is-bottom-floating">
-                <div class="field is-grouped">
-                    <p class="control">
-                        <a class="button is-medium" v-if="!$root.$data.config.hide_advanced && !$root.$data.metadata.preexisting_install && !advanced" 
-                           v-on:click="advanced = true">Advanced...</a>
-                    </p>
-                    <p class="control">
-                        <a class="button is-dark is-medium" v-if="!$root.$data.metadata.preexisting_install" 
-                           v-on:click="install">Install</a>
-                    </p>
-                    <p class="control">
-                        <a class="button is-dark is-medium" v-if="$root.$data.metadata.preexisting_install"
-                           v-on:click="install">Modify</a>
-                    </p>
-                </div>
-            </div>
-            
-            <div class="field is-grouped is-left-floating is-bottom-floating">
-                <p class="control">
-                    <a class="button is-medium" v-if="$root.$data.metadata.preexisting_install"
-                       v-on:click="go_back">Back</a>
-                </p>
-            </div>
-        </div>
-    `,
-    data: function() {
-        return {
-            advanced: false
-        }
-    },
-    methods: {
-        select_file: function() {
-            window.external.invoke(JSON.stringify({
-                SelectInstallDir: {
-                    callback_name: "selectFileCallback"
-                }
-            }));
-        },
-        install: function() {
-            router.push("/install/regular");
-        },
-        go_back: function() {
-            router.go(-1);
-        }
-    }
-};
-
-const InstallPackages = {
-    template: `
-        <div class="column has-padding">
-            <h4 class="subtitle" v-if="$root.$data.metadata.is_launcher || is_update">Checking for updates...</h4>
-            <h4 class="subtitle" v-else-if="is_uninstall">Uninstalling...</h4>
-            <h4 class="subtitle" v-else-if="is_updater_update">Downloading self-update...</h4>
-            <h4 class="subtitle" v-else>Installing...</h4>
-            <div v-html="$root.$data.config.installing_message"></div>
-            <br />
-
-            <div v-html="progress_message"></div>
-            <progress class="progress is-info is-medium" v-bind:value="progress" max="100">
-                {{ progress }}%
-            </progress>
-        </div>
-    `,
-    data: function() {
-        return {
-            progress: 0.0,
-            progress_message: "Please wait...",
-            is_uninstall: false,
-            is_updater_update: false,
-            is_update: false,
-            failed_with_error: false,
-            packages_installed: 0
-        }
-    },
-    created: function() {
-        this.is_uninstall = this.$route.params.kind === "uninstall";
-        this.is_updater_update = this.$route.params.kind === "updater";
-        this.is_update = this.$route.params.kind === "update";
-        console.log("Installer kind: " + this.$route.params.kind);
-        this.install();
-    },
-    methods: {
-        install: function() {
-            var results = {};
-
-            for (var package_index = 0; package_index < app.config.packages.length; package_index++) {
-                var current_package = app.config.packages[package_index];
-                if (current_package.default != null) {
-                    results[current_package.name] = current_package.default;
-                }
-            }
-
-            results["path"] = app.install_location;
-
-            var that = this; // IE workaround
-
-            var targetUrl = "/api/start-install";
-            if (this.is_uninstall) {
-                targetUrl = "/api/uninstall";
-            }
-            if (this.is_updater_update) {
-                targetUrl = "/api/update-updater";
-            }
-
-            stream_ajax(targetUrl, function(line) {
-                if (line.hasOwnProperty("Status")) {
-                    that.progress_message = line.Status[0];
-                    that.progress = line.Status[1] * 100;
-                }
-
-                if (line.hasOwnProperty("PackageInstalled")) {
-                    that.packages_installed += 1;
-                }
-
-                if (line.hasOwnProperty("Error")) {
-                    if (app.metadata.is_launcher) {
-                        app.exit();
-                    } else {
-                        that.failed_with_error = true;
-                        router.replace({name: 'showerr', params: {msg: line.Error}});
-                    }
-                }
-            }, function(e) {
-                if (that.is_updater_update) {
-                    // Continue with what we were doing
-                    if (app.metadata.is_launcher) {
-                        router.replace("/install/regular");
-                    } else {
-                        if (app.metadata.preexisting_install) {
-                            router.replace("/modify");
-                        } else {
-                            router.replace("/packages");
-                        }
-                    }
-                } else {
-                    if (app.metadata.is_launcher) {
-                        app.exit();
-                    } else if (!that.failed_with_error) {
-                        if (that.is_uninstall) {
-                            router.replace({name: 'complete', params: {
-                                uninstall: true,
-                                update: that.is_update,
-                                installed: that.packages_installed
-                            }});
-                        } else {
-                            router.replace({name: 'complete', params: {
-                                uninstall: false,
-                                update: that.is_update,
-                                installed: that.packages_installed
-                            }});
-                        }
-                    }
-                }
-            }, undefined, results);
-        }
-    }
-};
-
-const ErrorView = {
-    template: `
-        <div class="column has-padding">
-            <h4 class="subtitle">An error occurred:</h4>
-
-            <pre>{{ msg }}</pre>
-
-            <div class="field is-grouped is-right-floating is-bottom-floating">
-                <p class="control">
-                    <a class="button is-primary is-medium" v-if="remaining" v-on:click="go_back">Back</a>
-                </p>
-            </div>
-        </div>
-    `,
-    data: function() {
-        return {
-            msg: this.$route.params.msg,
-            remaining: window.history.length > 1
-        }
-    },
-    methods: {
-        go_back: function() {
-            router.go(-1);
-        }
-    }
-};
-
-const CompleteView = {
-    template: `
-        <div class="column has-padding">
-            <div v-if="was_update">
-                <div v-if="has_installed">
-                    <h4 class="subtitle">{{ $root.$data.attrs.name }} has been updated.</h4>
-    
-                    <p>You can find your installed applications in your start menu.</p>
-                </div>
-                <div v-else>
-                    <h4 class="subtitle">{{ $root.$data.attrs.name }} is already up to date!</h4>
-    
-                    <p>You can find your installed applications in your start menu.</p>
-                </div>
-            </div>
-            <div v-else-if="was_install">
-                <h4 class="subtitle">Thanks for installing {{ $root.$data.attrs.name }}!</h4>
-
-                <p>You can find your installed applications in your start menu.</p>
-
-                <img src="/how-to-open.png" />
-            </div>
-            <div v-else>
-                <h4 class="subtitle">{{ $root.$data.attrs.name }} has been uninstalled.</h4>
-            </div>
-
-            <div class="field is-grouped is-right-floating is-bottom-floating">
-                <p class="control">
-                    <a class="button is-dark is-medium" v-on:click="exit">Exit</a>
-                </p>
-            </div>
-        </div>
-    `,
-    data: function() {
-        return {
-            was_install: !this.$route.params.uninstall,
-            was_update: this.$route.params.update,
-            has_installed: this.$route.params.packages_installed > 0
-        }
-    },
-    methods: {
-        exit: function() {
-            app.exit();
-        }
-    }
-};
-
-const ModifyView = {
-    template: `
-        <div class="column has-padding">
-            <h4 class="subtitle">Choose an option:</h4>
-
-            <a class="button is-dark is-medium" v-on:click="update">
-                Update
-            </a>
-            <br />
-            <br />
-            
-            <a class="button is-dark is-medium" v-on:click="modify_packages">
-                Modify
-            </a>
-            <br />
-            <br />
-            
-            <a class="button is-dark is-medium" v-on:click="prepare_uninstall">
-                Uninstall
-            </a>
-            
-            <div class="modal is-active" v-if="show_uninstall">
-                <div class="modal-background"></div>
-                <div class="modal-card">
-                    <header class="modal-card-head">
-                        <p class="modal-card-title">Are you sure you want to uninstall {{ $root.$data.attrs.name }}?</p>
-                    </header>
-                    <footer class="modal-card-foot">
-                        <button class="button is-danger" v-on:click="uninstall">Yes</button>
-                        <button class="button" v-on:click="cancel_uninstall">No</button>
-                    </footer>
-                </div>
-            </div>
-        </div>
-    `,
-    data: function() {
-        return {
-            show_uninstall: false
-        }
-    },
-    methods: {
-        update: function() {
-            router.push("/install/update");
-        },
-        modify_packages: function() {
-            router.push("/packages");
-        },
-        prepare_uninstall: function() {
-            this.show_uninstall = true;
-        },
-        cancel_uninstall: function() {
-            this.show_uninstall = false;
-        },
-        uninstall: function() {
-            router.push("/install/uninstall");
-        },
-    }
-};
-
-const router = new VueRouter({
-    routes: [
-        {
-            path: '/config',
-            name: 'config',
-            component: DownloadConfig
-        },
-        {
-            path: '/packages',
-            name: 'packages',
-            component: SelectPackages
-        },
-        {
-            path: '/install/:kind',
-            name: 'install',
-            component: InstallPackages
-        },
-        {
-            path: '/showerr',
-            name: 'showerr',
-            component: ErrorView
-        },
-        {
-            path: '/complete/:uninstall/:update/:packages_installed',
-            name: 'complete',
-            component: CompleteView
-        },
-        {
-            path: '/modify',
-            name: 'modify',
-            component: ModifyView
-        },
-        {
-            path: '/',
-            redirect: '/config'
-        }
-    ]
-});

ui/.browserslistrc

@@ -0,0 +1,3 @@
+> 1%
+last 2 versions
+not ie <= 11

ui/.editorconfig

@@ -0,0 +1,5 @@
+[*.{js,jsx,ts,tsx,vue}]
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+insert_final_newline = true

ui/.eslintrc.js

@@ -0,0 +1,17 @@
+module.exports = {
+  root: true,
+  env: {
+    node: true
+  },
+  'extends': [
+    'plugin:vue/essential',
+    '@vue/standard'
+  ],
+  rules: {
+    'no-console': process.env.NODE_ENV === 'production' ? 'error' : 'off',
+    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off'
+  },
+  parserOptions: {
+    parser: 'babel-eslint'
+  }
+}

ui/.gitignore

@@ -0,0 +1,21 @@
+.DS_Store
+node_modules
+/dist
+
+# local env files
+.env.local
+.env.*.local
+
+# Log files
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Editor directories and files
+.idea
+.vscode
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw*

ui/README.md

@@ -0,0 +1,29 @@
+# ui
+
+## Project setup
+```
+yarn install
+```
+
+### Compiles and hot-reloads for development
+```
+yarn run serve
+```
+
+### Compiles and minifies for production
+```
+yarn run build
+```
+
+### Run your tests
+```
+yarn run test
+```
+
+### Lints and fixes files
+```
+yarn run lint
+```
+
+### Customize configuration
+See [Configuration Reference](https://cli.vuejs.org/config/).

ui/babel.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  presets: [
+    '@vue/app'
+  ]
+}

ui/mock-server.js

@@ -0,0 +1,95 @@
+'use strict'
+
+const express = require('express')
+const app = express()
+const port = 3000
+
+function progressSimulation (res) {
+  var progress = 0.0
+  var timer = setInterval(() => {
+    var resp = JSON.stringify({ Status: ['Processing...', progress] }) + '\n'
+    progress += 0.1
+    res.write(resp)
+    if (progress >= 1) {
+      res.status(200).end()
+      clearInterval(timer)
+    }
+  }, 1500)
+}
+
+function returnConfig (res) {
+  res.json({
+    installing_message:
+      'Test Banner <strong>Bold</strong>&nbsp;<pre>Code block</pre>&nbsp;<i>Italic</i>&nbsp;<del>Strike</del>',
+    new_tool: null,
+    packages: [
+      {
+        name: 'Test 1',
+        description: 'LiftInstall GUI Test 1',
+        default: true,
+        source: {
+          name: 'github',
+          match: '^test$',
+          config: { repo: 'j-selby/liftinstall' }
+        },
+        shortcuts: []
+      },
+      {
+        name: 'Test 2',
+        description:
+          'Different Banner <strong>Bold</strong>&nbsp;<pre>Code block</pre>&nbsp;<i>Italic</i>&nbsp;<del>Strike</del>',
+        default: null,
+        source: {
+          name: 'github',
+          match: '^test2$',
+          config: { repo: 'j-selby/liftinstall' }
+        },
+        shortcuts: []
+      }
+    ],
+    hide_advanced: false
+  })
+}
+
+app.get('/api/attrs', (req, res) => {
+  res.send(
+    `var base_attributes = {"name":"yuzu","target_url":"https://raw.githubusercontent.com/j-selby/test-installer/master/config.linux.v2.toml"};`
+  )
+})
+
+app.get('/api/dark-mode', (req, res) => {
+  res.json(false)
+})
+
+app.get('/api/installation-status', (req, res) => {
+  res.json({
+    database: { packages: [], shortcuts: [] },
+    install_path: null,
+    preexisting_install: false,
+    is_launcher: false,
+    launcher_path: null
+  })
+})
+
+app.get('/api/default-path', (req, res) => {
+  res.json({ path: '/tmp/test/' })
+})
+
+app.get('/api/config', (req, res) => {
+  setTimeout(() => {
+    returnConfig(res)
+  }, 3000)
+})
+
+app.post('/api/start-install', (req, res) => {
+  console.log(`-- Install: ${req.body}`)
+  progressSimulation(res)
+})
+
+app.get('/api/exit', (req, res) => {
+  console.log('-- Exit')
+  res.status(204)
+})
+
+console.log(`Listening on ${port}...`)
+app.listen(port)

ui/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "ui",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "serve": "vue-cli-service serve",
+    "build": "vue-cli-service build",
+    "lint": "vue-cli-service lint"
+  },
+  "dependencies": {
+    "buefy": "^0.7.7",
+    "vue": "^2.6.6",
+    "vue-router": "^3.0.1"
+  },
+  "devDependencies": {
+    "@vue/cli-plugin-babel": "^3.5.0",
+    "@vue/cli-plugin-eslint": "^3.5.0",
+    "@vue/cli-service": "^3.5.0",
+    "@vue/eslint-config-standard": "^4.0.0",
+    "babel-eslint": "^10.0.1",
+    "eslint": "^5.8.0",
+    "eslint-plugin-vue": "^5.0.0",
+    "express": "^4.17.1",
+    "http-proxy-middleware": "^0.19.1",
+    "vue-template-compiler": "^2.5.21"
+  }
+}

ui/postcss.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  plugins: {
+    autoprefixer: {}
+  }
+}

ui/public/index.html

@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=11">
+    <meta name="viewport" content="width=device-width,initial-scale=1.0">
+    <script src="/api/attrs" type="text/javascript"></script>
+    <link rel="icon" href="<%= BASE_URL %>favicon.ico">
+    <title id="window-title">... Installer</title>
+  </head>
+  <body>
+    <div class="fullscreen" id="ie-blackout" style="display: none">
+        <div class="title">Your computer is out of date.</div>
+        <div class="subtitle">
+            Make sure that your computer is up to date, and that you have Internet Explorer 11 installed.
+        </div>
+        <div class="subtitle">
+            Please note we do not support pirated or unsupported versions of Windows.
+        </div>
+    </div>
+
+    <script type="text/javascript">
+        if (!document.__proto__) {
+            document.getElementById("ie-blackout").style.display = "block";
+        }
+    </script>
+
+    <noscript>
+      <strong>You need JavaScript enabled in your Windows Internet Options to install this application.</strong>
+    </noscript>
+
+    <div id="app"></div>
+    <!-- built files will be auto injected -->
+  </body>
+</html>

ui/src/App.vue

@@ -0,0 +1,129 @@
+<template>
+  <div id="app" class="is-max-height">
+        <section class="section is-max-height">
+            <div class="container is-max-height">
+                <div class="columns is-max-height">
+                    <div class="column is-one-third has-padding" v-if="!$root.$data.metadata.is_launcher">
+                        <img src="./assets/logo.png" width="60%" alt="Application icon" />
+                        <br />
+                        <br />
+
+                        <h2 class="subtitle" v-if="!$root.$data.metadata.preexisting_install">
+                            Welcome to the {{ $root.$data.attrs.name }} installer!
+                        </h2>
+                        <h2 class="subtitle" v-if="!$root.$data.metadata.preexisting_install">
+                            We will have you up and running in just a few moments.
+                        </h2>
+
+                        <h2 class="subtitle" v-if="$root.$data.metadata.preexisting_install">
+                            Welcome to the {{ $root.$data.attrs.name }} Maintenance Tool.
+                        </h2>
+                    </div>
+
+                    <router-view />
+                </div>
+            </div>
+        </section>
+    </div>
+</template>
+
+<style>
+/* roboto-regular - latin */
+@font-face {
+    font-family: 'Roboto';
+    font-style: normal;
+    font-weight: 400;
+    src: url('./assets/fonts/roboto-v18-latin-regular.eot'); /* IE9 Compat Modes */
+    src: local('Roboto'), local('Roboto-Regular'),
+    url('./assets/fonts/roboto-v18-latin-regular.woff2') format('woff2'), /* Super Modern Browsers */
+    url('./assets/fonts/roboto-v18-latin-regular.woff') format('woff');
+}
+
+html, body {
+    overflow: hidden;
+    height: 100%;
+}
+
+body, div, span, h1, h2, h3, h4, h5, h6 {
+    -webkit-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+    cursor: default;
+}
+
+pre {
+    -webkit-user-select: text;
+    -moz-user-select: text;
+    -ms-user-select: text;
+    user-select: text;
+    cursor: text;
+}
+
+.tile.is-child > .box {
+    height: 100%;
+}
+
+.has-padding {
+    padding: 2rem;
+    position: relative;
+}
+
+.clickable-box {
+    cursor: pointer;
+}
+
+.clickable-box label {
+    pointer-events: none;
+}
+
+.is-max-height {
+    height: 100%;
+}
+
+.is-bottom-floating {
+    position: absolute;
+    bottom: 0;
+}
+
+.is-top-floating {
+    position: absolute;
+    top: 0;
+}
+
+.is-right-floating {
+    position: absolute;
+    right: 0;
+}
+
+.has-padding .is-right-floating {
+    right: 1rem;
+}
+
+.is-left-floating {
+    position: absolute;
+    left: 0;
+}
+
+.has-padding .is-left-floating {
+    left: 1rem;
+}
+
+.fullscreen {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    width: 100%;
+    height: 100%;
+    z-index: 9999;
+    padding: 20px;
+    background: #fff;
+}
+
+/* Dark mode */
+body.has-background-black-ter .subtitle, body.has-background-black-ter .column > div {
+    color: hsl(0, 0%, 96%);
+}
+</style>

ui/src/helpers.js

@@ -0,0 +1,144 @@
+/**
+ * helpers.js
+ *
+ * Additional state-less helper methods.
+ */
+
+var request_id = 0
+
+/**
+ * Makes a AJAX request.
+ *
+ * @param path The path to connect to.
+ * @param successCallback A callback with a JSON payload.
+ * @param failCallback A fail callback. Optional.
+ * @param data POST data. Optional.
+ */
+export function ajax (path, successCallback, failCallback, data) {
+  if (failCallback === undefined) {
+    failCallback = defaultFailHandler
+  }
+
+  console.log('Making HTTP request to ' + path)
+
+  var req = new XMLHttpRequest()
+
+  req.addEventListener('load', function () {
+    // The server can sometimes return a string error. Make sure we handle this.
+    if (this.status === 200 && this.getResponseHeader('Content-Type').indexOf('application/json') !== -1) {
+      successCallback(JSON.parse(this.responseText))
+    } else {
+      failCallback(this.responseText)
+    }
+  })
+  req.addEventListener('error', failCallback)
+
+  req.open(data == null ? 'GET' : 'POST', path + '?nocache=' + request_id++, true)
+  // Rocket only currently supports URL encoded forms.
+  req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')
+
+  if (data != null) {
+    var form = ''
+
+    for (var key in data) {
+      if (!data.hasOwnProperty(key)) {
+        continue
+      }
+
+      if (form !== '') {
+        form += '&'
+      }
+
+      form += encodeURIComponent(key) + '=' + encodeURIComponent(data[key])
+    }
+
+    req.send(form)
+  } else {
+    req.send()
+  }
+}
+
+/**
+ * Makes a AJAX request, streaming each line as it arrives. Type should be text/plain,
+ * each line will be interpreted as JSON separately.
+ *
+ * @param path The path to connect to.
+ * @param callback A callback with a JSON payload. Called for every line as it comes.
+ * @param successCallback A callback with a raw text payload.
+ * @param failCallback A fail callback. Optional.
+ * @param data POST data. Optional.
+ */
+export function stream_ajax (path, callback, successCallback, failCallback, data) {
+  var req = new XMLHttpRequest()
+
+  console.log('Making streaming HTTP request to ' + path)
+
+  req.addEventListener('load', function () {
+    // The server can sometimes return a string error. Make sure we handle this.
+    if (this.status === 200) {
+      successCallback(this.responseText)
+    } else {
+      failCallback(this.responseText)
+    }
+  })
+
+  var buffer = ''
+  var seenBytes = 0
+
+  req.onreadystatechange = function () {
+    if (req.readyState > 2) {
+      buffer += req.responseText.substr(seenBytes)
+
+      var pointer
+      while ((pointer = buffer.indexOf('\n')) >= 0) {
+        var line = buffer.substring(0, pointer).trim()
+        buffer = buffer.substring(pointer + 1)
+
+        if (line.length === 0) {
+          continue
+        }
+
+        var contents = JSON.parse(line)
+        callback(contents)
+      }
+
+      seenBytes = req.responseText.length
+    }
+  }
+
+  req.addEventListener('error', failCallback)
+
+  req.open(data == null ? 'GET' : 'POST', path + '?nocache=' + request_id++, true)
+  // Rocket only currently supports URL encoded forms.
+  req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')
+
+  if (data != null) {
+    var form = ''
+
+    for (var key in data) {
+      if (!data.hasOwnProperty(key)) {
+        continue
+      }
+
+      if (form !== '') {
+        form += '&'
+      }
+
+      form += encodeURIComponent(key) + '=' + encodeURIComponent(data[key])
+    }
+
+    req.send(form)
+  } else {
+    req.send()
+  }
+}
+
+/**
+ * The default handler if a AJAX request fails. Not to be used directly.
+ *
+ * @param e The XMLHttpRequest that failed.
+ */
+function defaultFailHandler (e) {
+  console.error('A AJAX request failed, and was not caught:')
+  console.error(e)
+}

ui/src/main.js

@@ -0,0 +1,119 @@
+import Vue from 'vue'
+import App from './App.vue'
+import router from './router'
+import { ajax, stream_ajax } from './helpers'
+import Buefy from 'buefy'
+import 'buefy/dist/buefy.css'
+
+Vue.config.productionTip = false
+Vue.use(Buefy)
+
+// Borrowed from http://tobyho.com/2012/07/27/taking-over-console-log/
+function intercept (method) {
+  console[method] = function () {
+    var message = Array.prototype.slice.apply(arguments).join(' ')
+    window.external.invoke(
+      JSON.stringify({
+        Log: {
+          kind: method,
+          msg: message
+        }
+      })
+    )
+  }
+}
+
+// See if we have access to the JSON interface
+var has_external_interface = false;
+try {
+  window.external.invoke(JSON.stringify({
+    Test: {}
+  }))
+  has_external_interface = true;
+} catch (e) {
+  console.warn("Running without JSON interface - unexpected behaviour may occur!")
+}
+
+// Overwrite loggers with the logging backend
+if (has_external_interface) {
+  window.onerror = function (msg, url, line) {
+    window.external.invoke(
+      JSON.stringify({
+        Log: {
+          kind: 'error',
+          msg: msg + ' @ ' + url + ':' + line
+        }
+      })
+    )
+  }
+
+  var methods = ['log', 'warn', 'error']
+  for (var i = 0; i < methods.length; i++) {
+    intercept(methods[i])
+  }
+}
+
+// Disable F5
+function disable_shortcuts (e) {
+  switch (e.keyCode) {
+    case 116: // F5
+      e.preventDefault()
+      break
+  }
+}
+
+// Check to see if we need to enable dark mode
+ajax('/api/dark-mode', function (enable) {
+  if (enable) {
+    document.body.classList.add('has-background-black-ter')
+  }
+})
+
+window.addEventListener('keydown', disable_shortcuts)
+
+document.getElementById('window-title').innerText =
+  base_attributes.name + ' Installer'
+
+function selectFileCallback (name) {
+  app.install_location = name
+}
+
+var app = new Vue({
+  router: router,
+  data: {
+    attrs: base_attributes,
+    config: {},
+    install_location: '',
+    // If the option to pick an install location should be provided
+    show_install_location: true,
+    metadata: {
+      database: [],
+      install_path: '',
+      preexisting_install: false
+    }
+  },
+  render: function (caller) {
+    return caller(App)
+  },
+  methods: {
+    exit: function () {
+      ajax(
+        '/api/exit',
+        function () {},
+        function (msg) {
+          var search_location = app.metadata.install_path.length > 0 ? app.metadata.install_path :
+            "the location where this installer is";
+
+          app.$router.replace({ name: 'showerr', params: { msg: msg +
+                '\n\nPlease upload the log file (in ' + search_location + ') to ' +
+                'the ' + app.attrs.name + ' team'
+          }});
+        }
+      )
+    },
+    ajax: ajax,
+    stream_ajax: stream_ajax
+  }
+}).$mount('#app')
+
+console.log("Vue started")

ui/src/router.js

@@ -0,0 +1,49 @@
+import Vue from 'vue'
+import Router from 'vue-router'
+import DownloadConfig from './views/DownloadConfig.vue'
+import SelectPackages from './views/SelectPackages.vue'
+import ErrorView from './views/ErrorView.vue'
+import InstallPackages from './views/InstallPackages.vue'
+import CompleteView from './views/CompleteView.vue'
+import ModifyView from './views/ModifyView.vue'
+
+Vue.use(Router)
+
+export default new Router({
+  routes: [
+    {
+      path: '/config',
+      name: 'config',
+      component: DownloadConfig
+    },
+    {
+      path: '/packages',
+      name: 'packages',
+      component: SelectPackages
+    },
+    {
+      path: '/install/:kind',
+      name: 'install',
+      component: InstallPackages
+    },
+    {
+      path: '/showerr',
+      name: 'showerr',
+      component: ErrorView
+    },
+    {
+      path: '/complete/:uninstall/:update/:packages_installed',
+      name: 'complete',
+      component: CompleteView
+    },
+    {
+      path: '/modify',
+      name: 'modify',
+      component: ModifyView
+    },
+    {
+      path: '/',
+      redirect: '/config'
+    }
+  ]
+})

ui/src/views/CompleteView.vue

@@ -0,0 +1,50 @@
+<template>
+    <div class="column has-padding">
+            <div v-if="was_update">
+                <div v-if="has_installed">
+                    <h4 class="subtitle">{{ $root.$data.attrs.name }} has been updated.</h4>
+
+                    <p>You can find your installed applications in your start menu.</p>
+                </div>
+                <div v-else>
+                    <h4 class="subtitle">{{ $root.$data.attrs.name }} is already up to date!</h4>
+
+                    <p>You can find your installed applications in your start menu.</p>
+                </div>
+            </div>
+            <div v-else-if="was_install">
+                <h4 class="subtitle">Thanks for installing {{ $root.$data.attrs.name }}!</h4>
+
+                <p>You can find your installed applications in your start menu.</p>
+
+                <img src="../assets/how-to-open.png" alt="Where yuzu is installed"/>
+            </div>
+            <div v-else>
+                <h4 class="subtitle">{{ $root.$data.attrs.name }} has been uninstalled.</h4>
+            </div>
+
+            <div class="field is-grouped is-right-floating is-bottom-floating">
+                <p class="control">
+                    <a class="button is-dark is-medium" v-on:click="exit">Exit</a>
+                </p>
+            </div>
+    </div>
+</template>
+
+<script>
+export default {
+  name: 'CompleteView',
+  data: function () {
+    return {
+      was_install: !this.$route.params.uninstall,
+      was_update: this.$route.params.update,
+      has_installed: this.$route.params.packages_installed > 0
+    }
+  },
+  methods: {
+    exit: function () {
+      this.$root.exit()
+    }
+  }
+}
+</script>

ui/src/views/DownloadConfig.vue

@@ -0,0 +1,97 @@
+<template>
+    <div class="column has-padding">
+            <h4 class="subtitle">Downloading config...</h4>
+
+            <br />
+            <progress class="progress is-info is-medium" max="100">
+                0%
+            </progress>
+    </div>
+</template>
+
+<script>
+export default {
+  name: 'DownloadConfig',
+  created: function () {
+    this.download_install_status()
+  },
+  methods: {
+    download_install_status: function () {
+      var that = this
+      this.$root.ajax('/api/installation-status', function (e) {
+        that.$root.metadata = e
+
+        that.download_config()
+      })
+    },
+    download_config: function () {
+      var that = this
+      this.$root.ajax('/api/config', function (e) {
+        that.$root.config = e
+
+        that.choose_next_state()
+      }, function (e) {
+        console.error('Got error while downloading config: ' +
+                    e)
+
+        if (that.$root.metadata.is_launcher) {
+          // Just launch the target application
+          that.$root.exit()
+        } else {
+          that.$router.replace({ name: 'showerr',
+            params: { msg: 'Got error while downloading config: ' +
+                                e } })
+        }
+      })
+    },
+    choose_next_state: function () {
+      var app = this.$root
+      // Update the updater if needed
+      if (app.config.new_tool) {
+        this.$router.push('/install/updater')
+        return
+      }
+
+      if (app.metadata.preexisting_install) {
+        app.install_location = app.metadata.install_path
+
+        // Copy over installed packages
+        for (var x = 0; x < app.config.packages.length; x++) {
+          app.config.packages[x].default = false
+          app.config.packages[x].installed = false
+        }
+
+        for (var i = 0; i < app.metadata.database.packages.length; i++) {
+          // Find this config package
+          for (var x = 0; x < app.config.packages.length; x++) {
+            if (app.config.packages[x].name === app.metadata.database.packages[i].name) {
+              app.config.packages[x].default = true
+              app.config.packages[x].installed = true
+            }
+          }
+        }
+
+        if (app.metadata.is_launcher) {
+          this.$router.replace('/install/regular')
+        } else {
+          this.$router.replace('/modify')
+        }
+      } else {
+        for (var x = 0; x < app.config.packages.length; x++) {
+          app.config.packages[x].installed = false
+        }
+
+        // Need to do a bit more digging to get at the
+        // install location.
+        this.$root.ajax('/api/default-path', function (e) {
+          if (e.path != null) {
+            app.install_location = e.path
+          }
+        })
+
+        this.$router.replace('/packages')
+      }
+    }
+  }
+}
+</script>

ui/src/views/ErrorView.vue

@@ -0,0 +1,59 @@
+<template>
+  <div class="column" v-bind:class="{ 'has-padding': !$root.$data.metadata.is_launcher }">
+    <b-message title="An error occurred" type="is-danger" :closable="false">
+      <div id="error_msg" v-html="msg"></div>
+    </b-message>
+    <div class="field is-grouped is-right-floating" v-bind:class="{ 'is-bottom-floating': !$root.$data.metadata.is_launcher, 'is-top-floating': $root.$data.metadata.is_launcher }">
+      <p class="control">
+        <a class="button is-primary is-medium" v-if="remaining && !$root.$data.metadata.is_launcher" v-on:click="go_back">Back</a>
+        <a class="button is-primary is-medium" v-if="$root.$data.metadata.is_launcher" v-on:click="exit">Exit</a>
+      </p>
+    </div>
+  </div>
+</template>
+
+<style>
+.pre-wrap {
+  /* https://css-tricks.com/snippets/css/make-pre-text-wrap/ */
+  white-space: pre-wrap; /* css-3 */
+  white-space: -moz-pre-wrap; /* Mozilla, since 1999 */
+  white-space: -pre-wrap; /* Opera 4-6 */
+  white-space: -o-pre-wrap; /* Opera 7 */
+  word-wrap: break-word; /* Internet Explorer 5.5+ */
+}
+
+#error_msg {
+    -webkit-user-select: text;
+    -moz-user-select: text;
+    -ms-user-select: text;
+    user-select: text;
+    cursor: text;
+}
+</style>
+
+<script>
+export default {
+  name: 'ErrorView',
+  data: function () {
+    return {
+      // https://stackoverflow.com/questions/6234773/can-i-escape-html-special-chars-in-javascript
+      msg: this.$route.params.msg
+            .replace(/&/g, "&amp;")
+            .replace(/</g, "&lt;")
+            .replace(/>/g, "&gt;")
+            .replace(/"/g, "&quot;")
+            .replace(/'/g, "&#039;")
+            .replace(/\n/g, "<br />"),
+      remaining: window.history.length > 1
+    }
+  },
+  methods: {
+    go_back: function () {
+      this.$router.go(-1)
+    },
+    exit: function () {
+      this.$root.exit()
+    }
+  }
+}
+</script>

ui/src/views/InstallPackages.vue

@@ -0,0 +1,117 @@
+<template>
+    <div class="column has-padding">
+            <h4 class="subtitle" v-if="$root.$data.metadata.is_launcher || is_update">Checking for updates...</h4>
+            <h4 class="subtitle" v-else-if="is_uninstall">Uninstalling...</h4>
+            <h4 class="subtitle" v-else-if="is_updater_update">Downloading self-update...</h4>
+            <h4 class="subtitle" v-else>Installing...</h4>
+            <div v-html="$root.$data.config.installing_message"></div>
+            <br />
+
+            <div v-html="progress_message"></div>
+            <progress class="progress is-info is-medium" v-bind:value="progress" max="100">
+                {{ progress }}%
+            </progress>
+    </div>
+</template>
+
+<script>
+export default {
+  name: 'InstallPackages',
+  data: function () {
+    return {
+      progress: 0.0,
+      progress_message: 'Please wait...',
+      is_uninstall: false,
+      is_updater_update: false,
+      is_update: false,
+      failed_with_error: false,
+      packages_installed: 0
+    }
+  },
+  created: function () {
+    this.is_uninstall = this.$route.params.kind === 'uninstall'
+    this.is_updater_update = this.$route.params.kind === 'updater'
+    this.is_update = this.$route.params.kind === 'update'
+    console.log('Installer kind: ' + this.$route.params.kind)
+    this.install()
+  },
+  methods: {
+    install: function () {
+      var that = this
+      var app = this.$root
+
+      var results = {}
+
+      for (var package_index = 0; package_index < app.config.packages.length; package_index++) {
+        var current_package = app.config.packages[package_index]
+        if (current_package.default != null) {
+          results[current_package.name] = current_package.default
+        }
+      }
+
+      results['path'] = app.install_location
+
+      var targetUrl = '/api/start-install'
+      if (this.is_uninstall) {
+        targetUrl = '/api/uninstall'
+      }
+      if (this.is_updater_update) {
+        targetUrl = '/api/update-updater'
+      }
+
+      this.$root.stream_ajax(targetUrl, function (line) {
+        // On progress line received from server
+
+        if (line.hasOwnProperty('Status')) {
+          that.progress_message = line.Status[0]
+          that.progress = line.Status[1] * 100
+        }
+
+        if (line.hasOwnProperty('PackageInstalled')) {
+          that.packages_installed += 1
+        }
+
+        if (line.hasOwnProperty('Error')) {
+          that.failed_with_error = true
+          that.$router.replace({ name: 'showerr', params: { msg: line.Error } })
+        }
+      }, function (e) {
+        // On request completed
+
+        if (that.is_updater_update) {
+          // Continue with what we were doing
+          if (app.metadata.is_launcher) {
+            that.$router.replace('/install/regular')
+          } else {
+            if (app.metadata.preexisting_install) {
+              that.$router.replace('/modify')
+            } else {
+              that.$router.replace('/packages')
+            }
+          }
+        } else {
+          if (app.metadata.is_launcher) {
+            app.exit()
+          } else if (!that.failed_with_error) {
+            if (that.is_uninstall) {
+              that.$router.replace({ name: 'complete',
+                params: {
+                  uninstall: true,
+                  update: that.is_update,
+                  installed: that.packages_installed
+                } })
+            } else {
+              that.$router.replace({ name: 'complete',
+                params: {
+                  uninstall: false,
+                  update: that.is_update,
+                  installed: that.packages_installed
+                } })
+            }
+          }
+        }
+      }, undefined, results)
+    }
+  }
+}
+</script>

ui/src/views/ModifyView.vue

@@ -0,0 +1,62 @@
+<template>
+    <div class="column has-padding">
+            <h4 class="subtitle">Choose an option:</h4>
+
+            <a class="button is-dark is-medium" v-on:click="update">
+                Update
+            </a>
+            <br />
+            <br />
+
+            <a class="button is-dark is-medium" v-on:click="modify_packages">
+                Modify
+            </a>
+            <br />
+            <br />
+
+            <a class="button is-dark is-medium" v-on:click="prepare_uninstall">
+                Uninstall
+            </a>
+
+            <div class="modal is-active" v-if="show_uninstall">
+                <div class="modal-background"></div>
+                <div class="modal-card">
+                    <header class="modal-card-head">
+                        <p class="modal-card-title">Are you sure you want to uninstall {{ $root.$data.attrs.name }}?</p>
+                    </header>
+                    <footer class="modal-card-foot">
+                        <button class="button is-danger" v-on:click="uninstall">Yes</button>
+                        <button class="button" v-on:click="cancel_uninstall">No</button>
+                    </footer>
+                </div>
+            </div>
+    </div>
+</template>
+
+<script>
+export default {
+  name: 'ModifyView',
+  data: function () {
+    return {
+      show_uninstall: false
+    }
+  },
+  methods: {
+    update: function () {
+      this.$router.push('/install/update')
+    },
+    modify_packages: function () {
+      this.$router.push('/packages')
+    },
+    prepare_uninstall: function () {
+      this.show_uninstall = true
+    },
+    cancel_uninstall: function () {
+      this.show_uninstall = false
+    },
+    uninstall: function () {
+      this.$router.push('/install/uninstall')
+    }
+  }
+}
+</script>

ui/src/views/SelectPackages.vue

@@ -0,0 +1,87 @@
+<template>
+    <div class="column has-padding">
+            <h4 class="subtitle">Select which packages you want to install:</h4>
+
+            <!-- Build options -->
+            <div class="tile is-ancestor">
+                <div class="tile is-parent" v-for="Lpackage in $root.$data.config.packages" :key="Lpackage.name" :index="Lpackage.name">
+                    <div class="tile is-child">
+                        <div class="box clickable-box" v-on:click.capture.stop="Lpackage.default = !Lpackage.default">
+                            <label class="checkbox">
+                                <b-checkbox v-model="Lpackage.default">
+                                  {{ Lpackage.name }}
+                                </b-checkbox>
+                                <span v-if="Lpackage.installed"><i>(installed)</i></span>
+                            </label>
+                            <p>
+                                {{ Lpackage.description }}
+                            </p>
+                        </div>
+                    </div>
+                </div>
+            </div>
+
+            <div class="subtitle is-6" v-if="!$root.$data.metadata.preexisting_install && advanced">Install Location</div>
+            <div class="field has-addons" v-if="!$root.$data.metadata.preexisting_install && advanced">
+                <div class="control is-expanded">
+                    <input class="input" type="text" v-model="$root.$data.install_location"
+                           placeholder="Enter a install path here">
+                </div>
+                <div class="control">
+                    <a class="button is-dark" v-on:click="select_file">
+                        Select
+                    </a>
+                </div>
+            </div>
+
+            <div class="is-right-floating is-bottom-floating">
+                <div class="field is-grouped">
+                    <p class="control">
+                        <a class="button is-medium" v-if="!$root.$data.config.hide_advanced && !$root.$data.metadata.preexisting_install && !advanced"
+                           v-on:click="advanced = true">Advanced...</a>
+                    </p>
+                    <p class="control">
+                        <a class="button is-dark is-medium" v-if="!$root.$data.metadata.preexisting_install"
+                           v-on:click="install">Install</a>
+                    </p>
+                    <p class="control">
+                        <a class="button is-dark is-medium" v-if="$root.$data.metadata.preexisting_install"
+                           v-on:click="install">Modify</a>
+                    </p>
+                </div>
+            </div>
+
+            <div class="field is-grouped is-left-floating is-bottom-floating">
+                <p class="control">
+                    <a class="button is-medium" v-if="$root.$data.metadata.preexisting_install"
+                       v-on:click="go_back">Back</a>
+                </p>
+            </div>
+        </div>
+</template>
+
+<script>
+export default {
+  name: 'SelectPackages',
+  data: function () {
+    return {
+      advanced: false
+    }
+  },
+  methods: {
+    select_file: function () {
+      window.external.invoke(JSON.stringify({
+        SelectInstallDir: {
+          callback_name: 'selectFileCallback'
+        }
+      }))
+    },
+    install: function () {
+      this.$router.push('/install/regular')
+    },
+    go_back: function () {
+      this.$router.go(-1)
+    }
+  }
+}
+</script>

ui/vue.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  devServer: {
+    proxy: 'http://127.0.0.1:3000'
+  },
+  filenameHashing: false
+}