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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644 (file)
index 0000000..fc05edd
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[workspace]
+
+members = [
+    "backend",
+    "common",
+]
+
+[profile.release]
+codegen-units = 1
+lto = true

diff --git a/README.md b/README.md
new file mode 100644 (file)
index 0000000..cb98b07
--- /dev/null
+++ b/README.md
@@ -0,0 +1,15 @@
+# Setup\r
+\r
+## Sass\r
+\r
+Sass is needed to generate the CSS file (backend/static/style.css) from the SASS file (backend/style.scss).\r
+\r
+\r
+## Run backend\r
+\r
+* use the command 'Cargo run' in the backend directory (not in the root directory).\r
+\r
+\r
+## Autoreload\r
+\r
+https://actix.rs/docs/autoreload/
\ No newline at end of file

diff --git a/TODO.md b/TODO.md
new file mode 100644 (file)
index 0000000..c3b9825
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,14 @@
+# TODO\r
+\r
+# Ideas\r
+\r
+* Some ideas from https://demo.mcmyadmin.com/\r
+\r
+* Display the server status: (cpu usage/memory usage/ disk usage)\r
+* Display a realtime console\r
+* Can manage users:\r
+  * See the online player\r
+  * Add/remove to banlist\r
+  * Add/remove to adminlist\r
+* Access to server configuration\r
+* Manage backups
\ No newline at end of file

diff --git a/backend/Cargo.toml b/backend/Cargo.toml
new file mode 100644 (file)
index 0000000..1c51617
--- /dev/null
+++ b/backend/Cargo.toml
@@ -0,0 +1,33 @@
+[package]
+name = "minecraft_web"
+version = "1.0.0"
+authors = ["Grégory Burri <greg.burri@gmail.com>"]
+edition = "2018"
+
+[dependencies]
+actix-web = "3"
+actix-files = "0.5"
+serde = { version = "1.0", features = ["derive"] }
+
+ron = "0.6" # Rust object notation, to load configuration files.
+itertools = "0.10"
+
+chrono = "0.4"
+
+sysinfo = "0.18"
+
+cached = "0.23"
+
+futures = "0.3" # Needed by askam with the feature 'with-actix-web'.
+
+common = { path = "../common" }
+
+askama_actix = "0.11"
+
+# Template system.
+[dependencies.askama]
+version = "0.10"
+features = ["with-actix-web"]
+
+[target.'cfg(unix)'.dependencies]
+systemd = "0.9"
\ No newline at end of file

diff --git a/backend/build.rs b/backend/build.rs
new file mode 100644 (file)
index 0000000..012f651
--- /dev/null
+++ b/backend/build.rs
@@ -0,0 +1,46 @@
+/*
+Additionnal build, doc: https://doc.rust-lang.org/cargo/reference/build-scripts.html
+
+What is build here:
+ - Compile the SASS file to CSS file.
+*/
+
+use std::{ env, process::{ Command, Output }, path::Path };
+
+fn exists_in_path<P>(filename: P) -> bool
+    where P: AsRef<Path> {
+        for path in env::split_paths(&env::var_os("PATH").unwrap()) {
+            if path.join(&filename).is_file() { return true; }
+        }
+    false
+}
+
+fn main() {
+    println!("cargo:rerun-if-changed=style.scss");
+
+    fn run_sass(command: &mut Command) -> Output {
+        command
+            .arg("style.scss")
+            .arg("static/style.css")
+            .output()
+            .expect("Unable to compile SASS file, install SASS, see https://sass-lang.com/")
+    }
+
+    // Create static directory if it doesn't exist.
+    if !Path::new("static").exists() {
+        std::fs::create_dir("static").unwrap();
+    }
+
+    let output =
+        if exists_in_path("sass.bat") {
+            run_sass(Command::new("cmd").args(&["/C", "sass.bat"]))
+        } else {
+            run_sass(&mut Command::new("sass"))
+        };
+
+    if !output.status.success() {
+        // SASS will put the error in the file.
+        let error = std::fs::read_to_string("./static/style.css").expect("unable to read style.css");
+        panic!("Error from SASS: {}", error);
+    }
+}

diff --git a/backend/launch_debug.ps1 b/backend/launch_debug.ps1
new file mode 100644 (file)
index 0000000..c0ed2bc
--- /dev/null
+++ b/backend/launch_debug.ps1
@@ -0,0 +1,2 @@
+# To launch the web server and watching source. See https://actix.rs/docs/autoreload/.\r
+cargo watch -x 'run'
\ No newline at end of file

diff --git a/backend/src/consts.rs b/backend/src/consts.rs
new file mode 100644 (file)
index 0000000..c220a87
--- /dev/null
+++ b/backend/src/consts.rs
@@ -0,0 +1 @@
+pub const FILE_CONF: &str = "conf.ron";
\ No newline at end of file

diff --git a/backend/src/main.rs b/backend/src/main.rs
new file mode 100644 (file)
index 0000000..53fbe68
--- /dev/null
+++ b/backend/src/main.rs
@@ -0,0 +1,152 @@
+extern crate askama;
+
+use std::{ sync::Mutex, env::args, fs::File, io::prelude::* };
+
+use actix_files as fs;
+use actix_web::{ get, web, Responder, middleware, App, HttpServer };
+use askama::Template;
+use ron::{ de::from_reader, ser::{ to_string_pretty, PrettyConfig } };
+use serde::{ Deserialize, Serialize };
+use cached::proc_macro::cached;
+
+mod consts;
+mod tests;
+mod minecraft_controller;
+
+#[derive(Template)]
+#[template(path = "main.html")]
+struct MainTemplate {
+    text_status: String,
+    memory: String,
+    load_average: String,
+    uptime: String,
+    world_size: String,
+    active_players: String,
+    last_backup: String,
+}
+
+const VALUE_UNKNOWN: &str = "-";
+
+#[cached(size = 1, time = 10)]
+fn get_minecraft_executable_information_cached(world_path: String, backup_path: String) -> Option<minecraft_controller::MinecraftExe> {
+    minecraft_controller::get_minecraft_executable_information(&world_path, &backup_path)
+}
+
+#[get("/")]
+async fn main_page(config_shared: web::Data<Mutex<Config>>) -> impl Responder {
+    let config = config_shared.lock().unwrap();
+
+    match get_minecraft_executable_information_cached(config.world_path.clone(), config.backup_path.clone()) {
+        Some(info) =>
+            MainTemplate {
+                text_status: String::from("Minecraft server is up and running :)"),
+                memory: info.format_memory(),
+                load_average: info.format_load_average(),
+                uptime: info.format_uptime(),
+                world_size: info.format_world_size(),
+                active_players: info.format_active_players(),
+                last_backup: info.format_last_backup()
+            },
+        None => {
+            let value_unknown = String::from(VALUE_UNKNOWN);
+            MainTemplate {
+                text_status: String::from("Minecraft server is down :("),
+                memory: value_unknown.clone(),
+                load_average: value_unknown.clone(),
+                uptime: value_unknown.clone(),
+                world_size: value_unknown.clone(),
+                active_players: value_unknown.clone(),
+                last_backup: value_unknown.clone() }
+        }
+    }
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+struct Config {
+    port: u16,
+
+    #[serde(default = "empty_string")]
+    rcon_password: String,
+
+    #[serde(default = "empty_string")]
+    world_path: String,
+
+    #[serde(default = "empty_string")]
+    backup_path: String,
+}
+
+fn empty_string() -> String { "".to_owned() }
+
+impl Config {
+    fn default() -> Self {
+        Config { port: 8083, rcon_password: String::from(""), world_path: String::from(""), backup_path: String::from("") }
+    }
+}
+
+fn get_exe_name() -> String {
+    let first_arg = std::env::args().next().unwrap();
+    let sep: &[_] = &['\\', '/'];
+    first_arg[first_arg.rfind(sep).unwrap()+1..].to_string()
+}
+
+fn load_config() -> Config {
+    // unwrap_or_else(|_| panic!("Failed to open configuration file {}", consts::FILE_CONF));
+    match File::open(consts::FILE_CONF) {
+        Ok(file) => from_reader(file).unwrap_or_else(|_| panic!("Failed to open configuration file {}", consts::FILE_CONF)),
+        Err(_) => {
+            let mut file = File::create(consts::FILE_CONF) .unwrap();
+            let default_config = Config::default();
+            file.write_all(to_string_pretty(&default_config, PrettyConfig::new()).unwrap().as_bytes()).unwrap(); // We do not use 'to_writer' because it can't pretty format the output.
+            default_config
+        }
+    }
+}
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    let config = load_config();
+    let port = config.port;
+
+    if process_args(&config) { return Ok(()) }
+
+    println!("Starting Minecraft Admin as web server...");
+
+    println!("Configuration: {:?}", config);
+
+    let config_shared = web::Data::new(Mutex::new(config));
+
+    let server =
+        HttpServer::new(
+            move || {
+                App::new()
+                    .app_data(config_shared.clone())
+                    .wrap(middleware::Compress::default())
+                    .wrap(middleware::Logger::default())
+                    .service(main_page)
+                    .service(fs::Files::new("/static", "static").show_files_listing())
+            }
+        )
+        .bind(&format!("0.0.0.0:{}", port))
+        .unwrap();
+
+    server.run().await
+}
+
+fn process_args(config: &Config) -> bool {
+    fn print_usage() {
+        println!("Usage:");
+        println!(" {} [--help] [--status]", get_exe_name());
+    }
+
+    let args: Vec<String> = args().collect();
+
+    if args.iter().any(|arg| arg == "--help") {
+        print_usage();
+        return true
+    } else if args.iter().any(|arg| arg == "--status") {
+        println!("{:?}", minecraft_controller::get_minecraft_executable_information(&config.world_path, &config.backup_path));
+        return true
+    }
+
+    false
+}

diff --git a/backend/src/minecraft_controller.rs b/backend/src/minecraft_controller.rs
new file mode 100644 (file)
index 0000000..05ffeb3
--- /dev/null
+++ b/backend/src/minecraft_controller.rs
@@ -0,0 +1,180 @@
+use sysinfo::{ ProcessExt, SystemExt };\r
+\r
+use std::{ fs, time::SystemTime };\r
+\r
+use chrono::{ DateTime, offset::Local };\r
+\r
+#[cfg(target_os = "linux")]\r
+use systemd::journal;\r
+\r
+#[derive(Clone, Debug)]\r
+pub struct MinecraftExe {\r
+    memory: u64, // [kB].\r
+    load_average_5min: f64, // [%].\r
+    uptime: u64, // [s].\r
+    world_size: u64, // [B].\r
+    active_players: Vec<String>,\r
+    last_backup: Option<SystemTime>,\r
+}\r
+\r
+impl MinecraftExe {\r
+    pub fn format_memory(&self) -> String {\r
+        format_byte_size(self.memory * 1024, 2)\r
+    }\r
+\r
+    pub fn format_load_average(&self) -> String {\r
+        format!("{:.2} %", self.load_average_5min)\r
+    }\r
+\r
+    pub fn format_uptime(&self) -> String {\r
+        let mins = self.uptime / 60;\r
+        let hours = mins / 60;\r
+        let days = hours / 24;\r
+        format!("{}d {}h {}min", days, hours - 24 * days, mins - 60 * hours)\r
+    }\r
+\r
+    pub fn format_world_size(&self) -> String {\r
+        format_byte_size(self.world_size, 2)\r
+    }\r
+\r
+    pub fn format_active_players(&self) -> String {\r
+        /* Commented because the player list isn't correct (the number is).\r
+        if self.active_players.len() == 0 {\r
+            String::from("<none>")\r
+        } else {\r
+            self.active_players.join(", ")\r
+        }*/\r
+        self.active_players.len().to_string()\r
+    }\r
+\r
+    pub fn format_last_backup(&self) -> String {\r
+        match self.last_backup {\r
+            Some(t) => {\r
+                let datetime: DateTime<Local> = t.into();\r
+                datetime.format("%d/%m/%Y %T").to_string()\r
+            },\r
+            None => String::from("?")\r
+        }\r
+    }\r
+}\r
+\r
+const BINARY_PREFIXES: [&str; 8] = ["B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB"];\r
+\r
+fn format_byte_size(bytes: u64, precision: usize) -> String {\r
+    for i in 0 .. 8 {\r
+        let mut size: u64 = 1;\r
+        size *= 1024u64.pow(i as u32);\r
+\r
+        if bytes < 1024 {\r
+            return format!("{} {}", std::cmp::max(0u64, bytes), BINARY_PREFIXES[i]);\r
+        }\r
+        else if bytes < 1024 * size {\r
+            return format!("{:.prec$} {}", bytes as f64 / size as f64, BINARY_PREFIXES[i], prec = precision);\r
+        }\r
+    }\r
+\r
+    String::from("")\r
+}\r
+\r
+const MINECRAFT_PROCESS_NAME: &str = "minecraft_server";\r
+\r
+#[cfg(target_os = "linux")]\r
+const STRING_BEFORE_CHARACTER_NAME: &str = "Got character ZDOID from";\r
+\r
+#[cfg(target_os = "linux")]\r
+const STRING_BEFORE_NB_OF_CONNECTIONS: &str = "Connections";\r
+\r
+// It doesn't work for the moment, it only scan the connection event and do not treat disconnections.\r
+#[cfg(target_os = "linux")]\r
+fn get_active_players() -> Vec<String> {\r
+    let mut journal =\r
+        journal::OpenOptions::default().current_user(true).open().unwrap();\r
+\r
+    journal.seek_tail().unwrap();\r
+\r
+    let mut number_of_connections = -1i32;\r
+    let mut players : Vec<String> = Vec::new();\r
+\r
+    loop {\r
+        match journal.previous_entry() {\r
+            Ok(Some(entry)) => {\r
+                if let (Some(unit), Some(mess)) = (entry.get("_SYSTEMD_UNIT"), entry.get("MESSAGE")) {\r
+                    if unit == "minecraft.service" {\r
+                        if let Some(pos) = mess.find(STRING_BEFORE_CHARACTER_NAME) {\r
+                            let character_str = mess.get(pos+STRING_BEFORE_CHARACTER_NAME.len()+1..).unwrap();\r
+                            if let Some(pos_end) = character_str.find(" : ") {\r
+                                let player_name = String::from(character_str.get(0..pos_end).unwrap());\r
+                                if !players.contains(&player_name) {\r
+                                    players.push(player_name);\r
+                                    if players.len() as i32 == number_of_connections {\r
+                                        return players;\r
+                                    }\r
+                                }\r
+                            }\r
+                        }\r
+                        else if let Some(pos) = mess.find(STRING_BEFORE_NB_OF_CONNECTIONS) {\r
+                            let nb_of_connections_str = mess.get(pos+STRING_BEFORE_NB_OF_CONNECTIONS.len()+1..).unwrap();\r
+                            if let Some(pos_end) = nb_of_connections_str.find(' ') {\r
+                                if let Ok(n) = nb_of_connections_str.get(0..pos_end).unwrap().parse::<i32>() {\r
+                                    if number_of_connections == -1 {\r
+                                        number_of_connections = n;\r
+\r
+                                        if players.len() as i32 >= number_of_connections {\r
+                                            return players;\r
+                                        }\r
+                                    }\r
+                                }\r
+                            }\r
+                        }\r
+                    }\r
+                }\r
+            },\r
+            _ => return players\r
+        }\r
+    }\r
+}\r
+\r
+#[cfg(target_os = "windows")]\r
+fn get_active_players() -> Vec<String> {\r
+    Vec::new()\r
+}\r
+\r
+fn get_last_backup_datetime(backup_path: &str) -> Option<SystemTime> {\r
+    let mut times =\r
+        fs::read_dir(backup_path).ok()?.filter_map(\r
+            |e| {\r
+                let dir = e.ok()?;\r
+                if dir.path().is_file() { Some(dir.metadata().ok()?.modified().ok()?) } else { None }\r
+            }\r
+        )\r
+        .collect::<Vec<SystemTime>>();\r
+\r
+    times.sort();\r
+\r
+    Some(times.last()?.clone())\r
+}\r
+\r
+pub fn get_minecraft_executable_information(world_path: &str, backup_path: &str) -> Option<MinecraftExe> {\r
+    let mut system = sysinfo::System::new_all();\r
+    system.refresh_system();\r
+    let processes = system.get_process_by_name(MINECRAFT_PROCESS_NAME);\r
+\r
+    if processes.len() >= 1 {\r
+        let process = processes.first().unwrap();\r
+\r
+        let world_size = match std::fs::metadata(world_path) { Ok(f) => f.len(), Err(_) => 0u64 };\r
+\r
+        Some(\r
+            MinecraftExe {\r
+                memory: process.memory(),\r
+                load_average_5min: system.get_load_average().five / system.get_processors().len() as f64 * 100.,\r
+                uptime: std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap().as_secs() - process.start_time(),\r
+                world_size,\r
+                active_players: get_active_players(),\r
+                last_backup: get_last_backup_datetime(backup_path)\r
+            }\r
+        )\r
+    } else {\r
+        None\r
+    }\r
+}\r

diff --git a/backend/src/tests.rs b/backend/src/tests.rs
new file mode 100644 (file)
index 0000000..0ee7ce1
--- /dev/null
+++ b/backend/src/tests.rs
@@ -0,0 +1,6 @@
+//use minecraft_controller::*;\r
+\r
+#[test]\r
+fn test1() {\r
+    assert_eq!(2, 1 + 1);\r
+}
\ No newline at end of file

diff --git a/backend/static/FiraCode-Bold.woff2 b/backend/static/FiraCode-Bold.woff2
new file mode 100644 (file)
index 0000000..d8b3179
Binary files /dev/null and b/backend/static/FiraCode-Bold.woff2 differ

diff --git a/backend/static/FiraCode-Light.woff2 b/backend/static/FiraCode-Light.woff2
new file mode 100644 (file)
index 0000000..9cb6aee
Binary files /dev/null and b/backend/static/FiraCode-Light.woff2 differ

diff --git a/backend/static/FiraCode-Medium.woff2 b/backend/static/FiraCode-Medium.woff2
new file mode 100644 (file)
index 0000000..dfeb9de
Binary files /dev/null and b/backend/static/FiraCode-Medium.woff2 differ

diff --git a/backend/static/FiraCode-Regular.woff2 b/backend/static/FiraCode-Regular.woff2
new file mode 100644 (file)
index 0000000..1979211
Binary files /dev/null and b/backend/static/FiraCode-Regular.woff2 differ

diff --git a/backend/static/FiraCode-SemiBold.woff2 b/backend/static/FiraCode-SemiBold.woff2
new file mode 100644 (file)
index 0000000..ecec57d
Binary files /dev/null and b/backend/static/FiraCode-SemiBold.woff2 differ

diff --git a/backend/style.scss b/backend/style.scss
new file mode 100644 (file)
index 0000000..86598bd
--- /dev/null
+++ b/backend/style.scss
@@ -0,0 +1,38 @@
+@font-face{font-family: Fira Code; font-weight:200; src:url(FiraCode-Light.woff2) format("woff2"); }
+@font-face{font-family: Fira Code; font-weight:400; src:url(FiraCode-Regular.woff2) format("woff2"); }
+@font-face{font-family: Fira Code; font-weight:600; src:url(FiraCode-SemiBold.woff2) format("woff2"); }
+@font-face{font-family: Fira Code; font-weight:700; src:url(FiraCode-Bold.woff2) format("woff2"); }
+
+body {
+  font-family: Fira Code, Helvetica Neue, Helvetica, Arial, sans-serif;
+  color: #bdbdbd;
+  background-color: #252525;
+}
+
+table {
+  margin: 10px;
+  border: 0px;
+  border-collapse: collapse;
+}
+
+table td {
+  padding: 5px
+}
+
+table tr:nth-child(even) {
+  background-color: #1a1a1a;
+}
+
+h1 {
+  font-size: x-large;
+  margin: 20px;
+}
+
+p {
+  font-size: medium;
+  margin: 12px;
+}
+
+img {
+  border: 0px;
+}

diff --git a/backend/templates/main.html b/backend/templates/main.html
new file mode 100644 (file)
index 0000000..fc2905f
--- /dev/null
+++ b/backend/templates/main.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>\r
+<html lang="en">\r
+    <head>\r
+        <meta charset="utf-8" />\r
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />\r
+        <title>MINECRAFT - SERVER ADMIN</title>\r
+        <link rel="stylesheet" type="text/css" href="static/style.css" />\r
+    </head>\r
+\r
+    <body>\r
+        <div class="container">\r
+            <h1>{{ text_status }}</h1>\r
+            <table>\r
+                <tr><td>Active players</td><td>{{ active_players }}</td>\r
+                <tr><td>World size</td><td>{{ world_size }}</td></tr>\r
+                <tr><td>Memory used</td><td>{{ memory }}</td></tr>\r
+                <tr><td>Load average (5 min)</td><td>{{ load_average }}</td></tr>\r
+                <tr><td>Uptime</td><td>{{ uptime }}</td></tr>\r
+                <tr><td>Last backup</td><td>{{ last_backup }}</td></tr>\r
+            </table>\r
+        </div>\r
+    </body>\r
+</html>
\ No newline at end of file

diff --git a/common/Cargo.toml b/common/Cargo.toml
new file mode 100644 (file)
index 0000000..cf6ec79
--- /dev/null
+++ b/common/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "common"
+version = "0.1.0"
+authors = ["Grégory Burri <greg.burri@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[dependencies]
+
+
+[profile.release]
+codegen-units = 1
+lto = true
+panic = 'abort'

diff --git a/common/src/lib.rs b/common/src/lib.rs
new file mode 100644 (file)
index 0000000..3d80a04
--- /dev/null
+++ b/common/src/lib.rs
@@ -0,0 +1,14 @@
+/*
+fn f(a: i32, b: i32) -> i32 {
+    a + 2 * b
+}
+
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}
+*/
\ No newline at end of file

diff --git a/deploy.ps1 b/deploy.ps1
new file mode 100644 (file)
index 0000000..00c0830
--- /dev/null
+++ b/deploy.ps1
@@ -0,0 +1,31 @@
+#!/usr/bin/env pwsh
+
+if ($args.Count -lt 1) {
+   $scriptName = [Environment]::GetCommandLineArgs()[1]
+   Write-Output "Usage: $scriptName <destination>"
+   exit 1
+}
+
+git pull
+cargo build --release
+
+systemctl --user stop minecraft_web
+
+$destination=$args[0]
+
+if (!(Test-Path -Path $destination)) {
+   New-Item -ItemType directory -Path $destination
+}
+
+strip target/release/minecraft_web # To reduce the executable size.
+Copy-Item target/release/minecraft_web -Destination $destination
+
+Copy-Item backend/static -Destination $destination -Recurse -Force -Exclude style.css.map
+
+# Do not overwrite the configuration.
+if (!(Test-Path -Path $destination/conf.ron)) {
+   Copy-Item backend/conf.ron -Destination $destination
+}
+
+systemctl --user start minecraft_web
+

diff --git a/doc/minecraft_web.service b/doc/minecraft_web.service
new file mode 100644 (file)
index 0000000..740c3be
--- /dev/null
+++ b/doc/minecraft_web.service
@@ -0,0 +1,14 @@
+[Unit]
+Description=minecraft_web
+
+[Service]
+WorkingDirectory=/var/www/minecraft_web
+ExecStart=/var/www/minecraft_web/minecraft_web
+SyslogIdentifier=minecraft_web
+Restart=always
+RestartSec=10
+KillSignal=SIGINT
+
+[Install]
+WantedBy=default.target
+