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"serde",
"stable_deref_trait",
"yoke-derive",
"zerofrom",
]
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]
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]
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name = "zerovec-derive"
version = "0.10.3"
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dependencies = [
"proc-macro2",
"quote",
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]

@ -0,0 +1,10 @@
[package]
name = "mclaunch"
version = "0.1.0"
edition = "2021"
[dependencies]
rayon = "1.10.0"
serde = "1.0.216"
serde_json = "1.0.133"
ureq = "2.12.1"

@ -0,0 +1,241 @@
use ureq;
use serde_json;
use rayon::prelude::*;
fn main() {
// Grab minecraft version manifest
let response = ureq::get("https://launchermeta.mojang.com/mc/game/version_manifest.json").call();
let version_manifest = response.unwrap().into_string().unwrap();
// Get the list of all versions
let version_manifest: serde_json::Value = serde_json::from_str(&version_manifest).unwrap();
let version_objs = version_manifest["versions"].as_array().unwrap();
let _version_ids: Vec<String> = version_objs.iter().map(|v| v["id"].as_str().unwrap().to_string()).collect();
// Grab version 1.20.1
let latest = version_objs.iter().find(|v| v["id"].as_str().unwrap() == "1.15").unwrap();
// Grab the version's json
let response = ureq::get(latest["url"].as_str().unwrap()).call();
// Version URL
println!("Version URL: {}", latest["url"].as_str().unwrap());
let version_json = response.unwrap().into_string().unwrap();
let version_json: serde_json::Value = serde_json::from_str(&version_json).unwrap();
println!("Latest version jar: {}", version_json["downloads"]["client"]["url"].as_str().unwrap());
// Grab the list of library URLs
let libraries = version_json["libraries"].as_array().unwrap();
let mut library_urls: Vec<String> = Vec::new();
for l in libraries {
// Check the rules for linux
if l["rules"].is_array() {
let rules = l["rules"].as_array().unwrap();
if rules.iter().any(|r| r["action"].as_str().unwrap_or("deny") == "allow" && r["os"]["name"].as_str().unwrap_or("linux") != "osx"){
let url = l["downloads"]["artifact"]["url"].as_str();
if url.is_some() {
library_urls.push(String::from(url.unwrap()));
} else {
println!("Artifact URL not found: {:?}", l);
}
}
} else {
let url = l["downloads"]["artifact"]["url"].as_str();
if url.is_some() {
library_urls.push(String::from(url.unwrap()));
} else {
println!("Artifact URL not found: {:?}", l);
}
}
}
let native_urls: Vec<String> = libraries.iter().filter_map(|l| {
if l["downloads"]["classifiers"].is_object() {
let classifiers = l["downloads"]["classifiers"].as_object().unwrap();
if classifiers.contains_key("natives-linux") {
return Some(String::from(classifiers["natives-linux"]["url"].as_str().unwrap()));
}
// if classifiers.contains_key("natives-windows") {
// return Some(String::from(classifiers["natives-windows"]["url"].as_str().unwrap()));
// }
// if classifiers.contains_key("natives-osx") {
// return Some(String::from(classifiers["natives-osx"]["url"].as_str().unwrap()));
// }
}
None
}).collect();
println!("Library URLs: {:?}", library_urls);
// Grab the asset index
let asset_index = version_json["assetIndex"].as_object().unwrap();
println!("Asset index url: {}", asset_index["url"].as_str().unwrap());
// Grab the asset index json
let response = ureq::get(asset_index["url"].as_str().unwrap()).call();
let asset_index_json = response.unwrap().into_string().unwrap();
let asset_index_json: serde_json::Value = serde_json::from_str(&asset_index_json).unwrap();
// Save the asset index into indexes
std::fs::create_dir_all("assets/indexes").unwrap();
std::fs::write(format!("assets/indexes/{}.json", asset_index["id"].as_str().unwrap()), asset_index_json.to_string()).unwrap();
// Download all the assets in parallel
let objects = asset_index_json["objects"].as_object().unwrap().to_owned();
let objects_vec: Vec<serde_json::Value> = objects.iter().map(|(_key, value)| value.clone()).collect();
std::fs::create_dir_all("assets/objects/").unwrap();
let index: std::sync::Mutex<i32> = std::sync::Mutex::new(0);
// Wait for all downloads to finish
objects_vec.par_iter().map(|value| {
// Print progress in percent
println!("{}%", ((*index.lock().unwrap() as f32 / objects.len() as f32) * 100.0) as i32);
let hash = value["hash"].as_str().unwrap();
let hash_prefix = &hash[0..2];
// Skip if the asset already exists
*index.lock().unwrap() += 1;
if std::fs::metadata(format!("assets/objects/{}/{}", hash_prefix, hash)).is_ok() {
return;
}
let asset_url = format!("https://resources.download.minecraft.net/{}/{}", hash_prefix, hash);
println!("Downloading asset: {}", asset_url);
let response = ureq::get(&asset_url).call();
let response = response.unwrap();
let len: usize = response.header("Content-Length")
.unwrap()
.parse().unwrap();
let mut bytes: Vec<u8> = Vec::with_capacity(len);
response.into_reader()
.read_to_end(&mut bytes).unwrap();
// Make hash prefix dir
std::fs::create_dir_all(format!("assets/objects/{}", hash_prefix)).unwrap();
// Write the asset
std::fs::write(format!("assets/objects/{}/{}", hash_prefix, hash), bytes).unwrap();
}).collect::<Vec<_>>();
// Download the client jar
let response =
ureq::get(version_json["downloads"]["client"]["url"].as_str().unwrap()).call();
let response = response.unwrap();
let len: usize = response.header("Content-Length")
.unwrap()
.parse().unwrap();
let mut bytes: Vec<u8> = Vec::with_capacity(len);
response.into_reader()
.read_to_end(&mut bytes).unwrap();
std::fs::create_dir_all("versions").unwrap();
std::fs::write(format!("versions/{}.jar", latest["id"].as_str().unwrap()), bytes).unwrap();
// Download the libraries
println!("Downloading libraries");
let mut index: i32 = 0;
let library_len = library_urls.len();
for library_url in &library_urls {
println!("{}%", ((index as f32 / library_len as f32) * 100.0) as i32);
// Skip if the library already exists
index += 1;
if std::fs::metadata(format!("libraries/{}", library_url.split("/").last().unwrap())).is_ok() {
continue;
}
let response = ureq::get(&library_url).call();
let response = response.unwrap();
let len: usize = response.header("Content-Length")
.unwrap()
.parse().unwrap();
let mut bytes: Vec<u8> = Vec::with_capacity(len);
response.into_reader()
.read_to_end(&mut bytes).unwrap();
let path = format!("libraries/{}", library_url.split("/").last().unwrap());
std::fs::create_dir_all("libraries").unwrap();
std::fs::write(path, bytes).unwrap();
}
// Download the natives
println!("Downloading natives");
std::fs::create_dir_all(format!("natives/{}", latest["id"].as_str().unwrap()).as_str()).unwrap();
let mut index: i32 = 0;
let native_len = native_urls.len();
for native_url in &native_urls {
println!("{}%", ((index as f32 / native_len as f32) * 100.0) as i32);
// Skip if the native already exists
index += 1;
if std::fs::metadata(format!("natives/{}/{}", latest["id"].as_str().unwrap(), native_url.split("/").last().unwrap())).is_ok() {
continue;
}
let response = ureq::get(&native_url).call();
let response = response.unwrap();
let len: usize = response.header("Content-Length")
.unwrap()
.parse().unwrap();
let mut bytes: Vec<u8> = Vec::with_capacity(len);
response.into_reader()
.read_to_end(&mut bytes).unwrap();
let path = format!("natives/{}/{}", latest["id"].as_str().unwrap(), native_url.split("/").last().unwrap());
std::fs::write(path, bytes).unwrap();
}
// Unzip the natives with unzip command
let files_in_natives = std::fs::read_dir(format!("natives/{}", latest["id"].as_str().unwrap()).as_str()).unwrap();
// Filter for .jar
for file in files_in_natives {
let file = file.unwrap();
let path = file.path();
let path = path.to_str().unwrap();
if path.ends_with(".jar") {
std::process::Command::new("unzip")
.current_dir(format!("natives/{}", latest["id"].as_str().unwrap()).as_str())
.arg("-o")
.arg(file.file_name())
.status()
.unwrap();
}
}
// Figure out Java version from MC version
let mc_version = latest["id"].as_str().unwrap();
let mc_minor = mc_version.split(".").nth(1).unwrap().parse::<i32>().unwrap();
let java_ver = match mc_minor {
..=12 => "8",
..=16 => "11",
..=19 => "17",
20.. => "21",
_ => "8"
};
// Build the launch command
let mut launch_command = String::from(format!("/usr/lib/jvm/java-{}-openjdk/bin/java -cp ", java_ver));
// Build the classpath
let mut classpath = String::new();
for library_url in &library_urls {
let path = format!("libraries/{}", library_url.split("/").last().unwrap());
classpath.push_str(&path);
classpath.push_str(":");
}
classpath.push_str(format!("versions/{}.jar", latest["id"].as_str().unwrap()).as_str());
launch_command.push_str(&classpath);
// Add the natives, absolute path
launch_command.push_str(format!(" -Djava.library.path=$(pwd)/natives/{}", latest["id"].as_str().unwrap()).as_str());
// Append the Xmx and Xms
launch_command.push_str(" -Xmx2G -Xms2G");
// Append the main class
launch_command.push_str(format!(" net.minecraft.client.main.Main --username {} --version {} --gameDir .", "Dev", latest["id"].as_str().unwrap()).as_str());
// Append the assetDir
launch_command.push_str(" --assetsDir assets");
// Append the assetIndex
launch_command.push_str(format!(" --assetIndex {}", asset_index["id"].as_str().unwrap()).as_str());
// Append the uuid
launch_command.push_str(" --uuid 8d3f4f3c-0a1c-4b1d-8f1d-2f4b3f4b3f4b");
// Append the bogus access token
launch_command.push_str(" --accessToken missingno");
// Append empty userProperties
launch_command.push_str(" --userProperties {}");
// Run the command
println!("Running command: {}", launch_command);
std::process::Command::new("sh")
.arg("-c")
.arg(launch_command)
.status()
.unwrap();
}
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