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/*
* This file is part of OneConfig.
* OneConfig - Next Generation Config Library for Minecraft: Java Edition
* Copyright (C) 2021, 2022 Polyfrost.
* <https://polyfrost.cc> <https://github.com/Polyfrost/>
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* OneConfig is licensed under the terms of version 3 of the GNU Lesser
* General Public License as published by the Free Software Foundation, AND
* under the Additional Terms Applicable to OneConfig, as published by Polyfrost,
* either version 1.0 of the Additional Terms, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License. If not, see <https://www.gnu.org/licenses/>. You should
* have also received a copy of the Additional Terms Applicable
* to OneConfig, as published by Polyfrost. If not, see
* <https://polyfrost.cc/legal/oneconfig/additional-terms>
*/
package cc.polyfrost.oneconfig.utils;
import com.google.gson.JsonElement;
import cc.polyfrost.oneconfig.libs.universal.UDesktop;
import org.apache.commons.io.IOUtils;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
/**
* Utility class for accessing the internet.
*/
public final class NetworkUtils {
/**
* Gets the contents of a URL as a String.
*
* @param url The URL to read.
* @param userAgent The user agent to use.
* @param timeout The timeout in milliseconds.
* @param useCaches Whether to use caches.
* @return The contents of the URL.
*/
public static String getString(String url, String userAgent, int timeout, boolean useCaches) {
try (InputStreamReader input = new InputStreamReader(setupConnection(url, userAgent, timeout, useCaches), StandardCharsets.UTF_8)) {
return IOUtils.toString(input);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Gets the contents of a URL as a String.
*
* @param url The URL to read.
* @return The contents of the URL.
* @see NetworkUtils#getString(String, String, int, boolean)
*/
public static String getString(String url) {
return getString(url, "OneConfig/1.0.0", 5000, false);
}
/**
* Gets the contents of a URL as a JsonElement.
*
* @param url The URL to read.
* @param userAgent The user agent to use.
* @param timeout The timeout in milliseconds.
* @param useCaches Whether to use caches.
* @return The contents of the URL.
* @see NetworkUtils#getString(String, String, int, boolean)
* @see JsonUtils#parseString(String)
*/
public static JsonElement getJsonElement(String url, String userAgent, int timeout, boolean useCaches) {
return JsonUtils.parseString(getString(url, userAgent, timeout, useCaches));
}
/**
* Gets the contents of a URL as a JsonElement.
*
* @param url The URL to read.
* @return The contents of the URL.
* @see NetworkUtils#getJsonElement(String, String, int, boolean)
*/
public static JsonElement getJsonElement(String url) {
return getJsonElement(url, "OneConfig/1.0.0", 5000, false);
}
/**
* Downloads a file from a URL.
*
* @param url The URL to download from.
* @param file The file to download to.
* @param userAgent The user agent to use.
* @param timeout The timeout in milliseconds.
* @param useCaches Whether to use caches.
* @return Whether the download was successful.
*/
public static boolean downloadFile(String url, File file, String userAgent, int timeout, boolean useCaches) {
url = url.replace(" ", "%20");
try (FileOutputStream fileOut = new FileOutputStream(file); BufferedInputStream in = new BufferedInputStream(setupConnection(url, userAgent, timeout, useCaches))) {
IOUtils.copy(in, fileOut);
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
/**
* Downloads a file from a URL.
*
* @param url The URL to download from.
* @param file The file to download to.
* @return Whether the download was successful.
* @see NetworkUtils#downloadFile(String, File, String, int, boolean)
*/
public static boolean downloadFile(String url, File file) {
return downloadFile(url, file, "OneConfig/1.0.0", 5000, false);
}
/**
* Gets the SHA-256 hash of a file.
*
* @param file The file to hash.
* @return The SHA-256 hash of the file.
*/
public static String getFileChecksum(File file) {
try (FileInputStream inputStream = new FileInputStream(file)) {
MessageDigest digest = MessageDigest.getInstance("SHA-256");
byte[] bytesBuffer = new byte[1024];
int bytesRead;
while ((bytesRead = inputStream.read(bytesBuffer)) != -1) {
digest.update(bytesBuffer, 0, bytesRead);
}
return convertByteArrayToHexString(digest.digest());
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
/**
* Launches a URL in the default browser.
*
* @param uri The URI to launch.
* @see UDesktop#browse(URI)
* @see java.awt.Desktop#browse(URI)
*/
public static void browseLink(String uri) {
UDesktop.browse(URI.create(uri));
}
private static InputStream setupConnection(String url, String userAgent, int timeout, boolean useCaches) throws IOException {
HttpURLConnection connection = ((HttpURLConnection) new URL(url).openConnection());
connection.setRequestMethod("GET");
connection.setUseCaches(useCaches);
connection.addRequestProperty("User-Agent", userAgent);
connection.setReadTimeout(timeout);
connection.setConnectTimeout(timeout);
connection.setDoOutput(true);
return connection.getInputStream();
}
private static String convertByteArrayToHexString(byte[] arrayBytes) {
StringBuilder stringBuffer = new StringBuilder();
for (byte arrayByte : arrayBytes) {
stringBuffer.append(Integer.toString((arrayByte & 0xff) + 0x100, 16)
.substring(1));
}
return stringBuffer.toString();
}
}
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