Initial commit
This commit is contained in:
281
Java/WebServer/src/main/java/de/craftix/WebServer.java
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281
Java/WebServer/src/main/java/de/craftix/WebServer.java
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package de.craftix;
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import com.sun.net.httpserver.HttpExchange;
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import com.sun.net.httpserver.HttpHandler;
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import com.sun.net.httpserver.HttpServer;
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import de.craftix.api.RequestMethod;
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import de.craftix.api.Route;
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import de.craftix.api.SetMethod;
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import de.craftix.api.WebApi;
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import java.io.*;
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import java.lang.reflect.Method;
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import java.net.InetSocketAddress;
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import java.nio.file.Files;
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import java.util.HashMap;
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import java.util.Map;
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public class WebServer implements HttpHandler {
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private static WebServer instance;
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public static void start(int port, File contentRoot, boolean enableApiTester) {
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instance = new WebServer(port, contentRoot, enableApiTester);
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}
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public static void addApi(WebApi api) {
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if (!api.getClass().isAnnotationPresent(Route.class)) throw new IllegalStateException("API does not have a Route");
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String route = api.getClass().getAnnotation(Route.class).value();
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for (Method m : api.getClass().getMethods()) {
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if (m.getParameters().length == 0) continue;
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if (!m.getParameters()[0].getType().equals(HttpExchange.class)) continue;
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String r = route + (m.isAnnotationPresent(Route.class) ? m.getAnnotation(Route.class).value() : "");
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instance.apis.put(r, m);
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instance.apiObjects.put(m, api);
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}
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}
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private String contentRoot;
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private boolean enableApiTester;
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private File webRoot;
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private final Map<String, Method> apis = new HashMap<>();
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private final Map<Method, WebApi> apiObjects = new HashMap<>();
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private WebServer(int port, File contentRoot, boolean enableApiTester) {
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try {
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HttpServer server = HttpServer.create(new InetSocketAddress(port), 0);
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this.contentRoot = contentRoot.getAbsolutePath();
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this.enableApiTester = enableApiTester;
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//install typescript converter
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System.out.println("Creating enviroment...");
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this.webRoot = new File("webserver");
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webRoot.delete();
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webRoot.mkdirs();
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ProcessBuilder builder = new ProcessBuilder();
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builder.directory(webRoot);
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builder.command("cmd.exe", "/c", "npm install typescript");
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Process p = builder.start();
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monitorProcess(p);
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p.waitFor();
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server.createContext("/", this);
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server.start();
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System.out.println("HttpServer started successfully on Port: " + server.getAddress().getPort());
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}catch (Exception e) { e.printStackTrace(); }
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}
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@Override
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public void handle(HttpExchange exchange) throws IOException {
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String path = exchange.getRequestURI().getPath();
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if (enableApiTester && path.equalsIgnoreCase("/apitester")) {
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byte[] response = getApiTester();
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exchange.sendResponseHeaders(200, response.length);
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OutputStream out = exchange.getResponseBody();
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out.write(response);
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out.close();
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}
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if (apis.containsKey(path)) {
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Method api = apis.get(path);
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String method = api.isAnnotationPresent(SetMethod.class) ? api.getAnnotation(SetMethod.class).value().toString() : RequestMethod.GET.toString();
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if (!exchange.getRequestMethod().equals(method)) {
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byte[] response = enableApiTester ? getApiTester() : getFileContent("/index.html");
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exchange.sendResponseHeaders(200, response.length);
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OutputStream out = exchange.getResponseBody();
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out.write(response);
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out.close();
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return;
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}
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try {
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api.invoke(apiObjects.get(api), exchange);
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} catch (Exception e) { e.printStackTrace(); }
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} else {
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byte[] response = getFileContent(path);
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exchange.sendResponseHeaders(200, response.length);
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OutputStream out = exchange.getResponseBody();
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out.write(response);
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out.close();
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}
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}
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private byte[] getFileContent(String fileName) {
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try {
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if (fileName.endsWith("/")) return getFileContent(fileName + "index.html");
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if (fileName.endsWith(".ts")) {
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String out = webRoot.getAbsolutePath() + getFileName(fileName).replace(".ts", ".js");
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String src = contentRoot + fileName;
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ProcessBuilder builder = new ProcessBuilder();
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builder.directory(webRoot);
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builder.command("cmd.exe", "/c", "npx tsc", src, "--outFile", out);
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Process p = builder.start();
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monitorProcess(p);
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p.waitFor();
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System.out.println(out + 1);
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return readFile(out);
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}
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return readFile(fileName);
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}catch (Exception e) {
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System.err.println("Client tried to access invalid path: " + fileName);
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}
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return enableApiTester ? getApiTester() : getFileContent("/index.html");
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}
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private byte[] readFile(String fileName) {
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try {
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return Files.readAllBytes(new File(contentRoot + fileName).toPath());
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}catch (Exception e) {
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System.err.println("Client tried to access invalid path: " + fileName);
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}
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return enableApiTester ? getApiTester() : getFileContent("/index.html");
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}
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private void monitorProcess(Process p) {
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new Thread(() -> {
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try {
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BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
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String str;
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while ((str = br.readLine()) != null) {
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System.out.println(str);
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}
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}catch (Exception ignored) {}
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}).start();
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new Thread(() -> {
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try {
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BufferedReader br = new BufferedReader(new InputStreamReader(p.getErrorStream()));
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String str;
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while ((str = br.readLine()) != null) {
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System.out.println(str);
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}
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}catch (Exception ignored) {}
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}).start();
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}
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private String getFileName(String path) {
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path = path.replaceAll("//", "/");
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String[] dirs = path.split("/");
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return dirs[dirs.length - 1];
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}
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public static byte[] getBytesFromStream(InputStream in) {
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try {
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if (in == null) throw new NullPointerException("InputStream cannot be null");
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ByteArrayOutputStream buffer = new ByteArrayOutputStream();
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int nRead;
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byte[] data = new byte[16384];
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while ((nRead = in.read(data, 0, data.length)) != -1) {
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buffer.write(data, 0, nRead);
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}
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return buffer.toByteArray();
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}catch (Exception e) { e.printStackTrace(); }
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return new byte[0];
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}
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public static byte[] getApiTester() {
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return ("<!DOCTYPE html>\n" +
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"<html lang=\"en\">\n" +
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"<head>\n" +
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" <meta charset=\"UTF-8\">\n" +
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" <title>Http Request</title>\n" +
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" <link href=\"https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css\" rel=\"stylesheet\" integrity=\"sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3\" crossorigin=\"anonymous\">\n" +
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" <script src=\"https://cdn.jsdelivr.net/npm/@popperjs/core@2.10.2/dist/umd/popper.min.js\" integrity=\"sha384-7+zCNj/IqJ95wo16oMtfsKbZ9ccEh31eOz1HGyDuCQ6wgnyJNSYdrPa03rtR1zdB\" crossorigin=\"anonymous\"></script>\n" +
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" <script src=\"https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.min.js\" integrity=\"sha384-QJHtvGhmr9XOIpI6YVutG+2QOK9T+ZnN4kzFN1RtK3zEFEIsxhlmWl5/YESvpZ13\" crossorigin=\"anonymous\"></script>\n" +
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"\n" +
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" <style>\n" +
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" .hover:hover {\n" +
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" cursor: pointer;\n" +
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" }\n" +
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"\n" +
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" .unselectable {\n" +
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" -webkit-touch-callout: none;\n" +
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" -webkit-user-select: none;\n" +
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" -moz-user-select: none;\n" +
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" -ms-user-select: none;\n" +
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" user-select: none;\n" +
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" }\n" +
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"\n" +
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" #url_start {\n" +
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" border-top-right-radius: 0;\n" +
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" border-bottom-right-radius: 0;\n" +
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" }\n" +
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"\n" +
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" #url {\n" +
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" border-top-left-radius: 0;\n" +
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" border-bottom-left-radius: 0;\n" +
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" }\n" +
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" </style>\n" +
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"<body>\n" +
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"\n" +
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"<section style=\"margin-top: 20px\" id=\"options\">\n" +
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" <p class=\"text-center unselectable\" style=\"font-size: 50px\">Send Http Request</p>\n" +
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"\n" +
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" <form class=\"container\">\n" +
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" <div class=\"row\">\n" +
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" <div class=\"col\">\n" +
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" <label for=\"url\">URL</label>\n" +
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" <div class=\"input-group mb-3\">\n" +
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" <div class=\"input-group-prepend\">\n" +
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" <span class=\"input-group-text\" id=\"url_start\"></span>\n" +
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" </div>\n" +
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" <input type=\"text\" class=\"form-control\" id=\"url\" aria-describedby=\"url_start\">\n" +
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" </div>\n" +
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" </div>\n" +
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" <div class=\"dropdown col col-md-2\">\n" +
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" <label for=\"method\" class=\"unselectable\">Select Method</label>\n" +
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" <input class=\"btn btn-secondary dropdown-toggle form-control unselectable\" type=\"button\" id=\"method\" data-bs-toggle=\"dropdown\" aria-expanded=\"false\" value=\"GET\">\n" +
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" <ul class=\"dropdown-menu\" aria-labelledby=\"method\">\n" +
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" <li><a class=\"dropdown-item hover unselectable\" id=\"GET\">GET</a></li>\n" +
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" <li><a class=\"dropdown-item hover unselectable\" id=\"POST\">POST</a></li>\n" +
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" <li><a class=\"dropdown-item hover unselectable\" id=\"PUT\">PUT</a></li>\n" +
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" <li><a class=\"dropdown-item hover unselectable\" id=\"DELETE\">DELETE</a></li>\n" +
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" </ul>\n" +
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" </div>\n" +
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" </div>\n" +
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" <br>\n" +
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" <div class=\"mb-3\">\n" +
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" <label class=\"form-check-label unselectable\" for=\"body\">Body</label>\n" +
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" <textarea id=\"body\" class=\"form-control\" style=\"height: 200px\"></textarea>\n" +
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" </div>\n" +
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" <button type=\"button\" class=\"btn btn-primary unselectable\" id=\"send\">Send</button>\n" +
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" </form>\n" +
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"</section>\n" +
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"\n" +
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"<br><br>\n" +
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"\n" +
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"<section id=\"response\" class=\"container\"></section>\n" +
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"\n" +
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"<script>\n" +
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" const url = new URL(window.location.href);\n" +
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" const startUrl = url.protocol + \"//\" + url.hostname + \":\" + url.port + \"/\";\n" +
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" document.getElementById(\"url_start\").innerHTML = startUrl;\n" +
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"\n" +
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" let method = \"GET\";\n" +
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"\n" +
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" const dropdowns = document.getElementsByClassName(\"dropdown-item\");\n" +
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" for (let i = 0; i < dropdowns.length; i++) {\n" +
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" const dropdown = dropdowns[i];\n" +
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" dropdown.onclick = function () {\n" +
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" method = dropdown.id;\n" +
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" document.getElementById(\"method\").value = method;\n" +
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" }\n" +
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" }\n" +
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"\n" +
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" document.getElementById(\"send\").onclick = function () {\n" +
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" const url = startUrl + document.getElementById(\"url\").value;\n" +
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" const body = document.getElementById(\"body\").value;\n" +
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" const Http = new XMLHttpRequest();\n" +
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" Http.open(method, url, true);\n" +
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" Http.onreadystatechange = function () {\n" +
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" document.getElementById(\"response\").innerHTML = this.responseText;\n" +
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" }\n" +
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" Http.send(body);\n" +
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" }\n" +
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"</script>\n" +
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"\n" +
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"</body>\n" +
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"</html>").getBytes();
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}
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}
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20
Java/WebServer/src/main/java/de/craftix/api/HttpQuery.java
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20
Java/WebServer/src/main/java/de/craftix/api/HttpQuery.java
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@@ -0,0 +1,20 @@
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package de.craftix.api;
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import com.sun.net.httpserver.HttpExchange;
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import java.util.HashMap;
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import java.util.Map;
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public class HttpQuery {
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private final Map<String, String> variables = new HashMap<>();
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public HttpQuery(HttpExchange exchange) {
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if (!exchange.getRequestURI().toString().contains("?")) return;
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String raw = exchange.getRequestURI().getQuery();
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String[] vars = raw.split("&");
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for (String var : vars)
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variables.put(var.split("=")[0].toLowerCase(), var.split("=")[1]);
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}
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public String getVariable(String name) { return variables.get(name.toLowerCase()) != null ? variables.get(name.toLowerCase()) : ""; }
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}
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@@ -0,0 +1,17 @@
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package de.craftix.api;
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public enum RequestMethod {
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GET("GET"),
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POST("POST"),
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PUT("PUT"),
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DELETE("DELETE");
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private final String type;
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RequestMethod(String type) { this.type = type; }
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public String getType() { return type; }
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@Override
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public String toString() { return type; }
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}
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12
Java/WebServer/src/main/java/de/craftix/api/Route.java
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12
Java/WebServer/src/main/java/de/craftix/api/Route.java
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@@ -0,0 +1,12 @@
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package de.craftix.api;
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import java.lang.annotation.ElementType;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.annotation.Target;
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@Retention(RetentionPolicy.RUNTIME)
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@Target({ElementType.METHOD, ElementType.TYPE})
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public @interface Route {
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String value();
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}
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12
Java/WebServer/src/main/java/de/craftix/api/SetMethod.java
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12
Java/WebServer/src/main/java/de/craftix/api/SetMethod.java
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@@ -0,0 +1,12 @@
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package de.craftix.api;
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import java.lang.annotation.ElementType;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.annotation.Target;
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@Retention(RetentionPolicy.RUNTIME)
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@Target(ElementType.METHOD)
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public @interface SetMethod {
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RequestMethod value() default RequestMethod.GET;
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}
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32
Java/WebServer/src/main/java/de/craftix/api/WebApi.java
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32
Java/WebServer/src/main/java/de/craftix/api/WebApi.java
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@@ -0,0 +1,32 @@
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package de.craftix.api;
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import com.google.gson.Gson;
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import com.sun.net.httpserver.HttpExchange;
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import de.craftix.WebServer;
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import java.io.OutputStream;
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import java.io.Serializable;
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import java.lang.reflect.Type;
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public class WebApi {
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protected void sendDataAsJson(HttpExchange exchange, Serializable data) {
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if (data instanceof String) sendData(exchange, ((String) data).getBytes());
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else sendData(exchange, new Gson().toJson(data).getBytes());
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}
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protected void sendData(HttpExchange exchange, byte[] data) {
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try {
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exchange.sendResponseHeaders(200, data.length);
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OutputStream out = exchange.getResponseBody();
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out.write(data);
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out.close();
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}catch (Exception e) { e.printStackTrace(); }
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}
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protected <T> T getDataFromBody(HttpExchange exchange, Type type) {
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byte[] data = WebServer.getBytesFromStream(exchange.getRequestBody());
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Gson gson = new Gson();
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return gson.fromJson(new String(data), type);
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}
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}
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Block a user