processing/app/src/processing/app/WebServer.java at master · botbit/processing · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

package processing.app;

import java.io.*;

import java.net.*;

import java.util.*;

import java.util.zip.*;

//import javax.swing.SwingUtilities;

/**

* This code is placed here in anticipation of running the reference from an

* internal web server that reads the docs from a zip file, instead of using

* thousands of .html files on the disk, which is really inefficient.

* <p/>

* This is a very simple, multi-threaded HTTP server, originally based on

* <a href="http://j.mp/6BQwpI">this</a> article on java.sun.com.

public class WebServer implements HttpConstants {

/* Where worker threads stand idle */

static Vector threads = new Vector();

/* the web server's virtual root */

//static File root;

/* timeout on client connections */

static int timeout = 10000;

/* max # worker threads */

static int workers = 5;

// static PrintStream log = System.out;

static void loadProps() throws IOException {

File f = new File

(System.getProperty("java.home")+File.separator+

"lib"+File.separator+"www-server.properties");

if (f.exists()) {

InputStream is =new BufferedInputStream(new

FileInputStream(f));

props.load(is);

is.close();

String r = props.getProperty("root");

if (r != null) {

root = new File(r);

if (!root.exists()) {

throw new Error(root + " doesn't exist as server root");

}

r = props.getProperty("timeout");

if (r != null) {

timeout = Integer.parseInt(r);

}

r = props.getProperty("workers");

if (r != null) {

workers = Integer.parseInt(r);

}

r = props.getProperty("log");

if (r != null) {

p("opening log file: " + r);

log = new PrintStream(new BufferedOutputStream(

new FileOutputStream(r)));

}

// if no properties were specified, choose defaults

if (root == null) {

root = new File(System.getProperty("user.dir"));

}

if (timeout <= 1000) {

timeout = 5000;

}

if (workers < 25) {

workers = 5;

}

if (log == null) {

p("logging to stdout");

log = System.out;

}

static void printProps() {

p("root="+root);

p("timeout="+timeout);

p("workers="+workers);

}

/* print to stdout */

// protected static void p(String s) {

// System.out.println(s);

// }

/* print to the log file */

protected static void log(String s) {

if (false) {

System.out.println(s);

}

// synchronized (log) {

// log.println(s);

// log.flush();

// }

}

//public static void main(String[] a) throws Exception {

static public int launch(String zipPath) throws IOException {

final ZipFile zip = new ZipFile(zipPath);

final Map<String, ZipEntry> entries = new HashMap<String, ZipEntry>();

Enumeration en = zip.entries();

while (en.hasMoreElements()) {

ZipEntry entry = (ZipEntry) en.nextElement();

entries.put(entry.getName(), entry);

}

// if (a.length > 0) {

// port = Integer.parseInt(a[0]);

// }

// loadProps();

// printProps();

// start worker threads

for (int i = 0; i < workers; ++i) {

WebServerWorker w = new WebServerWorker(zip, entries);

Thread t = new Thread(w, "Web Server Worker #" + i);

t.start();

threads.addElement(w);

}

final int port = 8080;

//SwingUtilities.invokeLater(new Runnable() {

Runnable r = new Runnable() {

public void run() {

try {

ServerSocket ss = new ServerSocket(port);

while (true) {

Socket s = ss.accept();

WebServerWorker w = null;

synchronized (threads) {

if (threads.isEmpty()) {

WebServerWorker ws = new WebServerWorker(zip, entries);

ws.setSocket(s);

(new Thread(ws, "additional worker")).start();

} else {

w = (WebServerWorker) threads.elementAt(0);

threads.removeElementAt(0);

w.setSocket(s);

}

} catch (IOException e) {

e.printStackTrace();

}

};

new Thread(r).start();

// });

return port;

}

class WebServerWorker /*extends WebServer*/ implements HttpConstants, Runnable {

private final ZipFile zip;

private final Map<String, ZipEntry> entries;

final static int BUF_SIZE = 2048;

static final byte[] EOL = { (byte)'\r', (byte)'\n' };

/* buffer to use for requests */

byte[] buf;

/* Socket to client we're handling */

private Socket s;

WebServerWorker(ZipFile zip, Map<String, ZipEntry> entries) {

this.entries = entries;

this.zip = zip;

buf = new byte[BUF_SIZE];

s = null;

}

// Worker() {

// buf = new byte[BUF_SIZE];

// s = null;

// }

synchronized void setSocket(Socket s) {

this.s = s;

notify();

}

public synchronized void run() {

while(true) {

if (s == null) {

/* nothing to do */

try {

wait();

} catch (InterruptedException e) {

/* should not happen */

continue;

}

try {

handleClient();

} catch (Exception e) {

e.printStackTrace();

}

/* go back in wait queue if there's fewer

* than numHandler connections.

s = null;

Vector pool = WebServer.threads;

synchronized (pool) {

if (pool.size() >= WebServer.workers) {

/* too many threads, exit this one */

return;

} else {

pool.addElement(this);

}

void handleClient() throws IOException {

InputStream is = new BufferedInputStream(s.getInputStream());

PrintStream ps = new PrintStream(s.getOutputStream());

// we will only block in read for this many milliseconds

// before we fail with java.io.InterruptedIOException,

// at which point we will abandon the connection.

s.setSoTimeout(WebServer.timeout);

s.setTcpNoDelay(true);

// zero out the buffer from last time

for (int i = 0; i < BUF_SIZE; i++) {

buf[i] = 0;

}

try {

// We only support HTTP GET/HEAD, and don't support any fancy HTTP

// options, so we're only interested really in the first line.

int nread = 0, r = 0;

outerloop:

while (nread < BUF_SIZE) {

r = is.read(buf, nread, BUF_SIZE - nread);

if (r == -1) {

return; // EOF

}

int i = nread;

nread += r;

for (; i < nread; i++) {

if (buf[i] == (byte)'\n' || buf[i] == (byte)'\r') {

break outerloop; // read one line

}

/* are we doing a GET or just a HEAD */

boolean doingGet;

/* beginning of file name */

int index;

if (buf[0] == (byte)'G' &&

buf[1] == (byte)'E' &&

buf[2] == (byte)'T' &&

buf[3] == (byte)' ') {

doingGet = true;

index = 4;

} else if (buf[0] == (byte)'H' &&

buf[1] == (byte)'E' &&

buf[2] == (byte)'A' &&

buf[3] == (byte)'D' &&

buf[4] == (byte)' ') {

doingGet = false;

index = 5;

} else {

/* we don't support this method */

ps.print("HTTP/1.0 " + HTTP_BAD_METHOD +

" unsupported method type: ");

ps.write(buf, 0, 5);

ps.write(EOL);

ps.flush();

s.close();

return;

}

int i = 0;

/* find the file name, from:

* GET /foo/bar.html HTTP/1.0

* extract "/foo/bar.html"

for (i = index; i < nread; i++) {

if (buf[i] == (byte)' ') {

break;

}

String fname = new String(buf, index, i-index);

// get the zip entry, remove the front slash

ZipEntry entry = entries.get(fname.substring(1));

//System.out.println(fname + " " + entry);

boolean ok = printHeaders(entry, ps);

if (entry != null) {

InputStream stream = zip.getInputStream(entry);

if (doingGet && ok) {

sendFile(stream, ps);

}

} else {

send404(ps);

}

String fname =

(new String(buf, 0, index, i-index)).replace('/', File.separatorChar);

if (fname.startsWith(File.separator)) {

fname = fname.substring(1);

}

File targ = new File(WebServer.root, fname);

if (targ.isDirectory()) {

File ind = new File(targ, "index.html");

if (ind.exists()) {

targ = ind;

}

boolean OK = printHeaders(targ, ps);

if (doingGet) {

if (OK) {

sendFile(targ, ps);

} else {

send404(targ, ps);

}

} finally {

s.close();

}

boolean printHeaders(ZipEntry targ, PrintStream ps) throws IOException {

boolean ret = false;

int rCode = 0;

if (targ == null) {

rCode = HTTP_NOT_FOUND;

ps.print("HTTP/1.0 " + HTTP_NOT_FOUND + " Not Found");

ps.write(EOL);

ret = false;

} else {

rCode = HTTP_OK;

ps.print("HTTP/1.0 " + HTTP_OK + " OK");

ps.write(EOL);

ret = true;

}

if (targ != null) {

WebServer.log("From " +s.getInetAddress().getHostAddress()+": GET " + targ.getName()+" --> "+rCode);

}

ps.print("Server: Processing Documentation Server");

ps.write(EOL);

ps.print("Date: " + (new Date()));

ps.write(EOL);

if (ret) {

if (!targ.isDirectory()) {

ps.print("Content-length: " + targ.getSize());

ps.write(EOL);

ps.print("Last Modified: " + new Date(targ.getTime()));

ps.write(EOL);

String name = targ.getName();

int ind = name.lastIndexOf('.');

String ct = null;

if (ind > 0) {

ct = map.get(name.substring(ind));

}

if (ct == null) {

//System.err.println("unknown content type " + name.substring(ind));

ct = "application/x-unknown-content-type";

}

ps.print("Content-type: " + ct);

ps.write(EOL);

} else {

ps.print("Content-type: text/html");

ps.write(EOL);

}

ps.write(EOL); // adding another newline here [fry]

return ret;

}

boolean printHeaders(File targ, PrintStream ps) throws IOException {

boolean ret = false;

int rCode = 0;

if (!targ.exists()) {

rCode = HTTP_NOT_FOUND;

ps.print("HTTP/1.0 " + HTTP_NOT_FOUND + " Not Found");

ps.write(EOL);

ret = false;

} else {

rCode = HTTP_OK;

ps.print("HTTP/1.0 " + HTTP_OK+" OK");

ps.write(EOL);

ret = true;

}

WebServer.log("From " +s.getInetAddress().getHostAddress()+": GET " + targ.getAbsolutePath()+"-->"+rCode);

ps.print("Server: Simple java");

ps.write(EOL);

ps.print("Date: " + (new Date()));

ps.write(EOL);

if (ret) {

if (!targ.isDirectory()) {

ps.print("Content-length: " + targ.length());

ps.write(EOL);

ps.print("Last Modified: " + new Date(targ.lastModified()));

ps.write(EOL);

String name = targ.getName();

int ind = name.lastIndexOf('.');

String ct = null;

if (ind > 0) {

ct = map.get(name.substring(ind));

}

if (ct == null) {

ct = "unknown/unknown";

}

ps.print("Content-type: " + ct);

ps.write(EOL);

} else {

ps.print("Content-type: text/html");

ps.write(EOL);

}

return ret;

}

void send404(PrintStream ps) throws IOException {

ps.write(EOL);

ps.print("<html><body><h1>404 Not Found</h1>"+

"The requested resource was not found.</body></html>");

ps.write(EOL);

}

void sendFile(File targ, PrintStream ps) throws IOException {

InputStream is = null;

ps.write(EOL);

if (targ.isDirectory()) {

listDirectory(targ, ps);

return;

} else {

is = new FileInputStream(targ.getAbsolutePath());

}

sendFile(is, ps);

}

void sendFile(InputStream is, PrintStream ps) throws IOException {

try {

int n;

while ((n = is.read(buf)) > 0) {

ps.write(buf, 0, n);

}

} finally {

is.close();

}

/* mapping of file extensions to content-types */

static Map<String, String> map = new HashMap<String, String>();

static {

fillMap();

}

static void setSuffix(String k, String v) {

map.put(k, v);

}

static void fillMap() {

setSuffix("", "content/unknown");

setSuffix(".uu", "application/octet-stream");

setSuffix(".exe", "application/octet-stream");

setSuffix(".ps", "application/postscript");

setSuffix(".zip", "application/zip");

setSuffix(".sh", "application/x-shar");

setSuffix(".tar", "application/x-tar");

setSuffix(".snd", "audio/basic");

setSuffix(".au", "audio/basic");

setSuffix(".wav", "audio/x-wav");

setSuffix(".gif", "image/gif");

setSuffix(".jpg", "image/jpeg");

setSuffix(".jpeg", "image/jpeg");

setSuffix(".htm", "text/html");

setSuffix(".html", "text/html");

setSuffix(".css", "text/css");

setSuffix(".java", "text/javascript");

setSuffix(".txt", "text/plain");

setSuffix(".java", "text/plain");

setSuffix(".c", "text/plain");

setSuffix(".cc", "text/plain");

setSuffix(".c++", "text/plain");

setSuffix(".h", "text/plain");

setSuffix(".pl", "text/plain");

}

void listDirectory(File dir, PrintStream ps) throws IOException {

ps.println("<TITLE>Directory listing</TITLE><P>\n");

ps.println("<A HREF=\"..\">Parent Directory</A><BR>\n");

String[] list = dir.list();

for (int i = 0; list != null && i < list.length; i++) {

File f = new File(dir, list[i]);

if (f.isDirectory()) {

ps.println("<A HREF=\""+list[i]+"/\">"+list[i]+"/</A><BR>");

} else {

ps.println("<A HREF=\""+list[i]+"\">"+list[i]+"</A><BR");

}

ps.println("<P><HR><BR><I>" + (new Date()) + "</I>");

}

interface HttpConstants {

/** 2XX: generally "OK" */

public static final int HTTP_OK = 200;

public static final int HTTP_CREATED = 201;

public static final int HTTP_ACCEPTED = 202;

public static final int HTTP_NOT_AUTHORITATIVE = 203;

public static final int HTTP_NO_CONTENT = 204;

public static final int HTTP_RESET = 205;

public static final int HTTP_PARTIAL = 206;

/** 3XX: relocation/redirect */

public static final int HTTP_MULT_CHOICE = 300;

public static final int HTTP_MOVED_PERM = 301;

public static final int HTTP_MOVED_TEMP = 302;

public static final int HTTP_SEE_OTHER = 303;

public static final int HTTP_NOT_MODIFIED = 304;

public static final int HTTP_USE_PROXY = 305;

/** 4XX: client error */

public static final int HTTP_BAD_REQUEST = 400;

public static final int HTTP_UNAUTHORIZED = 401;

public static final int HTTP_PAYMENT_REQUIRED = 402;

public static final int HTTP_FORBIDDEN = 403;

public static final int HTTP_NOT_FOUND = 404;

public static final int HTTP_BAD_METHOD = 405;

public static final int HTTP_NOT_ACCEPTABLE = 406;

public static final int HTTP_PROXY_AUTH = 407;

public static final int HTTP_CLIENT_TIMEOUT = 408;

public static final int HTTP_CONFLICT = 409;

public static final int HTTP_GONE = 410;

public static final int HTTP_LENGTH_REQUIRED = 411;

public static final int HTTP_PRECON_FAILED = 412;

public static final int HTTP_ENTITY_TOO_LARGE = 413;

public static final int HTTP_REQ_TOO_LONG = 414;

public static final int HTTP_UNSUPPORTED_TYPE = 415;

/** 5XX: server error */

public static final int HTTP_SERVER_ERROR = 500;

public static final int HTTP_INTERNAL_ERROR = 501;

public static final int HTTP_BAD_GATEWAY = 502;

public static final int HTTP_UNAVAILABLE = 503;

public static final int HTTP_GATEWAY_TIMEOUT = 504;

public static final int HTTP_VERSION = 505;

}

processing/app/src/processing/app/WebServer.java at master · botbit/processing · GitHub

Repository navigation

Expand file tree

Breadcrumbs

WebServer.java

Latest commit

History

Breadcrumbs

WebServer.java

File metadata and controls