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| 1 | +/* | |
| 2 | + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.net.httpserver; | |
| 27 | + | |
| 28 | +import java.io.*; | |
| 29 | +import java.net.*; | |
| 30 | +import javax.net.ssl.*; | |
| 31 | +import java.util.*; | |
| 32 | +import java.util.logging.Logger; | |
| 33 | +import java.text.*; | |
| 34 | +import com.sun.net.httpserver.*; | |
| 35 | + | |
| 36 | +class ExchangeImpl { | |
| 37 | + | |
| 38 | + Headers reqHdrs, rspHdrs; | |
| 39 | + Request req; | |
| 40 | + String method; | |
| 41 | + boolean writefinished; | |
| 42 | + URI uri; | |
| 43 | + HttpConnection connection; | |
| 44 | + long reqContentLen; | |
| 45 | + long rspContentLen; | |
| 46 | + /* raw streams which access the socket directly */ | |
| 47 | + InputStream ris; | |
| 48 | + OutputStream ros; | |
| 49 | + Thread thread; | |
| 50 | + /* close the underlying connection when this exchange finished */ | |
| 51 | + boolean close; | |
| 52 | + boolean closed; | |
| 53 | + boolean http10 = false; | |
| 54 | + | |
| 55 | + /* for formatting the Date: header */ | |
| 56 | + private static final String pattern = "EEE, dd MMM yyyy HH:mm:ss zzz"; | |
| 57 | + private static final TimeZone gmtTZ = TimeZone.getTimeZone("GMT"); | |
| 58 | + private static final ThreadLocal<DateFormat> dateFormat = | |
| 59 | + new ThreadLocal<DateFormat>() { | |
| 60 | + @Override protected DateFormat initialValue() { | |
| 61 | + DateFormat df = new SimpleDateFormat(pattern, Locale.US); | |
| 62 | + df.setTimeZone(gmtTZ); | |
| 63 | + return df; | |
| 64 | + } | |
| 65 | + }; | |
| 66 | + | |
| 67 | + private static final String HEAD = "HEAD"; | |
| 68 | + | |
| 69 | + /* streams which take care of the HTTP protocol framing | |
| 70 | + * and are passed up to higher layers | |
| 71 | + */ | |
| 72 | + InputStream uis; | |
| 73 | + OutputStream uos; | |
| 74 | + LeftOverInputStream uis_orig; // uis may have be a user supplied wrapper | |
| 75 | + PlaceholderOutputStream uos_orig; | |
| 76 | + | |
| 77 | + boolean sentHeaders; /* true after response headers sent */ | |
| 78 | + Map<String,Object> attributes; | |
| 79 | + int rcode = -1; | |
| 80 | + HttpPrincipal principal; | |
| 81 | + ServerImpl server; | |
| 82 | + | |
| 83 | + ExchangeImpl ( | |
| 84 | + String m, URI u, Request req, long len, HttpConnection connection | |
| 85 | + ) throws IOException { | |
| 86 | + this.req = req; | |
| 87 | + this.reqHdrs = req.headers(); | |
| 88 | + this.rspHdrs = new Headers(); | |
| 89 | + this.method = m; | |
| 90 | + this.uri = u; | |
| 91 | + this.connection = connection; | |
| 92 | + this.reqContentLen = len; | |
| 93 | + /* ros only used for headers, body written directly to stream */ | |
| 94 | + this.ros = req.outputStream(); | |
| 95 | + this.ris = req.inputStream(); | |
| 96 | + server = getServerImpl(); | |
| 97 | + server.startExchange(); | |
| 98 | + } | |
| 99 | + | |
| 100 | + public Headers getRequestHeaders () { | |
| 101 | + return new UnmodifiableHeaders (reqHdrs); | |
| 102 | + } | |
| 103 | + | |
| 104 | + public Headers getResponseHeaders () { | |
| 105 | + return rspHdrs; | |
| 106 | + } | |
| 107 | + | |
| 108 | + public URI getRequestURI () { | |
| 109 | + return uri; | |
| 110 | + } | |
| 111 | + | |
| 112 | + public String getRequestMethod (){ | |
| 113 | + return method; | |
| 114 | + } | |
| 115 | + | |
| 116 | + public HttpContextImpl getHttpContext (){ | |
| 117 | + return connection.getHttpContext(); | |
| 118 | + } | |
| 119 | + | |
| 120 | + private boolean isHeadRequest() { | |
| 121 | + return HEAD.equals(getRequestMethod()); | |
| 122 | + } | |
| 123 | + | |
| 124 | + public void close () { | |
| 125 | + if (closed) { | |
| 126 | + return; | |
| 127 | + } | |
| 128 | + closed = true; | |
| 129 | + | |
| 130 | + /* close the underlying connection if, | |
| 131 | + * a) the streams not set up yet, no response can be sent, or | |
| 132 | + * b) if the wrapper output stream is not set up, or | |
| 133 | + * c) if the close of the input/outpu stream fails | |
| 134 | + */ | |
| 135 | + try { | |
| 136 | + if (uis_orig == null || uos == null) { | |
| 137 | + connection.close(); | |
| 138 | + return; | |
| 139 | + } | |
| 140 | + if (!uos_orig.isWrapped()) { | |
| 141 | + connection.close(); | |
| 142 | + return; | |
| 143 | + } | |
| 144 | + if (!uis_orig.isClosed()) { | |
| 145 | + uis_orig.close(); | |
| 146 | + } | |
| 147 | + uos.close(); | |
| 148 | + } catch (IOException e) { | |
| 149 | + connection.close(); | |
| 150 | + } | |
| 151 | + } | |
| 152 | + | |
| 153 | + public InputStream getRequestBody () { | |
| 154 | + if (uis != null) { | |
| 155 | + return uis; | |
| 156 | + } | |
| 157 | + if (reqContentLen == -1L) { | |
| 158 | + uis_orig = new ChunkedInputStream (this, ris); | |
| 159 | + uis = uis_orig; | |
| 160 | + } else { | |
| 161 | + uis_orig = new FixedLengthInputStream (this, ris, reqContentLen); | |
| 162 | + uis = uis_orig; | |
| 163 | + } | |
| 164 | + return uis; | |
| 165 | + } | |
| 166 | + | |
| 167 | + LeftOverInputStream getOriginalInputStream () { | |
| 168 | + return uis_orig; | |
| 169 | + } | |
| 170 | + | |
| 171 | + public int getResponseCode () { | |
| 172 | + return rcode; | |
| 173 | + } | |
| 174 | + | |
| 175 | + public OutputStream getResponseBody () { | |
| 176 | + /* TODO. Change spec to remove restriction below. Filters | |
| 177 | + * cannot work with this restriction | |
| 178 | + * | |
| 179 | + * if (!sentHeaders) { | |
| 180 | + * throw new IllegalStateException ("headers not sent"); | |
| 181 | + * } | |
| 182 | + */ | |
| 183 | + if (uos == null) { | |
| 184 | + uos_orig = new PlaceholderOutputStream (null); | |
| 185 | + uos = uos_orig; | |
| 186 | + } | |
| 187 | + return uos; | |
| 188 | + } | |
| 189 | + | |
| 190 | + | |
| 191 | + /* returns the place holder stream, which is the stream | |
| 192 | + * returned from the 1st call to getResponseBody() | |
| 193 | + * The "real" ouputstream is then placed inside this | |
| 194 | + */ | |
| 195 | + PlaceholderOutputStream getPlaceholderResponseBody () { | |
| 196 | + getResponseBody(); | |
| 197 | + return uos_orig; | |
| 198 | + } | |
| 199 | + | |
| 200 | + public void sendResponseHeaders (int rCode, long contentLen) | |
| 201 | + throws IOException | |
| 202 | + { | |
| 203 | + if (sentHeaders) { | |
| 204 | + throw new IOException ("headers already sent"); | |
| 205 | + } | |
| 206 | + this.rcode = rCode; | |
| 207 | + String statusLine = "HTTP/1.1 "+rCode+Code.msg(rCode)+"\r\n"; | |
| 208 | + OutputStream tmpout = new BufferedOutputStream (ros); | |
| 209 | + PlaceholderOutputStream o = getPlaceholderResponseBody(); | |
| 210 | + tmpout.write (bytes(statusLine, 0), 0, statusLine.length()); | |
| 211 | + boolean noContentToSend = false; // assume there is content | |
| 212 | + rspHdrs.set ("Date", dateFormat.get().format (new Date())); | |
| 213 | + | |
| 214 | + /* check for response type that is not allowed to send a body */ | |
| 215 | + | |
| 216 | + if ((rCode>=100 && rCode <200) /* informational */ | |
| 217 | + ||(rCode == 204) /* no content */ | |
| 218 | + ||(rCode == 304)) /* not modified */ | |
| 219 | + { | |
| 220 | + if (contentLen != -1) { | |
| 221 | + Logger logger = server.getLogger(); | |
| 222 | + String msg = "sendResponseHeaders: rCode = "+ rCode | |
| 223 | + + ": forcing contentLen = -1"; | |
| 224 | + logger.warning (msg); | |
| 225 | + } | |
| 226 | + contentLen = -1; | |
| 227 | + } | |
| 228 | + | |
| 229 | + if (isHeadRequest()) { | |
| 230 | + /* HEAD requests should not set a content length by passing it | |
| 231 | + * through this API, but should instead manually set the required | |
| 232 | + * headers.*/ | |
| 233 | + if (contentLen >= 0) { | |
| 234 | + final Logger logger = server.getLogger(); | |
| 235 | + String msg = | |
| 236 | + "sendResponseHeaders: being invoked with a content length for a HEAD request"; | |
| 237 | + logger.warning (msg); | |
| 238 | + } | |
| 239 | + noContentToSend = true; | |
| 240 | + contentLen = 0; | |
| 241 | + } else { /* not a HEAD request */ | |
| 242 | + if (contentLen == 0) { | |
| 243 | + if (http10) { | |
| 244 | + o.setWrappedStream (new UndefLengthOutputStream (this, ros)); | |
| 245 | + close = true; | |
| 246 | + } else { | |
| 247 | + rspHdrs.set ("Transfer-encoding", "chunked"); | |
| 248 | + o.setWrappedStream (new ChunkedOutputStream (this, ros)); | |
| 249 | + } | |
| 250 | + } else { | |
| 251 | + if (contentLen == -1) { | |
| 252 | + noContentToSend = true; | |
| 253 | + contentLen = 0; | |
| 254 | + } | |
| 255 | + rspHdrs.set("Content-length", Long.toString(contentLen)); | |
| 256 | + o.setWrappedStream (new FixedLengthOutputStream (this, ros, contentLen)); | |
| 257 | + } | |
| 258 | + } | |
| 259 | + write (rspHdrs, tmpout); | |
| 260 | + this.rspContentLen = contentLen; | |
| 261 | + tmpout.flush() ; | |
| 262 | + tmpout = null; | |
| 263 | + sentHeaders = true; | |
| 264 | + if (noContentToSend) { | |
| 265 | + WriteFinishedEvent e = new WriteFinishedEvent (this); | |
| 266 | + server.addEvent (e); | |
| 267 | + closed = true; | |
| 268 | + } | |
| 269 | + server.logReply (rCode, req.requestLine(), null); | |
| 270 | + } | |
| 271 | + | |
| 272 | + void write (Headers map, OutputStream os) throws IOException { | |
| 273 | + Set<Map.Entry<String,List<String>>> entries = map.entrySet(); | |
| 274 | + for (Map.Entry<String,List<String>> entry : entries) { | |
| 275 | + String key = entry.getKey(); | |
| 276 | + byte[] buf; | |
| 277 | + List<String> values = entry.getValue(); | |
| 278 | + for (String val : values) { | |
| 279 | + int i = key.length(); | |
| 280 | + buf = bytes (key, 2); | |
| 281 | + buf[i++] = ':'; | |
| 282 | + buf[i++] = ' '; | |
| 283 | + os.write (buf, 0, i); | |
| 284 | + buf = bytes (val, 2); | |
| 285 | + i = val.length(); | |
| 286 | + buf[i++] = '\r'; | |
| 287 | + buf[i++] = '\n'; | |
| 288 | + os.write (buf, 0, i); | |
| 289 | + } | |
| 290 | + } | |
| 291 | + os.write ('\r'); | |
| 292 | + os.write ('\n'); | |
| 293 | + } | |
| 294 | + | |
| 295 | + private byte[] rspbuf = new byte [128]; // used by bytes() | |
| 296 | + | |
| 297 | + /** | |
| 298 | + * convert string to byte[], using rspbuf | |
| 299 | + * Make sure that at least "extra" bytes are free at end | |
| 300 | + * of rspbuf. Reallocate rspbuf if not big enough. | |
| 301 | + * caller must check return value to see if rspbuf moved | |
| 302 | + */ | |
| 303 | + private byte[] bytes (String s, int extra) { | |
| 304 | + int slen = s.length(); | |
| 305 | + if (slen+extra > rspbuf.length) { | |
| 306 | + int diff = slen + extra - rspbuf.length; | |
| 307 | + rspbuf = new byte [2* (rspbuf.length + diff)]; | |
| 308 | + } | |
| 309 | + char c[] = s.toCharArray(); | |
| 310 | + for (int i=0; i<c.length; i++) { | |
| 311 | + rspbuf[i] = (byte)c[i]; | |
| 312 | + } | |
| 313 | + return rspbuf; | |
| 314 | + } | |
| 315 | + | |
| 316 | + public InetSocketAddress getRemoteAddress (){ | |
| 317 | + Socket s = connection.getChannel().socket(); | |
| 318 | + InetAddress ia = s.getInetAddress(); | |
| 319 | + int port = s.getPort(); | |
| 320 | + return new InetSocketAddress (ia, port); | |
| 321 | + } | |
| 322 | + | |
| 323 | + public InetSocketAddress getLocalAddress (){ | |
| 324 | + Socket s = connection.getChannel().socket(); | |
| 325 | + InetAddress ia = s.getLocalAddress(); | |
| 326 | + int port = s.getLocalPort(); | |
| 327 | + return new InetSocketAddress (ia, port); | |
| 328 | + } | |
| 329 | + | |
| 330 | + public String getProtocol (){ | |
| 331 | + String reqline = req.requestLine(); | |
| 332 | + int index = reqline.lastIndexOf (' '); | |
| 333 | + return reqline.substring (index+1); | |
| 334 | + } | |
| 335 | + | |
| 336 | + public SSLSession getSSLSession () { | |
| 337 | + SSLEngine e = connection.getSSLEngine(); | |
| 338 | + if (e == null) { | |
| 339 | + return null; | |
| 340 | + } | |
| 341 | + return e.getSession(); | |
| 342 | + } | |
| 343 | + | |
| 344 | + public Object getAttribute (String name) { | |
| 345 | + if (name == null) { | |
| 346 | + throw new NullPointerException ("null name parameter"); | |
| 347 | + } | |
| 348 | + if (attributes == null) { | |
| 349 | + attributes = getHttpContext().getAttributes(); | |
| 350 | + } | |
| 351 | + return attributes.get (name); | |
| 352 | + } | |
| 353 | + | |
| 354 | + public void setAttribute (String name, Object value) { | |
| 355 | + if (name == null) { | |
| 356 | + throw new NullPointerException ("null name parameter"); | |
| 357 | + } | |
| 358 | + if (attributes == null) { | |
| 359 | + attributes = getHttpContext().getAttributes(); | |
| 360 | + } | |
| 361 | + attributes.put (name, value); | |
| 362 | + } | |
| 363 | + | |
| 364 | + public void setStreams (InputStream i, OutputStream o) { | |
| 365 | + assert uis != null; | |
| 366 | + if (i != null) { | |
| 367 | + uis = i; | |
| 368 | + } | |
| 369 | + if (o != null) { | |
| 370 | + uos = o; | |
| 371 | + } | |
| 372 | + } | |
| 373 | + | |
| 374 | + /** | |
| 375 | + * PP | |
| 376 | + */ | |
| 377 | + HttpConnection getConnection () { | |
| 378 | + return connection; | |
| 379 | + } | |
| 380 | + | |
| 381 | + ServerImpl getServerImpl () { | |
| 382 | + return getHttpContext().getServerImpl(); | |
| 383 | + } | |
| 384 | + | |
| 385 | + public HttpPrincipal getPrincipal () { | |
| 386 | + return principal; | |
| 387 | + } | |
| 388 | + | |
| 389 | + void setPrincipal (HttpPrincipal principal) { | |
| 390 | + this.principal = principal; | |
| 391 | + } | |
| 392 | + | |
| 393 | + static ExchangeImpl get (HttpExchange t) { | |
| 394 | + if (t instanceof HttpExchangeImpl) { | |
| 395 | + return ((HttpExchangeImpl)t).getExchangeImpl(); | |
| 396 | + } else { | |
| 397 | + assert t instanceof HttpsExchangeImpl; | |
| 398 | + return ((HttpsExchangeImpl)t).getExchangeImpl(); | |
| 399 | + } | |
| 400 | + } | |
| 401 | +} | |
| 402 | + | |
| 403 | +/** | |
| 404 | + * An OutputStream which wraps another stream | |
| 405 | + * which is supplied either at creation time, or sometime later. | |
| 406 | + * If a caller/user tries to write to this stream before | |
| 407 | + * the wrapped stream has been provided, then an IOException will | |
| 408 | + * be thrown. | |
| 409 | + */ | |
| 410 | +class PlaceholderOutputStream extends java.io.OutputStream { | |
| 411 | + | |
| 412 | + OutputStream wrapped; | |
| 413 | + | |
| 414 | + PlaceholderOutputStream (OutputStream os) { | |
| 415 | + wrapped = os; | |
| 416 | + } | |
| 417 | + | |
| 418 | + void setWrappedStream (OutputStream os) { | |
| 419 | + wrapped = os; | |
| 420 | + } | |
| 421 | + | |
| 422 | + boolean isWrapped () { | |
| 423 | + return wrapped != null; | |
| 424 | + } | |
| 425 | + | |
| 426 | + private void checkWrap () throws IOException { | |
| 427 | + if (wrapped == null) { | |
| 428 | + throw new IOException ("response headers not sent yet"); | |
| 429 | + } | |
| 430 | + } | |
| 431 | + | |
| 432 | + public void write(int b) throws IOException { | |
| 433 | + checkWrap(); | |
| 434 | + wrapped.write (b); | |
| 435 | + } | |
| 436 | + | |
| 437 | + public void write(byte b[]) throws IOException { | |
| 438 | + checkWrap(); | |
| 439 | + wrapped.write (b); | |
| 440 | + } | |
| 441 | + | |
| 442 | + public void write(byte b[], int off, int len) throws IOException { | |
| 443 | + checkWrap(); | |
| 444 | + wrapped.write (b, off, len); | |
| 445 | + } | |
| 446 | + | |
| 447 | + public void flush() throws IOException { | |
| 448 | + checkWrap(); | |
| 449 | + wrapped.flush(); | |
| 450 | + } | |
| 451 | + | |
| 452 | + public void close() throws IOException { | |
| 453 | + checkWrap(); | |
| 454 | + wrapped.close(); | |
| 455 | + } | |
| 456 | +} | |