The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.net; |
| 18 | |
| 19 | import java.io.IOException; |
| 20 | import java.io.OutputStream; |
| 21 | import java.io.InputStream; |
| 22 | import java.io.FileDescriptor; |
| 23 | import java.net.SocketOptions; |
| 24 | |
Elliott Hughes | 34385d3 | 2014-04-28 11:11:32 -0700 | [diff] [blame] | 25 | import android.system.ErrnoException; |
| 26 | import android.system.Os; |
| 27 | import android.system.OsConstants; |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 28 | import android.system.StructLinger; |
| 29 | import android.system.StructTimeval; |
Neil Fuller | d2df87e | 2015-07-03 15:06:23 +0100 | [diff] [blame] | 30 | import android.util.MutableInt; |
Mike Lockwood | e7d309a | 2013-07-16 11:36:22 -0700 | [diff] [blame] | 31 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 32 | /** |
| 33 | * Socket implementation used for android.net.LocalSocket and |
| 34 | * android.net.LocalServerSocket. Supports only AF_LOCAL sockets. |
| 35 | */ |
| 36 | class LocalSocketImpl |
| 37 | { |
| 38 | private SocketInputStream fis; |
| 39 | private SocketOutputStream fos; |
| 40 | private Object readMonitor = new Object(); |
| 41 | private Object writeMonitor = new Object(); |
| 42 | |
| 43 | /** null if closed or not yet created */ |
| 44 | private FileDescriptor fd; |
Zhihai Xu | 118c851 | 2013-07-25 13:44:50 -0700 | [diff] [blame] | 45 | /** whether fd is created internally */ |
| 46 | private boolean mFdCreatedInternally; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 47 | |
| 48 | // These fields are accessed by native code; |
| 49 | /** file descriptor array received during a previous read */ |
| 50 | FileDescriptor[] inboundFileDescriptors; |
| 51 | /** file descriptor array that should be written during next write */ |
| 52 | FileDescriptor[] outboundFileDescriptors; |
| 53 | |
| 54 | /** |
| 55 | * An input stream for local sockets. Needed because we may |
| 56 | * need to read ancillary data. |
| 57 | */ |
| 58 | class SocketInputStream extends InputStream { |
| 59 | /** {@inheritDoc} */ |
| 60 | @Override |
| 61 | public int available() throws IOException { |
Ian McKellar | 54d5008 | 2014-04-11 15:41:00 -0700 | [diff] [blame] | 62 | FileDescriptor myFd = fd; |
| 63 | if (myFd == null) throw new IOException("socket closed"); |
| 64 | |
Neil Fuller | d2df87e | 2015-07-03 15:06:23 +0100 | [diff] [blame] | 65 | MutableInt avail = new MutableInt(0); |
| 66 | try { |
| 67 | Os.ioctlInt(myFd, OsConstants.FIONREAD, avail); |
| 68 | } catch (ErrnoException e) { |
| 69 | throw e.rethrowAsIOException(); |
| 70 | } |
| 71 | return avail.value; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | /** {@inheritDoc} */ |
| 75 | @Override |
| 76 | public void close() throws IOException { |
| 77 | LocalSocketImpl.this.close(); |
| 78 | } |
| 79 | |
| 80 | /** {@inheritDoc} */ |
| 81 | @Override |
| 82 | public int read() throws IOException { |
| 83 | int ret; |
| 84 | synchronized (readMonitor) { |
| 85 | FileDescriptor myFd = fd; |
| 86 | if (myFd == null) throw new IOException("socket closed"); |
| 87 | |
| 88 | ret = read_native(myFd); |
| 89 | return ret; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | /** {@inheritDoc} */ |
| 94 | @Override |
| 95 | public int read(byte[] b) throws IOException { |
| 96 | return read(b, 0, b.length); |
| 97 | } |
| 98 | |
| 99 | /** {@inheritDoc} */ |
| 100 | @Override |
| 101 | public int read(byte[] b, int off, int len) throws IOException { |
| 102 | synchronized (readMonitor) { |
| 103 | FileDescriptor myFd = fd; |
| 104 | if (myFd == null) throw new IOException("socket closed"); |
| 105 | |
| 106 | if (off < 0 || len < 0 || (off + len) > b.length ) { |
| 107 | throw new ArrayIndexOutOfBoundsException(); |
| 108 | } |
| 109 | |
| 110 | int ret = readba_native(b, off, len, myFd); |
| 111 | |
| 112 | return ret; |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * An output stream for local sockets. Needed because we may |
| 119 | * need to read ancillary data. |
| 120 | */ |
| 121 | class SocketOutputStream extends OutputStream { |
| 122 | /** {@inheritDoc} */ |
| 123 | @Override |
| 124 | public void close() throws IOException { |
| 125 | LocalSocketImpl.this.close(); |
| 126 | } |
| 127 | |
| 128 | /** {@inheritDoc} */ |
| 129 | @Override |
| 130 | public void write (byte[] b) throws IOException { |
| 131 | write(b, 0, b.length); |
| 132 | } |
| 133 | |
| 134 | /** {@inheritDoc} */ |
| 135 | @Override |
| 136 | public void write (byte[] b, int off, int len) throws IOException { |
| 137 | synchronized (writeMonitor) { |
| 138 | FileDescriptor myFd = fd; |
| 139 | if (myFd == null) throw new IOException("socket closed"); |
| 140 | |
| 141 | if (off < 0 || len < 0 || (off + len) > b.length ) { |
| 142 | throw new ArrayIndexOutOfBoundsException(); |
| 143 | } |
| 144 | writeba_native(b, off, len, myFd); |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | /** {@inheritDoc} */ |
| 149 | @Override |
| 150 | public void write (int b) throws IOException { |
| 151 | synchronized (writeMonitor) { |
| 152 | FileDescriptor myFd = fd; |
| 153 | if (myFd == null) throw new IOException("socket closed"); |
| 154 | write_native(b, myFd); |
| 155 | } |
| 156 | } |
zzy | 71bfafc | 2013-04-16 17:17:37 -0700 | [diff] [blame] | 157 | |
| 158 | /** |
| 159 | * Wait until the data in sending queue is emptied. A polling version |
| 160 | * for flush implementation. |
| 161 | * @throws IOException |
| 162 | * if an i/o error occurs. |
| 163 | */ |
| 164 | @Override |
| 165 | public void flush() throws IOException { |
| 166 | FileDescriptor myFd = fd; |
| 167 | if (myFd == null) throw new IOException("socket closed"); |
Neil Fuller | d2df87e | 2015-07-03 15:06:23 +0100 | [diff] [blame] | 168 | |
| 169 | // Loop until the output buffer is empty. |
| 170 | MutableInt pending = new MutableInt(0); |
| 171 | while (true) { |
| 172 | try { |
| 173 | // See linux/net/unix/af_unix.c |
| 174 | Os.ioctlInt(myFd, OsConstants.TIOCOUTQ, pending); |
| 175 | } catch (ErrnoException e) { |
| 176 | throw e.rethrowAsIOException(); |
| 177 | } |
| 178 | |
| 179 | if (pending.value <= 0) { |
| 180 | // The output buffer is empty. |
| 181 | break; |
| 182 | } |
| 183 | |
zzy | 71bfafc | 2013-04-16 17:17:37 -0700 | [diff] [blame] | 184 | try { |
| 185 | Thread.sleep(10); |
| 186 | } catch (InterruptedException ie) { |
Neil Fuller | d2df87e | 2015-07-03 15:06:23 +0100 | [diff] [blame] | 187 | break; |
zzy | 71bfafc | 2013-04-16 17:17:37 -0700 | [diff] [blame] | 188 | } |
| 189 | } |
| 190 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 191 | } |
| 192 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 193 | private native int read_native(FileDescriptor fd) throws IOException; |
| 194 | private native int readba_native(byte[] b, int off, int len, |
| 195 | FileDescriptor fd) throws IOException; |
| 196 | private native void writeba_native(byte[] b, int off, int len, |
| 197 | FileDescriptor fd) throws IOException; |
| 198 | private native void write_native(int b, FileDescriptor fd) |
| 199 | throws IOException; |
| 200 | private native void connectLocal(FileDescriptor fd, String name, |
| 201 | int namespace) throws IOException; |
| 202 | private native void bindLocal(FileDescriptor fd, String name, int namespace) |
| 203 | throws IOException; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 204 | private native Credentials getPeerCredentials_native( |
| 205 | FileDescriptor fd) throws IOException; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 206 | |
| 207 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 208 | * Create a new instance. |
| 209 | */ |
| 210 | /*package*/ LocalSocketImpl() |
| 211 | { |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * Create a new instance from a file descriptor representing |
| 216 | * a bound socket. The state of the file descriptor is not checked here |
| 217 | * but the caller can verify socket state by calling listen(). |
| 218 | * |
| 219 | * @param fd non-null; bound file descriptor |
| 220 | */ |
Neil Fuller | 7fd7246 | 2017-01-06 11:29:15 +0000 | [diff] [blame] | 221 | /*package*/ LocalSocketImpl(FileDescriptor fd) |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 222 | { |
| 223 | this.fd = fd; |
| 224 | } |
| 225 | |
| 226 | public String toString() { |
| 227 | return super.toString() + " fd:" + fd; |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * Creates a socket in the underlying OS. |
| 232 | * |
Mike Lockwood | e7d309a | 2013-07-16 11:36:22 -0700 | [diff] [blame] | 233 | * @param sockType either {@link LocalSocket#SOCKET_DGRAM}, {@link LocalSocket#SOCKET_STREAM} |
| 234 | * or {@link LocalSocket#SOCKET_SEQPACKET} |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 235 | * @throws IOException |
| 236 | */ |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 237 | public void create(int sockType) throws IOException { |
Neil Fuller | b08c7bc | 2017-01-04 10:07:25 +0000 | [diff] [blame] | 238 | if (fd != null) { |
| 239 | throw new IOException("LocalSocketImpl already has an fd"); |
| 240 | } |
| 241 | |
| 242 | int osType; |
| 243 | switch (sockType) { |
| 244 | case LocalSocket.SOCKET_DGRAM: |
| 245 | osType = OsConstants.SOCK_DGRAM; |
| 246 | break; |
| 247 | case LocalSocket.SOCKET_STREAM: |
| 248 | osType = OsConstants.SOCK_STREAM; |
| 249 | break; |
| 250 | case LocalSocket.SOCKET_SEQPACKET: |
| 251 | osType = OsConstants.SOCK_SEQPACKET; |
| 252 | break; |
| 253 | default: |
| 254 | throw new IllegalStateException("unknown sockType"); |
| 255 | } |
| 256 | try { |
| 257 | fd = Os.socket(OsConstants.AF_UNIX, osType, 0); |
| 258 | mFdCreatedInternally = true; |
| 259 | } catch (ErrnoException e) { |
| 260 | e.rethrowAsIOException(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 261 | } |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * Closes the socket. |
| 266 | * |
| 267 | * @throws IOException |
| 268 | */ |
| 269 | public void close() throws IOException { |
| 270 | synchronized (LocalSocketImpl.this) { |
Zhihai Xu | 118c851 | 2013-07-25 13:44:50 -0700 | [diff] [blame] | 271 | if ((fd == null) || (mFdCreatedInternally == false)) { |
| 272 | fd = null; |
| 273 | return; |
| 274 | } |
Mike Lockwood | e7d309a | 2013-07-16 11:36:22 -0700 | [diff] [blame] | 275 | try { |
Elliott Hughes | 34385d3 | 2014-04-28 11:11:32 -0700 | [diff] [blame] | 276 | Os.close(fd); |
Mike Lockwood | e7d309a | 2013-07-16 11:36:22 -0700 | [diff] [blame] | 277 | } catch (ErrnoException e) { |
| 278 | e.rethrowAsIOException(); |
| 279 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 280 | fd = null; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | /** note timeout presently ignored */ |
| 285 | protected void connect(LocalSocketAddress address, int timeout) |
| 286 | throws IOException |
| 287 | { |
| 288 | if (fd == null) { |
| 289 | throw new IOException("socket not created"); |
| 290 | } |
| 291 | |
| 292 | connectLocal(fd, address.getName(), address.getNamespace().getId()); |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * Binds this socket to an endpoint name. May only be called on an instance |
| 297 | * that has not yet been bound. |
| 298 | * |
| 299 | * @param endpoint endpoint address |
| 300 | * @throws IOException |
| 301 | */ |
| 302 | public void bind(LocalSocketAddress endpoint) throws IOException |
| 303 | { |
| 304 | if (fd == null) { |
| 305 | throw new IOException("socket not created"); |
| 306 | } |
| 307 | |
| 308 | bindLocal(fd, endpoint.getName(), endpoint.getNamespace().getId()); |
| 309 | } |
| 310 | |
| 311 | protected void listen(int backlog) throws IOException |
| 312 | { |
| 313 | if (fd == null) { |
| 314 | throw new IOException("socket not created"); |
| 315 | } |
Neil Fuller | 4fa438e | 2015-07-03 17:58:00 +0100 | [diff] [blame] | 316 | try { |
| 317 | Os.listen(fd, backlog); |
| 318 | } catch (ErrnoException e) { |
| 319 | throw e.rethrowAsIOException(); |
| 320 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | /** |
| 324 | * Accepts a new connection to the socket. Blocks until a new |
| 325 | * connection arrives. |
| 326 | * |
| 327 | * @param s a socket that will be used to represent the new connection. |
| 328 | * @throws IOException |
| 329 | */ |
Neil Fuller | c1eaeb9 | 2015-07-08 11:33:54 +0100 | [diff] [blame] | 330 | protected void accept(LocalSocketImpl s) throws IOException { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 331 | if (fd == null) { |
| 332 | throw new IOException("socket not created"); |
| 333 | } |
| 334 | |
Neil Fuller | c1eaeb9 | 2015-07-08 11:33:54 +0100 | [diff] [blame] | 335 | try { |
| 336 | s.fd = Os.accept(fd, null /* address */); |
| 337 | s.mFdCreatedInternally = true; |
| 338 | } catch (ErrnoException e) { |
| 339 | throw e.rethrowAsIOException(); |
| 340 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | /** |
| 344 | * Retrieves the input stream for this instance. |
| 345 | * |
| 346 | * @return input stream |
| 347 | * @throws IOException if socket has been closed or cannot be created. |
| 348 | */ |
| 349 | protected InputStream getInputStream() throws IOException |
| 350 | { |
| 351 | if (fd == null) { |
| 352 | throw new IOException("socket not created"); |
| 353 | } |
| 354 | |
| 355 | synchronized (this) { |
| 356 | if (fis == null) { |
| 357 | fis = new SocketInputStream(); |
| 358 | } |
| 359 | |
| 360 | return fis; |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Retrieves the output stream for this instance. |
| 366 | * |
| 367 | * @return output stream |
| 368 | * @throws IOException if socket has been closed or cannot be created. |
| 369 | */ |
| 370 | protected OutputStream getOutputStream() throws IOException |
| 371 | { |
| 372 | if (fd == null) { |
| 373 | throw new IOException("socket not created"); |
| 374 | } |
| 375 | |
| 376 | synchronized (this) { |
| 377 | if (fos == null) { |
| 378 | fos = new SocketOutputStream(); |
| 379 | } |
| 380 | |
| 381 | return fos; |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | /** |
| 386 | * Returns the number of bytes available for reading without blocking. |
| 387 | * |
| 388 | * @return >= 0 count bytes available |
| 389 | * @throws IOException |
| 390 | */ |
| 391 | protected int available() throws IOException |
| 392 | { |
| 393 | return getInputStream().available(); |
| 394 | } |
| 395 | |
| 396 | /** |
| 397 | * Shuts down the input side of the socket. |
| 398 | * |
| 399 | * @throws IOException |
| 400 | */ |
| 401 | protected void shutdownInput() throws IOException |
| 402 | { |
| 403 | if (fd == null) { |
| 404 | throw new IOException("socket not created"); |
| 405 | } |
| 406 | |
Neil Fuller | a7f7c24 | 2015-07-08 12:57:15 +0100 | [diff] [blame] | 407 | try { |
| 408 | Os.shutdown(fd, OsConstants.SHUT_RD); |
| 409 | } catch (ErrnoException e) { |
| 410 | throw e.rethrowAsIOException(); |
| 411 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | /** |
| 415 | * Shuts down the output side of the socket. |
| 416 | * |
| 417 | * @throws IOException |
| 418 | */ |
| 419 | protected void shutdownOutput() throws IOException |
| 420 | { |
| 421 | if (fd == null) { |
| 422 | throw new IOException("socket not created"); |
| 423 | } |
| 424 | |
Neil Fuller | a7f7c24 | 2015-07-08 12:57:15 +0100 | [diff] [blame] | 425 | try { |
| 426 | Os.shutdown(fd, OsConstants.SHUT_WR); |
| 427 | } catch (ErrnoException e) { |
| 428 | throw e.rethrowAsIOException(); |
| 429 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 430 | } |
| 431 | |
| 432 | protected FileDescriptor getFileDescriptor() |
| 433 | { |
| 434 | return fd; |
| 435 | } |
| 436 | |
| 437 | protected boolean supportsUrgentData() |
| 438 | { |
| 439 | return false; |
| 440 | } |
| 441 | |
| 442 | protected void sendUrgentData(int data) throws IOException |
| 443 | { |
| 444 | throw new RuntimeException ("not impled"); |
| 445 | } |
| 446 | |
| 447 | public Object getOption(int optID) throws IOException |
| 448 | { |
| 449 | if (fd == null) { |
| 450 | throw new IOException("socket not created"); |
| 451 | } |
| 452 | |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 453 | try { |
| 454 | Object toReturn; |
| 455 | switch (optID) { |
| 456 | case SocketOptions.SO_TIMEOUT: |
| 457 | StructTimeval timeval = Os.getsockoptTimeval(fd, OsConstants.SOL_SOCKET, |
| 458 | OsConstants.SO_SNDTIMEO); |
| 459 | toReturn = (int) timeval.toMillis(); |
| 460 | break; |
| 461 | case SocketOptions.SO_RCVBUF: |
| 462 | case SocketOptions.SO_SNDBUF: |
| 463 | case SocketOptions.SO_REUSEADDR: |
| 464 | int osOpt = javaSoToOsOpt(optID); |
| 465 | toReturn = Os.getsockoptInt(fd, OsConstants.SOL_SOCKET, osOpt); |
| 466 | break; |
| 467 | case SocketOptions.SO_LINGER: |
| 468 | StructLinger linger= |
| 469 | Os.getsockoptLinger(fd, OsConstants.SOL_SOCKET, OsConstants.SO_LINGER); |
| 470 | if (!linger.isOn()) { |
| 471 | toReturn = -1; |
| 472 | } else { |
| 473 | toReturn = linger.l_linger; |
| 474 | } |
| 475 | break; |
| 476 | case SocketOptions.TCP_NODELAY: |
| 477 | toReturn = Os.getsockoptInt(fd, OsConstants.IPPROTO_TCP, |
| 478 | OsConstants.TCP_NODELAY); |
| 479 | break; |
| 480 | default: |
| 481 | throw new IOException("Unknown option: " + optID); |
| 482 | } |
| 483 | return toReturn; |
| 484 | } catch (ErrnoException e) { |
| 485 | throw e.rethrowAsIOException(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 486 | } |
| 487 | } |
| 488 | |
| 489 | public void setOption(int optID, Object value) |
| 490 | throws IOException { |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 491 | |
| 492 | if (fd == null) { |
| 493 | throw new IOException("socket not created"); |
| 494 | } |
| 495 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 496 | /* |
| 497 | * Boolean.FALSE is used to disable some options, so it |
| 498 | * is important to distinguish between FALSE and unset. |
| 499 | * We define it here that -1 is unset, 0 is FALSE, and 1 |
| 500 | * is TRUE. |
| 501 | */ |
| 502 | int boolValue = -1; |
| 503 | int intValue = 0; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 504 | if (value instanceof Integer) { |
| 505 | intValue = (Integer)value; |
| 506 | } else if (value instanceof Boolean) { |
| 507 | boolValue = ((Boolean) value)? 1 : 0; |
| 508 | } else { |
| 509 | throw new IOException("bad value: " + value); |
| 510 | } |
| 511 | |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 512 | try { |
| 513 | switch (optID) { |
| 514 | case SocketOptions.SO_LINGER: |
| 515 | StructLinger linger = new StructLinger(boolValue, intValue); |
| 516 | Os.setsockoptLinger(fd, OsConstants.SOL_SOCKET, OsConstants.SO_LINGER, linger); |
| 517 | break; |
| 518 | case SocketOptions.SO_TIMEOUT: |
Neil Fuller | a8280a5 | 2016-08-31 11:32:17 +0100 | [diff] [blame] | 519 | // The option must set both send and receive timeouts. |
| 520 | // Note: The incoming timeout value is in milliseconds. |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 521 | StructTimeval timeval = StructTimeval.fromMillis(intValue); |
Neil Fuller | a8280a5 | 2016-08-31 11:32:17 +0100 | [diff] [blame] | 522 | Os.setsockoptTimeval(fd, OsConstants.SOL_SOCKET, OsConstants.SO_RCVTIMEO, |
| 523 | timeval); |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 524 | Os.setsockoptTimeval(fd, OsConstants.SOL_SOCKET, OsConstants.SO_SNDTIMEO, |
| 525 | timeval); |
| 526 | break; |
| 527 | case SocketOptions.SO_RCVBUF: |
| 528 | case SocketOptions.SO_SNDBUF: |
| 529 | case SocketOptions.SO_REUSEADDR: |
| 530 | int osOpt = javaSoToOsOpt(optID); |
| 531 | Os.setsockoptInt(fd, OsConstants.SOL_SOCKET, osOpt, intValue); |
| 532 | break; |
| 533 | case SocketOptions.TCP_NODELAY: |
| 534 | Os.setsockoptInt(fd, OsConstants.IPPROTO_TCP, OsConstants.TCP_NODELAY, |
| 535 | intValue); |
| 536 | break; |
| 537 | default: |
| 538 | throw new IOException("Unknown option: " + optID); |
| 539 | } |
| 540 | } catch (ErrnoException e) { |
| 541 | throw e.rethrowAsIOException(); |
| 542 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 543 | } |
| 544 | |
| 545 | /** |
| 546 | * Enqueues a set of file descriptors to send to the peer. The queue |
| 547 | * is one deep. The file descriptors will be sent with the next write |
| 548 | * of normal data, and will be delivered in a single ancillary message. |
| 549 | * See "man 7 unix" SCM_RIGHTS on a desktop Linux machine. |
| 550 | * |
| 551 | * @param fds non-null; file descriptors to send. |
| 552 | * @throws IOException |
| 553 | */ |
| 554 | public void setFileDescriptorsForSend(FileDescriptor[] fds) { |
| 555 | synchronized(writeMonitor) { |
| 556 | outboundFileDescriptors = fds; |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | /** |
| 561 | * Retrieves a set of file descriptors that a peer has sent through |
| 562 | * an ancillary message. This method retrieves the most recent set sent, |
| 563 | * and then returns null until a new set arrives. |
| 564 | * File descriptors may only be passed along with regular data, so this |
| 565 | * method can only return a non-null after a read operation. |
| 566 | * |
| 567 | * @return null or file descriptor array |
| 568 | * @throws IOException |
| 569 | */ |
| 570 | public FileDescriptor[] getAncillaryFileDescriptors() throws IOException { |
| 571 | synchronized(readMonitor) { |
| 572 | FileDescriptor[] result = inboundFileDescriptors; |
| 573 | |
| 574 | inboundFileDescriptors = null; |
| 575 | return result; |
| 576 | } |
| 577 | } |
| 578 | |
| 579 | /** |
| 580 | * Retrieves the credentials of this socket's peer. Only valid on |
| 581 | * connected sockets. |
| 582 | * |
| 583 | * @return non-null; peer credentials |
| 584 | * @throws IOException |
| 585 | */ |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 586 | public Credentials getPeerCredentials() throws IOException { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 587 | return getPeerCredentials_native(fd); |
| 588 | } |
| 589 | |
| 590 | /** |
| 591 | * Retrieves the socket name from the OS. |
| 592 | * |
| 593 | * @return non-null; socket name |
| 594 | * @throws IOException on failure |
| 595 | */ |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 596 | public LocalSocketAddress getSockAddress() throws IOException { |
| 597 | // This method has never been implemented. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 598 | return null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 599 | } |
| 600 | |
| 601 | @Override |
| 602 | protected void finalize() throws IOException { |
| 603 | close(); |
| 604 | } |
Neil Fuller | c80af6d | 2015-07-03 10:59:17 +0100 | [diff] [blame] | 605 | |
| 606 | private static int javaSoToOsOpt(int optID) { |
| 607 | switch (optID) { |
| 608 | case SocketOptions.SO_SNDBUF: |
| 609 | return OsConstants.SO_SNDBUF; |
| 610 | case SocketOptions.SO_RCVBUF: |
| 611 | return OsConstants.SO_RCVBUF; |
| 612 | case SocketOptions.SO_REUSEADDR: |
| 613 | return OsConstants.SO_REUSEADDR; |
| 614 | default: |
| 615 | throw new UnsupportedOperationException("Unknown option: " + optID); |
| 616 | } |
| 617 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 618 | } |