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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/net/protocol/ftp/PassiveModeDTP.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/net/protocol/ftp/PassiveModeDTP.java')
-rw-r--r-- | libjava/classpath/gnu/java/net/protocol/ftp/PassiveModeDTP.java | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/net/protocol/ftp/PassiveModeDTP.java b/libjava/classpath/gnu/java/net/protocol/ftp/PassiveModeDTP.java new file mode 100644 index 000000000..a74346c74 --- /dev/null +++ b/libjava/classpath/gnu/java/net/protocol/ftp/PassiveModeDTP.java @@ -0,0 +1,200 @@ +/* PassiveModeDTP.java -- + Copyright (C) 2003, 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.net.protocol.ftp; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.net.Socket; + +/** + * A passive mode FTP data transfer process. + * This connects to the host specified and proxies the resulting socket's + * input and output streams. + * + * @author Chris Burdess (dog@gnu.org) + */ +final class PassiveModeDTP + implements DTP +{ + + final String address; + final int port; + Socket socket; + DTPInputStream in; + DTPOutputStream out; + boolean completed; + boolean inProgress; + int transferMode; + + PassiveModeDTP(String address, int port, InetAddress localhost, + int connectionTimeout, int timeout) + throws IOException + { + this.address = address; + this.port = port; + completed = false; + inProgress = false; + socket = new Socket(); + InetSocketAddress remote = new InetSocketAddress(address, port); + InetSocketAddress local = new InetSocketAddress(localhost, port + 1); + socket.bind(local); + if (connectionTimeout > 0) + { + socket.connect(remote, connectionTimeout); + } + else + { + socket.connect(remote); + } + if (timeout > 0) + { + socket.setSoTimeout(timeout); + } + } + + /** + * Returns an input stream from which a remote file can be read. + */ + public InputStream getInputStream() + throws IOException + { + if (inProgress) + { + throw new IOException("Transfer in progress"); + } + switch (transferMode) + { + case FTPConnection.MODE_STREAM: + in = new StreamInputStream(this, socket.getInputStream()); + break; + case FTPConnection.MODE_BLOCK: + in = new BlockInputStream(this, socket.getInputStream()); + break; + case FTPConnection.MODE_COMPRESSED: + in = new CompressedInputStream(this, socket.getInputStream()); + break; + default: + throw new IllegalStateException("Invalid transfer mode"); + } + in.setTransferComplete(false); + return in; + } + + /** + * Returns an output stream to which a local file can be written for + * upload. + */ + public OutputStream getOutputStream() + throws IOException + { + if (inProgress) + { + throw new IOException("Transfer in progress"); + } + switch (transferMode) + { + case FTPConnection.MODE_STREAM: + out = new StreamOutputStream(this, socket.getOutputStream()); + break; + case FTPConnection.MODE_BLOCK: + out = new BlockOutputStream(this, socket.getOutputStream()); + break; + case FTPConnection.MODE_COMPRESSED: + out = new CompressedOutputStream(this, socket.getOutputStream()); + break; + default: + throw new IllegalStateException("Invalid transfer mode"); + } + out.setTransferComplete(false); + return out; + } + + public void setTransferMode(int mode) + { + transferMode = mode; + } + + public void complete() + { + completed = true; + if (!inProgress) + { + transferComplete(); + } + } + + public boolean abort() + { + completed = true; + transferComplete(); + return inProgress; + } + + /* + * Called by DTPInputStream or DTPOutputStream when end of + * stream is reached. + */ + public void transferComplete() + { + if (in != null) + { + in.setTransferComplete(true); + } + if (out != null) + { + out.setTransferComplete(true); + } + inProgress = false; + completed = completed ||(transferMode == FTPConnection.MODE_STREAM); + if (completed && socket != null) + { + try + { + socket.close(); + } + catch (IOException e) + { + } + } + } + +} |