# HG changeset patch # User František Kučera # Date 1319530573 -7200 # Node ID b723308e1359cb8713ada964783864d34a5b6601 # Parent dc04a3c2c557010d897355cbcfa75811af896a2f SMTP: dot escaping – imported GNU code. diff -r dc04a3c2c557 -r b723308e1359 src/org/sonews/util/io/CRLFOutputStream.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/org/sonews/util/io/CRLFOutputStream.java Tue Oct 25 10:16:13 2011 +0200 @@ -0,0 +1,155 @@ +/* CRLFOutputStream.java -- +Copyright (C) 2002, 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 org.sonews.util.io; // original package: gnu.java.net + +import java.io.FilterOutputStream; +import java.io.IOException; +import java.io.OutputStream; +import java.io.UnsupportedEncodingException; + +/** + * An output stream that filters LFs into CR/LF pairs. + * + * @author Chris Burdess (dog@gnu.org) + */ +public class CRLFOutputStream extends FilterOutputStream { + + static final String US_ASCII = "US-ASCII"; + /** + * The CR octet. + */ + public static final int CR = 13; + /** + * The LF octet. + */ + public static final int LF = 10; + /** + * The CR/LF pair. + */ + public static final byte[] CRLF = {CR, LF}; + /** + * The last byte read. + */ + protected int last; + + /** + * Constructs a CR/LF output stream connected to the specified output stream. + */ + public CRLFOutputStream(OutputStream out) { + super(out); + last = -1; + } + + /** + * Writes a character to the underlying stream. + * @exception IOException if an I/O error occurred + */ + @Override + public void write(int ch) throws IOException { + if (ch == CR) { + out.write(CRLF); + } else if (ch == LF) { + if (last != CR) { + out.write(CRLF); + } + } else { + out.write(ch); + } + last = ch; + } + + /** + * Writes a byte array to the underlying stream. + * @exception IOException if an I/O error occurred + */ + @Override + public void write(byte[] b) throws IOException { + write(b, 0, b.length); + } + + /** + * Writes a portion of a byte array to the underlying stream. + * @exception IOException if an I/O error occurred + */ + @Override + public void write(byte[] b, int off, int len) throws IOException { + int d = off; + len += off; + for (int i = off; i < len; i++) { + switch (b[i]) { + case CR: + out.write(b, d, i - d); + out.write(CRLF, 0, 2); + d = i + 1; + break; + case LF: + if (last != CR) { + out.write(b, d, i - d); + out.write(CRLF, 0, 2); + } + d = i + 1; + break; + } + last = b[i]; + } + if (len - d > 0) { + out.write(b, d, len - d); + } + } + + /** + * Writes the specified ASCII string to the underlying stream. + * @exception IOException if an I/O error occurred + */ + public void write(String text) throws IOException { + try { + byte[] bytes = text.getBytes(US_ASCII); + write(bytes, 0, bytes.length); + } catch (UnsupportedEncodingException e) { + throw new IOException("The US-ASCII encoding is not supported on this system", e); + } + } + + /** + * Writes a newline to the underlying stream. + * @exception IOException if an I/O error occurred + */ + public void writeln() throws IOException { + out.write(CRLF, 0, 2); + } +} diff -r dc04a3c2c557 -r b723308e1359 src/org/sonews/util/io/SMTPOutputStream.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/org/sonews/util/io/SMTPOutputStream.java Tue Oct 25 10:16:13 2011 +0200 @@ -0,0 +1,111 @@ +/* +GNU-Classpath Extensions: javamail +Copyright (C) 2002 Chris Burdess + +For more information on the classpathx please mail: +nferrier@tapsellferrier.co.uk + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU Lesser General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program 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 this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ +package org.sonews.util.io; // original package: gnu.mail.providers.smtp + +import java.io.FilterOutputStream; +import java.io.IOException; + +/** + * An output stream implementing the SMTP specification for dot escaping. + * Objects of this class are intended to be chained with CRLFOutputStream + * instances as all SMTP output is intended to be CRLF-escaped. + * + * @author dog@gnu.org + * @version 0.1 + */ +public class SMTPOutputStream extends FilterOutputStream { + + /** + * The LF octet. + */ + public static final int LF = 0x0a; + /** + * The dot octet. + */ + public static final int DOT = 0x2e; + /** + * The last octet read. + */ + protected int last; + + /** + * Constructs an SMTP output stream connected to the specified output stream. + * The underlying output stream should coordinate proper CRLF pairs at + * line ends. + * @param out a CRLFOutputStream + */ + public SMTPOutputStream(CRLFOutputStream out) { + super(out); + } + + /** + * Writes a character to the underlying stream. + * @exception IOException if an I/O error occurred + */ + @Override + public void write(int ch) throws IOException { + if (ch == DOT) { + if (last == LF) { + out.write(DOT); + } + } + out.write(ch); + last = ch; + } + + /** + * Writes a byte array to the underlying stream. + * @exception IOException if an I/O error occurred + */ + @Override + public void write(byte b[]) throws IOException { + write(b, 0, b.length); + } + + /** + * Writes a portion of a byte array to the underlying stream. + * @exception IOException if an I/O error occurred + */ + @Override + public void write(byte b[], int off, int len) throws IOException { + int d = off; + len += off; + for (int i = off; i < len; i++) { + switch (b[i]) { + case DOT: + int l = (i - d); + if (l > 0) { + out.write(b, d, l); + } + d = i; + if (last == LF) { + out.write(DOT); + } + break; + } + last = b[i]; + } + if (len - d > 0) { + out.write(b, d, len - d); + } + } +}