org.mariadb.jdbc.internal.socket.UnixDomainSocket Maven / Gradle / Ivy
/*
MariaDB Client for Java
Copyright (c) 2012-2014 Monty Program Ab.
Copyright (c) 2015-2016 MariaDB Ab.
This library 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 2.1 of the License, or (at your option)
any later version.
This library 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 Lesser General Public License
for more details.
You should have received a copy of the GNU Lesser General Public License along
with this library; if not, write to Monty Program Ab [email protected].
This particular MariaDB Client for Java file is work
derived from a Drizzle-JDBC. Drizzle-JDBC file which is covered by subject to
the following copyright and notice provisions:
Copyright (c) 2009-2011, Marcus Eriksson
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list
of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
Neither the name of the driver nor the names of its contributors may not be
used to endorse or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
package org.mariadb.jdbc.internal.socket;
import com.sun.jna.LastErrorException;
import com.sun.jna.Native;
import com.sun.jna.Platform;
import com.sun.jna.Structure;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.net.SocketAddress;
import java.util.Arrays;
public class UnixDomainSocket extends Socket {
public static final int AF_UNIX = 1;
public static final int SOCK_STREAM = Platform.isSolaris() ? 2 : 1;
public static final int PROTOCOL = 0;
static {
if (Platform.isSolaris()) {
System.loadLibrary("nsl");
System.loadLibrary("socket");
}
if (!Platform.isWindows() && !Platform.isWindowsCE()) {
Native.register("c");
}
}
private InputStream is;
private OutputStream os;
private SockAddr sockaddr;
private int fd;
public UnixDomainSocket(String path) throws IOException {
if (Platform.isWindows() || Platform.isWindowsCE()) {
throw new IOException("Unix domain sockets are not supported on Windows");
}
sockaddr = new SockAddr(path);
try {
fd = socket(AF_UNIX, SOCK_STREAM, PROTOCOL);
} catch (LastErrorException lee) {
throw new IOException("native socket() failed : " + formatError(lee));
}
}
public static native int socket(int domain, int type, int protocol) throws LastErrorException;
public static native int connect(int sockfd, SockAddr sockaddr, int addrlen) throws LastErrorException;
public static native int recv(int fd, byte[] buffer, int count, int flags) throws LastErrorException;
public static native int send(int fd, byte[] buffer, int count, int flags) throws LastErrorException;
public static native int close(int fd) throws LastErrorException;
public static native String strerror(int errno);
static String formatError(LastErrorException lee) {
try {
return strerror(lee.getErrorCode());
} catch (Throwable t) {
return lee.getMessage();
}
}
@Override
public void close() throws IOException {
try {
close(fd);
fd = -1;
} catch (LastErrorException lee) {
throw new IOException("native close() failed : " + formatError(lee));
}
}
@Override
public void connect(SocketAddress endpoint) throws IOException {
connect(endpoint, 0);
}
public void connect(SocketAddress endpoint, int timeout) throws IOException {
try {
int ret = connect(fd, sockaddr, sockaddr.size());
if (ret != 0) {
throw new IOException(strerror(Native.getLastError()));
}
} catch (LastErrorException lee) {
throw new IOException("native connect() failed : " + formatError(lee));
}
is = new UnixSocketInputStream();
os = new UnixSocketOutputStream();
}
public InputStream getInputStream() {
return is;
}
public OutputStream getOutputStream() {
return os;
}
public void setTcpNoDelay(boolean b) {
}
public void setKeepAlive(boolean b) {
}
public void setReceiveBufferSize(int size) {
}
public void setSendBufferSize(int size) {
}
public void setSoLinger(boolean b, int i) {
}
public void setSoTimeout(int timeout) {
}
public void shutdownInput() {
}
public void shutdownOutput() {
}
public static class SockAddr extends Structure {
public short sun_family;
public byte[] sun_path;
/**
* Contructor.
* @param sunPath path
*/
public SockAddr(String sunPath) {
sun_family = AF_UNIX;
byte[] arr = sunPath.getBytes();
sun_path = new byte[arr.length + 1];
System.arraycopy(arr, 0, sun_path, 0, Math.min(sun_path.length - 1, arr.length));
allocateMemory();
}
protected java.util.List getFieldOrder() {
return Arrays.asList(new String[]{"sun_family", "sun_path"});
}
}
class UnixSocketInputStream extends InputStream {
@Override
public int read(byte[] bytesEntry, int off, int len) throws IOException {
try {
if (off > 0) {
int bytes = 0;
int size = (len < 10240) ? len : 10240;
byte[] data = new byte[size];
do {
size = (len < 10240) ? len : 10240;
size = recv(fd, data, size, 0);
if (size > 0) {
System.arraycopy(data, 0, bytesEntry, off, size);
bytes += size;
off += size;
len -= size;
}
} while ((len > 0) && (size > 0));
return bytes;
} else {
return recv(fd, bytesEntry, len, 0);
}
} catch (LastErrorException lee) {
throw new IOException("native read() failed : " + formatError(lee));
}
}
@Override
public int read() throws IOException {
byte[] bytes = new byte[1];
int bytesRead = read(bytes);
if (bytesRead == 0) {
return -1;
}
return bytes[0] & 0xff;
}
@Override
public int read(byte[] bytes) throws IOException {
return read(bytes, 0, bytes.length);
}
}
class UnixSocketOutputStream extends OutputStream {
@Override
public void write(byte[] bytesEntry, int off, int len) throws IOException {
int bytes = 0;
try {
if (off > 0) {
int size = (len < 10240) ? len : 10240;
byte[] data = new byte[size];
do {
size = (len < 10240) ? len : 10240;
System.arraycopy(bytesEntry, off, data, 0, size);
bytes = send(fd, data, size, 0);
if (bytes > 0) {
off += bytes;
len -= bytes;
}
} while ((len > 0) && (bytes > 0));
} else {
bytes = send(fd, bytesEntry, len, 0);
}
if (bytes != len) {
throw new IOException("can't write " + len + "bytes");
}
} catch (LastErrorException lee) {
throw new IOException("native write() failed : " + formatError(lee));
}
}
@Override
public void write(int value) throws IOException {
write(new byte[]{(byte) value});
}
@Override
public void write(byte[] bytes) throws IOException {
write(bytes, 0, bytes.length);
}
}
}
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