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/*
*
* MariaDB Client for Java
*
* Copyright (c) 2012-2014 Monty Program Ab.
* Copyright (c) 2015-2019 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 com.github.dockerjava.httpclient5;
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;
import java.util.concurrent.atomic.AtomicBoolean;
class UnixDomainSocket extends Socket {
private static final int AF_UNIX = 1;
private static final int SOCK_STREAM = Platform.isSolaris() ? 2 : 1;
private static final int PROTOCOL = 0;
static {
if (Platform.isSolaris()) {
System.loadLibrary("nsl");
System.loadLibrary("socket");
}
if (!Platform.isWindows() && !Platform.isWindowsCE()) {
Native.register("c");
}
}
private final AtomicBoolean closeLock = new AtomicBoolean();
private final SockAddr sockaddr;
private final int fd;
private InputStream is;
private OutputStream os;
private boolean connected;
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);
closeLock.set(false);
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 read(int fd, byte[] buffer, long size)
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);
private static String formatError(LastErrorException lee) {
try {
return strerror(lee.getErrorCode());
} catch (Throwable t) {
return lee.getMessage();
}
}
@Override
public boolean isConnected() {
return connected;
}
@Override
public void close() throws IOException {
if (!closeLock.getAndSet(true)) {
try {
close(fd);
} catch (LastErrorException lee) {
throw new IOException("native close() failed : " + formatError(lee));
}
connected = false;
}
}
@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()));
}
connected = true;
} 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) {
// do nothing
}
public void setKeepAlive(boolean b) {
// do nothing
}
public void setReceiveBufferSize(int size) {
// do nothing
}
public void setSendBufferSize(int size) {
// do nothing
}
public void setSoLinger(boolean b, int i) {
// do nothing
}
public void setSoTimeout(int timeout) {
}
public void shutdownInput() {
// do nothing
}
public void shutdownOutput() {
// do nothing
}
public static class SockAddr extends Structure {
@SuppressWarnings("checkstyle:membername")
public short sun_family;
@SuppressWarnings("checkstyle:membername")
public byte[] sun_path;
/**
* Contructor.
*
* @param sunPath path
*/
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();
}
@Override
protected java.util.List getFieldOrder() {
return Arrays.asList("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 remainingLength = len;
int size;
byte[] data = new byte[(len < 10240) ? len : 10240];
do {
if (!isConnected()) {
return -1;
}
size = UnixDomainSocket.read(fd, data, (remainingLength < 10240) ? remainingLength : 10240);
if (size <= 0) {
return -1;
}
System.arraycopy(data, 0, bytesEntry, off, size);
bytes += size;
off += size;
remainingLength -= size;
} while ((remainingLength > 0) && (size > 0));
return bytes;
} else {
if (!isConnected()) {
return -1;
}
int size = UnixDomainSocket.read(fd, bytesEntry, len);
if (size <= 0) {
return -1;
}
return size;
}
} 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 {
if (!isConnected()) {
return -1;
}
return read(bytes, 0, bytes.length);
}
}
class UnixSocketOutputStream extends OutputStream {
@Override
public void write(byte[] bytesEntry, int off, int len) throws IOException {
int bytes;
try {
if (off > 0) {
int size;
int remainingLength = len;
byte[] data = new byte[(len < 10240) ? len : 10240];
do {
size = (remainingLength < 10240) ? remainingLength : 10240;
System.arraycopy(bytesEntry, off, data, 0, size);
if (!isConnected()) {
return;
}
bytes = UnixDomainSocket.send(fd, data, size, 0);
if (bytes > 0) {
off += bytes;
remainingLength -= bytes;
}
} while ((remainingLength > 0) && (bytes > 0));
} else {
if (!isConnected()) {
return;
}
bytes = UnixDomainSocket.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);
}
}
}
