├── README.md
├── .gitignore
├── portforward
├── nosuppression.xml
├── src
│ └── main
│ │ └── java
│ │ └── com
│ │ └── sharneng
│ │ ├── io
│ │ ├── package-info.java
│ │ └── IOUtils.java
│ │ ├── util
│ │ ├── package-info.java
│ │ └── NonnullByDefault.java
│ │ └── net
│ │ ├── package-info.java
│ │ ├── portforward
│ │ ├── package-info.java
│ │ ├── Cleanable.java
│ │ ├── TargetConnector.java
│ │ ├── Forwarder.java
│ │ ├── Cleaner.java
│ │ ├── Processor.java
│ │ └── Listener.java
│ │ ├── misc
│ │ ├── package-info.java
│ │ ├── EchoProcessor.java
│ │ └── EchoServer.java
│ │ └── NetUtils.java
├── checkstyle-config.xml
└── pom.xml
└── LICENSE.txt
/README.md:
--------------------------------------------------------------------------------
1 | lookup
2 | ======
3 |
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/.gitignore:
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1 | *.class
2 |
3 | # Package Files #
4 | *.jar
5 | *.war
6 | *.ear
7 |
8 | # Eclipse Files #
9 | *.classpath
10 | *.project
11 | *.settings
12 | target
13 |
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/portforward/nosuppression.xml:
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1 |
2 |
5 |
6 |
7 |
8 |
9 |
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/portforward/src/main/java/com/sharneng/io/package-info.java:
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1 | /*
2 | * Copyright (c) 2013 Original Authors
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 | * General purpose utilities.
18 | *
19 | * @author Kenneth Xu
20 | */
21 | @com.sharneng.util.NonnullByDefault
22 | package com.sharneng.io;
23 |
24 |
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/portforward/src/main/java/com/sharneng/util/package-info.java:
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1 | /*
2 | * Copyright (c) 2013 Original Authors
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 | * Classes related to IO operations.
18 | *
19 | * @author Kenneth Xu
20 | */
21 | @com.sharneng.util.NonnullByDefault
22 | package com.sharneng.util;
23 |
24 |
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/portforward/src/main/java/com/sharneng/net/package-info.java:
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1 | /*
2 | * Copyright (c) 2013 Original Authors
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 | * Classes related to network operations.
18 | *
19 | * @author Kenneth Xu
20 | */
21 | @com.sharneng.util.NonnullByDefault
22 | package com.sharneng.net;
23 |
24 |
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/portforward/src/main/java/com/sharneng/net/portforward/package-info.java:
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1 | /*
2 | * Copyright (c) 2013 Original Authors
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 | * Classes to implement the TCP/IP port forwarding.
18 | *
19 | * @author Kenneth Xu
20 | */
21 | @com.sharneng.util.NonnullByDefault
22 | package com.sharneng.net.portforward;
23 |
24 |
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/portforward/src/main/java/com/sharneng/net/misc/package-info.java:
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1 | /*
2 | * Copyright (c) 2013 Original Authors
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 | * Classes to implement an echo network server to test the connectivity.
18 | *
19 | * @author Kenneth Xu
20 | */
21 | @com.sharneng.util.NonnullByDefault
22 | package com.sharneng.net.misc;
23 |
24 |
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/portforward/src/main/java/com/sharneng/net/portforward/Cleanable.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Copyright 2002-2013 the original author or authors.
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 | */package com.sharneng.net.portforward;
16 |
17 | /**
18 | *
19 | * @author Kenneth Xu
20 | *
21 | */
22 | interface Cleanable {
23 | boolean isCompleted();
24 |
25 | void close();
26 | }
27 |
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/portforward/src/main/java/com/sharneng/util/NonnullByDefault.java:
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1 | package com.sharneng.util;
2 |
3 | import java.lang.annotation.Documented;
4 | import java.lang.annotation.ElementType;
5 | import java.lang.annotation.Retention;
6 | import java.lang.annotation.RetentionPolicy;
7 |
8 | import javax.annotation.Nonnull;
9 | import javax.annotation.meta.TypeQualifierDefault;
10 |
11 | /**
12 | * Default annotation to set package-level {@link javax.annotation.Nonnull Nonnull} for null check analysis. Apply this
13 | * annotation to package definition makes every field, parameter and method return value of any classes in the package
14 | * {@link javax.annotation.Nonnull Nonnull} unless otherwise annotated with {@link javax.annotation.CheckForNull
15 | * CheckForNull}.
16 | */
17 | @Documented
18 | @Nonnull
19 | @TypeQualifierDefault({ ElementType.PARAMETER, ElementType.FIELD, ElementType.METHOD })
20 | @Retention(RetentionPolicy.RUNTIME)
21 | public @interface NonnullByDefault {
22 | }
23 |
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/portforward/src/main/java/com/sharneng/net/portforward/TargetConnector.java:
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1 | /*
2 | * Copyright 2002-2013 the original author or authors.
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 | package com.sharneng.net.portforward;
17 |
18 | import org.apache.commons.logging.Log;
19 | import org.apache.commons.logging.LogFactory;
20 |
21 | import java.net.InetSocketAddress;
22 | import java.net.Socket;
23 |
24 | /**
25 | *
26 | * @author Kenneth Xu
27 | *
28 | */
29 | class TargetConnector {
30 | private static Log log = LogFactory.getLog(TargetConnector.class);
31 | private final InetSocketAddress to;
32 |
33 | public TargetConnector(InetSocketAddress to) {
34 | log.trace("new ServerConnectionManager( InetSocketAddress )");
35 | this.to = to;
36 | }
37 |
38 | public Socket openSocket() throws java.io.IOException {
39 | return new Socket(to.getAddress(), to.getPort());
40 | }
41 |
42 | }
43 |
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/portforward/src/main/java/com/sharneng/net/portforward/Forwarder.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Copyright 2002-2013 the original author or authors.
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 | package com.sharneng.net.portforward;
17 |
18 | import com.sharneng.net.NetUtils;
19 |
20 | /**
21 | * The command line entry for TCP/IP port forwarding.
22 | *
23 | * @author Kenneth Xu
24 | *
25 | */
26 | public final class Forwarder {
27 |
28 | private Forwarder() {
29 | }
30 |
31 | /**
32 | * The command line entry.
33 | *
34 | * @param args
35 | * command line arguments
36 | * @throws Exception
37 | * when error occurs
38 | */
39 | public static void main(String[] args) throws Exception {
40 | Listener listener = new Listener(NetUtils.parseInetSocketAddress(args[0]),
41 | NetUtils.parseInetSocketAddress(args[1]));
42 | listener.run();
43 | listener.close();
44 | }
45 |
46 | }
47 |
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/portforward/src/main/java/com/sharneng/net/portforward/Cleaner.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Copyright 2002-2013 the original author or authors.
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 | package com.sharneng.net.portforward;
17 |
18 | import java.util.ArrayList;
19 | import java.util.List;
20 | import java.util.Iterator;
21 |
22 | import org.apache.commons.logging.Log;
23 | import org.apache.commons.logging.LogFactory;
24 |
25 | /**
26 | *
27 | * @author Kenneth Xu
28 | *
29 | */
30 | class Cleaner implements Runnable {
31 | private static final int CLEAN_INTERVAL = 3000;
32 |
33 | private static final Log log = LogFactory.getLog(Cleaner.class);
34 |
35 | private final List list = new ArrayList();
36 |
37 | @Override
38 | public void run() {
39 | while (true) {
40 | cleanup();
41 | try {
42 | wait(CLEAN_INTERVAL);
43 | } catch (InterruptedException e) {
44 | log.error(e.getMessage(), e);
45 | }
46 | }
47 | }
48 |
49 | private synchronized void cleanup() {
50 | for (Iterator itr = list.iterator(); itr.hasNext();) {
51 | Cleanable p = itr.next();
52 | if (p.isCompleted()) {
53 | p.close();
54 | itr.remove();
55 | }
56 | }
57 | }
58 |
59 | public synchronized void add(Cleanable p) {
60 | list.add(p);
61 | }
62 |
63 | }
64 |
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/portforward/src/main/java/com/sharneng/net/misc/EchoProcessor.java:
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1 | /*
2 | * Copyright 2002-2013 the original author or authors.
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 | package com.sharneng.net.misc;
17 |
18 | import com.sharneng.io.IOUtils;
19 | import com.sharneng.net.NetUtils;
20 |
21 | import java.io.IOException;
22 | import java.net.Socket;
23 |
24 | import org.apache.commons.logging.Log;
25 | import org.apache.commons.logging.LogFactory;
26 |
27 | class EchoProcessor implements Runnable {
28 | private static final Log log = LogFactory.getLog(EchoProcessor.class);
29 |
30 | private final boolean isCompleted = false;
31 |
32 | private final Socket socket;
33 |
34 | public EchoProcessor(Socket source) {
35 | this.socket = source;
36 | }
37 |
38 | public void process() {
39 | Thread t = new Thread(this);
40 | t.start();
41 |
42 | if (log.isTraceEnabled()) {
43 | log.trace("started new process threads: " + this);
44 | }
45 | }
46 |
47 | public boolean isCompleted() {
48 | return isCompleted;
49 | }
50 |
51 | public void close() {
52 | if (log.isTraceEnabled()) log.trace("close() called on " + this);
53 | if (socket.isClosed()) {
54 | if (log.isTraceEnabled()) log.trace("socket already closed: " + socket);
55 | } else {
56 | if (log.isTraceEnabled()) log.trace("closing socket: " + socket);
57 | NetUtils.close(socket);
58 | }
59 | }
60 |
61 | @Override
62 | public String toString() {
63 | return this.getClass().getName() + "(" + socket + ")";
64 | }
65 |
66 | @Override
67 | public void run() {
68 | try {
69 | IOUtils.copyStream(socket.getInputStream(), socket.getOutputStream(), false);
70 | } catch (IOException e) {
71 | log.error(e.getMessage(), e);
72 | } finally {
73 | close();
74 | }
75 | }
76 |
77 | }
78 |
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/portforward/src/main/java/com/sharneng/net/misc/EchoServer.java:
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1 | /*
2 | * Copyright 2002-2013 the original author or authors.
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 | package com.sharneng.net.misc;
17 |
18 | import com.sharneng.net.NetUtils;
19 |
20 | import org.apache.commons.logging.Log;
21 | import org.apache.commons.logging.LogFactory;
22 |
23 | import java.io.IOException;
24 | import java.net.InetSocketAddress;
25 | import java.net.ServerSocket;
26 | import java.net.Socket;
27 |
28 | import javax.annotation.CheckForNull;
29 |
30 | class EchoServer implements Runnable {
31 | private static Log log = LogFactory.getLog(EchoServer.class);
32 | private final ServerSocket serverSocket;
33 | private final InetSocketAddress from;
34 | @CheckForNull
35 | private Throwable exception;
36 |
37 | // private Cleaner cleaner = new Cleaner();
38 |
39 | public EchoServer(InetSocketAddress from) throws IOException {
40 | this.from = from;
41 | serverSocket = new ServerSocket();
42 | serverSocket.setReuseAddress(true);
43 | serverSocket.bind(from);
44 | String hostname = from.getHostName();
45 | if (hostname == null) hostname = "*";
46 | log.info("Ready to accept client connection on " + hostname + ":" + from.getPort());
47 | }
48 |
49 | @Override
50 | public void run() {
51 | Socket source = null;
52 | // new Thread(cleaner).start();
53 | while (true) {
54 | try {
55 | source = serverSocket.accept();
56 | log.trace("accepted client connection");
57 | new EchoProcessor(source).process();
58 | } catch (IOException e) {
59 | String msg = "Failed to accept client connection on port " + from.getPort();
60 | log.error(msg, e);
61 | exception = e;
62 | return;
63 | }
64 | }
65 | }
66 |
67 | public void close() {
68 | if (!serverSocket.isClosed()) {
69 | try {
70 | serverSocket.close();
71 | } catch (IOException e) {
72 | log.error(e.getMessage(), e);
73 | }
74 | }
75 | }
76 |
77 | public static void main(String[] args) throws Throwable {
78 | EchoServer server = new EchoServer(NetUtils.parseInetSocketAddress(args[0]));
79 | server.run();
80 | if (server.exception != null) throw server.exception;
81 | }
82 | }
83 |
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/portforward/src/main/java/com/sharneng/net/portforward/Processor.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Copyright 2002-2007 the original author or authors.
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 com.sharneng.net.portforward;
18 |
19 | import com.sharneng.io.IOUtils;
20 | import com.sharneng.net.NetUtils;
21 |
22 | import java.net.Socket;
23 |
24 | import org.apache.commons.logging.Log;
25 | import org.apache.commons.logging.LogFactory;
26 |
27 | /**
28 | *
29 | * @author Kenneth Xu
30 | *
31 | */
32 | class Processor implements Cleanable {
33 | private static final Log log = LogFactory.getLog(Processor.class);
34 |
35 | private final Socket source;
36 | private final Socket target;
37 | private final Cleaner cleaner;
38 |
39 | private final Copier req;
40 | private final Copier res;
41 |
42 | public Processor(Socket source, Socket target, Cleaner cleaner) {
43 | this.source = source;
44 | this.target = target;
45 | this.cleaner = cleaner;
46 | req = new Copier(source, target);
47 | res = new Copier(target, source);
48 | cleaner.add(this);
49 | }
50 |
51 | public void process() {
52 |
53 | new Thread(req).start();
54 | new Thread(res).start();
55 | if (log.isTraceEnabled()) {
56 | log.trace("started new request stream copier threads: " + req);
57 | log.trace("started new response stream copier threads: " + res);
58 | }
59 | }
60 |
61 | @Override
62 | public boolean isCompleted() {
63 | return req.isCompleted && res.isCompleted;
64 | }
65 |
66 | @Override
67 | public void close() {
68 | if (log.isTraceEnabled()) log.trace("close() called on " + this);
69 | NetUtils.close(source);
70 | NetUtils.close(target);
71 | }
72 |
73 | @Override
74 | public String toString() {
75 | return this.getClass().getName() + "(from " + source + " to " + target + ")";
76 | }
77 |
78 | private class Copier implements Runnable {
79 | private final Socket in;
80 | private final Socket out;
81 | private boolean isCompleted = false;
82 |
83 | Copier(Socket in, Socket out) {
84 | this.in = in;
85 | this.out = out;
86 | }
87 |
88 | @Override
89 | public void run() {
90 | try {
91 | IOUtils.copyStream(in.getInputStream(), out.getOutputStream(), false);
92 | } catch (java.net.SocketException e) {
93 | NetUtils.shutdown(source);
94 | NetUtils.shutdown(target);
95 | log.debug(this, e);
96 | } catch (Exception e) {
97 | log.error(this, e);
98 | } finally {
99 | this.isCompleted = true;
100 | if (cleaner != null) synchronized (cleaner) {
101 | cleaner.notify();
102 | }
103 | }
104 | }
105 |
106 | @Override
107 | public String toString() {
108 | return this.getClass().getName() + "(from " + in + " to " + out + ")";
109 | }
110 |
111 | }
112 | }
113 |
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/portforward/src/main/java/com/sharneng/net/portforward/Listener.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Copyright 2002-2013 the original author or authors.
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 | package com.sharneng.net.portforward;
17 |
18 | import org.apache.commons.logging.Log;
19 | import org.apache.commons.logging.LogFactory;
20 |
21 | import java.io.Closeable;
22 | import java.io.IOException;
23 | import java.net.InetSocketAddress;
24 | import java.net.ServerSocket;
25 | import java.net.Socket;
26 |
27 | import javax.annotation.CheckForNull;
28 |
29 | /**
30 | * Listens on the given port to accept connection and forward it to target.
31 | *
32 | * @author Kenneth Xu
33 | *
34 | */
35 | public class Listener implements Runnable, Closeable {
36 | private static Log log = LogFactory.getLog(Listener.class);
37 | private final ServerSocket serverSocket;
38 | private final InetSocketAddress from, to;
39 | @CheckForNull
40 | private Throwable exception;
41 | private final Cleaner cleaner = new Cleaner();
42 |
43 | /**
44 | * Gets the exception occurred if any.
45 | *
46 | * @return the exception if any error occurred
47 | */
48 | @CheckForNull
49 | public Throwable getException() {
50 | return exception;
51 | }
52 |
53 | /**
54 | * Constructs a new instance of Listener.
55 | *
56 | * @param from
57 | * the address to listen for connections
58 | * @param to
59 | * the address to forward connections to
60 | * @throws IOException
61 | * when something is not going write when network operation
62 | */
63 | public Listener(InetSocketAddress from, InetSocketAddress to) throws IOException {
64 | this.from = from;
65 | this.to = to;
66 | serverSocket = new ServerSocket();
67 | serverSocket.setReuseAddress(true);
68 | serverSocket.bind(from);
69 | String hostname = from.getHostName();
70 | if (hostname == null) hostname = "*";
71 | log.info("Ready to accept client connection on " + hostname + ":" + from.getPort());
72 | }
73 |
74 | /**
75 | * {@inheritDoc}
76 | */
77 | @Override
78 | public void run() {
79 | Socket source = null;
80 | new Thread(cleaner).start();
81 | while (true) {
82 | try {
83 | TargetConnector connector = new TargetConnector(to);
84 | source = serverSocket.accept();
85 | log.trace("accepted client connection");
86 | Socket target = connector.openSocket();
87 | new Processor(source, target, cleaner).process();
88 | } catch (IOException e) {
89 | String msg = "Failed to accept client connection on port " + from.getPort();
90 | log.error(msg, e);
91 | exception = e;
92 | return;
93 | }
94 | }
95 | }
96 |
97 | /**
98 | * Closes this listener and associated resources.
99 | */
100 | @Override
101 | public void close() {
102 | if (!serverSocket.isClosed()) {
103 | try {
104 | serverSocket.close();
105 | } catch (IOException e) {
106 | log.error(e.getMessage(), e);
107 | }
108 | }
109 | }
110 | }
111 |
--------------------------------------------------------------------------------
/portforward/src/main/java/com/sharneng/net/NetUtils.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Copyright 2002-2013 the original author or authors.
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 | package com.sharneng.net;
17 |
18 | import java.net.InetSocketAddress;
19 | import java.net.Socket;
20 |
21 | import org.apache.commons.logging.Log;
22 | import org.apache.commons.logging.LogFactory;
23 |
24 | /**
25 | * Networking related static utilties methods are defined in this class.
26 | *
27 | * @author Kenneth Xu
28 | *
29 | */
30 | public final class NetUtils {
31 | private static final Log log = LogFactory.getLog(NetUtils.class);
32 |
33 | private NetUtils() {
34 | }
35 |
36 | /**
37 | * Parse an {@link InetSocketAddress} object the given string. The endPoint is in format of
38 | * [hostname:]port. It can be either a port number, or a hostname and port number separated by the
39 | * character ':'.
40 | *
41 | *
42 | * For example, 'www.company.com:80', '1234' and ' localhost:3344' are all
43 | * valid end points.
44 | *
45 | * @param endPoint
46 | * the string to parse.
47 | * @return the {@linkplain InetSocketAddress} parsed from string.
48 | * @exception NumberFormatException
49 | * if the port number is not a integer.
50 | */
51 | public static InetSocketAddress parseInetSocketAddress(String endPoint) {
52 | String hostname = null;
53 | String portString;
54 | int port;
55 |
56 | int index = endPoint.indexOf(":");
57 | if (index >= 0) {
58 | hostname = endPoint.substring(0, index);
59 | portString = endPoint.substring(index + 1);
60 | } else {
61 | portString = endPoint;
62 | }
63 | port = Integer.parseInt(portString);
64 | return hostname == null ? new InetSocketAddress(port) : new InetSocketAddress(hostname, port);
65 | }
66 |
67 | /**
68 | * Quietly close a {@linkplain Socket} object. It tries to shutdown the input and output of the socket before close.
69 | * Exceptions are ignored.
70 | *
71 | * @param socket
72 | * the Socket object to close
73 | * @see #shutdown(Socket)
74 | */
75 | public static void close(Socket socket) {
76 | if (socket == null) return;
77 |
78 | if (!socket.isClosed()) {
79 | shutdown(socket);
80 | try {
81 | socket.close();
82 | } catch (Throwable e) {
83 | log.debug(e.getMessage(), e);
84 | }
85 | }
86 | }
87 |
88 | /**
89 | * Quietly shutdown the input of a {@linkplain Socket}. Exception are ignored.
90 | *
91 | * @param socket
92 | * the socket to shutdown the input
93 | */
94 | public static void shutdownInput(Socket socket) {
95 | if (socket == null) return;
96 | try {
97 | if (!socket.isInputShutdown()) socket.shutdownInput();
98 | } catch (Throwable e) {
99 | log.debug(e.getMessage(), e);
100 | }
101 | }
102 |
103 | /**
104 | * Quietly shutdown the output of a {@linkplain Socket}. Exceptions are ignored.
105 | *
106 | * @param socket
107 | * the socket to shutdown the output
108 | * @see Socket#shutdownOutput()
109 | */
110 | public static void shutdownOutput(Socket socket) {
111 | if (socket == null) return;
112 | try {
113 | if (!socket.isOutputShutdown()) socket.shutdownOutput();
114 | } catch (Throwable e) {
115 | log.debug(e.getMessage(), e);
116 | }
117 | }
118 |
119 | /**
120 | * Quietly shutdown both input and output of a {@linkplan Socket}. Exceptions are ignored.
121 | *
122 | * @param socket
123 | * the socket to shutdown
124 | * @see #shutdownInput(Socket)
125 | * @see #shutdownOutput(Socket)
126 | */
127 | public static void shutdown(Socket socket) {
128 | shutdownInput(socket);
129 | shutdownOutput(socket);
130 | }
131 |
132 | }
133 |
--------------------------------------------------------------------------------
/portforward/src/main/java/com/sharneng/io/IOUtils.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Copyright 2002-2013 the original author or authors.
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 | package com.sharneng.io;
17 |
18 | import java.io.IOException;
19 | import java.io.InputStream;
20 | import java.io.OutputStream;
21 |
22 | import org.apache.commons.logging.Log;
23 | import org.apache.commons.logging.LogFactory;
24 |
25 | /**
26 | * IO related static utilities methods are defined in this class.
27 | *
28 | * @author Kenneth Xu
29 | *
30 | */
31 | public final class IOUtils {
32 | private static final Log log = LogFactory.getLog(IOUtils.class);
33 |
34 | private static final int BUF_SIZE = 512;
35 |
36 | private IOUtils() {
37 | }
38 |
39 | /**
40 | * Read everything from in and write to out until reachs the end of the input stream. Both
41 | * in and out are then quitely closed (see {@link #close(InputStream)} ).
42 | *
43 | * @param in
44 | * data copy from
45 | * @param out
46 | * data copy to
47 | * @throws IOException
48 | * IO error occured when coping.
49 | * @see #copyStream(InputStream, OutputStream, boolean)
50 | */
51 | public static void copyStream(InputStream in, OutputStream out) throws IOException {
52 | copyStream(in, out, true);
53 | }
54 |
55 | /**
56 | * Read everything from in and write to out until reachs the end of the input stream. If
57 | * closeOnFinish is true, it quitely closes both in and out (see
58 | * {@link #close(InputStream)}) before retun. Otherwise, it leaves both of them open.
59 | *
60 | * @param in
61 | * data copy from
62 | * @param out
63 | * data copy to
64 | * @param closeOnFinish
65 | * passing true to close both stream before method return
66 | * @throws IOException
67 | * IO error occured when coping.
68 | * @see #copyStream(InputStream, OutputStream)
69 | */
70 | public static void copyStream(InputStream in, OutputStream out, boolean closeOnFinish) throws IOException {
71 | byte[] buf = new byte[BUF_SIZE];
72 | int count;
73 | try {
74 | while ((count = in.read(buf)) != -1) {
75 | out.write(buf, 0, count);
76 | }
77 | } finally {
78 | if (closeOnFinish) close(in);
79 | if (closeOnFinish) close(out);
80 | }
81 | }
82 |
83 | /**
84 | * Quietly close a {@linkplain java.io.InputStream}. Exceptions are discarded.
85 | *
86 | * @param in
87 | * the input stream to close
88 | * @see #close(InputStream, boolean)
89 | */
90 | public static void close(InputStream in) {
91 | close(in, false);
92 | }
93 |
94 | /**
95 | * Quietly close a {@linkplain java.io.InputStream} without throwing any exception. Exceptions will be logged as
96 | * error if the logError is true.
97 | *
98 | * @param in
99 | * the input stream to close
100 | * @param logError
101 | * true to log exception as error
102 | * @see #close(InputStream)
103 | * @see #close(OutputStream, boolean)
104 | */
105 | public static void close(InputStream in, boolean logError) {
106 | if (in != null) {
107 | try {
108 | in.close();
109 | } catch (Throwable t) {
110 | if (logError) log.error(t.getMessage(), t);
111 | else log.debug(t.getMessage(), t);
112 | }
113 | }
114 | }
115 |
116 | /**
117 | * Quietly close a {@linkplain java.io.OutputStream}. Exceptions are discarded.
118 | *
119 | * @param out
120 | * the output stream to close
121 | * @see #close(OutputStream, boolean)
122 | */
123 | public static void close(OutputStream out) {
124 | close(out, false);
125 | }
126 |
127 | /**
128 | * Quietly close a {@linkplain java.io.OutputStream} without throwing any exception. Exceptions will be logged as
129 | * error if the logError is true.
130 | *
131 | * @param out
132 | * the output stream to close
133 | * @param logError
134 | * true to log exception as error
135 | * @see #close(OutputStream)
136 | * @see #close(InputStream, boolean)
137 | */
138 | public static void close(OutputStream out, boolean logError) {
139 | if (out != null) {
140 | try {
141 | out.close();
142 | } catch (Throwable t) {
143 | if (logError) log.error(t.getMessage(), t);
144 | else log.debug(t.getMessage(), t);
145 | }
146 | }
147 | }
148 | }
149 |
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/portforward/checkstyle-config.xml:
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151 |
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/portforward/pom.xml:
--------------------------------------------------------------------------------
1 |
2 |
3 | 4.0.0
4 |
5 | com.sharneng
6 | portforward
7 | 1.0.1-SNAPSHOT
8 | jar
9 |
10 |
11 | org.sonatype.oss
12 | oss-parent
13 | 7
14 |
15 |
16 | portforward
17 | http://kennethxu.github.io/portforward
18 |
19 |
20 | UTF-8
21 | 3.0.1
22 |
24 | 1.1
25 | 4.8.2
26 | 1.4.12
27 |
28 | A popular Java based TCP/IP port forwarding utility
29 |
30 |
31 | The Apache Software License, Version 2.0
32 | http://www.apache.org/licenses/LICENSE-2.0.txt
33 | repo
34 |
35 |
36 |
37 | scm:git:https://github.com/kennethxu/portforward.git
38 | scm:git:https://github.com/kennethxu/portforward.git
39 | https://github.com/kennethxu/portforward
40 |
41 |
42 |
43 | kennethxu
44 | Kenneth Xu
45 | kennethxu at sharneng dot com
46 |
47 |
48 |
49 |
50 |
51 |
52 |
53 | org.apache.maven.plugins
54 | maven-release-plugin
55 | 2.2.1
56 |
57 |
58 | default
59 |
60 | perform
61 |
62 |
63 | lookup/pom.xml
64 |
65 |
66 |
67 |
68 |
69 | org.apache.maven.plugins
70 | maven-compiler-plugin
71 |
72 | 1.6
73 | 1.6
74 |
75 |
76 |
77 | org.codehaus.mojo
78 | cobertura-maven-plugin
79 |
80 |
81 |
82 |
83 |
84 |
85 |
86 |
87 |
88 |
89 | org.apache.maven.plugins
90 | maven-surefire-plugin
91 | 2.12.4
92 |
93 |
94 | false
95 | true
96 |
97 | **/*Test.java
98 |
99 | true
100 |
101 |
102 |
103 |
104 |
105 |
106 | org.codehaus.mojo
107 | cobertura-maven-plugin
108 |
109 |
110 |
111 |
112 |
113 |
114 |
115 |
116 | maven-assembly-plugin
117 | 2.4
118 |
119 |
120 |
121 | com.sharneng.net.portforward.Forwarder
122 |
123 |
124 |
125 | cli
126 |
127 |
128 |
129 |
130 | make-assembly
131 | package
132 |
133 | single
134 |
135 |
136 |
137 |
138 |
139 |
140 |
141 |
142 |
143 |
144 | org.apache.maven.plugins
145 | maven-checkstyle-plugin
146 | 2.8
147 |
148 | checkstyle-config.xml
149 |
150 |
151 |
152 |
153 |
154 |
155 |
156 | junit
157 | junit
158 | ${junit.version}
159 | test
160 |
161 |
162 | org.mockito
163 | mockito-all
164 | 1.8.5
165 | test
166 |
167 |
168 | org.powermock
169 | powermock-module-junit4
170 | ${powermock.version}
171 | test
172 |
173 |
174 | org.powermock
175 | powermock-api-mockito
176 | ${powermock.version}
177 | test
178 |
179 |
180 | org.hamcrest
181 | hamcrest-all
182 | ${hamcrest.version}
183 | jar
184 | test
185 |
186 |
187 | com.google.code.findbugs
188 | annotations
189 | 2.0.1
190 | provided
191 |
192 |
193 | org.slf4j
194 | slf4j-nop
195 | 1.7.2
196 | test
197 |
198 |
199 | com.google.code.findbugs
200 | jsr305
201 | 2.0.1
202 |
203 |
204 | commons-logging
205 | commons-logging
206 | 1.1.3
207 |
208 |
209 |
210 |
--------------------------------------------------------------------------------
/LICENSE.txt:
--------------------------------------------------------------------------------
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3 | Version 2.0, January 2004
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