[3102] | 1 | package nu.fw.jeti.plugins.filetransfer.socks5.jsocks; |
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| 2 | import java.io.*; |
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| 3 | import java.net.*; |
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| 4 | import java.security.MessageDigest; |
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| 5 | import java.security.NoSuchAlgorithmException; |
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| 6 | |
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| 7 | import nu.fw.jeti.plugins.filetransfer.socks5.Socks5Send; |
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| 8 | import nu.fw.jeti.util.I18N; |
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| 9 | import nu.fw.jeti.util.Popups; |
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| 10 | |
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| 11 | |
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| 12 | /** |
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| 13 | SOCKS4 and SOCKS5 proxy, handles both protocols simultaniously. |
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| 14 | Implements all SOCKS commands, including UDP relaying. |
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| 15 | <p> |
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| 16 | In order to use it you will need to implement ServerAuthenticator |
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| 17 | interface. There is an implementation of this interface which does |
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| 18 | no authentication ServerAuthenticatorNone, but it is very dangerous |
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| 19 | to use, as it will give access to your local network to anybody |
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| 20 | in the world. One should never use this authentication scheme unless |
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| 21 | one have pretty good reason to do so. |
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| 22 | There is a couple of other authentication schemes in socks.server package. |
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| 23 | @see socks.server.ServerAuthenticator |
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| 24 | */ |
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| 25 | public class ProxyServer implements Runnable{ |
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| 26 | |
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| 27 | ServerAuthenticator auth; |
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| 28 | ProxyMessage msg = null; |
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| 29 | |
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| 30 | Socket sock=null,remote_sock=null; |
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| 31 | ServerSocket ss=null; |
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| 32 | UDPRelayServer relayServer = null; |
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| 33 | InputStream in; //,remote_in; |
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| 34 | OutputStream out;//,remote_out; |
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| 35 | File file; |
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| 36 | String sha1Digest; |
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| 37 | Thread pst; |
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| 38 | Socks5Send send; |
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| 39 | |
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| 40 | int mode; |
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| 41 | static final int START_MODE = 0; |
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| 42 | static final int ACCEPT_MODE = 1; |
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| 43 | static final int PIPE_MODE = 2; |
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| 44 | static final int ABORT_MODE = 3; |
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| 45 | |
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| 46 | static final int BUF_SIZE = 8192; |
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| 47 | |
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| 48 | // Thread pipe_thread1,pipe_thread2; |
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| 49 | long lastReadTime; |
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| 50 | |
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| 51 | static int iddleTimeout = 180000; //3 minutes |
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| 52 | static int acceptTimeout = 180000; //3 minutes |
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| 53 | |
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| 54 | static PrintStream log = null; |
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| 55 | static Proxy proxy; |
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| 56 | |
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| 57 | |
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| 58 | //Public Constructors |
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| 59 | ///////////////////// |
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| 60 | |
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| 61 | |
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| 62 | /** |
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| 63 | Creates a proxy server with given Authentication scheme. |
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| 64 | @param auth Authentication scheme to be used. |
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| 65 | */ |
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| 66 | public ProxyServer(ServerAuthenticator auth){ |
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| 67 | this.auth = auth; |
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| 68 | } |
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| 69 | |
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| 70 | //Other constructors |
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| 71 | //////////////////// |
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| 72 | |
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| 73 | public ProxyServer(ServerAuthenticator auth,Socket s,File file,String digest,Socks5Send send){ |
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| 74 | this.auth = auth; |
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| 75 | this.sock = s; |
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| 76 | this.file = file; |
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| 77 | this.send = send; |
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| 78 | sha1Digest = digest; |
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| 79 | mode = START_MODE; |
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| 80 | setLog(System.out); |
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| 81 | pst = new Thread(this); |
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| 82 | pst.start(); |
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| 83 | } |
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| 84 | |
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| 85 | //Public methods |
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| 86 | ///////////////// |
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| 87 | |
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| 88 | /** |
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| 89 | Set the logging stream. Specifying null disables logging. |
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| 90 | */ |
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| 91 | public static void setLog(OutputStream out){ |
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| 92 | if(out == null){ |
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| 93 | log = null; |
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| 94 | }else{ |
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| 95 | log = new PrintStream(out,true); |
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| 96 | } |
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| 97 | |
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| 98 | UDPRelayServer.log = log; |
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| 99 | } |
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| 100 | |
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| 101 | /** |
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| 102 | Set proxy. |
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| 103 | <p> |
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| 104 | Allows Proxy chaining so that one Proxy server is connected to another |
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| 105 | and so on. If proxy supports SOCKSv4, then only some SOCKSv5 requests |
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| 106 | can be handled, UDP would not work, however CONNECT and BIND will be |
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| 107 | translated. |
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| 108 | |
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| 109 | @param p Proxy which should be used to handle user requests. |
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| 110 | */ |
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| 111 | public static void setProxy(Proxy p){ |
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| 112 | proxy =p; |
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| 113 | UDPRelayServer.proxy = proxy; |
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| 114 | } |
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| 115 | |
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| 116 | /** |
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| 117 | Get proxy. |
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| 118 | @return Proxy wich is used to handle user requests. |
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| 119 | */ |
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| 120 | public static Proxy getProxy(){ |
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| 121 | return proxy; |
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| 122 | } |
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| 123 | |
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| 124 | /** |
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| 125 | Sets the timeout for connections, how long shoud server wait |
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| 126 | for data to arrive before dropping the connection.<br> |
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| 127 | Zero timeout implies infinity.<br> |
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| 128 | Default timeout is 3 minutes. |
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| 129 | */ |
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| 130 | public static void setIddleTimeout(int timeout){ |
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| 131 | iddleTimeout = timeout; |
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| 132 | } |
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| 133 | /** |
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| 134 | Sets the timeout for BIND command, how long the server should |
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| 135 | wait for the incoming connection.<br> |
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| 136 | Zero timeout implies infinity.<br> |
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| 137 | Default timeout is 3 minutes. |
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| 138 | */ |
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| 139 | public static void setAcceptTimeout(int timeout){ |
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| 140 | acceptTimeout = timeout; |
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| 141 | } |
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| 142 | |
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| 143 | /** |
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| 144 | Sets the timeout for UDPRelay server.<br> |
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| 145 | Zero timeout implies infinity.<br> |
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| 146 | Default timeout is 3 minutes. |
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| 147 | */ |
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| 148 | public static void setUDPTimeout(int timeout){ |
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| 149 | UDPRelayServer.setTimeout(timeout); |
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| 150 | } |
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| 151 | |
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| 152 | /** |
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| 153 | Sets the size of the datagrams used in the UDPRelayServer.<br> |
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| 154 | Default size is 64K, a bit more than maximum possible size of the |
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| 155 | datagram. |
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| 156 | */ |
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| 157 | public static void setDatagramSize(int size){ |
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| 158 | UDPRelayServer.setDatagramSize(size); |
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| 159 | } |
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| 160 | |
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| 161 | |
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| 162 | /** |
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| 163 | Start the Proxy server at given port.<br> |
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| 164 | This methods blocks. |
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| 165 | */ |
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| 166 | public void start(int port){ |
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| 167 | start(port,5,null); |
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| 168 | } |
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| 169 | |
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| 170 | /** |
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| 171 | Create a server with the specified port, listen backlog, and local |
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| 172 | IP address to bind to. The localIP argument can be used on a multi-homed |
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| 173 | host for a ServerSocket that will only accept connect requests to one of |
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| 174 | its addresses. If localIP is null, it will default accepting connections |
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| 175 | on any/all local addresses. The port must be between 0 and 65535, |
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| 176 | inclusive. <br> |
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| 177 | This methods blocks. |
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| 178 | */ |
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| 179 | public void start(int port,int backlog,InetAddress localIP){ |
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| 180 | try{ |
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| 181 | ss = new ServerSocket(port,backlog,localIP); |
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| 182 | log("Starting SOCKS Proxy on:"+ss.getInetAddress().getHostAddress()+":" |
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| 183 | +ss.getLocalPort()); |
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| 184 | while(true){ |
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| 185 | Socket s = ss.accept(); |
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| 186 | log("Accepted from:"+s.getInetAddress().getHostName()+":" |
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| 187 | +s.getPort()); |
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| 188 | ProxyServer ps = new ProxyServer(auth,s,null,null,null); |
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| 189 | (new Thread(ps)).start(); |
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| 190 | } |
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| 191 | }catch(IOException ioe){ |
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| 192 | ioe.printStackTrace(); |
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| 193 | }finally{ |
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| 194 | } |
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| 195 | } |
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| 196 | |
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| 197 | /** |
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| 198 | Stop server operation.It would be wise to interrupt thread running the |
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| 199 | server afterwards. |
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| 200 | */ |
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| 201 | public void stop(){ |
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| 202 | try{ |
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| 203 | if(ss != null) ss.close(); |
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| 204 | }catch(IOException ioe){ |
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| 205 | } |
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| 206 | pst.interrupt(); |
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| 207 | } |
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| 208 | |
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| 209 | //Runnable interface |
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| 210 | //////////////////// |
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| 211 | public void run(){ |
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| 212 | switch(mode){ |
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| 213 | case START_MODE: |
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| 214 | try{ |
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| 215 | startSession(); |
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| 216 | }catch(IOException ioe){ |
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| 217 | handleException(ioe); |
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| 218 | //ioe.printStackTrace(); |
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| 219 | }finally{ |
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| 220 | abort(); |
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| 221 | if(auth!=null) auth.endSession(); |
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| 222 | log("Main thread(client->remote)stopped."); |
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| 223 | } |
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| 224 | break; |
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| 225 | case ACCEPT_MODE: |
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| 226 | try{ |
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| 227 | doAccept(); |
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| 228 | mode = PIPE_MODE; |
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| 229 | //pipe_thread1.interrupt(); //Tell other thread that connection have |
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| 230 | //been accepted. |
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| 231 | // System.out.println("accept pipe"); |
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| 232 | // pipe(remote_in,out); |
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| 233 | }catch(IOException ioe){ |
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| 234 | //log("Accept exception:"+ioe); |
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| 235 | handleException(ioe); |
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| 236 | }finally{ |
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| 237 | abort(); |
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| 238 | log("Accept thread(remote->client) stopped"); |
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| 239 | } |
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| 240 | break; |
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| 241 | case PIPE_MODE: |
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| 242 | try{ |
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| 243 | //System.out.println("pipe mode"); |
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| 244 | //pipe(remote_in,out); |
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| 245 | |
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| 246 | // }catch(IOException ioe){ |
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| 247 | }finally{ |
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| 248 | abort(); |
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| 249 | log("Support thread(remote->client) stopped"); |
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| 250 | } |
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| 251 | break; |
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| 252 | case ABORT_MODE: |
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| 253 | break; |
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| 254 | default: |
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| 255 | log("Unexpected MODE "+mode); |
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| 256 | } |
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| 257 | } |
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| 258 | |
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| 259 | //Private methods |
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| 260 | ///////////////// |
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| 261 | private void startSession() throws IOException{ |
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| 262 | sock.setSoTimeout(iddleTimeout); |
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| 263 | |
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| 264 | try{ |
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| 265 | auth = auth.startSession(sock); |
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| 266 | }catch(IOException ioe){ |
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| 267 | log("Auth throwed exception:"+ioe); |
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| 268 | auth = null; |
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| 269 | return; |
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| 270 | } |
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| 271 | |
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| 272 | if(auth == null){ //Authentication failed |
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| 273 | log("Authentication failed"); |
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| 274 | return; |
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| 275 | } |
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| 276 | |
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| 277 | in = auth.getInputStream(); |
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| 278 | out = auth.getOutputStream(); |
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| 279 | |
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| 280 | msg = readMsg(in); |
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| 281 | handleRequest(msg); |
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| 282 | } |
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| 283 | |
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| 284 | private void handleRequest(ProxyMessage msg) |
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| 285 | throws IOException{ |
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| 286 | if(!auth.checkRequest(msg)) throw new |
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| 287 | SocksException(Proxy.SOCKS_FAILURE); |
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| 288 | |
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| 289 | if(msg.ip == null){ |
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| 290 | if(msg instanceof Socks5Message){ |
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| 291 | // msg.ip = InetAddress.getByName(msg.host); |
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| 292 | }else |
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| 293 | throw new SocksException(Proxy.SOCKS_FAILURE); |
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| 294 | } |
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| 295 | log(msg); |
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| 296 | |
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| 297 | switch(msg.command){ |
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| 298 | case Proxy.SOCKS_CMD_CONNECT: |
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| 299 | onConnect(msg); |
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| 300 | break; |
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| 301 | case Proxy.SOCKS_CMD_BIND: |
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| 302 | //onBind(msg); |
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| 303 | break; |
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| 304 | case Proxy.SOCKS_CMD_UDP_ASSOCIATE: |
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| 305 | // onUDP(msg); |
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| 306 | break; |
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| 307 | default: |
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| 308 | throw new SocksException(Proxy.SOCKS_CMD_NOT_SUPPORTED); |
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| 309 | } |
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| 310 | } |
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| 311 | |
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| 312 | private void handleException(IOException ioe){ |
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| 313 | |
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| 314 | Popups.messagePopup(I18N.gettext("filetransfer.Problem_during_file_transfer,_transfer_aborted"),I18N.gettext("filetransfer.File_Transfer")); |
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| 315 | send.finished(); |
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| 316 | |
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| 317 | ioe.printStackTrace(); |
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| 318 | |
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| 319 | //If we couldn't read the request, return; |
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| 320 | if(msg == null) return; |
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| 321 | //If have been aborted by other thread |
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| 322 | if(mode == ABORT_MODE) return; |
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| 323 | //If the request was successfully completed, but exception happened later |
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| 324 | if(mode == PIPE_MODE) return; |
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| 325 | |
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| 326 | int error_code = Proxy.SOCKS_FAILURE; |
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| 327 | |
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| 328 | if(ioe instanceof SocksException) |
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| 329 | error_code = ((SocksException)ioe).errCode; |
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| 330 | else if(ioe instanceof NoRouteToHostException) |
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| 331 | error_code = Proxy.SOCKS_HOST_UNREACHABLE; |
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| 332 | else if(ioe instanceof ConnectException) |
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| 333 | error_code = Proxy.SOCKS_CONNECTION_REFUSED; |
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| 334 | else if(ioe instanceof InterruptedIOException) |
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| 335 | error_code = Proxy.SOCKS_TTL_EXPIRE; |
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| 336 | |
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| 337 | if(error_code > Proxy.SOCKS_ADDR_NOT_SUPPORTED || error_code < 0){ |
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| 338 | error_code = Proxy.SOCKS_FAILURE; |
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| 339 | } |
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| 340 | |
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| 341 | sendErrorMessage(error_code); |
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| 342 | } |
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| 343 | |
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| 344 | private void onConnect(ProxyMessage msg) throws IOException{ |
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| 345 | Socket s; |
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| 346 | ProxyMessage response = null; |
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| 347 | |
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| 348 | // if(proxy == null) |
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| 349 | // s = new Socket(msg.ip,msg.port); |
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| 350 | // else |
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| 351 | // s = new SocksSocket(proxy,msg.ip,msg.port); |
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| 352 | |
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| 353 | // System.out.println(sha1Digest); |
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| 354 | // System.out.println(msg.host); |
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| 355 | |
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| 356 | if(msg.host.equals(sha1Digest) && msg.port==0) |
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| 357 | { |
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| 358 | log("Connected to "+msg.host+":"+msg.port); |
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| 359 | |
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| 360 | if(msg instanceof Socks5Message){ |
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| 361 | response = new Socks5Message(Proxy.SOCKS_SUCCESS, |
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| 362 | msg.host, |
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| 363 | msg.port); |
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| 364 | } |
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| 365 | |
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| 366 | //response = new Socks4Message(Socks4Message.REPLY_OK, s.getLocalAddress(),s.getLocalPort()); |
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| 367 | |
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| 368 | response.write(out); |
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| 369 | startPipe(null); |
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| 370 | } |
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| 371 | else |
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| 372 | { |
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| 373 | System.out.println("invalid entry"); |
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| 374 | throw new ConnectException(); |
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| 375 | } |
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| 376 | |
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| 377 | } |
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| 378 | |
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| 379 | private void onBind(ProxyMessage msg) throws IOException{ |
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| 380 | ProxyMessage response = null; |
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| 381 | |
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| 382 | if(proxy == null) |
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| 383 | ss = new ServerSocket(0); |
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| 384 | else |
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| 385 | ss = new SocksServerSocket(proxy, msg.ip, msg.port); |
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| 386 | |
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| 387 | ss.setSoTimeout(acceptTimeout); |
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| 388 | |
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| 389 | log("Trying accept on "+ss.getInetAddress()+":"+ss.getLocalPort()); |
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| 390 | |
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| 391 | if(msg.version == 5) |
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| 392 | response = new Socks5Message(Proxy.SOCKS_SUCCESS,ss.getInetAddress(), |
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| 393 | ss.getLocalPort()); |
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| 394 | else |
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| 395 | response = new Socks4Message(Socks4Message.REPLY_OK, |
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| 396 | ss.getInetAddress(), |
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| 397 | ss.getLocalPort()); |
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| 398 | response.write(out); |
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| 399 | |
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| 400 | mode = ACCEPT_MODE; |
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| 401 | |
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| 402 | //pipe_thread1 = Thread.currentThread(); |
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| 403 | //pipe_thread2 = new Thread(this); |
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| 404 | //pipe_thread2.start(); |
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| 405 | |
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| 406 | //Make timeout infinit. |
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| 407 | sock.setSoTimeout(0); |
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| 408 | int eof=0; |
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| 409 | |
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| 410 | try{ |
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| 411 | while((eof=in.read())>=0){ |
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| 412 | if(mode != ACCEPT_MODE){ |
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| 413 | if(mode != PIPE_MODE) return;//Accept failed |
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| 414 | |
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| 415 | //remote_out.write(eof); |
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| 416 | break; |
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| 417 | } |
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| 418 | } |
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| 419 | }catch(EOFException eofe){ |
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| 420 | //System.out.println("EOF exception"); |
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| 421 | return;//Connection closed while we were trying to accept. |
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| 422 | }catch(InterruptedIOException iioe){ |
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| 423 | //Accept thread interrupted us. |
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| 424 | //System.out.println("Interrupted"); |
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| 425 | if(mode != PIPE_MODE) |
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| 426 | return;//If accept thread was not successfull return. |
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| 427 | }finally{ |
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| 428 | //System.out.println("Finnaly!"); |
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| 429 | } |
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| 430 | |
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| 431 | if(eof < 0)//Connection closed while we were trying to accept; |
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| 432 | return; |
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| 433 | |
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| 434 | //Do not restore timeout, instead timeout is set on the |
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| 435 | //remote socket. It does not make any difference. |
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| 436 | |
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| 437 | // pipe(in,remote_out); |
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| 438 | } |
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| 439 | |
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| 440 | private void onUDP(ProxyMessage msg) throws IOException{ |
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| 441 | if(msg.ip.getHostAddress().equals("0.0.0.0")) |
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| 442 | msg.ip = sock.getInetAddress(); |
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| 443 | log("Creating UDP relay server for "+msg.ip+":"+msg.port); |
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| 444 | relayServer = new UDPRelayServer(msg.ip,msg.port, |
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| 445 | Thread.currentThread(),sock,auth); |
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| 446 | |
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| 447 | ProxyMessage response; |
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| 448 | |
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| 449 | response = new Socks5Message(Proxy.SOCKS_SUCCESS, |
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| 450 | relayServer.relayIP,relayServer.relayPort); |
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| 451 | |
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| 452 | response.write(out); |
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| 453 | |
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| 454 | relayServer.start(); |
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| 455 | |
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| 456 | //Make timeout infinit. |
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| 457 | sock.setSoTimeout(0); |
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| 458 | try{ |
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| 459 | while(in.read()>=0) /*do nothing*/; |
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| 460 | }catch(EOFException eofe){ |
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| 461 | } |
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| 462 | } |
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| 463 | |
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| 464 | //Private methods |
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| 465 | ////////////////// |
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| 466 | |
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| 467 | private void doAccept() throws IOException{ |
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| 468 | // System.out.println("doaccept"); |
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| 469 | Socket s; |
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| 470 | long startTime = System.currentTimeMillis(); |
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| 471 | |
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| 472 | while(true){ |
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| 473 | s = ss.accept(); |
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| 474 | if(s.getInetAddress().equals(msg.ip)){ |
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| 475 | //got the connection from the right host |
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| 476 | //Close listenning socket. |
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| 477 | ss.close(); |
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| 478 | break; |
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| 479 | }else if(ss instanceof SocksServerSocket){ |
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| 480 | //We can't accept more then one connection |
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| 481 | s.close(); |
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| 482 | ss.close(); |
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| 483 | throw new SocksException(Proxy.SOCKS_FAILURE); |
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| 484 | }else{ |
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| 485 | if(acceptTimeout!=0){ //If timeout is not infinit |
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| 486 | int newTimeout = acceptTimeout-(int)(System.currentTimeMillis()- |
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| 487 | startTime); |
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| 488 | if(newTimeout <= 0) throw new InterruptedIOException( |
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| 489 | "In doAccept()"); |
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| 490 | ss.setSoTimeout(newTimeout); |
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| 491 | } |
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| 492 | s.close(); //Drop all connections from other hosts |
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| 493 | } |
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| 494 | } |
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| 495 | |
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| 496 | //Accepted connection |
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| 497 | remote_sock = s; |
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| 498 | // remote_in = s.getInputStream(); |
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| 499 | // remote_out = s.getOutputStream(); |
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| 500 | |
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| 501 | //Set timeout |
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| 502 | remote_sock.setSoTimeout(iddleTimeout); |
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| 503 | |
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| 504 | log("Accepted from "+s.getInetAddress()+":"+s.getPort()); |
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| 505 | |
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| 506 | ProxyMessage response; |
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| 507 | |
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| 508 | if(msg.version == 5) |
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| 509 | response = new Socks5Message(Proxy.SOCKS_SUCCESS, s.getInetAddress(), |
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| 510 | s.getPort()); |
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| 511 | else |
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| 512 | response = new Socks4Message(Socks4Message.REPLY_OK, |
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| 513 | s.getInetAddress(), s.getPort()); |
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| 514 | response.write(out); |
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| 515 | } |
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| 516 | |
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| 517 | private ProxyMessage readMsg(InputStream in) throws IOException{ |
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| 518 | PushbackInputStream push_in; |
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| 519 | if(in instanceof PushbackInputStream) |
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| 520 | push_in = (PushbackInputStream) in; |
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| 521 | else |
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| 522 | push_in = new PushbackInputStream(in); |
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| 523 | |
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| 524 | int version = push_in.read(); |
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| 525 | push_in.unread(version); |
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| 526 | |
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| 527 | |
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| 528 | ProxyMessage msg; |
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| 529 | |
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| 530 | if(version == 5){ |
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| 531 | msg = new Socks5Message(push_in,false); |
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| 532 | }else if(version == 4){ |
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| 533 | msg = new Socks4Message(push_in,false); |
---|
| 534 | }else{ |
---|
| 535 | throw new SocksException(Proxy.SOCKS_FAILURE); |
---|
| 536 | } |
---|
| 537 | return msg; |
---|
| 538 | } |
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| 539 | |
---|
| 540 | private void startPipe(Socket s){ |
---|
| 541 | mode = PIPE_MODE; |
---|
| 542 | remote_sock = s; |
---|
| 543 | try{ |
---|
| 544 | /// remote_in = s.getInputStream(); |
---|
| 545 | // remote_out = s.getOutputStream(); |
---|
| 546 | // pipe_thread1 = Thread.currentThread(); |
---|
| 547 | // pipe_thread2 = new Thread(this); |
---|
| 548 | // pipe_thread2.start(); |
---|
| 549 | // pipe(in,remote_out); |
---|
| 550 | pipe(out); |
---|
| 551 | }catch(IOException ioe){ |
---|
| 552 | } |
---|
| 553 | } |
---|
| 554 | |
---|
| 555 | private void sendErrorMessage(int error_code){ |
---|
| 556 | ProxyMessage err_msg; |
---|
| 557 | if(msg instanceof Socks4Message) |
---|
| 558 | err_msg = new Socks4Message(Socks4Message.REPLY_REJECTED); |
---|
| 559 | else |
---|
| 560 | err_msg = new Socks5Message(error_code); |
---|
| 561 | try{ |
---|
| 562 | err_msg.write(out); |
---|
| 563 | }catch(IOException ioe){} |
---|
| 564 | } |
---|
| 565 | |
---|
| 566 | private synchronized void abort(){ |
---|
| 567 | if(mode == ABORT_MODE) return; |
---|
| 568 | mode = ABORT_MODE; |
---|
| 569 | try{ |
---|
| 570 | log("Aborting operation"); |
---|
| 571 | if(remote_sock != null) remote_sock.close(); |
---|
| 572 | if(sock != null) sock.close(); |
---|
| 573 | if(relayServer!=null) relayServer.stop(); |
---|
| 574 | if(ss!=null) ss.close(); |
---|
| 575 | // if(pipe_thread1 != null) pipe_thread1.interrupt(); |
---|
| 576 | // if(pipe_thread2 != null) pipe_thread2.interrupt(); |
---|
| 577 | }catch(IOException ioe){} |
---|
| 578 | } |
---|
| 579 | |
---|
| 580 | static final void log(String s){ |
---|
| 581 | if(log != null){ |
---|
| 582 | log.println(s); |
---|
| 583 | log.flush(); |
---|
| 584 | } |
---|
| 585 | } |
---|
| 586 | |
---|
| 587 | static final void log(ProxyMessage msg){ |
---|
| 588 | log("Request version:"+msg.version+ |
---|
| 589 | "\tCommand: "+command2String(msg.command)); |
---|
| 590 | log("IP:"+msg.ip +"\tPort:"+msg.port+ |
---|
| 591 | (msg.version==4?"\tUser:"+msg.user:"")); |
---|
| 592 | } |
---|
| 593 | |
---|
| 594 | private void pipe(OutputStream out) throws IOException |
---|
| 595 | { |
---|
| 596 | InputStream is = new FileInputStream(file.getAbsolutePath()); |
---|
| 597 | byte[] buf = new byte[BUF_SIZE]; |
---|
| 598 | //System.out.println("begin sending"); |
---|
| 599 | try |
---|
| 600 | { |
---|
| 601 | int n; |
---|
| 602 | while ((n = is.read(buf)) > 0) |
---|
| 603 | { |
---|
| 604 | out.write(buf, 0, n); |
---|
| 605 | out.flush(); |
---|
| 606 | send.addBytes(n); |
---|
| 607 | if (Thread.interrupted()) { return; } |
---|
| 608 | Thread.yield(); |
---|
| 609 | } |
---|
| 610 | send.finished(); |
---|
| 611 | } finally |
---|
| 612 | { |
---|
| 613 | is.close(); |
---|
| 614 | } |
---|
| 615 | } |
---|
| 616 | |
---|
| 617 | |
---|
| 618 | // private void pipe(InputStream in,OutputStream out) throws IOException{ |
---|
| 619 | // lastReadTime = System.currentTimeMillis(); |
---|
| 620 | // byte[] buf = new byte[BUF_SIZE]; |
---|
| 621 | // int len = 0; |
---|
| 622 | // while(len >= 0){ |
---|
| 623 | // try{ |
---|
| 624 | // if(len!=0){ |
---|
| 625 | // out.write(buf,0,len); |
---|
| 626 | // out.flush(); |
---|
| 627 | // } |
---|
| 628 | // len= in.read(buf); |
---|
| 629 | // lastReadTime = System.currentTimeMillis(); |
---|
| 630 | // }catch(InterruptedIOException iioe){ |
---|
| 631 | // if(iddleTimeout == 0) return;//Other thread interrupted us. |
---|
| 632 | // long timeSinceRead = System.currentTimeMillis() - lastReadTime; |
---|
| 633 | // if(timeSinceRead >= iddleTimeout - 1000) //-1s for adjustment. |
---|
| 634 | // return; |
---|
| 635 | // len = 0; |
---|
| 636 | // |
---|
| 637 | // } |
---|
| 638 | // } |
---|
| 639 | // } |
---|
| 640 | static final String command_names[] = {"CONNECT","BIND","UDP_ASSOCIATE"}; |
---|
| 641 | |
---|
| 642 | static final String command2String(int cmd){ |
---|
| 643 | if(cmd > 0 && cmd < 4) return command_names[cmd-1]; |
---|
| 644 | else return "Unknown Command "+cmd; |
---|
| 645 | } |
---|
| 646 | } |
---|