Pileus Git - ~andy/spades/blob - src/Client.java

   1 package org.pileus.spades;
   2
   3 import java.io.*;
   4 import java.net.*;
   5
   6 public class Client
   7 {
   8         /* Constnats */
   9         enum State {
  10                 INIT,
  11                 SETUP,
  12                 READY,
  13                 ABORT,
  14         };
  15
  16         /* Preference data */
  17         public  String         server   = "irc.freenode.net";
  18         public  int            port     = 6667;
  19         public  int            timeout  = 240;
  20         public  String         nickname = "SpadeGuest";
  21         public  String         channel  = "#rhnoise";
  22         public  boolean        usesasl  = false;
  23         public  String         authname = "";
  24         public  String         password = "";
  25         public  String         username = "user";
  26         public  String         hostname = "localhost";
  27
  28         /* Public data */
  29         public  State          state    = State.INIT;
  30         public  String         name     = "";
  31
  32         /* Connection data */
  33         private boolean        pinging;
  34         private Socket         socket;
  35         private BufferedReader input;
  36         private PrintWriter    output;
  37
  38         /* Private data */
  39         private int            mangle;
  40
  41         /* Public Methods */
  42         public Client()
  43         {
  44                 Os.debug("Client: create");
  45         }
  46
  47         public void setServer(String server, int port)
  48         {
  49                 this.server = server;
  50                 this.port   = port;
  51         }
  52
  53         public void setAuth(boolean usesasl, String authname, String password)
  54         {
  55                 this.usesasl  = usesasl;
  56                 this.authname = authname;
  57                 this.password = password;
  58         }
  59
  60         public void setUser(String nickname, String channel)
  61         {
  62                 this.nickname = nickname;
  63                 this.channel  = channel;
  64                 this.name     = nickname;
  65         }
  66
  67         public boolean connect()
  68         {
  69                 Os.debug("Client: connect");
  70
  71                 try {
  72                         this.state  = State.SETUP;
  73                         this.socket = new Socket();
  74                         this.socket.setSoTimeout(this.timeout/2 * 1000);
  75                         this.socket.connect(new InetSocketAddress(this.server, this.port));
  76                         this.input  = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
  77                         this.output = new PrintWriter(this.socket.getOutputStream());
  78                 } catch (Exception e) {
  79                         Os.debug("Client: failed to create connection: " + e);
  80                         return false;
  81                 }
  82
  83                 Os.debug("Client: connected");
  84                 if (this.usesasl)
  85                         this.raw("CAP REQ :sasl");
  86                 this.raw("USER "+this.username+" "+this.hostname+" "+this.server+" :"+this.name);
  87                 this.raw("NICK "+this.name);
  88
  89                 return true;
  90         }
  91
  92         public void abort()
  93         {
  94                 Os.debug("Client: abort");
  95                 this.state = State.ABORT;
  96                 this.validate();
  97         }
  98
  99         public void reset()
 100         {
 101                 Os.debug("Client: reset");
 102                 this.state = State.INIT;
 103         }
 104
 105         public void raw(String line)
 106         {
 107                 try {
 108                         if (this.validate() != State.SETUP &&
 109                             this.validate() != State.READY)
 110                                 return;
 111                         Os.debug("< " + line);
 112                         this.output.println(line);
 113                         this.output.flush();
 114                 } catch (Exception e) {
 115                         Os.debug("Client: error writing line", e);
 116                 }
 117         }
 118
 119         public Message send(String txt)
 120         {
 121                 if (txt == null || txt.length() == 0)
 122                         return null;
 123                 if (this.validate() != State.READY)
 124                         return null;
 125                 Message msg = new Message(this.channel, this.name, txt);
 126                 if (msg.type == Message.Type.JOIN)
 127                         this.channel = msg.msg;
 128                 this.raw(msg.line);
 129                 return msg;
 130         }
 131
 132         public Message recv()
 133         {
 134                 while (true) try {
 135                         if (this.validate() != State.SETUP &&
 136                             this.validate() != State.READY)
 137                                 return null;
 138                         String line = this.input.readLine();
 139                         if (line == null)
 140                                 return null;
 141                         Os.debug("> " + line);
 142                         Message msg = new Message(line, this.name);
 143                         this.process(msg);
 144                         if (this.usesasl)
 145                                 this.dosasl(msg);
 146                         return msg;
 147                 }
 148                 catch (SocketTimeoutException e) {
 149                         if (this.pinging) {
 150                                 this.abort();
 151                                 return null;
 152                         } else {
 153                                 this.pinging = true;
 154                                 this.raw("PING :" + hostname);
 155                                 continue;
 156                         }
 157                 }
 158                 catch (SocketException e) {
 159                         this.state = State.INIT;
 160                         return null;
 161                 }
 162                 catch (Exception e) {
 163                         this.state = State.INIT;
 164                         Os.debug("Client: error in recv", e);
 165                         return null;
 166                 }
 167         }
 168
 169         /* Private methods */
 170         private State validate()
 171         {
 172                 try {
 173                         if (this.state == State.ABORT) {
 174                                 if (this.socket != null) {
 175                                         this.socket.close();
 176                                         this.state = State.INIT;
 177                                 }
 178                         }
 179                 } catch (Exception e) {
 180                         Os.debug("Client: error closing socket", e);
 181                 }
 182                 return this.state;
 183         }
 184
 185         private void process(Message msg)
 186         {
 187                 if (msg.cmd.equals("001") && msg.msg.matches("Welcome.*")) {
 188                         this.raw("JOIN "  + this.channel);
 189                         this.raw("TOPIC " + this.channel);
 190                         this.state = State.READY;
 191                 }
 192                 if (msg.cmd.equals("433")) {
 193                         this.name   = this.nickname + this.mangle;
 194                         this.mangle = this.mangle + 11;
 195                         this.raw("NICK "  + this.name);
 196                 }
 197                 if (msg.cmd.equals("PING")) {
 198                         this.raw("PONG " + msg.msg);
 199                 }
 200                 if (msg.cmd.equals("PONG")) {
 201                         this.pinging = false;
 202                 }
 203         }
 204
 205         private void dosasl(Message msg)
 206         {
 207                 switch (msg.type) {
 208                         case CAP:
 209                                 if (msg.msg.equals("sasl") && msg.arg.equals("ACK")) {
 210                                         Os.debug("Client: sasl - starting auth");
 211                                         this.raw("AUTHENTICATE PLAIN");
 212                                 } else {
 213                                         Os.debug("Client: sasl - Server does not support sasl");
 214                                 }
 215                                 break;
 216                         case AUTH:
 217                                 if (msg.arg.equals("+")) {
 218                                         Os.debug("Client: sasl - performin authentication");
 219                                         this.raw("AUTHENTICATE " + Os.base64(
 220                                                                 this.authname + "\0" +
 221                                                                 this.authname + "\0" +
 222                                                                 this.password));
 223                                 } else {
 224                                         Os.debug("Client: sasl - unexpected authenticate response");
 225                                 }
 226                                 break;
 227                         case AUTHOK:
 228                                 Os.debug("Client: SASL Auth Successful");
 229                                 this.raw("CAP END");
 230                                 break;
 231                         case AUTHFAIL:
 232                                 Os.debug("Client: SASL Auth Failed");
 233                                 this.raw("CAP END");
 234                                 break;
 235                 }
 236         }
 237 }