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1 package goodjava.mail;
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2
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3 import java.io.Reader;
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4 import java.io.InputStreamReader;
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5 import java.io.Writer;
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6 import java.io.OutputStreamWriter;
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7 import java.io.IOException;
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8 import java.net.Socket;
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9 import java.util.Map;
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10 import goodjava.util.GoodUtils;
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11
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12
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13 public class Smtp {
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14 private final char[] buf = new char[1000];
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15 private final Socket socket;
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16 private final Reader reader;
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17 private final Writer writer;
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18 public final String ehlo;
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19
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20 public Smtp(Socket socket) throws IOException, MailException {
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21 this.socket = socket;
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22 this.reader = new InputStreamReader(socket.getInputStream());
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23 this.writer = new OutputStreamWriter(socket.getOutputStream());
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24 String s = read();
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25 if( !s.startsWith("220") )
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26 throw new MailException(s);
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27 write( "EHLO\r\n" );
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28 ehlo = read();
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29 if( !ehlo.startsWith("250") )
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30 throw new MailException(ehlo);
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31 }
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32
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33 public String authenticate(String username,String password) throws IOException, MailException {
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34 String s = "\0" + username + "\0" + password;
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35 s = GoodUtils.base64Encode(s);
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36 write( "AUTH PLAIN " + s + "\r\n" );
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37 String r = read();
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38 if( !r.startsWith("235") )
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39 throw new MailException(r);
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40 return r;
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41 }
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42
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43 public void send(Message msg) throws IOException, MailException {
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44 for( Map.Entry<String,String> entry : msg.headers.entrySet() ) {
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45 String name = entry.getKey();
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46 String value = entry.getValue();
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47 if( name.equalsIgnoreCase("from") ) {
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48 from(value);
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49 }
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50 if( name.equalsIgnoreCase("to")
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51 || name.equalsIgnoreCase("cc")
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52 || name.equalsIgnoreCase("bcc")
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53 ) {
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54 for( String s : value.split(",") ) {
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55 to(s);
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56 }
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57 }
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58 }
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59 data( msg.toText() );
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60 }
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61
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62 public void close() throws IOException, MailException {
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63 write( "QUIT\r\n" );
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64 String s = read();
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65 if( !s.startsWith("221") )
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66 throw new MailException(s);
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67 socket.close();
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68 }
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69
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70 public String from(String address) throws IOException, MailException {
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71 write( "MAIL FROM: " + address + "\r\n" );
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72 String r = read();
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73 if( !r.startsWith("250") )
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74 throw new MailException(r);
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75 return r;
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76 }
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77
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78 public String to(String address) throws IOException, MailException {
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79 write( "RCPT TO: " + address + "\r\n" );
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80 String r = read();
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81 if( !r.startsWith("250") )
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82 throw new MailException(r);
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83 return r;
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84 }
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85
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86 public String data(String text) throws IOException, MailException {
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87 if( !text.endsWith("\r\n") )
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88 throw new MailException("text must end with \\r\\n");
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89 text = text.replace("\r\n.","\r\n..");
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90 write( "DATA\r\n" );
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91 String r = read();
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92 if( !r.startsWith("354") )
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93 throw new MailException(r);
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94 write( text + ".\r\n" );
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95 r = read();
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96 if( !r.startsWith("250") )
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97 throw new MailException(r);
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98 return r;
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99 }
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100
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101 private String read() throws IOException {
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102 int n = reader.read(buf);
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103 return new String(buf,0,n);
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104 }
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105
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106 private void write(String s) throws IOException {
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107 writer.write(s);
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108 writer.flush();
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109 }
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110 }
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