src/org/cacert/gigi/email/SendMail.java

   1 package org.cacert.gigi.email;
   2
   3 import java.io.BufferedReader;
   4 import java.io.IOException;
   5 import java.io.InputStreamReader;
   6 import java.io.OutputStreamWriter;
   7 import java.io.PrintWriter;
   8 import java.net.Socket;
   9 import java.security.GeneralSecurityException;
  10 import java.text.SimpleDateFormat;
  11 import java.util.Base64;
  12 import java.util.Date;
  13 import java.util.Locale;
  14 import java.util.Properties;
  15 import java.util.regex.Pattern;
  16
  17 import org.cacert.gigi.util.PEM;
  18 import org.cacert.gigi.util.ServerConstants;
  19
  20 public class SendMail extends EmailProvider {
  21
  22     private final String targetHost;
  23
  24     private final int targetPort;
  25
  26     protected SendMail(Properties props) {
  27         targetHost = props.getProperty("emailProvider.smtpHost", "localhost");
  28         targetPort = Integer.parseInt(props.getProperty("emailProvider.smtpPort", "25"));
  29     }
  30
  31     private static final Pattern NON_ASCII = Pattern.compile("[^a-zA-Z0-9 .-\\[\\]!_@]");
  32
  33     @Override
  34     public void sendMail(String to, String subject, String message, String replyto, String toname, String fromname, String errorsto, boolean extra) throws IOException {
  35         String from = "support@" + ServerConstants.getWwwHostName().replaceAll("^www.", "");
  36         try (Socket smtp = new Socket(targetHost, targetPort); PrintWriter out = new PrintWriter(new OutputStreamWriter(smtp.getOutputStream(), "UTF-8")); BufferedReader in = new BufferedReader(new InputStreamReader(smtp.getInputStream(), "UTF-8"));) {
  37             readSMTPResponse(in, 220);
  38             out.print("HELO www.cacert.org\r\n");
  39             out.flush();
  40             readSMTPResponse(in, 250);
  41             out.print("MAIL FROM: <" + from + ">\r\n");
  42             out.flush();
  43             readSMTPResponse(in, 250);
  44             String[] bits = to.split(",");
  45             for (String user : bits) {
  46                 out.print("RCPT TO:<" + user.trim() + ">\r\n");
  47                 out.flush();
  48                 readSMTPResponse(in, 250);
  49             }
  50             out.print("DATA\r\n");
  51             out.flush();
  52             readSMTPResponse(in, 250);
  53             out.print("X-Mailer: SomeCA.org Website\r\n");
  54             // if (array_key_exists("REMOTE_ADDR", $_SERVER)) {
  55             // out.print("X-OriginatingIP: ".$_SERVER["REMOTE_ADDR"]."\r\n");
  56             // }
  57             // TODO
  58             SimpleDateFormat emailDate = new SimpleDateFormat("E, d MMM yyyy HH:mm:ss ZZZZ (z)", Locale.ENGLISH);
  59             out.print("Date: " + emailDate.format(new Date(System.currentTimeMillis())) + "\r\n");
  60             if (errorsto != null) {
  61                 out.print("Sender: " + errorsto + "\r\n");
  62                 out.print("Errors-To: " + errorsto + "\r\n");
  63             }
  64             if (replyto != null) {
  65                 out.print("Reply-To: " + replyto + "\r\n");
  66             } else {
  67                 out.print("Reply-To: " + from + "\r\n");
  68             }
  69             out.print("From: " + from + "\r\n");
  70             out.print("To: " + to + "\r\n");
  71             if (NON_ASCII.matcher(subject).matches()) {
  72
  73                 out.print("Subject: =?utf-8?B?" + Base64.getEncoder().encodeToString(subject.getBytes("UTF-8")) + "?=\r\n");
  74             } else {
  75                 out.print("Subject: " + subject + "\r\n");
  76             }
  77             StringBuffer headers = new StringBuffer();
  78             headers.append("Content-Type: text/plain; charset=\"utf-8\"\r\n");
  79             headers.append("Content-Transfer-Encoding: base64\r\n");
  80             // out.print(chunk_split(base64_encode(recode("html..utf-8",
  81             // $message)))."\r\n.\r\n");
  82             headers.append("\r\n");
  83             headers.append(PEM.formatBase64(message.getBytes("UTF-8")));
  84             headers.append("\r\n");
  85
  86             try {
  87                 sendSigned(headers.toString(), out);
  88                 out.print("\r\n.\r\n");
  89                 out.flush();
  90             } catch (GeneralSecurityException e) {
  91                 e.printStackTrace();
  92                 return;
  93             }
  94             readSMTPResponse(in, 250);
  95             out.print("QUIT\n");
  96             out.flush();
  97             readSMTPResponse(in, 221);
  98         }
  99     }
 100
 101     public static boolean readSMTPResponse(BufferedReader in, int code) throws IOException {
 102         String line;
 103         while ((line = in.readLine()) != null) {
 104             if (line.startsWith(code + " ")) {
 105                 return true;
 106             } else if ( !line.startsWith(code + "-")) {
 107                 return false;
 108             }
 109         }
 110         return false;
 111
 112     }
 113
 114 }