src/org/ibex/mail/MailingList.java

   1 // Copyright 2000-2005 the Contributors, as shown in the revision logs.
   2 // Licensed under the Apache Public Source License 2.0 ("the License").
   3 // You may not use this file except in compliance with the License.
   4
   5 package org.ibex.mail;
   6 import org.ibex.util.*;
   7 import org.ibex.io.*;
   8 import org.ibex.mail.target.*;
   9 import org.ibex.mail.protocol.*;
  10 import java.util.*;
  11 import java.io.*;
  12 import java.net.*;
  13 import javax.servlet.*;
  14 import javax.servlet.http.*;
  15
  16 public class MailingList implements Target, Iterable<MailingList.Subscriber> {
  17
  18     // DO NOT move this below the stuff underneath it
  19     private MailingList(File path) throws IOException {
  20         this.path = path;
  21         archive = FileBasedMailbox.getFileBasedMailbox(path.getCanonicalPath(), true);
  22         properties = new PropertiesFile(new File(path.getCanonicalPath() + File.separatorChar + "properties"));
  23         address = new Address(properties.get("address"));
  24         homepage = properties.get("homepage");
  25         one_line_description = properties.get("description");
  26         message_footer = properties.get("footer");
  27     }
  28
  29     public void banner(HttpServletRequest request, HttpServletResponse response) throws IOException {
  30         String basename = request.getRequestURL()+"";
  31         PrintWriter pw = new PrintWriter(response.getWriter());
  32         /*
  33         pw.println("<html>");
  34         pw.println("  <head>");
  35         pw.println("   <style>");
  36         pw.println("     TH, TD, P, LI, BODY {");
  37         pw.println("         font-family: helvetica, verdana, arial, sans-serif;");
  38         pw.println("         font-size: 12px;  ");
  39         pw.println("         text-decoration:none; ");
  40         pw.println("     }");
  41         pw.println("   </style>");
  42         pw.println("  </head>");
  43         pw.println("  <body>");
  44         */
  45         String confirm = request.getParameter("confirm");
  46         if (confirm != null) {
  47             Subscribe sub = (Subscribe)Confirmation.decode(confirm, secret, new Date());
  48             String email = sub.email;
  49             synchronized(this) {
  50                 String path = this.path.getAbsolutePath() + File.separatorChar + "subscribers" + File.separatorChar+sub.email;
  51                 if (sub.un) new File(path).delete();
  52                 else {
  53                     Log.warn(null, "creating " + path);
  54                     new FileOutputStream(path).close();
  55                 }
  56             }
  57             pw.println("    <b>successfully "+sub.adj+"d " + email + " to " + properties.get("address"));
  58         } else {
  59             String action = request.getParameter("action");
  60             String email = request.getParameter("email");
  61             if (action != null) {
  62                 Subscribe sub = new Subscribe(email, request.getRequestURL().toString(), action.equals("unsubscribe"));
  63                 sub.signAndSend(new Address(properties.get("owner")),
  64                                 secret, new Date());
  65                 pw.println("a confirmation email has been sent to " + email +
  66                            "; click the enclosed link to confirm your request to " + action);
  67             } else {
  68                 pw.println("<table width=100% border=0 cellpadding=0 cellspacing=0><tr><td>");
  69                 pw.println("    <b>"+properties.get("address")+"</b><br> ");
  70                 pw.println("    <i>"+properties.get("description")+"</i> ");
  71                 pw.println("</td><td align=right>");
  72                 pw.println("<i>access via:</i> ");
  73                 if (path.getAbsolutePath().startsWith("/afs/"))
  74                     pw.println("<a target=_top href='file:" + path.getAbsolutePath() +"'>[AFS]</a> ");
  75                 pw.println("<a target=_top href="+properties.get("nntp")+">[NNTP]</a></tt>");
  76                 pw.println("<a target=_top href='mailto:"+properties.get("address")+"'>[SMTP]</a></tt>");
  77                 pw.println("<a target=_top href='"+request.getRequestURL()+"'>[HTTP]</a></tt>");
  78                 pw.println("</td></tr><tr><td colspan=2 align=right>");
  79                 pw.println("    <form action='"+basename+"' method=post name=form1 target=_top>");
  80                 pw.println("       <input type=text width=100 value='your@email.com' name=email>");
  81                 pw.println("       <input type=hidden name=frame value=banner>");
  82                 pw.println("       <select name=action onchange='form1.submit()'>");
  83                 pw.println("          <option>--choose action--</option>");
  84                 pw.println("          <option>subscribe</option>");
  85                 pw.println("          <option>unsubscribe</option>");
  86                 pw.println("          <option>preferences</option>");
  87                 pw.println("       </select>");
  88                 pw.println("    </form>");
  89                 pw.println("</td></tr></table>");
  90             }
  91         }
  92         //pw.println("  </body>");
  93         //pw.println("</html>");
  94         pw.flush();
  95     }
  96
  97     public class Subscribe extends Confirmation {
  98         public String email;
  99         public String basename;
 100         public boolean un;
 101         public String adj;
 102         public Subscribe(String email, String basename, boolean un) {
 103             super(new Address(email), new Date().getTime() + (1000 * 60 * 60 * 24));
 104             this.email = email;
 105             this.basename = basename;
 106             this.un = un;
 107             this.adj = un ? "unsubscribe" : "subscribe";
 108         }
 109         public String getDescription() { return adj + " " + email + " to " + properties.get("address"); }
 110         public String getURL(String tail) { return basename + "?frame=banner&confirm="+URLEncoder.encode(tail); }
 111     }
 112
 113     private final File             path;
 114     private final FileBasedMailbox archive;
 115     private final PropertiesFile   properties;
 116
 117     private final long             secret               = new Random().nextLong();
 118     public  final Address          address;
 119     public        String           homepage;
 120
 121     public        String           one_line_description;
 122     public        String           message_footer;
 123
 124     public        int              bounceThreshhold     = 10;
 125
 126     public static class Subscriber {
 127         public Subscriber(Address a) { this.address = a; }
 128         public  Address          address;
 129     }
 130
 131
 132     // Pooling //////////////////////////////////////////////////////////////////////////////
 133
 134
 135     public Iterator<Subscriber> iterator() {
 136         final File subdir = new File(path.getAbsolutePath() + File.separatorChar + "subscribers");
 137         if (!subdir.exists()) subdir.mkdirs();
 138         final String[] subs = !subdir.isDirectory() ? new String[0] : subdir.list();
 139         return new Iterator<Subscriber>() {
 140             int i=0;
 141             Subscriber prep = null;
 142             public void remove() {
 143                 try {
 144                     new File(subdir.getAbsolutePath() + File.separatorChar + subs[i++]).delete();
 145                 } catch (Exception e) {
 146                     Log.error(MailingList.class, e);
 147                 }
 148             }
 149             public boolean hasNext() { if (prep==null) prep = next(); return prep!=null; }
 150             public Subscriber next() {
 151                 if (prep!=null) { Subscriber ret = prep; prep = null; return ret; }
 152                 while(i<subs.length) {
 153                     if (subs[i].indexOf('@')==-1) i++;
 154                     else try {
 155                         return new Subscriber(new Address(subs[i++]));
 156                     } catch (Exception e) {
 157                         Log.warn(MailingList.class, e);
 158                         continue;
 159                     }
 160                 }
 161                 return null;
 162             }
 163         };
 164     }
 165
 166     private static HashMap<String,MailingList> cache = new HashMap<String,MailingList>();
 167     public static MailingList getMailingList(String path) throws IOException { return getMailingList(new File(path)); }
 168     public static MailingList getMailingList(File path) throws IOException {
 169         if (!path.exists()) path.mkdirs();
 170         MailingList ret = cache.get(path.getCanonicalPath());
 171         if (ret==null) cache.put(path.getCanonicalPath(), ret = new MailingList(path));
 172         return ret;
 173     }
 174
 175     // Methods //////////////////////////////////////////////////////////////////////////////
 176
 177     public Mailbox getArchive() throws IOException { return archive; }
 178
 179     public void accept(Message m) throws IOException, MailException {
 180         StringBuffer buf = new StringBuffer();
 181         m.getBody().getStream().transcribe(buf);
 182         Headers head = new Headers.Original(m.headers.getStream());
 183         head = head.set("List-Id", one_line_description + "<"+address+">");
 184         head = head.set("Subject", properties.get("prefix") + " " + head.get("Subject"));
 185
 186         m = Message.newMessage(new Fountain.StringFountain(head.getString()+"\r\n"+buf.toString()));
 187         Log.warn(MailingList.class, "archiving list message " + m.subject);
 188         getArchive().accept(m);
 189
 190         for(Subscriber s : this) try {
 191             Log.warn(MailingList.class, "  trying " + s.address);
 192             SMTP.accept(Message.newMessage(m, m.envelopeFrom, s.address));
 193             Log.warn("[list]", "successfully sent to " + s);
 194         } catch (Exception e2) { Log.error("[list]", e2); }
 195     }
 196
 197     //public Filter[]     filters  = new Filter[0];
 198     //public static class Filter {
 199     //    public class EmergencyModerationFilter { }
 200     //    public class MaximumLengthFilter { }
 201     //    public class SpamFilter { }
 202     //    public class MIMETypes { }
 203     //    public class MungeReplyTo { }
 204     //    public class AnonymizeSender { public boolean uncorrelated; }
 205     //}
 206 }
 207
 208     //public static enum UserType         { Administrator, Moderator, Member }
 209     //public static enum SubscriptionType { All, None, Digest, MimeDigest }
 210     //public static enum Visibility       { Members, Public, Nobody }
 211     //public static enum Action           { Accept, Hold, Reject }
 212     //public        Visibility       listVisibility       = Visibility.Nobody;
 213     //public        Visibility       membershipVisibility = Visibility.Nobody;
 214     //public        Visibility       archiveVisibility    = Visibility.Members;
 215     //public        Action           defaultPostingType   = Action.Hold;
 216
 217         //public  Action           posting = Action.Accept;
 218         //public  UserType         type = UserType.Member;
 219         //public  SubscriptionType subscription = SubscriptionType.All;
 220         //public  boolean          send_copy_of_own_post = false;
 221         //public  boolean          filter_duplicates_when_ccd = true;