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.
6 import org.ibex.crypto.*;
7 import org.ibex.util.*;
8 import org.ibex.mail.protocol.*;
11 import org.ibex.io.Fountain;
16 // FIXME: this is important: folded headers: can insert CRLF anywhere that whitespace appears (before the whitespace)
17 // FIXME: messages must NEVER contain 8-bit binary data; this is a violation of IMAP
18 // FIXME: RFC822 1,000-char limit per line [soft line limit (suggested): 78 chars / hard line limit: 998 chars]
20 // FEATURE: PGP-signature-parsing
21 // FEATURE: mailing list header parsing
22 // FEATURE: delivery status notification (and the sneaky variety)
23 // FEATURE: threading as in http://www.jwz.org/doc/threading.html
26 * [immutable] This class encapsulates a message "floating in the
27 * ether": RFC2822 data but no storage-specific flags or other
30 public class Message extends MIME.Part {
32 // Parsed Headers //////////////////////////////////////////////////////////////////////////////
34 public final Address to;
35 public final Address from; // if multiple From entries, this is sender
36 public final Address envelopeFrom;
37 public final Address envelopeTo;
38 public final Date date;
39 public final Date arrival;
40 public final Address replyto; // if none provided, this is equal to sender
41 public final String subject;
42 public final String messageid;
43 public final Address[] cc;
44 public final Address[] bcc;
46 public static Message newMessage(Fountain in) throws Malformed { return new Message(in); }
49 public static Message newMessage(Fountain in, Address from, Address to) throws Malformed {
50 StringBuffer sb = new StringBuffer();
51 if (from != null) sb.append("Return-Path: " + from.toString(true) + "\r\n");
52 Stream stream = in.getStream();
54 String s = stream.readln();
55 if (s == null || s.length() == 0) {
56 if (to != null) sb.append("Envelope-To: " + to.toString(true) + "\r\n");
60 if (to != null && s.toLowerCase().startsWith("envelope-to:")) continue;
61 if (s.toLowerCase().startsWith("return-path:")) continue;
65 for(String s = stream.readln(); s != null; s = stream.readln()) {
69 return new Message(new Fountain.StringFountain(sb.toString()));
72 private Message(Fountain in) throws Malformed {
74 this.envelopeTo = headers.get("Envelope-To") != null ? Address.parse(headers.get("Envelope-To")) : null;
75 this.envelopeFrom = headers.get("Return-Path") != null ? Address.parse(headers.get("Return-Path")) : null;
76 this.to = headers.get("To") != null ? Address.parse(headers.get("To")) : this.envelopeTo;
77 this.from = headers.get("From") != null ? Address.parse(headers.get("From")) : this.envelopeFrom;
78 this.replyto = headers.get("Reply-To") == null ? null : Address.parse(headers.get("Reply-To"));
79 this.subject = headers.get("Subject");
80 this.messageid = headers.get("Message-Id");
81 this.cc = Address.list(headers.get("Cc"));
82 this.bcc = Address.list(headers.get("Bcc"));
83 this.date = parseDate(headers.get("Date")) == null ? new Date() : parseDate(headers.get("Date"));
84 this.arrival = this.date; // FIXME wrong; grab this from traces?
88 // Helpers /////////////////////////////////////////////////////////////////////////////
90 // http://www.jwz.org/doc/mid.html
91 private static final Random random = new Random();
92 public static String generateFreshMessageId() {
93 StringBuffer ret = new StringBuffer();
95 ret.append(Base36.encode(System.currentTimeMillis()));
97 ret.append(Base36.encode(random.nextLong()));
99 try { ret.append(InetAddress.getLocalHost().getHostName()); } catch (UnknownHostException e) { /* DELIBERATE */ }
101 return ret.toString();
104 public static Date parseDate(String s) {
105 // FIXME!!! this must be robust
106 // date/time parsing: see spec, 3.3
110 // this is belived to be compliant with QSBMF (http://cr.yp.to/proto/qsbmf.txt)
111 public Message bounce(String reason) {
112 if (envelopeFrom==null || envelopeFrom.toString().equals("")) return null;
114 Headers h = new Headers(headers.getStream());
115 h.put("Envelope-To", envelopeFrom.toString());
116 h.put("Return-Path", "<>");
117 h.put("From", "MAILER-DAEMON");
118 h.put("To", envelopeFrom.toString());
119 h.put("Subject", "failure notice");
122 "Hi. This is the Ibex Mail Server. I'm afraid I wasn't able to deliver\r\n"+
123 "your message to the following addresses. This is a permanent error;\r\n"+
124 "I've given up. Sorry it didn't work out\r\n."+
126 "<"+envelopeTo.toString()+">:\r\n"+
129 "--- Below this line is a copy of the message.\r\n"+
133 return newMessage(new Fountain.Concatenate(new Fountain.StringFountain(h.getString()+"\r\n"+error), getBody()));
134 } catch (Message.Malformed e) {
135 Log.error(this, "caught Message.Malformed in Message.bounce(); this should never happen");
141 public String toString() { throw new RuntimeException("Message.toString() called"); }
142 public String summary() { return "[" + envelopeFrom + " -> " + envelopeTo + "] " + subject; }
144 public static class Malformed extends MailException { public Malformed(String s) { super(s); } }