+// Copyright 2000-2005 the Contributors, as shown in the revision logs.
+// Licensed under the Apache Public Source License 2.0 ("the License").
+// You may not use this file except in compliance with the License.
+
package org.ibex.mail;
-// FIXME MIME: RFC2045, 2046, 2049
-// NOTE: always use Win32 line endings
-// hard line limit: 998 chars
-// soft line limit (suggested): 78 chars
-// header fields: ascii 33-126 (but no colon)
-// field body: anything ASCII except CRLF
-// folded headers: can insert CRLF anywhere that whitespace appears (before the whitespace)
-// body needs CRLF; one or the other alone is not acceptable
-// date/time parsing: see 3.3
-
-// FEATURE: PGP-signature-parsing
-// FEATURE: mailing list header parsing
-// FEATURE: delivery status notification (and the sneaky variety)
-// FEATURE: threading as in http://www.jwz.org/doc/threading.html
-public class Message {
-
- public final String allHeaders; // pristine headers
- public final Hashtable headers; // hash of headers (not including resent's and traces)
-
- // parsed header fields
- public final Date date;
- public final Address to;
- public final Address from; // if multiple From entries, this is sender
- public final Address replyto; // if none provided, this is equal to sender
- public final String subject;
- public final String messageid;
- public final Address[] cc;
- public final Address[] bcc;
- public final Hashtable[] resent;
- public final Trace[] traces;
-
- // envelope fields
- public final Address envelopeFrom;
- public final Address[] envelopeTo;
-
- public static class StoredMessage extends Message {
- public final int uid;
- public boolean deleted = false;
- public boolean read = false;
- public boolean answered = false;
- }
+import org.ibex.crypto.*;
+import org.ibex.util.*;
+import org.ibex.mail.protocol.*;
+import org.ibex.js.*;
+import org.ibex.io.*;
+import org.ibex.io.Fountain;
+import java.util.*;
+import java.net.*;
+import java.io.*;
- public static class Address {
- public final String user;
- public final String host;
- public final String description;
- public Address(String user, String host, String description) {
- this.user = user; this.host = host; this.description = description;
- }
- public Address(String s) {
- s = s.trim();
- String descrip = null;
- if (s.indexOf('<') != -1) {
- if (s.indexOf('>') == -1) { /* FIXME */ }
- descrip = s.substring(0, s.indexOf('<')) + s.substring(s.indexOf('>') + 1);
- s = s.substring(s.indexOf('<') + 1, s.indexOf('>'));
- }
- if (s.indexOf('@') == -1) { /* FIXME */ }
- description = descrip;
- user = s.substring(0, s.indexOf('@'));
- host = s.substring(s.indexOf('@')+1);
- }
- }
+// FEATURE: body constraints (how to enforce without reading stream, though?)
+// - messages must NEVER contain 8-bit binary data; this is a violation of IMAP
+// - RFC822 1,000-char limit per line [soft line limit (suggested): 78 chars / hard line limit: 998 chars]
- public class Trace {
- final String returnPath = null;
- final Element[] elements;
- public class Element {
- final String fromDomain;
- final String fromIP;
- final String toDomain;
- final String forWhom;
- final Date date;
- }
- }
+/**
+ * [immutable] This class encapsulates a message "floating in the
+ * ether": RFC2822 data but no storage-specific flags or other
+ * metadata.
+ */
+public class Message extends MIME.Part {
- public static class Base36 {
- public static String encode(long l) {
- StringBuffer ret = new StringBuffer();
- while (l > 0) {
- if ((l % 36) < 10) ret.append((char)(((int)'0') + (int)(l % 36)));
- else ret.append((char)(((int)'A') + (int)((l % 36) - 10)));
- l /= 36;
- }
- }
+ // Parsed Headers //////////////////////////////////////////////////////////////////////////////
+
+ public final Address to;
+ public final Address from; // if multiple From entries, this is sender
+ public final Address envelopeFrom;
+ public final Address envelopeTo;
+ public final Date date;
+ public final Date arrival;
+ public final Address replyto; // if none provided, this is equal to sender
+ public final String subject;
+ public final String messageid;
+ public final Address[] cc;
+ public final Address[] bcc;
+
+ public static Message newMessage(Fountain in) throws Malformed { return new Message(in, null); }
+ public static Message newMessageFromHeadersAndBody(Headers head, Fountain body, Address from, Address to) throws Malformed {
+ return new Message(Fountain.Util.concat(head, Fountain.Util.create("\r\n"), body),
+ new String[] {
+ "Return-Path", from==null ? "<>" : from.toString(true),
+ "Envelope-To", to.toString(true)
+ });
+ }
+ /*
+ public static Message newMessageWithEnvelope(Fountain in, Address from, Address to) throws Malformed {
+ return new Message(in,
+ new String[] {
+ "Return-Path", from==null ? "<>" : from.toString(true),
+ "Envelope-To", to.toString(true)
+ });
+ }
+ */
+ public Message withEnvelope(Address from, Address to) {
+ return new Message(this,
+ new String[] {
+ "Return-Path", from==null ? "<>" : from.toString(true),
+ "Envelope-To", to.toString(true)
+ });
}
+ private Message(Fountain in, String[] keyval) throws Malformed {
+ super(in, keyval);
- public Message(ReadStream rs) {
- String key = null;
- StringBuffer all = new StringBuffer();
- for(String s = rs.readLine(); s != null && !s.equals(""); s = rs.readLine()) {
- all.append(s);
- all.append("\r\n");
- if (Character.isSpace(s.charAt(0))) {
- if (lastKey == null) { /* FIXME */ }
- headers.put(lastKey, headers.get(lastKey) + s);
- continue;
- }
- if (s.indexOf(':') == -1) { /* FIXME */ }
-
- key = s.substring(0, s.indexOf(':'));
- String val = s.substring(0, s.indexOf(':') + 1);
- while(Character.isSpace(val.charAt(0))) val = val.substring(1);
-
- if (headers.get(key) != null)
- if (key.startsWith("Resent-")) {
- // FIXME: multi-resent headers
- } else if (key.startsWith("Return-Path:")) {
- // FIXME: parse traces, see RFC2821, section 4.4
- } else if (key.startsWith("Recieved:")) {
- // FIXME: parse traces, see RFC2821, section 4.4
- } else {
- // just append it to the previous one; valid for Comments/Keywords
- val = headers.get(key) + " " + val;
- }
-
- headers.put(key, val);
+ this.envelopeTo = headers.get("Envelope-To") != null ? Address.parse(headers.get("Envelope-To")) : null;
+ this.envelopeFrom = headers.get("Return-Path") != null ? Address.parse(headers.get("Return-Path")) : null;
+ this.to = headers.get("To") != null ? Address.parse(headers.get("To")) : this.envelopeTo;
+ this.from = headers.get("From") != null ? Address.parse(headers.get("From")) : this.envelopeFrom;
+ this.replyto = headers.get("Reply-To") == null ? null : Address.parse(headers.get("Reply-To"));
+ this.subject = headers.get("Subject");
+ String messageid = headers.get("Message-Id");
+ this.cc = Address.list(headers.get("Cc"));
+ this.bcc = Address.list(headers.get("Bcc"));
+ Date date = RobustDateParser.parseDate(headers.get("Date"));
+ this.date = date==null ? new Date() : date;
+ this.arrival = this.date; // FIXME wrong: should grab this from traces, I think?
+
+ if (messageid == null) {
+ SHA1 sha1 = new SHA1();
+ Stream s = this.getStream();
+ s.setInputDigest(sha1);
+ s.transcribe(new Stream(new NullOutputStream()));
+ byte[] end = new byte[sha1.getDigestSize()];
+ sha1.doFinal(end, 0);
+ messageid = "<synthetic.messageid." + Encode.toBase64String(end) + ">";
+ Log.info(this, "synthesized messageid " + messageid);
}
- pristeneHeaders = all.toString();
- StringBuffer body = new StringBuffer();
- for(String s = rs.readLine(); s != null && !s.equals(""); s = rs.readLine()) body.append(s);
- this.body = body.toString();
+ this.messageid = messageid;
}
+
+ // Helpers /////////////////////////////////////////////////////////////////////////////
+
// http://www.jwz.org/doc/mid.html
+ private static final Random random = new Random();
public static String generateFreshMessageId() {
+ return generateFreshMessageId(Base36.encode(System.currentTimeMillis())+'.'+
+ Base36.encode(random.nextLong()));
+ }
+ // FEATURE: sha1-based deterministic messageids? probably only useful for some virtual Mailbox impls though
+ public static String generateFreshMessageId(String seed) {
StringBuffer ret = new StringBuffer();
ret.append('<');
- ret.append(Base36.encode(System.currentTimeMillis()));
- ret.append('.');
- ret.append(Base36.encode(random.nextLong()));
- ret.append('.');
+ ret.append(seed);
+ ret.append('@');
try { ret.append(InetAddress.getLocalHost().getHostName()); } catch (UnknownHostException e) { /* DELIBERATE */ }
ret.append('>');
return ret.toString();
}
- private static final Random = new Random();
+ // FIXME: untested. Do we really want to duplicate all the old headers???
+ public Message reply(Fountain body, Address from, boolean includeReInSubject) throws Malformed {
+ return reply(new String[0], body, from, includeReInSubject);
+ }
+ public Message reply(String[] keyval, Fountain body, Address envelopeFrom, boolean includeReInSubject) throws Malformed {
+ Address to = null;
+ if (to==null) to = Address.parse(headers.get("reply-to"));
+ if (to==null) to = Address.parse(headers.get("from"));
+ if (to==null) to = this.envelopeFrom;
+ if (to==null) throw new Malformed("cannot reply to a message without a return address");
+ String references = headers.get("references");
+ String subject = this.subject;
+ if (includeReInSubject && subject!=null && !subject.toLowerCase().trim().startsWith("re:"))
+ subject = "Re: "+subject;
+ Headers h = new Headers(new Headers(new String[] {
+ "To", to.toString(true),
+ "Message-Id", generateFreshMessageId(),
+ "Date", new Date()+"" /*FIXME!!!*/,
+ "Subject", subject,
+ "In-Reply-To", messageid,
+ "References", messageid + (references==null?"":(" "+references))
+ }), keyval);
+ return newMessageFromHeadersAndBody(h, body, from, to);
+ }
+
+ // this is belived to be compliant with QSBMF (http://cr.yp.to/proto/qsbmf.txt)
+ public Message bounce(String reason) {
+ if (envelopeFrom==null || envelopeFrom.toString().equals("")) return null;
+
+ // FIXME: limit bounce body size
+ // FIXME: include headers from bounced message
+ Log.warn(Message.class, "bouncing message due to: " + reason);
+ Headers h = new Headers(headers, new String[] {
+ "Envelope-To", envelopeFrom.toString(),
+ "Return-Path", "<>",
+ "From", "MAILER-DAEMON <>",
+ "To", envelopeFrom.toString(),
+ "Subject", "failure notice"
+ });
+
+ String error =
+ "\r\n"+
+ "Hi. This is the Ibex Mail Server. I'm afraid I wasn't able to deliver\r\n"+
+ "your message to the following addresses. This is a permanent error;\r\n"+
+ "I've given up. Sorry it didn't work out\r\n."+
+ "\r\n"+
+ "<"+envelopeTo.toString()+">:\r\n"+
+ reason+"\r\n"+
+ "\r\n"+
+ "--- Below this line is a copy of the message.\r\n"+
+ "\r\n";
+
+ try {
+ return newMessage(Fountain.Util.concat(h, Fountain.Util.create(error), getBody()));
+ } catch (Message.Malformed e) {
+ Log.error(this, "caught Message.Malformed in Message.bounce(); this should never happen");
+ Log.error(this, e);
+ return null;
+ }
+ }
+
+ public String toString() { throw new RuntimeException("Message.toString() called"); }
+ public final String summary() { return "[" + envelopeFrom + " -> " + envelopeTo + "] " + subject; }
+
+ public static class Malformed extends MailException { public Malformed(String s) { super(s); } }
+
+ /** reads an SMTP-style dot-escaped message */
+ static Message readDotEncodedMessage(Stream conn) {
+ StringBuffer buf = new StringBuffer();
+ while(true) {
+ String s = conn.readln();
+ if (s == null) throw new RuntimeException("connection closed");
+ if (s.equals(".")) break;
+ if (s.startsWith(".")) s = s.substring(1);
+ buf.append(s);
+ buf.append("\r\n");
+ }
+ return Message.newMessage(new Fountain.StringFountain(buf.toString()));
+ }
}
+
projects / org.ibex.mail.git / blobdiff