X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Forg%2Fibex%2Fmail%2FMessage.java;h=73ab0f89e876684bfd915278828910c31f84894b;hb=866504299bfc44999e6cbb6c518a431d59908e65;hp=5ee6864f4b6683d7d891b32ce118331b9032d81c;hpb=6f0a19bdbf9b193dd465ec6624ef274d11cdfdf9;p=org.ibex.mail.git diff --git a/src/org/ibex/mail/Message.java b/src/org/ibex/mail/Message.java index 5ee6864..73ab0f8 100644 --- a/src/org/ibex/mail/Message.java +++ b/src/org/ibex/mail/Message.java @@ -1,229 +1,180 @@ +// 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; import org.ibex.crypto.*; -import org.ibex.js.*; 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.*; -// soft line limit (suggested): 78 chars / hard line limit: 998 chars -// folded headers: can insert CRLF anywhere that whitespace appears (before the whitespace) -// date/time parsing: see spec, 3.3 +// 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] -// FEATURE: MIME RFC2045, 2046, 2049 -// 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 +/** + * [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 class Message extends JSReflection { + // Parsed Headers ////////////////////////////////////////////////////////////////////////////// - private static class CaseInsensitiveHash extends Hashtable { - public Object get(Object o) { - if (o instanceof String) return super.get(((String)o).toLowerCase()); - return super.get(o); - } - public Object put(Object k, Object v) { - if (k instanceof String) return super.put(((String)k).toLowerCase(), v); - else return super.put(k, v); - } - } - - public int rfc822size() { return allHeaders.length() + 2 /* CRLF */ + body.length(); } // double check this - - public final String allHeaders; // pristine headers - public final Hashtable headers; // hash of headers (not including resent's and traces) - public final String body; // entire body - public final int lines; // lines in the body - - 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; - - public final Address envelopeFrom; - public final Address[] envelopeTo; - - public final Date arrival; // when the message first arrived at this machine; IMAP "internal date message attr" - - public void dump(OutputStream os) throws IOException { - Writer w = new OutputStreamWriter(os); - w.write(allHeaders); - w.write("X-IbexMail-EnvelopeFrom: " + envelopeFrom + "\r\n"); - w.write("X-IbexMail-EnvelopeTo: "); for(int i=0; i" : from.toString(true), + "Envelope-To", to.toString(true) + }); } /* - public static class Persistent { - public boolean deleted = false; - public boolean seen = false; - public boolean flagged = false; - public boolean draft = false; - public boolean answered = false; - public boolean recent = false; - public int uid = 0; + 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 static class StoredMessage extends Message { - public int uid; - public final int uid; - public final int uidValidity; // must be reset if mailbox is deleted and then recreated - public final int sequenceNumber; // starts at 1; numbers reshuffled upon EXPUNGE - public Hash keywords = new Hash(); - public boolean deleted = false; - public boolean seen = false; - public boolean flagged = false; - public boolean draft = false; - public boolean answered = false; - public boolean recent = false; // "Message is "recently" arrived in this mailbox. This - // session is the first session to have been notified - // about this message; - public StoredMessage(LineReader rs) throws IOException, MailException.Malformed { super(rs); } - } - */ - - public class Trace { - final String returnPath; - final Element[] elements; - public Trace(LineReader lr) throws Trace.Malformed, IOException { - String retPath = lr.readLine(); - if (!retPath.startsWith("Return-Path:")) throw new Trace.Malformed("trace did not start with Return-Path header"); - returnPath = retPath.substring(12).trim(); - Vec el = new Vec(); - while(true) { - String s = lr.readLine(); - if (s == null) break; - if (!s.startsWith("Received:")) { lr.pushback(s); break; } - s = s.substring(9).trim(); - el.addElement(new Element(s)); - } - elements = new Element[el.size()]; - el.copyInto(elements); - } - public class Element { - String fromDomain; - String fromIP; - String toDomain; - String forWhom; - Date date; - public Element(String fromDomain, String fromIP, String toDomain, String forWhom, Date date) { - this.fromDomain=fromDomain; this.fromIP=fromIP; this.toDomain=toDomain; this.forWhom=forWhom; this.date=date; } - public Element(String s) throws Trace.Malformed { - StringTokenizer st = new StringTokenizer(s); - if (!st.nextToken().equals("FROM")) throw new Trace.Malformed("trace did note have a FROM element: " + s); - fromDomain = st.nextToken(); - if (!st.nextToken().equals("BY")) throw new Trace.Malformed("trace did note have a BY element: " + s); - toDomain = st.nextToken(); - // FIXME not done yet - } - } - public class Malformed extends Message.Malformed { public Malformed(String s) { super(s); } } + 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 static class Malformed extends MailException.Malformed { public Malformed(String s) { super(s); } } - public Message(Address envelopeFrom, Address[] envelopeTo, LineReader rs) throws IOException, MailException.Malformed { - this.envelopeFrom = envelopeFrom; - this.envelopeTo = envelopeTo; - this.arrival = new Date(); - this.headers = new CaseInsensitiveHash(); - String key = null; - StringBuffer all = new StringBuffer(); - Date date = null; - Address to = null, from = null, replyto = null; - String subject = null, messageid = null; - Vec cc = new Vec(), bcc = new Vec(), resent = new Vec(), traces = new Vec(); - for(String s = rs.readLine(); s != null && !s.equals(""); s = rs.readLine()) { - all.append(s); - all.append("\r\n"); - if (s.length() == 0 || Character.isSpace(s.charAt(0))) { - if (key == null) throw new Malformed("Message began with a blank line; no headers"); - headers.put(key, headers.get(key) + s); - continue; - } - if (s.indexOf(':') == -1) throw new Malformed("Header line does not contain colon: " + s); - key = s.substring(0, s.indexOf(':')); - for(int i=0; i 126) - throw new Malformed("Header key \""+key+"\" contains invalid character \"" + key.charAt(i) + "\""); - String val = s.substring(s.indexOf(':') + 1).trim(); - while(Character.isSpace(val.charAt(0))) val = val.substring(1); - if (key.startsWith("Resent-")) { - if (key.startsWith("Resent-From")) resent.addElement(new Hashtable()); - ((Hashtable)resent.lastElement()).put(key.substring(7), val); - } else if (key.startsWith("Return-Path:")) { - rs.pushback(s); traces.addElement(new Trace(rs)); - } else { - // just append it to the previous one; valid for Comments/Keywords - if (headers.get(key) != null) 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? - this.date = (Date)headers.get("Date"); - this.to = new Address((String)headers.get("To")); // FIXME what if null? - this.from = headers.get("From") == null ? envelopeFrom : new Address((String)headers.get("From")); - this.replyto = headers.get("Reply-To") == null ? null : new Address((String)headers.get("Reply-To")); - this.subject = (String)headers.get("Subject"); - this.messageid = (String)headers.get("Message-Id"); - if (headers.get("Cc") != null) { - StringTokenizer st = new StringTokenizer((String)headers.get("Cc")); - this.cc = new Address[st.countTokens()]; - for(int i=0; i"; + Log.info(this, "synthesized messageid " + messageid); } - resent.copyInto(this.resent = new Hashtable[resent.size()]); - traces.copyInto(this.traces = new Trace[traces.size()]); - allHeaders = all.toString(); - StringBuffer body = new StringBuffer(); - int lines = 0; - for(String s = rs.readLine();; s = rs.readLine()) { if (s == null) break; lines++; body.append(s + "\r\n"); } - this.lines = lines; - 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(); } - public String summary() { - return - " Subject: " + subject + "\n" + - " EnvelopeFrom: " + envelopeFrom + "\n" + - " EnvelopeTo: " + envelopeTo + "\n" + - " MessageId: " + messageid; + // 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) { - // use null-sender for error messages (don't send errors to the null addr) - // FIXME - throw new RuntimeException("bounce not implemented"); + 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); } } } +