X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Forg%2Fibex%2Fmail%2FMessage.java;h=b1c8e0a7877ed1b18d50a388a03ab8457de1ae2c;hb=0af90c1a1f14e24e1eb6790228be021b3e8e65b4;hp=96f08739547a11e5e0d21a1322f2cc98c7bc3101;hpb=9f0c3edcacb11544739b338c52afbc6efaaee5c0;p=org.ibex.mail.git diff --git a/src/org/ibex/mail/Message.java b/src/org/ibex/mail/Message.java index 96f0873..b1c8e0a 100644 --- a/src/org/ibex/mail/Message.java +++ b/src/org/ibex/mail/Message.java @@ -1,181 +1,194 @@ +// 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.*; -// 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 extends JSReflection { - - 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 - - // 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 void dump(OutputStream os) { - Log.error(this, "not implemented"); +// 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] + +/** + * [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 { + + // 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 class StoredMessage extends Message { - public StoredMessage(/*ReadStream rs*/SMTP.LineReader rs, boolean dotTerminatedLikeSMTP) throws IOException { - super(rs, dotTerminatedLikeSMTP); uid = -1; } - public final int uid; - public boolean deleted = false; - public boolean read = false; - public boolean answered = false; - public String dumpStoredForm() { throw new Error("StoredMessage.dumpStoredForm() not implemented"); }; - public static StoredMessage undump(InputStream os) { - Log.error(StoredMessage.class, "not implemented"); - return null; - } + /* + 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 Address extends JSReflection { - public String coerceToString() { return toString(); } - public String toString() { - if (description == null || description.equals("")) return user +"@"+ host; - return description + " " + "<" + user +"@"+ host + ">"; - } - 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); - } + */ + 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) + }); } - - public class Trace { - String returnPath = null; - Element[] elements; - public class Element { - // FIXME final - String fromDomain; - String fromIP; - String toDomain; - String forWhom; - Date date; + private Message(Fountain in, String[] keyval) throws Malformed { + super(in, keyval); + + 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 = ""; + Log.info(this, "synthesized messageid " + messageid); } + this.messageid = messageid; } - // FIXME: support dotTerminatedLikeSMTP - public Message(/*ReadStream rs*/SMTP.LineReader rs, boolean dotTerminatedLikeSMTP) throws IOException { - String key = null; - StringBuffer all = new StringBuffer(); - String lastKey = null; - replyto = null; - subject = null; - messageid = null; - cc = null; - bcc = null; - resent = null; - traces = null; - envelopeFrom = null; - envelopeTo = null; - - headers = new Hashtable(); - date = null; // FIXME - to = null; - from = null; - 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 */ - break; - } - - lastKey = 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); - } - allHeaders = all.toString(); - - StringBuffer body = new StringBuffer(); - for(String s = rs.readLine();; s = rs.readLine()) { - if (s == null || (dotTerminatedLikeSMTP && s.equals("."))) break; - body.append(s); - } - - this.body = body.toString(); - } + // 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 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())); + } } +