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.
5 package org.ibex.mail.protocol;
7 import org.ibex.crypto.*;
8 import org.ibex.jinetd.Listener;
9 import org.ibex.jinetd.Worker;
10 import org.ibex.mail.*;
11 import org.ibex.util.*;
12 import org.ibex.mail.target.*;
18 // FIXME: this is valid LSUB "" asdfdas%*%*%*%*SFEFGWEF
19 // FIXME: be very careful about where/when we quotify stuff
20 // FIXME: 'UID FOO 100:*' must match at least one message even if all UIDs less than 100
21 // FIXME: LIST should return INBOX if applicable
25 // RFC 3501: IMAPv4 with clarifications
29 // FEATURE: make sure we're being case-insensitive enough; probably want to upcase atom()
30 // FEATURE: MIME-queries and BODYSTRUCTURE
31 // FEATURE: READ-WRITE / READ-ONLY status on SELECT
32 // FEATURE: pipelining
33 // FEATURE: support [charset]
35 // FEATURE: subscriptions
36 // FEATURE: tune for efficiency
38 // FEATURE: asynchronous client notifications (need to re-read RFC)
43 public static final float version = (float)0.2;
46 public static String getBodyString(Message m) {
47 StringBuffer sb = new StringBuffer();
48 m.getStream().transcribe(sb);
52 // API Class //////////////////////////////////////////////////////////////////////////////
54 public static interface Client {
55 public void expunge(int uid);
56 public void list(char separator, String mailbox, boolean lsub, boolean phantom);
57 public void fetch(int num, int flags, int size, Message m, int muid); // m may be null or incomplete
60 public static interface Server {
61 public void setClient(IMAP.Client client);
62 public String[] capability();
63 public Hashtable id(Hashtable clientId);
64 public void copy(Query q, String to);
66 public void unselect();
67 public void delete(String m);
68 public void create(String m);
69 public void append(String m, int flags, Date arrival, String body);
73 public void subscribe(String mailbox);
74 public void unsubscribe(String mailbox);
75 public int unseen(String mailbox);
76 public int recent(String mailbox);
77 public int count(String mailbox);
80 public int uidNext(String mailbox);
81 public int uidValidity(String mailbox);
82 public int[] search(Query q, boolean uid);
83 public void rename(String from, String to);
84 public void select(String mailbox, boolean examineOnly);
85 public void setFlags(Query q, int flags, boolean uid, boolean silent);
86 public void removeFlags(Query q, int flags, boolean uid, boolean silent);
87 public void addFlags(Query q, int flags, boolean uid, boolean silent);
88 public void expunge();
89 public void fetch(Query q, int spec, String[] headers, int start, int end, boolean uid);
90 public void lsub(String start, String ref);
91 public void list(String start, String ref);
92 public static class Exn extends MailException { public Exn(String s) { super(s); } }
93 public static class Bad extends Exn { public Bad(String s) { super(s); } }
94 public static class No extends Exn { public No(String s) { super(s); } }
98 // MailboxWrapper //////////////////////////////////////////////////////////////////////////////
100 /** wraps an IMAP.Server interface around a Mailbox */
101 public static class MailboxWrapper implements Server {
103 public static final char sep = '.';
105 Mailbox inbox = null;
106 Mailbox selected = null;
108 Mailbox selected() { if (selected == null) throw new Bad("no mailbox selected"); return selected; }
112 public MailboxWrapper(Login auth, Client c) { this.auth=auth; this.client=c;}
113 public void setClient(IMAP.Client client) { }
115 private Mailbox mailbox(String name, boolean create) { return mailbox(name, create, true); }
116 private Mailbox mailbox(String name, boolean create, boolean throwexn) {
117 if (name.equalsIgnoreCase("inbox")) return inbox;
119 for(StringTokenizer st = new StringTokenizer(name, sep + ""); st.hasMoreTokens();)
120 if ((m = m.slash(st.nextToken(), create)) == null) {
121 if (throwexn) throw new Server.No("no such mailbox " + name);
127 // FEATURE: not accurate when a wildcard and subsequent non-wildcards both match a single component
128 public void lsub(String start, String ref) { list(start, ref, true); }
129 public void list(String start, String ref) { list(start, ref, false); }
130 public void list(String start, String ref, boolean lsub) {
131 if (ref.length() == 0) { client.list(sep, start, lsub, false); return; }
132 while (start.endsWith(""+sep)) start = start.substring(0, start.length() - 1);
133 if (ref.endsWith("%")) ref = ref + sep;
134 String[] children = (start.length() == 0 ? root : mailbox(start, false)).children();
135 for(int i=0; i<children.length; i++) {
136 String s = children[i], pre = ref, kid = start + (start.length() > 0 ? sep+"" : "") + s;
137 if (mailbox(kid, false) == null) continue;
138 boolean phantom = mailbox(kid, false).phantom();
140 if (pre.length() == 0) {
141 if (s.length() == 0) client.list(sep, kid, lsub, phantom);
142 } else switch(pre.charAt(0)) {
143 case sep: if (s.length() == 0) list(kid, pre.substring(1), lsub); break;
144 case '%': client.list(sep,kid,lsub,phantom);pre=pre.substring(1); s = ""; continue;
145 case '*': client.list(sep,kid,lsub,phantom);list(kid,pre,lsub);pre=pre.substring(1); break;
146 default: if (s.length()==0) break;
147 if (s.charAt(0) != pre.charAt(0)) break;
148 s = s.substring(1); pre = pre.substring(1); continue;
155 public String[] capability() { return new String[] { "IMAP4rev1" , "UNSELECT", "ID" }; }
156 public Hashtable id(Hashtable clientId) {
157 Hashtable response = new Hashtable();
158 response.put("name", IMAP.class.getName());
159 response.put("version", version + "");
160 response.put("os", System.getProperty("os.name", null));
161 response.put("os-version", System.getProperty("os.version", null));
162 response.put("vendor", "none");
163 response.put("support-url", "http://mail.ibex.org/");
167 public void copy(Query q, String to) { copy(q, mailbox(to, false)); }
168 /* */ void copy(Query q, Mailbox to) {
169 for(Mailbox.Iterator it=selected().iterator(q);it.next();) to.add(it.cur(), it.flags() | Mailbox.Flag.RECENT); }
171 public void unselect() { selected = null; }
172 public void delete(String m0) { delete(mailbox(m0,false)); }
173 public void delete(Mailbox m) { if (!m.equals(inbox)) m.destroy(false); else throw new Bad("can't delete inbox"); }
174 public void create(String m) { mailbox(m, true, false); }
175 public void append(String m,int f,Date a,String b) { try {
176 mailbox(m,false).add(Message.newMessage(new Fountain.StringFountain(b)),f|Mailbox.Flag.RECENT);
177 } catch (Message.Malformed e) { throw new No(e.getMessage()); } }
178 public void check() { }
179 public void noop() { }
180 public void logout() { }
181 public void close() { for(Mailbox.Iterator it=selected().iterator(Query.deleted()); it.next();) it.delete(); }
182 public void expunge() { for(Mailbox.Iterator it = selected().iterator(Query.deleted());it.next();) expunge(it); }
183 public void expunge(Mailbox.Iterator it) { client.expunge(it.uid()); it.delete(); }
184 public void subscribe(String mailbox) { }
185 public void unsubscribe(String mailbox) { }
186 public int maxuid() {
188 Mailbox mb = selected();
189 if (mb == null) return 0;
190 for(Mailbox.Iterator it = mb.iterator(); it.next(); ) ret = it.uid();
193 public int unseen(String mailbox) { return mailbox(mailbox, false).count(Query.not(Query.seen())); }
194 public int recent(String mailbox) { return mailbox(mailbox, false).count(Query.recent()); }
195 public int count(String mailbox) { return mailbox(mailbox, false).count(Query.all()); }
196 public int count() { return selected().count(Query.all()); }
197 public int uidNext(String mailbox) { return mailbox(mailbox, false).uidNext(); }
198 public int uidValidity(String mailbox) { return mailbox(mailbox, false).uidValidity(); }
199 public void select(String mailbox, boolean examineOnly) {
200 selected = mailbox(mailbox, false);
203 public int[] search(Query q, boolean uid) {
204 Vec.Int vec = new Vec.Int();
205 for(Mailbox.Iterator it = selected().iterator(q); it.next();) {
206 vec.addElement(uid ? it.uid() : it.num());
212 public void setFlags(Query q, int f, boolean uid, boolean silent) { doFlags(q, f, uid, 0, silent); }
213 public void addFlags(Query q, int f, boolean uid, boolean silent) { doFlags(q, f, uid, 1, silent); }
214 public void removeFlags(Query q, int f, boolean uid, boolean silent) { doFlags(q, f, uid, -1, silent); }
216 private void doFlags(Query q, int flags, boolean uid, int style, boolean silent) {
217 for(Mailbox.Iterator it = selected().iterator(q);it.next();) {
218 boolean recent = it.recent();
219 try { throw new Exception("flags " + flags); } catch (Exception e) { Log.error(this, e); }
220 if (style == -1) it.removeFlags(flags);
221 else if (style == 0) it.setFlags(flags);
222 else if (style == 1) it.addFlags(flags);
224 if (!silent) client.fetch(it.num(), it.flags(), -1, null, it.uid());
227 public void rename(String from0, String to) {
228 Mailbox from = mailbox(from0, false);
229 if (from.equals(inbox)) { from.copy(Query.all(), mailbox(to, true)); }
230 else if (to.equalsIgnoreCase("inbox")) { from.copy(Query.all(), mailbox(to, true)); from.destroy(false); }
231 else from.rename(to);
233 public void fetch(Query q, int spec, String[] headers, int start, int end, boolean uid) {
234 for(Mailbox.Iterator it = selected().iterator(q); it.next(); ) {
235 Message message = ((spec & (BODYSTRUCTURE | ENVELOPE | INTERNALDATE | FIELDS | FIELDSNOT | RFC822 |
236 RFC822TEXT | RFC822SIZE | HEADERNOT | HEADER)) != 0) ? it.cur() : null;
237 int size = message == null ? 0 : message.getLength();
238 client.fetch(it.num(), it.flags(), size, message, it.uid());
245 // Single Session Handler //////////////////////////////////////////////////////////////////////////////
247 /** takes an IMAP.Server and exposes it to the world as an IMAP server on a TCP socket */
248 public static class Listener implements Worker, Client {
249 String selectedName = null;
250 Mailbox inbox = null, root = null;
252 Parser parser = null;
253 Connection conn = null;
255 public Listener(Login auth) { api = new IMAP.MailboxWrapper(this.auth = auth, this); }
256 Parser.Token token() { return parser.token(); }
257 void println(String s) { conn.println(s); }
258 void newline() { parser.newline(); }
259 Query query(int max) { return parser.query(max, maxn(true)); }
261 public void login(String u, String p) {
263 if ((ret = auth.login(u,p,IMAP.class)) == null) throw new Server.No("Login failed.");
264 if (ret instanceof IMAP.Server) {
265 api = (IMAP.Server)ret;
268 Account account = (Account)ret;
269 ((MailboxWrapper)api).root = root = account.getMailbox(IMAP.class);
270 Log.warn(this, "logged in, root="+root);
271 ((MailboxWrapper)api).inbox = inbox = root.slash("INBOX", false);
272 if (inbox == null) ((MailboxWrapper)api).inbox = inbox = root;
276 private int maxn(boolean uid) { return uid ? api.maxuid() : api.count(); }
278 public void handleRequest(Connection conn) {
280 parser = new Parser(conn);
281 conn.setTimeout(30 * 60 * 1000);
282 println("* OK " + conn.vhost + " " + IMAP.class.getName() + " IMAP4rev1 [RFC3501] v" + version + " server ready");
283 for(String tag = null;; newline()) try {
286 tag = null; Parser.Token tok = token(); if (tok == null) return; tag = tok.astring();
287 String command = token().atom();
288 if (command.equalsIgnoreCase("UID")) { uid = true; command = token().atom(); }
289 int commandKey = ((Integer)commands.get(command.toUpperCase())).intValue();
291 case LOGIN: login(token().astring(), token().astring()); break;
292 case CAPABILITY: println("* CAPABILITY " + Printer.join(" ", api.capability())); break;
293 case AUTHENTICATE: throw new Server.No("AUTHENTICATE not supported");
294 case LOGOUT: api.logout(); println("* BYE"); conn.close(); return;
295 case LIST: api.list(token().q(), token().astring()); break; /*astring is a hack for EUDORA*/
296 case LSUB: api.lsub(token().q(), token().q()); break;
297 case SUBSCRIBE: api.subscribe(token().astring()); break;
298 case UNSUBSCRIBE: api.unsubscribe(token().astring()); break;
299 case RENAME: api.rename(token().astring(), token().astring()); break;
300 case COPY: selected(); api.copy(Query.set(uid, token().set(maxn(uid))), token().astring()); break;
301 case DELETE: api.delete(token().atom()); break;
302 case CHECK: selected(); api.check(); break;
303 case NOOP: api.noop(); break;
304 case CLOSE: selected(); api.close(); break;
305 case EXPUNGE: selected(); api.expunge(); break;
306 case UNSELECT: selected(); api.unselect(); selected = false; break;
307 case CREATE: api.create(token().astring()); break;
308 case FETCH: selected(); fetch(Query.set(lastuid=uid, token().set(maxn(uid))),
309 lastfetch=token().lx(), 0, 0, 0, uid, 0); break;
312 int[] result = api.search(query(maxn(uid)), uid);
313 /*if (result.length > 0)*/ println("* SEARCH " + Printer.join(result));
318 String mailbox = token().astring();
319 api.select(mailbox, commandKey==EXAMINE);
320 println("* FLAGS (\\Answered \\Flagged \\Deleted \\Seen \\Draft)");
321 println("* " + api.count(mailbox) + " EXISTS");
322 println("* " + api.recent(mailbox) + " RECENT");
323 println("* OK [UNSEEN " + api.unseen(mailbox) + "]");
324 println("* OK [UIDVALIDITY " + api.uidValidity(mailbox) + "] UIDs valid");
325 println("* OK [UIDNEXT " + api.uidNext(mailbox) + "]");
326 println("* OK [PERMANENTFLAGS (\\Seen)]");
330 String mailbox = token().astring(); // hack for GNUS buggy client
331 Parser.Token[] list = token().l();
332 String response = "";
333 for(int i=0; i<list.length; i++) {
334 String s = list[i].atom().toUpperCase();
335 if (i>0) response += " ";
336 if (s.equals("MESSAGES")) response += "MESSAGES " + api.count(mailbox);
337 if (s.equals("RECENT")) response += "RECENT " + api.recent(mailbox);
338 if (s.equals("UIDNEXT")) response += "UIDNEXT " + api.uidNext(mailbox);
339 if (s.equals("UIDVALIDITY")) response += "UIDVALIDITY " + api.uidValidity(mailbox);
340 if (s.equals("UNSEEN")) response += "UNSEEN " + api.unseen(mailbox);
342 println("* STATUS " + mailbox + " (" + response + ")");
346 String m = token().astring();
348 Date arrival = new Date();
349 Parser.Token t = token();
350 if (t.type == t.LIST) { flags = t.flags(); t = token(); }
351 if (t.type != t.QUOTED) { arrival = t.datetime(); t = token(); }
352 api.append(m, flags, arrival, t.q());
356 Query q = uid ? Query.uid(token().set(maxn(uid))) : Query.num(token().set(maxn(uid)));
357 String s = token().atom().toUpperCase();
358 int flags = token().flags();
359 if (s.equals("FLAGS")) api.setFlags(q, flags, uid, false);
360 else if (s.equals("+FLAGS")) api.addFlags(q, flags, uid, false);
361 else if (s.equals("-FLAGS")) api.removeFlags(q, flags, uid, false);
362 else if (s.equals("FLAGS.SILENT")) api.setFlags(q, flags, uid, true);
363 else if (s.equals("+FLAGS.SILENT")) api.addFlags(q, flags, uid, true);
364 else if (s.equals("-FLAGS.SILENT")) api.removeFlags(q, flags, uid, true);
365 else throw new Server.Bad("unknown STORE specifier " + s);
367 default: throw new Server.Bad("unrecognized command \"" + command + "\"");
369 println(tag+" OK "+command+" Completed. " +
370 (commandKey == LOGIN ? ("[CAPABILITY "+Printer.join(" ", api.capability())+"]") : ""));
371 Log.error("[imap]", conn.dumpLog());
372 } catch (Server.Bad b) { println(tag==null ? "* BAD Invalid tag":(tag + " Bad " + b.toString()));
373 } catch (Server.No n) { println(tag==null?"* BAD Invalid tag":(tag+" No " + n.toString())); }
376 private Parser.Token[] lastfetch = null; // hack
377 private boolean lastuid = false; // hack
378 private boolean selected = false;
379 private void selected() { if (!selected) throw new Server.Bad("no mailbox selected"); }
381 // Callbacks //////////////////////////////////////////////////////////////////////////////
383 public void expunge(int uid) { println("* " + uid + " EXPUNGE"); }
384 public void fetch(int n, int f, int size, Message m, int muid) { fetch(m, lastfetch, n, f, size, lastuid, muid); }
385 public void list(char sep, String mb, boolean sub, boolean p) {
386 println("* " + (sub?"LSUB":"LIST")+" ("+(p?"\\Noselect":"")+") \""+sep+"\" \""+mb+"\"");}
389 * Parse a fetch request <i>or</i> emit a fetch reply.
391 * To avoid duplicating tedious parsing logic, this function
392 * performs both of the following tasks:
393 * - parse the fetch request in Token[] t and return a fetch spec
394 * - emit a fetch reply for the parsed spec with respect to message m
396 private void fetch(Object o, Parser.Token[] t, int num, int flags, int size, boolean uid, int muid) {
397 Query q = o == null ? null : o instanceof Query ? (Query)o : null;
398 Message m = o == null ? null : o instanceof Message ? (Message)o : null;
399 boolean e = q == null;
401 // asynchronous flags update
403 println("* " + num + " FETCH (FLAGS " + Printer.flags(flags) + (uid?(" UID "+muid):"") + ")");
408 int spec = 0; // spec; see constants for flags
409 String[] headers = null;
410 int start = -1, end = -1;
411 StringBuffer r = new StringBuffer();
412 if (e) { r.append(num); r.append(" FETCH ("); }
413 int initlen = r.length();
415 boolean good = false;
416 for(int i=0; i<t.length; i++)
417 if ((t[i].type == Parser.Token.QUOTED || t[i].type == Parser.Token.ATOM) &&
418 t[i].astring().equalsIgnoreCase("UID")) good = true;
420 Parser.Token[] t2 = new Parser.Token[t.length + 1];
421 System.arraycopy(t, 0, t2, 0, t.length);
422 t2[t2.length - 1] = parser.token("UID");
423 lastfetch = (t = t2);
426 if (t.length == 0 && (t[0].type == Parser.Token.QUOTED || t[0].type == Parser.Token.ATOM)) {
427 if (t[0].astring().equalsIgnoreCase("ALL"))
428 t = new Parser.Token[] { parser.token("FLAGS"), parser.token("INTERNALDATE"),
429 parser.token("ENVELOPE"), parser.token("RFC822.SIZE") };
430 else if (t[0].astring().equalsIgnoreCase("FULL"))
431 t = new Parser.Token[] { parser.token("FLAGS"), parser.token("INTERNALDATE"), parser.token("BODY"),
432 parser.token("ENVELOPE"), parser.token("RFC822.SIZE") };
433 else if (t[0].astring().equalsIgnoreCase("FAST"))
434 t = new Parser.Token[] { parser.token("FLAGS"), parser.token("INTERNALDATE"),
435 parser.token("RFC822.SIZE") };
437 for(int i=0; i<t.length; i++) {
438 if (r.length() > initlen) r.append(" ");
439 if (t[i] == null || t[i].s == null) continue;
440 String s = t[i].s.toUpperCase();
441 r.append(s.equalsIgnoreCase("BODY.PEEK")?"BODY":s);
442 if (s.equals("BODYSTRUCTURE")) { spec|=BODYSTRUCTURE;if(e){r.append(" ");r.append(Printer.bodystructure(m));}
443 } else if (s.equals("ENVELOPE")) { spec|=ENVELOPE; if(e){r.append(" ");r.append(Printer.envelope(m));}
444 } else if (s.equals("FLAGS")) { spec|=FLAGS; if(e){r.append(" ");r.append(Printer.flags(flags));}
445 } else if (s.equals("INTERNALDATE")) { spec|=INTERNALDATE; if(e){r.append(" ");r.append(Printer.date(m.arrival));}
446 } else if (s.equals("RFC822")) { spec|=RFC822; if(e){r.append(" ");r.append(Printer.message(m));}
447 } else if (s.equals("RFC822.TEXT")) { spec|=RFC822TEXT; if(e){r.append(" ");r.append(Printer.qq(getBodyString(m)));}
448 } else if (s.equals("RFC822.HEADER")){ spec|=HEADER;if(e){r.append(" ");r.append(Printer.qq(m.headers.getString()+"\r\n"));}
449 } else if (s.equals("RFC822.SIZE")) { spec|=RFC822SIZE; if(e){r.append(" ");r.append(m.getLength());}
450 } else if (s.equals("UID")) { spec|=UID; if(e){r.append(" ");r.append(muid); }
451 } else if (!(s.equals("BODY.PEEK") || s.equals("BODY"))) { throw new Server.No("unknown fetch argument: " + s);
453 if (s.equalsIgnoreCase("BODY.PEEK")) spec |= PEEK;
454 //else if (e) api.addFlags(Query.num(new int[] { num, num }), Mailbox.Flag.SEEN, false, false);
455 if (i >= t.length - 1 || t[i+1].type != Parser.Token.LIST) {
456 spec |= BODYSTRUCTURE;
457 if (e) { r.append(" "); r.append(Printer.bodystructure(m)); } continue;
458 //{ if (e) { r.append(" "); r.append(Printer.qq(m.body)); } continue; }
462 Parser.Token[] list = t[++i].l();
463 s = list.length == 0 ? "" : list[0].s.toUpperCase();
465 if (list.length == 0) { spec |= RFC822TEXT; if(e) payload = m.headers.getString()+"\r\n"+getBodyString(m); }
466 else if (s.equals("") || s.equals("1")) { spec |= RFC822TEXT; if(e) payload = m.headers.getString()+"\r\n"+getBodyString(m); }
467 else if (s.equals("TEXT")) { spec |= RFC822TEXT; if(e) payload = getBodyString(m); }
468 else if (s.equals("HEADER")) { spec |= HEADER; if(e) payload = m.headers.getString()+"\r\n"; }
469 else if (s.equals("HEADER.FIELDS")) { spec |= FIELDS; payload=headers(r,t[i].l()[1].sl(),false,m,e); }
470 else if (s.equals("HEADER.FIELDS.NOT")) { spec |= FIELDSNOT; payload=headers(r,t[i].l()[1].sl(),true,m,e); }
471 else if (s.equals("MIME")) { throw new Server.Bad("MIME not supported"); }
472 else throw new Server.Bad("unknown section type " + s);
473 if (i<t.length - 1 && (t[i+1].s != null && t[i+1].s.startsWith("<"))) {
475 s = t[i].s.substring(1, t[i].s.indexOf('>'));
476 int dot = s.indexOf('.');
477 start = dot == -1 ? Integer.parseInt(s) : Integer.parseInt(s.substring(0, s.indexOf('.')));
478 end = dot == -1 ? -1 : Integer.parseInt(s.substring(s.indexOf('.') + 1));
479 if (e) { payload = payload.substring(start, Math.min(end+1,payload.length())); r.append("<"+start+">"); }
481 if (e) { r.append("] "); r.append(Printer.qq(payload)); }
486 println("* " + r.toString());
488 api.fetch(q, spec, headers, start, end, uid);
492 private String headers(StringBuffer r, String[] headers, boolean negate, Message m, boolean e) {
494 if (e) r.append(" (");
496 if(e) for(int j=0; j<headers.length; j++) {
497 r.append(headers[j] + (j<headers.length-1?" ":""));
498 if (m.headers.get(headers[j]) != null) payload += headers[j]+": "+m.headers.get(headers[j])+"\r\n";
501 throw new Server.No("HEADERS.NOT temporarily disaled");
503 if (e) for(int j=0; j<headers.length; j++) r.append(headers[j] + (j<headers.length-1?" ":""));
504 if(e) { OUTER: for(Enumeration x=m.headers.keys(); x.hasMoreElements();) {
505 String key = (String)x.nextElement();
506 for(int j=0; j<headers.length; j++) if (key.equalsIgnoreCase(headers[j])) continue OUTER;
507 payload += key + ": " + m.headers.get(key)+"\r\n";
511 if (e) r.append(")");
512 return payload + "\r\n";
515 private static final Hashtable commands = new Hashtable();
516 private static final int UID = 0; static { commands.put("UID", new Integer(UID)); }
517 private static final int AUTHENTICATE = 1; static { commands.put("AUTHENTICATE", new Integer(AUTHENTICATE)); }
518 private static final int LIST = 2; static { commands.put("LIST", new Integer(LIST)); }
519 private static final int LSUB = 3; static { commands.put("LSUB", new Integer(LSUB)); }
520 private static final int SUBSCRIBE = 4; static { commands.put("SUBSCRIBE", new Integer(SUBSCRIBE)); }
521 private static final int UNSUBSCRIBE = 5; static { commands.put("UNSUBSCRIBE", new Integer(UNSUBSCRIBE)); }
522 private static final int CAPABILITY = 6; static { commands.put("CAPABILITY", new Integer(CAPABILITY)); }
523 private static final int ID = 7; static { commands.put("ID", new Integer(ID)); }
524 private static final int LOGIN = 8; static { commands.put("LOGIN", new Integer(LOGIN)); }
525 private static final int LOGOUT = 9; static { commands.put("LOGOUT", new Integer(LOGOUT)); }
526 private static final int RENAME = 10; static { commands.put("RENAME", new Integer(RENAME)); }
527 private static final int EXAMINE = 11; static { commands.put("EXAMINE", new Integer(EXAMINE)); }
528 private static final int SELECT = 12; static { commands.put("SELECT", new Integer(SELECT)); }
529 private static final int COPY = 13; static { commands.put("COPY", new Integer(COPY)); }
530 private static final int DELETE = 14; static { commands.put("DELETE", new Integer(DELETE)); }
531 private static final int CHECK = 15; static { commands.put("CHECK", new Integer(CHECK)); }
532 private static final int NOOP = 16; static { commands.put("NOOP", new Integer(NOOP)); }
533 private static final int CLOSE = 17; static { commands.put("CLOSE", new Integer(CLOSE)); }
534 private static final int EXPUNGE = 18; static { commands.put("EXPUNGE", new Integer(EXPUNGE)); }
535 private static final int UNSELECT = 19; static { commands.put("UNSELECT", new Integer(UNSELECT)); }
536 private static final int CREATE = 20; static { commands.put("CREATE", new Integer(CREATE)); }
537 private static final int STATUS = 21; static { commands.put("STATUS", new Integer(STATUS)); }
538 private static final int FETCH = 22; static { commands.put("FETCH", new Integer(FETCH)); }
539 private static final int APPEND = 23; static { commands.put("APPEND", new Integer(APPEND)); }
540 private static final int STORE = 24; static { commands.put("STORE", new Integer(STORE)); }
541 private static final int SEARCH = 25; static { commands.put("SEARCH", new Integer(SEARCH)); }
544 public static class Parser {
545 private Stream stream;
546 public Parser(Stream from) { this.stream = from; }
547 public Token token(String s) { return new Token(s); }
548 protected Query query(int max, int maxuid) {
554 Parser.Token t = token(false);
555 if (t == null) break;
556 if (t.type == t.LIST) throw new Server.No("nested queries not yet supported FIXME");
557 else if (t.type == t.SET) return Query.num(t.set(max));
558 s = t.atom().toUpperCase();
559 if (s.equals("NOT")) return Query.not(query(max, maxuid));
560 if (s.equals("OR")) return Query.or(query(max, maxuid), query(max, maxuid)); // FIXME parse rest of list
561 if (s.equals("AND")) return Query.and(query(max, maxuid), query(max, maxuid));
563 if (s.startsWith("UN")) { not = true; s = s.substring(2); }
564 if (s.equals("ANSWERED")) q = Query.answered();
565 else if (s.equals("DELETED")) q = Query.deleted();
566 else if (s.equals("ALL")) q = Query.all();
567 else if (s.equals("DRAFT")) q = Query.draft();
568 else if (s.equals("FLAGGED")) q = Query.flagged();
569 else if (s.equals("RECENT")) q = Query.recent();
570 else if (s.equals("SEEN")) q = Query.seen();
571 else if (s.equals("OLD")) { not = true; q = Query.recent(); }
572 else if (s.equals("NEW")) q = Query.and(Query.recent(), Query.not(Query.seen()));
573 else if (s.equals("KEYWORD")) q = Query.header("keyword", token().flag());
574 else if (s.equals("HEADER")) q = Query.header(token().astring(), token().astring());
575 else if (s.equals("BCC")) q = Query.header("bcc", token().astring());
576 else if (s.equals("CC")) q = Query.header("cc", token().astring());
577 else if (s.equals("FROM")) q = Query.header("from", token().astring());
578 else if (s.equals("TO")) q = Query.header("to", token().astring());
579 else if (s.equals("SUBJECT")) q = Query.header("subject", token().astring());
580 else if (s.equals("LARGER")) q = Query.size(token().n(), Integer.MAX_VALUE);
581 else if (s.equals("SMALLER")) q = Query.size(Integer.MIN_VALUE, token().n());
582 else if (s.equals("BODY")) q = Query.body(token().astring());
583 else if (s.equals("TEXT")) q = Query.full(token().astring());
584 else if (s.equals("BEFORE")) q = Query.arrival(new Date(0), token().date());
585 else if (s.equals("SINCE")) q = Query.arrival(token().date(), new Date(Long.MAX_VALUE));
586 else if (s.equals("ON")) { Date d = token().date(); q = Query.arrival(d, new Date(d.getTime() + 24 * 60 * 60)); }
587 else if (s.equals("SENTBEFORE")) q = Query.sent(new Date(0), token().date());
588 else if (s.equals("SENTSINCE")) q = Query.sent(token().date(), new Date(Long.MAX_VALUE));
589 else if (s.equals("SENTON")) { Date d = token().date(); q = Query.sent(d, new Date(d.getTime() + 24 * 60 * 60)); }
590 else if (s.equals("UID")) q = Query.uid(token().set(max));
591 q = not ? Query.not(q) : q;
592 ret = ret == null ? q : Query.and(ret, q);
597 private static void bad(String s) { throw new Server.Bad(s); }
599 public final byte type;
600 private final String s;
601 private final Parser.Token[] l;
603 private static final byte NIL = 0, LIST = 1, QUOTED = 2, NUMBER = 3, ATOM = 4, BAREWORD = 5, SET = 6;
604 public Token() { this.s = null; n = 0; l = null; type = NIL; }
605 public Token(String s) { this(s, false); }
606 public Token(String s, boolean quoted) { this.s = s; n = 0; l = null; type = quoted ? QUOTED : ATOM; }
607 public Token(Parser.Token[] list) { this.s = null; n = 0; l = list; type = LIST; }
608 public Token(int number) { this.s = null; n = number; l = null; type = NUMBER; }
610 public String flag() { if (type != ATOM) bad("expected a flag"); return s; }
611 public int n() { if (type != NUMBER) bad("expected number"); return n; }
612 public int nz() { int n = n(); if (n == 0) bad("expected nonzero number"); return n; }
613 public String q() { if (type == NIL) return null; if (type != QUOTED) bad("expected qstring"); return s; }
614 public Parser.Token[] l() { if (type == NIL) return null; if (type != LIST) bad("expected list"); return l; }
615 public Parser.Token[] lx() {
616 if (type == LIST) return l;
620 Parser.Token t = token(false);
621 if (t == null) break;
624 Parser.Token[] ret = new Parser.Token[v.size()];
628 public String nstring() { if (type==NIL) return null; if (type!=QUOTED) bad("expected nstring"); return s; }
629 public String astring() {
630 if (type != ATOM && type != QUOTED) bad("expected atom or string");
631 if (s == null) bad("astring cannot be null");
633 public String[] sl() {
634 if (type == NIL) return null;
635 if (type != LIST) bad("expected list");
636 String[] ret = new String[l.length];
637 for(int i=0; i<ret.length; i++) ret[i] = l[i].s;
641 if (type != LIST) bad("expected flag list");
643 for(int i=0; i<l.length; i++) {
644 String flag = l[i].s;
645 if (flag.equals("\\Deleted")) ret |= Mailbox.Flag.DELETED;
646 else if (flag.equals("\\Seen")) ret |= Mailbox.Flag.SEEN;
647 else if (flag.equals("\\Flagged")) ret |= Mailbox.Flag.FLAGGED;
648 else if (flag.equals("\\Draft")) ret |= Mailbox.Flag.DRAFT;
649 else if (flag.equals("\\Answered")) ret |= Mailbox.Flag.ANSWERED;
650 else if (flag.equals("\\Recent")) ret |= Mailbox.Flag.RECENT;
654 public int[] set(int largest) {
655 if (type != ATOM) bad("expected a messageid set");
656 Vec.Int ids = new Vec.Int();
657 StringTokenizer st = new StringTokenizer(s, ",");
658 while(st.hasMoreTokens()) {
659 String s = st.nextToken();
660 if (s.indexOf(':') == -1) {
662 ids.addElement(largest);
663 ids.addElement(largest);
665 ids.addElement(Integer.parseInt(s));
666 ids.addElement(Integer.parseInt(s));
669 int start = Integer.parseInt(s.substring(0, s.indexOf(':')));
670 String end_s = s.substring(s.indexOf(':')+1);
671 int end = end_s.equals("*") ? largest : Integer.parseInt(end_s);
672 for(int j=Math.min(start,end); j<=Math.max(start,end); j++) {
680 if (type != QUOTED && type != ATOM) bad("Expected quoted or unquoted date");
681 try { return new SimpleDateFormat("dd-MMM-yyyy").parse(s);
682 } catch (ParseException p) { throw new Server.Bad("invalid date format; " + p); }
684 public Date datetime() {
685 if (type != QUOTED) bad("Expected quoted datetime");
686 try { return new SimpleDateFormat("dd-MM-yyyy hh:mm:ss zzzz").parse(s.trim());
687 } catch (ParseException p) { throw new Server.Bad("invalid datetime format " + s + " : " + p); }
689 public String atom() {
690 if (type != ATOM) bad("expected atom");
691 for(int i=0; i<s.length(); i++) {
692 char c = s.charAt(i);
693 if (c == '(' || c == ')' || c == '{' || c == ' ' || c == '%' || c == '*' || c == '\"' | c == '\\')
694 bad("invalid char in atom: " + c);
700 public void newline() {
701 while (stream.peekc() == '\r' || stream.peekc() == '\n' || stream.peekc() == ' ') {
702 for(char c = stream.peekc(); c == ' ';) { stream.getc(); c = stream.peekc(); };
703 for(char c = stream.peekc(); c == '\r' || c == '\n';) { stream.getc(); c = stream.peekc(); };
707 public Token token() { return token(true); }
708 public Token token(boolean freak) {
709 Vec toks = new Vec();
710 StringBuffer sb = new StringBuffer();
711 char c = stream.getc(); while (c == ' ') c = stream.getc();
712 if (c == '\r' || c == '\n') { if (freak) bad("unexpected end of line"); return null; }
714 while(stream.peekc() != '}') sb.append(stream.getc());
716 stream.println("+ Ready when you are...");
717 int octets = Integer.parseInt(sb.toString());
718 while(stream.peekc() == ' ') stream.getc(); // whitespace
719 while(stream.peekc() == '\n' || stream.peekc() == '\r') stream.getc();
720 byte[] bytes = new byte[octets];
722 while(numread < bytes.length) {
723 int n = stream.read(bytes, numread, bytes.length - numread);
724 if (n == -1) bad("end of stream while reading IMAP qstring");
727 return new Token(new String(bytes), true);
728 } else if (c == '\"') {
731 if (c == '\\') sb.append(stream.getc());
732 else if (c == '\"') break;
735 return new Token(sb.toString(), true);
737 // NOTE: this is technically a violation of the IMAP grammar, since atoms like FOO[BAR should be legal
738 } else if (c == ']' || c == ')') { return null;
739 } else if (c == '[' || c == '(') {
741 do { t = token(); if (t != null) toks.addElement(t); } while (t != null);
742 Token[] ret = new Token[toks.size()];
744 return new Token(ret);
749 if (c == ' ' || c == '\"' || c == '(' || c == ')' || c == '[' || c == ']' ||
750 c == '{' || c == '\n' || c == '\r')
751 return new Token(sb.toString(), false);
757 public static class Printer {
758 static String quotify(String s){
759 return s==null?"NIL":"\""+s.replaceAll("\\\\","\\\\").replaceAll("\"","\\\\\"")+"\"";}
760 static String quotify(Date d) {
761 return new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss +zzzz").format(d); }
762 static String address(Address a) {
763 return"("+quotify(a.description)+" NIL "+quotify(a.user)+" "+quotify(a.host)+")"; }
764 public static String addressList(Object a) {
765 if (a == null) return "NIL";
766 if (a instanceof Address) return "("+address((Address)a)+")";
767 if (a instanceof String) return "("+address(Address.parse((String)a))+")";
768 Address[] aa = (Address[])a;
769 StringBuffer ret = new StringBuffer();
771 for(int i=0; i<aa.length; i++) { ret.append(aa[i]); if (i < aa.length - 1) ret.append(" "); }
773 return ret.toString();
775 static String flags(Mailbox.Iterator it) {
777 (it.deleted() ? "\\Deleted " : "") +
778 (it.seen() ? "\\Seen " : "") +
779 (it.flagged() ? "\\Flagged " : "") +
780 (it.draft() ? "\\Draft " : "") +
781 (it.answered() ? "\\Answered " : "") +
782 (it.recent() ? "\\Recent " : "");
784 static String flags(int flags) {
786 (((flags & Mailbox.Flag.DELETED) == Mailbox.Flag.DELETED) ? "\\Deleted " : "") +
787 (((flags & Mailbox.Flag.SEEN) == Mailbox.Flag.SEEN) ? "\\Seen " : "") +
788 (((flags & Mailbox.Flag.FLAGGED) == Mailbox.Flag.FLAGGED) ? "\\Flagged " : "") +
789 (((flags & Mailbox.Flag.DRAFT) == Mailbox.Flag.DRAFT) ? "\\Draft " : "") +
790 (((flags & Mailbox.Flag.ANSWERED) == Mailbox.Flag.ANSWERED)? "\\Answered " : "") +
791 (((flags & Mailbox.Flag.RECENT) == Mailbox.Flag.RECENT) ? "\\Recent " : "");
792 if (ret.endsWith(" ")) ret = ret.substring(0, ret.length() - 1);
795 static String bodystructure(Message m) {
797 return "(\"TEXT\" \"PLAIN\" (\"CHARSET\" \"ISO-8859-1\") NIL NIL \"7BIT\" "+m.getLength()+" "+m.getNumLines()+")";
799 static String message(Message m) { return m.toString(); }
800 static String date(Date d) { return "\""+d.toString()+"\""; }
801 static String envelope(Message m) {
803 "(" + quotify(m.arrival.toString()) +
804 " " + quotify(m.subject) +
805 " " + addressList(m.from) +
806 " " + addressList(m.headers.get("sender")) +
807 " " + addressList(m.replyto) +
808 " " + addressList(m.to) +
809 " " + addressList(m.cc) +
810 " " + addressList(m.bcc) +
811 " " + quotify((String)m.headers.get("in-reply-to")) +
812 " " + quotify(m.messageid) +
816 public static String qq(String s) {
817 StringBuffer ret = new StringBuffer();
819 ret.append(s.getBytes().length);
824 return ret.toString();
827 private static String join(int[] nums) {
828 StringBuffer ret = new StringBuffer();
829 for(int i=0; i<nums.length; i++) {
831 if (i<nums.length-1) ret.append(' ');
833 return ret.toString();
835 private static String join(String delimit, String[] stuff) {
836 StringBuffer ret = new StringBuffer();
837 for(int i=0; i<stuff.length; i++) {
838 ret.append(stuff[i]);
839 if (i<stuff.length - 1) ret.append(delimit);
841 return ret.toString();
846 // Main //////////////////////////////////////////////////////////////////////////////
848 public static final int
849 PEEK=0x1, BODYSTRUCTURE=0x2, ENVELOPE=0x4, FLAGS=0x8, INTERNALDATE=0x10, FIELDS=0x800, FIELDSNOT=0x1000,
850 RFC822=0x20, RFC822TEXT=0x40, RFC822SIZE=0x80, HEADERNOT=0x100, UID=0x200, HEADER=0x400;