Source Code Cross Referenced for ImapMailboxEntry.java in  » IDE » J » org » armedbear » j » mail » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE » J » org.armedbear.j.mail 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * ImapMailboxEntry.java
003:         *
004:         * Copyright (C) 2000-2002 Peter Graves
005:         * $Id: ImapMailboxEntry.java,v 1.1.1.1 2002/09/24 16:10:10 piso Exp $
006:         *
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License
009:         * as published by the Free Software Foundation; either version 2
010:         * of the License, or (at your option) any later version.
011:         *
012:         * This program is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015:         * GNU General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU General Public License
018:         * along with this program; if not, write to the Free Software
019:         * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
020:         */
021:
022:        package org.armedbear.j.mail;
023:
024:        import java.io.Serializable;
025:        import java.text.SimpleDateFormat;
026:        import java.util.ArrayList;
027:        import java.util.Date;
028:        import java.util.List;
029:        import java.util.TimeZone;
030:        import org.armedbear.j.FastStringBuffer;
031:        import org.armedbear.j.Log;
032:        import org.armedbear.j.StringPair;
033:        import org.armedbear.j.Utilities;
034:
035:        /*package*/final class ImapMailboxEntry extends MailboxEntry implements 
036:                Serializable {
037:            private transient ImapMailbox mailbox;
038:
039:            private int uid;
040:            private RFC822Date arrival;
041:
042:            private ImapMailboxEntry() {
043:            }
044:
045:            // For testing only!
046:            /*package*/ImapMailboxEntry(int uid) {
047:                this .uid = uid;
048:            }
049:
050:            public final ImapMailbox getMailbox() {
051:                return mailbox;
052:            }
053:
054:            public final void setMailbox(ImapMailbox mailbox) {
055:                this .mailbox = mailbox;
056:            }
057:
058:            public final int getUid() {
059:                return uid;
060:            }
061:
062:            public final RFC822Date getArrival() {
063:                return arrival;
064:            }
065:
066:            private static final String INTERNALDATE_START = "INTERNALDATE ";
067:            private static final String RFC822_SIZE_START = "RFC822.SIZE ";
068:            private static final String ENVELOPE_START = "ENVELOPE (";
069:            private static final String REFERENCES_START = "BODY[HEADER.FIELDS (\"REFERENCES\")]";
070:
071:            public static ImapMailboxEntry parseEntry(ImapMailbox mailbox,
072:                    final String s) {
073:                ImapMailboxEntry entry = new ImapMailboxEntry();
074:                entry.mailbox = mailbox;
075:                entry.messageNumber = parseMessageNumber(s);
076:                if (entry.messageNumber < 1) {
077:                    Log.error("can't parse message number");
078:                    return null;
079:                }
080:                entry.uid = parseUid(s);
081:                if (entry.uid < 1) {
082:                    Log.error("can't parse uid");
083:                    return null;
084:                }
085:                entry.flags = parseFlags(s);
086:                int index = s.indexOf(INTERNALDATE_START);
087:                if (index < 0) {
088:                    Log.error("can't find INTERNALDATE");
089:                    return null;
090:                }
091:                StringPair p = parseQuoted(s.substring(index
092:                        + INTERNALDATE_START.length()));
093:                if (p == null) {
094:                    Log.error("can't parse INTERNALDATE");
095:                    return null;
096:                }
097:                entry.arrival = entry.parseInternalDate(p.first.trim());
098:                String remaining = p.second;
099:                index = remaining.indexOf(RFC822_SIZE_START);
100:                if (index < 0) {
101:                    Log.error("can't find RFC822.SIZE");
102:                    return null;
103:                }
104:                remaining = remaining.substring(index
105:                        + RFC822_SIZE_START.length());
106:                entry.size = -1;
107:                try {
108:                    entry.size = Utilities.parseInt(remaining);
109:                } catch (NumberFormatException e) {
110:                    Log.error("can't parse RFC822.SIZE");
111:                    Log.error("|" + remaining + "|");
112:                    Log.error(e);
113:                    return null;
114:                }
115:                index = remaining.indexOf(ENVELOPE_START);
116:                if (index < 0) {
117:                    Log.error("can't find ENVELOPE");
118:                    return null;
119:                }
120:                remaining = remaining
121:                        .substring(index + ENVELOPE_START.length());
122:                // Next field is date (quoted string).
123:                p = parseQuoted(remaining);
124:                if (p == null) {
125:                    Log.error("can't parse date");
126:                    return null;
127:                }
128:                entry.date = RFC822Date.parseDate(p.first);
129:                remaining = p.second;
130:                // Next field is subject (quoted string).
131:                p = parseQuoted(remaining);
132:                if (p == null) {
133:                    Log.error("can't parse subject");
134:                    return null;
135:                }
136:                entry.subject = p.first == null ? "" : RFC2047.decode(p.first);
137:                remaining = p.second;
138:                // Next field is "From" (parenthesized list).
139:                p = parseParenthesizedList(remaining);
140:                if (p == null) {
141:                    Log.error("can't parse \"From\" list");
142:                    return null;
143:                }
144:                if (p.first != null)
145:                    entry.from = parseAddressList(p.first);
146:                remaining = p.second;
147:                do {
148:                    // Sender
149:                    p = parseParenthesizedList(remaining);
150:                    if (p == null) {
151:                        Log.error("can't parse \"Sender\" list");
152:                        break;
153:                    }
154:                    remaining = p.second;
155:                    // Reply-To
156:                    p = parseParenthesizedList(remaining);
157:                    if (p == null) {
158:                        Log.error("can't parse \"Reply-To\" list");
159:                        break;
160:                    }
161:                    if (p.first != null)
162:                        entry.replyTo = parseAddressList(p.first);
163:                    remaining = p.second;
164:                    // To
165:                    p = parseParenthesizedList(remaining);
166:                    if (p == null) {
167:                        Log.error("can't parse \"To\" list");
168:                        break;
169:                    }
170:                    if (p.first != null)
171:                        entry.to = parseAddressList(p.first);
172:                    remaining = p.second;
173:                    // Cc
174:                    p = parseParenthesizedList(remaining);
175:                    if (p == null) {
176:                        Log.error("can't parse \"Cc\" list");
177:                        break;
178:                    }
179:                    if (p.first != null)
180:                        entry.cc = parseAddressList(p.first);
181:                    remaining = p.second;
182:                    // Bcc
183:                    p = parseParenthesizedList(remaining);
184:                    if (p == null) {
185:                        Log.error("can't parse \"Bcc\" list");
186:                        break;
187:                    }
188:                    remaining = p.second;
189:                    // In-Reply-To (quoted string)
190:                    p = parseQuoted(remaining);
191:                    if (p == null) {
192:                        Log.error("can't parse \"In-Reply-To\"");
193:                        break;
194:                    }
195:                    entry.inReplyTo = parseInReplyTo(p.first);
196:                    remaining = p.second;
197:                    p = parseQuoted(remaining);
198:                    if (p == null) {
199:                        Log.error("can't parse \"Message-ID\"");
200:                        break;
201:                    }
202:                    entry.messageId = p.first;
203:                } while (false);
204:                remaining = p.second;
205:                index = remaining.indexOf(REFERENCES_START);
206:                if (index >= 0) {
207:                    remaining = remaining.substring(index
208:                            + REFERENCES_START.length());
209:                    p = parseQuoted(remaining);
210:                    if (p != null) {
211:                        String refs = p.first.trim();
212:                        if (refs.length() > 0)
213:                            entry.references = parseReferences(refs);
214:                    }
215:                }
216:                if (entry.subject != null)
217:                    return entry;
218:                Log.error("skipping entry");
219:                return null;
220:            }
221:
222:            private static int parseMessageNumber(String s) {
223:                final int length = s.length();
224:                if (length < 2)
225:                    return 0; // Error.
226:                // String must start with "* ".
227:                if (s.charAt(0) != '*' || s.charAt(1) != ' ')
228:                    return 0; // Error.
229:                FastStringBuffer sb = new FastStringBuffer();
230:                for (int i = 2; i < length; i++) {
231:                    char c = s.charAt(i);
232:                    if (c >= '0' && c <= '9')
233:                        sb.append(c);
234:                    else
235:                        break;
236:                }
237:                try {
238:                    return Integer.parseInt(sb.toString());
239:                } catch (NumberFormatException e) {
240:                    Log.error(e);
241:                    return 0;
242:                }
243:            }
244:
245:            public static int parseUid(String s) {
246:                final int length = s.length();
247:                if (length < 2)
248:                    return 0; // Error.
249:                // String must start with "* ".
250:                if (s.charAt(0) != '*' || s.charAt(1) != ' ')
251:                    return 0; // Error.
252:                int index = s.indexOf("UID ");
253:                if (index < 0)
254:                    return 0;
255:                FastStringBuffer sb = new FastStringBuffer();
256:                for (int i = index + 4; i < length; i++) {
257:                    char c = s.charAt(i);
258:                    if (c >= '0' && c <= '9')
259:                        sb.append(c);
260:                    else
261:                        break;
262:                }
263:                try {
264:                    return Integer.parseInt(sb.toString());
265:                } catch (NumberFormatException e) {
266:                    Log.error(e);
267:                    return 0;
268:                }
269:            }
270:
271:            private static final String FLAGS_START = "FLAGS (";
272:
273:            public static int parseFlags(String s) {
274:                int flags = 0;
275:                final int index = s.indexOf(FLAGS_START);
276:                if (index >= 0) {
277:                    StringPair p = parseParenthesized(s.substring(index));
278:                    if (p != null && p.first != null) {
279:                        String flagsList = p.first.toLowerCase();
280:                        if (flagsList.length() > 0) {
281:                            if (flagsList.indexOf("seen") >= 0)
282:                                flags |= SEEN;
283:                            if (flagsList.indexOf("answered") >= 0)
284:                                flags |= ANSWERED;
285:                            if (flagsList.indexOf("recent") >= 0)
286:                                flags |= RECENT;
287:                            if (flagsList.indexOf("deleted") >= 0)
288:                                flags |= DELETED;
289:                            if (flagsList.indexOf("flagged") >= 0)
290:                                flags |= FLAGGED;
291:                        }
292:                    }
293:                }
294:                return flags;
295:            }
296:
297:            private static StringPair parseQuoted(String s) {
298:                s = s.trim();
299:                if (s.length() == 0)
300:                    return null;
301:                String quoted = null;
302:                String remaining = null;
303:                if (s.charAt(0) == '{') {
304:                    int end = s.indexOf('}', 1);
305:                    if (end < 0) {
306:                        Log.error("parseQuoted: bad literal");
307:                        return null;
308:                    }
309:                    int length = 0;
310:                    try {
311:                        length = Integer.parseInt(s.substring(1, end));
312:                    } catch (NumberFormatException e) {
313:                        Log.error(e);
314:                    }
315:                    if (length == 0) {
316:                        Log.error("parseQuoted: length of literal is zero");
317:                        return null;
318:                    }
319:                    int begin = s.indexOf('\n', end + 1);
320:                    if (begin < 0) {
321:                        Log.error("parseQuoted: no LF after literal");
322:                        return null;
323:                    }
324:                    ++begin; // Skip LF.
325:                    end = begin + length;
326:                    if (end > s.length()) {
327:                        Log.error("parseQuoted end > s.length()");
328:                        return null;
329:                    }
330:                    quoted = s.substring(begin, end);
331:                    remaining = s.substring(end);
332:                } else if (s.startsWith("NIL")) {
333:                    quoted = null;
334:                    remaining = s.substring(3).trim();
335:                } else {
336:                    int begin = s.indexOf('"');
337:                    if (begin < 0)
338:                        return null;
339:                    int end = s.indexOf('"', begin + 1);
340:                    if (end < 0)
341:                        return null;
342:                    quoted = s.substring(begin + 1, end);
343:                    remaining = s.substring(end + 1);
344:                }
345:                return new StringPair(quoted, remaining);
346:            }
347:
348:            private static StringPair parseParenthesized(String s) {
349:                int begin = s.indexOf('(');
350:                if (begin < 0)
351:                    return null;
352:                int end = -1;
353:                final int limit = s.length();
354:                boolean inQuote = false;
355:                char quoteChar = '\0';
356:                for (int i = begin + 1; i < limit; i++) {
357:                    char c = s.charAt(i);
358:                    if (inQuote) {
359:                        if (c == quoteChar)
360:                            inQuote = false;
361:                    } else {
362:                        // Not in quote.
363:                        if (c == '"' || c == '\'') {
364:                            inQuote = true;
365:                            quoteChar = c;
366:                        } else if (c == ')') {
367:                            end = i;
368:                            break;
369:                        }
370:                    }
371:                }
372:                if (end < 0)
373:                    return null;
374:                String parenthesized = s.substring(begin + 1, end);
375:                String remaining = s.substring(end + 1);
376:                return new StringPair(parenthesized, remaining);
377:            }
378:
379:            static private StringPair parseParenthesizedList(String s) {
380:                s = s.trim();
381:                if (s.startsWith("NIL"))
382:                    return new StringPair(null, s.substring(3).trim());
383:                int begin = s.indexOf("((");
384:                if (begin < 0)
385:                    return null;
386:                int end = s.indexOf("))");
387:                if (end < 0)
388:                    return null;
389:                String list = s.substring(begin, end + 2);
390:                String remaining = s.substring(end + 2);
391:                return new StringPair(list, remaining);
392:            }
393:
394:            private static MailAddress[] parseAddressList(String list) {
395:                if (list == null)
396:                    return null;
397:                ArrayList addresses = new ArrayList();
398:                String remaining = list.substring(1, list.length() - 1);
399:                while (remaining.length() > 0) {
400:                    StringPair p = parseParenthesized(remaining);
401:                    if (p == null) {
402:                        Log.error("parseAddressList error");
403:                        Log.error("list = |" + list + "|");
404:                        Log.error("remaining = |" + remaining + "|");
405:                        return null;
406:                    }
407:                    String s = p.first; // The address.
408:                    MailAddress address = parseAddress(s);
409:                    if (address == null) {
410:                        Log.error("**** parseAddress returned null");
411:                        Log.error("s = |" + s + "|");
412:                    }
413:                    if (address != null)
414:                        addresses.add(address);
415:                    remaining = p.second;
416:                }
417:                if (addresses.size() == 0)
418:                    return null;
419:                MailAddress[] array = new MailAddress[addresses.size()];
420:                return (MailAddress[]) addresses.toArray(array);
421:            }
422:
423:            private static MailAddress parseAddress(String s) {
424:                StringPair p = parseQuoted(s);
425:                if (p == null) // Error.
426:                    return null;
427:                String encodedPersonal = p.first;
428:                String remaining = p.second;
429:                p = parseQuoted(remaining);
430:                if (p == null) // Error.
431:                    return null;
432:                String sourceRoute = p.first;
433:                remaining = p.second;
434:                p = parseQuoted(remaining);
435:                if (p == null) // Error.
436:                    return null;
437:                String mailName = p.first;
438:                remaining = p.second;
439:                p = parseQuoted(remaining);
440:                if (p == null) // Error.
441:                    return null;
442:                String domainName = p.first;
443:                remaining = p.second;
444:                if (remaining.length() > 0)
445:                    Log
446:                            .error("**** parseAddress: unexpected string remaining ****");
447:                return new MailAddress(encodedPersonal, mailName + '@'
448:                        + domainName);
449:            }
450:
451:            private static SimpleDateFormat internalDateFormat = new SimpleDateFormat(
452:                    "dd-MMM-yyyy HH:mm:ss");
453:
454:            private static RFC822Date parseInternalDate(String internalDate) {
455:                Date date = null;
456:                int index = internalDate.indexOf(' ');
457:                if (index >= 0) {
458:                    index = internalDate.indexOf(' ', index + 1);
459:                    if (index >= 0) {
460:                        String dateString = internalDate.substring(0, index);
461:                        String timeZone = internalDate.substring(index + 1);
462:                        TimeZone tz = TimeZone.getTimeZone("GMT" + timeZone);
463:                        if (tz != null)
464:                            internalDateFormat.setTimeZone(tz);
465:                        try {
466:                            date = internalDateFormat.parse(dateString);
467:                        } catch (Throwable t) {
468:                            Log.error(t);
469:                        }
470:                    }
471:                }
472:                return new RFC822Date(date);
473:            }
474:        }
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