-
Notifications
You must be signed in to change notification settings - Fork 120
/
DefaultCalendarSearchService.java
365 lines (331 loc) · 14.3 KB
/
DefaultCalendarSearchService.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
/*
* Copyright 2013 McEvoy Software Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.milton.http.caldav;
import io.milton.http.HttpManager;
import io.milton.http.ResourceFactory;
import io.milton.http.exceptions.BadRequestException;
import io.milton.http.exceptions.NotAuthorizedException;
import io.milton.mail.MailboxAddress;
import io.milton.principal.CalDavPrincipal;
import io.milton.resource.CalendarResource;
import io.milton.resource.CollectionResource;
import io.milton.resource.ICalResource;
import io.milton.resource.Resource;
import io.milton.resource.SchedulingResponseItem;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import net.fortuna.ical4j.data.ParserException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author brad
*/
public class DefaultCalendarSearchService implements CalendarSearchService {
private static final Logger log = LoggerFactory.getLogger(DefaultCalendarSearchService.class);
private final ICalFormatter formatter;
private final ResourceFactory resourceFactory;
private String schedulingColName = "cals";
private String inboxName = "inbox";
private String outBoxName = "outbox";
private String usersBasePath = "/users/";
public DefaultCalendarSearchService(ICalFormatter formatter, ResourceFactory resourceFactory) {
if (resourceFactory == null) {
throw new NullPointerException("ResourceFactory is null");
}
this.formatter = formatter;
this.resourceFactory = resourceFactory;
}
@Override
public List<ICalResource> findCalendarResources(CalendarResource calendar, Date start, Date end) throws NotAuthorizedException, BadRequestException {
// build a list of all calendar resources
List<ICalResource> list = new ArrayList<ICalResource>();
for (Resource r : calendar.getChildren()) {
if (r instanceof ICalResource) {
ICalResource cr = (ICalResource) r;
list.add(cr);
}
}
// So now we have (or might have) start and end dates, so filter list
Iterator<ICalResource> it = list.iterator();
while (it.hasNext()) {
ICalResource r = it.next();
if (outsideDates(r, start, end)) {
log.info("Not in range: " + r.getName());
it.remove();
}
}
return list;
}
private boolean outsideDates(ICalResource r, Date start, Date end) {
log.info("outsideDates: " + r.getName());
EventResource event;
if (r instanceof EventResource) {
event = (EventResource) r;
} else {
event = new EventResourceImpl();
try {
formatter.parseEvent(event, r.getICalData());
} catch (IOException ex) {
throw new RuntimeException(ex);
} catch (ParserException ex) {
throw new RuntimeException(ex);
}
}
if (start != null) {
if (event.getStart().before(start)) {
log.info(" before start: " + event.getStart() + " < " + start);
return true;
}
}
if (end != null) {
if (event.getEnd().after(end)) {
log.info(" after end: " + event.getEnd() + " < " + end);
return true;
}
}
return false;
}
@Override
public List<SchedulingResponseItem> queryFreeBusy(CalDavPrincipal principal, String iCalText) {
ICalFormatter.FreeBusyRequest r = formatter.parseFreeBusyRequest(iCalText);
log.info("queryFreeBusy: attendees=" + r.getAttendeeLines().size() + " - " + r.getAttendeeMailtos().size());
List<SchedulingResponseItem> list = new ArrayList<SchedulingResponseItem>();
// For each attendee locate events within the given date range and add them as busy responses
try {
for (String attendeeMailto : r.getAttendeeMailtos()) {
MailboxAddress add = MailboxAddress.parse(attendeeMailto);
CalDavPrincipal attendee = findUserFromMailto(add);
if (attendee == null) {
log.warn("Attendee not found: " + attendeeMailto);
SchedulingResponseItem item = new SchedulingResponseItem(attendeeMailto, ITip.StatusResponse.RS_INVALID_37, null);
list.add(item);
} else {
log.info("Found attendee: " + attendee.getName());
// Now locate events and build an ical response
String ical = buildFreeBusyAttendeeResponse(attendee, r, add.domain, attendeeMailto);
SchedulingResponseItem item = new SchedulingResponseItem(attendeeMailto, ITip.StatusResponse.RS_SUCCESS_20, ical);
list.add(item);
}
}
} catch (NotAuthorizedException ex) {
throw new RuntimeException(ex);
} catch (BadRequestException ex) {
throw new RuntimeException(ex);
}
return list;
}
/**
* Attempt to iterate over the entire users collection, and for each event
* in each user's calendar check if the given user is an attendee, and if
* return it.
*
* Rather inefficient
*
* @param user
* @return
* @throws NotAuthorizedException
* @throws BadRequestException
*/
@Override
public List<ICalResource> findAttendeeResources(CalDavPrincipal user) throws NotAuthorizedException, BadRequestException {
List<ICalResource> list = new ArrayList<ICalResource>();
String host = HttpManager.request().getHostHeader();
Resource rUsersHome = resourceFactory.getResource(host, usersBasePath);
if( rUsersHome instanceof CollectionResource ) {
CollectionResource usersHome = (CollectionResource) rUsersHome;
for( Resource rUser : usersHome.getChildren()) {
if( rUser instanceof CalDavPrincipal) {
CalDavPrincipal p = (CalDavPrincipal) rUser;
for( String href : p.getCalendarHomeSet() ) {
Resource rCalHome = resourceFactory.getResource(host, href);
if( rCalHome instanceof CollectionResource ) {
CollectionResource calHome = (CollectionResource) rCalHome;
for( Resource rCal : calHome.getChildren()) {
if( rCal instanceof CalendarResource) {
CalendarResource cal = (CalendarResource) rCal;
for( Resource rEvent : cal.getChildren()) {
if( rEvent instanceof ICalResource) {
ICalResource event = (ICalResource) rEvent;
if( isAttendeeOf(user, event) ) {
list.add(event);
}
}
}
}
}
}
}
}
}
}
return list;
}
@Override
public String findAttendeeResourcesCTag(CalDavPrincipal attendee) throws NotAuthorizedException, BadRequestException {
Date latest = null;
for (ICalResource r : findAttendeeResources(attendee)) {
Date d = r.getModifiedDate();
if (latest == null || d.after(latest)) {
latest = d;
}
}
if (latest != null) {
return "mod-" + latest.getTime();
} else {
return "na";
}
}
@Override
public String getSchedulingColName() {
return schedulingColName;
}
public void setSchedulingColName(String schedulingColName) {
this.schedulingColName = schedulingColName;
}
@Override
public String getSchedulingInboxColName() {
return inboxName;
}
public void setSchedulingInboxColName(String inboxName) {
this.inboxName = inboxName;
}
@Override
public String getSchedulingOutboxColName() {
return outBoxName;
}
public void setSchedulingOutboxColName(String outBoxName) {
this.outBoxName = outBoxName;
}
/**
* Use the domain portion of the email as the host, and the initial portion
* as the userid. This wont work in systems which require use userid's with
*
* @ symbols
*
* @param attendeeMailto
* @return
*/
private CalDavPrincipal findUserFromMailto(MailboxAddress add) throws NotAuthorizedException, BadRequestException {
String userPath = usersBasePath + add.user;
Resource r = resourceFactory.getResource(add.domain, userPath);
if (r == null) {
log.warn("Failed to find: " + userPath + " in host: " + add.domain);
return null;
} else {
if (r instanceof CalDavPrincipal) {
CalDavPrincipal p = (CalDavPrincipal) r;
return p;
} else {
log.warn("findUserFromMailto: found a resource but it is not a CalDavPrincipal. Is a: " + r.getClass().getCanonicalName());
return null;
}
}
}
public String getUsersBasePath() {
return usersBasePath;
}
public void setUsersBasePath(String usersBasePath) {
this.usersBasePath = usersBasePath;
}
private String buildFreeBusyAttendeeResponse(CalDavPrincipal attendee, ICalFormatter.FreeBusyRequest request, String domain, String attendeeMailto) throws NotAuthorizedException, BadRequestException {
Map<String, String> source = request.getLines();
StringBuilder sb = new StringBuilder();
sb.append("BEGIN:VCALENDAR\n");
sb.append("VERSION:2.0 PRODID:-//milton.io//CalDAV Server//EN\n");
sb.append("METHOD:REPLY\n");
sb.append("BEGIN:VFREEBUSY\n");
// Copy these lines back verbatim
sb.append(source.get("UID")).append("\n");
sb.append(source.get("DTSTAMP")).append("\n");
sb.append(source.get("DTSTART")).append("\n");
sb.append(source.get("DTEND")).append("\n");
sb.append(source.get("ORGANIZER")).append("\n");
// Output the original attendee line
sb.append(request.getAttendeeLines().get(attendeeMailto)).append("\n");
Date start = request.getStart();
Date finish = request.getFinish();
for (String href : attendee.getCalendarHomeSet()) {
if (log.isTraceEnabled()) {
log.trace("Look for calendar home: " + href);
}
Resource rCalHome = resourceFactory.getResource(domain, href);
if (rCalHome instanceof CollectionResource) {
CollectionResource calHome = (CollectionResource) rCalHome;
log.trace("Look for calendars in home");
for (Resource rColCal : calHome.getChildren()) {
if (rColCal instanceof CalendarResource) {
CalendarResource cal = (CalendarResource) rColCal;
List<ICalResource> eventsInRange = findCalendarResources(cal, start, finish);
if (log.isTraceEnabled()) {
log.trace("Process calendar: " + cal.getName() + " events in range=" + eventsInRange.size());
log.trace(" range= " + start + " - " + finish);
}
for (ICalResource event : eventsInRange) {
log.trace("Process event: " + event.getName());
EventResourceImpl er = new EventResourceImpl();
try {
formatter.parseEvent(er, event.getICalData());
} catch (IOException ex) {
throw new RuntimeException(ex);
} catch (ParserException ex) {
throw new RuntimeException(ex);
}
// write the freebusy statement, Eg:
// FREEBUSY;FBTYPE=BUSY:20090602T110000Z/20090602T120000Z
sb.append("FREEBUSY;FBTYPE=BUSY:");
sb.append(formatter.formatDate(er.getStart()));
sb.append("/");
sb.append(formatter.formatDate(er.getEnd()));
sb.append("\n");
}
}
}
} else {
if (rCalHome == null) {
log.warn("Didnt find calendar home: " + href + " in domain: " + domain);
} else {
log.warn("Found a resource at the calendar home address, but it is not a CollectionResource. Is a: " + rCalHome.getClass());
}
}
}
sb.append("END:VFREEBUSY\n");
sb.append("END:VCALENDAR\n");
return sb.toString();
}
/**
* Check if the given user is an attendee of the given event. Just does
* a simple check on the userId portion of the mailto address against
* the name of the principal
*
* @param user
* @param event
* @return
*/
private boolean isAttendeeOf(CalDavPrincipal user, ICalResource event) {
for( String mailto : formatter.parseAttendees(event.getICalData()) ) {
MailboxAddress add = MailboxAddress.parse(mailto);
if( add.user.equals(user.getName())) {
return true;
}
}
return false;
}
}