?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Updated media patches README
[siplcs.git] / src / core / sipe-cal.c
blobc670b6766dc8f8b7f32cf68c44ef1af69c13b5be
1 /**
2 * @file sipe-cal.c
3 *
4 * pidgin-sipe
5 *
6 * Copyright (C) 2010 SIPE Project <http://sipe.sourceforge.net/>
7 * Copyright (C) 2009 pier11 <pier11@operamail.com>
8 *
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25 #ifdef HAVE_CONFIG_H
26 #include "config.h"
27 #endif
28
29 #include <stdlib.h>
30 #include <string.h>
31 #include <time.h>
32
33 #include <glib.h>
34
35 #include "http-conn.h"
36 #include "sipe-backend.h"
37 #include "sipe-buddy.h"
38 #include "sipe-core.h"
39 #include "sipe-core-private.h"
40 #include "sipe-cal.h"
41 #include "sipe-nls.h"
42 #include "sipe-utils.h"
43 #include "sipe-xml.h"
44 #include "sipe.h"
45
46 #define TIME_NULL (time_t)-1
47 #define IS(time) (time != TIME_NULL)
48
49 /*
50 http://msdn.microsoft.com/en-us/library/aa565001.aspx
51
52 <?xml version="1.0"?>
53 <WorkingHours xmlns="http://schemas.microsoft.com/exchange/services/2006/types">
54 <TimeZone>
55 <Bias>480</Bias>
56 <StandardTime>
57 <Bias>0</Bias>
58 <Time>02:00:00</Time>
59 <DayOrder>1</DayOrder>
60 <Month>11</Month>
61 <DayOfWeek>Sunday</DayOfWeek>
62 </StandardTime>
63 <DaylightTime>
64 <Bias>-60</Bias>
65 <Time>02:00:00</Time>
66 <DayOrder>2</DayOrder>
67 <Month>3</Month>
68 <DayOfWeek>Sunday</DayOfWeek>
69 </DaylightTime>
70 </TimeZone>
71 <WorkingPeriodArray>
72 <WorkingPeriod>
73 <DayOfWeek>Monday Tuesday Wednesday Thursday Friday</DayOfWeek>
74 <StartTimeInMinutes>600</StartTimeInMinutes>
75 <EndTimeInMinutes>1140</EndTimeInMinutes>
76 </WorkingPeriod>
77 </WorkingPeriodArray>
78 </WorkingHours>
79
80 Desc:
81 <StandardTime>
82 <Bias>int</Bias>
83 <Time>string</Time>
84 <DayOrder>short</DayOrder>
85 <Month>short</Month>
86 <DayOfWeek>Sunday or Monday or Tuesday or Wednesday or Thursday or Friday or Saturday</DayOfWeek>
87 <Year>string</Year>
88 </StandardTime>
89 */
90
91 struct sipe_cal_std_dst {
92 int bias; /* Ex.: -60 */
93 gchar *time; /* hh:mm:ss, 02:00:00 */
94 int day_order; /* 1..5 */
95 int month; /* 1..12 */
96 gchar *day_of_week; /* Sunday or Monday or Tuesday or Wednesday or Thursday or Friday or Saturday */
97 gchar *year; /* YYYY */
98
99 time_t switch_time;
100 };
101
102 struct sipe_cal_working_hours {
103 int bias; /* Ex.: 480 */
104 struct sipe_cal_std_dst std; /* StandardTime */
105 struct sipe_cal_std_dst dst; /* DaylightTime */
106 gchar *days_of_week; /* Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday separated by space */
107 int start_time; /* 0...1440 */
108 int end_time; /* 0...1440 */
109
110 gchar *tz; /* aggregated timezone string as in TZ environment variable.
111 Ex.: TST+8TDT+7,M3.2.0/02:00:00,M11.1.0/02:00:00 */
112 /** separate simple strings for Windows platform as the proper TZ does not work there.
113 * anyway, dynamic timezones would't work with just TZ
114 */
115 gchar *tz_std; /* Ex.: TST8 */
116 gchar *tz_dst; /* Ex.: TDT7 */
117 };
118
119 /* not for translation, a part of XML Schema definitions */
120 static const char *wday_names[] = {"Sunday",
121 "Monday",
122 "Tuesday",
123 "Wednesday",
124 "Thursday",
125 "Friday",
126 "Saturday"};
127 static int
128 sipe_cal_get_wday(char *wday_name)
129 {
130 int i;
131
132 if (!wday_name) return -1;
133
134 for (i = 0; i < 7; i++) {
135 if (sipe_strequal(wday_names[i], wday_name)) {
136 return i;
137 }
138 }
139
140 return -1;
141 }
142
143 void
144 sipe_cal_event_free(struct sipe_cal_event* cal_event)
145 {
146 if (!cal_event) return;
147
148 g_free(cal_event->subject);
149 g_free(cal_event->location);
150 g_free(cal_event);
151 }
152
153 void
154 sipe_cal_events_free(GSList *cal_events)
155 {
156 GSList *entry = cal_events;
157
158 if (!cal_events) return;
159
160 while (entry) {
161 struct sipe_cal_event *cal_event = entry->data;
162 sipe_cal_event_free(cal_event);
163 entry = entry->next;
164 }
165
166 g_slist_free(cal_events);
167 }
168
169 void
170 sipe_cal_calendar_free(struct sipe_calendar *cal)
171 {
172 g_free(cal->email);
173 g_free(cal->legacy_dn);
174 if (cal->auth) {
175 g_free(cal->auth->domain);
176 g_free(cal->auth->user);
177 g_free(cal->auth->password);
178 }
179 g_free(cal->auth);
180 g_free(cal->as_url);
181 g_free(cal->oof_url);
182 g_free(cal->oab_url);
183 g_free(cal->domino_url);
184 g_free(cal->oof_state);
185 g_free(cal->oof_note);
186 g_free(cal->free_busy);
187 g_free(cal->working_hours_xml_str);
188
189 sipe_cal_events_free(cal->cal_events);
190
191 if (cal->http_conn) {
192 http_conn_free(cal->http_conn);
193 }
194
195 if (cal->http_session) {
196 http_conn_session_free(cal->http_session);
197 }
198
199 g_free(cal);
200 }
201
202 gboolean
203 sipe_cal_calendar_init(struct sipe_core_private *sipe_private,
204 gboolean *has_url)
205 {
206 struct sipe_account_data *sip = SIPE_ACCOUNT_DATA_PRIVATE;
207 if (!sip->cal) {
208 const char *value;
209
210 sip->cal = g_new0(struct sipe_calendar, 1);
211 sip->cal->sipe_private = sipe_private;
212
213 sip->cal->email = g_strdup(sip->email);
214
215 /* user specified a service URL? */
216 value = sipe_backend_setting(SIPE_CORE_PUBLIC, SIPE_SETTING_EMAIL_URL);
217 if (has_url) *has_url = !is_empty(value);
218 if (!is_empty(value)) {
219 sip->cal->as_url = g_strdup(value);
220 sip->cal->oof_url = g_strdup(value);
221 sip->cal->domino_url = g_strdup(value);
222 }
223
224 sip->cal->auth = g_new0(HttpConnAuth, 1);
225 sip->cal->auth->use_negotiate = SIPE_CORE_PUBLIC_FLAG_IS(KRB5);
226
227 /* user specified email login? */
228 value = sipe_backend_setting(SIPE_CORE_PUBLIC, SIPE_SETTING_EMAIL_LOGIN);
229 if (!is_empty(value)) {
230
231 /* user specified email login domain? */
232 const char *tmp = strstr(value, "\\");
233 if (tmp) {
234 sip->cal->auth->domain = g_strndup(value, tmp - value);
235 sip->cal->auth->user = g_strdup(tmp + 1);
236 } else {
237 sip->cal->auth->user = g_strdup(value);
238 }
239 sip->cal->auth->password = g_strdup(sipe_backend_setting(SIPE_CORE_PUBLIC,
240 SIPE_SETTING_EMAIL_PASSWORD));
241
242 } else {
243 /* re-use SIPE credentials */
244 sip->cal->auth->domain = g_strdup(sip->authdomain);
245 sip->cal->auth->user = g_strdup(sip->authuser);
246 sip->cal->auth->password = g_strdup(sip->password);
247 }
248 return TRUE;
249 }
250 return FALSE;
251 }
252
253
254 char *
255 sipe_cal_event_describe(struct sipe_cal_event* cal_event)
256 {
257 GString* str = g_string_new(NULL);
258 const char *status = "";
259
260 switch(cal_event->cal_status) {
261 case SIPE_CAL_FREE: status = "SIPE_CAL_FREE"; break;
262 case SIPE_CAL_TENTATIVE: status = "SIPE_CAL_TENTATIVE"; break;
263 case SIPE_CAL_BUSY: status = "SIPE_CAL_BUSY"; break;
264 case SIPE_CAL_OOF: status = "SIPE_CAL_OOF"; break;
265 case SIPE_CAL_NO_DATA: status = "SIPE_CAL_NO_DATA"; break;
266 }
267
268 g_string_append_printf(str, "\t%s: %s", "start_time",
269 IS(cal_event->start_time) ? asctime(localtime(&cal_event->start_time)) : "\n");
270 g_string_append_printf(str, "\t%s: %s", "end_time ",
271 IS(cal_event->end_time) ? asctime(localtime(&cal_event->end_time)) : "\n");
272 g_string_append_printf(str, "\t%s: %s\n", "cal_status", status);
273 g_string_append_printf(str, "\t%s: %s\n", "subject ", cal_event->subject ? cal_event->subject : "");
274 g_string_append_printf(str, "\t%s: %s\n", "location ", cal_event->location ? cal_event->location : "");
275 g_string_append_printf(str, "\t%s: %s\n", "is_meeting", cal_event->is_meeting ? "TRUE" : "FALSE");
276
277 return g_string_free(str, FALSE);
278 }
279
280 char *
281 sipe_cal_event_hash(struct sipe_cal_event* event)
282 {
283 /* no end_time as it dos not get published */
284 /* no cal_status as it can change on publication */
285 return g_strdup_printf("<%d><%s><%s><%d>",
286 (int)event->start_time,
287 event->subject ? event->subject : "",
288 event->location ? event->location : "",
289 event->is_meeting);
290 }
291
292 #define ENVIRONMENT_TIMEZONE "TZ"
293
294 static gchar *
295 sipe_switch_tz(const char *tz)
296 {
297 gchar *tz_orig;
298
299 tz_orig = g_strdup(g_getenv(ENVIRONMENT_TIMEZONE));
300 g_setenv(ENVIRONMENT_TIMEZONE, tz, TRUE);
301 tzset();
302 return(tz_orig);
303 }
304
305 static void
306 sipe_reset_tz(gchar *tz_orig)
307 {
308 if (tz_orig) {
309 g_setenv(ENVIRONMENT_TIMEZONE, tz_orig, TRUE);
310 g_free(tz_orig);
311 } else {
312 g_unsetenv(ENVIRONMENT_TIMEZONE);
313 }
314 tzset();
315 }
316
317 /**
318 * Converts struct tm to Epoch time_t considering timezone.
319 *
320 * @param tz as defined for TZ environment variable.
321 *
322 * Reference: see timegm(3) - Linux man page
323 */
324 time_t
325 sipe_mktime_tz(struct tm *tm,
326 const char* tz)
327 {
328 time_t ret;
329 gchar *tz_orig;
330
331 tz_orig = sipe_switch_tz(tz);
332 ret = mktime(tm);
333 sipe_reset_tz(tz_orig);
334
335 return ret;
336 }
337
338 /**
339 * Converts Epoch time_t to struct tm considering timezone.
340 *
341 * @param tz as defined for TZ environment variable.
342 *
343 * Reference: see timegm(3) - Linux man page
344 */
345 static struct tm *
346 sipe_localtime_tz(const time_t *time,
347 const char* tz)
348 {
349 struct tm *ret;
350 gchar *tz_orig;
351
352 tz_orig = sipe_switch_tz(tz);
353 ret = localtime(time);
354 sipe_reset_tz(tz_orig);
355
356 return ret;
357 }
358
359 void
360 sipe_cal_free_working_hours(struct sipe_cal_working_hours *wh)
361 {
362 if (!wh) return;
363
364 g_free(wh->std.time);
365 g_free(wh->std.day_of_week);
366 g_free(wh->std.year);
367
368 g_free(wh->dst.time);
369 g_free(wh->dst.day_of_week);
370 g_free(wh->dst.year);
371
372 g_free(wh->days_of_week);
373 g_free(wh->tz);
374 g_free(wh->tz_std);
375 g_free(wh->tz_dst);
376 g_free(wh);
377 }
378
379 /**
380 * Returns time_t of daylight savings time start/end
381 * in the provided timezone or otherwise
382 * (time_t)-1 if no daylight savings time.
383 */
384 static time_t
385 sipe_cal_get_std_dst_time(time_t now,
386 int bias,
387 struct sipe_cal_std_dst* std_dst,
388 struct sipe_cal_std_dst* dst_std)
389 {
390 struct tm switch_tm;
391 time_t res = TIME_NULL;
392 struct tm *gm_now_tm;
393 gchar **time_arr;
394
395 if (std_dst->month == 0) return TIME_NULL;
396
397 gm_now_tm = gmtime(&now);
398 time_arr = g_strsplit(std_dst->time, ":", 0);
399
400 switch_tm.tm_sec = atoi(time_arr[2]);
401 switch_tm.tm_min = atoi(time_arr[1]);
402 switch_tm.tm_hour = atoi(time_arr[0]);
403 g_strfreev(time_arr);
404 switch_tm.tm_mday = std_dst->year ? std_dst->day_order : 1 /* to adjust later */ ;
405 switch_tm.tm_mon = std_dst->month - 1;
406 switch_tm.tm_year = std_dst->year ? atoi(std_dst->year) - 1900 : gm_now_tm->tm_year;
407 switch_tm.tm_isdst = 0;
408 /* to set tm_wday */
409 res = sipe_mktime_tz(&switch_tm, "UTC");
410
411 /* if not dynamic, calculate right tm_mday */
412 if (!std_dst->year) {
413 int switch_wday = sipe_cal_get_wday(std_dst->day_of_week);
414 int needed_month;
415 /* get first desired wday in the month */
416 int delta = switch_wday >= switch_tm.tm_wday ? (switch_wday - switch_tm.tm_wday) : (switch_wday + 7 - switch_tm.tm_wday);
417 switch_tm.tm_mday = 1 + delta;
418 /* try nth order */
419 switch_tm.tm_mday += (std_dst->day_order - 1) * 7;
420 needed_month = switch_tm.tm_mon;
421 /* to set settle date if ahead of allowed month dates */
422 res = sipe_mktime_tz(&switch_tm, "UTC");
423 if (needed_month != switch_tm.tm_mon) {
424 /* moving 1 week back to stay within required month */
425 switch_tm.tm_mday -= 7;
426 /* to fix date again */
427 res = sipe_mktime_tz(&switch_tm, "UTC");
428 }
429 }
430 /* note: bias is taken from "switch to" structure */
431 return res + (bias + dst_std->bias)*60;
432 }
433
434 static void
435 sipe_cal_parse_std_dst(const sipe_xml *xn_std_dst_time,
436 struct sipe_cal_std_dst *std_dst)
437 {
438 const sipe_xml *node;
439 gchar *tmp;
440
441 if (!xn_std_dst_time) return;
442 if (!std_dst) return;
443 /*
444 <StandardTime>
445 <Bias>0</Bias>
446 <Time>02:00:00</Time>
447 <DayOrder>1</DayOrder>
448 <Month>11</Month>
449 <DayOfWeek>Sunday</DayOfWeek>
450 </StandardTime>
451 */
452
453 if ((node = sipe_xml_child(xn_std_dst_time, "Bias"))) {
454 std_dst->bias = atoi(tmp = sipe_xml_data(node));
455 g_free(tmp);
456 }
457
458 if ((node = sipe_xml_child(xn_std_dst_time, "Time"))) {
459 std_dst->time = sipe_xml_data(node);
460 }
461
462 if ((node = sipe_xml_child(xn_std_dst_time, "DayOrder"))) {
463 std_dst->day_order = atoi(tmp = sipe_xml_data(node));
464 g_free(tmp);
465 }
466
467 if ((node = sipe_xml_child(xn_std_dst_time, "Month"))) {
468 std_dst->month = atoi(tmp = sipe_xml_data(node));
469 g_free(tmp);
470 }
471
472 if ((node = sipe_xml_child(xn_std_dst_time, "DayOfWeek"))) {
473 std_dst->day_of_week = sipe_xml_data(node);
474 }
475
476 if ((node = sipe_xml_child(xn_std_dst_time, "Year"))) {
477 std_dst->year = sipe_xml_data(node);
478 }
479 }
480
481 void
482 sipe_cal_parse_working_hours(const sipe_xml *xn_working_hours,
483 struct sipe_buddy *buddy)
484 {
485 const sipe_xml *xn_bias;
486 const sipe_xml *xn_timezone;
487 const sipe_xml *xn_working_period;
488 const sipe_xml *xn_standard_time;
489 const sipe_xml *xn_daylight_time;
490 gchar *tmp;
491 time_t now = time(NULL);
492 struct sipe_cal_std_dst* std;
493 struct sipe_cal_std_dst* dst;
494
495 if (!xn_working_hours) return;
496 /*
497 <WorkingHours xmlns="http://schemas.microsoft.com/exchange/services/2006/types">
498 <TimeZone>
499 <Bias>480</Bias>
500 ...
501 </TimeZone>
502 <WorkingPeriodArray>
503 <WorkingPeriod>
504 <DayOfWeek>Monday Tuesday Wednesday Thursday Friday</DayOfWeek>
505 <StartTimeInMinutes>600</StartTimeInMinutes>
506 <EndTimeInMinutes>1140</EndTimeInMinutes>
507 </WorkingPeriod>
508 </WorkingPeriodArray>
509 </WorkingHours>
510 */
511 sipe_cal_free_working_hours(buddy->cal_working_hours);
512 buddy->cal_working_hours = g_new0(struct sipe_cal_working_hours, 1);
513
514 xn_timezone = sipe_xml_child(xn_working_hours, "TimeZone");
515 xn_bias = sipe_xml_child(xn_timezone, "Bias");
516 if (xn_bias) {
517 buddy->cal_working_hours->bias = atoi(tmp = sipe_xml_data(xn_bias));
518 g_free(tmp);
519 }
520
521 xn_standard_time = sipe_xml_child(xn_timezone, "StandardTime");
522 xn_daylight_time = sipe_xml_child(xn_timezone, "DaylightTime");
523
524 std = &((*buddy->cal_working_hours).std);
525 dst = &((*buddy->cal_working_hours).dst);
526 sipe_cal_parse_std_dst(xn_standard_time, std);
527 sipe_cal_parse_std_dst(xn_daylight_time, dst);
528
529 xn_working_period = sipe_xml_child(xn_working_hours, "WorkingPeriodArray/WorkingPeriod");
530 if (xn_working_period) {
531 buddy->cal_working_hours->days_of_week =
532 sipe_xml_data(sipe_xml_child(xn_working_period, "DayOfWeek"));
533
534 buddy->cal_working_hours->start_time =
535 atoi(tmp = sipe_xml_data(sipe_xml_child(xn_working_period, "StartTimeInMinutes")));
536 g_free(tmp);
537
538 buddy->cal_working_hours->end_time =
539 atoi(tmp = sipe_xml_data(sipe_xml_child(xn_working_period, "EndTimeInMinutes")));
540 g_free(tmp);
541 }
542
543 std->switch_time = sipe_cal_get_std_dst_time(now, buddy->cal_working_hours->bias, std, dst);
544 dst->switch_time = sipe_cal_get_std_dst_time(now, buddy->cal_working_hours->bias, dst, std);
545
546 /* TST8TDT7,M3.2.0/02:00:00,M11.1.0/02:00:00 */
547 buddy->cal_working_hours->tz =
548 g_strdup_printf("TST%dTDT%d,M%d.%d.%d/%s,M%d.%d.%d/%s",
549 (buddy->cal_working_hours->bias + buddy->cal_working_hours->std.bias) / 60,
550 (buddy->cal_working_hours->bias + buddy->cal_working_hours->dst.bias) / 60,
551
552 buddy->cal_working_hours->dst.month,
553 buddy->cal_working_hours->dst.day_order,
554 sipe_cal_get_wday(buddy->cal_working_hours->dst.day_of_week),
555 buddy->cal_working_hours->dst.time,
556
557 buddy->cal_working_hours->std.month,
558 buddy->cal_working_hours->std.day_order,
559 sipe_cal_get_wday(buddy->cal_working_hours->std.day_of_week),
560 buddy->cal_working_hours->std.time
561 );
562 /* TST8 */
563 buddy->cal_working_hours->tz_std =
564 g_strdup_printf("TST%d",
565 (buddy->cal_working_hours->bias + buddy->cal_working_hours->std.bias) / 60);
566 /* TDT7 */
567 buddy->cal_working_hours->tz_dst =
568 g_strdup_printf("TDT%d",
569 (buddy->cal_working_hours->bias + buddy->cal_working_hours->dst.bias) / 60);
570 }
571
572 struct sipe_cal_event*
573 sipe_cal_get_event(GSList *cal_events,
574 time_t time_in_question)
575 {
576 GSList *entry = cal_events;
577 struct sipe_cal_event* cal_event;
578 struct sipe_cal_event* res = NULL;
579
580 if (!cal_events || !IS(time_in_question)) return NULL;
581
582 while (entry) {
583 cal_event = entry->data;
584 /* event is in the past or in the future */
585 if (cal_event->start_time > time_in_question ||
586 cal_event->end_time <= time_in_question)
587 {
588 entry = entry->next;
589 continue;
590 }
591
592 if (!res) {
593 res = cal_event;
594 } else {
595 int res_status = (res->cal_status == SIPE_CAL_NO_DATA) ? -1 : res->cal_status;
596 int cal_status = (cal_event->cal_status == SIPE_CAL_NO_DATA) ? -1 : cal_event->cal_status;
597 if (res_status < cal_status) {
598 res = cal_event;
599 }
600 }
601 entry = entry->next;
602 }
603 return res;
604 }
605
606 static int
607 sipe_cal_get_status0(const gchar *free_busy,
608 time_t cal_start,
609 int granularity,
610 time_t time_in_question,
611 int *index)
612 {
613 int res = SIPE_CAL_NO_DATA;
614 int shift;
615 time_t cal_end = cal_start + strlen(free_busy)*granularity*60 - 1;
616
617 if (!(time_in_question >= cal_start && time_in_question <= cal_end)) return res;
618
619 shift = (time_in_question - cal_start) / (granularity*60);
620 if (index) {
621 *index = shift;
622 }
623
624 res = free_busy[shift] - '0';
625
626 return res;
627 }
628
629 /**
630 * Returns time when current calendar state started
631 */
632 static time_t
633 sipe_cal_get_since_time(const gchar *free_busy,
634 time_t calStart,
635 int granularity,
636 int index,
637 int current_state)
638 {
639 int i;
640
641 if ((index < 0) || ((size_t)(index + 1) > strlen(free_busy))) return 0;
642
643 for (i = index; i >= 0; i--) {
644 int temp_status = free_busy[i] - '0';
645
646 if (current_state != temp_status) {
647 return calStart + (i + 1)*granularity*60;
648 }
649
650 if (i == 0) return calStart;
651 }
652
653 return 0;
654 }
655 static char*
656 sipe_cal_get_free_busy(struct sipe_buddy *buddy);
657
658 int
659 sipe_cal_get_status(struct sipe_buddy *buddy,
660 time_t time_in_question,
661 time_t *since)
662 {
663 time_t cal_start;
664 const char* free_busy;
665 int ret = SIPE_CAL_NO_DATA;
666 time_t state_since;
667 int index;
668
669 if (!buddy || !buddy->cal_start_time || !buddy->cal_granularity) {
670 SIPE_DEBUG_INFO("sipe_cal_get_status: no calendar data1 for %s, exiting",
671 buddy ? (buddy->name ? buddy->name : "") : "");
672 return SIPE_CAL_NO_DATA;
673 }
674
675 if (!(free_busy = sipe_cal_get_free_busy(buddy))) {
676 SIPE_DEBUG_INFO("sipe_cal_get_status: no calendar data2 for %s, exiting", buddy->name);
677 return SIPE_CAL_NO_DATA;
678 }
679 SIPE_DEBUG_INFO("sipe_cal_get_description: buddy->cal_free_busy=\n%s", free_busy);
680
681 cal_start = sipe_utils_str_to_time(buddy->cal_start_time);
682
683 ret = sipe_cal_get_status0(free_busy,
684 cal_start,
685 buddy->cal_granularity,
686 time_in_question,
687 &index);
688 state_since = sipe_cal_get_since_time(free_busy,
689 cal_start,
690 buddy->cal_granularity,
691 index,
692 ret);
693
694 if (since) *since = state_since;
695 return ret;
696 }
697
698 static time_t
699 sipe_cal_get_switch_time(const gchar *free_busy,
700 time_t calStart,
701 int granularity,
702 int index,
703 int current_state,
704 int *to_state)
705 {
706 size_t i;
707 time_t ret = TIME_NULL;
708
709 if ((index < 0) || ((size_t) (index + 1) > strlen(free_busy))) {
710 *to_state = SIPE_CAL_NO_DATA;
711 return ret;
712 }
713
714 for (i = index + 1; i < strlen(free_busy); i++) {
715 int temp_status = free_busy[i] - '0';
716
717 if (current_state != temp_status) {
718 *to_state = temp_status;
719 return calStart + i*granularity*60;
720 }
721 }
722
723 return ret;
724 }
725
726 static const char*
727 sipe_cal_get_tz(struct sipe_cal_working_hours *wh,
728 time_t time_in_question)
729 {
730 time_t dst_switch_time = (*wh).dst.switch_time;
731 time_t std_switch_time = (*wh).std.switch_time;
732 gboolean is_dst = FALSE;
733
734 /* No daylight savings */
735 if (dst_switch_time == TIME_NULL) {
736 return wh->tz_std;
737 }
738
739 if (dst_switch_time < std_switch_time) { /* North hemosphere - Europe, US */
740 if (time_in_question >= dst_switch_time && time_in_question < std_switch_time) {
741 is_dst = TRUE;
742 }
743 } else { /* South hemisphere - Australia */
744 if (time_in_question >= dst_switch_time || time_in_question < std_switch_time) {
745 is_dst = TRUE;
746 }
747 }
748
749 if (is_dst) {
750 return wh->tz_dst;
751 } else {
752 return wh->tz_std;
753 }
754 }
755
756 static time_t
757 sipe_cal_mktime_of_day(struct tm *sample_today_tm,
758 const int shift_minutes,
759 const char *tz)
760 {
761 sample_today_tm->tm_sec = 0;
762 sample_today_tm->tm_min = shift_minutes % 60;
763 sample_today_tm->tm_hour = shift_minutes / 60;
764
765 return sipe_mktime_tz(sample_today_tm, tz);
766 }
767
768 /**
769 * Returns work day start and end in Epoch time
770 * considering the initial values are provided
771 * in contact's local time zone.
772 */
773 static void
774 sipe_cal_get_today_work_hours(struct sipe_cal_working_hours *wh,
775 time_t *start,
776 time_t *end,
777 time_t *next_start)
778 {
779 time_t now = time(NULL);
780 const char *tz = sipe_cal_get_tz(wh, now);
781 struct tm *remote_now_tm = sipe_localtime_tz(&now, tz);
782
783 if (!strstr(wh->days_of_week, wday_names[remote_now_tm->tm_wday])) { /* not a work day */
784 *start = TIME_NULL;
785 *end = TIME_NULL;
786 *next_start = TIME_NULL;
787 return;
788 }
789
790 *end = sipe_cal_mktime_of_day(remote_now_tm, wh->end_time, tz);
791
792 if (now < *end) {
793 *start = sipe_cal_mktime_of_day(remote_now_tm, wh->start_time, tz);
794 *next_start = TIME_NULL;
795 } else { /* calculate start of tomorrow's work day if any */
796 time_t tom = now + 24*60*60;
797 struct tm *remote_tom_tm = sipe_localtime_tz(&tom, sipe_cal_get_tz(wh, tom));
798
799 if (!strstr(wh->days_of_week, wday_names[remote_tom_tm->tm_wday])) { /* not a work day */
800 *next_start = TIME_NULL;
801 }
802
803 *next_start = sipe_cal_mktime_of_day(remote_tom_tm, wh->start_time, sipe_cal_get_tz(wh, tom));
804 *start = TIME_NULL;
805 }
806 }
807
808 static int
809 sipe_cal_is_in_work_hours(const time_t time_in_question,
810 const time_t start,
811 const time_t end)
812 {
813 return !((time_in_question >= end) || (IS(start) && time_in_question < start));
814 }
815
816 /**
817 * Returns time closest to now. Choses only from times ahead of now.
818 * Returns TIME_NULL otherwise.
819 */
820 static time_t
821 sipe_cal_get_until(const time_t now,
822 const time_t switch_time,
823 const time_t start,
824 const time_t end,
825 const time_t next_start)
826 {
827 time_t ret = TIME_NULL;
828 int min_diff = now - ret;
829
830 if (IS(switch_time) && switch_time > now && (switch_time - now) < min_diff) {
831 min_diff = switch_time - now;
832 ret = switch_time;
833 }
834 if (IS(start) && start > now && (start - now) < min_diff) {
835 min_diff = start - now;
836 ret = start;
837 }
838 if (IS(end) && end > now && (end - now) < min_diff) {
839 min_diff = end - now;
840 ret = end;
841 }
842 if (IS(next_start) && next_start > now && (next_start - now) < min_diff) {
843 min_diff = next_start - now;
844 ret = next_start;
845 }
846 return ret;
847 }
848
849 static char*
850 sipe_cal_get_free_busy(struct sipe_buddy *buddy)
851 {
852 /* do lazy decode if necessary */
853 if (!buddy->cal_free_busy && buddy->cal_free_busy_base64) {
854 gsize cal_dec64_len;
855 guchar *cal_dec64;
856 gsize i;
857 int j = 0;
858
859 cal_dec64 = g_base64_decode(buddy->cal_free_busy_base64, &cal_dec64_len);
860
861 buddy->cal_free_busy = g_malloc0(cal_dec64_len * 4 + 1);
862 /*
863 http://msdn.microsoft.com/en-us/library/dd941537%28office.13%29.aspx
864 00, Free (Fr)
865 01, Tentative (Te)
866 10, Busy (Bu)
867 11, Out of facility (Oo)
868
869 http://msdn.microsoft.com/en-us/library/aa566048.aspx
870 0 Free
871 1 Tentative
872 2 Busy
873 3 Out of Office (OOF)
874 4 No data
875 */
876 for (i = 0; i < cal_dec64_len; i++) {
877 #define TWO_BIT_MASK 0x03
878 char tmp = cal_dec64[i];
879 buddy->cal_free_busy[j++] = (tmp & TWO_BIT_MASK) + '0';
880 buddy->cal_free_busy[j++] = ((tmp >> 2) & TWO_BIT_MASK) + '0';
881 buddy->cal_free_busy[j++] = ((tmp >> 4) & TWO_BIT_MASK) + '0';
882 buddy->cal_free_busy[j++] = ((tmp >> 6) & TWO_BIT_MASK) + '0';
883 }
884 buddy->cal_free_busy[j++] = '\0';
885 g_free(cal_dec64);
886 }
887
888 return buddy->cal_free_busy;
889 }
890
891 char *
892 sipe_cal_get_freebusy_base64(const char* freebusy_hex)
893 {
894 guint i = 0;
895 guint j = 0;
896 guint shift_factor = 0;
897 guint len, res_len;
898 guchar *res;
899 gchar *res_base64;
900
901 if (!freebusy_hex) return NULL;
902
903 len = strlen(freebusy_hex);
904 res_len = len / 4 + 1;
905 res = g_malloc0(res_len);
906 while (i < len) {
907 res[j] |= (freebusy_hex[i++] - '0') << shift_factor;
908 shift_factor += 2;
909 if (shift_factor == 8) {
910 shift_factor = 0;
911 j++;
912 }
913 }
914
915 res_base64 = g_base64_encode(res, shift_factor ? res_len : res_len - 1);
916 g_free(res);
917 return res_base64;
918 }
919
920 char *
921 sipe_cal_get_description(struct sipe_buddy *buddy)
922 {
923 time_t cal_start;
924 time_t cal_end;
925 int current_cal_state;
926 time_t now = time(NULL);
927 time_t start = TIME_NULL;
928 time_t end = TIME_NULL;
929 time_t next_start = TIME_NULL;
930 time_t switch_time;
931 int to_state = SIPE_CAL_NO_DATA;
932 time_t until = TIME_NULL;
933 int index = 0;
934 gboolean has_working_hours = (buddy->cal_working_hours != NULL);
935 const char *free_busy;
936 const char *cal_states[] = {_("Free"),
937 _("Tentative"),
938 _("Busy"),
939 _("Out of office"),
940 _("No data")};
941
942 if (buddy->cal_granularity != 15) {
943 SIPE_DEBUG_INFO("sipe_cal_get_description: granularity %d is unsupported, exiting.", buddy->cal_granularity);
944 return NULL;
945 }
946
947 /* to lazy load if needed */
948 free_busy = sipe_cal_get_free_busy(buddy);
949 SIPE_DEBUG_INFO("sipe_cal_get_description: buddy->cal_free_busy=\n%s", free_busy ? free_busy : "");
950
951 if (!buddy->cal_free_busy || !buddy->cal_granularity || !buddy->cal_start_time) {
952 SIPE_DEBUG_INFO_NOFORMAT("sipe_cal_get_description: no calendar data, exiting");
953 return NULL;
954 }
955
956 cal_start = sipe_utils_str_to_time(buddy->cal_start_time);
957 cal_end = cal_start + 60 * (buddy->cal_granularity) * strlen(buddy->cal_free_busy);
958
959 current_cal_state = sipe_cal_get_status0(free_busy, cal_start, buddy->cal_granularity, time(NULL), &index);
960 if (current_cal_state == SIPE_CAL_NO_DATA) {
961 SIPE_DEBUG_INFO_NOFORMAT("sipe_cal_get_description: calendar is undefined for present moment, exiting.");
962 return NULL;
963 }
964
965 switch_time = sipe_cal_get_switch_time(free_busy, cal_start, buddy->cal_granularity, index, current_cal_state, &to_state);
966
967 SIPE_DEBUG_INFO_NOFORMAT("\n* Calendar *");
968 if (buddy->cal_working_hours) {
969 sipe_cal_get_today_work_hours(buddy->cal_working_hours, &start, &end, &next_start);
970
971 SIPE_DEBUG_INFO("Remote now timezone : %s", sipe_cal_get_tz(buddy->cal_working_hours, now));
972 SIPE_DEBUG_INFO("std.switch_time(GMT): %s",
973 IS((*buddy->cal_working_hours).std.switch_time) ? asctime(gmtime(&((*buddy->cal_working_hours).std.switch_time))) : "");
974 SIPE_DEBUG_INFO("dst.switch_time(GMT): %s",
975 IS((*buddy->cal_working_hours).dst.switch_time) ? asctime(gmtime(&((*buddy->cal_working_hours).dst.switch_time))) : "");
976 SIPE_DEBUG_INFO("Remote now time : %s",
977 asctime(sipe_localtime_tz(&now, sipe_cal_get_tz(buddy->cal_working_hours, now))));
978 SIPE_DEBUG_INFO("Remote start time : %s",
979 IS(start) ? asctime(sipe_localtime_tz(&start, sipe_cal_get_tz(buddy->cal_working_hours, start))) : "");
980 SIPE_DEBUG_INFO("Remote end time : %s",
981 IS(end) ? asctime(sipe_localtime_tz(&end, sipe_cal_get_tz(buddy->cal_working_hours, end))) : "");
982 SIPE_DEBUG_INFO("Rem. next_start time: %s",
983 IS(next_start) ? asctime(sipe_localtime_tz(&next_start, sipe_cal_get_tz(buddy->cal_working_hours, next_start))) : "");
984 SIPE_DEBUG_INFO("Remote switch time : %s",
985 IS(switch_time) ? asctime(sipe_localtime_tz(&switch_time, sipe_cal_get_tz(buddy->cal_working_hours, switch_time))) : "");
986 } else {
987 SIPE_DEBUG_INFO("Local now time : %s",
988 asctime(localtime(&now)));
989 SIPE_DEBUG_INFO("Local switch time : %s",
990 IS(switch_time) ? asctime(localtime(&switch_time)) : "");
991 }
992 SIPE_DEBUG_INFO("Calendar End (GMT) : %s", asctime(gmtime(&cal_end)));
993 SIPE_DEBUG_INFO("current cal state : %s", cal_states[current_cal_state]);
994 SIPE_DEBUG_INFO("switch cal state : %s", cal_states[to_state] );
995
996 /* Calendar: string calculations */
997
998 /*
999 ALGORITHM (don't delete)
1000 (c)2009,2010 pier11 <pier11@operamail.com>
1001
1002 SOD = Start of Work Day
1003 EOD = End of Work Day
1004 NSOD = Start of tomorrow's Work Day
1005 SW = Calendar status switch time
1006
1007 if current_cal_state == Free
1008 until = min_t of SOD, EOD, NSOD, SW (min_t(x) = min(x-now) where x>now only)
1009 else
1010 until = SW
1011
1012 if (!until && (cal_period_end > now + 8H))
1013 until = cal_period_end
1014
1015 if (!until)
1016 return "Currently %", current_cal_state
1017
1018 if (until - now > 8H)
1019 if (current_cal_state == Free && (work_hours && !in work_hours(now)))
1020 return "Outside of working hours for next 8 hours"
1021 else
1022 return "%s for next 8 hours", current_cal_state
1023
1024 if (current_cal_state == Free)
1025 if (work_hours && until !in work_hours(now))
1026 "Not working"
1027 else
1028 "%s", current_cal_state
1029 " until %.2d:%.2d", until
1030 else
1031 "Currently %", current_cal_state
1032 if (work_hours && until !in work_hours(until))
1033 ". Outside of working hours at at %.2d:%.2d", until
1034 else
1035 ". %s at %.2d:%.2d", to_state, until
1036 */
1037
1038 if (current_cal_state < 1) { /* Free */
1039 until = sipe_cal_get_until(now, switch_time, start, end, next_start);
1040 } else {
1041 until = switch_time;
1042 }
1043
1044 if (!IS(until) && (cal_end - now > 8*60*60))
1045 until = cal_end;
1046
1047 if (!IS(until)) {
1048 return g_strdup_printf(_("Currently %s"), cal_states[current_cal_state]);
1049 }
1050
1051 if (until - now > 8*60*60) {
1052 /* Free & outside work hours */
1053 if (current_cal_state < 1 && has_working_hours && !sipe_cal_is_in_work_hours(now, start, end)) {
1054 return g_strdup(_("Outside of working hours for next 8 hours"));
1055 } else {
1056 return g_strdup_printf(_("%s for next 8 hours"), cal_states[current_cal_state]);
1057 }
1058 }
1059
1060 if (current_cal_state < 1) { /* Free */
1061 const char *tmp;
1062 struct tm *until_tm = localtime(&until);
1063
1064 if (has_working_hours && !sipe_cal_is_in_work_hours(now, start, end)) {
1065 tmp = _("Not working");
1066 } else {
1067 tmp = cal_states[current_cal_state];
1068 }
1069 return g_strdup_printf(_("%s until %.2d:%.2d"), tmp, until_tm->tm_hour, until_tm->tm_min);
1070 } else { /* Tentative or Busy or OOF */
1071 char *tmp;
1072 char *res;
1073 struct tm *until_tm = localtime(&until);
1074
1075 tmp = g_strdup_printf(_("Currently %s"), cal_states[current_cal_state]);
1076 if (has_working_hours && !sipe_cal_is_in_work_hours(until, start, end)) {
1077 res = g_strdup_printf(_("%s. Outside of working hours at %.2d:%.2d"),
1078 tmp, until_tm->tm_hour, until_tm->tm_min);
1079 g_free(tmp);
1080 return res;
1081 } else {
1082 res = g_strdup_printf(_("%s. %s at %.2d:%.2d"), tmp, cal_states[to_state], until_tm->tm_hour, until_tm->tm_min);
1083 g_free(tmp);
1084 return res;
1085 }
1086 }
1087 /* End of - Calendar: string calculations */
1088 }
1089
1090 /*
1091 Local Variables:
1092 mode: c
1093 c-file-style: "bsd"
1094 indent-tabs-mode: t
1095 tab-width: 8
1096 End:
1097 */
A third-party Pidgin plugin for Microsoft LCS/OCS