summaryrefslogtreecommitdiff
path: root/timers.c
blob: 9e80b4942dcc73aa5af7ca26a9a6673e5bd99b0d (plain)
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
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
/*
 * timers.c: Timer handling
 *
 * See the main source file 'vdr.c' for copyright information and
 * how to reach the author.
 *
 * $Id: timers.c 1.34 2005/07/30 13:03:51 kls Exp $
 */

#include "timers.h"
#include <ctype.h>
#include "channels.h"
#include "i18n.h"
#include "remote.h"

// IMPORTANT NOTE: in the 'sscanf()' calls there is a blank after the '%d'
// format characters in order to allow any number of blanks after a numeric
// value!

// -- cTimer -----------------------------------------------------------------

cTimer::cTimer(bool Instant, bool Pause)
{
  startTime = stopTime = 0;
  recording = pending = inVpsMargin = false;
  flags = tfNone;
  if (Instant)
     SetFlags(tfActive | tfInstant);
  channel = Channels.GetByNumber(cDevice::CurrentChannel());
  time_t t = time(NULL);
  struct tm tm_r;
  struct tm *now = localtime_r(&t, &tm_r);
  day = SetTime(t, 0);
  weekdays = 0;
  start = now->tm_hour * 100 + now->tm_min;
  stop = now->tm_hour * 60 + now->tm_min + Setup.InstantRecordTime;
  stop = (stop / 60) * 100 + (stop % 60);
  if (stop >= 2400)
     stop -= 2400;
  priority = Pause ? Setup.PausePriority : Setup.DefaultPriority;
  lifetime = Pause ? Setup.PauseLifetime : Setup.DefaultLifetime;
  *file = 0;
  summary = NULL;
  event = NULL;
  if (Instant && channel)
     snprintf(file, sizeof(file), "%s%s", Setup.MarkInstantRecord ? "@" : "", *Setup.NameInstantRecord ? Setup.NameInstantRecord : channel->Name());
}

cTimer::cTimer(const cEvent *Event)
{
  startTime = stopTime = 0;
  recording = pending = inVpsMargin = false;
  flags = tfActive;
  if (Event->Vps() && Setup.UseVps)
     SetFlags(tfVps);
  channel = Channels.GetByChannelID(Event->ChannelID(), true);
  time_t tstart = (flags & tfVps) ? Event->Vps() : Event->StartTime();
  time_t tstop = tstart + Event->Duration();
  if (!(HasFlags(tfVps))) {
     tstop  += Setup.MarginStop * 60;
     tstart -= Setup.MarginStart * 60;
     }
  struct tm tm_r;
  struct tm *time = localtime_r(&tstart, &tm_r);
  day = SetTime(tstart, 0);
  weekdays = 0;
  start = time->tm_hour * 100 + time->tm_min;
  time = localtime_r(&tstop, &tm_r);
  stop = time->tm_hour * 100 + time->tm_min;
  if (stop >= 2400)
     stop -= 2400;
  priority = Setup.DefaultPriority;
  lifetime = Setup.DefaultLifetime;
  *file = 0;
  const char *Title = Event->Title();
  if (!isempty(Title))
     strn0cpy(file, Event->Title(), sizeof(file));
  summary = NULL;
  event = Event;
}

cTimer::~cTimer()
{
  free(summary);
}

cTimer& cTimer::operator= (const cTimer &Timer)
{
  memcpy(this, &Timer, sizeof(*this));
  if (summary)
     summary = strdup(summary);
  event = NULL;
  return *this;
}

int cTimer::Compare(const cListObject &ListObject) const
{
  cTimer *ti = (cTimer *)&ListObject;
  time_t t1 = StartTime();
  time_t t2 = ti->StartTime();
  int r = t1 - t2;
  if (r == 0)
     r = ti->priority - priority;
  return r;
}

cString cTimer::ToText(bool UseChannelID)
{
  char *buffer;
  strreplace(file, ':', '|');
  strreplace(summary, '\n', '|');
  asprintf(&buffer, "%d:%s:%s:%04d:%04d:%d:%d:%s:%s\n", flags, UseChannelID ? *Channel()->GetChannelID().ToString() : *itoa(Channel()->Number()), *PrintDay(day, weekdays), start, stop, priority, lifetime, file, summary ? summary : "");
  strreplace(summary, '|', '\n');
  strreplace(file, '|', ':');
  return cString(buffer, true);
}

cString cTimer::ToDescr(void) const
{
  char *buffer;
  asprintf(&buffer, "%d (%d %04d-%04d '%s')", Index() + 1, Channel()->Number(), start, stop, file);
  return cString(buffer, true);
}

int cTimer::TimeToInt(int t)
{
  return (t / 100 * 60 + t % 100) * 60;
}

bool cTimer::ParseDay(const char *s, time_t &Day, int &WeekDays)
{
  // possible formats are:
  // 19
  // 2005-03-19
  // MTWTFSS
  // MTWTFSS@19
  // MTWTFSS@2005-03-19

  Day = 0;
  WeekDays = 0;
  s = skipspace(s);
  if (!*s)
     return false;
  const char *a = strchr(s, '@');
  const char *d = a ? a + 1 : isdigit(*s) ? s : NULL;
  if (d) {
     if (strlen(d) == 10) {
        struct tm tm_r;
        if (3 == sscanf(d, "%d-%d-%d", &tm_r.tm_year, &tm_r.tm_mon, &tm_r.tm_mday)) {
           tm_r.tm_year -= 1900;
           tm_r.tm_mon--;
           tm_r.tm_hour = tm_r.tm_min = tm_r.tm_sec = 0;
           tm_r.tm_isdst = -1; // makes sure mktime() will determine the correct DST setting
           Day = mktime(&tm_r);
           }
        else
           return false;
        }
     else {
        // handle "day of month" for compatibility with older versions:
        char *tail = NULL;
        int day = strtol(d, &tail, 10);
        if (tail && *tail || day < 1 || day > 31)
           return false;
        time_t t = time(NULL);
        int DaysToCheck = 61; // 61 to handle months with 31/30/31
        for (int i = -1; i <= DaysToCheck; i++) {
            time_t t0 = IncDay(t, i);
            if (GetMDay(t0) == day) {
               Day = SetTime(t0, 0);
               break;
               }
            }
        }
     }
  if (a || !isdigit(*s)) {
     if ((a && a - s == 7) || strlen(s) == 7) {
        for (const char *p = s + 6; p >= s; p--) {
            WeekDays <<= 1;
            WeekDays |= (*p != '-');
            }
        }
     else
        return false;
     }
  return true;
}

cString cTimer::PrintDay(time_t Day, int WeekDays)
{
#define DAYBUFFERSIZE 32
  char buffer[DAYBUFFERSIZE];
  char *b = buffer;
  if (WeekDays) {
     const char *w = tr("MTWTFSS");
     while (*w) {
           *b++ = (WeekDays & 1) ? *w : '-';
           WeekDays >>= 1;
           w++;
           }
     if (Day)
        *b++ = '@';
     }
  if (Day) {
     struct tm tm_r;
     localtime_r(&Day, &tm_r);
     b += strftime(b, DAYBUFFERSIZE - (b - buffer), "%Y-%m-%d", &tm_r);
     }
  *b = 0;
  return buffer;
}

cString cTimer::PrintFirstDay(void) const
{
  if (weekdays) {
     cString s = PrintDay(day, weekdays);
     if (strlen(s) == 18)
        return *s + 8;
     }
  return ""; // not NULL, so the caller can always use the result
}

bool cTimer::Parse(const char *s)
{
  char *channelbuffer = NULL;
  char *daybuffer = NULL;
  char *filebuffer = NULL;
  free(summary);
  summary = NULL;
  //XXX Apparently sscanf() doesn't work correctly if the last %a argument
  //XXX results in an empty string (this first occured when the EIT gathering
  //XXX was put into a separate thread - don't know why this happens...
  //XXX As a cure we copy the original string and add a blank.
  //XXX If anybody can shed some light on why sscanf() failes here, I'd love
  //XXX to hear about that!
  char *s2 = NULL;
  int l2 = strlen(s);
  while (l2 > 0 && isspace(s[l2 - 1]))
        l2--;
  if (s[l2 - 1] == ':') {
     s2 = MALLOC(char, l2 + 3);
     strcat(strn0cpy(s2, s, l2 + 1), " \n");
     s = s2;
     }
  bool result = false;
  if (8 <= sscanf(s, "%d :%a[^:]:%a[^:]:%d :%d :%d :%d :%a[^:\n]:%a[^\n]", &flags, &channelbuffer, &daybuffer, &start, &stop, &priority, &lifetime, &filebuffer, &summary)) {
     if (summary && !*skipspace(summary)) {
        free(summary);
        summary = NULL;
        }
     //TODO add more plausibility checks
     result = ParseDay(daybuffer, day, weekdays);
     strn0cpy(file, filebuffer, MaxFileName);
     strreplace(file, '|', ':');
     strreplace(summary, '|', '\n');
     if (isnumber(channelbuffer))
        channel = Channels.GetByNumber(atoi(channelbuffer));
     else
        channel = Channels.GetByChannelID(tChannelID::FromString(channelbuffer), true, true);
     if (!channel) {
        esyslog("ERROR: channel %s not defined", channelbuffer);
        result = false;
        }
     }
  free(channelbuffer);
  free(daybuffer);
  free(filebuffer);
  free(s2);
  return result;
}

bool cTimer::Save(FILE *f)
{
  return fprintf(f, "%s", *ToText(true)) > 0;
}

bool cTimer::IsSingleEvent(void) const
{
  return !weekdays;
}

int cTimer::GetMDay(time_t t)
{
  struct tm tm_r;
  return localtime_r(&t, &tm_r)->tm_mday;
}

int cTimer::GetWDay(time_t t)
{
  struct tm tm_r;
  int weekday = localtime_r(&t, &tm_r)->tm_wday;
  return weekday == 0 ? 6 : weekday - 1; // we start with monday==0!
}

bool cTimer::DayMatches(time_t t) const
{
  return IsSingleEvent() ? SetTime(t, 0) == day : (weekdays & (1 << GetWDay(t))) != 0;
}

time_t cTimer::IncDay(time_t t, int Days)
{
  struct tm tm_r;
  tm tm = *localtime_r(&t, &tm_r);
  tm.tm_mday += Days; // now tm_mday may be out of its valid range
  int h = tm.tm_hour; // save original hour to compensate for DST change
  tm.tm_isdst = -1;   // makes sure mktime() will determine the correct DST setting
  t = mktime(&tm);    // normalize all values
  tm.tm_hour = h;     // compensate for DST change
  return mktime(&tm); // calculate final result
}

time_t cTimer::SetTime(time_t t, int SecondsFromMidnight)
{
  struct tm tm_r;
  tm tm = *localtime_r(&t, &tm_r);
  tm.tm_hour = SecondsFromMidnight / 3600;
  tm.tm_min = (SecondsFromMidnight % 3600) / 60;
  tm.tm_sec =  SecondsFromMidnight % 60;
  tm.tm_isdst = -1; // makes sure mktime() will determine the correct DST setting
  return mktime(&tm);
}

char *cTimer::SetFile(const char *File)
{
  if (!isempty(File))
     strn0cpy(file, File, sizeof(file));
  return file;
}

bool cTimer::Matches(time_t t, bool Directly) const
{
  startTime = stopTime = 0;
  if (t == 0)
     t = time(NULL);

  int begin  = TimeToInt(start); // seconds from midnight
  int length = TimeToInt(stop) - begin;
  if (length < 0)
     length += SECSINDAY;

  if (IsSingleEvent()) {
     startTime = SetTime(day, begin);
     stopTime = startTime + length;
     }
  else {
     for (int i = -1; i <= 7; i++) {
         time_t t0 = IncDay(t, i);
         if (DayMatches(t0)) {
            time_t a = SetTime(t0, begin);
            time_t b = a + length;
            if ((!day || a >= day) && t <= b) {
               startTime = a;
               stopTime = b;
               break;
               }
            }
         }
     if (!startTime)
        startTime = day; // just to have something that's more than a week in the future
     else if (!Directly && (t > startTime || t > day + SECSINDAY + 3600)) // +3600 in case of DST change
        day = 0;
     }

  if (HasFlags(tfActive)) {
     if (HasFlags(tfVps) && !Directly && event && event->Vps() && schedule && schedule->PresentSeenWithin(30)) {
        startTime = event->StartTime();
        stopTime = event->EndTime();
        return event->IsRunning(true);
        }
     return startTime <= t && t < stopTime; // must stop *before* stopTime to allow adjacent timers
     }
  return false;
}

#define FULLMATCH 1000

int cTimer::Matches(const cEvent *Event, int *Overlap) const
{
  // Overlap is the percentage of the Event's duration that is covered by
  // this timer (based on FULLMATCH for finer granularity than just 100).
  // To make sure a VPS timer can be distinguished from a plain 100% overlap,
  // it gets an additional 100 added, and a VPS event that is actually running
  // gets 200 added to the FULLMATCH.
  if (HasFlags(tfActive) && channel->GetChannelID() == Event->ChannelID()) {
     bool UseVps = HasFlags(tfVps) && Event->Vps();
     Matches(UseVps ? Event->Vps() : Event->StartTime(), true);
     int overlap = 0;
     if (UseVps)
        overlap = (startTime == Event->Vps()) ? FULLMATCH + (Event->IsRunning() ? 200 : 100) : 0;
     if (!overlap) {
        if (startTime <= Event->StartTime() && Event->EndTime() <= stopTime)
           overlap = FULLMATCH;
        else if (stopTime <= Event->StartTime() || Event->EndTime() <= startTime)
           overlap = 0;
        else
           overlap = (min(stopTime, Event->EndTime()) - max(startTime, Event->StartTime())) * FULLMATCH / max(Event->Duration(), 1);
        }
     startTime = stopTime = 0;
     if (Overlap)
        *Overlap = overlap;
     return overlap >= 1000 ? tmFull : overlap > 0 ? tmPartial : tmNone;
     }
  return tmNone;
}

#define EXPIRELATENCY 60 // seconds (just in case there's a short glitch in the VPS signal)

bool cTimer::Expired(void) const
{
  return IsSingleEvent() && !Recording() && StopTime() + EXPIRELATENCY <= time(NULL);
}

time_t cTimer::StartTime(void) const
{
  if (!startTime)
     Matches();
  return startTime;
}

time_t cTimer::StopTime(void) const
{
  if (!stopTime)
     Matches();
  return stopTime;
}

void cTimer::SetEvent(const cSchedule *Schedule, const cEvent *Event)
{
  if (event != Event) { //XXX TODO check event data, too???
     if (Event) {
        char vpsbuf[64] = "";
        if (Event->Vps())
           sprintf(vpsbuf, "(VPS: %s) ", *Event->GetVpsString());
        isyslog("timer %s set to event %s %s-%s %s'%s'", *ToDescr(), *Event->GetDateString(), *Event->GetTimeString(), *Event->GetEndTimeString(), vpsbuf, Event->Title());
        }
     else
        isyslog("timer %s set to no event", *ToDescr());
     schedule = Event ? Schedule : NULL;
     event = Event;
     }
}

void cTimer::SetRecording(bool Recording)
{
  recording = Recording;
  if (recording)
     SetFlags(tfRecording);
  else
     ClrFlags(tfRecording);
  isyslog("timer %s %s", *ToDescr(), recording ? "start" : "stop");
}

void cTimer::SetPending(bool Pending)
{
  pending = Pending;
}

void cTimer::SetInVpsMargin(bool InVpsMargin)
{
  if (InVpsMargin && !inVpsMargin)
     isyslog("timer %s entered VPS margin", *ToDescr());
  inVpsMargin = InVpsMargin;
}

void cTimer::SetFlags(int Flags)
{
  flags |= Flags;
}

void cTimer::ClrFlags(int Flags)
{
  flags &= ~Flags;
}

void cTimer::InvFlags(int Flags)
{
  flags ^= Flags;
}

bool cTimer::HasFlags(int Flags) const
{
  return (flags & Flags) == Flags;
}

void cTimer::Skip(void)
{
  day = IncDay(SetTime(StartTime(), 0), 1);
  event = NULL;
}

void cTimer::OnOff(void)
{
  if (IsSingleEvent())
     InvFlags(tfActive);
  else if (day) {
     day = 0;
     ClrFlags(tfActive);
     }
  else if (HasFlags(tfActive))
     Skip();
  else
     SetFlags(tfActive);
  event = NULL;
  Matches(); // refresh start and end time
}

// -- cTimers ----------------------------------------------------------------

cTimers Timers;

cTimers::cTimers(void)
{
  modified = false;
  beingEdited = 0;;
  lastSetEvents = 0;
}

cTimer *cTimers::GetTimer(cTimer *Timer)
{
  for (cTimer *ti = First(); ti; ti = Next(ti)) {
      if (ti->Channel() == Timer->Channel() && ti->Day() == Timer->Day() && ti->Start() == Timer->Start() && ti->Stop() == Timer->Stop())
         return ti;
      }
  return NULL;
}

cTimer *cTimers::GetMatch(time_t t)
{
  cTimer *t0 = NULL;
  for (cTimer *ti = First(); ti; ti = Next(ti)) {
      if (!ti->Recording() && ti->Matches(t)) {
         if (!t0 || ti->Priority() > t0->Priority())
            t0 = ti;
         }
      }
  return t0;
}

cTimer *cTimers::GetMatch(const cEvent *Event, int *Match)
{
  cTimer *t = NULL;
  int m = tmNone;
  for (cTimer *ti = First(); ti; ti = Next(ti)) {
      int tm = ti->Matches(Event);
      if (tm > m) {
         t = ti;
         m = tm;
         if (m == tmFull)
            break;
         }
      }
  if (Match)
     *Match = m;
  return t;
}

cTimer *cTimers::GetNextActiveTimer(void)
{
  cTimer *t0 = NULL;
  for (cTimer *ti = First(); ti; ti = Next(ti)) {
      if ((ti->HasFlags(tfActive)) && (!t0 || ti->Compare(*t0) < 0))
         t0 = ti;
      }
  return t0;
}

void cTimers::SetModified(void)
{
  modified = true;
}

bool cTimers::Modified(void)
{
  bool Result = modified;
  modified = false;
  return Result;
}

#define EPGLIMITPAST   (2 * 3600) // time in seconds around now, within which EPG events will be taken into consideration
#define EPGLIMITFUTURE (4 * 3600)

void cTimers::SetEvents(void)
{
  if (time(NULL) - lastSetEvents < 5)
     return;
  cSchedulesLock SchedulesLock(false, 100);
  const cSchedules *Schedules = cSchedules::Schedules(SchedulesLock);
  if (Schedules) {
     if (!lastSetEvents || Schedules->Modified() >= lastSetEvents) {
        for (cTimer *ti = First(); ti; ti = Next(ti)) {
            const cSchedule *Schedule = Schedules->GetSchedule(ti->Channel()->GetChannelID());
            if (Schedule) {
               if (!lastSetEvents || Schedule->Modified() >= lastSetEvents) {
                  const cEvent *Event = NULL;
                  int Overlap = 0;
                  int Distance = INT_MIN;
                  time_t now = time(NULL);
                  for (const cEvent *e = Schedule->Events()->First(); e; e = Schedule->Events()->Next(e)) {
                      if (cRemote::HasKeys())
                         return; // react immediately on user input
                      if (e->EndTime() < now - EPGLIMITPAST)
                         continue; // skip old events
                      if (e->StartTime() > now + EPGLIMITFUTURE)
                         break; // no need to process events too far in the future
                      int overlap = 0;
                      ti->Matches(e, &overlap);
                      if (overlap && overlap >= Overlap) {
                         int distance = 0;
                         if (now < e->StartTime())
                            distance = e->StartTime() - now;
                         else if (now > e->EndTime())
                            distance = e->EndTime() - now;
                         if (Event && overlap == Overlap) {
                            if (Overlap > FULLMATCH) { // this means VPS
                               if (abs(Distance) < abs(distance)) 
                                  break; // we've already found the closest VPS event
                               }
                            else if (e->Duration() <= Event->Duration())
                               continue; // if overlap is the same, we take the longer event
                            }
                         Overlap = overlap;
                         Distance = distance;
                         Event = e;
                         }
                      }
                  if (Event && Event->EndTime() < now - EXPIRELATENCY && !Event->IsRunning())
                     Event = NULL;
                  ti->SetEvent(Schedule, Event);
                  }
               }
            }
        }
     }
  lastSetEvents = time(NULL);
}

void cTimers::DeleteExpired(void)
{
  cTimer *ti = First();
  while (ti) {
        cTimer *next = Next(ti);
        if (ti->Expired()) {
           isyslog("deleting timer %s", *ti->ToDescr());
           Del(ti);
           SetModified();
           }
        ti = next;
        }
}