486 lines
17 KiB
Objective-C
486 lines
17 KiB
Objective-C
/* MAPIStoreRecurrenceUtils.m - this file is part of SOGo
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*
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* Copyright (C) 2011-2012 Inverse inc
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*
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* Author: Wolfgang Sourdeau <wsourdeau@inverse.ca>
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#import <Foundation/NSArray.h>
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#import <Foundation/NSCalendarDate.h>
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#import <Foundation/NSSet.h>
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#import <Foundation/NSString.h>
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#import <Foundation/NSTimeZone.h>
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#import <NGExtensions/NSCalendarDate+misc.h>
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#import <NGExtensions/NSObject+Logs.h>
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#import <NGCards/iCalByDayMask.h>
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#import <NGCards/iCalDateTime.h>
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#import <NGCards/iCalEvent.h>
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#import <NGCards/iCalRepeatableEntityObject.h>
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#import <NGCards/iCalRecurrenceRule.h>
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#import <NGCards/iCalTimeZone.h>
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#import "NSDate+MAPIStore.h"
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#import "MAPIStoreRecurrenceUtils.h"
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#import "MAPIStoreTypes.h"
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#include <stdbool.h>
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#include <talloc.h>
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#include <util/time.h>
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#include <gen_ndr/property.h>
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@implementation iCalCalendar (MAPIStoreRecurrence)
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- (void) setupRecurrenceWithMasterEntity: (iCalRepeatableEntityObject *) entity
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fromRecurrencePattern: (struct RecurrencePattern *) rp
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withExceptions: (struct ExceptionInfo *) exInfos
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andExceptionCount: (uint16_t) exInfoCount
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inTimeZone: (NSTimeZone *) tz
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{
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NSCalendarDate *startDate, *olEndDate, *untilDate, *exDate;
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NSString *monthDay, *month;
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NSMutableSet *exceptionDates;
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NSArray *realExDates;
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iCalRecurrenceRule *rule;
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iCalByDayMask *byDayMask;
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iCalWeekOccurrence weekOccurrence;
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iCalWeekOccurrences dayMaskDays;
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NSUInteger count, max;
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NSInteger bySetPos;
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unsigned char maskValue;
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[entity removeAllRecurrenceRules];
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[entity removeAllExceptionRules];
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[entity removeAllExceptionDates];
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rule = [iCalRecurrenceRule elementWithTag: @"rrule"];
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[entity addToRecurrenceRules: rule];
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startDate = [entity startDate];
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// DEBUG(5, ("From client:\n"));
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// NDR_PRINT_DEBUG(AppointmentRecurrencePattern, pattern);
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memset (&dayMaskDays, 0, sizeof (iCalWeekOccurrences));
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if (rp->PatternType == PatternType_Day)
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{
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[rule setFrequency: iCalRecurrenceFrequenceDaily];
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[rule setRepeatInterval: rp->Period / SOGoMinutesPerDay];
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}
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else if (rp->PatternType == PatternType_Week)
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{
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[rule setFrequency: iCalRecurrenceFrequenceWeekly];
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[rule setRepeatInterval: rp->Period];
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/* MAPI values for days are the same as in NGCards */
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for (count = 0; count < 7; count++)
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{
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maskValue = 1 << count;
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if ((rp->PatternTypeSpecific.WeekRecurrencePattern & maskValue))
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dayMaskDays[count] = iCalWeekOccurrenceAll;
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}
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byDayMask = [iCalByDayMask byDayMaskWithDays: dayMaskDays];
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[rule setByDayMask: byDayMask];
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}
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else
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{
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if (rp->RecurFrequency
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== RecurFrequency_Monthly)
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{
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[rule setFrequency: iCalRecurrenceFrequenceMonthly];
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[rule setRepeatInterval: rp->Period];
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}
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else if (rp->RecurFrequency
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== RecurFrequency_Yearly)
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{
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[rule setFrequency: iCalRecurrenceFrequenceYearly];
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[rule setRepeatInterval: rp->Period / 12];
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month = [NSString stringWithFormat: @"%d", [startDate monthOfYear]];
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[rule setSingleValue: month forKey: @"bymonth"];
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}
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else
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[self errorWithFormat:
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@"unhandled frequency case for Month pattern type: %d",
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rp->RecurFrequency];
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if ((rp->PatternType & 3) == 3)
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{
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/* HjMonthNth and MonthNth */
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if (rp->PatternTypeSpecific.MonthRecurrencePattern.WeekRecurrencePattern
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== 0x7f)
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{
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/* firsts or last day of month */
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if (rp->PatternTypeSpecific.MonthRecurrencePattern.N
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== RecurrenceN_Last)
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monthDay = @"-1";
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else
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monthDay = [NSString stringWithFormat: @"%d",
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rp->PatternTypeSpecific.MonthRecurrencePattern.N];
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[rule setSingleValue: monthDay forKey: @"bymonthday"];
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}
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else if ((rp->PatternTypeSpecific.MonthRecurrencePattern.WeekRecurrencePattern
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== 0x3e) /* Nth week day */
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|| (rp->PatternTypeSpecific.MonthRecurrencePattern.WeekRecurrencePattern
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== 0x41)) /* Nth week-end day */
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{
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for (count = 0; count < 7; count++)
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{
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maskValue = 1 << count;
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if ((rp->PatternTypeSpecific.MonthRecurrencePattern.WeekRecurrencePattern
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& maskValue))
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dayMaskDays[count] = iCalWeekOccurrenceAll;
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}
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byDayMask = [iCalByDayMask byDayMaskWithDays: dayMaskDays];
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[rule setByDayMask: byDayMask];
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if (rp->PatternTypeSpecific.MonthRecurrencePattern.N
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== RecurrenceN_Last)
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bySetPos = -1;
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else
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bySetPos = rp->PatternTypeSpecific.MonthRecurrencePattern.N;
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[rule
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setSingleValue: [NSString stringWithFormat: @"%d", bySetPos]
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forKey: @"bysetpos"];
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}
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else
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{
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if (rp->PatternTypeSpecific.MonthRecurrencePattern.N
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< RecurrenceN_Last)
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weekOccurrence = (1
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<< (rp->PatternTypeSpecific.MonthRecurrencePattern.N
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- 1));
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else
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weekOccurrence = iCalWeekOccurrenceLast;
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for (count = 0; count < 7; count++)
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{
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maskValue = 1 << count;
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if ((rp->PatternTypeSpecific.MonthRecurrencePattern.WeekRecurrencePattern
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& maskValue))
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dayMaskDays[count] = weekOccurrence;
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}
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byDayMask = [iCalByDayMask byDayMaskWithDays: dayMaskDays];
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[rule setByDayMask: byDayMask];
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}
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}
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else if ((rp->PatternType & 2) == 2
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|| (rp->PatternType & 4) == 4)
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{
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/* MonthEnd, HjMonth and HjMonthEnd */
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[rule
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setSingleValue: [NSString stringWithFormat: @"%d",
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rp->PatternTypeSpecific.Day]
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forKey: @"bymonthday"];
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}
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else
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[self errorWithFormat: @"invalid value for PatternType: %.4x",
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rp->PatternType];
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}
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switch (rp->EndType)
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{
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case END_NEVER_END:
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case NEVER_END:
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break;
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case END_AFTER_N_OCCURRENCES:
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[rule setRepeatCount: rp->OccurrenceCount];
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break;
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case END_AFTER_DATE:
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olEndDate = [NSCalendarDate dateFromMinutesSince1601: rp->EndDate];
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untilDate = [NSCalendarDate dateWithYear: [olEndDate yearOfCommonEra]
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month: [olEndDate monthOfYear]
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day: [olEndDate dayOfMonth]
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hour: [startDate hourOfDay]
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minute: [startDate minuteOfHour]
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second: [startDate secondOfMinute]
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timeZone: [startDate timeZone]];
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[rule setUntilDate: untilDate];
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break;
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default:
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[self errorWithFormat: @"invalid value for EndType: %.4x",
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rp->EndType];
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}
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/* exception dates:
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- take all deleted instances
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- remove all modified instances available in ExceptionInfo from the above set
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- add remaining instances, in chronological order
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*/
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/* Heuristic to avoid these loops */
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if (rp->DeletedInstanceCount != rp->ModifiedInstanceCount) {
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exceptionDates = [NSMutableSet set];
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for (count = 0; count < rp->DeletedInstanceCount; count++)
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{
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exDate
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= [NSDate dateFromMinutesSince1601: rp->DeletedInstanceDates[count]];
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exDate = [exDate hour: [startDate hourOfDay]
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minute: [startDate minuteOfHour]
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second: [startDate secondOfMinute]];
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[exceptionDates addObject: exDate];
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}
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/* Read the exceptions to remove the instances that are modified and not deleted */
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if (exInfos && exInfoCount > 0)
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{
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for (count = 0; count < exInfoCount; count++)
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{
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/* The OriginalStartDate is in local time */
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exDate = [NSDate dateFromMinutesSince1601: exInfos[count].OriginalStartDate];
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exDate = [exDate dateByAddingYears: 0 months: 0 days: 0
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hours: 0 minutes: 0
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seconds: - [tz secondsFromGMT]];
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[exceptionDates removeObject: exDate];
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}
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}
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realExDates = [[exceptionDates allObjects]
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sortedArrayUsingSelector: @selector (compare:)];
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max = [realExDates count];
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for (count = 0; count < max; count++)
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[entity addToExceptionDates: [realExDates objectAtIndex: count]];
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}
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}
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@end
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@implementation iCalRecurrenceRule (MAPIStoreRecurrence)
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- (void) fillRecurrencePattern: (struct RecurrencePattern *) rp
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withEvent: (iCalEvent *) event
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inTimeZone: (NSTimeZone *) timeZone
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inMemCtx: (TALLOC_CTX *) memCtx
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{
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iCalRecurrenceFrequency freq;
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iCalByDayMask *byDayMask;
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NSString *byMonthDay, *bySetPos;
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NSCalendarDate *startDate, *endDate, *untilDate, *beginOfWeek, *minimumDate,
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*moduloDate, *midnight;
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iCalWeekOccurrences *days;
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NSInteger dayOfWeek, repeatInterval, repeatCount, count, firstOccurrence,
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max;
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uint32_t nbrMonths, mask;
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NSArray *events;
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NSMutableArray *deletedDates, *modifiedDates;
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startDate = [event firstRecurrenceStartDate];
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[startDate setTimeZone: timeZone];
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endDate = [event lastPossibleRecurrenceStartDate];
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[endDate setTimeZone: timeZone];
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rp->ReaderVersion = 0x3004;
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rp->WriterVersion = 0x3004;
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rp->StartDate = [[startDate beginOfDay] asMinutesSince1601];
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untilDate = [self untilDate];
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if (untilDate)
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{
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rp->EndDate = [untilDate asMinutesSince1601];
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rp->EndType = END_AFTER_DATE;
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}
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else
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{
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repeatCount = [self repeatCount];
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if (repeatCount > 0)
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{
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rp->EndDate = [endDate asMinutesSince1601];
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rp->OccurrenceCount = repeatCount;
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rp->EndType = END_AFTER_N_OCCURRENCES;
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}
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else
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{
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rp->EndDate = 0x5ae980df;
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rp->OccurrenceCount = 0xa;
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rp->EndType = END_NEVER_END;
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}
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}
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freq = [self frequency];
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repeatInterval = [self repeatInterval];
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if (freq == iCalRecurrenceFrequenceDaily)
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{
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rp->RecurFrequency = RecurFrequency_Daily;
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rp->PatternType = PatternType_Day;
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rp->Period = repeatInterval * SOGoMinutesPerDay;
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rp->FirstDateTime = rp->StartDate % rp->Period;
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}
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else if (freq == iCalRecurrenceFrequenceWeekly)
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{
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rp->RecurFrequency = RecurFrequency_Weekly;
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rp->PatternType = PatternType_Week;
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rp->Period = repeatInterval;
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dayOfWeek = [startDate dayOfWeek];
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mask = 0;
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byDayMask = [self byDayMask];
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if (byDayMask)
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{
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for (count = 0; count < 7; count++)
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if ([byDayMask occursOnDay: count])
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mask |= 1 << count;
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}
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else
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{
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/* Set the recurrence pattern using start date */
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mask |= 1 << dayOfWeek;
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}
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rp->PatternTypeSpecific.WeekRecurrencePattern = mask;
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/* FirstDateTime */
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if (dayOfWeek)
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beginOfWeek = [startDate dateByAddingYears: 0 months: 0
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days: -dayOfWeek
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hours: 0 minutes: 0
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seconds: 0];
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else
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beginOfWeek = startDate;
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rp->FirstDateTime = ([[beginOfWeek beginOfDay] asMinutesSince1601]
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% (repeatInterval * 10080));
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}
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else
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{
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if (freq == iCalRecurrenceFrequenceMonthly)
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{
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rp->RecurFrequency = RecurFrequency_Monthly;
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rp->Period = repeatInterval;
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}
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else if (freq == iCalRecurrenceFrequenceYearly)
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{
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rp->RecurFrequency = RecurFrequency_Yearly;
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rp->Period = 12;
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if (repeatInterval != 1)
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[self errorWithFormat:
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@"yearly interval '%d' cannot be converted",
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repeatInterval];
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}
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else
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[self errorWithFormat: @"frequency '%d' cannot be converted", freq];
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/* FirstDateTime */
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midnight = [[startDate firstDayOfMonth] beginOfDay];
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minimumDate = [NSCalendarDate dateFromMinutesSince1601: 0];
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nbrMonths = (([midnight yearOfCommonEra]
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- [minimumDate yearOfCommonEra]) * 12
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+ [midnight monthOfYear] - 1);
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moduloDate = [minimumDate dateByAddingYears: 0
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months: (nbrMonths % rp->Period)
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days: 0 hours: 0 minutes: 0
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seconds: 0];
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rp->FirstDateTime = [moduloDate asMinutesSince1601];
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byMonthDay = [[self byMonthDay] objectAtIndex: 0];
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if (!byMonthDay && (freq == iCalRecurrenceFrequenceYearly))
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{
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byMonthDay = [NSString stringWithFormat: @"%d", [startDate dayOfMonth]];
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[self warnWithFormat: @"no month day specified in yearly"
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@" recurrence: we deduce it from the start date: %@",
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byMonthDay];
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}
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if (byMonthDay)
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{
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if ([byMonthDay intValue] < 0)
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{
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/* This means we cannot handle values of BYMONTHDAY that are <
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-7. */
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rp->PatternType = PatternType_MonthNth;
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rp->PatternTypeSpecific.MonthRecurrencePattern.WeekRecurrencePattern = 0x7f;
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rp->PatternTypeSpecific.MonthRecurrencePattern.N = RecurrenceN_Last;
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}
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else
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{
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rp->PatternType = PatternType_Month;
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rp->PatternTypeSpecific.Day = [byMonthDay intValue];
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}
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}
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else
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{
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rp->PatternType = PatternType_MonthNth;
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byDayMask = [self byDayMask];
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mask = 0;
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days = [byDayMask weekDayOccurrences];
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if (days)
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{
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for (count = 0; count < 7; count++)
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if (days[0][count])
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mask |= 1 << count;
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}
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if (mask)
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{
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rp->PatternTypeSpecific.MonthRecurrencePattern.WeekRecurrencePattern = mask;
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bySetPos = [self flattenedValuesForKey: @"bysetpos"];
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if ([bySetPos length])
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rp->PatternTypeSpecific.MonthRecurrencePattern.N
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= ([bySetPos hasPrefix: @"-"]
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? RecurrenceN_Last : [bySetPos intValue]);
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else
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{
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firstOccurrence = [byDayMask firstOccurrence];
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if (firstOccurrence)
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rp->PatternTypeSpecific.MonthRecurrencePattern.N
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= ((firstOccurrence > -1)
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? firstOccurrence : RecurrenceN_Last);
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}
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}
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else
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[self errorWithFormat: @"rule for an event that never occurs"];
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}
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}
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events = [[event parent] events];
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max = [events count];
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modifiedDates = [NSMutableArray arrayWithCapacity: max];
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for (count = 1; count < max; count++)
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{
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startDate = [[events objectAtIndex: count] recurrenceId];
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if (startDate)
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[modifiedDates addObject: startDate];
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else
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[self errorWithFormat: @"missing recurrence-id for event %d", count];
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}
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max = [modifiedDates count];
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rp->ModifiedInstanceCount = max;
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rp->ModifiedInstanceDates = talloc_array (memCtx, uint32_t, max);
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for (count = 0; count < max; count++)
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{
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startDate = [[modifiedDates objectAtIndex: count]
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hour: 0 minute: 0 second: 0];
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*(rp->ModifiedInstanceDates + count) = [startDate asMinutesSince1601];
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}
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deletedDates = [modifiedDates mutableCopy];
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[deletedDates autorelease];
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[deletedDates
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addObjectsFromArray: [event exceptionDatesWithTimeZone: utcTZ]];
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[deletedDates sortUsingFunction: NSDateCompare context: NULL];
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max = [deletedDates count];
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rp->DeletedInstanceCount = max;
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rp->DeletedInstanceDates = talloc_array (memCtx, uint32_t, max);
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for (count = 0; count < max; count++)
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{
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startDate = [[deletedDates objectAtIndex: count]
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hour: 0 minute: 0 second: 0];
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*(rp->DeletedInstanceDates + count) = [startDate asMinutesSince1601];
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}
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}
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@end
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