| 1 | #include "schedule.h" |
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| 2 | #include "list.h" |
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| 3 | #include <sys/types.h> |
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| 4 | #include <stdbool.h> |
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| 5 | #include <stdint.h> |
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| 6 | #include <stdlib.h> |
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| 7 | #include <syslog.h> |
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| 8 | #include <time.h> |
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| 9 | #include <ev.h> |
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| 10 | |
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| 11 | struct og_schedule *current_schedule = NULL; |
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| 12 | static LIST_HEAD(schedule_list); |
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| 13 | |
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| 14 | static void og_schedule_add(struct og_schedule *new) |
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| 15 | { |
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| 16 | struct og_schedule *schedule, *next; |
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| 17 | time_t now; |
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| 18 | |
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| 19 | now = time(NULL); |
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| 20 | if (new->seconds < now) { |
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| 21 | free(new); |
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| 22 | return; |
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| 23 | } |
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| 24 | list_for_each_entry_safe(schedule, next, &schedule_list, list) { |
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| 25 | if (new->seconds < schedule->seconds) { |
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| 26 | list_add_tail(&new->list, &schedule->list); |
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| 27 | return; |
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| 28 | } |
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| 29 | } |
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| 30 | list_add_tail(&new->list, &schedule_list); |
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| 31 | } |
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| 32 | |
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| 33 | /* Returns the days in a month from the weekday. */ |
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| 34 | static void get_days_from_weekday(struct tm *tm, int wday, int *days, int *j) |
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| 35 | { |
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| 36 | int i, mday = 0; |
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| 37 | |
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| 38 | tm->tm_mday = 1; |
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| 39 | |
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| 40 | //Shift week to start on Sunday instead of Monday |
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| 41 | if (wday == 6) |
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| 42 | wday = 0; |
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| 43 | else |
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| 44 | wday++; |
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| 45 | |
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| 46 | /* A bit bruteforce, but simple. */ |
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| 47 | for (i = 0; i <= 30; i++) { |
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| 48 | mktime(tm); |
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| 49 | /* Not this weekday, skip. */ |
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| 50 | if (tm->tm_wday != wday) { |
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| 51 | tm->tm_mday++; |
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| 52 | continue; |
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| 53 | } |
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| 54 | /* Not interested in next month. */ |
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| 55 | if (tm->tm_mday < mday) |
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| 56 | break; |
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| 57 | |
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| 58 | /* Found a matching. */ |
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| 59 | mday = tm->tm_mday; |
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| 60 | days[(*j)++] = tm->tm_mday; |
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| 61 | tm->tm_mday++; |
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| 62 | } |
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| 63 | } |
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| 64 | |
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| 65 | /* Returns the days in the given week. */ |
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| 66 | static void get_days_from_week(struct tm *tm, int week, int *days, int *k) |
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| 67 | { |
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| 68 | int i, j, week_counter = 0; |
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| 69 | bool week_over = false; |
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| 70 | |
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| 71 | tm->tm_mday = 1; |
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| 72 | |
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| 73 | /* Remaining days of this month. */ |
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| 74 | for (i = 0; i <= 30; i++) { |
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| 75 | mktime(tm); |
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| 76 | |
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| 77 | /* Last day of this week? */ |
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| 78 | if (tm->tm_wday == 6) |
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| 79 | week_over = true; |
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| 80 | |
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| 81 | /* Not the week we are searching for. */ |
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| 82 | if (week != week_counter) { |
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| 83 | tm->tm_mday++; |
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| 84 | if (week_over) { |
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| 85 | week_counter++; |
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| 86 | week_over = false; |
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| 87 | } |
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| 88 | continue; |
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| 89 | } |
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| 90 | |
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| 91 | /* Found matching. */ |
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| 92 | for (j = tm->tm_wday; j <= 6; j++) { |
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| 93 | days[(*k)++] = tm->tm_mday++; |
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| 94 | mktime(tm); |
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| 95 | } |
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| 96 | break; |
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| 97 | } |
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| 98 | } |
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| 99 | |
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| 100 | static int monthdays[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; |
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| 101 | |
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| 102 | static int last_month_day(struct tm *tm) |
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| 103 | { |
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| 104 | /* Leap year? Adjust it. */ |
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| 105 | if (tm->tm_mon == 1) { |
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| 106 | tm->tm_mday = 29; |
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| 107 | mktime(tm); |
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| 108 | if (tm->tm_mday == 29) |
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| 109 | return 29; |
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| 110 | |
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| 111 | tm->tm_mon = 1; |
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| 112 | } |
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| 113 | |
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| 114 | return monthdays[tm->tm_mon]; |
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| 115 | } |
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| 116 | |
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| 117 | /* Returns the days in the given week. */ |
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| 118 | static void get_last_week(struct tm *tm, int *days, int *j) |
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| 119 | { |
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| 120 | int i, last_day; |
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| 121 | |
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| 122 | last_day = last_month_day(tm); |
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| 123 | tm->tm_mday = last_day; |
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| 124 | |
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| 125 | for (i = last_day; i >= last_day - 6; i--) { |
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| 126 | mktime(tm); |
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| 127 | |
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| 128 | days[(*j)++] = tm->tm_mday; |
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| 129 | |
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| 130 | |
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| 131 | /* Last day of this week? */ |
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| 132 | if (tm->tm_wday == 1) |
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| 133 | break; |
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| 134 | |
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| 135 | tm->tm_mday--; |
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| 136 | } |
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| 137 | } |
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| 138 | |
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| 139 | static void og_parse_years(uint16_t years_mask, int years[]) |
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| 140 | { |
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| 141 | int i, j = 0; |
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| 142 | |
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| 143 | for (i = 0; i < 16; i++) { |
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| 144 | if ((1 << i) & years_mask) |
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| 145 | years[j++] = 2010 + i - 1900; |
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| 146 | } |
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| 147 | } |
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| 148 | |
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| 149 | static void og_parse_months(uint16_t months_mask, int months[]) |
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| 150 | { |
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| 151 | int i, j = 0; |
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| 152 | |
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| 153 | for (i = 0; i < 12; i++) { |
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| 154 | if ((1 << i) & months_mask) |
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| 155 | months[j++] = i + 1; |
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| 156 | } |
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| 157 | } |
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| 158 | |
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| 159 | static void og_parse_days(uint32_t days_mask, int *days) |
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| 160 | { |
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| 161 | int i, j = 0; |
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| 162 | |
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| 163 | for (i = 0; i < 31; i++) { |
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| 164 | if ((1 << i) & days_mask) |
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| 165 | days[j++] = i + 1; |
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| 166 | } |
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| 167 | } |
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| 168 | |
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| 169 | static void og_parse_hours(uint16_t hours_mask, uint8_t am_pm, int hours[]) |
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| 170 | { |
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| 171 | int pm = 12 * am_pm; |
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| 172 | int i, j = 0; |
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| 173 | |
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| 174 | for (i = 0; i < 12; i++) { |
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| 175 | if ((1 << i) & hours_mask) |
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| 176 | hours[j++] = i + pm + 1; |
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| 177 | } |
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| 178 | } |
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| 179 | |
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| 180 | static void og_schedule_remove_duplicates() |
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| 181 | { |
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| 182 | struct og_schedule *schedule, *next, *prev = NULL; |
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| 183 | |
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| 184 | list_for_each_entry_safe(schedule, next, &schedule_list, list) { |
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| 185 | if (!prev) { |
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| 186 | prev = schedule; |
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| 187 | continue; |
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| 188 | } |
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| 189 | if (prev->seconds == schedule->seconds && |
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| 190 | prev->task_id == schedule->task_id) { |
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| 191 | list_del(&prev->list); |
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| 192 | free(prev); |
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| 193 | } |
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| 194 | prev = schedule; |
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| 195 | } |
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| 196 | } |
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| 197 | |
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| 198 | static bool og_schedule_stale(time_t seconds) |
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| 199 | { |
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| 200 | time_t now; |
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| 201 | |
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| 202 | now = time(NULL); |
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| 203 | if (seconds < now) |
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| 204 | return true; |
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| 205 | |
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| 206 | return false; |
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| 207 | } |
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| 208 | |
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| 209 | static void og_schedule_create_weekdays(int month, int year, |
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| 210 | int *hours, int minutes, int week_days, |
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| 211 | uint32_t task_id, uint32_t schedule_id, |
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| 212 | enum og_schedule_type type, |
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| 213 | bool on_start) |
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| 214 | { |
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| 215 | struct og_schedule *schedule; |
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| 216 | int month_days[5]; |
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| 217 | int n_month_days; |
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| 218 | time_t seconds; |
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| 219 | uint32_t wday; |
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| 220 | struct tm tm; |
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| 221 | int k, l; |
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| 222 | |
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| 223 | for (wday = 0; wday < 7; wday++) { |
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| 224 | if (!((1 << wday) & week_days)) |
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| 225 | continue; |
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| 226 | |
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| 227 | memset(&tm, 0, sizeof(tm)); |
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| 228 | tm.tm_mon = month; |
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| 229 | tm.tm_year = year; |
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| 230 | |
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| 231 | n_month_days = 0; |
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| 232 | memset(month_days, 0, sizeof(month_days)); |
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| 233 | get_days_from_weekday(&tm, wday, month_days, &n_month_days); |
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| 234 | |
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| 235 | for (k = 0; month_days[k] != 0 && k < n_month_days; k++) { |
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| 236 | for (l = 0; hours[l] != 0 && l < 31; l++) { |
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| 237 | memset(&tm, 0, sizeof(tm)); |
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| 238 | tm.tm_year = year; |
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| 239 | tm.tm_mon = month; |
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| 240 | tm.tm_mday = month_days[k]; |
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| 241 | tm.tm_hour = hours[l] - 1; |
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| 242 | tm.tm_min = minutes; |
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| 243 | seconds = mktime(&tm); |
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| 244 | |
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| 245 | if (on_start && og_schedule_stale(seconds)) |
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| 246 | continue; |
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| 247 | |
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| 248 | schedule = (struct og_schedule *) |
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| 249 | calloc(1, sizeof(struct og_schedule)); |
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| 250 | if (!schedule) |
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| 251 | return; |
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| 252 | |
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| 253 | schedule->seconds = seconds; |
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| 254 | schedule->task_id = task_id; |
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| 255 | schedule->schedule_id = schedule_id; |
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| 256 | schedule->type = type; |
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| 257 | og_schedule_add(schedule); |
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| 258 | } |
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| 259 | } |
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| 260 | } |
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| 261 | } |
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| 262 | |
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| 263 | static void og_schedule_create_weeks(int month, int year, |
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| 264 | int *hours, int minutes, int weeks, |
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| 265 | uint32_t task_id, uint32_t schedule_id, |
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| 266 | enum og_schedule_type type, bool on_start) |
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| 267 | { |
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| 268 | struct og_schedule *schedule; |
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| 269 | int month_days[7]; |
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| 270 | int n_month_days; |
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| 271 | time_t seconds; |
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| 272 | struct tm tm; |
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| 273 | int week; |
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| 274 | int k, l; |
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| 275 | |
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| 276 | for (week = 0; week < 5; week++) { |
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| 277 | if (!((1 << week) & weeks)) |
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| 278 | continue; |
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| 279 | |
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| 280 | memset(&tm, 0, sizeof(tm)); |
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| 281 | tm.tm_mon = month; |
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| 282 | tm.tm_year = year; |
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| 283 | |
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| 284 | n_month_days = 0; |
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| 285 | memset(month_days, 0, sizeof(month_days)); |
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| 286 | if (week == 5) |
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| 287 | get_last_week(&tm, month_days, &n_month_days); |
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| 288 | else |
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| 289 | get_days_from_week(&tm, week, month_days, &n_month_days); |
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| 290 | |
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| 291 | for (k = 0; month_days[k] != 0 && k < n_month_days; k++) { |
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| 292 | for (l = 0; hours[l] != 0 && l < 31; l++) { |
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| 293 | memset(&tm, 0, sizeof(tm)); |
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| 294 | tm.tm_year = year; |
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| 295 | tm.tm_mon = month; |
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| 296 | tm.tm_mday = month_days[k]; |
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| 297 | tm.tm_hour = hours[l] - 1; |
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| 298 | tm.tm_min = minutes; |
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| 299 | seconds = mktime(&tm); |
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| 300 | |
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| 301 | if (on_start && og_schedule_stale(seconds)) |
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| 302 | continue; |
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| 303 | |
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| 304 | schedule = (struct og_schedule *) |
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| 305 | calloc(1, sizeof(struct og_schedule)); |
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| 306 | if (!schedule) |
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| 307 | return; |
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| 308 | |
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| 309 | schedule->seconds = seconds; |
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| 310 | schedule->task_id = task_id; |
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| 311 | schedule->schedule_id = schedule_id; |
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| 312 | schedule->type = type; |
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| 313 | og_schedule_add(schedule); |
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| 314 | } |
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| 315 | } |
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| 316 | } |
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| 317 | } |
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| 318 | |
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| 319 | static void og_schedule_create_days(int month, int year, |
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| 320 | int *hours, int minutes, int *days, |
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| 321 | uint32_t task_id, uint32_t schedule_id, |
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| 322 | enum og_schedule_type type, bool on_start) |
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| 323 | { |
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| 324 | struct og_schedule *schedule; |
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| 325 | time_t seconds; |
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| 326 | struct tm tm; |
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| 327 | int k, l; |
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| 328 | |
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| 329 | for (k = 0; days[k] != 0 && k < 31; k++) { |
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| 330 | for (l = 0; hours[l] != 0 && l < 31; l++) { |
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| 331 | |
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| 332 | memset(&tm, 0, sizeof(tm)); |
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| 333 | tm.tm_year = year; |
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| 334 | tm.tm_mon = month; |
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| 335 | tm.tm_mday = days[k]; |
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| 336 | tm.tm_hour = hours[l] - 1; |
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| 337 | tm.tm_min = minutes; |
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| 338 | seconds = mktime(&tm); |
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| 339 | |
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| 340 | if (on_start && og_schedule_stale(seconds)) |
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| 341 | continue; |
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| 342 | |
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| 343 | schedule = (struct og_schedule *) |
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| 344 | calloc(1, sizeof(struct og_schedule)); |
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| 345 | if (!schedule) |
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| 346 | return; |
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| 347 | |
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| 348 | schedule->seconds = seconds; |
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| 349 | schedule->task_id = task_id; |
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| 350 | schedule->schedule_id = schedule_id; |
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| 351 | schedule->type = type; |
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| 352 | og_schedule_add(schedule); |
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| 353 | } |
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| 354 | } |
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| 355 | } |
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| 356 | |
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| 357 | void og_schedule_create(unsigned int schedule_id, unsigned int task_id, |
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| 358 | enum og_schedule_type type, |
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| 359 | struct og_schedule_time *time) |
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| 360 | { |
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| 361 | int year, month, minutes; |
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| 362 | int months[12] = {}; |
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| 363 | int years[12] = {}; |
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| 364 | int hours[12] = {}; |
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| 365 | int days[31] = {}; |
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| 366 | int i, j; |
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| 367 | |
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| 368 | og_parse_years(time->years, years); |
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| 369 | og_parse_months(time->months, months); |
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| 370 | og_parse_days(time->days, days); |
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| 371 | og_parse_hours(time->hours, time->am_pm, hours); |
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| 372 | minutes = time->minutes; |
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| 373 | |
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| 374 | for (i = 0; years[i] != 0 && i < 12; i++) { |
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| 375 | for (j = 0; months[j] != 0 && j < 12; j++) { |
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| 376 | month = months[j] - 1; |
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| 377 | year = years[i]; |
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| 378 | |
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| 379 | if (time->week_days) |
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| 380 | og_schedule_create_weekdays(month, year, |
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| 381 | hours, minutes, |
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| 382 | time->week_days, |
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| 383 | task_id, |
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| 384 | schedule_id, |
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| 385 | type, |
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| 386 | time->on_start); |
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| 387 | |
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| 388 | if (time->weeks) |
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| 389 | og_schedule_create_weeks(month, year, |
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| 390 | hours, minutes, |
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| 391 | time->weeks, |
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| 392 | task_id, |
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| 393 | schedule_id, |
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| 394 | type, time->on_start); |
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| 395 | |
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| 396 | if (time->days) |
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| 397 | og_schedule_create_days(month, year, |
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| 398 | hours, minutes, |
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| 399 | days, |
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| 400 | task_id, |
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| 401 | schedule_id, |
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| 402 | type, time->on_start); |
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| 403 | } |
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| 404 | } |
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| 405 | |
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| 406 | og_schedule_remove_duplicates(); |
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| 407 | } |
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| 408 | |
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| 409 | void og_schedule_delete(struct ev_loop *loop, uint32_t schedule_id) |
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| 410 | { |
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| 411 | struct og_schedule *schedule, *next; |
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| 412 | |
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| 413 | list_for_each_entry_safe(schedule, next, &schedule_list, list) { |
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| 414 | if (schedule->schedule_id != schedule_id) |
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| 415 | continue; |
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| 416 | |
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| 417 | list_del(&schedule->list); |
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| 418 | if (current_schedule == schedule) { |
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| 419 | ev_timer_stop(loop, &schedule->timer); |
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| 420 | current_schedule = NULL; |
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| 421 | og_schedule_refresh(loop); |
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| 422 | } |
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| 423 | free(schedule); |
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| 424 | } |
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| 425 | } |
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| 426 | |
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| 427 | void og_schedule_update(struct ev_loop *loop, unsigned int schedule_id, |
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| 428 | unsigned int task_id, struct og_schedule_time *time) |
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| 429 | { |
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| 430 | og_schedule_delete(loop, schedule_id); |
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| 431 | og_schedule_create(schedule_id, task_id, OG_SCHEDULE_TASK, time); |
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| 432 | } |
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| 433 | |
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| 434 | static void og_agent_timer_cb(struct ev_loop *loop, ev_timer *timer, int events) |
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| 435 | { |
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| 436 | struct og_schedule *current; |
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| 437 | |
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| 438 | current = container_of(timer, struct og_schedule, timer); |
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| 439 | og_schedule_run(current->task_id, current->schedule_id, current->type); |
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| 440 | |
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| 441 | ev_timer_stop(loop, timer); |
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| 442 | list_del(¤t->list); |
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| 443 | free(current); |
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| 444 | |
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| 445 | og_schedule_next(loop); |
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| 446 | } |
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| 447 | |
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| 448 | void og_schedule_next(struct ev_loop *loop) |
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| 449 | { |
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| 450 | struct og_schedule *schedule; |
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| 451 | time_t now, seconds; |
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| 452 | |
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| 453 | if (list_empty(&schedule_list)) { |
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| 454 | current_schedule = NULL; |
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| 455 | return; |
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| 456 | } |
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| 457 | |
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| 458 | schedule = list_first_entry(&schedule_list, struct og_schedule, list); |
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| 459 | now = time(NULL); |
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| 460 | if (schedule->seconds <= now) |
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| 461 | seconds = 0; |
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| 462 | else |
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| 463 | seconds = schedule->seconds - now; |
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| 464 | |
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| 465 | ev_timer_init(&schedule->timer, og_agent_timer_cb, seconds, 0.); |
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| 466 | ev_timer_start(loop, &schedule->timer); |
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| 467 | current_schedule = schedule; |
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| 468 | } |
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| 469 | |
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| 470 | void og_schedule_refresh(struct ev_loop *loop) |
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| 471 | { |
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| 472 | if (current_schedule) |
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| 473 | ev_timer_stop(loop, ¤t_schedule->timer); |
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| 474 | |
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| 475 | og_schedule_next(loop); |
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| 476 | } |
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