sd_cron.c

#include <stdio.h>
#include <stdlib.h>
#include <regex.h>
#include <errno.h>

#include "sd_cron.h"
#include "utils.h"
#include "config.h"

#define DELAY24H_SEC 86400



bool setTodayChanceOfRain(int percent) 
{
  logMessage(LOG_DEBUG, "Set today's chance of rain = %d\n",percent);
  if (percent <= 100 && percent >= 0) {
    _sdconfig_.todayRainChance  = percent;
    if (_sdconfig_.precipChanceDelay > 0 && _sdconfig_.todayRainChance >= _sdconfig_.precipChanceDelay) {
      //enable_delay24h(true);
      reset_delay24h_time(0); // will add 24hours or reset
    }
    return true;
  }

  return false;
}

bool setTodayRainTotal(float rain)
{
  if (_sdconfig_.todayRainTotal == rain)
    return true;
   
   _sdconfig_.todayRainTotal = rain;

  logMessage(LOG_DEBUG, "Today's rain total = %f\n",_sdconfig_.todayRainTotal);

  time_t now;
  time(&now);

  if (_sdconfig_.precipInchDelay2day > 0 && _sdconfig_.todayRainTotal >= _sdconfig_.precipInchDelay2day) {
    reset_delay24h_time(now + (DELAY24H_SEC * 2) ); // today + 2 days in seconds
  } else if (_sdconfig_.precipInchDelay1day > 0 && _sdconfig_.todayRainTotal >= _sdconfig_.precipInchDelay1day) {
    //enable_delay24h(true);
    reset_delay24h_time(now + DELAY24H_SEC);
  }

  return true;
}

bool check_delay24h()
{
  if (_sdconfig_.delay24h_time > 0) {
    time_t now;
    time(&now);
    if (difftime(now, _sdconfig_.delay24h_time) > 0) { // 24hours in seconds
      enable_delay24h(false);
      return true;
    }
  }
  return false; 
}

void enable_calendar(bool state)
{
  if (_sdconfig_.calendar != state) {
    _sdconfig_.eventToUpdateHappened = true;
    _sdconfig_.calendar = state;
    logMessage(LOG_NOTICE, "Turning %s calendar\n",state==true?"on":"off");
  } else {
    logMessage(LOG_NOTICE, "Ignore request to turn %s calendar\n",state==true?"on":"off");
  }
}

void enable_delay24h(bool state)
{
  if (_sdconfig_.delay24h != state) {
    _sdconfig_.eventToUpdateHappened = true;

    _sdconfig_.delay24h = state;
    if (state) {
      time(&_sdconfig_.delay24h_time);
      _sdconfig_.delay24h_time =  _sdconfig_.delay24h_time + DELAY24H_SEC;
      logMessage(LOG_NOTICE, "Turning on rain Delay\n");
      zc_rain_delay_enabeled();
    } else {
      _sdconfig_.delay24h_time = 0;
      logMessage(LOG_NOTICE, "Turning off rain Delay\n");
    }
    write_cache();
  } else {
    logMessage(LOG_NOTICE, "Ignore request to turn %s rain Delay\n",state==true?"on":"off");
  }
}

void reset_delay24h_time(unsigned long dtime)
{
  if (_sdconfig_.delay24h != true) {
    _sdconfig_.eventToUpdateHappened = true;
  }

  time_t now;
  time(&now);
  //logMessage(LOG_NOTICE, "Reset rain Delay request %d  now %d\n", dtime, now);
  if (dtime > now) {
    _sdconfig_.delay24h = true;
    _sdconfig_.delay24h_time = dtime;
    logMessage(LOG_NOTICE, "Reset rain Delay custom time %s\n", ctime(&_sdconfig_.delay24h_time));
    zc_rain_delay_enabeled();
  } else {
    _sdconfig_.delay24h = true;
    time(&_sdconfig_.delay24h_time);
    _sdconfig_.delay24h_time =  _sdconfig_.delay24h_time + DELAY24H_SEC;
    logMessage(LOG_NOTICE, "Reset rain Delay to %s\n", ctime(&_sdconfig_.delay24h_time));
    zc_rain_delay_enabeled();
  }
  write_cache();
}

void check_cron() {
  if (_sdconfig_.cron_update > 0) {
    logMessage(LOG_DEBUG, "Checking if CRON needs to be updated\n");
    time_t now;
    time(&now);
    if (difftime(now, _sdconfig_.cron_update) > TIMEDIFF_CRON_UPDATE) {
      logMessage(LOG_INFO, "Updating CRON\n");
      write_cron();
      _sdconfig_.cron_update = 0;
    }
  }
}

void write_cron() {
  FILE *fp;
  int min;
  int hour;
  int day;
  int zone;

  bool fs = remount_root_ro(false);

  fp = fopen(CRON_FILE, "w");
  if (fp == NULL) {
    logMessage(LOG_ERR, "Open file failed '%s'\n", CRON_FILE);
    remount_root_ro(true);
    //fprintf(stdout, "Open file failed 'sprinkler.cron'\n");
    return;
  }
  fprintf(fp, "#***** AUTO GENERATED DO NOT EDIT *****\n");

  for (day=0; day <= 6; day++) {
    if (_sdconfig_.cron[day].hour >= 0 && _sdconfig_.cron[day].minute >= 0) {
      //length += sprintf(buffer+length, ", \"d%d-starttime\" : \"%.2d:%.2d\" ",day,_sdconfig_.cron[day].hour,_sdconfig_.cron[day].minute);
      min = _sdconfig_.cron[day].minute;
      hour = _sdconfig_.cron[day].hour;
      for (zone=0; zone < _sdconfig_.zones; zone ++) {
        if (_sdconfig_.cron[day].zruntimes[zone] > 0) {
          fprintf(fp, "%d %d * * %d root /usr/bin/curl -s -o /dev/null 'localhost:%s?type=cron&zone=%d&runtime=%d&state=on'\n",min,hour,day,_sdconfig_.socket_port,zone+1,_sdconfig_.cron[day].zruntimes[zone]);
          //fprintf(fp, "%d %d * * %d root /usr/bin/curl -s -o /dev/null 'localhost?type=cron&zone=%d&runtime=%d&state=on'\n",min,hour,day,zone+1,_sdconfig_.cron[day].zruntimes[zone]);
          min = min + _sdconfig_.cron[day].zruntimes[zone];
          // NSF Check if to incrument hour.
          if (min >= 60) {
            min = min-60;
            hour = hour+1;
          }
          if (hour >= 24) {
            logMessage(LOG_ERR, "DON'T SUPPORT ZONES RUNTIMES GOING INTO NEXT DAY\n");
            break;
          }
        }
      }
    }
  }
  fprintf(fp, "0 0 * * * root /usr/bin/curl -s -o /dev/null 'localhost:%s?type=sensor&sensor=chanceofrain&value=0'\n",_sdconfig_.socket_port);
  fprintf(fp, "0 0 * * * root /usr/bin/curl -s -o /dev/null 'localhost:%s?type=sensor&sensor=raintotal&value=0'\n",_sdconfig_.socket_port);
  fprintf(fp, "#***** AUTO GENERATED DO NOT EDIT *****\n");
  fclose(fp);

  remount_root_ro(fs);
}

void read_cron() {
  FILE *fp;
  //int i;
  char *line = NULL;
  int rc;
  int hour;
  int minute;
  int day;
  int zone;
  int runtime;
  size_t len = 0;
  ssize_t read_size;
  regex_t regexCompiled;
  //char regexString="([0-9]*) ([0-9]*) \* \* ([0-9]*) .*zone&z([0-9]*).*runtime=([0-9]*).*";
  //char *regexString="([0-9]{1,2}) ([0-9]{1,2}) \\* \\* ([0-9]{1,2}) .*zone&z([0-9]{1,2}).*runtime=([0-9]{1,2}).*";
  //char *regexString="([0-9]*)\\s([0-9]*)\\s.*\\s([0-9]*)\\s.*zone&z([0-9]*).*runtime=([0-9]*).*$";
  //char *regexString="([0-9]*)\\s([0-9]*)\\s.*\\s([0-9]*)\\s.*zone&z([0-9]*).*runtime=([0-9]*).$";
  char *regexString="([0-9]{1,2})\\s([0-9]{1,2})\\s.*\\s([0-9]{1,2})\\s.*zone=([0-9]{1,2}).*runtime=([0-9]{1,2}).*$";
  size_t maxGroups = 7;
  regmatch_t groupArray[maxGroups];
  //static char buf[100];

  // reset cron config
  for (day=0; day <= 6; day++) {
    _sdconfig_.cron[day].hour = -1;
    _sdconfig_.cron[day].minute = -1;
    for (zone=1; zone < _sdconfig_.zones; zone ++) {
      _sdconfig_.cron[day].zruntimes[zone] = 0;
    }
  }

  if (0 != (rc = regcomp(&regexCompiled, regexString, REG_EXTENDED))) {
      //printf("regcomp() failed, returning nonzero (%d)\n", rc);
      logMessage(LOG_ERR, "regcomp() failed, returning nonzero (%d)\n", rc);
      return;
      //exit(EXIT_FAILURE);
   }

  fp = fopen(CRON_FILE, "r");
  if (fp == NULL) {
    logMessage(LOG_ERR, "Open file failed '%s'\n", CRON_FILE);
    //fprintf(stdout, "Open file failed 'sprinkler.cron'\n");
    return;
  }

  while ((read_size = getline(&line, &len, fp)) != -1) {
    //printf("Read from cron:-\n  %s", line);
    //lc++;
    //rc = regexec(&regexCompiled, line, maxGroups, groupArray, 0);
    if (0 == (rc = regexec(&regexCompiled, line, maxGroups, groupArray, REG_EXTENDED))) {
      // Group 1 is minute
      // Group 2 is hour
      // Group 3 is day of week
      // Group 4 is zone
      // Group 5 is runtime
      if (groupArray[2].rm_so == (size_t)-1) {
        logMessage(LOG_ERR, "No matching information from cron file\n");
      } else {
        minute = str2int((line + groupArray[1].rm_so), (groupArray[1].rm_eo - groupArray[1].rm_so));
        hour = str2int((line + groupArray[2].rm_so), (groupArray[2].rm_eo - groupArray[2].rm_so));
        day = str2int((line + groupArray[3].rm_so), (groupArray[3].rm_eo - groupArray[3].rm_so));
        zone = str2int((line + groupArray[4].rm_so), (groupArray[4].rm_eo - groupArray[4].rm_so));
        runtime = str2int((line + groupArray[5].rm_so), (groupArray[5].rm_eo - groupArray[5].rm_so));
        logMessage(LOG_DEBUG, "Read from cron Day %d | Time %d:%d | Zone %d | Runtime %d\n",day,hour,minute,zone,runtime);

        if (day < 7 && zone <= _sdconfig_.zones) {
          if (_sdconfig_.cron[day].hour == -1) { // Only get the first starttime
            _sdconfig_.cron[day].hour = hour;
            _sdconfig_.cron[day].minute = minute;
          }
          _sdconfig_.cron[day].zruntimes[zone-1] = runtime;
        }
      }
    } else {
      logMessage(LOG_DEBUG, "regexp no match (%d)\n", rc);
    }
  }
/*
  for (day=0; day <= 6; day++) {
    logMessage(LOG_DEBUG, "DAY %d Start time %d:%d\n",day,_sdconfig_.cron[day].hour,_sdconfig_.cron[day].minute);
    for (zone=0; zone < _sdconfig_.zones; zone ++) {
      logMessage(LOG_DEBUG, "DAY %d zone %d runtime %d\n",day,zone+1,_sdconfig_.cron[day].zruntimes[zone]);
    }
  }
*/
  fclose(fp);
}
/*
void write_cache(struct arconfig *ar_prms) {
  FILE *fp;

  fp = fopen(ar_prms->cache_file, "w");
  if (fp == NULL) {
    logMessage(LOG_ERR, "Open file failed '%s'\n", ar_prms->cache_file);
    return;
  }

  fprintf(fp, "%d\n", ar_prms->Percent);
  fprintf(fp, "%d\n", ar_prms->PPM);
  fclose(fp);
}

void read_cache(struct arconfig *ar_prms) {
  FILE *fp;
  int i;

  fp = fopen(ar_prms->cache_file, "r");
  if (fp == NULL) {
    logMessage(LOG_ERR, "Open file failed '%s'\n", ar_prms->cache_file);
    return;
  }

  fscanf (fp, "%d", &i);
  logMessage(LOG_DEBUG, "Read Percent '%d' from cache\n", i);
  if (i > -1 && i< 102)
    ar_prms->Percent = i;

  fscanf (fp, "%d", &i);
  logMessage(LOG_DEBUG, "Read PPM '%d' from cache\n", i);
  if (i > -1 && i< 5000)
    ar_prms->PPM = i;

  fclose (fp);
}
*/