Mercurial > ~darius > hgwebdir.cgi > wh1080

annotate xreport.c @ 7:9a14029b3782

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- Wait longer (100msec) for a read, and reduce the number of retries to match. - Print out if we read OK after more than 1 attempt for diagnostic purposes.
author Daniel O'Connor <darius@dons.net.au>
date Thu, 11 Feb 2010 12:47:59 +1030
parents 9da35e705144
children
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1 /*
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2 * Report weather conditions to remote web sites.
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3 *
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4 * Greg Lehey, 14 December 2009
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5 *
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6 * $Id: xreport.c,v 1.3 2010/02/07 03:41:35 grog Exp $
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7 */
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8
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9 #include <stdlib.h>
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11 #include "wh1080.h"
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13 #define STAMPSIZE 32 /* size of time stamp to print out */
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15 struct readings current_readings; /* current data readings, our version */
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16 char reporturl [2048]; /* build up report here */
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17 time_t last_report; /* time of last report */
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19 /*
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20 * Data returned by database query, in the form we want.
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21 */
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22 struct weather_query
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23 {
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24 float inside_humidity;
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25 float inside_temp;
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26 float inside_dewpoint;
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27 float outside_humidity;
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28 float outside_temp;
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29 float outside_dewpoint;
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30 float pressure_msl;
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31 float wind_speed;
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32 float wind_gust;
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33 float wind_direction;
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34 float rain;
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35 } weather_query;
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37 /*
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38 * Update the last report time.
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39 */
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40 void update_lastreport (time_t time)
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41 {
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42 char report_time [STAMPSIZE];
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44 strftime (report_time, /* format time and date */
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45 STAMPSIZE,
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46 "%Y-%m-%d %T",
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47 localtime (&time));
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48 sprintf (mysql_querytext,
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49 "REPLACE INTO lastreport (station_id, report_id, date)\n"
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50 "VALUES (\"%s\", \"Wunderground\", \"%s\")",
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51 config.wunderground_station_id,
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52 report_time );
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53 doquery (mysql_querytext);
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54 }
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56 /*
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57 * Send information to Wunderground.
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58 *
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59 * See http://wiki.wunderground.com/index.php/PWS_-_Upload_Protocol for details
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60 * of communication protocol.
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61 *
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62 * Wunderground requires all values in archaic units, but pressures converted to
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63 * in Hg are converted back about 0.2 hPa too low. We use a different
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64 * definition, which may or may not get the in Hg right, but results in correct
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65 * conversion back to hPa.
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66 *
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67 * Return 0 on success, 1 on failure. Failure will be retried at the next
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68 * reporting interval.
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69 */
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70
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71 int really_inform_wunderground (time_t start, time_t end)
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72 {
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73 /* Care: we can't add start and end, because they'll overflow */
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74 time_t midtime = start / 2 + end / 2; /* average time of the interval */
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75 char dateutc [STAMPSIZE];
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76 int something = 0; /* set when we find something to report */
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77 int i; /* counter */
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78
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79 /* Values to report */
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80 float inside_humidity;
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81 float inside_temp;
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82 #if 0
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83 float inside_dewpoint; /* not currently used */
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84 #endif
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85 float outside_humidity;
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86 float outside_temp;
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87 float outside_dewpoint;
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88 float pressure_msl;
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89 float wind_speed;
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90 float wind_gust;
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91 float wind_direction;
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92 float rain;
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93
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94 sprintf (mysql_querytext,
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95 "SELECT AVG(inside_humidity),\n"
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96 " AVG(inside_temp),\n"
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97 " AVG(inside_dewpoint),\n"
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98 " AVG(outside_humidity),\n"
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99 " AVG(outside_temp),\n"
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100 " AVG(outside_dewpoint),\n"
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101 " AVG(pressure_msl),\n"
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102 " AVG(wind_speed),\n"
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103 " AVG(wind_gust),\n"
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104 " AVG(wind_direction)\n"
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105 "FROM observations\n"
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106 "WHERE unix_timestamp(timestamp(date,time)) >= %d\n"
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107 " AND unix_timestamp(timestamp(date, time)) <= %d\n"
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108 " AND station_id = \"%s\"\n",
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109 start,
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110 end,
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111 config.station_id );
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112
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113 if (doquery (mysql_querytext))
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114 return 1; /* failed and reported */
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115
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116 if (verbose)
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117 {
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118 strftime (dateutc, /* format time and date */
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119 STAMPSIZE,
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120 "%Y-%m-%d %T",
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121 localtime (&start));
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122 printf ("Start date:\t\t%17s\n", dateutc);
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123 strftime (dateutc, /* format time and date */
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124 STAMPSIZE,
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125 "%Y-%m-%d %T",
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126 localtime (&end));
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127 printf ("End date:\t\t%17s\n", dateutc);
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128 }
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129
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130 if (mysql_row = mysql_fetch_row (mysql_result)) /* got something */
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131 {
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132 #if 0
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133 /*
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134 * What a mess! The result of the query in in text form, and we need to convert it to float
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135 * both to reformat it and to convert units.
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136 */
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137 printf ("%s %s %s %s %s %s %s %s %s %s %s\n",
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138 mysql_row [0],
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139 mysql_row [1],
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140 mysql_row [2],
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141 mysql_row [3],
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142 mysql_row [4],
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143 mysql_row [5],
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144 mysql_row [6],
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145 mysql_row [7],
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146 mysql_row [8],
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147 mysql_row [9],
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148 mysql_row [10] );
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149 #endif
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150 /*
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151 * Any of these values may be NULL. If they all are, we don't have any data, so
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152 * wait for some to show up.
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153 */
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154 for (i = 0; i < 11; i++)
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155 if (mysql_row [i])
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156 something = 1;
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157 if (! something) /* nothing to report */
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158 return 1; /* consider a "failure" */
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159
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160 strftime (dateutc, STAMPSIZE, "%F+%H%%3a%M%%3a%S", gmtime (&midtime)); /* format time and date */
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161
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162 /* Start building up the message */
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163 sprintf (reporturl,
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164 "./wundersend "
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165 "'http://weatherstation.wunderground.com/weatherstation/updateweatherstation.php"
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166 "?ID=%s&PASSWORD=%s"
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167 "&dateutc=%s",
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168 config.wunderground_station_id,
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169 config.wunderground_passwd,
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170 dateutc );
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171
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172 /* Now find what we have to report */
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173 if (mysql_row [0])
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174 {
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175 inside_humidity = atof (mysql_row [0]);
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176 if (verbose)
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177 printf ("Inside humidity:\t%4.0f%%\n", inside_humidity);
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178 sprintf (&reporturl [strlen (reporturl)],
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179 "&indoorhumidity=%1.0f",
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180 inside_humidity );
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181 }
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182 if (mysql_row [1])
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183 {
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184 inside_temp = atof (mysql_row [1]);
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185 if (verbose)
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186 printf ("Inside temperature:\t%6.1f°\n", inside_temp);
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187 inside_temp = C_TO_F (inside_temp);
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188 sprintf (&reporturl [strlen (reporturl)],
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189 "&indoortempf=%2.1f",
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190 inside_temp );
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191 }
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192 /* mysql_row [2] is inside dewpoint, which we don't seem to be able to report */
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193 if (mysql_row [3])
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194 {
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195 outside_humidity = atof (mysql_row [3]);
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196 if (verbose)
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197 printf ("Outside humidity:\t%4.0f%%\n", outside_humidity);
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198 sprintf (&reporturl [strlen (reporturl)],
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199 "&humidity=%1.0f",
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200 outside_humidity );
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201 }
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202 if (mysql_row [4])
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203 {
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204 outside_temp = atof (mysql_row [4]);
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205 if (verbose)
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206 printf ("Outside temperature:\t%6.1f°\n", outside_temp);
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207 outside_temp = C_TO_F (atof (mysql_row [4]));
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208 sprintf (&reporturl [strlen (reporturl)],
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209 "&tempf=%2.1f",
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210 outside_temp );
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211 }
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212 if (mysql_row [5])
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213 {
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214 outside_dewpoint = atof (mysql_row [5]);
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215 if (verbose)
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216 printf ("Outside dewpoint:\t%6.1f°\n", outside_dewpoint);
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217 outside_dewpoint = C_TO_F (outside_dewpoint);
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218 sprintf (&reporturl [strlen (reporturl)],
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219 "&dewptf=%2.1f",
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220 outside_dewpoint );
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221 }
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diff changeset
222 if (mysql_row [6])
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parents:
diff changeset
223 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
224 pressure_msl = atof (mysql_row [6]);
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parents:
diff changeset
225 if (verbose)
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parents:
diff changeset
226 printf ("Sea level pressure:\t%6.1f hPa\n", pressure_msl);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
227 pressure_msl *= Wunder_hPa_TO_inHg;
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parents:
diff changeset
228 sprintf (&reporturl [strlen (reporturl)],
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
229 "&baromin=%4.4f",
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
230 pressure_msl );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
231 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
232 if (mysql_row [7])
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
233 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
234 wind_speed = atof (mysql_row [7]);
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parents:
diff changeset
235 if (verbose)
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parents:
diff changeset
236 printf ("Wind speed:\t\t%6.1f km/h\n", wind_speed);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
237 wind_speed *= KM_TO_MILES;
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parents:
diff changeset
238 sprintf (&reporturl [strlen (reporturl)],
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parents:
diff changeset
239 "&windspeedmph=%2.1f",
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parents:
diff changeset
240 wind_speed );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
241 }
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parents:
diff changeset
242 if (mysql_row [8])
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parents:
diff changeset
243 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
244 wind_gust = atof (mysql_row [8]);
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parents:
diff changeset
245 if (verbose)
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parents:
diff changeset
246 printf ("Wind gust:\t\t%6.1f km/h\n", wind_gust);
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parents:
diff changeset
247 wind_gust *= KM_TO_MILES;
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parents:
diff changeset
248 sprintf (&reporturl [strlen (reporturl)],
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parents:
diff changeset
249 "&windgustmph=%2.1f",
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parents:
diff changeset
250 wind_gust );
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parents:
diff changeset
251 }
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parents:
diff changeset
252 if (mysql_row [9]) /* wind direction */
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parents:
diff changeset
253 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
254 wind_direction = atof (mysql_row [9]);
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parents:
diff changeset
255 if (verbose)
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parents:
diff changeset
256 printf ("Wind dir:\t\t%4.0f°\n", wind_direction);
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parents:
diff changeset
257 sprintf (&reporturl [strlen (reporturl)],
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parents:
diff changeset
258 "&winddir=%1.0f",
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parents:
diff changeset
259 wind_direction );
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parents:
diff changeset
260 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
261 mysql_free_result (mysql_result);
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parents:
diff changeset
262
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
263 /*
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parents:
diff changeset
264 * Now do the rain. This is special because it has to be per hour.
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parents:
diff changeset
265 */
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parents:
diff changeset
266 start = end - SECSPERHOUR;
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parents:
diff changeset
267 sprintf (mysql_querytext,
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parents:
diff changeset
268 "SELECT SUM(rain)\n"
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parents:
diff changeset
269 "FROM observations\n"
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parents:
diff changeset
270 "WHERE unix_timestamp(timestamp(date,time)) >= %d\n"
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
271 " AND unix_timestamp(timestamp(date, time)) <= %d\n"
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parents:
diff changeset
272 " AND station_id = \"%s\"\n",
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
273 start,
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
274 end,
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
275 config.station_id );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
276
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
277 if (doquery (mysql_querytext) == 0) /* succeeded */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
278 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
279 if ((mysql_row = mysql_fetch_row (mysql_result)) /* got something */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
280 && mysql_row [0] ) /* and it's not NULL, */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
281 {
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
282 rain = atof (mysql_row [0]);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
283 if (verbose)
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
284 printf ("Rain per hour:\t\t%6.1f mm\n", rain);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
285 rain *= MM_TO_IN;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
286 sprintf (&reporturl [strlen (reporturl)],
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
287 "&rainin=%2.1f",
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
288 rain );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
289 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
290 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
291
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
292 sprintf (&reporturl [strlen (reporturl)],
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
293 "&softwaretype=dereel-weather&action=updateraw'" );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
294 if (verbose)
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
295 printf ("\n"); /* end out output line */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
296 if (debug)
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
297 puts (reporturl);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
298 if (update)
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
299 system (reporturl);
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
300 }
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
301 return 0;
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
302 }
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
303
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
304 void inform_wunderground ()
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
305 {
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
306 time_t now; /* and time now */
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
307
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
308 sprintf (mysql_querytext,
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
309 "SELECT unix_timestamp(date) FROM lastreport\n"
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
310 " WHERE station_id =\"%s\"\n"
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
311 " AND report_id = \"Wunderground\"",
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
312 config.wunderground_station_id );
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
313
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
314 if (doquery (mysql_querytext)) /* silently ignore errors */
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
315 return;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
316 now = time (NULL);
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
317 if (mysql_row = mysql_fetch_row (mysql_result)) /* got something */
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
318 last_report = atoi (mysql_row [0]);
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
319 else
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
320 last_report = now - config.wunderground_report_interval;
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
321 mysql_free_result (mysql_result);
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
322
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
323 /*
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
324 * Report in strict intervals.
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
325 */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
326 while ((now - last_report) >= config.wunderground_report_interval)
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
327 {
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
328 if (really_inform_wunderground (last_report, last_report + config.wunderground_report_interval))
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
329 return; /* failure, we'll retry later */
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
330 last_report += config.wunderground_report_interval;
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
331 update_lastreport (last_report);
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
332 now = time (NULL); /* time moves on */
9dab44dcb331 Initial commit of Greg's code from http://www.lemis.com/grog/tmp/wh1080.tar.gz
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
333 }
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334 }
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335
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336 void usage (char *me)
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337 {
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338 fprintf (stderr,
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339 "Usage: %s [-d] [-n] [-v] [station ID] [db user] [password] [db host] [database]\n",
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340 me);
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341 exit (1);
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342 }
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343
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344 int main (int argc, char *argv [])
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345 {
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346 time_t nextrun;
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347 time_t now;
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348
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349 if (read_config (argc, argv) < 0)
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350 usage (argv [0]);
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351
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352 if (! config.wunderground_station_id)
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353 {
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354 fprintf (stderr, "No wunderground station ID in config\n");
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355 exit (1);
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356 }
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357
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358 while (1)
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359 {
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360 inform_wunderground ();
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361 if (once) /* just run once */
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362 exit (0);
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363 /*
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364 * Informing Wunderground takes finite time. Stay on schedule.
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365 * We may end up off by a second from time to time, but we shouldn't drift.
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366 *
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367 */
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368 nextrun = last_report + config.wunderground_report_interval; /* next time to run */
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369 now = time (NULL);
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370 sleep (nextrun - now);
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371 }
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372 return 0;
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373 }