webcit/fmt_date.c

   1 /*
   2  * $Id$
   3  *
   4  * Miscellaneous routines
   5  */
   6
   7 #include <ctype.h>
   8 #include <stdlib.h>
   9 #include <unistd.h>
  10 #include <stdio.h>
  11 #include <fcntl.h>
  12 #include <signal.h>
  13 #include <sys/types.h>
  14 #include <sys/wait.h>
  15 #include <sys/socket.h>
  16 #include <sys/time.h>
  17 #include <limits.h>
  18 #include <netinet/in.h>
  19 #include <netdb.h>
  20 #include <string.h>
  21 #include <pwd.h>
  22 #include <errno.h>
  23 #include <stdarg.h>
  24 #include <pthread.h>
  25 #include <signal.h>
  26 #include <sys/time.h>
  27 #include "webcit.h"
  28 #include "webserver.h"
  29
  30 typedef unsigned char byte;
  31
  32 #define FALSE 0
  33 #define TRUE 1
  34
  35 char *ascmonths[] = {
  36         "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  37         "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
  38 };
  39
  40 char *ascdays[] = {
  41         "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
  42 };
  43
  44 /*
  45  * Format a date/time stamp for output
  46  */
  47 void fmt_date(char *buf, time_t thetime, int brief)
  48 {
  49         struct tm tm;
  50         struct tm today_tm;
  51         time_t today_timet;
  52         int hour;
  53         char calhourformat[16];
  54
  55         get_preference("calhourformat", calhourformat, sizeof calhourformat);
  56
  57         today_timet = time(NULL);
  58         localtime_r(&today_timet, &today_tm);
  59
  60         localtime_r(&thetime, &tm);
  61         hour = tm.tm_hour;
  62         if (hour == 0)
  63                 hour = 12;
  64         else if (hour > 12)
  65                 hour = hour - 12;
  66
  67         buf[0] = 0;
  68
  69         if (brief) {
  70
  71                 if ((tm.tm_year == today_tm.tm_year)
  72                   &&(tm.tm_mon == today_tm.tm_mon)
  73                   &&(tm.tm_mday == today_tm.tm_mday)) {
  74                         if (!strcasecmp(calhourformat, "24")) {
  75                                 sprintf(buf, "%2d:%02d",
  76                                         tm.tm_hour, tm.tm_min
  77                                 );
  78                         }
  79                         else {
  80                                 sprintf(buf, "%2d:%02d%s",
  81                                         hour, tm.tm_min,
  82                                         ((tm.tm_hour >= 12) ? "pm" : "am")
  83                                 );
  84                         }
  85                 }
  86                 else {
  87                         sprintf(buf, "%s %d %d",
  88                                 ascmonths[tm.tm_mon],
  89                                 tm.tm_mday,
  90                                 tm.tm_year + 1900
  91                         );
  92                 }
  93         }
  94         else {
  95                 if (!strcasecmp(calhourformat, "24")) {
  96                         sprintf(buf, "%s %d %d %2d:%02d",
  97                                 ascmonths[tm.tm_mon],
  98                                 tm.tm_mday,
  99                                 tm.tm_year + 1900,
 100                                 tm.tm_hour, tm.tm_min
 101                         );
 102                 }
 103                 else {
 104                         sprintf(buf, "%s %d %d %2d:%02d%s",
 105                                 ascmonths[tm.tm_mon],
 106                                 tm.tm_mday,
 107                                 tm.tm_year + 1900,
 108                                 hour, tm.tm_min, ((tm.tm_hour >= 12) ? "pm" : "am")
 109                         );
 110                 }
 111         }
 112 }
 113
 114
 115
 116 /*
 117  * Format TIME ONLY for output
 118  */
 119 void fmt_time(char *buf, time_t thetime)
 120 {
 121         struct tm *tm;
 122         int hour;
 123         char calhourformat[16];
 124
 125         get_preference("calhourformat", calhourformat, sizeof calhourformat);
 126
 127         buf[0] = 0;
 128         tm = localtime(&thetime);
 129         hour = tm->tm_hour;
 130         if (hour == 0)
 131                 hour = 12;
 132         else if (hour > 12)
 133                 hour = hour - 12;
 134
 135         if (!strcasecmp(calhourformat, "24")) {
 136                 sprintf(buf, "%2d:%02d",
 137                         tm->tm_hour, tm->tm_min
 138                 );
 139         }
 140         else {
 141                 sprintf(buf, "%d:%02d%s",
 142                         hour, tm->tm_min, ((tm->tm_hour > 12) ? "pm" : "am")
 143                 );
 144         }
 145 }
 146
 147
 148
 149
 150 /*
 151  * Format a date/time stamp to the format used in HTTP headers
 152  */
 153 void httpdate(char *buf, time_t thetime)
 154 {
 155         struct tm *tm;
 156
 157         buf[0] = 0;
 158         tm = localtime(&thetime);
 159
 160         sprintf(buf, "%s, %02d %s %4d %02d:%02d:%02d",
 161                 ascdays[tm->tm_wday],
 162                 tm->tm_mday,
 163                 ascmonths[tm->tm_mon],
 164                 tm->tm_year + 1900, tm->tm_hour, tm->tm_min, tm->tm_sec);
 165 }
 166
 167
 168
 169
 170