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/*
* $Id: http_datestring.c 5147 2007-05-08 15:36:22Z ajc $
*/
/**
* \defgroup HTTPDateTime Function to generate HTTP-compliant textual time/date stamp
* (This module was lifted directly from the Citadel server source)
*
* \ingroup WebcitHttpServer
*/
/*@{*/
#include "webcit.h"
/** HTTP Months - do not translate - these are not for human consumption */
static char *httpdate_months[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
/** HTTP Weekdays - do not translate - these are not for human consumption */
static char *httpdate_weekdays[] = {
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};
/**
* \brief Supplied with a unix timestamp, generate a textual time/date stamp
* \param buf the return buffer
* \param n the size of the buffer
* \param xtime the time to format as string
*/
void http_datestring(char *buf, size_t n, time_t xtime) {
struct tm t;
long offset;
char offsign;
localtime_r(&xtime, &t);
/** Convert "seconds west of GMT" to "hours/minutes offset" */
#ifdef HAVE_STRUCT_TM_TM_GMTOFF
offset = t.tm_gmtoff;
#else
offset = timezone;
#endif
if (offset > 0) {
offsign = '+';
}
else {
offset = 0L - offset;
offsign = '-';
}
offset = ( (offset / 3600) * 100 ) + ( offset % 60 );
snprintf(buf, n, "%s, %02d %s %04d %02d:%02d:%02d %c%04ld",
httpdate_weekdays[t.tm_wday],
t.tm_mday,
httpdate_months[t.tm_mon],
t.tm_year + 1900,
t.tm_hour,
t.tm_min,
t.tm_sec,
offsign, offset
);
}
/*@}*/
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