lighttpd 1.4.x https://www.lighttpd.net/
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/*
* http_date - HTTP date manipulation
*
* Copyright(c) 2015 Glenn Strauss gstrauss()gluelogic.com All rights reserved
* License: BSD 3-clause (same as lighttpd)
*/
#ifndef INCLUDED_HTTP_DATE_H
#define INCLUDED_HTTP_DATE_H
#include "first.h"
#include "sys-time.h"
#ifdef __cplusplus
extern "C" {
#endif
#define HTTP_DATE_SZ 30 /* (IMF-fixdate is 29 chars + '\0') */
uint32_t http_date_time_to_str (char *s, size_t sz, unix_time64_t t);
int http_date_if_modified_since (const char *ifmod, uint32_t ifmodlen, unix_time64_t lmtime);
/*(convenience macro to append IMF-fixdate to (buffer *))*/
#define http_date_time_append(b, t) \
do { \
if (!http_date_time_to_str(buffer_extend((b), HTTP_DATE_SZ-1), \
HTTP_DATE_SZ, (t))) \
buffer_truncate((b), (b)->used - HTTP_DATE_SZ); /*(truncate if err)*/ \
} while (0)
#ifdef __cplusplus
}
#endif
#endif