| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #include "../libnetdata.h" |
| 4 | |
| 5 | inline size_t rfc7231_datetime(char *buffer, size_t len, time_t now_t) { |
| 6 | if (unlikely(!buffer || !len)) |
| 7 | return 0; |
| 8 | |
| 9 | struct tm *tmp, tmbuf; |
| 10 | |
| 11 | // Use gmtime_r for UTC time conversion. |
| 12 | tmp = gmtime_r(&now_t, &tmbuf); |
| 13 | |
| 14 | if (unlikely(!tmp)) { |
| 15 | buffer[0] = '\0'; |
| 16 | return 0; |
| 17 | } |
| 18 | |
| 19 | // Format the date and time according to the RFC 7231 format. |
| 20 | size_t ret = strftime(buffer, len, "%a, %d %b %Y %H:%M:%S GMT", tmp); |
| 21 | if (unlikely(ret == 0)) |
| 22 | buffer[0] = '\0'; |
| 23 | |
| 24 | return ret; |
| 25 | } |
| 26 | |
| 27 | size_t rfc7231_datetime_ut(char *buffer, size_t len, usec_t now_ut) { |
| 28 | return rfc7231_datetime(buffer, len, (time_t) (now_ut / USEC_PER_SEC)); |
| 29 | } |