diff options
Diffstat (limited to 'misc.c')
| -rw-r--r-- | misc.c | 55 |
1 files changed, 54 insertions, 1 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: misc.c,v 1.126 2018/03/07 23:53:08 djm Exp $ */ +/* $OpenBSD: misc.c,v 1.127 2018/03/12 00:52:01 djm Exp $ */ /* * Copyright (c) 2000 Markus Friedl. All rights reserved. * Copyright (c) 2005,2006 Damien Miller. All rights reserved. @@ -1976,3 +1976,56 @@ atoi_err(const char *nptr, int *val) *val = (int)num; return errstr; } + +int +parse_absolute_time(const char *s, uint64_t *tp) +{ + struct tm tm; + time_t tt; + char buf[32], *fmt; + + *tp = 0; + + /* + * POSIX strptime says "The application shall ensure that there + * is white-space or other non-alphanumeric characters between + * any two conversion specifications" so arrange things this way. + */ + switch (strlen(s)) { + case 8: /* YYYYMMDD */ + fmt = "%Y-%m-%d"; + snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2s", s, s + 4, s + 6); + break; + case 12: /* YYYYMMDDHHMM */ + fmt = "%Y-%m-%dT%H:%M"; + snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2sT%.2s:%.2s", + s, s + 4, s + 6, s + 8, s + 10); + break; + case 14: /* YYYYMMDDHHMMSS */ + fmt = "%Y-%m-%dT%H:%M:%S"; + snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2sT%.2s:%.2s:%.2s", + s, s + 4, s + 6, s + 8, s + 10, s + 12); + break; + default: + return SSH_ERR_INVALID_FORMAT; + } + + memset(&tm, 0, sizeof(tm)); + if (strptime(buf, fmt, &tm) == NULL) + return SSH_ERR_INVALID_FORMAT; + if ((tt = mktime(&tm)) < 0) + return SSH_ERR_INVALID_FORMAT; + /* success */ + *tp = (uint64_t)tt; + return 0; +} + +void +format_absolute_time(uint64_t t, char *buf, size_t len) +{ + time_t tt = t > INT_MAX ? INT_MAX : t; /* XXX revisit in 2038 :P */ + struct tm tm; + + localtime_r(&tt, &tm); + strftime(buf, len, "%Y-%m-%dT%H:%M:%S", &tm); +} |