diff options
Diffstat (limited to 'env.c')
| -rw-r--r-- | env.c | 37 |
1 files changed, 32 insertions, 5 deletions
@@ -104,6 +104,35 @@ char *host_fqdn(void) return(xstrdup(tmpbuf)); } +static char *tzoffset(time_t *now) +/* calculate timezone offset */ +{ + static char offset_string[6]; + struct tm gmt, *lt; + int off; + char sign = '+'; + + gmt = *gmtime(now); + lt = localtime(now); + off = (lt->tm_hour - gmt.tm_hour) * 60 + lt->tm_min - gmt.tm_min; + if (lt->tm_year < gmt.tm_year) + off -= 24 * 60; + else if (lt->tm_year > gmt.tm_year) + off += 24 * 60; + else if (lt->tm_yday < gmt.tm_yday) + off -= 24 * 60; + else if (lt->tm_yday > gmt.tm_yday) + off += 24 * 60; + if (off < 0) { + sign = '-'; + off = -off; + } + if (off >= 24 * 60) /* should be impossible */ + off = 23 * 60 + 59; /* if not, insert silly value */ + sprintf(offset_string, "%c%02d%02d", sign, off / 60, off % 60); + return (offset_string); +} + char *rfc822timestamp(void) /* return a timestamp in RFC822 form */ { @@ -113,16 +142,14 @@ char *rfc822timestamp(void) time(&now); #ifdef HAVE_STRFTIME /* - * Conform to RFC822. UTC rather than local time because of the - * mess that %Z generates obsolete 822 syntax but %z is not - * guaranteed portable. We generate a 4-digit year here, avoiding + * Conform to RFC822. We generate a 4-digit year here, avoiding * Y2K hassles. Max length of this timestamp in an English locale * should be 29 chars. The only things that should vary by locale * are the day and month abbreviations. */ strftime(buf, sizeof(buf)-1, - "%a, %d %b %Y %H:%M:%S +0000 (UTC)", - gmtime(&now)); + "%a, %d %b %Y %H:%M:%S XXXXX (%Z)", localtime(&now)); + strncpy(strstr(buf, "XXXXX"), tzoffset(&now), 5); #else /* * This is really just a portability fallback, as the |