/**
* get_local_timezone_ofs:
* @when: time in UTC
*
* Return the zone offset (measured in seconds) of @when expressed in local
* time. The function also takes care about daylight saving.
**/
long
get_local_timezone_ofs(time_t when)
{
#ifdef HAVE_STRUCT_TM_TM_GMTOFF
struct tm ltm;
cached_localtime(&when, <m);
return ltm.tm_gmtoff;
#else
struct tm gtm;
struct tm ltm;
long tzoff;
cached_localtime(&when, <m);
cached_gmtime(&when, >m);
tzoff = (ltm.tm_hour - gtm.tm_hour) * 3600;
tzoff += (ltm.tm_min - gtm.tm_min) * 60;
tzoff += ltm.tm_sec - gtm.tm_sec;
if (tzoff > 0 && (ltm.tm_year < gtm.tm_year || ltm.tm_mon < gtm.tm_mon || ltm.tm_mday < gtm.tm_mday))
tzoff -= 86400;
else if (tzoff < 0 && (ltm.tm_year > gtm.tm_year || ltm.tm_mon > gtm.tm_mon || ltm.tm_mday > gtm.tm_mday))
tzoff += 86400;
return tzoff;
#endif /* HAVE_STRUCT_TM_TM_GMTOFF */
}
static gboolean
_parse_timestamp(SnmpTrapdHeaderParser *self)
{
GTimeVal now;
cached_g_current_time(&now);
time_t now_tv_sec = (time_t) now.tv_sec;
LogStamp *stamp = &self->nv_context->msg->timestamps[LM_TS_STAMP];
stamp->tv_usec = 0;
stamp->zone_offset = -1;
/* NOTE: we initialize various unportable fields in tm using a
* localtime call, as the value of tm_gmtoff does matter but it does
* not exist on all platforms and 0 initializing it causes trouble on
* time-zone barriers */
struct tm tm;
cached_localtime(&now_tv_sec, &tm);
if (!scan_std_timestamp(self->input, (gint *)self->input_len, &tm))
return FALSE;
tm.tm_isdst = -1;
stamp->tv_sec = cached_mktime(&tm);
stamp->zone_offset = get_local_timezone_ofs(stamp->tv_sec);
return TRUE;
}
static gchar *
msg_format_timestamp(gchar *buf, gsize buflen)
{
struct tm tm;
GTimeVal now;
gint len;
time_t now_sec;
g_get_current_time(&now);
now_sec = now.tv_sec;
cached_localtime(&now_sec, &tm);
len = strftime(buf, buflen, "%Y-%m-%dT%H:%M:%S", &tm);
if (len < buflen)
g_snprintf(buf + len, buflen - len, ".%06ld", now.tv_usec);
return buf;
}
static gboolean
__parse_bsd_timestamp(const guchar **data, gint *length, const GTimeVal *now, struct tm* tm, glong *usec)
{
gint left = *length;
const guchar *src = *data;
time_t now_tv_sec = (time_t) now->tv_sec;
cached_localtime(&now_tv_sec, tm);
if (__is_bsd_pix_or_asa(src, left))
{
if (!scan_pix_timestamp((const gchar **) &src, &left, tm))
return FALSE;
if (*src == ':')
{
src++;
left--;
}
}
else if (__is_bsd_linksys(src, left))
{
if (!scan_linksys_timestamp((const gchar **) &src, &left, tm))
return FALSE;
}
else if (__is_bsd_rfc_3164(src, left))
{
if (!scan_bsd_timestamp((const gchar **) &src, &left, tm))
return FALSE;
*usec = __parse_usec(&src, &left);
tm->tm_year = determine_year_for_month(tm->tm_mon, tm);
}
else
{
return FALSE;
}
*data = src;
*length = left;
return TRUE;
}
static gboolean
__parse_iso_stamp(const GTimeVal *now, LogMessage *self, struct tm* tm, const guchar **data, gint *length)
{
/* RFC3339 timestamp, expected format: YYYY-MM-DDTHH:MM:SS[.frac]<+/->ZZ:ZZ */
time_t now_tv_sec = (time_t) now->tv_sec;
const guchar *src = *data;
self->timestamps[LM_TS_STAMP].tv_usec = 0;
/* NOTE: we initialize various unportable fields in tm using a
* localtime call, as the value of tm_gmtoff does matter but it does
* not exist on all platforms and 0 initializing it causes trouble on
* time-zone barriers */
cached_localtime(&now_tv_sec, tm);
if (!scan_iso_timestamp((const gchar **) &src, length, tm))
{
return FALSE;
}
self->timestamps[LM_TS_STAMP].tv_usec = __parse_usec(&src, length);
if (*length > 0 && *src == 'Z')
{
/* Z is special, it means UTC */
self->timestamps[LM_TS_STAMP].zone_offset = 0;
src++;
(*length)--;
}
else if (__has_iso_timezone(src, *length))
{
self->timestamps[LM_TS_STAMP].zone_offset = __parse_iso_timezone(&src, length);
}
*data = src;
return TRUE;
}
/* FIXME: this function should really be exploded to a lot of smaller functions... (Bazsi) */
static gboolean
log_msg_parse_date(LogMessage *self, const guchar **data, gint *length, guint parse_flags, glong assume_timezone)
{
const guchar *src = *data;
gint left = *length;
GTimeVal now;
struct tm tm;
gint unnormalized_hour;
cached_g_current_time(&now);
if ((parse_flags & LP_SYSLOG_PROTOCOL) == 0)
{
/* Cisco timestamp extensions, the first '*' indicates that the clock is
* unsynced, '.' if it is known to be synced */
if (G_UNLIKELY(src[0] == '*'))
{
log_msg_set_value(self, is_synced, "0", 1);
src++;
left--;
}
else if (G_UNLIKELY(src[0] == '.'))
{
log_msg_set_value(self, is_synced, "1", 1);
src++;
left--;
}
}
/* If the next chars look like a date, then read them as a date. */
if (left >= 19 && src[4] == '-' && src[7] == '-' && src[10] == 'T' && src[13] == ':' && src[16] == ':')
{
/* RFC3339 timestamp, expected format: YYYY-MM-DDTHH:MM:SS[.frac]<+/->ZZ:ZZ */
gint hours, mins;
time_t now_tv_sec = (time_t)now.tv_sec;
self->timestamps[LM_TS_STAMP].tv_usec = 0;
/* NOTE: we initialize various unportable fields in tm using a
* localtime call, as the value of tm_gmtoff does matter but it does
* not exist on all platforms and 0 initializing it causes trouble on
* time-zone barriers */
cached_localtime(&now_tv_sec, &tm);
if (!scan_iso_timestamp((const gchar **) &src, &left, &tm))
{
goto error;
}
self->timestamps[LM_TS_STAMP].tv_usec = 0;
if (left > 0 && *src == '.')
{
gulong frac = 0;
gint div = 1;
/* process second fractions */
src++;
left--;
while (left > 0 && div < 10e5 && isdigit(*src))
{
frac = 10 * frac + (*src) - '0';
div = div * 10;
src++;
left--;
}
while (isdigit(*src))
{
src++;
left--;
}
self->timestamps[LM_TS_STAMP].tv_usec = frac * (1000000 / div);
}
if (left > 0 && *src == 'Z')
{
/* Z is special, it means UTC */
self->timestamps[LM_TS_STAMP].zone_offset = 0;
src++;
left--;
}
else if (left >= 5 && (*src == '+' || *src == '-') &&
isdigit(*(src+1)) && isdigit(*(src+2)) && *(src+3) == ':' && isdigit(*(src+4)) && isdigit(*(src+5)) && !isdigit(*(src+6)))
{
/* timezone offset */
gint sign = *src == '-' ? -1 : 1;
hours = (*(src+1) - '0') * 10 + *(src+2) - '0';
mins = (*(src+4) - '0') * 10 + *(src+5) - '0';
self->timestamps[LM_TS_STAMP].zone_offset = sign * (hours * 3600 + mins * 60);
src += 6;
left -= 6;
}
/* we convert it to UTC */
tm.tm_isdst = -1;
unnormalized_hour = tm.tm_hour;
self->timestamps[LM_TS_STAMP].tv_sec = cached_mktime(&tm);
}
else if ((parse_flags & LP_SYSLOG_PROTOCOL) == 0)
{
if (left >= 21 && src[3] == ' ' && src[6] == ' ' && src[11] == ' ' && src[14] == ':' && src[17] == ':' && (src[20] == ':' || src[20] == ' ') &&
(isdigit(src[7]) && isdigit(src[8]) && isdigit(src[9]) && isdigit(src[10])))
{
/* PIX timestamp, expected format: MMM DD YYYY HH:MM:SS: */
/* ASA timestamp, expected format: MMM DD YYYY HH:MM:SS */
time_t now_tv_sec = (time_t)now.tv_sec;
cached_localtime(&now_tv_sec, &tm);
if (!scan_pix_timestamp((const gchar **) &src, &left, &tm))
goto error;
if (*src == ':')
{
src++;
left--;
}
tm.tm_isdst = -1;
/* NOTE: no timezone information in the message, assume it is local time */
unnormalized_hour = tm.tm_hour;
self->timestamps[LM_TS_STAMP].tv_sec = cached_mktime(&tm);
self->timestamps[LM_TS_STAMP].tv_usec = 0;
}
else if (left >= 21 && src[3] == ' ' && src[6] == ' ' && src[9] == ':' && src[12] == ':' && src[15] == ' ' &&
isdigit(src[16]) && isdigit(src[17]) && isdigit(src[18]) && isdigit(src[19]) && isspace(src[20]))
{
/* LinkSys timestamp, expected format: MMM DD HH:MM:SS YYYY */
time_t now_tv_sec = (time_t)now.tv_sec;
cached_localtime(&now_tv_sec, &tm);
if (!scan_linksys_timestamp((const gchar **) &src, &left, &tm))
goto error;
tm.tm_isdst = -1;
/* NOTE: no timezone information in the message, assume it is local time */
unnormalized_hour = tm.tm_hour;
self->timestamps[LM_TS_STAMP].tv_sec = cached_mktime(&tm);
self->timestamps[LM_TS_STAMP].tv_usec = 0;
}
else if (left >= 15 && src[3] == ' ' && src[6] == ' ' && src[9] == ':' && src[12] == ':')
{
/* RFC 3164 timestamp, expected format: MMM DD HH:MM:SS ... */
struct tm nowtm;
glong usec = 0;
time_t now_tv_sec = (time_t)now.tv_sec;
cached_localtime(&now_tv_sec, &nowtm);
tm = nowtm;
if (!scan_bsd_timestamp((const gchar **) &src, &left, &tm))
goto error;
if (left > 0 && src[0] == '.')
{
gulong frac = 0;
gint div = 1;
gint i = 1;
/* gee, funny Cisco extension, BSD timestamp with fraction of second support */
while (i < left && div < 10e5 && isdigit(src[i]))
{
frac = 10 * frac + (src[i]) - '0';
div = div * 10;
i++;
}
while (i < left && isdigit(src[i]))
i++;
usec = frac * (1000000 / div);
left -= i;
src += i;
}
/* detect if the message is coming from last year. If current
* month is January, and the message comes from December, the
* year of the message is inferred to be last year.
* Conversely, if current month is December, and message comes
* from January, year of message is inferred to be next year.
*/
if (tm.tm_mon == 11 && nowtm.tm_mon == 0)
tm.tm_year--;
else if (tm.tm_mon == 0 && nowtm.tm_mon == 11)
tm.tm_year++;
/* NOTE: no timezone information in the message, assume it is local time */
unnormalized_hour = tm.tm_hour;
self->timestamps[LM_TS_STAMP].tv_sec = cached_mktime(&tm);
self->timestamps[LM_TS_STAMP].tv_usec = usec;
}
else
{
goto error;
}
}
else
{
if (left >= 1 && src[0] == '-')
{
/* NILVALUE */
self->timestamps[LM_TS_STAMP] = self->timestamps[LM_TS_RECVD];
*length = --left;
*data = ++src;
return TRUE;
}
else
return FALSE;
}
/* NOTE: mktime() returns the time assuming that the timestamp we
* received was in local time. This is not true, as there's a
* zone_offset in the timestamp as well. We need to adjust this offset
* by adding the local timezone offset at the specific time to get UTC,
* which means that tv_sec becomes as if tm was in the 00:00 timezone.
* Also we have to take into account that at the zone barriers an hour
* might be skipped or played twice this is what the
* (tm.tm_hour - * unnormalized_hour) part fixes up. */
if (self->timestamps[LM_TS_STAMP].zone_offset == -1)
{
self->timestamps[LM_TS_STAMP].zone_offset = assume_timezone;
}
if (self->timestamps[LM_TS_STAMP].zone_offset == -1)
{
self->timestamps[LM_TS_STAMP].zone_offset = get_local_timezone_ofs(self->timestamps[LM_TS_STAMP].tv_sec);
}
self->timestamps[LM_TS_STAMP].tv_sec = self->timestamps[LM_TS_STAMP].tv_sec +
get_local_timezone_ofs(self->timestamps[LM_TS_STAMP].tv_sec) -
(tm.tm_hour - unnormalized_hour) * 3600 - self->timestamps[LM_TS_STAMP].zone_offset;
*data = src;
*length = left;
return TRUE;
error:
/* no recognizable timestamp, use current time */
self->timestamps[LM_TS_STAMP] = self->timestamps[LM_TS_RECVD];
return FALSE;
}
/* standard strptime() doesn't support %z / %Z properly on all
* platforms, especially those that don't have tm_gmtoff/tm_zone in
* their struct tm. This is a slightly modified NetBSD strptime() with
* some modifications and explicit zone related parameters. */
char *
strptime_with_tz(const char *buf, const char *fmt, struct tm *tm, long *tm_gmtoff, const char **tm_zone)
{
unsigned char c;
const unsigned char *bp, *ep;
int alt_format, i, split_year = 0, neg = 0, state = 0,
day_offset = -1, week_offset = 0, offs;
const char *new_fmt;
bp = (const u_char *)buf;
while (bp != NULL && (c = *fmt++) != '\0') {
/* Clear `alternate' modifier prior to new conversion. */
alt_format = 0;
i = 0;
/* Eat up white-space. */
if (isspace(c)) {
while (isspace(*bp))
bp++;
continue;
}
if (c != '%')
goto literal;
again: switch (c = *fmt++) {
case '%': /* "%%" is converted to "%". */
literal:
if (c != *bp++)
return NULL;
LEGAL_ALT(0);
continue;
/*
* "Alternative" modifiers. Just set the appropriate flag
* and start over again.
*/
case 'E': /* "%E?" alternative conversion modifier. */
LEGAL_ALT(0);
alt_format |= ALT_E;
goto again;
case 'O': /* "%O?" alternative conversion modifier. */
LEGAL_ALT(0);
alt_format |= ALT_O;
goto again;
/*
* "Complex" conversion rules, implemented through recursion.
*/
case 'c': /* Date and time, using the locale's format. */
new_fmt = _TIME_LOCALE(loc)->d_t_fmt;
state |= S_WDAY | S_MON | S_MDAY | S_YEAR;
goto recurse;
case 'D': /* The date as "%m/%d/%y". */
new_fmt = "%m/%d/%y";
LEGAL_ALT(0);
state |= S_MON | S_MDAY | S_YEAR;
goto recurse;
case 'F': /* The date as "%Y-%m-%d". */
new_fmt = "%Y-%m-%d";
LEGAL_ALT(0);
state |= S_MON | S_MDAY | S_YEAR;
goto recurse;
case 'R': /* The time as "%H:%M". */
new_fmt = "%H:%M";
LEGAL_ALT(0);
goto recurse;
case 'r': /* The time in 12-hour clock representation. */
new_fmt = _TIME_LOCALE(loc)->t_fmt_ampm;
LEGAL_ALT(0);
goto recurse;
case 'T': /* The time as "%H:%M:%S". */
new_fmt = "%H:%M:%S";
LEGAL_ALT(0);
goto recurse;
case 'X': /* The time, using the locale's format. */
new_fmt = _TIME_LOCALE(loc)->t_fmt;
goto recurse;
case 'x': /* The date, using the locale's format. */
new_fmt = _TIME_LOCALE(loc)->d_fmt;
state |= S_MON | S_MDAY | S_YEAR;
recurse:
bp = (const u_char *)strptime_with_tz((const char *)bp,
new_fmt, tm, tm_gmtoff, tm_zone);
LEGAL_ALT(ALT_E);
continue;
/*
* "Elementary" conversion rules.
*/
case 'A': /* The day of week, using the locale's form. */
case 'a':
bp = find_string(bp, &tm->tm_wday,
_TIME_LOCALE(loc)->day, _TIME_LOCALE(loc)->abday, 7);
LEGAL_ALT(0);
state |= S_WDAY;
continue;
case 'B': /* The month, using the locale's form. */
case 'b':
case 'h':
bp = find_string(bp, &tm->tm_mon,
_TIME_LOCALE(loc)->mon, _TIME_LOCALE(loc)->abmon,
12);
LEGAL_ALT(0);
state |= S_MON;
continue;
case 'C': /* The century number. */
i = 20;
bp = conv_num(bp, &i, 0, 99);
i = i * 100 - TM_YEAR_BASE;
if (split_year)
i += tm->tm_year % 100;
split_year = 1;
tm->tm_year = i;
LEGAL_ALT(ALT_E);
state |= S_YEAR;
continue;
case 'd': /* The day of month. */
case 'e':
bp = conv_num(bp, &tm->tm_mday, 1, 31);
LEGAL_ALT(ALT_O);
state |= S_MDAY;
continue;
case 'k': /* The hour (24-hour clock representation). */
LEGAL_ALT(0);
/* FALLTHROUGH */
case 'H':
bp = conv_num(bp, &tm->tm_hour, 0, 23);
LEGAL_ALT(ALT_O);
state |= S_HOUR;
continue;
case 'l': /* The hour (12-hour clock representation). */
LEGAL_ALT(0);
/* FALLTHROUGH */
case 'I':
bp = conv_num(bp, &tm->tm_hour, 1, 12);
if (tm->tm_hour == 12)
tm->tm_hour = 0;
LEGAL_ALT(ALT_O);
state |= S_HOUR;
continue;
case 'j': /* The day of year. */
i = 1;
bp = conv_num(bp, &i, 1, 366);
tm->tm_yday = i - 1;
LEGAL_ALT(0);
state |= S_YDAY;
continue;
case 'M': /* The minute. */
bp = conv_num(bp, &tm->tm_min, 0, 59);
LEGAL_ALT(ALT_O);
continue;
case 'm': /* The month. */
i = 1;
bp = conv_num(bp, &i, 1, 12);
tm->tm_mon = i - 1;
LEGAL_ALT(ALT_O);
state |= S_MON;
continue;
case 'p': /* The locale's equivalent of AM/PM. */
bp = find_string(bp, &i, _TIME_LOCALE(loc)->am_pm,
NULL, 2);
if (HAVE_HOUR(state) && tm->tm_hour > 11)
return NULL;
tm->tm_hour += i * 12;
LEGAL_ALT(0);
continue;
case 'S': /* The seconds. */
bp = conv_num(bp, &tm->tm_sec, 0, 61);
LEGAL_ALT(ALT_O);
continue;
#ifndef TIME_MAX
#define TIME_MAX INT64_MAX
#endif
case 's': /* seconds since the epoch */
{
time_t sse = 0;
uint64_t rulim = TIME_MAX;
if (*bp < '0' || *bp > '9') {
bp = NULL;
continue;
}
do {
sse *= 10;
sse += *bp++ - '0';
rulim /= 10;
} while ((sse * 10 <= TIME_MAX) &&
rulim && *bp >= '0' && *bp <= '9');
if (sse < 0 || (uint64_t)sse > TIME_MAX) {
bp = NULL;
continue;
}
cached_localtime(&sse, tm);
state |= S_YDAY | S_WDAY |
S_MON | S_MDAY | S_YEAR;
}
continue;
case 'U': /* The week of year, beginning on sunday. */
case 'W': /* The week of year, beginning on monday. */
/*
* XXX This is bogus, as we can not assume any valid
* information present in the tm structure at this
* point to calculate a real value, so just check the
* range for now.
*/
bp = conv_num(bp, &i, 0, 53);
LEGAL_ALT(ALT_O);
if (c == 'U')
day_offset = TM_SUNDAY;
else
day_offset = TM_MONDAY;
week_offset = i;
continue;
case 'w': /* The day of week, beginning on sunday. */
bp = conv_num(bp, &tm->tm_wday, 0, 6);
LEGAL_ALT(ALT_O);
state |= S_WDAY;
continue;
case 'u': /* The day of week, monday = 1. */
bp = conv_num(bp, &i, 1, 7);
tm->tm_wday = i % 7;
LEGAL_ALT(ALT_O);
state |= S_WDAY;
continue;
case 'g': /* The year corresponding to the ISO week
* number but without the century.
*/
bp = conv_num(bp, &i, 0, 99);
continue;
case 'G': /* The year corresponding to the ISO week
* number with century.
*/
do
bp++;
while (isdigit(*bp));
continue;
case 'V': /* The ISO 8601:1988 week number as decimal */
bp = conv_num(bp, &i, 0, 53);
continue;
case 'Y': /* The year. */
i = TM_YEAR_BASE; /* just for data sanity... */
bp = conv_num(bp, &i, 0, 9999);
tm->tm_year = i - TM_YEAR_BASE;
LEGAL_ALT(ALT_E);
state |= S_YEAR;
continue;
case 'y': /* The year within 100 years of the epoch. */
/* LEGAL_ALT(ALT_E | ALT_O); */
bp = conv_num(bp, &i, 0, 99);
if (split_year)
/* preserve century */
i += (tm->tm_year / 100) * 100;
else {
split_year = 1;
if (i <= 68)
i = i + 2000 - TM_YEAR_BASE;
else
i = i + 1900 - TM_YEAR_BASE;
}
tm->tm_year = i;
state |= S_YEAR;
continue;
case 'Z':
tzset();
if (strncmp((const char *)bp, gmt, 3) == 0 ||
strncmp((const char *)bp, utc, 3) == 0) {
tm->tm_isdst = 0;
*tm_gmtoff = 0;
*tm_zone = gmt;
bp += 3;
} else {
ep = find_string(bp, &i,
(const char * const *)tzname,
NULL, 2);
if (ep != NULL) {
tm->tm_isdst = i;
*tm_gmtoff = -(timezone);
*tm_zone = tzname[i];
}
bp = ep;
}
continue;
case 'z':
/*
* We recognize all ISO 8601 formats:
* Z = Zulu time/UTC
* [+-]hhmm
* [+-]hh:mm
* [+-]hh
* We recognize all RFC-822/RFC-2822 formats:
* UT|GMT
* North American : UTC offsets
* E[DS]T = Eastern : -4 | -5
* C[DS]T = Central : -5 | -6
* M[DS]T = Mountain: -6 | -7
* P[DS]T = Pacific : -7 | -8
* Military
* [A-IL-M] = -1 ... -9 (J not used)
* [N-Y] = +1 ... +12
*/
while (isspace(*bp))
bp++;
switch (*bp++) {
case 'G':
if (*bp++ != 'M')
return NULL;
/*FALLTHROUGH*/
case 'U':
if (*bp++ != 'T')
return NULL;
/*FALLTHROUGH*/
case 'Z':
tm->tm_isdst = 0;
*tm_gmtoff = 0;
*tm_zone = utc;
continue;
case '+':
neg = 0;
break;
case '-':
neg = 1;
break;
default:
--bp;
ep = find_string(bp, &i, nast, NULL, 4);
if (ep != NULL) {
*tm_gmtoff = (-5 - i) * 3600;
*tm_zone = __UNCONST(nast[i]);
bp = ep;
continue;
}
ep = find_string(bp, &i, nadt, NULL, 4);
if (ep != NULL) {
tm->tm_isdst = 1;
*tm_gmtoff = (-4 - i) * 3600;
*tm_zone = __UNCONST(nadt[i]);
bp = ep;
continue;
}
if ((*bp >= 'A' && *bp <= 'I') ||
(*bp >= 'L' && *bp <= 'Y')) {
/* Argh! No 'J'! */
if (*bp >= 'A' && *bp <= 'I')
*tm_gmtoff =
(('A' - 1) - (int)*bp) * 3600;
else if (*bp >= 'L' && *bp <= 'M')
*tm_gmtoff = ('A' - (int)*bp) * 3600;
else if (*bp >= 'N' && *bp <= 'Y')
*tm_gmtoff = ((int)*bp - 'M') * 3600;
*tm_zone = utc; /* XXX */
bp++;
continue;
}
return NULL;
}
offs = 0;
for (i = 0; i < 4; ) {
if (isdigit(*bp)) {
offs = offs * 10 + (*bp++ - '0');
i++;
continue;
}
if (i == 2 && *bp == ':') {
bp++;
continue;
}
break;
}
switch (i) {
case 2:
offs *= 100;
break;
case 4:
i = offs % 100;
if (i >= 60)
return NULL;
/* Convert minutes into decimal */
offs = (offs / 100) * 100 + (i * 50) / 30;
break;
default:
return NULL;
}
if (neg)
offs = -offs;
tm->tm_isdst = 0; /* XXX */
*tm_gmtoff = (offs * 3600) / 100;
*tm_zone = utc; /* XXX */
continue;
/*
* Miscellaneous conversions.
*/
case 'n': /* Any kind of white-space. */
case 't':
while (isspace(*bp))
bp++;
LEGAL_ALT(0);
continue;
default: /* Unknown/unsupported conversion. */
return NULL;
}
}
if (!HAVE_YDAY(state) && HAVE_YEAR(state)) {
if (HAVE_MON(state) && HAVE_MDAY(state)) {
/* calculate day of year (ordinal date) */
tm->tm_yday = start_of_month[isleap_sum(tm->tm_year,
TM_YEAR_BASE)][tm->tm_mon] + (tm->tm_mday - 1);
state |= S_YDAY;
} else if (day_offset != -1) {
/*
* Set the date to the first Sunday (or Monday)
* of the specified week of the year.
*/
if (!HAVE_WDAY(state)) {
tm->tm_wday = day_offset;
state |= S_WDAY;
}
tm->tm_yday = (7 -
first_wday_of(tm->tm_year + TM_YEAR_BASE) +
day_offset) % 7 + (week_offset - 1) * 7 +
tm->tm_wday - day_offset;
state |= S_YDAY;
}
}
if (HAVE_YDAY(state) && HAVE_YEAR(state)) {
int isleap;
if (!HAVE_MON(state)) {
/* calculate month of day of year */
i = 0;
isleap = isleap_sum(tm->tm_year, TM_YEAR_BASE);
while (tm->tm_yday >= start_of_month[isleap][i])
i++;
if (i > 12) {
i = 1;
tm->tm_yday -= start_of_month[isleap][12];
tm->tm_year++;
}
tm->tm_mon = i - 1;
state |= S_MON;
}
if (!HAVE_MDAY(state)) {
/* calculate day of month */
isleap = isleap_sum(tm->tm_year, TM_YEAR_BASE);
tm->tm_mday = tm->tm_yday -
start_of_month[isleap][tm->tm_mon] + 1;
state |= S_MDAY;
}
if (!HAVE_WDAY(state)) {
/* calculate day of week */
i = 0;
week_offset = first_wday_of(tm->tm_year);
while (i++ <= tm->tm_yday) {
if (week_offset++ >= 6)
week_offset = 0;
}
tm->tm_wday = week_offset;
state |= S_WDAY;
}
}
return __UNCONST(bp);
}
