/*
* What value of "tz" was in effect back then at "time" in the
* local timezone?
*/
static int local_tzoffset(timestamp_t time)
{
time_t t, t_local;
struct tm tm;
int offset, eastwest;
if (date_overflows(time))
die("Timestamp too large for this system: %"PRItime, time);
t = (time_t)time;
localtime_r(&t, &tm);
t_local = tm_to_time_t(&tm);
if (t_local == -1)
return 0; /* error; just use +0000 */
if (t_local < t) {
eastwest = -1;
offset = t - t_local;
} else {
eastwest = 1;
offset = t_local - t;
}
offset /= 60; /* in minutes */
offset = (offset % 60) + ((offset / 60) * 100);
return offset * eastwest;
}
const char *show_ident_date(const struct ident_split *ident,
enum date_mode mode)
{
unsigned long date = 0;
long tz = 0;
if (ident->date_begin && ident->date_end)
date = strtoul(ident->date_begin, NULL, 10);
if (date_overflows(date))
date = 0;
else {
if (ident->tz_begin && ident->tz_end)
tz = strtol(ident->tz_begin, NULL, 10);
if (tz >= INT_MAX || tz <= INT_MIN)
tz = 0;
}
return show_date(date, tz, mode);
}
const char *show_ident_date(const struct ident_split *ident,
const struct date_mode *mode)
{
timestamp_t date = 0;
long tz = 0;
if (ident->date_begin && ident->date_end)
date = parse_timestamp(ident->date_begin, NULL, 10);
if (date_overflows(date))
date = 0;
else {
if (ident->tz_begin && ident->tz_end)
tz = strtol(ident->tz_begin, NULL, 10);
if (tz >= INT_MAX || tz <= INT_MIN)
tz = 0;
}
return show_date(date, tz, mode);
}
static int fsck_ident(const char **ident, struct object *obj, struct fsck_options *options)
{
const char *p = *ident;
char *end;
*ident = strchrnul(*ident, '\n');
if (**ident == '\n')
(*ident)++;
if (*p == '<')
return report(options, obj, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email");
p += strcspn(p, "<>\n");
if (*p == '>')
return report(options, obj, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name");
if (*p != '<')
return report(options, obj, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email");
if (p[-1] != ' ')
return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email");
p++;
p += strcspn(p, "<>\n");
if (*p != '>')
return report(options, obj, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email");
p++;
if (*p != ' ')
return report(options, obj, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date");
p++;
if (*p == '0' && p[1] != ' ')
return report(options, obj, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date");
if (date_overflows(strtoul(p, &end, 10)))
return report(options, obj, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow");
if ((end == p || *end != ' '))
return report(options, obj, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date");
p = end + 1;
if ((*p != '+' && *p != '-') ||
!isdigit(p[1]) ||
!isdigit(p[2]) ||
!isdigit(p[3]) ||
!isdigit(p[4]) ||
(p[5] != '\n'))
return report(options, obj, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone");
p += 6;
return 0;
}
static time_t gm_time_t(timestamp_t time, int tz)
{
int minutes;
minutes = tz < 0 ? -tz : tz;
minutes = (minutes / 100)*60 + (minutes % 100);
minutes = tz < 0 ? -minutes : minutes;
if (minutes > 0) {
if (unsigned_add_overflows(time, minutes * 60))
die("Timestamp+tz too large: %"PRItime" +%04d",
time, tz);
} else if (time < -minutes * 60)
die("Timestamp before Unix epoch: %"PRItime" %04d", time, tz);
time += minutes * 60;
if (date_overflows(time))
die("Timestamp too large for this system: %"PRItime, time);
return (time_t)time;
}
static int fsck_ident(char **ident, struct object *obj, fsck_error error_func)
{
char *end;
if (**ident == '<')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - missing space before email");
*ident += strcspn(*ident, "<>\n");
if (**ident == '>')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - bad name");
if (**ident != '<')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - missing email");
if ((*ident)[-1] != ' ')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - missing space before email");
(*ident)++;
*ident += strcspn(*ident, "<>\n");
if (**ident != '>')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - bad email");
(*ident)++;
if (**ident != ' ')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - missing space before date");
(*ident)++;
if (**ident == '0' && (*ident)[1] != ' ')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - zero-padded date");
if (date_overflows(strtoul(*ident, &end, 10)))
return error_func(obj, FSCK_ERROR, "invalid author/committer line - date causes integer overflow");
if (end == *ident || *end != ' ')
return error_func(obj, FSCK_ERROR, "invalid author/committer line - bad date");
*ident = end + 1;
if ((**ident != '+' && **ident != '-') ||
!isdigit((*ident)[1]) ||
!isdigit((*ident)[2]) ||
!isdigit((*ident)[3]) ||
!isdigit((*ident)[4]) ||
((*ident)[5] != '\n'))
return error_func(obj, FSCK_ERROR, "invalid author/committer line - bad time zone");
(*ident) += 6;
return 0;
}
