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-rw-r--r--common/asn1.c332
1 files changed, 0 insertions, 332 deletions
diff --git a/common/asn1.c b/common/asn1.c
index c98d959..45d91ab 100644
--- a/common/asn1.c
+++ b/common/asn1.c
@@ -192,338 +192,6 @@ p11_asn1_encode (node_asn *asn,
return der;
}
-static int
-atoin (const char *p,
- int digits)
-{
- int ret = 0, base = 1;
- while(--digits >= 0) {
- if (p[digits] < '0' || p[digits] > '9')
- return -1;
- ret += (p[digits] - '0') * base;
- base *= 10;
- }
- return ret;
-}
-
-static int
-two_to_four_digit_year (int year)
-{
- time_t now;
- struct tm tm;
- int century, current;
-
- return_val_if_fail (year >= 0 && year <= 99, -1);
-
- /* Get the current year */
- now = time (NULL);
- return_val_if_fail (now >= 0, -1);
- if (!gmtime_r (&now, &tm))
- return_val_if_reached (-1);
-
- current = (tm.tm_year % 100);
- century = (tm.tm_year + 1900) - current;
-
- /*
- * Check if it's within 40 years before the
- * current date.
- */
- if (current < 40) {
- if (year < current)
- return century + year;
- if (year > 100 - (40 - current))
- return (century - 100) + year;
- } else {
- if (year < current && year > (current - 40))
- return century + year;
- }
-
- /*
- * If it's after then adjust for overflows to
- * the next century.
- */
- if (year < current)
- return century + 100 + year;
- else
- return century + year;
-}
-
-static int
-parse_utc_time (const char *time,
- size_t n_time,
- struct tm *when,
- int *offset)
-{
- const char *p, *e;
- int year;
-
- assert (when != NULL);
- assert (time != NULL);
- assert (offset != NULL);
-
- /* YYMMDDhhmmss.ffff Z | +0000 */
- if (n_time < 6 || n_time >= 28)
- return 0;
-
- /* Reset everything to default legal values */
- memset (when, 0, sizeof (*when));
- *offset = 0;
- when->tm_mday = 1;
-
- /* Select the digits part of it */
- p = time;
- for (e = p; *e >= '0' && *e <= '9'; ++e);
-
- if (p + 2 <= e) {
- year = atoin (p, 2);
- p += 2;
-
- /*
- * 40 years in the past is our century. 60 years
- * in the future is the next century.
- */
- when->tm_year = two_to_four_digit_year (year) - 1900;
- }
- if (p + 2 <= e) {
- when->tm_mon = atoin (p, 2) - 1;
- p += 2;
- }
- if (p + 2 <= e) {
- when->tm_mday = atoin (p, 2);
- p += 2;
- }
- if (p + 2 <= e) {
- when->tm_hour = atoin (p, 2);
- p += 2;
- }
- if (p + 2 <= e) {
- when->tm_min = atoin (p, 2);
- p += 2;
- }
- if (p + 2 <= e) {
- when->tm_sec = atoin (p, 2);
- p += 2;
- }
-
- if (when->tm_year < 0 || when->tm_year > 9999 ||
- when->tm_mon < 0 || when->tm_mon > 11 ||
- when->tm_mday < 1 || when->tm_mday > 31 ||
- when->tm_hour < 0 || when->tm_hour > 23 ||
- when->tm_min < 0 || when->tm_min > 59 ||
- when->tm_sec < 0 || when->tm_sec > 59)
- return 0;
-
- /* Make sure all that got parsed */
- if (p != e)
- return 0;
-
- /* Now the remaining optional stuff */
- e = time + n_time;
-
- /* See if there's a fraction, and discard it if so */
- if (p < e && *p == '.' && p + 5 <= e)
- p += 5;
-
- /* See if it's UTC */
- if (p < e && *p == 'Z') {
- p += 1;
-
- /* See if it has a timezone */
- } else if ((*p == '-' || *p == '+') && p + 3 <= e) {
- int off, neg;
-
- neg = *p == '-';
- ++p;
-
- off = atoin (p, 2) * 3600;
- if (off < 0 || off > 86400)
- return 0;
- p += 2;
-
- if (p + 2 <= e) {
- off += atoin (p, 2) * 60;
- p += 2;
- }
-
- /* Use TZ offset */
- if (neg)
- *offset = 0 - off;
- else
- *offset = off;
- }
-
- /* Make sure everything got parsed */
- if (p != e)
- return 0;
-
- return 1;
-}
-
-static int
-parse_general_time (const char *time,
- size_t n_time,
- struct tm *when,
- int *offset)
-{
- const char *p, *e;
-
- assert (time != NULL);
- assert (when != NULL);
- assert (offset != NULL);
-
- /* YYYYMMDDhhmmss.ffff Z | +0000 */
- if (n_time < 8 || n_time >= 30)
- return 0;
-
- /* Reset everything to default legal values */
- memset (when, 0, sizeof (*when));
- *offset = 0;
- when->tm_mday = 1;
-
- /* Select the digits part of it */
- p = time;
- for (e = p; *e >= '0' && *e <= '9'; ++e);
-
- if (p + 4 <= e) {
- when->tm_year = atoin (p, 4) - 1900;
- p += 4;
- }
- if (p + 2 <= e) {
- when->tm_mon = atoin (p, 2) - 1;
- p += 2;
- }
- if (p + 2 <= e) {
- when->tm_mday = atoin (p, 2);
- p += 2;
- }
- if (p + 2 <= e) {
- when->tm_hour = atoin (p, 2);
- p += 2;
- }
- if (p + 2 <= e) {
- when->tm_min = atoin (p, 2);
- p += 2;
- }
- if (p + 2 <= e) {
- when->tm_sec = atoin (p, 2);
- p += 2;
- }
-
- if (when->tm_year < 0 || when->tm_year > 9999 ||
- when->tm_mon < 0 || when->tm_mon > 11 ||
- when->tm_mday < 1 || when->tm_mday > 31 ||
- when->tm_hour < 0 || when->tm_hour > 23 ||
- when->tm_min < 0 || when->tm_min > 59 ||
- when->tm_sec < 0 || when->tm_sec > 59)
- return 0;
-
- /* Make sure all that got parsed */
- if (p != e)
- return 0;
-
- /* Now the remaining optional stuff */
- e = time + n_time;
-
- /* See if there's a fraction, and discard it if so */
- if (p < e && *p == '.' && p + 5 <= e)
- p += 5;
-
- /* See if it's UTC */
- if (p < e && *p == 'Z') {
- p += 1;
-
- /* See if it has a timezone */
- } else if ((*p == '-' || *p == '+') && p + 3 <= e) {
- int off, neg;
-
- neg = *p == '-';
- ++p;
-
- off = atoin (p, 2) * 3600;
- if (off < 0 || off > 86400)
- return 0;
- p += 2;
-
- if (p + 2 <= e) {
- off += atoin (p, 2) * 60;
- p += 2;
- }
-
- /* Use TZ offset */
- if (neg)
- *offset = 0 - off;
- else
- *offset = off;
- }
-
- /* Make sure everything got parsed */
- if (p != e)
- return 0;
-
- return 1;
-}
-
-static time_t
-when_and_offset_to_time_t (struct tm *when,
- int tz_offset)
-{
- time_t timet;
-
- /* A 32-bit time, cannot represent this time */
- if (sizeof (time_t) <= 4 && when->tm_year >= 138) {
- return -1;
-
- /* Convert to seconds since epoch */
- } else {
- timet = timegm (when);
- return_val_if_fail (timet >= 0, -1);
- timet += tz_offset;
- }
-
- if (!gmtime_r (&timet, when))
- return_val_if_reached (-1);
-
- return timet;
-}
-
-time_t
-p11_asn1_parse_utc (const char *time_str,
- struct tm *when)
-{
- struct tm dummy;
- int tz_offset;
- int ret;
-
- if (!when)
- when = &dummy;
-
- ret = parse_utc_time (time_str, strlen (time_str),
- when, &tz_offset);
- if (!ret)
- return -1;
-
- return when_and_offset_to_time_t (when, tz_offset);
-}
-
-time_t
-p11_asn1_parse_general (const char *time_str,
- struct tm *when)
-{
- struct tm dummy;
- int tz_offset;
- int ret;
-
- if (!when)
- when = &dummy;
-
- ret = parse_general_time (time_str, strlen (time_str),
- when, &tz_offset);
- if (!ret)
- return -1;
-
- return when_and_offset_to_time_t (when, tz_offset);
-}
-
ssize_t
p11_asn1_tlv_length (const unsigned char *data,
size_t length)
generated by cgit v1.1 at 2024-10-19 23:50:42 +0000