+int OCSP_check_validity(ASN1_GENERALIZEDTIME *thisupd, ASN1_GENERALIZEDTIME *nextupd, long nsec, long maxsec)
+ {
+ int ret = 1;
+ time_t t_now, t_tmp;
+ time(&t_now);
+ /* Check thisUpdate is valid and not more than nsec in the future */
+ if (!ASN1_GENERALIZEDTIME_check(thisupd))
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_THISUPDATE_FIELD);
+ ret = 0;
+ }
+ else
+ {
+ t_tmp = t_now + nsec;
+ if (X509_cmp_time(thisupd, &t_tmp) > 0)
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_NOT_YET_VALID);
+ ret = 0;
+ }
+
+ /* If maxsec specified check thisUpdate is not more than maxsec in the past */
+ if (maxsec >= 0)
+ {
+ t_tmp = t_now - maxsec;
+ if (X509_cmp_time(thisupd, &t_tmp) < 0)
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_TOO_OLD);
+ ret = 0;
+ }
+ }
+ }
+
+
+ if (!nextupd) return ret;
+
+ /* Check nextUpdate is valid and not more than nsec in the past */
+ if (!ASN1_GENERALIZEDTIME_check(nextupd))
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_NEXTUPDATE_FIELD);
+ ret = 0;
+ }
+ else
+ {
+ t_tmp = t_now - nsec;
+ if (X509_cmp_time(nextupd, &t_tmp) < 0)
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_EXPIRED);
+ ret = 0;
+ }
+ }
+
+ /* Also don't allow nextUpdate to precede thisUpdate */
+ if (ASN1_STRING_cmp(nextupd, thisupd) < 0)
+ {
+ OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE);
+ ret = 0;
+ }
+
+ return ret;
+ }