github-mirrors/DependencyCheck
1
0
Fork 0
mirror of https://github.com/ysoftdevs/DependencyCheck.git synced 2026-01-14 07:43:40 +01:00
Code Issues Packages Projects Releases Wiki Activity

Added logic to optionally prevent overly repetitive checks for NVD CVE changes.

Browse Source
This commit is contained in:
Anthony Whitford
2015-10-21 23:23:47 -07:00
parent cd5bf85245
commit 1f6168366b
1 changed files with 34 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
dependency-check-core/src/main/java/org/owasp/dependencycheck/data/update/NvdCveUpdater.java
View File

@@ -66,9 +66,11 @@ public class NvdCveUpdater extends BaseUpdater implements CachedWebDataSource {
public void update() throws UpdateException {
try {
openDataStores();
final UpdateableNvdCve updateable = getUpdatesNeeded();
if (updateable.isUpdateNeeded()) {
performUpdate(updateable);
if (checkUpdate()) {
final UpdateableNvdCve updateable = getUpdatesNeeded();
if (updateable.isUpdateNeeded()) {
performUpdate(updateable);
}
}
} catch (MalformedURLException ex) {
LOGGER.warn(
@@ -87,6 +89,35 @@ public class NvdCveUpdater extends BaseUpdater implements CachedWebDataSource {
}
}
/**
* Checks if the NVD CVE XML files were last checked recently.
* As an optimization, we can avoid repetitive checks against the NVD.
* Setting CVE_CHECK_VALID_FOR_HOURS determines the duration since last check before checking again.
* A database property stores the timestamp of the last check.
*
* @return true to proceed with the check, or false to skip.
*/
private boolean checkUpdate () throws UpdateException {
boolean proceed = true;
// If the valid setting has not been specified, then we proceed to check...
final int validForHours = Settings.getInt(Settings.KEYS.CVE_CHECK_VALID_FOR_HOURS, 0);
if (0 < validForHours) {
// ms Valid = valid (hours) x 60 min/hour x 60 sec/min x 1000 ms/sec
final long msValid = validForHours * 60L * 60L * 1000L;
final long lastChecked = Long.parseLong(getProperties().getProperty(DatabaseProperties.LAST_CHECKED, "0"));
final long now = System.currentTimeMillis();
proceed = (now - lastChecked) > msValid;
if (proceed) {
getProperties().save(DatabaseProperties.LAST_CHECKED, Long.toString(now));
} else {
LOGGER.info("Skipping NVD check since last check was within {} hours.", validForHours);
LOGGER.debug("Last NVD was at {}, and now {} is within {} ms.",
lastChecked, now, msValid);
}
}
return proceed;
}
/**
* Downloads the latest NVD CVE XML file from the web and imports it into the current CVE Database.
*