public int compare(Object o1, Object o2) {
X509Certificate cert1 = (X509Certificate) o1;
X509Certificate cert2 = (X509Certificate) o2;
/*
* if either cert certifies the target, always
* put at head of list.
*/
if (cert1.getSubjectX500Principal().equals(targetSubjectDN)) {
return -1;
}
if (cert2.getSubjectX500Principal().equals(targetSubjectDN)) {
return 1;
}
int targetDist1;
int targetDist2;
try {
X500Name targetSubjectName = X500Name.asX500Name(targetSubjectDN);
targetDist1 = Builder.targetDistance(null, cert1, targetSubjectName);
targetDist2 = Builder.targetDistance(null, cert2, targetSubjectName);
} catch (IOException e) {
if (debug != null) {
debug.println("IOException in call to Builder.targetDistance");
e.printStackTrace();
}
throw new ClassCastException("Invalid target subject distinguished name");
}
if (targetDist1 == targetDist2) return 0;
if (targetDist1 == -1) return 1;
if (targetDist1 < targetDist2) return -1;
return 1;
}
