private synchronized Map signerMap() {
if (signerMap == null) {
/*
* Snapshot signer state so it doesn't change on us. We care
* only about the asserted signatures. Verification of
* signature validity happens via the JarEntry apis.
*/
signerMap = new HashMap(verifiedSigners.size() + sigFileSigners.size());
signerMap.putAll(verifiedSigners);
signerMap.putAll(sigFileSigners);
}
return signerMap;
}
/*
* Like entries() but screens out internal JAR mechanism entries
* and includes signed entries with no ZIP data.
*/
public Enumeration<JarEntry> entries2(final JarFile jar, Enumeration e) {
final Map map = new HashMap();
map.putAll(signerMap());
final Enumeration enum_ = e;
return new Enumeration<JarEntry>() {
Enumeration signers = null;
JarEntry entry;
public boolean hasMoreElements() {
if (entry != null) {
return true;
}
while (enum_.hasMoreElements()) {
ZipEntry ze = (ZipEntry) enum_.nextElement();
if (JarVerifier.isSigningRelated(ze.getName())) {
continue;
}
entry = jar.newEntry(ze);
return true;
}
if (signers == null) {
signers = Collections.enumeration(map.keySet());
}
while (signers.hasMoreElements()) {
String name = (String) signers.nextElement();
entry = jar.newEntry(new ZipEntry(name));
return true;
}
// Any map entries left?
return false;
}
public JarEntry nextElement() {
if (hasMoreElements()) {
JarEntry je = entry;
map.remove(je.getName());
entry = null;
return je;
}
throw new NoSuchElementException();
}
};
}