public synchronized boolean equals(java.lang.Object obj) {
if (!(obj instanceof Data)) return false;
Data other = (Data) obj;
if (obj == null) return false;
if (this == obj) return true;
if (__equalsCalc != null) {
return (__equalsCalc == obj);
}
__equalsCalc = obj;
boolean _equals;
_equals =
true
&& ((this.type == null && other.getType() == null)
|| (this.type != null && this.type.equals(other.getType())))
&& ((this.content == null && other.getContent() == null)
|| (this.content != null && this.content.equals(other.getContent())));
__equalsCalc = null;
return _equals;
}
private Key[] getKeys(OCPUser user, Pointer pointer) throws Exception {
Key pointerKey = new Key(pointer.getBytes());
Data data = (Data) get(pointerKey);
if (data == null) {
throw new Exception("Cannot get keys for pointer " + pointer);
}
byte[] ciphertext = data.getContent();
byte[] cleartext = user.decrypt(ciphertext);
Key[] keys = (Key[]) ds().serializer.deserialize(cleartext);
return keys;
}
public UserPublicInfo getUserPublicInfo(byte[] username) throws Exception {
String sUsername = new String(username);
UserPublicInfo upi = (UserPublicInfo) cache.get(UserPublicInfo.class, sUsername);
if (upi != null) {
return upi;
}
Key key = UserPublicInfo.getKey(this, sUsername);
Data data = (Data) get(key);
if (data == null) {
throw new Exception("Cannot get the user public info for " + sUsername);
}
upi = (UserPublicInfo) ds().serializer.deserialize(data.getContent());
cache.put(UserPublicInfo.class, sUsername, upi);
return upi;
}
public byte[] getBytes(OCPUser user, Pointer pointer) throws Exception {
// 1) retrieve the key list from pointer
Key[] keys = getKeys(user, pointer);
// 2) from each key retrieve the object
if (keys.length != user.getBackupNbr()) {
throw new Exception("nbr of keys different from user backup nbr.");
}
byte[] result = null;
// TODO : check if all bkp are identical and repair if necessary
for (int i = 0; i < keys.length; i++) {
Data data = (Data) get(keys[i]);
if (data != null) {
byte[] ciphertext = data.getContent();
byte[] cleartext = user.decrypt(ciphertext);
result = ByteUtil.sub(cleartext, 1);
break;
}
}
return result;
}
