/**
* This method checks out the acl making sure it isn't null or empty, it has valid schemes and
* ids, and expanding any relative ids that depend on the requestor's authentication information.
*
* @param authInfo list of ACL IDs associated with the client connection
* @param acl list of ACLs being assigned to the node (create or setACL operation)
* @return
*/
private boolean fixupACL(List<Id> authInfo, List<ACL> acl) {
if (skipACL) {
return true;
}
if (acl == null || acl.size() == 0) {
return false;
}
Iterator<ACL> it = acl.iterator();
LinkedList<ACL> toAdd = null;
while (it.hasNext()) {
ACL a = it.next();
Id id = a.getId();
if (id.getScheme().equals("world") && id.getId().equals("anyone")) {
// wide open
} else if (id.getScheme().equals("auth")) {
// This is the "auth" id, so we have to expand it to the
// authenticated ids of the requestor
it.remove();
if (toAdd == null) {
toAdd = new LinkedList<ACL>();
}
boolean authIdValid = false;
for (Id cid : authInfo) {
AuthenticationProvider ap = ProviderRegistry.getProvider(cid.getScheme());
if (ap == null) {
LOG.error("Missing AuthenticationProvider for " + cid.getScheme());
} else if (ap.isAuthenticated()) {
authIdValid = true;
toAdd.add(new ACL(a.getPerms(), cid));
}
}
if (!authIdValid) {
return false;
}
} else {
AuthenticationProvider ap = ProviderRegistry.getProvider(id.getScheme());
if (ap == null) {
return false;
}
if (!ap.isValid(id.getId())) {
return false;
}
}
}
if (toAdd != null) {
for (ACL a : toAdd) {
acl.add(a);
}
}
return acl.size() > 0;
}
static void checkACL(ZooKeeperServer zks, List<ACL> acl, int perm, List<Id> ids)
throws KeeperException.NoAuthException {
if (skipACL) {
return;
}
if (acl == null || acl.size() == 0) {
return;
}
for (Id authId : ids) {
if (authId.getScheme().equals("super")) {
return;
}
}
for (ACL a : acl) {
Id id = a.getId();
if ((a.getPerms() & perm) != 0) {
if (id.getScheme().equals("world") && id.getId().equals("anyone")) {
return;
}
AuthenticationProvider ap = ProviderRegistry.getProvider(id.getScheme());
if (ap != null) {
for (Id authId : ids) {
if (authId.getScheme().equals(id.getScheme())
&& ap.matches(authId.getId(), id.getId())) {
return;
}
}
}
}
}
throw new KeeperException.NoAuthException();
}