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-rw-r--r--source4/ldap_server/ldap_backend.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/source4/ldap_server/ldap_backend.c b/source4/ldap_server/ldap_backend.c
index 5a953947f3..a6697dfba8 100644
--- a/source4/ldap_server/ldap_backend.c
+++ b/source4/ldap_server/ldap_backend.c
@@ -720,6 +720,18 @@ static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
{
+ int i;
+ struct ldap_message *msg = call->request;
+ /* Check for undecoded critical extensions */
+ for (i=0; msg->controls && msg->controls[i]; i++) {
+ if (!msg->controls_decoded[i] &&
+ msg->controls[i]->critical) {
+ DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
+ msg->controls[i]->oid));
+ return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
+ }
+ }
+
switch(call->request->type) {
case LDAP_TAG_BindRequest:
return ldapsrv_BindRequest(call);