[DHCPCSVC][IDL] Implement DhcpRemoveDNSRegistrations()

The dnsapi.dll part is still missing.

base/services/dhcpcsvc/dhcp/api.c

@@ -251,3 +251,14 @@ done:
 
     return ret;
 }
+
+/* Function 4 */
+DWORD
+__stdcall
+Server_RemoveDNSRegistrations(
+    _In_ PDHCP_SERVER_NAME ServerName)
+{
+    DPRINT1("Server_RemoveDNSRegistrations()\n");
+    /* FIXME: Call dnsapi.DnsRemoveRegistrations() */
+    return ERROR_SUCCESS;
+}

base/services/dhcpcsvc/dhcpcsvc.c

@@ -283,6 +283,32 @@ DhcpReleaseParameters(
     return ret;
 }
 
+/*!
+ * Removes all DNS Registrations which were added by the DHCP Client
+ *
+ * \return ERROR_SUCCESS on success
+ */
+DWORD
+WINAPI
+DhcpRemoveDNSRegistrations(VOID)
+{
+    DWORD ret;
+
+    DPRINT("DhcpRemoveDNSRegistrations()\n");
+
+    RpcTryExcept
+    {
+        ret = Client_RemoveDNSRegistrations(NULL);
+    }
+    RpcExcept(EXCEPTION_EXECUTE_HANDLER)
+    {
+        ret = I_RpcMapWin32Status(RpcExceptionCode());
+    }
+    RpcEndExcept;
+
+    return ret;
+}
+
 DWORD
 APIENTRY
 DhcpStaticRefreshParams(DWORD AdapterIndex,

base/services/dhcpcsvc/dhcpcsvc.spec

@@ -28,7 +28,7 @@
 @ stub DhcpReleaseIpAddressLease
 @ stub DhcpReleaseIpAddressLeaseEx
 @ stdcall DhcpReleaseParameters(wstr)
-@ stub DhcpRemoveDNSRegistrations
+@ stdcall DhcpRemoveDNSRegistrations()
 @ stub DhcpRenewIpAddressLease
 @ stub DhcpRenewIpAddressLeaseEx
 @ stub DhcpRequestOptions

sdk/include/reactos/idl/dhcpcsvc.idl

@@ -52,4 +52,10 @@ interface dhcpcsvc
         [in] DWORD AdapterIndex,
         [in] DWORD Address,
         [in] DWORD Netmask);
+
+    /* Function 4 */
+    DWORD
+    __stdcall
+    RemoveDNSRegistrations(
+        [in, string, unique] PDHCP_SERVER_NAME ServerName);
 }