--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pvl/config/dhcpd/model.py	Sun Jul 12 02:14:34 2009 +0300
@@ -0,0 +1,81 @@
+"""
+    Higher-level DHCP config structure model
+"""
+
+import dhcp_conf as dhcpc
+
+class Config (dhcpc.ConfFile) :
+    """
+        A full configuration file
+    """
+
+    def __init__ (self, name=dhcpc.ConfFile.DEFAULT_NAME, path=dhcpc.ConfFile.DEFAULT_PATH, 
+            settings=None, options=None, shared_network=False, subnets=None, hosts=None, comment=None
+    ) :
+        """
+            Create a full configuration file for the given settings:
+            
+            settings:       a { name: value } mappping of general settings to set
+            options:        a { opt_name: opt_value } mapping of options to set
+            shared_network: define the subnets as a shared network of the given name
+            subnets:        an iterable of Subnet's to define
+            hosts:          an iterable of Host's to define
+
+        """
+
+        dhcpc.ConfFile.__init__(self, name, path, comment=comment)
+
+        # define global settings
+        if settings :
+            self.add_params(dhcpc.Parameter(setting, value) for setting, value in settings.iteritems())
+        
+        # define global options
+        if options :
+            self.add_params(dhcpc.Option(option, value) for option, value in options.iteritems())
+        
+        # the shared-network section, or a series of subnets
+        if shared_network :
+            self.add_decl(dhcpc.SharedNetwork(shared_network, decls=subnets))
+        
+        elif subnets :
+            self.add_decls(subnets)
+        
+        # hosts section
+        if hosts :
+            self.add_decls(hosts)
+
+class Subnet (dhcpc.Subnet) :
+    """
+        A subnet declaration with a router, and optionally a dynamic address pool, and allow/deny unknown clients
+    """
+
+    def __init__ (self, subnet, router_idx=1, range=None, unknown_clients=None, comment=None) :
+        """
+            @param subnet the addr.IP representing the subnet
+            @param router_idx the subnet[index] of the default gateway
+            @param range optional (from_idx, to_idx) to define a dhcp pool
+            @param unknown_clients optional 'allow'/'deny' to set a policy for unknown clients
+        """
+        
+        # validate
+        if unknown_clients :
+            assert unknown_clients in ('allow', 'deny')
+
+        super(Subnet, self).__init__(subnet, params=[
+            dhcpc.Option("routers", subnet[router_idx]),
+            dhcpc.Parameter("range", subnet[range[0]], subnet[range[1]]) if range else None,
+            dhcpc.Parameter(unknown_clients, "unknown-clients") if unknown_clients else None,
+        ], comment=comment)
+
+
+class Host (dhcpc.Host) :
+    """
+        A host declaration with a hardware address and a IP address
+    """
+
+    def __init__ (self, hostname, mac_addr, ip_addr, comment=None) :
+        super(Host, self).__init__(hostname, params=[
+            dhcpc.Parameter("hardware ethernet", mac_addr),
+            dhcpc.Parameter("fixed-address", ip_addr)
+        ], comment=comment)
+