luci-mod-admin-full: limit dns cachesize to 10000

[project/luci.git] / modules / luci-mod-admin-full / luasrc / model / cbi / admin_network / dhcp.lua

diff --git a/modules/luci-mod-admin-full/luasrc/model/cbi/admin_network/dhcp.lua b/modules/luci-mod-admin-full/luasrc/model/cbi/admin_network/dhcp.lua
index c7d330e..fbde431 100644 (file)
--- a/modules/luci-mod-admin-full/luasrc/model/cbi/admin_network/dhcp.lua
+++ b/modules/luci-mod-admin-full/luasrc/model/cbi/admin_network/dhcp.lua
@@ -2,6 +2,7 @@
 -- Licensed to the public under the Apache License 2.0.
 
 local ipc = require "luci.ip"
+local sys = require "luci.sys"
 local o
 require "luci.util"
 
@@ -114,7 +115,7 @@ s:taboption("advanced", Flag, "nonegcache",
 s:taboption("advanced", Value, "serversfile",
        translate("Additional servers file"),
        translate("This file may contain lines like 'server=/domain/1.2.3.4' or 'server=1.2.3.4' for"..
-               "domain-specific or full upstream <abbr title=\"Domain Name System\">DNS</abbr> servers."))
+               "domain-specific or full upstream <abbr title=\"Domain Name System\">DNS</abbr> servers."))
 
 s:taboption("advanced", Flag, "strictorder",
        translate("Strict order"),
@@ -211,6 +212,12 @@ cq.optional = true
 cq.datatype = "uinteger"
 cq.placeholder = 150
 
+cs = s:taboption("advanced", Value, "cachesize",
+       translate("Size of DNS query cache"),
+       translate("Number of cached DNS entries (max is 10000, 0 is no caching)"))
+cs.optional = true
+cs.datatype = "range(0,10000)"
+cs.placeholder = 150
 
 s:taboption("tftp", Flag, "enable_tftp",
        translate("Enable TFTP server")).optional = true
@@ -263,8 +270,8 @@ s = m:section(TypedSection, "host", translate("Static Leases"),
                "DHCP clients. They are also required for non-dynamic interface configurations where " ..
                "only hosts with a corresponding lease are served.") .. "<br />" ..
        translate("Use the <em>Add</em> Button to add a new lease entry. The <em>MAC-Address</em> " ..
-               "indentifies the host, the <em>IPv4-Address</em> specifies to the fixed address to " ..
-               "use and the <em>Hostname</em> is assigned as symbolic name to the requesting host. " ..
+               "indentifies the host, the <em>IPv4-Address</em> specifies the fixed address to " ..
+               "use, and the <em>Hostname</em> is assigned as a symbolic name to the requesting host. " ..
                "The optional <em>Lease time</em> can be used to set non-standard host-specific " ..
                "lease time, e.g. 12h, 3d or infinite."))
 
@@ -273,7 +280,7 @@ s.anonymous = true
 s.template = "cbi/tblsection"
 
 name = s:option(Value, "name", translate("Hostname"))
-name.datatype = "hostname"
+name.datatype = "hostname('strict')"
 name.rmempty  = true
 
 function name.write(self, section, value)
@@ -294,14 +301,27 @@ ip = s:option(Value, "ip", translate("<abbr title=\"Internet Protocol Version 4\
 ip.datatype = "or(ip4addr,'ignore')"
 
 time = s:option(Value, "leasetime", translate("Lease time"))
-time.rmempty  = true
+time.rmempty = true
+
+duid = s:option(Value, "duid", translate("<abbr title=\"The DHCP Unique Identifier\">DUID</abbr>"))
+duid.datatype = "and(rangelength(20,36),hexstring)"
+fp = io.open("/var/hosts/odhcpd")
+if fp then
+       for line in fp:lines() do
+               local net_val, duid_val = string.match(line, "# (%S+)%s+(%S+)")
+               if duid_val then
+                       duid:value(duid_val, duid_val)
+               end
+       end
+       fp:close()
+end
 
 hostid = s:option(Value, "hostid", translate("<abbr title=\"Internet Protocol Version 6\">IPv6</abbr>-Suffix (hex)"))
 
-ipc.neighbors({ family = 4 }, function(n)
-       if n.mac and n.dest then
-               ip:value(n.dest:string())
-               mac:value(n.mac, "%s (%s)" %{ n.mac, n.dest:string() })
+sys.net.host_hints(function(m, v4, v6, name)
+       if m and v4 then
+               ip:value(v4)
+               mac:value(m, "%s (%s)" %{ m, name or v4 })
        end
 end)