luci-base: add luci.sys.net.host_hints() and regenerate documentation

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

documentation/api/modules/luci.model.uci.html

@@ -903,7 +903,8 @@ Get an option or list and return values as table.
 
 
 <h3>Return value:</h3>
-UCI value
+table.  If the option was not found, you will simply get 
+		an empty table.
 
 
 
@@ -1200,7 +1201,8 @@ Boolean whether operation succeeded
 <dd>
 
  
-Set given values as list. 
+Set given values as list. Setting a list option to an empty list 
+has the same effect as deleting the option. 
 
 
 
@@ -1220,7 +1222,7 @@ Set given values as list.
 	</li>
 	
 	<li>
-	  value: UCI value
+	  value: value or table. Raw values will become a single item table.
 	</li>
 	
 </ul>

documentation/api/modules/luci.sys.net.html

@@ -241,6 +241,13 @@ Return information about available network interfaces.</td>
 Determine the names of available network interfaces.</td>
 	</tr>
 
+	<tr>
+	<td class="name" nowrap><a href="#net.host_hints">host_hints</a>&nbsp;()</td>
+	<td class="summary">
+ 
+Returns a two-dimensional table of host hints.</td>
+	</tr>
+
 	<tr>
 	<td class="name" nowrap><a href="#net.ipv4_hints">ipv4_hints</a>&nbsp;()</td>
 	<td class="summary">
@@ -393,6 +400,31 @@ Table containing all current interface names
 
 
 
+<dt><a name="net.host_hints"></a><strong>host_hints</strong>&nbsp;()</dt>
+<dd>
+
+ 
+Returns a two-dimensional table of host hints. 
+
+
+
+
+
+
+
+
+<h3>Return value:</h3>
+Table of table containing known hosts from various sources, 
+         indexed by mac address. Each subtable contains at least one 
+         of the fields "name", "ipv4" or "ipv6".
+
+
+
+</dd>
+
+
+
+
 <dt><a name="net.ipv4_hints"></a><strong>ipv4_hints</strong>&nbsp;()</dt>
 <dd>
 

modules/luci-base/luasrc/sys.lua

@@ -292,6 +292,28 @@ function net.ipv6_hints(callback)
 	end
 end
 
+function net.host_hints(callback)
+	if callback then
+		_nethints(1, function(mac, v4, v6, name)
+			if mac and mac ~= "00:00:00:00:00:00" and (v4 or v6 or name) then
+				callback(mac, v4, v6, name)
+			end
+		end)
+	else
+		local rv = { }
+		_nethints(1, function(mac, v4, v6, name)
+			if mac and mac ~= "00:00:00:00:00:00" and (v4 or v6 or name) then
+				local e = { }
+				if v4   then e.ipv4 = v4   end
+				if v6   then e.ipv6 = v6   end
+				if name then e.name = name end
+				rv[mac] = e
+			end
+		end)
+		return rv
+	end
+end
+
 function net.conntrack(callback)
 	local ok, nfct = pcall(io.lines, "/proc/net/nf_conntrack")
 	if not ok or not nfct then

modules/luci-base/luasrc/sys.luadoc

@@ -150,6 +150,16 @@ Returns a two-dimensional table of IPv6 address hints.
          [ "ip", "name" ]
 ]]
 
+---[[
+Returns a two-dimensional table of host hints.
+
+@class function
+@name net.host_hints
+@return  Table of table containing known hosts from various sources,
+         indexed by mac address. Each subtable contains at least one
+         of the fields "name", "ipv4" or "ipv6".
+]]
+
 ---[[
 Returns conntrack information