Fix vnstat interface with latest release

luci-app-vnstat/luasrc/view/vnstat.htm

@@ -0,0 +1,83 @@
+<%#
+ Copyright 2010 Jo-Philipp Wich <jow@openwrt.org>
+ Licensed to the public under the Apache License 2.0.
+-%>
+
+<%-
+
+local fs  = require "nixio.fs"
+local sys = require "luci.sys"
+local utl = require "luci.util"
+local param = luci.http.formvalue
+
+local iface = param("iface")
+local style = param("style")
+
+style = (style and #style > 0) and style or "s"
+
+
+--
+-- render image
+--
+if iface then
+	luci.http.prepare_content("image/png")
+
+	local png = io.popen("vnstati -i %s -%s -o -" %{
+		utl.shellquote(iface),
+		utl.shellquote(style)
+	})
+
+	luci.http.write(png:read("*a"))
+	png:close()
+
+	return
+
+--
+-- update database
+--
+else
+	sys.call("vnstat -u >/dev/null 2>/dev/null")
+end
+
+-%>
+
+<%+header%>
+
+<h2 name="content"><%:VnStat Graphs%></h2>
+
+<form action="" method="get">
+
+<select name="style">
+	<option value="s"<%=(style == "s") and ' selected="selected"' or ''%>><%:Summary display%></option>
+	<option value="t"<%=(style == "t") and ' selected="selected"' or ''%>><%:Top 10 display%></option>
+	<option value="h"<%=(style == "h") and ' selected="selected"' or ''%>><%:Hourly traffic%></option>
+	<option value="d"<%=(style == "d") and ' selected="selected"' or ''%>><%:Daily traffic%></option>
+	<option value="m"<%=(style == "m") and ' selected="selected"' or ''%>><%:Monthly traffic%></option>
+</select>
+
+<input type="submit" value="<%:Update »%>" />
+
+</form>
+
+<br /><hr /><br />
+
+<div style="text-align:center">
+<%
+    for _, iface in ipairs(sys.net.devices()) do
+	if iface ~= "lo" and not iface:match("^sit.*") and not iface:match("^if.*") and not iface:match("^teql.*") and not iface:match("^tun.*") then
+         empty = false
+%>
+	<img src="<%=REQUEST_URI%>?iface=<%=iface%>&amp;style=<%=param('style')%>" alt="" />
+	<br /><br />
+<%
+	end
+   end
+%>
+
+<% if empty then %>
+<p><em><%:No database has been set up yet. Go to the VnStat configuration and enable monitoring for one or more interfaces.%></em></p>
+<% end %>
+
+</div>
+
+<%+footer%>