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module("luci.controller.vnstat2", package.seeall)
function index()
if not nixio.fs.access("/etc/config/vnstat") then
return
end
entry({"admin", "status", "vnstat2"}, alias("admin", "status", "vnstat2", "graphs"), _("vnStat Traffic Monitor"), 90)
entry({"admin", "status", "vnstat2", "graphs"}, template("vnstat2/graphs"), _("Graphs"), 1)
entry({"admin", "status", "vnstat2", "config"}, view("vnstat2/config"), _("Configuration"), 2)
entry({"admin", "status", "vnstat2", "graph"}, call("action_graph"), nil, 3)
end
function action_graph()
local util = require "luci.util"
local param = luci.http.formvalue
local iface = param("iface")
local style = param("style")
if not iface or not style then
luci.http.status(404, "Not Found")
return
end
local style_valid = false
for _, v in ipairs({"s", "t", "5", "h", "d", "m", "y"}) do
if v == style then
style_valid = true
break
end
end
if not style_valid then
luci.http.status(404, "Not Found")
return
end
luci.http.prepare_content("image/png")
local cmd = "vnstati -i %s -%s -o -" % {
util.shellquote(iface),
util.shellquote(style)
}
local image = io.popen(cmd)
luci.http.write(image:read("*a"))
image:close()
end
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