--
-- (C) 2013-16 - ntop.org
--

dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
if((dirs.scriptdir ~= nil) and (dirs.scriptdir ~= "")) then package.path = dirs.scriptdir .. "/lua/modules/?.lua;" .. package.path end

if ntop.isPro() then
   package.path = dirs.installdir .. "/scripts/lua/pro/modules/?.lua;" .. package.path
   package.path = dirs.installdir .. "/pro/scripts/callbacks/?.lua;" .. package.path
   require "common"
   local json = require "dkjson"
end

require "lua_utils"
require "prefs_utils"
require "graph_utils"
require "alert_utils"
require "db_utils"

sendHTTPHeader('text/html; charset=iso-8859-1')

page = _GET["page"]
if_name = _GET["if_name"]
ifid = (_GET["id"] or _GET["ifId"])

msg = ""

function inline_input_form(name, placeholder, tooltip, value, can_edit, input_opts, input_clss)
   print [[
    <form class="form-inline" style="margin-bottom: 0px;">
       <input type="hidden" name="id" value="]]
   print(tostring(ifstats.id))
   print('">')

   print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')

   if(can_edit) then
      print('<input style="width:12em;" title="'..tooltip..'" '..(input_opts or "")..' class="form-control '..(input_clss or "")..'" name="'..name..'" placeholder="'..placeholder..'" value="')
      if(value ~= nil) then print(value) end
      print[["></input>&nbsp;<button type="submit" style="position: absolute; margin-top: 0; height: 26px" class="btn btn-default btn-xs">Save</button>]]
   else
      if(value ~= nil) then print(value) end
   end
   print("</form>\n")
end

if(_GET["switch_interface"] ~= nil) then
-- First switch interfaces so the new cookie will have effect
ifname = interface.setActiveInterfaceId(tonumber(ifid))

--print("@"..ifname.."="..id.."@")
if((ifname ~= nil) and (_SESSION["session"] ~= nil)) then
   key = getRedisPrefix("ntopng.prefs") .. ".ifname"
   ntop.setCache(key, ifname)

   msg = "<div class=\"alert alert-success\">The selected interface <b>" .. getHumanReadableInterfaceName(ifid)
   msg = msg .. "</b> [id: ".. ifid .."] is now active</div>"

   ntop.setCache(getRedisPrefix("ntopng.prefs")..'.iface', ifid)
else
   msg = "<div class=\"alert alert-danger\"><img src=".. ntop.getHttpPrefix() .. "/img/warning.png> Error while switching interfaces</div>"
if(_SESSION["session"] == nil) then
   msg = msg .."<div class=\"alert alert-danger\"><img src=".. ntop.getHttpPrefix() .. "/img/warning.png> Empty session</div>"
end
end
end

-- parse interface names and possibly fall back to the selected interface:
-- priority goes to the interface id
if ifid ~= nil and ifid ~= "" then
   if_name = getInterfaceName(ifid)

-- if not interface id is specified we look for the interface name
elseif if_name ~= nil and if_name ~= "" then
   ifid = tostring(interface.name2id(if_name))

-- finally, we fall back to the default selected interface name
else
   -- fall-back to the default interface
   if_name = ifname
   ifid = interface.name2id(ifname)
end

interface.select(if_name)

-- local pcap dump is disabled if the nbox integration is enabled or
-- if the user is not an administrator or if the interface:
-- is a view
-- is not a packet interface (i.e., it is zmq)
is_packetdump_enabled = isLocalPacketdumpEnabled()
is_packet_interface = interface.isPacketInterface()

shaper_key = "ntopng.prefs."..ifid..".shaper_max_rate"
ifstats = interface.getStats()

if (isAdministrator()) then
   if(_GET["custom_name"] ~=nil) then
      if(_GET["csrf"] ~= nil) then
	 -- TODO move keys to new schema: replace ifstats.name with ifid
	 ntop.setCache('ntopng.prefs.'..ifstats.name..'.name',_GET["custom_name"])
      end
   end

   if(_GET["scaling_factor"] ~= nil) then
      if(_GET["csrf"] ~= nil) then
	 local sf = tonumber(_GET["scaling_factor"])
	 if(sf == nil) then sf = 1 end
	 ntop.setCache(getRedisIfacePrefix(ifid)..'.scaling_factor',tostring(sf))
	 interface.loadScalingFactorPrefs()
      end
   end

   if is_packetdump_enabled then
      if(_GET["dump_all_traffic"] ~= nil and _GET["csrf"] ~= nil) then
	 page = "packetdump"
	 ntop.setCache('ntopng.prefs.'..ifstats.name..'.dump_all_traffic',_GET["dump_all_traffic"])
      end
      if(_GET["dump_traffic_to_tap"] ~= nil and _GET["csrf"] ~= nil) then
	 page = "packetdump"
	 ntop.setCache('ntopng.prefs.'..ifstats.name..'.dump_tap',_GET["dump_traffic_to_tap"])
      end
      if(_GET["dump_traffic_to_disk"] ~= nil and _GET["csrf"] ~= nil) then
	 page = "packetdump"
	 ntop.setCache('ntopng.prefs.'..ifstats.name..'.dump_disk',_GET["dump_traffic_to_disk"])
      end
      if(_GET["dump_unknown_to_disk"] ~= nil and _GET["csrf"] ~= nil) then
	 page = "packetdump"
	 ntop.setCache('ntopng.prefs.'..ifstats.name..'.dump_unknown_disk',_GET["dump_unknown_to_disk"])
      end
      if(_GET["dump_security_to_disk"] ~= nil and _GET["csrf"] ~= nil) then
	 page = "packetdump"
	 ntop.setCache('ntopng.prefs.'..ifstats.name..'.dump_security_disk',_GET["dump_security_to_disk"])
      end

      if(_GET["sampling_rate"] ~= nil and _GET["csrf"] ~= nil) then
	 if(tonumber(_GET["sampling_rate"]) ~= nil) then
	    page = "packetdump"
	    val = ternary(_GET["sampling_rate"] ~= "0", _GET["sampling_rate"], "1")
	    ntop.setCache('ntopng.prefs.'..ifstats.name..'.dump_sampling_rate', val)
	 end
      end
      if(_GET["max_pkts_file"] ~= nil and _GET["csrf"] ~= nil) then
	 if(tonumber(_GET["max_pkts_file"]) ~= nil) then
	    page = "packetdump"
	    ntop.setCache('ntopng.prefs.'..ifstats.name..'.dump_max_pkts_file',_GET["max_pkts_file"])
	 end
      end
      if(_GET["max_sec_file"] ~= nil and _GET["csrf"] ~= nil) then
	 if(tonumber(_GET["max_sec_file"]) ~= nil) then
	    page = "packetdump"
	    ntop.setCache('ntopng.prefs.'..ifstats.name..'.dump_max_sec_file',_GET["max_sec_file"])
	 end
      end
      if(_GET["max_files"] ~= nil and _GET["csrf"] ~= nil) then
	 if(tonumber(_GET["max_files"]) ~= nil) then
	    page = "packetdump"
	    local max_files_size = tonumber(_GET["max_files"])
	    max_files_size = max_files_size * 1000000
	    ntop.setCache('ntopng.prefs.'..ifstats.name..'.dump_max_files', tostring(max_files_size))
	 end
      end
      interface.loadDumpPrefs()
   end
end

ntop.dumpFile(dirs.installdir .. "/httpdocs/inc/header.inc")

print("<link href=\""..ntop.getHttpPrefix().."/css/tablesorted.css\" rel=\"stylesheet\">")
active_page = "if_stats"

dofile(dirs.installdir .. "/scripts/lua/inc/menu.lua")

print(msg)

rrdname = fixPath(dirs.workingdir .. "/" .. ifstats.id .. "/rrd/bytes.rrd")

url = ntop.getHttpPrefix()..'/lua/if_stats.lua?id=' .. ifid

--  Added global javascript variable, in order to disable the refresh of pie chart in case
--  of historical interface
print('\n<script>var refresh = 3000 /* ms */;</script>\n')

print [[
  <nav class="navbar navbar-default" role="navigation">
  <div class="navbar-collapse collapse">
    <ul class="nav navbar-nav">
]]

short_name = getHumanReadableInterfaceName(if_name)

if(short_name ~= if_name) then
   short_name = short_name .. "..."
end

print("<li><a href=\"#\">Interface: " .. short_name .."</a></li>\n")

if((page == "overview") or (page == nil)) then
   print("<li class=\"active\"><a href=\"#\"><i class=\"fa fa-home fa-lg\"></i></a></li>\n")
else
   print("<li><a href=\""..url.."&page=overview\"><i class=\"fa fa-home fa-lg\"></i></a></li>")
end

-- Disable Packets and Protocols tab in case of the number of packets is equal to 0
if((ifstats ~= nil) and (ifstats.stats.packets > 0)) then
   if(ifstats.type ~= "zmq") then
      if(page == "packets") then
	 print("<li class=\"active\"><a href=\"#\">Packets</a></li>\n")
      else
	 print("<li><a href=\""..url.."&page=packets\">Packets</a></li>")
      end
   end

   if(page == "ndpi") then
      print("<li class=\"active\"><a href=\"#\">Protocols</a></li>\n")
   else
      print("<li><a href=\""..url.."&page=ndpi\">Protocols</a></li>")
   end
end

if(ntop.exists(rrdname) and not is_historical) then
   if(page == "historical") then
      print("<li class=\"active\"><a href=\""..url.."&page=historical\"><i class='fa fa-area-chart fa-lg'></i></a></li>")
   else
      print("<li><a href=\""..url.."&page=historical\"><i class='fa fa-area-chart fa-lg'></i></a></li>")
   end
end


if(table.len(ifstats.profiles) > 0) then
  if(page == "trafficprofiles") then
    print("<li class=\"active\"><a href=\""..url.."&page=trafficprofiles\"><i class=\"fa fa-user-md fa-lg\"></i></a></li>")
  else
    print("<li><a href=\""..url.."&page=trafficprofiles\"><i class=\"fa fa-user-md fa-lg\"></i></a></li>")
  end
end

if is_packetdump_enabled then
   if(page == "packetdump") then
      print("<li class=\"active\"><a href=\""..url.."&page=packetdump\"><i class=\"fa fa-hdd-o fa-lg\"></i></a></li>")
   else
      print("<li><a href=\""..url.."&page=packetdump\"><i class=\"fa fa-hdd-o fa-lg\"></i></a></li>")
   end
end

if(isAdministrator()) then
   if(page == "alerts") then
      print("\n<li class=\"active\"><a href=\"#\"><i class=\"fa fa-warning fa-lg\"></i></a></li>\n")
   elseif interface.isPcapDumpInterface() == false then
      print("\n<li><a href=\""..url.."&page=alerts\"><i class=\"fa fa-warning fa-lg\"></i></a></li>")
   end
end

if(ntop.isEnterprise()) then
      if(page == "traffic_report") then
         print("\n<li class=\"active\"><a href=\"#\"><i class='fa fa-file-text fa-lg'></i></a></li>\n")
      else
         print("\n<li><a href=\""..url.."&page=traffic_report\"><i class='fa fa-file-text fa-lg'></i></a></li>")
      end
else
      print("\n<li><a href=\"#\" title=\""..i18n('enterpriseOnly').."\"><i class='fa fa-file-text fa-lg'></i></A></li>\n")
end

if(isAdministrator()) then
   if(page == "config") then
      print("\n<li class=\"active\"><a href=\"#\"><i class=\"fa fa-cog fa-lg\"></i></a></li>\n")
   elseif interface.isPcapDumpInterface() == false then
      print("\n<li><a href=\""..url.."&page=config\"><i class=\"fa fa-cog fa-lg\"></i></a></li>")
   end
end

if(ifstats.inline and isAdministrator()) then
   if(page == "filtering") then
      print("<li class=\"active\"><a href=\""..url.."&page=filtering\">Traffic Policing</a></li>")
   else
      print("<li><a href=\""..url.."&page=filtering\">Traffic Policing</a></li>")
   end
end

print [[
<li><a href="javascript:history.go(-1)"><i class='fa fa-reply'></i></a></li>
</ul>
</div>
</nav>
   ]]

if((page == "overview") or (page == nil)) then
   print("<table class=\"table table-striped table-bordered\">\n")
   print("<tr><th width=15%>Id</th><td colspan=6>" .. ifstats.id .. " ")
   print("</td></tr>\n")

   if interface.isPcapDumpInterface() == false then
      print("<tr><th width=250>State</th><td colspan=6>")
      state = toggleTableButton("", "", "Active", "1","primary", "Paused", "0","primary", "toggle_local", "ntopng.prefs."..if_name.."_not_idle")

      if(state == "0") then
	 on_state = true
      else
	 on_state = false
      end

      interface.setInterfaceIdleState(on_state)
      print("</td></tr>\n")
   end

   if(ifstats["remote.name"] ~= nil) then
      print("<tr><th>Remote Probe</th><td nowrap><b>Interface Name</b>: "..ifstats["remote.name"].." [ ".. maxRateToString(ifstats.speed*1000) .." ]</td>")
      if(ifstats["remote.if_addr"] ~= "") then print("<td nowrap><b>Interface IP</b>: "..ifstats["remote.if_addr"].."</td>") end
      if(ifstats["probe.ip"] ~= "") then print("<td nowrap><b>Probe IP</b>: "..ifstats["probe.ip"].."</td><td></td>") end
      if(ifstats["probe.public_ip"] ~= "") then
	 print("<td nowrap><b>Public Probe IP</b>: <A HREF=http://"..ifstats["probe.public_ip"]..">"..ifstats["probe.public_ip"].."</A> <i class='fa fa-external-link'></i></td>\n")
      else
	 print("<td>&nbsp;</td>\n")
      end
      print("</tr>\n")
   end

   local is_physical_iface = (interface.isPacketInterface()) and (interface.isPcapDumpInterface() == false)

   if((ifstats["bridge.device_a"] == nil) or (ifstats["bridge.device_b"] == nil)) then
      print('<tr><th width="250">Name</th><td colspan="2">' .. ifstats.name..'</td>\n')

      if is_physical_iface then
	 if(ifstats.name ~= nil) then
	    print('<th>Custom Name</th><td colspan="3">')
	    label = getInterfaceNameAlias(ifstats.name)
	    inline_input_form("custom_name", "Custom Name",
		"Specify an alias for the interface",
		label, isAdministrator(), 'autocorrect="off" spellcheck="false" pattern="^[_\\-a-zA-Z0-9]*$"')
	    print("</td></tr>\n")
	 end
      
	 local speed_key = 'ntopng.prefs.'..ifname..'.speed'
	 local speed = ntop.getCache(speed_key)
	 if speed == nil or speed == "" or tonumber(speed) == nil then
	    speed = ifstats.speed
	 end
	 print("<tr><th width=250>Speed</th><td colspan=2>" .. maxRateToString(speed*1000) .. "</td>")

	 if interface.isPacketInterface() then
	    print("</td><th>Scaling Factor</th><td colspan=3>")
	    local label = ntop.getCache(getRedisIfacePrefix(ifid)..".scaling_factor")
	    if((label == nil) or (label == "")) then label = "1" end
	    inline_input_form("scaling_factor", "Scaling Factor",
	       "This should match your capture interface sampling rate",
	       label, isAdministrator(), 'type="number" min="1" step="1"', 'no-spinner')
	 end

	 print("</td></tr>\n")
      else
	 print("<td colspan=4></td>")
      end
   else
      print("<tr><th>Bridge</th><td colspan=7>"..ifstats["bridge.device_a"].." <i class=\"fa fa-arrows-h\"> "..ifstats["bridge.device_b"].."</td></tr>")
   end

   if(ifstats.ip_addresses ~= "") then
      tokens = split(ifstats.ip_addresses, ",")

      if(tokens ~= nil) then
	 print("<tr><th width=250>IP Address</th><td colspan=5>")

	 for _,s in pairs(tokens) do
	    t = string.split(s, "/")
	    host = interface.getHostInfo(t[1])

	    if(host ~= nil) then
	       print("<li><A HREF="..ntop.getHttpPrefix().."/lua/host_details.lua?host="..t[1]..">".. t[1].."</A>\n")
	    else
	       print("<li>".. t[1].."\n")
	    end
	 end

	 print("</td></tr>")
      end
   end

   print("<tr><th>Family </th><td colspan=2>")

   print(ifstats.type)
   if(ifstats.inline) then
      print(" In-Path Interface (Bump in the Wire)")
   end

   if is_physical_iface then
      print("<th>MTU</th><td colspan=3  nowrap>"..ifstats.mtu.." bytes</td></tr>\n")
   else
      print("<td colspan=4></td>")
   end

   if(ifstats["pkt_dumper"] ~= nil) then
      print("<tr><th rowspan=2>Packet Dumper</th><th colspan=2>Dumped Packets</th><th colspan=2>Dumped Files</th></tr>\n")
      print("<tr><td colspan=2><div id=dumped_pkts>".. formatValue(ifstats["pkt_dumper"]["num_dumped_pkts"]) .."</div></td>")
      print("<td colspan=2><div id=dumped_files>".. formatValue(ifstats["pkt_dumper"]["num_dumped_files"]) .."</div></td></tr>\n")
   end

   label = "Pkts"

   print[[ <tr><th colspan=1 nowrap>Traffic Breakdown</th> ]]

   if(ifstats.type ~= "zmq") then
      print [[ <td colspan=2><div class="pie-chart" id="ifaceTrafficBreakdown"></div></td><td colspan=3> <div class="pie-chart" id="ifaceTrafficDistribution"></div></td></tr> ]]
   else
      print [[ <td colspan=4><div class="pie-chart" id="ifaceTrafficBreakdown"></div></td></tr> ]]
   end

print [[
	<script type='text/javascript'>
	       window.onload=function() {
				   do_pie("#ifaceTrafficBreakdown", ']]
print (ntop.getHttpPrefix())
print [[/lua/iface_local_stats.lua', { id: ]] print(ifstats.id .. " }, \"\", refresh); \n")

if(ifstats.type ~= "zmq") then
print [[				   do_pie("#ifaceTrafficDistribution", ']]
print (ntop.getHttpPrefix())
print [[/lua/iface_local_stats.lua', { id: ]] print(ifstats.id .. ", mode: \"distribution\" }, \"\", refresh); \n")
end
print [[ }

]]
print("</script>\n")

   if(ifstats.zmqRecvStats ~= nil) then
   print("<tr><th colspan=7 nowrap>ZMQ RX Statistics</th></tr>\n")
   print("<tr><th nowrap>Collected Flows</th><td width=20%><span id=if_zmq_flows>"..formatValue(ifstats.zmqRecvStats.flows).."</span>")
   print("<th nowrap>Interface RX Updates</th><td width=20%><span id=if_zmq_events>"..formatValue(ifstats.zmqRecvStats.events).."</span>")
   print("<th nowrap>sFlow Counter Updates</th><td width=20%><span id=if_zmq_counters>"..formatValue(ifstats.zmqRecvStats.counters).."</span></tr>")
   end

   print("<tr><th colspan=7 nowrap>Ingress Traffic</th></tr>\n")
   print("<tr><th nowrap>Received Traffic</th><td width=20%><span id=if_bytes>"..bytesToSize(ifstats.stats.bytes).."</span> [<span id=if_pkts>".. formatValue(ifstats.stats.packets) .. " ".. label .."</span>] ")
   print("<span id=pkts_trend></span></td><th width=20%>Dropped Packets</th><td width=20%><span id=if_drops>")

   if(ifstats.stats.drops > 0) then print('<span class="label label-danger">') end
   print(formatValue(ifstats.stats.drops).. " " .. label)

   if((ifstats.stats.packets+ifstats.stats.drops) > 0) then
      local pctg = round((ifstats.stats.drops*100)/(ifstats.stats.packets+ifstats.stats.drops), 2)
      if(pctg > 0) then print(" [ " .. pctg .. " % ] ") end
   end

   if(ifstats.stats.drops > 0) then print('</span>') end
   print("</span>&nbsp;")
   if (isAdministrator()) then
      print("<span id=drops_trend></span></td><td colspan=3><span id=button_reset_drops></span>\n")
   end
   print("</td></tr>\n")
   
   if(prefs.is_dump_flows_enabled) then
      local dump_to = "MySQL"
      if prefs.is_dump_flows_to_es_enabled == true then
	 dump_to = "ElasticSearch"
      end

      local export_count     = ifstats.stats.flow_export_count
      local export_rate      = ifstats.stats.flow_export_rate
      local export_drops     = ifstats.stats.flow_export_drops
      local export_drops_pct = 0
      if export_drops > 0 and export_count > 0 then
	 export_drops_pct = export_drops / export_count * 100
      end

      print("<tr><th colspan=7 nowrap>"..dump_to.." Flows Export Statistics</th></tr>\n")

      print("<tr>")
      print("<th nowrap>Exported Flows</th>")
      print("<td><span id=exported_flows>"..formatValue(export_count).."</span>")
      print("&nbsp;[<span id=exported_flows_rate>"..formatValue(round(export_rate, 2)).."</span> Flows/s]</td>")
      print("<th>Dropped Flows</th>")
      local span_danger = ""
      if(export_drops > 0) then
	 span_danger = ' class="label label-danger"'
      end
      print("<td><span id=exported_flows_drops "..span_danger..">"..formatValue(export_drops).."</span>&nbsp;")
      print("<span id=exported_flows_drops_pct "..span_danger..">["
	       ..formatValue(round(export_drops_pct, 2)).."%]</span></td>")
      print("<td colspan=3>&nbsp;</td>")
      print("</tr>")

   end

   if((ifstats["bridge.device_a"] ~= nil) and (ifstats["bridge.device_b"] ~= nil)) then
      print("<tr><th colspan=7>Bridged Traffic</th></tr>\n")
      print("<tr><th nowrap>Interface Direction</th><th nowrap>Ingress Packets</th><th nowrap>Egress Packets</th><th nowrap>Shaped Packets</th><th nowrap>Filtered Packets</th><th nowrap>Send Error</th><th nowrap>Buffer Full</th></tr>\n")
      print("<tr><th>".. ifstats["bridge.device_a"] .. " <i class=\"fa fa-arrow-right\"></i> ".. ifstats["bridge.device_b"] .."</th><td><span id=a_to_b_in_pkts>".. formatPackets(ifstats["bridge.a_to_b.in_pkts"]) .."</span> <span id=a_to_b_in_pps></span></td>")
      print("<td><span id=a_to_b_out_pkts>".. formatPackets(ifstats["bridge.a_to_b.out_pkts"]) .."</span> <span id=a_to_b_out_pps></span></td>")
      print("<td><span id=a_to_b_shaped_pkts>".. formatPackets(ifstats["bridge.a_to_b.shaped_pkts"]) .."</span></td>")
      print("<td><span id=a_to_b_filtered_pkts>".. formatPackets(ifstats["bridge.a_to_b.filtered_pkts"]) .."</span></td>")

      print("<td><span id=a_to_b_num_pkts_send_error>".. formatPackets(ifstats["bridge.a_to_b.num_pkts_send_error"]) .."</span></td>")
      print("<td><span id=a_to_b_num_pkts_send_buffer_full>".. formatPackets(ifstats["bridge.a_to_b.num_pkts_send_buffer_full"]) .."</span></td>")

      print("</tr>\n")

      print("<tr><th>".. ifstats["bridge.device_b"] .. " <i class=\"fa fa-arrow-right\"></i> ".. ifstats["bridge.device_a"] .."</th><td><span id=b_to_a_in_pkts>".. formatPackets(ifstats["bridge.b_to_a.in_pkts"]) .."</span> <span id=b_to_a_in_pps></span></td>")
      print("<td><span id=b_to_a_out_pkts>"..formatPackets( ifstats["bridge.b_to_a.out_pkts"]) .."</span> <span id=b_to_a_out_pps></span></td>")
      print("<td><span id=b_to_a_shaped_pkts>".. formatPackets(ifstats["bridge.b_to_a.shaped_pkts"]) .."</span></td>")
      print("<td><span id=b_to_a_filtered_pkts>".. formatPackets(ifstats["bridge.b_to_a.filtered_pkts"]) .."</span></td>")

      print("<td><span id=b_to_a_num_pkts_send_error>".. formatPackets(ifstats["bridge.b_to_a.num_pkts_send_error"]) .."</span></td>")
      print("<td><span id=b_to_a_num_pkts_send_buffer_full>".. formatPackets(ifstats["bridge.b_to_a.num_pkts_send_buffer_full"]) .."</span></td>")

      print("</tr>\n")
   end

   print [[
   <tr><td colspan=7> <small> <b>NOTE</b>:<p>In ethernet networks, each packet has an <A HREF=https://en.wikipedia.org/wiki/Ethernet_frame>overhead of 24 bytes</A> [preamble (7 bytes), start of frame (1 byte), CRC (4 bytes), and <A HREF=http://en.wikipedia.org/wiki/Interframe_gap>IFG</A> (12 bytes)]. Such overhead needs to be accounted to the interface traffic, but it is not added to the traffic being exchanged between IP addresses. This is because such data contributes to interface load, but it cannot be accounted in the traffic being exchanged by hosts, and thus expect little discrepancies between host and interface traffic values. </small> </td></tr>
   ]]

   print("</table>\n")
elseif((page == "packets")) then
   print [[ <table class="table table-bordered table-striped"> ]]
      print("<tr><th width=30% rowspan=3>TCP Packets Analysis</th><th>Retransmissions</th><td align=right><span id=pkt_retransmissions>".. formatPackets(ifstats.tcpPacketStats.retransmissions) .."</span> <span id=pkt_retransmissions_trend></span></td></tr>\n")
      print("<tr></th><th>Out of Order</th><td align=right><span id=pkt_ooo>".. formatPackets(ifstats.tcpPacketStats.out_of_order) .."</span> <span id=pkt_ooo_trend></span></td></tr>\n")
      print("<tr></th><th>Lost</th><td align=right><span id=pkt_lost>".. formatPackets(ifstats.tcpPacketStats.lost) .."</span> <span id=pkt_lost_trend></span></td></tr>\n")

    print [[
	<tr><th class="text-left">Size Distribution</th><td colspan=5><div class="pie-chart" id="sizeDistro"></div></td></tr>
      </table>

	<script type='text/javascript'>
	 window.onload=function() {

       do_pie("#sizeDistro", ']]
   print (ntop.getHttpPrefix())
   print [[/lua/if_pkt_distro.lua', { distr: "size", ifname: "]] print(if_name.."\"")
   print [[
	   }, "", refresh);
    }

      </script><p>
  ]]
elseif(page == "ndpi") then

--fc = interface.getnDPIFlowsCount()
--for k,v in pairs(fc) do
--   io.write(k.."="..v.."\n")
--end

   print [[
	    <script type="text/javascript" src="]] print(ntop.getHttpPrefix()) print [[/js/jquery.tablesorter.js"></script>
      <table class="table table-bordered table-striped">
      <tr><th class="text-left">Cumulative Protocol Stats</th>
	       <td colspan=3><div class="pie-chart" id="topApplicationProtocols"></div></td>
	       <td colspan=2><div class="pie-chart" id="topApplicationBreeds"></div></td>
	       </tr>
      <tr><th class="text-left">Live Flows Count</th>
	       <td colspan=3><div class="pie-chart" id="topFlowsCount"></div></td>
	       <td colspan=2><div class="pie-chart" id="topTCPFlowsStats"></div>
               <br><small><b>NOTE:</b> This chart depicts only TCP connections.
               </td>
	       </tr>
  </div>

	<script type='text/javascript'>
	 window.onload=function() {

       do_pie("#topApplicationProtocols", ']]
   print (ntop.getHttpPrefix())
   print [[/lua/iface_ndpi_stats.lua', { mode: "sinceStartup", id: "]] print(ifid) print [[" }, "", refresh);

       do_pie("#topApplicationBreeds", ']]
   print (ntop.getHttpPrefix())
   print [[/lua/iface_ndpi_stats.lua', { breed: "true", mode: "sinceStartup", id: "]] print(ifid) print [[" }, "", refresh);

       do_pie("#topFlowsCount", ']]
   print (ntop.getHttpPrefix())
   print [[/lua/iface_ndpi_stats.lua', { breed: "true", mode: "count", id: "]] print(ifid) print [[" }, "", refresh);

       do_pie("#topTCPFlowsStats", ']]
   print (ntop.getHttpPrefix())
   print [[/lua/iface_tcp_stats.lua', { id: "]] print(ifid) print [[" }, "", refresh);
    }

      </script><p>
  </table>
  ]]

   print [[
     <table id="myTable" class="table table-bordered table-striped tablesorter">
     ]]

   print("<thead><tr><th>Application Protocol</th><th>Total (Since Startup)</th><th>Percentage</th></tr></thead>\n")

   print ('<tbody id="if_stats_ndpi_tbody">\n')
   print ("</tbody>")
   print("</table>\n")
   print [[
<script>
function update_ndpi_table() {
  $.ajax({
    type: 'GET',
    url: ']]
   print (ntop.getHttpPrefix())
   print [[/lua/if_stats_ndpi.lua',
    data: { id: "]] print(ifid) print [[" },
    success: function(content) {
      $('#if_stats_ndpi_tbody').html(content);
      // Let the TableSorter plugin know that we updated the table
      $('#if_stats_ndpi_tbody').trigger("update");
    }
  });
}
update_ndpi_table();
]]

--  Update interval ndpi table
print("setInterval(update_ndpi_table, 5000);")

   print [[

</script>

]]

elseif(page == "historical") then
   rrd_file = _GET["rrd_file"]
   selected_epoch = _GET["epoch"]
   if(selected_epoch == nil) then selected_epoch = "" end
   topArray = makeTopStatsScriptsArray()

   if(rrd_file == nil) then rrd_file = "bytes.rrd" end
   drawRRD(ifstats.id, nil, rrd_file, _GET["graph_zoom"], url.."&page=historical", 1, _GET["epoch"], selected_epoch, topArray)
   --drawRRD(ifstats.id, nil, rrd_file, _GET["graph_zoom"], url.."&page=historical", 1, _GET["epoch"], selected_epoch, topArray, _GET["comparison_period"])
elseif(page == "trafficprofiles") then
   print("<table class=\"table table-striped table-bordered\">\n")
   print("<tr><th width=15%><a href=\""..ntop.getHttpPrefix().."/lua/pro/admin/edit_profiles.lua\">Profile Name</A></th><th width=5%>Chart</th><th>Traffic</th></tr>\n")
   for pname,pbytes in pairs(ifstats.profiles) do
     local trimmed = trimSpace(pname)
     local rrdname = fixPath(dirs.workingdir .. "/" .. ifid .. "/profilestats/" .. getPathFromKey(trimmed) .. "/bytes.rrd")
     local statschart_icon = ''
     if ntop.exists(rrdname) then
	 statschart_icon = '<A HREF='..ntop.getHttpPrefix()..'/lua/profile_details.lua?profile='..trimmed..'><i class=\'fa fa-area-chart fa-lg\'></i></A>'
     end

     print("<tr><th>"..pname.."</th><td align=center>"..statschart_icon.."</td><td><span id=profile_"..trimmed..">"..bytesToSize(pbytes).."</span> <span id=profile_"..trimmed.."_trend></span></td></tr>\n")
   end

print [[
   </table>

   <script>
   var last_profile = [];
   var traffic_profiles_interval = window.setInterval(function() {
	  $.ajax({
		    type: 'GET',
		    url: ']]
   print (ntop.getHttpPrefix())
   print [[/lua/network_load.lua',
		    data: { ifname: "]] print(if_name) print [[" },
		    success: function(content) {
			var profiles = content;

			if(profiles["profiles"] != null) {
			   for (key in profiles["profiles"]) {
			     k = '#profile_'+key.replace(" ", "");
			     v = profiles["profiles"][key];
			     $(k).html(bytesToVolume(v));
			     k += "_trend";
			     last = last_profile[key];
			     if(last == null) { last = 0; }
			     $(k).html(get_trend(last, v));
			   }

			   last_profile = profiles["profiles"];
			  }
			}
	  });
}, 3000);

   </script>
]]
elseif(page == "packetdump") then

if is_packetdump_enabled then
  dump_all_traffic = ntop.getCache('ntopng.prefs.'..ifstats.name..'.dump_all_traffic')
  dump_status_tap = ntop.getCache('ntopng.prefs.'..ifstats.name..'.dump_tap')
  dump_status_disk = ntop.getCache('ntopng.prefs.'..ifstats.name..'.dump_disk')
  dump_unknown_disk = ntop.getCache('ntopng.prefs.'..ifstats.name..'.dump_unknown_disk')
  dump_security_disk = ntop.getCache('ntopng.prefs.'..ifstats.name..'.dump_security_disk')

  if(dump_all_traffic == "true") then
    dump_all_traffic_checked = 'checked="checked"'
    dump_all_traffic_value = "false" -- Opposite
  else
    dump_all_traffic_checked = ""
    dump_all_traffic_value = "true" -- Opposite
  end
  if(dump_status_disk == "true") then
    dump_traffic_checked = 'checked="checked"'
    dump_traffic_value = "false" -- Opposite
  else
    dump_traffic_checked = ""
    dump_traffic_value = "true" -- Opposite
  end
  if(dump_unknown_disk == "true") then
    dump_unknown_checked = 'checked="checked"'
    dump_unknown_value = "false" -- Opposite
  else
    dump_unknown_checked = ""
    dump_unknown_value = "true" -- Opposite
  end
  if(dump_security_disk == "true") then
    dump_security_checked = 'checked="checked"'
    dump_security_value = "false" -- Opposite
  else
    dump_security_checked = ""
    dump_security_value = "true" -- Opposite
  end
  if(dump_status_tap == "true") then
    dump_traffic_tap_checked = 'checked="checked"'
    dump_traffic_tap_value = "false" -- Opposite
  else
    dump_traffic_tap_checked = ""
    dump_traffic_tap_value = "true" -- Opposite
  end

   print("<table class=\"table table-striped table-bordered\">\n")

   print("<tr><th width=30%>Packet Dump</th><td>")
   print [[
<form id="alert_prefs" class="form-inline" style="margin-bottom: 0px;">
	 <input type="hidden" name="ifId" value="]]
	       print(ifid)
	       print('"><input type="hidden" name="dump_all_traffic" value="'..dump_all_traffic_value..'"><input type="checkbox" value="1" '..dump_all_traffic_checked..' onclick="this.form.submit();">  Dump All Traffic')
	       print('</input>')
	       print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
	       print('</form>')
   print("</td></tr>\n")

   print("<tr><th width=30%>Packet Dump To Disk</th><td>")
   print [[
<form id="alert_prefs" class="form-inline" style="margin-bottom: 0px;">
	 <input type="hidden" name="ifId" value="]]
	       print(ifid)
	       print('"><input type="hidden" name="dump_traffic_to_disk" value="'..dump_traffic_value..'"><input type="checkbox" value="1" '..dump_traffic_checked..' onclick="this.form.submit();"> <i class="fa fa-hdd-o fa-lg"></i> Dump Traffic To Disk')
	       if(dump_traffic_checked ~= "") then
		 dumped = interface.getInterfacePacketsDumpedFile()
		 print(" - "..ternary(dumped, dumped, 0).." packets dumped")
	       end
	       print('</input>')
	       print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
	       print('</form>')
   print("</td></tr>\n")

   print("<tr><th width=30%></th><td>")
   print [[
<form id="alert_prefs" class="form-inline" style="margin-bottom: 0px;">
	 <input type="hidden" name="ifId" value="]]
	       print(ifid)
	       print('"><input type="hidden" name="dump_unknown_to_disk" value="'..dump_unknown_value..'"><input type="checkbox" value="1" '..dump_unknown_checked..' onclick="this.form.submit();"> <i class="fa fa-hdd-o fa-lg"></i> Dump Unknown Traffic To Disk </input>')
	       print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
	       print('</form>')
   print("</td></tr>\n")

   print("<tr><th width=30%></th><td>")
   print [[
<form id="alert_prefs" class="form-inline" style="margin-bottom: 0px;">
	 <input type="hidden" name="ifId" value="]]
	       print(ifid)
	       print('"><input type="hidden" name="dump_security_to_disk" value="'..dump_security_value..'"><input type="checkbox" value="1" '..dump_security_checked..' onclick="this.form.submit();"> <i class="fa fa-hdd-o fa-lg"></i> Dump Traffic To Disk On Security Alert </input>')
	       print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
	       print('</form>')
   print("</td></tr>\n")

   print("<tr><th>Packet Dump To Tap</th><td>")
   if(interface.getInterfaceDumpTapName() ~= "") then
   print [[
<form id="alert_prefs" class="form-inline" style="margin-bottom: 0px;">
	 <input type="hidden" name="ifId" value="]]
	       print(ifId)
	       print('"><input type="hidden" name="dump_traffic_to_tap" value="'..dump_traffic_tap_value..'"><input type="checkbox" value="1" '..dump_traffic_tap_checked..' onclick="this.form.submit();"> <i class="fa fa-filter fa-lg"></i> Dump Traffic To Tap ')
	       print('('..interface.getInterfaceDumpTapName()..')')
	       if(dump_traffic_tap_checked ~= "") then
		 dumped = interface.getInterfacePacketsDumpedTap()
		 print(" - "..ternary(dumped, dumped, 0).." packets dumped")
	       end
	       print(' </input>')
	       print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
	       print('</form>')
   else
      print("Disabled. Please restart ntopng with --enable-taps")
end

   print("</td></tr>\n")
   print("<tr><th width=250>Sampling Rate</th>\n")
   print [[<td>]]
   if(dump_security_checked ~= "") then
   print[[<form class="form-inline" style="margin-bottom: 0px;">
       <input type="hidden" name="ifId" value="]]
      print(ifId)
      print [[">]]
      print('1 : <input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
      print [[<input type="number" name="sampling_rate" placeholder="" min="0" step="100" max="100000" value="]]
	 srate = ntop.getCache('ntopng.prefs.'..ifstats.name..'.dump_sampling_rate')
	 if(srate ~= nil and srate ~= "" and srate ~= "0") then print(srate) else print("1000") end
	 print [["></input>
      &nbsp;<button type="submit" style="position: absolute; margin-top: 0; height: 26px" class="btn btn-default btn-xs">Save</button>
    </form>
<small>
    NOTE: Sampling rate is applied only when dumping packets caused by a security alert<br>
(e.g. a volumetric DDoS attack) and not to those hosts/flows that have been marked explicitly for dump.
</small>]]
  else
    print('Disabled. Enable packet dump on security alert.')
  end
  print[[
    </td></tr>
       ]]

   print("<tr><th colspan=2>Dump To Disk Parameters</th></tr>")
   print("<tr><th width=250>Pcap Dump Directory</th><td>")
   pcapdir = dirs.workingdir .."/"..ifstats.id.."/pcap/"
   print(pcapdir.."</td></tr>\n")
   print("<tr><th width=250>Max Packets per File</th>\n")
   print [[<td>
    <form class="form-inline" style="margin-bottom: 0px;">
       <input type="hidden" name="ifid" value="]]
      print(ifid)
      print [[">]]
      print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
      print [[<input type="number" name="max_pkts_file" placeholder="" min="0" step="1000" max="100000" value="]]
	 max_pkts_file = ntop.getCache('ntopng.prefs.'..ifstats.name..'.dump_max_pkts_file')
	 if(max_pkts_file ~= nil and max_pkts_file ~= "") then
	   print(max_pkts_file.."")
	 else
	   print(interface.getInterfaceDumpMaxPkts().."")
	 end
	 print [["></input> pkts &nbsp;<button type="submit" style="position: absolute; margin-top: 0; height: 26px" class="btn btn-default btn-xs">Save</button>
    </form>
    <small>Maximum number of packets to store on a pcap file before creating a new file.</small>
    </td></tr>
       ]]
   print("<tr><th width=250>Max Duration of File</th>\n")
   print [[<td>
    <form class="form-inline" style="margin-bottom: 0px;">
       <input type="hidden" name="ifId" value="]]
      print(ifid)
      print [[">]]
      print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
      print [[<input type="number" name="max_sec_file" placeholder="" min="0" step="60" max="100000" value="]]
	 max_sec_file = ntop.getCache('ntopng.prefs.'..ifstats.name..'.dump_max_sec_file')
	 if(max_sec_file ~= nil and max_sec_file ~= "") then
	   print(max_sec_file.."")
	 else
	   print(interface.getInterfaceDumpMaxSec().."")
	 end
	 print [["></input>
		  &nbsp;sec &nbsp;<button type="submit" style="position: absolute; margin-top: 0; height: 26px" class="btn btn-default btn-xs">Save</button>
    </form>
    <small>Maximum pcap file duration before creating a new file.<br>NOTE: a dump file is closed when it reaches first the maximum size or duration specified.</small>
    </td></tr>
       ]]
   print("<tr><th width=250>Max Size of Dump Files</th>\n")
   print [[<td>
    <form class="form-inline" style="margin-bottom: 0px;">
       <input type="hidden" name="ifid" value="]]
      print(ifid)
      print [[">]]
      print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
      print [[<input type="number" name="max_files" placeholder="" min="0" step="1" max="100000000" value="]]
	 max_files = ntop.getCache('ntopng.prefs.'..ifstats.name..'.dump_max_files')
	 if(max_files ~= nil and max_files ~= "") then
	   print(tostring(tonumber(max_files)/1000000).."")
	 else
	   print(tostring(tonumber(interface.getInterfaceDumpMaxFiles())/1000000).."")
	 end
	 print [["></input>
		  &nbsp; MB &nbsp;&nbsp;&nbsp;<button type="submit" style="position: absolute; margin-top: 0; height: 26px" class="btn btn-default btn-xs">Save</button>
    </form>
    <small>Maximum size of created pcap files.<br>NOTE: total file size is checked daily and old dump files are automatically overwritten after reaching the threshold.</small>
    </td></tr>
      ]]
   print("</table>")
end
elseif(page == "alerts") then
local ifname_clean = "iface_"..tostring(ifid)
local tab = _GET["tab"]
local re_arm_minutes = nil

if(tab == nil) then tab = alerts_granularity[1][1] end

print [[ <ul class="nav nav-tabs">
]]

for _,e in pairs(alerts_granularity) do
   local k = e[1]
   local l = e[2]
   l = '<i class="fa fa-wrench" aria-hidden="true"></i>&nbsp;'..l

   if(k == tab) then print("\t<li class=active>") else print("\t<li>") end
   print("<a href=\""..ntop.getHttpPrefix().."/lua/if_stats.lua?id="..ifid.."&page=alerts&tab="..k.."\">"..l.."</a></li>\n")
end

-- Before doing anything we need to check if we need to save values

vals = { }
alerts = ""
to_save = false

if((_GET["to_delete"] ~= nil) and (_GET["SaveAlerts"] == nil)) then
   delete_alert_configuration(ifname_clean, ifname)
   alerts = nil
else
   for k,_ in pairs(alert_functions_description) do
      value    = _GET["value_"..k]
      operator = _GET["operator_"..k]

      if((value ~= nil) and (operator ~= nil)) then
	 --io.write("\t"..k.."\n")
	 to_save = true
	 value = tonumber(value)
	 if(value ~= nil) then
	   if(alerts ~= "") then alerts = alerts .. "," end
	   alerts = alerts .. k .. ";" .. operator .. ";" .. value
	 else
	   if ntop.isPro() then ntop.withdrawNagiosAlert(ifname_clean, tab, k, "alarm not installed") end
	 end
      end
   end

   --print(alerts)

   if(to_save) then
      refresh_alert_configuration(ifname_clean, ifname, tab, alerts)
      if(alerts == "") then
	 ntop.delHashCache(get_alerts_hash_name(tab, ifname), ifname_clean)
      else
	 ntop.setHashCache(get_alerts_hash_name(tab, ifname), ifname_clean, alerts)
      end
   else
      alerts = ntop.getHashCache(get_alerts_hash_name(tab, ifname), ifname_clean)
   end
   if _GET["re_arm_minutes"] then
      ntop.setHashCache(get_re_arm_alerts_hash_name(tab),
			"ifid_"..tostring(ifId).."_"..ifname_clean,
			_GET["re_arm_minutes"])
   end
   re_arm_minutes = ntop.getHashCache(get_re_arm_alerts_hash_name(tab),
				      "ifid_"..tostring(ifId).."_"..ifname_clean)
   if not re_arm_minutes then re_arm_minutes="" end
end

if(alerts ~= nil) then
   --print(alerts)
   --tokens = string.split(alerts, ",")
   tokens = split(alerts, ",")

   --print(tokens)
   if(tokens ~= nil) then
      for _,s in pairs(tokens) do
	 t = string.split(s, ";")
	 --print("-"..t[1].."-")
	 if(t ~= nil) then vals[t[1]] = { t[2], t[3] } end
      end
   end
end

if(tab == "alerts_preferences") then
   suppressAlerts = ntop.getHashCache(get_alerts_suppressed_hash_name(ifname), "iface_"..tostring(ifid))
   if((suppressAlerts == "") or (suppressAlerts == nil) or (suppressAlerts == "true")) then
      alerts_checked = 'checked="checked"'
      alerts_value = "false" -- Opposite
   else
      alerts_checked = ""
      alerts_value = "true" -- Opposite
   end

else
   print [[
    </ul>
    <table id="user" class="table table-bordered table-striped" style="clear: both"> <tbody>
    <tr><th width=20%>Alert Function</th><th>Threshold</th></tr>


   <form>
    <input type=hidden name=page value=alerts>
   ]]

   print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
   print("<input type=hidden name=ifId value=\""..ifid.."\">\n")
   print("<input type=hidden name=tab value="..tab..">\n")

   for k,v in pairsByKeys(alert_functions_description, asc) do
      print("<tr><th>"..k.."</th><td>\n")
      print("<select name=operator_".. k ..">\n")
      if((vals[k] ~= nil) and (vals[k][1] == "gt")) then print("<option selected=\"selected\"") else print("<option ") end
      print("value=\"gt\">&gt;</option>\n")

      if((vals[k] ~= nil) and (vals[k][1] == "eq")) then print("<option selected=\"selected\"") else print("<option ") end
      print("value=\"eq\">=</option>\n")

      if((vals[k] ~= nil) and (vals[k][1] == "lt")) then print("<option selected=\"selected\"") else print("<option ") end
      print("value=\"lt\">&lt;</option>\n")
      print("</select>\n")
      print("<input type=text name=\"value_"..k.."\" value=\"")
      if(vals[k] ~= nil) then print(vals[k][2]) end
      print("\">\n\n")
      print("<br><small>"..v.."</small>\n")
      print("</td></tr>\n")
   end

   print [[
   <tr><td colspan=2  style="text-align: left; white-space: nowrap;" ></td></tr>
   <tr>
     <td style="text-align: left; white-space: nowrap;" ><b>Re-arm minutes</b></td>
     <td>
     <input type="number" name="re_arm_minutes" style="width: 50px;" value=]] print(tostring(re_arm_minutes)) print[[><br>
     <small>The re-arm is the dead time between one alert generation and the potential generation of the next alert of the same kind. </small>
     </td>
   </tr>

   <tr><th colspan=2  style="text-align: center; white-space: nowrap;" >

   <input type="submit" class="btn btn-primary" name="SaveAlerts" value="Save Configuration">

   <a href="#myModal" role="button" class="btn" data-toggle="modal">[ <i type="submit" class="fa fa-trash-o"></i> Delete All Interface Configured Alerts ]</button></a>
   <!-- Modal -->
   <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
     <div class="modal-dialog">
       <div class="modal-content">
	 <div class="modal-header">
       <button type="button" class="close" data-dismiss="modal" aria-hidden="true">X</button>
       <h3 id="myModalLabel">Confirm Action</h3>
     </div>
     <div class="modal-body">
	 <p>Do you really want to delete all configured alerts for interface ]] print(if_name) print [[?</p>
     </div>
     <div class="modal-footer">
       <form class=form-inline style="margin-bottom: 0px;" method=get action="#"><input type=hidden name=to_delete value="__all__">
   ]]
   print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
   print [[    <button class="btn btn-default" data-dismiss="modal" aria-hidden="true">Close</button>
       <button class="btn btn-primary" type="submit">Delete All</button>

     </div>
   </form>
   </div>
   </div>

   </th> </tr>



   </tbody> </table>
   ]]
end
elseif(page == "config") then
local if_name = ifstats.name
local ifname_clean = "iface_"..tostring(ifid)

   if(isAdministrator()) then
      trigger_alerts = _GET["trigger_alerts"]
      if(trigger_alerts ~= nil) then
	 if(trigger_alerts == "true") then
	    ntop.delHashCache(get_alerts_suppressed_hash_name(ifname), ifname_clean)
	 else
	    ntop.setHashCache(get_alerts_suppressed_hash_name(ifname), ifname_clean, trigger_alerts)
	 end
      end
   end

   print("<table class=\"table table-striped table-bordered\">\n")
       suppressAlerts = ntop.getHashCache(get_alerts_suppressed_hash_name(ifname), ifname_clean)
       if((suppressAlerts == "") or (suppressAlerts == nil) or (suppressAlerts == "true")) then
	  alerts_checked = 'checked="checked"'
	  alerts_value = "false" -- Opposite
       else
	  alerts_checked = ""
	  alerts_value = "true" -- Opposite
       end

       print [[
	    <tr><th>Interface Alerts</th><td nowrap>
	    <form id="alert_prefs" class="form-inline" style="margin-bottom: 0px;">
	    <input type="hidden" name="tab" value="alerts_preferences">
	    <input type="hidden" name="ifId" value="]]

	 print(ifid)
	 print('"><input type="hidden" name="trigger_alerts" value="'..alerts_value..'"><input type="checkbox" value="1" '..alerts_checked..' onclick="this.form.submit();"> <i class="fa fa-exclamation-triangle fa-lg"></i> Trigger alerts for interface '..if_name..'</input>')
	 print('<input id="csrf" name="csrf" type="hidden" value="'..ntop.getRandomCSRFValue()..'" />\n')
	 print('<input type="hidden" name="page" value="config">')
	 print('</form>')
	 print('</td>')
	 print [[</tr>]]

    print("</table>")
elseif(page == "filtering") then
   if not isAdministrator() then
      error()
   end

   local shaper_utils = require("shaper_utils")
   policy_key = "ntopng.prefs.".. ifid ..".l7_policy"
   any_net = "0.0.0.0/0@0"

   -- ====================================

   if((_GET["csrf"] ~= nil) and (_GET["new_vlan"] ~= nil) and (_GET["new_network"] ~= nil)) then
      network_key = _GET["new_network"].."@".._GET["new_vlan"]

      -- check if network already exists, needed by host_details page
      if(ntop.getHashCache(policy_key, network_key) == "") then
         initial_policy = ""
         
         if(_GET["clone_policy"] ~= nil) then
            -- try to clone existing policy
            value = ntop.getHashCache(policy_key, _GET["clone_policy"])
            if value ~= nil then
               initial_policy = value

               -- also clone existing shapers
               key = "ntopng.prefs.".. ifid ..".l7_policy_ingress_shaper_id"
               ntop.setHashCache(key, network_key, ntop.getHashCache(key, _GET["clone_policy"]))
               key = "ntopng.prefs.".. ifid ..".l7_policy_egress_shaper_id"
               ntop.setHashCache(key, network_key, ntop.getHashCache(key, _GET["clone_policy"]))
            end
         end
         ntop.setHashCache(policy_key, network_key, initial_policy)
         interface.reloadL7Rules()
      end
      jsRedirect("if_stats.lua?id="..ifid.."&page=filtering&network="..network_key)
   end

   if((_GET["csrf"] ~= nil) and (_GET["delete_network"] ~= nil) and (_GET["delete_network"] ~= any_net)) then
      -- delete network policy
      ntop.delHashCache(policy_key, _GET["delete_network"])

      -- delete network shaping settings
      key = "ntopng.prefs.".. ifid ..".l7_policy_ingress_shaper_id"
      ntop.delHashCache(key, _GET["delete_network"])
      key = "ntopng.prefs.".. ifid ..".l7_policy_egress_shaper_id"
      ntop.delHashCache(key, _GET["delete_network"])

      -- reload all the rules, and update hosts affected by removal
      interface.reloadL7Rules(_GET["delete_network"])
      jsRedirect("if_stats.lua?id="..ifid.."&page=filtering")
   end

   net = _GET["network"] or _GET["new_network"]

   if(net ~= nil) then
      if(findString(net, "@") == nil) then
         net = net.."@0"
      end
   end

   -- NB: this cannot be null, since it contains at least the 'any' network
   nets = ntop.getHashKeysCache(policy_key) or {}

   -- tprint(nets)
   if(net == nil) then
      -- If there is not &network= parameter then use the first network available
      for k,v in pairsByKeys(nets, asc) do
         net = k
         break
      end
   end

   -- io.write(net.."\n")
   if((_GET["csrf"] ~= nil) and (net ~= nil) and (_GET["blacklist"] ~= nil)) then
      ntop.setHashCache(policy_key, net, _GET["blacklist"])

      -- ******************************
      ingress_shaper_id = _GET["ingress_shaper_id"]
      if(ingress_shaper_id == nil) then ingress_shaper_id = 0 end
      key = "ntopng.prefs.".. ifid ..".l7_policy_ingress_shaper_id"
      ntop.setHashCache(key, net, ingress_shaper_id)
      -- ******************************
      egress_shaper_id = _GET["egress_shaper_id"]
      if(egress_shaper_id == nil) then egress_shaper_id = 0 end
      key = "ntopng.prefs.".. ifid ..".l7_policy_egress_shaper_id"
      ntop.setHashCache(key, net, egress_shaper_id)
      -- ******************************
      
      -- reload all the rules
      interface.reloadL7Rules()
      jsRedirect("if_stats.lua?id="..ifid.."&page=filtering&network="..net)
      -- io.write("reloading shapers rules\n")
   end

   selected_network = net
   if(selected_network == nil) then
      selected_network = any_net
   end

   if((_GET["csrf"] ~= nil) and (_GET["add_shapers"] ~= nil)) then
      for shaper,mrate in pairs(_GET) do
         local sp = split(shaper, "shaper_")
         if #sp == 2 then
            local shaper_id = tonumber(sp[2])
            local max_rate = tonumber(mrate)
            --~ tprint(shaper_id.." "..max_rate)

            if(max_rate > 1048576) then max_rate = -1 end
            if(max_rate < -1) then max_rate = -1 end

            ntop.setHashCache(shaper_key, shaper_id, max_rate)
         end
      end

      interface.reloadShapers()
      jsRedirect("if_stats.lua?id="..ifid.."&page=filtering#shapers")
   end

   if((_GET["csrf"] ~= nil) and (_GET["delete_shaper"] ~= nil)) then
      local shaper_id = _GET["delete_shaper"]
      
      shaper_utils.deleteShaper(ifid, shaper_id)
      jsRedirect("if_stats.lua?id="..ifid.."&page=filtering#shapers")
   end

   print [[
   <ul id="filterPageTabPanel" class="nav nav-tabs">
      <li class="active"><a data-toggle="tab" href="#manage">Manage Policies</a></li>
      <li><a data-toggle="tab" href="#create">Create Policies</a></li>
      <li><a data-toggle="tab" href="#shapers">Manage Shapers</a></li>
   </ul>
   <div class="tab-content">]]

-- ==== Manage policies tab ====

print [[<br><div id="manage" class="tab-pane active">
  <form id="ndpiprotosform" action="]] print(ntop.getHttpPrefix()) print [[/lua/if_stats.lua" method="get">
  <input type=hidden name=page value=filtering>
  
  <table class="table table-striped table-bordered">
  <tr><th width=10%>Network</th><td colspan=3> <select name="network" id="network">
]]
   selected_found = false
   for k,v in pairsByKeys(nets, asc) do
	 if(k ~= "") then
	    print("\t<option")
	    if(k == selected_network) then print(" selected") end
	    print(">"..k.."</option>\n")
	    selected_found = true
	 end
   end

print [[
</select>

<script>
]] print(jsFormCSRF('ndpiprotosform', true)) print[[

$("#network").change(function() {
   document.location.href = "]] print(ntop.getHttpPrefix()) print [[/lua/if_stats.lua?page=filtering&network="+$("#network").val();
});
</script>
</form>
]]

if((selected_found == true)
      and (string.contains(selected_network, "/32")
	   or string.contains(selected_network, "/128"))) then
   nw = string.gsub(selected_network, "/32", "");
   nw = string.gsub(nw, "/128", "");
   print("&nbsp;[ <A HREF=\""..ntop.getHttpPrefix().."/lua/host_details.lua?host="..nw.."\"><i class=\"fa fa-desktop fa-lg\"></i> Show Host</A> ] ")
   
end

if selected_network ~= any_net then
   print[[<form id="deletePolicyForm" style="display:inline;" action="]] print(ntop.getHttpPrefix()) print [[/lua/if_stats.lua" method="get">
     <input type=hidden name=page value="filtering">
     <input type=hidden name=delete_network value="]] print(selected_network) print[["/>
     [ <a href="javascript:void(0);" onclick="$('#deletePolicyForm').submit();"> <i class="fa fa-trash-o fa-lg"></i> Delete ]]print(selected_network) print[[</a> ]
     </form>]]
   print(jsFormCSRF("deletePolicyForm"))
end
print('</td></tr>')

-- ******************************************

function print_network_shapers(shapers, curshaper_id)
   if(curshaper_id == "") then curshaper_id = "0" else curshaper_id = tostring(curshaper_id) end
   
   for _,shaper in ipairs(shapers) do
      print("<option value="..shaper.id)
      if(shaper.id == curshaper_id) then print(" selected") end
      print(">"..shaper.id.." (")

      print(maxRateToString(shaper.rate)..")</option>\n")
   end
end

print [[
<tr><th nowrap>Ingress Shaper Id</th><td>
<select name="ingress_shaper_id" id="ingress_shaper_id">
   ]]

   local shapers = shaper_utils.getSortedShapers(ifid)
   key = "ntopng.prefs.".. ifid ..".l7_policy_ingress_shaper_id"
   ingress_shaper_id = ntop.getHashCache(key, selected_network)
   print_network_shapers(shapers, ingress_shaper_id)

print [[
</select><br><small>Specify the max <u>ingress</u> transmission bandwidth to be associated to this network/host.</small></td>
   ]]

-- ******************************************

print [[
<th nowrap>Egress Shaper Id</th><td>
<select name="egress_shaper_id" id="egress_shaper_id">
   ]]

   key = "ntopng.prefs.".. ifid ..".l7_policy_egress_shaper_id"
   egress_shaper_id = ntop.getHashCache(key, selected_network)
   print_network_shapers(shapers, egress_shaper_id)

print [[
</select><br><small>Specify the max <u>egress</u> transmission bandwidth to be associated to this network/host.</small></td></tr>
   ]]

-- ******************************************

print [[
<tr><td colspan=4 style="padding:2em 1em;">
  <input type=hidden id=blacklist name=blacklist value="">
  <select multiple="multiple" size="10" name="ndpiprotos">
]]

blacklist = { }
rules = ntop.getHashCache(policy_key, selected_network)
if((rules ~= nil) and (string.len(rules) > 0)) then
   local protos = split(rules, ",")
   for k,v in pairs(protos) do
      blacklist[v] = 1
   end
end

   protos = interface.getnDPIProtocols()

   for k,v in pairsByKeys(protos, asc) do
      if((k ~= "GRE")
	    and (k ~= "BGP")
	    and (k ~= "IGMP")
	    and (k ~= "IPP")
	    and (k ~= "IP_in_IP")
	    and (k ~= "OSPF")
	    and (k ~= "PPTP")
	    and (k ~= "SCTP")
	    and (k ~= "TFTP")
      ) then
	 print("<option value=\""..v.."\"")

	 --print(""..v.."<p>")
	 if(blacklist[v] ~= nil) then
	    print(" selected=\"selected\"")
	 end

	 print(">"..k.."</option>\n")
      end
   end

   print [[
    </select>
    </td></tr>
    <tr><td colspan=4><button type="submit" class="btn btn-primary btn-block">Set Protocol Policy and Shaper</button></td></tr>

<script>
    function validateAddNetworkForm(form, vlan_field_id) {
      var badnet_invalid_msg = "<strong>Warning</strong> Invalid VLAN/network specified.";
      var badnet_existing_msg = "<strong>Warning</strong> Specified VLAN/network policy exists.";
      var network_field_id = "#" + getNetworkInputField();
      var netval = $(network_field_id).val();
    
      if(is_network_mask(netval)) {
         var vlan= $(vlan_field_id).val();
         if((vlan >= 0) && (vlan <= 4095)) {
            var existing = false;
            var fullval = netval + "@" + vlan;
            $("#network > option").each(function(){ if(this.value == fullval) existing=true; });
            
            if (! existing) {
               $('#badnet').hide();
               $('input[name="new_network"]').val(netval);
               return true;
            } else {
               $('#badnet').html(badnet_existing_msg);
               $('#badnet').show();
               return false;
            }
         } else {
            $('#badnet').html(badnet_invalid_msg);
            $('#badnet').show();
            return false;
         }
      } else {
         //alert("Invalid network specified");
         $('#badnet').html(badnet_invalid_msg);
         $('#badnet').show();
         return false;
      }
   }

   function toggleCustomNetworkMode(form) {
      var n_custom = document.getElementById("new_custom_network");
      var n_local = document.getElementById("new_network");
      var custom_mode = (n_custom.style.display != "none");

      if (custom_mode) {
         n_custom.style.display = "none";
         n_local.style.display = "inline";
      } else {
         n_custom.style.display = "inline";
         n_custom.value = n_local.value;
         n_local.style.display = "none";
      }

      $('#badnet').hide();
   }

   function getNetworkInputField() {
      var n_custom = document.getElementById("new_custom_network");
      var custom_mode = (n_custom.style.display != "none");
      if (custom_mode)
         return "new_custom_network";
      else
         return "new_network";
   }
</script>
</table>
</div>
]]

-- ==== Create policies tab ====

print[[
<div id="create" class="tab-pane">
   <table class="table table-striped table-bordered">
   <form id="createPolicyForm" class="form-inline" onsubmit="return validateAddNetworkForm(this, '#new_vlan');">
      <input type=hidden name=page value="filtering">
      <input type=hidden name="new_network">
   <tr>
      <th style="width:16em;">Target Network:</th>
      <td>
         <div id="badnet" class="alert alert-danger" style="display: none"></div>
]]
locals = ntop.getLocalNetworks()
locals_empty = (next(locals) == nil)
print[[
         <input id="new_custom_network" type="text" class="form-control" style="width:12em; margin-right:1em;]] if not locals_empty then print(' display:none') end print[[">
]]

if not locals_empty then
   print('<select class="form-control" id="new_network" style="width:12em; margin-right:1em; display:inline;">')
   for s,_ in pairs(locals) do
      print('<option value="'..s..'">'..s..'</option>\n')
   end
   print('</select>')
   print('<button type="button" class="btn btn-default btn-sm fa fa-pencil" onclick="toggleCustomNetworkMode();"></button>')
end
   print[[
      </td>
   </tr>
   <tr>
      <th>Initial Policy:</th>
      <td>
         <div class="btn-group" data-toggle="buttons-radio">
            <button id="bt_initial_empty" type="button" class="btn btn-primary" value="empty">Empty</button>
            <button id="bt_initial_clone" type="button" class="btn btn-default" value="clone">Clone</button>
         </div>
         <span id="clone_from" style="display:none;"><span style="margin: 0 1em 0 1em;">from</span>
            <select id="clone_from_select" class="form-control" style="display:inline; width:12em;">]]
for k,v in pairsByKeys(nets, asc) do
   if(k ~= "") then
      print("\t<option>"..k.."</option>\n")
   end
end
      print[[</span></select></td>
   </tr>
   <tr>
      <th>VLAN</th>
      <td>
         <input type="text" class=form-control id="new_vlan" name="new_vlan" value="0" style="width:4em;">
      </td>
   </tr>
   <tr>
      <td></td>
      <td>
         <button type="submit" class="btn btn-primary">Create Policy</button>
      </td>
   </tr>
</form>
</table>
</div>

  <script>
    ]] print(jsFormCSRF('createPolicyForm', true)) print[[
    var ndpiprotos1 = $('select[name="ndpiprotos"]').bootstrapDualListbox({
			nonSelectedListLabel: 'White Listed Protocols for ]] print(selected_network) print [[',
			selectedListLabel: 'Black Listed Protocols for ]] print(selected_network) print [[',
			moveOnSelect: false
		      });
    $("#ndpiprotosform").submit(function() {
      // alert($('[name="ndpiprotos"]').val());
      $('#blacklist').val($('[name="ndpiprotos"]').val());
      return true;
    });
   $(".btn-group button").click(function () {
      var active;
      var inactive;
      if ($(this).val() == "empty") {
         active = "#bt_initial_empty";
         inactive = "#bt_initial_clone";
         $("#clone_from").css("display", "none");
         $("#clone_from_select").removeAttr("clone_policy");
      } else {
         active = "#bt_initial_clone";
         inactive = "#bt_initial_empty";
         $("#clone_from").css("display", "inline");
         $("#clone_from_select").attr("name", "clone_policy");
      }
      $(active).removeClass("btn-default").addClass("btn-primary");
      $(inactive).removeClass("btn-primary").addClass("btn-default");
   });
  </script>
]]

-- ==== Manage shapers tab ====

print[[
  <div id="shapers" class="tab-pane">
   <form id="deleteShaperForm">
      <input type="hidden" name="page" value="filtering">
      <input type="hidden" name="delete_shaper" value="">
   </form>
   <form id="addShaperForm">
      <input type="hidden" name="page" value="filtering">
      <input type="hidden" name="add_shapers" value="">
   </form>

   <form id="modifyShapersForm">
      <input type="hidden" name="page" value="filtering">
      <input type="hidden" name="add_shapers" value="">
   <div id="table-shapers"></div>
   
   <script>
   function shaperRateTextField(td_object, shaper_id, value) {
      var input = $('<input name="shaper_' + shaper_id + '" class="no-spinner" type="number" min="-1"/>');
      input.val(value);
      td_object.html(input);
   }

   /* The next id to assign to new shapers */
   var nextShaperId = 0;
   
   /* The max if of existing (redis) shapers */
   var maxStoredShaperId = -1;
   
   function addNewShaper() {
      var shaperId = nextShaperId;
      /*nextShaperId += 1;*/

      var form_obj = $("#addShaperForm");
      form_obj.append($('<input type="hidden" name="shaper_' + shaperId + '" value="-1"/>'));
      form_obj.submit();

      /*tr_obj = $('<tr><td class="text-center">'+shaperId+'</td><td></td><td></td><td class="text-center"></td></tr>');
      $("#table-shapers tr:last").after(tr_obj);
      shaperRateTextField($("td:nth-child(2)", tr_obj), shaperId, -1);
      addShaperActionsToRow(tr_obj, shaperId);*/
   }

   function deleteShaper(shaper_id) {
      /*if (shaper_id > maxStoredShaperId) {
          the shaper was added manually, just remove */
         /*$("#table-shapers td:nth-child(1)").filter(function() {
            return $(this).html() == shaper_id;
         }).each(function(){
            $(this).parent().remove();
         })
      } else {*/
      
      var form = $("#deleteShaperForm");
      var todel = $("input[name='delete_shaper']", form);

      todel.val(shaper_id);
      form.submit();
   }

   function addShaperActionsToRow(tr_obj, shaper_id) {
      if (shaper_id != ]] print(shaper_utils.DEFAULT_SHAPER_ID) print[[) {
         var td_obj = $("td:nth-child(4)", tr_obj);
         td_obj.html('<a href="javascript:void(0)" class="add-on" onclick="deleteShaper(' + shaper_id + ')" role="button"><span class="label label-danger">Delete</span></a>');
      }
   }
   
   $("#table-shapers").datatable({
      url: "]]
   print (ntop.getHttpPrefix())
   print [[/lua/get_shapers.lua?ifid=]] print(ifid.."") print[[",
      showPagination: true,
      perPage: 10,
      title: "",
      buttons: [
         '<a id="addNewShaperBtn" onclick="addNewShaper()" role="button" class="add-on btn" data-toggle="modal"><i class="fa fa-plus" aria-hidden="true"></i></a>'
      ], columns: [
         {
            title: "Shaper Id",
            field: "column_shaper_id",
            css: {
               textAlign: 'center',
               width: '10%'
            }
         }, {
            title: "Max Rate (Kbps)",
            field: "column_max_rate",
            css : {
               width: '10%'
            }
         }, {
            title: "Applied to",
            field: "column_used_by"
         }, {
            title: "Actions",
            css : {
               width: '10%',
               textAlign: 'center'
            }
         }
      ], tableCallback: function() {
         /* Make max rate editable */
         $("#table-shapers tr").each(function(i) {
            var shaper_id = $("td:nth-child(1)", $(this));
            var max_rate = $("td:nth-child(2)", $(this));
            
            shaperRateTextField(max_rate, shaper_id.html(), max_rate.html());
            addShaperActionsToRow($(this), shaper_id.html());
         });

         /* Find out what a new shaper ID could be */
         $("#table-shapers td:nth-child(1)").each(function() {
            nextShaperId = Math.max(nextShaperId, parseInt($(this).html())+1);
         });
         maxStoredShaperId = nextShaperId - 1;

         $("#dt-bottom-details").append('<button class="btn btn-primary btn-block" style="width:30%; margin:1em auto" type="submit">Save Shapers Settings</button>')

         /* Only enable add button if we are in the last page */
         var lastpage = $("#dt-bottom-details .pagination li:nth-last-child(3)");
         $("#addNewShaperBtn").attr("disabled", ((lastpage.length == 1) && (lastpage.hasClass("active") == false)));
      }
   });
   ]] print(jsFormCSRF('modifyShapersForm', true)) print[[
   ]] print(jsFormCSRF('deleteShaperForm', true)) print[[
   ]] print(jsFormCSRF('addShaperForm', true)) print[[
</script>]]

print [[</form>
  NOTES
<ul>
<li>Shaper 0 is the default shaper used for local hosts that have no shaper defined.
<li>Set max rate to:<ul><li>-1 for no shaping<li>0 for dropping all traffic</ul>
</ul>
</div>

<script>
   /*** Page Tab State ***/
   $('#filterPageTabPanel a').click(function(e) {
     e.preventDefault();
     $(this).tab('show');
   });

   // store the currently selected tab in the hash value
   $("ul.nav-tabs > li > a").on("shown.bs.tab", function(e) {
      var id = $(e.target).attr("href").substr(1);
      if(history.replaceState) {
         // this will prevent the 'jump' to the hash
         history.replaceState(null, null, "#"+id);
      } else {
         // fallback
         window.location.hash = id;
      }
   });

   // on load of the page: switch to the currently selected tab
   var hash = window.location.hash;
   $('#filterPageTabPanel a[href="' + hash + '"]').tab('show');
   /*** End Page Tab State ***/
</script>
]]

elseif page == "traffic_report" then
   dofile(dirs.installdir .. "/pro/scripts/lua/enterprise/traffic_report.lua")
end

dofile(dirs.installdir .. "/scripts/lua/inc/footer.lua")

print("<script>\n")
print("var last_pkts  = " .. ifstats.stats.packets .. ";\n")
print("var last_drops = " .. ifstats.stats.drops .. ";\n")

if(ifstats["bridge.device_a"] ~= nil) then
   print("var last_epoch  = 0;\n")
   print("var a_to_b_last_in_pkts  = " .. ifstats["bridge.a_to_b.in_pkts"] .. ";\n")
   print("var a_to_b_last_out_pkts  = " .. ifstats["bridge.a_to_b.out_pkts"] .. ";\n")
   print("var a_to_b_last_in_bytes  = " .. ifstats["bridge.a_to_b.in_bytes"] .. ";\n")
   print("var a_to_b_last_out_bytes  = " .. ifstats["bridge.a_to_b.out_bytes"] .. ";\n")
   print("var a_to_b_last_filtered_pkts  = " .. ifstats["bridge.a_to_b.filtered_pkts"] .. ";\n")
   print("var a_to_b_last_shaped_pkts  = " .. ifstats["bridge.a_to_b.shaped_pkts"] .. ";\n")
   print("var a_to_b_last_num_pkts_send_buffer_full  = " .. ifstats["bridge.a_to_b.num_pkts_send_buffer_full"] .. ";\n")
   print("var a_to_b_last_num_pkts_send_error  = " .. ifstats["bridge.a_to_b.num_pkts_send_error"] .. ";\n")

   print("var b_to_a_last_in_pkts  = " .. ifstats["bridge.b_to_a.in_pkts"] .. ";\n")
   print("var b_to_a_last_out_pkts  = " .. ifstats["bridge.b_to_a.out_pkts"] .. ";\n")
   print("var b_to_a_last_in_bytes  = " .. ifstats["bridge.b_to_a.in_bytes"] .. ";\n")
   print("var b_to_a_last_out_bytes  = " .. ifstats["bridge.b_to_a.out_bytes"] .. ";\n")
   print("var b_to_a_last_filtered_pkts  = " .. ifstats["bridge.b_to_a.filtered_pkts"] .. ";\n")
   print("var b_to_a_last_shaped_pkts  = " .. ifstats["bridge.b_to_a.shaped_pkts"] .. ";\n")
   print("var b_to_a_last_num_pkts_send_buffer_full  = " .. ifstats["bridge.b_to_a.num_pkts_send_buffer_full"] .. ";\n")
   print("var b_to_a_last_num_pkts_send_error  = " .. ifstats["bridge.b_to_a.num_pkts_send_error"] .. ";\n")
end

if(ifstats.zmqRecvStats ~= nil) then
   print("var last_zmq_time = 0;\n")
   print("var last_zmq_flows = ".. ifstats.zmqRecvStats.flows .. ";\n")
   print("var last_zmq_events = ".. ifstats.zmqRecvStats.events .. ";\n")
   print("var last_zmq_counters = ".. ifstats.zmqRecvStats.counters .. ";\n")
end
   
print [[

var resetInterfacePacketDrops = function() {
$.ajax({ type: 'GET',
  url: ']]
print (ntop.getHttpPrefix())
print [[/lua/reset_stats.lua?action=reset_interface_packet_drops',
  success: function(rsp) {}
});
}

setInterval(function() {
      $.ajax({
	  type: 'GET',
	  url: ']]
print (ntop.getHttpPrefix())
print [[/lua/network_load.lua',
	  data: { ifname: "]] print(tostring(interface.name2id(ifstats.name))) print [[" },
	  success: function(rsp) {
	var v = bytesToVolume(rsp.bytes);
	$('#if_bytes').html(v);

        if (typeof rsp.zmqRecvStats !== 'undefined') {
           var diff, time_diff, label;
           var now = (new Date()).getTime();

           if(last_zmq_time > 0) {
              time_diff = now - last_zmq_time;
              diff = rsp.zmqRecvStats.flows - last_zmq_flows;

              if(diff > 0) {
                 rate = ((diff * 1000)/time_diff).toFixed(1);
                 label = " ["+rate+" Flows/sec] "+get_trend(1,0);
              } else {
                 label = " "+get_trend(0,0);
              }
           } else {
              label = " "+get_trend(0,0);
           }
           $('#if_zmq_flows').html(addCommas(rsp.zmqRecvStats.flows)+label); 
           $('#if_zmq_events').html(addCommas(rsp.zmqRecvStats.events)+" "+get_trend(rsp.zmqRecvStats.events, last_zmq_events)); 
           $('#if_zmq_counters').html(addCommas(rsp.zmqRecvStats.counters)+" "+get_trend(rsp.zmqRecvStats.counters, last_zmq_counters)); 

           last_zmq_flows = rsp.zmqRecvStats.flows;
           last_zmq_events = rsp.zmqRecvStats.events;
           last_zmq_counters = rsp.zmqRecvStats.counters;
           last_zmq_time = now;
        }

	$('#if_pkts').html(addCommas(rsp.packets)+"]]

print(" Pkts\");")
print [[
	var pctg = 0;
	var drops = "";
	var last_pkt_retransmissions = ]] print(ifstats.tcpPacketStats.retransmissions) print [[;
	var last_pkt_ooo =  ]] print(ifstats.tcpPacketStats.out_of_order) print [[;
	var last_pkt_lost = ]] print(ifstats.tcpPacketStats.lost) print [[;

	$('#pkt_retransmissions').html(fint(rsp.tcpPacketStats.retransmissions)+" Pkts"); $('#pkt_retransmissions_trend').html(get_trend(last_pkt_retransmissions, rsp.tcpPacketStats.retransmissions));
	$('#pkt_ooo').html(fint(rsp.tcpPacketStats.out_of_order)+" Pkts");  $('#pkt_ooo_trend').html(get_trend(last_pkt_ooo, rsp.tcpPacketStats.out_of_order));
	$('#pkt_lost').html(fint(rsp.tcpPacketStats.lost)+" Pkts"); $('#pkt_lost_trend').html(get_trend(last_pkt_lost, rsp.tcpPacketStats.lost));
	last_pkt_retransmissions = rsp.tcpPacketStats.retransmissions;
	last_pkt_ooo = rsp.tcpPacketStats.out_of_order;
	last_pkt_lost = rsp.tcpPacketStats.lost;

	$('#pkts_trend').html(get_trend(last_pkts, rsp.packets));
	$('#drops_trend').html(get_trend(last_drops, rsp.drops));
	last_pkts = rsp.packets
	last_drops = rsp.drops;

	if((rsp.packets+rsp.drops) > 0) { pctg = ((rsp.drops*100)/(rsp.packets+rsp.drops)).toFixed(2); }
	if(rsp.drops > 0) { drops = '<span class="label label-danger">'; }
	drops = drops + addCommas(rsp.drops)+" ]]

print("Pkts")
print [[";

	if(pctg > 0)      { drops  += " [ "+pctg+" % ]"; }
	if(rsp.drops > 0) { drops  += '</span>'; }
	$('#if_drops').html(drops);

        var button_reset = ""
	if(rsp.drops > 0) {
          var button_reset = '<button type="button" class="btn btn-secondary btn-xs" onclick="resetInterfacePacketDrops();">Reset Drops</button>';
        }
        $('#button_reset_drops').html(button_reset);

        $('#exported_flows').html(fint(rsp.flow_export_count));
        $('#exported_flows_rate').html(Math.round(rsp.flow_export_rate * 100) / 100);
        if(rsp.flow_export_drops > 0) {
          $('#exported_flows_drops')
            .addClass("label label-danger")
            .html(rsp.flow_export_drops);
          if(rsp.flow_export_count > 0) {
            $('#exported_flows_drops_pct')
              .addClass("label label-danger")
              .html("[" + Math.round(rsp.flow_export_drops / rsp.flow_export_count * 100 * 1000) / 1000 + "%]");
          }
        }
]]

if(ifstats["bridge.device_a"] ~= nil) then
print [[
   epoch_diff = rsp["epoch"]-last_epoch;
   $('#a_to_b_in_pkts').html(addCommas(rsp["a_to_b_in_pkts"])+" Pkts "+get_trend(a_to_b_last_in_pkts, rsp["a_to_b_in_pkts"]));
   if((last_epoch > 0) && (epoch_diff > 0)) {
      /* pps = (rsp["a_to_b_in_pkts"]-a_to_b_last_in_pkts) / epoch_diff; */
      bps = 8*(rsp["a_to_b_in_bytes"]-a_to_b_last_in_bytes) / epoch_diff;
      $('#a_to_b_in_pps').html(" ["+fbits(bps)+"]");
    }
   $('#a_to_b_out_pkts').html(addCommas(rsp["a_to_b_out_pkts"])+" Pkts "+get_trend(a_to_b_last_out_pkts, rsp["a_to_b_out_pkts"]));
   if((last_epoch > 0) && (epoch_diff > 0)) {
      /* pps = (rsp["a_to_b_out_pkts"]-a_to_b_last_out_pkts) / epoch_diff; */
      bps = 8*(rsp["a_to_b_out_bytes"]-a_to_b_last_out_bytes) / epoch_diff;
      $('#a_to_b_out_pps').html(" ["+fbits(bps)+"]");
    }

   $('#a_to_b_filtered_pkts').html(addCommas(rsp["a_to_b_filtered_pkts"])+" Pkts "+get_trend(a_to_b_last_filtered_pkts, rsp["a_to_b_filtered_pkts"]));
   $('#a_to_b_shaped_pkts').html(addCommas(rsp["a_to_b_shaped_pkts"])+" Pkts "+get_trend(a_to_b_last_shaped_pkts, rsp["a_to_b_shaped_pkts"]));
   $('#a_to_b_num_pkts_send_error').html(addCommas(rsp["a_to_b_num_pkts_send_error"])+" Pkts "+get_trend(a_to_b_last_num_pkts_send_error, rsp["a_to_b_num_pkts_send_error"]));
   $('#a_to_b_num_pkts_send_buffer_full').html(addCommas(rsp["a_to_b_num_pkts_send_buffer_full"])+" Pkts "+get_trend(a_to_b_last_num_pkts_send_buffer_full, rsp["a_to_b_num_pkts_send_buffer_full"]));

   $('#b_to_a_in_pkts').html(addCommas(rsp["b_to_a_in_pkts"])+" Pkts "+get_trend(b_to_a_last_in_pkts, rsp["b_to_a_in_pkts"]));
   if((last_epoch > 0) && (epoch_diff > 0)) {
      /* pps = (rsp["b_to_a_in_pkts"]-b_to_a_last_in_pkts) / epoch_diff; */
      bps = 8*(rsp["b_to_a_in_bytes"]-b_to_a_last_in_bytes) / epoch_diff;
      $('#b_to_a_in_pps').html(" ["+fbits(bps)+"]");
    }
   $('#b_to_a_out_pkts').html(addCommas(rsp["b_to_a_out_pkts"])+" Pkts "+get_trend(b_to_a_last_out_pkts, rsp["b_to_a_out_pkts"]));
   if((last_epoch > 0) && (epoch_diff > 0)) {
      /* pps = (rsp["b_to_a_out_pkts"]-b_to_a_last_out_pkts) / epoch_diff; */
      bps = 8*(rsp["b_to_a_out_bytes"]-b_to_a_last_out_bytes) / epoch_diff;
      $('#b_to_a_out_pps').html(" ["+fbits(bps)+"]");
    }
   $('#b_to_a_filtered_pkts').html(addCommas(rsp["b_to_a_filtered_pkts"])+" Pkts "+get_trend(b_to_a_last_filtered_pkts, rsp["b_to_a_filtered_pkts"]));
   $('#b_to_a_shaped_pkts').html(addCommas(rsp["b_to_a_shaped_pkts"])+" Pkts "+get_trend(b_to_a_last_shaped_pkts, rsp["b_to_a_shaped_pkts"]));
   $('#b_to_a_num_pkts_send_error').html(addCommas(rsp["b_to_a_num_pkts_send_error"])+" Pkts "+get_trend(b_to_a_last_num_pkts_send_error, rsp["b_to_a_num_pkts_send_error"]));
   $('#b_to_a_num_pkts_send_buffer_full').html(addCommas(rsp["b_to_a_num_pkts_send_buffer_full"])+" Pkts "+get_trend(b_to_a_last_num_pkts_send_buffer_full, rsp["b_to_a_num_pkts_send_buffer_full"]));

   a_to_b_last_in_pkts = rsp["a_to_b_in_pkts"];
   a_to_b_last_out_pkts = rsp["a_to_b_out_pkts"];
   a_to_b_last_in_bytes = rsp["a_to_b_in_bytes"];
   a_to_b_last_out_bytes = rsp["a_to_b_out_bytes"];
   a_to_b_last_filtered_pkts = rsp["a_to_b_filtered_pkts"];
   a_to_b_last_shaped_pkts = rsp["a_to_b_shaped_pkts"];
   a_to_b_last_num_pkts_send_buffer_full = rsp["a_to_b_num_pkts_send_buffer_full"];
   a_to_b_last_num_pkts_send_error = rsp["a_to_b_num_pkts_send_error"];

   b_to_a_last_in_pkts = rsp["b_to_a_in_pkts"];
   b_to_a_last_out_pkts = rsp["b_to_a_out_pkts"];
   b_to_a_last_in_bytes = rsp["b_to_a_in_bytes"];
   b_to_a_last_out_bytes = rsp["b_to_a_out_bytes"];
   b_to_a_last_filtered_pkts = rsp["b_to_a_filtered_pkts"];
   b_to_a_last_shaped_pkts = rsp["b_to_a_shaped_pkts"];
   b_to_a_last_num_pkts_send_buffer_full = rsp["b_to_a_num_pkts_send_buffer_full"];
   b_to_a_last_num_pkts_send_error = rsp["b_to_a_num_pkts_send_error"];
   last_epoch = rsp["epoch"];
]]
end

print [[
	   }
	       });
       }, 3000)

</script>

]]

print [[
	 <script type="text/javascript" src="]] print(ntop.getHttpPrefix()) print [[/js/jquery.tablesorter.js"></script>
<script>
$(document).ready(function()
    {
	$("#myTable").tablesorter();
    }
);
</script>
]]