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--
-- (C) 2013-16 - ntop.org
--
-- ########################################################
require "flow_utils"
local payload_type = 0
function isVoip(key,value)
key_label = getFlowKey(key)
if (key_label == "Total number of exported flows") then return 1 end
if (key_label =='Rtp Voice Quality') then
print("<tr><th width=30%>" .. key_label .. '</th><td colspan=2>')
MosPercentageBar(value)
print("</td></tr>\n")
return 1
elseif (key_label=='Sip Call State') then
print("<tr><th width=30%>" .. key_label .. "</th><td colspan=2>")
SipCallStatePercentageBar(value)
print("</td></tr>\n")
return 1
elseif ((key_label == 'Rtp Out Coming Payload Type') or (key_label == "Rtp Incoming Payload Type")) then
if (payload_type == 0) then
payload_type = 1
print("<tr><th width=30%>Rtp Payload Type</th><td colspan=2>"..formatRtpPayloadType(value).."</td></tr>\n")
end
return 1
elseif ((key_label == 'Rtp Out Coming Packet Delay Variation') or (key_label == "Rtp Incoming Packet Delay Variation")) then
print("<tr><th width=30%>" .. key_label .. "</th><td colspan=2>"..((value/1000)/1000).." ms</td></tr>\n")
return 1
elseif ((key_label == 'SIP_CALLED_PARTY') or (key_label == "SIP_CALLING_PARTY")) then
print("<tr><th width=30%>" .. key_label .. "</th><td colspan=2>"..spiltSipID(value).."</td></tr>\n")
return 1
end
return 0
end
function spiltSipID( id )
id = string.gsub(id, "<sip:", "")
id = string.gsub(id, ">", "")
port = split(id,":")
sip_party = split(port[1],"@")
host = interface.getHostInfo(sip_party[2])
if (host ~= nil) then
return('<A HREF="'..ntop.getHttpPrefix()..'/lua/host_details.lua?host='.. sip_party[2]..'">'.. id.. '</A>')
end
return(id)
end
-- RTP
local rtp_payload_type = {
[0] = 'PCMU',
[1] = 'reserved',
[2] = 'reserved',
[3] = 'GSM',
[4] = 'G723',
[5] = 'DVI4',
[6] = 'DVI4',
[7] = 'LPC',
[8] = 'PCMA',
[9] = 'G722',
[10] = 'L16',
[11] = 'L16',
[12] = 'QCELP',
[13] = 'CN',
[14] = 'MPA',
[15] = 'G728',
[16] = 'DVI4',
[17] = 'DVI4',
[18] = 'G729',
[25] = 'CELB',
[26] = 'JPEG',
[28] = 'NV',
[31] = 'H261',
[32] = 'MPV',
[33] = 'MP2T',
[34] = 'H263',
[35] = 'unassigned',
[71] = 'unassigned',
[76] = 'Reserved for RTCP conflict avoidance',
[72] = 'Reserved for RTCP conflict avoidance',
[73] = 'Reserved for RTCP conflict avoidance',
[74] = 'Reserved for RTCP conflict avoidance',
[75] = 'Reserved for RTCP conflict avoidance',
[76] = 'Reserved for RTCP conflict avoidance',
[95] = 'unassigned',
[96] = 'dynamic',
[127] = 'dynamic'
}
-- ########################################################
function formatRtpPayloadType(flags)
flags = tonumber(flags)
if(rtp_payload_type[flags] ~= nil) then
return(rtp_payload_type[flags])
end
return flags;
end
-- ########################################################
function MosPercentageBar(value)
total = 5
bar_class = "bar-info"
value = value /100
value_type = ""
pctg = round((value * 100) / total, 0)
if ((value >= 4.0) and (value <= 5.0)) then
print('<span class="label label-success">'..value..' MOS - Desirable</span>')
end
if ((value >= 3.6) and (value < 4.0)) then
print('<span class="label label-info">'..value..' MOS - Acceptable</span>')
end
if ((value >= 2.6) and (value < 3.6)) then
print('<span class="label label-warning">'..value..' MOS - Reach Connection</span>')
end
if ((value > 0) and (value < 2.6)) then
print('<span class="label label-danger">'..value..' MOS - Not Recommended</span>')
end
end
-- ########################################################
function SipCallStatePercentageBar(state)
-- Wireshark use different state http://wiki.wireshark.org/VoIP_calls
label_class = "label-default"
if (state == "REGISTER") then
label_class = "label-info"
end
if (state == "CALL_STARTED") then
label_class = "label-info"
end
if (state == "CALL_IN_PROGRESS") then
label_class = "label-progress"
end
if (state == "CALL_COMPLETED") then
label_class = "label-success"
end
if (state == "CALL_ERROR") then
label_class = "label-danger"
end
if (state == "CALL_CANCELED") then
label_class = "label-warning"
end
if (state == "UNKNOWN") then
label_class = "bar-warning"
end
print('<span class="label '..label_class..'">'..state..'</span>')
end
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