GPRS: Add something that should have become a histogram display...
One small problem... there is no way to be called at the end of
reading a pcap file...
diff --git a/openbsc/contrib/gprs/gprs-bssgp-histogram.lua b/openbsc/contrib/gprs/gprs-bssgp-histogram.lua
new file mode 100644
index 0000000..d1a2049
--- /dev/null
+++ b/openbsc/contrib/gprs/gprs-bssgp-histogram.lua
@@ -0,0 +1,62 @@
+-- Simple LUA script to print the size of BSSGP messages over their type...
+
+do
+ local ip_bucket = {}
+
+ local function init_listener()
+ -- handle the port as NS over IP
+ local udp_port_table = DissectorTable.get("udp.port")
+ local gprs_ns_dis = Dissector.get("gprs_ns")
+ udp_port_table:add(23000,gprs_ns_dis)
+
+ -- bssgp filters
+ local bssgp_pdu_get = Field.new("bssgp.pdu_type")
+ local udp_length_get = Field.new("udp.length")
+
+ local tap = Listener.new("ip", "udp.port == 23000")
+ function tap.packet(pinfo,tvb,ip)
+ local pdu = bssgp_pdu_get()
+ local len = udp_length_get()
+
+ -- only handle bssgp, but we also want the IP frame
+ if not pdu then
+ return
+ end
+
+ pdu = tostring(pdu)
+ if tonumber(pdu) == 0 or tonumber(pdu) == 1 then
+ return
+ end
+
+ local ip_src = tostring(ip.ip_src)
+ local bssgp_histo = ip_bucket[ip_src]
+ if not bssgp_histo then
+ bssgp_histo = {}
+ ip_bucket[ip_src] = bssgp_histo
+ end
+
+ local key = pdu
+ local bucket = bssgp_histo[key]
+ if not bucket then
+ bucket = {}
+ bssgp_histo[key] = bucket
+ end
+
+ table.insert(bucket, tostring(len))
+ print("IP: " .. ip_src .. " PDU: " .. pdu .. " Length: " .. tostring(len))
+ end
+
+ function tap.draw()
+ -- well... this will not be called...
+-- for ip,bssgp_histo in pairs(dumpers) do
+-- print("IP " .. ip)
+-- end
+ end
+
+ function tap.reset()
+ -- well... this will not be called...
+ end
+ end
+
+ init_listener()
+end