From 4a8dbe2d4ed073e6ef5ed6cbbce08da97c48a566 Mon Sep 17 00:00:00 2001
From: uhi22 <uhi@hnng.de>
Date: Tue, 18 Apr 2023 00:28:32 +0200
Subject: [PATCH] feature: pcapConverter runs over all pcap in directory

---
 pcapConverter.py | 74 +++++++++++++++++++++++++++++-------------------
 1 file changed, 45 insertions(+), 29 deletions(-)

diff --git a/pcapConverter.py b/pcapConverter.py
index 31b4a03..831dcc3 100644
--- a/pcapConverter.py
+++ b/pcapConverter.py
@@ -12,34 +12,50 @@
 
 import pyshark
 import exiConnector
+import os
 
-inputFileName = "efcaec23.pcap"
-cap = pyshark.FileCapture(inputFileName, display_filter="ipv6")
-fileOut = open(inputFileName + '.decoded.txt', 'w')
-#print(cap)
-#print(cap[0])
-#print(cap[1])
-#print(dir(cap[1]))
-#print(cap[1].sniff_time) # readable time
-#print(cap[1].sniff_timestamp) # epoch time
-numberOfPackets=0
-for packet in cap:
-    numberOfPackets+=1
-    #print(packet)
-    if 'TCP' in packet:
-        #print(packet.tcp.field_names)
-        if ('payload' in packet.tcp.field_names):
-            tcppayload = packet.tcp.payload # this gives a string of hex values, separated by ":", e.g. "01:fe:80:01"
-            s = tcppayload.replace(":", "") # remove colons
-            if (s[0:8]=="01fe8001"):
-                # it is a V2GTP header with EXI content
-                strExi = s[16:] # remove V2GTP header (8 bytes, means 16 hex characters)
-                sHeader = "Packet #" + str(numberOfPackets) + " [" + str(packet.sniff_time) + "] " + strExi + " means:"
-                pre = "DD" # decode DIN
-                decoded=exiConnector.exiDecode(strExi, pre)
-                print(sHeader)
-                print(decoded)
-                print(sHeader, file=fileOut)
-                print(decoded, file=fileOut)
-fileOut.close()
 
+def convertPcapToTxt(inputFileName):
+    cap = pyshark.FileCapture(inputFileName, display_filter="ipv6")
+    fileOut = open(inputFileName + '.decoded.txt', 'w')
+    #print(cap)
+    #print(cap[0])
+    #print(cap[1])
+    #print(dir(cap[1]))
+    #print(cap[1].sniff_time) # readable time
+    #print(cap[1].sniff_timestamp) # epoch time
+    numberOfPackets=0
+    for packet in cap:
+        numberOfPackets+=1
+        #print(packet)
+        if 'TCP' in packet:
+            #print(packet.tcp.field_names)
+            if ('payload' in packet.tcp.field_names):
+                tcppayload = packet.tcp.payload # this gives a string of hex values, separated by ":", e.g. "01:fe:80:01"
+                s = tcppayload.replace(":", "") # remove colons
+                if (s[0:8]=="01fe8001"):
+                    # it is a V2GTP header with EXI content
+                    strExi = s[16:] # remove V2GTP header (8 bytes, means 16 hex characters)
+                    sHeader = "Packet #" + str(numberOfPackets) + " [" + str(packet.sniff_time) + "] " + strExi + " means:"
+                    pre = "DD" # decode DIN
+                    decoded=exiConnector.exiDecode(strExi, pre)
+                    print(sHeader)
+                    print(decoded)
+                    print(sHeader, file=fileOut)
+                    print(decoded, file=fileOut)
+    fileOut.close()
+
+# assign directory
+directory = '../temp'
+
+# iterate over files in
+# that directory
+for filename in os.listdir(directory):
+    f = os.path.join(directory, filename)
+    # checking if it is a file
+    if os.path.isfile(f):
+        print(f)
+        if (f[-5:]==".pcap") or (f[-7:]==".pcapng"):
+            strFileNameWithPath = f
+            print("Will decode " + strFileNameWithPath)
+            convertPcapToTxt(strFileNameWithPath)