+++ /dev/null
-#!/usr/bin/python
-
-"""
-Script that takes a file (output by wireshark/tshark, in JSON format) and analyze
-the traffic total bytes of a certain device at a certain time.
-"""
-
-import sys
-import json
-import numpy as np
-from collections import defaultdict
-from dateutil import parser
-from decimal import *
-
-JSON_KEY_SOURCE = "_source"
-JSON_KEY_LAYERS = "layers"
-
-JSON_KEY_ETH = "eth"
-JSON_KEY_ETH_DST = "eth.dst"
-JSON_KEY_ETH_SRC = "eth.src"
-JSON_KEY_FRAME = "frame"
-JSON_KEY_FRAME_TIME = "frame.time"
-JSON_KEY_FRAME_LENGTH = "frame.len"
-TABLE_HEADER_X = "Timestamp (hh:mm:ss)"
-TABLE_HEADER_Y = "Total bytes (bytes)"
-INCOMING_APPENDIX = "_incoming"
-OUTGOING_APPENDIX = "_outgoing"
-FILE_APPENDIX = ".dat"
-
-# Use this constant as a flag
-WINDOW_SIZE = 5
-USE_MOVING_AVERAGE = False
-
-
-def moving_average(array, window=3):
- """ Calculate moving average
- Args:
- array: array of numbers
- window: window of moving average (default = 3)
- Adapted from:
- https://stackoverflow.com/questions/14313510/how-to-calculate-moving-average-using-numpy
- """
- # Check if window > len(array)
- if window > len(array):
- window = len(array)
- # Calculate cumulative sum of each array element
- retarr = np.cumsum(array, dtype=float)
- # Adjust cumulative sum of each array element
- # based on window size
- retarr[window:] = retarr[window:] - retarr[:-window]
- # Pad the first array elements with zeroes
- retarr[:window - 1] = np.zeros(window - 1)
- # Calculate moving average starting from the element
- # at window size, e.g. element 4 for window=5
- retarr[window - 1:] = retarr[window - 1:] / window
- return retarr
-
-
-def save_to_file(tblheader, dictionary, filenameout):
- """ Show summary of statistics of PCAP file
- Args:
- tblheader: header for the saved table
- dictionary: dictionary to be saved
- filename_out: file name to save
- """
- # Appending, not overwriting!
- f = open(filenameout, 'a')
- # Write the table header
- f.write("# " + tblheader + "\n")
- f.write("# " + TABLE_HEADER_X + " " + TABLE_HEADER_Y + "\n")
- # Write "0 0" if dictionary is empty
- if not dictionary:
- f.write("0 0")
- f.close()
- print "Writing zeroes to file: ", filenameout
- return
-
- if USE_MOVING_AVERAGE:
- # Use moving average if this flag is true
- sortedarr = []
- for key in sorted(dictionary):
- sortedarr.append(dictionary[key])
- valarr = moving_average(sortedarr, WINDOW_SIZE)
- #print vallist
- # Iterate over dictionary and write (key, value) pairs
- ind = 0
- for key in sorted(dictionary):
- # Space separated
- f.write(str(key) + " " + str(valarr[ind]) + "\n")
- ind += 1
- else:
- # Iterate over dictionary and write (key, value) pairs
- for key in sorted(dictionary):
- # Space separated
- f.write(str(key) + " " + str(dictionary[key]) + "\n")
- f.close()
- print "Writing output to file: ", filenameout
-
-
-def main():
- """ Main function
- """
- if len(sys.argv) < 5:
- print "Usage: python", sys.argv[0], "<input_file> <output_file> <device_name> <mac_address>"
- return
- # Parse the file for the specified MAC address
- timefreq_incoming = parse_json(sys.argv[1], sys.argv[4], True)
- timefreq_outgoing = parse_json(sys.argv[1], sys.argv[4], False)
- # Write statistics into file
- print "====================================================================="
- print "==> Analyzing incoming traffic ..."
- save_to_file(sys.argv[3] + INCOMING_APPENDIX, timefreq_incoming, sys.argv[2] + INCOMING_APPENDIX + FILE_APPENDIX)
- print "====================================================================="
- print "==> Analyzing outgoing traffic ..."
- save_to_file(sys.argv[3] + OUTGOING_APPENDIX, timefreq_outgoing, sys.argv[2] + OUTGOING_APPENDIX + FILE_APPENDIX)
- print "====================================================================="
- #for time in time_freq.keys():
- #for key in sorted(time_freq):
- # print key, " => ", time_freq[key]
- #print "====================================================================="
-
-
-# Convert JSON file containing DNS traffic to a map in which a hostname points to its set of associated IPs.
-def parse_json(filepath, macaddress, incomingoutgoing):
- """ Show summary of statistics of PCAP file
- Args:
- filepath: path of the read file
- macaddress: MAC address of a device to analyze
- incomingoutgoing: boolean to define whether we collect incoming or outgoing traffic
- True = incoming, False = outgoing
- """
- # Maps timestamps to frequencies of packets
- packetbytes = dict()
- with open(filepath) as jf:
- # Read JSON.
- # data becomes reference to root JSON object (or in our case json array)
- data = json.load(jf)
- # Loop through json objects in data
- # Each entry is a pcap entry (request/response (packet) and associated metadata)
- for p in data:
- # p is a JSON object, not an index
- layers = p[JSON_KEY_SOURCE][JSON_KEY_LAYERS]
- # Get timestamp
- frame = layers.get(JSON_KEY_FRAME, None)
- datetime = frame.get(JSON_KEY_FRAME_TIME, None)
- bytes = frame.get(JSON_KEY_FRAME_LENGTH, None)
- # Get into the Ethernet address part
- eth = layers.get(JSON_KEY_ETH, None)
- # Skip any non DNS traffic
- if eth is None:
- print "[ WARNING: Packet has no ethernet address! ]"
- continue
- # Get source and destination MAC addresses
- src = eth.get(JSON_KEY_ETH_SRC, None)
- dst = eth.get(JSON_KEY_ETH_DST, None)
- # Get just the time part
- datetimeobj = parser.parse(datetime)
- # Remove the microsecond part
- timestr = str(datetimeobj.time())[:8]
- print str(timestr) + " - src:" + str(src) + " - dest:" + str(dst)
- # Get and count the traffic for the specified MAC address
- if incomingoutgoing:
- if dst == macaddress:
- # Check if timestamp already exists in the map
- # If yes, then just accumulate the value
- if timestr in packetbytes:
- packetbytes[timestr] = packetbytes[timestr] + Decimal(bytes)
- else: # If not, then put the value there
- packetbytes[timestr] = Decimal(bytes)
- else:
- if src == macaddress:
- # Check if timestamp already exists in the map
- # If yes, then just accumulate the value
- if timestr in packetbytes:
- packetbytes[timestr] = packetbytes[timestr] + Decimal(bytes)
- else: # If not, then put the value there
- packetbytes[timestr] = Decimal(bytes)
-
- return packetbytes
-
-
-if __name__ == '__main__':
- main()
-
projects / pingpong.git / blobdiff