Write a Python program named extractFrame.py. In the program, you need to approach the below tasks.
Below all this is the wireShark.txt file below the Script which I have labeled.
Task 1: Create Frame Class
...
Write a Python program named extractFrame.py. In the program, you need to approach the below tasks.
Below all this is the wireShark.txt file below the Script which I have labeled.
Task 1: Create Frame Class
The first task is to define a Frame class. From the class, you can create Frame objects.
In the skeleton code provided below, the class contains some methods you need to define in the class.
In [13]:
class Frame:
"""
A Frame is use to represent a data frame described in the given file.
Attributes:
id: int, frame number id such as 1 of frame 1 in the given file
src: str, source address such as "00:14:ee:08:dd:b1" of frame 1
dec: str, destination address such as "01:00:5e:7f:ff:fa" of frame 1
ftype: str, frame type such as "0x800" that describes the IPv4 protocol of frame 1
Methods:
__init__
__str__
setAddress: set either src or dec
setFrameType: set ftype value
"""
def __init__(self, n, src="", dst="", ftype=""):
"""
n: an int set as the id of the Frame object
src: a str set as the source address
dst: a str set as the destination address
ftype: a str set as the fame type
"""
pass
def setAddress(self, address, isSrc):
"""
address: a string to set as src or dst address
isSrc: a bool, if it is True, set src as address and otherwise set dst as address
"""
pass
def setFrameType(self, ftype):
"""
ftype: a string to set as ftype value
"""
pass
def __str__(self):
"""
Returns a string to represent the Frame object. For example, frame 1
in the given file could be represented as:
Frame 1, Src:00:14:ee:08:dd:b1, Dst:01:00:5e:7f:ff:fa, Type:0x0800
"""
pass
Task 2: Define Function extractFrames
The second task is to define a function extractFrames. Note that you can define any other helper functions that can be called in your extractFrames definition.
In [11]:
def extractFrames(infilename, src_encoding="utf-8"):
"""
infilename: str, input file name such as "wireShark.txt"
src_encoding: str, encoding used to open the input file
Returns a list of Frame objects
"""
inputfile = open(infilename, "r", encoding = src_encoding)
pass
After the above function is defined, you need to call extractFrames to analyze the frames in the provided text file. Then, you need to display all frames with the essential data. You can use below code to evaluate the function definition.
frames = extractFrames("wireshark.txt" )
for f in frames:
print(f)
Below is the result that should be displayed by running your program based on the given text file:
Frame 1, Src:00:14:ee:08:dd:b1, Dst:01:00:5e:7f:ff:fa, Type:0x0800
Frame 2, Src:00:14:ee:08:dd:b1, Dst:01:00:5e:7f:ff:fa, Type:0x0800
Frame 3, Src:cc:2f:71:3e:ca:a1, Dst:14:91:82:36:7a:8d, Type:0x0800
Frame 4, Src:cc:2f:71:3e:ca:a1, Dst:14:91:82:36:7a:8d, Type:0x0800
Frame 5, Src:cc:2f:71:3e:ca:a1, Dst:14:91:82:36:7a:8d, Type:0x0800
Frame 6, Src:14:91:82:36:7a:8d, Dst:cc:2f:71:3e:ca:a1, Type:0x0800
Frame 7, Src:14:91:82:36:7a:8d, Dst:cc:2f:71:3e:ca:a1, Type:0x0800
Note that if there are more frames given in the input file "wireShark.txt", your Python program should be able to extract all the frames with the expected presentation. (That is, you cannot hard code the output based on the given file!)
Hints and Notes
To approach the problems, you may need to use certain methods and functions to analyze and manipulate the lines in the given text file. For example, you may need to find if a substring, such as "Frame" or "Type:", appears on a line. You may also need to split a line into multiple parts, or slice a string in order to get a substring of it.
Below I provide some Python code examples to provide you clues on which methods/functions you could use and how to use them.
In [4]:
#How to check if a substring is on a line? Hint: use the find method
seedStr = "Internet Protocol Version 4"
a_str = "Internet Protocol Version 4, Src: 192.168.1.180, Dst: 239.255.255.250"
x = a_str.find(seedStr)
print(x)
#should print 0
x_str ="(I am Joshua)"
x = x_str.find(seedStr)
print(x)
#should print -1
#How to extract a substring from a line? Hint: slice the string!
x = x_str[1:len(x_str)-1]
print(x)
#should print "I am Joshua"
#How to split a line into several parts? Hint: use split method!
a_str = "Internet Protocol Version 4, Src: 192.168.1.180, Dst: 239.255.255.250"
a_parts = a_str.split(", ")
print(a_parts)
#should print ['Internet Protocol Version 4', 'Src: 192.168.1.180', 'Dst: 239.255.255.250']
x = a_parts[0]
words = x.split() #default split token is white space
print(words)
#should print ['Internet', 'Protocol', 'Version', '4']
wireShark.txt file
Frame 1: 372 bytes on wire (2976 bits), 372 bytes captured (2976 bits) on interface 0
Ethernet II, Src: WesternD_08:dd:b1 (00:14:ee:08:dd:b1), Dst: IPv4mcast_7f:ff:fa (01:00:5e:7f:ff:fa)
Destination: IPv4mcast_7f:ff:fa (01:00:5e:7f:ff:fa)
Address: IPv4mcast_7f:ff:fa (01:00:5e:7f:ff:fa)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: WesternD_08:dd:b1 (00:14:ee:08:dd:b1)
Address: WesternD_08:dd:b1 (00:14:ee:08:dd:b1)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 192.168.1.180, Dst: 239.255.255.250
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 358
Identification: 0xfe2a (65066)
Flags: 0x4000, Don't fragment
Time to live: 4
Protocol: UDP (17)
Header checksum: 0xc505 [validation disabled]
[Header checksum status: Unverified]
Source: 192.168.1.180
Destination: 239.255.255.250
User Datagram Protocol, Src Port: 35064, Dst Port: 1900
Simple Service Discovery Protocol
No. Time Source Destination Protocol Length Info
2 0.307821 192.168.1.180 239.255.255.250 SSDP 422 NOTIFY * HTTP/1.1
Frame 2: 422 bytes on wire (3376 bits), 422 bytes captured (3376 bits) on interface 0
Ethernet II, Src: WesternD_08:dd:b1 (00:14:ee:08:dd:b1), Dst: IPv4mcast_7f:ff:fa (01:00:5e:7f:ff:fa)
Destination: IPv4mcast_7f:ff:fa (01:00:5e:7f:ff:fa)
Address: IPv4mcast_7f:ff:fa (01:00:5e:7f:ff:fa)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: WesternD_08:dd:b1 (00:14:ee:08:dd:b1)
Address: WesternD_08:dd:b1 (00:14:ee:08:dd:b1)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 192.168.1.180, Dst: 239.255.255.250
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 408
Identification: 0xfe2d (65069)
Flags: 0x4000, Don't fragment
Time to live: 4
Protocol: UDP (17)
Header checksum: 0xc4d0 [validation disabled]
[Header checksum status: Unverified]
Source: 192.168.1.180
Destination: 239.255.255.250
User Datagram Protocol, Src Port: 48540, Dst Port: 1900
Simple Service Discovery Protocol
No. Time Source Destination Protocol Length Info
3 0.325254 192.168.1.51 146.20.112.65 TCP 55 51333 → 443 [ACK] Seq=1 Ack=1 Win=258 Len=1 [TCP segment of a reassembled PDU]
Frame 3: 55 bytes on wire (440 bits), 55 bytes captured (440 bits) on interface 0
Ethernet II, Src: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1), Dst: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
Destination: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
Address: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Source: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
Address: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 192.168.1.51, Dst: 146.20.112.65
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 41
Identification: 0x69ac (27052)
Flags: 0x4000, Don't fragment
Time to live: 128
Protocol: TCP (6)
Header checksum: 0xccf1 [validation disabled]
[Header checksum status: Unverified]
Source: 192.168.1.51
Destination: 146.20.112.65
Transmission Control Protocol, Src Port: 51333, Dst Port: 443, Seq: 1, Ack: 1, Len: 1
No. Time Source Destination Protocol Length Info
4 0.340841 192.168.1.51 146.20.112.65 TCP 55 51349 → 443 [ACK] Seq=1 Ack=1 Win=255 Len=1 [TCP segment of a reassembled PDU]
Frame 4: 55 bytes on wire (440 bits), 55 bytes captured (440 bits) on interface 0
Ethernet II, Src: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1), Dst: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
Destination: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
Address: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Source: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
Address: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 192.168.1.51, Dst: 146.20.112.65
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 41
Identification: 0x69ad (27053)
Flags: 0x4000, Don't fragment
Time to live: 128
Protocol: TCP (6)
Header checksum: 0xccf0 [validation disabled]
[Header checksum status: Unverified]
Source: 192.168.1.51
Destination: 146.20.112.65
Transmission Control Protocol, Src Port: 51349, Dst Port: 443, Seq: 1, Ack: 1, Len: 1
No. Time Source Destination Protocol Length Info
5 0.359448 192.168.1.51 146.20.112.65 TCP 55 51335 → 443 [ACK] Seq=1 Ack=1 Win=253 Len=1 [TCP segment of a reassembled PDU]
Frame 5: 55 bytes on wire (440 bits), 55 bytes captured (440 bits) on interface 0
Ethernet II, Src: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1), Dst: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
Destination: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
Address: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Source: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
Address: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 192.168.1.51, Dst: 146.20.112.65
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 41
Identification: 0x69ae (27054)
Flags: 0x4000, Don't fragment
Time to live: 128
Protocol: TCP (6)
Header checksum: 0xccef [validation disabled]
[Header checksum status: Unverified]
Source: 192.168.1.51
Destination: 146.20.112.65
Transmission Control Protocol, Src Port: 51335, Dst Port: 443, Seq: 1, Ack: 1, Len: 1
No. Time Source Destination Protocol Length Info
6 0.406275 146.20.112.65 192.168.1.51 TCP 66 443 → 51333 [ACK] Seq=1 Ack=2 Win=356 Len=0 SLE=1 SRE=2
Frame 6: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface 0
Ethernet II, Src: BelkinIn_36:7a:8d (14:91:82:36:7a:8d), Dst: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
Destination: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
Address: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Source: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
Address: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 146.20.112.65, Dst: 192.168.1.51
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 52
Identification: 0x6292 (25234)
Flags: 0x4000, Don't fragment
Time to live: 251
Protocol: TCP (6)
Header checksum: 0x5900 [validation disabled]
[Header checksum status: Unverified]
Source: 146.20.112.65
Destination: 192.168.1.51
Transmission Control Protocol, Src Port: 443, Dst Port: 51333, Seq: 1, Ack: 2, Len: 0
No. Time Source Destination Protocol Length Info
7 0.416052 146.20.112.65 192.168.1.51 TCP 66 443 → 51349 [ACK] Seq=1 Ack=2 Win=356 Len=0 SLE=1 SRE=2
Frame 7: 66 bytes on wire (528 bits), 66 bytes captured (528 bits) on interface 0
Ethernet II, Src: BelkinIn_36:7a:8d (14:91:82:36:7a:8d), Dst: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
Destination: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
Address: IntelCor_3e:ca:a1 (cc:2f:71:3e:ca:a1)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Source: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
Address: BelkinIn_36:7a:8d (14:91:82:36:7a:8d)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 146.20.112.65, Dst: 192.168.1.51
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 52
Identification: 0xa1f5 (41461)
Flags: 0x4000, Don't fragment
Time to live: 251
Protocol: TCP (6)
Header checksum: 0x199d [validation disabled]
[Header checksum status: Unverified]
Source: 146.20.112.65
Destination: 192.168.1.51
Transmission Control Protocol, Src Port: 443, Dst Port: 51349, Seq: 1, Ack: 2, Len: 0
No. Time Source Destination Protocol Length Info
8 0.433884 146.20.112.65 192.168.1.51 TCP 66 443 → 51335 [ACK] Seq=1 Ack=2 Win=356 Len=0 SLE=1 SRE=2
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