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PcapLogger.onOpen()   A
last analyzed

↳ Parent: PcapLogger

Complexity

Conditions 1

Size

Total Lines 13

Duplication

Lines 0
Ratio 0 %

Importance

Changes 3
Bugs 1 Features 0
Metric Value
cc 1
c 3
b 1
f 0
dl 0
loc 13
rs 9.4285
1 
from struct import Struct
2 
import time
3 
import math
4 

            


            
                                                                                                            
                            
            
                                    
            
            

                
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from libAnt.loggers.logger import Logger

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class PcapLogger(Logger):

            


            
                                                                        
                            
            
                                    
            
            

                
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    def onOpen(self):

            


            
                                                                        
                            
            
                                    
            
            

                
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        # write pcap global header

            


            
                                                                        
                            
            
                                    
            
            

                
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        magic_number = b'\xD4\xC3\xB2\xA1'

            


            
                                                                        
                            
            
                                    
            
            

                
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        version_major = 2

            


            
                                                                        
                            
            
                                    
            
            

                
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        version_minor = 4

            


            
                                                                        
                            
            
                                    
            
            

                
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        thiszone = b'\x00\x00\x00\x00'

            


            
                                                                        
                            
            
                                    
            
            

                
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        sigfigs = b'\x00\x00\x00\x00'

            


            
                                                                        
                            
            
                                    
            
            

                
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        snaplen = b'\xFF\x00\x00\x00'

            


            
                                                                        
                            
            
                                    
            
            

                
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        network = b'\x01\x00\x00\x00'

            


            
                                                                        
                            
            
                                    
            
            

                
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        pcap_global_header = Struct('<4shh4s4s4s4s')

            


            
                                                                        
                            
            
                                    
            
            

                
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        self._log.write(

            


            
                                                                        
                            
            
                                    
            
            

                
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            pcap_global_header.pack(magic_number, version_major, version_minor, thiszone, sigfigs,

            


            
                                                                        
                            
            
                                    
            
            

                
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                                    snaplen, network))

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    def encodeData(self, data):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        timestamp = time.time()

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        frac, whole = math.modf(timestamp)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        ts_sec = int(whole).to_bytes(4, byteorder='little')

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        ts_usec = int(frac * 1000 * 1000).to_bytes(4, byteorder='little')

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        incl_len = len(data)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        orig_len = incl_len

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        pcap_packet_header = Struct('<4s4sll').pack(ts_sec, ts_usec, incl_len, orig_len)

            


            
                                                        
            
                                    
            
            

                
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        return pcap_packet_header + data