# test import pcap import time MAC_BROADCAST = [0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ] MAC_LAPTOP = [0xdc, 0x0e, 0xa1, 0x11, 0x67, 0x08 ] MAC_RANDOM = [0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff ] MAC_ALPI = [0x0A, 0x19, 0x4A, 0x39, 0xD6, 0x98 ] # alpitronics MAC_TPLINK_E4 = [0x98, 0x48, 0x27, 0x5A, 0x3C, 0xE4 ] # TPlink PLC adaptor MAC_TPLINK_E6 = [0x98, 0x48, 0x27, 0x5A, 0x3C, 0xE6 ] # TPlink PLC adaptor MAC_DEVOLO_26 = [0xBC, 0xF2, 0xAF, 0x0B, 0x8E, 0x26 ] # Devolo PLC adaptor MAC_IPv6MCAST1 = [0x33, 0x33, 0x00, 0x00, 0x00, 0x01 ] # IPv6 multicast MAC MAC_RANDCAR = [0x04, 0x65, 0x65, 0x00, 0xaf, 0xfe ] # random hyundai car class tester(): def cleanTransmitBuffer(self): # fill the complete ethernet transmit buffer with 0x00 for i in range(0, len(self.mytransmitbuffer)): self.mytransmitbuffer[i]=0 def fillSourceMac(self, mac, offset=6): # at offset 6 in the ethernet frame, we have the source MAC # we can give a different offset, to re-use the MAC also in the data area for i in range(0, 6): self.mytransmitbuffer[offset+i]=mac[i] def fillDestinationMac(self, mac, offset=0): # at offset 0 in the ethernet frame, we have the destination MAC # we can give a different offset, to re-use the MAC also in the data area for i in range(0, 6): self.mytransmitbuffer[offset+i]=mac[i] def sendTestFrame1(self): self.mytransmitbuffer = bytearray(72) self.cleanTransmitBuffer() # Destination MAC self.fillDestinationMac(MAC_IPv6MCAST1) # Source MAC self.fillSourceMac(MAC_RANDCAR) # Protocol self.mytransmitbuffer[12]=0x86 # IPv6 self.mytransmitbuffer[13]=0xdd self.mytransmitbuffer[14]=0x60 # self.mytransmitbuffer[15]=0x00 # self.mytransmitbuffer[16]=0x00 # self.mytransmitbuffer[17]=0x00 # self.mytransmitbuffer[18]=0x00 # len 2 bytes self.mytransmitbuffer[19]=0x12 # self.mytransmitbuffer[20]=0x11 # next is UDP self.mytransmitbuffer[21]=0x0A # hop limit self.mytransmitbuffer[22]=0xfe # 22 to 37 ip source address self.mytransmitbuffer[23]=0x80 # 22 to 37 ip source address self.mytransmitbuffer[24]=0x00 # 22 to 37 ip source address self.mytransmitbuffer[25]=0x00 # 22 to 37 ip source address self.mytransmitbuffer[26]=0x00 # 22 to 37 ip source address self.mytransmitbuffer[27]=0x00 # 22 to 37 ip source address self.mytransmitbuffer[28]=0x00 # 22 to 37 ip source address self.mytransmitbuffer[29]=0x00 # 22 to 37 ip source address self.mytransmitbuffer[30]=0x06 # 22 to 37 ip source address self.mytransmitbuffer[31]=0x65 # 22 to 37 ip source address self.mytransmitbuffer[32]=0x65 # 22 to 37 ip source address self.mytransmitbuffer[33]=0xff # 22 to 37 ip source address self.mytransmitbuffer[34]=0xfe # 22 to 37 ip source address self.mytransmitbuffer[35]=0x00 # 22 to 37 ip source address self.mytransmitbuffer[36]=0x64 # 22 to 37 ip source address self.mytransmitbuffer[37]=0xc3 # 22 to 37 ip source address self.mytransmitbuffer[38]=0xff # 38 to 53 ip destination address self.mytransmitbuffer[39]=0x02 # 38 to 53 ip destination address self.mytransmitbuffer[53]=0x01 # 38 to 53 ip destination address self.mytransmitbuffer[54]=0xcc # source port self.mytransmitbuffer[55]=0xab self.mytransmitbuffer[56]=0x3b # dest port self.mytransmitbuffer[57]=0x0e self.mytransmitbuffer[58]=0x00 # length self.mytransmitbuffer[59]=0x12 self.mytransmitbuffer[60]= 0x89 # checksum self.mytransmitbuffer[61]= 0x62 self.mytransmitbuffer[62]= 0x01 self.mytransmitbuffer[63]= 0xFE self.mytransmitbuffer[64]= 0x90 self.mytransmitbuffer[65]= 0x00 self.mytransmitbuffer[66]= 0x00 self.mytransmitbuffer[67]= 0x00 self.mytransmitbuffer[68]= 0x00 self.mytransmitbuffer[69]= 0x02 self.mytransmitbuffer[70]= 0x10 self.mytransmitbuffer[71]= 0x00 self.sniffer.sendpacket(bytes(self.mytransmitbuffer)) print("transmitted test frame 1") def findEthernetAdaptor(self): self.strInterfaceName="eth0" # default, if the real is not found print("Interfaces:\n" + '\n'.join(pcap.findalldevs())) for i in range(0, 10): strInterfaceName = pcap.ex_name("eth"+str(i)) if (strInterfaceName == '\\Device\\NPF_{E4B8176C-8516-4D48-88BC-85225ABCF259}'): print("This is the wanted Ethernet adaptor.") self.strInterfaceName="eth"+str(i) print("eth"+ str(i) + " is " + strInterfaceName) def __init__(self): self.mytransmitbuffer = bytearray("Hallo das ist ein Test", 'UTF-8') self.nPacketsReceived = 0 #self.sniffer = pcap.pcap(name=None, promisc=True, immediate=True, timeout_ms=50) # eth3 means: Third entry from back, in the list of interfaces, which is provided by pcap.findalldevs. # Improvement necessary: select the interface based on the name. # For debugging of the interface names, we can patch the file # C:\Users\uwemi\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\pcap\_pcap_ex.py, # in the function # def name(name: bytes) -> bytes: # in the place after # if i == idx: # print("index match at " + str(i) + " dev name=" + str(dev.name) + " dev.description=" + str(dev.description)) # This will print the description of the used interface. # # Patch for non-blocking read-iteration: # in _pcap.py, function def __next__(self), in the case of timeout (if n==0), we need to "raise StopIteration" instead of "continue". # self.findEthernetAdaptor() self.sniffer = pcap.pcap(name=self.strInterfaceName, promisc=True, immediate=True, timeout_ms=50) self.sniffer.setnonblock(True) print("sniffer created at " + self.strInterfaceName) def mainfunction(self): # print("will evaluate self.sniffer") for ts, pkt in self.sniffer: # attention: for using this in non-blocking manner, we need the patch described above. self.nPacketsReceived+=1 # print('%d' % (ts)) # the time stamp def close(self): self.sniffer.close() t=tester() print(256 ** 2) for i in range(0, 100): t.sendTestFrame1() time.sleep(0.5) t.close()