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setkey and getkey are working
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uhi22
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5021309a72
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c51a5b6691
BIN
PLC_on_Windows_and_raspberry.docx
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BIN
PLC_on_Windows_and_raspberry.docx
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Binary file not shown.
335
pyPlcHomeplug.py
335
pyPlcHomeplug.py
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@ -7,6 +7,26 @@
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# - Sniffing of the SLAC-request ok
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# - Transmission of a demo message ok
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#
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# Test results 2022-10-15
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# 1. GET_SW.REQ broadcast is answered by both TPlinks, while the first is connected to eth, the other via PLC at the first.
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# 2. Step 1 works also, if we use a different MAC address than the original laptop ethernet MAC.
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# 3. CM_SET_KEY addressed to the correct destination works, with the following results:
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# - there were cases, when the TPlink responded "negative", but with a "valid" none (each time it used a new mynonce, and correctly
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# reflected our mynonce.
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# - but also there is "positive" response, also with correct nonces.
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# - also the Devolo reponds positive and with correct nonces.
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# - not yet checked, whether the NMK is really set
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# 4. CM_GET_KEY with wrong NID is refused by the devolo. But at least it delivers the NID (e.g. d57c1fe9544e01), and if we use this NID in the next
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# request, it responds with KEY_GRANTED, Keytype=NMK, and a key 7f19ba0261892d59b7ea42aed875d2320000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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# This key delivers exactly the NMK, which we have set in the CM_SET_KEY.
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# But: There are some pitfalls:
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# The CM_SET_KEY responds in some cases (wrong request) positive, but does not apply the NMK.
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# If the CM_SET_KEY is well-formatted, including the correct NID, we get a false-negative response, and
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# we see the LEDs on the adaptor shortly going completely off, completely on, and back to normal state. This
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# is the sign, that the new key was accepted. It means, the
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# adaptor is making a reset, to apply the new key.
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# 5. CM_SET_KEY and CM_GET_KEY works also when sent to broadcast address.
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import pcap
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def twoCharHex(b):
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@ -20,7 +40,49 @@ def showAsHex(mybytearray):
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strHex = strHex + twoCharHex(mybytearray[i]) + " "
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print("len " + str(packetlength) + " data " + strHex)
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MAC_BROADCAST = [0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF ]
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MAC_LAPTOP = [0xdc, 0x0e, 0xa1, 0x11, 0x67, 0x08 ]
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MAC_RANDOM = [0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff ]
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MAC_IONIQ = [0x04, 0x65, 0x65, 0x00, 0x64, 0xC3 ]
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MAC_ALPI = [0x0A, 0x19, 0x4A, 0x39, 0xD6, 0x98 ] # alpitronics
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MAC_TPLINK_E4 = [0x98, 0x48, 0x27, 0x5A, 0x3C, 0xE4 ] # TPlink PLC adaptor
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MAC_TPLINK_E6 = [0x98, 0x48, 0x27, 0x5A, 0x3C, 0xE6 ] # TPlink PLC adaptor
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MAC_DEVOLO_26 = [0xBC, 0xF2, 0xAF, 0x0B, 0x8E, 0x26 ] # Devolo PLC adaptor
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CM_SET_KEY = 0x6008
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CM_GET_KEY = 0x600C
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CM_SC_JOIN = 0x6010
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CM_CHAN_EST = 0x6014
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CM_TM_UPDATE = 0x6018
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CM_AMP_MAP = 0x601C
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CM_BRG_INFO = 0x6020
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CM_CONN_NEW = 0x6024
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CM_CONN_REL = 0x6028
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CM_CONN_MOD = 0x602C
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CM_CONN_INFO = 0x6030
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CM_STA_CAP = 0x6034
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CM_NW_INFO = 0x6038
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CM_GET_BEACON = 0x603C
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CM_HFID = 0x6040
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CM_MME_ERROR = 0x6044
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CM_NW_STATS = 0x6048
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CM_SLAC_PARAM = 0x6064
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CM_START_ATTEN_CHAR = 0x6068
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CM_ATTEN_CHAR = 0x606C
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CM_PKCS_CERT = 0x6070
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CM_MNBC_SOUND = 0x6074
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CM_VALIDATE = 0x6078
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CM_SLAC_MATCH = 0x607C
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CM_SLAC_USER_DATA = 0x6080
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CM_ATTEN_PROFILE = 0x6084
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MMTYPE_REQ = 0x0000
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MMTYPE_CNF = 0x0001
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MMTYPE_IND = 0x0002
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MMTYPE_RSP = 0x0003
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class pyPlcHomeplug():
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def showIpAddresses(self, mybytearray):
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addr = lambda pkt, offset: '.'.join(str(pkt[i]) for i in range(offset, offset + 4))
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@ -50,25 +112,151 @@ class pyPlcHomeplug():
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blIsHomePlug=True
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print("HomePlug protocol")
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return blIsHomePlug
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def fillSourceMac(self, mac):
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self.mytransmitbuffer[6]=mac[0]
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self.mytransmitbuffer[7]=mac[1]
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self.mytransmitbuffer[8]=mac[2]
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self.mytransmitbuffer[9]=mac[3]
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self.mytransmitbuffer[10]=mac[4]
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self.mytransmitbuffer[11]=mac[5]
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def fillDestinationMac(self, mac):
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self.mytransmitbuffer[0]=mac[0]
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self.mytransmitbuffer[1]=mac[1]
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self.mytransmitbuffer[2]=mac[2]
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self.mytransmitbuffer[3]=mac[3]
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self.mytransmitbuffer[4]=mac[4]
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self.mytransmitbuffer[5]=mac[5]
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def cleanTransmitBuffer(self):
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for i in range(0, len(self.mytransmitbuffer)):
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self.mytransmitbuffer[i]=0
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def setNwkAt(self, index):
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# sets the Network Key (NMK) at a certain position in the transmit buffer
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for i in range(0, 16):
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self.mytransmitbuffer[index+i]=self.NWK[i] # NWK
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def setNidAt(self, index):
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# (b0f2e695666b03 was NID of TPlink)
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# copies the network ID (NID) into the wished position in the transmit buffer
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for i in range(0, 7):
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self.mytransmitbuffer[index+i]=self.NID[i]
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def getManagementMessageType(self):
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# calculates the MMTYPE (base value + lower two bits), see Table 11-2 of homeplug spec
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return (self.myreceivebuffer[16]<<8) + self.myreceivebuffer[15]
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def composeTestFrameGetSwReq(self):
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# GET_SW.REQ request, as used by the win10 laptop
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self.mytransmitbuffer = bytearray(60)
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self.cleanTransmitBuffer()
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# Destination MAC
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self.fillDestinationMac(MAC_BROADCAST)
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# Source MAC
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self.fillSourceMac(MAC_RANDOM)
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# Protocol
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self.mytransmitbuffer[12]=0x88 # Protocol HomeplugAV
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self.mytransmitbuffer[13]=0xE1
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self.mytransmitbuffer[14]=0x00 # version
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self.mytransmitbuffer[15]=0x00 # GET_SW.REQ
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self.mytransmitbuffer[16]=0xA0 #
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self.mytransmitbuffer[17]=0x00 # Vendor OUI
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self.mytransmitbuffer[18]=0xB0 #
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self.mytransmitbuffer[19]=0x52 #
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def composeTestFrameSetKey(self, variation=0):
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# CM_SET_KEY.REQ request
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# From example trace from catphish https://openinverter.org/forum/viewtopic.php?p=40558&sid=9c23d8c3842e95c4cf42173996803241#p40558
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# Table 11-88 in the homeplug_av21_specification_final_public.pdf
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self.mytransmitbuffer = bytearray(60)
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self.cleanTransmitBuffer()
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# Destination MAC
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#self.fillDestinationMac(MAC_DEVOLO_26)
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#self.fillDestinationMac(MAC_TPLINK_E4)
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self.fillDestinationMac(MAC_BROADCAST)
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# Source MAC
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#self.fillSourceMac(MAC_LAPTOP)
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self.fillSourceMac(MAC_RANDOM)
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# Protocol
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self.mytransmitbuffer[12]=0x88 # Protocol HomeplugAV
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self.mytransmitbuffer[13]=0xE1
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self.mytransmitbuffer[14]=0x01 # version
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self.mytransmitbuffer[15]=0x08 # CM_SET_KEY.REQ
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self.mytransmitbuffer[16]=0x60 #
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self.mytransmitbuffer[17]=0x00 # frag_index
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self.mytransmitbuffer[18]=0x00 # frag_seqnum
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self.mytransmitbuffer[19]=0x01 # 0 key info type
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self.mytransmitbuffer[20]=0xaa # 1 my nonce
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self.mytransmitbuffer[21]=0xaa # 2
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self.mytransmitbuffer[22]=0xaa # 3
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self.mytransmitbuffer[23]=0xaa # 4
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self.mytransmitbuffer[24]=0x00 # 5 your nonce
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self.mytransmitbuffer[25]=0x00 # 6
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self.mytransmitbuffer[26]=0x00 # 7
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self.mytransmitbuffer[27]=0x00 # 8
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self.mytransmitbuffer[28]=0x04 # 9 nw info pid
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self.mytransmitbuffer[29]=0x00 # 10 info prn
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self.mytransmitbuffer[30]=0x00 # 11
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self.mytransmitbuffer[31]=0x00 # 12 pmn
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self.mytransmitbuffer[32]=0x00 # 13 cco cap
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#self.setNidAt(33) # 14-20 nid 7 bytes from 33 to 39
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self.mytransmitbuffer[40]=0x01 # 21 peks (payload encryption key select) Table 11-83. 01 is NMK. We had 02 here, why???
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# with 0x0F we could choose "no key, payload is sent in the clear"
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self.setNwkAt(41)
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self.mytransmitbuffer[41]+=variation # to try different NMKs
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# and three remaining zeros
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def composeTestFrameGetKey(self):
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# CM_GET_KEY.REQ request
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# from https://github.com/uhi22/plctool2/blob/master/listen_to_eth.c
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# and homeplug_av21_specification_final_public.pdf
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self.mytransmitbuffer = bytearray(60)
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self.cleanTransmitBuffer()
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# Destination MAC
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#self.fillDestinationMac(MAC_DEVOLO_26)
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#self.fillDestinationMac(MAC_TPLINK_E4)
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self.fillDestinationMac(MAC_BROADCAST)
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# Source MAC
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#self.fillSourceMac(MAC_LAPTOP)
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self.fillSourceMac(MAC_RANDOM)
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# Protocol
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self.mytransmitbuffer[12]=0x88 # Protocol HomeplugAV
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self.mytransmitbuffer[13]=0xE1
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self.mytransmitbuffer[14]=0x01 # version
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self.mytransmitbuffer[15]=0x0C # CM_GET_KEY.REQ https://github.com/uhi22/plctool2/blob/master/plc_homeplug.h
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self.mytransmitbuffer[16]=0x60 #
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self.mytransmitbuffer[17]=0x00 # 2 bytes fragmentation information. 0000 means: unfragmented.
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self.mytransmitbuffer[18]=0x00 #
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self.mytransmitbuffer[19]=0x00 # 0 Request Type 0=direct
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self.mytransmitbuffer[20]=0x01 # 1 RequestedKeyType only "NMK" is permitted over the H1 interface.
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# value see HomeplugAV2.1 spec table 11-89. 1 means AES-128.
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self.setNidAt(21)# NID starts here (table 11-91 Homeplug spec is wrong. Verified by accepted command.)
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self.mytransmitbuffer[28]=0xaa # 10-13 mynonce. The position at 28 is verified by the response of the devolo.
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self.mytransmitbuffer[29]=0xaa #
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self.mytransmitbuffer[30]=0xaa #
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self.mytransmitbuffer[31]=0xaa #
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self.mytransmitbuffer[32]=0x04 # 14 PID. According to ISO15118-3 fix value 4, "HLE protocol"
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self.mytransmitbuffer[33]=0x00 # 15-16 PRN Protocol run number
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self.mytransmitbuffer[34]=0x00 #
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self.mytransmitbuffer[35]=0x00 # 17 PMN Protocol message number
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def composeTestFrameSlacReq(self):
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# SLAC request, as it was recorded 2021-12-17 WP charger 2
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self.mytransmitbuffer = bytearray(60)
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self.cleanTransmitBuffer()
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# Destination MAC
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self.mytransmitbuffer[0]=0xFF
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self.mytransmitbuffer[1]=0xFF
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self.mytransmitbuffer[2]=0xFF
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self.mytransmitbuffer[3]=0xFF
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self.mytransmitbuffer[4]=0xFF
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self.mytransmitbuffer[5]=0xFF
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self.fillDestinationMac(MAC_BROADCAST)
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# Source MAC
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self.mytransmitbuffer[6]=0x04 # Ioniq MAC
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self.mytransmitbuffer[7]=0x65
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self.mytransmitbuffer[8]=0x65
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self.mytransmitbuffer[9]=0x00
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self.mytransmitbuffer[10]=0x64
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self.mytransmitbuffer[11]=0xC3
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self.fillSourceMac(MAC_IONIQ)
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# Protocol
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self.mytransmitbuffer[12]=0x88 # Protocol HomeplugAV
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@ -122,24 +310,15 @@ class pyPlcHomeplug():
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self.mytransmitbuffer[57]=0x00 #
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self.mytransmitbuffer[58]=0x00 #
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self.mytransmitbuffer[59]=0x00 #
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def composeTestFrameSlacResp(self):
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self.mytransmitbuffer = bytearray(60)
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self.cleanTransmitBuffer()
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# Destination MAC
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self.mytransmitbuffer[0]=0x04 # Ioniq MAC
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self.mytransmitbuffer[1]=0x65
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self.mytransmitbuffer[2]=0x65
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self.mytransmitbuffer[3]=0x00
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self.mytransmitbuffer[4]=0x64
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self.mytransmitbuffer[5]=0xC3
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self.fillDestinationMac(MAC_IONIQ)
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# Source MAC
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self.mytransmitbuffer[6]=0x0A # Alpi MAC
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self.mytransmitbuffer[7]=0x19
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self.mytransmitbuffer[8]=0x4A
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self.mytransmitbuffer[9]=0x39
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self.mytransmitbuffer[10]=0xD6
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self.mytransmitbuffer[11]=0x98
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self.fillSourceMac(MAC_ALPI)
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# Protocol
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self.mytransmitbuffer[12]=0x88 # Protocol HomeplugAV
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@ -195,10 +374,93 @@ class pyPlcHomeplug():
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self.mytransmitbuffer[58]=0x0 #
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self.mytransmitbuffer[59]=0x0 #
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def sendTestFrame(self):
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self.addToTrace("transmitting test frame...")
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self.composeTestFrameSlacReq()
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self.sniffer.sendpacket(bytes(self.mytransmitbuffer))
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def composeTestFrameDHCP(self):
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# DHCP discover, to check whether this "normal" package arrives on the other side
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self.mytransmitbuffer = bytearray(379)
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self.cleanTransmitBuffer()
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# Destination MAC
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self.fillDestinationMac(MAC_BROADCAST)
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# Source MAC
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self.fillSourceMac(MAC_LAPTOP)
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self.mytransmitbuffer[12]=0x08 # Protocol IPv4
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self.mytransmitbuffer[13]=0x00
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self.mytransmitbuffer[14]=0x45 # header len
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self.mytransmitbuffer[15]=0x00 #
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self.mytransmitbuffer[16]=0x01 #
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self.mytransmitbuffer[17]=0x6D #
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self.mytransmitbuffer[18]=0x9B #
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self.mytransmitbuffer[19]=0x30 #
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self.mytransmitbuffer[20]=0x00 #
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self.mytransmitbuffer[21]=0x00 #
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self.mytransmitbuffer[22]=0x40 #
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self.mytransmitbuffer[23]=0x11 #
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self.mytransmitbuffer[24]=0xde #
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self.mytransmitbuffer[25]=0x50 #
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self.mytransmitbuffer[26]=0x00 #
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self.mytransmitbuffer[27]=0x00 #
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self.mytransmitbuffer[28]=0x00 #
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self.mytransmitbuffer[29]=0x00 #
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self.mytransmitbuffer[30]=0xFF #
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self.mytransmitbuffer[31]=0xFF #
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self.mytransmitbuffer[32]=0xFF #
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self.mytransmitbuffer[33]=0xFF #
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self.mytransmitbuffer[34]=0x00 #
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self.mytransmitbuffer[35]=0x44 #
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self.mytransmitbuffer[36]=0x00 #
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self.mytransmitbuffer[37]=0x43 #
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def sendTestFrame(self, selection):
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if (selection=="1"):
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self.composeTestFrameSlacReq()
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self.addToTrace("transmitting TestFrame SlacReq...")
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self.sniffer.sendpacket(bytes(self.mytransmitbuffer))
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if (selection=="2"):
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self.composeTestFrameSlacResp()
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self.addToTrace("transmitting TestFrame SlacResp...")
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self.sniffer.sendpacket(bytes(self.mytransmitbuffer))
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if (selection=="S"):
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self.composeTestFrameGetSwReq()
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self.addToTrace("transmitting TestFrame GetSwReq...")
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self.sniffer.sendpacket(bytes(self.mytransmitbuffer))
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if (selection=="s"):
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self.composeTestFrameSetKey(1)
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self.addToTrace("transmitting TestFrame SET_KEY.REQ (key 1)")
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self.sniffer.sendpacket(bytes(self.mytransmitbuffer))
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if (selection=="t"):
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self.composeTestFrameSetKey(2)
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self.addToTrace("transmitting TestFrame SET_KEY.REQ (key 2)")
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self.sniffer.sendpacket(bytes(self.mytransmitbuffer))
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if (selection=="D"):
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self.composeTestFrameDHCP()
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self.addToTrace("transmitting TestFrame broken DHCP")
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self.sniffer.sendpacket(bytes(self.mytransmitbuffer))
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if (selection=="G"):
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self.composeTestFrameGetKey()
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self.addToTrace("transmitting TestFrame GET_KEY")
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self.sniffer.sendpacket(bytes(self.mytransmitbuffer))
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def evaluateGetKeyCnf(self):
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# The getkey response contains the Network ID (NID), even if the request was rejected. We store the NID,
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# to have it available for the next request.
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s = ""
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for i in range(0, 7):
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self.NID[i] = self.myreceivebuffer[29+i]
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s=s+hex(self.NID[i])+ " "
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print("From GetKeyCnf, got network ID (NID) " + s)
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def evaluateReceivedHomeplugPacket(self):
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mmt = self.getManagementMessageType()
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print(hex(mmt))
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if (mmt == CM_GET_KEY + MMTYPE_CNF):
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self.evaluateGetKeyCnf()
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#if (pkt[15]==0x64): #SLAC_Request
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def findEthernetAdaptor(self):
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self.strInterfaceName="eth0" # default, if the real is not found
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@ -233,6 +495,9 @@ class pyPlcHomeplug():
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self.findEthernetAdaptor()
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self.sniffer = pcap.pcap(name=self.strInterfaceName, promisc=True, immediate=True, timeout_ms=50)
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self.sniffer.setnonblock(True)
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self.NWK = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 ] # a default network key
|
||||
self.NID = [ 1, 2, 3, 4, 5, 6, 7 ] # a default network ID
|
||||
self.runningCounter=0
|
||||
print("sniffer created at " + self.strInterfaceName)
|
||||
|
||||
def addToTrace(self, s):
|
||||
|
|
@ -246,14 +511,10 @@ class pyPlcHomeplug():
|
|||
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))
|
||||
#if (self.isHomeplug(pkt)):
|
||||
# self.showMacAddresses(pkt)
|
||||
# showAsHex(pkt)
|
||||
# if (pkt[15]==0x64): #SLAC_Request
|
||||
# self.sendTestFrame()
|
||||
#
|
||||
#else:
|
||||
# addToTrace("(other)")
|
||||
if (self.isHomeplug(pkt)):
|
||||
self.myreceivebuffer = pkt
|
||||
# self.showMacAddresses(pkt)
|
||||
self.evaluateReceivedHomeplugPacket()
|
||||
self.showStatus("nPacketsReceived=" + str(self.nPacketsReceived))
|
||||
|
||||
def close(self):
|
||||
|
|
|
|||
|
|
@ -9,7 +9,6 @@ import pyPlcHomeplug
|
|||
class pyPlcWorker():
|
||||
def __init__(self, callbackAddToTrace=None, callbackShowStatus=None):
|
||||
print("initializing pyPlcWorker")
|
||||
self.something = "Hallo das ist ein Test"
|
||||
self.nMainFunctionCalls=0
|
||||
self.strUserAction = ""
|
||||
self.callbackAddToTrace = callbackAddToTrace
|
||||
|
|
@ -30,7 +29,5 @@ class pyPlcWorker():
|
|||
def handleUserAction(self, strAction):
|
||||
self.strUserAction = strAction
|
||||
self.addToTrace("UserAction " + strAction)
|
||||
if (strAction == "t"):
|
||||
self.addToTrace("sending test frame")
|
||||
self.hp.sendTestFrame()
|
||||
self.hp.sendTestFrame(strAction)
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue