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Merge pull request #255 from zeronounours/profinet_rtc
Add PROFINET IO real-time layer
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| # This file is part of Scapy | ||
| # Scapy is free software: you can redistribute it and/or modify | ||
| # it under the terms of the GNU General Public License as published by | ||
| # the Free Software Foundation, either version 2 of the License, or | ||
| # any later version. | ||
| # | ||
| # Scapy is distributed in the hope that it will be useful, | ||
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| # GNU General Public License for more details. | ||
| # | ||
| # You should have received a copy of the GNU General Public License | ||
| # along with Scapy. If not, see <http://www.gnu.org/licenses/>. | ||
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| # Copyright (C) 2016 Gauthier Sebaux | ||
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| # scapy.contrib.description = ProfinetIO base layer | ||
| # scapy.contrib.status = loads | ||
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| """ | ||
| A simple and non exhaustive Profinet IO layer for scapy | ||
| """ | ||
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| # Scapy imports | ||
| from scapy.all import Packet, bind_layers, Ether, UDP | ||
| from scapy.fields import XShortEnumField | ||
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| # Some constants | ||
| PNIO_FRAME_IDS = { | ||
| 0x0020:"PTCP-RTSyncPDU-followup", | ||
| 0x0080:"PTCP-RTSyncPDU", | ||
| 0xFC01:"Alarm High", | ||
| 0xFE01:"Alarm Low", | ||
| 0xFEFC:"DCP-Hello-Req", | ||
| 0xFEFD:"DCP-Get-Set", | ||
| 0xFEFE:"DCP-Identify-ReqPDU", | ||
| 0xFEFF:"DCP-Identify-ResPDU", | ||
| 0xFF00:"PTCP-AnnouncePDU", | ||
| 0xFF20:"PTCP-FollowUpPDU", | ||
| 0xFF40:"PTCP-DelayReqPDU", | ||
| 0xFF41:"PTCP-DelayResPDU-followup", | ||
| 0xFF42:"PTCP-DelayFuResPDU", | ||
| 0xFF43:"PTCP-DelayResPDU", | ||
| } | ||
| for i in xrange(0x0100, 0x1000): | ||
| PNIO_FRAME_IDS[i] = "RT_CLASS_3" | ||
| for i in xrange(0x8000, 0xC000): | ||
| PNIO_FRAME_IDS[i] = "RT_CLASS_1" | ||
| for i in xrange(0xC000, 0xFC00): | ||
| PNIO_FRAME_IDS[i] = "RT_CLASS_UDP" | ||
| for i in xrange(0xFF80, 0xFF90): | ||
| PNIO_FRAME_IDS[i] = "FragmentationFrameID" | ||
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| ################# | ||
| ## PROFINET IO ## | ||
| ################# | ||
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| class ProfinetIO(Packet): | ||
| """Basic PROFINET IO dispatcher""" | ||
| fields_desc = [XShortEnumField("frameID", 0, PNIO_FRAME_IDS)] | ||
| overload_fields = { | ||
| Ether: {"type": 0x8892}, | ||
| UDP: {"dport": 0x8892}, | ||
| } | ||
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| def guess_payload_class(self, payload): | ||
| # For frameID in the RT_CLASS_* range, use the RTC packet as payload | ||
| if (self.frameID >= 0x0100 and self.frameID < 0x1000) or \ | ||
| (self.frameID >= 0x8000 and self.frameID < 0xFC00): | ||
| from scapy.contrib.pnio_rtc import PNIORealTime | ||
| return PNIORealTime | ||
| else: | ||
| return Packet.guess_payload_class(self, payload) | ||
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| bind_layers(Ether, ProfinetIO, type=0x8892) | ||
| bind_layers(UDP, ProfinetIO, dport=0x8892) | ||
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| % ProfinetIO layer test campaign | ||
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| + Syntax check | ||
| = Import the ProfinetIO layer | ||
| from scapy.contrib.pnio import * | ||
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| + Check DCE/RPC layer | ||
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| = ProfinetIO default values | ||
| str(ProfinetIO()) == '\x00\x00' | ||
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| = ProfinetIO overloads Ethertype | ||
| p = Ether() / ProfinetIO() | ||
| p.type == 0x8892 | ||
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| = ProfinetIO overloads UDP dport | ||
| p = UDP() / ProfinetIO() | ||
| p.dport == 0x8892 | ||
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| = Ether guesses ProfinetIO as payload class | ||
| p = Ether('ffffffffffff00000000000088920102'.decode('hex')) | ||
| p.payload.__class__ == ProfinetIO and p.frameID == 0x0102 | ||
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| = UDP guesses ProfinetIO as payload class | ||
| p = UDP('12348892000a00000102'.decode('hex')) | ||
| p.payload.__class__ == ProfinetIO and p.frameID == 0x0102 | ||
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| = ProfinetIO guess payload to PNIORealTime | ||
| p = UDP('12348892000c000080020102'.decode('hex')) | ||
| p.payload.payload.__class__.__name__ == 'PNIORealTime' and p.frameID == 0x8002 | ||
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