WIP security commit.
This commit is contained in:
Jonathan Naylor
parent
9105407836
commit
88b12104d3
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@ -214,6 +214,7 @@
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<ClInclude Include="RS129.h" />
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<ClInclude Include="RS241213.h" />
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<ClInclude Include="RSSIInterpolator.h" />
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<ClInclude Include="NXDNSACCH.h" />
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<ClInclude Include="SerialController.h" />
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<ClInclude Include="SerialPort.h" />
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<ClInclude Include="SHA256.h" />
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@ -278,6 +279,7 @@
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<ClCompile Include="NXDNLICH.cpp" />
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<ClCompile Include="NXDNLookup.cpp" />
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<ClCompile Include="NXDNNetwork.cpp" />
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<ClCompile Include="NXDNSACCH.cpp" />
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<ClCompile Include="P25Audio.cpp" />
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<ClCompile Include="P25Control.cpp" />
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<ClCompile Include="P25Data.cpp" />
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@ -251,6 +251,9 @@
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<ClInclude Include="NXDNLookup.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="NXDNSACCH.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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</ItemGroup>
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<ItemGroup>
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<ClCompile Include="BPTC19696.cpp">
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@ -469,5 +472,8 @@
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<ClCompile Include="NXDNLookup.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="NXDNSACCH.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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</ItemGroup>
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</Project>
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309
NXDNCRC.cpp
309
NXDNCRC.cpp
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@ -1,5 +1,5 @@
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/*
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* Copyright (C) 2015,2016,2018 by Jonathan Naylor G4KLX
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* Copyright (C) 2018 by Jonathan Naylor G4KLX
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -18,223 +18,132 @@
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#include "NXDNCRC.h"
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#include "Utils.h"
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#include "Log.h"
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#include <cstdint>
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#include <cstdio>
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#include <cassert>
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#include <cmath>
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const uint8_t CRC8_TABLE[] = {
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0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15, 0x38, 0x3F, 0x36, 0x31,
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0x24, 0x23, 0x2A, 0x2D, 0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65,
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0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, 0x5A, 0x5D, 0xE0, 0xE7, 0xEE, 0xE9,
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0xFC, 0xFB, 0xF2, 0xF5, 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, 0xC3, 0xCA, 0xCD,
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0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85, 0xA8, 0xAF, 0xA6, 0xA1,
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0xB4, 0xB3, 0xBA, 0xBD, 0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2,
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0xFF, 0xF8, 0xF1, 0xF6, 0xE3, 0xE4, 0xED, 0xEA, 0xB7, 0xB0, 0xB9, 0xBE,
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0xAB, 0xAC, 0xA5, 0xA2, 0x8F, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A,
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0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32, 0x1F, 0x18, 0x11, 0x16,
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0x03, 0x04, 0x0D, 0x0A, 0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42,
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0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A, 0x89, 0x8E, 0x87, 0x80,
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0x95, 0x92, 0x9B, 0x9C, 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4,
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0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, 0xEB, 0xEC, 0xC1, 0xC6, 0xCF, 0xC8,
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0xDD, 0xDA, 0xD3, 0xD4, 0x69, 0x6E, 0x67, 0x60, 0x75, 0x72, 0x7B, 0x7C,
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0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44, 0x19, 0x1E, 0x17, 0x10,
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0x05, 0x02, 0x0B, 0x0C, 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34,
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0x4E, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5C, 0x5B, 0x76, 0x71, 0x78, 0x7F,
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0x6A, 0x6D, 0x64, 0x63, 0x3E, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B,
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0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13, 0xAE, 0xA9, 0xA0, 0xA7,
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0xB2, 0xB5, 0xBC, 0xBB, 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83,
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0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB, 0xE6, 0xE1, 0xE8, 0xEF,
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0xFA, 0xFD, 0xF4, 0xF3, 0x01 };
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const uint8_t BIT_MASK_TABLE1[] = { 0x80U, 0x40U, 0x20U, 0x10U, 0x08U, 0x04U, 0x02U, 0x01U };
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const uint16_t BIT_MASK_TABLE2[] = { 0x8000U, 0x4000U, 0x2000U, 0x1000U, 0x0800U, 0x0400U, 0x0200U, 0x0100U,
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0x0080U, 0x0040U, 0x0020U, 0x0010U, 0x0008U, 0x0004U, 0x0002U, 0x0001U };
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const uint16_t CCITT16_TABLE1[] = {
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0x0000U, 0x1189U, 0x2312U, 0x329bU, 0x4624U, 0x57adU, 0x6536U, 0x74bfU,
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0x8c48U, 0x9dc1U, 0xaf5aU, 0xbed3U, 0xca6cU, 0xdbe5U, 0xe97eU, 0xf8f7U,
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0x1081U, 0x0108U, 0x3393U, 0x221aU, 0x56a5U, 0x472cU, 0x75b7U, 0x643eU,
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0x9cc9U, 0x8d40U, 0xbfdbU, 0xae52U, 0xdaedU, 0xcb64U, 0xf9ffU, 0xe876U,
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0x2102U, 0x308bU, 0x0210U, 0x1399U, 0x6726U, 0x76afU, 0x4434U, 0x55bdU,
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0xad4aU, 0xbcc3U, 0x8e58U, 0x9fd1U, 0xeb6eU, 0xfae7U, 0xc87cU, 0xd9f5U,
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0x3183U, 0x200aU, 0x1291U, 0x0318U, 0x77a7U, 0x662eU, 0x54b5U, 0x453cU,
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0xbdcbU, 0xac42U, 0x9ed9U, 0x8f50U, 0xfbefU, 0xea66U, 0xd8fdU, 0xc974U,
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0x4204U, 0x538dU, 0x6116U, 0x709fU, 0x0420U, 0x15a9U, 0x2732U, 0x36bbU,
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0xce4cU, 0xdfc5U, 0xed5eU, 0xfcd7U, 0x8868U, 0x99e1U, 0xab7aU, 0xbaf3U,
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0x5285U, 0x430cU, 0x7197U, 0x601eU, 0x14a1U, 0x0528U, 0x37b3U, 0x263aU,
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0xdecdU, 0xcf44U, 0xfddfU, 0xec56U, 0x98e9U, 0x8960U, 0xbbfbU, 0xaa72U,
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0x6306U, 0x728fU, 0x4014U, 0x519dU, 0x2522U, 0x34abU, 0x0630U, 0x17b9U,
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0xef4eU, 0xfec7U, 0xcc5cU, 0xddd5U, 0xa96aU, 0xb8e3U, 0x8a78U, 0x9bf1U,
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0x7387U, 0x620eU, 0x5095U, 0x411cU, 0x35a3U, 0x242aU, 0x16b1U, 0x0738U,
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0xffcfU, 0xee46U, 0xdcddU, 0xcd54U, 0xb9ebU, 0xa862U, 0x9af9U, 0x8b70U,
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0x8408U, 0x9581U, 0xa71aU, 0xb693U, 0xc22cU, 0xd3a5U, 0xe13eU, 0xf0b7U,
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0x0840U, 0x19c9U, 0x2b52U, 0x3adbU, 0x4e64U, 0x5fedU, 0x6d76U, 0x7cffU,
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0x9489U, 0x8500U, 0xb79bU, 0xa612U, 0xd2adU, 0xc324U, 0xf1bfU, 0xe036U,
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0x18c1U, 0x0948U, 0x3bd3U, 0x2a5aU, 0x5ee5U, 0x4f6cU, 0x7df7U, 0x6c7eU,
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0xa50aU, 0xb483U, 0x8618U, 0x9791U, 0xe32eU, 0xf2a7U, 0xc03cU, 0xd1b5U,
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0x2942U, 0x38cbU, 0x0a50U, 0x1bd9U, 0x6f66U, 0x7eefU, 0x4c74U, 0x5dfdU,
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0xb58bU, 0xa402U, 0x9699U, 0x8710U, 0xf3afU, 0xe226U, 0xd0bdU, 0xc134U,
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0x39c3U, 0x284aU, 0x1ad1U, 0x0b58U, 0x7fe7U, 0x6e6eU, 0x5cf5U, 0x4d7cU,
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0xc60cU, 0xd785U, 0xe51eU, 0xf497U, 0x8028U, 0x91a1U, 0xa33aU, 0xb2b3U,
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0x4a44U, 0x5bcdU, 0x6956U, 0x78dfU, 0x0c60U, 0x1de9U, 0x2f72U, 0x3efbU,
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0xd68dU, 0xc704U, 0xf59fU, 0xe416U, 0x90a9U, 0x8120U, 0xb3bbU, 0xa232U,
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0x5ac5U, 0x4b4cU, 0x79d7U, 0x685eU, 0x1ce1U, 0x0d68U, 0x3ff3U, 0x2e7aU,
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0xe70eU, 0xf687U, 0xc41cU, 0xd595U, 0xa12aU, 0xb0a3U, 0x8238U, 0x93b1U,
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0x6b46U, 0x7acfU, 0x4854U, 0x59ddU, 0x2d62U, 0x3cebU, 0x0e70U, 0x1ff9U,
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0xf78fU, 0xe606U, 0xd49dU, 0xc514U, 0xb1abU, 0xa022U, 0x92b9U, 0x8330U,
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0x7bc7U, 0x6a4eU, 0x58d5U, 0x495cU, 0x3de3U, 0x2c6aU, 0x1ef1U, 0x0f78U };
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#define WRITE_BIT1(p,i,b) p[(i)>>3] = (b) ? (p[(i)>>3] | BIT_MASK_TABLE1[(i)&7]) : (p[(i)>>3] & ~BIT_MASK_TABLE1[(i)&7])
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#define READ_BIT1(p,i) (p[(i)>>3] & BIT_MASK_TABLE1[(i)&7])
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const uint16_t CCITT16_TABLE2[] = {
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0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
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0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
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0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
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0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
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0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
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0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
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0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
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0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
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0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
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0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
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0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
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0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
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0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
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0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
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0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
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0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
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0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
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0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
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0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
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0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
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0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
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0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
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0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
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0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
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0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
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0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
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0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
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0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
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0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
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0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
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0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
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0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0 };
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#define READ_BIT2(p,i) (p[(i)>>4] & BIT_MASK_TABLE2[(i)&15])
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bool CNXDNCRC::checkFiveBit(bool* in, unsigned int tcrc)
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bool CNXDNCRC::checkCRC6(const unsigned char* in, unsigned int offset, unsigned int length)
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{
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assert(in != NULL);
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unsigned int crc;
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encodeFiveBit(in, crc);
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uint8_t crc[1U];
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crc[0U] = createCRC6(in, offset, length);
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return crc == tcrc;
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}
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void CNXDNCRC::encodeFiveBit(const bool* in, unsigned int& tcrc)
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{
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assert(in != NULL);
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unsigned short total = 0U;
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for (unsigned int i = 0U; i < 72U; i += 8U) {
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unsigned char c;
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CUtils::bitsToByteBE(in + i, c);
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total += c;
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unsigned int n = offset + length;
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for (unsigned int i = 0U; i < 6U; i++, n++) {
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bool b1 = READ_BIT1(crc, i);
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bool b2 = READ_BIT1(in, n);
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if (b1 != b2)
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return false;
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}
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total %= 31U;
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tcrc = total;
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return true;
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}
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void CNXDNCRC::addCCITT162(unsigned char *in, unsigned int length)
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{
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assert(in != NULL);
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assert(length > 2U);
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union {
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uint16_t crc16;
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uint8_t crc8[2U];
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};
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crc16 = 0U;
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for (unsigned i = 0U; i < (length - 2U); i++)
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crc16 = (uint16_t(crc8[0U]) << 8) ^ CCITT16_TABLE2[crc8[1U] ^ in[i]];
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crc16 = ~crc16;
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in[length - 1U] = crc8[0U];
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in[length - 2U] = crc8[1U];
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}
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bool CNXDNCRC::checkCCITT162(const unsigned char *in, unsigned int length)
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{
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assert(in != NULL);
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assert(length > 2U);
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union {
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uint16_t crc16;
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uint8_t crc8[2U];
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};
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crc16 = 0U;
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for (unsigned i = 0U; i < (length - 2U); i++)
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crc16 = (uint16_t(crc8[0U]) << 8) ^ CCITT16_TABLE2[crc8[1U] ^ in[i]];
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crc16 = ~crc16;
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return crc8[0U] == in[length - 1U] && crc8[1U] == in[length - 2U];
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}
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void CNXDNCRC::addCCITT161(unsigned char *in, unsigned int length)
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{
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assert(in != NULL);
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assert(length > 2U);
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union {
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uint16_t crc16;
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uint8_t crc8[2U];
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};
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crc16 = 0xFFFFU;
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for (unsigned int i = 0U; i < (length - 2U); i++)
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crc16 = uint16_t(crc8[1U]) ^ CCITT16_TABLE1[crc8[0U] ^ in[i]];
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crc16 = ~crc16;
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in[length - 2U] = crc8[0U];
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in[length - 1U] = crc8[1U];
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}
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bool CNXDNCRC::checkCCITT161(const unsigned char *in, unsigned int length)
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{
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assert(in != NULL);
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assert(length > 2U);
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union {
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uint16_t crc16;
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uint8_t crc8[2U];
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};
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crc16 = 0xFFFFU;
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for (unsigned int i = 0U; i < (length - 2U); i++)
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crc16 = uint16_t(crc8[1U]) ^ CCITT16_TABLE1[crc8[0U] ^ in[i]];
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||||
|
||||
crc16 = ~crc16;
|
||||
|
||||
return crc8[0U] == in[length - 2U] && crc8[1U] == in[length - 1U];
|
||||
}
|
||||
|
||||
unsigned char CNXDNCRC::crc8(const unsigned char *in, unsigned int length)
|
||||
void CNXDNCRC::encodeCRC6(unsigned char* in, unsigned int offset, unsigned int length)
|
||||
{
|
||||
assert(in != NULL);
|
||||
|
||||
uint8_t crc = 0U;
|
||||
uint8_t crc[1U];
|
||||
crc[0U] = createCRC6(in, offset, length);
|
||||
|
||||
for (unsigned int i = 0U; i < length; i++)
|
||||
crc = CRC8_TABLE[crc ^ in[i]];
|
||||
unsigned int n = offset + length;
|
||||
for (unsigned int i = 0U; i < 6U; i++, n++) {
|
||||
bool b = READ_BIT1(crc, i);
|
||||
WRITE_BIT1(in, n, b);
|
||||
}
|
||||
}
|
||||
|
||||
bool CNXDNCRC::checkCRC12(const unsigned char* in, unsigned int offset, unsigned int length)
|
||||
{
|
||||
assert(in != NULL);
|
||||
|
||||
uint16_t crc[1U];
|
||||
crc[0U] = createCRC12(in, offset, length);
|
||||
|
||||
unsigned int n = offset + length;
|
||||
for (unsigned int i = 0U; i < 12U; i++, n++) {
|
||||
bool b1 = READ_BIT2(crc, i);
|
||||
bool b2 = READ_BIT1(in, n);
|
||||
if (b1 != b2)
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void CNXDNCRC::encodeCRC12(unsigned char* in, unsigned int offset, unsigned int length)
|
||||
{
|
||||
assert(in != NULL);
|
||||
|
||||
uint16_t crc[1U];
|
||||
crc[0U] = createCRC12(in, offset, length);
|
||||
|
||||
unsigned int n = offset + length;
|
||||
for (unsigned int i = 0U; i < 12U; i++, n++) {
|
||||
bool b = READ_BIT2(crc, i);
|
||||
WRITE_BIT1(in, n, b);
|
||||
}
|
||||
}
|
||||
|
||||
bool CNXDNCRC::checkCRC15(const unsigned char* in, unsigned int offset, unsigned int length)
|
||||
{
|
||||
assert(in != NULL);
|
||||
|
||||
uint16_t crc[1U];
|
||||
crc[0U] = createCRC15(in, offset, length);
|
||||
|
||||
unsigned int n = offset + length;
|
||||
for (unsigned int i = 0U; i < 15U; i++, n++) {
|
||||
bool b1 = READ_BIT2(crc, i);
|
||||
bool b2 = READ_BIT1(in, n);
|
||||
if (b1 != b2)
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void CNXDNCRC::encodeCRC15(unsigned char* in, unsigned int offset, unsigned int length)
|
||||
{
|
||||
assert(in != NULL);
|
||||
|
||||
uint16_t crc[1U];
|
||||
crc[0U] = createCRC15(in, offset, length);
|
||||
|
||||
unsigned int n = offset + length;
|
||||
for (unsigned int i = 0U; i < 15U; i++, n++) {
|
||||
bool b = READ_BIT2(crc, i);
|
||||
WRITE_BIT1(in, n, b);
|
||||
}
|
||||
}
|
||||
|
||||
uint8_t CNXDNCRC::createCRC6(const unsigned char* in, unsigned int offset, unsigned int length)
|
||||
{
|
||||
uint8_t crc = 0x3FU;
|
||||
|
||||
return crc;
|
||||
}
|
||||
|
||||
|
||||
uint16_t CNXDNCRC::createCRC12(const unsigned char* in, unsigned int offset, unsigned int length)
|
||||
{
|
||||
uint16_t crc = 0x0FFFU;
|
||||
|
||||
return crc;
|
||||
}
|
||||
|
||||
uint16_t CNXDNCRC::createCRC15(const unsigned char* in, unsigned int offset, unsigned int length)
|
||||
{
|
||||
uint16_t crc = 0x7FFFU;
|
||||
|
||||
return crc;
|
||||
}
|
||||
|
|
|
|||
21
NXDNCRC.h
21
NXDNCRC.h
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* Copyright (C) 2015,2016,2018 by Jonathan Naylor G4KLX
|
||||
* Copyright (C) 2018 by Jonathan Naylor G4KLX
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
|
|
@ -19,19 +19,24 @@
|
|||
#if !defined(NXDNCRC_H)
|
||||
#define NXDNCRC_H
|
||||
|
||||
#include <cstdint>
|
||||
|
||||
class CNXDNCRC
|
||||
{
|
||||
public:
|
||||
static bool checkFiveBit(bool* in, unsigned int tcrc);
|
||||
static void encodeFiveBit(const bool* in, unsigned int& tcrc);
|
||||
static bool checkCRC6(const unsigned char* in, unsigned int offset, unsigned int length);
|
||||
static void encodeCRC6(unsigned char* in, unsigned int offset, unsigned int length);
|
||||
|
||||
static void addCCITT161(unsigned char* in, unsigned int length);
|
||||
static void addCCITT162(unsigned char* in, unsigned int length);
|
||||
static bool checkCRC12(const unsigned char* in, unsigned int offset, unsigned int length);
|
||||
static void encodeCRC12(unsigned char* in, unsigned int offset, unsigned int length);
|
||||
|
||||
static bool checkCCITT161(const unsigned char* in, unsigned int length);
|
||||
static bool checkCCITT162(const unsigned char* in, unsigned int length);
|
||||
static bool checkCRC15(const unsigned char* in, unsigned int offset, unsigned int length);
|
||||
static void encodeCRC15(unsigned char* in, unsigned int offset, unsigned int length);
|
||||
|
||||
static unsigned char crc8(const unsigned char* in, unsigned int length);
|
||||
private:
|
||||
static uint8_t createCRC6(const unsigned char* in, unsigned int offser, unsigned int length);
|
||||
static uint16_t createCRC12(const unsigned char* in, unsigned int offser, unsigned int length);
|
||||
static uint16_t createCRC15(const unsigned char* in, unsigned int offser, unsigned int length);
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
|
|||
198
NXDNControl.cpp
198
NXDNControl.cpp
|
|
@ -12,6 +12,7 @@
|
|||
*/
|
||||
|
||||
#include "NXDNControl.h"
|
||||
#include "NXDNSACCH.h"
|
||||
#include "Utils.h"
|
||||
#include "Sync.h"
|
||||
#include "Log.h"
|
||||
|
|
@ -150,190 +151,21 @@ bool CNXDNControl::writeModem(unsigned char *data, unsigned int len)
|
|||
unsigned char usc = m_lastLICH.getFCT();
|
||||
unsigned char option = m_lastLICH.getOption();
|
||||
|
||||
bool ret = false;
|
||||
#ifdef notdef
|
||||
if (usc == NXDN_LICH_USC_UDCH) {
|
||||
bool ret;
|
||||
if (usc == NXDN_LICH_USC_UDCH)
|
||||
ret = processData(option, data);
|
||||
else
|
||||
ret = processVoice(usc, option, data);
|
||||
#endif
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
bool CNXDNControl::processVoice(unsigned char usc, unsigned char option, unsigned char *data)
|
||||
{
|
||||
CNXDNSACCH sacch;
|
||||
sacch.decode(data + 2U);
|
||||
|
||||
#ifdef notdef
|
||||
bool CNXDNControl::processVWData(bool valid, unsigned char *data)
|
||||
{
|
||||
unsigned char fi = m_lastFICH.getFI();
|
||||
if (valid && fi == YSF_FI_HEADER) {
|
||||
if (m_rfState == RS_RF_LISTENING) {
|
||||
bool valid = m_rfPayload.processHeaderData(data + 2U);
|
||||
if (!valid)
|
||||
return false;
|
||||
|
||||
m_rfSource = m_rfPayload.getSource();
|
||||
|
||||
if (m_selfOnly) {
|
||||
bool ret = checkCallsign(m_rfSource);
|
||||
if (!ret) {
|
||||
LogMessage("NXDN, invalid access attempt from %10.10s", m_rfSource);
|
||||
m_rfState = RS_RF_REJECTED;
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
unsigned char cm = m_lastFICH.getCM();
|
||||
if (cm == YSF_CM_GROUP1 || cm == YSF_CM_GROUP2)
|
||||
m_rfDest = (unsigned char*)"ALL ";
|
||||
else
|
||||
m_rfDest = m_rfPayload.getDest();
|
||||
|
||||
m_rfFrames = 0U;
|
||||
m_rfErrs = 0U;
|
||||
m_rfBits = 1U;
|
||||
m_rfTimeoutTimer.start();
|
||||
m_rfState = RS_RF_AUDIO;
|
||||
|
||||
m_minRSSI = m_rssi;
|
||||
m_maxRSSI = m_rssi;
|
||||
m_aveRSSI = m_rssi;
|
||||
m_rssiCount = 1U;
|
||||
#if defined(DUMP_NXDN)
|
||||
openFile();
|
||||
#endif
|
||||
|
||||
m_display->writeFusion((char*)m_rfSource, (char*)m_rfDest, "R", " ");
|
||||
LogMessage("NXDN, received RF header from %10.10s to %10.10s", m_rfSource, m_rfDest);
|
||||
|
||||
CSync::addNXDNSync(data + 2U);
|
||||
|
||||
CYSFFICH fich = m_lastFICH;
|
||||
|
||||
// Remove any DSQ information
|
||||
fich.setSQL(false);
|
||||
fich.setSQ(0U);
|
||||
fich.encode(data + 2U);
|
||||
|
||||
data[0U] = TAG_DATA;
|
||||
data[1U] = 0x00U;
|
||||
|
||||
writeNetwork(data, m_rfFrames % 128U);
|
||||
|
||||
#if defined(DUMP_NXDN)
|
||||
writeFile(data + 2U);
|
||||
#endif
|
||||
|
||||
if (m_duplex) {
|
||||
fich.setMR(m_remoteGateway ? YSF_MR_NOT_BUSY : YSF_MR_BUSY);
|
||||
fich.encode(data + 2U);
|
||||
writeQueueRF(data);
|
||||
}
|
||||
|
||||
m_rfFrames++;
|
||||
|
||||
m_display->writeFusionRSSI(m_rssi);
|
||||
|
||||
return true;
|
||||
}
|
||||
} else if (valid && fi == YSF_FI_TERMINATOR) {
|
||||
if (m_rfState == RS_RF_REJECTED) {
|
||||
m_rfPayload.reset();
|
||||
m_rfSource = NULL;
|
||||
m_rfDest = NULL;
|
||||
m_rfState = RS_RF_LISTENING;
|
||||
} else if (m_rfState == RS_RF_AUDIO) {
|
||||
m_rfPayload.processHeaderData(data + 2U);
|
||||
|
||||
CSync::addNXDNSync(data + 2U);
|
||||
|
||||
CYSFFICH fich = m_lastFICH;
|
||||
|
||||
// Remove any DSQ information
|
||||
fich.setSQL(false);
|
||||
fich.setSQ(0U);
|
||||
fich.encode(data + 2U);
|
||||
|
||||
data[0U] = TAG_EOT;
|
||||
data[1U] = 0x00U;
|
||||
|
||||
writeNetwork(data, m_rfFrames % 128U);
|
||||
|
||||
#if defined(DUMP_NXDN)
|
||||
writeFile(data + 2U);
|
||||
#endif
|
||||
|
||||
if (m_duplex) {
|
||||
fich.setMR(m_remoteGateway ? YSF_MR_NOT_BUSY : YSF_MR_BUSY);
|
||||
fich.encode(data + 2U);
|
||||
writeQueueRF(data);
|
||||
}
|
||||
|
||||
m_rfFrames++;
|
||||
|
||||
if (m_rssi != 0U)
|
||||
LogMessage("NXDN, received RF end of transmission, %.1f seconds, BER: %.1f%%, RSSI: -%u/-%u/-%u dBm", float(m_rfFrames) / 10.0F, float(m_rfErrs * 100U) / float(m_rfBits), m_minRSSI, m_maxRSSI, m_aveRSSI / m_rssiCount);
|
||||
else
|
||||
LogMessage("NXDN, received RF end of transmission, %.1f seconds, BER: %.1f%%", float(m_rfFrames) / 10.0F, float(m_rfErrs * 100U) / float(m_rfBits));
|
||||
|
||||
writeEndRF();
|
||||
}
|
||||
} else {
|
||||
if (m_rfState == RS_RF_AUDIO) {
|
||||
// If valid is false, update the m_lastFICH for this transmission
|
||||
if (!valid) {
|
||||
// XXX Check these values
|
||||
m_lastFICH.setFT(0U);
|
||||
m_lastFICH.setFN(0U);
|
||||
}
|
||||
|
||||
CSync::addNXDNSync(data + 2U);
|
||||
|
||||
CYSFFICH fich = m_lastFICH;
|
||||
|
||||
unsigned char fn = fich.getFN();
|
||||
unsigned char ft = fich.getFT();
|
||||
|
||||
if (fn != 0U || ft != 1U) {
|
||||
// The first packet after the header is odd, don't try and regenerate it
|
||||
unsigned int errors = m_rfPayload.processVoiceFRModeAudio(data + 2U);
|
||||
m_rfErrs += errors;
|
||||
m_rfBits += 720U;
|
||||
m_display->writeFusionBER(float(errors) / 7.2F);
|
||||
LogDebug("NXDN, V Mode 3, seq %u, AMBE FEC %u/720 (%.1f%%)", m_rfFrames % 128, errors, float(errors) / 7.2F);
|
||||
}
|
||||
|
||||
// Remove any DSQ information
|
||||
fich.setSQL(false);
|
||||
fich.setSQ(0U);
|
||||
fich.encode(data + 2U);
|
||||
|
||||
data[0U] = TAG_DATA;
|
||||
data[1U] = 0x00U;
|
||||
|
||||
writeNetwork(data, m_rfFrames % 128U);
|
||||
|
||||
if (m_duplex) {
|
||||
fich.setMR(m_remoteGateway ? YSF_MR_NOT_BUSY : YSF_MR_BUSY);
|
||||
fich.encode(data + 2U);
|
||||
writeQueueRF(data);
|
||||
}
|
||||
|
||||
#if defined(DUMP_NXDN)
|
||||
writeFile(data + 2U);
|
||||
#endif
|
||||
|
||||
m_rfFrames++;
|
||||
|
||||
m_display->writeFusionRSSI(m_rssi);
|
||||
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
bool CNXDNControl::processDNData(bool valid, unsigned char *data)
|
||||
{
|
||||
unsigned char fi = m_lastFICH.getFI();
|
||||
if (valid && fi == YSF_FI_HEADER) {
|
||||
if (m_rfState == RS_RF_LISTENING) {
|
||||
|
|
@ -645,12 +477,14 @@ bool CNXDNControl::processDNData(bool valid, unsigned char *data)
|
|||
return true;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
bool CNXDNControl::processFRData(bool valid, unsigned char *data)
|
||||
bool CNXDNControl::processData(unsigned char usc, unsigned char *data)
|
||||
{
|
||||
#ifdef notdef
|
||||
unsigned char fi = m_lastFICH.getFI();
|
||||
if (valid && fi == YSF_FI_HEADER) {
|
||||
if (m_rfState == RS_RF_LISTENING) {
|
||||
|
|
@ -809,12 +643,10 @@ bool CNXDNControl::processFRData(bool valid, unsigned char *data)
|
|||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
return false;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
unsigned int CNXDNControl::readModem(unsigned char* data)
|
||||
{
|
||||
assert(data != NULL);
|
||||
|
|
@ -837,7 +669,7 @@ void CNXDNControl::writeEndRF()
|
|||
m_rfTimeoutTimer.stop();
|
||||
|
||||
if (m_netState == RS_NET_IDLE) {
|
||||
m_display->clearFusion();
|
||||
m_display->clearNXDN();
|
||||
|
||||
if (m_network != NULL)
|
||||
m_network->reset();
|
||||
|
|
@ -856,7 +688,7 @@ void CNXDNControl::writeEndNet()
|
|||
m_networkWatchdog.stop();
|
||||
m_packetTimer.stop();
|
||||
|
||||
m_display->clearFusion();
|
||||
m_display->clearNXDN();
|
||||
|
||||
if (m_network != NULL)
|
||||
m_network->reset();
|
||||
|
|
|
|||
|
|
@ -35,6 +35,10 @@ const unsigned int NXDN_FSW_BYTES_LENGTH = 3U;
|
|||
|
||||
const unsigned int NXDN_LICH_LENGTH_BITS = 16U;
|
||||
|
||||
const unsigned int NXDN_SACCH_LENGTH_BITS = 60U;
|
||||
const unsigned int NXDN_FACCH1_LENGTH_BITS = 144U;
|
||||
const unsigned int NXDN_FACCH2_LENGTH_BITS = 348U;
|
||||
|
||||
const unsigned char NXDN_LICH_RFCT_RCCH = 0U;
|
||||
const unsigned char NXDN_LICH_RFCT_RTCH = 1U;
|
||||
const unsigned char NXDN_LICH_RFCT_RDCH = 2U;
|
||||
|
|
@ -53,4 +57,10 @@ const unsigned char NXDN_LICH_STEAL_FACCH = 0U;
|
|||
const unsigned char NXDN_LICH_DIRECTION_INBOUND = 0U;
|
||||
const unsigned char NXDN_LICH_DIRECTION_OUTBOUND = 1U;
|
||||
|
||||
const unsigned char NXDN_SR_SINGLE = 0U;
|
||||
const unsigned char NXDN_SR_4_4 = 0U;
|
||||
const unsigned char NXDN_SR_3_4 = 1U;
|
||||
const unsigned char NXDN_SR_2_4 = 2U;
|
||||
const unsigned char NXDN_SR_1_4 = 3U;
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -61,7 +61,7 @@ bool CNXDNLICH::decode(const unsigned char* bytes)
|
|||
|
||||
bool parity = b[7U] ^ b[6U] ^ b[5U] ^ b[4U];
|
||||
|
||||
// LogMessage("NXDN, LICH bits: %d%d %d%d %d%d %d - %d, parity: %d", b[7U] ? 1 : 0, b[6U] ? 1 : 0, b[5U] ? 1 : 0, b[4U] ? 1 : 0, b[3U] ? 1 : 0, b[2U] ? 1 : 0, b[1U] ? 1 : 0, b[0U] ? 1 : 0, parity ? 1 : 0);
|
||||
LogMessage("NXDN, LICH bits: %d%d %d%d %d%d %d - %d, parity: %d", b[7U] ? 1 : 0, b[6U] ? 1 : 0, b[5U] ? 1 : 0, b[4U] ? 1 : 0, b[3U] ? 1 : 0, b[2U] ? 1 : 0, b[1U] ? 1 : 0, b[0U] ? 1 : 0, parity ? 1 : 0);
|
||||
|
||||
if (parity != b[0U])
|
||||
return false;
|
||||
|
|
|
|||
141
NXDNSACCH.cpp
Normal file
141
NXDNSACCH.cpp
Normal file
|
|
@ -0,0 +1,141 @@
|
|||
/*
|
||||
* Copyright (C) 2018 by Jonathan Naylor G4KLX
|
||||
*
|
||||
* This program 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
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program 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 this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#include "NXDNSACCH.h"
|
||||
|
||||
#include "NXDNConvolution.h"
|
||||
#include "NXDNDefines.h"
|
||||
#include "NXDNCRC.h"
|
||||
#include "Utils.h"
|
||||
|
||||
#include <cstdio>
|
||||
#include <cassert>
|
||||
#include <cstring>
|
||||
|
||||
const unsigned int INTERLEAVE_TABLE[] = {
|
||||
0U, 5U, 10U, 15U, 20U, 25U, 30U, 35U, 40U, 45U, 50U, 55U,
|
||||
1U, 6U, 11U, 16U, 21U, 26U, 31U, 36U, 41U, 46U, 51U, 56U,
|
||||
2U, 7U, 12U, 17U, 22U, 27U, 32U, 37U, 42U, 47U, 52U, 57U,
|
||||
3U, 8U, 13U, 18U, 23U, 28U, 33U, 38U, 43U, 48U, 53U, 58U,
|
||||
4U, 9U, 14U, 19U, 24U, 29U, 34U, 39U, 44U, 49U, 54U, 59U
|
||||
};
|
||||
|
||||
const unsigned int PUNCTURE_LIST[] = { 5U, 11U, 17U, 23U, 29U, 35U, 41U, 47U, 53U, 59U };
|
||||
|
||||
const unsigned char BIT_MASK_TABLE[] = { 0x80U, 0x40U, 0x20U, 0x10U, 0x08U, 0x04U, 0x02U, 0x01U };
|
||||
|
||||
#define WRITE_BIT1(p,i,b) p[(i)>>3] = (b) ? (p[(i)>>3] | BIT_MASK_TABLE[(i)&7]) : (p[(i)>>3] & ~BIT_MASK_TABLE[(i)&7])
|
||||
#define READ_BIT1(p,i) (p[(i)>>3] & BIT_MASK_TABLE[(i)&7])
|
||||
|
||||
CNXDNSACCH::CNXDNSACCH() :
|
||||
m_data(NULL)
|
||||
{
|
||||
m_data = new unsigned char[5U];
|
||||
}
|
||||
|
||||
CNXDNSACCH::~CNXDNSACCH()
|
||||
{
|
||||
delete[] m_data;
|
||||
}
|
||||
|
||||
bool CNXDNSACCH::decode(const unsigned char* data)
|
||||
{
|
||||
assert(data != NULL);
|
||||
|
||||
unsigned char temp1[8U];
|
||||
|
||||
for (unsigned int i = 0U; i < NXDN_SACCH_LENGTH_BITS; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE[i] + NXDN_LICH_LENGTH_BITS;
|
||||
bool b = READ_BIT1(data, n);
|
||||
WRITE_BIT1(temp1, i, b);
|
||||
}
|
||||
|
||||
unsigned char temp2[8U];
|
||||
|
||||
unsigned int n = 0U;
|
||||
unsigned int index = 0U;
|
||||
for (unsigned int i = 0U; i < NXDN_SACCH_LENGTH_BITS; i++) {
|
||||
if (i == PUNCTURE_LIST[index]) {
|
||||
WRITE_BIT1(temp2, n, false);
|
||||
index++;
|
||||
n++;
|
||||
}
|
||||
|
||||
bool b = READ_BIT1(temp1, i);
|
||||
WRITE_BIT1(temp2, n, b);
|
||||
n++;
|
||||
}
|
||||
|
||||
CNXDNConvolution conv;
|
||||
conv.start();
|
||||
|
||||
n = 0U;
|
||||
for (unsigned int i = 0U; i < 36U; i++) {
|
||||
uint8_t s0 = READ_BIT1(temp2, n) ? 1U : 0U;
|
||||
n++;
|
||||
uint8_t s1 = READ_BIT1(temp2, n) ? 1U : 0U;
|
||||
|
||||
conv.decode(s0, s1);
|
||||
}
|
||||
|
||||
conv.chainback(m_data, 36U);
|
||||
|
||||
CUtils::dump("NXDN, SACCH", m_data, 5U);
|
||||
|
||||
bool valid = CNXDNCRC::checkCRC6(m_data, 0U, 32U);
|
||||
// if (!valid)
|
||||
// return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
unsigned char CNXDNSACCH::getRAN() const
|
||||
{
|
||||
return m_data[0U] & 0x3FU;
|
||||
}
|
||||
|
||||
unsigned char CNXDNSACCH::getStructure() const
|
||||
{
|
||||
return (m_data[0U] >> 6) & 0x03U;
|
||||
}
|
||||
|
||||
void CNXDNSACCH::getData(unsigned char* data) const
|
||||
{
|
||||
assert(data != NULL);
|
||||
|
||||
::memcpy(data, m_data + 1U, 3U);
|
||||
}
|
||||
|
||||
void CNXDNSACCH::setRAN(unsigned char ran)
|
||||
{
|
||||
m_data[0U] &= 0xC0U;
|
||||
m_data[0U] |= ran;
|
||||
}
|
||||
|
||||
void CNXDNSACCH::setStructure(unsigned char structure)
|
||||
{
|
||||
m_data[0U] &= 0x3FU;
|
||||
m_data[0U] |= (structure << 6) & 0xC0U;
|
||||
}
|
||||
|
||||
void CNXDNSACCH::setData(const unsigned char* data)
|
||||
{
|
||||
assert(data != NULL);
|
||||
|
||||
::memcpy(m_data + 1U, data, 3U);
|
||||
}
|
||||
45
NXDNSACCH.h
Normal file
45
NXDNSACCH.h
Normal file
|
|
@ -0,0 +1,45 @@
|
|||
/*
|
||||
* Copyright (C) 2018 by Jonathan Naylor G4KLX
|
||||
*
|
||||
* This program 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
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program 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 this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#if !defined(NXDNSACCH_H)
|
||||
#define NXDNSACCH_H
|
||||
|
||||
class CNXDNSACCH {
|
||||
public:
|
||||
CNXDNSACCH();
|
||||
~CNXDNSACCH();
|
||||
|
||||
bool decode(const unsigned char* data);
|
||||
|
||||
void encode(unsigned char* data);
|
||||
|
||||
unsigned char getRAN() const;
|
||||
unsigned char getStructure() const;
|
||||
|
||||
void getData(unsigned char* data) const;
|
||||
|
||||
void setRAN(unsigned char ran);
|
||||
void setStructure(unsigned char structure);
|
||||
|
||||
void setData(const unsigned char* data);
|
||||
|
||||
private:
|
||||
unsigned char* m_data;
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue