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annotate HexFile.cpp @ 4:e30f00f760d3 default tip

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Cleanup OSTC label and removed url The computer type will now show OSTC 4/5 instead of only 4. The url has been removed because it is no longer maintained. The ui header have been deleted because they are generated files shich should not be under version controll. Delete locally if you want to force an update of the dialog layout.
author Ideenmodellierer
date Sun, 30 Nov 2025 18:37:32 +0100
parents 0b3630a29ad8
children
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1
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1 /////////////////////////////////////////////////////////////////////////////
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2 /// \file HexFile.cpp
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3 /// \brief Read .hex file in "Intel HEX" format.
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4 /// \author JD Gascuel.
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5 ///
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6 /// \copyright (c) 2012-2016, JD Gascuel. All rights reserved.
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7 /// $Id$
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8 //////////////////////////////////////////////////////////////////////////////
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9 //
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10 // BSD 2-Clause License:
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11 //
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12 // Redistribution and use in source and binary forms, with or without
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13 // modification, are permitted provided that the following conditions
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14 // are met:
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15 //
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16 // 1. Redistributions of source code must retain the above copyright notice,
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17 // this list of conditions and the following disclaimer.
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18 //
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19 // 2. Redistributions in binary form must reproduce the above copyright notice,
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20 // this list of conditions and the following disclaimer in the documentation
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21 // and/or other materials provided with the distribution.
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22 //
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23 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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24 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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25 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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26 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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27 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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28 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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29 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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30 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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31 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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32 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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33 // THE POSSIBILITY OF SUCH DAMAGE.
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34 //
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35 //////////////////////////////////////////////////////////////////////////////
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36
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37 #include "HexFile.h"
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38
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39 #include "Utils/Log.h"
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40 #include "Utils/ProgressEvent.h"
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41
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42 #include <QCoreApplication>
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43 #include <QTextStream>
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44 #include <QtDebug>
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45
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46 //////////////////////////////////////////////////////////////////////////////
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47 // Crypto++ objects needed:
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48
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49 typedef unsigned char byte;
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50
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51 #include "AES/rijndael.h"
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52
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53 ///////////////////////////////////////////////////////////////////////////////
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54
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55 HexFile::HexFile()
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56 : _memSize(0),
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57 #ifdef FROG_MASTER
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58 _baseAddress(0),
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59 #endif
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60 _buffer(0)
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61 {}
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62
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63 HexFile::~HexFile()
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64 {
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65 delete[] _buffer; _buffer = 0;
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66 }
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67
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68 ///////////////////////////////////////////////////////////////////////////////
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69
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70 bool HexFile::allocate(size_t memSize, unsigned char fill)
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71 {
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72 delete[] _buffer;
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73 _buffer = new unsigned char[_memSize = memSize];
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74 Q_CHECK_PTR(_buffer);
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75
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76 memset(_buffer, fill, memSize);
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77 return true;
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78 }
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79
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80 bool HexFile::sqwiz(size_t newMemSize)
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81 {
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82 if( newMemSize >= _memSize ) {
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83 LOG_THROW( "Squiz failed" );
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84 }
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85 _memSize = newMemSize;
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86 return true;
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87 }
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88
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89 ///////////////////////////////////////////////////////////////////////////////
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90
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91 static size_t bytes = 0;
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92
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93 void HexFile::readLine()
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94 {
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95 QByteArray line = _file.readLine();
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96 if( line[0] != ':' )
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97 LOG_THROW( "Bad HEX format" );
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98
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99 unsigned char checksum = 0;
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100 bool ok = true;
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101 for(int i=1; ok && i<line.length(); i+=2) {
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102 if( line[i]=='\r' || line[i]=='\n' )
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103 break;
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104 checksum += line.mid(i,2).toInt(&ok,16);
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105 }
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106 if( ! ok )
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107 LOG_THROW( "Bad HEX header" );
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108 if( checksum != 0 )
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109 LOG_THROW( "Bad HEX checksum" );
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110
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111 int len = line.mid(1,2).toInt(0, 16);
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112 int addr = line.mid(3,2).toInt(0, 16) << 8
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113 | line.mid(5,2).toInt(0, 16);
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114 int type = line.mid(7,2).toInt(0, 16);
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115
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116 switch( type )
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117 {
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118 case 00: //---- Data record ----------------------------------------------
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119 if( _baseAddress == 0x300000 ) // Skip configuration bits.
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120 return;
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121 if( _baseAddress == 0xF00000 ) // Skip internal prom reset.
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122 return;
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123
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124 for(int i=0; i<len; i++, ++addr)
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125 {
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126 size_t a = _baseAddress + addr;
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127 if( a >= _memSize )
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128 LOG_THROW( "BAD HEX address" );
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129
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130 if( _buffer[a] != 0xFF )
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131 LOG_THROW( "Double write" );
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132
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133 _buffer[a] = line.mid(9+i*2,2).toInt(&ok,16);
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134 if( !ok )
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135 LOG_THROW( "Bad HEX byte" );
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136 bytes++;
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137 }
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138 break;
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139
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140 case 01: //---- END OF FILE record ---------------------------------------
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141 _file.seek(-1); // Force to end of file.
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142 break;
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143
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144 case 02: //---- Segment address record -----------------------------------
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145 if( len != 2 || addr != 0 )
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146 LOG_THROW( "Bad HEX Segment Address record" );
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147 _baseAddress = line.mid(9,4).toInt(0,16) << 4;
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148 break;
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149
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150 case 04: //---- Extended Linear Address Record ---------------------------
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151 if( len != 2 || addr != 0 )
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152 LOG_THROW( "Bad HEX Extended Linear Address Record" );
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153 _baseAddress = line.mid( 9,2).toInt(0,16) << 20
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154 | line.mid(11,2).toInt(0,16) << 16;
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155 break;
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156
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157 default:
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158 LOG_THROW("Bad HEX subtype");
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159 }
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160 }
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161
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162 ///////////////////////////////////////////////////////////////////////////////
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163
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164 void HexFile::load(const QString& fileName)
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165 {
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166 Q_ASSERT(_buffer);
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167
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168 _file.setFileName(fileName);
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169 if( ! _file.open(QIODevice::ReadOnly) )
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170 LOG_THROW("Can't open HEX file");
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171
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172 bytes = 0;
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173 while( ! _file.atEnd() )
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174 {
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175 PROGRESS(_file.pos(), _file.size());
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176 readLine();
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177 }
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178 PROGRESS_RESET();
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179
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180 _file.close();
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181
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182 LOG_TRACE( int(bytes/1024.0f) << "KB loaded ("
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183 << int(bytes * 100.0f / _memSize) << "% of firmware area).");
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184 }
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185
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186 ///////////////////////////////////////////////////////////////////////////////
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187
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188 const unsigned char* HexFile::data() const
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189 {
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190 Q_ASSERT(_buffer);
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191 return _buffer;
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192 }
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193
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194 ///////////////////////////////////////////////////////////////////////////////
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195
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196 unsigned int HexFile::checksum() const
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197 {
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198 Q_ASSERT(_buffer);
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199
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200 unsigned short low = 0;
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201 unsigned short high = 0;
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202 for(size_t i=0; i < _memSize; ++i)
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203 {
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204 low += _buffer[i];
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205 high += low;
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206 }
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207 return (((unsigned int)high) << 16) + low;
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208 }
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209
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210 ///////////////////////////////////////////////////////////////////////////////
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211
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212 #ifndef FROG_MASTER
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213 void HexFile::saveEncrypted(const QString&, byte [16])
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214 {
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215 LOG_THROW( "No encryption" );
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216 }
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217 #else
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218 void HexFile::saveEncrypted(const QString& fileName, byte secretKey[16])
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219 {
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220 _file.setFileName(fileName);
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221 if( ! _file.open(QIODevice::WriteOnly|QIODevice::Truncate) )
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222 LOG_THROW( "Can't save to encrypted file" );
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223
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224 QTextStream out(&_file);
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225 out.setIntegerBase(16);
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226 out.setPadChar('0');
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227
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228 //---- Generates 128 bits of random initialization vector ----------------
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229 Rijndael::CFB<128>::IV iv = {0};
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230 Rijndael::ECB<128> PRNG; PRNG.setupEncrypt(secretKey);
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231 for(int i=0; i<sizeof iv; ++i)
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232 iv[i] = PRNG.get_random() % 256;
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233
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234 size_t bytes = 0; // encrypted fake address
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235 for(int i0 = 0; i0 < sizeof iv; i0+=0x10)
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236 {
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237 out << qSetFieldWidth(1) << ":"
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238 << qSetFieldWidth(6) << bytes
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239 << qSetFieldWidth(2);
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240 for(int i=0; i<0x10; i++)
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241 out << iv[i0+i];
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242 out << qSetFieldWidth(1) << "\n";
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243 bytes += 0x10;
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244 }
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245
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246 //---- Create stream encryptor -------------------------------------------
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247 Rijndael::CFB<128> enc(secretKey, iv);
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248
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249 //---- Process data ------------------------------------------------------
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250 PROGRESS(0, _memSize);
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251
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252 byte encrypted[32];
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253 for(size_t addr = 0; addr < _memSize; addr += 0x10)
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254 {
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255 PROGRESS(addr, _memSize);
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256
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257 enc.encrypt(_buffer + addr, encrypted);
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258 out << qSetFieldWidth(1) << ":"
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259 << qSetFieldWidth(6) << bytes
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260 << qSetFieldWidth(2);
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261 for(int i=0; i<16; i++)
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262 out << encrypted[i];
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263 out << qSetFieldWidth(1) << "\n";
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264 bytes += 16;
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265 }
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266
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267 //---- Process data ------------------------------------------------------
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268 unsigned int sum = checksum(); // 33.29.BD.1D
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269 out << qSetFieldWidth(1) << ":"
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270 << qSetFieldWidth(6) << bytes
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271 << qSetFieldWidth(2)
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272 << ((sum ) & 0xff)
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273 << ((sum>> 8) & 0xff)
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274 << ((sum>>16) & 0xff)
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275 << ((sum>>24) & 0xff)
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276 << qSetFieldWidth(1) << "\n"
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277 ;
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278
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279 qDebug().nospace() << int( bytes/1024.0f) << "KB saved into "
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280 << fileName.section('/', -1);
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281
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282 PROGRESS_RESET();
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283 }
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284 #endif
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285
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286 ///////////////////////////////////////////////////////////////////////////////
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287
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288 void HexFile::loadEncrypted(const QString& fileName, unsigned char secretKey[16])
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289 {
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290 Q_ASSERT(_buffer);
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291
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292 _file.setFileName(fileName);
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293 if( ! _file.open(QIODevice::ReadOnly) )
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294 LOG_THROW( "Cannot open HEX file " << fileName );
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295
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296 //---- Read 128 bits of initialization vector ----------------------------
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297 Rijndael::CFB<128>::IV iv = {0};
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298
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299 unsigned int bytes = 0;
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300 bool ok = true;
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301 for(size_t i0 = 0; i0 < sizeof iv; i0+=0x10)
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302 {
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303 QByteArray line = _file.readLine();
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304 if( line[0] != ':' )
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305 LOG_THROW( "Bad HEX line" );
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306
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307 unsigned int readAddr = line.mid(1,6).toInt(&ok, 16);
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308 if( !ok || readAddr != bytes )
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309 LOG_THROW( "Bad HEX address" );
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310
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311 for(int i=0; i<0x10; i++)
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312 iv[i0+i] = line.mid(2*i+7,2).toInt(&ok, 16);
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313 if( !ok )
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314 LOG_THROW( "Bad HEX file format" );
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315
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316 bytes += 0x10;
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317 }
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318
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319 //---- Create stream decryptor -------------------------------------------
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320 Rijndael::CFB<128> dec(secretKey, iv);
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321
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322 //---- Process data ------------------------------------------------------
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323 PROGRESS(0, (int)_memSize);
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324
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325 Rijndael::Block encrypted;
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326 for(size_t addr = 0; addr < _memSize; addr += 0x10)
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327 {
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328 PROGRESS((int)addr, (int)_memSize);
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329
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330 QByteArray line = _file.readLine();
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331 if( line[0] != ':' )
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332 LOG_THROW( "Bad HEX line" );
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333
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334 unsigned int readAddr = line.mid(1,6).toInt(&ok, 16);
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335 if( !ok || readAddr != bytes )
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336 LOG_THROW( "Bad HEX address" );
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337
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338 for(int i=0; i<0x10; i++)
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339 encrypted[i] = line.mid(2*i+7,2).toInt(&ok, 16);
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340 if( !ok )
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341 LOG_THROW( "Bad HEX file format" );
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342 bytes += 0x10;
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343
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344 dec.decrypt(encrypted, *(Rijndael::Block*)(_buffer+addr));
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345 }
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346 QByteArray line = _file.readLine();
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347 if( bytes != (unsigned int)line.mid(1,6).toInt(&ok, 16) || !ok )
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348 LOG_THROW( "Bad HEX address" );
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349
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350 unsigned int sum = line.mid( 7,2).toInt(&ok, 16)
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351 + (line.mid( 9,2).toInt(&ok, 16) << 8 )
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352 + (line.mid(11,2).toInt(&ok, 16) << 16)
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353 + (line.mid(13,2).toInt(&ok, 16) << 24);
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354 if( sum != checksum() )
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355 LOG_THROW( "Bad HEX checksum" );
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356
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357 PROGRESS_RESET();
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358 }