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1 /* |
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2 * Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * Example CTestStep derived implementation |
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16 * |
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17 */ |
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18 |
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19 |
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20 /** |
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21 @file |
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22 @internalTechnology |
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23 */ |
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24 #include "hashincrementalhashwithresetstep.h" |
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25 |
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26 #include <cryptospi/cryptohashapi.h> |
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27 #include <cryptospi/plugincharacteristics.h> |
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28 |
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29 using namespace CryptoSpi; |
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30 |
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31 CHashIncrementalHashWithResetStep::~CHashIncrementalHashWithResetStep() |
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32 { |
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33 } |
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34 |
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35 |
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36 CHashIncrementalHashWithResetStep::CHashIncrementalHashWithResetStep() |
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37 { |
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38 SetTestStepName(KHashIncrementalHashWithResetStep); |
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39 } |
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40 |
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41 |
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42 TVerdict CHashIncrementalHashWithResetStep::doTestStepPreambleL() |
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43 { |
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44 SetTestStepResult(EPass); |
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45 return TestStepResult(); |
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46 } |
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47 |
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48 |
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49 TVerdict CHashIncrementalHashWithResetStep::doTestStepL() |
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50 { |
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51 if (TestStepResult()==EPass) |
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52 { |
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53 |
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54 //Assume faliure, unless all is successful |
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55 SetTestStepResult(EFail); |
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56 |
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57 INFO_PRINTF1(_L("*** Hash - Incremental Hash with Reset ***")); |
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58 INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells()); |
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59 |
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60 TVariantPtrC algorithmUid; |
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61 TVariantPtrC operationModeUid; |
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62 TPtrC sourcePath; |
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63 TPtrC expectedHash; |
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64 |
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65 //Extract the Test Case ID parameter from the specified INI file |
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66 if(!GetStringFromConfig(ConfigSection(),KConfigAlgorithmUid,algorithmUid) || |
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67 !GetStringFromConfig(ConfigSection(),KConfigOperationMode,operationModeUid) || |
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68 !GetStringFromConfig(ConfigSection(),KConfigSourcePath,sourcePath) || |
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69 !GetStringFromConfig(ConfigSection(),KConfigExHashHmacValue,expectedHash)) |
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70 { |
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71 ERR_PRINTF1(_L("** Error: Failed to Load Configuration Parameters **")); |
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72 SetTestStepResult(EFail); |
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73 } |
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74 else |
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75 { |
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76 //Create a pointer for the Hash Implementation Object |
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77 CHash* hashImpl = NULL; |
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78 |
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79 //Retrieve a Hash Factory Object |
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80 TRAPD(err,CHashFactory::CreateHashL(hashImpl, |
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81 algorithmUid, |
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82 operationModeUid, |
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83 NULL, |
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84 NULL)); |
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85 |
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86 if(hashImpl && (err == KErrNone)) |
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87 { |
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88 |
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89 //Push the Hash Implementation Object onto the Cleanup Stack |
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90 CleanupStack::PushL(hashImpl); |
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91 |
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92 RFs fsSession; |
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93 |
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94 //Create a connection to the file server |
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95 err = fsSession.Connect(); |
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96 |
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97 if(err != KErrNone) |
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98 { |
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99 ERR_PRINTF2(_L("*** Error: File Server Connection - %d ***"), err); |
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100 SetTestStepResult(EFail); |
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101 } |
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102 else |
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103 { |
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104 RFile sourceFile; |
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105 CleanupClosePushL(sourceFile); |
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106 |
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107 //Open the specified source file |
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108 err = sourceFile.Open(fsSession,sourcePath, EFileRead); |
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109 |
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110 if(err != KErrNone) |
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111 { |
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112 ERR_PRINTF2(_L("*** Error: Opening Source File - %d ***"), err); |
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113 SetTestStepResult(EFail); |
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114 } |
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115 else |
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116 { |
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117 |
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118 TInt sourceLength = 0; |
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119 TInt readPosition = 0; |
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120 TInt readIncrement = 0; |
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121 TBool hashComplete = EFalse; |
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122 TBool hashReset = EFalse; |
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123 TPtrC8 hashStr; |
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124 |
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125 User::LeaveIfError(sourceFile.Size(sourceLength)); |
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126 |
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127 //Divide the file size into seperate incremental blocks to read |
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128 readIncrement = sourceLength/KDataReadBlocks; |
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129 |
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130 do |
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131 { |
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132 //Create a heap based descriptor to store the data |
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133 HBufC8* sourceData = HBufC8::NewL(readIncrement); |
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134 CleanupStack::PushL(sourceData); |
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135 TPtr8 sourcePtr = sourceData->Des(); |
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136 |
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137 //Read in a block of data from the source file from the current position |
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138 err = sourceFile.Read(readPosition,sourcePtr,readIncrement); |
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139 |
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140 //Update the read position by adding the number of bytes read |
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141 readPosition += readIncrement; |
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142 |
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143 if(readPosition == readIncrement) |
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144 { |
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145 //Read in the first block from the data file into the Hash implementation object |
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146 hashImpl->Hash(*sourceData); |
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147 INFO_PRINTF2(_L("Intial Hash - Bytes Read: %d"), readPosition); |
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148 } |
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149 else if(readPosition >= sourceLength) |
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150 { |
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151 //Reading in the final block, constructs the complete hash value and returns it within a TPtrC8 |
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152 hashStr.Set(hashImpl->Final(*sourceData)); |
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153 |
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154 //Sets the Complete Flag to ETrue in order to drop out of the loop |
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155 hashComplete = ETrue; |
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156 |
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157 TInt totalRead = (readPosition - readIncrement) + (*sourceData).Length(); |
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158 INFO_PRINTF2(_L("Final Hash - Bytes Read: %d"),totalRead); |
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159 } |
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160 //If the read position is half the source length and the implementation |
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161 //object hasn't already been reset |
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162 else if((readPosition >= sourceLength/2) && (hashReset == EFalse)) |
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163 { |
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164 INFO_PRINTF1(_L("Resetting Hash Object...")); |
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165 |
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166 hashImpl->Reset(); |
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167 |
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168 //Sets the read position back to 0 inorder to restart the file read from the beginning |
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169 readPosition = 0; |
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170 |
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171 hashReset = ETrue; |
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172 |
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173 INFO_PRINTF2(_L("*** HASH RESET - Bytes Read: %d ***"), readPosition); |
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174 } |
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175 else |
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176 { |
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177 //Update the message data within the Hash object with the new block |
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178 hashImpl->Update(*sourceData); |
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179 INFO_PRINTF2(_L("Hash Update - Bytes Read: %d"), readPosition); |
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180 } |
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181 |
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182 CleanupStack::PopAndDestroy(sourceData); |
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183 |
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184 }while(hashComplete == EFalse); |
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185 |
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186 //Create a NULL TCharacteristics pointer |
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187 const TCharacteristics* charsPtr(NULL); |
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188 |
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189 //Retrieve the characteristics for the hash implementation object |
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190 TRAP_LOG(err, hashImpl->GetCharacteristicsL(charsPtr)); |
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191 |
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192 //Static cast the characteristics to type THashCharacteristics |
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193 const THashCharacteristics* hashCharsPtr = static_cast<const THashCharacteristics*>(charsPtr); |
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194 |
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195 //The hash output size is returned in Bits, divide by 8 to get the Byte size |
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196 TInt hashSize = hashCharsPtr->iOutputSize/8; |
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197 |
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198 //Retrieve the final 8bit hash value and convert to 16bit |
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199 HBufC* hashData = HBufC::NewLC(hashSize); |
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200 TPtr hashPtr = hashData->Des(); |
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201 |
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202 //Copy the hashed content into the heap based descriptor |
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203 hashPtr.Copy(hashStr); |
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204 |
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205 //Take the 16bit descriptor and convert the string to hexadecimal |
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206 TVariantPtrC convertHash; |
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207 convertHash.Set(hashPtr); |
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208 HBufC* hashResult = convertHash.HexStringLC(); |
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209 |
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210 INFO_PRINTF2(_L("*** Hashed Data: %S ***"),&*hashResult); |
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211 INFO_PRINTF2(_L("*** Expected Hash: %S ***"),&expectedHash); |
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212 |
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213 //If the returned hash value matches the expected hash, Pass the test |
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214 if(*hashResult == expectedHash) |
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215 { |
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216 INFO_PRINTF1(_L("*** Hash - Incremental Hash with Reset : PASS ***")); |
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217 SetTestStepResult(EPass); |
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218 } |
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219 else |
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220 { |
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221 ERR_PRINTF2(_L("*** FAIL: Hashed and Expected Value Mismatch ***"), err); |
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222 SetTestStepResult(EFail); |
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223 } |
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224 |
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225 CleanupStack::PopAndDestroy(hashResult); |
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226 CleanupStack::PopAndDestroy(hashData); |
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227 } |
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228 |
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229 //Cleanup the Source RFile |
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230 CleanupStack::PopAndDestroy(); |
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231 } |
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232 |
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233 fsSession.Close(); |
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234 |
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235 CleanupStack::PopAndDestroy(hashImpl); |
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236 } |
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237 else |
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238 { |
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239 ERR_PRINTF2(_L("*** FAIL: Failed to Create Hash Object - %d ***"), err); |
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240 SetTestStepResult(EFail); |
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241 } |
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242 } |
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243 } |
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244 |
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245 INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells()); |
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246 return TestStepResult(); |
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247 } |
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248 |
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249 |
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250 TVerdict CHashIncrementalHashWithResetStep::doTestStepPostambleL() |
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251 { |
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252 |
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253 return TestStepResult(); |
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254 } |