author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:04:58 +0200 | |
changeset 0 | 1bce908db942 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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#include <es_sock.h> |
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#include "natfwunsafutils.h" |
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const TInt KBoundary = 4; |
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::WriteNetworkOrder16L |
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// ----------------------------------------------------------------------------- |
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// |
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void NATFWUNSAFUtils::WriteNetworkOrder16L(TDes8& aDes, TInt aOffset, |
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TUint16 aValue) |
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{ |
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__ASSERT_ALWAYS( |
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aDes.Length() >= aOffset + static_cast<TInt>(sizeof(aValue)), |
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User::Leave(KErrArgument)); |
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aDes[aOffset] = NATFWUNSAFUtils::HighByte(aValue); |
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aDes[aOffset + 1] = NATFWUNSAFUtils::LowByte(aValue); |
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} |
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::WriteNetworkOrder32L |
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// ----------------------------------------------------------------------------- |
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// |
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void NATFWUNSAFUtils::WriteNetworkOrder32L(TDes8& aDes, TInt aOffset, |
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TUint32 aValue) |
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{ |
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__ASSERT_ALWAYS( |
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aDes.Length() >= aOffset + static_cast<TInt>(sizeof(aValue)), |
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User::Leave(KErrArgument)); |
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WriteNetworkOrder16L(aDes, aOffset, NATFWUNSAFUtils::HighWord(aValue)); |
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WriteNetworkOrder16L(aDes, |
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aOffset + sizeof(TUint16), |
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NATFWUNSAFUtils::LowWord(aValue)); |
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} |
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::WriteNetworkOrder64L |
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// ----------------------------------------------------------------------------- |
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// |
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void NATFWUNSAFUtils::WriteNetworkOrder64L(TDes8& aDes, TInt aOffset, |
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TUint64 aValue) |
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{ |
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__ASSERT_ALWAYS( |
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aDes.Length() >= aOffset + static_cast<TInt>(sizeof(aValue)), |
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User::Leave(KErrArgument)); |
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WriteNetworkOrder32L(aDes, aOffset, NATFWUNSAFUtils::HighDWord(aValue)); |
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WriteNetworkOrder32L(aDes, |
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aOffset + sizeof(TUint32), |
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NATFWUNSAFUtils::LowDWord(aValue)); |
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} |
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::GetQuadWordL |
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// ----------------------------------------------------------------------------- |
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// |
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TUint64 NATFWUNSAFUtils::GetQuadWordL(const TUint8* aPtr) |
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{ |
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__ASSERT_ALWAYS( NULL != aPtr, User::Leave(KErrArgument)); |
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return MAKE_TUINT64(BigEndian::Get32(aPtr), |
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BigEndian::Get32(&aPtr[KBoundary])); |
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} |
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::IsQuotedPairChar |
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// ----------------------------------------------------------------------------- |
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// |
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TBool NATFWUNSAFUtils::IsQuotedPairChar(const TChar& aCharacter) |
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{ |
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if (aCharacter == '\n' || aCharacter == '\r') |
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{ |
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return EFalse; |
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} |
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return (TInt(aCharacter) <= 127); |
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} |
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::IsQdTextChar |
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// ----------------------------------------------------------------------------- |
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// |
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TBool NATFWUNSAFUtils::IsQdTextChar(const TChar& aCharacter) |
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{ |
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105 |
if (aCharacter == 33 || (aCharacter >= 35 && aCharacter <= 91) || |
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106 |
(aCharacter >= 93 && aCharacter <= 126)) |
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107 |
{ |
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108 |
return ETrue; |
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109 |
} |
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110 |
return EFalse; |
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111 |
} |
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112 |
|
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113 |
// ----------------------------------------------------------------------------- |
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114 |
// NATFWUNSAFUtils::StartsAndEndsWithQuotes |
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115 |
// ----------------------------------------------------------------------------- |
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116 |
// |
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117 |
TBool NATFWUNSAFUtils::StartsAndEndsWithQuotes(const TDesC8& aString) |
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118 |
{ |
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119 |
// trim and check quotes |
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120 |
TLex8 lex(aString); |
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121 |
lex.SkipSpace(); |
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122 |
TPtrC8 trimmedVal(lex.Remainder()); |
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123 |
const TInt KTwoQuotesLength = 2; |
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if (trimmedVal.Length() < KTwoQuotesLength) |
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125 |
{ |
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126 |
return EFalse; |
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127 |
} |
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128 |
if (trimmedVal.Locate('"') != 0) |
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129 |
{ |
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130 |
return EFalse; |
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131 |
} |
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132 |
if (trimmedVal.LocateReverse('"') != trimmedVal.Length()-1) |
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133 |
{ |
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134 |
return EFalse; |
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135 |
} |
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136 |
return ETrue; |
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137 |
} |
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138 |
|
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139 |
// ----------------------------------------------------------------------------- |
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140 |
// NATFWUNSAFUtils::IsQuotedString |
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141 |
// ----------------------------------------------------------------------------- |
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142 |
// |
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143 |
TBool NATFWUNSAFUtils::IsQuotedString(const TDesC8& aString) |
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144 |
{ |
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145 |
// trim and check quotes |
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146 |
TLex8 lex(aString); |
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147 |
lex.SkipSpace(); |
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148 |
TPtrC8 trimmedVal(lex.Remainder()); |
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149 |
if (!StartsAndEndsWithQuotes(trimmedVal)) |
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150 |
{ |
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151 |
return EFalse; |
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152 |
} |
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153 |
// remove quotes |
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154 |
TPtrC8 withoutFirstQuote(trimmedVal.Mid(1)); |
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155 |
TPtrC8 withoutQuotes(withoutFirstQuote.Left(withoutFirstQuote.Length()-1)); |
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156 |
// check value |
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157 |
return QuotedStringValue(withoutQuotes); |
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158 |
} |
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159 |
|
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160 |
// ----------------------------------------------------------------------------- |
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161 |
// NATFWUNSAFUtils::RealmValueFromQuotedStringL |
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162 |
// ----------------------------------------------------------------------------- |
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163 |
// |
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164 |
TPtrC8 NATFWUNSAFUtils::RealmValueFromQuotedStringL(const TDesC8& aString) |
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165 |
{ |
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166 |
// trim and check quotes |
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167 |
TLex8 lex(aString); |
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168 |
lex.SkipSpace(); |
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169 |
TPtrC8 trimmedVal(lex.Remainder()); |
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170 |
if (StartsAndEndsWithQuotes(trimmedVal)) |
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171 |
{ |
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172 |
// remove quotes |
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173 |
TPtrC8 withoutFirstQuote(trimmedVal.Mid(1)); |
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174 |
TPtrC8 withoutQuotes(withoutFirstQuote.Left( |
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175 |
withoutFirstQuote.Length()-1)); |
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176 |
if (!QuotedStringValue(withoutQuotes)) |
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177 |
{ |
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178 |
User::Leave(KErrArgument); |
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179 |
} |
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180 |
return withoutQuotes; |
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181 |
} |
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182 |
if (!QuotedStringValue(trimmedVal)) |
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183 |
{ |
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184 |
User::Leave(KErrArgument); |
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185 |
} |
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186 |
return trimmedVal; |
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187 |
} |
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188 |
|
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189 |
// ----------------------------------------------------------------------------- |
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190 |
// NATFWUNSAFUtils::QuotedStringValue |
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191 |
// ----------------------------------------------------------------------------- |
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192 |
// |
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193 |
TBool NATFWUNSAFUtils::QuotedStringValue(const TDesC8& aValue) |
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194 |
{ |
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195 |
TLex8 lex(aValue); |
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196 |
TChar chr = lex.Get(); |
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197 |
while (chr) |
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198 |
{ |
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199 |
TBool ok = ETrue; |
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200 |
if (IsUTF8NonAsciiStartChar(chr)) |
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201 |
{ |
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202 |
ok = SkipAndCheckNonAscii(chr,lex); |
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203 |
} |
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204 |
else if (chr == '\\') |
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205 |
{ |
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206 |
chr = lex.Get(); |
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207 |
ok = IsQuotedPairChar(chr); |
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208 |
} |
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209 |
else if (IsQdTextChar(chr) || chr == ' ' || chr == '\t') |
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210 |
{ |
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ok = ETrue; |
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} |
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else |
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{ |
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ok = EFalse; |
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} |
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if (!ok) |
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{ |
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return EFalse; |
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} |
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chr = lex.Get(); |
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} |
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return ETrue; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::SkipAndCheckNonAscii |
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// ----------------------------------------------------------------------------- |
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// |
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TBool NATFWUNSAFUtils::SkipAndCheckNonAscii(const TChar& aChr, TLex8& aLex) |
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{ |
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if (aChr >= 192 && aChr <= 253) |
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{ |
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if (aChr <= 223) |
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{ |
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return SkipAndCheckContChars(aLex,1); |
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} |
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else if (aChr <= 239) |
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{ |
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return SkipAndCheckContChars(aLex,2); |
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} |
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else if (aChr <= 247) |
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{ |
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return SkipAndCheckContChars(aLex,3); |
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} |
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else if (aChr <= 251) |
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{ |
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return SkipAndCheckContChars(aLex,4); |
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} |
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else |
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{ |
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return SkipAndCheckContChars(aLex,5); |
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} |
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} |
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return EFalse; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::IsUTF8NonAsciiStartChar |
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// ----------------------------------------------------------------------------- |
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// |
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TBool NATFWUNSAFUtils::IsUTF8NonAsciiStartChar(const TChar& aChar) |
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{ |
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if(aChar >= 192 && aChar <= 253) |
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{ |
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return ETrue; |
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} |
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return EFalse; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::SkipAndCheckContChars |
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// ----------------------------------------------------------------------------- |
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// |
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TBool NATFWUNSAFUtils::SkipAndCheckContChars(TLex8& aLex, TInt aCount) |
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{ |
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TInt counter = 0; |
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TChar chr = 0; |
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while (aCount > counter++) |
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{ |
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chr = aLex.Get(); |
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if (IsUTF8ContChar(chr)) |
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{ |
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return EFalse; |
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} |
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} |
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return ETrue; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// NATFWUNSAFUtils::IsUTF8ContChar |
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// ----------------------------------------------------------------------------- |
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// |
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TBool NATFWUNSAFUtils::IsUTF8ContChar(const TChar& aChar) |
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{ |
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return (aChar >= 128 && aChar <= 191); |
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} |
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298 |