1 /* |
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2 * Copyright (c) 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 "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: UDP protocol implementation for IP proxy |
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15 * |
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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 // INCLUDE FILES |
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21 #include "CProtocolUDP.h" |
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22 #include "CExprUDPMsg.h" |
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23 #include "MSocketWriter.h" |
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24 #include "MProtocolObserverUDP.h" |
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25 #include "CommRouterDefinitions.h" |
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26 |
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27 #define DEBUG_FILENAME "IPProxyEngine.log" |
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28 #include "DebugPrint.h" |
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29 |
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30 |
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31 // ============================ MEMBER FUNCTIONS =============================== |
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32 |
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33 // ----------------------------------------------------------------------------- |
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34 // CProtocolUDP::CProtocolUDP |
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35 // ----------------------------------------------------------------------------- |
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36 // |
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37 CProtocolUDP::CProtocolUDP( MProtocolObserverUDP* aObserver ) |
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38 : iObserver( aObserver ) |
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39 { |
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40 __ASSERT_DEBUG( iObserver, User::Invariant() ); |
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41 } |
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42 |
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43 // ----------------------------------------------------------------------------- |
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44 // CProtocolUDP::ConstructL |
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45 // ----------------------------------------------------------------------------- |
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46 // |
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47 void CProtocolUDP::ConstructL() |
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48 { |
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49 // Add all the expressions for UDP |
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50 iExpressionArray = new (ELeave) CArrayPtrFlat<MBPExpression> ( 3 ); |
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51 |
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52 CExprUDPMsg* UDPMsg = CExprUDPMsg::NewL( this ); |
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53 iExpressionArray->AppendL( UDPMsg ); |
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54 } |
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55 |
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56 // ----------------------------------------------------------------------------- |
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57 // CProtocolUDP::NewL |
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58 // ----------------------------------------------------------------------------- |
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59 // |
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60 CProtocolUDP* CProtocolUDP::NewL( MProtocolObserverUDP* aObserver ) |
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61 { |
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62 CProtocolUDP* self = CProtocolUDP::NewLC( aObserver ); |
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63 CleanupStack::Pop(); |
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64 |
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65 return self; |
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66 } |
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67 |
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68 // ----------------------------------------------------------------------------- |
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69 // CProtocolUDP::NewLC |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 CProtocolUDP* CProtocolUDP::NewLC( MProtocolObserverUDP* aObserver ) |
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73 { |
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74 CProtocolUDP* self = new( ELeave ) CProtocolUDP( aObserver ); |
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75 CleanupStack::PushL( self ); |
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76 |
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77 self->ConstructL(); |
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78 return self; |
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79 } |
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80 |
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81 |
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82 // ----------------------------------------------------------------------------- |
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83 // CProtocolUDP::~CProtocolUDP |
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84 // ----------------------------------------------------------------------------- |
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85 // |
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86 CProtocolUDP::~CProtocolUDP() |
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87 { |
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88 if ( iExpressionArray ) |
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89 { |
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90 iExpressionArray->ResetAndDestroy(); |
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91 delete iExpressionArray; |
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92 } |
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93 } |
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94 |
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95 // ----------------------------------------------------------------------------- |
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96 // CProtocolUDP::FrameStarted |
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97 // ----------------------------------------------------------------------------- |
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98 // |
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99 void CProtocolUDP::FrameStarted() |
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100 { |
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101 iObserver->FrameStarted(); |
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102 } |
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103 |
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104 // ----------------------------------------------------------------------------- |
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105 // CProtocolUDP::FrameParsedL |
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106 // ----------------------------------------------------------------------------- |
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107 // |
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108 void CProtocolUDP::FrameParsedL( TUint aPort, const TDesC8& aData ) |
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109 { |
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110 iObserver->UDPFrameParsedL( aPort, aData ); |
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111 } |
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112 |
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113 // ----------------------------------------------------------------------------- |
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114 // CProtocolUDP::ProtocolErrorL |
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115 // ----------------------------------------------------------------------------- |
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116 // |
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117 void CProtocolUDP::ProtocolErrorL( |
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118 TInt aErrorCode, const TDesC8& aReceivedData ) |
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119 { |
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120 iObserver->ProtocolErrorL( aErrorCode, aReceivedData ); |
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121 } |
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122 |
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123 |
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124 // ----------------------------------------------------------------------------- |
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125 // CProtocolUDP::WriteFrameL |
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126 // ----------------------------------------------------------------------------- |
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127 // |
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128 void CProtocolUDP::WriteFrameL( MSocketWriter& aSocketWriter, |
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129 TUint aPeerPort, TUint aOriginalPort, const TDesC8& aData ) const |
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130 { |
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131 DEBUG_PRINT( DEBUG_STRING( |
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132 "CProtocolUDP::WriteFrameL(), peer port=%d, original port=%d" ), |
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133 aPeerPort, aOriginalPort ); |
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134 |
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135 TInt bufSize = 0; |
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136 bufSize += KUDPPrefix().Length(); |
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137 bufSize += KHexDecimalLength; |
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138 bufSize += KPortSuffix().Length(); |
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139 bufSize += KHexDecimalLength; |
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140 bufSize += KLengthSuffix().Length(); |
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141 bufSize += aData.Length(); |
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142 bufSize += KDataSuffix().Length(); |
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143 bufSize += KMessageSuffix().Length(); |
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144 |
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145 TBuf8<KHexDecimalLength> hexbuf; |
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146 HBufC8* buf = HBufC8::NewLC( bufSize ); |
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147 TPtr8 ptr( buf->Des() ); |
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148 |
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149 // Append UDP prefix |
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150 ptr.Append( KUDPPrefix ); |
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151 |
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152 // Append peer port |
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153 hexbuf.Format( KHexFormat, aPeerPort ); |
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154 ptr.Append( hexbuf ); |
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155 ptr.Append( KPortSuffix ); |
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156 |
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157 // Append data length |
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158 hexbuf.Format( KHexFormat, aData.Length() ); |
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159 ptr.Append( hexbuf ); |
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160 ptr.Append( KLengthSuffix ); |
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161 |
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162 // Append data |
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163 ptr.Append( aData ); |
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164 ptr.Append( KDataSuffix ); |
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165 ptr.Append( KMessageSuffix ); |
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166 |
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167 // Write to socket |
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168 aSocketWriter.WriteL( *buf ); |
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169 |
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170 CleanupStack::PopAndDestroy( buf ); |
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171 } |
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172 |
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173 // ----------------------------------------------------------------------------- |
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174 // CProtocolUDP::HandleReceivedDataL |
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175 // ----------------------------------------------------------------------------- |
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176 // |
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177 TBool CProtocolUDP::HandleReceivedDataL( TDes8& aData, TInt& aStartPos, |
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178 TInt& aLength ) |
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179 { |
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180 TBool msgHandled = EFalse; |
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181 TInt protCount = iExpressionArray->Count(); |
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182 |
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183 for ( TInt i = 0; i < protCount; i++ ) |
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184 { |
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185 msgHandled = iExpressionArray->At( i )->HandleRecievedMsgL( aData, |
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186 aStartPos, |
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187 aLength); |
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188 if ( msgHandled ) |
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189 { |
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190 break; |
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191 } |
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192 } |
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193 |
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194 return msgHandled; |
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195 } |
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196 // End of File |
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