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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: Implement the operation: GetPartialObject |
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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 #include <mtp/cmtptypefile.h> |
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20 #include <mtp/mmtpdataproviderframework.h> |
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21 #include <mtp/cmtpobjectmetadata.h> |
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22 |
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23 #include "cgetpartialobject.h" |
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24 #include "mmmtpdplogger.h" |
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25 #include "tmmmtpdppanic.h" |
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26 #include "ttypeflatbuf.h" |
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27 #include "mmmtpdpconfig.h" |
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28 |
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29 /** |
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30 * Verification data for the GetPartialObject request |
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31 */ |
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32 const TMTPRequestElementInfo KMTPGetPartialObjectPolicy[] = |
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33 { |
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34 {TMTPTypeRequest::ERequestParameter1, EMTPElementTypeObjectHandle, EMTPElementAttrFile, 0, 0, 0} |
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35 }; |
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36 |
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37 // ----------------------------------------------------------------------------- |
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38 // CGetPartialObject::NewL |
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39 // Two-phase construction method |
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40 // ----------------------------------------------------------------------------- |
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41 // |
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42 EXPORT_C MMmRequestProcessor* CGetPartialObject::NewL( MMTPDataProviderFramework& aFramework, |
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43 MMTPConnection& aConnection, |
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44 MMmMtpDpConfig& aDpConfig ) |
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45 { |
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46 CGetPartialObject* self = new (ELeave) CGetPartialObject( aFramework, aConnection ); |
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47 CleanupStack::PushL( self ); |
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48 self->ConstructL(); |
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49 CleanupStack::Pop( self ); |
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50 return self; |
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51 } |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // CGetPartialObject::~CGetPartialObject() |
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55 // Destructor |
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56 // ----------------------------------------------------------------------------- |
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57 // |
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58 EXPORT_C CGetPartialObject::~CGetPartialObject() |
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59 { |
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60 delete iBuffer; |
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61 delete iPartialData; |
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62 delete iFileObject; |
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63 } |
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64 |
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65 // ----------------------------------------------------------------------------- |
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66 // CGetPartialObject::CGetPartialObject |
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67 // Standard c++ constructor |
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68 // ----------------------------------------------------------------------------- |
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69 // |
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70 EXPORT_C CGetPartialObject::CGetPartialObject( MMTPDataProviderFramework& aFramework, |
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71 MMTPConnection& aConnection ) : |
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72 CRequestProcessor( aFramework, |
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73 aConnection, |
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74 sizeof( KMTPGetPartialObjectPolicy ) / sizeof( TMTPRequestElementInfo ), |
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75 KMTPGetPartialObjectPolicy ), |
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76 iFramework ( aFramework ), |
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77 iFs( iFramework.Fs() ), |
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78 iBufferPtr8( NULL, 0 ) |
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79 { |
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80 PRINT( _L( "Operation: GetPartialObject(0x101B)" ) ); |
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81 } |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // CGetPartialObject::CheckRequestL |
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85 // Check the GetPartialObject reqeust |
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86 // ----------------------------------------------------------------------------- |
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87 // |
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88 EXPORT_C TMTPResponseCode CGetPartialObject::CheckRequestL() |
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89 { |
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90 PRINT( _L( "MM MTP => CGetPartialObject::CheckRequestL" ) ); |
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91 TMTPResponseCode result = CRequestProcessor::CheckRequestL(); |
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92 if( result == EMTPRespCodeOK && !VerifyParametersL() ) |
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93 { |
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94 result = EMTPRespCodeInvalidParameter; |
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95 } |
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96 |
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97 PRINT1( _L( "MM MTP <= CGetPartialObject::CheckRequestL result = ox%x" ), result ); |
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98 return result; |
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99 } |
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100 |
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101 // ----------------------------------------------------------------------------- |
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102 // CGetPartialObject::VerifyParametersL |
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103 // Verify if the parameter of the request (i.e. offset) is good. |
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104 // ----------------------------------------------------------------------------- |
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105 // |
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106 TBool CGetPartialObject::VerifyParametersL() |
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107 { |
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108 PRINT( _L( "MM MTP => CGetPartialObject::VerifyParametersL" ) ); |
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109 __ASSERT_DEBUG( iRequestChecker, Panic( EMmMTPDpRequestCheckNull ) ); |
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110 TBool result = EFalse; |
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111 iObjectHandle = Request().Uint32( TMTPTypeRequest::ERequestParameter1 ); |
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112 PRINT1( _L( "MM MTP <> CGetPartialObject::VerifyParametersL iObjectHandle = 0x%x" ), iObjectHandle ); |
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113 iOffset = Request().Uint32( TMTPTypeRequest::ERequestParameter2 ); |
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114 PRINT1( _L( "MM MTP <> CGetPartialObject::VerifyParametersL iOffset = %d" ), iOffset ); |
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115 TUint32 maxLength = Request().Uint32( TMTPTypeRequest::ERequestParameter3 ); |
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116 PRINT1( _L( "MM MTP <> CGetPartialObject::VerifyParametersL maxLength = %d" ), maxLength ); |
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117 |
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118 //get object info, but do not have the ownship of the object |
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119 CMTPObjectMetaData* objectInfo = iRequestChecker->GetObjectInfo( iObjectHandle ); |
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120 __ASSERT_DEBUG( objectInfo, Panic( EMmMTPDpObjectNull ) ); |
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121 |
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122 const TDesC& suid( objectInfo->DesC( CMTPObjectMetaData::ESuid ) ); |
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123 PRINT1( _L( "MM MTP <> CGetPartialObject::VerifyParametersL suid = %S" ), &suid ); |
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124 |
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125 if ( objectInfo->Uint( CMTPObjectMetaData::EDataProviderId ) |
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126 == iFramework.DataProviderId() ) |
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127 result = ETrue; |
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128 |
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129 TEntry fileEntry; |
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130 User::LeaveIfError( iFs.Entry( suid, fileEntry ) ); |
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131 TInt64 fileSize = fileEntry.iSize; |
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132 if( ( iOffset < fileEntry.iSize ) && result ) |
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133 { |
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134 if ( maxLength == fileSize ) |
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135 { |
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136 iCompleteFile = ETrue; |
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137 } |
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138 |
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139 if( iOffset + maxLength > fileSize ) |
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140 { |
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141 maxLength = fileSize - iOffset; |
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142 } |
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143 iPartialDataLength = maxLength; |
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144 result = ETrue; |
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145 } |
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146 PRINT1( _L( "MM MTP <> CGetPartialObject::VerifyParametersL iPartialDataLength = %d" ), iPartialDataLength ); |
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147 |
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148 PRINT1( _L( "MM MTP <= CGetPartialObject::VerifyParametersL result = %d" ), result ); |
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149 return result; |
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150 } |
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151 |
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152 // ----------------------------------------------------------------------------- |
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153 // CGetPartialObject::ServiceL |
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154 // GetPartialObject request handler |
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155 // ----------------------------------------------------------------------------- |
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156 // |
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157 EXPORT_C void CGetPartialObject::ServiceL() |
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158 { |
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159 PRINT( _L( "MM MTP => CGetPartialObject::ServiceL" ) ); |
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160 // Get file information |
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161 CMTPObjectMetaData* objectInfo = iRequestChecker->GetObjectInfo( iObjectHandle ); |
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162 __ASSERT_DEBUG( objectInfo, Panic( EMmMTPDpObjectNull ) ); |
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163 iFileSuid.SetLength( 0 ); |
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164 iFileSuid.Append( objectInfo->DesC( CMTPObjectMetaData::ESuid ) ); |
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165 |
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166 if ( iCompleteFile ) |
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167 { |
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168 // Pass the complete file back to the host |
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169 delete iFileObject; |
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170 iFileObject = NULL; |
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171 iFileObject = CMTPTypeFile::NewL( iFramework.Fs(), iFileSuid, EFileRead ); |
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172 SendDataL( *iFileObject ); |
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173 } |
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174 else |
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175 { |
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176 // Send partial file fragment back. |
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177 BuildPartialDataL(); |
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178 delete iPartialData; |
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179 iPartialData = NULL; |
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180 iPartialData = new (ELeave) TMTPTypeFlatBuf( iBufferPtr8 ); |
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181 SendDataL( *iPartialData ); |
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182 } |
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183 PRINT( _L( "MM MTP <= CGetPartialObject::ServiceL" ) ); |
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184 } |
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185 |
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186 // ----------------------------------------------------------------------------- |
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187 // CGetPartialObject::DoHandleResponsePhaseL |
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188 // Signal to the initiator how much data has been sent |
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189 // ----------------------------------------------------------------------------- |
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190 // |
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191 EXPORT_C TBool CGetPartialObject::DoHandleResponsePhaseL() |
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192 { |
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193 PRINT( _L( "MM MTP => CGetPartialObject::DoHandleResponsePhaseL" ) ); |
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194 TUint32 dataLength = iPartialDataLength; |
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195 PRINT1( _L( "MM MTP <> CGetPartialObject::DoHandleResponsePhaseL dataLength = %d" ), dataLength ); |
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196 SendResponseL( EMTPRespCodeOK, 1, &dataLength ); |
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197 PRINT( _L( "MM MTP <= CGetPartialObject::DoHandleResponsePhaseL" ) ); |
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198 return EFalse; |
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199 } |
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200 |
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201 // ----------------------------------------------------------------------------- |
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202 // CGetPartialObject::ConstructL() |
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203 // Second-phase construction |
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204 // ----------------------------------------------------------------------------- |
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205 // |
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206 void CGetPartialObject::ConstructL() |
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207 { |
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208 SetPSStatus(); |
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209 } |
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210 |
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211 // ----------------------------------------------------------------------------- |
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212 // CGetPartialObject::BuildPartialDataL() |
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213 // Populate the partial data object |
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214 // ----------------------------------------------------------------------------- |
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215 // |
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216 void CGetPartialObject::BuildPartialDataL() |
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217 { |
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218 PRINT( _L( "MM MTP => CGetPartialObject::BuildPartialDataL" ) ); |
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219 __ASSERT_DEBUG( iRequestChecker, Panic( EMmMTPDpRequestCheckNull ) ); |
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220 |
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221 if ( iBuffer ) |
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222 { |
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223 delete iBuffer; |
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224 iBuffer = NULL; |
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225 } |
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226 |
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227 // We might fail if we have insufficient memory... |
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228 iBuffer = HBufC8::NewL( iPartialDataLength ); |
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229 iBuffer->Des().Zero(); |
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230 iBufferPtr8.Set( iBuffer->Des() ); |
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231 |
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232 RFile file; |
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233 User::LeaveIfError( file.Open( iFs, iFileSuid, EFileRead ) ); |
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234 CleanupClosePushL( file ); // + file |
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235 User::LeaveIfError( file.Read( iOffset, iBufferPtr8, iPartialDataLength ) ); |
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236 CleanupStack::PopAndDestroy( &file ); // - file |
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237 PRINT( _L( "MM MTP <= CGetPartialObject::BuildPartialDataL" ) ); |
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238 } |
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239 |
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240 // end of file |