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1 /* |
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2 * Copyright (c) 2003 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: Interface for the DRM Rights database |
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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 #ifndef DRMRIGHTSDB_H |
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20 #define DRMRIGHTSDB_H |
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21 |
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22 // INCLUDES |
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23 |
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24 #include <e32base.h> |
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25 #include <s32mem.h> |
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26 #include "DRMBackupInterface.h" |
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27 #include "DRMTypes.h" |
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28 |
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29 // CONSTANTS |
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30 |
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31 // Directory for temp files |
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32 _LIT( KDRMDbTempPath, "c:\\system\\temp\\" ); |
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33 |
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34 // The primary database temp file |
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35 _LIT( KDRMDbTempFileName, "c:\\private\\101F51F2\\RightsServer.tmp" ); |
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36 |
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37 // These are internally defined in the DRM Authenticated API |
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38 // If they change they should be also changed here |
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39 _LIT8( KFLKString, "flk:" ); |
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40 LOCAL_C const TInt KFLKStringLength = 4; |
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41 |
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42 _LIT8( KCIDString, "cid:" ); |
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43 LOCAL_C const TInt KCIDStringLength = 4; |
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44 |
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45 |
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46 // MACROS |
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47 |
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48 // DATA TYPES |
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49 |
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50 // FORWARD DECLARATIONS |
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51 class CDRMPermission; |
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52 class RFs; |
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53 class CMD5; |
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54 class RReadStream; |
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55 class RWriteStream; |
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56 class CLogFile; |
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57 class CDRMRightsCleaner; |
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58 class CDRMRightsServer; |
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59 class CDcfRep; |
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60 |
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61 // FUNCTION PROTOTYPES |
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62 |
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63 // CLASS DECLARATION |
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64 |
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65 /** |
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66 * CDRMRightsDB implements the rights database required by DRM Engine |
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67 * |
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68 * @lib RightsServer.dll |
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69 * @since 2.5 |
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70 */ |
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71 |
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72 NONSHARABLE_CLASS( CDRMRightsDB ) : public CBase , |
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73 public MDRMBackupInterface |
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74 { |
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75 public: // Constructors and destructor |
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76 |
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77 /** |
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78 * NewLC |
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79 * |
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80 * Creates an instance of the CDRMRightDB class and returns a pointer |
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81 * to it The function leaves the object into the cleanup stack |
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82 * |
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83 * @since 3.0 |
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84 * @param aFs : Open file server session |
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85 * @param aDatabasePath : full pathname of the database path |
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86 * @param aKey : content encryption key 16 bytes in length. |
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87 * @param aImei: device serial number (used for UDT) |
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88 * @return Functional CDRMRightsDB object, Function leaves if an error |
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89 * occurs. |
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90 */ |
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91 static CDRMRightsDB* NewLC( RFs& aFs, |
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92 const TDesC& aDatabasePath, |
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93 const TDesC8& aKey, |
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94 const TDesC& aImei ); |
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95 |
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96 /** |
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97 * NewL |
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98 * |
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99 * Creates an instance of the CDRMRightDB class and returns a pointer |
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100 * to it |
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101 * |
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102 * @since 3.0 |
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103 * @param aFs : Open file server session |
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104 * @param aDatabasePath : full pathname of the database path |
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105 * @param aKey : content encryption key 16 bytes in length. |
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106 * @param aImei: device serial number (used for UDT) |
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107 * @return Functional CDRMRightsDB object, Function leaves if an error |
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108 * occurs. |
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109 */ |
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110 static CDRMRightsDB* NewL( RFs& aFs, |
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111 const TDesC& aDatabasePath, |
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112 const TDesC8& aKey, |
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113 const TDesC& aImei ); |
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114 |
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115 /** |
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116 * Destructor |
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117 */ |
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118 virtual ~CDRMRightsDB(); |
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119 |
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120 public: // New functions |
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121 |
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122 /** |
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123 * GetDBEntryByContentIDL |
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124 * |
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125 * Gets all rights objects connected to aContentID and inserts them into |
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126 * the pointer array aRightsList |
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127 * |
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128 * @since 2.5 |
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129 * @param aContentID : content identifier |
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130 * @param aRightsList : pointer array of the rights object to be filled |
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131 * @return none , Function leaves if an error occurs |
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132 */ |
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133 void GetDBEntryByContentIDL( const TDesC8& aContentID, |
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134 RPointerArray<CDRMPermission>& aRightsList); |
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135 |
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136 /** |
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137 * GetDBEntryByContentIDL |
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138 * |
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139 * Gets the rights object connected to aContentID with the unique |
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140 * identifier aUniqueID and returns a pointer to it, caller must free |
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141 * the memory of the pointer |
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142 * |
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143 * @since 2.5 |
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144 * @param aContentID : content identifier |
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145 * @param aUniqueID : unique identifier of the rights object |
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146 * @return CDRMPermission pointer, Function leaves if an error occurs |
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147 */ |
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148 CDRMPermission* GetDBEntryByContentIDL( const TDesC8& aContentID, |
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149 const TDRMUniqueID aUniqueID ); |
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150 |
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151 /** |
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152 * AddDBEntryL |
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153 * |
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154 * Adds a new entry to the database connected with aContentID. |
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155 * |
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156 * @since 2.5 |
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157 * @param aContentID : content identifier |
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158 * @param aRightsObject : the rights object to be added, all fields but |
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159 * the unique identifier must be set that need to |
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160 * be set |
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161 * @param aEncryptionKey : the 16 byte key used to decrypt content |
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162 * @param aUniqueID : the unique id of the added rights object, in/out |
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163 * parameter The function will try to use aUniqueID |
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164 * as the unique id if it is not possible or |
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165 * aUniqueID is 0 a new random unique id will be |
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166 * generated |
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167 * @return None, Function leaves if an error occurs |
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168 */ |
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169 void AddDBEntryL( const TDesC8& aContentID, |
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170 CDRMPermission& aRightsObject, |
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171 const TDesC8& aEncryptionKey, |
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172 TDRMUniqueID& aUniqueID ); |
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173 |
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174 /** |
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175 * DeleteDBEntryL |
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176 * |
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177 * Deletes an entry from the database connected to aContentID with unique |
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178 * identifier aUniqueID |
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179 * |
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180 * @since 2.5 |
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181 * @param aContentID : content identifier |
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182 * @param aUniqueID : unique identifier of the rights object |
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183 * @return None, Function leaves if an error occurs |
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184 */ |
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185 void DeleteDBEntryL( const TDesC8& aContentID, |
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186 const TDRMUniqueID aUniqueID ); |
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187 |
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188 /** |
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189 * DeleteDBEntryL |
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190 * |
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191 * Deletes all entries from the database connected to aContentID |
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192 * |
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193 * @since 2.5 |
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194 * @param aContentID : content identifier |
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195 * @return None, Function leaves if an error occurs |
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196 */ |
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197 void DeleteDBEntryL( const TDesC8& aContentID ); |
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198 |
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199 /** |
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200 * UpdateDBEntryL |
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201 * |
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202 * Updates an entry from the database connected to aContentID with |
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203 * unique identifier aUniqueID |
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204 * |
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205 * @since 2.5 |
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206 * @param aContentID : content identifier |
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207 * @param aRightsObject : the updated rights object |
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208 * @return None, Function leaves if an error occurs |
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209 */ |
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210 void UpdateDBEntryL( const TDesC8& aContentID, |
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211 const CDRMPermission& aRightsObject); |
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212 |
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213 /** |
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214 * ExportContentIDListL |
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215 * |
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216 * Exports a list of content id:s to a file |
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217 * |
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218 * @since 2.5 |
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219 * @param aTempFile : return param full pathname of the temporary file |
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220 * to use |
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221 * @return None, Function leaves if an error occurs |
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222 */ |
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223 void ExportContentIDListL( TFileName& aTempFile ); |
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224 |
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225 /** |
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226 * BackupDBL |
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227 * |
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228 * Backups the database to aBackupDBFile and creates the warranty |
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229 * transfer file aWTFile and encrypts it with the aKey |
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230 * |
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231 * @since 2.5 |
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232 * @param aWTFile : full pathname of the warranty transfer file |
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233 * @param aEncryptionKey : 16 byte encryption key |
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234 * @return None, Function leaves if an error occurs |
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235 */ |
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236 /* void BackupDBL( const TDesC& aWTFile, |
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237 const TDesC8& aEncryptionKey ); |
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238 */ |
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239 /** |
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240 * MergeDBL |
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241 * |
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242 * Merges the backup database into the current database |
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243 * |
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244 * @since 2.5 |
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245 * @return None, Function leaves if an error occurs |
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246 */ |
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247 // void MergeDBL(); |
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248 |
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249 /** |
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250 * GetDecryptionKey |
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251 * |
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252 * Returns the decryption key for rights object connected to aContentID |
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253 * |
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254 * @since 2.5 |
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255 * @param aContentID content ID |
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256 * @return HBufC8 pointer or NULL if failed |
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257 */ |
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258 HBufC8* GetDecryptionKeyL( const TDesC8& aContentID ); |
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259 |
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260 /** |
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261 * DeleteDBL |
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262 * |
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263 * Deletes the rights database file and creates an empty file in it's |
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264 * place |
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265 * |
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266 * @since 2.5 |
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267 * @return can leave with a symbian error code |
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268 */ |
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269 void DeleteDBL( void ); |
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270 |
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271 /** |
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272 * GetAmountOfRightsObjects |
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273 * |
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274 * Returns the amount of unique content id's from in the rights database |
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275 * |
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276 * @since 2.5 |
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277 * @return the amount of rights objects in the database |
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278 */ |
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279 TInt32 GetAmountOfRightsObjectsL(); |
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280 |
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281 |
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282 /** |
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283 * AddDomainROL |
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284 * |
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285 * Adds a domain rights object just the XML representation |
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286 * |
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287 * @since 3.0 |
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288 * @param aRoId : The Rights object identifier of the RO |
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289 * @param aXmlData : The Xml data to be saved |
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290 * @return can leave with symbian on error code |
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291 */ |
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292 void AddDomainROL( const TDesC8& aRoId, const TDesC8& aXmlData ); |
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293 |
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294 /** |
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295 * GetDomainROL |
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296 * |
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297 * Gets a domain rights object just the XML representation |
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298 * |
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299 * @since 3.0 |
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300 * @param aRoId : The Rights object identifier of the RO |
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301 * @return Domain RO Xml representation or NULL |
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302 * can leave with symbian on error code |
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303 */ |
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304 HBufC8* GetDomainROL( const TDesC8& aRoId ); |
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305 |
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306 /** |
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307 * DeleteDomainROL |
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308 * |
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309 * Deletes a domain rights objects XML representation |
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310 * |
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311 * @since 3.0 |
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312 * @param aRoId : The Rights object identifier of the RO |
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313 * @return can leave with symbian on error code |
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314 */ |
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315 void DeleteDomainROL( const TDesC8& aRoId ); |
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316 |
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317 /** |
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318 * DeleteExpiredPermissionsL |
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319 * |
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320 * Delete expired permissions. |
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321 * |
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322 * @since 3.0 |
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323 * @param aTime : current time |
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324 * @param aStatus : request status for the asynchronous requrest |
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325 * @return CDRMRightsCleaner object which is used to control the |
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326 * expired permissions deletion process |
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327 */ |
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328 CDRMRightsCleaner* DeleteExpiredPermissionsL( const TTime& aTime, |
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329 TRequestStatus& aStatus ); |
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330 |
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331 /** |
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332 * NameContentL |
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333 * |
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334 * Give a name to the content, if the name is empty the content name |
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335 * will be cleared |
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336 * |
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337 * @since 3.0 |
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338 * @param aContentId : content identifier |
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339 * @param aName : the name for the content |
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340 * @return None |
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341 * @leave Leaves with KErrNotFound if the content doesn't exist |
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342 */ |
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343 void NameContentL( const TDesC8& aContentId, |
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344 const TDesC& aName ); |
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345 |
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346 /** |
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347 * ContentNameL |
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348 * |
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349 * Returns a pointer to the name of the content and leaves it in the |
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350 * cleanup stack |
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351 * |
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352 * @since 3.0 |
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353 * @param aContentId : content identifier |
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354 * @return the name of the content in a HBufC* |
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355 * @leave Leaves with KErrNotFound if the content doesn't exist |
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356 */ |
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357 HBufC* ContentNameLC( const TDesC8& aContentID ); |
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358 |
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359 /** |
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360 * DeleteExpiredL |
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361 * |
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362 * Delete expired from the current file store |
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363 * |
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364 * @since 3.0 |
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365 * @param aFileName : name of the permission file store |
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366 * @param aTime : current time. |
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367 * @return TBool : ETrue if the file can be deleted |
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368 * EFalse if the file can't be deleted |
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369 */ |
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370 TBool DeleteExpiredL( const TFileName& aFileName, |
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371 const TTime& aTime ); |
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372 |
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373 /** |
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374 * GetUdtDataL |
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375 * |
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376 * Gets the udt data from a restore file if it exists |
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377 * if not it leaves with KErrNotFound |
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378 * |
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379 * @since 3.0 |
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380 * @param aStream : the stream to write to |
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381 * @return HBufC8* with the UDT data encrypted with the udt public key |
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382 * @leave Can leave with a Symbian OS error code |
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383 */ |
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384 HBufC8* GetUdtDataLC(); |
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385 |
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386 /** |
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387 * InitiateUdtL |
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388 * |
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389 * Initiates the User Data Transfer |
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390 * |
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391 * @since 3.0 |
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392 * @param aKey : the key used to encrypt the data encrypted with |
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393 * the device public key |
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394 * @return none |
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395 * @leave Can leave with a Symbian OS error code |
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396 */ |
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397 void InitiateUdtL( const TDesC8& aKey ); |
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398 |
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399 /** |
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400 * CleanUdtData |
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401 * |
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402 * Deletes the restore file if it exists |
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403 * |
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404 * @since 3.0 |
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405 * @return None |
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406 */ |
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407 void CleanUdtData(); |
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408 |
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409 /** |
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410 * GetContentIDListL |
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411 * |
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412 * Get a list of all the content id's in the database |
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413 * |
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414 * @since 2.5 |
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415 * @param aArray : The pointer array has all the content id's |
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416 * that have been added to the rights database |
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417 * @return None, Function leaves if an error occurs |
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418 */ |
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419 void GetContentIDListL( RPointerArray<HBufC8>& aArray ); |
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420 |
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421 /** |
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422 * SetAuthenticationSeedL |
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423 * |
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424 * Set the authentication seed for a content ID |
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425 * |
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426 * @since 3.0 |
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427 * @param aContentId : content identifier |
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428 * @param aSeed : value for the seed |
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429 * @return None |
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430 * @leave Leaves with KErrNotFound if the content doesn't exist |
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431 */ |
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432 void SetAuthenticationSeedL( const TDesC8& aContentId, |
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433 const TDesC8& aSeed ); |
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434 |
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435 /** |
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436 * GetAuthenticationSeedL |
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437 * |
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438 * Get the authentication seed for a content ID |
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439 * |
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440 * @since 3.0 |
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441 * @param aContentId : content identifier |
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442 * @return value for the seed |
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443 * @leave Leaves with KErrNotFound if the content doesn't exist |
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444 */ |
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445 HBufC8* GetAuthenticationSeedL( const TDesC8& aContentID ); |
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446 |
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447 // test function |
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448 void CreateDummyUDTFileL(); |
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449 |
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450 public: // Inherited from MDRMBackupInterface |
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451 |
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452 /** |
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453 * BackupContentToFileL |
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454 * |
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455 * Backups content to file in encrypted format |
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456 * |
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457 * @since 3.0 |
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458 * @param aBackupFile : File handle to the backup file |
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459 * @param aEncryptionKey : the key to use to encrypt the backup file |
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460 * @leave Symbian OS error code if an error occurs |
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461 */ |
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462 virtual void BackupContentToFileL( RFile& aBackupFile, |
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463 const TDesC8& aEncryptionKey, |
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464 const TInt aMode = KDRMNormalBackup ); |
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465 |
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466 /** |
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467 * RestoreContentFromFileL |
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468 * |
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469 * Restores the content file from encrypted format |
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470 * |
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471 * @since 3.0 |
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472 * @param aBackupFile : File handle to backup file |
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473 * @param aEncryptionKey : the key to use to encrypt the backup file |
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474 * @leave Symbian OS error code if an error occurs |
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475 */ |
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476 virtual void RestoreContentFromFileL( RFile& aBackupFile, |
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477 const TDesC8& aEncryptionKey, |
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478 const TInt aMode = KDRMNormalBackup ); |
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479 |
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480 |
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481 /** |
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482 * Updating |
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483 * |
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484 * Returns the ETrue if the database is being updated |
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485 * |
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486 * @since 3.0 |
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487 * @param aStream : the stream to write to |
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488 * @return ETrue if files are currently modified in the DB |
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489 */ |
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490 TBool Updating(); |
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491 |
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492 /** |
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493 * MarkAsCorrupted |
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494 * |
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495 * Marks the rights database as corrupted, to be deleted on reboot |
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496 * |
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497 * @since 3.0 |
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498 */ |
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499 void MarkAsCorrupted(); |
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500 |
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501 private: |
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502 /** |
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503 * Default Constructor - First phase. Prevented. |
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504 */ |
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505 CDRMRightsDB(); |
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506 |
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507 /** |
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508 * Default Constructor - First phase. |
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509 */ |
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510 CDRMRightsDB( RFs& aFs ); |
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511 |
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512 /** |
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513 * ConstructL |
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514 * |
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515 * Second phase constructor |
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516 * |
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517 * @since 2.5 |
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518 * @param aDatabasePath : full pathname of the database |
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519 * @param aKey : database encryption key |
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520 * @param aImei: device serial number (used for UDT) |
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521 * @return Leaves if an error occurs |
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522 */ |
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523 void ConstructL( const TDesC& aDatabasePath, |
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524 const TDesC8& aKey, |
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525 const TDesC& aImei ); |
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526 |
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527 /** |
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528 * Assignment operator - Prevented |
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529 */ |
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530 CDRMRightsDB& operator =( const CDRMRightsDB& ); |
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531 |
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532 /** |
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533 * Copy constructor - Prevented |
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534 */ |
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535 CDRMRightsDB( const CDRMRightsDB& ); |
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536 |
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537 |
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538 /** |
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539 * InitializeDatabaseL |
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540 * |
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541 * Initializes the database for usage |
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542 * |
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543 * @since 2.5 |
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544 * @return Leaves if an error occurs. |
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545 */ |
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546 void InitializeDatabaseL( void ); |
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547 |
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548 /** |
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549 * HashContentID |
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550 * |
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551 * Fills the aRightsObject with the correct data from aData and checks if the |
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552 * rights object can be restored or not. |
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553 * |
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554 * @since 3.0 |
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555 * @param aHashKey : hashed key, out parameter |
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556 * @param aContentID : the content id to be hashed |
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557 * @return None |
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558 */ |
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559 void HashContentID( TPtrC8& aHashKey, const TDesC8& aContentID ); |
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560 |
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561 |
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562 /** |
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563 * GetRightsFileNameL |
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564 * |
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565 * Gets the whole path of the permissions file |
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566 * |
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567 * @since 3.0 |
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568 * @param aContentID : the content id to look for |
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569 * @param aPath : return parameter for the filename |
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570 * @return None, leaves with SymbianOS error code or DRMCommon error |
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571 * code if an error occurs |
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572 */ |
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573 void GetRightsFileNameL( |
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574 const TDesC8& aContentID, |
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575 TFileName& aPath); |
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576 |
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577 /** |
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578 * GetXMLFileNameL |
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579 * |
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580 * Gets the whole path of the domain rights object XML representation |
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581 * |
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582 * @since 3.0 |
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583 * @param aRoID : the rights object id to look for |
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584 * @param aPath : return parameter for the filename |
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585 * @return None, leaves with SymbianOS error code or DRMCommon error |
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586 * code if an error occurs |
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587 */ |
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588 void GetXMLFileNameL( |
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589 const TDesC8& aRoID, |
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590 TFileName& aPath); |
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591 |
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592 /** |
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593 * ModifyKey |
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594 * |
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595 * Encrypts or decrypts the key |
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596 * |
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597 * @since 3.0 |
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598 * @param aKey : the key to be encrypted or decrypted |
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599 * @return None |
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600 */ |
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601 void ModifyKey( TDesC8& aKey ); |
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602 |
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603 /** |
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604 * AddUDTDataL |
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605 * |
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606 * Adds user data transfer data to the header part of the backup |
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607 * file |
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608 * |
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609 * @since 3.0 |
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610 * @param aStream : the stream to write to |
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611 * @return None |
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612 * @leave Can leave with a Symbian OS error code |
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613 */ |
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614 void AddUDTDataL( RWriteStream& aStream ); |
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615 |
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616 // Helper function to do encryption to the stream |
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617 void WriteEncryptedStreamL( RWriteStream& aStream, |
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618 const TDesC8& aMessageData, |
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619 TDes8& aIv, |
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620 TDes8& aRemainder, |
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621 HBufC8*& aEncryptionBuffer, |
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622 TInt& aBytesWritten ); |
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623 |
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624 // Helper function to do encryption to the stream |
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625 void FinalizeEncryptedStreamL( RWriteStream& aStream, |
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626 TDes8& aIv, |
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627 TDes8& aRemainder, |
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628 HBufC8*& aEncryptionBuffer, |
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629 TInt& aBytesWritten ); |
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630 |
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631 // Aes encryption |
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632 void EncryptL( const TDesC8& aIv, |
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633 TPtr8& aData, |
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634 TBool aAddPadding ); |
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635 |
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636 void DecryptL( const TDesC8& aIv, |
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637 TPtr8& aData, |
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638 TBool aRemovePadding, |
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639 const TDesC8& aEncryptionKey ); |
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640 |
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641 void CheckPaddingL( const TDesC8& aData ); |
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642 |
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643 // Helper function to read and decrypt data and reserve memory |
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644 // for it if needed |
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645 void ReadDataL( RFile& aStream, |
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646 TDes8& aEncIV, |
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647 TPtr8& aReadData, |
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648 HBufC8*& aDataBuffer, |
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649 TInt& dataLeft, |
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650 TInt size, |
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651 TBool aStart, |
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652 const TDesC8& aEncryptionKey ); |
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653 |
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654 // check if the file can be deleted: |
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655 void CheckCleanup( const TDesC& aFileName ); |
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656 |
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657 private: |
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658 // fileserver session |
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659 RFs& iFileServer; |
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660 |
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661 // rights database file, fileserver subsession |
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662 HBufC* iDbPath; |
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663 |
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664 // The md5 hash algorithm implementation |
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665 CMD5 *iHasher; |
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666 |
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667 // The Rights database key |
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668 HBufC8* iKey; |
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669 |
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670 // mem stream for restore |
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671 RMemReadStream iMemStream; |
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672 |
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673 // device serial number (used for UDT) |
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674 HBufC* iImei; |
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675 |
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676 // Time stamp of the last update operation |
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677 TTime iLastUpdate; |
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678 }; |
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679 |
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680 #endif // DRMRIGHTSDB_H |
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681 |
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682 // End of File |