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1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // CPDTextLoader class |
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15 // |
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16 // |
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17 |
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18 #define __INCLUDE_CAPABILITY_NAMES__ |
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19 #define __REFERENCE_CAPABILITY_NAMES__ |
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20 #include "e32capability.h" |
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21 |
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22 #include "SC_Strings.h" |
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23 #include "SC_TextIn.h" |
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24 |
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25 namespace DBSC |
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26 { |
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27 |
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28 /** |
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29 Max capability count, when SID or VID used. |
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30 @internalComponent |
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31 */ |
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32 const TInt KMaxCapabilityCount1 = 3; |
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33 |
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34 /** |
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35 Max capability count, when no SID and no VID are used. |
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36 @internalComponent |
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37 */ |
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38 const TInt KMaxCapabilityCount2 = 7; |
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39 |
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40 static TInt CompareCapabilities(const TCapability& aLeft, const TCapability& aRight) |
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41 { |
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42 return aRight - aLeft; |
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43 } |
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44 |
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45 /** |
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46 TStmtProps describes an object representing text file statement type and value |
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47 (the right side of "=" expression) |
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48 @internalComponent |
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49 */ |
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50 struct TStmtProps |
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51 { |
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52 inline TStmtProps() : |
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53 iType(EStmtTEof), |
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54 iValue(NULL, 0) |
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55 { |
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56 } |
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57 TStmtType iType; |
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58 TPtrC iValue; |
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59 }; |
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60 |
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61 /** |
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62 StmtType2Class() function returns the statement class of the supplied statement type parameter. |
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63 @param aType Statement type. |
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64 @return Statement class. |
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65 @internalComponent |
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66 */ |
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67 static TStmtClass StmtType2Class(TStmtType aType) |
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68 { |
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69 switch(aType) |
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70 { |
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71 case EStmtTComment: |
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72 case EStmtTBlank: |
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73 return EStmtCNoData; |
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74 case EStmtTDatabase: |
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75 case EStmtTTable: |
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76 return EStmtCPolicyObj; |
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77 case EStmtTRead: |
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78 case EStmtTWrite: |
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79 case EStmtTSchema: |
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80 return EStmtCPolicyType; |
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81 case EStmtTCapability: |
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82 case EStmtTSID: |
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83 case EStmtTVID: |
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84 return EStmtCPolicyItem; |
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85 case EStmtTBackup: |
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86 return EStmtCBackup; |
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87 default: |
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88 break; |
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89 } |
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90 return EStmtCInvalid; |
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91 } |
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92 |
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93 /** |
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94 Capabilities count. |
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95 @internalComponent |
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96 */ |
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97 |
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98 const TInt KCapabilityCount = sizeof(CapabilityNames) / sizeof(CapabilityNames[0]); |
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99 |
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100 /** |
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101 CapabilityName2Id() function searches and returns the related capability ID having |
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102 the capability name as an input parameter. |
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103 @param aName Capability name |
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104 @return Related to aName capability ID |
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105 @internalComponent |
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106 */ |
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107 static TCapability CapabilityName2Id(const TDesC& aName) |
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108 { |
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109 const TInt KMaxCapabilityStringLen = 20; |
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110 |
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111 TBufC8<KMaxCapabilityStringLen> cap; |
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112 TPtr8 capPtr (cap.Des()); |
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113 |
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114 capPtr.Copy(aName); |
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115 |
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116 for(TInt i=0;i<KCapabilityCount;++i) |
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117 { |
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118 if(0 == capPtr.CompareF(TBuf8<20>((TText8*)CapabilityNames[i]))) |
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119 return (TCapability)i; |
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120 } |
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121 return (TCapability) -1; // Return 'None' if no other capabilities are found |
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122 } |
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123 |
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124 /** |
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125 Statement keywords, which format is: |
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126 <Keyword> |
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127 KStmtKeywordT1 array is in 1:1 relation with KStmtT1 array, except the last KStmtT1 |
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128 member - EStmtTInvalid - it does not have a match in KStmtKeywordT1 array. |
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129 @internalComponent |
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130 */ |
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131 const TDesC* const KStmtKeywordT1[] = |
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132 { |
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133 &KDbStr(), &KTblStr(), &KReadStr(), &KWriteStr(), &KSchemaStr(), &KBackupStr() |
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134 }; |
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135 |
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136 /** |
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137 Statements count, which format is: |
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138 <Keyword> |
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139 @internalComponent |
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140 */ |
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141 const TInt KStmtT1Count = sizeof(KStmtKeywordT1) / sizeof(KStmtKeywordT1[0]); |
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142 |
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143 /** |
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144 Statement IDs, which format is: |
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145 <Keyword> |
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146 KStmtKeywordT1 array is in 1:1 relation with KStmtT1 array, except the last KStmtT1 |
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147 member - EStmtTInvalid - it does not have a match in KStmtKeywordT1 array. |
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148 "EStmtTInvalid" always has to be the last array element. |
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149 @internalComponent |
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150 */ |
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151 const TStmtType KStmtT1[KStmtT1Count + 1] = |
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152 { |
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153 EStmtTDatabase, EStmtTTable, EStmtTRead, EStmtTWrite, EStmtTSchema, EStmtTBackup, EStmtTInvalid |
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154 }; |
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155 |
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156 /** |
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157 StmtKeywordT1ToId() function searches and returns the related statement ID having |
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158 the statement keyword as an input parameter. |
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159 @param aKeyword Statement keyword |
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160 @return Related to aKeyword statement ID |
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161 @internalComponent |
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162 */ |
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163 static TStmtType StmtKeywordT1ToId(const TDesC& aKeyword) |
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164 { |
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165 TInt i; |
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166 for(i=0;i<KStmtT1Count && aKeyword.CompareF(*(KStmtKeywordT1[i]));++i) |
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167 { |
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168 } |
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169 return KStmtT1[i]; |
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170 } |
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171 |
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172 /** |
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173 Statement keywords, which format is: |
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174 <Keyword>=<Data> |
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175 KStmtKeywordT2 array is in 1:1 relation with KStmtT2 array, except the last KStmtT2 |
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176 member - EStmtTInvalid - it does not have a match in KStmtKeywordT2 array. |
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177 @internalComponent |
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178 */ |
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179 const TDesC* const KStmtKeywordT2[] = |
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180 { |
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181 &KNameStr(), &KCapabilityStr(), &KSIDStr(), &KVIDStr() |
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182 }; |
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183 |
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184 /** |
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185 Statements count, which format is: |
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186 <Keyword>=<Data> |
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187 @internalComponent |
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188 */ |
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189 const TInt KStmtT2Count = sizeof(KStmtKeywordT2) / sizeof(KStmtKeywordT2[0]); |
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190 |
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191 /** |
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192 Statement IDs, which format is: |
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193 <Keyword>=<Data> |
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194 KStmtKeywordT2 array is in 1:1 relation with KStmtT2 array, except the last KStmtT2 |
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195 member - EStmtTInvalid - it does not have a match in KStmtKeywordT2 array. |
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196 EStmtTInvalid always has to be the last element in KStmtT2 array. |
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197 @internalComponent |
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198 */ |
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199 const TStmtType KStmtT2[KStmtT2Count + 1] = |
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200 { |
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201 EStmtTName, EStmtTCapability, EStmtTSID, EStmtTVID, EStmtTInvalid |
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202 }; |
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203 |
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204 /** |
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205 StmtKeywordT2ToId() function searches and returns the related statement ID having |
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206 the statement keyword as an input parameter. |
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207 @param aKeyword Statement keyword |
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208 @return Related to aKeyword statement ID |
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209 @internalComponent |
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210 */ |
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211 static TStmtType StmtKeywordT2ToId(const TDesC& aKeyword) |
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212 { |
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213 TInt i; |
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214 for(i=0;i<KStmtT2Count && aKeyword.CompareF(*(KStmtKeywordT2[i]));++i) |
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215 { |
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216 } |
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217 return KStmtT2[i]; |
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218 } |
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219 |
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220 /** |
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221 TDes::Trim() does not work properly when the descriptor length is 0, |
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222 or the descriptor holds a NULL pointer. |
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223 @internalComponent |
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224 */ |
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225 static void Trim(TDes& aDes) |
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226 { |
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227 if(aDes.Length() > 0) |
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228 { |
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229 aDes.Trim(); |
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230 } |
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231 } |
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232 |
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233 /** |
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234 StmtType2PolicyType() function returns the related to aStmtType value - policy type. |
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235 @param aStmtType Statement type |
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236 @return The related policy type - R/W/S |
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237 @internalComponent |
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238 */ |
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239 static TPolicyType StmtType2PolicyType(TStmtType aStmtType) |
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240 { |
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241 switch(aStmtType) |
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242 { |
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243 case EStmtTRead: |
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244 return EPTRead; |
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245 case EStmtTWrite: |
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246 return EPTWrite; |
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247 case EStmtTSchema: |
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248 return EPTSchema; |
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249 default: |
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250 break; |
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251 } |
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252 return EPTNone; |
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253 } |
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254 |
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255 /** |
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256 Creates TSecurityPolicy instance of type 1: SID and a set of up to 3 capabilities. |
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257 @param aSid Security ID |
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258 @param aCapabilities Capabilities array. |
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259 @param aSecurityPolicy Output. Created security policy. |
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260 @internalComponent |
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261 */ |
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262 static void CreateSecurityPolicyT1(TSecureId aSid, const RArray<TCapability>& aCapabilities, |
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263 TSecurityPolicy& aSecurityPolicy) |
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264 { |
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265 TInt count = aCapabilities.Count(); |
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266 if(count == 0) |
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267 { |
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268 aSecurityPolicy = TSecurityPolicy(aSid); |
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269 } |
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270 else if(count == 1) |
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271 { |
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272 aSecurityPolicy = TSecurityPolicy(aSid, aCapabilities[0]); |
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273 } |
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274 else if(count == 2) |
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275 { |
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276 aSecurityPolicy = TSecurityPolicy(aSid, aCapabilities[0], aCapabilities[1]); |
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277 } |
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278 else if(count == 3) |
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279 { |
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280 aSecurityPolicy = TSecurityPolicy(aSid, aCapabilities[0], aCapabilities[1], aCapabilities[2]); |
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281 } |
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282 else |
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283 { |
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284 User::Invariant(); |
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285 } |
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286 } |
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287 |
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288 /** |
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289 Creates TSecurityPolicy instance of type 2: VID and a set of up to 3 capabilities. |
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290 @param aVid Vendor ID |
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291 @param aCapabilities Capabilities array. |
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292 @param aSecurityPolicy Output. Created security policy. |
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293 @internalComponent |
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294 */ |
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295 static void CreateSecurityPolicyT2(TVendorId aVid, const RArray<TCapability>& aCapabilities, |
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296 TSecurityPolicy& aSecurityPolicy) |
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297 { |
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298 TInt count = aCapabilities.Count(); |
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299 if(count == 0) |
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300 { |
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301 aSecurityPolicy = TSecurityPolicy(aVid); |
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302 } |
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303 else if(count == 1) |
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304 { |
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305 aSecurityPolicy = TSecurityPolicy(aVid, aCapabilities[0]); |
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306 } |
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307 else if(count == 2) |
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308 { |
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309 aSecurityPolicy = TSecurityPolicy(aVid, aCapabilities[0], aCapabilities[1]); |
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310 } |
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311 else if(count == 3) |
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312 { |
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313 aSecurityPolicy = TSecurityPolicy(aVid, aCapabilities[0], aCapabilities[1], aCapabilities[2]); |
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314 } |
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315 else |
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316 { |
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317 User::Invariant(); |
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318 } |
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319 } |
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320 |
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321 /** |
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322 Creates TSecurityPolicy instance of type 3: A set of up to 7 capabilities. |
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323 @param aCapabilities Capabilities array. |
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324 @param aSecurityPolicy Output. Created security policy. |
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325 @internalComponent |
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326 */ |
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327 static void CreateSecurityPolicyT3(const RArray<TCapability>& aCapabilities, TSecurityPolicy& aSecurityPolicy) |
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328 { |
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329 TInt count = aCapabilities.Count(); |
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330 if(count == 1) |
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331 { |
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332 aSecurityPolicy = TSecurityPolicy(aCapabilities[0]); |
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333 } |
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334 else if(count == 2) |
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335 { |
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336 aSecurityPolicy = TSecurityPolicy(aCapabilities[0], aCapabilities[1]); |
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337 } |
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338 else if(count == 3) |
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339 { |
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340 aSecurityPolicy = TSecurityPolicy(aCapabilities[0], aCapabilities[1], aCapabilities[2]); |
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341 } |
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342 else if(count == 4) |
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343 { |
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344 aSecurityPolicy = TSecurityPolicy(aCapabilities[0], aCapabilities[1], aCapabilities[2], aCapabilities[3]); |
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345 } |
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346 else if(count == 5) |
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347 { |
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348 aSecurityPolicy = TSecurityPolicy(aCapabilities[0], aCapabilities[1], aCapabilities[2], aCapabilities[3], aCapabilities[4]); |
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349 } |
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350 else if(count == 6) |
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351 { |
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352 aSecurityPolicy = TSecurityPolicy(aCapabilities[0], aCapabilities[1], aCapabilities[2], aCapabilities[3], aCapabilities[4], aCapabilities[5]); |
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353 } |
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354 else if(count == 7) |
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355 { |
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356 aSecurityPolicy = TSecurityPolicy(aCapabilities[0], aCapabilities[1], aCapabilities[2], aCapabilities[3], aCapabilities[4], aCapabilities[5], aCapabilities[6]); |
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357 } |
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358 else |
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359 { |
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360 User::Invariant(); |
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361 } |
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362 } |
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363 |
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364 /** |
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365 Creates TSecurityPolicy instance (initializing aSecurityPolicy parameter). |
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366 @param aSid Security ID |
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367 @param aVid Vendor ID |
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368 @param aCapabilities Capabilities array. |
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369 @leave KErrCorrupt Bad set of SID/VID/Capabilities |
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370 @internalComponent |
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371 */ |
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372 static void CreateSecurityPolicyL(TSecureId aSid, TVendorId aVid, |
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373 const RArray<TCapability>& aCapabilities, |
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374 TSecurityPolicy& aSecurityPolicy) |
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375 { |
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376 TInt cababilityCount = aCapabilities.Count(); |
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377 if(aSid != 0 && aVid != 0) |
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378 { |
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379 __LEAVE(KErrCorrupt); |
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380 } |
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381 if(aSid != 0 || aVid != 0) |
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382 { |
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383 if(cababilityCount > KMaxCapabilityCount1) |
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384 { |
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385 __LEAVE(KErrCorrupt); |
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386 } |
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387 if(aSid != 0) |
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388 { |
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389 DBSC::CreateSecurityPolicyT1(aSid, aCapabilities, aSecurityPolicy); |
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390 } |
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391 else |
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392 { |
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393 DBSC::CreateSecurityPolicyT2(aVid, aCapabilities, aSecurityPolicy); |
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394 } |
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395 } |
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396 else if(cababilityCount > KMaxCapabilityCount2 || cababilityCount == 0) |
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397 { |
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398 __LEAVE(KErrCorrupt); |
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399 } |
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400 else |
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401 { |
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402 DBSC::CreateSecurityPolicyT3(aCapabilities, aSecurityPolicy); |
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403 } |
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404 } |
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405 |
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406 /** |
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407 */ |
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408 inline CPDTextLoader::CPDTextLoader() |
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409 { |
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410 } |
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411 |
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412 /** |
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413 Standard phase-one factory method for CPDTextLoader instance. |
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414 CPDTextLoader instance will be used for loading a set of security policies information |
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415 from a text file, creating the related security policy objects and adding them to |
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416 a CPolicyDomain collection. |
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417 @param aFs File server session |
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418 @param aTextFileName Full text file path, which will be used as an input. |
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419 @return A pointer to just created CPDTextLoader instance. |
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420 @leave System-wide error codes, including KErrNoMemory. |
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421 */ |
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422 CPDTextLoader* CPDTextLoader::NewLC(RFs& aFs, const TDesC& aTextFileName) |
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423 { |
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424 CPDTextLoader* self = new (ELeave) CPDTextLoader; |
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425 CleanupStack::PushL(self); |
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426 self->ConstructL(aFs, aTextFileName); |
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427 return self; |
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428 } |
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429 |
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430 /** |
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431 */ |
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432 CPDTextLoader::~CPDTextLoader() |
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433 { |
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434 iRdStream.Close(); |
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435 } |
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436 |
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437 /** |
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438 Standard phase-two construction method for CPDTextLoader instance. |
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439 @param aFs File server session |
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440 @param aTextFileName Full text file path, which will be used as an input. |
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441 */ |
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442 void CPDTextLoader::ConstructL(RFs& aFs, const TDesC& aTextFileName) |
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443 { |
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444 __LEAVE_IF_ERROR(iRdStream.Open(aFs, aTextFileName, EFileRead | EFileStreamText)); |
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445 } |
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446 |
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447 /** |
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448 MPolicyDomainLoader::RunL() implementation, which is used to load security policies |
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449 from a text file, create the related security policy objects and add them |
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450 to CPolicyDomain instance, controlled by aPolicyDomainBuilder object. |
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451 It is not called directly, but will be called back. |
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452 @param aPolicyDomainBuilder TPolicyDomainBuilder instance, which will be used to add |
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453 created security policy objects to the controlled by it collection. |
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454 @leave System-wide error codes |
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455 */ |
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456 void CPDTextLoader::RunL(TPolicyDomainBuilder& aPolicyDomainBuilder) |
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457 { |
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458 TStmtProps stmtProps; |
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459 const CDbPolicy* dbPolicy = LoadDbPolicyL(aPolicyDomainBuilder, stmtProps); |
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460 __ASSERT(dbPolicy); |
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461 LoadTblPoliciesL(aPolicyDomainBuilder, stmtProps, dbPolicy); |
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462 LoadBackupSIDL(aPolicyDomainBuilder, stmtProps); |
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463 } |
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464 |
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465 /** |
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466 The method returns ETrue if this is the end of file. |
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467 @return ETrue - EOF, EFalse otherwise |
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468 */ |
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469 TBool CPDTextLoader::IsEofL() |
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470 { |
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471 return iRdStream.Source()->TellL(MStreamBuf::ERead) >= iRdStream.Source()->SizeL(); |
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472 } |
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473 |
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474 /** |
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475 The method parses a line from the text file, detects its type and gets the right side |
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476 of "=" as a text line data descriptor. The information will be stored in aStmtProps |
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477 parameter. If the text line is not recognizable, the method leaves with KErrCorrupt. |
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478 Recognizable text line formats are: |
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479 <[keyword]> |
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480 <keyword> |
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481 <keyword>=<value> |
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482 <;>[comments] |
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483 <blank line> |
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484 @param aStmt Current text line |
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485 @param aStmtProps The collected information will be stored there. Output parameter. |
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486 @leave KErrCorrupt - the text line has unknown format |
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487 */ |
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488 void CPDTextLoader::GetStmtPropsL(const TDesC& aStmt, TStmtProps& aStmtProps) const |
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489 { |
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490 aStmtProps.iValue.Set(aStmt); |
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491 if(aStmt.Length() == 0) |
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492 { |
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493 aStmtProps.iType = EStmtTBlank; |
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494 return; |
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495 } |
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496 else if(aStmt[0] == ';') |
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497 { |
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498 aStmtProps.iType = EStmtTComment; |
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499 return; |
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500 } |
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501 TBool res = TryGetStmt1Props(aStmt, aStmtProps); |
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502 if(!res) |
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503 { |
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504 res = TryGetStmt2Props(aStmt, aStmtProps); |
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505 } |
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506 if(!res) |
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507 { |
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508 __LEAVE(KErrCorrupt); |
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509 } |
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510 } |
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511 |
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512 /** |
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513 Tries to process a text line as a: |
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514 <keyword> |
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515 or |
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516 <[keyword]> |
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517 @param aStmt Current text line |
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518 @param aStmtProps Output parameter |
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519 @return ETrue, if it is recognizable text line. Then the method will set the text line type |
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520 in aStmtProps.iType data member. |
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521 EFalse This is not recognizable text line with <keyword> or <[keyword]> format. |
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522 */ |
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523 TBool CPDTextLoader::TryGetStmt1Props(const TDesC& aStmt, TStmtProps& aStmtProps) const |
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524 { |
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525 aStmtProps.iType = DBSC::StmtKeywordT1ToId(aStmt); |
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526 return aStmtProps.iType != EStmtTInvalid; |
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527 } |
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528 |
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529 /** |
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530 Tries to process a text line as a: |
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531 <keyword>=<value> |
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532 @param aStmt Current text line |
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533 @param aStmtProps Output parameter |
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534 @return ETrue, if it is recognizable text line. Then the method will set the text line type |
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535 in aStmtProps.iType data member and the line value in aStmtProps.iValue |
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536 data member. The text will be converted to a upper case. |
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537 EFalse This is not recognizable text line with <keyword>=<value> format. |
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538 */ |
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539 TBool CPDTextLoader::TryGetStmt2Props(const TDesC& aStmt, TStmtProps& aStmtProps) const |
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540 { |
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541 TInt eqPos = aStmt.Find(KEqStr); |
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542 if(eqPos != KErrNotFound && eqPos < (aStmt.Length() - 1)) |
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543 { |
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544 TPtr stmtKeyword(const_cast <TText*> (aStmt.Left(eqPos).Ptr()), eqPos, eqPos); |
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545 DBSC::Trim(stmtKeyword); |
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546 aStmtProps.iType = DBSC::StmtKeywordT2ToId(stmtKeyword); |
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547 if(aStmtProps.iType != EStmtTInvalid) |
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548 { |
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549 TInt valPos = eqPos + 1; |
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550 TInt valLen = aStmt.Length() - valPos; |
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551 TPtr value(const_cast <TText*> (aStmt.Mid(valPos).Ptr()), valLen, valLen); |
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552 DBSC::Trim(value); |
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553 aStmtProps.iValue.Set(value); |
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554 return ETrue; |
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555 } |
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556 } |
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557 return EFalse; |
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558 } |
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559 |
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560 /** |
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561 The method loads a single text line from the file in the place, pointed by aStmt parameter. |
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562 @param aStmt The place, where the text line data will be stored |
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563 @return ETrue This not the end of file, the information in aStmt is valid. |
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564 EFalse End of file. |
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565 @leave System-wide error codes, including KErrCorrupt - unknown file format. |
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566 */ |
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567 TBool CPDTextLoader::LoadStmtL(TPtr& aStmt) |
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568 { |
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569 if(IsEofL()) |
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570 { |
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571 return EFalse; |
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572 } |
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573 TChar char_LF('\n'); |
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574 iStmt8.Zero(); |
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575 iRdStream.ReadL(iStmt8, char_LF); |
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576 aStmt.Copy(iStmt8); |
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577 const TInt len = aStmt.Length(); |
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578 if(len < 2) |
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579 {//Unknown text file format. The text line should have at the end CR-LF pair. |
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580 __LEAVE(KErrCorrupt); |
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581 } |
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582 if(TChar(aStmt[len - 1]) != char_LF) |
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583 {//Too long line |
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584 __LEAVE(KErrCorrupt); |
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585 } |
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586 aStmt.SetLength(len - 1); |
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587 //The last character is (CR). Check for (LF). |
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588 TChar char_CR('\r'); |
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589 if(TChar(aStmt[len - 2]) == char_CR) |
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590 { |
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591 aStmt.SetLength(len - 2); |
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592 } |
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593 DBSC::Trim(aStmt); |
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594 return ETrue; |
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595 } |
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596 |
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597 /** |
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598 The method loads a single text line from the file in the place, pointed by iStmt data member |
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599 skipping lines with comments and blank lines. |
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600 @param aStmtProps Output parameter. It will be initialized after the call. |
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601 @return Statement class. |
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602 @leave System-wide error codes, including KErrCorrupt - unknown file format. |
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603 */ |
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604 TStmtClass CPDTextLoader::LoadNextStmtL(TStmtProps& aStmtProps) |
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605 { |
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606 TPtr stmt(const_cast <TText*> (iStmt.Ptr()), 0, iStmt.MaxLength()); |
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607 TStmtClass stmtClass = EStmtCInvalid; |
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608 do |
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609 { |
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610 if(!LoadStmtL(stmt)) |
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611 { |
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612 aStmtProps.iType = EStmtTEof; |
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613 break; |
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614 } |
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615 GetStmtPropsL(stmt, aStmtProps); |
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616 } |
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617 while((stmtClass = DBSC::StmtType2Class(aStmtProps.iType)) == EStmtCNoData); |
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618 return stmtClass; |
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619 } |
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620 |
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621 /** |
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622 The method loads a single text line from the file in the place, pointed by iStmt data member |
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623 skipping lines with comments and blank lines. The loaded text line type is expected to be |
|
624 aStmtType. |
|
625 @param aStmtProps Output parameter. It will be initialized after the call. |
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626 @param aStmtType Expected type of the loaded text line. |
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627 @leave System-wide error codes, including KErrCorrupt - unknown file format or the loaded line type is |
|
628 not the expected type. |
|
629 */ |
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630 void CPDTextLoader::LoadNextStmtOfTypeL(TStmtProps& aStmtProps, TStmtType aStmtType) |
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631 { |
|
632 (void)LoadNextStmtL(aStmtProps); |
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633 if(aStmtProps.iType != aStmtType) |
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634 { |
|
635 __LEAVE(KErrCorrupt); |
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636 } |
|
637 } |
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638 |
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639 /** |
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640 The method loads all database policy related data from the text file. |
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641 @param aPolicyDomainBuilder TPolicyDomainBuilder instance, which will be used to add |
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642 created database security policy object to the controlled by it policy collection. |
|
643 @param aStmtProps The information about the last loaded text line. |
|
644 @return A const pointer to just created database policy object from loaded text data. |
|
645 @leave System-wide error codes. |
|
646 */ |
|
647 const CDbPolicy* CPDTextLoader::LoadDbPolicyL(TPolicyDomainBuilder& aPolicyDomainBuilder, |
|
648 TStmtProps& aStmtProps) |
|
649 { |
|
650 LoadNextStmtOfTypeL(aStmtProps, EStmtTDatabase); |
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651 |
|
652 CPolicyBase::RPolicyCollection policyColl; |
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653 CleanupClosePushL(policyColl); |
|
654 |
|
655 LoadSecurityPoliciesL(policyColl, aStmtProps); |
|
656 |
|
657 CDbPolicy* dbPolicy = CDbPolicy::NewLC(policyColl); |
|
658 aPolicyDomainBuilder.SetDbPolicyL(dbPolicy); |
|
659 CleanupStack::Pop(dbPolicy); |
|
660 |
|
661 CleanupStack::PopAndDestroy(&policyColl); |
|
662 return dbPolicy; |
|
663 } |
|
664 |
|
665 /** |
|
666 The method loads all table policy related data from the text file. |
|
667 @param aPolicyDomainBuilder TPolicyDomainBuilder instance, which will be used to add |
|
668 created table security policy objects to the controlled by it policy collection. |
|
669 @param aStmtProps The information about the last loaded text line. |
|
670 @param aDbPolicy A const pointer to the database policy object, created previously from loaded text data. |
|
671 @leave System-wide error codes. |
|
672 */ |
|
673 void CPDTextLoader::LoadTblPoliciesL(TPolicyDomainBuilder& aPolicyDomainBuilder, |
|
674 TStmtProps& aStmtProps, const CDbPolicy* aDbPolicy) |
|
675 { |
|
676 __ASSERT(aDbPolicy); |
|
677 CPolicyBase::RPolicyCollection policyColl; |
|
678 CleanupClosePushL(policyColl); |
|
679 while(aStmtProps.iType == EStmtTTable) |
|
680 { |
|
681 LoadNextStmtOfTypeL(aStmtProps, EStmtTName); |
|
682 TBufC<KMaxFileName> tableName; |
|
683 tableName = aStmtProps.iValue; |
|
684 |
|
685 LoadSecurityPoliciesL(policyColl, aStmtProps); |
|
686 |
|
687 CTblPolicy* tblPolicy = CTblPolicy::NewLC(tableName, policyColl, aDbPolicy); |
|
688 aPolicyDomainBuilder.AddTblPolicyL(tblPolicy); |
|
689 CleanupStack::Pop(tblPolicy); |
|
690 } |
|
691 CleanupStack::PopAndDestroy(&policyColl); |
|
692 } |
|
693 |
|
694 /** |
|
695 The method loads the backup & restore SID, if it is in the file. |
|
696 @param aPolicyDomainBuilder TPolicyDomainBuilder instance, which will be used to store |
|
697 loaded backup & restore SID. |
|
698 @param aStmtProps The information about the last loaded text line. |
|
699 @leave System-wide error codes. |
|
700 */ |
|
701 void CPDTextLoader::LoadBackupSIDL(TPolicyDomainBuilder& aPolicyDomainBuilder, |
|
702 TStmtProps& aStmtProps) |
|
703 { |
|
704 TSecureId backupSID((TUint32)ECapability_None);//ECapability_None is used in TSecurityPolicy constructors too. |
|
705 if(aStmtProps.iType == EStmtTBackup) |
|
706 { |
|
707 LoadNextStmtOfTypeL(aStmtProps, EStmtTSID); |
|
708 backupSID = GetIdL(aStmtProps.iValue); |
|
709 } |
|
710 else if(aStmtProps.iType != EStmtTEof) |
|
711 { |
|
712 __LEAVE(KErrCorrupt); |
|
713 } |
|
714 aPolicyDomainBuilder.SetBackupSID(backupSID); |
|
715 } |
|
716 |
|
717 /** |
|
718 The method loads all database/table related security policy information from the text file. |
|
719 @param aPolicyColl Output parameter - an array, which elements type is CPolicyBase::RPolicyCollection. |
|
720 The collected from the text file security policy information wil be stored there. |
|
721 @param aStmtProps The information about the last loaded text line. |
|
722 @leave System-wide error codes. |
|
723 */ |
|
724 void CPDTextLoader::LoadSecurityPoliciesL(CPolicyBase::RPolicyCollection& aPolicyColl, |
|
725 TStmtProps& aStmtProps) |
|
726 { |
|
727 aPolicyColl.Reset(); |
|
728 (void)LoadNextStmtL(aStmtProps); |
|
729 while(DBSC::StmtType2Class(aStmtProps.iType) == EStmtCPolicyType) |
|
730 { |
|
731 CPolicyBase::TPolicy policy; |
|
732 policy.iType = DBSC::StmtType2PolicyType(aStmtProps.iType); |
|
733 __ASSERT(policy.iType != EPTNone); |
|
734 LoadSecurityPolicyL(policy.iData, aStmtProps); |
|
735 __LEAVE_IF_ERROR(aPolicyColl.Append(policy)); |
|
736 } |
|
737 if(aPolicyColl.Count() == 0) |
|
738 { |
|
739 __LEAVE(KErrCorrupt); |
|
740 } |
|
741 } |
|
742 |
|
743 /** |
|
744 The method loads a single security policy from the text file. |
|
745 @param aSecurityPolicy Output parameter - the information from the file will be stored there. |
|
746 The collected from the text file security policy information wil be stored there. |
|
747 @param aStmtProps The information about the last loaded text line. |
|
748 @leave System-wide error codes. |
|
749 */ |
|
750 void CPDTextLoader::LoadSecurityPolicyL(TSecurityPolicy& aSecurityPolicy, |
|
751 TStmtProps& aStmtProps) |
|
752 { |
|
753 TSecureId sid(0); |
|
754 TVendorId vid(0); |
|
755 RArray<TCapability> capabilities; |
|
756 CleanupClosePushL(capabilities); |
|
757 while(LoadNextStmtL(aStmtProps) == EStmtCPolicyItem) |
|
758 { |
|
759 if(aStmtProps.iType == EStmtTCapability) |
|
760 { |
|
761 GetCapabilitiesL(aStmtProps.iValue, capabilities); |
|
762 } |
|
763 else if(aStmtProps.iType == EStmtTSID) |
|
764 { |
|
765 if(sid != 0) |
|
766 {//duplicated SID text line |
|
767 __LEAVE(KErrCorrupt); |
|
768 } |
|
769 sid = GetIdL(aStmtProps.iValue); |
|
770 } |
|
771 else if(aStmtProps.iType == EStmtTVID) |
|
772 { |
|
773 if(vid != 0) |
|
774 {//duplicated VID text line |
|
775 __LEAVE(KErrCorrupt); |
|
776 } |
|
777 vid = GetIdL(aStmtProps.iValue); |
|
778 } |
|
779 else |
|
780 { |
|
781 __ASSERT(0); |
|
782 } |
|
783 } |
|
784 if(capabilities.Count() == 0 && sid == 0 && vid == 0) |
|
785 {//invalid security policy data |
|
786 __LEAVE(KErrCorrupt); |
|
787 } |
|
788 DBSC::CreateSecurityPolicyL(sid, vid, capabilities, aSecurityPolicy); |
|
789 CleanupStack::PopAndDestroy(&capabilities); |
|
790 } |
|
791 |
|
792 /** |
|
793 The method parses a string with capabilities information and puts found capabilities in aCapability |
|
794 output parameter. |
|
795 @param aCapabilityStr Capabilities string. |
|
796 @param aCapabilities The collected capabilities will be stored there. |
|
797 @leave System-wide error codes. KErrCorrupt, if aCapability is not 0, which means there are |
|
798 2 or more capability strings for the same policy. |
|
799 */ |
|
800 void CPDTextLoader::GetCapabilitiesL(const TDesC& aCapabilityStr, |
|
801 RArray<TCapability>& aCapabilities) const |
|
802 { |
|
803 if(aCapabilities.Count() > 0) |
|
804 {//No more than one "capability" statement in the text file! |
|
805 __LEAVE(KErrCorrupt); |
|
806 } |
|
807 TLinearOrder<TCapability> linearOrder(&DBSC::CompareCapabilities); |
|
808 TLex lex(aCapabilityStr); |
|
809 for(TPtrC token=lex.NextToken();token.Length()!=0;token.Set(lex.NextToken())) |
|
810 { |
|
811 TCapability cap = DBSC::CapabilityName2Id(token); |
|
812 if(cap != ECapability_Limit) |
|
813 {//InsertInOrder() - to warn the user in case of duplicates |
|
814 __LEAVE_IF_ERROR(aCapabilities.InsertInOrder(cap, linearOrder)); |
|
815 } |
|
816 else |
|
817 { |
|
818 __LEAVE(KErrGeneral);//Unknown capability |
|
819 } |
|
820 } |
|
821 } |
|
822 |
|
823 /** |
|
824 @param aStr A string with SID or VID. |
|
825 @return The UID, extracted from the string |
|
826 @leave System-wide error codes. |
|
827 */ |
|
828 TUint CPDTextLoader::GetIdL(const TDesC& aStr) const |
|
829 { |
|
830 TLex lex(aStr); |
|
831 TUint id; |
|
832 __LEAVE_IF_ERROR(lex.Val(id, EHex)); |
|
833 if(id == 0) |
|
834 { |
|
835 __LEAVE(KErrCorrupt); |
|
836 } |
|
837 return id; |
|
838 } |
|
839 |
|
840 } //end of - namespace DBSC |