1 /* |
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2 * Copyright (c) 2005-2006 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: State machine for file lookup |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include "rsfwlookupstatemachine.h" |
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20 #include "rsfwfileentry.h" |
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21 #include "rsfwfiletable.h" |
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22 #include "rsfwinterface.h" |
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23 #include "rsfwfileengine.h" |
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24 #include "mdebug.h" |
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25 #include "rsfwdirentattr.h" |
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26 #include "rsfwvolumetable.h" |
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27 |
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28 // ---------------------------------------------------------------------------- |
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29 // CRsfwLookupStateMachine::CRsfwLookupStateMachine |
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30 // ---------------------------------------------------------------------------- |
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31 // |
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32 CRsfwLookupStateMachine::CRsfwLookupStateMachine() |
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33 { |
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34 iKidCreated = ETrue; |
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35 } |
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36 |
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37 // ---------------------------------------------------------------------------- |
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38 // CRsfwLookupStateMachine::~CRsfwLookupStateMachine |
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39 // ---------------------------------------------------------------------------- |
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40 // |
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41 CRsfwLookupStateMachine::~CRsfwLookupStateMachine() |
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42 { |
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43 delete iDirEntAttr; |
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44 if (iPath) |
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45 { |
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46 delete iPath; |
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47 } |
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48 } |
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49 |
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50 // ---------------------------------------------------------------------------- |
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51 // CRsfwLookupStateMachine::CompleteRequestL |
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52 // ---------------------------------------------------------------------------- |
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53 // |
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54 CRsfwRfeStateMachine::TState* CRsfwLookupStateMachine::CompleteRequestL(TInt aError) |
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55 { |
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56 TRfeLookupOutArgs* outArgs = static_cast<TRfeLookupOutArgs*>(iOutArgs); |
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57 if (aError == KUpdateNotRequired) |
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58 { // discard |
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59 aError = KErrNone; |
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60 } |
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61 |
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62 if (!aError) |
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63 { |
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64 outArgs->iFid = iKidFep->Fid(); |
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65 } |
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66 CompleteAndDestroyState()->SetErrorCode(aError); |
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67 return CompleteAndDestroyState(); |
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68 } |
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69 |
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70 // ---------------------------------------------------------------------------- |
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71 // CRsfwLookupStateMachine::CompleteL |
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72 // ---------------------------------------------------------------------------- |
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73 // |
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74 CRsfwLookupStateMachine::TState* CRsfwLookupStateMachine::CompleteL() |
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75 { |
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76 // from CRsfwFileEngine::UpdateFileAttributes/UpdateDirAttributes |
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77 #ifdef _DEBUG |
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78 if (iDirEntAttr) |
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79 { |
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80 DEBUGSTRING(("Kid attributes: attr=0x%x, size=%d, time=", |
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81 iDirEntAttr->Att(), |
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82 iDirEntAttr->Size())); |
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83 DEBUGTIME((iDirEntAttr->Modified())); |
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84 } |
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85 #endif |
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86 |
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87 if (iKidCreated) |
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88 { |
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89 /* from CRsfwFileEngine::DoLookupL */ |
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90 // Create a file entry for this kid |
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91 if (!Volumes()->EnsureMetadataCanBeAddedL(Node())) |
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92 { |
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93 User::Leave(KErrNoMemory); |
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94 } |
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95 iKidFep = CRsfwFileEntry::NewL(iKidName, Node()); |
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96 if (iDirEntAttr->Att() & KEntryAttDir) |
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97 { |
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98 iKidFep->SetType(KNodeTypeDir); |
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99 } |
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100 else |
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101 { |
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102 iKidFep->SetType(KNodeTypeFile); |
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103 } |
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104 |
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105 iKidFep->SetAttributesL(*iDirEntAttr, ETrue); |
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106 |
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107 // Remember that we have this kid |
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108 FileEngine()->iFileTable->AddL(iKidFep); |
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109 Node()->AddKid(*iKidFep); |
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110 // If we really find a new kid that we were not aware of |
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111 // we must set the parent as locally dirty |
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112 // (this should not happen too often) |
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113 Node()->SetLocallyDirty(); |
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114 } |
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115 |
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116 // We now have a valid kid entry |
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117 return CompleteRequestL(KErrNone); |
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118 } |
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119 |
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120 // ---------------------------------------------------------------------------- |
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121 // CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::TUpdateKidAttributesTryFirstTypeState |
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122 // ---------------------------------------------------------------------------- |
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123 // |
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124 CRsfwLookupStateMachine:: |
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125 TUpdateKidAttributesTryFirstTypeState:: |
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126 TUpdateKidAttributesTryFirstTypeState(CRsfwLookupStateMachine* aParent) |
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127 : iOperation(aParent) |
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128 { |
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129 } |
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130 |
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131 // ---------------------------------------------------------------------------- |
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132 // CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::EnterL |
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133 // ---------------------------------------------------------------------------- |
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134 // |
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135 void CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::EnterL() |
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136 { |
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137 DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::EnterL")); |
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138 TRfeLookupInArgs* inArgs = |
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139 static_cast<TRfeLookupInArgs*>(iOperation->iInArgs); |
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140 TRfeLookupOutArgs* outArgs = |
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141 static_cast<TRfeLookupOutArgs*>(iOperation->iOutArgs); |
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142 iOperation->iNodeType = inArgs->iNodeType; |
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143 iOperation->iKidName.Set(inArgs->iName); |
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144 |
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145 TInt err = KErrNone; |
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146 iOperation->iKidFep = NULL; |
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147 |
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148 if (!iOperation->Node()) |
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149 { |
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150 User::Leave(KErrNotFound); |
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151 } |
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152 |
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153 DEBUGSTRING16(("looking up '%S' in fid=%d", |
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154 &(iOperation->iKidName), |
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155 iOperation->Node()->Fid().iNodeId)); |
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156 |
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157 // We'd better be looking up in a directory |
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158 if (iOperation->Node()->Type() != KNodeTypeDir) |
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159 { |
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160 User::Leave(KErrNotFound); |
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161 } |
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162 |
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163 // Try to get the entry from the parent directory |
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164 iOperation->iKidFep = |
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165 iOperation->Node()->FindKidByName(iOperation->iKidName); |
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166 if (!iOperation->iKidFep) |
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167 { |
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168 DEBUGSTRING(("no such kid!")); |
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169 // Didn't find it |
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170 // if the parent directory's cache entry is still valid |
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171 // we return "not found" |
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172 if ((iOperation->FileEngine()->UseCachedAttributes(*iOperation->Node())) && |
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173 (iOperation->FileEngine()->UseCachedData(*iOperation->Node()))) |
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174 { |
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175 User::Leave(KErrNotFound); |
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176 } |
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177 |
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178 iOperation->iPath = |
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179 iOperation->FileEngine()->FullNameL(*iOperation->Node()); |
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180 if (iOperation->iNodeType == KNodeTypeUnknown) |
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181 { |
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182 iOperation->FileEngine()-> |
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183 UpdateAttributesL(*iOperation->iPath, |
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184 iOperation->iKidName, |
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185 iOperation->iDirEntAttr, |
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186 KNodeTypeFile, |
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187 iOperation); |
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188 } |
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189 else |
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190 { |
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191 iOperation->FileEngine()-> |
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192 UpdateAttributesL(*iOperation->iPath, |
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193 iOperation->iKidName, |
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194 iOperation->iDirEntAttr, |
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195 iOperation->iNodeType, |
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196 iOperation); |
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197 } |
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198 |
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199 if (err) |
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200 { |
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201 // communication to the server failed, |
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202 //e.g. we are in disconnected mode |
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203 User::Leave(err); |
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204 } |
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205 } |
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206 else |
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207 { |
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208 // We now have a valid kid entry |
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209 outArgs->iFid = iOperation->iKidFep->Fid(); |
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210 iOperation->HandleRemoteAccessResponse(0, KUpdateNotRequired); |
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211 } |
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212 } |
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213 |
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214 // ---------------------------------------------------------------------------- |
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215 // CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::CompleteL |
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216 // ---------------------------------------------------------------------------- |
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217 // |
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218 CRsfwLookupStateMachine::TState* |
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219 CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::CompleteL() |
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220 { |
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221 DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::CompleteL")); |
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222 return iOperation->CompleteL(); |
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223 } |
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224 |
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225 // ---------------------------------------------------------------------------- |
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226 // CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::ErrorL |
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227 // If we were looking for a file return KErrNotFound |
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228 // if for directory KErrPathNotFound. |
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229 // File Server seems to always call Entry() (-->lookup()) before other file |
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230 // operations so as long as we return the right variant of "not found" |
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231 // error here other places do not matter. |
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232 // ---------------------------------------------------------------------------- |
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233 // |
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234 CRsfwLookupStateMachine::TState* |
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235 CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::ErrorL(TInt aCode) |
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236 { |
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237 DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTryFirstTypeState::ErrorL %d", aCode)); |
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238 if (aCode == KUpdateNotRequired) |
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239 { |
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240 iOperation->iKidCreated = EFalse; |
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241 return iOperation->CompleteL(); |
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242 } |
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243 else if (iOperation->iNodeType == KNodeTypeUnknown) |
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244 { |
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245 return new CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState( |
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246 iOperation); |
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247 } |
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248 else if ((aCode != KErrNotFound) && (aCode != KErrPathNotFound)) |
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249 { |
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250 return iOperation->CompleteRequestL(aCode); |
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251 } |
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252 else if (iOperation->iNodeType == KNodeTypeDir) |
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253 { |
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254 return iOperation->CompleteRequestL(KErrPathNotFound); |
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255 } |
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256 else |
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257 { |
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258 return iOperation->CompleteRequestL(KErrNotFound); |
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259 } |
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260 } |
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261 |
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262 // ---------------------------------------------------------------------------- |
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263 // CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::TUpdateKidAttributesTrySecondTypeState |
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264 // ---------------------------------------------------------------------------- |
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265 // |
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266 CRsfwLookupStateMachine:: |
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267 TUpdateKidAttributesTrySecondTypeState:: |
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268 TUpdateKidAttributesTrySecondTypeState(CRsfwLookupStateMachine* aParent) |
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269 : iOperation(aParent) |
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270 { |
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271 } |
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272 |
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273 // ---------------------------------------------------------------------------- |
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274 // CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::EnterL |
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275 // ---------------------------------------------------------------------------- |
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276 // |
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277 void CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::EnterL() |
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278 { |
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279 DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::EnterL")); |
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280 // We only come here if nodetype is unknown and |
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281 // we already tried to lookup as a file |
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282 iOperation->FileEngine()->UpdateAttributesL(*iOperation->iPath, |
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283 iOperation->iKidName, |
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284 iOperation->iDirEntAttr, |
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285 KNodeTypeDir, iOperation); |
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286 } |
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287 |
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288 // ---------------------------------------------------------------------------- |
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289 // CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::CompleteL |
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290 // ---------------------------------------------------------------------------- |
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291 // |
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292 CRsfwLookupStateMachine::TState* |
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293 CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::CompleteL() |
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294 { |
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295 DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::CompleteL")); |
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296 // from CRsfwFileEngine::UpdateFileAttributes/UpdateDirAttributes |
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297 return iOperation->CompleteL(); |
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298 } |
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299 |
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300 |
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301 // ---------------------------------------------------------------------------- |
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302 // CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::ErrorL |
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303 // If we were looking for a file return KErrNotFound, |
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304 // if for directory KErrPathNotFound. |
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305 // File Server seems to always call Entry() (-->lookup()) before other file |
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306 // operations so as long as we return the right variant of "not found" |
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307 // error here other places do not matter. |
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308 // ---------------------------------------------------------------------------- |
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309 // |
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310 CRsfwLookupStateMachine::TState* |
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311 CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::ErrorL(TInt aCode) |
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312 { |
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313 DEBUGSTRING(("CRsfwLookupStateMachine::TUpdateKidAttributesTrySecondTypeState::ErrorL %d", aCode)); |
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314 // from CRsfwFileEngine::Lookup() |
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315 // No such kid |
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316 |
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317 // cache the last failed lookup results |
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318 iOperation->FileEngine()->SetFailedLookup(*iOperation->iPath, |
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319 iOperation->iKidName); |
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320 |
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321 if (iOperation->iNodeType == KNodeTypeDir) |
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322 { |
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323 return iOperation->CompleteRequestL(KErrPathNotFound); |
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324 } |
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325 else |
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326 { |
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327 return iOperation->CompleteRequestL(KErrNotFound); |
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328 } |
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329 } |
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330 |
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