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1 /* |
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2 * Copyright (c) 2002-2008 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: CCFContextManager class implementation. |
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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 <cfcontextdataobject.h> |
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20 |
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21 #include "CFContextManager.h" |
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22 #include "CFContextQueryImpl.h" |
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23 #include "CFContextObjectImpl.h" |
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24 #include "cfcontextsubscriptionlistener.h" |
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25 #include "CFContextSubscriptionImpl.h" |
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26 #include "CFCacheElement.h" |
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27 #include "cfutils.h" |
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28 #include "cftrace.h" |
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29 #include "CFContextDataProxy.h" |
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30 #include "cfcommon.h" |
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31 |
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32 // Public Constructors and destructors |
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33 CCFContextManager* CCFContextManager::NewL( |
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34 MCFSecurityChecker& aSecurityChecker ) |
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35 { |
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36 FUNC_LOG; |
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37 |
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38 CCFContextManager* self = CCFContextManager::NewLC( aSecurityChecker ); |
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39 CleanupStack::Pop(self); |
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40 |
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41 return self; |
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42 } |
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43 |
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44 CCFContextManager* CCFContextManager::NewLC( |
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45 MCFSecurityChecker& aSecurityChecker ) |
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46 { |
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47 FUNC_LOG; |
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48 |
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49 CCFContextManager* self |
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50 = new (ELeave) CCFContextManager( aSecurityChecker ); |
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51 CleanupStack::PushL(self); |
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52 self->ConstructL(); |
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53 |
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54 return self; |
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55 } |
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56 |
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57 CCFContextManager::~CCFContextManager() |
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58 { |
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59 FUNC_LOG; |
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60 |
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61 iCleanupCacheElements.Close(); |
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62 iContextCache.ResetAndDestroy(); |
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63 iContextCache.Close(); |
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64 delete iPreviousContext; |
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65 delete iCacheOrder; |
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66 delete iCacheSearchKey; |
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67 |
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68 iSubscriptions.ResetAndDestroy(); |
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69 } |
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70 |
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71 CCFContextManager::CCFContextManager( MCFSecurityChecker& aSecurityChecker ) |
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72 { |
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73 FUNC_LOG; |
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74 |
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75 iSecurityChecker = &aSecurityChecker; |
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76 } |
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77 |
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78 void CCFContextManager::ConstructL() |
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79 { |
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80 FUNC_LOG; |
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81 |
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82 iCacheOrder = new (ELeave) TLinearOrder<CCFCacheElement> |
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83 (CCFCacheElement::CompareByTypeAndSource); |
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84 |
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85 iCacheSearchKey = CCFCacheElement::NewL(); |
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86 |
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87 iPreviousContext = CCFContextObject::NewL(); |
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88 } |
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89 |
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90 // METHODS |
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91 |
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92 //----------------------------------------------------------------------------- |
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93 // CCFContextManager::PublishContextL |
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94 //----------------------------------------------------------------------------- |
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95 // |
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96 void CCFContextManager::PublishContextL( CCFContextObject &aContext, |
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97 RThread& aClientThread ) |
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98 { |
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99 FUNC_LOG; |
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100 |
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101 ValidatePublishContextL( aContext, aClientThread ); |
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102 DoPublishContextL( aContext ); |
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103 } |
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104 |
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105 //----------------------------------------------------------------------------- |
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106 // CCFContextManager::PublishContextL |
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107 //----------------------------------------------------------------------------- |
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108 // |
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109 void CCFContextManager::PublishContextL( CCFContextObject &aContext, |
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110 RThread& aClientThread, |
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111 CCFContextDataObject& aData ) |
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112 { |
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113 FUNC_LOG; |
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114 |
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115 ValidatePublishContextL( aContext, aClientThread ); |
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116 DoPublishContextL( aContext, &aData ); |
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117 } |
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118 |
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119 //----------------------------------------------------------------------------- |
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120 // CCFContextManager::RequestContextL |
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121 //----------------------------------------------------------------------------- |
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122 // |
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123 void CCFContextManager::RequestContextL( RContextObjectArray& aResultBuffer, |
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124 CCFContextQuery& aContextQuery, |
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125 RThread& aClientThread ) |
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126 { |
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127 FUNC_LOG; |
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128 |
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129 // Accessing the context cache for the latest context values is enough |
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130 DoRequestContextL( aResultBuffer, aContextQuery, &aClientThread ); |
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131 } |
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132 |
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133 |
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134 //----------------------------------------------------------------------------- |
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135 // CCFContextManager::RequestContextL |
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136 //----------------------------------------------------------------------------- |
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137 // |
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138 CCFContextObject* CCFContextManager::RequestContextL( const TDesC& aContextType, |
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139 const TDesC& aContextSource, |
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140 RThread& aClientThread ) |
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141 { |
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142 FUNC_LOG; |
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143 |
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144 // check the cache |
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145 iCacheSearchKey->Context().SetTypeL( aContextType ); |
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146 iCacheSearchKey->Context().SetSourceL( aContextSource ); |
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147 TInt index = KErrNone; |
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148 if( iContextCache.FindInOrder( iCacheSearchKey, index, |
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149 *iCacheOrder ) == KErrNone ) |
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150 { |
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151 // index points to the matching object |
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152 if( index >= 0 && index < iContextCache.Count() ) |
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153 { |
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154 User::LeaveIfError( DoReadSecurityCheck( |
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155 *iContextCache[index], |
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156 aClientThread ) ); |
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157 return &iContextCache[index]->Context(); |
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158 } |
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159 else |
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160 { |
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161 return NULL; |
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162 } |
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163 } |
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164 else // == KErrNotFound |
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165 { // index points to "the place to be" |
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166 return NULL; |
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167 } |
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168 } |
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169 |
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170 //----------------------------------------------------------------------------- |
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171 // CCFContextManager::SubscriptionAddedL |
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172 //----------------------------------------------------------------------------- |
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173 // |
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174 void CCFContextManager::SubscriptionAddedL( |
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175 CCFContextSubscriptionImpl& aSubscription, |
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176 RThread& aClientThread ) |
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177 { |
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178 FUNC_LOG; |
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179 |
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180 TInt count = iContextCache.Count(); |
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181 CCFCacheElement* element = NULL; |
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182 for( TInt i = 0; i < count; i++ ) |
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183 { |
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184 element = iContextCache[i]; |
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185 if( aSubscription.Matches( element->Context().Type(), |
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186 element->Context().Source() ) ) |
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187 { |
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188 TInt err = DoReadSecurityCheck( *element, aClientThread ); |
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189 if (err == KErrNone) |
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190 { |
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191 element->AddSubscriptionL( aSubscription ); |
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192 } |
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193 else |
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194 { |
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195 aSubscription.SubscriptionListener().HandleContextSubscriptionError( err, |
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196 element->Context().Source(), |
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197 element->Context().Type() ); |
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198 } |
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199 } |
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200 } |
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201 } |
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202 |
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203 //----------------------------------------------------------------------------- |
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204 // CCFContextManager::SubscriptionRemoved |
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205 //----------------------------------------------------------------------------- |
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206 // |
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207 TBool CCFContextManager::SubscriptionRemoved( |
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208 CCFContextSubscriptionImpl& aSubscription) |
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209 { |
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210 FUNC_LOG; |
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211 |
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212 TBool cleanupElement( EFalse ); |
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213 for( TInt i = 0; i < iContextCache.Count(); i++ ) |
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214 { |
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215 TInt j = iContextCache[ i ]->Subscriptions().Count() - 1; |
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216 for( ; j >= 0; j-- ) |
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217 { |
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218 if( &aSubscription == iContextCache[ i ]->Subscriptions()[ j ] ) |
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219 { |
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220 CCFCacheElement* cacheElement = iContextCache[ i ]; |
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221 if ( iPublishingForCacheElement |
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222 && ( iPublishingForCacheElement == cacheElement ) ) |
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223 { |
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224 cleanupElement = ETrue; |
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225 cacheElement->NullifySubscription( j ); |
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226 TInt err = iCleanupCacheElements.InsertInAddressOrder( |
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227 cacheElement ); |
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228 if ( err == KErrAlreadyExists ) |
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229 { |
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230 err = KErrNone; |
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231 } |
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232 ERROR( err, "CCFContextManager::SubscriptionRemoved - Adding cache element to cleanup array failed!" ); |
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233 } |
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234 else |
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235 { |
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236 cacheElement->RemoveSubscription( j ); |
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237 } |
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238 } |
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239 } |
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240 } |
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241 |
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242 return cleanupElement; |
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243 } |
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244 |
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245 |
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246 //---------------------------------------------------------------------------- |
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247 // CCFContextManager::DefineContextL |
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248 //---------------------------------------------------------------------------- |
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249 // |
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250 void CCFContextManager::DefineContextL( const TDesC& aContextSource, |
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251 const TDesC& aContextType, |
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252 const TSecurityPolicy& aReadSecurityPolicy, |
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253 const TSecurityPolicy& aWriteSecurityPolicy ) |
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254 { |
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255 FUNC_LOG; |
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256 |
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257 RThread thread; |
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258 CleanupClosePushL( thread ); |
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259 |
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260 DefineContextL( aContextSource, aContextType, aReadSecurityPolicy, |
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261 aWriteSecurityPolicy, NULL, thread.SecureId() ); |
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262 |
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263 CleanupStack::PopAndDestroy( ); |
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264 } |
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265 |
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266 |
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267 //---------------------------------------------------------------------------- |
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268 // CCFContextManager::DefineContextL |
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269 //---------------------------------------------------------------------------- |
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270 // |
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271 void CCFContextManager::DefineContextL( const TDesC& aContextSource, |
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272 const TDesC& aContextType, |
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273 const TSecurityPolicy& aReadSecurityPolicy, |
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274 const TSecurityPolicy& aWriteSecurityPolicy, |
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275 MCFContextSource* aContextPublisher, |
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276 const TUid& aPublisherUid ) |
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277 { |
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278 FUNC_LOG; |
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279 |
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280 // Prepare and find context |
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281 iCacheSearchKey->Context().SetSourceL( aContextSource ); |
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282 iCacheSearchKey->Context().SetTypeL( aContextType ); |
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283 iCacheSearchKey->Context().SetValueL( KNullDesC ); |
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284 iCacheSearchKey->SetReadSecurityPolicy( aReadSecurityPolicy ); |
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285 iCacheSearchKey->SetWriteSecurityPolicy( aWriteSecurityPolicy ); |
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286 iCacheSearchKey->SetContextPublisher( aContextPublisher, aPublisherUid ); |
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287 |
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288 TInt index = KErrNone; |
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289 TInt searchError = iContextCache.FindInOrder( iCacheSearchKey, |
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290 index, |
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291 *iCacheOrder ); |
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292 |
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293 if ( searchError != KErrNone ) |
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294 { |
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295 // New context type |
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296 User::LeaveIfError( |
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297 iContextCache.Insert( iCacheSearchKey, index ) ); |
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298 CacheElementAddedL( *iCacheSearchKey ); |
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299 iCacheSearchKey = NULL; |
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300 iCacheSearchKey = CCFCacheElement::NewL(); |
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301 |
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302 // Signalling new context type |
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303 iPreviousContext->SetSourceL( KNullDesC ); |
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304 iPreviousContext->SetTypeL( KNullDesC ); |
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305 |
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306 INFO_2( "New context defined: [%S: %S]", |
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307 &aContextSource, |
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308 &aContextType ); |
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309 } |
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310 else |
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311 { |
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312 TInt err = KErrNone; |
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313 CCFCacheElement* cacheElement = iContextCache[index]; |
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314 if( cacheElement->PublisherUid() == aPublisherUid ) |
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315 { |
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316 if( RedefineAllowed( *cacheElement, aContextPublisher, aPublisherUid ) ) |
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317 { |
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318 cacheElement->SetContextPublisher( aContextPublisher, |
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319 aPublisherUid ); |
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320 INFO_3( "Context [%S: %S] redefined by client [%x]", |
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321 &aContextSource, &aContextType, aPublisherUid.iUid ); |
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322 } |
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323 else |
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324 { |
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325 err = KErrAlreadyExists; |
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326 } |
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327 } |
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328 else |
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329 { |
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330 err = KErrAlreadyExists; |
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331 } |
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332 |
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333 ERROR_2( err, "Context already defined: [%S: %S]", |
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334 &aContextSource, |
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335 &aContextType ); |
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336 User::LeaveIfError( err ); |
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337 } |
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338 } |
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339 |
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340 |
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341 //----------------------------------------------------------------------------- |
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342 // CCFContextManager::GetReadSecurityPolicyL |
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343 //----------------------------------------------------------------------------- |
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344 // |
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345 void CCFContextManager::GetReadSecurityPolicyL( const TDesC& aContextSource, |
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346 const TDesC& aContextType, |
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347 TSecurityPolicy& aPolicy ) |
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348 { |
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349 FUNC_LOG; |
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350 |
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351 TInt count = iContextCache.Count(); |
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352 CCFCacheElement* cacheElement = NULL; |
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353 for( TInt i = 0; i < count; i++ ) |
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354 { |
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355 cacheElement = iContextCache[ i ]; |
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356 |
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357 if( cacheElement->Context().Source().Compare( aContextSource ) == 0 |
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358 && cacheElement->Context().Type().Compare( aContextType ) == 0 ) |
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359 { |
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360 aPolicy = cacheElement->GetReadSecurityPolicy(); |
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361 return; |
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362 } |
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363 } |
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364 |
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365 ERROR_2( KErrNotFound, "Security Policy for [%S: %S] not found!", |
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366 &aContextSource, &aContextType ); |
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367 User::Leave( KErrNotFound ); |
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368 } |
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369 |
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370 //----------------------------------------------------------------------------- |
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371 // CCFContextManager::GetWriteSecurityPolicyL |
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372 //----------------------------------------------------------------------------- |
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373 // |
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374 void CCFContextManager::GetWriteSecurityPolicyL( const TDesC& aContextSource, |
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375 const TDesC& aContextType, |
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376 TSecurityPolicy& aPolicy ) |
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377 { |
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378 FUNC_LOG; |
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379 |
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380 TInt count = iContextCache.Count(); |
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381 CCFCacheElement* cacheElement = NULL; |
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382 for( TInt i = 0; i < count; i++ ) |
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383 { |
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384 cacheElement = iContextCache[ i ]; |
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385 |
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386 if( cacheElement->Context().Source().Compare( aContextSource ) == 0 |
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387 && cacheElement->Context().Type().Compare( aContextType ) == 0 ) |
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388 { |
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389 aPolicy = cacheElement->GetWriteSecurityPolicy(); |
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390 return; |
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391 } |
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392 } |
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393 |
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394 ERROR_2( KErrNotFound, "Security Policy for [%S: %S] not found!", |
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395 &aContextSource, &aContextType ); |
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396 User::Leave( KErrNotFound ); |
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397 } |
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398 |
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399 |
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400 //----------------------------------------------------------------------------- |
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401 // CCFContextManager::DeregisterPublisher |
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402 //----------------------------------------------------------------------------- |
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403 // |
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404 void CCFContextManager::DeregisterPublisher( MCFContextSource& aPublisher ) |
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405 { |
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406 FUNC_LOG; |
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407 |
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408 for( TInt i = 0; i < iContextCache.Count() ; i++ ) |
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409 { |
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410 CCFCacheElement* cacheElement = iContextCache[ i ]; |
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411 if( cacheElement->ContextPublisher() == &aPublisher ) |
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412 { |
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413 cacheElement->SetContextPublisher( NULL ); |
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414 } |
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415 } |
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416 } |
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417 |
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418 |
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419 //----------------------------------------------------------------------------- |
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420 // CCFContextManager::GetLatestFromCacheL |
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421 //----------------------------------------------------------------------------- |
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422 // |
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423 void CCFContextManager::GetLatestFromCacheL( |
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424 RContextObjectArray& aLatestContexts, |
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425 queryMatchFunction aMatchFunction, |
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426 const CCFContextQueryImpl& aContextQuery, |
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427 RThread* aClientThread ) |
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428 { |
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429 FUNC_LOG; |
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430 |
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431 TInt count = iContextCache.Count(); |
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432 CCFCacheElement* cacheElement = NULL; |
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433 for( TInt i = 0; i < count; ++i ) |
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434 { |
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435 cacheElement = iContextCache[ i ]; |
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436 if( cacheElement->Context().Value().Length() |
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437 && ( aContextQuery.*aMatchFunction )( |
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438 cacheElement->Context().Type(), |
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439 cacheElement->Context().Source() ) ) |
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440 { |
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441 if( !aClientThread || |
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442 DoReadSecurityCheck( *cacheElement, *aClientThread ) == KErrNone ) |
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443 { |
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444 aLatestContexts.AppendL( &cacheElement->Context() ); |
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445 } |
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446 } |
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447 } |
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448 } |
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449 |
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450 //----------------------------------------------------------------------------- |
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451 // CCFContextManager::LogContextCache |
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452 //----------------------------------------------------------------------------- |
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453 // |
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454 void CCFContextManager::LogContextCache() |
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455 { |
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456 #ifdef DEBUG_LOG_CONTEXT_CACHE |
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457 INFO( "CONTEXT CACHE start:" ); |
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458 TInt cacheIndex; |
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459 for (cacheIndex = 0; cacheIndex < iContextCache.Count(); ++cacheIndex) |
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460 { |
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461 iContextCache[cacheIndex]->DebugPrintContents(); |
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462 } |
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463 INFO( "CONTEXT CACHE start:" ); |
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464 INFO( "CONTEXT CACHE BY TYPE start:" ); |
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465 for (cacheIndex = 0; cacheIndex < iContextCacheByType.Count() ; |
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466 ++cacheIndex) |
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467 { |
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468 iContextCacheByType[cacheIndex]->DebugPrintContents(); |
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469 } |
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470 INFO( "CONTEXT CACHE BY TYPE end:" ); |
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471 #endif // DEBUG_LOG_CONTEXT_CACHE |
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472 } |
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473 |
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474 //----------------------------------------------------------------------------- |
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475 // CCFContextManager::DoSecurityCheck |
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476 //----------------------------------------------------------------------------- |
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477 // |
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478 TInt CCFContextManager::DoReadSecurityCheck( CCFCacheElement& aContextCache, |
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479 RThread& aClientThread ) |
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480 { |
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481 FUNC_LOG; |
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482 |
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483 // Security check only needed if request is from other process than CF |
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484 TInt err = KErrNone; |
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485 |
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486 TBool securityCheckOk = |
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487 iSecurityChecker->CheckClientSecurity( aClientThread, |
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488 aContextCache.GetReadSecurityPolicy() ); |
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489 |
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490 if( !securityCheckOk ) |
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491 { |
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492 // Insuffcient security, indicate client |
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493 err = KErrAccessDenied; |
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494 } |
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495 |
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496 return err; |
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497 } |
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498 |
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499 //----------------------------------------------------------------------------- |
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500 // CCFContextManager::DoSecurityCheck |
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501 //----------------------------------------------------------------------------- |
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502 // |
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503 TInt CCFContextManager::DoWriteSecurityCheck( CCFCacheElement& aContextCache, |
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504 RThread& aClientThread ) |
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505 { |
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506 FUNC_LOG; |
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507 |
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508 // Security check only needed if request is from other process than CF |
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509 TInt err = KErrNone; |
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510 |
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511 TBool securityCheckOk = |
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512 iSecurityChecker->CheckClientSecurity( aClientThread, |
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513 aContextCache.GetWriteSecurityPolicy() ); |
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514 |
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515 if( !securityCheckOk ) |
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516 { |
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517 // Insuffcient security, indicate client |
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518 err = KErrAccessDenied; |
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519 } |
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520 |
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521 return err; |
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522 } |
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523 |
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524 |
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525 //----------------------------------------------------------------------------- |
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526 // CCFContextManager::DoRequestContextL |
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527 //----------------------------------------------------------------------------- |
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528 // |
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529 void CCFContextManager::DoRequestContextL( RContextObjectArray& aResultBuffer, |
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530 CCFContextQuery& aContextQuery, |
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531 RThread* aClientThread ) |
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532 { |
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533 FUNC_LOG; |
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534 |
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535 CCFContextQueryImpl& queryImpl = (CCFContextQueryImpl&) aContextQuery; |
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536 GetLatestFromCacheL( aResultBuffer, |
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537 &CCFContextQueryImpl::Matches, |
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538 queryImpl, |
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539 aClientThread ); |
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540 } |
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541 |
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542 //----------------------------------------------------------------------------- |
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543 // CCFContextManager::SubscribeContextL |
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544 //----------------------------------------------------------------------------- |
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545 // |
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546 void CCFContextManager::SubscribeContextL( |
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547 CCFContextSubscription* aSubscription, |
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548 MCFContextSubscriptionListener* aListener, |
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549 RThread& aClientThread ) |
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550 { |
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551 FUNC_LOG; |
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552 |
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553 CCFContextSubscriptionImpl* subscriptionImpl = |
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554 static_cast<CCFContextSubscriptionImpl*>( aSubscription ); |
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555 subscriptionImpl->SetSubscriptionListener( *aListener ); |
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556 |
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557 // Append new subscription into array |
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558 TInt err = iSubscriptions.Append( subscriptionImpl ); |
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559 if( err != KErrNone ) |
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560 { |
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561 User::Leave( err ); |
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562 } |
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563 |
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564 // Notify data manager that new subscription has been added |
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565 TRAP( err, |
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566 SubscriptionAddedL( *subscriptionImpl, aClientThread ) ); |
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567 if( err ) |
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568 { |
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569 iSubscriptions.Remove( iSubscriptions.Count() -1 ); |
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570 User::Leave( err ); |
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571 } |
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572 } |
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573 |
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574 //----------------------------------------------------------------------------- |
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575 // CCFContextManager::RemoveSubscription |
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576 //----------------------------------------------------------------------------- |
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577 // |
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578 TBool CCFContextManager::RemoveSubscription( |
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579 CCFContextSubscription& aSubscription, |
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580 MCFContextSubscriptionListener& aListener ) |
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581 { |
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582 FUNC_LOG; |
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583 |
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584 TBool cleanupElement( EFalse ); |
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585 CCFContextSubscriptionImpl* subscriptionImpl = |
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586 static_cast<CCFContextSubscriptionImpl*>( &aSubscription ); |
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587 |
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588 subscriptionImpl->SetSubscriptionListener( aListener ); |
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589 TBool deleteSubscriptionImpl( EFalse ); |
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590 |
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591 TInt i = iSubscriptions.Count() - 1; |
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592 while ( i >= 0 ) |
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593 { |
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594 if ( i >= iSubscriptions.Count() ) |
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595 { |
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596 // Context source has removed subscriptions via synchronous call |
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597 // e.g. from managers call to source's NoSubscribers() function. |
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598 i = iSubscriptions.Count() - 1; |
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599 } |
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600 |
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601 if ( i < 0 ) |
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602 { |
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603 INFO( "All subscriptions removed" ); |
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604 break; |
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605 } |
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606 |
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607 if ( iSubscriptions[ i ]->IsSame( *subscriptionImpl ) ) |
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608 { |
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609 CCFContextSubscriptionImpl* subscription = iSubscriptions[ i ]; |
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610 iSubscriptions.Remove( i ); |
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611 INFO_2( "CCFContextManager::RemoveSubscription - Subscription [%S: %S] removed", |
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612 &subscription->ContextSource(), |
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613 &subscription->ContextType() ); |
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614 if ( SubscriptionRemoved( *subscription ) ) |
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615 { |
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616 cleanupElement = ETrue; |
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617 } |
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618 if ( subscription != subscriptionImpl ) |
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619 { |
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620 delete subscription; |
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621 } |
|
622 else |
|
623 { |
|
624 // Delay deleting when the same subscription instance is used |
|
625 // internally for both subscribe and unsubscribe. |
|
626 deleteSubscriptionImpl = ETrue; |
|
627 } |
|
628 } |
|
629 --i; |
|
630 } |
|
631 |
|
632 if ( deleteSubscriptionImpl ) |
|
633 { |
|
634 delete subscriptionImpl; |
|
635 } |
|
636 |
|
637 return cleanupElement; |
|
638 } |
|
639 |
|
640 //----------------------------------------------------------------------------- |
|
641 // CCFContextManager::RemoveSubscription |
|
642 //----------------------------------------------------------------------------- |
|
643 // |
|
644 TBool CCFContextManager::RemoveSubscriptions( |
|
645 MCFContextSubscriptionListener* aListener) |
|
646 { |
|
647 FUNC_LOG; |
|
648 |
|
649 TBool cleanupElement( EFalse ); |
|
650 |
|
651 TInt i = iSubscriptions.Count() - 1; |
|
652 while ( i >= 0 ) |
|
653 { |
|
654 if ( i >= iSubscriptions.Count() ) |
|
655 { |
|
656 // Context source has removed subscriptions via synchronous call |
|
657 // e.g. from managers call to source's NoSubscribers() function. |
|
658 i = iSubscriptions.Count() - 1; |
|
659 } |
|
660 |
|
661 if ( i < 0 ) |
|
662 { |
|
663 INFO( "All subscriptions removed" ); |
|
664 break; |
|
665 } |
|
666 |
|
667 CCFContextSubscriptionImpl* subscription = iSubscriptions[ i ]; |
|
668 if ( &( subscription->SubscriptionListener() ) == aListener ) |
|
669 { |
|
670 iSubscriptions.Remove( i ); |
|
671 if ( SubscriptionRemoved( *subscription ) ) |
|
672 { |
|
673 cleanupElement = ETrue; |
|
674 } |
|
675 delete subscription; |
|
676 subscription = NULL; |
|
677 } |
|
678 --i; |
|
679 } |
|
680 |
|
681 return cleanupElement; |
|
682 } |
|
683 |
|
684 //----------------------------------------------------------------------------- |
|
685 // CCFContextManager::CleanupCacheElementSubscriptions |
|
686 //----------------------------------------------------------------------------- |
|
687 // |
|
688 void CCFContextManager::CleanupCacheElementSubscriptions() |
|
689 { |
|
690 FUNC_LOG; |
|
691 |
|
692 for ( TInt i = 0; i < iCleanupCacheElements.Count(); ++i ) |
|
693 { |
|
694 CCFCacheElement* element = iCleanupCacheElements[ i ]; |
|
695 element->RemoveNullSubscriptions(); |
|
696 } |
|
697 iCleanupCacheElements.Reset(); |
|
698 } |
|
699 |
|
700 //----------------------------------------------------------------------------- |
|
701 // CCFContextManager::CacheElementAddedL |
|
702 //----------------------------------------------------------------------------- |
|
703 // |
|
704 void CCFContextManager::CacheElementAddedL( |
|
705 CCFCacheElement& aCacheElement ) |
|
706 { |
|
707 FUNC_LOG; |
|
708 |
|
709 TInt count = iSubscriptions.Count(); |
|
710 CCFContextSubscriptionImpl* subscription = NULL; |
|
711 for( TInt i = 0; i < count; i++ ) |
|
712 { |
|
713 subscription = iSubscriptions[i]; |
|
714 if( subscription->Matches( aCacheElement.Context().Type(), |
|
715 aCacheElement.Context().Source() ) ) |
|
716 { |
|
717 // Check security |
|
718 RThread thread; |
|
719 TInt err = |
|
720 subscription->SubscriptionListener().Client( thread ); |
|
721 if( err == KErrNone ) |
|
722 { |
|
723 err = DoReadSecurityCheck( aCacheElement, thread ); |
|
724 if( err == KErrNone ) |
|
725 { |
|
726 aCacheElement.AddSubscriptionL( *subscription ); |
|
727 } |
|
728 else |
|
729 { |
|
730 subscription->SubscriptionListener().HandleContextSubscriptionError( |
|
731 err, |
|
732 aCacheElement.Context().Source(), |
|
733 aCacheElement.Context().Type() ); |
|
734 } |
|
735 } |
|
736 else |
|
737 { |
|
738 subscription->SubscriptionListener().HandleContextSubscriptionError( |
|
739 err, |
|
740 aCacheElement.Context().Source(), |
|
741 aCacheElement.Context().Type() ); |
|
742 } |
|
743 thread.Close(); |
|
744 } |
|
745 } |
|
746 } |
|
747 |
|
748 //----------------------------------------------------------------------------- |
|
749 // CCFContextManager::ValidatePublishContextL |
|
750 //----------------------------------------------------------------------------- |
|
751 // |
|
752 void CCFContextManager::ValidatePublishContextL( CCFContextObject& aContext, |
|
753 RThread& aClientThread ) |
|
754 { |
|
755 FUNC_LOG; |
|
756 |
|
757 // Define context |
|
758 iCacheSearchKey->Context().CopyL( aContext ); |
|
759 CCFCacheElement* currentCacheElement = iCacheSearchKey; |
|
760 TInt index = KErrNone; |
|
761 TInt searchError = iContextCache.FindInOrder( iCacheSearchKey, |
|
762 index, |
|
763 *iCacheOrder); |
|
764 |
|
765 // Both source and type must match. |
|
766 // Otherwise context has not been defined and will lead to error. |
|
767 if( searchError == KErrNone ) |
|
768 { |
|
769 if( index >= 0 && index < iContextCache.Count() ) |
|
770 { |
|
771 // index and indexByType points to the matching cache elements |
|
772 currentCacheElement = iContextCache[index]; |
|
773 } |
|
774 else |
|
775 { |
|
776 // index not found -> leave |
|
777 ERROR_GEN( "Context cache element not found from cache list" ); |
|
778 User::Leave( KErrNotFound ); |
|
779 } |
|
780 |
|
781 // Perform security check |
|
782 TInt err = DoWriteSecurityCheck( *currentCacheElement, aClientThread ); |
|
783 ERROR_2( err, "Security check failed: [%S: %S]", |
|
784 &aContext.Source(), |
|
785 &aContext.Type() ); |
|
786 User::LeaveIfError( err ); |
|
787 } |
|
788 else |
|
789 { |
|
790 // Indicate client that specified context cannot be found |
|
791 ERROR_2( KErrNotFound, "Published context not found: [%S: %S]", |
|
792 &aContext.Source(), |
|
793 &aContext.Type() ); |
|
794 User::Leave( KErrNotFound ); |
|
795 } |
|
796 } |
|
797 |
|
798 //----------------------------------------------------------------------------- |
|
799 // CCFContextManager::DoPublishContextL |
|
800 //----------------------------------------------------------------------------- |
|
801 // |
|
802 void CCFContextManager::DoPublishContextL( CCFContextObject& aContext, |
|
803 CCFContextDataObject* aData ) |
|
804 { |
|
805 FUNC_LOG; |
|
806 |
|
807 // Define context |
|
808 aContext.SetTimestampToHomeTime(); |
|
809 iCacheSearchKey->Context().CopyL( aContext ); |
|
810 CCFCacheElement* currentCacheElement = iCacheSearchKey; |
|
811 TBool valueChanged = EFalse; |
|
812 TInt index = KErrNone; |
|
813 TInt searchError = iContextCache.FindInOrder( iCacheSearchKey, |
|
814 index, |
|
815 *iCacheOrder); |
|
816 |
|
817 // Both source and type must match. |
|
818 // Otherwise context has not been defined and will lead to error. |
|
819 if( searchError == KErrNone ) |
|
820 { |
|
821 if( index >= 0 && index < iContextCache.Count() ) |
|
822 { |
|
823 // index and indexByType points to the matching cache elements |
|
824 currentCacheElement = iContextCache[ index ]; |
|
825 } |
|
826 else |
|
827 { |
|
828 // index not found -> leave |
|
829 ERROR( KErrNotFound, "Context cache element not found from cache list" ); |
|
830 User::Leave( KErrNotFound ); |
|
831 } |
|
832 |
|
833 // store previous values |
|
834 iPreviousContext->CopyL( currentCacheElement->Context() ); |
|
835 |
|
836 // Check if we have to update cache and indicate subscribers |
|
837 if( currentCacheElement->Context().Value() != aContext.Value() ) |
|
838 { |
|
839 // Update context |
|
840 currentCacheElement->Context().CopyL( aContext ); |
|
841 valueChanged = ETrue; |
|
842 } |
|
843 |
|
844 LogContextCache(); |
|
845 |
|
846 // Let subscriptions do the indication if needed |
|
847 iPublishingForCacheElement = currentCacheElement; |
|
848 const RPointerArray< CCFContextSubscriptionImpl >& subscriptions = |
|
849 currentCacheElement->Subscriptions(); |
|
850 TInt count = subscriptions.Count(); |
|
851 CCFContextSubscriptionImpl* subscription = NULL; |
|
852 for( TInt i = 0 ; i < count; i++ ) |
|
853 { |
|
854 subscription = subscriptions[ i ]; |
|
855 if( subscription ) |
|
856 { |
|
857 if( aData && subscription->DataObjectEnabled() ) |
|
858 { |
|
859 subscription->EvaluateContextChangeL( aContext, |
|
860 *aData, |
|
861 valueChanged ); |
|
862 } |
|
863 else |
|
864 { |
|
865 subscription->EvaluateContextChangeL( aContext, |
|
866 *iPreviousContext, |
|
867 valueChanged ); |
|
868 } |
|
869 } |
|
870 } |
|
871 iPublishingForCacheElement = NULL; |
|
872 |
|
873 INFO_3( "Published context: [%S: %S: %S]", |
|
874 &aContext.Source(), |
|
875 &aContext.Type(), |
|
876 &aContext.Value() ); |
|
877 if( aData ) |
|
878 { |
|
879 INFO_1( "Published data object: [0x%x]", aData->Uid() ); |
|
880 } |
|
881 } |
|
882 else |
|
883 { |
|
884 // Indicate client that specified context cannot be found |
|
885 ERROR_2( KErrNotFound, "Published context not found: [%S: %S]", |
|
886 &aContext.Source(), |
|
887 &aContext.Type() ); |
|
888 User::Leave( KErrNotFound ); |
|
889 } |
|
890 } |
|
891 |
|
892 //------------------------------------------------------------------------------ |
|
893 // CCFContextManager::RedefineAllowed |
|
894 //------------------------------------------------------------------------------ |
|
895 // |
|
896 TBool CCFContextManager::RedefineAllowed( CCFCacheElement& aElement, |
|
897 const MCFContextSource* aSource, |
|
898 const TUid& aUid ) const |
|
899 { |
|
900 FUNC_LOG; |
|
901 |
|
902 TBool allowed = EFalse; |
|
903 |
|
904 // Redefine is allowed: |
|
905 // - Same client session from the same client process |
|
906 if( aElement.ContextPublisher() == aSource && |
|
907 aElement.PublisherUid() == aUid ) |
|
908 { |
|
909 allowed = ETrue; |
|
910 } |
|
911 |
|
912 // - The owner is NULL and the client process is the same |
|
913 else if( !aElement.ContextPublisher() && |
|
914 aElement.PublisherUid() == aUid ) |
|
915 { |
|
916 allowed = ETrue; |
|
917 } |
|
918 |
|
919 // - Owner is NULL and the redefine is done by context source plug-in |
|
920 else if( !aElement.ContextPublisher() && |
|
921 KCFServerSid == aUid ) |
|
922 { |
|
923 allowed = ETrue; |
|
924 } |
|
925 |
|
926 return allowed; |
|
927 } |
|
928 |
|
929 // End of file |
|
930 |