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1 // Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Symbian Foundation License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #ifndef ENCRYPTIONKEYREFRESHHELPER_H |
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17 #define ENCRYPTIONKEYREFRESHHELPER_H |
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18 |
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19 |
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20 #include <bt_sock.h> |
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21 #include <bluetooth/hci/hciutil.h> |
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22 |
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23 #include "debug.h" |
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24 #include "linkutil.h" |
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25 #include "physicallinkhelper.h" |
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26 #include "physicallinks.h" |
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27 |
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28 // watchdog |
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29 const TUint KTimeoutEncryptionKeyRefresh = 3000000; // 3 s; |
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30 |
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31 class TEncryptionKeyRefresherState; |
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32 class CEncryptionKeyRefresherStateFactory; |
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33 NONSHARABLE_CLASS(CEncryptionKeyRefresher) : public CPhysicalLinkHelper |
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34 { |
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35 friend class TEncryptionKeyRefresherState; |
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36 friend class TEkrStateIdle; |
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37 friend class TEkrStateDisablingLPM; |
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38 friend class TEkrStateRefreshingKey; |
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39 |
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40 public: |
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41 static CEncryptionKeyRefresher* NewL(CPhysicalLinksManager& aLinkMgr, CPhysicalLink& aLink); |
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42 ~CEncryptionKeyRefresher(); |
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43 |
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44 virtual void StartHelper(); |
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45 |
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46 void EncryptionKeyRefreshComplete(TInt aError); |
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47 |
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48 private: |
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49 CEncryptionKeyRefresher(CPhysicalLinksManager& aLinkMgr, CPhysicalLink& aLink); |
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50 void ConstructL(); |
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51 |
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52 virtual void TimerExpired(); |
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53 virtual void HandleError(TInt aError); |
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54 virtual void EventReceived(TBTBasebandEventNotification& aEvent); |
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55 |
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56 private: |
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57 CEncryptionKeyRefresherStateFactory* iStateFactory; |
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58 const TEncryptionKeyRefresherState* iState; |
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59 }; |
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60 |
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61 //-------------------------------------------------- |
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62 // STATE FACTORY |
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63 //-------------------------------------------------- |
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64 |
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65 /** |
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66 Factory for the EncryptionKeyRefresher states |
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67 |
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68 The states are flyweight classes |
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69 **/ |
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70 NONSHARABLE_CLASS(CEncryptionKeyRefresherStateFactory) : public CBase |
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71 { |
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72 public: |
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73 static CEncryptionKeyRefresherStateFactory* NewL(); |
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74 |
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75 enum TEncryptionKeyRefresherStates |
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76 { |
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77 EIdle, |
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78 EDisablingLPM, |
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79 ERefreshingKey, |
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80 // Note that we don't need a state to enable LPM again |
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81 // as this will happen implicitly when we close our |
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82 // proxy SAP. |
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83 // *** keep next one last *** |
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84 EEncryptionKeyRefresherMaxState, |
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85 }; |
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86 |
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87 const TEncryptionKeyRefresherState& GetState(TEncryptionKeyRefresherStates aState) const; |
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88 TInt StateIndex(const TEncryptionKeyRefresherState* aState) const; |
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89 |
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90 private: |
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91 CEncryptionKeyRefresherStateFactory(); |
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92 void ConstructL(); |
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93 TFixedArray<TEncryptionKeyRefresherState*, EEncryptionKeyRefresherMaxState> iStates; |
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94 }; |
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95 |
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96 |
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97 |
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98 //-------------------------------------------------- |
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99 // STATES, base |
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100 //-------------------------------------------------- |
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101 |
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102 NONSHARABLE_CLASS(TEncryptionKeyRefresherState) |
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103 { |
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104 public: |
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105 TEncryptionKeyRefresherState(CEncryptionKeyRefresherStateFactory& aFactory); |
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106 |
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107 virtual void Enter(CEncryptionKeyRefresher& aContext) const; |
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108 virtual void Exit(CEncryptionKeyRefresher& aContext) const; |
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109 |
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110 virtual void Start(CEncryptionKeyRefresher& aContext) const; |
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111 virtual void EventReceived(CEncryptionKeyRefresher& aContext, TBTBasebandEventNotification& aEvent) const; |
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112 virtual void Error(CEncryptionKeyRefresher& aContext, TInt aErr) const; |
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113 virtual void TimerExpired(CEncryptionKeyRefresher& aContext) const; |
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114 virtual void EncryptionKeyRefreshComplete(CEncryptionKeyRefresher& aContext, TInt aError) const; |
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115 |
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116 protected: |
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117 // Exits old state, sets the new state, and enters it. |
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118 void ChangeState(CEncryptionKeyRefresher& aContext, CEncryptionKeyRefresherStateFactory::TEncryptionKeyRefresherStates aState) const; |
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119 void PanicInState(TLinkPanic aPanic) const; |
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120 |
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121 protected: |
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122 CEncryptionKeyRefresherStateFactory& iFactory; |
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123 #ifdef __FLOG_ACTIVE |
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124 TBuf<48> iName; |
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125 #endif |
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126 }; |
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127 |
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128 |
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129 //-------------------------------------------------- |
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130 // STATES |
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131 //-------------------------------------------------- |
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132 |
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133 NONSHARABLE_CLASS(TEkrStateIdle) : public TEncryptionKeyRefresherState |
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134 { |
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135 public: |
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136 TEkrStateIdle(CEncryptionKeyRefresherStateFactory& aFactory); |
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137 |
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138 virtual void Enter(CEncryptionKeyRefresher& aContext) const; |
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139 virtual void Start(CEncryptionKeyRefresher& aContext) const; |
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140 }; |
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141 |
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142 |
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143 NONSHARABLE_CLASS(TEkrStateDisablingLPM) : public TEncryptionKeyRefresherState |
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144 { |
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145 public: |
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146 TEkrStateDisablingLPM(CEncryptionKeyRefresherStateFactory& aFactory); |
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147 |
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148 virtual void Enter(CEncryptionKeyRefresher& aContext) const; |
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149 virtual void EventReceived(CEncryptionKeyRefresher& aContext, TBTBasebandEventNotification& aEvent) const; |
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150 }; |
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151 |
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152 NONSHARABLE_CLASS(TEkrStateRefreshingKey) : public TEncryptionKeyRefresherState |
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153 { |
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154 public: |
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155 TEkrStateRefreshingKey(CEncryptionKeyRefresherStateFactory& aFactory); |
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156 |
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157 virtual void Enter(CEncryptionKeyRefresher& aContext) const; |
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158 virtual void EncryptionKeyRefreshComplete(CEncryptionKeyRefresher& aContext, TInt aError) const; |
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159 }; |
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160 |
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161 |
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162 #ifdef __FLOG_ACTIVE |
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163 #define STATENAME(x) iName=_L(x) |
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164 #else |
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165 #define STATENAME(x) |
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166 #endif |
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167 |
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168 |
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169 #endif /* ENCRYPTIONKEYREFRESHHELPER_H */ |