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1 /* |
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2 * Copyright (c) 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: Helper class for handling Bluetooth Baseband-related |
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15 * connection management. |
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16 * |
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17 */ |
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18 |
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19 |
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20 |
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21 #include <wlaninternalpskeys.h> |
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22 #include <featmgr.h> |
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23 |
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24 #include "btengsrvbbconnectionmgr.h" |
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25 #include "debug.h" |
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26 |
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27 /** ?description */ |
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28 const TInt KBTEngSrvBBConnId = 11; |
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29 /** ?description */ |
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30 const TInt KBTEngSrvWlanStatusId = 12; |
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31 /** ?description */ |
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32 const TInt KBTEngMaxAddrArraySize = 10; |
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33 |
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34 |
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35 // ======== MEMBER FUNCTIONS ======== |
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36 |
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37 // --------------------------------------------------------------------------- |
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38 // C++ default constructor |
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39 // --------------------------------------------------------------------------- |
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40 // |
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41 CBTEngSrvBBConnMgr::CBTEngSrvBBConnMgr(RSocketServ& aSockServ) |
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42 : iSockServ(aSockServ) |
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43 { |
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44 } |
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45 |
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46 |
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47 // --------------------------------------------------------------------------- |
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48 // Symbian 2nd-phase constructor |
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49 // --------------------------------------------------------------------------- |
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50 // |
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51 void CBTEngSrvBBConnMgr::ConstructL() |
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52 { |
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53 iLinkCountWatcher = CBTEngActive::NewL( *this, KBTEngSrvBBConnId, |
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54 CActive::EPriorityStandard ); |
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55 // Subscribe to the BT Baseband link count. |
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56 User::LeaveIfError( iLinkCountProperty.Attach( KPropertyUidBluetoothCategory, |
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57 KPropertyKeyBluetoothGetPHYCount ) ); |
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58 // Check if we need to monitor WLAN |
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59 FeatureManager::InitializeLibL(); |
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60 iWlanSupported = FeatureManager::FeatureSupported( KFeatureIdProtocolWlan ); |
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61 FeatureManager::UnInitializeLib(); |
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62 if( iWlanSupported ) |
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63 { |
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64 iWlanWatcher = CBTEngActive::NewL( *this, KBTEngSrvWlanStatusId, |
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65 CActive::EPriorityStandard ); |
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66 User::LeaveIfError( iWlanStatusProperty.Attach( KPSUidWlan, |
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67 KPSWlanIndicator ) ); |
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68 } |
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69 } |
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70 |
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71 |
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72 // --------------------------------------------------------------------------- |
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73 // NewL |
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74 // --------------------------------------------------------------------------- |
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75 // |
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76 CBTEngSrvBBConnMgr* CBTEngSrvBBConnMgr::NewL(RSocketServ& aSockServ) |
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77 { |
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78 CBTEngSrvBBConnMgr* self = new( ELeave ) CBTEngSrvBBConnMgr(aSockServ); |
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79 CleanupStack::PushL( self ); |
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80 self->ConstructL(); |
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81 CleanupStack::Pop( self ); |
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82 return self; |
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83 } |
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84 |
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85 |
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86 // --------------------------------------------------------------------------- |
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87 // Destructor |
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88 // --------------------------------------------------------------------------- |
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89 // |
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90 CBTEngSrvBBConnMgr::~CBTEngSrvBBConnMgr() |
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91 { |
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92 Unsubscribe(); |
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93 iLinkCountProperty.Close(); |
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94 iWlanStatusProperty.Close(); |
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95 delete iLinkCountWatcher; |
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96 delete iWlanWatcher; |
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97 delete iPhyLinks; |
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98 } |
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99 |
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100 |
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101 // --------------------------------------------------------------------------- |
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102 // Start listening to the relevant properties. |
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103 // --------------------------------------------------------------------------- |
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104 // |
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105 void CBTEngSrvBBConnMgr::Subscribe() |
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106 { |
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107 if( !iLinkCountWatcher->IsActive() ) |
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108 { |
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109 iLinkCountProperty.Subscribe( iLinkCountWatcher->RequestStatus() ); |
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110 iLinkCountWatcher->GoActive(); |
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111 } |
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112 if( iWlanSupported && !iWlanWatcher->IsActive() ) |
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113 { |
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114 iWlanStatusProperty.Subscribe( iWlanWatcher->RequestStatus() ); |
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115 iWlanWatcher->GoActive(); |
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116 } |
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117 } |
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118 |
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119 |
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120 // --------------------------------------------------------------------------- |
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121 // Stop listening to the subscribed properties. |
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122 // --------------------------------------------------------------------------- |
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123 // |
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124 void CBTEngSrvBBConnMgr::Unsubscribe() |
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125 { |
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126 if( iLinkCountWatcher->IsActive() ) |
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127 { |
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128 iLinkCountProperty.Cancel(); |
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129 iLinkCountWatcher->CancelRequest(); |
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130 } |
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131 if( iWlanWatcher && iWlanWatcher->IsActive() ) |
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132 { |
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133 iWlanStatusProperty.Cancel(); |
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134 iWlanWatcher->CancelRequest(); |
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135 } |
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136 } |
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137 |
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138 |
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139 // --------------------------------------------------------------------------- |
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140 // ?implementation_description |
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141 // --------------------------------------------------------------------------- |
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142 // |
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143 TInt CBTEngSrvBBConnMgr::ManageTopology( TBool aPrepDiscovery ) |
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144 { |
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145 TInt linkCount = 0; |
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146 TBool closeSock = ETrue; // To check if we can close the handle again. |
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147 TInt err = iLinkCountProperty.Get( linkCount ); |
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148 if( !err && !linkCount && iAutoSwitchOff ) |
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149 { |
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150 // Inform server that there are no active connections anymore. |
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151 iAutoSwitchOff = EFalse; |
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152 iCallBack.CallBack(); |
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153 } |
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154 RBTDevAddrArray addrArray; |
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155 TInt minLinks = 1; // We don't care about our role if we have only one link. |
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156 if( aPrepDiscovery || GetWlanStatus() ) |
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157 { |
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158 // If we are performing discovery shortly, or we have an active WLAN |
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159 // connection, then request master role on all links. |
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160 minLinks = 0; |
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161 } |
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162 if( !err && linkCount > minLinks ) |
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163 { |
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164 if( iPhyLinks ) |
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165 { |
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166 // If we have an open handle with the socket server (because we |
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167 // are disconnecting all links), then don't close the socket. |
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168 closeSock = EFalse; |
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169 } |
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170 // There are existing links; get the addresses. |
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171 TRAP( err, GetConnectedAddressesL( addrArray ) ); |
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172 } |
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173 if( !err && addrArray.Count() > minLinks ) |
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174 { |
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175 // Try to become master on all the links. |
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176 RBTPhysicalLinkAdapter btLink; |
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177 for( TInt i = 0; i < addrArray.Count(); i++ ) |
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178 { |
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179 // At this point, the results of the operations do not matter |
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180 // too much. If an error is returned, then that only affects |
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181 // further operations on the same link, and they should not be |
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182 // passed back to the caller. |
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183 TUint32 basebandState = 0; |
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184 err = btLink.Open( iSockServ, addrArray[ i ] ); |
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185 if( !err ) |
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186 { |
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187 // Mostly for logging purposes, check the current role (the |
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188 // request will anyway be ignored if we're already master). |
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189 err = btLink.PhysicalLinkState( basebandState ); |
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190 TRACE_INFO( ( |
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191 _L( "[BTEng]\t ManageTopology: Current role: %d; status: %d" ), |
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192 (TInt) ( basebandState & ENotifyAnyRole ), err ) ) |
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193 } |
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194 if( !err && ( basebandState & ENotifySlave ) ) |
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195 { |
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196 // Try to become master of this link. This request could |
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197 // be issued without checking the current role, and would |
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198 // just be ignored if we are already master. The return |
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199 // value is also ignored later on, at this stage it is |
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200 // not important if the call succeeds. |
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201 err = btLink.RequestMasterRole(); |
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202 TRACE_INFO( ( |
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203 _L( "[BTEng]\t Requesting master role; result: %d" ), err ) ) |
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204 } |
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205 // Reset the result, so that it is not passed up |
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206 // (in case this was the last one in the loop). |
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207 err = KErrNone; |
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208 btLink.Close(); |
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209 } |
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210 } |
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211 addrArray.Close(); |
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212 if( closeSock ) |
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213 { |
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214 delete iPhyLinks; |
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215 iPhyLinks = NULL; |
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216 } |
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217 return err; |
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218 } |
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219 |
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220 |
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221 // --------------------------------------------------------------------------- |
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222 // Gets an array of addresses of remote devices for all Baseband connections. |
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223 // --------------------------------------------------------------------------- |
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224 // |
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225 void CBTEngSrvBBConnMgr::GetConnectedAddressesL( RBTDevAddrArray& aAddrArray ) |
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226 { |
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227 TInt err = KErrNone; |
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228 if( !iPhyLinks ) |
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229 { |
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230 iPhyLinks = CBluetoothPhysicalLinks::NewL( *this, iSockServ ); |
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231 } |
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232 if( !err ) |
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233 { |
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234 err = iPhyLinks->Enumerate( aAddrArray, KBTEngMaxAddrArraySize ); |
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235 } |
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236 User::LeaveIfError( err ); |
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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 // Request to disconnect all Bluetooth baseband connections. |
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242 // --------------------------------------------------------------------------- |
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243 // |
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244 void CBTEngSrvBBConnMgr::DisconnectAllLinksL( TCallBack& aCallBack ) |
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245 { |
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246 TRACE_FUNC_ENTRY |
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247 iCallBack = aCallBack; |
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248 RBTDevAddrArray addrArray; |
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249 GetConnectedAddressesL( addrArray ); |
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250 TInt err = KErrNone; |
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251 if( addrArray.Count() > 0 ) |
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252 { |
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253 err = iPhyLinks->DisconnectAll(); |
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254 } |
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255 else |
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256 { |
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257 err = KErrNotFound; |
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258 } |
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259 addrArray.Close(); |
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260 if( err && err != KErrInUse ) |
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261 { |
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262 // No connections, or something went wrong; just clean up |
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263 // and inform our client. |
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264 HandleDisconnectAllCompleteL( err ); |
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265 } |
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266 TRACE_FUNC_EXIT |
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267 } |
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268 |
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269 |
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270 // --------------------------------------------------------------------------- |
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271 // Request to disconnect all Bluetooth baseband connections. |
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272 // --------------------------------------------------------------------------- |
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273 // |
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274 void CBTEngSrvBBConnMgr::SetAutoSwitchOff( TBool aEnable, TCallBack& aCallBack ) |
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275 { |
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276 iAutoSwitchOff = aEnable; |
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277 iCallBack = aCallBack; |
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278 if( aEnable ) |
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279 { |
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280 TInt linkCount = 0; |
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281 TInt err = iLinkCountProperty.Get( linkCount ); |
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282 if( !err && !linkCount ) |
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283 { |
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284 iCallBack.CallBack(); |
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285 } |
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286 } |
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287 } |
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288 |
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289 |
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290 // --------------------------------------------------------------------------- |
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291 // From class MBluetoothPhysicalLinksNotifier. |
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292 // ?implementation_description |
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293 // --------------------------------------------------------------------------- |
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294 // |
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295 void CBTEngSrvBBConnMgr::HandleCreateConnectionCompleteL( TInt aErr ) |
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296 { |
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297 (void) aErr; |
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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 // From class MBluetoothPhysicalLinksNotifier. |
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303 // ?implementation_description |
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304 // --------------------------------------------------------------------------- |
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305 // |
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306 void CBTEngSrvBBConnMgr::HandleDisconnectCompleteL( TInt aErr ) |
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307 { |
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308 (void) aErr; |
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309 } |
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310 |
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311 |
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312 // --------------------------------------------------------------------------- |
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313 // From class MBluetoothPhysicalLinksNotifier. |
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314 // ?implementation_description |
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315 // --------------------------------------------------------------------------- |
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316 // |
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317 void CBTEngSrvBBConnMgr::HandleDisconnectAllCompleteL( TInt aErr ) |
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318 { |
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319 TRACE_FUNC_ARG( ( _L( "error: %d" ), aErr ) ) |
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320 delete iPhyLinks; |
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321 iPhyLinks = NULL; |
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322 iCallBack.CallBack(); // Inform our client. |
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323 (void) aErr; // There is no way to pass the error code; |
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324 // anyway our client is not interested.. |
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325 } |
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326 |
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327 |
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328 // --------------------------------------------------------------------------- |
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329 // From class MBTEngActiveObserver. |
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330 // ?implementation_description |
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331 // --------------------------------------------------------------------------- |
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332 // |
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333 void CBTEngSrvBBConnMgr::RequestCompletedL( CBTEngActive* aActive, TInt aId, |
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334 TInt aStatus ) |
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335 { |
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336 TRACE_FUNC_ARG( ( _L( "id: %d; status: %d" ), aId, aStatus ) ) |
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337 ASSERT( aId == KBTEngSrvBBConnId || aId == KBTEngSrvWlanStatusId ); |
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338 (void) aActive; |
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339 (void) aId; |
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340 if( aStatus != KErrPermissionDenied ) |
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341 { |
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342 // Ignore any other errors. |
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343 // First subscribe again, so that we don't miss any updates. |
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344 Subscribe(); |
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345 } |
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346 (void) ManageTopology( EFalse ); // Ignore result; nothing to do |
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347 // about it here. |
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348 TRACE_FUNC_EXIT |
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349 } |
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350 |
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351 |
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352 // --------------------------------------------------------------------------- |
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353 // From class MBTEngActiveObserver. |
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354 // Handles an error in RunL( i.e. RequestCompletedL). Does nothing, since our |
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355 // RunL cannot actually leave. |
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356 // --------------------------------------------------------------------------- |
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357 // |
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358 void CBTEngSrvBBConnMgr::HandleError( CBTEngActive* aActive, TInt aId, |
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359 TInt aError ) |
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360 { |
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361 TRACE_FUNC_ARG( ( _L( "id: %d; status: %d" ), aId, aError ) ) |
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362 (void) aActive; |
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363 (void) aId; |
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364 (void) aError; |
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365 } |
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366 |
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367 |
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368 // --------------------------------------------------------------------------- |
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369 // ?implementation_description |
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370 // --------------------------------------------------------------------------- |
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371 // |
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372 TBool CBTEngSrvBBConnMgr::GetWlanStatus() |
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373 { |
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374 TInt wlanStatus = 0; |
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375 TBool connected = EFalse; |
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376 if( iWlanSupported ) |
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377 { |
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378 TInt err = iWlanStatusProperty.Get( wlanStatus ); |
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379 if( err ) |
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380 { |
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381 wlanStatus = 0; // Reset just to be sure. |
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382 } |
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383 } |
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384 if( wlanStatus == EPSWlanIndicatorActive || |
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385 wlanStatus == EPSWlanIndicatorActiveSecure ) |
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386 { |
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387 connected = ETrue; |
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388 } |
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389 return connected; |
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390 } |