1 /* |
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2 * Copyright (c) 2006-2008 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: DUN USB plugin's listener |
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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 <e32std.h> |
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20 #include "DunUtils.h" |
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21 #include "DunUsbListen.h" |
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22 #include "DunDebug.h" |
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23 |
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24 const TUint KDunUsbDeviceStateMask = 0x00ff; |
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25 |
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26 // ======== MEMBER FUNCTIONS ======== |
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27 |
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28 // --------------------------------------------------------------------------- |
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29 // Two-phased constructor. |
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30 // --------------------------------------------------------------------------- |
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31 // |
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32 CDunUsbListen* CDunUsbListen::NewL( MDunServerCallback* aServer, |
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33 MDunListenCallback* aParent, |
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34 RUsb& aUsbServer ) |
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35 { |
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36 CDunUsbListen* self = new (ELeave) CDunUsbListen( aServer, |
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37 aParent, |
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38 aUsbServer ); |
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39 CleanupStack::PushL( self ); |
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40 self->ConstructL(); |
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41 CleanupStack::Pop( self ); |
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42 return self; |
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43 } |
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44 |
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45 // --------------------------------------------------------------------------- |
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46 // Destructor. |
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47 // --------------------------------------------------------------------------- |
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48 // |
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49 CDunUsbListen::~CDunUsbListen() |
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50 { |
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51 FTRACE(FPrint( _L( "CDunUsbListen::~CDunUsbListen()" ) )); |
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52 ResetData(); |
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53 FTRACE(FPrint( _L( "CDunUsbListen::~CDunUsbListen() complete" ) )); |
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54 } |
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55 |
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56 // --------------------------------------------------------------------------- |
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57 // Resets data to initial values |
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58 // --------------------------------------------------------------------------- |
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59 // |
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60 void CDunUsbListen::ResetData() |
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61 { |
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62 // APIs affecting this: |
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63 // IssueRequestL() |
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64 Stop(); |
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65 // Internal |
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66 Initialize(); |
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67 } |
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68 |
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69 // --------------------------------------------------------------------------- |
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70 // IssueRequest to USB server for device state change notifications |
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71 // --------------------------------------------------------------------------- |
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72 // |
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73 TInt CDunUsbListen::IssueRequestL() |
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74 { |
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75 FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL()" ))); |
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76 |
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77 if ( iUsbServer.Handle() == KNullHandle ) |
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78 { |
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79 FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL() (iUsbServer) complete" ) )); |
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80 User::Leave( KErrGeneral ); |
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81 } |
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82 |
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83 TUsbDeviceState usbDeviceState; |
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84 User::LeaveIfError( iUsbServer.GetDeviceState(usbDeviceState) ); |
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85 FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL() Usb device state = %X" ), usbDeviceState)); |
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86 if ( iDeviceState == EUsbDeviceStateUndefined ) |
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87 { |
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88 iDeviceState = usbDeviceState; |
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89 } |
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90 |
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91 // USB device state now set; if configured already, notify parent |
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92 // If not yet configured, start listening |
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93 |
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94 if ( usbDeviceState == EUsbDeviceStateConfigured ) |
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95 { |
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96 FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL() (already exists) complete" ) )); |
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97 return KErrAlreadyExists; |
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98 } |
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99 |
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100 Activate(); |
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101 |
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102 FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL() complete" ) )); |
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103 return KErrNone; |
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104 } |
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105 |
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106 // --------------------------------------------------------------------------- |
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107 // Stops listening |
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108 // --------------------------------------------------------------------------- |
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109 // |
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110 TInt CDunUsbListen::Stop() |
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111 { |
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112 FTRACE(FPrint( _L( "CDunUsbListen::Stop()" ) )); |
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113 if ( iListenState != EUsbListenStateListening ) |
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114 { |
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115 FTRACE(FPrint( _L( "CDunUsbListen::Stop() (not ready) complete" ) )); |
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116 return KErrNotReady; |
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117 } |
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118 iUsbServer.DeviceStateNotificationCancel(); |
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119 Cancel(); |
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120 iListenState = EUsbListenStateIdle; |
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121 iDeviceState = EUsbDeviceStateUndefined; |
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122 iDeviceStatePrev = EUsbDeviceStateUndefined; |
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123 FTRACE(FPrint( _L( "CDunUsbListen::Stop() complete" ) )); |
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124 return KErrNone; |
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125 } |
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126 |
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127 // --------------------------------------------------------------------------- |
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128 // CDunUsbListen::CDunUsbListen |
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129 // --------------------------------------------------------------------------- |
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130 // |
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131 CDunUsbListen::CDunUsbListen( MDunServerCallback* aServer, |
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132 MDunListenCallback* aParent, |
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133 RUsb& aUsbServer ) : |
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134 CActive( EPriorityStandard ), |
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135 iServer( aServer ), |
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136 iParent( aParent ), |
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137 iUsbServer( aUsbServer ) |
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138 { |
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139 Initialize(); |
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140 } |
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141 |
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142 // --------------------------------------------------------------------------- |
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143 // CDunUsbListen::ConstructL |
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144 // --------------------------------------------------------------------------- |
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145 // |
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146 void CDunUsbListen::ConstructL() |
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147 { |
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148 FTRACE(FPrint( _L( "CDunUsbListen::ConstructL()" ) )); |
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149 if ( !iServer || !iParent ) |
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150 { |
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151 User::Leave( KErrGeneral ); |
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152 } |
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153 CActiveScheduler::Add( this ); |
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154 FTRACE(FPrint( _L( "CDunUsbListen::ConstructL() complete" ) )); |
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155 } |
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156 |
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157 // --------------------------------------------------------------------------- |
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158 // Initializes this class |
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159 // --------------------------------------------------------------------------- |
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160 // |
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161 void CDunUsbListen::Initialize() |
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162 { |
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163 // Don't initialize iServer here (it is set through NewL) |
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164 // Don't initialize iParent here (it is set through NewL) |
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165 // Don't initialize iUsbServer here (it is set through NewL) |
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166 iDeviceState = EUsbDeviceStateUndefined; |
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167 iDeviceStatePrev = EUsbDeviceStateUndefined; |
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168 } |
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169 |
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170 // --------------------------------------------------------------------------- |
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171 // Activates listening request |
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172 // --------------------------------------------------------------------------- |
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173 // |
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174 TInt CDunUsbListen::Activate() |
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175 { |
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176 FTRACE(FPrint( _L( "CDunUsbListen::Activate()" ) )); |
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177 |
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178 if ( iListenState != EUsbListenStateIdle ) |
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179 { |
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180 FTRACE(FPrint( _L( "CDunUsbListen::Activate() (not ready) complete" ) )); |
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181 return KErrNotReady; |
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182 } |
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183 iDeviceStatePrev = iDeviceState; |
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184 iStatus = KRequestPending; |
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185 iUsbServer.DeviceStateNotification( KDunUsbDeviceStateMask, |
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186 iDeviceState, |
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187 iStatus ); |
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188 SetActive(); |
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189 iListenState = EUsbListenStateListening; |
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190 FTRACE(FPrint( _L( "CDunUsbListen::Activate() complete" ) )); |
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191 return KErrNone; |
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192 } |
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193 |
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194 // --------------------------------------------------------------------------- |
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195 // From class CActive. |
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196 // Called when read or write operation is ready. |
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197 // --------------------------------------------------------------------------- |
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198 // |
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199 void CDunUsbListen::RunL() |
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200 { |
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201 FTRACE(FPrint( _L( "CDunUsbListen::RunL() iStatus=%d"), iStatus.Int() )); |
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202 iListenState = EUsbListenStateIdle; |
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203 |
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204 if ( iStatus.Int() != KErrNone ) |
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205 { |
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206 FTRACE(FPrint( _L( "CDunUsbListen::RunL() (ERROR) complete" ))); |
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207 iServer->NotifyPluginCloseRequest( KDunUsbPluginUid, ETrue ); |
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208 return; |
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209 } |
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210 |
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211 FTRACE(FPrint( _L( "CDunUsbListen::RunL() Usb device state =%X, Issue request" ), iDeviceState)); |
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212 |
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213 TDunPluginState parentState = iServer->GetPluginStateByUid( KDunUsbPluginUid ); |
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214 |
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215 TInt retTemp = KErrNone; |
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216 if ( iDeviceState == EUsbDeviceStateConfigured && |
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217 iDeviceStatePrev != EUsbDeviceStateConfigured && |
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218 parentState != EDunStateChanneled ) |
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219 { |
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220 // USB has been connected&configured and we are in PC Suite mode |
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221 FTRACE(FPrint( _L( "CDunUsbListen::RunL() DeviceState is configured -> open connection" ) )); |
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222 TBool noFreeChans = EFalse; |
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223 // noFreeChans will be omitted (not needed to set to RComm) |
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224 retTemp = iParent->NotifyChannelAllocate( noFreeChans ); |
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225 if ( retTemp != KErrNone ) |
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226 { |
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227 FTRACE(FPrint( _L( "CDunUsbListen::RunL() channel allocation failed!" ) )); |
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228 iServer->NotifyPluginCloseRequest( KDunUsbPluginUid, ETrue ); |
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229 return; |
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230 } |
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231 } |
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232 else if ( iDeviceState < EUsbDeviceStateConfigured && |
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233 iDeviceStatePrev >= EUsbDeviceStateConfigured && |
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234 parentState == EDunStateChanneled ) |
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235 { |
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236 FTRACE(FPrint( _L( "CDunUsbListen::RunL() DeviceState is not configured -> close connection" ) )); |
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237 retTemp = iParent->NotifyChannelFree(); |
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238 if ( retTemp != KErrNone ) |
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239 { |
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240 FTRACE(FPrint( _L( "CDunUsbListen::RunL() channel free failed!" ) )); |
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241 iServer->NotifyPluginCloseRequest( KDunUsbPluginUid, ETrue ); |
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242 return; |
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243 } |
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244 } |
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245 |
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246 // Start listening again |
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247 Activate(); |
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248 |
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249 FTRACE(FPrint( _L( "CDunUsbListen::RunL() complete" ))); |
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250 } |
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251 |
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252 // --------------------------------------------------------------------------- |
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253 // From class CActive. |
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254 // Cancel current activity. |
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255 // --------------------------------------------------------------------------- |
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256 // |
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257 void CDunUsbListen::DoCancel() |
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258 { |
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259 } |
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