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1 // Copyright (c) 2009 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 "Eclipse Public 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.eclipse.org/legal/epl-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 // Implements a Session of a Symbian OS server for the RUsbMassStorage API |
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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 |
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20 /** |
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21 @file |
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22 @internalTechnology |
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23 */ |
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24 |
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25 #include <e32base.h> |
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26 #include <f32file.h> |
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27 |
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28 #include "usbmsshared.h" |
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29 #include "mstypes.h" |
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30 #include "msctypes.h" |
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31 #include "cusbmassstoragesession.h" |
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32 #include "cusbmassstoragecontroller.h" |
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33 #include "cusbmassstorageserver.h" |
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34 |
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35 #include "debug.h" |
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36 #include "msdebug.h" |
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37 |
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38 /** |
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39 Construct a Symbian OS session object. |
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40 |
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41 @param aServer Service the session will be a member of |
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42 @param aMessage The message from the client. |
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43 @return A new CUsbMassStorageSession object |
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44 */ |
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45 CUsbMassStorageSession* CUsbMassStorageSession::NewL(CUsbMassStorageServer& aServer) |
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46 { |
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47 __MSFNSLOG |
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48 CUsbMassStorageSession* r = new (ELeave) CUsbMassStorageSession(aServer); |
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49 CleanupStack::PushL(r); |
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50 r->ConstructL(); |
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51 CleanupStack::Pop(); |
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52 return r; |
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53 } |
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54 |
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55 /** |
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56 Constructor. |
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57 |
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58 @param aServer Service the session will be a member of |
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59 */ |
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60 CUsbMassStorageSession::CUsbMassStorageSession(CUsbMassStorageServer& aServer) |
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61 : iUsbMsServer(aServer) |
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62 { |
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63 __MSFNLOG |
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64 } |
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65 |
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66 |
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67 /** |
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68 2nd Phase Construction. |
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69 */ |
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70 void CUsbMassStorageSession::ConstructL() |
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71 { |
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72 __MSFNLOG |
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73 iUsbMsServer.IncrementSessionCount(); |
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74 if (iUsbMsServer.SessionCount() > 1) |
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75 { |
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76 __PRINT1(_L("\tiSessionCount: %d\n"), iUsbMsServer.SessionCount()); |
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77 // Only one session is allowed |
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78 User::Leave(KErrInUse); |
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79 } |
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80 } |
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81 |
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82 |
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83 /** |
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84 Destructor. |
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85 */ |
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86 CUsbMassStorageSession::~CUsbMassStorageSession() |
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87 { |
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88 __MSFNLOG |
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89 iUsbMsServer.DecrementSessionCount(); |
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90 } |
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91 |
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92 /** |
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93 Called when a message is received from the client. |
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94 |
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95 @param aMessage Message received from the client |
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96 */ |
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97 void CUsbMassStorageSession::ServiceL(const RMessage2& aMessage) |
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98 { |
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99 __MSFNLOG |
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100 DispatchMessageL(aMessage); |
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101 } |
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102 |
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103 /** |
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104 Handles the request (in the form of a the message) received from the client |
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105 |
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106 @internalTechnology |
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107 @param aMessage The received message |
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108 */ |
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109 void CUsbMassStorageSession::DispatchMessageL(const RMessage2& aMessage) |
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110 { |
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111 __MSFNLOG |
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112 TInt ret = KErrNone; |
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113 |
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114 switch (aMessage.Function()) |
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115 { |
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116 case EUsbMsStart: |
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117 ret = Start(aMessage); |
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118 break; |
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119 case EUsbMsStop: |
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120 ret = Stop(); |
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121 break; |
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122 case EUsbMsShutdown: |
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123 ret = Shutdown(); |
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124 break; |
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125 |
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126 default: |
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127 aMessage.Panic(KUsbMsCliPncCat, EUsbMsPanicIllegalIPC); |
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128 break; |
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129 } |
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130 |
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131 aMessage.Complete(ret); |
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132 } |
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133 |
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134 /** |
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135 Client request to start the device. |
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136 |
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137 @return Any error that occurred or KErrNone |
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138 */ |
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139 TInt CUsbMassStorageSession::Start(const RMessage2& aMessage) |
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140 { |
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141 __MSFNLOG |
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142 __PRINT(_L("CUsbMassStorageSession::Start\n")); |
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143 |
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144 TMassStorageConfig msConfig; |
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145 TRAPD(err, GetMsConfigL(aMessage, msConfig)); |
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146 if (err != KErrNone) |
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147 { |
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148 __PRINT(_L("Failed to get mass storage configuration data\n")); |
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149 return err; |
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150 } |
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151 |
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152 return iUsbMsServer.Controller().Start(msConfig); |
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153 } |
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154 |
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155 /** |
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156 Client request to stop the device. |
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157 |
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158 @return Any error that occurred or KErrNone |
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159 */ |
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160 TInt CUsbMassStorageSession::Stop() |
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161 { |
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162 __MSFNLOG |
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163 TInt err = iUsbMsServer.Controller().Stop(); |
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164 return err; |
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165 } |
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166 |
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167 /** |
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168 Client request to shut down the server |
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169 |
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170 @return KErrNone |
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171 */ |
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172 TInt CUsbMassStorageSession::Shutdown() |
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173 { |
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174 __MSFNLOG |
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175 CActiveScheduler::Stop(); |
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176 return KErrNone; |
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177 } |
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178 |
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179 /** |
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180 Get mass storage configuration data from the received message |
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181 */ |
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182 void CUsbMassStorageSession::GetMsConfigL(const RMessage2& aMessage, TMassStorageConfig& aMsStorage) |
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183 { |
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184 __MSFNLOG |
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185 aMessage.ReadL(0,aMsStorage.iVendorId); |
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186 aMessage.ReadL(1,aMsStorage.iProductId); |
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187 aMessage.ReadL(2,aMsStorage.iProductRev); |
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188 } |