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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 Bluetooth 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 <btsdp.h> |
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20 #include <e32std.h> |
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21 #include <bt_sock.h> |
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22 #include <btengdiscovery.h> |
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23 #include "DunPlugin.h" |
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24 #include "DunBtListen.h" |
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25 #include "DunBtPlugin.h" |
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26 #include "DunDebug.h" |
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27 |
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28 const TInt KListenQueSize = 1; |
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29 const TInt KDunFixedChannel = 22; // Hack/kludge for Apple Bug ID 6527598 |
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30 |
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31 //Service Class Bits supported by DUN |
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32 static const TUint16 KCoDDunServiceClass = EMajorServiceTelephony | EMajorServiceNetworking; |
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33 |
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34 // ======== MEMBER FUNCTIONS ======== |
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35 |
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36 // --------------------------------------------------------------------------- |
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37 // Two-phased constructor. |
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38 // --------------------------------------------------------------------------- |
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39 // |
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40 CDunBtListen* CDunBtListen::NewL( MDunServerCallback* aServer, |
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41 MDunListenCallback* aParent, |
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42 CDunTransporter* aTransporter, |
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43 TBtPortEntity& aEntity ) |
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44 { |
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45 CDunBtListen* self = new (ELeave) CDunBtListen( aServer, |
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46 aParent, |
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47 aTransporter, |
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48 aEntity ); |
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49 CleanupStack::PushL( self ); |
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50 self->ConstructL(); |
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51 CleanupStack::Pop( self ); |
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52 return self; |
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53 } |
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54 |
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55 // --------------------------------------------------------------------------- |
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56 // Destructor. |
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57 // --------------------------------------------------------------------------- |
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58 // |
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59 CDunBtListen::~CDunBtListen() |
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60 { |
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61 FTRACE(FPrint( _L("CDunBtListen::~CDunBtListen()") )); |
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62 ResetData(); |
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63 FTRACE(FPrint( _L("CDunBtListen::~CDunBtListen() complete") )); |
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64 } |
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65 |
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66 // --------------------------------------------------------------------------- |
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67 // Resets data to initial values |
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68 // --------------------------------------------------------------------------- |
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69 // |
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70 void CDunBtListen::ResetData() |
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71 { |
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72 // APIs affecting this: |
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73 // IssueRequestL() |
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74 Stop(); |
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75 StopServiceAdvertisement(); |
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76 // NewL() |
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77 iTransporter->FreeAdvertisementMonitor( KDunBtPluginUid, this ); |
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78 delete iDiscovery; |
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79 iDiscovery = NULL; |
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80 if ( iSockServer.Handle() != KNullHandle ) |
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81 { |
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82 iSockServer.Close(); |
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83 } |
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84 // Internal |
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85 Initialize(); |
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86 } |
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87 |
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88 // --------------------------------------------------------------------------- |
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89 // Registers itself to SDP and BT manager, opens a socket |
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90 // and starts to listen it. |
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91 // --------------------------------------------------------------------------- |
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92 // |
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93 void CDunBtListen::IssueRequestL() |
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94 { |
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95 FTRACE(FPrint( _L( "CDunBtListen::IssueRequestL()" ) )); |
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96 |
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97 if ( iListenState == EBtListenStateListening ) |
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98 { |
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99 FTRACE(FPrint( _L( "CDunBtListen::IssueRequestL() (already active) complete" ) )); |
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100 User::Leave( KErrNotReady ); |
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101 } |
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102 |
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103 TBool advertise = iTransporter->AdvertisementStatus(); |
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104 if ( !advertise ) |
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105 { |
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106 // Return silently here as CDunTransporter will notify later |
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107 return; |
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108 } |
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109 |
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110 TBool inUse = EFalse; |
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111 TInt numOfChans = 0; |
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112 TInt retTemp = StartServiceAdvertisement( inUse ); |
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113 if ( retTemp != KErrNone ) |
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114 { |
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115 if ( inUse ) |
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116 { |
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117 numOfChans = iTransporter->GetNumberOfAllocatedChannelsByUid( |
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118 KDunBtPluginUid ); |
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119 if ( numOfChans == 0) |
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120 { |
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121 // No channels so parent can't reissue requests of this object |
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122 // This is fatal case -> leave. |
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123 // NOTE: To add full support for this case a poller (timer) is |
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124 // needed that polls for free RFCOMM channel by given interval. |
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125 User::Leave( retTemp ); |
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126 } |
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127 // If in use and parent has channels then just fail silently. |
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128 // Let this object to wait until parent finds new resources. |
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129 FTRACE(FPrint( _L( "CDunBtListen::IssueRequestL() complete" ) )); |
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130 return; |
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131 } |
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132 FTRACE(FPrint( _L( "CDunBtListen::IssueRequestL() (failed!) complete" ) )); |
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133 User::Leave( retTemp ); |
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134 } |
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135 |
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136 // Not already active here so start listening |
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137 // First open blank data socket |
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138 retTemp = iEntity.iBTPort.Open( iSockServer ); |
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139 if ( retTemp != KErrNone ) |
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140 { |
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141 FTRACE(FPrint( _L( "CDunBtListen::IssueRequestL() (ERROR) complete (%d)" ), retTemp)); |
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142 User::Leave( retTemp ); |
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143 } |
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144 iStatus = KRequestPending; |
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145 iListenSocket.Accept( iEntity.iBTPort, iStatus ); |
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146 SetActive(); |
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147 iListenState = EBtListenStateListening; |
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148 |
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149 FTRACE(FPrint( _L( "CDunBtListen::IssueRequestL() complete") )); |
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150 } |
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151 |
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152 // --------------------------------------------------------------------------- |
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153 // Stops listening |
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154 // --------------------------------------------------------------------------- |
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155 // |
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156 TInt CDunBtListen::Stop() |
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157 { |
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158 FTRACE(FPrint( _L( "CDunBtListen::Stop()") )); |
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159 if ( iListenState != EBtListenStateListening ) |
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160 { |
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161 FTRACE(FPrint( _L("CDunBtListen::Stop() (not ready) complete" ))); |
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162 return KErrNotReady; |
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163 } |
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164 iListenSocket.CancelAccept(); |
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165 Cancel(); |
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166 iListenState = EBtListenStateIdle; |
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167 FTRACE(FPrint( _L( "CDunBtListen::Stop() complete") )); |
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168 return KErrNone; |
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169 } |
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170 |
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171 // --------------------------------------------------------------------------- |
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172 // CDunBtListen::CDunBtListen |
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173 // --------------------------------------------------------------------------- |
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174 // |
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175 CDunBtListen::CDunBtListen( MDunServerCallback* aServer, |
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176 MDunListenCallback* aParent, |
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177 CDunTransporter* aTransporter, |
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178 TBtPortEntity& aEntity ) : |
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179 CActive( EPriorityStandard ), |
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180 iServer( aServer ), |
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181 iParent( aParent ), |
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182 iTransporter( aTransporter ), |
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183 iEntity( aEntity ) |
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184 { |
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185 Initialize(); |
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186 } |
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187 |
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188 // --------------------------------------------------------------------------- |
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189 // CDunBtListen::ConstructL |
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190 // --------------------------------------------------------------------------- |
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191 // |
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192 void CDunBtListen::ConstructL() |
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193 { |
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194 FTRACE(FPrint(_L("CDunBtListen::ConstructL()"))); |
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195 if ( !iServer || !iParent || !iTransporter ) |
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196 { |
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197 User::Leave( KErrGeneral ); |
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198 } |
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199 |
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200 CBTEngDiscovery* discovery = CBTEngDiscovery::NewLC(); |
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201 FTRACE(FPrint(_L("CDunBtListen::ConstructL: iSockServer.Connect"))); |
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202 User::LeaveIfError( iSockServer.Connect() ); |
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203 |
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204 // Set advertisement monitor |
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205 iTransporter->SetAdvertisementMonitorL( KDunBtPluginUid, this ); |
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206 |
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207 // Then we are ready to start listening and accepting incoming connection |
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208 // requests. |
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209 CleanupStack::Pop( discovery ); |
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210 iDiscovery = discovery; |
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211 CActiveScheduler::Add( this ); |
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212 FTRACE(FPrint(_L("CDunBtListen::ConstructL() complete"))); |
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213 } |
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214 |
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215 // --------------------------------------------------------------------------- |
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216 // Initializes this class |
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217 // --------------------------------------------------------------------------- |
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218 // |
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219 void CDunBtListen::Initialize() |
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220 { |
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221 // Don't initialize iServer here (it is set through NewL) |
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222 // Don't initialize iParent here (it is set through NewL) |
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223 // Don't initialize iTransporter here (it is set through NewL) |
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224 // Don't initialize iEntity here (it is set through NewL) |
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225 iListenState = EBtListenStateIdle; |
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226 iDiscovery = NULL; |
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227 iChannelNum = 0; |
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228 iSDPHandleDun = 0; |
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229 } |
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230 |
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231 // --------------------------------------------------------------------------- |
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232 // Starts dialup service advertisement |
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233 // --------------------------------------------------------------------------- |
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234 // |
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235 TInt CDunBtListen::StartServiceAdvertisement( TBool& aInUse ) |
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236 { |
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237 FTRACE(FPrint( _L( "CDunBtListen::StartServiceAdvertisement()" ) )); |
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238 |
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239 TInt retTemp = ReserveLocalChannel( iSockServer, |
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240 iListenSocket, |
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241 iChannelNum, |
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242 aInUse ); |
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243 if ( retTemp != KErrNone ) |
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244 { |
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245 FTRACE(FPrint( _L( "CDunBtListen::StartServiceAdvertisement() (ERROR) complete" ) )); |
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246 return retTemp; |
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247 } |
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248 |
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249 // Now RFCOMM channel number of the next data socket must be the same as |
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250 // the current listener's RFCOMM channel number. Set that now. |
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251 iEntity.iChannelNum = iChannelNum; |
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252 |
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253 // Register SDP record |
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254 iSDPHandleDun = 0; |
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255 retTemp = iDiscovery->RegisterSdpRecord( KDialUpNetworkingUUID, |
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256 iChannelNum, |
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257 iSDPHandleDun ); |
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258 if ( retTemp != KErrNone ) |
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259 { |
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260 FTRACE(FPrint( _L( "CDunBtListen::StartServiceAdvertisement() (failed!) complete (%d)" ), retTemp)); |
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261 return retTemp; |
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262 } |
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263 FTRACE(FPrint( _L( "CDunBtListen::StartServiceAdvertisement() complete" ) )); |
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264 return KErrNone; |
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265 } |
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266 |
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267 // --------------------------------------------------------------------------- |
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268 // Stops dialup service advertisement |
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269 // --------------------------------------------------------------------------- |
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270 // |
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271 TInt CDunBtListen::StopServiceAdvertisement() |
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272 { |
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273 FTRACE(FPrint( _L( "CDunBtListen::StopServiceAdvertisement()" ) )); |
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274 if ( !iDiscovery ) |
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275 { |
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276 FTRACE(FPrint( _L( "CDunBtListen::StopServiceAdvertisement() (iDiscovery) not initialized!" ) )); |
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277 return KErrGeneral; |
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278 } |
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279 if ( iSDPHandleDun != 0 ) |
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280 { |
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281 TInt retTemp = iDiscovery->DeleteSdpRecord( iSDPHandleDun ); |
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282 FTRACE(FPrint( _L( "CDunBtListen::StopServiceAdvertisement() record closed (%d)" ), retTemp )); |
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283 iSDPHandleDun = 0; |
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284 } |
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285 if ( iListenSocket.SubSessionHandle() ) |
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286 { |
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287 iListenSocket.Close(); |
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288 } |
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289 FTRACE(FPrint( _L( "CDunBtListen::StopServiceAdvertisement() complete" ) )); |
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290 return KErrNone; |
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291 } |
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292 |
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293 // --------------------------------------------------------------------------- |
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294 // Method which reserves local RFCOMM channel (from possible channels 1-30) |
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295 // and returns it to client. |
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296 // --------------------------------------------------------------------------- |
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297 // |
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298 TInt CDunBtListen::ReserveLocalChannel( RSocketServ& aSocketServ, |
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299 RSocket& aListenSocket, |
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300 TUint& aChannelNum, |
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301 TBool& aInUse ) |
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302 { |
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303 FTRACE(FPrint(_L("CDunBtListen::ReserveLocalChannel()"))); |
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304 aInUse = EFalse; |
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305 if ( aListenSocket.SubSessionHandle() ) |
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306 { |
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307 FTRACE(FPrint(_L("CDunBtListen::ReserveLocalChannel() (open socket!) complete"))); |
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308 return KErrArgument; |
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309 } |
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310 TInt retTemp; |
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311 TProtocolDesc pInfo; |
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312 retTemp = aSocketServ.FindProtocol( TProtocolName(KRFCOMMDesC), pInfo ); |
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313 if ( retTemp != KErrNone ) |
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314 { |
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315 FTRACE(FPrint(_L("CDunBtListen::ReserveLocalChannel() (FindProtocol failed) complete (%d)"), retTemp)); |
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316 return retTemp; |
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317 } |
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318 retTemp = aListenSocket.Open( aSocketServ, |
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319 pInfo.iAddrFamily, |
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320 pInfo.iSockType, |
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321 pInfo.iProtocol ); |
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322 if ( retTemp != KErrNone ) |
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323 { |
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324 FTRACE(FPrint(_L("CDunBtListen::ReserveLocalChannel() (Open failed) complete (%d)"), retTemp)); |
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325 return retTemp; |
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326 } |
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327 TRfcommSockAddr addr; |
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328 TBTServiceSecurity sec; |
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329 sec.SetAuthentication( ETrue ); |
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330 sec.SetAuthorisation( ETrue ); |
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331 sec.SetEncryption( ETrue ); |
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332 sec.SetPasskeyMinLength( 0 ); |
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333 addr.SetSecurity( sec ); |
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334 addr.SetPort( KRfcommPassiveAutoBind ); |
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335 // When fix from Apple, replace the following with |
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336 // "retTemp = aListenSocket.Bind( addr );" |
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337 retTemp = DoExtendedBind( aListenSocket, addr ); |
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338 if ( retTemp != KErrNone ) |
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339 { |
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340 aListenSocket.Close(); |
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341 aInUse = ETrue; |
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342 FTRACE(FPrint(_L("CDunBtListen::ReserveLocalChannel() Bind() complete (%d)"), retTemp)); |
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343 return KErrInUse; |
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344 } |
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345 aChannelNum = aListenSocket.LocalPort(); |
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346 |
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347 // We try to set the Telephony and Networking bits in our service class. If this fails we |
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348 // ignore it, as it's better to carry on without it than to fail to start listening. |
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349 aListenSocket.SetOpt(KBTRegisterCodService, KSolBtRFCOMM, KCoDDunServiceClass); |
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350 |
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351 retTemp = aListenSocket.Listen( KListenQueSize ); |
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352 if ( retTemp != KErrNone ) |
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353 { |
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354 aListenSocket.Close(); |
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355 FTRACE(FPrint(_L("CDunBtListen::ReserveLocalChannel() Listen() complete (%d)"), retTemp)); |
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356 return retTemp; |
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357 } |
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358 FTRACE(FPrint(_L("CDunBtListen::ReserveLocalChannel() complete (%d)"), aChannelNum)); |
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359 return KErrNone; |
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360 } |
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361 |
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362 // --------------------------------------------------------------------------- |
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363 // Tries to bind to a fixed port and if that fails with KRfcommPassiveAutoBind. |
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364 // This is for spec breaking solutions like the OSX Leopard. |
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365 // --------------------------------------------------------------------------- |
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366 // |
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367 TInt CDunBtListen::DoExtendedBind( RSocket& aListenSocket, |
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368 TRfcommSockAddr& aSockAddr ) |
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369 { |
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370 FTRACE(FPrint(_L("CDunBtListen::DoExtendedBind()"))); |
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371 if ( !aListenSocket.SubSessionHandle() ) |
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372 { |
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373 FTRACE(FPrint(_L("CDunBtListen::DoExtendedBind() (closed socket!) complete"))); |
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374 return KErrGeneral; |
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375 } |
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376 TRfcommSockAddr fixedAddr = aSockAddr; |
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377 fixedAddr.SetPort( KDunFixedChannel ); |
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378 TInt retTemp = aListenSocket.Bind( fixedAddr ); |
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379 if ( retTemp == KErrNone ) |
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380 { |
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381 FTRACE(FPrint(_L("CDunBtListen::DoExtendedBind() complete"))); |
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382 return KErrNone; |
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383 } |
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384 TInt retVal = aListenSocket.Bind( aSockAddr ); |
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385 FTRACE(FPrint(_L("CDunBtListen::DoExtendedBind() complete"))); |
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386 return retVal; |
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387 } |
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388 |
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389 // --------------------------------------------------------------------------- |
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390 // From class CActive. |
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391 // Called when a service is requested via BT. |
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392 // --------------------------------------------------------------------------- |
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393 // |
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394 void CDunBtListen::RunL() |
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395 { |
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396 FTRACE(FPrint( _L( "CDunBtListen::RunL()" ) )); |
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397 iListenState = EBtListenStateIdle; |
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398 |
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399 StopServiceAdvertisement(); |
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400 |
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401 TInt retTemp = iStatus.Int(); |
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402 if ( retTemp != KErrNone ) |
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403 { |
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404 FTRACE(FPrint( _L( "CDunBtListen::RunL() (ERROR) complete (%d)" ), retTemp)); |
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405 iServer->NotifyPluginCloseRequest( KDunBtPluginUid, ETrue ); |
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406 return; |
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407 } |
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408 // Notify new connection |
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409 TBool noFreeChans = EFalse; |
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410 retTemp = iParent->NotifyChannelAllocate( noFreeChans ); |
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411 if ( retTemp != KErrNone ) |
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412 { |
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413 FTRACE(FPrint( _L( "CDunBtListen::RunL() channel allocation failed! (%d)" ), retTemp)); |
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414 // Other error than no free channels, close plugin now |
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415 if ( !noFreeChans ) |
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416 { |
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417 iServer->NotifyPluginCloseRequest( KDunBtPluginUid, ETrue ); |
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418 } |
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419 return; |
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420 } |
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421 |
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422 // Don't restart listening here. Request is issued via |
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423 // NotifyAdvertisementStart() |
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424 |
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425 FTRACE(FPrint( _L( "CDunBtListen::RunL() complete" ) )); |
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426 } |
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427 |
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428 // --------------------------------------------------------------------------- |
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429 // From class CActive. |
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430 // Cancel current activity. |
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431 // --------------------------------------------------------------------------- |
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432 // |
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433 void CDunBtListen::DoCancel() |
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434 { |
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435 } |
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436 |
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437 // --------------------------------------------------------------------------- |
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438 // From class MDunServAdvMon. |
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439 // Gets called when advertisement status changes to start. |
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440 // --------------------------------------------------------------------------- |
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441 // |
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442 void CDunBtListen::NotifyAdvertisementStart( TBool aCreation ) |
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443 { |
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444 FTRACE(FPrint( _L( "CDunBtListen::NotifyAdvertisementStart()" ) )); |
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445 // Remove the "if" below when fix comes from Apple |
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446 if ( !aCreation ) |
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447 { |
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448 TRAP_IGNORE( IssueRequestL() ); |
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449 } |
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450 FTRACE(FPrint( _L( "CDunBtListen::NotifyAdvertisementStart() complete" ) )); |
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451 } |
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452 |
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453 // --------------------------------------------------------------------------- |
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454 // From class MDunServAdvMon. |
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455 // Gets called when advertisement status changes to end. |
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456 // --------------------------------------------------------------------------- |
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457 // |
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458 void CDunBtListen::NotifyAdvertisementEnd() |
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459 { |
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460 FTRACE(FPrint( _L( "CDunBtListen::NotifyAdvertisementEnd()" ) )); |
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461 Stop(); |
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462 StopServiceAdvertisement(); |
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463 FTRACE(FPrint( _L( "CDunBtListen::NotifyAdvertisementEnd() complete" ) )); |
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464 } |