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