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1 /* |
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2 * Copyright (c) 2008-2010 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: Definitions needed for one "stream" of CDunTransporter |
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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 * TODO: When local media is of type RComm, listening on it is started with |
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20 * RComm::NotifyDataAvailable() call. Check that USB ACM port and Irda RCOMM |
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21 * (and any other new media in the future) behaves correctly so that when |
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22 * RComm::ReadOneOrMore() is issued, the read is issued immediately without |
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23 * checking for new data. If waiting for new data happens in this |
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24 * NotifyDataAvailable/ReadOneOrMore combination, raise a defect to Symbian. |
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25 */ |
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26 |
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27 #include "DunTransporter.h" |
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28 #include "DunUpstream.h" |
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29 #include "DunDebug.h" |
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30 |
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31 // --------------------------------------------------------------------------- |
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32 // Two-phased constructor. |
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33 // --------------------------------------------------------------------------- |
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34 // |
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35 CDunUpstream* CDunUpstream::NewL( MDunTransporterUtilityAux* aUtility ) |
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36 { |
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37 CDunUpstream* self = new (ELeave) CDunUpstream( aUtility ); |
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38 CleanupStack::PushL( self ); |
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39 self->ConstructL(); |
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40 CleanupStack::Pop( self ); |
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41 return self; |
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42 } |
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43 |
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44 // --------------------------------------------------------------------------- |
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45 // Destructor. |
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46 // --------------------------------------------------------------------------- |
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47 // |
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48 CDunUpstream::~CDunUpstream() |
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49 { |
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50 FTRACE(FPrint( _L("CDunUpstream::~CDunUpstream()" ))); |
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51 ResetData(); |
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52 FTRACE(FPrint( _L("CDunUpstream::~CDunUpstream() complete" ))); |
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53 } |
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54 |
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55 // --------------------------------------------------------------------------- |
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56 // Resets data to initial values |
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57 // --------------------------------------------------------------------------- |
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58 // |
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59 void CDunUpstream::ResetData() |
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60 { |
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61 // APIs affecting this: |
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62 // IssueRequest() |
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63 Stop(); |
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64 // InitializeForAtParsing() |
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65 delete iParseData.iAtCmdHandler; |
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66 iParseData.iAtCmdHandler = NULL; |
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67 // AddConnMonCallbackL() |
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68 iCallbacksR.Close(); |
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69 iCallbacksW.Close(); |
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70 // AddSkippedErrorL() |
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71 iOkErrorsR.Close(); |
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72 iOkErrorsW.Close(); |
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73 // Internal |
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74 Initialize(); |
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75 } |
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76 |
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77 // --------------------------------------------------------------------------- |
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78 // Sets activity callback for this stream |
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79 // --------------------------------------------------------------------------- |
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80 // |
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81 TInt CDunUpstream::SetActivityCallback( |
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82 MDunActivityManager* aActivityCallback ) |
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83 { |
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84 if ( !aActivityCallback ) |
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85 { |
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86 FTRACE(FPrint( _L("CDunUpstream::SetActivityCallback() (aActivityCallback) not initialized!" ) )); |
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87 return KErrGeneral; |
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88 } |
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89 if ( iActivityData.iActivityCallback ) |
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90 { |
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91 FTRACE(FPrint( _L("CDunUpstream::SetActivityCallback() (already exists) complete" ) )); |
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92 return KErrAlreadyExists; |
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93 } |
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94 iActivityData.iActivityCallback = aActivityCallback; |
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95 return KErrNone; |
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96 } |
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97 |
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98 // --------------------------------------------------------------------------- |
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99 // Initializes this stream for AT command notifications |
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100 // --------------------------------------------------------------------------- |
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101 // |
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102 TInt CDunUpstream::InitializeForAtParsing( |
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103 MDunStreamManipulator* aStreamCallback, |
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104 const TDesC8* aConnectionName, |
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105 MDunCmdModeMonitor* aCallbackUp, |
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106 MDunCmdModeMonitor* aCallbackDown ) |
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107 { |
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108 FTRACE(FPrint( _L("CDunUpstream::InitializeForAtParsing()" ) )); |
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109 if ( iParseData.iAtCmdHandler ) |
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110 { |
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111 FTRACE(FPrint( _L("CDunUpstream::InitializeForAtParsing() (already exists) complete" ) )); |
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112 return KErrAlreadyExists; |
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113 } |
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114 TInt retTrap = KErrNone; |
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115 CDunAtCmdHandler* atCmdHandler = NULL; |
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116 TRAP( retTrap, atCmdHandler = CDunAtCmdHandler::NewL(this, |
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117 aStreamCallback, |
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118 aConnectionName) ); |
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119 if ( retTrap != KErrNone ) |
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120 { |
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121 FTRACE(FPrint( _L("CDunUpstream::InitializeForAtParsing() (trapped!) complete" ) )); |
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122 return retTrap; |
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123 } |
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124 atCmdHandler->AddCmdModeCallback( aCallbackUp ); |
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125 atCmdHandler->AddCmdModeCallback( aCallbackDown ); |
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126 iParseData.iDataMode = EFalse; |
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127 iParseData.iAtCmdHandler = atCmdHandler; |
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128 FTRACE(FPrint( _L("CDunUpstream::InitializeForAtParsing() complete" ) )); |
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129 return KErrNone; |
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130 } |
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131 |
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132 // --------------------------------------------------------------------------- |
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133 // Starts upstream by issuing read request |
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134 // --------------------------------------------------------------------------- |
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135 // |
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136 TInt CDunUpstream::StartStream() |
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137 { |
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138 FTRACE(FPrint( _L("CDunUpstream::StartStream()" ) )); |
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139 if ( !iNetwork ) |
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140 { |
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141 FTRACE(FPrint( _L("CDunUpstream::StartStream() (iNetwork) not initialized!" ) )); |
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142 return KErrGeneral; |
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143 } |
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144 if ( !iComm && !iSocket ) |
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145 { |
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146 FTRACE(FPrint( _L("CDunUpstream::StartStream() (iComm&iSocket) not initialized!" ) )); |
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147 return KErrGeneral; |
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148 } |
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149 iOperationType = EDunOperationTypeRead; |
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150 TInt retVal = IssueRequest(); |
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151 FTRACE(FPrint( _L("CDunUpstream::StartStream() complete" ) )); |
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152 return retVal; |
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153 } |
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154 |
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155 // --------------------------------------------------------------------------- |
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156 // Stops transfer for read or write endpoints |
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157 // --------------------------------------------------------------------------- |
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158 // |
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159 TInt CDunUpstream::Stop() |
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160 { |
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161 FTRACE(FPrint( _L("CDunUpstream::Stop() (Dir=%d)" ), iDirection)); |
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162 // Don't stop CDunAtCmdHandler here as it is downstream related! |
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163 if ( iTransferState != EDunStateTransferring ) |
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164 { |
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165 FTRACE(FPrint( _L("CDunUpstream::Stop() (not ready) complete" ))); |
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166 return KErrNotReady; |
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167 } |
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168 // Stop only current operation |
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169 if ( iOperationType == EDunOperationTypeRead ) |
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170 { |
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171 if ( iComm ) |
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172 { |
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173 iComm->ReadCancel(); |
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174 FTRACE(FPrint( _L("CDunUpstream::Stop() (RComm) cancelled" ))); |
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175 } |
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176 else if ( iSocket ) |
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177 { |
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178 iSocket->CancelRecv(); |
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179 FTRACE(FPrint( _L("CDunUpstream::Stop() (RSocket) cancelled" ))); |
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180 } |
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181 } |
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182 else if ( iOperationType == EDunOperationTypeWrite ) |
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183 { |
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184 if ( iNetwork ) |
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185 { |
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186 iNetwork->WriteCancel(); |
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187 FTRACE(FPrint( _L("CDunUpstream::Stop() (Network) cancelled" ))); |
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188 } |
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189 } |
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190 Cancel(); |
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191 iTransferState = EDunStateIdle; |
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192 // Notify parent about inactivity |
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193 if ( iActivityData.iActivityCallback && iActivityData.iNotified ) |
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194 { |
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195 iActivityData.iActivityCallback->NotifyChannelInactivity(); |
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196 iActivityData.iNotified = EFalse; |
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197 } |
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198 FTRACE(FPrint( _L("CDunUpstream::Stop() complete" ))); |
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199 return KErrNone; |
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200 } |
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201 |
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202 // --------------------------------------------------------------------------- |
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203 // Data transmission state (if read completed) |
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204 // --------------------------------------------------------------------------- |
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205 // |
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206 TBool CDunUpstream::DataReadStatus() |
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207 { |
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208 return iActivityData.iDataRead; |
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209 } |
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210 |
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211 // --------------------------------------------------------------------------- |
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212 // CDunUpstream::CDunUpstream |
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213 // --------------------------------------------------------------------------- |
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214 // |
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215 CDunUpstream::CDunUpstream( MDunTransporterUtilityAux* aUtility ) : |
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216 iUtility( aUtility ) |
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217 { |
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218 Initialize(); |
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219 } |
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220 |
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221 // --------------------------------------------------------------------------- |
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222 // CDunUpstream::ConstructL |
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223 // --------------------------------------------------------------------------- |
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224 // |
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225 void CDunUpstream::ConstructL() |
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226 { |
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227 FTRACE(FPrint( _L("CDunUpstream::ConstructL()" ) )); |
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228 if ( !iUtility ) |
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229 { |
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230 User::Leave( KErrGeneral ); |
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231 } |
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232 FTRACE(FPrint( _L("CDunUpstream::ConstructL() complete" ) )); |
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233 } |
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234 |
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235 // --------------------------------------------------------------------------- |
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236 // Initializes this class |
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237 // --------------------------------------------------------------------------- |
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238 // |
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239 void CDunUpstream::Initialize() |
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240 { |
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241 // Don't initialize iUtility here (it is set through NewL) |
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242 iActivityData.iActivityCallback = NULL; |
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243 iActivityData.iDataRead = EFalse; |
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244 iActivityData.iNotified = EFalse; |
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245 iParseData.iDataMode = EFalse; |
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246 iParseData.iAtCmdHandler = NULL; |
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247 } |
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248 |
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249 // --------------------------------------------------------------------------- |
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250 // Issues transfer request for this stream |
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251 // --------------------------------------------------------------------------- |
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252 // |
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253 TInt CDunUpstream::IssueRequest() |
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254 { |
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255 // Set direction |
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256 iDirection = static_cast<TDunDirection>( EDunStreamTypeUpstream | iOperationType ); |
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257 |
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258 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (Dir=%d)" ), iDirection)); |
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259 |
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260 if ( iTransferState != EDunStateIdle ) |
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261 { |
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262 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (not ready) complete" ) )); |
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263 return KErrNotReady; |
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264 } |
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265 |
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266 if ( iOperationType == EDunOperationTypeRead ) |
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267 { |
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268 iBufferPtr->SetLength( iBufferPtr->MaxLength() ); |
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269 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() trying to read %d bytes... (Dir=%d)" ), iBufferPtr->Length(), iDirection)); |
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270 } |
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271 else // iOperationType == EDunOperationTypeWrite |
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272 { |
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273 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() writing %d bytes... (Dir=%d)" ), iBufferPtr->Length(), iDirection)); |
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274 } |
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275 |
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276 switch ( iDirection ) |
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277 { |
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278 case EDunReaderUpstream: |
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279 if ( iComm ) |
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280 { |
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281 iStatus = KRequestPending; |
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282 iComm->ReadOneOrMore( iStatus, *iBufferPtr ); |
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283 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() RComm ReadOneOrMore() requested" ) )); |
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284 } |
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285 else if ( iSocket ) |
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286 { |
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287 iStatus = KRequestPending; |
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288 iSocket->RecvOneOrMore( *iBufferPtr, 0, iStatus, iReadLengthSocket ); |
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289 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() RSocket RecvOneOrMore() requested" ) )); |
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290 } |
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291 else |
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292 { |
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293 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (ERROR) complete" ) )); |
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294 return KErrGeneral; |
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295 } |
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296 break; |
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297 case EDunWriterUpstream: |
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298 iStatus = KRequestPending; |
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299 iNetwork->Write( iStatus, *iBufferPtr ); |
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300 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() RComm Write() requested" ) )); |
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301 break; |
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302 default: |
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303 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (ERROR) complete" ) )); |
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304 return KErrGeneral; |
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305 } |
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306 |
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307 SetActive(); |
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308 iTransferState = EDunStateTransferring; |
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309 |
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310 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (Dir=%d) complete" ), iDirection)); |
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311 return KErrNone; |
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312 } |
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313 |
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314 // --------------------------------------------------------------------------- |
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315 // Processes data that was read |
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316 // --------------------------------------------------------------------------- |
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317 // |
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318 TBool CDunUpstream::ProcessReadData() |
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319 { |
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320 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData()" ))); |
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321 // The following will be transferred to Dataport |
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322 if ( iParseData.iDataMode ) |
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323 { |
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324 iOperationType = EDunOperationTypeWrite; |
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325 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData() (next write) complete" ))); |
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326 return ETrue; |
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327 } |
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328 if ( !iParseData.iAtCmdHandler ) // optional |
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329 { |
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330 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData() (no handler) complete" ))); |
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331 return ETrue; |
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332 } |
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333 // The following will be transferred to parser |
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334 TInt retTemp = KErrNone; |
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335 TBool moreNeeded = EFalse; |
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336 retTemp = iParseData.iAtCmdHandler->AddDataForParsing( *iBufferPtr, |
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337 moreNeeded ); |
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338 if ( retTemp!=KErrNone || !moreNeeded ) |
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339 { |
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340 // If error or no error but no more data needed, don't reissue |
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341 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData() (no reissue) complete" ))); |
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342 return EFalse; |
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343 } |
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344 // If no error and more data needed, reissue |
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345 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData() (reissue) complete" ))); |
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346 return ETrue; |
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347 } |
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348 |
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349 // --------------------------------------------------------------------------- |
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350 // Manages activity in a channel |
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351 // --------------------------------------------------------------------------- |
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352 // |
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353 TInt CDunUpstream::ManageChannelActivity() |
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354 { |
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355 FTRACE(FPrint( _L("CDunUpstream::ManageChannelActivity()" ))); |
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356 if ( iActivityData.iDataRead ) |
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357 { |
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358 FTRACE(FPrint( _L("CDunUpstream::ManageChannelActivity() (not ready) complete" ))); |
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359 return KErrNotReady; |
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360 } |
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361 iActivityData.iDataRead = ETrue; |
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362 if ( iActivityData.iActivityCallback && !iActivityData.iNotified ) |
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363 { |
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364 iActivityData.iActivityCallback->NotifyChannelActivity(); |
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365 iActivityData.iNotified = ETrue; |
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366 } |
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367 FTRACE(FPrint( _L("CDunUpstream::ManageChannelActivity() complete" ))); |
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368 return KErrNone; |
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369 } |
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370 |
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371 // --------------------------------------------------------------------------- |
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372 // From class CActive. |
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373 // Gets called when endpoint data read/write complete |
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374 // --------------------------------------------------------------------------- |
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375 // |
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376 void CDunUpstream::RunL() |
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377 { |
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378 FTRACE(FPrint( _L("CDunUpstream::RunL() (Dir=%d)" ), iDirection)); |
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379 iTransferState = EDunStateIdle; |
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380 |
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381 TBool isError; |
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382 TInt retTemp = iStatus.Int(); |
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383 TInt stop = ProcessErrorCondition( retTemp, isError ); |
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384 |
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385 if ( !stop ) // no real error detected -> continue |
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386 { |
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387 TBool reIssue = ETrue; |
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388 if ( !isError ) |
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389 { |
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390 if ( iOperationType == EDunOperationTypeRead ) |
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391 { |
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392 ManageChannelActivity(); |
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393 reIssue = ProcessReadData(); |
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394 } // if ( iOperationType == EDunOperationTypeRead ) |
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395 else // iOperationType == EDunOperationTypeWrite |
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396 { |
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397 iOperationType = EDunOperationTypeRead; |
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398 } |
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399 } // if ( !isError ) |
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400 |
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401 if ( reIssue ) |
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402 { |
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403 IssueRequest(); |
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404 } |
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405 |
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406 } // if ( !stop ) |
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407 else // stop -> tear down connection |
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408 { |
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409 FTRACE(FPrint( _L("CDunUpstream::RunL() stop" ))); |
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410 TDunConnectionReason connReason; |
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411 connReason.iReasonType = EDunReasonTypeRW; |
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412 connReason.iContext = GetMediaContext( EDunStreamTypeUpstream ); |
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413 connReason.iSignalType = 0; |
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414 connReason.iSignalHigh = EFalse; |
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415 connReason.iDirection = iDirection; |
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416 connReason.iErrorCode = retTemp; |
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417 if ( iOperationType == EDunOperationTypeRead ) |
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418 { |
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419 iUtility->DoNotifyConnectionNotOk( iComm, |
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420 iSocket, |
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421 connReason, |
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422 iCallbacksR ); |
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423 } |
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424 else // iOperationType == EDunOperationTypeWrite |
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425 { |
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426 iUtility->DoNotifyConnectionNotOk( iComm, |
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427 iSocket, |
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428 connReason, |
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429 iCallbacksW ); |
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430 } |
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431 } // else |
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432 |
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433 FTRACE(FPrint( _L("CDunUpstream::RunL() complete" ))); |
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434 } |
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435 |
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436 // --------------------------------------------------------------------------- |
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437 // From class CActive. |
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438 // Gets called on cancel |
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439 // --------------------------------------------------------------------------- |
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440 // |
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441 void CDunUpstream::DoCancel() |
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442 { |
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443 } |
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444 |
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445 // --------------------------------------------------------------------------- |
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446 // From class MDunAtCmdStatusReporter |
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447 // Notifies about parser's need to get more data |
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448 // --------------------------------------------------------------------------- |
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449 // |
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450 void CDunUpstream::NotifyParserNeedsMoreData() |
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451 { |
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452 FTRACE(FPrint( _L("CDunUpstream::NotifyParserNeedsMoreData()" ))); |
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453 IssueRequest(); // iOperationType must be read here (don't set) |
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454 FTRACE(FPrint( _L("CDunUpstream::NotifyParserNeedsMoreData() complete" ))); |
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455 } |
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456 |
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457 // --------------------------------------------------------------------------- |
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458 // From class MDunAtCmdStatusReporter |
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459 // Notifies about editor mode reply |
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460 // --------------------------------------------------------------------------- |
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461 // |
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462 void CDunUpstream::NotifyEditorModeReply( TBool aStart ) |
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463 { |
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464 FTRACE(FPrint( _L("CDunUpstream::NotifyEditorModeReply()" ))); |
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465 if ( iParseData.iDataMode ) |
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466 { |
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467 FTRACE(FPrint( _L("CDunUpstream::NotifyEditorModeReply() (not ready) complete" ))); |
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468 return; |
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469 } |
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470 // If start of editor mode then just reissue the read request |
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471 // If continuation then echo and reissue the read request |
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472 if ( aStart ) |
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473 { |
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474 IssueRequest(); |
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475 FTRACE(FPrint( _L("CDunUpstream::NotifyEditorModeReply() (start) complete" ))); |
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476 return; |
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477 } |
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478 iParseData.iAtCmdHandler->SendEchoCharacter( iBufferPtr, this ); |
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479 FTRACE(FPrint( _L("CDunUpstream::NotifyEditorModeReply() complete" ))); |
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480 } |
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481 |
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482 // --------------------------------------------------------------------------- |
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483 // From class MDunAtCmdHandler |
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484 // Starts URC message handling |
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485 // --------------------------------------------------------------------------- |
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486 // |
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487 TInt CDunUpstream::StartUrc() |
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488 { |
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489 FTRACE(FPrint( _L("CDunUpstream::StartUrc()" ))); |
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490 TInt retVal = KErrNone; |
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491 if ( iParseData.iAtCmdHandler ) // optional |
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492 { |
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493 retVal = iParseData.iAtCmdHandler->StartUrc(); |
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494 } |
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495 FTRACE(FPrint( _L("CDunUpstream::StartUrc() complete" ))); |
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496 return retVal; |
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497 } |
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498 |
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499 // --------------------------------------------------------------------------- |
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500 // From class MDunAtCmdHandler |
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501 // Stops AT command handling downstream related activity (also URC) |
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502 // --------------------------------------------------------------------------- |
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503 // |
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504 TInt CDunUpstream::StopAtCmdHandling() |
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505 { |
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506 FTRACE(FPrint( _L("CDunUpstream::StopAtCmdHandling()" ))); |
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507 TInt retVal = KErrNone; |
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508 if ( iParseData.iAtCmdHandler ) // optional |
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509 { |
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510 retVal = iParseData.iAtCmdHandler->StopUrc(); |
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511 if ( retVal != KErrNone ) |
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512 { |
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513 iParseData.iAtCmdHandler->Stop(); |
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514 FTRACE(FPrint( _L("CDunUpstream::StopAtCmdHandling() (iAtCmdHandler) complete" ))); |
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515 return retVal; |
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516 } |
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517 retVal = iParseData.iAtCmdHandler->Stop(); |
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518 } |
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519 FTRACE(FPrint( _L("CDunUpstream::StopAtCmdHandling() complete" ))); |
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520 return retVal; |
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521 } |
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522 |
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523 // --------------------------------------------------------------------------- |
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524 // From class MDunCmdModeMonitor. |
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525 // Notifies about command mode start |
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526 // --------------------------------------------------------------------------- |
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527 // |
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528 void CDunUpstream::NotifyCommandModeStart() |
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529 { |
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530 FTRACE(FPrint( _L("CDunUpstream::NotifyCommandModeStart()" ))); |
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531 iParseData.iDataMode = EFalse; |
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532 // Stop processing (just to be sure). |
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533 // This will stop any possibly pending operations of |
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534 // CDunAtCmdHandler and CDunAtUrcHandler. CDunDownstream will take care of |
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535 // clearing (and stopping) non-callback write queues. |
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536 StopAtCmdHandling(); |
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537 // Also restart the URC handling after the data mode |
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538 StartUrc(); |
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539 FTRACE(FPrint( _L("CDunUpstream::NotifyCommandModeStart() complete" ))); |
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540 } |
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541 |
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542 // --------------------------------------------------------------------------- |
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543 // From class MDunCmdModeMonitor. |
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544 // Notifies about command mode end |
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545 // --------------------------------------------------------------------------- |
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546 // |
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547 void CDunUpstream::NotifyCommandModeEnd() |
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548 { |
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549 FTRACE(FPrint( _L("CDunUpstream::NotifyCommandModeEnd()" ))); |
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550 iParseData.iDataMode = ETrue; |
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551 // Stop processing (mandatory). |
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552 // This will stop any possibly pending operations of |
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553 // CDunAtCmdHandler and CDunAtUrcHandler. CDunDownstream will take care of |
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554 // clearing (and stopping) non-callback write queues. |
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555 StopAtCmdHandling(); |
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556 // The follow is needed because stopping the AT command handling here |
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557 // prevents the subsequent AT command handling notification to reach the |
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558 // NotifyAtCmdHandlingEnd() in this class (the notification starts from |
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559 // CDunAtCmdPusher's SetToIdleAndNotifyEnd()). |
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560 // So here we have to do the block "if ( aStartIndex < 0 )" in function |
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561 // NotifyAtCmdHandlingEnd(). |
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562 IssueRequest(); |
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563 FTRACE(FPrint( _L("CDunUpstream::NotifyCommandModeEnd() complete" ))); |
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564 } |
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565 |
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566 // --------------------------------------------------------------------------- |
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567 // From class MDunAtCmdEchoer. |
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568 // Notifies about command mode end |
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569 // --------------------------------------------------------------------------- |
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570 // |
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571 void CDunUpstream::NotifyEchoComplete() |
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572 { |
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573 FTRACE(FPrint( _L("CDunUpstream::NotifyEchoComplete()" ))); |
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574 IssueRequest(); |
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575 FTRACE(FPrint( _L("CDunUpstream::NotifyEchoComplete() complete" ))); |
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576 } |