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1 /* |
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2 * Copyright (c) 2008-2009 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.iParseNeeded = ETrue; |
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128 iParseData.iHandling = EFalse; |
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129 iParseData.iAtCmdHandler = atCmdHandler; |
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130 FTRACE(FPrint( _L("CDunUpstream::InitializeForAtParsing() complete" ) )); |
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131 return KErrNone; |
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132 } |
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133 |
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134 // --------------------------------------------------------------------------- |
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135 // Starts upstream by issuing read request |
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136 // --------------------------------------------------------------------------- |
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137 // |
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138 TInt CDunUpstream::StartStream() |
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139 { |
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140 FTRACE(FPrint( _L("CDunUpstream::StartStream()" ) )); |
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141 if ( !iNetwork ) |
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142 { |
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143 FTRACE(FPrint( _L("CDunUpstream::StartStream() (iNetwork) not initialized!" ) )); |
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144 return KErrGeneral; |
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145 } |
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146 if ( !iComm && !iSocket ) |
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147 { |
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148 FTRACE(FPrint( _L("CDunUpstream::StartStream() (iComm&iSocket) not initialized!" ) )); |
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149 return KErrGeneral; |
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150 } |
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151 iOperationType = EDunOperationTypeRead; |
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152 TInt retVal = IssueRequest(); |
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153 FTRACE(FPrint( _L("CDunUpstream::StartStream() complete" ) )); |
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154 return retVal; |
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155 } |
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156 |
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157 // --------------------------------------------------------------------------- |
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158 // Stops transfer for read or write endpoints |
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159 // --------------------------------------------------------------------------- |
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160 // |
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161 TInt CDunUpstream::Stop() |
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162 { |
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163 FTRACE(FPrint( _L("CDunUpstream::Stop() (Dir=%d)" ), iDirection)); |
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164 // Don't stop CDunAtCmdHandler here as it is downstream related! |
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165 if ( iTransferState != EDunStateTransferring ) |
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166 { |
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167 FTRACE(FPrint( _L("CDunUpstream::Stop() (not ready) complete" ))); |
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168 return KErrNotReady; |
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169 } |
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170 // Stop only current operation |
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171 if ( iOperationType == EDunOperationTypeRead ) |
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172 { |
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173 if ( iComm ) |
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174 { |
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175 iComm->ReadCancel(); |
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176 FTRACE(FPrint( _L("CDunUpstream::Stop() (RComm) cancelled" ))); |
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177 } |
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178 else if ( iSocket ) |
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179 { |
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180 iSocket->CancelRecv(); |
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181 FTRACE(FPrint( _L("CDunUpstream::Stop() (RSocket) cancelled" ))); |
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182 } |
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183 } |
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184 else if ( iOperationType == EDunOperationTypeWrite ) |
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185 { |
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186 if ( iNetwork ) |
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187 { |
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188 iNetwork->WriteCancel(); |
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189 FTRACE(FPrint( _L("CDunUpstream::Stop() (Network) cancelled" ))); |
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190 } |
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191 } |
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192 Cancel(); |
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193 iTransferState = EDunStateIdle; |
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194 // Notify parent about inactivity |
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195 if ( iActivityData.iActivityCallback && iActivityData.iNotified ) |
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196 { |
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197 iActivityData.iActivityCallback->NotifyChannelInactivity(); |
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198 iActivityData.iNotified = EFalse; |
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199 } |
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200 FTRACE(FPrint( _L("CDunUpstream::Stop() complete" ))); |
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201 return KErrNone; |
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202 } |
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203 |
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204 // --------------------------------------------------------------------------- |
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205 // Data transmission state (if read completed) |
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206 // --------------------------------------------------------------------------- |
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207 // |
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208 TBool CDunUpstream::DataReadStatus() |
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209 { |
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210 return iActivityData.iDataRead; |
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211 } |
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212 |
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213 // --------------------------------------------------------------------------- |
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214 // CDunUpstream::CDunUpstream |
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215 // --------------------------------------------------------------------------- |
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216 // |
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217 CDunUpstream::CDunUpstream( MDunTransporterUtilityAux* aUtility ) : |
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218 iUtility( aUtility ) |
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219 { |
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220 Initialize(); |
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221 } |
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222 |
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223 // --------------------------------------------------------------------------- |
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224 // CDunUpstream::ConstructL |
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225 // --------------------------------------------------------------------------- |
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226 // |
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227 void CDunUpstream::ConstructL() |
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228 { |
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229 FTRACE(FPrint( _L("CDunUpstream::ConstructL()" ) )); |
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230 if ( !iUtility ) |
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231 { |
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232 User::Leave( KErrGeneral ); |
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233 } |
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234 FTRACE(FPrint( _L("CDunUpstream::ConstructL() complete" ) )); |
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235 } |
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236 |
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237 // --------------------------------------------------------------------------- |
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238 // Initializes this class |
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239 // --------------------------------------------------------------------------- |
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240 // |
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241 void CDunUpstream::Initialize() |
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242 { |
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243 // Don't initialize iUtility here (it is set through NewL) |
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244 iActivityData.iActivityCallback = NULL; |
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245 iActivityData.iDataRead = EFalse; |
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246 iActivityData.iNotified = EFalse; |
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247 iParseData.iDataMode = EFalse; |
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248 iParseData.iParseNeeded = EFalse; |
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249 iParseData.iHandling = EFalse; |
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250 iParseData.iAtCmdHandler = NULL; |
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251 } |
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252 |
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253 // --------------------------------------------------------------------------- |
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254 // Issues transfer request for this stream |
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255 // --------------------------------------------------------------------------- |
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256 // |
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257 TInt CDunUpstream::IssueRequest() |
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258 { |
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259 // Set direction |
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260 iDirection = static_cast<TDunDirection>( EDunStreamTypeUpstream | iOperationType ); |
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261 |
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262 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (Dir=%d)" ), iDirection)); |
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263 |
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264 if ( iTransferState != EDunStateIdle ) |
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265 { |
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266 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (not ready) complete" ) )); |
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267 return KErrNotReady; |
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268 } |
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269 |
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270 if ( iOperationType == EDunOperationTypeRead ) |
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271 { |
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272 iBufferPtr->SetLength( iBufferPtr->MaxLength() ); |
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273 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() trying to read %d bytes... (Dir=%d)" ), iBufferPtr->Length(), iDirection)); |
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274 } |
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275 else // iOperationType == EDunOperationTypeWrite |
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276 { |
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277 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() writing %d bytes... (Dir=%d)" ), iBufferPtr->Length(), iDirection)); |
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278 } |
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279 |
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280 switch ( iDirection ) |
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281 { |
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282 case EDunReaderUpstream: |
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283 if ( iComm ) |
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284 { |
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285 iStatus = KRequestPending; |
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286 iComm->ReadOneOrMore( iStatus, *iBufferPtr ); |
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287 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() RComm ReadOneOrMore() requested" ) )); |
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288 } |
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289 else if ( iSocket ) |
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290 { |
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291 iStatus = KRequestPending; |
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292 iSocket->RecvOneOrMore( *iBufferPtr, 0, iStatus, iReadLengthSocket ); |
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293 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() RSocket RecvOneOrMore() requested" ) )); |
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294 } |
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295 else |
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296 { |
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297 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (ERROR) complete" ) )); |
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298 return KErrGeneral; |
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299 } |
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300 break; |
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301 case EDunWriterUpstream: |
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302 iStatus = KRequestPending; |
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303 iNetwork->Write( iStatus, *iBufferPtr ); |
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304 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() RComm Write() requested" ) )); |
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305 break; |
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306 default: |
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307 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (ERROR) complete" ) )); |
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308 return KErrGeneral; |
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309 } |
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310 |
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311 SetActive(); |
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312 iTransferState = EDunStateTransferring; |
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313 |
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314 FTRACE(FPrint( _L("CDunUpstream::IssueRequest() (Dir=%d) complete" ), iDirection)); |
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315 return KErrNone; |
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316 } |
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317 |
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318 // --------------------------------------------------------------------------- |
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319 // Processes data that was read |
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320 // --------------------------------------------------------------------------- |
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321 // |
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322 TBool CDunUpstream::ProcessReadData() |
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323 { |
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324 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData()" ))); |
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325 // The following will be transferred to Dataport |
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326 if ( iParseData.iDataMode || !iParseData.iParseNeeded ) |
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327 { |
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328 iOperationType = EDunOperationTypeWrite; |
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329 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData() (next write) complete" ))); |
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330 return ETrue; |
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331 } |
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332 if ( !iParseData.iAtCmdHandler ) // optional |
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333 { |
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334 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData() (no handler) complete" ))); |
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335 return ETrue; |
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336 } |
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337 // The following will be transferred to parser |
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338 TInt retTemp = KErrNone; |
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339 TBool partialInput = EFalse; |
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340 retTemp = iParseData.iAtCmdHandler->ParseCommand( *iBufferPtr, |
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341 partialInput ); |
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342 if ( retTemp!=KErrNone || !partialInput ) |
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343 { |
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344 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData() (no reissue) complete" ))); |
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345 return EFalse; |
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346 } |
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347 FTRACE(FPrint( _L("CDunUpstream::ProcessReadData() (reissue) complete" ))); |
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348 return ETrue; |
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349 } |
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350 |
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351 // --------------------------------------------------------------------------- |
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352 // Manages activity in a channel |
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353 // --------------------------------------------------------------------------- |
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354 // |
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355 TInt CDunUpstream::ManageChannelActivity() |
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356 { |
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357 FTRACE(FPrint( _L("CDunUpstream::ManageChannelActivity()" ))); |
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358 if ( iActivityData.iDataRead ) |
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359 { |
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360 FTRACE(FPrint( _L("CDunUpstream::ManageChannelActivity() (not ready) complete" ))); |
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361 return KErrNotReady; |
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362 } |
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363 iActivityData.iDataRead = ETrue; |
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364 if ( iActivityData.iActivityCallback && !iActivityData.iNotified ) |
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365 { |
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366 iActivityData.iActivityCallback->NotifyChannelActivity(); |
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367 iActivityData.iNotified = ETrue; |
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368 } |
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369 FTRACE(FPrint( _L("CDunUpstream::ManageChannelActivity() complete" ))); |
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370 return KErrNone; |
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371 } |
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372 |
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373 // --------------------------------------------------------------------------- |
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374 // From class CActive. |
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375 // Gets called when endpoint data read/write complete |
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376 // --------------------------------------------------------------------------- |
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377 // |
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378 void CDunUpstream::RunL() |
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379 { |
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380 FTRACE(FPrint( _L("CDunUpstream::RunL() (Dir=%d)" ), iDirection)); |
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381 iTransferState = EDunStateIdle; |
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382 |
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383 TBool isError; |
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384 TInt retTemp = iStatus.Int(); |
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385 TInt stop = ProcessErrorCondition( retTemp, isError ); |
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386 |
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387 if ( !stop ) // no real error detected -> continue |
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388 { |
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389 TBool reIssue = ETrue; |
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390 if ( !isError ) |
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391 { |
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392 if ( iOperationType == EDunOperationTypeRead ) |
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393 { |
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394 ManageChannelActivity(); |
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395 reIssue = ProcessReadData(); |
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396 } // if ( iOperationType == EDunOperationTypeRead ) |
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397 else // iOperationType == EDunOperationTypeWrite |
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398 { |
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399 iOperationType = EDunOperationTypeRead; |
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400 } |
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401 } // if ( !isError ) |
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402 |
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403 if ( reIssue ) |
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404 { |
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405 IssueRequest(); |
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406 } |
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407 |
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408 } // if ( !stop ) |
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409 else // stop -> tear down connection |
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410 { |
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411 FTRACE(FPrint( _L("CDunUpstream::RunL() stop" ))); |
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412 TDunConnectionReason connReason; |
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413 connReason.iReasonType = EDunReasonTypeRW; |
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414 connReason.iContext = GetMediaContext( EDunStreamTypeUpstream ); |
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415 connReason.iSignalType = 0; |
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416 connReason.iSignalHigh = EFalse; |
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417 connReason.iDirection = iDirection; |
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418 connReason.iErrorCode = retTemp; |
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419 if ( iOperationType == EDunOperationTypeRead ) |
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420 { |
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421 iUtility->DoNotifyConnectionNotOk( iComm, |
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422 iSocket, |
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423 connReason, |
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424 iCallbacksR ); |
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425 } |
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426 else // iOperationType == EDunOperationTypeWrite |
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427 { |
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428 iUtility->DoNotifyConnectionNotOk( iComm, |
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429 iSocket, |
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430 connReason, |
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431 iCallbacksW ); |
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432 } |
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433 } // else |
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434 |
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435 FTRACE(FPrint( _L("CDunUpstream::RunL() complete" ))); |
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436 } |
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437 |
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438 // --------------------------------------------------------------------------- |
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439 // From class CActive. |
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440 // Gets called on cancel |
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441 // --------------------------------------------------------------------------- |
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442 // |
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443 void CDunUpstream::DoCancel() |
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444 { |
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445 } |
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446 |
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447 // --------------------------------------------------------------------------- |
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448 // From class MDunAtCmdStatusReporter |
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449 // Notifies about AT command handling start |
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450 // --------------------------------------------------------------------------- |
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451 // |
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452 void CDunUpstream::NotifyAtCmdHandlingStart() |
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453 { |
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454 FTRACE(FPrint( _L("CDunUpstream::NotifyAtCmdHandlingStart()" ))); |
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455 if ( iParseData.iHandling ) |
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456 { |
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457 FTRACE(FPrint( _L("CDunUpstream::NotifyAtCmdHandlingStart() (already set!)" ))); |
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458 } |
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459 iParseData.iHandling = ETrue; |
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460 FTRACE(FPrint( _L("CDunUpstream::NotifyAtCmdHandlingStart() complete" ))); |
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461 } |
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462 |
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463 // --------------------------------------------------------------------------- |
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464 // From class MDunAtCmdStatusReporter |
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465 // Notifies about AT command handling end |
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466 // --------------------------------------------------------------------------- |
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467 // |
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468 void CDunUpstream::NotifyAtCmdHandlingEnd( TInt aStartIndex ) |
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469 { |
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470 FTRACE(FPrint( _L("CDunUpstream::NotifyAtCmdHandlingEnd()" ))); |
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471 if ( !iParseData.iHandling ) |
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472 { |
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473 FTRACE(FPrint( _L("CDunUpstream::NotifyAtCmdHandlingEnd() (already set!)" ))); |
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474 } |
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475 iParseData.iHandling = EFalse; |
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476 // Next check the offset to the next command inside this block |
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477 TInt length = iBufferPtr->Length(); |
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478 if ( aStartIndex < 0 ) |
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479 { |
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480 // Start of the next command not found so here we need to just reissue |
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481 // the read request and not clear the input buffer. |
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482 iParseData.iAtCmdHandler->SetEndOfCmdLine( EFalse ); |
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483 IssueRequest(); // iOperationType must be read here (don't set) |
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484 FTRACE(FPrint( _L("CDunUpstream::NotifyAtCmdHandlingEnd() (not found) complete" ))); |
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485 return; |
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486 } |
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487 // Here the start of next command was found so try to directly handle that |
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488 // command using ProcessReadData() for the next subblock. |
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489 iParseData.iAtCmdHandler->SetEndOfCmdLine( ETrue ); |
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490 TInt maxLength = iBufferPtr->MaxLength(); |
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491 iBufferPtr->Set( &(*iBufferPtr)[aStartIndex], length-aStartIndex, maxLength ); |
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492 TBool reIssue = ProcessReadData(); |
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493 if ( reIssue ) |
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494 { |
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495 // Note: should come here only if something went wrong |
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496 IssueRequest(); |
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497 } |
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498 FTRACE(FPrint( _L("CDunUpstream::NotifyAtCmdHandlingEnd() complete" ))); |
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499 } |
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500 |
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501 // --------------------------------------------------------------------------- |
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502 // From class MDunAtCmdHandler |
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503 // Starts URC message handling |
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504 // --------------------------------------------------------------------------- |
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505 // |
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506 TInt CDunUpstream::StartUrc() |
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507 { |
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508 FTRACE(FPrint( _L("CDunUpstream::StartUrc()" ))); |
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509 TInt retVal = KErrNone; |
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510 if ( iParseData.iAtCmdHandler ) // optional |
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511 { |
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512 retVal = iParseData.iAtCmdHandler->StartUrc(); |
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513 } |
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514 FTRACE(FPrint( _L("CDunUpstream::StartUrc() complete" ))); |
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515 return retVal; |
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516 } |
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517 |
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518 // --------------------------------------------------------------------------- |
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519 // From class MDunAtCmdHandler |
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520 // Stops AT command handling downstream related activity (also URC) |
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521 // --------------------------------------------------------------------------- |
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522 // |
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523 TInt CDunUpstream::StopAtCmdHandling() |
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524 { |
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525 FTRACE(FPrint( _L("CDunUpstream::StopAtCmdHandling()" ))); |
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526 TInt retVal = KErrNone; |
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527 if ( iParseData.iAtCmdHandler ) // optional |
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528 { |
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529 retVal = iParseData.iAtCmdHandler->StopUrc(); |
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530 if ( retVal != KErrNone ) |
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531 { |
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532 iParseData.iAtCmdHandler->Stop(); |
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533 FTRACE(FPrint( _L("CDunUpstream::StopAtCmdHandling() (iAtCmdHandler) complete" ))); |
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534 return retVal; |
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535 } |
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536 retVal = iParseData.iAtCmdHandler->Stop(); |
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537 } |
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538 FTRACE(FPrint( _L("CDunUpstream::StopAtCmdHandling() complete" ))); |
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539 return retVal; |
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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 start |
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545 // --------------------------------------------------------------------------- |
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546 // |
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547 void CDunUpstream::NotifyCommandModeStart() |
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548 { |
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549 FTRACE(FPrint( _L("CDunUpstream::NotifyCommandModeStart()" ))); |
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550 iParseData.iDataMode = EFalse; |
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551 // Stop processing (just to be sure). |
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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 // Also restart the URC handling after the data mode |
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557 StartUrc(); |
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558 FTRACE(FPrint( _L("CDunUpstream::NotifyCommandModeStart() complete" ))); |
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559 } |
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560 |
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561 // --------------------------------------------------------------------------- |
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562 // From class MDunCmdModeMonitor. |
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563 // Notifies about command mode end |
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564 // --------------------------------------------------------------------------- |
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565 // |
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566 void CDunUpstream::NotifyCommandModeEnd() |
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567 { |
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568 FTRACE(FPrint( _L("CDunUpstream::NotifyCommandModeEnd()" ))); |
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569 iParseData.iDataMode = ETrue; |
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570 // Stop processing (mandatory). |
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571 // This will stop any possibly pending operations of |
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572 // CDunAtCmdHandler and CDunAtUrcHandler. CDunDownstream will take care of |
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573 // clearing (and stopping) non-callback write queues. |
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574 StopAtCmdHandling(); |
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575 // The follow is needed because stopping the AT command handling here |
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576 // prevents the subsequent AT command handling notification to reach the |
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577 // NotifyAtCmdHandlingEnd() in this class (the notification starts from |
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578 // CDunAtCmdPusher's SetToIdleAndNotifyEnd()). |
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579 // So here we have to do the block "if ( aStartIndex < 0 )" in function |
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580 // NotifyAtCmdHandlingEnd(). |
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581 IssueRequest(); |
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582 FTRACE(FPrint( _L("CDunUpstream::NotifyCommandModeEnd() complete" ))); |
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583 } |