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1 /* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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2 * All rights reserved. |
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3 * This component and the accompanying materials are made available |
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4 * under the terms of "Eclipse Public License v1.0" |
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5 * which accompanies this distribution, and is available |
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6 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 * Initial Contributors: |
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8 * Nokia Corporation - initial contribution. |
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9 * |
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10 * Contributors: |
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11 * Description : |
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12 * |
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13 */ |
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14 #include "cusdcommandhandler.h" |
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15 |
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16 #include <exterror.h> |
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17 |
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18 #include "atmisccmdpluginconsts.h" |
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19 #include "cusdreadwriteimp.h" |
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20 #include "debug.h" |
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21 |
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22 const TUint8 KPhCltUssdCarriageReturn = 0x0d; |
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23 const TUint8 KPhCltUssdDcsNotSet = 0x00; // not set |
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24 |
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25 const TUint8 KQuarterShift( 2 ); |
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26 const TUint8 KHighNibbleShift( 4 ); |
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27 const TUint8 KDcsCharacterSet7Bit( 0x00 ); |
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28 const TUint8 KDcsCharacterSet8Bit( 0x01 ); |
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29 const TUint8 KDcsCharacterSet16Bit( 0x02 ); |
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30 const TUint8 KDcsCharacterSet7Bit2( 0x00 ); |
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31 const TUint8 KDcsCharacterSet16Bit2( 0x01 ); |
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32 |
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33 CCUSDCommandHandler* CCUSDCommandHandler::NewL(MATMiscCmdPlugin* aCallback, TAtCommandParser& aATCmdParser, RMobilePhone& aPhone) |
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34 { |
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35 TRACE_FUNC_ENTRY |
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36 CCUSDCommandHandler* self = new (ELeave) CCUSDCommandHandler(aCallback, aATCmdParser, aPhone); |
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37 CleanupStack::PushL(self); |
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38 self->ConstructL(); |
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39 CleanupStack::Pop(self); |
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40 TRACE_FUNC_EXIT |
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41 return self; |
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42 } |
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43 |
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44 CCUSDCommandHandler::CCUSDCommandHandler(MATMiscCmdPlugin* aCallback, TAtCommandParser& aATCmdParser, RMobilePhone& aPhone) : |
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45 CATCmdAsyncBase(aCallback, aATCmdParser, aPhone) |
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46 { |
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47 TRACE_FUNC_ENTRY |
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48 iSendAttributes.iDcs = KPhCltUssdDcsNotSet; |
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49 iSendAttributes.iType = RMobileUssdMessaging::EUssdMORequest; |
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50 iSendAttributes.iFlags = RMobileUssdMessaging::KUssdMessageType | RMobileUssdMessaging::KUssdMessageDcs | RMobileUssdMessaging::KUssdDataFormat; |
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51 TRACE_FUNC_EXIT |
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52 } |
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53 |
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54 void CCUSDCommandHandler::ConstructL() |
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55 { |
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56 TRACE_FUNC_ENTRY |
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57 User::LeaveIfError(iUssdMessaging.Open(iPhone)); |
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58 |
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59 iUSSDSender = CCUSSDSendMessageImpl::NewL(this, iUssdMessaging); |
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60 iUSSDReader = CCUSSDReadMessageImpl::NewL(this, iUssdMessaging); |
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61 |
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62 //start a read session for network based ussd requests |
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63 User::LeaveIfError(iUSSDReader->ReadUSSDMessage(iReceivedData, iReceiveAttributes)); |
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64 TRACE_FUNC_EXIT |
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65 } |
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66 |
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67 CCUSDCommandHandler::~CCUSDCommandHandler() |
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68 { |
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69 TRACE_FUNC_ENTRY |
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70 delete iUSSDSender; |
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71 delete iUSSDReader; |
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72 |
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73 iReply.Close(); |
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74 iUssdMessaging.Close(); |
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75 TRACE_FUNC_EXIT |
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76 } |
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77 |
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78 void CCUSDCommandHandler::DoCancel() |
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79 { |
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80 TRACE_FUNC_ENTRY |
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81 // This would never get called as the AO is never activated |
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82 TRACE_FUNC_EXIT |
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83 } |
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84 |
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85 void CCUSDCommandHandler::HandleCommand( const TDesC8& aCmd, |
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86 RBuf8& /*aReply*/, |
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87 TBool /*aReplyNeeded*/ ) |
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88 { |
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89 TRACE_FUNC_ENTRY |
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90 TAtCommandParser::TCommandHandlerType cmdHandlerType = iATCmdParser.CommandHandlerType(); |
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91 |
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92 switch (cmdHandlerType) |
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93 { |
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94 case (TAtCommandParser::ECmdHandlerTypeTest): |
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95 { |
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96 iReply.Create(KDefaultCmdBufLength); |
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97 iReply.Append(KCRLF); |
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98 iReply.Append(KCUSDSupportedCmdsList); |
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99 iCallback->CreateReplyAndComplete( EReplyTypeOther, iReply ); |
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100 break; |
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101 } |
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102 case (TAtCommandParser::ECmdHandlerTypeRead): |
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103 { |
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104 iReply.Create(KDefaultCmdBufLength); |
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105 iReply.Append(KCRLF); |
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106 iReply.Append(KAtCUSD); |
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107 iReply.AppendNum(iDisplayRetMessage); |
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108 iReply.Append(KCRLF); |
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109 |
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110 iCallback->CreateReplyAndComplete( EReplyTypeOther, iReply ); |
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111 break; |
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112 } |
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113 case (TAtCommandParser::ECmdHandlerTypeSet): |
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114 { |
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115 if(ParseCUSDCmd(aCmd) == KErrNone) |
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116 { |
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117 if(iUSSDCommand.Length() == 0) |
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118 { |
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119 Trace(KDebugPrintD, "No USSD command: ", iUSSDCommand.Length()); |
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120 |
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121 // the USSD command is not set then this is a set |
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122 iReply.Create(KDefaultCmdBufLength); |
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123 iReply.Append(KCRLF); |
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124 iReply.Append(KAtCUSD); |
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125 iReply.AppendNum(iDisplayRetMessage); |
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126 iReply.Append(KCRLF); |
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127 |
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128 iCallback->CreateReplyAndComplete( EReplyTypeOther, iReply ); |
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129 } |
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130 else |
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131 { |
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132 if(iUSSDSender->HandleSendUSSDCmd(iUSSDCommand, iSendAttributes) == KErrNone) |
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133 { |
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134 iSendCommandSent = ETrue; |
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135 } |
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136 else |
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137 { |
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138 iCallback->CreateReplyAndComplete(EReplyTypeError); |
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139 } |
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140 } |
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141 } |
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142 else |
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143 { |
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144 iCallback->CreateReplyAndComplete(EReplyTypeError); |
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145 } |
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146 |
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147 break; |
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148 } |
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149 default: |
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150 { |
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151 iCallback->CreateReplyAndComplete(EReplyTypeError); |
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152 break; |
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153 } |
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154 } |
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155 TRACE_FUNC_EXIT |
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156 } |
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157 |
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158 void CCUSDCommandHandler::RunL() |
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159 { |
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160 TRACE_FUNC_ENTRY |
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161 // This would never get called as the AO is never activated |
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162 TRACE_FUNC_EXIT |
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163 } |
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164 |
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165 |
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166 void CCUSDCommandHandler::HandleCommandCancel() |
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167 { |
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168 TRACE_FUNC_ENTRY |
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169 iUSSDSender->Cancel(); |
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170 TRACE_FUNC_EXIT |
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171 } |
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172 |
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173 TInt CCUSDCommandHandler::ParseCUSDCmd(const TDesC8& aCmd) |
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174 { |
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175 TRACE_FUNC_ENTRY |
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176 |
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177 iReply.Create(KDefaultCmdBufLength); |
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178 TBool tempRetMessage = EFalse; |
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179 TInt ret = iATCmdParser.NextIntParam(tempRetMessage); |
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180 |
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181 if(ret == KErrNone) |
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182 { |
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183 if(tempRetMessage < 0 || tempRetMessage > 2) |
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184 { |
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185 Trace(KDebugPrintD, "Display mode invalid: ", tempRetMessage); |
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186 TRACE_FUNC_EXIT |
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187 return KErrGeneral; |
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188 } |
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189 else |
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190 { |
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191 iDisplayRetMessage = tempRetMessage; |
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192 } |
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193 } |
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194 |
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195 // now parse the USSD command |
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196 TPtrC8 command = iATCmdParser.NextTextParam(ret); |
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197 |
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198 if (ret == KErrNone) |
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199 { |
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200 if(iUSSDCommand.Create(command.Length()) != KErrNone) |
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201 { |
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202 TRACE_FUNC_EXIT |
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203 return KErrGeneral; |
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204 } |
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205 |
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206 if(Pack(command, iUSSDCommand) < 0) |
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207 { |
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208 Trace(KDebugPrintS, "Pack() returned error, command: ", &command); |
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209 TRACE_FUNC_EXIT |
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210 return KErrGeneral; |
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211 } |
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212 } |
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213 |
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214 TInt tempDcs = -1; |
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215 ret = iATCmdParser.NextIntParam(tempDcs); |
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216 |
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217 if(ret == KErrNone) |
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218 { |
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219 if(!IsDcsValid(tempDcs)) |
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220 { |
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221 Trace(KDebugPrintD, "Invalid coding standard: ", tempDcs); |
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222 TRACE_FUNC_EXIT |
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223 return KErrGeneral; |
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224 } |
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225 else |
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226 { |
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227 iSendAttributes.iDcs = tempDcs; |
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228 } |
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229 } |
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230 TRACE_FUNC_EXIT |
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231 return KErrNone; |
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232 } |
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233 |
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234 void CCUSDCommandHandler::HandleSendMessageComplete(TInt aResult) |
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235 { |
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236 TRACE_FUNC_ENTRY |
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237 if(aResult == KErrNone) |
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238 { |
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239 iReply.Create(KDefaultCmdBufLength); |
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240 iReply.Append(KCRLF); |
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241 iReply.Append(KAtCUSD); |
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242 iReply.Append(KCRLF); |
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243 iCallback->CreateReplyAndComplete( EReplyTypeOther, iReply ); |
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244 } |
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245 else |
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246 { |
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247 iCallback->CreateReplyAndComplete(EReplyTypeError); |
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248 } |
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249 |
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250 iSendCommandSent = EFalse; |
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251 iUSSDCommand.Close(); |
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252 TRACE_FUNC_EXIT |
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253 } |
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254 |
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255 void CCUSDCommandHandler::HandleReadMessageComplete(TInt aResult) |
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256 { |
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257 TRACE_FUNC_ENTRY |
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258 if(iDisplayRetMessage) |
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259 { |
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260 FormatUSSDReceivedData(); |
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261 |
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262 if(iSendCommandSent) |
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263 { |
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264 iCallback->CreateReplyAndComplete( EReplyTypeOther, iReply ); |
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265 } |
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266 else |
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267 { |
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268 iCallback->HandleUnsolicitedRequest(iReply); |
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269 } |
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270 } |
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271 // re-issue the read request |
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272 iUSSDReader->ReadUSSDMessage(iReceivedData, iReceiveAttributes); |
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273 TRACE_FUNC_EXIT |
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274 } |
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275 |
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276 TInt CCUSDCommandHandler::Pack(const TDesC8& aIn, TDes8& aOut) |
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277 { |
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278 TRACE_FUNC_ENTRY |
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279 TInt startBit = 0; |
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280 |
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281 // Ensure we've got the right length |
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282 TInt packedOctetsRequired = PackedOctetsRequired( aIn.Length() ); |
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283 if ( packedOctetsRequired > ( aOut.MaxLength() - aOut.Length() ) ) |
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284 { |
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285 Trace(KDebugPrintD, "packedOctetsRequired: ", packedOctetsRequired); |
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286 TRACE_FUNC_EXIT |
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287 return KErrOverflow; |
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288 } |
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289 |
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290 // Do the conversion |
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291 TInt elementSizeInBits = ElementSizeInBits(TSmsDataCodingScheme::ESmsAlphabet7Bit); |
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292 if ( elementSizeInBits == 8 ) // 8 bit data |
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293 { |
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294 // Straight copy here |
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295 aOut.Append( aIn ); |
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296 } |
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297 else if ( elementSizeInBits == 7 ) // Need packing to 7-bit |
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298 { |
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299 // Get raw pointers and do packing |
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300 TUint8* outPtr = ( TUint8* )aOut.Ptr() + aOut.Length(); |
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301 const TUint8* inPtr = aIn.Ptr(); |
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302 |
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303 outPtr[0] = 0; |
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304 for ( TInt i = 0; i < aIn.Length() ; ++i ) |
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305 { |
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306 TUint8 to = inPtr[i]; |
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307 *outPtr |= ( to << startBit ); |
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308 if ( startBit ) |
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309 { |
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310 ++outPtr; |
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311 *outPtr = ( TUint8 ) ( to >> ( 8 - startBit ) ); |
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312 } |
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313 startBit = ( startBit + 7 )%8; // roll 0,1,2,3,4,5,6,7,0,1,2,... |
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314 |
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315 if ( i == aIn.Length() - 1 ) // if this is the last time |
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316 { |
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317 if ( ( to == KPhCltUssdCarriageReturn && startBit == 0 ) || |
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318 startBit == 1 ) |
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319 { |
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320 //We have to add one CR more |
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321 *outPtr |= ( KPhCltUssdCarriageReturn << startBit ); |
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322 if ( startBit ) |
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323 { |
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324 ++outPtr; |
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325 *outPtr = ( TUint8 ) ( KPhCltUssdCarriageReturn >> ( 8 - startBit ) ); |
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326 } |
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327 else |
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328 { |
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329 ++packedOctetsRequired; |
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330 } |
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331 startBit = ( startBit + 7 )%8; |
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332 } |
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333 } |
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334 } |
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335 // Increment the length for the packed data |
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336 aOut.SetLength( aOut.Length() + packedOctetsRequired ); |
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337 } |
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338 |
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339 // Return number of bytes used |
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340 TRACE_FUNC_EXIT |
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341 return packedOctetsRequired; |
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342 } |
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343 |
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344 TInt CCUSDCommandHandler::PackedOctetsRequired( TInt aNumUDUnits ) const |
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345 { |
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346 TRACE_FUNC_ENTRY |
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347 TInt startBit = 0; |
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348 |
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349 TInt octetsRequired = 0; |
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350 TInt elementSizeInBits = ElementSizeInBits(TSmsDataCodingScheme::ESmsAlphabet7Bit); |
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351 if ( elementSizeInBits == 8 ) |
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352 { |
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353 octetsRequired=aNumUDUnits; |
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354 } |
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355 else |
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356 { |
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357 octetsRequired = ( startBit + aNumUDUnits*elementSizeInBits + 7 )/8; // Rounds up |
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358 } |
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359 TRACE_FUNC_EXIT |
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360 return octetsRequired; |
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361 } |
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362 |
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363 TBool CCUSDCommandHandler::IsDcsValid( const TUint8 aDcs ) const |
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364 { |
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365 TRACE_FUNC_ENTRY |
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366 TBool isDcsValid( EFalse ); |
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367 // 76543210 |
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368 TUint8 codingGroup = ( aDcs & 0xF0 ) >> KHighNibbleShift; // bits XXXX____ |
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369 TUint8 characterSet = ( aDcs & 0x0C ) >> KQuarterShift; // bits ____XX__ |
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370 TUint8 lowQuartet = ( aDcs & 0x0F ); // bits ____XXXX |
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371 |
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372 switch ( codingGroup ) |
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373 { |
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374 case 0x00: |
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375 case 0x02: |
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376 case 0x03: |
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377 case 0x0F: |
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378 { |
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379 isDcsValid = ETrue; |
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380 break; |
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381 } |
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382 |
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383 case 0x01: |
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384 { |
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385 if ( ( KDcsCharacterSet7Bit2 == lowQuartet ) || |
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386 ( KDcsCharacterSet16Bit2 == lowQuartet ) ) |
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387 { |
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388 isDcsValid = ETrue; |
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389 } |
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390 break; |
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391 } |
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392 |
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393 case 0x04: |
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394 case 0x05: |
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395 case 0x06: |
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396 case 0x07: |
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397 case 0x09: |
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398 { |
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399 if ( ( KDcsCharacterSet7Bit == characterSet ) || |
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400 ( KDcsCharacterSet8Bit == characterSet ) || |
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401 ( KDcsCharacterSet16Bit == characterSet ) ) |
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402 { |
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403 isDcsValid = ETrue; |
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404 } |
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405 break; |
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406 } |
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407 } |
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408 TRACE_FUNC_EXIT |
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409 return isDcsValid; |
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410 } |
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411 |
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412 TInt CCUSDCommandHandler::ElementSizeInBits(TSmsDataCodingScheme::TSmsAlphabet aAlphabet) const |
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413 { |
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414 TRACE_FUNC_ENTRY |
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415 TInt ret; |
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416 switch ( aAlphabet ) |
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417 { |
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418 case TSmsDataCodingScheme::ESmsAlphabet7Bit: |
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419 { |
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420 ret = 7; |
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421 break; |
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422 } |
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423 case TSmsDataCodingScheme::ESmsAlphabet8Bit: |
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424 case TSmsDataCodingScheme::ESmsAlphabetUCS2: |
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425 { |
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426 ret = 8; |
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427 break; |
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428 } |
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429 default: |
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430 { |
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431 ret = KErrGsmSMSDataCodingSchemeNotSupported; |
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432 } |
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433 } |
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434 TRACE_FUNC_EXIT |
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435 return ret; |
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436 } |
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437 |
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438 void CCUSDCommandHandler::FormatUSSDReceivedData() |
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439 { |
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440 TRACE_FUNC_ENTRY |
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441 iReply.Create(KDefaultCmdBufLength); |
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442 |
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443 iReply.Append(KCRLF); |
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444 iReply.Append(KAtCUSD); |
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445 iReply.AppendNum(iDisplayRetMessage); |
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446 iReply.Append(','); |
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447 iReply.Append('"'); |
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448 |
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449 TInt length = iReceivedData.Length(); |
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450 for(TInt i = 0; i < length; ++i) |
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451 { |
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452 iReply.AppendNum(iReceivedData[i], EHex); |
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453 } |
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454 iReply.Append('"'); |
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455 iReply.Append(','); |
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456 |
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457 iReply.AppendNum(iReceiveAttributes.iDcs); |
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458 iReply.Append(KCRLF); |
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459 TRACE_FUNC_EXIT |
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460 } |