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1 /* |
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2 * Copyright (c) 2009-2010 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: |
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15 * Implementation of WLAN Coverage Check class |
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16 * |
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17 */ |
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18 |
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19 |
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20 #include <wlanmgmtclient.h> |
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21 |
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22 #include "cmwlancoveragecheck.h" |
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23 #include "cmpluginwlan.h" |
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24 |
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25 #include "OstTraceDefinitions.h" |
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26 #ifdef OST_TRACE_COMPILER_IN_USE |
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27 #include "cmwlancoveragecheckTraces.h" |
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28 #endif |
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29 |
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30 |
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31 /** |
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32 * Management frame information element IDs. |
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33 * needed to determine coverage |
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34 */ |
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35 enum T802Dot11InformationElementID |
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36 { |
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37 E802Dot11SsidIE = 0, |
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38 E802Dot11SupportedRatesIE = 1, |
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39 E802Dot11FhParameterSetIE = 2, |
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40 E802Dot11DsParameterSetIE = 3, |
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41 E802Dot11CfParameterSetIE = 4, |
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42 E802Dot11TimIE = 5, |
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43 E802Dot11IbssParameterSetIE = 6, |
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44 E802Dot11CountryIE = 7, |
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45 E802Dot11HoppingPatternParamIE = 8, |
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46 E802Dot11HoppingPatternTableIE = 9, |
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47 E802Dot11RequestIE = 10, |
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48 |
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49 E802Dot11ChallengeTextIE = 16, |
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50 // Reserved for challenge text extension 17 - 31 |
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51 E802Dot11ErpInformationIE = 42, |
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52 E802Dot11ExtendedRatesIE = 50, |
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53 E802Dot11AironetIE = 133, |
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54 E802Dot11ApIpAddressIE = 149, |
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55 E802Dot11RsnIE = 221 |
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56 }; |
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57 |
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58 |
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59 // ======================= MEMBER FUNCTIONS ================================= |
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60 |
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61 // ---------------------------------------------------------------------------- |
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62 // CCmWlanCoverageCheck::CCmWlanCoverageCheck() |
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63 // ---------------------------------------------------------------------------- |
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64 // |
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65 CCmWlanCoverageCheck::CCmWlanCoverageCheck() : CActive( EPriorityStandard ) |
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66 { |
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67 OstTraceFunctionEntry1( CCMWLANCOVERAGECHECK_CCMWLANCOVERAGECHECK_ENTRY, this ); |
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68 CActiveScheduler::Add( this ); |
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69 OstTraceFunctionExit1( CCMWLANCOVERAGECHECK_CCMWLANCOVERAGECHECK_EXIT, this ); |
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70 } |
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71 |
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72 // ---------------------------------------------------------------------------- |
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73 // CCmWlanCoverageCheck::~CCmWlanCoverageCheck() |
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74 // ---------------------------------------------------------------------------- |
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75 // |
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76 CCmWlanCoverageCheck::~CCmWlanCoverageCheck() |
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77 { |
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78 OstTraceFunctionEntry1( DUP1_CCMWLANCOVERAGECHECK_CCMWLANCOVERAGECHECK_ENTRY, this ); |
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79 Cancel(); |
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80 OstTraceFunctionExit1( DUP1_CCMWLANCOVERAGECHECK_CCMWLANCOVERAGECHECK_EXIT, this ); |
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81 } |
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82 |
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83 // ---------------------------------------------------------------------------- |
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84 // CCmWlanCoverageCheck::DoCancel |
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85 // ---------------------------------------------------------------------------- |
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86 // |
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87 void CCmWlanCoverageCheck::DoCancel() |
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88 { |
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89 OstTraceFunctionEntry1( CCMWLANCOVERAGECHECK_DOCANCEL_ENTRY, this ); |
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90 iWait.AsyncStop(); |
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91 OstTraceFunctionExit1( CCMWLANCOVERAGECHECK_DOCANCEL_EXIT, this ); |
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92 } |
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93 |
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94 // ---------------------------------------------------------------------------- |
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95 // CCmWlanCoverageCheck::RunL |
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96 // ---------------------------------------------------------------------------- |
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97 // |
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98 void CCmWlanCoverageCheck::RunL() |
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99 { |
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100 OstTraceFunctionEntry1( CCMWLANCOVERAGECHECK_RUNL_ENTRY, this ); |
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101 |
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102 switch ( iProgState ) |
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103 { |
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104 case EScanning: |
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105 { |
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106 if ( iStatus.Int() == KErrNone ) |
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107 { |
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108 // The list is ready. |
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109 iProgState = EDone; |
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110 iWait.AsyncStop(); |
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111 } |
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112 else |
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113 { |
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114 // Something went wrong -> no coverage. |
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115 iWait.AsyncStop(); |
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116 } |
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117 } |
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118 break; |
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119 case EDone: |
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120 { |
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121 iWait.AsyncStop(); |
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122 } |
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123 break; |
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124 default: |
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125 { |
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126 User::Leave( KErrCorrupt ); |
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127 } |
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128 break; |
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129 } |
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130 |
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131 OstTraceFunctionExit1( CCMWLANCOVERAGECHECK_RUNL_EXIT, this ); |
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132 } |
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133 |
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134 // ---------------------------------------------------------------------------- |
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135 // CCmWlanCoverageCheck::GetCoverageL |
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136 // ---------------------------------------------------------------------------- |
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137 // |
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138 TBool CCmWlanCoverageCheck::GetCoverageL() |
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139 { |
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140 OstTraceFunctionEntry0( CCMWLANCOVERAGECHECK_GETCOVERAGEL_ENTRY ); |
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141 |
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142 iProgState = EServiceStatus; |
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143 iCoverage = EFalse; |
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144 |
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145 CWlanMgmtClient* wlanMgmt = CWlanMgmtClient::NewL(); |
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146 CleanupStack::PushL( wlanMgmt ); |
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147 |
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148 CWlanScanInfo* scanInfo = CWlanScanInfo::NewL(); |
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149 CleanupStack::PushL( scanInfo ); |
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150 |
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151 iProgState = EScanning; |
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152 |
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153 wlanMgmt->GetScanResults( iStatus, *scanInfo ); |
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154 |
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155 SetActive(); |
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156 iWait.Start(); |
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157 |
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158 // now we have the results and might start to work on them... |
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159 if ( iProgState == EDone ) |
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160 { //finished without error, work on the result... |
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161 |
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162 for ( scanInfo->First(); !scanInfo->IsDone(); scanInfo->Next() ) |
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163 { |
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164 TBool isHidden( EFalse ); |
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165 |
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166 TUint8 ieLen( 0 ); |
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167 const TUint8* ieData; |
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168 |
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169 TInt ret = scanInfo->InformationElement( E802Dot11SsidIE, ieLen, |
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170 &ieData ); |
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171 if ( ret == KErrNone ) |
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172 { |
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173 isHidden = IsHiddenSsid( ieLen, ieData ); |
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174 if ( !isHidden ) |
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175 { |
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176 // WLAN awailable...stop searching. |
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177 iCoverage = ETrue; |
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178 break; |
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179 } |
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180 } |
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181 else |
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182 { |
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183 User::Leave( ret ); |
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184 } |
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185 } |
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186 |
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187 CleanupStack::PopAndDestroy( 2, wlanMgmt ); |
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188 } |
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189 else |
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190 { |
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191 // Clean the cleanupstack in case status is KErrNone |
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192 CleanupStack::PopAndDestroy( scanInfo ); |
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193 CleanupStack::PopAndDestroy( wlanMgmt ); |
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194 |
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195 User::LeaveIfError( iStatus.Int() ); |
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196 } |
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197 |
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198 OstTraceFunctionExit0( CCMWLANCOVERAGECHECK_GETCOVERAGEL_EXIT ); |
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199 return iCoverage; |
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200 } |
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201 |
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202 // --------------------------------------------------------- |
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203 // CCmWlanCoverageCheck::IsHiddenSsid |
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204 // --------------------------------------------------------- |
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205 // |
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206 TBool CCmWlanCoverageCheck::IsHiddenSsid( |
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207 TUint aSsidLength, |
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208 const TUint8* aSsid ) const |
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209 { |
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210 OstTraceFunctionEntryExt( CCMWLANCOVERAGECHECK_ISHIDDENSSID_ENTRY, this ); |
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211 |
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212 const TUint8 CSPACE = 0x20; |
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213 TBool result( EFalse ); |
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214 TBool result2( ETrue ); |
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215 |
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216 if ( !aSsidLength ) |
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217 { |
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218 result = ETrue; |
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219 } |
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220 |
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221 TInt count( 0 ); |
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222 TUint8 temp( 0x00 ); |
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223 |
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224 for ( TUint i( 0 ); i < aSsidLength; ++i ) |
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225 { |
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226 temp = aSsid[i]; |
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227 count += temp; // in hidden networks characters are: 0x00 |
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228 result2 &= temp == CSPACE ; |
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229 } |
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230 |
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231 if ( !count || result2 ) |
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232 { |
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233 result = ETrue; |
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234 } |
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235 |
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236 OstTraceFunctionExitExt( CCMWLANCOVERAGECHECK_ISHIDDENSSID_EXIT, this, result ); |
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237 return result; |
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238 } |
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239 |