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1 /* |
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2 * Copyright (c) 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 * Main implementation of Wlan Sniffer Keepalive application. |
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16 */ |
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17 |
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18 // System include files |
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19 |
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20 #include <rconnmon.h> |
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21 |
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22 // User include files |
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23 |
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24 #include "wsfkeepalivetimer.h" |
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25 #include "wsfkeepalivecmm.h" |
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26 #include "wsfkeepaliveconnmon.h" |
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27 #include "wsfkeepaliveconnmondisc.h" |
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28 #include "wsfkeepaliveesock.h" |
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29 #include "wsfkeepalive.h" |
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30 #include "OstTraceDefinitions.h" |
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31 #ifdef OST_TRACE_COMPILER_IN_USE |
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32 #include "wsfkeepaliveTraces.h" |
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33 #endif |
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34 |
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35 // External function prototypes |
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36 |
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37 // Local constants |
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38 |
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39 // We need to poll for client info every 5 seconds |
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40 static const int KKeepalivePollInterval = 5000000; |
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41 |
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42 // We can close a connection after 5 minutes of inactivity |
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43 static const int KKeepaliveInactivityInterval = 300; |
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44 |
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45 // UID of Wlan sniffer application |
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46 static const TUid KWlanSnifferUid = { 0x10281CAA }; |
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47 |
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48 // UID of Wlan login application |
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49 static const TUid KWlanloginUid = { 0x2002E6D0 }; |
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50 |
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51 // List of UIDs of clients not considered as "real" |
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52 static const TUid KDiscardedClientUids[] = |
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53 { |
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54 { 0x2002FF5F }, // Sniffer keepalive process, that is, us |
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55 KWlanSnifferUid, // Sniffer application (wlansniffer.exe) |
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56 KWlanloginUid, // Wlan Login application (wlanlogin.exe) |
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57 { 0x101fD9C5 } // DHCP server (dhcpserv.exe) |
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58 }; |
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59 |
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60 // ======== LOCAL FUNCTIONS ======== |
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61 |
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62 // ======== MEMBER FUNCTIONS ======== |
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63 |
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64 CWsfKeepalive* CWsfKeepalive::NewL() |
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65 { |
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66 OstTraceFunctionEntry0( CWSFKEEPALIVE_NEWL_ENTRY ); |
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67 |
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68 CWsfKeepalive* me = new ( ELeave ) CWsfKeepalive(); |
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69 CleanupStack::PushL( me ); |
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70 me->ConstructL(); |
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71 CleanupStack::Pop( me ); |
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72 |
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73 OstTraceFunctionExit0( CWSFKEEPALIVE_NEWL_EXIT ); |
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74 return me; |
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75 } |
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76 |
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77 CWsfKeepalive::~CWsfKeepalive() |
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78 { |
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79 OstTraceFunctionEntry0( DUP1_CWSFKEEPALIVE_CWSFKEEPALIVE_ENTRY ); |
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80 |
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81 delete iEsock; |
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82 delete iConnMonDisc; |
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83 delete iCmMgr; |
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84 delete iConnMon; |
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85 delete iTimer; |
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86 |
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87 OstTraceFunctionExit0( DUP1_CWSFKEEPALIVE_CWSFKEEPALIVE_EXIT ); |
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88 } |
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89 |
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90 void CWsfKeepalive::TimerExpired( TInt aError ) |
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91 { |
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92 OstTraceFunctionEntry0( CWSFKEEPALIVE_TIMEREXPIRED_ENTRY ); |
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93 |
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94 TBool restartTimer = ETrue; // Should we restart timer or not? |
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95 if ( aError == KErrNone ) |
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96 { |
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97 // Timer successfully completed, handle it |
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98 if ( NoRealClients( iConnectionId ) ) |
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99 { |
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100 TTime now; |
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101 now.UniversalTime(); |
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102 |
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103 // Check whether we are moving from EActiveWithClients to |
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104 // EActiveNoClients |
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105 if ( iState == EActiveWithClients ) |
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106 { |
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107 OstTrace0( |
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108 TRACE_NORMAL, |
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109 CWSFKEEPALIVE_TIMEREXPIRED_RESET, |
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110 "CWsfKeepalive::TimerExpired Keepalive time reset" ); |
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111 |
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112 // Connection had clients, but doesn't anymore. Keepalive |
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113 // inactivity time starts now |
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114 iKeepaliveStart = now; |
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115 } |
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116 // Check whether keepalive time has been reached |
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117 else if ( iKeepaliveStart + |
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118 TTimeIntervalSeconds( KKeepaliveInactivityInterval ) <= now ) |
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119 { |
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120 OstTrace0( |
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121 TRACE_NORMAL, |
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122 CWSFKEEPALIVE_TIMEREXPIRED_DONE, |
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123 "CWsfKeepalive::TimerExpired Keepalive time expired" ); |
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124 |
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125 // Keepalive time limit expired, connection should be stopped |
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126 iEsock->Disconnect(); |
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127 iConnMonDisc->Disconnect( iConnectionId ); |
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128 restartTimer = EFalse; |
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129 } |
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130 |
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131 // There are now no real clients for the connection |
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132 SetState( EActiveNoClients ); |
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133 } |
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134 else |
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135 { |
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136 // One or more real clients are using the connection |
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137 SetState( EActiveWithClients ); |
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138 } |
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139 } |
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140 else |
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141 { |
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142 // Timer not successful, probably because we stopped it |
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143 restartTimer = EFalse; |
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144 } |
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145 |
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146 if ( restartTimer ) |
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147 { |
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148 TTimeIntervalMicroSeconds32 interval( KKeepalivePollInterval ); |
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149 iTimer->After( interval ); |
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150 } |
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151 |
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152 OstTraceFunctionExit0( CWSFKEEPALIVE_TIMEREXPIRED_EXIT ); |
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153 } |
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154 |
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155 void CWsfKeepalive::WlanConnectionOpenedL( TUint aConnectionId, TUint aIapId ) |
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156 { |
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157 OstTraceFunctionEntry0( CWSFKEEPALIVE_WLANCONNECTIONOPENEDL_ENTRY ); |
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158 |
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159 OstTraceExt2( |
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160 TRACE_NORMAL, |
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161 CWSFKEEPALIVE_WLANCONNECTIONOPENED, |
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162 "CWsfKeepalive::WlanConnectionOpened;aConnectionId=%u;aIapId=%u", |
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163 aConnectionId, |
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164 aIapId ); |
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165 |
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166 // We are only interested in connections opened by the Wlan Sniffer |
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167 if ( OpenedByWlanSniffer( aConnectionId ) ) |
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168 { |
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169 // Start to monitor this connection, and add us as a user to the |
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170 // connection |
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171 iConnectionId = aConnectionId; |
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172 iIapId = aIapId; |
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173 iEsock->ConnectL( aIapId ); |
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174 |
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175 // Assume there are no real clients yet. Setup timer for polling |
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176 // when real clients might be added to the connection |
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177 SetState( EActiveNoClients ); |
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178 iKeepaliveStart.UniversalTime(); |
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179 |
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180 OstTrace0( |
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181 TRACE_NORMAL, |
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182 CWSFKEEPALIVE_WLANCONNECTIONOPENED_RESET, |
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183 "CWsfKeepalive::WlanConnectionOpened Keepalive time reset" ); |
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184 |
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185 TTimeIntervalMicroSeconds32 interval( KKeepalivePollInterval ); |
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186 iTimer->After( interval ); |
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187 } |
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188 |
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189 OstTraceFunctionExit0( CWSFKEEPALIVE_WLANCONNECTIONOPENEDL_EXIT ); |
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190 } |
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191 |
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192 void CWsfKeepalive::WlanConnectionClosed() |
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193 { |
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194 OstTraceFunctionEntry0( CWSFKEEPALIVE_WLANCONNECTIONCLOSED_ENTRY ); |
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195 |
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196 // No need to monitor anything anymore |
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197 SetState( EInactive ); |
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198 iConnectionId = KInvalidConnectionId; |
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199 // Stop also the polling timer |
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200 iTimer->Stop(); |
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201 |
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202 OstTrace1( |
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203 TRACE_NORMAL, |
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204 CWSFKEEPALIVE_WLANCONNECTIONCLOSED_IAPID, |
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205 "CWsfKeepalive::WlanConnectionClosed iapId=%d", |
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206 iIapId ); |
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207 |
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208 // If connected to hotspot IAP, the IAP must be deleted |
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209 if ( iCmMgr->GetHotspotInfoL( iIapId ) ) |
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210 { |
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211 OstTrace0( |
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212 TRACE_NORMAL, |
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213 CWSFKEEPALIVE_WLANCONNECTIONCLOSED_HOTSPOTDETECTED, |
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214 "CWsfKeepalive::WlanConnectionClosed Hotspot IAP detected" ); |
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215 |
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216 if ( !iCmMgr->DeleteHotspotIapL( iIapId ) ) |
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217 { |
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218 OstTrace0( |
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219 TRACE_NORMAL, |
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220 CWSFKEEPALIVE_WLANCONNECTIONCLOSED_HOTSPOTDELETEFAILED, |
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221 "CWsfKeepalive::WlanConnectionClosed Hotspot delete failed" ); |
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222 } |
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223 iIapId = 0; |
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224 } |
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225 |
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226 OstTraceFunctionExit0( CWSFKEEPALIVE_WLANCONNECTIONCLOSED_EXIT ); |
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227 } |
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228 |
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229 // --------------------------------------------------------------------------- |
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230 // Default constructor |
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231 // --------------------------------------------------------------------------- |
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232 // |
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233 CWsfKeepalive::CWsfKeepalive() : |
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234 iConnectionId( KInvalidConnectionId ), |
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235 iState( EInactive ), |
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236 iIapId( 0 ) |
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237 { |
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238 OstTraceFunctionEntry0( CWSFKEEPALIVE_CWSFKEEPALIVE_ENTRY ); |
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239 OstTraceFunctionExit0( CWSFKEEPALIVE_CWSFKEEPALIVE_EXIT ); |
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240 } |
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241 |
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242 // --------------------------------------------------------------------------- |
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243 // Leaving constructor |
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244 // --------------------------------------------------------------------------- |
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245 // |
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246 void CWsfKeepalive::ConstructL() |
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247 { |
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248 OstTraceFunctionEntry0( CWSFKEEPALIVE_CONSTRUCTL_ENTRY ); |
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249 |
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250 iTimer = CWsfKeepaliveTimer::NewL( *this ); |
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251 iConnMon = CWsfKeepaliveConnMon::NewL( *this ); |
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252 iConnMonDisc = CWsfKeepaliveConnMonDisc::NewL(); |
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253 iEsock = CWsfKeepaliveEsock::NewL(); |
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254 iCmMgr = CWsfKeepaliveCmm::NewL(); |
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255 |
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256 OstTraceFunctionExit0( CWSFKEEPALIVE_CONSTRUCTL_EXIT ); |
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257 } |
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258 |
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259 // --------------------------------------------------------------------------- |
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260 // Checks whether the given connection was opened by the Wlan Sniffer |
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261 // application |
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262 // --------------------------------------------------------------------------- |
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263 // |
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264 TBool CWsfKeepalive::OpenedByWlanSniffer( TUint aConnectionId ) |
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265 { |
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266 OstTraceFunctionEntry0( CWSFKEEPALIVE_OPENEDBYWLANSNIFFER_ENTRY ); |
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267 |
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268 TBool retVal = EFalse; |
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269 |
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270 // Get all clients of this connection |
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271 TConnMonClientEnumBuf clientInfo; |
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272 iConnMon->GetClientInfo( clientInfo, aConnectionId ); |
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273 |
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274 // Check whether Wlan sniffer is one of the clients |
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275 for ( TInt i( 0 ); i < clientInfo().iCount; ++i ) |
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276 { |
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277 if ( clientInfo().iUid[i] == KWlanSnifferUid ) |
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278 { |
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279 // Match found, stop looking |
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280 retVal = ETrue; |
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281 break; |
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282 } |
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283 } |
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284 |
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285 OstTraceExt2( |
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286 TRACE_NORMAL, |
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287 CWSFKEEPALIVE_OPENEDBYWLANSNIFFER, |
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288 "CWsfKeepalive::OpenedByWlanSniffer;aConnectionId=%u;retVal=%u", |
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289 aConnectionId, |
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290 retVal ); |
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291 |
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292 OstTraceFunctionExit0( CWSFKEEPALIVE_OPENEDBYWLANSNIFFER_EXIT ); |
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293 return retVal; |
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294 } |
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295 |
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296 // --------------------------------------------------------------------------- |
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297 // Checks whether there are any real clients using the given connection |
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298 // --------------------------------------------------------------------------- |
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299 // |
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300 TBool CWsfKeepalive::NoRealClients( TUint aConnectionId ) |
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301 { |
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302 OstTraceFunctionEntry0( CWSFKEEPALIVE_NOREALCLIENTS_ENTRY ); |
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303 |
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304 // Get all clients of this connection |
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305 TConnMonClientEnumBuf clientInfo; |
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306 iConnMon->GetClientInfo( clientInfo, aConnectionId ); |
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307 |
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308 // Get the client count |
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309 TInt clientCount = clientInfo().iCount; |
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310 |
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311 TInt discardedClientCount = sizeof( KDiscardedClientUids ) / sizeof( TUid ); |
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312 |
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313 // Decrease count by each non-real client we must discard |
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314 for ( TInt i( 0 ); i < clientInfo().iCount; ++i ) |
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315 { |
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316 for ( TInt j( 0 ); j < discardedClientCount; ++j ) |
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317 { |
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318 if ( clientInfo().iUid[i] == KDiscardedClientUids[j] ) |
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319 { |
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320 OstTrace1( |
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321 TRACE_NORMAL, |
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322 CWSFKEEPALIVE_NOREALCLIENTS_DISCARD, |
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323 "CWsfKeepalive::NoRealClients Client discarded;clientInfo().iUid[i].iUid=%x", |
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324 clientInfo().iUid[i].iUid ); |
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325 --clientCount; |
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326 break; |
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327 } |
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328 } |
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329 } |
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330 |
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331 // If we reached zero, there were no real clients |
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332 TBool retVal = clientCount == 0 ? ETrue : EFalse; |
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333 OstTraceExt2( |
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334 TRACE_NORMAL, |
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335 CWSFKEEPALIVE_NOREALCLIENTS, |
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336 "CWsfKeepalive::NoRealClients;aConnectionId=%u;retVal=%u", |
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337 aConnectionId, |
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338 retVal ); |
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339 |
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340 OstTraceFunctionExit0( CWSFKEEPALIVE_NOREALCLIENTS_EXIT ); |
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341 return retVal; |
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342 } |
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343 |
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344 // --------------------------------------------------------------------------- |
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345 // Sets the given state and traces the transition, if state changed. |
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346 // --------------------------------------------------------------------------- |
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347 // |
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348 void CWsfKeepalive::SetState( TUint aState ) |
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349 { |
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350 OstTraceFunctionEntry0( CWSFKEEPALIVE_SETSTATE_ENTRY ); |
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351 |
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352 #ifdef OST_TRACE_COMPILER_IN_USE |
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353 if ( aState != iState ) |
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354 { |
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355 OstTrace1( |
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356 TRACE_NORMAL, |
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357 CWSFKEEPALIVE_SETSTATE, |
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358 "CWsfKeepalive::SetState;aState=%{State}", |
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359 aState ); |
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360 } |
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361 #endif |
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362 iState = aState; |
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363 |
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364 OstTraceFunctionExit0( CWSFKEEPALIVE_SETSTATE_EXIT ); |
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365 } |