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1 // Copyright (c) 2006-2009 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 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Name : CSipSecAgreeContext.cpp |
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15 // Part of : SIPSec |
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16 // Version : SIP/5.0 |
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17 // |
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18 |
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19 |
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20 |
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21 #include "sipstrings.h" |
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22 #include "siprequest.h" |
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23 #include "sipresponse.h" |
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24 #include "sipcseqheader.h" |
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25 #include "MSIPTransportMgr.h" |
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26 #include "MIpSecMechanismParams.h" |
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27 #include "MSIPSecSecurityMechanismObserver.h" |
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28 #include "CSipSecAgreeRecord.h" |
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29 #include "CSipSecAgreeContext.h" |
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30 #include "SipSecUtils.h" |
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31 |
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32 #ifdef CPPUNIT_TEST |
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33 #include "CActiveObjController1.h" |
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34 #endif |
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35 |
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36 |
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37 // ---------------------------------------------------------------------------- |
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38 // CSipSecAgreeContext::NewL |
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39 // ---------------------------------------------------------------------------- |
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40 // |
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41 CSipSecAgreeContext* CSipSecAgreeContext::NewL( |
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42 MIpSecMechanismParams& aParams, |
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43 TSIPTransportParams& aTransportParams, |
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44 CSIPResponse& aResponse, |
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45 CSIPRequest& aRequest, |
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46 TInetAddr& aRemoteAddress, |
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47 MSIPSecUser* aUser, |
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48 MSIPSecSecurityMechanismObserver& aObserver, |
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49 RPointerArray<CState>& aStates ) |
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50 { |
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51 CSipSecAgreeContext* |
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52 self = CSipSecAgreeContext::NewLC( aParams, |
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53 aTransportParams, |
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54 aResponse, |
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55 aRequest, |
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56 aRemoteAddress, |
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57 aUser, |
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58 aObserver, |
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59 aStates ); |
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60 CleanupStack::Pop( self ); |
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61 return self; |
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62 } |
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63 |
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64 // ---------------------------------------------------------------------------- |
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65 // CSipSecAgreeContext::NewLC |
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66 // ---------------------------------------------------------------------------- |
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67 // |
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68 CSipSecAgreeContext* CSipSecAgreeContext::NewLC( |
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69 MIpSecMechanismParams& aParams, |
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70 TSIPTransportParams& aTransportParams, |
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71 CSIPResponse& aResponse, |
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72 CSIPRequest& aRequest, |
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73 TInetAddr& aRemoteAddress, |
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74 MSIPSecUser* aUser, |
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75 MSIPSecSecurityMechanismObserver& aObserver, |
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76 RPointerArray<CState>& aStates ) |
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77 { |
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78 CSipSecAgreeContext* self = |
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79 new ( ELeave ) CSipSecAgreeContext( aParams, aObserver, aStates ); |
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80 CleanupStack::PushL(self); |
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81 self->ConstructL( aTransportParams, |
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82 aResponse, |
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83 aRequest, |
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84 aRemoteAddress, |
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85 aUser ); |
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86 return self; |
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87 } |
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88 |
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89 // ---------------------------------------------------------------------------- |
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90 // CSipSecAgreeContext::CSipSecAgreeContext |
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91 // ---------------------------------------------------------------------------- |
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92 // |
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93 CSipSecAgreeContext::CSipSecAgreeContext( |
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94 MIpSecMechanismParams& aParams, |
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95 MSIPSecSecurityMechanismObserver& aObserver, |
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96 RPointerArray<CState>& aStates ) : |
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97 iParams( aParams ), |
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98 iObserver( &aObserver ), |
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99 iStates( aStates ) |
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100 #ifdef CPPUNIT_TEST |
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101 , iSecAgreeRecords( 1 ) |
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102 #endif |
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103 { |
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104 } |
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105 |
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106 // ---------------------------------------------------------------------------- |
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107 // CSipSecAgreeContext::ConstructL |
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108 // ---------------------------------------------------------------------------- |
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109 // |
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110 void CSipSecAgreeContext::ConstructL( TSIPTransportParams& aTransportParams, |
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111 CSIPResponse& aResponse, |
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112 CSIPRequest& aRequest, |
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113 TInetAddr& aRemoteAddress, |
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114 MSIPSecUser* aUser ) |
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115 { |
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116 User::LeaveIfError( iParams.TransportMan().GetLocalAddress( |
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117 aTransportParams.IapId(), |
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118 iLocalAddress ) ); |
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119 iRemoteAddress = aRemoteAddress; |
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120 iSecUser = aUser; |
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121 |
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122 CSipSecAgreeRecord* r = |
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123 CSipSecAgreeRecord::NewLC( iStates, *this, aTransportParams ); |
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124 |
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125 #ifdef CPPUNIT_TEST |
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126 iObjCtr = new ( ELeave ) CActiveObjController1(); |
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127 iObjCtr->iContext = this; |
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128 iObjCtr->iRcrdCtrl1 = r->iObjCtr; |
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129 r->iObjCtr->iFeedBack = iObjCtr; |
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130 #endif |
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131 |
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132 r->Resp4xxL( aResponse, aRequest ); |
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133 iSecAgreeRecords.AppendL( r ); |
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134 CleanupStack::Pop( r ); |
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135 } |
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136 |
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137 // ---------------------------------------------------------------------------- |
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138 // Destructor |
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139 // ---------------------------------------------------------------------------- |
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140 // |
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141 CSipSecAgreeContext::~CSipSecAgreeContext() |
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142 { |
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143 iSecAgreeRecords.ResetAndDestroy(); |
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144 } |
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145 |
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146 // ---------------------------------------------------------------------------- |
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147 // CSipSecAgreeContext::MechParams |
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148 // ---------------------------------------------------------------------------- |
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149 // |
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150 MIpSecMechanismParams& CSipSecAgreeContext::MechParams() |
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151 { |
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152 return iParams; |
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153 } |
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154 |
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155 // ---------------------------------------------------------------------------- |
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156 // CSipSecAgreeContext::LocalAddress |
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157 // ---------------------------------------------------------------------------- |
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158 // |
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159 TInetAddr CSipSecAgreeContext::LocalAddress() |
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160 { |
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161 return iLocalAddress; |
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162 } |
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163 |
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164 // ---------------------------------------------------------------------------- |
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165 // CSipSecAgreeContext::PolicyServer |
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166 // ---------------------------------------------------------------------------- |
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167 // |
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168 RIpsecPolicyServ& CSipSecAgreeContext::PolicyServer() |
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169 { |
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170 return iParams.PolicyServer(); |
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171 } |
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172 |
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173 // ---------------------------------------------------------------------------- |
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174 // CSipSecAgreeContext::RemoteAddress |
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175 // ---------------------------------------------------------------------------- |
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176 // |
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177 TInetAddr CSipSecAgreeContext::RemoteAddress() |
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178 { |
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179 return iRemoteAddress; |
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180 } |
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181 |
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182 // ---------------------------------------------------------------------------- |
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183 // CSipSecAgreeContext::HasOnlyOneRecord |
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184 // ---------------------------------------------------------------------------- |
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185 // |
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186 TBool CSipSecAgreeContext::HasOnlyOneRecord() const |
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187 { |
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188 TInt pos( 0 ); |
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189 return ( NextRecord( pos ) != NULL && !NextRecord( pos ) ); |
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190 } |
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191 |
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192 // ---------------------------------------------------------------------------- |
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193 // CSipSecAgreeContext::HasRecordInState |
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194 // ---------------------------------------------------------------------------- |
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195 // |
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196 TBool |
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197 CSipSecAgreeContext::HasRecordInState( CState::TSecAgreeRecordState aState ) |
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198 { |
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199 TInt pos( 0 ); |
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200 TBool found( EFalse ); |
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201 CSipSecAgreeRecord* record = NextRecord( pos ); |
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202 for ( ; !found && record; record = NextRecord( pos ) ) |
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203 { |
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204 found = ( record->State() == aState ); |
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205 } |
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206 return found; |
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207 } |
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208 |
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209 // ---------------------------------------------------------------------------- |
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210 // CSipSecAgreeContext::SaDeleted |
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211 // ---------------------------------------------------------------------------- |
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212 // |
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213 void CSipSecAgreeContext::SaDeleted( CSipSecAgreeRecord* aRecord ) |
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214 { |
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215 DeleteRecord( aRecord ); |
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216 } |
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217 |
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218 // ---------------------------------------------------------------------------- |
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219 // CSipSecAgreeContext::SaCleared |
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220 // ---------------------------------------------------------------------------- |
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221 // |
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222 void CSipSecAgreeContext::SaCleared( CSipSecAgreeRecord* aRecord ) |
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223 { |
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224 DeleteRecord( aRecord ); |
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225 if ( iSecAgreeRecords.Count() == 0 ) |
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226 { |
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227 iParams.ContextCleared( this ); |
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228 } |
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229 } |
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230 |
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231 // ---------------------------------------------------------------------------- |
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232 // CSipSecAgreeContext::SAReady |
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233 // ---------------------------------------------------------------------------- |
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234 // |
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235 void CSipSecAgreeContext::SAReady( TBool aSuccess ) |
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236 { |
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237 if ( iObserver ) |
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238 { |
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239 iObserver->SAReady( aSuccess ); |
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240 } |
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241 } |
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242 |
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243 // ---------------------------------------------------------------------------- |
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244 // CSipSecAgreeContext::HasLongerLifetimeSA |
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245 // ---------------------------------------------------------------------------- |
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246 // |
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247 TBool |
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248 CSipSecAgreeContext::HasLongerLifetimeSA( TUint aTimeToCompareInMillisecs, |
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249 TUint& aLongerLifetimeInMillisecs ) |
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250 { |
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251 // Compare only with "inuse" records |
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252 TBool found( EFalse ); |
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253 TInt pos( 0 ); |
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254 for ( CSipSecAgreeRecord* record = NextRecord( pos ); |
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255 !found && record; |
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256 record = NextRecord( pos ) ) |
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257 { |
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258 TUint expiresAfter = record->ExpiresAfter(); |
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259 |
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260 if ( record->State() == CState::EInUse && |
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261 ( expiresAfter > aTimeToCompareInMillisecs ) ) |
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262 { |
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263 aLongerLifetimeInMillisecs = expiresAfter; |
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264 found = ETrue; |
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265 } |
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266 } |
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267 return found; |
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268 } |
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269 |
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270 // ---------------------------------------------------------------------------- |
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271 // CSipSecAgreeContext::HasSecUser |
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272 // ---------------------------------------------------------------------------- |
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273 // |
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274 TBool CSipSecAgreeContext::HasSecUser( const MSIPSecUser* aSecUser ) const |
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275 { |
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276 return aSecUser == iSecUser; |
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277 } |
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278 |
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279 // ---------------------------------------------------------------------------- |
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280 // CSipSecAgreeContext::HasNextHop |
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281 // Ignore context for which clearing has started. |
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282 // ---------------------------------------------------------------------------- |
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283 // |
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284 TBool CSipSecAgreeContext::HasNextHop( const TInetAddr& aNextHop ) const |
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285 { |
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286 return ( !aNextHop.IsWildAddr() && |
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287 iRemoteAddress.Match( aNextHop ) && |
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288 !iClearOrdered ); |
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289 } |
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290 |
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291 // ---------------------------------------------------------------------------- |
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292 // CSipSecAgreeContext::ApplyRulesL |
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293 // ---------------------------------------------------------------------------- |
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294 // |
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295 void CSipSecAgreeContext::ApplyRulesL( TSIPTransportParams& aTransportParams, |
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296 CSIPRequest& aRequest, |
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297 const TDesC8& aOutboundProxy, |
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298 MSIPSecUser* aUser ) |
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299 { |
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300 TInt pos( 0 ); |
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301 CSipSecAgreeRecord* record = NextRecord( pos ); |
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302 |
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303 if ( SipSecUtils::Match( SipStrConsts::ERegister, aRequest.Method() ) ) |
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304 { |
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305 // Other MSIPSecUsers cannot use existing context (SA) |
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306 // for registration to the same outbound proxy. |
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307 __ASSERT_ALWAYS( HasSecUser( aUser ), User::Leave( KErrInUse ) ); |
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308 |
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309 for ( ; record; record = NextRecord( pos ) ) |
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310 { |
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311 record->RegisterL( aTransportParams, aRequest, aOutboundProxy ); |
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312 } |
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313 } |
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314 else |
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315 { |
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316 for ( ; record; record = NextRecord( pos ) ) |
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317 { |
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318 record->ReguestL( aTransportParams, aRequest, aOutboundProxy ); |
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319 } |
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320 } |
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321 } |
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322 |
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323 // ---------------------------------------------------------------------------- |
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324 // CSipSecAgreeContext::ApplyRulesL |
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325 // IPSec is only interested on 401 and 200 responses |
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326 // ---------------------------------------------------------------------------- |
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327 // |
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328 void CSipSecAgreeContext::ApplyRulesL( |
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329 CSIPResponse& aResponse, |
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330 CSIPRequest& aRequest, |
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331 MSIPSecSecurityMechanismObserver& aObserver ) |
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332 { |
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333 if ( aResponse.ResponseCode() == K401Response ) |
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334 { |
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335 // First check if a new record must be created |
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336 CreateNewSecAgreeRecordIfNeededL(); |
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337 |
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338 TInt pos( 0 ); |
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339 for ( CSipSecAgreeRecord* record = NextRecord( pos ); |
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340 record; |
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341 record = NextRecord( pos ) ) |
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342 { |
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343 record->Resp4xxL( aResponse, aRequest ); |
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344 } |
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345 iObserver = &aObserver; |
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346 } |
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347 if ( aResponse.ResponseCode() == K200Response ) |
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348 { |
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349 CSIPCSeqHeader* h = static_cast<CSIPCSeqHeader*>( |
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350 SipSecUtils::SingleHeader( aResponse, SipStrConsts::ECSeqHeader ) ); |
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351 if ( h && h->Method() == _STRINGF( SipStrConsts::ERegister ) ) |
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352 { |
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353 TInt pos( 0 ); |
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354 for ( CSipSecAgreeRecord* record = NextRecord( pos ); |
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355 record; |
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356 record = NextRecord( pos ) ) |
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357 { |
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358 record->Resp2xxL( aResponse ); |
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359 } |
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360 iObserver = &aObserver; |
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361 } |
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362 } |
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363 } |
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364 |
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365 // ---------------------------------------------------------------------------- |
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366 // CSipSecAgreeContext::CreateNewSecAgreeRecordIfNeededL |
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367 // Create new record if an existing record is in InUse, Deleting or Clearing |
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368 // state. Deleting and Clearing states are included because in some very rare |
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369 // scenario 4xx might be received before SA deletion is completed, and such |
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370 // situation must not cause malfunction. |
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371 // |
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372 // |
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373 // If two records exist already. Drop one of them by setting it obsolete. |
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374 // |
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375 // Selecting the record to be obsoleted: |
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376 // SA-1's state SA-2's state drop |
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377 // ------------ ------------ ---- |
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378 // InUse Tentative..PendingPolicy SA-2 |
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379 // Old..Deleting InUse SA-1 |
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380 // |
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381 // When 2xx is received, SA-1 enters "Old" and SA-2 enters "InUse", |
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382 // so two records can't be in "InUse". |
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383 // |
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384 // |
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385 // New record uses initially same transport params, as it must share protected |
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386 // server port with old record. When new record is reserving transport, |
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387 // transport params will be updated. New record derives Security-Client and |
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388 // Security-Verify headers from response and corresponding request. |
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389 // ---------------------------------------------------------------------------- |
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390 // |
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391 void CSipSecAgreeContext::CreateNewSecAgreeRecordIfNeededL() |
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392 { |
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393 if ( HasRecordInState( CState::EInUse ) || |
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394 HasRecordInState( CState::EDeleting ) || |
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395 HasRecordInState( CState::EClearing ) ) |
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396 { |
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397 if ( !HasOnlyOneRecord() ) |
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398 { |
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399 TInt pos( 0 ); |
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400 CSipSecAgreeRecord* rec = NextRecord( pos ); |
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401 if(rec) |
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402 { |
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403 if ( rec->State() == CState::EInUse ) |
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404 { |
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405 // Record is "in use", drop the other record |
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406 rec = NextRecord( pos ); |
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407 if(rec) |
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408 { |
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409 __ASSERT_ALWAYS( rec->State() != CState::EInUse, |
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410 User::Leave( KErrGeneral ) ); |
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411 } |
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412 } |
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413 } |
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414 if(rec) |
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415 { |
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416 rec->SetObsoleteL(); |
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417 } |
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418 } |
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419 TInt pos = 0; |
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420 CSipSecAgreeRecord* rec = NextRecord( pos ); |
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421 __ASSERT_ALWAYS( rec, User::Leave( KErrNotFound ) ); |
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422 |
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423 CSipSecAgreeRecord* newRecord = |
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424 CSipSecAgreeRecord::NewLC( iStates, *this, rec->TransportParams() ); |
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425 |
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426 #ifdef CPPUNIT_TEST |
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427 if ( !rec->iObjCtr->iFeedBack->iRcrdCtrl2 ) |
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428 { |
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429 rec->iObjCtr->iFeedBack->iRcrdCtrl2 = newRecord->iObjCtr; |
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430 } |
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431 else if ( !rec->iObjCtr->iFeedBack->iRcrdCtrl3 ) |
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432 { |
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433 rec->iObjCtr->iFeedBack->iRcrdCtrl3 = newRecord->iObjCtr; |
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434 } |
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435 else if ( !rec->iObjCtr->iFeedBack->iRcrdCtrl4 ) |
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436 { |
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437 rec->iObjCtr->iFeedBack->iRcrdCtrl4 = newRecord->iObjCtr; |
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438 } |
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439 #endif |
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440 iSecAgreeRecords.AppendL( newRecord ); |
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441 CleanupStack::Pop( newRecord ); |
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442 } |
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443 } |
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444 |
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445 // ---------------------------------------------------------------------------- |
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446 // CSipSecAgreeContext::ApplyRulesL |
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447 // ---------------------------------------------------------------------------- |
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448 // |
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449 void CSipSecAgreeContext::ApplyRulesL( |
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450 RPointerArray<CSIPSecurityVerifyHeader>& aSecurityVerify ) |
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451 { |
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452 TInt pos( 0 ); |
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453 CSipSecAgreeRecord* record( NULL ); |
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454 while ( ( record = NextRecord( pos ) ) != NULL ) |
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455 { |
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456 record->ProcessSecVerifyL( aSecurityVerify ); |
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457 } |
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458 } |
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459 |
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460 // ---------------------------------------------------------------------------- |
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461 // CSipSecAgreeContext::SetAuthKeyL |
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462 // ---------------------------------------------------------------------------- |
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463 // |
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464 TBool CSipSecAgreeContext::SetAuthKeyL( const TDesC8& aAuthKey ) |
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465 { |
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466 TBool ret( EFalse ); |
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467 TInt pos( 0 ); |
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468 CSipSecAgreeRecord* record( NULL ); |
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469 while ( ( record = NextRecord( pos ) ) != NULL ) |
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470 { |
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471 ret |= record->AuthKeyL( aAuthKey ); |
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472 } |
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473 return ret; |
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474 } |
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475 |
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476 // ---------------------------------------------------------------------------- |
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477 // CSipSecAgreeContext::AuthKeyFailedL |
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478 // ---------------------------------------------------------------------------- |
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479 // |
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480 void CSipSecAgreeContext::AuthKeyFailedL() |
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481 { |
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482 // Reverse order since call might lead to deletion of record |
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483 TInt lastIndex( iSecAgreeRecords.Count() - 1 ); |
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484 for ( TInt i = lastIndex; i >= 0; --i ) |
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485 { |
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486 if ( !iSecAgreeRecords[ i ]->IsObsolete() ) |
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487 { |
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488 iSecAgreeRecords[ i ]->AuthKeyFailedL(); |
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489 } |
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490 } |
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491 } |
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492 |
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493 // ---------------------------------------------------------------------------- |
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494 // CSipSecAgreeContext::ClearL |
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495 // Affects also obsolete records. |
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496 // ---------------------------------------------------------------------------- |
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497 // |
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498 void CSipSecAgreeContext::ClearL() |
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499 { |
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500 iClearOrdered = ETrue; |
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501 |
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502 // Reverse order since call might lead to deletion of record, also whole |
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503 // context (this) will be removed if clearing leads to immediate deletion |
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504 // of all records. |
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505 TInt lastIndex( iSecAgreeRecords.Count() - 1 ); |
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506 for ( TInt i = lastIndex; i >= 0; i-- ) |
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507 { |
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508 iSecAgreeRecords[ i ]->ClearSaL(); |
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509 } |
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510 } |
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511 |
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512 // ---------------------------------------------------------------------------- |
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513 // CSipSecAgreeContext::CancelPendingOps |
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514 // Affects also obsolete records. |
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515 // ---------------------------------------------------------------------------- |
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516 // |
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517 void CSipSecAgreeContext::CancelPendingOps( |
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518 const MSIPSecSecurityMechanismObserver* aObserver ) |
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519 { |
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520 if ( iObserver && iObserver == aObserver ) |
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521 { |
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522 // Observer cannot be used anymore |
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523 iObserver = NULL; |
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524 for ( TInt i = 0; i < iSecAgreeRecords.Count(); ++i ) |
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525 { |
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526 iSecAgreeRecords[ i ]->CancelPendingOps(); |
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527 } |
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528 } |
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529 } |
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530 |
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531 // ---------------------------------------------------------------------------- |
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532 // CSipSecAgreeContext::SADBAddMsgReceived |
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533 // ---------------------------------------------------------------------------- |
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534 // |
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535 void CSipSecAgreeContext::SADBAddMsgReceived( TUint aMsgSeq, TInt aError ) |
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536 { |
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537 TInt pos( 0 ); |
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538 CSipSecAgreeRecord* record( NULL ); |
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539 while ( ( record = NextRecord( pos ) ) != NULL ) |
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540 { |
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541 record->SADBAddMsgReceived( aMsgSeq, aError ); |
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542 } |
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543 } |
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544 |
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545 // ---------------------------------------------------------------------------- |
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546 // CSipSecAgreeContext::RemovalCompleted |
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547 // Affects also obsolete records. |
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548 // ---------------------------------------------------------------------------- |
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549 // |
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550 void CSipSecAgreeContext::RemovalCompleted( TUint32 aTransportId ) |
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551 { |
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552 for ( TInt i = 0; i < iSecAgreeRecords.Count(); ++i ) |
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553 { |
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554 iSecAgreeRecords[ i ]->RemovalCompleted( aTransportId ); |
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555 } |
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556 } |
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557 |
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558 // ---------------------------------------------------------------------------- |
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559 // CSipSecAgreeContext::DeleteRecord |
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560 // Affects also obsolete records. |
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561 // ---------------------------------------------------------------------------- |
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562 // |
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563 void CSipSecAgreeContext::DeleteRecord( CSipSecAgreeRecord* aRecord ) |
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564 { |
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565 TInt i = iSecAgreeRecords.Find( aRecord ); |
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566 iSecAgreeRecords.Remove( i ); |
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567 iSecAgreeRecords.Compress(); |
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568 delete aRecord; |
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569 } |
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570 |
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571 // ---------------------------------------------------------------------------- |
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572 // CSipSecAgreeContext::NextRecord |
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573 // ---------------------------------------------------------------------------- |
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574 // |
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575 CSipSecAgreeRecord* CSipSecAgreeContext::NextRecord( TInt& aPos ) const |
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576 { |
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577 for ( TInt i = aPos; i < iSecAgreeRecords.Count(); ++i ) |
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578 { |
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579 if ( !iSecAgreeRecords[ i ]->IsObsolete() ) |
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580 { |
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581 // Set aPos point to next record |
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582 aPos = i + 1; |
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583 return iSecAgreeRecords[ i ]; |
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584 } |
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585 } |
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586 return NULL; |
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587 } |
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588 |
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589 // End of File |