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 the License "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 // Asynchronous security server active object class. |
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15 // |
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16 // |
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17 |
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18 #include <e32base.h> |
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19 #include <e32base_private.h> |
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20 |
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21 #include "c_security_svr_async.h" |
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22 #include "rm_debug_logging.h" |
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23 |
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24 using namespace Debug; |
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25 |
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26 // ctor |
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27 CSecuritySvrAsync::CSecuritySvrAsync(CSecuritySvrSession* aSession, TProcessId aAgentId) |
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28 : CActive(CActive::EPriorityStandard), |
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29 iSession(aSession), |
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30 iProcessName(NULL), |
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31 iAgentId(aAgentId), |
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32 iEventBalance(0) |
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33 { |
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34 LOG_MSG("CSecuritySvrAsync::CSecuritySvrAsync()"); |
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35 CActiveScheduler::Add(this); |
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36 } |
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37 |
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38 // returns a CSecuritySvrAsync active object associated with |
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39 // the specified agent and debugged process. |
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40 CSecuritySvrAsync* CSecuritySvrAsync::NewL(CSecuritySvrSession* aSession, const TDesC8& aProcessName, TProcessId aAgentId) |
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41 { |
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42 LOG_MSG("CSecuritySvrAsync::NewL()"); |
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43 CSecuritySvrAsync* me = new (ELeave) CSecuritySvrAsync(aSession, aAgentId); |
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44 |
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45 CleanupStack::PushL(me); |
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46 |
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47 me->ConstructL(aProcessName); |
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48 |
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49 CleanupStack::Pop(me); |
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50 |
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51 return (me); |
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52 } |
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53 |
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54 // dtor |
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55 CSecuritySvrAsync::~CSecuritySvrAsync() |
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56 { |
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57 LOG_MSG("CSecuritySvrAsync::~CSecuritySvrAsync()"); |
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58 |
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59 // NOTE: the Cancel() function calls DoCancel() which may rely on class members so be careful not |
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60 // to destroy/close data members before this call if they are needed |
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61 Cancel(); |
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62 iProcessName.Close(); |
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63 } |
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64 |
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65 // Associates the agent id and process name with the Active Object being constructed |
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66 void CSecuritySvrAsync::ConstructL(const TDesC8& aProcessName) |
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67 { |
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68 LOG_MSG("CSecuritySvrAsync::ConstructL()"); |
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69 iProcessName.CreateL(aProcessName.Length()); |
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70 iProcessName.Copy(aProcessName); |
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71 } |
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72 |
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73 // RunL() completes a previously issued call (currently only GetEvent() completion) |
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74 void CSecuritySvrAsync::RunL() |
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75 { |
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76 |
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77 LOG_MSG3("CSecuritySvrAsync::RunL() &iInfo=0x%08x, iEventBalance=%d", (TUint8*)&iInfo, iEventBalance); |
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78 |
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79 // Something bad happened in the driver |
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80 User::LeaveIfError(iStatus.Int()); |
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81 |
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82 // Write back the event data to the debug agent. |
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83 // For compatibility we need to check the size of the buffer that the |
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84 // client has passed in as the size of TEventInfo will increase over time. |
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85 // Clients can calculate the required size from the EApiConstantsTEventInfoSize entry |
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86 // in the Debug Functionality block but may still pass in buffers which |
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87 // are smaller than the Debug Security Server's calculation of sizeof(TEventInfo), |
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88 // returning KErrTooBig in this case would be |
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89 // inappropriate as we would break compatibility. |
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90 TInt dataLengthToReturn = sizeof(TEventInfo); |
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91 TInt maxLengthClientSide = iMessage.GetDesMaxLengthL(1); |
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92 if(maxLengthClientSide < dataLengthToReturn) |
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93 { |
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94 dataLengthToReturn = maxLengthClientSide; |
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95 } |
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96 |
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97 TPtr8 data((TUint8*)&iInfo,dataLengthToReturn,dataLengthToReturn); |
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98 |
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99 iMessage.WriteL(1,data,0); |
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100 |
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101 iMessage.Complete(KErrNone); |
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102 --iEventBalance; |
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103 } |
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104 |
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105 // Cancels the oustanding GetEvent call. May cope with other async calls in future. |
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106 void CSecuritySvrAsync::DoCancel() |
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107 { |
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108 LOG_MSG2("CSecuritySvrAsync::DoCancel() iEventBalance=%d", iEventBalance); |
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109 iSession->Server().iKernelDriver.CancelGetEvent(iProcessName,iAgentId.Id()); |
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110 |
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111 iMessage.Complete(KErrCancel); |
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112 iEventBalance=0; |
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113 } |
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114 |
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115 // Report any leave to the client if possible. |
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116 TInt CSecuritySvrAsync::RunError(TInt aError) |
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117 { |
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118 LOG_MSG2("CSecuritySvrAsync::RunError()=%d", aError); |
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119 iMessage.Complete(aError); |
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120 |
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121 return KErrNone; |
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122 } |
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123 |
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124 /* |
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125 * Start an asynchronous GetEvent call to the debug driver |
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126 * and activates this active object. |
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127 */ |
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128 void CSecuritySvrAsync::GetEvent(const RMessage2& aMessage) |
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129 { |
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130 iMessage = aMessage; |
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131 |
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132 iEventBalance++; |
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133 LOG_MSG5("CSecuritySvrAsync::GetEvent() this = 0x%08x, iInfo=0x%08x, iStatus=0x%08x \ |
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134 iEventBalance=%d : >SetActive() > GetEvent() ", |
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135 this, &iInfo, &iStatus, iEventBalance ); |
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136 |
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137 /* |
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138 SetActive is called before sending the message to the driver so |
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139 that we do not get stray signal panics, since the driver may complete immediately |
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140 */ |
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141 SetActive(); |
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142 iSession->Server().iKernelDriver.GetEvent(iProcessName,iAgentId.Id(),iStatus,iInfo); |
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143 } |
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144 |
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145 // Used for identifying which AO is associated with a debugged process |
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146 const TDesC8& CSecuritySvrAsync::ProcessName(void) |
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147 { |
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148 return iProcessName; |
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149 } |
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150 |
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151 // End of file - c_security_svr_async.cpp |
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152 |
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