author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 12 Mar 2010 15:46:41 +0200 | |
branch | RCL_3 |
changeset 2 | 4843bb5893b6 |
parent 0 | d0791faffa3f |
child 4 | 60a94a45d437 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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|
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#include <f32file.h> |
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#include <mtp/cmtpobjectmetadata.h> |
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#include <mtp/mmtpconnection.h> |
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#include <mtp/mmtpdataproviderframework.h> |
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#include <mtp/mmtpobjectmgr.h> |
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#include <mtp/mmtpstoragemgr.h> |
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|
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#include "cmtprequestchecker.h" |
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#include "rmtpdpsingletons.h" |
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#include "cmtpfsexclusionmgr.h" |
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|
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static const TInt KMTPRequestCheckerHandleGranularity = 2; |
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__FLOG_STMT(_LIT8(KComponent,"MTPRequestChecker");) |
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|
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/** |
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Two-phase construction method |
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@param aFramework The data provider framework |
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@param aConnection The connection object |
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@return a pointer to the created request checker object |
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*/ |
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EXPORT_C CMTPRequestChecker* CMTPRequestChecker::NewL(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection) |
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{ |
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CMTPRequestChecker* self = new (ELeave) CMTPRequestChecker(aFramework, aConnection); |
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return self; |
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} |
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|
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/** |
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Destructor |
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*/ |
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EXPORT_C CMTPRequestChecker::~CMTPRequestChecker() |
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{ |
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iHandles.Close(); |
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iObjectArray.ResetAndDestroy(); |
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__FLOG_CLOSE; |
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} |
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|
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/** |
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Verfiy the request. It check the request header first (session id and transaction code), and check for special values, last |
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it iterates through the verification elements for checking individul parameters in the request |
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|
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@param aRequest The request object to verify |
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@param aCount The number of verification elements |
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@param aElementInfo The array of verification elements |
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@return reponse code to return to the initiator |
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*/ |
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EXPORT_C TMTPResponseCode CMTPRequestChecker::VerifyRequestL(const TMTPTypeRequest& aRequest, TInt aCount, const TMTPRequestElementInfo* aElementInfo) |
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{ |
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TMTPResponseCode result = EMTPRespCodeOK; |
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iHandles.Close(); |
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iObjectArray.ResetAndDestroy(); |
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result = CheckRequestHeader(aRequest); |
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|
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for (TInt i = 0; i < aCount && EMTPRespCodeOK == result; i++) |
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{ |
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TUint32 parameter = aRequest.Uint32(aElementInfo[i].iElementIndex); |
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if (!IsSpecialValue(parameter, aElementInfo[i])) |
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{ |
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switch (aElementInfo[i].iElementType) |
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{ |
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case EMTPElementTypeSessionID: |
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result = VerifySessionId(parameter, aElementInfo[i]); |
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break; |
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case EMTPElementTypeObjectHandle: |
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result = VerifyObjectHandleL(parameter, aElementInfo[i]); |
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break; |
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case EMTPElementTypeStorageId: |
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result = VerifyStorageIdL(parameter, aElementInfo[i]); |
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break; |
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case EMTPElementTypeFormatCode: |
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result = VerifyFormatCode(parameter, aElementInfo[i]); |
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break; |
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default: |
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User::Invariant(); // Should never run |
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break; |
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} |
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} |
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} |
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94 |
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return result; |
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} |
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99 |
/** |
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Return the object info for the handle. This is to remove extra expensive DMBS retrieval operations. |
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101 |
|
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@param aHandle the handle of the object requested |
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|
103 |
@return an object info for the handle |
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|
104 |
*/ |
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|
105 |
EXPORT_C CMTPObjectMetaData* CMTPRequestChecker::GetObjectInfo(TUint32 aHandle) const |
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|
106 |
{ |
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|
107 |
CMTPObjectMetaData* result = NULL; |
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diff
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|
108 |
TInt count = iHandles.Count(); |
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|
109 |
for(TInt i = 0; i < count; i++) |
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|
110 |
{ |
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|
111 |
if (iHandles[i] == aHandle) |
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|
112 |
{ |
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|
113 |
result = iObjectArray[i]; |
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|
114 |
break; |
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|
115 |
} |
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|
116 |
} |
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|
117 |
return result; |
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|
118 |
} |
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|
119 |
|
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|
120 |
/** |
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|
121 |
Check the request header portion (session Id and transaction code) |
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122 |
@param aRequest the request object to check |
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|
123 |
@return repsonse code to return to initiator |
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124 |
*/ |
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|
125 |
TMTPResponseCode CMTPRequestChecker::CheckRequestHeader(const TMTPTypeRequest& aRequest) const |
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|
126 |
{ |
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127 |
TMTPResponseCode ret = EMTPRespCodeOK; |
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|
128 |
TUint16 operationCode = aRequest.Uint16(TMTPTypeRequest::ERequestOperationCode); |
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|
129 |
TUint32 sessionId = aRequest.Uint32(TMTPTypeRequest::ERequestSessionID); |
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|
130 |
TUint32 transactionCode = aRequest.Uint32(TMTPTypeRequest::ERequestTransactionID); |
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|
131 |
|
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|
132 |
if (operationCode == EMTPOpCodeCloseSession || operationCode == EMTPOpCodeResetDevice) |
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|
133 |
{ |
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|
134 |
if (sessionId != 0) |
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135 |
{ |
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|
136 |
ret = EMTPRespCodeInvalidParameter; |
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|
137 |
} |
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|
138 |
} |
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Revision: 201003
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|
139 |
else |
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Revision: 201003
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140 |
{ |
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|
141 |
// requests that are valid when there's no opened session. |
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Revision: 201003
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|
142 |
if (sessionId == 0) |
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|
143 |
{ |
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|
144 |
switch (operationCode) |
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|
145 |
{ |
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Revision: 201003
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|
146 |
case EMTPOpCodeGetDeviceInfo: |
d0791faffa3f
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|
147 |
case EMTPOpCodeOpenSession: |
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|
148 |
{ |
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|
149 |
// Transaction id must be 0 when called out side an active session. |
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150 |
if (transactionCode != 0) |
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|
151 |
{ |
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|
152 |
ret = EMTPRespCodeInvalidTransactionID; |
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153 |
} |
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|
154 |
|
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|
155 |
} |
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Revision: 201003
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|
156 |
break; |
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Revision: 201003
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parents:
diff
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|
157 |
|
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|
158 |
default: |
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Revision: 201003
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parents:
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|
159 |
ret = EMTPRespCodeSessionNotOpen; |
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Revision: 201003
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parents:
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|
160 |
break; |
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Revision: 201003
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|
161 |
} |
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Revision: 201003
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parents:
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|
162 |
} |
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Revision: 201003
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|
163 |
else if (!iConnection.SessionWithMTPIdExists(sessionId)) |
d0791faffa3f
Revision: 201003
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parents:
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|
164 |
{ |
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Revision: 201003
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parents:
diff
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|
165 |
ret = EMTPRespCodeSessionNotOpen; |
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Revision: 201003
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parents:
diff
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|
166 |
} |
d0791faffa3f
Revision: 201003
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parents:
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|
167 |
} |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
168 |
return ret; |
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Revision: 201003
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parents:
diff
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|
169 |
} |
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Revision: 201003
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parents:
diff
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|
170 |
|
d0791faffa3f
Revision: 201003
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parents:
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|
171 |
/** |
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Revision: 201003
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parents:
diff
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|
172 |
Check the session id in the request parameter (NOTE the session id is different from the one in the request header), |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
173 |
this usually only applies to the OpenSession request |
d0791faffa3f
Revision: 201003
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parents:
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|
174 |
@param aSessionId Session id of the request. |
d0791faffa3f
Revision: 201003
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parents:
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|
175 |
@param aElementInfo ElementInfo data array to check against. |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
176 |
@return repsonse code to return to initiator |
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Revision: 201003
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parents:
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|
177 |
*/ |
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Revision: 201003
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parents:
diff
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|
178 |
TMTPResponseCode CMTPRequestChecker::VerifySessionId(TUint32 aSessionId, const TMTPRequestElementInfo& /*aElementInfo*/) const |
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|
179 |
{ |
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Revision: 201003
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|
180 |
TMTPResponseCode ret = EMTPRespCodeOK; |
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Revision: 201003
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parents:
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|
181 |
|
d0791faffa3f
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|
182 |
if (aSessionId != 0) |
d0791faffa3f
Revision: 201003
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parents:
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|
183 |
{ |
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Revision: 201003
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parents:
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|
184 |
if (iConnection.SessionWithMTPIdExists(aSessionId)) |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
185 |
{ |
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Revision: 201003
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parents:
diff
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|
186 |
ret = EMTPRespCodeSessionAlreadyOpen; |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
187 |
} |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
188 |
} |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
189 |
else |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
190 |
{ |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
191 |
ret = EMTPRespCodeInvalidParameter; |
d0791faffa3f
Revision: 201003
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parents:
diff
changeset
|
192 |
} |
d0791faffa3f
Revision: 201003
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parents:
diff
changeset
|
193 |
|
d0791faffa3f
Revision: 201003
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parents:
diff
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|
194 |
return ret; |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
195 |
} |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
196 |
|
d0791faffa3f
Revision: 201003
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parents:
diff
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|
197 |
/** |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
198 |
Check the object handle in the request parameter, whether the handle is in the object store, read/write, file/dir |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
199 |
@param aHandle Object handle to be checked. |
d0791faffa3f
Revision: 201003
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parents:
diff
changeset
|
200 |
@param aElementInfo Element info array to be checked against. |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
201 |
@return repsonse code to return to initiator |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
202 |
*/ |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
203 |
TMTPResponseCode CMTPRequestChecker::VerifyObjectHandleL(TUint32 aHandle, const TMTPRequestElementInfo& aElementInfo) |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
204 |
{ |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
205 |
__FLOG_VA((_L8("VerifyObjectHandleL entry with handle 0x%08X"), aHandle)); |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
206 |
TMTPResponseCode ret = EMTPRespCodeOK; |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
207 |
|
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CMTPObjectMetaData* object(CMTPObjectMetaData::NewLC()); |
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TBool result(iFramework.ObjectMgr().ObjectL(aHandle, *object)); |
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iObjectArray.AppendL(object); |
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CleanupStack::Pop(object); |
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iHandles.AppendL(aHandle); |
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213 |
|
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// Obj handle exists |
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if (result) |
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216 |
{ |
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TUint storageID = object->Uint(CMTPObjectMetaData::EStorageId); |
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CMTPStorageMetaData* storageMetaData = (CMTPStorageMetaData *)& iFramework.StorageMgr().StorageL(storageID); |
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if (storageMetaData->Uint(CMTPStorageMetaData::EStorageSystemType) != CMTPStorageMetaData::ESystemTypeDefaultFileSystem) |
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220 |
{ |
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return ret; |
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} |
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223 |
|
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const TDesC& suid(object->DesC(CMTPObjectMetaData::ESuid)); |
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TEntry entry; |
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TInt err = iFramework.Fs().Entry(suid, entry); |
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227 |
|
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if ( (object->Uint(CMTPObjectMetaData::EFormatCode) == EMTPFormatCodeAssociation) && |
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(object->Uint(CMTPObjectMetaData::EFormatSubCode) != EMTPAssociationTypeGenericFolder ) ) |
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230 |
{ |
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// Special association type .. not always present on the filesystem. |
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return ret; |
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233 |
} |
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234 |
else |
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235 |
{ |
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User::LeaveIfError(err); |
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237 |
} |
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238 |
|
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if (aElementInfo.iElementAttr & EMTPElementAttrWrite) |
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240 |
{ |
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if (entry.IsReadOnly()) |
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242 |
{ |
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ret = EMTPRespCodeObjectWriteProtected; |
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244 |
} |
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} |
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246 |
|
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//((EMTPRespCodeOK == ret) && (aElementInfo.iElementAttr & EMTPElementAttrFileOrDir)) is |
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// covered implicitly here, EMTPRespCodeOK will be returned. It is a valid case for an object to be either a folder or file |
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// for certain operation's request parameter, for instance the first parameter of copyObject or |
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// moveObject can be either a file or a directory. |
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251 |
|
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// Other cases. |
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if ((EMTPRespCodeOK == ret) && (aElementInfo.iElementAttr & EMTPElementAttrFile)) |
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254 |
{ |
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if (entry.IsDir()) |
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256 |
{ |
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ret = EMTPRespCodeInvalidObjectHandle; |
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258 |
} |
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259 |
} |
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260 |
|
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if ((EMTPRespCodeOK == ret) && (aElementInfo.iElementAttr & EMTPElementAttrDir)) |
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262 |
{ |
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if (!entry.IsDir()) |
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264 |
{ |
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ret = EMTPRespCodeInvalidParentObject; |
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266 |
} |
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267 |
} |
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268 |
|
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269 |
} |
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270 |
else |
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271 |
{ |
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__FLOG(_L8("Object does not exist.")); |
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ret = EMTPRespCodeInvalidObjectHandle; |
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274 |
} |
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__FLOG_VA((_L8("VerifyObjectHandleL exit with repsonse code 0x%04X"), ret)); |
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return ret; |
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277 |
} |
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278 |
|
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279 |
/** |
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280 |
Check the storage id parameter in the request, read/write attributes |
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@param aStorageId Storage id to be checked. |
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@param aElementInfo Element info array to be checked against. |
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@return repsonse code to return to initiator |
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284 |
*/ |
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TMTPResponseCode CMTPRequestChecker::VerifyStorageIdL(TUint32 aStorageId, const TMTPRequestElementInfo& aElementInfo) const |
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286 |
{ |
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MMTPStorageMgr& mgr(iFramework.StorageMgr()); |
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TMTPResponseCode ret(EMTPRespCodeOK); |
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if (!mgr.ValidStorageId(aStorageId)) |
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290 |
{ |
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ret = EMTPRespCodeInvalidStorageID; |
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292 |
} |
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else if (!mgr.LogicalStorageId(aStorageId)) |
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294 |
{ |
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ret = EMTPRespCodeStoreNotAvailable; |
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296 |
} |
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297 |
else |
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298 |
{ |
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TInt drive(mgr.DriveNumber(aStorageId)); |
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// StorageIDs which are not system owned do not correspond to drives. |
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if (drive != KErrNotFound) |
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302 |
{ |
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303 |
TDriveInfo info; |
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User::LeaveIfError(iFramework.Fs().Drive(info, drive)); |
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if (info.iType == EMediaNotPresent) |
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306 |
{ |
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307 |
/* |
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308 |
Race conditions between media ejection and request processing |
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309 |
may result in a previously valid storage ID no longer being |
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310 |
available. |
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311 |
*/ |
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312 |
ret = EMTPRespCodeStoreNotAvailable; |
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313 |
} |
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else if ((aElementInfo.iElementAttr & EMTPElementAttrWrite) && |
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315 |
((info.iMediaAtt & KMediaAttWriteProtected) || |
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Revision: 201003
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316 |
(info.iDriveAtt & KDriveAttRom))) |
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317 |
{ |
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ret = EMTPRespCodeStoreReadOnly; |
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319 |
} |
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320 |
} |
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321 |
} |
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322 |
return ret; |
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323 |
} |
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324 |
|
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325 |
/** |
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|
326 |
Check the format code parameter in the request, |
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327 |
@param aStorageId aFormatCode to be checked. |
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328 |
@param aElementInfo Element info array to be checked against. |
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Revision: 201003
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329 |
@return repsonse code to return to initiator |
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330 |
*/ |
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331 |
TMTPResponseCode CMTPRequestChecker::VerifyFormatCode(TUint32 aFormatCode, const TMTPRequestElementInfo& aElementInfo) const |
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332 |
{ |
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333 |
TMTPResponseCode ret = EMTPRespCodeInvalidObjectFormatCode; |
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334 |
|
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335 |
if (aElementInfo.iElementAttr == EMTPElementAttrFormatEnums) |
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336 |
{ |
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TUint32* formatArray = (TUint32*)(aElementInfo.iValue1); |
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338 |
TUint32 i = 0; |
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for(i = 0; i < aElementInfo.iValue2; i++) |
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340 |
{ |
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341 |
if (aFormatCode == formatArray[i]) |
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Revision: 201003
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342 |
{ |
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Revision: 201003
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343 |
ret = EMTPRespCodeOK; |
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Revision: 201003
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344 |
break; |
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Revision: 201003
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345 |
} |
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Revision: 201003
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346 |
} |
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347 |
} |
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Revision: 201003
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348 |
else if (aFormatCode >= EMTPFormatCodePTPStart && aFormatCode <= EMTPFormatCodeMTPEnd) |
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349 |
{ |
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Revision: 201003
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350 |
ret = EMTPRespCodeOK; |
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Revision: 201003
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351 |
} |
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Revision: 201003
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|
352 |
|
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Revision: 201003
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353 |
return ret; |
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Revision: 201003
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354 |
} |
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Revision: 201003
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parents:
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|
355 |
|
d0791faffa3f
Revision: 201003
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parents:
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356 |
/** |
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Revision: 201003
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parents:
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|
357 |
Check if the parameter is one of the special values |
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Revision: 201003
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parents:
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358 |
@param aParameter The parameter value in the request |
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Revision: 201003
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359 |
@param aElementInfo The ElementInfo for the parameter |
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Revision: 201003
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360 |
@return ETrue if the parameter is one of the special values, otherwise, EFalse |
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Revision: 201003
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parents:
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361 |
*/ |
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Revision: 201003
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parents:
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|
362 |
TBool CMTPRequestChecker::IsSpecialValue(TUint32 aParameter, const TMTPRequestElementInfo& aElementInfo) const |
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Revision: 201003
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|
363 |
{ |
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Revision: 201003
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|
364 |
TBool result = EFalse; |
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Revision: 201003
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parents:
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365 |
switch(aElementInfo.iCount) |
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Revision: 201003
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parents:
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|
366 |
{ |
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Revision: 201003
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|
367 |
case 1: |
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Revision: 201003
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368 |
result = (aParameter == aElementInfo.iValue1); |
d0791faffa3f
Revision: 201003
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parents:
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|
369 |
break; |
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Revision: 201003
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parents:
diff
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|
370 |
case 2: |
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Revision: 201003
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parents:
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|
371 |
result = (aParameter == aElementInfo.iValue1 || aParameter == aElementInfo.iValue2); |
d0791faffa3f
Revision: 201003
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parents:
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changeset
|
372 |
break; |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
373 |
default: |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
374 |
break; |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
375 |
} |
d0791faffa3f
Revision: 201003
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parents:
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|
376 |
return result; |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
377 |
} |
d0791faffa3f
Revision: 201003
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parents:
diff
changeset
|
378 |
|
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
379 |
/** |
d0791faffa3f
Revision: 201003
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parents:
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|
380 |
Standard c++ constructor |
d0791faffa3f
Revision: 201003
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parents:
diff
changeset
|
381 |
*/ |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
382 |
CMTPRequestChecker::CMTPRequestChecker(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection) |
d0791faffa3f
Revision: 201003
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parents:
diff
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|
383 |
:iFramework(aFramework), |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
384 |
iConnection(aConnection), |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
385 |
iHandles(KMTPRequestCheckerHandleGranularity), |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
386 |
iObjectArray(KMTPRequestCheckerHandleGranularity) |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
387 |
{ |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
388 |
__FLOG_OPEN(KMTPSubsystem, KComponent); |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
389 |
} |
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
390 |
|
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
391 |
|
d0791faffa3f
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
392 |