1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/kernelhwsrv/kerneltest/f32test/plugins/version_2beta/hex/t_hexhook.cpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,257 @@
1.4 +// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of the License "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +// f32test\plugins\hex\t_hexhook.cpp
1.18 +//
1.19 +//
1.20 +
1.21 +#include "t_hexhook.h"
1.22 +#include <f32pluginutils.h>
1.23 +#include "hex.h"
1.24 +
1.25 +_LIT(KHexPluginName, "This is a test plugin which converts binary data to hex");
1.26 +
1.27 +
1.28 +/**
1.29 +Leaving New function for the plugin
1.30 +@internalComponent
1.31 +*/
1.32 +CTestHexHook* CTestHexHook::NewL()
1.33 + {
1.34 + return new(ELeave) CTestHexHook;
1.35 + }
1.36 +
1.37 +
1.38 +/**
1.39 +Constructor for the plugin
1.40 +@internalComponent
1.41 +*/
1.42 +CTestHexHook::CTestHexHook()
1.43 + {
1.44 + }
1.45 +
1.46 +
1.47 +/**
1.48 +The destructor for the test hex plugin hook.
1.49 +@internalComponent
1.50 +*/
1.51 +CTestHexHook::~CTestHexHook()
1.52 + {
1.53 + iFs.Close();
1.54 + }
1.55 +
1.56 +/**
1.57 +Initialise the hex plugin.
1.58 +@internalComponent
1.59 +*/
1.60 +void CTestHexHook::InitialiseL()
1.61 + {
1.62 + User::LeaveIfError(RegisterIntercept(EFsFileOpen, EPreIntercept));
1.63 + User::LeaveIfError(RegisterIntercept(EFsFileRead, EPrePostIntercept));
1.64 +// User::LeaveIfError(RegisterIntercept(EFsFileWrite, EPreIntercept));
1.65 +
1.66 + User::LeaveIfError(iFs.Connect());
1.67 + }
1.68 +
1.69 +/**
1.70 +@internalComponent
1.71 +*/
1.72 +TInt CTestHexHook::DoRequestL(TFsPluginRequest& aRequest)
1.73 + {
1.74 + TInt err = KErrNotSupported;
1.75 +
1.76 + TInt function = aRequest.Function();
1.77 +
1.78 + iDrvNumber = aRequest.DriveNumber();
1.79 +
1.80 + switch(function)
1.81 + {
1.82 + case EFsFileOpen:
1.83 + err = HexFileOpen(aRequest);
1.84 + break;
1.85 +
1.86 + case EFsFileRead:
1.87 + // Post intercept does nothing except prove that it is possible and that no deadlock occurs.
1.88 + // plugin always calls FileRead() when receiving a EFsFileRead, and so the mesage gets completed
1.89 + // by the plugin and has to be post intercepted by the plugin (if registered to post-intercept the request)
1.90 + // and any plugins above it.
1.91 +
1.92 + if (!(aRequest.IsPostOperation()))
1.93 + err = HexFileRead(aRequest);
1.94 + break;
1.95 +
1.96 + default:
1.97 + break;
1.98 + }
1.99 +
1.100 + return err;
1.101 + }
1.102 +
1.103 +
1.104 +/**
1.105 +@internalComponent
1.106 +*/
1.107 +TInt CTestHexHook::HexFileOpen(TFsPluginRequest& aRequest)
1.108 + {
1.109 + TFileName fileName;
1.110 +
1.111 +
1.112 +
1.113 +// TInt driveNumber = aRequest.DriveNumber();
1.114 +
1.115 + TInt err = GetName(&aRequest, fileName);
1.116 + if(err != KErrNone)
1.117 + return(err);
1.118 +
1.119 +// err = ScanFile(fileName);
1.120 +
1.121 + return err;
1.122 + }
1.123 +
1.124 +
1.125 +/**
1.126 +@internalComponent
1.127 +*/
1.128 +TInt CTestHexHook::HexFileRead(TFsPluginRequest& aRequest)
1.129 + {
1.130 + TFileName fileName;
1.131 +
1.132 +// TInt driveNumber = aRequest.DriveNumber();
1.133 +
1.134 + TInt r = GetName(&aRequest, fileName);
1.135 + if(r != KErrNone)
1.136 + return(r);
1.137 +
1.138 + TInt len, pos;
1.139 + r = GetFileAccessInfo(&aRequest, len, pos);
1.140 + if (r != KErrNone)
1.141 + return r;
1.142 +
1.143 + // if length is ODD, then it can't be hex
1.144 + if (len & 0x01)
1.145 + return KErrCorrupt;
1.146 +
1.147 + TInt offset = 0;
1.148 + while(len > 0)
1.149 + {
1.150 + TInt readLen = Min(len<<1, iHexBuf.MaxLength());
1.151 +
1.152 + // read from file
1.153 + TPtr8 ptrHex((TUint8*) iHexBuf.Ptr(), readLen, readLen);
1.154 + r = FileRead(aRequest, ptrHex, pos<<1);
1.155 + if (r != KErrNone)
1.156 + return r;
1.157 + readLen = ptrHex.Length();
1.158 + if (readLen == 0)
1.159 + return KErrCompletion;
1.160 +
1.161 + TInt binLen = readLen>>1;
1.162 + TPtr8 ptrBin((TUint8*) iBinBuf.Ptr(), binLen, binLen);
1.163 + DeHex(ptrHex, ptrBin);
1.164 +
1.165 + // write back to client (may be an app or another plugin)
1.166 + r = ClientWrite(aRequest, ptrBin, offset);
1.167 + offset+= binLen;
1.168 + len-= binLen;
1.169 + pos+= readLen;
1.170 + }
1.171 +
1.172 + return KErrCompletion;
1.173 + }
1.174 +
1.175 +
1.176 +
1.177 +/**
1.178 +@internalComponent
1.179 +*/
1.180 +TInt CTestHexHook::HexPluginName(TDes& aName)
1.181 + {
1.182 + aName = KHexPluginName;
1.183 + return KErrNone;
1.184 + }
1.185 +
1.186 +
1.187 +
1.188 +
1.189 +//factory functions
1.190 +
1.191 +class CHexHookFactory : public CFsPluginFactory
1.192 + {
1.193 +public:
1.194 + CHexHookFactory();
1.195 + virtual TInt Install();
1.196 + virtual CFsPlugin* NewPluginL();
1.197 + virtual CFsPlugin* NewPluginConnL();
1.198 + virtual TInt UniquePosition();
1.199 + };
1.200 +
1.201 +/**
1.202 +Constructor for the plugin factory
1.203 +@internalComponent
1.204 +*/
1.205 +CHexHookFactory::CHexHookFactory()
1.206 + {
1.207 + }
1.208 +
1.209 +/**
1.210 +Install function for the plugin factory
1.211 +@internalComponent
1.212 +*/
1.213 +TInt CHexHookFactory::Install()
1.214 + {
1.215 + iSupportedDrives = KPluginAutoAttach;
1.216 +
1.217 + _LIT(KHexHookName,"HexHook");
1.218 + return(SetName(&KHexHookName));
1.219 + }
1.220 +
1.221 +/**
1.222 +@internalComponent
1.223 +*/
1.224 +TInt CHexHookFactory::UniquePosition()
1.225 + {
1.226 + return(0x4EC);
1.227 + }
1.228 +
1.229 +/**
1.230 +Plugin factory function
1.231 +@internalComponent
1.232 +*/
1.233 +CFsPlugin* CHexHookFactory::NewPluginL()
1.234 +
1.235 + {
1.236 + return CTestHexHook::NewL();
1.237 + }
1.238 +
1.239 +/**
1.240 +Plugin factory function
1.241 +@internalComponent
1.242 +*/
1.243 +CFsPlugin* CHexHookFactory::NewPluginConnL()
1.244 +
1.245 + {
1.246 + return CTestHexHook::NewL();
1.247 + }
1.248 +
1.249 +/**
1.250 +Create a new Plugin
1.251 +@internalComponent
1.252 +*/
1.253 +extern "C" {
1.254 +
1.255 +EXPORT_C CFsPluginFactory* CreateFileSystem()
1.256 + {
1.257 + return(new CHexHookFactory());
1.258 + }
1.259 +}
1.260 +