symbian_dll.cpp
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "dllacces.h"
- #include <e32std.h>
- #include <stdio.h>
- #include <string.h>
- #include "platform/symbian/isymbian_dll_map.h"
- #include "platform/symbian/symbian_dll_map_inst.h"
- #include "hxassert.h"
- const char ErrLoadFailed[] = "DLL not loaded";
- const char ErrNoOrd1[] = "Function ordinal 1 no presentn";
- const char ErrSymbolNotFound[] = "Symbol not found";
- const char ErrInvalidOrdinal[] = "Invalid function ordinal";
- typedef int (*GetSym2Ord)(const char* pSymbolName);
- class SymbianDLLAccess : public DLLAccessImp
- {
- public:
- SymbianDLLAccess();
- virtual ~SymbianDLLAccess();
- virtual int Open(const char* dllName);
- virtual int Close() ;
- virtual void* GetSymbol(const char* symbolName);
- virtual const char* GetErrorStr() const;
- virtual char* CreateVersionStr(const char* dllName) const;
- virtual void CreateName(const char* short_name, const char* long_name,
- char* out_buf, UINT32& out_buf_len,
- UINT32 nMajor, UINT32 nMinor);
- private:
- RLibrary m_handle;
- const char* m_pErrorStr;
- };
- static HBufC* CreateNameDesc(const char* dllName)
- {
- TInt length = strlen(dllName);
- HBufC* pRet = HBufC::NewMax(length);
- if (pRet)
- {
- for (TInt i = 0;i < length ; i++)
- {
- pRet->Des()[i] = dllName[i];
- }
- }
- return pRet;
- }
- SymbianDLLAccess::SymbianDLLAccess()
- {}
- SymbianDLLAccess::~SymbianDLLAccess()
- {
- Close();
- }
- int SymbianDLLAccess::Open(const char* dllName)
- {
- int ret = DLLAccess::NO_LOAD;
- Close();
- HBufC* pDllName = CreateNameDesc(dllName);
- TInt res = m_handle.Load(pDllName->Des());
- delete pDllName;
- if (res == KErrNone)
- {
- ISymbianDLLMap* pDLLMap = HXSymbianDLLMapInstance::GetInstance();
- void* pEntrypoint = (void*)m_handle.EntryPoint();
- HX_ASSERT(pDLLMap);
- if (pDLLMap && pEntrypoint)
- {
- pDLLMap->OnLoad(pEntrypoint);
- }
- ret = DLLAccess::DLL_OK;
- }
- else
- {
- if (res == KErrNoMemory)
- {
- ret = DLLAccess::OUT_OF_MEMORY;
- }
- m_pErrorStr = ErrLoadFailed;
- }
- return ret;
- }
- int SymbianDLLAccess::Close()
- {
- if (m_handle.Handle())
- {
- ISymbianDLLMap* pDLLMap = HXSymbianDLLMapInstance::GetInstance();
- void* pEntrypoint = (void*)m_handle.EntryPoint();
-
- HX_ASSERT(pDLLMap);
- if (pDLLMap && pEntrypoint)
- {
- pDLLMap->OnUnload(pEntrypoint);
- }
- m_handle.Close();
- }
- return DLLAccess::DLL_OK;
- }
- void* SymbianDLLAccess::GetSymbol(const char* symbolName)
- {
- void* pRet = 0;
- // Get the GetSymbol2Ord function from the DLL.
- // This should always be the function in ordinal 1
- GetSym2Ord getSymbol2Ord = (GetSym2Ord)m_handle.Lookup(1);
-
- if (getSymbol2Ord)
- {
- // Get the ordinal value for the specified symbol
- int symbolOrdinal = getSymbol2Ord(symbolName);
-
- if (symbolOrdinal > 1)
- {
- // Use the ordinal to get the pointer to the symbol
- pRet = (void*)m_handle.Lookup(symbolOrdinal);
- if (!pRet)
- m_pErrorStr = ErrInvalidOrdinal;
- }
- else
- m_pErrorStr = ErrSymbolNotFound;
- }
- else
- m_pErrorStr = ErrNoOrd1;
- return pRet;
- }
- const char* SymbianDLLAccess::GetErrorStr() const
- {
- return m_pErrorStr;
- }
- char* SymbianDLLAccess::CreateVersionStr(const char* dllName) const
- {
- return 0;
- }
- void
- SymbianDLLAccess::CreateName(const char* short_name, const char* long_name,
- char* out_buf, UINT32& out_buf_len,
- UINT32 nMajor, UINT32 nMinor)
- {
- UINT32 long_name_len;
- out_buf[0] = 0;
- long_name_len = strlen(long_name);
- if (long_name_len + DLLAccess::EXTRA_BUF_LEN > out_buf_len)
- {
- ASSERT(0);
- out_buf_len = 0;
- return;
- }
- out_buf_len = sprintf(out_buf, "%s.dll", long_name); /* Flawfinder: ignore */
- }
- DLLAccessImp* DLLAccess::CreatePlatformDLLImp()
- {
- return new SymbianDLLAccess();
- }