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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <config_folders.h>
#include "odbcconfig.hxx"
#include <rtl/bootstrap.hxx>
#include <rtl/ustring.hxx>
#include <rtl/ustrbuf.hxx>
#include <osl/diagnose.h>
#include <osl/process.h>
#include <osl/thread.hxx>
#include <vcl/svapp.hxx>
#ifdef HAVE_ODBC_SUPPORT
#if defined(_WIN32)
#define ODBC_LIBRARY "ODBC32.DLL"
#endif
#ifdef UNX
#ifdef MACOSX
#define ODBC_LIBRARY "libiodbc.dylib"
#else
#define ODBC_LIBRARY_PLAIN "libodbc.so"
#define ODBC_LIBRARY_1 "libodbc.so.1"
#define ODBC_LIBRARY "libodbc.so.2"
#endif
#endif
#include <connectivity/odbc.hxx>
#else
#define ODBC_LIBRARY ""
#endif // HAVE_ODBC_SUPPORT
namespace dbaui
{
#ifdef HAVE_ODBC_SUPPORT
typedef SQLRETURN (SQL_API* TSQLManageDataSource) (SQLHWND hwndParent);
typedef SQLRETURN (SQL_API* TSQLAllocHandle) (SQLSMALLINT HandleType, SQLHANDLE InputHandle, SQLHANDLE* OutputHandlePtr);
typedef SQLRETURN (SQL_API* TSQLFreeHandle) (SQLSMALLINT HandleType, SQLHANDLE Handle);
typedef SQLRETURN (SQL_API* TSQLSetEnvAttr) (SQLHENV EnvironmentHandle, SQLINTEGER Attribute, SQLPOINTER ValuePtr, SQLINTEGER StringLength);
typedef SQLRETURN (SQL_API* TSQLDataSources) (SQLHENV EnvironmentHandle, SQLUSMALLINT Direction, SQLCHAR* ServerName,
SQLSMALLINT BufferLength1, SQLSMALLINT* NameLength1Ptr, SQLCHAR* Description, SQLSMALLINT BufferLength2, SQLSMALLINT* NameLength2Ptr);
#define NSQLAllocHandle(a,b,c) (*reinterpret_cast<TSQLAllocHandle>(m_pAllocHandle))(a,b,c)
#define NSQLFreeHandle(a,b) (*reinterpret_cast<TSQLFreeHandle>(m_pFreeHandle))(a,b)
#define NSQLSetEnvAttr(a,b,c,d) (*reinterpret_cast<TSQLSetEnvAttr>(m_pSetEnvAttr))(a,b,c,d)
#define NSQLDataSources(a,b,c,d,e,f,g,h) (*reinterpret_cast<TSQLDataSources>(m_pDataSources))(a,b,c,d,e,f,g,h)
#endif
// OOdbcLibWrapper
bool OOdbcEnumeration::load(const sal_Char* _pLibPath)
{
m_sLibPath = OUString::createFromAscii(_pLibPath);
#if defined(HAVE_ODBC_SUPPORT) && !defined(DISABLE_DYNLOADING)
// load the module
m_pOdbcLib = osl_loadModule(m_sLibPath.pData, SAL_LOADMODULE_NOW);
return (nullptr != m_pOdbcLib);
#else
return sal_False;
#endif
}
void OOdbcEnumeration::unload()
{
#if defined(HAVE_ODBC_SUPPORT) && !defined(DISABLE_DYNLOADING)
if (isLoaded())
{
osl_unloadModule(m_pOdbcLib);
m_pOdbcLib = nullptr;
}
#endif
}
oslGenericFunction OOdbcEnumeration::loadSymbol(const sal_Char* _pFunctionName)
{
return osl_getFunctionSymbol(m_pOdbcLib, OUString::createFromAscii(_pFunctionName).pData);
}
struct OdbcTypesImpl
{
#ifdef HAVE_ODBC_SUPPORT
SQLHANDLE hEnvironment;
OdbcTypesImpl() : hEnvironment(nullptr) { }
#else
void* pDummy;
#endif
};
OOdbcEnumeration::OOdbcEnumeration()
:m_pOdbcLib(nullptr)
#ifdef HAVE_ODBC_SUPPORT
,m_pAllocHandle(nullptr)
,m_pFreeHandle(nullptr)
,m_pSetEnvAttr(nullptr)
,m_pDataSources(nullptr)
,m_pImpl(new OdbcTypesImpl)
#endif
{
bool bLoaded = load(ODBC_LIBRARY);
#ifdef ODBC_LIBRARY_1
if ( !bLoaded )
bLoaded = load(ODBC_LIBRARY_1);
#endif
#ifdef ODBC_LIBRARY_PLAIN
if ( !bLoaded )
bLoaded = load(ODBC_LIBRARY_PLAIN);
#endif
if ( bLoaded )
{
#ifdef HAVE_ODBC_SUPPORT
// load the generic functions
m_pAllocHandle = loadSymbol("SQLAllocHandle");
m_pFreeHandle = loadSymbol("SQLFreeHandle");
m_pSetEnvAttr = loadSymbol("SQLSetEnvAttr");
m_pDataSources = loadSymbol("SQLDataSources");
// all or nothing
if (!m_pAllocHandle || !m_pSetEnvAttr || !m_pDataSources || !m_pFreeHandle)
{
unload();
m_pAllocHandle = m_pFreeHandle = m_pSetEnvAttr = m_pDataSources = nullptr;
}
#endif
}
}
OOdbcEnumeration::~OOdbcEnumeration()
{
freeEnv();
unload();
}
// OOdbcEnumeration
bool OOdbcEnumeration::allocEnv()
{
OSL_ENSURE(isLoaded(), "OOdbcEnumeration::allocEnv: not loaded!");
if (!isLoaded())
return false;
#ifdef HAVE_ODBC_SUPPORT
if (m_pImpl->hEnvironment)
// nothing to do
return true;
SQLRETURN nResult = NSQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &m_pImpl->hEnvironment);
if (SQL_SUCCESS != nResult)
// can't do anything without environment
return false;
NSQLSetEnvAttr(m_pImpl->hEnvironment, SQL_ATTR_ODBC_VERSION, reinterpret_cast<SQLPOINTER>(SQL_OV_ODBC3), SQL_IS_INTEGER);
return true;
#else
return sal_False;
#endif
}
void OOdbcEnumeration::freeEnv()
{
#ifdef HAVE_ODBC_SUPPORT
if (m_pImpl->hEnvironment)
NSQLFreeHandle(SQL_HANDLE_ENV, m_pImpl->hEnvironment);
m_pImpl->hEnvironment = nullptr;
#endif
}
void OOdbcEnumeration::getDatasourceNames(std::set<OUString>& _rNames)
{
OSL_ENSURE(isLoaded(), "OOdbcEnumeration::getDatasourceNames: not loaded!");
if (!isLoaded())
return;
if (!allocEnv())
{
OSL_FAIL("OOdbcEnumeration::getDatasourceNames: could not allocate an ODBC environment!");
return;
}
#ifdef HAVE_ODBC_SUPPORT
// now that we have an environment collect the data source names
UCHAR szDSN[SQL_MAX_DSN_LENGTH+1];
SWORD pcbDSN;
UCHAR szDescription[1024+1];
SWORD pcbDescription;
SQLRETURN nResult = SQL_SUCCESS;
rtl_TextEncoding nTextEncoding = osl_getThreadTextEncoding();
for ( nResult = NSQLDataSources(m_pImpl->hEnvironment, SQL_FETCH_FIRST, szDSN, sizeof(szDSN), &pcbDSN, szDescription, sizeof(szDescription)-1, &pcbDescription);
;
nResult = NSQLDataSources(m_pImpl->hEnvironment, SQL_FETCH_NEXT, szDSN, sizeof(szDSN), &pcbDSN, szDescription, sizeof(szDescription)-1, &pcbDescription)
)
{
if (nResult != SQL_SUCCESS)
// no further error handling
break;
else
{
OUString aCurrentDsn(reinterpret_cast<const char*>(szDSN),pcbDSN, nTextEncoding);
_rNames.insert(aCurrentDsn);
}
}
#else
(void) _rNames;
#endif
}
#ifdef HAVE_ODBC_ADMINISTRATION
// ProcessTerminationWait
class ProcessTerminationWait : public ::osl::Thread
{
oslProcess m_hProcessHandle;
Link<void*,void> m_aFinishHdl;
ImplSVEvent* m_nEventId;
public:
ProcessTerminationWait( oslProcess _hProcessHandle, const Link<void*,void>& _rFinishHdl )
: m_hProcessHandle( _hProcessHandle )
, m_aFinishHdl( _rFinishHdl )
, m_nEventId(nullptr)
{
}
void disableCallback()
{
// if finished event not posted yet, disable by turning it to a no-op Link
m_aFinishHdl = Link<void*, void>();
if (m_nEventId)
{
// already posted, remove it
Application::RemoveUserEvent(m_nEventId);
m_nEventId = nullptr;
}
}
void receivedCallback()
{
m_nEventId = nullptr;
}
protected:
virtual void SAL_CALL run() override
{
osl_setThreadName("dbaui::ProcessTerminationWait");
osl_joinProcess( m_hProcessHandle );
osl_freeProcessHandle( m_hProcessHandle );
m_nEventId = Application::PostUserEvent( m_aFinishHdl );
}
};
// OOdbcManagement
OOdbcManagement::OOdbcManagement(const Link<void*,void>& rAsyncFinishCallback)
: m_aAsyncFinishCallback(rAsyncFinishCallback)
{
}
OOdbcManagement::~OOdbcManagement()
{
// wait for our thread to be finished
if ( m_pProcessWait.get() )
m_pProcessWait->join();
}
bool OOdbcManagement::manageDataSources_async()
{
OSL_PRECOND( !isRunning(), "OOdbcManagement::manageDataSources_async: still running from the previous call!" );
if ( isRunning() )
return false;
// this is done in an external process, due to #i78733#
// (and note this whole functionality is supported on Windows only, ATM)
OUString sExecutableName( "$BRAND_BASE_DIR/" LIBO_LIBEXEC_FOLDER "/odbcconfig.exe" );
::rtl::Bootstrap::expandMacros( sExecutableName ); //TODO: detect failure
oslProcess hProcessHandle(nullptr);
oslProcessError eError = osl_executeProcess( sExecutableName.pData, nullptr, 0, 0, nullptr, nullptr, nullptr, 0, &hProcessHandle );
if ( eError != osl_Process_E_None )
return false;
m_pProcessWait.reset( new ProcessTerminationWait( hProcessHandle, m_aAsyncFinishCallback ) );
m_pProcessWait->create();
return true;
}
void OOdbcManagement::disableCallback()
{
if (m_pProcessWait.get())
m_pProcessWait->disableCallback();
}
void OOdbcManagement::receivedCallback()
{
if (m_pProcessWait.get())
m_pProcessWait->receivedCallback();
}
bool OOdbcManagement::isRunning() const
{
return ( m_pProcessWait.get() && m_pProcessWait->isRunning() );
}
#endif // HAVE_ODBC_ADMINISTRATION
} // namespace dbaui
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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