DynamicLibrary DynamicLibrary::getRunningProcess() {
os::clearError(__LINE__, __FILE__);
DynamicLibrary runningProcess = DynamicLibrary();
#ifdef MACE_WINAPI
runningProcess.dll = GetModuleHandle(nullptr);
MACE_CONSTEXPR char* errorMessage = "Handle to running process was nullptr";
#elif defined(MACE_POSIX)
//the NULL macro is used instead of nullptr because dlopen accepts an argument of 0 specifically
//it needs to be an integer, not a pointer value.
runningProcess.dll = dlopen(NULL, RTLD_LOCAL | RTLD_LAZY);
char* systemError = dlerror();
const char* errorMessage;
if (systemError == nullptr) {
errorMessage = "Handle to running process was nullptr";
} else {
errorMessage = systemError;
}
#endif
if (runningProcess.dll == nullptr) {
MACE__THROW(NullPointer, "Internal Error: " + std::string(errorMessage));
}
runningProcess.created = true;
os::checkError(__LINE__, __FILE__, "Error retrieving current running process as dynamic library: " + std::string(errorMessage));
return runningProcess;
}
static QString getLibVersion( const QString &libraries )
{
QStringList libs = libraries.split( "|" );
QString resultFound, resultNotFound;
Q_FOREACH( const QString &lib, libs )
{
try
{
QString ver = QString::fromStdString( DynamicLibrary( lib.toLatin1() ).getVersionStr() );
resultFound += QString( "%1 (%2)" )
.arg( lib )
.arg( ver == "missing" ? DiagnosticsDialog::tr("failed to get version info") : ver );
}
catch( const std::runtime_error &e )
{
QString tmp = QString("%1 - %2")
.arg( lib )
.arg( QString( e.what() ).contains( "missing" ) ?
DiagnosticsDialog::tr("failed to get version info") : DiagnosticsDialog::tr("library not found") );
if ( !resultNotFound.isEmpty() )
resultNotFound += "<br />";
resultNotFound += tmp;
}
}
return !resultFound.isEmpty() ? resultFound : resultNotFound;
}
QString DiagnosticsDialog::getLibVersion( const QString &lib ) const
{
try
{
QString ver = QString::fromStdString( DynamicLibrary( lib.toLatin1() ).getVersionStr() );
return QString( "%1 (%2)" )
.arg( lib )
.arg( ver == "missing" ? tr( "failed to get version info" ) : ver );
} catch( const std::runtime_error &e )
{
return QString("%1 - %2")
.arg( lib )
.arg( QString( e.what() ).contains( "missing" ) ? tr( "failed to get version info" ) : tr( "library not found" ) );
}
}
PEGASUS_NAMESPACE_BEGIN
CMPIProviderModule::CMPIProviderModule(const String & fileName)
{
PEG_METHOD_ENTER(
TRC_CMPIPROVIDERINTERFACE,
"CMPIProviderModule::CMPIProviderModule()");
String resolvedFileName;
#ifdef PEGASUS_OS_TYPE_WINDOWS
if (fileName[1] != ':')
#else
if (fileName[0]!='/')
#endif
resolvedFileName=ProviderManager::_resolvePhysicalName(fileName);
else resolvedFileName=fileName;
_library = DynamicLibrary(resolvedFileName);
PEG_METHOD_EXIT();
}
// Test reference counting
void Test4()
{
DynamicLibrary library(getLibraryFileName(VALID_LIBRARY_NAME));
PEGASUS_TEST_ASSERT(!library.isLoaded());
// Load the library
Boolean loaded = library.load();
PEGASUS_TEST_ASSERT(loaded);
PEGASUS_TEST_ASSERT(library.isLoaded());
// Load the library again
loaded = library.load();
PEGASUS_TEST_ASSERT(loaded);
PEGASUS_TEST_ASSERT(library.isLoaded());
// Unload the library
library.unload();
PEGASUS_TEST_ASSERT(library.isLoaded());
// Unload the library again
library.unload();
PEGASUS_TEST_ASSERT(!library.isLoaded());
// Load the library and then assign to a new instance
library.load();
PEGASUS_TEST_ASSERT(library.isLoaded());
library.load();
PEGASUS_TEST_ASSERT(library.isLoaded());
library = DynamicLibrary(getLibraryFileName(VALID_LIBRARY_NAME));
PEGASUS_TEST_ASSERT(!library.isLoaded());
library.load();
PEGASUS_TEST_ASSERT(library.isLoaded());
library.load();
PEGASUS_TEST_ASSERT(library.isLoaded());
// Call the destructor while the library is loaded
}
// The caller assumes the repsonsibility of making sure
// the libraryPath is correctly formatted
CIMIndicationConsumerProvider* ConsumerModule::load(
const String & consumerName,
const String & libraryPath)
{
PEG_METHOD_ENTER(TRC_LISTENER, "ConsumerModule::load");
// check whether the module is cached;
// if it's not already in memory, load it
if (!_library.isLoaded())
{
if (!FileSystem::exists(libraryPath) ||
!FileSystem::canRead(libraryPath))
{
throw Exception(
MessageLoaderParms(
"DynListener.ConsumerModule.INVALID_LIBRARY_PATH",
"The library ($0:$1) does not exist or cannot be read.",
libraryPath,
consumerName));
}
_library = DynamicLibrary(libraryPath);
}
PEG_TRACE((TRC_LISTENER,Tracer::LEVEL4,
"Loading library(consumer module): %s",
(const char*)consumerName.getCString()));
if (!_library.load())
{
throw Exception(
MessageLoaderParms(
"DynListener.ConsumerModule.CANNOT_LOAD_LIBRARY",
"Cannot load consumer library ($0:$1), load error $2",
_library.getFileName(),
consumerName,
_library.getLoadErrorMessage()));
}
PEG_TRACE((TRC_LISTENER,Tracer::LEVEL3,
"Successfully loaded library(consumer module) %s",
(const char*)consumerName.getCString()));
// locate the entry point
CIMProvider* (*createProvider)(const String&) =
(CIMProvider* (*)(const String&))
_library.getSymbol("PegasusCreateProvider");
if (!createProvider)
{
_library.unload();
throw Exception(
MessageLoaderParms(
"DynListener.ConsumerModule.ENTRY_POINT_NOT_FOUND",
"The entry point for consumer library ($0:$1) cannot be found.",
libraryPath,
consumerName));
}
// create the consumer provider
CIMProvider* providerRef = createProvider(consumerName);
if(!providerRef)
{
_library.unload();
throw Exception(
MessageLoaderParms(
"DynListener.ConsumerModule.CREATE_PROVIDER_FAILED",
"createProvider failed for consumer library ($0:$1)",
libraryPath,
consumerName));
}
// test for the appropriate interface
CIMIndicationConsumerProvider* consumerRef =
dynamic_cast<CIMIndicationConsumerProvider *>(providerRef);
if(!consumerRef)
{
_library.unload();
throw Exception(
MessageLoaderParms(
"DynListener.ConsumerModule.CONSUMER_IS_NOT_A",
"Consumer ($0:$1) is not a CIMIndicationConsumerProvider.",
libraryPath,
consumerName));
}
PEG_METHOD_EXIT();
return consumerRef;
}