solib.cpp

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/**
 * @file SoLib.cpp
 * @brief Linux shared object loader implementation
 * @author Christopher Han <[e-mail]>
 *
 * Linux Shared Object loader class implementation
 * Copyright (C) 2005.  Licensed under the terms of the
 * GNU GPL, v2 or later.
 */
#include <vector>
#include "LogOutput.h"
#include "SoLib.h"
#include <dlfcn.h>

/**
 * Instantiates the loader, attempts to dlopen the
 * shared object lazily.
 */
SoLib::SoLib(const char *filename)
{
	so = dlopen(filename,RTLD_LAZY);
	if (so == NULL)
		logOutput.Print("%s:%d: SoLib::SoLib: %s", __FILE__, __LINE__, dlerror());
}

/**
 * Just dlcloses the shared object
 */
SoLib::~SoLib()
{
	if (so != NULL)
		dlclose(so);
}

/**
 * Attempts to locate the symbol address with dlsym
 */
void *SoLib::FindAddress(const char *symbol)
{
	if (so != NULL) {
		void* p = dlsym(so, symbol);
		if (p == NULL)
			logOutput.Print("%s:%d: SoLib::FindAddress: %s", __FILE__, __LINE__, dlerror());
		return p;
	}
	return NULL;
}