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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2007 Oliver Lupton <oliverlupton@gmail.com>
* Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2003, 2006 Craig Edwards <craigedwards@brainbox.cc>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "dynamic.h"
#ifndef _WIN32
#include <dlfcn.h>
#else
#define dlopen(path, state) (void*)LoadLibraryA(path)
#define dlsym(handle, export) (void*)GetProcAddress((HMODULE)handle, export)
#define dlclose(handle) FreeLibrary((HMODULE)handle)
#endif
DLLManager::DLLManager(const char *fname)
{
if (!strstr(fname,".so"))
{
err = "This doesn't look like a module file to me...";
h = NULL;
return;
}
h = dlopen(fname, RTLD_NOW|RTLD_LOCAL);
if (!h)
{
RetrieveLastError();
}
}
DLLManager::~DLLManager()
{
/* close the library */
if (h)
dlclose(h);
}
union init_t {
void* vptr;
Module* (*fptr)();
};
Module* DLLManager::CallInit()
{
if (!h)
return NULL;
init_t initfn;
initfn.vptr = dlsym(h, MODULE_INIT_STR);
if (!initfn.vptr)
{
RetrieveLastError();
return NULL;
}
return (*initfn.fptr)();
}
std::string DLLManager::GetVersion()
{
if (!h)
return "";
const char* srcver = (char*)dlsym(h, "inspircd_src_version");
if (srcver)
return srcver;
return "Unversioned module";
}
void DLLManager::RetrieveLastError()
{
#if defined _WIN32
char errmsg[500];
DWORD dwErrorCode = GetLastError();
if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dwErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPSTR)errmsg, _countof(errmsg), NULL) == 0)
sprintf_s(errmsg, _countof(errmsg), "Error code: %u", dwErrorCode);
SetLastError(ERROR_SUCCESS);
err = errmsg;
#else
const char* errmsg = dlerror();
err = errmsg ? errmsg : "Unknown error";
#endif
std::string::size_type p;
while ((p = err.find_last_of("\r\n")) != std::string::npos)
err.erase(p, 1);
}
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