-/* +------------------------------------+
\r * | Inspire Internet Relay Chat Daemon |
\r * +------------------------------------+
\r *
\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team
\r * See: http://www.inspircd.org/wiki/index.php/Credits
\r *
\r * This program is free but copyrighted software; see
\r * the file COPYING for details.
\r *
\r * ---------------------------------------------------
\r */
\r\r#include "inspircd.h"
\r#include "configreader.h"
\r#include "dynamic.h"
\r#ifndef WIN32
\r#include <dlfcn.h>
\r#endif
\r\rDLLManager::DLLManager(InspIRCd* ServerInstance, const char *fname)
\r{
\r err = NULL;
\r\r if (!strstr(fname,".so"))
\r {
\r err = "This doesn't look like a module file to me...";
\r return;
\r }
\r\r h = dlopen(fname, RTLD_NOW|RTLD_LOCAL);
\r if (!h)
\r {
\r err = (char*)dlerror();
\r return;
\r }
\r}
\r\rDLLManager::~DLLManager()
\r{
\r // close the library if it isn't null
\r if (h)
\r dlclose(h);
\r}
\r\r\r\rbool DLLManager::GetSymbol(void** v, const char* sym_name)
\r{
\r // try extract a symbol from the library
\r // get any error message is there is any
\r \r if (h)
\r {
\r dlerror(); // clear value
\r *v = dlsym(h, sym_name);
\r err = (char*)dlerror();
\r if (!*v || err)
\r return false;
\r }
\r \r if (err)
\r {
\r return false;
\r }
\r else
\r {
\r return true;
\r }
\r}
\r\rDLLFactoryBase::DLLFactoryBase(InspIRCd* Instance, const char* fname, const char* symbol) : DLLManager(Instance, fname)
\r{
\r // try get the factory function if there is no error yet
\r factory_func = 0;
\r \r if (!LastError())
\r {
\r if (!GetSymbol( (void **)&factory_func, symbol ? symbol : "init_module"))
\r {
\r throw ModuleException("Missing init_module() entrypoint!");
\r }
\r }
\r}
\r\rDLLFactoryBase::~DLLFactoryBase()
\r{
\r}
\r\r\ No newline at end of file
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ * Copyright (C) 2020 Matt Schatz <genius3000@g3k.solutions>
+ * Copyright (C) 2017-2020 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2014 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2012 ChrisTX <xpipe@hotmail.de>
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2003, 2006, 2010 Craig Edwards <brain@inspircd.org>
+ *
+ * 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"
+#ifndef _WIN32
+# include <dlfcn.h>
+#endif
+
+/** The extension that dynamic libraries end with. */
+#define DLL_EXTENSION ".so"
+
+DLLManager::DLLManager(const std::string& name)
+ : lib(NULL)
+ , libname(name)
+{
+ static size_t extlen = strlen(DLL_EXTENSION);
+ if (name.length() <= extlen || name.compare(name.length() - extlen, name.length(), DLL_EXTENSION))
+ {
+ err.assign(name + " is not a module (no " DLL_EXTENSION " extension)");
+ return;
+ }
+
+#ifdef _WIN32
+ lib = LoadLibraryA(name.c_str());
+#else
+ lib = dlopen(name.c_str(), RTLD_NOW|RTLD_LOCAL);
+#endif
+
+ if (!lib)
+ RetrieveLastError();
+}
+
+DLLManager::~DLLManager()
+{
+ if (!lib)
+ return;
+
+#ifdef _WIN32
+ FreeLibrary(lib);
+#else
+ dlclose(lib);
+#endif
+}
+
+Module* DLLManager::CallInit()
+{
+ if (!lib)
+ return NULL;
+
+ const unsigned long* abi = GetSymbol<const unsigned long>(MODULE_STR_ABI);
+ if (!abi)
+ {
+ err.assign(libname + " is not a module (no ABI symbol)");
+ return NULL;
+ }
+ else if (*abi != MODULE_ABI)
+ {
+ const char* version = GetVersion();
+ err.assign(InspIRCd::Format("%s was built against %s (%lu) which is too %s to use with %s (%lu).",
+ libname.c_str(), version ? version : "an unknown version", *abi,
+ *abi < MODULE_ABI ? "old" : "new", INSPIRCD_VERSION, MODULE_ABI));
+ return NULL;
+ }
+
+ union
+ {
+ void* vptr;
+ Module* (*fptr)();
+ };
+
+ vptr = GetSymbol(MODULE_STR_INIT);
+ if (!vptr)
+ {
+ err.assign(libname + " is not a module (no init symbol)");
+ return NULL;
+ }
+
+ return (*fptr)();
+}
+
+void* DLLManager::GetSymbol(const char* name) const
+{
+ if (!lib)
+ return NULL;
+
+#if defined _WIN32
+ return GetProcAddress(lib, name);
+#else
+ return dlsym(lib, name);
+#endif
+}
+
+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);
+}
projects / user / henk / code / inspircd.git / blobdiff