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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@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"
#include "xline.h"
#include "socket.h"
#include "socketengine.h"
#include "command_parse.h"
#include "dns.h"
#include "exitcodes.h"
#include <iostream>
#ifndef _WIN32
#include <dirent.h>
#endif
#ifndef PURE_STATIC
bool ModuleManager::Load(const std::string& filename, bool defer)
{
/* Don't allow people to specify paths for modules, it doesn't work as expected */
if (filename.find('/') != std::string::npos)
return false;
char modfile[MAXBUF];
snprintf(modfile,MAXBUF,"%s/%s",ServerInstance->Config->ModPath.c_str(),filename.c_str());
if (!ServerConfig::FileExists(modfile))
{
LastModuleError = "Module file could not be found: " + filename;
ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
return false;
}
if (Modules.find(filename) != Modules.end())
{
LastModuleError = "Module " + filename + " is already loaded, cannot load a module twice!";
ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
return false;
}
Module* newmod = NULL;
DLLManager* newhandle = new DLLManager(modfile);
try
{
newmod = newhandle->CallInit();
if (newmod)
{
newmod->ModuleSourceFile = filename;
newmod->ModuleDLLManager = newhandle;
newmod->dying = false;
Modules[filename] = newmod;
std::string version = newhandle->GetVersion();
if (defer)
{
ServerInstance->Logs->Log("MODULE", DEFAULT,"New module introduced: %s (Module version %s)",
filename.c_str(), version.c_str());
}
else
{
newmod->init();
Version v = newmod->GetVersion();
ServerInstance->Logs->Log("MODULE", DEFAULT,"New module introduced: %s (Module version %s)%s",
filename.c_str(), version.c_str(), (!(v.Flags & VF_VENDOR) ? " [3rd Party]" : " [Vendor]"));
}
}
else
{
LastModuleError = "Unable to load " + filename + ": " + newhandle->LastError();
ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
delete newhandle;
return false;
}
}
catch (CoreException& modexcept)
{
// failure in module constructor
if (newmod)
{
DoSafeUnload(newmod);
ServerInstance->GlobalCulls.AddItem(newhandle);
}
else
delete newhandle;
LastModuleError = "Unable to load " + filename + ": " + modexcept.GetReason();
ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
return false;
}
this->ModCount++;
if (defer)
return true;
FOREACH_MOD(I_OnLoadModule,OnLoadModule(newmod));
/* We give every module a chance to re-prioritize when we introduce a new one,
* not just the one thats loading, as the new module could affect the preference
* of others
*/
for(int tries = 0; tries < 20; tries++)
{
prioritizationState = tries > 0 ? PRIO_STATE_LAST : PRIO_STATE_FIRST;
for (std::map<std::string, Module*>::iterator n = Modules.begin(); n != Modules.end(); ++n)
n->second->Prioritize();
if (prioritizationState == PRIO_STATE_LAST)
break;
if (tries == 19)
ServerInstance->Logs->Log("MODULE", DEFAULT, "Hook priority dependency loop detected while loading " + filename);
}
ServerInstance->BuildISupport();
return true;
}
namespace {
struct UnloadAction : public HandlerBase0<void>
{
Module* const mod;
UnloadAction(Module* m) : mod(m) {}
void Call()
{
DLLManager* dll = mod->ModuleDLLManager;
ServerInstance->Modules->DoSafeUnload(mod);
ServerInstance->GlobalCulls.Apply();
delete dll;
ServerInstance->GlobalCulls.AddItem(this);
}
};
struct ReloadAction : public HandlerBase0<void>
{
Module* const mod;
HandlerBase1<void, bool>* const callback;
ReloadAction(Module* m, HandlerBase1<void, bool>* c)
: mod(m), callback(c) {}
void Call()
{
DLLManager* dll = mod->ModuleDLLManager;
std::string name = mod->ModuleSourceFile;
ServerInstance->Modules->DoSafeUnload(mod);
ServerInstance->GlobalCulls.Apply();
delete dll;
bool rv = ServerInstance->Modules->Load(name.c_str());
if (callback)
callback->Call(rv);
ServerInstance->GlobalCulls.AddItem(this);
}
};
}
bool ModuleManager::Unload(Module* mod)
{
if (!CanUnload(mod))
return false;
ServerInstance->AtomicActions.AddAction(new UnloadAction(mod));
return true;
}
void ModuleManager::Reload(Module* mod, HandlerBase1<void, bool>* callback)
{
if (CanUnload(mod))
ServerInstance->AtomicActions.AddAction(new ReloadAction(mod, callback));
else if (callback)
callback->Call(false);
}
/* We must load the modules AFTER initializing the socket engine, now */
void ModuleManager::LoadAll()
{
ModCount = 0;
std::cout << std::endl << "Loading core commands";
fflush(stdout);
DIR* library = opendir(ServerInstance->Config->ModPath.c_str());
if (library)
{
dirent* entry = NULL;
while (0 != (entry = readdir(library)))
{
if (InspIRCd::Match(entry->d_name, "cmd_*.so", ascii_case_insensitive_map))
{
std::cout << ".";
fflush(stdout);
if (!Load(entry->d_name, true))
{
ServerInstance->Logs->Log("MODULE", DEFAULT, this->LastError());
std::cout << std::endl << "[" << con_red << "*" << con_reset << "] " << this->LastError() << std::endl << std::endl;
ServerInstance->Exit(EXIT_STATUS_MODULE);
}
}
}
closedir(library);
std::cout << std::endl;
}
ConfigTagList tags = ServerInstance->Config->ConfTags("module");
for(ConfigIter i = tags.first; i != tags.second; ++i)
{
ConfigTag* tag = i->second;
std::string name = tag->getString("name");
std::cout << "[" << con_green << "*" << con_reset << "] Loading module:\t" << con_green << name << con_reset << std::endl;
if (!this->Load(name, true))
{
ServerInstance->Logs->Log("MODULE", DEFAULT, this->LastError());
std::cout << std::endl << "[" << con_red << "*" << con_reset << "] " << this->LastError() << std::endl << std::endl;
ServerInstance->Exit(EXIT_STATUS_MODULE);
}
}
for(std::map<std::string, Module*>::iterator i = Modules.begin(); i != Modules.end(); i++)
{
Module* mod = i->second;
try
{
ServerInstance->Logs->Log("MODULE", DEBUG, "Initializing %s", i->first.c_str());
mod->init();
}
catch (CoreException& modexcept)
{
LastModuleError = "Unable to initialize " + mod->ModuleSourceFile + ": " + modexcept.GetReason();
ServerInstance->Logs->Log("MODULE", DEFAULT, LastModuleError);
std::cout << std::endl << "[" << con_red << "*" << con_reset << "] " << LastModuleError << std::endl << std::endl;
ServerInstance->Exit(EXIT_STATUS_MODULE);
}
}
/* We give every module a chance to re-prioritize when we introduce a new one,
* not just the one thats loading, as the new module could affect the preference
* of others
*/
for(int tries = 0; tries < 20; tries++)
{
prioritizationState = tries > 0 ? PRIO_STATE_LAST : PRIO_STATE_FIRST;
for (std::map<std::string, Module*>::iterator n = Modules.begin(); n != Modules.end(); ++n)
n->second->Prioritize();
if (prioritizationState == PRIO_STATE_LAST)
break;
if (tries == 19)
{
ServerInstance->Logs->Log("MODULE", DEFAULT, "Hook priority dependency loop detected");
ServerInstance->Exit(EXIT_STATUS_MODULE);
}
}
}
#endif
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