/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2020 Matt Schatz <genius3000@g3k.solutions>
* Copyright (C) 2019 nia <nia@netbsd.org>
* Copyright (C) 2019 iwalkalone <iwalkalone69@gmail.com>
* Copyright (C) 2013, 2017-2020 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
* Copyright (C) 2013 Adam <Adam@anope.org>
* Copyright (C) 2012-2016, 2018 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012 Robby <robby@chatbelgie.be>
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
* Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
* Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Oliver Lupton <om@inspircd.org>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 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"
#include "exitcodes.h"
#include <iostream>
static insp::intrusive_list<dynamic_reference_base>* dynrefs = NULL;
void dynamic_reference_base::reset_all()
{
if (!dynrefs)
return;
for (insp::intrusive_list<dynamic_reference_base>::iterator i = dynrefs->begin(); i != dynrefs->end(); ++i)
(*i)->resolve();
}
// Version is a simple class for holding a modules version number
Version::Version(const std::string &desc, int flags) : description(desc), Flags(flags)
{
}
Version::Version(const std::string &desc, int flags, const std::string& linkdata)
: description(desc), Flags(flags), link_data(linkdata)
{
}
// These declarations define the behavours of the base class Module (which does nothing at all)
Module::Module()
: ModuleDLLManager(NULL)
, dying(false)
{
}
CullResult Module::cull()
{
if (ModuleDLLManager)
ServerInstance->GlobalCulls.AddItem(ModuleDLLManager);
return classbase::cull();
}
Module::~Module()
{
}
void Module::DetachEvent(Implementation i)
{
ServerInstance->Modules->Detach(i, this);
}
void Module::ReadConfig(ConfigStatus& status) { }
ModResult Module::OnSendSnotice(char &snomask, std::string &type, const std::string &message) { DetachEvent(I_OnSendSnotice); return MOD_RES_PASSTHRU; }
void Module::OnUserConnect(LocalUser*) { DetachEvent(I_OnUserConnect); }
ModResult Module::OnUserPreQuit(LocalUser*, std::string&, std::string&) { DetachEvent(I_OnUserPreQuit); return MOD_RES_PASSTHRU; }
void Module::OnUserQuit(User*, const std::string&, const std::string&) { DetachEvent(I_OnUserQuit); }
void Module::OnUserDisconnect(LocalUser*) { DetachEvent(I_OnUserDisconnect); }
void Module::OnUserJoin(Membership*, bool, bool, CUList&) { DetachEvent(I_OnUserJoin); }
void Module::OnPostJoin(Membership*) { DetachEvent(I_OnPostJoin); }
void Module::OnUserPart(Membership*, std::string&, CUList&) { DetachEvent(I_OnUserPart); }
void Module::OnPreRehash(User*, const std::string&) { DetachEvent(I_OnPreRehash); }
void Module::OnModuleRehash(User*, const std::string&) { DetachEvent(I_OnModuleRehash); }
ModResult Module::OnUserPreJoin(LocalUser*, Channel*, const std::string&, std::string&, const std::string&) { DetachEvent(I_OnUserPreJoin); return MOD_RES_PASSTHRU; }
void Module::OnMode(User*, User*, Channel*, const Modes::ChangeList&, ModeParser::ModeProcessFlag) { DetachEvent(I_OnMode); }
void Module::OnOper(User*, const std::string&) { DetachEvent(I_OnOper); }
void Module::OnPostOper(User*, const std::string&, const std::string &) { DetachEvent(I_OnPostOper); }
void Module::OnPostDeoper(User*) { DetachEvent(I_OnPostDeoper); }
ModResult Module::OnUserPreInvite(User*, User*, Channel*, time_t) { DetachEvent(I_OnUserPreInvite); return MOD_RES_PASSTHRU; }
ModResult Module::OnUserPreMessage(User*, const MessageTarget&, MessageDetails&) { DetachEvent(I_OnUserPreMessage); return MOD_RES_PASSTHRU; }
ModResult Module::OnUserPreNick(LocalUser*, const std::string&) { DetachEvent(I_OnUserPreNick); return MOD_RES_PASSTHRU; }
void Module::OnUserPostNick(User*, const std::string&) { DetachEvent(I_OnUserPostNick); }
ModResult Module::OnPreMode(User*, User*, Channel*, Modes::ChangeList&) { DetachEvent(I_OnPreMode); return MOD_RES_PASSTHRU; }
void Module::On005Numeric(std::map<std::string, std::string>&) { DetachEvent(I_On005Numeric); }
ModResult Module::OnKill(User*, User*, const std::string&) { DetachEvent(I_OnKill); return MOD_RES_PASSTHRU; }
void Module::OnLoadModule(Module*) { DetachEvent(I_OnLoadModule); }
void Module::OnUnloadModule(Module*) { DetachEvent(I_OnUnloadModule); }
void Module::OnBackgroundTimer(time_t) { DetachEvent(I_OnBackgroundTimer); }
ModResult Module::OnPreCommand(std::string&, CommandBase::Params&, LocalUser*, bool) { DetachEvent(I_OnPreCommand); return MOD_RES_PASSTHRU; }
void Module::OnPostCommand(Command*, const CommandBase::Params&, LocalUser*, CmdResult, bool) { DetachEvent(I_OnPostCommand); }
void Module::OnCommandBlocked(const std::string&, const CommandBase::Params&, LocalUser*) { DetachEvent(I_OnCommandBlocked); }
void Module::OnUserInit(LocalUser*) { DetachEvent(I_OnUserInit); }
void Module::OnUserPostInit(LocalUser*) { DetachEvent(I_OnUserPostInit); }
ModResult Module::OnCheckReady(LocalUser*) { DetachEvent(I_OnCheckReady); return MOD_RES_PASSTHRU; }
ModResult Module::OnUserRegister(LocalUser*) { DetachEvent(I_OnUserRegister); return MOD_RES_PASSTHRU; }
ModResult Module::OnUserPreKick(User*, Membership*, const std::string&) { DetachEvent(I_OnUserPreKick); return MOD_RES_PASSTHRU; }
void Module::OnUserKick(User*, Membership*, const std::string&, CUList&) { DetachEvent(I_OnUserKick); }
ModResult Module::OnRawMode(User*, Channel*, ModeHandler*, const std::string&, bool) { DetachEvent(I_OnRawMode); return MOD_RES_PASSTHRU; }
ModResult Module::OnCheckInvite(User*, Channel*) { DetachEvent(I_OnCheckInvite); return MOD_RES_PASSTHRU; }
ModResult Module::OnCheckKey(User*, Channel*, const std::string&) { DetachEvent(I_OnCheckKey); return MOD_RES_PASSTHRU; }
ModResult Module::OnCheckLimit(User*, Channel*) { DetachEvent(I_OnCheckLimit); return MOD_RES_PASSTHRU; }
ModResult Module::OnCheckChannelBan(User*, Channel*) { DetachEvent(I_OnCheckChannelBan); return MOD_RES_PASSTHRU; }
ModResult Module::OnCheckBan(User*, Channel*, const std::string&) { DetachEvent(I_OnCheckBan); return MOD_RES_PASSTHRU; }
ModResult Module::OnExtBanCheck(User*, Channel*, char) { DetachEvent(I_OnExtBanCheck); return MOD_RES_PASSTHRU; }
ModResult Module::OnPreChangeHost(LocalUser*, const std::string&) { DetachEvent(I_OnPreChangeHost); return MOD_RES_PASSTHRU; }
ModResult Module::OnPreChangeRealName(LocalUser*, const std::string&) { DetachEvent(I_OnPreChangeRealName); return MOD_RES_PASSTHRU; }
ModResult Module::OnPreTopicChange(User*, Channel*, const std::string&) { DetachEvent(I_OnPreTopicChange); return MOD_RES_PASSTHRU; }
ModResult Module::OnPassCompare(Extensible* ex, const std::string &password, const std::string &input, const std::string& hashtype) { DetachEvent(I_OnPassCompare); return MOD_RES_PASSTHRU; }
void Module::OnPostConnect(User*) { DetachEvent(I_OnPostConnect); }
void Module::OnUserPostMessage(User*, const MessageTarget&, const MessageDetails&) { DetachEvent(I_OnUserPostMessage); }
void Module::OnUserMessageBlocked(User*, const MessageTarget&, const MessageDetails&) { DetachEvent(I_OnUserMessageBlocked); }
void Module::OnUserInvite(User*, User*, Channel*, time_t, unsigned int, CUList&) { DetachEvent(I_OnUserInvite); }
void Module::OnPostTopicChange(User*, Channel*, const std::string&) { DetachEvent(I_OnPostTopicChange); }
void Module::OnDecodeMetaData(Extensible*, const std::string&, const std::string&) { DetachEvent(I_OnDecodeMetaData); }
void Module::OnChangeHost(User*, const std::string&) { DetachEvent(I_OnChangeHost); }
void Module::OnChangeRealName(User*, const std::string&) { DetachEvent(I_OnChangeRealName); }
void Module::OnChangeIdent(User*, const std::string&) { DetachEvent(I_OnChangeIdent); }
void Module::OnAddLine(User*, XLine*) { DetachEvent(I_OnAddLine); }
void Module::OnDelLine(User*, XLine*) { DetachEvent(I_OnDelLine); }
void Module::OnExpireLine(XLine*) { DetachEvent(I_OnExpireLine); }
void Module::OnCleanup(ExtensionItem::ExtensibleType, Extensible*) { }
ModResult Module::OnChannelPreDelete(Channel*) { DetachEvent(I_OnChannelPreDelete); return MOD_RES_PASSTHRU; }
void Module::OnChannelDelete(Channel*) { DetachEvent(I_OnChannelDelete); }
void Module::OnBuildNeighborList(User*, IncludeChanList&, std::map<User*,bool>&) { DetachEvent(I_OnBuildNeighborList); }
void Module::OnGarbageCollect() { DetachEvent(I_OnGarbageCollect); }
ModResult Module::OnSetConnectClass(LocalUser* user, ConnectClass* myclass) { DetachEvent(I_OnSetConnectClass); return MOD_RES_PASSTHRU; }
void Module::OnUserMessage(User*, const MessageTarget&, const MessageDetails&) { DetachEvent(I_OnUserMessage); }
ModResult Module::OnNumeric(User*, const Numeric::Numeric&) { DetachEvent(I_OnNumeric); return MOD_RES_PASSTHRU; }
ModResult Module::OnAcceptConnection(int, ListenSocket*, irc::sockets::sockaddrs*, irc::sockets::sockaddrs*) { DetachEvent(I_OnAcceptConnection); return MOD_RES_PASSTHRU; }
void Module::OnSetUserIP(LocalUser*) { DetachEvent(I_OnSetUserIP); }
void Module::OnServiceAdd(ServiceProvider&) { DetachEvent(I_OnServiceAdd); }
void Module::OnServiceDel(ServiceProvider&) { DetachEvent(I_OnServiceDel); }
ModResult Module::OnUserWrite(LocalUser*, ClientProtocol::Message&) { DetachEvent(I_OnUserWrite); return MOD_RES_PASSTHRU; }
ModResult Module::OnConnectionFail(LocalUser*, BufferedSocketError) { DetachEvent(I_OnConnectionFail); return MOD_RES_PASSTHRU; }
void Module::OnShutdown(const std::string& reason) { DetachEvent(I_OnShutdown); }
ServiceProvider::ServiceProvider(Module* Creator, const std::string& Name, ServiceType Type)
: creator(Creator), name(Name), service(Type)
{
if ((ServerInstance) && (ServerInstance->Modules->NewServices))
ServerInstance->Modules->NewServices->push_back(this);
}
void ServiceProvider::DisableAutoRegister()
{
if ((ServerInstance) && (ServerInstance->Modules->NewServices))
stdalgo::erase(*ServerInstance->Modules->NewServices, this);
}
ModuleManager::ModuleManager()
{
}
ModuleManager::~ModuleManager()
{
}
bool ModuleManager::Attach(Implementation i, Module* mod)
{
if (stdalgo::isin(EventHandlers[i], mod))
return false;
EventHandlers[i].push_back(mod);
return true;
}
bool ModuleManager::Detach(Implementation i, Module* mod)
{
return stdalgo::erase(EventHandlers[i], mod);
}
void ModuleManager::Attach(Implementation* i, Module* mod, size_t sz)
{
for (size_t n = 0; n < sz; ++n)
Attach(i[n], mod);
}
void ModuleManager::AttachAll(Module* mod)
{
for (size_t i = 0; i != I_END; ++i)
Attach((Implementation)i, mod);
}
void ModuleManager::DetachAll(Module* mod)
{
for (size_t n = 0; n != I_END; ++n)
Detach((Implementation)n, mod);
}
void ModuleManager::SetPriority(Module* mod, Priority s)
{
for (size_t n = 0; n != I_END; ++n)
SetPriority(mod, (Implementation)n, s);
}
bool ModuleManager::SetPriority(Module* mod, Implementation i, Priority s, Module* which)
{
/** To change the priority of a module, we first find its position in the vector,
* then we find the position of the other modules in the vector that this module
* wants to be before/after. We pick off either the first or last of these depending
* on which they want, and we make sure our module is *at least* before or after
* the first or last of this subset, depending again on the type of priority.
*/
size_t my_pos = 0;
/* Locate our module. This is O(n) but it only occurs on module load so we're
* not too bothered about it
*/
for (size_t x = 0; x != EventHandlers[i].size(); ++x)
{
if (EventHandlers[i][x] == mod)
{
my_pos = x;
goto found_src;
}
}
/* Eh? this module doesnt exist, probably trying to set priority on an event
* they're not attached to.
*/
return false;
found_src:
// The modules registered for a hook are called in reverse order (to allow for easier removal
// of list entries while looping), meaning that the Priority given to us has the exact opposite effect
// on the list, e.g.: PRIORITY_BEFORE will actually put 'mod' after 'which', etc.
size_t swap_pos = my_pos;
switch (s)
{
case PRIORITY_LAST:
if (prioritizationState != PRIO_STATE_FIRST)
return true;
else
swap_pos = 0;
break;
case PRIORITY_FIRST:
if (prioritizationState != PRIO_STATE_FIRST)
return true;
else
swap_pos = EventHandlers[i].size() - 1;
break;
case PRIORITY_BEFORE:
{
/* Find the latest possible position, only searching AFTER our position */
for (size_t x = EventHandlers[i].size() - 1; x > my_pos; --x)
{
if (EventHandlers[i][x] == which)
{
swap_pos = x;
goto swap_now;
}
}
// didn't find it - either not loaded or we're already after
return true;
}
/* Place this module before a set of other modules */
case PRIORITY_AFTER:
{
for (size_t x = 0; x < my_pos; ++x)
{
if (EventHandlers[i][x] == which)
{
swap_pos = x;
goto swap_now;
}
}
// didn't find it - either not loaded or we're already before
return true;
}
}
swap_now:
/* Do we need to swap? */
if (swap_pos != my_pos)
{
// We are going to change positions; we'll need to run again to verify all requirements
if (prioritizationState == PRIO_STATE_LAST)
prioritizationState = PRIO_STATE_AGAIN;
/* Suggestion from Phoenix, "shuffle" the modules to better retain call order */
int incrmnt = 1;
if (my_pos > swap_pos)
incrmnt = -1;
for (unsigned int j = my_pos; j != swap_pos; j += incrmnt)
{
if ((j + incrmnt > EventHandlers[i].size() - 1) || ((incrmnt == -1) && (j == 0)))
continue;
std::swap(EventHandlers[i][j], EventHandlers[i][j+incrmnt]);
}
}
return true;
}
bool ModuleManager::PrioritizeHooks()
{
/* We give every module a chance to re-prioritize when we introduce a new one,
* not just the one that's 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", LOG_DEFAULT, "Hook priority dependency loop detected");
return false;
}
}
return true;
}
bool ModuleManager::CanUnload(Module* mod)
{
std::map<std::string, Module*>::iterator modfind = Modules.find(mod->ModuleSourceFile);
if ((modfind == Modules.end()) || (modfind->second != mod) || (mod->dying))
{
LastModuleError = "Module " + mod->ModuleSourceFile + " is not loaded, cannot unload it!";
ServerInstance->Logs->Log("MODULE", LOG_DEFAULT, LastModuleError);
return false;
}
mod->dying = true;
return true;
}
void ModuleManager::UnregisterModes(Module* mod, ModeType modetype)
{
const ModeParser::ModeHandlerMap& modes = ServerInstance->Modes.GetModes(modetype);
for (ModeParser::ModeHandlerMap::const_iterator i = modes.begin(); i != modes.end(); )
{
ModeHandler* const mh = i->second;
++i;
if (mh->creator == mod)
this->DelService(*mh);
}
}
void ModuleManager::DoSafeUnload(Module* mod)
{
// First, notify all modules that a module is about to be unloaded, so in case
// they pass execution to the soon to be unloaded module, it will happen now,
// i.e. before we unregister the services of the module being unloaded
FOREACH_MOD(OnUnloadModule, (mod));
std::map<std::string, Module*>::iterator modfind = Modules.find(mod->ModuleSourceFile);
// Unregister modes before extensions because modes may require their extension to show the mode being unset
UnregisterModes(mod, MODETYPE_USER);
UnregisterModes(mod, MODETYPE_CHANNEL);
std::vector<reference<ExtensionItem> > items;
ServerInstance->Extensions.BeginUnregister(modfind->second, items);
/* Give the module a chance to tidy out all its metadata */
const chan_hash& chans = ServerInstance->GetChans();
for (chan_hash::const_iterator c = chans.begin(); c != chans.end(); )
{
Channel* chan = c->second;
++c;
mod->OnCleanup(ExtensionItem::EXT_CHANNEL, chan);
chan->doUnhookExtensions(items);
const Channel::MemberMap& users = chan->GetUsers();
for (Channel::MemberMap::const_iterator mi = users.begin(); mi != users.end(); ++mi)
{
mod->OnCleanup(ExtensionItem::EXT_MEMBERSHIP, mi->second);
mi->second->doUnhookExtensions(items);
}
}
const user_hash& users = ServerInstance->Users->GetUsers();
for (user_hash::const_iterator u = users.begin(); u != users.end(); )
{
User* user = u->second;
// The module may quit the user (e.g. TLS (SSL) mod unloading) and that will remove it from the container
++u;
mod->OnCleanup(ExtensionItem::EXT_USER, user);
user->doUnhookExtensions(items);
}
for(std::multimap<std::string, ServiceProvider*>::iterator i = DataProviders.begin(); i != DataProviders.end(); )
{
std::multimap<std::string, ServiceProvider*>::iterator curr = i++;
if (curr->second->creator == mod)
DataProviders.erase(curr);
}
dynamic_reference_base::reset_all();
DetachAll(mod);
Modules.erase(modfind);
ServerInstance->GlobalCulls.AddItem(mod);
ServerInstance->Logs->Log("MODULE", LOG_DEFAULT, "Module %s unloaded",mod->ModuleSourceFile.c_str());
ServerInstance->ISupport.Build();
}
void ModuleManager::UnloadAll()
{
/* We do this more than once, so that any service providers get a
* chance to be unhooked by the modules using them, but then get
* a chance to be removed themsleves.
*
* Note: this deliberately does NOT delete the DLLManager objects
*/
for (int tries = 0; tries < 4; tries++)
{
std::map<std::string, Module*>::iterator i = Modules.begin();
while (i != Modules.end())
{
std::map<std::string, Module*>::iterator me = i++;
if (CanUnload(me->second))
{
DoSafeUnload(me->second);
}
}
ServerInstance->GlobalCulls.Apply();
}
}
namespace
{
struct UnloadAction : public ActionBase
{
Module* const mod;
UnloadAction(Module* m) : mod(m) {}
void Call() CXX11_OVERRIDE
{
ServerInstance->Modules->DoSafeUnload(mod);
ServerInstance->GlobalCulls.Apply();
ServerInstance->GlobalCulls.AddItem(this);
}
};
}
bool ModuleManager::Unload(Module* mod)
{
if (!CanUnload(mod))
return false;
ServerInstance->AtomicActions.AddAction(new UnloadAction(mod));
return true;
}
void ModuleManager::LoadAll()
{
std::map<std::string, ServiceList> servicemap;
LoadCoreModules(servicemap);
// Step 1: load all of the modules.
ConfigTagList tags = ServerInstance->Config->ConfTags("module");
for (ConfigIter i = tags.first; i != tags.second; ++i)
{
ConfigTag* tag = i->second;
std::string name = ExpandModName(tag->getString("name"));
this->NewServices = &servicemap[name];
// Skip modules which are already loaded.
if (Modules.find(name) != Modules.end())
continue;
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", LOG_DEFAULT, this->LastError());
std::cout << std::endl << "[" << con_red << "*" << con_reset << "] " << this->LastError() << std::endl << std::endl;
ServerInstance->Exit(EXIT_STATUS_MODULE);
}
}
// Step 2: initialize the modules and register their services.
for (ModuleMap::const_iterator i = Modules.begin(); i != Modules.end(); ++i)
{
Module* mod = i->second;
try
{
ServerInstance->Logs->Log("MODULE", LOG_DEBUG, "Initializing %s", i->first.c_str());
AttachAll(mod);
AddServices(servicemap[i->first]);
mod->init();
}
catch (CoreException& modexcept)
{
LastModuleError = "Unable to initialize " + mod->ModuleSourceFile + ": " + modexcept.GetReason();
ServerInstance->Logs->Log("MODULE", LOG_DEFAULT, LastModuleError);
std::cout << std::endl << "[" << con_red << "*" << con_reset << "] " << LastModuleError << std::endl << std::endl;
ServerInstance->Exit(EXIT_STATUS_MODULE);
}
}
this->NewServices = NULL;
ConfigStatus confstatus(NULL, true);
// Step 3: Read the configuration for the modules. This must be done as part of
// its own step so that services provided by modules can be registered before
// the configuration is read.
for (ModuleMap::const_iterator i = Modules.begin(); i != Modules.end(); ++i)
{
Module* mod = i->second;
try
{
ServerInstance->Logs->Log("MODULE", LOG_DEBUG, "Reading configuration for %s", i->first.c_str());
mod->ReadConfig(confstatus);
}
catch (CoreException& modexcept)
{
LastModuleError = "Unable to read the configuration for " + mod->ModuleSourceFile + ": " + modexcept.GetReason();
ServerInstance->Logs->Log("MODULE", LOG_DEFAULT, LastModuleError);
std::cout << std::endl << "[" << con_red << "*" << con_reset << "] " << LastModuleError << std::endl << std::endl;
ServerInstance->Exit(EXIT_STATUS_CONFIG);
}
}
if (!PrioritizeHooks())
ServerInstance->Exit(EXIT_STATUS_MODULE);
}
std::string& ModuleManager::LastError()
{
return LastModuleError;
}
void ModuleManager::AddServices(const ServiceList& list)
{
for (ServiceList::const_iterator i = list.begin(); i != list.end(); ++i)
{
ServiceProvider& s = **i;
AddService(s);
}
}
void ModuleManager::AddService(ServiceProvider& item)
{
switch (item.service)
{
case SERVICE_DATA:
case SERVICE_IOHOOK:
{
if ((!item.name.compare(0, 5, "mode/", 5)) || (!item.name.compare(0, 6, "umode/", 6)))
throw ModuleException("The \"mode/\" and the \"umode\" service name prefixes are reserved.");
DataProviders.insert(std::make_pair(item.name, &item));
std::string::size_type slash = item.name.find('/');
if (slash != std::string::npos)
{
DataProviders.insert(std::make_pair(item.name.substr(0, slash), &item));
DataProviders.insert(std::make_pair(item.name.substr(slash + 1), &item));
}
dynamic_reference_base::reset_all();
break;
}
default:
item.RegisterService();
}
FOREACH_MOD(OnServiceAdd, (item));
}
void ModuleManager::DelService(ServiceProvider& item)
{
switch (item.service)
{
case SERVICE_MODE:
if (!ServerInstance->Modes->DelMode(static_cast<ModeHandler*>(&item)))
throw ModuleException("Mode "+std::string(item.name)+" does not exist.");
// Fall through
case SERVICE_DATA:
case SERVICE_IOHOOK:
{
DelReferent(&item);
return;
}
default:
throw ModuleException("Cannot delete unknown service type");
}
FOREACH_MOD(OnServiceDel, (item));
}
ServiceProvider* ModuleManager::FindService(ServiceType type, const std::string& name)
{
switch (type)
{
case SERVICE_DATA:
case SERVICE_IOHOOK:
{
std::multimap<std::string, ServiceProvider*>::iterator i = DataProviders.find(name);
if (i != DataProviders.end() && i->second->service == type)
return i->second;
return NULL;
}
// TODO implement finding of the other types
default:
throw ModuleException("Cannot find unknown service type");
}
}
std::string ModuleManager::ExpandModName(const std::string& modname)
{
std::string fullname;
if (modname.compare(0, 5, "core_") != 0 && modname.compare(0, 2, "m_") != 0)
fullname.append("m_");
fullname.append(modname);
if (modname.length() < 3 || modname.compare(modname.size() - 3, 3, ".so") != 0)
fullname.append(".so");
return fullname;
}
dynamic_reference_base::dynamic_reference_base(Module* Creator, const std::string& Name)
: name(Name), hook(NULL), value(NULL), creator(Creator)
{
if (!dynrefs)
dynrefs = new insp::intrusive_list<dynamic_reference_base>;
dynrefs->push_front(this);
// Resolve unless there is no ModuleManager (part of class InspIRCd)
if (ServerInstance)
resolve();
}
dynamic_reference_base::~dynamic_reference_base()
{
dynrefs->erase(this);
if (dynrefs->empty())
{
delete dynrefs;
dynrefs = NULL;
}
}
void dynamic_reference_base::SetProvider(const std::string& newname)
{
name = newname;
resolve();
}
void dynamic_reference_base::resolve()
{
// Because find() may return any element with a matching key in case count(key) > 1 use lower_bound()
// to ensure a dynref with the same name as another one resolves to the same object
std::multimap<std::string, ServiceProvider*>::iterator i = ServerInstance->Modules.DataProviders.lower_bound(name);
if ((i != ServerInstance->Modules.DataProviders.end()) && (i->first == this->name))
{
ServiceProvider* newvalue = i->second;
if (value != newvalue)
{
value = newvalue;
if (hook)
hook->OnCapture();
}
}
else
value = NULL;
}
Module* ModuleManager::Find(const std::string &name)
{
std::map<std::string, Module*>::const_iterator modfind = Modules.find(ExpandModName(name));
if (modfind == Modules.end())
return NULL;
else
return modfind->second;
}
void ModuleManager::AddReferent(const std::string& name, ServiceProvider* service)
{
DataProviders.insert(std::make_pair(name, service));
dynamic_reference_base::reset_all();
}
void ModuleManager::DelReferent(ServiceProvider* service)
{
for (std::multimap<std::string, ServiceProvider*>::iterator i = DataProviders.begin(); i != DataProviders.end(); )
{
ServiceProvider* curr = i->second;
if (curr == service)
DataProviders.erase(i++);
else
++i;
}
dynamic_reference_base::reset_all();
}
