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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2026 Sadie Powell <sadie@witchery.services>
*
* 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"
static insp::intrusive_list<dynamic_reference_base>* dynrefs = nullptr;
dynamic_reference_base::dynamic_reference_base(const WeakModulePtr& mod, const std::string& stype, const std::string& sname, bool strict)
: service_name(sname)
, service_type(stype)
, strict_ref(strict)
, creator(mod)
{
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(const dynamic_reference_base& other)
: dynamic_reference_base(other.creator, other.service_type, other.service_name, other.strict_ref)
{
// Intentionally left blank.
}
dynamic_reference_base::~dynamic_reference_base()
{
dynrefs->erase(this);
if (dynrefs->empty())
insp::delete_zero(dynrefs);
}
void dynamic_reference_base::reset_all(const std::string& stype)
{
if (!dynrefs)
return;
for (auto* dynref : *dynrefs)
{
if (stype.empty() || dynref->service_type == stype)
dynref->resolve();
}
}
void dynamic_reference_base::resolve()
{
auto* oldvalue = this->value;
this->value = nullptr;
// 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
auto i = ServerInstance->Modules.Services.lower_bound(std::make_pair(this->service_type, this->service_name));
if (i == ServerInstance->Modules.Services.end())
return; // No service found.
const auto& [stype, sname] = i->first;
if (!insp::casemapped_equals(this->service_type, stype) || !insp::casemapped_equals(this->service_name, sname))
return; // No service found.
if (this->strict_ref && sname.empty())
return; // Can't use generic services for strict references.
this->value = i->second;
if (oldvalue != value && hook)
hook->OnCapture();
}
void dynamic_reference_base::ClearProviderName()
{
this->service_name.clear();
value = nullptr;
}
void dynamic_reference_base::SetProvider(const std::string& stype, const std::string& sname)
{
this->service_type = stype;
this->service_name = sname;
resolve();
}
void dynamic_reference_base::SetProviderName(const std::string& sname)
{
SetProvider(GetProviderType(), sname);
}
Service::Provider::Provider(const WeakModulePtr& mod, const std::string& stype, const std::string& sname)
: service_creator(mod)
, service_name(sname)
, service_type(stype)
{
if ((ServerInstance) && (ServerInstance->Modules.NewServices))
ServerInstance->Modules.NewServices->push_back(this);
}
void Service::Provider::DisableAutoRegister()
{
if ((ServerInstance) && (ServerInstance->Modules.NewServices))
std::erase(*ServerInstance->Modules.NewServices, this);
}
std::string Service::Provider::GetSource() const
{
if (insp::empty_ptr(this->service_creator))
return "the core";
const auto mod = this->service_creator.lock();
if (!mod)
return "an unknown module";
return FMT::format("the {} module", ModuleManager::ShrinkModName(mod->ModuleFile));
}
void Service::Provider::RegisterService()
{
// Intentionally left blank.
}
void Service::Provider::UnregisterService()
{
// Intentionally left blank.
}
Service::SimpleProvider::SimpleProvider(const WeakModulePtr& mod, const std::string& stype, const std::string& sname)
: Service::Provider(mod, stype, sname)
{
}
void Service::SimpleProvider::RegisterService()
{
if (!this->service_name.empty())
ServerInstance->Modules.AddReferent(this->service_type, this->service_name, this);
ServerInstance->Modules.AddReferent(this->service_type, "", this);
}
void Service::SimpleProvider::UnregisterService()
{
ServerInstance->Modules.DelReferent(this);
}
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