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/*
*
* (C) 2010-2025 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*/
#pragma once
#include "httpd.h"
#include <variant>
namespace RPC
{
class Block;
class Event;
class Request;
class ServiceInterface;
/** Represents possible types of RPC value. */
using Value = std::variant<Block, Anope::string, std::nullptr_t, bool, double, int64_t, uint64_t>;
/** Represents standard RPC errors from the JSON-RPC and XML-RPC specifications. */
enum Error
: int64_t
{
ERR_CUSTOM_END = -32000,
ERR_CUSTOM_START = -32099,
ERR_PARSE_ERROR = -32700,
ERR_INVALID_REQUEST = -32600,
ERR_METHOD_NOT_FOUND = -32601,
ERR_INVALID_PARAMS = -32602,
};
}
class RPC::Block
{
public:
/** Retrieves the list of RPC replies. */
inline const auto &GetReplies() const { return this->replies; }
template <typename Stringable>
inline Block &Reply(const Anope::string &key, const Stringable &value)
{
this->replies.emplace(key, Anope::ToString(value));
return *this;
}
inline Block &ReplyBlock(const Anope::string &key)
{
auto it = this->replies.emplace(key, Block());
return std::get<Block>(it.first->second);
}
inline Block &ReplyBool(const Anope::string &key, bool value)
{
this->replies.emplace(key, value);
return *this;
}
inline Block &ReplyFloat(const Anope::string &key, double value)
{
this->replies.emplace(key, value);
return *this;
}
inline Block &ReplyInt(const Anope::string &key, int64_t value)
{
this->replies.emplace(key, value);
return *this;
}
inline Block &ReplyNull(const Anope::string &key)
{
this->replies.emplace(key, nullptr);
return *this;
}
inline Block &ReplyUInt(const Anope::string &key, uint64_t value)
{
this->replies.emplace(key, value);
return *this;
}
private:
Anope::map<Value> replies;
};
class RPC::Request final
: public RPC::Block
{
private:
std::optional<std::pair<int64_t, Anope::string>> error;
public:
Anope::string name;
Anope::string id;
std::deque<Anope::string> data;
HTTPReply &reply;
Request(HTTPReply &r)
: reply(r)
{
}
inline void Error(uint64_t errcode, const Anope::string &errstr)
{
this->error.emplace(errcode, errstr);
}
inline const auto &GetError() const { return this->error; }
};
class RPC::Event
{
private:
Anope::string event;
protected:
Event(const Anope::string& e)
: event(e)
{
}
public:
virtual ~Event() = default;
const auto &GetEvent() const { return event; }
virtual bool Run(ServiceInterface *iface, HTTPClient *client, Request &request) = 0;
};
class RPC::ServiceInterface
: public Service
{
public:
ServiceInterface(Module *creator, const Anope::string &sname)
: Service(creator, "RPCServiceInterface", sname)
{
}
virtual bool Register(Event *event) = 0;
virtual bool Unregister(Event *event) = 0;
virtual void Reply(Request &request) = 0;
};
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