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#ifndef XMPP_COMPONENT_INCLUDED
# define XMPP_COMPONENT_INCLUDED
#include <network/socket_handler.hpp>
#include <xmpp/xmpp_parser.hpp>
#include <bridge/bridge.hpp>
#include <unordered_map>
#include <memory>
#include <string>
/**
* An XMPP component, communicating with an XMPP server using the protocole
* described in XEP-0114: Jabber Component Protocol
*
* TODO: implement XEP-0225: Component Connections
*/
class XmppComponent: public SocketHandler
{
public:
explicit XmppComponent(std::shared_ptr<Poller> poller, const std::string& hostname, const std::string& secret);
~XmppComponent();
void on_connection_failed(const std::string& reason) override final;
void on_connected() override final;
void on_connection_close() override final;
void parse_in_buffer(const size_t size) override final;
/**
* Returns a unique id, to be used in the 'id' element of our iq stanzas.
*/
static std::string next_id();
/**
* Send a "close" message to all our connected peers. That message
* depends on the protocol used (this may be a QUIT irc message, or a
* <stream/>, etc). We may also directly close the connection, or we may
* wait for the remote peer to acknowledge it before closing.
*/
void shutdown();
bool is_document_open() const;
/**
* Run a check on all bridges, to remove all disconnected (socket is
* closed, or no channel is joined) IrcClients. Some kind of garbage collector.
*/
void clean();
/**
* Connect to the XMPP server.
*/
void start();
/**
* Reset the component so we can use the component on a new XMPP stream
*/
void reset();
/**
* Serialize the stanza and add it to the out_buf to be sent to the
* server.
*/
void send_stanza(const Stanza& stanza);
/**
* Handle the opening of the remote stream
*/
void on_remote_stream_open(const XmlNode& node);
/**
* Handle the closing of the remote stream
*/
void on_remote_stream_close(const XmlNode& node);
/**
* Handle received stanzas
*/
void on_stanza(const Stanza& stanza);
/**
* Send an error stanza. Message being the name of the element inside the
* stanza, and explanation being a short human-readable sentence
* describing the error.
*/
void send_stream_error(const std::string& message, const std::string& explanation);
/**
* Send error stanza, described in http://xmpp.org/rfcs/rfc6120.html#stanzas-error
*/
void send_stanza_error(const std::string& kind, const std::string& to, const std::string& from,
const std::string& id, const std::string& error_type,
const std::string& defined_condition, const std::string& text);
/**
* Send the closing signal for our document (not closing the connection though).
*/
void close_document();
/**
* Send a message from from@served_hostname, with the given body
*/
void send_message(const std::string& from, Xmpp::body&& body,
const std::string& to, const std::string& type);
/**
* Send a join from a new participant
*/
void send_user_join(const std::string& from,
const std::string& nick,
const std::string& realjid,
const std::string& affiliation,
const std::string& role,
const std::string& to,
const bool self);
/**
* Send an error to indicate that the user tried to join an invalid room
*/
void send_invalid_room_error(const std::string& muc_jid,
const std::string& nick,
const std::string& to);
/**
* Send the MUC topic to the user
*/
void send_topic(const std::string& from, Xmpp::body&& xmpp_topic, const std::string& to);
/**
* Send a (non-private) message to the MUC
*/
void send_muc_message(const std::string& muc_name, const std::string& nick, Xmpp::body&& body, const std::string& jid_to);
/**
* Send an unavailable presence for this nick
*/
void send_muc_leave(std::string&& muc_name, std::string&& nick, Xmpp::body&& message, const std::string& jid_to, const bool self);
/**
* Indicate that a participant changed his nick
*/
void send_nick_change(const std::string& muc_name,
const std::string& old_nick,
const std::string& new_nick,
const std::string& affiliation,
const std::string& role,
const std::string& jid_to,
const bool self);
/**
* An user is kicked from a room
*/
void kick_user(const std::string& muc_name,
const std::string& target,
const std::string& reason,
const std::string& author,
const std::string& jid_to);
/**
* Send a presence type=error with a conflict element
*/
void send_nickname_conflict_error(const std::string& muc_name,
const std::string& nickname,
const std::string& jid_to);
/**
* Send a generic presence error
*/
void send_presence_error(const std::string& muc_name,
const std::string& nickname,
const std::string& jid_to,
const std::string& type,
const std::string& condition,
const std::string& text);
/**
* Send a presence from the MUC indicating a change in the role and/or
* affiliation of a participant
*/
void send_affiliation_role_change(const std::string& muc_name,
const std::string& target,
const std::string& affiliation,
const std::string& role,
const std::string& jid_to);
/**
* Send a result IQ with the gateway disco informations.
*/
void send_self_disco_info(const std::string& id, const std::string& jid_to);
/**
* Send an iq version request
*/
void send_iq_version_request(const std::string& from,
const std::string& jid_to);
/**
* Handle the various stanza types
*/
void handle_handshake(const Stanza& stanza);
void handle_presence(const Stanza& stanza);
void handle_message(const Stanza& stanza);
void handle_iq(const Stanza& stanza);
void handle_error(const Stanza& stanza);
/**
* Whether or not we ever succeeded our authentication to the XMPP server
*/
bool ever_auth;
/**
* Whether or not the last connection+auth attempt was successful
*/
bool last_auth;
private:
/**
* Return the bridge associated with the given full JID. Create a new one
* if none already exist.
*/
Bridge* get_user_bridge(const std::string& user_jid);
/**
* Return a buffer provided by the XML parser, to read data directly into
* it, and avoiding some unnecessary copy.
*/
void* get_receive_buffer(const size_t size) const override final;
XmppParser parser;
std::string stream_id;
std::string served_hostname;
std::string secret;
bool authenticated;
/**
* Whether or not OUR XMPP document is open
*/
bool doc_open;
std::unordered_map<std::string, std::function<void(const Stanza&)>> stanza_handlers;
/**
* One bridge for each user of the component. Indexed by the user's full
* jid
*/
std::unordered_map<std::string, std::unique_ptr<Bridge>> bridges;
static unsigned long current_id;
XmppComponent(const XmppComponent&) = delete;
XmppComponent(XmppComponent&&) = delete;
XmppComponent& operator=(const XmppComponent&) = delete;
XmppComponent& operator=(XmppComponent&&) = delete;
};
#endif // XMPP_COMPONENT_INCLUDED
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