671 lines
24 KiB
C++
671 lines
24 KiB
C++
#include <bridge/bridge.hpp>
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#include <bridge/colors.hpp>
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#include <bridge/list_element.hpp>
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#include <xmpp/biboumi_component.hpp>
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#include <xmpp/xmpp_stanza.hpp>
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#include <irc/irc_message.hpp>
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#include <network/poller.hpp>
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#include <utils/empty_if_fixed_server.hpp>
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#include <utils/encoding.hpp>
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#include <utils/tolower.hpp>
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#include <logger/logger.hpp>
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#include <utils/revstr.hpp>
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#include <utils/split.hpp>
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#include <xmpp/jid.hpp>
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#include <stdexcept>
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#include <iostream>
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#include <tuple>
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using namespace std::string_literals;
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static const char* action_prefix = "\01ACTION ";
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Bridge::Bridge(const std::string& user_jid, BiboumiComponent* xmpp, std::shared_ptr<Poller> poller):
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user_jid(user_jid),
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xmpp(xmpp),
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poller(poller)
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{
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}
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Bridge::~Bridge()
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{
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}
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/**
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* Return the role and affiliation, corresponding to the given irc mode */
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static std::tuple<std::string, std::string> get_role_affiliation_from_irc_mode(const char mode)
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{
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if (mode == 'a' || mode == 'q')
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return std::make_tuple("moderator", "owner");
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else if (mode == 'o')
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return std::make_tuple("moderator", "admin");
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else if (mode == 'h')
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return std::make_tuple("moderator", "member");
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else if (mode == 'v')
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return std::make_tuple("participant", "member");
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else
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return std::make_tuple("participant", "none");
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}
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void Bridge::shutdown(const std::string& exit_message)
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{
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for (auto it = this->irc_clients.begin(); it != this->irc_clients.end(); ++it)
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{
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it->second->send_quit_command(exit_message);
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it->second->leave_dummy_channel(exit_message);
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}
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}
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void Bridge::clean()
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{
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auto it = this->irc_clients.begin();
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while (it != this->irc_clients.end())
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{
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IrcClient* client = it->second.get();
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if (!client->is_connected() && !client->is_connecting())
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it = this->irc_clients.erase(it);
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else
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++it;
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}
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}
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const std::string& Bridge::get_jid() const
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{
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return this->user_jid;
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}
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Xmpp::body Bridge::make_xmpp_body(const std::string& str)
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{
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std::string res;
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if (utils::is_valid_utf8(str.c_str()))
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res = str;
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else
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res = utils::convert_to_utf8(str, "ISO-8859-1");
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return irc_format_to_xhtmlim(res);
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}
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IrcClient* Bridge::get_irc_client(const std::string& hostname, const std::string& username)
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{
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try
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{
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return this->irc_clients.at(hostname).get();
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}
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catch (const std::out_of_range& exception)
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{
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this->irc_clients.emplace(hostname, std::make_shared<IrcClient>(this->poller, hostname, username, this));
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std::shared_ptr<IrcClient> irc = this->irc_clients.at(hostname);
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return irc.get();
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}
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}
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IrcClient* Bridge::get_irc_client(const std::string& hostname)
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{
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try
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{
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return this->irc_clients.at(hostname).get();
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}
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catch (const std::out_of_range& exception)
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{
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return nullptr;
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}
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}
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bool Bridge::join_irc_channel(const Iid& iid, const std::string& username, const std::string& password)
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{
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IrcClient* irc = this->get_irc_client(iid.get_server(), username);
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if (iid.get_local().empty())
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{ // Join the dummy channel
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if (irc->is_welcomed())
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{
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if (irc->get_dummy_channel().joined)
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return false;
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// Immediately simulate a message coming from the IRC server saying that we
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// joined the channel
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const IrcMessage join_message(irc->get_nick(), "JOIN", {""});
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irc->on_channel_join(join_message);
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const IrcMessage end_join_message(std::string(iid.get_server()), "366",
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{irc->get_nick(),
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"", "End of NAMES list"});
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irc->on_channel_completely_joined(end_join_message);
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}
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else
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{
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irc->get_dummy_channel().joining = true;
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irc->start();
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}
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return true;
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}
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if (irc->is_channel_joined(iid.get_local()) == false)
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{
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irc->send_join_command(iid.get_local(), password);
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return true;
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}
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return false;
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}
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void Bridge::send_channel_message(const Iid& iid, const std::string& body)
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{
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if (iid.get_local().empty() || iid.get_server().empty())
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{
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log_warning("Cannot send message to channel: [" << iid.get_local() << "] on server [" << iid.get_server() << "]");
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return;
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}
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IrcClient* irc = this->get_irc_client(iid.get_server());
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if (!irc)
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{
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log_warning("Cannot send message: no client exist for server " << iid.get_server());
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return;
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}
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// Because an IRC message cannot contain \n, we need to convert each line
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// of text into a separate IRC message. For conveniance, we also cut the
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// message into submessages on the XMPP side, this way the user of the
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// gateway sees what was actually sent over IRC. For example if an user
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// sends “hello\n/me waves”, two messages will be generated: “hello” and
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// “/me waves”. Note that the “command” handling (messages starting with
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// /me, /mode, etc) is done for each message generated this way. In the
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// above example, the /me will be interpreted.
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std::vector<std::string> lines = utils::split(body, '\n', true);
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if (lines.empty())
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return ;
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for (const std::string& line: lines)
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{
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if (line.substr(0, 6) == "/mode ")
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{
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std::vector<std::string> args = utils::split(line.substr(6), ' ', false);
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irc->send_mode_command(iid.get_local(), args);
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continue; // We do not want to send that back to the
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// XMPP user, that’s not a textual message.
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}
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else if (line.substr(0, 4) == "/me ")
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irc->send_channel_message(iid.get_local(), action_prefix + line.substr(4) + "\01");
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else
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irc->send_channel_message(iid.get_local(), line);
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this->xmpp->send_muc_message(std::to_string(iid), irc->get_own_nick(),
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this->make_xmpp_body(line), this->user_jid);
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}
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}
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void Bridge::forward_affiliation_role_change(const Iid& iid, const std::string& nick,
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const std::string& affiliation,
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const std::string& role)
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{
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IrcClient* irc = this->get_irc_client(iid.get_server());
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if (!irc)
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return;
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IrcChannel* chan = irc->get_channel(iid.get_local());
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if (!chan || !chan->joined)
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return;
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IrcUser* user = chan->find_user(nick);
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if (!user)
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return;
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// For each affiliation or role, we have a “maximal” mode that we want to
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// set. We must remove any superior mode at the same time. For example if
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// the user already has +o mode, and we set its affiliation to member, we
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// remove the +o mode, and add +v. For each “superior” mode (for example,
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// for +v, the superior modes are 'h', 'a', 'o' and 'q') we check if that
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// user has it, and if yes we remove that mode
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std::size_t nb = 1; // the number of times the nick must be
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// repeated in the argument list
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std::string modes; // The string of modes to
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// add/remove. For example "+v-aoh"
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std::vector<char> modes_to_remove; // List of modes to check for removal
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if (affiliation == "none")
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{
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modes = "";
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nb = 0;
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modes_to_remove = {'v', 'h', 'o', 'a', 'q'};
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}
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else if (affiliation == "member")
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{
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modes = "+v";
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modes_to_remove = {'h', 'o', 'a', 'q'};
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}
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else if (role == "moderator")
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{
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modes = "+h";
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modes_to_remove = {'o', 'a', 'q'};
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}
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else if (affiliation == "admin")
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{
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modes = "+o";
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modes_to_remove = {'a', 'q'};
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}
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else if (affiliation == "owner")
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{
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modes = "+a";
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modes_to_remove = {'q'};
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}
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else
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return;
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for (const char mode: modes_to_remove)
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if (user->modes.find(mode) != user->modes.end())
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{
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modes += "-"s + mode;
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nb++;
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}
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if (modes.empty())
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return;
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std::vector<std::string> args(nb, nick);
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args.insert(args.begin(), modes);
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irc->send_mode_command(iid.get_local(), args);
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}
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void Bridge::send_private_message(const Iid& iid, const std::string& body, const std::string& type)
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{
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if (iid.get_local().empty() || iid.get_server().empty())
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return ;
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IrcClient* irc = this->get_irc_client(iid.get_server());
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if (!irc)
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{
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log_warning("Cannot send message: no client exist for server " << iid.get_server());
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return;
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}
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std::vector<std::string> lines = utils::split(body, '\n', true);
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if (lines.empty())
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return ;
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for (const std::string& line: lines)
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{
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if (line.substr(0, 4) == "/me ")
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irc->send_private_message(iid.get_local(), action_prefix + line.substr(4) + "\01", type);
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else
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irc->send_private_message(iid.get_local(), line, type);
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}
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}
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void Bridge::leave_irc_channel(Iid&& iid, std::string&& status_message)
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{
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IrcClient* irc = this->get_irc_client(iid.get_server());
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if (irc)
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irc->send_part_command(iid.get_local(), status_message);
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}
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void Bridge::send_irc_nick_change(const Iid& iid, const std::string& new_nick)
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{
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IrcClient* irc = this->get_irc_client(iid.get_server());
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if (irc)
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irc->send_nick_command(new_nick);
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}
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void Bridge::send_irc_channel_list_request(const Iid& iid, const std::string& iq_id,
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const std::string& to_jid)
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{
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IrcClient* irc = this->get_irc_client(iid.get_server());
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if (!irc)
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return;
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irc->send_list_command();
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irc_responder_callback_t cb = [this, iid, iq_id, to_jid](const std::string& irc_hostname,
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const IrcMessage& message) -> bool
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{
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static std::vector<ListElement> list;
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if (irc_hostname != iid.get_server())
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return false;
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if (message.command == "263" || message.command == "RPL_TRYAGAIN")
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{ // TODO send an error iq
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return true;
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}
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else if (message.command == "322" || message.command == "RPL_LIST")
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{ // Add element to list
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if (message.arguments.size() == 4)
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list.emplace_back(message.arguments[1], message.arguments[2],
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message.arguments[3]);
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return false;
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}
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else if (message.command == "323" || message.command == "RPL_LISTEND")
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{ // Send the iq response with the content of the list
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this->xmpp->send_iq_room_list_result(iq_id, to_jid, std::to_string(iid), list);
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return true;
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}
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return false;
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};
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this->add_waiting_irc(std::move(cb));
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}
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void Bridge::send_irc_kick(const Iid& iid, const std::string& target, const std::string& reason,
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const std::string& iq_id, const std::string& to_jid)
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{
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IrcClient* irc = this->get_irc_client(iid.get_server());
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if (!irc)
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return;
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irc->send_kick_command(iid.get_local(), target, reason);
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irc_responder_callback_t cb = [this, target, iq_id, to_jid, iid](const std::string& irc_hostname,
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const IrcMessage& message) -> bool
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{
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if (irc_hostname != iid.get_server())
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return false;
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if (message.command == "KICK" && message.arguments.size() >= 2)
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{
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const std::string target_later = message.arguments[1];
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const std::string chan_name_later = utils::tolower(message.arguments[0]);
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if (target_later != target || chan_name_later != iid.get_local())
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return false;
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this->xmpp->send_iq_result(iq_id, to_jid, std::to_string(iid));
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}
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else if (message.command == "401" && message.arguments.size() >= 2)
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{
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const std::string target_later = message.arguments[1];
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if (target_later != target)
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return false;
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std::string error_message = "No such nick";
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if (message.arguments.size() >= 3)
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error_message = message.arguments[2];
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this->xmpp->send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "cancel", "item-not-found",
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error_message, false);
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}
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else if (message.command == "482" && message.arguments.size() >= 2)
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{
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const std::string chan_name_later = utils::tolower(message.arguments[1]);
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if (chan_name_later != iid.get_local())
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return false;
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std::string error_message = "You're not channel operator";
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if (message.arguments.size() >= 3)
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error_message = message.arguments[2];
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this->xmpp->send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "cancel", "not-allowed",
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error_message, false);
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}
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return true;
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};
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this->add_waiting_irc(std::move(cb));
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}
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void Bridge::set_channel_topic(const Iid& iid, const std::string& subject)
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{
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IrcClient* irc = this->get_irc_client(iid.get_server());
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if (irc)
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irc->send_topic_command(iid.get_local(), subject);
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}
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void Bridge::send_xmpp_version_to_irc(const Iid& iid, const std::string& name, const std::string& version, const std::string& os)
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{
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std::string result(name + " " + version + " " + os);
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this->send_private_message(iid, "\01VERSION "s + result + "\01", "NOTICE");
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}
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void Bridge::send_irc_ping_result(const Iid& iid, const std::string& id)
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{
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this->send_private_message(iid, "\01PING "s + utils::revstr(id), "NOTICE");
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}
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void Bridge::send_irc_user_ping_request(const std::string& irc_hostname, const std::string& nick,
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const std::string& iq_id, const std::string& to_jid,
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const std::string& from_jid)
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{
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Iid iid(nick + "!" + irc_hostname);
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this->send_private_message(iid, "\01PING " + iq_id + "\01");
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irc_responder_callback_t cb = [this, nick, iq_id, to_jid, irc_hostname, from_jid](const std::string& hostname, const IrcMessage& message) -> bool
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{
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if (irc_hostname != hostname)
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return false;
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IrcUser user(message.prefix);
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const std::string body = message.arguments[1];
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if (message.command == "NOTICE" && user.nick == nick &&
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message.arguments.size() >= 2 && body.substr(0, 6) == "\01PING ")
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{
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const std::string id = body.substr(6, body.size() - 6);
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if (id != iq_id)
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return false;
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Jid jid(from_jid);
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this->xmpp->send_iq_result(iq_id, to_jid, jid.local);
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return true;
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}
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if (message.command == "401" && message.arguments.size() >= 2
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&& message.arguments[1] == nick)
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{
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std::string error_message = "No such nick";
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if (message.arguments.size() >= 3)
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error_message = message.arguments[2];
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this->xmpp->send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "service-unavailable",
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error_message, true);
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return true;
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}
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return false;
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};
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this->add_waiting_irc(std::move(cb));
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}
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void Bridge::send_irc_participant_ping_request(const Iid& iid, const std::string& nick,
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const std::string& iq_id, const std::string& to_jid,
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const std::string& from_jid)
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{
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IrcClient* irc = this->get_irc_client(iid.get_server());
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if (!irc)
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{
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this->xmpp->send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "item-not-found",
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"Not connected to IRC server"s + iid.get_server(), true);
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return;
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}
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IrcChannel* chan = irc->get_channel(iid.get_local());
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if (!chan->joined)
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{
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this->xmpp->send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "not-allowed",
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"", true);
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return;
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}
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if (chan->get_self()->nick != nick && !chan->find_user(nick))
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{
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this->xmpp->send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "item-not-found",
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"Recipient not in room", true);
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return;
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}
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// The user is in the room, send it a direct PING
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this->send_irc_user_ping_request(iid.get_server(), nick, iq_id, to_jid, from_jid);
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}
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void Bridge::on_gateway_ping(const std::string& irc_hostname, const std::string& iq_id, const std::string& to_jid,
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const std::string& from_jid)
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||
{
|
||
Jid jid(from_jid);
|
||
if (irc_hostname.empty() || this->get_irc_client(irc_hostname))
|
||
this->xmpp->send_iq_result(iq_id, to_jid, jid.local);
|
||
else
|
||
this->xmpp->send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "service-unavailable",
|
||
"", true);
|
||
}
|
||
|
||
void Bridge::send_irc_version_request(const std::string& irc_hostname, const std::string& target,
|
||
const std::string& iq_id, const std::string& to_jid,
|
||
const std::string& from_jid)
|
||
{
|
||
Iid iid(target + "!" + irc_hostname);
|
||
this->send_private_message(iid, "\01VERSION\01");
|
||
// TODO, add a timer to remove that waiting iq if the server does not
|
||
// respond with a matching command before n seconds
|
||
irc_responder_callback_t cb = [this, target, iq_id, to_jid, irc_hostname, from_jid](const std::string& hostname, const IrcMessage& message) -> bool
|
||
{
|
||
if (irc_hostname != hostname)
|
||
return false;
|
||
IrcUser user(message.prefix);
|
||
if (message.command == "NOTICE" && user.nick == target &&
|
||
message.arguments.size() >= 2 && message.arguments[1].substr(0, 9) == "\01VERSION ")
|
||
{
|
||
// remove the "\01VERSION " and the "\01" parts from the string
|
||
const std::string version = message.arguments[1].substr(9, message.arguments[1].size() - 10);
|
||
this->xmpp->send_version(iq_id, to_jid, from_jid, version);
|
||
return true;
|
||
}
|
||
if (message.command == "401" && message.arguments.size() >= 2
|
||
&& message.arguments[1] == target)
|
||
{
|
||
std::string error_message = "No such nick";
|
||
if (message.arguments.size() >= 3)
|
||
error_message = message.arguments[2];
|
||
this->xmpp->send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "item-not-found",
|
||
error_message, true);
|
||
return true;
|
||
}
|
||
return false;
|
||
};
|
||
this->add_waiting_irc(std::move(cb));
|
||
}
|
||
|
||
void Bridge::send_message(const Iid& iid, const std::string& nick, const std::string& body, const bool muc)
|
||
{
|
||
if (muc)
|
||
this->xmpp->send_muc_message(std::to_string(iid), nick,
|
||
this->make_xmpp_body(body), this->user_jid);
|
||
else
|
||
{
|
||
std::string target = std::to_string(iid);
|
||
bool fulljid = false;
|
||
auto it = this->preferred_user_from.find(iid.get_local());
|
||
if (it != this->preferred_user_from.end())
|
||
{
|
||
target = it->second;
|
||
fulljid = true;
|
||
}
|
||
this->xmpp->send_message(target, this->make_xmpp_body(body),
|
||
this->user_jid, "chat", fulljid);
|
||
}
|
||
}
|
||
|
||
void Bridge::send_presence_error(const Iid& iid, const std::string& nick,
|
||
const std::string& type, const std::string& condition,
|
||
const std::string& error_code, const std::string& text)
|
||
{
|
||
this->xmpp->send_presence_error(std::to_string(iid), nick, this->user_jid, type, condition, error_code, text);
|
||
}
|
||
|
||
void Bridge::send_muc_leave(Iid&& iid, std::string&& nick, const std::string& message, const bool self)
|
||
{
|
||
this->xmpp->send_muc_leave(std::to_string(iid), std::move(nick), this->make_xmpp_body(message), this->user_jid, self);
|
||
IrcClient* irc = this->get_irc_client(iid.get_server());
|
||
if (irc && irc->number_of_joined_channels() == 0)
|
||
irc->send_quit_command("");
|
||
}
|
||
|
||
void Bridge::send_nick_change(Iid&& iid,
|
||
const std::string& old_nick,
|
||
const std::string& new_nick,
|
||
const char user_mode,
|
||
const bool self)
|
||
{
|
||
std::string affiliation;
|
||
std::string role;
|
||
std::tie(role, affiliation) = get_role_affiliation_from_irc_mode(user_mode);
|
||
|
||
this->xmpp->send_nick_change(std::to_string(iid),
|
||
old_nick, new_nick, affiliation, role, this->user_jid, self);
|
||
}
|
||
|
||
void Bridge::send_xmpp_message(const std::string& from, const std::string& author, const std::string& msg)
|
||
{
|
||
std::string body;
|
||
if (!author.empty())
|
||
{
|
||
IrcUser user(author);
|
||
body = "\u000303"s + user.nick + (user.host.empty()?
|
||
"\u0003: ":
|
||
(" (\u000310" + user.host + "\u000303)\u0003: ")) + msg;
|
||
}
|
||
else
|
||
body = msg;
|
||
this->xmpp->send_message(from, this->make_xmpp_body(body), this->user_jid, "chat");
|
||
}
|
||
|
||
void Bridge::send_user_join(const std::string& hostname,
|
||
const std::string& chan_name,
|
||
const IrcUser* user,
|
||
const char user_mode,
|
||
const bool self)
|
||
{
|
||
std::string affiliation;
|
||
std::string role;
|
||
std::tie(role, affiliation) = get_role_affiliation_from_irc_mode(user_mode);
|
||
|
||
this->xmpp->send_user_join(chan_name + utils::empty_if_fixed_server("%" + hostname), user->nick, user->host,
|
||
affiliation, role, this->user_jid, self);
|
||
}
|
||
|
||
void Bridge::send_topic(const std::string& hostname, const std::string& chan_name, const std::string& topic)
|
||
{
|
||
this->xmpp->send_topic(chan_name + utils::empty_if_fixed_server("%" + hostname), this->make_xmpp_body(topic), this->user_jid);
|
||
}
|
||
|
||
std::string Bridge::get_own_nick(const Iid& iid)
|
||
{
|
||
IrcClient* irc = this->get_irc_client(iid.get_server());
|
||
if (irc)
|
||
return irc->get_own_nick();
|
||
return "";
|
||
}
|
||
|
||
size_t Bridge::active_clients() const
|
||
{
|
||
return this->irc_clients.size();
|
||
}
|
||
|
||
void Bridge::kick_muc_user(Iid&& iid, const std::string& target, const std::string& reason, const std::string& author)
|
||
{
|
||
this->xmpp->kick_user(std::to_string(iid), target, reason, author, this->user_jid);
|
||
}
|
||
|
||
void Bridge::send_nickname_conflict_error(const Iid& iid, const std::string& nickname)
|
||
{
|
||
this->xmpp->send_presence_error(std::to_string(iid), nickname, this->user_jid, "cancel", "conflict", "409", "");
|
||
}
|
||
|
||
void Bridge::send_affiliation_role_change(const Iid& iid, const std::string& target, const char mode)
|
||
{
|
||
std::string role;
|
||
std::string affiliation;
|
||
|
||
std::tie(role, affiliation) = get_role_affiliation_from_irc_mode(mode);
|
||
this->xmpp->send_affiliation_role_change(std::to_string(iid), target, affiliation, role, this->user_jid);
|
||
}
|
||
|
||
void Bridge::send_iq_version_request(const std::string& nick, const std::string& hostname)
|
||
{
|
||
this->xmpp->send_iq_version_request(nick + "!" + utils::empty_if_fixed_server(hostname), this->user_jid);
|
||
}
|
||
|
||
void Bridge::send_xmpp_ping_request(const std::string& nick, const std::string& hostname,
|
||
const std::string& id)
|
||
{
|
||
// Use revstr because the forwarded ping to target XMPP user must not be
|
||
// the same that the request iq, but we also need to get it back easily
|
||
// (revstr again)
|
||
this->xmpp->send_ping_request(nick + "!" + utils::empty_if_fixed_server(hostname), this->user_jid, utils::revstr(id));
|
||
}
|
||
|
||
void Bridge::set_preferred_from_jid(const std::string& nick, const std::string& full_jid)
|
||
{
|
||
auto it = this->preferred_user_from.find(nick);
|
||
if (it == this->preferred_user_from.end())
|
||
this->preferred_user_from.emplace(nick, full_jid);
|
||
else
|
||
this->preferred_user_from[nick] = full_jid;
|
||
}
|
||
|
||
void Bridge::remove_preferred_from_jid(const std::string& nick)
|
||
{
|
||
auto it = this->preferred_user_from.find(nick);
|
||
if (it != this->preferred_user_from.end())
|
||
this->preferred_user_from.erase(it);
|
||
}
|
||
|
||
void Bridge::add_waiting_irc(irc_responder_callback_t&& callback)
|
||
{
|
||
this->waiting_irc.emplace_back(std::move(callback));
|
||
}
|
||
|
||
void Bridge::trigger_on_irc_message(const std::string& irc_hostname, const IrcMessage& message)
|
||
{
|
||
auto it = this->waiting_irc.begin();
|
||
while (it != this->waiting_irc.end())
|
||
{
|
||
if ((*it)(irc_hostname, message) == true)
|
||
it = this->waiting_irc.erase(it);
|
||
else
|
||
++it;
|
||
}
|
||
}
|