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biboumi/src/bridge/bridge.cpp
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2025-11-28 20:30:12 +01:00

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#include <bridge/bridge.hpp>
#include <utility>
#include <xmpp/biboumi_component.hpp>
#include <network/poller.hpp>
#include <utils/empty_if_fixed_server.hpp>
#include <utils/encoding.hpp>
#include <utils/tolower.hpp>
#include <utils/uuid.hpp>
#include <logger/logger.hpp>
#include <utils/revstr.hpp>
#include <utils/split.hpp>
#include <xmpp/jid.hpp>
#include <database/database.hpp>
#include "result_set_management.hpp"
#include <algorithm>
#include <cstring>
#include <utils/string.hpp>
using namespace std::string_literals;
static const char* action_prefix = "\01ACTION ";
static std::string in_encoding_for(const Bridge& bridge, const Iid& iid)
{
#ifdef USE_DATABASE
const auto jid = bridge.get_bare_jid();
return Database::get_encoding_in(jid, iid.get_server(), iid.get_local());
#else
(void)bridge;
(void)iid;
return {"ISO-8859-1"};
#endif
}
Bridge::Bridge(std::string user_jid, BiboumiComponent& xmpp, std::shared_ptr<Poller>& poller):
user_jid(std::move(user_jid)),
xmpp(xmpp),
poller(poller)
{
#ifdef USE_DATABASE
const auto options = Database::get_global_options(this->user_jid);
this->set_record_history(options.col<Database::RecordHistory>());
#endif
}
/**
* Return the role and affiliation, corresponding to the given irc mode
*/
static std::tuple<std::string, std::string> get_role_affiliation_from_irc_mode(const char mode)
{
if (mode == 'a' || mode == 'q'){
return std::make_tuple("moderator", "owner");}
else if (mode == 'o')
return std::make_tuple("moderator", "admin");
else if (mode == 'h')
return std::make_tuple("moderator", "member");
else if (mode == 'v')
return std::make_tuple("participant", "member");
else
return std::make_tuple("participant", "none");
}
void Bridge::shutdown(const std::string& exit_message)
{
for (auto& pair: this->irc_clients)
{
std::shared_ptr<IrcClient>& irc = pair.second;
irc->send_quit_command(exit_message);
}
}
void Bridge::remove_resource(const std::string& resource,
const std::string& part_message)
{
const auto resources_in_chan_copy = this->resources_in_chan;
for (const auto& chan_pair: resources_in_chan_copy)
{
const ChannelKey& channel_key = chan_pair.first;
const std::set<Resource>& resources = chan_pair.second;
if (resources.count(resource))
this->leave_irc_channel({std::get<0>(channel_key), std::get<1>(channel_key), {}},
part_message, resource);
}
}
void Bridge::clean()
{
auto it = this->irc_clients.begin();
while (it != this->irc_clients.end())
{
IrcClient* client = it->second.get();
if (!client->is_connected() && !client->is_connecting() &&
!client->get_resolver().is_resolving())
it = this->irc_clients.erase(it);
else
++it;
}
}
const std::string& Bridge::get_jid() const
{
return this->user_jid;
}
std::string Bridge::get_bare_jid() const
{
Jid jid(this->user_jid);
return jid.bare();
}
Xmpp::body Bridge::make_xmpp_body(const std::string& str, const std::string& encoding)
{
std::string res;
if (utils::is_valid_utf8(str.c_str()))
res = str;
else
res = utils::convert_to_utf8(str, encoding.data());
return irc_format_to_xhtmlim(res);
}
IrcClient* Bridge::make_irc_client(const std::string& hostname, const std::string& nickname)
{
try
{
return this->irc_clients.at(hostname).get();
}
catch (const std::out_of_range& exception)
{
auto username = nickname;
auto realname = nickname;
Jid jid(this->user_jid);
if (Config::get("realname_from_jid", "false") == "true")
{
username = jid.local;
realname = this->get_bare_jid();
}
this->irc_clients.emplace(hostname,
std::make_shared<IrcClient>(this->poller, hostname,
nickname, username,
realname, jid.domain,
*this));
std::shared_ptr<IrcClient> irc = this->irc_clients.at(hostname);
return irc.get();
}
}
IrcClient* Bridge::get_irc_client(const std::string& hostname)
{
try
{
return this->irc_clients.at(hostname).get();
}
catch (const std::out_of_range& exception)
{
throw IRCNotConnected(hostname);
}
}
IrcClient* Bridge::find_irc_client(const std::string& hostname) const
{
try
{
return this->irc_clients.at(hostname).get();
}
catch (const std::out_of_range& exception)
{
return nullptr;
}
}
bool Bridge::join_irc_channel(const Iid& iid, std::string nickname,
const std::string& password,
const std::string& resource,
HistoryLimit history_limit)
{
const auto& hostname = iid.get_server();
#ifdef USE_DATABASE
auto soptions = Database::get_irc_server_options(this->get_bare_jid(), hostname);
if (!soptions.col<Database::Nick>().empty())
nickname = soptions.col<Database::Nick>();
#endif
IrcClient* irc = this->make_irc_client(hostname, nickname);
irc->history_limit = history_limit;
this->add_resource_to_server(hostname, resource);
auto res_in_chan = this->is_resource_in_chan(ChannelKey{iid.get_local(), hostname}, resource);
if (!res_in_chan)
this->add_resource_to_chan(ChannelKey{iid.get_local(), hostname}, resource);
if (!irc->is_channel_joined(iid.get_local()))
{
irc->send_join_command(iid.get_local(), password);
return true;
} else {
// See https://github.com/xsf/xeps/pull/499
this->generate_channel_join_for_resource(iid, resource);
}
return false;
}
void Bridge::send_channel_message(const Iid& iid, const std::string& body, std::string id, std::vector<XmlNode> nodes_to_reflect)
{
if (iid.get_server().empty())
{
for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
this->xmpp.send_stanza_error("message", this->user_jid + "/" + resource, std::to_string(iid), "",
"cancel", "remote-server-not-found",
std::to_string(iid) + " is not a valid channel name. "
"A correct room jid is of the form: #<chan>%<server>",
false);
return;
}
IrcClient* irc = this->get_irc_client(iid.get_server());
// Because an IRC message cannot contain \n, we need to convert each line
// of text into a separate IRC message. For conveniance, we also cut the
// message into submessages on the XMPP side, this way the user of the
// gateway sees what was actually sent over IRC. For example if an user
// sends “hello\n/me waves”, two messages will be generated: “hello” and
// “/me waves”. Note that the “command” handling (messages starting with
// /me, /mode, etc) is done for each message generated this way. In the
// above example, the /me will be interpreted.
std::vector<std::string> lines = utils::split(body, '\n', true);
if (lines.empty())
return ;
if (irc->has_capability("draft/multiline"))
{
std::string uuid;
const auto xmpp_body = this->make_xmpp_body(body);
#ifdef USE_DATABASE
if (this->record_history)
uuid = Database::store_muc_message(this->get_bare_jid(), iid.get_local(), iid.get_server(), std::chrono::system_clock::now(),
std::get<0>(xmpp_body), irc->get_own_nick());
#else
uuid = utils::gen_uuid();
#endif
if (id.empty())
id = utils::gen_uuid();
IrcChannel* channel = irc->get_channel(iid.get_local());
if (!channel->joined)
{
log_warning("Cannot send message to channel ", iid.get_local(), ", it is not joined");
return;
}
std::vector<IrcMessage> messages;
for (const std::string& line: lines)
{
constexpr auto max_username_size = 10;
constexpr auto max_hostname_size = 63;
const auto line_size = 512 - 1 - ::strlen("batch=") - uuid.length() - 1 - ::strlen("draft/multiline-concat") - 1 -
irc->get_own_nick().size() - max_username_size - max_hostname_size -
::strlen(":!@ PRIVMSG ") - iid.get_local().length() - ::strlen(" :\r\n");
const auto privmsgs = cut(line, line_size);
bool first = true;
for (const auto& privmsg: privmsgs)
{
if (first)
{
messages.push_back(IrcMessage({}, std::move(std::string()), "PRIVMSG", {iid.get_local(), privmsg}));
first = false;
}
else
messages.push_back(IrcMessage({{"draft/multiline-concat", {}}}, std::move(std::string()), "PRIVMSG", {iid.get_local(), privmsg}));
}
}
MessageCallback mirror_to_all_resources = [this, iid, uuid, id, nodes_to_reflect, body](const IrcClient* irc, const IrcMessage&) {
for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
{
auto stanza = this->xmpp.make_muc_message(std::to_string(iid), irc->get_own_nick(), this->make_xmpp_body(body),
this->user_jid + "/"
+ resource, uuid, id);
for (const auto& node: nodes_to_reflect)
stanza.add_child(node);
this->xmpp.send_stanza(stanza);
}
};
irc->send_batch(uuid, "draft/multiline", {iid.get_local()}, messages, std::move(mirror_to_all_resources));
return;
}
bool first = true;
for (const std::string& line: lines)
{
std::string uuid;
#ifdef USE_DATABASE
const auto xmpp_body = this->make_xmpp_body(line);
if (this->record_history)
uuid = Database::store_muc_message(this->get_bare_jid(), iid.get_local(), iid.get_server(), std::chrono::system_clock::now(),
std::get<0>(xmpp_body), irc->get_own_nick());
#endif
if (!first || id.empty())
id = utils::gen_uuid();
MessageCallback mirror_to_all_resources = [this, iid, uuid, id, nodes_to_reflect](const IrcClient* irc, const IrcMessage& message) {
std::string line = message.arguments[1];
// “temporary” workaround for \01ACTION…\01 -> /me messages
if ((line.size() > strlen("\01ACTION\01")) &&
(line.substr(0, 7) == "\01ACTION") && line[line.size() - 1] == '\01')
line = "/me " + line.substr(8, line.size() - 9);
for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
{
auto stanza = this->xmpp.make_muc_message(std::to_string(iid), irc->get_own_nick(), this->make_xmpp_body(line),
this->user_jid + "/"
+ resource, uuid, id);
for (const auto& node: nodes_to_reflect)
stanza.add_child(node);
this->xmpp.send_stanza(stanza);
}
};
if (line.substr(0, 5) == "/mode")
{
std::vector<std::string> args = utils::split(line.substr(5), ' ', false);
irc->send_mode_command(iid.get_local(), args);
continue; // We do not want to send that back to the
// XMPP user, that’s not a textual message.
}
else if (line.substr(0, 4) == "/me ")
irc->send_channel_message(iid.get_local(), action_prefix + line.substr(4) + "\01",
std::move(mirror_to_all_resources));
else
irc->send_channel_message(iid.get_local(), line, std::move(mirror_to_all_resources));
first = false;
}
}
void Bridge::forward_affiliation_role_change(const Iid& iid, const std::string& from,
const std::string& nick,
const std::string& affiliation,
const std::string& role,
const std::string& id)
{
IrcClient* irc = this->get_irc_client(iid.get_server());
IrcChannel* chan = irc->get_channel(iid.get_local());
if (!chan || !chan->joined)
return;
IrcUser* user = chan->find_user(nick);
if (!user)
{
this->xmpp.send_stanza_error("iq", from, std::to_string(iid), id, "cancel",
"item-not-found", "no such nick", false);
return;
}
// For each affiliation or role, we have a “maximal” mode that we want to
// set. We must remove any superior mode at the same time. For example if
// the user already has +o mode, and we set its affiliation to member, we
// remove the +o mode, and add +v. For each “superior” mode (for example,
// for +v, the superior modes are 'h', 'a', 'o' and 'q') we check if that
// user has it, and if yes we remove that mode
std::size_t nb = 1; // the number of times the nick must be
// repeated in the argument list
std::string modes; // The string of modes to
// add/remove. For example "+v-aoh"
std::vector<char> modes_to_remove; // List of modes to check for removal
if (affiliation == "none")
{
modes = "";
nb = 0;
modes_to_remove = {'v', 'h', 'o', 'a', 'q'};
}
else if (affiliation == "member")
{
modes = "+v";
modes_to_remove = {'h', 'o', 'a', 'q'};
}
else if (role == "moderator")
{
modes = "+h";
modes_to_remove = {'o', 'a', 'q'};
}
else if (affiliation == "admin")
{
modes = "+o";
modes_to_remove = {'a', 'q'};
}
else if (affiliation == "owner")
{
modes = "+a";
modes_to_remove = {'q'};
}
else
return;
for (const char mode: modes_to_remove)
if (user->modes.find(mode) != user->modes.end())
{
modes += "-"s + mode;
nb++;
}
if (modes.empty())
return;
std::vector<std::string> args(nb, nick);
args.insert(args.begin(), modes);
irc->send_mode_command(iid.get_local(), args);
irc_responder_callback_t cb = [this, iid, irc, id, from, nick](const std::string& irc_hostname, const IrcMessage& message) -> bool
{
if (irc_hostname != iid.get_server())
return false;
if (message.command == "MODE" && message.arguments.size() >= 2)
{
const std::string& chan_name = message.arguments[0];
if (chan_name != iid.get_local())
return false;
const std::string actor_nick = IrcUser{message.prefix}.nick;
if (!irc || irc->get_own_nick() != actor_nick)
return false;
this->xmpp.send_iq_result(id, from, std::to_string(iid));
}
else if (message.command == "401" && message.arguments.size() >= 2)
{
const std::string target_later = message.arguments[1];
if (target_later != nick)
return false;
std::string error_message = "No such nick";
if (message.arguments.size() >= 3)
error_message = message.arguments[2];
this->xmpp.send_stanza_error("iq", from, std::to_string(iid), id, "cancel", "item-not-found",
error_message, false);
}
else if (message.command == "482" && message.arguments.size() >= 2)
{
const std::string chan_name_later = utils::tolower(message.arguments[1]);
if (chan_name_later != iid.get_local())
return false;
std::string error_message = "You're not channel operator";
if (message.arguments.size() >= 3)
error_message = message.arguments[2];
this->xmpp.send_stanza_error("iq", from, std::to_string(iid), id, "cancel", "not-allowed",
error_message, false);
}
else if (message.command == "472" && message.arguments.size() >= 2)
{
std::string error_message = "Unknown mode: " + message.arguments[1];
if (message.arguments.size() >= 3)
error_message = message.arguments[2];
this->xmpp.send_stanza_error("iq", from, std::to_string(iid), id, "cancel", "not-allowed",
error_message, false);
}
return true;
};
this->add_waiting_irc(std::move(cb));
}
void Bridge::send_private_message(const Iid& iid, const std::string& body, const std::string& type)
{
if (iid.get_local().empty() || iid.get_server().empty())
{
this->xmpp.send_stanza_error("message", this->user_jid, std::to_string(iid), "",
"cancel", "remote-server-not-found",
std::to_string(iid) + " is not a valid channel name. "
"A correct room jid is of the form: #<chan>%<server>",
false);
return;
}
IrcClient* irc = this->get_irc_client(iid.get_server());
std::vector<std::string> lines = utils::split(body, '\n', true);
if (lines.empty())
return ;
for (const std::string& line: lines)
{
if (line.substr(0, 4) == "/me ")
irc->send_private_message(iid.get_local(), action_prefix + line.substr(4) + "\01", type);
else
irc->send_private_message(iid.get_local(), line, type);
}
}
void Bridge::send_raw_message(const std::string& hostname, const std::string& body)
{
IrcClient* irc = this->get_irc_client(hostname);
irc->send_raw(body);
}
void Bridge::leave_irc_channel(Iid&& iid, const std::string& status_message, const std::string& resource)
{
IrcClient* irc = this->get_irc_client(iid.get_server());
const auto key = iid.to_tuple();
if (!this->is_resource_in_chan(key, resource))
return ;
IrcChannel* channel = irc->get_channel(iid.get_local());
const auto resources = this->number_of_resources_in_chan(key);
if (resources == 1)
{
// Do not send a PART message if we actually are not in that channel
// or if we already sent a PART but we are just waiting for the
// acknowledgment from the server
bool persistent = false;
#ifdef USE_DATABASE
const auto goptions = Database::get_global_options(this->user_jid);
if (goptions.col<Database::GlobalPersistent>())
persistent = true;
else
{
const auto coptions = Database::get_irc_channel_options_with_server_default(this->user_jid, iid.get_server(), iid.get_local());
persistent = coptions.col<Database::Persistent>();
}
#endif
if (channel->joined && !channel->parting && !persistent)
{
irc->send_part_command(iid.get_local(), status_message);
}
else if (channel->joined)
{
this->send_muc_leave(iid, *channel->get_self(), "", true, true, resource, irc);
}
if (persistent)
this->remove_resource_from_chan(key, resource);
}
else
{
if (channel && channel->joined)
this->send_muc_leave(iid, *channel->get_self(),
"Biboumi note: " + std::to_string(resources - 1) + " resources are still in this channel.",
true, true, resource, irc);
this->remove_resource_from_chan(key, resource);
}
if (this->number_of_channels_the_resource_is_in(iid.get_server(), resource) == 0)
this->remove_resource_from_server(iid.get_server(), resource);
}
void Bridge::send_irc_nick_change(const Iid& iid, const std::string& new_nick, const std::string& requesting_resource)
{
// We don’t change the nick if the presence was sent to a channel the resource is not in.
auto res_in_chan = this->is_resource_in_chan(ChannelKey{iid.get_local(), iid.get_server()}, requesting_resource);
if (!res_in_chan)
return;
IrcClient* irc = this->get_irc_client(iid.get_server());
irc->send_nick_command(new_nick);
}
void Bridge::send_irc_channel_list_request(const Iid& iid, const std::string& iq_id, const std::string& to_jid,
ResultSetInfo rs_info)
{
auto& list = this->channel_list_cache[iid.get_server()];
// We fetch the list from the IRC server only if we have a complete
// cached list that needs to be invalidated (that is, when the request
// doesn’t have a after or before, or when the list is empty).
// If the list is not complete, this means that a request is already
// ongoing, so we just need to add the callback.
// By default the list is complete and empty.
if (list.complete &&
(list.channels.empty() || (rs_info.after.empty() && rs_info.before.empty())))
{
IrcClient* irc = this->get_irc_client(iid.get_server());
irc->send_list_command();
// Add a callback that will populate our list
list.channels.clear();
list.complete = false;
irc_responder_callback_t cb = [this, iid](const std::string& irc_hostname,
const IrcMessage& message) -> bool
{
if (irc_hostname != iid.get_server())
return false;
auto& list = this->channel_list_cache[iid.get_server()];
if (message.command == "263" || message.command == "RPL_TRYAGAIN" || message.command == "ERR_TOOMANYMATCHES"
|| message.command == "ERR_NOSUCHSERVER")
{
list.complete = true;
return true;
}
else if (message.command == "322" || message.command == "RPL_LIST")
{ // Add element to list
if (message.arguments.size() == 4)
{
list.channels.emplace_back(message.arguments[1] + utils::empty_if_fixed_server("%" + iid.get_server()),
message.arguments[2], message.arguments[3]);
}
return false;
}
else if (message.command == "323" || message.command == "RPL_LISTEND")
{ // Send the iq response with the content of the list
list.complete = true;
return true;
}
return false;
};
this->add_waiting_irc(std::move(cb));
}
// If the list is complete, we immediately send the answer.
// Otherwise, we install a callback, that will populate our list and send
// the answer when we can.
if (list.complete)
{
this->send_matching_channel_list(list, rs_info, iq_id, to_jid, std::to_string(iid));
}
else
{
// Add a callback to answer the request as soon as we can
irc_responder_callback_t cb = [this, iid, iq_id, to_jid,
rs_info=std::move(rs_info)](const std::string& irc_hostname,
const IrcMessage& message) -> bool
{
if (irc_hostname != iid.get_server())
return false;
if (message.command == "263" || message.command == "RPL_TRYAGAIN" || message.command == "ERR_TOOMANYMATCHES"
|| message.command == "ERR_NOSUCHSERVER")
{
std::string text;
if (message.arguments.size() >= 2)
text = message.arguments[1];
this->xmpp.send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "wait", "service-unavailable", text, false);
return true;
}
else if (message.command == "322" || message.command == "RPL_LIST")
{
auto& list = channel_list_cache[iid.get_server()];
const auto res = this->send_matching_channel_list(list, rs_info, iq_id, to_jid, std::to_string(iid));
return res;
}
else if (message.command == "323" || message.command == "RPL_LISTEND")
{ // Send the iq response with the content of the list
auto& list = channel_list_cache[iid.get_server()];
this->send_matching_channel_list(list, rs_info, iq_id, to_jid, std::to_string(iid));
return true;
}
return false;
};
this->add_waiting_irc(std::move(cb));
}
}
bool Bridge::send_matching_channel_list(const ChannelList& channel_list, const ResultSetInfo& rs_info,
const std::string& id, const std::string& to_jid, const std::string& from)
{
auto begin = channel_list.channels.begin();
auto end = channel_list.channels.end();
if (channel_list.complete)
{
begin = std::find_if(channel_list.channels.begin(), channel_list.channels.end(), [this, &rs_info](const ListElement& element)
{
return rs_info.after == element.channel + "@" + this->xmpp.get_served_hostname();
});
if (begin == channel_list.channels.end())
begin = channel_list.channels.begin();
else
begin = std::next(begin);
end = std::find_if(channel_list.channels.begin(), channel_list.channels.end(), [this, &rs_info](const ListElement& element)
{
return rs_info.before == element.channel + "@" + this->xmpp.get_served_hostname();
});
if (rs_info.max >= 0)
{
if (std::distance(begin, end) >= rs_info.max)
end = begin + rs_info.max;
}
}
else
{
if (rs_info.after.empty() && rs_info.before.empty() && rs_info.max < 0)
return false;
if (!rs_info.after.empty())
{
begin = std::find_if(channel_list.channels.begin(), channel_list.channels.end(), [this, &rs_info](const ListElement& element)
{
return rs_info.after == element.channel + "@" + this->xmpp.get_served_hostname();
});
if (begin == channel_list.channels.end())
return false;
begin = std::next(begin);
}
if (!rs_info.before.empty())
{
end = std::find_if(channel_list.channels.begin(), channel_list.channels.end(), [this, &rs_info](const ListElement& element)
{
return rs_info.before == element.channel + "@" + this->xmpp.get_served_hostname();
});
if (end == channel_list.channels.end())
return false;
}
if (rs_info.max >= 0)
{
if (std::distance(begin, end) < rs_info.max)
return false;
else
end = begin + rs_info.max;
}
}
this->xmpp.send_iq_room_list_result(id, to_jid, from, channel_list, begin, end, rs_info);
return true;
}
void Bridge::send_irc_kick(const Iid& iid, const std::string& target, const std::string& reason,
const std::string& iq_id, const std::string& to_jid)
{
IrcClient* irc = this->get_irc_client(iid.get_server());
irc->send_kick_command(iid.get_local(), target, reason);
irc_responder_callback_t cb = [this, target, iq_id, to_jid, iid](const std::string& irc_hostname,
const IrcMessage& message) -> bool
{
if (irc_hostname != iid.get_server())
return false;
if (message.command == "KICK" && message.arguments.size() >= 2)
{
const std::string target_later = message.arguments[1];
const std::string chan_name_later = utils::tolower(message.arguments[0]);
if (target_later != target || chan_name_later != iid.get_local())
return false;
this->xmpp.send_iq_result(iq_id, to_jid, std::to_string(iid));
}
else if (message.command == "401" && message.arguments.size() >= 2)
{
const std::string target_later = message.arguments[1];
if (target_later != target)
return false;
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, std::to_string(iid), iq_id, "cancel", "item-not-found",
error_message, false);
}
else if (message.command == "482" && message.arguments.size() >= 2)
{
const std::string chan_name_later = utils::tolower(message.arguments[1]);
if (chan_name_later != iid.get_local())
return false;
std::string error_message = "You're not channel operator";
if (message.arguments.size() >= 3)
error_message = message.arguments[2];
this->xmpp.send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "cancel", "not-allowed",
error_message, false);
}
return true;
};
this->add_waiting_irc(std::move(cb));
}
void Bridge::set_channel_topic(const Iid& iid, std::string subject)
{
IrcClient* irc = this->get_irc_client(iid.get_server());
std::string::size_type pos{0};
while ((pos = subject.find('\n', pos)) != std::string::npos)
subject[pos] = ' ';
irc->send_topic_command(iid.get_local(), subject);
}
void Bridge::send_xmpp_version_to_irc(const Iid& iid, const std::string& name, const std::string& version, const std::string& os)
{
std::string result(name + " " + version + " " + os);
this->send_private_message(iid, "\01VERSION " + result + "\01", "NOTICE");
}
void Bridge::send_irc_ping_result(const Iid& iid, const std::string& id)
{
this->send_private_message(iid, "\01PING " + utils::revstr(id) + "\01", "NOTICE");
}
void Bridge::send_irc_user_ping_request(const std::string& irc_hostname, const std::string& nick,
const std::string& iq_id, const std::string& to_jid,
const std::string& from_jid)
{
Iid iid(nick, irc_hostname, Iid::Type::User);
this->send_private_message(iid, "\01PING " + iq_id + "\01");
irc_responder_callback_t cb = [this, nick=utils::tolower(nick), iq_id, to_jid, irc_hostname, from_jid]
(const std::string& hostname, const IrcMessage& message) -> bool
{
if (irc_hostname != hostname || message.arguments.size() < 2)
return false;
IrcUser user(message.prefix);
const std::string body = message.arguments[1];
if (message.command == "NOTICE" && utils::tolower(user.nick) == nick
&& body.substr(0, 6) == "\01PING ")
{
const std::string id = body.substr(6, body.size() - 7);
if (id != iq_id)
return false;
this->xmpp.send_iq_result_full_jid(iq_id, to_jid, from_jid);
return true;
}
if (message.command == "401" && message.arguments[1] == nick)
{
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", "service-unavailable",
error_message, true);
return true;
}
return false;
};
this->add_waiting_irc(std::move(cb));
}
void Bridge::send_irc_participant_ping_request(const Iid& iid, const std::string& nick,
const std::string& iq_id, const std::string& to_jid,
const std::string& from_jid)
{
Jid from(to_jid);
IrcClient* irc = this->get_irc_client(iid.get_server());
IrcChannel* chan = irc->get_channel(iid.get_local());
if (!chan->joined || !this->is_resource_in_chan(iid.to_tuple(), from.resource))
{
this->xmpp.send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "not-acceptable",
"", true);
return;
}
if (chan->get_self()->nick == nick)
{
// XEP-0410 self-ping optimisation: always reply without going the full
// round-trip through IRC and possibly another XMPP client. See the XEP
// for details.
Jid iq_from(from_jid);
iq_from.local = std::to_string(iid);
iq_from.resource = nick;
Stanza iq("iq");
iq["from"] = iq_from.full();
iq["to"] = to_jid;
iq["id"] = iq_id;
iq["type"] = "result";
this->xmpp.send_stanza(iq);
return;
}
if (chan->get_self()->nick != nick && !chan->find_user(nick))
{
this->xmpp.send_stanza_error("iq", to_jid, from_jid, iq_id, "cancel", "item-not-found",
"Recipient not in room", true);
return;
}
// The user is in the room, send it a direct PING
this->send_irc_user_ping_request(iid.get_server(), nick, iq_id, to_jid, from_jid);
}
void Bridge::on_gateway_ping(const std::string& irc_hostname, const std::string& iq_id, const std::string& to_jid,
const std::string& from_jid)
{
Jid jid(from_jid);
if (irc_hostname.empty() || this->find_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_invitation(const Iid& iid, const std::string& to)
{
IrcClient* irc = this->get_irc_client(iid.get_server());
Jid to_jid(to);
std::string target_nick;
// Many ways to address a nick:
// A jid (ANY jid…) with a resource
if (!to_jid.resource.empty())
target_nick = to_jid.resource;
else if (!to_jid.local.empty()) // A jid with a iid with a local part
target_nick = Iid(to_jid.local, {}).get_local();
else
target_nick = to; // Not a jid, just the nick
irc->send_invitation(iid.get_local(), target_nick);
}
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, Iid::Type::User);
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" && utils::tolower(user.nick) == utils::tolower(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, const bool log)
{
const auto encoding = in_encoding_for(*this, iid);
std::string uuid{};
if (muc)
{
#ifdef USE_DATABASE
const auto xmpp_body = this->make_xmpp_body(body, encoding);
if (log && this->record_history)
uuid = Database::store_muc_message(this->get_bare_jid(), iid.get_local(), iid.get_server(), std::chrono::system_clock::now(),
std::get<0>(xmpp_body), nick);
#else
(void)log;
#endif
for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
{
auto stanza = this->xmpp.make_muc_message(std::to_string(iid), nick, this->make_xmpp_body(body, encoding),
this->user_jid + "/"
+ resource, uuid, utils::gen_uuid());
this->xmpp.send_stanza(stanza);
}
}
else
{
this->xmpp.send_message(std::to_string(iid),
this->make_xmpp_body(body, encoding),
this->user_jid,
"chat", false, false);
}
}
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(const Iid& iid, const IrcUser& user,
const std::string& message, const bool self,
const bool user_requested,
const std::string& resource,
const IrcClient* client)
{
std::string affiliation;
std::string role;
std::tie(role, affiliation) = get_role_affiliation_from_irc_mode(user.get_most_significant_mode(client->get_sorted_user_modes()));
if (!resource.empty())
this->xmpp.send_muc_leave(std::to_string(iid), user.nick, this->make_xmpp_body(message),
this->user_jid + "/" + resource, self, user_requested, affiliation, role);
else
{
for (const auto &res: this->resources_in_chan[iid.to_tuple()])
this->xmpp.send_muc_leave(std::to_string(iid), user.nick, this->make_xmpp_body(message),
this->user_jid + "/" + res, self, user_requested, affiliation, role);
if (self)
{
// Copy the resources currently in that channel
const auto resources_in_chan = this->resources_in_chan[iid.to_tuple()];
this->remove_all_resources_from_chan(iid.to_tuple());
// Now, for each resource that was in that channel, remove it from the server if it’s
// not in any other channel
for (const auto& r: resources_in_chan)
if (this->number_of_channels_the_resource_is_in(iid.get_server(), r) == 0)
this->remove_resource_from_server(iid.get_server(), r);
}
}
IrcClient* irc = this->find_irc_client(iid.get_server());
if (self && 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);
for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
this->xmpp.send_nick_change(std::to_string(iid),
old_nick, new_nick, affiliation, role, this->user_jid + "/" + resource, 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" + user.nick + (user.host.empty()?
"\u0003: ":
(" (\u000310" + user.host + "\u000303)\u0003: ")) + msg;
}
else
body = msg;
const auto encoding = in_encoding_for(*this, {from, this});
for (const auto& resource: this->resources_in_server[from])
{
if (Config::get("fixed_irc_server", "").empty())
this->xmpp.send_message(from, this->make_xmpp_body(body, encoding), this->user_jid + "/" + resource, "chat", false, true);
else
this->xmpp.send_message("", this->make_xmpp_body(body, encoding), this->user_jid + "/" + resource, "chat", false, true);
}
}
void Bridge::send_user_join(const std::string& hostname, const std::string& chan_name,
const IrcUser* user, const char user_mode, const bool self)
{
const auto resources = this->resources_in_chan[ChannelKey{chan_name, hostname}];
if (self && resources.empty())
{ // This was a forced join: no client ever asked to join this room,
// but the server tells us we are in that room anyway. XMPP can’t
// do that, so we invite all the resources to join that channel.
const Iid iid(chan_name, hostname, Iid::Type::Channel);
this->send_xmpp_invitation(iid, "");
}
else
{
for (const auto& resource: resources)
this->send_user_join(hostname, chan_name, user, user_mode, self, resource);
}
}
void Bridge::send_user_join(const std::string& hostname, const std::string& chan_name,
const IrcUser* user, const char user_mode,
const bool self, const std::string& resource)
{
std::string affiliation;
std::string role;
std::tie(role, affiliation) = get_role_affiliation_from_irc_mode(user_mode);
std::string encoded_chan_name(chan_name);
xep0106::encode(encoded_chan_name);
std::string encoded_nick_name(user->nick);
xep0106::encode(encoded_nick_name);
std::string full_jid =
encoded_nick_name + utils::empty_if_fixed_server("%" + hostname)
+ "@" + this->xmpp.get_served_hostname();
if (!user->host.empty())
full_jid += "/" + user->host;
this->xmpp.send_user_join(encoded_chan_name + utils::empty_if_fixed_server("%" + hostname),
user->nick, full_jid, affiliation, role,
this->user_jid + "/" + resource, self);
}
void Bridge::send_topic(const std::string& hostname, const std::string& chan_name, const std::string& topic,
const std::string& who)
{
for (const auto& resource: this->resources_in_chan[ChannelKey{chan_name, hostname}])
{
this->send_topic(hostname, chan_name, topic, who, resource);
}
}
void Bridge::send_topic(const std::string& hostname, const std::string& chan_name,
const std::string& topic, const std::string& who,
const std::string& resource)
{
std::string encoded_chan_name(chan_name);
xep0106::encode(encoded_chan_name);
const auto encoding = in_encoding_for(*this, {encoded_chan_name, hostname, Iid::Type::Channel});
this->xmpp.send_topic(encoded_chan_name + utils::empty_if_fixed_server(
"%" + hostname), this->make_xmpp_body(topic, encoding), this->user_jid + "/" + resource, who);
}
void Bridge::send_room_history(const std::string& hostname, const std::string& chan_name, const HistoryLimit& history_limit)
{
for (const auto& resource: this->resources_in_chan[ChannelKey{chan_name, hostname}])
this->send_room_history(hostname, chan_name, resource, history_limit);
}
void Bridge::send_room_history(const std::string& hostname, std::string chan_name, const std::string& resource, const HistoryLimit& history_limit)
{
#ifdef USE_DATABASE
const auto goptions = Database::get_global_options(this->user_jid);
auto limit = goptions.col<Database::MaxHistoryLength>();
if (limit < 0)
limit = 20;
if (history_limit.stanzas >= 0 && history_limit.stanzas < limit)
limit = history_limit.stanzas;
const auto result = Database::get_muc_logs(this->user_jid, chan_name, hostname, static_cast<std::size_t>(limit), history_limit.since, {}, Id::unset_value, Database::Paging::last);
const auto& lines = std::get<1>(result);
chan_name.append(utils::empty_if_fixed_server("%" + hostname));
for (const auto& line: lines)
{
const auto seconds = line.col<Database::Date>();
this->xmpp.send_history_message(chan_name, line.col<Database::Nick>(), line.col<Database::Body>(),
this->user_jid + "/" + resource, seconds);
}
#else
(void)hostname;
(void)chan_name;
(void)resource;
(void)history_limit;
#endif
}
std::string Bridge::get_own_nick(const Iid& iid)
{
IrcClient* irc = this->find_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,
const bool self)
{
for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
this->xmpp.kick_user(std::to_string(iid), target, reason, author, this->user_jid + "/" + resource, self);
}
void Bridge::send_nickname_conflict_error(const Iid& iid, const std::string& nickname)
{
for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
this->xmpp.send_presence_error(std::to_string(iid), nickname, this->user_jid + "/" + resource,
"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);
for (const auto& resource: this->resources_in_chan[iid.to_tuple()])
this->xmpp.send_affiliation_role_change(std::to_string(iid), target, affiliation, role,
this->user_jid + "/" + resource);
}
void Bridge::send_iq_version_request(const std::string& nick, const std::string& hostname)
{
const auto resources = this->resources_in_server[hostname];
if (resources.begin() != resources.end())
this->xmpp.send_iq_version_request(utils::tolower(nick) + utils::empty_if_fixed_server("%" + hostname),
this->user_jid + "/" + *resources.begin());
}
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 as the request iq, but we also need to get it back easily
// (revstr again)
// Forward to the first resource (arbitrary, based on the “order” of the std::set) only
const auto resources = this->resources_in_server[hostname];
if (resources.begin() != resources.end())
this->xmpp.send_ping_request(utils::tolower(nick) + utils::empty_if_fixed_server("%" + hostname),
this->user_jid + "/" + *resources.begin(), utils::revstr(id));
}
void Bridge::send_xmpp_invitation(const Iid& iid, const std::string& author)
{
for (const auto& resource: this->resources_in_server[iid.get_server()])
this->xmpp.send_invitation(std::to_string(iid), this->user_jid + "/" + resource, author);
}
void Bridge::on_irc_client_connected(const std::string& hostname)
{
this->xmpp.on_irc_client_connected(hostname, this->user_jid);
}
void Bridge::on_irc_client_disconnected(const std::string& hostname)
{
this->xmpp.on_irc_client_disconnected(hostname, this->user_jid);
}
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;
}
}
std::unordered_map<std::string, std::shared_ptr<IrcClient>>& Bridge::get_irc_clients()
{
return this->irc_clients;
}
const std::unordered_map<std::string, std::shared_ptr<IrcClient>>& Bridge::get_irc_clients() const
{
return this->irc_clients;
}
std::set<char> Bridge::get_chantypes(const std::string& hostname) const
{
IrcClient* irc = this->find_irc_client(hostname);
if (!irc)
return {'&', '#', '+', '!'};
return irc->get_chantypes();
}
void Bridge::add_resource_to_chan(const Bridge::ChannelKey& channel, const std::string& resource)
{
auto it = this->resources_in_chan.find(channel);
if (it == this->resources_in_chan.end())
this->resources_in_chan[channel] = {resource};
else
it->second.insert(resource);
}
void Bridge::remove_resource_from_chan(const Bridge::ChannelKey& channel, const std::string& resource)
{
auto it = this->resources_in_chan.find(channel);
if (it != this->resources_in_chan.end())
{
it->second.erase(resource);
if (it->second.empty())
this->resources_in_chan.erase(it);
}
}
bool Bridge::is_resource_in_chan(const Bridge::ChannelKey& channel, const std::string& resource) const
{
auto it = this->resources_in_chan.find(channel);
if (it != this->resources_in_chan.end())
if (it->second.count(resource) == 1)
return true;
return false;
}
void Bridge::remove_all_resources_from_chan(const Bridge::ChannelKey& channel)
{
this->resources_in_chan.erase(channel);
}
void Bridge::add_resource_to_server(const Bridge::IrcHostname& irc_hostname, const std::string& resource)
{
auto it = this->resources_in_server.find(irc_hostname);
if (it == this->resources_in_server.end())
this->resources_in_server[irc_hostname] = {resource};
else
it->second.insert(resource);
}
void Bridge::remove_resource_from_server(const Bridge::IrcHostname& irc_hostname, const std::string& resource)
{
auto it = this->resources_in_server.find(irc_hostname);
if (it != this->resources_in_server.end())
{
it->second.erase(resource);
if (it->second.empty())
this->resources_in_server.erase(it);
}
}
std::size_t Bridge::number_of_resources_in_chan(const Bridge::ChannelKey& channel) const
{
auto it = this->resources_in_chan.find(channel);
if (it == this->resources_in_chan.end())
return 0;
return it->second.size();
}
std::size_t Bridge::number_of_channels_the_resource_is_in(const std::string& irc_hostname, const std::string& resource) const
{
std::size_t res = 0;
for (auto pair: this->resources_in_chan)
{
if (std::get<1>(pair.first) == irc_hostname && pair.second.count(resource) != 0)
res++;
}
return res;
}
void Bridge::generate_channel_join_for_resource(const Iid& iid, const std::string& resource)
{
IrcClient* irc = this->get_irc_client(iid.get_server());
IrcChannel* channel = irc->get_channel(iid.get_local());
const auto self = channel->get_self();
// Send the occupant list
for (const auto& user: channel->get_users())
{
if (user->nick != self->nick)
{
this->send_user_join(iid.get_server(), iid.get_encoded_local(),
user.get(), user->get_most_significant_mode(irc->get_sorted_user_modes()),
false, resource);
}
}
this->send_user_join(iid.get_server(), iid.get_encoded_local(),
self, self->get_most_significant_mode(irc->get_sorted_user_modes()),
true, resource);
this->send_room_history(iid.get_server(), iid.get_local(), resource, irc->history_limit);
this->send_topic(iid.get_server(), iid.get_encoded_local(), channel->topic, channel->topic_author, resource);
}
#ifdef USE_DATABASE
void Bridge::set_record_history(const bool val)
{
this->record_history = val;
}
#endif