biboumi_adhoc_commands.cpp 25.9 KB
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#include <xmpp/biboumi_adhoc_commands.hpp>
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#include <xmpp/biboumi_component.hpp>
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#include <utils/scopeguard.hpp>
#include <bridge/bridge.hpp>
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#include <config/config.hpp>
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#include <utils/string.hpp>
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#include <utils/split.hpp>
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#include <xmpp/jid.hpp>
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#include <algorithm>
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#include <sstream>
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#include <iomanip>
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#include <biboumi.h>

#ifdef USE_DATABASE
#include <database/database.hpp>
#endif

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#ifndef HAS_PUT_TIME
#include <ctime>
#endif

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using namespace std::string_literals;
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void DisconnectUserStep1(XmppComponent& xmpp_component, AdhocSession&, XmlNode& command_node)
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{
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  auto& biboumi_component = dynamic_cast<BiboumiComponent&>(xmpp_component);
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  XmlSubNode x(command_node, "jabber:x:data:x");
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  x["type"] = "form";
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  XmlSubNode title(x, "title");
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  title.set_inner("Disconnect a user from the gateway");
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  XmlSubNode instructions(x, "instructions");
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  instructions.set_inner("Choose a user JID and a quit message");
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  XmlSubNode jids_field(x, "field");
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  jids_field["var"] = "jids";
  jids_field["type"] = "list-multi";
  jids_field["label"] = "The JIDs to disconnect";
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  XmlSubNode required(jids_field, "required");
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  for (Bridge* bridge: biboumi_component.get_bridges())
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    {
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      XmlSubNode option(jids_field, "option");
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      option["label"] = bridge->get_jid();
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      XmlSubNode value(option, "value");
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      value.set_inner(bridge->get_jid());
    }

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  XmlSubNode message_field(x, "field");
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  message_field["var"] = "quit-message";
  message_field["type"] = "text-single";
  message_field["label"] = "Quit message";
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  XmlSubNode message_value(message_field, "value");
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  message_value.set_inner("Disconnected by admin");
}

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void DisconnectUserStep2(XmppComponent& xmpp_component, AdhocSession& session, XmlNode& command_node)
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{
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  auto& biboumi_component = dynamic_cast<BiboumiComponent&>(xmpp_component);
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  // Find out if the jids, and the quit message are provided in the form.
  std::string quit_message;
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  const XmlNode* x = command_node.get_child("x", "jabber:x:data");
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  if (x)
    {
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      const XmlNode* message_field = nullptr;
      const XmlNode* jids_field = nullptr;
      for (const XmlNode* field: x->get_children("field", "jabber:x:data"))
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        if (field->get_tag("var") == "jids")
          jids_field = field;
        else if (field->get_tag("var") == "quit-message")
          message_field = field;
      if (message_field)
        {
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          const XmlNode* value = message_field->get_child("value", "jabber:x:data");
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          if (value)
            quit_message = value->get_inner();
        }
      if (jids_field)
        {
          std::size_t num = 0;
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          for (const XmlNode* value: jids_field->get_children("value", "jabber:x:data"))
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            {
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              Bridge* bridge = biboumi_component.find_user_bridge(value->get_inner());
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              if (bridge)
                {
                  bridge->shutdown(quit_message);
                  num++;
                }
            }
          command_node.delete_all_children();

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          XmlSubNode note(command_node, "note");
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          note["type"] = "info";
          if (num == 0)
            note.set_inner("No user were disconnected.");
          else if (num == 1)
            note.set_inner("1 user has been disconnected.");
          else
            note.set_inner(std::to_string(num) + " users have been disconnected.");
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          return;
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        }
    }
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  XmlSubNode error(command_node, ADHOC_NS":error");
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  error["type"] = "modify";
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  XmlSubNode condition(error, STANZA_NS":bad-request");
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  session.terminate();
}
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#ifdef USE_DATABASE
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void ConfigureGlobalStep1(XmppComponent&, AdhocSession& session, XmlNode& command_node)
{
  const Jid owner(session.get_owner_jid());
  const Jid target(session.get_target_jid());

  auto options = Database::get_global_options(owner.bare());

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  XmlSubNode x(command_node, "jabber:x:data:x");
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  x["type"] = "form";
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  XmlSubNode title(x, "title");
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  title.set_inner("Configure some global default settings.");
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  XmlSubNode instructions(x, "instructions");
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  instructions.set_inner("Edit the form, to configure your global settings for the component.");

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  XmlSubNode max_histo_length(x, "field");
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  max_histo_length["var"] = "max_history_length";
  max_histo_length["type"] = "text-single";
  max_histo_length["label"] = "Max history length";
  max_histo_length["desc"] = "The maximum number of lines in the history that the server sends when joining a channel";

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  {
    XmlSubNode value(max_histo_length, "value");
    value.set_inner(std::to_string(options.maxHistoryLength.value()));
  }
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  XmlSubNode record_history(x, "field");
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  record_history["var"] = "record_history";
  record_history["type"] = "boolean";
  record_history["label"] = "Record history";
  record_history["desc"] = "Whether to save the messages into the database, or not";

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  {
    XmlSubNode value(record_history, "value");
    value.set_name("value");
    if (options.recordHistory.value())
      value.set_inner("true");
    else
      value.set_inner("false");
  }
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}

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void ConfigureGlobalStep2(XmppComponent& xmpp_component, AdhocSession& session, XmlNode& command_node)
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{
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  auto& biboumi_component = dynamic_cast<BiboumiComponent&>(xmpp_component);
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  const XmlNode* x = command_node.get_child("x", "jabber:x:data");
  if (x)
    {
      const Jid owner(session.get_owner_jid());
      auto options = Database::get_global_options(owner.bare());
      for (const XmlNode* field: x->get_children("field", "jabber:x:data"))
        {
          const XmlNode* value = field->get_child("value", "jabber:x:data");

          if (field->get_tag("var") == "max_history_length" &&
              value && !value->get_inner().empty())
            options.maxHistoryLength = value->get_inner();
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          else if (field->get_tag("var") == "record_history" &&
                   value && !value->get_inner().empty())
            {
              options.recordHistory = to_bool(value->get_inner());
              Bridge* bridge = biboumi_component.find_user_bridge(owner.bare());
              if (bridge)
                bridge->set_record_history(options.recordHistory.value());
            }
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        }

      options.update();

      command_node.delete_all_children();
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      XmlSubNode note(command_node, "note");
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      note["type"] = "info";
      note.set_inner("Configuration successfully applied.");
      return;
    }
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  XmlSubNode error(command_node, ADHOC_NS":error");
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  error["type"] = "modify";
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  XmlSubNode condition(error, STANZA_NS":bad-request");
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  session.terminate();
}

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void ConfigureIrcServerStep1(XmppComponent&, AdhocSession& session, XmlNode& command_node)
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{
  const Jid owner(session.get_owner_jid());
  const Jid target(session.get_target_jid());
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  std::string server_domain;
  if ((server_domain = Config::get("fixed_irc_server", "")).empty())
    server_domain = target.local;
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  auto options = Database::get_irc_server_options(owner.local + "@" + owner.domain,
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                                                  server_domain);
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  XmlSubNode x(command_node, "jabber:x:data:x");
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  x["type"] = "form";
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  XmlSubNode title(x, "title");
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  title.set_inner("Configure the IRC server "s + server_domain);
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  XmlSubNode instructions(x, "instructions");
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  instructions.set_inner("Edit the form, to configure the settings of the IRC server "s + server_domain);
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  XmlSubNode ports(x, "field");
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  ports["var"] = "ports";
  ports["type"] = "text-multi";
  ports["label"] = "Ports";
  ports["desc"] = "List of ports to try, without TLS. Defaults: 6667.";
  auto vals = utils::split(options.ports.value(), ';', false);
  for (const auto& val: vals)
    {
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      XmlSubNode ports_value(ports, "value");
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      ports_value.set_inner(val);
    }

#ifdef BOTAN_FOUND
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  XmlSubNode tls_ports(x, "field");
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  tls_ports["var"] = "tls_ports";
  tls_ports["type"] = "text-multi";
  tls_ports["label"] = "TLS ports";
  tls_ports["desc"] = "List of ports to try, with TLS. Defaults: 6697, 6670.";
  vals = utils::split(options.tlsPorts.value(), ';', false);
  for (const auto& val: vals)
    {
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      XmlSubNode tls_ports_value(tls_ports, "value");
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      tls_ports_value.set_inner(val);
    }
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  XmlSubNode verify_cert(x, "field");
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  verify_cert["var"] = "verify_cert";
  verify_cert["type"] = "boolean";
  verify_cert["label"] = "Verify certificate";
  verify_cert["desc"] = "Whether or not to abort the connection if the server’s TLS certificate is invalid";
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  XmlSubNode verify_cert_value(verify_cert, "value");
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  if (options.verifyCert.value())
    verify_cert_value.set_inner("true");
  else
    verify_cert_value.set_inner("false");
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  XmlSubNode fingerprint(x, "field");
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  fingerprint["var"] = "fingerprint";
  fingerprint["type"] = "text-single";
  fingerprint["label"] = "SHA-1 fingerprint of the TLS certificate to trust.";
  if (!options.trustedFingerprint.value().empty())
    {
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      XmlSubNode fingerprint_value(fingerprint, "value");
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      fingerprint_value.set_inner(options.trustedFingerprint.value());
    }
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#endif
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  XmlSubNode pass(x, "field");
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  pass["var"] = "pass";
  pass["type"] = "text-private";
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  pass["label"] = "Server password";
  pass["desc"] = "Will be used in a PASS command when connecting";
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  if (!options.pass.value().empty())
    {
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      XmlSubNode pass_value(pass, "value");
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      pass_value.set_inner(options.pass.value());
    }

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  XmlSubNode after_cnt_cmd(x, "field");
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  after_cnt_cmd["var"] = "after_connect_command";
  after_cnt_cmd["type"] = "text-single";
  after_cnt_cmd["desc"] = "Custom IRC command sent after the connection is established with the server.";
  after_cnt_cmd["label"] = "After-connection IRC command";
  if (!options.afterConnectionCommand.value().empty())
    {
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      XmlSubNode after_cnt_cmd_value(after_cnt_cmd, "value");
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      after_cnt_cmd_value.set_inner(options.afterConnectionCommand.value());
    }

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  if (Config::get("realname_customization", "true") == "true")
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    {
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      XmlSubNode username(x, "field");
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      username["var"] = "username";
      username["type"] = "text-single";
      username["label"] = "Username";
      if (!options.username.value().empty())
        {
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          XmlSubNode username_value(username, "value");
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          username_value.set_inner(options.username.value());
        }

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      XmlSubNode realname(x, "field");
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      realname["var"] = "realname";
      realname["type"] = "text-single";
      realname["label"] = "Realname";
      if (!options.realname.value().empty())
        {
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          XmlSubNode realname_value(realname, "value");
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          realname_value.set_inner(options.realname.value());
        }
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    }

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  XmlSubNode encoding_out(x, "field");
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  encoding_out["var"] = "encoding_out";
  encoding_out["type"] = "text-single";
  encoding_out["desc"] = "The encoding used when sending messages to the IRC server.";
  encoding_out["label"] = "Out encoding";
  if (!options.encodingOut.value().empty())
    {
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      XmlSubNode encoding_out_value(encoding_out, "value");
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      encoding_out_value.set_inner(options.encodingOut.value());
    }

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  XmlSubNode encoding_in(x, "field");
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  encoding_in["var"] = "encoding_in";
  encoding_in["type"] = "text-single";
  encoding_in["desc"] = "The encoding used to decode message received from the IRC server.";
  encoding_in["label"] = "In encoding";
  if (!options.encodingIn.value().empty())
    {
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      XmlSubNode encoding_in_value(encoding_in, "value");
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      encoding_in_value.set_inner(options.encodingIn.value());
    }
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}

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void ConfigureIrcServerStep2(XmppComponent&, AdhocSession& session, XmlNode& command_node)
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{
  const XmlNode* x = command_node.get_child("x", "jabber:x:data");
  if (x)
    {
      const Jid owner(session.get_owner_jid());
      const Jid target(session.get_target_jid());
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      std::string server_domain;
      if ((server_domain = Config::get("fixed_irc_server", "")).empty())
        server_domain = target.local;
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      auto options = Database::get_irc_server_options(owner.local + "@" + owner.domain,
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                                                      server_domain);
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      for (const XmlNode* field: x->get_children("field", "jabber:x:data"))
        {
          const XmlNode* value = field->get_child("value", "jabber:x:data");
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          const std::vector<const XmlNode*> values = field->get_children("value", "jabber:x:data");
          if (field->get_tag("var") == "ports")
            {
              std::string ports;
              for (const auto& val: values)
                ports += val->get_inner() + ";";
              options.ports = ports;
            }

#ifdef BOTAN_FOUND
          else if (field->get_tag("var") == "tls_ports")
            {
              std::string ports;
              for (const auto& val: values)
                ports += val->get_inner() + ";";
              options.tlsPorts = ports;
            }
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          else if (field->get_tag("var") == "verify_cert" && value
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                   && !value->get_inner().empty())
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            {
              auto val = to_bool(value->get_inner());
              options.verifyCert = val;
            }
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          else if (field->get_tag("var") == "fingerprint" && value &&
                   !value->get_inner().empty())
            {
              options.trustedFingerprint = value->get_inner();
            }

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#endif // BOTAN_FOUND
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          else if (field->get_tag("var") == "pass" &&
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                   value && !value->get_inner().empty())
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            options.pass = value->get_inner();
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          else if (field->get_tag("var") == "after_connect_command" &&
                   value && !value->get_inner().empty())
            options.afterConnectionCommand = value->get_inner();
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          else if (field->get_tag("var") == "username" &&
                   value && !value->get_inner().empty())
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            {
              auto username = value->get_inner();
              // The username must not contain spaces
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              std::replace(username.begin(), username.end(), ' ', '_');
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              options.username = username;
            }
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          else if (field->get_tag("var") == "realname" &&
                   value && !value->get_inner().empty())
            options.realname = value->get_inner();
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          else if (field->get_tag("var") == "encoding_out" &&
                   value && !value->get_inner().empty())
            options.encodingOut = value->get_inner();

          else if (field->get_tag("var") == "encoding_in" &&
                   value && !value->get_inner().empty())
            options.encodingIn = value->get_inner();

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        }

      options.update();

      command_node.delete_all_children();
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      XmlSubNode note(command_node, "note");
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      note["type"] = "info";
      note.set_inner("Configuration successfully applied.");
      return;
    }
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  XmlSubNode error(command_node, ADHOC_NS":error");
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  error["type"] = "modify";
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  XmlSubNode condition(error, STANZA_NS":bad-request");
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  session.terminate();
}

void ConfigureIrcChannelStep1(XmppComponent&, AdhocSession& session, XmlNode& command_node)
{
  const Jid owner(session.get_owner_jid());
  const Jid target(session.get_target_jid());
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  const Iid iid(target.local, {});
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  auto options = Database::get_irc_channel_options_with_server_default(owner.local + "@" + owner.domain,
                                                                       iid.get_server(), iid.get_local());

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  XmlSubNode x(command_node, "jabber:x:data:x");
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  x["type"] = "form";
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  XmlSubNode title(x, "title");
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  title.set_inner("Configure the IRC channel "s + iid.get_local() + " on server "s + iid.get_server());
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  XmlSubNode instructions(x, "instructions");
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  instructions.set_inner("Edit the form, to configure the settings of the IRC channel "s + iid.get_local());

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  XmlSubNode encoding_out(x, "field");
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  encoding_out["var"] = "encoding_out";
  encoding_out["type"] = "text-single";
  encoding_out["desc"] = "The encoding used when sending messages to the IRC server. Defaults to the server's “out encoding” if unset for the channel";
  encoding_out["label"] = "Out encoding";
  if (!options.encodingOut.value().empty())
    {
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      XmlSubNode encoding_out_value(encoding_out, "value");
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      encoding_out_value.set_inner(options.encodingOut.value());
    }

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  XmlSubNode encoding_in(x, "field");
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  encoding_in["var"] = "encoding_in";
  encoding_in["type"] = "text-single";
  encoding_in["desc"] = "The encoding used to decode message received from the IRC server. Defaults to the server's “in encoding” if unset for the channel";
  encoding_in["label"] = "In encoding";
  if (!options.encodingIn.value().empty())
    {
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      XmlSubNode encoding_in_value(encoding_in, "value");
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      encoding_in_value.set_inner(options.encodingIn.value());
    }
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  XmlSubNode persistent(x, "field");
  persistent["var"] = "persistent";
  persistent["type"] = "boolean";
  persistent["desc"] = "If set to true, when all XMPP clients have left this channel, biboumi will stay idle in it, without sending a PART command.";
  persistent["label"] = "Persistent";
  {
    XmlSubNode value(persistent, "value");
    value.set_name("value");
    if (options.persistent.value())
      value.set_inner("true");
    else
      value.set_inner("false");
  }
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}

void ConfigureIrcChannelStep2(XmppComponent&, AdhocSession& session, XmlNode& command_node)
{
  const XmlNode* x = command_node.get_child("x", "jabber:x:data");
  if (x)
    {
      const Jid owner(session.get_owner_jid());
      const Jid target(session.get_target_jid());
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      const Iid iid(target.local, {});
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      auto options = Database::get_irc_channel_options(owner.local + "@" + owner.domain,
                                                       iid.get_server(), iid.get_local());
      for (const XmlNode* field: x->get_children("field", "jabber:x:data"))
        {
          const XmlNode* value = field->get_child("value", "jabber:x:data");

          if (field->get_tag("var") == "encoding_out" &&
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              value && !value->get_inner().empty())
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            options.encodingOut = value->get_inner();

          else if (field->get_tag("var") == "encoding_in" &&
                   value && !value->get_inner().empty())
            options.encodingIn = value->get_inner();
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          else if (field->get_tag("var") == "persistent" &&
                   value)
            options.persistent = to_bool(value->get_inner());
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        }

      options.update();

      command_node.delete_all_children();
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      XmlSubNode note(command_node, "note");
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      note["type"] = "info";
      note.set_inner("Configuration successfully applied.");
      return;
    }
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  XmlSubNode error(command_node, ADHOC_NS":error");
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  error["type"] = "modify";
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  XmlSubNode condition(error, STANZA_NS":bad-request");
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  session.terminate();
}
#endif  // USE_DATABASE
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void DisconnectUserFromServerStep1(XmppComponent& xmpp_component, AdhocSession& session, XmlNode& command_node)
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{
  const Jid owner(session.get_owner_jid());
  if (owner.bare() != Config::get("admin", ""))
    { // A non-admin is not allowed to disconnect other users, only
      // him/herself, so we just skip this step
      auto next_step = session.get_next_step();
      next_step(xmpp_component, session, command_node);
    }
  else
    { // Send a form to select the user to disconnect
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      auto& biboumi_component = dynamic_cast<BiboumiComponent&>(xmpp_component);
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      XmlSubNode x(command_node, "jabber:x:data:x");
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      x["type"] = "form";
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      XmlSubNode title(x, "title");
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      title.set_inner("Disconnect a user from selected IRC servers");
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      XmlSubNode instructions(x, "instructions");
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      instructions.set_inner("Choose a user JID");
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      XmlSubNode jids_field(x, "field");
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      jids_field["var"] = "jid";
      jids_field["type"] = "list-single";
      jids_field["label"] = "The JID to disconnect";
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      XmlSubNode required(jids_field, "required");
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      for (Bridge* bridge: biboumi_component.get_bridges())
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        {
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          XmlSubNode option(jids_field, "option");
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          option["label"] = bridge->get_jid();
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          XmlSubNode value(option, "value");
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          value.set_inner(bridge->get_jid());
        }
    }
}

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void DisconnectUserFromServerStep2(XmppComponent& xmpp_component, AdhocSession& session, XmlNode& command_node)
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{
  // If no JID is contained in the command node, it means we skipped the
  // previous stage, and the jid to disconnect is the executor's jid
  std::string jid_to_disconnect = session.get_owner_jid();

  if (const XmlNode* x = command_node.get_child("x", "jabber:x:data"))
    {
      for (const XmlNode* field: x->get_children("field", "jabber:x:data"))
        if (field->get_tag("var") == "jid")
          {
            if (const XmlNode* value = field->get_child("value", "jabber:x:data"))
              jid_to_disconnect = value->get_inner();
          }
    }

  // Save that JID for the last step
  session.vars["jid"] = jid_to_disconnect;

  // Send a data form to let the user choose which server to disconnect the
  // user from
  command_node.delete_all_children();
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  auto& biboumi_component = dynamic_cast<BiboumiComponent&>(xmpp_component);
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  XmlSubNode x(command_node, "jabber:x:data:x");
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  x["type"] = "form";
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  XmlSubNode title(x, "title");
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  title.set_inner("Disconnect a user from selected IRC servers");
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  XmlSubNode instructions(x, "instructions");
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  instructions.set_inner("Choose one or more servers to disconnect this JID from");
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  XmlSubNode jids_field(x, "field");
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  jids_field["var"] = "irc-servers";
  jids_field["type"] = "list-multi";
  jids_field["label"] = "The servers to disconnect from";
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  XmlSubNode required(jids_field, "required");
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  Bridge* bridge = biboumi_component.find_user_bridge(jid_to_disconnect);
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  if (!bridge || bridge->get_irc_clients().empty())
    {
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      XmlSubNode note(command_node, "note");
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      note["type"] = "info";
      note.set_inner("User "s + jid_to_disconnect + " is not connected to any IRC server.");
      session.terminate();
      return ;
    }

  for (const auto& pair: bridge->get_irc_clients())
    {
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      XmlSubNode option(jids_field, "option");
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      option["label"] = pair.first;
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      XmlSubNode value(option, "value");
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      value.set_inner(pair.first);
    }

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  XmlSubNode message_field(x, "field");
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  message_field["var"] = "quit-message";
  message_field["type"] = "text-single";
  message_field["label"] = "Quit message";
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  XmlSubNode message_value(message_field, "value");
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  message_value.set_inner("Killed by admin");
}

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void DisconnectUserFromServerStep3(XmppComponent& xmpp_component, AdhocSession& session, XmlNode& command_node)
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{
  const auto it = session.vars.find("jid");
  if (it == session.vars.end())
    return ;
  const auto jid_to_disconnect = it->second;

  std::vector<std::string> servers;
  std::string quit_message;

  if (const XmlNode* x = command_node.get_child("x", "jabber:x:data"))
    {
      for (const XmlNode* field: x->get_children("field", "jabber:x:data"))
        {
          if (field->get_tag("var") == "irc-servers")
            {
              for (const XmlNode* value: field->get_children("value", "jabber:x:data"))
                servers.push_back(value->get_inner());
            }
          else if (field->get_tag("var") == "quit-message")
            if (const XmlNode* value = field->get_child("value", "jabber:x:data"))
              quit_message = value->get_inner();
        }
    }

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  auto& biboumi_component = dynamic_cast<BiboumiComponent&>(xmpp_component);
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  Bridge* bridge = biboumi_component.find_user_bridge(jid_to_disconnect);
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  auto& clients = bridge->get_irc_clients();

  std::size_t number = 0;

  for (const auto& hostname: servers)
    {
      auto it = clients.find(hostname);
      if (it != clients.end())
        {
          it->second->on_error({"ERROR", {quit_message}});
          clients.erase(it);
          number++;
        }
    }
  command_node.delete_all_children();
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  XmlSubNode note(command_node, "note");
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  note["type"] = "info";
  std::string msg = jid_to_disconnect + " was disconnected from " + std::to_string(number) + " IRC server";
  if (number > 1)
    msg += "s";
  msg += ".";
  note.set_inner(msg);
}
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void GetIrcConnectionInfoStep1(XmppComponent& component, AdhocSession& session, XmlNode& command_node)
{
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  auto& biboumi_component = dynamic_cast<BiboumiComponent&>(component);
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  const Jid owner(session.get_owner_jid());
  const Jid target(session.get_target_jid());

  std::string message{};

  // As the function is exited, set the message in the response.
  utils::ScopeGuard sg([&message, &command_node]()
                       {
                         command_node.delete_all_children();
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                         XmlSubNode note(command_node, "note");
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                         note["type"] = "info";
                         note.set_inner(message);
                       });

  Bridge* bridge = biboumi_component.get_user_bridge(owner.bare());
  if (!bridge)
    {
      message = "You are not connected to anything.";
      return;
    }

  std::string hostname;
  if ((hostname = Config::get("fixed_irc_server", "")).empty())
    hostname = target.local;

  IrcClient* irc = bridge->find_irc_client(hostname);
  if (!irc || !irc->is_connected())
    {
      message = "You are not connected to the IRC server "s + hostname;
      return;
    }

  std::ostringstream ss;
  ss << "Connected to IRC server " << irc->get_hostname() << " on port " << irc->get_port();
  if (irc->is_using_tls())
    ss << " (using TLS)";
  const std::time_t now_c = std::chrono::system_clock::to_time_t(irc->connection_date);
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#ifdef HAS_PUT_TIME
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  ss << " since " << std::put_time(std::localtime(&now_c), "%F %T");
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#else
  constexpr std::size_t timestamp_size{10 + 1 + 8 + 1};
  char buf[timestamp_size] = {};
  const auto res = std::strftime(buf, timestamp_size, "%F %T", std::localtime(&now_c));
  if (res > 0)
    ss << " since " << buf;
#endif
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  ss << " (" << std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now() - irc->connection_date).count() << " seconds ago).";

  for (const auto& it: bridge->resources_in_chan)
    {
      const auto& channel_key = it.first;
      const auto& irc_hostname = std::get<1>(channel_key);
      const auto& resources = it.second;

      if (irc_hostname == irc->get_hostname() && !resources.empty())
        {
          const auto& channel_name = std::get<0>(channel_key);
          ss << "\n" << channel_name << " from " << resources.size() << " resource" << (resources.size() > 1 ? "s": "") << ": ";
          for (const auto& resource: resources)
            ss << resource << " ";
        }
    }

  message = ss.str();
}