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/*
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
*
* Copyright (c) 1997-2018 ircd-hybrid development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
/*! \file m_links.c
* \brief Includes required functions for processing the LINKS command.
* \version $Id: m_links.c 8430 2018-03-27 18:48:40Z michael $
*/
#include "stdinc.h"
#include "client.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "server.h"
#include "send.h"
#include "conf.h"
#include "parse.h"
#include "modules.h"
/*! \brief Shows a list of linked servers and notifies irc-operators
* about the LINKS request
*
* \param source_p Pointer to client to report to
*/
static void
do_links(struct Client *source_p, int parc, char *parv[])
{
dlink_node *node;
sendto_realops_flags(UMODE_SPY, L_ALL, SEND_NOTICE,
"LINKS requested by %s (%s@%s) [%s]",
source_p->name,
source_p->username, source_p->host,
source_p->servptr->name);
if (HasUMode(source_p, UMODE_OPER) || !ConfigServerHide.flatten_links)
{
const char *mask = (parc > 2 ? parv[2] : parv[1]);
DLINK_FOREACH(node, global_server_list.head)
{
const struct Client *target_p = node->data;
/* Skip hidden servers */
if (IsHidden(target_p))
if (!HasUMode(source_p, UMODE_OPER))
continue;
if (HasFlag(target_p, FLAGS_SERVICE) && ConfigServerHide.hide_services)
if (!HasUMode(source_p, UMODE_OPER))
continue;
if (!EmptyString(mask) && match(mask, target_p->name))
continue;
/*
* We just send the reply, as if they are here there's either no SHIDE,
* or they're an oper.
*/
sendto_one_numeric(source_p, &me, RPL_LINKS,
target_p->name, target_p->servptr->name,
target_p->hopcount, target_p->info);
}
sendto_one_numeric(source_p, &me, RPL_ENDOFLINKS,
EmptyString(mask) ? "*" : mask);
}
else
{
/*
* Print our own info so at least it looks like a normal links, then
* print out the file (which may or may not be empty).
*/
sendto_one_numeric(source_p, &me, RPL_LINKS, me.name, me.name, 0, me.info);
DLINK_FOREACH(node, flatten_links.head)
sendto_one_numeric(source_p, &me, RPL_LINKS | SND_EXPLICIT, "%s", node->data);
sendto_one_numeric(source_p, &me, RPL_ENDOFLINKS, "*");
}
}
static int
mo_links(struct Client *source_p, int parc, char *parv[])
{
if (parc > 2)
if (!ConfigServerHide.disable_remote_commands || HasUMode(source_p, UMODE_OPER))
if (server_hunt(source_p, ":%s LINKS %s :%s", 1, parc, parv)->ret != HUNTED_ISME)
return 0;
do_links(source_p, parc, parv);
return 0;
}
/*! \brief LINKS command handler
*
* \param source_p Pointer to allocated Client struct from which the message
* originally comes from. This can be a local or remote client.
* \param parc Integer holding the number of supplied arguments.
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
* pointers.
* \note Valid arguments for this command are:
* - parv[0] = command
* - parv[1] = servername mask
* or
* - parv[0] = command
* - parv[1] = server to query
* - parv[2] = servername mask
*/
static int
m_links(struct Client *source_p, int parc, char *parv[])
{
static uintmax_t last_used = 0;
if ((last_used + ConfigGeneral.pace_wait) > CurrentTime)
{
sendto_one_numeric(source_p, &me, RPL_LOAD2HI, "LINKS");
return 0;
}
last_used = CurrentTime;
if (!ConfigServerHide.flatten_links)
return mo_links(source_p, parc, parv);
do_links(source_p, parc, parv);
return 0;
}
/*! \brief LINKS command handler
*
* \param source_p Pointer to allocated Client struct from which the message
* originally comes from. This can be a local or remote client.
* \param parc Integer holding the number of supplied arguments.
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
* pointers.
* \note Valid arguments for this command are:
* - parv[0] = command
* - parv[1] = servername mask
* or
* - parv[0] = command
* - parv[1] = server to query
* - parv[2] = servername mask
*/
static int
ms_links(struct Client *source_p, int parc, char *parv[])
{
if (server_hunt(source_p, ":%s LINKS %s :%s", 1, parc, parv)->ret != HUNTED_ISME)
return 0;
return m_links(source_p, parc, parv);
}
static struct Message links_msgtab =
{
.cmd = "LINKS",
.args_max = MAXPARA,
.handlers[UNREGISTERED_HANDLER] = m_unregistered,
.handlers[CLIENT_HANDLER] = m_links,
.handlers[SERVER_HANDLER] = ms_links,
.handlers[ENCAP_HANDLER] = m_ignore,
.handlers[OPER_HANDLER] = mo_links
};
static void
module_init(void)
{
mod_add_cmd(&links_msgtab);
}
static void
module_exit(void)
{
mod_del_cmd(&links_msgtab);
}
struct module module_entry =
{
.version = "$Revision: 8430 $",
.modinit = module_init,
.modexit = module_exit,
};
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