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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_undline.c
* \brief Includes required functions for processing the UNDLINE command.
* \version $Id: m_undline.c 8280 2018-02-20 19:30:33Z michael $
*/
#include "stdinc.h"
#include "list.h"
#include "client.h"
#include "irc_string.h"
#include "conf.h"
#include "conf_cluster.h"
#include "conf_shared.h"
#include "ircd.h"
#include "hostmask.h"
#include "numeric.h"
#include "log.h"
#include "misc.h"
#include "send.h"
#include "server_capab.h"
#include "parse.h"
#include "modules.h"
#include "memory.h"
/* static int remove_tdline_match(const char *host, const char *user)
* Input: An ip to undline.
* Output: returns YES on success, NO if no tdline removed.
* Side effects: Any matching tdlines are removed.
*/
static int
dline_remove(const char *host)
{
struct irc_ssaddr iphost, *piphost;
struct MaskItem *conf;
int t = 0;
int aftype = 0;
if ((t = parse_netmask(host, &iphost, NULL)) != HM_HOST)
{
if (t == HM_IPV6)
aftype = AF_INET6;
else
aftype = AF_INET;
piphost = &iphost;
}
else
piphost = NULL;
if ((conf = find_conf_by_address(host, piphost, CONF_DLINE, aftype, NULL, NULL, 0)))
{
if (IsConfDatabase(conf))
{
delete_one_address_conf(host, conf);
return 1;
}
}
return 0;
}
static void
dline_remove_and_notify(struct Client *source_p, const char *host)
{
if (dline_remove(host))
{
if (IsClient(source_p))
sendto_one_notice(source_p, &me, ":D-Line for [%s] is removed", host);
sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
"%s has removed the D-Line for: [%s]",
get_oper_name(source_p), host);
ilog(LOG_TYPE_DLINE, "%s removed D-Line for [%s]",
get_oper_name(source_p), host);
}
else if (IsClient(source_p))
sendto_one_notice(source_p, &me, ":No D-Line for [%s] found", host);
}
/*! \brief UNDLINE 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] = IP address
* - parv[2] = "ON"
* - parv[3] = target server
*/
static int
mo_undline(struct Client *source_p, int parc, char *parv[])
{
char *addr = NULL;
char *target_server = NULL;
if (!HasOFlag(source_p, OPER_FLAG_UNDLINE))
{
sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "undline");
return 0;
}
if (parc < 2 || EmptyString(parv[1]))
{
sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "UNDLINE");
return 0;
}
if (!parse_aline("UNDLINE", source_p, parc, parv, &addr,
NULL, NULL, &target_server, NULL))
return 0;
if (target_server)
{
sendto_match_servs(source_p, target_server, CAPAB_UNDLN,
"UNDLINE %s %s", target_server, addr);
/* Allow ON to apply local undline as well if it matches */
if (match(target_server, me.name))
return 0;
}
else
cluster_distribute(source_p, "UNDLINE", CAPAB_UNDLN, CLUSTER_UNDLINE, "%s", addr);
dline_remove_and_notify(source_p, addr);
return 0;
}
/*! \brief UNDLINE 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] = target server mask
* - parv[2] = IP address
*/
static int
ms_undline(struct Client *source_p, int parc, char *parv[])
{
const char *addr = parv[2];
if (parc != 3 || EmptyString(parv[2]))
return 0;
sendto_match_servs(source_p, parv[1], CAPAB_UNDLN, "UNDLINE %s %s",
parv[1], parv[2]);
if (match(parv[1], me.name))
return 0;
if (HasFlag(source_p, FLAGS_SERVICE) ||
shared_find(SHARED_UNDLINE, source_p->servptr->name,
source_p->username, source_p->host))
dline_remove_and_notify(source_p, addr);
return 0;
}
static struct Message undline_msgtab =
{
.cmd = "UNDLINE",
.args_min = 2,
.args_max = MAXPARA,
.handlers[UNREGISTERED_HANDLER] = m_unregistered,
.handlers[CLIENT_HANDLER] = m_not_oper,
.handlers[SERVER_HANDLER] = ms_undline,
.handlers[ENCAP_HANDLER] = m_ignore,
.handlers[OPER_HANDLER] = mo_undline
};
static void
module_init(void)
{
mod_add_cmd(&undline_msgtab);
capab_add("UNDLN", CAPAB_UNDLN);
}
static void
module_exit(void)
{
mod_del_cmd(&undline_msgtab);
capab_del("UNDLN");
}
struct module module_entry =
{
.version = "$Revision: 8280 $",
.modinit = module_init,
.modexit = module_exit,
};
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