3c7d6fcce7
Also fix up some return values and stuff to use bool (or void if nothing). I just did it whilst I was here. According to jilles, the return value used to signify whether or not the client had exited. This was error-prone and was fixed a long, long time ago, but the return value was left int for historical reasons. Since the return type is not used (and has no clear use case anyway), it's safe to just get rid of it.
538 lines
16 KiB
C
538 lines
16 KiB
C
/* modules/m_xline.c
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*
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* Copyright (C) 2002-2003 Lee Hardy <lee@leeh.co.uk>
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* Copyright (C) 2002-2005 ircd-ratbox development team
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1.Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2.Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3.The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "stdinc.h"
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#include "send.h"
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#include "channel.h"
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#include "client.h"
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#include "common.h"
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#include "config.h"
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#include "class.h"
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#include "ircd.h"
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#include "numeric.h"
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#include "logger.h"
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#include "s_serv.h"
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#include "whowas.h"
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#include "match.h"
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#include "hash.h"
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#include "msg.h"
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#include "parse.h"
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#include "modules.h"
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#include "s_conf.h"
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#include "s_newconf.h"
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#include "reject.h"
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#include "bandbi.h"
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#include "operhash.h"
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static const char xline_desc[] =
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"Provides management of GECOS bans via (UN)XLINE command";
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static void mo_xline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
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static void ms_xline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
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static void me_xline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
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static void mo_unxline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc,
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const char *parv[]);
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static void ms_unxline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc,
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const char *parv[]);
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static void me_unxline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc,
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const char *parv[]);
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static bool valid_xline(struct Client *, const char *, const char *);
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static void apply_xline(struct Client *client_p, const char *name,
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const char *reason, int temp_time, int propagated);
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static void propagate_xline(struct Client *source_p, const char *target,
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int temp_time, const char *name, const char *type, const char *reason);
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static void cluster_xline(struct Client *source_p, int temp_time,
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const char *name, const char *reason);
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static void handle_remote_xline(struct Client *source_p, int temp_time,
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const char *name, const char *reason);
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static void handle_remote_unxline(struct Client *source_p, const char *name);
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static void remove_xline(struct Client *source_p, const char *name,
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int propagated);
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struct Message xline_msgtab = {
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"XLINE", 0, 0, 0, 0,
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{mg_unreg, mg_not_oper, {ms_xline, 5}, {ms_xline, 5}, {me_xline, 5}, {mo_xline, 3}}
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};
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struct Message unxline_msgtab = {
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"UNXLINE", 0, 0, 0, 0,
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{mg_unreg, mg_not_oper, {ms_unxline, 3}, {ms_unxline, 3}, {me_unxline, 2}, {mo_unxline, 2}}
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};
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mapi_clist_av1 xline_clist[] = { &xline_msgtab, &unxline_msgtab, NULL };
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DECLARE_MODULE_AV2(xline, NULL, NULL, xline_clist, NULL, NULL, NULL, NULL, xline_desc);
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/* m_xline()
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*
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* parv[1] - thing to xline
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* parv[2] - optional type/reason
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* parv[3] - reason
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*/
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static void
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mo_xline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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struct ConfItem *aconf;
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const char *name;
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const char *reason;
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const char *target_server = NULL;
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int temp_time;
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int loc = 1;
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int propagated = ConfigFileEntry.use_propagated_bans;
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if(!IsOperXline(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "xline");
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return;
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}
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if((temp_time = valid_temp_time(parv[loc])) >= 0)
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loc++;
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/* we just set temp_time to -1! */
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else
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temp_time = 0;
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name = parv[loc];
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loc++;
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/* XLINE <gecos> ON <server> :<reason> */
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if(parc >= loc + 2 && !irccmp(parv[loc], "ON"))
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{
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if(!IsOperRemoteBan(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS),
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me.name, source_p->name, "remoteban");
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return;
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}
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target_server = parv[loc + 1];
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loc += 2;
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}
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if(parc <= loc || EmptyString(parv[loc]))
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{
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sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
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me.name, source_p->name, "XLINE");
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return;
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}
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reason = parv[loc];
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if(target_server != NULL)
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{
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propagate_xline(source_p, target_server, temp_time, name, "2", reason);
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if(!match(target_server, me.name))
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return;
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/* Set as local-only. */
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propagated = 0;
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}
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else if(!propagated && rb_dlink_list_length(&cluster_conf_list) > 0)
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cluster_xline(source_p, temp_time, name, reason);
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if((aconf = find_xline_mask(name)) != NULL)
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{
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sendto_one(source_p, ":%s NOTICE %s :[%s] already X-Lined by [%s] - %s",
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me.name, source_p->name, name, aconf->host, aconf->passwd);
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return;
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}
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if(!valid_xline(source_p, name, reason))
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return;
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if(propagated && temp_time == 0)
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{
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sendto_one_notice(source_p, ":Cannot set a permanent global ban");
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return;
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}
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apply_xline(source_p, name, reason, temp_time, propagated);
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}
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/* ms_xline()
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*
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* handles a remote xline
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*/
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static void
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ms_xline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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/* parv[0] parv[1] parv[2] parv[3] parv[4]
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* oper target serv xline type reason
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*/
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propagate_xline(source_p, parv[1], 0, parv[2], parv[3], parv[4]);
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if(!IsPerson(source_p))
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return;
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/* destined for me? */
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if(!match(parv[1], me.name))
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return;
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handle_remote_xline(source_p, 0, parv[2], parv[4]);
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}
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static void
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me_xline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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/* time name type :reason */
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if(!IsPerson(source_p))
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return;
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handle_remote_xline(source_p, atoi(parv[1]), parv[2], parv[4]);
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}
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static void
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handle_remote_xline(struct Client *source_p, int temp_time, const char *name, const char *reason)
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{
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struct ConfItem *aconf;
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if(!find_shared_conf(source_p->username, source_p->host,
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source_p->servptr->name,
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(temp_time > 0) ? SHARED_TXLINE : SHARED_PXLINE))
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return;
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if(!valid_xline(source_p, name, reason))
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return;
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/* already xlined */
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if((aconf = find_xline_mask(name)) != NULL)
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{
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sendto_one_notice(source_p, ":[%s] already X-Lined by [%s] - %s", name, aconf->host,
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aconf->passwd);
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return;
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}
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apply_xline(source_p, name, reason, temp_time, 0);
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}
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/* valid_xline()
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*
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* inputs - client xlining, gecos, reason and whether to warn
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* outputs -
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* side effects - checks the xline for validity, erroring if needed
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*/
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static bool
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valid_xline(struct Client *source_p, const char *gecos, const char *reason)
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{
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if(EmptyString(reason))
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{
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sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
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get_id(&me, source_p), get_id(source_p, source_p), "XLINE");
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return false;
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}
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if(!valid_wild_card_simple(gecos))
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{
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sendto_one_notice(source_p,
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":Please include at least %d non-wildcard "
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"characters with the xline",
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ConfigFileEntry.min_nonwildcard_simple);
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return false;
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}
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return true;
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}
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void
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apply_xline(struct Client *source_p, const char *name, const char *reason, int temp_time, int propagated)
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{
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struct ConfItem *aconf;
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aconf = make_conf();
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aconf->status = CONF_XLINE;
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aconf->created = rb_current_time();
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aconf->host = rb_strdup(name);
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aconf->passwd = rb_strdup(reason);
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collapse(aconf->host);
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aconf->info.oper = operhash_add(get_oper_name(source_p));
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if(propagated)
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{
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aconf->flags |= CONF_FLAGS_MYOPER | CONF_FLAGS_TEMPORARY;
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aconf->hold = rb_current_time() + temp_time;
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aconf->lifetime = aconf->hold;
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replace_old_ban(aconf);
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rb_dlinkAddAlloc(aconf, &prop_bans);
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sendto_realops_snomask(SNO_GENERAL, L_ALL,
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"%s added global %d min. X-Line for [%s] [%s]",
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get_oper_name(source_p), temp_time / 60,
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aconf->host, reason);
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ilog(L_KLINE, "X %s %d %s %s",
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get_oper_name(source_p), temp_time / 60, name, reason);
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sendto_one_notice(source_p, ":Added global %d min. X-Line [%s]",
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temp_time / 60, aconf->host);
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sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS,
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":%s BAN X * %s %lu %d %d * :%s",
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source_p->id, aconf->host,
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(unsigned long)aconf->created,
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(int)(aconf->hold - aconf->created),
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(int)(aconf->lifetime - aconf->created),
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reason);
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}
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else if(temp_time > 0)
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{
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aconf->hold = rb_current_time() + temp_time;
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sendto_realops_snomask(SNO_GENERAL, L_ALL,
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"%s added temporary %d min. X-Line for [%s] [%s]",
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get_oper_name(source_p), temp_time / 60,
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aconf->host, reason);
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ilog(L_KLINE, "X %s %d %s %s",
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get_oper_name(source_p), temp_time / 60, name, reason);
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sendto_one_notice(source_p, ":Added temporary %d min. X-Line [%s]",
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temp_time / 60, aconf->host);
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}
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else
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{
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sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s added X-Line for [%s] [%s]",
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get_oper_name(source_p), aconf->host, aconf->passwd);
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sendto_one_notice(source_p, ":Added X-Line for [%s] [%s]",
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aconf->host, aconf->passwd);
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bandb_add(BANDB_XLINE, source_p, aconf->host, NULL, aconf->passwd, NULL, 0);
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ilog(L_KLINE, "X %s 0 %s %s", get_oper_name(source_p), name, aconf->passwd);
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}
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rb_dlinkAddAlloc(aconf, &xline_conf_list);
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check_xlines();
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}
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static void
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propagate_xline(struct Client *source_p, const char *target,
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int temp_time, const char *name, const char *type, const char *reason)
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{
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if(!temp_time)
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{
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sendto_match_servs(source_p, target, CAP_CLUSTER, NOCAPS,
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"XLINE %s %s %s :%s", target, name, type, reason);
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sendto_match_servs(source_p, target, CAP_ENCAP, CAP_CLUSTER,
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"ENCAP %s XLINE %d %s 2 :%s", target, temp_time, name, reason);
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}
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else
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sendto_match_servs(source_p, target, CAP_ENCAP, NOCAPS,
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"ENCAP %s XLINE %d %s %s :%s",
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target, temp_time, name, type, reason);
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}
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static void
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cluster_xline(struct Client *source_p, int temp_time, const char *name, const char *reason)
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{
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struct remote_conf *shared_p;
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rb_dlink_node *ptr;
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RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
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{
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shared_p = ptr->data;
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/* old protocol cant handle temps, and we dont really want
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* to convert them to perm.. --fl
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*/
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if(!temp_time)
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{
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if(!(shared_p->flags & SHARED_PXLINE))
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continue;
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sendto_match_servs(source_p, shared_p->server, CAP_CLUSTER, NOCAPS,
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"XLINE %s %s 2 :%s", shared_p->server, name, reason);
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sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, CAP_CLUSTER,
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"ENCAP %s XLINE 0 %s 2 :%s",
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shared_p->server, name, reason);
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}
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else if(shared_p->flags & SHARED_TXLINE)
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sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, NOCAPS,
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"ENCAP %s XLINE %d %s 2 :%s",
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shared_p->server, temp_time, name, reason);
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}
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}
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/* mo_unxline()
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*
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* parv[1] - thing to unxline
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*/
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static void
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mo_unxline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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int propagated = 1;
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if(!IsOperXline(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "xline");
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return;
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}
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if(parc == 4 && !(irccmp(parv[2], "ON")))
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{
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if(!IsOperRemoteBan(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS),
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me.name, source_p->name, "remoteban");
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return;
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}
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propagate_generic(source_p, "UNXLINE", parv[3], CAP_CLUSTER, "%s", parv[1]);
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if(match(parv[3], me.name) == 0)
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return;
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propagated = 0;
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}
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/* cluster{} moved to remove_xline */
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remove_xline(source_p, parv[1], propagated);
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}
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/* ms_unxline()
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*
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* handles a remote unxline
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*/
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static void
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ms_unxline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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/* parv[0] parv[1] parv[2]
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* oper target server gecos
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*/
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propagate_generic(source_p, "UNXLINE", parv[1], CAP_CLUSTER, "%s", parv[2]);
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if(!match(parv[1], me.name))
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return;
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if(!IsPerson(source_p))
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return;
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handle_remote_unxline(source_p, parv[2]);
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}
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static void
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me_unxline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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/* name */
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if(!IsPerson(source_p))
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return;
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handle_remote_unxline(source_p, parv[1]);
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}
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static void
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handle_remote_unxline(struct Client *source_p, const char *name)
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{
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if(!find_shared_conf(source_p->username, source_p->host,
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source_p->servptr->name, SHARED_UNXLINE))
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return;
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remove_xline(source_p, name, 0);
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}
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static void
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remove_xline(struct Client *source_p, const char *name, int propagated)
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{
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struct ConfItem *aconf;
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rb_dlink_node *ptr;
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time_t now;
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RB_DLINK_FOREACH(ptr, xline_conf_list.head)
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{
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aconf = ptr->data;
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if(!irccmp(aconf->host, name))
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{
|
|
if(aconf->lifetime)
|
|
{
|
|
if(!propagated)
|
|
{
|
|
sendto_one_notice(source_p, ":Cannot remove global X-Line %s on specific servers", name);
|
|
return;
|
|
}
|
|
ptr = rb_dlinkFind(aconf, &prop_bans);
|
|
if(ptr == NULL)
|
|
return;
|
|
sendto_one_notice(source_p, ":X-Line for [%s] is removed", name);
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"%s has removed the global X-Line for: [%s]",
|
|
get_oper_name(source_p), name);
|
|
ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), name);
|
|
now = rb_current_time();
|
|
if(aconf->created < now)
|
|
aconf->created = now;
|
|
else
|
|
aconf->created++;
|
|
aconf->hold = aconf->created;
|
|
operhash_delete(aconf->info.oper);
|
|
aconf->info.oper = operhash_add(get_oper_name(source_p));
|
|
aconf->flags |= CONF_FLAGS_MYOPER | CONF_FLAGS_TEMPORARY;
|
|
sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS,
|
|
":%s BAN X * %s %lu %d %d * :*",
|
|
source_p->id, aconf->host,
|
|
(unsigned long)aconf->created,
|
|
0,
|
|
(int)(aconf->lifetime - aconf->created));
|
|
remove_reject_mask(aconf->host, NULL);
|
|
deactivate_conf(aconf, ptr, now);
|
|
return;
|
|
}
|
|
else if(propagated && rb_dlink_list_length(&cluster_conf_list))
|
|
cluster_generic(source_p, "UNXLINE", SHARED_UNXLINE, CAP_CLUSTER, "%s", name);
|
|
if(!aconf->hold)
|
|
{
|
|
bandb_del(BANDB_XLINE, aconf->host, NULL);
|
|
|
|
sendto_one_notice(source_p, ":X-Line for [%s] is removed", aconf->host);
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"%s has removed the X-Line for: [%s]",
|
|
get_oper_name(source_p), aconf->host);
|
|
ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), aconf->host);
|
|
}
|
|
else
|
|
{
|
|
sendto_one_notice(source_p, ":X-Line for [%s] is removed", name);
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"%s has removed the temporary X-Line for: [%s]",
|
|
get_oper_name(source_p), name);
|
|
ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), name);
|
|
}
|
|
|
|
remove_reject_mask(aconf->host, NULL);
|
|
free_conf(aconf);
|
|
rb_dlinkDestroy(ptr, &xline_conf_list);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if(propagated && rb_dlink_list_length(&cluster_conf_list))
|
|
cluster_generic(source_p, "UNXLINE", SHARED_UNXLINE, CAP_CLUSTER, "%s", name);
|
|
|
|
sendto_one_notice(source_p, ":No X-Line for %s", name);
|
|
}
|