420 lines
10 KiB
C
420 lines
10 KiB
C
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/*
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* ircd-ratbox: A slightly useful ircd.
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* m_dline.c: Bans/unbans a user.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2012 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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* USA
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*
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* $Id: m_dline.c 27371 2012-03-16 05:33:15Z dubkat $
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*/
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#include "stdinc.h"
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#include "struct.h"
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#include "client.h"
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#include "match.h"
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#include "reject.h"
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#include "ircd.h"
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#include "hostmask.h"
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#include "numeric.h"
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#include "s_conf.h"
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#include "s_newconf.h"
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#include "s_log.h"
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#include "send.h"
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#include "parse.h"
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#include "modules.h"
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#include "operhash.h"
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#include "bandbi.h"
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static int mo_dline(struct Client *, struct Client *, int, const char **);
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static int mo_admindline(struct Client *, struct Client *, int, const char **);
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static int mo_undline(struct Client *, struct Client *, int, const char **);
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struct Message dline_msgtab = {
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"DLINE", 0, 0, 0, MFLG_SLOW,
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{mg_unreg, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_dline, 2}}
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};
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struct Message admindline_msgtab = {
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"ADMINDLINE", 0, 0, 0, MFLG_SLOW,
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{mg_unreg, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_admindline, 3}}
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};
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struct Message undline_msgtab = {
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"UNDLINE", 0, 0, 0, MFLG_SLOW,
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{mg_unreg, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_undline, 2}}
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};
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mapi_clist_av1 dline_clist[] = { &dline_msgtab, &admindline_msgtab, &undline_msgtab, NULL };
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DECLARE_MODULE_AV1(dline, NULL, NULL, dline_clist, NULL, NULL, "$Revision: 27371 $");
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static int valid_dline(struct Client *source_p, const char *dlhost);
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static int already_placed_dline(struct Client *source_p, const char *dlhost);
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static void set_dline(struct Client *source_p, const char *dlhost,
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const char *lreason, int tkline_time, int admin);
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static void check_dlines(void);
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/* mo_dline()
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*
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* parv[1] - dline to add
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* parv[2] - reason
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*/
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static int
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mo_dline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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char def[] = "No Reason";
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const char *dlhost;
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const char *reason = def;
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int tdline_time = 0;
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int loc = 1;
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if(!IsOperK(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "kline");
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return 0;
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}
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if((tdline_time = valid_temp_time(parv[loc])) >= 0)
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loc++;
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if(parc < loc + 1)
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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, "DLINE");
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return 0;
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}
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dlhost = parv[loc];
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loc++;
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if(!valid_dline(source_p, dlhost))
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return 0;
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/* reason */
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if((parc >= loc + 1) && !EmptyString(parv[loc]))
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reason = parv[loc];
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if(!already_placed_dline(source_p, dlhost))
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return 0;
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set_dline(source_p, dlhost, reason, tdline_time, 0);
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check_dlines();
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return 0;
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}
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static int
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mo_admindline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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if(!IsOperK(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "kline");
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return 0;
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}
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if(!IsOperAdmin(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "admin");
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return 0;
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}
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if(!valid_dline(source_p, parv[1]))
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return 0;
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if(!already_placed_dline(source_p, parv[1]))
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return 0;
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set_dline(source_p, parv[1], parv[2], 0, 1);
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check_dlines();
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return 0;
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}
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/* mo_undline()
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*
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* parv[1] = dline to remove
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*/
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static int
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mo_undline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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struct rb_sockaddr_storage daddr;
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struct ConfItem *aconf;
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int b, ty;
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const char *cidr = parv[1];
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const char *host;
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if(!IsOperUnkline(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "unkline");
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return 0;
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}
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if((ty = parse_netmask(cidr, (struct sockaddr *)&daddr, &b)) == HM_HOST)
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{
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sendto_one_notice(source_p, ":Invalid D-Line");
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return 0;
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}
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aconf = find_dline_exact((struct sockaddr *)&daddr, b);
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if(aconf == NULL)
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{
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sendto_one_notice(source_p, ":No D-Line for %s", cidr);
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return 0;
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}
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if(IsConfLocked(aconf) && !IsOperAdmin(source_p))
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{
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sendto_one_notice(source_p, ":Cannot remove locked D-Line %s", cidr);
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return 0;
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}
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host = LOCAL_COPY(aconf->host);
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remove_dline(aconf);
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if(!(aconf->flags & CONF_FLAGS_TEMPORARY))
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{
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bandb_del(BANDB_DLINE, host, NULL);
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sendto_one_notice(source_p, ":D-Line for [%s] is removed", host);
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sendto_realops_flags(UMODE_ALL, L_ALL, "%s has removed the D-Line for: [%s]",
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get_oper_name(source_p), host);
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}
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else
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{
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rb_dlink_list *list;
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list = &temp_dlines[aconf->port];
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rb_dlinkFindDestroy(aconf, list);
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sendto_one_notice(source_p, ":Un-dlined [%s] from temporary D-lines", host);
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sendto_realops_flags(UMODE_ALL, L_ALL,
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"%s has removed the temporary D-Line for: [%s]",
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get_oper_name(source_p), host);
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return 0;
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}
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ilog(L_KLINE, "UD %s %s", get_oper_name(source_p), host);
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return 0;
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}
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static int
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valid_dline(struct Client *source_p, const char *dlhost)
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{
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static char cidr_form_host[HOSTLEN + 1];
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int bits;
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rb_strlcpy(cidr_form_host, dlhost, sizeof(cidr_form_host));
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if(!parse_netmask(dlhost, NULL, &bits))
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{
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sendto_one_notice(source_p, ":Invalid D-Line");
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return 0;
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}
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if(IsOperAdmin(source_p))
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{
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if(bits < 8)
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{
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sendto_one_notice(source_p,
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":For safety, bitmasks less than 8 require db access.");
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return 0;
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}
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}
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else
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{
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if(bits < 16)
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{
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sendto_one_notice(source_p,
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":Dline bitmasks less than 16 are for admins only.");
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return 0;
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}
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}
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return 1;
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}
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static int
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already_placed_dline(struct Client *source_p, const char *dlhost)
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{
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if(ConfigFileEntry.non_redundant_klines)
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{
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struct ConfItem *aconf;
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struct rb_sockaddr_storage daddr;
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const char *creason;
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int t = AF_INET, ty, b;
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ty = parse_netmask(dlhost, (struct sockaddr *)&daddr, &b);
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#ifdef RB_IPV6
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if(ty == HM_IPV6)
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t = AF_INET6;
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else
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#endif
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t = AF_INET;
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if((aconf = find_dline((struct sockaddr *)&daddr)) != NULL)
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{
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int bx;
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parse_netmask(aconf->host, NULL, &bx);
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if(b >= bx)
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{
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creason = aconf->passwd ? aconf->passwd : "<No Reason>";
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if(IsConfExemptKline(aconf))
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sendto_one_notice(source_p,
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":[%s] is (E)d-lined by [%s] - %s",
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dlhost, aconf->host, creason);
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else
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sendto_one_notice(source_p,
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":[%s] already D-lined by [%s] - %s",
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dlhost, aconf->host, creason);
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return 0;
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}
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}
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}
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return 1;
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}
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static void
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set_dline(struct Client *source_p, const char *dlhost, const char *lreason, int tdline_time,
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int admin)
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{
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struct ConfItem *aconf;
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char dlbuffer[IRCD_BUFSIZE];
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const char *current_date;
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const char *oper;
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char *reason;
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char *oper_reason;
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reason = LOCAL_COPY_N(lreason, REASONLEN);
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rb_set_time();
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current_date = smalldate(rb_current_time());
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aconf = make_conf();
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aconf->status = CONF_DLINE;
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aconf->host = rb_strdup(dlhost);
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oper = get_oper_name(source_p);
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aconf->info.oper = operhash_add(oper);
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if(admin)
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aconf->flags |= CONF_FLAGS_LOCKED;
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/* Look for an oper reason */
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if((oper_reason = strchr(reason, '|')) != NULL)
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{
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*oper_reason = '\0';
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oper_reason++;
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if(!EmptyString(oper_reason))
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aconf->spasswd = rb_strdup(oper_reason);
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}
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if(tdline_time > 0)
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{
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rb_snprintf(dlbuffer, sizeof(dlbuffer),
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"Temporary D-line %d min. - %s (%s)",
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(int)(tdline_time / 60), reason, current_date);
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aconf->passwd = rb_strdup(dlbuffer);
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aconf->hold = rb_current_time() + tdline_time;
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add_temp_dline(aconf);
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sendto_realops_flags(UMODE_ALL, L_ALL,
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"%s added temporary %d min. D-Line for [%s] [%s]",
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aconf->info.oper, tdline_time / 60,
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aconf->host, make_ban_reason(reason, oper_reason));
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ilog(L_KLINE, "D %s %d %s %s",
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aconf->info.oper, tdline_time / 60, aconf->host, make_ban_reason(reason,
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oper_reason));
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sendto_one_notice(source_p, ":Added temporary %d min. D-Line for [%s]",
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tdline_time / 60, aconf->host);
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}
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else
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{
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rb_snprintf(dlbuffer, sizeof(dlbuffer), "%s (%s)", reason, current_date);
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aconf->passwd = rb_strdup(dlbuffer);
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add_dline(aconf);
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sendto_realops_flags(UMODE_ALL, L_ALL,
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"%s added D-Line for [%s] [%s]",
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aconf->info.oper, aconf->host, make_ban_reason(reason,
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oper_reason));
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ilog(L_KLINE, "D %s 0 %s %s", aconf->info.oper, aconf->host,
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make_ban_reason(reason, oper_reason));
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sendto_one_notice(source_p, ":Added %s [%s]", admin ? "Admin D-Line" : "D-Line",
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aconf->host);
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bandb_add(BANDB_DLINE, source_p, aconf->host, NULL,
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reason, EmptyString(aconf->spasswd) ? NULL : aconf->spasswd, admin);
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}
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}
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||
|
|
/* check_dlines()
|
||
|
|
*
|
||
|
|
* inputs -
|
||
|
|
* outputs -
|
||
|
|
* side effects - all clients will be checked for dlines
|
||
|
|
*/
|
||
|
|
static void
|
||
|
|
check_dlines(void)
|
||
|
|
{
|
||
|
|
struct Client *client_p;
|
||
|
|
struct ConfItem *aconf;
|
||
|
|
rb_dlink_node *ptr;
|
||
|
|
rb_dlink_node *next_ptr;
|
||
|
|
|
||
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, lclient_list.head)
|
||
|
|
{
|
||
|
|
client_p = ptr->data;
|
||
|
|
|
||
|
|
if(IsMe(client_p))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip)) != NULL)
|
||
|
|
{
|
||
|
|
if(aconf->status & CONF_EXEMPTDLINE)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
sendto_realops_flags(UMODE_ALL, L_ALL,
|
||
|
|
"DLINE active for %s",
|
||
|
|
get_client_name(client_p, HIDE_IP));
|
||
|
|
|
||
|
|
notify_banned_client(client_p, aconf, D_LINED);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* dlines need to be checked against unknowns too */
|
||
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, unknown_list.head)
|
||
|
|
{
|
||
|
|
client_p = ptr->data;
|
||
|
|
|
||
|
|
if((aconf = find_dline((struct sockaddr *)&client_p->localClient->ip)) != NULL)
|
||
|
|
{
|
||
|
|
if(aconf->status & CONF_EXEMPTDLINE)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
notify_banned_client(client_p, aconf, D_LINED);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|