solanum/modules/m_kline.c

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/*
* ircd-ratbox: A slightly useful ircd.
* m_kline.c: Bans/unbans a user.
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2005 ircd-ratbox 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include "stdinc.h"
#include "channel.h"
#include "class.h"
#include "client.h"
#include "match.h"
#include "ircd.h"
#include "hostmask.h"
#include "numeric.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "logger.h"
#include "send.h"
#include "hash.h"
#include "s_serv.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "reject.h"
#include "bandbi.h"
#include "operhash.h"
static const char kline_desc[] = "Provides the KLINE facility to ban users via hostmask";
static void mo_kline(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void ms_kline(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void me_kline(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void mo_unkline(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void ms_unkline(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void me_unkline(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
struct Message kline_msgtab = {
"KLINE", 0, 0, 0, 0,
{mg_unreg, mg_not_oper, {ms_kline, 5}, {ms_kline, 5}, {me_kline, 5}, {mo_kline, 3}}
};
struct Message unkline_msgtab = {
"UNKLINE", 0, 0, 0, 0,
{mg_unreg, mg_not_oper, {ms_unkline, 4}, {ms_unkline, 4}, {me_unkline, 3}, {mo_unkline, 2}}
};
mapi_clist_av1 kline_clist[] = { &kline_msgtab, &unkline_msgtab, NULL };
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DECLARE_MODULE_AV2(kline, NULL, NULL, kline_clist, NULL, NULL, NULL, NULL, kline_desc);
/* Local function prototypes */
static bool find_user_host(struct Client *source_p, const char *userhost, char *user, char *host);
static bool valid_user_host(struct Client *source_p, const char *user, const char *host);
static void handle_remote_kline(struct Client *source_p, int tkline_time,
const char *user, const char *host, const char *reason);
static void apply_kline(struct Client *source_p, struct ConfItem *aconf,
const char *reason, const char *oper_reason);
static void apply_tkline(struct Client *source_p, struct ConfItem *aconf,
const char *, const char *, int);
static void apply_prop_kline(struct Client *source_p, struct ConfItem *aconf,
const char *, const char *, int);
static bool already_placed_kline(struct Client *, const char *, const char *, int);
static void handle_remote_unkline(struct Client *source_p, const char *user, const char *host);
static void remove_permkline_match(struct Client *, struct ConfItem *);
static bool remove_temp_kline(struct Client *, struct ConfItem *);
static void remove_prop_kline(struct Client *, struct ConfItem *);
/* mo_kline()
*
* parv[1] - temp time or user@host
* parv[2] - user@host, "ON", or reason
* parv[3] - "ON", reason, or server to target
* parv[4] - server to target, or reason
* parv[5] - reason
*/
static void
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mo_kline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
{
char def[] = "No Reason";
char user[USERLEN + 2];
char host[HOSTLEN + 2];
char *reason = def;
char *oper_reason;
const char *target_server = NULL;
struct ConfItem *aconf;
int tkline_time = 0;
int loc = 1;
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bool propagated = ConfigFileEntry.use_propagated_bans;
if(!IsOperK(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "kline");
return;
}
if((tkline_time = valid_temp_time(parv[loc])) >= 0)
loc++;
/* we just set tkline_time to -1! */
else
tkline_time = 0;
if(find_user_host(source_p, parv[loc], user, host) == 0)
return;
loc++;
if(parc >= loc + 2 && !irccmp(parv[loc], "ON"))
{
if(!IsOperRemoteBan(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS),
me.name, source_p->name, "remoteban");
return;
}
target_server = parv[loc + 1];
loc += 2;
}
if(parc <= loc || EmptyString(parv[loc]))
{
sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
me.name, source_p->name, "KLINE");
return;
}
reason = LOCAL_COPY(parv[loc]);
if(target_server != NULL)
{
propagate_generic(source_p, "KLINE", target_server, CAP_KLN,
"%d %s %s :%s", tkline_time, user, host, reason);
/* If we are sending it somewhere that doesnt include us, stop */
if(!match(target_server, me.name))
return;
/* Set as local-only. */
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propagated = false;
}
/* if we have cluster servers, send it to them.. */
else if(!propagated && rb_dlink_list_length(&cluster_conf_list) > 0)
cluster_generic(source_p, "KLINE",
(tkline_time > 0) ? SHARED_TKLINE : SHARED_PKLINE, CAP_KLN,
"%lu %s %s :%s", tkline_time, user, host, reason);
if(!valid_user_host(source_p, user, host))
return;
if(!valid_wild_card(user, host))
{
sendto_one_notice(source_p,
":Please include at least %d non-wildcard "
"characters with the user@host",
ConfigFileEntry.min_nonwildcard);
return;
}
if(propagated && tkline_time == 0)
{
sendto_one_notice(source_p, ":Cannot set a permanent global ban");
return;
}
if(already_placed_kline(source_p, user, host, tkline_time))
return;
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rb_set_time();
aconf = make_conf();
aconf->status = CONF_KILL;
aconf->created = rb_current_time();
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aconf->host = rb_strdup(host);
aconf->user = rb_strdup(user);
aconf->port = 0;
aconf->info.oper = operhash_add(get_oper_name(source_p));
if(strlen(reason) > BANREASONLEN)
reason[BANREASONLEN] = '\0';
/* Look for an oper reason */
if((oper_reason = strchr(reason, '|')) != NULL)
{
*oper_reason = '\0';
oper_reason++;
if(!EmptyString(oper_reason))
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aconf->spasswd = rb_strdup(oper_reason);
}
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aconf->passwd = rb_strdup(reason);
if(propagated)
apply_prop_kline(source_p, aconf, reason, oper_reason, tkline_time);
else if(tkline_time > 0)
apply_tkline(source_p, aconf, reason, oper_reason, tkline_time);
else
apply_kline(source_p, aconf, reason, oper_reason);
if(ConfigFileEntry.kline_delay)
{
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if(!kline_queued)
{
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rb_event_addonce("check_klines", check_klines_event, NULL,
ConfigFileEntry.kline_delay);
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kline_queued = true;
}
}
else
check_klines();
}
/* ms_kline()
*
* parv[1] - server targeted at
* parv[2] - tkline time (0 if perm)
* parv[3] - user
* parv[4] - host
* parv[5] - reason
*/
static void
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ms_kline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
int tkline_time = atoi(parv[2]);
/* 1.5-3 and earlier contains a bug that allows remote klines to be
* sent with an empty reason field. This is a protocol violation,
* but its not worth dropping the link over.. --anfl
*/
if(parc < 6 || EmptyString(parv[5]))
return;
propagate_generic(source_p, "KLINE", parv[1], CAP_KLN,
"%d %s %s :%s", tkline_time, parv[3], parv[4], parv[5]);
if(!match(parv[1], me.name))
return;
if(!IsPerson(source_p))
return;
handle_remote_kline(source_p, tkline_time, parv[3], parv[4], parv[5]);
}
static void
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me_kline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
/* <tkline_time> <user> <host> :<reason> */
if(!IsPerson(source_p))
return;
handle_remote_kline(source_p, atoi(parv[1]), parv[2], parv[3], parv[4]);
}
static void
handle_remote_kline(struct Client *source_p, int tkline_time,
const char *user, const char *host, const char *kreason)
{
char *reason = LOCAL_COPY(kreason);
struct ConfItem *aconf = NULL;
char *oper_reason;
if(!find_shared_conf(source_p->username, source_p->host,
source_p->servptr->name,
(tkline_time > 0) ? SHARED_TKLINE : SHARED_PKLINE))
return;
if(!valid_user_host(source_p, user, host))
return;
if(!valid_wild_card(user, host))
{
sendto_one_notice(source_p,
":Please include at least %d non-wildcard "
"characters with the user@host",
ConfigFileEntry.min_nonwildcard);
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return;
}
if(already_placed_kline(source_p, user, host, tkline_time))
return;
aconf = make_conf();
aconf->status = CONF_KILL;
aconf->created = rb_current_time();
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aconf->user = rb_strdup(user);
aconf->host = rb_strdup(host);
aconf->info.oper = operhash_add(get_oper_name(source_p));
if(strlen(reason) > BANREASONLEN)
reason[BANREASONLEN] = '\0';
/* Look for an oper reason */
if((oper_reason = strchr(reason, '|')) != NULL)
{
*oper_reason = '\0';
oper_reason++;
if(!EmptyString(oper_reason))
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aconf->spasswd = rb_strdup(oper_reason);
}
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aconf->passwd = rb_strdup(reason);
if(tkline_time > 0)
apply_tkline(source_p, aconf, reason, oper_reason, tkline_time);
else
apply_kline(source_p, aconf, reason, oper_reason);
if(ConfigFileEntry.kline_delay)
{
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if(!kline_queued)
{
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rb_event_addonce("check_klines", check_klines_event, NULL,
ConfigFileEntry.kline_delay);
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kline_queued = true;
}
}
else
check_klines();
}
/* mo_unkline()
*
* parv[1] - kline to remove
* parv[2] - optional "ON"
* parv[3] - optional target server
*/
static void
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mo_unkline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
const char *user;
char *host;
char splat[] = "*";
char *h = LOCAL_COPY(parv[1]);
struct ConfItem *aconf;
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bool propagated = true;
if(!IsOperUnkline(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "unkline");
return;
}
if((host = strchr(h, '@')) || *h == '*' || strchr(h, '.') || strchr(h, ':'))
{
/* Explicit user@host mask given */
if(host) /* Found user@host */
{
*host++ = '\0';
/* check for @host */
if(*h)
user = h;
else
user = splat;
/* check for user@ */
if(!*host)
host = splat;
}
else
{
user = splat; /* no @ found, assume its *@somehost */
host = h;
}
}
else
{
[svn] Backport from early 3.x: -- nenolod 2006/09/27 16:39:14 UTC (20060927-2178) Log: - remove "Processing connection to foobar.net" message Changes: Modified: +0 -3 trunk/src/s_auth.c (File Modified) nenolod 2006/09/27 16:34:26 UTC (20060927-2176) Log: - missed the processing connection one (actually, we can probably nuke this one) Changes: Modified: +1 -2 trunk/src/s_auth.c (File Modified) river 2006/09/27 16:33:05 UTC (20060927-2174) Log: get_client_name = stupid Changes: Modified: +10 -7 trunk/modules/core/m_kill.c (File Modified) nenolod 2006/09/27 16:32:37 UTC (20060927-2172) Log: - remove excessive arguments Changes: Modified: +1 -2 trunk/src/s_conf.c (File Modified) +1 -1 trunk/src/s_user.c (File Modified) nenolod 2006/09/27 16:30:59 UTC (20060927-2170) Log: - use sendto_one_notice() for on-connect notices too. Changes: Modified: +10 -10 trunk/src/s_auth.c (File Modified) nenolod 2006/09/27 16:27:01 UTC (20060927-2168) Log: - use sendto_one_notice() in the core, too. Changes: Modified: +2 -2 trunk/src/chmode.c (File Modified) +8 -15 trunk/src/modules.c (File Modified) +3 -5 trunk/src/s_conf.c (File Modified) +1 -2 trunk/src/s_newconf.c (File Modified) +20 -57 trunk/src/s_user.c (File Modified) river 2006/09/27 16:19:25 UTC (20060927-2166) Log: the KILL command will use get_client_name(, SHOW_IP) instead of target->name, and will show a more useful error for local opers Changes: Modified: +6 -4 trunk/modules/core/m_kill.c (File Modified) nenolod 2006/09/27 16:09:48 UTC (20060927-2164) Log: - fix bugs in sendto_one_notice()/sendto_one_numeric() where a client identifier won't be sent to unregistered clients Changes: Modified: +4 -2 trunk/src/send.c (File Modified) nenolod 2006/09/27 16:05:46 UTC (20060927-2161) Log: - back out r2159 Changes: Modified: +1 -1 trunk/include/client.h (File Modified) nenolod 2006/09/27 16:04:05 UTC (20060927-2159) Log: - get_id(): fall back to "*" if client has no known name Changes: Modified: +1 -1 trunk/include/client.h (File Modified) nenolod 2006/09/27 16:01:29 UTC (20060927-2157) Log: - convert to sendto_one_notice(). Changes: Modified: +2 -3 trunk/unsupported/m_clearchan.c (File Modified) +4 -6 trunk/unsupported/m_force.c (File Modified) nenolod 2006/09/27 15:57:11 UTC (20060927-2155) Log: - use sendto_one_notice() in many places instead of sendto_one(source_p, ":%s NOTICE %s :", ...); Changes: Modified: +10 -25 trunk/extensions/example_module.c (File Modified) +5 -14 trunk/extensions/hurt.c (File Modified) +1 -2 trunk/extensions/m_42.c (File Modified) +7 -12 trunk/extensions/m_mkpasswd.c (File Modified) +1 -2 trunk/extensions/m_ojoin.c (File Modified) +1 -2 trunk/extensions/m_opme.c (File Modified) +3 -3 trunk/extensions/spy_whois_notice.c (File Modified) +3 -3 trunk/extensions/spy_whois_notice_global.c (File Modified) +3 -7 trunk/modules/core/m_die.c (File Modified) +2 -4 trunk/modules/core/m_kill.c (File Modified) +2 -2 trunk/modules/core/m_squit.c (File Modified) +1 -2 trunk/modules/m_challenge.c (File Modified) +11 -15 trunk/modules/m_connect.c (File Modified) +20 -28 trunk/modules/m_dline.c (File Modified) +2 -2 trunk/modules/m_etrace.c (File Modified) +11 -21 trunk/modules/m_gline.c (File Modified) +2 -4 trunk/modules/m_kline.c (File Modified) +1 -2 trunk/modules/m_rehash.c (File Modified) +3 -7 trunk/modules/m_restart.c (File Modified) +31 -45 trunk/modules/m_set.c (File Modified) +2 -4 trunk/modules/m_testmask.c (File Modified) +5 -8 trunk/modules/m_unreject.c (File Modified) +2 -5 trunk/modules/m_xline.c (File Modified) --
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sendto_one_notice(source_p, ":Invalid parameters");
return;
}
/* possible remote kline.. */
if((parc > 3) && (irccmp(parv[2], "ON") == 0))
{
if(!IsOperRemoteBan(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS),
me.name, source_p->name, "remoteban");
return;
}
propagate_generic(source_p, "UNKLINE", parv[3], CAP_UNKLN, "%s %s", user, host);
if(match(parv[3], me.name) == 0)
return;
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propagated = false;
}
aconf = find_exact_conf_by_address(host, CONF_KILL, user);
/* No clustering for removing a propagated kline */
if(propagated && (aconf == NULL || !aconf->lifetime) &&
rb_dlink_list_length(&cluster_conf_list) > 0)
cluster_generic(source_p, "UNKLINE", SHARED_UNKLINE, CAP_UNKLN,
"%s %s", user, host);
if(aconf == NULL)
{
sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host);
return;
}
if(aconf->lifetime)
{
if(propagated)
remove_prop_kline(source_p, aconf);
else
sendto_one_notice(source_p, ":Cannot remove global K-Line %s@%s on specific servers", user, host);
return;
}
if(remove_temp_kline(source_p, aconf))
return;
remove_permkline_match(source_p, aconf);
}
/* ms_unkline()
*
* parv[1] - target server
* parv[2] - user to unkline
* parv[3] - host to unkline
*/
static void
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ms_unkline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
/* parv[0] parv[1] parv[2] parv[3]
* oper target server user host */
propagate_generic(source_p, "UNKLINE", parv[1], CAP_UNKLN, "%s %s", parv[2], parv[3]);
if(!match(parv[1], me.name))
return;
if(!IsPerson(source_p))
return;
handle_remote_unkline(source_p, parv[2], parv[3]);
}
static void
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me_unkline(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
/* user host */
if(!IsPerson(source_p))
return;
handle_remote_unkline(source_p, parv[1], parv[2]);
}
static void
handle_remote_unkline(struct Client *source_p, const char *user, const char *host)
{
struct ConfItem *aconf;
if(!find_shared_conf(source_p->username, source_p->host,
source_p->servptr->name, SHARED_UNKLINE))
return;
aconf = find_exact_conf_by_address(host, CONF_KILL, user);
if(aconf == NULL)
{
sendto_one_notice(source_p, ":No K-Line for %s@%s", user, host);
return;
}
if(aconf->lifetime)
{
sendto_one_notice(source_p, ":Cannot remove global K-Line %s@%s on specific servers", user, host);
return;
}
if(remove_temp_kline(source_p, aconf))
return;
remove_permkline_match(source_p, aconf);
}
/* apply_kline()
*
* inputs -
* output - NONE
* side effects - kline as given, is added to the hashtable
* and conf file
*/
static void
apply_kline(struct Client *source_p, struct ConfItem *aconf,
const char *reason, const char *oper_reason)
{
add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf);
bandb_add(BANDB_KLINE, source_p, aconf->user, aconf->host,
reason, EmptyString(oper_reason) ? NULL : oper_reason, 0);
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/* no oper reason.. */
if(EmptyString(oper_reason))
{
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added K-Line for [%s@%s] [%s]",
get_oper_name(source_p), aconf->user, aconf->host, reason);
ilog(L_KLINE, "K %s 0 %s %s %s",
get_oper_name(source_p), aconf->user, aconf->host, reason);
}
else
{
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added K-Line for [%s@%s] [%s|%s]",
get_oper_name(source_p), aconf->user, aconf->host,
reason, oper_reason);
ilog(L_KLINE, "K %s 0 %s %s %s|%s",
get_oper_name(source_p), aconf->user, aconf->host, reason, oper_reason);
}
sendto_one_notice(source_p, ":Added K-Line [%s@%s]",
aconf->user, aconf->host);
}
/* apply_tkline()
*
* inputs -
* output - NONE
* side effects - tkline as given is placed
*/
static void
apply_tkline(struct Client *source_p, struct ConfItem *aconf,
const char *reason, const char *oper_reason, int tkline_time)
{
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aconf->hold = rb_current_time() + tkline_time;
add_temp_kline(aconf);
/* no oper reason.. */
if(EmptyString(oper_reason))
{
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added temporary %d min. K-Line for [%s@%s] [%s]",
get_oper_name(source_p), tkline_time / 60,
aconf->user, aconf->host, reason);
ilog(L_KLINE, "K %s %d %s %s %s",
get_oper_name(source_p), tkline_time / 60, aconf->user, aconf->host, reason);
}
else
{
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added temporary %d min. K-Line for [%s@%s] [%s|%s]",
get_oper_name(source_p), tkline_time / 60,
aconf->user, aconf->host, reason, oper_reason);
ilog(L_KLINE, "K %s %d %s %s %s|%s",
get_oper_name(source_p), tkline_time / 60,
aconf->user, aconf->host, reason, oper_reason);
}
sendto_one_notice(source_p, ":Added temporary %d min. K-Line [%s@%s]",
tkline_time / 60, aconf->user, aconf->host);
}
static void
apply_prop_kline(struct Client *source_p, struct ConfItem *aconf,
const char *reason, const char *oper_reason, int tkline_time)
{
aconf->flags |= CONF_FLAGS_MYOPER | CONF_FLAGS_TEMPORARY;
aconf->hold = rb_current_time() + tkline_time;
aconf->lifetime = aconf->hold;
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replace_old_ban(aconf);
rb_dlinkAddAlloc(aconf, &prop_bans);
add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf);
/* no oper reason.. */
if(EmptyString(oper_reason))
{
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added global %d min. K-Line for [%s@%s] [%s]",
get_oper_name(source_p), tkline_time / 60,
aconf->user, aconf->host, reason);
ilog(L_KLINE, "K %s %d %s %s %s",
get_oper_name(source_p), tkline_time / 60, aconf->user, aconf->host, reason);
}
else
{
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added global %d min. K-Line for [%s@%s] [%s|%s]",
get_oper_name(source_p), tkline_time / 60,
aconf->user, aconf->host, reason, oper_reason);
ilog(L_KLINE, "K %s %d %s %s %s|%s",
get_oper_name(source_p), tkline_time / 60,
aconf->user, aconf->host, reason, oper_reason);
}
sendto_one_notice(source_p, ":Added global %d min. K-Line [%s@%s]",
tkline_time / 60, aconf->user, aconf->host);
sendto_server(NULL, NULL, CAP_BAN|CAP_TS6, NOCAPS,
":%s BAN K %s %s %lu %d %d * :%s%s%s",
source_p->id, aconf->user, aconf->host,
(unsigned long)aconf->created,
(int)(aconf->hold - aconf->created),
(int)(aconf->lifetime - aconf->created),
reason,
oper_reason ? "|" : "",
oper_reason ? oper_reason : "");
}
/* find_user_host()
*
* inputs - client placing kline, user@host, user buffer, host buffer
* output - false if not ok to kline, true to kline i.e. if valid user host
* side effects -
*/
static bool
find_user_host(struct Client *source_p, const char *userhost, char *luser, char *lhost)
{
char *hostp;
hostp = strchr(userhost, '@');
if(hostp != NULL) /* I'm a little user@host */
{
*(hostp++) = '\0'; /* short and squat */
if(*userhost)
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rb_strlcpy(luser, userhost, USERLEN + 1); /* here is my user */
else
strcpy(luser, "*");
if(*hostp)
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rb_strlcpy(lhost, hostp, HOSTLEN + 1); /* here is my host */
else
strcpy(lhost, "*");
}
else
{
/* no '@', no '.', so its not a user@host or host, therefore
* its a nick, which support was removed for.
*/
if(strchr(userhost, '.') == NULL && strchr(userhost, ':') == NULL)
{
sendto_one_notice(source_p, ":K-Line must be a user@host or host");
return false;
}
luser[0] = '*'; /* no @ found, assume its *@somehost */
luser[1] = '\0';
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rb_strlcpy(lhost, userhost, HOSTLEN + 1);
}
/* would break the protocol */
if (*luser == ':' || *lhost == ':')
{
sendto_one_notice(source_p, ":Invalid K-Line");
return false;
}
return true;
}
/* valid_user_host()
*
* inputs - user buffer, host buffer
* output - false if invalid, true if valid
* side effects -
*/
static bool
valid_user_host(struct Client *source_p, const char *luser, const char *lhost)
{
/* # is invalid, as are '!' (n!u@h kline) and '@' (u@@h kline) */
if(strchr(lhost, '#') || strchr(luser, '#') || strchr(luser, '!') || strchr(lhost, '@'))
{
sendto_one_notice(source_p, ":Invalid K-Line");
return false;
}
return true;
}
/* already_placed_kline()
*
* inputs - source to notify, user@host to check, tkline time
* outputs - true if a perm kline or a tkline when a tkline is being
* set exists, else false
* side effects - notifies source_p kline exists
*/
/* Note: This currently works if the new K-line is a special case of an
* existing K-line, but not the other way round. To do that we would
* have to walk the hash and check every existing K-line. -A1kmm.
*/
static bool
already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int tkline)
{
const char *reason, *p;
struct rb_sockaddr_storage iphost, *piphost;
struct ConfItem *aconf;
int t, bits;
aconf = find_exact_conf_by_address(lhost, CONF_KILL, luser);
if(aconf == NULL && ConfigFileEntry.non_redundant_klines)
{
bits = 0;
if((t = parse_netmask(lhost, &iphost, &bits)) != HM_HOST)
{
#ifdef RB_IPV6
if(t == HM_IPV6)
t = AF_INET6;
else
#endif
t = AF_INET;
piphost = &iphost;
}
else
piphost = NULL;
aconf = find_conf_by_address(lhost, NULL, NULL, (struct sockaddr *) piphost,
CONF_KILL, t, luser, NULL);
if(aconf != NULL)
{
/* The above was really a lookup of a single IP,
* so check if the new kline is wider than the
* existing one.
* -- jilles
*/
p = strchr(aconf->host, '/');
if(bits > 0 && (p == NULL || bits < atoi(p + 1)))
aconf = NULL;
}
}
if(aconf != NULL)
{
/* setting a tkline, or existing one is perm */
if(tkline || ((aconf->flags & CONF_FLAGS_TEMPORARY) == 0))
{
reason = aconf->passwd ? aconf->passwd : "<No Reason>";
sendto_one_notice(source_p,
":[%s@%s] already K-Lined by [%s@%s] - %s",
luser, lhost, aconf->user, aconf->host, reason);
return true;
}
}
return false;
}
/* remove_permkline_match()
*
* hunts for a permanent kline, and removes it.
*/
static void
remove_permkline_match(struct Client *source_p, struct ConfItem *aconf)
{
sendto_one_notice(source_p, ":K-Line for [%s@%s] is removed", aconf->user, aconf->host);
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s has removed the K-Line for: [%s@%s]",
get_oper_name(source_p), aconf->user, aconf->host);
ilog(L_KLINE, "UK %s %s %s", get_oper_name(source_p), aconf->user, aconf->host);
remove_reject_mask(aconf->user, aconf->host);
bandb_del(BANDB_KLINE, aconf->user, aconf->host);
delete_one_address_conf(aconf->host, aconf);
}
/* remove_temp_kline()
*
* inputs - username, hostname to unkline
* outputs -
* side effects - tries to unkline anything that matches
*/
static bool
remove_temp_kline(struct Client *source_p, struct ConfItem *aconf)
{
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rb_dlink_node *ptr;
int i;
for(i = 0; i < LAST_TEMP_TYPE; i++)
{
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RB_DLINK_FOREACH(ptr, temp_klines[i].head)
{
if(aconf == ptr->data)
{
sendto_one_notice(source_p,
":Un-klined [%s@%s] from temporary k-lines",
aconf->user, aconf->host);
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s has removed the temporary K-Line for: [%s@%s]",
get_oper_name(source_p), aconf->user,
aconf->host);
ilog(L_KLINE, "UK %s %s %s",
get_oper_name(source_p), aconf->user, aconf->host);
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rb_dlinkDestroy(ptr, &temp_klines[i]);
remove_reject_mask(aconf->user, aconf->host);
delete_one_address_conf(aconf->host, aconf);
return true;
}
}
}
return false;
}
static void
remove_prop_kline(struct Client *source_p, struct ConfItem *aconf)
{
rb_dlink_node *ptr;
time_t now;
ptr = rb_dlinkFind(aconf, &prop_bans);
if (!ptr)
return;
sendto_one_notice(source_p,
":Un-klined [%s@%s] from global k-lines",
aconf->user, aconf->host);
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s has removed the global K-Line for: [%s@%s]",
get_oper_name(source_p), aconf->user,
aconf->host);
ilog(L_KLINE, "UK %s %s %s",
get_oper_name(source_p), aconf->user, aconf->host);
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 K %s %s %lu %d %d * :*",
source_p->id, aconf->user, aconf->host,
(unsigned long)aconf->created,
0,
(int)(aconf->lifetime - aconf->created));
remove_reject_mask(aconf->user, aconf->host);
deactivate_conf(aconf, ptr, now);
}