/*
* charybdis: An advanced ircd.
* m_ban.c: Propagates network bans across servers.
- *
+ *
* Copyright (C) 2010 Jilles Tjoelker
*
* Redistribution and use in source and binary forms, with or without
#include "stdinc.h"
#include "send.h"
+#include "channel.h"
#include "client.h"
-#include "common.h"
-#include "config.h"
+#include "defaults.h"
#include "ircd.h"
#include "match.h"
#include "s_conf.h"
#include "operhash.h"
#include "reject.h"
#include "hostmask.h"
+#include "logger.h"
+
+static const char ban_desc[] = "Provides the TS6 BAN command for propagating network-wide bans";
-static int ms_ban(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
+static void m_ban(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
+static void ms_ban(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
struct Message ban_msgtab = {
- "BAN", 0, 0, 0, MFLG_SLOW,
- {mg_unreg, mg_ignore, {ms_ban, 9}, {ms_ban, 9}, mg_ignore, mg_ignore}
+ "BAN", 0, 0, 0, 0,
+ {mg_unreg, {m_ban, 0}, {ms_ban, 9}, {ms_ban, 9}, mg_ignore, {m_ban, 0}}
};
mapi_clist_av1 ban_clist[] = { &ban_msgtab, NULL };
-DECLARE_MODULE_AV1(ban, NULL, NULL, ban_clist, NULL, NULL, "$Revision: 1349 $");
+
+DECLARE_MODULE_AV2(ban, NULL, NULL, ban_clist, NULL, NULL, NULL, NULL, ban_desc);
+
+static void
+m_ban(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
+{
+ sendto_one_notice(source_p, ":The BAN command is not user-accessible.");
+ sendto_one_notice(source_p, ":To ban a user from a channel, see /QUOTE HELP CMODE");
+ if (IsOperGeneral(source_p))
+ sendto_one_notice(source_p, ":To ban a user from a server or from the network, see /QUOTE HELP KLINE");
+}
/* ms_ban()
*
* parv[7] - oper or *
* parv[8] - reason (possibly with |operreason)
*/
-static int
-ms_ban(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
+static void
+ms_ban(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
rb_dlink_node *ptr;
struct ConfItem *aconf;
unsigned int ntype;
const char *oper, *stype;
- time_t created, hold, lifetime;
+ time_t now, created, hold, lifetime;
char *p;
int act;
+ int valid;
+ now = rb_current_time();
if (strlen(parv[1]) != 1)
{
sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
"Unknown BAN type %s from %s",
parv[1], source_p->name);
- return 0;
+ return;
}
switch (parv[1][0])
{
ntype = CONF_XLINE;
stype = "X-Line";
break;
+ case 'R':
+ ntype = IsChannelName(parv[3]) ? CONF_RESV_CHANNEL :
+ CONF_RESV_NICK;
+ stype = "RESV";
+ break;
default:
sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
"Unknown BAN type %s from %s",
parv[1], source_p->name);
- return 0;
+ return;
}
created = atol(parv[4]);
hold = created + atoi(parv[5]);
ptr = find_prop_ban(ntype, parv[2], parv[3]);
if (ptr != NULL)
{
+ /* We already know about this ban mask. */
aconf = ptr->data;
if (aconf->created > created ||
(aconf->created == created &&
aconf->user ? aconf->user : "",
aconf->user ? "@" : "",
aconf->host);
- return 0;
+ return;
}
+ /* act indicates if something happened (from the oper's
+ * point of view). This is the case if the ban was
+ * previously active (not deleted) or if the new ban
+ * is not a removal and not already expired.
+ */
act = !(aconf->status & CONF_ILLEGAL) || (hold != created &&
- hold > rb_current_time());
+ hold > now);
if (lifetime > aconf->lifetime)
aconf->lifetime = lifetime;
/* already expired, hmm */
- if (aconf->lifetime <= rb_current_time())
- return 0;
- deactivate_conf(aconf, ptr);
+ if (aconf->lifetime <= now)
+ return;
+ /* Deactivate, it will be reactivated later if appropriate. */
+ deactivate_conf(aconf, ptr, now);
rb_free(aconf->user);
aconf->user = NULL;
rb_free(aconf->host);
}
else
{
+ /* New ban mask. */
aconf = make_conf();
aconf->status = CONF_ILLEGAL | ntype;
aconf->lifetime = lifetime;
rb_dlinkAddAlloc(aconf, &prop_bans);
- act = hold != created && hold > rb_current_time();
+ act = hold != created && hold > now;
}
aconf->flags &= ~CONF_FLAGS_MYOPER;
aconf->flags |= CONF_FLAGS_TEMPORARY;
aconf->info.oper = operhash_add(oper);
aconf->created = created;
aconf->hold = hold;
- p = strchr(parv[parc - 1], '|');
- if (p == NULL)
+ if (ntype != CONF_KILL || (p = strchr(parv[parc - 1], '|')) == NULL)
aconf->passwd = rb_strdup(parv[parc - 1]);
else
{
aconf->passwd = rb_strndup(parv[parc - 1], p - parv[parc - 1] + 1);
aconf->spasswd = rb_strdup(p + 1);
}
- if (act && hold != created &&
- !(ntype == CONF_KILL ?
- valid_wild_card(aconf->user, aconf->host) :
- valid_wild_card_simple(aconf->host)))
+ /* The ban is fully filled in and in the prop_bans list
+ * but still deactivated. Now determine if it should be activated
+ * and send the server notices.
+ */
+ /* We only reject *@* and the like here.
+ * Otherwise malformed bans are fairly harmless and can be removed.
+ */
+ switch (ntype)
+ {
+ case CONF_KILL:
+ valid = valid_wild_card(aconf->user, aconf->host);
+ break;
+ case CONF_RESV_CHANNEL:
+ valid = 1;
+ break;
+ default:
+ valid = valid_wild_card_simple(aconf->host);
+ break;
+ }
+ if (act && hold != created && !valid)
{
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"Ignoring global %d min. %s from %s%s%s for [%s%s%s]: too few non-wildcard characters",
- (hold - rb_current_time()) / 60,
+ (int)((hold - now) / 60),
stype,
IsServer(source_p) ? source_p->name : get_oper_name(source_p),
strcmp(parv[7], "*") ? " on behalf of " : "",
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added global %d min. %s%s%s for [%s%s%s] [%s]",
IsServer(source_p) ? source_p->name : get_oper_name(source_p),
- (hold - rb_current_time()) / 60,
+ (int)((hold - now) / 60),
stype,
strcmp(parv[7], "*") ? " from " : "",
strcmp(parv[7], "*") ? parv[7] : "",
parv[parc - 1]);
ilog(L_KLINE, "%s %s %d %s%s%s %s", parv[1],
IsServer(source_p) ? source_p->name : get_oper_name(source_p),
- (hold - rb_current_time()) / 60,
+ (int)((hold - now) / 60),
aconf->user ? aconf->user : "",
aconf->user ? " " : "",
aconf->host,
aconf->user ? " " : "",
aconf->host);
}
+ /* If CONF_ILLEGAL is still set at this point, remove entries from the
+ * reject cache (for klines and xlines).
+ * If CONF_ILLEGAL is not set, add the ban to the type-specific data
+ * structure and take action on matched clients/channels.
+ */
switch (ntype)
{
case CONF_KILL:
else
{
add_conf_by_address(aconf->host, CONF_KILL, aconf->user, NULL, aconf);
- if(ConfigFileEntry.kline_delay ||
- (IsServer(source_p) &&
- !HasSentEob(source_p)))
- {
- if(kline_queued == 0)
- {
- rb_event_addonce("check_klines", check_klines_event, NULL,
- ConfigFileEntry.kline_delay);
- kline_queued = 1;
- }
- }
- else
- check_klines();
+ check_one_kline(aconf);
}
break;
case CONF_XLINE:
check_xlines();
}
break;
+ case CONF_RESV_CHANNEL:
+ if (!(aconf->status & CONF_ILLEGAL))
+ {
+ add_to_resv_hash(aconf->host, aconf);
+ resv_chan_forcepart(aconf->host, aconf->passwd, hold - now);
+ }
+ break;
+ case CONF_RESV_NICK:
+ if (!(aconf->status & CONF_ILLEGAL))
+ rb_dlinkAddAlloc(aconf, &resv_conf_list);
+ break;
}
sendto_server(client_p, NULL, CAP_BAN|CAP_TS6, NOCAPS,
":%s BAN %s %s %s %s %s %s %s :%s",
parv[6],
parv[7],
parv[parc - 1]);
- return 0;
}