MirrorHub/construct
0
0
Fork 0
mirror of https://github.com/matrix-construct/construct synced 2024-12-27 07:54:05 +01:00
Code Issues Releases Wiki Activity
construct/modules/m_xline.c
Jilles Tjoelker 35f6f850b6 Remove reject entries on unkline/ungline/unxline. 
When a user is rejected, remember the hash value of the
ban mask (for klines/glines, hash value of the user part
XOR hash value of the host part) with the rejected IP;
if the kline/gline/xline is removed, remove rejects with
the same hash value also.  Note that this does not happen
for expiries; this is deliberate.
Rejects for no auth{} or dnsbl put a hash value of 0;
they cannot be removed selectively.
2007-12-08 21:54:51 +01:00

683 lines
16 KiB
C
Raw Blame History

/* modules/m_xline.c
*
* Copyright (C) 2002-2003 Lee Hardy <lee@leeh.co.uk>
* Copyright (C) 2002-2005 ircd-ratbox development team
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1.Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2.Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3.The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $Id: m_xline.c 3161 2007-01-25 07:23:01Z nenolod $
*/
#include "stdinc.h"
#include "tools.h"
#include "send.h"
#include "channel.h"
#include "client.h"
#include "common.h"
#include "config.h"
#include "class.h"
#include "ircd.h"
#include "numeric.h"
#include "memory.h"
#include "s_log.h"
#include "s_serv.h"
#include "whowas.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "hash.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "reject.h"
static int mo_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
static int ms_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
static int me_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
static int mo_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
static int ms_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
static int me_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
struct Message xline_msgtab = {
"XLINE", 0, 0, 0, MFLG_SLOW,
{mg_unreg, mg_not_oper, {ms_xline, 5}, {ms_xline, 5}, {me_xline, 5}, {mo_xline, 3}}
};
struct Message unxline_msgtab = {
"UNXLINE", 0, 0, 0, MFLG_SLOW,
{mg_unreg, mg_not_oper, {ms_unxline, 3}, {ms_unxline, 3}, {me_unxline, 2}, {mo_unxline, 2}}
};
mapi_clist_av1 xline_clist[] = { &xline_msgtab, &unxline_msgtab, NULL };
DECLARE_MODULE_AV1(xline, NULL, NULL, xline_clist, NULL, NULL, "$Revision: 3161 $");
static int valid_xline(struct Client *, const char *, const char *);
static void apply_xline(struct Client *client_p, const char *name,
const char *reason, int temp_time);
static void write_xline(struct Client *source_p, struct ConfItem *aconf);
static void propagate_xline(struct Client *source_p, const char *target,
int temp_time, const char *name,
const char *type, const char *reason);
static void cluster_xline(struct Client *source_p, int temp_time,
const char *name, const char *reason);
static void handle_remote_xline(struct Client *source_p, int temp_time,
const char *name, const char *reason);
static void handle_remote_unxline(struct Client *source_p, const char *name);
static void remove_xline(struct Client *source_p, const char *name);
static int remove_xline_from_file(struct Client *source_p, const char *gecos);
/* m_xline()
*
* parv[1] - thing to xline
* parv[2] - optional type/reason
* parv[3] - reason
*/
static int
mo_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
struct ConfItem *aconf;
const char *name;
const char *reason;
const char *target_server = NULL;
int temp_time;
int loc = 1;
if(!IsOperXline(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS),
me.name, source_p->name, "xline");
return 0;
}
if((temp_time = valid_temp_time(parv[loc])) >= 0)
loc++;
/* we just set temp_time to -1! */
else
temp_time = 0;
name = parv[loc];
loc++;
/* XLINE <gecos> ON <server> :<reason> */
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 0;
}
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, "XLINE");
return 0;
}
reason = parv[loc];
if(target_server != NULL)
{
propagate_xline(source_p, target_server, temp_time,
name, "2", reason);
if(!match(target_server, me.name))
return 0;
}
else if(dlink_list_length(&cluster_conf_list) > 0)
cluster_xline(source_p, temp_time, name, reason);
if((aconf = find_xline_mask(name)) != NULL)
{
sendto_one(source_p, ":%s NOTICE %s :[%s] already X-Lined by [%s] - %s",
me.name, source_p->name, name, aconf->name, aconf->passwd);
return 0;
}
if(!valid_xline(source_p, name, reason))
return 0;
apply_xline(source_p, name, reason, temp_time);
return 0;
}
/* ms_xline()
*
* handles a remote xline
*/
static int
ms_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
/* parv[0] parv[1] parv[2] parv[3] parv[4]
* oper target serv xline type reason
*/
propagate_xline(source_p, parv[1], 0, parv[2], parv[3], parv[4]);
if(!IsPerson(source_p))
return 0;
/* destined for me? */
if(!match(parv[1], me.name))
return 0;
handle_remote_xline(source_p, 0, parv[2], parv[4]);
return 0;
}
static int
me_xline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
/* time name type :reason */
if(!IsPerson(source_p))
return 0;
handle_remote_xline(source_p, atoi(parv[1]), parv[2], parv[4]);
return 0;
}
static void
handle_remote_xline(struct Client *source_p, int temp_time,
const char *name, const char *reason)
{
struct ConfItem *aconf;
if(!find_shared_conf(source_p->username, source_p->host,
source_p->servptr->name,
(temp_time > 0) ? SHARED_TXLINE : SHARED_PXLINE))
return;
if(!valid_xline(source_p, name, reason))
return;
/* already xlined */
if((aconf = find_xline_mask(name)) != NULL)
{
sendto_one_notice(source_p, ":[%s] already X-Lined by [%s] - %s", name, aconf->name, aconf->passwd);
return;
}
apply_xline(source_p, name, reason, temp_time);
}
/* valid_xline()
*
* inputs - client xlining, gecos, reason and whether to warn
* outputs -
* side effects - checks the xline for validity, erroring if needed
*/
static int
valid_xline(struct Client *source_p, const char *gecos,
const char *reason)
{
if(EmptyString(reason))
{
sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
get_id(&me, source_p),
get_id(source_p, source_p), "XLINE");
return 0;
}
if(strchr(reason, ':') != NULL)
{
sendto_one_notice(source_p,
":Invalid character ':' in comment");
return 0;
}
if(strchr(reason, '"'))
{
sendto_one_notice(source_p,
":Invalid character '\"' in comment");
return 0;
}
if(!valid_wild_card_simple(gecos))
{
sendto_one_notice(source_p,
":Please include at least %d non-wildcard "
"characters with the xline",
ConfigFileEntry.min_nonwildcard_simple);
return 0;
}
return 1;
}
void
apply_xline(struct Client *source_p, const char *name, const char *reason,
int temp_time)
{
struct ConfItem *aconf;
aconf = make_conf();
aconf->status = CONF_XLINE;
if(strstr(name, "\\s"))
{
char *tmp = LOCAL_COPY(name);
char *orig = tmp;
char *new = tmp;
while(*orig)
{
if(*orig == '\\' && *(orig + 1) != '\0')
{
if(*(orig + 1) == 's')
{
*new++ = ' ';
orig += 2;
}
/* otherwise skip that and the escaped
* character after it, so we dont mistake
* \\s as \s --fl
*/
else
{
*new++ = *orig++;
*new++ = *orig++;
}
}
else
*new++ = *orig++;
}
*new = '\0';
DupString(aconf->name, tmp);
}
else
DupString(aconf->name, name);
DupString(aconf->passwd, reason);
collapse(aconf->name);
if(temp_time > 0)
{
aconf->hold = CurrentTime + temp_time;
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s added temporary %d min. X-Line for [%s] [%s]",
get_oper_name(source_p), temp_time / 60,
aconf->name, reason);
ilog(L_KLINE, "X %s %d %s %s",
get_oper_name(source_p), temp_time / 60,
name, reason);
sendto_one_notice(source_p, ":Added temporary %d min. X-Line [%s]",
temp_time / 60, aconf->name);
}
else
{
sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s added X-Line for [%s] [%s]",
get_oper_name(source_p),
aconf->name, aconf->passwd);
sendto_one_notice(source_p, ":Added X-Line for [%s] [%s]",
aconf->name, aconf->passwd);
write_xline(source_p, aconf);
ilog(L_KLINE, "X %s 0 %s %s",
get_oper_name(source_p), name, reason);
}
dlinkAddAlloc(aconf, &xline_conf_list);
check_xlines();
}
/* write_xline()
*
* inputs - gecos, reason, xline type
* outputs - writes an xline to the config
* side effects -
*/
static void
write_xline(struct Client *source_p, struct ConfItem *aconf)
{
char buffer[BUFSIZE * 2];
FILE *out;
const char *filename;
filename = ConfigFileEntry.xlinefile;
if((out = fopen(filename, "a")) == NULL)
{
sendto_realops_snomask(SNO_GENERAL, L_ALL, "*** Problem opening %s ", filename);
sendto_one_notice(source_p, ":*** Problem opening file, xline added temporarily only");
return;
}
ircsprintf(buffer, "\"%s\",\"0\",\"%s\",\"%s\",%ld\n",
aconf->name, aconf->passwd,
get_oper_name(source_p), CurrentTime);
if(fputs(buffer, out) == -1)
{
sendto_realops_snomask(SNO_GENERAL, L_ALL, "*** Problem writing to %s", filename);
sendto_one_notice(source_p, ":*** Problem writing to file, xline added temporarily only");
fclose(out);
return;
}
if(fclose(out))
{
sendto_realops_snomask(SNO_GENERAL, L_ALL, "*** Problem writing to %s", filename);
sendto_one_notice(source_p, ":*** Problem writing to file, xline added temporarily only");
return;
}
}
static void
propagate_xline(struct Client *source_p, const char *target,
int temp_time, const char *name, const char *type,
const char *reason)
{
if(!temp_time)
{
sendto_match_servs(source_p, target, CAP_CLUSTER, NOCAPS,
"XLINE %s %s %s :%s",
target, name, type, reason);
sendto_match_servs(source_p, target, CAP_ENCAP, CAP_CLUSTER,
"ENCAP %s XLINE %d %s 2 :%s",
target, temp_time, name, reason);
}
else
sendto_match_servs(source_p, target, CAP_ENCAP, NOCAPS,
"ENCAP %s XLINE %d %s %s :%s",
target, temp_time, name, type, reason);
}
static void
cluster_xline(struct Client *source_p, int temp_time, const char *name,
const char *reason)
{
struct remote_conf *shared_p;
dlink_node *ptr;
DLINK_FOREACH(ptr, cluster_conf_list.head)
{
shared_p = ptr->data;
/* old protocol cant handle temps, and we dont really want
* to convert them to perm.. --fl
*/
if(!temp_time)
{
if(!(shared_p->flags & SHARED_PXLINE))
continue;
sendto_match_servs(source_p, shared_p->server, CAP_CLUSTER, NOCAPS,
"XLINE %s %s 2 :%s",
shared_p->server, name, reason);
sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, CAP_CLUSTER,
"ENCAP %s XLINE 0 %s 2 :%s",
shared_p->server, name, reason);
}
else if(shared_p->flags & SHARED_TXLINE)
sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, NOCAPS,
"ENCAP %s XLINE %d %s 2 :%s",
shared_p->server, temp_time, name, reason);
}
}
/* mo_unxline()
*
* parv[1] - thing to unxline
*/
static int
mo_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
if(!IsOperXline(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS),
me.name, source_p->name, "xline");
return 0;
}
if(parc == 4 && !(irccmp(parv[2], "ON")))
{
if(!IsOperRemoteBan(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS),
me.name, source_p->name, "remoteban");
return 0;
}
propagate_generic(source_p, "UNXLINE", parv[3], CAP_CLUSTER,
"%s", parv[1]);
if(match(parv[3], me.name) == 0)
return 0;
}
else if(dlink_list_length(&cluster_conf_list))
cluster_generic(source_p, "UNXLINE", SHARED_UNXLINE, CAP_CLUSTER,
"%s", parv[1]);
remove_xline(source_p, parv[1]);
return 0;
}
/* ms_unxline()
*
* handles a remote unxline
*/
static int
ms_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
/* parv[0] parv[1] parv[2]
* oper target server gecos
*/
propagate_generic(source_p, "UNXLINE", parv[1], CAP_CLUSTER,
"%s", parv[2]);
if(!match(parv[1], me.name))
return 0;
if(!IsPerson(source_p))
return 0;
handle_remote_unxline(source_p, parv[2]);
return 0;
}
static int
me_unxline(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
/* name */
if(!IsPerson(source_p))
return 0;
handle_remote_unxline(source_p, parv[1]);
return 0;
}
static void
handle_remote_unxline(struct Client *source_p, const char *name)
{
if(!find_shared_conf(source_p->username, source_p->host,
source_p->servptr->name, SHARED_UNXLINE))
return;
remove_xline(source_p, name);
return;
}
static void
remove_xline(struct Client *source_p, const char *name)
{
struct ConfItem *aconf;
dlink_node *ptr;
DLINK_FOREACH(ptr, xline_conf_list.head)
{
aconf = ptr->data;
if(!irccmp(aconf->name, name))
{
if (!aconf->hold)
{
if (!remove_xline_from_file(source_p, name))
return;
}
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->name, NULL);
free_conf(aconf);
dlinkDestroy(ptr, &xline_conf_list);
return;
}
}
sendto_one_notice(source_p, ":No X-Line for %s", name);
return;
}
/* remove_xline_from_file()
*
* inputs - gecos to remove
* outputs -
* side effects - removes xline from conf, if exists
* - does not touch xline_conf_list
*/
static int
remove_xline_from_file(struct Client *source_p, const char *huntgecos)
{
FILE *in, *out;
char buf[BUFSIZE];
char buff[BUFSIZE];
char temppath[BUFSIZE];
const char *filename;
const char *gecos;
mode_t oldumask;
char *p;
int error_on_write = 0;
int found_xline = 0;
filename = ConfigFileEntry.xlinefile;
ircsnprintf(temppath, sizeof(temppath),
"%s.tmp", ConfigFileEntry.xlinefile);
if((in = fopen(filename, "r")) == NULL)
{
sendto_one_notice(source_p, ":Cannot open %s", filename);
return 0;
}
oldumask = umask(0);
if((out = fopen(temppath, "w")) == NULL)
{
sendto_one_notice(source_p, ":Cannot open %s", temppath);
fclose(in);
umask(oldumask);
return 0;
}
umask(oldumask);
while (fgets(buf, sizeof(buf), in))
{
if(error_on_write)
{
if(temppath != NULL)
(void) unlink(temppath);
break;
}
strlcpy(buff, buf, sizeof(buff));
if((p = strchr(buff, '\n')) != NULL)
*p = '\0';
if((*buff == '\0') || (*buff == '#'))
{
error_on_write = (fputs(buf, out) < 0) ? YES : NO;
continue;
}
if((gecos = getfield(buff)) == NULL)
{
error_on_write = (fputs(buf, out) < 0) ? YES : NO;
continue;
}
/* matching.. */
if(irccmp(gecos, huntgecos) == 0)
found_xline++;
else
error_on_write = (fputs(buf, out) < 0) ? YES : NO;
}
fclose(in);
if (fclose(out))
error_on_write = YES;
if(error_on_write)
{
sendto_one_notice(source_p,
":Couldn't write temp xline file, aborted");
return 0;
}
else if(found_xline == 0)
{
sendto_one_notice(source_p, ":Cannot find X-Line for %s in file", huntgecos);
if(temppath != NULL)
(void) unlink(temppath);
return 0;
}
if (rename(temppath, filename))
{
sendto_one_notice(source_p, ":Couldn't rename temp file, aborted");
return 0;
}
sendto_one_notice(source_p, ":X-Line for [%s] is removed", huntgecos);
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"%s has removed the X-Line for: [%s]",
get_oper_name(source_p), huntgecos);
ilog(L_KLINE, "UX %s %s", get_oper_name(source_p), huntgecos);
return 1;
}
Reference in a new issue View git blame Copy permalink