mirror of
https://github.com/matrix-construct/construct
synced 2024-08-18 23:54:55 +02:00
When we broadcast a KILL message, this generates server notices on all other servers (assuming the target user exists). Therefore, we should also send a notice to our local opers.
443 lines
12 KiB
C
443 lines
12 KiB
C
/* modules/m_signon.c
|
|
* Copyright (C) 2006 Michael Tharp <gxti@partiallystapled.com>
|
|
* Copyright (C) 2006 charybdis 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_signon.c 1192 2006-04-21 16:21:02Z jilles $
|
|
*/
|
|
|
|
#include "stdinc.h"
|
|
|
|
#include "send.h"
|
|
#include "channel.h"
|
|
#include "client.h"
|
|
#include "common.h"
|
|
#include "config.h"
|
|
#include "ircd.h"
|
|
#include "numeric.h"
|
|
#include "s_conf.h"
|
|
#include "s_serv.h"
|
|
#include "hash.h"
|
|
#include "msg.h"
|
|
#include "parse.h"
|
|
#include "modules.h"
|
|
#include "whowas.h"
|
|
#include "monitor.h"
|
|
#include "s_stats.h"
|
|
#include "snomask.h"
|
|
#include "match.h"
|
|
#include "s_user.h"
|
|
|
|
static int me_svslogin(struct Client *, struct Client *, int, const char **);
|
|
static int ms_signon(struct Client *, struct Client *, int, const char **);
|
|
|
|
static void send_signon(struct Client *, struct Client *, const char *, const char *, const char *, unsigned int, const char *);
|
|
|
|
struct Message svslogin_msgtab = {
|
|
"SVSLOGIN", 0, 0, 0, MFLG_SLOW,
|
|
{mg_ignore, mg_ignore, mg_ignore, mg_ignore, {me_svslogin, 6}, mg_ignore}
|
|
};
|
|
struct Message signon_msgtab = {
|
|
"SIGNON", 0, 0, 0, MFLG_SLOW,
|
|
{mg_ignore, mg_ignore, {ms_signon, 6}, mg_ignore, mg_ignore, mg_ignore}
|
|
};
|
|
|
|
mapi_clist_av1 signon_clist[] = {
|
|
&svslogin_msgtab, &signon_msgtab, NULL
|
|
};
|
|
|
|
DECLARE_MODULE_AV1(signon, NULL, NULL, signon_clist, NULL, NULL, "$Revision: 1192 $");
|
|
|
|
#define NICK_VALID 1
|
|
#define USER_VALID 2
|
|
#define HOST_VALID 4
|
|
|
|
static int
|
|
clean_nick(const char *nick)
|
|
{
|
|
int len = 0;
|
|
|
|
if(*nick == '-')
|
|
return 0;
|
|
|
|
/* This is used to check logins, which are often
|
|
* numeric. Don't check for leading digits, if
|
|
* services wants to set someone's nick to something
|
|
* starting with a number, let it try.
|
|
* --gxti
|
|
*/
|
|
|
|
for (; *nick; nick++)
|
|
{
|
|
len++;
|
|
if(!IsNickChar(*nick))
|
|
return 0;
|
|
}
|
|
|
|
/* nicklen is +1 */
|
|
if(len >= NICKLEN)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
clean_username(const char *username)
|
|
{
|
|
int len = 0;
|
|
|
|
for (; *username; username++)
|
|
{
|
|
len++;
|
|
|
|
if(!IsUserChar(*username))
|
|
return 0;
|
|
}
|
|
|
|
if(len > USERLEN)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
clean_host(const char *host)
|
|
{
|
|
int len = 0;
|
|
|
|
for (; *host; host++)
|
|
{
|
|
len++;
|
|
|
|
if(!IsHostChar(*host))
|
|
return 0;
|
|
}
|
|
|
|
if(len > HOSTLEN)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
me_svslogin(struct Client *client_p, struct Client *source_p,
|
|
int parc, const char *parv[])
|
|
{
|
|
struct Client *target_p, *exist_p;
|
|
char nick[NICKLEN+1], login[NICKLEN+1];
|
|
char user[USERLEN+1], host[HOSTLEN+1];
|
|
int valid = 0;
|
|
|
|
if(!(source_p->flags & FLAGS_SERVICE))
|
|
return 0;
|
|
|
|
if((target_p = find_client(parv[1])) == NULL)
|
|
return 0;
|
|
|
|
if(!MyClient(target_p) && !IsUnknown(target_p))
|
|
return 0;
|
|
|
|
if(clean_nick(parv[2]))
|
|
{
|
|
rb_strlcpy(nick, parv[2], NICKLEN + 1);
|
|
valid |= NICK_VALID;
|
|
}
|
|
else if(*target_p->name)
|
|
rb_strlcpy(nick, target_p->name, NICKLEN + 1);
|
|
else
|
|
strcpy(nick, "*");
|
|
|
|
if(clean_username(parv[3]))
|
|
{
|
|
rb_strlcpy(user, parv[3], USERLEN + 1);
|
|
valid |= USER_VALID;
|
|
}
|
|
else
|
|
rb_strlcpy(user, target_p->username, USERLEN + 1);
|
|
|
|
if(clean_host(parv[4]))
|
|
{
|
|
rb_strlcpy(host, parv[4], HOSTLEN + 1);
|
|
valid |= HOST_VALID;
|
|
}
|
|
else
|
|
rb_strlcpy(host, target_p->host, HOSTLEN + 1);
|
|
|
|
if(*parv[5] == '*')
|
|
{
|
|
if(target_p->user)
|
|
rb_strlcpy(login, target_p->user->suser, NICKLEN + 1);
|
|
else
|
|
login[0] = '\0';
|
|
}
|
|
else if(!strcmp(parv[5], "0"))
|
|
login[0] = '\0';
|
|
else
|
|
rb_strlcpy(login, parv[5], NICKLEN + 1);
|
|
|
|
/* Login (mostly) follows nick rules. */
|
|
if(*login && !clean_nick(login))
|
|
return 0;
|
|
|
|
if((exist_p = find_person(nick)) && target_p != exist_p)
|
|
{
|
|
char buf[BUFSIZE];
|
|
|
|
if(MyClient(exist_p))
|
|
sendto_one(exist_p, ":%s KILL %s :(Nickname regained by services)",
|
|
me.name, exist_p->name);
|
|
|
|
exist_p->flags |= FLAGS_KILLED;
|
|
kill_client_serv_butone(NULL, exist_p, "%s (Nickname regained by services)",
|
|
me.name);
|
|
sendto_realops_snomask(SNO_SKILL, L_ALL,
|
|
"Nick collision due to SVSLOGIN on %s",
|
|
nick);
|
|
|
|
rb_snprintf(buf, sizeof(buf), "Killed (%s (Nickname regained by services))",
|
|
me.name);
|
|
exit_client(NULL, exist_p, &me, buf);
|
|
}else if((exist_p = find_client(nick)) && IsUnknown(exist_p) && exist_p != target_p) {
|
|
exit_client(NULL, exist_p, &me, "Overridden");
|
|
}
|
|
|
|
if(*login)
|
|
{
|
|
/* Strip leading digits, unless it's purely numeric. */
|
|
const char *p = login;
|
|
while(IsDigit(*p))
|
|
p++;
|
|
if(!*p)
|
|
p = login;
|
|
|
|
sendto_one(target_p, form_str(RPL_LOGGEDIN), me.name, EmptyString(target_p->name) ? "*" : target_p->name,
|
|
nick, user, host, p, p);
|
|
}
|
|
else
|
|
sendto_one(target_p, form_str(RPL_LOGGEDOUT), me.name, EmptyString(target_p->name) ? "*" : target_p->name,
|
|
nick, user, host);
|
|
|
|
if(IsUnknown(target_p))
|
|
{
|
|
struct User *user_p = make_user(target_p);
|
|
|
|
if(valid & NICK_VALID)
|
|
strcpy(target_p->preClient->spoofnick, nick);
|
|
|
|
if(valid & USER_VALID)
|
|
strcpy(target_p->preClient->spoofuser, user);
|
|
|
|
if(valid & HOST_VALID)
|
|
strcpy(target_p->preClient->spoofhost, host);
|
|
|
|
rb_strlcpy(user_p->suser, login, NICKLEN + 1);
|
|
}
|
|
else
|
|
{
|
|
char note[NICKLEN + 10];
|
|
|
|
send_signon(NULL, target_p, nick, user, host, rb_current_time(), login);
|
|
|
|
rb_snprintf(note, NICKLEN + 10, "Nick: %s", target_p->name);
|
|
rb_note(target_p->localClient->F, note);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ms_signon(struct Client *client_p, struct Client *source_p,
|
|
int parc, const char *parv[])
|
|
{
|
|
struct Client *target_p;
|
|
int newts, sameuser;
|
|
char login[NICKLEN+1];
|
|
|
|
if(!clean_nick(parv[1]))
|
|
{
|
|
ServerStats.is_kill++;
|
|
sendto_realops_snomask(SNO_DEBUG, L_ALL,
|
|
"Bad Nick from SIGNON: %s From: %s(via %s)",
|
|
parv[1], source_p->servptr->name, client_p->name);
|
|
/* if source_p has an id, kill_client_serv_butone() will
|
|
* send a kill to client_p, otherwise do it here */
|
|
if (!has_id(source_p))
|
|
sendto_one(client_p, ":%s KILL %s :%s (Bad nickname from SIGNON)",
|
|
get_id(&me, client_p), parv[1], me.name);
|
|
kill_client_serv_butone(client_p, source_p, "%s (Bad nickname from SIGNON)",
|
|
me.name);
|
|
source_p->flags |= FLAGS_KILLED;
|
|
exit_client(NULL, source_p, &me, "Bad nickname from SIGNON");
|
|
return 0;
|
|
}
|
|
|
|
if(!clean_username(parv[2]) || !clean_host(parv[3]))
|
|
{
|
|
ServerStats.is_kill++;
|
|
sendto_realops_snomask(SNO_DEBUG, L_ALL,
|
|
"Bad user@host from SIGNON: %s@%s From: %s(via %s)",
|
|
parv[2], parv[3], source_p->servptr->name, client_p->name);
|
|
/* if source_p has an id, kill_client_serv_butone() will
|
|
* send a kill to client_p, otherwise do it here */
|
|
if (!has_id(source_p))
|
|
sendto_one(client_p, ":%s KILL %s :%s (Bad user@host from SIGNON)",
|
|
get_id(&me, client_p), parv[1], me.name);
|
|
kill_client_serv_butone(client_p, source_p, "%s (Bad user@host from SIGNON)",
|
|
me.name);
|
|
source_p->flags |= FLAGS_KILLED;
|
|
exit_client(NULL, source_p, &me, "Bad user@host from SIGNON");
|
|
return 0;
|
|
}
|
|
|
|
newts = atol(parv[4]);
|
|
|
|
if(!strcmp(parv[5], "0"))
|
|
login[0] = '\0';
|
|
else if(*parv[5] != '*')
|
|
{
|
|
if (clean_nick(parv[5]))
|
|
rb_strlcpy(login, parv[5], NICKLEN + 1);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
target_p = find_named_client(parv[1]);
|
|
if(target_p != NULL && target_p != source_p)
|
|
{
|
|
/* In case of collision, follow NICK rules. */
|
|
/* XXX this is duplicated code and does not do SAVE */
|
|
if(IsUnknown(target_p))
|
|
exit_client(NULL, target_p, &me, "Overridden");
|
|
else
|
|
{
|
|
if(!newts || !target_p->tsinfo || (newts == target_p->tsinfo) || !source_p->user)
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Nick change collision from SIGNON from %s to %s(%s <- %s)(both killed)",
|
|
source_p->name, target_p->name, target_p->from->name,
|
|
client_p->name);
|
|
|
|
ServerStats.is_kill++;
|
|
sendto_one_numeric(target_p, ERR_NICKCOLLISION,
|
|
form_str(ERR_NICKCOLLISION), target_p->name);
|
|
|
|
kill_client_serv_butone(NULL, source_p, "%s (Nick change collision)", me.name);
|
|
|
|
ServerStats.is_kill++;
|
|
|
|
kill_client_serv_butone(NULL, target_p, "%s (Nick change collision)", me.name);
|
|
|
|
target_p->flags |= FLAGS_KILLED;
|
|
exit_client(NULL, target_p, &me, "Nick collision(new)");
|
|
source_p->flags |= FLAGS_KILLED;
|
|
exit_client(client_p, source_p, &me, "Nick collision(old)");
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
sameuser = !irccmp(target_p->username, source_p->username) &&
|
|
!irccmp(target_p->host, source_p->host);
|
|
|
|
if((sameuser && newts < target_p->tsinfo) ||
|
|
(!sameuser && newts > target_p->tsinfo))
|
|
{
|
|
if(sameuser)
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Nick change collision from SIGNON from %s to %s(%s <- %s)(older killed)",
|
|
source_p->name, target_p->name,
|
|
target_p->from->name, client_p->name);
|
|
else
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Nick change collision from SIGNON from %s to %s(%s <- %s)(newer killed)",
|
|
source_p->name, target_p->name,
|
|
target_p->from->name, client_p->name);
|
|
|
|
ServerStats.is_kill++;
|
|
|
|
sendto_one_numeric(target_p, ERR_NICKCOLLISION,
|
|
form_str(ERR_NICKCOLLISION), target_p->name);
|
|
|
|
/* kill the client issuing the nickchange */
|
|
kill_client_serv_butone(client_p, source_p,
|
|
"%s (Nick change collision)", me.name);
|
|
|
|
source_p->flags |= FLAGS_KILLED;
|
|
|
|
if(sameuser)
|
|
exit_client(client_p, source_p, &me, "Nick collision(old)");
|
|
else
|
|
exit_client(client_p, source_p, &me, "Nick collision(new)");
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
if(sameuser)
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Nick collision from SIGNON on %s(%s <- %s)(older killed)",
|
|
target_p->name, target_p->from->name,
|
|
client_p->name);
|
|
else
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Nick collision from SIGNON on %s(%s <- %s)(newer killed)",
|
|
target_p->name, target_p->from->name,
|
|
client_p->name);
|
|
|
|
sendto_one_numeric(target_p, ERR_NICKCOLLISION,
|
|
form_str(ERR_NICKCOLLISION), target_p->name);
|
|
|
|
/* kill the client who existed before hand */
|
|
kill_client_serv_butone(client_p, target_p,
|
|
"%s (Nick collision)", me.name);
|
|
|
|
ServerStats.is_kill++;
|
|
|
|
target_p->flags |= FLAGS_KILLED;
|
|
(void) exit_client(client_p, target_p, &me, "Nick collision");
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
send_signon(client_p, source_p, parv[1], parv[2], parv[3], newts, login);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
send_signon(struct Client *client_p, struct Client *target_p,
|
|
const char *nick, const char *user, const char *host,
|
|
unsigned int newts, const char *login)
|
|
{
|
|
sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s SIGNON %s %s %s %ld %s",
|
|
use_id(target_p), nick, user, host,
|
|
(long) target_p->tsinfo, *login ? login : "0");
|
|
|
|
strcpy(target_p->user->suser, login);
|
|
|
|
change_nick_user_host(target_p, nick, user, host, newts, "Signing %s (%s)", *login ? "in" : "out", nick);
|
|
}
|
|
|