/*
* check_klines
* inputs - NONE
* output - NONE
* side effects - Check all connections for a pending kline against the
* client, exit the client if a kline matches.
*/
void
check_klines(void)
{
struct Client *client_p; /* current local client_p being examined */
struct ConfItem *aconf = (struct ConfItem *)NULL;
char *reason; /* pointer to reason string */
dlink_node *ptr, *next_ptr;
for (ptr = lclient_list.head; ptr; ptr = next_ptr)
{
next_ptr = ptr->next;
client_p = ptr->data;
if (IsMe(client_p))
continue;
/* if there is a returned struct ConfItem then kill it */
if ((aconf = find_dline(&client_p->localClient->ip,
client_p->localClient->aftype)))
{
if (aconf->status & CONF_EXEMPTDLINE)
continue;
sendto_realops_flags(FLAGS_ALL, L_ALL,"DLINE active for %s",
get_client_name(client_p, HIDE_IP));
if (ConfigFileEntry.kline_with_connection_closed &&
ConfigFileEntry.kline_with_reason)
{
reason = "Connection closed";
if(IsPerson(client_p))
sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP),
me.name, client_p->name,
aconf->passwd ? aconf->passwd : "D-lined");
else
sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined");
}
else
{
if(ConfigFileEntry.kline_with_connection_closed)
reason = "Connection closed";
else if(ConfigFileEntry.kline_with_reason && aconf->passwd)
reason = aconf->passwd;
else
reason = "D-lined";
if(IsPerson(client_p))
sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP),
me.name, client_p->name, reason);
else
sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined");
}
(void)exit_client(client_p, client_p, &me, reason);
continue; /* and go examine next fd/client_p */
}
if (IsPerson(client_p))
{
if (ConfigFileEntry.glines &&
(aconf = find_gkill(client_p, client_p->username)))
{
if (IsExemptKline(client_p))
{
sendto_realops_flags(FLAGS_ALL, L_ALL,
"GLINE over-ruled for %s, client is kline_exempt",
get_client_name(client_p, HIDE_IP));
continue;
}
if (IsExemptGline(client_p))
{
sendto_realops_flags(FLAGS_ALL, L_ALL,
"GLINE over-ruled for %s, client is gline_exempt",
get_client_name(client_p, HIDE_IP));
continue;
}
sendto_realops_flags(FLAGS_ALL, L_ALL, "GLINE active for %s",
get_client_name(client_p, HIDE_IP));
if(ConfigFileEntry.kline_with_connection_closed &&
ConfigFileEntry.kline_with_reason)
{
reason = "Connection closed";
sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP),
me.name, client_p->name,
aconf->passwd ? aconf->passwd : "G-lined");
}
else
{
if(ConfigFileEntry.kline_with_connection_closed)
reason = "Connection closed";
else if(ConfigFileEntry.kline_with_reason && aconf->passwd)
reason = aconf->passwd;
else
reason = "G-lined";
sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP),
me.name, client_p->name, reason);
}
(void)exit_client(client_p, client_p, &me, reason);
/* and go examine next fd/client_p */
continue;
}
else if((aconf = find_kill(client_p)))
{
/* if there is a returned struct ConfItem.. then kill it */
if (IsExemptKline(client_p))
{
sendto_realops_flags(FLAGS_ALL, L_ALL,
"KLINE over-ruled for %s, client is kline_exempt",
get_client_name(client_p, HIDE_IP));
continue;
}
sendto_realops_flags(FLAGS_ALL, L_ALL, "KLINE active for %s",
get_client_name(client_p, HIDE_IP));
if(ConfigFileEntry.kline_with_connection_closed &&
ConfigFileEntry.kline_with_reason)
{
reason = "Connection closed";
sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP),
me.name, client_p->name,
aconf->passwd ? aconf->passwd : "K-lined");
}
else
{
if(ConfigFileEntry.kline_with_connection_closed)
reason = "Connection closed";
else if(ConfigFileEntry.kline_with_reason && aconf->passwd)
reason = aconf->passwd;
else
reason = "K-lined";
sendto_one(client_p, form_str(ERR_YOUREBANNEDCREEP),
me.name, client_p->name, reason);
}
(void)exit_client(client_p, client_p, &me, reason);
continue;
}
}
}
/* also check the unknowns list for new dlines */
for (ptr = unknown_list.head; ptr; ptr = next_ptr)
{
next_ptr = ptr->next;
client_p = ptr->data;
if((aconf = find_dline(&client_p->localClient->ip,
client_p->localClient->aftype)))
{
if(aconf->status & CONF_EXEMPTDLINE)
continue;
sendto_one(client_p, "NOTICE DLINE :*** You have been D-lined");
exit_client(client_p, client_p, &me, "D-lined");
}
}
}
static time_t check_pings(time_t currenttime)
{
register aClient *cptr; /* current local cptr being examined */
aConfItem *aconf = (aConfItem *)NULL;
int ping = 0; /* ping time value from client */
int i; /* used to index through fd/cptr's */
time_t oldest = 0; /* next ping time */
time_t timeout; /* found necessary ping time */
char *reason; /* pointer to reason string */
int die_index=0; /* index into list */
char ping_time_out_buffer[64]; /* blech that should be a define */
/* of dying clients */
dying_clients[0] = (aClient *)NULL; /* mark first one empty */
/*
* I re-wrote the way klines are handled. Instead of rescanning
* the local[] array and calling exit_client() right away, I
* mark the client thats dying by placing a pointer to its aClient
* into dying_clients[]. When I have examined all in local[],
* I then examine the dying_clients[] for aClient's to exit.
* This saves the rescan on k-lines, also greatly simplifies the code,
*
* Jan 28, 1998
* -Dianora
*/
for (i = 0; i <= highest_fd; i++)
{
if (!(cptr = local[i]) || IsMe(cptr) || IsLog(cptr))
continue; /* and go examine next fd/cptr */
/*
** Note: No need to notify opers here. It's
** already done when "FLAGS_DEADSOCKET" is set.
*/
if (cptr->flags & FLAGS_DEADSOCKET)
{
/* N.B. EVERY single time dying_clients[] is set
* it must be followed by an immediate continue,
* to prevent this cptr from being marked again for exit.
* If you don't, you could cause exit_client() to be called twice
* for the same cptr. i.e. bad news
* -Dianora
*/
dying_clients[die_index] = cptr;
dying_clients_reason[die_index++] =
((cptr->flags & FLAGS_SENDQEX) ?
"SendQ exceeded" : "Dead socket");
dying_clients[die_index] = (aClient *)NULL;
continue; /* and go examine next fd/cptr */
}
if (rehashed)
{
if(dline_in_progress)
{
if(IsPerson(cptr))
{
if( (aconf = find_dkill(cptr)) ) /* if there is a returned
aConfItem then kill it */
{
sendto_ops("D-line active for %s",
get_client_name(cptr, FALSE));
dying_clients[die_index] = cptr;
#ifdef KLINE_WITH_REASON
reason = aconf->passwd ? aconf->passwd : "D-lined";
dying_clients_reason[die_index++] = reason;
#else
dying_clients_reason[die_index++] = "D-lined";
#endif
dying_clients[die_index] = (aClient *)NULL;
sendto_one(cptr, err_str(ERR_YOUREBANNEDCREEP),
me.name, cptr->name, reason);
continue; /* and go examine next fd/cptr */
}
}
}
else
{
if(IsPerson(cptr))
{
#ifdef GLINES
if( (aconf = find_gkill(cptr)) )
{
sendto_ops("G-line active for %s",
get_client_name(cptr, FALSE));
dying_clients[die_index] = cptr;
#ifdef KLINE_WITH_REASON
reason = aconf->passwd ? aconf->passwd : "G-lined";
dying_clients_reason[die_index++] = reason;
#else
dying_clients_reason[die_index++] = "G-lined";
#endif
dying_clients[die_index] = (aClient *)NULL;
sendto_one(cptr, err_str(ERR_YOUREBANNEDCREEP),
me.name, cptr->name, reason);
continue; /* and go examine next fd/cptr */
}
else
#endif
if((aconf = find_kill(cptr))) /* if there is a returned
aConfItem.. then kill it */
{
sendto_ops("K-line active for %s",
get_client_name(cptr, FALSE));
dying_clients[die_index] = cptr;
#ifdef KLINE_WITH_REASON
#ifdef K_COMMENT_ONLY
reason = aconf->passwd ? aconf->passwd : "K-lined";
#else
reason = (BadPtr(aconf->passwd) ||
!is_comment(aconf->passwd)) ?
"K-lined" : aconf->passwd;
#endif
dying_clients_reason[die_index++] = reason;
#else
dying_clients_reason[die_index++] = "K-lined";
#endif
dying_clients[die_index] = (aClient *)NULL;
sendto_one(cptr, err_str(ERR_YOUREBANNEDCREEP),
me.name, cptr->name, reason);
continue; /* and go examine next fd/cptr */
}
}
}
}
#ifdef IDLE_CHECK
if (IsPerson(cptr))
{
if( !IsElined(cptr) && ((timeofday - cptr->user->last) > idle_time))
{
aConfItem *aconf;
dying_clients[die_index] = cptr;
dying_clients_reason[die_index++] = "idle exceeder";
dying_clients[die_index] = (aClient *)NULL;
aconf = make_conf();
aconf->status = CONF_KILL;
DupString(aconf->host, cptr->user->host);
DupString(aconf->passwd, "idle exceeder" );
DupString(aconf->name, cptr->user->username);
aconf->port = 0;
aconf->hold = timeofday + 60;
add_temp_kline(aconf);
sendto_ops("Idle exceeder %s temp k-lining",
get_client_name(cptr,FALSE));
continue; /* and go examine next fd/cptr */
}
}
#endif
#ifdef REJECT_HOLD
if (IsRejectHeld(cptr))
{
if( timeofday > (cptr->firsttime + REJECT_HOLD_TIME) )
{
dying_clients[die_index] = cptr;
dying_clients_reason[die_index++] = "reject held client";
dying_clients[die_index] = (aClient *)NULL;
continue; /* and go examine next fd/cptr */
}
}
#endif
#if defined(R_LINES) && defined(R_LINES_OFTEN)
/*
* this is used for KILL lines with time restrictions
* on them - send a message to the user being killed
* first.
* *** Moved up above -taner ***
*
* Moved here, no more rflag -Dianora
*/
if (IsPerson(cptr) && find_restrict(cptr))
{
sendto_ops("Restricting %s, closing link.",
get_client_name(cptr,FALSE));
dying_clients[die_index] = cptr;
dying_clients_reason[die_index++] = "you have been R-lined";
dying_clients[die_index] = (aClient *)NULL;
continue; /* and go examine next fd/cptr */
}
#endif
if (!IsRegistered(cptr))
ping = CONNECTTIMEOUT;
else
ping = get_client_ping(cptr);
/*
* Ok, so goto's are ugly and can be avoided here but this code
* is already indented enough so I think its justified. -avalon
*/
/* if (!rflag &&
(ping >= currenttime - cptr->lasttime))
goto ping_timeout; */
/*
* *sigh* I think not -Dianora
*/
if (ping < (currenttime - cptr->lasttime))
{
/*
* If the server hasnt talked to us in 2*ping seconds
* and it has a ping time, then close its connection.
* If the client is a user and a KILL line was found
* to be active, close this connection too.
*/
if (((currenttime - cptr->lasttime) >= (2 * ping) &&
(cptr->flags & FLAGS_PINGSENT)) ||
((!IsRegistered(cptr) && (currenttime - cptr->since) >= ping)))
{
if (!IsRegistered(cptr) &&
(DoingDNS(cptr) || DoingAuth(cptr)))
{
if (cptr->authfd >= 0)
{
(void)close(cptr->authfd);
cptr->authfd = -1;
cptr->count = 0;
*cptr->buffer = '\0';
}
#ifdef SHOW_HEADERS
if (DoingDNS(cptr))
send(cptr->fd, REPORT_FAIL_DNS, R_fail_dns, 0);
else
send(cptr->fd, REPORT_FAIL_ID, R_fail_id, 0);
#endif
Debug((DEBUG_NOTICE,"DNS/AUTH timeout %s",
get_client_name(cptr,TRUE)));
del_queries((char *)cptr);
ClearAuth(cptr);
ClearDNS(cptr);
SetAccess(cptr);
cptr->since = currenttime;
continue;
}
if (IsServer(cptr) || IsConnecting(cptr) ||
IsHandshake(cptr))
{
sendto_ops("No response from %s, closing link",
get_client_name(cptr, FALSE));
}
/*
* this is used for KILL lines with time restrictions
* on them - send a messgae to the user being killed
* first.
* *** Moved up above -taner ***
*/
cptr->flags2 |= FLAGS2_PING_TIMEOUT;
dying_clients[die_index++] = cptr;
/* the reason is taken care of at exit time */
/* dying_clients_reason[die_index++] = "Ping timeout"; */
dying_clients[die_index] = (aClient *)NULL;
/*
* need to start loop over because the close can
* affect the ordering of the local[] array.- avalon
*
** Not if you do it right - Dianora
*/
continue;
}
else if ((cptr->flags & FLAGS_PINGSENT) == 0)
{
/*
* if we havent PINGed the connection and we havent
* heard from it in a while, PING it to make sure
* it is still alive.
*/
cptr->flags |= FLAGS_PINGSENT;
/* not nice but does the job */
cptr->lasttime = currenttime - ping;
sendto_one(cptr, "PING :%s", me.name);
}
}
/* ping_timeout: */
timeout = cptr->lasttime + ping;
while (timeout <= currenttime)
timeout += ping;
if (timeout < oldest || !oldest)
oldest = timeout;
/*
* Check UNKNOWN connections - if they have been in this state
* for > 100s, close them.
*/
if (IsUnknown(cptr))
{
if (cptr->firsttime ? ((timeofday - cptr->firsttime) > 100) : 0)
{
dying_clients[die_index] = cptr;
dying_clients_reason[die_index++] = "Connection Timed Out";
dying_clients[die_index] = (aClient *)NULL;
continue;
}
}
}
/* Now exit clients marked for exit above.
* it doesn't matter if local[] gets re-arranged now
*
* -Dianora
*/
for(die_index = 0; (cptr = dying_clients[die_index]); die_index++)
{
if(cptr->flags2 & FLAGS2_PING_TIMEOUT)
{
(void)ircsprintf(ping_time_out_buffer,
"Ping timeout: %d seconds",
currenttime - cptr->lasttime);
(void)exit_client(cptr, cptr, &me, ping_time_out_buffer );
}
else
(void)exit_client(cptr, cptr, &me, dying_clients_reason[die_index]);
}
rehashed = 0;
dline_in_progress = 0;
if (!oldest || oldest < currenttime)
oldest = currenttime + PINGFREQUENCY;
Debug((DEBUG_NOTICE,"Next check_ping() call at: %s, %d %d %d",
myctime(oldest), ping, oldest, currenttime));
return (oldest);
}
