| 1 |
/** |
| 2 |
* ns_ratelimitreg.C: Rate limits account registrations. |
| 3 |
* |
| 4 |
* Copyright © 2007 Pippijn van Steenhoven / The Ermyth Team |
| 5 |
* Rights to this code are as documented in COPYING. |
| 6 |
* |
| 7 |
* |
| 8 |
* Portions of this file were derived from sources bearing the following license: |
| 9 |
* Copyright © 2007 Jilles Tjoelker |
| 10 |
* Rights to this code are as documented in doc/pod/license.pod. |
| 11 |
* |
| 12 |
* $Id: ns_ratelimitreg.C,v 1.5 2007-09-16 18:54:43 pippijn Exp $ |
| 13 |
*/ |
| 14 |
|
| 15 |
#include "atheme.h" |
| 16 |
#include <libermyth.h> |
| 17 |
#include <account/myuser.h> |
| 18 |
#include <ermyth/module.h> |
| 19 |
|
| 20 |
static char const rcsid[] = "$Id: ns_ratelimitreg.C,v 1.5 2007-09-16 18:54:43 pippijn Exp $"; |
| 21 |
|
| 22 |
REGISTER_MODULE ("contrib/ns_ratelimitreg", false, "Jilles Tjoelker <jilles -at- stack.nl>"); |
| 23 |
|
| 24 |
/* settings */ |
| 25 |
int ratelimitreg_max = 5; /* allow this many account registrations */ |
| 26 |
int ratelimitreg_period = 60; /* in this time */ |
| 27 |
int ratelimitreg_wallops_period = 3600; /* send wallops at most once an hour */ |
| 28 |
|
| 29 |
/* dynamic state */ |
| 30 |
int ratelimitreg_count = 0; |
| 31 |
time_t ratelimitreg_firsttime = 0; |
| 32 |
|
| 33 |
static bool |
| 34 |
check_registration (sourceinfo_t *si, char const * const account, char const * const email) |
| 35 |
{ |
| 36 |
bool approved = true; |
| 37 |
static time_t lastwallops; |
| 38 |
|
| 39 |
if (ratelimitreg_firsttime + ratelimitreg_period > NOW) |
| 40 |
ratelimitreg_count = 0, ratelimitreg_firsttime = NOW; |
| 41 |
|
| 42 |
if (ratelimitreg_count > ratelimitreg_max && !has_priv (si, PRIV_FLOOD)) |
| 43 |
{ |
| 44 |
command_fail (si, fault::toomany, "The system is currently too busy to process your registration, please try again later."); |
| 45 |
approved = false; |
| 46 |
snoop ("REGISTER:THROTTLED: %s by \2%s\2", account, si->su != NULL ? si->su->nick : get_source_name (si)); |
| 47 |
if (lastwallops + ratelimitreg_wallops_period < NOW) |
| 48 |
{ |
| 49 |
wallops ("Registration of %s by %s was throttled.", account, get_oper_name (si)); |
| 50 |
lastwallops = NOW; |
| 51 |
} |
| 52 |
} |
| 53 |
|
| 54 |
return approved; |
| 55 |
} |
| 56 |
|
| 57 |
static void |
| 58 |
handle_register (myuser_t *mu) |
| 59 |
{ |
| 60 |
if (ratelimitreg_firsttime + ratelimitreg_period > NOW) |
| 61 |
ratelimitreg_count = 0, ratelimitreg_firsttime = NOW; |
| 62 |
ratelimitreg_count++; |
| 63 |
} |
| 64 |
|
| 65 |
bool |
| 66 |
_modinit (module *m) |
| 67 |
{ |
| 68 |
user_t::callback.can_register.attach (check_registration); |
| 69 |
myuser_t::callback.registered.attach (handle_register); |
| 70 |
|
| 71 |
return true; |
| 72 |
} |
| 73 |
|
| 74 |
void |
| 75 |
_moddeinit (void) |
| 76 |
{ |
| 77 |
user_t::callback.can_register.detach (check_registration); |
| 78 |
myuser_t::callback.registered.detach (handle_register); |
| 79 |
} |
