solanum-vs-hackint-and-char.../extensions/override.c
2010-12-06 23:55:42 -06:00

204 lines
4.6 KiB
C

/*
* oper-override for charybdis.
*
* adds usermode +p and has a timer event that is iterated over to disable
* usermode +p after a while...
*
* you need to have oper:override permission on the opers you want to be
* able to use this extension.
*/
#include "stdinc.h"
#include "modules.h"
#include "hook.h"
#include "client.h"
#include "ircd.h"
#include "send.h"
#include "hash.h"
#include "s_conf.h"
#include "s_user.h"
#include "s_serv.h"
#include "numeric.h"
#include "privilege.h"
#include "s_newconf.h"
static void check_umode_change(void *data);
static void hack_channel_access(void *data);
static void hack_can_join(void *data);
mapi_hfn_list_av1 override_hfnlist[] = {
{ "umode_changed", (hookfn) check_umode_change },
{ "get_channel_access", (hookfn) hack_channel_access },
{ "can_join", (hookfn) hack_can_join },
{ NULL, NULL }
};
#define IsOperOverride(x) (HasPrivilege((x), "oper:override"))
struct OverrideSession {
rb_dlink_node node;
struct Client *client;
time_t deadline;
};
rb_dlink_list overriding_opers = { NULL, NULL, 0 };
static void
update_session_deadline(struct Client *source_p, struct OverrideSession *session_p)
{
if (session_p == NULL)
{
rb_dlink_node *n;
RB_DLINK_FOREACH(n, overriding_opers.head)
{
struct OverrideSession *s = n->data;
if (s->client == source_p)
{
session_p = s;
break;
}
}
}
if (session_p == NULL)
{
session_p = rb_malloc(sizeof(struct OverrideSession));
session_p->client = source_p;
}
session_p->deadline = rb_current_time() + 1800;
rb_dlinkDelete(&session_p->node, &overriding_opers);
rb_dlinkAdd(session_p, &session_p->node, &overriding_opers);
}
static void
expire_override_deadlines(void *unused)
{
rb_dlink_node *n, *tn;
RB_DLINK_FOREACH_SAFE(n, tn, overriding_opers.head)
{
struct OverrideSession *session_p = n->data;
if (session_p->deadline > rb_current_time())
break;
else if (session_p->deadline < rb_current_time())
{
const char *parv[4] = {session_p->client->name, session_p->client->name, "-p", NULL};
user_mode(session_p->client, session_p->client, 3, parv);
}
}
}
static void
check_umode_change(void *vdata)
{
hook_data_umode_changed *data = (hook_data_umode_changed *)vdata;
struct Client *source_p = data->client;
if (!MyClient(source_p))
return;
/* didn't change +p umode, we don't need to do anything */
if (!((data->oldumodes ^ source_p->umodes) & user_modes['p']))
return;
if (!IsOperOverride(source_p))
{
source_p->umodes &= ~user_modes['p'];
return;
}
if (source_p->umodes & user_modes['p'])
{
update_session_deadline(source_p, NULL);
sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s has enabled oper-override (+p)",
get_oper_name(source_p));
}
else if (!(source_p->umodes & user_modes['p']))
{
rb_dlink_node *n, *tn;
RB_DLINK_FOREACH_SAFE(n, tn, overriding_opers.head)
{
struct OverrideSession *session_p = n->data;
if (session_p->client != source_p)
continue;
sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s has disabled oper-override (+p)",
get_oper_name(session_p->client));
rb_dlinkDelete(n, &overriding_opers);
rb_free(session_p);
}
}
}
static void
hack_channel_access(void *vdata)
{
hook_data_channel_approval *data = (hook_data_channel_approval *) vdata;
if (data->approved == CHFL_CHANOP)
return;
if (data->client->umodes & user_modes['p'])
{
update_session_deadline(data->client, NULL);
data->approved = CHFL_CHANOP;
sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using oper-override on %s (modehacking)",
get_oper_name(data->client), data->chptr->chname);
}
}
static void
hack_can_join(void *vdata)
{
hook_data_channel *data = (hook_data_channel *) vdata;
if (data->approved == 0)
return;
if (data->client->umodes & user_modes['p'])
{
update_session_deadline(data->client, NULL);
data->approved = 0;
sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using oper-override on %s (banwalking)",
get_oper_name(data->client), data->chptr->chname);
}
}
struct ev_entry *expire_override_deadlines_ev = NULL;
static int
_modinit(void)
{
/* add the usermode to the available slot */
user_modes['p'] = find_umode_slot();
construct_umodebuf();
expire_override_deadlines_ev = rb_event_add("expire_override_deadlines", expire_override_deadlines, NULL, 60);
return 0;
}
static void
_moddeinit(void)
{
/* disable the umode and remove it from the available list */
user_modes['p'] = 0;
construct_umodebuf();
rb_event_delete(expire_override_deadlines_ev);
}
DECLARE_MODULE_AV1(override, _modinit, _moddeinit, NULL, NULL,
override_hfnlist, "$Revision: 3526 $");