solanum-vs-hackint-and-char.../extensions/helpops.c
Elizabeth Myers 3c7d6fcce7 Message handlers should return void.
Also fix up some return values and stuff to use bool (or void if
nothing). I just did it whilst I was here.

According to jilles, the return value used to signify whether or not the
client had exited. This was error-prone and was fixed a long, long time
ago, but the return value was left int for historical reasons.

Since the return type is not used (and has no clear use case anyway),
it's safe to just get rid of it.
2016-03-09 01:37:03 -06:00

204 lines
5.2 KiB
C

/*
* Helpops system.
* -- kaniini
*/
#include "stdinc.h"
#include "modules.h"
#include "client.h"
#include "hook.h"
#include "ircd.h"
#include "send.h"
#include "s_conf.h"
#include "s_user.h"
#include "s_newconf.h"
#include "numeric.h"
static const char helpops_desc[] = "The helpops system as used by freenode";
static rb_dlink_list helper_list = { NULL, NULL, 0 };
static void h_hdl_stats_request(hook_data_int *hdata);
static void h_hdl_new_remote_user(struct Client *client_p);
static void h_hdl_client_exit(hook_data_client_exit *hdata);
static void h_hdl_umode_changed(hook_data_umode_changed *hdata);
static void h_hdl_whois(hook_data_client *hdata);
static void mo_dehelper(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void me_dehelper(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void do_dehelper(struct Client *source_p, struct Client *target_p);
mapi_hfn_list_av1 helpops_hfnlist[] = {
{ "doing_stats", (hookfn) h_hdl_stats_request },
{ "new_remote_user", (hookfn) h_hdl_new_remote_user },
{ "client_exit", (hookfn) h_hdl_client_exit },
{ "umode_changed", (hookfn) h_hdl_umode_changed },
{ "doing_whois", (hookfn) h_hdl_whois },
{ "doing_whois_global", (hookfn) h_hdl_whois },
{ NULL, NULL }
};
static int UMODE_HELPOPS = 0;
struct Message dehelper_msgtab = {
"DEHELPER", 0, 0, 0, 0,
{mg_unreg, mg_not_oper, mg_not_oper, mg_ignore, {me_dehelper, 2}, {mo_dehelper, 2}}
};
mapi_clist_av1 helpops_clist[] = { &dehelper_msgtab, NULL };
static void
mo_dehelper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
{
struct Client *target_p;
if (!IsOperAdmin(source_p))
{
sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "admin");
return;
}
if(!(target_p = find_named_person(parv[1])))
{
sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), parv[1]);
return;
}
if(MyClient(target_p))
do_dehelper(source_p, target_p);
else
sendto_one(target_p, ":%s ENCAP %s DEHELPER %s",
use_id(source_p), target_p->servptr->name, use_id(target_p));
}
static void
me_dehelper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
{
struct Client *target_p = find_person(parv[1]);
if(!target_p)
{
sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), parv[1]);
return;
}
if(!MyClient(target_p))
return;
do_dehelper(source_p, target_p);
}
static void
do_dehelper(struct Client *source_p, struct Client *target_p)
{
const char *fakeparv[4];
if(!(target_p->umodes & UMODE_HELPOPS))
return;
sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "%s is using DEHELPER on %s",
source_p->name, target_p->name);
sendto_one_notice(target_p, ":*** %s is using DEHELPER on you", source_p->name);
fakeparv[0] = fakeparv[1] = target_p->name;
fakeparv[2] = "-H";
fakeparv[3] = NULL;
user_mode(target_p, target_p, 3, fakeparv);
}
static int
_modinit(void)
{
/* add the usermode to the available slot */
user_modes['H'] = UMODE_HELPOPS = find_umode_slot();
construct_umodebuf();
return 0;
}
static void
_moddeinit(void)
{
/* disable the umode and remove it from the available list */
user_modes['H'] = UMODE_HELPOPS = 0;
construct_umodebuf();
}
static void
h_hdl_stats_request(hook_data_int *hdata)
{
struct Client *target_p;
rb_dlink_node *helper_ptr;
unsigned int count = 0;
if (hdata->arg2 != 'p')
return;
RB_DLINK_FOREACH (helper_ptr, helper_list.head)
{
target_p = helper_ptr->data;
if(target_p->user->away)
continue;
count++;
sendto_one_numeric(hdata->client, RPL_STATSDEBUG,
"p :%s (%s@%s)",
target_p->name, target_p->username,
target_p->host);
}
sendto_one_numeric(hdata->client, RPL_STATSDEBUG,
"p :%u staff members", count);
hdata->result = 1;
}
static void
h_hdl_new_remote_user(struct Client *client_p)
{
if (client_p->umodes & UMODE_HELPOPS)
rb_dlinkAddAlloc(client_p, &helper_list);
}
static void
h_hdl_client_exit(hook_data_client_exit *hdata)
{
if (hdata->target->umodes & UMODE_HELPOPS)
rb_dlinkFindDestroy(hdata->target, &helper_list);
}
static void
h_hdl_umode_changed(hook_data_umode_changed *hdata)
{
struct Client *source_p = hdata->client;
/* didn't change +H umode, we don't need to do anything */
if (!((hdata->oldumodes ^ source_p->umodes) & UMODE_HELPOPS))
return;
if (source_p->umodes & UMODE_HELPOPS)
{
if (MyClient(source_p) && !HasPrivilege(source_p, "usermode:helpops"))
{
source_p->umodes &= ~UMODE_HELPOPS;
sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "usermode:helpops");
return;
}
rb_dlinkAddAlloc(source_p, &helper_list);
}
else if (!(source_p->umodes & UMODE_HELPOPS))
rb_dlinkFindDestroy(source_p, &helper_list);
}
static void
h_hdl_whois(hook_data_client *hdata)
{
struct Client *source_p = hdata->client;
struct Client *target_p = hdata->target;
if ((target_p->umodes & UMODE_HELPOPS) && EmptyString(target_p->user->away))
{
sendto_one_numeric(source_p, RPL_WHOISHELPOP, form_str(RPL_WHOISHELPOP), target_p->name);
}
}
DECLARE_MODULE_AV2(helpops, _modinit, _moddeinit, helpops_clist, NULL, helpops_hfnlist, NULL, NULL, helpops_desc);