/** Debit a player's quota, if they can afford it.
* \param who player whose quota is to be debitted.
* \param cost amount of quota to be charged.
* \retval 1 quota successfully debitted.
* \retval 0 not enough quota to debit.
*/
static int
pay_quota(dbref who, int cost)
{
int curr;
/* figure out how much we have, and if it's big enough */
curr = get_current_quota(who);
if (USE_QUOTA && !NoQuota(who) && (curr - cost < 0)) /* not enough */
return 0;
change_quota(who, -cost);
return 1;
}
/** Change an object's owner.
* \verbatim
* This implements @chown.
* \endverbatim
* \param player the enactor.
* \param name name of object to change owner of.
* \param newobj name of new owner for object.
* \param preserve if 1, preserve privileges and don't halt the object.
* \param pe_info the pe_info for lock checks
*/
void
do_chown(dbref player, const char *name, const char *newobj, int preserve,
NEW_PE_INFO *pe_info)
{
dbref thing;
dbref newowner = NOTHING;
long match_flags = MAT_POSSESSION | MAT_HERE | MAT_EXIT | MAT_ABSOLUTE;
/* check for '@chown <object>/<atr>=<player>' */
if (strchr(name, '/')) {
do_atrchown(player, name, newobj);
return;
}
if (Wizard(player))
match_flags |= MAT_PLAYER;
if ((thing = noisy_match_result(player, name, TYPE_THING, match_flags))
== NOTHING)
return;
if (!*newobj || !strcasecmp(newobj, "me")) {
newowner = player;
} else {
if ((newowner = lookup_player(newobj)) == NOTHING) {
notify(player, T("I couldn't find that player."));
return;
}
}
if (IsPlayer(thing) && !God(player)) {
notify(player, T("Players always own themselves."));
return;
}
/* Permissions checking */
if (!chown_ok(player, thing, newowner, pe_info)) {
notify(player, T("Permission denied."));
return;
}
if (IsThing(thing) && !Hasprivs(player) &&
!(GoodObject(Location(thing)) && (Location(thing) == player))) {
notify(player, T("You must carry the object to @chown it."));
return;
}
if (preserve && !Wizard(player)) {
notify(player, T("You cannot @CHOWN/PRESERVE. Use normal @CHOWN."));
return;
}
/* chowns to the zone master don't count towards fees */
if (!ZMaster(newowner)) {
/* Debit the owner-to-be */
if (!can_pay_fees(newowner, Pennies(thing))) {
/* not enough money or quota */
if (newowner != player)
notify(player,
T
("That player doesn't have enough money or quota to receive that object."));
return;
}
/* Credit the current owner */
giveto(Owner(thing), Pennies(thing));
change_quota(Owner(thing), QUOTA_COST);
}
chown_object(player, thing, newowner, preserve);
notify(player, T("Owner changed."));
}
