// object.cpp -- Low-level object manipulation routines.
//
// $Id: object.cpp,v 1.15 2005/06/28 21:47:10 sdennis Exp $
//
#include "copyright.h"
#include "autoconf.h"
#include "config.h"
#include "externs.h"
#include "attrs.h"
#include "command.h"
#include "mguests.h"
#include "powers.h"
#define IS_CLEAN(i) (isGarbage(i) && Going(i) && \
((i) >= 0) && ((i) < mudstate.db_top) && \
(Location(i) == NOTHING) && \
(Contents(i) == NOTHING) && (Exits(i) == NOTHING) && \
(Next(i) == NOTHING) && (Owner(i) == GOD))
static int check_type;
/*
* ---------------------------------------------------------------------------
* * Log_pointer_err, Log_header_err, Log_simple_damage: Write errors to the
* * log file.
*/
static void Log_pointer_err(dbref prior, dbref obj, dbref loc, dbref ref,
const char *reftype, const char *errtype)
{
STARTLOG(LOG_PROBLEMS, "OBJ", "DAMAG");
log_type_and_name(obj);
if (loc != NOTHING)
{
log_text(" in ");
log_type_and_name(loc);
}
log_text(": ");
if (prior == NOTHING)
{
log_text(reftype);
}
else
{
log_text("Next pointer");
}
log_text(" ");
log_type_and_name(ref);
log_text(" ");
log_text(errtype);
ENDLOG;
}
static void Log_header_err(dbref obj, dbref loc, dbref val, bool is_object,
const char *valtype, const char *errtype)
{
STARTLOG(LOG_PROBLEMS, "OBJ", "DAMAG");
log_type_and_name(obj);
if (loc != NOTHING)
{
log_text(" in ");
log_type_and_name(loc);
}
log_text(": ");
log_text(valtype);
log_text(" ");
if (is_object)
{
log_type_and_name(val);
}
else
{
log_number(val);
}
log_text(" ");
log_text(errtype);
ENDLOG;
}
static void Log_simple_err(dbref obj, dbref loc, const char *errtype)
{
STARTLOG(LOG_PROBLEMS, "OBJ", "DAMAG");
log_type_and_name(obj);
if (loc != NOTHING)
{
log_text(" in ");
log_type_and_name(loc);
}
log_text(": ");
log_text(errtype);
ENDLOG;
}
/*
* ---------------------------------------------------------------------------
* * start_home, default_home, can_set_home, new_home, clone_home:
* * Routines for validating and determining homes.
*/
dbref start_home(void)
{
if (mudconf.start_home != NOTHING)
{
return mudconf.start_home;
}
return mudconf.start_room;
}
dbref default_home(void)
{
if (mudconf.default_home != NOTHING)
{
return mudconf.default_home;
}
if (mudconf.start_home != NOTHING)
{
return mudconf.start_home;
}
return mudconf.start_room;
}
bool can_set_home(dbref player, dbref thing, dbref home)
{
if ( !Good_obj(player)
|| !Good_obj(home)
|| thing == home)
{
return false;
}
switch (Typeof(home))
{
case TYPE_PLAYER:
case TYPE_ROOM:
case TYPE_THING:
if (Going(home))
{
return false;
}
if ( Controls(player, home)
|| Abode(home))
{
return true;
}
}
return false;
}
dbref new_home(dbref player)
{
dbref loc = Location(player);
if (can_set_home(Owner(player), player, loc))
{
return loc;
}
loc = Home(Owner(player));
if (can_set_home(Owner(player), player, loc))
{
return loc;
}
return default_home();
}
dbref clone_home(dbref player, dbref thing)
{
dbref loc = Home(thing);
if (can_set_home(Owner(player), player, loc))
{
return loc;
}
return new_home(player);
}
/*
* ---------------------------------------------------------------------------
* * create_obj: Create an object of the indicated type IF the player can
* * afford it.
*/
dbref create_obj(dbref player, int objtype, const char *name, int cost)
{
dbref obj, owner;
int quota = 0, value = 0, nValidName;
FLAGSET f;
char *buff;
const char *pValidName;
const char *tname;
bool okname = false, self_owned = false, require_inherit = false;
switch (objtype)
{
case TYPE_ROOM:
cost = mudconf.digcost;
quota = mudconf.room_quota;
f = mudconf.room_flags;
pValidName = MakeCanonicalObjectName(name, &nValidName, &okname);
tname = "a room";
break;
case TYPE_THING:
if (cost < mudconf.createmin)
cost = mudconf.createmin;
if (cost > mudconf.createmax)
cost = mudconf.createmax;
quota = mudconf.thing_quota;
f = mudconf.thing_flags;
value = OBJECT_ENDOWMENT(cost);
pValidName = MakeCanonicalObjectName(name, &nValidName, &okname);
tname = "a thing";
break;
case TYPE_EXIT:
cost = mudconf.opencost;
quota = mudconf.exit_quota;
f = mudconf.exit_flags;
pValidName = MakeCanonicalExitName(name, &nValidName, &okname);
tname = "an exit";
break;
case TYPE_PLAYER:
if (cost)
{
cost = mudconf.robotcost;
quota = mudconf.player_quota;
f = mudconf.robot_flags;
value = 0;
tname = "a robot";
require_inherit = true;
}
else
{
cost = 0;
quota = 0;
f = mudconf.player_flags;
value = mudconf.paystart;
quota = mudconf.start_quota;
self_owned = true;
tname = "a player";
}
buff = munge_space(name);
pValidName = name;
if (!badname_check(buff))
{
notify(player, "That name is not allowed.");
free_lbuf(buff);
return NOTHING;
}
if (*buff)
{
okname = ValidatePlayerName(buff);
if (!okname)
{
notify(player, "That's a silly name for a player.");
free_lbuf(buff);
return NOTHING;
}
}
if (okname)
{
okname = (lookup_player(NOTHING, buff, false) == NOTHING);
if (!okname)
{
notify(player, tprintf("The name %s is already taken.", name));
free_lbuf(buff);
return NOTHING;
}
}
free_lbuf(buff);
break;
default:
LOG_SIMPLE(LOG_BUGS, "BUG", "OTYPE", tprintf("Bad object type in create_obj: %d.", objtype));
return NOTHING;
}
if (!okname)
{
notify(player, tprintf("That's a silly name for %s!", tname));
return NOTHING;
}
if (!self_owned)
{
if (!Good_obj(player))
{
return NOTHING;
}
owner = Owner(player);
if (!Good_obj(owner))
{
return NOTHING;
}
}
else
{
owner = NOTHING;
}
if (require_inherit)
{
if (!Inherits(player))
{
notify(player, NOPERM_MESSAGE);
return NOTHING;
}
}
// Make sure the creator can pay for the object.
//
if ((player != NOTHING) && !canpayfees(player, player, cost, quota))
{
return NOTHING;
}
// Get the first object from the freelist. If the object is not clean,
// discard the remainder of the freelist and go get a completely new object.
//
obj = NOTHING;
if (mudstate.freelist != NOTHING)
{
obj = mudstate.freelist;
if (IS_CLEAN(obj))
{
mudstate.freelist = Link(obj);
}
else
{
LOG_SIMPLE(LOG_PROBLEMS, "FRL", "DAMAG", tprintf("Freelist damaged, bad object #%d.", obj));
obj = NOTHING;
mudstate.freelist = NOTHING;
}
}
if (obj == NOTHING)
{
obj = mudstate.db_top;
db_grow(mudstate.db_top + 1);
}
atr_free(obj); // just in case.
// Set things up according to the object type.
//
s_Location(obj, NOTHING);
s_Contents(obj, NOTHING);
s_Exits(obj, NOTHING);
s_Next(obj, NOTHING);
s_Link(obj, NOTHING);
s_Parent(obj, NOTHING);
if (mudconf.autozone && player != NOTHING)
{
s_Zone(obj, Zone(player));
}
else
{
s_Zone(obj, NOTHING);
}
f.word[FLAG_WORD1] |= objtype;
db[obj].fs = f;
s_Owner(obj, (self_owned ? obj : owner));
s_Pennies(obj, value);
Unmark(obj);
pValidName = munge_space(pValidName);
s_Name(obj, pValidName);
free_lbuf(pValidName);
db[obj].cpu_time_used.Set100ns(0);
db[obj].tThrottleExpired.Set100ns(0);
s_ThAttrib(obj, 0);
s_ThMail(obj, 0);
CLinearTimeAbsolute ltaNow;
ltaNow.GetLocal();
buff = ltaNow.ReturnDateString(7);
atr_add_raw(obj, A_CREATED, buff);
atr_add_raw(obj, A_MODIFIED, buff);
if (objtype == TYPE_PLAYER)
{
atr_add_raw(obj, A_LAST, buff);
buff = alloc_sbuf("create_obj.quota");
mux_ltoa(quota, buff);
atr_add_raw(obj, A_QUOTA, buff);
atr_add_raw(obj, A_RQUOTA, buff);
add_player_name(obj, Name(obj));
free_sbuf(buff);
s_Zone(obj, NOTHING);
}
return obj;
}
extern void stack_clr(dbref obj);
/*
* ---------------------------------------------------------------------------
* * destroy_obj: Destroy an object. Assumes it has already been removed from
* * all lists and has no contents or exits.
*/
void destroy_bad_obj(dbref obj)
{
if (!mudstate.bStandAlone)
{
halt_que(NOTHING, obj);
nfy_que(obj, A_SEMAPHORE, NFY_DRAIN, 0);
fwdlist_clr(obj);
stack_clr(obj);
ReleaseAllResources(obj);
}
atr_free(obj);
s_Name(obj, NULL);
s_Flags(obj, FLAG_WORD1, (TYPE_GARBAGE | GOING));
s_Flags(obj, FLAG_WORD2, 0);
s_Flags(obj, FLAG_WORD3, 0);
s_Powers(obj, 0);
s_Powers2(obj, 0);
s_Location(obj, NOTHING);
s_Contents(obj, NOTHING);
s_Exits(obj, NOTHING);
s_Next(obj, NOTHING);
s_Link(obj, NOTHING);
s_Owner(obj, GOD);
s_Pennies(obj, 0);
s_Parent(obj, NOTHING);
s_Zone(obj, NOTHING);
}
void destroy_obj(dbref obj)
{
if (!Good_obj(obj))
{
if ( (obj >= 0)
&& (obj < mudstate.db_top))
{
destroy_bad_obj(obj);
}
return;
}
// Validate the owner.
//
dbref owner = Owner(obj);
bool good_owner = Good_owner(owner);
// Halt any pending commands (waiting or semaphore).
//
if (!mudstate.bStandAlone)
{
if ( halt_que(NOTHING, obj) > 0
&& good_owner
&& !Quiet(obj)
&& !Quiet(owner))
{
notify(owner, "Halted.");
}
nfy_que(obj, A_SEMAPHORE, NFY_DRAIN, 0);
// Remove forwardlists and stacks.
//
fwdlist_clr(obj);
stack_clr(obj);
}
// Compensate the owner for the object.
//
if ( good_owner
&& owner != obj)
{
int val = 0;
int quota = 0;
switch (Typeof(obj))
{
case TYPE_ROOM:
val = mudconf.digcost;
quota = mudconf.room_quota;
break;
case TYPE_THING:
val = OBJECT_DEPOSIT(Pennies(obj));
quota = mudconf.thing_quota;
break;
case TYPE_EXIT:
if (Location(obj) == NOTHING)
{
val = mudconf.opencost;
}
else
{
val = mudconf.opencost + mudconf.linkcost;
}
quota = mudconf.exit_quota;
break;
case TYPE_PLAYER:
if (Robot(obj))
{
val = mudconf.robotcost;
}
else
{
val = 0;
}
quota = mudconf.player_quota;
break;
}
if (val)
{
giveto(owner, val);
if ( !Quiet(owner)
&& !Quiet(obj))
{
notify(owner, tprintf(
"You get back your %d %s deposit for %s(#%d).",
val, mudconf.one_coin, Name(obj), obj));
}
}
if ( mudconf.quotas
&& quota)
{
add_quota(owner, quota);
}
}
if (!mudstate.bStandAlone)
{
ReleaseAllResources(obj);
}
atr_free(obj);
s_Name(obj, NULL);
s_Flags(obj, FLAG_WORD1, (TYPE_GARBAGE | GOING));
s_Flags(obj, FLAG_WORD2, 0);
s_Flags(obj, FLAG_WORD3, 0);
s_Powers(obj, 0);
s_Powers2(obj, 0);
s_Location(obj, NOTHING);
s_Contents(obj, NOTHING);
s_Exits(obj, NOTHING);
s_Next(obj, NOTHING);
s_Link(obj, NOTHING);
s_Owner(obj, GOD);
s_Pennies(obj, 0);
s_Parent(obj, NOTHING);
s_Zone(obj, NOTHING);
local_data_free(obj);
}
/*
* ---------------------------------------------------------------------------
* * make_freelist: Build a freelist
*/
static void make_freelist(void)
{
dbref i;
mudstate.freelist = NOTHING;
DO_WHOLE_DB_BACKWARDS(i)
{
if (IS_CLEAN(i))
{
s_Link(i, mudstate.freelist);
mudstate.freelist = i;
}
}
}
/*
* ---------------------------------------------------------------------------
* * divest_object: Get rid of KEY contents of object.
*/
void divest_object(dbref thing)
{
dbref curr, temp;
SAFE_DOLIST(curr, temp, Contents(thing))
{
if ( !Controls(thing, curr)
&& Has_location(curr)
&& Key(curr))
{
if ( !Good_obj(Home(curr))
|| Going(Home(curr)))
{
s_Home(curr, new_home(curr));
}
move_via_generic(curr, HOME, NOTHING, 0);
}
}
}
/*
* ---------------------------------------------------------------------------
* * empty_obj, purge_going: Get rid of GOING objects in the db.
*/
void empty_obj(dbref obj)
{
dbref targ, next;
// Send the contents home
//
SAFE_DOLIST(targ, next, Contents(obj))
{
if (!Has_location(targ))
{
Log_simple_err(targ, obj,
"Funny object type in contents list of GOING location. Flush terminated.");
break;
}
else if (Location(targ) != obj)
{
Log_header_err(targ, obj, Location(targ), true,
"Location",
"indicates object really in another location during cleanup of GOING location. Flush terminated.");
break;
}
else
{
s_Location(targ, NOTHING);
s_Next(targ, NOTHING);
if ( !Good_obj(Home(targ))
|| Going(Home(targ))
|| Home(targ) == obj)
{
s_Home(targ, new_home(targ));
}
move_via_generic(targ, HOME, NOTHING, 0);
divest_object(targ);
}
}
// Destroy the exits.
//
SAFE_DOLIST(targ, next, Exits(obj))
{
if (!isExit(targ) && !isGarbage(targ))
{
Log_simple_err(targ, obj, "Funny object type in exit list of GOING location. Flush terminated.");
break;
}
else if (Exits(targ) != obj)
{
Log_header_err(targ, obj, Exits(targ), true, "Location",
"indicates exit really in another location during cleanup of GOING location. Flush terminated.");
break;
}
else
{
destroy_obj(targ);
}
}
}
/*
* ---------------------------------------------------------------------------
* * destroy_exit, destroy_thing, destroy_player
*/
void destroy_exit(dbref exit)
{
dbref loc = Exits(exit);
s_Exits(loc, remove_first(Exits(loc), exit));
destroy_obj(exit);
}
void destroy_thing(dbref thing)
{
move_via_generic(thing, NOTHING, Owner(thing), 0);
empty_obj(thing);
destroy_obj(thing);
}
void destroy_player(dbref player, dbref victim)
{
// Bye bye...
//
boot_off(victim, "You have been destroyed!");
halt_que(victim, NOTHING);
int count = chown_all(victim, player, player, CHOWN_NOZONE);
// Remove the name from the name hash table.
//
delete_player_name(victim, Name(victim));
dbref aowner;
int aflags;
char *buf = atr_pget(victim, A_ALIAS, &aowner, &aflags);
delete_player_name(victim, buf);
free_lbuf(buf);
move_via_generic(victim, NOTHING, player, 0);
destroy_obj(victim);
notify_quiet(player, tprintf("(%d objects @chowned to you)", count));
}
static void purge_going(void)
{
dbref i;
DO_WHOLE_DB(i)
{
if (!Going(i))
{
continue;
}
const char *p;
switch (Typeof(i))
{
case TYPE_PLAYER:
p = atr_get_raw(i, A_DESTROYER);
if (!p)
{
STARTLOG(LOG_PROBLEMS, "OBJ", "DAMAG");
log_type_and_name(i);
dbref loc = Location(i);
if (loc != NOTHING)
{
log_text(" in ");
log_type_and_name(loc);
}
log_text("GOING object doesn't remember it's destroyer. GOING reset.");
ENDLOG;
db[i].fs.word[FLAG_WORD1] &= ~GOING;
}
else
{
dbref player = (dbref) mux_atol(p);
destroy_player(player, i);
}
break;
case TYPE_ROOM:
// Room scheduled for destruction... do it.
//
empty_obj(i);
destroy_obj(i);
break;
case TYPE_THING:
destroy_thing(i);
break;
case TYPE_EXIT:
destroy_exit(i);
break;
case TYPE_GARBAGE:
break;
default:
// Something else... How did this happen?
//
Log_simple_err(i, NOTHING,
"GOING object with unexpected type. Destroyed.");
destroy_obj(i);
}
}
}
// ---------------------------------------------------------------------------
// check_dead_refs: Look for references to GOING or illegal objects.
//
static void check_pennies(dbref thing, int limit, const char *qual)
{
if (Going(thing))
{
return;
}
int j = Pennies(thing);
if (j)
{
if (isRoom(thing) || isExit(thing))
{
Log_header_err(thing, NOTHING, j, false, qual, "is strange. Reset.");
s_Pennies(thing, 0);
}
else if (j < 0)
{
Log_header_err(thing, NOTHING, j, false, qual, "is negative.");
}
else if (limit < j)
{
Log_header_err(thing, NOTHING, j, false, qual, "is excessive.");
}
}
else
{
if(isPlayer(thing) || isThing(thing))
{
Log_header_err(thing, NOTHING, j, false, qual, "is zero.");
}
}
}
static void check_dead_refs(void)
{
dbref targ, owner, i, j;
int aflags;
char *str;
FWDLIST *fp;
bool dirty;
DO_WHOLE_DB(i)
{
// Check the owner.
//
owner = Owner(i);
if (!Good_obj(owner))
{
if (isPlayer(i))
{
Log_header_err(i, NOTHING, owner, true, "Owner",
"is invalid. Set to player.");
owner = i;
}
else
{
Log_header_err(i, NOTHING, owner, true, "Owner",
"is invalid. Set to GOD.");
owner = GOD;
}
s_Owner(i, owner);
if (!mudstate.bStandAlone)
{
halt_que(NOTHING, i);
}
s_Halted(i);
}
else if (check_type & DBCK_FULL)
{
if (Going(owner))
{
if (isPlayer(i))
{
Log_header_err(i, NOTHING, owner, true,
"Owner", "is set GOING. Set to player.");
owner = i;
}
else
{
Log_header_err(i, NOTHING, owner, true,
"Owner", "is set GOING. Set to GOD.");
owner = GOD;
}
s_Owner(i, owner);
if (!mudstate.bStandAlone)
{
halt_que(NOTHING, i);
}
s_Halted(i);
}
else if (!OwnsOthers(owner))
{
if (isPlayer(i))
{
Log_header_err(i, NOTHING, owner, true,
"Owner", "is not a valid owner type. Set to player.");
owner = i;
}
else
{
Log_header_err(i, NOTHING, owner, true,
"Owner", "is not a valid owner type. Set to GOD.");
owner = GOD;
}
s_Owner(i, owner);
}
}
// Check the parent
//
targ = Parent(i);
if (Good_obj(targ))
{
if (Going(targ))
{
s_Parent(i, NOTHING);
if (!mudstate.bStandAlone)
{
if ( !Quiet(i)
&& !Quiet(owner))
{
notify(owner, tprintf("Parent cleared on %s(#%d)",
Name(i), i));
}
}
else
{
Log_header_err(i, Location(i), targ, true, "Parent",
"is invalid. Cleared.");
}
}
}
else if (targ != NOTHING)
{
Log_header_err(i, Location(i), targ, true,
"Parent", "is invalid. Cleared.");
s_Parent(i, NOTHING);
}
// Check the zone.
//
targ = Zone(i);
if (Good_obj(targ))
{
if (Going(targ))
{
s_Zone(i, NOTHING);
if (!mudstate.bStandAlone)
{
owner = Owner(i);
if ( !Quiet(i)
&& !Quiet(owner))
{
notify(owner, tprintf("Zone cleared on %s(#%d)",
Name(i), i));
}
}
else
{
Log_header_err(i, Location(i), targ, true, "Zone",
"is invalid. Cleared.");
}
}
}
else if (targ != NOTHING)
{
Log_header_err(i, Location(i), targ, true, "Zone",
"is invalid. Cleared.");
s_Zone(i, NOTHING);
}
// Check forwardlist
//
fp = fwdlist_get(i);
dirty = false;
if (fp)
{
for (j = 0; j < fp->count; j++)
{
targ = fp->data[j];
if ( Good_obj(targ)
&& Going(targ))
{
fp->data[j] = NOTHING;
dirty = true;
}
else if ( !Good_obj(targ)
&& targ != NOTHING)
{
fp->data[j] = NOTHING;
dirty = true;
}
}
}
if (dirty)
{
str = alloc_lbuf("purge_going");
(void)fwdlist_rewrite(fp, str);
atr_get_info(i, A_FORWARDLIST, &owner, &aflags);
atr_add(i, A_FORWARDLIST, str, owner, aflags);
free_lbuf(str);
}
if (check_type & DBCK_FULL)
{
// Check for wizards
//
if (Wizard(i))
{
if (isPlayer(i))
{
Log_simple_err(i, NOTHING, "Player is a WIZARD.");
}
if (!Wizard(Owner(i)))
{
Log_header_err(i, NOTHING, Owner(i), true,
"Owner", "of a WIZARD object is not a wizard");
}
}
}
switch (Typeof(i))
{
case TYPE_PLAYER:
// Check home.
//
targ = Home(i);
if ( !Good_obj(targ)
|| !Has_contents(targ))
{
Log_simple_err(i, Location(i), "Bad home. Reset.");
s_Home(i, default_home());
}
// Check the location.
//
targ = Location(i);
if ( !Good_obj(targ)
|| !Has_contents(targ))
{
Log_pointer_err(NOTHING, i, NOTHING, targ, "Location",
"is invalid. Moved to home.");
move_object(i, Home(i));
}
// Check for self-referential Next().
//
if (Next(i) == i)
{
Log_simple_err(i, NOTHING,
"Next points to self. Next cleared.");
s_Next(i, NOTHING);
}
if (check_type & DBCK_FULL)
{
// Check wealth.
//
targ = mudconf.paylimit;
check_pennies(i, targ, "Wealth");
}
break;
case TYPE_THING:
// Check home.
//
targ = Home(i);
if ( !Good_obj(targ)
|| !Has_contents(targ))
{
if (!mudstate.bStandAlone)
{
if ( !Quiet(i)
&& !Quiet(owner))
{
notify(owner, tprintf("Home reset on %s(#%d)",
Name(i), i));
}
else
{
Log_header_err(i, Location(i), targ, true, "Home",
"is invalid. Cleared.");
}
}
s_Home(i, new_home(i));
}
// Check the location.
//
targ = Location(i);
if ( !Good_obj(targ)
|| !Has_contents(targ))
{
Log_pointer_err(NOTHING, i, NOTHING, targ, "Location",
"is invalid. Moved to home.");
move_object(i, HOME);
}
// Check for self-referential Next().
//
if (Next(i) == i)
{
Log_simple_err(i, NOTHING,
"Next points to self. Next cleared.");
s_Next(i, NOTHING);
}
if (check_type & DBCK_FULL)
{
// Check value.
//
targ = OBJECT_ENDOWMENT(mudconf.createmax);
check_pennies(i, targ, "Value");
}
break;
case TYPE_ROOM:
// Check the dropto.
//
targ = Dropto(i);
if (Good_obj(targ))
{
if (Going(targ))
{
s_Dropto(i, NOTHING);
if (!mudstate.bStandAlone)
{
if ( !Quiet(i)
&& !Quiet(owner))
{
notify(owner, tprintf("Dropto removed from %s(#%d)",
Name(i), i));
}
}
else
{
Log_header_err(i, NOTHING, targ, true, "Dropto",
"is invalid. Removed.");
}
}
}
else if ( targ != NOTHING
&& targ != HOME)
{
Log_header_err(i, NOTHING, targ, true, "Dropto",
"is invalid. Cleared.");
s_Dropto(i, NOTHING);
}
if (check_type & DBCK_FULL)
{
// NEXT should be null.
//
if (Next(i) != NOTHING)
{
Log_header_err(i, NOTHING, Next(i), true, "Next pointer",
"should be NOTHING. Reset.");
s_Next(i, NOTHING);
}
// LINK should be null.
//
if (Link(i) != NOTHING)
{
Log_header_err(i, NOTHING, Link(i), true, "Link pointer ",
"should be NOTHING. Reset.");
s_Link(i, NOTHING);
}
// Check value.
//
check_pennies(i, 1, "Value");
}
break;
case TYPE_EXIT:
// If it points to something GOING, set it going.
//
targ = Location(i);
if (Good_obj(targ))
{
if (Going(targ))
{
s_Going(i);
}
}
else if (targ == HOME)
{
// null case, HOME is always valid.
//
}
else if (targ != NOTHING)
{
Log_header_err(i, Exits(i), targ, true, "Destination",
"is invalid. Exit destroyed.");
s_Going(i);
}
else
{
if (!Has_contents(targ))
{
Log_header_err(i, Exits(i), targ, true, "Destination",
"is not a valid type. Exit destroyed.");
s_Going(i);
}
}
// Check for self-referential Next().
//
if (Next(i) == i)
{
Log_simple_err(i, NOTHING,
"Next points to self. Next cleared.");
s_Next(i, NOTHING);
}
if (check_type & DBCK_FULL)
{
// CONTENTS should be null.
//
if (Contents(i) != NOTHING)
{
Log_header_err(i, Exits(i), Contents(i), true, "Contents",
"should be NOTHING. Reset.");
s_Contents(i, NOTHING);
}
// LINK should be null.
//
if (Link(i) != NOTHING)
{
Log_header_err(i, Exits(i), Link(i), true, "Link",
"should be NOTHING. Reset.");
s_Link(i, NOTHING);
}
// Check value.
//
check_pennies(i, 1, "Value");
}
break;
case TYPE_GARBAGE:
break;
default:
// Funny object type, destroy it.
//
Log_simple_err(i, NOTHING, "Funny object type. Destroyed.");
destroy_obj(i);
}
}
}
/*
* ---------------------------------------------------------------------------
* * check_loc_exits, check_exit_chains: Validate the exits chains
* * of objects and attempt to correct problems. The following errors are
* * found and corrected:
* * Location not in database - skip it.
* * Location GOING - skip it.
* * Location not a PLAYER, ROOM, or THING - skip it.
* * Location already visited - skip it.
* * Exit/next pointer not in database - NULL it.
* * Member is not an EXIT - terminate chain.
* * Member is GOING - destroy exit.
* * Member already checked (is in another list) - terminate chain.
* * Member in another chain (recursive check) - terminate chain.
* * Location of member is not specified location - reset it.
*/
static void check_loc_exits(dbref loc)
{
if (!Good_obj(loc))
{
return;
}
// Only check players, rooms, and things that aren't GOING.
//
if ( isExit(loc)
|| Going(loc))
{
return;
}
// If marked, we've checked here already.
//
if (Marked(loc))
{
return;
}
Mark(loc);
// Check all the exits.
//
dbref temp, exitloc, dest;
dbref back = NOTHING;
dbref exit = Exits(loc);
while (exit != NOTHING)
{
exitloc = NOTHING;
dest = NOTHING;
if (Good_obj(exit))
{
exitloc = Exits(exit);
dest = Location(exit);
}
if (!Good_obj(exit))
{
// A bad pointer - terminate chain.
//
Log_pointer_err(back, loc, NOTHING, exit, "Exit list",
"is invalid. List nulled.");
if (back != NOTHING)
{
s_Next(back, NOTHING);
}
else
{
s_Exits(loc, NOTHING);
}
exit = NOTHING;
}
else if (!isExit(exit))
{
// Not an exit - terminate chain.
//
Log_pointer_err(back, loc, NOTHING, exit, "Exitlist member",
"is not an exit. List terminated.");
if (back != NOTHING)
{
s_Next(back, NOTHING);
}
else
{
s_Exits(loc, NOTHING);
}
exit = NOTHING;
}
else if (Going(exit))
{
// Going - silently filter out.
//
temp = Next(exit);
if (back != NOTHING)
{
s_Next(back, temp);
}
else
{
s_Exits(loc, temp);
}
destroy_obj(exit);
exit = temp;
continue;
}
else if (Marked(exit))
{
// Already in another list - terminate chain.
//
Log_pointer_err(back, loc, NOTHING, exit, "Exitlist member",
"is in another exitlist. Cleared.");
if (back != NOTHING)
{
s_Next(back, NOTHING);
}
else
{
s_Exits(loc, NOTHING);
}
exit = NOTHING;
}
else if ( !Good_obj(dest)
&& dest != HOME
&& dest != NOTHING)
{
// Destination is not in the db. Null it.
//
Log_pointer_err(back, loc, NOTHING, exit, "Destination",
"is invalid. Cleared.");
s_Location(exit, NOTHING);
}
else if (exitloc != loc)
{
// Exit thinks it's in another place. Check the exitlist there
// and see if it contains this exit. If it does, then our exitlist
// somehow pointed into the middle of their exitlist. If not,
// assume we own the exit.'
//
check_loc_exits(exitloc);
if (Marked(exit))
{
// It's in the other list, give it up.
//
Log_pointer_err(back, loc, NOTHING, exit, "",
"is in another exitlist. List terminated.");
if (back != NOTHING)
{
s_Next(back, NOTHING);
}
else
{
s_Exits(loc, NOTHING);
}
exit = NOTHING;
}
else
{
// Not in the other list, assume in ours.
//
Log_header_err(exit, loc, exitloc, true,
"Not on chain for location", "Reset.");
s_Exits(exit, loc);
}
}
if (exit != NOTHING)
{
// All OK (or all was made OK).
//
if (check_type & DBCK_FULL)
{
// Make sure exit owner owns at least one of the source or
// destination. Just warn if he doesn't.
//
temp = Owner(exit);
if ( temp != Owner(loc)
&& temp != Owner(Location(exit)))
{
Log_header_err(exit, loc, temp, true, "Owner",
"does not own either the source or destination.");
}
}
Mark(exit);
back = exit;
exit = Next(exit);
}
}
return;
}
static void check_exit_chains(void)
{
dbref i;
Unmark_all(i);
DO_WHOLE_DB(i)
{
check_loc_exits(i);
}
DO_WHOLE_DB(i)
{
if ( isExit(i)
&& !Marked(i))
{
Log_simple_err(i, NOTHING, "Disconnected exit. Destroyed.");
destroy_obj(i);
}
}
}
/*
* ---------------------------------------------------------------------------
* * check_misplaced_obj, check_loc_contents, check_contents_chains: Validate
* * the contents chains of objects and attempt to correct problems. The
* * following errors are found and corrected:
* * Location not in database - skip it.
* * Location GOING - skip it.
* * Location not a PLAYER, ROOM, or THING - skip it.
* * Location already visited - skip it.
* * Contents/next pointer not in database - NULL it.
* * Member is not an PLAYER or THING - terminate chain.
* * Member is GOING - destroy exit.
* * Member already checked (is in another list) - terminate chain.
* * Member in another chain (recursive check) - terminate chain.
* * Location of member is not specified location - reset it.
*/
static void check_loc_contents(dbref);
static void check_misplaced_obj(dbref *obj, dbref back, dbref loc)
{
// Object thinks it's in another place. Check the contents list there
// and see if it contains this object. If it does, then our contents
// list somehow pointed into the middle of their contents list and we
// should truncate our list. If not, assume we own the object.
//
if (!Good_obj(*obj))
{
return;
}
loc = Location(*obj);
Unmark(*obj);
if (Good_obj(loc))
{
check_loc_contents(loc);
}
if (Marked(*obj))
{
// It's in the other list, give it up.
//
Log_pointer_err(back, loc, NOTHING, *obj, "",
"is in another contents list. Cleared.");
if (back != NOTHING)
{
s_Next(back, NOTHING);
}
else
{
s_Contents(loc, NOTHING);
}
*obj = NOTHING;
}
else
{
// Not in the other list, assume in ours.
//
Log_header_err(*obj, loc, Contents(*obj), true, "Location",
"is invalid. Reset.");
s_Contents(*obj, loc);
}
return;
}
static void check_loc_contents(dbref loc)
{
if (!Good_obj(loc))
{
return;
}
// Only check players, rooms, and things that aren't GOING.
//
if ( isExit(loc)
|| Going(loc))
{
return;
}
dbref back = NOTHING;
dbref obj = Contents(loc);
while (obj != NOTHING)
{
if (!Good_obj(obj))
{
// A bad pointer - terminate chain.
//
Log_pointer_err(back, loc, NOTHING, obj, "Contents list",
"is invalid. Cleared.");
if (back != NOTHING)
{
s_Next(back, NOTHING);
}
else
{
s_Contents(loc, NOTHING);
}
obj = NOTHING;
}
else if (!Has_location(obj))
{
// Not a player or thing - terminate chain.
//
Log_pointer_err(back, loc, NOTHING, obj, "",
"is not a player or thing. Cleared.");
if (back != NOTHING)
{
s_Next(back, NOTHING);
}
else
{
s_Contents(loc, NOTHING);
}
obj = NOTHING;
}
else if (Marked(obj))
{
// Already visited - either truncate or ignore.
//
if (Location(obj) != loc)
{
// Location wrong - either truncate or fix.
//
check_misplaced_obj(&obj, back, loc);
}
else
{
// Location right - recursive contents.
//
}
}
else if (Location(obj) != loc)
{
// Location wrong - either truncate or fix.
//
check_misplaced_obj(&obj, back, loc);
}
if (obj != NOTHING)
{
// All OK (or all was made OK).
//
if (check_type & DBCK_FULL)
{
// Check for wizard command-handlers inside nonwiz. Just warn
// if we find one.
//
if (Wizard(obj) && !Wizard(loc))
{
if (Commer(obj))
{
Log_simple_err(obj, loc,
"Wizard command handling object inside nonwizard.");
}
}
// Check for nonwizard objects inside wizard objects.
//
if ( Wizard(loc)
&& !Wizard(obj)
&& !Wizard(Owner(obj)))
{
Log_simple_err(obj, loc, "Nonwizard object inside wizard.");
}
}
Mark(obj);
back = obj;
obj = Next(obj);
}
}
}
static void check_contents_chains(void)
{
dbref i;
Unmark_all(i);
DO_WHOLE_DB(i)
{
check_loc_contents(i);
}
DO_WHOLE_DB(i)
{
if ( !Going(i)
&& !Marked(i)
&& Has_location(i))
{
Log_simple_err(i, Location(i), "Orphaned object, moved home.");
s_Location(i, NOTHING);
s_Next(i, NOTHING);
if ( !Good_obj(Home(i))
|| Going(Home(i)))
{
s_Home(i, new_home(i));
}
move_via_generic(i, HOME, NOTHING, 0);
}
}
}
/*
* ---------------------------------------------------------------------------
* * mark_place, check_floating: Look for floating rooms not set FLOATING.
*/
static void mark_place(dbref loc)
{
dbref exit;
// If already marked, exit. Otherwise set marked.
//
if (!Good_obj(loc))
{
return;
}
if (Marked(loc))
{
return;
}
Mark(loc);
// Visit all places you can get to via exits from here.
//
for (exit = Exits(loc); exit != NOTHING; exit = Next(exit))
{
if (Good_obj(Location(exit)))
{
mark_place(Location(exit));
}
}
}
static void check_floating(void)
{
dbref owner, i;
// Mark everyplace you can get to via exits from the starting room.
//
Unmark_all(i);
mark_place(mudconf.start_room);
// Look for rooms not marked and not set FLOATING.
//
DO_WHOLE_DB(i)
{
if ( isRoom(i)
&& !Floating(i)
&& !Going(i)
&& !Marked(i))
{
owner = Owner(i);
if (!mudstate.bStandAlone)
{
if (Good_owner(owner))
{
notify(owner, tprintf( "You own a floating room: %s(#%d)",
Name(i), i));
}
}
else
{
Log_simple_err(i, NOTHING, "Disconnected room.");
}
}
}
}
/*
* ---------------------------------------------------------------------------
* * do_dbck: Perform a database consistency check and clean up damage.
*/
void do_dbck(dbref executor, dbref caller, dbref enactor, int key)
{
check_type = key;
check_dead_refs();
check_exit_chains();
check_contents_chains();
check_floating();
if ( !mudstate.bStandAlone
&& executor != NOTHING)
{
Guest.CleanUp();
}
purge_going();
make_freelist();
// Allow the local extensions to do data checks.
//
local_dbck();
if ( !mudstate.bStandAlone
&& executor != NOTHING
&& !Quiet(executor))
{
notify(executor, "Done.");
}
}