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When loading map w/ oob sectnum sprites, make them have sect. 0 if updatesector fails.

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Previously, if the sprite turned really out to be in void space, either freelist
inconsistency (before the list rewrite) or oob access (now) would happen.
Also add an bound-checking assert() for insertsprite's sectnum argument (it's not
a bound check!)

git-svn-id: https://svn.eduke32.com/eduke32@2480 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2012-03-14 22:30:57 +00:00
parent 77630792f6
commit 2351c2648f
1 changed files with 32 additions and 16 deletions
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48
polymer/eduke32/build/src/engine.c
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@ -7592,10 +7592,13 @@ static void do_deletespritestat(int16_t deleteme)
// //
int32_t insertsprite(int16_t sectnum, int16_t statnum) int32_t insertsprite(int16_t sectnum, int16_t statnum)
{ {
// TODO: guard against bad sectnum?
int32_t newspritenum = insertspritestat(statnum); int32_t newspritenum = insertspritestat(statnum);
if (newspritenum >= 0) if (newspritenum >= 0)
{ {
assert((unsigned)sectnum < MAXSECTORS);
do_insertsprite_at_headofsect(newspritenum, sectnum); do_insertsprite_at_headofsect(newspritenum, sectnum);
Numsprites++; Numsprites++;
} }
@ -9135,14 +9138,25 @@ int32_t loadboard(char *filename, char flags, int32_t *daposx, int32_t *daposy,
if (sprite[i].sectnum<0||sprite[i].sectnum>=MYMAXSECTORS) if (sprite[i].sectnum<0||sprite[i].sectnum>=MYMAXSECTORS)
{ {
initprintf(OSD_ERROR "Map error: sprite #%d(%d,%d) with illegal sector(%d). Map is corrupt!\n",i,sprite[i].x,sprite[i].y,sprite[i].sectnum); initprintf(OSD_ERROR "Map error: sprite #%d(%d,%d) with illegal sector(%d). Map is corrupt!\n",
i,sprite[i].x,sprite[i].y,sprite[i].sectnum);
updatesector(sprite[i].x, sprite[i].y, &sprite[i].sectnum); updatesector(sprite[i].x, sprite[i].y, &sprite[i].sectnum);
// TODO: maybe put it into sector 0 if it's still in void space?
if (sprite[i].sectnum < 0)
sprite[i].sectnum = 0;
}
if (sprite[i].statnum<0||sprite[i].statnum>=MAXSTATUS)
{
initprintf(OSD_ERROR "Map error: sprite #%d(%d,%d) with illegal statnum(%d). Map is corrupt!\n",
i,sprite[i].x,sprite[i].y,sprite[i].statnum);
sprite[i].statnum = 0;
} }
if (sprite[i].picnum<0||sprite[i].picnum>=MAXTILES) if (sprite[i].picnum<0||sprite[i].picnum>=MAXTILES)
{ {
initprintf(OSD_ERROR "Map error: sprite #%d(%d,%d) with illegal picnum(%d). Map is corrupt!\n",i,sprite[i].x,sprite[i].y,sprite[i].picnum); initprintf(OSD_ERROR "Map error: sprite #%d(%d,%d) with illegal picnum(%d). Map is corrupt!\n",
i,sprite[i].x,sprite[i].y,sprite[i].picnum);
sprite[i].picnum = 0; sprite[i].picnum = 0;
} }
} }
@ -9153,7 +9167,8 @@ int32_t loadboard(char *filename, char flags, int32_t *daposx, int32_t *daposy,
#endif #endif
for (i=0; i<numsprites; i++) for (i=0; i<numsprites; i++)
{ {
if ((sprite[i].cstat & 48) == 48) sprite[i].cstat &= ~48; if ((sprite[i].cstat & 48) == 48)
sprite[i].cstat &= ~48;
insertsprite(sprite[i].sectnum,sprite[i].statnum); insertsprite(sprite[i].sectnum,sprite[i].statnum);
} }
@ -9994,30 +10009,31 @@ int32_t saveboard(const char *filename, int32_t *daposx, int32_t *daposy, int32_
} }
for (j=0; j<MAXSPRITES; j++) for (j=0; j<MAXSPRITES; j++)
if ((unsigned)sprite[j].statnum>MAXSTATUS) {
if ((unsigned)sprite[j].statnum > MAXSTATUS)
{ {
initprintf("Map error: sprite #%d(%d,%d) with an illegal statnum(%d)\n",j,sprite[j].x,sprite[j].y,sprite[j].statnum); initprintf("Map error: sprite #%d(%d,%d) with an illegal statnum(%d)\n",
j,sprite[j].x,sprite[j].y,sprite[j].statnum);
changespritestat(j,0); changespritestat(j,0);
} }
numsprites = 0; if ((unsigned)sprite[j].sectnum > MAXSECTORS)
#if 0
for (j=0; j<MAXSTATUS; j++)
{
i = headspritestat[j];
while (i != -1)
{ {
numsprites++; initprintf("Map error: sprite #%d(%d,%d) with an illegal sectnum(%d)\n",
i = nextspritestat[i]; j,sprite[j].x,sprite[j].y,sprite[j].sectnum);
changespritesect(j,0);
} }
} }
#else
numsprites = 0;
for (j=0; j<MAXSPRITES; j++) for (j=0; j<MAXSPRITES; j++)
{ {
if (sprite[j].statnum != MAXSTATUS) if (sprite[j].statnum != MAXSTATUS)
numsprites++; numsprites++;
} }
#endif
assert(numsprites == Numsprites); assert(numsprites == Numsprites);
#ifdef YAX_ENABLE #ifdef YAX_ENABLE