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Fix crash when attempting to load a corrupt map

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git-svn-id: https://svn.eduke32.com/eduke32@7206 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2018-11-18 18:11:50 +00:00
parent 0d652ae063
commit 6618883d7e
1 changed files with 11 additions and 3 deletions
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14
source/build/src/engine.cpp
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@ -9199,7 +9199,15 @@ int32_t engineLoadBoard(const char *filename, char flags, vec3_t *dapos, int16_t
////////// Read sectors //////////
kread(fil,&numsectors,2); numsectors = B_LITTLE16(numsectors);
if ((unsigned)numsectors >= MYMAXSECTORS()+1) { kclose(fil); return -3; }
if ((unsigned)numsectors >= MYMAXSECTORS() + 1)
{
error:
numsectors = 0;
numwalls = 0;
numsprites = 0;
kclose(fil);
return -3;
}
kread(fil, sector, sizeof(sectortypev7)*numsectors);
@ -9231,7 +9239,7 @@ int32_t engineLoadBoard(const char *filename, char flags, vec3_t *dapos, int16_t
////////// Read walls //////////
kread(fil,&numwalls,2); numwalls = B_LITTLE16(numwalls);
if ((unsigned)numwalls >= MYMAXWALLS()+1) { kclose(fil); return -3; }
if ((unsigned)numwalls >= MYMAXWALLS()+1) goto error;
kread(fil, wall, sizeof(walltypev7)*numwalls);
@ -9261,7 +9269,7 @@ int32_t engineLoadBoard(const char *filename, char flags, vec3_t *dapos, int16_t
////////// Read sprites //////////
kread(fil,&numsprites,2); numsprites = B_LITTLE16(numsprites);
if ((unsigned)numsprites >= MYMAXSPRITES()+1) { kclose(fil); return -3; }
if ((unsigned)numsprites >= MYMAXSPRITES()+1) goto error;
kread(fil, sprite, sizeof(spritetype)*numsprites);