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redo bspfile to use dynamic allocation for the arrays to avoid buffer

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overflows. also fix up the verbosity levels in qfvis.c
This commit is contained in:
Bill Currie 2002-09-18 06:07:38 +00:00
parent ef49e4cf17
commit 599fea0edb
3 changed files with 54 additions and 51 deletions
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30
include/QF/bspfile.h
View file

@ -234,49 +234,49 @@ typedef struct {
// the utilities get to be lazy and just use large static arrays
extern int nummodels;
extern dmodel_t dmodels[MAX_MAP_MODELS];
extern dmodel_t *dmodels;
extern int visdatasize;
extern byte dvisdata[MAX_MAP_VISIBILITY];
extern byte *dvisdata;
extern int lightdatasize;
extern byte dlightdata[MAX_MAP_LIGHTING];
extern byte *dlightdata;
extern int texdatasize;
extern byte dtexdata[MAX_MAP_MIPTEX]; // (dmiptexlump_t)
extern byte *dtexdata; // (dmiptexlump_t)
extern int entdatasize;
extern char dentdata[MAX_MAP_ENTSTRING];
extern char *dentdata;
extern int numleafs;
extern dleaf_t dleafs[MAX_MAP_LEAFS];
extern dleaf_t *dleafs;
extern int numplanes;
extern dplane_t dplanes[MAX_MAP_PLANES];
extern dplane_t *dplanes;
extern int numvertexes;
extern dvertex_t dvertexes[MAX_MAP_VERTS];
extern dvertex_t *dvertexes;
extern int numnodes;
extern dnode_t dnodes[MAX_MAP_NODES];
extern dnode_t *dnodes;
extern int numtexinfo;
extern texinfo_t texinfo[MAX_MAP_TEXINFO];
extern texinfo_t *texinfo;
extern int numfaces;
extern dface_t dfaces[MAX_MAP_FACES];
extern dface_t *dfaces;
extern int numclipnodes;
extern dclipnode_t dclipnodes[MAX_MAP_CLIPNODES];
extern dclipnode_t *dclipnodes;
extern int numedges;
extern dedge_t dedges[MAX_MAP_EDGES];
extern dedge_t *dedges;
extern int nummarksurfaces;
extern unsigned short dmarksurfaces[MAX_MAP_MARKSURFACES];
extern unsigned short *dmarksurfaces;
extern int numsurfedges;
extern int dsurfedges[MAX_MAP_SURFEDGES];
extern int *dsurfedges;
void DecompressVis (byte *in, byte *decompressed);
int CompressVis (byte *vis, byte *dest);

69
libs/util/bspfile.c
View file

@ -50,49 +50,49 @@ static const char rcsid[] =
#include "QF/sys.h"
int nummodels;
dmodel_t dmodels[MAX_MAP_MODELS];
dmodel_t *dmodels;
int visdatasize;
byte dvisdata[MAX_MAP_VISIBILITY];
byte *dvisdata;
int lightdatasize;
byte dlightdata[MAX_MAP_LIGHTING];
byte *dlightdata;
int texdatasize;
byte dtexdata[MAX_MAP_MIPTEX]; // (dmiptexlump_t)
byte *dtexdata;
int entdatasize;
char dentdata[MAX_MAP_ENTSTRING];
char *dentdata;
int numleafs;
dleaf_t dleafs[MAX_MAP_LEAFS];
dleaf_t *dleafs;
int numplanes;
dplane_t dplanes[MAX_MAP_PLANES];
dplane_t *dplanes;
int numvertexes;
dvertex_t dvertexes[MAX_MAP_VERTS];
dvertex_t *dvertexes;
int numnodes;
dnode_t dnodes[MAX_MAP_NODES];
dnode_t *dnodes;
int numtexinfo;
texinfo_t texinfo[MAX_MAP_TEXINFO];
texinfo_t *texinfo;
int numfaces;
dface_t dfaces[MAX_MAP_FACES];
dface_t *dfaces;
int numclipnodes;
dclipnode_t dclipnodes[MAX_MAP_CLIPNODES];
dclipnode_t *dclipnodes;
int numedges;
dedge_t dedges[MAX_MAP_EDGES];
dedge_t *dedges;
int nummarksurfaces;
unsigned short dmarksurfaces[MAX_MAP_MARKSURFACES];
unsigned short *dmarksurfaces;
int numsurfedges;
int dsurfedges[MAX_MAP_SURFEDGES];
int *dsurfedges;
dheader_t *header;
dheader_t outheader;
@ -234,7 +234,7 @@ AddLump (int lumpnum, void *data, int len)
}
static int
CopyLump (int lump, void *dest, int size)
CopyLump (int lump, void **dest, int size)
{
int length, ofs;
@ -244,7 +244,10 @@ CopyLump (int lump, void *dest, int size)
if (length % size)
Sys_Error ("LoadBSPFile: odd lump size");
memcpy (dest, (byte *) header + ofs, length);
*dest = malloc (length);
if (!dest)
Sys_Error ("LoadBSPFile: out of memory");
memcpy (*dest, (byte *) header + ofs, length);
return length / size;
}
@ -265,25 +268,25 @@ LoadBSPFile (const char *filename)
if (header->version != BSPVERSION)
Sys_Error ("%s is version %i, not %i", filename, i, BSPVERSION);
nummodels = CopyLump (LUMP_MODELS, dmodels, sizeof (dmodel_t));
numvertexes = CopyLump (LUMP_VERTEXES, dvertexes, sizeof (dvertex_t));
numplanes = CopyLump (LUMP_PLANES, dplanes, sizeof (dplane_t));
numleafs = CopyLump (LUMP_LEAFS, dleafs, sizeof (dleaf_t));
numnodes = CopyLump (LUMP_NODES, dnodes, sizeof (dnode_t));
numtexinfo = CopyLump (LUMP_TEXINFO, texinfo, sizeof (texinfo_t));
numclipnodes = CopyLump (LUMP_CLIPNODES, dclipnodes, sizeof (dclipnode_t));
numfaces = CopyLump (LUMP_FACES, dfaces, sizeof (dface_t));
nummarksurfaces = CopyLump (LUMP_MARKSURFACES, dmarksurfaces,
//FIXME casting to (void**) isn't really portable :(
nummodels = CopyLump (LUMP_MODELS, (void **)&dmodels, sizeof (dmodel_t));
numvertexes = CopyLump (LUMP_VERTEXES, (void **)&dvertexes, sizeof (dvertex_t));
numplanes = CopyLump (LUMP_PLANES, (void **)&dplanes, sizeof (dplane_t));
numleafs = CopyLump (LUMP_LEAFS, (void **)&dleafs, sizeof (dleaf_t));
numnodes = CopyLump (LUMP_NODES, (void **)&dnodes, sizeof (dnode_t));
numtexinfo = CopyLump (LUMP_TEXINFO, (void **)&texinfo, sizeof (texinfo_t));
numclipnodes = CopyLump (LUMP_CLIPNODES, (void **)&dclipnodes, sizeof (dclipnode_t));
numfaces = CopyLump (LUMP_FACES, (void **)&dfaces, sizeof (dface_t));
nummarksurfaces = CopyLump (LUMP_MARKSURFACES, (void **)&dmarksurfaces,
sizeof (dmarksurfaces[0]));
numsurfedges = CopyLump (LUMP_SURFEDGES, dsurfedges,
numsurfedges = CopyLump (LUMP_SURFEDGES, (void **)&dsurfedges,
sizeof (dsurfedges[0]));
numedges = CopyLump (LUMP_EDGES, dedges, sizeof (dedge_t));
numedges = CopyLump (LUMP_EDGES, (void **)&dedges, sizeof (dedge_t));
texdatasize = CopyLump (LUMP_TEXTURES, dtexdata, 1);
visdatasize = CopyLump (LUMP_VISIBILITY, dvisdata, 1);
lightdatasize = CopyLump (LUMP_LIGHTING, dlightdata, 1);
entdatasize = CopyLump (LUMP_ENTITIES, dentdata, 1);
texdatasize = CopyLump (LUMP_TEXTURES, (void **)&dtexdata, 1);
visdatasize = CopyLump (LUMP_VISIBILITY, (void **)&dvisdata, 1);
lightdatasize = CopyLump (LUMP_LIGHTING, (void **)&dlightdata, 1);
entdatasize = CopyLump (LUMP_ENTITIES, (void **)&dentdata, 1);
free (header);

6
tools/qfvis/source/qfvis.c
View file

@ -370,7 +370,7 @@ void *LeafThread (void *thread)
PortalFlow (portal);
if (options.verbosity >= 0)
if (options.verbosity > 0)
printf ("portal:%4i mightsee:%4i cansee:%4i\n",
(int) (portal - portals),
portal->nummightsee,
@ -449,7 +449,7 @@ LeafFlow (int leafnum)
numvis++;
// compress the bit string
if (options.verbosity >= 0)
if (options.verbosity > 0)
printf ("leaf %4i : %4i visible\n", leafnum, numvis);
totalvis += numvis;
@ -524,7 +524,7 @@ CalcPortalVis (void)
LeafThread (0);
#endif
if (options.verbosity >= 0) {
if (options.verbosity > 0) {
printf ("portalcheck: %i portaltest: %i portalpass: %i\n",
c_portalcheck, c_portaltest, c_portalpass);
printf ("c_vistest: %i c_mighttest: %i\n", c_vistest, c_mighttest);