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BUG: Do not leak with greyscale bmp. Solve problem with name>256 for pgx and resolve random memory access (reported by valgrind)

This commit is contained in:
Mathieu Malaterre 2006-07-22 03:26:10 +00:00
parent abe8e93c21
commit 4f87b9abd1
1 changed files with 31 additions and 15 deletions
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46
codec/convert.c
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@ -344,7 +344,9 @@ opj_image_t* bmptoimage(const char *filename, opj_cparameters_t *parameters) {
}
}
free(RGB);
free(table_R);
free(table_G);
free(table_B);
} else if (Info_h.biBitCount == 8 && Info_h.biCompression == 1) {
table_R = (unsigned char *) malloc(256 * sizeof(unsigned char));
table_G = (unsigned char *) malloc(256 * sizeof(unsigned char));
@ -450,6 +452,9 @@ opj_image_t* bmptoimage(const char *filename, opj_cparameters_t *parameters) {
}
}
free(RGB);
free(table_R);
free(table_G);
free(table_B);
} else {
fprintf(stderr,
"Other system than 24 bits/pixels or 8 bits (no RLE coding) is not yet implemented [%d]\n", Info_h.biBitCount);
@ -768,34 +773,45 @@ opj_image_t* pgxtoimage(const char *filename, opj_cparameters_t *parameters) {
return image;
}
int imagetopgx(opj_image_t * image, char *outfile) {
int imagetopgx(opj_image_t * image, const char *outfile) {
int w, wr, h, hr;
int i, j, compno;
FILE *fdest = NULL;
for (compno = 0; compno < image->numcomps; compno++) {
opj_image_comp_t *comp = &image->comps[compno];
char name[256];
int nbytes = 0;
char *tmp = outfile;
while (*tmp) {
tmp++;
}
while (*tmp!='.') {
tmp--;
}
*tmp='\0';
char bname[256]; /* buffer for name */
char *name = bname; /* pointer */
int nbytes = 0;
const size_t olen = strlen(outfile);
const size_t dotpos = olen - 4;
const size_t total = dotpos + 1 + 1 + 4; /* '-' + '[1-3]' + '.pgx' */
if( outfile[dotpos] != '.' )
{
/* `pgx` was recognized but there is no dot at expected position */
fprintf(stderr, "ERROR -> Impossible happen." );
return 1;
}
if( total > 256 )
{
name = (char*)malloc(total+1);
}
strncpy(name, outfile, dotpos);
if (image->numcomps > 1) {
sprintf(name, "%s-%d.pgx", outfile, compno);
sprintf(name+dotpos, "-%d.pgx", compno);
} else {
sprintf(name, "%s.pgx", outfile);
strcpy(name+dotpos, ".pgx");
}
fdest = fopen(name, "wb");
if (!fdest) {
fprintf(stderr, "ERROR -> failed to open %s for writing\n", name);
return 1;
}
/* dont need name anymore */
if( total > 256 )
{
free(name);
}
/* w = int_ceildiv(image->x1 - image->x0, comp->dx); */
/* wr = int_ceildiv(int_ceildivpow2(image->x1 - image->x0,image->factor), comp->dx); */
w = image->comps[compno].w;