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bmp: Sanity check images

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This commit is contained in:
StaticSaga 2021-07-10 13:59:58 +02:00
parent b38b830241
commit 8ea847e563
1 changed files with 4 additions and 1 deletions
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5
stage23/lib/bmp.c
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@ -40,7 +40,10 @@ int bmp_open_image(struct image *image, struct file_handle *file) {
if (memcmp(&header.bf_signature, "BM", 2) != 0)
return -1;
if ((header.bi_bpp < 8) | ((header.bi_bpp % 8) != 0))
if ((header.bi_bpp != 32) && (header.bi_bpp != 24))
return -1;
if (header.bi_compression)
return -1;
struct bmp_local *local = ext_mem_alloc(sizeof(struct bmp_local));