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fix(png) check png magic number to be sure it's a png image
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kisvegabor committed Jan 3, 2022
1 parent 92016cc commit 1092550
Showing 1 changed file with 2 additions and 0 deletions.
2 changes: 2 additions & 0 deletions src/extra/libs/png/lv_png.c
Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,8 @@ static lv_res_t decoder_info(struct _lv_img_decoder_t * decoder, const void * sr
/*If it's a PNG file in a C array...*/
else if(src_type == LV_IMG_SRC_VARIABLE) {
const lv_img_dsc_t * img_dsc = src;
const uint8_t magic[] = {0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a};
if(memcmp(magic, img_dsc->data, sizeof(magic))) return LV_RES_INV;
header->always_zero = 0;
header->cf = img_dsc->header.cf; /*Save the color format*/
header->w = img_dsc->header.w; /*Save the color width*/
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