- local typemagic=$(seama_get_type_magic "$1")
- [ "$typemagic" != "6669726d" ] && {
- echo "Invalid image, bad type: $typemagic"
+ local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null)
+ local md5_chk=$(dd if="$1" bs=$CI_BLKSZ skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}"
+
+ if [ -n "$md5_img" -a -n "$md5_chk" ] && [ "$md5_img" = "$md5_chk" ]; then
+ return 0
+ else
+ echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)"