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checksum_verify() {
local _hashtool _hashsum _cksum
if [ -n "$SHA256" ]; then
_hashtool=sha256sum
_hashsum=$SHA256
elif [ -n "$SHA1" ]; then
_hashtool=sha1sum
_hashsum=$SHA1
elif [ -n "$MD5" ]; then
_hashtool=md5sum
_hashsum=$MD5
else
fatalerror "Cannot find the SHA256, SHA1, or MD5 checksum of $ISOFILE"
fi
_cksum=$("$_hashtool" "isofiles/$ISOFILE" | cut -d' ' -f1)
if [[ $_cksum == $_hashsum ]]; then
msg "$ISOFILE ok."
else
msg "$ISOFILE checksum bad!" && return 1
fi
}
process_distro() {
unset MD5 SHA1 SHA256
source "distro/$1/install.sh"
ISOFILE="$(basename $ISOURL)"
ISOMNT="/media/$ISOFILE"
MIRRORLIST=(`cat "distro/$1/mirrorlist"`)
}
download_iso() {
mkdir -p isofiles
for url in ${MIRRORLIST[@]}
do
wget -c -O "isofiles/$ISOFILE" "$url/$ISOURL"
if checksum_verify; then
return 0
else
# checksum bad, may be due to a bad partial download
# so remove the file and try again
rm -f "isofiles/$ISOFILE"
wget -O "isofiles/$ISOFILE" "$url/$ISOURL"
checksum_verify && return 0
rm -f "isofiles/$ISOFILE" # then try next mirror
fi
done
fatalerror "Fail to download $ISOFILE!"
}
mount_iso() {
udevil mount "isofiles/$ISOFILE" "$ISOMNT"
}
umount_iso() {
udevil umount "$ISOMNT"
}
getuuid() {
lsblk -n -o UUID "$1"
}
as-root() {
if [ "$UID" == 0 ]; then
"$@"
elif type -p sudo > /dev/null; then
sudo "$@"
elif type -p su > /dev/null; then
su -c "$*"
fi
}
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