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New Luks generation draft

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This commit is contained in:
Kevin Veen-Birkenbach 2020-10-01 17:42:35 +02:00
parent 3a250de79e
commit ed2083943a
2 changed files with 64 additions and 87 deletions
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8
scripts/image/base.sh
View File

@ -22,10 +22,10 @@ echo_partition_name(){
} }
set_partition_paths(){ set_partition_paths(){
info "Setting partition paths..." info "Setting partition and mapper paths..."
boot_partition_path=$(echo_partition_name "1") boot_partition_path=$(echo_partition_name "1")
root_partition_path=$(echo_partition_name "2") root_partition_path=$(echo_partition_name "2")
encrypted_partition_path=$(echo_partition_name "3") root_mapper_path=$root_partition_path
} }
make_mount_folders(){ make_mount_folders(){
@ -47,13 +47,15 @@ make_working_folder(){
mount_partitions(){ mount_partitions(){
info "Mount boot and root partition..." && info "Mount boot and root partition..." &&
mount -v "$boot_partition_path" "$boot_mount_path" && mount -v "$boot_partition_path" "$boot_mount_path" &&
mount -v "$root_partition_path" "$root_mount_path" && mount -v "$root_mapper_path" "$root_mount_path" &&
info "The following mounts refering this setup exist:" && mount | grep "$working_folder_path" || info "The following mounts refering this setup exist:" && mount | grep "$working_folder_path" ||
error error
} }
destructor(){ destructor(){
info "Cleaning up..." info "Cleaning up..."
info "Encrypt decrypted root..."
sudo cryptsetup -v luksClose root | warning "Failed."
info "Unmounting everything..." info "Unmounting everything..."
umount -lv "$chroot_dev_pts_mount_path" || warning "Umounting $chroot_dev_pts_mount_path failed!" umount -lv "$chroot_dev_pts_mount_path" || warning "Umounting $chroot_dev_pts_mount_path failed!"
umount -lv "$chroot_dev_mount_path" || warning "Umounting $chroot_dev_mount_path failed!" umount -lv "$chroot_dev_mount_path" || warning "Umounting $chroot_dev_mount_path failed!"

143
scripts/image/setup.sh
View File

@ -218,57 +218,66 @@ if [ "$transfer_image" = "y" ]
if [ "$os" = "arch" ] if [ "$os" = "arch" ]
then then
info "Deleting partition tables..." && info "Deleting partition tables..." &&
wipefs -a "$device_path" || error wipefs -a "$device_path" &&
if [ "$encrypt_system" == "y" ] info "Creating partitions..." &&
then ( echo "o" #Type o. This will clear out any partitions on the drive.
info "Creating partitions for encrypted system..." && echo "p" #Type p to list partitions. There should be no partitions left
( echo "o" #Type o. This will clear out any partitions on the drive. echo "n" #Type n,
echo "p" #Type p to list partitions. There should be no partitions left echo "p" #then p for primary,
echo "n" #Type n, echo "1" #1 for the first partition on the drive,
echo "p" #then p for primary, echo "" #Default start sector
echo "1" #1 for the first partition on the drive, echo "+300M" #then type +300M for the last sector.
echo "" #press ENTER to accept the default first sector, echo "t" #Type t,
echo "+300M" #then type +100M for the last sector. echo "c" #then c to set the first partition to type W95 FAT32 (LBA).
echo "t" #Type t, echo "n" #Type n,
echo "c" #then c to set the first partition to type W95 FAT32 (LBA). echo "p" #then p for primary,
echo "n" #Type n, echo "2" #2 for the second partition on the drive,
echo "p" #then p for primary, echo "" #Default start sector
echo "2" #2 for the second partition on the drive, echo "" #Default end sector
echo "" #Default start sector echo "w" #Write the partition table and exit by typing w.
echo "+3G" #Endsector )| fdisk "$device_path" || error
echo "n" #Type n,
echo "p" #then p for primary,
echo "3" #2 for the second partition on the drive,
echo "" #Default start sector
echo "" #Default end sector
echo "w" #Write the partition table and exit by typing w.
)| fdisk "$device_path" || error
else
info "Creating partitions..." &&
( echo "o" #Type o. This will clear out any partitions on the drive.
echo "p" #Type p to list partitions. There should be no partitions left
echo "n" #Type n,
echo "p" #then p for primary,
echo "1" #1 for the first partition on the drive,
echo "" #Default start sector
echo "+100M" #then type +100M for the last sector.
echo "t" #Type t,
echo "c" #then c to set the first partition to type W95 FAT32 (LBA).
echo "n" #Type n,
echo "p" #then p for primary,
echo "2" #2 for the second partition on the drive,
echo "" #Default start sector
echo "" #Default end sector
echo "w" #Write the partition table and exit by typing w.
)| fdisk "$device_path" || error
fi
info "Format boot partition..." && info "Format boot partition..." &&
mkfs.vfat "$boot_partition_path" || error mkfs.vfat "$boot_partition_path" || error
info "Format root partition..." && if [ "$encrypt_system" == "y" ]
mkfs.ext4 "$root_partition_path" || error then
root_mapper_path="/dev/mapper/root"
question "Type in encryption password: " && read -r luks_password
question "Repeat encryption password:" && read -r luks_password_repeat
if [ "$luks_password" != "$luks_password_repeat" ]
then
error "Passwords didn't match."
fi
info "Formating $root_partition_path with LUKS..." &&
echo "$luks_password" | sudo cryptsetup -v luksFormat -c aes-xts-plain64 -s 512 -h sha512 --use-random -i 1000 "$root_partition_path" &&
info "Decrypting $root_partition_path..." &&
echo "$luks_password" | sudo cryptsetup -v luksOpen "$root_partition_path" root &&
info "Setting encryption variables..." &&
encrypted_partition_uuid=$(blkid "$root_partition_path" -s UUID -o value) &&
rescue_suffix=".$(date +%s).rescue" &&
mkinitcpio_path="/etc/mkinitcpio.conf" &&
mkinitcpio_rescue_path="$mkinitcpio_path$rescue_suffix" &&
mkinitcpio_search_modules="MODULES=()" &&
mkinitcpio_replace_modules="MODULES=(g_cdc usb_f_acm usb_f_ecm smsc95xx g_ether)" &&
mkinitcpio_search_binaries="BINARIES=()" &&
mkinitcpio_replace_binaries=$(echo "BINARIES=(/usr/lib/libgcc_s.so.1)"| sed -e 's/[\/&]/\\&/g') &&
mkinitcpio_search_hooks="HOOKS=(base udev autodetect modconf block filesystems keyboard fsck)" &&
mkinitcpio_replace_hooks="HOOKS=(base udev autodetect modconf block sleep netconf dropbear encryptssh filesystems keyboard fsck)" &&
fstab_path="/mnt/etc/fstab" &&
fstab_rescue_path="$fstab_path$rescue_suffix" &&
crypttab_path="/mnt/etc/crypttab" &&
crypttab_rescue_path="$crypttab_path$rescue_suffix" &&
boot_txt_path="/boot/boot.txt" &&
boot_txt_rescue_path="$boot_txt_path$rescue_suffix" &&
boot_txt_delete_line=$(echo "part uuid \${devtype} \${devnum}:2 uuid" | sed -e 's/[]\/$*.^[]/\\&/g') &&
boot_txt_setenv_origin=$(echo "setenv bootargs console=ttyS1,115200 console=tty0 root=PARTUUID=\${uuid} rw rootwait smsc95xx.macaddr=\"\${usbethaddr}\"" | sed -e 's/[]\/$*.^[]/\\&/g') &&
boot_txt_setenv_replace=$(echo "setenv bootargs console=ttyS1,115200 console=tty0 ip=::::$target_hostname:eth0:dhcp cryptdevice=UUID=$encrypted_partition_uuid:root root=$root_mapper_path rw rootwait smsc95xx.macaddr=\"\${usbethaddr}\""| sed -e 's/[\/&]/\\&/g') ||
error
fi
info "Format root partition..." &&
mkfs.ext4 "$root_mapper_path" || error
mount_partitions; mount_partitions;
info "Root files will be transfered to device..." && info "Root files will be transfered to device..." &&
@ -309,9 +318,9 @@ if mount | grep -q "$boot_partition_path"
then then
info "$boot_partition_path is allready mounted..." info "$boot_partition_path is allready mounted..."
else else
if mount | grep -q "$root_partition_path" if mount | grep -q "$root_mapper_path"
then then
info "$root_partition_path is allready mounted..." info "$root_mapper_path is allready mounted..."
else else
mount_partitions mount_partitions
fi fi
@ -418,34 +427,7 @@ fi
if [ "$encrypt_system" == "y" ] if [ "$encrypt_system" == "y" ]
then then
# Adapted this instruction for setting up encrypted systems @see https://gist.github.com/gea0/4fc2be0cb7a74d0e7cc4322aed710d38 # Adapted this instruction for setting up encrypted systems @see https://gist.github.com/gea0/4fc2be0cb7a74d0e7cc4322aed710d38
# The following variable is neccessary because of a bug @see https://bbs.archlinux.de/viewtopic.php?id=33554
encrypted_partition_uuid=$(blkid "$encrypted_partition_path" -s UUID -o value)
rescue_suffix=".$(date +%s).rescue"
mkinitcpio_path="/etc/mkinitcpio.conf"
mkinitcpio_rescue_path="$mkinitcpio_path$rescue_suffix"
mkinitcpio_search_modules="MODULES=()"
mkinitcpio_replace_modules="MODULES=(g_cdc usb_f_acm usb_f_ecm smsc95xx g_ether)"
mkinitcpio_search_binaries="BINARIES=()"
mkinitcpio_replace_binaries=$(echo "BINARIES=(/usr/lib/libgcc_s.so.1)"| sed -e 's/[\/&]/\\&/g')
mkinitcpio_search_hooks="HOOKS=(base udev autodetect modconf block filesystems keyboard fsck)"
mkinitcpio_replace_hooks="HOOKS=(base udev autodetect modconf block sleep netconf dropbear encryptssh filesystems keyboard fsck)"
root_mapper_path="/dev/mapper/root"
fstab_path="/mnt/etc/fstab"
fstab_rescue_path="$fstab_path$rescue_suffix"
crypttab_path="/mnt/etc/crypttab"
crypttab_rescue_path="$crypttab_path$rescue_suffix"
boot_txt_path="/boot/boot.txt"
boot_txt_rescue_path="$boot_txt_path$rescue_suffix"
boot_txt_delete_line=$(echo "part uuid \${devtype} \${devnum}:2 uuid" | sed -e 's/[]\/$*.^[]/\\&/g')
boot_txt_setenv_origin=$(echo "setenv bootargs console=ttyS1,115200 console=tty0 root=PARTUUID=\${uuid} rw rootwait smsc95xx.macaddr=\"\${usbethaddr}\"" | sed -e 's/[]\/$*.^[]/\\&/g')
boot_txt_setenv_replace=$(echo "setenv bootargs console=ttyS1,115200 console=tty0 ip=::::$target_hostname:eth0:dhcp cryptdevice=UUID=$encrypted_partition_uuid:root root=$root_mapper_path rw rootwait smsc95xx.macaddr=\"\${usbethaddr}\""| sed -e 's/[\/&]/\\&/g')
info "Setup encryption..." && info "Setup encryption..." &&
question "Type in encryption password: " && read -r luks_password
question "Repeat encryption password:" && read -r luks_password_repeat
if [ "$luks_password" != "$luks_password_repeat" ]
then
error "Passwords didn't match."
fi
( (
echo "pacman --noconfirm -S --needed $(get_packages "server/luks") &&" echo "pacman --noconfirm -S --needed $(get_packages "server/luks") &&"
echo "cp -v /home/$target_username/.ssh/authorized_keys /etc/dropbear/root_key &&" echo "cp -v /home/$target_username/.ssh/authorized_keys /etc/dropbear/root_key &&"
@ -456,13 +438,8 @@ if [ "$encrypt_system" == "y" ]
echo "echo \"Content of $mkinitcpio_path:\$(cat \"$mkinitcpio_path\")\" &&" echo "echo \"Content of $mkinitcpio_path:\$(cat \"$mkinitcpio_path\")\" &&"
#Concerning mkinitcpio warning @see https://gist.github.com/imrvelj/c65cd5ca7f5505a65e59204f5a3f7a6d #Concerning mkinitcpio warning @see https://gist.github.com/imrvelj/c65cd5ca7f5505a65e59204f5a3f7a6d
echo "mkinitcpio -P &&" echo "mkinitcpio -P &&"
echo "echo '$luks_password' | sudo cryptsetup -v luksFormat -c aes-xts-plain64 -s 512 -h sha512 --use-random -i 1000 $encrypted_partition_path &&"
echo "echo '$luks_password' | sudo cryptsetup -v luksOpen $encrypted_partition_path root &&"
echo "mkfs.ext4 $root_mapper_path &&"
echo "mount $root_mapper_path /mnt &&"
echo "rsync --info=progress2 -axHAX / /mnt/ &&"
echo "cp -v $fstab_path $fstab_rescue_path &&" echo "cp -v $fstab_path $fstab_rescue_path &&"
echo "echo $root_mapper_path' / ext4 defaults,noatime 0 1' >> $fstab_path &&" echo "echo '$root_mapper_path / ext4 defaults,noatime 0 1' >> $fstab_path &&"
echo "echo \"Content of $fstab_path:\$(cat \"$fstab_path\")\" &&" echo "echo \"Content of $fstab_path:\$(cat \"$fstab_path\")\" &&"
echo "cp -v $crypttab_path $crypttab_rescue_path &&" echo "cp -v $crypttab_path $crypttab_rescue_path &&"
echo "echo 'root UUID=$encrypted_partition_uuid none luks' >> $crypttab_path &&" echo "echo 'root UUID=$encrypted_partition_uuid none luks' >> $crypttab_path &&"
@ -473,9 +450,7 @@ if [ "$encrypt_system" == "y" ]
echo "sed -i 's/$boot_txt_setenv_origin/$boot_txt_setenv_replace/g' $boot_txt_path &&" echo "sed -i 's/$boot_txt_setenv_origin/$boot_txt_setenv_replace/g' $boot_txt_path &&"
echo "echo \"Content of $boot_txt_path:\$(cat \"$boot_txt_path\")\" &&" echo "echo \"Content of $boot_txt_path:\$(cat \"$boot_txt_path\")\" &&"
echo "cd /boot/ && ./mkscr &&" echo "cd /boot/ && ./mkscr &&"
echo "umount $root_mapper_path &&" echo "exit || echo 'Error in chroot environment!'"
echo "sudo cryptsetup -v luksClose root &&"
echo "exit || echo 'Error in chroot environment!' echo 'Trying to close decrypted root.'; sudo cryptsetup -v luksClose root"
) | chroot "$root_mount_path" /bin/bash || error ) | chroot "$root_mount_path" /bin/bash || error
fi fi