l 4: add initscript

lass/4lib/default.nix

@@ -7,4 +7,134 @@ rec {
   getDefaultGateway = ip:
     concatStringsSep "." (take 3 (splitString "." ip) ++ ["1"]);
 
+  initscript = { pubkey ? config.krebs.users.lass.pubkey, disk ? "/dev/sda", vgname ? "vga", luksmap ? "ca" }: ''
+    #! /bin/sh
+    # usage: curl xu/~tv/init | sh
+    set -efu
+    # TODO nix-env -f '<nixpkgs>' -iA jq # if not exists (also version)
+    #       install at tmp location
+
+
+    case $(cat /proc/cmdline) in
+       *' root=LABEL=NIXOS_ISO '*) :;;
+       *) echo Error: unknown operating system >&2; exit 1;;
+    esac
+
+    disk=${disk}
+
+    bootdev=${disk}1
+
+    luksdev=${disk}2
+    luksmap=/dev/mapper/${luksmap}
+
+    vgname=${vgname}
+
+    rootdev=/dev/mapper/${vgname}-root
+    homedev=/dev/mapper/${vgname}-home
+    bkudev=/dev/mapper/${vgname}-bku
+
+    #
+    # partitioning
+    #
+
+    # http://en.wikipedia.org/wiki/GUID_Partition_Table
+    # undo:
+    #   dd if=/dev/zero bs=512 count=34 of=/dev/sda
+    # TODO zero last 34 blocks (lsblk -bno SIZE /dev/sda)
+    if ! test "$(blkid -o value -s PTTYPE "$disk")" = gpt; then
+      parted "$disk" \
+          mklabel gpt \
+          mkpart ESP fat32 1MiB 1024MiB  set 1 boot on \
+          mkpart primary 1024MiB 100%
+    fi
+
+    if ! test "$(blkid -o value -s PARTLABEL "$bootdev")" = ESP; then
+      echo zonk
+      exit 23
+    fi
+
+    if ! test "$(blkid -o value -s PARTLABEL "$luksdev")" = primary; then
+      echo zonk2
+      exit 23
+    fi
+
+    if ! cryptsetup isLuks "$luksdev"; then
+      # aes xts-plain64
+      cryptsetup luksFormat "$luksdev" \
+          -h sha512 \
+          --iter-time 5000
+    fi
+
+    if ! test -e "$luksmap"; then
+      cryptsetup luksOpen "$luksdev" "$(basename "$luksmap")"
+    fi
+    # cryptsetup close
+
+    if ! test "$(blkid -o value -s TYPE "$luksmap")" = LVM2_member; then
+      pvcreate "$luksmap"
+    fi
+
+    if ! vgdisplay -s "$vgname"; then vgcreate "$vgname" "$luksmap"; fi
+
+    lvchange -a y /dev/mapper/"$vgname"
+
+    if ! test -e "$rootdev"; then lvcreate -L 100G -n root "$vgname"; fi
+    if ! test -e "$homedev"; then lvcreate -L 100G -n home "$vgname"; fi
+    if ! test -e "$bkudev"; then lvcreate -L 200G -n bku "$vgname"; fi
+
+    # lvchange -a n "$vgname"
+
+
+    #
+    # formatting
+    #
+
+    if ! test "$(blkid -o value -s TYPE "$bootdev")" = vfat; then
+      mkfs.vfat "$bootdev"
+    fi
+
+    if ! test "$(blkid -o value -s TYPE "$rootdev")" = btrfs; then
+      mkfs.btrfs "$rootdev"
+    fi
+
+    if ! test "$(blkid -o value -s TYPE "$homedev")" = btrfs; then
+      mkfs.btrfs "$homedev"
+    fi
+
+    if ! test "$(blkid -o value -s TYPE "$bkudev")" = btrfs; then
+      mkfs.btrfs "$bkudev"
+    fi
+
+
+    if ! test "$(lsblk -n -o MOUNTPOINT "$rootdev")" = /mnt; then
+      mount "$rootdev" /mnt
+    fi
+    if ! test "$(lsblk -n -o MOUNTPOINT "$bootdev")" = /mnt/boot; then
+      mkdir -m 0000 -p /mnt/boot
+      mount "$bootdev" /mnt/boot
+    fi
+    if ! test "$(lsblk -n -o MOUNTPOINT "$homedev")" = /mnt/home; then
+      mkdir -m 0000 -p /mnt/home
+      mount "$homedev" /mnt/home
+    fi
+    if ! test "$(lsblk -n -o MOUNTPOINT "$bkudev")" = /mnt/bku; then
+      mkdir -m 0000 -p /mnt/bku
+      mount "$bkudev" /mnt/bku
+    fi
+
+    # umount -R /mnt
+
+
+    parted "$disk" print
+    lsblk "$disk"
+
+    key='${pubkey}'
+    if [ "$(cat /root/.ssh/authorized_keys 2>/dev/null)" != "$key" ]; then
+      mkdir -p /root/.ssh
+      echo "$key" > /root/.ssh/authorized_keys
+    fi
+    systemctl start sshd
+    ip route
+    echo READY.
+  '';
 }