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|
{ lib, writeBashBin, writeText, getBins
, borgbackup, cryptsetup
, ghostscript
, openssl
, mandoc
, gpp
, sternenseemann
}:
let
self = sternenseemann.scripts;
backupExcludes = writeText "backup-excludes" ''
/home/lukas/.cache
/home/lukas/.config/chromium
/home/lukas/.config/google-chrome
/home/lukas/.config/discord
/home/lukas/.stack
/home/lukas/.notmuch
/home/lukas/.local/share/
/home/lukas/Mail/.notmuch
/home/lukas/.npm
/home/lukas/.gem
/home/lukas/.npm
/home/lukas/.meteor
/home/lukas/tmp
/home/lukas/.cabal
/home/lukas/.bundle
/home/lukas/.opam
/home/lukas/files/serverkram/minecraft/
/home/lukas/Videos/movies
/home/lukas/Videos/dok
/home/lukas/Videos/series
/home/lukas/Videos/dl
/home/lukas/src/cpp/llvm-project
'';
bins = (getBins cryptsetup [ "cryptsetup" ])
// (getBins borgbackup [ "borg" ])
// (getBins mandoc [ "man" ])
// (getBins openssl [ "openssl" ])
// (getBins ghostscript [ "gs" ])
;
in
{
default = [
self.borg-wrapper
self.lowview
self.pdfcombine
self.pdfrange
self.certprint
];
borg-wrapper = writeBashBin "borg-wrapper" ''
BACKUP_DRIVE="$1"
MAPPER=backup
MOUNTPOINT=/mnt
export BORG_REPO=/mnt/fliewatuet-backup
BORG=${bins.borg}
CRYPTSETUP=${bins.cryptsetup}
die() {
echo "$1" >> /dev/stderr
exit 1
}
mount_luks() {
echo "Opening LUKS disk"
$CRYPTSETUP open --type luks "$BACKUP_DRIVE" $MAPPER || die "Could not open LUKS disk"
echo "Mounting LUKS disk via mapper"
mount "/dev/mapper/$MAPPER" "$MOUNTPOINT" || die "Could not mount disk"
}
umount_luks() {
sync
if mountpoint -q "$MOUNTPOINT"; then
umount "$MOUNTPOINT"
fi
if [[ -e "/dev/mapper/$MAPPER" ]]; then
$CRYPTSETUP close --type luks "$MAPPER"
fi
}
backup() {
if mountpoint -q "$MOUNTPOINT"; then
echo "Starting Backup"
$BORG create \
--verbose \
--filter AME \
--list \
--stats \
--show-rc \
--compression lz4 \
--exclude-caches \
--exclude-from ${backupExcludes}\
::'{hostname}-{now}' \
/etc/nixos \
/home || die "Backup failed"
$BORG prune \
--list \
--prefix '{hostname}-' \
--show-rc \
--keep-daily 7 \
--keep-weekly 4 \
--keep-monthly 6 || die "Pruning failed"
else
echo "No backup drive mounted"
fi
}
COMMAND="$2"
if [[ -n "$COMMAND" ]]; then
case "$COMMAND" in
"mount")
mount_luks
;;
"umount")
umount_luks
;;
"backup")
backup
;;
*)
die "No such command: $COMMAND"
;;
esac
else
mountpoint -q "$MOUNTPOINT" || mount_luks
backup
umount_luks
fi
'';
certprint = writeBashBin "certprint" ''
OPENSSL=${bins.openssl}
server=$1
port=$2
shift
shift
$OPENSSL s_client -connect "$server:$port" $@ < /dev/null | \
$OPENSSL x509 -fingerprint -sha256 -noout -in /dev/stdin
'';
lowview = writeBashBin "lowview" ''
lowdown -Tterm $@ | less -R
'';
pdfcombine = writeBashBin "pdfcombine" ''
out=$1
shift
${bins.gs} -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile="$out" $@
'';
pdfrange = writeBashBin "pdfrange" ''
# this function uses 3 arguments:
# $1 is the first page of the range to extract
# $2 is the last page of the range to extract
# $3 is the input file
# output file will be named "inputfile_pXX-pYY.pdf"
${bins.gs} -sDEVICE=pdfwrite -dNOPAUSE -dBATCH -dSAFER \
-dFirstPage="''${1}" \
-dLastPage="''${2}" \
-sOutputFile="''${3%.pdf}_p''${1}-p''${2}.pdf" \
"''${3}"
'';
}
|
