overdue

restic.sh

@@ -0,0 +1,150 @@
+#! /bin/bash
+
+function main() {
+   set -e
+   set -u
+
+   cd "$(dirname "${BASH_SOURCE[0]}")"
+   export GOPATH="$PWD/restic-go"
+
+   if [ -z "${PASSWORD:-""}" ]; then
+      read -sp "Password: " PASSWORD
+      echo ""
+   fi
+
+   install
+
+   configure
+
+   local action="$1"
+   shift
+   case "$action" in
+      clean ) clean_remote "$@"                 ;;
+      backup ) backup "$@"                      ;;
+      restore ) restore "$@"                    ;;
+      forget ) fatal "Refusing custom forget"   ;;
+      * )      RESTIC "$action" "$@"            ;;
+   esac
+}
+
+function install() {
+   mkdir -p "$GOPATH/bin/$(uname)"
+   for i in ncw/rclone restic/restic; do
+      local b="${i##*/}"
+      if [ -e "$GOPATH/bin/$(uname)/$b" ]; then
+         continue
+      fi
+      go get -u "github.com/$i" || true
+      pushd "$GOPATH/src/github.com/$i"
+      case "$i" in
+         restic* )
+            go run build.go
+            mv "./$b" "$GOPATH/bin/$(uname)/$b"
+         ;;
+         * )
+            go install
+            mv "$GOPATH/bin/$b" "$GOPATH/bin/$(uname)/$b"
+         ;;
+      esac
+      popd
+   done
+}
+
+function configure() {
+   mkdir -p "$PWD/config"
+   if [ ! -e "$PWD/config/rclone" ]; then
+      configure_rclone
+   fi
+   if [ ! -e "$PWD/config/restic" ]; then
+      configure_restic
+   fi
+}
+
+function configure_rclone() {
+   RCLONE config create remote drive
+   #RCLONE config create remote-enc crypt \
+   #   remote remote:cloudly/restic \
+   #   filename_encryption obfuscate \
+   #   directory_name_encryption true \
+   #   password $PASSWORD \
+   #   password2 ""
+}
+
+function configure_restic() {
+   RESTIC init
+   touch "$PWD/config/restic"
+}
+
+function backup() {
+   for arg in "$@"; do
+      local real="$(realpath "$arg")"
+      if [ "$real" == "${real#$HOME/}" ]; then
+         log "Cowardly skipping $arg ($real) for not being under \$HOME ($HOME)"
+         continue
+      fi
+      log "BACKUP $real"
+      RESTIC backup \
+         -e "**.sw*" \
+         --tag "${real#$HOME/}" \
+         "$real"
+   done
+}
+
+function restore() {
+   for arg in "$@"; do
+      if [ -e "$arg" ] || [ -d "$arg" ]; then
+         arg="$(realpath "$arg")"
+      fi
+      local latest="$(RESTIC snapshots --last | sort -k 2 | grep '20[0-9][0-9].[0-9][0-9].[0-9][0-9]' | tail -n 1)"
+      local id="$(echo "$latest" | awk '{print $1}')"
+      local path="$(echo "$latest" | awk '{print $5}')"
+      local rpath="$(echo "$latest" | awk '{print $6}')"
+      log "RESTORE $id as $HOME/$path as $HOME/$path-restore"
+      rm -rf "$HOME/$path-"{dump,restore} 2> /dev/null || true
+      mkdir -p "$HOME/$path-dump"
+      RESTIC restore $id --target "$HOME/$path-dump"
+      mv "$HOME/$path-dump/${rpath#/}" "$HOME/$path-restore"
+      rm -rf "$HOME/$path-"{dump,old} || true
+      if [ -d "$HOME/$path" ]; then
+         mv "$HOME/$path" "$HOME/$path-old"
+      fi
+      mv "$HOME/$path-restore" "$HOME/$path"
+   done
+   clean_remote
+}
+
+function clean_remote() {
+   RESTIC forget --prune --cleanup-cache --keep-last 2 --group-by host,tags "$@"
+   RESTIC check
+}
+
+function RCLONE() {
+   $GOPATH/bin/$(uname)/rclone --config=$PWD/config/rclone --ask-password=false "$@"
+}
+
+function RESTIC() {
+   RESTIC_PASSWORD=$PASSWORD \
+      $GOPATH/bin/$(uname)/restic \
+      -r rclone:remote:cloudly/restic-plain/backup \
+      -o rclone.program=$GOPATH/bin/$(uname)/rclone \
+      -o rclone.args="serve restic --stdio --b2-hard-delete --drive-use-trash=false --config $PWD/config/rclone --bwlimit 26M --ask-password=false" \
+      "$@"
+
+      #-r rclone:remote-enc:backup
+}
+
+function log() {
+   echo "$(date +%H:%M:%S): $@" >&2
+}
+
+function fatal() {
+   log "$@"
+   exit 1
+}
+
+if [ "$0" == "${BASH_SOURCE[0]}" ]; then
+   SECONDS=0
+   log "Start"
+   main "$@"
+   log "Stop ($?): $(python3 -c "print(int(10*$SECONDS/60)/10.0, 'minutes')")"
+fi