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#!/bin/bash
#
# Hidden services backup restoration.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program.  If not, see
# <http://www.gnu.org/licenses/>.

# Load.
source $APP_BASE/lib/hydra/functions || exit 1
hydra_config_load

# Parameters.
DATE="`date +%Y%m%d`"
HOST="$1"
SERVICE="hidden"
SERVICE_DIR="/var/lib/tor/hidden"
SERVICE_USER="debian-tor"
SERVICE_GROUP="debian-tor"

# Set restore environment.
hydra_backup_environment_service

# Restore hidden service folder from backup.
#
# Symlink creation on site instances like drupal should be done
# already by backup-restore-site.
for folder in `ls $RESTOREDIR/$SERVICE_DIR`; do
  if [ -e "$SERVICE_DIR/$folder/hostname" ]; then
    # A hidden service already exists
    if ! diff "$SERVICE_DIR/$folder/hostname" "$RESTOREDIR/$SERVICE_DIR/$folder/hostname" &> /dev/null; then
      # They're different hidden services!
      echo "Hidden service $hidden already exists on $SERVICE_DIR/$folder and differs from backup!"
      echo "Please fix this conflict manually and restore backups again."
    else
      echo "Hidden service $hidden already in place, no need to copy."
    fi
  else
    echo "Processing $SERVICE_DIR/$folder..."
    rm -rf $SERVICE_DIR/$folder
    cp -a $RESTOREDIR/$SERVICE_DIR/$folder $SERVICE_DIR/$folder
  fi
done

# Fix permissions.
chown -R $SERVICE_USER:$SERVICE_GROUP $SERVICE_DIR