plomlompom.com Git - config/blob - all_new_2018/borg.sh

   1 #!/bin/sh
   2 set -e
   3
   4 standard_repo="borg"
   5 config_file="${HOME}/.borgrepos"
   6
   7 usage() {
   8     echo "Need operation as argument, one of:"
   9     echo "init"
  10     echo "store"
  11     echo "check"
  12     echo "export_keyfiles"
  13     false
  14 }
  15
  16 read_pw() {
  17     eval $(ssh-agent)
  18     ssh-add
  19     stty -echo
  20     printf "Passphrase: "
  21     read password
  22     stty echo
  23     printf "\n"
  24     export BORG_PASSPHRASE="${password}"
  25 }
  26
  27 if [ ! -f "${config_file}" ]; then
  28     echo '# file read ends at last newline' >> "${config_file}"
  29 fi
  30 if [ "$#" -lt 1 ]; then
  31     usage
  32 fi
  33 first_arg="$1"
  34 shift
  35 if [ "${first_arg}" = "init" ]; then
  36     if [ ! "$#" -eq 1 ]; then
  37         echo "Need exactly one argument: target of form user@server"
  38         false
  39     fi
  40     target="$1"
  41     echo "Initializing: ${target}"
  42     borg init --verbose --encryption=keyfile "${target}:${standard_repo}"
  43     tmp_file="/tmp/new_borgrepos"
  44     echo "${target}" > "${tmp_file}"
  45     cat "${config_file}" >> "${tmp_file}"
  46     cp "${tmp_file}" "${config_file}"
  47 elif [ "${first_arg}" = "store" ]; then
  48     if [ ! "$#" -eq 2 ]; then
  49         echo "Need precisely two arguments: archive name and path to archive."
  50         false
  51     fi
  52     archive_name=$1
  53     shift
  54     to_backup="$@"
  55     read_pw
  56     cat "${config_file}" | while read line; do
  57         first_char=$(echo "${line}" | cut -c1)
  58         if [ "${first_char}" = "#" ]; then
  59             continue
  60         fi
  61         repo="${line}:${standard_repo}"
  62         archive="${repo}::${archive_name}-{utcnow:%Y-%m-%dT%H:%M}"
  63         echo "Creating archive: ${archive}"
  64         borg create --verbose --list "${archive}" "${to_backup}"
  65     done
  66 elif [ "${first_arg}" = "check" ]; then
  67     if [ ! "$#" -eq 0 ]; then
  68         echo "Need no arguments"
  69         false
  70     fi
  71     read_pw
  72     cat "${config_file}" | while read line; do
  73         first_char=$(echo "${line}" | cut -c1)
  74         if [ "${first_char}" = "#" ]; then
  75             continue
  76         fi
  77         repo="${line}:${standard_repo}"
  78         echo "Checking repo: ${repo}"
  79         borg check --verbose "${repo}"
  80     done
  81 elif [ "${first_arg}" = "export_keyfiles" ]; then
  82     if [ ! "$#" -eq 1 ]; then
  83         echo "Need output tar file name."
  84         false
  85     fi
  86     tar_target="${1}"
  87     tmp_dir="${HOME}/.borgtmp"
  88     keyfiles_dir="${tmp_dir}/borg_keyfiles"
  89     mkdir -p "${keyfiles_dir}"
  90     cat "${config_file}" | while read line; do
  91         first_char=$(echo "${line}" | cut -c1)
  92         if [ "${first_char}" = "#" ]; then
  93             continue
  94         fi
  95         repo="${line}:${standard_repo}"
  96         borg key export "${repo}" "${keyfiles_dir}/${line}"
  97     done
  98     cur_dir="$(pwd)"
  99     cd "${tmp_dir}"
 100     target=$(basename "${keyfiles_dir}")
 101     tar cf "${tar_target}" "${target}"
 102     mv "${tar_target}" "${cur_dir}"
 103     cd
 104     rm -rf "${tmp_dir}"
 105 else
 106     usage
 107 fi