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

   1 #!/bin/sh
   2 set -e
   3
   4 standard_repo="borg"
   5 config_file="${HOME}/.borgrepos"
   6
   7 usage() {
   8     echo "Need operation as argument, one of:"
   9     echo "init"
  10     echo "store"
  11     echo "check"
  12     echo "export_keyfiles"
  13     echo "orgpush"
  14     echo "orgpull"
  15     false
  16 }
  17
  18 read_pw() {
  19     if [ "${#SSH_AGENT_PID}" -eq 0 ]; then
  20         eval $(ssh-agent)
  21         echo "ssh-add"
  22         stty -echo
  23         ssh-add
  24         stty echo
  25     fi
  26     if [ "${#BORG_PASSPHRASE}" -eq 0 ]; then
  27         stty -echo
  28         printf "Borg passphrase: "
  29         read password
  30         stty echo
  31         printf "\n"
  32         export BORG_PASSPHRASE="${password}"
  33     fi
  34 }
  35
  36 if [ ! -f "${config_file}" ]; then
  37     echo '# file read ends at last newline' >> "${config_file}"
  38 fi
  39 if [ "$#" -lt 1 ]; then
  40     usage
  41 fi
  42 first_arg="$1"
  43 shift
  44 if [ "${first_arg}" = "init" ]; then
  45     if [ ! "$#" -eq 1 ]; then
  46         echo "Need exactly one argument: target of form user@server"
  47         false
  48     fi
  49     target="$1"
  50     echo "Initializing: ${target}"
  51     borg init --verbose --encryption=keyfile "${target}:${standard_repo}"
  52     tmp_file="/tmp/new_borgrepos"
  53     echo "${target}" > "${tmp_file}"
  54     cat "${config_file}" >> "${tmp_file}"
  55     cp "${tmp_file}" "${config_file}"
  56 elif [ "${first_arg}" = "store" ]; then
  57     if [ ! "$#" -eq 2 ]; then
  58         echo "Need precisely two arguments: archive name and path to archive."
  59         false
  60     fi
  61     archive_name=$1
  62     shift
  63     to_backup="$@"
  64     read_pw
  65     cat "${config_file}" | while read line; do
  66         first_char=$(echo "${line}" | cut -c1)
  67         if [ "${first_char}" = "#" ]; then
  68             continue
  69         fi
  70         repo="${line}:${standard_repo}"
  71         archive="${repo}::${archive_name}-{utcnow:%Y-%m-%dT%H:%M}"
  72         echo "Creating archive: ${archive}"
  73         borg create --verbose --list "${archive}" "${to_backup}"
  74     done
  75 elif [ "${first_arg}" = "check" ]; then
  76     if [ ! "$#" -eq 0 ]; then
  77         echo "Need no arguments"
  78         false
  79     fi
  80     read_pw
  81     cat "${config_file}" | while read line; do
  82         first_char=$(echo "${line}" | cut -c1)
  83         if [ "${first_char}" = "#" ]; then
  84             continue
  85         fi
  86         repo="${line}:${standard_repo}"
  87         echo "Checking repo: ${repo}"
  88         borg check --verbose "${repo}"
  89     done
  90 elif [ "${first_arg}" = "export_keyfiles" ]; then
  91     if [ ! "$#" -eq 1 ]; then
  92         echo "Need output tar file name."
  93         false
  94     fi
  95     tar_target="${1}"
  96     tmp_dir="${HOME}/.borgtmp"
  97     keyfiles_dir="${tmp_dir}/borg_keyfiles"
  98     mkdir -p "${keyfiles_dir}"
  99     cat "${config_file}" | while read line; do
 100         first_char=$(echo "${line}" | cut -c1)
 101         if [ "${first_char}" = "#" ]; then
 102             continue
 103         fi
 104         repo="${line}:${standard_repo}"
 105         borg key export "${repo}" "${keyfiles_dir}/${line}"
 106     done
 107     cur_dir="$(pwd)"
 108     cd "${tmp_dir}"
 109     target=$(basename "${keyfiles_dir}")
 110     tar cf "${tar_target}" "${target}"
 111     mv "${tar_target}" "${cur_dir}"
 112     cd
 113     rm -rf "${tmp_dir}"
 114 elif [ "${first_arg}" = "orgpush" ]; then
 115     archive_name="orgdir"
 116     to_backup=~/org
 117     read_pw
 118     cat "${config_file}" | while read line; do
 119         first_char=$(echo "${line}" | cut -c1)
 120         if [ "${first_char}" = "#" ]; then
 121             continue
 122         fi
 123         repo="${line}:${standard_repo}"
 124         archive="${repo}::${archive_name}-{utcnow:%Y-%m-%dT%H:%M}"
 125         echo "Creating archive: ${archive}"
 126         borg create --verbose --list "${archive}" "${to_backup}" --exclude ~/org/.git
 127     done
 128 elif [ "${first_arg}" = "orgpull" ]; then
 129     echo "Doing ORGPULL, potentially overwriting important data. Hit Return to continue, last chance to abort!"
 130     read _
 131     archive_name="orgdir"
 132     read_pw
 133     cd /
 134     cat "${config_file}" | while read line; do
 135         first_char=$(echo "${line}" | cut -c1)
 136         if [ "${first_char}" = "#" ]; then
 137             continue
 138         fi
 139         repo="${line}:${standard_repo}"
 140         archive=$(borg list "${repo}" | grep "${orgdir}" | tail -1 | cut -f1 -d' ')
 141         echo "Pulling archive: ${archive}"
 142         borg extract --verbose "${repo}::${archive}"
 143         break
 144     done
 145 else
 146     usage
 147 fi