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https://0xacab.org/liberate/backupninja.git
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[borg] added a borg helper
This commit is contained in:
Ben
Jerome Charaoui
parent
02b6d883aa
commit
c4e9125a71
358
handlers/borg.helper.in
Normal file
358
handlers/borg.helper.in
Normal file
@ -0,0 +1,358 @@
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# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
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# vim: set filetype=sh sw=3 sts=3 expandtab autoindent:
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#
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# TODO: encryption support
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#
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HELPERS="$HELPERS borg:deduplicated_archive_based_backup"
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declare -a borg_includes
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declare -a borg_excludes
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# FUNCTIONS
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do_borg_host_includes() {
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set -o noglob
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# choose the files to backup
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REPLY=
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while [ -z "$REPLY" ]; do
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formBegin "$borg_title - host system: includes"
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for ((i=0; i < ${#borg_includes[@]} ; i++)); do
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formItem include ${borg_includes[$i]}
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done
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formItem include
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formItem include
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formItem include
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formItem include
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formItem include
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formItem include
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formItem include
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formItem include
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formDisplay
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[ $? = 0 ] || return
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unset borg_includes
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borg_includes=($REPLY)
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done
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set +o noglob
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}
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do_borg_excludes() {
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set -o noglob
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formBegin "$borg_title: host system: excludes"
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for ((i=0; i < ${#borg_excludes[@]} ; i++))
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do
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formItem exclude ${borg_excludes[$i]}
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done
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formItem exclude
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formDisplay
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[ $? = 0 ] || return
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unset borg_excludes
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borg_excludes=($REPLY)
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set +o noglob
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}
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do_borg_src() {
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do_borg_host_includes
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[ $? = 0 ] || return 1
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do_borg_excludes
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[ $? = 0 ] || return 1
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_src_done="(DONE)"
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setDefault dest
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}
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do_borg_dest() {
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declare -a tmp_array
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set -o noglob
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REPLY=
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while [ -z "$REPLY" -o -z "$borg_directory" -o -z "$borg_host" -o -z "$borg_user" -o -z "$borg_archive" -o -z "$borg_compression" ]
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do
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formBegin "$borg_title - destination"
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formItem "directory" "$borg_directory"
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formItem "host" "$borg_host"
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formItem "user" "$borg_user"
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formItem "archive_name" "$borg_archive"
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formItem "compression" "$borg_compression"
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formDisplay
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[ $? = 0 ] || return
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tmp_array=($REPLY)
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borg_directory=${tmp_array[0]}
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borg_host=${tmp_array[1]}
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borg_user=${tmp_array[2]}
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borg_archive=${tmp_array[3]}
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borg_compression=${tmp_array[4]}
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done
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set +o noglob
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_dest_done="(DONE)"
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setDefault conn
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}
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do_borg_local_dir() {
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local dir_status="ok"
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IFS=$' \t\n'
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if [ "$_dest_done" = "" ]; then
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msgBox "$borg_title: error" "You must first configure the destination."
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return 1
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fi
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echo "Testing to see if the borg backup directory exists and is writable"
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test -d $borg_directory
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if [ $? = 0 ]; then
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test -w $borg_directory
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if [ $? != 0 ]; then
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msgBox "destination directory is not writable!" "The destination directory is not writable by the user you specified. Please fix the permissions on the directory and then try again."
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dir_status=failed
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fi
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else
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booleanBox "Destination does not exist" "The destination backup directory does not exist, do you want me to create it for you?"
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if [ $? = 0 ]; then
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mkdir -p $borg_directory
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result=$?
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case $result in
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0) msgBox "$borg_title: success" "Creation of the destination directory was a success!";;
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1) msgBox "$borg_title: error" "Creation of the destination directory failed, check the directory permissions."
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dir_status=failed;;
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esac
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fi
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fi
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[ "$dir_status" = "ok" ] || return 1
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}
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do_borg_ssh_con() {
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local remote_status="ok"
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IFS=$' \t\n'
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if [ "$_dest_done" = "" ]; then
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msgBox "$borg_title: error" "You must first configure the destination."
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return 1
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elif [ "$borg_user" = "" ]; then
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msgBox "$borg_title: error" "You must first configure the destination user."
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return 1
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elif [ "$borg_host" = "" ]; then
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msgBox "$borg_title: error" "You must first configure the destination host."
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return 1
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else
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booleanBox "$borg_title" "This step will create a ssh key for the local root user with no passphrase (if one does not already exist), and attempt to copy root's public ssh key to authorized_keys file of $borg_user@$borg_host. This will allow the local root to make unattended backups to $borg_user@$borg_host.\n\n\nAre you sure you want to continue?"
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[ $? = 0 ] || return 1
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fi
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if [ ! -f /root/.ssh/id_dsa.pub -a ! -f /root/.ssh/id_rsa.pub ]; then
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echo "Creating local root's ssh key"
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ssh-keygen -t rsa -b 4096 -f /root/.ssh/id_rsa -N ""
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echo "Done. hit return to continue"
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read
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fi
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ssh -o PreferredAuthentications=publickey $borg_host -l $borg_user "exit" 2> /dev/null
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if [ $? -ne 0 ]; then
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echo "Copying root's public ssh key to authorized_keys of $borg_user@$borg_host. When prompted, specify the password for user $borg_user@$borg_host."
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ssh-copy-id -i /root/.ssh/id_[rd]sa.pub $borg_user@$borg_host
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if [ $? -ne 0 ]; then
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echo "FAILED: Couldn't copy root's public ssh key to authorized_keys of $borg_user@$borg_host."
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ssh $borg_user@$borg_host 'test -w .ssh || test -w .'
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result=$?
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echo "Hit return to continue."
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read
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case $result in
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0 ) msgBox "$borg_title: error" "Directories are writable: Probably just a typo the first time." ;;
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1 ) msgBox "$borg_title: error" "Connected successfully to $borg_user@$borg_host, but unable to write. Check ownership and modes of ~$borg_user on $borg_host." ;;
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255 ) msgBox "$borg_title: error" "Failed to connect to $borg_user@$borg_host. Check hostname, username, and password. Also, make sure sshd is running on the destination host." ;;
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* ) msgBox "$borg_title: error" "Unexpected error." ;;
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esac
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return
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else
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echo "Done. hit return to continue"
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read
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fi
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else
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echo "root@localhost is already in authorized_keys of $borg_user@$borg_host."
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echo "Hit return to continue."
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read
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fi
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# test to see if the remote borg backup directory exists and is writable
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echo "Testing to see if remote borg backup directory exists and is writable"
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ssh $borg_user@$borg_host "test -d ${borg_directory}"
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if [ $? = 0 ]; then
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ssh $borg_user@$borg_host "test -w $borg_directory"
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if [ $? != 0 ]; then
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msgBox "destination directory is not writable!" "The remote destination directory is not writable by the user you specified. Please fix the permissions on the directory and then try again."
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remote_status=failed
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fi
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else
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booleanBox "Remote directory does not exist" "The destination backup directory does not exist, do you want me to create it for you?"
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if [ $? = 0 ]; then
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ssh $borg_user@$borg_host "mkdir -p ${borg_directory}"
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result=$?
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case $result in
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0) msgBox "$borg_title: success" "Creation of the remote destination directory was a success!";;
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1) msgBox "$borg_title: error" "Connected successfully to $borg_user@$borg_host, but was unable to create the destination directory, check the directory permissions."
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remote_status=failed;;
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255) msgBox "$borg_title: error" "Failed to connect to $borg_user@$borg_host. Check hostname, username, and password. Also, make sure sshd is running on the destination host."
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remote_status=failed;;
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*) msgBox "$borg_title: error" "Unexpected error."
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remote_status=failed;;
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esac
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fi
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fi
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[ "$remote_status" = "ok" ] || return 1
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}
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do_borg_con() {
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echo "Checking for local install of borg"
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which borg
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if [ $? != 0 ]; then
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msgBox "$borg_title: error" "borg executable not found, please install borg ($borg_docs/installation.html)."
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return
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fi
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if [ "$borg_host" != "localhost"]; then
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do_borg_ssh_con
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else
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do_borg_local_dir
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fi
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[ $? = 0 ] || return
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echo "SUCCESS: Everything looks good!"
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echo "Hit return to continue."
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read
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_con_done="(DONE)"
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setDefault finish
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}
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do_borg_prune() {
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declare -a tmp_array
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set -o noglob
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REPLY=
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formBegin "$borg_title - pruning (how many backups to keep)"
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formItem "daily" "$borg_keepdaily"
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formItem "weekly" "$borg_keepweekly"
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formItem "monthly" "$borg_keepmonthly"
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formDisplay
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[ $? = 0 ] || return
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tmp_array=($REPLY)
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borg_keepdaily=${tmp_array[0]}
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borg_keepweekly=${tmp_array[1]}
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borg_keepmonthly=${tmp_array[2]}
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set +o noglob
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_prune_done="(DONE)"
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}
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do_borg_finish() {
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get_next_filename $configdirectory/90.borg
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cat > $next_filename <<EOF
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## for more options see
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## - example.borg
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## - $borg_docs
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[source]
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EOF
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## includes ##
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set -o noglob
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for ((i=0; i < ${#borg_includes[@]} ; i++)); do
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echo "include = ${borg_includes[$i]}" >> $next_filename
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done
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set +o noglob
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## excludes ##
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set -o noglob
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for ((i=0; i < ${#borg_excludes[@]} ; i++)); do
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echo exclude = ${borg_excludes[$i]} >> $next_filename
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done
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set +o noglob
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cat >> $next_filename <<EOF
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## for more info see : borg prune -h
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keepdaily = $borg_keepdaily
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keepweekly = $borg_keepweekly
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keepmonthly = $borg_keepmonthly
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[dest]
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directory = $borg_directory
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host = $borg_host
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user = $borg_user
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compression = $borg_compression
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archive = $borg_archive
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EOF
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chmod 600 $next_filename
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}
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borg_main_menu() {
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while true; do
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srcitem="choose files to include & exclude $_src_done"
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destitem="configure backup destination $_dest_done"
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conitem="test connection and destination dir $_con_done"
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pruneitem="configure pruning (optional) $_prune_done"
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menuBox "$borg_title" "choose a step:" \
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src "$srcitem" \
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dest "$destitem" \
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conn "$conitem" \
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prune "$pruneitem" \
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finish "finish and create config file"
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[ $? = 0 ] || return
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result="$REPLY"
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case "$result" in
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"src") do_borg_src;;
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"dest") do_borg_dest;;
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"conn") do_borg_con;;
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"prune") do_borg_prune;;
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"finish")
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if [[ "$_con_done$_dest_done$_src_done" != "(DONE)(DONE)(DONE)" ]]; then
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msgBox "$borg_title" "You cannot create the configuration file until mandatory steps are completed."
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else
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do_borg_finish
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return
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fi
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;;
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esac
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done
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}
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borg_wizard() {
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# Global variables
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borg_title="borg action wizard"
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borg_docs="http://borgbackup.readthedocs.io/en/stable"
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_src_done=
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_dest_done=
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_con_done=
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borg_directory=/backup/`hostname`
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borg_user=root
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borg_host=localhost
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borg_compression=lz4
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borg_archive='{now:%Y-%m-%d}'
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borg_keepdaily=7
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borg_keepweekly=4
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borg_keepmonthly=-1
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# Global variables whose '*' shall not be expanded
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set -o noglob
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borg_includes=(/var/spool/cron/crontabs /var/backups /etc /root /home /usr/local/*bin)
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borg_excludes=(/home/*/.gnupg /home/*/.local/share/Trash /home/*/.Trash /home/*/.thumbnails)
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set +o noglob
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borg_main_menu
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}
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