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some refactoring and err function fixes

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Von Random 2014-12-29 18:13:47 +03:00
parent 31ba06126a
commit ffe5c9ac16
1 changed files with 27 additions and 17 deletions
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44
backup.zsh
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@ -2,6 +2,8 @@
self_name=$0
default_cfg='/usr/local/etc/backup.cfg'
default_postfix=$(date +%F-%H%M)
default_ftp_port='21'
default_ssh_port='22'
function err
{
@ -26,10 +28,18 @@ function usage
function apply_config
{
source $cfg || err 15 'Config file does not exist'
[[ -z $source_dirs ]] && { cfg_err 'Backup source'; exit 5 }
[[ -z $remote_host ]] && { cfg_err 'Remote host'; exit 5 }
[[ -z $protocol ]] && { cfg_err 'Backup protocol'; exit 5 }
[[ -z $backup_dir && $protocol != 'ssh' ]] && { cfg_err 'Target directory'; exit 5 }
if [[ -z $source_dirs ]]; then
cfg_err 'Backup source'
exit 5
fi
if [[ -z $remote_host ]]; then
cfg_err 'Remote host'
exit 5
fi
if [[ -z $backup_dir && $protocol != 'ssh' ]]; then
cfg_err 'Target directory'
exit 5
fi
if [[ -z $local_host ]]; then
local_host=$HOST
fi
@ -39,33 +49,34 @@ function apply_config
else
postfix=$outfile_postfix
fi
if [[ -z $remote_port ]]; then
case $protocol in
('ftp'|'ftps') remote_port='21';;
('sftp'|'ssh') remote_port='22';;
('local') unset remote_port;;
(*) err 1 "$protocol is not a valid value for the protocol option.";;
esac
case $protocol in
('ftp'|'ftps') port=${remote_port:-$default_ftp_port};;
('sftp'|'ssh') port=${remote_port:-$default_ssh_port};;
('local') unset remote_port;;
(*) cfg_err 'Backup protocol'; exit 5;;
esac
if [[ ! $remote_port =~ ^[0-9]+$ ]]; then
err 'Remote port is not a numeric value.'
fi
case $compress_format in
('xz') compress_flag='J' ;;
('bz2') compress_flag='j' ;;
('gz') compress_flag='z' ;;
('') unset compress_flag; unset compress_format ;;
(*) err 1 "$compress_format is not a valid value for the compression format option.";;
(*) err "$compress_format is not a valid value for the compression format option."; exit 5;;
esac
if [[ -n $exclude_list ]]; then
if [[ -r $exclude_list ]]; then
exclude_option='-X'
else
err 1 "Exclusion list $exclude_list is either unreadable or does not exist."
err "Exclusion list $exclude_list is either unreadable or does not exist."
fi
fi
if [[ -n $snap_file ]]; then
if printf '' >> $snap_file; then
snapshot_option='-g'
else
err 1 "Snapshot file $snap_file cannot be written."
err "Snapshot file $snap_file cannot be written."
fi
fi
}
@ -96,9 +107,8 @@ function store # store to local or remote
{
case $protocol in
('local') dd of=$outfile ;;
('ssh') ssh -p$remote_port $remote_user@$remote_host "dd of=$outfile" ;;
('sftp'|'ftp'|'ftps') curl -ksS -T - $protocol://$remote_host:$remote_port/$outfile -u $remote_user:$remote_pass ;;
(*) err 1 'Wrong protocol!' ;;
('ssh') ssh -p$port $remote_user@$remote_host "dd of=$outfile" ;;
('sftp'|'ftp'|'ftps') curl -ksS -T - $protocol://$remote_host:$port/$outfile -u $remote_user:$remote_pass ;;
esac
}