computer-playbook/roles/backups-provider-user/files/ssh-wrapper.sh

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#!/bin/sh
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# log command
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if [ -n "$SSH_ORIGINAL_COMMAND" ]
then
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echo "`/bin/date`: $SSH_ORIGINAL_COMMAND" | systemd-cat -t "ssh-wrapper.sh"
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fi
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# define executable commands
get_hashed_machine_id="sha256sum /etc/machine-id";
hashed_machine_id="$($get_hashed_machine_id | head -c 64)"
get_backup_types="find /Backups/$hashed_machine_id/ -maxdepth 1 -type d -execdir basename {} ;";
# @todo This configuration is not scalable yet. If other backup services then docker-volume-backup are integrated, this logic needs to be optimized
get_version_directories="ls -d /Backups/$hashed_machine_id/docker-volume-backup/*"
last_version_directory="$($get_version_directories | tail -1)"
rsync_command="sudo rsync --server --sender -blogDtpre.iLsfxCIvu . $last_version_directory/"
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# filter commands
case "$SSH_ORIGINAL_COMMAND" in
"$get_hashed_machine_id")
$get_hashed_machine_id
;;
"$get_version_directories")
$get_version_directories
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;;
"$get_backup_types")
$get_backup_types
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;;
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"$rsync_command")
$rsync_command
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;;
*)
echo "This command is not supported."
exit 1
;;
esac