57 lines
1.4 KiB
Text
57 lines
1.4 KiB
Text
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#!/usr/bin/env fish
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# deps: fish, zstd, gpg, ssh
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set -q HOST || set HOST (head -n 1 /etc/hostname | tr -d '\n')
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# use the backup-host in the ~/.ssh/config as the default backup remote host
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set -q BACKUP_REMOTE_HOST || set BACKUP_REMOTE_HOST backup-host
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# use a user-specific dir by default to backup to
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set -q BACKUP_REMOTE_DIR || set BACKUP_REMOTE_DIR "/storage/"(whoami)"/backups/$HOST"
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set BACKUP_FILE_EXT .tar.zstd.gpg
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set target $argv[1]
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if test $target = '--list-backup-files'
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ssh $BACKUP_REMOTE_HOST "command ls -1 $BACKUP_REMOTE_DIR"
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exit 0
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else if test (count $argv) -lt 1
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echo "No remote backup filename provided (use --list-backup-files to show)"
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exit 1
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end
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ssh $BACKUP_REMOTE_HOST "echo 1" &>/dev/null || begin
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echo "Cannot ssh to $BACKUP_REMOTE_HOST"
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exit 6
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end
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ssh $BACKUP_REMOTE_HOST "test -d $BACKUP_REMOTE_DIR/$target" || begin
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echo "Remote directory $BACKUP_REMOTE_DIR/$target does not exist on $BACKUP_REMOTE_HOST (use --list-backup-files to show)"
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exit 5
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end
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# TODO: autocomplete?
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# TODO: checksum?
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# TODO: progress indicator?
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set local_dir (echo $target | awk -F. '{print $1}')
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mkdir $local_dir || begin
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echo "Local unbackup directory '$local_dir' exists"
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exit 2
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end
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pushd $local_dir >/dev/null
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ssh $BACKUP_REMOTE_HOST "cat $BACKUP_REMOTE_DIR/$target" |
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gpg --decrypt 2>/dev/null |
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zstd --ultra -T2 -22 -dc |
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tar -xf - || begin
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echo "Failed to stream backup"
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exit 4
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end
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popd >/dev/null
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echo "Restored to $local_dir"
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