9c839d789f
Most of them are missing quotes, `` -> $(), and -o/-a usage in conditions. Also add few directives disabling checks where were too verbose.
42 lines
1.4 KiB
Bash
Executable File
42 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
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echo Starting Restorecopy >&2
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read -r args
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read -r paths
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echo "Arguments: $args" >&2
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echo "Paths: $paths" >&2
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if [ -f "$args" ] ; then
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echo "Performing restore from backup file $args" >&2
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TARGET="$args"
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echo "Copying $TARGET to STDOUT" >&2
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# shellcheck disable=SC2086
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/usr/lib/qubes/tar2qfile "$TARGET" $paths
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else
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echo "Checking if arguments is matching a command" >&2
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COMMAND=$(echo "$args" | cut -d ' ' -f 1)
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if command -v "$COMMAND" >/dev/null; then
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tmpdir=$(mktemp -d)
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mkfifo "$tmpdir/backup-data"
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echo "Redirecting $args to STDOUT" >&2
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# Parsing args to handle quotes correctly
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# Dangerous method if args are uncontrolled
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eval "set -- $args"
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# Use named pipe to pass original stdin to tar2file
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"$@" > "$tmpdir/backup-data" < /dev/null &
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# shellcheck disable=SC2086
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/usr/lib/qubes/tar2qfile "$tmpdir/backup-data" $paths
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# Restoration may be terminated earlier because of selected files. This
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# will be seen as EPIPE to the retrieving process, which may cause retcode
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# other than 0 in some cases - which would be incorrectly treated as backup
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# restore error. So instead of that, use tar2qfile exit code (and have dom0
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# detect if anything wrong with actual data)
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retcode=$?
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wait -n
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rm "$tmpdir/backup-data"
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rmdir "$tmpdir"
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exit "$retcode"
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else
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echo "Invalid command $COMMAND" >&2
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exit 2
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fi
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fi
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