Move ssh functionality to plugin.

This commit is contained in:
redxef 2023-06-07 22:24:44 +02:00
parent f07741a8d5
commit 58923c867f
Signed by: redxef
GPG key ID: 7DAC3AA211CBD921
4 changed files with 74 additions and 54 deletions

View file

@ -7,6 +7,7 @@ XDG_DATA_DIRS="${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
TARBACK_REMOTE_DEFAULT=
TARBACK_TRANSFORM_REMOTE_COMMAND_DEFAULT=
TARBACK_TRANSFORM_REMOTE_ARGUMENT_COMMAND_DEFAULT=
# shellcheck disable=SC2016 # disable variable not expanding hint
TARBACK_TAR_CREATE_COMMAND_DEFAULT='tar c -C "$1" .'
# shellcheck disable=SC2016 # disable variable not expanding hint
@ -26,6 +27,7 @@ TARBACK_REMOTE="${TARBACK_REMOTE:-$TARBACK_REMOTE_DEFAULT}"
# maybe the command needs to be transformed before being passed to the
# remote command, see _transform_ssh_command for an example
TARBACK_TRANSFORM_REMOTE_COMMAND="${TARBACK_TRANSFORM_REMOTE_COMMAND:-$TARBACK_TRANSFORM_REMOTE_COMMAND_DEFAULT}"
TARBACK_TRANSFORM_REMOTE_ARGUMENT_COMMAND="${TARBACK_TRANSFORM_REMOTE_ARGUMENT_COMMAND:-$TARBACK_TRANSFORM_REMOTE_ARGUMENT_COMMAND_DEFAULT}"
TARBACK_TAR_CREATE_COMMAND="${TARBACK_TAR_CREATE_COMMAND:-$TARBACK_TAR_CREATE_COMMAND_DEFAULT}"
TARBACK_TAR_CREATE_COMMAND_FILE="${TARBACK_TAR_CREATE_COMMAND_FILE:-$TARBACK_TAR_CREATE_COMMAND_FILE_DEFAULT}"
TARBACK_TAR_EXTRACT_COMMAND="${TARBACK_TAR_EXTRACT_COMMAND:-$TARBACK_TAR_EXTRACT_COMMAND_DEFAULT}"
@ -45,40 +47,19 @@ _transform_split_name() {
fi
}
_transform_ssh_command() {
command_name="$(echo "$TARBACK_REMOTE" | awk '{print $1}')"
if echo "$command_name" | grep -q 'ssh'; then
echo "'$1'"
else
echo "$1"
fi
}
_transform_remote() {
r="$1"
# TODO add more transformers
for t in _transform_ssh_command "$TARBACK_TRANSFORM_REMOTE_COMMAND"; do
[ -z "$t" ] && continue # skip empty transformers
r="$("$t" "$r")"
done
echo "$r"
}
_transform_argument_ssh() {
command_name="$(echo "$TARBACK_REMOTE" | awk '{print $1}')"
if echo "$command_name" | grep -q 'ssh'; then
echo "'$(printf '%s' "$1" | sed "s/'/'\\\\''/g")'"
else
echo "$1"
if [ -n "$TARBACK_TRANSFORM_REMOTE_COMMAND" ]; then
r="$("$TARBACK_TRANSFORM_REMOTE_COMMAND" "$r")"
fi
echo "$r"
}
_transform_argument() {
a="$1"
for t in _transform_argument_ssh; do
[ -z "$t" ] && continue # skip empty transformers
a="$("$t" "$a")"
done
if [ -n "$TARBACK_TRANSFORM_REMOTE_ARGUMENT_COMMAND" ]; then
a="$("$TARBACK_TRANSFORM_REMOTE_ARGUMENT_COMMAND" "$a")"
fi
echo "$a"
}
@ -93,7 +74,7 @@ _create() {
tarback_tar_create_command="$TARBACK_TAR_CREATE_COMMAND_FILE"
fi
tarback_tar_create_command="$(_transform_remote "$tarback_tar_create_command")"
$TARBACK_REMOTE sh -c "$tarback_tar_create_command" - "$(_transform_argument_ssh "$src")" \
$TARBACK_REMOTE sh -c "$tarback_tar_create_command" - "$(_transform_argument "$src")" \
| $TARBACK_COMPRESSION \
| $TARBACK_SPLIT "$dst"
}
@ -113,7 +94,7 @@ _restore() {
tarback_tar_extract_command="$(_transform_remote "$tarback_tar_extract_command")"
$TARBACK_MERGE "$src"* \
| $TARBACK_COMPRESSION --decompress --stdout \
| $TARBACK_REMOTE sh -c "$tarback_tar_extract_command" - "$(_transform_argument_ssh "$dst")"
| $TARBACK_REMOTE sh -c "$tarback_tar_extract_command" - "$(_transform_argument "$dst")"
}
restore() {
@ -124,25 +105,27 @@ short_options='p:'
while getopts "$short_options" arg; do
case "$arg" in
p)
# source plugin file
for p in $(echo "$OPTARG" | tr ',' ' '); do
# source plugin file(s)
sourced=false
for loc in $TARBACK_PLUGIN_SEARCH_PATH; do
if [ -e "$loc/tarback/$OPTARG.sh" ]; then
if [ -e "$loc/tarback/$p.sh" ]; then
# shellcheck disable=SC1090 # disable cannot follow source
. "$loc/tarback/$OPTARG.sh"
. "$loc/tarback/$p.sh"
sourced=true
break
fi
done
if ! "$sourced"; then
echo "couldn't find plugin $OPTARG" >&2
echo "couldn't find plugin $p" >&2
exit 1
fi
done
shift 2
;;
*)
echo "unknown option $1" >&2
exit 1
#exit 1
;;
esac
done

37
tarback/ssh.sh Normal file
View file

@ -0,0 +1,37 @@
#!/bin/sh
_tarback_plugin_ssh_transform_ssh_command() {
command_name="$(echo "$TARBACK_REMOTE" | awk '{print $1}')"
if echo "$command_name" | grep -q 'ssh'; then
echo "'$1'"
else
echo "$1"
fi
}
_tarback_plugin_ssh_transform_ssh_argument() {
command_name="$(echo "$TARBACK_REMOTE" | awk '{print $1}')"
if echo "$command_name" | grep -q 'ssh'; then
echo "'$(printf '%s' "$1" | sed "s/'/'\\\\''/g")'"
else
echo "$1"
fi
}
short_options='p:s:'
while getopts "$short_options" arg; do
case "$arg" in
s)
TARBACK_REMOTE="$OPTARG"
shift 2
;;
*)
echo "unknown option $1" >&2
#exit 1
;;
esac
done
TARBACK_TRANSFORM_REMOTE_COMMAND=_tarback_plugin_ssh_transform_ssh_command
TARBACK_TRANSFORM_REMOTE_ARGUMENT_COMMAND=_tarback_plugin_ssh_transform_ssh_argument

View file

@ -8,24 +8,24 @@ export TARBACK_REMOTE='ssh localhost'
# archive whole directory
workdir="$(create_directories)"
./tarback.sh create "$workdir/source" "$workdir/dest/source.tar.xz"
./tarback.sh restore "$workdir/dest/source.tar.xz" "$workdir/restore"
./tarback.sh -p ssh create "$workdir/source" "$workdir/dest/source.tar.xz"
./tarback.sh -p ssh restore "$workdir/dest/source.tar.xz" "$workdir/restore"
diff "$workdir/source" "$workdir/restore"
rm -rf "$workdir"
# archive single file
workdir="$(create_directories)"
filename="$(basename "$(find "$workdir/source" -type f)")"
./tarback.sh create "$workdir/source/$filename" "$workdir/dest/source.tar.xz"
./tarback.sh restore "$workdir/dest/source.tar.xz" "$workdir/restore/$filename"
./tarback.sh -p ssh create "$workdir/source/$filename" "$workdir/dest/source.tar.xz"
./tarback.sh -p ssh restore "$workdir/dest/source.tar.xz" "$workdir/restore/$filename"
diff "$workdir/source" "$workdir/restore"
rm -rf "$workdir"
# split archive
workdir="$(create_directories)"
filename="$(basename "$(find "$workdir/source" -type f)")"
TARBACK_SPLIT="split -b 10 -" ./tarback.sh create "$workdir/source/$filename" "$workdir/dest/source.tar.xz"
TARBACK_SPLIT="split -b 10 -" ./tarback.sh restore "$workdir/dest/source.tar.xz" "$workdir/restore/$filename"
TARBACK_SPLIT="split -b 10 -" ./tarback.sh -p ssh create "$workdir/source/$filename" "$workdir/dest/source.tar.xz"
TARBACK_SPLIT="split -b 10 -" ./tarback.sh -p ssh restore "$workdir/dest/source.tar.xz" "$workdir/restore/$filename"
diff "$workdir/source" "$workdir/restore"
[ "$(ls -1 "$workdir/dest/"*.part* | wc -l)" -gt 1 ]
rm -rf "$workdir"

View file

@ -8,24 +8,24 @@ export TARBACK_REMOTE='ssh localhost'
# archive whole directory
workdir="$(create_directories)"
./tarback.sh -p docker create "$workdir/source" "$workdir/dest/source.tar.xz"
./tarback.sh -p docker restore "$workdir/dest/source.tar.xz" "$workdir/restore"
./tarback.sh -p ssh,docker create "$workdir/source" "$workdir/dest/source.tar.xz"
./tarback.sh -p ssh,docker restore "$workdir/dest/source.tar.xz" "$workdir/restore"
diff "$workdir/source" "$workdir/restore"
rm -rf "$workdir"
# archive single file
workdir="$(create_directories)"
filename="$(basename "$(find "$workdir/source" -type f)")"
./tarback.sh -p docker create "$workdir/source/$filename" "$workdir/dest/source.tar.xz"
./tarback.sh -p docker restore "$workdir/dest/source.tar.xz" "$workdir/restore/$filename"
./tarback.sh -p ssh,docker create "$workdir/source/$filename" "$workdir/dest/source.tar.xz"
./tarback.sh -p ssh,docker restore "$workdir/dest/source.tar.xz" "$workdir/restore/$filename"
diff "$workdir/source" "$workdir/restore"
rm -rf "$workdir"
# split archive
workdir="$(create_directories)"
filename="$(basename "$(find "$workdir/source" -type f)")"
TARBACK_SPLIT="split -b 10 -" ./tarback.sh -p docker create "$workdir/source/$filename" "$workdir/dest/source.tar.xz"
TARBACK_SPLIT="split -b 10 -" ./tarback.sh -p docker restore "$workdir/dest/source.tar.xz" "$workdir/restore/$filename"
TARBACK_SPLIT="split -b 10 -" ./tarback.sh -p ssh,docker create "$workdir/source/$filename" "$workdir/dest/source.tar.xz"
TARBACK_SPLIT="split -b 10 -" ./tarback.sh -p ssh,docker restore "$workdir/dest/source.tar.xz" "$workdir/restore/$filename"
diff "$workdir/source" "$workdir/restore"
[ "$(ls -1 "$workdir/dest/"*.part* | wc -l)" -gt 1 ]
rm -rf "$workdir"