Add a vdn-rsync command

bin/vdn-rsync

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+set -eu
+
+VDN_PATH=$(readlink -f $(dirname $(command -v vdn))/..)
+. $VDN_PATH/bin/functions.sh
+GUEST_OWNER=$USER
+
+rewrite_connection() {
+  if [[ $1 != *:* ]]; then
+    connection="$1"
+  else
+    connection=${1%:*}
+    local path=${1#*:}
+    local user=${connection%@*}
+    guest=${connection#*@}
+    connection="${user}@localhost:${path}"
+  fi
+}
+
+determine_redir_port() {
+  local redirs="$TMPDIR/vdn-$guest-${GUEST_OWNER}-redirs"
+  [[ ! -e $redirs ]] && error "Impossible de joindre $guest"
+  sshRedirPort=$(awk -F ':' '$1 == "tcp" && $3 == "22" {print $2}' "$redirs")
+  [[ -n $sshRedirPort ]] || error "Aucune redirection vers le port 22 du système $guest"
+}
+
+declare -a options=()
+declare -a srcs=()
+dest=''
+guest=''
+while [[ $# -ne 0 ]]; do
+  if [[ $1 == -* ]]; then
+    options+=("$1")
+  elif [[ $# -ne 1 ]]; then
+    rewrite_connection "$1"
+    options+=("$connection")
+  else
+    rewrite_connection "$1"
+    dest="$connection"
+  fi
+  shift
+done
+
+if [[ $guest ]]; then
+  determine_redir_port
+else
+  error 'Utiliser rsync directement'
+fi
+rsync "${options[@]}" -e "ssh -g -p $sshRedirPort" "${srcs[@]}" "$dest"