+_DATA="$(dirname "$call")" #storage directory
+
+debug "Execution dir: $_EXEC"
+debug "Storage dir: $_DATA"
+
+[ -w "$_DATA" ] && [ -d "$_DATA" ] || die "storage directory must be writable"
+
+# create directories for object storage
+for each in "$_DATA"/{vcard,mappings,courses,cache,temp}; do
+ [ ! -e "$each" ] && mkdir "$each"
+ [ -w "$each" ] && [ -d "$each" ] || die "storage $each must be a writable directory"
+done
+
+# create htaccess file
+[ -f .htaccess ] || cat >.htaccess <<EOF
+Options +ExecCGI
+AddHandler cgi-script .cgi
+DirectoryIndex index.cgi
+EOF
+[ -f .htaccess ] || die "no htaccess file present and unable to create one"
+
+. "$_EXEC/cgi.sh"