sanitize json_get_type function

Signed-off-by: Luka Perkov <luka@openwrt.org>

diff --git a/sh/jshn.sh b/sh/jshn.sh
index 70c3aa3..1c35711 100644 (file)
--- a/sh/jshn.sh
+++ b/sh/jshn.sh
@@ -197,7 +197,7 @@ json_get_type() {
        local cur
 
        _json_get_var cur JSON_CUR
-       local var="${JSON_PREFIX}TYPE_${cur}_$2"
+       local var="${JSON_PREFIX}TYPE_${cur}_${2//[^a-zA-Z0-9_]/_}"
        eval "export -- \"$dest=\${$var}\"; [ -n \"\${$var+x}\" ]"
 }