From: Alan T. DeKok <aland@freeradius.org>
Date: Fri, 18 Dec 2020 21:59:55 +0000 (-0500)
Subject: if there's no input, we don't need to convert it to hex
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f480763ab4d0bcb0d685d6e156369cc355c28165;p=thirdparty%2Ffreeradius-server.git

if there's no input, we don't need to convert it to hex
---

diff --git a/src/lib/unlang/xlat_builtin.c b/src/lib/unlang/xlat_builtin.c
index 91cef2f20f7..b79cde3c5f1 100644
--- a/src/lib/unlang/xlat_builtin.c
+++ b/src/lib/unlang/xlat_builtin.c
@@ -1874,7 +1874,9 @@ static xlat_action_t xlat_func_hex(TALLOC_CTX *ctx, fr_cursor_t *out,
 	MEM(vb = fr_value_box_alloc(ctx, FR_TYPE_STRING, NULL, false));
 	vb->vb_length = ((*in)->vb_length * 2);
 	vb->vb_strvalue = p = talloc_zero_array(vb, char, vb->vb_length + 1);
-	fr_bin2hex(&FR_SBUFF_OUT(p, talloc_array_length(p)), &FR_DBUFF_TMP((*in)->vb_octets, (*in)->vb_length), SIZE_MAX);
+	if ((*in)->vb_length) {
+		fr_bin2hex(&FR_SBUFF_OUT(p, talloc_array_length(p)), &FR_DBUFF_TMP((*in)->vb_octets, (*in)->vb_length), SIZE_MAX);
+	}
 
 	fr_cursor_append(out, vb);