src: quote user-defined strings when used from rule selectors

The following selectors display strings using quotes:

* meta iifname
* meta oifname
* meta ibriport
* meta obriport

However, the following do not:

* meta oif
* meta iif
* meta skuid
* meta skgid
* meta iifgroup
* meta oifgroup
* meta rtclassid
* ct label

Given they refer to user-defined values, neither keywords nor internal
built-in known values, let's quote the output of this.

This patch modifies symbolic_constant_print() so we can signal this to
indicate if the string needs to be quoted.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 8 insertions, 8 deletions

diff --git a/tests/py/ip/ip.t b/tests/py/ip/ip.t
index 8fa53be4..8ed2e99c 100644
--- a/tests/py/ip/ip.t
+++ b/tests/py/ip/ip.t
@@ -123,11 +123,11 @@ ip hdrlength 15;ok
 ip hdrlength 16;fail
 
 # limit impact to lo
-iif lo ip daddr set 127.0.0.1;ok
-iif lo ip checksum set 0;ok
-iif lo ip id set 0;ok
-iif lo ip ecn set 1;ok;iif lo ip ecn set ect1
-iif lo ip ecn set ce;ok
-
-iif lo ip dscp set af23;ok
-iif lo ip dscp set cs0;ok
+iif "lo" ip daddr set 127.0.0.1;ok
+iif "lo" ip checksum set 0;ok
+iif "lo" ip id set 0;ok
+iif "lo" ip ecn set 1;ok;iif "lo" ip ecn set ect1
+iif "lo" ip ecn set ce;ok
+
+iif "lo" ip dscp set af23;ok
+iif "lo" ip dscp set cs0;ok