[PATCH 2/2] fwd_rule: Allow parsing * as a forwarding address

[David Gibson <david@gibson.dropbear.id.au>]

In our output in various places, we use "*", or sometimes "[*]" to indicate
a dual stack unspecified address: that is a case where we listen on both
0.0.0.0 and ::.  However we don't currently allow the same syntax when
specifying forwarding rules on the command line.

A * address can be indirectly specified by omitting the address entirely,
but for consistency allow an explicit "*" or "[*]" as well.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 fwd_rule.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fwd_rule.c b/fwd_rule.c
index cb37a990..04a0101d 100644
--- a/fwd_rule.c
+++ b/fwd_rule.c
@@ -709,7 +709,9 @@ void fwd_rule_parse(char optname, bool del, const char *optarg,
 				p++;
 			}
 
-			if (!inany_pton(p, &addr_buf))
+			if (strcmp(p, "*") == 0)
+				addr = NULL;
+			else if (!inany_pton(p, &addr_buf))
 				die("Bad forwarding address '%s'", p);
 		}
 	} else {
-- 
2.54.0