From: Guus Sliepen <guus@meshlink.io>
Date: Mon, 13 Jul 2020 20:40:06 +0000 (+0200)
Subject: Don't store empty canonical addresses.
X-Git-Url: http://git.meshlink.io/?p=meshlink;a=commitdiff_plain;h=0298c10effe496200dc761a4a26d57fc01ee2cf8

Don't store empty canonical addresses.

Use a NULL pointer instead of an empty string to signal the lack of a
canonical address.
---

diff --git a/src/net_setup.c b/src/net_setup.c
index a82d5d97..b289a765 100644
--- a/src/net_setup.c
+++ b/src/net_setup.c
@@ -93,6 +93,11 @@ bool node_read_public_key(meshlink_handle_t *mesh, node_t *n) {
 	// While we are at it, read known address information
 	if(!n->canonical_address) {
 		n->canonical_address = packmsg_get_str_dup(&in);
+
+		if(!*n->canonical_address) {
+			free(n->canonical_address);
+			n->canonical_address = NULL;
+		}
 	} else {
 		packmsg_skip_element(&in);
 	}
@@ -191,6 +196,12 @@ bool node_read_from_config(meshlink_handle_t *mesh, node_t *n, const config_t *c
 	}
 
 	n->canonical_address = packmsg_get_str_dup(&in);
+
+	if(!*n->canonical_address) {
+		free(n->canonical_address);
+		n->canonical_address = NULL;
+	}
+
 	uint32_t count = packmsg_get_array(&in);
 
 	for(uint32_t i = 0; i < count; i++) {