config: fix wrong Peer endpoint string format

When a tunnel is running, saving the tunnel's config with an IPv6
address endpoint like [::1]:42 would result in the wrong format ::1:42.
This patch fixes it.

For endpoints with an IPv6 address(e.g. [::1]:42). Since the default
endpoint InetSocketAddress is created unresolved, getEndpointString()
returns "[::1]:42" (InetSocketAddress.getHostString() returns the
literal hostname). After the endpoint is resolved, getEndpointString()
returns "::1:42" (InetSocketAddress.getHostString() returns the IPv6
address without the square brackets). This inconsistent return values
caused the above mentioned bug.

With this patch, function getEndpointString would return the right
format string whether the endpoint is resolved or not.

Signed-off-by: Zhao Gang <gang.zhao.42@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Zhao Gang 2018-08-13 23:12:42 +08:00 committed by Jason A. Donenfeld
parent 09cf73cd3c
commit 61d4f17f5d

View File

@ -71,6 +71,9 @@ public class Peer {
private String getEndpointString() {
if (endpoint == null)
return null;
if (endpoint.getHostString().contains(":") && !endpoint.getHostString().contains("["))
return String.format("[%s]:%d", endpoint.getHostString(), endpoint.getPort());
else
return String.format("%s:%d", endpoint.getHostString(), endpoint.getPort());
}