From 8d343cfd3a12d910d6a663f2d5f2cd4a41d88ce2 Mon Sep 17 00:00:00 2001 From: aarzilli Date: Mon, 21 Mar 2016 18:50:49 +0100 Subject: [PATCH] Handle wildcard values in Xauthority file Some field values in the Xauthority file have special meanings: - a value of 65535 in the 'family' field means that the entry will match a connection of any family on any address - an empty string in the 'display number' field means that the entry will match a connection on any display number This behaviour is documented at: https://cgit.freedesktop.org/xorg/lib/libXau/tree/AuGetBest.c#n109 --- nexgb/auth.go | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/nexgb/auth.go b/nexgb/auth.go index a6fad90..62a9b35 100644 --- a/nexgb/auth.go +++ b/nexgb/auth.go @@ -25,6 +25,7 @@ func readAuthority(hostname, display string) ( // As per /usr/include/X11/Xauth.h. const familyLocal = 256 + const familyWild = 65535 if len(hostname) == 0 || hostname == "localhost" { hostname, err = os.Hostname() @@ -75,7 +76,10 @@ func readAuthority(hostname, display string) ( return "", nil, err } - if family == familyLocal && addr == hostname && disp == display { + addrmatch := (family == familyWild) || (family == familyLocal && addr == hostname) + dispmatch := (disp == "") || (disp == display) + + if addrmatch && dispmatch { return name0, data0, nil } }