Integrate unfix.org's IPv6 patches up to level 10, with rather a lot

[u/mdw/putty] / windows / window.c

diff --git a/windows/window.c b/windows/window.c
index c80a25d..17aaf1a 100644 (file)
--- a/windows/window.c
+++ b/windows/window.c
@@ -542,9 +542,20 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
        }
 
        /*
-        * Trim a colon suffix off the hostname if it's there.
+        * Trim a colon suffix off the hostname if it's there. In
+        * order to protect IPv6 address literals against this
+        * treatment, we do not do this if there's _more_ than one
+        * colon.
         */
-       cfg.host[strcspn(cfg.host, ":")] = '\0';
+       {
+           char *c = strchr(cfg.host, ':');
+
+           if (c) {
+               char *d = strchr(c+1, ':');
+               if (!d)
+                   *c = '\0';
+           }
+       }
 
        /*
         * Remove any remaining whitespace from the hostname.