[lmi-commits] [lmi] master f43365e 2/3: Explicitly hardcode path to local wxxrc schema

[Greg Chicares]

branch: master
commit f43365e3c697fbf7ea0ebcdfcbb39fb5808d6208
Author: Gregory W. Chicares <address@hidden>
Commit: Gregory W. Chicares <address@hidden>

    Explicitly hardcode path to local wxxrc schema
    
    Formerly, 'xrc.rnc' read the latest schema from wxwidgets.org each time
    it was invoked. That contradicted the principle that lmi tools should
    work correctly even without internet access, provided only that copies
    of all online resources have been cached. It did ensure that the latest
    version of the schema would always be used, but that is not necessarily
    a benefit: the latest online version could be incompatible with lmi's
    XRC files, either deliberately, or due to an upstream mistake.
    
    Now, the schema in the current local working copy of wx is used instead.
    It is guaranteed to be the version intended for use with the wx version
    actually used to build lmi. Any enhancements introduced subsequently are
    ignored, but so are any upstream errors or incompatibilities.
    
    Alternatively, an xml catalog could have been used to cache the schema.
    That would require installing a URI resolver that is not already present
    in the deliberately minimal chroot or cygwin system used for production
    builds. Installing a resolver would add a point of failure and enlarge
    the attack surface: too much extra baggage for a single small file that
    is already available locally and rarely changes.
---
 xrc.rnc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xrc.rnc b/xrc.rnc
index 18de2f7..65ff89b 100644
--- a/xrc.rnc
+++ b/xrc.rnc
@@ -25,7 +25,7 @@
 default namespace     = "http://www.wxwidgets.org/wxxrc";
         namespace xrc = "http://www.wxwidgets.org/wxxrc";
 
-include "http://www.wxwidgets.org/wxxrc";
+include "/opt/lmi/vcs/wxWidgets/misc/schema/xrc_schema.rnc"
     {
     customClasses = InputSequenceEntry | RoundingButtons
     }