msOGRLayerGetAutoStyle passes NULL pointer to GetRGBFromString causing access violation

[szekerest]

msOGRLayerGetAutoStyle may pass NULL pointer to GetRGBFromString causing access
violation.

In my test case the brush style in the OGR MapInfo tab file contains ForeColor
but does not contain BackColor style. In this case
poBrushStyle->BackColor(bIsNull) returns NULL and bIsNull = true;

To fix the problem the following code fragment is used:

pszColor = poBrushStyle->BackColor(bIsNull);
                  if (!bIsNull &&        
poBrushStyle->GetRGBFromString(pszColor,r,g,b,t))
    {
        MS_INIT_COLOR(c->styles[0].backgroundcolor, r, g, b);
    }

[dmorissette]

Tamas, were you waiting on something before applying this in CVS?

[szekerest]

I'm sure I have already fixed this problem for the CVS HEAD. 

"Revision 1.103  2006/10/22 17:48:24  tamas
Changed OGRLayerGetAutoStyle not to pass NULL pointer to GetRGBFromString
causing access violation."


However it have not been backported to 4.10 yet.

Tamas

[szekerest]

Committed the fix for branch-4-10

 

[dmorissette]

I believe we can mark this bug FIXED then?

[dmorissette]

Note that the fix will be released in MapServer 4.10.2 (and 5.0).

The following GDAL bug is related to this issue as well: ​http://trac.osgeo.org/gdal/ticket/1571