Re: zenmap as root error

["Guilherme Polo" <ggpolo () gmail com>]

2008/4/1, João Medeiros <ignotus21 () gmail com>:
> You can just check if the DISPLAY environment variable is set. Like this:
>
>  ----------------------------------------8<----------------------------------------
>  import os
>  import sys
>
>  if 'DISPLAY' not in os.environ.keys():

just if 'DISPLAY' not in os.environ is fine

>     print "Unable to start graphical application. Please, set DISPLAY \
>  environment variable."
>     sys.exit(0)
>
>  import gtk
>  ----------------------------------------8<----------------------------------------
>
>  Put this before "import gtk" in zenmap main file to avoid some warnings too.
>
>  Att, João Medeiros.

But, for PyGtk 2.8 and earlier I would suggest doing this in a
different manner (and much simpler and less error-prone):

try:
    import gtk
except ImportError, e:
    print e

For PyGtk 2.10 and newer, ImportError is actually a warning so the
code changes a bit:

import warnings
warnings.filterwarnings('error', module='gtk')
try:
    import gtk
except Warning, w:
    print w
warnings.resetwarnings()

>  On Tue, Apr 1, 2008 at 4:21 PM, Fyodor <fyodor () insecure org> wrote:
>  > On Sun, Mar 23, 2008 at 11:47:56PM -0300, eldraco wrote:
>  >  > Hi Aaron,
>  >  >
>  >  > Hope this helps you. Perhaps you already think about this, but...
>  >  > Try to set the DISPLAY variable before.
>  >  >
>  >  > If I don't set it before, I have the same output:
>  >  >
>  >  > #zenmap
>  >  > Segmentation fault
>  >  >
>  >  > But after I set It, it works like a charm:
>  >
>  >  Hm, thanks for the report.  Zenmap should give a proper error in that
>  >  case, not segfault.  When I unset my display, I get a much more useful
>  >  exception:
>  >
>  >  RuntimeError: could not open display
>  >
>  >  If anyone else gets the segmentation fault result described above and
>  >  can find a fix, I'd be happy to integrate it.
>  >
>  >  Cheers,
>  >  -F
>  >
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>
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-- 
-- Guilherme H. Polo Goncalves

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