Re: Evince in C

["Nickolay V. Shmyrev" <nshmyrev yandex ru>]

В Втр, 15/07/2008 в 16:22 +0200, Michal Nowak пишет:
> Hi,
> 
> On Wed, 2008-07-09 at 21:51 -0400, Vijay Ganesh wrote:
> > Dear Evince Developers,
> > 
> > Thanks for writing and maintaining Evince.
> > 
> > I am currently researching and developing a (semi)-automated bug finding tool. I
> > would like to apply it to Evince. We have applied it to an open source Flash
> > movie player called Swfdec. So far we have found 6 interesting bugs, and
> > reported some of them back to its authors. We did this with about 1 man-month
> > effort.
> > 
> > However, my bug-finding tool has the limitation that it accepts only C programs.
> > From the Wikipedia entry on Evince, I understand that a small portion of Evince
> > in written in C++. I was wondering if there exists a purely C version of
> > Evince, or if a pure C-version is even possible given its library dependencies?
> > 
> > Is there any other pdf viewer (or document viewer) that is written purely in the
> > C language?
> 
> I am not a developer, just an list-observer, so I am afraid I am not
> providing answers asked us.
> 
> Few points:
> 
>      1. Could you point us to the mentioned tool?
>      2. I dunno what kind of bugs is your tool able to find but from my
>         POV most security problems in the past came from old xpdf code
>         and now from poppler lib. If you care in this area, probable
>         focus there.
>      3. How to get current Evince code is to be found here:
>         http://live.gnome.org/Evince/GettingEvince 
> 
> [root dhcp-lab-192 SPECS]# sloccount /tmp/evince-2.23.4/
> <...>
> SLOC	Directory	SLOC-by-Language (Sorted)
> 21679   backend         ansic=19672,cpp=2007
> 21312   shell           ansic=21312
> 9125    top_dir         sh=9125
> 5861    cut-n-paste     ansic=5861
> 5273    libdocument     ansic=5273
> 520     properties      ansic=520
> 156     thumbnailer     ansic=156
> 53      test            python=53
> 0       data            (none)
> 0       help            (none)
> 0       po              (none)
> 
> 
> Totals grouped by language (dominant language first):
> ansic:        52794 (82.52%)
> sh:            9125 (14.26%)
> cpp:           2007 (3.14%)
> python:          53 (0.08%)
> 
> (Generated using David A. Wheeler's 'SLOCCount'.)
> 
>  4. The best way how to find out you how your tool interacts with
>     Evince's code, actually, is to try it :).

Exactly, you can compile Evince with, say, PS backend only and this way
it will be pure ANSI C application. The core written in C, only some
backends are C++. So we are very interested testing Evince code with any
tool you have and will try to help to resolve the problems. 

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