Programming beyond print in python is completely beyond me :)
It looks like maybe there is something unexpected in the .cocci file.
Perhaps you want what I call command line Coccinelle in the new
(1.0.0-rc5) release? Now you can say:
spatch -sp "E->Fld" file
to find all of the structure field dereferences in file, or more
interestingly:
spatch -sp "e:struct foo *:->Fld" file
to find only those where the structure has type struct foo *. By default,
anything that begins with a capital letter is a metavariable. You can
also declare a metavariable by concatenating the variable name with ::,
with the type of the metavariable between the colons.
You can also use ..., and when, but the argument to when has to be a
single token (eg an identifier name or a metavariable).
julia
On Fri, 12 Aug 2011, Eric Leblond wrote:
> Hello,
>
> I'm currently trying to code a semantic grep using coccinelle (By the
> way, if there is one tell me;). I did not find better than making a
> python script calling spatch...
>
> If the grep code like is easy to build with coccinelle, I've got some
> difficulty to call coccinelle with python using for example "call"
> function of the subprocess module:
>
> # launch spatch
> cmd = ["spatch", "-sp_file", tmp_cocci_file.name, file_name]
> print "running: %s." % " ".join(cmd)
>
> output = call(cmd)
>
> Running the script does:
> eric@tiger:~/git/coccigrep (master) $ python ./coccigrep.py
> running: spatch -sp_file /tmp/tmpoiump0.cocci
> /home/eric/git/oisf/src/detect-noalert.c.
> init_defs_builtins: /usr/share/coccinelle/standard.h
> Fatal error: exception Failure("unexpected code before the first rule
> ")
> 2
>
>
> Running the command is ok:
>
> eric@tiger:~/git/coccigrep (master) $ spatch
> -sp_file /tmp/tmpoiump0.cocci /home/eric/git/oisf/src/detect-noalert.c
> init_defs_builtins: /usr/share/coccinelle/standard.h
> HANDLING: /home/eric/git/oisf/src/detect-noalert.c
> /home/eric/git/oisf/src/detect-noalert.c:49:
> SCLogError(SC_ERR_INVALID_VALUE, "nocase has no value");
> return -1;
> }
>
> s->flags |= SIG_FLAG_NOALERT;
> return 0;
> }
>
> If I use Popen without argument, everything is fine.
>
> Any idea ?
>
> BR,
> --
> Eric Leblond
> Blog: http://home.regit.org/
>
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