Re: [DynInst_API:] Binary extension with raw bytes using PatchAPI

[Sergej Proskurin <prosig@xxxxxxx>]

> Bill suggested this project to me.
> http://sourceforge.net/p/crafthpc/code/
Great, thank you very much for this - I will definitely take a look at 
it :)
@Josh: Thank you very much for the hint regarding the private inherited 
classes: My mistake!
Best regards,
Sergej


On Thu, Apr 10, 2014 at 2:09 AM, Sergej Proskurin <prosig@xxxxxxx> wrote:
> > Hello,
> >
> > After first experimentations with the DynsinstAPI, I would like to use
> > PatchAPI in order to develop a fine-grained binary editing solution.
> > Unfortunately, at the moment, I have troubles with the extension of the
> > Snippet class:
> >
> > For the beginning, I would like to simply include some raw bytes into an
> > existing binary to be edited. I have followed the recently posted issue
> > concerning the same topic
> > (https://www-auth.cs.wisc.edu/lists/dyninst-api/2014/msg00061.shtml) and
> > wondered whether you could provide me with some existing binary modification
> > examples, as well. As can be seen in the code below, my current
> > test-implementation is based on the above mentioned issue, which is as well
> > provided by the PatchAPI documentation - in more or less same detail.
> >
> > The following code produces errors during compilation at the point when the
> > snippet-pointer is created.
> > Error message: "static Dyninst::PatchAPI::Snippet::Ptr
> > Dyninst::PatchAPI::Snippet::create(Dyninst::PatchAPI::Snippet*)â is
> > inaccessible within this context"
> >
> > ---
> >
> > class MySnippet : Snippet {
> > public:
> >      virtual bool generate(Point *point, Buffer &buf) {
> >          buf.copy((void*)"BBBBBBBBBBBBBBBBBBBB", 20);
> >
> >          return true;
> >      }
> > };
> >
> > ...
> >
> > /* The folowing line leads to errors during compilation */
> > MySnippet::Ptr snippet = MySnippet::create(new MySnippet());
> >
> > Point *point = mgr->findPoint(Location::Instruction(b, b->last()),
> > Point::BlockExit);
> >
> > Patcher patcher(mgr);
> > patcher.add(PushBackCommand::create(point, snippet));
> > patcher.commit();
> >
> > ---
> >
> > I would really appreciate it if you could help me with my concern.
> > Thank you very much in advance.
> >
> > Best regards,
> > Sergej
> >
> > PS: I am using the DynsinstAPI bundle version 8.1.2 (including ParseAPI,
> > PatchAPI, ...).
> >
> >
> >
> >
> > _______________________________________________
> > Dyninst-api mailing list
> > Dyninst-api@xxxxxxxxxxx
> > https://lists.cs.wisc.edu/mailman/listinfo/dyninst-api

--
Sometimes the problem is to discover what the problem is.

[Gordon Glegg, The Design of Design]