Making a CGI request to a program (fossil-scm) from Rack (Sinatra)

[Guillermo Estrada <phrozen10@gmail.com>]

Hi, I just hope this is the place where I'll find the answer.

Fossil-Scm is a Source Code Management System that has a built in web
server for tracking issues and a wiki and such. It supports CGI also
to avoid running long term processes while hosting multiple repos. The
documentation suggests creating a simple CGI script like this one for
each repo you would like to host:

#!/usr/bin/fossil
repository: /route/to/repo/name.fossil

And this is all fine and works wonders in my web hosting.

What I want to do is to create a Sinatra (Rack) app to manage those
repositories, user authentication, common operations, create, delete,
etc... But in order to do that, I want to be able to manipulate the
route and the output of those webpages called via CGI.

Is there a way to take a request from my Rack application, take some
parameters, send them to the program (fossil) as a CGI request (This I
don't know how) and then get the output html to analyze/modify/etc...
and then sending the response from my Rack app?

Any help would be GREATLY appreciated.