views.py

    else:
        data = {
                "restrict_to_same_tag": session.access_rules_tag is not None,
                "credit_percent": grading_rule.credit_percent,
                #"due_same_as_access_expiration": True,
                "due": grading_rule.due,
                }
        for perm in access_rule.permissions:
            data[perm] = True

        form = ExceptionStage3Form(data, flow_desc, session.access_rules_tag)

    return render_course_page(pctx, "course/generic-course-form.html", {
        "form": form,
        "form_description": ugettext("Grant Exception"),
        "form_text": string_concat(
            "<div class='well'>",
            ugettext("Granting exception to '%(participation)s' "
            "for '%(flow_id)s' (session %(session)s)."),
            "</div>")
        % {
            'participation': participation,
            'flow_id': flow_id,
            'session': strify_session_for_exception(session)},
    })

# }}}


# {{{ ssh keypair

@login_required
def generate_ssh_keypair(request):
    if not request.user.is_staff:
        raise PermissionDenied(_("only staff may use this tool"))

    from paramiko import RSAKey
    key_class = RSAKey
    prv = key_class.generate(bits=2048)

    import six
    prv_bio = six.BytesIO()
    prv.write_private_key(prv_bio)

    prv_bio_read = six.BytesIO(prv_bio.getvalue())

    pub = key_class.from_private_key(prv_bio_read)

    pub_bio = six.BytesIO()
    pub_bio.write("%s %s relate-course-key" % (pub.get_name(), pub.get_base64()))

    return render(request, "course/keypair.html", {
        "public_key": prv_bio.getvalue().decode(),
        "private_key": pub_bio.getvalue().decode(),
        })

# }}}


# vim: foldmethod=marker