def extract_bower_zipfile(self, zip_file, dest, expected_version=None):
        bower_json = None
        root = None
        deps_installed = []
        for info in zip_file.infolist():
            if PurePath(info.filename).name == "bower.json":
                with zip_file.open(info) as f:
                    bower_json = json.load(f)
                    root = str(PurePath(info.filename).parent)
                break
        version = bower_json["version"]
        if expected_version is not None:
            expected_version = Bower.clean_semver(expected_version)
            if not semver.match(version, expected_version):
                click.secho("error: versions do not match ({} =/= {})".format(
                    version, expected_version))
                raise InvalidPackageError
        if "dependencies" in bower_json:
            for package, version in bower_json["dependencies"].items():
                url = Bower.get_package_url(package)
                deps_installed.extend(self.get_bower_package(
                    url, dest=dest, version=version))
        ignore_patterns = [GitIgnorePattern(ig) for ig in bower_json["ignore"]]
        path_spec = PathSpec(ignore_patterns)
        namelist = [path for path in zip_file.namelist()
                    if PurePath(path).parts[0] == root]
        ignored = list(path_spec.match_files(namelist))
        for path in namelist:
            dest_path = PurePath(
                bower_json["name"],
                *PurePath(path).parts[1:])

            if path in ignored:
                continue

            for path in ignored:
                for parent in PurePath(path):
                    if parent in ignored:
                        continue

            if path.endswith("/"):
                if list(path_spec.match_files([str(dest_path)])):
                    ignored.append(PurePath(path))
                elif not (dest / dest_path).is_dir():
                    (dest / dest_path).mkdir(parents=True)
            else:
                target_path = dest / dest_path.parent / dest_path.name
                source = zip_file.open(path)
                target = target_path.open("wb")
                with source, target:
                    shutil.copyfileobj(source, target)
        deps_installed.append((bower_json["name"], bower_json["version"]))
        return deps_installed
def create_request(self, copy_id_photo_from=None):
        """
        Construct the HTTP request to the photo verification service.

        Keyword Arguments:
            copy_id_photo_from (SoftwareSecurePhotoVerification): If provided, re-send the ID photo
                data from this attempt.  This is used for reverification, in which new face photos
                are sent with previously-submitted ID photos.

        Returns:
            tuple of (header, body), where both `header` and `body` are dictionaries.

        """
        access_key = settings.VERIFY_STUDENT["SOFTWARE_SECURE"]["API_ACCESS_KEY"]
        secret_key = settings.VERIFY_STUDENT["SOFTWARE_SECURE"]["API_SECRET_KEY"]

        scheme = "https" if settings.HTTPS == "on" else "http"
        callback_url = "{}://{}{}".format(
            scheme, settings.SITE_NAME, reverse('verify_student_results_callback')
        )

        # If we're copying the photo ID image from a previous verification attempt,
        # then we need to send the old image data with the correct image key.
        photo_id_url = (
            self.image_url("photo_id")
            if copy_id_photo_from is None
            else self.image_url("photo_id", override_receipt_id=copy_id_photo_from.receipt_id)
        )

        photo_id_key = (
            self.photo_id_key
            if copy_id_photo_from is None else
            copy_id_photo_from.photo_id_key
        )

        body = {
            "EdX-ID": str(self.receipt_id),
            "ExpectedName": self.name,
            "PhotoID": photo_id_url,
            "PhotoIDKey": photo_id_key,
            "SendResponseTo": callback_url,
            "UserPhoto": self.image_url("face"),
            "UserPhotoKey": self._encrypted_user_photo_key_str(),
        }
        headers = {
            "Content-Type": "application/json",
            "Date": formatdate(timeval=None, localtime=False, usegmt=True)
        }
        _message, _sig, authorization = generate_signed_message(
            "POST", headers, body, access_key, secret_key
        )
        headers['Authorization'] = authorization

        return headers, body