string error_msg(int what, string kind, string long) {
    string tmp = what + " " + kind;

    return html_page(tmp, long + "<P>");
}

string not_found(string uri) {
    return error_msg(404, "Not Found", "The requested URL '"+uri+"' was not found on this server.");
}

string not_implemented(string req) {
    return error_msg(500, "Not Implemented", "The request '" + req + "' is not supported by this server.");
}

void process_input(string str) {
    string uri;
    string response;

    if (sscanf(str, "GET %s", uri)) {
	sscanf(uri, "%s HTTP/1.0", uri);
	response = master()->process_request(uri);
	if (response) {
	    receive(response);
	} else {
	    receive(not_found(uri));
	}
    } else {
	receive(not_implemented(str));
	write_file("/log/request", "Request " + str + " unknown.\n");
    }
    destruct(this_object());
}