Am 02.03.2011 20:27, schrieb nap: > So to to the trick for the main satellites, but how modules like the > broker ones will have to do? After the "daemonization", they will be > in the current directory /var/lib/shinken or something similar. If we > do not set the sys.path, they won't be able to load the shinken lib > isn't it? The trick is: After importing the shinken main module by using the imp-"hack", the sub-modules and -packages are imported without problem, too. The current directory does no longer matter, since the sub-modules are search relative to the shinken main-module.
It does not matter whether the module is daemonized or not or whether it changes the working directory after `import shinken.`. > I think the sys.path is not a so bad thing. After this, we know that > we can import shinken.whatwewant from every place of the daemon and it > do not change if we do a direct launch or a daemon one. It's like a > sort "cleaning" of path before starting. IMHO the drawback is: Not only shinken is imported from the "new" directory, but every module is searched there. This may open options for attackers. (This is why twisted only adds the current dir if not running as root.) But let's step back and rethink, why we would need some "hack" at all: We need it for importing shinken if a) running from a non-installed checkout (if "." is not in PYTHONPATH, which is the default) b) not for running on Windows (if installed using setup.py) c) not for running on *ix (if installed using setup.py) d) not for running on *ix (if installed via apt, rpm, etc.) Do we need sys.path for accessing libexec or anything else? Do we need it for importing something else? Did I miss something? > If we comment it quite good, it's not a howful hack after all, and > it's quite even clear what we do (just set in the path so we can just > import shinken/ after all), we should add such a comment for imp too > after all. ACK for comments. -- Schönen Gruß - Regards Hartmut Goebel Dipl.-Informatiker (univ.), CISSP, CSSLP Goebel Consult Spezialist für IT-Sicherheit in komplexen Umgebungen http://www.goebel-consult.de Monatliche Kolumne: http://www.cissp-gefluester.de/ Goebel Consult mit Mitglied bei http://www.7-it.de
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