utils.py 文件源码

def pull(directory):
    """
    Pulls latest changes with the user rights that owns the folder
    """
    try:
        st = os.stat(directory)
        logger.info("Pulling as {0}:{1}...".format(st.st_uid, st.st_gid))

        # order is important: after seteuid() call the effective UID isn't 0 anymore, so seteuid() will not be allowed
        os.setegid(st.st_uid)
        os.seteuid(st.st_gid)

        repo = git.Repo(directory)
        info = repo.remotes.origin.pull()[0]

        if info.flags & info.ERROR:
            logger.error("Pull failed: {0}".format(info.note))
            return False
        elif info.flags & info.REJECTED:
            logger.error("Could not merge after pull: {0}".format(info.note))
            return False
        elif info.flags & info.HEAD_UPTODATE:
            logger.info("Head is already up to date")
    except PermissionError:
        logger.error("Insufficient permissions to set uid/gid")
        return False
    finally:
        logger.info("Restoring root permissions")
        os.setegid(0)
        os.seteuid(0)

    return True