INNER CODE UNIT · Python

charset

Mailu/Mailu · setup/server.py:35

    charset = string.ascii_uppercase + string.digits
    return ''.join(
        random.SystemRandom().choice(charset)
        for _ in range(length)
    )

#Original copied from https://github.com/andrewlkho/ulagen
def random_ipv6_subnet():
    eui64 = uuid.getnode() >> 24 << 48 | 0xfffe000000 | uuid.getnode() & 0xffffff
    eui64_canon = "-".join([format(eui64, "02X")[i:i+2] for i in range(0, 18, 2)])

    h = hashlib.sha1()
    h.update((eui64_canon + str(time.time() - time.mktime((1900, 1, 1, 0, 0, 0, 0, 1, -1)))).encode('utf-8'))
    globalid = h.hexdigest()[0:10]

    prefix = ":".join(("fd" + globalid[0:2], globalid[2:6], globalid[6:10]))
    return prefix

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