diff options
| -rw-r--r-- | isys/isys.py | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/isys/isys.py b/isys/isys.py index 664cbbfe7..76de07592 100644 --- a/isys/isys.py +++ b/isys/isys.py @@ -40,11 +40,29 @@ def inet_ntoa (addr): def inet_aton (addr): quad = string.splitfields (addr, ".") - return ((string.atoi (quad[0]) << 24) + - (string.atoi (quad[1]) << 16) + - (string.atoi (quad[2]) << 8) + - string.atoi (quad[3])) + try: + rc = ((string.atoi (quad[0]) << 24) + + (string.atoi (quad[1]) << 16) + + (string.atoi (quad[2]) << 8) + + string.atoi (quad[3])) + except IndexError: + raise ValueError + return rc +def inet_calcNetmask (ip): + if isinstance (ip, type ("")): + ipaddr = inet_aton (ip) + else: + ipaddr = ip + if (ipaddr >> 24 & 0x000000ff) <= 127: + mask = "255.0.0.0"; + elif (ipaddr >> 24 & 0x000000ff) <= 191: + mask = "255.255.0.0"; + else: + mask = "255.255.255.0"; + + return mask + try: _isys.readmoduleinfo("/modules/module-info") except IOError: |