Revision a4658bbe snf-cyclades-app/synnefo/logic/networks.py
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# documentation are those of the authors and should not be |
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# interpreted as representing official policies, either expressed |
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# or implied, of GRNET S.A. |
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import ipaddr |
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from functools import wraps |
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from django.db import transaction |
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from django.conf import settings |
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from snf_django.lib.api import faults |
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from synnefo.api import util |
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from synnefo import quotas |
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raise faults.BadRequest("IPv6 only networks can not be"
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" pools.") |
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# Check that network parameters are valid |
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util.validate_network_params(subnet, gateway, subnet6, gateway6)
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validate_network_params(subnet, gateway, subnet6, gateway6) |
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try: |
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fmode, flink, fmac_prefix, ftags = util.values_from_flavor(flavor) |
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# If network does not exist in any backend, update the network state |
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backend_mod.update_network_state(network) |
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return network |
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def validate_network_params(subnet=None, gateway=None, subnet6=None, |
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gateway6=None): |
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if (subnet is None) and (subnet6 is None): |
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raise faults.BadRequest("subnet or subnet6 is required")
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if subnet: |
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try: |
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# Use strict option to not all subnets with host bits set |
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network = ipaddr.IPv4Network(subnet, strict=True) |
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except ValueError: |
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raise faults.BadRequest("Invalid network IPv4 subnet")
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# Check that network size is allowed! |
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prefixlen = network.prefixlen |
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if not prefixlen <= 29 and prefixlen > settings.MAX_CIDR_BLOCK: |
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raise faults.OverLimit(message="Unsupported network size", |
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details="Network mask must be in range" |
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" (%s, 29]" |
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% settings.MAX_CIDR_BLOCK) |
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if gateway: # Check that gateway belongs to network |
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try: |
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gateway = ipaddr.IPv4Address(gateway) |
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except ValueError: |
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raise faults.BadRequest("Invalid network IPv4 gateway")
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if not gateway in network: |
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raise faults.BadRequest("Invalid network IPv4 gateway")
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if subnet6: |
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try: |
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# Use strict option to not all subnets with host bits set |
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network6 = ipaddr.IPv6Network(subnet6, strict=True) |
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except ValueError: |
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raise faults.BadRequest("Invalid network IPv6 subnet")
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if gateway6: |
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try: |
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gateway6 = ipaddr.IPv6Address(gateway6) |
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except ValueError: |
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raise faults.BadRequest("Invalid network IPv6 gateway")
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if not gateway6 in network6: |
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raise faults.BadRequest("Invalid network IPv6 gateway")
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