def get_vrf_prefix(self, request, vrf_id, afi, prefix):
vrf = self.get_object_or_404(VRF, id=int(vrf_id))
if not prefix:
prefix = VRF.IPv4_ROOT if afi == "4" else VRF.IPv6_ROOT
if (afi == "4" and (not is_ipv4_prefix(prefix) or not vrf.afi_ipv4)) or (
afi == "6" and (not is_ipv6_prefix(prefix) or not vrf.afi_ipv6)
):
return self.response_forbidden("Invalid prefix")
prefix = self.get_object_or_404(Prefix, vrf=vrf, afi=afi, prefix=prefix)
return self.prefix_contents(request, prefix=prefix)
def view_vrf_index(self, request, vrf_id, afi, prefix):
"""
Display VRF Index
"""
# Validate
vrf = self.get_object_or_404(VRF, id=int(vrf_id))
if (afi == "4" and (not is_ipv4_prefix(prefix)) or not vrf.afi_ipv4) or (
afi == "6" and (not is_ipv6_prefix(prefix) or not vrf.afi_ipv6)
):
return self.response_forbidden("Invalid prefix")
prefix = self.get_object_or_404(Prefix, vrf=vrf, afi=afi, prefix=prefix)
# Get prefix path
path = []
p = prefix.parent
while p:
path = [p] + path
p = p.parent
# List of nested prefixes
# @todo: prefetch_related
prefixes = list(prefix.children_set.select_related().order_by("prefix"))
# Bulk utilization
Prefix.update_prefixes_usage(prefixes)
# Get permissions
user = request.user
can_view = prefix.can_view(user)
can_change = prefix.can_change(user)
can_bind_vc = can_change and Permission.has_perm(user, "ip:ipam:bind_vc")
can_change_maintainers = user.is_superuser
can_add_prefix = can_change
can_add_address = can_change and len(prefixes) == 0
can_edit_special = prefix.effective_prefix_special_address == "I"
# Bookmarks
has_bookmark = prefix.has_bookmark(user)
bookmarks = PrefixBookmark.user_bookmarks(user, vrf=vrf, afi=afi)
s_bookmarks = set(b.prefix for b in bookmarks)
# Add free prefixes
free_prefixes = list(IP.prefix(prefix.prefix).iter_free([pp.prefix for pp in prefixes]))
l_prefixes = sorted(
(
[(True, IP.prefix(pp.prefix), pp, pp.prefix in s_bookmarks) for pp in prefixes]
+ [(False, pp, None, None) for pp in free_prefixes]
),
key=lambda x: x[1],
)
# List of nested addresses
# @todo: prefetch_related
addresses = list(prefix.address_set.select_related().order_by("address"))
# Prepare block info
prefix_info = [("Network", prefix.prefix)]
if afi == "4":
prefix_info += [
("Broadcast", prefix.broadcast),
("Netmask", prefix.netmask),
("Widlcard", prefix.wildcard),
("Size", prefix.size),
("Usage", prefix.usage_percent),
("Usage Address", prefix.address_usage_percent),
]
if addresses:
prefix_info += [("Used addresses", len(addresses))]
if afi == "4":
free = prefix.size - len(addresses)
prefix_info += [("Free addresses", free - 2 if free >= 2 else free)]
# Prefix discovery
dmap = {"E": "Enabled", "D": "Disabled"}
if prefix.prefix_discovery_policy == "P":
t = "Profile (%s)" % dmap[prefix.profile.prefix_discovery_policy]
else:
t = dmap[prefix.prefix_discovery_policy]
prefix_info += [("Prefix Discovery", t)]
# Address discovery
if prefix.address_discovery_policy == "P":
t = "Profile (%s)" % dmap[prefix.profile.address_discovery_policy]
else:
t = dmap[prefix.address_discovery_policy]
prefix_info += [("Address Discovery", t)]
# Source
prefix_info += [
(
"Source",
{"M": "Manual", "i": "Interface", "w": "Whois Route", "n": "Neighbor"}.get(
prefix.source, "-"
),
)
]
#
# Add custom fields
for f in CustomField.table_fields("ip_prefix"):
v = getattr(prefix, f.name)
prefix_info += [(f.label, v if v is not None else "")]
# Ranges
ranges = []
rs = []
max_slots = 0
r_spots = []
if addresses:
# Assign ranges colors
ranges = list(prefix.address_ranges)
for r, c in zip(ranges, get_colors(len(ranges))):
r.color = c
# Schedule ranges
r_changes = {} # Address -> (set of entering ranges, set of leaving ranges)
for r in ranges:
if r.from_address not in r_changes:
r_changes[r.from_address] = (set(), set())
if r.to_address not in r_changes:
r_changes[r.to_address] = (set(), set())
r_changes[r.from_address][0].add(r)
r_changes[r.to_address][1].add(r)
# <!>
n = (IP.prefix(r.to_address) + 1).address
if n not in r_changes:
r_changes[n] = (set(), set())
r_spots = list(six.iterkeys(r_changes))
# Allocate slots
used_slots = set()
free_slots = set()
r_slots = {} # Range -> slot
max_slots = 0
rs = sorted(
([IP.prefix(i), d, []] for i, d in six.iteritems(r_changes)), key=itemgetter(0)
)
for address, d, x in rs:
entering, leaving = d
for r in entering:
if not free_slots:
free_slots.add(max_slots)
max_slots += 1
s = free_slots.pop()
used_slots.add(s)
r_slots[r] = s
for r in leaving:
s = r_slots[r]
used_slots.remove(s)
free_slots.add(s)
# Assign ranges to slots
slots = [None] * max_slots
for r in rs:
address, [entering, leaving], _ = r
for e in entering:
slots[r_slots[e]] = e
r[2] = slots[:]
for l in leaving:
slots[r_slots[l]] = None
# Assign slots to addresses
c = [None] * max_slots
rrs = rs[:]
cr = rrs.pop(0) if rrs else None
for a in addresses:
address = IP.prefix(a.address)
while cr and address >= cr[0]:
c = cr[2]
if rrs:
cr = rrs.pop(0)
else:
break
a.slots = c
# Address spot
if can_add_address:
special_addr = IP.prefix(prefix.prefix).special_addresses
c = [None] * max_slots
rrs = rs[:]
if rrs:
cr = rrs.pop(0)
else:
cr = None
spot = []
for a in self.get_prefix_spot(prefix, extra=r_spots):
if cr and a is not None and a == cr[0]:
c = [None if cc is None else cc.id for cc in cr[2]]
if rrs:
cr = rrs.pop(0)
spot += [(None if a is None else a.address, c, a in special_addr)]
spot = ujson.dumps(spot)
else:
spot = None
can_ping = spot is not None and len([a for a in addresses if a.managed_object]) > 0
# Build custom styles
styles = {}
if prefix.profile.style:
styles[prefix.profile.style.css_class_name] = prefix.profile.style.css
for p in prefixes:
if p.profile.style and p.profile.style.css_class_name not in styles:
styles[p.profile.style.css_class_name] = p.profile.style.css
for a in addresses:
if a.profile.style and a.profile.style.css_class_name not in styles:
styles[a.profile.style.css_class_name] = a.profile.style.css
styles = "\n".join(six.itervalues(styles))
# Render
return self.render(
request,
"vrf_index.html.j2",
user=request.user,
vrf=vrf,
prefix=prefix,
path=path,
prefixes=prefixes,
addresses=addresses,
prefix_info=prefix_info,
display_empty_message=not addresses and not prefixes,
can_view=can_view,
can_change=can_change,
can_bind_vc=can_bind_vc,
can_change_maintainers=can_change_maintainers,
can_add_prefix=can_add_prefix,
can_add_address=can_add_address,
can_edit_special=can_edit_special,
has_bookmark=has_bookmark,
bookmarks=bookmarks,
spot=spot,
can_ping=can_ping,
styles=styles,
ranges=ranges,
max_slots=max_slots,
l_prefixes=l_prefixes,
)
def test_is_ipv4_prefix(raw, expected):
assert is_ipv4_prefix(raw) is expected