164
169
if is_ipv6(address):
165
170
address = "[%s]" % address
167
log("Not an valid ipv6 address: %s" % address,
172
log("Not a valid ipv6 address: %s" % address, level=WARNING)
173
def get_iface_addr(iface='eth0', inet_type='AF_INET', inc_aliases=False, fatal=True, exc_list=None):
178
def get_iface_addr(iface='eth0', inet_type='AF_INET', inc_aliases=False,
179
fatal=True, exc_list=None):
175
181
Return the assigned IP address for a given interface, if any, or [].
210
216
if 'addr' in entry and entry['addr'] not in exc_list:
211
217
addresses.append(entry['addr'])
212
218
if fatal and not addresses:
213
raise Exception("Interface '%s' doesn't have any %s addresses." % (iface, inet_type))
219
raise Exception("Interface '%s' doesn't have any %s addresses." %
216
223
get_ipv4_addr = partial(get_iface_addr, inet_type='AF_INET')
219
def get_ipv6_addr(iface='eth0', inc_aliases=False, fatal=True, exc_list=None):
226
def get_iface_from_addr(addr):
227
"""Work out on which interface the provided address is configured."""
228
for iface in netifaces.interfaces():
229
addresses = netifaces.ifaddresses(iface)
230
for inet_type in addresses:
231
for _addr in addresses[inet_type]:
232
_addr = _addr['addr']
234
ll_key = re.compile("(.+)%.*")
235
raw = re.match(ll_key, _addr)
239
log("Address '%s' is configured on iface '%s'" %
243
msg = "Unable to infer net iface on which '%s' is configured" % (addr)
248
"""If no iface provided, inject net iface inferred from unit private
221
Return the assigned IPv6 address for a given interface, if any, or [].
251
def iface_sniffer(*args, **kwargs):
252
if not kwargs.get('iface', None):
253
kwargs['iface'] = get_iface_from_addr(unit_get('private-address'))
255
return f(*args, **kwargs)
261
def get_ipv6_addr(iface=None, inc_aliases=False, fatal=True, exc_list=None,
263
"""Get assigned IPv6 address for a given interface.
265
Returns list of addresses found. If no address found, returns empty list.
267
If iface is None, we infer the current primary interface by doing a reverse
268
lookup on the unit private-address.
270
We currently only support scope global IPv6 addresses i.e. non-temporary
271
addresses. If no global IPv6 address is found, return the first one found
272
in the ipv6 address list.
223
274
addresses = get_iface_addr(iface=iface, inet_type='AF_INET6',
224
275
inc_aliases=inc_aliases, fatal=fatal,
225
276
exc_list=exc_list)
226
remotly_addressable = []
227
for address in addresses:
228
if not address.startswith('fe80'):
229
remotly_addressable.append(address)
230
if fatal and not remotly_addressable:
231
raise Exception("Interface '%s' doesn't have global ipv6 address." % iface)
232
return remotly_addressable
280
for addr in addresses:
281
key_scope_link_local = re.compile("^fe80::..(.+)%(.+)")
282
m = re.match(key_scope_link_local, addr)
284
eui_64_mac = m.group(1)
287
global_addrs.append(addr)
290
# Make sure any found global addresses are not temporary
291
cmd = ['ip', 'addr', 'show', iface]
292
out = subprocess.check_output(cmd)
294
key = re.compile("inet6 (.+)/[0-9]+ scope global dynamic.*")
296
key = re.compile("inet6 (.+)/[0-9]+ scope global.*")
299
for line in out.split('\n'):
301
m = re.match(key, line)
302
if m and 'temporary' not in line:
303
# Return the first valid address we find
304
for addr in global_addrs:
305
if m.group(1) == addr:
306
if not dynamic_only or \
307
m.group(1).endswith(eui_64_mac):
314
raise Exception("Interface '%s' doesn't have a scope global "
315
"non-temporary ipv6 address." % iface)
235
320
def get_bridges(vnic_dir='/sys/devices/virtual/net'):