bundlewrap/bundles/bird/metadata.py

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from ipaddress import ip_network
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from bundlewrap.exceptions import NoSuchNode
from bundlewrap.metadata import atomic
defaults = {
'apt': {
'packages': {
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'bird2': {
'needed_by': {
'svc_systemd:bird',
},
},
},
},
'pacman': {
'packages': {
'bird': {
'needed_by': {
'svc_systemd:bird',
},
},
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},
},
'sysctl': {
'options': {
'net.ipv4.conf.all.forwarding': '1',
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'net.ipv6.conf.all.forwarding': '1',
},
},
}
@metadata_reactor.provides(
'bird/bgp_neighbors',
)
def neighbor_info_from_wireguard(metadata):
neighbors = {}
my_as = repo.libs.s2s.AS_NUMBERS[metadata.get('location')]
for name, config in metadata.get('wireguard/peers', {}).items():
try:
rnode = repo.get_node(name)
except NoSuchNode:
continue
if not rnode.has_bundle('bird'):
continue
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neighbors[name] = {
'local_ip': config['my_ip'],
'local_as': my_as,
'neighbor_ip': config['their_ip'],
'neighbor_as': repo.libs.s2s.AS_NUMBERS[rnode.metadata.get('location')],
}
return {
'bird': {
'bgp_neighbors': neighbors,
},
}
@metadata_reactor.provides(
'bird/my_ip',
)
def my_ip(metadata):
if node.has_bundle('wireguard'):
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wg_ifaces = sorted({iface for iface in metadata.get('interfaces').keys() if iface.startswith('wg_')})
if not wg_ifaces:
return {}
my_ip = sorted(metadata.get(f'interfaces/{wg_ifaces[0]}/ips'))[0].split('/')[0]
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else:
my_ip = str(sorted(repo.libs.tools.resolve_identifier(repo, node.name))[0])
return {
'bird': {
'my_ip': my_ip,
},
}
@metadata_reactor.provides(
'firewall/port_rules',
)
def firewall(metadata):
sources = set()
for config in metadata.get('bird/bgp_neighbors', {}).values():
sources.add(config['neighbor_ip'])
return {
'firewall': {
'port_rules': {
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'179/tcp': atomic(sources),
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},
},
}