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-rwxr-xr-xsrc/conf_mode/service_ipoe-server.py97
1 files changed, 97 insertions, 0 deletions
diff --git a/src/conf_mode/service_ipoe-server.py b/src/conf_mode/service_ipoe-server.py
index 4fabe170f..95c72df47 100755
--- a/src/conf_mode/service_ipoe-server.py
+++ b/src/conf_mode/service_ipoe-server.py
@@ -15,6 +15,7 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
+import jmespath
from sys import exit
@@ -29,9 +30,92 @@ from vyos import ConfigError
from vyos import airbag
airbag.enable()
+
ipoe_conf = '/run/accel-pppd/ipoe.conf'
ipoe_chap_secrets = '/run/accel-pppd/ipoe.chap-secrets'
+
+def get_pools_in_order(data: dict) -> list:
+ """Return a list of dictionaries representing pool data in the order
+ in which they should be allocated. Pool must be defined before we can
+ use it with 'next-pool' option.
+
+ Args:
+ data: A dictionary of pool data, where the keys are pool names and the
+ values are dictionaries containing the 'subnet' key and the optional
+ 'next_pool' key.
+
+ Returns:
+ list: A list of dictionaries
+
+ Raises:
+ ValueError: If a 'next_pool' key references a pool name that
+ has not been defined.
+ ValueError: If a circular reference is found in the 'next_pool' keys.
+
+ Example:
+ config_data = {
+ ... 'first-pool': {
+ ... 'next_pool': 'second-pool',
+ ... 'subnet': '192.0.2.0/25'
+ ... },
+ ... 'second-pool': {
+ ... 'next_pool': 'third-pool',
+ ... 'subnet': '203.0.113.0/25'
+ ... },
+ ... 'third-pool': {
+ ... 'subnet': '198.51.100.0/24'
+ ... },
+ ... 'foo': {
+ ... 'subnet': '100.64.0.0/24',
+ ... 'next_pool': 'second-pool'
+ ... }
+ ... }
+
+ % get_pools_in_order(config_data)
+ [{'third-pool': {'subnet': '198.51.100.0/24'}},
+ {'second-pool': {'next_pool': 'third-pool', 'subnet': '203.0.113.0/25'}},
+ {'first-pool': {'next_pool': 'second-pool', 'subnet': '192.0.2.0/25'}},
+ {'foo': {'next_pool': 'second-pool', 'subnet': '100.64.0.0/24'}}]
+ """
+ pools = []
+ unresolved_pools = {}
+
+ for pool, pool_config in data.items():
+ if 'next_pool' not in pool_config:
+ pools.insert(0, {pool: pool_config})
+ else:
+ unresolved_pools[pool] = pool_config
+
+ while unresolved_pools:
+ resolved_pools = []
+
+ for pool, pool_config in unresolved_pools.items():
+ next_pool_name = pool_config['next_pool']
+
+ if any(p for p in pools if next_pool_name in p):
+ index = next(
+ (i for i, p in enumerate(pools) if next_pool_name in p),
+ None)
+ pools.insert(index + 1, {pool: pool_config})
+ resolved_pools.append(pool)
+ elif next_pool_name in unresolved_pools:
+ # next pool not yet resolved
+ pass
+ else:
+ raise ValueError(
+ f"Pool '{next_pool_name}' not defined in configuration data"
+ )
+
+ if not resolved_pools:
+ raise ValueError("Circular reference in configuration data")
+
+ for pool in resolved_pools:
+ unresolved_pools.pop(pool)
+
+ return pools
+
+
def get_config(config=None):
if config:
conf = config
@@ -43,6 +127,19 @@ def get_config(config=None):
# retrieve common dictionary keys
ipoe = get_accel_dict(conf, base, ipoe_chap_secrets)
+
+ if jmespath.search('client_ip_pool.name', ipoe):
+ dict_named_pools = jmespath.search('client_ip_pool.name', ipoe)
+ # Multiple named pools require ordered values T5099
+ ipoe['ordered_named_pools'] = get_pools_in_order(dict_named_pools)
+ # T5099 'next-pool' option
+ if jmespath.search('client_ip_pool.name.*.next_pool', ipoe):
+ for pool, pool_config in ipoe['client_ip_pool']['name'].items():
+ if 'next_pool' in pool_config:
+ ipoe['first_named_pool'] = pool
+ ipoe['first_named_pool_subnet'] = pool_config
+ break
+
return ipoe