vrf: T6602: verify supplied VRF name on all interface types (#3870)

Only some (e.g. ethernet or wireguard) interfaces validate if the supplied VRF
actually exists. If this is not validated, one can pass an invalid VRF to the
system which generates an OSError exception.

To reproduce

set interfaces vxlan vxlan1 vni 1000
set interfaces vxlan vxlan1 remote 1.2.3.4
set interfaces vxlan vxlan1 vrf smoketest

results in

OSError: [Errno 255] failed to run command: ip link set dev vxlan1 master smoketest_mgmt

This commit adds the missing verify_vrf() call to the missing interface types
and an appropriate smoketest for all interfaces supporting VRF assignment.

(cherry picked from commit dd0ebffa33728e452ac6e11737c2283f0e390359)

Co-authored-by: Christian Breunig <christian@breunig.cc>

5 files changed, 26 insertions, 0 deletions

diff --git a/smoketest/scripts/cli/base_interfaces_test.py b/smoketest/scripts/cli/base_interfaces_test.py
index 4072fd5c2..66b789e94 100644
--- a/smoketest/scripts/cli/base_interfaces_test.py
+++ b/smoketest/scripts/cli/base_interfaces_test.py
@@ -303,6 +303,24 @@ class BasicInterfaceTest:
             self.cli_delete(['vrf', 'name', vrf1_name])
             self.cli_delete(['vrf', 'name', vrf2_name])
 
+        def test_add_to_invalid_vrf(self):
+            if not self._test_vrf:
+                self.skipTest('not supported')
+
+            # move interface into first VRF
+            for interface in self._interfaces:
+                for option in self._options.get(interface, []):
+                    self.cli_set(self._base_path + [interface] + option.split())
+                self.cli_set(self._base_path + [interface, 'vrf', 'invalid'])
+
+            # check validate() - can not use a non-existing VRF
+            with self.assertRaises(ConfigSessionError):
+                self.cli_commit()
+
+            for interface in self._interfaces:
+                self.cli_delete(self._base_path + [interface, 'vrf', 'invalid'])
+                self.cli_set(self._base_path + [interface, 'description', 'test_add_to_invalid_vrf'])
+
         def test_span_mirror(self):
             if not self._mirror_interfaces:
                 self.skipTest('not supported')
diff --git a/src/conf_mode/interfaces_geneve.py b/src/conf_mode/interfaces_geneve.py
index 769139e0f..007708d4a 100755
--- a/src/conf_mode/interfaces_geneve.py
+++ b/src/conf_mode/interfaces_geneve.py
@@ -24,6 +24,7 @@ from vyos.configverify import verify_mtu_ipv6
 from vyos.configverify import verify_bridge_delete
 from vyos.configverify import verify_mirror_redirect
 from vyos.configverify import verify_bond_bridge_member
+from vyos.configverify import verify_vrf
 from vyos.ifconfig import GeneveIf
 from vyos.utils.network import interface_exists
 from vyos import ConfigError
@@ -59,6 +60,7 @@ def verify(geneve):
 
     verify_mtu_ipv6(geneve)
     verify_address(geneve)
+    verify_vrf(geneve)
     verify_bond_bridge_member(geneve)
     verify_mirror_redirect(geneve)
 
diff --git a/src/conf_mode/interfaces_l2tpv3.py b/src/conf_mode/interfaces_l2tpv3.py
index e25793543..b9f827bee 100755
--- a/src/conf_mode/interfaces_l2tpv3.py
+++ b/src/conf_mode/interfaces_l2tpv3.py
@@ -24,6 +24,7 @@ from vyos.configverify import verify_bridge_delete
 from vyos.configverify import verify_mtu_ipv6
 from vyos.configverify import verify_mirror_redirect
 from vyos.configverify import verify_bond_bridge_member
+from vyos.configverify import verify_vrf
 from vyos.ifconfig import L2TPv3If
 from vyos.utils.kernel import check_kmod
 from vyos.utils.network import is_addr_assigned
@@ -76,6 +77,7 @@ def verify(l2tpv3):
 
     verify_mtu_ipv6(l2tpv3)
     verify_address(l2tpv3)
+    verify_vrf(l2tpv3)
     verify_bond_bridge_member(l2tpv3)
     verify_mirror_redirect(l2tpv3)
     return None
diff --git a/src/conf_mode/interfaces_vti.py b/src/conf_mode/interfaces_vti.py
index e6a833df7..20629c6c1 100755
--- a/src/conf_mode/interfaces_vti.py
+++ b/src/conf_mode/interfaces_vti.py
@@ -19,6 +19,7 @@ from sys import exit
 from vyos.config import Config
 from vyos.configdict import get_interface_dict
 from vyos.configverify import verify_mirror_redirect
+from vyos.configverify import verify_vrf
 from vyos.ifconfig import VTIIf
 from vyos import ConfigError
 from vyos import airbag
@@ -38,6 +39,7 @@ def get_config(config=None):
     return vti
 
 def verify(vti):
+    verify_vrf(vti)
     verify_mirror_redirect(vti)
     return None
 
diff --git a/src/conf_mode/interfaces_vxlan.py b/src/conf_mode/interfaces_vxlan.py
index 39365968a..bc4918a52 100755
--- a/src/conf_mode/interfaces_vxlan.py
+++ b/src/conf_mode/interfaces_vxlan.py
@@ -28,6 +28,7 @@ from vyos.configverify import verify_mtu_ipv6
 from vyos.configverify import verify_mirror_redirect
 from vyos.configverify import verify_source_interface
 from vyos.configverify import verify_bond_bridge_member
+from vyos.configverify import verify_vrf
 from vyos.ifconfig import Interface
 from vyos.ifconfig import VXLANIf
 from vyos.template import is_ipv6
@@ -193,6 +194,7 @@ def verify(vxlan):
 
     verify_mtu_ipv6(vxlan)
     verify_address(vxlan)
+    verify_vrf(vxlan)
     verify_bond_bridge_member(vxlan)
     verify_mirror_redirect(vxlan)