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juanfont.headscale/hscontrol/policy/route_approval_test.go
Kristoffer Dalby 9d236571f4 state/nodestore: in memory representation of nodes 
Initial work on a nodestore which stores all of the nodes
and their relations in memory with relationship for peers
precalculated.

It is a copy-on-write structure, replacing the "snapshot"
when a change to the structure occurs. It is optimised for reads,
and while batches are not fast, they are grouped together
to do less of the expensive peer calculation if there are many
changes rapidly.

Writes will block until commited, while reads are never
blocked.

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
2025-09-09 09:40:00 +02:00

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package policy
import (
"fmt"
"net/netip"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/juanfont/headscale/hscontrol/types"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"gorm.io/gorm"
)
func TestNodeCanApproveRoute(t *testing.T) {
users := []types.User{
{Name: "user1", Model: gorm.Model{ID: 1}},
{Name: "user2", Model: gorm.Model{ID: 2}},
{Name: "user3", Model: gorm.Model{ID: 3}},
}
// Create standard node setups used across tests
normalNode := types.Node{
ID: 1,
Hostname: "user1-device",
IPv4: ap("100.64.0.1"),
UserID: 1,
User: users[0],
}
exitNode := types.Node{
ID: 2,
Hostname: "user2-device",
IPv4: ap("100.64.0.2"),
UserID: 2,
User: users[1],
}
taggedNode := types.Node{
ID: 3,
Hostname: "tagged-server",
IPv4: ap("100.64.0.3"),
UserID: 3,
User: users[2],
ForcedTags: []string{"tag:router"},
}
multiTagNode := types.Node{
ID: 4,
Hostname: "multi-tag-node",
IPv4: ap("100.64.0.4"),
UserID: 2,
User: users[1],
ForcedTags: []string{"tag:router", "tag:server"},
}
tests := []struct {
name string
node types.Node
route netip.Prefix
policy string
canApprove bool
}{
{
name: "allow-all-routes-for-admin-user",
node: normalNode,
route: p("192.168.1.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"192.168.0.0/16": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "deny-route-that-doesnt-match-autoApprovers",
node: normalNode,
route: p("10.0.0.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"192.168.0.0/16": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "user-not-in-group",
node: exitNode,
route: p("192.168.1.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"192.168.0.0/16": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "tagged-node-can-approve",
node: taggedNode,
route: p("10.0.0.0/8"),
policy: `{
"tagOwners": {
"tag:router": ["user3@"]
},
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"10.0.0.0/8": ["tag:router"]
}
}
}`,
canApprove: true,
},
{
name: "multiple-routes-in-policy",
node: normalNode,
route: p("172.16.10.0/24"),
policy: `{
"tagOwners": {
"tag:router": ["user3@"]
},
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"192.168.0.0/16": ["group:admin"],
"172.16.0.0/12": ["group:admin"],
"10.0.0.0/8": ["tag:router"]
}
}
}`,
canApprove: true,
},
{
name: "match-specific-route-within-range",
node: normalNode,
route: p("192.168.5.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"192.168.0.0/16": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "ip-address-within-range",
node: normalNode,
route: p("192.168.1.5/32"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"192.168.1.0/24": ["group:admin"],
"192.168.1.128/25": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "all-IPv4-routes-(0.0.0.0/0)-approval",
node: normalNode,
route: p("0.0.0.0/0"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"0.0.0.0/0": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "all-IPv4-routes-exitnode-approval",
node: normalNode,
route: p("0.0.0.0/0"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"exitNode": ["group:admin"]
}
}`,
canApprove: true,
},
{
name: "all-IPv6-routes-exitnode-approval",
node: normalNode,
route: p("::/0"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"exitNode": ["group:admin"]
}
}`,
canApprove: true,
},
{
name: "specific-IPv4-route-with-exitnode-only-approval",
node: normalNode,
route: p("192.168.1.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"exitNode": ["group:admin"]
}
}`,
canApprove: false,
},
{
name: "specific-IPv6-route-with-exitnode-only-approval",
node: normalNode,
route: p("fd00::/8"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"exitNode": ["group:admin"]
}
}`,
canApprove: false,
},
{
name: "specific-IPv4-route-with-all-routes-policy",
node: normalNode,
route: p("10.0.0.0/8"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"0.0.0.0/0": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "all-IPv6-routes-(::0/0)-approval",
node: normalNode,
route: p("::/0"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"::/0": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "specific-IPv6-route-with-all-routes-policy",
node: normalNode,
route: p("fd00::/8"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"::/0": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "IPv6-route-with-IPv4-all-routes-policy",
node: normalNode,
route: p("fd00::/8"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"0.0.0.0/0": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "IPv4-route-with-IPv6-all-routes-policy",
node: normalNode,
route: p("10.0.0.0/8"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"::/0": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "both-IPv4-and-IPv6-all-routes-policy",
node: normalNode,
route: p("192.168.1.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"0.0.0.0/0": ["group:admin"],
"::/0": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "ip-address-with-all-routes-policy",
node: normalNode,
route: p("192.168.101.5/32"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"0.0.0.0/0": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "specific-IPv6-host-route-with-all-routes-policy",
node: normalNode,
route: p("2001:db8::1/128"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"::/0": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "multiple-groups-allowed-to-approve-same-route",
node: normalNode,
route: p("192.168.1.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"],
"group:netadmin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"192.168.1.0/24": ["group:admin", "group:netadmin"]
}
}
}`,
canApprove: true,
},
{
name: "overlapping-routes-with-different-groups",
node: normalNode,
route: p("192.168.1.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"],
"group:restricted": ["user2@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"192.168.0.0/16": ["group:restricted"],
"192.168.1.0/24": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "unique-local-IPv6-address-with-all-routes-policy",
node: normalNode,
route: p("fc00::/7"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"::/0": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "exact-prefix-match-in-policy",
node: normalNode,
route: p("203.0.113.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"203.0.113.0/24": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "narrower-range-than-policy",
node: normalNode,
route: p("203.0.113.0/26"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"203.0.113.0/24": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "wider-range-than-policy-should-fail",
node: normalNode,
route: p("203.0.113.0/23"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"203.0.113.0/24": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "adjacent-route-to-policy-route-should-fail",
node: normalNode,
route: p("203.0.114.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"203.0.113.0/24": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "combined-routes-and-exitnode-approvers-specific-route",
node: normalNode,
route: p("192.168.1.0/24"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"exitNode": ["group:admin"],
"routes": {
"192.168.1.0/24": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "partly-overlapping-route-with-policy-should-fail",
node: normalNode,
route: p("203.0.113.128/23"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"203.0.113.0/24": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "multiple-routes-with-aggregatable-ranges",
node: normalNode,
route: p("10.0.0.0/8"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"10.0.0.0/9": ["group:admin"],
"10.128.0.0/9": ["group:admin"]
}
}
}`,
canApprove: false,
},
{
name: "non-standard-IPv6-notation",
node: normalNode,
route: p("2001:db8::1/128"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"2001:db8::/32": ["group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "node-with-multiple-tags-all-required",
node: multiTagNode,
route: p("10.10.0.0/16"),
policy: `{
"tagOwners": {
"tag:router": ["user2@"],
"tag:server": ["user2@"]
},
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"10.10.0.0/16": ["tag:router", "tag:server"]
}
}
}`,
canApprove: true,
},
{
name: "node-with-multiple-tags-one-matching-is-sufficient",
node: multiTagNode,
route: p("10.10.0.0/16"),
policy: `{
"tagOwners": {
"tag:router": ["user2@"],
"tag:server": ["user2@"]
},
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"10.10.0.0/16": ["tag:router", "group:admin"]
}
}
}`,
canApprove: true,
},
{
name: "node-with-multiple-tags-missing-required-tag",
node: multiTagNode,
route: p("10.10.0.0/16"),
policy: `{
"tagOwners": {
"tag:othertag": ["user1@"]
},
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"10.10.0.0/16": ["tag:othertag"]
}
}
}`,
canApprove: false,
},
{
name: "node-with-tag-and-group-membership",
node: normalNode,
route: p("10.20.0.0/16"),
policy: `{
"tagOwners": {
"tag:router": ["user3@"]
},
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"routes": {
"10.20.0.0/16": ["group:admin", "tag:router"]
}
}
}`,
canApprove: true,
},
{
name: "small-subnet-with-exitnode-only-approval",
node: normalNode,
route: p("192.168.1.1/32"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{"action": "accept", "src": ["group:admin"], "dst": ["*:*"]}
],
"autoApprovers": {
"exitNode": ["group:admin"]
}
}`,
canApprove: false,
},
{
name: "empty-policy",
node: normalNode,
route: p("192.168.1.0/24"),
policy: `{"acls":[{"action":"accept","src":["*"],"dst":["*:*"]}]}`,
canApprove: false,
},
{
name: "policy-without-autoApprovers-section",
node: normalNode,
route: p("10.33.0.0/16"),
policy: `{
"groups": {
"group:admin": ["user1@"]
},
"acls": [
{
"action": "accept",
"src": ["group:admin"],
"dst": ["group:admin:*"]
},
{
"action": "accept",
"src": ["group:admin"],
"dst": ["10.33.0.0/16:*"]
}
]
}`,
canApprove: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
// Initialize all policy manager implementations
policyManagers, err := PolicyManagersForTest([]byte(tt.policy), users, types.Nodes{&tt.node}.ViewSlice())
if tt.name == "empty policy" {
// We expect this one to have a valid but empty policy
require.NoError(t, err)
if err != nil {
return
}
} else {
require.NoError(t, err)
}
for i, pm := range policyManagers {
t.Run(fmt.Sprintf("policy-index%d", i), func(t *testing.T) {
result := pm.NodeCanApproveRoute(tt.node.View(), tt.route)
if diff := cmp.Diff(tt.canApprove, result); diff != "" {
t.Errorf("NodeCanApproveRoute() mismatch (-want +got):\n%s", diff)
}
assert.Equal(t, tt.canApprove, result, "Unexpected route approval result")
})
}
})
}
}
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