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policy: add tests to validate fix for 2181

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Fixes #2181

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit is contained in:
Kristoffer Dalby 2025-05-02 16:30:21 +02:00
parent 06c5390d89
commit fbd3049e89
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1 changed files with 104 additions and 2 deletions
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106
hscontrol/policy/policy_test.go
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@ -2,10 +2,11 @@ package policy
import (
"fmt"
"github.com/juanfont/headscale/hscontrol/policy/matcher"
"net/netip"
"testing"
"github.com/juanfont/headscale/hscontrol/policy/matcher"
"github.com/google/go-cmp/cmp"
"github.com/juanfont/headscale/hscontrol/types"
"github.com/juanfont/headscale/hscontrol/util"
@ -1370,7 +1371,6 @@ func TestFilterNodesByACL(t *testing.T) {
},
},
},
{
name: "subnet-router-with-only-route",
args: args{
@ -1422,6 +1422,108 @@ func TestFilterNodesByACL(t *testing.T) {
},
},
},
{
name: "subnet-router-with-only-route-smaller-mask-2181",
args: args{
nodes: []*types.Node{
{
ID: 1,
IPv4: ap("100.64.0.1"),
Hostname: "router",
User: types.User{Name: "router"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: []netip.Prefix{netip.MustParsePrefix("10.99.0.0/16")},
},
ApprovedRoutes: []netip.Prefix{netip.MustParsePrefix("10.99.0.0/16")},
},
{
ID: 2,
IPv4: ap("100.64.0.2"),
Hostname: "node",
User: types.User{Name: "node"},
},
},
rules: []tailcfg.FilterRule{
{
SrcIPs: []string{
"100.64.0.2/32",
},
DstPorts: []tailcfg.NetPortRange{
{IP: "10.99.0.2/32", Ports: tailcfg.PortRangeAny},
},
},
},
node: &types.Node{
ID: 1,
IPv4: ap("100.64.0.1"),
Hostname: "router",
User: types.User{Name: "router"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: []netip.Prefix{netip.MustParsePrefix("10.99.0.0/16")},
},
ApprovedRoutes: []netip.Prefix{netip.MustParsePrefix("10.99.0.0/16")},
},
},
want: []*types.Node{
{
ID: 2,
IPv4: ap("100.64.0.2"),
Hostname: "node",
User: types.User{Name: "node"},
},
},
},
{
name: "node-to-subnet-router-with-only-route-smaller-mask-2181",
args: args{
nodes: []*types.Node{
{
ID: 1,
IPv4: ap("100.64.0.1"),
Hostname: "router",
User: types.User{Name: "router"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: []netip.Prefix{netip.MustParsePrefix("10.99.0.0/16")},
},
ApprovedRoutes: []netip.Prefix{netip.MustParsePrefix("10.99.0.0/16")},
},
{
ID: 2,
IPv4: ap("100.64.0.2"),
Hostname: "node",
User: types.User{Name: "node"},
},
},
rules: []tailcfg.FilterRule{
{
SrcIPs: []string{
"100.64.0.2/32",
},
DstPorts: []tailcfg.NetPortRange{
{IP: "10.99.0.2/32", Ports: tailcfg.PortRangeAny},
},
},
},
node: &types.Node{
ID: 2,
IPv4: ap("100.64.0.2"),
Hostname: "node",
User: types.User{Name: "node"},
},
},
want: []*types.Node{
{
ID: 1,
IPv4: ap("100.64.0.1"),
Hostname: "router",
User: types.User{Name: "router"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: []netip.Prefix{netip.MustParsePrefix("10.99.0.0/16")},
},
ApprovedRoutes: []netip.Prefix{netip.MustParsePrefix("10.99.0.0/16")},
},
},
},
}
for _, tt := range tests {