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headscale/hscontrol/policy/acls_test.go

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package policy
import (
"errors"
"net/netip"
"slices"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/juanfont/headscale/hscontrol/types"
"github.com/juanfont/headscale/hscontrol/util"
"github.com/rs/zerolog/log"
"github.com/spf13/viper"
"github.com/stretchr/testify/assert"
"go4.org/netipx"
"gopkg.in/check.v1"
"tailscale.com/net/tsaddr"
"tailscale.com/tailcfg"
)
var iap = func(ipStr string) *netip.Addr {
ip := netip.MustParseAddr(ipStr)
return &ip
}
func Test(t *testing.T) {
check.TestingT(t)
}
var _ = check.Suite(&Suite{})
type Suite struct{}
func (s *Suite) TestWrongPath(c *check.C) {
_, err := LoadACLPolicyFromPath("asdfg")
c.Assert(err, check.NotNil)
}
func TestParsing(t *testing.T) {
tests := []struct {
name string
format string
acl string
want []tailcfg.FilterRule
wantErr bool
}{
{
name: "invalid-hujson",
format: "hujson",
acl: `
{
`,
want: []tailcfg.FilterRule{},
wantErr: true,
},
{
name: "valid-hujson-invalid-content",
format: "hujson",
acl: `
{
"valid_json": true,
"but_a_policy_though": false
}
`,
want: []tailcfg.FilterRule{},
wantErr: true,
},
{
name: "invalid-cidr",
format: "hujson",
acl: `
{"example-host-1": "100.100.100.100/42"}
`,
want: []tailcfg.FilterRule{},
wantErr: true,
},
{
name: "basic-rule",
format: "hujson",
acl: `
{
"hosts": {
"host-1": "100.100.100.100",
"subnet-1": "100.100.101.100/24",
},
"acls": [
{
"action": "accept",
"src": [
"subnet-1",
"192.168.1.0/24"
],
"dst": [
"*:22,3389",
"host-1:*",
],
},
],
}
`,
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"100.100.101.0/24", "192.168.1.0/24"},
DstPorts: []tailcfg.NetPortRange{
{IP: "0.0.0.0/0", Ports: tailcfg.PortRange{First: 22, Last: 22}},
{IP: "0.0.0.0/0", Ports: tailcfg.PortRange{First: 3389, Last: 3389}},
{IP: "::/0", Ports: tailcfg.PortRange{First: 22, Last: 22}},
{IP: "::/0", Ports: tailcfg.PortRange{First: 3389, Last: 3389}},
{IP: "100.100.100.100/32", Ports: tailcfg.PortRangeAny},
},
},
},
wantErr: false,
},
{
name: "parse-protocol",
format: "hujson",
acl: `
{
"hosts": {
"host-1": "100.100.100.100",
"subnet-1": "100.100.101.100/24",
},
"acls": [
{
"Action": "accept",
"src": [
"*",
],
"proto": "tcp",
"dst": [
"host-1:*",
],
},
{
"Action": "accept",
"src": [
"*",
],
"proto": "udp",
"dst": [
"host-1:53",
],
},
{
"Action": "accept",
"src": [
"*",
],
"proto": "icmp",
"dst": [
"host-1:*",
],
},
],
}`,
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"0.0.0.0/0", "::/0"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.100.100.100/32", Ports: tailcfg.PortRangeAny},
},
IPProto: []int{protocolTCP},
},
{
SrcIPs: []string{"0.0.0.0/0", "::/0"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.100.100.100/32", Ports: tailcfg.PortRange{First: 53, Last: 53}},
},
IPProto: []int{protocolUDP},
},
{
SrcIPs: []string{"0.0.0.0/0", "::/0"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.100.100.100/32", Ports: tailcfg.PortRangeAny},
},
IPProto: []int{protocolICMP, protocolIPv6ICMP},
},
},
wantErr: false,
},
{
name: "port-wildcard",
format: "hujson",
acl: `
{
"hosts": {
"host-1": "100.100.100.100",
"subnet-1": "100.100.101.100/24",
},
"acls": [
{
"Action": "accept",
"src": [
"*",
],
"dst": [
"host-1:*",
],
},
],
}
`,
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"0.0.0.0/0", "::/0"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.100.100.100/32", Ports: tailcfg.PortRangeAny},
},
},
},
wantErr: false,
},
{
name: "port-range",
format: "hujson",
acl: `
{
"hosts": {
"host-1": "100.100.100.100",
"subnet-1": "100.100.101.100/24",
},
"acls": [
{
"action": "accept",
"src": [
"subnet-1",
],
"dst": [
"host-1:5400-5500",
],
},
],
}
`,
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"100.100.101.0/24"},
DstPorts: []tailcfg.NetPortRange{
{
IP: "100.100.100.100/32",
Ports: tailcfg.PortRange{First: 5400, Last: 5500},
},
},
},
},
wantErr: false,
},
{
name: "port-group",
format: "hujson",
acl: `
{
"groups": {
"group:example": [
"testuser",
],
},
"hosts": {
"host-1": "100.100.100.100",
"subnet-1": "100.100.101.100/24",
},
"acls": [
{
"action": "accept",
"src": [
"group:example",
],
"dst": [
"host-1:*",
],
},
],
}
`,
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"200.200.200.200/32"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.100.100.100/32", Ports: tailcfg.PortRangeAny},
},
},
},
wantErr: false,
},
{
name: "port-user",
format: "hujson",
acl: `
{
"hosts": {
"host-1": "100.100.100.100",
"subnet-1": "100.100.101.100/24",
},
"acls": [
{
"action": "accept",
"src": [
"testuser",
],
"dst": [
"host-1:*",
],
},
],
}
`,
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"200.200.200.200/32"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.100.100.100/32", Ports: tailcfg.PortRangeAny},
},
},
},
wantErr: false,
},
{
name: "ipv6",
format: "hujson",
acl: `
{
"hosts": {
"host-1": "100.100.100.100/32",
"subnet-1": "100.100.101.100/24",
},
"acls": [
{
"action": "accept",
"src": [
"*",
],
"dst": [
"host-1:*",
],
},
],
}
`,
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"0.0.0.0/0", "::/0"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.100.100.100/32", Ports: tailcfg.PortRangeAny},
},
},
},
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
pol, err := LoadACLPolicyFromBytes([]byte(tt.acl))
if tt.wantErr && err == nil {
t.Errorf("parsing() error = %v, wantErr %v", err, tt.wantErr)
return
} else if !tt.wantErr && err != nil {
t.Errorf("parsing() error = %v, wantErr %v", err, tt.wantErr)
return
}
if err != nil {
return
}
rules, err := pol.CompileFilterRules(types.Nodes{
&types.Node{
IPv4: iap("100.100.100.100"),
},
&types.Node{
IPv4: iap("200.200.200.200"),
User: types.User{
Name: "testuser",
},
Hostinfo: &tailcfg.Hostinfo{},
},
})
if (err != nil) != tt.wantErr {
t.Errorf("parsing() error = %v, wantErr %v", err, tt.wantErr)
return
}
if diff := cmp.Diff(tt.want, rules); diff != "" {
t.Errorf("parsing() unexpected result (-want +got):\n%s", diff)
}
})
}
}
func (s *Suite) TestRuleInvalidGeneration(c *check.C) {
acl := []byte(`
{
// Declare static groups of users beyond those in the identity service.
"groups": {
"group:example": [
"user1@example.com",
"user2@example.com",
],
},
// Declare hostname aliases to use in place of IP addresses or subnets.
"hosts": {
"example-host-1": "100.100.100.100",
"example-host-2": "100.100.101.100/24",
},
// Define who is allowed to use which tags.
"tagOwners": {
// Everyone in the montreal-admins or global-admins group are
// allowed to tag servers as montreal-webserver.
"tag:montreal-webserver": [
"group:montreal-admins",
"group:global-admins",
],
// Only a few admins are allowed to create API servers.
"tag:api-server": [
"group:global-admins",
"example-host-1",
],
},
// Access control lists.
"acls": [
// Engineering users, plus the president, can access port 22 (ssh)
// and port 3389 (remote desktop protocol) on all servers, and all
// ports on git-server or ci-server.
{
"action": "accept",
"src": [
"group:engineering",
"president@example.com"
],
"dst": [
"*:22,3389",
"git-server:*",
"ci-server:*"
],
},
// Allow engineer users to access any port on a device tagged with
// tag:production.
{
"action": "accept",
"src": [
"group:engineers"
],
"dst": [
"tag:production:*"
],
},
// Allow servers in the my-subnet host and 192.168.1.0/24 to access hosts
// on both networks.
{
"action": "accept",
"src": [
"my-subnet",
"192.168.1.0/24"
],
"dst": [
"my-subnet:*",
"192.168.1.0/24:*"
],
},
// Allow every user of your network to access anything on the network.
// Comment out this section if you want to define specific ACL
// restrictions above.
{
"action": "accept",
"src": [
"*"
],
"dst": [
"*:*"
],
},
// All users in Montreal are allowed to access the Montreal web
// servers.
{
"action": "accept",
"src": [
"group:montreal-users"
],
"dst": [
"tag:montreal-webserver:80,443"
],
},
// Montreal web servers are allowed to make outgoing connections to
// the API servers, but only on https port 443.
// In contrast, this doesn't grant API servers the right to initiate
// any connections.
{
"action": "accept",
"src": [
"tag:montreal-webserver"
],
"dst": [
"tag:api-server:443"
],
},
],
// Declare tests to check functionality of ACL rules
"tests": [
{
"src": "user1@example.com",
"accept": [
"example-host-1:22",
"example-host-2:80"
],
"deny": [
"example-host-2:100"
],
},
{
"src": "user2@example.com",
"accept": [
"100.60.3.4:22"
],
},
],
}
`)
pol, err := LoadACLPolicyFromBytes(acl)
c.Assert(pol.ACLs, check.HasLen, 6)
c.Assert(err, check.IsNil)
rules, err := pol.CompileFilterRules(types.Nodes{})
c.Assert(err, check.NotNil)
c.Assert(rules, check.IsNil)
}
// TODO(kradalby): Make tests values safe, independent and descriptive.
func (s *Suite) TestInvalidAction(c *check.C) {
pol := &ACLPolicy{
ACLs: []ACL{
{
Action: "invalidAction",
Sources: []string{"*"},
Destinations: []string{"*:*"},
},
},
}
_, _, err := GenerateFilterAndSSHRulesForTests(pol, &types.Node{}, types.Nodes{})
c.Assert(errors.Is(err, ErrInvalidAction), check.Equals, true)
}
func (s *Suite) TestInvalidGroupInGroup(c *check.C) {
// this ACL is wrong because the group in Sources sections doesn't exist
pol := &ACLPolicy{
Groups: Groups{
"group:test": []string{"foo"},
"group:error": []string{"foo", "group:test"},
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"group:error"},
Destinations: []string{"*:*"},
},
},
}
_, _, err := GenerateFilterAndSSHRulesForTests(pol, &types.Node{}, types.Nodes{})
c.Assert(errors.Is(err, ErrInvalidGroup), check.Equals, true)
}
func (s *Suite) TestInvalidTagOwners(c *check.C) {
// this ACL is wrong because no tagOwners own the requested tag for the server
pol := &ACLPolicy{
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"tag:foo"},
Destinations: []string{"*:*"},
},
},
}
_, _, err := GenerateFilterAndSSHRulesForTests(pol, &types.Node{}, types.Nodes{})
c.Assert(errors.Is(err, ErrInvalidTag), check.Equals, true)
}
func Test_expandGroup(t *testing.T) {
type field struct {
pol ACLPolicy
}
type args struct {
group string
stripEmail bool
}
tests := []struct {
name string
field field
args args
want []string
wantErr bool
}{
{
name: "simple test",
field: field{
pol: ACLPolicy{
Groups: Groups{
"group:test": []string{"user1", "user2", "user3"},
"group:foo": []string{"user2", "user3"},
},
},
},
args: args{
group: "group:test",
},
want: []string{"user1", "user2", "user3"},
wantErr: false,
},
{
name: "InexistentGroup",
field: field{
pol: ACLPolicy{
Groups: Groups{
"group:test": []string{"user1", "user2", "user3"},
"group:foo": []string{"user2", "user3"},
},
},
},
args: args{
group: "group:undefined",
},
want: []string{},
wantErr: true,
},
{
name: "Expand emails in group",
field: field{
pol: ACLPolicy{
Groups: Groups{
"group:admin": []string{
"joe.bar@gmail.com",
"john.doe@yahoo.fr",
},
},
},
},
args: args{
group: "group:admin",
},
want: []string{"joe.bar@gmail.com", "john.doe@yahoo.fr"},
wantErr: false,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
viper.Set("oidc.strip_email_domain", test.args.stripEmail)
got, err := test.field.pol.expandUsersFromGroup(
test.args.group,
)
if (err != nil) != test.wantErr {
t.Errorf("expandGroup() error = %v, wantErr %v", err, test.wantErr)
return
}
if diff := cmp.Diff(test.want, got); diff != "" {
t.Errorf("expandGroup() unexpected result (-want +got):\n%s", diff)
}
})
}
}
func Test_expandTagOwners(t *testing.T) {
type args struct {
aclPolicy *ACLPolicy
tag string
}
tests := []struct {
name string
args args
want []string
wantErr bool
}{
{
name: "simple tag expansion",
args: args{
aclPolicy: &ACLPolicy{
TagOwners: TagOwners{"tag:test": []string{"user1"}},
},
tag: "tag:test",
},
want: []string{"user1"},
wantErr: false,
},
{
name: "expand with tag and group",
args: args{
aclPolicy: &ACLPolicy{
Groups: Groups{"group:foo": []string{"user1", "user2"}},
TagOwners: TagOwners{"tag:test": []string{"group:foo"}},
},
tag: "tag:test",
},
want: []string{"user1", "user2"},
wantErr: false,
},
{
name: "expand with user and group",
args: args{
aclPolicy: &ACLPolicy{
Groups: Groups{"group:foo": []string{"user1", "user2"}},
TagOwners: TagOwners{"tag:test": []string{"group:foo", "user3"}},
},
tag: "tag:test",
},
want: []string{"user1", "user2", "user3"},
wantErr: false,
},
{
name: "invalid tag",
args: args{
aclPolicy: &ACLPolicy{
TagOwners: TagOwners{"tag:foo": []string{"group:foo", "user1"}},
},
tag: "tag:test",
},
want: []string{},
wantErr: true,
},
{
name: "invalid group",
args: args{
aclPolicy: &ACLPolicy{
Groups: Groups{"group:bar": []string{"user1", "user2"}},
TagOwners: TagOwners{"tag:test": []string{"group:foo", "user2"}},
},
tag: "tag:test",
},
want: []string{},
wantErr: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
got, err := expandOwnersFromTag(
test.args.aclPolicy,
test.args.tag,
)
if (err != nil) != test.wantErr {
t.Errorf("expandTagOwners() error = %v, wantErr %v", err, test.wantErr)
return
}
if diff := cmp.Diff(test.want, got); diff != "" {
t.Errorf("expandTagOwners() = (-want +got):\n%s", diff)
}
})
}
}
func Test_expandPorts(t *testing.T) {
type args struct {
portsStr string
needsWildcard bool
}
tests := []struct {
name string
args args
want *[]tailcfg.PortRange
wantErr bool
}{
{
name: "wildcard",
args: args{portsStr: "*", needsWildcard: true},
want: &[]tailcfg.PortRange{
{First: portRangeBegin, Last: portRangeEnd},
},
wantErr: false,
},
{
name: "needs wildcard but does not require it",
args: args{portsStr: "*", needsWildcard: false},
want: &[]tailcfg.PortRange{
{First: portRangeBegin, Last: portRangeEnd},
},
wantErr: false,
},
{
name: "needs wildcard but gets port",
args: args{portsStr: "80,443", needsWildcard: true},
want: nil,
wantErr: true,
},
{
name: "two Destinations",
args: args{portsStr: "80,443", needsWildcard: false},
want: &[]tailcfg.PortRange{
{First: 80, Last: 80},
{First: 443, Last: 443},
},
wantErr: false,
},
{
name: "a range and a port",
args: args{portsStr: "80-1024,443", needsWildcard: false},
want: &[]tailcfg.PortRange{
{First: 80, Last: 1024},
{First: 443, Last: 443},
},
wantErr: false,
},
{
name: "out of bounds",
args: args{portsStr: "854038", needsWildcard: false},
want: nil,
wantErr: true,
},
{
name: "wrong port",
args: args{portsStr: "85a38", needsWildcard: false},
want: nil,
wantErr: true,
},
{
name: "wrong port in first",
args: args{portsStr: "a-80", needsWildcard: false},
want: nil,
wantErr: true,
},
{
name: "wrong port in last",
args: args{portsStr: "80-85a38", needsWildcard: false},
want: nil,
wantErr: true,
},
{
name: "wrong port format",
args: args{portsStr: "80-85a38-3", needsWildcard: false},
want: nil,
wantErr: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
got, err := expandPorts(test.args.portsStr, test.args.needsWildcard)
if (err != nil) != test.wantErr {
t.Errorf("expandPorts() error = %v, wantErr %v", err, test.wantErr)
return
}
if diff := cmp.Diff(test.want, got); diff != "" {
t.Errorf("expandPorts() = (-want +got):\n%s", diff)
}
})
}
}
func Test_listNodesInUser(t *testing.T) {
type args struct {
nodes types.Nodes
user string
}
tests := []struct {
name string
args args
want types.Nodes
}{
{
name: "1 node in user",
args: args{
nodes: types.Nodes{
&types.Node{User: types.User{Name: "joe"}},
},
user: "joe",
},
want: types.Nodes{
&types.Node{User: types.User{Name: "joe"}},
},
},
{
name: "3 nodes, 2 in user",
args: args{
nodes: types.Nodes{
&types.Node{ID: 1, User: types.User{Name: "joe"}},
&types.Node{ID: 2, User: types.User{Name: "marc"}},
&types.Node{ID: 3, User: types.User{Name: "marc"}},
},
user: "marc",
},
want: types.Nodes{
&types.Node{ID: 2, User: types.User{Name: "marc"}},
&types.Node{ID: 3, User: types.User{Name: "marc"}},
},
},
{
name: "5 nodes, 0 in user",
args: args{
nodes: types.Nodes{
&types.Node{ID: 1, User: types.User{Name: "joe"}},
&types.Node{ID: 2, User: types.User{Name: "marc"}},
&types.Node{ID: 3, User: types.User{Name: "marc"}},
&types.Node{ID: 4, User: types.User{Name: "marc"}},
&types.Node{ID: 5, User: types.User{Name: "marc"}},
},
user: "mickael",
},
want: nil,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
got := filterNodesByUser(test.args.nodes, test.args.user)
if diff := cmp.Diff(test.want, got, util.Comparers...); diff != "" {
t.Errorf("listNodesInUser() = (-want +got):\n%s", diff)
}
})
}
}
func Test_expandAlias(t *testing.T) {
set := func(ips []string, prefixes []string) *netipx.IPSet {
var builder netipx.IPSetBuilder
for _, ip := range ips {
builder.Add(netip.MustParseAddr(ip))
}
for _, pre := range prefixes {
builder.AddPrefix(netip.MustParsePrefix(pre))
}
s, _ := builder.IPSet()
return s
}
type field struct {
pol ACLPolicy
}
type args struct {
nodes types.Nodes
aclPolicy ACLPolicy
alias string
}
tests := []struct {
name string
field field
args args
want *netipx.IPSet
wantErr bool
}{
{
name: "wildcard",
field: field{
pol: ACLPolicy{},
},
args: args{
alias: "*",
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
},
&types.Node{
IPv4: iap("100.78.84.227"),
},
},
},
want: set([]string{}, []string{
"0.0.0.0/0",
"::/0",
}),
wantErr: false,
},
{
name: "simple group",
field: field{
pol: ACLPolicy{
Groups: Groups{"group:accountant": []string{"joe", "marc"}},
},
},
args: args{
alias: "group:accountant",
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
},
&types.Node{
IPv4: iap("100.64.0.3"),
User: types.User{Name: "marc"},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "mickael"},
},
},
},
want: set([]string{
"100.64.0.1", "100.64.0.2", "100.64.0.3",
}, []string{}),
wantErr: false,
},
{
name: "wrong group",
field: field{
pol: ACLPolicy{
Groups: Groups{"group:accountant": []string{"joe", "marc"}},
},
},
args: args{
alias: "group:hr",
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
},
&types.Node{
IPv4: iap("100.64.0.3"),
User: types.User{Name: "marc"},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "mickael"},
},
},
},
want: set([]string{}, []string{}),
wantErr: true,
},
{
name: "simple ipaddress",
field: field{
pol: ACLPolicy{},
},
args: args{
alias: "10.0.0.3",
nodes: types.Nodes{},
},
want: set([]string{
"10.0.0.3",
}, []string{}),
wantErr: false,
},
{
name: "simple host by ip passed through",
field: field{
pol: ACLPolicy{},
},
args: args{
alias: "10.0.0.1",
nodes: types.Nodes{},
},
want: set([]string{
"10.0.0.1",
}, []string{}),
wantErr: false,
},
{
name: "simple host by ipv4 single ipv4",
field: field{
pol: ACLPolicy{},
},
args: args{
alias: "10.0.0.1",
nodes: types.Nodes{
&types.Node{
IPv4: iap("10.0.0.1"),
User: types.User{Name: "mickael"},
},
},
},
want: set([]string{
"10.0.0.1",
}, []string{}),
wantErr: false,
},
{
name: "simple host by ipv4 single dual stack",
field: field{
pol: ACLPolicy{},
},
args: args{
alias: "10.0.0.1",
nodes: types.Nodes{
&types.Node{
IPv4: iap("10.0.0.1"),
IPv6: iap("fd7a:115c:a1e0:ab12:4843:2222:6273:2222"),
User: types.User{Name: "mickael"},
},
},
},
want: set([]string{
"10.0.0.1", "fd7a:115c:a1e0:ab12:4843:2222:6273:2222",
}, []string{}),
wantErr: false,
},
{
name: "simple host by ipv6 single dual stack",
field: field{
pol: ACLPolicy{},
},
args: args{
alias: "fd7a:115c:a1e0:ab12:4843:2222:6273:2222",
nodes: types.Nodes{
&types.Node{
IPv4: iap("10.0.0.1"),
IPv6: iap("fd7a:115c:a1e0:ab12:4843:2222:6273:2222"),
User: types.User{Name: "mickael"},
},
},
},
want: set([]string{
"fd7a:115c:a1e0:ab12:4843:2222:6273:2222", "10.0.0.1",
}, []string{}),
wantErr: false,
},
{
name: "simple host by hostname alias",
field: field{
pol: ACLPolicy{
Hosts: Hosts{
"testy": netip.MustParsePrefix("10.0.0.132/32"),
},
},
},
args: args{
alias: "testy",
nodes: types.Nodes{},
},
want: set([]string{}, []string{"10.0.0.132/32"}),
wantErr: false,
},
{
name: "private network",
field: field{
pol: ACLPolicy{
Hosts: Hosts{
"homeNetwork": netip.MustParsePrefix("192.168.1.0/24"),
},
},
},
args: args{
alias: "homeNetwork",
nodes: types.Nodes{},
},
want: set([]string{}, []string{"192.168.1.0/24"}),
wantErr: false,
},
{
name: "simple CIDR",
field: field{
pol: ACLPolicy{},
},
args: args{
alias: "10.0.0.0/16",
nodes: types.Nodes{},
aclPolicy: ACLPolicy{},
},
want: set([]string{}, []string{"10.0.0.0/16"}),
wantErr: false,
},
{
name: "simple tag",
field: field{
pol: ACLPolicy{
TagOwners: TagOwners{"tag:hr-webserver": []string{"joe"}},
},
},
args: args{
alias: "tag:hr-webserver",
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:hr-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:hr-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.3"),
User: types.User{Name: "marc"},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
},
},
},
want: set([]string{
"100.64.0.1", "100.64.0.2",
}, []string{}),
wantErr: false,
},
{
name: "No tag defined",
field: field{
pol: ACLPolicy{
Groups: Groups{"group:accountant": []string{"joe", "marc"}},
TagOwners: TagOwners{
"tag:accountant-webserver": []string{"group:accountant"},
},
},
},
args: args{
alias: "tag:hr-webserver",
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
},
&types.Node{
IPv4: iap("100.64.0.3"),
User: types.User{Name: "marc"},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "mickael"},
},
},
},
want: set([]string{}, []string{}),
wantErr: true,
},
{
name: "Forced tag defined",
field: field{
pol: ACLPolicy{},
},
args: args{
alias: "tag:hr-webserver",
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
ForcedTags: []string{"tag:hr-webserver"},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
ForcedTags: []string{"tag:hr-webserver"},
},
&types.Node{
IPv4: iap("100.64.0.3"),
User: types.User{Name: "marc"},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "mickael"},
},
},
},
want: set([]string{"100.64.0.1", "100.64.0.2"}, []string{}),
wantErr: false,
},
{
name: "Forced tag with legitimate tagOwner",
field: field{
pol: ACLPolicy{
TagOwners: TagOwners{
"tag:hr-webserver": []string{"joe"},
},
},
},
args: args{
alias: "tag:hr-webserver",
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
ForcedTags: []string{"tag:hr-webserver"},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:hr-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.3"),
User: types.User{Name: "marc"},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "mickael"},
},
},
},
want: set([]string{"100.64.0.1", "100.64.0.2"}, []string{}),
wantErr: false,
},
{
name: "list host in user without correctly tagged servers",
field: field{
pol: ACLPolicy{
TagOwners: TagOwners{"tag:accountant-webserver": []string{"joe"}},
},
},
args: args{
alias: "joe",
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:accountant-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:accountant-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.3"),
User: types.User{Name: "marc"},
Hostinfo: &tailcfg.Hostinfo{},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{},
},
},
},
want: set([]string{"100.64.0.4"}, []string{}),
wantErr: false,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
got, err := test.field.pol.ExpandAlias(
test.args.nodes,
test.args.alias,
)
if (err != nil) != test.wantErr {
t.Errorf("expandAlias() error = %v, wantErr %v", err, test.wantErr)
return
}
if diff := cmp.Diff(test.want, got); diff != "" {
t.Errorf("expandAlias() unexpected result (-want +got):\n%s", diff)
}
})
}
}
func Test_excludeCorrectlyTaggedNodes(t *testing.T) {
type args struct {
aclPolicy *ACLPolicy
nodes types.Nodes
user string
}
tests := []struct {
name string
args args
want types.Nodes
wantErr bool
}{
{
name: "exclude nodes with valid tags",
args: args{
aclPolicy: &ACLPolicy{
TagOwners: TagOwners{"tag:accountant-webserver": []string{"joe"}},
},
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:accountant-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:accountant-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{},
},
},
user: "joe",
},
want: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{},
},
},
},
{
name: "exclude nodes with valid tags, and owner is in a group",
args: args{
aclPolicy: &ACLPolicy{
Groups: Groups{
"group:accountant": []string{"joe", "bar"},
},
TagOwners: TagOwners{
"tag:accountant-webserver": []string{"group:accountant"},
},
},
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:accountant-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:accountant-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{},
},
},
user: "joe",
},
want: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{},
},
},
},
{
name: "exclude nodes with valid tags and with forced tags",
args: args{
aclPolicy: &ACLPolicy{
TagOwners: TagOwners{"tag:accountant-webserver": []string{"joe"}},
},
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "foo",
RequestTags: []string{"tag:accountant-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
ForcedTags: []string{"tag:accountant-webserver"},
Hostinfo: &tailcfg.Hostinfo{},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{},
},
},
user: "joe",
},
want: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{},
},
},
},
{
name: "all nodes have invalid tags, don't exclude them",
args: args{
aclPolicy: &ACLPolicy{
TagOwners: TagOwners{"tag:accountant-webserver": []string{"joe"}},
},
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "hr-web1",
RequestTags: []string{"tag:hr-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "hr-web2",
RequestTags: []string{"tag:hr-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{},
},
},
user: "joe",
},
want: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "hr-web1",
RequestTags: []string{"tag:hr-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.2"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{
OS: "centos",
Hostname: "hr-web2",
RequestTags: []string{"tag:hr-webserver"},
},
},
&types.Node{
IPv4: iap("100.64.0.4"),
User: types.User{Name: "joe"},
Hostinfo: &tailcfg.Hostinfo{},
},
},
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
got := excludeCorrectlyTaggedNodes(
test.args.aclPolicy,
test.args.nodes,
test.args.user,
)
if diff := cmp.Diff(test.want, got, util.Comparers...); diff != "" {
t.Errorf("excludeCorrectlyTaggedNodes() (-want +got):\n%s", diff)
}
})
}
}
func TestACLPolicy_generateFilterRules(t *testing.T) {
type field struct {
pol ACLPolicy
}
type args struct {
nodes types.Nodes
}
tests := []struct {
name string
field field
args args
want []tailcfg.FilterRule
wantErr bool
}{
{
name: "no-policy",
field: field{},
args: args{},
want: nil,
wantErr: false,
},
{
name: "allow-all",
field: field{
pol: ACLPolicy{
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"*:*"},
},
},
},
},
args: args{
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0:ab12:4843:2222:6273:2221"),
},
},
},
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"0.0.0.0/0", "::/0"},
DstPorts: []tailcfg.NetPortRange{
{
IP: "0.0.0.0/0",
Ports: tailcfg.PortRange{
First: 0,
Last: 65535,
},
},
{
IP: "::/0",
Ports: tailcfg.PortRange{
First: 0,
Last: 65535,
},
},
},
},
},
wantErr: false,
},
{
name: "host1-can-reach-host2-full",
field: field{
pol: ACLPolicy{
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"100.64.0.2"},
Destinations: []string{"100.64.0.1:*"},
},
},
},
},
args: args{
nodes: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0:ab12:4843:2222:6273:2221"),
User: types.User{Name: "mickael"},
},
&types.Node{
IPv4: iap("100.64.0.2"),
IPv6: iap("fd7a:115c:a1e0:ab12:4843:2222:6273:2222"),
User: types.User{Name: "mickael"},
},
},
},
want: []tailcfg.FilterRule{
{
SrcIPs: []string{
"100.64.0.2/32",
"fd7a:115c:a1e0:ab12:4843:2222:6273:2222/128",
},
DstPorts: []tailcfg.NetPortRange{
{
IP: "100.64.0.1/32",
Ports: tailcfg.PortRange{
First: 0,
Last: 65535,
},
},
{
IP: "fd7a:115c:a1e0:ab12:4843:2222:6273:2221/128",
Ports: tailcfg.PortRange{
First: 0,
Last: 65535,
},
},
},
},
},
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := tt.field.pol.CompileFilterRules(
tt.args.nodes,
)
if (err != nil) != tt.wantErr {
t.Errorf("ACLgenerateFilterRules() error = %v, wantErr %v", err, tt.wantErr)
return
}
if diff := cmp.Diff(tt.want, got); diff != "" {
log.Trace().Interface("got", got).Msg("result")
t.Errorf("ACLgenerateFilterRules() unexpected result (-want +got):\n%s", diff)
}
})
}
}
// tsExitNodeDest is the list of destination IP ranges that are allowed when
// you dump the filter list from a Tailscale node connected to Tailscale SaaS.
var tsExitNodeDest = []tailcfg.NetPortRange{
{
IP: "0.0.0.0-9.255.255.255",
Ports: tailcfg.PortRangeAny,
},
{
IP: "11.0.0.0-100.63.255.255",
Ports: tailcfg.PortRangeAny,
},
{
IP: "100.128.0.0-169.253.255.255",
Ports: tailcfg.PortRangeAny,
},
{
IP: "169.255.0.0-172.15.255.255",
Ports: tailcfg.PortRangeAny,
},
{
IP: "172.32.0.0-192.167.255.255",
Ports: tailcfg.PortRangeAny,
},
{
IP: "192.169.0.0-255.255.255.255",
Ports: tailcfg.PortRangeAny,
},
{
IP: "2000::-3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
Ports: tailcfg.PortRangeAny,
},
}
// hsExitNodeDest is the list of destination IP ranges that are allowed when
// we use headscale "autogroup:internet".
var hsExitNodeDest = []tailcfg.NetPortRange{
{IP: "0.0.0.0/5", Ports: tailcfg.PortRangeAny},
{IP: "8.0.0.0/7", Ports: tailcfg.PortRangeAny},
{IP: "11.0.0.0/8", Ports: tailcfg.PortRangeAny},
{IP: "12.0.0.0/6", Ports: tailcfg.PortRangeAny},
{IP: "16.0.0.0/4", Ports: tailcfg.PortRangeAny},
{IP: "32.0.0.0/3", Ports: tailcfg.PortRangeAny},
{IP: "64.0.0.0/3", Ports: tailcfg.PortRangeAny},
{IP: "96.0.0.0/6", Ports: tailcfg.PortRangeAny},
{IP: "100.0.0.0/10", Ports: tailcfg.PortRangeAny},
{IP: "100.128.0.0/9", Ports: tailcfg.PortRangeAny},
{IP: "101.0.0.0/8", Ports: tailcfg.PortRangeAny},
{IP: "102.0.0.0/7", Ports: tailcfg.PortRangeAny},
{IP: "104.0.0.0/5", Ports: tailcfg.PortRangeAny},
{IP: "112.0.0.0/4", Ports: tailcfg.PortRangeAny},
{IP: "128.0.0.0/3", Ports: tailcfg.PortRangeAny},
{IP: "160.0.0.0/5", Ports: tailcfg.PortRangeAny},
{IP: "168.0.0.0/8", Ports: tailcfg.PortRangeAny},
{IP: "169.0.0.0/9", Ports: tailcfg.PortRangeAny},
{IP: "169.128.0.0/10", Ports: tailcfg.PortRangeAny},
{IP: "169.192.0.0/11", Ports: tailcfg.PortRangeAny},
{IP: "169.224.0.0/12", Ports: tailcfg.PortRangeAny},
{IP: "169.240.0.0/13", Ports: tailcfg.PortRangeAny},
{IP: "169.248.0.0/14", Ports: tailcfg.PortRangeAny},
{IP: "169.252.0.0/15", Ports: tailcfg.PortRangeAny},
{IP: "169.255.0.0/16", Ports: tailcfg.PortRangeAny},
{IP: "170.0.0.0/7", Ports: tailcfg.PortRangeAny},
{IP: "172.0.0.0/12", Ports: tailcfg.PortRangeAny},
{IP: "172.32.0.0/11", Ports: tailcfg.PortRangeAny},
{IP: "172.64.0.0/10", Ports: tailcfg.PortRangeAny},
{IP: "172.128.0.0/9", Ports: tailcfg.PortRangeAny},
{IP: "173.0.0.0/8", Ports: tailcfg.PortRangeAny},
{IP: "174.0.0.0/7", Ports: tailcfg.PortRangeAny},
{IP: "176.0.0.0/4", Ports: tailcfg.PortRangeAny},
{IP: "192.0.0.0/9", Ports: tailcfg.PortRangeAny},
{IP: "192.128.0.0/11", Ports: tailcfg.PortRangeAny},
{IP: "192.160.0.0/13", Ports: tailcfg.PortRangeAny},
{IP: "192.169.0.0/16", Ports: tailcfg.PortRangeAny},
{IP: "192.170.0.0/15", Ports: tailcfg.PortRangeAny},
{IP: "192.172.0.0/14", Ports: tailcfg.PortRangeAny},
{IP: "192.176.0.0/12", Ports: tailcfg.PortRangeAny},
{IP: "192.192.0.0/10", Ports: tailcfg.PortRangeAny},
{IP: "193.0.0.0/8", Ports: tailcfg.PortRangeAny},
{IP: "194.0.0.0/7", Ports: tailcfg.PortRangeAny},
{IP: "196.0.0.0/6", Ports: tailcfg.PortRangeAny},
{IP: "200.0.0.0/5", Ports: tailcfg.PortRangeAny},
{IP: "208.0.0.0/4", Ports: tailcfg.PortRangeAny},
{IP: "224.0.0.0/3", Ports: tailcfg.PortRangeAny},
{IP: "2000::/3", Ports: tailcfg.PortRangeAny},
}
func TestTheInternet(t *testing.T) {
internetSet := theInternet()
internetPrefs := internetSet.Prefixes()
for i := range internetPrefs {
if internetPrefs[i].String() != hsExitNodeDest[i].IP {
t.Errorf("prefix from internet set %q != hsExit list %q", internetPrefs[i].String(), hsExitNodeDest[i].IP)
}
}
if len(internetPrefs) != len(hsExitNodeDest) {
t.Fatalf("expected same length of prefixes, internet: %d, hsExit: %d", len(internetPrefs), len(hsExitNodeDest))
}
}
func TestReduceFilterRules(t *testing.T) {
tests := []struct {
name string
node *types.Node
peers types.Nodes
pol ACLPolicy
want []tailcfg.FilterRule
}{
{
name: "host1-can-reach-host2-no-rules",
pol: ACLPolicy{
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"100.64.0.1"},
Destinations: []string{"100.64.0.2:*"},
},
},
},
node: &types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0:ab12:4843:2222:6273:2221"),
User: types.User{Name: "mickael"},
},
peers: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.2"),
IPv6: iap("fd7a:115c:a1e0:ab12:4843:2222:6273:2222"),
User: types.User{Name: "mickael"},
},
},
want: []tailcfg.FilterRule{},
},
{
name: "1604-subnet-routers-are-preserved",
pol: ACLPolicy{
Groups: Groups{
"group:admins": {"user1"},
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"group:admins"},
Destinations: []string{"group:admins:*"},
},
{
Action: "accept",
Sources: []string{"group:admins"},
Destinations: []string{"10.33.0.0/16:*"},
},
},
},
node: &types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0::1"),
User: types.User{Name: "user1"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: []netip.Prefix{
netip.MustParsePrefix("10.33.0.0/16"),
},
},
},
peers: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.2"),
IPv6: iap("fd7a:115c:a1e0::2"),
User: types.User{Name: "user1"},
},
},
want: []tailcfg.FilterRule{
{
SrcIPs: []string{
"100.64.0.1/32",
"100.64.0.2/32",
"fd7a:115c:a1e0::1/128",
"fd7a:115c:a1e0::2/128",
},
DstPorts: []tailcfg.NetPortRange{
{
IP: "100.64.0.1/32",
Ports: tailcfg.PortRangeAny,
},
{
IP: "fd7a:115c:a1e0::1/128",
Ports: tailcfg.PortRangeAny,
},
},
},
{
SrcIPs: []string{
"100.64.0.1/32",
"100.64.0.2/32",
"fd7a:115c:a1e0::1/128",
"fd7a:115c:a1e0::2/128",
},
DstPorts: []tailcfg.NetPortRange{
{
IP: "10.33.0.0/16",
Ports: tailcfg.PortRangeAny,
},
},
},
},
},
{
name: "1786-reducing-breaks-exit-nodes-the-client",
pol: ACLPolicy{
Hosts: Hosts{
// Exit node
"internal": netip.MustParsePrefix("100.64.0.100/32"),
},
Groups: Groups{
"group:team": {"user3", "user2", "user1"},
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"internal:*",
},
},
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"autogroup:internet:*",
},
},
},
},
node: &types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0::1"),
User: types.User{Name: "user1"},
},
peers: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.2"),
IPv6: iap("fd7a:115c:a1e0::2"),
User: types.User{Name: "user2"},
},
// "internal" exit node
&types.Node{
IPv4: iap("100.64.0.100"),
IPv6: iap("fd7a:115c:a1e0::100"),
User: types.User{Name: "user100"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: tsaddr.ExitRoutes(),
},
},
},
want: []tailcfg.FilterRule{},
},
{
name: "1786-reducing-breaks-exit-nodes-the-exit",
pol: ACLPolicy{
Hosts: Hosts{
// Exit node
"internal": netip.MustParsePrefix("100.64.0.100/32"),
},
Groups: Groups{
"group:team": {"user3", "user2", "user1"},
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"internal:*",
},
},
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"autogroup:internet:*",
},
},
},
},
node: &types.Node{
IPv4: iap("100.64.0.100"),
IPv6: iap("fd7a:115c:a1e0::100"),
User: types.User{Name: "user100"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: tsaddr.ExitRoutes(),
},
},
peers: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.2"),
IPv6: iap("fd7a:115c:a1e0::2"),
User: types.User{Name: "user2"},
},
&types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0::1"),
User: types.User{Name: "user1"},
},
},
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"100.64.0.1/32", "100.64.0.2/32", "fd7a:115c:a1e0::1/128", "fd7a:115c:a1e0::2/128"},
DstPorts: []tailcfg.NetPortRange{
{
IP: "100.64.0.100/32",
Ports: tailcfg.PortRangeAny,
},
{
IP: "fd7a:115c:a1e0::100/128",
Ports: tailcfg.PortRangeAny,
},
},
},
{
SrcIPs: []string{"100.64.0.1/32", "100.64.0.2/32", "fd7a:115c:a1e0::1/128", "fd7a:115c:a1e0::2/128"},
DstPorts: hsExitNodeDest,
},
},
},
{
name: "1786-reducing-breaks-exit-nodes-the-example-from-issue",
pol: ACLPolicy{
Hosts: Hosts{
// Exit node
"internal": netip.MustParsePrefix("100.64.0.100/32"),
},
Groups: Groups{
"group:team": {"user3", "user2", "user1"},
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"internal:*",
},
},
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"0.0.0.0/5:*",
"8.0.0.0/7:*",
"11.0.0.0/8:*",
"12.0.0.0/6:*",
"16.0.0.0/4:*",
"32.0.0.0/3:*",
"64.0.0.0/2:*",
"128.0.0.0/3:*",
"160.0.0.0/5:*",
"168.0.0.0/6:*",
"172.0.0.0/12:*",
"172.32.0.0/11:*",
"172.64.0.0/10:*",
"172.128.0.0/9:*",
"173.0.0.0/8:*",
"174.0.0.0/7:*",
"176.0.0.0/4:*",
"192.0.0.0/9:*",
"192.128.0.0/11:*",
"192.160.0.0/13:*",
"192.169.0.0/16:*",
"192.170.0.0/15:*",
"192.172.0.0/14:*",
"192.176.0.0/12:*",
"192.192.0.0/10:*",
"193.0.0.0/8:*",
"194.0.0.0/7:*",
"196.0.0.0/6:*",
"200.0.0.0/5:*",
"208.0.0.0/4:*",
},
},
},
},
node: &types.Node{
IPv4: iap("100.64.0.100"),
IPv6: iap("fd7a:115c:a1e0::100"),
User: types.User{Name: "user100"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: tsaddr.ExitRoutes(),
},
},
peers: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.2"),
IPv6: iap("fd7a:115c:a1e0::2"),
User: types.User{Name: "user2"},
},
&types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0::1"),
User: types.User{Name: "user1"},
},
},
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"100.64.0.1/32", "100.64.0.2/32", "fd7a:115c:a1e0::1/128", "fd7a:115c:a1e0::2/128"},
DstPorts: []tailcfg.NetPortRange{
{
IP: "100.64.0.100/32",
Ports: tailcfg.PortRangeAny,
},
{
IP: "fd7a:115c:a1e0::100/128",
Ports: tailcfg.PortRangeAny,
},
},
},
{
SrcIPs: []string{"100.64.0.1/32", "100.64.0.2/32", "fd7a:115c:a1e0::1/128", "fd7a:115c:a1e0::2/128"},
DstPorts: []tailcfg.NetPortRange{
{IP: "0.0.0.0/5", Ports: tailcfg.PortRangeAny},
{IP: "8.0.0.0/7", Ports: tailcfg.PortRangeAny},
{IP: "11.0.0.0/8", Ports: tailcfg.PortRangeAny},
{IP: "12.0.0.0/6", Ports: tailcfg.PortRangeAny},
{IP: "16.0.0.0/4", Ports: tailcfg.PortRangeAny},
{IP: "32.0.0.0/3", Ports: tailcfg.PortRangeAny},
{IP: "64.0.0.0/2", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::1/128", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::2/128", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::100/128", Ports: tailcfg.PortRangeAny},
{IP: "128.0.0.0/3", Ports: tailcfg.PortRangeAny},
{IP: "160.0.0.0/5", Ports: tailcfg.PortRangeAny},
{IP: "168.0.0.0/6", Ports: tailcfg.PortRangeAny},
{IP: "172.0.0.0/12", Ports: tailcfg.PortRangeAny},
{IP: "172.32.0.0/11", Ports: tailcfg.PortRangeAny},
{IP: "172.64.0.0/10", Ports: tailcfg.PortRangeAny},
{IP: "172.128.0.0/9", Ports: tailcfg.PortRangeAny},
{IP: "173.0.0.0/8", Ports: tailcfg.PortRangeAny},
{IP: "174.0.0.0/7", Ports: tailcfg.PortRangeAny},
{IP: "176.0.0.0/4", Ports: tailcfg.PortRangeAny},
{IP: "192.0.0.0/9", Ports: tailcfg.PortRangeAny},
{IP: "192.128.0.0/11", Ports: tailcfg.PortRangeAny},
{IP: "192.160.0.0/13", Ports: tailcfg.PortRangeAny},
{IP: "192.169.0.0/16", Ports: tailcfg.PortRangeAny},
{IP: "192.170.0.0/15", Ports: tailcfg.PortRangeAny},
{IP: "192.172.0.0/14", Ports: tailcfg.PortRangeAny},
{IP: "192.176.0.0/12", Ports: tailcfg.PortRangeAny},
{IP: "192.192.0.0/10", Ports: tailcfg.PortRangeAny},
{IP: "193.0.0.0/8", Ports: tailcfg.PortRangeAny},
{IP: "194.0.0.0/7", Ports: tailcfg.PortRangeAny},
{IP: "196.0.0.0/6", Ports: tailcfg.PortRangeAny},
{IP: "200.0.0.0/5", Ports: tailcfg.PortRangeAny},
{IP: "208.0.0.0/4", Ports: tailcfg.PortRangeAny},
},
},
},
},
{
name: "1786-reducing-breaks-exit-nodes-app-connector-like",
pol: ACLPolicy{
Hosts: Hosts{
// Exit node
"internal": netip.MustParsePrefix("100.64.0.100/32"),
},
Groups: Groups{
"group:team": {"user3", "user2", "user1"},
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"internal:*",
},
},
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"8.0.0.0/8:*",
"16.0.0.0/8:*",
},
},
},
},
node: &types.Node{
IPv4: iap("100.64.0.100"),
IPv6: iap("fd7a:115c:a1e0::100"),
User: types.User{Name: "user100"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: []netip.Prefix{netip.MustParsePrefix("8.0.0.0/16"), netip.MustParsePrefix("16.0.0.0/16")},
},
},
peers: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.2"),
IPv6: iap("fd7a:115c:a1e0::2"),
User: types.User{Name: "user2"},
},
&types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0::1"),
User: types.User{Name: "user1"},
},
},
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"100.64.0.1/32", "100.64.0.2/32", "fd7a:115c:a1e0::1/128", "fd7a:115c:a1e0::2/128"},
DstPorts: []tailcfg.NetPortRange{
{
IP: "100.64.0.100/32",
Ports: tailcfg.PortRangeAny,
},
{
IP: "fd7a:115c:a1e0::100/128",
Ports: tailcfg.PortRangeAny,
},
},
},
{
SrcIPs: []string{"100.64.0.1/32", "100.64.0.2/32", "fd7a:115c:a1e0::1/128", "fd7a:115c:a1e0::2/128"},
DstPorts: []tailcfg.NetPortRange{
{
IP: "8.0.0.0/8",
Ports: tailcfg.PortRangeAny,
},
{
IP: "16.0.0.0/8",
Ports: tailcfg.PortRangeAny,
},
},
},
},
},
{
name: "1786-reducing-breaks-exit-nodes-app-connector-like2",
pol: ACLPolicy{
Hosts: Hosts{
// Exit node
"internal": netip.MustParsePrefix("100.64.0.100/32"),
},
Groups: Groups{
"group:team": {"user3", "user2", "user1"},
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"internal:*",
},
},
{
Action: "accept",
Sources: []string{"group:team"},
Destinations: []string{
"8.0.0.0/16:*",
"16.0.0.0/16:*",
},
},
},
},
node: &types.Node{
IPv4: iap("100.64.0.100"),
IPv6: iap("fd7a:115c:a1e0::100"),
User: types.User{Name: "user100"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: []netip.Prefix{netip.MustParsePrefix("8.0.0.0/8"), netip.MustParsePrefix("16.0.0.0/8")},
},
},
peers: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.2"),
IPv6: iap("fd7a:115c:a1e0::2"),
User: types.User{Name: "user2"},
},
&types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0::1"),
User: types.User{Name: "user1"},
},
},
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"100.64.0.1/32", "100.64.0.2/32", "fd7a:115c:a1e0::1/128", "fd7a:115c:a1e0::2/128"},
DstPorts: []tailcfg.NetPortRange{
{
IP: "100.64.0.100/32",
Ports: tailcfg.PortRangeAny,
},
{
IP: "fd7a:115c:a1e0::100/128",
Ports: tailcfg.PortRangeAny,
},
},
},
{
SrcIPs: []string{"100.64.0.1/32", "100.64.0.2/32", "fd7a:115c:a1e0::1/128", "fd7a:115c:a1e0::2/128"},
DstPorts: []tailcfg.NetPortRange{
{
IP: "8.0.0.0/16",
Ports: tailcfg.PortRangeAny,
},
{
IP: "16.0.0.0/16",
Ports: tailcfg.PortRangeAny,
},
},
},
},
},
{
name: "1817-reduce-breaks-32-mask",
pol: ACLPolicy{
Hosts: Hosts{
"vlan1": netip.MustParsePrefix("172.16.0.0/24"),
"dns1": netip.MustParsePrefix("172.16.0.21/32"),
},
Groups: Groups{
"group:access": {"user1"},
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"group:access"},
Destinations: []string{
"tag:access-servers:*",
"dns1:*",
},
},
},
},
node: &types.Node{
IPv4: iap("100.64.0.100"),
IPv6: iap("fd7a:115c:a1e0::100"),
User: types.User{Name: "user100"},
Hostinfo: &tailcfg.Hostinfo{
RoutableIPs: []netip.Prefix{netip.MustParsePrefix("172.16.0.0/24")},
},
ForcedTags: []string{"tag:access-servers"},
},
peers: types.Nodes{
&types.Node{
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0::1"),
User: types.User{Name: "user1"},
},
},
want: []tailcfg.FilterRule{
{
SrcIPs: []string{"100.64.0.1/32", "fd7a:115c:a1e0::1/128"},
DstPorts: []tailcfg.NetPortRange{
{
IP: "100.64.0.100/32",
Ports: tailcfg.PortRangeAny,
},
{
IP: "fd7a:115c:a1e0::100/128",
Ports: tailcfg.PortRangeAny,
},
{
IP: "172.16.0.21/32",
Ports: tailcfg.PortRangeAny,
},
},
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, _ := tt.pol.CompileFilterRules(
append(tt.peers, tt.node),
)
got = ReduceFilterRules(tt.node, got)
if diff := cmp.Diff(tt.want, got); diff != "" {
log.Trace().Interface("got", got).Msg("result")
t.Errorf("TestReduceFilterRules() unexpected result (-want +got):\n%s", diff)
}
})
}
}
func Test_getTags(t *testing.T) {
type args struct {
aclPolicy *ACLPolicy
node *types.Node
}
tests := []struct {
name string
args args
wantInvalid []string
wantValid []string
}{
{
name: "valid tag one nodes",
args: args{
aclPolicy: &ACLPolicy{
TagOwners: TagOwners{
"tag:valid": []string{"joe"},
},
},
node: &types.Node{
User: types.User{
Name: "joe",
},
Hostinfo: &tailcfg.Hostinfo{
RequestTags: []string{"tag:valid"},
},
},
},
wantValid: []string{"tag:valid"},
wantInvalid: nil,
},
{
name: "invalid tag and valid tag one nodes",
args: args{
aclPolicy: &ACLPolicy{
TagOwners: TagOwners{
"tag:valid": []string{"joe"},
},
},
node: &types.Node{
User: types.User{
Name: "joe",
},
Hostinfo: &tailcfg.Hostinfo{
RequestTags: []string{"tag:valid", "tag:invalid"},
},
},
},
wantValid: []string{"tag:valid"},
wantInvalid: []string{"tag:invalid"},
},
{
name: "multiple invalid and identical tags, should return only one invalid tag",
args: args{
aclPolicy: &ACLPolicy{
TagOwners: TagOwners{
"tag:valid": []string{"joe"},
},
},
node: &types.Node{
User: types.User{
Name: "joe",
},
Hostinfo: &tailcfg.Hostinfo{
RequestTags: []string{
"tag:invalid",
"tag:valid",
"tag:invalid",
},
},
},
},
wantValid: []string{"tag:valid"},
wantInvalid: []string{"tag:invalid"},
},
{
name: "only invalid tags",
args: args{
aclPolicy: &ACLPolicy{
TagOwners: TagOwners{
"tag:valid": []string{"joe"},
},
},
node: &types.Node{
User: types.User{
Name: "joe",
},
Hostinfo: &tailcfg.Hostinfo{
RequestTags: []string{"tag:invalid", "very-invalid"},
},
},
},
wantValid: nil,
wantInvalid: []string{"tag:invalid", "very-invalid"},
},
{
name: "empty ACLPolicy should return empty tags and should not panic",
args: args{
aclPolicy: &ACLPolicy{},
node: &types.Node{
User: types.User{
Name: "joe",
},
Hostinfo: &tailcfg.Hostinfo{
RequestTags: []string{"tag:invalid", "very-invalid"},
},
},
},
wantValid: nil,
wantInvalid: []string{"tag:invalid", "very-invalid"},
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
gotValid, gotInvalid := test.args.aclPolicy.TagsOfNode(
test.args.node,
)
for _, valid := range gotValid {
if !slices.Contains(test.wantValid, valid) {
t.Errorf(
"valids: getTags() = %v, want %v",
gotValid,
test.wantValid,
)
break
}
}
for _, invalid := range gotInvalid {
if !slices.Contains(test.wantInvalid, invalid) {
t.Errorf(
"invalids: getTags() = %v, want %v",
gotInvalid,
test.wantInvalid,
)
break
}
}
})
}
}
func Test_getFilteredByACLPeers(t *testing.T) {
type args struct {
nodes types.Nodes
rules []tailcfg.FilterRule
node *types.Node
}
tests := []struct {
name string
args args
want types.Nodes
}{
{
name: "all hosts can talk to each other",
args: args{
nodes: types.Nodes{ // list of all nodes in the database
&types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
rules: []tailcfg.FilterRule{ // list of all ACLRules registered
{
SrcIPs: []string{"100.64.0.1", "100.64.0.2", "100.64.0.3"},
DstPorts: []tailcfg.NetPortRange{
{IP: "*"},
},
},
},
node: &types.Node{ // current nodes
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
},
want: types.Nodes{
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
},
{
name: "One host can talk to another, but not all hosts",
args: args{
nodes: types.Nodes{ // list of all nodes in the database
&types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
rules: []tailcfg.FilterRule{ // list of all ACLRules registered
{
SrcIPs: []string{"100.64.0.1", "100.64.0.2", "100.64.0.3"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.2"},
},
},
},
node: &types.Node{ // current nodes
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
},
want: types.Nodes{
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
},
},
{
name: "host cannot directly talk to destination, but return path is authorized",
args: args{
nodes: types.Nodes{ // list of all nodes in the database
&types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
rules: []tailcfg.FilterRule{ // list of all ACLRules registered
{
SrcIPs: []string{"100.64.0.3"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.2"},
},
},
},
node: &types.Node{ // current nodes
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
},
want: types.Nodes{
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
},
{
name: "rules allows all hosts to reach one destination",
args: args{
nodes: types.Nodes{ // list of all nodes in the database
&types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
rules: []tailcfg.FilterRule{ // list of all ACLRules registered
{
SrcIPs: []string{"*"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.2"},
},
},
},
node: &types.Node{ // current nodes
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
},
want: types.Nodes{
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
},
},
{
name: "rules allows all hosts to reach one destination, destination can reach all hosts",
args: args{
nodes: types.Nodes{ // list of all nodes in the database
&types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
rules: []tailcfg.FilterRule{ // list of all ACLRules registered
{
SrcIPs: []string{"*"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.2"},
},
},
},
node: &types.Node{ // current nodes
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
},
want: types.Nodes{
&types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
},
{
name: "rule allows all hosts to reach all destinations",
args: args{
nodes: types.Nodes{ // list of all nodes in the database
&types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
rules: []tailcfg.FilterRule{ // list of all ACLRules registered
{
SrcIPs: []string{"*"},
DstPorts: []tailcfg.NetPortRange{
{IP: "*"},
},
},
},
node: &types.Node{ // current nodes
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
},
want: types.Nodes{
&types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
},
{
name: "without rule all communications are forbidden",
args: args{
nodes: types.Nodes{ // list of all nodes in the database
&types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
User: types.User{Name: "joe"},
},
&types.Node{
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
&types.Node{
ID: 3,
IPv4: iap("100.64.0.3"),
User: types.User{Name: "mickael"},
},
},
rules: []tailcfg.FilterRule{ // list of all ACLRules registered
},
node: &types.Node{ // current nodes
ID: 2,
IPv4: iap("100.64.0.2"),
User: types.User{Name: "marc"},
},
},
want: nil,
},
{
// Investigating 699
// Found some nodes: [ts-head-8w6paa ts-unstable-lys2ib ts-head-upcrmb ts-unstable-rlwpvr] nodes=ts-head-8w6paa
// ACL rules generated ACL=[{"DstPorts":[{"Bits":null,"IP":"*","Ports":{"First":0,"Last":65535}}],"SrcIPs":["fd7a:115c:a1e0::3","100.64.0.3","fd7a:115c:a1e0::4","100.64.0.4"]}]
// ACL Cache Map={"100.64.0.3":{"*":{}},"100.64.0.4":{"*":{}},"fd7a:115c:a1e0::3":{"*":{}},"fd7a:115c:a1e0::4":{"*":{}}}
name: "issue-699-broken-star",
args: args{
nodes: types.Nodes{ //
&types.Node{
ID: 1,
Hostname: "ts-head-upcrmb",
IPv4: iap("100.64.0.3"),
IPv6: iap("fd7a:115c:a1e0::3"),
User: types.User{Name: "user1"},
},
&types.Node{
ID: 2,
Hostname: "ts-unstable-rlwpvr",
IPv4: iap("100.64.0.4"),
IPv6: iap("fd7a:115c:a1e0::4"),
User: types.User{Name: "user1"},
},
&types.Node{
ID: 3,
Hostname: "ts-head-8w6paa",
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0::1"),
User: types.User{Name: "user2"},
},
&types.Node{
ID: 4,
Hostname: "ts-unstable-lys2ib",
IPv4: iap("100.64.0.2"),
IPv6: iap("fd7a:115c:a1e0::2"),
User: types.User{Name: "user2"},
},
},
rules: []tailcfg.FilterRule{ // list of all ACLRules registered
{
DstPorts: []tailcfg.NetPortRange{
{
IP: "*",
Ports: tailcfg.PortRange{First: 0, Last: 65535},
},
},
SrcIPs: []string{
"fd7a:115c:a1e0::3", "100.64.0.3",
"fd7a:115c:a1e0::4", "100.64.0.4",
},
},
},
node: &types.Node{ // current nodes
ID: 3,
Hostname: "ts-head-8w6paa",
IPv4: iap("100.64.0.1"),
IPv6: iap("fd7a:115c:a1e0::1"),
User: types.User{Name: "user2"},
},
},
want: types.Nodes{
&types.Node{
ID: 1,
Hostname: "ts-head-upcrmb",
IPv4: iap("100.64.0.3"),
IPv6: iap("fd7a:115c:a1e0::3"),
User: types.User{Name: "user1"},
},
&types.Node{
ID: 2,
Hostname: "ts-unstable-rlwpvr",
IPv4: iap("100.64.0.4"),
IPv6: iap("fd7a:115c:a1e0::4"),
User: types.User{Name: "user1"},
},
},
},
{
name: "failing-edge-case-during-p3-refactor",
args: args{
nodes: []*types.Node{
{
ID: 1,
IPv4: iap("100.64.0.2"),
Hostname: "peer1",
User: types.User{Name: "mini"},
},
{
ID: 2,
IPv4: iap("100.64.0.3"),
Hostname: "peer2",
User: types.User{Name: "peer2"},
},
},
rules: []tailcfg.FilterRule{
{
SrcIPs: []string{"100.64.0.1/32"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.3/32", Ports: tailcfg.PortRangeAny},
{IP: "::/0", Ports: tailcfg.PortRangeAny},
},
},
},
node: &types.Node{
ID: 0,
IPv4: iap("100.64.0.1"),
Hostname: "mini",
User: types.User{Name: "mini"},
},
},
want: []*types.Node{
{
ID: 2,
IPv4: iap("100.64.0.3"),
Hostname: "peer2",
User: types.User{Name: "peer2"},
},
},
},
{
name: "p4-host-in-netmap-user2-dest-bug",
args: args{
nodes: []*types.Node{
{
ID: 1,
IPv4: iap("100.64.0.2"),
Hostname: "user1-2",
User: types.User{Name: "user1"},
},
{
ID: 0,
IPv4: iap("100.64.0.1"),
Hostname: "user1-1",
User: types.User{Name: "user1"},
},
{
ID: 3,
IPv4: iap("100.64.0.4"),
Hostname: "user2-2",
User: types.User{Name: "user2"},
},
},
rules: []tailcfg.FilterRule{
{
SrcIPs: []string{
"100.64.0.3/32",
"100.64.0.4/32",
"fd7a:115c:a1e0::3/128",
"fd7a:115c:a1e0::4/128",
},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.3/32", Ports: tailcfg.PortRangeAny},
{IP: "100.64.0.4/32", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::3/128", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::4/128", Ports: tailcfg.PortRangeAny},
},
},
{
SrcIPs: []string{
"100.64.0.1/32",
"100.64.0.2/32",
"fd7a:115c:a1e0::1/128",
"fd7a:115c:a1e0::2/128",
},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.3/32", Ports: tailcfg.PortRangeAny},
{IP: "100.64.0.4/32", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::3/128", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::4/128", Ports: tailcfg.PortRangeAny},
},
},
},
node: &types.Node{
ID: 2,
IPv4: iap("100.64.0.3"),
Hostname: "user-2-1",
User: types.User{Name: "user2"},
},
},
want: []*types.Node{
{
ID: 1,
IPv4: iap("100.64.0.2"),
Hostname: "user1-2",
User: types.User{Name: "user1"},
},
{
ID: 0,
IPv4: iap("100.64.0.1"),
Hostname: "user1-1",
User: types.User{Name: "user1"},
},
{
ID: 3,
IPv4: iap("100.64.0.4"),
Hostname: "user2-2",
User: types.User{Name: "user2"},
},
},
},
{
name: "p4-host-in-netmap-user1-dest-bug",
args: args{
nodes: []*types.Node{
{
ID: 1,
IPv4: iap("100.64.0.2"),
Hostname: "user1-2",
User: types.User{Name: "user1"},
},
{
ID: 2,
IPv4: iap("100.64.0.3"),
Hostname: "user-2-1",
User: types.User{Name: "user2"},
},
{
ID: 3,
IPv4: iap("100.64.0.4"),
Hostname: "user2-2",
User: types.User{Name: "user2"},
},
},
rules: []tailcfg.FilterRule{
{
SrcIPs: []string{
"100.64.0.1/32",
"100.64.0.2/32",
"fd7a:115c:a1e0::1/128",
"fd7a:115c:a1e0::2/128",
},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.1/32", Ports: tailcfg.PortRangeAny},
{IP: "100.64.0.2/32", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::1/128", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::2/128", Ports: tailcfg.PortRangeAny},
},
},
{
SrcIPs: []string{
"100.64.0.1/32",
"100.64.0.2/32",
"fd7a:115c:a1e0::1/128",
"fd7a:115c:a1e0::2/128",
},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.3/32", Ports: tailcfg.PortRangeAny},
{IP: "100.64.0.4/32", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::3/128", Ports: tailcfg.PortRangeAny},
{IP: "fd7a:115c:a1e0::4/128", Ports: tailcfg.PortRangeAny},
},
},
},
node: &types.Node{
ID: 0,
IPv4: iap("100.64.0.1"),
Hostname: "user1-1",
User: types.User{Name: "user1"},
},
},
want: []*types.Node{
{
ID: 1,
IPv4: iap("100.64.0.2"),
Hostname: "user1-2",
User: types.User{Name: "user1"},
},
{
ID: 2,
IPv4: iap("100.64.0.3"),
Hostname: "user-2-1",
User: types.User{Name: "user2"},
},
{
ID: 3,
IPv4: iap("100.64.0.4"),
Hostname: "user2-2",
User: types.User{Name: "user2"},
},
},
},
{
name: "subnet-router-with-only-route",
args: args{
nodes: []*types.Node{
{
ID: 1,
IPv4: iap("100.64.0.1"),
Hostname: "user1",
User: types.User{Name: "user1"},
},
{
ID: 2,
IPv4: iap("100.64.0.2"),
Hostname: "router",
User: types.User{Name: "router"},
Routes: types.Routes{
types.Route{
NodeID: 2,
Prefix: netip.MustParsePrefix("10.33.0.0/16"),
IsPrimary: true,
Enabled: true,
},
},
},
},
rules: []tailcfg.FilterRule{
{
SrcIPs: []string{
"100.64.0.1/32",
},
DstPorts: []tailcfg.NetPortRange{
{IP: "10.33.0.0/16", Ports: tailcfg.PortRangeAny},
},
},
},
node: &types.Node{
ID: 1,
IPv4: iap("100.64.0.1"),
Hostname: "user1",
User: types.User{Name: "user1"},
},
},
want: []*types.Node{
{
ID: 2,
IPv4: iap("100.64.0.2"),
Hostname: "router",
User: types.User{Name: "router"},
Routes: types.Routes{
types.Route{
NodeID: 2,
Prefix: netip.MustParsePrefix("10.33.0.0/16"),
IsPrimary: true,
Enabled: true,
},
},
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := FilterNodesByACL(
tt.args.node,
tt.args.nodes,
tt.args.rules,
)
if diff := cmp.Diff(tt.want, got, util.Comparers...); diff != "" {
t.Errorf("FilterNodesByACL() unexpected result (-want +got):\n%s", diff)
}
})
}
}
func TestSSHRules(t *testing.T) {
tests := []struct {
name string
node types.Node
peers types.Nodes
pol ACLPolicy
want *tailcfg.SSHPolicy
}{
{
name: "peers-can-connect",
node: types.Node{
Hostname: "testnodes",
IPv4: iap("100.64.99.42"),
UserID: 0,
User: types.User{
Name: "user1",
},
},
peers: types.Nodes{
&types.Node{
Hostname: "testnodes2",
IPv4: iap("100.64.0.1"),
UserID: 0,
User: types.User{
Name: "user1",
},
},
},
pol: ACLPolicy{
Groups: Groups{
"group:test": []string{"user1"},
},
Hosts: Hosts{
"client": netip.PrefixFrom(netip.MustParseAddr("100.64.99.42"), 32),
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"*:*"},
},
},
SSHs: []SSH{
{
Action: "accept",
Sources: []string{"group:test"},
Destinations: []string{"client"},
Users: []string{"autogroup:nonroot"},
},
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"client"},
Users: []string{"autogroup:nonroot"},
},
{
Action: "accept",
Sources: []string{"group:test"},
Destinations: []string{"100.64.99.42"},
Users: []string{"autogroup:nonroot"},
},
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"100.64.99.42"},
Users: []string{"autogroup:nonroot"},
},
},
},
want: &tailcfg.SSHPolicy{Rules: []*tailcfg.SSHRule{
{
Principals: []*tailcfg.SSHPrincipal{
{
UserLogin: "user1",
},
},
SSHUsers: map[string]string{
"autogroup:nonroot": "=",
},
Action: &tailcfg.SSHAction{Accept: true, AllowAgentForwarding: true, AllowLocalPortForwarding: true},
},
{
SSHUsers: map[string]string{
"autogroup:nonroot": "=",
},
Principals: []*tailcfg.SSHPrincipal{
{
Any: true,
},
},
Action: &tailcfg.SSHAction{Accept: true, AllowAgentForwarding: true, AllowLocalPortForwarding: true},
},
{
Principals: []*tailcfg.SSHPrincipal{
{
UserLogin: "user1",
},
},
SSHUsers: map[string]string{
"autogroup:nonroot": "=",
},
Action: &tailcfg.SSHAction{Accept: true, AllowAgentForwarding: true, AllowLocalPortForwarding: true},
},
{
SSHUsers: map[string]string{
"autogroup:nonroot": "=",
},
Principals: []*tailcfg.SSHPrincipal{
{
Any: true,
},
},
Action: &tailcfg.SSHAction{Accept: true, AllowAgentForwarding: true, AllowLocalPortForwarding: true},
},
}},
},
{
name: "peers-cannot-connect",
node: types.Node{
Hostname: "testnodes",
IPv4: iap("100.64.0.1"),
UserID: 0,
User: types.User{
Name: "user1",
},
},
peers: types.Nodes{
&types.Node{
Hostname: "testnodes2",
IPv4: iap("100.64.99.42"),
UserID: 0,
User: types.User{
Name: "user1",
},
},
},
pol: ACLPolicy{
Groups: Groups{
"group:test": []string{"user1"},
},
Hosts: Hosts{
"client": netip.PrefixFrom(netip.MustParseAddr("100.64.99.42"), 32),
},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"*:*"},
},
},
SSHs: []SSH{
{
Action: "accept",
Sources: []string{"group:test"},
Destinations: []string{"100.64.99.42"},
Users: []string{"autogroup:nonroot"},
},
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"100.64.99.42"},
Users: []string{"autogroup:nonroot"},
},
},
},
want: &tailcfg.SSHPolicy{Rules: nil},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := tt.pol.CompileSSHPolicy(&tt.node, tt.peers)
assert.NoError(t, err)
if diff := cmp.Diff(tt.want, got); diff != "" {
t.Errorf("TestSSHRules() unexpected result (-want +got):\n%s", diff)
}
})
}
}
func TestParseDestination(t *testing.T) {
tests := []struct {
dest string
wantAlias string
wantPort string
}{
{
dest: "git-server:*",
wantAlias: "git-server",
wantPort: "*",
},
{
dest: "192.168.1.0/24:22",
wantAlias: "192.168.1.0/24",
wantPort: "22",
},
{
dest: "192.168.1.1:22",
wantAlias: "192.168.1.1",
wantPort: "22",
},
{
dest: "fd7a:115c:a1e0::2:22",
wantAlias: "fd7a:115c:a1e0::2",
wantPort: "22",
},
{
dest: "fd7a:115c:a1e0::2/128:22",
wantAlias: "fd7a:115c:a1e0::2/128",
wantPort: "22",
},
{
dest: "tag:montreal-webserver:80,443",
wantAlias: "tag:montreal-webserver",
wantPort: "80,443",
},
{
dest: "tag:api-server:443",
wantAlias: "tag:api-server",
wantPort: "443",
},
{
dest: "example-host-1:*",
wantAlias: "example-host-1",
wantPort: "*",
},
}
for _, tt := range tests {
t.Run(tt.dest, func(t *testing.T) {
alias, port, _ := parseDestination(tt.dest)
if alias != tt.wantAlias {
t.Errorf("unexpected alias: want(%s) != got(%s)", tt.wantAlias, alias)
}
if port != tt.wantPort {
t.Errorf("unexpected port: want(%s) != got(%s)", tt.wantPort, port)
}
})
}
}
// this test should validate that we can expand a group in a TagOWner section and
// match properly the IP's of the related hosts. The owner is valid and the tag is also valid.
// the tag is matched in the Sources section.
func TestValidExpandTagOwnersInSources(t *testing.T) {
hostInfo := tailcfg.Hostinfo{
OS: "centos",
Hostname: "testnodes",
RequestTags: []string{"tag:test"},
}
node := &types.Node{
ID: 0,
Hostname: "testnodes",
IPv4: iap("100.64.0.1"),
UserID: 0,
User: types.User{
Name: "user1",
},
RegisterMethod: util.RegisterMethodAuthKey,
Hostinfo: &hostInfo,
}
pol := &ACLPolicy{
Groups: Groups{"group:test": []string{"user1", "user2"}},
TagOwners: TagOwners{"tag:test": []string{"user3", "group:test"}},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"tag:test"},
Destinations: []string{"*:*"},
},
},
}
got, _, err := GenerateFilterAndSSHRulesForTests(pol, node, types.Nodes{})
assert.NoError(t, err)
want := []tailcfg.FilterRule{
{
SrcIPs: []string{"100.64.0.1/32"},
DstPorts: []tailcfg.NetPortRange{
{IP: "0.0.0.0/0", Ports: tailcfg.PortRange{Last: 65535}},
{IP: "::/0", Ports: tailcfg.PortRange{Last: 65535}},
},
},
}
if diff := cmp.Diff(want, got); diff != "" {
t.Errorf("TestValidExpandTagOwnersInSources() unexpected result (-want +got):\n%s", diff)
}
}
// need a test with:
// tag on a host that isn't owned by a tag owners. So the user
// of the host should be valid.
func TestInvalidTagValidUser(t *testing.T) {
hostInfo := tailcfg.Hostinfo{
OS: "centos",
Hostname: "testnodes",
RequestTags: []string{"tag:foo"},
}
node := &types.Node{
ID: 1,
Hostname: "testnodes",
IPv4: iap("100.64.0.1"),
UserID: 1,
User: types.User{
Name: "user1",
},
RegisterMethod: util.RegisterMethodAuthKey,
Hostinfo: &hostInfo,
}
pol := &ACLPolicy{
TagOwners: TagOwners{"tag:test": []string{"user1"}},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"user1"},
Destinations: []string{"*:*"},
},
},
}
got, _, err := GenerateFilterAndSSHRulesForTests(pol, node, types.Nodes{})
assert.NoError(t, err)
want := []tailcfg.FilterRule{
{
SrcIPs: []string{"100.64.0.1/32"},
DstPorts: []tailcfg.NetPortRange{
{IP: "0.0.0.0/0", Ports: tailcfg.PortRange{Last: 65535}},
{IP: "::/0", Ports: tailcfg.PortRange{Last: 65535}},
},
},
}
if diff := cmp.Diff(want, got); diff != "" {
t.Errorf("TestInvalidTagValidUser() unexpected result (-want +got):\n%s", diff)
}
}
// this test should validate that we can expand a group in a TagOWner section and
// match properly the IP's of the related hosts. The owner is valid and the tag is also valid.
// the tag is matched in the Destinations section.
func TestValidExpandTagOwnersInDestinations(t *testing.T) {
hostInfo := tailcfg.Hostinfo{
OS: "centos",
Hostname: "testnodes",
RequestTags: []string{"tag:test"},
}
node := &types.Node{
ID: 1,
Hostname: "testnodes",
IPv4: iap("100.64.0.1"),
UserID: 1,
User: types.User{
Name: "user1",
},
RegisterMethod: util.RegisterMethodAuthKey,
Hostinfo: &hostInfo,
}
pol := &ACLPolicy{
Groups: Groups{"group:test": []string{"user1", "user2"}},
TagOwners: TagOwners{"tag:test": []string{"user3", "group:test"}},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"tag:test:*"},
},
},
}
// rules, _, err := GenerateFilterRules(pol, &node, peers, false)
// c.Assert(err, check.IsNil)
//
// c.Assert(rules, check.HasLen, 1)
// c.Assert(rules[0].DstPorts, check.HasLen, 1)
// c.Assert(rules[0].DstPorts[0].IP, check.Equals, "100.64.0.1/32")
got, _, err := GenerateFilterAndSSHRulesForTests(pol, node, types.Nodes{})
assert.NoError(t, err)
want := []tailcfg.FilterRule{
{
SrcIPs: []string{"0.0.0.0/0", "::/0"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.1/32", Ports: tailcfg.PortRange{Last: 65535}},
},
},
}
if diff := cmp.Diff(want, got); diff != "" {
t.Errorf(
"TestValidExpandTagOwnersInDestinations() unexpected result (-want +got):\n%s",
diff,
)
}
}
// tag on a host is owned by a tag owner, the tag is valid.
// an ACL rule is matching the tag to a user. It should not be valid since the
// host should be tied to the tag now.
func TestValidTagInvalidUser(t *testing.T) {
hostInfo := tailcfg.Hostinfo{
OS: "centos",
Hostname: "webserver",
RequestTags: []string{"tag:webapp"},
}
node := &types.Node{
ID: 1,
Hostname: "webserver",
IPv4: iap("100.64.0.1"),
UserID: 1,
User: types.User{
Name: "user1",
},
RegisterMethod: util.RegisterMethodAuthKey,
Hostinfo: &hostInfo,
}
hostInfo2 := tailcfg.Hostinfo{
OS: "debian",
Hostname: "Hostname",
}
nodes2 := &types.Node{
ID: 2,
Hostname: "user",
IPv4: iap("100.64.0.2"),
UserID: 1,
User: types.User{
Name: "user1",
},
RegisterMethod: util.RegisterMethodAuthKey,
Hostinfo: &hostInfo2,
}
pol := &ACLPolicy{
TagOwners: TagOwners{"tag:webapp": []string{"user1"}},
ACLs: []ACL{
{
Action: "accept",
Sources: []string{"user1"},
Destinations: []string{"tag:webapp:80,443"},
},
},
}
got, _, err := GenerateFilterAndSSHRulesForTests(pol, node, types.Nodes{nodes2})
assert.NoError(t, err)
want := []tailcfg.FilterRule{
{
SrcIPs: []string{"100.64.0.2/32"},
DstPorts: []tailcfg.NetPortRange{
{IP: "100.64.0.1/32", Ports: tailcfg.PortRange{First: 80, Last: 80}},
{IP: "100.64.0.1/32", Ports: tailcfg.PortRange{First: 443, Last: 443}},
},
},
}
if diff := cmp.Diff(want, got); diff != "" {
t.Errorf("TestValidTagInvalidUser() unexpected result (-want +got):\n%s", diff)
}
}
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