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|
// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package ipnlocal
import (
"bytes"
"cmp"
"crypto/x509"
"encoding/json"
"net/http/httptest"
"net/url"
"os"
"path/filepath"
"reflect"
"strings"
"testing"
"time"
"tailscale.com/ipn/store/mem"
"tailscale.com/tailcfg"
"tailscale.com/tstest"
"tailscale.com/types/ipproto"
"tailscale.com/types/key"
"tailscale.com/types/logger"
"tailscale.com/types/netmap"
"tailscale.com/types/views"
"tailscale.com/util/must"
"tailscale.com/util/set"
"tailscale.com/wgengine/filter/filtertype"
gcmp "github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
)
func TestHandleC2NTLSCertStatus(t *testing.T) {
b := &LocalBackend{
store: &mem.Store{},
varRoot: t.TempDir(),
}
certDir, err := b.certDir()
if err != nil {
t.Fatalf("certDir error: %v", err)
}
if _, err := b.getCertStore(); err != nil {
t.Fatalf("getCertStore error: %v", err)
}
testRoot, err := certTestFS.ReadFile("testdata/rootCA.pem")
if err != nil {
t.Fatal(err)
}
roots := x509.NewCertPool()
if !roots.AppendCertsFromPEM(testRoot) {
t.Fatal("Unable to add test CA to the cert pool")
}
testX509Roots = roots
defer func() { testX509Roots = nil }()
tests := []struct {
name string
domain string
copyFile bool // copy testdata/example.com.pem to the certDir
wantStatus int // 0 means 200
wantError string // wanted non-JSON non-200 error
now time.Time
want *tailcfg.C2NTLSCertInfo
}{
{
name: "no domain",
wantStatus: 400,
wantError: "no 'domain'\n",
},
{
name: "missing",
domain: "example.com",
want: &tailcfg.C2NTLSCertInfo{
Error: "no certificate",
Missing: true,
},
},
{
name: "valid",
domain: "example.com",
now: time.Date(2023, time.February, 20, 0, 0, 0, 0, time.UTC),
copyFile: true,
want: &tailcfg.C2NTLSCertInfo{
Valid: true,
NotBefore: "2023-02-07T20:34:18Z",
NotAfter: "2025-05-07T19:34:18Z",
},
},
{
name: "expired",
domain: "example.com",
now: time.Date(2030, time.February, 20, 0, 0, 0, 0, time.UTC),
copyFile: true,
want: &tailcfg.C2NTLSCertInfo{
Error: "cert expired",
Expired: true,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
os.RemoveAll(certDir) // reset per test
if tt.copyFile {
os.MkdirAll(certDir, 0755)
if err := os.WriteFile(filepath.Join(certDir, "example.com.crt"),
must.Get(os.ReadFile("testdata/example.com.pem")), 0644); err != nil {
t.Fatal(err)
}
if err := os.WriteFile(filepath.Join(certDir, "example.com.key"),
must.Get(os.ReadFile("testdata/example.com-key.pem")), 0644); err != nil {
t.Fatal(err)
}
}
b.clock = tstest.NewClock(tstest.ClockOpts{
Start: tt.now,
})
rec := httptest.NewRecorder()
handleC2NTLSCertStatus(b, rec, httptest.NewRequest("GET", "/tls-cert-status?domain="+url.QueryEscape(tt.domain), nil))
res := rec.Result()
wantStatus := cmp.Or(tt.wantStatus, 200)
if res.StatusCode != wantStatus {
t.Fatalf("status code = %v; want %v. Body: %s", res.Status, wantStatus, rec.Body.Bytes())
}
if wantStatus == 200 {
var got tailcfg.C2NTLSCertInfo
if err := json.Unmarshal(rec.Body.Bytes(), &got); err != nil {
t.Fatalf("bad JSON: %v", err)
}
if !reflect.DeepEqual(&got, tt.want) {
t.Errorf("got %v; want %v", logger.AsJSON(got), logger.AsJSON(tt.want))
}
} else if tt.wantError != "" {
if got := rec.Body.String(); got != tt.wantError {
t.Errorf("body = %q; want %q", got, tt.wantError)
}
}
})
}
}
// eachStructField calls cb for each struct field in struct type tp, recursively.
func eachStructField(tp reflect.Type, cb func(reflect.Type, reflect.StructField)) {
if !strings.HasPrefix(tp.PkgPath(), "tailscale.com/") {
// Stop traversing when we reach a non-tailscale type.
return
}
for i := range tp.NumField() {
cb(tp, tp.Field(i))
switch tp.Field(i).Type.Kind() {
case reflect.Struct:
eachStructField(tp.Field(i).Type, cb)
case reflect.Slice, reflect.Array, reflect.Ptr, reflect.Map:
if tp.Field(i).Type.Elem().Kind() == reflect.Struct {
eachStructField(tp.Field(i).Type.Elem(), cb)
}
}
}
}
// eachStructValue calls cb for each struct field in the struct value v, recursively.
func eachStructValue(v reflect.Value, cb func(reflect.Type, reflect.StructField, reflect.Value)) {
if v.IsZero() {
return
}
for i := range v.NumField() {
cb(v.Type(), v.Type().Field(i), v.Field(i))
switch v.Type().Field(i).Type.Kind() {
case reflect.Struct:
eachStructValue(v.Field(i), cb)
case reflect.Slice, reflect.Array, reflect.Ptr, reflect.Map:
if v.Field(i).Type().Elem().Kind() == reflect.Struct {
eachStructValue(v.Field(i).Addr().Elem(), cb)
}
}
}
}
// TestRedactNetmapPrivateKeys tests that redactNetmapPrivateKeys redacts all private keys
// and other private fields from a netmap.NetworkMap, and only those fields.
func TestRedactNetmapPrivateKeys(t *testing.T) {
type field struct {
t reflect.Type
f string
}
f := func(t any, f string) field {
return field{reflect.TypeOf(t), f}
}
// fields is a map of all struct fields in netmap.NetworkMap and its
// sub-structs, marking each field as private (true) or public (false).
// If you add a new field to netmap.NetworkMap or its sub-structs,
// you must add it to this list, marking it as private or public.
fields := map[field]bool{
// Private fields to be redacted.
f(netmap.NetworkMap{}, "PrivateKey"): true,
// All other fields are public.
f(netmap.NetworkMap{}, "AllCaps"): false,
f(netmap.NetworkMap{}, "CollectServices"): false,
f(netmap.NetworkMap{}, "DERPMap"): false,
f(netmap.NetworkMap{}, "DNS"): false,
f(netmap.NetworkMap{}, "DisplayMessages"): false,
f(netmap.NetworkMap{}, "Domain"): false,
f(netmap.NetworkMap{}, "DomainAuditLogID"): false,
f(netmap.NetworkMap{}, "Expiry"): false,
f(netmap.NetworkMap{}, "MachineKey"): false,
f(netmap.NetworkMap{}, "Name"): false,
f(netmap.NetworkMap{}, "NodeKey"): false,
f(netmap.NetworkMap{}, "PacketFilter"): false,
f(netmap.NetworkMap{}, "PacketFilterRules"): false,
f(netmap.NetworkMap{}, "Peers"): false,
f(netmap.NetworkMap{}, "SSHPolicy"): false,
f(netmap.NetworkMap{}, "SelfNode"): false,
f(netmap.NetworkMap{}, "TKAEnabled"): false,
f(netmap.NetworkMap{}, "TKAHead"): false,
f(netmap.NetworkMap{}, "UserProfiles"): false,
f(filtertype.CapMatch{}, "Cap"): false,
f(filtertype.CapMatch{}, "Dst"): false,
f(filtertype.CapMatch{}, "Values"): false,
f(filtertype.Match{}, "Caps"): false,
f(filtertype.Match{}, "Dsts"): false,
f(filtertype.Match{}, "IPProto"): false,
f(filtertype.Match{}, "SrcCaps"): false,
f(filtertype.Match{}, "Srcs"): false,
f(filtertype.Match{}, "SrcsContains"): false,
f(filtertype.NetPortRange{}, "Net"): false,
f(filtertype.NetPortRange{}, "Ports"): false,
f(filtertype.PortRange{}, "First"): false,
f(filtertype.PortRange{}, "Last"): false,
f(key.DiscoPublic{}, "k"): false,
f(key.MachinePublic{}, "k"): false,
f(key.NodePrivate{}, "_"): false,
f(key.NodePrivate{}, "k"): false,
f(key.NodePublic{}, "k"): false,
f(tailcfg.CapGrant{}, "CapMap"): false,
f(tailcfg.CapGrant{}, "Caps"): false,
f(tailcfg.CapGrant{}, "Dsts"): false,
f(tailcfg.DERPHomeParams{}, "RegionScore"): false,
f(tailcfg.DERPMap{}, "HomeParams"): false,
f(tailcfg.DERPMap{}, "OmitDefaultRegions"): false,
f(tailcfg.DERPMap{}, "Regions"): false,
f(tailcfg.DNSConfig{}, "CertDomains"): false,
f(tailcfg.DNSConfig{}, "Domains"): false,
f(tailcfg.DNSConfig{}, "ExitNodeFilteredSet"): false,
f(tailcfg.DNSConfig{}, "ExtraRecords"): false,
f(tailcfg.DNSConfig{}, "FallbackResolvers"): false,
f(tailcfg.DNSConfig{}, "Nameservers"): false,
f(tailcfg.DNSConfig{}, "Proxied"): false,
f(tailcfg.DNSConfig{}, "Resolvers"): false,
f(tailcfg.DNSConfig{}, "Routes"): false,
f(tailcfg.DNSConfig{}, "TempCorpIssue13969"): false,
f(tailcfg.DNSRecord{}, "Name"): false,
f(tailcfg.DNSRecord{}, "Type"): false,
f(tailcfg.DNSRecord{}, "Value"): false,
f(tailcfg.DisplayMessageAction{}, "Label"): false,
f(tailcfg.DisplayMessageAction{}, "URL"): false,
f(tailcfg.DisplayMessage{}, "ImpactsConnectivity"): false,
f(tailcfg.DisplayMessage{}, "PrimaryAction"): false,
f(tailcfg.DisplayMessage{}, "Severity"): false,
f(tailcfg.DisplayMessage{}, "Text"): false,
f(tailcfg.DisplayMessage{}, "Title"): false,
f(tailcfg.FilterRule{}, "CapGrant"): false,
f(tailcfg.FilterRule{}, "DstPorts"): false,
f(tailcfg.FilterRule{}, "IPProto"): false,
f(tailcfg.FilterRule{}, "SrcBits"): false,
f(tailcfg.FilterRule{}, "SrcIPs"): false,
f(tailcfg.HostinfoView{}, "ж"): false,
f(tailcfg.Hostinfo{}, "AllowsUpdate"): false,
f(tailcfg.Hostinfo{}, "App"): false,
f(tailcfg.Hostinfo{}, "AppConnector"): false,
f(tailcfg.Hostinfo{}, "BackendLogID"): false,
f(tailcfg.Hostinfo{}, "Cloud"): false,
f(tailcfg.Hostinfo{}, "Container"): false,
f(tailcfg.Hostinfo{}, "Desktop"): false,
f(tailcfg.Hostinfo{}, "DeviceModel"): false,
f(tailcfg.Hostinfo{}, "Distro"): false,
f(tailcfg.Hostinfo{}, "DistroCodeName"): false,
f(tailcfg.Hostinfo{}, "DistroVersion"): false,
f(tailcfg.Hostinfo{}, "Env"): false,
f(tailcfg.Hostinfo{}, "ExitNodeID"): false,
f(tailcfg.Hostinfo{}, "FrontendLogID"): false,
f(tailcfg.Hostinfo{}, "GoArch"): false,
f(tailcfg.Hostinfo{}, "GoArchVar"): false,
f(tailcfg.Hostinfo{}, "GoVersion"): false,
f(tailcfg.Hostinfo{}, "Hostname"): false,
f(tailcfg.Hostinfo{}, "IPNVersion"): false,
f(tailcfg.Hostinfo{}, "IngressEnabled"): false,
f(tailcfg.Hostinfo{}, "Location"): false,
f(tailcfg.Hostinfo{}, "Machine"): false,
f(tailcfg.Hostinfo{}, "NetInfo"): false,
f(tailcfg.Hostinfo{}, "NoLogsNoSupport"): false,
f(tailcfg.Hostinfo{}, "OS"): false,
f(tailcfg.Hostinfo{}, "OSVersion"): false,
f(tailcfg.Hostinfo{}, "Package"): false,
f(tailcfg.Hostinfo{}, "PushDeviceToken"): false,
f(tailcfg.Hostinfo{}, "RequestTags"): false,
f(tailcfg.Hostinfo{}, "RoutableIPs"): false,
f(tailcfg.Hostinfo{}, "SSH_HostKeys"): false,
f(tailcfg.Hostinfo{}, "Services"): false,
f(tailcfg.Hostinfo{}, "ServicesHash"): false,
f(tailcfg.Hostinfo{}, "ShareeNode"): false,
f(tailcfg.Hostinfo{}, "ShieldsUp"): false,
f(tailcfg.Hostinfo{}, "StateEncrypted"): false,
f(tailcfg.Hostinfo{}, "TPM"): false,
f(tailcfg.Hostinfo{}, "Userspace"): false,
f(tailcfg.Hostinfo{}, "UserspaceRouter"): false,
f(tailcfg.Hostinfo{}, "WireIngress"): false,
f(tailcfg.Hostinfo{}, "WoLMACs"): false,
f(tailcfg.Location{}, "City"): false,
f(tailcfg.Location{}, "CityCode"): false,
f(tailcfg.Location{}, "Country"): false,
f(tailcfg.Location{}, "CountryCode"): false,
f(tailcfg.Location{}, "Latitude"): false,
f(tailcfg.Location{}, "Longitude"): false,
f(tailcfg.Location{}, "Priority"): false,
f(tailcfg.NetInfo{}, "DERPLatency"): false,
f(tailcfg.NetInfo{}, "FirewallMode"): false,
f(tailcfg.NetInfo{}, "HairPinning"): false,
f(tailcfg.NetInfo{}, "HavePortMap"): false,
f(tailcfg.NetInfo{}, "LinkType"): false,
f(tailcfg.NetInfo{}, "MappingVariesByDestIP"): false,
f(tailcfg.NetInfo{}, "OSHasIPv6"): false,
f(tailcfg.NetInfo{}, "PCP"): false,
f(tailcfg.NetInfo{}, "PMP"): false,
f(tailcfg.NetInfo{}, "PreferredDERP"): false,
f(tailcfg.NetInfo{}, "UPnP"): false,
f(tailcfg.NetInfo{}, "WorkingICMPv4"): false,
f(tailcfg.NetInfo{}, "WorkingIPv6"): false,
f(tailcfg.NetInfo{}, "WorkingUDP"): false,
f(tailcfg.NetPortRange{}, "Bits"): false,
f(tailcfg.NetPortRange{}, "IP"): false,
f(tailcfg.NetPortRange{}, "Ports"): false,
f(tailcfg.NetPortRange{}, "_"): false,
f(tailcfg.NodeView{}, "ж"): false,
f(tailcfg.Node{}, "Addresses"): false,
f(tailcfg.Node{}, "AllowedIPs"): false,
f(tailcfg.Node{}, "Cap"): false,
f(tailcfg.Node{}, "CapMap"): false,
f(tailcfg.Node{}, "Capabilities"): false,
f(tailcfg.Node{}, "ComputedName"): false,
f(tailcfg.Node{}, "ComputedNameWithHost"): false,
f(tailcfg.Node{}, "Created"): false,
f(tailcfg.Node{}, "DataPlaneAuditLogID"): false,
f(tailcfg.Node{}, "DiscoKey"): false,
f(tailcfg.Node{}, "Endpoints"): false,
f(tailcfg.Node{}, "ExitNodeDNSResolvers"): false,
f(tailcfg.Node{}, "Expired"): false,
f(tailcfg.Node{}, "HomeDERP"): false,
f(tailcfg.Node{}, "Hostinfo"): false,
f(tailcfg.Node{}, "ID"): false,
f(tailcfg.Node{}, "IsJailed"): false,
f(tailcfg.Node{}, "IsWireGuardOnly"): false,
f(tailcfg.Node{}, "Key"): false,
f(tailcfg.Node{}, "KeyExpiry"): false,
f(tailcfg.Node{}, "KeySignature"): false,
f(tailcfg.Node{}, "LastSeen"): false,
f(tailcfg.Node{}, "LegacyDERPString"): false,
f(tailcfg.Node{}, "Machine"): false,
f(tailcfg.Node{}, "MachineAuthorized"): false,
f(tailcfg.Node{}, "Name"): false,
f(tailcfg.Node{}, "Online"): false,
f(tailcfg.Node{}, "PrimaryRoutes"): false,
f(tailcfg.Node{}, "SelfNodeV4MasqAddrForThisPeer"): false,
f(tailcfg.Node{}, "SelfNodeV6MasqAddrForThisPeer"): false,
f(tailcfg.Node{}, "Sharer"): false,
f(tailcfg.Node{}, "StableID"): false,
f(tailcfg.Node{}, "Tags"): false,
f(tailcfg.Node{}, "UnsignedPeerAPIOnly"): false,
f(tailcfg.Node{}, "User"): false,
f(tailcfg.Node{}, "computedHostIfDifferent"): false,
f(tailcfg.PortRange{}, "First"): false,
f(tailcfg.PortRange{}, "Last"): false,
f(tailcfg.SSHPolicy{}, "Rules"): false,
f(tailcfg.Service{}, "Description"): false,
f(tailcfg.Service{}, "Port"): false,
f(tailcfg.Service{}, "Proto"): false,
f(tailcfg.Service{}, "_"): false,
f(tailcfg.TPMInfo{}, "FamilyIndicator"): false,
f(tailcfg.TPMInfo{}, "FirmwareVersion"): false,
f(tailcfg.TPMInfo{}, "Manufacturer"): false,
f(tailcfg.TPMInfo{}, "Model"): false,
f(tailcfg.TPMInfo{}, "SpecRevision"): false,
f(tailcfg.TPMInfo{}, "Vendor"): false,
f(tailcfg.UserProfileView{}, "ж"): false,
f(tailcfg.UserProfile{}, "DisplayName"): false,
f(tailcfg.UserProfile{}, "ID"): false,
f(tailcfg.UserProfile{}, "LoginName"): false,
f(tailcfg.UserProfile{}, "ProfilePicURL"): false,
f(views.Slice[ipproto.Proto]{}, "ж"): false,
f(views.Slice[tailcfg.FilterRule]{}, "ж"): false,
}
t.Run("field_list_is_complete", func(t *testing.T) {
seen := set.Set[field]{}
eachStructField(reflect.TypeOf(netmap.NetworkMap{}), func(rt reflect.Type, sf reflect.StructField) {
f := field{rt, sf.Name}
seen.Add(f)
if _, ok := fields[f]; !ok {
// Fail the test if netmap has a field not in the list. If you see this test
// failure, please add the new field to the fields map above, marking it as private or public.
t.Errorf("netmap field has not been declared as private or public: %v.%v", rt, sf.Name)
}
})
for want := range fields {
if !seen.Contains(want) {
// Fail the test if the list has a field not in netmap. If you see this test
// failure, please remove the field from the fields map above.
t.Errorf("field declared that has not been found in netmap: %v.%v", want.t, want.f)
}
}
})
// tests is a list of test cases, each with a non-redacted netmap and the expected redacted netmap.
// If you add a new private field to netmap.NetworkMap or its sub-structs, please add a test case
// here that has that field set in nm, and the expected redacted value in wantRedacted.
tests := []struct {
name string
nm *netmap.NetworkMap
wantRedacted *netmap.NetworkMap
}{
{
name: "redact_private_key",
nm: &netmap.NetworkMap{
PrivateKey: key.NewNode(),
},
wantRedacted: &netmap.NetworkMap{},
},
}
// confirmedRedacted is a set of all private fields that have been covered by the tests above.
confirmedRedacted := set.Set[field]{}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
// Record which of the private fields are set in the non-redacted netmap.
eachStructValue(reflect.ValueOf(tt.nm).Elem(), func(tt reflect.Type, sf reflect.StructField, v reflect.Value) {
f := field{tt, sf.Name}
if shouldRedact := fields[f]; shouldRedact && !v.IsZero() {
confirmedRedacted.Add(f)
}
})
got, _ := redactNetmapPrivateKeys(tt.nm)
if !reflect.DeepEqual(got, tt.wantRedacted) {
t.Errorf("unexpected redacted netmap: %+v", got)
}
// Check that all private fields in the redacted netmap are zero.
eachStructValue(reflect.ValueOf(got).Elem(), func(tt reflect.Type, sf reflect.StructField, v reflect.Value) {
f := field{tt, sf.Name}
if shouldRedact := fields[f]; shouldRedact && !v.IsZero() {
t.Errorf("field not redacted: %v.%v", tt, sf.Name)
}
})
})
}
// Check that all private fields in netmap.NetworkMap and its sub-structs
// are covered by the tests above. If you see a test failure here,
// please add a test case above that has that field set in nm.
for f, shouldRedact := range fields {
if shouldRedact {
if !confirmedRedacted.Contains(f) {
t.Errorf("field not covered by tests: %v.%v", f.t, f.f)
}
}
}
}
func TestHandleC2NDebugNetmap(t *testing.T) {
nm := &netmap.NetworkMap{
Name: "myhost",
SelfNode: (&tailcfg.Node{
ID: 100,
Name: "myhost",
StableID: "deadbeef",
Key: key.NewNode().Public(),
Hostinfo: (&tailcfg.Hostinfo{Hostname: "myhost"}).View(),
}).View(),
Peers: []tailcfg.NodeView{
(&tailcfg.Node{
ID: 101,
Name: "peer1",
StableID: "deadbeef",
Key: key.NewNode().Public(),
Hostinfo: (&tailcfg.Hostinfo{Hostname: "peer1"}).View(),
}).View(),
},
PrivateKey: key.NewNode(),
}
withoutPrivateKey := *nm
withoutPrivateKey.PrivateKey = key.NodePrivate{}
for _, tt := range []struct {
name string
req *tailcfg.C2NDebugNetmapRequest
want *netmap.NetworkMap
}{
{
name: "simple_get",
want: &withoutPrivateKey,
},
{
name: "post_no_omit",
req: &tailcfg.C2NDebugNetmapRequest{},
want: &withoutPrivateKey,
},
{
name: "post_omit_peers_and_name",
req: &tailcfg.C2NDebugNetmapRequest{OmitFields: []string{"Peers", "Name"}},
want: &netmap.NetworkMap{
SelfNode: nm.SelfNode,
},
},
{
name: "post_omit_nonexistent_field",
req: &tailcfg.C2NDebugNetmapRequest{OmitFields: []string{"ThisFieldDoesNotExist"}},
want: &withoutPrivateKey,
},
} {
t.Run(tt.name, func(t *testing.T) {
b := newTestLocalBackend(t)
b.currentNode().SetNetMap(nm)
rec := httptest.NewRecorder()
req := httptest.NewRequest("GET", "/debug/netmap", nil)
if tt.req != nil {
b, err := json.Marshal(tt.req)
if err != nil {
t.Fatalf("json.Marshal: %v", err)
}
req = httptest.NewRequest("POST", "/debug/netmap", bytes.NewReader(b))
}
handleC2NDebugNetMap(b, rec, req)
res := rec.Result()
wantStatus := 200
if res.StatusCode != wantStatus {
t.Fatalf("status code = %v; want %v. Body: %s", res.Status, wantStatus, rec.Body.Bytes())
}
var resp tailcfg.C2NDebugNetmapResponse
if err := json.Unmarshal(rec.Body.Bytes(), &resp); err != nil {
t.Fatalf("bad JSON: %v", err)
}
got := &netmap.NetworkMap{}
if err := json.Unmarshal(resp.Current, got); err != nil {
t.Fatalf("bad JSON: %v", err)
}
if diff := gcmp.Diff(tt.want, got,
gcmp.AllowUnexported(netmap.NetworkMap{}, key.NodePublic{}, views.Slice[tailcfg.FilterRule]{}),
cmpopts.EquateComparable(key.MachinePublic{}),
); diff != "" {
t.Errorf("netmap mismatch (-want +got):\n%s", diff)
}
})
}
}
|
