dendrite/serverkeyapi/serverkeyapi_test.go

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package serverkeyapi
import (
"bytes"
"context"
"crypto/ed25519"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"os"
"reflect"
"testing"
"time"
"github.com/matrix-org/dendrite/federationapi/routing"
"github.com/matrix-org/dendrite/internal/caching"
"github.com/matrix-org/dendrite/internal/config"
"github.com/matrix-org/dendrite/serverkeyapi/api"
"github.com/matrix-org/gomatrixserverlib"
)
type server struct {
name gomatrixserverlib.ServerName // server name
validity time.Duration // key validity duration from now
config *config.ServerKeyAPI // skeleton config, from TestMain
fedconfig *config.FederationAPI //
fedclient *gomatrixserverlib.FederationClient // uses MockRoundTripper
cache *caching.Caches // server-specific cache
api api.ServerKeyInternalAPI // server-specific server key API
}
func (s *server) renew() {
// This updates the validity period to be an hour in the
// future, which is particularly useful in server A and
// server C's cases which have validity either as now or
// in the past.
s.validity = time.Hour
s.config.Matrix.KeyValidityPeriod = s.validity
}
var (
serverKeyID = gomatrixserverlib.KeyID("ed25519:auto")
serverA = &server{name: "a.com", validity: time.Duration(0)} // expires now
serverB = &server{name: "b.com", validity: time.Hour} // expires in an hour
serverC = &server{name: "c.com", validity: -time.Hour} // expired an hour ago
)
var servers = map[string]*server{
"a.com": serverA,
"b.com": serverB,
"c.com": serverC,
}
func TestMain(m *testing.M) {
// Set up the server key API for each "server" that we
// will use in our tests.
for _, s := range servers {
// Generate a new key.
_, testPriv, err := ed25519.GenerateKey(nil)
if err != nil {
panic("can't generate identity key: " + err.Error())
}
// Create a new cache but don't enable prometheus!
s.cache, err = caching.NewInMemoryLRUCache(false)
if err != nil {
panic("can't create cache: " + err.Error())
}
// Draw up just enough Dendrite config for the server key
// API to work.
cfg := &config.Dendrite{}
cfg.Defaults()
cfg.Global.ServerName = gomatrixserverlib.ServerName(s.name)
cfg.Global.PrivateKey = testPriv
cfg.Global.KeyID = serverKeyID
cfg.Global.KeyValidityPeriod = s.validity
cfg.ServerKeyAPI.Database.ConnectionString = config.DataSource("file::memory:")
s.config = &cfg.ServerKeyAPI
s.fedconfig = &cfg.FederationAPI
// Create a transport which redirects federation requests to
// the mock round tripper. Since we're not *really* listening for
// federation requests then this will return the key instead.
transport := &http.Transport{}
transport.RegisterProtocol("matrix", &MockRoundTripper{})
// Create the federation client.
s.fedclient = gomatrixserverlib.NewFederationClientWithTransport(
s.config.Matrix.ServerName, serverKeyID, testPriv, true, transport,
)
// Finally, build the server key APIs.
s.api = NewInternalAPI(s.config, s.fedclient, s.cache)
}
// Now that we have built our server key APIs, start the
// rest of the tests.
os.Exit(m.Run())
}
type MockRoundTripper struct{}
func (m *MockRoundTripper) RoundTrip(req *http.Request) (res *http.Response, err error) {
// Check if the request is looking for keys from a server that
// we know about in the test. The only reason this should go wrong
// is if the test is broken.
s, ok := servers[req.Host]
if !ok {
return nil, fmt.Errorf("server not known: %s", req.Host)
}
// We're intercepting /matrix/key/v2/server requests here, so check
// that the URL supplied in the request is for that.
if req.URL.Path != "/_matrix/key/v2/server" {
return nil, fmt.Errorf("unexpected request path: %s", req.URL.Path)
}
// Get the keys and JSON-ify them.
keys := routing.LocalKeys(s.fedconfig)
body, err := json.MarshalIndent(keys.JSON, "", " ")
if err != nil {
return nil, err
}
// And respond.
res = &http.Response{
StatusCode: 200,
Body: ioutil.NopCloser(bytes.NewReader(body)),
}
return
}
func TestServersRequestOwnKeys(t *testing.T) {
// Each server will request its own keys. There's no reason
// for this to fail as each server should know its own keys.
for name, s := range servers {
req := gomatrixserverlib.PublicKeyLookupRequest{
ServerName: s.name,
KeyID: serverKeyID,
}
res, err := s.api.FetchKeys(
context.Background(),
map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp{
req: gomatrixserverlib.AsTimestamp(time.Now()),
},
)
if err != nil {
t.Fatalf("server could not fetch own key: %s", err)
}
if _, ok := res[req]; !ok {
t.Fatalf("server didn't return its own key in the results")
}
t.Logf("%s's key expires at %s\n", name, res[req].ValidUntilTS.Time())
}
}
func TestCachingBehaviour(t *testing.T) {
// Server A will request Server B's key, which has a validity
// period of an hour from now. We should retrieve the key and
// it should make it into the cache automatically.
req := gomatrixserverlib.PublicKeyLookupRequest{
ServerName: serverB.name,
KeyID: serverKeyID,
}
ts := gomatrixserverlib.AsTimestamp(time.Now())
res, err := serverA.api.FetchKeys(
context.Background(),
map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp{
req: ts,
},
)
if err != nil {
t.Fatalf("server A failed to retrieve server B key: %s", err)
}
if len(res) != 1 {
t.Fatalf("server B should have returned one key but instead returned %d keys", len(res))
}
if _, ok := res[req]; !ok {
t.Fatalf("server B isn't included in the key fetch response")
}
// At this point, if the previous key request was a success,
// then the cache should now contain the key. Check if that's
// the case - if it isn't then there's something wrong with
// the cache implementation or we failed to get the key.
cres, ok := serverA.cache.GetServerKey(req, ts)
if !ok {
t.Fatalf("server B key should be in cache but isn't")
}
if !reflect.DeepEqual(cres, res[req]) {
t.Fatalf("the cached result from server B wasn't what server B gave us")
}
// If we ask the cache for the same key but this time for an event
// that happened in +30 minutes. Since the validity period is for
// another hour, then we should get a response back from the cache.
_, ok = serverA.cache.GetServerKey(
req,
gomatrixserverlib.AsTimestamp(time.Now().Add(time.Minute*30)),
)
if !ok {
t.Fatalf("server B key isn't in cache when it should be (+30 minutes)")
}
// If we ask the cache for the same key but this time for an event
// that happened in +90 minutes then we should expect to get no
// cache result. This is because the cache shouldn't return a result
// that is obviously past the validity of the event.
_, ok = serverA.cache.GetServerKey(
req,
gomatrixserverlib.AsTimestamp(time.Now().Add(time.Minute*90)),
)
if ok {
t.Fatalf("server B key is in cache when it shouldn't be (+90 minutes)")
}
}
func TestRenewalBehaviour(t *testing.T) {
// Server A will request Server C's key but their validity period
// is an hour in the past. We'll retrieve the key as, even though it's
// past its validity, it will be able to verify past events.
req := gomatrixserverlib.PublicKeyLookupRequest{
ServerName: serverC.name,
KeyID: serverKeyID,
}
res, err := serverA.api.FetchKeys(
context.Background(),
map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp{
req: gomatrixserverlib.AsTimestamp(time.Now()),
},
)
if err != nil {
t.Fatalf("server A failed to retrieve server C key: %s", err)
}
if len(res) != 1 {
t.Fatalf("server C should have returned one key but instead returned %d keys", len(res))
}
if _, ok := res[req]; !ok {
t.Fatalf("server C isn't included in the key fetch response")
}
// If we ask the cache for the server key for an event that happened
// 90 minutes ago then we should get a cache result, as the key hadn't
// passed its validity by that point. The fact that the key is now in
// the cache is, in itself, proof that we successfully retrieved the
// key before.
oldcached, ok := serverA.cache.GetServerKey(
req,
gomatrixserverlib.AsTimestamp(time.Now().Add(-time.Minute*90)),
)
if !ok {
t.Fatalf("server C key isn't in cache when it should be (-90 minutes)")
}
// If we now ask the cache for the same key but this time for an event
// that only happened 30 minutes ago then we shouldn't get a cached
// result, as the event happened after the key validity expired. This
// is really just for sanity checking.
_, ok = serverA.cache.GetServerKey(
req,
gomatrixserverlib.AsTimestamp(time.Now().Add(-time.Minute*30)),
)
if ok {
t.Fatalf("server B key is in cache when it shouldn't be (-30 minutes)")
}
// We're now going to kick server C into renewing its key. Since we're
// happy at this point that the key that we already have is from the past
// then repeating a key fetch should cause us to try and renew the key.
// If so, then the new key will end up in our cache.
serverC.renew()
res, err = serverA.api.FetchKeys(
context.Background(),
map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp{
req: gomatrixserverlib.AsTimestamp(time.Now()),
},
)
if err != nil {
t.Fatalf("server A failed to retrieve server C key: %s", err)
}
if len(res) != 1 {
t.Fatalf("server C should have returned one key but instead returned %d keys", len(res))
}
if _, ok = res[req]; !ok {
t.Fatalf("server C isn't included in the key fetch response")
}
// We're now going to ask the cache what the new key validity is. If
// it is still the same as the previous validity then we've failed to
// retrieve the renewed key. If it's newer then we've successfully got
// the renewed key.
newcached, ok := serverA.cache.GetServerKey(
req,
gomatrixserverlib.AsTimestamp(time.Now().Add(-time.Minute*30)),
)
if !ok {
t.Fatalf("server B key isn't in cache when it shouldn't be (post-renewal)")
}
if oldcached.ValidUntilTS >= newcached.ValidUntilTS {
t.Fatalf("the server B key should have been renewed but wasn't")
}
t.Log(res)
}