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More server key updates, tests (#1129)

* More key tweaks

* Start testing stuff

* Move responsibility for generating local keys into server key API, don't register prom in caches unless needed, start tests

* Don't store our own keys in the database

* Don't store our own keys in the database

* Don't run tests for now

* Tweak caching behaviour, update tests

* Update comments, add fixes from forward-merge

* Debug logging

* Debug logging

* Perform final comparison against original set of requests

* oops

* Fetcher timeouts

* Fetcher timeouts

* missing func

* Tweaks

* Update gomatrixserverlib

* Fix Federation API test

* Break up FetchKeys

* Add comments to caching

* Add URL check in test

* Partially revert "Move responsibility for generating local keys into server key API, don't register prom in caches unless needed, start tests"

This reverts commit d7eb54c5b3.

* Fix federation API test

* Fix internal cache stuff again

* Fix server key API test

* Update comments

* Update comments from review

* Fix lint
This commit is contained in:
Neil Alexander 2020-06-16 13:11:20 +01:00 committed by GitHub
parent 67ad661813
commit 57b7fa3db8
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
13 changed files with 538 additions and 111 deletions

View file

@ -255,7 +255,7 @@ func testRoomserver(input []string, wantOutput []string, checkQueries func(api.R
panic(err)
}
cache, err := caching.NewInMemoryLRUCache()
cache, err := caching.NewInMemoryLRUCache(false)
if err != nil {
panic(err)
}

3
go.mod
View file

@ -20,7 +20,7 @@ require (
github.com/matrix-org/go-http-js-libp2p v0.0.0-20200518170932-783164aeeda4
github.com/matrix-org/go-sqlite3-js v0.0.0-20200522092705-bc8506ccbcf3
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26
github.com/matrix-org/gomatrixserverlib v0.0.0-20200608125510-defe251235b1
github.com/matrix-org/gomatrixserverlib v0.0.0-20200615161710-f69539c86ea5
github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f
github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7
github.com/mattn/go-sqlite3 v2.0.2+incompatible
@ -38,7 +38,6 @@ require (
github.com/yggdrasil-network/yggdrasil-go v0.3.15-0.20200530233943-aec82d7a391b
go.uber.org/atomic v1.4.0
golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d
golang.org/x/tools v0.0.0-20200612022331-742c5eb664c2 // indirect
gopkg.in/h2non/bimg.v1 v1.0.18
gopkg.in/yaml.v2 v2.2.8
)

13
go.sum
View file

@ -131,7 +131,6 @@ github.com/hashicorp/golang-lru v0.5.3/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uG
github.com/hashicorp/golang-lru v0.5.4 h1:YDjusn29QI/Das2iO9M0BHnIbxPeyuCHsjMW+lJfyTc=
github.com/hashicorp/golang-lru v0.5.4/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
github.com/hjson/hjson-go v3.0.1-0.20190209023717-9147687966d9+incompatible/go.mod h1:qsetwF8NlsTsOTwZTApNlTCerV+b2GjYRRcIk4JMFio=
github.com/hjson/hjson-go v3.0.2-0.20200316202735-d5d0e8b0617d+incompatible/go.mod h1:qsetwF8NlsTsOTwZTApNlTCerV+b2GjYRRcIk4JMFio=
github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
@ -372,8 +371,8 @@ github.com/matrix-org/go-sqlite3-js v0.0.0-20200522092705-bc8506ccbcf3 h1:Yb+Wlf
github.com/matrix-org/go-sqlite3-js v0.0.0-20200522092705-bc8506ccbcf3/go.mod h1:e+cg2q7C7yE5QnAXgzo512tgFh1RbQLC0+jozuegKgo=
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26 h1:Hr3zjRsq2bhrnp3Ky1qgx/fzCtCALOoGYylh2tpS9K4=
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26/go.mod h1:3fxX6gUjWyI/2Bt7J1OLhpCzOfO/bB3AiX0cJtEKud0=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200608125510-defe251235b1 h1:BfrvDrbjoPBvYua/3F/FmrqiZTRGrvtoMRgCVnrufMI=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200608125510-defe251235b1/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200615161710-f69539c86ea5 h1:VN7DoSFVkQF9Bv+TWuBWHLgAz9Nw9UiahFfe2oE6uiQ=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200615161710-f69539c86ea5/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f h1:pRz4VTiRCO4zPlEMc3ESdUOcW4PXHH4Kj+YDz1XyE+Y=
github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f/go.mod h1:y0oDTjZDv5SM9a2rp3bl+CU+bvTRINQsdb7YlDql5Go=
github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7 h1:ntrLa/8xVzeSs8vHFHK25k0C+NV74sYMJnNSg5NoSRo=
@ -566,11 +565,8 @@ github.com/xdg/scram v0.0.0-20180814205039-7eeb5667e42c/go.mod h1:lB8K/P019DLNhe
github.com/xdg/stringprep v1.0.0/go.mod h1:Jhud4/sHMO4oL310DaZAKk9ZaJ08SJfe+sJh0HrGL1Y=
github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
github.com/yggdrasil-network/yggdrasil-extras v0.0.0-20200525205615-6c8a4a2e8855/go.mod h1:xQdsh08Io6nV4WRnOVTe6gI8/2iTvfLDQ0CYa5aMt+I=
github.com/yggdrasil-network/yggdrasil-go v0.3.14 h1:vWzYzCQxOruS+J5FkLfXOS0JhCJx1yI9Erj/h2wfZ/E=
github.com/yggdrasil-network/yggdrasil-go v0.3.14/go.mod h1:rkQzLzVHlFdzsEMG+bDdTI+KeWPCZq1HpXRFzwinf6M=
github.com/yggdrasil-network/yggdrasil-go v0.3.15-0.20200530233943-aec82d7a391b h1:ELOisSxFXCcptRs4LFub+Hz5fYUvV12wZrTps99Eb3E=
github.com/yggdrasil-network/yggdrasil-go v0.3.15-0.20200530233943-aec82d7a391b/go.mod h1:d+Nz6SPeG6kmeSPFL0cvfWfgwEql75fUnZiAONgvyBE=
github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
go.opencensus.io v0.22.1/go.mod h1:Ap50jQcDJrx6rB6VgeeFPtuPIf3wMRvRfrfYDO6+BmA=
go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
@ -604,8 +600,6 @@ golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/mod v0.2.0 h1:KU7oHjnv3XNWfa5COkzUifxZmxp1TyI7ImMXqFxLwvQ=
golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@ -675,9 +669,6 @@ golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGm
golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
golang.org/x/tools v0.0.0-20190311212946-11955173bddd h1:/e+gpKk9r3dJobndpTytxS2gOy6m5uvpg+ISQoEcusQ=
golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20200612022331-742c5eb664c2 h1:DVqHa33CzfnTKwUV6be+I4hp31W6iXn3ZiEcdKGzLyI=
golang.org/x/tools v0.0.0-20200612022331-742c5eb664c2/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=

View file

@ -2,7 +2,6 @@ package caching
import (
"fmt"
"time"
"github.com/matrix-org/gomatrixserverlib"
)
@ -16,22 +15,29 @@ const (
// ServerKeyCache contains the subset of functions needed for
// a server key cache.
type ServerKeyCache interface {
GetServerKey(request gomatrixserverlib.PublicKeyLookupRequest) (response gomatrixserverlib.PublicKeyLookupResult, ok bool)
// request -> timestamp is emulating gomatrixserverlib.FetchKeys:
// https://github.com/matrix-org/gomatrixserverlib/blob/f69539c86ea55d1e2cc76fd8e944e2d82d30397c/keyring.go#L95
// The timestamp should be the timestamp of the event that is being
// verified. We will not return keys from the cache that are not valid
// at this timestamp.
GetServerKey(request gomatrixserverlib.PublicKeyLookupRequest, timestamp gomatrixserverlib.Timestamp) (response gomatrixserverlib.PublicKeyLookupResult, ok bool)
// request -> result is emulating gomatrixserverlib.StoreKeys:
// https://github.com/matrix-org/gomatrixserverlib/blob/f69539c86ea55d1e2cc76fd8e944e2d82d30397c/keyring.go#L112
StoreServerKey(request gomatrixserverlib.PublicKeyLookupRequest, response gomatrixserverlib.PublicKeyLookupResult)
}
func (c Caches) GetServerKey(
request gomatrixserverlib.PublicKeyLookupRequest,
timestamp gomatrixserverlib.Timestamp,
) (gomatrixserverlib.PublicKeyLookupResult, bool) {
key := fmt.Sprintf("%s/%s", request.ServerName, request.KeyID)
now := gomatrixserverlib.AsTimestamp(time.Now())
val, found := c.ServerKeys.Get(key)
if found && val != nil {
if keyLookupResult, ok := val.(gomatrixserverlib.PublicKeyLookupResult); ok {
if !keyLookupResult.WasValidAt(now, true) {
// We appear to be past the key validity so don't return this
// with the results. This ensures that the cache doesn't return
// values that are not useful to us.
if !keyLookupResult.WasValidAt(timestamp, true) {
// The key wasn't valid at the requested timestamp so don't
// return it. The caller will have to work out what to do.
c.ServerKeys.Unset(key)
return gomatrixserverlib.PublicKeyLookupResult{}, false
}

View file

@ -8,11 +8,12 @@ import (
"github.com/prometheus/client_golang/prometheus/promauto"
)
func NewInMemoryLRUCache() (*Caches, error) {
func NewInMemoryLRUCache(enablePrometheus bool) (*Caches, error) {
roomVersions, err := NewInMemoryLRUCachePartition(
RoomVersionCacheName,
RoomVersionCacheMutable,
RoomVersionCacheMaxEntries,
enablePrometheus,
)
if err != nil {
return nil, err
@ -21,6 +22,7 @@ func NewInMemoryLRUCache() (*Caches, error) {
ServerKeyCacheName,
ServerKeyCacheMutable,
ServerKeyCacheMaxEntries,
enablePrometheus,
)
if err != nil {
return nil, err
@ -38,7 +40,7 @@ type InMemoryLRUCachePartition struct {
lru *lru.Cache
}
func NewInMemoryLRUCachePartition(name string, mutable bool, maxEntries int) (*InMemoryLRUCachePartition, error) {
func NewInMemoryLRUCachePartition(name string, mutable bool, maxEntries int, enablePrometheus bool) (*InMemoryLRUCachePartition, error) {
var err error
cache := InMemoryLRUCachePartition{
name: name,
@ -49,6 +51,7 @@ func NewInMemoryLRUCachePartition(name string, mutable bool, maxEntries int) (*I
if err != nil {
return nil, err
}
if enablePrometheus {
promauto.NewGaugeFunc(prometheus.GaugeOpts{
Namespace: "dendrite",
Subsystem: "caching_in_memory_lru",
@ -56,6 +59,7 @@ func NewInMemoryLRUCachePartition(name string, mutable bool, maxEntries int) (*I
}, func() float64 {
return float64(cache.lru.Len())
})
}
return &cache, nil
}

View file

@ -96,7 +96,7 @@ func NewBaseDendrite(cfg *config.Dendrite, componentName string, useHTTPAPIs boo
kafkaConsumer, kafkaProducer = setupKafka(cfg)
}
cache, err := caching.NewInMemoryLRUCache()
cache, err := caching.NewInMemoryLRUCache(true)
if err != nil {
logrus.WithError(err).Warnf("Failed to create cache")
}

View file

@ -2,16 +2,23 @@ package internal
import (
"context"
"crypto/ed25519"
"fmt"
"time"
"github.com/matrix-org/dendrite/serverkeyapi/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/sirupsen/logrus"
)
type ServerKeyAPI struct {
api.ServerKeyInternalAPI
ServerName gomatrixserverlib.ServerName
ServerPublicKey ed25519.PublicKey
ServerKeyID gomatrixserverlib.KeyID
ServerKeyValidity time.Duration
OurKeyRing gomatrixserverlib.KeyRing
FedClient *gomatrixserverlib.FederationClient
}
@ -33,6 +40,7 @@ func (s *ServerKeyAPI) StoreKeys(
// Run in a background context - we don't want to stop this work just
// because the caller gives up waiting.
ctx := context.Background()
// Store any keys that we were given in our database.
return s.OurKeyRing.KeyDatabase.StoreKeys(ctx, results)
}
@ -44,52 +52,57 @@ func (s *ServerKeyAPI) FetchKeys(
// Run in a background context - we don't want to stop this work just
// because the caller gives up waiting.
ctx := context.Background()
results := map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult{}
now := gomatrixserverlib.AsTimestamp(time.Now())
// First consult our local database and see if we have the requested
results := map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult{}
origRequests := map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp{}
for k, v := range requests {
origRequests[k] = v
}
// First, check if any of these key checks are for our own keys. If
// they are then we will satisfy them directly.
s.handleLocalKeys(ctx, requests, results)
// Then consult our local database and see if we have the requested
// keys. These might come from a cache, depending on the database
// implementation used.
if dbResults, err := s.OurKeyRing.KeyDatabase.FetchKeys(ctx, requests); err == nil {
// We successfully got some keys. Add them to the results and
// remove them from the request list.
for req, res := range dbResults {
if !res.WasValidAt(now, true) {
// We appear to be past the key validity. Don't return this
// key with the results.
continue
}
results[req] = res
delete(requests, req)
}
if err := s.handleDatabaseKeys(ctx, now, requests, results); err != nil {
return nil, err
}
// For any key requests that we still have outstanding, next try to
// fetch them directly. We'll go through each of the key fetchers to
// ask for the remaining keys.
// ask for the remaining keys
for _, fetcher := range s.OurKeyRing.KeyFetchers {
// If there are no more keys to look up then stop.
if len(requests) == 0 {
break
}
if fetcherResults, err := fetcher.FetchKeys(ctx, requests); err == nil {
// We successfully got some keys. Add them to the results and
// remove them from the request list.
for req, res := range fetcherResults {
if !res.WasValidAt(now, true) {
// We appear to be past the key validity. Don't return this
// key with the results.
// Ask the fetcher to look up our keys.
if err := s.handleFetcherKeys(ctx, now, fetcher, requests, results); err != nil {
logrus.WithError(err).WithFields(logrus.Fields{
"fetcher_name": fetcher.FetcherName(),
}).Errorf("Failed to retrieve %d key(s)", len(requests))
continue
}
results[req] = res
delete(requests, req)
}
if err = s.OurKeyRing.KeyDatabase.StoreKeys(ctx, fetcherResults); err != nil {
return nil, fmt.Errorf("server key API failed to store retrieved keys: %w", err)
// Check that we've actually satisfied all of the key requests that we
// were given. We should report an error if we didn't.
for req := range origRequests {
if _, ok := results[req]; !ok {
// The results don't contain anything for this specific request, so
// we've failed to satisfy it from local keys, database keys or from
// all of the fetchers. Report an error.
logrus.Warnf("Failed to retrieve key %q for server %q", req.KeyID, req.ServerName)
return results, fmt.Errorf(
"server key API failed to satisfy key request for server %q key ID %q",
req.ServerName, req.KeyID,
)
}
}
}
// If we failed to fetch any keys then we should report an error.
if len(requests) > 0 {
return results, fmt.Errorf("server key API failed to fetch %d keys", len(requests))
}
// Return the keys.
return results, nil
}
@ -97,3 +110,141 @@ func (s *ServerKeyAPI) FetchKeys(
func (s *ServerKeyAPI) FetcherName() string {
return fmt.Sprintf("ServerKeyAPI (wrapping %q)", s.OurKeyRing.KeyDatabase.FetcherName())
}
// handleLocalKeys handles cases where the key request contains
// a request for our own server keys.
func (s *ServerKeyAPI) handleLocalKeys(
_ context.Context,
requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
results map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult,
) {
for req := range requests {
if req.ServerName == s.ServerName {
// We found a key request that is supposed to be for our own
// keys. Remove it from the request list so we don't hit the
// database or the fetchers for it.
delete(requests, req)
// Insert our own key into the response.
results[req] = gomatrixserverlib.PublicKeyLookupResult{
VerifyKey: gomatrixserverlib.VerifyKey{
Key: gomatrixserverlib.Base64Bytes(s.ServerPublicKey),
},
ExpiredTS: gomatrixserverlib.PublicKeyNotExpired,
ValidUntilTS: gomatrixserverlib.AsTimestamp(time.Now().Add(s.ServerKeyValidity)),
}
}
}
}
// handleDatabaseKeys handles cases where the key requests can be
// satisfied from our local database/cache.
func (s *ServerKeyAPI) handleDatabaseKeys(
ctx context.Context,
now gomatrixserverlib.Timestamp,
requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
results map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult,
) error {
// Ask the database/cache for the keys.
dbResults, err := s.OurKeyRing.KeyDatabase.FetchKeys(ctx, requests)
if err != nil {
return err
}
// We successfully got some keys. Add them to the results.
for req, res := range dbResults {
// The key we've retrieved from the database/cache might
// have passed its validity period, but right now, it's
// the best thing we've got, and it might be sufficient to
// verify a past event.
results[req] = res
// If the key is valid right now then we can also remove it
// from the request list as we don't need to fetch it again
// in that case. If the key isn't valid right now, then by
// leaving it in the 'requests' map, we'll try to update the
// key using the fetchers in handleFetcherKeys.
if res.WasValidAt(now, true) {
delete(requests, req)
}
}
return nil
}
// handleFetcherKeys handles cases where a fetcher can satisfy
// the remaining requests.
func (s *ServerKeyAPI) handleFetcherKeys(
ctx context.Context,
now gomatrixserverlib.Timestamp,
fetcher gomatrixserverlib.KeyFetcher,
requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
results map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult,
) error {
logrus.WithFields(logrus.Fields{
"fetcher_name": fetcher.FetcherName(),
}).Infof("Fetching %d key(s)", len(requests))
// Create a context that limits our requests to 30 seconds.
fetcherCtx, fetcherCancel := context.WithTimeout(ctx, time.Second*30)
defer fetcherCancel()
// Try to fetch the keys.
fetcherResults, err := fetcher.FetchKeys(fetcherCtx, requests)
if err != nil {
return err
}
// Build a map of the results that we want to commit to the
// database. We do this in a separate map because otherwise we
// might end up trying to rewrite database entries.
storeResults := map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult{}
// Now let's look at the results that we got from this fetcher.
for req, res := range fetcherResults {
if prev, ok := results[req]; ok {
// We've already got a previous entry for this request
// so let's see if the newly retrieved one contains a more
// up-to-date validity period.
if res.ValidUntilTS > prev.ValidUntilTS {
// This key is newer than the one we had so let's store
// it in the database.
if req.ServerName != s.ServerName {
storeResults[req] = res
}
}
} else {
// We didn't already have a previous entry for this request
// so store it in the database anyway for now.
if req.ServerName != s.ServerName {
storeResults[req] = res
}
}
// Update the results map with this new result. If nothing
// else, we can try verifying against this key.
results[req] = res
// If the key is valid right now then we can remove it from the
// request list as we won't need to re-fetch it.
if res.WasValidAt(now, true) {
delete(requests, req)
}
}
// Store the keys from our store map.
if err = s.OurKeyRing.KeyDatabase.StoreKeys(ctx, storeResults); err != nil {
logrus.WithError(err).WithFields(logrus.Fields{
"fetcher_name": fetcher.FetcherName(),
"database_name": s.OurKeyRing.KeyDatabase.FetcherName(),
}).Errorf("Failed to store keys in the database")
return fmt.Errorf("server key API failed to store retrieved keys: %w", err)
}
if len(storeResults) > 0 {
logrus.WithFields(logrus.Fields{
"fetcher_name": fetcher.FetcherName(),
}).Infof("Updated %d of %d key(s) in database", len(storeResults), len(results))
}
return nil
}

View file

@ -90,7 +90,7 @@ func (s *httpServerKeyInternalAPI) FetchKeys(
Results: make(map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult),
}
for req, ts := range requests {
if res, ok := s.cache.GetServerKey(req); ok {
if res, ok := s.cache.GetServerKey(req, ts); ok {
result[req] = res
continue
}

View file

@ -46,6 +46,10 @@ func NewInternalAPI(
}
internalAPI := internal.ServerKeyAPI{
ServerName: cfg.Matrix.ServerName,
ServerPublicKey: cfg.Matrix.PrivateKey.Public().(ed25519.PublicKey),
ServerKeyID: cfg.Matrix.KeyID,
ServerKeyValidity: cfg.Matrix.KeyValidityPeriod,
FedClient: fedClient,
OurKeyRing: gomatrixserverlib.KeyRing{
KeyFetchers: []gomatrixserverlib.KeyFetcher{

View file

@ -0,0 +1,315 @@
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.Dendrite // skeleton config, from TestMain
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.
s.config = &config.Dendrite{}
s.config.SetDefaults()
s.config.Matrix.ServerName = gomatrixserverlib.ServerName(s.name)
s.config.Matrix.PrivateKey = testPriv
s.config.Matrix.KeyID = serverKeyID
s.config.Matrix.KeyValidityPeriod = s.validity
s.config.Database.ServerKey = config.DataSource("file::memory:")
// 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, 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.config)
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)
}

View file

@ -39,8 +39,8 @@ func (d *KeyDatabase) FetchKeys(
requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
) (map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult, error) {
results := make(map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult)
for req := range requests {
if res, cached := d.cache.GetServerKey(req); cached {
for req, ts := range requests {
if res, cached := d.cache.GetServerKey(req, ts); cached {
results[req] = res
delete(requests, req)
}

View file

@ -17,7 +17,6 @@ package postgres
import (
"context"
"time"
"golang.org/x/crypto/ed25519"
@ -51,28 +50,6 @@ func NewDatabase(
if err != nil {
return nil, err
}
// Store our own keys so that we don't end up making HTTP requests to find our
// own keys
index := gomatrixserverlib.PublicKeyLookupRequest{
ServerName: serverName,
KeyID: serverKeyID,
}
value := gomatrixserverlib.PublicKeyLookupResult{
VerifyKey: gomatrixserverlib.VerifyKey{
Key: gomatrixserverlib.Base64Bytes(serverKey),
},
ValidUntilTS: gomatrixserverlib.AsTimestamp(time.Now().Add(100 * 365 * 24 * time.Hour)),
ExpiredTS: gomatrixserverlib.PublicKeyNotExpired,
}
err = d.StoreKeys(
context.Background(),
map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult{
index: value,
},
)
if err != nil {
return nil, err
}
return d, nil
}

View file

@ -17,7 +17,6 @@ package sqlite3
import (
"context"
"time"
"golang.org/x/crypto/ed25519"
@ -56,25 +55,6 @@ func NewDatabase(
if err != nil {
return nil, err
}
// Store our own keys so that we don't end up making HTTP requests to find our
// own keys
index := gomatrixserverlib.PublicKeyLookupRequest{
ServerName: serverName,
KeyID: serverKeyID,
}
value := gomatrixserverlib.PublicKeyLookupResult{
VerifyKey: gomatrixserverlib.VerifyKey{
Key: gomatrixserverlib.Base64Bytes(serverKey),
},
ValidUntilTS: gomatrixserverlib.AsTimestamp(time.Now().Add(100 * 365 * 24 * time.Hour)),
ExpiredTS: gomatrixserverlib.PublicKeyNotExpired,
}
err = d.StoreKeys(
context.Background(),
map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult{
index: value,
},
)
if err != nil {
return nil, err
}