mirror of
https://github.com/1f349/dendrite.git
synced 2024-11-08 18:16:59 +00:00
Cross-signing signature handling (#1965)
* Handle other signatures * Decorate key ID properly * Match by key IDs * Tweaks * Fixes * Fix /user/keys/query bug, review comments, update sytest-whitelist * Various wtweaks * Fix wiring for keyserver in API mode * Additional fixes
This commit is contained in:
parent
e95b1fd238
commit
b1377d991a
@ -120,6 +120,11 @@ func main() {
|
||||
Impl: userAPI,
|
||||
}
|
||||
}
|
||||
// needs to be after the SetUserAPI call above
|
||||
if base.UseHTTPAPIs {
|
||||
keyserver.AddInternalRoutes(base.InternalAPIMux, keyAPI)
|
||||
keyAPI = base.KeyServerHTTPClient()
|
||||
}
|
||||
|
||||
eduInputAPI := eduserver.NewInternalAPI(
|
||||
base, cache.New(), userAPI,
|
||||
|
@ -38,12 +38,11 @@ func GetUserDevices(
|
||||
}
|
||||
|
||||
sigReq := &keyapi.QuerySignaturesRequest{
|
||||
TargetIDs: map[string][]gomatrixserverlib.KeyID{},
|
||||
TargetIDs: map[string][]gomatrixserverlib.KeyID{
|
||||
userID: {},
|
||||
},
|
||||
}
|
||||
sigRes := &keyapi.QuerySignaturesResponse{}
|
||||
for _, dev := range res.Devices {
|
||||
sigReq.TargetIDs[userID] = append(sigReq.TargetIDs[userID], gomatrixserverlib.KeyID(dev.DeviceID))
|
||||
}
|
||||
keyAPI.QuerySignatures(req.Context(), sigReq, sigRes)
|
||||
|
||||
response := gomatrixserverlib.RespUserDevices{
|
||||
|
@ -71,8 +71,14 @@ func QueryDeviceKeys(
|
||||
return util.JSONResponse{
|
||||
Code: 200,
|
||||
JSON: struct {
|
||||
DeviceKeys interface{} `json:"device_keys"`
|
||||
}{queryRes.DeviceKeys},
|
||||
DeviceKeys interface{} `json:"device_keys"`
|
||||
MasterKeys interface{} `json:"master_keys"`
|
||||
SelfSigningKeys interface{} `json:"self_signing_keys"`
|
||||
}{
|
||||
queryRes.DeviceKeys,
|
||||
queryRes.MasterKeys,
|
||||
queryRes.SelfSigningKeys,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
|
2
go.mod
2
go.mod
@ -31,7 +31,7 @@ require (
|
||||
github.com/matrix-org/go-http-js-libp2p v0.0.0-20200518170932-783164aeeda4
|
||||
github.com/matrix-org/go-sqlite3-js v0.0.0-20210709140738-b0d1ba599a6d
|
||||
github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16
|
||||
github.com/matrix-org/gomatrixserverlib v0.0.0-20210805104751-03e40fa2c0e1
|
||||
github.com/matrix-org/gomatrixserverlib v0.0.0-20210809130922-d9c3f400582b
|
||||
github.com/matrix-org/naffka v0.0.0-20210623111924-14ff508b58e0
|
||||
github.com/matrix-org/pinecone v0.0.0-20210623102758-74f885644c1b
|
||||
github.com/matrix-org/util v0.0.0-20200807132607-55161520e1d4
|
||||
|
4
go.sum
4
go.sum
@ -994,8 +994,8 @@ github.com/matrix-org/go-sqlite3-js v0.0.0-20210709140738-b0d1ba599a6d/go.mod h1
|
||||
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26/go.mod h1:3fxX6gUjWyI/2Bt7J1OLhpCzOfO/bB3AiX0cJtEKud0=
|
||||
github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16 h1:ZtO5uywdd5dLDCud4r0r55eP4j9FuUNpl60Gmntcop4=
|
||||
github.com/matrix-org/gomatrix v0.0.0-20210324163249-be2af5ef2e16/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
|
||||
github.com/matrix-org/gomatrixserverlib v0.0.0-20210805104751-03e40fa2c0e1 h1:ExS9AmOWYSZ4DR7W7Eqm7glP/g/u/CTVLAu9blAnve4=
|
||||
github.com/matrix-org/gomatrixserverlib v0.0.0-20210805104751-03e40fa2c0e1/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
|
||||
github.com/matrix-org/gomatrixserverlib v0.0.0-20210809130922-d9c3f400582b h1:8St1B8QmlvMLsOmGqW3++0akUs0250IAi+AGcr5faxw=
|
||||
github.com/matrix-org/gomatrixserverlib v0.0.0-20210809130922-d9c3f400582b/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
|
||||
github.com/matrix-org/naffka v0.0.0-20210623111924-14ff508b58e0 h1:HZCzy4oVzz55e+cOMiX/JtSF2UOY1evBl2raaE7ACcU=
|
||||
github.com/matrix-org/naffka v0.0.0-20210623111924-14ff508b58e0/go.mod h1:sjyPyRxKM5uw1nD2cJ6O2OxI6GOqyVBfNXqKjBZTBZE=
|
||||
github.com/matrix-org/pinecone v0.0.0-20210623102758-74f885644c1b h1:5X5vdWQ13xrNkJVqaJHPsrt7rKkMJH5iac0EtfOuxSg=
|
||||
|
@ -160,7 +160,7 @@ type PerformClaimKeysResponse struct {
|
||||
type PerformUploadDeviceKeysRequest struct {
|
||||
gomatrixserverlib.CrossSigningKeys
|
||||
// The user that uploaded the key, should be populated by the clientapi.
|
||||
UserID string `json:"user_id"`
|
||||
UserID string
|
||||
}
|
||||
|
||||
type PerformUploadDeviceKeysResponse struct {
|
||||
@ -170,7 +170,7 @@ type PerformUploadDeviceKeysResponse struct {
|
||||
type PerformUploadDeviceSignaturesRequest struct {
|
||||
Signatures map[string]map[gomatrixserverlib.KeyID]gomatrixserverlib.CrossSigningForKeyOrDevice
|
||||
// The user that uploaded the sig, should be populated by the clientapi.
|
||||
UserID string `json:"user_id"`
|
||||
UserID string
|
||||
}
|
||||
|
||||
type PerformUploadDeviceSignaturesResponse struct {
|
||||
|
@ -15,6 +15,7 @@
|
||||
package internal
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"crypto/ed25519"
|
||||
"database/sql"
|
||||
@ -78,8 +79,8 @@ func (a *KeyInternalAPI) PerformUploadDeviceKeys(ctx context.Context, req *api.P
|
||||
}
|
||||
return
|
||||
}
|
||||
hasMasterKey = true
|
||||
for _, keyData := range req.MasterKey.Keys { // iterates once, because sanityCheckKey requires one key
|
||||
hasMasterKey = true
|
||||
masterKey = keyData
|
||||
}
|
||||
}
|
||||
@ -116,46 +117,11 @@ func (a *KeyInternalAPI) PerformUploadDeviceKeys(ctx context.Context, req *api.P
|
||||
masterKey, hasMasterKey = existingKeys[gomatrixserverlib.CrossSigningKeyPurposeMaster]
|
||||
}
|
||||
|
||||
// If the user isn't a local user and we haven't successfully found a key
|
||||
// through any local means then ask over federation.
|
||||
if !hasMasterKey {
|
||||
_, host, err := gomatrixserverlib.SplitID('@', req.UserID)
|
||||
if err != nil {
|
||||
res.Error = &api.KeyError{
|
||||
Err: "Retrieving cross-signing keys from federation failed: " + err.Error(),
|
||||
}
|
||||
return
|
||||
}
|
||||
keys, err := a.FedClient.QueryKeys(ctx, host, map[string][]string{
|
||||
req.UserID: {},
|
||||
})
|
||||
if err != nil {
|
||||
res.Error = &api.KeyError{
|
||||
Err: "Retrieving cross-signing keys from federation failed: " + err.Error(),
|
||||
}
|
||||
return
|
||||
}
|
||||
switch k := keys.MasterKeys[req.UserID].CrossSigningBody.(type) {
|
||||
case *gomatrixserverlib.CrossSigningKey:
|
||||
if err := sanityCheckKey(*k, req.UserID, gomatrixserverlib.CrossSigningKeyPurposeMaster); err != nil {
|
||||
res.Error = &api.KeyError{
|
||||
Err: "Master key sanity check failed: " + err.Error(),
|
||||
}
|
||||
return
|
||||
}
|
||||
default:
|
||||
res.Error = &api.KeyError{
|
||||
Err: "Unexpected type for master key retrieved from federation",
|
||||
}
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// If we still don't have a master key at this point then there's nothing else
|
||||
// we can do - we've checked both the request and the database.
|
||||
if !hasMasterKey {
|
||||
res.Error = &api.KeyError{
|
||||
Err: "No master key was found, either in the database or in the request!",
|
||||
Err: "No master key was found either in the database or in the request!",
|
||||
IsMissingParam: true,
|
||||
}
|
||||
return
|
||||
@ -176,6 +142,15 @@ func (a *KeyInternalAPI) PerformUploadDeviceKeys(ctx context.Context, req *api.P
|
||||
if len(req.UserSigningKey.Keys) > 0 {
|
||||
toVerify[gomatrixserverlib.CrossSigningKeyPurposeUserSigning] = req.UserSigningKey
|
||||
}
|
||||
|
||||
if len(toVerify) == 0 {
|
||||
res.Error = &api.KeyError{
|
||||
Err: "No supplied keys available for verification",
|
||||
IsMissingParam: true,
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
for purpose, key := range toVerify {
|
||||
// Collect together the key IDs we need to verify with. This will include
|
||||
// all of the key IDs specified in the signatures.
|
||||
@ -212,6 +187,14 @@ func (a *KeyInternalAPI) PerformUploadDeviceKeys(ctx context.Context, req *api.P
|
||||
}
|
||||
}
|
||||
|
||||
if len(toStore) == 0 {
|
||||
res.Error = &api.KeyError{
|
||||
Err: "No supplied keys passed verification",
|
||||
IsMissingParam: true,
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
if err := a.DB.StoreCrossSigningKeysForUser(ctx, req.UserID, toStore); err != nil {
|
||||
res.Error = &api.KeyError{
|
||||
Err: fmt.Sprintf("a.DB.StoreCrossSigningKeysForUser: %s", err),
|
||||
@ -257,6 +240,8 @@ func (a *KeyInternalAPI) PerformUploadDeviceSignatures(ctx context.Context, req
|
||||
selfSignatures := map[string]map[gomatrixserverlib.KeyID]gomatrixserverlib.CrossSigningForKeyOrDevice{}
|
||||
otherSignatures := map[string]map[gomatrixserverlib.KeyID]gomatrixserverlib.CrossSigningForKeyOrDevice{}
|
||||
|
||||
// Sort signatures into two groups: one where people have signed their own
|
||||
// keys and one where people have signed someone elses
|
||||
for userID, forUserID := range req.Signatures {
|
||||
for keyID, keyOrDevice := range forUserID {
|
||||
switch key := keyOrDevice.CrossSigningBody.(type) {
|
||||
@ -335,20 +320,18 @@ func (a *KeyInternalAPI) processSelfSignatures(
|
||||
}
|
||||
|
||||
for originKeyID, originSig := range forOriginUserID {
|
||||
originDeviceKeyID := gomatrixserverlib.KeyID("ed25519:" + originKeyID)
|
||||
|
||||
var originKey gomatrixserverlib.DeviceKeys
|
||||
if err := json.Unmarshal(originDeviceKeys[string(originKeyID)], &originKey); err != nil {
|
||||
return fmt.Errorf("json.Unmarshal: %w", err)
|
||||
}
|
||||
|
||||
originSigningKey, ok := originKey.Keys[originDeviceKeyID]
|
||||
originSigningKey, ok := originKey.Keys[originKeyID]
|
||||
if !ok {
|
||||
return fmt.Errorf("missing origin signing key %q", originDeviceKeyID)
|
||||
return fmt.Errorf("missing origin signing key %q", originKeyID)
|
||||
}
|
||||
originSigningKeyPublic := ed25519.PublicKey(originSigningKey)
|
||||
|
||||
if err := gomatrixserverlib.VerifyJSON(originUserID, originDeviceKeyID, originSigningKeyPublic, j); err != nil {
|
||||
if err := gomatrixserverlib.VerifyJSON(originUserID, originKeyID, originSigningKeyPublic, j); err != nil {
|
||||
return fmt.Errorf("gomatrixserverlib.VerifyJSON: %w", err)
|
||||
}
|
||||
|
||||
@ -414,6 +397,56 @@ func (a *KeyInternalAPI) processOtherSignatures(
|
||||
// Here we will process:
|
||||
// * A user signing someone else's master keys using their user-signing keys
|
||||
|
||||
for targetUserID, forTargetUserID := range signatures {
|
||||
for _, signature := range forTargetUserID {
|
||||
switch sig := signature.CrossSigningBody.(type) {
|
||||
case *gomatrixserverlib.CrossSigningKey:
|
||||
// Find the local copy of the master key. We'll use this to be
|
||||
// sure that the supplied stanza matches the key that we think it
|
||||
// should be.
|
||||
masterKey, ok := queryRes.MasterKeys[targetUserID]
|
||||
if !ok {
|
||||
return fmt.Errorf("failed to find master key for user %q", targetUserID)
|
||||
}
|
||||
|
||||
// For each key ID, write the signatures. Maybe there'll be more
|
||||
// than one algorithm in the future so it's best not to focus on
|
||||
// everything being ed25519:.
|
||||
for targetKeyID, suppliedKeyData := range sig.Keys {
|
||||
// The master key will be supplied in the request, but we should
|
||||
// make sure that it matches what we think the master key should
|
||||
// actually be.
|
||||
localKeyData, lok := masterKey.Keys[targetKeyID]
|
||||
if !lok {
|
||||
return fmt.Errorf("uploaded master key %q for user %q doesn't match local copy", targetKeyID, targetUserID)
|
||||
} else if !bytes.Equal(suppliedKeyData, localKeyData) {
|
||||
return fmt.Errorf("uploaded master key %q for user %q doesn't match local copy", targetKeyID, targetUserID)
|
||||
}
|
||||
|
||||
// We only care about the signatures from the uploading user, so
|
||||
// we will ignore anything that didn't originate from them.
|
||||
userSigs, ok := sig.Signatures[userID]
|
||||
if !ok {
|
||||
return fmt.Errorf("there are no signatures on master key %q from uploading user %q", targetKeyID, userID)
|
||||
}
|
||||
|
||||
for originKeyID, originSig := range userSigs {
|
||||
if err := a.DB.StoreCrossSigningSigsForTarget(
|
||||
ctx, userID, originKeyID, targetUserID, targetKeyID, originSig,
|
||||
); err != nil {
|
||||
return fmt.Errorf("a.DB.StoreCrossSigningKeysForTarget: %w", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
default:
|
||||
// Users should only be signing another person's master key,
|
||||
// so if we're here, it's probably because it's actually a
|
||||
// gomatrixserverlib.DeviceKeys, which doesn't make sense.
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
@ -435,7 +468,7 @@ func (a *KeyInternalAPI) crossSigningKeysFromDatabase(
|
||||
}
|
||||
|
||||
sigMap, err := a.DB.CrossSigningSigsForTarget(ctx, userID, keyID)
|
||||
if err != nil {
|
||||
if err != nil && err != sql.ErrNoRows {
|
||||
logrus.WithError(err).Errorf("Failed to get cross-signing signatures for user %q key %q", userID, keyID)
|
||||
continue
|
||||
}
|
||||
@ -480,44 +513,39 @@ func (a *KeyInternalAPI) crossSigningKeysFromDatabase(
|
||||
|
||||
func (a *KeyInternalAPI) QuerySignatures(ctx context.Context, req *api.QuerySignaturesRequest, res *api.QuerySignaturesResponse) {
|
||||
for targetUserID, forTargetUser := range req.TargetIDs {
|
||||
keyMap, err := a.DB.CrossSigningKeysForUser(ctx, targetUserID)
|
||||
if err != nil && err != sql.ErrNoRows {
|
||||
res.Error = &api.KeyError{
|
||||
Err: fmt.Sprintf("a.DB.CrossSigningKeysForUser: %s", err),
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
for targetPurpose, targetKey := range keyMap {
|
||||
switch targetPurpose {
|
||||
case gomatrixserverlib.CrossSigningKeyPurposeMaster:
|
||||
if res.MasterKeys == nil {
|
||||
res.MasterKeys = map[string]gomatrixserverlib.CrossSigningKey{}
|
||||
}
|
||||
res.MasterKeys[targetUserID] = targetKey
|
||||
|
||||
case gomatrixserverlib.CrossSigningKeyPurposeSelfSigning:
|
||||
if res.SelfSigningKeys == nil {
|
||||
res.SelfSigningKeys = map[string]gomatrixserverlib.CrossSigningKey{}
|
||||
}
|
||||
res.SelfSigningKeys[targetUserID] = targetKey
|
||||
|
||||
case gomatrixserverlib.CrossSigningKeyPurposeUserSigning:
|
||||
if res.UserSigningKeys == nil {
|
||||
res.UserSigningKeys = map[string]gomatrixserverlib.CrossSigningKey{}
|
||||
}
|
||||
res.UserSigningKeys[targetUserID] = targetKey
|
||||
}
|
||||
}
|
||||
|
||||
for _, targetKeyID := range forTargetUser {
|
||||
keyMap, err := a.DB.CrossSigningKeysForUser(ctx, targetUserID)
|
||||
if err != nil {
|
||||
if err == sql.ErrNoRows {
|
||||
continue
|
||||
}
|
||||
res.Error = &api.KeyError{
|
||||
Err: fmt.Sprintf("a.DB.CrossSigningKeysForUser: %s", err),
|
||||
}
|
||||
}
|
||||
|
||||
for targetPurpose, targetKey := range keyMap {
|
||||
switch targetPurpose {
|
||||
case gomatrixserverlib.CrossSigningKeyPurposeMaster:
|
||||
if res.MasterKeys == nil {
|
||||
res.MasterKeys = map[string]gomatrixserverlib.CrossSigningKey{}
|
||||
}
|
||||
res.MasterKeys[targetUserID] = targetKey
|
||||
|
||||
case gomatrixserverlib.CrossSigningKeyPurposeSelfSigning:
|
||||
if res.SelfSigningKeys == nil {
|
||||
res.SelfSigningKeys = map[string]gomatrixserverlib.CrossSigningKey{}
|
||||
}
|
||||
res.SelfSigningKeys[targetUserID] = targetKey
|
||||
|
||||
case gomatrixserverlib.CrossSigningKeyPurposeUserSigning:
|
||||
if res.UserSigningKeys == nil {
|
||||
res.UserSigningKeys = map[string]gomatrixserverlib.CrossSigningKey{}
|
||||
}
|
||||
res.UserSigningKeys[targetUserID] = targetKey
|
||||
}
|
||||
}
|
||||
|
||||
sigMap, err := a.DB.CrossSigningSigsForTarget(ctx, targetUserID, targetKeyID)
|
||||
if err != nil {
|
||||
if err == sql.ErrNoRows {
|
||||
continue
|
||||
}
|
||||
if err != nil && err != sql.ErrNoRows {
|
||||
res.Error = &api.KeyError{
|
||||
Err: fmt.Sprintf("a.DB.CrossSigningSigsForTarget: %s", err),
|
||||
}
|
||||
|
@ -372,9 +372,15 @@ func (a *KeyInternalAPI) queryRemoteKeys(
|
||||
|
||||
domains := map[string]struct{}{}
|
||||
for domain := range domainToDeviceKeys {
|
||||
if domain == string(a.ThisServer) {
|
||||
continue
|
||||
}
|
||||
domains[domain] = struct{}{}
|
||||
}
|
||||
for domain := range domainToCrossSigningKeys {
|
||||
if domain == string(a.ThisServer) {
|
||||
continue
|
||||
}
|
||||
domains[domain] = struct{}{}
|
||||
}
|
||||
wg.Add(len(domains))
|
||||
@ -406,17 +412,11 @@ func (a *KeyInternalAPI) queryRemoteKeys(
|
||||
}
|
||||
|
||||
for userID, body := range result.MasterKeys {
|
||||
switch b := body.CrossSigningBody.(type) {
|
||||
case *gomatrixserverlib.CrossSigningKey:
|
||||
res.MasterKeys[userID] = *b
|
||||
}
|
||||
res.MasterKeys[userID] = body
|
||||
}
|
||||
|
||||
for userID, body := range result.SelfSigningKeys {
|
||||
switch b := body.CrossSigningBody.(type) {
|
||||
case *gomatrixserverlib.CrossSigningKey:
|
||||
res.SelfSigningKeys[userID] = *b
|
||||
}
|
||||
res.SelfSigningKeys[userID] = body
|
||||
}
|
||||
|
||||
// TODO: do we want to persist these somewhere now
|
||||
@ -430,8 +430,12 @@ func (a *KeyInternalAPI) queryRemoteKeysOnServer(
|
||||
res *api.QueryKeysResponse,
|
||||
) {
|
||||
defer wg.Done()
|
||||
fedCtx, cancel := context.WithTimeout(ctx, timeout)
|
||||
defer cancel()
|
||||
fedCtx := ctx
|
||||
if timeout > 0 {
|
||||
var cancel context.CancelFunc
|
||||
fedCtx, cancel = context.WithTimeout(ctx, timeout)
|
||||
defer cancel()
|
||||
}
|
||||
// for users who we do not have any knowledge about, try to start doing device list updates for them
|
||||
// by hitting /users/devices - otherwise fallback to /keys/query which has nicer bulk properties but
|
||||
// lack a stream ID.
|
||||
|
@ -62,7 +62,7 @@ func AddRoutes(internalAPIMux *mux.Router, s api.KeyInternalAPI) {
|
||||
httputil.MakeInternalAPI("performUploadDeviceKeys", func(req *http.Request) util.JSONResponse {
|
||||
request := api.PerformUploadDeviceKeysRequest{}
|
||||
response := api.PerformUploadDeviceKeysResponse{}
|
||||
if err := json.NewDecoder(req.Body).Decode(&request.CrossSigningKeys); err != nil {
|
||||
if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
|
||||
return util.MessageResponse(http.StatusBadRequest, err.Error())
|
||||
}
|
||||
s.PerformUploadDeviceKeys(req.Context(), &request, &response)
|
||||
@ -73,7 +73,7 @@ func AddRoutes(internalAPIMux *mux.Router, s api.KeyInternalAPI) {
|
||||
httputil.MakeInternalAPI("performUploadDeviceSignatures", func(req *http.Request) util.JSONResponse {
|
||||
request := api.PerformUploadDeviceSignaturesRequest{}
|
||||
response := api.PerformUploadDeviceSignaturesResponse{}
|
||||
if err := json.NewDecoder(req.Body).Decode(&request.Signatures); err != nil {
|
||||
if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
|
||||
return util.MessageResponse(http.StatusBadRequest, err.Error())
|
||||
}
|
||||
s.PerformUploadDeviceSignatures(req.Context(), &request, &response)
|
||||
|
@ -553,3 +553,4 @@ Deleted & recreated backups are empty
|
||||
Can upload self-signing keys
|
||||
Fails to upload self-signing keys with no auth
|
||||
Fails to upload self-signing key without master key
|
||||
can fetch self-signing keys over federation
|
||||
|
Loading…
Reference in New Issue
Block a user