// BlobDispatcher takes the request context and builds the appropriate handler
// for handling blob requests.
func BlobDispatcher(ctx *handlers.Context, r *http.Request) http.Handler {
reference := ctxu.GetStringValue(ctx, "vars.digest")
dgst, _ := digest.ParseDigest(reference)
blobHandler := &blobHandler{
Context: ctx,
Digest: dgst,
}
return gorillahandlers.MethodHandler{
"DELETE": http.HandlerFunc(blobHandler.Delete),
}
}
// getUserName attempts to resolve a username from the context and request. If
// a username cannot be resolved, the empty string is returned.
func getUserName(ctx context.Context, r *http.Request) string {
username := ctxu.GetStringValue(ctx, "auth.user.name")
// Fallback to request user with basic auth
if username == "" {
var ok bool
uname, _, ok := basicAuth(r)
if ok {
username = uname
}
}
return username
}
func getDigest(ctx context.Context) (dgst digest.Digest, err error) {
dgstStr := ctxu.GetStringValue(ctx, "vars.digest")
if dgstStr == "" {
ctxu.GetLogger(ctx).Errorf("digest not available")
return "", errDigestNotAvailable
}
d, err := digest.ParseDigest(dgstStr)
if err != nil {
ctxu.GetLogger(ctx).Errorf("error parsing digest=%q: %v", dgstStr, err)
return "", err
}
return d, nil
}
// configureEvents prepares the event sink for action.
func (app *App) configureEvents(configuration *configuration.Configuration) {
// Configure all of the endpoint sinks.
var sinks []notifications.Sink
for _, endpoint := range configuration.Notifications.Endpoints {
if endpoint.Disabled {
ctxu.GetLogger(app).Infof("endpoint %s disabled, skipping", endpoint.Name)
continue
}
ctxu.GetLogger(app).Infof("configuring endpoint %v (%v), timeout=%s, headers=%v", endpoint.Name, endpoint.URL, endpoint.Timeout, endpoint.Headers)
endpoint := notifications.NewEndpoint(endpoint.Name, endpoint.URL, notifications.EndpointConfig{
Timeout: endpoint.Timeout,
Threshold: endpoint.Threshold,
Backoff: endpoint.Backoff,
Headers: endpoint.Headers,
IgnoredMediaTypes: endpoint.IgnoredMediaTypes,
})
sinks = append(sinks, endpoint)
}
// NOTE(stevvooe): Moving to a new queuing implementation is as easy as
// replacing broadcaster with a rabbitmq implementation. It's recommended
// that the registry instances also act as the workers to keep deployment
// simple.
app.events.sink = notifications.NewBroadcaster(sinks...)
// Populate registry event source
hostname, err := os.Hostname()
if err != nil {
hostname = configuration.HTTP.Addr
} else {
// try to pick the port off the config
_, port, err := net.SplitHostPort(configuration.HTTP.Addr)
if err == nil {
hostname = net.JoinHostPort(hostname, port)
}
}
app.events.source = notifications.SourceRecord{
Addr: hostname,
InstanceID: ctxu.GetStringValue(app, "instance.id"),
}
}
func getUploadUUID(ctx context.Context) (uuid string) {
return ctxu.GetStringValue(ctx, "vars.uuid")
}
func getReference(ctx context.Context) (reference string) {
return ctxu.GetStringValue(ctx, "vars.reference")
}
func getName(ctx context.Context) (name string) {
return ctxu.GetStringValue(ctx, "vars.name")
}
// getToken handles authenticating the request and authorizing access to the
// requested scopes.
func (ts *tokenServer) getToken(ctx context.Context, w http.ResponseWriter, r *http.Request) {
context.GetLogger(ctx).Info("getToken")
params := r.URL.Query()
service := params.Get("service")
scopeSpecifiers := params["scope"]
var offline bool
if offlineStr := params.Get("offline_token"); offlineStr != "" {
var err error
offline, err = strconv.ParseBool(offlineStr)
if err != nil {
handleError(ctx, ErrorBadTokenOption.WithDetail(err), w)
return
}
}
requestedAccessList := ResolveScopeSpecifiers(ctx, scopeSpecifiers)
authorizedCtx, err := ts.accessController.Authorized(ctx, requestedAccessList...)
if err != nil {
challenge, ok := err.(auth.Challenge)
if !ok {
handleError(ctx, err, w)
return
}
// Get response context.
ctx, w = context.WithResponseWriter(ctx, w)
challenge.SetHeaders(w)
handleError(ctx, errcode.ErrorCodeUnauthorized.WithDetail(challenge.Error()), w)
context.GetResponseLogger(ctx).Info("get token authentication challenge")
return
}
ctx = authorizedCtx
username := context.GetStringValue(ctx, "auth.user.name")
ctx = context.WithValue(ctx, acctSubject{}, username)
ctx = context.WithLogger(ctx, context.GetLogger(ctx, acctSubject{}))
context.GetLogger(ctx).Info("authenticated client")
ctx = context.WithValue(ctx, requestedAccess{}, requestedAccessList)
ctx = context.WithLogger(ctx, context.GetLogger(ctx, requestedAccess{}))
grantedAccessList := filterAccessList(ctx, username, requestedAccessList)
ctx = context.WithValue(ctx, grantedAccess{}, grantedAccessList)
ctx = context.WithLogger(ctx, context.GetLogger(ctx, grantedAccess{}))
token, err := ts.issuer.CreateJWT(username, service, grantedAccessList)
if err != nil {
handleError(ctx, err, w)
return
}
context.GetLogger(ctx).Info("authorized client")
response := tokenResponse{
Token: token,
ExpiresIn: int(ts.issuer.Expiration.Seconds()),
}
if offline {
response.RefreshToken = newRefreshToken()
ts.refreshCache[response.RefreshToken] = refreshToken{
subject: username,
service: service,
}
}
ctx, w = context.WithResponseWriter(ctx, w)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(response)
context.GetResponseLogger(ctx).Info("get token complete")
}
// getToken handles authenticating the request and authorizing access to the
// requested scopes.
func (ts *tokenServer) getToken(ctx context.Context, w http.ResponseWriter, r *http.Request) {
context.GetLogger(ctx).Info("getToken")
params := r.URL.Query()
service := params.Get("service")
scopeSpecifiers := params["scope"]
requestedAccessList := ResolveScopeSpecifiers(ctx, scopeSpecifiers)
authorizedCtx, err := ts.accessController.Authorized(ctx, requestedAccessList...)
if err != nil {
challenge, ok := err.(auth.Challenge)
if !ok {
handleError(ctx, err, w)
return
}
// Get response context.
ctx, w = context.WithResponseWriter(ctx, w)
challenge.SetHeaders(w)
handleError(ctx, errcode.ErrorCodeUnauthorized.WithDetail(challenge.Error()), w)
context.GetResponseLogger(ctx).Info("get token authentication challenge")
return
}
ctx = authorizedCtx
username := context.GetStringValue(ctx, "auth.user.name")
ctx = context.WithValue(ctx, "acctSubject", username)
ctx = context.WithLogger(ctx, context.GetLogger(ctx, "acctSubject"))
context.GetLogger(ctx).Info("authenticated client")
ctx = context.WithValue(ctx, "requestedAccess", requestedAccessList)
ctx = context.WithLogger(ctx, context.GetLogger(ctx, "requestedAccess"))
scopePrefix := username + "/"
grantedAccessList := make([]auth.Access, 0, len(requestedAccessList))
for _, access := range requestedAccessList {
if access.Type != "repository" {
context.GetLogger(ctx).Debugf("Skipping unsupported resource type: %s", access.Type)
continue
}
if !strings.HasPrefix(access.Name, scopePrefix) {
context.GetLogger(ctx).Debugf("Resource scope not allowed: %s", access.Name)
continue
}
grantedAccessList = append(grantedAccessList, access)
}
ctx = context.WithValue(ctx, "grantedAccess", grantedAccessList)
ctx = context.WithLogger(ctx, context.GetLogger(ctx, "grantedAccess"))
token, err := ts.issuer.CreateJWT(username, service, grantedAccessList)
if err != nil {
handleError(ctx, err, w)
return
}
context.GetLogger(ctx).Info("authorized client")
// Get response context.
ctx, w = context.WithResponseWriter(ctx, w)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(map[string]string{"token": token})
context.GetResponseLogger(ctx).Info("get token complete")
}
