Add autoprovision accounts flag

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

proxy/pkg/middleware/account_uuid.go

@@ -104,7 +104,7 @@ func AccountUUID(opts ...Option) func(next http.Handler) http.Handler {
 				w.WriteHeader(http.StatusInternalServerError)
 			}
 			if status != 0 || account == nil {
-				if status == http.StatusNotFound {
+				if opt.AutoprovisionAccounts && status == http.StatusNotFound {
 					account, status = createAccount(l, claims, opt.AccountsClient)
 					if status != 0 {
 						w.WriteHeader(status)

proxy/pkg/middleware/options.go

@@ -1,9 +1,10 @@
 package middleware
 
 import (
-	settings "github.com/owncloud/ocis/settings/pkg/proto/v0"
 	"net/http"
 
+	settings "github.com/owncloud/ocis/settings/pkg/proto/v0"
+
 	gateway "github.com/cs3org/go-cs3apis/cs3/gateway/v1beta1"
 	acc "github.com/owncloud/ocis/accounts/pkg/proto/v0"
 	"github.com/owncloud/ocis/ocis-pkg/log"
@@ -36,6 +37,8 @@ type Options struct {
 	Store storepb.StoreService
 	// PreSignedURLConfig to configure the middleware
 	PreSignedURLConfig config.PreSignedURL
+	// AutoprovisionAccounts when an account does not exist.
+	AutoprovisionAccounts bool
 }
 
 // newOptions initializes the available default options.
@@ -118,3 +121,10 @@ func PreSignedURLConfig(cfg config.PreSignedURL) Option {
 		o.PreSignedURLConfig = cfg
 	}
 }
+
+// AutoprovisionAccounts provides a function to set the AutoprovisionAccounts config
+func AutoprovisionAccounts(val bool) Option {
+	return func(o *Options) {
+		o.AutoprovisionAccounts = val
+	}
+}