change default ocdav namespace

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

changelog/unreleased/change-default-namespace.md

@@ -0,0 +1,9 @@
+Change: use /home as default namespace
+
+Currently, cross storage etag propagation is not yet implemented, which prevents the desktop client from detecting changes via the PROPFIND to /. / is managed by the root storage provider which is independend of the home and oc storage providers. If a file changes in /home/foo, the etag change will only be propagated to the root of the home storage provider.
+
+This change jails users into the `/home` namespace, and allows configuring the namespace to use for the two webdav endpoints using the new environment variable `WEBDAV_NAMESPACE_JAIL` which affects both endpoints `/dav/files` and `/webdav`.
+
+This will allow us to focus on getting a single storage driver like eos or owncloud tested and better resembles what owncloud 10 does.
+
+To get back the global namespace, which ultimately is the goal, just set the above environment variable to `/`.

pkg/command/frontend.go

@@ -187,8 +187,8 @@ func Frontend(cfg *config.Config) *cli.Command {
 								"prefix":           "",
 								"chunk_folder":     "/var/tmp/revad/chunks",
 								"gateway":          cfg.Reva.Gateway.URL,
-								"files_namespace":  "/",
-								"webdav_namespace": "/",
+								"files_namespace":  cfg.Reva.OCDav.NamespaceJail,
+								"webdav_namespace": cfg.Reva.OCDav.NamespaceJail,
 							},
 							"ocs": map[string]interface{}{
 								"gateway": cfg.Reva.Gateway.URL,

pkg/config/config.go

@@ -178,6 +178,11 @@ type LDAPSchema struct {
 	CN          string
 }
 
+// OCDav defines the available ocdav configuration.
+type OCDav struct {
+	NamespaceJail string
+}
+
 // Reva defines the available reva configuration.
 type Reva struct {
 	// JWTSecret used to sign jwt tokens between services
@@ -186,6 +191,7 @@ type Reva struct {
 	TransferExpires int
 	OIDC            OIDC
 	LDAP            LDAP
+	OCDav           OCDav
 	Storages        StorageConfig
 	// Ports are used configure which services to start on which port
 	Frontend          Port

pkg/flagset/frontend.go

@@ -89,6 +89,16 @@ func FrontendWithConfig(cfg *config.Config) []cli.Flag {
 			Destination: &cfg.Reva.TransferSecret,
 		},
 
+		// OCDav
+
+		&cli.StringFlag{
+			Name:        "webdav-namespace-jail",
+			Value:       "/home/",
+			Usage:       "Namespace prefix for the webdav endpoints /dav/files and /webdav",
+			EnvVars:     []string{"WEBDAV_NAMESPACE_JAIL"},
+			Destination: &cfg.Reva.OCDav.NamespaceJail,
+		},
+
 		// OIDC
 
 		&cli.StringFlag{