Unify LDAP config settings accross services

This adapts the storage service to the recent changes of the LDAP
settings in reva.

Also we define a new set of LDAP env variables that can be shared
between all LDAP related ocis services (graph, idp, storage-auth-basic,
storage-userprovider, storage-groupprovider, idm). This should simplify
the most LDAP based configurations considerably.

storage/pkg/command/authbasic.go

@@ -50,6 +50,13 @@ func AuthBasic(cfg *config.Config) *cli.Command {
 				Interface("reva-config", rcfg).
 				Msg("config")
 
+			if cfg.Reva.AuthProvider.Driver == "ldap" {
+				if err := waitForLDAPCA(logger, &cfg.Reva.LDAP); err != nil {
+					logger.Error().Err(err).Msg("The configured LDAP CA cert does not exist")
+					return err
+				}
+			}
+
 			gr.Add(func() error {
 				runtime.RunWithOptions(rcfg, pidFile, runtime.WithLogger(&logger.Logger))
 				return nil
@@ -113,25 +120,7 @@ func authBasicConfigFromStruct(c *cli.Context, cfg *config.Config) map[string]in
 						"json": map[string]interface{}{
 							"users": cfg.Reva.AuthProvider.JSON,
 						},
-						"ldap": map[string]interface{}{
-							"hostname":      cfg.Reva.LDAP.Hostname,
-							"port":          cfg.Reva.LDAP.Port,
-							"cacert":        cfg.Reva.LDAP.CACert,
-							"insecure":      cfg.Reva.LDAP.Insecure,
-							"base_dn":       cfg.Reva.LDAP.BaseDN,
-							"loginfilter":   cfg.Reva.LDAP.LoginFilter,
-							"bind_username": cfg.Reva.LDAP.BindDN,
-							"bind_password": cfg.Reva.LDAP.BindPassword,
-							"idp":           cfg.Reva.LDAP.IDP,
-							"gatewaysvc":    cfg.Reva.Gateway.Endpoint,
-							"schema": map[string]interface{}{
-								"dn":          "dn",
-								"uid":         cfg.Reva.LDAP.UserSchema.UID,
-								"mail":        cfg.Reva.LDAP.UserSchema.Mail,
-								"displayName": cfg.Reva.LDAP.UserSchema.DisplayName,
-								"cn":          cfg.Reva.LDAP.UserSchema.CN,
-							},
-						},
+						"ldap": ldapConfigFromString(cfg),
 						"owncloudsql": map[string]interface{}{
 							"dbusername":        cfg.Reva.UserOwnCloudSQL.DBUsername,
 							"dbpassword":        cfg.Reva.UserOwnCloudSQL.DBPassword,