1 files changed, 52 insertions, 0 deletions
diff --git a/src/lib-smtp/smtp-server-cmd-noop.c b/src/lib-smtp/smtp-server-cmd-noop.c
new file mode 100644
index 0000000..86e426f
--- /dev/null
+++ b/src/lib-smtp/smtp-server-cmd-noop.c
@@ -0,0 +1,52 @@
+/* Copyright (c) 2013-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "smtp-syntax.h"
+
+#include "smtp-server-private.h"
+
+/* NOOP command */
+
+void smtp_server_cmd_noop(struct smtp_server_cmd_ctx *cmd,
+			  const char *params)
+{
+	struct smtp_server_connection *conn = cmd->conn;
+	struct smtp_server_command *command = cmd->cmd;
+	const struct smtp_server_callbacks *callbacks = conn->callbacks;
+	const char *param, *error;
+	int ret;
+
+	/* "NOOP" [ SP String ] CRLF */
+	ret = smtp_string_parse(params, &param, &error);
+	if (ret < 0) {
+		smtp_server_reply(cmd, 501, "5.5.4",
+				  "Invalid string parameter: %s",
+				  error);
+		return;
+	}
+
+	smtp_server_command_input_lock(cmd);
+
+	smtp_server_command_ref(command);
+	if (callbacks != NULL && callbacks->conn_cmd_noop != NULL) {
+		/* specific implementation of NOOP command */
+		ret = callbacks->conn_cmd_noop(conn->context, cmd);
+		if (ret <= 0) {
+			i_assert(ret == 0 ||
+				 smtp_server_command_is_replied(command));
+			/* command is waiting for external event or it failed */
+			smtp_server_command_unref(&command);
+			return;
+		}
+	}
+	if (!smtp_server_command_is_replied(command))
+		smtp_server_cmd_noop_reply_success(cmd);
+	smtp_server_command_unref(&command);
+}
+
+void smtp_server_cmd_noop_reply_success(struct smtp_server_cmd_ctx *cmd)
+{
+       i_assert(cmd->cmd->reg->func == smtp_server_cmd_noop);
+
+       smtp_server_reply(cmd, 250, "2.0.0", "OK");
+}