sys/net/application_layer: add telnet_server

sys/Makefile

@@ -127,6 +127,9 @@ endif
 ifneq (,$(filter sock_dns,$(USEMODULE)))
   DIRS += net/application_layer/dns
 endif
+ifneq (,$(filter telnet_server,$(USEMODULE)))
+  DIRS += net/application_layer/telnet_server
+endif
 ifneq (,$(filter constfs,$(USEMODULE)))
   DIRS += fs/constfs
 endif

sys/include/net/telnet_server.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2019 Thomas Stilwell <[email protected]>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @defgroup    net_telnet_server    telnet server
+ * @ingroup     net
+ *
+ * @brief       telnet server
+ *
+ * @{
+ *
+ * @file
+ * @brief   telnet server definitions
+ *
+ * @author  Thomas Stilwell <[email protected]>
+ */
+
+#ifndef NET_TELNET_SERVER_H
+#define NET_TELNET_SERVER_H
+
+#include <errno.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include "net/gnrc/tcp.h"
+#include "shell.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief telnet server struct
+ */
+typedef struct {
+    uint16_t port;
+    gnrc_tcp_tcb_t tcb;
+    const shell_command_t *shell_commands; /* deprecated */
+} telnet_server_t;
+
+int telnet_start_server(telnet_server_t * telnet_server);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_TELNET_SERVER_H */
+/** @} */

sys/net/application_layer/telnet_server/Makefile

@@ -0,0 +1,2 @@
+MODULE=telnet_server
+include $(RIOTBASE)/Makefile.base