apps/examples/telnetd: Naming confusion fixed: shell vs telnetd

1 files changed, 256 insertions, 0 deletions

diff --git a/apps/examples/telnetd/telnetd.c b/apps/examples/telnetd/telnetd.c
new file mode 100644
index 000000000..351f466c6
--- /dev/null
+++ b/apps/examples/telnetd/telnetd.c
@@ -0,0 +1,256 @@
+/****************************************************************************
+ * examples/telnetd/telnetd.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * This is a leverage of similar logic from uIP:
+ *
+ *   Author: Adam Dunkels <adam@sics.se>
+ *   Copyright (c) 2003, Adam Dunkels.
+ *   All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <net/if.h>
+#include <arpa/inet.h>
+
+#include <apps/netutils/telnetd.h>
+#include <apps/netutils/uiplib.h>
+
+#include "telnetd.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct ptentry_s
+{
+  FAR const char *commandstr;
+  void (*pfunc)(int argc, char **argv);
+};
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+static void telnetd_help(int argc, char **argv);
+static void telnetd_quit(int argc, char **argv);
+static void telnetd_unknown(int argc, char **argv);
+static void telnetd_parse(FAR char *line, int len);
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct ptentry_s g_parsetab[] =
+{
+  {"help",  telnetd_help},
+  {"exit",  telnetd_quit},
+  {"?",     telnetd_help},
+  {NULL,    telnetd_unknown}
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name:  telnetd_help
+ ****************************************************************************/
+
+static void telnetd_help(int argc, char **argv)
+{
+  printf("Available commands:\n");
+  printf("  help, ? - show help\n");
+  printf("  exit    - exit shell\n");
+}
+
+/****************************************************************************
+ * Name:  telnetd_help
+ ****************************************************************************/
+
+static void telnetd_unknown(int argc, char **argv)
+{
+  if (argv[0])
+    {
+      printf("Unknown command: %s\n", argv[0]);
+    }
+}
+
+/****************************************************************************
+ * Name: telnetd_quit
+ ****************************************************************************/
+
+static void telnetd_quit(int argc, char **argv)
+{
+  printf("Bye!\n");
+  exit(0);
+}
+
+/****************************************************************************
+ * Name: telnetd_parse
+ ****************************************************************************/
+
+static void telnetd_parse(FAR char *line, int len)
+{
+  struct ptentry_s *entry;
+  FAR char *cmd;
+  FAR char *saveptr;
+
+  /* Get the command from the beginning the line */
+
+  cmd = strtok_r(line, " \t\n\r\f\v", &saveptr);
+  if (cmd)
+    {
+      /* Now find the matching command in the command table */
+
+      for (entry = g_parsetab; entry->commandstr != NULL; entry++)
+        {
+          if (strncmp(entry->commandstr, cmd, strlen(entry->commandstr)) == 0)
+            {
+             break;
+            }
+        }
+
+      entry->pfunc(1, &cmd);
+    }
+}
+
+/****************************************************************************
+ * Name: telnetd_session
+ ****************************************************************************/
+
+int telnetd_session(int argc, char *argv[])
+{
+  char line[128];
+
+  printf("uIP command shell -- NuttX style\n");
+  printf("Type '?' and return for help\n");
+
+  for (;;)
+    {
+      printf(SHELL_PROMPT);
+      fflush(stdout);
+
+      if (fgets(line, 128, stdin) == NULL)
+        {
+          break;
+        }
+
+      telnetd_parse(line, 128);
+    }
+
+  return 0;
+}
+
+/****************************************************************************
+ * Name: telnetd_netinit
+ ****************************************************************************/
+
+static void telnetd_netinit(void)
+{
+  struct in_addr addr;
+#ifdef CONFIG_EXAMPLES_TELNETD_NOMAC
+  uint8_t mac[IFHWADDRLEN];
+#endif
+
+/* Many embedded network interfaces must have a software assigned MAC */
+
+#ifdef CONFIG_EXAMPLES_TELNETD_NOMAC
+  mac[0] = 0x00;
+  mac[1] = 0xe0;
+  mac[2] = 0xde;
+  mac[3] = 0xad;
+  mac[4] = 0xbe;
+  mac[5] = 0xef;
+  uip_setmacaddr("eth0", mac);
+#endif
+
+  /* Set up our host address */
+
+  addr.s_addr = HTONL(CONFIG_EXAMPLES_TELNETD_IPADDR);
+  uip_sethostaddr("eth0", &addr);
+
+  /* Set up the default router address */
+
+  addr.s_addr = HTONL(CONFIG_EXAMPLES_TELNETD_DRIPADDR);
+  uip_setdraddr("eth0", &addr);
+
+  /* Setup the subnet mask */
+
+  addr.s_addr = HTONL(CONFIG_EXAMPLES_TELNETD_NETMASK);
+  uip_setnetmask("eth0", &addr);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int telnetd_main(int argc, char *argv[])
+{
+  struct telnetd_config_s config;
+  int ret;
+
+  /* Configure the network */
+
+  printf("telnetd_main: Initializing the network\n");
+  telnetd_netinit();
+
+  /* Configure the telnet daemon */
+
+  config.d_port      = HTONS(23);
+  config.d_priority  = CONFIG_EXAMPLES_TELNETD_DAEMONPRIO;
+  config.d_stacksize = CONFIG_EXAMPLES_TELNETD_DAEMONSTACKSIZE;
+  config.t_priority  = CONFIG_EXAMPLES_TELNETD_CLIENTPRIO;
+  config.t_stacksize = CONFIG_EXAMPLES_TELNETD_CLIENTSTACKSIZE;
+  config.t_entry     = telnetd_session;
+
+  /* Start the telnet daemon */
+
+  printf("telnetd_main: Starting the Telnet daemon\n");
+  ret = telnetd_start(&config);
+  if (ret < 0)
+    {
+      printf("Failed to tart the Telnet daemon\n");
+    }
+
+  printf("telnetd_main: Exiting\n");
+  return 0;
+}