| /**************************************************************************** |
| * examples/telnetd/shell.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 <apps/netutils/telnetd.h> |
| #include <apps/netutils/uiplib.h> |
| |
| #include "shell.h" |
| |
| /**************************************************************************** |
| * Definitions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Private Types |
| ****************************************************************************/ |
| |
| struct ptentry_s |
| { |
| FAR const char *commandstr; |
| void (*pfunc)(int argc, char **argv); |
| }; |
| |
| /**************************************************************************** |
| * Private Function Prototypes |
| ****************************************************************************/ |
| |
| static void shell_help(int argc, char **argv); |
| static void shell_quit(int argc, char **argv); |
| static void shell_unknown(int argc, char **argv); |
| static void shell_parse(FAR char *line, int len); |
| |
| /**************************************************************************** |
| * Private Data |
| ****************************************************************************/ |
| |
| static struct ptentry_s g_parsetab[] = |
| { |
| {"help", shell_help}, |
| {"exit", shell_quit}, |
| {"?", shell_help}, |
| {NULL, shell_unknown} |
| }; |
| |
| /**************************************************************************** |
| * Private Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: shell_help |
| ****************************************************************************/ |
| |
| static void shell_help(int argc, char **argv) |
| { |
| printf("Available commands:\n"); |
| printf(" help, ? - show help\n"); |
| printf(" exit - exit shell\n"); |
| } |
| |
| /**************************************************************************** |
| * Name: shell_help |
| ****************************************************************************/ |
| |
| static void shell_unknown(int argc, char **argv) |
| { |
| if (argv[0]) |
| { |
| printf("Unknown command: %s\n", argv[0]); |
| } |
| } |
| |
| /**************************************************************************** |
| * Name: shell_quit |
| ****************************************************************************/ |
| |
| static void shell_quit(int argc, char **argv) |
| { |
| printf("Bye!\n"); |
| exit(0); |
| } |
| |
| /**************************************************************************** |
| * Name: shell_parse |
| ****************************************************************************/ |
| |
| static void shell_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: shell_session |
| ****************************************************************************/ |
| |
| int shell_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; |
| } |
| |
| shell_parse(line, 128); |
| } |
| |
| return 0; |
| } |
| |
| /**************************************************************************** |
| * Name: shell_netinit |
| ****************************************************************************/ |
| |
| static void shell_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 shell_main(int argc, char *argv[]) |
| { |
| struct telnetd_config_s config; |
| int ret; |
| |
| /* Configure the network */ |
| |
| printf("shell_main: Initializing the network\n"); |
| shell_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 = shell_session; |
| |
| /* Start the telnet daemon */ |
| |
| printf("shell_main: Starting the Telnet daemon\n"); |
| ret = telnetd_start(&config); |
| if (ret < 0) |
| { |
| printf("Failed to tart the Telnet daemon\n"); |
| } |
| |
| printf("shell_main: Exiting\n"); |
| return 0; |
| } |