www.pudn.com > UIP09_ADSP-BF537_Blackfin_org.zip > telnetd-shell.c

/** 
 * \addtogroup telnetd 
 * @{ 
 */ 
 
/** 
 * \file 
 * An example telnet server shell 
 * \author Adam Dunkels  
 */ 
 
/* 
 * 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. The name of the author may not be used to endorse or promote 
 *    products derived from this software without specific prior 
 *    written permission.   
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.   
 * 
 * This file is part of the Contiki desktop OS. 
 * 
 * $Id: telnetd-shell.c,v 1.1.2.1 2003/10/06 22:56:22 adam Exp $ 
 * 
 */ 
 
#include "uip.h" 
#include "telnetd.h" 
#include  
 
struct ptentry { 
  char c; 
  void (* pfunc)(struct telnetd_state *s, char *str); 
}; 
 
/*-----------------------------------------------------------------------------------*/ 
static void 
parse(struct telnetd_state *s, register char *str, struct ptentry *t) 
{ 
  register struct ptentry *p; 
  char *sstr; 
 
  sstr = str; 
   
  /* Loop over the parse table entries in t in order to find one that 
     matches the first character in str. */ 
  for(p = t; p->c != 0; ++p) { 
    if(*str == p->c) { 
      /* Skip rest of the characters up to the first space. */ 
      while(*str != ' ') { 
	++str; 
      } 
 
      /* Skip all spaces.*/ 
      while(*str == ' ') { 
	++str; 
      } 
 
      /* Call parse table entry function and return. */ 
      p->pfunc(s, str); 
      return; 
    } 
  } 
 
  /* Did not find matching entry in parse table. We just call the 
     default handler supplied by the caller and return. */ 
  p->pfunc(s, str); 
} 
/*-----------------------------------------------------------------------------------*/ 
static void 
exitt(struct telnetd_state *s, char *str) 
{ 
  telnetd_close(s); 
} 
/*-----------------------------------------------------------------------------------*/ 
static void 
inttostr(register char *str, unsigned int i) 
{ 
  str[0] = '0' + i / 100; 
  if(str[0] == '0') { 
    str[0] = ' '; 
  } 
  str[1] = '0' + (i / 10) % 10; 
  if(str[1] == '0') { 
    str[1] = ' '; 
  } 
  str[2] = '0' + i % 10; 
  str[3] = ' '; 
  str[4] = 0; 
} 
/*-----------------------------------------------------------------------------------*/ 
static void 
stats(struct telnetd_state *s, char *strr) 
{ 
  char str[10]; 
 
  inttostr(str, uip_stat.ip.recv); 
  telnetd_output(s, "IP packets received ", str); 
  inttostr(str, uip_stat.ip.sent); 
  telnetd_output(s, "IP packets sent ", str); 
  inttostr(str, uip_stat.ip.drop); 
  telnetd_output(s, "IP packets dropped ", str); 
 
  inttostr(str, uip_stat.icmp.recv); 
  telnetd_output(s, "ICMP packets received ", str); 
  inttostr(str, uip_stat.icmp.sent); 
  telnetd_output(s, "ICMP packets sent ", str); 
  inttostr(str, uip_stat.icmp.drop); 
  telnetd_output(s, "ICMP packets dropped ", str); 
 
  inttostr(str, uip_stat.tcp.recv); 
  telnetd_output(s, "TCP packets received ", str); 
  inttostr(str, uip_stat.tcp.sent); 
  telnetd_output(s, "TCP packets sent ", str); 
  inttostr(str, uip_stat.tcp.drop); 
  telnetd_output(s, "TCP packets dropped ", str); 
  inttostr(str, uip_stat.tcp.rexmit); 
  telnetd_output(s, "TCP packets retransmitted ", str); 
  inttostr(str, uip_stat.tcp.synrst); 
  telnetd_output(s, "TCP connection attempts ", str); 
} 
/*-----------------------------------------------------------------------------------*/ 
static void 
help(struct telnetd_state *s, char *str) 
{ 
  telnetd_output(s, "Available commands:", ""); 
  telnetd_output(s, "stats - show uIP statistics", ""); 
  telnetd_output(s, "exit  - exit shell", "");   
  telnetd_output(s, "?     - show this help", "");         
} 
/*-----------------------------------------------------------------------------------*/ 
static void 
none(struct telnetd_state *s, char *str) 
{ 
  if(strlen(str) > 0) { 
    telnetd_output(s, "Unknown command", ""); 
  } 
} 
/*-----------------------------------------------------------------------------------*/ 
static struct ptentry configparsetab[] = 
  {{'s', stats}, 
   {'e', exitt}, 
   {'?', help}, 
 
   /* Default action */ 
   {0, none}}; 
/*-----------------------------------------------------------------------------------*/ 
void 
telnetd_connected(struct telnetd_state *s) 
{ 
  telnetd_output(s, "uIP command shell", ""); 
  telnetd_output(s, "Type '?' for help", "");   
  telnetd_prompt(s, "uIP-0.9> ");  
} 
/*-----------------------------------------------------------------------------------*/ 
void 
telnetd_input(struct telnetd_state *s, char *cmd) 
{ 
  parse(s, cmd, configparsetab); 
  telnetd_prompt(s, "uIP-0.9> ");  
} 
/*-----------------------------------------------------------------------------------*/