contiki/apps/shell/shell-ping.c

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/*
* Copyright (c) 2004, 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.
*
* This file is part of the Contiki operating system.
*
* Author: Adam Dunkels <adam@sics.se>
*
2009-03-07 09:32:41 +00:00
* $Id: shell-ping.c,v 1.2 2009/03/07 09:32:41 adamdunkels Exp $
*/
#include <string.h>
#include <stddef.h>
#include "contiki.h"
#include "shell.h"
#include "contiki-net.h"
/*---------------------------------------------------------------------------*/
PROCESS(shell_ping_process, "ping");
SHELL_COMMAND(ping_command,
"ping",
"ping <host>: ping an IP host",
&shell_ping_process);
/*---------------------------------------------------------------------------*/
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_ICMP_BUF ((struct uip_icmp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
#define PING_DATALEN 16
#define ICMP_ECHO_REPLY 0
#define ICMP_ECHO 8
#define ICMP6_ECHO_REPLY 129
#define ICMP6_ECHO 128
static uip_ipaddr_t remoteaddr;
static unsigned char running;
/*---------------------------------------------------------------------------*/
static void
send_ping(uip_ipaddr_t *dest_addr)
#if UIP_CONF_IPV6
{
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static uint16_t count;
UIP_IP_BUF->vtc = 0x60;
UIP_IP_BUF->tcflow = 1;
UIP_IP_BUF->flow = 0;
UIP_IP_BUF->proto = UIP_PROTO_ICMP6;
UIP_IP_BUF->ttl = uip_netif_physical_if.cur_hop_limit;
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uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, dest_addr);
uip_netif_select_src(&UIP_IP_BUF->srcipaddr, &UIP_IP_BUF->destipaddr);
UIP_ICMP_BUF->type = ICMP6_ECHO_REQUEST;
UIP_ICMP_BUF->icode = 0;
/* set identifier and sequence number to 0 */
memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN, 0, 4);
/* put one byte of data */
memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN,
count, PING_DATALEN);
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count++;
uip_len = UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN +
UIP_IPH_LEN + PING_DATALEN;
UIP_IP_BUF->len[0] = (u8_t)((uip_len - 40) >> 8);
UIP_IP_BUF->len[1] = (u8_t)((uip_len - 40) & 0x00ff);
UIP_ICMP_BUF->icmpchksum = 0;
UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
tcpip_ipv6_output();
}
#else /* UIP_CONF_IPV6 */
{
static uint16_t ipid = 0;
static uint16_t seqno = 0;
UIP_IP_BUF->vhl = 0x45;
UIP_IP_BUF->tos = 0;
UIP_IP_BUF->ipoffset[0] = UIP_IP_BUF->ipoffset[1] = 0;
++ipid;
UIP_IP_BUF->ipid[0] = ipid >> 8;
UIP_IP_BUF->ipid[1] = ipid & 0xff;
UIP_IP_BUF->proto = UIP_PROTO_ICMP;
UIP_IP_BUF->ttl = UIP_TTL;
uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, dest_addr);
uip_ipaddr_copy(&UIP_IP_BUF->srcipaddr, &uip_hostaddr);
UIP_ICMP_BUF->type = ICMP_ECHO;
UIP_ICMP_BUF->icode = 0;
UIP_ICMP_BUF->id = 0xadad;
UIP_ICMP_BUF->seqno = htons(seqno++);
uip_len = UIP_ICMPH_LEN + UIP_IPH_LEN + PING_DATALEN;
UIP_IP_BUF->len[0] = (u8_t)((uip_len) >> 8);
UIP_IP_BUF->len[1] = (u8_t)((uip_len) & 0x00ff);
UIP_ICMP_BUF->icmpchksum = 0;
UIP_ICMP_BUF->icmpchksum = ~uip_chksum((u16_t *)&(UIP_ICMP_BUF->type),
UIP_ICMPH_LEN + PING_DATALEN);
/* Calculate IP checksum. */
UIP_IP_BUF->ipchksum = 0;
UIP_IP_BUF->ipchksum = ~(uip_ipchksum());
tcpip_output();
}
#endif /* UIP_CONF_IPV6 */
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_ping_process, ev, data)
{
struct shell_input *input;
PROCESS_BEGIN();
if(data == NULL) {
shell_output_str(&ping_command,
"ping <server>: server as address", "");
PROCESS_EXIT();
}
uiplib_ipaddrconv(data, (u8_t *)&remoteaddr);
send_ping(&remoteaddr);
running = 1;
while(running) {
static struct etimer e;
etimer_set(&e, CLOCK_SECOND * 10);
PROCESS_WAIT_EVENT();
if(etimer_expired(&e)) {
PROCESS_EXIT();
}
if(ev == shell_event_input) {
input = data;
if(input->len1 + input->len2 == 0) {
PROCESS_EXIT();
}
#if 0
} else if(ev == resolv_event_found) {
/* Either found a hostname, or not. */
if((char *)data != NULL &&
resolv_lookup((char *)data) != NULL) {
uip_ipaddr_copy(serveraddr, ipaddr);
telnet_connect(&s, server, serveraddr, nick);
} else {
shell_output_str(&ping_command, "Host not found.", "");
}
#endif /* 0 */
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
void
shell_ping_init(void)
{
shell_register_command(&ping_command);
}
/*---------------------------------------------------------------------------*/