mirror of
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188 lines
5.8 KiB
C
188 lines
5.8 KiB
C
/*
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* Copyright (c) 2004, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#include <string.h>
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#include <stddef.h>
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#include "contiki.h"
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#include "shell.h"
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#include "contiki-net.h"
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/*---------------------------------------------------------------------------*/
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PROCESS(shell_ping_process, "ping");
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SHELL_COMMAND(ping_command,
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"ping",
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"ping <host>: ping an IP host",
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&shell_ping_process);
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/*---------------------------------------------------------------------------*/
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#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
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#define UIP_ICMP_BUF ((struct uip_icmp_hdr *)&uip_buf[UIP_LLH_LEN + UIP_IPH_LEN])
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#define PING_DATALEN 16
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#define ICMP_ECHO_REPLY 0
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#define ICMP_ECHO 8
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#define ICMP6_ECHO_REPLY 129
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#define ICMP6_ECHO 128
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static uip_ipaddr_t remoteaddr;
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static unsigned char running;
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/*---------------------------------------------------------------------------*/
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static void
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send_ping(uip_ipaddr_t *dest_addr)
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#if UIP_CONF_IPV6
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{
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static uint16_t count;
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UIP_IP_BUF->vtc = 0x60;
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UIP_IP_BUF->tcflow = 1;
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UIP_IP_BUF->flow = 0;
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UIP_IP_BUF->proto = UIP_PROTO_ICMP6;
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UIP_IP_BUF->ttl = uip_ds6_if.cur_hop_limit;
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uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, dest_addr);
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uip_ds6_select_src(&UIP_IP_BUF->srcipaddr, &UIP_IP_BUF->destipaddr);
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UIP_ICMP_BUF->type = ICMP6_ECHO_REQUEST;
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UIP_ICMP_BUF->icode = 0;
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/* set identifier and sequence number to 0 */
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memset((uint8_t *)UIP_ICMP_BUF + UIP_ICMPH_LEN, 0, 4);
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/* put one byte of data */
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memset((uint8_t *)UIP_ICMP_BUF + UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN,
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count, PING_DATALEN);
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count++;
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uip_len = UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN +
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UIP_IPH_LEN + PING_DATALEN;
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UIP_IP_BUF->len[0] = (uint8_t)((uip_len - 40) >> 8);
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UIP_IP_BUF->len[1] = (uint8_t)((uip_len - 40) & 0x00ff);
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UIP_ICMP_BUF->icmpchksum = 0;
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UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
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tcpip_ipv6_output();
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}
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#else /* UIP_CONF_IPV6 */
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{
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static uint16_t ipid = 0;
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static uint16_t seqno = 0;
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UIP_IP_BUF->vhl = 0x45;
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UIP_IP_BUF->tos = 0;
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UIP_IP_BUF->ipoffset[0] = UIP_IP_BUF->ipoffset[1] = 0;
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++ipid;
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UIP_IP_BUF->ipid[0] = ipid >> 8;
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UIP_IP_BUF->ipid[1] = ipid & 0xff;
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UIP_IP_BUF->proto = UIP_PROTO_ICMP;
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UIP_IP_BUF->ttl = UIP_TTL;
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uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, dest_addr);
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uip_ipaddr_copy(&UIP_IP_BUF->srcipaddr, &uip_hostaddr);
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UIP_ICMP_BUF->type = ICMP_ECHO;
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UIP_ICMP_BUF->icode = 0;
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UIP_ICMP_BUF->id = 0xadad;
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UIP_ICMP_BUF->seqno = uip_htons(seqno++);
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uip_len = UIP_ICMPH_LEN + UIP_IPH_LEN + PING_DATALEN;
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UIP_IP_BUF->len[0] = (uint8_t)((uip_len) >> 8);
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UIP_IP_BUF->len[1] = (uint8_t)((uip_len) & 0x00ff);
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UIP_ICMP_BUF->icmpchksum = 0;
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UIP_ICMP_BUF->icmpchksum = ~uip_chksum((uint16_t *)&(UIP_ICMP_BUF->type),
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UIP_ICMPH_LEN + PING_DATALEN);
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/* Calculate IP checksum. */
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UIP_IP_BUF->ipchksum = 0;
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UIP_IP_BUF->ipchksum = ~(uip_ipchksum());
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tcpip_output();
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}
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#endif /* UIP_CONF_IPV6 */
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(shell_ping_process, ev, data)
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{
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static struct etimer e;
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struct shell_input *input;
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PROCESS_BEGIN();
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if(data == NULL) {
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shell_output_str(&ping_command,
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"ping <server>: server as address", "");
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PROCESS_EXIT();
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}
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uiplib_ipaddrconv(data, &remoteaddr);
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send_ping(&remoteaddr);
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running = 1;
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while(running) {
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etimer_set(&e, CLOCK_SECOND * 10);
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PROCESS_WAIT_EVENT();
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if(etimer_expired(&e)) {
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PROCESS_EXIT();
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}
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if(ev == shell_event_input) {
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input = data;
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if(input->len1 + input->len2 == 0) {
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PROCESS_EXIT();
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}
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#if 0
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} else if(ev == resolv_event_found) {
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/* Either found a hostname, or not. */
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if((char *)data != NULL &&
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resolv_lookup((char *)data) != NULL) {
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uip_ipaddr_copy(serveraddr, ipaddr);
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telnet_connect(&s, server, serveraddr, nick);
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} else {
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shell_output_str(&ping_command, "Host not found.", "");
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}
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#endif /* 0 */
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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void
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shell_ping_init(void)
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{
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shell_register_command(&ping_command);
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}
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/*---------------------------------------------------------------------------*/
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