/* * 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 * * $Id: shell-ping.c,v 1.5 2010/10/19 18:29:03 adamdunkels Exp $ */ #include #include #include "contiki.h" #include "shell.h" #include "contiki-net.h" /*---------------------------------------------------------------------------*/ PROCESS(shell_ping_process, "ping"); SHELL_COMMAND(ping_command, "ping", "ping : 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 { 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_ds6_if.cur_hop_limit; uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, dest_addr); uip_ds6_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); 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 = uip_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 as address", ""); PROCESS_EXIT(); } uiplib_ipaddrconv(data, &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); } /*---------------------------------------------------------------------------*/