330 lines
11 KiB
C
330 lines
11 KiB
C
/****************************************************************************
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* apps/system/ping/ping.c
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*
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* Copyright (C) 2017-2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include "netutils/icmp_ping.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define ICMP_PING_DATALEN 56
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#define ICMP_NPINGS 10 /* Default number of pings */
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#define ICMP_POLL_DELAY 1000 /* 1 second in milliseconds */
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: show_usage
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****************************************************************************/
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static void show_usage(FAR const char *progname, int exitcode) noreturn_function;
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static void show_usage(FAR const char *progname, int exitcode)
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{
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#if defined(CONFIG_LIBC_NETDB) && defined(CONFIG_NETDB_DNSCLIENT)
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printf("\nUsage: %s [-c <count>] [-i <interval>] [-W <timeout>] [-s <size>] <hostname>\n", progname);
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printf(" %s -h\n", progname);
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printf("\nWhere:\n");
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printf(" <hostname> is either an IPv4 address or the name of the remote host\n");
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printf(" that is requested the ICMPv4 ECHO reply.\n");
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#else
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printf("\nUsage: %s [-c <count>] [-i <interval>] [-W <timeout>] [-s <size>] <ip-address>\n", progname);
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printf(" %s -h\n", progname);
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printf("\nWhere:\n");
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printf(" <ip-address> is the IPv4 address request the ICMP ECHO reply.\n");
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#endif
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printf(" -c <count> determines the number of pings. Default %u.\n",
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ICMP_NPINGS);
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printf(" -i <interval> is the default delay between pings (milliseconds).\n");
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printf(" Default %d.\n", ICMP_POLL_DELAY);
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printf(" -W <timeout> is the timeout for wait response (milliseconds).\n");
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printf(" Default %d.\n", ICMP_POLL_DELAY);
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printf(" -s <size> specifies the number of data bytes to be sent. Default %u.\n",
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ICMP_PING_DATALEN);
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printf(" -h shows this text and exits.\n");
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exit(exitcode);
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}
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/****************************************************************************
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* Name: ping_result
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****************************************************************************/
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static void ping_result(FAR const struct ping_result_s *result)
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{
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switch (result->code)
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{
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case ICMP_E_HOSTIP:
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fprintf(stderr, "ERROR: ping_gethostip(%s) failed\n",
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result->info->hostname);
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break;
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case ICMP_E_MEMORY:
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fprintf(stderr, "ERROR: Failed to allocate memory\n");
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break;
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case ICMP_E_SOCKET:
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fprintf(stderr, "ERROR: socket() failed: %d\n", result->extra);
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break;
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case ICMP_I_BEGIN:
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printf("PING %u.%u.%u.%u %u bytes of data\n",
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(result->dest.s_addr ) & 0xff,
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(result->dest.s_addr >> 8 ) & 0xff,
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(result->dest.s_addr >> 16) & 0xff,
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(result->dest.s_addr >> 24) & 0xff,
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result->info->datalen);
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break;
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case ICMP_E_SENDTO:
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fprintf(stderr, "ERROR: sendto failed at seqno %u: %d\n",
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result->seqno, result->extra);
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break;
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case ICMP_E_SENDSMALL:
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fprintf(stderr, "ERROR: sendto returned %d, expected %u\n",
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result->extra, result->outsize);
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break;
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case ICMP_E_POLL:
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fprintf(stderr, "ERROR: poll failed: %d\n", result->extra);
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break;
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case ICMP_W_TIMEOUT:
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printf("No response from %u.%u.%u.%u: icmp_seq=%u time=%d ms\n",
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(result->dest.s_addr ) & 0xff,
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(result->dest.s_addr >> 8 ) & 0xff,
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(result->dest.s_addr >> 16) & 0xff,
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(result->dest.s_addr >> 24) & 0xff,
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result->seqno, result->extra);
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break;
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case ICMP_E_RECVFROM:
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fprintf(stderr, "ERROR: recvfrom failed: %d\n", result->extra);
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break;
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case ICMP_E_RECVSMALL:
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fprintf(stderr, "ERROR: short ICMP packet: %d\n", result->extra);
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break;
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case ICMP_W_IDDIFF:
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fprintf(stderr,
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"WARNING: Ignoring ICMP reply with ID %d. "
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"Expected %u\n",
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result->extra, result->id);
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break;
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case ICMP_W_SEQNOBIG:
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fprintf(stderr,
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"WARNING: Ignoring ICMP reply to sequence %d. "
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"Expected <= %u\n",
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result->extra, result->seqno);
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break;
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case ICMP_W_SEQNOSMALL:
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fprintf(stderr, "WARNING: Received after timeout\n");
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break;
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case ICMP_I_ROUNDTRIP:
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printf("%u bytes from %u.%u.%u.%u: icmp_seq=%u time=%d ms\n",
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result->info->datalen,
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(result->dest.s_addr ) & 0xff,
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(result->dest.s_addr >> 8 ) & 0xff,
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(result->dest.s_addr >> 16) & 0xff,
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(result->dest.s_addr >> 24) & 0xff,
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result->seqno, result->extra);
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break;
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case ICMP_W_RECVBIG:
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fprintf(stderr,
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"WARNING: Ignoring ICMP reply with different payload "
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"size: %d vs %u\n",
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result->extra, result->outsize);
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break;
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case ICMP_W_DATADIFF:
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fprintf(stderr, "WARNING: Echoed data corrupted\n");
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break;
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case ICMP_W_TYPE:
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fprintf(stderr, "WARNING: ICMP packet with unknown type: %d\n",
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result->extra);
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break;
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case ICMP_I_FINISH:
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if (result->nrequests > 0)
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{
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unsigned int tmp;
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/* Calculate the percentage of lost packets */
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tmp = (100 * (result->nrequests - result->nreplies) +
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(result->nrequests >> 1)) /
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result->nrequests;
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printf("%u packets transmitted, %u received, %u%% packet loss, time %d ms\n",
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result->nrequests, result->nreplies, tmp, result->extra);
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}
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break;
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}
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#ifdef BUILD_MODULE
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int main(int argc, FAR char *argv[])
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#else
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int ping_main(int argc, char **argv)
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#endif
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{
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struct ping_info_s info;
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FAR char *endptr;
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int exitcode;
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int option;
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info.count = ICMP_NPINGS;
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info.datalen = ICMP_PING_DATALEN;
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info.delay = ICMP_POLL_DELAY;
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info.timeout = ICMP_POLL_DELAY;
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info.callback = ping_result;
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/* Parse command line options */
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exitcode = EXIT_FAILURE;
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while ((option = getopt(argc, argv, ":c:i:W:s:h")) != ERROR)
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{
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switch (option)
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{
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case 'c':
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{
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long count = strtol(optarg, &endptr, 10);
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if (count < 1 || count > UINT16_MAX)
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{
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fprintf(stderr, "ERROR: <count> out of range: %ld\n", count);
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goto errout_with_usage;
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}
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info.count = (uint16_t)count;
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}
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break;
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case 'i':
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{
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long delay = strtol(optarg, &endptr, 10);
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if (delay < 1 || delay > UINT16_MAX)
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{
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fprintf(stderr, "ERROR: <interval> out of range: %ld\n", delay);
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goto errout_with_usage;
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}
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info.delay = (int16_t)delay;
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}
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break;
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case 'W':
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{
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long timeout = strtol(optarg, &endptr, 10);
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if (timeout < 1 || timeout > UINT16_MAX)
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{
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fprintf(stderr, "ERROR: <timeout> out of range: %ld\n", timeout);
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goto errout_with_usage;
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}
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info.timeout = (int16_t)timeout;
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}
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break;
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case 's':
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{
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long datalen = strtol(optarg, &endptr, 10);
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if (datalen < 1 || datalen > UINT16_MAX)
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{
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fprintf(stderr, "ERROR: <size> out of range: %ld\n", datalen);
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goto errout_with_usage;
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}
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info.datalen = (uint16_t)datalen;
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}
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break;
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case 'h':
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exitcode = EXIT_SUCCESS;
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goto errout_with_usage;
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case ':':
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fprintf(stderr, "ERROR: Missing required argument\n");
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goto errout_with_usage;
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case '?':
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default:
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fprintf(stderr, "ERROR: Unrecognized option\n");
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goto errout_with_usage;
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}
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}
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/* There should be one final parameters remaining on the command line */
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if (optind >= argc)
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{
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printf("ERROR: Missing required <ip-address> argument\n");
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goto errout_with_usage;
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}
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info.hostname = argv[optind];
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icmp_ping(&info);
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return EXIT_SUCCESS;
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errout_with_usage:
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optind = 0;
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show_usage(argv[0], exitcode);
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return exitcode; /* Not reachable */
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}
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