[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini ping implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
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| 6 | *
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| 7 | * Adapted from the ping in netkit-base 0.10:
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| 8 | * Copyright (c) 1989 The Regents of the University of California.
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[1765] | 9 | * All rights reserved.
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[821] | 10 | *
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[1765] | 11 | * This code is derived from software contributed to Berkeley by
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| 12 | * Mike Muuss.
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| 13 | *
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[2725] | 14 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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[821] | 15 | */
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[1765] | 16 | /* from ping6.c:
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| 17 | * Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
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| 18 | *
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| 19 | * This version of ping is adapted from the ping in netkit-base 0.10,
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| 20 | * which is:
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| 21 | *
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| 22 | * Original copyright notice is retained at the end of this file.
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| 23 | *
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| 24 | * This version is an adaptation of ping.c from busybox.
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| 25 | * The code was modified by Bart Visscher <magick@linux-fan.com>
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| 26 | */
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[821] | 27 |
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[1765] | 28 | #include <net/if.h>
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[821] | 29 | #include <netinet/ip_icmp.h>
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[1765] | 30 | #include "libbb.h"
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[3621] | 31 | #include "common_bufsiz.h"
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[821] | 32 |
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[3232] | 33 | #ifdef __BIONIC__
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| 34 | /* should be in netinet/ip_icmp.h */
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| 35 | # define ICMP_DEST_UNREACH 3 /* Destination Unreachable */
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| 36 | # define ICMP_SOURCE_QUENCH 4 /* Source Quench */
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| 37 | # define ICMP_REDIRECT 5 /* Redirect (change route) */
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| 38 | # define ICMP_ECHO 8 /* Echo Request */
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| 39 | # define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */
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| 40 | # define ICMP_PARAMETERPROB 12 /* Parameter Problem */
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| 41 | # define ICMP_TIMESTAMP 13 /* Timestamp Request */
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| 42 | # define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */
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| 43 | # define ICMP_INFO_REQUEST 15 /* Information Request */
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| 44 | # define ICMP_INFO_REPLY 16 /* Information Reply */
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| 45 | # define ICMP_ADDRESS 17 /* Address Mask Request */
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| 46 | # define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */
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| 47 | #endif
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| 48 |
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| 49 | //config:config PING
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| 50 | //config: bool "ping"
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| 51 | //config: default y
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| 52 | //config: select PLATFORM_LINUX
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| 53 | //config: help
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| 54 | //config: ping uses the ICMP protocol's mandatory ECHO_REQUEST datagram to
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| 55 | //config: elicit an ICMP ECHO_RESPONSE from a host or gateway.
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| 56 | //config:
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| 57 | //config:config PING6
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| 58 | //config: bool "ping6"
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| 59 | //config: default y
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| 60 | //config: depends on FEATURE_IPV6 && PING
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| 61 | //config: help
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| 62 | //config: This will give you a ping that can talk IPv6.
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| 63 | //config:
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| 64 | //config:config FEATURE_FANCY_PING
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| 65 | //config: bool "Enable fancy ping output"
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| 66 | //config: default y
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| 67 | //config: depends on PING
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| 68 | //config: help
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| 69 | //config: Make the output from the ping applet include statistics, and at the
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| 70 | //config: same time provide full support for ICMP packets.
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| 71 |
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| 72 | /* Needs socket(AF_INET, SOCK_RAW, IPPROTO_ICMP), therefore BB_SUID_MAYBE: */
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| 73 | //applet:IF_PING(APPLET(ping, BB_DIR_BIN, BB_SUID_MAYBE))
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| 74 | //applet:IF_PING6(APPLET(ping6, BB_DIR_BIN, BB_SUID_MAYBE))
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| 75 |
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| 76 | //kbuild:lib-$(CONFIG_PING) += ping.o
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| 77 | //kbuild:lib-$(CONFIG_PING6) += ping.o
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| 78 |
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| 79 | //usage:#if !ENABLE_FEATURE_FANCY_PING
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| 80 | //usage:# define ping_trivial_usage
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| 81 | //usage: "HOST"
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| 82 | //usage:# define ping_full_usage "\n\n"
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| 83 | //usage: "Send ICMP ECHO_REQUEST packets to network hosts"
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| 84 | //usage:# define ping6_trivial_usage
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| 85 | //usage: "HOST"
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| 86 | //usage:# define ping6_full_usage "\n\n"
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| 87 | //usage: "Send ICMP ECHO_REQUEST packets to network hosts"
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| 88 | //usage:#else
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| 89 | //usage:# define ping_trivial_usage
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| 90 | //usage: "[OPTIONS] HOST"
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| 91 | //usage:# define ping_full_usage "\n\n"
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| 92 | //usage: "Send ICMP ECHO_REQUEST packets to network hosts\n"
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[3621] | 93 | //usage: IF_PING6(
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[3232] | 94 | //usage: "\n -4,-6 Force IP or IPv6 name resolution"
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[3621] | 95 | //usage: )
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[3232] | 96 | //usage: "\n -c CNT Send only CNT pings"
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| 97 | //usage: "\n -s SIZE Send SIZE data bytes in packets (default:56)"
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| 98 | //usage: "\n -t TTL Set TTL"
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| 99 | //usage: "\n -I IFACE/IP Use interface or IP address as source"
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| 100 | //usage: "\n -W SEC Seconds to wait for the first response (default:10)"
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| 101 | //usage: "\n (after all -c CNT packets are sent)"
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| 102 | //usage: "\n -w SEC Seconds until ping exits (default:infinite)"
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| 103 | //usage: "\n (can exit earlier with -c CNT)"
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[3621] | 104 | //usage: "\n -q Quiet, only display output at start"
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[3232] | 105 | //usage: "\n and when finished"
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[3621] | 106 | //usage: "\n -p Pattern to use for payload"
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[3232] | 107 | //usage:
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| 108 | //usage:# define ping6_trivial_usage
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| 109 | //usage: "[OPTIONS] HOST"
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| 110 | //usage:# define ping6_full_usage "\n\n"
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| 111 | //usage: "Send ICMP ECHO_REQUEST packets to network hosts\n"
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| 112 | //usage: "\n -c CNT Send only CNT pings"
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| 113 | //usage: "\n -s SIZE Send SIZE data bytes in packets (default:56)"
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| 114 | //usage: "\n -I IFACE/IP Use interface or IP address as source"
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[3621] | 115 | //usage: "\n -q Quiet, only display output at start"
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[3232] | 116 | //usage: "\n and when finished"
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[3621] | 117 | //usage: "\n -p Pattern to use for payload"
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[3232] | 118 | //usage:
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| 119 | //usage:#endif
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| 120 | //usage:
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| 121 | //usage:#define ping_example_usage
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| 122 | //usage: "$ ping localhost\n"
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| 123 | //usage: "PING slag (127.0.0.1): 56 data bytes\n"
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| 124 | //usage: "64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=20.1 ms\n"
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| 125 | //usage: "\n"
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| 126 | //usage: "--- debian ping statistics ---\n"
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| 127 | //usage: "1 packets transmitted, 1 packets received, 0% packet loss\n"
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| 128 | //usage: "round-trip min/avg/max = 20.1/20.1/20.1 ms\n"
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| 129 | //usage:#define ping6_example_usage
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| 130 | //usage: "$ ping6 ip6-localhost\n"
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| 131 | //usage: "PING ip6-localhost (::1): 56 data bytes\n"
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| 132 | //usage: "64 bytes from ::1: icmp6_seq=0 ttl=64 time=20.1 ms\n"
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| 133 | //usage: "\n"
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| 134 | //usage: "--- ip6-localhost ping statistics ---\n"
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| 135 | //usage: "1 packets transmitted, 1 packets received, 0% packet loss\n"
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| 136 | //usage: "round-trip min/avg/max = 20.1/20.1/20.1 ms\n"
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| 137 |
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[1765] | 138 | #if ENABLE_PING6
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[2725] | 139 | # include <netinet/icmp6.h>
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[1765] | 140 | /* I see RENUMBERED constants in bits/in.h - !!?
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| 141 | * What a fuck is going on with libc? Is it a glibc joke? */
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[2725] | 142 | # ifdef IPV6_2292HOPLIMIT
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| 143 | # undef IPV6_HOPLIMIT
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| 144 | # define IPV6_HOPLIMIT IPV6_2292HOPLIMIT
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| 145 | # endif
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[1765] | 146 | #endif
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[821] | 147 |
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| 148 | enum {
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| 149 | DEFDATALEN = 56,
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| 150 | MAXIPLEN = 60,
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| 151 | MAXICMPLEN = 76,
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| 152 | MAX_DUP_CHK = (8 * 128),
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| 153 | MAXWAIT = 10,
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[1765] | 154 | PINGINTERVAL = 1, /* 1 second */
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[3621] | 155 | pingsock = 0,
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[821] | 156 | };
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| 157 |
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[3621] | 158 | static void
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| 159 | #if ENABLE_PING6
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| 160 | create_icmp_socket(len_and_sockaddr *lsa)
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| 161 | #else
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| 162 | create_icmp_socket(void)
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| 163 | #define create_icmp_socket(lsa) create_icmp_socket()
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| 164 | #endif
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| 165 | {
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| 166 | int sock;
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| 167 | #if ENABLE_PING6
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| 168 | if (lsa->u.sa.sa_family == AF_INET6)
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| 169 | sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
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| 170 | else
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| 171 | #endif
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| 172 | sock = socket(AF_INET, SOCK_RAW, 1); /* 1 == ICMP */
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| 173 | if (sock < 0) {
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| 174 | if (errno == EPERM)
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| 175 | bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
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| 176 | bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
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| 177 | }
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| 178 |
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| 179 | xmove_fd(sock, pingsock);
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| 180 | }
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| 181 |
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[1765] | 182 | #if !ENABLE_FEATURE_FANCY_PING
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| 183 |
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[2725] | 184 | /* Simple version */
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[1765] | 185 |
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[2725] | 186 | struct globals {
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| 187 | char *hostname;
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| 188 | char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
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| 189 | } FIX_ALIASING;
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[3621] | 190 | #define G (*(struct globals*)bb_common_bufsiz1)
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| 191 | #define INIT_G() do { setup_common_bufsiz(); } while (0)
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[1765] | 192 |
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[2725] | 193 | static void noresp(int ign UNUSED_PARAM)
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[821] | 194 | {
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[2725] | 195 | printf("No response from %s\n", G.hostname);
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[821] | 196 | exit(EXIT_FAILURE);
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| 197 | }
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| 198 |
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[1765] | 199 | static void ping4(len_and_sockaddr *lsa)
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[821] | 200 | {
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| 201 | struct icmp *pkt;
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[3621] | 202 | int c;
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[821] | 203 |
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[2725] | 204 | pkt = (struct icmp *) G.packet;
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[3621] | 205 | /*memset(pkt, 0, sizeof(G.packet)); already is */
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[821] | 206 | pkt->icmp_type = ICMP_ECHO;
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[3232] | 207 | pkt->icmp_cksum = inet_cksum((uint16_t *) pkt, sizeof(G.packet));
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[821] | 208 |
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[2725] | 209 | xsendto(pingsock, G.packet, DEFDATALEN + ICMP_MINLEN, &lsa->u.sa, lsa->len);
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[821] | 210 |
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| 211 | /* listen for replies */
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| 212 | while (1) {
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[3621] | 213 | #if 0
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[821] | 214 | struct sockaddr_in from;
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| 215 | socklen_t fromlen = sizeof(from);
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| 216 |
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[2725] | 217 | c = recvfrom(pingsock, G.packet, sizeof(G.packet), 0,
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[1765] | 218 | (struct sockaddr *) &from, &fromlen);
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[3621] | 219 | #else
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| 220 | c = recv(pingsock, G.packet, sizeof(G.packet), 0);
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| 221 | #endif
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[1765] | 222 | if (c < 0) {
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| 223 | if (errno != EINTR)
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| 224 | bb_perror_msg("recvfrom");
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[821] | 225 | continue;
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| 226 | }
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| 227 | if (c >= 76) { /* ip + icmp */
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[2725] | 228 | struct iphdr *iphdr = (struct iphdr *) G.packet;
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[821] | 229 |
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[2725] | 230 | pkt = (struct icmp *) (G.packet + (iphdr->ihl << 2)); /* skip ip hdr */
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[821] | 231 | if (pkt->icmp_type == ICMP_ECHOREPLY)
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| 232 | break;
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| 233 | }
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| 234 | }
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[1765] | 235 | if (ENABLE_FEATURE_CLEAN_UP)
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| 236 | close(pingsock);
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[821] | 237 | }
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| 238 |
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[1765] | 239 | #if ENABLE_PING6
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| 240 | static void ping6(len_and_sockaddr *lsa)
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| 241 | {
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| 242 | struct icmp6_hdr *pkt;
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[3621] | 243 | int c;
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[1765] | 244 | int sockopt;
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| 245 |
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[2725] | 246 | pkt = (struct icmp6_hdr *) G.packet;
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[3621] | 247 | /*memset(pkt, 0, sizeof(G.packet)); already is */
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[1765] | 248 | pkt->icmp6_type = ICMP6_ECHO_REQUEST;
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| 249 |
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| 250 | sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
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[3621] | 251 | setsockopt_int(pingsock, SOL_RAW, IPV6_CHECKSUM, sockopt);
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[1765] | 252 |
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[2725] | 253 | xsendto(pingsock, G.packet, DEFDATALEN + sizeof(struct icmp6_hdr), &lsa->u.sa, lsa->len);
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[1765] | 254 |
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| 255 | /* listen for replies */
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| 256 | while (1) {
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[3621] | 257 | #if 0
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[1765] | 258 | struct sockaddr_in6 from;
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| 259 | socklen_t fromlen = sizeof(from);
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| 260 |
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[2725] | 261 | c = recvfrom(pingsock, G.packet, sizeof(G.packet), 0,
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[1765] | 262 | (struct sockaddr *) &from, &fromlen);
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[3621] | 263 | #else
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| 264 | c = recv(pingsock, G.packet, sizeof(G.packet), 0);
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| 265 | #endif
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[1765] | 266 | if (c < 0) {
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| 267 | if (errno != EINTR)
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| 268 | bb_perror_msg("recvfrom");
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| 269 | continue;
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| 270 | }
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[3621] | 271 | if (c >= ICMP_MINLEN) { /* icmp6_hdr */
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[1765] | 272 | if (pkt->icmp6_type == ICMP6_ECHO_REPLY)
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| 273 | break;
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| 274 | }
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| 275 | }
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| 276 | if (ENABLE_FEATURE_CLEAN_UP)
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| 277 | close(pingsock);
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| 278 | }
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| 279 | #endif
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| 280 |
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[2725] | 281 | #if !ENABLE_PING6
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| 282 | # define common_ping_main(af, argv) common_ping_main(argv)
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| 283 | #endif
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| 284 | static int common_ping_main(sa_family_t af, char **argv)
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[821] | 285 | {
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[1765] | 286 | len_and_sockaddr *lsa;
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[2725] | 287 |
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| 288 | INIT_G();
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| 289 |
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[1765] | 290 | #if ENABLE_PING6
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| 291 | while ((++argv)[0] && argv[0][0] == '-') {
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| 292 | if (argv[0][1] == '4') {
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| 293 | af = AF_INET;
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| 294 | continue;
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| 295 | }
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| 296 | if (argv[0][1] == '6') {
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| 297 | af = AF_INET6;
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| 298 | continue;
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| 299 | }
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| 300 | bb_show_usage();
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| 301 | }
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| 302 | #else
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[821] | 303 | argv++;
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[1765] | 304 | #endif
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| 305 |
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[2725] | 306 | G.hostname = *argv;
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| 307 | if (!G.hostname)
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[821] | 308 | bb_show_usage();
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[1765] | 309 |
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| 310 | #if ENABLE_PING6
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[2725] | 311 | lsa = xhost_and_af2sockaddr(G.hostname, 0, af);
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[1765] | 312 | #else
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[2725] | 313 | lsa = xhost_and_af2sockaddr(G.hostname, 0, AF_INET);
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[1765] | 314 | #endif
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| 315 | /* Set timer _after_ DNS resolution */
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| 316 | signal(SIGALRM, noresp);
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| 317 | alarm(5); /* give the host 5000ms to respond */
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| 318 |
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[3621] | 319 | create_icmp_socket(lsa);
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[1765] | 320 | #if ENABLE_PING6
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[2725] | 321 | if (lsa->u.sa.sa_family == AF_INET6)
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[1765] | 322 | ping6(lsa);
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| 323 | else
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| 324 | #endif
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| 325 | ping4(lsa);
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[2725] | 326 | printf("%s is alive!\n", G.hostname);
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[821] | 327 | return EXIT_SUCCESS;
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| 328 | }
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| 329 |
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[1765] | 330 |
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| 331 | #else /* FEATURE_FANCY_PING */
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| 332 |
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| 333 |
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[2725] | 334 | /* Full(er) version */
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[821] | 335 |
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[3621] | 336 | #define OPT_STRING ("qvc:s:t:w:W:I:np:4" IF_PING6("6"))
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[1765] | 337 | enum {
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| 338 | OPT_QUIET = 1 << 0,
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| 339 | OPT_VERBOSE = 1 << 1,
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| 340 | OPT_c = 1 << 2,
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| 341 | OPT_s = 1 << 3,
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[3232] | 342 | OPT_t = 1 << 4,
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| 343 | OPT_w = 1 << 5,
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| 344 | OPT_W = 1 << 6,
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| 345 | OPT_I = 1 << 7,
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[3621] | 346 | /*OPT_n = 1 << 8, - ignored */
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| 347 | OPT_p = 1 << 9,
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| 348 | OPT_IPV4 = 1 << 10,
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| 349 | OPT_IPV6 = (1 << 11) * ENABLE_PING6,
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[1765] | 350 | };
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[821] | 351 |
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[1765] | 352 |
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| 353 | struct globals {
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[2725] | 354 | int if_index;
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| 355 | char *str_I;
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[1765] | 356 | len_and_sockaddr *source_lsa;
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| 357 | unsigned datalen;
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[2725] | 358 | unsigned pingcount; /* must be int-sized */
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[3232] | 359 | unsigned opt_ttl;
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[2725] | 360 | unsigned long ntransmitted, nreceived, nrepeats;
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[1765] | 361 | uint16_t myid;
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[3621] | 362 | uint8_t pattern;
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[1765] | 363 | unsigned tmin, tmax; /* in us */
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| 364 | unsigned long long tsum; /* in us, sum of all times */
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[2725] | 365 | unsigned deadline;
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| 366 | unsigned timeout;
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| 367 | unsigned total_secs;
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| 368 | unsigned sizeof_rcv_packet;
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| 369 | char *rcv_packet; /* [datalen + MAXIPLEN + MAXICMPLEN] */
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| 370 | void *snd_packet; /* [datalen + ipv4/ipv6_const] */
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[1765] | 371 | const char *hostname;
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| 372 | const char *dotted;
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| 373 | union {
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| 374 | struct sockaddr sa;
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| 375 | struct sockaddr_in sin;
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| 376 | #if ENABLE_PING6
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| 377 | struct sockaddr_in6 sin6;
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[821] | 378 | #endif
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[1765] | 379 | } pingaddr;
|
---|
[3621] | 380 | unsigned char rcvd_tbl[MAX_DUP_CHK / 8];
|
---|
[2725] | 381 | } FIX_ALIASING;
|
---|
[3621] | 382 | #define G (*(struct globals*)bb_common_bufsiz1)
|
---|
[2725] | 383 | #define if_index (G.if_index )
|
---|
[1765] | 384 | #define source_lsa (G.source_lsa )
|
---|
[2725] | 385 | #define str_I (G.str_I )
|
---|
[1765] | 386 | #define datalen (G.datalen )
|
---|
| 387 | #define pingcount (G.pingcount )
|
---|
[3232] | 388 | #define opt_ttl (G.opt_ttl )
|
---|
[1765] | 389 | #define myid (G.myid )
|
---|
| 390 | #define tmin (G.tmin )
|
---|
| 391 | #define tmax (G.tmax )
|
---|
| 392 | #define tsum (G.tsum )
|
---|
[2725] | 393 | #define deadline (G.deadline )
|
---|
| 394 | #define timeout (G.timeout )
|
---|
| 395 | #define total_secs (G.total_secs )
|
---|
[1765] | 396 | #define hostname (G.hostname )
|
---|
| 397 | #define dotted (G.dotted )
|
---|
| 398 | #define pingaddr (G.pingaddr )
|
---|
| 399 | #define rcvd_tbl (G.rcvd_tbl )
|
---|
| 400 | #define INIT_G() do { \
|
---|
[3621] | 401 | setup_common_bufsiz(); \
|
---|
| 402 | BUILD_BUG_ON(sizeof(G) > COMMON_BUFSIZE); \
|
---|
[2725] | 403 | datalen = DEFDATALEN; \
|
---|
| 404 | timeout = MAXWAIT; \
|
---|
[1765] | 405 | tmin = UINT_MAX; \
|
---|
| 406 | } while (0)
|
---|
[821] | 407 |
|
---|
| 408 |
|
---|
[3621] | 409 | #define BYTE(bit) rcvd_tbl[(bit)>>3]
|
---|
| 410 | #define MASK(bit) (1 << ((bit) & 7))
|
---|
| 411 | #define SET(bit) (BYTE(bit) |= MASK(bit))
|
---|
| 412 | #define CLR(bit) (BYTE(bit) &= (~MASK(bit)))
|
---|
| 413 | #define TST(bit) (BYTE(bit) & MASK(bit))
|
---|
[1765] | 414 |
|
---|
[2725] | 415 | static void print_stats_and_exit(int junk) NORETURN;
|
---|
| 416 | static void print_stats_and_exit(int junk UNUSED_PARAM)
|
---|
[821] | 417 | {
|
---|
[3621] | 418 | unsigned long ul;
|
---|
| 419 | unsigned long nrecv;
|
---|
| 420 |
|
---|
[821] | 421 | signal(SIGINT, SIG_IGN);
|
---|
| 422 |
|
---|
[3621] | 423 | nrecv = G.nreceived;
|
---|
| 424 | printf("\n--- %s ping statistics ---\n"
|
---|
| 425 | "%lu packets transmitted, "
|
---|
| 426 | "%lu packets received, ",
|
---|
| 427 | hostname, G.ntransmitted, nrecv
|
---|
| 428 | );
|
---|
| 429 | if (G.nrepeats)
|
---|
| 430 | printf("%lu duplicates, ", G.nrepeats);
|
---|
| 431 | ul = G.ntransmitted;
|
---|
| 432 | if (ul != 0)
|
---|
| 433 | ul = (ul - nrecv) * 100 / ul;
|
---|
| 434 | printf("%lu%% packet loss\n", ul);
|
---|
[1765] | 435 | if (tmin != UINT_MAX) {
|
---|
[3621] | 436 | unsigned tavg = tsum / (nrecv + G.nrepeats);
|
---|
[1765] | 437 | printf("round-trip min/avg/max = %u.%03u/%u.%03u/%u.%03u ms\n",
|
---|
| 438 | tmin / 1000, tmin % 1000,
|
---|
| 439 | tavg / 1000, tavg % 1000,
|
---|
| 440 | tmax / 1000, tmax % 1000);
|
---|
| 441 | }
|
---|
[2725] | 442 | /* if condition is true, exit with 1 -- 'failure' */
|
---|
[3621] | 443 | exit(nrecv == 0 || (deadline && nrecv < pingcount));
|
---|
[821] | 444 | }
|
---|
| 445 |
|
---|
[3232] | 446 | static void sendping_tail(void (*sp)(int), int size_pkt)
|
---|
[821] | 447 | {
|
---|
[1765] | 448 | int sz;
|
---|
[821] | 449 |
|
---|
[3621] | 450 | CLR((uint16_t)G.ntransmitted % MAX_DUP_CHK);
|
---|
| 451 | G.ntransmitted++;
|
---|
[821] | 452 |
|
---|
[3232] | 453 | size_pkt += datalen;
|
---|
| 454 |
|
---|
[1765] | 455 | /* sizeof(pingaddr) can be larger than real sa size, but I think
|
---|
| 456 | * it doesn't matter */
|
---|
[3232] | 457 | sz = xsendto(pingsock, G.snd_packet, size_pkt, &pingaddr.sa, sizeof(pingaddr));
|
---|
[1765] | 458 | if (sz != size_pkt)
|
---|
| 459 | bb_error_msg_and_die(bb_msg_write_error);
|
---|
| 460 |
|
---|
[3621] | 461 | if (pingcount == 0 || deadline || G.ntransmitted < pingcount) {
|
---|
[2725] | 462 | /* Didn't send all pings yet - schedule next in 1s */
|
---|
| 463 | signal(SIGALRM, sp);
|
---|
| 464 | if (deadline) {
|
---|
| 465 | total_secs += PINGINTERVAL;
|
---|
| 466 | if (total_secs >= deadline)
|
---|
| 467 | signal(SIGALRM, print_stats_and_exit);
|
---|
| 468 | }
|
---|
[1765] | 469 | alarm(PINGINTERVAL);
|
---|
[2725] | 470 | } else { /* -c NN, and all NN are sent (and no deadline) */
|
---|
| 471 | /* Wait for the last ping to come back.
|
---|
| 472 | * -W timeout: wait for a response in seconds.
|
---|
| 473 | * Affects only timeout in absense of any responses,
|
---|
| 474 | * otherwise ping waits for two RTTs. */
|
---|
| 475 | unsigned expire = timeout;
|
---|
| 476 |
|
---|
[3621] | 477 | if (G.nreceived) {
|
---|
[2725] | 478 | /* approx. 2*tmax, in seconds (2 RTT) */
|
---|
| 479 | expire = tmax / (512*1024);
|
---|
| 480 | if (expire == 0)
|
---|
| 481 | expire = 1;
|
---|
| 482 | }
|
---|
| 483 | signal(SIGALRM, print_stats_and_exit);
|
---|
| 484 | alarm(expire);
|
---|
[1765] | 485 | }
|
---|
| 486 | }
|
---|
| 487 |
|
---|
[2725] | 488 | static void sendping4(int junk UNUSED_PARAM)
|
---|
[1765] | 489 | {
|
---|
[2725] | 490 | struct icmp *pkt = G.snd_packet;
|
---|
[1765] | 491 |
|
---|
[3621] | 492 | memset(pkt, G.pattern, datalen + ICMP_MINLEN + 4);
|
---|
[821] | 493 | pkt->icmp_type = ICMP_ECHO;
|
---|
[2725] | 494 | /*pkt->icmp_code = 0;*/
|
---|
| 495 | pkt->icmp_cksum = 0; /* cksum is calculated with this field set to 0 */
|
---|
[3621] | 496 | pkt->icmp_seq = htons(G.ntransmitted); /* don't ++ here, it can be a macro */
|
---|
[821] | 497 | pkt->icmp_id = myid;
|
---|
| 498 |
|
---|
[2725] | 499 | /* If datalen < 4, we store timestamp _past_ the packet,
|
---|
| 500 | * but it's ok - we allocated 4 extra bytes in xzalloc() just in case.
|
---|
| 501 | */
|
---|
[1765] | 502 | /*if (datalen >= 4)*/
|
---|
[2725] | 503 | /* No hton: we'll read it back on the same machine */
|
---|
[1765] | 504 | *(uint32_t*)&pkt->icmp_dun = monotonic_us();
|
---|
[821] | 505 |
|
---|
[3232] | 506 | pkt->icmp_cksum = inet_cksum((uint16_t *) pkt, datalen + ICMP_MINLEN);
|
---|
[821] | 507 |
|
---|
[3232] | 508 | sendping_tail(sendping4, ICMP_MINLEN);
|
---|
[1765] | 509 | }
|
---|
| 510 | #if ENABLE_PING6
|
---|
[2725] | 511 | static void sendping6(int junk UNUSED_PARAM)
|
---|
[1765] | 512 | {
|
---|
[2725] | 513 | struct icmp6_hdr *pkt = G.snd_packet;
|
---|
[821] | 514 |
|
---|
[3621] | 515 | memset(pkt, G.pattern, datalen + sizeof(struct icmp6_hdr) + 4);
|
---|
[1765] | 516 | pkt->icmp6_type = ICMP6_ECHO_REQUEST;
|
---|
[2725] | 517 | /*pkt->icmp6_code = 0;*/
|
---|
| 518 | /*pkt->icmp6_cksum = 0;*/
|
---|
[3621] | 519 | pkt->icmp6_seq = htons(G.ntransmitted); /* don't ++ here, it can be a macro */
|
---|
[1765] | 520 | pkt->icmp6_id = myid;
|
---|
| 521 |
|
---|
| 522 | /*if (datalen >= 4)*/
|
---|
[3621] | 523 | *(bb__aliased_uint32_t*)(&pkt->icmp6_data8[4]) = monotonic_us();
|
---|
[1765] | 524 |
|
---|
[3232] | 525 | //TODO? pkt->icmp_cksum = inet_cksum(...);
|
---|
[2725] | 526 |
|
---|
[3232] | 527 | sendping_tail(sendping6, sizeof(struct icmp6_hdr));
|
---|
[821] | 528 | }
|
---|
[1765] | 529 | #endif
|
---|
[821] | 530 |
|
---|
[1765] | 531 | static const char *icmp_type_name(int id)
|
---|
[821] | 532 | {
|
---|
| 533 | switch (id) {
|
---|
[1765] | 534 | case ICMP_ECHOREPLY: return "Echo Reply";
|
---|
| 535 | case ICMP_DEST_UNREACH: return "Destination Unreachable";
|
---|
| 536 | case ICMP_SOURCE_QUENCH: return "Source Quench";
|
---|
| 537 | case ICMP_REDIRECT: return "Redirect (change route)";
|
---|
| 538 | case ICMP_ECHO: return "Echo Request";
|
---|
| 539 | case ICMP_TIME_EXCEEDED: return "Time Exceeded";
|
---|
| 540 | case ICMP_PARAMETERPROB: return "Parameter Problem";
|
---|
| 541 | case ICMP_TIMESTAMP: return "Timestamp Request";
|
---|
| 542 | case ICMP_TIMESTAMPREPLY: return "Timestamp Reply";
|
---|
| 543 | case ICMP_INFO_REQUEST: return "Information Request";
|
---|
| 544 | case ICMP_INFO_REPLY: return "Information Reply";
|
---|
| 545 | case ICMP_ADDRESS: return "Address Mask Request";
|
---|
| 546 | case ICMP_ADDRESSREPLY: return "Address Mask Reply";
|
---|
| 547 | default: return "unknown ICMP type";
|
---|
[821] | 548 | }
|
---|
| 549 | }
|
---|
[1765] | 550 | #if ENABLE_PING6
|
---|
| 551 | /* RFC3542 changed some definitions from RFC2292 for no good reason, whee!
|
---|
| 552 | * the newer 3542 uses a MLD_ prefix where as 2292 uses ICMP6_ prefix */
|
---|
| 553 | #ifndef MLD_LISTENER_QUERY
|
---|
| 554 | # define MLD_LISTENER_QUERY ICMP6_MEMBERSHIP_QUERY
|
---|
| 555 | #endif
|
---|
| 556 | #ifndef MLD_LISTENER_REPORT
|
---|
| 557 | # define MLD_LISTENER_REPORT ICMP6_MEMBERSHIP_REPORT
|
---|
| 558 | #endif
|
---|
| 559 | #ifndef MLD_LISTENER_REDUCTION
|
---|
| 560 | # define MLD_LISTENER_REDUCTION ICMP6_MEMBERSHIP_REDUCTION
|
---|
| 561 | #endif
|
---|
| 562 | static const char *icmp6_type_name(int id)
|
---|
| 563 | {
|
---|
| 564 | switch (id) {
|
---|
| 565 | case ICMP6_DST_UNREACH: return "Destination Unreachable";
|
---|
| 566 | case ICMP6_PACKET_TOO_BIG: return "Packet too big";
|
---|
| 567 | case ICMP6_TIME_EXCEEDED: return "Time Exceeded";
|
---|
| 568 | case ICMP6_PARAM_PROB: return "Parameter Problem";
|
---|
| 569 | case ICMP6_ECHO_REPLY: return "Echo Reply";
|
---|
| 570 | case ICMP6_ECHO_REQUEST: return "Echo Request";
|
---|
| 571 | case MLD_LISTENER_QUERY: return "Listener Query";
|
---|
| 572 | case MLD_LISTENER_REPORT: return "Listener Report";
|
---|
| 573 | case MLD_LISTENER_REDUCTION: return "Listener Reduction";
|
---|
| 574 | default: return "unknown ICMP type";
|
---|
| 575 | }
|
---|
| 576 | }
|
---|
| 577 | #endif
|
---|
[821] | 578 |
|
---|
[1765] | 579 | static void unpack_tail(int sz, uint32_t *tp,
|
---|
| 580 | const char *from_str,
|
---|
| 581 | uint16_t recv_seq, int ttl)
|
---|
[821] | 582 | {
|
---|
[3621] | 583 | unsigned char *b, m;
|
---|
[1765] | 584 | const char *dupmsg = " (DUP!)";
|
---|
| 585 | unsigned triptime = triptime; /* for gcc */
|
---|
| 586 |
|
---|
| 587 | if (tp) {
|
---|
| 588 | /* (int32_t) cast is for hypothetical 64-bit unsigned */
|
---|
| 589 | /* (doesn't hurt 32-bit real-world anyway) */
|
---|
| 590 | triptime = (int32_t) ((uint32_t)monotonic_us() - *tp);
|
---|
| 591 | tsum += triptime;
|
---|
| 592 | if (triptime < tmin)
|
---|
| 593 | tmin = triptime;
|
---|
| 594 | if (triptime > tmax)
|
---|
| 595 | tmax = triptime;
|
---|
| 596 | }
|
---|
| 597 |
|
---|
[3621] | 598 | b = &BYTE(recv_seq % MAX_DUP_CHK);
|
---|
| 599 | m = MASK(recv_seq % MAX_DUP_CHK);
|
---|
| 600 | /*if TST(recv_seq % MAX_DUP_CHK):*/
|
---|
| 601 | if (*b & m) {
|
---|
| 602 | ++G.nrepeats;
|
---|
[1765] | 603 | } else {
|
---|
[3621] | 604 | /*SET(recv_seq % MAX_DUP_CHK):*/
|
---|
| 605 | *b |= m;
|
---|
| 606 | ++G.nreceived;
|
---|
[1765] | 607 | dupmsg += 7;
|
---|
| 608 | }
|
---|
| 609 |
|
---|
| 610 | if (option_mask32 & OPT_QUIET)
|
---|
| 611 | return;
|
---|
| 612 |
|
---|
| 613 | printf("%d bytes from %s: seq=%u ttl=%d", sz,
|
---|
| 614 | from_str, recv_seq, ttl);
|
---|
| 615 | if (tp)
|
---|
| 616 | printf(" time=%u.%03u ms", triptime / 1000, triptime % 1000);
|
---|
| 617 | puts(dupmsg);
|
---|
[2725] | 618 | fflush_all();
|
---|
[1765] | 619 | }
|
---|
| 620 | static void unpack4(char *buf, int sz, struct sockaddr_in *from)
|
---|
| 621 | {
|
---|
[821] | 622 | struct icmp *icmppkt;
|
---|
| 623 | struct iphdr *iphdr;
|
---|
[1765] | 624 | int hlen;
|
---|
[821] | 625 |
|
---|
[1765] | 626 | /* discard if too short */
|
---|
| 627 | if (sz < (datalen + ICMP_MINLEN))
|
---|
| 628 | return;
|
---|
[821] | 629 |
|
---|
| 630 | /* check IP header */
|
---|
| 631 | iphdr = (struct iphdr *) buf;
|
---|
| 632 | hlen = iphdr->ihl << 2;
|
---|
| 633 | sz -= hlen;
|
---|
| 634 | icmppkt = (struct icmp *) (buf + hlen);
|
---|
| 635 | if (icmppkt->icmp_id != myid)
|
---|
[1765] | 636 | return; /* not our ping */
|
---|
[821] | 637 |
|
---|
| 638 | if (icmppkt->icmp_type == ICMP_ECHOREPLY) {
|
---|
[1765] | 639 | uint16_t recv_seq = ntohs(icmppkt->icmp_seq);
|
---|
| 640 | uint32_t *tp = NULL;
|
---|
[821] | 641 |
|
---|
[1765] | 642 | if (sz >= ICMP_MINLEN + sizeof(uint32_t))
|
---|
| 643 | tp = (uint32_t *) icmppkt->icmp_data;
|
---|
| 644 | unpack_tail(sz, tp,
|
---|
| 645 | inet_ntoa(*(struct in_addr *) &from->sin_addr.s_addr),
|
---|
| 646 | recv_seq, iphdr->ttl);
|
---|
| 647 | } else if (icmppkt->icmp_type != ICMP_ECHO) {
|
---|
| 648 | bb_error_msg("warning: got ICMP %d (%s)",
|
---|
| 649 | icmppkt->icmp_type,
|
---|
| 650 | icmp_type_name(icmppkt->icmp_type));
|
---|
| 651 | }
|
---|
| 652 | }
|
---|
| 653 | #if ENABLE_PING6
|
---|
[3232] | 654 | static void unpack6(char *packet, int sz, struct sockaddr_in6 *from, int hoplimit)
|
---|
[1765] | 655 | {
|
---|
| 656 | struct icmp6_hdr *icmppkt;
|
---|
| 657 | char buf[INET6_ADDRSTRLEN];
|
---|
[821] | 658 |
|
---|
[1765] | 659 | /* discard if too short */
|
---|
| 660 | if (sz < (datalen + sizeof(struct icmp6_hdr)))
|
---|
| 661 | return;
|
---|
[821] | 662 |
|
---|
[1765] | 663 | icmppkt = (struct icmp6_hdr *) packet;
|
---|
| 664 | if (icmppkt->icmp6_id != myid)
|
---|
| 665 | return; /* not our ping */
|
---|
[821] | 666 |
|
---|
[1765] | 667 | if (icmppkt->icmp6_type == ICMP6_ECHO_REPLY) {
|
---|
| 668 | uint16_t recv_seq = ntohs(icmppkt->icmp6_seq);
|
---|
| 669 | uint32_t *tp = NULL;
|
---|
[821] | 670 |
|
---|
[1765] | 671 | if (sz >= sizeof(struct icmp6_hdr) + sizeof(uint32_t))
|
---|
| 672 | tp = (uint32_t *) &icmppkt->icmp6_data8[4];
|
---|
| 673 | unpack_tail(sz, tp,
|
---|
[3232] | 674 | inet_ntop(AF_INET6, &from->sin6_addr,
|
---|
[1765] | 675 | buf, sizeof(buf)),
|
---|
| 676 | recv_seq, hoplimit);
|
---|
| 677 | } else if (icmppkt->icmp6_type != ICMP6_ECHO_REQUEST) {
|
---|
| 678 | bb_error_msg("warning: got ICMP %d (%s)",
|
---|
| 679 | icmppkt->icmp6_type,
|
---|
| 680 | icmp6_type_name(icmppkt->icmp6_type));
|
---|
| 681 | }
|
---|
[821] | 682 | }
|
---|
[1765] | 683 | #endif
|
---|
[821] | 684 |
|
---|
[1765] | 685 | static void ping4(len_and_sockaddr *lsa)
|
---|
[821] | 686 | {
|
---|
| 687 | int sockopt;
|
---|
| 688 |
|
---|
[2725] | 689 | pingaddr.sin = lsa->u.sin;
|
---|
[1765] | 690 | if (source_lsa) {
|
---|
| 691 | if (setsockopt(pingsock, IPPROTO_IP, IP_MULTICAST_IF,
|
---|
[2725] | 692 | &source_lsa->u.sa, source_lsa->len))
|
---|
[1765] | 693 | bb_error_msg_and_die("can't set multicast source interface");
|
---|
[2725] | 694 | xbind(pingsock, &source_lsa->u.sa, source_lsa->len);
|
---|
[1765] | 695 | }
|
---|
[821] | 696 |
|
---|
[1765] | 697 | /* enable broadcast pings */
|
---|
| 698 | setsockopt_broadcast(pingsock);
|
---|
[821] | 699 |
|
---|
[2725] | 700 | /* set recv buf (needed if we can get lots of responses: flood ping,
|
---|
| 701 | * broadcast ping etc) */
|
---|
| 702 | sockopt = (datalen * 2) + 7 * 1024; /* giving it a bit of extra room */
|
---|
[3621] | 703 | setsockopt_SOL_SOCKET_int(pingsock, SO_RCVBUF, sockopt);
|
---|
[821] | 704 |
|
---|
[3232] | 705 | if (opt_ttl != 0) {
|
---|
[3621] | 706 | setsockopt_int(pingsock, IPPROTO_IP, IP_TTL, opt_ttl);
|
---|
[3232] | 707 | /* above doesnt affect packets sent to bcast IP, so... */
|
---|
[3621] | 708 | setsockopt_int(pingsock, IPPROTO_IP, IP_MULTICAST_TTL, opt_ttl);
|
---|
[3232] | 709 | }
|
---|
| 710 |
|
---|
[2725] | 711 | signal(SIGINT, print_stats_and_exit);
|
---|
[821] | 712 |
|
---|
[1765] | 713 | /* start the ping's going ... */
|
---|
| 714 | sendping4(0);
|
---|
| 715 |
|
---|
| 716 | /* listen for replies */
|
---|
| 717 | while (1) {
|
---|
| 718 | struct sockaddr_in from;
|
---|
| 719 | socklen_t fromlen = (socklen_t) sizeof(from);
|
---|
| 720 | int c;
|
---|
| 721 |
|
---|
[2725] | 722 | c = recvfrom(pingsock, G.rcv_packet, G.sizeof_rcv_packet, 0,
|
---|
[1765] | 723 | (struct sockaddr *) &from, &fromlen);
|
---|
| 724 | if (c < 0) {
|
---|
| 725 | if (errno != EINTR)
|
---|
| 726 | bb_perror_msg("recvfrom");
|
---|
| 727 | continue;
|
---|
| 728 | }
|
---|
[2725] | 729 | unpack4(G.rcv_packet, c, &from);
|
---|
[3621] | 730 | if (pingcount && G.nreceived >= pingcount)
|
---|
[1765] | 731 | break;
|
---|
| 732 | }
|
---|
| 733 | }
|
---|
| 734 | #if ENABLE_PING6
|
---|
| 735 | static void ping6(len_and_sockaddr *lsa)
|
---|
| 736 | {
|
---|
| 737 | int sockopt;
|
---|
| 738 | struct msghdr msg;
|
---|
| 739 | struct sockaddr_in6 from;
|
---|
| 740 | struct iovec iov;
|
---|
| 741 | char control_buf[CMSG_SPACE(36)];
|
---|
| 742 |
|
---|
[2725] | 743 | pingaddr.sin6 = lsa->u.sin6;
|
---|
[1765] | 744 | if (source_lsa)
|
---|
[2725] | 745 | xbind(pingsock, &source_lsa->u.sa, source_lsa->len);
|
---|
[1765] | 746 |
|
---|
| 747 | #ifdef ICMP6_FILTER
|
---|
| 748 | {
|
---|
| 749 | struct icmp6_filter filt;
|
---|
| 750 | if (!(option_mask32 & OPT_VERBOSE)) {
|
---|
| 751 | ICMP6_FILTER_SETBLOCKALL(&filt);
|
---|
| 752 | ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
|
---|
| 753 | } else {
|
---|
| 754 | ICMP6_FILTER_SETPASSALL(&filt);
|
---|
| 755 | }
|
---|
| 756 | if (setsockopt(pingsock, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
|
---|
[3232] | 757 | sizeof(filt)) < 0)
|
---|
[3621] | 758 | bb_error_msg_and_die("setsockopt(%s)", "ICMP6_FILTER");
|
---|
[1765] | 759 | }
|
---|
| 760 | #endif /*ICMP6_FILTER*/
|
---|
| 761 |
|
---|
[821] | 762 | /* enable broadcast pings */
|
---|
[1765] | 763 | setsockopt_broadcast(pingsock);
|
---|
[821] | 764 |
|
---|
[2725] | 765 | /* set recv buf (needed if we can get lots of responses: flood ping,
|
---|
| 766 | * broadcast ping etc) */
|
---|
| 767 | sockopt = (datalen * 2) + 7 * 1024; /* giving it a bit of extra room */
|
---|
[3621] | 768 | setsockopt_SOL_SOCKET_int(pingsock, SO_RCVBUF, sockopt);
|
---|
[821] | 769 |
|
---|
[1765] | 770 | sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
|
---|
[3621] | 771 | BUILD_BUG_ON(offsetof(struct icmp6_hdr, icmp6_cksum) != 2);
|
---|
| 772 | setsockopt_int(pingsock, SOL_RAW, IPV6_CHECKSUM, sockopt);
|
---|
[821] | 773 |
|
---|
[1765] | 774 | /* request ttl info to be returned in ancillary data */
|
---|
[3621] | 775 | setsockopt_1(pingsock, SOL_IPV6, IPV6_HOPLIMIT);
|
---|
[1765] | 776 |
|
---|
| 777 | if (if_index)
|
---|
| 778 | pingaddr.sin6.sin6_scope_id = if_index;
|
---|
| 779 |
|
---|
[2725] | 780 | signal(SIGINT, print_stats_and_exit);
|
---|
[821] | 781 |
|
---|
| 782 | /* start the ping's going ... */
|
---|
[1765] | 783 | sendping6(0);
|
---|
[821] | 784 |
|
---|
| 785 | /* listen for replies */
|
---|
[1765] | 786 | msg.msg_name = &from;
|
---|
| 787 | msg.msg_namelen = sizeof(from);
|
---|
| 788 | msg.msg_iov = &iov;
|
---|
| 789 | msg.msg_iovlen = 1;
|
---|
| 790 | msg.msg_control = control_buf;
|
---|
[2725] | 791 | iov.iov_base = G.rcv_packet;
|
---|
| 792 | iov.iov_len = G.sizeof_rcv_packet;
|
---|
[821] | 793 | while (1) {
|
---|
| 794 | int c;
|
---|
[1765] | 795 | struct cmsghdr *mp;
|
---|
| 796 | int hoplimit = -1;
|
---|
| 797 | msg.msg_controllen = sizeof(control_buf);
|
---|
[821] | 798 |
|
---|
[1765] | 799 | c = recvmsg(pingsock, &msg, 0);
|
---|
| 800 | if (c < 0) {
|
---|
| 801 | if (errno != EINTR)
|
---|
| 802 | bb_perror_msg("recvfrom");
|
---|
[821] | 803 | continue;
|
---|
| 804 | }
|
---|
[1765] | 805 | for (mp = CMSG_FIRSTHDR(&msg); mp; mp = CMSG_NXTHDR(&msg, mp)) {
|
---|
| 806 | if (mp->cmsg_level == SOL_IPV6
|
---|
| 807 | && mp->cmsg_type == IPV6_HOPLIMIT
|
---|
| 808 | /* don't check len - we trust the kernel: */
|
---|
| 809 | /* && mp->cmsg_len >= CMSG_LEN(sizeof(int)) */
|
---|
| 810 | ) {
|
---|
[2725] | 811 | /*hoplimit = *(int*)CMSG_DATA(mp); - unaligned access */
|
---|
| 812 | move_from_unaligned_int(hoplimit, CMSG_DATA(mp));
|
---|
[1765] | 813 | }
|
---|
| 814 | }
|
---|
[3232] | 815 | unpack6(G.rcv_packet, c, &from, hoplimit);
|
---|
[3621] | 816 | if (pingcount && G.nreceived >= pingcount)
|
---|
[821] | 817 | break;
|
---|
| 818 | }
|
---|
| 819 | }
|
---|
[1765] | 820 | #endif
|
---|
[821] | 821 |
|
---|
[1765] | 822 | static void ping(len_and_sockaddr *lsa)
|
---|
| 823 | {
|
---|
| 824 | printf("PING %s (%s)", hostname, dotted);
|
---|
| 825 | if (source_lsa) {
|
---|
| 826 | printf(" from %s",
|
---|
[2725] | 827 | xmalloc_sockaddr2dotted_noport(&source_lsa->u.sa));
|
---|
[1765] | 828 | }
|
---|
| 829 | printf(": %d data bytes\n", datalen);
|
---|
| 830 |
|
---|
[3621] | 831 | create_icmp_socket(lsa);
|
---|
| 832 | /* untested whether "-I addr" really works for IPv6: */
|
---|
| 833 | if (str_I)
|
---|
| 834 | setsockopt_bindtodevice(pingsock, str_I);
|
---|
| 835 |
|
---|
[2725] | 836 | G.sizeof_rcv_packet = datalen + MAXIPLEN + MAXICMPLEN;
|
---|
| 837 | G.rcv_packet = xzalloc(G.sizeof_rcv_packet);
|
---|
[1765] | 838 | #if ENABLE_PING6
|
---|
[2725] | 839 | if (lsa->u.sa.sa_family == AF_INET6) {
|
---|
| 840 | /* +4 reserves a place for timestamp, which may end up sitting
|
---|
| 841 | * _after_ packet. Saves one if() - see sendping4/6() */
|
---|
| 842 | G.snd_packet = xzalloc(datalen + sizeof(struct icmp6_hdr) + 4);
|
---|
[1765] | 843 | ping6(lsa);
|
---|
[2725] | 844 | } else
|
---|
[1765] | 845 | #endif
|
---|
[2725] | 846 | {
|
---|
| 847 | G.snd_packet = xzalloc(datalen + ICMP_MINLEN + 4);
|
---|
[1765] | 848 | ping4(lsa);
|
---|
[2725] | 849 | }
|
---|
[1765] | 850 | }
|
---|
| 851 |
|
---|
[2725] | 852 | static int common_ping_main(int opt, char **argv)
|
---|
[821] | 853 | {
|
---|
[1765] | 854 | len_and_sockaddr *lsa;
|
---|
[3621] | 855 | char *str_s, *str_p;
|
---|
[821] | 856 |
|
---|
[1765] | 857 | INIT_G();
|
---|
| 858 |
|
---|
[3232] | 859 | /* exactly one argument needed; -v and -q don't mix; -c NUM, -t NUM, -w NUM, -W NUM */
|
---|
| 860 | opt_complementary = "=1:q--v:v--q:c+:t+:w+:W+";
|
---|
[3621] | 861 | opt |= getopt32(argv, OPT_STRING, &pingcount, &str_s, &opt_ttl, &deadline, &timeout, &str_I, &str_p);
|
---|
[2725] | 862 | if (opt & OPT_s)
|
---|
| 863 | datalen = xatou16(str_s); // -s
|
---|
| 864 | if (opt & OPT_I) { // -I
|
---|
| 865 | if_index = if_nametoindex(str_I);
|
---|
[1765] | 866 | if (!if_index) {
|
---|
| 867 | /* TODO: I'm not sure it takes IPv6 unless in [XX:XX..] format */
|
---|
[2725] | 868 | source_lsa = xdotted2sockaddr(str_I, 0);
|
---|
| 869 | str_I = NULL; /* don't try to bind to device later */
|
---|
[821] | 870 | }
|
---|
| 871 | }
|
---|
[3621] | 872 | if (opt & OPT_p)
|
---|
| 873 | G.pattern = xstrtou_range(str_p, 16, 0, 255);
|
---|
| 874 |
|
---|
[1765] | 875 | myid = (uint16_t) getpid();
|
---|
| 876 | hostname = argv[optind];
|
---|
| 877 | #if ENABLE_PING6
|
---|
[2725] | 878 | {
|
---|
| 879 | sa_family_t af = AF_UNSPEC;
|
---|
| 880 | if (opt & OPT_IPV4)
|
---|
| 881 | af = AF_INET;
|
---|
| 882 | if (opt & OPT_IPV6)
|
---|
| 883 | af = AF_INET6;
|
---|
| 884 | lsa = xhost_and_af2sockaddr(hostname, 0, af);
|
---|
| 885 | }
|
---|
[1765] | 886 | #else
|
---|
| 887 | lsa = xhost_and_af2sockaddr(hostname, 0, AF_INET);
|
---|
| 888 | #endif
|
---|
[821] | 889 |
|
---|
[2725] | 890 | if (source_lsa && source_lsa->u.sa.sa_family != lsa->u.sa.sa_family)
|
---|
[1765] | 891 | /* leaking it here... */
|
---|
| 892 | source_lsa = NULL;
|
---|
| 893 |
|
---|
[2725] | 894 | dotted = xmalloc_sockaddr2dotted_noport(&lsa->u.sa);
|
---|
[1765] | 895 | ping(lsa);
|
---|
[2725] | 896 | print_stats_and_exit(EXIT_SUCCESS);
|
---|
| 897 | /*return EXIT_SUCCESS;*/
|
---|
[821] | 898 | }
|
---|
[1765] | 899 | #endif /* FEATURE_FANCY_PING */
|
---|
| 900 |
|
---|
| 901 |
|
---|
[2725] | 902 | int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 903 | int ping_main(int argc UNUSED_PARAM, char **argv)
|
---|
| 904 | {
|
---|
| 905 | #if !ENABLE_FEATURE_FANCY_PING
|
---|
| 906 | return common_ping_main(AF_UNSPEC, argv);
|
---|
| 907 | #else
|
---|
| 908 | return common_ping_main(0, argv);
|
---|
| 909 | #endif
|
---|
| 910 | }
|
---|
| 911 |
|
---|
[1765] | 912 | #if ENABLE_PING6
|
---|
[2725] | 913 | int ping6_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 914 | int ping6_main(int argc UNUSED_PARAM, char **argv)
|
---|
[1765] | 915 | {
|
---|
[2725] | 916 | # if !ENABLE_FEATURE_FANCY_PING
|
---|
| 917 | return common_ping_main(AF_INET6, argv);
|
---|
| 918 | # else
|
---|
| 919 | return common_ping_main(OPT_IPV6, argv);
|
---|
| 920 | # endif
|
---|
[1765] | 921 | }
|
---|
| 922 | #endif
|
---|
| 923 |
|
---|
| 924 | /* from ping6.c:
|
---|
| 925 | * Copyright (c) 1989 The Regents of the University of California.
|
---|
| 926 | * All rights reserved.
|
---|
| 927 | *
|
---|
| 928 | * This code is derived from software contributed to Berkeley by
|
---|
| 929 | * Mike Muuss.
|
---|
| 930 | *
|
---|
| 931 | * Redistribution and use in source and binary forms, with or without
|
---|
| 932 | * modification, are permitted provided that the following conditions
|
---|
| 933 | * are met:
|
---|
| 934 | * 1. Redistributions of source code must retain the above copyright
|
---|
| 935 | * notice, this list of conditions and the following disclaimer.
|
---|
| 936 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
| 937 | * notice, this list of conditions and the following disclaimer in the
|
---|
| 938 | * documentation and/or other materials provided with the distribution.
|
---|
| 939 | *
|
---|
| 940 | * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
|
---|
| 941 | * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
|
---|
| 942 | *
|
---|
| 943 | * 4. Neither the name of the University nor the names of its contributors
|
---|
| 944 | * may be used to endorse or promote products derived from this software
|
---|
| 945 | * without specific prior written permission.
|
---|
| 946 | *
|
---|
| 947 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
---|
| 948 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
| 949 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
---|
| 950 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
---|
| 951 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
| 952 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
---|
| 953 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
---|
| 954 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
---|
| 955 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
---|
| 956 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
| 957 | * SUCH DAMAGE.
|
---|
| 958 | */
|
---|