1 | #include <machine/rtems-bsd-user-space.h> |
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2 | |
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3 | #ifdef __rtems__ |
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4 | #include "rtems-bsd-ping6-namespace.h" |
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5 | #endif /* __rtems__ */ |
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6 | |
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7 | /* $KAME: ping6.c,v 1.169 2003/07/25 06:01:47 itojun Exp $ */ |
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8 | |
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9 | /* |
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10 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
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11 | * All rights reserved. |
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12 | * |
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13 | * Redistribution and use in source and binary forms, with or without |
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14 | * modification, are permitted provided that the following conditions |
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15 | * are met: |
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16 | * 1. Redistributions of source code must retain the above copyright |
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17 | * notice, this list of conditions and the following disclaimer. |
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18 | * 2. Redistributions in binary form must reproduce the above copyright |
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19 | * notice, this list of conditions and the following disclaimer in the |
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20 | * documentation and/or other materials provided with the distribution. |
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21 | * 3. Neither the name of the project nor the names of its contributors |
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22 | * may be used to endorse or promote products derived from this software |
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23 | * without specific prior written permission. |
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24 | * |
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25 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
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26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
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29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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35 | * SUCH DAMAGE. |
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36 | */ |
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37 | |
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38 | /* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */ |
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39 | |
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40 | /* |
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41 | * Copyright (c) 1989, 1993 |
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42 | * The Regents of the University of California. All rights reserved. |
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43 | * |
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44 | * This code is derived from software contributed to Berkeley by |
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45 | * Mike Muuss. |
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46 | * |
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47 | * Redistribution and use in source and binary forms, with or without |
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48 | * modification, are permitted provided that the following conditions |
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49 | * are met: |
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50 | * 1. Redistributions of source code must retain the above copyright |
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51 | * notice, this list of conditions and the following disclaimer. |
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52 | * 2. Redistributions in binary form must reproduce the above copyright |
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53 | * notice, this list of conditions and the following disclaimer in the |
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54 | * documentation and/or other materials provided with the distribution. |
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55 | * 3. Neither the name of the University nor the names of its contributors |
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56 | * may be used to endorse or promote products derived from this software |
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57 | * without specific prior written permission. |
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58 | * |
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59 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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60 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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61 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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62 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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63 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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64 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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65 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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66 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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67 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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68 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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69 | * SUCH DAMAGE. |
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70 | */ |
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71 | |
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72 | #ifndef lint |
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73 | static const char copyright[] = |
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74 | "@(#) Copyright (c) 1989, 1993\n\ |
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75 | The Regents of the University of California. All rights reserved.\n"; |
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76 | #endif /* not lint */ |
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77 | |
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78 | #ifndef lint |
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79 | #if 0 |
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80 | static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93"; |
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81 | #endif |
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82 | #endif /* not lint */ |
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83 | |
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84 | #include <sys/cdefs.h> |
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85 | __FBSDID("$FreeBSD$"); |
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86 | |
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87 | /* |
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88 | * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility, |
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89 | * measure round-trip-delays and packet loss across network paths. |
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90 | * |
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91 | * Author - |
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92 | * Mike Muuss |
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93 | * U. S. Army Ballistic Research Laboratory |
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94 | * December, 1983 |
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95 | * |
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96 | * Status - |
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97 | * Public Domain. Distribution Unlimited. |
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98 | * Bugs - |
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99 | * More statistics could always be gathered. |
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100 | * This program has to run SUID to ROOT to access the ICMP socket. |
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101 | */ |
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102 | /* |
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103 | * NOTE: |
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104 | * USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics |
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105 | * as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link* |
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106 | * while IPV6_PKTINFO specifies *interface*. Link is defined as collection of |
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107 | * network attached to 1 or more interfaces) |
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108 | */ |
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109 | |
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110 | #ifdef __rtems__ |
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111 | #define __need_getopt_newlib |
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112 | #include <getopt.h> |
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113 | #include <machine/rtems-bsd-program.h> |
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114 | #include <machine/rtems-bsd-commands.h> |
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115 | #endif /* __rtems__ */ |
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116 | #include <sys/param.h> |
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117 | #include <sys/uio.h> |
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118 | #include <sys/socket.h> |
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119 | #include <sys/time.h> |
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120 | |
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121 | #include <net/if.h> |
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122 | #include <net/route.h> |
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123 | |
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124 | #include <netinet/in.h> |
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125 | #include <netinet/ip6.h> |
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126 | #include <netinet/icmp6.h> |
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127 | #include <arpa/inet.h> |
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128 | #include <arpa/nameser.h> |
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129 | #include <netdb.h> |
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130 | |
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131 | #include <ctype.h> |
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132 | #include <err.h> |
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133 | #include <errno.h> |
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134 | #include <fcntl.h> |
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135 | #include <math.h> |
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136 | #include <signal.h> |
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137 | #include <stdio.h> |
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138 | #include <stdlib.h> |
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139 | #include <string.h> |
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140 | #include <sysexits.h> |
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141 | #include <unistd.h> |
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142 | |
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143 | #ifdef IPSEC |
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144 | #include <netipsec/ah.h> |
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145 | #include <netipsec/ipsec.h> |
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146 | #endif |
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147 | |
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148 | #include <md5.h> |
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149 | #ifdef __rtems__ |
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150 | #include "rtems-bsd-ping6-ping6-data.h" |
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151 | #endif /* __rtems__ */ |
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152 | |
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153 | struct tv32 { |
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154 | u_int32_t tv32_sec; |
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155 | u_int32_t tv32_usec; |
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156 | }; |
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157 | |
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158 | #define MAXPACKETLEN 131072 |
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159 | #define IP6LEN 40 |
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160 | #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */ |
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161 | #define ICMP6ECHOTMLEN sizeof(struct tv32) |
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162 | #define ICMP6_NIQLEN (ICMP6ECHOLEN + 8) |
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163 | # define CONTROLLEN 10240 /* ancillary data buffer size RFC3542 20.1 */ |
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164 | /* FQDN case, 64 bits of nonce + 32 bits ttl */ |
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165 | #define ICMP6_NIRLEN (ICMP6ECHOLEN + 12) |
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166 | #define EXTRA 256 /* for AH and various other headers. weird. */ |
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167 | #define DEFDATALEN ICMP6ECHOTMLEN |
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168 | #define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN |
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169 | #define NROUTES 9 /* number of record route slots */ |
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170 | #define MAXWAIT 10000 /* max ms to wait for response */ |
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171 | #define MAXALARM (60 * 60) /* max seconds for alarm timeout */ |
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172 | |
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173 | #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */ |
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174 | #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */ |
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175 | #define SET(bit) (A(bit) |= B(bit)) |
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176 | #define CLR(bit) (A(bit) &= (~B(bit))) |
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177 | #define TST(bit) (A(bit) & B(bit)) |
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178 | |
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179 | #define F_FLOOD 0x0001 |
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180 | #define F_INTERVAL 0x0002 |
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181 | #define F_PINGFILLED 0x0008 |
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182 | #define F_QUIET 0x0010 |
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183 | #define F_RROUTE 0x0020 |
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184 | #define F_SO_DEBUG 0x0040 |
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185 | #define F_VERBOSE 0x0100 |
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186 | #ifdef IPSEC |
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187 | #ifdef IPSEC_POLICY_IPSEC |
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188 | #define F_POLICY 0x0400 |
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189 | #else |
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190 | #define F_AUTHHDR 0x0200 |
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191 | #define F_ENCRYPT 0x0400 |
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192 | #endif /*IPSEC_POLICY_IPSEC*/ |
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193 | #endif /*IPSEC*/ |
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194 | #define F_NODEADDR 0x0800 |
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195 | #define F_FQDN 0x1000 |
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196 | #define F_INTERFACE 0x2000 |
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197 | #define F_SRCADDR 0x4000 |
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198 | #define F_HOSTNAME 0x10000 |
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199 | #define F_FQDNOLD 0x20000 |
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200 | #define F_NIGROUP 0x40000 |
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201 | #define F_SUPTYPES 0x80000 |
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202 | #define F_NOMINMTU 0x100000 |
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203 | #define F_ONCE 0x200000 |
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204 | #define F_AUDIBLE 0x400000 |
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205 | #define F_MISSED 0x800000 |
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206 | #define F_DONTFRAG 0x1000000 |
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207 | #define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES) |
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208 | #define F_WAITTIME 0x2000000 |
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209 | u_int options; |
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210 | |
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211 | #define IN6LEN sizeof(struct in6_addr) |
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212 | #define SA6LEN sizeof(struct sockaddr_in6) |
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213 | #define DUMMY_PORT 10101 |
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214 | |
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215 | #define SIN6(s) ((struct sockaddr_in6 *)(s)) |
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216 | |
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217 | /* |
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218 | * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum |
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219 | * number of received sequence numbers we can keep track of. Change 128 |
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220 | * to 8192 for complete accuracy... |
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221 | */ |
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222 | #define MAX_DUP_CHK (8 * 8192) |
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223 | static int mx_dup_ck = MAX_DUP_CHK; |
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224 | static char rcvd_tbl[MAX_DUP_CHK / 8]; |
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225 | |
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226 | static struct sockaddr_in6 dst; /* who to ping6 */ |
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227 | static struct sockaddr_in6 src; /* src addr of this packet */ |
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228 | static socklen_t srclen; |
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229 | static size_t datalen = DEFDATALEN; |
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230 | static int s; /* socket file descriptor */ |
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231 | static u_char outpack[MAXPACKETLEN]; |
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232 | static char BSPACE = '\b'; /* characters written for flood */ |
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233 | static char BBELL = '\a'; /* characters written for AUDIBLE */ |
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234 | static char DOT = '.'; |
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235 | static char *hostname; |
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236 | static int ident; /* process id to identify our packets */ |
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237 | static u_int8_t nonce[8]; /* nonce field for node information */ |
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238 | static int hoplimit = -1; /* hoplimit */ |
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239 | static u_char *packet = NULL; |
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240 | |
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241 | /* counters */ |
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242 | static long nmissedmax; /* max value of ntransmitted - nreceived - 1 */ |
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243 | static long npackets; /* max packets to transmit */ |
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244 | static long nreceived; /* # of packets we got back */ |
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245 | static long nrepeats; /* number of duplicates */ |
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246 | static long ntransmitted; /* sequence # for outbound packets = #sent */ |
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247 | static int interval = 1000; /* interval between packets in ms */ |
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248 | static int waittime = MAXWAIT; /* timeout for each packet */ |
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249 | static long nrcvtimeout = 0; /* # of packets we got back after waittime */ |
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250 | |
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251 | /* timing */ |
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252 | static int timing; /* flag to do timing */ |
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253 | static double tmin = 999999999.0; /* minimum round trip time */ |
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254 | static double tmax = 0.0; /* maximum round trip time */ |
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255 | static double tsum = 0.0; /* sum of all times, for doing average */ |
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256 | static double tsumsq = 0.0; /* sum of all times squared, for std. dev. */ |
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257 | |
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258 | /* for node addresses */ |
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259 | static u_short naflags; |
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260 | |
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261 | /* for ancillary data(advanced API) */ |
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262 | static struct msghdr smsghdr; |
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263 | static struct iovec smsgiov; |
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264 | static char *scmsg = 0; |
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265 | |
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266 | static volatile sig_atomic_t seenint; |
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267 | #ifdef SIGINFO |
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268 | static volatile sig_atomic_t seeninfo; |
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269 | #endif |
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270 | |
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271 | #ifndef __rtems__ |
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272 | int main(int, char *[]); |
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273 | #endif /* __rtems__ */ |
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274 | static void fill(char *, char *); |
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275 | static int get_hoplim(struct msghdr *); |
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276 | static int get_pathmtu(struct msghdr *); |
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277 | static struct in6_pktinfo *get_rcvpktinfo(struct msghdr *); |
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278 | static void onsignal(int); |
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279 | static void onint(int); |
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280 | static size_t pingerlen(void); |
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281 | static int pinger(void); |
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282 | static const char *pr_addr(struct sockaddr *, int); |
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283 | static void pr_icmph(struct icmp6_hdr *, u_char *); |
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284 | static void pr_iph(struct ip6_hdr *); |
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285 | static void pr_suptypes(struct icmp6_nodeinfo *, size_t); |
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286 | static void pr_nodeaddr(struct icmp6_nodeinfo *, int); |
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287 | static int myechoreply(const struct icmp6_hdr *); |
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288 | static int mynireply(const struct icmp6_nodeinfo *); |
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289 | static char *dnsdecode(const u_char **, const u_char *, const u_char *, |
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290 | char *, size_t); |
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291 | static void pr_pack(u_char *, int, struct msghdr *); |
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292 | static void pr_exthdrs(struct msghdr *); |
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293 | static void pr_ip6opt(void *, size_t); |
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294 | static void pr_rthdr(void *, size_t); |
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295 | static int pr_bitrange(u_int32_t, int, int); |
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296 | static void pr_retip(struct ip6_hdr *, u_char *); |
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297 | static void summary(void); |
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298 | static void tvsub(struct timeval *, struct timeval *); |
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299 | static int setpolicy(int, char *); |
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300 | static char *nigroup(char *, int); |
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301 | static void usage(void); |
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302 | |
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303 | #ifdef __rtems__ |
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304 | #define USE_RFC2292BIS |
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305 | #endif /* __rtems__ */ |
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306 | #ifdef __rtems__ |
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307 | static int main(int argc, char *argv[]); |
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308 | |
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309 | RTEMS_LINKER_RWSET(bsd_prog_ping6, char); |
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310 | |
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311 | int |
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312 | rtems_bsd_command_ping6(int argc, char *argv[]) |
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313 | { |
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314 | int exit_code; |
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315 | void *data_begin; |
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316 | size_t data_size; |
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317 | |
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318 | data_begin = RTEMS_LINKER_SET_BEGIN(bsd_prog_ping6); |
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319 | data_size = RTEMS_LINKER_SET_SIZE(bsd_prog_ping6); |
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320 | |
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321 | rtems_bsd_program_lock(); |
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322 | exit_code = rtems_bsd_program_call_main_with_data_restore("ping6", |
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323 | main, argc, argv, data_begin, data_size); |
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324 | rtems_bsd_program_unlock(); |
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325 | |
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326 | return exit_code; |
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327 | } |
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328 | #endif /* __rtems__ */ |
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329 | int |
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330 | main(int argc, char *argv[]) |
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331 | { |
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332 | struct timeval last, intvl; |
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333 | struct sockaddr_in6 from, *sin6; |
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334 | struct addrinfo hints, *res; |
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335 | struct sigaction si_sa; |
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336 | int cc, i; |
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337 | int almost_done, ch, hold, packlen, preload, optval, error; |
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338 | int nig_oldmcprefix = -1; |
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339 | u_char *datap; |
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340 | char *e, *target, *ifname = NULL, *gateway = NULL; |
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341 | int ip6optlen = 0; |
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342 | struct cmsghdr *scmsgp = NULL; |
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343 | /* For control (ancillary) data received from recvmsg() */ |
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344 | #ifndef __rtems__ |
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345 | struct cmsghdr cm[CONTROLLEN]; |
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346 | #else /* __rtems__ */ |
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347 | static struct cmsghdr cm[CONTROLLEN]; |
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348 | #endif /* __rtems__ */ |
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349 | #if defined(SO_SNDBUF) && defined(SO_RCVBUF) |
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350 | u_long lsockbufsize; |
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351 | int sockbufsize = 0; |
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352 | #endif |
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353 | int usepktinfo = 0; |
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354 | struct in6_pktinfo *pktinfo = NULL; |
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355 | #ifdef USE_RFC2292BIS |
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356 | struct ip6_rthdr *rthdr = NULL; |
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357 | #endif |
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358 | #ifdef IPSEC_POLICY_IPSEC |
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359 | char *policy_in = NULL; |
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360 | char *policy_out = NULL; |
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361 | #endif |
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362 | double t; |
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363 | u_long alarmtimeout; |
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364 | size_t rthlen; |
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365 | #ifdef IPV6_USE_MIN_MTU |
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366 | int mflag = 0; |
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367 | #endif |
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368 | #ifdef __rtems__ |
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369 | struct getopt_data getopt_data; |
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370 | memset(&getopt_data, 0, sizeof(getopt_data)); |
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371 | #define optind getopt_data.optind |
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372 | #define optarg getopt_data.optarg |
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373 | #define opterr getopt_data.opterr |
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374 | #define optopt getopt_data.optopt |
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375 | #define getopt(argc, argv, opt) getopt_r(argc, argv, "+" opt, &getopt_data) |
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376 | #endif /* __rtems__ */ |
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377 | |
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378 | /* just to be sure */ |
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379 | memset(&smsghdr, 0, sizeof(smsghdr)); |
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380 | memset(&smsgiov, 0, sizeof(smsgiov)); |
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381 | |
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382 | alarmtimeout = preload = 0; |
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383 | datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN]; |
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384 | #ifndef IPSEC |
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385 | #define ADDOPTS |
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386 | #else |
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387 | #ifdef IPSEC_POLICY_IPSEC |
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388 | #define ADDOPTS "P:" |
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389 | #else |
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390 | #define ADDOPTS "AE" |
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391 | #endif /*IPSEC_POLICY_IPSEC*/ |
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392 | #endif |
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393 | while ((ch = getopt(argc, argv, |
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394 | "a:b:c:DdfHg:h:I:i:l:mnNop:qrRS:s:tvwWx:X:" ADDOPTS)) != -1) { |
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395 | #undef ADDOPTS |
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396 | switch (ch) { |
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397 | case 'a': |
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398 | { |
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399 | char *cp; |
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400 | |
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401 | options &= ~F_NOUSERDATA; |
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402 | options |= F_NODEADDR; |
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403 | for (cp = optarg; *cp != '\0'; cp++) { |
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404 | switch (*cp) { |
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405 | case 'a': |
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406 | naflags |= NI_NODEADDR_FLAG_ALL; |
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407 | break; |
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408 | case 'c': |
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409 | case 'C': |
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410 | naflags |= NI_NODEADDR_FLAG_COMPAT; |
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411 | break; |
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412 | case 'l': |
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413 | case 'L': |
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414 | naflags |= NI_NODEADDR_FLAG_LINKLOCAL; |
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415 | break; |
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416 | case 's': |
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417 | case 'S': |
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418 | naflags |= NI_NODEADDR_FLAG_SITELOCAL; |
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419 | break; |
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420 | case 'g': |
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421 | case 'G': |
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422 | naflags |= NI_NODEADDR_FLAG_GLOBAL; |
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423 | break; |
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424 | case 'A': /* experimental. not in the spec */ |
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425 | #ifdef NI_NODEADDR_FLAG_ANYCAST |
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426 | naflags |= NI_NODEADDR_FLAG_ANYCAST; |
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427 | break; |
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428 | #else |
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429 | errx(1, |
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430 | "-a A is not supported on the platform"); |
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431 | /*NOTREACHED*/ |
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432 | #endif |
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433 | default: |
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434 | usage(); |
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435 | /*NOTREACHED*/ |
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436 | } |
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437 | } |
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438 | break; |
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439 | } |
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440 | case 'b': |
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441 | #if defined(SO_SNDBUF) && defined(SO_RCVBUF) |
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442 | errno = 0; |
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443 | e = NULL; |
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444 | lsockbufsize = strtoul(optarg, &e, 10); |
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445 | sockbufsize = (int)lsockbufsize; |
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446 | if (errno || !*optarg || *e || |
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447 | lsockbufsize > INT_MAX) |
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448 | errx(1, "invalid socket buffer size"); |
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449 | #else |
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450 | errx(1, |
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451 | "-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported"); |
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452 | #endif |
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453 | break; |
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454 | case 'c': |
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455 | npackets = strtol(optarg, &e, 10); |
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456 | if (npackets <= 0 || *optarg == '\0' || *e != '\0') |
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457 | errx(1, |
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458 | "illegal number of packets -- %s", optarg); |
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459 | break; |
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460 | case 'D': |
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461 | options |= F_DONTFRAG; |
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462 | break; |
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463 | case 'd': |
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464 | options |= F_SO_DEBUG; |
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465 | break; |
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466 | case 'f': |
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467 | if (getuid()) { |
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468 | errno = EPERM; |
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469 | errx(1, "Must be superuser to flood ping"); |
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470 | } |
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471 | options |= F_FLOOD; |
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472 | setbuf(stdout, (char *)NULL); |
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473 | break; |
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474 | case 'g': |
---|
475 | gateway = optarg; |
---|
476 | break; |
---|
477 | case 'H': |
---|
478 | options |= F_HOSTNAME; |
---|
479 | break; |
---|
480 | case 'h': /* hoplimit */ |
---|
481 | hoplimit = strtol(optarg, &e, 10); |
---|
482 | if (*optarg == '\0' || *e != '\0') |
---|
483 | errx(1, "illegal hoplimit %s", optarg); |
---|
484 | if (255 < hoplimit || hoplimit < -1) |
---|
485 | errx(1, |
---|
486 | "illegal hoplimit -- %s", optarg); |
---|
487 | break; |
---|
488 | case 'I': |
---|
489 | ifname = optarg; |
---|
490 | options |= F_INTERFACE; |
---|
491 | #ifndef USE_SIN6_SCOPE_ID |
---|
492 | usepktinfo++; |
---|
493 | #endif |
---|
494 | break; |
---|
495 | case 'i': /* wait between sending packets */ |
---|
496 | t = strtod(optarg, &e); |
---|
497 | if (*optarg == '\0' || *e != '\0') |
---|
498 | errx(1, "illegal timing interval %s", optarg); |
---|
499 | if (t < 1 && getuid()) { |
---|
500 | errx(1, "%s: only root may use interval < 1s", |
---|
501 | strerror(EPERM)); |
---|
502 | } |
---|
503 | intvl.tv_sec = (long)t; |
---|
504 | intvl.tv_usec = |
---|
505 | (long)((t - intvl.tv_sec) * 1000000); |
---|
506 | if (intvl.tv_sec < 0) |
---|
507 | errx(1, "illegal timing interval %s", optarg); |
---|
508 | /* less than 1/hz does not make sense */ |
---|
509 | if (intvl.tv_sec == 0 && intvl.tv_usec < 1) { |
---|
510 | warnx("too small interval, raised to .000001"); |
---|
511 | intvl.tv_usec = 1; |
---|
512 | } |
---|
513 | options |= F_INTERVAL; |
---|
514 | break; |
---|
515 | case 'l': |
---|
516 | if (getuid()) { |
---|
517 | errno = EPERM; |
---|
518 | errx(1, "Must be superuser to preload"); |
---|
519 | } |
---|
520 | preload = strtol(optarg, &e, 10); |
---|
521 | if (preload < 0 || *optarg == '\0' || *e != '\0') |
---|
522 | errx(1, "illegal preload value -- %s", optarg); |
---|
523 | break; |
---|
524 | case 'm': |
---|
525 | #ifdef IPV6_USE_MIN_MTU |
---|
526 | mflag++; |
---|
527 | break; |
---|
528 | #else |
---|
529 | errx(1, "-%c is not supported on this platform", ch); |
---|
530 | /*NOTREACHED*/ |
---|
531 | #endif |
---|
532 | case 'n': |
---|
533 | options &= ~F_HOSTNAME; |
---|
534 | break; |
---|
535 | case 'N': |
---|
536 | options |= F_NIGROUP; |
---|
537 | nig_oldmcprefix++; |
---|
538 | break; |
---|
539 | case 'o': |
---|
540 | options |= F_ONCE; |
---|
541 | break; |
---|
542 | case 'p': /* fill buffer with user pattern */ |
---|
543 | options |= F_PINGFILLED; |
---|
544 | fill((char *)datap, optarg); |
---|
545 | break; |
---|
546 | case 'q': |
---|
547 | options |= F_QUIET; |
---|
548 | break; |
---|
549 | case 'r': |
---|
550 | options |= F_AUDIBLE; |
---|
551 | break; |
---|
552 | case 'R': |
---|
553 | options |= F_MISSED; |
---|
554 | break; |
---|
555 | case 'S': |
---|
556 | memset(&hints, 0, sizeof(struct addrinfo)); |
---|
557 | hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */ |
---|
558 | hints.ai_family = AF_INET6; |
---|
559 | hints.ai_socktype = SOCK_RAW; |
---|
560 | hints.ai_protocol = IPPROTO_ICMPV6; |
---|
561 | |
---|
562 | error = getaddrinfo(optarg, NULL, &hints, &res); |
---|
563 | if (error) { |
---|
564 | errx(1, "invalid source address: %s", |
---|
565 | gai_strerror(error)); |
---|
566 | } |
---|
567 | /* |
---|
568 | * res->ai_family must be AF_INET6 and res->ai_addrlen |
---|
569 | * must be sizeof(src). |
---|
570 | */ |
---|
571 | memcpy(&src, res->ai_addr, res->ai_addrlen); |
---|
572 | srclen = res->ai_addrlen; |
---|
573 | freeaddrinfo(res); |
---|
574 | options |= F_SRCADDR; |
---|
575 | break; |
---|
576 | case 's': /* size of packet to send */ |
---|
577 | datalen = strtol(optarg, &e, 10); |
---|
578 | if (datalen <= 0 || *optarg == '\0' || *e != '\0') |
---|
579 | errx(1, "illegal datalen value -- %s", optarg); |
---|
580 | if (datalen > MAXDATALEN) { |
---|
581 | errx(1, |
---|
582 | "datalen value too large, maximum is %d", |
---|
583 | MAXDATALEN); |
---|
584 | } |
---|
585 | break; |
---|
586 | case 't': |
---|
587 | options &= ~F_NOUSERDATA; |
---|
588 | options |= F_SUPTYPES; |
---|
589 | break; |
---|
590 | case 'v': |
---|
591 | options |= F_VERBOSE; |
---|
592 | break; |
---|
593 | case 'w': |
---|
594 | options &= ~F_NOUSERDATA; |
---|
595 | options |= F_FQDN; |
---|
596 | break; |
---|
597 | case 'W': |
---|
598 | options &= ~F_NOUSERDATA; |
---|
599 | options |= F_FQDNOLD; |
---|
600 | break; |
---|
601 | case 'x': |
---|
602 | t = strtod(optarg, &e); |
---|
603 | if (*e || e == optarg || t > (double)INT_MAX) |
---|
604 | err(EX_USAGE, "invalid timing interval: `%s'", |
---|
605 | optarg); |
---|
606 | options |= F_WAITTIME; |
---|
607 | waittime = (int)t; |
---|
608 | break; |
---|
609 | case 'X': |
---|
610 | alarmtimeout = strtoul(optarg, &e, 0); |
---|
611 | if ((alarmtimeout < 1) || (alarmtimeout == ULONG_MAX)) |
---|
612 | errx(EX_USAGE, "invalid timeout: `%s'", |
---|
613 | optarg); |
---|
614 | if (alarmtimeout > MAXALARM) |
---|
615 | errx(EX_USAGE, "invalid timeout: `%s' > %d", |
---|
616 | optarg, MAXALARM); |
---|
617 | alarm((int)alarmtimeout); |
---|
618 | break; |
---|
619 | #ifdef IPSEC |
---|
620 | #ifdef IPSEC_POLICY_IPSEC |
---|
621 | case 'P': |
---|
622 | options |= F_POLICY; |
---|
623 | if (!strncmp("in", optarg, 2)) { |
---|
624 | if ((policy_in = strdup(optarg)) == NULL) |
---|
625 | errx(1, "strdup"); |
---|
626 | } else if (!strncmp("out", optarg, 3)) { |
---|
627 | if ((policy_out = strdup(optarg)) == NULL) |
---|
628 | errx(1, "strdup"); |
---|
629 | } else |
---|
630 | errx(1, "invalid security policy"); |
---|
631 | break; |
---|
632 | #else |
---|
633 | case 'A': |
---|
634 | options |= F_AUTHHDR; |
---|
635 | break; |
---|
636 | case 'E': |
---|
637 | options |= F_ENCRYPT; |
---|
638 | break; |
---|
639 | #endif /*IPSEC_POLICY_IPSEC*/ |
---|
640 | #endif /*IPSEC*/ |
---|
641 | default: |
---|
642 | usage(); |
---|
643 | /*NOTREACHED*/ |
---|
644 | } |
---|
645 | } |
---|
646 | |
---|
647 | argc -= optind; |
---|
648 | argv += optind; |
---|
649 | |
---|
650 | if (argc < 1) { |
---|
651 | usage(); |
---|
652 | /*NOTREACHED*/ |
---|
653 | } |
---|
654 | |
---|
655 | if (argc > 1) { |
---|
656 | #ifdef IPV6_RECVRTHDR /* 2292bis */ |
---|
657 | rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0, |
---|
658 | argc - 1)); |
---|
659 | #else /* RFC2292 */ |
---|
660 | rthlen = inet6_rthdr_space(IPV6_RTHDR_TYPE_0, argc - 1); |
---|
661 | #endif |
---|
662 | if (rthlen == 0) { |
---|
663 | errx(1, "too many intermediate hops"); |
---|
664 | /*NOTREACHED*/ |
---|
665 | } |
---|
666 | ip6optlen += rthlen; |
---|
667 | } |
---|
668 | |
---|
669 | if (options & F_NIGROUP) { |
---|
670 | target = nigroup(argv[argc - 1], nig_oldmcprefix); |
---|
671 | if (target == NULL) { |
---|
672 | usage(); |
---|
673 | /*NOTREACHED*/ |
---|
674 | } |
---|
675 | } else |
---|
676 | target = argv[argc - 1]; |
---|
677 | |
---|
678 | /* getaddrinfo */ |
---|
679 | memset(&hints, 0, sizeof(struct addrinfo)); |
---|
680 | hints.ai_flags = AI_CANONNAME; |
---|
681 | hints.ai_family = AF_INET6; |
---|
682 | hints.ai_socktype = SOCK_RAW; |
---|
683 | hints.ai_protocol = IPPROTO_ICMPV6; |
---|
684 | |
---|
685 | error = getaddrinfo(target, NULL, &hints, &res); |
---|
686 | if (error) |
---|
687 | errx(1, "%s", gai_strerror(error)); |
---|
688 | if (res->ai_canonname) |
---|
689 | hostname = strdup(res->ai_canonname); |
---|
690 | else |
---|
691 | hostname = target; |
---|
692 | |
---|
693 | if (!res->ai_addr) |
---|
694 | errx(1, "getaddrinfo failed"); |
---|
695 | |
---|
696 | (void)memcpy(&dst, res->ai_addr, res->ai_addrlen); |
---|
697 | |
---|
698 | if ((s = socket(res->ai_family, res->ai_socktype, |
---|
699 | res->ai_protocol)) < 0) |
---|
700 | err(1, "socket"); |
---|
701 | freeaddrinfo(res); |
---|
702 | |
---|
703 | /* set the source address if specified. */ |
---|
704 | if ((options & F_SRCADDR) != 0) { |
---|
705 | /* properly fill sin6_scope_id */ |
---|
706 | if (IN6_IS_ADDR_LINKLOCAL(&src.sin6_addr) && ( |
---|
707 | IN6_IS_ADDR_LINKLOCAL(&dst.sin6_addr) || |
---|
708 | IN6_IS_ADDR_MC_LINKLOCAL(&dst.sin6_addr) || |
---|
709 | IN6_IS_ADDR_MC_NODELOCAL(&dst.sin6_addr))) { |
---|
710 | if (src.sin6_scope_id == 0) |
---|
711 | src.sin6_scope_id = dst.sin6_scope_id; |
---|
712 | if (dst.sin6_scope_id == 0) |
---|
713 | dst.sin6_scope_id = src.sin6_scope_id; |
---|
714 | } |
---|
715 | if (bind(s, (struct sockaddr *)&src, srclen) != 0) |
---|
716 | err(1, "bind"); |
---|
717 | } |
---|
718 | /* set the gateway (next hop) if specified */ |
---|
719 | if (gateway) { |
---|
720 | memset(&hints, 0, sizeof(hints)); |
---|
721 | hints.ai_family = AF_INET6; |
---|
722 | hints.ai_socktype = SOCK_RAW; |
---|
723 | hints.ai_protocol = IPPROTO_ICMPV6; |
---|
724 | |
---|
725 | error = getaddrinfo(gateway, NULL, &hints, &res); |
---|
726 | if (error) { |
---|
727 | errx(1, "getaddrinfo for the gateway %s: %s", |
---|
728 | gateway, gai_strerror(error)); |
---|
729 | } |
---|
730 | if (res->ai_next && (options & F_VERBOSE)) |
---|
731 | warnx("gateway resolves to multiple addresses"); |
---|
732 | |
---|
733 | if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP, |
---|
734 | res->ai_addr, res->ai_addrlen)) { |
---|
735 | err(1, "setsockopt(IPV6_NEXTHOP)"); |
---|
736 | } |
---|
737 | |
---|
738 | freeaddrinfo(res); |
---|
739 | } |
---|
740 | |
---|
741 | /* |
---|
742 | * let the kerel pass extension headers of incoming packets, |
---|
743 | * for privileged socket options |
---|
744 | */ |
---|
745 | if ((options & F_VERBOSE) != 0) { |
---|
746 | int opton = 1; |
---|
747 | |
---|
748 | #ifdef IPV6_RECVHOPOPTS |
---|
749 | if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton, |
---|
750 | sizeof(opton))) |
---|
751 | err(1, "setsockopt(IPV6_RECVHOPOPTS)"); |
---|
752 | #else /* old adv. API */ |
---|
753 | if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton, |
---|
754 | sizeof(opton))) |
---|
755 | err(1, "setsockopt(IPV6_HOPOPTS)"); |
---|
756 | #endif |
---|
757 | #ifdef IPV6_RECVDSTOPTS |
---|
758 | if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton, |
---|
759 | sizeof(opton))) |
---|
760 | err(1, "setsockopt(IPV6_RECVDSTOPTS)"); |
---|
761 | #else /* old adv. API */ |
---|
762 | if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton, |
---|
763 | sizeof(opton))) |
---|
764 | err(1, "setsockopt(IPV6_DSTOPTS)"); |
---|
765 | #endif |
---|
766 | #ifdef IPV6_RECVRTHDRDSTOPTS |
---|
767 | if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton, |
---|
768 | sizeof(opton))) |
---|
769 | err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)"); |
---|
770 | #endif |
---|
771 | } |
---|
772 | |
---|
773 | /* revoke root privilege */ |
---|
774 | if (seteuid(getuid()) != 0) |
---|
775 | err(1, "seteuid() failed"); |
---|
776 | if (setuid(getuid()) != 0) |
---|
777 | err(1, "setuid() failed"); |
---|
778 | |
---|
779 | if ((options & F_FLOOD) && (options & F_INTERVAL)) |
---|
780 | errx(1, "-f and -i incompatible options"); |
---|
781 | |
---|
782 | if ((options & F_NOUSERDATA) == 0) { |
---|
783 | if (datalen >= sizeof(struct tv32)) { |
---|
784 | /* we can time transfer */ |
---|
785 | timing = 1; |
---|
786 | } else |
---|
787 | timing = 0; |
---|
788 | /* in F_VERBOSE case, we may get non-echoreply packets*/ |
---|
789 | if (options & F_VERBOSE) |
---|
790 | packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA; |
---|
791 | else |
---|
792 | packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA; |
---|
793 | } else { |
---|
794 | /* suppress timing for node information query */ |
---|
795 | timing = 0; |
---|
796 | datalen = 2048; |
---|
797 | packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA; |
---|
798 | } |
---|
799 | |
---|
800 | if (!(packet = (u_char *)malloc((u_int)packlen))) |
---|
801 | err(1, "Unable to allocate packet"); |
---|
802 | if (!(options & F_PINGFILLED)) |
---|
803 | for (i = ICMP6ECHOLEN; i < packlen; ++i) |
---|
804 | *datap++ = i; |
---|
805 | |
---|
806 | ident = getpid() & 0xFFFF; |
---|
807 | arc4random_buf(nonce, sizeof(nonce)); |
---|
808 | optval = 1; |
---|
809 | if (options & F_DONTFRAG) |
---|
810 | if (setsockopt(s, IPPROTO_IPV6, IPV6_DONTFRAG, |
---|
811 | &optval, sizeof(optval)) == -1) |
---|
812 | err(1, "IPV6_DONTFRAG"); |
---|
813 | hold = 1; |
---|
814 | |
---|
815 | if (options & F_SO_DEBUG) |
---|
816 | (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold, |
---|
817 | sizeof(hold)); |
---|
818 | optval = IPV6_DEFHLIM; |
---|
819 | if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr)) |
---|
820 | if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, |
---|
821 | &optval, sizeof(optval)) == -1) |
---|
822 | err(1, "IPV6_MULTICAST_HOPS"); |
---|
823 | #ifdef IPV6_USE_MIN_MTU |
---|
824 | if (mflag != 1) { |
---|
825 | optval = mflag > 1 ? 0 : 1; |
---|
826 | |
---|
827 | if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU, |
---|
828 | &optval, sizeof(optval)) == -1) |
---|
829 | err(1, "setsockopt(IPV6_USE_MIN_MTU)"); |
---|
830 | } |
---|
831 | #ifdef IPV6_RECVPATHMTU |
---|
832 | else { |
---|
833 | optval = 1; |
---|
834 | if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU, |
---|
835 | &optval, sizeof(optval)) == -1) |
---|
836 | err(1, "setsockopt(IPV6_RECVPATHMTU)"); |
---|
837 | } |
---|
838 | #endif /* IPV6_RECVPATHMTU */ |
---|
839 | #endif /* IPV6_USE_MIN_MTU */ |
---|
840 | |
---|
841 | #ifdef IPSEC |
---|
842 | #ifdef IPSEC_POLICY_IPSEC |
---|
843 | if (options & F_POLICY) { |
---|
844 | if (setpolicy(s, policy_in) < 0) |
---|
845 | errx(1, "%s", ipsec_strerror()); |
---|
846 | if (setpolicy(s, policy_out) < 0) |
---|
847 | errx(1, "%s", ipsec_strerror()); |
---|
848 | } |
---|
849 | #else |
---|
850 | if (options & F_AUTHHDR) { |
---|
851 | optval = IPSEC_LEVEL_REQUIRE; |
---|
852 | #ifdef IPV6_AUTH_TRANS_LEVEL |
---|
853 | if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL, |
---|
854 | &optval, sizeof(optval)) == -1) |
---|
855 | err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)"); |
---|
856 | #else /* old def */ |
---|
857 | if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL, |
---|
858 | &optval, sizeof(optval)) == -1) |
---|
859 | err(1, "setsockopt(IPV6_AUTH_LEVEL)"); |
---|
860 | #endif |
---|
861 | } |
---|
862 | if (options & F_ENCRYPT) { |
---|
863 | optval = IPSEC_LEVEL_REQUIRE; |
---|
864 | if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL, |
---|
865 | &optval, sizeof(optval)) == -1) |
---|
866 | err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)"); |
---|
867 | } |
---|
868 | #endif /*IPSEC_POLICY_IPSEC*/ |
---|
869 | #endif |
---|
870 | |
---|
871 | #ifdef ICMP6_FILTER |
---|
872 | { |
---|
873 | struct icmp6_filter filt; |
---|
874 | if (!(options & F_VERBOSE)) { |
---|
875 | ICMP6_FILTER_SETBLOCKALL(&filt); |
---|
876 | if ((options & F_FQDN) || (options & F_FQDNOLD) || |
---|
877 | (options & F_NODEADDR) || (options & F_SUPTYPES)) |
---|
878 | ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt); |
---|
879 | else |
---|
880 | ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt); |
---|
881 | } else { |
---|
882 | ICMP6_FILTER_SETPASSALL(&filt); |
---|
883 | } |
---|
884 | if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt, |
---|
885 | sizeof(filt)) < 0) |
---|
886 | err(1, "setsockopt(ICMP6_FILTER)"); |
---|
887 | } |
---|
888 | #endif /*ICMP6_FILTER*/ |
---|
889 | |
---|
890 | /* let the kerel pass extension headers of incoming packets */ |
---|
891 | if ((options & F_VERBOSE) != 0) { |
---|
892 | int opton = 1; |
---|
893 | |
---|
894 | #ifdef IPV6_RECVRTHDR |
---|
895 | if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton, |
---|
896 | sizeof(opton))) |
---|
897 | err(1, "setsockopt(IPV6_RECVRTHDR)"); |
---|
898 | #else /* old adv. API */ |
---|
899 | if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton, |
---|
900 | sizeof(opton))) |
---|
901 | err(1, "setsockopt(IPV6_RTHDR)"); |
---|
902 | #endif |
---|
903 | } |
---|
904 | |
---|
905 | /* |
---|
906 | optval = 1; |
---|
907 | if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr)) |
---|
908 | if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, |
---|
909 | &optval, sizeof(optval)) == -1) |
---|
910 | err(1, "IPV6_MULTICAST_LOOP"); |
---|
911 | */ |
---|
912 | |
---|
913 | /* Specify the outgoing interface and/or the source address */ |
---|
914 | if (usepktinfo) |
---|
915 | ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo)); |
---|
916 | |
---|
917 | if (hoplimit != -1) |
---|
918 | ip6optlen += CMSG_SPACE(sizeof(int)); |
---|
919 | |
---|
920 | /* set IP6 packet options */ |
---|
921 | if (ip6optlen) { |
---|
922 | if ((scmsg = (char *)malloc(ip6optlen)) == NULL) |
---|
923 | errx(1, "can't allocate enough memory"); |
---|
924 | smsghdr.msg_control = (caddr_t)scmsg; |
---|
925 | smsghdr.msg_controllen = ip6optlen; |
---|
926 | scmsgp = (struct cmsghdr *)scmsg; |
---|
927 | } |
---|
928 | if (usepktinfo) { |
---|
929 | pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp)); |
---|
930 | memset(pktinfo, 0, sizeof(*pktinfo)); |
---|
931 | scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); |
---|
932 | scmsgp->cmsg_level = IPPROTO_IPV6; |
---|
933 | scmsgp->cmsg_type = IPV6_PKTINFO; |
---|
934 | scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); |
---|
935 | } |
---|
936 | |
---|
937 | /* set the outgoing interface */ |
---|
938 | if (ifname) { |
---|
939 | #ifndef USE_SIN6_SCOPE_ID |
---|
940 | /* pktinfo must have already been allocated */ |
---|
941 | if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0) |
---|
942 | errx(1, "%s: invalid interface name", ifname); |
---|
943 | #else |
---|
944 | if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0) |
---|
945 | errx(1, "%s: invalid interface name", ifname); |
---|
946 | #endif |
---|
947 | } |
---|
948 | if (hoplimit != -1) { |
---|
949 | scmsgp->cmsg_len = CMSG_LEN(sizeof(int)); |
---|
950 | scmsgp->cmsg_level = IPPROTO_IPV6; |
---|
951 | scmsgp->cmsg_type = IPV6_HOPLIMIT; |
---|
952 | *(int *)(CMSG_DATA(scmsgp)) = hoplimit; |
---|
953 | |
---|
954 | scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); |
---|
955 | } |
---|
956 | |
---|
957 | if (argc > 1) { /* some intermediate addrs are specified */ |
---|
958 | int hops; |
---|
959 | #ifdef USE_RFC2292BIS |
---|
960 | int rthdrlen; |
---|
961 | #endif |
---|
962 | |
---|
963 | #ifdef USE_RFC2292BIS |
---|
964 | rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1); |
---|
965 | scmsgp->cmsg_len = CMSG_LEN(rthdrlen); |
---|
966 | scmsgp->cmsg_level = IPPROTO_IPV6; |
---|
967 | scmsgp->cmsg_type = IPV6_RTHDR; |
---|
968 | rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp); |
---|
969 | rthdr = inet6_rth_init((void *)rthdr, rthdrlen, |
---|
970 | IPV6_RTHDR_TYPE_0, argc - 1); |
---|
971 | if (rthdr == NULL) |
---|
972 | errx(1, "can't initialize rthdr"); |
---|
973 | #else /* old advanced API */ |
---|
974 | if ((scmsgp = (struct cmsghdr *)inet6_rthdr_init(scmsgp, |
---|
975 | IPV6_RTHDR_TYPE_0)) == NULL) |
---|
976 | errx(1, "can't initialize rthdr"); |
---|
977 | #endif /* USE_RFC2292BIS */ |
---|
978 | |
---|
979 | for (hops = 0; hops < argc - 1; hops++) { |
---|
980 | memset(&hints, 0, sizeof(hints)); |
---|
981 | hints.ai_family = AF_INET6; |
---|
982 | |
---|
983 | if ((error = getaddrinfo(argv[hops], NULL, &hints, |
---|
984 | &res))) |
---|
985 | errx(1, "%s", gai_strerror(error)); |
---|
986 | if (res->ai_addr->sa_family != AF_INET6) |
---|
987 | errx(1, |
---|
988 | "bad addr family of an intermediate addr"); |
---|
989 | sin6 = (struct sockaddr_in6 *)(void *)res->ai_addr; |
---|
990 | #ifdef USE_RFC2292BIS |
---|
991 | if (inet6_rth_add(rthdr, &sin6->sin6_addr)) |
---|
992 | errx(1, "can't add an intermediate node"); |
---|
993 | #else /* old advanced API */ |
---|
994 | if (inet6_rthdr_add(scmsg, &sin6->sin6_addr, |
---|
995 | IPV6_RTHDR_LOOSE)) |
---|
996 | errx(1, "can't add an intermediate node"); |
---|
997 | #endif /* USE_RFC2292BIS */ |
---|
998 | freeaddrinfo(res); |
---|
999 | } |
---|
1000 | |
---|
1001 | #ifndef USE_RFC2292BIS |
---|
1002 | if (inet6_rthdr_lasthop(scmsgp, IPV6_RTHDR_LOOSE)) |
---|
1003 | errx(1, "can't set the last flag"); |
---|
1004 | #endif |
---|
1005 | |
---|
1006 | scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp); |
---|
1007 | } |
---|
1008 | |
---|
1009 | if (!(options & F_SRCADDR)) { |
---|
1010 | /* |
---|
1011 | * get the source address. XXX since we revoked the root |
---|
1012 | * privilege, we cannot use a raw socket for this. |
---|
1013 | */ |
---|
1014 | int dummy; |
---|
1015 | socklen_t len = sizeof(src); |
---|
1016 | |
---|
1017 | if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) |
---|
1018 | err(1, "UDP socket"); |
---|
1019 | |
---|
1020 | src.sin6_family = AF_INET6; |
---|
1021 | src.sin6_addr = dst.sin6_addr; |
---|
1022 | src.sin6_port = ntohs(DUMMY_PORT); |
---|
1023 | src.sin6_scope_id = dst.sin6_scope_id; |
---|
1024 | |
---|
1025 | #ifdef USE_RFC2292BIS |
---|
1026 | if (pktinfo && |
---|
1027 | setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO, |
---|
1028 | (void *)pktinfo, sizeof(*pktinfo))) |
---|
1029 | err(1, "UDP setsockopt(IPV6_PKTINFO)"); |
---|
1030 | |
---|
1031 | if (hoplimit != -1 && |
---|
1032 | setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS, |
---|
1033 | (void *)&hoplimit, sizeof(hoplimit))) |
---|
1034 | err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)"); |
---|
1035 | |
---|
1036 | if (hoplimit != -1 && |
---|
1037 | setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, |
---|
1038 | (void *)&hoplimit, sizeof(hoplimit))) |
---|
1039 | err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)"); |
---|
1040 | |
---|
1041 | if (rthdr && |
---|
1042 | setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR, |
---|
1043 | (void *)rthdr, (rthdr->ip6r_len + 1) << 3)) |
---|
1044 | err(1, "UDP setsockopt(IPV6_RTHDR)"); |
---|
1045 | #else /* old advanced API */ |
---|
1046 | if (smsghdr.msg_control && |
---|
1047 | setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTOPTIONS, |
---|
1048 | (void *)smsghdr.msg_control, smsghdr.msg_controllen)) |
---|
1049 | err(1, "UDP setsockopt(IPV6_PKTOPTIONS)"); |
---|
1050 | #endif |
---|
1051 | |
---|
1052 | if (connect(dummy, (struct sockaddr *)&src, len) < 0) |
---|
1053 | err(1, "UDP connect"); |
---|
1054 | |
---|
1055 | if (getsockname(dummy, (struct sockaddr *)&src, &len) < 0) |
---|
1056 | err(1, "getsockname"); |
---|
1057 | |
---|
1058 | close(dummy); |
---|
1059 | } |
---|
1060 | |
---|
1061 | #if defined(SO_SNDBUF) && defined(SO_RCVBUF) |
---|
1062 | if (sockbufsize) { |
---|
1063 | if (datalen > (size_t)sockbufsize) |
---|
1064 | warnx("you need -b to increase socket buffer size"); |
---|
1065 | if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sockbufsize, |
---|
1066 | sizeof(sockbufsize)) < 0) |
---|
1067 | err(1, "setsockopt(SO_SNDBUF)"); |
---|
1068 | if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &sockbufsize, |
---|
1069 | sizeof(sockbufsize)) < 0) |
---|
1070 | err(1, "setsockopt(SO_RCVBUF)"); |
---|
1071 | } |
---|
1072 | else { |
---|
1073 | if (datalen > 8 * 1024) /*XXX*/ |
---|
1074 | warnx("you need -b to increase socket buffer size"); |
---|
1075 | /* |
---|
1076 | * When pinging the broadcast address, you can get a lot of |
---|
1077 | * answers. Doing something so evil is useful if you are trying |
---|
1078 | * to stress the ethernet, or just want to fill the arp cache |
---|
1079 | * to get some stuff for /etc/ethers. |
---|
1080 | */ |
---|
1081 | hold = 48 * 1024; |
---|
1082 | setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold, |
---|
1083 | sizeof(hold)); |
---|
1084 | } |
---|
1085 | #endif |
---|
1086 | |
---|
1087 | optval = 1; |
---|
1088 | #ifndef USE_SIN6_SCOPE_ID |
---|
1089 | #ifdef IPV6_RECVPKTINFO |
---|
1090 | if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval, |
---|
1091 | sizeof(optval)) < 0) |
---|
1092 | warn("setsockopt(IPV6_RECVPKTINFO)"); /* XXX err? */ |
---|
1093 | #else /* old adv. API */ |
---|
1094 | if (setsockopt(s, IPPROTO_IPV6, IPV6_PKTINFO, &optval, |
---|
1095 | sizeof(optval)) < 0) |
---|
1096 | warn("setsockopt(IPV6_PKTINFO)"); /* XXX err? */ |
---|
1097 | #endif |
---|
1098 | #endif /* USE_SIN6_SCOPE_ID */ |
---|
1099 | #ifdef IPV6_RECVHOPLIMIT |
---|
1100 | if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &optval, |
---|
1101 | sizeof(optval)) < 0) |
---|
1102 | warn("setsockopt(IPV6_RECVHOPLIMIT)"); /* XXX err? */ |
---|
1103 | #else /* old adv. API */ |
---|
1104 | if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPLIMIT, &optval, |
---|
1105 | sizeof(optval)) < 0) |
---|
1106 | warn("setsockopt(IPV6_HOPLIMIT)"); /* XXX err? */ |
---|
1107 | #endif |
---|
1108 | |
---|
1109 | printf("PING6(%lu=40+8+%lu bytes) ", (unsigned long)(40 + pingerlen()), |
---|
1110 | (unsigned long)(pingerlen() - 8)); |
---|
1111 | printf("%s --> ", pr_addr((struct sockaddr *)&src, sizeof(src))); |
---|
1112 | printf("%s\n", pr_addr((struct sockaddr *)&dst, sizeof(dst))); |
---|
1113 | |
---|
1114 | if (preload == 0) |
---|
1115 | pinger(); |
---|
1116 | else { |
---|
1117 | if (npackets != 0 && preload > npackets) |
---|
1118 | preload = npackets; |
---|
1119 | while (preload--) |
---|
1120 | pinger(); |
---|
1121 | } |
---|
1122 | gettimeofday(&last, NULL); |
---|
1123 | |
---|
1124 | sigemptyset(&si_sa.sa_mask); |
---|
1125 | si_sa.sa_flags = 0; |
---|
1126 | si_sa.sa_handler = onsignal; |
---|
1127 | if (sigaction(SIGINT, &si_sa, 0) == -1) |
---|
1128 | err(EX_OSERR, "sigaction SIGINT"); |
---|
1129 | seenint = 0; |
---|
1130 | #ifdef SIGINFO |
---|
1131 | if (sigaction(SIGINFO, &si_sa, 0) == -1) |
---|
1132 | err(EX_OSERR, "sigaction SIGINFO"); |
---|
1133 | seeninfo = 0; |
---|
1134 | #endif |
---|
1135 | if (alarmtimeout > 0) { |
---|
1136 | if (sigaction(SIGALRM, &si_sa, 0) == -1) |
---|
1137 | err(EX_OSERR, "sigaction SIGALRM"); |
---|
1138 | } |
---|
1139 | if (options & F_FLOOD) { |
---|
1140 | intvl.tv_sec = 0; |
---|
1141 | intvl.tv_usec = 10000; |
---|
1142 | } else if ((options & F_INTERVAL) == 0) { |
---|
1143 | intvl.tv_sec = interval / 1000; |
---|
1144 | intvl.tv_usec = interval % 1000 * 1000; |
---|
1145 | } |
---|
1146 | |
---|
1147 | almost_done = 0; |
---|
1148 | while (seenint == 0) { |
---|
1149 | struct timeval now, timeout; |
---|
1150 | struct msghdr m; |
---|
1151 | struct iovec iov[2]; |
---|
1152 | fd_set rfds; |
---|
1153 | int n; |
---|
1154 | |
---|
1155 | /* signal handling */ |
---|
1156 | if (seenint) |
---|
1157 | onint(SIGINT); |
---|
1158 | #ifdef SIGINFO |
---|
1159 | if (seeninfo) { |
---|
1160 | summary(); |
---|
1161 | seeninfo = 0; |
---|
1162 | continue; |
---|
1163 | } |
---|
1164 | #endif |
---|
1165 | FD_ZERO(&rfds); |
---|
1166 | FD_SET(s, &rfds); |
---|
1167 | gettimeofday(&now, NULL); |
---|
1168 | timeout.tv_sec = last.tv_sec + intvl.tv_sec - now.tv_sec; |
---|
1169 | timeout.tv_usec = last.tv_usec + intvl.tv_usec - now.tv_usec; |
---|
1170 | while (timeout.tv_usec < 0) { |
---|
1171 | timeout.tv_usec += 1000000; |
---|
1172 | timeout.tv_sec--; |
---|
1173 | } |
---|
1174 | while (timeout.tv_usec > 1000000) { |
---|
1175 | timeout.tv_usec -= 1000000; |
---|
1176 | timeout.tv_sec++; |
---|
1177 | } |
---|
1178 | if (timeout.tv_sec < 0) |
---|
1179 | timeout.tv_sec = timeout.tv_usec = 0; |
---|
1180 | |
---|
1181 | n = select(s + 1, &rfds, NULL, NULL, &timeout); |
---|
1182 | if (n < 0) |
---|
1183 | continue; /* EINTR */ |
---|
1184 | if (n == 1) { |
---|
1185 | m.msg_name = (caddr_t)&from; |
---|
1186 | m.msg_namelen = sizeof(from); |
---|
1187 | memset(&iov, 0, sizeof(iov)); |
---|
1188 | iov[0].iov_base = (caddr_t)packet; |
---|
1189 | iov[0].iov_len = packlen; |
---|
1190 | m.msg_iov = iov; |
---|
1191 | m.msg_iovlen = 1; |
---|
1192 | memset(cm, 0, CONTROLLEN); |
---|
1193 | m.msg_control = (void *)cm; |
---|
1194 | m.msg_controllen = CONTROLLEN; |
---|
1195 | |
---|
1196 | cc = recvmsg(s, &m, 0); |
---|
1197 | if (cc < 0) { |
---|
1198 | if (errno != EINTR) { |
---|
1199 | warn("recvmsg"); |
---|
1200 | sleep(1); |
---|
1201 | } |
---|
1202 | continue; |
---|
1203 | } else if (cc == 0) { |
---|
1204 | int mtu; |
---|
1205 | |
---|
1206 | /* |
---|
1207 | * receive control messages only. Process the |
---|
1208 | * exceptions (currently the only possibility is |
---|
1209 | * a path MTU notification.) |
---|
1210 | */ |
---|
1211 | if ((mtu = get_pathmtu(&m)) > 0) { |
---|
1212 | if ((options & F_VERBOSE) != 0) { |
---|
1213 | printf("new path MTU (%d) is " |
---|
1214 | "notified\n", mtu); |
---|
1215 | } |
---|
1216 | } |
---|
1217 | continue; |
---|
1218 | } else { |
---|
1219 | /* |
---|
1220 | * an ICMPv6 message (probably an echoreply) |
---|
1221 | * arrived. |
---|
1222 | */ |
---|
1223 | pr_pack(packet, cc, &m); |
---|
1224 | } |
---|
1225 | if (((options & F_ONCE) != 0 && nreceived > 0) || |
---|
1226 | (npackets > 0 && nreceived >= npackets)) |
---|
1227 | break; |
---|
1228 | } |
---|
1229 | if (n == 0 || (options & F_FLOOD)) { |
---|
1230 | if (npackets == 0 || ntransmitted < npackets) |
---|
1231 | pinger(); |
---|
1232 | else { |
---|
1233 | if (almost_done) |
---|
1234 | break; |
---|
1235 | almost_done = 1; |
---|
1236 | /* |
---|
1237 | * If we're not transmitting any more packets, |
---|
1238 | * change the timer to wait two round-trip times |
---|
1239 | * if we've received any packets or (waittime) |
---|
1240 | * milliseconds if we haven't. |
---|
1241 | */ |
---|
1242 | intvl.tv_usec = 0; |
---|
1243 | if (nreceived) { |
---|
1244 | intvl.tv_sec = 2 * tmax / 1000; |
---|
1245 | if (intvl.tv_sec == 0) |
---|
1246 | intvl.tv_sec = 1; |
---|
1247 | } else { |
---|
1248 | intvl.tv_sec = waittime / 1000; |
---|
1249 | intvl.tv_usec = waittime % 1000 * 1000; |
---|
1250 | } |
---|
1251 | } |
---|
1252 | gettimeofday(&last, NULL); |
---|
1253 | if (ntransmitted - nreceived - 1 > nmissedmax) { |
---|
1254 | nmissedmax = ntransmitted - nreceived - 1; |
---|
1255 | if (options & F_MISSED) |
---|
1256 | (void)write(STDOUT_FILENO, &BBELL, 1); |
---|
1257 | } |
---|
1258 | } |
---|
1259 | } |
---|
1260 | sigemptyset(&si_sa.sa_mask); |
---|
1261 | si_sa.sa_flags = 0; |
---|
1262 | si_sa.sa_handler = SIG_IGN; |
---|
1263 | sigaction(SIGINT, &si_sa, 0); |
---|
1264 | sigaction(SIGALRM, &si_sa, 0); |
---|
1265 | summary(); |
---|
1266 | |
---|
1267 | if(packet != NULL) |
---|
1268 | free(packet); |
---|
1269 | |
---|
1270 | exit(nreceived == 0 ? 2 : 0); |
---|
1271 | } |
---|
1272 | |
---|
1273 | static void |
---|
1274 | onsignal(int sig) |
---|
1275 | { |
---|
1276 | |
---|
1277 | switch (sig) { |
---|
1278 | case SIGINT: |
---|
1279 | case SIGALRM: |
---|
1280 | seenint++; |
---|
1281 | break; |
---|
1282 | #ifdef SIGINFO |
---|
1283 | case SIGINFO: |
---|
1284 | seeninfo++; |
---|
1285 | break; |
---|
1286 | #endif |
---|
1287 | } |
---|
1288 | } |
---|
1289 | |
---|
1290 | /* |
---|
1291 | * pinger -- |
---|
1292 | * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet |
---|
1293 | * will be added on by the kernel. The ID field is our UNIX process ID, |
---|
1294 | * and the sequence number is an ascending integer. The first 8 bytes |
---|
1295 | * of the data portion are used to hold a UNIX "timeval" struct in VAX |
---|
1296 | * byte-order, to compute the round-trip time. |
---|
1297 | */ |
---|
1298 | static size_t |
---|
1299 | pingerlen(void) |
---|
1300 | { |
---|
1301 | size_t l; |
---|
1302 | |
---|
1303 | if (options & F_FQDN) |
---|
1304 | l = ICMP6_NIQLEN + sizeof(dst.sin6_addr); |
---|
1305 | else if (options & F_FQDNOLD) |
---|
1306 | l = ICMP6_NIQLEN; |
---|
1307 | else if (options & F_NODEADDR) |
---|
1308 | l = ICMP6_NIQLEN + sizeof(dst.sin6_addr); |
---|
1309 | else if (options & F_SUPTYPES) |
---|
1310 | l = ICMP6_NIQLEN; |
---|
1311 | else |
---|
1312 | l = ICMP6ECHOLEN + datalen; |
---|
1313 | |
---|
1314 | return l; |
---|
1315 | } |
---|
1316 | |
---|
1317 | static int |
---|
1318 | pinger(void) |
---|
1319 | { |
---|
1320 | struct icmp6_hdr *icp; |
---|
1321 | struct iovec iov[2]; |
---|
1322 | int i, cc; |
---|
1323 | struct icmp6_nodeinfo *nip; |
---|
1324 | int seq; |
---|
1325 | |
---|
1326 | if (npackets && ntransmitted >= npackets) |
---|
1327 | return(-1); /* no more transmission */ |
---|
1328 | |
---|
1329 | icp = (struct icmp6_hdr *)outpack; |
---|
1330 | nip = (struct icmp6_nodeinfo *)outpack; |
---|
1331 | memset(icp, 0, sizeof(*icp)); |
---|
1332 | icp->icmp6_cksum = 0; |
---|
1333 | seq = ntransmitted++; |
---|
1334 | CLR(seq % mx_dup_ck); |
---|
1335 | |
---|
1336 | if (options & F_FQDN) { |
---|
1337 | icp->icmp6_type = ICMP6_NI_QUERY; |
---|
1338 | icp->icmp6_code = ICMP6_NI_SUBJ_IPV6; |
---|
1339 | nip->ni_qtype = htons(NI_QTYPE_FQDN); |
---|
1340 | nip->ni_flags = htons(0); |
---|
1341 | |
---|
1342 | memcpy(nip->icmp6_ni_nonce, nonce, |
---|
1343 | sizeof(nip->icmp6_ni_nonce)); |
---|
1344 | *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); |
---|
1345 | |
---|
1346 | memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr, |
---|
1347 | sizeof(dst.sin6_addr)); |
---|
1348 | cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr); |
---|
1349 | datalen = 0; |
---|
1350 | } else if (options & F_FQDNOLD) { |
---|
1351 | /* packet format in 03 draft - no Subject data on queries */ |
---|
1352 | icp->icmp6_type = ICMP6_NI_QUERY; |
---|
1353 | icp->icmp6_code = 0; /* code field is always 0 */ |
---|
1354 | nip->ni_qtype = htons(NI_QTYPE_FQDN); |
---|
1355 | nip->ni_flags = htons(0); |
---|
1356 | |
---|
1357 | memcpy(nip->icmp6_ni_nonce, nonce, |
---|
1358 | sizeof(nip->icmp6_ni_nonce)); |
---|
1359 | *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); |
---|
1360 | |
---|
1361 | cc = ICMP6_NIQLEN; |
---|
1362 | datalen = 0; |
---|
1363 | } else if (options & F_NODEADDR) { |
---|
1364 | icp->icmp6_type = ICMP6_NI_QUERY; |
---|
1365 | icp->icmp6_code = ICMP6_NI_SUBJ_IPV6; |
---|
1366 | nip->ni_qtype = htons(NI_QTYPE_NODEADDR); |
---|
1367 | nip->ni_flags = naflags; |
---|
1368 | |
---|
1369 | memcpy(nip->icmp6_ni_nonce, nonce, |
---|
1370 | sizeof(nip->icmp6_ni_nonce)); |
---|
1371 | *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); |
---|
1372 | |
---|
1373 | memcpy(&outpack[ICMP6_NIQLEN], &dst.sin6_addr, |
---|
1374 | sizeof(dst.sin6_addr)); |
---|
1375 | cc = ICMP6_NIQLEN + sizeof(dst.sin6_addr); |
---|
1376 | datalen = 0; |
---|
1377 | } else if (options & F_SUPTYPES) { |
---|
1378 | icp->icmp6_type = ICMP6_NI_QUERY; |
---|
1379 | icp->icmp6_code = ICMP6_NI_SUBJ_FQDN; /*empty*/ |
---|
1380 | nip->ni_qtype = htons(NI_QTYPE_SUPTYPES); |
---|
1381 | /* we support compressed bitmap */ |
---|
1382 | nip->ni_flags = NI_SUPTYPE_FLAG_COMPRESS; |
---|
1383 | |
---|
1384 | memcpy(nip->icmp6_ni_nonce, nonce, |
---|
1385 | sizeof(nip->icmp6_ni_nonce)); |
---|
1386 | *(u_int16_t *)nip->icmp6_ni_nonce = ntohs(seq); |
---|
1387 | cc = ICMP6_NIQLEN; |
---|
1388 | datalen = 0; |
---|
1389 | } else { |
---|
1390 | icp->icmp6_type = ICMP6_ECHO_REQUEST; |
---|
1391 | icp->icmp6_code = 0; |
---|
1392 | icp->icmp6_id = htons(ident); |
---|
1393 | icp->icmp6_seq = ntohs(seq); |
---|
1394 | if (timing) { |
---|
1395 | struct timeval tv; |
---|
1396 | struct tv32 *tv32; |
---|
1397 | (void)gettimeofday(&tv, NULL); |
---|
1398 | tv32 = (struct tv32 *)&outpack[ICMP6ECHOLEN]; |
---|
1399 | tv32->tv32_sec = htonl(tv.tv_sec); |
---|
1400 | tv32->tv32_usec = htonl(tv.tv_usec); |
---|
1401 | } |
---|
1402 | cc = ICMP6ECHOLEN + datalen; |
---|
1403 | } |
---|
1404 | |
---|
1405 | #ifdef DIAGNOSTIC |
---|
1406 | if (pingerlen() != cc) |
---|
1407 | errx(1, "internal error; length mismatch"); |
---|
1408 | #endif |
---|
1409 | |
---|
1410 | smsghdr.msg_name = (caddr_t)&dst; |
---|
1411 | smsghdr.msg_namelen = sizeof(dst); |
---|
1412 | memset(&iov, 0, sizeof(iov)); |
---|
1413 | iov[0].iov_base = (caddr_t)outpack; |
---|
1414 | iov[0].iov_len = cc; |
---|
1415 | smsghdr.msg_iov = iov; |
---|
1416 | smsghdr.msg_iovlen = 1; |
---|
1417 | |
---|
1418 | i = sendmsg(s, &smsghdr, 0); |
---|
1419 | |
---|
1420 | if (i < 0 || i != cc) { |
---|
1421 | if (i < 0) |
---|
1422 | warn("sendmsg"); |
---|
1423 | (void)printf("ping6: wrote %s %d chars, ret=%d\n", |
---|
1424 | hostname, cc, i); |
---|
1425 | } |
---|
1426 | if (!(options & F_QUIET) && options & F_FLOOD) |
---|
1427 | (void)write(STDOUT_FILENO, &DOT, 1); |
---|
1428 | |
---|
1429 | return(0); |
---|
1430 | } |
---|
1431 | |
---|
1432 | static int |
---|
1433 | myechoreply(const struct icmp6_hdr *icp) |
---|
1434 | { |
---|
1435 | if (ntohs(icp->icmp6_id) == ident) |
---|
1436 | return 1; |
---|
1437 | else |
---|
1438 | return 0; |
---|
1439 | } |
---|
1440 | |
---|
1441 | static int |
---|
1442 | mynireply(const struct icmp6_nodeinfo *nip) |
---|
1443 | { |
---|
1444 | if (memcmp(nip->icmp6_ni_nonce + sizeof(u_int16_t), |
---|
1445 | nonce + sizeof(u_int16_t), |
---|
1446 | sizeof(nonce) - sizeof(u_int16_t)) == 0) |
---|
1447 | return 1; |
---|
1448 | else |
---|
1449 | return 0; |
---|
1450 | } |
---|
1451 | |
---|
1452 | static char * |
---|
1453 | dnsdecode(const u_char **sp, const u_char *ep, const u_char *base, char *buf, |
---|
1454 | size_t bufsiz) |
---|
1455 | /*base for compressed name*/ |
---|
1456 | { |
---|
1457 | int i; |
---|
1458 | const u_char *cp; |
---|
1459 | char cresult[MAXDNAME + 1]; |
---|
1460 | const u_char *comp; |
---|
1461 | int l; |
---|
1462 | |
---|
1463 | cp = *sp; |
---|
1464 | *buf = '\0'; |
---|
1465 | |
---|
1466 | if (cp >= ep) |
---|
1467 | return NULL; |
---|
1468 | while (cp < ep) { |
---|
1469 | i = *cp; |
---|
1470 | if (i == 0 || cp != *sp) { |
---|
1471 | if (strlcat((char *)buf, ".", bufsiz) >= bufsiz) |
---|
1472 | return NULL; /*result overrun*/ |
---|
1473 | } |
---|
1474 | if (i == 0) |
---|
1475 | break; |
---|
1476 | cp++; |
---|
1477 | |
---|
1478 | if ((i & 0xc0) == 0xc0 && cp - base > (i & 0x3f)) { |
---|
1479 | /* DNS compression */ |
---|
1480 | if (!base) |
---|
1481 | return NULL; |
---|
1482 | |
---|
1483 | comp = base + (i & 0x3f); |
---|
1484 | if (dnsdecode(&comp, cp, base, cresult, |
---|
1485 | sizeof(cresult)) == NULL) |
---|
1486 | return NULL; |
---|
1487 | if (strlcat(buf, cresult, bufsiz) >= bufsiz) |
---|
1488 | return NULL; /*result overrun*/ |
---|
1489 | break; |
---|
1490 | } else if ((i & 0x3f) == i) { |
---|
1491 | if (i > ep - cp) |
---|
1492 | return NULL; /*source overrun*/ |
---|
1493 | while (i-- > 0 && cp < ep) { |
---|
1494 | l = snprintf(cresult, sizeof(cresult), |
---|
1495 | isprint(*cp) ? "%c" : "\\%03o", *cp & 0xff); |
---|
1496 | if ((size_t)l >= sizeof(cresult) || l < 0) |
---|
1497 | return NULL; |
---|
1498 | if (strlcat(buf, cresult, bufsiz) >= bufsiz) |
---|
1499 | return NULL; /*result overrun*/ |
---|
1500 | cp++; |
---|
1501 | } |
---|
1502 | } else |
---|
1503 | return NULL; /*invalid label*/ |
---|
1504 | } |
---|
1505 | if (i != 0) |
---|
1506 | return NULL; /*not terminated*/ |
---|
1507 | cp++; |
---|
1508 | *sp = cp; |
---|
1509 | return buf; |
---|
1510 | } |
---|
1511 | |
---|
1512 | /* |
---|
1513 | * pr_pack -- |
---|
1514 | * Print out the packet, if it came from us. This logic is necessary |
---|
1515 | * because ALL readers of the ICMP socket get a copy of ALL ICMP packets |
---|
1516 | * which arrive ('tis only fair). This permits multiple copies of this |
---|
1517 | * program to be run without having intermingled output (or statistics!). |
---|
1518 | */ |
---|
1519 | static void |
---|
1520 | pr_pack(u_char *buf, int cc, struct msghdr *mhdr) |
---|
1521 | { |
---|
1522 | #define safeputc(c) printf((isprint((c)) ? "%c" : "\\%03o"), c) |
---|
1523 | struct icmp6_hdr *icp; |
---|
1524 | struct icmp6_nodeinfo *ni; |
---|
1525 | int i; |
---|
1526 | int hoplim; |
---|
1527 | struct sockaddr *from; |
---|
1528 | int fromlen; |
---|
1529 | u_char *cp = NULL, *dp, *end = buf + cc; |
---|
1530 | struct in6_pktinfo *pktinfo = NULL; |
---|
1531 | struct timeval tv, tp; |
---|
1532 | struct tv32 *tpp; |
---|
1533 | double triptime = 0; |
---|
1534 | int dupflag; |
---|
1535 | size_t off; |
---|
1536 | int oldfqdn; |
---|
1537 | u_int16_t seq; |
---|
1538 | char dnsname[MAXDNAME + 1]; |
---|
1539 | |
---|
1540 | (void)gettimeofday(&tv, NULL); |
---|
1541 | |
---|
1542 | if (!mhdr || !mhdr->msg_name || |
---|
1543 | mhdr->msg_namelen != sizeof(struct sockaddr_in6) || |
---|
1544 | ((struct sockaddr *)mhdr->msg_name)->sa_family != AF_INET6) { |
---|
1545 | if (options & F_VERBOSE) |
---|
1546 | warnx("invalid peername"); |
---|
1547 | return; |
---|
1548 | } |
---|
1549 | from = (struct sockaddr *)mhdr->msg_name; |
---|
1550 | fromlen = mhdr->msg_namelen; |
---|
1551 | if (cc < (int)sizeof(struct icmp6_hdr)) { |
---|
1552 | if (options & F_VERBOSE) |
---|
1553 | warnx("packet too short (%d bytes) from %s", cc, |
---|
1554 | pr_addr(from, fromlen)); |
---|
1555 | return; |
---|
1556 | } |
---|
1557 | if (((mhdr->msg_flags & MSG_CTRUNC) != 0) && |
---|
1558 | (options & F_VERBOSE) != 0) |
---|
1559 | warnx("some control data discarded, insufficient buffer size"); |
---|
1560 | icp = (struct icmp6_hdr *)buf; |
---|
1561 | ni = (struct icmp6_nodeinfo *)buf; |
---|
1562 | off = 0; |
---|
1563 | |
---|
1564 | if ((hoplim = get_hoplim(mhdr)) == -1) { |
---|
1565 | warnx("failed to get receiving hop limit"); |
---|
1566 | return; |
---|
1567 | } |
---|
1568 | if ((pktinfo = get_rcvpktinfo(mhdr)) == NULL) { |
---|
1569 | warnx("failed to get receiving packet information"); |
---|
1570 | return; |
---|
1571 | } |
---|
1572 | |
---|
1573 | if (icp->icmp6_type == ICMP6_ECHO_REPLY && myechoreply(icp)) { |
---|
1574 | seq = ntohs(icp->icmp6_seq); |
---|
1575 | ++nreceived; |
---|
1576 | if (timing) { |
---|
1577 | tpp = (struct tv32 *)(icp + 1); |
---|
1578 | tp.tv_sec = ntohl(tpp->tv32_sec); |
---|
1579 | tp.tv_usec = ntohl(tpp->tv32_usec); |
---|
1580 | tvsub(&tv, &tp); |
---|
1581 | triptime = ((double)tv.tv_sec) * 1000.0 + |
---|
1582 | ((double)tv.tv_usec) / 1000.0; |
---|
1583 | tsum += triptime; |
---|
1584 | tsumsq += triptime * triptime; |
---|
1585 | if (triptime < tmin) |
---|
1586 | tmin = triptime; |
---|
1587 | if (triptime > tmax) |
---|
1588 | tmax = triptime; |
---|
1589 | } |
---|
1590 | |
---|
1591 | if (TST(seq % mx_dup_ck)) { |
---|
1592 | ++nrepeats; |
---|
1593 | --nreceived; |
---|
1594 | dupflag = 1; |
---|
1595 | } else { |
---|
1596 | SET(seq % mx_dup_ck); |
---|
1597 | dupflag = 0; |
---|
1598 | } |
---|
1599 | |
---|
1600 | if (options & F_QUIET) |
---|
1601 | return; |
---|
1602 | |
---|
1603 | if (options & F_WAITTIME && triptime > waittime) { |
---|
1604 | ++nrcvtimeout; |
---|
1605 | return; |
---|
1606 | } |
---|
1607 | |
---|
1608 | if (options & F_FLOOD) |
---|
1609 | (void)write(STDOUT_FILENO, &BSPACE, 1); |
---|
1610 | else { |
---|
1611 | if (options & F_AUDIBLE) |
---|
1612 | (void)write(STDOUT_FILENO, &BBELL, 1); |
---|
1613 | (void)printf("%d bytes from %s, icmp_seq=%u", cc, |
---|
1614 | pr_addr(from, fromlen), seq); |
---|
1615 | (void)printf(" hlim=%d", hoplim); |
---|
1616 | if ((options & F_VERBOSE) != 0) { |
---|
1617 | struct sockaddr_in6 dstsa; |
---|
1618 | |
---|
1619 | memset(&dstsa, 0, sizeof(dstsa)); |
---|
1620 | dstsa.sin6_family = AF_INET6; |
---|
1621 | dstsa.sin6_len = sizeof(dstsa); |
---|
1622 | dstsa.sin6_scope_id = pktinfo->ipi6_ifindex; |
---|
1623 | dstsa.sin6_addr = pktinfo->ipi6_addr; |
---|
1624 | (void)printf(" dst=%s", |
---|
1625 | pr_addr((struct sockaddr *)&dstsa, |
---|
1626 | sizeof(dstsa))); |
---|
1627 | } |
---|
1628 | if (timing) |
---|
1629 | (void)printf(" time=%.3f ms", triptime); |
---|
1630 | if (dupflag) |
---|
1631 | (void)printf("(DUP!)"); |
---|
1632 | /* check the data */ |
---|
1633 | cp = buf + off + ICMP6ECHOLEN + ICMP6ECHOTMLEN; |
---|
1634 | dp = outpack + ICMP6ECHOLEN + ICMP6ECHOTMLEN; |
---|
1635 | for (i = 8; cp < end; ++i, ++cp, ++dp) { |
---|
1636 | if (*cp != *dp) { |
---|
1637 | (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp); |
---|
1638 | break; |
---|
1639 | } |
---|
1640 | } |
---|
1641 | } |
---|
1642 | } else if (icp->icmp6_type == ICMP6_NI_REPLY && mynireply(ni)) { |
---|
1643 | seq = ntohs(*(u_int16_t *)ni->icmp6_ni_nonce); |
---|
1644 | ++nreceived; |
---|
1645 | if (TST(seq % mx_dup_ck)) { |
---|
1646 | ++nrepeats; |
---|
1647 | --nreceived; |
---|
1648 | dupflag = 1; |
---|
1649 | } else { |
---|
1650 | SET(seq % mx_dup_ck); |
---|
1651 | dupflag = 0; |
---|
1652 | } |
---|
1653 | |
---|
1654 | if (options & F_QUIET) |
---|
1655 | return; |
---|
1656 | |
---|
1657 | (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen)); |
---|
1658 | |
---|
1659 | switch (ntohs(ni->ni_code)) { |
---|
1660 | case ICMP6_NI_SUCCESS: |
---|
1661 | break; |
---|
1662 | case ICMP6_NI_REFUSED: |
---|
1663 | printf("refused, type 0x%x", ntohs(ni->ni_type)); |
---|
1664 | goto fqdnend; |
---|
1665 | case ICMP6_NI_UNKNOWN: |
---|
1666 | printf("unknown, type 0x%x", ntohs(ni->ni_type)); |
---|
1667 | goto fqdnend; |
---|
1668 | default: |
---|
1669 | printf("unknown code 0x%x, type 0x%x", |
---|
1670 | ntohs(ni->ni_code), ntohs(ni->ni_type)); |
---|
1671 | goto fqdnend; |
---|
1672 | } |
---|
1673 | |
---|
1674 | switch (ntohs(ni->ni_qtype)) { |
---|
1675 | case NI_QTYPE_NOOP: |
---|
1676 | printf("NodeInfo NOOP"); |
---|
1677 | break; |
---|
1678 | case NI_QTYPE_SUPTYPES: |
---|
1679 | pr_suptypes(ni, end - (u_char *)ni); |
---|
1680 | break; |
---|
1681 | case NI_QTYPE_NODEADDR: |
---|
1682 | pr_nodeaddr(ni, end - (u_char *)ni); |
---|
1683 | break; |
---|
1684 | case NI_QTYPE_FQDN: |
---|
1685 | default: /* XXX: for backward compatibility */ |
---|
1686 | cp = (u_char *)ni + ICMP6_NIRLEN; |
---|
1687 | if (buf[off + ICMP6_NIRLEN] == |
---|
1688 | cc - off - ICMP6_NIRLEN - 1) |
---|
1689 | oldfqdn = 1; |
---|
1690 | else |
---|
1691 | oldfqdn = 0; |
---|
1692 | if (oldfqdn) { |
---|
1693 | cp++; /* skip length */ |
---|
1694 | while (cp < end) { |
---|
1695 | safeputc(*cp & 0xff); |
---|
1696 | cp++; |
---|
1697 | } |
---|
1698 | } else { |
---|
1699 | i = 0; |
---|
1700 | while (cp < end) { |
---|
1701 | if (dnsdecode((const u_char **)&cp, end, |
---|
1702 | (const u_char *)(ni + 1), dnsname, |
---|
1703 | sizeof(dnsname)) == NULL) { |
---|
1704 | printf("???"); |
---|
1705 | break; |
---|
1706 | } |
---|
1707 | /* |
---|
1708 | * name-lookup special handling for |
---|
1709 | * truncated name |
---|
1710 | */ |
---|
1711 | if (cp + 1 <= end && !*cp && |
---|
1712 | strlen(dnsname) > 0) { |
---|
1713 | dnsname[strlen(dnsname) - 1] = '\0'; |
---|
1714 | cp++; |
---|
1715 | } |
---|
1716 | printf("%s%s", i > 0 ? "," : "", |
---|
1717 | dnsname); |
---|
1718 | } |
---|
1719 | } |
---|
1720 | if (options & F_VERBOSE) { |
---|
1721 | int32_t ttl; |
---|
1722 | int comma = 0; |
---|
1723 | |
---|
1724 | (void)printf(" ("); /*)*/ |
---|
1725 | |
---|
1726 | switch (ni->ni_code) { |
---|
1727 | case ICMP6_NI_REFUSED: |
---|
1728 | (void)printf("refused"); |
---|
1729 | comma++; |
---|
1730 | break; |
---|
1731 | case ICMP6_NI_UNKNOWN: |
---|
1732 | (void)printf("unknown qtype"); |
---|
1733 | comma++; |
---|
1734 | break; |
---|
1735 | } |
---|
1736 | |
---|
1737 | if ((end - (u_char *)ni) < ICMP6_NIRLEN) { |
---|
1738 | /* case of refusion, unknown */ |
---|
1739 | /*(*/ |
---|
1740 | putchar(')'); |
---|
1741 | goto fqdnend; |
---|
1742 | } |
---|
1743 | ttl = (int32_t)ntohl(*(u_long *)&buf[off+ICMP6ECHOLEN+8]); |
---|
1744 | if (comma) |
---|
1745 | printf(","); |
---|
1746 | if (!(ni->ni_flags & NI_FQDN_FLAG_VALIDTTL)) { |
---|
1747 | (void)printf("TTL=%d:meaningless", |
---|
1748 | (int)ttl); |
---|
1749 | } else { |
---|
1750 | if (ttl < 0) { |
---|
1751 | (void)printf("TTL=%d:invalid", |
---|
1752 | ttl); |
---|
1753 | } else |
---|
1754 | (void)printf("TTL=%d", ttl); |
---|
1755 | } |
---|
1756 | comma++; |
---|
1757 | |
---|
1758 | if (oldfqdn) { |
---|
1759 | if (comma) |
---|
1760 | printf(","); |
---|
1761 | printf("03 draft"); |
---|
1762 | comma++; |
---|
1763 | } else { |
---|
1764 | cp = (u_char *)ni + ICMP6_NIRLEN; |
---|
1765 | if (cp == end) { |
---|
1766 | if (comma) |
---|
1767 | printf(","); |
---|
1768 | printf("no name"); |
---|
1769 | comma++; |
---|
1770 | } |
---|
1771 | } |
---|
1772 | |
---|
1773 | if (buf[off + ICMP6_NIRLEN] != |
---|
1774 | cc - off - ICMP6_NIRLEN - 1 && oldfqdn) { |
---|
1775 | if (comma) |
---|
1776 | printf(","); |
---|
1777 | (void)printf("invalid namelen:%d/%lu", |
---|
1778 | buf[off + ICMP6_NIRLEN], |
---|
1779 | (u_long)cc - off - ICMP6_NIRLEN - 1); |
---|
1780 | comma++; |
---|
1781 | } |
---|
1782 | /*(*/ |
---|
1783 | putchar(')'); |
---|
1784 | } |
---|
1785 | fqdnend: |
---|
1786 | ; |
---|
1787 | } |
---|
1788 | } else { |
---|
1789 | /* We've got something other than an ECHOREPLY */ |
---|
1790 | if (!(options & F_VERBOSE)) |
---|
1791 | return; |
---|
1792 | (void)printf("%d bytes from %s: ", cc, pr_addr(from, fromlen)); |
---|
1793 | pr_icmph(icp, end); |
---|
1794 | } |
---|
1795 | |
---|
1796 | if (!(options & F_FLOOD)) { |
---|
1797 | (void)putchar('\n'); |
---|
1798 | if (options & F_VERBOSE) |
---|
1799 | pr_exthdrs(mhdr); |
---|
1800 | (void)fflush(stdout); |
---|
1801 | } |
---|
1802 | #undef safeputc |
---|
1803 | } |
---|
1804 | |
---|
1805 | static void |
---|
1806 | pr_exthdrs(struct msghdr *mhdr) |
---|
1807 | { |
---|
1808 | ssize_t bufsize; |
---|
1809 | void *bufp; |
---|
1810 | struct cmsghdr *cm; |
---|
1811 | |
---|
1812 | bufsize = 0; |
---|
1813 | bufp = mhdr->msg_control; |
---|
1814 | for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; |
---|
1815 | cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { |
---|
1816 | if (cm->cmsg_level != IPPROTO_IPV6) |
---|
1817 | continue; |
---|
1818 | |
---|
1819 | bufsize = CONTROLLEN - ((caddr_t)CMSG_DATA(cm) - (caddr_t)bufp); |
---|
1820 | if (bufsize <= 0) |
---|
1821 | continue; |
---|
1822 | switch (cm->cmsg_type) { |
---|
1823 | case IPV6_HOPOPTS: |
---|
1824 | printf(" HbH Options: "); |
---|
1825 | pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize); |
---|
1826 | break; |
---|
1827 | case IPV6_DSTOPTS: |
---|
1828 | #ifdef IPV6_RTHDRDSTOPTS |
---|
1829 | case IPV6_RTHDRDSTOPTS: |
---|
1830 | #endif |
---|
1831 | printf(" Dst Options: "); |
---|
1832 | pr_ip6opt(CMSG_DATA(cm), (size_t)bufsize); |
---|
1833 | break; |
---|
1834 | case IPV6_RTHDR: |
---|
1835 | printf(" Routing: "); |
---|
1836 | pr_rthdr(CMSG_DATA(cm), (size_t)bufsize); |
---|
1837 | break; |
---|
1838 | } |
---|
1839 | } |
---|
1840 | } |
---|
1841 | |
---|
1842 | #ifdef USE_RFC2292BIS |
---|
1843 | static void |
---|
1844 | pr_ip6opt(void *extbuf, size_t bufsize) |
---|
1845 | { |
---|
1846 | struct ip6_hbh *ext; |
---|
1847 | int currentlen; |
---|
1848 | u_int8_t type; |
---|
1849 | socklen_t extlen, len; |
---|
1850 | void *databuf; |
---|
1851 | size_t offset; |
---|
1852 | u_int16_t value2; |
---|
1853 | u_int32_t value4; |
---|
1854 | |
---|
1855 | ext = (struct ip6_hbh *)extbuf; |
---|
1856 | extlen = (ext->ip6h_len + 1) * 8; |
---|
1857 | printf("nxt %u, len %u (%lu bytes)\n", ext->ip6h_nxt, |
---|
1858 | (unsigned int)ext->ip6h_len, (unsigned long)extlen); |
---|
1859 | |
---|
1860 | /* |
---|
1861 | * Bounds checking on the ancillary data buffer: |
---|
1862 | * subtract the size of a cmsg structure from the buffer size. |
---|
1863 | */ |
---|
1864 | if (bufsize < (extlen + CMSG_SPACE(0))) { |
---|
1865 | extlen = bufsize - CMSG_SPACE(0); |
---|
1866 | warnx("options truncated, showing only %u (total=%u)", |
---|
1867 | (unsigned int)(extlen / 8 - 1), |
---|
1868 | (unsigned int)(ext->ip6h_len)); |
---|
1869 | } |
---|
1870 | |
---|
1871 | currentlen = 0; |
---|
1872 | while (1) { |
---|
1873 | currentlen = inet6_opt_next(extbuf, extlen, currentlen, |
---|
1874 | &type, &len, &databuf); |
---|
1875 | if (currentlen == -1) |
---|
1876 | break; |
---|
1877 | switch (type) { |
---|
1878 | /* |
---|
1879 | * Note that inet6_opt_next automatically skips any padding |
---|
1880 | * optins. |
---|
1881 | */ |
---|
1882 | case IP6OPT_JUMBO: |
---|
1883 | offset = 0; |
---|
1884 | offset = inet6_opt_get_val(databuf, offset, |
---|
1885 | &value4, sizeof(value4)); |
---|
1886 | printf(" Jumbo Payload Opt: Length %u\n", |
---|
1887 | (u_int32_t)ntohl(value4)); |
---|
1888 | break; |
---|
1889 | case IP6OPT_ROUTER_ALERT: |
---|
1890 | offset = 0; |
---|
1891 | offset = inet6_opt_get_val(databuf, offset, |
---|
1892 | &value2, sizeof(value2)); |
---|
1893 | printf(" Router Alert Opt: Type %u\n", |
---|
1894 | ntohs(value2)); |
---|
1895 | break; |
---|
1896 | default: |
---|
1897 | printf(" Received Opt %u len %lu\n", |
---|
1898 | type, (unsigned long)len); |
---|
1899 | break; |
---|
1900 | } |
---|
1901 | } |
---|
1902 | return; |
---|
1903 | } |
---|
1904 | #else /* !USE_RFC2292BIS */ |
---|
1905 | /* ARGSUSED */ |
---|
1906 | static void |
---|
1907 | pr_ip6opt(void *extbuf, size_t bufsize __unused) |
---|
1908 | { |
---|
1909 | putchar('\n'); |
---|
1910 | return; |
---|
1911 | } |
---|
1912 | #endif /* USE_RFC2292BIS */ |
---|
1913 | |
---|
1914 | #ifdef USE_RFC2292BIS |
---|
1915 | static void |
---|
1916 | pr_rthdr(void *extbuf, size_t bufsize) |
---|
1917 | { |
---|
1918 | struct in6_addr *in6; |
---|
1919 | char ntopbuf[INET6_ADDRSTRLEN]; |
---|
1920 | struct ip6_rthdr *rh = (struct ip6_rthdr *)extbuf; |
---|
1921 | int i, segments, origsegs, rthsize, size0, size1; |
---|
1922 | |
---|
1923 | /* print fixed part of the header */ |
---|
1924 | printf("nxt %u, len %u (%d bytes), type %u, ", rh->ip6r_nxt, |
---|
1925 | rh->ip6r_len, (rh->ip6r_len + 1) << 3, rh->ip6r_type); |
---|
1926 | if ((segments = inet6_rth_segments(extbuf)) >= 0) { |
---|
1927 | printf("%d segments, ", segments); |
---|
1928 | printf("%d left\n", rh->ip6r_segleft); |
---|
1929 | } else { |
---|
1930 | printf("segments unknown, "); |
---|
1931 | printf("%d left\n", rh->ip6r_segleft); |
---|
1932 | return; |
---|
1933 | } |
---|
1934 | |
---|
1935 | /* |
---|
1936 | * Bounds checking on the ancillary data buffer. When calculating |
---|
1937 | * the number of items to show keep in mind: |
---|
1938 | * - The size of the cmsg structure |
---|
1939 | * - The size of one segment (the size of a Type 0 routing header) |
---|
1940 | * - When dividing add a fudge factor of one in case the |
---|
1941 | * dividend is not evenly divisible by the divisor |
---|
1942 | */ |
---|
1943 | rthsize = (rh->ip6r_len + 1) * 8; |
---|
1944 | if (bufsize < (rthsize + CMSG_SPACE(0))) { |
---|
1945 | origsegs = segments; |
---|
1946 | size0 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 0); |
---|
1947 | size1 = inet6_rth_space(IPV6_RTHDR_TYPE_0, 1); |
---|
1948 | segments -= (rthsize - (bufsize - CMSG_SPACE(0))) / |
---|
1949 | (size1 - size0) + 1; |
---|
1950 | warnx("segments truncated, showing only %d (total=%d)", |
---|
1951 | segments, origsegs); |
---|
1952 | } |
---|
1953 | |
---|
1954 | for (i = 0; i < segments; i++) { |
---|
1955 | in6 = inet6_rth_getaddr(extbuf, i); |
---|
1956 | if (in6 == NULL) |
---|
1957 | printf(" [%d]<NULL>\n", i); |
---|
1958 | else { |
---|
1959 | if (!inet_ntop(AF_INET6, in6, ntopbuf, |
---|
1960 | sizeof(ntopbuf))) |
---|
1961 | strlcpy(ntopbuf, "?", sizeof(ntopbuf)); |
---|
1962 | printf(" [%d]%s\n", i, ntopbuf); |
---|
1963 | } |
---|
1964 | } |
---|
1965 | |
---|
1966 | return; |
---|
1967 | |
---|
1968 | } |
---|
1969 | |
---|
1970 | #else /* !USE_RFC2292BIS */ |
---|
1971 | /* ARGSUSED */ |
---|
1972 | static void |
---|
1973 | pr_rthdr(void *extbuf, size_t bufsize __unused) |
---|
1974 | { |
---|
1975 | putchar('\n'); |
---|
1976 | return; |
---|
1977 | } |
---|
1978 | #endif /* USE_RFC2292BIS */ |
---|
1979 | |
---|
1980 | static int |
---|
1981 | pr_bitrange(u_int32_t v, int soff, int ii) |
---|
1982 | { |
---|
1983 | int off; |
---|
1984 | int i; |
---|
1985 | |
---|
1986 | off = 0; |
---|
1987 | while (off < 32) { |
---|
1988 | /* shift till we have 0x01 */ |
---|
1989 | if ((v & 0x01) == 0) { |
---|
1990 | if (ii > 1) |
---|
1991 | printf("-%u", soff + off - 1); |
---|
1992 | ii = 0; |
---|
1993 | switch (v & 0x0f) { |
---|
1994 | case 0x00: |
---|
1995 | v >>= 4; |
---|
1996 | off += 4; |
---|
1997 | continue; |
---|
1998 | case 0x08: |
---|
1999 | v >>= 3; |
---|
2000 | off += 3; |
---|
2001 | continue; |
---|
2002 | case 0x04: case 0x0c: |
---|
2003 | v >>= 2; |
---|
2004 | off += 2; |
---|
2005 | continue; |
---|
2006 | default: |
---|
2007 | v >>= 1; |
---|
2008 | off += 1; |
---|
2009 | continue; |
---|
2010 | } |
---|
2011 | } |
---|
2012 | |
---|
2013 | /* we have 0x01 with us */ |
---|
2014 | for (i = 0; i < 32 - off; i++) { |
---|
2015 | if ((v & (0x01 << i)) == 0) |
---|
2016 | break; |
---|
2017 | } |
---|
2018 | if (!ii) |
---|
2019 | printf(" %u", soff + off); |
---|
2020 | ii += i; |
---|
2021 | v >>= i; off += i; |
---|
2022 | } |
---|
2023 | return ii; |
---|
2024 | } |
---|
2025 | |
---|
2026 | static void |
---|
2027 | pr_suptypes(struct icmp6_nodeinfo *ni, size_t nilen) |
---|
2028 | /* ni->qtype must be SUPTYPES */ |
---|
2029 | { |
---|
2030 | size_t clen; |
---|
2031 | u_int32_t v; |
---|
2032 | const u_char *cp, *end; |
---|
2033 | u_int16_t cur; |
---|
2034 | struct cbit { |
---|
2035 | u_int16_t words; /*32bit count*/ |
---|
2036 | u_int16_t skip; |
---|
2037 | } cbit; |
---|
2038 | #define MAXQTYPES (1 << 16) |
---|
2039 | size_t off; |
---|
2040 | int b; |
---|
2041 | |
---|
2042 | cp = (u_char *)(ni + 1); |
---|
2043 | end = ((u_char *)ni) + nilen; |
---|
2044 | cur = 0; |
---|
2045 | b = 0; |
---|
2046 | |
---|
2047 | printf("NodeInfo Supported Qtypes"); |
---|
2048 | if (options & F_VERBOSE) { |
---|
2049 | if (ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) |
---|
2050 | printf(", compressed bitmap"); |
---|
2051 | else |
---|
2052 | printf(", raw bitmap"); |
---|
2053 | } |
---|
2054 | |
---|
2055 | while (cp < end) { |
---|
2056 | clen = (size_t)(end - cp); |
---|
2057 | if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) == 0) { |
---|
2058 | if (clen == 0 || clen > MAXQTYPES / 8 || |
---|
2059 | clen % sizeof(v)) { |
---|
2060 | printf("???"); |
---|
2061 | return; |
---|
2062 | } |
---|
2063 | } else { |
---|
2064 | if (clen < sizeof(cbit) || clen % sizeof(v)) |
---|
2065 | return; |
---|
2066 | memcpy(&cbit, cp, sizeof(cbit)); |
---|
2067 | if (sizeof(cbit) + ntohs(cbit.words) * sizeof(v) > |
---|
2068 | clen) |
---|
2069 | return; |
---|
2070 | cp += sizeof(cbit); |
---|
2071 | clen = ntohs(cbit.words) * sizeof(v); |
---|
2072 | if (cur + clen * 8 + (u_long)ntohs(cbit.skip) * 32 > |
---|
2073 | MAXQTYPES) |
---|
2074 | return; |
---|
2075 | } |
---|
2076 | |
---|
2077 | for (off = 0; off < clen; off += sizeof(v)) { |
---|
2078 | memcpy(&v, cp + off, sizeof(v)); |
---|
2079 | v = (u_int32_t)ntohl(v); |
---|
2080 | b = pr_bitrange(v, (int)(cur + off * 8), b); |
---|
2081 | } |
---|
2082 | /* flush the remaining bits */ |
---|
2083 | b = pr_bitrange(0, (int)(cur + off * 8), b); |
---|
2084 | |
---|
2085 | cp += clen; |
---|
2086 | cur += clen * 8; |
---|
2087 | if ((ni->ni_flags & NI_SUPTYPE_FLAG_COMPRESS) != 0) |
---|
2088 | cur += ntohs(cbit.skip) * 32; |
---|
2089 | } |
---|
2090 | } |
---|
2091 | |
---|
2092 | static void |
---|
2093 | pr_nodeaddr(struct icmp6_nodeinfo *ni, int nilen) |
---|
2094 | /* ni->qtype must be NODEADDR */ |
---|
2095 | { |
---|
2096 | u_char *cp = (u_char *)(ni + 1); |
---|
2097 | char ntop_buf[INET6_ADDRSTRLEN]; |
---|
2098 | int withttl = 0; |
---|
2099 | |
---|
2100 | nilen -= sizeof(struct icmp6_nodeinfo); |
---|
2101 | |
---|
2102 | if (options & F_VERBOSE) { |
---|
2103 | switch (ni->ni_code) { |
---|
2104 | case ICMP6_NI_REFUSED: |
---|
2105 | (void)printf("refused"); |
---|
2106 | break; |
---|
2107 | case ICMP6_NI_UNKNOWN: |
---|
2108 | (void)printf("unknown qtype"); |
---|
2109 | break; |
---|
2110 | } |
---|
2111 | if (ni->ni_flags & NI_NODEADDR_FLAG_TRUNCATE) |
---|
2112 | (void)printf(" truncated"); |
---|
2113 | } |
---|
2114 | putchar('\n'); |
---|
2115 | if (nilen <= 0) |
---|
2116 | printf(" no address\n"); |
---|
2117 | |
---|
2118 | /* |
---|
2119 | * In icmp-name-lookups 05 and later, TTL of each returned address |
---|
2120 | * is contained in the resposne. We try to detect the version |
---|
2121 | * by the length of the data, but note that the detection algorithm |
---|
2122 | * is incomplete. We assume the latest draft by default. |
---|
2123 | */ |
---|
2124 | if (nilen % (sizeof(u_int32_t) + sizeof(struct in6_addr)) == 0) |
---|
2125 | withttl = 1; |
---|
2126 | while (nilen > 0) { |
---|
2127 | u_int32_t ttl; |
---|
2128 | |
---|
2129 | if (withttl) { |
---|
2130 | /* XXX: alignment? */ |
---|
2131 | ttl = (u_int32_t)ntohl(*(u_int32_t *)cp); |
---|
2132 | cp += sizeof(u_int32_t); |
---|
2133 | nilen -= sizeof(u_int32_t); |
---|
2134 | } |
---|
2135 | |
---|
2136 | if (inet_ntop(AF_INET6, cp, ntop_buf, sizeof(ntop_buf)) == |
---|
2137 | NULL) |
---|
2138 | strlcpy(ntop_buf, "?", sizeof(ntop_buf)); |
---|
2139 | printf(" %s", ntop_buf); |
---|
2140 | if (withttl) { |
---|
2141 | if (ttl == 0xffffffff) { |
---|
2142 | /* |
---|
2143 | * XXX: can this convention be applied to all |
---|
2144 | * type of TTL (i.e. non-ND TTL)? |
---|
2145 | */ |
---|
2146 | printf("(TTL=infty)"); |
---|
2147 | } |
---|
2148 | else |
---|
2149 | printf("(TTL=%u)", ttl); |
---|
2150 | } |
---|
2151 | putchar('\n'); |
---|
2152 | |
---|
2153 | nilen -= sizeof(struct in6_addr); |
---|
2154 | cp += sizeof(struct in6_addr); |
---|
2155 | } |
---|
2156 | } |
---|
2157 | |
---|
2158 | static int |
---|
2159 | get_hoplim(struct msghdr *mhdr) |
---|
2160 | { |
---|
2161 | struct cmsghdr *cm; |
---|
2162 | |
---|
2163 | for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; |
---|
2164 | cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { |
---|
2165 | if (cm->cmsg_len == 0) |
---|
2166 | return(-1); |
---|
2167 | |
---|
2168 | if (cm->cmsg_level == IPPROTO_IPV6 && |
---|
2169 | cm->cmsg_type == IPV6_HOPLIMIT && |
---|
2170 | cm->cmsg_len == CMSG_LEN(sizeof(int))) |
---|
2171 | return(*(int *)CMSG_DATA(cm)); |
---|
2172 | } |
---|
2173 | |
---|
2174 | return(-1); |
---|
2175 | } |
---|
2176 | |
---|
2177 | static struct in6_pktinfo * |
---|
2178 | get_rcvpktinfo(struct msghdr *mhdr) |
---|
2179 | { |
---|
2180 | struct cmsghdr *cm; |
---|
2181 | |
---|
2182 | for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; |
---|
2183 | cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { |
---|
2184 | if (cm->cmsg_len == 0) |
---|
2185 | return(NULL); |
---|
2186 | |
---|
2187 | if (cm->cmsg_level == IPPROTO_IPV6 && |
---|
2188 | cm->cmsg_type == IPV6_PKTINFO && |
---|
2189 | cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo))) |
---|
2190 | return((struct in6_pktinfo *)CMSG_DATA(cm)); |
---|
2191 | } |
---|
2192 | |
---|
2193 | return(NULL); |
---|
2194 | } |
---|
2195 | |
---|
2196 | static int |
---|
2197 | get_pathmtu(struct msghdr *mhdr) |
---|
2198 | { |
---|
2199 | #ifdef IPV6_RECVPATHMTU |
---|
2200 | struct cmsghdr *cm; |
---|
2201 | struct ip6_mtuinfo *mtuctl = NULL; |
---|
2202 | |
---|
2203 | for (cm = (struct cmsghdr *)CMSG_FIRSTHDR(mhdr); cm; |
---|
2204 | cm = (struct cmsghdr *)CMSG_NXTHDR(mhdr, cm)) { |
---|
2205 | if (cm->cmsg_len == 0) |
---|
2206 | return(0); |
---|
2207 | |
---|
2208 | if (cm->cmsg_level == IPPROTO_IPV6 && |
---|
2209 | cm->cmsg_type == IPV6_PATHMTU && |
---|
2210 | cm->cmsg_len == CMSG_LEN(sizeof(struct ip6_mtuinfo))) { |
---|
2211 | mtuctl = (struct ip6_mtuinfo *)CMSG_DATA(cm); |
---|
2212 | |
---|
2213 | /* |
---|
2214 | * If the notified destination is different from |
---|
2215 | * the one we are pinging, just ignore the info. |
---|
2216 | * We check the scope ID only when both notified value |
---|
2217 | * and our own value have non-0 values, because we may |
---|
2218 | * have used the default scope zone ID for sending, |
---|
2219 | * in which case the scope ID value is 0. |
---|
2220 | */ |
---|
2221 | if (!IN6_ARE_ADDR_EQUAL(&mtuctl->ip6m_addr.sin6_addr, |
---|
2222 | &dst.sin6_addr) || |
---|
2223 | (mtuctl->ip6m_addr.sin6_scope_id && |
---|
2224 | dst.sin6_scope_id && |
---|
2225 | mtuctl->ip6m_addr.sin6_scope_id != |
---|
2226 | dst.sin6_scope_id)) { |
---|
2227 | if ((options & F_VERBOSE) != 0) { |
---|
2228 | printf("path MTU for %s is notified. " |
---|
2229 | "(ignored)\n", |
---|
2230 | pr_addr((struct sockaddr *)&mtuctl->ip6m_addr, |
---|
2231 | sizeof(mtuctl->ip6m_addr))); |
---|
2232 | } |
---|
2233 | return(0); |
---|
2234 | } |
---|
2235 | |
---|
2236 | /* |
---|
2237 | * Ignore an invalid MTU. XXX: can we just believe |
---|
2238 | * the kernel check? |
---|
2239 | */ |
---|
2240 | if (mtuctl->ip6m_mtu < IPV6_MMTU) |
---|
2241 | return(0); |
---|
2242 | |
---|
2243 | /* notification for our destination. return the MTU. */ |
---|
2244 | return((int)mtuctl->ip6m_mtu); |
---|
2245 | } |
---|
2246 | } |
---|
2247 | #endif |
---|
2248 | return(0); |
---|
2249 | } |
---|
2250 | |
---|
2251 | /* |
---|
2252 | * tvsub -- |
---|
2253 | * Subtract 2 timeval structs: out = out - in. Out is assumed to |
---|
2254 | * be >= in. |
---|
2255 | */ |
---|
2256 | static void |
---|
2257 | tvsub(struct timeval *out, struct timeval *in) |
---|
2258 | { |
---|
2259 | if ((out->tv_usec -= in->tv_usec) < 0) { |
---|
2260 | --out->tv_sec; |
---|
2261 | out->tv_usec += 1000000; |
---|
2262 | } |
---|
2263 | out->tv_sec -= in->tv_sec; |
---|
2264 | } |
---|
2265 | |
---|
2266 | /* |
---|
2267 | * onint -- |
---|
2268 | * SIGINT handler. |
---|
2269 | */ |
---|
2270 | /* ARGSUSED */ |
---|
2271 | static void |
---|
2272 | onint(int notused __unused) |
---|
2273 | { |
---|
2274 | /* |
---|
2275 | * When doing reverse DNS lookups, the seenint flag might not |
---|
2276 | * be noticed for a while. Just exit if we get a second SIGINT. |
---|
2277 | */ |
---|
2278 | if ((options & F_HOSTNAME) && seenint != 0) |
---|
2279 | _exit(nreceived ? 0 : 2); |
---|
2280 | } |
---|
2281 | |
---|
2282 | /* |
---|
2283 | * summary -- |
---|
2284 | * Print out statistics. |
---|
2285 | */ |
---|
2286 | static void |
---|
2287 | summary(void) |
---|
2288 | { |
---|
2289 | |
---|
2290 | (void)printf("\n--- %s ping6 statistics ---\n", hostname); |
---|
2291 | (void)printf("%ld packets transmitted, ", ntransmitted); |
---|
2292 | (void)printf("%ld packets received, ", nreceived); |
---|
2293 | if (nrepeats) |
---|
2294 | (void)printf("+%ld duplicates, ", nrepeats); |
---|
2295 | if (ntransmitted) { |
---|
2296 | if (nreceived > ntransmitted) |
---|
2297 | (void)printf("-- somebody's duplicating packets!"); |
---|
2298 | else |
---|
2299 | (void)printf("%.1f%% packet loss", |
---|
2300 | ((((double)ntransmitted - nreceived) * 100.0) / |
---|
2301 | ntransmitted)); |
---|
2302 | } |
---|
2303 | if (nrcvtimeout) |
---|
2304 | printf(", %ld packets out of wait time", nrcvtimeout); |
---|
2305 | (void)putchar('\n'); |
---|
2306 | if (nreceived && timing) { |
---|
2307 | /* Only display average to microseconds */ |
---|
2308 | double num = nreceived + nrepeats; |
---|
2309 | double avg = tsum / num; |
---|
2310 | double dev = sqrt(tsumsq / num - avg * avg); |
---|
2311 | (void)printf( |
---|
2312 | "round-trip min/avg/max/std-dev = %.3f/%.3f/%.3f/%.3f ms\n", |
---|
2313 | tmin, avg, tmax, dev); |
---|
2314 | (void)fflush(stdout); |
---|
2315 | } |
---|
2316 | (void)fflush(stdout); |
---|
2317 | } |
---|
2318 | |
---|
2319 | /*subject type*/ |
---|
2320 | static const char *niqcode[] = { |
---|
2321 | "IPv6 address", |
---|
2322 | "DNS label", /*or empty*/ |
---|
2323 | "IPv4 address", |
---|
2324 | }; |
---|
2325 | |
---|
2326 | /*result code*/ |
---|
2327 | static const char *nircode[] = { |
---|
2328 | "Success", "Refused", "Unknown", |
---|
2329 | }; |
---|
2330 | |
---|
2331 | |
---|
2332 | /* |
---|
2333 | * pr_icmph -- |
---|
2334 | * Print a descriptive string about an ICMP header. |
---|
2335 | */ |
---|
2336 | static void |
---|
2337 | pr_icmph(struct icmp6_hdr *icp, u_char *end) |
---|
2338 | { |
---|
2339 | char ntop_buf[INET6_ADDRSTRLEN]; |
---|
2340 | struct nd_redirect *red; |
---|
2341 | struct icmp6_nodeinfo *ni; |
---|
2342 | char dnsname[MAXDNAME + 1]; |
---|
2343 | const u_char *cp; |
---|
2344 | size_t l; |
---|
2345 | |
---|
2346 | switch (icp->icmp6_type) { |
---|
2347 | case ICMP6_DST_UNREACH: |
---|
2348 | switch (icp->icmp6_code) { |
---|
2349 | case ICMP6_DST_UNREACH_NOROUTE: |
---|
2350 | (void)printf("No Route to Destination\n"); |
---|
2351 | break; |
---|
2352 | case ICMP6_DST_UNREACH_ADMIN: |
---|
2353 | (void)printf("Destination Administratively " |
---|
2354 | "Unreachable\n"); |
---|
2355 | break; |
---|
2356 | case ICMP6_DST_UNREACH_BEYONDSCOPE: |
---|
2357 | (void)printf("Destination Unreachable Beyond Scope\n"); |
---|
2358 | break; |
---|
2359 | case ICMP6_DST_UNREACH_ADDR: |
---|
2360 | (void)printf("Destination Host Unreachable\n"); |
---|
2361 | break; |
---|
2362 | case ICMP6_DST_UNREACH_NOPORT: |
---|
2363 | (void)printf("Destination Port Unreachable\n"); |
---|
2364 | break; |
---|
2365 | default: |
---|
2366 | (void)printf("Destination Unreachable, Bad Code: %d\n", |
---|
2367 | icp->icmp6_code); |
---|
2368 | break; |
---|
2369 | } |
---|
2370 | /* Print returned IP header information */ |
---|
2371 | pr_retip((struct ip6_hdr *)(icp + 1), end); |
---|
2372 | break; |
---|
2373 | case ICMP6_PACKET_TOO_BIG: |
---|
2374 | (void)printf("Packet too big mtu = %d\n", |
---|
2375 | (int)ntohl(icp->icmp6_mtu)); |
---|
2376 | pr_retip((struct ip6_hdr *)(icp + 1), end); |
---|
2377 | break; |
---|
2378 | case ICMP6_TIME_EXCEEDED: |
---|
2379 | switch (icp->icmp6_code) { |
---|
2380 | case ICMP6_TIME_EXCEED_TRANSIT: |
---|
2381 | (void)printf("Time to live exceeded\n"); |
---|
2382 | break; |
---|
2383 | case ICMP6_TIME_EXCEED_REASSEMBLY: |
---|
2384 | (void)printf("Frag reassembly time exceeded\n"); |
---|
2385 | break; |
---|
2386 | default: |
---|
2387 | (void)printf("Time exceeded, Bad Code: %d\n", |
---|
2388 | icp->icmp6_code); |
---|
2389 | break; |
---|
2390 | } |
---|
2391 | pr_retip((struct ip6_hdr *)(icp + 1), end); |
---|
2392 | break; |
---|
2393 | case ICMP6_PARAM_PROB: |
---|
2394 | (void)printf("Parameter problem: "); |
---|
2395 | switch (icp->icmp6_code) { |
---|
2396 | case ICMP6_PARAMPROB_HEADER: |
---|
2397 | (void)printf("Erroneous Header "); |
---|
2398 | break; |
---|
2399 | case ICMP6_PARAMPROB_NEXTHEADER: |
---|
2400 | (void)printf("Unknown Nextheader "); |
---|
2401 | break; |
---|
2402 | case ICMP6_PARAMPROB_OPTION: |
---|
2403 | (void)printf("Unrecognized Option "); |
---|
2404 | break; |
---|
2405 | default: |
---|
2406 | (void)printf("Bad code(%d) ", icp->icmp6_code); |
---|
2407 | break; |
---|
2408 | } |
---|
2409 | (void)printf("pointer = 0x%02x\n", |
---|
2410 | (u_int32_t)ntohl(icp->icmp6_pptr)); |
---|
2411 | pr_retip((struct ip6_hdr *)(icp + 1), end); |
---|
2412 | break; |
---|
2413 | case ICMP6_ECHO_REQUEST: |
---|
2414 | (void)printf("Echo Request"); |
---|
2415 | /* XXX ID + Seq + Data */ |
---|
2416 | break; |
---|
2417 | case ICMP6_ECHO_REPLY: |
---|
2418 | (void)printf("Echo Reply"); |
---|
2419 | /* XXX ID + Seq + Data */ |
---|
2420 | break; |
---|
2421 | case ICMP6_MEMBERSHIP_QUERY: |
---|
2422 | (void)printf("Listener Query"); |
---|
2423 | break; |
---|
2424 | case ICMP6_MEMBERSHIP_REPORT: |
---|
2425 | (void)printf("Listener Report"); |
---|
2426 | break; |
---|
2427 | case ICMP6_MEMBERSHIP_REDUCTION: |
---|
2428 | (void)printf("Listener Done"); |
---|
2429 | break; |
---|
2430 | case ND_ROUTER_SOLICIT: |
---|
2431 | (void)printf("Router Solicitation"); |
---|
2432 | break; |
---|
2433 | case ND_ROUTER_ADVERT: |
---|
2434 | (void)printf("Router Advertisement"); |
---|
2435 | break; |
---|
2436 | case ND_NEIGHBOR_SOLICIT: |
---|
2437 | (void)printf("Neighbor Solicitation"); |
---|
2438 | break; |
---|
2439 | case ND_NEIGHBOR_ADVERT: |
---|
2440 | (void)printf("Neighbor Advertisement"); |
---|
2441 | break; |
---|
2442 | case ND_REDIRECT: |
---|
2443 | red = (struct nd_redirect *)icp; |
---|
2444 | (void)printf("Redirect\n"); |
---|
2445 | if (!inet_ntop(AF_INET6, &red->nd_rd_dst, ntop_buf, |
---|
2446 | sizeof(ntop_buf))) |
---|
2447 | strlcpy(ntop_buf, "?", sizeof(ntop_buf)); |
---|
2448 | (void)printf("Destination: %s", ntop_buf); |
---|
2449 | if (!inet_ntop(AF_INET6, &red->nd_rd_target, ntop_buf, |
---|
2450 | sizeof(ntop_buf))) |
---|
2451 | strlcpy(ntop_buf, "?", sizeof(ntop_buf)); |
---|
2452 | (void)printf(" New Target: %s", ntop_buf); |
---|
2453 | break; |
---|
2454 | case ICMP6_NI_QUERY: |
---|
2455 | (void)printf("Node Information Query"); |
---|
2456 | /* XXX ID + Seq + Data */ |
---|
2457 | ni = (struct icmp6_nodeinfo *)icp; |
---|
2458 | l = end - (u_char *)(ni + 1); |
---|
2459 | printf(", "); |
---|
2460 | switch (ntohs(ni->ni_qtype)) { |
---|
2461 | case NI_QTYPE_NOOP: |
---|
2462 | (void)printf("NOOP"); |
---|
2463 | break; |
---|
2464 | case NI_QTYPE_SUPTYPES: |
---|
2465 | (void)printf("Supported qtypes"); |
---|
2466 | break; |
---|
2467 | case NI_QTYPE_FQDN: |
---|
2468 | (void)printf("DNS name"); |
---|
2469 | break; |
---|
2470 | case NI_QTYPE_NODEADDR: |
---|
2471 | (void)printf("nodeaddr"); |
---|
2472 | break; |
---|
2473 | case NI_QTYPE_IPV4ADDR: |
---|
2474 | (void)printf("IPv4 nodeaddr"); |
---|
2475 | break; |
---|
2476 | default: |
---|
2477 | (void)printf("unknown qtype"); |
---|
2478 | break; |
---|
2479 | } |
---|
2480 | if (options & F_VERBOSE) { |
---|
2481 | switch (ni->ni_code) { |
---|
2482 | case ICMP6_NI_SUBJ_IPV6: |
---|
2483 | if (l == sizeof(struct in6_addr) && |
---|
2484 | inet_ntop(AF_INET6, ni + 1, ntop_buf, |
---|
2485 | sizeof(ntop_buf)) != NULL) { |
---|
2486 | (void)printf(", subject=%s(%s)", |
---|
2487 | niqcode[ni->ni_code], ntop_buf); |
---|
2488 | } else { |
---|
2489 | #if 1 |
---|
2490 | /* backward compat to -W */ |
---|
2491 | (void)printf(", oldfqdn"); |
---|
2492 | #else |
---|
2493 | (void)printf(", invalid"); |
---|
2494 | #endif |
---|
2495 | } |
---|
2496 | break; |
---|
2497 | case ICMP6_NI_SUBJ_FQDN: |
---|
2498 | if (end == (u_char *)(ni + 1)) { |
---|
2499 | (void)printf(", no subject"); |
---|
2500 | break; |
---|
2501 | } |
---|
2502 | printf(", subject=%s", niqcode[ni->ni_code]); |
---|
2503 | cp = (const u_char *)(ni + 1); |
---|
2504 | if (dnsdecode(&cp, end, NULL, dnsname, |
---|
2505 | sizeof(dnsname)) != NULL) |
---|
2506 | printf("(%s)", dnsname); |
---|
2507 | else |
---|
2508 | printf("(invalid)"); |
---|
2509 | break; |
---|
2510 | case ICMP6_NI_SUBJ_IPV4: |
---|
2511 | if (l == sizeof(struct in_addr) && |
---|
2512 | inet_ntop(AF_INET, ni + 1, ntop_buf, |
---|
2513 | sizeof(ntop_buf)) != NULL) { |
---|
2514 | (void)printf(", subject=%s(%s)", |
---|
2515 | niqcode[ni->ni_code], ntop_buf); |
---|
2516 | } else |
---|
2517 | (void)printf(", invalid"); |
---|
2518 | break; |
---|
2519 | default: |
---|
2520 | (void)printf(", invalid"); |
---|
2521 | break; |
---|
2522 | } |
---|
2523 | } |
---|
2524 | break; |
---|
2525 | case ICMP6_NI_REPLY: |
---|
2526 | (void)printf("Node Information Reply"); |
---|
2527 | /* XXX ID + Seq + Data */ |
---|
2528 | ni = (struct icmp6_nodeinfo *)icp; |
---|
2529 | printf(", "); |
---|
2530 | switch (ntohs(ni->ni_qtype)) { |
---|
2531 | case NI_QTYPE_NOOP: |
---|
2532 | (void)printf("NOOP"); |
---|
2533 | break; |
---|
2534 | case NI_QTYPE_SUPTYPES: |
---|
2535 | (void)printf("Supported qtypes"); |
---|
2536 | break; |
---|
2537 | case NI_QTYPE_FQDN: |
---|
2538 | (void)printf("DNS name"); |
---|
2539 | break; |
---|
2540 | case NI_QTYPE_NODEADDR: |
---|
2541 | (void)printf("nodeaddr"); |
---|
2542 | break; |
---|
2543 | case NI_QTYPE_IPV4ADDR: |
---|
2544 | (void)printf("IPv4 nodeaddr"); |
---|
2545 | break; |
---|
2546 | default: |
---|
2547 | (void)printf("unknown qtype"); |
---|
2548 | break; |
---|
2549 | } |
---|
2550 | if (options & F_VERBOSE) { |
---|
2551 | if (ni->ni_code > nitems(nircode)) |
---|
2552 | printf(", invalid"); |
---|
2553 | else |
---|
2554 | printf(", %s", nircode[ni->ni_code]); |
---|
2555 | } |
---|
2556 | break; |
---|
2557 | default: |
---|
2558 | (void)printf("Bad ICMP type: %d", icp->icmp6_type); |
---|
2559 | } |
---|
2560 | } |
---|
2561 | |
---|
2562 | /* |
---|
2563 | * pr_iph -- |
---|
2564 | * Print an IP6 header. |
---|
2565 | */ |
---|
2566 | static void |
---|
2567 | pr_iph(struct ip6_hdr *ip6) |
---|
2568 | { |
---|
2569 | u_int32_t flow = ip6->ip6_flow & IPV6_FLOWLABEL_MASK; |
---|
2570 | u_int8_t tc; |
---|
2571 | char ntop_buf[INET6_ADDRSTRLEN]; |
---|
2572 | |
---|
2573 | tc = *(&ip6->ip6_vfc + 1); /* XXX */ |
---|
2574 | tc = (tc >> 4) & 0x0f; |
---|
2575 | tc |= (ip6->ip6_vfc << 4); |
---|
2576 | |
---|
2577 | printf("Vr TC Flow Plen Nxt Hlim\n"); |
---|
2578 | printf(" %1x %02x %05x %04x %02x %02x\n", |
---|
2579 | (ip6->ip6_vfc & IPV6_VERSION_MASK) >> 4, tc, (u_int32_t)ntohl(flow), |
---|
2580 | ntohs(ip6->ip6_plen), ip6->ip6_nxt, ip6->ip6_hlim); |
---|
2581 | if (!inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf, sizeof(ntop_buf))) |
---|
2582 | strlcpy(ntop_buf, "?", sizeof(ntop_buf)); |
---|
2583 | printf("%s->", ntop_buf); |
---|
2584 | if (!inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf, sizeof(ntop_buf))) |
---|
2585 | strlcpy(ntop_buf, "?", sizeof(ntop_buf)); |
---|
2586 | printf("%s\n", ntop_buf); |
---|
2587 | } |
---|
2588 | |
---|
2589 | /* |
---|
2590 | * pr_addr -- |
---|
2591 | * Return an ascii host address as a dotted quad and optionally with |
---|
2592 | * a hostname. |
---|
2593 | */ |
---|
2594 | static const char * |
---|
2595 | pr_addr(struct sockaddr *addr, int addrlen) |
---|
2596 | { |
---|
2597 | static char buf[NI_MAXHOST]; |
---|
2598 | int flag = 0; |
---|
2599 | |
---|
2600 | if ((options & F_HOSTNAME) == 0) |
---|
2601 | flag |= NI_NUMERICHOST; |
---|
2602 | |
---|
2603 | if (getnameinfo(addr, addrlen, buf, sizeof(buf), NULL, 0, flag) == 0) |
---|
2604 | return (buf); |
---|
2605 | else |
---|
2606 | return "?"; |
---|
2607 | } |
---|
2608 | |
---|
2609 | /* |
---|
2610 | * pr_retip -- |
---|
2611 | * Dump some info on a returned (via ICMPv6) IPv6 packet. |
---|
2612 | */ |
---|
2613 | static void |
---|
2614 | pr_retip(struct ip6_hdr *ip6, u_char *end) |
---|
2615 | { |
---|
2616 | u_char *cp = (u_char *)ip6, nh; |
---|
2617 | int hlen; |
---|
2618 | |
---|
2619 | if ((size_t)(end - (u_char *)ip6) < sizeof(*ip6)) { |
---|
2620 | printf("IP6"); |
---|
2621 | goto trunc; |
---|
2622 | } |
---|
2623 | pr_iph(ip6); |
---|
2624 | hlen = sizeof(*ip6); |
---|
2625 | |
---|
2626 | nh = ip6->ip6_nxt; |
---|
2627 | cp += hlen; |
---|
2628 | while (end - cp >= 8) { |
---|
2629 | switch (nh) { |
---|
2630 | case IPPROTO_HOPOPTS: |
---|
2631 | printf("HBH "); |
---|
2632 | hlen = (((struct ip6_hbh *)cp)->ip6h_len+1) << 3; |
---|
2633 | nh = ((struct ip6_hbh *)cp)->ip6h_nxt; |
---|
2634 | break; |
---|
2635 | case IPPROTO_DSTOPTS: |
---|
2636 | printf("DSTOPT "); |
---|
2637 | hlen = (((struct ip6_dest *)cp)->ip6d_len+1) << 3; |
---|
2638 | nh = ((struct ip6_dest *)cp)->ip6d_nxt; |
---|
2639 | break; |
---|
2640 | case IPPROTO_FRAGMENT: |
---|
2641 | printf("FRAG "); |
---|
2642 | hlen = sizeof(struct ip6_frag); |
---|
2643 | nh = ((struct ip6_frag *)cp)->ip6f_nxt; |
---|
2644 | break; |
---|
2645 | case IPPROTO_ROUTING: |
---|
2646 | printf("RTHDR "); |
---|
2647 | hlen = (((struct ip6_rthdr *)cp)->ip6r_len+1) << 3; |
---|
2648 | nh = ((struct ip6_rthdr *)cp)->ip6r_nxt; |
---|
2649 | break; |
---|
2650 | #ifdef IPSEC |
---|
2651 | case IPPROTO_AH: |
---|
2652 | printf("AH "); |
---|
2653 | hlen = (((struct ah *)cp)->ah_len+2) << 2; |
---|
2654 | nh = ((struct ah *)cp)->ah_nxt; |
---|
2655 | break; |
---|
2656 | #endif |
---|
2657 | case IPPROTO_ICMPV6: |
---|
2658 | printf("ICMP6: type = %d, code = %d\n", |
---|
2659 | *cp, *(cp + 1)); |
---|
2660 | return; |
---|
2661 | case IPPROTO_ESP: |
---|
2662 | printf("ESP\n"); |
---|
2663 | return; |
---|
2664 | case IPPROTO_TCP: |
---|
2665 | printf("TCP: from port %u, to port %u (decimal)\n", |
---|
2666 | (*cp * 256 + *(cp + 1)), |
---|
2667 | (*(cp + 2) * 256 + *(cp + 3))); |
---|
2668 | return; |
---|
2669 | case IPPROTO_UDP: |
---|
2670 | printf("UDP: from port %u, to port %u (decimal)\n", |
---|
2671 | (*cp * 256 + *(cp + 1)), |
---|
2672 | (*(cp + 2) * 256 + *(cp + 3))); |
---|
2673 | return; |
---|
2674 | default: |
---|
2675 | printf("Unknown Header(%d)\n", nh); |
---|
2676 | return; |
---|
2677 | } |
---|
2678 | |
---|
2679 | if ((cp += hlen) >= end) |
---|
2680 | goto trunc; |
---|
2681 | } |
---|
2682 | if (end - cp < 8) |
---|
2683 | goto trunc; |
---|
2684 | |
---|
2685 | putchar('\n'); |
---|
2686 | return; |
---|
2687 | |
---|
2688 | trunc: |
---|
2689 | printf("...\n"); |
---|
2690 | return; |
---|
2691 | } |
---|
2692 | |
---|
2693 | static void |
---|
2694 | fill(char *bp, char *patp) |
---|
2695 | { |
---|
2696 | int ii, jj, kk; |
---|
2697 | int pat[16]; |
---|
2698 | char *cp; |
---|
2699 | |
---|
2700 | for (cp = patp; *cp; cp++) |
---|
2701 | #ifndef __rtems__ |
---|
2702 | if (!isxdigit(*cp)) |
---|
2703 | #else /* __rtems__ */ |
---|
2704 | if (!isxdigit((unsigned char)*cp)) |
---|
2705 | #endif /* __rtems__ */ |
---|
2706 | errx(1, "patterns must be specified as hex digits"); |
---|
2707 | ii = sscanf(patp, |
---|
2708 | "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x", |
---|
2709 | &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6], |
---|
2710 | &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12], |
---|
2711 | &pat[13], &pat[14], &pat[15]); |
---|
2712 | |
---|
2713 | /* xxx */ |
---|
2714 | if (ii > 0) |
---|
2715 | for (kk = 0; |
---|
2716 | (size_t)kk <= MAXDATALEN - 8 + sizeof(struct tv32) + ii; |
---|
2717 | kk += ii) |
---|
2718 | for (jj = 0; jj < ii; ++jj) |
---|
2719 | bp[jj + kk] = pat[jj]; |
---|
2720 | if (!(options & F_QUIET)) { |
---|
2721 | (void)printf("PATTERN: 0x"); |
---|
2722 | for (jj = 0; jj < ii; ++jj) |
---|
2723 | (void)printf("%02x", bp[jj] & 0xFF); |
---|
2724 | (void)printf("\n"); |
---|
2725 | } |
---|
2726 | } |
---|
2727 | |
---|
2728 | #ifdef IPSEC |
---|
2729 | #ifdef IPSEC_POLICY_IPSEC |
---|
2730 | static int |
---|
2731 | setpolicy(int so __unused, char *policy) |
---|
2732 | { |
---|
2733 | char *buf; |
---|
2734 | |
---|
2735 | if (policy == NULL) |
---|
2736 | return 0; /* ignore */ |
---|
2737 | |
---|
2738 | buf = ipsec_set_policy(policy, strlen(policy)); |
---|
2739 | if (buf == NULL) |
---|
2740 | errx(1, "%s", ipsec_strerror()); |
---|
2741 | if (setsockopt(s, IPPROTO_IPV6, IPV6_IPSEC_POLICY, buf, |
---|
2742 | ipsec_get_policylen(buf)) < 0) |
---|
2743 | warnx("Unable to set IPsec policy"); |
---|
2744 | free(buf); |
---|
2745 | |
---|
2746 | return 0; |
---|
2747 | } |
---|
2748 | #endif |
---|
2749 | #endif |
---|
2750 | |
---|
2751 | static char * |
---|
2752 | nigroup(char *name, int nig_oldmcprefix) |
---|
2753 | { |
---|
2754 | char *p; |
---|
2755 | char *q; |
---|
2756 | MD5_CTX ctxt; |
---|
2757 | u_int8_t digest[16]; |
---|
2758 | u_int8_t c; |
---|
2759 | size_t l; |
---|
2760 | char hbuf[NI_MAXHOST]; |
---|
2761 | struct in6_addr in6; |
---|
2762 | int valid; |
---|
2763 | |
---|
2764 | p = strchr(name, '.'); |
---|
2765 | if (!p) |
---|
2766 | p = name + strlen(name); |
---|
2767 | l = p - name; |
---|
2768 | if (l > 63 || l > sizeof(hbuf) - 1) |
---|
2769 | return NULL; /*label too long*/ |
---|
2770 | strncpy(hbuf, name, l); |
---|
2771 | hbuf[(int)l] = '\0'; |
---|
2772 | |
---|
2773 | for (q = name; *q; q++) { |
---|
2774 | if (isupper(*(unsigned char *)q)) |
---|
2775 | *q = tolower(*(unsigned char *)q); |
---|
2776 | } |
---|
2777 | |
---|
2778 | /* generate 16 bytes of pseudo-random value. */ |
---|
2779 | memset(&ctxt, 0, sizeof(ctxt)); |
---|
2780 | MD5Init(&ctxt); |
---|
2781 | c = l & 0xff; |
---|
2782 | MD5Update(&ctxt, &c, sizeof(c)); |
---|
2783 | MD5Update(&ctxt, (unsigned char *)name, l); |
---|
2784 | MD5Final(digest, &ctxt); |
---|
2785 | |
---|
2786 | if (nig_oldmcprefix) { |
---|
2787 | /* draft-ietf-ipngwg-icmp-name-lookup */ |
---|
2788 | valid = inet_pton(AF_INET6, "ff02::2:0000:0000", &in6); |
---|
2789 | } else { |
---|
2790 | /* RFC 4620 */ |
---|
2791 | valid = inet_pton(AF_INET6, "ff02::2:ff00:0000", &in6); |
---|
2792 | } |
---|
2793 | if (valid != 1) |
---|
2794 | return NULL; /*XXX*/ |
---|
2795 | |
---|
2796 | if (nig_oldmcprefix) { |
---|
2797 | /* draft-ietf-ipngwg-icmp-name-lookup */ |
---|
2798 | bcopy(digest, &in6.s6_addr[12], 4); |
---|
2799 | } else { |
---|
2800 | /* RFC 4620 */ |
---|
2801 | bcopy(digest, &in6.s6_addr[13], 3); |
---|
2802 | } |
---|
2803 | |
---|
2804 | if (inet_ntop(AF_INET6, &in6, hbuf, sizeof(hbuf)) == NULL) |
---|
2805 | return NULL; |
---|
2806 | |
---|
2807 | return strdup(hbuf); |
---|
2808 | } |
---|
2809 | |
---|
2810 | static void |
---|
2811 | usage(void) |
---|
2812 | { |
---|
2813 | (void)fprintf(stderr, |
---|
2814 | #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC) |
---|
2815 | "A" |
---|
2816 | #endif |
---|
2817 | "usage: ping6 [-" |
---|
2818 | "Dd" |
---|
2819 | #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC) |
---|
2820 | "E" |
---|
2821 | #endif |
---|
2822 | "fH" |
---|
2823 | #ifdef IPV6_USE_MIN_MTU |
---|
2824 | "m" |
---|
2825 | #endif |
---|
2826 | "nNoqrRtvwW] " |
---|
2827 | "[-a addrtype] [-b bufsiz] [-c count] [-g gateway]\n" |
---|
2828 | " [-h hoplimit] [-I interface] [-i wait] [-l preload]" |
---|
2829 | #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) |
---|
2830 | " [-P policy]" |
---|
2831 | #endif |
---|
2832 | "\n" |
---|
2833 | " [-p pattern] [-S sourceaddr] [-s packetsize] " |
---|
2834 | "[-x waittime]\n" |
---|
2835 | " [-X timeout] [hops ...] host\n"); |
---|
2836 | exit(1); |
---|
2837 | } |
---|