Annotation of embedaddon/dhcp/tests/DHCPv6/210-solicit-nohost.pl, revision 1.1
1.1 ! misho 1: #! /usr/bin/perl -w
! 2:
! 3: # Copyright (c) 2007,2009 by Internet Systems Consortium, Inc. ("ISC")
! 4: #
! 5: # Permission to use, copy, modify, and distribute this software for any
! 6: # purpose with or without fee is hereby granted, provided that the above
! 7: # copyright notice and this permission notice appear in all copies.
! 8: #
! 9: # THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
! 10: # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 11: # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
! 12: # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 13: # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 14: # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
! 15: # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 16: #
! 17: # Internet Systems Consortium, Inc.
! 18: # 950 Charter Street
! 19: # Redwood City, CA 94063
! 20: # <info@isc.org>
! 21: # https://www.isc.org/
! 22:
! 23: use strict;
! 24: use English;
! 25: use Time::HiRes qw( sleep );
! 26: use Socket;
! 27: use Socket6;
! 28: use IO::Select;
! 29:
! 30: use dhcp_client;
! 31:
! 32: # XXX: for debugging
! 33: use Data::Dumper;
! 34:
! 35: # not-yet-standard options
! 36: my $OPT_TIME_SERVERS = 40;
! 37: my $OPT_TIME_OFFSET = 41;
! 38:
! 39: # DOCSIS sub-options
! 40: my $DOCSIS_OPT_ORO = 1;
! 41: # 2 to 31 are reserved
! 42: my $DOCSIS_OPT_TFTP_SERVERS = 32;
! 43: my $DOCSIS_OPT_CONFIG_FILE_NAME = 33;
! 44: my $DOCSIS_OPT_SYSLOG_SERVERS = 34;
! 45: my $DOCSIS_OPT_TLV5 = 35;
! 46: my $DOCSIS_OPT_DEVICE_ID = 36;
! 47: my $DOCSIS_OPT_CCC = 37;
! 48: my $DOCSIS_OPT_VERS = 38;
! 49:
! 50: # well-known addresses
! 51: my $All_DHCP_Relay_Agents_and_Servers = "ff02::1:2";
! 52: my $All_DHCP_Servers = "ff05::1:3";
! 53:
! 54: # ports
! 55: my $client_port = 546;
! 56: my $server_port = 547;
! 57:
! 58: # create a new Solicit message
! 59: my $msg = dhcp_client::msg->new($MSG_SOLICIT);
! 60:
! 61: # add the Client Identifier (required by DOCSIS and RFC 3315)
! 62: $msg->add_option($OPT_CLIENTID, dhcp_client::duid());
! 63:
! 64: # add Elapsed Time, set to 0 on first packet (required by RFC 3315)
! 65: $msg->add_option($OPT_ELAPSED_TIME, "\x00\x00");
! 66:
! 67: # add IA_NA for each interface (required by DOCSIS and RFC 3315)
! 68: # XXX: should this be a single interface only?
! 69: my $iaid = 0;
! 70: foreach my $iface (dhcp_client::iface()) {
! 71: my $option_data = pack("NNN", ++$iaid, 0, 0);
! 72: $msg->add_option($OPT_IA_NA, $option_data);
! 73: }
! 74:
! 75: # add Reconfigure Accept (required by DOCSIS)
! 76: $msg->add_option($OPT_RECONF_ACCEPT, "");
! 77:
! 78: # add Options Request (required by DOCSIS, recommended by RFC 3315)
! 79: my @oro = ( $OPT_TIME_SERVERS, $OPT_TIME_OFFSET );
! 80: $msg->add_option($OPT_ORO, pack("n*", @oro));
! 81:
! 82:
! 83: # add Vendor Class option (required by DOCSIS)
! 84: $msg->add_option($OPT_VENDOR_CLASS, pack("N", 4491) . "docsis3.0");
! 85:
! 86: # add Vendor-specific Information Option option (required by DOCSIS)
! 87: my $vsio = pack("N", 4491);
! 88:
! 89: # ORO (required by DOCSIS)
! 90: my @docsis_oro = ( $DOCSIS_OPT_TFTP_SERVERS );
! 91: $vsio .= pack("nnC*", $DOCSIS_OPT_ORO, 0+@docsis_oro, @docsis_oro);
! 92:
! 93: # TLV5 data: CMTS DOCSIS version number 3.0 (required by DOCSIS)
! 94: my $tlv5_data = "\x01\x02\x03\x0";
! 95: $vsio .= pack("nn", $DOCSIS_OPT_TLV5, length($tlv5_data)) . $tlv5_data;
! 96:
! 97: # DOCSIS Device (required by DOCSIS)
! 98: my $docsis_device_id = dhcp_client::mac_addr_binary();
! 99: $vsio .= pack("nn", $DOCSIS_OPT_DEVICE_ID, length($docsis_device_id));
! 100: $vsio .= $docsis_device_id;
! 101:
! 102: $msg->add_option($OPT_VENDOR_OPTS, $vsio);
! 103:
! 104: # add Rapid Commit option (required by DOCSIS)
! 105: $msg->add_option($OPT_RAPID_COMMIT, "");
! 106:
! 107: # timeout parameters, from DOCSIS
! 108: my $IRT = $SOL_TIMEOUT;
! 109: my $MRT = $SOL_MAX_RT;
! 110: my $MRC = 4; # DOCSIS says 4, RFC 3315 says it SHOULD be 0
! 111: my $MRD = 0;
! 112:
! 113: # sleep a random amount of time between 0 and 1 second, required by RFC 3315
! 114: # XXX: this seems pretty stupid
! 115: sleep(rand($SOL_MAX_DELAY));
! 116:
! 117: my $RT;
! 118: my $count = 0;
! 119: my $mrd_end_time;
! 120: if ($MRD != 0) {
! 121: $mrd_end_time = time() + $MRD;
! 122: }
! 123: my $reply_msg;
! 124: do {
! 125: # create our socket, and send our Solicit
! 126: socket(SOCK, PF_INET6, SOCK_DGRAM, getprotobyname('udp')) || die;
! 127: my $addr = inet_pton(AF_INET6, $All_DHCP_Servers);
! 128: my $packet = $msg->packet();
! 129: my $send_ret = send(SOCK, $packet, 0,
! 130: pack_sockaddr_in6($server_port, $addr));
! 131: if (not defined($send_ret)) {
! 132: printf STDERR
! 133: "Error \%d sending DHCPv6 Solicit message;\n\%s\n",
! 134: 0+$ERRNO, $ERRNO;
! 135: exit(1);
! 136: } elsif ($send_ret != length($packet)) {
! 137: print STDERR "Unable to send entire DHCPv6 Solicit message.\n";
! 138: exit(1);
! 139: }
! 140: $count++;
! 141:
! 142: my $RAND = rand(0.2) - 0.1;
! 143: if (defined $RT) {
! 144: $RT = 2*$RT + $RAND*$RT;
! 145: if (($RT > $MRT) && ($MRT != 0)) {
! 146: $RT = $MRT + $RAND*$RT;
! 147: }
! 148: } else {
! 149: $RT = $IRT + $RAND*$IRT;
! 150: }
! 151:
! 152: my $rt_end_time = time() + $RT;
! 153: if (defined($mrd_end_time) && ($mrd_end_time > $rt_end_time)) {
! 154: $rt_end_time = $mrd_end_time;
! 155: }
! 156:
! 157: for (;;) {
! 158: my $timeout = $rt_end_time - time();
! 159: if ($timeout < 0) {
! 160: # print STDERR "Timeout waiting for DHCPv6 Advertise ",
! 161: # "or Reply message.\n";
! 162: last;
! 163: }
! 164:
! 165: my @ready = IO::Select->new(\*SOCK)->can_read($timeout);
! 166:
! 167: if (@ready) {
! 168: my $reply;
! 169: my $recv_ret;
! 170:
! 171: $recv_ret = recv(SOCK, $reply, 1500, 0);
! 172: if (not defined $recv_ret) {
! 173: printf STDERR
! 174: "Error \%d receiving DHCPv6 " .
! 175: "message;\n\%s\n",
! 176: 0+$ERRNO, $ERRNO;
! 177: exit(1);
! 178: }
! 179:
! 180: $reply_msg = dhcp_client::msg::decode($reply, 1);
! 181: if (($reply_msg->{msg_type} == $MSG_ADVERTISE) ||
! 182: ($reply_msg->{msg_type} == $MSG_REPLY)) {
! 183: last;
! 184: }
! 185: }
! 186: }
! 187:
! 188: } until ($reply_msg ||
! 189: (($MRC != 0) && ($count > $MRC)) ||
! 190: (defined($mrd_end_time) && ($mrd_end_time > time())));
! 191:
! 192: unless ($reply_msg) {
! 193: if (($MRC != 0) && ($count >= $MRC)) {
! 194: print STDERR
! 195: "No reply after maximum retransmission count.\n";
! 196: } else {
! 197: print STDERR
! 198: "No reply after maximum retransmission duration.\n";
! 199: }
! 200: }
! 201:
! 202: if ($reply_msg && ($reply_msg->{msg_type} == $MSG_REPLY)) {
! 203: print "Got DHCPv6 Reply message.\n";
! 204: exit(0);
! 205: }
! 206:
! 207: #$Data::Dumper::Useqq = 1;
! 208: #print Dumper($msg), "\n";
! 209: #print Dumper($msg->packet()), "\n";
! 210: #
! 211: #print "packet length: ", length($msg->packet()), "\n";
! 212:
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