Annotation of embedaddon/dhcp/tests/DHCPv6/293-decline.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_DECLINE);
! 60:
! 61: # add the Client Identifier (required by DOCSIS and RFC 3315)
! 62: my $client_id = "\x00\x01\x00\x01\x0c\x00\xa1\x41\x00\x06\x5b\x50\x99\xf6";
! 63: $msg->add_option($OPT_CLIENTID, $client_id);
! 64: #$msg->add_option($OPT_CLIENTID, dhcp_client::duid(3));
! 65:
! 66: # add the Server identifier (required by RFC 3315)
! 67: $msg->add_option($OPT_SERVERID, "InfiniteEntropy");
! 68:
! 69: # add Elapsed Time, set to 0 on first packet (required by RFC 3315)
! 70: $msg->add_option($OPT_ELAPSED_TIME, "\x00\x00");
! 71:
! 72: # add IA_NA for each interface (required by DOCSIS and RFC 3315)
! 73: # XXX: should this be a single interface only?
! 74: my $iaid = 0;
! 75: foreach my $iface (dhcp_client::iface()) {
! 76: my $iaaddr_option = inet_pton(AF_INET6, "3ffe:aaaa:aaaa:aaaa::ffff");
! 77: $iaaddr_option .= pack("NN", 0, 0);
! 78: my $option_data = pack("NNN", ++$iaid, 0, 0);
! 79: $option_data .= pack("nn", $OPT_IAADDR, length($iaaddr_option)-8);
! 80: $option_data .= $iaaddr_option;
! 81: $msg->add_option($OPT_IA_NA, $option_data);
! 82: }
! 83:
! 84: # timeout parameters, from DOCSIS
! 85: my $IRT = $SOL_TIMEOUT;
! 86: my $MRT = $SOL_MAX_RT;
! 87: my $MRC = 4; # DOCSIS says 4, RFC 3315 says it SHOULD be 0
! 88: my $MRD = 0;
! 89:
! 90: # sleep a random amount of time between 0 and 1 second, required by RFC 3315
! 91: # XXX: this seems pretty stupid
! 92: sleep(rand($SOL_MAX_DELAY));
! 93:
! 94: my $RT;
! 95: my $count = 0;
! 96: my $mrd_end_time;
! 97: if ($MRD != 0) {
! 98: $mrd_end_time = time() + $MRD;
! 99: }
! 100: my $reply_msg;
! 101: do {
! 102: # create our socket, and send our Solicit
! 103: socket(SOCK, PF_INET6, SOCK_DGRAM, getprotobyname('udp')) || die;
! 104: my $addr = inet_pton(AF_INET6, $All_DHCP_Servers);
! 105: my $packet = $msg->packet();
! 106: my $send_ret = send(SOCK, $packet, 0,
! 107: pack_sockaddr_in6($server_port, $addr));
! 108: if (not defined($send_ret)) {
! 109: printf STDERR
! 110: "Error \%d sending DHCPv6 Solicit message;\n\%s\n",
! 111: 0+$ERRNO, $ERRNO;
! 112: exit(1);
! 113: } elsif ($send_ret != length($packet)) {
! 114: print STDERR "Unable to send entire DHCPv6 Solicit message.\n";
! 115: exit(1);
! 116: }
! 117: $count++;
! 118:
! 119: my $RAND = rand(0.2) - 0.1;
! 120: if (defined $RT) {
! 121: $RT = 2*$RT + $RAND*$RT;
! 122: if (($RT > $MRT) && ($MRT != 0)) {
! 123: $RT = $MRT + $RAND*$RT;
! 124: }
! 125: } else {
! 126: $RT = $IRT + $RAND*$IRT;
! 127: }
! 128:
! 129: my $rt_end_time = time() + $RT;
! 130: if (defined($mrd_end_time) && ($mrd_end_time > $rt_end_time)) {
! 131: $rt_end_time = $mrd_end_time;
! 132: }
! 133:
! 134: for (;;) {
! 135: my $timeout = $rt_end_time - time();
! 136: if ($timeout < 0) {
! 137: # print STDERR "Timeout waiting for DHCPv6 Advertise ",
! 138: # "or Reply message.\n";
! 139: last;
! 140: }
! 141:
! 142: my @ready = IO::Select->new(\*SOCK)->can_read($timeout);
! 143:
! 144: if (@ready) {
! 145: my $reply;
! 146: my $recv_ret;
! 147:
! 148: $recv_ret = recv(SOCK, $reply, 1500, 0);
! 149: if (not defined $recv_ret) {
! 150: printf STDERR
! 151: "Error \%d receiving DHCPv6 " .
! 152: "message;\n\%s\n",
! 153: 0+$ERRNO, $ERRNO;
! 154: exit(1);
! 155: }
! 156:
! 157: $reply_msg = dhcp_client::msg::decode($reply, 1);
! 158: if (($reply_msg->{msg_type} == $MSG_ADVERTISE) ||
! 159: ($reply_msg->{msg_type} == $MSG_REPLY)) {
! 160: last;
! 161: }
! 162: }
! 163: }
! 164:
! 165: } until ($reply_msg ||
! 166: (($MRC != 0) && ($count > $MRC)) ||
! 167: (defined($mrd_end_time) && ($mrd_end_time > time())));
! 168:
! 169: unless ($reply_msg) {
! 170: if (($MRC != 0) && ($count >= $MRC)) {
! 171: print STDERR
! 172: "No reply after maximum retransmission count.\n";
! 173: } else {
! 174: print STDERR
! 175: "No reply after maximum retransmission duration.\n";
! 176: }
! 177: }
! 178:
! 179: if ($reply_msg && ($reply_msg->{msg_type} == $MSG_REPLY)) {
! 180: print "Got DHCPv6 Reply message.\n";
! 181: exit(0);
! 182: }
! 183:
! 184: #$Data::Dumper::Useqq = 1;
! 185: #print Dumper($msg), "\n";
! 186: #print Dumper($msg->packet()), "\n";
! 187: #
! 188: #print "packet length: ", length($msg->packet()), "\n";
! 189:
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