Annotation of embedaddon/dhcp/tests/DHCPv6/020-advertise-mcast.pl, revision 1.1.1.1
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: # well-known addresses
33: my $All_DHCP_Relay_Agents_and_Servers = "ff02::1:2";
34: my $All_DHCP_Servers = "ff05::1:3";
35:
36: # ports
37: my $client_port = 546;
38: my $server_port = 547;
39:
40: # create a new Solicit message
41: my $msg = dhcp_client::msg->new($MSG_ADVERTISE);
42:
43: # add the Client Identifier (required by DOCSIS and RFC 3315)
44: $msg->add_option($OPT_CLIENTID, dhcp_client::duid());
45:
46: # add Elapsed Time, set to 0 on first packet (required by RFC 3315)
47: $msg->add_option($OPT_ELAPSED_TIME, "\x00\x00");
48:
49: # add IA_NA for each interface (required by DOCSIS and RFC 3315)
50: # XXX: should this be a single interface only?
51: my $iaid = 0;
52: foreach my $iface (dhcp_client::iface()) {
53: my $option_data = pack("NNN", ++$iaid, 0, 0);
54: $msg->add_option($OPT_IA_NA, $option_data);
55: }
56:
57: # add Options Request (required by DOCSIS, recommended by RFC 3315)
58: my @oro = ( );
59: $msg->add_option($OPT_ORO, pack("n*", @oro));
60:
61: # timeout parameters
62: my $IRT = $SOL_TIMEOUT;
63: my $MRT = $SOL_MAX_RT;
64: my $MRC = 1; # DOCSIS says 4, RFC 3315 says it SHOULD be 0
65: my $MRD = 0;
66:
67: # sleep a random amount of time between 0 and 1 second, required by RFC 3315
68: # XXX: this seems pretty stupid
69: sleep(rand($SOL_MAX_DELAY));
70:
71: my $RT;
72: my $count = 0;
73: my $mrd_end_time;
74: if ($MRD != 0) {
75: $mrd_end_time = time() + $MRD;
76: }
77: my $reply_msg;
78: do {
79: # create our socket, and send our bogus packet
80: socket(SOCK, PF_INET6, SOCK_DGRAM, getprotobyname('udp')) || die;
81: my $addr = inet_pton(AF_INET6, $All_DHCP_Servers);
82: my $packet = $msg->packet();
83: my $send_ret = send(SOCK, $packet, 0,
84: pack_sockaddr_in6($server_port, $addr));
85: if (not defined($send_ret)) {
86: printf STDERR
87: "Error \%d sending DHCPv6 message;\n\%s\n",
88: 0+$ERRNO, $ERRNO;
89: exit(1);
90: } elsif ($send_ret != length($packet)) {
91: print STDERR "Unable to send entire DHCPv6 message.\n";
92: exit(1);
93: }
94: $count++;
95:
96: my $RAND = rand(0.2) - 0.1;
97: if (defined $RT) {
98: $RT = 2*$RT + $RAND*$RT;
99: if (($RT > $MRT) && ($MRT != 0)) {
100: $RT = $MRT + $RAND*$RT;
101: }
102: } else {
103: $RT = $IRT + $RAND*$IRT;
104: }
105:
106: my $rt_end_time = time() + $RT;
107: if (defined($mrd_end_time) && ($mrd_end_time > $rt_end_time)) {
108: $rt_end_time = $mrd_end_time;
109: }
110:
111: for (;;) {
112: my $timeout = $rt_end_time - time();
113: if ($timeout < 0) {
114: last;
115: }
116:
117: my @ready = IO::Select->new(\*SOCK)->can_read($timeout);
118:
119: if (@ready) {
120: my $reply;
121: my $recv_ret;
122:
123: $recv_ret = recv(SOCK, $reply, 1500, 0);
124: if (not defined $recv_ret) {
125: printf STDERR
126: "Error \%d receiving DHCPv6 " .
127: "message;\n\%s\n",
128: 0+$ERRNO, $ERRNO;
129: exit(1);
130: }
131:
132: $reply_msg = dhcp_client::msg::decode($reply);
133: if (($reply_msg->{msg_type} == $MSG_ADVERTISE) ||
134: ($reply_msg->{msg_type} == $MSG_REPLY)) {
135: last;
136: }
137: }
138: }
139:
140: } until ($reply_msg ||
141: (($MRC != 0) && ($count > $MRC)) ||
142: (defined($mrd_end_time) && ($mrd_end_time > time())));
143:
144: unless ($reply_msg) {
145: if (($MRC != 0) && ($count >= $MRC)) {
146: print STDERR
147: "No reply after maximum retransmission count.\n";
148: } else {
149: print STDERR
150: "No reply after maximum retransmission duration.\n";
151: }
152: }
153:
154: if ($reply_msg && ($reply_msg->{msg_type} == $MSG_REPLY)) {
155: print "Got DHCPv6 Reply message.\n";
156: exit(0);
157: }
158:
159: #$Data::Dumper::Useqq = 1;
160: #print Dumper($msg), "\n";
161: #print Dumper($msg->packet()), "\n";
162: #
163: #print "packet length: ", length($msg->packet()), "\n";
164:
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