Annotation of embedaddon/dhcp/tests/DHCPv6/112-badduid.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: # 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_INFORMATION_REQUEST);
60:
61: # add the Client Identifier (required by DOCSIS and RFC 3315)
62: $msg->add_option($OPT_CLIENTID, dhcp_client::duid());
63:
64: # add the Server Identifier (required by DOCSIS and RFC 3315)
65: # but use *our* DUID
66: $msg->add_option($OPT_SERVERID, dhcp_client::duid());
67:
68: # add Elapsed Time, set to 0 on first packet (required by RFC 3315)
69: $msg->add_option($OPT_ELAPSED_TIME, "\x00\x00");
70:
71: # add Reconfigure Accept (required by DOCSIS)
72: $msg->add_option($OPT_RECONF_ACCEPT, "");
73:
74: # add Options Request (required by DOCSIS, recommended by RFC 3315)
75: my @oro = ( $OPT_TIME_SERVERS, $OPT_TIME_OFFSET );
76: $msg->add_option($OPT_ORO, pack("n*", @oro));
77:
78:
79: # add Vendor Class option (required by DOCSIS)
80: $msg->add_option($OPT_VENDOR_CLASS, pack("N", 4491) . "docsis3.0");
81:
82: # add Vendor-specific Information Option option (required by DOCSIS)
83: my $vsio = pack("N", 4491);
84:
85: # ORO (required by DOCSIS)
86: my @docsis_oro = ( $DOCSIS_OPT_TFTP_SERVERS );
87: $vsio .= pack("nnC*", $DOCSIS_OPT_ORO, 0+@docsis_oro, @docsis_oro);
88:
89: # TLV5 data: CMTS DOCSIS version number 3.0 (required by DOCSIS)
90: my $tlv5_data = "\x01\x02\x03\x0";
91: $vsio .= pack("nn", $DOCSIS_OPT_TLV5, length($tlv5_data)) . $tlv5_data;
92:
93: # DOCSIS Device (required by DOCSIS)
94: my $docsis_device_id = dhcp_client::mac_addr_binary();
95: $vsio .= pack("nn", $DOCSIS_OPT_DEVICE_ID, length($docsis_device_id));
96: $vsio .= $docsis_device_id;
97:
98: $msg->add_option($OPT_VENDOR_OPTS, $vsio);
99:
100: # add Rapid Commit option (required by DOCSIS)
101: $msg->add_option($OPT_RAPID_COMMIT, "");
102:
103: # timeout parameters, from DOCSIS
104: my $IRT = $SOL_TIMEOUT;
105: my $MRT = $SOL_MAX_RT;
106: my $MRC = 1; # DOCSIS says 4, RFC 3315 says it SHOULD be 0
107: my $MRD = 0;
108:
109: # sleep a random amount of time between 0 and 1 second, required by RFC 3315
110: # XXX: this seems pretty stupid
111: sleep(rand($SOL_MAX_DELAY));
112:
113: my $RT;
114: my $count = 0;
115: my $mrd_end_time;
116: if ($MRD != 0) {
117: $mrd_end_time = time() + $MRD;
118: }
119: my $reply_msg;
120: do {
121: # create our socket, and send our Solicit
122: socket(SOCK, PF_INET6, SOCK_DGRAM, getprotobyname('udp')) || die;
123: my $addr = inet_pton(AF_INET6, $All_DHCP_Servers);
124: my $packet = $msg->packet();
125: my $send_ret = send(SOCK, $packet, 0,
126: pack_sockaddr_in6($server_port, $addr));
127: if (not defined($send_ret)) {
128: printf STDERR
129: "Error \%d sending DHCPv6 Solicit message;\n\%s\n",
130: 0+$ERRNO, $ERRNO;
131: exit(1);
132: } elsif ($send_ret != length($packet)) {
133: print STDERR "Unable to send entire DHCPv6 Solicit message.\n";
134: exit(1);
135: }
136: $count++;
137:
138: my $RAND = rand(0.2) - 0.1;
139: if (defined $RT) {
140: $RT = 2*$RT + $RAND*$RT;
141: if (($RT > $MRT) && ($MRT != 0)) {
142: $RT = $MRT + $RAND*$RT;
143: }
144: } else {
145: $RT = $IRT + $RAND*$IRT;
146: }
147:
148: my $rt_end_time = time() + $RT;
149: if (defined($mrd_end_time) && ($mrd_end_time > $rt_end_time)) {
150: $rt_end_time = $mrd_end_time;
151: }
152:
153: for (;;) {
154: my $timeout = $rt_end_time - time();
155: if ($timeout < 0) {
156: # print STDERR "Timeout waiting for DHCPv6 Advertise ",
157: # "or Reply message.\n";
158: last;
159: }
160:
161: my @ready = IO::Select->new(\*SOCK)->can_read($timeout);
162:
163: if (@ready) {
164: my $reply;
165: my $recv_ret;
166:
167: $recv_ret = recv(SOCK, $reply, 1500, 0);
168: if (not defined $recv_ret) {
169: printf STDERR
170: "Error \%d receiving DHCPv6 " .
171: "message;\n\%s\n",
172: 0+$ERRNO, $ERRNO;
173: exit(1);
174: }
175:
176: $reply_msg = dhcp_client::msg::decode($reply);
177: if (($reply_msg->{msg_type} == $MSG_ADVERTISE) ||
178: ($reply_msg->{msg_type} == $MSG_REPLY)) {
179: last;
180: }
181: }
182: }
183:
184: } until ($reply_msg ||
185: (($MRC != 0) && ($count > $MRC)) ||
186: (defined($mrd_end_time) && ($mrd_end_time > time())));
187:
188: unless ($reply_msg) {
189: if (($MRC != 0) && ($count >= $MRC)) {
190: print STDERR
191: "No reply after maximum retransmission count.\n";
192: } else {
193: print STDERR
194: "No reply after maximum retransmission duration.\n";
195: }
196: }
197:
198: if ($reply_msg && ($reply_msg->{msg_type} == $MSG_REPLY)) {
199: print "Got DHCPv6 Reply message.\n";
200: exit(0);
201: }
202:
203: #$Data::Dumper::Useqq = 1;
204: #print Dumper($msg), "\n";
205: #print Dumper($msg->packet()), "\n";
206: #
207: #print "packet length: ", length($msg->packet()), "\n";
208:
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