/[mdap]/mdap-server.pl
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /mdap-server.pl

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Revision 26 - (show annotations)
Mon Apr 23 23:36:57 2007 UTC (16 years, 11 months ago) by dpavlin
File MIME type: text/plain
File size: 5866 byte(s)
check unknowns every 10 * 3s
1 #!/usr/bin/perl
2
3 use strict;
4 use IO::Socket::Multicast;
5 use Data::Dump qw/dump/;
6 use Getopt::Long;
7
8 my $GROUP = '224.0.0.103';
9 my $PORT = '3235';
10
11 my $debug = 0;
12 my $quiet = 1;
13 my $verbose = 0;
14
15 my $resend_search_delay = 3;
16 my $tftp_path = '/srv/tftp/';
17
18 GetOptions(
19 "port=i" => \$PORT,
20 "group=s" => \$GROUP,
21 "debug!" => \$debug,
22 "quiet!" => \$quiet,
23 "verbose!" => \$verbose,
24 "search=i" => \$resend_search_delay,
25 "tftp=s" => \$tftp_path,
26 );
27
28 $quiet = 0 if $verbose;
29
30 # tab-delimited list of user id/passwd to try on ants
31 my @try_accounts = ( "Administrator\t" );
32
33 my $passwd_path = $0;
34 $passwd_path =~ s/[^\/]+$/passwd/;
35
36 if (-e $passwd_path) {
37 open(my $fh, $passwd_path) || die "can't open $passwd_path: $!";
38 while(<$fh>) {
39 chomp;
40 next if /^#/ || /^$/ || /^\s+$/;
41 if (/^\S+\t\S+$/) {
42 push @try_accounts, $_;
43 } else {
44 warn "invalid $passwd_path entry: $_\n";
45 }
46 }
47 print "found ", $#try_accounts + 1, " accounts to try on password protected ants\n";
48 }
49
50 warn "search for ants every ${resend_search_delay}s\ntftp server path: $tftp_path\n";
51
52 sub fw {
53 my ($board, $offset,$len) = @_;
54 open(my $fh, "$tftp_path/$board") || die "Can't open image $tftp_path/$board: $!";
55 my $b;
56 seek($fh, $offset, 0) || die "can't seek to $offset: $!";
57 read($fh, $b, $len) || die "can't read $len bytes from $offset: $!";
58 close($fh);
59 return $b;
60 }
61
62 sub fw_build {
63 my $board_name = shift || return 0;
64 my $v = join('.', unpack('CCCC',fw($board_name,0x20,4)) );
65 print "# fw_build $board_name $v\n" unless $quiet;
66 return $v;
67 }
68
69 sub fw_exists {
70 my $board = shift;
71 return -e "$tftp_path/$board";
72 }
73
74 my $sock = IO::Socket::Multicast->new(LocalPort=>$PORT,ReuseAddr=>1);
75 $sock->mcast_add($GROUP) || die "Couldn't set group: $!\n";
76 $sock->mcast_ttl(1);
77
78 sub ant2hash {
79 my $data = shift;
80 my $hash;
81 map {
82 if ( m/:/ ) {
83 my ($n,$v) = split(/:/,$_,2);
84 $hash->{$n} = $v;
85 }
86 } split(/[\n\r]/, $data);
87 return $hash;
88 }
89
90 sub mdap_send {
91 my $data = shift;
92
93 my $xor = 0;
94 map { $xor ^= ord($_) } split(//,$data);
95 $data .= sprintf('%02X', $xor);
96
97 $sock->mcast_send( $data, "${GROUP}:${PORT}" );
98 if ($debug) {
99 warn ">> ", dump( $data ), $/;
100 } elsif( ! $quiet ) {
101 $data =~ s/\s+/ /gi;
102 warn ">> ", substr($data,0,70), $/;
103 }
104 }
105
106 my $ant_passwd;
107
108 sub ant_credentials {
109 my $ant = shift || die "no ant?";
110 my $i = $ant_passwd->{$ant} || 0;
111 my ($user_id,$user_pwd) = split(/\t/, $try_accounts[$i]);
112 #warn "ant $ant as [$i] $user_id / $user_pwd\n";
113 return ($user_id,$user_pwd);
114 }
115
116 my $ant_unknown_password;
117 my $ant_ok_password;
118
119 sub ant_unknown_password {
120 my $ant = shift || die "no ant?";
121 if ( $ant_unknown_password->{$ant} ) {
122 $ant_unknown_password->{$ant}--;
123 }
124 return $ant_unknown_password->{$ant};
125 }
126
127 sub ant_another_passwd {
128 my $ant = shift || die "no ant?";
129
130 return 0 if ant_unknown_password( $ant );
131
132 $ant_passwd->{$ant}++;
133
134 if ( $ant_passwd->{$ant} > $#try_accounts ) {
135 print "$ant ant with unknown password\n";
136 $ant_unknown_password->{$ant} = 10;
137 $ant_passwd->{$ant} = 0;
138 return 0;
139 }
140 return 1;
141 }
142
143 my $once;
144
145 sub once {
146 my $m = join('', @_);
147 $once->{$m}++;
148 print $m if ($once->{$m} == 1);
149 }
150
151 local $SIG{ALRM} = sub {
152 mdap_send("ANT-SEARCH MDAP/1.1\r\n");
153 alarm( $resend_search_delay );
154 };
155
156 alarm( $resend_search_delay );
157
158 mdap_send("ANT-SEARCH MDAP/1.1\r\n");
159
160 while (1) {
161 my $data;
162 next unless $sock->recv($data,1024);
163
164 if ( $data =~ m#^(INFO|ANT-SEARCH|EXEC-CLI|REPLY-\S+)\s(MDAP)/(\d+\.\d+)# ) {
165
166 my ($type,$proto,$mdap_ver) = ($1,$2,$3);
167
168 my $h = ant2hash($data);
169
170 my $client_version = $h->{'MDAP-VERSION'};
171 $mdap_ver = $client_version if ($client_version);
172
173 print "<< $type $proto/$mdap_ver << ", length($data), " bytes\n" unless $quiet;
174
175 warn dump($h),$/ if ($debug);
176
177 # we are getting our own messages (since our source port
178 # is same as destination)
179 next if ( $type =~ m#^(INFO|ANT-SEARCH|EXEC-CLI)# );
180
181 my $ant = $h->{'ANT-ID'} || die "no ANT-ID in ", dump( $h );
182 my $seq_nr = $h->{'SEQ-NR'};
183 #warn "SEQ-NR: $seq_nr ok: ",$ant_ok_password->{$ant},"\n" if ($seq_nr);
184
185 my ($user_id,$user_pwd) = ant_credentials( $ant );
186
187 if ($type eq 'REPLY-ANT-SEARCH') {
188 mdap_send("INFO MDAP/$mdap_ver\r\nSEQ-NR:1\r\nTO-ANT:$ant\r\nUSER-ID:$user_id\r\nUSER-PWD:$user_pwd\r\n") unless ant_unknown_password( $ant );
189 } elsif ($type eq 'REPLY-INFO') {
190
191 if ( $seq_nr < 0 ) {
192 if ( $ant_ok_password ) {
193 $ant_ok_password->{$ant} = 0;
194 } elsif ( ant_another_passwd( $ant ) ) {
195 ($user_id,$user_pwd) = ant_credentials( $ant );
196 mdap_send("INFO MDAP/$mdap_ver\r\nSEQ-NR:1\r\nTO-ANT:$ant\r\nUSER-ID:$user_id\r\nUSER-PWD:$user_pwd\r\n");
197 }
198 next;
199 } else {
200 $ant_ok_password->{$ant}++;
201 }
202
203 my $board = $h->{'_BOARD_NAME'} || die "no _BOARD_NAME?";
204 if ( fw_exists( $board ) ) {
205 my $build = $h->{'_BUILD'} || die "no _BUILD?";
206 my $new_build = fw_build( $board );
207 if ( $build ne $new_build ) {
208 print "+ $ant version $build -> $new_build\n";
209 mdap_send("EXEC-CLI MDAP/$mdap_ver\r\nCLI-CMD:software upgrade\r\nSEQ-NR:1\r\nTO-ANT:$ant\r\nUSER-ID:$user_id\r\nUSER-PWD:$user_pwd\r\n");
210 } else {
211 once "$ant OK version $build",
212 $ant_unknown_password->{$ant} ? ' with unknown password' :
213 $ant_ok_password->{$ant} ? ' password protected' :
214 '',
215 "\n";
216 }
217 } else {
218 once "!! NO FIRMWARE for $board in $tftp_path for ant $ant, skipping update\n";
219 }
220 } elsif ( $type eq 'REPLY-EXEC-CLI' && $h->{'SEQ-NR'} == 1 ) {
221 print "+ $ant bootp mode re-flash started\n";
222 mdap_send("EXEC-CLI MDAP/$mdap_ver\r\nSEQ-NR:2\r\nTO-ANT:$ant\r\nUSER-ID:$user_id\r\nUSER-PWD:$user_pwd\r\n");
223 $ant_unknown_password->{$ant} = 0;
224 $ant_passwd->{$ant} = 0;
225 $ant_ok_password->{$ant} = 0;
226 } else {
227 print "!! reply ignored ", dump( $h ), $/;
228 }
229
230 } else {
231 warn "<=" x 15, "\n", $data, "\n", "<=" x 15, "\n";
232 }
233 }

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