8 |
use Carp qw/confess/; |
use Carp qw/confess/; |
9 |
use Getopt::Long; |
use Getopt::Long; |
10 |
use File::Slurp; |
use File::Slurp; |
11 |
|
use JSON; |
12 |
|
use POSIX qw(strftime); |
13 |
|
|
14 |
use IO::Socket::INET; |
use IO::Socket::INET; |
15 |
|
|
16 |
my $meteor_server = '192.168.1.13:4671'; |
my $debug = 0; |
17 |
|
|
18 |
|
my $tags_data; |
19 |
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my $tags_security; |
20 |
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my $visible_tags; |
21 |
|
|
22 |
|
my $meteor_server; # = '192.168.1.13:4671'; |
23 |
my $meteor_fh; |
my $meteor_fh; |
24 |
|
|
25 |
sub meteor { |
sub meteor { |
46 |
} |
} |
47 |
} |
} |
48 |
|
|
49 |
my $debug = 0; |
my $listen_port = 9000; # pick something not in use |
50 |
|
my $server_url = "http://localhost:$listen_port"; |
51 |
|
|
52 |
|
sub http_server { |
53 |
|
|
54 |
|
my $server = IO::Socket::INET->new( |
55 |
|
Proto => 'tcp', |
56 |
|
LocalPort => $listen_port, |
57 |
|
Listen => SOMAXCONN, |
58 |
|
Reuse => 1 |
59 |
|
); |
60 |
|
|
61 |
|
die "can't setup server" unless $server; |
62 |
|
|
63 |
|
print "Server $0 ready at $server_url\n"; |
64 |
|
|
65 |
|
sub static { |
66 |
|
my ($client,$path) = @_; |
67 |
|
|
68 |
|
$path = "www/$path"; |
69 |
|
$path .= 'rfid.html' if $path =~ m{/$}; |
70 |
|
|
71 |
|
return unless -e $path; |
72 |
|
|
73 |
|
my $type = 'text/plain'; |
74 |
|
$type = 'text/html' if $path =~ m{\.htm}; |
75 |
|
$type = 'application/javascript' if $path =~ m{\.js}; |
76 |
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|
77 |
|
print $client "HTTP/1.0 200 OK\r\nContent-Type: $type\r\n\r\n"; |
78 |
|
open(my $html, $path); |
79 |
|
while(<$html>) { |
80 |
|
print $client $_; |
81 |
|
} |
82 |
|
close($html); |
83 |
|
|
84 |
|
return $path; |
85 |
|
} |
86 |
|
|
87 |
|
while (my $client = $server->accept()) { |
88 |
|
$client->autoflush(1); |
89 |
|
my $request = <$client>; |
90 |
|
|
91 |
|
warn "WEB << $request\n" if $debug; |
92 |
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|
93 |
|
if ($request =~ m{^GET (/.*) HTTP/1.[01]}) { |
94 |
|
my $method = $1; |
95 |
|
my $param; |
96 |
|
if ( $method =~ s{\?(.+)}{} ) { |
97 |
|
foreach my $p ( split(/[&;]/, $1) ) { |
98 |
|
my ($n,$v) = split(/=/, $p, 2); |
99 |
|
$param->{$n} = $v; |
100 |
|
} |
101 |
|
warn "WEB << param: ",dump( $param ) if $debug; |
102 |
|
} |
103 |
|
if ( my $path = static( $client,$1 ) ) { |
104 |
|
warn "WEB >> $path" if $debug; |
105 |
|
} elsif ( $method =~ m{/scan} ) { |
106 |
|
my $tags = scan_for_tags(); |
107 |
|
my $json = { time => time() }; |
108 |
|
map { |
109 |
|
my $d = decode_tag($_); |
110 |
|
$d->{sid} = $_; |
111 |
|
$d->{security} = $tags_security->{$_}; |
112 |
|
push @{ $json->{tags} }, $d; |
113 |
|
} keys %$tags; |
114 |
|
print $client "HTTP/1.0 200 OK\r\nContent-Type: application/x-javascript\r\n\r\n", |
115 |
|
$param->{callback}, "(", to_json($json), ")\r\n"; |
116 |
|
} elsif ( $method =~ m{/program} ) { |
117 |
|
|
118 |
|
my $status = 501; # Not implementd |
119 |
|
|
120 |
|
foreach my $p ( keys %$param ) { |
121 |
|
next unless $p =~ m/^tag_(\S+)/; |
122 |
|
my $tag = $1; |
123 |
|
my $content = "\x04\x11\x00\x01" . $param->{$p}; |
124 |
|
$content = "\x00" if $param->{$p} eq 'blank'; |
125 |
|
$status = 302; |
126 |
|
|
127 |
|
warn "PROGRAM $tag $content\n"; |
128 |
|
write_tag( $tag, $content ); |
129 |
|
} |
130 |
|
|
131 |
|
print $client "HTTP/1.0 $status $method\r\nLocation: $server_url\r\n\r\n"; |
132 |
|
|
133 |
|
} else { |
134 |
|
print $client "HTTP/1.0 404 Unkown method\r\n"; |
135 |
|
} |
136 |
|
} else { |
137 |
|
print $client "HTTP/1.0 500 No method\r\n"; |
138 |
|
} |
139 |
|
close $client; |
140 |
|
} |
141 |
|
|
142 |
|
die "server died"; |
143 |
|
} |
144 |
|
|
145 |
|
|
146 |
|
my $last_message = {}; |
147 |
|
sub _message { |
148 |
|
my $type = shift @_; |
149 |
|
my $text = join(' ',@_); |
150 |
|
my $last = $last_message->{$type}; |
151 |
|
if ( $text ne $last ) { |
152 |
|
warn $type eq 'diag' ? '# ' : '', $text, "\n"; |
153 |
|
$last_message->{$type} = $text; |
154 |
|
} |
155 |
|
} |
156 |
|
|
157 |
|
sub _log { _message('log',@_) }; |
158 |
|
sub diag { _message('diag',@_) }; |
159 |
|
|
160 |
my $device = "/dev/ttyUSB0"; |
my $device = "/dev/ttyUSB0"; |
161 |
my $baudrate = "19200"; |
my $baudrate = "19200"; |
167 |
my $program_path = './program/'; |
my $program_path = './program/'; |
168 |
my $secure_path = './secure/'; |
my $secure_path = './secure/'; |
169 |
|
|
170 |
|
# http server |
171 |
|
my $http_server = 1; |
172 |
|
|
173 |
|
# 3M defaults: 8,4 |
174 |
|
my $max_rfid_block = 16; |
175 |
|
my $read_blocks = 8; |
176 |
|
|
177 |
my $response = { |
my $response = { |
178 |
'd500090400110a0500027250' => 'version?', |
'd500090400110a0500027250' => 'version?', |
179 |
'd60007fe00000500c97b' => 'no tag in range', |
'd60007fe00000500c97b' => 'no tag in range', |
195 |
'stopbits=i' => \$stopbits, |
'stopbits=i' => \$stopbits, |
196 |
'handshake=s' => \$handshake, |
'handshake=s' => \$handshake, |
197 |
'meteor=s' => \$meteor_server, |
'meteor=s' => \$meteor_server, |
198 |
|
'http-server!' => \$http_server, |
199 |
) or die $!; |
) or die $!; |
200 |
|
|
201 |
my $verbose = $debug > 0 ? $debug-- : 0; |
my $verbose = $debug > 0 ? $debug-- : 0; |
231 |
|
|
232 |
=cut |
=cut |
233 |
|
|
|
my $tags_data; |
|
|
my $visible_tags; |
|
|
|
|
234 |
my $item_type = { |
my $item_type = { |
235 |
1 => 'Book', |
1 => 'Book', |
236 |
6 => 'CD/CD ROM', |
6 => 'CD/CD ROM', |
256 |
$parity=$port->parity($parity); |
$parity=$port->parity($parity); |
257 |
$stopbits=$port->stopbits($stopbits); |
$stopbits=$port->stopbits($stopbits); |
258 |
|
|
259 |
print "## using $device $baudrate $databits $parity $stopbits debug: $debug verbose: $verbose\n"; |
warn "## using $device $baudrate $databits $parity $stopbits debug: $debug verbose: $verbose\n"; |
260 |
|
|
261 |
# Just in case: reset our timing and buffers |
# Just in case: reset our timing and buffers |
262 |
$port->lookclear(); |
$port->lookclear(); |
279 |
cmd( 'D6 00 0C 13 04 01 00 02 00 03 00 04 00 AAF2','FIXME: stats?', |
cmd( 'D6 00 0C 13 04 01 00 02 00 03 00 04 00 AAF2','FIXME: stats?', |
280 |
'D6 00 0C 13 00 02 01 01 03 02 02 03 00 E778', sub { assert() } ); |
'D6 00 0C 13 00 02 01 01 03 02 02 03 00 E778', sub { assert() } ); |
281 |
|
|
282 |
# start scanning for tags |
sub scan_for_tags { |
283 |
|
|
284 |
cmd( 'D6 00 05 FE 00 05 FA40', "scan for tags, retry $_", |
my @tags; |
|
'D6 00 0F FE 00 00 05 ', sub { # 01 E00401003123AA26 941A # seen, serial length: 8 |
|
|
my $rest = shift || die "no rest?"; |
|
|
my $nr = ord( substr( $rest, 0, 1 ) ); |
|
|
|
|
|
if ( ! $nr ) { |
|
|
print "no tags in range\n"; |
|
|
update_visible_tags(); |
|
|
meteor( 'info-none-in-range' ); |
|
|
$tags_data = {}; |
|
|
} else { |
|
285 |
|
|
286 |
my $tags = substr( $rest, 1 ); |
cmd( 'D6 00 05 FE 00 05 FA40', "scan for tags", |
287 |
|
'D6 00 0F FE 00 00 05 ', sub { # 01 E00401003123AA26 941A # seen, serial length: 8 |
288 |
|
my $rest = shift || die "no rest?"; |
289 |
|
my $nr = ord( substr( $rest, 0, 1 ) ); |
290 |
|
|
291 |
|
if ( ! $nr ) { |
292 |
|
_log "no tags in range\n"; |
293 |
|
update_visible_tags(); |
294 |
|
meteor( 'info-none-in-range' ); |
295 |
|
$tags_data = {}; |
296 |
|
} else { |
297 |
|
|
298 |
my $tl = length( $tags ); |
my $tags = substr( $rest, 1 ); |
299 |
die "wrong length $tl for $nr tags: ",dump( $tags ) if $tl =! $nr * 8; |
my $tl = length( $tags ); |
300 |
|
die "wrong length $tl for $nr tags: ",dump( $tags ) if $tl =! $nr * 8; |
301 |
|
|
302 |
my @tags; |
push @tags, uc(unpack('H16', substr($tags, $_ * 8, 8))) foreach ( 0 .. $nr - 1 ); |
303 |
push @tags, uc(unpack('H16', substr($tags, $_ * 8, 8))) foreach ( 0 .. $nr - 1 ); |
warn "## tags ",as_hex($tags), " [$tl] = ",dump( $tags ) if $debug; |
304 |
warn "## tags ",as_hex($tags), " [$tl] = ",dump( $tags ) if $debug; |
_log "$nr tags in range: ", join(',', @tags ) , "\n"; |
|
print "$nr tags in range: ", join(',', @tags ) , "\n"; |
|
305 |
|
|
306 |
meteor( 'info-in-range', join(' ',@tags)); |
meteor( 'info-in-range', join(' ',@tags)); |
307 |
|
|
308 |
update_visible_tags( @tags ); |
update_visible_tags( @tags ); |
309 |
|
} |
310 |
} |
} |
311 |
} |
); |
312 |
) while(1); |
|
313 |
#) foreach ( 1 .. 100 ); |
diag "tags: ",dump( @tags ); |
314 |
|
return $tags_data; |
315 |
|
|
316 |
|
} |
317 |
|
|
318 |
|
# start scanning for tags |
319 |
|
|
320 |
|
if ( $http_server ) { |
321 |
|
http_server; |
322 |
|
} else { |
323 |
|
while (1) { |
324 |
|
scan_for_tags; |
325 |
|
sleep 1; |
326 |
|
} |
327 |
|
} |
328 |
|
|
329 |
|
die "over and out"; |
330 |
|
|
331 |
sub update_visible_tags { |
sub update_visible_tags { |
332 |
my @tags = @_; |
my @tags = @_; |
335 |
$visible_tags = {}; |
$visible_tags = {}; |
336 |
|
|
337 |
foreach my $tag ( @tags ) { |
foreach my $tag ( @tags ) { |
338 |
|
$visible_tags->{$tag}++; |
339 |
if ( ! defined $last_visible_tags->{$tag} ) { |
if ( ! defined $last_visible_tags->{$tag} ) { |
340 |
if ( defined $tags_data->{$tag} ) { |
if ( defined $tags_data->{$tag} ) { |
341 |
# meteor( 'in-range', $tag ); |
# meteor( 'in-range', $tag ); |
343 |
meteor( 'read', $tag ); |
meteor( 'read', $tag ); |
344 |
read_tag( $tag ); |
read_tag( $tag ); |
345 |
} |
} |
|
$visible_tags->{$tag}++; |
|
346 |
} else { |
} else { |
347 |
warn "## using cached data for $tag" if $debug; |
warn "## using cached data for $tag" if $debug; |
348 |
} |
} |
372 |
sub read_tag_data { |
sub read_tag_data { |
373 |
my ($start_block,$rest) = @_; |
my ($start_block,$rest) = @_; |
374 |
die "no rest?" unless $rest; |
die "no rest?" unless $rest; |
375 |
|
|
376 |
|
my $last_block = 0; |
377 |
|
|
378 |
warn "## DATA [$start_block] ", dump( $rest ) if $debug; |
warn "## DATA [$start_block] ", dump( $rest ) if $debug; |
379 |
my $tag = uc(unpack('H16',substr( $rest, 0, 8 ))); |
my $tag = uc(unpack('H16',substr( $rest, 0, 8 ))); |
380 |
my $blocks = ord(substr($rest,8,1)); |
my $blocks = ord(substr($rest,8,1)); |
384 |
warn "## block ",as_hex( $block ) if $debug; |
warn "## block ",as_hex( $block ) if $debug; |
385 |
my $ord = unpack('v',substr( $block, 0, 2 )); |
my $ord = unpack('v',substr( $block, 0, 2 )); |
386 |
my $expected_ord = $nr + $start_block; |
my $expected_ord = $nr + $start_block; |
387 |
die "got block $ord, expected block $expected_ord from ",dump( $block ) if $ord != $expected_ord; |
warn "got block $ord, expected block $expected_ord from ",dump( $block ) if $ord != $expected_ord; |
388 |
my $data = substr( $block, 2 ); |
my $data = substr( $block, 2 ); |
389 |
die "data payload should be 4 bytes" if length($data) != 4; |
die "data payload should be 4 bytes" if length($data) != 4; |
390 |
warn sprintf "## tag %9s %02d %s |%-4s|\n", $tag, $ord, as_hex( $data ), $data; |
warn sprintf "## tag %9s %02d: %s |%-4s|\n", $tag, $ord, as_hex( $data ), $data; |
391 |
$tag_data_block->{$tag}->[ $ord ] = $data; |
$tag_data_block->{$tag}->[ $ord ] = $data; |
392 |
|
$last_block = $ord; |
393 |
} |
} |
394 |
$tags_data->{ $tag } = join('', @{ $tag_data_block->{$tag} }); |
$tags_data->{ $tag } = join('', @{ $tag_data_block->{$tag} }); |
395 |
|
|
396 |
my $item_type_nr = ord(substr( $tags_data->{$tag}, 3, 1 )); |
my $item_type_nr = ord(substr( $tags_data->{$tag}, 3, 1 )); |
397 |
print "DATA $tag ",dump( $tags_data ), " item type: ", ( $item_type->{ $item_type_nr } || "UNKWOWN '$item_type_nr' in " . dump( $item_type ) ), "\n"; |
print "DATA $tag ",dump( $tags_data ), " item type: ", ( $item_type->{ $item_type_nr } || "UNKWOWN '$item_type_nr'" ), "\n"; |
398 |
|
|
399 |
|
return $last_block + 1; |
400 |
|
} |
401 |
|
|
402 |
|
my $saved_in_log; |
403 |
|
|
404 |
|
sub decode_tag { |
405 |
|
my $tag = shift; |
406 |
|
|
407 |
|
my $data = $tags_data->{$tag} || die "no data for $tag"; |
408 |
|
|
409 |
|
my ( $u1, $set_item, $u2, $type, $content, $br_lib, $custom ) = unpack('C4Z16Nl>',$data); |
410 |
|
my $hash = { |
411 |
|
u1 => $u1, |
412 |
|
u2 => $u2, |
413 |
|
set => ( $set_item & 0xf0 ) >> 4, |
414 |
|
total => ( $set_item & 0x0f ), |
415 |
|
|
416 |
|
type => $type, |
417 |
|
content => $content, |
418 |
|
|
419 |
|
branch => $br_lib >> 20, |
420 |
|
library => $br_lib & 0x000fffff, |
421 |
|
|
422 |
|
custom => $custom, |
423 |
|
}; |
424 |
|
|
425 |
|
if ( ! $saved_in_log->{$tag}++ ) { |
426 |
|
open(my $log, '>>', 'rfid-log.txt'); |
427 |
|
print $log strftime( "%Y-%m-%d %H:%M:%S", localtime ), ",$tag,$content\n"; |
428 |
|
close($log); |
429 |
|
} |
430 |
|
|
431 |
|
return $hash; |
432 |
} |
} |
433 |
|
|
434 |
sub read_tag { |
sub read_tag { |
438 |
|
|
439 |
print "read_tag $tag\n"; |
print "read_tag $tag\n"; |
440 |
|
|
441 |
cmd( |
my $start_block = 0; |
|
"D6 00 0D 02 $tag 00 03 1CC4", "read $tag offset: 0 blocks: 3", |
|
|
"D6 00 0F FE 00 00 05 01 $tag 941A", sub { |
|
|
print "FIXME: tag $tag ready?\n"; |
|
|
}, |
|
|
"D6 00 1F 02 00", sub { # $tag 03 00 00 04 11 00 01 01 00 31 32 33 34 02 00 35 36 37 38 531F\n"; |
|
|
read_tag_data( 0, @_ ); |
|
|
}, |
|
|
); |
|
442 |
|
|
443 |
cmd( |
while ( $start_block < $max_rfid_block ) { |
444 |
"D6 00 0D 02 $tag 03 04 3970", "read $tag offset: 3 blocks: 4", |
|
445 |
"D6 00 25 02 00", sub { # $tag 04 03 00 30 30 00 00 04 00 00 00 00 00 |
cmd( |
446 |
read_tag_data( 3, @_ ); |
sprintf( "D6 00 0D 02 $tag %02x %02x ffff", $start_block, $read_blocks ), |
447 |
} |
"read $tag offset: $start_block blocks: $read_blocks", |
448 |
); |
"D6 00 1F 02 00", sub { # $tag 03 00 00 04 11 00 01 01 00 31 32 33 34 02 00 35 36 37 38 531F\n"; |
449 |
|
$start_block = read_tag_data( $start_block, @_ ); |
450 |
|
warn "# read tag upto $start_block\n"; |
451 |
|
}, |
452 |
|
"D6 00 0F FE 00 00 05 01 $tag 941A", sub { |
453 |
|
print "FIXME: tag $tag ready? (expected block read instead)\n"; |
454 |
|
}, |
455 |
|
); |
456 |
|
|
457 |
|
} |
458 |
|
|
459 |
my $security; |
my $security; |
460 |
|
|
466 |
( $from_tag, $security ) = ( substr($rest,0,8), substr($rest,8,1) ); |
( $from_tag, $security ) = ( substr($rest,0,8), substr($rest,8,1) ); |
467 |
die "security from other tag: ",as_hex( $from_tag ) if $from_tag ne str2bytes( $tag ); |
die "security from other tag: ",as_hex( $from_tag ) if $from_tag ne str2bytes( $tag ); |
468 |
$security = as_hex( $security ); |
$security = as_hex( $security ); |
469 |
|
$tags_security->{$tag} = $security; |
470 |
warn "# SECURITY $tag = $security\n"; |
warn "# SECURITY $tag = $security\n"; |
471 |
} |
} |
472 |
); |
); |
473 |
|
|
474 |
my $data = $tags_data->{$tag} || die "no data for $tag"; |
print "TAG $tag ", dump(decode_tag( $tag )); |
|
my ( $u1, $set_item, $u2, $type, $content, $br_lib, $custom ) = unpack('C4Z16Nl>',$data); |
|
|
my $set = ( $set_item & 0xf0 ) >> 4; |
|
|
my $total = ( $set_item & 0x0f ); |
|
|
my $branch = $br_lib >> 20; |
|
|
my $library = $br_lib & 0x000fffff; |
|
|
print "TAG $tag [$u1] set: $set/$total [$u2] type: $type '$content' branch: $branch library: $library custom: $custom security: $security\n"; |
|
|
|
|
475 |
} |
} |
476 |
|
|
477 |
sub write_tag { |
sub write_tag { |
478 |
my ($tag) = @_; |
my ($tag,$data) = @_; |
479 |
|
|
480 |
my $path = "$program_path/$tag"; |
my $path = "$program_path/$tag"; |
481 |
|
$data = read_file( $path ) if -e $path; |
482 |
|
|
483 |
my $data = read_file( $path ); |
die "no data" unless $data; |
484 |
|
|
485 |
$data = substr($data,0,16); |
my $hex_data; |
486 |
|
|
487 |
my $hex_data = unpack('h*', $data) . ' 00' x ( 16 - length($data) ); |
if ( $data =~ s{^hex\s+}{} ) { |
488 |
|
$hex_data = $data; |
489 |
|
$hex_data =~ s{\s+}{}g; |
490 |
|
} else { |
491 |
|
|
492 |
|
$data .= "\0" x ( 4 - ( length($data) % 4 ) ); |
493 |
|
|
494 |
print "write_tag $tag = $data ",dump( $hex_data ); |
my $max_len = $max_rfid_block * 4; |
495 |
|
|
496 |
|
if ( length($data) > $max_len ) { |
497 |
|
$data = substr($data,0,$max_len); |
498 |
|
warn "strip content to $max_len bytes\n"; |
499 |
|
} |
500 |
|
|
501 |
|
$hex_data = unpack('H*', $data); |
502 |
|
} |
503 |
|
|
504 |
|
my $len = length($hex_data) / 2; |
505 |
|
# pad to block size |
506 |
|
$hex_data .= '00' x ( 4 - $len % 4 ); |
507 |
|
my $blocks = sprintf('%02x', length($hex_data) / 4); |
508 |
|
|
509 |
|
print "write_tag $tag = ",dump( $data ), " [$len/$blocks] == $hex_data\n"; |
510 |
|
|
511 |
cmd( |
cmd( |
512 |
"d6 00 26 04 $tag 00 06 00 04 11 00 01 $hex_data 00 00 00 00 fd3b", "write $tag", |
"d6 00 ff 04 $tag 00 $blocks 00 $hex_data ffff", "write $tag", |
513 |
"d6 00 0d 04 00 $tag 06 afb1", sub { assert() }, |
"d6 00 0d 04 00 $tag $blocks afb1", sub { assert() }, |
514 |
) foreach ( 1 .. 3 ); # xxx 3m software does this three times! |
); # foreach ( 1 .. 3 ); # XXX 3m software does this three times! |
515 |
|
|
516 |
my $to = $path; |
my $to = $path; |
517 |
$to .= '.' . time(); |
$to .= '.' . time(); |
519 |
rename $path, $to; |
rename $path, $to; |
520 |
print ">> $to\n"; |
print ">> $to\n"; |
521 |
|
|
522 |
delete $tags_data->{$tag}; # force re-read of tag |
# force re-read of tag |
523 |
|
delete $tags_data->{$tag}; |
524 |
|
delete $visible_tags->{$tag}; |
525 |
} |
} |
526 |
|
|
527 |
sub secure_tag { |
sub secure_tag { |
574 |
{ |
{ |
575 |
my $str=shift; |
my $str=shift; |
576 |
my $count = $port->write($str); |
my $count = $port->write($str); |
577 |
|
my $len = length($str); |
578 |
|
die "wrong write length $count != $len in ",as_hex( $str ) if $count != $len; |
579 |
print "#> ", as_hex( $str ), "\t[$count]\n" if $debug; |
print "#> ", as_hex( $str ), "\t[$count]\n" if $debug; |
580 |
} |
} |
581 |
|
|
642 |
sub checksum { |
sub checksum { |
643 |
my ( $bytes, $checksum ) = @_; |
my ( $bytes, $checksum ) = @_; |
644 |
|
|
|
my $xor = crcccitt( substr($bytes,1) ); # skip D6 |
|
|
warn "## checksum ",dump( $bytes, $xor, $checksum ) if $debug; |
|
|
|
|
645 |
my $len = ord(substr($bytes,2,1)); |
my $len = ord(substr($bytes,2,1)); |
646 |
my $len_real = length($bytes) - 1; |
my $len_real = length($bytes) - 1; |
647 |
|
|
648 |
if ( $len_real != $len ) { |
if ( $len_real != $len ) { |
649 |
print "length wrong: $len_real != $len\n"; |
print "length wrong: $len_real != $len\n"; |
650 |
$bytes = substr($bytes,0,2) . chr($len_real) . substr($bytes,4); |
$bytes = substr($bytes,0,2) . chr($len_real) . substr($bytes,3); |
651 |
} |
} |
652 |
|
|
653 |
|
my $xor = crcccitt( substr($bytes,1) ); # skip D6 |
654 |
|
warn "## checksum ",dump( $bytes, $xor, $checksum ) if $debug; |
655 |
|
|
656 |
if ( defined $checksum && $xor ne $checksum ) { |
if ( defined $checksum && $xor ne $checksum ) { |
657 |
print "checksum doesn't match: ", as_hex($xor), " != ", as_hex($checksum), " data: ", as_hex($bytes), "\n"; |
print "checksum doesn't match: ", as_hex($xor), " != ", as_hex($checksum), " data: ", as_hex($bytes), "\n"; |
658 |
return $bytes . $xor; |
return $bytes . $xor; |
663 |
our $dispatch; |
our $dispatch; |
664 |
|
|
665 |
sub readchunk { |
sub readchunk { |
666 |
sleep 1; # FIXME remove |
# sleep 1; # FIXME remove |
667 |
|
|
668 |
# read header of packet |
# read header of packet |
669 |
my $header = read_bytes( 2, 'header' ); |
my $header = read_bytes( 2, 'header' ); |
692 |
warn "?? payload dispatch to ",dump( $payload, $dispatch, $to ) if $debug; |
warn "?? payload dispatch to ",dump( $payload, $dispatch, $to ) if $debug; |
693 |
|
|
694 |
if ( defined $to ) { |
if ( defined $to ) { |
695 |
my $rest = substr( $payload, length($to) ); |
my $rest = substr( $payload, length($to) ) if length($to) < length($payload); |
696 |
warn "## DISPATCH payload to with rest", dump( $payload, $to, $rest ) if $debug; |
warn "## DISPATCH payload to with rest", dump( $payload, $to, $rest ) if $debug; |
697 |
$dispatch->{ $to }->( $rest ); |
$dispatch->{ $to }->( $rest ); |
698 |
} else { |
} else { |
699 |
print "NO DISPATCH for ",dump( $full ),"\n"; |
print "NO DISPATCH for ",as_hex( $full ),"\n"; |
700 |
} |
} |
701 |
|
|
702 |
return $data; |
return $data; |