4 # remoteglot - Connects an abitrary UCI-speaking engine to ICS for easier post-game
5 # analysis, or for live analysis of relayed games. (Do not use for
6 # cheating! Cheating is bad for your karma, and your abuser flag.)
8 # Copyright 2007 Steinar H. Gunderson <steinar+remoteglot@gunderson.no>
9 # Licensed under the GNU General Public License, version 2.
15 use Chess::PGN::Parse;
25 require 'Position.pm';
33 my $latest_update = undef;
34 my $output_timer = undef;
35 my $http_timer = undef;
36 my $stop_pgn_fetch = 0;
37 my $tb_retry_timer = undef;
39 my $tb_lookup_running = 0;
40 my $last_written_json = undef;
42 # Persisted so we can restart.
43 # TODO: Figure out an appropriate way to deal with database restarts
44 # and/or Postgres going away entirely.
45 my $dbh = DBI->connect($remoteglotconf::dbistr, $remoteglotconf::dbiuser, $remoteglotconf::dbipass)
47 $dbh->{RaiseError} = 1;
51 open(FICSLOG, ">ficslog.txt")
52 or die "ficslog.txt: $!";
53 print FICSLOG "Log starting.\n";
57 open(UCILOG, ">ucilog.txt")
58 or die "ucilog.txt: $!";
59 print UCILOG "Log starting.\n";
63 open(TBLOG, ">tblog.txt")
64 or die "tblog.txt: $!";
65 print TBLOG "Log starting.\n";
72 # open the chess engine
73 my $engine = open_engine($remoteglotconf::engine_cmdline, 'E1', sub { handle_uci(@_, 1); });
74 my $engine2 = open_engine($remoteglotconf::engine2_cmdline, 'E2', sub { handle_uci(@_, 0); });
77 my ($pos_waiting, $pos_calculating, $pos_calculating_second_engine);
79 uciprint($engine, "setoption name UCI_AnalyseMode value true");
80 while (my ($key, $value) = each %remoteglotconf::engine_config) {
81 uciprint($engine, "setoption name $key value $value");
83 uciprint($engine, "ucinewgame");
85 if (defined($engine2)) {
86 uciprint($engine2, "setoption name UCI_AnalyseMode value true");
87 while (my ($key, $value) = each %remoteglotconf::engine2_config) {
88 uciprint($engine2, "setoption name $key value $value");
90 uciprint($engine2, "setoption name MultiPV value 500");
91 uciprint($engine2, "ucinewgame");
94 print "Chess engine ready.\n";
97 my $t = Net::Telnet->new(Timeout => 10, Prompt => '/fics% /');
98 $t->input_log(\*FICSLOG);
99 $t->open($remoteglotconf::server);
100 $t->print($remoteglotconf::nick);
101 $t->waitfor('/Press return to enter the server/');
105 $t->cmd("set shout 0");
106 $t->cmd("set seek 0");
107 $t->cmd("set style 12");
109 my $ev1 = AnyEvent->io(
112 cb => sub { # what callback to execute
114 my $line = $t->getline(Timeout => 0, errmode => 'return');
115 return if (!defined($line));
123 if (defined($remoteglotconf::target)) {
124 if ($remoteglotconf::target =~ /^http:/) {
125 fetch_pgn($remoteglotconf::target);
127 $t->cmd("observe $remoteglotconf::target");
130 print "FICS ready.\n";
132 # Engine events have already been set up by Engine.pm.
136 my ($engine, $line, $primary) = @_;
138 return if $line =~ /(upper|lower)bound/;
140 $line =~ s/ / /g; # Sometimes needed for Zappa Mexico
141 print UCILOG localtime() . " $engine->{'tag'} <= $line\n";
142 if ($line =~ /^info/) {
143 my (@infos) = split / /, $line;
146 parse_infos($engine, @infos);
148 if ($line =~ /^id/) {
149 my (@ids) = split / /, $line;
152 parse_ids($engine, @ids);
154 if ($line =~ /^bestmove/) {
156 return if (!$remoteglotconf::uci_assume_full_compliance);
157 if (defined($pos_waiting)) {
158 uciprint($engine, "position fen " . $pos_waiting->fen());
159 uciprint($engine, "go infinite");
161 $pos_calculating = $pos_waiting;
162 $pos_waiting = undef;
165 $engine2->{'info'} = {};
166 my $pos = $pos_waiting // $pos_calculating;
167 uciprint($engine2, "position fen " . $pos->fen());
168 uciprint($engine2, "go infinite");
169 $pos_calculating_second_engine = $pos;
175 my $getting_movelist = 0;
176 my $pos_for_movelist = undef;
177 my @uci_movelist = ();
178 my @pretty_movelist = ();
182 if ($line =~ /^<12> /) {
183 handle_position(Position->new($line));
186 if ($line =~ /^Movelist for game /) {
187 my $pos = $pos_waiting // $pos_calculating;
190 @pretty_movelist = ();
191 $pos_for_movelist = Position->start_pos($pos->{'player_w'}, $pos->{'player_b'});
192 $getting_movelist = 1;
195 if ($getting_movelist &&
196 $line =~ /^\s* \d+\. \s+ # move number
197 (\S+) \s+ \( [\d:.]+ \) \s* # first move, then time
198 (?: (\S+) \s+ \( [\d:.]+ \) )? # second move, then time
202 ($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($1);
203 push @uci_movelist, $uci_move;
204 push @pretty_movelist, $1;
207 ($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($2);
208 push @uci_movelist, $uci_move;
209 push @pretty_movelist, $2;
213 warn "Error when getting FICS move history: $@";
214 $getting_movelist = 0;
217 if ($getting_movelist &&
218 $line =~ /^\s+ \{.*\} \s+ (?: \* | 1\/2-1\/2 | 0-1 | 1-0 )/x) {
220 for my $pos ($pos_waiting, $pos_calculating) {
221 next if (!defined($pos));
222 if ($pos->fen() eq $pos_for_movelist->fen()) {
223 $pos->{'pretty_history'} = \@pretty_movelist;
226 $getting_movelist = 0;
228 if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
229 my ($who, $msg) = ($1, $2);
231 next if (grep { $_ eq $who } (@remoteglotconf::masters) == 0);
233 if ($msg =~ /^fics (.*?)$/) {
234 $t->cmd("tell $who Executing '$1' on FICS.");
236 } elsif ($msg =~ /^uci (.*?)$/) {
237 $t->cmd("tell $who Sending '$1' to the engine.");
238 print { $engine->{'write'} } "$1\n";
239 } elsif ($msg =~ /^pgn (.*?)$/) {
241 $t->cmd("tell $who Starting to poll '$url'.");
243 } elsif ($msg =~ /^stoppgn$/) {
244 $t->cmd("tell $who Stopping poll.");
247 } elsif ($msg =~ /^quit$/) {
248 $t->cmd("tell $who Bye bye.");
251 $t->cmd("tell $who Couldn't understand '$msg', sorry.");
254 #print "FICS: [$line]\n";
257 # Starts periodic fetching of PGNs from the given URL.
260 AnyEvent::HTTP::http_get($url, sub {
261 handle_pgn(@_, $url);
265 my ($last_pgn_white, $last_pgn_black);
266 my @last_pgn_uci_moves = ();
267 my $pgn_hysteresis_counter = 0;
270 my ($body, $header, $url) = @_;
272 if ($stop_pgn_fetch) {
278 my $pgn = Chess::PGN::Parse->new(undef, $body);
279 if (!defined($pgn)) {
280 warn "Error in parsing PGN from $url [body='$body']\n";
281 } elsif (!$pgn->read_game()) {
282 warn "Error in reading PGN game from $url [body='$body']\n";
283 } elsif ($body !~ /^\[/) {
284 warn "Malformed PGN from $url [body='$body']\n";
287 # Skip to the right game.
288 while (defined($remoteglotconf::pgn_filter) &&
289 !&$remoteglotconf::pgn_filter($pgn)) {
290 $pgn->read_game() or die "Out of games during filtering";
293 $pgn->parse_game({ save_comments => 'yes' });
294 my $white = $pgn->white;
295 my $black = $pgn->black;
296 $white =~ s/,.*//; # Remove first name.
297 $black =~ s/,.*//; # Remove first name.
298 my $pos = Position->start_pos($white, $black);
299 my $moves = $pgn->moves;
301 my @repretty_moves = ();
302 for my $move (@$moves) {
303 my ($npos, $uci_move) = $pos->make_pretty_move($move);
304 push @uci_moves, $uci_move;
306 # Re-prettyprint the move.
307 my ($from_row, $from_col, $to_row, $to_col, $promo) = parse_uci_move($uci_move);
308 my ($pretty, undef) = $pos->{'board'}->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
309 push @repretty_moves, $pretty;
312 if ($pgn->result eq '1-0' || $pgn->result eq '1/2-1/2' || $pgn->result eq '0-1') {
313 $pos->{'result'} = $pgn->result;
315 $pos->{'pretty_history'} = \@repretty_moves;
317 extract_clock($pgn, $pos);
319 # Sometimes, PGNs lose a move or two for a short while,
320 # or people push out new ones non-atomically.
321 # Thus, if we PGN doesn't change names but becomes
322 # shorter, we mistrust it for a few seconds.
324 if (defined($last_pgn_white) && defined($last_pgn_black) &&
325 $last_pgn_white eq $pgn->white &&
326 $last_pgn_black eq $pgn->black &&
327 scalar(@uci_moves) < scalar(@last_pgn_uci_moves)) {
328 if (++$pgn_hysteresis_counter < 3) {
333 $last_pgn_white = $pgn->white;
334 $last_pgn_black = $pgn->black;
335 @last_pgn_uci_moves = @uci_moves;
336 $pgn_hysteresis_counter = 0;
337 handle_position($pos);
341 warn "Error in parsing moves from $url: $@\n";
345 $http_timer = AnyEvent->timer(after => 1.0, cb => sub {
350 sub handle_position {
352 find_clock_start($pos, $pos_calculating);
354 # if this is already in the queue, ignore it (just update the result)
355 if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen()) {
356 $pos_waiting->{'result'} = $pos->{'result'};
360 # if we're already chewing on this and there's nothing else in the queue,
362 if (!defined($pos_waiting) && defined($pos_calculating) &&
363 $pos->fen() eq $pos_calculating->fen()) {
364 $pos_calculating->{'result'} = $pos->{'result'};
368 # if we're already thinking on something, stop and wait for the engine
370 if (defined($pos_calculating)) {
371 # Store the final data we have for this position in the history,
372 # with the precise clock information we just got from the new
373 # position. (Historic positions store the clock at the end of
376 # Do not output anything new to the main analysis; that's
377 # going to be obsolete really soon.
378 $pos_calculating->{'white_clock'} = $pos->{'white_clock'};
379 $pos_calculating->{'black_clock'} = $pos->{'black_clock'};
380 delete $pos_calculating->{'white_clock_target'};
381 delete $pos_calculating->{'black_clock_target'};
384 if (!defined($pos_waiting)) {
385 uciprint($engine, "stop");
387 if ($remoteglotconf::uci_assume_full_compliance) {
390 uciprint($engine, "position fen " . $pos->fen());
391 uciprint($engine, "go infinite");
392 $pos_calculating = $pos;
395 # it's wrong just to give the FEN (the move history is useful,
396 # and per the UCI spec, we should really have sent "ucinewgame"),
398 uciprint($engine, "position fen " . $pos->fen());
399 uciprint($engine, "go infinite");
400 $pos_calculating = $pos;
403 if (defined($engine2)) {
404 if (defined($pos_calculating_second_engine)) {
405 uciprint($engine2, "stop");
407 uciprint($engine2, "position fen " . $pos->fen());
408 uciprint($engine2, "go infinite");
409 $pos_calculating_second_engine = $pos;
411 $engine2->{'info'} = {};
414 $engine->{'info'} = {};
417 schedule_tb_lookup();
420 # Output a command every move to note that we're
421 # still paying attention -- this is a good tradeoff,
422 # since if no move has happened in the last half
423 # hour, the analysis/relay has most likely stopped
424 # and we should stop hogging server resources.
430 my ($engine, @x) = @_;
433 my $info = $engine->{'info'};
435 # Search for "multipv" first of all, since e.g. Stockfish doesn't put it first.
436 for my $i (0..$#x - 1) {
437 if ($x[$i] eq 'multipv') {
443 while (scalar @x > 0) {
444 if ($x[0] eq 'multipv') {
450 if ($x[0] eq 'currmove' || $x[0] eq 'currmovenumber' || $x[0] eq 'cpuload') {
452 my $value = shift @x;
453 $info->{$key} = $value;
456 if ($x[0] eq 'depth' || $x[0] eq 'seldepth' || $x[0] eq 'hashfull' ||
457 $x[0] eq 'time' || $x[0] eq 'nodes' || $x[0] eq 'nps' ||
460 my $value = shift @x;
461 $info->{$key . $mpv} = $value;
464 if ($x[0] eq 'score') {
467 delete $info->{'score_cp' . $mpv};
468 delete $info->{'score_mate' . $mpv};
470 while ($x[0] eq 'cp' || $x[0] eq 'mate') {
473 $info->{'score_cp' . $mpv} = shift @x;
474 } elsif ($x[0] eq 'mate') {
476 $info->{'score_mate' . $mpv} = shift @x;
484 $info->{'pv' . $mpv} = [ @x[1..$#x] ];
487 if ($x[0] eq 'string' || $x[0] eq 'UCI_AnalyseMode' || $x[0] eq 'setting' || $x[0] eq 'contempt') {
491 #print "unknown info '$x[0]', trying to recover...\n";
493 die "Unknown info '" . join(',', @x) . "'";
499 my ($engine, @x) = @_;
501 while (scalar @x > 0) {
502 if ($x[0] eq 'name') {
503 my $value = join(' ', @x);
504 $engine->{'id'}{'author'} = $value;
513 sub prettyprint_pv_no_cache {
514 my ($board, @pvs) = @_;
516 if (scalar @pvs == 0 || !defined($pvs[0])) {
521 my ($from_row, $from_col, $to_row, $to_col, $promo) = parse_uci_move($pv);
522 my ($pretty, $nb) = $board->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
523 return ( $pretty, prettyprint_pv_no_cache($nb, @pvs) );
527 my ($pos, @pvs) = @_;
529 my $cachekey = join('', @pvs);
530 if (exists($pos->{'prettyprint_cache'}{$cachekey})) {
531 return @{$pos->{'prettyprint_cache'}{$cachekey}};
533 my @res = prettyprint_pv_no_cache($pos->{'board'}, @pvs);
534 $pos->{'prettyprint_cache'}{$cachekey} = \@res;
539 sub complete_using_tbprobe {
540 my ($pos, $info, $mpv) = @_;
542 # We need Fathom installed to do standalone TB probes.
543 return if (!defined($remoteglotconf::fathom_cmdline));
545 # If we already have a mate, don't bother; in some cases, it would even be
546 # better than a tablebase score.
547 return if defined($info->{'score_mate' . $mpv});
549 # If we have a draw or near-draw score, there's also not much interesting
550 # we could add from a tablebase. We only really want mates.
551 return if ($info->{'score_cp' . $mpv} >= -12250 && $info->{'score_cp' . $mpv} <= 12250);
553 # Run through the PV until we are at a 6-man position.
554 # TODO: We could in theory only have 5-man data.
555 my @pv = @{$info->{'pv' . $mpv}};
556 my $key = join('', @pv);
558 if (exists($pos->{'tbprobe_cache'}{$key})) {
559 @moves = $pos->{'tbprobe_cache'}{$key};
561 while ($pos->num_pieces() > 6 && $#pv > -1) {
562 my $move = shift @pv;
564 $pos = $pos->make_move(parse_uci_move($move));
567 return if ($pos->num_pieces() > 6);
569 my $fen = $pos->fen();
570 my $pgn_text = `fathom --path=/srv/syzygy "$fen"`;
571 my $pgn = Chess::PGN::Parse->new(undef, $pgn_text);
572 return if (!defined($pgn) || !$pgn->read_game() || ($pgn->result ne '0-1' && $pgn->result ne '1-0'));
573 $pgn->quick_parse_game;
574 $info->{'pv' . $mpv} = \@moves;
576 # Splice the PV from the tablebase onto what we have so far.
577 for my $move (@{$pgn->moves}) {
579 ($pos, $uci_move) = $pos->make_pretty_move($move);
580 push @moves, $uci_move;
584 $info->{'pv' . $mpv} = \@moves;
586 my $matelen = int((1 + scalar @moves) / 2);
587 if ((scalar @moves) % 2 == 0) {
588 $info->{'score_mate' . $mpv} = -$matelen;
590 $info->{'score_mate' . $mpv} = $matelen;
597 return if (!defined($pos_calculating));
599 # Don't update too often.
600 my $age = Time::HiRes::tv_interval($latest_update);
601 if ($age < $remoteglotconf::update_max_interval) {
602 my $wait = $remoteglotconf::update_max_interval + 0.01 - $age;
603 $output_timer = AnyEvent->timer(after => $wait, cb => \&output);
607 my $info = $engine->{'info'};
610 # If we have tablebase data from a previous lookup, replace the
611 # engine data with the data from the tablebase.
613 my $fen = $pos_calculating->fen();
614 if (exists($tb_cache{$fen})) {
615 for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
616 delete $info->{$key . '1'};
617 delete $info->{$key};
619 $info->{'nodes'} = 0;
621 $info->{'depth'} = 0;
622 $info->{'seldepth'} = 0;
623 $info->{'tbhits'} = 0;
625 my $t = $tb_cache{$fen};
627 my $matelen = int((1 + $t->{'score'}) / 2);
628 if ($t->{'result'} eq '1/2-1/2') {
629 $info->{'score_cp'} = 0;
630 } elsif ($t->{'result'} eq '1-0') {
631 if ($pos_calculating->{'toplay'} eq 'B') {
632 $info->{'score_mate'} = -$matelen;
634 $info->{'score_mate'} = $matelen;
637 if ($pos_calculating->{'toplay'} eq 'B') {
638 $info->{'score_mate'} = $matelen;
640 $info->{'score_mate'} = -$matelen;
644 $info->{'tablebase'} = 1;
646 $info->{'tablebase'} = 0;
650 # Some programs _always_ report MultiPV, even with only one PV.
651 # In this case, we simply use that data as if MultiPV was never
654 if (exists($info->{'pv1'}) && !exists($info->{'pv2'})) {
655 for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
656 if (exists($info->{$key . '1'})) {
657 $info->{$key} = $info->{$key . '1'};
659 delete $info->{$key};
665 # Check the PVs first. if they're invalid, just wait, as our data
666 # is most likely out of sync. This isn't a very good solution, as
667 # it can frequently miss stuff, but it's good enough for most users.
671 if (exists($info->{'pv'})) {
672 $dummy = prettyprint_pv($pos_calculating, @{$info->{'pv'}});
676 while (exists($info->{'pv' . $mpv})) {
677 $dummy = prettyprint_pv($pos_calculating, @{$info->{'pv' . $mpv}});
682 $engine->{'info'} = {};
686 # Now do our own Syzygy tablebase probes to convert scores like +123.45 to mate.
687 if (exists($info->{'pv'})) {
688 complete_using_tbprobe($pos_calculating, $info, '');
692 while (exists($info->{'pv' . $mpv})) {
693 complete_using_tbprobe($pos_calculating, $info, $mpv);
699 $latest_update = [Time::HiRes::gettimeofday];
703 my $info = $engine->{'info'};
704 my $id = $engine->{'id'};
706 my $text = 'Analysis';
707 if ($pos_calculating->{'last_move'} ne 'none') {
708 if ($pos_calculating->{'toplay'} eq 'W') {
709 $text .= sprintf ' after %u. ... %s', ($pos_calculating->{'move_num'}-1), $pos_calculating->{'last_move'};
711 $text .= sprintf ' after %u. %s', $pos_calculating->{'move_num'}, $pos_calculating->{'last_move'};
713 if (exists($id->{'name'})) {
718 if (exists($id->{'name'})) {
719 $text .= " by $id->{'name'}:\n\n";
724 return unless (exists($pos_calculating->{'board'}));
726 if (exists($info->{'pv1'}) && exists($info->{'pv2'})) {
729 while (exists($info->{'pv' . $mpv})) {
730 $text .= sprintf " PV%2u", $mpv;
731 my $score = short_score($info, $pos_calculating, $mpv);
732 $text .= " ($score)" if (defined($score));
735 if (exists($info->{'tbhits' . $mpv}) && $info->{'tbhits' . $mpv} > 0) {
736 if ($info->{'tbhits' . $mpv} == 1) {
737 $tbhits = ", 1 tbhit";
739 $tbhits = sprintf ", %u tbhits", $info->{'tbhits' . $mpv};
743 if (exists($info->{'nodes' . $mpv}) && exists($info->{'nps' . $mpv}) && exists($info->{'depth' . $mpv})) {
744 $text .= sprintf " (%5u kn, %3u kn/s, %2u ply$tbhits)",
745 $info->{'nodes' . $mpv} / 1000, $info->{'nps' . $mpv} / 1000, $info->{'depth' . $mpv};
749 $text .= " " . join(', ', prettyprint_pv($pos_calculating, @{$info->{'pv' . $mpv}})) . "\n";
755 my $score = long_score($info, $pos_calculating, '');
756 $text .= " $score\n" if defined($score);
757 $text .= " PV: " . join(', ', prettyprint_pv($pos_calculating, @{$info->{'pv'}}));
760 if (exists($info->{'nodes'}) && exists($info->{'nps'}) && exists($info->{'depth'})) {
761 $text .= sprintf " %u nodes, %7u nodes/sec, depth %u ply",
762 $info->{'nodes'}, $info->{'nps'}, $info->{'depth'};
764 if (exists($info->{'seldepth'})) {
765 $text .= sprintf " (%u selective)", $info->{'seldepth'};
767 if (exists($info->{'tbhits'}) && $info->{'tbhits'} > 0) {
768 if ($info->{'tbhits'} == 1) {
769 $text .= ", one Syzygy hit";
771 $text .= sprintf ", %u Syzygy hits", $info->{'tbhits'};
777 #$text .= book_info($pos_calculating->fen(), $pos_calculating->{'board'}, $pos_calculating->{'toplay'});
779 my @refutation_lines = ();
780 if (defined($engine2)) {
781 for (my $mpv = 1; $mpv < 500; ++$mpv) {
782 my $info = $engine2->{'info'};
783 last if (!exists($info->{'pv' . $mpv}));
785 complete_using_tbprobe($pos_calculating_second_engine, $info, $mpv);
786 my $pv = $info->{'pv' . $mpv};
787 my $pretty_move = join('', prettyprint_pv($pos_calculating_second_engine, $pv->[0]));
788 my @pretty_pv = prettyprint_pv($pos_calculating_second_engine, @$pv);
789 if (scalar @pretty_pv > 5) {
790 @pretty_pv = @pretty_pv[0..4];
791 push @pretty_pv, "...";
793 my $key = $pretty_move;
794 my $line = sprintf(" %-6s %6s %3s %s",
796 short_score($info, $pos_calculating_second_engine, $mpv),
797 "d" . $info->{'depth' . $mpv},
798 join(', ', @pretty_pv));
799 push @refutation_lines, [ $key, $line ];
804 if ($#refutation_lines >= 0) {
805 $text .= "Shallow search of all legal moves:\n\n";
806 for my $line (sort { $a->[0] cmp $b->[0] } @refutation_lines) {
807 $text .= $line->[1] . "\n";
812 if ($last_text ne $text) {
813 print "
\e[H
\e[2J"; # clear the screen
820 my $historic_json_only = shift;
821 my $info = $engine->{'info'};
824 $json->{'position'} = $pos_calculating->to_json_hash();
825 $json->{'engine'} = $engine->{'id'};
826 if (defined($remoteglotconf::engine_url)) {
827 $json->{'engine'}{'url'} = $remoteglotconf::engine_url;
829 if (defined($remoteglotconf::engine_details)) {
830 $json->{'engine'}{'details'} = $remoteglotconf::engine_details;
832 if (defined($remoteglotconf::move_source)) {
833 $json->{'move_source'} = $remoteglotconf::move_source;
835 if (defined($remoteglotconf::move_source_url)) {
836 $json->{'move_source_url'} = $remoteglotconf::move_source_url;
838 $json->{'score'} = score_digest($info, $pos_calculating, '');
839 $json->{'using_lomonosov'} = defined($remoteglotconf::tb_serial_key);
841 $json->{'nodes'} = $info->{'nodes'};
842 $json->{'nps'} = $info->{'nps'};
843 $json->{'depth'} = $info->{'depth'};
844 $json->{'tbhits'} = $info->{'tbhits'};
845 $json->{'seldepth'} = $info->{'seldepth'};
846 $json->{'tablebase'} = $info->{'tablebase'};
848 $json->{'pv_uci'} = $info->{'pv'}; # Still needs to be there for the JS to calculate arrows; only for the primary PV, though!
849 $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating, @{$info->{'pv'}}) ];
851 my %refutation_lines = ();
852 my @refutation_lines = ();
853 if (defined($engine2)) {
854 for (my $mpv = 1; $mpv < 500; ++$mpv) {
855 my $info = $engine2->{'info'};
856 my $pretty_move = "";
858 last if (!exists($info->{'pv' . $mpv}));
861 complete_using_tbprobe($pos_calculating, $info, $mpv);
862 my $pv = $info->{'pv' . $mpv};
863 my $pretty_move = join('', prettyprint_pv($pos_calculating, $pv->[0]));
864 my @pretty_pv = prettyprint_pv($pos_calculating, @$pv);
865 $refutation_lines{$pv->[0]} = {
866 sort_key => $pretty_move,
867 depth => $info->{'depth' . $mpv},
868 score => score_digest($info, $pos_calculating, $mpv),
869 pretty_move => $pretty_move,
870 pv_pretty => \@pretty_pv,
875 $json->{'refutation_lines'} = \%refutation_lines;
877 # Piece together historic score information, to the degree we have it.
878 if (!$historic_json_only && exists($pos_calculating->{'pretty_history'})) {
879 my %score_history = ();
881 my $q = $dbh->prepare('SELECT * FROM scores WHERE id=?');
882 my $pos = Position->start_pos('white', 'black');
883 my $halfmove_num = 0;
884 for my $move (@{$pos_calculating->{'pretty_history'}}) {
885 my $id = id_for_pos($pos, $halfmove_num);
886 my $ref = $dbh->selectrow_hashref($q, undef, $id);
888 $score_history{$halfmove_num} = [
889 $ref->{'score_type'},
890 $ref->{'score_value'}
894 ($pos) = $pos->make_pretty_move($move);
898 # If at any point we are missing 10 consecutive moves,
899 # truncate the history there. This is so we don't get into
900 # a situation where we e.g. start analyzing at move 45,
901 # but we have analysis for 1. e4 from some completely different game
902 # and thus show a huge hole.
903 my $consecutive_missing = 0;
904 my $truncate_until = 0;
905 for (my $i = $halfmove_num; $i --> 0; ) {
906 if ($consecutive_missing >= 10) {
907 delete $score_history{$i};
910 if (exists($score_history{$i})) {
911 $consecutive_missing = 0;
913 ++$consecutive_missing;
917 $json->{'score_history'} = \%score_history;
920 # Give out a list of other games going on. (Empty is fine.)
921 # TODO: Don't bother reading our own file, the data will be stale anyway.
922 if (!$historic_json_only) {
925 my $q = $dbh->prepare('SELECT * FROM current_games ORDER BY priority DESC, id');
927 while (my $ref = $q->fetchrow_hashref) {
929 my $other_game_contents = File::Slurp::read_file($ref->{'json_path'});
930 my $other_game_json = JSON::XS::decode_json($other_game_contents);
932 die "Missing position" if (!exists($other_game_json->{'position'}));
933 my $white = $other_game_json->{'position'}{'player_w'} // die 'Missing white';
934 my $black = $other_game_json->{'position'}{'player_b'} // die 'Missing black';
938 name => "$white–$black",
939 url => $ref->{'url'},
940 hashurl => $ref->{'hash_url'},
942 if (defined($other_game_json->{'position'}{'result'})) {
943 $game->{'result'} = $other_game_json->{'position'}{'result'};
945 $game->{'score'} = $other_game_json->{'score'};
950 warn "Could not add external game " . $ref->{'json_path'} . ": $@";
954 if (scalar @games > 0) {
955 $json->{'games'} = \@games;
959 my $json_enc = JSON::XS->new;
960 $json_enc->canonical(1);
961 my $encoded = $json_enc->encode($json);
962 unless ($historic_json_only || !defined($remoteglotconf::json_output) ||
963 (defined($last_written_json) && $last_written_json eq $encoded)) {
964 atomic_set_contents($remoteglotconf::json_output, $encoded);
965 $last_written_json = $encoded;
968 if (exists($pos_calculating->{'pretty_history'}) &&
969 defined($remoteglotconf::json_history_dir)) {
970 my $id = id_for_pos($pos_calculating);
971 my $filename = $remoteglotconf::json_history_dir . "/" . $id . ".json";
973 # Overwrite old analysis (assuming it exists at all) if we're
974 # using a different engine, or if we've calculated deeper.
975 # nodes is used as a tiebreaker. Don't bother about Multi-PV
976 # data; it's not that important.
977 my ($old_engine, $old_depth, $old_nodes) = get_json_analysis_stats($id);
978 my $new_depth = $json->{'depth'} // 0;
979 my $new_nodes = $json->{'nodes'} // 0;
980 if (!defined($old_engine) ||
981 $old_engine ne $json->{'engine'}{'name'} ||
982 $new_depth > $old_depth ||
983 ($new_depth == $old_depth && $new_nodes >= $old_nodes)) {
984 atomic_set_contents($filename, $encoded);
985 if (defined($json->{'score'})) {
986 $dbh->do('INSERT INTO scores (id, score_type, score_value, engine, depth, nodes) VALUES (?,?,?,?,?,?) ' .
987 ' ON CONFLICT (id) DO UPDATE SET ' .
988 ' score_type=EXCLUDED.score_type, ' .
989 ' score_value=EXCLUDED.score_value, ' .
990 ' engine=EXCLUDED.engine, ' .
991 ' depth=EXCLUDED.depth, ' .
992 ' nodes=EXCLUDED.nodes',
994 $id, $json->{'score'}[0], $json->{'score'}[1],
995 $json->{'engine'}{'name'}, $new_depth, $new_nodes);
1001 sub atomic_set_contents {
1002 my ($filename, $contents) = @_;
1004 open my $fh, ">", $filename . ".tmp"
1006 print $fh $contents;
1008 rename($filename . ".tmp", $filename);
1012 my ($pos, $halfmove_num) = @_;
1014 $halfmove_num //= scalar @{$pos->{'pretty_history'}};
1015 (my $fen = $pos->fen()) =~ tr,/ ,-_,;
1016 return "move$halfmove_num-$fen";
1019 sub get_json_analysis_stats {
1021 my $ref = $dbh->selectrow_hashref('SELECT * FROM scores WHERE id=?', undef, $id);
1022 if (defined($ref)) {
1023 return ($ref->{'engine'}, $ref->{'depth'}, $ref->{'nodes'});
1030 my ($engine, $msg) = @_;
1031 $engine->print($msg);
1032 print UCILOG localtime() . " $engine->{'tag'} => $msg\n";
1036 my ($info, $pos, $mpv) = @_;
1038 my $invert = ($pos->{'toplay'} eq 'B');
1039 if (defined($info->{'score_mate' . $mpv})) {
1041 return sprintf "M%3d", -$info->{'score_mate' . $mpv};
1043 return sprintf "M%3d", $info->{'score_mate' . $mpv};
1046 if (exists($info->{'score_cp' . $mpv})) {
1047 my $score = $info->{'score_cp' . $mpv} * 0.01;
1049 if ($info->{'tablebase'}) {
1058 return sprintf "%+5.2f", $score;
1065 # Sufficient for computing long_score, short_score, plot_score and
1066 # (with side-to-play information) score_sort_key.
1068 my ($info, $pos, $mpv) = @_;
1070 if (defined($info->{'score_mate' . $mpv})) {
1071 my $mate = $info->{'score_mate' . $mpv};
1072 if ($pos->{'toplay'} eq 'B') {
1075 return ['m', $mate];
1077 if (exists($info->{'score_cp' . $mpv})) {
1078 my $score = $info->{'score_cp' . $mpv};
1079 if ($pos->{'toplay'} eq 'B') {
1082 if ($score == 0 && $info->{'tablebase'}) {
1083 return ['d', undef];
1085 return ['cp', $score];
1094 my ($info, $pos, $mpv) = @_;
1096 if (defined($info->{'score_mate' . $mpv})) {
1097 my $mate = $info->{'score_mate' . $mpv};
1098 if ($pos->{'toplay'} eq 'B') {
1102 return sprintf "White mates in %u", $mate;
1104 return sprintf "Black mates in %u", -$mate;
1107 if (exists($info->{'score_cp' . $mpv})) {
1108 my $score = $info->{'score_cp' . $mpv} * 0.01;
1110 if ($info->{'tablebase'}) {
1111 return "Theoretical draw";
1113 return "Score: 0.00";
1116 if ($pos->{'toplay'} eq 'B') {
1119 return sprintf "Score: %+5.2f", $score;
1126 # For graphs; a single number in centipawns, capped at +/- 500.
1128 my ($info, $pos, $mpv) = @_;
1130 my $invert = ($pos->{'toplay'} eq 'B');
1131 if (defined($info->{'score_mate' . $mpv})) {
1132 my $mate = $info->{'score_mate' . $mpv};
1142 if (exists($info->{'score_cp' . $mpv})) {
1143 my $score = $info->{'score_cp' . $mpv};
1147 $score = 500 if ($score > 500);
1148 $score = -500 if ($score < -500);
1156 my %book_cache = ();
1158 my ($fen, $board, $toplay) = @_;
1160 if (exists($book_cache{$fen})) {
1161 return $book_cache{$fen};
1164 my $ret = `./booklook $fen`;
1165 return "" if ($ret =~ /Not found/ || $ret eq '');
1169 for my $m (split /\n/, $ret) {
1170 my ($move, $annotation, $win, $draw, $lose, $rating, $rating_div) = split /,/, $m;
1174 $pmove = '(current)';
1176 ($pmove) = prettyprint_pv_no_cache($board, $move);
1177 $pmove .= $annotation;
1181 if ($toplay eq 'W') {
1182 $score = 1.0 * $win + 0.5 * $draw + 0.0 * $lose;
1184 $score = 0.0 * $win + 0.5 * $draw + 1.0 * $lose;
1186 my $n = $win + $draw + $lose;
1192 $percent = sprintf "%4u%%", int(100.0 * $score / $n + 0.5);
1195 push @moves, [ $pmove, $n, $percent, $rating ];
1198 @moves[1..$#moves] = sort { $b->[2] cmp $a->[2] } @moves[1..$#moves];
1200 my $text = "Book moves:\n\n Perf. N Rating\n\n";
1201 for my $m (@moves) {
1202 $text .= sprintf " %-10s %s %6u %4s\n", $m->[0], $m->[2], $m->[1], $m->[3]
1209 my ($pgn, $pos) = @_;
1211 # Look for extended PGN clock tags.
1212 my $tags = $pgn->tags;
1213 if (exists($tags->{'WhiteClock'}) && exists($tags->{'BlackClock'})) {
1214 $pos->{'white_clock'} = hms_to_sec($tags->{'WhiteClock'});
1215 $pos->{'black_clock'} = hms_to_sec($tags->{'BlackClock'});
1219 # Look for TCEC-style time comments.
1220 my $moves = $pgn->moves;
1221 my $comments = $pgn->comments;
1222 my $last_black_move = int((scalar @$moves) / 2);
1223 my $last_white_move = int((1 + scalar @$moves) / 2);
1225 my $black_key = $last_black_move . "b";
1226 my $white_key = $last_white_move . "w";
1228 if (exists($comments->{$white_key}) &&
1229 exists($comments->{$black_key}) &&
1230 $comments->{$white_key} =~ /(?:tl=|clk )(\d+:\d+:\d+)/ &&
1231 $comments->{$black_key} =~ /(?:tl=|clk )(\d+:\d+:\d+)/) {
1232 $comments->{$white_key} =~ /(?:tl=|clk )(\d+:\d+:\d+)/;
1233 $pos->{'white_clock'} = hms_to_sec($1);
1234 $comments->{$black_key} =~ /(?:tl=|clk )(\d+:\d+:\d+)/;
1235 $pos->{'black_clock'} = hms_to_sec($1);
1239 delete $pos->{'white_clock'};
1240 delete $pos->{'black_clock'};
1245 return undef if (!defined($hms));
1246 $hms =~ /(\d+):(\d+):(\d+)/;
1247 return $1 * 3600 + $2 * 60 + $3;
1250 sub find_clock_start {
1251 my ($pos, $prev_pos) = @_;
1253 # If the game is over, the clock is stopped.
1254 if (exists($pos->{'result'}) &&
1255 ($pos->{'result'} eq '1-0' ||
1256 $pos->{'result'} eq '1/2-1/2' ||
1257 $pos->{'result'} eq '0-1')) {
1261 # When we don't have any moves, we assume the clock hasn't started yet.
1262 if ($pos->{'move_num'} == 1 && $pos->{'toplay'} eq 'W') {
1263 if (defined($remoteglotconf::adjust_clocks_before_move)) {
1264 &$remoteglotconf::adjust_clocks_before_move(\$pos->{'white_clock'}, \$pos->{'black_clock'}, 1, 'W');
1269 # TODO(sesse): Maybe we can get the number of moves somehow else for FICS games.
1270 # The history is needed for id_for_pos.
1271 if (!exists($pos->{'pretty_history'})) {
1275 my $id = id_for_pos($pos);
1276 my $clock_info = $dbh->selectrow_hashref('SELECT * FROM clock_info WHERE id=?', undef, $id);
1277 if (defined($clock_info)) {
1278 $pos->{'white_clock'} //= $clock_info->{'white_clock'};
1279 $pos->{'black_clock'} //= $clock_info->{'black_clock'};
1280 if ($pos->{'toplay'} eq 'W') {
1281 $pos->{'white_clock_target'} = $clock_info->{'white_clock_target'};
1283 $pos->{'black_clock_target'} = $clock_info->{'black_clock_target'};
1288 # OK, we haven't seen this position before, so we assume the move
1289 # happened right now.
1291 # See if we should do our own clock management (ie., clock information
1292 # is spurious or non-existent).
1293 if (defined($remoteglotconf::adjust_clocks_before_move)) {
1294 my $wc = $pos->{'white_clock'} // $prev_pos->{'white_clock'};
1295 my $bc = $pos->{'black_clock'} // $prev_pos->{'black_clock'};
1296 if (defined($prev_pos->{'white_clock_target'})) {
1297 $wc = $prev_pos->{'white_clock_target'} - time;
1299 if (defined($prev_pos->{'black_clock_target'})) {
1300 $bc = $prev_pos->{'black_clock_target'} - time;
1302 &$remoteglotconf::adjust_clocks_before_move(\$wc, \$bc, $pos->{'move_num'}, $pos->{'toplay'});
1303 $pos->{'white_clock'} = $wc;
1304 $pos->{'black_clock'} = $bc;
1307 my $key = ($pos->{'toplay'} eq 'W') ? 'white_clock' : 'black_clock';
1308 if (!exists($pos->{$key})) {
1309 # No clock information.
1312 my $time_left = $pos->{$key};
1313 my ($white_clock_target, $black_clock_target);
1314 if ($pos->{'toplay'} eq 'W') {
1315 $white_clock_target = $pos->{'white_clock_target'} = time + $time_left;
1317 $black_clock_target = $pos->{'black_clock_target'} = time + $time_left;
1319 local $dbh->{AutoCommit} = 0;
1320 $dbh->do('DELETE FROM clock_info WHERE id=?', undef, $id);
1321 $dbh->do('INSERT INTO clock_info (id, white_clock, black_clock, white_clock_target, black_clock_target) VALUES (?, ?, ?, ?, ?)', undef,
1322 $id, $pos->{'white_clock'}, $pos->{'black_clock'}, $white_clock_target, $black_clock_target);
1326 sub schedule_tb_lookup {
1327 return if (!defined($remoteglotconf::tb_serial_key));
1328 my $pos = $pos_waiting // $pos_calculating;
1329 return if (exists($tb_cache{$pos->fen()}));
1331 # If there's more than seven pieces, there's not going to be an answer,
1333 return if ($pos->num_pieces() > 7);
1335 # Max one at a time. If it's still relevant when it returns,
1336 # schedule_tb_lookup() will be called again.
1337 return if ($tb_lookup_running);
1339 $tb_lookup_running = 1;
1340 my $url = 'http://158.250.18.203:6904/tasks/addtask?auth.login=' .
1341 $remoteglotconf::tb_serial_key .
1342 '&auth.password=aquarium&type=0&fen=' .
1343 URI::Escape::uri_escape($pos->fen());
1344 print TBLOG "Downloading $url...\n";
1345 AnyEvent::HTTP::http_get($url, sub {
1346 handle_tb_lookup_return(@_, $pos, $pos->fen());
1350 sub handle_tb_lookup_return {
1351 my ($body, $header, $pos, $fen) = @_;
1352 print TBLOG "Response for [$fen]:\n";
1353 print TBLOG $header . "\n\n";
1354 print TBLOG $body . "\n\n";
1356 my $response = JSON::XS::decode_json($body);
1357 if ($response->{'ErrorCode'} != 0) {
1358 die "Unknown tablebase server error: " . $response->{'ErrorDesc'};
1360 my $state = $response->{'Response'}{'StateString'};
1361 if ($state eq 'COMPLETE') {
1362 my $pgn = Chess::PGN::Parse->new(undef, $response->{'Response'}{'Moves'});
1363 if (!defined($pgn) || !$pgn->read_game()) {
1364 warn "Error in parsing PGN\n";
1366 $pgn->quick_parse_game;
1368 my $moves = $pgn->moves;
1370 for my $move (@$moves) {
1372 ($pvpos, $uci_move) = $pvpos->make_pretty_move($move);
1373 push @uci_moves, $uci_move;
1376 result => $pgn->result,
1378 score => $response->{'Response'}{'Score'},
1382 } elsif ($state =~ /QUEUED/ || $state =~ /PROCESSING/) {
1383 # Try again in a second. Note that if we have changed
1384 # position in the meantime, we might query a completely
1385 # different position! But that's fine.
1387 die "Unknown response state " . $state;
1390 # Wait a second before we schedule another one.
1391 $tb_retry_timer = AnyEvent->timer(after => 1.0, cb => sub {
1392 $tb_lookup_running = 0;
1393 schedule_tb_lookup();
1397 warn "Error in tablebase lookup: $@";
1399 # Don't try this one again, but don't block new lookups either.
1400 $tb_lookup_running = 0;
1405 my ($cmdline, $tag, $cb) = @_;
1406 return undef if (!defined($cmdline));
1407 return Engine->open($cmdline, $tag, $cb);
1410 sub col_letter_to_num {
1411 return ord(shift) - ord('a');
1414 sub row_letter_to_num {
1415 return 7 - (ord(shift) - ord('1'));
1418 sub parse_uci_move {
1420 my $from_col = col_letter_to_num(substr($move, 0, 1));
1421 my $from_row = row_letter_to_num(substr($move, 1, 1));
1422 my $to_col = col_letter_to_num(substr($move, 2, 1));
1423 my $to_row = row_letter_to_num(substr($move, 3, 1));
1424 my $promo = substr($move, 4, 1);
1425 return ($from_row, $from_col, $to_row, $to_col, $promo);