use IPC::Open2;
use Time::HiRes;
use JSON::XS;
+use URI::Escape;
require 'Position.pm';
require 'Engine.pm';
require 'config.pm';
no warnings qw(once);
# Program starts here
-$SIG{ALRM} = sub { output(); };
my $latest_update = undef;
+my $output_timer = undef;
my $http_timer = undef;
+my $stop_pgn_fetch = 0;
+my $tb_retry_timer = undef;
+my %tb_cache = ();
+my $tb_lookup_running = 0;
$| = 1;
print UCILOG "Log starting.\n";
select(UCILOG);
$| = 1;
+
+open(TBLOG, ">tblog.txt")
+ or die "tblog.txt: $!";
+print TBLOG "Log starting.\n";
+select(TBLOG);
+$| = 1;
+
select(STDOUT);
# open the chess engine
$t->cmd("set shout 0");
$t->cmd("set seek 0");
$t->cmd("set style 12");
-$t->cmd("observe $remoteglotconf::target");
-print "FICS ready.\n";
my $ev1 = AnyEvent->io(
fh => fileno($t),
}
}
);
+if (defined($remoteglotconf::target)) {
+ if ($remoteglotconf::target =~ /^http:/) {
+ fetch_pgn($remoteglotconf::target);
+ } else {
+ $t->cmd("observe $remoteglotconf::target");
+ }
+}
+print "FICS ready.\n";
+
# Engine events have already been set up by Engine.pm.
EV::run;
output();
}
+my $getting_movelist = 0;
+my $pos_for_movelist = undef;
+my @uci_movelist = ();
+my @pretty_movelist = ();
+
sub handle_fics {
my $line = shift;
if ($line =~ /^<12> /) {
handle_position(Position->new($line));
+ $t->cmd("moves");
+ }
+ if ($line =~ /^Movelist for game /) {
+ my $pos = $pos_waiting // $pos_calculating;
+ if (defined($pos)) {
+ @uci_movelist = ();
+ @pretty_movelist = ();
+ $pos_for_movelist = Position->start_pos($pos->{'player_w'}, $pos->{'player_b'});
+ $getting_movelist = 1;
+ }
+ }
+ if ($getting_movelist &&
+ $line =~ /^\s* \d+\. \s+ # move number
+ (\S+) \s+ \( [\d:.]+ \) \s* # first move, then time
+ (?: (\S+) \s+ \( [\d:.]+ \) )? # second move, then time
+ /x) {
+ eval {
+ my $uci_move;
+ ($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($1);
+ push @uci_movelist, $uci_move;
+ push @pretty_movelist, $1;
+
+ if (defined($2)) {
+ ($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($2);
+ push @uci_movelist, $uci_move;
+ push @pretty_movelist, $2;
+ }
+ };
+ if ($@) {
+ warn "Error when getting FICS move history: $@";
+ $getting_movelist = 0;
+ }
+ }
+ if ($getting_movelist &&
+ $line =~ /^\s+ \{.*\} \s+ (?: \* | 1\/2-1\/2 | 0-1 | 1-0 )/x) {
+ # End of movelist.
+ for my $pos ($pos_waiting, $pos_calculating) {
+ next if (!defined($pos));
+ if ($pos->fen() eq $pos_for_movelist->fen()) {
+ $pos->{'history'} = \@uci_movelist;
+ }
+ }
+ $getting_movelist = 0;
}
if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
my ($who, $msg) = ($1, $2);
} elsif ($msg =~ /^pgn (.*?)$/) {
my $url = $1;
$t->cmd("tell $who Starting to poll '$url'.");
- AnyEvent::HTTP::http_get($url, sub {
- handle_pgn(@_, $url);
- });
+ fetch_pgn($url);
} elsif ($msg =~ /^stoppgn$/) {
$t->cmd("tell $who Stopping poll.");
+ $stop_pgn_fetch = 1;
$http_timer = undef;
} elsif ($msg =~ /^quit$/) {
$t->cmd("tell $who Bye bye.");
#print "FICS: [$line]\n";
}
+# Starts periodic fetching of PGNs from the given URL.
+sub fetch_pgn {
+ my ($url) = @_;
+ AnyEvent::HTTP::http_get($url, sub {
+ handle_pgn(@_, $url);
+ });
+}
+
+my ($last_pgn_white, $last_pgn_black);
+my @last_pgn_uci_moves = ();
+my $pgn_hysteresis_counter = 0;
+
sub handle_pgn {
my ($body, $header, $url) = @_;
+
+ if ($stop_pgn_fetch) {
+ $stop_pgn_fetch = 0;
+ $http_timer = undef;
+ return;
+ }
+
my $pgn = Chess::PGN::Parse->new(undef, $body);
if (!defined($pgn) || !$pgn->read_game()) {
warn "Error in parsing PGN from $url\n";
} else {
- $pgn->quick_parse_game;
- my $pos = Position->start_pos($pgn->white, $pgn->black);
- my $moves = $pgn->moves;
- my @uci_moves = ();
- for my $move (@$moves) {
- my ($from_row, $from_col, $to_row, $to_col, $promo) = $pos->parse_pretty_move($move);
- push @uci_moves, Board::move_to_uci_notation($from_row, $from_col, $to_row, $to_col, $promo);
- $pos = $pos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
- }
- $pos->{'history'} = \@uci_moves;
- $pos->{'pretty_history'} = $moves;
- handle_position($pos);
+ eval {
+ $pgn->quick_parse_game;
+ my $pos = Position->start_pos($pgn->white, $pgn->black);
+ my $moves = $pgn->moves;
+ my @uci_moves = ();
+ for my $move (@$moves) {
+ my $uci_move;
+ ($pos, $uci_move) = $pos->make_pretty_move($move);
+ push @uci_moves, $uci_move;
+ }
+ $pos->{'history'} = \@uci_moves;
+
+ # Sometimes, PGNs lose a move or two for a short while,
+ # or people push out new ones non-atomically.
+ # Thus, if we PGN doesn't change names but becomes
+ # shorter, we mistrust it for a few seconds.
+ my $trust_pgn = 1;
+ if (defined($last_pgn_white) && defined($last_pgn_black) &&
+ $last_pgn_white eq $pgn->white &&
+ $last_pgn_black eq $pgn->black &&
+ scalar(@uci_moves) < scalar(@last_pgn_uci_moves)) {
+ if (++$pgn_hysteresis_counter < 3) {
+ $trust_pgn = 0;
+ }
+ }
+ if ($trust_pgn) {
+ $last_pgn_white = $pgn->white;
+ $last_pgn_black = $pgn->black;
+ @last_pgn_uci_moves = @uci_moves;
+ $pgn_hysteresis_counter = 0;
+ handle_position($pos);
+ }
+ };
+ if ($@) {
+ warn "Error in parsing moves from $url\n";
+ }
}
$http_timer = AnyEvent->timer(after => 1.0, cb => sub {
- AnyEvent::HTTP::http_get($url, sub {
- handle_pgn(@_, $url);
- });
+ fetch_pgn($url);
});
}
$engine->{'info'} = {};
$last_move = time;
+ schedule_tb_lookup();
+
#
# Output a command every move to note that we're
# still paying attention -- this is a good tradeoff,
# Don't update too often.
my $age = Time::HiRes::tv_interval($latest_update);
if ($age < $remoteglotconf::update_max_interval) {
- Time::HiRes::alarm($remoteglotconf::update_max_interval + 0.01 - $age);
+ my $wait = $remoteglotconf::update_max_interval + 0.01 - $age;
+ $output_timer = AnyEvent->timer(after => $wait, cb => \&output);
return;
}
my $info = $engine->{'info'};
+
+ #
+ # If we have tablebase data from a previous lookup, replace the
+ # engine data with the data from the tablebase.
+ #
+ my $fen = $pos_calculating->fen();
+ if (exists($tb_cache{$fen})) {
+ for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
+ delete $info->{$key . '1'};
+ delete $info->{$key};
+ }
+ $info->{'nodes'} = 0;
+ $info->{'nps'} = 0;
+ $info->{'depth'} = 0;
+ $info->{'seldepth'} = 0;
+ $info->{'tbhits'} = 0;
+
+ my $t = $tb_cache{$fen};
+ my $pv = $t->{'pv'};
+ my $matelen = int((1 + $t->{'score'}) / 2);
+ if ($t->{'result'} eq '1/2-1/2') {
+ $info->{'score_cp'} = 0;
+ } elsif ($t->{'result'} eq '1-0') {
+ if ($pos_calculating->{'toplay'} eq 'B') {
+ $info->{'score_mate'} = -$matelen;
+ } else {
+ $info->{'score_mate'} = $matelen;
+ }
+ } else {
+ if ($pos_calculating->{'toplay'} eq 'B') {
+ $info->{'score_mate'} = $matelen;
+ } else {
+ $info->{'score_mate'} = -$matelen;
+ }
+ }
+ $info->{'pv'} = $pv;
+ $info->{'tablebase'} = 1;
+ } else {
+ $info->{'tablebase'} = 0;
+ }
#
# Some programs _always_ report MultiPV, even with only one PV.
my $key = $pretty_move;
my $line = sprintf(" %-6s %6s %3s %s",
$pretty_move,
- short_score($info, $pos_calculating_second_engine, $mpv, 0),
+ short_score($info, $pos_calculating_second_engine, $mpv),
"d" . $info->{'depth' . $mpv},
join(', ', @pretty_pv));
push @refutation_lines, [ $key, $line ];
$json->{'position'} = $pos_calculating->to_json_hash();
$json->{'id'} = $engine->{'id'};
$json->{'score'} = long_score($info, $pos_calculating, '');
+ $json->{'short_score'} = short_score($info, $pos_calculating, '');
$json->{'nodes'} = $info->{'nodes'};
$json->{'nps'} = $info->{'nps'};
$json->{'depth'} = $info->{'depth'};
$json->{'tbhits'} = $info->{'tbhits'};
$json->{'seldepth'} = $info->{'seldepth'};
+ $json->{'tablebase'} = $info->{'tablebase'};
# single-PV only for now
$json->{'pv_uci'} = $info->{'pv'};
- $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating, @{$info->{'pv'}}) ];
my %refutation_lines = ();
my @refutation_lines = ();
sort_key => $pretty_move,
depth => $info->{'depth' . $mpv},
score_sort_key => score_sort_key($info, $pos_calculating, $mpv, 0),
- pretty_score => short_score($info, $pos_calculating, $mpv, 0),
+ pretty_score => short_score($info, $pos_calculating, $mpv),
pretty_move => $pretty_move,
- pv_pretty => \@pretty_pv,
};
$refutation_lines{$pv->[0]}->{'pv_uci'} = $pv;
};
}
$json->{'refutation_lines'} = \%refutation_lines;
- open my $fh, ">/srv/analysis.sesse.net/www/analysis.json.tmp"
+ my $encoded = JSON::XS::encode_json($json);
+ atomic_set_contents($remoteglotconf::json_output, $encoded);
+
+ if (exists($pos_calculating->{'history'}) &&
+ defined($remoteglotconf::json_history_dir)) {
+ my $halfmove_num = scalar @{$pos_calculating->{'history'}};
+ (my $fen = $pos_calculating->fen()) =~ tr,/ ,-_,;
+ my $filename = $remoteglotconf::json_history_dir . "/move$halfmove_num-$fen.json";
+
+ # Overwrite old analysis (assuming it exists at all) if we're
+ # using a different engine, or if we've calculated deeper.
+ # nodes is used as a tiebreaker. Don't bother about Multi-PV
+ # data; it's not that important.
+ my ($old_engine, $old_depth, $old_nodes) = get_json_analysis_stats($filename);
+ my $new_depth = $json->{'depth'} // 0;
+ my $new_nodes = $json->{'nodes'} // 0;
+ if (!defined($old_engine) ||
+ $old_engine ne $json->{'id'}{'name'} ||
+ $new_depth > $old_depth ||
+ ($new_depth == $old_depth && $new_nodes >= $old_nodes)) {
+ atomic_set_contents($filename, $encoded);
+ }
+ }
+}
+
+sub atomic_set_contents {
+ my ($filename, $contents) = @_;
+
+ open my $fh, ">", $filename . ".tmp"
or return;
- print $fh JSON::XS::encode_json($json);
+ print $fh $contents;
close $fh;
- rename("/srv/analysis.sesse.net/www/analysis.json.tmp", "/srv/analysis.sesse.net/www/analysis.json");
+ rename($filename . ".tmp", $filename);
+}
+
+sub get_json_analysis_stats {
+ my $filename = shift;
+
+ my ($engine, $depth, $nodes);
+
+ open my $fh, "<", $filename
+ or return undef;
+ local $/ = undef;
+ eval {
+ my $json = JSON::XS::decode_json(<$fh>);
+ $engine = $json->{'id'}{'name'} // die;
+ $depth = $json->{'depth'} // 0;
+ $nodes = $json->{'nodes'} // 0;
+ };
+ close $fh;
+ if ($@) {
+ warn "Error in decoding $filename: $@";
+ return undef;
+ }
+ return ($engine, $depth, $nodes);
}
sub uciprint {
}
sub short_score {
- my ($info, $pos, $mpv, $invert) = @_;
-
- $invert //= 0;
- if ($pos->{'toplay'} eq 'B') {
- $invert = !$invert;
- }
+ my ($info, $pos, $mpv) = @_;
+ my $invert = ($pos->{'toplay'} eq 'B');
if (defined($info->{'score_mate' . $mpv})) {
if ($invert) {
return sprintf "M%3d", -$info->{'score_mate' . $mpv};
if (exists($info->{'score_cp' . $mpv})) {
my $score = $info->{'score_cp' . $mpv} * 0.01;
if ($score == 0) {
- return " 0.00";
+ if ($info->{'tablebase'}) {
+ return "TB draw";
+ } else {
+ return " 0.00";
+ }
}
if ($invert) {
$score = -$score;
my ($info, $pos, $mpv, $invert) = @_;
if (defined($info->{'score_mate' . $mpv})) {
- if ($invert) {
- return 99999 - $info->{'score_mate' . $mpv};
+ my $mate = $info->{'score_mate' . $mpv};
+ my $score;
+ if ($mate > 0) {
+ # Side to move mates
+ $score = 99999 - $mate;
} else {
- return -(99999 - $info->{'score_mate' . $mpv});
+ # Side to move is getting mated (note the double negative for $mate)
+ $score = -99999 - $mate;
}
+ if ($invert) {
+ $score = -$score;
+ }
+ return $score;
} else {
if (exists($info->{'score_cp' . $mpv})) {
my $score = $info->{'score_cp' . $mpv};
if (exists($info->{'score_cp' . $mpv})) {
my $score = $info->{'score_cp' . $mpv} * 0.01;
if ($score == 0) {
- return "Score: 0.00";
+ if ($info->{'tablebase'}) {
+ return "Theoretical draw";
+ } else {
+ return "Score: 0.00";
+ }
}
if ($pos->{'toplay'} eq 'B') {
$score = -$score;
return $text;
}
+sub schedule_tb_lookup {
+ return if (!defined($remoteglotconf::tb_serial_key));
+ my $pos = $pos_waiting // $pos_calculating;
+ return if (exists($tb_cache{$pos->fen()}));
+
+ # If there's more than seven pieces, there's not going to be an answer,
+ # so don't bother.
+ return if ($pos->num_pieces() > 7);
+
+ # Max one at a time. If it's still relevant when it returns,
+ # schedule_tb_lookup() will be called again.
+ return if ($tb_lookup_running);
+
+ $tb_lookup_running = 1;
+ my $url = 'http://158.250.18.203:6904/tasks/addtask?auth.login=' .
+ $remoteglotconf::tb_serial_key .
+ '&auth.password=aquarium&type=0&fen=' .
+ URI::Escape::uri_escape($pos->fen());
+ print TBLOG "Downloading $url...\n";
+ AnyEvent::HTTP::http_get($url, sub {
+ handle_tb_lookup_return(@_, $pos, $pos->fen());
+ });
+}
+
+sub handle_tb_lookup_return {
+ my ($body, $header, $pos, $fen) = @_;
+ print TBLOG "Response for [$fen]:\n";
+ print TBLOG $header . "\n\n";
+ print TBLOG $body . "\n\n";
+ eval {
+ my $response = JSON::XS::decode_json($body);
+ if ($response->{'ErrorCode'} != 0) {
+ die "Unknown tablebase server error: " . $response->{'ErrorDesc'};
+ }
+ my $state = $response->{'Response'}{'StateString'};
+ if ($state eq 'COMPLETE') {
+ my $pgn = Chess::PGN::Parse->new(undef, $response->{'Response'}{'Moves'});
+ if (!defined($pgn) || !$pgn->read_game()) {
+ warn "Error in parsing PGN\n";
+ } else {
+ $pgn->quick_parse_game;
+ my $pvpos = $pos;
+ my $moves = $pgn->moves;
+ my @uci_moves = ();
+ for my $move (@$moves) {
+ my $uci_move;
+ ($pvpos, $uci_move) = $pvpos->make_pretty_move($move);
+ push @uci_moves, $uci_move;
+ }
+ $tb_cache{$fen} = {
+ result => $pgn->result,
+ pv => \@uci_moves,
+ score => $response->{'Response'}{'Score'},
+ };
+ output();
+ }
+ } elsif ($state =~ /QUEUED/ || $state =~ /PROCESSING/) {
+ # Try again in a second. Note that if we have changed
+ # position in the meantime, we might query a completely
+ # different position! But that's fine.
+ } else {
+ die "Unknown response state " . $state;
+ }
+
+ # Wait a second before we schedule another one.
+ $tb_retry_timer = AnyEvent->timer(after => 1.0, cb => sub {
+ $tb_lookup_running = 0;
+ schedule_tb_lookup();
+ });
+ };
+ if ($@) {
+ warn "Error in tablebase lookup: $@";
+
+ # Don't try this one again, but don't block new lookups either.
+ $tb_lookup_running = 0;
+ }
+}
+
sub open_engine {
my ($cmdline, $tag, $cb) = @_;
return undef if (!defined($cmdline));
projects / remoteglot / blobdiff