| 1 |
=head1 NAME |
| 2 |
|
| 3 |
CFPlus - undocumented utility garbage for our crossfire client |
| 4 |
|
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=head1 SYNOPSIS |
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|
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use CFPlus; |
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|
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=head1 DESCRIPTION |
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|
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=over 4 |
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|
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=cut |
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|
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package CFPlus; |
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|
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use Carp (); |
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|
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BEGIN { |
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$VERSION = '0.97'; |
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|
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use XSLoader; |
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XSLoader::load "CFPlus", $VERSION; |
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} |
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|
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use utf8; |
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|
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use AnyEvent (); |
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use BerkeleyDB; |
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use Pod::POM (); |
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use File::Path (); |
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use Storable (); # finally |
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|
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BEGIN { |
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use Crossfire::Protocol::Base (); |
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*to_json = \&Crossfire::Protocol::Base::to_json; |
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*from_json = \&Crossfire::Protocol::Base::from_json; |
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} |
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|
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=item guard { BLOCK } |
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|
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Returns an object that executes the given block as soon as it is destroyed. |
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|
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=cut |
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|
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sub guard(&) { |
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bless \(my $cb = $_[0]), "CFPlus::Guard" |
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} |
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|
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sub CFPlus::Guard::DESTROY { |
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${$_[0]}->() |
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} |
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|
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=item shorten $string[, $maxlength] |
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|
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=cut |
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|
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sub shorten($;$) { |
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my ($str, $len) = @_; |
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substr $str, $len, (length $str), "..." if $len + 3 <= length $str; |
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$str |
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} |
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|
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sub asxml($) { |
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local $_ = $_[0]; |
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|
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s/&/&/g; |
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s/>/>/g; |
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s/</</g; |
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|
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$_ |
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} |
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|
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sub socketpipe() { |
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socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC |
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or die "cannot establish bidiretcional pipe: $!\n"; |
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|
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($fh1, $fh2) |
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} |
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|
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sub background(&;&) { |
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my ($bg, $cb) = @_; |
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|
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my ($fh_r, $fh_w) = CFPlus::socketpipe; |
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|
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my $pid = fork; |
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|
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if (defined $pid && !$pid) { |
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local $SIG{__DIE__}; |
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|
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open STDOUT, ">&", $fh_w; |
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open STDERR, ">&", $fh_w; |
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close $fh_r; |
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close $fh_w; |
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|
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$| = 1; |
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|
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eval { $bg->() }; |
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|
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if ($@) { |
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my $msg = $@; |
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$msg =~ s/\n+/\n/; |
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warn "FATAL: $msg"; |
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CFPlus::_exit 1; |
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} |
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|
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# win32 is fucked up, of course. exit will clean stuff up, |
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# which destroys our database etc. _exit will exit ALL |
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# forked processes, because of the dreaded fork emulation. |
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CFPlus::_exit 0; |
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} |
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|
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close $fh_w; |
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|
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my $buffer; |
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|
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my $w; $w = AnyEvent->io (fh => $fh_r, poll => 'r', cb => sub { |
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unless (sysread $fh_r, $buffer, 4096, length $buffer) { |
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undef $w; |
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$cb->(); |
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return; |
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} |
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|
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while ($buffer =~ s/^(.*)\n//) { |
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my $line = $1; |
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$line =~ s/\s+$//; |
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utf8::decode $line; |
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if ($line =~ /^\x{e877}json_msg (.*)$/s) { |
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$cb->(from_json $1); |
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} else { |
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::message ({ |
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markup => "background($pid): " . CFPlus::asxml $line, |
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}); |
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} |
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} |
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}); |
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} |
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|
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sub background_msg { |
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my ($msg) = @_; |
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|
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$msg = "\x{e877}json_msg " . to_json $msg; |
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$msg =~ s/\n//g; |
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utf8::encode $msg; |
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print $msg, "\n"; |
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} |
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|
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package CFPlus::Database; |
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|
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our @ISA = BerkeleyDB::Btree::; |
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|
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sub get($$) { |
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my $data; |
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|
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$_[0]->db_get ($_[1], $data) == 0 |
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? $data |
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: () |
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} |
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|
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my %DB_SYNC; |
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|
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sub put($$$) { |
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my ($db, $key, $data) = @_; |
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|
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my $hkey = $db + 0; |
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CFPlus::weaken $db; |
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$DB_SYNC{$hkey} ||= AnyEvent->timer (after => 5, cb => sub { |
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delete $DB_SYNC{$hkey}; |
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$db->db_sync if $db; |
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}); |
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|
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$db->db_put ($key => $data) |
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} |
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|
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package CFPlus; |
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|
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sub find_rcfile($) { |
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my $path; |
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|
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for (grep !ref, @INC) { |
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$path = "$_/CFPlus/resources/$_[0]"; |
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return $path if -r $path; |
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} |
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|
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die "FATAL: can't find required file $_[0]\n"; |
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} |
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|
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sub read_cfg { |
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my ($file) = @_; |
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|
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open my $fh, $file |
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or return; |
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|
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local $/; |
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my $CFG = <$fh>; |
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|
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if ($CFG =~ /^---/) { ## TODO compatibility cruft, remove |
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require YAML; |
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utf8::decode $CFG; |
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$::CFG = YAML::Load ($CFG); |
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} elsif ($CFG =~ /^\{/) { |
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$::CFG = from_json $CFG; |
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} else { |
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$::CFG = eval $CFG; ## todo comaptibility cruft |
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} |
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} |
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|
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sub write_cfg { |
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my ($file) = @_; |
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|
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$::CFG->{VERSION} = $::VERSION; |
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|
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open my $fh, ">:utf8", $file |
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or return; |
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print $fh to_json $::CFG; |
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} |
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|
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sub http_proxy { |
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my @proxy = win32_proxy_info; |
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|
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if (@proxy) { |
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"http://" . (@proxy < 2 ? "" : @proxy < 3 ? "$proxy[1]\@" : "$proxy[1]:$proxy[2]\@") . $proxy[0] |
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} elsif (exists $ENV{http_proxy}) { |
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$ENV{http_proxy} |
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} else { |
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() |
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} |
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} |
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|
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sub set_proxy { |
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my $proxy = http_proxy |
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or return; |
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|
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$ENV{http_proxy} = $proxy; |
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} |
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|
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sub lwp_useragent { |
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require LWP::UserAgent; |
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|
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CFPlus::set_proxy; |
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|
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my $ua = LWP::UserAgent->new ( |
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agent => "cfplus $VERSION", |
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keep_alive => 1, |
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env_proxy => 1, |
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timeout => 30, |
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); |
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} |
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|
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sub lwp_check($) { |
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my ($res) = @_; |
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|
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$res->is_error |
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and die $res->status_line; |
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|
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$res |
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} |
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|
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our $DB_ENV; |
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our $DB_STATE; |
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|
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sub db_table($) { |
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my ($table) = @_; |
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|
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$table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge; |
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|
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new CFPlus::Database |
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-Env => $DB_ENV, |
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-Filename => $table, |
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# -Filename => "database", |
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# -Subname => $table, |
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-Property => DB_CHKSUM, |
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-Flags => DB_CREATE | DB_UPGRADE, |
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or die "unable to create/open database table $_[0]: $BerkeleyDB::Error" |
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} |
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|
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our $DB_HOME = "$Crossfire::VARDIR/cfplus"; |
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|
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sub open_db { |
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use strict; |
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|
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mkdir $DB_HOME, 0777; |
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my $recover = $BerkeleyDB::db_version >= 4.4 |
| 284 |
? eval "DB_REGISTER | DB_RECOVER" |
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: 0; |
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|
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$DB_ENV = new BerkeleyDB::Env |
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-Home => $DB_HOME, |
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-Cachesize => 1_000_000, |
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-ErrFile => "$DB_HOME/errorlog.txt", |
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# -ErrPrefix => "DATABASE", |
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-Verbose => 1, |
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-Flags => DB_CREATE | DB_RECOVER | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_TXN | $recover, |
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-SetFlags => DB_AUTO_COMMIT | DB_LOG_AUTOREMOVE, |
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or die "unable to create/open database home $DB_HOME: $BerkeleyDB::Error"; |
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|
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$DB_STATE = db_table "state"; |
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|
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1 |
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} |
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|
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unless (eval { open_db }) { |
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File::Path::rmtree $DB_HOME; |
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open_db; |
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} |
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|
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package CFPlus::Layout; |
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|
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$CFPlus::OpenGL::SHUTDOWN_HOOK{"CFPlus::Layout"} = sub { |
| 310 |
reset_glyph_cache; |
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}; |
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|
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1; |
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|
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=back |
| 316 |
|
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=head1 AUTHOR |
| 318 |
|
| 319 |
Marc Lehmann <schmorp@schmorp.de> |
| 320 |
http://home.schmorp.de/ |
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|
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=cut |
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|
