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=head1 NAME |
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DC - undocumented utility garbage for our deliantra client |
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=head1 SYNOPSIS |
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use DC; |
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=head1 DESCRIPTION |
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=over 4 |
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=cut |
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package Deliantra::Client; # work around CPAN breakage |
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package App::Deliantra; # try to reserve namespace |
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package DC; |
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use Carp (); |
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our $VERSION; |
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BEGIN { |
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$VERSION = '0.9975'; |
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use XSLoader; |
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XSLoader::load "Deliantra::Client", $VERSION; |
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} |
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use utf8; |
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use strict qw(vars subs); |
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use AnyEvent (); |
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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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use Fcntl (); |
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use JSON::XS qw(encode_json decode_json); |
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=item guard { BLOCK } |
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Returns an object that executes the given block as soon as it is destroyed. |
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=cut |
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sub guard(&) { |
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bless \(my $cb = $_[0]), "DC::Guard" |
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} |
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sub DC::Guard::DESTROY { |
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${$_[0]}->() |
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} |
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=item shorten $string[, $maxlength] |
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=cut |
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sub shorten($;$) { |
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my ($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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sub asxml($) { |
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local $_ = $_[0]; |
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s/&/&/g; |
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s/>/>/g; |
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s/</</g; |
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$_ |
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} |
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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 bidirectional pipe: $!\n"; |
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($fh1, $fh2) |
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} |
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sub background(&;&) { |
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my ($bg, $cb) = @_; |
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my ($fh_r, $fh_w) = DC::socketpipe; |
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my $pid = fork; |
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if (defined $pid && !$pid) { |
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local $SIG{__DIE__}; |
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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 $fh_w; |
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$| = 1; |
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eval { $bg->() }; |
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if ($@) { |
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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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DC::_exit 1; |
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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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DC::_exit 0; |
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} |
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close $fh_w; |
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my $buffer; |
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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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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->(JSON::XS->new->allow_nonref->decode ($1)); |
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} else { |
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::message ({ |
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markup => "background($pid): " . DC::asxml $line, |
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}); |
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} |
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} |
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}); |
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} |
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sub background_msg { |
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my ($msg) = @_; |
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$msg = "\x{e877}json_msg " . JSON::XS->new->allow_nonref->encode ($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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package DC; |
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our $RC_THEME = "theme-metal"; |
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our $RC_BASE; |
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for (grep !ref, @INC) { |
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$RC_BASE = "$_/Deliantra/Client/private/resources"; |
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last if -d $RC_BASE; |
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} |
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sub find_rcfile($) { |
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my $path; |
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$path = "$RC_BASE/$RC_THEME/$_[0]"; |
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return $path if -r $path; |
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$path = "$RC_BASE/$_[0]"; |
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return $path if -r $path; |
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die "FATAL: can't find required file \"$_[0]\" in \"$RC_BASE\"\n"; |
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} |
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sub read_cfg { |
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my ($file) = @_; |
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open my $fh, $file |
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or return; |
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local $/; |
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my $CFG = <$fh>; |
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$::CFG = decode_json $CFG; |
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} |
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sub write_cfg { |
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my $file = "$Deliantra::VARDIR/client.cf"; |
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$::CFG->{VERSION} = $::VERSION; |
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open my $fh, ">:utf8", $file |
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or return; |
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print $fh JSON::XS->new->utf8->pretty->encode ($::CFG); |
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} |
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sub http_proxy { |
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my @proxy = win32_proxy_info; |
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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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sub set_proxy { |
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my $proxy = http_proxy |
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or return; |
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$ENV{http_proxy} = $proxy; |
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} |
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sub lwp_useragent { |
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require LWP::UserAgent; |
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DC::set_proxy; |
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my $ua = LWP::UserAgent->new ( |
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agent => "deliantra $VERSION", |
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keep_alive => 1, |
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env_proxy => 1, |
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timeout => 30, |
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); |
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} |
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sub lwp_check($) { |
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my ($res) = @_; |
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$res->is_error |
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and die $res->status_line; |
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$res |
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} |
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sub fh_nonblocking($$) { |
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my ($fh, $nb) = @_; |
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if ($^O eq "MSWin32") { |
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$nb = (! ! $nb) + 0; |
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ioctl $fh, 0x8004667e, \$nb; # FIONBIO |
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} else { |
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fcntl $fh, &Fcntl::F_SETFL, $nb ? &Fcntl::O_NONBLOCK : 0; |
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} |
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} |
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package DC::Layout; |
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$DC::OpenGL::INIT_HOOK{"DC::Layout"} = sub { |
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glyph_cache_restore; |
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}; |
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$DC::OpenGL::SHUTDOWN_HOOK{"DC::Layout"} = sub { |
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glyph_cache_backup; |
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}; |
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1; |
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=back |
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=head1 AUTHOR |
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Marc Lehmann <schmorp@schmorp.de> |
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http://home.schmorp.de/ |
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=cut |
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