| 1 |
=head1 NAME |
| 2 |
|
| 3 |
Mozilla::Plugin - embed perl into mozilla/netscape. |
| 4 |
|
| 5 |
=head1 SYNOPSIS |
| 6 |
|
| 7 |
use Mozilla::Plugin; |
| 8 |
|
| 9 |
=head1 DESCRIPTION |
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|
| 11 |
sorry... |
| 12 |
|
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=over 4 |
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|
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=cut |
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|
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package Mozilla::Plugin; |
| 18 |
|
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use base Exporter; |
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use Storable; |
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#use XSLoader; |
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|
| 23 |
$VERSION = 0.01; |
| 24 |
@EXPORT = qw(); |
| 25 |
|
| 26 |
#XSLoader::load __PACKAGE__, $VERSION; |
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|
| 28 |
my $interface; # Mozilla::Plugin::xxx (design weakness) |
| 29 |
|
| 30 |
sub NP_VERSION_MAJOR (){ 0 } |
| 31 |
sub NP_VERSION_MINOR (){ 9 } |
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sub NP_EMBED (){ 1 } |
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sub NP_FULL (){ 2 } |
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sub NP_NORMAL (){ 1 } |
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sub NP_SEEK (){ 2 } |
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sub NP_ASFILE (){ 3 } |
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sub NP_ASFILEONLY (){ 4 } |
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sub NP_MAXREADY (){ 2147483647 } |
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sub NPERR_NO_ERROR (){ 0 } |
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sub NPERR_GENERIC_ERROR (){ 1 } |
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sub NPERR_INVALID_INSTANCE_ERROR (){ 2 } |
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sub NPERR_INVALID_FUNCTABLE_ERROR (){ 3 } |
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sub NPERR_MODULE_LOAD_FAILED_ERROR (){ 4 } |
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sub NPERR_OUT_OF_MEMORY_ERROR (){ 5 } |
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sub NPERR_INVALID_PLUGIN_ERROR (){ 6 } |
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sub NPERR_INVALID_PLUGIN_DIR_ERROR (){ 7 } |
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sub NPERR_INCOMPATIBLE_VERSION_ERROR (){ 8 } |
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sub NPERR_INVALID_PARAM (){ 9 } |
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sub NPERR_INVALID_URL (){ 10 } |
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sub NPERR_FILE_NOT_FOUND (){ 11 } |
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sub NPERR_NO_DATA (){ 12 } |
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sub NPERR_STREAM_NOT_SEEKABLE (){ 13 } |
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sub NPVERS_HAS_STREAMOUTPUT (){ 8 } |
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sub NPVERS_HAS_NOTIFICATION (){ 9 } |
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sub NPVERS_HAS_LIVECONNECT (){ 9 } |
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sub NPVERS_WIN16_HAS_LIVECONNECT (){ 10 } |
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|
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my $data; |
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|
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sub BIAS() { -2147483647 } # ugliest hack ever seen |
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|
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sub snd_cmd { |
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$data = pack "NN", 0, ord($_[-1]); |
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} |
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|
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sub snd_ptr { |
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$data .= $_[-1]; |
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} |
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|
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sub snd_u32 { |
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$data .= pack "N", $_[-1]; |
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} |
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|
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sub snd_i32 { |
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$data .= pack "N", $_[-1] - BIAS; |
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} |
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|
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sub snd_blk { |
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$data .= pack "NA*", length($_[-1]), $_[-1]; |
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} |
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|
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sub snd_snd { |
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substr ($data, 0, 4) = pack "N", length $data; |
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length ($data) == syswrite FD, $data; |
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} |
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|
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sub snd_dyn { |
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length ($_[-1]) == syswrite FD, $_[-1]; |
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} |
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|
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sub rcv_cmd { |
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my $buf; |
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4 == sysread FD, $buf, 4 or exit; |
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my $len = unpack "N", $buf; |
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$len -= 4; |
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$len == sysread FD, $buf, $len or die; |
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|
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$data = substr $buf, 4; |
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|
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substr $buf, 3, 1; |
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} |
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|
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sub rcv_ptr { |
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my $ptr = substr $data, 0, 8; |
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$data = substr $data, 8; |
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printf "RCV_PTR(%s)\n", unpack "H*", $ptr; |
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$ptr; |
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} |
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|
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sub rcv_u32 { |
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my $u32 = unpack "N", $data; |
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$data = substr $data, 4; |
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$u32; |
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} |
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|
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sub rcv_i32 { |
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my $i32 = BIAS + unpack "N", $data; |
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$data = substr $data, 4; |
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$i32; |
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} |
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|
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sub rcv_blk { |
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my $len = unpack "N", $data; |
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my $str = substr $data, 4, $len; |
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$data = substr $data, 4 + $len; |
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$str; |
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} |
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|
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sub rcv_dyn { |
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my $buf; |
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$_[-1] == sysread FD, $buf, $_[-1] or die "rcv_dyn: $!"; |
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$buf; |
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} |
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|
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=item my $fh = server_fh |
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|
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The design of this module is event-based. When the plug-in starts (there |
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is always just one interpreter) it spawns one perl interpreter which |
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will immediately go into a even loop. If you want to use your own event |
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loop (e.g. using the Gtk or Event modules) you need to register a file |
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input handler on the filehandle returned by C<server_fh> that calls |
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C<server_event> whenever there is input pending on C<server_fh>. This will |
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ensure proper operation of the plug-in. |
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|
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=item server_event |
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|
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Call this function whenever there is data available on the C<server_fh>. This function |
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might not return. |
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|
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Due to this design (flaw?), sharing of different toolkits using this |
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plug-in is difficult at best. Spawning a new perl interpreter for every |
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plug-in is also not very viable, so in the future one might be able to |
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specify a group on the embed statement (i.e. EMBED GROUP="gtk+"). |
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|
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=cut |
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|
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sub server_fh() { \*FD } |
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|
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sub server_event() { |
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my $cmd = rcv_cmd; |
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|
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warn "cmd<$cmd>\n";#d# |
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|
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if ($cmd eq "I") { |
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rcv_u32 == 1 or die "protocol version mismatch\n"; |
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($IFACE, $OSNAME, $OSVERS) = (rcv_blk, rcv_blk, rcv_blk); |
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|
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} elsif ($cmd eq "+") { # New |
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my ($objid, $type, $mode, $save, $argc) |
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= (rcv_ptr, rcv_blk, rcv_u32, rcv_blk, rcv_u32); |
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my %args; |
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while ($argc--) { |
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my ($argn, $argv) = (rcv_blk, rcv_blk); |
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$args{$argn} = $argv; |
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} |
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|
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$_OBJ{$objid} = $interface->new( |
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instance => $objid, |
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type => $type, |
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mode => $mode, |
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save => $save, |
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args => \%args, |
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); |
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|
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} elsif ($cmd eq "-") { # Destroy |
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my $objid = rcv_ptr; |
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my $save = (delete $_OBJ{$objid})->save; |
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snd_cmd "-"; |
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snd_u32 length $save; |
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snd_snd and snd_dyn $save; |
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|
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} elsif ($cmd eq "X") { # SetWindow |
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my $objid = rcv_ptr; |
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my %args = ( |
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id => rcv_ptr, |
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x => rcv_i32, |
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y => rcv_i32, |
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w => rcv_i32, |
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h => rcv_i32, |
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); |
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if ($IFACE eq "UNIX") { |
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$args{id} = unpack "xxxxN", $args{id}; |
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$args{ws_type} = rcv_i32; |
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$args{ws_depth} = rcv_u32; |
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} |
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|
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snd_cmd 'X'; |
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snd_u32 $_OBJ{$objid}->set_window(\%args); |
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snd_snd; |
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|
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} elsif ($cmd eq "N") { # NewStream |
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my $obj = $_OBJ{+rcv_ptr}; |
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my %args = ( |
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instance => $obj, |
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mimetype => rcv_blk, |
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id => rcv_ptr, |
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url => rcv_blk, |
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end => rcv_u32, |
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lastmodified => rcv_u32, |
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notifydata => rcv_u32, |
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seekable => rcv_u32, |
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push_stream => 1, |
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); |
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my $str = $_OBJ{$args{id}} = new Mozilla::Stream \%args; |
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|
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my ($stype, $err) = $obj->push_stream($str); |
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|
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snd_cmd 'N'; |
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snd_u32 $err; |
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snd_u32 $stype || NP_NORMAL; |
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snd_snd; |
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|
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} elsif ($cmd eq "/") { # StreamAsFile |
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my $obj = $_OBJ{+rcv_ptr}; |
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my $str = $_OBJ{+rcv_ptr}; |
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my $path = rcv_blk; |
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|
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$obj->stream_as_file($obj, $stream, $path); |
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|
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} elsif ($cmd eq "R") { # WriteReady |
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my $obj = $_OBJ{+rcv_ptr}; |
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my $str = $_OBJ{+rcv_ptr}; |
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|
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snd_cmd 'R'; |
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snd_u32 $obj->write_ready($obj, $str); |
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snd_snd; |
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|
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} elsif ($cmd eq "W") { # Write |
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my $obj = $_OBJ{+rcv_ptr}; |
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my $str = $_OBJ{+rcv_ptr}; |
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my $ofs = rcv_i32; |
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my $len = rcv_i32; |
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my $dta = rcv_dyn $len; |
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|
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snd_cmd 'W'; |
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snd_i32 $obj->write($str, $ofs, $len, $dta); |
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snd_snd; |
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|
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} elsif ($cmd eq "D") { # DestroyStream |
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my $obj = $_OBJ{+rcv_ptr}; |
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my $str = delete $_OBJ{+rcv_ptr}; |
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my $why = rcv_u32; |
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|
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$obj->destroy_stream($obj, $str, $why); |
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|
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} else { |
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die "unknown command '$cmd' received"; |
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} |
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} |
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|
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sub mainloop { |
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server_event while 1; |
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} |
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|
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sub init { |
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$interface = shift; |
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|
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open FD, "+<&=$_[0]"; binmode FD; |
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|
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$interface->mainloop; |
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} |
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|
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sub new { |
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my $class = shift; |
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my $self = bless { @_ }, $class; |
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$self->{save} = $self->{save} ne "" |
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? Storable::thaw $self->{save} |
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: {}; |
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$self; |
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} |
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|
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sub set_window { |
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my $self = shift; |
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my $new = shift; |
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|
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if ($self->{wininfo}) { |
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if ($self->{wininfo}{id} ne $new->{id}) { |
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$self->window_delete($self->{wininfo}); |
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} elsif ($self->{wininfo}{w} != $new->{w} |
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or $self->{wininfo}{h} != $new->{h}) { |
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$self->window_resize($new->{id}, $new->{w}, $new->{h}); |
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} |
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$self->{wininfo} = $new; |
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} |
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|
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unless ($self->{wininfo}) { |
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$self->{window} = $self->window_new($new) and $self->{wininfo} = $new; |
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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 window_new {} |
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sub window_resize {} |
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|
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sub window_delete { |
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my $self = shift; |
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delete $self->{wininfo}; |
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delete $self->{window}; |
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} |
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|
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sub save { |
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my $self = shift; |
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$self->set_window(undef); |
| 325 |
$self->{destroy}; |
| 326 |
Storable::nfreeze $self->{save}; |
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} |
| 328 |
|
| 329 |
sub destroy {} |
| 330 |
sub DESTROY {} |
| 331 |
sub write_ready { 0xfffff } |
| 332 |
sub push_stream {} |
| 333 |
sub stream_as_file {} |
| 334 |
sub destroy_stream {} |
| 335 |
|
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sub write { |
| 337 |
my ($self) = shift; |
| 338 |
shift->write(@_); |
| 339 |
} |
| 340 |
|
| 341 |
package Mozilla::Stream; |
| 342 |
|
| 343 |
sub new { |
| 344 |
bless $_[1], $_[0]; |
| 345 |
} |
| 346 |
|
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sub write { |
| 348 |
# ... |
| 349 |
} |
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|
| 351 |
sub DESTROY { |
| 352 |
my $str = $_[0]; |
| 353 |
warn "DESTROY stream"; |
| 354 |
|
| 355 |
my $obj = $str->{instance}; |
| 356 |
$obj->snd_cmd('d'); |
| 357 |
$obj->snd_ptr($obj); |
| 358 |
$obj->snd_ptr($str); |
| 359 |
$obj->snd_snd; |
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} |
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|
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1; |
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|
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=back |
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|
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=head1 BUGS |
| 367 |
|
| 368 |
=head1 SEE ALSO |
| 369 |
|
| 370 |
L<PApp>. |
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|
| 372 |
=head1 AUTHOR |
| 373 |
|
| 374 |
Marc Lehmann <pcg@goof.com> |
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http://www.goof.com/pcg/marc/ |
| 376 |
|
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=cut |
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|
