| 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 |
| 10 |
|
| 11 |
sorry... |
| 12 |
|
| 13 |
=over 4 |
| 14 |
|
| 15 |
=cut |
| 16 |
|
| 17 |
package Mozilla::Plugin; |
| 18 |
|
| 19 |
use base Exporter; |
| 20 |
use Storable; |
| 21 |
#use XSLoader; |
| 22 |
|
| 23 |
$VERSION = 0.01; |
| 24 |
@EXPORT = qw(); |
| 25 |
|
| 26 |
#XSLoader::load __PACKAGE__, $VERSION; |
| 27 |
use Data::Dumper;#d# |
| 28 |
|
| 29 |
my $interface; # Mozilla::Plugin::xxx (design weakness) |
| 30 |
|
| 31 |
sub NP_VERSION_MAJOR (){ 0 } |
| 32 |
sub NP_VERSION_MINOR (){ 9 } |
| 33 |
sub NP_EMBED (){ 1 } |
| 34 |
sub NP_FULL (){ 2 } |
| 35 |
sub NP_NORMAL (){ 1 } |
| 36 |
sub NP_SEEK (){ 2 } |
| 37 |
sub NP_ASFILE (){ 3 } |
| 38 |
sub NP_ASFILEONLY (){ 4 } |
| 39 |
sub NP_MAXREADY (){ 2147483647 } |
| 40 |
sub NPERR_NO_ERROR (){ 0 } |
| 41 |
sub NPERR_GENERIC_ERROR (){ 1 } |
| 42 |
sub NPERR_INVALID_INSTANCE_ERROR (){ 2 } |
| 43 |
sub NPERR_INVALID_FUNCTABLE_ERROR (){ 3 } |
| 44 |
sub NPERR_MODULE_LOAD_FAILED_ERROR (){ 4 } |
| 45 |
sub NPERR_OUT_OF_MEMORY_ERROR (){ 5 } |
| 46 |
sub NPERR_INVALID_PLUGIN_ERROR (){ 6 } |
| 47 |
sub NPERR_INVALID_PLUGIN_DIR_ERROR (){ 7 } |
| 48 |
sub NPERR_INCOMPATIBLE_VERSION_ERROR (){ 8 } |
| 49 |
sub NPERR_INVALID_PARAM (){ 9 } |
| 50 |
sub NPERR_INVALID_URL (){ 10 } |
| 51 |
sub NPERR_FILE_NOT_FOUND (){ 11 } |
| 52 |
sub NPERR_NO_DATA (){ 12 } |
| 53 |
sub NPERR_STREAM_NOT_SEEKABLE (){ 13 } |
| 54 |
sub NPVERS_HAS_STREAMOUTPUT (){ 8 } |
| 55 |
sub NPVERS_HAS_NOTIFICATION (){ 9 } |
| 56 |
sub NPVERS_HAS_LIVECONNECT (){ 9 } |
| 57 |
sub NPVERS_WIN16_HAS_LIVECONNECT (){ 10 } |
| 58 |
|
| 59 |
my $data; |
| 60 |
|
| 61 |
sub BIAS() { -2147483647 } # ugliest hack ever seen |
| 62 |
|
| 63 |
sub snd_cmd($) { |
| 64 |
$data = pack "NN", 0, ord($_[0]); |
| 65 |
} |
| 66 |
|
| 67 |
sub snd_ptr($) { |
| 68 |
$data .= $_[0]; |
| 69 |
} |
| 70 |
|
| 71 |
sub snd_u32($) { |
| 72 |
$data .= pack "N", $_[0]; |
| 73 |
} |
| 74 |
|
| 75 |
sub snd_i32($) { |
| 76 |
$data .= pack "N", $_[0] - BIAS; |
| 77 |
} |
| 78 |
|
| 79 |
sub snd_blk($) { |
| 80 |
$data .= pack "NA*", length($_[0]), $_[0]; |
| 81 |
} |
| 82 |
|
| 83 |
sub snd_snd() { |
| 84 |
substr ($data, 0, 4) = pack "N", length $data; |
| 85 |
length ($data) == syswrite FD, $data; |
| 86 |
} |
| 87 |
|
| 88 |
sub snd_dyn($) { |
| 89 |
length ($_[0]) == syswrite FD, $_[0]; |
| 90 |
} |
| 91 |
|
| 92 |
sub rcv_cmd() { |
| 93 |
my $buf; |
| 94 |
4 == sysread FD, $buf, 4 or exit; |
| 95 |
my $len = unpack "N", $buf; |
| 96 |
$len -= 4; |
| 97 |
$len == sysread FD, $buf, $len or die; |
| 98 |
|
| 99 |
$data = substr $buf, 4; |
| 100 |
|
| 101 |
substr $buf, 3, 1; |
| 102 |
} |
| 103 |
|
| 104 |
sub rcv_ptr() { |
| 105 |
my $ptr = substr $data, 0, 8; |
| 106 |
$data = substr $data, 8; |
| 107 |
$ptr; |
| 108 |
} |
| 109 |
|
| 110 |
sub rcv_u32() { |
| 111 |
my $u32 = unpack "N", $data; |
| 112 |
$data = substr $data, 4; |
| 113 |
$u32; |
| 114 |
} |
| 115 |
|
| 116 |
sub rcv_i32() { |
| 117 |
my $i32 = BIAS + unpack "N", $data; |
| 118 |
$data = substr $data, 4; |
| 119 |
$i32; |
| 120 |
} |
| 121 |
|
| 122 |
sub rcv_blk() { |
| 123 |
my $len = unpack "N", $data; |
| 124 |
my $str = substr $data, 4, $len; |
| 125 |
$data = substr $data, 4 + $len; |
| 126 |
$str; |
| 127 |
} |
| 128 |
|
| 129 |
=item my $fh = server_fh |
| 130 |
|
| 131 |
The design of this module is event-based. When the plug-in starts (there |
| 132 |
is always just one interpreter) it spawns one perl interpreter which |
| 133 |
will immediately go into a even loop. If you want to use your own event |
| 134 |
loop (e.g. using the Gtk or Event modules) you need to register a file |
| 135 |
input handler on the filehandle returned by C<server_fh> that calls |
| 136 |
C<server_event> whenever there is input pending on C<server_fh>. This will |
| 137 |
ensure proper operation of the plug-in. |
| 138 |
|
| 139 |
=item server_event |
| 140 |
|
| 141 |
Call this function whenever there is data available on the C<server_fh>. This function |
| 142 |
might not return. |
| 143 |
|
| 144 |
Due to this design (flaw?), sharing of different toolkits using this |
| 145 |
plug-in is difficult at best. Spawning a new perl interpreter for every |
| 146 |
plug-in is also not very viable, so in the future one might be able to |
| 147 |
specify a group on the embed statement (i.e. EMBED GROUP="gtk+"). |
| 148 |
|
| 149 |
=cut |
| 150 |
|
| 151 |
sub server_fh() { \*FD } |
| 152 |
|
| 153 |
sub server_event() { |
| 154 |
my $cmd = rcv_cmd; |
| 155 |
|
| 156 |
warn "cmd<$cmd>\n";#d# |
| 157 |
|
| 158 |
if ($cmd eq "I") { |
| 159 |
rcv_u32 == 1 or die "protocol version mismatch\n"; |
| 160 |
($IFACE, $OSNAME, $OSVERS) = (rcv_blk, rcv_blk, rcv_blk); |
| 161 |
|
| 162 |
} elsif ($cmd eq "+") { # New |
| 163 |
my ($objid, $type, $mode, $save, $argc) |
| 164 |
= (rcv_ptr, rcv_blk, rcv_u32, rcv_blk, rcv_u32); |
| 165 |
my %args; |
| 166 |
while ($argc--) { |
| 167 |
my ($argn, $argv) = (rcv_blk, rcv_blk); |
| 168 |
$args{$argn} = $argv; |
| 169 |
} |
| 170 |
|
| 171 |
$_OBJ{$objid} = $interface->new( |
| 172 |
objid => $objid, |
| 173 |
type => $type, |
| 174 |
mode => $mode, |
| 175 |
save => $save, |
| 176 |
args => \%args, |
| 177 |
); |
| 178 |
|
| 179 |
} elsif ($cmd eq "-") { # Destroy |
| 180 |
my $objid = rcv_ptr; |
| 181 |
my $save = (delete $_OBJ{$objid})->save; |
| 182 |
snd_cmd "-"; |
| 183 |
snd_u32 length $save; |
| 184 |
snd_snd and snd_dyn $save; |
| 185 |
|
| 186 |
} elsif ($cmd eq "X") { # SetWindow |
| 187 |
my $objid = rcv_ptr; |
| 188 |
my %args = ( |
| 189 |
window => rcv_ptr, |
| 190 |
x => rcv_i32, |
| 191 |
y => rcv_i32, |
| 192 |
w => rcv_i32, |
| 193 |
h => rcv_i32, |
| 194 |
); |
| 195 |
if ($IFACE eq "UNIX") { |
| 196 |
$args{window} = unpack "xxxxN", $args{window}; |
| 197 |
$args{ws_type} = rcv_i32; |
| 198 |
$args{ws_depth} = rcv_u32; |
| 199 |
} |
| 200 |
|
| 201 |
snd_cmd 'X'; |
| 202 |
snd_u32 $_OBJ{$objid}->set_window(\%args); |
| 203 |
snd_snd; |
| 204 |
|
| 205 |
} elsif ($cmd eq "N") { # NewStream |
| 206 |
my $obj = $_OBJ{+rcv_ptr}; |
| 207 |
my %args = ( |
| 208 |
obj => $obj, |
| 209 |
mimetype => rcv_blk, |
| 210 |
id => rcv_ptr, |
| 211 |
url => rcv_blk, |
| 212 |
end => rcv_u32, |
| 213 |
lastmodified => rcv_u32, |
| 214 |
notifydata => rcv_u32, |
| 215 |
seekable => rcv_u32, |
| 216 |
); |
| 217 |
my $str = $_OBJ{$args{id}} = new Mozilla::Stream \%args; |
| 218 |
|
| 219 |
my ($stype, $err) = $obj->push_stream($str); |
| 220 |
|
| 221 |
snd_cmd 'W'; |
| 222 |
snd_u32 $err; |
| 223 |
snd_u32 $stype || NP_NORMAL; |
| 224 |
snd_snd; |
| 225 |
|
| 226 |
} elsif ($cmd eq "/") { # StreamAsFile |
| 227 |
my $obj = $_OBJ{+rcv_ptr}; |
| 228 |
my $str = $_OBJ{+rcv_ptr}; |
| 229 |
my $path = rcv_blk; |
| 230 |
|
| 231 |
$obj->stream_as_file($obj, $stream, $path); |
| 232 |
|
| 233 |
} elsif ($cmd eq "R") { # WriteReady |
| 234 |
my $obj = $_OBJ{+rcv_ptr}; |
| 235 |
my $str = $_OBJ{+rcv_ptr}; |
| 236 |
|
| 237 |
snd_cmd 'R'; |
| 238 |
snd_u32 $obj->write_ready($obj, $str); |
| 239 |
snd_snd; |
| 240 |
|
| 241 |
} elsif ($cmd eq "W") { # Write |
| 242 |
my $obj = $_OBJ{+rcv_ptr}; |
| 243 |
my $str = $_OBJ{+rcv_ptr}; |
| 244 |
my $ofs = rcv_i32; |
| 245 |
my $len = rcv_i32; |
| 246 |
my $dta = rcv_dyn $len; |
| 247 |
|
| 248 |
snd_cmd 'W'; |
| 249 |
snd_i32 $obj->write($str, $ofs, $len, $dta); |
| 250 |
snd_snd; |
| 251 |
|
| 252 |
} elsif ($cmd eq "D") { # DestroyStream |
| 253 |
my $obj = $_OBJ{+rcv_ptr}; |
| 254 |
my $str = delete $_OBJ{+rcv_ptr}; |
| 255 |
my $why = rcv_u32; |
| 256 |
|
| 257 |
$obj->destroy_stream($obj, $str, $why); |
| 258 |
|
| 259 |
} else { |
| 260 |
die "unknown command '$cmd' received"; |
| 261 |
} |
| 262 |
} |
| 263 |
|
| 264 |
sub mainloop { |
| 265 |
server_event while 1; |
| 266 |
} |
| 267 |
|
| 268 |
sub init { |
| 269 |
$interface = shift; |
| 270 |
|
| 271 |
open FD, "+<&=$_[0]"; binmode FD; |
| 272 |
|
| 273 |
$interface->mainloop; |
| 274 |
} |
| 275 |
|
| 276 |
sub new { |
| 277 |
my $class = shift; |
| 278 |
my $self = bless { @_ }, $class; |
| 279 |
$self->{save} = $self->{save} ne "" |
| 280 |
? Storable::thaw $self->{save} |
| 281 |
: {}; |
| 282 |
$self; |
| 283 |
} |
| 284 |
|
| 285 |
sub set_window { |
| 286 |
my $self = shift; |
| 287 |
my $new = shift; |
| 288 |
print "window set calling with $new->{window}, $new->{w}, $new->{h} ($self->{window}\n";#d# |
| 289 |
if ($self->{window}) { |
| 290 |
if ($self->{window}{window} ne $new->{window}) { |
| 291 |
$self->window_delete($self->{window}); |
| 292 |
} elsif ($self->{window}{w} != $new->{w} |
| 293 |
or $self->{window}{h} != $new->{h}) { |
| 294 |
$self->window_resize($new->{window}, $new->{w}, $new->{h}); |
| 295 |
} |
| 296 |
$self->{window} = $new; |
| 297 |
} |
| 298 |
|
| 299 |
unless ($self->{window}) { |
| 300 |
$self->{window} = $new; |
| 301 |
print "window new calling with $new->{window}, $new->{w}, $new->{h}\n";#d# |
| 302 |
$self->window_new($new->{window}, $new->{w}, $new->{h}); |
| 303 |
} |
| 304 |
|
| 305 |
(); |
| 306 |
} |
| 307 |
|
| 308 |
sub window_new {} |
| 309 |
sub window_resize {} |
| 310 |
|
| 311 |
sub window_delete { |
| 312 |
my $self = shift; |
| 313 |
delete $self->{window}; |
| 314 |
} |
| 315 |
|
| 316 |
sub save { |
| 317 |
my $self = shift; |
| 318 |
$self->set_window(undef); |
| 319 |
$self->{destroy}; |
| 320 |
Storable::nfreeze $self->{save}; |
| 321 |
} |
| 322 |
|
| 323 |
sub destroy {} |
| 324 |
sub DESTROY {} |
| 325 |
sub write_ready { 0xfffff } |
| 326 |
sub push_stream {} |
| 327 |
sub stream_as_file {} |
| 328 |
sub destroy_stream {} |
| 329 |
|
| 330 |
sub write { |
| 331 |
my ($self) = shift; |
| 332 |
shift->write(@_); |
| 333 |
} |
| 334 |
|
| 335 |
1; |
| 336 |
|
| 337 |
=back |
| 338 |
|
| 339 |
=head1 BUGS |
| 340 |
|
| 341 |
=head1 SEE ALSO |
| 342 |
|
| 343 |
L<PApp>. |
| 344 |
|
| 345 |
=head1 AUTHOR |
| 346 |
|
| 347 |
Marc Lehmann <pcg@goof.com> |
| 348 |
http://www.goof.com/pcg/marc/ |
| 349 |
|
| 350 |
=cut |
| 351 |
|
