… | |
… | |
2 | |
2 | |
3 | no warnings; |
3 | no warnings; |
4 | use strict; |
4 | use strict; |
5 | |
5 | |
6 | use AnyEvent (); |
6 | use AnyEvent (); |
7 | use AnyEvent::Util (); |
7 | use AnyEvent::Util qw(WSAWOULDBLOCK); |
8 | use Scalar::Util (); |
8 | use Scalar::Util (); |
9 | use Carp (); |
9 | use Carp (); |
10 | use Fcntl (); |
10 | use Fcntl (); |
11 | use Errno qw/EAGAIN EINTR/; |
11 | use Errno qw/EAGAIN EINTR/; |
12 | |
12 | |
13 | =head1 NAME |
13 | =head1 NAME |
14 | |
14 | |
15 | AnyEvent::Handle - non-blocking I/O on filehandles via AnyEvent |
15 | AnyEvent::Handle - non-blocking I/O on file handles via AnyEvent |
16 | |
|
|
17 | This module is experimental. |
|
|
18 | |
16 | |
19 | =cut |
17 | =cut |
20 | |
18 | |
21 | our $VERSION = '0.04'; |
19 | our $VERSION = '0.04'; |
22 | |
20 | |
… | |
… | |
25 | use AnyEvent; |
23 | use AnyEvent; |
26 | use AnyEvent::Handle; |
24 | use AnyEvent::Handle; |
27 | |
25 | |
28 | my $cv = AnyEvent->condvar; |
26 | my $cv = AnyEvent->condvar; |
29 | |
27 | |
30 | my $ae_fh = AnyEvent::Handle->new (fh => \*STDIN); |
28 | my $handle = |
31 | |
|
|
32 | #TODO |
|
|
33 | |
|
|
34 | # or use the constructor to pass the callback: |
|
|
35 | |
|
|
36 | my $ae_fh2 = |
|
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37 | AnyEvent::Handle->new ( |
29 | AnyEvent::Handle->new ( |
38 | fh => \*STDIN, |
30 | fh => \*STDIN, |
39 | on_eof => sub { |
31 | on_eof => sub { |
40 | $cv->broadcast; |
32 | $cv->broadcast; |
41 | }, |
33 | }, |
42 | #TODO |
|
|
43 | ); |
34 | ); |
44 | |
35 | |
45 | $cv->wait; |
36 | # send some request line |
|
|
37 | $handle->push_write ("getinfo\015\012"); |
|
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38 | |
|
|
39 | # read the response line |
|
|
40 | $handle->push_read (line => sub { |
|
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41 | my ($handle, $line) = @_; |
|
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42 | warn "read line <$line>\n"; |
|
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43 | $cv->send; |
|
|
44 | }); |
|
|
45 | |
|
|
46 | $cv->recv; |
46 | |
47 | |
47 | =head1 DESCRIPTION |
48 | =head1 DESCRIPTION |
48 | |
49 | |
49 | This module is a helper module to make it easier to do event-based I/O on |
50 | This module is a helper module to make it easier to do event-based I/O on |
50 | filehandles. For utility functions for doing non-blocking connects and accepts |
51 | filehandles. For utility functions for doing non-blocking connects and accepts |
… | |
… | |
90 | |
91 | |
91 | The object will not be in a usable state when this callback has been |
92 | The object will not be in a usable state when this callback has been |
92 | called. |
93 | called. |
93 | |
94 | |
94 | On callback entrance, the value of C<$!> contains the operating system |
95 | On callback entrance, the value of C<$!> contains the operating system |
95 | error (or C<ENOSPC> or C<EPIPE>). |
96 | error (or C<ENOSPC>, C<EPIPE> or C<EBADMSG>). |
96 | |
97 | |
97 | While not mandatory, it is I<highly> recommended to set this callback, as |
98 | While not mandatory, it is I<highly> recommended to set this callback, as |
98 | you will not be notified of errors otherwise. The default simply calls |
99 | you will not be notified of errors otherwise. The default simply calls |
99 | die. |
100 | die. |
100 | |
101 | |
… | |
… | |
145 | |
146 | |
146 | When this parameter is given, it enables TLS (SSL) mode, that means it |
147 | When this parameter is given, it enables TLS (SSL) mode, that means it |
147 | will start making tls handshake and will transparently encrypt/decrypt |
148 | will start making tls handshake and will transparently encrypt/decrypt |
148 | data. |
149 | data. |
149 | |
150 | |
|
|
151 | TLS mode requires Net::SSLeay to be installed (it will be loaded |
|
|
152 | automatically when you try to create a TLS handle). |
|
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153 | |
150 | For the TLS server side, use C<accept>, and for the TLS client side of a |
154 | For the TLS server side, use C<accept>, and for the TLS client side of a |
151 | connection, use C<connect> mode. |
155 | connection, use C<connect> mode. |
152 | |
156 | |
153 | You can also provide your own TLS connection object, but you have |
157 | You can also provide your own TLS connection object, but you have |
154 | to make sure that you call either C<Net::SSLeay::set_connect_state> |
158 | to make sure that you call either C<Net::SSLeay::set_connect_state> |
155 | or C<Net::SSLeay::set_accept_state> on it before you pass it to |
159 | or C<Net::SSLeay::set_accept_state> on it before you pass it to |
156 | AnyEvent::Handle. |
160 | AnyEvent::Handle. |
157 | |
161 | |
|
|
162 | See the C<starttls> method if you need to start TLs negotiation later. |
|
|
163 | |
158 | =item tls_ctx => $ssl_ctx |
164 | =item tls_ctx => $ssl_ctx |
159 | |
165 | |
160 | Use the given Net::SSLeay::CTX object to create the new TLS connection |
166 | Use the given Net::SSLeay::CTX object to create the new TLS connection |
161 | (unless a connection object was specified directly). If this parameter is |
167 | (unless a connection object was specified directly). If this parameter is |
162 | missing, then AnyEvent::Handle will use C<AnyEvent::Handle::TLS_CTX>. |
168 | missing, then AnyEvent::Handle will use C<AnyEvent::Handle::TLS_CTX>. |
… | |
… | |
206 | } |
212 | } |
207 | |
213 | |
208 | if ($self->{on_error}) { |
214 | if ($self->{on_error}) { |
209 | $self->{on_error}($self); |
215 | $self->{on_error}($self); |
210 | } else { |
216 | } else { |
211 | die "AnyEvent::Handle uncaught fatal error: $!"; |
217 | Carp::croak "AnyEvent::Handle uncaught fatal error: $!"; |
212 | } |
218 | } |
213 | } |
219 | } |
214 | |
220 | |
215 | =item $fh = $handle->fh |
221 | =item $fh = $handle->fh |
216 | |
222 | |
217 | This method returns the filehandle of the L<AnyEvent::Handle> object. |
223 | This method returns the file handle of the L<AnyEvent::Handle> object. |
218 | |
224 | |
219 | =cut |
225 | =cut |
220 | |
226 | |
221 | sub fh { $_[0]->{fh} } |
227 | sub fh { $_[0]->{fh} } |
222 | |
228 | |
… | |
… | |
282 | =cut |
288 | =cut |
283 | |
289 | |
284 | sub _drain_wbuf { |
290 | sub _drain_wbuf { |
285 | my ($self) = @_; |
291 | my ($self) = @_; |
286 | |
292 | |
287 | unless ($self->{ww}) { |
293 | if (!$self->{ww} && length $self->{wbuf}) { |
|
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294 | |
288 | Scalar::Util::weaken $self; |
295 | Scalar::Util::weaken $self; |
|
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296 | |
289 | my $cb = sub { |
297 | my $cb = sub { |
290 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
298 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
291 | |
299 | |
292 | if ($len > 0) { |
300 | if ($len >= 0) { |
293 | substr $self->{wbuf}, 0, $len, ""; |
301 | substr $self->{wbuf}, 0, $len, ""; |
294 | |
302 | |
295 | $self->{on_drain}($self) |
303 | $self->{on_drain}($self) |
296 | if $self->{low_water_mark} >= length $self->{wbuf} |
304 | if $self->{low_water_mark} >= length $self->{wbuf} |
297 | && $self->{on_drain}; |
305 | && $self->{on_drain}; |
298 | |
306 | |
299 | delete $self->{ww} unless length $self->{wbuf}; |
307 | delete $self->{ww} unless length $self->{wbuf}; |
300 | } elsif ($! != EAGAIN && $! != EINTR) { |
308 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAWOULDBLOCK) { |
301 | $self->error; |
309 | $self->error; |
302 | } |
310 | } |
303 | }; |
311 | }; |
304 | |
312 | |
|
|
313 | # try to write data immediately |
|
|
314 | $cb->(); |
|
|
315 | |
|
|
316 | # if still data left in wbuf, we need to poll |
305 | $self->{ww} = AnyEvent->io (fh => $self->{fh}, poll => "w", cb => $cb); |
317 | $self->{ww} = AnyEvent->io (fh => $self->{fh}, poll => "w", cb => $cb) |
306 | |
318 | if length $self->{wbuf}; |
307 | $cb->($self); |
|
|
308 | }; |
319 | }; |
|
|
320 | } |
|
|
321 | |
|
|
322 | our %WH; |
|
|
323 | |
|
|
324 | sub register_write_type($$) { |
|
|
325 | $WH{$_[0]} = $_[1]; |
309 | } |
326 | } |
310 | |
327 | |
311 | sub push_write { |
328 | sub push_write { |
312 | my $self = shift; |
329 | my $self = shift; |
|
|
330 | |
|
|
331 | if (@_ > 1) { |
|
|
332 | my $type = shift; |
|
|
333 | |
|
|
334 | @_ = ($WH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_write") |
|
|
335 | ->($self, @_); |
|
|
336 | } |
313 | |
337 | |
314 | if ($self->{filter_w}) { |
338 | if ($self->{filter_w}) { |
315 | $self->{filter_w}->($self, \$_[0]); |
339 | $self->{filter_w}->($self, \$_[0]); |
316 | } else { |
340 | } else { |
317 | $self->{wbuf} .= $_[0]; |
341 | $self->{wbuf} .= $_[0]; |
318 | $self->_drain_wbuf; |
342 | $self->_drain_wbuf; |
319 | } |
343 | } |
320 | } |
344 | } |
|
|
345 | |
|
|
346 | =item $handle->push_write (type => @args) |
|
|
347 | |
|
|
348 | =item $handle->unshift_write (type => @args) |
|
|
349 | |
|
|
350 | Instead of formatting your data yourself, you can also let this module do |
|
|
351 | the job by specifying a type and type-specific arguments. |
|
|
352 | |
|
|
353 | Predefined types are (if you have ideas for additional types, feel free to |
|
|
354 | drop by and tell us): |
|
|
355 | |
|
|
356 | =over 4 |
|
|
357 | |
|
|
358 | =item netstring => $string |
|
|
359 | |
|
|
360 | Formats the given value as netstring |
|
|
361 | (http://cr.yp.to/proto/netstrings.txt, this is not a recommendation to use them). |
|
|
362 | |
|
|
363 | =back |
|
|
364 | |
|
|
365 | =cut |
|
|
366 | |
|
|
367 | register_write_type netstring => sub { |
|
|
368 | my ($self, $string) = @_; |
|
|
369 | |
|
|
370 | sprintf "%d:%s,", (length $string), $string |
|
|
371 | }; |
|
|
372 | |
|
|
373 | =item AnyEvent::Handle::register_write_type type => $coderef->($self, @args) |
|
|
374 | |
|
|
375 | This function (not method) lets you add your own types to C<push_write>. |
|
|
376 | Whenever the given C<type> is used, C<push_write> will invoke the code |
|
|
377 | reference with the handle object and the remaining arguments. |
|
|
378 | |
|
|
379 | The code reference is supposed to return a single octet string that will |
|
|
380 | be appended to the write buffer. |
|
|
381 | |
|
|
382 | Note that this is a function, and all types registered this way will be |
|
|
383 | global, so try to use unique names. |
|
|
384 | |
|
|
385 | =cut |
321 | |
386 | |
322 | ############################################################################# |
387 | ############################################################################# |
323 | |
388 | |
324 | =back |
389 | =back |
325 | |
390 | |
… | |
… | |
413 | local $self->{in_drain} = 1; |
478 | local $self->{in_drain} = 1; |
414 | |
479 | |
415 | while (my $len = length $self->{rbuf}) { |
480 | while (my $len = length $self->{rbuf}) { |
416 | no strict 'refs'; |
481 | no strict 'refs'; |
417 | if (my $cb = shift @{ $self->{queue} }) { |
482 | if (my $cb = shift @{ $self->{queue} }) { |
418 | if (!$cb->($self)) { |
483 | unless ($cb->($self)) { |
419 | if ($self->{eof}) { |
484 | if ($self->{eof}) { |
420 | # no progress can be made (not enough data and no data forthcoming) |
485 | # no progress can be made (not enough data and no data forthcoming) |
421 | $! = &Errno::EPIPE; return $self->error; |
486 | $! = &Errno::EPIPE; return $self->error; |
422 | } |
487 | } |
423 | |
488 | |
… | |
… | |
500 | interested in (which can be none at all) and return a true value. After returning |
565 | interested in (which can be none at all) and return a true value. After returning |
501 | true, it will be removed from the queue. |
566 | true, it will be removed from the queue. |
502 | |
567 | |
503 | =cut |
568 | =cut |
504 | |
569 | |
|
|
570 | our %RH; |
|
|
571 | |
|
|
572 | sub register_read_type($$) { |
|
|
573 | $RH{$_[0]} = $_[1]; |
|
|
574 | } |
|
|
575 | |
505 | sub push_read { |
576 | sub push_read { |
506 | my ($self, $cb) = @_; |
577 | my $self = shift; |
|
|
578 | my $cb = pop; |
|
|
579 | |
|
|
580 | if (@_) { |
|
|
581 | my $type = shift; |
|
|
582 | |
|
|
583 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
|
|
584 | ->($self, $cb, @_); |
|
|
585 | } |
507 | |
586 | |
508 | push @{ $self->{queue} }, $cb; |
587 | push @{ $self->{queue} }, $cb; |
509 | $self->_drain_rbuf; |
588 | $self->_drain_rbuf; |
510 | } |
589 | } |
511 | |
590 | |
512 | sub unshift_read { |
591 | sub unshift_read { |
513 | my ($self, $cb) = @_; |
592 | my $self = shift; |
|
|
593 | my $cb = pop; |
514 | |
594 | |
|
|
595 | if (@_) { |
|
|
596 | my $type = shift; |
|
|
597 | |
|
|
598 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::unshift_read") |
|
|
599 | ->($self, $cb, @_); |
|
|
600 | } |
|
|
601 | |
|
|
602 | |
515 | push @{ $self->{queue} }, $cb; |
603 | unshift @{ $self->{queue} }, $cb; |
516 | $self->_drain_rbuf; |
604 | $self->_drain_rbuf; |
517 | } |
605 | } |
518 | |
606 | |
519 | =item $handle->push_read_chunk ($len, $cb->($self, $data)) |
607 | =item $handle->push_read (type => @args, $cb) |
520 | |
608 | |
521 | =item $handle->unshift_read_chunk ($len, $cb->($self, $data)) |
609 | =item $handle->unshift_read (type => @args, $cb) |
522 | |
610 | |
523 | Append the given callback to the end of the queue (C<push_read_chunk>) or |
611 | Instead of providing a callback that parses the data itself you can chose |
524 | prepend it (C<unshift_read_chunk>). |
612 | between a number of predefined parsing formats, for chunks of data, lines |
|
|
613 | etc. |
525 | |
614 | |
526 | The callback will be called only once C<$len> bytes have been read, and |
615 | Predefined types are (if you have ideas for additional types, feel free to |
527 | these C<$len> bytes will be passed to the callback. |
616 | drop by and tell us): |
528 | |
617 | |
529 | =cut |
618 | =over 4 |
530 | |
619 | |
531 | sub _read_chunk($$) { |
620 | =item chunk => $octets, $cb->($self, $data) |
|
|
621 | |
|
|
622 | Invoke the callback only once C<$octets> bytes have been read. Pass the |
|
|
623 | data read to the callback. The callback will never be called with less |
|
|
624 | data. |
|
|
625 | |
|
|
626 | Example: read 2 bytes. |
|
|
627 | |
|
|
628 | $handle->push_read (chunk => 2, sub { |
|
|
629 | warn "yay ", unpack "H*", $_[1]; |
|
|
630 | }); |
|
|
631 | |
|
|
632 | =cut |
|
|
633 | |
|
|
634 | register_read_type chunk => sub { |
532 | my ($self, $len, $cb) = @_; |
635 | my ($self, $cb, $len) = @_; |
533 | |
636 | |
534 | sub { |
637 | sub { |
535 | $len <= length $_[0]{rbuf} or return; |
638 | $len <= length $_[0]{rbuf} or return; |
536 | $cb->($_[0], substr $_[0]{rbuf}, 0, $len, ""); |
639 | $cb->($_[0], substr $_[0]{rbuf}, 0, $len, ""); |
537 | 1 |
640 | 1 |
538 | } |
641 | } |
539 | } |
642 | }; |
540 | |
643 | |
|
|
644 | # compatibility with older API |
541 | sub push_read_chunk { |
645 | sub push_read_chunk { |
542 | $_[0]->push_read (&_read_chunk); |
646 | $_[0]->push_read (chunk => $_[1], $_[2]); |
543 | } |
647 | } |
544 | |
|
|
545 | |
648 | |
546 | sub unshift_read_chunk { |
649 | sub unshift_read_chunk { |
547 | $_[0]->unshift_read (&_read_chunk); |
650 | $_[0]->unshift_read (chunk => $_[1], $_[2]); |
548 | } |
651 | } |
549 | |
652 | |
550 | =item $handle->push_read_line ([$eol, ]$cb->($self, $line, $eol)) |
653 | =item line => [$eol, ]$cb->($self, $line, $eol) |
551 | |
|
|
552 | =item $handle->unshift_read_line ([$eol, ]$cb->($self, $line, $eol)) |
|
|
553 | |
|
|
554 | Append the given callback to the end of the queue (C<push_read_line>) or |
|
|
555 | prepend it (C<unshift_read_line>). |
|
|
556 | |
654 | |
557 | The callback will be called only once a full line (including the end of |
655 | The callback will be called only once a full line (including the end of |
558 | line marker, C<$eol>) has been read. This line (excluding the end of line |
656 | line marker, C<$eol>) has been read. This line (excluding the end of line |
559 | marker) will be passed to the callback as second argument (C<$line>), and |
657 | marker) will be passed to the callback as second argument (C<$line>), and |
560 | the end of line marker as the third argument (C<$eol>). |
658 | the end of line marker as the third argument (C<$eol>). |
… | |
… | |
571 | Partial lines at the end of the stream will never be returned, as they are |
669 | Partial lines at the end of the stream will never be returned, as they are |
572 | not marked by the end of line marker. |
670 | not marked by the end of line marker. |
573 | |
671 | |
574 | =cut |
672 | =cut |
575 | |
673 | |
576 | sub _read_line($$) { |
674 | register_read_type line => sub { |
577 | my $self = shift; |
675 | my ($self, $cb, $eol) = @_; |
578 | my $cb = pop; |
|
|
579 | my $eol = @_ ? shift : qr|(\015?\012)|; |
|
|
580 | my $pos; |
|
|
581 | |
676 | |
|
|
677 | $eol = qr|(\015?\012)| if @_ < 3; |
582 | $eol = quotemeta $eol unless ref $eol; |
678 | $eol = quotemeta $eol unless ref $eol; |
583 | $eol = qr|^(.*?)($eol)|s; |
679 | $eol = qr|^(.*?)($eol)|s; |
584 | |
680 | |
585 | sub { |
681 | sub { |
586 | $_[0]{rbuf} =~ s/$eol// or return; |
682 | $_[0]{rbuf} =~ s/$eol// or return; |
587 | |
683 | |
588 | $cb->($_[0], $1, $2); |
684 | $cb->($_[0], $1, $2); |
589 | 1 |
685 | 1 |
590 | } |
686 | } |
591 | } |
687 | }; |
592 | |
688 | |
|
|
689 | # compatibility with older API |
593 | sub push_read_line { |
690 | sub push_read_line { |
594 | $_[0]->push_read (&_read_line); |
691 | my $self = shift; |
|
|
692 | $self->push_read (line => @_); |
595 | } |
693 | } |
596 | |
694 | |
597 | sub unshift_read_line { |
695 | sub unshift_read_line { |
598 | $_[0]->unshift_read (&_read_line); |
696 | my $self = shift; |
|
|
697 | $self->unshift_read (line => @_); |
599 | } |
698 | } |
|
|
699 | |
|
|
700 | =item netstring => $cb->($string) |
|
|
701 | |
|
|
702 | A netstring (http://cr.yp.to/proto/netstrings.txt, this is not an endorsement). |
|
|
703 | |
|
|
704 | Throws an error with C<$!> set to EBADMSG on format violations. |
|
|
705 | |
|
|
706 | =cut |
|
|
707 | |
|
|
708 | register_read_type netstring => sub { |
|
|
709 | my ($self, $cb) = @_; |
|
|
710 | |
|
|
711 | sub { |
|
|
712 | unless ($_[0]{rbuf} =~ s/^(0|[1-9][0-9]*)://) { |
|
|
713 | if ($_[0]{rbuf} =~ /[^0-9]/) { |
|
|
714 | $! = &Errno::EBADMSG; |
|
|
715 | $self->error; |
|
|
716 | } |
|
|
717 | return; |
|
|
718 | } |
|
|
719 | |
|
|
720 | my $len = $1; |
|
|
721 | |
|
|
722 | $self->unshift_read (chunk => $len, sub { |
|
|
723 | my $string = $_[1]; |
|
|
724 | $_[0]->unshift_read (chunk => 1, sub { |
|
|
725 | if ($_[1] eq ",") { |
|
|
726 | $cb->($_[0], $string); |
|
|
727 | } else { |
|
|
728 | $! = &Errno::EBADMSG; |
|
|
729 | $self->error; |
|
|
730 | } |
|
|
731 | }); |
|
|
732 | }); |
|
|
733 | |
|
|
734 | 1 |
|
|
735 | } |
|
|
736 | }; |
|
|
737 | |
|
|
738 | =back |
|
|
739 | |
|
|
740 | =item AnyEvent::Handle::register_read_type type => $coderef->($self, $cb, @args) |
|
|
741 | |
|
|
742 | This function (not method) lets you add your own types to C<push_read>. |
|
|
743 | |
|
|
744 | Whenever the given C<type> is used, C<push_read> will invoke the code |
|
|
745 | reference with the handle object, the callback and the remaining |
|
|
746 | arguments. |
|
|
747 | |
|
|
748 | The code reference is supposed to return a callback (usually a closure) |
|
|
749 | that works as a plain read callback (see C<< ->push_read ($cb) >>). |
|
|
750 | |
|
|
751 | It should invoke the passed callback when it is done reading (remember to |
|
|
752 | pass C<$self> as first argument as all other callbacks do that). |
|
|
753 | |
|
|
754 | Note that this is a function, and all types registered this way will be |
|
|
755 | global, so try to use unique names. |
|
|
756 | |
|
|
757 | For examples, see the source of this module (F<perldoc -m AnyEvent::Handle>, |
|
|
758 | search for C<register_read_type>)). |
600 | |
759 | |
601 | =item $handle->stop_read |
760 | =item $handle->stop_read |
602 | |
761 | |
603 | =item $handle->start_read |
762 | =item $handle->start_read |
604 | |
763 | |
605 | In rare cases you actually do not want to read anything from the |
764 | In rare cases you actually do not want to read anything from the |
606 | socket. In this case you can call C<stop_read>. Neither C<on_read> no |
765 | socket. In this case you can call C<stop_read>. Neither C<on_read> no |
607 | any queued callbacks will be executed then. To start readign again, call |
766 | any queued callbacks will be executed then. To start reading again, call |
608 | C<start_read>. |
767 | C<start_read>. |
609 | |
768 | |
610 | =cut |
769 | =cut |
611 | |
770 | |
612 | sub stop_read { |
771 | sub stop_read { |
… | |
… | |
633 | } elsif (defined $len) { |
792 | } elsif (defined $len) { |
634 | delete $self->{rw}; |
793 | delete $self->{rw}; |
635 | $self->{eof} = 1; |
794 | $self->{eof} = 1; |
636 | $self->_drain_rbuf; |
795 | $self->_drain_rbuf; |
637 | |
796 | |
638 | } elsif ($! != EAGAIN && $! != EINTR) { |
797 | } elsif ($! != EAGAIN && $! != EINTR && $! != &AnyEvent::Util::WSAWOULDBLOCK) { |
639 | return $self->error; |
798 | return $self->error; |
640 | } |
799 | } |
641 | }); |
800 | }); |
642 | } |
801 | } |
643 | } |
802 | } |
644 | |
803 | |
645 | sub _dotls { |
804 | sub _dotls { |
646 | my ($self) = @_; |
805 | my ($self) = @_; |
647 | |
806 | |
648 | if (length $self->{tls_wbuf}) { |
807 | if (length $self->{tls_wbuf}) { |
649 | my $len = Net::SSLeay::write ($self->{tls}, $self->{tls_wbuf}); |
808 | while ((my $len = Net::SSLeay::write ($self->{tls}, $self->{tls_wbuf})) > 0) { |
650 | substr $self->{tls_wbuf}, 0, $len, "" if $len > 0; |
809 | substr $self->{tls_wbuf}, 0, $len, ""; |
|
|
810 | } |
651 | } |
811 | } |
652 | |
812 | |
653 | if (defined (my $buf = Net::SSLeay::BIO_read ($self->{tls_wbio}))) { |
813 | if (defined (my $buf = Net::SSLeay::BIO_read ($self->{tls_wbio}))) { |
654 | $self->{wbuf} .= $buf; |
814 | $self->{wbuf} .= $buf; |
655 | $self->_drain_wbuf; |
815 | $self->_drain_wbuf; |
656 | } |
816 | } |
657 | |
817 | |
658 | if (defined (my $buf = Net::SSLeay::read ($self->{tls}))) { |
818 | while (defined (my $buf = Net::SSLeay::read ($self->{tls}))) { |
659 | $self->{rbuf} .= $buf; |
819 | $self->{rbuf} .= $buf; |
660 | $self->_drain_rbuf; |
820 | $self->_drain_rbuf; |
661 | } elsif ( |
821 | } |
|
|
822 | |
662 | (my $err = Net::SSLeay::get_error ($self->{tls}, -1)) |
823 | my $err = Net::SSLeay::get_error ($self->{tls}, -1); |
|
|
824 | |
663 | != Net::SSLeay::ERROR_WANT_READ () |
825 | if ($err!= Net::SSLeay::ERROR_WANT_READ ()) { |
664 | ) { |
|
|
665 | if ($err == Net::SSLeay::ERROR_SYSCALL ()) { |
826 | if ($err == Net::SSLeay::ERROR_SYSCALL ()) { |
666 | $self->error; |
827 | $self->error; |
667 | } elsif ($err == Net::SSLeay::ERROR_SSL ()) { |
828 | } elsif ($err == Net::SSLeay::ERROR_SSL ()) { |
668 | $! = &Errno::EIO; |
829 | $! = &Errno::EIO; |
669 | $self->error; |
830 | $self->error; |
… | |
… | |
671 | |
832 | |
672 | # all others are fine for our purposes |
833 | # all others are fine for our purposes |
673 | } |
834 | } |
674 | } |
835 | } |
675 | |
836 | |
|
|
837 | =item $handle->starttls ($tls[, $tls_ctx]) |
|
|
838 | |
|
|
839 | Instead of starting TLS negotiation immediately when the AnyEvent::Handle |
|
|
840 | object is created, you can also do that at a later time by calling |
|
|
841 | C<starttls>. |
|
|
842 | |
|
|
843 | The first argument is the same as the C<tls> constructor argument (either |
|
|
844 | C<"connect">, C<"accept"> or an existing Net::SSLeay object). |
|
|
845 | |
|
|
846 | The second argument is the optional C<Net::SSLeay::CTX> object that is |
|
|
847 | used when AnyEvent::Handle has to create its own TLS connection object. |
|
|
848 | |
|
|
849 | =cut |
|
|
850 | |
676 | # TODO: maybe document... |
851 | # TODO: maybe document... |
677 | sub starttls { |
852 | sub starttls { |
678 | my ($self, $ssl, $ctx) = @_; |
853 | my ($self, $ssl, $ctx) = @_; |
|
|
854 | |
|
|
855 | $self->stoptls; |
679 | |
856 | |
680 | if ($ssl eq "accept") { |
857 | if ($ssl eq "accept") { |
681 | $ssl = Net::SSLeay::new ($ctx || TLS_CTX ()); |
858 | $ssl = Net::SSLeay::new ($ctx || TLS_CTX ()); |
682 | Net::SSLeay::set_accept_state ($ssl); |
859 | Net::SSLeay::set_accept_state ($ssl); |
683 | } elsif ($ssl eq "connect") { |
860 | } elsif ($ssl eq "connect") { |
… | |
… | |
689 | |
866 | |
690 | # basically, this is deep magic (because SSL_read should have the same issues) |
867 | # basically, this is deep magic (because SSL_read should have the same issues) |
691 | # but the openssl maintainers basically said: "trust us, it just works". |
868 | # but the openssl maintainers basically said: "trust us, it just works". |
692 | # (unfortunately, we have to hardcode constants because the abysmally misdesigned |
869 | # (unfortunately, we have to hardcode constants because the abysmally misdesigned |
693 | # and mismaintained ssleay-module doesn't even offer them). |
870 | # and mismaintained ssleay-module doesn't even offer them). |
|
|
871 | # http://www.mail-archive.com/openssl-dev@openssl.org/msg22420.html |
694 | Net::SSLeay::CTX_set_mode ($self->{tls}, |
872 | Net::SSLeay::CTX_set_mode ($self->{tls}, |
695 | (eval { Net::SSLeay::MODE_ENABLE_PARTIAL_WRITE () } || 1) |
873 | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ENABLE_PARTIAL_WRITE () } || 1) |
696 | | (eval { Net::SSLeay::MODE_ACCEPT_MOVING_WRITE_BUFFER () } || 2)); |
874 | | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ACCEPT_MOVING_WRITE_BUFFER () } || 2)); |
697 | |
875 | |
698 | $self->{tls_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
876 | $self->{tls_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
699 | $self->{tls_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
877 | $self->{tls_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
700 | |
878 | |
701 | Net::SSLeay::set_bio ($ssl, $self->{tls_rbio}, $self->{tls_wbio}); |
879 | Net::SSLeay::set_bio ($ssl, $self->{tls_rbio}, $self->{tls_wbio}); |
… | |
… | |
708 | Net::SSLeay::BIO_write ($_[0]{tls_rbio}, ${$_[1]}); |
886 | Net::SSLeay::BIO_write ($_[0]{tls_rbio}, ${$_[1]}); |
709 | &_dotls; |
887 | &_dotls; |
710 | }; |
888 | }; |
711 | } |
889 | } |
712 | |
890 | |
|
|
891 | =item $handle->stoptls |
|
|
892 | |
|
|
893 | Destroys the SSL connection, if any. Partial read or write data will be |
|
|
894 | lost. |
|
|
895 | |
|
|
896 | =cut |
|
|
897 | |
|
|
898 | sub stoptls { |
|
|
899 | my ($self) = @_; |
|
|
900 | |
|
|
901 | Net::SSLeay::free (delete $self->{tls}) if $self->{tls}; |
|
|
902 | delete $self->{tls_rbio}; |
|
|
903 | delete $self->{tls_wbio}; |
|
|
904 | delete $self->{tls_wbuf}; |
|
|
905 | delete $self->{filter_r}; |
|
|
906 | delete $self->{filter_w}; |
|
|
907 | } |
|
|
908 | |
713 | sub DESTROY { |
909 | sub DESTROY { |
714 | my $self = shift; |
910 | my $self = shift; |
715 | |
911 | |
716 | Net::SSLeay::free (delete $self->{tls}) if $self->{tls}; |
912 | $self->stoptls; |
717 | } |
913 | } |
718 | |
914 | |
719 | =item AnyEvent::Handle::TLS_CTX |
915 | =item AnyEvent::Handle::TLS_CTX |
720 | |
916 | |
721 | This function creates and returns the Net::SSLeay::CTX object used by |
917 | This function creates and returns the Net::SSLeay::CTX object used by |