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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.69 by root, Fri Dec 31 19:32:47 2010 UTC vs.
Revision 1.82 by root, Sun Jan 2 04:50:40 2011 UTC

… …
122 122
123If the server sends a header multiple times, then their contents will be 123If the server sends a header multiple times, then their contents will be
124joined together with a comma (C<,>), as per the HTTP spec. 124joined together with a comma (C<,>), as per the HTTP spec.
125 125
126If an internal error occurs, such as not being able to resolve a hostname, 126If an internal error occurs, such as not being able to resolve a hostname,
127then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x> 127then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
128(usually C<599>) and the C<Reason> pseudo-header will contain an error 128C<590>-C<599> and the C<Reason> pseudo-header will contain an error
129message. 129message. Currently the following status codes are used:
130
131=over 4
132
133=item 595 - errors during connection etsbalishment, proxy handshake.
134
135=item 596 - errors during TLS negotiation, request sending and header processing.
136
137=item 597 - errors during body receiving or processing.
138
139=item 598 - user aborted request via C<on_header> or C<on_body>.
140
141=item 599 - other, usually nonretryable, errors (garbled URL etc.).
142
143=back
130 144
131A typical callback might look like this: 145A typical callback might look like this:
132 146
133 sub { 147 sub {
134 my ($body, $hdr) = @_; 148 my ($body, $hdr) = @_;
… …
182=item cookie_jar => $hash_ref 196=item cookie_jar => $hash_ref
183 197
184Passing this parameter enables (simplified) cookie-processing, loosely 198Passing this parameter enables (simplified) cookie-processing, loosely
185based on the original netscape specification. 199based on the original netscape specification.
186 200
187The C<$hash_ref> must be an (initially empty) hash reference which will 201The C<$hash_ref> must be an (initially empty) hash reference which
188get updated automatically. It is possible to save the cookie_jar to 202will get updated automatically. It is possible to save the cookie jar
189persistent storage with something like JSON or Storable, but this is not 203to persistent storage with something like JSON or Storable - see the
190recommended, as expiry times are currently being ignored. 204C<AnyEvent::HTTP::cookie_jar_expire> function if you wish to remove
205expired or session-only cookies, and also for documentation on the format
206of the cookie jar.
191 207
192Note that this cookie implementation is not of very high quality, nor 208Note that this cookie implementation is not meant to be complete. If
193meant to be complete. If you want complete cookie management you have to 209you want complete cookie management you have to do that on your
194do that on your own. C<cookie_jar> is meant as a quick fix to get some 210own. C<cookie_jar> is meant as a quick fix to get most cookie-using sites
195cookie-using sites working. Cookies are a privacy disaster, do not use 211working. Cookies are a privacy disaster, do not use them unless required
196them unless required to. 212to.
197 213
198When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:> 214When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
199headers will be ste and handled by this module, otherwise they will be 215headers will be set and handled by this module, otherwise they will be
200left untouched. 216left untouched.
201 217
202=item tls_ctx => $scheme | $tls_ctx 218=item tls_ctx => $scheme | $tls_ctx
203 219
204Specifies the AnyEvent::TLS context to be used for https connections. This 220Specifies the AnyEvent::TLS context to be used for https connections. This
… …
364 push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; 380 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
365 381
366 _slot_schedule $_[0]; 382 _slot_schedule $_[0];
367} 383}
368 384
385#############################################################################
386
387# expire cookies
388sub cookie_jar_expire($;$) {
389 my ($jar, $session_end) = @_;
390
391 %$jar = () if $jar->{version} != 1;
392
393 my $anow = AE::now;
394
395 while (my ($chost, $paths) = each %$jar) {
396 next unless ref $paths;
397
398 while (my ($cpath, $cookies) = each %$paths) {
399 while (my ($cookie, $kv) = each %$cookies) {
400 if (exists $kv->{_expires}) {
401 delete $cookies->{$cookie}
402 if $anow > $kv->{_expires};
403 } elsif ($session_end) {
404 delete $cookies->{$cookie};
405 }
406 }
407
408 delete $paths->{$cpath}
409 unless %$cookies;
410 }
411
412 delete $jar->{$chost}
413 unless %$paths;
414 }
415}
416
417# extract cookies from jar
418sub cookie_jar_extract($$$$) {
419 my ($jar, $uscheme, $uhost, $upath) = @_;
420
421 %$jar = () if $jar->{version} != 1;
422
423 my @cookies;
424
425 while (my ($chost, $paths) = each %$jar) {
426 next unless ref $paths;
427
428 if ($chost =~ /^\./) {
429 next unless $chost eq substr $uhost, -length $chost;
430 } elsif ($chost =~ /\./) {
431 next unless $chost eq $uhost;
432 } else {
433 next;
434 }
435
436 while (my ($cpath, $cookies) = each %$paths) {
437 next unless $cpath eq substr $upath, 0, length $cpath;
438
439 while (my ($cookie, $kv) = each %$cookies) {
440 next if $uscheme ne "https" && exists $kv->{secure};
441
442 if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
443 delete $cookies->{$cookie};
444 next;
445 }
446
447 my $value = $kv->{value};
448
449 if ($value =~ /[=;,[:space:]]/) {
450 $value =~ s/([\\"])/\\$1/g;
451 $value = "\"$value\"";
452 }
453
454 push @cookies, "$cookie=$value";
455 }
456 }
457 }
458
459 \@cookies
460}
461
462# parse set_cookie header into jar
463sub cookie_jar_set_cookie($$$$) {
464 my ($jar, $set_cookie, $uhost, $date) = @_;
465
466 my $anow = int AE::now;
467 my $snow; # server-now
468
469 for ($set_cookie) {
470 # parse NAME=VALUE
471 my @kv;
472
473 # expires is not http-compliant in the original cookie-spec,
474 # we support the official date format and some extensions
475 while (
476 m{
477 \G\s*
478 (?:
479 expires \s*=\s* ([A-Z][a-z][a-z]+,\ [^,;]+)
480 | ([^=;,[:space:]]+) (?: \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) ) )?
481 )
482 }gcxsi
483 ) {
484 my $name = $2;
485 my $value = $4;
486
487 if (defined $1) {
488 # expires
489 $name = "expires";
490 $value = $1;
491 } elsif (defined $3) {
492 # quoted
493 $value = $3;
494 $value =~ s/\\(.)/$1/gs;
495 }
496
497 push @kv, lc $name, $value;
498
499 last unless /\G\s*;/gc;
500 }
501
502 last unless @kv;
503
504 my $name = shift @kv;
505 my %kv = (value => shift @kv, @kv);
506
507 if (exists $kv{"max-age"}) {
508 $kv{_expires} = $anow + delete $kv{"max-age"};
509 } elsif (exists $kv{expires}) {
510 $snow ||= parse_date ($date) || $anow;
511 $kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow);
512 } else {
513 delete $kv{_expires};
514 }
515
516 my $cdom;
517 my $cpath = (delete $kv{path}) || "/";
518
519 if (exists $kv{domain}) {
520 $cdom = delete $kv{domain};
521
522 $cdom =~ s/^\.?/./; # make sure it starts with a "."
523
524 next if $cdom =~ /\.$/;
525
526 # this is not rfc-like and not netscape-like. go figure.
527 my $ndots = $cdom =~ y/.//;
528 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
529 } else {
530 $cdom = $uhost;
531 }
532
533 # store it
534 $jar->{version} = 1;
535 $jar->{$cdom}{$cpath}{$name} = \%kv;
536
537 redo if /\G\s*,/gc;
538 }
539}
540
369# continue to parse $_ for headers and place them into the arg 541# continue to parse $_ for headers and place them into the arg
370sub parse_hdr() { 542sub parse_hdr() {
371 my %hdr; 543 my %hdr;
372 544
373 # things seen, not parsed: 545 # things seen, not parsed:
… …
448 620
449 $upath =~ s%^/?%/%; 621 $upath =~ s%^/?%/%;
450 622
451 # cookie processing 623 # cookie processing
452 if (my $jar = $arg{cookie_jar}) { 624 if (my $jar = $arg{cookie_jar}) {
453 %$jar = () if $jar->{version} != 1; 625 my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
454 626
455 my @cookie;
456
457 while (my ($chost, $v) = each %$jar) {
458 if ($chost =~ /^\./) {
459 next unless $chost eq substr $uhost, -length $chost;
460 } elsif ($chost =~ /\./) {
461 next unless $chost eq $uhost;
462 } else {
463 next;
464 }
465
466 while (my ($cpath, $v) = each %$v) {
467 next unless $cpath eq substr $upath, 0, length $cpath;
468
469 while (my ($k, $v) = each %$v) {
470 next if $uscheme ne "https" && exists $v->{secure};
471 my $value = $v->{value};
472 $value =~ s/([\\"])/\\$1/g;
473 push @cookie, "$k=\"$value\"";
474 }
475 }
476 }
477
478 $hdr{cookie} = join "; ", @cookie 627 $hdr{cookie} = join "; ", @$cookies
479 if @cookie; 628 if @$cookies;
480 } 629 }
481 630
482 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path 631 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
483 632
484 if ($proxy) { 633 if ($proxy) {
… …
508 _get_slot $uhost, sub { 657 _get_slot $uhost, sub {
509 $state{slot_guard} = shift; 658 $state{slot_guard} = shift;
510 659
511 return unless $state{connect_guard}; 660 return unless $state{connect_guard};
512 661
662 my $ae_error = 595; # connecting
663
664 # handle actual, non-tunneled, request
665 my $handle_actual_request = sub {
666 $ae_error = 596; # request phase
667
668 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
669
670 # send request
671 $state{handle}->push_write (
672 "$method $rpath HTTP/1.1\015\012"
673 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
674 . "\015\012"
675 . (delete $arg{body})
676 );
677
678 # return if error occured during push_write()
679 return unless %state;
680
681 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
682
683 # status line and headers
684 $state{read_response} = sub {
685 for ("$_[1]") {
686 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
687
688 /^HTTP\/0*([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/gxci
689 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
690
691 # 100 Continue handling
692 # should not happen as we don't send expect: 100-continue,
693 # but we handle it just in case.
694 # since we send the request body regardless, if we get an error
695 # we are out of-sync, which we currently do NOT handle correctly.
696 return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
697 if $2 eq 100;
698
699 push @pseudo,
700 HTTPVersion => $1,
701 Status => $2,
702 Reason => $3,
703 ;
704
705 my $hdr = parse_hdr
706 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
707
708 %hdr = (%$hdr, @pseudo);
709 }
710
711 # redirect handling
712 # microsoft and other shitheads don't give a shit for following standards,
713 # try to support some common forms of broken Location headers.
714 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
715 $hdr{location} =~ s/^\.\/+//;
716
717 my $url = "$rscheme://$uhost:$uport";
718
719 unless ($hdr{location} =~ s/^\///) {
720 $url .= $upath;
721 $url =~ s/\/[^\/]*$//;
722 }
723
724 $hdr{location} = "$url/$hdr{location}";
725 }
726
727 my $redirect;
728
729 if ($recurse) {
730 my $status = $hdr{Status};
731
732 # industry standard is to redirect POST as GET for
733 # 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
734 # also, the UA should ask the user for 301 and 307 and POST,
735 # industry standard seems to be to simply follow.
736 # we go with the industry standard.
737 if ($status == 301 or $status == 302 or $status == 303) {
738 # HTTP/1.1 is unclear on how to mutate the method
739 $method = "GET" unless $method eq "HEAD";
740 $redirect = 1;
741 } elsif ($status == 307) {
742 $redirect = 1;
743 }
744 }
745
746 my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
747 my $may_keep_alive = $_[3];
748
749 $state{handle}->destroy if $state{handle};
750 %state = ();
751
752 if (defined $_[1]) {
753 $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
754 $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
755 }
756
757 # set-cookie processing
758 if ($arg{cookie_jar}) {
759 cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost, $hdr{date};
760 }
761
762 if ($redirect && exists $hdr{location}) {
763 # we ignore any errors, as it is very common to receive
764 # Content-Length != 0 but no actual body
765 # we also access %hdr, as $_[1] might be an erro
766 http_request (
767 $method => $hdr{location},
768 %arg,
769 recurse => $recurse - 1,
770 Redirect => [$_[0], \%hdr],
771 $cb);
772 } else {
773 $cb->($_[0], \%hdr);
774 }
775 };
776
777 $ae_error = 597; # body phase
778
779 my $len = $hdr{"content-length"};
780
781 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
782 $finish->(undef, 598 => "Request cancelled by on_header");
783 } elsif (
784 $hdr{Status} =~ /^(?:1..|204|205|304)$/
785 or $method eq "HEAD"
786 or (defined $len && !$len)
787 ) {
788 # no body
789 $finish->("", undef, undef, 1);
790 } else {
791 # body handling, many different code paths
792 # - no body expected
793 # - want_body_handle
794 # - te chunked
795 # - 2x length known (with or without on_body)
796 # - 2x length not known (with or without on_body)
797 if (!$redirect && $arg{want_body_handle}) {
798 $_[0]->on_eof (undef);
799 $_[0]->on_error (undef);
800 $_[0]->on_read (undef);
801
802 $finish->(delete $state{handle});
803
804 } elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
805 my $cl = 0;
806 my $body = undef;
807 my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
808
809 $state{read_chunk} = sub {
810 $_[1] =~ /^([0-9a-fA-F]+)/
811 or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
812
813 my $len = hex $1;
814
815 if ($len) {
816 $cl += $len;
817
818 $_[0]->push_read (chunk => $len, sub {
819 $on_body->($_[1], \%hdr)
820 or return $finish->(undef, 598 => "Request cancelled by on_body");
821
822 $_[0]->push_read (line => sub {
823 length $_[1]
824 and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
825 $_[0]->push_read (line => $state{read_chunk});
826 });
827 });
828 } else {
829 $hdr{"content-length"} ||= $cl;
830
831 $_[0]->push_read (line => $qr_nlnl, sub {
832 if (length $_[1]) {
833 for ("$_[1]") {
834 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
835
836 my $hdr = parse_hdr
837 or return $finish->(undef, $ae_error => "Garbled response trailers");
838
839 %hdr = (%hdr, %$hdr);
840 }
841 }
842
843 $finish->($body, undef, undef, 1);
844 });
845 }
846 };
847
848 $_[0]->push_read (line => $state{read_chunk});
849
850 } elsif ($arg{on_body}) {
851 if ($len) {
852 $_[0]->on_read (sub {
853 $len -= length $_[0]{rbuf};
854
855 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
856 or return $finish->(undef, 598 => "Request cancelled by on_body");
857
858 $len > 0
859 or $finish->("", undef, undef, 1);
860 });
861 } else {
862 $_[0]->on_eof (sub {
863 $finish->("");
864 });
865 $_[0]->on_read (sub {
866 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
867 or $finish->(undef, 598 => "Request cancelled by on_body");
868 });
869 }
870 } else {
871 $_[0]->on_eof (undef);
872
873 if ($len) {
874 $_[0]->on_read (sub {
875 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
876 if $len <= length $_[0]{rbuf};
877 });
878 } else {
879 $_[0]->on_error (sub {
880 ($! == Errno::EPIPE || !$!)
881 ? $finish->(delete $_[0]{rbuf})
882 : $finish->(undef, $ae_error => $_[2]);
883 });
884 $_[0]->on_read (sub { });
885 }
886 }
887 }
888 };
889
890 $state{handle}->push_read (line => $qr_nlnl, $state{read_response});
891 };
892
513 my $connect_cb = sub { 893 my $connect_cb = sub {
514 $state{fh} = shift 894 $state{fh} = shift
515 or do { 895 or do {
516 my $err = "$!"; 896 my $err = "$!";
517 %state = (); 897 %state = ();
518 return $cb->(undef, { @pseudo, Status => 599, Reason => $err }); 898 return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
519 }; 899 };
520
521 pop; # free memory, save a tree
522 900
523 return unless delete $state{connect_guard}; 901 return unless delete $state{connect_guard};
524 902
525 # get handle 903 # get handle
526 $state{handle} = new AnyEvent::Handle 904 $state{handle} = new AnyEvent::Handle
… …
529 tls_ctx => $arg{tls_ctx}, 907 tls_ctx => $arg{tls_ctx},
530 # these need to be reconfigured on keepalive handles 908 # these need to be reconfigured on keepalive handles
531 timeout => $timeout, 909 timeout => $timeout,
532 on_error => sub { 910 on_error => sub {
533 %state = (); 911 %state = ();
534 $cb->(undef, { @pseudo, Status => 599, Reason => $_[2] }); 912 $cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
535 }, 913 },
536 on_eof => sub { 914 on_eof => sub {
537 %state = (); 915 %state = ();
538 $cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" }); 916 $cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
539 }, 917 },
540 ; 918 ;
541 919
542 # limit the number of persistent connections 920 # limit the number of persistent connections
543 # keepalive not yet supported 921 # keepalive not yet supported
… …
549# $hdr{connection} = "keep-alive"; 927# $hdr{connection} = "keep-alive";
550# } 928# }
551 929
552 $state{handle}->starttls ("connect") if $rscheme eq "https"; 930 $state{handle}->starttls ("connect") if $rscheme eq "https";
553 931
554 # handle actual, non-tunneled, request
555 my $handle_actual_request = sub {
556 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
557
558 # send request
559 $state{handle}->push_write (
560 "$method $rpath HTTP/1.1\015\012"
561 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
562 . "\015\012"
563 . (delete $arg{body})
564 );
565
566 # return if error occured during push_write()
567 return unless %state;
568
569 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
570
571 # status line and headers
572 $state{read_response} = sub {
573 for ("$_[1]") {
574 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
575
576 /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
577 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
578
579 # 100 Continue handling
580 # should not happen as we don't send expect: 100-continue,
581 # but we handle it just in case.
582 # since we send the request body regardless, if we get an error
583 # we are out of-sync, which we currently do NOT handle correctly.
584 return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
585 if $2 eq 100;
586
587 push @pseudo,
588 HTTPVersion => $1,
589 Status => $2,
590 Reason => $3,
591 ;
592
593 my $hdr = parse_hdr
594 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
595
596 %hdr = (%$hdr, @pseudo);
597 }
598
599 # redirect handling
600 # microsoft and other shitheads don't give a shit for following standards,
601 # try to support some common forms of broken Location headers.
602 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
603 $hdr{location} =~ s/^\.\/+//;
604
605 my $url = "$rscheme://$uhost:$uport";
606
607 unless ($hdr{location} =~ s/^\///) {
608 $url .= $upath;
609 $url =~ s/\/[^\/]*$//;
610 }
611
612 $hdr{location} = "$url/$hdr{location}";
613 }
614
615 my $redirect;
616
617 if ($recurse) {
618 my $status = $hdr{Status};
619
620 # industry standard is to redirect POST as GET for
621 # 301, 302 and 303, in contrast to http/1.0 and 1.1.
622 # also, the UA should ask the user for 301 and 307 and POST,
623 # industry standard seems to be to simply follow.
624 # we go with the industry standard.
625 if ($status == 301 or $status == 302 or $status == 303) {
626 # HTTP/1.1 is unclear on how to mutate the method
627 $method = "GET" unless $method eq "HEAD";
628 $redirect = 1;
629 } elsif ($status == 307) {
630 $redirect = 1;
631 }
632 }
633
634 my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
635 my $keepalive = pop;
636
637 $state{handle}->destroy if $state{handle};
638 %state = ();
639
640 if (defined $_[1]) {
641 $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
642 $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
643 }
644
645 # set-cookie processing
646 if ($arg{cookie_jar}) {
647 for ($hdr{"set-cookie"}) {
648 # parse NAME=VALUE
649 my @kv;
650
651 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
652 my $name = $1;
653 my $value = $3;
654
655 unless ($value) {
656 $value = $2;
657 $value =~ s/\\(.)/$1/gs;
658 }
659
660 push @kv, $name => $value;
661
662 last unless /\G\s*;/gc;
663 }
664
665 last unless @kv;
666
667 my $name = shift @kv;
668 my %kv = (value => shift @kv, @kv);
669
670 my $cdom;
671 my $cpath = (delete $kv{path}) || "/";
672
673 if (exists $kv{domain}) {
674 $cdom = delete $kv{domain};
675
676 $cdom =~ s/^\.?/./; # make sure it starts with a "."
677
678 next if $cdom =~ /\.$/;
679
680 # this is not rfc-like and not netscape-like. go figure.
681 my $ndots = $cdom =~ y/.//;
682 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
683 } else {
684 $cdom = $uhost;
685 }
686
687 # store it
688 $arg{cookie_jar}{version} = 1;
689 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
690
691 redo if /\G\s*,/gc;
692 }
693 }
694
695 if ($redirect && exists $hdr{location}) {
696 # we ignore any errors, as it is very common to receive
697 # Content-Length != 0 but no actual body
698 # we also access %hdr, as $_[1] might be an erro
699 http_request (
700 $method => $hdr{location},
701 %arg,
702 recurse => $recurse - 1,
703 Redirect => [$_[0], \%hdr],
704 $cb);
705 } else {
706 $cb->($_[0], \%hdr);
707 }
708 };
709
710 my $len = $hdr{"content-length"};
711
712 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
713 $finish->(undef, 598 => "Request cancelled by on_header");
714 } elsif (
715 $hdr{Status} =~ /^(?:1..|204|205|304)$/
716 or $method eq "HEAD"
717 or (defined $len && !$len)
718 ) {
719 # no body
720 $finish->("", undef, undef, 1);
721 } else {
722 # body handling, many different code paths
723 # - no body expected
724 # - want_body_handle
725 # - te chunked
726 # - 2x length known (with or without on_body)
727 # - 2x length not known (with or without on_body)
728 if (!$redirect && $arg{want_body_handle}) {
729 $_[0]->on_eof (undef);
730 $_[0]->on_error (undef);
731 $_[0]->on_read (undef);
732
733 $finish->(delete $state{handle});
734
735 } elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
736 my $cl = 0;
737 my $body = undef;
738 my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
739
740 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
741
742 my $read_chunk; $read_chunk = sub {
743 $_[1] =~ /^([0-9a-fA-F]+)/
744 or $finish->(undef, 599 => "Garbled chunked transfer encoding");
745
746 my $len = hex $1;
747
748 if ($len) {
749 $cl += $len;
750
751 $_[0]->push_read (chunk => $len, sub {
752 $on_body->($_[1], \%hdr)
753 or return $finish->(undef, 598 => "Request cancelled by on_body");
754
755 $_[0]->push_read (line => sub {
756 length $_[1]
757 and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
758 $_[0]->push_read (line => $read_chunk);
759 });
760 });
761 } else {
762 $hdr{"content-length"} ||= $cl;
763
764 $_[0]->push_read (line => $qr_nlnl, sub {
765 if (length $_[1]) {
766 for ("$_[1]") {
767 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
768
769 my $hdr = parse_hdr
770 or return $finish->(undef, 599 => "Garbled response trailers");
771
772 %hdr = (%hdr, %$hdr);
773 }
774 }
775
776 $finish->($body, undef, undef, 1);
777 });
778 }
779 };
780
781 $_[0]->push_read (line => $read_chunk);
782
783 } elsif ($arg{on_body}) {
784 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
785
786 if ($len) {
787 $_[0]->on_read (sub {
788 $len -= length $_[0]{rbuf};
789
790 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
791 or return $finish->(undef, 598 => "Request cancelled by on_body");
792
793 $len > 0
794 or $finish->("", undef, undef, 1);
795 });
796 } else {
797 $_[0]->on_eof (sub {
798 $finish->("");
799 });
800 $_[0]->on_read (sub {
801 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
802 or $finish->(undef, 598 => "Request cancelled by on_body");
803 });
804 }
805 } else {
806 $_[0]->on_eof (undef);
807
808 if ($len) {
809 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
810 $_[0]->on_read (sub {
811 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
812 if $len <= length $_[0]{rbuf};
813 });
814 } else {
815 $_[0]->on_error (sub {
816 ($! == Errno::EPIPE || !$!)
817 ? $finish->(delete $_[0]{rbuf})
818 : $finish->(undef, 599 => $_[2]);
819 });
820 $_[0]->on_read (sub { });
821 }
822 }
823 }
824 };
825
826 $state{handle}->push_read (line => $qr_nlnl, $state{read_response});
827 };
828
829 # now handle proxy-CONNECT method 932 # now handle proxy-CONNECT method
830 if ($proxy && $uscheme eq "https") { 933 if ($proxy && $uscheme eq "https") {
831 # oh dear, we have to wrap it into a connect request 934 # oh dear, we have to wrap it into a connect request
832 935
833 # maybe re-use $uauthority with patched port? 936 # maybe re-use $uauthority with patched port?
… …
836 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix 939 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
837 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" })); 940 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
838 941
839 if ($2 == 200) { 942 if ($2 == 200) {
840 $rpath = $upath; 943 $rpath = $upath;
841 &$handle_actual_request; 944 $handle_actual_request->();
842 } else { 945 } else {
843 %state = (); 946 %state = ();
844 $cb->(undef, { @pseudo, Status => $2, Reason => $3 }); 947 $cb->(undef, { @pseudo, Status => $2, Reason => $3 });
845 } 948 }
846 }); 949 });
847 } else { 950 } else {
848 &$handle_actual_request; 951 $handle_actual_request->();
849 } 952 }
850 }; 953 };
851 954
852 my $tcp_connect = $arg{tcp_connect} 955 my $tcp_connect = $arg{tcp_connect}
853 || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect }; 956 || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
854 957
855 $state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout }); 958 $state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout });
856
857 }; 959 };
858 960
859 defined wantarray && AnyEvent::Util::guard { %state = () } 961 defined wantarray && AnyEvent::Util::guard { %state = () }
860} 962}
861 963
… …
896string of the form C<http://host:port> (optionally C<https:...>), croaks 998string of the form C<http://host:port> (optionally C<https:...>), croaks
897otherwise. 999otherwise.
898 1000
899To clear an already-set proxy, use C<undef>. 1001To clear an already-set proxy, use C<undef>.
900 1002
1003=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
1004
1005Remove all cookies from the cookie jar that have been expired. If
1006C<$session_end> is given and true, then additionally remove all session
1007cookies.
1008
1009You should call this function (with a true C<$session_end>) before you
1010save cookies to disk, and you should call this function after loading them
1011again. If you have a long-running program you can additonally call this
1012function from time to time.
1013
1014A cookie jar is initially an empty hash-reference that is managed by this
1015module. It's format is subject to change, but currently it is like this:
1016
1017The key C<version> has to contain C<1>, otherwise the hash gets
1018emptied. All other keys are hostnames or IP addresses pointing to
1019hash-references. The key for these inner hash references is the
1020server path for which this cookie is meant, and the values are again
1021hash-references. The keys of those hash-references is the cookie name, and
1022the value, you guessed it, is another hash-reference, this time with the
1023key-value pairs from the cookie, except for C<expires> and C<max-age>,
1024which have been replaced by a C<_expires> key that contains the cookie
1025expiry timestamp.
1026
1027Here is an example of a cookie jar with a single cookie, so you have a
1028chance of understanding the above paragraph:
1029
1030 {
1031 version => 1,
1032 "10.0.0.1" => {
1033 "/" => {
1034 "mythweb_id" => {
1035 _expires => 1293917923,
1036 value => "ooRung9dThee3ooyXooM1Ohm",
1037 },
1038 },
1039 },
1040 }
1041
901=item $date = AnyEvent::HTTP::format_date $timestamp 1042=item $date = AnyEvent::HTTP::format_date $timestamp
902 1043
903Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP 1044Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
904Date (RFC 2616). 1045Date (RFC 2616).
905 1046
906=item $timestamp = AnyEvent::HTTP::parse_date $date 1047=item $timestamp = AnyEvent::HTTP::parse_date $date
907 1048
908Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX 1049Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
1050bunch of minor variations of those, and returns the corresponding POSIX
909timestamp, or C<undef> if the date cannot be parsed. 1051timestamp, or C<undef> if the date cannot be parsed.
910 1052
911=item $AnyEvent::HTTP::MAX_RECURSE 1053=item $AnyEvent::HTTP::MAX_RECURSE
912 1054
913The default value for the C<recurse> request parameter (default: C<10>). 1055The default value for the C<recurse> request parameter (default: C<10>).
… …
953sub parse_date($) { 1095sub parse_date($) {
954 my ($date) = @_; 1096 my ($date) = @_;
955 1097
956 my ($d, $m, $y, $H, $M, $S); 1098 my ($d, $m, $y, $H, $M, $S);
957 1099
958 if ($date =~ /^[A-Z][a-z][a-z], ([0-9][0-9]) ([A-Z][a-z][a-z]) ([0-9][0-9][0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) { 1100 if ($date =~ /^[A-Z][a-z][a-z]+, ([0-9][0-9]?)[\- ]([A-Z][a-z][a-z])[\- ]([0-9][0-9][0-9][0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) GMT$/) {
959 # RFC 822/1123, required by RFC 2616 1101 # RFC 822/1123, required by RFC 2616 (with " ")
1102 # cookie dates (with "-")
1103
960 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6); 1104 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
961 1105
962 } elsif ($date =~ /^[A-Z][a-z]+, ([0-9][0-9])-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) { 1106 } elsif ($date =~ /^[A-Z][a-z][a-z]+, ([0-9][0-9]?)-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) GMT$/) {
963 # RFC 850 1107 # RFC 850
964 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6); 1108 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
965 1109
966 } elsif ($date =~ /^[A-Z][a-z][a-z] ([A-Z][a-z][a-z]) ([0-9 ][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) ([0-9][0-9][0-9][0-9])$/) { 1110 } elsif ($date =~ /^[A-Z][a-z][a-z]+ ([A-Z][a-z][a-z]) ([0-9 ]?[0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) ([0-9][0-9][0-9][0-9])$/) {
967 # ISO C's asctime 1111 # ISO C's asctime
968 ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5); 1112 ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
969 } 1113 }
970 # other formats fail in the loop below 1114 # other formats fail in the loop below
971 1115

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