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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.71 by root, Fri Dec 31 20:50:58 2010 UTC vs.
Revision 1.84 by root, Sun Jan 2 05:13:27 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 session-only cookies might survive longer than expected. 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 meant to be complete. If 208Note that this cookie implementation is not meant to be complete. If
193you want complete cookie management you have to do that on your 209you want complete cookie management you have to do that on your
194own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites 210own. C<cookie_jar> is meant as a quick fix to get most cookie-using sites
195working. Cookies are a privacy disaster, do not use them unless required 211working. Cookies are a privacy disaster, do not use them unless required
196to. 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 set and handled by this module, otherwise they will be 215headers will be set and handled by this module, otherwise they will be
… …
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
369sub cookie_jar_extract($$$$) { 418sub cookie_jar_extract($$$$) {
370 my ($jar, $uscheme, $uhost, $upath) = @_; 419 my ($jar, $uscheme, $uhost, $upath) = @_;
420
421 $uhost = lc $uhost;
371 422
372 %$jar = () if $jar->{version} != 1; 423 %$jar = () if $jar->{version} != 1;
373 424
374 my @cookies; 425 my @cookies;
375 426
… …
388 next unless $cpath eq substr $upath, 0, length $cpath; 439 next unless $cpath eq substr $upath, 0, length $cpath;
389 440
390 while (my ($cookie, $kv) = each %$cookies) { 441 while (my ($cookie, $kv) = each %$cookies) {
391 next if $uscheme ne "https" && exists $kv->{secure}; 442 next if $uscheme ne "https" && exists $kv->{secure};
392 443
393 if (exists $kv->{expires}) { 444 if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
394 if (AE::now > parse_date ($kv->{expires})) {
395 delete $cookies->{$cookie}; 445 delete $cookies->{$cookie};
396 next; 446 next;
397 }
398 } 447 }
399 448
400 my $value = $kv->{value}; 449 my $value = $kv->{value};
401 450
402 if ($value =~ /[=;,[:space:]]/) { 451 if ($value =~ /[=;,[:space:]]/) {
… …
410 } 459 }
411 460
412 \@cookies 461 \@cookies
413} 462}
414 463
464# parse set_cookie header into jar
465sub cookie_jar_set_cookie($$$$) {
466 my ($jar, $set_cookie, $uhost, $date) = @_;
467
468 my $anow = int AE::now;
469 my $snow; # server-now
470
471 for ($set_cookie) {
472 # parse NAME=VALUE
473 my @kv;
474
475 # expires is not http-compliant in the original cookie-spec,
476 # we support the official date format and some extensions
477 while (
478 m{
479 \G\s*
480 (?:
481 expires \s*=\s* ([A-Z][a-z][a-z]+,\ [^,;]+)
482 | ([^=;,[:space:]]+) (?: \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) ) )?
483 )
484 }gcxsi
485 ) {
486 my $name = $2;
487 my $value = $4;
488
489 if (defined $1) {
490 # expires
491 $name = "expires";
492 $value = $1;
493 } elsif (defined $3) {
494 # quoted
495 $value = $3;
496 $value =~ s/\\(.)/$1/gs;
497 }
498
499 push @kv, lc $name, $value;
500
501 last unless /\G\s*;/gc;
502 }
503
504 last unless @kv;
505
506 my $name = shift @kv;
507 my %kv = (value => shift @kv, @kv);
508
509 if (exists $kv{"max-age"}) {
510 $kv{_expires} = $anow + delete $kv{"max-age"};
511 } elsif (exists $kv{expires}) {
512 $snow ||= parse_date ($date) || $anow;
513 $kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow);
514 } else {
515 delete $kv{_expires};
516 }
517
518 my $cdom;
519 my $cpath = (delete $kv{path}) || "/";
520
521 if (exists $kv{domain}) {
522 $cdom = delete $kv{domain};
523
524 $cdom =~ s/^\.?/./; # make sure it starts with a "."
525
526 next if $cdom =~ /\.$/;
527
528 # this is not rfc-like and not netscape-like. go figure.
529 my $ndots = $cdom =~ y/.//;
530 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
531 } else {
532 $cdom = $uhost;
533 }
534
535 # store it
536 $jar->{version} = 1;
537 $jar->{lc $cdom}{$cpath}{$name} = \%kv;
538
539 redo if /\G\s*,/gc;
540 }
541}
542
415# continue to parse $_ for headers and place them into the arg 543# continue to parse $_ for headers and place them into the arg
416sub parse_hdr() { 544sub parse_hdr() {
417 my %hdr; 545 my %hdr;
418 546
419 # things seen, not parsed: 547 # things seen, not parsed:
… …
531 _get_slot $uhost, sub { 659 _get_slot $uhost, sub {
532 $state{slot_guard} = shift; 660 $state{slot_guard} = shift;
533 661
534 return unless $state{connect_guard}; 662 return unless $state{connect_guard};
535 663
664 my $ae_error = 595; # connecting
665
666 # handle actual, non-tunneled, request
667 my $handle_actual_request = sub {
668 $ae_error = 596; # request phase
669
670 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
671
672 # send request
673 $state{handle}->push_write (
674 "$method $rpath HTTP/1.1\015\012"
675 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
676 . "\015\012"
677 . (delete $arg{body})
678 );
679
680 # return if error occured during push_write()
681 return unless %state;
682
683 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
684
685 # status line and headers
686 $state{read_response} = sub {
687 for ("$_[1]") {
688 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
689
690 /^HTTP\/0*([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/gxci
691 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
692
693 # 100 Continue handling
694 # should not happen as we don't send expect: 100-continue,
695 # but we handle it just in case.
696 # since we send the request body regardless, if we get an error
697 # we are out of-sync, which we currently do NOT handle correctly.
698 return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
699 if $2 eq 100;
700
701 push @pseudo,
702 HTTPVersion => $1,
703 Status => $2,
704 Reason => $3,
705 ;
706
707 my $hdr = parse_hdr
708 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
709
710 %hdr = (%$hdr, @pseudo);
711 }
712
713 # redirect handling
714 # microsoft and other shitheads don't give a shit for following standards,
715 # try to support some common forms of broken Location headers.
716 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
717 $hdr{location} =~ s/^\.\/+//;
718
719 my $url = "$rscheme://$uhost:$uport";
720
721 unless ($hdr{location} =~ s/^\///) {
722 $url .= $upath;
723 $url =~ s/\/[^\/]*$//;
724 }
725
726 $hdr{location} = "$url/$hdr{location}";
727 }
728
729 my $redirect;
730
731 if ($recurse) {
732 my $status = $hdr{Status};
733
734 # industry standard is to redirect POST as GET for
735 # 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
736 # also, the UA should ask the user for 301 and 307 and POST,
737 # industry standard seems to be to simply follow.
738 # we go with the industry standard.
739 if ($status == 301 or $status == 302 or $status == 303) {
740 # HTTP/1.1 is unclear on how to mutate the method
741 $method = "GET" unless $method eq "HEAD";
742 $redirect = 1;
743 } elsif ($status == 307) {
744 $redirect = 1;
745 }
746 }
747
748 my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
749 my $may_keep_alive = $_[3];
750
751 $state{handle}->destroy if $state{handle};
752 %state = ();
753
754 if (defined $_[1]) {
755 $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
756 $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
757 }
758
759 # set-cookie processing
760 if ($arg{cookie_jar}) {
761 cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost, $hdr{date};
762 }
763
764 if ($redirect && exists $hdr{location}) {
765 # we ignore any errors, as it is very common to receive
766 # Content-Length != 0 but no actual body
767 # we also access %hdr, as $_[1] might be an erro
768 http_request (
769 $method => $hdr{location},
770 %arg,
771 recurse => $recurse - 1,
772 Redirect => [$_[0], \%hdr],
773 $cb);
774 } else {
775 $cb->($_[0], \%hdr);
776 }
777 };
778
779 $ae_error = 597; # body phase
780
781 my $len = $hdr{"content-length"};
782 warn "no content $redirect x<$len>$hdr{Status}\n";#d#
783
784 # body handling, many different code paths
785 # - no body expected
786 # - want_body_handle
787 # - te chunked
788 # - 2x length known (with or without on_body)
789 # - 2x length not known (with or without on_body)
790 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
791 $finish->(undef, 598 => "Request cancelled by on_header");
792 } elsif (
793 $hdr{Status} =~ /^(?:1..|204|205|304)$/
794 or $method eq "HEAD"
795 or (defined $len && $len == 0) # == 0, not !, because "0 " is true
796 ) {
797 # no body
798 $finish->("", undef, undef, 1);
799
800 } elsif (!$redirect && $arg{want_body_handle}) {
801 $_[0]->on_eof (undef);
802 $_[0]->on_error (undef);
803 $_[0]->on_read (undef);
804
805 $finish->(delete $state{handle});
806
807 } elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
808 my $cl = 0;
809 my $body = undef;
810 my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
811
812 $state{read_chunk} = sub {
813 $_[1] =~ /^([0-9a-fA-F]+)/
814 or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
815
816 my $len = hex $1;
817
818 if ($len) {
819 $cl += $len;
820
821 $_[0]->push_read (chunk => $len, sub {
822 $on_body->($_[1], \%hdr)
823 or return $finish->(undef, 598 => "Request cancelled by on_body");
824
825 $_[0]->push_read (line => sub {
826 length $_[1]
827 and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
828 $_[0]->push_read (line => $state{read_chunk});
829 });
830 });
831 } else {
832 $hdr{"content-length"} ||= $cl;
833
834 $_[0]->push_read (line => $qr_nlnl, sub {
835 if (length $_[1]) {
836 for ("$_[1]") {
837 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
838
839 my $hdr = parse_hdr
840 or return $finish->(undef, $ae_error => "Garbled response trailers");
841
842 %hdr = (%hdr, %$hdr);
843 }
844 }
845
846 $finish->($body, undef, undef, 1);
847 });
848 }
849 };
850
851 $_[0]->push_read (line => $state{read_chunk});
852
853 } elsif ($arg{on_body}) {
854 if (defined $len) {
855 $_[0]->on_read (sub {
856 $len -= length $_[0]{rbuf};
857
858 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
859 or return $finish->(undef, 598 => "Request cancelled by on_body");
860
861 $len > 0
862 or $finish->("", undef, undef, 1);
863 });
864 } else {
865 $_[0]->on_eof (sub {
866 $finish->("");
867 });
868 $_[0]->on_read (sub {
869 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
870 or $finish->(undef, 598 => "Request cancelled by on_body");
871 });
872 }
873 } else {
874 $_[0]->on_eof (undef);
875
876 if (defined $len) {
877 $_[0]->on_read (sub {
878 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
879 if $len <= length $_[0]{rbuf};
880 });
881 } else {
882 $_[0]->on_error (sub {
883 ($! == Errno::EPIPE || !$!)
884 ? $finish->(delete $_[0]{rbuf})
885 : $finish->(undef, $ae_error => $_[2]);
886 });
887 $_[0]->on_read (sub { });
888 }
889 }
890 };
891
892 $state{handle}->push_read (line => $qr_nlnl, $state{read_response});
893 };
894
536 my $connect_cb = sub { 895 my $connect_cb = sub {
537 $state{fh} = shift 896 $state{fh} = shift
538 or do { 897 or do {
539 my $err = "$!"; 898 my $err = "$!";
540 %state = (); 899 %state = ();
541 return $cb->(undef, { @pseudo, Status => 599, Reason => $err }); 900 return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
542 }; 901 };
543
544 pop; # free memory, save a tree
545 902
546 return unless delete $state{connect_guard}; 903 return unless delete $state{connect_guard};
547 904
548 # get handle 905 # get handle
549 $state{handle} = new AnyEvent::Handle 906 $state{handle} = new AnyEvent::Handle
… …
552 tls_ctx => $arg{tls_ctx}, 909 tls_ctx => $arg{tls_ctx},
553 # these need to be reconfigured on keepalive handles 910 # these need to be reconfigured on keepalive handles
554 timeout => $timeout, 911 timeout => $timeout,
555 on_error => sub { 912 on_error => sub {
556 %state = (); 913 %state = ();
557 $cb->(undef, { @pseudo, Status => 599, Reason => $_[2] }); 914 $cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
558 }, 915 },
559 on_eof => sub { 916 on_eof => sub {
560 %state = (); 917 %state = ();
561 $cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" }); 918 $cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
562 }, 919 },
563 ; 920 ;
564 921
565 # limit the number of persistent connections 922 # limit the number of persistent connections
566 # keepalive not yet supported 923 # keepalive not yet supported
… …
572# $hdr{connection} = "keep-alive"; 929# $hdr{connection} = "keep-alive";
573# } 930# }
574 931
575 $state{handle}->starttls ("connect") if $rscheme eq "https"; 932 $state{handle}->starttls ("connect") if $rscheme eq "https";
576 933
577 # handle actual, non-tunneled, request
578 my $handle_actual_request = sub {
579 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
580
581 # send request
582 $state{handle}->push_write (
583 "$method $rpath HTTP/1.1\015\012"
584 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
585 . "\015\012"
586 . (delete $arg{body})
587 );
588
589 # return if error occured during push_write()
590 return unless %state;
591
592 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
593
594 # status line and headers
595 $state{read_response} = sub {
596 for ("$_[1]") {
597 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
598
599 /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
600 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
601
602 # 100 Continue handling
603 # should not happen as we don't send expect: 100-continue,
604 # but we handle it just in case.
605 # since we send the request body regardless, if we get an error
606 # we are out of-sync, which we currently do NOT handle correctly.
607 return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
608 if $2 eq 100;
609
610 push @pseudo,
611 HTTPVersion => $1,
612 Status => $2,
613 Reason => $3,
614 ;
615
616 my $hdr = parse_hdr
617 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
618
619 %hdr = (%$hdr, @pseudo);
620 }
621
622 # redirect handling
623 # microsoft and other shitheads don't give a shit for following standards,
624 # try to support some common forms of broken Location headers.
625 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
626 $hdr{location} =~ s/^\.\/+//;
627
628 my $url = "$rscheme://$uhost:$uport";
629
630 unless ($hdr{location} =~ s/^\///) {
631 $url .= $upath;
632 $url =~ s/\/[^\/]*$//;
633 }
634
635 $hdr{location} = "$url/$hdr{location}";
636 }
637
638 my $redirect;
639
640 if ($recurse) {
641 my $status = $hdr{Status};
642
643 # industry standard is to redirect POST as GET for
644 # 301, 302 and 303, in contrast to http/1.0 and 1.1.
645 # also, the UA should ask the user for 301 and 307 and POST,
646 # industry standard seems to be to simply follow.
647 # we go with the industry standard.
648 if ($status == 301 or $status == 302 or $status == 303) {
649 # HTTP/1.1 is unclear on how to mutate the method
650 $method = "GET" unless $method eq "HEAD";
651 $redirect = 1;
652 } elsif ($status == 307) {
653 $redirect = 1;
654 }
655 }
656
657 my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
658 my $keepalive = pop;
659
660 $state{handle}->destroy if $state{handle};
661 %state = ();
662
663 if (defined $_[1]) {
664 $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
665 $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
666 }
667
668 # set-cookie processing
669 if ($arg{cookie_jar}) {
670 for ($hdr{"set-cookie"}) {
671 # parse NAME=VALUE
672 my @kv;
673
674 while (
675 m{
676 \G\s*
677 (?:
678 expires \s*=\s* ([A-Z][a-z][a-z],\ [^,;]+)
679 | ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )
680 )
681 }gcxsi
682 ) {
683 my $name = $2;
684 my $value = $4;
685
686 unless (defined $name) {
687 # expires
688 $name = "expires";
689 $value = $1;
690 } elsif (!defined $value) {
691 # quoted
692 $value = $3;
693 $value =~ s/\\(.)/$1/gs;
694 }
695
696 push @kv, lc $name, $value;
697
698 last unless /\G\s*;/gc;
699 }
700
701 last unless @kv;
702
703 my $name = shift @kv;
704 my %kv = (value => shift @kv, @kv);
705
706 $kv{expires} ||= format_date (AE::now + $kv{"max-age"})
707 if exists $kv{"max-age"};
708
709 my $cdom;
710 my $cpath = (delete $kv{path}) || "/";
711
712 if (exists $kv{domain}) {
713 $cdom = delete $kv{domain};
714
715 $cdom =~ s/^\.?/./; # make sure it starts with a "."
716
717 next if $cdom =~ /\.$/;
718
719 # this is not rfc-like and not netscape-like. go figure.
720 my $ndots = $cdom =~ y/.//;
721 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
722 } else {
723 $cdom = $uhost;
724 }
725
726 # store it
727 $arg{cookie_jar}{version} = 1;
728 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
729
730 redo if /\G\s*,/gc;
731 }
732 }
733
734 if ($redirect && exists $hdr{location}) {
735 # we ignore any errors, as it is very common to receive
736 # Content-Length != 0 but no actual body
737 # we also access %hdr, as $_[1] might be an erro
738 http_request (
739 $method => $hdr{location},
740 %arg,
741 recurse => $recurse - 1,
742 Redirect => [$_[0], \%hdr],
743 $cb);
744 } else {
745 $cb->($_[0], \%hdr);
746 }
747 };
748
749 my $len = $hdr{"content-length"};
750
751 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
752 $finish->(undef, 598 => "Request cancelled by on_header");
753 } elsif (
754 $hdr{Status} =~ /^(?:1..|204|205|304)$/
755 or $method eq "HEAD"
756 or (defined $len && !$len)
757 ) {
758 # no body
759 $finish->("", undef, undef, 1);
760 } else {
761 # body handling, many different code paths
762 # - no body expected
763 # - want_body_handle
764 # - te chunked
765 # - 2x length known (with or without on_body)
766 # - 2x length not known (with or without on_body)
767 if (!$redirect && $arg{want_body_handle}) {
768 $_[0]->on_eof (undef);
769 $_[0]->on_error (undef);
770 $_[0]->on_read (undef);
771
772 $finish->(delete $state{handle});
773
774 } elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
775 my $cl = 0;
776 my $body = undef;
777 my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
778
779 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
780
781 my $read_chunk; $read_chunk = sub {
782 $_[1] =~ /^([0-9a-fA-F]+)/
783 or $finish->(undef, 599 => "Garbled chunked transfer encoding");
784
785 my $len = hex $1;
786
787 if ($len) {
788 $cl += $len;
789
790 $_[0]->push_read (chunk => $len, sub {
791 $on_body->($_[1], \%hdr)
792 or return $finish->(undef, 598 => "Request cancelled by on_body");
793
794 $_[0]->push_read (line => sub {
795 length $_[1]
796 and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
797 $_[0]->push_read (line => $read_chunk);
798 });
799 });
800 } else {
801 $hdr{"content-length"} ||= $cl;
802
803 $_[0]->push_read (line => $qr_nlnl, sub {
804 if (length $_[1]) {
805 for ("$_[1]") {
806 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
807
808 my $hdr = parse_hdr
809 or return $finish->(undef, 599 => "Garbled response trailers");
810
811 %hdr = (%hdr, %$hdr);
812 }
813 }
814
815 $finish->($body, undef, undef, 1);
816 });
817 }
818 };
819
820 $_[0]->push_read (line => $read_chunk);
821
822 } elsif ($arg{on_body}) {
823 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
824
825 if ($len) {
826 $_[0]->on_read (sub {
827 $len -= length $_[0]{rbuf};
828
829 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
830 or return $finish->(undef, 598 => "Request cancelled by on_body");
831
832 $len > 0
833 or $finish->("", undef, undef, 1);
834 });
835 } else {
836 $_[0]->on_eof (sub {
837 $finish->("");
838 });
839 $_[0]->on_read (sub {
840 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
841 or $finish->(undef, 598 => "Request cancelled by on_body");
842 });
843 }
844 } else {
845 $_[0]->on_eof (undef);
846
847 if ($len) {
848 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
849 $_[0]->on_read (sub {
850 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
851 if $len <= length $_[0]{rbuf};
852 });
853 } else {
854 $_[0]->on_error (sub {
855 ($! == Errno::EPIPE || !$!)
856 ? $finish->(delete $_[0]{rbuf})
857 : $finish->(undef, 599 => $_[2]);
858 });
859 $_[0]->on_read (sub { });
860 }
861 }
862 }
863 };
864
865 $state{handle}->push_read (line => $qr_nlnl, $state{read_response});
866 };
867
868 # now handle proxy-CONNECT method 934 # now handle proxy-CONNECT method
869 if ($proxy && $uscheme eq "https") { 935 if ($proxy && $uscheme eq "https") {
870 # oh dear, we have to wrap it into a connect request 936 # oh dear, we have to wrap it into a connect request
871 937
872 # maybe re-use $uauthority with patched port? 938 # maybe re-use $uauthority with patched port?
… …
875 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix 941 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
876 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" })); 942 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
877 943
878 if ($2 == 200) { 944 if ($2 == 200) {
879 $rpath = $upath; 945 $rpath = $upath;
880 &$handle_actual_request; 946 $handle_actual_request->();
881 } else { 947 } else {
882 %state = (); 948 %state = ();
883 $cb->(undef, { @pseudo, Status => $2, Reason => $3 }); 949 $cb->(undef, { @pseudo, Status => $2, Reason => $3 });
884 } 950 }
885 }); 951 });
886 } else { 952 } else {
887 &$handle_actual_request; 953 $handle_actual_request->();
888 } 954 }
889 }; 955 };
890 956
891 my $tcp_connect = $arg{tcp_connect} 957 my $tcp_connect = $arg{tcp_connect}
892 || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect }; 958 || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
893 959
894 $state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout }); 960 $state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout });
895
896 }; 961 };
897 962
898 defined wantarray && AnyEvent::Util::guard { %state = () } 963 defined wantarray && AnyEvent::Util::guard { %state = () }
899} 964}
900 965
… …
935string of the form C<http://host:port> (optionally C<https:...>), croaks 1000string of the form C<http://host:port> (optionally C<https:...>), croaks
936otherwise. 1001otherwise.
937 1002
938To clear an already-set proxy, use C<undef>. 1003To clear an already-set proxy, use C<undef>.
939 1004
1005=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
1006
1007Remove all cookies from the cookie jar that have been expired. If
1008C<$session_end> is given and true, then additionally remove all session
1009cookies.
1010
1011You should call this function (with a true C<$session_end>) before you
1012save cookies to disk, and you should call this function after loading them
1013again. If you have a long-running program you can additonally call this
1014function from time to time.
1015
1016A cookie jar is initially an empty hash-reference that is managed by this
1017module. It's format is subject to change, but currently it is like this:
1018
1019The key C<version> has to contain C<1>, otherwise the hash gets
1020emptied. All other keys are hostnames or IP addresses pointing to
1021hash-references. The key for these inner hash references is the
1022server path for which this cookie is meant, and the values are again
1023hash-references. The keys of those hash-references is the cookie name, and
1024the value, you guessed it, is another hash-reference, this time with the
1025key-value pairs from the cookie, except for C<expires> and C<max-age>,
1026which have been replaced by a C<_expires> key that contains the cookie
1027expiry timestamp.
1028
1029Here is an example of a cookie jar with a single cookie, so you have a
1030chance of understanding the above paragraph:
1031
1032 {
1033 version => 1,
1034 "10.0.0.1" => {
1035 "/" => {
1036 "mythweb_id" => {
1037 _expires => 1293917923,
1038 value => "ooRung9dThee3ooyXooM1Ohm",
1039 },
1040 },
1041 },
1042 }
1043
940=item $date = AnyEvent::HTTP::format_date $timestamp 1044=item $date = AnyEvent::HTTP::format_date $timestamp
941 1045
942Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP 1046Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
943Date (RFC 2616). 1047Date (RFC 2616).
944 1048
945=item $timestamp = AnyEvent::HTTP::parse_date $date 1049=item $timestamp = AnyEvent::HTTP::parse_date $date
946 1050
947Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and 1051Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
948returns the corresponding POSIX timestamp, or C<undef> if the date cannot 1052bunch of minor variations of those, and returns the corresponding POSIX
949be parsed. 1053timestamp, or C<undef> if the date cannot be parsed.
950 1054
951=item $AnyEvent::HTTP::MAX_RECURSE 1055=item $AnyEvent::HTTP::MAX_RECURSE
952 1056
953The default value for the C<recurse> request parameter (default: C<10>). 1057The default value for the C<recurse> request parameter (default: C<10>).
954 1058
… …
993sub parse_date($) { 1097sub parse_date($) {
994 my ($date) = @_; 1098 my ($date) = @_;
995 1099
996 my ($d, $m, $y, $H, $M, $S); 1100 my ($d, $m, $y, $H, $M, $S);
997 1101
998 if ($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$/) { 1102 if ($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$/) {
999 # RFC 822/1123, required by RFC 2616 (with " ") 1103 # RFC 822/1123, required by RFC 2616 (with " ")
1000 # cookie dates (with "-") 1104 # cookie dates (with "-")
1001 1105
1002 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6); 1106 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
1003 1107
1004 } elsif ($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$/) { 1108 } elsif ($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$/) {
1005 # RFC 850 1109 # RFC 850
1006 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6); 1110 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
1007 1111
1008 } elsif ($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])$/) { 1112 } elsif ($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])$/) {
1009 # ISO C's asctime 1113 # ISO C's asctime
1010 ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5); 1114 ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
1011 } 1115 }
1012 # other formats fail in the loop below 1116 # other formats fail in the loop below
1013 1117

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