ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/AnyEvent-HTTP/HTTP.pm
(Generate patch)

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.70 by root, Fri Dec 31 20:31:47 2010 UTC vs.
Revision 1.83 by root, Sun Jan 2 05:02:28 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
418sub cookie_jar_extract($$$$) {
419 my ($jar, $uscheme, $uhost, $upath) = @_;
420
421 $uhost = lc $uhost;
422
423 %$jar = () if $jar->{version} != 1;
424
425 my @cookies;
426
427 while (my ($chost, $paths) = each %$jar) {
428 next unless ref $paths;
429
430 if ($chost =~ /^\./) {
431 next unless $chost eq substr $uhost, -length $chost;
432 } elsif ($chost =~ /\./) {
433 next unless $chost eq $uhost;
434 } else {
435 next;
436 }
437
438 while (my ($cpath, $cookies) = each %$paths) {
439 next unless $cpath eq substr $upath, 0, length $cpath;
440
441 while (my ($cookie, $kv) = each %$cookies) {
442 next if $uscheme ne "https" && exists $kv->{secure};
443
444 if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
445 delete $cookies->{$cookie};
446 next;
447 }
448
449 my $value = $kv->{value};
450
451 if ($value =~ /[=;,[:space:]]/) {
452 $value =~ s/([\\"])/\\$1/g;
453 $value = "\"$value\"";
454 }
455
456 push @cookies, "$cookie=$value";
457 }
458 }
459 }
460
461 \@cookies
462}
463
464# parse set_cookie header into jar
465sub cookie_jar_set_cookie($$$$) {
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
369# continue to parse $_ for headers and place them into the arg 543# continue to parse $_ for headers and place them into the arg
370sub parse_hdr() { 544sub parse_hdr() {
371 my %hdr; 545 my %hdr;
372 546
373 # things seen, not parsed: 547 # things seen, not parsed:
… …
448 622
449 $upath =~ s%^/?%/%; 623 $upath =~ s%^/?%/%;
450 624
451 # cookie processing 625 # cookie processing
452 if (my $jar = $arg{cookie_jar}) { 626 if (my $jar = $arg{cookie_jar}) {
453 %$jar = () if $jar->{version} != 1; 627 my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
454
455 my @cookie;
456
457 while (my ($chost, $paths) = each %$jar) {
458 if ($chost =~ /^\./) {
459 next unless $chost eq substr $uhost, -length $chost;
460 } elsif ($chost =~ /\./) {
461 next unless $chost eq $uhost;
462 } else {
463 next;
464 }
465 628
466 while (my ($cpath, $cookies) = each %$paths) {
467 next unless $cpath eq substr $upath, 0, length $cpath;
468
469 while (my ($cookie, $kv) = each %$cookies) {
470 next if $uscheme ne "https" && exists $kv->{secure};
471
472 if (exists $kv->{expires}) {
473 if (AE::now > parse_date ($kv->{expires})) {
474 delete $cookies->{$cookie};
475 next;
476 }
477 }
478
479 my $value = $kv->{value};
480 $value =~ s/([\\"])/\\$1/g;
481 push @cookie, "$cookie=\"$value\"";
482 }
483 }
484 }
485
486 $hdr{cookie} = join "; ", @cookie 629 $hdr{cookie} = join "; ", @$cookies
487 if @cookie; 630 if @$cookies;
488 } 631 }
489 632
490 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path 633 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
491 634
492 if ($proxy) { 635 if ($proxy) {
… …
516 _get_slot $uhost, sub { 659 _get_slot $uhost, sub {
517 $state{slot_guard} = shift; 660 $state{slot_guard} = shift;
518 661
519 return unless $state{connect_guard}; 662 return unless $state{connect_guard};
520 663
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 = $hdr{"content-length"};
782
783 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
784 $finish->(undef, 598 => "Request cancelled by on_header");
785 } elsif (
786 $hdr{Status} =~ /^(?:1..|204|205|304)$/
787 or $method eq "HEAD"
788 or (defined $len && !$len)
789 ) {
790 # no body
791 $finish->("", undef, undef, 1);
792 } else {
793 # body handling, many different code paths
794 # - no body expected
795 # - want_body_handle
796 # - te chunked
797 # - 2x length known (with or without on_body)
798 # - 2x length not known (with or without on_body)
799 if (!$redirect && $arg{want_body_handle}) {
800 $_[0]->on_eof (undef);
801 $_[0]->on_error (undef);
802 $_[0]->on_read (undef);
803
804 $finish->(delete $state{handle});
805
806 } elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
807 my $cl = 0;
808 my $body = undef;
809 my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
810
811 $state{read_chunk} = sub {
812 $_[1] =~ /^([0-9a-fA-F]+)/
813 or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
814
815 my $len = hex $1;
816
817 if ($len) {
818 $cl += $len;
819
820 $_[0]->push_read (chunk => $len, sub {
821 $on_body->($_[1], \%hdr)
822 or return $finish->(undef, 598 => "Request cancelled by on_body");
823
824 $_[0]->push_read (line => sub {
825 length $_[1]
826 and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
827 $_[0]->push_read (line => $state{read_chunk});
828 });
829 });
830 } else {
831 $hdr{"content-length"} ||= $cl;
832
833 $_[0]->push_read (line => $qr_nlnl, sub {
834 if (length $_[1]) {
835 for ("$_[1]") {
836 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
837
838 my $hdr = parse_hdr
839 or return $finish->(undef, $ae_error => "Garbled response trailers");
840
841 %hdr = (%hdr, %$hdr);
842 }
843 }
844
845 $finish->($body, undef, undef, 1);
846 });
847 }
848 };
849
850 $_[0]->push_read (line => $state{read_chunk});
851
852 } elsif ($arg{on_body}) {
853 if ($len) {
854 $_[0]->on_read (sub {
855 $len -= length $_[0]{rbuf};
856
857 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
858 or return $finish->(undef, 598 => "Request cancelled by on_body");
859
860 $len > 0
861 or $finish->("", undef, undef, 1);
862 });
863 } else {
864 $_[0]->on_eof (sub {
865 $finish->("");
866 });
867 $_[0]->on_read (sub {
868 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
869 or $finish->(undef, 598 => "Request cancelled by on_body");
870 });
871 }
872 } else {
873 $_[0]->on_eof (undef);
874
875 if ($len) {
876 $_[0]->on_read (sub {
877 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
878 if $len <= length $_[0]{rbuf};
879 });
880 } else {
881 $_[0]->on_error (sub {
882 ($! == Errno::EPIPE || !$!)
883 ? $finish->(delete $_[0]{rbuf})
884 : $finish->(undef, $ae_error => $_[2]);
885 });
886 $_[0]->on_read (sub { });
887 }
888 }
889 }
890 };
891
892 $state{handle}->push_read (line => $qr_nlnl, $state{read_response});
893 };
894
521 my $connect_cb = sub { 895 my $connect_cb = sub {
522 $state{fh} = shift 896 $state{fh} = shift
523 or do { 897 or do {
524 my $err = "$!"; 898 my $err = "$!";
525 %state = (); 899 %state = ();
526 return $cb->(undef, { @pseudo, Status => 599, Reason => $err }); 900 return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
527 }; 901 };
528
529 pop; # free memory, save a tree
530 902
531 return unless delete $state{connect_guard}; 903 return unless delete $state{connect_guard};
532 904
533 # get handle 905 # get handle
534 $state{handle} = new AnyEvent::Handle 906 $state{handle} = new AnyEvent::Handle
… …
537 tls_ctx => $arg{tls_ctx}, 909 tls_ctx => $arg{tls_ctx},
538 # these need to be reconfigured on keepalive handles 910 # these need to be reconfigured on keepalive handles
539 timeout => $timeout, 911 timeout => $timeout,
540 on_error => sub { 912 on_error => sub {
541 %state = (); 913 %state = ();
542 $cb->(undef, { @pseudo, Status => 599, Reason => $_[2] }); 914 $cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
543 }, 915 },
544 on_eof => sub { 916 on_eof => sub {
545 %state = (); 917 %state = ();
546 $cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" }); 918 $cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
547 }, 919 },
548 ; 920 ;
549 921
550 # limit the number of persistent connections 922 # limit the number of persistent connections
551 # keepalive not yet supported 923 # keepalive not yet supported
… …
557# $hdr{connection} = "keep-alive"; 929# $hdr{connection} = "keep-alive";
558# } 930# }
559 931
560 $state{handle}->starttls ("connect") if $rscheme eq "https"; 932 $state{handle}->starttls ("connect") if $rscheme eq "https";
561 933
562 # handle actual, non-tunneled, request
563 my $handle_actual_request = sub {
564 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
565
566 # send request
567 $state{handle}->push_write (
568 "$method $rpath HTTP/1.1\015\012"
569 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
570 . "\015\012"
571 . (delete $arg{body})
572 );
573
574 # return if error occured during push_write()
575 return unless %state;
576
577 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
578
579 # status line and headers
580 $state{read_response} = sub {
581 for ("$_[1]") {
582 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
583
584 /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
585 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
586
587 # 100 Continue handling
588 # should not happen as we don't send expect: 100-continue,
589 # but we handle it just in case.
590 # since we send the request body regardless, if we get an error
591 # we are out of-sync, which we currently do NOT handle correctly.
592 return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
593 if $2 eq 100;
594
595 push @pseudo,
596 HTTPVersion => $1,
597 Status => $2,
598 Reason => $3,
599 ;
600
601 my $hdr = parse_hdr
602 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
603
604 %hdr = (%$hdr, @pseudo);
605 }
606
607 # redirect handling
608 # microsoft and other shitheads don't give a shit for following standards,
609 # try to support some common forms of broken Location headers.
610 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
611 $hdr{location} =~ s/^\.\/+//;
612
613 my $url = "$rscheme://$uhost:$uport";
614
615 unless ($hdr{location} =~ s/^\///) {
616 $url .= $upath;
617 $url =~ s/\/[^\/]*$//;
618 }
619
620 $hdr{location} = "$url/$hdr{location}";
621 }
622
623 my $redirect;
624
625 if ($recurse) {
626 my $status = $hdr{Status};
627
628 # industry standard is to redirect POST as GET for
629 # 301, 302 and 303, in contrast to http/1.0 and 1.1.
630 # also, the UA should ask the user for 301 and 307 and POST,
631 # industry standard seems to be to simply follow.
632 # we go with the industry standard.
633 if ($status == 301 or $status == 302 or $status == 303) {
634 # HTTP/1.1 is unclear on how to mutate the method
635 $method = "GET" unless $method eq "HEAD";
636 $redirect = 1;
637 } elsif ($status == 307) {
638 $redirect = 1;
639 }
640 }
641
642 my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
643 my $keepalive = pop;
644
645 $state{handle}->destroy if $state{handle};
646 %state = ();
647
648 if (defined $_[1]) {
649 $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
650 $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
651 }
652
653 # set-cookie processing
654 if ($arg{cookie_jar}) {
655 for ($hdr{"set-cookie"}) {
656 # parse NAME=VALUE
657 my @kv;
658
659 while (
660 m{
661 \G\s*
662 (?:
663 expires \s*=\s* ([A-Z][a-z][a-z],\ [^,;]+)
664 | ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )
665 )
666 }gcxsi
667 ) {
668 my $name = $2;
669 my $value = $4;
670
671 unless (defined $name) {
672 # expires
673 $name = "expires";
674 $value = $1;
675 } elsif (!defined $value) {
676 # quoted
677 $value = $3;
678 $value =~ s/\\(.)/$1/gs;
679 }
680
681 push @kv, lc $name, $value;
682
683 last unless /\G\s*;/gc;
684 }
685
686 last unless @kv;
687
688 my $name = shift @kv;
689 my %kv = (value => shift @kv, @kv);
690
691 $kv{expires} ||= format_date (AE::now + $kv{"max-age"})
692 if exists $kv{"max-age"};
693
694 my $cdom;
695 my $cpath = (delete $kv{path}) || "/";
696
697 if (exists $kv{domain}) {
698 $cdom = delete $kv{domain};
699
700 $cdom =~ s/^\.?/./; # make sure it starts with a "."
701
702 next if $cdom =~ /\.$/;
703
704 # this is not rfc-like and not netscape-like. go figure.
705 my $ndots = $cdom =~ y/.//;
706 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
707 } else {
708 $cdom = $uhost;
709 }
710
711 # store it
712 $arg{cookie_jar}{version} = 1;
713 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
714
715 redo if /\G\s*,/gc;
716 }
717 }
718
719 if ($redirect && exists $hdr{location}) {
720 # we ignore any errors, as it is very common to receive
721 # Content-Length != 0 but no actual body
722 # we also access %hdr, as $_[1] might be an erro
723 http_request (
724 $method => $hdr{location},
725 %arg,
726 recurse => $recurse - 1,
727 Redirect => [$_[0], \%hdr],
728 $cb);
729 } else {
730 $cb->($_[0], \%hdr);
731 }
732 };
733
734 my $len = $hdr{"content-length"};
735
736 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
737 $finish->(undef, 598 => "Request cancelled by on_header");
738 } elsif (
739 $hdr{Status} =~ /^(?:1..|204|205|304)$/
740 or $method eq "HEAD"
741 or (defined $len && !$len)
742 ) {
743 # no body
744 $finish->("", undef, undef, 1);
745 } else {
746 # body handling, many different code paths
747 # - no body expected
748 # - want_body_handle
749 # - te chunked
750 # - 2x length known (with or without on_body)
751 # - 2x length not known (with or without on_body)
752 if (!$redirect && $arg{want_body_handle}) {
753 $_[0]->on_eof (undef);
754 $_[0]->on_error (undef);
755 $_[0]->on_read (undef);
756
757 $finish->(delete $state{handle});
758
759 } elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
760 my $cl = 0;
761 my $body = undef;
762 my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
763
764 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
765
766 my $read_chunk; $read_chunk = sub {
767 $_[1] =~ /^([0-9a-fA-F]+)/
768 or $finish->(undef, 599 => "Garbled chunked transfer encoding");
769
770 my $len = hex $1;
771
772 if ($len) {
773 $cl += $len;
774
775 $_[0]->push_read (chunk => $len, sub {
776 $on_body->($_[1], \%hdr)
777 or return $finish->(undef, 598 => "Request cancelled by on_body");
778
779 $_[0]->push_read (line => sub {
780 length $_[1]
781 and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
782 $_[0]->push_read (line => $read_chunk);
783 });
784 });
785 } else {
786 $hdr{"content-length"} ||= $cl;
787
788 $_[0]->push_read (line => $qr_nlnl, sub {
789 if (length $_[1]) {
790 for ("$_[1]") {
791 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
792
793 my $hdr = parse_hdr
794 or return $finish->(undef, 599 => "Garbled response trailers");
795
796 %hdr = (%hdr, %$hdr);
797 }
798 }
799
800 $finish->($body, undef, undef, 1);
801 });
802 }
803 };
804
805 $_[0]->push_read (line => $read_chunk);
806
807 } elsif ($arg{on_body}) {
808 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
809
810 if ($len) {
811 $_[0]->on_read (sub {
812 $len -= length $_[0]{rbuf};
813
814 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
815 or return $finish->(undef, 598 => "Request cancelled by on_body");
816
817 $len > 0
818 or $finish->("", undef, undef, 1);
819 });
820 } else {
821 $_[0]->on_eof (sub {
822 $finish->("");
823 });
824 $_[0]->on_read (sub {
825 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
826 or $finish->(undef, 598 => "Request cancelled by on_body");
827 });
828 }
829 } else {
830 $_[0]->on_eof (undef);
831
832 if ($len) {
833 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
834 $_[0]->on_read (sub {
835 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
836 if $len <= length $_[0]{rbuf};
837 });
838 } else {
839 $_[0]->on_error (sub {
840 ($! == Errno::EPIPE || !$!)
841 ? $finish->(delete $_[0]{rbuf})
842 : $finish->(undef, 599 => $_[2]);
843 });
844 $_[0]->on_read (sub { });
845 }
846 }
847 }
848 };
849
850 $state{handle}->push_read (line => $qr_nlnl, $state{read_response});
851 };
852
853 # now handle proxy-CONNECT method 934 # now handle proxy-CONNECT method
854 if ($proxy && $uscheme eq "https") { 935 if ($proxy && $uscheme eq "https") {
855 # oh dear, we have to wrap it into a connect request 936 # oh dear, we have to wrap it into a connect request
856 937
857 # maybe re-use $uauthority with patched port? 938 # maybe re-use $uauthority with patched port?
… …
860 $_[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
861 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])" }));
862 943
863 if ($2 == 200) { 944 if ($2 == 200) {
864 $rpath = $upath; 945 $rpath = $upath;
865 &$handle_actual_request; 946 $handle_actual_request->();
866 } else { 947 } else {
867 %state = (); 948 %state = ();
868 $cb->(undef, { @pseudo, Status => $2, Reason => $3 }); 949 $cb->(undef, { @pseudo, Status => $2, Reason => $3 });
869 } 950 }
870 }); 951 });
871 } else { 952 } else {
872 &$handle_actual_request; 953 $handle_actual_request->();
873 } 954 }
874 }; 955 };
875 956
876 my $tcp_connect = $arg{tcp_connect} 957 my $tcp_connect = $arg{tcp_connect}
877 || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect }; 958 || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
878 959
879 $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 });
880
881 }; 961 };
882 962
883 defined wantarray && AnyEvent::Util::guard { %state = () } 963 defined wantarray && AnyEvent::Util::guard { %state = () }
884} 964}
885 965
… …
920string of the form C<http://host:port> (optionally C<https:...>), croaks 1000string of the form C<http://host:port> (optionally C<https:...>), croaks
921otherwise. 1001otherwise.
922 1002
923To clear an already-set proxy, use C<undef>. 1003To clear an already-set proxy, use C<undef>.
924 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
925=item $date = AnyEvent::HTTP::format_date $timestamp 1044=item $date = AnyEvent::HTTP::format_date $timestamp
926 1045
927Takes 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
928Date (RFC 2616). 1047Date (RFC 2616).
929 1048
930=item $timestamp = AnyEvent::HTTP::parse_date $date 1049=item $timestamp = AnyEvent::HTTP::parse_date $date
931 1050
932Takes 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
933returns the corresponding POSIX timestamp, or C<undef> if the date cannot 1052bunch of minor variations of those, and returns the corresponding POSIX
934be parsed. 1053timestamp, or C<undef> if the date cannot be parsed.
935 1054
936=item $AnyEvent::HTTP::MAX_RECURSE 1055=item $AnyEvent::HTTP::MAX_RECURSE
937 1056
938The default value for the C<recurse> request parameter (default: C<10>). 1057The default value for the C<recurse> request parameter (default: C<10>).
939 1058
… …
978sub parse_date($) { 1097sub parse_date($) {
979 my ($date) = @_; 1098 my ($date) = @_;
980 1099
981 my ($d, $m, $y, $H, $M, $S); 1100 my ($d, $m, $y, $H, $M, $S);
982 1101
983 if ($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$/) {
984 # RFC 822/1123, required by RFC 2616 (with " ") 1103 # RFC 822/1123, required by RFC 2616 (with " ")
985 # cookie dates (with "-") 1104 # cookie dates (with "-")
986 1105
987 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6); 1106 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
988 1107
989 } elsif ($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$/) {
990 # RFC 850 1109 # RFC 850
991 ($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, $6);
992 1111
993 } elsif ($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])$/) {
994 # ISO C's asctime 1113 # ISO C's asctime
995 ($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);
996 } 1115 }
997 # other formats fail in the loop below 1116 # other formats fail in the loop below
998 1117

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines