[ViewVC] Diff of: cvs/AnyEvent-HTTP/HTTP.pm

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC vs.
Revision 1.88 by root, Sun Jan 2 20:57:03 2011 UTC

…		…
36		36
37	=cut	37	=cut
38		38
39	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
40		40
41	use strict;	41	use common::sense;
42	no warnings;
43		42
44	use Errno ();	43	use Errno ();
45		44
46	use AnyEvent 5.0 ();	45	use AnyEvent 5.0 ();
47	use AnyEvent::Util ();	46	use AnyEvent::Util ();
…		…
58	our $MAX_PERSISTENT = 8;	57	our $MAX_PERSISTENT = 8;
59	our $PERSISTENT_TIMEOUT = 2;	58	our $PERSISTENT_TIMEOUT = 2;
60	our $TIMEOUT = 300;	59	our $TIMEOUT = 300;
61		60
62	# changing these is evil	61	# changing these is evil
63	our $MAX_PERSISTENT_PER_HOST = 0;	62	our $MAX_PERSISTENT_PER_HOST = 2;
64	our $MAX_PER_HOST = 4;	63	our $MAX_PER_HOST = 4;
65		64
66	our $PROXY;	65	our $PROXY;
67	our $ACTIVE = 0;	66	our $ACTIVE = 0;
68		67
…		…
122		121
123	If the server sends a header multiple times, then their contents will be	122	If the server sends a header multiple times, then their contents will be
124	joined together with a comma (C<,>), as per the HTTP spec.	123	joined together with a comma (C<,>), as per the HTTP spec.
125		124
126	If an internal error occurs, such as not being able to resolve a hostname,	125	If an internal error occurs, such as not being able to resolve a hostname,
127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>	126	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
128	(usually C<599>) and the C<Reason> pseudo-header will contain an error	127	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
129	message.	128	message. Currently the following status codes are used:
		129
		130	=over 4
		131
		132	=item 595 - errors during connection etsbalishment, proxy handshake.
		133
		134	=item 596 - errors during TLS negotiation, request sending and header processing.
		135
		136	=item 597 - errors during body receiving or processing.
		137
		138	=item 598 - user aborted request via C<on_header> or C<on_body>.
		139
		140	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		141
		142	=back
130		143
131	A typical callback might look like this:	144	A typical callback might look like this:
132		145
133	sub {	146	sub {
134	my ($body, $hdr) = @_;	147	my ($body, $hdr) = @_;
…		…
152		165
153	=item headers => hashref	166	=item headers => hashref
154		167
155	The request headers to use. Currently, C<http_request> may provide its own	168	The request headers to use. Currently, C<http_request> may provide its own
156	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and	169	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
157	will provide defaults for C<TE:>, C<Referer:> and C<User-Agent:> (this can	170	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
158	be suppressed by using C<undef> for these headers in which case they won't	171	(this can be suppressed by using C<undef> for these headers in which case
159	be sent at all).	172	they won't be sent at all).
160		173
161	=item timeout => $seconds	174	=item timeout => $seconds
162		175
163	The time-out to use for various stages - each connect attempt will reset	176	The time-out to use for various stages - each connect attempt will reset
164	the timeout, as will read or write activity, i.e. this is not an overall	177	the timeout, as will read or write activity, i.e. this is not an overall
…		…
182	=item cookie_jar => $hash_ref	195	=item cookie_jar => $hash_ref
183		196
184	Passing this parameter enables (simplified) cookie-processing, loosely	197	Passing this parameter enables (simplified) cookie-processing, loosely
185	based on the original netscape specification.	198	based on the original netscape specification.
186		199
187	The C<$hash_ref> must be an (initially empty) hash reference which will	200	The C<$hash_ref> must be an (initially empty) hash reference which
188	get updated automatically. It is possible to save the cookie_jar to	201	will get updated automatically. It is possible to save the cookie jar
189	persistent storage with something like JSON or Storable, but this is not	202	to persistent storage with something like JSON or Storable - see the
190	recommended, as expiry times are currently being ignored.	203	C<AnyEvent::HTTP::cookie_jar_expire> function if you wish to remove
		204	expired or session-only cookies, and also for documentation on the format
		205	of the cookie jar.
191		206
192	Note that this cookie implementation is not of very high quality, nor	207	Note that this cookie implementation is not meant to be complete. If
193	meant to be complete. If you want complete cookie management you have to	208	you want complete cookie management you have to do that on your
194	do that on your own. C<cookie_jar> is meant as a quick fix to get some	209	own. C<cookie_jar> is meant as a quick fix to get most cookie-using sites
195	cookie-using sites working. Cookies are a privacy disaster, do not use	210	working. Cookies are a privacy disaster, do not use them unless required
196	them unless required to.	211	to.
		212
		213	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		214	headers will be set and handled by this module, otherwise they will be
		215	left untouched.
197		216
198	=item tls_ctx => $scheme \| $tls_ctx	217	=item tls_ctx => $scheme \| $tls_ctx
199		218
200	Specifies the AnyEvent::TLS context to be used for https connections. This	219	Specifies the AnyEvent::TLS context to be used for https connections. This
201	parameter follows the same rules as the C<tls_ctx> parameter to	220	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
360	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	379	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
361		380
362	_slot_schedule $_[0];	381	_slot_schedule $_[0];
363	}	382	}
364		383
		384	#############################################################################
		385
		386	# expire cookies
		387	sub cookie_jar_expire($;$) {
		388	my ($jar, $session_end) = @_;
		389
		390	%$jar = () if $jar->{version} != 1;
		391
		392	my $anow = AE::now;
		393
		394	while (my ($chost, $paths) = each %$jar) {
		395	next unless ref $paths;
		396
		397	while (my ($cpath, $cookies) = each %$paths) {
		398	while (my ($cookie, $kv) = each %$cookies) {
		399	if (exists $kv->{_expires}) {
		400	delete $cookies->{$cookie}
		401	if $anow > $kv->{_expires};
		402	} elsif ($session_end) {
		403	delete $cookies->{$cookie};
		404	}
		405	}
		406
		407	delete $paths->{$cpath}
		408	unless %$cookies;
		409	}
		410
		411	delete $jar->{$chost}
		412	unless %$paths;
		413	}
		414	}
		415
		416	# extract cookies from jar
		417	sub cookie_jar_extract($$$$) {
		418	my ($jar, $uscheme, $uhost, $upath) = @_;
		419
		420	%$jar = () if $jar->{version} != 1;
		421
		422	my @cookies;
		423
		424	while (my ($chost, $paths) = each %$jar) {
		425	next unless ref $paths;
		426
		427	if ($chost =~ /^\./) {
		428	next unless $chost eq substr $uhost, -length $chost;
		429	} elsif ($chost =~ /\./) {
		430	next unless $chost eq $uhost;
		431	} else {
		432	next;
		433	}
		434
		435	while (my ($cpath, $cookies) = each %$paths) {
		436	next unless $cpath eq substr $upath, 0, length $cpath;
		437
		438	while (my ($cookie, $kv) = each %$cookies) {
		439	next if $uscheme ne "https" && exists $kv->{secure};
		440
		441	if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
		442	delete $cookies->{$cookie};
		443	next;
		444	}
		445
		446	my $value = $kv->{value};
		447
		448	if ($value =~ /[=;,[:space:]]/) {
		449	$value =~ s/([\\"])/\\$1/g;
		450	$value = "\"$value\"";
		451	}
		452
		453	push @cookies, "$cookie=$value";
		454	}
		455	}
		456	}
		457
		458	\@cookies
		459	}
		460
		461	# parse set_cookie header into jar
		462	sub cookie_jar_set_cookie($$$$) {
		463	my ($jar, $set_cookie, $uhost, $date) = @_;
		464
		465	my $anow = int AE::now;
		466	my $snow; # server-now
		467
		468	for ($set_cookie) {
		469	# parse NAME=VALUE
		470	my @kv;
		471
		472	# expires is not http-compliant in the original cookie-spec,
		473	# we support the official date format and some extensions
		474	while (
		475	m{
		476	\G\s*
		477	(?:
		478	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
		479	\| ([^=;,[:space:]]+) (?: \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) ) )?
		480	)
		481	}gcxsi
		482	) {
		483	my $name = $2;
		484	my $value = $4;
		485
		486	if (defined $1) {
		487	# expires
		488	$name = "expires";
		489	$value = $1;
		490	} elsif (defined $3) {
		491	# quoted
		492	$value = $3;
		493	$value =~ s/\\(.)/$1/gs;
		494	}
		495
		496	push @kv, lc $name, $value;
		497
		498	last unless /\G\s*;/gc;
		499	}
		500
		501	last unless @kv;
		502
		503	my $name = shift @kv;
		504	my %kv = (value => shift @kv, @kv);
		505
		506	if (exists $kv{"max-age"}) {
		507	$kv{_expires} = $anow + delete $kv{"max-age"};
		508	} elsif (exists $kv{expires}) {
		509	$snow \|\|= parse_date ($date) \|\| $anow;
		510	$kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow);
		511	} else {
		512	delete $kv{_expires};
		513	}
		514
		515	my $cdom;
		516	my $cpath = (delete $kv{path}) \|\| "/";
		517
		518	if (exists $kv{domain}) {
		519	$cdom = delete $kv{domain};
		520
		521	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		522
		523	next if $cdom =~ /\.$/;
		524
		525	# this is not rfc-like and not netscape-like. go figure.
		526	my $ndots = $cdom =~ y/.//;
		527	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		528	} else {
		529	$cdom = $uhost;
		530	}
		531
		532	# store it
		533	$jar->{version} = 1;
		534	$jar->{lc $cdom}{$cpath}{$name} = \%kv;
		535
		536	redo if /\G\s*,/gc;
		537	}
		538	}
		539
365	# continue to parse $_ for headers and place them into the arg	540	# continue to parse $_ for headers and place them into the arg
366	sub parse_hdr() {	541	sub parse_hdr() {
367	my %hdr;	542	my %hdr;
368		543
369	# things seen, not parsed:	544	# things seen, not parsed:
…		…
431	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });	606	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
432		607
433	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	608	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
434	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });	609	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
435		610
436	my $uhost = $1;	611	my $uhost = lc $1;
437	$uport = $2 if defined $2;	612	$uport = $2 if defined $2;
438		613
439	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	614	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
440	unless exists $hdr{host};	615	unless exists $hdr{host};
441		616
…		…
444		619
445	$upath =~ s%^/?%/%;	620	$upath =~ s%^/?%/%;
446		621
447	# cookie processing	622	# cookie processing
448	if (my $jar = $arg{cookie_jar}) {	623	if (my $jar = $arg{cookie_jar}) {
449	%$jar = () if $jar->{version} != 1;	624	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
450		625
451	my @cookie;
452
453	while (my ($chost, $v) = each %$jar) {
454	if ($chost =~ /^\./) {
455	next unless $chost eq substr $uhost, -length $chost;
456	} elsif ($chost =~ /\./) {
457	next unless $chost eq $uhost;
458	} else {
459	next;
460	}
461
462	while (my ($cpath, $v) = each %$v) {
463	next unless $cpath eq substr $upath, 0, length $cpath;
464
465	while (my ($k, $v) = each %$v) {
466	next if $uscheme ne "https" && exists $v->{secure};
467	my $value = $v->{value};
468	$value =~ s/([\\"])/\\$1/g;
469	push @cookie, "$k=\"$value\"";
470	}
471	}
472	}
473
474	$hdr{cookie} = join "; ", @cookie	626	$hdr{cookie} = join "; ", @$cookies
475	if @cookie;	627	if @$cookies;
476	}	628	}
477		629
478	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	630	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
479		631
480	if ($proxy) {	632	if ($proxy) {
…		…
483	$rscheme = "http" unless defined $rscheme;	635	$rscheme = "http" unless defined $rscheme;
484		636
485	# don't support https requests over https-proxy transport,	637	# don't support https requests over https-proxy transport,
486	# can't be done with tls as spec'ed, unless you double-encrypt.	638	# can't be done with tls as spec'ed, unless you double-encrypt.
487	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	639	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
		640
		641	$rhost = lc $rhost;
		642	$rscheme = lc $rscheme;
488	} else {	643	} else {
489	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	644	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
490	}	645	}
491		646
492	# leave out fragment and query string, just a heuristic	647	# leave out fragment and query string, just a heuristic
…		…
494	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};	649	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
495		650
496	$hdr{"content-length"} = length $arg{body}	651	$hdr{"content-length"} = length $arg{body}
497	if length $arg{body} \|\| $method ne "GET";	652	if length $arg{body} \|\| $method ne "GET";
498		653
499	$hdr{connection} = "close TE"; #1.1	654	$hdr{connection} = "close Te"; #1.1
500	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1	655	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
501		656
502	my %state = (connect_guard => 1);	657	my %state = (connect_guard => 1);
503		658
504	_get_slot $uhost, sub {	659	my $ae_error = 595; # connecting
505	$state{slot_guard} = shift;
506		660
		661	# handle actual, non-tunneled, request
		662	my $handle_actual_request = sub {
		663	$ae_error = 596; # request phase
		664
		665	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		666
		667	# send request
		668	$state{handle}->push_write (
		669	"$method $rpath HTTP/1.1\015\012"
		670	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
		671	. "\015\012"
		672	. (delete $arg{body})
		673	);
		674
		675	# return if error occured during push_write()
507	return unless $state{connect_guard};	676	return unless %state;
508		677
509	my $connect_cb = sub {	678	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
510	$state{fh} = shift	679
		680	# status line and headers
		681	$state{read_response} = sub {
		682	for ("$_[1]") {
		683	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		684
		685	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
		686	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
		687
		688	# 100 Continue handling
		689	# should not happen as we don't send expect: 100-continue,
		690	# but we handle it just in case.
		691	# since we send the request body regardless, if we get an error
		692	# we are out of-sync, which we currently do NOT handle correctly.
		693	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		694	if $2 eq 100;
		695
		696	push @pseudo,
		697	HTTPVersion => $1,
		698	Status => $2,
		699	Reason => $3,
511	or do {	700	;
512	my $err = "$!";	701
		702	my $hdr = parse_hdr
		703	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		704
		705	%hdr = (%$hdr, @pseudo);
		706	}
		707
		708	# redirect handling
		709	# microsoft and other shitheads don't give a shit for following standards,
		710	# try to support some common forms of broken Location headers.
		711	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		712	$hdr{location} =~ s/^\.\/+//;
		713
		714	my $url = "$rscheme://$uhost:$uport";
		715
		716	unless ($hdr{location} =~ s/^\///) {
		717	$url .= $upath;
		718	$url =~ s/\/[^\/]*$//;
		719	}
		720
		721	$hdr{location} = "$url/$hdr{location}";
		722	}
		723
		724	my $redirect;
		725
		726	if ($recurse) {
		727	my $status = $hdr{Status};
		728
		729	# industry standard is to redirect POST as GET for
		730	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		731	# also, the UA should ask the user for 301 and 307 and POST,
		732	# industry standard seems to be to simply follow.
		733	# we go with the industry standard.
		734	if ($status == 301 or $status == 302 or $status == 303) {
		735	# HTTP/1.1 is unclear on how to mutate the method
		736	$method = "GET" unless $method eq "HEAD";
		737	$redirect = 1;
		738	} elsif ($status == 307) {
		739	$redirect = 1;
		740	}
		741	}
		742
		743	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		744	my $may_keep_alive = $_[3];
		745
		746	$state{handle}->destroy if $state{handle};
513	%state = ();	747	%state = ();
514	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });	748
		749	if (defined $_[1]) {
		750	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		751	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		752	}
		753
		754	# set-cookie processing
		755	if ($arg{cookie_jar}) {
		756	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost, $hdr{date};
		757	}
		758
		759	if ($redirect && exists $hdr{location}) {
		760	# we ignore any errors, as it is very common to receive
		761	# Content-Length != 0 but no actual body
		762	# we also access %hdr, as $_[1] might be an erro
		763	http_request (
		764	$method => $hdr{location},
		765	%arg,
		766	recurse => $recurse - 1,
		767	Redirect => [$_[0], \%hdr],
		768	$cb);
		769	} else {
		770	$cb->($_[0], \%hdr);
		771	}
		772	};
		773
		774	$ae_error = 597; # body phase
		775
		776	my $len = $hdr{"content-length"};
		777
		778	# body handling, many different code paths
		779	# - no body expected
		780	# - want_body_handle
		781	# - te chunked
		782	# - 2x length known (with or without on_body)
		783	# - 2x length not known (with or without on_body)
		784	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		785	$finish->(undef, 598 => "Request cancelled by on_header");
		786	} elsif (
		787	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		788	or $method eq "HEAD"
		789	or (defined $len && $len == 0) # == 0, not !, because "0 " is true
		790	) {
		791	# no body
		792	$finish->("", undef, undef, 1);
		793
		794	} elsif (!$redirect && $arg{want_body_handle}) {
		795	$_[0]->on_eof (undef);
		796	$_[0]->on_error (undef);
		797	$_[0]->on_read (undef);
		798
		799	$finish->(delete $state{handle});
		800
		801	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		802	my $cl = 0;
		803	my $body = undef;
		804	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		805
		806	$state{read_chunk} = sub {
		807	$_[1] =~ /^([0-9a-fA-F]+)/
		808	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		809
		810	my $len = hex $1;
		811
		812	if ($len) {
		813	$cl += $len;
		814
		815	$_[0]->push_read (chunk => $len, sub {
		816	$on_body->($_[1], \%hdr)
		817	or return $finish->(undef, 598 => "Request cancelled by on_body");
		818
		819	$_[0]->push_read (line => sub {
		820	length $_[1]
		821	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		822	$_[0]->push_read (line => $state{read_chunk});
		823	});
		824	});
		825	} else {
		826	$hdr{"content-length"} \|\|= $cl;
		827
		828	$_[0]->push_read (line => $qr_nlnl, sub {
		829	if (length $_[1]) {
		830	for ("$_[1]") {
		831	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		832
		833	my $hdr = parse_hdr
		834	or return $finish->(undef, $ae_error => "Garbled response trailers");
		835
		836	%hdr = (%hdr, %$hdr);
		837	}
		838	}
		839
		840	$finish->($body, undef, undef, 1);
		841	});
		842	}
515	};	843	};
516		844
517	pop; # free memory, save a tree	845	$_[0]->push_read (line => $state{read_chunk});
518		846
		847	} elsif ($arg{on_body}) {
		848	if (defined $len) {
		849	$_[0]->on_read (sub {
		850	$len -= length $_[0]{rbuf};
		851
		852	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		853	or return $finish->(undef, 598 => "Request cancelled by on_body");
		854
		855	$len > 0
		856	or $finish->("", undef, undef, 1);
		857	});
		858	} else {
		859	$_[0]->on_eof (sub {
		860	$finish->("");
		861	});
		862	$_[0]->on_read (sub {
		863	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		864	or $finish->(undef, 598 => "Request cancelled by on_body");
		865	});
		866	}
		867	} else {
		868	$_[0]->on_eof (undef);
		869
		870	if (defined $len) {
		871	$_[0]->on_read (sub {
		872	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		873	if $len <= length $_[0]{rbuf};
		874	});
		875	} else {
		876	$_[0]->on_error (sub {
		877	($! == Errno::EPIPE \|\| !$!)
		878	? $finish->(delete $_[0]{rbuf})
		879	: $finish->(undef, $ae_error => $_[2]);
		880	});
		881	$_[0]->on_read (sub { });
		882	}
		883	}
		884	};
		885
		886	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		887	};
		888
		889	my $connect_cb = sub {
		890	$state{fh} = shift
		891	or do {
		892	my $err = "$!";
		893	%state = ();
		894	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
		895	};
		896
519	return unless delete $state{connect_guard};	897	return unless delete $state{connect_guard};
520		898
521	# get handle	899	# get handle
522	$state{handle} = new AnyEvent::Handle	900	$state{handle} = new AnyEvent::Handle
523	fh => $state{fh},	901	fh => $state{fh},
524	peername => $rhost,	902	peername => $rhost,
525	tls_ctx => $arg{tls_ctx},	903	tls_ctx => $arg{tls_ctx},
526	# these need to be reconfigured on keepalive handles	904	# these need to be reconfigured on keepalive handles
527	timeout => $timeout,	905	timeout => $timeout,
528	on_error => sub {	906	on_error => sub {
529	%state = ();	907	%state = ();
530	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });	908	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
531	},	909	},
532	on_eof => sub {	910	on_eof => sub {
533	%state = ();	911	%state = ();
534	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });	912	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
535	},	913	},
536	;	914	;
537		915
538	# limit the number of persistent connections	916	# limit the number of persistent connections
539	# keepalive not yet supported	917	# keepalive not yet supported
540	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	918	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
541	# ++$KA_COUNT{$_[1]};	919	# ++$KA_COUNT{$_[1]};
542	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	920	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
543	# --$KA_COUNT{$_[1]}	921	# --$KA_COUNT{$_[1]}
544	# };	922	# };
545	# $hdr{connection} = "keep-alive";	923	# $hdr{connection} = "keep-alive";
546	# }	924	# }
547		925
548	$state{handle}->starttls ("connect") if $rscheme eq "https";	926	$state{handle}->starttls ("connect") if $rscheme eq "https";
549		927
550	# handle actual, non-tunneled, request
551	my $handle_actual_request = sub {
552	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
553
554	# send request
555	$state{handle}->push_write (
556	"$method $rpath HTTP/1.1\015\012"
557	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
558	. "\015\012"
559	. (delete $arg{body})
560	);
561
562	# return if error occured during push_write()
563	return unless %state;
564
565	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
566
567	# status line and headers
568	$state{read_response} = sub {
569	for ("$_[1]") {
570	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
571
572	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
573	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
574
575	# 100 Continue handling
576	# should not happen as we don't send expect: 100-continue,
577	# but we handle it just in case.
578	# since we send the request body regardless, if we get an error
579	# we are out of-sync, which we currently do NOT handle correctly.
580	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
581	if $2 eq 100;
582
583	push @pseudo,
584	HTTPVersion => $1,
585	Status => $2,
586	Reason => $3,
587	;
588
589	my $hdr = parse_hdr
590	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
591
592	%hdr = (%$hdr, @pseudo);
593	}
594
595	# redirect handling
596	# microsoft and other shitheads don't give a shit for following standards,
597	# try to support some common forms of broken Location headers.
598	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
599	$hdr{location} =~ s/^\.\/+//;
600
601	my $url = "$rscheme://$uhost:$uport";
602
603	unless ($hdr{location} =~ s/^\///) {
604	$url .= $upath;
605	$url =~ s/\/[^\/]*$//;
606	}
607
608	$hdr{location} = "$url/$hdr{location}";
609	}
610
611	my $redirect;
612
613	if ($recurse) {
614	my $status = $hdr{Status};
615
616	# industry standard is to redirect POST as GET for
617	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
618	# also, the UA should ask the user for 301 and 307 and POST,
619	# industry standard seems to be to simply follow.
620	# we go with the industry standard.
621	if ($status == 301 or $status == 302 or $status == 303) {
622	# HTTP/1.1 is unclear on how to mutate the method
623	$method = "GET" unless $method eq "HEAD";
624	$redirect = 1;
625	} elsif ($status == 307) {
626	$redirect = 1;
627	}
628	}
629
630	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
631	my $keepalive = pop;
632
633	$state{handle}->destroy if $state{handle};
634	%state = ();
635
636	if (defined $_[1]) {
637	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
638	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
639	}
640
641	# set-cookie processing
642	if ($arg{cookie_jar}) {
643	for ($hdr{"set-cookie"}) {
644	# parse NAME=VALUE
645	my @kv;
646
647	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
648	my $name = $1;
649	my $value = $3;
650
651	unless ($value) {
652	$value = $2;
653	$value =~ s/\\(.)/$1/gs;
654	}
655
656	push @kv, $name => $value;
657
658	last unless /\G\s*;/gc;
659	}
660
661	last unless @kv;
662
663	my $name = shift @kv;
664	my %kv = (value => shift @kv, @kv);
665
666	my $cdom;
667	my $cpath = (delete $kv{path}) \|\| "/";
668
669	if (exists $kv{domain}) {
670	$cdom = delete $kv{domain};
671
672	$cdom =~ s/^\.?/./; # make sure it starts with a "."
673
674	next if $cdom =~ /\.$/;
675
676	# this is not rfc-like and not netscape-like. go figure.
677	my $ndots = $cdom =~ y/.//;
678	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
679	} else {
680	$cdom = $uhost;
681	}
682
683	# store it
684	$arg{cookie_jar}{version} = 1;
685	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
686
687	redo if /\G\s*,/gc;
688	}
689	}
690
691	if ($redirect && exists $hdr{location}) {
692	# we ignore any errors, as it is very common to receive
693	# Content-Length != 0 but no actual body
694	# we also access %hdr, as $_[1] might be an erro
695	http_request (
696	$method => $hdr{location},
697	%arg,
698	recurse => $recurse - 1,
699	Redirect => [$_[0], \%hdr],
700	$cb);
701	} else {
702	$cb->($_[0], \%hdr);
703	}
704	};
705
706	my $len = $hdr{"content-length"};
707
708	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
709	$finish->(undef, 598 => "Request cancelled by on_header");
710	} elsif (
711	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
712	or $method eq "HEAD"
713	or (defined $len && !$len)
714	) {
715	# no body
716	$finish->("", undef, undef, 1);
717	} else {
718	# body handling, many different code paths
719	# - no body expected
720	# - want_body_handle
721	# - te chunked
722	# - 2x length known (with or without on_body)
723	# - 2x length not known (with or without on_body)
724	if (!$redirect && $arg{want_body_handle}) {
725	$_[0]->on_eof (undef);
726	$_[0]->on_error (undef);
727	$_[0]->on_read (undef);
728
729	$finish->(delete $state{handle});
730
731	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
732	my $cl = 0;
733	my $body = undef;
734	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
735
736	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
737
738	my $read_chunk; $read_chunk = sub {
739	$_[1] =~ /^([0-9a-fA-F]+)/
740	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
741
742	my $len = hex $1;
743
744	if ($len) {
745	$cl += $len;
746
747	$_[0]->push_read (chunk => $len, sub {
748	$on_body->($_[1], \%hdr)
749	or return $finish->(undef, 598 => "Request cancelled by on_body");
750
751	$_[0]->push_read (line => sub {
752	length $_[1]
753	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
754	$_[0]->push_read (line => $read_chunk);
755	});
756	});
757	} else {
758	$hdr{"content-length"} \|\|= $cl;
759
760	$_[0]->push_read (line => $qr_nlnl, sub {
761	if (length $_[1]) {
762	for ("$_[1]") {
763	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
764
765	my $hdr = parse_hdr
766	or return $finish->(undef, 599 => "Garbled response trailers");
767
768	%hdr = (%hdr, %$hdr);
769	}
770	}
771
772	$finish->($body, undef, undef, 1);
773	});
774	}
775	};
776
777	$_[0]->push_read (line => $read_chunk);
778
779	} elsif ($arg{on_body}) {
780	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
781
782	if ($len) {
783	$_[0]->on_read (sub {
784	$len -= length $_[0]{rbuf};
785
786	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
787	or return $finish->(undef, 598 => "Request cancelled by on_body");
788
789	$len > 0
790	or $finish->("", undef, undef, 1);
791	});
792	} else {
793	$_[0]->on_eof (sub {
794	$finish->("");
795	});
796	$_[0]->on_read (sub {
797	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
798	or $finish->(undef, 598 => "Request cancelled by on_body");
799	});
800	}
801	} else {
802	$_[0]->on_eof (undef);
803
804	if ($len) {
805	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
806	$_[0]->on_read (sub {
807	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
808	if $len <= length $_[0]{rbuf};
809	});
810	} else {
811	$_[0]->on_error (sub {
812	($! == Errno::EPIPE \|\| !$!)
813	? $finish->(delete $_[0]{rbuf})
814	: $finish->(undef, 599 => $_[2]);
815	});
816	$_[0]->on_read (sub { });
817	}
818	}
819	}
820	};
821
822	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
823	};
824
825	# now handle proxy-CONNECT method	928	# now handle proxy-CONNECT method
826	if ($proxy && $uscheme eq "https") {	929	if ($proxy && $uscheme eq "https") {
827	# oh dear, we have to wrap it into a connect request	930	# oh dear, we have to wrap it into a connect request
828		931
829	# maybe re-use $uauthority with patched port?	932	# maybe re-use $uauthority with patched port?
830	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	933	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012\015\012");
831	$state{handle}->push_read (line => $qr_nlnl, sub {	934	$state{handle}->push_read (line => $qr_nlnl, sub {
832	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	935	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
833	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));	936	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
834		937
835	if ($2 == 200) {	938	if ($2 == 200) {
836	$rpath = $upath;	939	$rpath = $upath;
837	&$handle_actual_request;	940	$handle_actual_request->();
838	} else {	941	} else {
839	%state = ();	942	%state = ();
840	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });	943	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
841	}
842	});	944	}
843	} else {
844	&$handle_actual_request;
845	}	945	});
		946	} else {
		947	$handle_actual_request->();
846	};	948	}
		949	};
		950
		951	_get_slot $uhost, sub {
		952	$state{slot_guard} = shift;
		953
		954	return unless $state{connect_guard};
847		955
848	my $tcp_connect = $arg{tcp_connect}	956	my $tcp_connect = $arg{tcp_connect}
849	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };	957	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
850		958
851	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });	959	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
852
853	};	960	};
854		961
855	defined wantarray && AnyEvent::Util::guard { %state = () }	962	defined wantarray && AnyEvent::Util::guard { %state = () }
856	}	963	}
857		964
…		…
892	string of the form C<http://host:port> (optionally C<https:...>), croaks	999	string of the form C<http://host:port> (optionally C<https:...>), croaks
893	otherwise.	1000	otherwise.
894		1001
895	To clear an already-set proxy, use C<undef>.	1002	To clear an already-set proxy, use C<undef>.
896		1003
		1004	=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
		1005
		1006	Remove all cookies from the cookie jar that have been expired. If
		1007	C<$session_end> is given and true, then additionally remove all session
		1008	cookies.
		1009
		1010	You should call this function (with a true C<$session_end>) before you
		1011	save cookies to disk, and you should call this function after loading them
		1012	again. If you have a long-running program you can additonally call this
		1013	function from time to time.
		1014
		1015	A cookie jar is initially an empty hash-reference that is managed by this
		1016	module. It's format is subject to change, but currently it is like this:
		1017
		1018	The key C<version> has to contain C<1>, otherwise the hash gets
		1019	emptied. All other keys are hostnames or IP addresses pointing to
		1020	hash-references. The key for these inner hash references is the
		1021	server path for which this cookie is meant, and the values are again
		1022	hash-references. The keys of those hash-references is the cookie name, and
		1023	the value, you guessed it, is another hash-reference, this time with the
		1024	key-value pairs from the cookie, except for C<expires> and C<max-age>,
		1025	which have been replaced by a C<_expires> key that contains the cookie
		1026	expiry timestamp.
		1027
		1028	Here is an example of a cookie jar with a single cookie, so you have a
		1029	chance of understanding the above paragraph:
		1030
		1031	{
		1032	version => 1,
		1033	"10.0.0.1" => {
		1034	"/" => {
		1035	"mythweb_id" => {
		1036	_expires => 1293917923,
		1037	value => "ooRung9dThee3ooyXooM1Ohm",
		1038	},
		1039	},
		1040	},
		1041	}
		1042
897	=item $date = AnyEvent::HTTP::format_date $timestamp	1043	=item $date = AnyEvent::HTTP::format_date $timestamp
898		1044
899	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP	1045	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
900	Date (RFC 2616).	1046	Date (RFC 2616).
901		1047
902	=item $timestamp = AnyEvent::HTTP::parse_date $date	1048	=item $timestamp = AnyEvent::HTTP::parse_date $date
903		1049
904	Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX	1050	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		1051	bunch of minor variations of those, and returns the corresponding POSIX
905	timestamp, or C<undef> if the date cannot be parsed.	1052	timestamp, or C<undef> if the date cannot be parsed.
906		1053
907	=item $AnyEvent::HTTP::MAX_RECURSE	1054	=item $AnyEvent::HTTP::MAX_RECURSE
908		1055
909	The default value for the C<recurse> request parameter (default: C<10>).	1056	The default value for the C<recurse> request parameter (default: C<10>).
…		…
949	sub parse_date($) {	1096	sub parse_date($) {
950	my ($date) = @_;	1097	my ($date) = @_;
951		1098
952	my ($d, $m, $y, $H, $M, $S);	1099	my ($d, $m, $y, $H, $M, $S);
953		1100
954	if ($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$/) {	1101	if ($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$/) {
955	# RFC 822/1123, required by RFC 2616	1102	# RFC 822/1123, required by RFC 2616 (with " ")
		1103	# cookie dates (with "-")
		1104
956	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);	1105	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
957		1106
958	} elsif ($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$/) {	1107	} elsif ($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$/) {
959	# RFC 850	1108	# RFC 850
960	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);	1109	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
961		1110
962	} elsif ($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])$/) {	1111	} elsif ($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])$/) {
963	# ISO C's asctime	1112	# ISO C's asctime
964	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);	1113	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
965	}	1114	}
966	# other formats fail in the loop below	1115	# other formats fail in the loop below
967		1116

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC vs. Revision 1.88 by root, Sun Jan 2 20:57:03 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC vs.
Revision 1.88 by root, Sun Jan 2 20:57:03 2011 UTC