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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.16 by root, Fri Jun 6 12:57:48 2008 UTC vs.
Revision 1.41 by root, Sun Jul 5 23:50:59 2009 UTC

…		…
3	AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client	3	AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client
4		4
5	=head1 SYNOPSIS	5	=head1 SYNOPSIS
6		6
7	use AnyEvent::HTTP;	7	use AnyEvent::HTTP;
		8
		9	http_get "http://www.nethype.de/", sub { print $_[1] };
		10
		11	# ... do something else here
8		12
9	=head1 DESCRIPTION	13	=head1 DESCRIPTION
10		14
11	This module is an L<AnyEvent> user, you need to make sure that you use and	15	This module is an L<AnyEvent> user, you need to make sure that you use and
12	run a supported event loop.	16	run a supported event loop.
…		…
35	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
36		40
37	use strict;	41	use strict;
38	no warnings;	42	no warnings;
39		43
40	use Carp;	44	use Errno ();
41		45
42	use AnyEvent ();	46	use AnyEvent 4.452 ();
43	use AnyEvent::Util ();	47	use AnyEvent::Util ();
44	use AnyEvent::Socket ();	48	use AnyEvent::Socket ();
45	use AnyEvent::Handle ();	49	use AnyEvent::Handle ();
46		50
47	use base Exporter::;	51	use base Exporter::;
48		52
49	our $VERSION = '1.01';	53	our $VERSION = '1.12';
50		54
51	our @EXPORT = qw(http_get http_request);	55	our @EXPORT = qw(http_get http_post http_head http_request);
52		56
53	our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	57	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
54	our $MAX_RECURSE = 10;	58	our $MAX_RECURSE = 10;
55	our $MAX_PERSISTENT = 8;	59	our $MAX_PERSISTENT = 8;
56	our $PERSISTENT_TIMEOUT = 2;	60	our $PERSISTENT_TIMEOUT = 2;
57	our $TIMEOUT = 300;	61	our $TIMEOUT = 300;
58		62
…		…
67	my %CO_SLOT; # number of open connections, and wait queue, per host	71	my %CO_SLOT; # number of open connections, and wait queue, per host
68		72
69	=item http_get $url, key => value..., $cb->($data, $headers)	73	=item http_get $url, key => value..., $cb->($data, $headers)
70		74
71	Executes an HTTP-GET request. See the http_request function for details on	75	Executes an HTTP-GET request. See the http_request function for details on
72	additional parameters.	76	additional parameters and the return value.
73		77
74	=item http_head $url, key => value..., $cb->($data, $headers)	78	=item http_head $url, key => value..., $cb->($data, $headers)
75		79
76	Executes an HTTP-HEAD request. See the http_request function for details on	80	Executes an HTTP-HEAD request. See the http_request function for details
77	additional parameters.	81	on additional parameters and the return value.
78		82
79	=item http_post $url, $body, key => value..., $cb->($data, $headers)	83	=item http_post $url, $body, key => value..., $cb->($data, $headers)
80		84
81	Executes an HTTP-POST request with a request body of C<$bod>. See the	85	Executes an HTTP-POST request with a request body of C<$body>. See the
82	http_request function for details on additional parameters.	86	http_request function for details on additional parameters and the return
		87	value.
83		88
84	=item http_request $method => $url, key => value..., $cb->($data, $headers)	89	=item http_request $method => $url, key => value..., $cb->($data, $headers)
85		90
86	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL	91	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
87	must be an absolute http or https URL.	92	must be an absolute http or https URL.
		93
		94	When called in void context, nothing is returned. In other contexts,
		95	C<http_request> returns a "cancellation guard" - you have to keep the
		96	object at least alive until the callback get called. If the object gets
		97	destroyed before the callbakc is called, the request will be cancelled.
88		98
89	The callback will be called with the response data as first argument	99	The callback will be called with the response data as first argument
90	(or C<undef> if it wasn't available due to errors), and a hash-ref with	100	(or C<undef> if it wasn't available due to errors), and a hash-ref with
91	response headers as second argument.	101	response headers as second argument.
92		102
93	All the headers in that hash are lowercased. In addition to the response	103	All the headers in that hash are lowercased. In addition to the response
94	headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and	104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
95	C<Reason> contain the three parts of the HTTP Status-Line of the same	105	contain the three parts of the HTTP Status-Line of the same name. The
		106	pseudo-header C<URL> contains the original URL (which can differ from the
		107	requested URL when following redirects).
		108
96	name. If the server sends a header multiple lines, then their contents	109	If the server sends a header multiple times, then their contents will be
97	will be joined together with C<\x00>.	110	joined together with a comma (C<,>), as per the HTTP spec.
98		111
99	If an internal error occurs, such as not being able to resolve a hostname,	112	If an internal error occurs, such as not being able to resolve a hostname,
100	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
101	and the C<Reason> pseudo-header will contain an error message.	114	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		115	message.
102		116
103	A typical callback might look like this:	117	A typical callback might look like this:
104		118
105	sub {	119	sub {
106	my ($body, $hdr) = @_;	120	my ($body, $hdr) = @_;
…		…
152	based on the original netscape specification.	166	based on the original netscape specification.
153		167
154	The C<$hash_ref> must be an (initially empty) hash reference which will	168	The C<$hash_ref> must be an (initially empty) hash reference which will
155	get updated automatically. It is possible to save the cookie_jar to	169	get updated automatically. It is possible to save the cookie_jar to
156	persistent storage with something like JSON or Storable, but this is not	170	persistent storage with something like JSON or Storable, but this is not
157	recommended, as expire times are currently being ignored.	171	recommended, as expiry times are currently being ignored.
158		172
159	Note that this cookie implementation is not of very high quality, nor	173	Note that this cookie implementation is not of very high quality, nor
160	meant to be complete. If you want complete cookie management you have to	174	meant to be complete. If you want complete cookie management you have to
161	do that on your own. C<cookie_jar> is meant as a quick fix to get some	175	do that on your own. C<cookie_jar> is meant as a quick fix to get some
162	cookie-using sites working. Cookies are a privacy disaster, do not use	176	cookie-using sites working. Cookies are a privacy disaster, do not use
163	them unless required to.	177	them unless required to.
		178
		179	=item tls_ctx => $scheme \| $tls_ctx
		180
		181	Specifies the AnyEvent::TLS context to be used for https connections. This
		182	parameter follows the same rules as the C<tls_ctx> parameter to
		183	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		184	C<high> can be specified, which give you a predefined low-security (no
		185	verification, highest compatibility) and high-security (CA and common-name
		186	verification) TLS context.
		187
		188	The default for this option is C<low>, which could be interpreted as "give
		189	me the page, no matter what".
		190
		191	=item on_header => $callback->($hdr)
		192
		193	When specified, this callback will be called with the header hash as soon
		194	as headers have been successfully received from the remote server (not on
		195	locally-generated errors).
		196
		197	It has to return either true (in which case AnyEvent::HTTP will continue),
		198	or false, in which case AnyEvent::HTTP will cancel the download (and call
		199	the finish callback with an error code of C<598>).
		200
		201	This callback is useful, among other things, to quickly reject unwanted
		202	content, which, if it is supposed to be rare, can be faster than first
		203	doing a C<HEAD> request.
		204
		205	=item on_body => $callback->($data, $hdr)
		206
		207	When specified, all body data will be "filtered" through this callback.
		208
		209	The callback will incrementally receive body data, and is supposed to
		210	return it or a modified version of it (empty strings are valid returns).
		211
		212	If the callback returns C<undef>, then the request will be cancelled.
		213
		214	This callback is useful when you want to do some processing on the data,
		215	or the data is too large to be held in memory (so the callback writes it
		216	to a file and returns the empty string) and so on.
		217
		218	It is usually preferred over doing your own body handling via
		219	C<want_body_handle>.
		220
		221	=item want_body_handle => $enable
		222
		223	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		224	changes considerably: after parsing the headers, and instead of
		225	downloading the body (if any), the completion callback will be
		226	called. Instead of the C<$body> argument containing the body data, the
		227	callback will receive the L<AnyEvent::Handle> object associated with the
		228	connection. In error cases, C<undef> will be passed. When there is no body
		229	(e.g. status C<304>), the empty string will be passed.
		230
		231	The handle object might or might not be in TLS mode, might be connected to
		232	a proxy, be a persistent connection etc., and configured in unspecified
		233	ways. The user is responsible for this handle (it will not be used by this
		234	module anymore).
		235
		236	This is useful with some push-type services, where, after the initial
		237	headers, an interactive protocol is used (typical example would be the
		238	push-style twitter API which starts a JSON/XML stream).
		239
		240	If you think you need this, first have a look at C<on_body>, to see if
		241	that doesn'T solve your problem in a better way.
164		242
165	=back	243	=back
166		244
167	Example: make a simple HTTP GET request for http://www.nethype.de/	245	Example: make a simple HTTP GET request for http://www.nethype.de/
168		246
…		…
181	my ($body, $hdr) = @_;	259	my ($body, $hdr) = @_;
182	use Data::Dumper;	260	use Data::Dumper;
183	print Dumper $hdr;	261	print Dumper $hdr;
184	}	262	}
185	;	263	;
		264
		265	Example: make another simple HTTP GET request, but immediately try to
		266	cancel it.
		267
		268	my $request = http_request GET => "http://www.nethype.de/", sub {
		269	my ($body, $hdr) = @_;
		270	print "$body\n";
		271	};
		272
		273	undef $request;
186		274
187	=cut	275	=cut
188		276
189	sub _slot_schedule;	277	sub _slot_schedule;
190	sub _slot_schedule($) {	278	sub _slot_schedule($) {
…		…
214	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	302	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
215		303
216	_slot_schedule $_[0];	304	_slot_schedule $_[0];
217	}	305	}
218		306
		307	our $qr_nl = qr<\015?\012>;
		308	our $qr_nlnl = qr<\015?\012\015?\012>;
		309
		310	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		311	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		312
219	sub http_request($$@) {	313	sub http_request($$@) {
220	my $cb = pop;	314	my $cb = pop;
221	my ($method, $url, %arg) = @_;	315	my ($method, $url, %arg) = @_;
222		316
223	my %hdr;	317	my %hdr;
		318
		319	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		320	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
224		321
225	$method = uc $method;	322	$method = uc $method;
226		323
227	if (my $hdr = $arg{headers}) {	324	if (my $hdr = $arg{headers}) {
228	while (my ($k, $v) = each %$hdr) {	325	while (my ($k, $v) = each %$hdr) {
229	$hdr{lc $k} = $v;	326	$hdr{lc $k} = $v;
230	}	327	}
231	}	328	}
232		329
233	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;	330	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
234		331
235	return $cb->(undef, { Status => 599, Reason => "recursion limit reached" })	332	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
236	if $recurse < 0;	333	if $recurse < 0;
237		334
238	my $proxy = $arg{proxy} \|\| $PROXY;	335	my $proxy = $arg{proxy} \|\| $PROXY;
239	my $timeout = $arg{timeout} \|\| $TIMEOUT;	336	my $timeout = $arg{timeout} \|\| $TIMEOUT;
240		337
241	$hdr{"user-agent"} \|\|= $USERAGENT;
242
243	my ($scheme, $authority, $upath, $query, $fragment) =	338	my ($uscheme, $uauthority, $upath, $query, $fragment) =
244	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	339	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
245		340
246	$scheme = lc $scheme;	341	$uscheme = lc $uscheme;
247		342
248	my $uport = $scheme eq "http" ? 80	343	my $uport = $uscheme eq "http" ? 80
249	: $scheme eq "https" ? 443	344	: $uscheme eq "https" ? 443
250	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" });	345	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
251		346
252	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
253
254	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	347	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
255	or return $cb->(undef, { Status => 599, Reason => "unparsable URL" });	348	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
256		349
257	my $uhost = $1;	350	my $uhost = $1;
258	$uport = $2 if defined $2;	351	$uport = $2 if defined $2;
259		352
260	$uhost =~ s/^\[(.*)\]$/$1/;	353	$uhost =~ s/^\[(.*)\]$/$1/;
…		…
262		355
263	$upath =~ s%^/?%/%;	356	$upath =~ s%^/?%/%;
264		357
265	# cookie processing	358	# cookie processing
266	if (my $jar = $arg{cookie_jar}) {	359	if (my $jar = $arg{cookie_jar}) {
267	%$jar = () if $jar->{version} < 1;	360	%$jar = () if $jar->{version} != 1;
268		361
269	my @cookie;	362	my @cookie;
270		363
271	while (my ($chost, $v) = each %$jar) {	364	while (my ($chost, $v) = each %$jar) {
		365	if ($chost =~ /^\./) {
272	next unless $chost eq substr $uhost, -length $chost;	366	next unless $chost eq substr $uhost, -length $chost;
273	next unless $chost =~ /^\./;	367	} elsif ($chost =~ /\./) {
		368	next unless $chost eq $uhost;
		369	} else {
		370	next;
		371	}
274		372
275	while (my ($cpath, $v) = each %$v) {	373	while (my ($cpath, $v) = each %$v) {
276	next unless $cpath eq substr $upath, 0, length $cpath;	374	next unless $cpath eq substr $upath, 0, length $cpath;
277		375
278	while (my ($k, $v) = each %$v) {	376	while (my ($k, $v) = each %$v) {
279	next if $scheme ne "https" && exists $v->{secure};	377	next if $uscheme ne "https" && exists $v->{secure};
		378	my $value = $v->{value};
		379	$value =~ s/([\\"])/\\$1/g;
280	push @cookie, "$k=$v->{value}";	380	push @cookie, "$k=\"$value\"";
281	}	381	}
282	}	382	}
283	}	383	}
284		384
285	$hdr{cookie} = join "; ", @cookie	385	$hdr{cookie} = join "; ", @cookie
286	if @cookie;	386	if @cookie;
287	}	387	}
288		388
289	my ($rhost, $rport, $rpath); # request host, port, path	389	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
290		390
291	if ($proxy) {	391	if ($proxy) {
292	($rhost, $rport, $scheme) = @$proxy;	392	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
293	$rpath = $url;	393
		394	# don't support https requests over https-proxy transport,
		395	# can't be done with tls as spec'ed, unless you double-encrypt.
		396	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
294	} else {	397	} else {
295	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	398	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
296	$hdr{host} = $uhost;
297	}	399	}
298		400
		401	$hdr{"user-agent"} \|\|= $USERAGENT;
		402	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
		403
		404	$hdr{host} = "$uhost:$uport";
299	$hdr{"content-length"} = length $arg{body};	405	$hdr{"content-length"} = length $arg{body};
300		406
301	my %state = (connect_guard => 1);	407	my %state = (connect_guard => 1);
302		408
303	_get_slot $uhost, sub {	409	_get_slot $uhost, sub {
…		…
305		411
306	return unless $state{connect_guard};	412	return unless $state{connect_guard};
307		413
308	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	414	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
309	$state{fh} = shift	415	$state{fh} = shift
310	or return $cb->(undef, { Status => 599, Reason => "$!" });	416	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));
		417	pop; # free memory, save a tree
311		418
312	delete $state{connect_guard}; # reduce memory usage, save a tree	419	return unless delete $state{connect_guard};
313		420
314	# get handle	421	# get handle
315	$state{handle} = new AnyEvent::Handle	422	$state{handle} = new AnyEvent::Handle
316	fh => $state{fh},	423	fh => $state{fh},
317	($scheme eq "https" ? (tls => "connect") : ());	424	timeout => $timeout,
		425	peername => $rhost,
		426	tls_ctx => $arg{tls_ctx};
318		427
319	# limit the number of persistent connections	428	# limit the number of persistent connections
		429	# keepalive not yet supported
320	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	430	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
321	++$KA_COUNT{$_[1]};	431	++$KA_COUNT{$_[1]};
322	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	432	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		433	--$KA_COUNT{$_[1]}
		434	};
323	$hdr{connection} = "keep-alive";	435	$hdr{connection} = "keep-alive";
324	delete $hdr{connection}; # keep-alive not yet supported
325	} else {	436	} else {
326	delete $hdr{connection};	437	delete $hdr{connection};
327	}	438	}
328		439
329	# (re-)configure handle	440	# (re-)configure handle
330	$state{handle}->timeout ($timeout);
331	$state{handle}->on_error (sub {	441	$state{handle}->on_error (sub {
332	my $errno = "$!";
333	%state = ();	442	%state = ();
334	$cb->(undef, { Status => 599, Reason => $errno });	443	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
335	});	444	});
336	$state{handle}->on_eof (sub {	445	$state{handle}->on_eof (sub {
337	%state = ();	446	%state = ();
338	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });	447	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
339	});	448	});
340		449
		450	$state{handle}->starttls ("connect") if $rscheme eq "https";
		451
		452	# handle actual, non-tunneled, request
		453	my $handle_actual_request = sub {
		454	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		455
341	# send request	456	# send request
342	$state{handle}->push_write (	457	$state{handle}->push_write (
343	"$method $rpath HTTP/1.0\015\012"	458	"$method $rpath HTTP/1.0\015\012"
344	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	459	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
345	. "\015\012"	460	. "\015\012"
346	. (delete $arg{body})	461	. (delete $arg{body})
347	);
348
349	%hdr = (); # reduce memory usage, save a kitten
350
351	# status line
352	$state{handle}->push_read (line => qr/\015?\012/, sub {
353	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
354	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
355
356	my %hdr = ( # response headers
357	HTTPVersion => "\x00$1",
358	Status => "\x00$2",
359	Reason => "\x00$3",
360	);	462	);
361		463
		464	%hdr = (); # reduce memory usage, save a kitten
		465
		466	# status line
		467	$state{handle}->push_read (line => $qr_nl, sub {
		468	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		469	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
		470
		471	my %hdr = ( # response headers
		472	HTTPVersion => ",$1",
		473	Status => ",$2",
		474	Reason => ",$3",
		475	URL => ",$url"
		476	);
		477
362	# headers, could be optimized a bit	478	# headers, could be optimized a bit
363	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	479	$state{handle}->unshift_read (line => $qr_nlnl, sub {
364	for ("$_[1]\012") {	480	for ("$_[1]\012") {
365	# we support spaces in field names, as lotus domino	481	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
366	# creates them.	482
		483	# things seen, not parsed:
		484	# p3pP="NON CUR OTPi OUR NOR UNI"
		485
367	$hdr{lc $1} .= "\x00$2"	486	$hdr{lc $1} .= ",$2"
368	while /\G	487	while /\G
369	([^:\000-\037]+):	488	([^:\000-\037]+):
370	[\011\040]*	489	[\011\040]*
371	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	490	((?: [^\012]+ \| \012[\011\040] )*)
372	\015?\012	491	\012
373	/gxc;	492	/gxc;
374		493
375	/\G$/	494	/\G$/
376	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" }));	495	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
377	}	496	}
378		497
379	substr $_, 0, 1, ""	498	substr $_, 0, 1, ""
380	for values %hdr;	499	for values %hdr;
381		500
382	my $finish = sub {	501	# redirect handling
383	%state = ();	502	# microsoft and other shitheads don't give a shit for following standards,
		503	# try to support some common forms of broken Location headers.
		504	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		505	$hdr{location} =~ s/^\.\/+//;
384		506
385	# set-cookie processing	507	my $url = "$rscheme://$uhost:$uport";
386	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
387	for (split /\x00/, $hdr{"set-cookie"}) {
388	my ($cookie, @arg) = split /;\s*/;
389	my ($name, $value) = split /=/, $cookie, 2;
390	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
391
392	my $cdom = (delete $kv{domain}) \|\| $uhost;
393	my $cpath = (delete $kv{path}) \|\| "/";
394
395	$cdom =~ s/^.?/./; # make sure it starts with a "."
396		508
397	next if $cdom =~ /\.$/;	509	unless ($hdr{location} =~ s/^\///) {
398		510	$url .= $upath;
399	# this is not rfc-like and not netscape-like. go figure.	511	$url =~ s/\/[^\/]*$//;
400	my $ndots = $cdom =~ y/.//;	512	}
401	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	513
402		514	$hdr{location} = "$url/$hdr{location}";
		515	}
		516
		517	my $redirect;
		518
		519	if ($recurse) {
		520	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
		521	# apparently, mozilla et al. just change POST to GET here
		522	# more research is needed before we do the same
403	# store it	523	$redirect = 1;
404	$arg{cookie_jar}{version} = 1;	524	} elsif ($hdr{Status} == 303) {
405	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	525	# even http/1.1 is unclear on how to mutate the method
		526	$method = "GET" unless $method eq "HEAD";
		527	$redirect = 1;
		528	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		529	$redirect = 1;
406	}	530	}
407	}	531	}
408		532
409	if ($_[1]{Status} =~ /^30[12]$/ && $recurse) {	533	my $finish = sub {
410	# microsoft and other assholes don't give a shit for following standards,	534	$state{handle}->destroy if $state{handle};
411	# try to support a common form of broken Location header.	535	%state = ();
412	$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;
413		536
		537	# set-cookie processing
		538	if ($arg{cookie_jar}) {
		539	for ($_[1]{"set-cookie"}) {
		540	# parse NAME=VALUE
		541	my @kv;
		542
		543	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		544	my $name = $1;
		545	my $value = $3;
		546
		547	unless ($value) {
		548	$value = $2;
		549	$value =~ s/\\(.)/$1/gs;
		550	}
		551
		552	push @kv, $name => $value;
		553
		554	last unless /\G\s*;/gc;
		555	}
		556
		557	last unless @kv;
		558
		559	my $name = shift @kv;
		560	my %kv = (value => shift @kv, @kv);
		561
		562	my $cdom;
		563	my $cpath = (delete $kv{path}) \|\| "/";
		564
		565	if (exists $kv{domain}) {
		566	$cdom = delete $kv{domain};
		567
		568	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		569
		570	next if $cdom =~ /\.$/;
		571
		572	# this is not rfc-like and not netscape-like. go figure.
		573	my $ndots = $cdom =~ y/.//;
		574	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		575	} else {
		576	$cdom = $uhost;
		577	}
		578
		579	# store it
		580	$arg{cookie_jar}{version} = 1;
		581	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		582
		583	redo if /\G\s*,/gc;
		584	}
		585	}
		586
		587	if ($redirect) {
		588	# we ignore any errors, as it is very common to receive
		589	# Content-Length != 0 but no actual body
		590	# we also access %hdr, as $_[1] might be an erro
414	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	591	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
		592	} else {
		593	$cb->($_[0], $_[1]);
		594	}
		595	};
		596
		597	my $len = $hdr{"content-length"};
		598
		599	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		600	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
		601	} elsif (
		602	$hdr{Status} =~ /^(?:1..\|204\|304)$/
		603	or $method eq "HEAD"
		604	or (defined $len && !$len)
		605	) {
		606	# no body
		607	$finish->("", \%hdr);
415	} else {	608	} else {
416	$cb->($_[0], $_[1]);	609	# body handling, four different code paths
		610	# for want_body_handle, on_body (2x), normal (2x)
		611	# we might read too much here, but it does not matter yet (no pers. connections)
		612	if (!$redirect && $arg{want_body_handle}) {
		613	$_[0]->on_eof (undef);
		614	$_[0]->on_error (undef);
		615	$_[0]->on_read (undef);
		616
		617	$finish->(delete $state{handle}, \%hdr);
		618
		619	} elsif ($arg{on_body}) {
		620	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		621	if ($len) {
		622	$_[0]->on_eof (undef);
		623	$_[0]->on_read (sub {
		624	$len -= length $_[0]{rbuf};
		625
		626	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		627	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		628
		629	$len > 0
		630	or $finish->("", \%hdr);
		631	});
		632	} else {
		633	$_[0]->on_eof (sub {
		634	$finish->("", \%hdr);
		635	});
		636	$_[0]->on_read (sub {
		637	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		638	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		639	});
		640	}
		641	} else {
		642	$_[0]->on_eof (undef);
		643
		644	if ($len) {
		645	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		646	$_[0]->on_read (sub {
		647	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
		648	if $len <= length $_[0]{rbuf};
		649	});
		650	} else {
		651	$_[0]->on_error (sub {
		652	$! == Errno::EPIPE
		653	? $finish->(delete $_[0]{rbuf}, \%hdr)
		654	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
		655	});
		656	$_[0]->on_read (sub { });
		657	}
		658	}
417	}	659	}
418	};	660	});
		661	});
		662	};
419		663
420	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	664	# now handle proxy-CONNECT method
421	$finish->(undef, \%hdr);	665	if ($proxy && $uscheme eq "https") {
		666	# oh dear, we have to wrap it into a connect request
		667
		668	# maybe re-use $uauthority with patched port?
		669	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		670	$state{handle}->push_read (line => $qr_nlnl, sub {
		671	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		672	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
		673
		674	if ($2 == 200) {
		675	$rpath = $upath;
		676	&$handle_actual_request;
422	} else {	677	} else {
423	if (exists $hdr{"content-length"}) {	678	%state = ();
424	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	679	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
425	# could cache persistent connection now
426	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
427	# but we don't, due to misdesigns, this is annoyingly complex
428	};
429
430	$finish->($_[1], \%hdr);
431	});
432	} else {
433	# too bad, need to read until we get an error or EOF,
434	# no way to detect winged data.
435	$_[0]->on_error (sub {
436	$finish->($_[0]{rbuf}, \%hdr);
437	});
438	$_[0]->on_eof (undef);
439	$_[0]->on_read (sub { });
440	}
441	}	680	}
442	});	681	});
		682	} else {
		683	&$handle_actual_request;
443	});	684	}
		685
444	}, sub {	686	}, sub {
445	$timeout	687	$timeout
446	};	688	};
447	};	689	};
448		690
…		…
458	unshift @_, "HEAD";	700	unshift @_, "HEAD";
459	&http_request	701	&http_request
460	}	702	}
461		703
462	sub http_post($$@) {	704	sub http_post($$@) {
		705	my $url = shift;
463	unshift @_, "POST", "body";	706	unshift @_, "POST", $url, "body";
464	&http_request	707	&http_request
465	}	708	}
466		709
467	=back	710	=back
468		711
…		…
480	The default value for the C<recurse> request parameter (default: C<10>).	723	The default value for the C<recurse> request parameter (default: C<10>).
481		724
482	=item $AnyEvent::HTTP::USERAGENT	725	=item $AnyEvent::HTTP::USERAGENT
483		726
484	The default value for the C<User-Agent> header (the default is	727	The default value for the C<User-Agent> header (the default is
485	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	728	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
486		729
487	=item $AnyEvent::HTTP::MAX_PERSISTENT	730	=item $AnyEvent::HTTP::MAX_PERSISTENT
488		731
489	The maximum number of persistent connections to keep open (default: 8).	732	The maximum number of persistent connections to keep open (default: 8).
490		733
…		…
517		760
518	L<AnyEvent>.	761	L<AnyEvent>.
519		762
520	=head1 AUTHOR	763	=head1 AUTHOR
521		764
522	Marc Lehmann <schmorp@schmorp.de>	765	Marc Lehmann <schmorp@schmorp.de>
523	http://home.schmorp.de/	766	http://home.schmorp.de/
		767
		768	With many thanks to Дмитрий Шалашов, who provided countless
		769	testcases and bugreports.
524		770
525	=cut	771	=cut
526		772
527	1	773	1
528		774

Diff Legend

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

Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.16 by root, Fri Jun 6 12:57:48 2008 UTC vs. Revision 1.41 by root, Sun Jul 5 23:50:59 2009 UTC

Diff Legend

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.16 by root, Fri Jun 6 12:57:48 2008 UTC vs.
Revision 1.41 by root, Sun Jul 5 23:50:59 2009 UTC