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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.18 by root, Fri Jun 6 16:23:57 2008 UTC vs.
Revision 1.42 by root, Mon Jul 6 00:08:16 2009 UTC

…		…
39	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
40		40
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Carp;	44	use Errno ();
45		45
46	use AnyEvent ();	46	use AnyEvent 4.452 ();
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Socket ();	48	use AnyEvent::Socket ();
49	use AnyEvent::Handle ();	49	use AnyEvent::Handle ();
50		50
51	use base Exporter::;	51	use base Exporter::;
52		52
53	our $VERSION = '1.01';	53	our $VERSION = '1.12';
54		54
55	our @EXPORT = qw(http_get http_post http_head http_request);	55	our @EXPORT = qw(http_get http_post http_head http_request);
56		56
57	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)";
58	our $MAX_RECURSE = 10;	58	our $MAX_RECURSE = 10;
59	our $MAX_PERSISTENT = 8;	59	our $MAX_PERSISTENT = 8;
60	our $PERSISTENT_TIMEOUT = 2;	60	our $PERSISTENT_TIMEOUT = 2;
61	our $TIMEOUT = 300;	61	our $TIMEOUT = 300;
62		62
…		…
71	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
72		72
73	=item http_get $url, key => value..., $cb->($data, $headers)	73	=item http_get $url, key => value..., $cb->($data, $headers)
74		74
75	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
76	additional parameters.	76	additional parameters and the return value.
77		77
78	=item http_head $url, key => value..., $cb->($data, $headers)	78	=item http_head $url, key => value..., $cb->($data, $headers)
79		79
80	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
81	additional parameters.	81	on additional parameters and the return value.
82		82
83	=item http_post $url, $body, key => value..., $cb->($data, $headers)	83	=item http_post $url, $body, key => value..., $cb->($data, $headers)
84		84
85	Executes an HTTP-POST request with a request body of C<$bod>. See the	85	Executes an HTTP-POST request with a request body of C<$body>. See the
86	http_request function for details on additional parameters.	86	http_request function for details on additional parameters and the return
		87	value.
87		88
88	=item http_request $method => $url, key => value..., $cb->($data, $headers)	89	=item http_request $method => $url, key => value..., $cb->($data, $headers)
89		90
90	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL	91	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
91	must be an absolute http or https URL.	92	must be an absolute http or https URL.
92		93
		94	When called in void context, nothing is returned. In other contexts,
		95	C<http_request> returns a "cancellation guard" - you have to keep the
		96	object at least alive until the callback get called. If the object gets
		97	destroyed before the callbakc is called, the request will be cancelled.
		98
93	The callback will be called with the response data as first argument	99	The callback will be called with the response body data as first argument
94	(or C<undef> if it wasn't available due to errors), and a hash-ref with	100	(or C<undef> if an error occured), and a hash-ref with response headers as
95	response headers as second argument.	101	second argument.
96		102
97	All the headers in that hash are lowercased. In addition to the response	103	All the headers in that hash are lowercased. In addition to the response
98	headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and	104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
99	C<Reason> contain the three parts of the HTTP Status-Line of the same	105	contain the three parts of the HTTP Status-Line of the same name. The
		106	pseudo-header C<URL> contains the original URL (which can differ from the
		107	requested URL when following redirects).
		108
100	name. If the server sends a header multiple lines, then their contents	109	If the server sends a header multiple times, then their contents will be
101	will be joined together with C<\x00>.	110	joined together with a comma (C<,>), as per the HTTP spec.
102		111
103	If an internal error occurs, such as not being able to resolve a hostname,	112	If an internal error occurs, such as not being able to resolve a hostname,
104	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
105	and the C<Reason> pseudo-header will contain an error message.	114	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		115	message.
106		116
107	A typical callback might look like this:	117	A typical callback might look like this:
108		118
109	sub {	119	sub {
110	my ($body, $hdr) = @_;	120	my ($body, $hdr) = @_;
…		…
156	based on the original netscape specification.	166	based on the original netscape specification.
157		167
158	The C<$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
159	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
160	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
161	recommended, as expire times are currently being ignored.	171	recommended, as expiry times are currently being ignored.
162		172
163	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
164	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
165	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
166	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
167	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 => $callback->($headers)
		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	Example: cancel the request unless the content-type is "text/html".
		206
		207	on_header => sub {
		208	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		209	},
		210
		211	=item on_body => $callback->($partial_body, $headers)
		212
		213	When specified, all body data will be passed to this callback instead of
		214	to the completion callback. The completion callback will get the empty
		215	string instead of the body data.
		216
		217	It has to return either true (in which case AnyEvent::HTTP will continue),
		218	or false, in which case AnyEvent::HTTP will cancel the download (and call
		219	the completion callback with an error code of C<598>).
		220
		221	This callback is useful when the data is too large to be held in memory
		222	(so the callback writes it to a file) or when only some information should
		223	be extracted, or when the body should be processed incrementally.
		224
		225	It is usually preferred over doing your own body handling via
		226	C<want_body_handle>.
		227
		228	=item want_body_handle => $enable
		229
		230	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		231	changes considerably: after parsing the headers, and instead of
		232	downloading the body (if any), the completion callback will be
		233	called. Instead of the C<$body> argument containing the body data, the
		234	callback will receive the L<AnyEvent::Handle> object associated with the
		235	connection. In error cases, C<undef> will be passed. When there is no body
		236	(e.g. status C<304>), the empty string will be passed.
		237
		238	The handle object might or might not be in TLS mode, might be connected to
		239	a proxy, be a persistent connection etc., and configured in unspecified
		240	ways. The user is responsible for this handle (it will not be used by this
		241	module anymore).
		242
		243	This is useful with some push-type services, where, after the initial
		244	headers, an interactive protocol is used (typical example would be the
		245	push-style twitter API which starts a JSON/XML stream).
		246
		247	If you think you need this, first have a look at C<on_body>, to see if
		248	that doesn'T solve your problem in a better way.
168		249
169	=back	250	=back
170		251
171	Example: make a simple HTTP GET request for http://www.nethype.de/	252	Example: make a simple HTTP GET request for http://www.nethype.de/
172		253
…		…
185	my ($body, $hdr) = @_;	266	my ($body, $hdr) = @_;
186	use Data::Dumper;	267	use Data::Dumper;
187	print Dumper $hdr;	268	print Dumper $hdr;
188	}	269	}
189	;	270	;
		271
		272	Example: make another simple HTTP GET request, but immediately try to
		273	cancel it.
		274
		275	my $request = http_request GET => "http://www.nethype.de/", sub {
		276	my ($body, $hdr) = @_;
		277	print "$body\n";
		278	};
		279
		280	undef $request;
190		281
191	=cut	282	=cut
192		283
193	sub _slot_schedule;	284	sub _slot_schedule;
194	sub _slot_schedule($) {	285	sub _slot_schedule($) {
…		…
218	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	309	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
219		310
220	_slot_schedule $_[0];	311	_slot_schedule $_[0];
221	}	312	}
222		313
		314	our $qr_nl = qr<\015?\012>;
		315	our $qr_nlnl = qr<\015?\012\015?\012>;
		316
		317	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		318	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		319
223	sub http_request($$@) {	320	sub http_request($$@) {
224	my $cb = pop;	321	my $cb = pop;
225	my ($method, $url, %arg) = @_;	322	my ($method, $url, %arg) = @_;
226		323
227	my %hdr;	324	my %hdr;
		325
		326	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		327	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
228		328
229	$method = uc $method;	329	$method = uc $method;
230		330
231	if (my $hdr = $arg{headers}) {	331	if (my $hdr = $arg{headers}) {
232	while (my ($k, $v) = each %$hdr) {	332	while (my ($k, $v) = each %$hdr) {
233	$hdr{lc $k} = $v;	333	$hdr{lc $k} = $v;
234	}	334	}
235	}	335	}
236		336
237	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;	337	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
238		338
239	return $cb->(undef, { Status => 599, Reason => "recursion limit reached" })	339	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
240	if $recurse < 0;	340	if $recurse < 0;
241		341
242	my $proxy = $arg{proxy} \|\| $PROXY;	342	my $proxy = $arg{proxy} \|\| $PROXY;
243	my $timeout = $arg{timeout} \|\| $TIMEOUT;	343	my $timeout = $arg{timeout} \|\| $TIMEOUT;
244		344
245	$hdr{"user-agent"} \|\|= $USERAGENT;
246
247	my ($scheme, $authority, $upath, $query, $fragment) =	345	my ($uscheme, $uauthority, $upath, $query, $fragment) =
248	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	346	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
249		347
250	$scheme = lc $scheme;	348	$uscheme = lc $uscheme;
251		349
252	my $uport = $scheme eq "http" ? 80	350	my $uport = $uscheme eq "http" ? 80
253	: $scheme eq "https" ? 443	351	: $uscheme eq "https" ? 443
254	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" });	352	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
255		353
256	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
257
258	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	354	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
259	or return $cb->(undef, { Status => 599, Reason => "unparsable URL" });	355	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
260		356
261	my $uhost = $1;	357	my $uhost = $1;
262	$uport = $2 if defined $2;	358	$uport = $2 if defined $2;
263		359
264	$uhost =~ s/^\[(.*)\]$/$1/;	360	$uhost =~ s/^\[(.*)\]$/$1/;
…		…
266		362
267	$upath =~ s%^/?%/%;	363	$upath =~ s%^/?%/%;
268		364
269	# cookie processing	365	# cookie processing
270	if (my $jar = $arg{cookie_jar}) {	366	if (my $jar = $arg{cookie_jar}) {
271	%$jar = () if $jar->{version} < 1;	367	%$jar = () if $jar->{version} != 1;
272		368
273	my @cookie;	369	my @cookie;
274		370
275	while (my ($chost, $v) = each %$jar) {	371	while (my ($chost, $v) = each %$jar) {
		372	if ($chost =~ /^\./) {
276	next unless $chost eq substr $uhost, -length $chost;	373	next unless $chost eq substr $uhost, -length $chost;
277	next unless $chost =~ /^\./;	374	} elsif ($chost =~ /\./) {
		375	next unless $chost eq $uhost;
		376	} else {
		377	next;
		378	}
278		379
279	while (my ($cpath, $v) = each %$v) {	380	while (my ($cpath, $v) = each %$v) {
280	next unless $cpath eq substr $upath, 0, length $cpath;	381	next unless $cpath eq substr $upath, 0, length $cpath;
281		382
282	while (my ($k, $v) = each %$v) {	383	while (my ($k, $v) = each %$v) {
283	next if $scheme ne "https" && exists $v->{secure};	384	next if $uscheme ne "https" && exists $v->{secure};
		385	my $value = $v->{value};
		386	$value =~ s/([\\"])/\\$1/g;
284	push @cookie, "$k=$v->{value}";	387	push @cookie, "$k=\"$value\"";
285	}	388	}
286	}	389	}
287	}	390	}
288		391
289	$hdr{cookie} = join "; ", @cookie	392	$hdr{cookie} = join "; ", @cookie
290	if @cookie;	393	if @cookie;
291	}	394	}
292		395
293	my ($rhost, $rport, $rpath); # request host, port, path	396	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
294		397
295	if ($proxy) {	398	if ($proxy) {
296	($rhost, $rport, $scheme) = @$proxy;	399	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
297	$rpath = $url;	400
		401	# don't support https requests over https-proxy transport,
		402	# can't be done with tls as spec'ed, unless you double-encrypt.
		403	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
298	} else {	404	} else {
299	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	405	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
300	$hdr{host} = $uhost;
301	}	406	}
302		407
		408	$hdr{"user-agent"} \|\|= $USERAGENT;
		409	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
		410
		411	$hdr{host} = "$uhost:$uport";
303	$hdr{"content-length"} = length $arg{body};	412	$hdr{"content-length"} = length $arg{body};
304		413
305	my %state = (connect_guard => 1);	414	my %state = (connect_guard => 1);
306		415
307	_get_slot $uhost, sub {	416	_get_slot $uhost, sub {
…		…
309		418
310	return unless $state{connect_guard};	419	return unless $state{connect_guard};
311		420
312	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	421	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
313	$state{fh} = shift	422	$state{fh} = shift
314	or return $cb->(undef, { Status => 599, Reason => "$!" });	423	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));
		424	pop; # free memory, save a tree
315		425
316	delete $state{connect_guard}; # reduce memory usage, save a tree	426	return unless delete $state{connect_guard};
317		427
318	# get handle	428	# get handle
319	$state{handle} = new AnyEvent::Handle	429	$state{handle} = new AnyEvent::Handle
320	fh => $state{fh},	430	fh => $state{fh},
321	($scheme eq "https" ? (tls => "connect") : ());	431	timeout => $timeout,
		432	peername => $rhost,
		433	tls_ctx => $arg{tls_ctx};
322		434
323	# limit the number of persistent connections	435	# limit the number of persistent connections
		436	# keepalive not yet supported
324	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	437	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
325	++$KA_COUNT{$_[1]};	438	++$KA_COUNT{$_[1]};
326	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	439	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		440	--$KA_COUNT{$_[1]}
		441	};
327	$hdr{connection} = "keep-alive";	442	$hdr{connection} = "keep-alive";
328	delete $hdr{connection}; # keep-alive not yet supported
329	} else {	443	} else {
330	delete $hdr{connection};	444	delete $hdr{connection};
331	}	445	}
332		446
333	# (re-)configure handle	447	# (re-)configure handle
334	$state{handle}->timeout ($timeout);
335	$state{handle}->on_error (sub {	448	$state{handle}->on_error (sub {
336	my $errno = "$!";
337	%state = ();	449	%state = ();
338	$cb->(undef, { Status => 599, Reason => $errno });	450	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
339	});	451	});
340	$state{handle}->on_eof (sub {	452	$state{handle}->on_eof (sub {
341	%state = ();	453	%state = ();
342	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });	454	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
343	});	455	});
344		456
		457	$state{handle}->starttls ("connect") if $rscheme eq "https";
		458
		459	# handle actual, non-tunneled, request
		460	my $handle_actual_request = sub {
		461	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		462
345	# send request	463	# send request
346	$state{handle}->push_write (	464	$state{handle}->push_write (
347	"$method $rpath HTTP/1.0\015\012"	465	"$method $rpath HTTP/1.0\015\012"
348	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	466	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
349	. "\015\012"	467	. "\015\012"
350	. (delete $arg{body})	468	. (delete $arg{body})
351	);
352
353	%hdr = (); # reduce memory usage, save a kitten
354
355	# status line
356	$state{handle}->push_read (line => qr/\015?\012/, sub {
357	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
358	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
359
360	my %hdr = ( # response headers
361	HTTPVersion => "\x00$1",
362	Status => "\x00$2",
363	Reason => "\x00$3",
364	);	469	);
365		470
		471	%hdr = (); # reduce memory usage, save a kitten
		472
		473	# status line
		474	$state{handle}->push_read (line => $qr_nl, sub {
		475	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		476	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
		477
		478	my %hdr = ( # response headers
		479	HTTPVersion => ",$1",
		480	Status => ",$2",
		481	Reason => ",$3",
		482	URL => ",$url"
		483	);
		484
366	# headers, could be optimized a bit	485	# headers, could be optimized a bit
367	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	486	$state{handle}->unshift_read (line => $qr_nlnl, sub {
368	for ("$_[1]\012") {	487	for ("$_[1]\012") {
369	# we support spaces in field names, as lotus domino	488	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
370	# creates them.	489
		490	# things seen, not parsed:
		491	# p3pP="NON CUR OTPi OUR NOR UNI"
		492
371	$hdr{lc $1} .= "\x00$2"	493	$hdr{lc $1} .= ",$2"
372	while /\G	494	while /\G
373	([^:\000-\037]+):	495	([^:\000-\037]+):
374	[\011\040]*	496	[\011\040]*
375	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	497	((?: [^\012]+ \| \012[\011\040] )*)
376	\015?\012	498	\012
377	/gxc;	499	/gxc;
378		500
379	/\G$/	501	/\G$/
380	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" }));	502	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
381	}	503	}
382		504
383	substr $_, 0, 1, ""	505	substr $_, 0, 1, ""
384	for values %hdr;	506	for values %hdr;
385		507
386	my $finish = sub {	508	# redirect handling
387	%state = ();	509	# microsoft and other shitheads don't give a shit for following standards,
		510	# try to support some common forms of broken Location headers.
		511	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		512	$hdr{location} =~ s/^\.\/+//;
388		513
389	# set-cookie processing	514	my $url = "$rscheme://$uhost:$uport";
390	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
391	for (split /\x00/, $hdr{"set-cookie"}) {
392	my ($cookie, @arg) = split /;\s*/;
393	my ($name, $value) = split /=/, $cookie, 2;
394	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
395
396	my $cdom = (delete $kv{domain}) \|\| $uhost;
397	my $cpath = (delete $kv{path}) \|\| "/";
398
399	$cdom =~ s/^.?/./; # make sure it starts with a "."
400		515
401	next if $cdom =~ /\.$/;	516	unless ($hdr{location} =~ s/^\///) {
402		517	$url .= $upath;
403	# this is not rfc-like and not netscape-like. go figure.	518	$url =~ s/\/[^\/]*$//;
404	my $ndots = $cdom =~ y/.//;	519	}
405	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	520
406		521	$hdr{location} = "$url/$hdr{location}";
		522	}
		523
		524	my $redirect;
		525
		526	if ($recurse) {
		527	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
		528	# apparently, mozilla et al. just change POST to GET here
		529	# more research is needed before we do the same
407	# store it	530	$redirect = 1;
408	$arg{cookie_jar}{version} = 1;	531	} elsif ($hdr{Status} == 303) {
409	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	532	# even http/1.1 is unclear on how to mutate the method
		533	$method = "GET" unless $method eq "HEAD";
		534	$redirect = 1;
		535	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		536	$redirect = 1;
410	}	537	}
411	}	538	}
412		539
413	if ($_[1]{Status} =~ /^30[12]$/ && $recurse) {	540	my $finish = sub {
414	# microsoft and other assholes don't give a shit for following standards,	541	$state{handle}->destroy if $state{handle};
415	# try to support a common form of broken Location header.	542	%state = ();
416	$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;
417		543
		544	# set-cookie processing
		545	if ($arg{cookie_jar}) {
		546	for ($_[1]{"set-cookie"}) {
		547	# parse NAME=VALUE
		548	my @kv;
		549
		550	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		551	my $name = $1;
		552	my $value = $3;
		553
		554	unless ($value) {
		555	$value = $2;
		556	$value =~ s/\\(.)/$1/gs;
		557	}
		558
		559	push @kv, $name => $value;
		560
		561	last unless /\G\s*;/gc;
		562	}
		563
		564	last unless @kv;
		565
		566	my $name = shift @kv;
		567	my %kv = (value => shift @kv, @kv);
		568
		569	my $cdom;
		570	my $cpath = (delete $kv{path}) \|\| "/";
		571
		572	if (exists $kv{domain}) {
		573	$cdom = delete $kv{domain};
		574
		575	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		576
		577	next if $cdom =~ /\.$/;
		578
		579	# this is not rfc-like and not netscape-like. go figure.
		580	my $ndots = $cdom =~ y/.//;
		581	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		582	} else {
		583	$cdom = $uhost;
		584	}
		585
		586	# store it
		587	$arg{cookie_jar}{version} = 1;
		588	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		589
		590	redo if /\G\s*,/gc;
		591	}
		592	}
		593
		594	if ($redirect) {
		595	# we ignore any errors, as it is very common to receive
		596	# Content-Length != 0 but no actual body
		597	# we also access %hdr, as $_[1] might be an erro
418	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	598	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
		599	} else {
		600	$cb->($_[0], $_[1]);
		601	}
		602	};
		603
		604	my $len = $hdr{"content-length"};
		605
		606	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		607	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
		608	} elsif (
		609	$hdr{Status} =~ /^(?:1..\|[23]04)$/
		610	or $method eq "HEAD"
		611	or (defined $len && !$len)
		612	) {
		613	# no body
		614	$finish->("", \%hdr);
419	} else {	615	} else {
420	$cb->($_[0], $_[1]);	616	# body handling, four different code paths
		617	# for want_body_handle, on_body (2x), normal (2x)
		618	# we might read too much here, but it does not matter yet (no pers. connections)
		619	if (!$redirect && $arg{want_body_handle}) {
		620	$_[0]->on_eof (undef);
		621	$_[0]->on_error (undef);
		622	$_[0]->on_read (undef);
		623
		624	$finish->(delete $state{handle}, \%hdr);
		625
		626	} elsif ($arg{on_body}) {
		627	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		628	if ($len) {
		629	$_[0]->on_eof (undef);
		630	$_[0]->on_read (sub {
		631	$len -= length $_[0]{rbuf};
		632
		633	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		634	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		635
		636	$len > 0
		637	or $finish->("", \%hdr);
		638	});
		639	} else {
		640	$_[0]->on_eof (sub {
		641	$finish->("", \%hdr);
		642	});
		643	$_[0]->on_read (sub {
		644	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		645	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		646	});
		647	}
		648	} else {
		649	$_[0]->on_eof (undef);
		650
		651	if ($len) {
		652	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		653	$_[0]->on_read (sub {
		654	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
		655	if $len <= length $_[0]{rbuf};
		656	});
		657	} else {
		658	$_[0]->on_error (sub {
		659	$! == Errno::EPIPE
		660	? $finish->(delete $_[0]{rbuf}, \%hdr)
		661	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
		662	});
		663	$_[0]->on_read (sub { });
		664	}
		665	}
421	}	666	}
422	};	667	});
		668	});
		669	};
423		670
424	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	671	# now handle proxy-CONNECT method
425	$finish->(undef, \%hdr);	672	if ($proxy && $uscheme eq "https") {
		673	# oh dear, we have to wrap it into a connect request
		674
		675	# maybe re-use $uauthority with patched port?
		676	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		677	$state{handle}->push_read (line => $qr_nlnl, sub {
		678	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		679	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
		680
		681	if ($2 == 200) {
		682	$rpath = $upath;
		683	&$handle_actual_request;
426	} else {	684	} else {
427	if (exists $hdr{"content-length"}) {	685	%state = ();
428	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	686	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
429	# could cache persistent connection now
430	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
431	# but we don't, due to misdesigns, this is annoyingly complex
432	};
433
434	$finish->($_[1], \%hdr);
435	});
436	} else {
437	# too bad, need to read until we get an error or EOF,
438	# no way to detect winged data.
439	$_[0]->on_error (sub {
440	$finish->($_[0]{rbuf}, \%hdr);
441	});
442	$_[0]->on_eof (undef);
443	$_[0]->on_read (sub { });
444	}
445	}	687	}
446	});	688	});
		689	} else {
		690	&$handle_actual_request;
447	});	691	}
		692
448	}, sub {	693	}, sub {
449	$timeout	694	$timeout
450	};	695	};
451	};	696	};
452		697
…		…
462	unshift @_, "HEAD";	707	unshift @_, "HEAD";
463	&http_request	708	&http_request
464	}	709	}
465		710
466	sub http_post($$@) {	711	sub http_post($$@) {
		712	my $url = shift;
467	unshift @_, "POST", "body";	713	unshift @_, "POST", $url, "body";
468	&http_request	714	&http_request
469	}	715	}
470		716
471	=back	717	=back
472		718
…		…
484	The default value for the C<recurse> request parameter (default: C<10>).	730	The default value for the C<recurse> request parameter (default: C<10>).
485		731
486	=item $AnyEvent::HTTP::USERAGENT	732	=item $AnyEvent::HTTP::USERAGENT
487		733
488	The default value for the C<User-Agent> header (the default is	734	The default value for the C<User-Agent> header (the default is
489	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	735	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
490		736
491	=item $AnyEvent::HTTP::MAX_PERSISTENT	737	=item $AnyEvent::HTTP::MAX_PERSISTENT
492		738
493	The maximum number of persistent connections to keep open (default: 8).	739	The maximum number of persistent connections to keep open (default: 8).
494		740
…		…
524	=head1 AUTHOR	770	=head1 AUTHOR
525		771
526	Marc Lehmann <schmorp@schmorp.de>	772	Marc Lehmann <schmorp@schmorp.de>
527	http://home.schmorp.de/	773	http://home.schmorp.de/
528		774
		775	With many thanks to Дмитрий Шалашов, who provided countless
		776	testcases and bugreports.
		777
529	=cut	778	=cut
530		779
531	1	780	1
532		781

Diff Legend

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

Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.18 by root, Fri Jun 6 16:23:57 2008 UTC vs. Revision 1.42 by root, Mon Jul 6 00:08:16 2009 UTC

Diff Legend

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.18 by root, Fri Jun 6 16:23:57 2008 UTC vs.
Revision 1.42 by root, Mon Jul 6 00:08:16 2009 UTC