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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.63 by root, Thu Dec 30 04:31:55 2010 UTC vs.
Revision 1.72 by root, Fri Dec 31 20:59:19 2010 UTC

…		…
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
49		49
50	use base Exporter::;	50	use base Exporter::;
51		51
52	our $VERSION = '1.46';	52	our $VERSION = '1.5';
53		53
54	our @EXPORT = qw(http_get http_post http_head http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
55		55
56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
57	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
…		…
94	C<http_request> returns a "cancellation guard" - you have to keep the	94	C<http_request> returns a "cancellation guard" - you have to keep the
95	object at least alive until the callback get called. If the object gets	95	object at least alive until the callback get called. If the object gets
96	destroyed before the callback is called, the request will be cancelled.	96	destroyed before the callback is called, the request will be cancelled.
97		97
98	The callback will be called with the response body data as first argument	98	The callback will be called with the response body data as first argument
99	(or C<undef> if an error occured), and a hash-ref with response headers as	99	(or C<undef> if an error occured), and a hash-ref with response headers
100	second argument.	100	(and trailers) as second argument.
101		101
102	All the headers in that hash are lowercased. In addition to the response	102	All the headers in that hash are lowercased. In addition to the response
103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the	104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	three parts of the HTTP Status-Line of the same name.	105	three parts of the HTTP Status-Line of the same name. If an error occurs
		106	during the body phase of a request, then the original C<Status> and
		107	C<Reason> values from the header are available as C<OrigStatus> and
		108	C<OrigReason>.
106		109
107	The pseudo-header C<URL> contains the actual URL (which can differ from	110	The pseudo-header C<URL> contains the actual URL (which can differ from
108	the requested URL when following redirects - for example, you might get	111	the requested URL when following redirects - for example, you might get
109	an error that your URL scheme is not supported even though your URL is a	112	an error that your URL scheme is not supported even though your URL is a
110	valid http URL because it redirected to an ftp URL, in which case you can	113	valid http URL because it redirected to an ftp URL, in which case you can
…		…
147	Whether to recurse requests or not, e.g. on redirects, authentication	150	Whether to recurse requests or not, e.g. on redirects, authentication
148	retries and so on, and how often to do so.	151	retries and so on, and how often to do so.
149		152
150	=item headers => hashref	153	=item headers => hashref
151		154
152	The request headers to use. Currently, C<http_request> may provide its	155	The request headers to use. Currently, C<http_request> may provide its own
153	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	156	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
154	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be	157	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
155	suppressed by using C<undef> for these headers in which case they won't be	158	(this can be suppressed by using C<undef> for these headers in which case
156	sent at all).	159	they won't be sent at all).
157		160
158	=item timeout => $seconds	161	=item timeout => $seconds
159		162
160	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
161	the timeout, as will read or write activity, i.e. this is not an overall	164	the timeout, as will read or write activity, i.e. this is not an overall
…		…
171	C<$scheme> must be either missing, C<http> for HTTP or C<https> for	174	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
172	HTTPS.	175	HTTPS.
173		176
174	=item body => $string	177	=item body => $string
175		178
176	The request body, usually empty. Will be-sent as-is (future versions of	179	The request body, usually empty. Will be sent as-is (future versions of
177	this module might offer more options).	180	this module might offer more options).
178		181
179	=item cookie_jar => $hash_ref	182	=item cookie_jar => $hash_ref
180		183
181	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
182	based on the original netscape specification.	185	based on the original netscape specification.
183		186
184	The C<$hash_ref> must be an (initially empty) hash reference which will	187	The C<$hash_ref> must be an (initially empty) hash reference which will
185	get updated automatically. It is possible to save the cookie_jar to	188	get updated automatically. It is possible to save the cookie jar to
186	persistent storage with something like JSON or Storable, but this is not	189	persistent storage with something like JSON or Storable, but this is not
187	recommended, as expiry times are currently being ignored.	190	recommended, as session-only cookies might survive longer than expected.
188		191
189	Note that this cookie implementation is not of very high quality, nor	192	Note that this cookie implementation is not meant to be complete. If
190	meant to be complete. If you want complete cookie management you have to	193	you want complete cookie management you have to do that on your
191	do that on your own. C<cookie_jar> is meant as a quick fix to get some	194	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
192	cookie-using sites working. Cookies are a privacy disaster, do not use	195	working. Cookies are a privacy disaster, do not use them unless required
193	them unless required to.	196	to.
		197
		198	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		199	headers will be set and handled by this module, otherwise they will be
		200	left untouched.
194		201
195	=item tls_ctx => $scheme \| $tls_ctx	202	=item tls_ctx => $scheme \| $tls_ctx
196		203
197	Specifies the AnyEvent::TLS context to be used for https connections. This	204	Specifies the AnyEvent::TLS context to be used for https connections. This
198	parameter follows the same rules as the C<tls_ctx> parameter to	205	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
237		244
238	This callback is useful, among other things, to quickly reject unwanted	245	This callback is useful, among other things, to quickly reject unwanted
239	content, which, if it is supposed to be rare, can be faster than first	246	content, which, if it is supposed to be rare, can be faster than first
240	doing a C<HEAD> request.	247	doing a C<HEAD> request.
241		248
		249	The downside is that cancelling the request makes it impossible to re-use
		250	the connection. Also, the C<on_header> callback will not receive any
		251	trailer (headers sent after the response body).
		252
242	Example: cancel the request unless the content-type is "text/html".	253	Example: cancel the request unless the content-type is "text/html".
243		254
244	on_header => sub {	255	on_header => sub {
245	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	256	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
246	},	257	},
…		…
252	string instead of the body data.	263	string instead of the body data.
253		264
254	It has to return either true (in which case AnyEvent::HTTP will continue),	265	It has to return either true (in which case AnyEvent::HTTP will continue),
255	or false, in which case AnyEvent::HTTP will cancel the download (and call	266	or false, in which case AnyEvent::HTTP will cancel the download (and call
256	the completion callback with an error code of C<598>).	267	the completion callback with an error code of C<598>).
		268
		269	The downside to cancelling the request is that it makes it impossible to
		270	re-use the connection.
257		271
258	This callback is useful when the data is too large to be held in memory	272	This callback is useful when the data is too large to be held in memory
259	(so the callback writes it to a file) or when only some information should	273	(so the callback writes it to a file) or when only some information should
260	be extracted, or when the body should be processed incrementally.	274	be extracted, or when the body should be processed incrementally.
261		275
…		…
287	If you think you need this, first have a look at C<on_body>, to see if	301	If you think you need this, first have a look at C<on_body>, to see if
288	that doesn't solve your problem in a better way.	302	that doesn't solve your problem in a better way.
289		303
290	=back	304	=back
291		305
292	Example: make a simple HTTP GET request for http://www.nethype.de/	306	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		307	the response body.
293		308
294	http_request GET => "http://www.nethype.de/", sub {	309	http_request GET => "http://www.nethype.de/", sub {
295	my ($body, $hdr) = @_;	310	my ($body, $hdr) = @_;
296	print "$body\n";	311	print "$body\n";
297	};	312	};
298		313
299	Example: make a HTTP HEAD request on https://www.google.com/, use a	314	Example: do a HTTP HEAD request on https://www.google.com/, use a
300	timeout of 30 seconds.	315	timeout of 30 seconds.
301		316
302	http_request	317	http_request
303	GET => "https://www.google.com",	318	GET => "https://www.google.com",
304	timeout => 30,	319	timeout => 30,
…		…
307	use Data::Dumper;	322	use Data::Dumper;
308	print Dumper $hdr;	323	print Dumper $hdr;
309	}	324	}
310	;	325	;
311		326
312	Example: make another simple HTTP GET request, but immediately try to	327	Example: do another simple HTTP GET request, but immediately try to
313	cancel it.	328	cancel it.
314		329
315	my $request = http_request GET => "http://www.nethype.de/", sub {	330	my $request = http_request GET => "http://www.nethype.de/", sub {
316	my ($body, $hdr) = @_;	331	my ($body, $hdr) = @_;
317	print "$body\n";	332	print "$body\n";
…		…
349	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	364	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
350		365
351	_slot_schedule $_[0];	366	_slot_schedule $_[0];
352	}	367	}
353		368
		369	# extract cookies from jar
		370	sub cookie_jar_extract($$$$) {
		371	my ($jar, $uscheme, $uhost, $upath) = @_;
		372
		373	%$jar = () if $jar->{version} != 1;
		374
		375	my @cookies;
		376
		377	while (my ($chost, $paths) = each %$jar) {
		378	next unless ref $paths;
		379
		380	if ($chost =~ /^\./) {
		381	next unless $chost eq substr $uhost, -length $chost;
		382	} elsif ($chost =~ /\./) {
		383	next unless $chost eq $uhost;
		384	} else {
		385	next;
		386	}
		387
		388	while (my ($cpath, $cookies) = each %$paths) {
		389	next unless $cpath eq substr $upath, 0, length $cpath;
		390
		391	while (my ($cookie, $kv) = each %$cookies) {
		392	next if $uscheme ne "https" && exists $kv->{secure};
		393
		394	if (exists $kv->{expires}) {
		395	if (AE::now > parse_date ($kv->{expires})) {
		396	delete $cookies->{$cookie};
		397	next;
		398	}
		399	}
		400
		401	my $value = $kv->{value};
		402
		403	if ($value =~ /[=;,[:space:]]/) {
		404	$value =~ s/([\\"])/\\$1/g;
		405	$value = "\"$value\"";
		406	}
		407
		408	push @cookies, "$cookie=$value";
		409	}
		410	}
		411	}
		412
		413	\@cookies
		414	}
		415
		416	# parse set_cookie header into jar
		417	sub cookie_jar_set_cookie($$) {
		418	my ($jar, $set_cookie) = @_;
		419
		420	for ($set_cookie) {
		421	# parse NAME=VALUE
		422	my @kv;
		423
		424	while (
		425	m{
		426	\G\s*
		427	(?:
		428	expires \s=\s ([A-Z][a-z][a-z],\ [^,;]+)
		429	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		430	)
		431	}gcxsi
		432	) {
		433	my $name = $2;
		434	my $value = $4;
		435
		436	unless (defined $name) {
		437	# expires
		438	$name = "expires";
		439	$value = $1;
		440	} elsif (!defined $value) {
		441	# quoted
		442	$value = $3;
		443	$value =~ s/\\(.)/$1/gs;
		444	}
		445
		446	push @kv, lc $name, $value;
		447
		448	last unless /\G\s*;/gc;
		449	}
		450
		451	last unless @kv;
		452
		453	my $name = shift @kv;
		454	my %kv = (value => shift @kv, @kv);
		455
		456	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		457	if exists $kv{"max-age"};
		458
		459	my $cdom;
		460	my $cpath = (delete $kv{path}) \|\| "/";
		461
		462	if (exists $kv{domain}) {
		463	$cdom = delete $kv{domain};
		464
		465	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		466
		467	next if $cdom =~ /\.$/;
		468
		469	# this is not rfc-like and not netscape-like. go figure.
		470	my $ndots = $cdom =~ y/.//;
		471	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		472	} else {
		473	$cdom = $uhost;
		474	}
		475
		476	# store it
		477	$arg{cookie_jar}{version} = 1;
		478	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		479
		480	redo if /\G\s*,/gc;
		481	}
		482	}
		483	}
		484
		485	# continue to parse $_ for headers and place them into the arg
		486	sub parse_hdr() {
		487	my %hdr;
		488
		489	# things seen, not parsed:
		490	# p3pP="NON CUR OTPi OUR NOR UNI"
		491
		492	$hdr{lc $1} .= ",$2"
		493	while /\G
		494	([^:\000-\037]*):
		495	[\011\040]*
		496	((?: [^\012]+ \| \012[\011\040] )*)
		497	\012
		498	/gxc;
		499
		500	/\G$/
		501	or return;
		502
		503	# remove the "," prefix we added to all headers above
		504	substr $_, 0, 1, ""
		505	for values %hdr;
		506
		507	\%hdr
		508	}
		509
354	our $qr_nlnl = qr{(?<![^\012])\015?\012};	510	our $qr_nlnl = qr{(?<![^\012])\015?\012};
355		511
356	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	512	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
357	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	513	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
358		514
…		…
377	my @pseudo = (URL => $url);	533	my @pseudo = (URL => $url);
378	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	534	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
379		535
380	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	536	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
381		537
382	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	538	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
383	if $recurse < 0;	539	if $recurse < 0;
384		540
385	my $proxy = $arg{proxy} \|\| $PROXY;	541	my $proxy = $arg{proxy} \|\| $PROXY;
386	my $timeout = $arg{timeout} \|\| $TIMEOUT;	542	my $timeout = $arg{timeout} \|\| $TIMEOUT;
387		543
…		…
390		546
391	$uscheme = lc $uscheme;	547	$uscheme = lc $uscheme;
392		548
393	my $uport = $uscheme eq "http" ? 80	549	my $uport = $uscheme eq "http" ? 80
394	: $uscheme eq "https" ? 443	550	: $uscheme eq "https" ? 443
395	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });	551	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
396		552
397	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	553	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
398	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	554	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
399		555
400	my $uhost = $1;	556	my $uhost = $1;
401	$uport = $2 if defined $2;	557	$uport = $2 if defined $2;
402		558
403	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	559	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
…		…
408		564
409	$upath =~ s%^/?%/%;	565	$upath =~ s%^/?%/%;
410		566
411	# cookie processing	567	# cookie processing
412	if (my $jar = $arg{cookie_jar}) {	568	if (my $jar = $arg{cookie_jar}) {
413	%$jar = () if $jar->{version} != 1;	569	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
414		570
415	my @cookie;
416
417	while (my ($chost, $v) = each %$jar) {
418	if ($chost =~ /^\./) {
419	next unless $chost eq substr $uhost, -length $chost;
420	} elsif ($chost =~ /\./) {
421	next unless $chost eq $uhost;
422	} else {
423	next;
424	}
425
426	while (my ($cpath, $v) = each %$v) {
427	next unless $cpath eq substr $upath, 0, length $cpath;
428
429	while (my ($k, $v) = each %$v) {
430	next if $uscheme ne "https" && exists $v->{secure};
431	my $value = $v->{value};
432	$value =~ s/([\\"])/\\$1/g;
433	push @cookie, "$k=\"$value\"";
434	}
435	}
436	}
437
438	$hdr{cookie} = join "; ", @cookie	571	$hdr{cookie} = join "; ", @$cookies
439	if @cookie;	572	if @$cookies;
440	}	573	}
441		574
442	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	575	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
443		576
444	if ($proxy) {	577	if ($proxy) {
…		…
452	} else {	585	} else {
453	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	586	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
454	}	587	}
455		588
456	# leave out fragment and query string, just a heuristic	589	# leave out fragment and query string, just a heuristic
457	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	590	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
458	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	591	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
459		592
460	$hdr{"content-length"} = length $arg{body}	593	$hdr{"content-length"} = length $arg{body}
461	if length $arg{body} \|\| $method ne "GET";	594	if length $arg{body} \|\| $method ne "GET";
462		595
		596	$hdr{connection} = "close TE"; #1.1
		597	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		598
463	my %state = (connect_guard => 1);	599	my %state = (connect_guard => 1);
464		600
465	_get_slot $uhost, sub {	601	_get_slot $uhost, sub {
466	$state{slot_guard} = shift;	602	$state{slot_guard} = shift;
467		603
468	return unless $state{connect_guard};	604	return unless $state{connect_guard};
469		605
470	my $tcp_connect = $arg{tcp_connect}	606	my $connect_cb = sub {
471	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
472
473	$state{connect_guard} = $tcp_connect->(
474	$rhost,
475	$rport,
476	sub {
477	$state{fh} = shift	607	$state{fh} = shift
478	or do {	608	or do {
479	my $err = "$!";	609	my $err = "$!";
480	%state = ();	610	%state = ();
481	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	611	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
482	};	612	};
483		613
484	pop; # free memory, save a tree	614	pop; # free memory, save a tree
485		615
486	return unless delete $state{connect_guard};	616	return unless delete $state{connect_guard};
487		617
488	# get handle	618	# get handle
489	$state{handle} = new AnyEvent::Handle	619	$state{handle} = new AnyEvent::Handle
490	fh => $state{fh},	620	fh => $state{fh},
491	peername => $rhost,	621	peername => $rhost,
492	tls_ctx => $arg{tls_ctx},	622	tls_ctx => $arg{tls_ctx},
493	# these need to be reconfigured on keepalive handles	623	# these need to be reconfigured on keepalive handles
494	timeout => $timeout,	624	timeout => $timeout,
495	on_error => sub {	625	on_error => sub {
496	%state = ();	626	%state = ();
497	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	627	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
498	},	628	},
499	on_eof => sub {	629	on_eof => sub {
500	%state = ();	630	%state = ();
501	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	631	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
502	},	632	},
503	;	633	;
504		634
505	# limit the number of persistent connections	635	# limit the number of persistent connections
506	# keepalive not yet supported	636	# keepalive not yet supported
507	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	637	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
508	# ++$KA_COUNT{$_[1]};	638	# ++$KA_COUNT{$_[1]};
509	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	639	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
510	# --$KA_COUNT{$_[1]}	640	# --$KA_COUNT{$_[1]}
511	# };	641	# };
512	# $hdr{connection} = "keep-alive";	642	# $hdr{connection} = "keep-alive";
513	# } else {
514	delete $hdr{connection};
515	# }	643	# }
516		644
517	$state{handle}->starttls ("connect") if $rscheme eq "https";	645	$state{handle}->starttls ("connect") if $rscheme eq "https";
518		646
519	# handle actual, non-tunneled, request	647	# handle actual, non-tunneled, request
520	my $handle_actual_request = sub {	648	my $handle_actual_request = sub {
521	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	649	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
522		650
523	# send request	651	# send request
524	$state{handle}->push_write (	652	$state{handle}->push_write (
525	"$method $rpath HTTP/1.0\015\012"	653	"$method $rpath HTTP/1.1\015\012"
526	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	654	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
527	. "\015\012"	655	. "\015\012"
528	. (delete $arg{body})	656	. (delete $arg{body})
529	);	657	);
530		658
531	# return if error occured during push_write()	659	# return if error occured during push_write()
532	return unless %state;	660	return unless %state;
533		661
534	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use	662	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
535		663
536	# status line and headers	664	# status line and headers
537	$state{handle}->push_read (line => $qr_nlnl, sub {	665	$state{read_response} = sub {
538	for ("$_[1]") {	666	for ("$_[1]") {
539	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	667	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
540		668
541	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc	669	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
542	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo }));	670	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
543		671
		672	# 100 Continue handling
		673	# should not happen as we don't send expect: 100-continue,
		674	# but we handle it just in case.
		675	# since we send the request body regardless, if we get an error
		676	# we are out of-sync, which we currently do NOT handle correctly.
		677	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		678	if $2 eq 100;
		679
544	push @pseudo,	680	push @pseudo,
545	HTTPVersion => $1,	681	HTTPVersion => $1,
546	Status => $2,	682	Status => $2,
547	Reason => $3,	683	Reason => $3,
548	;	684	;
549		685
550	# things seen, not parsed:	686	my $hdr = parse_hdr
551	# p3pP="NON CUR OTPi OUR NOR UNI"
552
553	$hdr{lc $1} .= ",$2"
554	while /\G
555	([^:\000-\037]*):
556	[\011\040]*
557	((?: [^\012]+ \| \012[\011\040] )*)
558	\012
559	/gxc;
560
561	/\G$/
562	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));	687	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		688
		689	%hdr = (%$hdr, @pseudo);
		690	}
		691
		692	# redirect handling
		693	# microsoft and other shitheads don't give a shit for following standards,
		694	# try to support some common forms of broken Location headers.
		695	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		696	$hdr{location} =~ s/^\.\/+//;
		697
		698	my $url = "$rscheme://$uhost:$uport";
		699
		700	unless ($hdr{location} =~ s/^\///) {
		701	$url .= $upath;
		702	$url =~ s/\/[^\/]*$//;
563	}	703	}
564		704
565	# remove the "," prefix we added to all headers above	705	$hdr{location} = "$url/$hdr{location}";
566	substr $_, 0, 1, ""	706	}
567	for values %hdr;
568		707
569	# patch in all pseudo headers	708	my $redirect;
570	%hdr = (%hdr, @pseudo);
571		709
		710	if ($recurse) {
		711	my $status = $hdr{Status};
		712
		713	# industry standard is to redirect POST as GET for
		714	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		715	# also, the UA should ask the user for 301 and 307 and POST,
		716	# industry standard seems to be to simply follow.
		717	# we go with the industry standard.
		718	if ($status == 301 or $status == 302 or $status == 303) {
		719	# HTTP/1.1 is unclear on how to mutate the method
		720	$method = "GET" unless $method eq "HEAD";
572	# redirect handling	721	$redirect = 1;
573	# microsoft and other shitheads don't give a shit for following standards,	722	} elsif ($status == 307) {
574	# try to support some common forms of broken Location headers.	723	$redirect = 1;
575	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	724	}
576	$hdr{location} =~ s/^\.\/+//;	725	}
577		726
578	my $url = "$rscheme://$uhost:$uport";	727	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		728	my $keepalive = pop;
579		729
580	unless ($hdr{location} =~ s/^\///) {	730	$state{handle}->destroy if $state{handle};
		731	%state = ();
		732
		733	if (defined $_[1]) {
		734	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		735	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		736	}
		737
		738	# set-cookie processing
		739	if ($arg{cookie_jar}) {
		740	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"};
		741
		742	if ($redirect && exists $hdr{location}) {
		743	# we ignore any errors, as it is very common to receive
		744	# Content-Length != 0 but no actual body
		745	# we also access %hdr, as $_[1] might be an erro
		746	http_request (
		747	$method => $hdr{location},
		748	%arg,
		749	recurse => $recurse - 1,
		750	Redirect => [$_[0], \%hdr],
		751	$cb);
		752	} else {
		753	$cb->($_[0], \%hdr);
		754	}
		755	};
		756
		757	my $len = $hdr{"content-length"};
		758
		759	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		760	$finish->(undef, 598 => "Request cancelled by on_header");
		761	} elsif (
		762	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		763	or $method eq "HEAD"
		764	or (defined $len && !$len)
		765	) {
		766	# no body
		767	$finish->("", undef, undef, 1);
		768	} else {
		769	# body handling, many different code paths
		770	# - no body expected
		771	# - want_body_handle
		772	# - te chunked
		773	# - 2x length known (with or without on_body)
		774	# - 2x length not known (with or without on_body)
		775	if (!$redirect && $arg{want_body_handle}) {
		776	$_[0]->on_eof (undef);
		777	$_[0]->on_error (undef);
		778	$_[0]->on_read (undef);
		779
		780	$finish->(delete $state{handle});
		781
		782	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		783	my $cl = 0;
		784	my $body = undef;
		785	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		786
		787	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		788
		789	my $read_chunk; $read_chunk = sub {
		790	$_[1] =~ /^([0-9a-fA-F]+)/
		791	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		792
		793	my $len = hex $1;
		794
		795	if ($len) {
581	$url .= $upath;	796	$cl += $len;
582	$url =~ s/\/[^\/]*$//;	797
		798	$_[0]->push_read (chunk => $len, sub {
		799	$on_body->($_[1], \%hdr)
		800	or return $finish->(undef, 598 => "Request cancelled by on_body");
		801
		802	$_[0]->push_read (line => sub {
		803	length $_[1]
		804	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
		805	$_[0]->push_read (line => $read_chunk);
		806	});
		807	});
		808	} else {
		809	$hdr{"content-length"} \|\|= $cl;
		810
		811	$_[0]->push_read (line => $qr_nlnl, sub {
		812	if (length $_[1]) {
		813	for ("$_[1]") {
		814	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		815
		816	my $hdr = parse_hdr
		817	or return $finish->(undef, 599 => "Garbled response trailers");
		818
		819	%hdr = (%hdr, %$hdr);
		820	}
		821	}
		822
		823	$finish->($body, undef, undef, 1);
		824	});
		825	}
		826	};
		827
		828	$_[0]->push_read (line => $read_chunk);
		829
		830	} elsif ($arg{on_body}) {
		831	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		832
		833	if ($len) {
		834	$_[0]->on_read (sub {
		835	$len -= length $_[0]{rbuf};
		836
		837	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		838	or return $finish->(undef, 598 => "Request cancelled by on_body");
		839
		840	$len > 0
		841	or $finish->("", undef, undef, 1);
		842	});
		843	} else {
		844	$_[0]->on_eof (sub {
		845	$finish->("");
		846	});
		847	$_[0]->on_read (sub {
		848	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		849	or $finish->(undef, 598 => "Request cancelled by on_body");
		850	});
583	}	851	}
584
585	$hdr{location} = "$url/$hdr{location}";
586	}	852	} else {
		853	$_[0]->on_eof (undef);
587		854
588	my $redirect;
589
590	if ($recurse) {	855	if ($len) {
591	my $status = $hdr{Status};	856	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
592		857	$_[0]->on_read (sub {
593	# industry standard is to redirect POST as GET for	858	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
594	# 301, 302 and 303, in contrast to http/1.0 and 1.1.	859	if $len <= length $_[0]{rbuf};
595	# also, the UA should ask the user for 301 and 307 and POST,
596	# industry standard seems to be to simply follow.
597	# we go with the industry standard.
598	if ($status == 301 or $status == 302 or $status == 303) {
599	# HTTP/1.1 is unclear on how to mutate the method
600	$method = "GET" unless $method eq "HEAD";
601	$redirect = 1;	860	});
602	} elsif ($status == 307) {	861	} else {
		862	$_[0]->on_error (sub {
		863	($! == Errno::EPIPE \|\| !$!)
		864	? $finish->(delete $_[0]{rbuf})
		865	: $finish->(undef, 599 => $_[2]);
603	$redirect = 1;	866	});
		867	$_[0]->on_read (sub { });
604	}	868	}
605	}	869	}
606
607	my $finish = sub {
608	$state{handle}->destroy if $state{handle};
609	%state = ();
610
611	# set-cookie processing
612	if ($arg{cookie_jar}) {
613	for ($_[1]{"set-cookie"}) {
614	# parse NAME=VALUE
615	my @kv;
616
617	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
618	my $name = $1;
619	my $value = $3;
620
621	unless ($value) {
622	$value = $2;
623	$value =~ s/\\(.)/$1/gs;
624	}
625
626	push @kv, $name => $value;
627
628	last unless /\G\s*;/gc;
629	}
630
631	last unless @kv;
632
633	my $name = shift @kv;
634	my %kv = (value => shift @kv, @kv);
635
636	my $cdom;
637	my $cpath = (delete $kv{path}) \|\| "/";
638
639	if (exists $kv{domain}) {
640	$cdom = delete $kv{domain};
641
642	$cdom =~ s/^\.?/./; # make sure it starts with a "."
643
644	next if $cdom =~ /\.$/;
645
646	# this is not rfc-like and not netscape-like. go figure.
647	my $ndots = $cdom =~ y/.//;
648	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
649	} else {
650	$cdom = $uhost;
651	}
652
653	# store it
654	$arg{cookie_jar}{version} = 1;
655	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
656
657	redo if /\G\s*,/gc;
658	}
659	}
660
661	if ($redirect && exists $hdr{location}) {
662	# we ignore any errors, as it is very common to receive
663	# Content-Length != 0 but no actual body
664	# we also access %hdr, as $_[1] might be an erro
665	http_request (
666	$method => $hdr{location},
667	%arg,
668	recurse => $recurse - 1,
669	Redirect => \@_,
670	$cb);
671	} else {
672	$cb->($_[0], $_[1]);
673	}
674	};
675
676	my $len = $hdr{"content-length"};
677
678	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
679	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
680	} elsif (
681	$hdr{Status} =~ /^(?:1..\|[23]04)$/
682	or $method eq "HEAD"
683	or (defined $len && !$len)
684	) {
685	# no body
686	$finish->("", \%hdr);
687	} else {
688	# body handling, four different code paths
689	# for want_body_handle, on_body (2x), normal (2x)
690	# we might read too much here, but it does not matter yet (no pers. connections)
691	if (!$redirect && $arg{want_body_handle}) {
692	$_[0]->on_eof (undef);
693	$_[0]->on_error (undef);
694	$_[0]->on_read (undef);
695
696	$finish->(delete $state{handle}, \%hdr);
697
698	} elsif ($arg{on_body}) {
699	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
700	if ($len) {
701	$_[0]->on_eof (undef);
702	$_[0]->on_read (sub {
703	$len -= length $_[0]{rbuf};
704
705	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
706	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
707
708	$len > 0
709	or $finish->("", \%hdr);
710	});
711	} else {
712	$_[0]->on_eof (sub {
713	$finish->("", \%hdr);
714	});
715	$_[0]->on_read (sub {
716	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
717	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
718	});
719	}
720	} else {
721	$_[0]->on_eof (undef);
722
723	if ($len) {
724	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
725	$_[0]->on_read (sub {
726	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
727	if $len <= length $_[0]{rbuf};
728	});
729	} else {
730	$_[0]->on_error (sub {
731	($! == Errno::EPIPE \|\| !$!)
732	? $finish->(delete $_[0]{rbuf}, \%hdr)
733	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });
734	});
735	$_[0]->on_read (sub { });
736	}
737	}
738	}
739	});	870	}
740	};	871	};
741		872
		873	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		874	};
		875
742	# now handle proxy-CONNECT method	876	# now handle proxy-CONNECT method
743	if ($proxy && $uscheme eq "https") {	877	if ($proxy && $uscheme eq "https") {
744	# oh dear, we have to wrap it into a connect request	878	# oh dear, we have to wrap it into a connect request
745		879
746	# maybe re-use $uauthority with patched port?	880	# maybe re-use $uauthority with patched port?
747	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	881	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
748	$state{handle}->push_read (line => $qr_nlnl, sub {	882	$state{handle}->push_read (line => $qr_nlnl, sub {
749	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	883	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
750	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo }));	884	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
751		885
752	if ($2 == 200) {	886	if ($2 == 200) {
753	$rpath = $upath;	887	$rpath = $upath;
754	&$handle_actual_request;	888	&$handle_actual_request;
755	} else {	889	} else {
756	%state = ();	890	%state = ();
757	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	891	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
758	}
759	});	892	}
		893	});
760	} else {	894	} else {
761	&$handle_actual_request;	895	&$handle_actual_request;
762	}
763
764	},	896	}
765	$arg{on_prepare} \|\| sub { $timeout }
766	);	897	};
		898
		899	my $tcp_connect = $arg{tcp_connect}
		900	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		901
		902	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		903
767	};	904	};
768		905
769	defined wantarray && AnyEvent::Util::guard { %state = () }	906	defined wantarray && AnyEvent::Util::guard { %state = () }
770	}	907	}
771		908
…		…
813	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP	950	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
814	Date (RFC 2616).	951	Date (RFC 2616).
815		952
816	=item $timestamp = AnyEvent::HTTP::parse_date $date	953	=item $timestamp = AnyEvent::HTTP::parse_date $date
817		954
818	Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX	955	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and
819	timestamp, or C<undef> if the date cannot be parsed.	956	returns the corresponding POSIX timestamp, or C<undef> if the date cannot
		957	be parsed.
820		958
821	=item $AnyEvent::HTTP::MAX_RECURSE	959	=item $AnyEvent::HTTP::MAX_RECURSE
822		960
823	The default value for the C<recurse> request parameter (default: C<10>).	961	The default value for the C<recurse> request parameter (default: C<10>).
824		962
…		…
863	sub parse_date($) {	1001	sub parse_date($) {
864	my ($date) = @_;	1002	my ($date) = @_;
865		1003
866	my ($d, $m, $y, $H, $M, $S);	1004	my ($d, $m, $y, $H, $M, $S);
867		1005
868	if ($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$/) {	1006	if ($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$/) {
869	# RFC 822/1123, required by RFC 2616	1007	# RFC 822/1123, required by RFC 2616 (with " ")
		1008	# cookie dates (with "-")
		1009
870	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);	1010	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
871		1011
872	} elsif ($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$/) {	1012	} elsif ($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$/) {
873	# RFC 850	1013	# RFC 850
874	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);	1014	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.63 by root, Thu Dec 30 04:31:55 2010 UTC vs. Revision 1.72 by root, Fri Dec 31 20:59:19 2010 UTC

Diff Legend

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.63 by root, Thu Dec 30 04:31:55 2010 UTC vs.
Revision 1.72 by root, Fri Dec 31 20:59:19 2010 UTC