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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.62 by root, Thu Dec 30 04:30:24 2010 UTC vs.
Revision 1.79 by root, Sat Jan 1 20:01:07 2011 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
…		…
119		122
120	If the server sends a header multiple times, then their contents will be	123	If the server sends a header multiple times, then their contents will be
121	joined together with a comma (C<,>), as per the HTTP spec.	124	joined together with a comma (C<,>), as per the HTTP spec.
122		125
123	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
124	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
125	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
126	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receiving or processing.
		138
		139	=item 598 - user aborted request via C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
127		144
128	A typical callback might look like this:	145	A typical callback might look like this:
129		146
130	sub {	147	sub {
131	my ($body, $hdr) = @_;	148	my ($body, $hdr) = @_;
…		…
147	Whether to recurse requests or not, e.g. on redirects, authentication	164	Whether to recurse requests or not, e.g. on redirects, authentication
148	retries and so on, and how often to do so.	165	retries and so on, and how often to do so.
149		166
150	=item headers => hashref	167	=item headers => hashref
151		168
152	The request headers to use, with the header name (I<MUST be in lowercase>)	169	The request headers to use. Currently, C<http_request> may provide its own
153	as key and header value as hash value.	170	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
154		171	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
155	Currently, http_request> may provide its own C<host>, C<content-length>,	172	(this can be suppressed by using C<undef> for these headers in which case
156	C<connection> and C<cookie> headers and will provide defaults for	173	they won't be sent at all).
157	C<user-agent> and C<referer> (this can be suppressed by using a value of
158	C<undef> for these headers in which case they won't be sent at all).
159		174
160	=item timeout => $seconds	175	=item timeout => $seconds
161		176
162	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
163	the timeout, as will read or write activity, i.e. this is not an overall	178	the timeout, as will read or write activity, i.e. this is not an overall
…		…
173	C<$scheme> must be either missing, C<http> for HTTP or C<https> for	188	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
174	HTTPS.	189	HTTPS.
175		190
176	=item body => $string	191	=item body => $string
177		192
178	The request body, usually empty. Will be-sent as-is (future versions of	193	The request body, usually empty. Will be sent as-is (future versions of
179	this module might offer more options).	194	this module might offer more options).
180		195
181	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
182		197
183	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
184	based on the original netscape specification.	199	based on the original netscape specification.
185		200
186	The C<$hash_ref> must be an (initially empty) hash reference which will	201	The C<$hash_ref> must be an (initially empty) hash reference which will
187	get updated automatically. It is possible to save the cookie_jar to	202	get updated automatically. It is possible to save the cookie jar to
188	persistent storage with something like JSON or Storable, but this is not	203	persistent storage with something like JSON or Storable, but this is not
189	recommended, as expiry times are currently being ignored.	204	recommended, as session-only cookies might survive longer than expected.
190		205
191	Note that this cookie implementation is not of very high quality, nor	206	Note that this cookie implementation is not meant to be complete. If
192	meant to be complete. If you want complete cookie management you have to	207	you want complete cookie management you have to do that on your
193	do that on your own. C<cookie_jar> is meant as a quick fix to get some	208	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
194	cookie-using sites working. Cookies are a privacy disaster, do not use	209	working. Cookies are a privacy disaster, do not use them unless required
195	them unless required to.	210	to.
		211
		212	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		213	headers will be set and handled by this module, otherwise they will be
		214	left untouched.
196		215
197	=item tls_ctx => $scheme \| $tls_ctx	216	=item tls_ctx => $scheme \| $tls_ctx
198		217
199	Specifies the AnyEvent::TLS context to be used for https connections. This	218	Specifies the AnyEvent::TLS context to be used for https connections. This
200	parameter follows the same rules as the C<tls_ctx> parameter to	219	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
239		258
240	This callback is useful, among other things, to quickly reject unwanted	259	This callback is useful, among other things, to quickly reject unwanted
241	content, which, if it is supposed to be rare, can be faster than first	260	content, which, if it is supposed to be rare, can be faster than first
242	doing a C<HEAD> request.	261	doing a C<HEAD> request.
243		262
		263	The downside is that cancelling the request makes it impossible to re-use
		264	the connection. Also, the C<on_header> callback will not receive any
		265	trailer (headers sent after the response body).
		266
244	Example: cancel the request unless the content-type is "text/html".	267	Example: cancel the request unless the content-type is "text/html".
245		268
246	on_header => sub {	269	on_header => sub {
247	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	270	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
248	},	271	},
…		…
254	string instead of the body data.	277	string instead of the body data.
255		278
256	It has to return either true (in which case AnyEvent::HTTP will continue),	279	It has to return either true (in which case AnyEvent::HTTP will continue),
257	or false, in which case AnyEvent::HTTP will cancel the download (and call	280	or false, in which case AnyEvent::HTTP will cancel the download (and call
258	the completion callback with an error code of C<598>).	281	the completion callback with an error code of C<598>).
		282
		283	The downside to cancelling the request is that it makes it impossible to
		284	re-use the connection.
259		285
260	This callback is useful when the data is too large to be held in memory	286	This callback is useful when the data is too large to be held in memory
261	(so the callback writes it to a file) or when only some information should	287	(so the callback writes it to a file) or when only some information should
262	be extracted, or when the body should be processed incrementally.	288	be extracted, or when the body should be processed incrementally.
263		289
…		…
289	If you think you need this, first have a look at C<on_body>, to see if	315	If you think you need this, first have a look at C<on_body>, to see if
290	that doesn't solve your problem in a better way.	316	that doesn't solve your problem in a better way.
291		317
292	=back	318	=back
293		319
294	Example: make a simple HTTP GET request for http://www.nethype.de/	320	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		321	the response body.
295		322
296	http_request GET => "http://www.nethype.de/", sub {	323	http_request GET => "http://www.nethype.de/", sub {
297	my ($body, $hdr) = @_;	324	my ($body, $hdr) = @_;
298	print "$body\n";	325	print "$body\n";
299	};	326	};
300		327
301	Example: make a HTTP HEAD request on https://www.google.com/, use a	328	Example: do a HTTP HEAD request on https://www.google.com/, use a
302	timeout of 30 seconds.	329	timeout of 30 seconds.
303		330
304	http_request	331	http_request
305	GET => "https://www.google.com",	332	GET => "https://www.google.com",
306	timeout => 30,	333	timeout => 30,
…		…
309	use Data::Dumper;	336	use Data::Dumper;
310	print Dumper $hdr;	337	print Dumper $hdr;
311	}	338	}
312	;	339	;
313		340
314	Example: make another simple HTTP GET request, but immediately try to	341	Example: do another simple HTTP GET request, but immediately try to
315	cancel it.	342	cancel it.
316		343
317	my $request = http_request GET => "http://www.nethype.de/", sub {	344	my $request = http_request GET => "http://www.nethype.de/", sub {
318	my ($body, $hdr) = @_;	345	my ($body, $hdr) = @_;
319	print "$body\n";	346	print "$body\n";
…		…
351	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	378	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
352		379
353	_slot_schedule $_[0];	380	_slot_schedule $_[0];
354	}	381	}
355		382
		383	# extract cookies from jar
		384	sub cookie_jar_extract($$$$) {
		385	my ($jar, $uscheme, $uhost, $upath) = @_;
		386
		387	%$jar = () if $jar->{version} != 1;
		388
		389	my @cookies;
		390
		391	while (my ($chost, $paths) = each %$jar) {
		392	next unless ref $paths;
		393
		394	if ($chost =~ /^\./) {
		395	next unless $chost eq substr $uhost, -length $chost;
		396	} elsif ($chost =~ /\./) {
		397	next unless $chost eq $uhost;
		398	} else {
		399	next;
		400	}
		401
		402	while (my ($cpath, $cookies) = each %$paths) {
		403	next unless $cpath eq substr $upath, 0, length $cpath;
		404
		405	while (my ($cookie, $kv) = each %$cookies) {
		406	next if $uscheme ne "https" && exists $kv->{secure};
		407
		408	if (exists $kv->{expires}) {
		409	if (AE::now > parse_date ($kv->{expires})) {
		410	delete $cookies->{$cookie};
		411	next;
		412	}
		413	}
		414
		415	my $value = $kv->{value};
		416
		417	if ($value =~ /[=;,[:space:]]/) {
		418	$value =~ s/([\\"])/\\$1/g;
		419	$value = "\"$value\"";
		420	}
		421
		422	push @cookies, "$cookie=$value";
		423	}
		424	}
		425	}
		426
		427	\@cookies
		428	}
		429
		430	# parse set_cookie header into jar
		431	sub cookie_jar_set_cookie($$$) {
		432	my ($jar, $set_cookie, $uhost) = @_;
		433
		434	for ($set_cookie) {
		435	# parse NAME=VALUE
		436	my @kv;
		437
		438	# expires is not http-compliant in the original cookie-spec,
		439	# we support the official date format and some extensions
		440	while (
		441	m{
		442	\G\s*
		443	(?:
		444	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
		445	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		446	)
		447	}gcxsi
		448	) {
		449	my $name = $2;
		450	my $value = $4;
		451
		452	unless (defined $name) {
		453	# expires
		454	$name = "expires";
		455	$value = $1;
		456	} elsif (!defined $value) {
		457	# quoted
		458	$value = $3;
		459	$value =~ s/\\(.)/$1/gs;
		460	}
		461
		462	push @kv, lc $name, $value;
		463
		464	last unless /\G\s*;/gc;
		465	}
		466
		467	last unless @kv;
		468
		469	my $name = shift @kv;
		470	my %kv = (value => shift @kv, @kv);
		471
		472	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		473	if exists $kv{"max-age"};
		474
		475	my $cdom;
		476	my $cpath = (delete $kv{path}) \|\| "/";
		477
		478	if (exists $kv{domain}) {
		479	$cdom = delete $kv{domain};
		480
		481	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		482
		483	next if $cdom =~ /\.$/;
		484
		485	# this is not rfc-like and not netscape-like. go figure.
		486	my $ndots = $cdom =~ y/.//;
		487	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		488	} else {
		489	$cdom = $uhost;
		490	}
		491
		492	# store it
		493	$jar->{version} = 1;
		494	$jar->{$cdom}{$cpath}{$name} = \%kv;
		495
		496	redo if /\G\s*,/gc;
		497	}
		498	}
		499
		500	# continue to parse $_ for headers and place them into the arg
		501	sub parse_hdr() {
		502	my %hdr;
		503
		504	# things seen, not parsed:
		505	# p3pP="NON CUR OTPi OUR NOR UNI"
		506
		507	$hdr{lc $1} .= ",$2"
		508	while /\G
		509	([^:\000-\037]*):
		510	[\011\040]*
		511	((?: [^\012]+ \| \012[\011\040] )*)
		512	\012
		513	/gxc;
		514
		515	/\G$/
		516	or return;
		517
		518	# remove the "," prefix we added to all headers above
		519	substr $_, 0, 1, ""
		520	for values %hdr;
		521
		522	\%hdr
		523	}
		524
356	our $qr_nlnl = qr{(?<![^\012])\015?\012};	525	our $qr_nlnl = qr{(?<![^\012])\015?\012};
357		526
358	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	527	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
359	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	528	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
360		529
…		…
379	my @pseudo = (URL => $url);	548	my @pseudo = (URL => $url);
380	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	549	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
381		550
382	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	551	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
383		552
384	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	553	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
385	if $recurse < 0;	554	if $recurse < 0;
386		555
387	my $proxy = $arg{proxy} \|\| $PROXY;	556	my $proxy = $arg{proxy} \|\| $PROXY;
388	my $timeout = $arg{timeout} \|\| $TIMEOUT;	557	my $timeout = $arg{timeout} \|\| $TIMEOUT;
389		558
…		…
392		561
393	$uscheme = lc $uscheme;	562	$uscheme = lc $uscheme;
394		563
395	my $uport = $uscheme eq "http" ? 80	564	my $uport = $uscheme eq "http" ? 80
396	: $uscheme eq "https" ? 443	565	: $uscheme eq "https" ? 443
397	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });	566	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
398		567
399	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	568	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
400	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	569	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
401		570
402	my $uhost = $1;	571	my $uhost = $1;
403	$uport = $2 if defined $2;	572	$uport = $2 if defined $2;
404		573
405	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	574	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
…		…
410		579
411	$upath =~ s%^/?%/%;	580	$upath =~ s%^/?%/%;
412		581
413	# cookie processing	582	# cookie processing
414	if (my $jar = $arg{cookie_jar}) {	583	if (my $jar = $arg{cookie_jar}) {
415	%$jar = () if $jar->{version} != 1;	584	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
416		585
417	my @cookie;
418
419	while (my ($chost, $v) = each %$jar) {
420	if ($chost =~ /^\./) {
421	next unless $chost eq substr $uhost, -length $chost;
422	} elsif ($chost =~ /\./) {
423	next unless $chost eq $uhost;
424	} else {
425	next;
426	}
427
428	while (my ($cpath, $v) = each %$v) {
429	next unless $cpath eq substr $upath, 0, length $cpath;
430
431	while (my ($k, $v) = each %$v) {
432	next if $uscheme ne "https" && exists $v->{secure};
433	my $value = $v->{value};
434	$value =~ s/([\\"])/\\$1/g;
435	push @cookie, "$k=\"$value\"";
436	}
437	}
438	}
439
440	$hdr{cookie} = join "; ", @cookie	586	$hdr{cookie} = join "; ", @$cookies
441	if @cookie;	587	if @$cookies;
442	}	588	}
443		589
444	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	590	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
445		591
446	if ($proxy) {	592	if ($proxy) {
…		…
454	} else {	600	} else {
455	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	601	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
456	}	602	}
457		603
458	# leave out fragment and query string, just a heuristic	604	# leave out fragment and query string, just a heuristic
459	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	605	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
460	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	606	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
461		607
462	$hdr{"content-length"} = length $arg{body}	608	$hdr{"content-length"} = length $arg{body}
463	if length $arg{body} \|\| $method ne "GET";	609	if length $arg{body} \|\| $method ne "GET";
464		610
		611	$hdr{connection} = "close TE"; #1.1
		612	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		613
465	my %state = (connect_guard => 1);	614	my %state = (connect_guard => 1);
466		615
467	_get_slot $uhost, sub {	616	_get_slot $uhost, sub {
468	$state{slot_guard} = shift;	617	$state{slot_guard} = shift;
469		618
470	return unless $state{connect_guard};	619	return unless $state{connect_guard};
471		620
472	my $tcp_connect = $arg{tcp_connect}	621	my $ae_error = 595; # connecting
473	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
474		622
475	$state{connect_guard} = $tcp_connect->(	623	my $connect_cb = sub {
476	$rhost,
477	$rport,
478	sub {
479	$state{fh} = shift	624	$state{fh} = shift
480	or do {	625	or do {
481	my $err = "$!";	626	my $err = "$!";
482	%state = ();	627	%state = ();
483	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	628	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
484	};	629	};
485		630
486	pop; # free memory, save a tree
487
488	return unless delete $state{connect_guard};	631	return unless delete $state{connect_guard};
489		632
490	# get handle	633	# get handle
491	$state{handle} = new AnyEvent::Handle	634	$state{handle} = new AnyEvent::Handle
492	fh => $state{fh},	635	fh => $state{fh},
493	peername => $rhost,	636	peername => $rhost,
494	tls_ctx => $arg{tls_ctx},	637	tls_ctx => $arg{tls_ctx},
495	# these need to be reconfigured on keepalive handles	638	# these need to be reconfigured on keepalive handles
496	timeout => $timeout,	639	timeout => $timeout,
497	on_error => sub {	640	on_error => sub {
498	%state = ();	641	%state = ();
499	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	642	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
500	},	643	},
501	on_eof => sub {	644	on_eof => sub {
502	%state = ();	645	%state = ();
503	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	646	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
504	},	647	},
505	;	648	;
506		649
507	# limit the number of persistent connections	650	# limit the number of persistent connections
508	# keepalive not yet supported	651	# keepalive not yet supported
509	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	652	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
510	# ++$KA_COUNT{$_[1]};	653	# ++$KA_COUNT{$_[1]};
511	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	654	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
512	# --$KA_COUNT{$_[1]}	655	# --$KA_COUNT{$_[1]}
513	# };	656	# };
514	# $hdr{connection} = "keep-alive";	657	# $hdr{connection} = "keep-alive";
515	# } else {
516	delete $hdr{connection};
517	# }	658	# }
518		659
519	$state{handle}->starttls ("connect") if $rscheme eq "https";	660	$state{handle}->starttls ("connect") if $rscheme eq "https";
520		661
521	# handle actual, non-tunneled, request	662	# handle actual, non-tunneled, request
522	my $handle_actual_request = sub {	663	my $handle_actual_request = sub {
		664	$ae_error = 596; # request phase
		665
523	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	666	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
524		667
525	# send request	668	# send request
526	$state{handle}->push_write (	669	$state{handle}->push_write (
527	"$method $rpath HTTP/1.0\015\012"	670	"$method $rpath HTTP/1.1\015\012"
528	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	671	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
529	. "\015\012"	672	. "\015\012"
530	. (delete $arg{body})	673	. (delete $arg{body})
531	);	674	);
532		675
533	# return if error occured during push_write()	676	# return if error occured during push_write()
534	return unless %state;	677	return unless %state;
535		678
536	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use	679	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
537		680
538	# status line and headers	681	# status line and headers
539	$state{handle}->push_read (line => $qr_nlnl, sub {	682	$state{read_response} = sub {
540	for ("$_[1]") {	683	for ("$_[1]") {
541	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	684	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
542		685
543	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc	686	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
544	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo }));	687	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
545		688
		689	# 100 Continue handling
		690	# should not happen as we don't send expect: 100-continue,
		691	# but we handle it just in case.
		692	# since we send the request body regardless, if we get an error
		693	# we are out of-sync, which we currently do NOT handle correctly.
		694	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		695	if $2 eq 100;
		696
546	push @pseudo,	697	push @pseudo,
547	HTTPVersion => $1,	698	HTTPVersion => $1,
548	Status => $2,	699	Status => $2,
549	Reason => $3,	700	Reason => $3,
550	;	701	;
551		702
552	# things seen, not parsed:	703	my $hdr = parse_hdr
553	# p3pP="NON CUR OTPi OUR NOR UNI"
554
555	$hdr{lc $1} .= ",$2"
556	while /\G
557	([^:\000-\037]*):
558	[\011\040]*
559	((?: [^\012]+ \| \012[\011\040] )*)
560	\012
561	/gxc;
562
563	/\G$/
564	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));	704	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		705
		706	%hdr = (%$hdr, @pseudo);
		707	}
		708
		709	# redirect handling
		710	# microsoft and other shitheads don't give a shit for following standards,
		711	# try to support some common forms of broken Location headers.
		712	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		713	$hdr{location} =~ s/^\.\/+//;
		714
		715	my $url = "$rscheme://$uhost:$uport";
		716
		717	unless ($hdr{location} =~ s/^\///) {
		718	$url .= $upath;
		719	$url =~ s/\/[^\/]*$//;
565	}	720	}
566		721
567	# remove the "," prefix we added to all headers above	722	$hdr{location} = "$url/$hdr{location}";
568	substr $_, 0, 1, ""	723	}
569	for values %hdr;
570		724
571	# patch in all pseudo headers	725	my $redirect;
572	%hdr = (%hdr, @pseudo);
573		726
		727	if ($recurse) {
		728	my $status = $hdr{Status};
		729
		730	# industry standard is to redirect POST as GET for
		731	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		732	# also, the UA should ask the user for 301 and 307 and POST,
		733	# industry standard seems to be to simply follow.
		734	# we go with the industry standard.
		735	if ($status == 301 or $status == 302 or $status == 303) {
		736	# HTTP/1.1 is unclear on how to mutate the method
		737	$method = "GET" unless $method eq "HEAD";
574	# redirect handling	738	$redirect = 1;
575	# microsoft and other shitheads don't give a shit for following standards,	739	} elsif ($status == 307) {
576	# try to support some common forms of broken Location headers.	740	$redirect = 1;
577	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	741	}
578	$hdr{location} =~ s/^\.\/+//;	742	}
579		743
580	my $url = "$rscheme://$uhost:$uport";	744	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		745	my $may_keep_alive = $_[3];
581		746
582	unless ($hdr{location} =~ s/^\///) {	747	$state{handle}->destroy if $state{handle};
		748	%state = ();
		749
		750	if (defined $_[1]) {
		751	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		752	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		753	}
		754
		755	# set-cookie processing
		756	if ($arg{cookie_jar}) {
		757	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
		758	}
		759
		760	if ($redirect && exists $hdr{location}) {
		761	# we ignore any errors, as it is very common to receive
		762	# Content-Length != 0 but no actual body
		763	# we also access %hdr, as $_[1] might be an erro
		764	http_request (
		765	$method => $hdr{location},
		766	%arg,
		767	recurse => $recurse - 1,
		768	Redirect => [$_[0], \%hdr],
		769	$cb);
		770	} else {
		771	$cb->($_[0], \%hdr);
		772	}
		773	};
		774
		775	$ae_error = 597; # body phase
		776
		777	my $len = $hdr{"content-length"};
		778
		779	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		780	$finish->(undef, 598 => "Request cancelled by on_header");
		781	} elsif (
		782	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		783	or $method eq "HEAD"
		784	or (defined $len && !$len)
		785	) {
		786	# no body
		787	$finish->("", undef, undef, 1);
		788	} else {
		789	# body handling, many different code paths
		790	# - no body expected
		791	# - want_body_handle
		792	# - te chunked
		793	# - 2x length known (with or without on_body)
		794	# - 2x length not known (with or without on_body)
		795	if (!$redirect && $arg{want_body_handle}) {
		796	$_[0]->on_eof (undef);
		797	$_[0]->on_error (undef);
		798	$_[0]->on_read (undef);
		799
		800	$finish->(delete $state{handle});
		801
		802	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		803	my $cl = 0;
		804	my $body = undef;
		805	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		806
		807	my $read_chunk; $read_chunk = sub {
		808	$_[1] =~ /^([0-9a-fA-F]+)/
		809	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		810
		811	my $len = hex $1;
		812
		813	if ($len) {
583	$url .= $upath;	814	$cl += $len;
584	$url =~ s/\/[^\/]*$//;	815
		816	$_[0]->push_read (chunk => $len, sub {
		817	$on_body->($_[1], \%hdr)
		818	or return $finish->(undef, 598 => "Request cancelled by on_body");
		819
		820	$_[0]->push_read (line => sub {
		821	length $_[1]
		822	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		823	$_[0]->push_read (line => $read_chunk);
		824	});
		825	});
		826	} else {
		827	$hdr{"content-length"} \|\|= $cl;
		828
		829	$_[0]->push_read (line => $qr_nlnl, sub {
		830	if (length $_[1]) {
		831	for ("$_[1]") {
		832	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		833
		834	my $hdr = parse_hdr
		835	or return $finish->(undef, $ae_error => "Garbled response trailers");
		836
		837	%hdr = (%hdr, %$hdr);
		838	}
		839	}
		840
		841	$finish->($body, undef, undef, 1);
		842	});
		843	}
		844	};
		845
		846	$_[0]->push_read (line => $read_chunk);
		847
		848	} elsif ($arg{on_body}) {
		849	if ($len) {
		850	$_[0]->on_read (sub {
		851	$len -= length $_[0]{rbuf};
		852
		853	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		854	or return $finish->(undef, 598 => "Request cancelled by on_body");
		855
		856	$len > 0
		857	or $finish->("", undef, undef, 1);
		858	});
		859	} else {
		860	$_[0]->on_eof (sub {
		861	$finish->("");
		862	});
		863	$_[0]->on_read (sub {
		864	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		865	or $finish->(undef, 598 => "Request cancelled by on_body");
		866	});
585	}	867	}
586
587	$hdr{location} = "$url/$hdr{location}";
588	}	868	} else {
		869	$_[0]->on_eof (undef);
589		870
590	my $redirect;
591
592	if ($recurse) {	871	if ($len) {
593	my $status = $hdr{Status};	872	$_[0]->on_read (sub {
594		873	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
595	# industry standard is to redirect POST as GET for	874	if $len <= length $_[0]{rbuf};
596	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
597	# also, the UA should ask the user for 301 and 307 and POST,
598	# industry standard seems to be to simply follow.
599	# we go with the industry standard.
600	if ($status == 301 or $status == 302 or $status == 303) {
601	# HTTP/1.1 is unclear on how to mutate the method
602	$method = "GET" unless $method eq "HEAD";
603	$redirect = 1;	875	});
604	} elsif ($status == 307) {	876	} else {
		877	$_[0]->on_error (sub {
		878	($! == Errno::EPIPE \|\| !$!)
		879	? $finish->(delete $_[0]{rbuf})
		880	: $finish->(undef, $ae_error => $_[2]);
605	$redirect = 1;	881	});
		882	$_[0]->on_read (sub { });
606	}	883	}
607	}	884	}
608
609	my $finish = sub {
610	$state{handle}->destroy if $state{handle};
611	%state = ();
612
613	# set-cookie processing
614	if ($arg{cookie_jar}) {
615	for ($_[1]{"set-cookie"}) {
616	# parse NAME=VALUE
617	my @kv;
618
619	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
620	my $name = $1;
621	my $value = $3;
622
623	unless ($value) {
624	$value = $2;
625	$value =~ s/\\(.)/$1/gs;
626	}
627
628	push @kv, $name => $value;
629
630	last unless /\G\s*;/gc;
631	}
632
633	last unless @kv;
634
635	my $name = shift @kv;
636	my %kv = (value => shift @kv, @kv);
637
638	my $cdom;
639	my $cpath = (delete $kv{path}) \|\| "/";
640
641	if (exists $kv{domain}) {
642	$cdom = delete $kv{domain};
643
644	$cdom =~ s/^\.?/./; # make sure it starts with a "."
645
646	next if $cdom =~ /\.$/;
647
648	# this is not rfc-like and not netscape-like. go figure.
649	my $ndots = $cdom =~ y/.//;
650	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
651	} else {
652	$cdom = $uhost;
653	}
654
655	# store it
656	$arg{cookie_jar}{version} = 1;
657	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
658
659	redo if /\G\s*,/gc;
660	}
661	}
662
663	if ($redirect && exists $hdr{location}) {
664	# we ignore any errors, as it is very common to receive
665	# Content-Length != 0 but no actual body
666	# we also access %hdr, as $_[1] might be an erro
667	http_request (
668	$method => $hdr{location},
669	%arg,
670	recurse => $recurse - 1,
671	Redirect => \@_,
672	$cb);
673	} else {
674	$cb->($_[0], $_[1]);
675	}
676	};
677
678	my $len = $hdr{"content-length"};
679
680	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
681	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
682	} elsif (
683	$hdr{Status} =~ /^(?:1..\|[23]04)$/
684	or $method eq "HEAD"
685	or (defined $len && !$len)
686	) {
687	# no body
688	$finish->("", \%hdr);
689	} else {
690	# body handling, four different code paths
691	# for want_body_handle, on_body (2x), normal (2x)
692	# we might read too much here, but it does not matter yet (no pers. connections)
693	if (!$redirect && $arg{want_body_handle}) {
694	$_[0]->on_eof (undef);
695	$_[0]->on_error (undef);
696	$_[0]->on_read (undef);
697
698	$finish->(delete $state{handle}, \%hdr);
699
700	} elsif ($arg{on_body}) {
701	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
702	if ($len) {
703	$_[0]->on_eof (undef);
704	$_[0]->on_read (sub {
705	$len -= length $_[0]{rbuf};
706
707	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
708	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
709
710	$len > 0
711	or $finish->("", \%hdr);
712	});
713	} else {
714	$_[0]->on_eof (sub {
715	$finish->("", \%hdr);
716	});
717	$_[0]->on_read (sub {
718	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
719	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
720	});
721	}
722	} else {
723	$_[0]->on_eof (undef);
724
725	if ($len) {
726	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
727	$_[0]->on_read (sub {
728	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
729	if $len <= length $_[0]{rbuf};
730	});
731	} else {
732	$_[0]->on_error (sub {
733	($! == Errno::EPIPE \|\| !$!)
734	? $finish->(delete $_[0]{rbuf}, \%hdr)
735	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });
736	});
737	$_[0]->on_read (sub { });
738	}
739	}
740	}
741	});	885	}
742	};	886	};
743		887
		888	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		889	};
		890
744	# now handle proxy-CONNECT method	891	# now handle proxy-CONNECT method
745	if ($proxy && $uscheme eq "https") {	892	if ($proxy && $uscheme eq "https") {
746	# oh dear, we have to wrap it into a connect request	893	# oh dear, we have to wrap it into a connect request
747		894
748	# maybe re-use $uauthority with patched port?	895	# maybe re-use $uauthority with patched port?
749	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	896	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
750	$state{handle}->push_read (line => $qr_nlnl, sub {	897	$state{handle}->push_read (line => $qr_nlnl, sub {
751	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	898	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
752	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo }));	899	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
753		900
754	if ($2 == 200) {	901	if ($2 == 200) {
755	$rpath = $upath;	902	$rpath = $upath;
756	&$handle_actual_request;	903	&$handle_actual_request;
757	} else {	904	} else {
758	%state = ();	905	%state = ();
759	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	906	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
760	}
761	});	907	}
		908	});
762	} else {	909	} else {
763	&$handle_actual_request;	910	&$handle_actual_request;
764	}
765
766	},	911	}
767	$arg{on_prepare} \|\| sub { $timeout }
768	);	912	};
		913
		914	my $tcp_connect = $arg{tcp_connect}
		915	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		916
		917	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		918
769	};	919	};
770		920
771	defined wantarray && AnyEvent::Util::guard { %state = () }	921	defined wantarray && AnyEvent::Util::guard { %state = () }
772	}	922	}
773		923
…		…
815	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP	965	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
816	Date (RFC 2616).	966	Date (RFC 2616).
817		967
818	=item $timestamp = AnyEvent::HTTP::parse_date $date	968	=item $timestamp = AnyEvent::HTTP::parse_date $date
819		969
820	Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX	970	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		971	bunch of minor variations of those, and returns the corresponding POSIX
821	timestamp, or C<undef> if the date cannot be parsed.	972	timestamp, or C<undef> if the date cannot be parsed.
822		973
823	=item $AnyEvent::HTTP::MAX_RECURSE	974	=item $AnyEvent::HTTP::MAX_RECURSE
824		975
825	The default value for the C<recurse> request parameter (default: C<10>).	976	The default value for the C<recurse> request parameter (default: C<10>).
…		…
865	sub parse_date($) {	1016	sub parse_date($) {
866	my ($date) = @_;	1017	my ($date) = @_;
867		1018
868	my ($d, $m, $y, $H, $M, $S);	1019	my ($d, $m, $y, $H, $M, $S);
869		1020
870	if ($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$/) {	1021	if ($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$/) {
871	# RFC 822/1123, required by RFC 2616	1022	# RFC 822/1123, required by RFC 2616 (with " ")
		1023	# cookie dates (with "-")
		1024
872	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);	1025	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
873		1026
874	} elsif ($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$/) {	1027	} elsif ($date =~ /^[A-Z][a-z][a-z]+, ([0-9][0-9]?)-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) GMT$/) {
875	# RFC 850	1028	# RFC 850
876	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);	1029	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
877		1030
878	} elsif ($date =~ /^[A-Z][a-z][a-z] ([A-Z][a-z][a-z]) ([0-9 ][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) ([0-9][0-9][0-9][0-9])$/) {	1031	} elsif ($date =~ /^[A-Z][a-z][a-z]+ ([A-Z][a-z][a-z]) ([0-9 ]?[0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) ([0-9][0-9][0-9][0-9])$/) {
879	# ISO C's asctime	1032	# ISO C's asctime
880	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);	1033	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
881	}	1034	}
882	# other formats fail in the loop below	1035	# other formats fail in the loop below
883		1036

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.62 by root, Thu Dec 30 04:30:24 2010 UTC vs. Revision 1.79 by root, Sat Jan 1 20:01:07 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.62 by root, Thu Dec 30 04:30:24 2010 UTC vs.
Revision 1.79 by root, Sat Jan 1 20:01:07 2011 UTC