[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 1.77 by root, Sat Jan 1 19:13:41 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<< $headers->{Status} >> will be
125	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
126	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receive or processing.
		138
		139	=item 598 - user aborted request in C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
127		144
128	A typical callback might look like this:	145	A typical callback might look like this:
129		146
130	sub {	147	sub {
131	my ($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	while (
		439	m{
		440	\G\s*
		441	(?:
		442	expires \s=\s ([A-Z][a-z][a-z],\ [^,;]+)
		443	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		444	)
		445	}gcxsi
		446	) {
		447	my $name = $2;
		448	my $value = $4;
		449
		450	unless (defined $name) {
		451	# expires
		452	$name = "expires";
		453	$value = $1;
		454	} elsif (!defined $value) {
		455	# quoted
		456	$value = $3;
		457	$value =~ s/\\(.)/$1/gs;
		458	}
		459
		460	push @kv, lc $name, $value;
		461
		462	last unless /\G\s*;/gc;
		463	}
		464
		465	last unless @kv;
		466
		467	my $name = shift @kv;
		468	my %kv = (value => shift @kv, @kv);
		469
		470	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		471	if exists $kv{"max-age"};
		472
		473	my $cdom;
		474	my $cpath = (delete $kv{path}) \|\| "/";
		475
		476	if (exists $kv{domain}) {
		477	$cdom = delete $kv{domain};
		478
		479	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		480
		481	next if $cdom =~ /\.$/;
		482
		483	# this is not rfc-like and not netscape-like. go figure.
		484	my $ndots = $cdom =~ y/.//;
		485	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		486	} else {
		487	$cdom = $uhost;
		488	}
		489
		490	# store it
		491	$jar->{version} = 1;
		492	$jar->{$cdom}{$cpath}{$name} = \%kv;
		493
		494	redo if /\G\s*,/gc;
		495	}
		496	}
		497
		498	# continue to parse $_ for headers and place them into the arg
		499	sub parse_hdr() {
		500	my %hdr;
		501
		502	# things seen, not parsed:
		503	# p3pP="NON CUR OTPi OUR NOR UNI"
		504
		505	$hdr{lc $1} .= ",$2"
		506	while /\G
		507	([^:\000-\037]*):
		508	[\011\040]*
		509	((?: [^\012]+ \| \012[\011\040] )*)
		510	\012
		511	/gxc;
		512
		513	/\G$/
		514	or return;
		515
		516	# remove the "," prefix we added to all headers above
		517	substr $_, 0, 1, ""
		518	for values %hdr;
		519
		520	\%hdr
		521	}
		522
356	our $qr_nlnl = qr{(?<![^\012])\015?\012};	523	our $qr_nlnl = qr{(?<![^\012])\015?\012};
357		524
358	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	525	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
359	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	526	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
360		527
…		…
379	my @pseudo = (URL => $url);	546	my @pseudo = (URL => $url);
380	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	547	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
381		548
382	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	549	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
383		550
384	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	551	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
385	if $recurse < 0;	552	if $recurse < 0;
386		553
387	my $proxy = $arg{proxy} \|\| $PROXY;	554	my $proxy = $arg{proxy} \|\| $PROXY;
388	my $timeout = $arg{timeout} \|\| $TIMEOUT;	555	my $timeout = $arg{timeout} \|\| $TIMEOUT;
389		556
…		…
392		559
393	$uscheme = lc $uscheme;	560	$uscheme = lc $uscheme;
394		561
395	my $uport = $uscheme eq "http" ? 80	562	my $uport = $uscheme eq "http" ? 80
396	: $uscheme eq "https" ? 443	563	: $uscheme eq "https" ? 443
397	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });	564	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
398		565
399	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	566	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
400	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	567	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
401		568
402	my $uhost = $1;	569	my $uhost = $1;
403	$uport = $2 if defined $2;	570	$uport = $2 if defined $2;
404		571
405	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	572	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
…		…
410		577
411	$upath =~ s%^/?%/%;	578	$upath =~ s%^/?%/%;
412		579
413	# cookie processing	580	# cookie processing
414	if (my $jar = $arg{cookie_jar}) {	581	if (my $jar = $arg{cookie_jar}) {
415	%$jar = () if $jar->{version} != 1;	582	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
416		583
417	my @cookie;
418
419	while (my ($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	584	$hdr{cookie} = join "; ", @$cookies
441	if @cookie;	585	if @$cookies;
442	}	586	}
443		587
444	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	588	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
445		589
446	if ($proxy) {	590	if ($proxy) {
…		…
454	} else {	598	} else {
455	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	599	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
456	}	600	}
457		601
458	# leave out fragment and query string, just a heuristic	602	# leave out fragment and query string, just a heuristic
459	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	603	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
460	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	604	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
461		605
462	$hdr{"content-length"} = length $arg{body}	606	$hdr{"content-length"} = length $arg{body}
463	if length $arg{body} \|\| $method ne "GET";	607	if length $arg{body} \|\| $method ne "GET";
464		608
		609	$hdr{connection} = "close TE"; #1.1
		610	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		611
465	my %state = (connect_guard => 1);	612	my %state = (connect_guard => 1);
466		613
467	_get_slot $uhost, sub {	614	_get_slot $uhost, sub {
468	$state{slot_guard} = shift;	615	$state{slot_guard} = shift;
469		616
470	return unless $state{connect_guard};	617	return unless $state{connect_guard};
471		618
472	my $tcp_connect = $arg{tcp_connect}	619	my $ae_error = 595; # connecting
473	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
474		620
475	$state{connect_guard} = $tcp_connect->(	621	my $connect_cb = sub {
476	$rhost,
477	$rport,
478	sub {
479	$state{fh} = shift	622	$state{fh} = shift
480	or do {	623	or do {
481	my $err = "$!";	624	my $err = "$!";
482	%state = ();	625	%state = ();
483	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	626	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
484	};	627	};
485		628
486	pop; # free memory, save a tree
487
488	return unless delete $state{connect_guard};	629	return unless delete $state{connect_guard};
489		630
490	# get handle	631	# get handle
491	$state{handle} = new AnyEvent::Handle	632	$state{handle} = new AnyEvent::Handle
492	fh => $state{fh},	633	fh => $state{fh},
493	peername => $rhost,	634	peername => $rhost,
494	tls_ctx => $arg{tls_ctx},	635	tls_ctx => $arg{tls_ctx},
495	# these need to be reconfigured on keepalive handles	636	# these need to be reconfigured on keepalive handles
496	timeout => $timeout,	637	timeout => $timeout,
497	on_error => sub {	638	on_error => sub {
498	%state = ();	639	%state = ();
499	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	640	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
500	},	641	},
501	on_eof => sub {	642	on_eof => sub {
502	%state = ();	643	%state = ();
503	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	644	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
504	},	645	},
505	;	646	;
506		647
507	# limit the number of persistent connections	648	# limit the number of persistent connections
508	# keepalive not yet supported	649	# keepalive not yet supported
509	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	650	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
510	# ++$KA_COUNT{$_[1]};	651	# ++$KA_COUNT{$_[1]};
511	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	652	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
512	# --$KA_COUNT{$_[1]}	653	# --$KA_COUNT{$_[1]}
513	# };	654	# };
514	# $hdr{connection} = "keep-alive";	655	# $hdr{connection} = "keep-alive";
515	# } else {
516	delete $hdr{connection};
517	# }	656	# }
518		657
519	$state{handle}->starttls ("connect") if $rscheme eq "https";	658	$state{handle}->starttls ("connect") if $rscheme eq "https";
520		659
521	# handle actual, non-tunneled, request	660	# handle actual, non-tunneled, request
522	my $handle_actual_request = sub {	661	my $handle_actual_request = sub {
		662	$ae_error = 596; # request phase
		663
523	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	664	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
524		665
525	# send request	666	# send request
526	$state{handle}->push_write (	667	$state{handle}->push_write (
527	"$method $rpath HTTP/1.0\015\012"	668	"$method $rpath HTTP/1.1\015\012"
528	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	669	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
529	. "\015\012"	670	. "\015\012"
530	. (delete $arg{body})	671	. (delete $arg{body})
531	);	672	);
532		673
533	# return if error occured during push_write()	674	# return if error occured during push_write()
534	return unless %state;	675	return unless %state;
535		676
536	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use	677	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
537		678
538	# status line and headers	679	# status line and headers
539	$state{handle}->push_read (line => $qr_nlnl, sub {	680	$state{read_response} = sub {
540	for ("$_[1]") {	681	for ("$_[1]") {
541	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	682	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
542		683
543	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc	684	/^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 }));	685	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
545		686
		687	# 100 Continue handling
		688	# should not happen as we don't send expect: 100-continue,
		689	# but we handle it just in case.
		690	# since we send the request body regardless, if we get an error
		691	# we are out of-sync, which we currently do NOT handle correctly.
		692	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		693	if $2 eq 100;
		694
546	push @pseudo,	695	push @pseudo,
547	HTTPVersion => $1,	696	HTTPVersion => $1,
548	Status => $2,	697	Status => $2,
549	Reason => $3,	698	Reason => $3,
550	;	699	;
551		700
552	# things seen, not parsed:	701	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 }));	702	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		703
		704	%hdr = (%$hdr, @pseudo);
		705	}
		706
		707	# redirect handling
		708	# microsoft and other shitheads don't give a shit for following standards,
		709	# try to support some common forms of broken Location headers.
		710	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		711	$hdr{location} =~ s/^\.\/+//;
		712
		713	my $url = "$rscheme://$uhost:$uport";
		714
		715	unless ($hdr{location} =~ s/^\///) {
		716	$url .= $upath;
		717	$url =~ s/\/[^\/]*$//;
565	}	718	}
566		719
567	# remove the "," prefix we added to all headers above	720	$hdr{location} = "$url/$hdr{location}";
568	substr $_, 0, 1, ""	721	}
569	for values %hdr;
570		722
571	# patch in all pseudo headers	723	my $redirect;
572	%hdr = (%hdr, @pseudo);
573		724
		725	if ($recurse) {
		726	my $status = $hdr{Status};
		727
		728	# industry standard is to redirect POST as GET for
		729	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		730	# also, the UA should ask the user for 301 and 307 and POST,
		731	# industry standard seems to be to simply follow.
		732	# we go with the industry standard.
		733	if ($status == 301 or $status == 302 or $status == 303) {
		734	# HTTP/1.1 is unclear on how to mutate the method
		735	$method = "GET" unless $method eq "HEAD";
574	# redirect handling	736	$redirect = 1;
575	# microsoft and other shitheads don't give a shit for following standards,	737	} elsif ($status == 307) {
576	# try to support some common forms of broken Location headers.	738	$redirect = 1;
577	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	739	}
578	$hdr{location} =~ s/^\.\/+//;	740	}
579		741
580	my $url = "$rscheme://$uhost:$uport";	742	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		743	my $may_keep_alive = $_[3];
581		744
582	unless ($hdr{location} =~ s/^\///) {	745	$state{handle}->destroy if $state{handle};
		746	%state = ();
		747
		748	if (defined $_[1]) {
		749	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		750	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		751	}
		752
		753	# set-cookie processing
		754	if ($arg{cookie_jar}) {
		755	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
		756	}
		757
		758	if ($redirect && exists $hdr{location}) {
		759	# we ignore any errors, as it is very common to receive
		760	# Content-Length != 0 but no actual body
		761	# we also access %hdr, as $_[1] might be an erro
		762	http_request (
		763	$method => $hdr{location},
		764	%arg,
		765	recurse => $recurse - 1,
		766	Redirect => [$_[0], \%hdr],
		767	$cb);
		768	} else {
		769	$cb->($_[0], \%hdr);
		770	}
		771	};
		772
		773	$ae_error = 597; # body phase
		774
		775	my $len = $hdr{"content-length"};
		776
		777	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		778	$finish->(undef, 598 => "Request cancelled by on_header");
		779	} elsif (
		780	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		781	or $method eq "HEAD"
		782	or (defined $len && !$len)
		783	) {
		784	# no body
		785	$finish->("", undef, undef, 1);
		786	} else {
		787	# body handling, many different code paths
		788	# - no body expected
		789	# - want_body_handle
		790	# - te chunked
		791	# - 2x length known (with or without on_body)
		792	# - 2x length not known (with or without on_body)
		793	if (!$redirect && $arg{want_body_handle}) {
		794	$_[0]->on_eof (undef);
		795	$_[0]->on_error (undef);
		796	$_[0]->on_read (undef);
		797
		798	$finish->(delete $state{handle});
		799
		800	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		801	my $cl = 0;
		802	my $body = undef;
		803	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		804
		805	my $read_chunk; $read_chunk = sub {
		806	$_[1] =~ /^([0-9a-fA-F]+)/
		807	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		808
		809	my $len = hex $1;
		810
		811	if ($len) {
583	$url .= $upath;	812	$cl += $len;
584	$url =~ s/\/[^\/]*$//;	813
		814	$_[0]->push_read (chunk => $len, sub {
		815	$on_body->($_[1], \%hdr)
		816	or return $finish->(undef, 598 => "Request cancelled by on_body");
		817
		818	$_[0]->push_read (line => sub {
		819	length $_[1]
		820	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		821	$_[0]->push_read (line => $read_chunk);
		822	});
		823	});
		824	} else {
		825	$hdr{"content-length"} \|\|= $cl;
		826
		827	$_[0]->push_read (line => $qr_nlnl, sub {
		828	if (length $_[1]) {
		829	for ("$_[1]") {
		830	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		831
		832	my $hdr = parse_hdr
		833	or return $finish->(undef, $ae_error => "Garbled response trailers");
		834
		835	%hdr = (%hdr, %$hdr);
		836	}
		837	}
		838
		839	$finish->($body, undef, undef, 1);
		840	});
		841	}
		842	};
		843
		844	$_[0]->push_read (line => $read_chunk);
		845
		846	} elsif ($arg{on_body}) {
		847	if ($len) {
		848	$_[0]->on_read (sub {
		849	$len -= length $_[0]{rbuf};
		850
		851	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		852	or return $finish->(undef, 598 => "Request cancelled by on_body");
		853
		854	$len > 0
		855	or $finish->("", undef, undef, 1);
		856	});
		857	} else {
		858	$_[0]->on_eof (sub {
		859	$finish->("");
		860	});
		861	$_[0]->on_read (sub {
		862	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		863	or $finish->(undef, 598 => "Request cancelled by on_body");
		864	});
585	}	865	}
586
587	$hdr{location} = "$url/$hdr{location}";
588	}	866	} else {
		867	$_[0]->on_eof (undef);
589		868
590	my $redirect;
591
592	if ($recurse) {	869	if ($len) {
593	my $status = $hdr{Status};	870	$_[0]->on_read (sub {
594		871	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
595	# industry standard is to redirect POST as GET for	872	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	$redirect = 1;	873	});
604	} elsif ($status == 307) {	874	} else {
		875	$_[0]->on_error (sub {
		876	($! == Errno::EPIPE \|\| !$!)
		877	? $finish->(delete $_[0]{rbuf})
		878	: $finish->(undef, $ae_error => $_[2]);
605	$redirect = 1;	879	});
		880	$_[0]->on_read (sub { });
606	}	881	}
607	}	882	}
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	});	883	}
742	};	884	};
743		885
		886	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		887	};
		888
744	# now handle proxy-CONNECT method	889	# now handle proxy-CONNECT method
745	if ($proxy && $uscheme eq "https") {	890	if ($proxy && $uscheme eq "https") {
746	# oh dear, we have to wrap it into a connect request	891	# oh dear, we have to wrap it into a connect request
747		892
748	# maybe re-use $uauthority with patched port?	893	# 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");	894	$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 {	895	$state{handle}->push_read (line => $qr_nlnl, sub {
751	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	896	$_[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 }));	897	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
753		898
754	if ($2 == 200) {	899	if ($2 == 200) {
755	$rpath = $upath;	900	$rpath = $upath;
756	&$handle_actual_request;	901	&$handle_actual_request;
757	} else {	902	} else {
758	%state = ();	903	%state = ();
759	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	904	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
760	}
761	});	905	}
		906	});
762	} else {	907	} else {
763	&$handle_actual_request;	908	&$handle_actual_request;
764	}
765
766	},	909	}
767	$arg{on_prepare} \|\| sub { $timeout }
768	);	910	};
		911
		912	my $tcp_connect = $arg{tcp_connect}
		913	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		914
		915	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		916
769	};	917	};
770		918
771	defined wantarray && AnyEvent::Util::guard { %state = () }	919	defined wantarray && AnyEvent::Util::guard { %state = () }
772	}	920	}
773		921
…		…
815	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP	963	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
816	Date (RFC 2616).	964	Date (RFC 2616).
817		965
818	=item $timestamp = AnyEvent::HTTP::parse_date $date	966	=item $timestamp = AnyEvent::HTTP::parse_date $date
819		967
820	Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX	968	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and
821	timestamp, or C<undef> if the date cannot be parsed.	969	returns the corresponding POSIX timestamp, or C<undef> if the date cannot
		970	be parsed.
822		971
823	=item $AnyEvent::HTTP::MAX_RECURSE	972	=item $AnyEvent::HTTP::MAX_RECURSE
824		973
825	The default value for the C<recurse> request parameter (default: C<10>).	974	The default value for the C<recurse> request parameter (default: C<10>).
826		975
…		…
865	sub parse_date($) {	1014	sub parse_date($) {
866	my ($date) = @_;	1015	my ($date) = @_;
867		1016
868	my ($d, $m, $y, $H, $M, $S);	1017	my ($d, $m, $y, $H, $M, $S);
869		1018
870	if ($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$/) {	1019	if ($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$/) {
871	# RFC 822/1123, required by RFC 2616	1020	# RFC 822/1123, required by RFC 2616 (with " ")
		1021	# cookie dates (with "-")
		1022
872	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);	1023	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
873		1024
874	} elsif ($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$/) {	1025	} elsif ($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$/) {
875	# RFC 850	1026	# RFC 850
876	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);	1027	($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 1.62 by root, Thu Dec 30 04:30:24 2010 UTC vs. Revision 1.77 by root, Sat Jan 1 19:13:41 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 1.77 by root, Sat Jan 1 19:13:41 2011 UTC