[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 1.78 by root, Sat Jan 1 19:32:41 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<< $headers->{Status} >> will be
125	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
126	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receiving or processing.
		138
		139	=item 598 - user aborted request via C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
127		144
128	A typical callback might look like this:	145	A typical callback might look like this:
129		146
130	sub {	147	sub {
131	my ($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. Currently, C<http_request> may provide its	169	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	170	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	171	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	172	(this can be suppressed by using C<undef> for these headers in which case
156	sent at all).	173	they won't be sent at all).
157		174
158	=item timeout => $seconds	175	=item timeout => $seconds
159		176
160	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
161	the timeout, as will read or write activity, i.e. this is not an overall	178	the timeout, as will read or write activity, i.e. this is not an overall
…		…
171	C<$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
172	HTTPS.	189	HTTPS.
173		190
174	=item body => $string	191	=item body => $string
175		192
176	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
177	this module might offer more options).	194	this module might offer more options).
178		195
179	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
180		197
181	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
182	based on the original netscape specification.	199	based on the original netscape specification.
183		200
184	The C<$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
185	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
186	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
187	recommended, as expiry times are currently being ignored.	204	recommended, as session-only cookies might survive longer than expected.
188		205
189	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
190	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
191	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
192	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
193	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.
194		215
195	=item tls_ctx => $scheme \| $tls_ctx	216	=item tls_ctx => $scheme \| $tls_ctx
196		217
197	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
198	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
…		…
237		258
238	This callback is useful, among other things, to quickly reject unwanted	259	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	260	content, which, if it is supposed to be rare, can be faster than first
240	doing a C<HEAD> request.	261	doing a C<HEAD> request.
241		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
242	Example: cancel the request unless the content-type is "text/html".	267	Example: cancel the request unless the content-type is "text/html".
243		268
244	on_header => sub {	269	on_header => sub {
245	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	270	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
246	},	271	},
…		…
252	string instead of the body data.	277	string instead of the body data.
253		278
254	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),
255	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
256	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.
257		285
258	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
259	(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
260	be extracted, or when the body should be processed incrementally.	288	be extracted, or when the body should be processed incrementally.
261		289
…		…
287	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
288	that doesn't solve your problem in a better way.	316	that doesn't solve your problem in a better way.
289		317
290	=back	318	=back
291		319
292	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.
293		322
294	http_request GET => "http://www.nethype.de/", sub {	323	http_request GET => "http://www.nethype.de/", sub {
295	my ($body, $hdr) = @_;	324	my ($body, $hdr) = @_;
296	print "$body\n";	325	print "$body\n";
297	};	326	};
298		327
299	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
300	timeout of 30 seconds.	329	timeout of 30 seconds.
301		330
302	http_request	331	http_request
303	GET => "https://www.google.com",	332	GET => "https://www.google.com",
304	timeout => 30,	333	timeout => 30,
…		…
307	use Data::Dumper;	336	use Data::Dumper;
308	print Dumper $hdr;	337	print Dumper $hdr;
309	}	338	}
310	;	339	;
311		340
312	Example: make another simple HTTP GET request, but immediately try to	341	Example: do another simple HTTP GET request, but immediately try to
313	cancel it.	342	cancel it.
314		343
315	my $request = http_request GET => "http://www.nethype.de/", sub {	344	my $request = http_request GET => "http://www.nethype.de/", sub {
316	my ($body, $hdr) = @_;	345	my ($body, $hdr) = @_;
317	print "$body\n";	346	print "$body\n";
…		…
349	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	378	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
350		379
351	_slot_schedule $_[0];	380	_slot_schedule $_[0];
352	}	381	}
353		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
354	our $qr_nlnl = qr{(?<![^\012])\015?\012};	523	our $qr_nlnl = qr{(?<![^\012])\015?\012};
355		524
356	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	525	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
357	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	526	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
358		527
…		…
377	my @pseudo = (URL => $url);	546	my @pseudo = (URL => $url);
378	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	547	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
379		548
380	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	549	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
381		550
382	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	551	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
383	if $recurse < 0;	552	if $recurse < 0;
384		553
385	my $proxy = $arg{proxy} \|\| $PROXY;	554	my $proxy = $arg{proxy} \|\| $PROXY;
386	my $timeout = $arg{timeout} \|\| $TIMEOUT;	555	my $timeout = $arg{timeout} \|\| $TIMEOUT;
387		556
…		…
390		559
391	$uscheme = lc $uscheme;	560	$uscheme = lc $uscheme;
392		561
393	my $uport = $uscheme eq "http" ? 80	562	my $uport = $uscheme eq "http" ? 80
394	: $uscheme eq "https" ? 443	563	: $uscheme eq "https" ? 443
395	: 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" });
396		565
397	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	566	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
398	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	567	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
399		568
400	my $uhost = $1;	569	my $uhost = $1;
401	$uport = $2 if defined $2;	570	$uport = $2 if defined $2;
402		571
403	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	572	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
…		…
408		577
409	$upath =~ s%^/?%/%;	578	$upath =~ s%^/?%/%;
410		579
411	# cookie processing	580	# cookie processing
412	if (my $jar = $arg{cookie_jar}) {	581	if (my $jar = $arg{cookie_jar}) {
413	%$jar = () if $jar->{version} != 1;	582	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
414		583
415	my @cookie;
416
417	while (my ($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	584	$hdr{cookie} = join "; ", @$cookies
439	if @cookie;	585	if @$cookies;
440	}	586	}
441		587
442	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	588	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
443		589
444	if ($proxy) {	590	if ($proxy) {
…		…
452	} else {	598	} else {
453	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	599	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
454	}	600	}
455		601
456	# leave out fragment and query string, just a heuristic	602	# leave out fragment and query string, just a heuristic
457	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	603	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
458	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	604	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
459		605
460	$hdr{"content-length"} = length $arg{body}	606	$hdr{"content-length"} = length $arg{body}
461	if length $arg{body} \|\| $method ne "GET";	607	if length $arg{body} \|\| $method ne "GET";
462		608
		609	$hdr{connection} = "close TE"; #1.1
		610	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		611
463	my %state = (connect_guard => 1);	612	my %state = (connect_guard => 1);
464		613
465	_get_slot $uhost, sub {	614	_get_slot $uhost, sub {
466	$state{slot_guard} = shift;	615	$state{slot_guard} = shift;
467		616
468	return unless $state{connect_guard};	617	return unless $state{connect_guard};
469		618
470	my $tcp_connect = $arg{tcp_connect}	619	my $ae_error = 595; # connecting
471	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
472		620
473	$state{connect_guard} = $tcp_connect->(	621	my $connect_cb = sub {
474	$rhost,
475	$rport,
476	sub {
477	$state{fh} = shift	622	$state{fh} = shift
478	or do {	623	or do {
479	my $err = "$!";	624	my $err = "$!";
480	%state = ();	625	%state = ();
481	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	626	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
482	};	627	};
483		628
484	pop; # free memory, save a tree
485
486	return unless delete $state{connect_guard};	629	return unless delete $state{connect_guard};
487		630
488	# get handle	631	# get handle
489	$state{handle} = new AnyEvent::Handle	632	$state{handle} = new AnyEvent::Handle
490	fh => $state{fh},	633	fh => $state{fh},
491	peername => $rhost,	634	peername => $rhost,
492	tls_ctx => $arg{tls_ctx},	635	tls_ctx => $arg{tls_ctx},
493	# these need to be reconfigured on keepalive handles	636	# these need to be reconfigured on keepalive handles
494	timeout => $timeout,	637	timeout => $timeout,
495	on_error => sub {	638	on_error => sub {
496	%state = ();	639	%state = ();
497	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	640	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
498	},	641	},
499	on_eof => sub {	642	on_eof => sub {
500	%state = ();	643	%state = ();
501	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	644	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
502	},	645	},
503	;	646	;
504		647
505	# limit the number of persistent connections	648	# limit the number of persistent connections
506	# keepalive not yet supported	649	# keepalive not yet supported
507	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	650	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
508	# ++$KA_COUNT{$_[1]};	651	# ++$KA_COUNT{$_[1]};
509	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	652	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
510	# --$KA_COUNT{$_[1]}	653	# --$KA_COUNT{$_[1]}
511	# };	654	# };
512	# $hdr{connection} = "keep-alive";	655	# $hdr{connection} = "keep-alive";
513	# } else {
514	delete $hdr{connection};
515	# }	656	# }
516		657
517	$state{handle}->starttls ("connect") if $rscheme eq "https";	658	$state{handle}->starttls ("connect") if $rscheme eq "https";
518		659
519	# handle actual, non-tunneled, request	660	# handle actual, non-tunneled, request
520	my $handle_actual_request = sub {	661	my $handle_actual_request = sub {
		662	$ae_error = 596; # request phase
		663
521	$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};
522		665
523	# send request	666	# send request
524	$state{handle}->push_write (	667	$state{handle}->push_write (
525	"$method $rpath HTTP/1.0\015\012"	668	"$method $rpath HTTP/1.1\015\012"
526	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	669	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
527	. "\015\012"	670	. "\015\012"
528	. (delete $arg{body})	671	. (delete $arg{body})
529	);	672	);
530		673
531	# return if error occured during push_write()	674	# return if error occured during push_write()
532	return unless %state;	675	return unless %state;
533		676
534	%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
535		678
536	# status line and headers	679	# status line and headers
537	$state{handle}->push_read (line => $qr_nlnl, sub {	680	$state{read_response} = sub {
538	for ("$_[1]") {	681	for ("$_[1]") {
539	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.
540		683
541	/^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
542	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" }));
543		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
544	push @pseudo,	695	push @pseudo,
545	HTTPVersion => $1,	696	HTTPVersion => $1,
546	Status => $2,	697	Status => $2,
547	Reason => $3,	698	Reason => $3,
548	;	699	;
549		700
550	# things seen, not parsed:	701	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 }));	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	$url =~ s/\/[^\/]*$//;
563	}	718	}
564		719
565	# remove the "," prefix we added to all headers above	720	$hdr{location} = "$url/$hdr{location}";
566	substr $_, 0, 1, ""	721	}
567	for values %hdr;
568		722
569	# patch in all pseudo headers	723	my $redirect;
570	%hdr = (%hdr, @pseudo);
571		724
		725	if ($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";
572	# redirect handling	736	$redirect = 1;
573	# microsoft and other shitheads don't give a shit for following standards,	737	} elsif ($status == 307) {
574	# try to support some common forms of broken Location headers.	738	$redirect = 1;
575	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	739	}
576	$hdr{location} =~ s/^\.\/+//;	740	}
577		741
578	my $url = "$rscheme://$uhost:$uport";	742	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		743	my $may_keep_alive = $_[3];
579		744
580	unless ($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) {
581	$url .= $upath;	812	$cl += $len;
582	$url =~ s/\/[^\/]*$//;	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	});
583	}	865	}
584
585	$hdr{location} = "$url/$hdr{location}";
586	}	866	} else {
		867	$_[0]->on_eof (undef);
587		868
588	my $redirect;
589
590	if ($recurse) {	869	if ($len) {
591	my $status = $hdr{Status};	870	$_[0]->on_read (sub {
592		871	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
593	# industry standard is to redirect POST as GET for	872	if $len <= length $_[0]{rbuf};
594	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
595	# also, the UA should ask the user for 301 and 307 and POST,
596	# industry standard seems to be to simply follow.
597	# we go with the industry standard.
598	if ($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	$redirect = 1;	873	});
602	} elsif ($status == 307) {	874	} else {
		875	$_[0]->on_error (sub {
		876	($! == Errno::EPIPE \|\| !$!)
		877	? $finish->(delete $_[0]{rbuf})
		878	: $finish->(undef, $ae_error => $_[2]);
603	$redirect = 1;	879	});
		880	$_[0]->on_read (sub { });
604	}	881	}
605	}	882	}
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	});	883	}
740	};	884	};
741		885
		886	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		887	};
		888
742	# now handle proxy-CONNECT method	889	# now handle proxy-CONNECT method
743	if ($proxy && $uscheme eq "https") {	890	if ($proxy && $uscheme eq "https") {
744	# oh dear, we have to wrap it into a connect request	891	# oh dear, we have to wrap it into a connect request
745		892
746	# maybe re-use $uauthority with patched port?	893	# 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");	894	$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 {	895	$state{handle}->push_read (line => $qr_nlnl, sub {
749	$_[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
750	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])" }));
751		898
752	if ($2 == 200) {	899	if ($2 == 200) {
753	$rpath = $upath;	900	$rpath = $upath;
754	&$handle_actual_request;	901	&$handle_actual_request;
755	} else {	902	} else {
756	%state = ();	903	%state = ();
757	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	904	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
758	}
759	});	905	}
		906	});
760	} else {	907	} else {
761	&$handle_actual_request;	908	&$handle_actual_request;
762	}
763
764	},	909	}
765	$arg{on_prepare} \|\| sub { $timeout }
766	);	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
767	};	917	};
768		918
769	defined wantarray && AnyEvent::Util::guard { %state = () }	919	defined wantarray && AnyEvent::Util::guard { %state = () }
770	}	920	}
771		921
…		…
813	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
814	Date (RFC 2616).	964	Date (RFC 2616).
815		965
816	=item $timestamp = AnyEvent::HTTP::parse_date $date	966	=item $timestamp = AnyEvent::HTTP::parse_date $date
817		967
818	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
819	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.
820		971
821	=item $AnyEvent::HTTP::MAX_RECURSE	972	=item $AnyEvent::HTTP::MAX_RECURSE
822		973
823	The default value for the C<recurse> request parameter (default: C<10>).	974	The default value for the C<recurse> request parameter (default: C<10>).
824		975
…		…
863	sub parse_date($) {	1014	sub parse_date($) {
864	my ($date) = @_;	1015	my ($date) = @_;
865		1016
866	my ($d, $m, $y, $H, $M, $S);	1017	my ($d, $m, $y, $H, $M, $S);
867		1018
868	if ($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$/) {	1019	if ($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$/) {
869	# RFC 822/1123, required by RFC 2616	1020	# RFC 822/1123, required by RFC 2616 (with " ")
		1021	# cookie dates (with "-")
		1022
870	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);	1023	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
871		1024
872	} elsif ($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$/) {	1025	} elsif ($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$/) {
873	# RFC 850	1026	# RFC 850
874	($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 1.63 by root, Thu Dec 30 04:31:55 2010 UTC vs. Revision 1.78 by root, Sat Jan 1 19:32:41 2011 UTC

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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 1.78 by root, Sat Jan 1 19:32:41 2011 UTC