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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.60 by root, Thu Dec 30 02:56:28 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. 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	# 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
354	our $qr_nlnl = qr{(?<![^\012])\015?\012};	525	our $qr_nlnl = qr{(?<![^\012])\015?\012};
355		526
356	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	527	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
357	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	528	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
358		529
…		…
377	my @pseudo = (URL => $url);	548	my @pseudo = (URL => $url);
378	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	549	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
379		550
380	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	551	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
381		552
382	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	553	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
383	if $recurse < 0;	554	if $recurse < 0;
384		555
385	my $proxy = $arg{proxy} \|\| $PROXY;	556	my $proxy = $arg{proxy} \|\| $PROXY;
386	my $timeout = $arg{timeout} \|\| $TIMEOUT;	557	my $timeout = $arg{timeout} \|\| $TIMEOUT;
387		558
…		…
390		561
391	$uscheme = lc $uscheme;	562	$uscheme = lc $uscheme;
392		563
393	my $uport = $uscheme eq "http" ? 80	564	my $uport = $uscheme eq "http" ? 80
394	: $uscheme eq "https" ? 443	565	: $uscheme eq "https" ? 443
395	: 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" });
396		567
397	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	568	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
398	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	569	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
399		570
400	my $uhost = $1;	571	my $uhost = $1;
401	$uport = $2 if defined $2;	572	$uport = $2 if defined $2;
402		573
403	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	574	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
…		…
408		579
409	$upath =~ s%^/?%/%;	580	$upath =~ s%^/?%/%;
410		581
411	# cookie processing	582	# cookie processing
412	if (my $jar = $arg{cookie_jar}) {	583	if (my $jar = $arg{cookie_jar}) {
413	%$jar = () if $jar->{version} != 1;	584	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
414		585
415	my @cookie;
416
417	while (my ($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	586	$hdr{cookie} = join "; ", @$cookies
439	if @cookie;	587	if @$cookies;
440	}	588	}
441		589
442	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	590	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
443		591
444	if ($proxy) {	592	if ($proxy) {
…		…
452	} else {	600	} else {
453	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	601	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
454	}	602	}
455		603
456	# leave out fragment and query string, just a heuristic	604	# leave out fragment and query string, just a heuristic
457	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	605	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
458	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	606	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
459		607
460	$hdr{"content-length"} = length $arg{body}	608	$hdr{"content-length"} = length $arg{body}
461	if length $arg{body} \|\| $method ne "GET";	609	if length $arg{body} \|\| $method ne "GET";
462		610
		611	$hdr{connection} = "close TE"; #1.1
		612	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		613
463	my %state = (connect_guard => 1);	614	my %state = (connect_guard => 1);
464		615
465	_get_slot $uhost, sub {	616	_get_slot $uhost, sub {
466	$state{slot_guard} = shift;	617	$state{slot_guard} = shift;
467		618
468	return unless $state{connect_guard};	619	return unless $state{connect_guard};
469		620
470	my $tcp_connect = $arg{tcp_connect}	621	my $ae_error = 595; # connecting
471	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
472		622
473	$state{connect_guard} = $tcp_connect->(	623	my $connect_cb = sub {
474	$rhost,
475	$rport,
476	sub {
477	$state{fh} = shift	624	$state{fh} = shift
478	or do {	625	or do {
479	my $err = "$!";	626	my $err = "$!";
480	%state = ();	627	%state = ();
481	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	628	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
482	};	629	};
483		630
484	pop; # free memory, save a tree
485
486	return unless delete $state{connect_guard};	631	return unless delete $state{connect_guard};
487		632
488	# get handle	633	# get handle
489	$state{handle} = new AnyEvent::Handle	634	$state{handle} = new AnyEvent::Handle
490	fh => $state{fh},	635	fh => $state{fh},
491	peername => $rhost,	636	peername => $rhost,
492	tls_ctx => $arg{tls_ctx},	637	tls_ctx => $arg{tls_ctx},
493	# these need to be reconfigured on keepalive handles	638	# these need to be reconfigured on keepalive handles
494	timeout => $timeout,	639	timeout => $timeout,
495	on_error => sub {	640	on_error => sub {
496	%state = ();	641	%state = ();
497	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	642	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
498	},	643	},
499	on_eof => sub {	644	on_eof => sub {
500	%state = ();	645	%state = ();
501	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	646	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
502	},	647	},
503	;	648	;
504		649
505	# limit the number of persistent connections	650	# limit the number of persistent connections
506	# keepalive not yet supported	651	# keepalive not yet supported
507	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	652	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
508	# ++$KA_COUNT{$_[1]};	653	# ++$KA_COUNT{$_[1]};
509	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	654	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
510	# --$KA_COUNT{$_[1]}	655	# --$KA_COUNT{$_[1]}
511	# };	656	# };
512	# $hdr{connection} = "keep-alive";	657	# $hdr{connection} = "keep-alive";
513	# } else {
514	delete $hdr{connection};
515	# }	658	# }
516		659
517	$state{handle}->starttls ("connect") if $rscheme eq "https";	660	$state{handle}->starttls ("connect") if $rscheme eq "https";
518		661
519	# handle actual, non-tunneled, request	662	# handle actual, non-tunneled, request
520	my $handle_actual_request = sub {	663	my $handle_actual_request = sub {
		664	$ae_error = 596; # request phase
		665
521	$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};
522		667
523	# send request	668	# send request
524	$state{handle}->push_write (	669	$state{handle}->push_write (
525	"$method $rpath HTTP/1.0\015\012"	670	"$method $rpath HTTP/1.1\015\012"
526	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	671	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
527	. "\015\012"	672	. "\015\012"
528	. (delete $arg{body})	673	. (delete $arg{body})
529	);	674	);
530		675
531	# return if error occured during push_write()	676	# return if error occured during push_write()
532	return unless %state;	677	return unless %state;
533		678
534	%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
535		680
536	# status line and headers	681	# status line and headers
537	$state{handle}->push_read (line => $qr_nlnl, sub {	682	$state{read_response} = sub {
538	for ("$_[1]") {	683	for ("$_[1]") {
539	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.
540		685
541	/^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
542	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" }));
543		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
544	push @pseudo,	697	push @pseudo,
545	HTTPVersion => $1,	698	HTTPVersion => $1,
546	Status => $2,	699	Status => $2,
547	Reason => $3,	700	Reason => $3,
548	;	701	;
549		702
550	# things seen, not parsed:	703	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 }));	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	$url =~ s/\/[^\/]*$//;
563	}	720	}
564		721
565	# remove the "," prefix we added to all headers above	722	$hdr{location} = "$url/$hdr{location}";
566	substr $_, 0, 1, ""	723	}
567	for values %hdr;
568		724
569	# patch in all pseudo headers	725	my $redirect;
570	%hdr = (%hdr, @pseudo);
571		726
		727	if ($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";
572	# redirect handling	738	$redirect = 1;
573	# microsoft and other shitheads don't give a shit for following standards,	739	} elsif ($status == 307) {
574	# try to support some common forms of broken Location headers.	740	$redirect = 1;
575	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	741	}
576	$hdr{location} =~ s/^\.\/+//;	742	}
577		743
578	my $url = "$rscheme://$uhost:$uport";	744	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		745	my $may_keep_alive = $_[3];
579		746
580	unless ($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) {
581	$url .= $upath;	814	$cl += $len;
582	$url =~ s/\/[^\/]*$//;	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	});
583	}	867	}
584
585	$hdr{location} = "$url/$hdr{location}";
586	}	868	} else {
		869	$_[0]->on_eof (undef);
587		870
588	my $redirect;
589
590	if ($recurse) {	871	if ($len) {
591	my $status = $hdr{Status};	872	$_[0]->on_read (sub {
592		873	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
593	# industry standard is to redirect POST as GET for	874	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	$redirect = 1;	875	});
602	} elsif ($status == 307) {	876	} else {
		877	$_[0]->on_error (sub {
		878	($! == Errno::EPIPE \|\| !$!)
		879	? $finish->(delete $_[0]{rbuf})
		880	: $finish->(undef, $ae_error => $_[2]);
603	$redirect = 1;	881	});
		882	$_[0]->on_read (sub { });
604	}	883	}
605	}	884	}
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	});	885	}
740	};	886	};
741		887
		888	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		889	};
		890
742	# now handle proxy-CONNECT method	891	# now handle proxy-CONNECT method
743	if ($proxy && $uscheme eq "https") {	892	if ($proxy && $uscheme eq "https") {
744	# oh dear, we have to wrap it into a connect request	893	# oh dear, we have to wrap it into a connect request
745		894
746	# maybe re-use $uauthority with patched port?	895	# 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");	896	$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 {	897	$state{handle}->push_read (line => $qr_nlnl, sub {
749	$_[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
750	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])" }));
751		900
752	if ($2 == 200) {	901	if ($2 == 200) {
753	$rpath = $upath;	902	$rpath = $upath;
754	&$handle_actual_request;	903	&$handle_actual_request;
755	} else {	904	} else {
756	%state = ();	905	%state = ();
757	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	906	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
758	}
759	});	907	}
		908	});
760	} else {	909	} else {
761	&$handle_actual_request;	910	&$handle_actual_request;
762	}
763
764	},	911	}
765	$arg{on_prepare} \|\| sub { $timeout }
766	);	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
767	};	919	};
768		920
769	defined wantarray && AnyEvent::Util::guard { %state = () }	921	defined wantarray && AnyEvent::Util::guard { %state = () }
770	}	922	}
771		923
…		…
806	string of the form C<http://host:port> (optionally C<https:...>), croaks	958	string of the form C<http://host:port> (optionally C<https:...>), croaks
807	otherwise.	959	otherwise.
808		960
809	To clear an already-set proxy, use C<undef>.	961	To clear an already-set proxy, use C<undef>.
810		962
		963	=item $date = AnyEvent::HTTP::format_date $timestamp
		964
		965	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		966	Date (RFC 2616).
		967
		968	=item $timestamp = AnyEvent::HTTP::parse_date $date
		969
		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
		972	timestamp, or C<undef> if the date cannot be parsed.
		973
811	=item $AnyEvent::HTTP::MAX_RECURSE	974	=item $AnyEvent::HTTP::MAX_RECURSE
812		975
813	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>).
814		977
815	=item $AnyEvent::HTTP::USERAGENT	978	=item $AnyEvent::HTTP::USERAGENT
…		…
833	connections. This number of can be useful for load-leveling.	996	connections. This number of can be useful for load-leveling.
834		997
835	=back	998	=back
836		999
837	=cut	1000	=cut
		1001
		1002	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1003	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1004
		1005	sub format_date($) {
		1006	my ($time) = @_;
		1007
		1008	# RFC 822/1123 format
		1009	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1010
		1011	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1012	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1013	$H, $M, $S;
		1014	}
		1015
		1016	sub parse_date($) {
		1017	my ($date) = @_;
		1018
		1019	my ($d, $m, $y, $H, $M, $S);
		1020
		1021	if ($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$/) {
		1022	# RFC 822/1123, required by RFC 2616 (with " ")
		1023	# cookie dates (with "-")
		1024
		1025	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1026
		1027	} elsif ($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$/) {
		1028	# RFC 850
		1029	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1030
		1031	} elsif ($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])$/) {
		1032	# ISO C's asctime
		1033	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1034	}
		1035	# other formats fail in the loop below
		1036
		1037	for (0..11) {
		1038	if ($m eq $month[$_]) {
		1039	require Time::Local;
		1040	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1041	}
		1042	}
		1043
		1044	undef
		1045	}
838		1046
839	sub set_proxy($) {	1047	sub set_proxy($) {
840	if (length $_[0]) {	1048	if (length $_[0]) {
841	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	1049	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
842	or Carp::croak "$_[0]: invalid proxy URL";	1050	or Carp::croak "$_[0]: invalid proxy URL";

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.60 by root, Thu Dec 30 02:56:28 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 1.60 by root, Thu Dec 30 02:56:28 2010 UTC vs.
Revision 1.79 by root, Sat Jan 1 20:01:07 2011 UTC