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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 1.86 by root, Sun Jan 2 06:38:32 2011 UTC

36 36
37=cut 37=cut
38 38
39package AnyEvent::HTTP; 39package AnyEvent::HTTP;
40 40
41use strict; 41use common::sense;
42no warnings;
43 42
44use Errno (); 43use Errno ();
45 44
46use AnyEvent 5.0 (); 45use AnyEvent 5.0 ();
47use AnyEvent::Util (); 46use AnyEvent::Util ();
48use AnyEvent::Handle (); 47use AnyEvent::Handle ();
49 48
50use base Exporter::; 49use base Exporter::;
51 50
52our $VERSION = '1.46'; 51our $VERSION = '1.5';
53 52
54our @EXPORT = qw(http_get http_post http_head http_request); 53our @EXPORT = qw(http_get http_post http_head http_request);
55 54
56our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; 55our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
57our $MAX_RECURSE = 10; 56our $MAX_RECURSE = 10;
94C<http_request> returns a "cancellation guard" - you have to keep the 93C<http_request> returns a "cancellation guard" - you have to keep the
95object at least alive until the callback get called. If the object gets 94object at least alive until the callback get called. If the object gets
96destroyed before the callback is called, the request will be cancelled. 95destroyed before the callback is called, the request will be cancelled.
97 96
98The callback will be called with the response body data as first argument 97The 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 98(or C<undef> if an error occured), and a hash-ref with response headers
100second argument. 99(and trailers) as second argument.
101 100
102All the headers in that hash are lowercased. In addition to the response 101All the headers in that hash are lowercased. In addition to the response
103headers, the "pseudo-headers" (uppercase to avoid clashing with possible 102headers, the "pseudo-headers" (uppercase to avoid clashing with possible
104response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the 103response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105three parts of the HTTP Status-Line of the same name. 104three parts of the HTTP Status-Line of the same name. If an error occurs
105during the body phase of a request, then the original C<Status> and
106C<Reason> values from the header are available as C<OrigStatus> and
107C<OrigReason>.
106 108
107The pseudo-header C<URL> contains the actual URL (which can differ from 109The pseudo-header C<URL> contains the actual URL (which can differ from
108the requested URL when following redirects - for example, you might get 110the requested URL when following redirects - for example, you might get
109an error that your URL scheme is not supported even though your URL is a 111an error that your URL scheme is not supported even though your URL is a
110valid http URL because it redirected to an ftp URL, in which case you can 112valid http URL because it redirected to an ftp URL, in which case you can
119 121
120If the server sends a header multiple times, then their contents will be 122If the server sends a header multiple times, then their contents will be
121joined together with a comma (C<,>), as per the HTTP spec. 123joined together with a comma (C<,>), as per the HTTP spec.
122 124
123If an internal error occurs, such as not being able to resolve a hostname, 125If an internal error occurs, such as not being able to resolve a hostname,
124then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x> 126then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
125(usually C<599>) and the C<Reason> pseudo-header will contain an error 127C<590>-C<599> and the C<Reason> pseudo-header will contain an error
126message. 128message. Currently the following status codes are used:
129
130=over 4
131
132=item 595 - errors during connection etsbalishment, proxy handshake.
133
134=item 596 - errors during TLS negotiation, request sending and header processing.
135
136=item 597 - errors during body receiving or processing.
137
138=item 598 - user aborted request via C<on_header> or C<on_body>.
139
140=item 599 - other, usually nonretryable, errors (garbled URL etc.).
141
142=back
127 143
128A typical callback might look like this: 144A typical callback might look like this:
129 145
130 sub { 146 sub {
131 my ($body, $hdr) = @_; 147 my ($body, $hdr) = @_;
147Whether to recurse requests or not, e.g. on redirects, authentication 163Whether to recurse requests or not, e.g. on redirects, authentication
148retries and so on, and how often to do so. 164retries and so on, and how often to do so.
149 165
150=item headers => hashref 166=item headers => hashref
151 167
152The request headers to use, with the header name (I<MUST be in lowercase>) 168The request headers to use. Currently, C<http_request> may provide its own
153as key and header value as hash value. 169C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
154 170will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
155Currently, http_request> may provide its own C<host>, C<content-length>, 171(this can be suppressed by using C<undef> for these headers in which case
156C<connection> and C<cookie> headers and will provide defaults for 172they won't be sent at all).
157C<user-agent> and C<referer> (this can be suppressed by using a value of
158C<undef> for these headers in which case they won't be sent at all).
159 173
160=item timeout => $seconds 174=item timeout => $seconds
161 175
162The time-out to use for various stages - each connect attempt will reset 176The time-out to use for various stages - each connect attempt will reset
163the timeout, as will read or write activity, i.e. this is not an overall 177the timeout, as will read or write activity, i.e. this is not an overall
173C<$scheme> must be either missing, C<http> for HTTP or C<https> for 187C<$scheme> must be either missing, C<http> for HTTP or C<https> for
174HTTPS. 188HTTPS.
175 189
176=item body => $string 190=item body => $string
177 191
178The request body, usually empty. Will be-sent as-is (future versions of 192The request body, usually empty. Will be sent as-is (future versions of
179this module might offer more options). 193this module might offer more options).
180 194
181=item cookie_jar => $hash_ref 195=item cookie_jar => $hash_ref
182 196
183Passing this parameter enables (simplified) cookie-processing, loosely 197Passing this parameter enables (simplified) cookie-processing, loosely
184based on the original netscape specification. 198based on the original netscape specification.
185 199
186The C<$hash_ref> must be an (initially empty) hash reference which will 200The C<$hash_ref> must be an (initially empty) hash reference which
187get updated automatically. It is possible to save the cookie_jar to 201will get updated automatically. It is possible to save the cookie jar
188persistent storage with something like JSON or Storable, but this is not 202to persistent storage with something like JSON or Storable - see the
189recommended, as expiry times are currently being ignored. 203C<AnyEvent::HTTP::cookie_jar_expire> function if you wish to remove
204expired or session-only cookies, and also for documentation on the format
205of the cookie jar.
190 206
191Note that this cookie implementation is not of very high quality, nor 207Note that this cookie implementation is not meant to be complete. If
192meant to be complete. If you want complete cookie management you have to 208you want complete cookie management you have to do that on your
193do that on your own. C<cookie_jar> is meant as a quick fix to get some 209own. C<cookie_jar> is meant as a quick fix to get most cookie-using sites
194cookie-using sites working. Cookies are a privacy disaster, do not use 210working. Cookies are a privacy disaster, do not use them unless required
195them unless required to. 211to.
212
213When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
214headers will be set and handled by this module, otherwise they will be
215left untouched.
196 216
197=item tls_ctx => $scheme | $tls_ctx 217=item tls_ctx => $scheme | $tls_ctx
198 218
199Specifies the AnyEvent::TLS context to be used for https connections. This 219Specifies the AnyEvent::TLS context to be used for https connections. This
200parameter follows the same rules as the C<tls_ctx> parameter to 220parameter follows the same rules as the C<tls_ctx> parameter to
239 259
240This callback is useful, among other things, to quickly reject unwanted 260This callback is useful, among other things, to quickly reject unwanted
241content, which, if it is supposed to be rare, can be faster than first 261content, which, if it is supposed to be rare, can be faster than first
242doing a C<HEAD> request. 262doing a C<HEAD> request.
243 263
264The downside is that cancelling the request makes it impossible to re-use
265the connection. Also, the C<on_header> callback will not receive any
266trailer (headers sent after the response body).
267
244Example: cancel the request unless the content-type is "text/html". 268Example: cancel the request unless the content-type is "text/html".
245 269
246 on_header => sub { 270 on_header => sub {
247 $_[0]{"content-type"} =~ /^text\/html\s*(?:;|$)/ 271 $_[0]{"content-type"} =~ /^text\/html\s*(?:;|$)/
248 }, 272 },
254string instead of the body data. 278string instead of the body data.
255 279
256It has to return either true (in which case AnyEvent::HTTP will continue), 280It has to return either true (in which case AnyEvent::HTTP will continue),
257or false, in which case AnyEvent::HTTP will cancel the download (and call 281or false, in which case AnyEvent::HTTP will cancel the download (and call
258the completion callback with an error code of C<598>). 282the completion callback with an error code of C<598>).
283
284The downside to cancelling the request is that it makes it impossible to
285re-use the connection.
259 286
260This callback is useful when the data is too large to be held in memory 287This 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 288(so the callback writes it to a file) or when only some information should
262be extracted, or when the body should be processed incrementally. 289be extracted, or when the body should be processed incrementally.
263 290
289If you think you need this, first have a look at C<on_body>, to see if 316If you think you need this, first have a look at C<on_body>, to see if
290that doesn't solve your problem in a better way. 317that doesn't solve your problem in a better way.
291 318
292=back 319=back
293 320
294Example: make a simple HTTP GET request for http://www.nethype.de/ 321Example: do a simple HTTP GET request for http://www.nethype.de/ and print
322the response body.
295 323
296 http_request GET => "http://www.nethype.de/", sub { 324 http_request GET => "http://www.nethype.de/", sub {
297 my ($body, $hdr) = @_; 325 my ($body, $hdr) = @_;
298 print "$body\n"; 326 print "$body\n";
299 }; 327 };
300 328
301Example: make a HTTP HEAD request on https://www.google.com/, use a 329Example: do a HTTP HEAD request on https://www.google.com/, use a
302timeout of 30 seconds. 330timeout of 30 seconds.
303 331
304 http_request 332 http_request
305 GET => "https://www.google.com", 333 GET => "https://www.google.com",
306 timeout => 30, 334 timeout => 30,
309 use Data::Dumper; 337 use Data::Dumper;
310 print Dumper $hdr; 338 print Dumper $hdr;
311 } 339 }
312 ; 340 ;
313 341
314Example: make another simple HTTP GET request, but immediately try to 342Example: do another simple HTTP GET request, but immediately try to
315cancel it. 343cancel it.
316 344
317 my $request = http_request GET => "http://www.nethype.de/", sub { 345 my $request = http_request GET => "http://www.nethype.de/", sub {
318 my ($body, $hdr) = @_; 346 my ($body, $hdr) = @_;
319 print "$body\n"; 347 print "$body\n";
351 push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; 379 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
352 380
353 _slot_schedule $_[0]; 381 _slot_schedule $_[0];
354} 382}
355 383
384#############################################################################
385
386# expire cookies
387sub cookie_jar_expire($;$) {
388 my ($jar, $session_end) = @_;
389
390 %$jar = () if $jar->{version} != 1;
391
392 my $anow = AE::now;
393
394 while (my ($chost, $paths) = each %$jar) {
395 next unless ref $paths;
396
397 while (my ($cpath, $cookies) = each %$paths) {
398 while (my ($cookie, $kv) = each %$cookies) {
399 if (exists $kv->{_expires}) {
400 delete $cookies->{$cookie}
401 if $anow > $kv->{_expires};
402 } elsif ($session_end) {
403 delete $cookies->{$cookie};
404 }
405 }
406
407 delete $paths->{$cpath}
408 unless %$cookies;
409 }
410
411 delete $jar->{$chost}
412 unless %$paths;
413 }
414}
415
416# extract cookies from jar
417sub cookie_jar_extract($$$$) {
418 my ($jar, $uscheme, $uhost, $upath) = @_;
419
420 %$jar = () if $jar->{version} != 1;
421
422 my @cookies;
423
424 while (my ($chost, $paths) = each %$jar) {
425 next unless ref $paths;
426
427 if ($chost =~ /^\./) {
428 next unless $chost eq substr $uhost, -length $chost;
429 } elsif ($chost =~ /\./) {
430 next unless $chost eq $uhost;
431 } else {
432 next;
433 }
434
435 while (my ($cpath, $cookies) = each %$paths) {
436 next unless $cpath eq substr $upath, 0, length $cpath;
437
438 while (my ($cookie, $kv) = each %$cookies) {
439 next if $uscheme ne "https" && exists $kv->{secure};
440
441 if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
442 delete $cookies->{$cookie};
443 next;
444 }
445
446 my $value = $kv->{value};
447
448 if ($value =~ /[=;,[:space:]]/) {
449 $value =~ s/([\\"])/\\$1/g;
450 $value = "\"$value\"";
451 }
452
453 push @cookies, "$cookie=$value";
454 }
455 }
456 }
457
458 \@cookies
459}
460
461# parse set_cookie header into jar
462sub cookie_jar_set_cookie($$$$) {
463 my ($jar, $set_cookie, $uhost, $date) = @_;
464
465 my $anow = int AE::now;
466 my $snow; # server-now
467
468 for ($set_cookie) {
469 # parse NAME=VALUE
470 my @kv;
471
472 # expires is not http-compliant in the original cookie-spec,
473 # we support the official date format and some extensions
474 while (
475 m{
476 \G\s*
477 (?:
478 expires \s*=\s* ([A-Z][a-z][a-z]+,\ [^,;]+)
479 | ([^=;,[:space:]]+) (?: \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) ) )?
480 )
481 }gcxsi
482 ) {
483 my $name = $2;
484 my $value = $4;
485
486 if (defined $1) {
487 # expires
488 $name = "expires";
489 $value = $1;
490 } elsif (defined $3) {
491 # quoted
492 $value = $3;
493 $value =~ s/\\(.)/$1/gs;
494 }
495
496 push @kv, lc $name, $value;
497
498 last unless /\G\s*;/gc;
499 }
500
501 last unless @kv;
502
503 my $name = shift @kv;
504 my %kv = (value => shift @kv, @kv);
505
506 if (exists $kv{"max-age"}) {
507 $kv{_expires} = $anow + delete $kv{"max-age"};
508 } elsif (exists $kv{expires}) {
509 $snow ||= parse_date ($date) || $anow;
510 $kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow);
511 } else {
512 delete $kv{_expires};
513 }
514
515 my $cdom;
516 my $cpath = (delete $kv{path}) || "/";
517
518 if (exists $kv{domain}) {
519 $cdom = delete $kv{domain};
520
521 $cdom =~ s/^\.?/./; # make sure it starts with a "."
522
523 next if $cdom =~ /\.$/;
524
525 # this is not rfc-like and not netscape-like. go figure.
526 my $ndots = $cdom =~ y/.//;
527 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
528 } else {
529 $cdom = $uhost;
530 }
531
532 # store it
533 $jar->{version} = 1;
534 $jar->{lc $cdom}{$cpath}{$name} = \%kv;
535
536 redo if /\G\s*,/gc;
537 }
538}
539
540# continue to parse $_ for headers and place them into the arg
541sub parse_hdr() {
542 my %hdr;
543
544 # things seen, not parsed:
545 # p3pP="NON CUR OTPi OUR NOR UNI"
546
547 $hdr{lc $1} .= ",$2"
548 while /\G
549 ([^:\000-\037]*):
550 [\011\040]*
551 ((?: [^\012]+ | \012[\011\040] )*)
552 \012
553 /gxc;
554
555 /\G$/
556 or return;
557
558 # remove the "," prefix we added to all headers above
559 substr $_, 0, 1, ""
560 for values %hdr;
561
562 \%hdr
563}
564
356our $qr_nlnl = qr{(?<![^\012])\015?\012}; 565our $qr_nlnl = qr{(?<![^\012])\015?\012};
357 566
358our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; 567our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
359our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; 568our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
360 569
379 my @pseudo = (URL => $url); 588 my @pseudo = (URL => $url);
380 push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect}; 589 push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
381 590
382 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; 591 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
383 592
384 return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo }) 593 return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
385 if $recurse < 0; 594 if $recurse < 0;
386 595
387 my $proxy = $arg{proxy} || $PROXY; 596 my $proxy = $arg{proxy} || $PROXY;
388 my $timeout = $arg{timeout} || $TIMEOUT; 597 my $timeout = $arg{timeout} || $TIMEOUT;
389 598
392 601
393 $uscheme = lc $uscheme; 602 $uscheme = lc $uscheme;
394 603
395 my $uport = $uscheme eq "http" ? 80 604 my $uport = $uscheme eq "http" ? 80
396 : $uscheme eq "https" ? 443 605 : $uscheme eq "https" ? 443
397 : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo }); 606 : return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
398 607
399 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x 608 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
400 or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo }); 609 or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
401 610
402 my $uhost = $1; 611 my $uhost = lc $1;
403 $uport = $2 if defined $2; 612 $uport = $2 if defined $2;
404 613
405 $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost" 614 $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
406 unless exists $hdr{host}; 615 unless exists $hdr{host};
407 616
410 619
411 $upath =~ s%^/?%/%; 620 $upath =~ s%^/?%/%;
412 621
413 # cookie processing 622 # cookie processing
414 if (my $jar = $arg{cookie_jar}) { 623 if (my $jar = $arg{cookie_jar}) {
415 %$jar = () if $jar->{version} != 1; 624 my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
416 625
417 my @cookie;
418
419 while (my ($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 626 $hdr{cookie} = join "; ", @$cookies
441 if @cookie; 627 if @$cookies;
442 } 628 }
443 629
444 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path 630 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
445 631
446 if ($proxy) { 632 if ($proxy) {
449 $rscheme = "http" unless defined $rscheme; 635 $rscheme = "http" unless defined $rscheme;
450 636
451 # don't support https requests over https-proxy transport, 637 # don't support https requests over https-proxy transport,
452 # can't be done with tls as spec'ed, unless you double-encrypt. 638 # can't be done with tls as spec'ed, unless you double-encrypt.
453 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; 639 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
640
641 $rhost = lc $rhost;
642 $rscheme = lc $rscheme;
454 } else { 643 } else {
455 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); 644 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
456 } 645 }
457 646
458 # leave out fragment and query string, just a heuristic 647 # leave out fragment and query string, just a heuristic
459 $hdr{referer} ||= "$uscheme://$uauthority$upath" unless exists $hdr{referer}; 648 $hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
460 $hdr{"user-agent"} ||= $USERAGENT unless exists $hdr{"user-agent"}; 649 $hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
461 650
462 $hdr{"content-length"} = length $arg{body} 651 $hdr{"content-length"} = length $arg{body}
463 if length $arg{body} || $method ne "GET"; 652 if length $arg{body} || $method ne "GET";
464 653
654 $hdr{connection} = "close TE"; #1.1
655 $hdr{te} = "trailers" unless exists $hdr{te}; #1.1
656
465 my %state = (connect_guard => 1); 657 my %state = (connect_guard => 1);
466 658
467 _get_slot $uhost, sub { 659 _get_slot $uhost, sub {
468 $state{slot_guard} = shift; 660 $state{slot_guard} = shift;
469 661
470 return unless $state{connect_guard}; 662 return unless $state{connect_guard};
471 663
472 my $tcp_connect = $arg{tcp_connect} 664 my $ae_error = 595; # connecting
473 || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
474 665
475 $state{connect_guard} = $tcp_connect->( 666 # handle actual, non-tunneled, request
476 $rhost, 667 my $handle_actual_request = sub {
477 $rport, 668 $ae_error = 596; # request phase
478 sub { 669
479 $state{fh} = shift 670 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
671
672 # send request
673 $state{handle}->push_write (
674 "$method $rpath HTTP/1.1\015\012"
675 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
676 . "\015\012"
677 . (delete $arg{body})
678 );
679
680 # return if error occured during push_write()
681 return unless %state;
682
683 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
684
685 # status line and headers
686 $state{read_response} = sub {
687 for ("$_[1]") {
688 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
689
690 /^HTTP\/0*([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/gxci
691 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
692
693 # 100 Continue handling
694 # should not happen as we don't send expect: 100-continue,
695 # but we handle it just in case.
696 # since we send the request body regardless, if we get an error
697 # we are out of-sync, which we currently do NOT handle correctly.
698 return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
699 if $2 eq 100;
700
701 push @pseudo,
702 HTTPVersion => $1,
703 Status => $2,
704 Reason => $3,
480 or do { 705 ;
706
707 my $hdr = parse_hdr
708 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
709
710 %hdr = (%$hdr, @pseudo);
711 }
712
713 # redirect handling
714 # microsoft and other shitheads don't give a shit for following standards,
715 # try to support some common forms of broken Location headers.
716 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
717 $hdr{location} =~ s/^\.\/+//;
718
719 my $url = "$rscheme://$uhost:$uport";
720
721 unless ($hdr{location} =~ s/^\///) {
722 $url .= $upath;
723 $url =~ s/\/[^\/]*$//;
724 }
725
726 $hdr{location} = "$url/$hdr{location}";
727 }
728
729 my $redirect;
730
731 if ($recurse) {
732 my $status = $hdr{Status};
733
734 # industry standard is to redirect POST as GET for
735 # 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
736 # also, the UA should ask the user for 301 and 307 and POST,
737 # industry standard seems to be to simply follow.
738 # we go with the industry standard.
739 if ($status == 301 or $status == 302 or $status == 303) {
740 # HTTP/1.1 is unclear on how to mutate the method
741 $method = "GET" unless $method eq "HEAD";
481 my $err = "$!"; 742 $redirect = 1;
743 } elsif ($status == 307) {
744 $redirect = 1;
745 }
746 }
747
748 my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
749 my $may_keep_alive = $_[3];
750
751 $state{handle}->destroy if $state{handle};
482 %state = (); 752 %state = ();
483 return $cb->(undef, { Status => 599, Reason => $err, @pseudo }); 753
754 if (defined $_[1]) {
755 $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
756 $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
757 }
758
759 # set-cookie processing
760 if ($arg{cookie_jar}) {
761 cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost, $hdr{date};
762 }
763
764 if ($redirect && exists $hdr{location}) {
765 # we ignore any errors, as it is very common to receive
766 # Content-Length != 0 but no actual body
767 # we also access %hdr, as $_[1] might be an erro
768 http_request (
769 $method => $hdr{location},
770 %arg,
771 recurse => $recurse - 1,
772 Redirect => [$_[0], \%hdr],
773 $cb);
774 } else {
775 $cb->($_[0], \%hdr);
776 }
777 };
778
779 $ae_error = 597; # body phase
780
781 my $len = $hdr{"content-length"};
782
783 # body handling, many different code paths
784 # - no body expected
785 # - want_body_handle
786 # - te chunked
787 # - 2x length known (with or without on_body)
788 # - 2x length not known (with or without on_body)
789 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
790 $finish->(undef, 598 => "Request cancelled by on_header");
791 } elsif (
792 $hdr{Status} =~ /^(?:1..|204|205|304)$/
793 or $method eq "HEAD"
794 or (defined $len && $len == 0) # == 0, not !, because "0 " is true
795 ) {
796 # no body
797 $finish->("", undef, undef, 1);
798
799 } elsif (!$redirect && $arg{want_body_handle}) {
800 $_[0]->on_eof (undef);
801 $_[0]->on_error (undef);
802 $_[0]->on_read (undef);
803
804 $finish->(delete $state{handle});
805
806 } elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
807 my $cl = 0;
808 my $body = undef;
809 my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
810
811 $state{read_chunk} = sub {
812 $_[1] =~ /^([0-9a-fA-F]+)/
813 or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
814
815 my $len = hex $1;
816
817 if ($len) {
818 $cl += $len;
819
820 $_[0]->push_read (chunk => $len, sub {
821 $on_body->($_[1], \%hdr)
822 or return $finish->(undef, 598 => "Request cancelled by on_body");
823
824 $_[0]->push_read (line => sub {
825 length $_[1]
826 and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
827 $_[0]->push_read (line => $state{read_chunk});
828 });
829 });
830 } else {
831 $hdr{"content-length"} ||= $cl;
832
833 $_[0]->push_read (line => $qr_nlnl, sub {
834 if (length $_[1]) {
835 for ("$_[1]") {
836 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
837
838 my $hdr = parse_hdr
839 or return $finish->(undef, $ae_error => "Garbled response trailers");
840
841 %hdr = (%hdr, %$hdr);
842 }
843 }
844
845 $finish->($body, undef, undef, 1);
846 });
847 }
484 }; 848 };
485 849
486 pop; # free memory, save a tree 850 $_[0]->push_read (line => $state{read_chunk});
487 851
852 } elsif ($arg{on_body}) {
853 if (defined $len) {
854 $_[0]->on_read (sub {
855 $len -= length $_[0]{rbuf};
856
857 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
858 or return $finish->(undef, 598 => "Request cancelled by on_body");
859
860 $len > 0
861 or $finish->("", undef, undef, 1);
862 });
863 } else {
864 $_[0]->on_eof (sub {
865 $finish->("");
866 });
867 $_[0]->on_read (sub {
868 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
869 or $finish->(undef, 598 => "Request cancelled by on_body");
870 });
871 }
872 } else {
873 $_[0]->on_eof (undef);
874
875 if (defined $len) {
876 $_[0]->on_read (sub {
877 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
878 if $len <= length $_[0]{rbuf};
879 });
880 } else {
881 $_[0]->on_error (sub {
882 ($! == Errno::EPIPE || !$!)
883 ? $finish->(delete $_[0]{rbuf})
884 : $finish->(undef, $ae_error => $_[2]);
885 });
886 $_[0]->on_read (sub { });
887 }
888 }
889 };
890
891 $state{handle}->push_read (line => $qr_nlnl, $state{read_response});
892 };
893
894 my $connect_cb = sub {
895 $state{fh} = shift
896 or do {
897 my $err = "$!";
898 %state = ();
899 return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
900 };
901
488 return unless delete $state{connect_guard}; 902 return unless delete $state{connect_guard};
489 903
490 # get handle 904 # get handle
491 $state{handle} = new AnyEvent::Handle 905 $state{handle} = new AnyEvent::Handle
492 fh => $state{fh}, 906 fh => $state{fh},
493 peername => $rhost, 907 peername => $rhost,
494 tls_ctx => $arg{tls_ctx}, 908 tls_ctx => $arg{tls_ctx},
495 # these need to be reconfigured on keepalive handles 909 # these need to be reconfigured on keepalive handles
496 timeout => $timeout, 910 timeout => $timeout,
497 on_error => sub { 911 on_error => sub {
498 %state = (); 912 %state = ();
499 $cb->(undef, { Status => 599, Reason => $_[2], @pseudo }); 913 $cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
500 }, 914 },
501 on_eof => sub { 915 on_eof => sub {
502 %state = (); 916 %state = ();
503 $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo }); 917 $cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
504 }, 918 },
505 ; 919 ;
506 920
507 # limit the number of persistent connections 921 # limit the number of persistent connections
508 # keepalive not yet supported 922 # keepalive not yet supported
509# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 923# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
510# ++$KA_COUNT{$_[1]}; 924# ++$KA_COUNT{$_[1]};
511# $state{handle}{ka_count_guard} = AnyEvent::Util::guard { 925# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
512# --$KA_COUNT{$_[1]} 926# --$KA_COUNT{$_[1]}
513# }; 927# };
514# $hdr{connection} = "keep-alive"; 928# $hdr{connection} = "keep-alive";
515# } else {
516 delete $hdr{connection};
517# } 929# }
518 930
519 $state{handle}->starttls ("connect") if $rscheme eq "https"; 931 $state{handle}->starttls ("connect") if $rscheme eq "https";
520 932
521 # handle actual, non-tunneled, request
522 my $handle_actual_request = sub {
523 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
524
525 # send request
526 $state{handle}->push_write (
527 "$method $rpath HTTP/1.0\015\012"
528 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
529 . "\015\012"
530 . (delete $arg{body})
531 );
532
533 # return if error occured during push_write()
534 return unless %state;
535
536 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
537
538 # status line and headers
539 $state{handle}->push_read (line => $qr_nlnl, sub {
540 for ("$_[1]") {
541 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
542
543 /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc
544 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo }));
545
546 push @pseudo,
547 HTTPVersion => $1,
548 Status => $2,
549 Reason => $3,
550 ;
551
552 # things seen, not parsed:
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 }));
565 }
566
567 # remove the "," prefix we added to all headers above
568 substr $_, 0, 1, ""
569 for values %hdr;
570
571 # patch in all pseudo headers
572 %hdr = (%hdr, @pseudo);
573
574 # redirect handling
575 # microsoft and other shitheads don't give a shit for following standards,
576 # try to support some common forms of broken Location headers.
577 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
578 $hdr{location} =~ s/^\.\/+//;
579
580 my $url = "$rscheme://$uhost:$uport";
581
582 unless ($hdr{location} =~ s/^\///) {
583 $url .= $upath;
584 $url =~ s/\/[^\/]*$//;
585 }
586
587 $hdr{location} = "$url/$hdr{location}";
588 }
589
590 my $redirect;
591
592 if ($recurse) {
593 my $status = $hdr{Status};
594
595 # industry standard is to redirect POST as GET for
596 # 301, 302 and 303, in contrast to http/1.0 and 1.1.
597 # also, the UA should ask the user for 301 and 307 and POST,
598 # industry standard seems to be to simply follow.
599 # we go with the industry standard.
600 if ($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 $redirect = 1;
604 } elsif ($status == 307) {
605 $redirect = 1;
606 }
607 }
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 $_[0]->on_read (sub { });
738 }
739 }
740 }
741 });
742 };
743
744 # now handle proxy-CONNECT method 933 # now handle proxy-CONNECT method
745 if ($proxy && $uscheme eq "https") { 934 if ($proxy && $uscheme eq "https") {
746 # oh dear, we have to wrap it into a connect request 935 # oh dear, we have to wrap it into a connect request
747 936
748 # maybe re-use $uauthority with patched port? 937 # 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"); 938 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012\015\012");
750 $state{handle}->push_read (line => $qr_nlnl, sub { 939 $state{handle}->push_read (line => $qr_nlnl, sub {
751 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix 940 $_[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 })); 941 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
753 942
754 if ($2 == 200) { 943 if ($2 == 200) {
755 $rpath = $upath; 944 $rpath = $upath;
756 &$handle_actual_request; 945 $handle_actual_request->();
757 } else { 946 } else {
758 %state = (); 947 %state = ();
759 $cb->(undef, { Status => $2, Reason => $3, @pseudo }); 948 $cb->(undef, { @pseudo, Status => $2, Reason => $3 });
760 }
761 }); 949 }
762 } else {
763 &$handle_actual_request;
764 } 950 });
765 951 } else {
952 $handle_actual_request->();
766 }, 953 }
767 $arg{on_prepare} || sub { $timeout }
768 ); 954 };
955
956 my $tcp_connect = $arg{tcp_connect}
957 || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
958
959 $state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout });
769 }; 960 };
770 961
771 defined wantarray && AnyEvent::Util::guard { %state = () } 962 defined wantarray && AnyEvent::Util::guard { %state = () }
772} 963}
773 964
808string of the form C<http://host:port> (optionally C<https:...>), croaks 999string of the form C<http://host:port> (optionally C<https:...>), croaks
809otherwise. 1000otherwise.
810 1001
811To clear an already-set proxy, use C<undef>. 1002To clear an already-set proxy, use C<undef>.
812 1003
1004=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
1005
1006Remove all cookies from the cookie jar that have been expired. If
1007C<$session_end> is given and true, then additionally remove all session
1008cookies.
1009
1010You should call this function (with a true C<$session_end>) before you
1011save cookies to disk, and you should call this function after loading them
1012again. If you have a long-running program you can additonally call this
1013function from time to time.
1014
1015A cookie jar is initially an empty hash-reference that is managed by this
1016module. It's format is subject to change, but currently it is like this:
1017
1018The key C<version> has to contain C<1>, otherwise the hash gets
1019emptied. All other keys are hostnames or IP addresses pointing to
1020hash-references. The key for these inner hash references is the
1021server path for which this cookie is meant, and the values are again
1022hash-references. The keys of those hash-references is the cookie name, and
1023the value, you guessed it, is another hash-reference, this time with the
1024key-value pairs from the cookie, except for C<expires> and C<max-age>,
1025which have been replaced by a C<_expires> key that contains the cookie
1026expiry timestamp.
1027
1028Here is an example of a cookie jar with a single cookie, so you have a
1029chance of understanding the above paragraph:
1030
1031 {
1032 version => 1,
1033 "10.0.0.1" => {
1034 "/" => {
1035 "mythweb_id" => {
1036 _expires => 1293917923,
1037 value => "ooRung9dThee3ooyXooM1Ohm",
1038 },
1039 },
1040 },
1041 }
1042
813=item $date = AnyEvent::HTTP::format_date $timestamp 1043=item $date = AnyEvent::HTTP::format_date $timestamp
814 1044
815Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP 1045Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
816Date (RFC 2616). 1046Date (RFC 2616).
817 1047
818=item $timestamp = AnyEvent::HTTP::parse_date $date 1048=item $timestamp = AnyEvent::HTTP::parse_date $date
819 1049
820Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX 1050Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
1051bunch of minor variations of those, and returns the corresponding POSIX
821timestamp, or C<undef> if the date cannot be parsed. 1052timestamp, or C<undef> if the date cannot be parsed.
822 1053
823=item $AnyEvent::HTTP::MAX_RECURSE 1054=item $AnyEvent::HTTP::MAX_RECURSE
824 1055
825The default value for the C<recurse> request parameter (default: C<10>). 1056The default value for the C<recurse> request parameter (default: C<10>).
865sub parse_date($) { 1096sub parse_date($) {
866 my ($date) = @_; 1097 my ($date) = @_;
867 1098
868 my ($d, $m, $y, $H, $M, $S); 1099 my ($d, $m, $y, $H, $M, $S);
869 1100
870 if ($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$/) { 1101 if ($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$/) {
871 # RFC 822/1123, required by RFC 2616 1102 # RFC 822/1123, required by RFC 2616 (with " ")
1103 # cookie dates (with "-")
1104
872 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6); 1105 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
873 1106
874 } elsif ($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$/) { 1107 } elsif ($date =~ /^[A-Z][a-z][a-z]+, ([0-9][0-9]?)-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) GMT$/) {
875 # RFC 850 1108 # RFC 850
876 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6); 1109 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
877 1110
878 } elsif ($date =~ /^[A-Z][a-z][a-z] ([A-Z][a-z][a-z]) ([0-9 ][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) ([0-9][0-9][0-9][0-9])$/) { 1111 } elsif ($date =~ /^[A-Z][a-z][a-z]+ ([A-Z][a-z][a-z]) ([0-9 ]?[0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) ([0-9][0-9][0-9][0-9])$/) {
879 # ISO C's asctime 1112 # ISO C's asctime
880 ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5); 1113 ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
881 } 1114 }
882 # other formats fail in the loop below 1115 # other formats fail in the loop below
883 1116

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