… | |
… | |
41 | use strict; |
41 | use strict; |
42 | no warnings; |
42 | no warnings; |
43 | |
43 | |
44 | use Carp; |
44 | use Carp; |
45 | |
45 | |
46 | use AnyEvent (); |
46 | use AnyEvent 4.452 (); |
47 | use AnyEvent::Util (); |
47 | use AnyEvent::Util (); |
48 | use AnyEvent::Socket (); |
48 | use AnyEvent::Socket (); |
49 | use AnyEvent::Handle (); |
49 | use AnyEvent::Handle (); |
50 | |
50 | |
51 | use base Exporter::; |
51 | use base Exporter::; |
52 | |
52 | |
53 | our $VERSION = '1.05'; |
53 | our $VERSION = '1.12'; |
54 | |
54 | |
55 | our @EXPORT = qw(http_get http_post http_head http_request); |
55 | our @EXPORT = qw(http_get http_post http_head http_request); |
56 | |
56 | |
57 | our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
57 | our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
58 | our $MAX_RECURSE = 10; |
58 | our $MAX_RECURSE = 10; |
59 | our $MAX_PERSISTENT = 8; |
59 | our $MAX_PERSISTENT = 8; |
60 | our $PERSISTENT_TIMEOUT = 2; |
60 | our $PERSISTENT_TIMEOUT = 2; |
61 | our $TIMEOUT = 300; |
61 | our $TIMEOUT = 300; |
62 | |
62 | |
… | |
… | |
104 | headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason> |
104 | headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason> |
105 | contain the three parts of the HTTP Status-Line of the same name. The |
105 | contain the three parts of the HTTP Status-Line of the same name. The |
106 | pseudo-header C<URL> contains the original URL (which can differ from the |
106 | pseudo-header C<URL> contains the original URL (which can differ from the |
107 | requested URL when following redirects). |
107 | requested URL when following redirects). |
108 | |
108 | |
109 | If the server sends a header multiple lines, then their contents will be |
109 | If the server sends a header multiple times, then their contents will be |
110 | joined together with a command (C<,>). |
110 | joined together with a comma (C<,>), as per the HTTP spec. |
111 | |
111 | |
112 | If an internal error occurs, such as not being able to resolve a hostname, |
112 | If an internal error occurs, such as not being able to resolve a hostname, |
113 | then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599> |
113 | then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599> |
114 | and the C<Reason> pseudo-header will contain an error message. |
114 | and the C<Reason> pseudo-header will contain an error message. |
115 | |
115 | |
… | |
… | |
165 | based on the original netscape specification. |
165 | based on the original netscape specification. |
166 | |
166 | |
167 | The C<$hash_ref> must be an (initially empty) hash reference which will |
167 | The C<$hash_ref> must be an (initially empty) hash reference which will |
168 | get updated automatically. It is possible to save the cookie_jar to |
168 | get updated automatically. It is possible to save the cookie_jar to |
169 | persistent storage with something like JSON or Storable, but this is not |
169 | persistent storage with something like JSON or Storable, but this is not |
170 | recommended, as expire times are currently being ignored. |
170 | recommended, as expiry times are currently being ignored. |
171 | |
171 | |
172 | Note that this cookie implementation is not of very high quality, nor |
172 | Note that this cookie implementation is not of very high quality, nor |
173 | meant to be complete. If you want complete cookie management you have to |
173 | meant to be complete. If you want complete cookie management you have to |
174 | do that on your own. C<cookie_jar> is meant as a quick fix to get some |
174 | do that on your own. C<cookie_jar> is meant as a quick fix to get some |
175 | cookie-using sites working. Cookies are a privacy disaster, do not use |
175 | cookie-using sites working. Cookies are a privacy disaster, do not use |
176 | them unless required to. |
176 | them unless required to. |
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177 | |
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178 | =item tls_ctx => $scheme | $tls_ctx |
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179 | |
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180 | Specifies the AnyEvent::TLS context to be used for https connections. This |
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181 | parameter follows the same rules as the C<tls_ctx> parameter to |
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182 | L<AnyEvent::Handle>, but additionally, the two strings C<low> or |
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183 | C<high> can be specified, which give you a predefined low-security (no |
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184 | verification, highest compatibility) and high-security (CA and common-name |
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185 | verification) TLS context. |
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186 | |
|
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187 | The default for this option is C<low>, which could be interpreted as "give |
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188 | me the page, no matter what". |
177 | |
189 | |
178 | =back |
190 | =back |
179 | |
191 | |
180 | Example: make a simple HTTP GET request for http://www.nethype.de/ |
192 | Example: make a simple HTTP GET request for http://www.nethype.de/ |
181 | |
193 | |
… | |
… | |
237 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
249 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
238 | |
250 | |
239 | _slot_schedule $_[0]; |
251 | _slot_schedule $_[0]; |
240 | } |
252 | } |
241 | |
253 | |
|
|
254 | our $qr_nl = qr<\015?\012>; |
|
|
255 | our $qr_nlnl = qr<\015?\012\015?\012>; |
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256 | |
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257 | our $TLS_CTX_LOW = { cache => 1, dh => undef, sslv2 => 1 }; |
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258 | our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_cn => "https", dh => "skip4096" }; |
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259 | |
242 | sub http_request($$@) { |
260 | sub http_request($$@) { |
243 | my $cb = pop; |
261 | my $cb = pop; |
244 | my ($method, $url, %arg) = @_; |
262 | my ($method, $url, %arg) = @_; |
245 | |
263 | |
246 | my %hdr; |
264 | my %hdr; |
|
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265 | |
|
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266 | $arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" || !exists $arg{tls_ctx}; |
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267 | $arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high"; |
247 | |
268 | |
248 | $method = uc $method; |
269 | $method = uc $method; |
249 | |
270 | |
250 | if (my $hdr = $arg{headers}) { |
271 | if (my $hdr = $arg{headers}) { |
251 | while (my ($k, $v) = each %$hdr) { |
272 | while (my ($k, $v) = each %$hdr) { |
… | |
… | |
253 | } |
274 | } |
254 | } |
275 | } |
255 | |
276 | |
256 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
277 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
257 | |
278 | |
258 | return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url }) |
279 | return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url }) |
259 | if $recurse < 0; |
280 | if $recurse < 0; |
260 | |
281 | |
261 | my $proxy = $arg{proxy} || $PROXY; |
282 | my $proxy = $arg{proxy} || $PROXY; |
262 | my $timeout = $arg{timeout} || $TIMEOUT; |
283 | my $timeout = $arg{timeout} || $TIMEOUT; |
263 | |
284 | |
… | |
… | |
268 | |
289 | |
269 | $uscheme = lc $uscheme; |
290 | $uscheme = lc $uscheme; |
270 | |
291 | |
271 | my $uport = $uscheme eq "http" ? 80 |
292 | my $uport = $uscheme eq "http" ? 80 |
272 | : $uscheme eq "https" ? 443 |
293 | : $uscheme eq "https" ? 443 |
273 | : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url }); |
294 | : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported (not '$uscheme')", URL => $url }); |
274 | |
295 | |
275 | $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic |
296 | $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic |
276 | |
297 | |
277 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
298 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
278 | or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url }); |
299 | or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url }); |
279 | |
300 | |
280 | my $uhost = $1; |
301 | my $uhost = $1; |
281 | $uport = $2 if defined $2; |
302 | $uport = $2 if defined $2; |
282 | |
303 | |
283 | $uhost =~ s/^\[(.*)\]$/$1/; |
304 | $uhost =~ s/^\[(.*)\]$/$1/; |
… | |
… | |
317 | } |
338 | } |
318 | |
339 | |
319 | my ($rhost, $rport, $rscheme, $rpath); # request host, port, path |
340 | my ($rhost, $rport, $rscheme, $rpath); # request host, port, path |
320 | |
341 | |
321 | if ($proxy) { |
342 | if ($proxy) { |
322 | ($rhost, $rport, $rscheme, $rpath) = (@$proxy, $url); |
343 | ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy); |
323 | |
344 | |
324 | # don't support https requests over https-proxy transport, |
345 | # don't support https requests over https-proxy transport, |
325 | # can't be done with tls as spec'ed. |
346 | # can't be done with tls as spec'ed, unless you double-encrypt. |
326 | $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; |
347 | $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; |
327 | } else { |
348 | } else { |
328 | ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); |
349 | ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); |
329 | } |
350 | } |
330 | |
351 | |
… | |
… | |
338 | |
359 | |
339 | return unless $state{connect_guard}; |
360 | return unless $state{connect_guard}; |
340 | |
361 | |
341 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { |
362 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { |
342 | $state{fh} = shift |
363 | $state{fh} = shift |
343 | or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url }); |
364 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url })); |
|
|
365 | pop; # free memory, save a tree |
344 | |
366 | |
345 | delete $state{connect_guard}; # reduce memory usage, save a tree |
367 | return unless delete $state{connect_guard}; |
346 | |
368 | |
347 | # get handle |
369 | # get handle |
348 | $state{handle} = new AnyEvent::Handle |
370 | $state{handle} = new AnyEvent::Handle |
349 | fh => $state{fh}; |
371 | fh => $state{fh}, |
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372 | timeout => $timeout, |
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373 | peername => $rhost, |
|
|
374 | tls_ctx => $arg{tls_ctx}; |
350 | |
375 | |
351 | # limit the number of persistent connections |
376 | # limit the number of persistent connections |
|
|
377 | # keepalive not yet supported |
352 | if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
378 | if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
353 | ++$KA_COUNT{$_[1]}; |
379 | ++$KA_COUNT{$_[1]}; |
354 | $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; |
380 | $state{handle}{ka_count_guard} = AnyEvent::Util::guard { |
|
|
381 | --$KA_COUNT{$_[1]} |
|
|
382 | }; |
355 | $hdr{connection} = "keep-alive"; |
383 | $hdr{connection} = "keep-alive"; |
356 | delete $hdr{connection}; # keep-alive not yet supported |
|
|
357 | } else { |
384 | } else { |
358 | delete $hdr{connection}; |
385 | delete $hdr{connection}; |
359 | } |
386 | } |
360 | |
387 | |
361 | # (re-)configure handle |
388 | # (re-)configure handle |
362 | $state{handle}->timeout ($timeout); |
|
|
363 | $state{handle}->on_error (sub { |
389 | $state{handle}->on_error (sub { |
364 | my $errno = "$!"; |
|
|
365 | %state = (); |
390 | %state = (); |
366 | $cb->(undef, { Status => 599, Reason => $errno, URL => $url }); |
391 | $cb->(undef, { Status => 599, Reason => $_[2], URL => $url }); |
367 | }); |
392 | }); |
368 | $state{handle}->on_eof (sub { |
393 | $state{handle}->on_eof (sub { |
369 | %state = (); |
394 | %state = (); |
370 | $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url }); |
395 | $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url }); |
371 | }); |
396 | }); |
372 | |
397 | |
373 | $state{handle}->starttls ("connect") if $rscheme eq "https"; |
398 | $state{handle}->starttls ("connect") if $rscheme eq "https"; |
374 | |
399 | |
375 | # handle actual, non-tunneled, request |
400 | # handle actual, non-tunneled, request |
376 | my $handle_actual_request = sub { |
401 | my $handle_actual_request = sub { |
377 | # $state{handle}->starttls ("connect") if $uscheme eq "https"; |
402 | $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; |
378 | |
403 | |
379 | # send request |
404 | # send request |
380 | $state{handle}->push_write ( |
405 | $state{handle}->push_write ( |
381 | "$method $rpath HTTP/1.0\015\012" |
406 | "$method $rpath HTTP/1.0\015\012" |
382 | . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr) |
407 | . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr) |
… | |
… | |
385 | ); |
410 | ); |
386 | |
411 | |
387 | %hdr = (); # reduce memory usage, save a kitten |
412 | %hdr = (); # reduce memory usage, save a kitten |
388 | |
413 | |
389 | # status line |
414 | # status line |
390 | $state{handle}->push_read (line => qr/\015?\012/, sub { |
415 | $state{handle}->push_read (line => $qr_nl, sub { |
391 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
416 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
392 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url })); |
417 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url })); |
393 | |
418 | |
394 | my %hdr = ( # response headers |
419 | my %hdr = ( # response headers |
395 | HTTPVersion => ",$1", |
420 | HTTPVersion => ",$1", |
396 | Status => ",$2", |
421 | Status => ",$2", |
397 | Reason => ",$3", |
422 | Reason => ",$3", |
398 | URL => ",$url" |
423 | URL => ",$url" |
399 | ); |
424 | ); |
400 | |
425 | |
401 | # headers, could be optimized a bit |
426 | # headers, could be optimized a bit |
402 | $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { |
427 | $state{handle}->unshift_read (line => $qr_nlnl, sub { |
403 | for ("$_[1]\012") { |
428 | for ("$_[1]\012") { |
404 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
429 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
405 | |
430 | |
406 | # we support spaces in field names, as lotus domino |
431 | # things seen, not parsed: |
407 | # creates them (actually spaces around seperators |
432 | # p3pP="NON CUR OTPi OUR NOR UNI" |
408 | # are strictly allowed in http, they are a security issue). |
433 | |
409 | $hdr{lc $1} .= ",$2" |
434 | $hdr{lc $1} .= ",$2" |
410 | while /\G |
435 | while /\G |
411 | ([^:\000-\037]+): |
436 | ([^:\000-\037]+): |
412 | [\011\040]* |
437 | [\011\040]* |
413 | ((?: [^\012]+ | \012[\011\040] )*) |
438 | ((?: [^\012]+ | \012[\011\040] )*) |
414 | \012 |
439 | \012 |
415 | /gxc; |
440 | /gxc; |
416 | |
441 | |
417 | /\G$/ |
442 | /\G$/ |
418 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url })); |
443 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url })); |
419 | } |
444 | } |
420 | |
445 | |
421 | substr $_, 0, 1, "" |
446 | substr $_, 0, 1, "" |
422 | for values %hdr; |
447 | for values %hdr; |
423 | |
448 | |
424 | my $finish = sub { |
449 | my $finish = sub { |
425 | # TODO: use destroy method, when/if available |
|
|
426 | #$state{handle}->destroy; |
450 | $state{handle}->destroy; |
427 | $state{handle}->on_eof (undef); |
|
|
428 | $state{handle}->on_error (undef); |
|
|
429 | %state = (); |
451 | %state = (); |
430 | |
452 | |
431 | # set-cookie processing |
453 | # set-cookie processing |
432 | if ($arg{cookie_jar}) { |
454 | if ($arg{cookie_jar}) { |
433 | for ($hdr{"set-cookie"}) { |
455 | for ($hdr{"set-cookie"}) { |
… | |
… | |
494 | } |
516 | } |
495 | |
517 | |
496 | if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") { |
518 | if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") { |
497 | # apparently, mozilla et al. just change POST to GET here |
519 | # apparently, mozilla et al. just change POST to GET here |
498 | # more research is needed before we do the same |
520 | # more research is needed before we do the same |
499 | http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
521 | http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
500 | } elsif ($_[1]{Status} == 303 && $recurse) { |
522 | } elsif ($_[1]{Status} == 303 && $recurse) { |
501 | # even http/1.1 is unclear on how to mutate the method |
523 | # even http/1.1 is unclear on how to mutate the method |
502 | $method = "GET" unless $method eq "HEAD"; |
524 | $method = "GET" unless $method eq "HEAD"; |
503 | http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
525 | http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
504 | } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) { |
526 | } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) { |
… | |
… | |
522 | }); |
544 | }); |
523 | } else { |
545 | } else { |
524 | # too bad, need to read until we get an error or EOF, |
546 | # too bad, need to read until we get an error or EOF, |
525 | # no way to detect winged data. |
547 | # no way to detect winged data. |
526 | $_[0]->on_error (sub { |
548 | $_[0]->on_error (sub { |
|
|
549 | # delete ought to be more efficient, as we would have to make |
|
|
550 | # a copy otherwise as $_[0] gets destroyed. |
527 | $finish->($_[0]{rbuf}, \%hdr); |
551 | $finish->(delete $_[0]{rbuf}, \%hdr); |
528 | }); |
552 | }); |
529 | $_[0]->on_eof (undef); |
553 | $_[0]->on_eof (undef); |
530 | $_[0]->on_read (sub { }); |
554 | $_[0]->on_read (sub { }); |
531 | } |
555 | } |
532 | } |
556 | } |
… | |
… | |
538 | if ($proxy && $uscheme eq "https") { |
562 | if ($proxy && $uscheme eq "https") { |
539 | # oh dear, we have to wrap it into a connect request |
563 | # oh dear, we have to wrap it into a connect request |
540 | |
564 | |
541 | # maybe re-use $uauthority with patched port? |
565 | # maybe re-use $uauthority with patched port? |
542 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); |
566 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); |
543 | $state{handle}->push_read (line => qr/\015?\012\015?\012/, sub { |
567 | $state{handle}->push_read (line => $qr_nlnl, sub { |
544 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
568 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
545 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url })); |
569 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url })); |
546 | |
570 | |
547 | if ($2 == 200) { |
571 | if ($2 == 200) { |
548 | $rpath = $upath; |
572 | $rpath = $upath; |
549 | &$handle_actual_request; |
573 | &$handle_actual_request; |
550 | } else { |
574 | } else { |
… | |
… | |
596 | The default value for the C<recurse> request parameter (default: C<10>). |
620 | The default value for the C<recurse> request parameter (default: C<10>). |
597 | |
621 | |
598 | =item $AnyEvent::HTTP::USERAGENT |
622 | =item $AnyEvent::HTTP::USERAGENT |
599 | |
623 | |
600 | The default value for the C<User-Agent> header (the default is |
624 | The default value for the C<User-Agent> header (the default is |
601 | C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
625 | C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
602 | |
626 | |
603 | =item $AnyEvent::HTTP::MAX_PERSISTENT |
627 | =item $AnyEvent::HTTP::MAX_PERSISTENT |
604 | |
628 | |
605 | The maximum number of persistent connections to keep open (default: 8). |
629 | The maximum number of persistent connections to keep open (default: 8). |
606 | |
630 | |
… | |
… | |
636 | =head1 AUTHOR |
660 | =head1 AUTHOR |
637 | |
661 | |
638 | Marc Lehmann <schmorp@schmorp.de> |
662 | Marc Lehmann <schmorp@schmorp.de> |
639 | http://home.schmorp.de/ |
663 | http://home.schmorp.de/ |
640 | |
664 | |
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665 | With many thanks to Дмитрий Шалашов, who provided countless |
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666 | testcases and bugreports. |
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667 | |
641 | =cut |
668 | =cut |
642 | |
669 | |
643 | 1 |
670 | 1 |
644 | |
671 | |