… | |
… | |
15 | This module is an L<AnyEvent> user, you need to make sure that you use and |
15 | This module is an L<AnyEvent> user, you need to make sure that you use and |
16 | run a supported event loop. |
16 | run a supported event loop. |
17 | |
17 | |
18 | This module implements a simple, stateless and non-blocking HTTP |
18 | This module implements a simple, stateless and non-blocking HTTP |
19 | client. It supports GET, POST and other request methods, cookies and more, |
19 | client. It supports GET, POST and other request methods, cookies and more, |
20 | all on a very low level. It can follow redirects supports proxies and |
20 | all on a very low level. It can follow redirects, supports proxies, and |
21 | automatically limits the number of connections to the values specified in |
21 | automatically limits the number of connections to the values specified in |
22 | the RFC. |
22 | the RFC. |
23 | |
23 | |
24 | It should generally be a "good client" that is enough for most HTTP |
24 | It should generally be a "good client" that is enough for most HTTP |
25 | tasks. Simple tasks should be simple, but complex tasks should still be |
25 | tasks. Simple tasks should be simple, but complex tasks should still be |
… | |
… | |
36 | |
36 | |
37 | =cut |
37 | =cut |
38 | |
38 | |
39 | package AnyEvent::HTTP; |
39 | package AnyEvent::HTTP; |
40 | |
40 | |
41 | use strict; |
41 | use common::sense; |
42 | no warnings; |
|
|
43 | |
42 | |
44 | use Errno (); |
43 | use Errno (); |
45 | |
44 | |
46 | use AnyEvent 5.0 (); |
45 | use AnyEvent 5.0 (); |
47 | use AnyEvent::Util (); |
46 | use AnyEvent::Util (); |
48 | use AnyEvent::Handle (); |
47 | use AnyEvent::Handle (); |
49 | |
48 | |
50 | use base Exporter::; |
49 | use base Exporter::; |
51 | |
50 | |
52 | our $VERSION = '1.5'; |
51 | our $VERSION = 2.21; |
53 | |
52 | |
54 | our @EXPORT = qw(http_get http_post http_head http_request); |
53 | our @EXPORT = qw(http_get http_post http_head http_request); |
55 | |
54 | |
56 | our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
55 | our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
57 | our $MAX_RECURSE = 10; |
56 | our $MAX_RECURSE = 10; |
58 | our $MAX_PERSISTENT = 8; |
|
|
59 | our $PERSISTENT_TIMEOUT = 2; |
57 | our $PERSISTENT_TIMEOUT = 3; |
60 | our $TIMEOUT = 300; |
58 | our $TIMEOUT = 300; |
61 | |
59 | our $MAX_PER_HOST = 4; # changing this is evil |
62 | # changing these is evil |
|
|
63 | our $MAX_PERSISTENT_PER_HOST = 0; |
|
|
64 | our $MAX_PER_HOST = 4; |
|
|
65 | |
60 | |
66 | our $PROXY; |
61 | our $PROXY; |
67 | our $ACTIVE = 0; |
62 | our $ACTIVE = 0; |
68 | |
63 | |
69 | my %KA_COUNT; # number of open keep-alive connections per host |
64 | my %KA_CACHE; # indexed by uhost currently, points to [$handle...] array |
70 | my %CO_SLOT; # number of open connections, and wait queue, per host |
65 | my %CO_SLOT; # number of open connections, and wait queue, per host |
71 | |
66 | |
72 | =item http_get $url, key => value..., $cb->($data, $headers) |
67 | =item http_get $url, key => value..., $cb->($data, $headers) |
73 | |
68 | |
74 | Executes an HTTP-GET request. See the http_request function for details on |
69 | Executes an HTTP-GET request. See the http_request function for details on |
… | |
… | |
94 | C<http_request> returns a "cancellation guard" - you have to keep the |
89 | 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 |
90 | 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. |
91 | destroyed before the callback is called, the request will be cancelled. |
97 | |
92 | |
98 | The callback will be called with the response body data as first argument |
93 | 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 |
94 | (or C<undef> if an error occurred), and a hash-ref with response headers |
100 | (and trailers) as second argument. |
95 | (and trailers) as second argument. |
101 | |
96 | |
102 | All the headers in that hash are lowercased. In addition to the response |
97 | All the headers in that hash are lowercased. In addition to the response |
103 | headers, the "pseudo-headers" (uppercase to avoid clashing with possible |
98 | headers, the "pseudo-headers" (uppercase to avoid clashing with possible |
104 | response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the |
99 | response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the |
… | |
… | |
128 | C<590>-C<599> and the C<Reason> pseudo-header will contain an error |
123 | C<590>-C<599> and the C<Reason> pseudo-header will contain an error |
129 | message. Currently the following status codes are used: |
124 | message. Currently the following status codes are used: |
130 | |
125 | |
131 | =over 4 |
126 | =over 4 |
132 | |
127 | |
133 | =item 595 - errors during connection etsbalishment, proxy handshake. |
128 | =item 595 - errors during connection establishment, proxy handshake. |
134 | |
129 | |
135 | =item 596 - errors during TLS negotiation, request sending and header processing. |
130 | =item 596 - errors during TLS negotiation, request sending and header processing. |
136 | |
131 | |
137 | =item 597 - errors during body receiving or processing. |
132 | =item 597 - errors during body receiving or processing. |
138 | |
133 | |
… | |
… | |
159 | |
154 | |
160 | =over 4 |
155 | =over 4 |
161 | |
156 | |
162 | =item recurse => $count (default: $MAX_RECURSE) |
157 | =item recurse => $count (default: $MAX_RECURSE) |
163 | |
158 | |
164 | Whether to recurse requests or not, e.g. on redirects, authentication |
159 | Whether to recurse requests or not, e.g. on redirects, authentication and |
165 | retries and so on, and how often to do so. |
160 | other retries and so on, and how often to do so. |
|
|
161 | |
|
|
162 | Only redirects to http and https URLs are supported. While most common |
|
|
163 | redirection forms are handled entirely within this module, some require |
|
|
164 | the use of the optional L<URI> module. If it is required but missing, then |
|
|
165 | the request will fail with an error. |
166 | |
166 | |
167 | =item headers => hashref |
167 | =item headers => hashref |
168 | |
168 | |
169 | The request headers to use. Currently, C<http_request> may provide its own |
169 | The request headers to use. Currently, C<http_request> may provide its own |
170 | C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and |
170 | C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and |
171 | will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:> |
171 | will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:> |
172 | (this can be suppressed by using C<undef> for these headers in which case |
172 | (this can be suppressed by using C<undef> for these headers in which case |
173 | they won't be sent at all). |
173 | they won't be sent at all). |
174 | |
174 | |
|
|
175 | You really should provide your own C<User-Agent:> header value that is |
|
|
176 | appropriate for your program - I wouldn't be surprised if the default |
|
|
177 | AnyEvent string gets blocked by webservers sooner or later. |
|
|
178 | |
|
|
179 | Also, make sure that your headers names and values do not contain any |
|
|
180 | embedded newlines. |
|
|
181 | |
175 | =item timeout => $seconds |
182 | =item timeout => $seconds |
176 | |
183 | |
177 | The time-out to use for various stages - each connect attempt will reset |
184 | The time-out to use for various stages - each connect attempt will reset |
178 | the timeout, as will read or write activity, i.e. this is not an overall |
185 | the timeout, as will read or write activity, i.e. this is not an overall |
179 | timeout. |
186 | timeout. |
180 | |
187 | |
181 | Default timeout is 5 minutes. |
188 | Default timeout is 5 minutes. |
182 | |
189 | |
183 | =item proxy => [$host, $port[, $scheme]] or undef |
190 | =item proxy => [$host, $port[, $scheme]] or undef |
184 | |
191 | |
185 | Use the given http proxy for all requests. If not specified, then the |
192 | Use the given http proxy for all requests, or no proxy if C<undef> is |
186 | default proxy (as specified by C<$ENV{http_proxy}>) is used. |
193 | used. |
187 | |
194 | |
188 | C<$scheme> must be either missing, C<http> for HTTP or C<https> for |
195 | C<$scheme> must be either missing or must be C<http> for HTTP. |
189 | HTTPS. |
196 | |
|
|
197 | If not specified, then the default proxy is used (see |
|
|
198 | C<AnyEvent::HTTP::set_proxy>). |
190 | |
199 | |
191 | =item body => $string |
200 | =item body => $string |
192 | |
201 | |
193 | The request body, usually empty. Will be sent as-is (future versions of |
202 | The request body, usually empty. Will be sent as-is (future versions of |
194 | this module might offer more options). |
203 | this module might offer more options). |
… | |
… | |
196 | =item cookie_jar => $hash_ref |
205 | =item cookie_jar => $hash_ref |
197 | |
206 | |
198 | Passing this parameter enables (simplified) cookie-processing, loosely |
207 | Passing this parameter enables (simplified) cookie-processing, loosely |
199 | based on the original netscape specification. |
208 | based on the original netscape specification. |
200 | |
209 | |
201 | The C<$hash_ref> must be an (initially empty) hash reference which will |
210 | The C<$hash_ref> must be an (initially empty) hash reference which |
202 | get updated automatically. It is possible to save the cookie jar to |
211 | will get updated automatically. It is possible to save the cookie jar |
203 | persistent storage with something like JSON or Storable, but this is not |
212 | to persistent storage with something like JSON or Storable - see the |
204 | recommended, as session-only cookies might survive longer than expected. |
213 | C<AnyEvent::HTTP::cookie_jar_expire> function if you wish to remove |
|
|
214 | expired or session-only cookies, and also for documentation on the format |
|
|
215 | of the cookie jar. |
205 | |
216 | |
206 | Note that this cookie implementation is not meant to be complete. If |
217 | Note that this cookie implementation is not meant to be complete. If |
207 | you want complete cookie management you have to do that on your |
218 | you want complete cookie management you have to do that on your |
208 | own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites |
219 | own. C<cookie_jar> is meant as a quick fix to get most cookie-using sites |
209 | working. Cookies are a privacy disaster, do not use them unless required |
220 | working. Cookies are a privacy disaster, do not use them unless required |
210 | to. |
221 | to. |
211 | |
222 | |
212 | When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:> |
223 | 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 |
224 | headers will be set and handled by this module, otherwise they will be |
… | |
… | |
223 | verification) TLS context. |
234 | verification) TLS context. |
224 | |
235 | |
225 | The default for this option is C<low>, which could be interpreted as "give |
236 | The default for this option is C<low>, which could be interpreted as "give |
226 | me the page, no matter what". |
237 | me the page, no matter what". |
227 | |
238 | |
|
|
239 | See also the C<sessionid> parameter. |
|
|
240 | |
|
|
241 | =item session => $string |
|
|
242 | |
|
|
243 | The module might reuse connections to the same host internally. Sometimes |
|
|
244 | (e.g. when using TLS), you do not want to reuse connections from other |
|
|
245 | sessions. This can be achieved by setting this parameter to some unique |
|
|
246 | ID (such as the address of an object storing your state data, or the TLS |
|
|
247 | context) - only connections using the same unique ID will be reused. |
|
|
248 | |
228 | =item on_prepare => $callback->($fh) |
249 | =item on_prepare => $callback->($fh) |
229 | |
250 | |
230 | In rare cases you need to "tune" the socket before it is used to |
251 | In rare cases you need to "tune" the socket before it is used to |
231 | connect (for exmaple, to bind it on a given IP address). This parameter |
252 | connect (for example, to bind it on a given IP address). This parameter |
232 | overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect> |
253 | overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect> |
233 | and behaves exactly the same way (e.g. it has to provide a |
254 | and behaves exactly the same way (e.g. it has to provide a |
234 | timeout). See the description for the C<$prepare_cb> argument of |
255 | timeout). See the description for the C<$prepare_cb> argument of |
235 | C<AnyEvent::Socket::tcp_connect> for details. |
256 | C<AnyEvent::Socket::tcp_connect> for details. |
236 | |
257 | |
… | |
… | |
301 | called. Instead of the C<$body> argument containing the body data, the |
322 | called. Instead of the C<$body> argument containing the body data, the |
302 | callback will receive the L<AnyEvent::Handle> object associated with the |
323 | callback will receive the L<AnyEvent::Handle> object associated with the |
303 | connection. In error cases, C<undef> will be passed. When there is no body |
324 | connection. In error cases, C<undef> will be passed. When there is no body |
304 | (e.g. status C<304>), the empty string will be passed. |
325 | (e.g. status C<304>), the empty string will be passed. |
305 | |
326 | |
306 | The handle object might or might not be in TLS mode, might be connected to |
327 | The handle object might or might not be in TLS mode, might be connected |
307 | a proxy, be a persistent connection etc., and configured in unspecified |
328 | to a proxy, be a persistent connection, use chunked transfer encoding |
308 | ways. The user is responsible for this handle (it will not be used by this |
329 | etc., and configured in unspecified ways. The user is responsible for this |
309 | module anymore). |
330 | handle (it will not be used by this module anymore). |
310 | |
331 | |
311 | This is useful with some push-type services, where, after the initial |
332 | This is useful with some push-type services, where, after the initial |
312 | headers, an interactive protocol is used (typical example would be the |
333 | headers, an interactive protocol is used (typical example would be the |
313 | push-style twitter API which starts a JSON/XML stream). |
334 | push-style twitter API which starts a JSON/XML stream). |
314 | |
335 | |
315 | If you think you need this, first have a look at C<on_body>, to see if |
336 | If you think you need this, first have a look at C<on_body>, to see if |
316 | that doesn't solve your problem in a better way. |
337 | that doesn't solve your problem in a better way. |
|
|
338 | |
|
|
339 | =item persistent => $boolean |
|
|
340 | |
|
|
341 | Try to create/reuse a persistent connection. When this flag is set |
|
|
342 | (default: true for idempotent requests, false for all others), then |
|
|
343 | C<http_request> tries to re-use an existing (previously-created) |
|
|
344 | persistent connection to the host and, failing that, tries to create a new |
|
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345 | one. |
|
|
346 | |
|
|
347 | Requests failing in certain ways will be automatically retried once, which |
|
|
348 | is dangerous for non-idempotent requests, which is why it defaults to off |
|
|
349 | for them. The reason for this is because the bozos who designed HTTP/1.1 |
|
|
350 | made it impossible to distinguish between a fatal error and a normal |
|
|
351 | connection timeout, so you never know whether there was a problem with |
|
|
352 | your request or not. |
|
|
353 | |
|
|
354 | When reusing an existent connection, many parameters (such as TLS context) |
|
|
355 | will be ignored. See the C<session> parameter for a workaround. |
|
|
356 | |
|
|
357 | =item keepalive => $boolean |
|
|
358 | |
|
|
359 | Only used when C<persistent> is also true. This parameter decides whether |
|
|
360 | C<http_request> tries to handshake a HTTP/1.0-style keep-alive connection |
|
|
361 | (as opposed to only a HTTP/1.1 persistent connection). |
|
|
362 | |
|
|
363 | The default is true, except when using a proxy, in which case it defaults |
|
|
364 | to false, as HTTP/1.0 proxies cannot support this in a meaningful way. |
|
|
365 | |
|
|
366 | =item handle_params => { key => value ... } |
|
|
367 | |
|
|
368 | The key-value pairs in this hash will be passed to any L<AnyEvent::Handle> |
|
|
369 | constructor that is called - not all requests will create a handle, and |
|
|
370 | sometimes more than one is created, so this parameter is only good for |
|
|
371 | setting hints. |
|
|
372 | |
|
|
373 | Example: set the maximum read size to 4096, to potentially conserve memory |
|
|
374 | at the cost of speed. |
|
|
375 | |
|
|
376 | handle_params => { |
|
|
377 | max_read_size => 4096, |
|
|
378 | }, |
317 | |
379 | |
318 | =back |
380 | =back |
319 | |
381 | |
320 | Example: do a simple HTTP GET request for http://www.nethype.de/ and print |
382 | Example: do a simple HTTP GET request for http://www.nethype.de/ and print |
321 | the response body. |
383 | the response body. |
… | |
… | |
327 | |
389 | |
328 | Example: do a HTTP HEAD request on https://www.google.com/, use a |
390 | Example: do a HTTP HEAD request on https://www.google.com/, use a |
329 | timeout of 30 seconds. |
391 | timeout of 30 seconds. |
330 | |
392 | |
331 | http_request |
393 | http_request |
332 | GET => "https://www.google.com", |
394 | HEAD => "https://www.google.com", |
|
|
395 | headers => { "user-agent" => "MySearchClient 1.0" }, |
333 | timeout => 30, |
396 | timeout => 30, |
334 | sub { |
397 | sub { |
335 | my ($body, $hdr) = @_; |
398 | my ($body, $hdr) = @_; |
336 | use Data::Dumper; |
399 | use Data::Dumper; |
337 | print Dumper $hdr; |
400 | print Dumper $hdr; |
… | |
… | |
347 | }; |
410 | }; |
348 | |
411 | |
349 | undef $request; |
412 | undef $request; |
350 | |
413 | |
351 | =cut |
414 | =cut |
|
|
415 | |
|
|
416 | ############################################################################# |
|
|
417 | # wait queue/slots |
352 | |
418 | |
353 | sub _slot_schedule; |
419 | sub _slot_schedule; |
354 | sub _slot_schedule($) { |
420 | sub _slot_schedule($) { |
355 | my $host = shift; |
421 | my $host = shift; |
356 | |
422 | |
… | |
… | |
378 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
444 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
379 | |
445 | |
380 | _slot_schedule $_[0]; |
446 | _slot_schedule $_[0]; |
381 | } |
447 | } |
382 | |
448 | |
|
|
449 | ############################################################################# |
|
|
450 | # cookie handling |
|
|
451 | |
|
|
452 | # expire cookies |
|
|
453 | sub cookie_jar_expire($;$) { |
|
|
454 | my ($jar, $session_end) = @_; |
|
|
455 | |
|
|
456 | %$jar = () if $jar->{version} != 1; |
|
|
457 | |
|
|
458 | my $anow = AE::now; |
|
|
459 | |
|
|
460 | while (my ($chost, $paths) = each %$jar) { |
|
|
461 | next unless ref $paths; |
|
|
462 | |
|
|
463 | while (my ($cpath, $cookies) = each %$paths) { |
|
|
464 | while (my ($cookie, $kv) = each %$cookies) { |
|
|
465 | if (exists $kv->{_expires}) { |
|
|
466 | delete $cookies->{$cookie} |
|
|
467 | if $anow > $kv->{_expires}; |
|
|
468 | } elsif ($session_end) { |
|
|
469 | delete $cookies->{$cookie}; |
|
|
470 | } |
|
|
471 | } |
|
|
472 | |
|
|
473 | delete $paths->{$cpath} |
|
|
474 | unless %$cookies; |
|
|
475 | } |
|
|
476 | |
|
|
477 | delete $jar->{$chost} |
|
|
478 | unless %$paths; |
|
|
479 | } |
|
|
480 | } |
|
|
481 | |
383 | # extract cookies from jar |
482 | # extract cookies from jar |
384 | sub cookie_jar_extract($$$$) { |
483 | sub cookie_jar_extract($$$$) { |
385 | my ($jar, $uscheme, $uhost, $upath) = @_; |
484 | my ($jar, $scheme, $host, $path) = @_; |
386 | |
485 | |
387 | %$jar = () if $jar->{version} != 1; |
486 | %$jar = () if $jar->{version} != 1; |
388 | |
487 | |
389 | my @cookies; |
488 | my @cookies; |
390 | |
489 | |
391 | while (my ($chost, $paths) = each %$jar) { |
490 | while (my ($chost, $paths) = each %$jar) { |
392 | next unless ref $paths; |
491 | next unless ref $paths; |
393 | |
492 | |
394 | if ($chost =~ /^\./) { |
493 | if ($chost =~ /^\./) { |
395 | next unless $chost eq substr $uhost, -length $chost; |
494 | next unless $chost eq substr $host, -length $chost; |
396 | } elsif ($chost =~ /\./) { |
495 | } elsif ($chost =~ /\./) { |
397 | next unless $chost eq $uhost; |
496 | next unless $chost eq $host; |
398 | } else { |
497 | } else { |
399 | next; |
498 | next; |
400 | } |
499 | } |
401 | |
500 | |
402 | while (my ($cpath, $cookies) = each %$paths) { |
501 | while (my ($cpath, $cookies) = each %$paths) { |
403 | next unless $cpath eq substr $upath, 0, length $cpath; |
502 | next unless $cpath eq substr $path, 0, length $cpath; |
404 | |
503 | |
405 | while (my ($cookie, $kv) = each %$cookies) { |
504 | while (my ($cookie, $kv) = each %$cookies) { |
406 | next if $uscheme ne "https" && exists $kv->{secure}; |
505 | next if $scheme ne "https" && exists $kv->{secure}; |
407 | |
506 | |
408 | if (exists $kv->{expires}) { |
507 | if (exists $kv->{_expires} and AE::now > $kv->{_expires}) { |
409 | if (AE::now > parse_date ($kv->{expires})) { |
|
|
410 | delete $cookies->{$cookie}; |
508 | delete $cookies->{$cookie}; |
411 | next; |
509 | next; |
412 | } |
|
|
413 | } |
510 | } |
414 | |
511 | |
415 | my $value = $kv->{value}; |
512 | my $value = $kv->{value}; |
416 | |
513 | |
417 | if ($value =~ /[=;,[:space:]]/) { |
514 | if ($value =~ /[=;,[:space:]]/) { |
… | |
… | |
426 | |
523 | |
427 | \@cookies |
524 | \@cookies |
428 | } |
525 | } |
429 | |
526 | |
430 | # parse set_cookie header into jar |
527 | # parse set_cookie header into jar |
431 | sub cookie_jar_set_cookie($$$) { |
528 | sub cookie_jar_set_cookie($$$$) { |
432 | my ($jar, $set_cookie, $uhost) = @_; |
529 | my ($jar, $set_cookie, $host, $date) = @_; |
|
|
530 | |
|
|
531 | my $anow = int AE::now; |
|
|
532 | my $snow; # server-now |
433 | |
533 | |
434 | for ($set_cookie) { |
534 | for ($set_cookie) { |
435 | # parse NAME=VALUE |
535 | # parse NAME=VALUE |
436 | my @kv; |
536 | my @kv; |
437 | |
537 | |
|
|
538 | # expires is not http-compliant in the original cookie-spec, |
|
|
539 | # we support the official date format and some extensions |
438 | while ( |
540 | while ( |
439 | m{ |
541 | m{ |
440 | \G\s* |
542 | \G\s* |
441 | (?: |
543 | (?: |
442 | expires \s*=\s* ([A-Z][a-z][a-z],\ [^,;]+) |
544 | expires \s*=\s* ([A-Z][a-z][a-z]+,\ [^,;]+) |
443 | | ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) ) |
545 | | ([^=;,[:space:]]+) (?: \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^;,[:space:]]*) ) )? |
444 | ) |
546 | ) |
445 | }gcxsi |
547 | }gcxsi |
446 | ) { |
548 | ) { |
447 | my $name = $2; |
549 | my $name = $2; |
448 | my $value = $4; |
550 | my $value = $4; |
449 | |
551 | |
450 | unless (defined $name) { |
552 | if (defined $1) { |
451 | # expires |
553 | # expires |
452 | $name = "expires"; |
554 | $name = "expires"; |
453 | $value = $1; |
555 | $value = $1; |
454 | } elsif (!defined $value) { |
556 | } elsif (defined $3) { |
455 | # quoted |
557 | # quoted |
456 | $value = $3; |
558 | $value = $3; |
457 | $value =~ s/\\(.)/$1/gs; |
559 | $value =~ s/\\(.)/$1/gs; |
458 | } |
560 | } |
459 | |
561 | |
460 | push @kv, lc $name, $value; |
562 | push @kv, @kv ? lc $name : $name, $value; |
461 | |
563 | |
462 | last unless /\G\s*;/gc; |
564 | last unless /\G\s*;/gc; |
463 | } |
565 | } |
464 | |
566 | |
465 | last unless @kv; |
567 | last unless @kv; |
466 | |
568 | |
467 | my $name = shift @kv; |
569 | my $name = shift @kv; |
468 | my %kv = (value => shift @kv, @kv); |
570 | my %kv = (value => shift @kv, @kv); |
469 | |
571 | |
470 | $kv{expires} ||= format_date (AE::now + $kv{"max-age"}) |
|
|
471 | if exists $kv{"max-age"}; |
572 | if (exists $kv{"max-age"}) { |
|
|
573 | $kv{_expires} = $anow + delete $kv{"max-age"}; |
|
|
574 | } elsif (exists $kv{expires}) { |
|
|
575 | $snow ||= parse_date ($date) || $anow; |
|
|
576 | $kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow); |
|
|
577 | } else { |
|
|
578 | delete $kv{_expires}; |
|
|
579 | } |
472 | |
580 | |
473 | my $cdom; |
581 | my $cdom; |
474 | my $cpath = (delete $kv{path}) || "/"; |
582 | my $cpath = (delete $kv{path}) || "/"; |
475 | |
583 | |
476 | if (exists $kv{domain}) { |
584 | if (exists $kv{domain}) { |
… | |
… | |
482 | |
590 | |
483 | # this is not rfc-like and not netscape-like. go figure. |
591 | # this is not rfc-like and not netscape-like. go figure. |
484 | my $ndots = $cdom =~ y/.//; |
592 | my $ndots = $cdom =~ y/.//; |
485 | next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2); |
593 | next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2); |
486 | } else { |
594 | } else { |
487 | $cdom = $uhost; |
595 | $cdom = $host; |
488 | } |
596 | } |
489 | |
597 | |
490 | # store it |
598 | # store it |
491 | $jar->{version} = 1; |
599 | $jar->{version} = 1; |
492 | $jar->{$cdom}{$cpath}{$name} = \%kv; |
600 | $jar->{lc $cdom}{$cpath}{$name} = \%kv; |
493 | |
601 | |
494 | redo if /\G\s*,/gc; |
602 | redo if /\G\s*,/gc; |
495 | } |
603 | } |
496 | } |
604 | } |
497 | |
605 | |
|
|
606 | ############################################################################# |
|
|
607 | # keepalive/persistent connection cache |
|
|
608 | |
|
|
609 | # fetch a connection from the keepalive cache |
|
|
610 | sub ka_fetch($) { |
|
|
611 | my $ka_key = shift; |
|
|
612 | |
|
|
613 | my $hdl = pop @{ $KA_CACHE{$ka_key} }; # currently we reuse the MOST RECENTLY USED connection |
|
|
614 | delete $KA_CACHE{$ka_key} |
|
|
615 | unless @{ $KA_CACHE{$ka_key} }; |
|
|
616 | |
|
|
617 | $hdl |
|
|
618 | } |
|
|
619 | |
|
|
620 | sub ka_store($$) { |
|
|
621 | my ($ka_key, $hdl) = @_; |
|
|
622 | |
|
|
623 | my $kaa = $KA_CACHE{$ka_key} ||= []; |
|
|
624 | |
|
|
625 | my $destroy = sub { |
|
|
626 | my @ka = grep $_ != $hdl, @{ $KA_CACHE{$ka_key} }; |
|
|
627 | |
|
|
628 | $hdl->destroy; |
|
|
629 | |
|
|
630 | @ka |
|
|
631 | ? $KA_CACHE{$ka_key} = \@ka |
|
|
632 | : delete $KA_CACHE{$ka_key}; |
|
|
633 | }; |
|
|
634 | |
|
|
635 | # on error etc., destroy |
|
|
636 | $hdl->on_error ($destroy); |
|
|
637 | $hdl->on_eof ($destroy); |
|
|
638 | $hdl->on_read ($destroy); |
|
|
639 | $hdl->timeout ($PERSISTENT_TIMEOUT); |
|
|
640 | |
|
|
641 | push @$kaa, $hdl; |
|
|
642 | shift @$kaa while @$kaa > $MAX_PER_HOST; |
|
|
643 | } |
|
|
644 | |
|
|
645 | ############################################################################# |
|
|
646 | # utilities |
|
|
647 | |
498 | # continue to parse $_ for headers and place them into the arg |
648 | # continue to parse $_ for headers and place them into the arg |
499 | sub parse_hdr() { |
649 | sub _parse_hdr() { |
500 | my %hdr; |
650 | my %hdr; |
501 | |
651 | |
502 | # things seen, not parsed: |
652 | # things seen, not parsed: |
503 | # p3pP="NON CUR OTPi OUR NOR UNI" |
653 | # p3pP="NON CUR OTPi OUR NOR UNI" |
504 | |
654 | |
… | |
… | |
518 | for values %hdr; |
668 | for values %hdr; |
519 | |
669 | |
520 | \%hdr |
670 | \%hdr |
521 | } |
671 | } |
522 | |
672 | |
|
|
673 | ############################################################################# |
|
|
674 | # http_get |
|
|
675 | |
523 | our $qr_nlnl = qr{(?<![^\012])\015?\012}; |
676 | our $qr_nlnl = qr{(?<![^\012])\015?\012}; |
524 | |
677 | |
525 | our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; |
678 | our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; |
526 | our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; |
679 | our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; |
|
|
680 | |
|
|
681 | # maybe it should just become a normal object :/ |
|
|
682 | |
|
|
683 | sub _destroy_state(\%) { |
|
|
684 | my ($state) = @_; |
|
|
685 | |
|
|
686 | $state->{handle}->destroy if $state->{handle}; |
|
|
687 | %$state = (); |
|
|
688 | } |
|
|
689 | |
|
|
690 | sub _error(\%$$) { |
|
|
691 | my ($state, $cb, $hdr) = @_; |
|
|
692 | |
|
|
693 | &_destroy_state ($state); |
|
|
694 | |
|
|
695 | $cb->(undef, $hdr); |
|
|
696 | () |
|
|
697 | } |
|
|
698 | |
|
|
699 | our %IDEMPOTENT = ( |
|
|
700 | DELETE => 1, |
|
|
701 | GET => 1, |
|
|
702 | HEAD => 1, |
|
|
703 | OPTIONS => 1, |
|
|
704 | PUT => 1, |
|
|
705 | TRACE => 1, |
|
|
706 | |
|
|
707 | ACL => 1, |
|
|
708 | "BASELINE-CONTROL" => 1, |
|
|
709 | BIND => 1, |
|
|
710 | CHECKIN => 1, |
|
|
711 | CHECKOUT => 1, |
|
|
712 | COPY => 1, |
|
|
713 | LABEL => 1, |
|
|
714 | LINK => 1, |
|
|
715 | MERGE => 1, |
|
|
716 | MKACTIVITY => 1, |
|
|
717 | MKCALENDAR => 1, |
|
|
718 | MKCOL => 1, |
|
|
719 | MKREDIRECTREF => 1, |
|
|
720 | MKWORKSPACE => 1, |
|
|
721 | MOVE => 1, |
|
|
722 | ORDERPATCH => 1, |
|
|
723 | PROPFIND => 1, |
|
|
724 | PROPPATCH => 1, |
|
|
725 | REBIND => 1, |
|
|
726 | REPORT => 1, |
|
|
727 | SEARCH => 1, |
|
|
728 | UNBIND => 1, |
|
|
729 | UNCHECKOUT => 1, |
|
|
730 | UNLINK => 1, |
|
|
731 | UNLOCK => 1, |
|
|
732 | UPDATE => 1, |
|
|
733 | UPDATEREDIRECTREF => 1, |
|
|
734 | "VERSION-CONTROL" => 1, |
|
|
735 | ); |
527 | |
736 | |
528 | sub http_request($$@) { |
737 | sub http_request($$@) { |
529 | my $cb = pop; |
738 | my $cb = pop; |
530 | my ($method, $url, %arg) = @_; |
739 | my ($method, $url, %arg) = @_; |
531 | |
740 | |
… | |
… | |
549 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
758 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
550 | |
759 | |
551 | return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" }) |
760 | return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" }) |
552 | if $recurse < 0; |
761 | if $recurse < 0; |
553 | |
762 | |
554 | my $proxy = $arg{proxy} || $PROXY; |
763 | my $proxy = exists $arg{proxy} ? $arg{proxy} : $PROXY; |
555 | my $timeout = $arg{timeout} || $TIMEOUT; |
764 | my $timeout = $arg{timeout} || $TIMEOUT; |
556 | |
765 | |
557 | my ($uscheme, $uauthority, $upath, $query, $fragment) = |
766 | my ($uscheme, $uauthority, $upath, $query, undef) = # ignore fragment |
558 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:(\?[^#]*))?(?:#(.*))?|; |
767 | $url =~ m|^([^:]+):(?://([^/?#]*))?([^?#]*)(?:(\?[^#]*))?(?:#(.*))?$|; |
559 | |
768 | |
560 | $uscheme = lc $uscheme; |
769 | $uscheme = lc $uscheme; |
561 | |
770 | |
562 | my $uport = $uscheme eq "http" ? 80 |
771 | my $uport = $uscheme eq "http" ? 80 |
563 | : $uscheme eq "https" ? 443 |
772 | : $uscheme eq "https" ? 443 |
564 | : return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" }); |
773 | : return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" }); |
565 | |
774 | |
566 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
775 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
567 | or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" }); |
776 | or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" }); |
568 | |
777 | |
569 | my $uhost = $1; |
778 | my $uhost = lc $1; |
570 | $uport = $2 if defined $2; |
779 | $uport = $2 if defined $2; |
571 | |
780 | |
572 | $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost" |
781 | $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost" |
573 | unless exists $hdr{host}; |
782 | unless exists $hdr{host}; |
574 | |
783 | |
… | |
… | |
593 | $rscheme = "http" unless defined $rscheme; |
802 | $rscheme = "http" unless defined $rscheme; |
594 | |
803 | |
595 | # don't support https requests over https-proxy transport, |
804 | # don't support https requests over https-proxy transport, |
596 | # can't be done with tls as spec'ed, unless you double-encrypt. |
805 | # can't be done with tls as spec'ed, unless you double-encrypt. |
597 | $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; |
806 | $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; |
|
|
807 | |
|
|
808 | $rhost = lc $rhost; |
|
|
809 | $rscheme = lc $rscheme; |
598 | } else { |
810 | } else { |
599 | ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); |
811 | ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); |
600 | } |
812 | } |
601 | |
813 | |
602 | # leave out fragment and query string, just a heuristic |
814 | # leave out fragment and query string, just a heuristic |
… | |
… | |
604 | $hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"}; |
816 | $hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"}; |
605 | |
817 | |
606 | $hdr{"content-length"} = length $arg{body} |
818 | $hdr{"content-length"} = length $arg{body} |
607 | if length $arg{body} || $method ne "GET"; |
819 | if length $arg{body} || $method ne "GET"; |
608 | |
820 | |
609 | $hdr{connection} = "close TE"; #1.1 |
821 | my $idempotent = $IDEMPOTENT{$method}; |
|
|
822 | |
|
|
823 | # default value for keepalive is true iff the request is for an idempotent method |
|
|
824 | my $persistent = exists $arg{persistent} ? !!$arg{persistent} : $idempotent; |
|
|
825 | my $keepalive = exists $arg{keepalive} ? !!$arg{keepalive} : !$proxy; |
|
|
826 | my $was_persistent; # true if this is actually a recycled connection |
|
|
827 | |
|
|
828 | # the key to use in the keepalive cache |
|
|
829 | my $ka_key = "$uscheme\x00$uhost\x00$uport\x00$arg{sessionid}"; |
|
|
830 | |
|
|
831 | $hdr{connection} = ($persistent ? $keepalive ? "keep-alive, " : "" : "close, ") . "Te"; #1.1 |
610 | $hdr{te} = "trailers" unless exists $hdr{te}; #1.1 |
832 | $hdr{te} = "trailers" unless exists $hdr{te}; #1.1 |
611 | |
833 | |
612 | my %state = (connect_guard => 1); |
834 | my %state = (connect_guard => 1); |
|
|
835 | |
|
|
836 | my $ae_error = 595; # connecting |
|
|
837 | |
|
|
838 | # handle actual, non-tunneled, request |
|
|
839 | my $handle_actual_request = sub { |
|
|
840 | $ae_error = 596; # request phase |
|
|
841 | |
|
|
842 | my $hdl = $state{handle}; |
|
|
843 | |
|
|
844 | $hdl->starttls ("connect") if $uscheme eq "https" && !exists $hdl->{tls}; |
|
|
845 | |
|
|
846 | # send request |
|
|
847 | $hdl->push_write ( |
|
|
848 | "$method $rpath HTTP/1.1\015\012" |
|
|
849 | . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr) |
|
|
850 | . "\015\012" |
|
|
851 | . $arg{body} |
|
|
852 | ); |
|
|
853 | |
|
|
854 | # return if error occurred during push_write() |
|
|
855 | return unless %state; |
|
|
856 | |
|
|
857 | # reduce memory usage, save a kitten, also re-use it for the response headers. |
|
|
858 | %hdr = (); |
|
|
859 | |
|
|
860 | # status line and headers |
|
|
861 | $state{read_response} = sub { |
|
|
862 | return unless %state; |
|
|
863 | |
|
|
864 | for ("$_[1]") { |
|
|
865 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
|
|
866 | |
|
|
867 | /^HTTP\/0*([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/gxci |
|
|
868 | or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Invalid server response" }; |
|
|
869 | |
|
|
870 | # 100 Continue handling |
|
|
871 | # should not happen as we don't send expect: 100-continue, |
|
|
872 | # but we handle it just in case. |
|
|
873 | # since we send the request body regardless, if we get an error |
|
|
874 | # we are out of-sync, which we currently do NOT handle correctly. |
|
|
875 | return $state{handle}->push_read (line => $qr_nlnl, $state{read_response}) |
|
|
876 | if $2 eq 100; |
|
|
877 | |
|
|
878 | push @pseudo, |
|
|
879 | HTTPVersion => $1, |
|
|
880 | Status => $2, |
|
|
881 | Reason => $3, |
|
|
882 | ; |
|
|
883 | |
|
|
884 | my $hdr = _parse_hdr |
|
|
885 | or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Garbled response headers" }; |
|
|
886 | |
|
|
887 | %hdr = (%$hdr, @pseudo); |
|
|
888 | } |
|
|
889 | |
|
|
890 | # redirect handling |
|
|
891 | # relative uri handling forced by microsoft and other shitheads. |
|
|
892 | # we give our best and fall back to URI if available. |
|
|
893 | if (exists $hdr{location}) { |
|
|
894 | my $loc = $hdr{location}; |
|
|
895 | |
|
|
896 | if ($loc =~ m%^//%) { # // |
|
|
897 | $loc = "$rscheme:$loc"; |
|
|
898 | |
|
|
899 | } elsif ($loc eq "") { |
|
|
900 | $loc = $url; |
|
|
901 | |
|
|
902 | } elsif ($loc !~ /^(?: $ | [^:\/?\#]+ : )/x) { # anything "simple" |
|
|
903 | $loc =~ s/^\.\/+//; |
|
|
904 | |
|
|
905 | if ($loc !~ m%^[.?#]%) { |
|
|
906 | my $prefix = "$rscheme://$uhost:$uport"; |
|
|
907 | |
|
|
908 | unless ($loc =~ s/^\///) { |
|
|
909 | $prefix .= $upath; |
|
|
910 | $prefix =~ s/\/[^\/]*$//; |
|
|
911 | } |
|
|
912 | |
|
|
913 | $loc = "$prefix/$loc"; |
|
|
914 | |
|
|
915 | } elsif (eval { require URI }) { # uri |
|
|
916 | $loc = URI->new_abs ($loc, $url)->as_string; |
|
|
917 | |
|
|
918 | } else { |
|
|
919 | return _error %state, $cb, { @pseudo, Status => 599, Reason => "Cannot parse Location (URI module missing)" }; |
|
|
920 | #$hdr{Status} = 599; |
|
|
921 | #$hdr{Reason} = "Unparsable Redirect (URI module missing)"; |
|
|
922 | #$recurse = 0; |
|
|
923 | } |
|
|
924 | } |
|
|
925 | |
|
|
926 | $hdr{location} = $loc; |
|
|
927 | } |
|
|
928 | |
|
|
929 | my $redirect; |
|
|
930 | |
|
|
931 | if ($recurse) { |
|
|
932 | my $status = $hdr{Status}; |
|
|
933 | |
|
|
934 | # industry standard is to redirect POST as GET for |
|
|
935 | # 301, 302 and 303, in contrast to HTTP/1.0 and 1.1. |
|
|
936 | # also, the UA should ask the user for 301 and 307 and POST, |
|
|
937 | # industry standard seems to be to simply follow. |
|
|
938 | # we go with the industry standard. 308 is defined |
|
|
939 | # by rfc7238 |
|
|
940 | if ($status == 301 or $status == 302 or $status == 303) { |
|
|
941 | # HTTP/1.1 is unclear on how to mutate the method |
|
|
942 | $method = "GET" unless $method eq "HEAD"; |
|
|
943 | $redirect = 1; |
|
|
944 | } elsif ($status == 307 or $status == 308) { |
|
|
945 | $redirect = 1; |
|
|
946 | } |
|
|
947 | } |
|
|
948 | |
|
|
949 | my $finish = sub { # ($data, $err_status, $err_reason[, $persistent]) |
|
|
950 | if ($state{handle}) { |
|
|
951 | # handle keepalive |
|
|
952 | if ( |
|
|
953 | $persistent |
|
|
954 | && $_[3] |
|
|
955 | && ($hdr{HTTPVersion} < 1.1 |
|
|
956 | ? $hdr{connection} =~ /\bkeep-?alive\b/i |
|
|
957 | : $hdr{connection} !~ /\bclose\b/i) |
|
|
958 | ) { |
|
|
959 | ka_store $ka_key, delete $state{handle}; |
|
|
960 | } else { |
|
|
961 | # no keepalive, destroy the handle |
|
|
962 | $state{handle}->destroy; |
|
|
963 | } |
|
|
964 | } |
|
|
965 | |
|
|
966 | %state = (); |
|
|
967 | |
|
|
968 | if (defined $_[1]) { |
|
|
969 | $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1]; |
|
|
970 | $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2]; |
|
|
971 | } |
|
|
972 | |
|
|
973 | # set-cookie processing |
|
|
974 | if ($arg{cookie_jar}) { |
|
|
975 | cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost, $hdr{date}; |
|
|
976 | } |
|
|
977 | |
|
|
978 | if ($redirect && exists $hdr{location}) { |
|
|
979 | # we ignore any errors, as it is very common to receive |
|
|
980 | # Content-Length != 0 but no actual body |
|
|
981 | # we also access %hdr, as $_[1] might be an erro |
|
|
982 | $state{recurse} = |
|
|
983 | http_request ( |
|
|
984 | $method => $hdr{location}, |
|
|
985 | %arg, |
|
|
986 | recurse => $recurse - 1, |
|
|
987 | Redirect => [$_[0], \%hdr], |
|
|
988 | sub { |
|
|
989 | %state = (); |
|
|
990 | &$cb |
|
|
991 | }, |
|
|
992 | ); |
|
|
993 | } else { |
|
|
994 | $cb->($_[0], \%hdr); |
|
|
995 | } |
|
|
996 | }; |
|
|
997 | |
|
|
998 | $ae_error = 597; # body phase |
|
|
999 | |
|
|
1000 | my $chunked = $hdr{"transfer-encoding"} =~ /\bchunked\b/i; # not quite correct... |
|
|
1001 | |
|
|
1002 | my $len = $chunked ? undef : $hdr{"content-length"}; |
|
|
1003 | |
|
|
1004 | # body handling, many different code paths |
|
|
1005 | # - no body expected |
|
|
1006 | # - want_body_handle |
|
|
1007 | # - te chunked |
|
|
1008 | # - 2x length known (with or without on_body) |
|
|
1009 | # - 2x length not known (with or without on_body) |
|
|
1010 | if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) { |
|
|
1011 | $finish->(undef, 598 => "Request cancelled by on_header"); |
|
|
1012 | } elsif ( |
|
|
1013 | $hdr{Status} =~ /^(?:1..|204|205|304)$/ |
|
|
1014 | or $method eq "HEAD" |
|
|
1015 | or (defined $len && $len == 0) # == 0, not !, because "0 " is true |
|
|
1016 | ) { |
|
|
1017 | # no body |
|
|
1018 | $finish->("", undef, undef, 1); |
|
|
1019 | |
|
|
1020 | } elsif (!$redirect && $arg{want_body_handle}) { |
|
|
1021 | $_[0]->on_eof (undef); |
|
|
1022 | $_[0]->on_error (undef); |
|
|
1023 | $_[0]->on_read (undef); |
|
|
1024 | |
|
|
1025 | $finish->(delete $state{handle}); |
|
|
1026 | |
|
|
1027 | } elsif ($chunked) { |
|
|
1028 | my $cl = 0; |
|
|
1029 | my $body = ""; |
|
|
1030 | my $on_body = $arg{on_body} || sub { $body .= shift; 1 }; |
|
|
1031 | |
|
|
1032 | $state{read_chunk} = sub { |
|
|
1033 | $_[1] =~ /^([0-9a-fA-F]+)/ |
|
|
1034 | or return $finish->(undef, $ae_error => "Garbled chunked transfer encoding"); |
|
|
1035 | |
|
|
1036 | my $len = hex $1; |
|
|
1037 | |
|
|
1038 | if ($len) { |
|
|
1039 | $cl += $len; |
|
|
1040 | |
|
|
1041 | $_[0]->push_read (chunk => $len, sub { |
|
|
1042 | $on_body->($_[1], \%hdr) |
|
|
1043 | or return $finish->(undef, 598 => "Request cancelled by on_body"); |
|
|
1044 | |
|
|
1045 | $_[0]->push_read (line => sub { |
|
|
1046 | length $_[1] |
|
|
1047 | and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding"); |
|
|
1048 | $_[0]->push_read (line => $state{read_chunk}); |
|
|
1049 | }); |
|
|
1050 | }); |
|
|
1051 | } else { |
|
|
1052 | $hdr{"content-length"} ||= $cl; |
|
|
1053 | |
|
|
1054 | $_[0]->push_read (line => $qr_nlnl, sub { |
|
|
1055 | if (length $_[1]) { |
|
|
1056 | for ("$_[1]") { |
|
|
1057 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
|
|
1058 | |
|
|
1059 | my $hdr = _parse_hdr |
|
|
1060 | or return $finish->(undef, $ae_error => "Garbled response trailers"); |
|
|
1061 | |
|
|
1062 | %hdr = (%hdr, %$hdr); |
|
|
1063 | } |
|
|
1064 | } |
|
|
1065 | |
|
|
1066 | $finish->($body, undef, undef, 1); |
|
|
1067 | }); |
|
|
1068 | } |
|
|
1069 | }; |
|
|
1070 | |
|
|
1071 | $_[0]->push_read (line => $state{read_chunk}); |
|
|
1072 | |
|
|
1073 | } elsif ($arg{on_body}) { |
|
|
1074 | if (defined $len) { |
|
|
1075 | $_[0]->on_read (sub { |
|
|
1076 | $len -= length $_[0]{rbuf}; |
|
|
1077 | |
|
|
1078 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
|
|
1079 | or return $finish->(undef, 598 => "Request cancelled by on_body"); |
|
|
1080 | |
|
|
1081 | $len > 0 |
|
|
1082 | or $finish->("", undef, undef, 1); |
|
|
1083 | }); |
|
|
1084 | } else { |
|
|
1085 | $_[0]->on_eof (sub { |
|
|
1086 | $finish->(""); |
|
|
1087 | }); |
|
|
1088 | $_[0]->on_read (sub { |
|
|
1089 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
|
|
1090 | or $finish->(undef, 598 => "Request cancelled by on_body"); |
|
|
1091 | }); |
|
|
1092 | } |
|
|
1093 | } else { |
|
|
1094 | $_[0]->on_eof (undef); |
|
|
1095 | |
|
|
1096 | if (defined $len) { |
|
|
1097 | $_[0]->on_read (sub { |
|
|
1098 | $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1) |
|
|
1099 | if $len <= length $_[0]{rbuf}; |
|
|
1100 | }); |
|
|
1101 | } else { |
|
|
1102 | $_[0]->on_error (sub { |
|
|
1103 | ($! == Errno::EPIPE || !$!) |
|
|
1104 | ? $finish->(delete $_[0]{rbuf}) |
|
|
1105 | : $finish->(undef, $ae_error => $_[2]); |
|
|
1106 | }); |
|
|
1107 | $_[0]->on_read (sub { }); |
|
|
1108 | } |
|
|
1109 | } |
|
|
1110 | }; |
|
|
1111 | |
|
|
1112 | # if keepalive is enabled, then the server closing the connection |
|
|
1113 | # before a response can happen legally - we retry on idempotent methods. |
|
|
1114 | if ($was_persistent && $idempotent) { |
|
|
1115 | my $old_eof = $hdl->{on_eof}; |
|
|
1116 | $hdl->{on_eof} = sub { |
|
|
1117 | _destroy_state %state; |
|
|
1118 | |
|
|
1119 | %state = (); |
|
|
1120 | $state{recurse} = |
|
|
1121 | http_request ( |
|
|
1122 | $method => $url, |
|
|
1123 | %arg, |
|
|
1124 | recurse => $recurse - 1, |
|
|
1125 | keepalive => 0, |
|
|
1126 | sub { |
|
|
1127 | %state = (); |
|
|
1128 | &$cb |
|
|
1129 | } |
|
|
1130 | ); |
|
|
1131 | }; |
|
|
1132 | $hdl->on_read (sub { |
|
|
1133 | return unless %state; |
|
|
1134 | |
|
|
1135 | # as soon as we receive something, a connection close |
|
|
1136 | # once more becomes a hard error |
|
|
1137 | $hdl->{on_eof} = $old_eof; |
|
|
1138 | $hdl->push_read (line => $qr_nlnl, $state{read_response}); |
|
|
1139 | }); |
|
|
1140 | } else { |
|
|
1141 | $hdl->push_read (line => $qr_nlnl, $state{read_response}); |
|
|
1142 | } |
|
|
1143 | }; |
|
|
1144 | |
|
|
1145 | my $prepare_handle = sub { |
|
|
1146 | my ($hdl) = $state{handle}; |
|
|
1147 | |
|
|
1148 | $hdl->on_error (sub { |
|
|
1149 | _error %state, $cb, { @pseudo, Status => $ae_error, Reason => $_[2] }; |
|
|
1150 | }); |
|
|
1151 | $hdl->on_eof (sub { |
|
|
1152 | _error %state, $cb, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" }; |
|
|
1153 | }); |
|
|
1154 | $hdl->timeout_reset; |
|
|
1155 | $hdl->timeout ($timeout); |
|
|
1156 | }; |
|
|
1157 | |
|
|
1158 | # connected to proxy (or origin server) |
|
|
1159 | my $connect_cb = sub { |
|
|
1160 | my $fh = shift |
|
|
1161 | or return _error %state, $cb, { @pseudo, Status => $ae_error, Reason => "$!" }; |
|
|
1162 | |
|
|
1163 | return unless delete $state{connect_guard}; |
|
|
1164 | |
|
|
1165 | # get handle |
|
|
1166 | $state{handle} = new AnyEvent::Handle |
|
|
1167 | %{ $arg{handle_params} }, |
|
|
1168 | fh => $fh, |
|
|
1169 | peername => $uhost, |
|
|
1170 | tls_ctx => $arg{tls_ctx}, |
|
|
1171 | ; |
|
|
1172 | |
|
|
1173 | $prepare_handle->(); |
|
|
1174 | |
|
|
1175 | #$state{handle}->starttls ("connect") if $rscheme eq "https"; |
|
|
1176 | |
|
|
1177 | # now handle proxy-CONNECT method |
|
|
1178 | if ($proxy && $uscheme eq "https") { |
|
|
1179 | # oh dear, we have to wrap it into a connect request |
|
|
1180 | |
|
|
1181 | # maybe re-use $uauthority with patched port? |
|
|
1182 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012\015\012"); |
|
|
1183 | $state{handle}->push_read (line => $qr_nlnl, sub { |
|
|
1184 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
|
|
1185 | or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }; |
|
|
1186 | |
|
|
1187 | if ($2 == 200) { |
|
|
1188 | $rpath = $upath; |
|
|
1189 | $handle_actual_request->(); |
|
|
1190 | } else { |
|
|
1191 | _error %state, $cb, { @pseudo, Status => $2, Reason => $3 }; |
|
|
1192 | } |
|
|
1193 | }); |
|
|
1194 | } else { |
|
|
1195 | $handle_actual_request->(); |
|
|
1196 | } |
|
|
1197 | }; |
613 | |
1198 | |
614 | _get_slot $uhost, sub { |
1199 | _get_slot $uhost, sub { |
615 | $state{slot_guard} = shift; |
1200 | $state{slot_guard} = shift; |
616 | |
1201 | |
617 | return unless $state{connect_guard}; |
1202 | return unless $state{connect_guard}; |
618 | |
1203 | |
619 | my $ae_error = 595; # connecting |
1204 | # try to use an existing keepalive connection, but only if we, ourselves, plan |
|
|
1205 | # on a keepalive request (in theory, this should be a separate config option). |
|
|
1206 | if ($persistent && $KA_CACHE{$ka_key}) { |
|
|
1207 | $was_persistent = 1; |
620 | |
1208 | |
621 | my $connect_cb = sub { |
1209 | $state{handle} = ka_fetch $ka_key; |
622 | $state{fh} = shift |
|
|
623 | or do { |
|
|
624 | my $err = "$!"; |
|
|
625 | %state = (); |
|
|
626 | return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err }); |
|
|
627 | }; |
|
|
628 | |
|
|
629 | return unless delete $state{connect_guard}; |
|
|
630 | |
|
|
631 | # get handle |
|
|
632 | $state{handle} = new AnyEvent::Handle |
|
|
633 | fh => $state{fh}, |
|
|
634 | peername => $rhost, |
|
|
635 | tls_ctx => $arg{tls_ctx}, |
|
|
636 | # these need to be reconfigured on keepalive handles |
|
|
637 | timeout => $timeout, |
|
|
638 | on_error => sub { |
|
|
639 | %state = (); |
|
|
640 | $cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] }); |
|
|
641 | }, |
|
|
642 | on_eof => sub { |
|
|
643 | %state = (); |
|
|
644 | $cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" }); |
|
|
645 | }, |
|
|
646 | ; |
|
|
647 | |
|
|
648 | # limit the number of persistent connections |
|
|
649 | # keepalive not yet supported |
|
|
650 | # if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
|
|
651 | # ++$KA_COUNT{$_[1]}; |
|
|
652 | # $state{handle}{ka_count_guard} = AnyEvent::Util::guard { |
|
|
653 | # --$KA_COUNT{$_[1]} |
|
|
654 | # }; |
|
|
655 | # $hdr{connection} = "keep-alive"; |
|
|
656 | # } |
|
|
657 | |
|
|
658 | $state{handle}->starttls ("connect") if $rscheme eq "https"; |
|
|
659 | |
|
|
660 | # handle actual, non-tunneled, request |
|
|
661 | my $handle_actual_request = sub { |
|
|
662 | $ae_error = 596; # request phase |
|
|
663 | |
|
|
664 | $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; |
|
|
665 | |
|
|
666 | # send request |
|
|
667 | $state{handle}->push_write ( |
1210 | $state{handle}->destroyed |
668 | "$method $rpath HTTP/1.1\015\012" |
1211 | and die "AnyEvent::HTTP: unexpectedly got a destructed handle (1), please report.";#d# |
669 | . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr) |
1212 | $prepare_handle->(); |
670 | . "\015\012" |
1213 | $state{handle}->destroyed |
671 | . (delete $arg{body}) |
1214 | and die "AnyEvent::HTTP: unexpectedly got a destructed handle (2), please report.";#d# |
672 | ); |
|
|
673 | |
|
|
674 | # return if error occured during push_write() |
|
|
675 | return unless %state; |
|
|
676 | |
|
|
677 | %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use |
|
|
678 | |
|
|
679 | # status line and headers |
|
|
680 | $state{read_response} = sub { |
|
|
681 | for ("$_[1]") { |
|
|
682 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
|
|
683 | |
|
|
684 | /^HTTP\/0*([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/gxci |
|
|
685 | or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" })); |
|
|
686 | |
|
|
687 | # 100 Continue handling |
|
|
688 | # should not happen as we don't send expect: 100-continue, |
|
|
689 | # but we handle it just in case. |
|
|
690 | # since we send the request body regardless, if we get an error |
|
|
691 | # we are out of-sync, which we currently do NOT handle correctly. |
|
|
692 | return $state{handle}->push_read (line => $qr_nlnl, $state{read_response}) |
|
|
693 | if $2 eq 100; |
|
|
694 | |
|
|
695 | push @pseudo, |
|
|
696 | HTTPVersion => $1, |
|
|
697 | Status => $2, |
|
|
698 | Reason => $3, |
|
|
699 | ; |
|
|
700 | |
|
|
701 | my $hdr = parse_hdr |
|
|
702 | or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" })); |
|
|
703 | |
|
|
704 | %hdr = (%$hdr, @pseudo); |
|
|
705 | } |
|
|
706 | |
|
|
707 | # redirect handling |
|
|
708 | # microsoft and other shitheads don't give a shit for following standards, |
|
|
709 | # try to support some common forms of broken Location headers. |
|
|
710 | if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { |
|
|
711 | $hdr{location} =~ s/^\.\/+//; |
|
|
712 | |
|
|
713 | my $url = "$rscheme://$uhost:$uport"; |
|
|
714 | |
|
|
715 | unless ($hdr{location} =~ s/^\///) { |
|
|
716 | $url .= $upath; |
|
|
717 | $url =~ s/\/[^\/]*$//; |
|
|
718 | } |
|
|
719 | |
|
|
720 | $hdr{location} = "$url/$hdr{location}"; |
|
|
721 | } |
|
|
722 | |
|
|
723 | my $redirect; |
|
|
724 | |
|
|
725 | if ($recurse) { |
|
|
726 | my $status = $hdr{Status}; |
|
|
727 | |
|
|
728 | # industry standard is to redirect POST as GET for |
|
|
729 | # 301, 302 and 303, in contrast to HTTP/1.0 and 1.1. |
|
|
730 | # also, the UA should ask the user for 301 and 307 and POST, |
|
|
731 | # industry standard seems to be to simply follow. |
|
|
732 | # we go with the industry standard. |
|
|
733 | if ($status == 301 or $status == 302 or $status == 303) { |
|
|
734 | # HTTP/1.1 is unclear on how to mutate the method |
|
|
735 | $method = "GET" unless $method eq "HEAD"; |
|
|
736 | $redirect = 1; |
|
|
737 | } elsif ($status == 307) { |
|
|
738 | $redirect = 1; |
|
|
739 | } |
|
|
740 | } |
|
|
741 | |
|
|
742 | my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive]) |
|
|
743 | my $may_keep_alive = $_[3]; |
|
|
744 | |
|
|
745 | $state{handle}->destroy if $state{handle}; |
|
|
746 | %state = (); |
|
|
747 | |
|
|
748 | if (defined $_[1]) { |
|
|
749 | $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1]; |
|
|
750 | $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2]; |
|
|
751 | } |
|
|
752 | |
|
|
753 | # set-cookie processing |
|
|
754 | if ($arg{cookie_jar}) { |
|
|
755 | cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost; |
|
|
756 | } |
|
|
757 | |
|
|
758 | if ($redirect && exists $hdr{location}) { |
|
|
759 | # we ignore any errors, as it is very common to receive |
|
|
760 | # Content-Length != 0 but no actual body |
|
|
761 | # we also access %hdr, as $_[1] might be an erro |
|
|
762 | http_request ( |
|
|
763 | $method => $hdr{location}, |
|
|
764 | %arg, |
|
|
765 | recurse => $recurse - 1, |
|
|
766 | Redirect => [$_[0], \%hdr], |
|
|
767 | $cb); |
|
|
768 | } else { |
|
|
769 | $cb->($_[0], \%hdr); |
|
|
770 | } |
|
|
771 | }; |
|
|
772 | |
|
|
773 | $ae_error = 597; # body phase |
|
|
774 | |
|
|
775 | my $len = $hdr{"content-length"}; |
|
|
776 | |
|
|
777 | if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) { |
|
|
778 | $finish->(undef, 598 => "Request cancelled by on_header"); |
|
|
779 | } elsif ( |
|
|
780 | $hdr{Status} =~ /^(?:1..|204|205|304)$/ |
|
|
781 | or $method eq "HEAD" |
|
|
782 | or (defined $len && !$len) |
|
|
783 | ) { |
|
|
784 | # no body |
|
|
785 | $finish->("", undef, undef, 1); |
|
|
786 | } else { |
|
|
787 | # body handling, many different code paths |
|
|
788 | # - no body expected |
|
|
789 | # - want_body_handle |
|
|
790 | # - te chunked |
|
|
791 | # - 2x length known (with or without on_body) |
|
|
792 | # - 2x length not known (with or without on_body) |
|
|
793 | if (!$redirect && $arg{want_body_handle}) { |
|
|
794 | $_[0]->on_eof (undef); |
|
|
795 | $_[0]->on_error (undef); |
|
|
796 | $_[0]->on_read (undef); |
|
|
797 | |
|
|
798 | $finish->(delete $state{handle}); |
|
|
799 | |
|
|
800 | } elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) { |
|
|
801 | my $cl = 0; |
|
|
802 | my $body = undef; |
|
|
803 | my $on_body = $arg{on_body} || sub { $body .= shift; 1 }; |
|
|
804 | |
|
|
805 | my $read_chunk; $read_chunk = sub { |
|
|
806 | $_[1] =~ /^([0-9a-fA-F]+)/ |
|
|
807 | or $finish->(undef, $ae_error => "Garbled chunked transfer encoding"); |
|
|
808 | |
|
|
809 | my $len = hex $1; |
|
|
810 | |
|
|
811 | if ($len) { |
|
|
812 | $cl += $len; |
|
|
813 | |
|
|
814 | $_[0]->push_read (chunk => $len, sub { |
|
|
815 | $on_body->($_[1], \%hdr) |
|
|
816 | or return $finish->(undef, 598 => "Request cancelled by on_body"); |
|
|
817 | |
|
|
818 | $_[0]->push_read (line => sub { |
|
|
819 | length $_[1] |
|
|
820 | and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding"); |
|
|
821 | $_[0]->push_read (line => $read_chunk); |
|
|
822 | }); |
|
|
823 | }); |
|
|
824 | } else { |
|
|
825 | $hdr{"content-length"} ||= $cl; |
|
|
826 | |
|
|
827 | $_[0]->push_read (line => $qr_nlnl, sub { |
|
|
828 | if (length $_[1]) { |
|
|
829 | for ("$_[1]") { |
|
|
830 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
|
|
831 | |
|
|
832 | my $hdr = parse_hdr |
|
|
833 | or return $finish->(undef, $ae_error => "Garbled response trailers"); |
|
|
834 | |
|
|
835 | %hdr = (%hdr, %$hdr); |
|
|
836 | } |
|
|
837 | } |
|
|
838 | |
|
|
839 | $finish->($body, undef, undef, 1); |
|
|
840 | }); |
|
|
841 | } |
|
|
842 | }; |
|
|
843 | |
|
|
844 | $_[0]->push_read (line => $read_chunk); |
|
|
845 | |
|
|
846 | } elsif ($arg{on_body}) { |
|
|
847 | if ($len) { |
|
|
848 | $_[0]->on_read (sub { |
|
|
849 | $len -= length $_[0]{rbuf}; |
|
|
850 | |
|
|
851 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
|
|
852 | or return $finish->(undef, 598 => "Request cancelled by on_body"); |
|
|
853 | |
|
|
854 | $len > 0 |
|
|
855 | or $finish->("", undef, undef, 1); |
|
|
856 | }); |
|
|
857 | } else { |
|
|
858 | $_[0]->on_eof (sub { |
|
|
859 | $finish->(""); |
|
|
860 | }); |
|
|
861 | $_[0]->on_read (sub { |
|
|
862 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
|
|
863 | or $finish->(undef, 598 => "Request cancelled by on_body"); |
|
|
864 | }); |
|
|
865 | } |
|
|
866 | } else { |
|
|
867 | $_[0]->on_eof (undef); |
|
|
868 | |
|
|
869 | if ($len) { |
|
|
870 | $_[0]->on_read (sub { |
|
|
871 | $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1) |
|
|
872 | if $len <= length $_[0]{rbuf}; |
|
|
873 | }); |
|
|
874 | } else { |
|
|
875 | $_[0]->on_error (sub { |
|
|
876 | ($! == Errno::EPIPE || !$!) |
|
|
877 | ? $finish->(delete $_[0]{rbuf}) |
|
|
878 | : $finish->(undef, $ae_error => $_[2]); |
|
|
879 | }); |
|
|
880 | $_[0]->on_read (sub { }); |
|
|
881 | } |
|
|
882 | } |
|
|
883 | } |
|
|
884 | }; |
|
|
885 | |
|
|
886 | $state{handle}->push_read (line => $qr_nlnl, $state{read_response}); |
|
|
887 | }; |
|
|
888 | |
|
|
889 | # now handle proxy-CONNECT method |
|
|
890 | if ($proxy && $uscheme eq "https") { |
|
|
891 | # oh dear, we have to wrap it into a connect request |
|
|
892 | |
|
|
893 | # maybe re-use $uauthority with patched port? |
|
|
894 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); |
|
|
895 | $state{handle}->push_read (line => $qr_nlnl, sub { |
|
|
896 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
|
|
897 | or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" })); |
|
|
898 | |
|
|
899 | if ($2 == 200) { |
|
|
900 | $rpath = $upath; |
|
|
901 | &$handle_actual_request; |
1215 | $handle_actual_request->(); |
902 | } else { |
1216 | |
903 | %state = (); |
|
|
904 | $cb->(undef, { @pseudo, Status => $2, Reason => $3 }); |
|
|
905 | } |
|
|
906 | }); |
|
|
907 | } else { |
1217 | } else { |
908 | &$handle_actual_request; |
|
|
909 | } |
|
|
910 | }; |
|
|
911 | |
|
|
912 | my $tcp_connect = $arg{tcp_connect} |
1218 | my $tcp_connect = $arg{tcp_connect} |
913 | || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect }; |
1219 | || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect }; |
914 | |
1220 | |
915 | $state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout }); |
1221 | $state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout }); |
916 | |
1222 | } |
917 | }; |
1223 | }; |
918 | |
1224 | |
919 | defined wantarray && AnyEvent::Util::guard { %state = () } |
1225 | defined wantarray && AnyEvent::Util::guard { _destroy_state %state } |
920 | } |
1226 | } |
921 | |
1227 | |
922 | sub http_get($@) { |
1228 | sub http_get($@) { |
923 | unshift @_, "GET"; |
1229 | unshift @_, "GET"; |
924 | &http_request |
1230 | &http_request |
… | |
… | |
942 | AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for |
1248 | AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for |
943 | the actual connection, which in turn uses AnyEvent::DNS to resolve |
1249 | the actual connection, which in turn uses AnyEvent::DNS to resolve |
944 | hostnames. The latter is a simple stub resolver and does no caching |
1250 | hostnames. The latter is a simple stub resolver and does no caching |
945 | on its own. If you want DNS caching, you currently have to provide |
1251 | on its own. If you want DNS caching, you currently have to provide |
946 | your own default resolver (by storing a suitable resolver object in |
1252 | your own default resolver (by storing a suitable resolver object in |
947 | C<$AnyEvent::DNS::RESOLVER>). |
1253 | C<$AnyEvent::DNS::RESOLVER>) or your own C<tcp_connect> callback. |
948 | |
1254 | |
949 | =head2 GLOBAL FUNCTIONS AND VARIABLES |
1255 | =head2 GLOBAL FUNCTIONS AND VARIABLES |
950 | |
1256 | |
951 | =over 4 |
1257 | =over 4 |
952 | |
1258 | |
953 | =item AnyEvent::HTTP::set_proxy "proxy-url" |
1259 | =item AnyEvent::HTTP::set_proxy "proxy-url" |
954 | |
1260 | |
955 | Sets the default proxy server to use. The proxy-url must begin with a |
1261 | Sets the default proxy server to use. The proxy-url must begin with a |
956 | string of the form C<http://host:port> (optionally C<https:...>), croaks |
1262 | string of the form C<http://host:port>, croaks otherwise. |
957 | otherwise. |
|
|
958 | |
1263 | |
959 | To clear an already-set proxy, use C<undef>. |
1264 | To clear an already-set proxy, use C<undef>. |
|
|
1265 | |
|
|
1266 | When AnyEvent::HTTP is loaded for the first time it will query the |
|
|
1267 | default proxy from the operating system, currently by looking at |
|
|
1268 | C<$ENV{http_proxy>}. |
|
|
1269 | |
|
|
1270 | =item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end] |
|
|
1271 | |
|
|
1272 | Remove all cookies from the cookie jar that have been expired. If |
|
|
1273 | C<$session_end> is given and true, then additionally remove all session |
|
|
1274 | cookies. |
|
|
1275 | |
|
|
1276 | You should call this function (with a true C<$session_end>) before you |
|
|
1277 | save cookies to disk, and you should call this function after loading them |
|
|
1278 | again. If you have a long-running program you can additionally call this |
|
|
1279 | function from time to time. |
|
|
1280 | |
|
|
1281 | A cookie jar is initially an empty hash-reference that is managed by this |
|
|
1282 | module. It's format is subject to change, but currently it is like this: |
|
|
1283 | |
|
|
1284 | The key C<version> has to contain C<1>, otherwise the hash gets |
|
|
1285 | emptied. All other keys are hostnames or IP addresses pointing to |
|
|
1286 | hash-references. The key for these inner hash references is the |
|
|
1287 | server path for which this cookie is meant, and the values are again |
|
|
1288 | hash-references. Each key of those hash-references is a cookie name, and |
|
|
1289 | the value, you guessed it, is another hash-reference, this time with the |
|
|
1290 | key-value pairs from the cookie, except for C<expires> and C<max-age>, |
|
|
1291 | which have been replaced by a C<_expires> key that contains the cookie |
|
|
1292 | expiry timestamp. Session cookies are indicated by not having an |
|
|
1293 | C<_expires> key. |
|
|
1294 | |
|
|
1295 | Here is an example of a cookie jar with a single cookie, so you have a |
|
|
1296 | chance of understanding the above paragraph: |
|
|
1297 | |
|
|
1298 | { |
|
|
1299 | version => 1, |
|
|
1300 | "10.0.0.1" => { |
|
|
1301 | "/" => { |
|
|
1302 | "mythweb_id" => { |
|
|
1303 | _expires => 1293917923, |
|
|
1304 | value => "ooRung9dThee3ooyXooM1Ohm", |
|
|
1305 | }, |
|
|
1306 | }, |
|
|
1307 | }, |
|
|
1308 | } |
960 | |
1309 | |
961 | =item $date = AnyEvent::HTTP::format_date $timestamp |
1310 | =item $date = AnyEvent::HTTP::format_date $timestamp |
962 | |
1311 | |
963 | Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP |
1312 | Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP |
964 | Date (RFC 2616). |
1313 | Date (RFC 2616). |
965 | |
1314 | |
966 | =item $timestamp = AnyEvent::HTTP::parse_date $date |
1315 | =item $timestamp = AnyEvent::HTTP::parse_date $date |
967 | |
1316 | |
968 | Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and |
1317 | Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a |
969 | returns the corresponding POSIX timestamp, or C<undef> if the date cannot |
1318 | bunch of minor variations of those, and returns the corresponding POSIX |
970 | be parsed. |
1319 | timestamp, or C<undef> if the date cannot be parsed. |
971 | |
1320 | |
972 | =item $AnyEvent::HTTP::MAX_RECURSE |
1321 | =item $AnyEvent::HTTP::MAX_RECURSE |
973 | |
1322 | |
974 | The default value for the C<recurse> request parameter (default: C<10>). |
1323 | The default value for the C<recurse> request parameter (default: C<10>). |
|
|
1324 | |
|
|
1325 | =item $AnyEvent::HTTP::TIMEOUT |
|
|
1326 | |
|
|
1327 | The default timeout for connection operations (default: C<300>). |
975 | |
1328 | |
976 | =item $AnyEvent::HTTP::USERAGENT |
1329 | =item $AnyEvent::HTTP::USERAGENT |
977 | |
1330 | |
978 | The default value for the C<User-Agent> header (the default is |
1331 | The default value for the C<User-Agent> header (the default is |
979 | C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
1332 | C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
980 | |
1333 | |
981 | =item $AnyEvent::HTTP::MAX_PER_HOST |
1334 | =item $AnyEvent::HTTP::MAX_PER_HOST |
982 | |
1335 | |
983 | The maximum number of concurrent connections to the same host (identified |
1336 | The maximum number of concurrent connections to the same host (identified |
984 | by the hostname). If the limit is exceeded, then the additional requests |
1337 | by the hostname). If the limit is exceeded, then the additional requests |
985 | are queued until previous connections are closed. |
1338 | are queued until previous connections are closed. Both persistent and |
|
|
1339 | non-persistent connections are counted in this limit. |
986 | |
1340 | |
987 | The default value for this is C<4>, and it is highly advisable to not |
1341 | The default value for this is C<4>, and it is highly advisable to not |
988 | increase it. |
1342 | increase it much. |
|
|
1343 | |
|
|
1344 | For comparison: the RFC's recommend 4 non-persistent or 2 persistent |
|
|
1345 | connections, older browsers used 2, newer ones (such as firefox 3) |
|
|
1346 | typically use 6, and Opera uses 8 because like, they have the fastest |
|
|
1347 | browser and give a shit for everybody else on the planet. |
|
|
1348 | |
|
|
1349 | =item $AnyEvent::HTTP::PERSISTENT_TIMEOUT |
|
|
1350 | |
|
|
1351 | The time after which idle persistent connections get closed by |
|
|
1352 | AnyEvent::HTTP (default: C<3>). |
989 | |
1353 | |
990 | =item $AnyEvent::HTTP::ACTIVE |
1354 | =item $AnyEvent::HTTP::ACTIVE |
991 | |
1355 | |
992 | The number of active connections. This is not the number of currently |
1356 | The number of active connections. This is not the number of currently |
993 | running requests, but the number of currently open and non-idle TCP |
1357 | running requests, but the number of currently open and non-idle TCP |
994 | connections. This number of can be useful for load-leveling. |
1358 | connections. This number can be useful for load-leveling. |
995 | |
1359 | |
996 | =back |
1360 | =back |
997 | |
1361 | |
998 | =cut |
1362 | =cut |
999 | |
1363 | |
… | |
… | |
1014 | sub parse_date($) { |
1378 | sub parse_date($) { |
1015 | my ($date) = @_; |
1379 | my ($date) = @_; |
1016 | |
1380 | |
1017 | my ($d, $m, $y, $H, $M, $S); |
1381 | my ($d, $m, $y, $H, $M, $S); |
1018 | |
1382 | |
1019 | if ($date =~ /^[A-Z][a-z][a-z], ([0-9][0-9])[\- ]([A-Z][a-z][a-z])[\- ]([0-9][0-9][0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) { |
1383 | 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$/) { |
1020 | # RFC 822/1123, required by RFC 2616 (with " ") |
1384 | # RFC 822/1123, required by RFC 2616 (with " ") |
1021 | # cookie dates (with "-") |
1385 | # cookie dates (with "-") |
1022 | |
1386 | |
1023 | ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6); |
1387 | ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6); |
1024 | |
1388 | |
1025 | } elsif ($date =~ /^[A-Z][a-z]+, ([0-9][0-9])-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) { |
1389 | } 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$/) { |
1026 | # RFC 850 |
1390 | # RFC 850 |
1027 | ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6); |
1391 | ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6); |
1028 | |
1392 | |
1029 | } 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])$/) { |
1393 | } 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])$/) { |
1030 | # ISO C's asctime |
1394 | # ISO C's asctime |
1031 | ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5); |
1395 | ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5); |
1032 | } |
1396 | } |
1033 | # other formats fail in the loop below |
1397 | # other formats fail in the loop below |
1034 | |
1398 | |
1035 | for (0..11) { |
1399 | for (0..11) { |
1036 | if ($m eq $month[$_]) { |
1400 | if ($m eq $month[$_]) { |
1037 | require Time::Local; |
1401 | require Time::Local; |
1038 | return Time::Local::timegm ($S, $M, $H, $d, $_, $y); |
1402 | return eval { Time::Local::timegm ($S, $M, $H, $d, $_, $y) }; |
1039 | } |
1403 | } |
1040 | } |
1404 | } |
1041 | |
1405 | |
1042 | undef |
1406 | undef |
1043 | } |
1407 | } |
1044 | |
1408 | |
1045 | sub set_proxy($) { |
1409 | sub set_proxy($) { |
1046 | if (length $_[0]) { |
1410 | if (length $_[0]) { |
1047 | $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix |
1411 | $_[0] =~ m%^(http):// ([^:/]+) (?: : (\d*) )?%ix |
1048 | or Carp::croak "$_[0]: invalid proxy URL"; |
1412 | or Carp::croak "$_[0]: invalid proxy URL"; |
1049 | $PROXY = [$2, $3 || 3128, $1] |
1413 | $PROXY = [$2, $3 || 3128, $1] |
1050 | } else { |
1414 | } else { |
1051 | undef $PROXY; |
1415 | undef $PROXY; |
1052 | } |
1416 | } |
… | |
… | |
1055 | # initialise proxy from environment |
1419 | # initialise proxy from environment |
1056 | eval { |
1420 | eval { |
1057 | set_proxy $ENV{http_proxy}; |
1421 | set_proxy $ENV{http_proxy}; |
1058 | }; |
1422 | }; |
1059 | |
1423 | |
|
|
1424 | =head2 SHOWCASE |
|
|
1425 | |
|
|
1426 | This section contains some more elaborate "real-world" examples or code |
|
|
1427 | snippets. |
|
|
1428 | |
|
|
1429 | =head2 HTTP/1.1 FILE DOWNLOAD |
|
|
1430 | |
|
|
1431 | Downloading files with HTTP can be quite tricky, especially when something |
|
|
1432 | goes wrong and you want to resume. |
|
|
1433 | |
|
|
1434 | Here is a function that initiates and resumes a download. It uses the |
|
|
1435 | last modified time to check for file content changes, and works with many |
|
|
1436 | HTTP/1.0 servers as well, and usually falls back to a complete re-download |
|
|
1437 | on older servers. |
|
|
1438 | |
|
|
1439 | It calls the completion callback with either C<undef>, which means a |
|
|
1440 | nonretryable error occurred, C<0> when the download was partial and should |
|
|
1441 | be retried, and C<1> if it was successful. |
|
|
1442 | |
|
|
1443 | use AnyEvent::HTTP; |
|
|
1444 | |
|
|
1445 | sub download($$$) { |
|
|
1446 | my ($url, $file, $cb) = @_; |
|
|
1447 | |
|
|
1448 | open my $fh, "+<", $file |
|
|
1449 | or die "$file: $!"; |
|
|
1450 | |
|
|
1451 | my %hdr; |
|
|
1452 | my $ofs = 0; |
|
|
1453 | |
|
|
1454 | warn stat $fh; |
|
|
1455 | warn -s _; |
|
|
1456 | if (stat $fh and -s _) { |
|
|
1457 | $ofs = -s _; |
|
|
1458 | warn "-s is ", $ofs; |
|
|
1459 | $hdr{"if-unmodified-since"} = AnyEvent::HTTP::format_date +(stat _)[9]; |
|
|
1460 | $hdr{"range"} = "bytes=$ofs-"; |
|
|
1461 | } |
|
|
1462 | |
|
|
1463 | http_get $url, |
|
|
1464 | headers => \%hdr, |
|
|
1465 | on_header => sub { |
|
|
1466 | my ($hdr) = @_; |
|
|
1467 | |
|
|
1468 | if ($hdr->{Status} == 200 && $ofs) { |
|
|
1469 | # resume failed |
|
|
1470 | truncate $fh, $ofs = 0; |
|
|
1471 | } |
|
|
1472 | |
|
|
1473 | sysseek $fh, $ofs, 0; |
|
|
1474 | |
|
|
1475 | 1 |
|
|
1476 | }, |
|
|
1477 | on_body => sub { |
|
|
1478 | my ($data, $hdr) = @_; |
|
|
1479 | |
|
|
1480 | if ($hdr->{Status} =~ /^2/) { |
|
|
1481 | length $data == syswrite $fh, $data |
|
|
1482 | or return; # abort on write errors |
|
|
1483 | } |
|
|
1484 | |
|
|
1485 | 1 |
|
|
1486 | }, |
|
|
1487 | sub { |
|
|
1488 | my (undef, $hdr) = @_; |
|
|
1489 | |
|
|
1490 | my $status = $hdr->{Status}; |
|
|
1491 | |
|
|
1492 | if (my $time = AnyEvent::HTTP::parse_date $hdr->{"last-modified"}) { |
|
|
1493 | utime $fh, $time, $time; |
|
|
1494 | } |
|
|
1495 | |
|
|
1496 | if ($status == 200 || $status == 206 || $status == 416) { |
|
|
1497 | # download ok || resume ok || file already fully downloaded |
|
|
1498 | $cb->(1, $hdr); |
|
|
1499 | |
|
|
1500 | } elsif ($status == 412) { |
|
|
1501 | # file has changed while resuming, delete and retry |
|
|
1502 | unlink $file; |
|
|
1503 | $cb->(0, $hdr); |
|
|
1504 | |
|
|
1505 | } elsif ($status == 500 or $status == 503 or $status =~ /^59/) { |
|
|
1506 | # retry later |
|
|
1507 | $cb->(0, $hdr); |
|
|
1508 | |
|
|
1509 | } else { |
|
|
1510 | $cb->(undef, $hdr); |
|
|
1511 | } |
|
|
1512 | } |
|
|
1513 | ; |
|
|
1514 | } |
|
|
1515 | |
|
|
1516 | download "http://server/somelargefile", "/tmp/somelargefile", sub { |
|
|
1517 | if ($_[0]) { |
|
|
1518 | print "OK!\n"; |
|
|
1519 | } elsif (defined $_[0]) { |
|
|
1520 | print "please retry later\n"; |
|
|
1521 | } else { |
|
|
1522 | print "ERROR\n"; |
|
|
1523 | } |
|
|
1524 | }; |
|
|
1525 | |
1060 | =head2 SOCKS PROXIES |
1526 | =head3 SOCKS PROXIES |
1061 | |
1527 | |
1062 | Socks proxies are not directly supported by AnyEvent::HTTP. You can |
1528 | Socks proxies are not directly supported by AnyEvent::HTTP. You can |
1063 | compile your perl to support socks, or use an external program such as |
1529 | compile your perl to support socks, or use an external program such as |
1064 | F<socksify> (dante) or F<tsocks> to make your program use a socks proxy |
1530 | F<socksify> (dante) or F<tsocks> to make your program use a socks proxy |
1065 | transparently. |
1531 | transparently. |