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39 | package AnyEvent::HTTP; |
39 | package AnyEvent::HTTP; |
40 | |
40 | |
41 | use strict; |
41 | use strict; |
42 | no warnings; |
42 | no warnings; |
43 | |
43 | |
44 | use Carp; |
44 | use Errno (); |
45 | |
45 | |
46 | use AnyEvent (); |
46 | use AnyEvent 4.8 (); |
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 = '1.42'; |
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 | |
63 | # changing these is evil |
63 | # changing these is evil |
64 | our $MAX_PERSISTENT_PER_HOST = 2; |
64 | our $MAX_PERSISTENT_PER_HOST = 0; |
65 | our $MAX_PER_HOST = 4; |
65 | our $MAX_PER_HOST = 4; |
66 | |
66 | |
67 | our $PROXY; |
67 | our $PROXY; |
68 | our $ACTIVE = 0; |
68 | our $ACTIVE = 0; |
69 | |
69 | |
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94 | When called in void context, nothing is returned. In other contexts, |
94 | When called in void context, nothing is returned. In other contexts, |
95 | C<http_request> returns a "cancellation guard" - you have to keep the |
95 | C<http_request> returns a "cancellation guard" - you have to keep the |
96 | object at least alive until the callback get called. If the object gets |
96 | object at least alive until the callback get called. If the object gets |
97 | destroyed before the callbakc is called, the request will be cancelled. |
97 | destroyed before the callbakc is called, the request will be cancelled. |
98 | |
98 | |
99 | The callback will be called with the response data as first argument |
99 | The callback will be called with the response body data as first argument |
100 | (or C<undef> if it wasn't available due to errors), and a hash-ref with |
100 | (or C<undef> if an error occured), and a hash-ref with response headers as |
101 | response headers as second argument. |
101 | second argument. |
102 | |
102 | |
103 | All the headers in that hash are lowercased. In addition to the response |
103 | All the headers in that hash are lowercased. In addition to the response |
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 C<\x00>. |
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<< $headers->{Status} >> will be C<59x> |
114 | and the C<Reason> pseudo-header will contain an error message. |
114 | (usually C<599>) and the C<Reason> pseudo-header will contain an error |
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115 | message. |
115 | |
116 | |
116 | A typical callback might look like this: |
117 | A typical callback might look like this: |
117 | |
118 | |
118 | sub { |
119 | sub { |
119 | my ($body, $hdr) = @_; |
120 | my ($body, $hdr) = @_; |
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137 | |
138 | |
138 | =item headers => hashref |
139 | =item headers => hashref |
139 | |
140 | |
140 | The request headers to use. Currently, C<http_request> may provide its |
141 | The request headers to use. Currently, C<http_request> may provide its |
141 | own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers |
142 | own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers |
142 | and will provide defaults for C<User-Agent:> and C<Referer:>. |
143 | and will provide defaults for C<User-Agent:> and C<Referer:> (this can be |
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144 | suppressed by using C<undef> for these headers in which case they won't be |
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145 | sent at all). |
143 | |
146 | |
144 | =item timeout => $seconds |
147 | =item timeout => $seconds |
145 | |
148 | |
146 | The time-out to use for various stages - each connect attempt will reset |
149 | The time-out to use for various stages - each connect attempt will reset |
147 | the timeout, as will read or write activity. Default timeout is 5 minutes. |
150 | the timeout, as will read or write activity. Default timeout is 5 minutes. |
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149 | =item proxy => [$host, $port[, $scheme]] or undef |
152 | =item proxy => [$host, $port[, $scheme]] or undef |
150 | |
153 | |
151 | Use the given http proxy for all requests. If not specified, then the |
154 | Use the given http proxy for all requests. If not specified, then the |
152 | default proxy (as specified by C<$ENV{http_proxy}>) is used. |
155 | default proxy (as specified by C<$ENV{http_proxy}>) is used. |
153 | |
156 | |
154 | C<$scheme> must be either missing or C<http> for HTTP, or C<https> for |
157 | C<$scheme> must be either missing, C<http> for HTTP or C<https> for |
155 | HTTPS. |
158 | HTTPS. |
156 | |
159 | |
157 | =item body => $string |
160 | =item body => $string |
158 | |
161 | |
159 | The request body, usually empty. Will be-sent as-is (future versions of |
162 | The request body, usually empty. Will be-sent as-is (future versions of |
… | |
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165 | based on the original netscape specification. |
168 | based on the original netscape specification. |
166 | |
169 | |
167 | The C<$hash_ref> must be an (initially empty) hash reference which will |
170 | 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 |
171 | 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 |
172 | persistent storage with something like JSON or Storable, but this is not |
170 | recommended, as expire times are currently being ignored. |
173 | recommended, as expiry times are currently being ignored. |
171 | |
174 | |
172 | Note that this cookie implementation is not of very high quality, nor |
175 | 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 |
176 | 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 |
177 | 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 |
178 | cookie-using sites working. Cookies are a privacy disaster, do not use |
176 | them unless required to. |
179 | them unless required to. |
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180 | |
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181 | =item tls_ctx => $scheme | $tls_ctx |
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182 | |
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183 | Specifies the AnyEvent::TLS context to be used for https connections. This |
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184 | parameter follows the same rules as the C<tls_ctx> parameter to |
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185 | L<AnyEvent::Handle>, but additionally, the two strings C<low> or |
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186 | C<high> can be specified, which give you a predefined low-security (no |
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187 | verification, highest compatibility) and high-security (CA and common-name |
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188 | verification) TLS context. |
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189 | |
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190 | The default for this option is C<low>, which could be interpreted as "give |
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191 | me the page, no matter what". |
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192 | |
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193 | =item on_header => $callback->($headers) |
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194 | |
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195 | When specified, this callback will be called with the header hash as soon |
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196 | as headers have been successfully received from the remote server (not on |
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197 | locally-generated errors). |
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198 | |
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199 | It has to return either true (in which case AnyEvent::HTTP will continue), |
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200 | or false, in which case AnyEvent::HTTP will cancel the download (and call |
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201 | the finish callback with an error code of C<598>). |
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202 | |
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203 | This callback is useful, among other things, to quickly reject unwanted |
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204 | content, which, if it is supposed to be rare, can be faster than first |
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205 | doing a C<HEAD> request. |
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206 | |
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207 | Example: cancel the request unless the content-type is "text/html". |
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208 | |
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209 | on_header => sub { |
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210 | $_[0]{"content-type"} =~ /^text\/html\s*(?:;|$)/ |
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211 | }, |
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212 | |
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213 | =item on_body => $callback->($partial_body, $headers) |
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214 | |
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215 | When specified, all body data will be passed to this callback instead of |
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216 | to the completion callback. The completion callback will get the empty |
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217 | string instead of the body data. |
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218 | |
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219 | It has to return either true (in which case AnyEvent::HTTP will continue), |
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220 | or false, in which case AnyEvent::HTTP will cancel the download (and call |
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221 | the completion callback with an error code of C<598>). |
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222 | |
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223 | This callback is useful when the data is too large to be held in memory |
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224 | (so the callback writes it to a file) or when only some information should |
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225 | be extracted, or when the body should be processed incrementally. |
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226 | |
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227 | It is usually preferred over doing your own body handling via |
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228 | C<want_body_handle>, but in case of streaming APIs, where HTTP is |
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229 | only used to create a connection, C<want_body_handle> is the better |
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230 | alternative, as it allows you to install your own event handler, reducing |
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231 | resource usage. |
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232 | |
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233 | =item want_body_handle => $enable |
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234 | |
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235 | When enabled (default is disabled), the behaviour of AnyEvent::HTTP |
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236 | changes considerably: after parsing the headers, and instead of |
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237 | downloading the body (if any), the completion callback will be |
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238 | called. Instead of the C<$body> argument containing the body data, the |
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239 | callback will receive the L<AnyEvent::Handle> object associated with the |
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240 | connection. In error cases, C<undef> will be passed. When there is no body |
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241 | (e.g. status C<304>), the empty string will be passed. |
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242 | |
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243 | The handle object might or might not be in TLS mode, might be connected to |
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244 | a proxy, be a persistent connection etc., and configured in unspecified |
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245 | ways. The user is responsible for this handle (it will not be used by this |
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246 | module anymore). |
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247 | |
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248 | This is useful with some push-type services, where, after the initial |
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249 | headers, an interactive protocol is used (typical example would be the |
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250 | push-style twitter API which starts a JSON/XML stream). |
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251 | |
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252 | If you think you need this, first have a look at C<on_body>, to see if |
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253 | that doesn't solve your problem in a better way. |
177 | |
254 | |
178 | =back |
255 | =back |
179 | |
256 | |
180 | Example: make a simple HTTP GET request for http://www.nethype.de/ |
257 | Example: make a simple HTTP GET request for http://www.nethype.de/ |
181 | |
258 | |
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237 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
314 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
238 | |
315 | |
239 | _slot_schedule $_[0]; |
316 | _slot_schedule $_[0]; |
240 | } |
317 | } |
241 | |
318 | |
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319 | our $qr_nl = qr{\015?\012}; |
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320 | our $qr_nlnl = qr{(?<![^\012])\015?\012}; |
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321 | |
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322 | our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; |
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323 | our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; |
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324 | |
242 | sub http_request($$@) { |
325 | sub http_request($$@) { |
243 | my $cb = pop; |
326 | my $cb = pop; |
244 | my ($method, $url, %arg) = @_; |
327 | my ($method, $url, %arg) = @_; |
245 | |
328 | |
246 | my %hdr; |
329 | my %hdr; |
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330 | |
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331 | $arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" || !exists $arg{tls_ctx}; |
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332 | $arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high"; |
247 | |
333 | |
248 | $method = uc $method; |
334 | $method = uc $method; |
249 | |
335 | |
250 | if (my $hdr = $arg{headers}) { |
336 | if (my $hdr = $arg{headers}) { |
251 | while (my ($k, $v) = each %$hdr) { |
337 | while (my ($k, $v) = each %$hdr) { |
… | |
… | |
253 | } |
339 | } |
254 | } |
340 | } |
255 | |
341 | |
256 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
342 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
257 | |
343 | |
258 | return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url }) |
344 | return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url }) |
259 | if $recurse < 0; |
345 | if $recurse < 0; |
260 | |
346 | |
261 | my $proxy = $arg{proxy} || $PROXY; |
347 | my $proxy = $arg{proxy} || $PROXY; |
262 | my $timeout = $arg{timeout} || $TIMEOUT; |
348 | my $timeout = $arg{timeout} || $TIMEOUT; |
263 | |
349 | |
264 | $hdr{"user-agent"} ||= $USERAGENT; |
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265 | |
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266 | my ($scheme, $authority, $upath, $query, $fragment) = |
350 | my ($uscheme, $uauthority, $upath, $query, $fragment) = |
267 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; |
351 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; |
268 | |
352 | |
269 | $scheme = lc $scheme; |
353 | $uscheme = lc $uscheme; |
270 | |
354 | |
271 | my $uport = $scheme eq "http" ? 80 |
355 | my $uport = $uscheme eq "http" ? 80 |
272 | : $scheme eq "https" ? 443 |
356 | : $uscheme eq "https" ? 443 |
273 | : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url }); |
357 | : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url }); |
274 | |
358 | |
275 | $hdr{referer} ||= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic |
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276 | |
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277 | $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
359 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
278 | or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url }); |
360 | or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url }); |
279 | |
361 | |
280 | my $uhost = $1; |
362 | my $uhost = $1; |
281 | $uport = $2 if defined $2; |
363 | $uport = $2 if defined $2; |
282 | |
364 | |
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365 | $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"; |
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366 | |
283 | $uhost =~ s/^\[(.*)\]$/$1/; |
367 | $uhost =~ s/^\[(.*)\]$/$1/; |
284 | $upath .= "?$query" if length $query; |
368 | $upath .= "?$query" if length $query; |
285 | |
369 | |
286 | $upath =~ s%^/?%/%; |
370 | $upath =~ s%^/?%/%; |
287 | |
371 | |
288 | # cookie processing |
372 | # cookie processing |
289 | if (my $jar = $arg{cookie_jar}) { |
373 | if (my $jar = $arg{cookie_jar}) { |
290 | %$jar = () if $jar->{version} < 1; |
374 | %$jar = () if $jar->{version} != 1; |
291 | |
375 | |
292 | my @cookie; |
376 | my @cookie; |
293 | |
377 | |
294 | while (my ($chost, $v) = each %$jar) { |
378 | while (my ($chost, $v) = each %$jar) { |
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379 | if ($chost =~ /^\./) { |
295 | next unless $chost eq substr $uhost, -length $chost; |
380 | next unless $chost eq substr $uhost, -length $chost; |
296 | next unless $chost =~ /^\./; |
381 | } elsif ($chost =~ /\./) { |
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382 | next unless $chost eq $uhost; |
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383 | } else { |
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384 | next; |
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385 | } |
297 | |
386 | |
298 | while (my ($cpath, $v) = each %$v) { |
387 | while (my ($cpath, $v) = each %$v) { |
299 | next unless $cpath eq substr $upath, 0, length $cpath; |
388 | next unless $cpath eq substr $upath, 0, length $cpath; |
300 | |
389 | |
301 | while (my ($k, $v) = each %$v) { |
390 | while (my ($k, $v) = each %$v) { |
302 | next if $scheme ne "https" && exists $v->{secure}; |
391 | next if $uscheme ne "https" && exists $v->{secure}; |
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392 | my $value = $v->{value}; |
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393 | $value =~ s/([\\"])/\\$1/g; |
303 | push @cookie, "$k=$v->{value}"; |
394 | push @cookie, "$k=\"$value\""; |
304 | } |
395 | } |
305 | } |
396 | } |
306 | } |
397 | } |
307 | |
398 | |
308 | $hdr{cookie} = join "; ", @cookie |
399 | $hdr{cookie} = join "; ", @cookie |
309 | if @cookie; |
400 | if @cookie; |
310 | } |
401 | } |
311 | |
402 | |
312 | my ($rhost, $rport, $rpath); # request host, port, path |
403 | my ($rhost, $rport, $rscheme, $rpath); # request host, port, path |
313 | |
404 | |
314 | if ($proxy) { |
405 | if ($proxy) { |
315 | ($rhost, $rport, $scheme) = @$proxy; |
406 | ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy); |
316 | $rpath = $url; |
407 | |
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408 | $rscheme = "http" unless defined $rscheme; |
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409 | |
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410 | # don't support https requests over https-proxy transport, |
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411 | # can't be done with tls as spec'ed, unless you double-encrypt. |
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412 | $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; |
317 | } else { |
413 | } else { |
318 | ($rhost, $rport, $rpath) = ($uhost, $uport, $upath); |
414 | ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); |
319 | $hdr{host} = $uhost; |
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320 | } |
415 | } |
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416 | |
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417 | # leave out fragment and query string, just a heuristic |
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418 | $hdr{referer} ||= "$uscheme://$uauthority$upath" unless exists $hdr{referer}; |
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419 | $hdr{"user-agent"} ||= $USERAGENT unless exists $hdr{"user-agent"}; |
321 | |
420 | |
322 | $hdr{"content-length"} = length $arg{body}; |
421 | $hdr{"content-length"} = length $arg{body}; |
323 | |
422 | |
324 | my %state = (connect_guard => 1); |
423 | my %state = (connect_guard => 1); |
325 | |
424 | |
… | |
… | |
328 | |
427 | |
329 | return unless $state{connect_guard}; |
428 | return unless $state{connect_guard}; |
330 | |
429 | |
331 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { |
430 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { |
332 | $state{fh} = shift |
431 | $state{fh} = shift |
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432 | or do { |
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433 | my $err = "$!"; |
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434 | %state = (); |
333 | or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url }); |
435 | return $cb->(undef, { Status => 599, Reason => $err, URL => $url }); |
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436 | }; |
334 | |
437 | |
335 | delete $state{connect_guard}; # reduce memory usage, save a tree |
438 | pop; # free memory, save a tree |
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439 | |
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440 | return unless delete $state{connect_guard}; |
336 | |
441 | |
337 | # get handle |
442 | # get handle |
338 | $state{handle} = new AnyEvent::Handle |
443 | $state{handle} = new AnyEvent::Handle |
339 | fh => $state{fh}, |
444 | fh => $state{fh}, |
340 | ($scheme eq "https" ? (tls => "connect") : ()); |
445 | timeout => $timeout, |
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446 | peername => $rhost, |
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447 | tls_ctx => $arg{tls_ctx}; |
341 | |
448 | |
342 | # limit the number of persistent connections |
449 | # limit the number of persistent connections |
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450 | # keepalive not yet supported |
343 | if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
451 | if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
344 | ++$KA_COUNT{$_[1]}; |
452 | ++$KA_COUNT{$_[1]}; |
345 | $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; |
453 | $state{handle}{ka_count_guard} = AnyEvent::Util::guard { |
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454 | --$KA_COUNT{$_[1]} |
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455 | }; |
346 | $hdr{connection} = "keep-alive"; |
456 | $hdr{connection} = "keep-alive"; |
347 | delete $hdr{connection}; # keep-alive not yet supported |
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348 | } else { |
457 | } else { |
349 | delete $hdr{connection}; |
458 | delete $hdr{connection}; |
350 | } |
459 | } |
351 | |
460 | |
352 | # (re-)configure handle |
461 | # (re-)configure handle |
353 | $state{handle}->timeout ($timeout); |
|
|
354 | $state{handle}->on_error (sub { |
462 | $state{handle}->on_error (sub { |
355 | my $errno = "$!"; |
|
|
356 | %state = (); |
463 | %state = (); |
357 | $cb->(undef, { Status => 599, Reason => $errno, URL => $url }); |
464 | $cb->(undef, { Status => 599, Reason => $_[2], URL => $url }); |
358 | }); |
465 | }); |
359 | $state{handle}->on_eof (sub { |
466 | $state{handle}->on_eof (sub { |
360 | %state = (); |
467 | %state = (); |
361 | $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url }); |
468 | $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url }); |
362 | }); |
469 | }); |
363 | |
470 | |
|
|
471 | $state{handle}->starttls ("connect") if $rscheme eq "https"; |
|
|
472 | |
|
|
473 | # handle actual, non-tunneled, request |
|
|
474 | my $handle_actual_request = sub { |
|
|
475 | $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; |
|
|
476 | |
364 | # send request |
477 | # send request |
365 | $state{handle}->push_write ( |
478 | $state{handle}->push_write ( |
366 | "$method $rpath HTTP/1.0\015\012" |
479 | "$method $rpath HTTP/1.0\015\012" |
367 | . (join "", map "$_: $hdr{$_}\015\012", keys %hdr) |
480 | . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr) |
368 | . "\015\012" |
481 | . "\015\012" |
369 | . (delete $arg{body}) |
482 | . (delete $arg{body}) |
370 | ); |
|
|
371 | |
|
|
372 | %hdr = (); # reduce memory usage, save a kitten |
|
|
373 | |
|
|
374 | # status line |
|
|
375 | $state{handle}->push_read (line => qr/\015?\012/, sub { |
|
|
376 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
|
|
377 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url })); |
|
|
378 | |
|
|
379 | my %hdr = ( # response headers |
|
|
380 | HTTPVersion => "\x00$1", |
|
|
381 | Status => "\x00$2", |
|
|
382 | Reason => "\x00$3", |
|
|
383 | URL => "\x00$url" |
|
|
384 | ); |
483 | ); |
385 | |
484 | |
|
|
485 | %hdr = (); # reduce memory usage, save a kitten |
|
|
486 | |
|
|
487 | # status line |
|
|
488 | $state{handle}->push_read (line => $qr_nl, sub { |
|
|
489 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
|
|
490 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url })); |
|
|
491 | |
|
|
492 | my %hdr = ( # response headers |
|
|
493 | HTTPVersion => ",$1", |
|
|
494 | Status => ",$2", |
|
|
495 | Reason => ",$3", |
|
|
496 | URL => ",$url" |
|
|
497 | ); |
|
|
498 | |
386 | # headers, could be optimized a bit |
499 | # headers, could be optimized a bit |
387 | $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { |
500 | $state{handle}->unshift_read (line => $qr_nlnl, sub { |
388 | for ("$_[1]\012") { |
501 | for ("$_[1]") { |
389 | # we support spaces in field names, as lotus domino |
502 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
390 | # creates them. |
503 | |
|
|
504 | # things seen, not parsed: |
|
|
505 | # p3pP="NON CUR OTPi OUR NOR UNI" |
|
|
506 | |
391 | $hdr{lc $1} .= "\x00$2" |
507 | $hdr{lc $1} .= ",$2" |
392 | while /\G |
508 | while /\G |
393 | ([^:\000-\037]+): |
509 | ([^:\000-\037]*): |
394 | [\011\040]* |
510 | [\011\040]* |
395 | ((?: [^\015\012]+ | \015?\012[\011\040] )*) |
511 | ((?: [^\012]+ | \012[\011\040] )*) |
396 | \015?\012 |
512 | \012 |
397 | /gxc; |
513 | /gxc; |
398 | |
514 | |
399 | /\G$/ |
515 | /\G$/ |
400 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url })); |
516 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url })); |
401 | } |
|
|
402 | |
|
|
403 | substr $_, 0, 1, "" |
|
|
404 | for values %hdr; |
|
|
405 | |
|
|
406 | my $finish = sub { |
|
|
407 | %state = (); |
|
|
408 | |
|
|
409 | # set-cookie processing |
|
|
410 | if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) { |
|
|
411 | for (split /\x00/, $hdr{"set-cookie"}) { |
|
|
412 | my ($cookie, @arg) = split /;\s*/; |
|
|
413 | my ($name, $value) = split /=/, $cookie, 2; |
|
|
414 | my %kv = (value => $value, map { split /=/, $_, 2 } @arg); |
|
|
415 | |
|
|
416 | my $cdom = (delete $kv{domain}) || $uhost; |
|
|
417 | my $cpath = (delete $kv{path}) || "/"; |
|
|
418 | |
|
|
419 | $cdom =~ s/^\.?/./; # make sure it starts with a "." |
|
|
420 | |
|
|
421 | next if $cdom =~ /\.$/; |
|
|
422 | |
|
|
423 | # this is not rfc-like and not netscape-like. go figure. |
|
|
424 | my $ndots = $cdom =~ y/.//; |
|
|
425 | next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2); |
|
|
426 | |
|
|
427 | # store it |
|
|
428 | $arg{cookie_jar}{version} = 1; |
|
|
429 | $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv; |
|
|
430 | } |
|
|
431 | } |
517 | } |
432 | |
518 | |
|
|
519 | substr $_, 0, 1, "" |
|
|
520 | for values %hdr; |
|
|
521 | |
|
|
522 | # redirect handling |
433 | # microsoft and other shitheads don't give a shit for following standards, |
523 | # microsoft and other shitheads don't give a shit for following standards, |
434 | # try to support some common forms of broken Location headers. |
524 | # try to support some common forms of broken Location headers. |
435 | if ($_[1]{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { |
525 | if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { |
436 | $_[1]{location} =~ s/^\.\/+//; |
526 | $hdr{location} =~ s/^\.\/+//; |
437 | |
527 | |
438 | my $url = "$scheme://$uhost:$uport"; |
528 | my $url = "$rscheme://$uhost:$uport"; |
439 | |
529 | |
440 | unless ($_[1]{location} =~ s/^\///) { |
530 | unless ($hdr{location} =~ s/^\///) { |
441 | $url .= $upath; |
531 | $url .= $upath; |
442 | $url =~ s/\/[^\/]*$//; |
532 | $url =~ s/\/[^\/]*$//; |
443 | } |
533 | } |
444 | |
534 | |
445 | $_[1]{location} = "$url/$_[1]{location}"; |
535 | $hdr{location} = "$url/$hdr{location}"; |
446 | } |
536 | } |
447 | |
537 | |
|
|
538 | my $redirect; |
|
|
539 | |
|
|
540 | if ($recurse) { |
448 | if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") { |
541 | if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") { |
449 | # apparently, mozilla et al. just change POST to GET here |
542 | # apparently, mozilla et al. just change POST to GET here |
450 | # more research is needed before we do the same |
543 | # more research is needed before we do the same |
451 | http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
544 | $redirect = 1; |
452 | } elsif ($_[1]{Status} == 303 && $recurse) { |
545 | } elsif ($hdr{Status} == 303) { |
453 | # even http/1.1 is unlear on how to mutate the method |
546 | # even http/1.1 is unclear on how to mutate the method |
454 | $method = "GET" unless $method eq "HEAD"; |
547 | $method = "GET" unless $method eq "HEAD"; |
|
|
548 | $redirect = 1; |
|
|
549 | } elsif ($hdr{Status} == 307 && $method =~ /^(?:GET|HEAD)$/) { |
|
|
550 | $redirect = 1; |
|
|
551 | } |
|
|
552 | } |
|
|
553 | |
|
|
554 | my $finish = sub { |
|
|
555 | $state{handle}->destroy if $state{handle}; |
|
|
556 | %state = (); |
|
|
557 | |
|
|
558 | # set-cookie processing |
|
|
559 | if ($arg{cookie_jar}) { |
|
|
560 | for ($_[1]{"set-cookie"}) { |
|
|
561 | # parse NAME=VALUE |
|
|
562 | my @kv; |
|
|
563 | |
|
|
564 | while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) { |
|
|
565 | my $name = $1; |
|
|
566 | my $value = $3; |
|
|
567 | |
|
|
568 | unless ($value) { |
|
|
569 | $value = $2; |
|
|
570 | $value =~ s/\\(.)/$1/gs; |
|
|
571 | } |
|
|
572 | |
|
|
573 | push @kv, $name => $value; |
|
|
574 | |
|
|
575 | last unless /\G\s*;/gc; |
|
|
576 | } |
|
|
577 | |
|
|
578 | last unless @kv; |
|
|
579 | |
|
|
580 | my $name = shift @kv; |
|
|
581 | my %kv = (value => shift @kv, @kv); |
|
|
582 | |
|
|
583 | my $cdom; |
|
|
584 | my $cpath = (delete $kv{path}) || "/"; |
|
|
585 | |
|
|
586 | if (exists $kv{domain}) { |
|
|
587 | $cdom = delete $kv{domain}; |
|
|
588 | |
|
|
589 | $cdom =~ s/^\.?/./; # make sure it starts with a "." |
|
|
590 | |
|
|
591 | next if $cdom =~ /\.$/; |
|
|
592 | |
|
|
593 | # this is not rfc-like and not netscape-like. go figure. |
|
|
594 | my $ndots = $cdom =~ y/.//; |
|
|
595 | next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2); |
|
|
596 | } else { |
|
|
597 | $cdom = $uhost; |
|
|
598 | } |
|
|
599 | |
|
|
600 | # store it |
|
|
601 | $arg{cookie_jar}{version} = 1; |
|
|
602 | $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv; |
|
|
603 | |
|
|
604 | redo if /\G\s*,/gc; |
|
|
605 | } |
|
|
606 | } |
|
|
607 | |
|
|
608 | if ($redirect && exists $hdr{location}) { |
|
|
609 | # we ignore any errors, as it is very common to receive |
|
|
610 | # Content-Length != 0 but no actual body |
|
|
611 | # we also access %hdr, as $_[1] might be an erro |
455 | http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
612 | http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb); |
456 | } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) { |
613 | } else { |
457 | http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
614 | $cb->($_[0], $_[1]); |
|
|
615 | } |
|
|
616 | }; |
|
|
617 | |
|
|
618 | my $len = $hdr{"content-length"}; |
|
|
619 | |
|
|
620 | if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) { |
|
|
621 | $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url }); |
|
|
622 | } elsif ( |
|
|
623 | $hdr{Status} =~ /^(?:1..|[23]04)$/ |
|
|
624 | or $method eq "HEAD" |
|
|
625 | or (defined $len && !$len) |
|
|
626 | ) { |
|
|
627 | # no body |
|
|
628 | $finish->("", \%hdr); |
458 | } else { |
629 | } else { |
459 | $cb->($_[0], $_[1]); |
630 | # body handling, four different code paths |
|
|
631 | # for want_body_handle, on_body (2x), normal (2x) |
|
|
632 | # we might read too much here, but it does not matter yet (no pers. connections) |
|
|
633 | if (!$redirect && $arg{want_body_handle}) { |
|
|
634 | $_[0]->on_eof (undef); |
|
|
635 | $_[0]->on_error (undef); |
|
|
636 | $_[0]->on_read (undef); |
|
|
637 | |
|
|
638 | $finish->(delete $state{handle}, \%hdr); |
|
|
639 | |
|
|
640 | } elsif ($arg{on_body}) { |
|
|
641 | $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) }); |
|
|
642 | if ($len) { |
|
|
643 | $_[0]->on_eof (undef); |
|
|
644 | $_[0]->on_read (sub { |
|
|
645 | $len -= length $_[0]{rbuf}; |
|
|
646 | |
|
|
647 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
|
|
648 | or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url }); |
|
|
649 | |
|
|
650 | $len > 0 |
|
|
651 | or $finish->("", \%hdr); |
|
|
652 | }); |
|
|
653 | } else { |
|
|
654 | $_[0]->on_eof (sub { |
|
|
655 | $finish->("", \%hdr); |
|
|
656 | }); |
|
|
657 | $_[0]->on_read (sub { |
|
|
658 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
|
|
659 | or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url }); |
|
|
660 | }); |
|
|
661 | } |
|
|
662 | } else { |
|
|
663 | $_[0]->on_eof (undef); |
|
|
664 | |
|
|
665 | if ($len) { |
|
|
666 | $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) }); |
|
|
667 | $_[0]->on_read (sub { |
|
|
668 | $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr) |
|
|
669 | if $len <= length $_[0]{rbuf}; |
|
|
670 | }); |
|
|
671 | } else { |
|
|
672 | $_[0]->on_error (sub { |
|
|
673 | $! == Errno::EPIPE || !$! |
|
|
674 | ? $finish->(delete $_[0]{rbuf}, \%hdr) |
|
|
675 | : $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }); |
|
|
676 | }); |
|
|
677 | $_[0]->on_read (sub { }); |
|
|
678 | } |
|
|
679 | } |
460 | } |
680 | } |
461 | }; |
681 | }); |
|
|
682 | }); |
|
|
683 | }; |
462 | |
684 | |
463 | if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") { |
685 | # now handle proxy-CONNECT method |
464 | $finish->(undef, \%hdr); |
686 | if ($proxy && $uscheme eq "https") { |
|
|
687 | # oh dear, we have to wrap it into a connect request |
|
|
688 | |
|
|
689 | # maybe re-use $uauthority with patched port? |
|
|
690 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); |
|
|
691 | $state{handle}->push_read (line => $qr_nlnl, sub { |
|
|
692 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
|
|
693 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url })); |
|
|
694 | |
|
|
695 | if ($2 == 200) { |
|
|
696 | $rpath = $upath; |
|
|
697 | &$handle_actual_request; |
465 | } else { |
698 | } else { |
466 | if (exists $hdr{"content-length"}) { |
699 | %state = (); |
467 | $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { |
700 | $cb->(undef, { Status => $2, Reason => $3, URL => $url }); |
468 | # could cache persistent connection now |
|
|
469 | if ($hdr{connection} =~ /\bkeep-alive\b/i) { |
|
|
470 | # but we don't, due to misdesigns, this is annoyingly complex |
|
|
471 | }; |
|
|
472 | |
|
|
473 | $finish->($_[1], \%hdr); |
|
|
474 | }); |
|
|
475 | } else { |
|
|
476 | # too bad, need to read until we get an error or EOF, |
|
|
477 | # no way to detect winged data. |
|
|
478 | $_[0]->on_error (sub { |
|
|
479 | $finish->($_[0]{rbuf}, \%hdr); |
|
|
480 | }); |
|
|
481 | $_[0]->on_eof (undef); |
|
|
482 | $_[0]->on_read (sub { }); |
|
|
483 | } |
|
|
484 | } |
701 | } |
485 | }); |
702 | }); |
|
|
703 | } else { |
|
|
704 | &$handle_actual_request; |
486 | }); |
705 | } |
487 | }, sub { |
706 | |
488 | $timeout |
707 | }, $arg{on_prepare} || sub { $timeout }; |
489 | }; |
|
|
490 | }; |
708 | }; |
491 | |
709 | |
492 | defined wantarray && AnyEvent::Util::guard { %state = () } |
710 | defined wantarray && AnyEvent::Util::guard { %state = () } |
493 | } |
711 | } |
494 | |
712 | |
… | |
… | |
524 | The default value for the C<recurse> request parameter (default: C<10>). |
742 | The default value for the C<recurse> request parameter (default: C<10>). |
525 | |
743 | |
526 | =item $AnyEvent::HTTP::USERAGENT |
744 | =item $AnyEvent::HTTP::USERAGENT |
527 | |
745 | |
528 | The default value for the C<User-Agent> header (the default is |
746 | The default value for the C<User-Agent> header (the default is |
529 | C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
747 | C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
530 | |
748 | |
531 | =item $AnyEvent::HTTP::MAX_PERSISTENT |
749 | =item $AnyEvent::HTTP::MAX_PER_HOST |
532 | |
750 | |
533 | The maximum number of persistent connections to keep open (default: 8). |
751 | The maximum number of concurrent connections to the same host (identified |
|
|
752 | by the hostname). If the limit is exceeded, then the additional requests |
|
|
753 | are queued until previous connections are closed. |
534 | |
754 | |
535 | Not implemented currently. |
755 | The default value for this is C<4>, and it is highly advisable to not |
536 | |
756 | increase it. |
537 | =item $AnyEvent::HTTP::PERSISTENT_TIMEOUT |
|
|
538 | |
|
|
539 | The maximum time to cache a persistent connection, in seconds (default: 2). |
|
|
540 | |
|
|
541 | Not implemented currently. |
|
|
542 | |
757 | |
543 | =item $AnyEvent::HTTP::ACTIVE |
758 | =item $AnyEvent::HTTP::ACTIVE |
544 | |
759 | |
545 | The number of active connections. This is not the number of currently |
760 | The number of active connections. This is not the number of currently |
546 | running requests, but the number of currently open and non-idle TCP |
761 | running requests, but the number of currently open and non-idle TCP |
… | |
… | |
564 | =head1 AUTHOR |
779 | =head1 AUTHOR |
565 | |
780 | |
566 | Marc Lehmann <schmorp@schmorp.de> |
781 | Marc Lehmann <schmorp@schmorp.de> |
567 | http://home.schmorp.de/ |
782 | http://home.schmorp.de/ |
568 | |
783 | |
|
|
784 | With many thanks to Дмитрий Шалашов, who provided countless |
|
|
785 | testcases and bugreports. |
|
|
786 | |
569 | =cut |
787 | =cut |
570 | |
788 | |
571 | 1 |
789 | 1 |
572 | |
790 | |