1 | use Coro; |
1 | use Coro; |
2 | use Coro::Semaphore; |
2 | use Coro::Semaphore; |
3 | use Coro::Event; |
3 | use Coro::Event; |
4 | use Coro::Socket; |
4 | use Coro::Socket; |
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5 | |
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6 | use HTTP::Date; |
5 | |
7 | |
6 | no utf8; |
8 | no utf8; |
7 | use bytes; |
9 | use bytes; |
8 | |
10 | |
9 | # at least on my machine, this thingy serves files |
11 | # at least on my machine, this thingy serves files |
… | |
… | |
25 | my $level = shift; |
27 | my $level = shift; |
26 | my $format = shift; |
28 | my $format = shift; |
27 | printf "---: $format\n", @_; |
29 | printf "---: $format\n", @_; |
28 | } |
30 | } |
29 | |
31 | |
30 | my $connections = new Coro::Semaphore $MAX_CONNECTS; |
32 | our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; |
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33 | |
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34 | our $wait_factor = 0.95; |
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35 | |
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36 | our @transfers = ( |
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37 | [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1], |
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38 | [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1], |
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39 | ); |
31 | |
40 | |
32 | my @newcons; |
41 | my @newcons; |
33 | my @pool; |
42 | my @pool; |
34 | |
43 | |
35 | # one "execution thread" |
44 | # one "execution thread" |
… | |
… | |
57 | Listen => 50, |
66 | Listen => 50, |
58 | or die "unable to start server"; |
67 | or die "unable to start server"; |
59 | |
68 | |
60 | push @listen_sockets, $http_port; |
69 | push @listen_sockets, $http_port; |
61 | |
70 | |
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71 | our $NOW; |
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72 | our $HTTP_NOW; |
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73 | |
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74 | Event->timer(interval => 1, hard => 1, cb => sub { |
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75 | $NOW = time; |
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76 | $HTTP_NOW = time2str $NOW; |
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77 | })->now; |
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78 | |
62 | # the "main thread" |
79 | # the "main thread" |
63 | async { |
80 | async { |
64 | slog 1, "accepting connections"; |
81 | slog 1, "accepting connections"; |
65 | while () { |
82 | while () { |
66 | $connections->down; |
83 | $connections->down; |
67 | push @newcons, [$http_port->accept]; |
84 | push @newcons, [$http_port->accept]; |
68 | #slog 3, "accepted @$connections ".scalar(@pool); |
85 | #slog 3, "accepted @$connections ".scalar(@pool); |
69 | $::NOW = time; |
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70 | if (@pool) { |
86 | if (@pool) { |
71 | (pop @pool)->ready; |
87 | (pop @pool)->ready; |
72 | } else { |
88 | } else { |
73 | async \&handler; |
89 | async \&handler; |
74 | } |
90 | } |
… | |
… | |
154 | my ($self, $code, $msg, $hdr, $content) = @_; |
170 | my ($self, $code, $msg, $hdr, $content) = @_; |
155 | my $res = "HTTP/1.1 $code $msg\015\012"; |
171 | my $res = "HTTP/1.1 $code $msg\015\012"; |
156 | |
172 | |
157 | $self->{h}{connection} ||= $hdr->{Connection}; |
173 | $self->{h}{connection} ||= $hdr->{Connection}; |
158 | |
174 | |
159 | $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( |
175 | $res .= "Date: $HTTP_NOW\015\012"; |
160 | |
176 | |
161 | while (my ($h, $v) = each %$hdr) { |
177 | while (my ($h, $v) = each %$hdr) { |
162 | $res .= "$h: $v\015\012" |
178 | $res .= "$h: $v\015\012" |
163 | } |
179 | } |
164 | $res .= "\015\012"; |
180 | $res .= "\015\012"; |
… | |
… | |
177 | sub err { |
193 | sub err { |
178 | my $self = shift; |
194 | my $self = shift; |
179 | my ($code, $msg, $hdr, $content) = @_; |
195 | my ($code, $msg, $hdr, $content) = @_; |
180 | |
196 | |
181 | unless (defined $content) { |
197 | unless (defined $content) { |
182 | $content = "$code $msg"; |
198 | $content = "$code $msg\n"; |
183 | $hdr->{"Content-Type"} = "text/plain"; |
199 | $hdr->{"Content-Type"} = "text/plain"; |
184 | $hdr->{"Content-Length"} = length $content; |
200 | $hdr->{"Content-Length"} = length $content; |
185 | } |
201 | } |
186 | $hdr->{"Connection"} = "close"; |
202 | $hdr->{"Connection"} = "close"; |
187 | |
203 | |
188 | $self->response($code, $msg, $hdr, $content); |
204 | $self->response($code, $msg, $hdr, $content); |
189 | |
205 | |
190 | die bless {}, err::; |
206 | die bless {}, err::; |
191 | } |
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192 | |
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193 | sub err_blocked { |
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194 | my $self = shift; |
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195 | my $ip = $self->{remote_addr}; |
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196 | my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME; |
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197 | |
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198 | Coro::Event::do_timer(after => 20*rand); |
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199 | |
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200 | $self->err(401, "too many connections", |
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201 | { |
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202 | "Content-Type" => "text/html", |
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203 | "Retry-After" => $::BLOCKTIME, |
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204 | "Warning" => "Please do NOT retry, you have been blocked", |
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205 | "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"", |
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206 | "Connection" => "close", |
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207 | }, |
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208 | <<EOF); |
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209 | <html> |
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210 | <head> |
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211 | <title>Too many connections</title> |
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212 | </head> |
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213 | <body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000"> |
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214 | |
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215 | <p>You have been blocked because you opened too many connections. You |
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216 | may retry at</p> |
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217 | |
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218 | <p><blockquote>$time.</blockquote></p> |
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219 | |
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220 | <p>Until then, each new access will renew the block. You might want to have a |
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221 | look at the <a href="http://www.goof.com/pcg/marc/animefaq.html#connectionlimit">FAQ</a>.</p> |
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222 | |
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223 | </body></html> |
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224 | EOF |
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225 | } |
207 | } |
226 | |
208 | |
227 | sub handle { |
209 | sub handle { |
228 | my $self = shift; |
210 | my $self = shift; |
229 | my $fh = $self->{fh}; |
211 | my $fh = $self->{fh}; |
… | |
… | |
256 | |
238 | |
257 | delete $blocked{$ip}; |
239 | delete $blocked{$ip}; |
258 | } |
240 | } |
259 | |
241 | |
260 | if (%{$conn{$ip}} > $::MAX_CONN_IP) { |
242 | if (%{$conn{$ip}} > $::MAX_CONN_IP) { |
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243 | my $delay = 120; |
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244 | while (%{$conn{$ip}} > $::MAX_CONN_IP) { |
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245 | if ($delay <= 0) { |
261 | $self->slog(2, "blocked ip $ip"); |
246 | $self->slog(2, "blocked ip $ip"); |
262 | $self->err_blocked; |
247 | $self->err_blocked; |
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248 | } else { |
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249 | Coro::Event::do_timer(after => 3); |
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250 | $delay -= 3; |
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251 | } |
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252 | } |
263 | } |
253 | } |
264 | |
254 | |
265 | $req =~ /^(?:\015\012)? |
255 | $req =~ /^(?:\015\012)? |
266 | (GET|HEAD) \040+ |
256 | (GET|HEAD) \040+ |
267 | ([^\040]+) \040+ |
257 | ([^\040]+) \040+ |
… | |
… | |
439 | $idx); |
429 | $idx); |
440 | } |
430 | } |
441 | |
431 | |
442 | sub handle_file { |
432 | sub handle_file { |
443 | my $self = shift; |
433 | my $self = shift; |
444 | my $length = -s _; |
434 | my $length = $self->{stat}[7]; |
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435 | my $queue = $::transfers[$length >= $::TRANSFER_SMALL]; |
445 | my $hdr = { |
436 | my $hdr = { |
446 | "Last-Modified" => time2str ((stat _)[9]), |
437 | "Last-Modified" => time2str ((stat _)[9]), |
447 | }; |
438 | }; |
448 | |
439 | |
449 | my @code = (200, "ok"); |
440 | my @code = (200, "ok"); |
… | |
… | |
461 | } |
452 | } |
462 | goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; |
453 | goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; |
463 | } |
454 | } |
464 | $hdr->{"Content-Range"} = "bytes */$length"; |
455 | $hdr->{"Content-Range"} = "bytes */$length"; |
465 | $hdr->{"Content-Length"} = $length; |
456 | $hdr->{"Content-Length"} = $length; |
466 | $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")"); |
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467 | $self->err(416, "not satisfiable", $hdr, ""); |
457 | $self->err(416, "not satisfiable", $hdr, ""); |
468 | |
458 | |
469 | satisfiable: |
459 | satisfiable: |
470 | # check for segmented downloads |
460 | # check for segmented downloads |
471 | if ($l && $::NO_SEGMENTED) { |
461 | if ($l && $::NO_SEGMENTED) { |
472 | my $delay = 60; |
462 | my $delay = 180; |
473 | while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { |
463 | while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { |
474 | if ($delay <= 0) { |
464 | if ($delay <= 0) { |
475 | $self->err(400, "segmented downloads are not allowed", |
465 | $self->err_segmented_download; |
476 | { "Content-Type" => "text/html", Connection => "close" }, <<EOF); |
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477 | <html> |
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478 | <head> |
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479 | <title>Segmented downloads are not allowed</title> |
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480 | </head> |
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481 | <body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000"> |
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482 | |
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483 | <p>Segmented downloads are not allowed on this server. Please refer to the |
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484 | <a href="http://www.goof.com/pcg/marc/animefaq.html#segmented_downloads">FAQ</a>.</p> |
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485 | |
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486 | </body></html> |
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487 | EOF |
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488 | } else { |
466 | } else { |
489 | Coro::Event::do_timer(after => 3); $delay -= 3; |
467 | Coro::Event::do_timer(after => 3); $delay -= 3; |
490 | } |
468 | } |
491 | } |
469 | } |
492 | } |
470 | } |
… | |
… | |
505 | $hdr->{"Content-Length"} = $length; |
483 | $hdr->{"Content-Length"} = $length; |
506 | |
484 | |
507 | $self->response(@code, $hdr, ""); |
485 | $self->response(@code, $hdr, ""); |
508 | |
486 | |
509 | if ($self->{method} eq "GET") { |
487 | if ($self->{method} eq "GET") { |
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488 | $self->{time} = $::NOW; |
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489 | |
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490 | my $fudge = $queue->[0]->waiters; |
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491 | $fudge = $fudge ? ($fudge+1)/$fudge : 1; |
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492 | |
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493 | $queue->[1] *= $fudge; |
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494 | my $transfer = $queue->[0]->guard; |
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495 | |
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496 | if ($fudge != 1) { |
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497 | $queue->[1] /= $fudge; |
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498 | $queue->[1] = $queue->[1] * $::wait_factor |
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499 | + ($::NOW - $self->{time}) * (1 - $::wait_factor); |
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500 | } |
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501 | $self->{time} = $::NOW; |
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502 | |
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503 | $self->{fh}->writable or return; |
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504 | |
510 | my ($fh, $buf, $r); |
505 | my ($fh, $buf, $r); |
511 | my $current = $Coro::current; |
506 | my $current = $Coro::current; |
512 | open $fh, "<", $self->{path} |
507 | open $fh, "<", $self->{path} |
513 | or die "$self->{path}: late open failure ($!)"; |
508 | or die "$self->{path}: late open failure ($!)"; |
514 | |
509 | |
… | |
… | |
540 | or last; |
535 | or last; |
541 | $::written += $w; |
536 | $::written += $w; |
542 | $self->{written} += $w; |
537 | $self->{written} += $w; |
543 | $l += $r; |
538 | $l += $r; |
544 | } |
539 | } |
545 | } |
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546 | |
540 | |
547 | close $fh; |
541 | close $fh; |
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542 | } |
548 | } |
543 | } |
549 | |
544 | |
550 | 1; |
545 | 1; |