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 | use Coro::Signal; |
5 | |
6 | |
6 | use HTTP::Date; |
7 | use HTTP::Date; |
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8 | use POSIX (); |
7 | |
9 | |
8 | no utf8; |
10 | no utf8; |
9 | use bytes; |
11 | use bytes; |
10 | |
12 | |
11 | # at least on my machine, this thingy serves files |
13 | # at least on my machine, this thingy serves files |
… | |
… | |
28 | my $format = shift; |
30 | my $format = shift; |
29 | printf "---: $format\n", @_; |
31 | printf "---: $format\n", @_; |
30 | } |
32 | } |
31 | |
33 | |
32 | our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; |
34 | our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; |
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35 | our $httpevent = new Coro::Signal; |
33 | |
36 | |
34 | our $wait_factor = 0.95; |
37 | our $wait_factor = 0.95; |
35 | |
38 | |
36 | our @transfers = ( |
39 | our $queue_small = new transferqueue $MAX_TRANSFERS_SMALL; |
37 | [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1], |
40 | our $queue_large = new transferqueue $MAX_TRANSFERS_LARGE; |
38 | [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1], |
41 | our $queue_index = new transferqueue 5; |
39 | ); |
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40 | |
42 | |
41 | my @newcons; |
43 | my @newcons; |
42 | my @pool; |
44 | my @pool; |
43 | |
45 | |
44 | # one "execution thread" |
46 | # one "execution thread" |
… | |
… | |
147 | my $peername = shift; |
149 | my $peername = shift; |
148 | my $self = bless { fh => $fh }, $class; |
150 | my $self = bless { fh => $fh }, $class; |
149 | my (undef, $iaddr) = unpack_sockaddr_in $peername |
151 | my (undef, $iaddr) = unpack_sockaddr_in $peername |
150 | or $self->err(500, "unable to decode peername"); |
152 | or $self->err(500, "unable to decode peername"); |
151 | |
153 | |
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154 | $self->{remote_addr} = |
152 | $self->{remote_addr} = inet_ntoa $iaddr; |
155 | $self->{remote_id} = inet_ntoa $iaddr; |
153 | $self->{time} = $::NOW; |
156 | $self->{time} = $::NOW; |
154 | |
157 | |
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158 | weaken ($Coro::current->{conn} = $self); |
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159 | |
155 | $::conns++; |
160 | $::conns++; |
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161 | $::maxconns = $::conns if $::conns > $::maxconns; |
156 | |
162 | |
157 | $self; |
163 | $self; |
158 | } |
164 | } |
159 | |
165 | |
160 | sub DESTROY { |
166 | sub DESTROY { |
… | |
… | |
168 | my $self = shift; |
174 | my $self = shift; |
169 | |
175 | |
170 | # clean up hints |
176 | # clean up hints |
171 | delete $conn{$self->{remote_id}}{$self*1}; |
177 | delete $conn{$self->{remote_id}}{$self*1}; |
172 | delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1}; |
178 | delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1}; |
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179 | |
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180 | $httpevent->broadcast; |
173 | } |
181 | } |
174 | |
182 | |
175 | sub slog { |
183 | sub slog { |
176 | my $self = shift; |
184 | my $self = shift; |
177 | main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); |
185 | main::slog($_[0], "$self->{remote_id}> $_[1]"); |
178 | } |
186 | } |
179 | |
187 | |
180 | sub response { |
188 | sub response { |
181 | my ($self, $code, $msg, $hdr, $content) = @_; |
189 | my ($self, $code, $msg, $hdr, $content) = @_; |
182 | my $res = "HTTP/1.1 $code $msg\015\012"; |
190 | my $res = "HTTP/1.1 $code $msg\015\012"; |
183 | |
191 | |
184 | $self->{h}{connection} = "close" if $hdr->{Connection} =~ /close/; |
192 | if (exists $hdr->{Connection}) { |
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193 | if ($hdr->{Connection} =~ /close/) { |
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194 | $self->{h}{connection} = "close" |
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195 | } |
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196 | } else { |
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197 | if ($self->{version} < 1.1) { |
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198 | if ($self->{h}{connection} =~ /keep-alive/i) { |
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199 | $hdr->{Connection} = "Keep-Alive"; |
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200 | } else { |
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201 | $self->{h}{connection} = "close" |
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202 | } |
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203 | } |
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204 | } |
185 | |
205 | |
186 | $res .= "Date: $HTTP_NOW\015\012"; |
206 | $res .= "Date: $HTTP_NOW\015\012"; |
187 | |
207 | |
188 | while (my ($h, $v) = each %$hdr) { |
208 | while (my ($h, $v) = each %$hdr) { |
189 | $res .= "$h: $v\015\012" |
209 | $res .= "$h: $v\015\012" |
190 | } |
210 | } |
191 | $res .= "\015\012"; |
211 | $res .= "\015\012"; |
192 | |
212 | |
193 | $res .= $content if defined $content and $self->{method} ne "HEAD"; |
213 | $res .= $content if defined $content and $self->{method} ne "HEAD"; |
194 | |
214 | |
195 | my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; |
215 | my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $NOW). |
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216 | " $self->{remote_id} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}. |
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217 | " \"$self->{h}{referer}\"\n"; |
196 | |
218 | |
197 | print $accesslog $log if $accesslog; |
219 | print $accesslog $log if $accesslog; |
198 | print STDERR $log; |
220 | print STDERR $log; |
199 | |
221 | |
200 | $self->{written} += |
222 | $self->{written} += |
… | |
… | |
292 | |
314 | |
293 | delete $blocked{$id}; |
315 | delete $blocked{$id}; |
294 | } |
316 | } |
295 | |
317 | |
296 | if (%{$conn{$id}} >= $::MAX_CONN_IP) { |
318 | if (%{$conn{$id}} >= $::MAX_CONN_IP) { |
297 | my $delay = $::PER_TIMEOUT + 15; |
319 | my $delay = $::PER_TIMEOUT + $::NOW + 15; |
298 | while (%{$conn{$id}} >= $::MAX_CONN_IP) { |
320 | while (%{$conn{$id}} >= $::MAX_CONN_IP) { |
299 | if ($delay <= 0) { |
321 | if ($delay < $::NOW) { |
300 | $self->slog(2, "blocked ip $id"); |
322 | $self->slog(2, "blocked ip $id"); |
301 | $self->err_blocked; |
323 | $self->err_blocked; |
302 | } else { |
324 | } else { |
303 | Coro::Event::do_timer(after => 4); $delay -= 4; |
325 | $httpevent->wait; |
304 | } |
326 | } |
305 | } |
327 | } |
306 | } |
328 | } |
307 | |
329 | |
308 | # find out server name and port |
330 | # find out server name and port |
… | |
… | |
314 | |
336 | |
315 | if (defined $host) { |
337 | if (defined $host) { |
316 | $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80; |
338 | $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80; |
317 | } else { |
339 | } else { |
318 | ($self->{server_port}, $host) |
340 | ($self->{server_port}, $host) |
319 | = unpack_sockaddr_in $self->{fh}->getsockname |
341 | = unpack_sockaddr_in $self->{fh}->sockname |
320 | or $self->err(500, "unable to get socket name"); |
342 | or $self->err(500, "unable to get socket name"); |
321 | $host = inet_ntoa $host; |
343 | $host = inet_ntoa $host; |
322 | } |
344 | } |
323 | |
345 | |
324 | $self->{server_name} = $host; |
346 | $self->{server_name} = $host; |
… | |
… | |
334 | |
356 | |
335 | $self->eoconn; |
357 | $self->eoconn; |
336 | |
358 | |
337 | die if $@ && !ref $@; |
359 | die if $@ && !ref $@; |
338 | |
360 | |
339 | last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1; |
361 | last if $self->{h}{connection} =~ /close/; |
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362 | |
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363 | $httpevent->broadcast; |
340 | |
364 | |
341 | $fh->timeout($::PER_TIMEOUT); |
365 | $fh->timeout($::PER_TIMEOUT); |
342 | } |
366 | } |
343 | } |
367 | } |
344 | |
368 | |
… | |
… | |
394 | |
418 | |
395 | sub respond { |
419 | sub respond { |
396 | my $self = shift; |
420 | my $self = shift; |
397 | my $path = $self->{path}; |
421 | my $path = $self->{path}; |
398 | |
422 | |
399 | stat $path |
423 | if ($self->{name} =~ s%^/internal/([^/]+)%%) { |
400 | or $self->err(404, "not found"); |
424 | if ($::internal{$1}) { |
401 | |
425 | $::internal{$1}->($self); |
402 | $self->{stat} = [stat _]; |
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403 | |
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404 | # idiotic netscape sends idiotic headers AGAIN |
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405 | my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/ |
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406 | ? str2time $1 : 0; |
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407 | |
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408 | if (-d _ && -r _) { |
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409 | # directory |
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410 | if ($path !~ /\/$/) { |
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411 | # create a redirect to get the trailing "/" |
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412 | # we don't try to avoid the :80 |
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413 | $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" }); |
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414 | } else { |
426 | } else { |
415 | $ims < $self->{stat}[9] |
427 | $self->err(404, "not found"); |
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428 | } |
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429 | } else { |
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430 | |
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431 | stat $path |
416 | or $self->err(304, "not modified"); |
432 | or $self->err(404, "not found"); |
417 | |
433 | |
418 | if (-r "$path/index.html") { |
434 | $self->{stat} = [stat _]; |
419 | $self->{path} .= "/index.html"; |
435 | |
420 | $self->handle_file; |
436 | # idiotic netscape sends idiotic headers AGAIN |
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437 | my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/ |
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438 | ? str2time $1 : 0; |
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439 | |
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440 | if (-d _ && -r _) { |
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441 | # directory |
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442 | if ($path !~ /\/$/) { |
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443 | # create a redirect to get the trailing "/" |
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444 | # we don't try to avoid the :80 |
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445 | $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" }); |
421 | } else { |
446 | } else { |
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447 | $ims < $self->{stat}[9] |
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448 | or $self->err(304, "not modified"); |
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449 | |
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450 | if (-r "$path/index.html") { |
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451 | # replace directory "size" by index.html filesize |
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452 | $self->{stat} = [stat ($self->{path} .= "/index.html")]; |
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453 | $self->handle_file($queue_index); |
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454 | } else { |
422 | $self->handle_dir; |
455 | $self->handle_dir; |
423 | } |
456 | } |
424 | } |
457 | } |
425 | } elsif (-f _ && -r _) { |
458 | } elsif (-f _ && -r _) { |
426 | -x _ and $self->err(403, "forbidden"); |
459 | -x _ and $self->err(403, "forbidden"); |
427 | $self->handle_file; |
460 | $self->handle_file(-s _ >= $::TRANSFER_SMALL ? $queue_large : $queue_small); |
428 | } else { |
461 | } else { |
429 | $self->err(404, "not found"); |
462 | $self->err(404, "not found"); |
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463 | } |
430 | } |
464 | } |
431 | } |
465 | } |
432 | |
466 | |
433 | sub handle_dir { |
467 | sub handle_dir { |
434 | my $self = shift; |
468 | my $self = shift; |
… | |
… | |
436 | |
470 | |
437 | $self->response(200, "ok", |
471 | $self->response(200, "ok", |
438 | { |
472 | { |
439 | "Content-Type" => "text/html", |
473 | "Content-Type" => "text/html", |
440 | "Content-Length" => length $idx, |
474 | "Content-Length" => length $idx, |
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475 | "Last-Modified" => time2str ($self->{stat}[9]), |
441 | }, |
476 | }, |
442 | $idx); |
477 | $idx); |
443 | } |
478 | } |
444 | |
479 | |
445 | sub handle_file { |
480 | sub handle_file { |
446 | my $self = shift; |
481 | my ($self, $queue) = @_; |
447 | my $length = $self->{stat}[7]; |
482 | my $length = $self->{stat}[7]; |
448 | my $queue = $::transfers[$length >= $::TRANSFER_SMALL]; |
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449 | my $hdr = { |
483 | my $hdr = { |
450 | "Last-Modified" => time2str ((stat _)[9]), |
484 | "Last-Modified" => time2str ((stat _)[9]), |
451 | }; |
485 | }; |
452 | |
486 | |
453 | my @code = (200, "ok"); |
487 | my @code = (200, "ok"); |
… | |
… | |
470 | $self->err(416, "not satisfiable", $hdr, ""); |
504 | $self->err(416, "not satisfiable", $hdr, ""); |
471 | |
505 | |
472 | satisfiable: |
506 | satisfiable: |
473 | # check for segmented downloads |
507 | # check for segmented downloads |
474 | if ($l && $::NO_SEGMENTED) { |
508 | if ($l && $::NO_SEGMENTED) { |
475 | my $delay = $::PER_TIMEOUT + 15; |
509 | my $delay = $::NOW + $::PER_TIMEOUT + 15; |
476 | while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { |
510 | while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { |
477 | if ($delay <= 0) { |
511 | if ($delay <= $::NOW) { |
478 | $self->err_segmented_download; |
512 | $self->err_segmented_download; |
479 | } else { |
513 | } else { |
480 | Coro::Event::do_timer(after => 4); $delay -= 4; |
514 | $httpevent->wait; |
481 | } |
515 | } |
482 | } |
516 | } |
483 | } |
517 | } |
484 | |
518 | |
485 | $hdr->{"Content-Range"} = "bytes $l-$h/$length"; |
519 | $hdr->{"Content-Range"} = "bytes $l-$h/$length"; |
… | |
… | |
498 | $self->response(@code, $hdr, ""); |
532 | $self->response(@code, $hdr, ""); |
499 | |
533 | |
500 | if ($self->{method} eq "GET") { |
534 | if ($self->{method} eq "GET") { |
501 | $self->{time} = $::NOW; |
535 | $self->{time} = $::NOW; |
502 | |
536 | |
503 | my $fudge = $queue->[0]->waiters; |
537 | my $current = $Coro::current; |
504 | $fudge = $fudge ? ($fudge+1)/$fudge : 1; |
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505 | |
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506 | $queue->[1] *= $fudge; |
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507 | my $transfer = $queue->[0]->guard; |
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508 | |
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509 | if ($fudge != 1) { |
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510 | $queue->[1] /= $fudge; |
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511 | $queue->[1] = $queue->[1] * $::wait_factor |
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512 | + ($::NOW - $self->{time}) * (1 - $::wait_factor); |
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513 | } |
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514 | $self->{time} = $::NOW; |
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515 | |
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516 | $self->{fh}->writable or return; |
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517 | |
538 | |
518 | my ($fh, $buf, $r); |
539 | my ($fh, $buf, $r); |
519 | my $current = $Coro::current; |
540 | |
520 | open $fh, "<", $self->{path} |
541 | open $fh, "<", $self->{path} |
521 | or die "$self->{path}: late open failure ($!)"; |
542 | or die "$self->{path}: late open failure ($!)"; |
522 | |
543 | |
523 | $h -= $l - 1; |
544 | $h -= $l - 1; |
524 | |
545 | |
525 | if (0) { |
546 | if (0) { # !AIO |
526 | if ($l) { |
547 | if ($l) { |
527 | sysseek $fh, $l, 0; |
548 | sysseek $fh, $l, 0; |
528 | } |
549 | } |
529 | } |
550 | } |
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551 | |
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552 | my $transfer = $queue->start_transfer; |
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553 | my $locked; |
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554 | my $bufsize = $::WAIT_BUFSIZE; # initial buffer size |
530 | |
555 | |
531 | while ($h > 0) { |
556 | while ($h > 0) { |
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557 | unless ($locked) { |
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558 | if ($locked ||= $transfer->try($::WAIT_INTERVAL)) { |
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559 | $bufsize = $::BUFSIZE; |
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560 | $self->{time} = $::NOW; |
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561 | } |
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562 | } |
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563 | |
532 | if (0) { |
564 | if (0) { # !AIO |
533 | sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h |
565 | sysread $fh, $buf, $h > $bufsize ? $bufsize : $h |
534 | or last; |
566 | or last; |
535 | } else { |
567 | } else { |
536 | aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), |
568 | aio_read($fh, $l, ($h > $bufsize ? $bufsize : $h), |
537 | $buf, 0, sub { |
569 | $buf, 0, sub { |
538 | $r = $_[0]; |
570 | $r = $_[0]; |
539 | Coro::ready($current); |
571 | Coro::ready($current); |
540 | }); |
572 | }); |
541 | &Coro::schedule; |
573 | &Coro::schedule; |