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/cvs/cvsroot/Coro/myhttpd/httpd.pl
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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.43 by root, Wed Sep 12 20:29:43 2001 UTC vs.
Revision 1.65 by root, Fri Jan 25 09:26:13 2002 UTC

1use Coro; 1use Coro;
2use Coro::Semaphore; 2use Coro::Semaphore;
3use Coro::Event; 3use Coro::Event;
4use Coro::Socket; 4use Coro::Socket;
5use Coro::Signal;
5 6
6use HTTP::Date; 7use HTTP::Date;
8use POSIX ();
9
10use Compress::Zlib ();
7 11
8no utf8; 12no utf8;
9use bytes; 13use bytes;
10 14
11# at least on my machine, this thingy serves files 15# at least on my machine, this thingy serves files
… …
13# and quite a bit slower than thttpd :( 17# and quite a bit slower than thttpd :(
14 18
15$SIG{PIPE} = 'IGNORE'; 19$SIG{PIPE} = 'IGNORE';
16 20
17our $accesslog; 21our $accesslog;
22our $errorlog;
23
24our $NOW;
25our $HTTP_NOW;
26
27Event->timer(interval => 1, hard => 1, cb => sub {
28 $NOW = time;
29 $HTTP_NOW = time2str $NOW;
30})->now;
31
32if ($ERROR_LOG) {
33 use IO::Handle;
34 open $errorlog, ">>$ERROR_LOG"
35 or die "$ERROR_LOG: $!";
36 $errorlog->autoflush(1);
37}
18 38
19if ($ACCESS_LOG) { 39if ($ACCESS_LOG) {
20 use IO::Handle; 40 use IO::Handle;
21 open $accesslog, ">>$ACCESS_LOG" 41 open $accesslog, ">>$ACCESS_LOG"
22 or die "$ACCESS_LOG: $!"; 42 or die "$ACCESS_LOG: $!";
… …
24} 44}
25 45
26sub slog { 46sub slog {
27 my $level = shift; 47 my $level = shift;
28 my $format = shift; 48 my $format = shift;
49 my $NOW = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW);
29 printf "---: $format\n", @_; 50 printf "$NOW: $format\n", @_;
51 printf $errorlog "$NOW: $format\n", @_ if $errorlog;
30} 52}
31 53
32our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; 54our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
55our $httpevent = new Coro::Signal;
33 56
34our $wait_factor = 0.95; 57our $queue_file = new transferqueue $MAX_TRANSFERS;
35 58our $queue_index = new transferqueue 10;
36our @transfers = (
37 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1],
38 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1],
39);
40 59
41my @newcons; 60my @newcons;
42my @pool; 61my @pool;
43 62
44# one "execution thread" 63# one "execution thread"
… …
47 if (@newcons) { 66 if (@newcons) {
48 eval { 67 eval {
49 conn->new(@{pop @newcons})->handle; 68 conn->new(@{pop @newcons})->handle;
50 }; 69 };
51 slog 1, "$@" if $@ && !ref $@; 70 slog 1, "$@" if $@ && !ref $@;
71
72 $httpevent->broadcast; # only for testing, but doesn't matter much
73
52 $connections->up; 74 $connections->up;
53 } else { 75 } else {
54 last if @pool >= $MAX_POOL; 76 last if @pool >= $MAX_POOL;
55 push @pool, $Coro::current; 77 push @pool, $Coro::current;
56 schedule; 78 schedule;
… …
98 or die "unable to start server"; 120 or die "unable to start server";
99 121
100 listen_on $http_port; 122 listen_on $http_port;
101} 123}
102 124
103our $NOW;
104our $HTTP_NOW;
105
106Event->timer(interval => 1, hard => 1, cb => sub {
107 $NOW = time;
108 $HTTP_NOW = time2str $NOW;
109})->now;
110
111package conn; 125package conn;
112 126
113use Socket; 127use Socket;
114use HTTP::Date; 128use HTTP::Date;
115use Convert::Scalar 'weaken'; 129use Convert::Scalar 'weaken';
… …
147 my $peername = shift; 161 my $peername = shift;
148 my $self = bless { fh => $fh }, $class; 162 my $self = bless { fh => $fh }, $class;
149 my (undef, $iaddr) = unpack_sockaddr_in $peername 163 my (undef, $iaddr) = unpack_sockaddr_in $peername
150 or $self->err(500, "unable to decode peername"); 164 or $self->err(500, "unable to decode peername");
151 165
166 $self->{remote_addr} =
152 $self->{remote_addr} = inet_ntoa $iaddr; 167 $self->{remote_id} = inet_ntoa $iaddr;
168
153 $self->{time} = $::NOW; 169 $self->{time} = $::NOW;
154 170
171 weaken ($Coro::current->{conn} = $self);
172
155 $::conns++; 173 $::conns++;
174 $::maxconns = $::conns if $::conns > $::maxconns;
156 175
157 $self; 176 $self;
158} 177}
159 178
160sub DESTROY { 179sub DESTROY {
161 my $self = shift; 180 #my $self = shift;
162 $::conns--; 181 $::conns--;
163 $self->eoconn;
164}
165
166# end of connection
167sub eoconn {
168 my $self = shift;
169
170 # clean up hints
171 delete $conn{$self->{remote_id}}{$self*1};
172 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
173} 182}
174 183
175sub slog { 184sub slog {
176 my $self = shift; 185 my $self = shift;
177 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 186 main::slog($_[0], "$self->{remote_id}> $_[1]");
178} 187}
179 188
180sub response { 189sub response {
181 my ($self, $code, $msg, $hdr, $content) = @_; 190 my ($self, $code, $msg, $hdr, $content) = @_;
182 my $res = "HTTP/1.1 $code $msg\015\012"; 191 my $res = "HTTP/1.1 $code $msg\015\012";
192 my $GZ = "";
183 193
184 $self->{h}{connection} = "close" if $hdr->{Connection} =~ /close/; 194 if (exists $hdr->{Connection}) {
195 if ($hdr->{Connection} =~ /close/) {
196 $self->{h}{connection} = "close"
197 }
198 } else {
199 if ($self->{version} < 1.1) {
200 if ($self->{h}{connection} =~ /keep-alive/i) {
201 $hdr->{Connection} = "Keep-Alive";
202 } else {
203 $self->{h}{connection} = "close"
204 }
205 }
206 }
207
208 if ($self->{method} ne "HEAD"
209 && $self->{h}{"accept-encoding"} =~ /\bgzip\b/
210 && 400 < length $content
211 && $hdr->{"Content-Length"} == length $content
212 && !exists $hdr->{"Content-Encoding"}
213 ) {
214 my $orig = length $content;
215 $hdr->{"Content-Encoding"} = "gzip";
216 $content = Compress::Zlib::memGzip(\$content);
217 $hdr->{"Content-Length"} = length $content;
218 $GZ = sprintf "GZ%02d", 100 - 100*((length $content) / $orig);
219 }
185 220
186 $res .= "Date: $HTTP_NOW\015\012"; 221 $res .= "Date: $HTTP_NOW\015\012";
187 222
188 while (my ($h, $v) = each %$hdr) { 223 while (my ($h, $v) = each %$hdr) {
189 $res .= "$h: $v\015\012" 224 $res .= "$h: $v\015\012"
190 } 225 }
191 $res .= "\015\012"; 226 $res .= "\015\012";
192 227
193 $res .= $content if defined $content and $self->{method} ne "HEAD"; 228 $res .= $content if defined $content and $self->{method} ne "HEAD";
194 229
195 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 230 my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW).
231 " $self->{remote_id} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}.$GZ.
232 " \"$self->{h}{referer}\"\n";
196 233
197 print $accesslog $log if $accesslog; 234 print $::accesslog $log if $::accesslog;
198 print STDERR $log; 235 print STDERR $log;
199 236
200 $self->{written} += 237 $self->{written} +=
201 print {$self->{fh}} $res; 238 print {$self->{fh}} $res;
202} 239}
… …
261 my (%hdr, $h, $v); 298 my (%hdr, $h, $v);
262 299
263 $hdr{lc $1} .= ",$2" 300 $hdr{lc $1} .= ",$2"
264 while $req =~ /\G 301 while $req =~ /\G
265 ([^:\000-\040]+): 302 ([^:\000-\040]+):
266 [\008\040]* 303 [\010\040]*
267 ((?: [^\015\012]+ | \015\012[\008\040] )*) 304 ((?: [^\015\012]+ | \015\012[\010\040] )*)
268 \015\012 305 \015\012
269 /gxc; 306 /gxc;
270 307
271 $req =~ /\G\015\012$/ 308 $req =~ /\G\015\012$/
272 or $self->err(400, "bad request"); 309 or $self->err(400, "bad request");
… …
284 $id .= "[".$self->{h}{"x-forwarded-for"}."]"; 321 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
285 } 322 }
286 323
287 $self->{remote_id} = $id; 324 $self->{remote_id} = $id;
288 325
326 weaken (local $conn{$id}{$self*1} = $self);
327
289 if ($blocked{$id}) { 328 if ($blocked{$id}) {
290 $self->err_blocked($blocked{$id}) 329 $self->err_blocked
291 if $blocked{$id} > $::NOW; 330 if $blocked{$id}[0] > $::NOW;
292 331
293 delete $blocked{$id}; 332 delete $blocked{$id};
294 }
295
296 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
297 my $delay = $::PER_TIMEOUT + 15;
298 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
299 if ($delay <= 0) {
300 $self->slog(2, "blocked ip $id");
301 $self->err_blocked;
302 } else {
303 Coro::Event::do_timer(after => 4); $delay -= 4;
304 }
305 }
306 } 333 }
307 334
308 # find out server name and port 335 # find out server name and port
309 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 336 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
310 $host = $1; 337 $host = $1;
… …
321 $host = inet_ntoa $host; 348 $host = inet_ntoa $host;
322 } 349 }
323 350
324 $self->{server_name} = $host; 351 $self->{server_name} = $host;
325 352
326 # enter ourselves into various lists
327 weaken ($conn{$id}{$self*1} = $self);
328 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self); 353 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
329 354
330 eval { 355 eval {
331 $self->map_uri; 356 $self->map_uri;
332 $self->respond; 357 $self->respond;
333 }; 358 };
334 359
335 $self->eoconn;
336
337 die if $@ && !ref $@; 360 die if $@ && !ref $@;
338 361
339 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1; 362 last if $self->{h}{connection} =~ /close/i;
363
364 $httpevent->broadcast;
340 365
341 $fh->timeout($::PER_TIMEOUT); 366 $fh->timeout($::PER_TIMEOUT);
342 } 367 }
368}
369
370sub block {
371 my $self = shift;
372
373 $blocked{$self->{remote_id}} = [$::NOW + $_[0], $_[1]];
374 $self->slog(2, "blocked ip $self->{remote_id}");
375 $self->err_blocked;
343} 376}
344 377
345# uri => path mapping 378# uri => path mapping
346sub map_uri { 379sub map_uri {
347 my $self = shift; 380 my $self = shift;
… …
394 427
395sub respond { 428sub respond {
396 my $self = shift; 429 my $self = shift;
397 my $path = $self->{path}; 430 my $path = $self->{path};
398 431
399 stat $path 432 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
400 or $self->err(404, "not found"); 433 if ($::internal{$1}) {
401 434 $::internal{$1}->($self);
402 $self->{stat} = [stat _];
403
404 # idiotic netscape sends idiotic headers AGAIN
405 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
406 ? str2time $1 : 0;
407
408 if (-d _ && -r _) {
409 # directory
410 if ($path !~ /\/$/) {
411 # create a redirect to get the trailing "/"
412 # we don't try to avoid the :80
413 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
414 } else { 435 } else {
415 $ims < $self->{stat}[9] 436 $self->err(404, "not found");
437 }
438 } else {
439
440 stat $path
416 or $self->err(304, "not modified"); 441 or $self->err(404, "not found");
417 442
418 if (-r "$path/index.html") { 443 $self->{stat} = [stat _];
419 $self->{path} .= "/index.html"; 444
420 $self->handle_file; 445 # idiotic netscape sends idiotic headers AGAIN
446 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
447 ? str2time $1 : 0;
448
449 if (-d _ && -r _) {
450 # directory
451 if ($path !~ /\/$/) {
452 # create a redirect to get the trailing "/"
453 # we don't try to avoid the :80
454 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
421 } else { 455 } else {
456 $ims < $self->{stat}[9]
457 or $self->err(304, "not modified");
458
459 if (-r "$path/index.html") {
460 # replace directory "size" by index.html filesize
461 $self->{stat} = [stat ($self->{path} .= "/index.html")];
462 $self->handle_file($queue_index);
463 } else {
422 $self->handle_dir; 464 $self->handle_dir;
423 } 465 }
424 } 466 }
425 } elsif (-f _ && -r _) { 467 } elsif (-f _ && -r _) {
426 -x _ and $self->err(403, "forbidden"); 468 -x _ and $self->err(403, "forbidden");
469
470 if (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
471 my $timeout = $::NOW + 10;
472 while (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
473 if ($timeout < $::NOW) {
474 $self->block($::BLOCKTIME, "too many connections");
475 } else {
476 $httpevent->wait;
477 }
478 }
479 }
480
427 $self->handle_file; 481 $self->handle_file($queue_file);
428 } else { 482 } else {
429 $self->err(404, "not found"); 483 $self->err(404, "not found");
484 }
430 } 485 }
431} 486}
432 487
433sub handle_dir { 488sub handle_dir {
434 my $self = shift; 489 my $self = shift;
… …
436 491
437 $self->response(200, "ok", 492 $self->response(200, "ok",
438 { 493 {
439 "Content-Type" => "text/html", 494 "Content-Type" => "text/html",
440 "Content-Length" => length $idx, 495 "Content-Length" => length $idx,
496 "Last-Modified" => time2str ($self->{stat}[9]),
441 }, 497 },
442 $idx); 498 $idx);
443} 499}
444 500
445sub handle_file { 501sub handle_file {
446 my $self = shift; 502 my ($self, $queue) = @_;
447 my $length = $self->{stat}[7]; 503 my $length = $self->{stat}[7];
448 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
449 my $hdr = { 504 my $hdr = {
450 "Last-Modified" => time2str ((stat _)[9]), 505 "Last-Modified" => time2str ((stat _)[9]),
451 }; 506 };
452 507
453 my @code = (200, "ok"); 508 my @code = (200, "ok");
… …
470 $self->err(416, "not satisfiable", $hdr, ""); 525 $self->err(416, "not satisfiable", $hdr, "");
471 526
472satisfiable: 527satisfiable:
473 # check for segmented downloads 528 # check for segmented downloads
474 if ($l && $::NO_SEGMENTED) { 529 if ($l && $::NO_SEGMENTED) {
475 my $delay = $::PER_TIMEOUT + 15; 530 my $timeout = $::NOW + 15;
476 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { 531 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
477 if ($delay <= 0) { 532 if ($timeout <= $::NOW) {
533 $self->block($::BLOCKTIME, "segmented downloads are forbidden");
478 $self->err_segmented_download; 534 #$self->err_segmented_download;
479 } else { 535 } else {
480 Coro::Event::do_timer(after => 4); $delay -= 4; 536 $httpevent->wait;
481 } 537 }
482 } 538 }
483 } 539 }
484 540
485 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 541 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
… …
498 $self->response(@code, $hdr, ""); 554 $self->response(@code, $hdr, "");
499 555
500 if ($self->{method} eq "GET") { 556 if ($self->{method} eq "GET") {
501 $self->{time} = $::NOW; 557 $self->{time} = $::NOW;
502 558
503 my $fudge = $queue->[0]->waiters; 559 my $current = $Coro::current;
504 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
505
506 $queue->[1] *= $fudge;
507 my $transfer = $queue->[0]->guard;
508
509 if ($fudge != 1) {
510 $queue->[1] /= $fudge;
511 $queue->[1] = $queue->[1] * $::wait_factor
512 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
513 }
514 $self->{time} = $::NOW;
515
516 $self->{fh}->writable or return;
517 560
518 my ($fh, $buf, $r); 561 my ($fh, $buf, $r);
519 my $current = $Coro::current; 562
520 open $fh, "<", $self->{path} 563 open $fh, "<", $self->{path}
521 or die "$self->{path}: late open failure ($!)"; 564 or die "$self->{path}: late open failure ($!)";
522 565
523 $h -= $l - 1; 566 $h -= $l - 1;
524 567
525 if (0) { 568 if (0) { # !AIO
526 if ($l) { 569 if ($l) {
527 sysseek $fh, $l, 0; 570 sysseek $fh, $l, 0;
528 } 571 }
529 } 572 }
573
574 my $transfer = $queue->start_transfer($h);
575 my $locked;
576 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
530 577
531 while ($h > 0) { 578 while ($h > 0) {
579 unless ($locked) {
580 if ($locked ||= $transfer->try($::WAIT_INTERVAL)) {
581 $bufsize = $::BUFSIZE;
582 $self->{time} = $::NOW;
583 }
584 }
585
586 if ($blocked{$self->{remote_id}}) {
587 $self->{h}{connection} = "close";
588 die bless {}, err::;
589 }
590
532 if (0) { 591 if (0) { # !AIO
533 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 592 sysread $fh, $buf, $h > $bufsize ? $bufsize : $h
534 or last; 593 or last;
535 } else { 594 } else {
536 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 595 aio_read($fh, $l, ($h > $bufsize ? $bufsize : $h),
537 $buf, 0, sub { 596 $buf, 0, sub {
538 $r = $_[0]; 597 $r = $_[0];
539 Coro::ready($current); 598 Coro::ready($current);
540 }); 599 });
541 &Coro::schedule; 600 &Coro::schedule;

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