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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.20 by root, Thu Aug 16 21:55:35 2001 UTC vs.
Revision 1.35 by root, Thu Aug 30 12:35:28 2001 UTC

1use Coro; 1use Coro;
2use Coro::Semaphore; 2use Coro::Semaphore;
3use Coro::Event; 3use Coro::Event;
4use Coro::Socket; 4use Coro::Socket;
5 5
6use HTTP::Date;
7
6no utf8; 8no utf8;
7use bytes; 9use bytes;
8 10
9# at least on my machine, this thingy serves files 11# at least on my machine, this thingy serves files
10# quite a bit faster than apache, ;) 12# quite a bit faster than apache, ;)
11# and quite a bit slower than thttpd :( 13# and quite a bit slower than thttpd :(
12 14
13$SIG{PIPE} = 'IGNORE'; 15$SIG{PIPE} = 'IGNORE';
14 16
17our $accesslog;
18
19if ($ACCESS_LOG) {
20 use IO::Handle;
21 open $accesslog, ">>$ACCESS_LOG"
22 or die "$ACCESS_LOG: $!";
23 $accesslog->autoflush(1);
24}
25
15sub slog { 26sub slog {
16 my $level = shift; 27 my $level = shift;
17 my $format = shift; 28 my $format = shift;
18 printf "---: $format\n", @_; 29 printf "---: $format\n", @_;
19} 30}
20 31
21my $connections = new Coro::Semaphore $MAX_CONNECTS; 32our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
33
34our $wait_factor = 0.95;
35
36our @transfers = (
37 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1],
38 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1],
39);
22 40
23my @newcons; 41my @newcons;
24my @pool; 42my @pool;
25 43
26# one "execution thread" 44# one "execution thread"
… …
48 Listen => 50, 66 Listen => 50,
49 or die "unable to start server"; 67 or die "unable to start server";
50 68
51push @listen_sockets, $http_port; 69push @listen_sockets, $http_port;
52 70
71our $NOW;
72our $HTTP_NOW;
73
74Event->timer(interval => 1, hard => 1, cb => sub {
75 $NOW = time;
76 $HTTP_NOW = time2str $NOW;
77})->now;
78
53# the "main thread" 79# the "main thread"
54async { 80async {
55 slog 1, "accepting connections"; 81 slog 1, "accepting connections";
56 while () { 82 while () {
57 $connections->down; 83 $connections->down;
58 push @newcons, [$http_port->accept]; 84 push @newcons, [$http_port->accept];
59 #slog 3, "accepted @$connections ".scalar(@pool); 85 #slog 3, "accepted @$connections ".scalar(@pool);
60 $::NOW = time;
61 if (@pool) { 86 if (@pool) {
62 (pop @pool)->ready; 87 (pop @pool)->ready;
63 } else { 88 } else {
64 async \&handler; 89 async \&handler;
65 } 90 }
… …
74use Convert::Scalar 'weaken'; 99use Convert::Scalar 'weaken';
75use Linux::AIO; 100use Linux::AIO;
76 101
77Linux::AIO::min_parallel $::AIO_PARALLEL; 102Linux::AIO::min_parallel $::AIO_PARALLEL;
78 103
104my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
105
79Event->io(fd => Linux::AIO::poll_fileno, 106Event->io(fd => Linux::AIO::poll_fileno,
80 poll => 'r', async => 1, 107 poll => 'r', async => 1,
81 cb => \&Linux::AIO::poll_cb ); 108 cb => \&Linux::AIO::poll_cb);
82 109
83our %conn; # $conn{ip}{fh} => connobj 110our %conn; # $conn{ip}{self} => connobj
111our %uri; # $uri{ip}{uri}{self}
84our %blocked; 112our %blocked;
85our %mimetype; 113our %mimetype;
86 114
87sub read_mimetypes { 115sub read_mimetypes {
88 local *M; 116 local *M;
… …
127 delete $conn{$self->{remote_addr}}{$self*1}; 155 delete $conn{$self->{remote_addr}}{$self*1};
128} 156}
129 157
130# end of connection 158# end of connection
131sub eoconn { 159sub eoconn {
160 my $self = shift;
132 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 161 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1};
133} 162}
134 163
135sub slog { 164sub slog {
136 my $self = shift; 165 my $self = shift;
137 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 166 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
138} 167}
139 168
140sub response { 169sub response {
141 my ($self, $code, $msg, $hdr, $content) = @_; 170 my ($self, $code, $msg, $hdr, $content) = @_;
142 my $res = "HTTP/1.1 $code $msg\015\012"; 171 my $res = "HTTP/1.1 $code $msg\015\012";
143 172
144 #$res .= "Connection: close\015\012"; 173 $self->{h}{connection} ||= $hdr->{Connection};
145 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 174
175 $res .= "Date: $HTTP_NOW\015\012";
146 176
147 while (my ($h, $v) = each %$hdr) { 177 while (my ($h, $v) = each %$hdr) {
148 $res .= "$h: $v\015\012" 178 $res .= "$h: $v\015\012"
149 } 179 }
150 $res .= "\015\012"; 180 $res .= "\015\012";
151 181
152 $res .= $content if defined $content and $self->{method} ne "HEAD"; 182 $res .= $content if defined $content and $self->{method} ne "HEAD";
153 183
154 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# 184 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
185
186 print $accesslog $log if $accesslog;
187 print STDERR $log;
155 188
156 $self->{written} += 189 $self->{written} +=
157 print {$self->{fh}} $res; 190 print {$self->{fh}} $res;
158} 191}
159 192
160sub err { 193sub err {
161 my $self = shift; 194 my $self = shift;
162 my ($code, $msg, $hdr, $content) = @_; 195 my ($code, $msg, $hdr, $content) = @_;
163 196
164 unless (defined $content) { 197 unless (defined $content) {
165 $content = "$code $msg"; 198 $content = "$code $msg\n";
166 $hdr->{"Content-Type"} = "text/plain"; 199 $hdr->{"Content-Type"} = "text/plain";
167 $hdr->{"Content-Length"} = length $content; 200 $hdr->{"Content-Length"} = length $content;
168 } 201 }
169 $hdr->{"Connection"} = "close"; 202 $hdr->{"Connection"} = "close";
170 203
171 $self->response($code, $msg, $hdr, $content); 204 $self->response($code, $msg, $hdr, $content);
172 205
173 die bless {}, err::; 206 die bless {}, err::;
174} 207}
175 208
176sub err_blocked {
177 my $self = shift;
178 my $ip = $self->{remote_addr};
179 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
180
181 Coro::Event::do_timer(after => 20*rand);
182
183 $self->err(401, "too many connections",
184 {
185 "Content-Type" => "text/html",
186 "Retry-After" => $::BLOCKTIME,
187 "Warning" => "Please do NOT retry, you have been blocked",
188 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
189 },
190 <<EOF);
191<html><p>
192You have been blocked because you opened too many connections. You
193may retry at</p>
194
195 <p><blockquote>$time.</blockquote></p>
196
197<p>Until then, each new access will renew the block. You might want to have a
198look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
199</html>
200EOF
201}
202
203sub handle { 209sub handle {
204 my $self = shift; 210 my $self = shift;
205 my $fh = $self->{fh}; 211 my $fh = $self->{fh};
212
213 my $host;
206 214
207 $fh->timeout($::REQ_TIMEOUT); 215 $fh->timeout($::REQ_TIMEOUT);
208 while() { 216 while() {
209 $self->{reqs}++; 217 $self->{reqs}++;
210 218
… …
230 238
231 delete $blocked{$ip}; 239 delete $blocked{$ip};
232 } 240 }
233 241
234 if (%{$conn{$ip}} > $::MAX_CONN_IP) { 242 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
243 my $delay = 120;
244 while (%{$conn{$ip}} > $::MAX_CONN_IP) {
245 if ($delay <= 0) {
235 $self->slog(2, "blocked ip $ip"); 246 $self->slog(2, "blocked ip $ip");
236 $self->err_blocked; 247 $self->err_blocked;
248 } else {
249 Coro::Event::do_timer(after => 3);
250 $delay -= 3;
251 }
252 }
237 } 253 }
238 254
239 $req =~ /^(?:\015\012)? 255 $req =~ /^(?:\015\012)?
240 (GET|HEAD) \040+ 256 (GET|HEAD) \040+
241 ([^\040]+) \040+ 257 ([^\040]+) \040+
… …
267 283
268 $self->{h}{$h} = substr $v, 1 284 $self->{h}{$h} = substr $v, 1
269 while ($h, $v) = each %hdr; 285 while ($h, $v) = each %hdr;
270 } 286 }
271 287
288 # find out server name and port
289 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
290 $host = $1;
291 } else {
292 $host = $self->{h}{host};
293 }
294
295 if (defined $host) {
272 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 296 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
297 } else {
298 ($self->{server_port}, $host)
299 = unpack_sockaddr_in $self->{fh}->getsockname
300 or $self->err(500, "unable to get socket name");
301 $host = inet_ntoa $host;
302 }
303
304 $self->{server_name} = $host;
305
306 # remote id should be unique per user
307 $self->{remote_id} = $self->{remote_addr};
308
309 if (exists $self->{h}{"client-ip"}) {
310 $self->{remote_id} .= "[".$self->{h}{"client-ip"}."]";
311 } elsif (exists $self->{h}{"x-forwarded-for"}) {
312 $self->{remote_id} .= "[".$self->{h}{"x-forwarded-for"}."]";
313 }
273 314
274 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 315 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self);
275 316
317 eval {
276 $self->map_uri; 318 $self->map_uri;
277 $self->respond; 319 $self->respond;
320 };
278 321
279 $self->eoconn; 322 $self->eoconn;
280 323
324 die if $@ && !ref $@;
325
281 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 326 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
282 327
283 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
284 $fh->timeout($::PER_TIMEOUT); 328 $fh->timeout($::PER_TIMEOUT);
285 } 329 }
286} 330}
287 331
288# uri => path mapping 332# uri => path mapping
289sub map_uri { 333sub map_uri {
290 my $self = shift; 334 my $self = shift;
291 my $host = $self->{h}{host} || "default"; 335 my $host = $self->{server_name};
292 my $uri = $self->{uri}; 336 my $uri = $self->{uri};
293 337
294 # some massaging, also makes it more secure 338 # some massaging, also makes it more secure
295 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 339 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
296 $uri =~ s%//+%/%g; 340 $uri =~ s%//+%/%g;
… …
306 $self->{path} = "$::DOCROOT/$host$uri"; 350 $self->{path} = "$::DOCROOT/$host$uri";
307 351
308 $self->access_check; 352 $self->access_check;
309} 353}
310 354
311sub server_address {
312 my $self = shift;
313 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
314 or $self->err(500, "unable to get socket name");
315 ((inet_ntoa $iaddr), $port);
316}
317
318sub server_host {
319 my $self = shift;
320 if (exists $self->{h}{host}) {
321 return $self->{h}{host};
322 } else {
323 return (($self->server_address)[0]);
324 }
325}
326
327sub server_hostport {
328 my $self = shift;
329 my ($host, $port);
330 if (exists $self->{h}{host}) {
331 ($host, $port) = ($self->{h}{host}, $self->{server_port});
332 } else {
333 ($host, $port) = $self->server_address;
334 }
335 $port = $port == 80 ? "" : ":$port";
336 $host.$port;
337}
338
339sub _cgi { 355sub _cgi {
340 my $self = shift; 356 my $self = shift;
341 my $path = shift; 357 my $path = shift;
342 my $fh; 358 my $fh;
343 359
344 # no two-way xxx supported 360 # no two-way xxx supported
345 if (0 == fork) { 361 if (0 == fork) {
346 open STDOUT, ">&".fileno($self->{fh}); 362 open STDOUT, ">&".fileno($self->{fh});
347 if (chdir $::DOCROOT) { 363 if (chdir $::DOCROOT) {
348 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 364 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
349 $ENV{HTTP_HOST} = $self->server_host; 365 $ENV{HTTP_HOST} = $self->{server_name};
350 $ENV{HTTP_PORT} = $self->{server_host}; 366 $ENV{HTTP_PORT} = $self->{server_port};
351 $ENV{SCRIPT_NAME} = $self->{name}; 367 $ENV{SCRIPT_NAME} = $self->{name};
352 exec $path; 368 exec $path;
353 } 369 }
354 Coro::State::_exit(0); 370 Coro::State::_exit(0);
355 } else { 371 } else {
372 die;
356 } 373 }
374}
375
376sub server_hostport {
377 $_[0]{server_port} == 80
378 ? $_[0]{server_name}
379 : "$_[0]{server_name}:$_[0]{server_port}";
357} 380}
358 381
359sub respond { 382sub respond {
360 my $self = shift; 383 my $self = shift;
361 my $path = $self->{path}; 384 my $path = $self->{path};
… …
371 394
372 if (-d _ && -r _) { 395 if (-d _ && -r _) {
373 # directory 396 # directory
374 if ($path !~ /\/$/) { 397 if ($path !~ /\/$/) {
375 # create a redirect to get the trailing "/" 398 # create a redirect to get the trailing "/"
376 my $host = $self->server_hostport; 399 # we don't try to avoid the :80
377 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 400 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
378 } else { 401 } else {
379 $ims < $self->{stat}[9] 402 $ims < $self->{stat}[9]
380 or $self->err(304, "not modified"); 403 or $self->err(304, "not modified");
381 404
382 if ($self->{method} eq "GET") {
383 if (-r "$path/index.html") { 405 if (-r "$path/index.html") {
384 $self->{path} .= "/index.html"; 406 $self->{path} .= "/index.html";
385 $self->handle_file; 407 $self->handle_file;
386 } else { 408 } else {
387 $self->handle_dir; 409 $self->handle_dir;
388 }
389 } 410 }
390 } 411 }
391 } elsif (-f _ && -r _) { 412 } elsif (-f _ && -r _) {
392 -x _ and $self->err(403, "forbidden"); 413 -x _ and $self->err(403, "forbidden");
393 $self->handle_file; 414 $self->handle_file;
… …
408 $idx); 429 $idx);
409} 430}
410 431
411sub handle_file { 432sub handle_file {
412 my $self = shift; 433 my $self = shift;
413 my $length = -s _; 434 my $length = $self->{stat}[7];
435 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
414 my $hdr = { 436 my $hdr = {
415 "Last-Modified" => time2str ((stat _)[9]), 437 "Last-Modified" => time2str ((stat _)[9]),
416 }; 438 };
417 439
418 my @code = (200, "ok"); 440 my @code = (200, "ok");
… …
426 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 448 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
427 } else { 449 } else {
428 ($l, $h) = (0, $length - 1); 450 ($l, $h) = (0, $length - 1);
429 goto ignore; 451 goto ignore;
430 } 452 }
431 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 453 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
432 } 454 }
433 $hdr->{"Content-Range"} = "bytes */$length"; 455 $hdr->{"Content-Range"} = "bytes */$length";
434 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")"); 456 $hdr->{"Content-Length"} = $length;
435 $self->err(416, "not satisfiable", $hdr); 457 $self->err(416, "not satisfiable", $hdr, "");
436 458
437satisfiable: 459satisfiable:
438 # check for segmented downloads 460 # check for segmented downloads
439 if ($l && $::NO_SEGMENTED) { 461 if ($l && $::NO_SEGMENTED) {
462 my $delay = 180;
440 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 463 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) {
464 if ($delay <= 0) {
465 $self->err_segmented_download;
466 } else {
441 Coro::Event::do_timer(after => 15); 467 Coro::Event::do_timer(after => 3); $delay -= 3;
442 468 }
443 $self->err(400, "segmented downloads are not allowed");
444 } 469 }
445 } 470 }
446 471
447 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 472 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
448 @code = (206, "partial content"); 473 @code = (206, "partial content");
… …
458 $hdr->{"Content-Length"} = $length; 483 $hdr->{"Content-Length"} = $length;
459 484
460 $self->response(@code, $hdr, ""); 485 $self->response(@code, $hdr, "");
461 486
462 if ($self->{method} eq "GET") { 487 if ($self->{method} eq "GET") {
488 $self->{time} = $::NOW;
489
490 my $fudge = $queue->[0]->waiters;
491 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
492
493 $queue->[1] *= $fudge;
494 my $transfer = $queue->[0]->guard;
495
496 if ($fudge != 1) {
497 $queue->[1] /= $fudge;
498 $queue->[1] = $queue->[1] * $::wait_factor
499 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
500 }
501 $self->{time} = $::NOW;
502
503 $self->{fh}->writable or return;
504
463 my ($fh, $buf, $r); 505 my ($fh, $buf, $r);
464 my $current = $Coro::current; 506 my $current = $Coro::current;
465 open $fh, "<", $self->{path} 507 open $fh, "<", $self->{path}
466 or die "$self->{path}: late open failure ($!)"; 508 or die "$self->{path}: late open failure ($!)";
467 509
… …
476 while ($h > 0) { 518 while ($h > 0) {
477 if (0) { 519 if (0) {
478 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 520 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
479 or last; 521 or last;
480 } else { 522 } else {
523 undef $buf;
524 $aio_requests->down;
481 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 525 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
482 $buf, 0, sub { 526 $buf, 0, sub {
483 $r = $_[0]; 527 $r = $_[0];
484 $current->ready; 528 $current->ready;
485 }); 529 });
486 &Coro::schedule; 530 &Coro::schedule;
531 $aio_requests->up;
487 last unless $r; 532 last unless $r;
488 } 533 }
489 my $w = $self->{fh}->syswrite($buf) 534 my $w = $self->{fh}->syswrite($buf)
490 or last; 535 or last;
491 $::written += $w; 536 $::written += $w;
492 $self->{written} += $w; 537 $self->{written} += $w;
493 $l += $r; 538 $l += $r;
494 } 539 }
495 }
496 540
497 close $fh; 541 close $fh;
542 }
498} 543}
499 544
5001; 5451;

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