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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.28 by root, Mon Aug 20 16:58:19 2001 UTC vs.
Revision 1.33 by root, Wed Aug 29 01:40:44 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;
10
11our @wait_time = (); # used to calculcate avg. waiting time
12our $wait_time_length = 25;
8 13
9# at least on my machine, this thingy serves files 14# at least on my machine, this thingy serves files
10# quite a bit faster than apache, ;) 15# quite a bit faster than apache, ;)
11# and quite a bit slower than thttpd :( 16# and quite a bit slower than thttpd :(
12 17
… …
25 my $level = shift; 30 my $level = shift;
26 my $format = shift; 31 my $format = shift;
27 printf "---: $format\n", @_; 32 printf "---: $format\n", @_;
28} 33}
29 34
30my $connections = new Coro::Semaphore $MAX_CONNECTS; 35our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
36our $transfers = new Coro::Semaphore $MAX_TRANSFER || 50;
31 37
32my @newcons; 38my @newcons;
33my @pool; 39my @pool;
34 40
35# one "execution thread" 41# one "execution thread"
… …
57 Listen => 50, 63 Listen => 50,
58 or die "unable to start server"; 64 or die "unable to start server";
59 65
60push @listen_sockets, $http_port; 66push @listen_sockets, $http_port;
61 67
68our $NOW;
69our $HTTP_NOW;
70
71Event->timer(interval => 1, hard => 1, cb => sub {
72 $NOW = time;
73 $HTTP_NOW = time2str $NOW;
74});
75
62# the "main thread" 76# the "main thread"
63async { 77async {
64 slog 1, "accepting connections"; 78 slog 1, "accepting connections";
65 while () { 79 while () {
66 $connections->down; 80 $connections->down;
67 push @newcons, [$http_port->accept]; 81 push @newcons, [$http_port->accept];
68 #slog 3, "accepted @$connections ".scalar(@pool); 82 #slog 3, "accepted @$connections ".scalar(@pool);
69 $::NOW = time;
70 if (@pool) { 83 if (@pool) {
71 (pop @pool)->ready; 84 (pop @pool)->ready;
72 } else { 85 } else {
73 async \&handler; 86 async \&handler;
74 } 87 }
… …
82use HTTP::Date; 95use HTTP::Date;
83use Convert::Scalar 'weaken'; 96use Convert::Scalar 'weaken';
84use Linux::AIO; 97use Linux::AIO;
85 98
86Linux::AIO::min_parallel $::AIO_PARALLEL; 99Linux::AIO::min_parallel $::AIO_PARALLEL;
100
101my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
87 102
88Event->io(fd => Linux::AIO::poll_fileno, 103Event->io(fd => Linux::AIO::poll_fileno,
89 poll => 'r', async => 1, 104 poll => 'r', async => 1,
90 cb => \&Linux::AIO::poll_cb); 105 cb => \&Linux::AIO::poll_cb);
91 106
… …
143 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 158 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1};
144} 159}
145 160
146sub slog { 161sub slog {
147 my $self = shift; 162 my $self = shift;
148 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 163 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
149} 164}
150 165
151sub response { 166sub response {
152 my ($self, $code, $msg, $hdr, $content) = @_; 167 my ($self, $code, $msg, $hdr, $content) = @_;
153 my $res = "HTTP/1.1 $code $msg\015\012"; 168 my $res = "HTTP/1.1 $code $msg\015\012";
154 169
155 $self->{h}{connection} ||= $hdr->{Connection}; 170 $self->{h}{connection} ||= $hdr->{Connection};
156 171
157 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 172 $res .= "Date: $HTTP_NOW\015\012";
158 173
159 while (my ($h, $v) = each %$hdr) { 174 while (my ($h, $v) = each %$hdr) {
160 $res .= "$h: $v\015\012" 175 $res .= "$h: $v\015\012"
161 } 176 }
162 $res .= "\015\012"; 177 $res .= "\015\012";
… …
186 $self->response($code, $msg, $hdr, $content); 201 $self->response($code, $msg, $hdr, $content);
187 202
188 die bless {}, err::; 203 die bless {}, err::;
189} 204}
190 205
191sub err_blocked {
192 my $self = shift;
193 my $ip = $self->{remote_addr};
194 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
195
196 Coro::Event::do_timer(after => 20*rand);
197
198 $self->err(401, "too many connections",
199 {
200 "Content-Type" => "text/html",
201 "Retry-After" => $::BLOCKTIME,
202 "Warning" => "Please do NOT retry, you have been blocked",
203 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
204 "Connection" => "close",
205 },
206 <<EOF);
207<html>
208<head>
209<title>Too many connections</title>
210</head>
211<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000">
212
213<p>You have been blocked because you opened too many connections. You
214may retry at</p>
215
216 <p><blockquote>$time.</blockquote></p>
217
218<p>Until then, each new access will renew the block. You might want to have a
219look at the <a href="http://www.goof.com/pcg/marc/animefaq.html#connectionlimit">FAQ</a>.</p>
220
221</body></html>
222EOF
223}
224
225sub handle { 206sub handle {
226 my $self = shift; 207 my $self = shift;
227 my $fh = $self->{fh}; 208 my $fh = $self->{fh};
209
210 my $host;
228 211
229 $fh->timeout($::REQ_TIMEOUT); 212 $fh->timeout($::REQ_TIMEOUT);
230 while() { 213 while() {
231 $self->{reqs}++; 214 $self->{reqs}++;
232 215
… …
252 235
253 delete $blocked{$ip}; 236 delete $blocked{$ip};
254 } 237 }
255 238
256 if (%{$conn{$ip}} > $::MAX_CONN_IP) { 239 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
240 my $delay = 120;
241 while (%{$conn{$ip}} > $::MAX_CONN_IP) {
242 if ($delay <= 0) {
257 $self->slog(2, "blocked ip $ip"); 243 $self->slog(2, "blocked ip $ip");
258 $self->err_blocked; 244 $self->err_blocked;
245 } else {
246 Coro::Event::do_timer(after => 3);
247 $delay -= 3;
248 }
249 }
259 } 250 }
260 251
261 $req =~ /^(?:\015\012)? 252 $req =~ /^(?:\015\012)?
262 (GET|HEAD) \040+ 253 (GET|HEAD) \040+
263 ([^\040]+) \040+ 254 ([^\040]+) \040+
… …
289 280
290 $self->{h}{$h} = substr $v, 1 281 $self->{h}{$h} = substr $v, 1
291 while ($h, $v) = each %hdr; 282 while ($h, $v) = each %hdr;
292 } 283 }
293 284
285 # find out server name and port
286 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
287 $host = $1;
288 } else {
289 $host = $self->{h}{host};
290 }
291
292 if (defined $host) {
294 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 293 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
294 } else {
295 ($self->{server_port}, $host)
296 = unpack_sockaddr_in $self->{fh}->getsockname
297 or $self->err(500, "unable to get socket name");
298 $host = inet_ntoa $host;
299 }
300
301 $self->{server_name} = $host;
302
303 # remote id should be unique per user
304 $self->{remote_id} = $self->{remote_addr};
305
306 if (exists $self->{h}{"client-ip"}) {
307 $self->{remote_id} .= "[".$self->{h}{"client-ip"}."]";
308 } elsif (exists $self->{h}{"x-forwarded-for"}) {
309 $self->{remote_id} .= "[".$self->{h}{"x-forwarded-for"}."]";
310 }
295 311
296 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 312 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self);
297 313
298 eval { 314 eval {
299 $self->map_uri; 315 $self->map_uri;
… …
302 318
303 $self->eoconn; 319 $self->eoconn;
304 320
305 die if $@ && !ref $@; 321 die if $@ && !ref $@;
306 322
307 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 323 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
308 324
309 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
310 $fh->timeout($::PER_TIMEOUT); 325 $fh->timeout($::PER_TIMEOUT);
311 } 326 }
312} 327}
313 328
314# uri => path mapping 329# uri => path mapping
315sub map_uri { 330sub map_uri {
316 my $self = shift; 331 my $self = shift;
317 my $host = $self->{h}{host} || "default"; 332 my $host = $self->{server_name};
318 my $uri = $self->{uri}; 333 my $uri = $self->{uri};
319 334
320 # some massaging, also makes it more secure 335 # some massaging, also makes it more secure
321 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 336 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
322 $uri =~ s%//+%/%g; 337 $uri =~ s%//+%/%g;
… …
332 $self->{path} = "$::DOCROOT/$host$uri"; 347 $self->{path} = "$::DOCROOT/$host$uri";
333 348
334 $self->access_check; 349 $self->access_check;
335} 350}
336 351
337sub server_address {
338 my $self = shift;
339 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
340 or $self->err(500, "unable to get socket name");
341 ((inet_ntoa $iaddr), $port);
342}
343
344sub server_host {
345 my $self = shift;
346 if (exists $self->{h}{host}) {
347 return $self->{h}{host};
348 } else {
349 return (($self->server_address)[0]);
350 }
351}
352
353sub server_hostport {
354 my $self = shift;
355 my ($host, $port);
356 if (exists $self->{h}{host}) {
357 ($host, $port) = ($self->{h}{host}, $self->{server_port});
358 } else {
359 ($host, $port) = $self->server_address;
360 }
361 $port = $port == 80 ? "" : ":$port";
362 $host.$port;
363}
364
365sub _cgi { 352sub _cgi {
366 my $self = shift; 353 my $self = shift;
367 my $path = shift; 354 my $path = shift;
368 my $fh; 355 my $fh;
369 356
370 # no two-way xxx supported 357 # no two-way xxx supported
371 if (0 == fork) { 358 if (0 == fork) {
372 open STDOUT, ">&".fileno($self->{fh}); 359 open STDOUT, ">&".fileno($self->{fh});
373 if (chdir $::DOCROOT) { 360 if (chdir $::DOCROOT) {
374 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 361 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
375 $ENV{HTTP_HOST} = $self->server_host; 362 $ENV{HTTP_HOST} = $self->{server_name};
376 $ENV{HTTP_PORT} = $self->{server_host}; 363 $ENV{HTTP_PORT} = $self->{server_port};
377 $ENV{SCRIPT_NAME} = $self->{name}; 364 $ENV{SCRIPT_NAME} = $self->{name};
378 exec $path; 365 exec $path;
379 } 366 }
380 Coro::State::_exit(0); 367 Coro::State::_exit(0);
381 } else { 368 } else {
369 die;
382 } 370 }
371}
372
373sub server_hostport {
374 $_[0]{server_port} == 80
375 ? $_[0]{server_name}
376 : "$_[0]{server_name}:$_[0]{server_port}";
383} 377}
384 378
385sub respond { 379sub respond {
386 my $self = shift; 380 my $self = shift;
387 my $path = $self->{path}; 381 my $path = $self->{path};
… …
397 391
398 if (-d _ && -r _) { 392 if (-d _ && -r _) {
399 # directory 393 # directory
400 if ($path !~ /\/$/) { 394 if ($path !~ /\/$/) {
401 # create a redirect to get the trailing "/" 395 # create a redirect to get the trailing "/"
402 my $host = $self->server_hostport; 396 # we don't try to avoid the :80
403 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 397 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
404 } else { 398 } else {
405 $ims < $self->{stat}[9] 399 $ims < $self->{stat}[9]
406 or $self->err(304, "not modified"); 400 or $self->err(304, "not modified");
407 401
408 if (-r "$path/index.html") { 402 if (-r "$path/index.html") {
… …
460 $self->err(416, "not satisfiable", $hdr, ""); 454 $self->err(416, "not satisfiable", $hdr, "");
461 455
462satisfiable: 456satisfiable:
463 # check for segmented downloads 457 # check for segmented downloads
464 if ($l && $::NO_SEGMENTED) { 458 if ($l && $::NO_SEGMENTED) {
459 my $delay = 180;
465 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 460 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) {
466 $self->err(400, "segmented downloads are not allowed", 461 if ($delay <= 0) {
467 { "Content-Type" => "text/html", Connection => "close" }, <<EOF); 462 $self->err_segmented_download;
468<html> 463 } else {
469<head> 464 Coro::Event::do_timer(after => 3); $delay -= 3;
470<title>Segmented downloads are not allowed</title> 465 }
471</head>
472<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000">
473
474<p>Segmented downloads are not allowed on this server. Please refer to the
475<a href="http://www.goof.com/pcg/marc/animefaq.html#segmented_downloads">FAQ</a>.</p>
476
477</body></html>
478EOF
479EOF
480 } 466 }
481 } 467 }
482 468
483 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 469 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
484 @code = (206, "partial content"); 470 @code = (206, "partial content");
… …
494 $hdr->{"Content-Length"} = $length; 480 $hdr->{"Content-Length"} = $length;
495 481
496 $self->response(@code, $hdr, ""); 482 $self->response(@code, $hdr, "");
497 483
498 if ($self->{method} eq "GET") { 484 if ($self->{method} eq "GET") {
485 $self->{time} = $::NOW;
486
487 my $transfer = $::transfers->guard;
488 $self->{fh}->writable or return;
489
490 push @::wait_time, $::NOW - $self->{time};
491 shift @::wait_time if @wait_time > $wait_time_length;
492 $self->{time} = $::NOW;
493
499 my ($fh, $buf, $r); 494 my ($fh, $buf, $r);
500 my $current = $Coro::current; 495 my $current = $Coro::current;
501 open $fh, "<", $self->{path} 496 open $fh, "<", $self->{path}
502 or die "$self->{path}: late open failure ($!)"; 497 or die "$self->{path}: late open failure ($!)";
503 498
… …
512 while ($h > 0) { 507 while ($h > 0) {
513 if (0) { 508 if (0) {
514 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 509 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
515 or last; 510 or last;
516 } else { 511 } else {
512 undef $buf;
513 $aio_requests->down;
517 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 514 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
518 $buf, 0, sub { 515 $buf, 0, sub {
519 $r = $_[0]; 516 $r = $_[0];
520 $current->ready; 517 $current->ready;
521 }); 518 });
522 &Coro::schedule; 519 &Coro::schedule;
520 $aio_requests->up;
523 last unless $r; 521 last unless $r;
524 } 522 }
525 my $w = $self->{fh}->syswrite($buf) 523 my $w = $self->{fh}->syswrite($buf)
526 or last; 524 or last;
527 $::written += $w; 525 $::written += $w;
528 $self->{written} += $w; 526 $self->{written} += $w;
529 $l += $r; 527 $l += $r;
530 } 528 }
531 }
532 529
533 close $fh; 530 close $fh;
531 }
534} 532}
535 533
5361; 5341;

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