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/cvs/cvsroot/Coro/myhttpd/httpd.pl
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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.27 by root, Sun Aug 19 23:57:52 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 $msg\015\012";
154 169
155 #$res .= "Connection: close\015\012"; 170 $self->{h}{connection} ||= $hdr->{Connection};
156 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 171
172 $res .= "Date: $HTTP_NOW\015\012";
157 173
158 while (my ($h, $v) = each %$hdr) { 174 while (my ($h, $v) = each %$hdr) {
159 $res .= "$h: $v\015\012" 175 $res .= "$h: $v\015\012"
160 } 176 }
161 $res .= "\015\012"; 177 $res .= "\015\012";
… …
185 $self->response($code, $msg, $hdr, $content); 201 $self->response($code, $msg, $hdr, $content);
186 202
187 die bless {}, err::; 203 die bless {}, err::;
188} 204}
189 205
190sub err_blocked {
191 my $self = shift;
192 my $ip = $self->{remote_addr};
193 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
194
195 Coro::Event::do_timer(after => 20*rand);
196
197 $self->err(401, "too many connections",
198 {
199 "Content-Type" => "text/html",
200 "Retry-After" => $::BLOCKTIME,
201 "Warning" => "Please do NOT retry, you have been blocked",
202 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
203 },
204 <<EOF);
205<html>
206<head>
207<title>Too many connections</title>
208</head>
209<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000">
210
211<p>You have been blocked because you opened too many connections. You
212may retry at</p>
213
214 <p><blockquote>$time.</blockquote></p>
215
216<p>Until then, each new access will renew the block. You might want to have a
217look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
218
219</body></html>
220EOF
221}
222
223sub handle { 206sub handle {
224 my $self = shift; 207 my $self = shift;
225 my $fh = $self->{fh}; 208 my $fh = $self->{fh};
209
210 my $host;
226 211
227 $fh->timeout($::REQ_TIMEOUT); 212 $fh->timeout($::REQ_TIMEOUT);
228 while() { 213 while() {
229 $self->{reqs}++; 214 $self->{reqs}++;
230 215
… …
250 235
251 delete $blocked{$ip}; 236 delete $blocked{$ip};
252 } 237 }
253 238
254 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) {
255 $self->slog(2, "blocked ip $ip"); 243 $self->slog(2, "blocked ip $ip");
256 $self->err_blocked; 244 $self->err_blocked;
245 } else {
246 Coro::Event::do_timer(after => 3);
247 $delay -= 3;
248 }
249 }
257 } 250 }
258 251
259 $req =~ /^(?:\015\012)? 252 $req =~ /^(?:\015\012)?
260 (GET|HEAD) \040+ 253 (GET|HEAD) \040+
261 ([^\040]+) \040+ 254 ([^\040]+) \040+
… …
287 280
288 $self->{h}{$h} = substr $v, 1 281 $self->{h}{$h} = substr $v, 1
289 while ($h, $v) = each %hdr; 282 while ($h, $v) = each %hdr;
290 } 283 }
291 284
285 # find out server name and port
286 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
287 $host = $1;
288 } else {
289 $host = $self->{h}{host};
290 }
291
292 if (defined $host) {
292 $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 }
293 311
294 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 312 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self);
295 313
296 eval { 314 eval {
297 $self->map_uri; 315 $self->map_uri;
… …
300 318
301 $self->eoconn; 319 $self->eoconn;
302 320
303 die if $@ && !ref $@; 321 die if $@ && !ref $@;
304 322
305 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 323 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
306 324
307 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
308 $fh->timeout($::PER_TIMEOUT); 325 $fh->timeout($::PER_TIMEOUT);
309 } 326 }
310} 327}
311 328
312# uri => path mapping 329# uri => path mapping
313sub map_uri { 330sub map_uri {
314 my $self = shift; 331 my $self = shift;
315 my $host = $self->{h}{host} || "default"; 332 my $host = $self->{server_name};
316 my $uri = $self->{uri}; 333 my $uri = $self->{uri};
317 334
318 # some massaging, also makes it more secure 335 # some massaging, also makes it more secure
319 $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;
320 $uri =~ s%//+%/%g; 337 $uri =~ s%//+%/%g;
… …
330 $self->{path} = "$::DOCROOT/$host$uri"; 347 $self->{path} = "$::DOCROOT/$host$uri";
331 348
332 $self->access_check; 349 $self->access_check;
333} 350}
334 351
335sub server_address {
336 my $self = shift;
337 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
338 or $self->err(500, "unable to get socket name");
339 ((inet_ntoa $iaddr), $port);
340}
341
342sub server_host {
343 my $self = shift;
344 if (exists $self->{h}{host}) {
345 return $self->{h}{host};
346 } else {
347 return (($self->server_address)[0]);
348 }
349}
350
351sub server_hostport {
352 my $self = shift;
353 my ($host, $port);
354 if (exists $self->{h}{host}) {
355 ($host, $port) = ($self->{h}{host}, $self->{server_port});
356 } else {
357 ($host, $port) = $self->server_address;
358 }
359 $port = $port == 80 ? "" : ":$port";
360 $host.$port;
361}
362
363sub _cgi { 352sub _cgi {
364 my $self = shift; 353 my $self = shift;
365 my $path = shift; 354 my $path = shift;
366 my $fh; 355 my $fh;
367 356
368 # no two-way xxx supported 357 # no two-way xxx supported
369 if (0 == fork) { 358 if (0 == fork) {
370 open STDOUT, ">&".fileno($self->{fh}); 359 open STDOUT, ">&".fileno($self->{fh});
371 if (chdir $::DOCROOT) { 360 if (chdir $::DOCROOT) {
372 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 361 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
373 $ENV{HTTP_HOST} = $self->server_host; 362 $ENV{HTTP_HOST} = $self->{server_name};
374 $ENV{HTTP_PORT} = $self->{server_host}; 363 $ENV{HTTP_PORT} = $self->{server_port};
375 $ENV{SCRIPT_NAME} = $self->{name}; 364 $ENV{SCRIPT_NAME} = $self->{name};
376 exec $path; 365 exec $path;
377 } 366 }
378 Coro::State::_exit(0); 367 Coro::State::_exit(0);
379 } else { 368 } else {
369 die;
380 } 370 }
371}
372
373sub server_hostport {
374 $_[0]{server_port} == 80
375 ? $_[0]{server_name}
376 : "$_[0]{server_name}:$_[0]{server_port}";
381} 377}
382 378
383sub respond { 379sub respond {
384 my $self = shift; 380 my $self = shift;
385 my $path = $self->{path}; 381 my $path = $self->{path};
… …
395 391
396 if (-d _ && -r _) { 392 if (-d _ && -r _) {
397 # directory 393 # directory
398 if ($path !~ /\/$/) { 394 if ($path !~ /\/$/) {
399 # create a redirect to get the trailing "/" 395 # create a redirect to get the trailing "/"
400 my $host = $self->server_hostport; 396 # we don't try to avoid the :80
401 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 397 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
402 } else { 398 } else {
403 $ims < $self->{stat}[9] 399 $ims < $self->{stat}[9]
404 or $self->err(304, "not modified"); 400 or $self->err(304, "not modified");
405 401
406 if (-r "$path/index.html") { 402 if (-r "$path/index.html") {
… …
458 $self->err(416, "not satisfiable", $hdr, ""); 454 $self->err(416, "not satisfiable", $hdr, "");
459 455
460satisfiable: 456satisfiable:
461 # check for segmented downloads 457 # check for segmented downloads
462 if ($l && $::NO_SEGMENTED) { 458 if ($l && $::NO_SEGMENTED) {
459 my $delay = 180;
463 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 460 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) {
464 $self->err(400, "segmented downloads are not allowed"); 461 if ($delay <= 0) {
462 $self->err_segmented_download;
463 } else {
464 Coro::Event::do_timer(after => 3); $delay -= 3;
465 }
465 } 466 }
466 } 467 }
467 468
468 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 469 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
469 @code = (206, "partial content"); 470 @code = (206, "partial content");
… …
479 $hdr->{"Content-Length"} = $length; 480 $hdr->{"Content-Length"} = $length;
480 481
481 $self->response(@code, $hdr, ""); 482 $self->response(@code, $hdr, "");
482 483
483 if ($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} = $::NOW;
493
484 my ($fh, $buf, $r); 494 my ($fh, $buf, $r);
485 my $current = $Coro::current; 495 my $current = $Coro::current;
486 open $fh, "<", $self->{path} 496 open $fh, "<", $self->{path}
487 or die "$self->{path}: late open failure ($!)"; 497 or die "$self->{path}: late open failure ($!)";
488 498
… …
497 while ($h > 0) { 507 while ($h > 0) {
498 if (0) { 508 if (0) {
499 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 509 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
500 or last; 510 or last;
501 } else { 511 } else {
512 undef $buf;
513 $aio_requests->down;
502 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 514 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
503 $buf, 0, sub { 515 $buf, 0, sub {
504 $r = $_[0]; 516 $r = $_[0];
505 $current->ready; 517 $current->ready;
506 }); 518 });
507 &Coro::schedule; 519 &Coro::schedule;
520 $aio_requests->up;
508 last unless $r; 521 last unless $r;
509 } 522 }
510 my $w = $self->{fh}->syswrite($buf) 523 my $w = $self->{fh}->syswrite($buf)
511 or last; 524 or last;
512 $::written += $w; 525 $::written += $w;
513 $self->{written} += $w; 526 $self->{written} += $w;
514 $l += $r; 527 $l += $r;
515 } 528 }
516 }
517 529
518 close $fh; 530 close $fh;
531 }
519} 532}
520 533
5211; 5341;

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