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/cvs/cvsroot/Coro/myhttpd/httpd.pl
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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.17 by root, Wed Aug 15 03:06:21 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 $wait_time_length = 25;
8 13
9# at least on my machine, this thingy serves files 14# at least on my machine, this thingy serves files
10# quite a bit faster than apache, ;) 15# quite a bit faster than apache, ;)
11# and quite a bit slower than thttpd :( 16# and quite a bit slower than thttpd :(
12 17
13$SIG{PIPE} = 'IGNORE'; 18$SIG{PIPE} = 'IGNORE';
14 19
20our $accesslog;
21
22if ($ACCESS_LOG) {
23 use IO::Handle;
24 open $accesslog, ">>$ACCESS_LOG"
25 or die "$ACCESS_LOG: $!";
26 $accesslog->autoflush(1);
27}
28
15sub slog { 29sub slog {
16 my $level = shift; 30 my $level = shift;
17 my $format = shift; 31 my $format = shift;
18 printf "---: $format\n", @_; 32 printf "---: $format\n", @_;
19} 33}
20 34
21my $connections = new Coro::Semaphore $MAX_CONNECTS; 35our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
36our $transfers = new Coro::Semaphore $MAX_TRANSFER || 50;
22 37
23my @newcons; 38my @newcons;
24my @pool; 39my @pool;
25 40
26# one "execution thread" 41# one "execution thread"
… …
48 Listen => 50, 63 Listen => 50,
49 or die "unable to start server"; 64 or die "unable to start server";
50 65
51push @listen_sockets, $http_port; 66push @listen_sockets, $http_port;
52 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
53# the "main thread" 76# the "main thread"
54async { 77async {
55 slog 1, "accepting connections"; 78 slog 1, "accepting connections";
56 while () { 79 while () {
57 $connections->down; 80 $connections->down;
58 push @newcons, [$http_port->accept]; 81 push @newcons, [$http_port->accept];
59 #slog 3, "accepted @$connections ".scalar(@pool); 82 #slog 3, "accepted @$connections ".scalar(@pool);
60 $::NOW = time;
61 if (@pool) { 83 if (@pool) {
62 (pop @pool)->ready; 84 (pop @pool)->ready;
63 } else { 85 } else {
64 async \&handler; 86 async \&handler;
65 } 87 }
… …
74use Convert::Scalar 'weaken'; 96use Convert::Scalar 'weaken';
75use Linux::AIO; 97use Linux::AIO;
76 98
77Linux::AIO::min_parallel $::AIO_PARALLEL; 99Linux::AIO::min_parallel $::AIO_PARALLEL;
78 100
101my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
102
79Event->io(fd => Linux::AIO::poll_fileno, 103Event->io(fd => Linux::AIO::poll_fileno,
80 poll => 'r', async => 1, 104 poll => 'r', async => 1,
81 cb => \&Linux::AIO::poll_cb ); 105 cb => \&Linux::AIO::poll_cb);
82 106
83Event->add_hooks(prepare => sub {
84 &Coro::cede;
85});
86
87our %conn; # $conn{ip}{fh} => connobj 107our %conn; # $conn{ip}{self} => connobj
108our %uri; # $uri{ip}{uri}{self}
88our %blocked; 109our %blocked;
89our %mimetype; 110our %mimetype;
90 111
91sub read_mimetypes { 112sub read_mimetypes {
92 local *M; 113 local *M;
… …
125sub DESTROY { 146sub DESTROY {
126 my $self = shift; 147 my $self = shift;
127 148
128 $::conns--; 149 $::conns--;
129 150
151 $self->eoconn;
130 delete $conn{$self->{remote_addr}}{$self*1}; 152 delete $conn{$self->{remote_addr}}{$self*1};
153}
154
155# end of connection
156sub eoconn {
157 my $self = shift;
131 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 158 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1};
132} 159}
133 160
134sub slog { 161sub slog {
135 my $self = shift; 162 my $self = shift;
136 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 163 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
137} 164}
138 165
139sub response { 166sub response {
140 my ($self, $code, $msg, $hdr, $content) = @_; 167 my ($self, $code, $msg, $hdr, $content) = @_;
141 my $res = "HTTP/1.1 $code $msg\015\012"; 168 my $res = "HTTP/1.1 $code $msg\015\012";
142 169
143 #$res .= "Connection: close\015\012"; 170 $self->{h}{connection} ||= $hdr->{Connection};
144 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 171
172 $res .= "Date: $HTTP_NOW\015\012";
145 173
146 while (my ($h, $v) = each %$hdr) { 174 while (my ($h, $v) = each %$hdr) {
147 $res .= "$h: $v\015\012" 175 $res .= "$h: $v\015\012"
148 } 176 }
149 $res .= "\015\012"; 177 $res .= "\015\012";
150 178
151 $res .= $content if defined $content and $self->{method} ne "HEAD"; 179 $res .= $content if defined $content and $self->{method} ne "HEAD";
152 180
153 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# 181 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
182
183 print $accesslog $log if $accesslog;
184 print STDERR $log;
154 185
155 $self->{written} += 186 $self->{written} +=
156 print {$self->{fh}} $res; 187 print {$self->{fh}} $res;
157} 188}
158 189
… …
170 $self->response($code, $msg, $hdr, $content); 201 $self->response($code, $msg, $hdr, $content);
171 202
172 die bless {}, err::; 203 die bless {}, err::;
173} 204}
174 205
175sub err_blocked {
176 my $self = shift;
177 my $ip = $self->{remote_addr};
178 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
179
180 Coro::Event::do_timer(after => 15);
181
182 $self->err(401, "too many connections",
183 {
184 "Content-Type" => "text/html",
185 "Retry-After" => $::BLOCKTIME
186 },
187 <<EOF);
188<html><p>
189You have been blocked because you opened too many connections. You
190may retry at</p>
191
192 <p><blockquote>$time.</blockquote></p>
193
194<p>Until then, each new access will renew the block. You might want to have a
195look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
196</html>
197EOF
198}
199
200sub handle { 206sub handle {
201 my $self = shift; 207 my $self = shift;
202 my $fh = $self->{fh}; 208 my $fh = $self->{fh};
209
210 my $host;
203 211
204 $fh->timeout($::REQ_TIMEOUT); 212 $fh->timeout($::REQ_TIMEOUT);
205 while() { 213 while() {
206 $self->{reqs}++; 214 $self->{reqs}++;
207 215
… …
227 235
228 delete $blocked{$ip}; 236 delete $blocked{$ip};
229 } 237 }
230 238
231 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) {
232 $self->slog(2, "blocked ip $ip"); 243 $self->slog(2, "blocked ip $ip");
233 $self->err_blocked; 244 $self->err_blocked;
245 } else {
246 Coro::Event::do_timer(after => 3);
247 $delay -= 3;
248 }
249 }
234 } 250 }
235 251
236 $req =~ /^(?:\015\012)? 252 $req =~ /^(?:\015\012)?
237 (GET|HEAD) \040+ 253 (GET|HEAD) \040+
238 ([^\040]+) \040+ 254 ([^\040]+) \040+
… …
242 258
243 $self->{method} = $1; 259 $self->{method} = $1;
244 $self->{uri} = $2; 260 $self->{uri} = $2;
245 $self->{version} = $3; 261 $self->{version} = $3;
246 262
247 $3 eq "1.0" or $3 eq "1.1" 263 $3 =~ /^1\./
248 or $self->err(506, "http protocol version $3 not supported"); 264 or $self->err(506, "http protocol version $3 not supported");
249 265
250 # parse headers 266 # parse headers
251 { 267 {
252 my (%hdr, $h, $v); 268 my (%hdr, $h, $v);
… …
264 280
265 $self->{h}{$h} = substr $v, 1 281 $self->{h}{$h} = substr $v, 1
266 while ($h, $v) = each %hdr; 282 while ($h, $v) = each %hdr;
267 } 283 }
268 284
285 # find out server name and port
286 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
287 $host = $1;
288 } else {
289 $host = $self->{h}{host};
290 }
291
292 if (defined $host) {
269 $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 }
270 311
271 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 312 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self);
272 313
314 eval {
273 $self->map_uri; 315 $self->map_uri;
274 $self->respond; 316 $self->respond;
317 };
275 318
319 $self->eoconn;
320
321 die if $@ && !ref $@;
322
276 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 323 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
277 324
278 $self->slog(9, "persistant connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
279 $fh->timeout($::PER_TIMEOUT); 325 $fh->timeout($::PER_TIMEOUT);
280 } 326 }
281} 327}
282 328
283# uri => path mapping 329# uri => path mapping
284sub map_uri { 330sub map_uri {
285 my $self = shift; 331 my $self = shift;
286 my $host = $self->{h}{host} || "default"; 332 my $host = $self->{server_name};
287 my $uri = $self->{uri}; 333 my $uri = $self->{uri};
288 334
289 # some massaging, also makes it more secure 335 # some massaging, also makes it more secure
290 $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;
291 $uri =~ s%//+%/%g; 337 $uri =~ s%//+%/%g;
… …
301 $self->{path} = "$::DOCROOT/$host$uri"; 347 $self->{path} = "$::DOCROOT/$host$uri";
302 348
303 $self->access_check; 349 $self->access_check;
304} 350}
305 351
306sub server_address {
307 my $self = shift;
308 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
309 or $self->err(500, "unable to get socket name");
310 ((inet_ntoa $iaddr), $port);
311}
312
313sub server_host {
314 my $self = shift;
315 if (exists $self->{h}{host}) {
316 return $self->{h}{host};
317 } else {
318 return (($self->server_address)[0]);
319 }
320}
321
322sub server_hostport {
323 my $self = shift;
324 my ($host, $port);
325 if (exists $self->{h}{host}) {
326 ($host, $port) = ($self->{h}{host}, $self->{server_port});
327 } else {
328 ($host, $port) = $self->server_address;
329 }
330 $port = $port == 80 ? "" : ":$port";
331 $host.$port;
332}
333
334sub _cgi { 352sub _cgi {
335 my $self = shift; 353 my $self = shift;
336 my $path = shift; 354 my $path = shift;
337 my $fh; 355 my $fh;
338 356
339 # no two-way xxx supported 357 # no two-way xxx supported
340 if (0 == fork) { 358 if (0 == fork) {
341 open STDOUT, ">&".fileno($self->{fh}); 359 open STDOUT, ">&".fileno($self->{fh});
342 if (chdir $::DOCROOT) { 360 if (chdir $::DOCROOT) {
343 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 361 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
344 $ENV{HTTP_HOST} = $self->server_host; 362 $ENV{HTTP_HOST} = $self->{server_name};
345 $ENV{HTTP_PORT} = $self->{server_host}; 363 $ENV{HTTP_PORT} = $self->{server_port};
346 $ENV{SCRIPT_NAME} = $self->{name}; 364 $ENV{SCRIPT_NAME} = $self->{name};
347 exec $path; 365 exec $path;
348 } 366 }
349 Coro::State::_exit(0); 367 Coro::State::_exit(0);
350 } else { 368 } else {
369 die;
351 } 370 }
371}
372
373sub server_hostport {
374 $_[0]{server_port} == 80
375 ? $_[0]{server_name}
376 : "$_[0]{server_name}:$_[0]{server_port}";
352} 377}
353 378
354sub respond { 379sub respond {
355 my $self = shift; 380 my $self = shift;
356 my $path = $self->{path}; 381 my $path = $self->{path};
… …
366 391
367 if (-d _ && -r _) { 392 if (-d _ && -r _) {
368 # directory 393 # directory
369 if ($path !~ /\/$/) { 394 if ($path !~ /\/$/) {
370 # create a redirect to get the trailing "/" 395 # create a redirect to get the trailing "/"
371 my $host = $self->server_hostport; 396 # we don't try to avoid the :80
372 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 397 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
373 } else { 398 } else {
374 $ims < $self->{stat}[9] 399 $ims < $self->{stat}[9]
375 or $self->err(304, "not modified"); 400 or $self->err(304, "not modified");
376 401
377 if ($self->{method} eq "GET") {
378 if (-r "$path/index.html") { 402 if (-r "$path/index.html") {
379 $self->{path} .= "/index.html"; 403 $self->{path} .= "/index.html";
380 $self->handle_file; 404 $self->handle_file;
381 } else { 405 } else {
382 $self->handle_dir; 406 $self->handle_dir;
383 }
384 } 407 }
385 } 408 }
386 } elsif (-f _ && -r _) { 409 } elsif (-f _ && -r _) {
387 -x _ and $self->err(403, "forbidden"); 410 -x _ and $self->err(403, "forbidden");
388 $self->handle_file; 411 $self->handle_file;
… …
421 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 444 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
422 } else { 445 } else {
423 ($l, $h) = (0, $length - 1); 446 ($l, $h) = (0, $length - 1);
424 goto ignore; 447 goto ignore;
425 } 448 }
426 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 449 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
427 } 450 }
428 $hdr->{"Content-Range"} = "bytes */$length"; 451 $hdr->{"Content-Range"} = "bytes */$length";
452 $hdr->{"Content-Length"} = $length;
453 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
429 $self->err(416, "not satisfiable", $hdr); 454 $self->err(416, "not satisfiable", $hdr, "");
430 455
431satisfiable: 456satisfiable:
432 # check for segmented downloads 457 # check for segmented downloads
433 if ($l && $::NO_SEGMENTED) { 458 if ($l && $::NO_SEGMENTED) {
459 my $delay = 180;
434 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 460 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) {
461 if ($delay <= 0) {
462 $self->err_segmented_download;
463 } else {
435 Coro::Event::do_timer(after => 15); 464 Coro::Event::do_timer(after => 3); $delay -= 3;
436 465 }
437 $self->err(400, "segmented downloads are not allowed");
438 } 466 }
439 } 467 }
440 468
441 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 469 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
442 @code = (206, "partial content"); 470 @code = (206, "partial content");
… …
452 $hdr->{"Content-Length"} = $length; 480 $hdr->{"Content-Length"} = $length;
453 481
454 $self->response(@code, $hdr, ""); 482 $self->response(@code, $hdr, "");
455 483
456 if ($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} = $::NOW;
493
457 my ($fh, $buf, $r); 494 my ($fh, $buf, $r);
458 my $current = $Coro::current; 495 my $current = $Coro::current;
459 open $fh, "<", $self->{path} 496 open $fh, "<", $self->{path}
460 or die "$self->{path}: late open failure ($!)"; 497 or die "$self->{path}: late open failure ($!)";
461 498
462 $h -= $l - 1; 499 $h -= $l - 1;
463 500
501 if (0) {
502 if ($l) {
503 sysseek $fh, $l, 0;
504 }
505 }
506
464 while ($h > 0) { 507 while ($h > 0) {
508 if (0) {
509 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
510 or last;
511 } else {
512 undef $buf;
513 $aio_requests->down;
465 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 514 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
466 $buf, 0, sub { 515 $buf, 0, sub {
467 $r = $_[0]; 516 $r = $_[0];
468 $current->ready; 517 $current->ready;
469 }); 518 });
470 &Coro::schedule; 519 &Coro::schedule;
520 $aio_requests->up;
471 last unless $r; 521 last unless $r;
522 }
472 my $w = $self->{fh}->syswrite($buf) 523 my $w = $self->{fh}->syswrite($buf)
473 or last; 524 or last;
474 $::written += $w; 525 $::written += $w;
475 $self->{written} += $w; 526 $self->{written} += $w;
476 $l += $r; 527 $l += $r;
477 } 528 }
478 }
479 529
480 close $fh; 530 close $fh;
531 }
481} 532}
482 533
4831; 5341;

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