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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.29 by root, Sat Aug 25 15:14:03 2001 UTC vs.
Revision 1.49 by root, Wed Nov 28 03:39:46 2001 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;
6
7use HTTP::Date;
8use POSIX ();
5 9
6no utf8; 10no utf8;
7use bytes; 11use bytes;
8 12
9# at least on my machine, this thingy serves files 13# at least on my machine, this thingy serves files
… …
25 my $level = shift; 29 my $level = shift;
26 my $format = shift; 30 my $format = shift;
27 printf "---: $format\n", @_; 31 printf "---: $format\n", @_;
28} 32}
29 33
30my $connections = new Coro::Semaphore $MAX_CONNECTS; 34our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
35our $httpevent = new Coro::Signal;
36
37our $wait_factor = 0.95;
38
39our @transfers = (
40 (new Coro::Semaphore $MAX_TRANSFERS_SMALL),
41 (new Coro::Semaphore $MAX_TRANSFERS_LARGE),
42);
31 43
32my @newcons; 44my @newcons;
33my @pool; 45my @pool;
34 46
35# one "execution thread" 47# one "execution thread"
36sub handler { 48sub handler {
37 while () { 49 while () {
38 my $new = pop @newcons;
39 if ($new) { 50 if (@newcons) {
40 eval { 51 eval {
41 conn->new(@$new)->handle; 52 conn->new(@{pop @newcons})->handle;
42 }; 53 };
43 slog 1, "$@" if $@ && !ref $@; 54 slog 1, "$@" if $@ && !ref $@;
44 $connections->up; 55 $connections->up;
45 } else { 56 } else {
46 last if @pool >= $MAX_POOL; 57 last if @pool >= $MAX_POOL;
… …
48 schedule; 59 schedule;
49 } 60 }
50 } 61 }
51} 62}
52 63
64sub listen_on {
65 my $listen = $_[0];
66
67 push @listen_sockets, $listen;
68
69 # the "main thread"
70 async {
71 slog 1, "accepting connections";
72 while () {
73 $connections->down;
74 push @newcons, [$listen->accept];
75 #slog 3, "accepted @$connections ".scalar(@pool);
76 if (@pool) {
77 (pop @pool)->ready;
78 } else {
79 async \&handler;
80 }
81
82 }
83 };
84}
85
53my $http_port = new Coro::Socket 86my $http_port = new Coro::Socket
54 LocalAddr => $SERVER_HOST, 87 LocalAddr => $SERVER_HOST,
55 LocalPort => $SERVER_PORT, 88 LocalPort => $SERVER_PORT,
56 ReuseAddr => 1, 89 ReuseAddr => 1,
57 Listen => 50, 90 Listen => 50,
58 or die "unable to start server"; 91 or die "unable to start server";
59 92
60push @listen_sockets, $http_port; 93listen_on $http_port;
61 94
62# the "main thread" 95if ($SERVER_PORT2) {
63async { 96 my $http_port = new Coro::Socket
64 slog 1, "accepting connections"; 97 LocalAddr => $SERVER_HOST,
65 while () { 98 LocalPort => $SERVER_PORT2,
66 $connections->down; 99 ReuseAddr => 1,
67 push @newcons, [$http_port->accept]; 100 Listen => 50,
68 #slog 3, "accepted @$connections ".scalar(@pool); 101 or die "unable to start server";
102
103 listen_on $http_port;
104}
105
106our $NOW;
107our $HTTP_NOW;
108
109Event->timer(interval => 1, hard => 1, cb => sub {
69 $::NOW = time; 110 $NOW = time;
70 if (@pool) { 111 $HTTP_NOW = time2str $NOW;
71 (pop @pool)->ready; 112})->now;
72 } else {
73 async \&handler;
74 }
75
76 }
77};
78 113
79package conn; 114package conn;
80 115
81use Socket; 116use Socket;
82use HTTP::Date; 117use HTTP::Date;
83use Convert::Scalar 'weaken'; 118use Convert::Scalar 'weaken';
84use Linux::AIO; 119use Linux::AIO;
85 120
86Linux::AIO::min_parallel $::AIO_PARALLEL; 121Linux::AIO::min_parallel $::AIO_PARALLEL;
87
88my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
89 122
90Event->io(fd => Linux::AIO::poll_fileno, 123Event->io(fd => Linux::AIO::poll_fileno,
91 poll => 'r', async => 1, 124 poll => 'r', async => 1,
92 cb => \&Linux::AIO::poll_cb); 125 cb => \&Linux::AIO::poll_cb);
93 126
… …
111 144
112read_mimetypes; 145read_mimetypes;
113 146
114sub new { 147sub new {
115 my $class = shift; 148 my $class = shift;
149 my $fh = shift;
116 my $peername = shift; 150 my $peername = shift;
117 my $fh = shift;
118 my $self = bless { fh => $fh }, $class; 151 my $self = bless { fh => $fh }, $class;
119 my (undef, $iaddr) = unpack_sockaddr_in $peername 152 my (undef, $iaddr) = unpack_sockaddr_in $peername
120 or $self->err(500, "unable to decode peername"); 153 or $self->err(500, "unable to decode peername");
121 154
122 $self->{remote_addr} = inet_ntoa $iaddr; 155 $self->{remote_addr} = inet_ntoa $iaddr;
123 $self->{time} = $::NOW; 156 $self->{time} = $::NOW;
124 157
125 # enter ourselves into various lists 158 weaken ($Coro::current->{conn} = $self);
126 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
127 159
128 $::conns++; 160 $::conns++;
129 161
130 $self; 162 $self;
131} 163}
132 164
133sub DESTROY { 165sub DESTROY {
134 my $self = shift; 166 my $self = shift;
135
136 $::conns--; 167 $::conns--;
137
138 $self->eoconn; 168 $self->eoconn;
139 delete $conn{$self->{remote_addr}}{$self*1};
140} 169}
141 170
142# end of connection 171# end of connection
143sub eoconn { 172sub eoconn {
144 my $self = shift; 173 my $self = shift;
174
175 # clean up hints
176 delete $conn{$self->{remote_id}}{$self*1};
145 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 177 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
178
179 $httpevent->broadcast;
146} 180}
147 181
148sub slog { 182sub slog {
149 my $self = shift; 183 my $self = shift;
150 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); 184 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
… …
152 186
153sub response { 187sub response {
154 my ($self, $code, $msg, $hdr, $content) = @_; 188 my ($self, $code, $msg, $hdr, $content) = @_;
155 my $res = "HTTP/1.1 $code $msg\015\012"; 189 my $res = "HTTP/1.1 $code $msg\015\012";
156 190
157 $self->{h}{connection} ||= $hdr->{Connection}; 191 if (exists $hdr->{Connection}) {
192 if ($hdr->{Connection} =~ /close/) {
193 $self->{h}{connection} = "close"
194 }
195 } else {
196 if ($self->{version} < 1.1) {
197 if ($self->{h}{connection} =~ /keep-alive/i) {
198 $hdr->{Connection} = "Keep-Alive";
199 } else {
200 $self->{h}{connection} = "close"
201 }
202 }
203 }
158 204
159 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 205 $res .= "Date: $HTTP_NOW\015\012";
160 206
161 while (my ($h, $v) = each %$hdr) { 207 while (my ($h, $v) = each %$hdr) {
162 $res .= "$h: $v\015\012" 208 $res .= "$h: $v\015\012"
163 } 209 }
164 $res .= "\015\012"; 210 $res .= "\015\012";
165 211
166 $res .= $content if defined $content and $self->{method} ne "HEAD"; 212 $res .= $content if defined $content and $self->{method} ne "HEAD";
167 213
214 my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $NOW).
168 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 215 " $self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
169 216
170 print $accesslog $log if $accesslog; 217 print $accesslog $log if $accesslog;
171 print STDERR $log; 218 print STDERR $log;
172 219
173 $self->{written} += 220 $self->{written} +=
… …
177sub err { 224sub err {
178 my $self = shift; 225 my $self = shift;
179 my ($code, $msg, $hdr, $content) = @_; 226 my ($code, $msg, $hdr, $content) = @_;
180 227
181 unless (defined $content) { 228 unless (defined $content) {
182 $content = "$code $msg"; 229 $content = "$code $msg\n";
183 $hdr->{"Content-Type"} = "text/plain"; 230 $hdr->{"Content-Type"} = "text/plain";
184 $hdr->{"Content-Length"} = length $content; 231 $hdr->{"Content-Length"} = length $content;
185 } 232 }
186 $hdr->{"Connection"} = "close"; 233 $hdr->{"Connection"} = "close";
187 234
188 $self->response($code, $msg, $hdr, $content); 235 $self->response($code, $msg, $hdr, $content);
189 236
190 die bless {}, err::; 237 die bless {}, err::;
191}
192
193sub err_blocked {
194 my $self = shift;
195 my $ip = $self->{remote_addr};
196 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
197
198 Coro::Event::do_timer(after => 20*rand);
199
200 $self->err(401, "too many connections",
201 {
202 "Content-Type" => "text/html",
203 "Retry-After" => $::BLOCKTIME,
204 "Warning" => "Please do NOT retry, you have been blocked",
205 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
206 "Connection" => "close",
207 },
208 <<EOF);
209<html>
210<head>
211<title>Too many connections</title>
212</head>
213<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000">
214
215<p>You have been blocked because you opened too many connections. You
216may retry at</p>
217
218 <p><blockquote>$time.</blockquote></p>
219
220<p>Until then, each new access will renew the block. You might want to have a
221look at the <a href="http://www.goof.com/pcg/marc/animefaq.html#connectionlimit">FAQ</a>.</p>
222
223</body></html>
224EOF
225} 238}
226 239
227sub handle { 240sub handle {
228 my $self = shift; 241 my $self = shift;
229 my $fh = $self->{fh}; 242 my $fh = $self->{fh};
… …
246 } 259 }
247 260
248 $self->{h} = {}; 261 $self->{h} = {};
249 262
250 $fh->timeout($::RES_TIMEOUT); 263 $fh->timeout($::RES_TIMEOUT);
251 my $ip = $self->{remote_addr};
252
253 if ($blocked{$ip}) {
254 $self->err_blocked($blocked{$ip})
255 if $blocked{$ip} > $::NOW;
256
257 delete $blocked{$ip};
258 }
259
260 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
261 $self->slog(2, "blocked ip $ip");
262 $self->err_blocked;
263 }
264 264
265 $req =~ /^(?:\015\012)? 265 $req =~ /^(?:\015\012)?
266 (GET|HEAD) \040+ 266 (GET|HEAD) \040+
267 ([^\040]+) \040+ 267 ([^\040]+) \040+
268 HTTP\/([0-9]+\.[0-9]+) 268 HTTP\/([0-9]+\.[0-9]+)
… …
293 293
294 $self->{h}{$h} = substr $v, 1 294 $self->{h}{$h} = substr $v, 1
295 while ($h, $v) = each %hdr; 295 while ($h, $v) = each %hdr;
296 } 296 }
297 297
298 # remote id should be unique per user
299 my $id = $self->{remote_addr};
300
301 if (exists $self->{h}{"client-ip"}) {
302 $id .= "[".$self->{h}{"client-ip"}."]";
303 } elsif (exists $self->{h}{"x-forwarded-for"}) {
304 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
305 }
306
307 $self->{remote_id} = $id;
308
309 if ($blocked{$id}) {
310 $self->err_blocked($blocked{$id})
311 if $blocked{$id} > $::NOW;
312
313 delete $blocked{$id};
314 }
315
316 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
317 my $delay = $::PER_TIMEOUT + $::NOW + 15;
318 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
319 if ($delay < $::NOW) {
320 $self->slog(2, "blocked ip $id");
321 $self->err_blocked;
322 } else {
323 $httpevent->wait;
324 }
325 }
326 }
327
298 # find out server name and port 328 # find out server name and port
299 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { 329 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
300 $host = $1; 330 $host = $1;
301 } else { 331 } else {
302 $host = $self->{h}{host}; 332 $host = $self->{h}{host};
… …
304 334
305 if (defined $host) { 335 if (defined $host) {
306 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80; 336 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
307 } else { 337 } else {
308 ($self->{server_port}, $host) 338 ($self->{server_port}, $host)
309 = unpack_sockaddr_in $self->{fh}->getsockname 339 = unpack_sockaddr_in $self->{fh}->sockname
310 or $self->err(500, "unable to get socket name"); 340 or $self->err(500, "unable to get socket name");
311 $host = inet_ntoa $host; 341 $host = inet_ntoa $host;
312 } 342 }
313 343
314 $self->{server_name} = $host; 344 $self->{server_name} = $host;
315 345
316 # remote id should be unique per user 346 # enter ourselves into various lists
317 $self->{remote_id} = $self->{remote_addr}; 347 weaken ($conn{$id}{$self*1} = $self);
318
319 if (exists $self->{h}{"client-ip"}) {
320 $self->{remote_id} .= "[".$self->{h}{"client-ip"}."]";
321 } elsif (exists $self->{h}{"x-forwarded-for"}) {
322 $self->{remote_id} .= "[".$self->{h}{"x-forwarded-for"}."]";
323 }
324
325 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 348 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
326 349
327 eval { 350 eval {
328 $self->map_uri; 351 $self->map_uri;
329 $self->respond; 352 $self->respond;
330 }; 353 };
331 354
332 $self->eoconn; 355 $self->eoconn;
333 356
334 die if $@ && !ref $@; 357 die if $@ && !ref $@;
335 358
336 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1; 359 last if $self->{h}{connection} =~ /close/;
360
361 $httpevent->broadcast;
337 362
338 $fh->timeout($::PER_TIMEOUT); 363 $fh->timeout($::PER_TIMEOUT);
339 } 364 }
340} 365}
341 366
… …
391 416
392sub respond { 417sub respond {
393 my $self = shift; 418 my $self = shift;
394 my $path = $self->{path}; 419 my $path = $self->{path};
395 420
396 stat $path 421 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
397 or $self->err(404, "not found"); 422 if ($::internal{$1}) {
398 423 $::internal{$1}->($self);
399 $self->{stat} = [stat _];
400
401 # idiotic netscape sends idiotic headers AGAIN
402 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
403 ? str2time $1 : 0;
404
405 if (-d _ && -r _) {
406 # directory
407 if ($path !~ /\/$/) {
408 # create a redirect to get the trailing "/"
409 # we don't try to avoid the :80
410 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
411 } else { 424 } else {
412 $ims < $self->{stat}[9] 425 $self->err(404, "not found");
426 }
427 } else {
428
429 stat $path
413 or $self->err(304, "not modified"); 430 or $self->err(404, "not found");
414 431
415 if (-r "$path/index.html") { 432 $self->{stat} = [stat _];
416 $self->{path} .= "/index.html"; 433
417 $self->handle_file; 434 # idiotic netscape sends idiotic headers AGAIN
435 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
436 ? str2time $1 : 0;
437
438 if (-d _ && -r _) {
439 # directory
440 if ($path !~ /\/$/) {
441 # create a redirect to get the trailing "/"
442 # we don't try to avoid the :80
443 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
418 } else { 444 } else {
445 $ims < $self->{stat}[9]
446 or $self->err(304, "not modified");
447
448 if (-r "$path/index.html") {
449 # replace directory "size" by index.html filesize
450 $self->{stat}[7] = (stat ($self->{path} .= "/index.html"))[7];
451 $self->handle_file;
452 } else {
419 $self->handle_dir; 453 $self->handle_dir;
420 } 454 }
421 } 455 }
422 } elsif (-f _ && -r _) { 456 } elsif (-f _ && -r _) {
423 -x _ and $self->err(403, "forbidden"); 457 -x _ and $self->err(403, "forbidden");
424 $self->handle_file; 458 $self->handle_file;
425 } else { 459 } else {
426 $self->err(404, "not found"); 460 $self->err(404, "not found");
461 }
427 } 462 }
428} 463}
429 464
430sub handle_dir { 465sub handle_dir {
431 my $self = shift; 466 my $self = shift;
… …
433 468
434 $self->response(200, "ok", 469 $self->response(200, "ok",
435 { 470 {
436 "Content-Type" => "text/html", 471 "Content-Type" => "text/html",
437 "Content-Length" => length $idx, 472 "Content-Length" => length $idx,
473 "Last-Modified" => time2str ((stat _)[9]),
438 }, 474 },
439 $idx); 475 $idx);
440} 476}
441 477
442sub handle_file { 478sub handle_file {
443 my $self = shift; 479 my $self = shift;
444 my $length = -s _; 480 my $length = $self->{stat}[7];
481 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
445 my $hdr = { 482 my $hdr = {
446 "Last-Modified" => time2str ((stat _)[9]), 483 "Last-Modified" => time2str ((stat _)[9]),
447 }; 484 };
448 485
449 my @code = (200, "ok"); 486 my @code = (200, "ok");
… …
461 } 498 }
462 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; 499 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
463 } 500 }
464 $hdr->{"Content-Range"} = "bytes */$length"; 501 $hdr->{"Content-Range"} = "bytes */$length";
465 $hdr->{"Content-Length"} = $length; 502 $hdr->{"Content-Length"} = $length;
466 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
467 $self->err(416, "not satisfiable", $hdr, ""); 503 $self->err(416, "not satisfiable", $hdr, "");
468 504
469satisfiable: 505satisfiable:
470 # check for segmented downloads 506 # check for segmented downloads
471 if ($l && $::NO_SEGMENTED) { 507 if ($l && $::NO_SEGMENTED) {
472 my $delay = 60; 508 my $delay = $::NOW + $::PER_TIMEOUT + 15;
473 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 509 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
474 if ($delay <= 0) { 510 if ($delay <= $::NOW) {
475 $self->err(400, "segmented downloads are not allowed", 511 $self->err_segmented_download;
476 { "Content-Type" => "text/html", Connection => "close" }, <<EOF);
477<html>
478<head>
479<title>Segmented downloads are not allowed</title>
480</head>
481<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000">
482
483<p>Segmented downloads are not allowed on this server. Please refer to the
484<a href="http://www.goof.com/pcg/marc/animefaq.html#segmented_downloads">FAQ</a>.</p>
485
486</body></html>
487EOF
488 } else { 512 } else {
489 Coro::Event::do_timer(after => 3); $delay -= 3; 513 $httpevent->wait;
490 } 514 }
491 } 515 }
492 } 516 }
493 517
494 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 518 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
… …
505 $hdr->{"Content-Length"} = $length; 529 $hdr->{"Content-Length"} = $length;
506 530
507 $self->response(@code, $hdr, ""); 531 $self->response(@code, $hdr, "");
508 532
509 if ($self->{method} eq "GET") { 533 if ($self->{method} eq "GET") {
534 $self->{time} = $::NOW;
535
536 my $current = $Coro::current;
537
510 my ($fh, $buf, $r); 538 my ($fh, $buf, $r);
511 my $current = $Coro::current; 539
512 open $fh, "<", $self->{path} 540 open $fh, "<", $self->{path}
513 or die "$self->{path}: late open failure ($!)"; 541 or die "$self->{path}: late open failure ($!)";
514 542
515 $h -= $l - 1; 543 $h -= $l - 1;
516 544
517 if (0) { 545 if (0) { # !AIO
518 if ($l) { 546 if ($l) {
519 sysseek $fh, $l, 0; 547 sysseek $fh, $l, 0;
520 } 548 }
521 } 549 }
550
551 my $transfer; # transfer guard
552 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
553
554 $self->{time} = $::NOW;
522 555
523 while ($h > 0) { 556 while ($h > 0) {
557 unless ($transfer) {
558 if ($transfer ||= $queue->timed_guard($::WAIT_INTERVAL)) {
559 $bufsize = $::BUFSIZE;
560 $self->{time} = $::NOW;
561 }
562 }
563
524 if (0) { 564 if (0) { # !AIO
525 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 565 sysread $fh, $buf, $h > $bufsize ? $bufsize : $h
526 or last; 566 or last;
527 } else { 567 } else {
528 undef $buf; 568 aio_read($fh, $l, ($h > $bufsize ? $bufsize : $h),
529 $aio_requests->down;
530 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
531 $buf, 0, sub { 569 $buf, 0, sub {
532 $r = $_[0]; 570 $r = $_[0];
533 $current->ready; 571 Coro::ready($current);
534 }); 572 });
535 &Coro::schedule; 573 &Coro::schedule;
536 $aio_requests->up;
537 last unless $r; 574 last unless $r;
538 } 575 }
539 my $w = $self->{fh}->syswrite($buf) 576 my $w = syswrite $self->{fh}, $buf
540 or last; 577 or last;
541 $::written += $w; 578 $::written += $w;
542 $self->{written} += $w; 579 $self->{written} += $w;
543 $l += $r; 580 $l += $r;
544 } 581 }
545 }
546 582
547 close $fh; 583 close $fh;
584 }
548} 585}
549 586
5501; 5871;

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