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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.26 by root, Sun Aug 19 22:59:35 2001 UTC vs.
Revision 1.36 by root, Sun Sep 2 00:54:00 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 }
… …
73use HTTP::Date; 98use HTTP::Date;
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;
103
104my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
78 105
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
… …
109 or $self->err(500, "unable to decode peername"); 136 or $self->err(500, "unable to decode peername");
110 137
111 $self->{remote_addr} = inet_ntoa $iaddr; 138 $self->{remote_addr} = inet_ntoa $iaddr;
112 $self->{time} = $::NOW; 139 $self->{time} = $::NOW;
113 140
114 # enter ourselves into various lists
115 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
116
117 $::conns++; 141 $::conns++;
118 142
119 $self; 143 $self;
120} 144}
121 145
… …
123 my $self = shift; 147 my $self = shift;
124 148
125 $::conns--; 149 $::conns--;
126 150
127 $self->eoconn; 151 $self->eoconn;
128 delete $conn{$self->{remote_addr}}{$self*1};
129} 152}
130 153
131# end of connection 154# end of connection
132sub eoconn { 155sub eoconn {
133 my $self = shift; 156 my $self = shift;
157
158 # clean up hints
159 delete $conn{$self->{remote_id}}{$self*1};
134 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 160 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
135} 161}
136 162
137sub slog { 163sub slog {
138 my $self = shift; 164 my $self = shift;
139 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 165 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
140} 166}
141 167
142sub response { 168sub response {
143 my ($self, $code, $msg, $hdr, $content) = @_; 169 my ($self, $code, $msg, $hdr, $content) = @_;
144 my $res = "HTTP/1.1 $code $msg\015\012"; 170 my $res = "HTTP/1.1 $code $msg\015\012";
145 171
146 #$res .= "Connection: close\015\012"; 172 $self->{h}{connection} ||= $hdr->{Connection};
147 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 173
174 $res .= "Date: $HTTP_NOW\015\012";
148 175
149 while (my ($h, $v) = each %$hdr) { 176 while (my ($h, $v) = each %$hdr) {
150 $res .= "$h: $v\015\012" 177 $res .= "$h: $v\015\012"
151 } 178 }
152 $res .= "\015\012"; 179 $res .= "\015\012";
153 180
154 $res .= $content if defined $content and $self->{method} ne "HEAD"; 181 $res .= $content if defined $content and $self->{method} ne "HEAD";
155 182
156 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 183 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
184
185 print $accesslog $log if $accesslog;
186 print STDERR $log;
157 187
158 $self->{written} += 188 $self->{written} +=
159 print {$self->{fh}} $res; 189 print {$self->{fh}} $res;
160} 190}
161 191
162sub err { 192sub err {
163 my $self = shift; 193 my $self = shift;
164 my ($code, $msg, $hdr, $content) = @_; 194 my ($code, $msg, $hdr, $content) = @_;
165 195
166 unless (defined $content) { 196 unless (defined $content) {
167 $content = "$code $msg"; 197 $content = "$code $msg\n";
168 $hdr->{"Content-Type"} = "text/plain"; 198 $hdr->{"Content-Type"} = "text/plain";
169 $hdr->{"Content-Length"} = length $content; 199 $hdr->{"Content-Length"} = length $content;
170 } 200 }
171 $hdr->{"Connection"} = "close"; 201 $hdr->{"Connection"} = "close";
172 202
173 $self->response($code, $msg, $hdr, $content); 203 $self->response($code, $msg, $hdr, $content);
174 204
175 die bless {}, err::; 205 die bless {}, err::;
176} 206}
177 207
178sub err_blocked {
179 my $self = shift;
180 my $ip = $self->{remote_addr};
181 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
182
183 Coro::Event::do_timer(after => 20*rand);
184
185 $self->err(401, "too many connections",
186 {
187 "Content-Type" => "text/html",
188 "Retry-After" => $::BLOCKTIME,
189 "Warning" => "Please do NOT retry, you have been blocked",
190 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
191 },
192 <<EOF);
193<html><p>
194You have been blocked because you opened too many connections. You
195may retry at</p>
196
197 <p><blockquote>$time.</blockquote></p>
198
199<p>Until then, each new access will renew the block. You might want to have a
200look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
201</html>
202EOF
203}
204
205sub handle { 208sub handle {
206 my $self = shift; 209 my $self = shift;
207 my $fh = $self->{fh}; 210 my $fh = $self->{fh};
211
212 my $host;
208 213
209 $fh->timeout($::REQ_TIMEOUT); 214 $fh->timeout($::REQ_TIMEOUT);
210 while() { 215 while() {
211 $self->{reqs}++; 216 $self->{reqs}++;
212 217
… …
222 } 227 }
223 228
224 $self->{h} = {}; 229 $self->{h} = {};
225 230
226 $fh->timeout($::RES_TIMEOUT); 231 $fh->timeout($::RES_TIMEOUT);
227 my $ip = $self->{remote_addr};
228
229 if ($blocked{$ip}) {
230 $self->err_blocked($blocked{$ip})
231 if $blocked{$ip} > $::NOW;
232
233 delete $blocked{$ip};
234 }
235
236 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
237 $self->slog(2, "blocked ip $ip");
238 $self->err_blocked;
239 }
240 232
241 $req =~ /^(?:\015\012)? 233 $req =~ /^(?:\015\012)?
242 (GET|HEAD) \040+ 234 (GET|HEAD) \040+
243 ([^\040]+) \040+ 235 ([^\040]+) \040+
244 HTTP\/([0-9]+\.[0-9]+) 236 HTTP\/([0-9]+\.[0-9]+)
… …
269 261
270 $self->{h}{$h} = substr $v, 1 262 $self->{h}{$h} = substr $v, 1
271 while ($h, $v) = each %hdr; 263 while ($h, $v) = each %hdr;
272 } 264 }
273 265
266 # remote id should be unique per user
267 my $id = $self->{remote_addr};
268
269 if (exists $self->{h}{"client-ip"}) {
270 $id .= "[".$self->{h}{"client-ip"}."]";
271 } elsif (exists $self->{h}{"x-forwarded-for"}) {
272 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
273 }
274
275 $self->{remote_id} = $id;
276
277 if ($blocked{$id}) {
278 $self->err_blocked($blocked{$id})
279 if $blocked{$id} > $::NOW;
280
281 delete $blocked{$id};
282 }
283
284 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
285 my $delay = $::PER_TIMEOUT + 15;
286 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
287 if ($delay <= 0) {
288 $self->slog(2, "blocked ip $id");
289 $self->err_blocked;
290 } else {
291 Coro::Event::do_timer(after => 4); $delay -= 4;
292 }
293 }
294 }
295
296 # find out server name and port
297 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
298 $host = $1;
299 } else {
300 $host = $self->{h}{host};
301 }
302
303 if (defined $host) {
274 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 304 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
305 } else {
306 ($self->{server_port}, $host)
307 = unpack_sockaddr_in $self->{fh}->getsockname
308 or $self->err(500, "unable to get socket name");
309 $host = inet_ntoa $host;
310 }
275 311
312 $self->{server_name} = $host;
313
314 # enter ourselves into various lists
315 weaken ($conn{$id}{$self*1} = $self);
276 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 316 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
277 317
278 eval { 318 eval {
279 $self->map_uri; 319 $self->map_uri;
280 $self->respond; 320 $self->respond;
281 }; 321 };
282 322
283 $self->eoconn; 323 $self->eoconn;
284 324
285 die if $@ && !ref $@; 325 die if $@ && !ref $@;
286 326
287 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 327 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
288 328
289 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
290 $fh->timeout($::PER_TIMEOUT); 329 $fh->timeout($::PER_TIMEOUT);
291 } 330 }
292} 331}
293 332
294# uri => path mapping 333# uri => path mapping
295sub map_uri { 334sub map_uri {
296 my $self = shift; 335 my $self = shift;
297 my $host = $self->{h}{host} || "default"; 336 my $host = $self->{server_name};
298 my $uri = $self->{uri}; 337 my $uri = $self->{uri};
299 338
300 # some massaging, also makes it more secure 339 # some massaging, also makes it more secure
301 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 340 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
302 $uri =~ s%//+%/%g; 341 $uri =~ s%//+%/%g;
… …
312 $self->{path} = "$::DOCROOT/$host$uri"; 351 $self->{path} = "$::DOCROOT/$host$uri";
313 352
314 $self->access_check; 353 $self->access_check;
315} 354}
316 355
317sub server_address {
318 my $self = shift;
319 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
320 or $self->err(500, "unable to get socket name");
321 ((inet_ntoa $iaddr), $port);
322}
323
324sub server_host {
325 my $self = shift;
326 if (exists $self->{h}{host}) {
327 return $self->{h}{host};
328 } else {
329 return (($self->server_address)[0]);
330 }
331}
332
333sub server_hostport {
334 my $self = shift;
335 my ($host, $port);
336 if (exists $self->{h}{host}) {
337 ($host, $port) = ($self->{h}{host}, $self->{server_port});
338 } else {
339 ($host, $port) = $self->server_address;
340 }
341 $port = $port == 80 ? "" : ":$port";
342 $host.$port;
343}
344
345sub _cgi { 356sub _cgi {
346 my $self = shift; 357 my $self = shift;
347 my $path = shift; 358 my $path = shift;
348 my $fh; 359 my $fh;
349 360
350 # no two-way xxx supported 361 # no two-way xxx supported
351 if (0 == fork) { 362 if (0 == fork) {
352 open STDOUT, ">&".fileno($self->{fh}); 363 open STDOUT, ">&".fileno($self->{fh});
353 if (chdir $::DOCROOT) { 364 if (chdir $::DOCROOT) {
354 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 365 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
355 $ENV{HTTP_HOST} = $self->server_host; 366 $ENV{HTTP_HOST} = $self->{server_name};
356 $ENV{HTTP_PORT} = $self->{server_host}; 367 $ENV{HTTP_PORT} = $self->{server_port};
357 $ENV{SCRIPT_NAME} = $self->{name}; 368 $ENV{SCRIPT_NAME} = $self->{name};
358 exec $path; 369 exec $path;
359 } 370 }
360 Coro::State::_exit(0); 371 Coro::State::_exit(0);
361 } else { 372 } else {
373 die;
362 } 374 }
375}
376
377sub server_hostport {
378 $_[0]{server_port} == 80
379 ? $_[0]{server_name}
380 : "$_[0]{server_name}:$_[0]{server_port}";
363} 381}
364 382
365sub respond { 383sub respond {
366 my $self = shift; 384 my $self = shift;
367 my $path = $self->{path}; 385 my $path = $self->{path};
… …
377 395
378 if (-d _ && -r _) { 396 if (-d _ && -r _) {
379 # directory 397 # directory
380 if ($path !~ /\/$/) { 398 if ($path !~ /\/$/) {
381 # create a redirect to get the trailing "/" 399 # create a redirect to get the trailing "/"
382 my $host = $self->server_hostport; 400 # we don't try to avoid the :80
383 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 401 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
384 } else { 402 } else {
385 $ims < $self->{stat}[9] 403 $ims < $self->{stat}[9]
386 or $self->err(304, "not modified"); 404 or $self->err(304, "not modified");
387 405
388 if (-r "$path/index.html") { 406 if (-r "$path/index.html") {
… …
412 $idx); 430 $idx);
413} 431}
414 432
415sub handle_file { 433sub handle_file {
416 my $self = shift; 434 my $self = shift;
417 my $length = -s _; 435 my $length = $self->{stat}[7];
436 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
418 my $hdr = { 437 my $hdr = {
419 "Last-Modified" => time2str ((stat _)[9]), 438 "Last-Modified" => time2str ((stat _)[9]),
420 }; 439 };
421 440
422 my @code = (200, "ok"); 441 my @code = (200, "ok");
… …
434 } 453 }
435 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; 454 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
436 } 455 }
437 $hdr->{"Content-Range"} = "bytes */$length"; 456 $hdr->{"Content-Range"} = "bytes */$length";
438 $hdr->{"Content-Length"} = $length; 457 $hdr->{"Content-Length"} = $length;
439 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
440 $self->err(416, "not satisfiable", $hdr, ""); 458 $self->err(416, "not satisfiable", $hdr, "");
441 459
442satisfiable: 460satisfiable:
443 # check for segmented downloads 461 # check for segmented downloads
444 if ($l && $::NO_SEGMENTED) { 462 if ($l && $::NO_SEGMENTED) {
463 my $delay = $::PER_TIMEOUT + 15;
445 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 464 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
446 $self->err(400, "segmented downloads are not allowed"); 465 if ($delay <= 0) {
466 $self->err_segmented_download;
467 } else {
468 Coro::Event::do_timer(after => 4); $delay -= 4;
469 }
447 } 470 }
448 } 471 }
449 472
450 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 473 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
451 @code = (206, "partial content"); 474 @code = (206, "partial content");
… …
461 $hdr->{"Content-Length"} = $length; 484 $hdr->{"Content-Length"} = $length;
462 485
463 $self->response(@code, $hdr, ""); 486 $self->response(@code, $hdr, "");
464 487
465 if ($self->{method} eq "GET") { 488 if ($self->{method} eq "GET") {
489 $self->{time} = $::NOW;
490
491 my $fudge = $queue->[0]->waiters;
492 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
493
494 $queue->[1] *= $fudge;
495 my $transfer = $queue->[0]->guard;
496
497 if ($fudge != 1) {
498 $queue->[1] /= $fudge;
499 $queue->[1] = $queue->[1] * $::wait_factor
500 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
501 }
502 $self->{time} = $::NOW;
503
504 $self->{fh}->writable or return;
505
466 my ($fh, $buf, $r); 506 my ($fh, $buf, $r);
467 my $current = $Coro::current; 507 my $current = $Coro::current;
468 open $fh, "<", $self->{path} 508 open $fh, "<", $self->{path}
469 or die "$self->{path}: late open failure ($!)"; 509 or die "$self->{path}: late open failure ($!)";
470 510
… …
479 while ($h > 0) { 519 while ($h > 0) {
480 if (0) { 520 if (0) {
481 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 521 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
482 or last; 522 or last;
483 } else { 523 } else {
524 undef $buf;
525 $aio_requests->down;
484 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 526 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
485 $buf, 0, sub { 527 $buf, 0, sub {
486 $r = $_[0]; 528 $r = $_[0];
487 $current->ready; 529 $current->ready;
488 }); 530 });
489 &Coro::schedule; 531 &Coro::schedule;
532 $aio_requests->up;
490 last unless $r; 533 last unless $r;
491 } 534 }
492 my $w = $self->{fh}->syswrite($buf) 535 my $w = $self->{fh}->syswrite($buf)
493 or last; 536 or last;
494 $::written += $w; 537 $::written += $w;
495 $self->{written} += $w; 538 $self->{written} += $w;
496 $l += $r; 539 $l += $r;
497 } 540 }
498 }
499 541
500 close $fh; 542 close $fh;
543 }
501} 544}
502 545
5031; 5461;

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