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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.21 by root, Fri Aug 17 03:33:00 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 }
… …
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;
78 103
104my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
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);
82my $scheduler = Event->idle(
83 max => 0, min => 0, prio => 6, parked => 1,
84 cb => \&Coro::schedule);
85 109
86our %conn; # $conn{ip}{fh} => connobj 110our %conn; # $conn{ip}{self} => connobj
111our %uri; # $uri{ip}{uri}{self}
87our %blocked; 112our %blocked;
88our %mimetype; 113our %mimetype;
89 114
90sub read_mimetypes { 115sub read_mimetypes {
91 local *M; 116 local *M;
… …
111 or $self->err(500, "unable to decode peername"); 136 or $self->err(500, "unable to decode peername");
112 137
113 $self->{remote_addr} = inet_ntoa $iaddr; 138 $self->{remote_addr} = inet_ntoa $iaddr;
114 $self->{time} = $::NOW; 139 $self->{time} = $::NOW;
115 140
116 # enter ourselves into various lists
117 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
118
119 $::conns++; 141 $::conns++;
120 142
121 $self; 143 $self;
122} 144}
123 145
… …
125 my $self = shift; 147 my $self = shift;
126 148
127 $::conns--; 149 $::conns--;
128 150
129 $self->eoconn; 151 $self->eoconn;
130 delete $conn{$self->{remote_addr}}{$self*1};
131} 152}
132 153
133# end of connection 154# end of connection
134sub eoconn { 155sub eoconn {
156 my $self = shift;
157
158 # clean up hints
159 delete $conn{$self->{remote_id}}{$self*1};
135 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 160 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
136} 161}
137 162
138sub slog { 163sub slog {
139 my $self = shift; 164 my $self = shift;
140 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 165 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
141} 166}
142 167
143sub response { 168sub response {
144 my ($self, $code, $msg, $hdr, $content) = @_; 169 my ($self, $code, $msg, $hdr, $content) = @_;
145 my $res = "HTTP/1.1 $code $msg\015\012"; 170 my $res = "HTTP/1.1 $code $msg\015\012";
146 171
147 #$res .= "Connection: close\015\012"; 172 $self->{h}{connection} ||= $hdr->{Connection};
148 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 173
174 $res .= "Date: $HTTP_NOW\015\012";
149 175
150 while (my ($h, $v) = each %$hdr) { 176 while (my ($h, $v) = each %$hdr) {
151 $res .= "$h: $v\015\012" 177 $res .= "$h: $v\015\012"
152 } 178 }
153 $res .= "\015\012"; 179 $res .= "\015\012";
154 180
155 $res .= $content if defined $content and $self->{method} ne "HEAD"; 181 $res .= $content if defined $content and $self->{method} ne "HEAD";
156 182
157 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# 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;
158 187
159 $self->{written} += 188 $self->{written} +=
160 print {$self->{fh}} $res; 189 print {$self->{fh}} $res;
161} 190}
162 191
163sub err { 192sub err {
164 my $self = shift; 193 my $self = shift;
165 my ($code, $msg, $hdr, $content) = @_; 194 my ($code, $msg, $hdr, $content) = @_;
166 195
167 unless (defined $content) { 196 unless (defined $content) {
168 $content = "$code $msg"; 197 $content = "$code $msg\n";
169 $hdr->{"Content-Type"} = "text/plain"; 198 $hdr->{"Content-Type"} = "text/plain";
170 $hdr->{"Content-Length"} = length $content; 199 $hdr->{"Content-Length"} = length $content;
171 } 200 }
172 $hdr->{"Connection"} = "close"; 201 $hdr->{"Connection"} = "close";
173 202
174 $self->response($code, $msg, $hdr, $content); 203 $self->response($code, $msg, $hdr, $content);
175 204
176 die bless {}, err::; 205 die bless {}, err::;
177} 206}
178 207
179sub err_blocked {
180 my $self = shift;
181 my $ip = $self->{remote_addr};
182 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
183
184 Coro::Event::do_timer(after => 20*rand);
185
186 $self->err(401, "too many connections",
187 {
188 "Content-Type" => "text/html",
189 "Retry-After" => $::BLOCKTIME,
190 "Warning" => "Please do NOT retry, you have been blocked",
191 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
192 },
193 <<EOF);
194<html><p>
195You have been blocked because you opened too many connections. You
196may retry at</p>
197
198 <p><blockquote>$time.</blockquote></p>
199
200<p>Until then, each new access will renew the block. You might want to have a
201look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
202</html>
203EOF
204}
205
206sub handle { 208sub handle {
207 my $self = shift; 209 my $self = shift;
208 my $fh = $self->{fh}; 210 my $fh = $self->{fh};
211
212 my $host;
209 213
210 $fh->timeout($::REQ_TIMEOUT); 214 $fh->timeout($::REQ_TIMEOUT);
211 while() { 215 while() {
212 $self->{reqs}++; 216 $self->{reqs}++;
213 217
… …
223 } 227 }
224 228
225 $self->{h} = {}; 229 $self->{h} = {};
226 230
227 $fh->timeout($::RES_TIMEOUT); 231 $fh->timeout($::RES_TIMEOUT);
228 my $ip = $self->{remote_addr};
229
230 if ($blocked{$ip}) {
231 $self->err_blocked($blocked{$ip})
232 if $blocked{$ip} > $::NOW;
233
234 delete $blocked{$ip};
235 }
236
237 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
238 $self->slog(2, "blocked ip $ip");
239 $self->err_blocked;
240 }
241 232
242 $req =~ /^(?:\015\012)? 233 $req =~ /^(?:\015\012)?
243 (GET|HEAD) \040+ 234 (GET|HEAD) \040+
244 ([^\040]+) \040+ 235 ([^\040]+) \040+
245 HTTP\/([0-9]+\.[0-9]+) 236 HTTP\/([0-9]+\.[0-9]+)
… …
270 261
271 $self->{h}{$h} = substr $v, 1 262 $self->{h}{$h} = substr $v, 1
272 while ($h, $v) = each %hdr; 263 while ($h, $v) = each %hdr;
273 } 264 }
274 265
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) {
275 $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 }
276 311
312 $self->{server_name} = $host;
313
314 # enter ourselves into various lists
315 weaken ($conn{$id}{$self*1} = $self);
277 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 316 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
278 317
318 eval {
279 $self->map_uri; 319 $self->map_uri;
280 $self->respond; 320 $self->respond;
321 };
281 322
282 $self->eoconn; 323 $self->eoconn;
283 324
325 die if $@ && !ref $@;
326
284 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 327 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
285 328
286 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
287 $fh->timeout($::PER_TIMEOUT); 329 $fh->timeout($::PER_TIMEOUT);
288 } 330 }
289} 331}
290 332
291# uri => path mapping 333# uri => path mapping
292sub map_uri { 334sub map_uri {
293 my $self = shift; 335 my $self = shift;
294 my $host = $self->{h}{host} || "default"; 336 my $host = $self->{server_name};
295 my $uri = $self->{uri}; 337 my $uri = $self->{uri};
296 338
297 # some massaging, also makes it more secure 339 # some massaging, also makes it more secure
298 $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;
299 $uri =~ s%//+%/%g; 341 $uri =~ s%//+%/%g;
… …
309 $self->{path} = "$::DOCROOT/$host$uri"; 351 $self->{path} = "$::DOCROOT/$host$uri";
310 352
311 $self->access_check; 353 $self->access_check;
312} 354}
313 355
314sub server_address {
315 my $self = shift;
316 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
317 or $self->err(500, "unable to get socket name");
318 ((inet_ntoa $iaddr), $port);
319}
320
321sub server_host {
322 my $self = shift;
323 if (exists $self->{h}{host}) {
324 return $self->{h}{host};
325 } else {
326 return (($self->server_address)[0]);
327 }
328}
329
330sub server_hostport {
331 my $self = shift;
332 my ($host, $port);
333 if (exists $self->{h}{host}) {
334 ($host, $port) = ($self->{h}{host}, $self->{server_port});
335 } else {
336 ($host, $port) = $self->server_address;
337 }
338 $port = $port == 80 ? "" : ":$port";
339 $host.$port;
340}
341
342sub _cgi { 356sub _cgi {
343 my $self = shift; 357 my $self = shift;
344 my $path = shift; 358 my $path = shift;
345 my $fh; 359 my $fh;
346 360
347 # no two-way xxx supported 361 # no two-way xxx supported
348 if (0 == fork) { 362 if (0 == fork) {
349 open STDOUT, ">&".fileno($self->{fh}); 363 open STDOUT, ">&".fileno($self->{fh});
350 if (chdir $::DOCROOT) { 364 if (chdir $::DOCROOT) {
351 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 365 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
352 $ENV{HTTP_HOST} = $self->server_host; 366 $ENV{HTTP_HOST} = $self->{server_name};
353 $ENV{HTTP_PORT} = $self->{server_host}; 367 $ENV{HTTP_PORT} = $self->{server_port};
354 $ENV{SCRIPT_NAME} = $self->{name}; 368 $ENV{SCRIPT_NAME} = $self->{name};
355 exec $path; 369 exec $path;
356 } 370 }
357 Coro::State::_exit(0); 371 Coro::State::_exit(0);
358 } else { 372 } else {
373 die;
359 } 374 }
375}
376
377sub server_hostport {
378 $_[0]{server_port} == 80
379 ? $_[0]{server_name}
380 : "$_[0]{server_name}:$_[0]{server_port}";
360} 381}
361 382
362sub respond { 383sub respond {
363 my $self = shift; 384 my $self = shift;
364 my $path = $self->{path}; 385 my $path = $self->{path};
… …
374 395
375 if (-d _ && -r _) { 396 if (-d _ && -r _) {
376 # directory 397 # directory
377 if ($path !~ /\/$/) { 398 if ($path !~ /\/$/) {
378 # create a redirect to get the trailing "/" 399 # create a redirect to get the trailing "/"
379 my $host = $self->server_hostport; 400 # we don't try to avoid the :80
380 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 401 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
381 } else { 402 } else {
382 $ims < $self->{stat}[9] 403 $ims < $self->{stat}[9]
383 or $self->err(304, "not modified"); 404 or $self->err(304, "not modified");
384 405
385 if ($self->{method} eq "GET") {
386 if (-r "$path/index.html") { 406 if (-r "$path/index.html") {
387 $self->{path} .= "/index.html"; 407 $self->{path} .= "/index.html";
388 $self->handle_file; 408 $self->handle_file;
389 } else { 409 } else {
390 $self->handle_dir; 410 $self->handle_dir;
391 }
392 } 411 }
393 } 412 }
394 } elsif (-f _ && -r _) { 413 } elsif (-f _ && -r _) {
395 -x _ and $self->err(403, "forbidden"); 414 -x _ and $self->err(403, "forbidden");
396 $self->handle_file; 415 $self->handle_file;
… …
411 $idx); 430 $idx);
412} 431}
413 432
414sub handle_file { 433sub handle_file {
415 my $self = shift; 434 my $self = shift;
416 my $length = -s _; 435 my $length = $self->{stat}[7];
436 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
417 my $hdr = { 437 my $hdr = {
418 "Last-Modified" => time2str ((stat _)[9]), 438 "Last-Modified" => time2str ((stat _)[9]),
419 }; 439 };
420 440
421 my @code = (200, "ok"); 441 my @code = (200, "ok");
… …
429 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 449 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
430 } else { 450 } else {
431 ($l, $h) = (0, $length - 1); 451 ($l, $h) = (0, $length - 1);
432 goto ignore; 452 goto ignore;
433 } 453 }
434 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 454 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
435 } 455 }
436 $hdr->{"Content-Range"} = "bytes */$length"; 456 $hdr->{"Content-Range"} = "bytes */$length";
437 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")"); 457 $hdr->{"Content-Length"} = $length;
438 $self->err(416, "not satisfiable", $hdr); 458 $self->err(416, "not satisfiable", $hdr, "");
439 459
440satisfiable: 460satisfiable:
441 # check for segmented downloads 461 # check for segmented downloads
442 if ($l && $::NO_SEGMENTED) { 462 if ($l && $::NO_SEGMENTED) {
463 my $delay = $::PER_TIMEOUT + 15;
443 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 464 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
465 if ($delay <= 0) {
466 $self->err_segmented_download;
467 } else {
444 Coro::Event::do_timer(after => 15); 468 Coro::Event::do_timer(after => 4); $delay -= 4;
445 469 }
446 $self->err(400, "segmented downloads are not allowed");
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 $scheduler->now;
489 }); 530 });
490 &Coro::schedule; 531 &Coro::schedule;
532 $aio_requests->up;
491 last unless $r; 533 last unless $r;
492 } 534 }
493 my $w = $self->{fh}->syswrite($buf) 535 my $w = $self->{fh}->syswrite($buf)
494 or last; 536 or last;
495 $::written += $w; 537 $::written += $w;
496 $self->{written} += $w; 538 $self->{written} += $w;
497 $l += $r; 539 $l += $r;
498 } 540 }
499 }
500 541
501 close $fh; 542 close $fh;
543 }
502} 544}
503 545
5041; 5461;

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