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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 1.37 by root, Sun Sep 2 01:03:53 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 }
… …
77Linux::AIO::min_parallel $::AIO_PARALLEL; 102Linux::AIO::min_parallel $::AIO_PARALLEL;
78 103
79Event->io(fd => Linux::AIO::poll_fileno, 104Event->io(fd => Linux::AIO::poll_fileno,
80 poll => 'r', async => 1, 105 poll => 'r', async => 1,
81 cb => \&Linux::AIO::poll_cb); 106 cb => \&Linux::AIO::poll_cb);
82my $scheduler = Event->idle(
83 max => 0, min => 0, prio => 6, parked => 1,
84 cb => \&Coro::schedule);
85 107
86our %conn; # $conn{ip}{fh} => connobj 108our %conn; # $conn{ip}{self} => connobj
109our %uri; # $uri{ip}{uri}{self}
87our %blocked; 110our %blocked;
88our %mimetype; 111our %mimetype;
89 112
90sub read_mimetypes { 113sub read_mimetypes {
91 local *M; 114 local *M;
… …
111 or $self->err(500, "unable to decode peername"); 134 or $self->err(500, "unable to decode peername");
112 135
113 $self->{remote_addr} = inet_ntoa $iaddr; 136 $self->{remote_addr} = inet_ntoa $iaddr;
114 $self->{time} = $::NOW; 137 $self->{time} = $::NOW;
115 138
116 # enter ourselves into various lists
117 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
118
119 $::conns++; 139 $::conns++;
120 140
121 $self; 141 $self;
122} 142}
123 143
… …
125 my $self = shift; 145 my $self = shift;
126 146
127 $::conns--; 147 $::conns--;
128 148
129 $self->eoconn; 149 $self->eoconn;
130 delete $conn{$self->{remote_addr}}{$self*1};
131} 150}
132 151
133# end of connection 152# end of connection
134sub eoconn { 153sub eoconn {
154 my $self = shift;
155
156 # clean up hints
157 delete $conn{$self->{remote_id}}{$self*1};
135 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 158 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
136} 159}
137 160
138sub slog { 161sub slog {
139 my $self = shift; 162 my $self = shift;
140 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 163 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
141} 164}
142 165
143sub response { 166sub response {
144 my ($self, $code, $msg, $hdr, $content) = @_; 167 my ($self, $code, $msg, $hdr, $content) = @_;
145 my $res = "HTTP/1.1 $code $msg\015\012"; 168 my $res = "HTTP/1.1 $code $msg\015\012";
146 169
147 #$res .= "Connection: close\015\012"; 170 $self->{h}{connection} ||= $hdr->{Connection};
148 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 171
172 $res .= "Date: $HTTP_NOW\015\012";
149 173
150 while (my ($h, $v) = each %$hdr) { 174 while (my ($h, $v) = each %$hdr) {
151 $res .= "$h: $v\015\012" 175 $res .= "$h: $v\015\012"
152 } 176 }
153 $res .= "\015\012"; 177 $res .= "\015\012";
154 178
155 $res .= $content if defined $content and $self->{method} ne "HEAD"; 179 $res .= $content if defined $content and $self->{method} ne "HEAD";
156 180
157 print STDERR "$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;
158 185
159 $self->{written} += 186 $self->{written} +=
160 print {$self->{fh}} $res; 187 print {$self->{fh}} $res;
161} 188}
162 189
163sub err { 190sub err {
164 my $self = shift; 191 my $self = shift;
165 my ($code, $msg, $hdr, $content) = @_; 192 my ($code, $msg, $hdr, $content) = @_;
166 193
167 unless (defined $content) { 194 unless (defined $content) {
168 $content = "$code $msg"; 195 $content = "$code $msg\n";
169 $hdr->{"Content-Type"} = "text/plain"; 196 $hdr->{"Content-Type"} = "text/plain";
170 $hdr->{"Content-Length"} = length $content; 197 $hdr->{"Content-Length"} = length $content;
171 } 198 }
172 $hdr->{"Connection"} = "close"; 199 $hdr->{"Connection"} = "close";
173 200
174 $self->response($code, $msg, $hdr, $content); 201 $self->response($code, $msg, $hdr, $content);
175 202
176 die bless {}, err::; 203 die bless {}, err::;
177} 204}
178 205
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 { 206sub handle {
207 my $self = shift; 207 my $self = shift;
208 my $fh = $self->{fh}; 208 my $fh = $self->{fh};
209
210 my $host;
209 211
210 $fh->timeout($::REQ_TIMEOUT); 212 $fh->timeout($::REQ_TIMEOUT);
211 while() { 213 while() {
212 $self->{reqs}++; 214 $self->{reqs}++;
213 215
… …
223 } 225 }
224 226
225 $self->{h} = {}; 227 $self->{h} = {};
226 228
227 $fh->timeout($::RES_TIMEOUT); 229 $fh->timeout($::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 }
241 230
242 $req =~ /^(?:\015\012)? 231 $req =~ /^(?:\015\012)?
243 (GET|HEAD) \040+ 232 (GET|HEAD) \040+
244 ([^\040]+) \040+ 233 ([^\040]+) \040+
245 HTTP\/([0-9]+\.[0-9]+) 234 HTTP\/([0-9]+\.[0-9]+)
… …
270 259
271 $self->{h}{$h} = substr $v, 1 260 $self->{h}{$h} = substr $v, 1
272 while ($h, $v) = each %hdr; 261 while ($h, $v) = each %hdr;
273 } 262 }
274 263
264 # remote id should be unique per user
265 my $id = $self->{remote_addr};
266
267 if (exists $self->{h}{"client-ip"}) {
268 $id .= "[".$self->{h}{"client-ip"}."]";
269 } elsif (exists $self->{h}{"x-forwarded-for"}) {
270 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
271 }
272
273 $self->{remote_id} = $id;
274
275 if ($blocked{$id}) {
276 $self->err_blocked($blocked{$id})
277 if $blocked{$id} > $::NOW;
278
279 delete $blocked{$id};
280 }
281
282 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
283 my $delay = $::PER_TIMEOUT + 15;
284 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
285 if ($delay <= 0) {
286 $self->slog(2, "blocked ip $id");
287 $self->err_blocked;
288 } else {
289 Coro::Event::do_timer(after => 4); $delay -= 4;
290 }
291 }
292 }
293
294 # find out server name and port
295 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
296 $host = $1;
297 } else {
298 $host = $self->{h}{host};
299 }
300
301 if (defined $host) {
275 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 302 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
303 } else {
304 ($self->{server_port}, $host)
305 = unpack_sockaddr_in $self->{fh}->getsockname
306 or $self->err(500, "unable to get socket name");
307 $host = inet_ntoa $host;
308 }
276 309
310 $self->{server_name} = $host;
311
312 # enter ourselves into various lists
313 weaken ($conn{$id}{$self*1} = $self);
277 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 314 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
278 315
316 eval {
279 $self->map_uri; 317 $self->map_uri;
280 $self->respond; 318 $self->respond;
319 };
281 320
282 $self->eoconn; 321 $self->eoconn;
283 322
323 die if $@ && !ref $@;
324
284 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 325 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
285 326
286 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
287 $fh->timeout($::PER_TIMEOUT); 327 $fh->timeout($::PER_TIMEOUT);
288 } 328 }
289} 329}
290 330
291# uri => path mapping 331# uri => path mapping
292sub map_uri { 332sub map_uri {
293 my $self = shift; 333 my $self = shift;
294 my $host = $self->{h}{host} || "default"; 334 my $host = $self->{server_name};
295 my $uri = $self->{uri}; 335 my $uri = $self->{uri};
296 336
297 # some massaging, also makes it more secure 337 # some massaging, also makes it more secure
298 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 338 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
299 $uri =~ s%//+%/%g; 339 $uri =~ s%//+%/%g;
… …
309 $self->{path} = "$::DOCROOT/$host$uri"; 349 $self->{path} = "$::DOCROOT/$host$uri";
310 350
311 $self->access_check; 351 $self->access_check;
312} 352}
313 353
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 { 354sub _cgi {
343 my $self = shift; 355 my $self = shift;
344 my $path = shift; 356 my $path = shift;
345 my $fh; 357 my $fh;
346 358
347 # no two-way xxx supported 359 # no two-way xxx supported
348 if (0 == fork) { 360 if (0 == fork) {
349 open STDOUT, ">&".fileno($self->{fh}); 361 open STDOUT, ">&".fileno($self->{fh});
350 if (chdir $::DOCROOT) { 362 if (chdir $::DOCROOT) {
351 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 363 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
352 $ENV{HTTP_HOST} = $self->server_host; 364 $ENV{HTTP_HOST} = $self->{server_name};
353 $ENV{HTTP_PORT} = $self->{server_host}; 365 $ENV{HTTP_PORT} = $self->{server_port};
354 $ENV{SCRIPT_NAME} = $self->{name}; 366 $ENV{SCRIPT_NAME} = $self->{name};
355 exec $path; 367 exec $path;
356 } 368 }
357 Coro::State::_exit(0); 369 Coro::State::_exit(0);
358 } else { 370 } else {
371 die;
359 } 372 }
373}
374
375sub server_hostport {
376 $_[0]{server_port} == 80
377 ? $_[0]{server_name}
378 : "$_[0]{server_name}:$_[0]{server_port}";
360} 379}
361 380
362sub respond { 381sub respond {
363 my $self = shift; 382 my $self = shift;
364 my $path = $self->{path}; 383 my $path = $self->{path};
… …
374 393
375 if (-d _ && -r _) { 394 if (-d _ && -r _) {
376 # directory 395 # directory
377 if ($path !~ /\/$/) { 396 if ($path !~ /\/$/) {
378 # create a redirect to get the trailing "/" 397 # create a redirect to get the trailing "/"
379 my $host = $self->server_hostport; 398 # we don't try to avoid the :80
380 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 399 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
381 } else { 400 } else {
382 $ims < $self->{stat}[9] 401 $ims < $self->{stat}[9]
383 or $self->err(304, "not modified"); 402 or $self->err(304, "not modified");
384 403
385 if ($self->{method} eq "GET") {
386 if (-r "$path/index.html") { 404 if (-r "$path/index.html") {
387 $self->{path} .= "/index.html"; 405 $self->{path} .= "/index.html";
388 $self->handle_file; 406 $self->handle_file;
389 } else { 407 } else {
390 $self->handle_dir; 408 $self->handle_dir;
391 }
392 } 409 }
393 } 410 }
394 } elsif (-f _ && -r _) { 411 } elsif (-f _ && -r _) {
395 -x _ and $self->err(403, "forbidden"); 412 -x _ and $self->err(403, "forbidden");
396 $self->handle_file; 413 $self->handle_file;
… …
411 $idx); 428 $idx);
412} 429}
413 430
414sub handle_file { 431sub handle_file {
415 my $self = shift; 432 my $self = shift;
416 my $length = -s _; 433 my $length = $self->{stat}[7];
434 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
417 my $hdr = { 435 my $hdr = {
418 "Last-Modified" => time2str ((stat _)[9]), 436 "Last-Modified" => time2str ((stat _)[9]),
419 }; 437 };
420 438
421 my @code = (200, "ok"); 439 my @code = (200, "ok");
… …
429 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 447 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
430 } else { 448 } else {
431 ($l, $h) = (0, $length - 1); 449 ($l, $h) = (0, $length - 1);
432 goto ignore; 450 goto ignore;
433 } 451 }
434 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 452 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
435 } 453 }
436 $hdr->{"Content-Range"} = "bytes */$length"; 454 $hdr->{"Content-Range"} = "bytes */$length";
437 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")"); 455 $hdr->{"Content-Length"} = $length;
438 $self->err(416, "not satisfiable", $hdr); 456 $self->err(416, "not satisfiable", $hdr, "");
439 457
440satisfiable: 458satisfiable:
441 # check for segmented downloads 459 # check for segmented downloads
442 if ($l && $::NO_SEGMENTED) { 460 if ($l && $::NO_SEGMENTED) {
461 my $delay = $::PER_TIMEOUT + 15;
443 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 462 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
463 if ($delay <= 0) {
464 $self->err_segmented_download;
465 } else {
444 Coro::Event::do_timer(after => 15); 466 Coro::Event::do_timer(after => 4); $delay -= 4;
445 467 }
446 $self->err(400, "segmented downloads are not allowed");
447 } 468 }
448 } 469 }
449 470
450 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 471 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
451 @code = (206, "partial content"); 472 @code = (206, "partial content");
… …
461 $hdr->{"Content-Length"} = $length; 482 $hdr->{"Content-Length"} = $length;
462 483
463 $self->response(@code, $hdr, ""); 484 $self->response(@code, $hdr, "");
464 485
465 if ($self->{method} eq "GET") { 486 if ($self->{method} eq "GET") {
487 $self->{time} = $::NOW;
488
489 my $fudge = $queue->[0]->waiters;
490 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
491
492 $queue->[1] *= $fudge;
493 my $transfer = $queue->[0]->guard;
494
495 if ($fudge != 1) {
496 $queue->[1] /= $fudge;
497 $queue->[1] = $queue->[1] * $::wait_factor
498 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
499 }
500 $self->{time} = $::NOW;
501
502 $self->{fh}->writable or return;
503
466 my ($fh, $buf, $r); 504 my ($fh, $buf, $r);
467 my $current = $Coro::current; 505 my $current = $Coro::current;
468 open $fh, "<", $self->{path} 506 open $fh, "<", $self->{path}
469 or die "$self->{path}: late open failure ($!)"; 507 or die "$self->{path}: late open failure ($!)";
470 508
… …
482 or last; 520 or last;
483 } else { 521 } else {
484 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 522 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
485 $buf, 0, sub { 523 $buf, 0, sub {
486 $r = $_[0]; 524 $r = $_[0];
487 $current->ready; 525 Coro::ready($current);
488 $scheduler->now;
489 }); 526 });
490 &Coro::schedule; 527 &Coro::schedule;
491 last unless $r; 528 last unless $r;
492 } 529 }
493 my $w = $self->{fh}->syswrite($buf) 530 my $w = syswrite $self->{fh}, $buf
494 or last; 531 or last;
495 $::written += $w; 532 $::written += $w;
496 $self->{written} += $w; 533 $self->{written} += $w;
497 $l += $r; 534 $l += $r;
498 } 535 }
499 }
500 536
501 close $fh; 537 close $fh;
538 }
502} 539}
503 540
5041; 5411;

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