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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.17 by root, Wed Aug 15 03:06:21 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 }
… …
76 101
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);
82 107
83Event->add_hooks(prepare => sub {
84 &Coro::cede;
85});
86
87our %conn; # $conn{ip}{fh} => connobj 108our %conn; # $conn{ip}{self} => connobj
109our %uri; # $uri{ip}{uri}{self}
88our %blocked; 110our %blocked;
89our %mimetype; 111our %mimetype;
90 112
91sub read_mimetypes { 113sub read_mimetypes {
92 local *M; 114 local *M;
… …
112 or $self->err(500, "unable to decode peername"); 134 or $self->err(500, "unable to decode peername");
113 135
114 $self->{remote_addr} = inet_ntoa $iaddr; 136 $self->{remote_addr} = inet_ntoa $iaddr;
115 $self->{time} = $::NOW; 137 $self->{time} = $::NOW;
116 138
117 # enter ourselves into various lists
118 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
119
120 $::conns++; 139 $::conns++;
121 140
122 $self; 141 $self;
123} 142}
124 143
125sub DESTROY { 144sub DESTROY {
126 my $self = shift; 145 my $self = shift;
127 146
128 $::conns--; 147 $::conns--;
129 148
149 $self->eoconn;
150}
151
152# end of connection
153sub eoconn {
154 my $self = shift;
155
156 # clean up hints
130 delete $conn{$self->{remote_addr}}{$self*1}; 157 delete $conn{$self->{remote_id}}{$self*1};
131 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 158 delete $uri{$self->{remote_id}}{$self->{uri}}{$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
159sub err { 190sub err {
160 my $self = shift; 191 my $self = shift;
161 my ($code, $msg, $hdr, $content) = @_; 192 my ($code, $msg, $hdr, $content) = @_;
162 193
163 unless (defined $content) { 194 unless (defined $content) {
164 $content = "$code $msg"; 195 $content = "$code $msg\n";
165 $hdr->{"Content-Type"} = "text/plain"; 196 $hdr->{"Content-Type"} = "text/plain";
166 $hdr->{"Content-Length"} = length $content; 197 $hdr->{"Content-Length"} = length $content;
167 } 198 }
168 $hdr->{"Connection"} = "close"; 199 $hdr->{"Connection"} = "close";
169 200
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
… …
217 } 225 }
218 226
219 $self->{h} = {}; 227 $self->{h} = {};
220 228
221 $fh->timeout($::RES_TIMEOUT); 229 $fh->timeout($::RES_TIMEOUT);
222 my $ip = $self->{remote_addr};
223
224 if ($blocked{$ip}) {
225 $self->err_blocked($blocked{$ip})
226 if $blocked{$ip} > $::NOW;
227
228 delete $blocked{$ip};
229 }
230
231 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
232 $self->slog(2, "blocked ip $ip");
233 $self->err_blocked;
234 }
235 230
236 $req =~ /^(?:\015\012)? 231 $req =~ /^(?:\015\012)?
237 (GET|HEAD) \040+ 232 (GET|HEAD) \040+
238 ([^\040]+) \040+ 233 ([^\040]+) \040+
239 HTTP\/([0-9]+\.[0-9]+) 234 HTTP\/([0-9]+\.[0-9]+)
… …
242 237
243 $self->{method} = $1; 238 $self->{method} = $1;
244 $self->{uri} = $2; 239 $self->{uri} = $2;
245 $self->{version} = $3; 240 $self->{version} = $3;
246 241
247 $3 eq "1.0" or $3 eq "1.1" 242 $3 =~ /^1\./
248 or $self->err(506, "http protocol version $3 not supported"); 243 or $self->err(506, "http protocol version $3 not supported");
249 244
250 # parse headers 245 # parse headers
251 { 246 {
252 my (%hdr, $h, $v); 247 my (%hdr, $h, $v);
… …
264 259
265 $self->{h}{$h} = substr $v, 1 260 $self->{h}{$h} = substr $v, 1
266 while ($h, $v) = each %hdr; 261 while ($h, $v) = each %hdr;
267 } 262 }
268 263
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) {
269 $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 }
270 309
310 $self->{server_name} = $host;
311
312 # enter ourselves into various lists
313 weaken ($conn{$id}{$self*1} = $self);
271 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 314 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
272 315
316 eval {
273 $self->map_uri; 317 $self->map_uri;
274 $self->respond; 318 $self->respond;
319 };
275 320
321 $self->eoconn;
322
323 die if $@ && !ref $@;
324
276 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 325 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
277 326
278 $self->slog(9, "persistant connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
279 $fh->timeout($::PER_TIMEOUT); 327 $fh->timeout($::PER_TIMEOUT);
280 } 328 }
281} 329}
282 330
283# uri => path mapping 331# uri => path mapping
284sub map_uri { 332sub map_uri {
285 my $self = shift; 333 my $self = shift;
286 my $host = $self->{h}{host} || "default"; 334 my $host = $self->{server_name};
287 my $uri = $self->{uri}; 335 my $uri = $self->{uri};
288 336
289 # some massaging, also makes it more secure 337 # some massaging, also makes it more secure
290 $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;
291 $uri =~ s%//+%/%g; 339 $uri =~ s%//+%/%g;
… …
301 $self->{path} = "$::DOCROOT/$host$uri"; 349 $self->{path} = "$::DOCROOT/$host$uri";
302 350
303 $self->access_check; 351 $self->access_check;
304} 352}
305 353
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 { 354sub _cgi {
335 my $self = shift; 355 my $self = shift;
336 my $path = shift; 356 my $path = shift;
337 my $fh; 357 my $fh;
338 358
339 # no two-way xxx supported 359 # no two-way xxx supported
340 if (0 == fork) { 360 if (0 == fork) {
341 open STDOUT, ">&".fileno($self->{fh}); 361 open STDOUT, ">&".fileno($self->{fh});
342 if (chdir $::DOCROOT) { 362 if (chdir $::DOCROOT) {
343 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 363 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
344 $ENV{HTTP_HOST} = $self->server_host; 364 $ENV{HTTP_HOST} = $self->{server_name};
345 $ENV{HTTP_PORT} = $self->{server_host}; 365 $ENV{HTTP_PORT} = $self->{server_port};
346 $ENV{SCRIPT_NAME} = $self->{name}; 366 $ENV{SCRIPT_NAME} = $self->{name};
347 exec $path; 367 exec $path;
348 } 368 }
349 Coro::State::_exit(0); 369 Coro::State::_exit(0);
350 } else { 370 } else {
371 die;
351 } 372 }
373}
374
375sub server_hostport {
376 $_[0]{server_port} == 80
377 ? $_[0]{server_name}
378 : "$_[0]{server_name}:$_[0]{server_port}";
352} 379}
353 380
354sub respond { 381sub respond {
355 my $self = shift; 382 my $self = shift;
356 my $path = $self->{path}; 383 my $path = $self->{path};
… …
366 393
367 if (-d _ && -r _) { 394 if (-d _ && -r _) {
368 # directory 395 # directory
369 if ($path !~ /\/$/) { 396 if ($path !~ /\/$/) {
370 # create a redirect to get the trailing "/" 397 # create a redirect to get the trailing "/"
371 my $host = $self->server_hostport; 398 # we don't try to avoid the :80
372 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 399 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
373 } else { 400 } else {
374 $ims < $self->{stat}[9] 401 $ims < $self->{stat}[9]
375 or $self->err(304, "not modified"); 402 or $self->err(304, "not modified");
376 403
377 if ($self->{method} eq "GET") {
378 if (-r "$path/index.html") { 404 if (-r "$path/index.html") {
379 $self->{path} .= "/index.html"; 405 $self->{path} .= "/index.html";
380 $self->handle_file; 406 $self->handle_file;
381 } else { 407 } else {
382 $self->handle_dir; 408 $self->handle_dir;
383 }
384 } 409 }
385 } 410 }
386 } elsif (-f _ && -r _) { 411 } elsif (-f _ && -r _) {
387 -x _ and $self->err(403, "forbidden"); 412 -x _ and $self->err(403, "forbidden");
388 $self->handle_file; 413 $self->handle_file;
… …
403 $idx); 428 $idx);
404} 429}
405 430
406sub handle_file { 431sub handle_file {
407 my $self = shift; 432 my $self = shift;
408 my $length = -s _; 433 my $length = $self->{stat}[7];
434 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
409 my $hdr = { 435 my $hdr = {
410 "Last-Modified" => time2str ((stat _)[9]), 436 "Last-Modified" => time2str ((stat _)[9]),
411 }; 437 };
412 438
413 my @code = (200, "ok"); 439 my @code = (200, "ok");
… …
421 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 447 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
422 } else { 448 } else {
423 ($l, $h) = (0, $length - 1); 449 ($l, $h) = (0, $length - 1);
424 goto ignore; 450 goto ignore;
425 } 451 }
426 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 452 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
427 } 453 }
428 $hdr->{"Content-Range"} = "bytes */$length"; 454 $hdr->{"Content-Range"} = "bytes */$length";
455 $hdr->{"Content-Length"} = $length;
429 $self->err(416, "not satisfiable", $hdr); 456 $self->err(416, "not satisfiable", $hdr, "");
430 457
431satisfiable: 458satisfiable:
432 # check for segmented downloads 459 # check for segmented downloads
433 if ($l && $::NO_SEGMENTED) { 460 if ($l && $::NO_SEGMENTED) {
461 my $delay = $::PER_TIMEOUT + 15;
434 if (%{$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 {
435 Coro::Event::do_timer(after => 15); 466 Coro::Event::do_timer(after => 4); $delay -= 4;
436 467 }
437 $self->err(400, "segmented downloads are not allowed");
438 } 468 }
439 } 469 }
440 470
441 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 471 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
442 @code = (206, "partial content"); 472 @code = (206, "partial content");
… …
452 $hdr->{"Content-Length"} = $length; 482 $hdr->{"Content-Length"} = $length;
453 483
454 $self->response(@code, $hdr, ""); 484 $self->response(@code, $hdr, "");
455 485
456 if ($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 $self->{fh}->writable or return;
503
457 my ($fh, $buf, $r); 504 my ($fh, $buf, $r);
458 my $current = $Coro::current; 505 my $current = $Coro::current;
459 open $fh, "<", $self->{path} 506 open $fh, "<", $self->{path}
460 or die "$self->{path}: late open failure ($!)"; 507 or die "$self->{path}: late open failure ($!)";
461 508
462 $h -= $l - 1; 509 $h -= $l - 1;
463 510
511 if (0) {
512 if ($l) {
513 sysseek $fh, $l, 0;
514 }
515 }
516
464 while ($h > 0) { 517 while ($h > 0) {
518 if (0) {
519 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
520 or last;
521 } else {
465 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 522 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
466 $buf, 0, sub { 523 $buf, 0, sub {
467 $r = $_[0]; 524 $r = $_[0];
468 $current->ready; 525 Coro::ready($current);
469 }); 526 });
470 &Coro::schedule; 527 &Coro::schedule;
471 last unless $r; 528 last unless $r;
472 my $w = $self->{fh}->syswrite($buf) 529 }
530 my $w = syswrite $self->{fh}, $buf
473 or last; 531 or last;
474 $::written += $w; 532 $::written += $w;
475 $self->{written} += $w; 533 $self->{written} += $w;
476 $l += $r; 534 $l += $r;
477 } 535 }
478 }
479 536
480 close $fh; 537 close $fh;
538 }
481} 539}
482 540
4831; 5411;

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