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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.16 by root, Tue Aug 14 19:38:25 2001 UTC vs.
Revision 1.35 by root, Thu Aug 30 12:35:28 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', 107 poll => 'r', async => 1,
81 async => 1,
82 cb => \&Linux::AIO::poll_cb ); 108 cb => \&Linux::AIO::poll_cb);
83 109
84Event->add_hooks(prepare => sub {
85 &Coro::cede while &Coro::nready;
86 1e6;
87});
88
89our %conn; # $conn{ip}{fh} => connobj 110our %conn; # $conn{ip}{self} => connobj
111our %uri; # $uri{ip}{uri}{self}
90our %blocked; 112our %blocked;
91our %mimetype; 113our %mimetype;
92 114
93sub read_mimetypes { 115sub read_mimetypes {
94 local *M; 116 local *M;
… …
127sub DESTROY { 149sub DESTROY {
128 my $self = shift; 150 my $self = shift;
129 151
130 $::conns--; 152 $::conns--;
131 153
154 $self->eoconn;
132 delete $conn{$self->{remote_addr}}{$self*1}; 155 delete $conn{$self->{remote_addr}}{$self*1};
156}
157
158# end of connection
159sub eoconn {
160 my $self = shift;
133 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 161 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1};
134} 162}
135 163
136sub slog { 164sub slog {
137 my $self = shift; 165 my $self = shift;
138 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 166 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
139} 167}
140 168
141sub response { 169sub response {
142 my ($self, $code, $msg, $hdr, $content) = @_; 170 my ($self, $code, $msg, $hdr, $content) = @_;
143 my $res = "HTTP/1.0 $code $msg\015\012"; 171 my $res = "HTTP/1.1 $code $msg\015\012";
144 172
145 $res .= "Connection: close\015\012"; 173 $self->{h}{connection} ||= $hdr->{Connection};
146 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 174
175 $res .= "Date: $HTTP_NOW\015\012";
147 176
148 while (my ($h, $v) = each %$hdr) { 177 while (my ($h, $v) = each %$hdr) {
149 $res .= "$h: $v\015\012" 178 $res .= "$h: $v\015\012"
150 } 179 }
151 $res .= "\015\012"; 180 $res .= "\015\012";
152 181
153 $res .= $content if defined $content and $self->{method} ne "HEAD"; 182 $res .= $content if defined $content and $self->{method} ne "HEAD";
154 183
155 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# 184 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
185
186 print $accesslog $log if $accesslog;
187 print STDERR $log;
156 188
157 $self->{written} += 189 $self->{written} +=
158 print {$self->{fh}} $res; 190 print {$self->{fh}} $res;
159} 191}
160 192
161sub err { 193sub err {
162 my $self = shift; 194 my $self = shift;
163 my ($code, $msg, $hdr, $content) = @_; 195 my ($code, $msg, $hdr, $content) = @_;
164 196
165 unless (defined $content) { 197 unless (defined $content) {
166 $content = "$code $msg"; 198 $content = "$code $msg\n";
167 $hdr->{"Content-Type"} = "text/plain"; 199 $hdr->{"Content-Type"} = "text/plain";
168 $hdr->{"Content-Length"} = length $content; 200 $hdr->{"Content-Length"} = length $content;
169 } 201 }
202 $hdr->{"Connection"} = "close";
170 203
171 $self->response($code, $msg, $hdr, $content); 204 $self->response($code, $msg, $hdr, $content);
172 205
173 die bless {}, err::; 206 die bless {}, err::;
174} 207}
175 208
176sub err_blocked {
177 my $self = shift;
178 my $ip = $self->{remote_addr};
179 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
180
181 Coro::Event::do_timer(after => 15);
182
183 $self->err(401, "too many connections",
184 {
185 "Content-Type" => "text/html",
186 "Retry-After" => $::BLOCKTIME
187 },
188 <<EOF);
189<html><p>
190You have been blocked because you opened too many connections. You
191may retry at</p>
192
193 <p><blockquote>$time.</blockquote></p>
194
195<p>Until then, each new access will renew the block. You might want to have a
196look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
197</html>
198EOF
199}
200
201sub handle { 209sub handle {
202 my $self = shift; 210 my $self = shift;
203 my $fh = $self->{fh}; 211 my $fh = $self->{fh};
204 212
213 my $host;
214
215 $fh->timeout($::REQ_TIMEOUT);
205 #while() { 216 while() {
217 $self->{reqs}++;
218
219 # read request and parse first line
220 my $req = $fh->readline("\015\012\015\012");
221
222 unless (defined $req) {
223 if (exists $self->{version}) {
224 last;
225 } else {
226 $self->err(408, "request timeout");
227 }
228 }
229
206 $self->{h} = {}; 230 $self->{h} = {};
207 231
208 # read request and parse first line
209 $fh->timeout($::REQ_TIMEOUT);
210 my $req = $fh->readline("\015\012\015\012");
211 $fh->timeout($::RES_TIMEOUT); 232 $fh->timeout($::RES_TIMEOUT);
212
213 defined $req or
214 $self->err(408, "request timeout");
215
216 my $ip = $self->{remote_addr}; 233 my $ip = $self->{remote_addr};
217 234
218 if ($blocked{$ip}) { 235 if ($blocked{$ip}) {
219 $self->err_blocked($blocked{$ip}) 236 $self->err_blocked($blocked{$ip})
220 if $blocked{$ip} > $::NOW; 237 if $blocked{$ip} > $::NOW;
221 238
222 delete $blocked{$ip}; 239 delete $blocked{$ip};
223 } 240 }
224 241
225 if (%{$conn{$ip}} > $::MAX_CONN_IP) { 242 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
243 my $delay = 120;
244 while (%{$conn{$ip}} > $::MAX_CONN_IP) {
245 if ($delay <= 0) {
226 $self->slog(2, "blocked ip $ip"); 246 $self->slog(2, "blocked ip $ip");
227 $self->err_blocked; 247 $self->err_blocked;
248 } else {
249 Coro::Event::do_timer(after => 3);
250 $delay -= 3;
251 }
252 }
228 } 253 }
229 254
230 $req =~ /^(?:\015\012)? 255 $req =~ /^(?:\015\012)?
231 (GET|HEAD) \040+ 256 (GET|HEAD) \040+
232 ([^\040]+) \040+ 257 ([^\040]+) \040+
233 HTTP\/([0-9]+\.[0-9]+) 258 HTTP\/([0-9]+\.[0-9]+)
234 \015\012/gx 259 \015\012/gx
235 or $self->err(405, "method not allowed", { Allow => "GET,HEAD" }); 260 or $self->err(405, "method not allowed", { Allow => "GET,HEAD" });
236 261
237 $2 ne "1.0"
238 or $self->err(506, "http protocol version not supported");
239
240 $self->{method} = $1; 262 $self->{method} = $1;
241 $self->{uri} = $2; 263 $self->{uri} = $2;
264 $self->{version} = $3;
265
266 $3 =~ /^1\./
267 or $self->err(506, "http protocol version $3 not supported");
242 268
243 # parse headers 269 # parse headers
244 { 270 {
245 my (%hdr, $h, $v); 271 my (%hdr, $h, $v);
246 272
… …
257 283
258 $self->{h}{$h} = substr $v, 1 284 $self->{h}{$h} = substr $v, 1
259 while ($h, $v) = each %hdr; 285 while ($h, $v) = each %hdr;
260 } 286 }
261 287
288 # find out server name and port
289 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
290 $host = $1;
291 } else {
292 $host = $self->{h}{host};
293 }
294
295 if (defined $host) {
262 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 296 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
297 } else {
298 ($self->{server_port}, $host)
299 = unpack_sockaddr_in $self->{fh}->getsockname
300 or $self->err(500, "unable to get socket name");
301 $host = inet_ntoa $host;
302 }
303
304 $self->{server_name} = $host;
305
306 # remote id should be unique per user
307 $self->{remote_id} = $self->{remote_addr};
308
309 if (exists $self->{h}{"client-ip"}) {
310 $self->{remote_id} .= "[".$self->{h}{"client-ip"}."]";
311 } elsif (exists $self->{h}{"x-forwarded-for"}) {
312 $self->{remote_id} .= "[".$self->{h}{"x-forwarded-for"}."]";
313 }
263 314
264 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 315 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self);
265 316
317 eval {
266 $self->map_uri; 318 $self->map_uri;
267 $self->respond; 319 $self->respond;
320 };
321
322 $self->eoconn;
323
324 die if $@ && !ref $@;
325
326 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
327
328 $fh->timeout($::PER_TIMEOUT);
268 #} 329 }
269} 330}
270 331
271# uri => path mapping 332# uri => path mapping
272sub map_uri { 333sub map_uri {
273 my $self = shift; 334 my $self = shift;
274 my $host = $self->{h}{host} || "default"; 335 my $host = $self->{server_name};
275 my $uri = $self->{uri}; 336 my $uri = $self->{uri};
276 337
277 # some massaging, also makes it more secure 338 # some massaging, also makes it more secure
278 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 339 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
279 $uri =~ s%//+%/%g; 340 $uri =~ s%//+%/%g;
… …
289 $self->{path} = "$::DOCROOT/$host$uri"; 350 $self->{path} = "$::DOCROOT/$host$uri";
290 351
291 $self->access_check; 352 $self->access_check;
292} 353}
293 354
294sub server_address {
295 my $self = shift;
296 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
297 or $self->err(500, "unable to get socket name");
298 ((inet_ntoa $iaddr), $port);
299}
300
301sub server_host {
302 my $self = shift;
303 if (exists $self->{h}{host}) {
304 return $self->{h}{host};
305 } else {
306 return (($self->server_address)[0]);
307 }
308}
309
310sub server_hostport {
311 my $self = shift;
312 my ($host, $port);
313 if (exists $self->{h}{host}) {
314 ($host, $port) = ($self->{h}{host}, $self->{server_port});
315 } else {
316 ($host, $port) = $self->server_address;
317 }
318 $port = $port == 80 ? "" : ":$port";
319 $host.$port;
320}
321
322sub _cgi { 355sub _cgi {
323 my $self = shift; 356 my $self = shift;
324 my $path = shift; 357 my $path = shift;
325 my $fh; 358 my $fh;
326 359
327 # no two-way xxx supported 360 # no two-way xxx supported
328 if (0 == fork) { 361 if (0 == fork) {
329 open STDOUT, ">&".fileno($self->{fh}); 362 open STDOUT, ">&".fileno($self->{fh});
330 if (chdir $::DOCROOT) { 363 if (chdir $::DOCROOT) {
331 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 364 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
332 $ENV{HTTP_HOST} = $self->server_host; 365 $ENV{HTTP_HOST} = $self->{server_name};
333 $ENV{HTTP_PORT} = $self->{server_host}; 366 $ENV{HTTP_PORT} = $self->{server_port};
334 $ENV{SCRIPT_NAME} = $self->{name}; 367 $ENV{SCRIPT_NAME} = $self->{name};
335 exec $path; 368 exec $path;
336 } 369 }
337 Coro::State::_exit(0); 370 Coro::State::_exit(0);
338 } else { 371 } else {
372 die;
339 } 373 }
374}
375
376sub server_hostport {
377 $_[0]{server_port} == 80
378 ? $_[0]{server_name}
379 : "$_[0]{server_name}:$_[0]{server_port}";
340} 380}
341 381
342sub respond { 382sub respond {
343 my $self = shift; 383 my $self = shift;
344 my $path = $self->{path}; 384 my $path = $self->{path};
… …
354 394
355 if (-d _ && -r _) { 395 if (-d _ && -r _) {
356 # directory 396 # directory
357 if ($path !~ /\/$/) { 397 if ($path !~ /\/$/) {
358 # create a redirect to get the trailing "/" 398 # create a redirect to get the trailing "/"
359 my $host = $self->server_hostport; 399 # we don't try to avoid the :80
360 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 400 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
361 } else { 401 } else {
362 $ims < $self->{stat}[9] 402 $ims < $self->{stat}[9]
363 or $self->err(304, "not modified"); 403 or $self->err(304, "not modified");
364 404
365 if ($self->{method} eq "GET") {
366 if (-r "$path/index.html") { 405 if (-r "$path/index.html") {
367 $self->{path} .= "/index.html"; 406 $self->{path} .= "/index.html";
368 $self->handle_file; 407 $self->handle_file;
369 } else { 408 } else {
370 $self->handle_dir; 409 $self->handle_dir;
371 }
372 } 410 }
373 } 411 }
374 } elsif (-f _ && -r _) { 412 } elsif (-f _ && -r _) {
375 -x _ and $self->err(403, "forbidden"); 413 -x _ and $self->err(403, "forbidden");
376 $self->handle_file; 414 $self->handle_file;
… …
391 $idx); 429 $idx);
392} 430}
393 431
394sub handle_file { 432sub handle_file {
395 my $self = shift; 433 my $self = shift;
396 my $length = -s _; 434 my $length = $self->{stat}[7];
435 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
397 my $hdr = { 436 my $hdr = {
398 "Last-Modified" => time2str ((stat _)[9]), 437 "Last-Modified" => time2str ((stat _)[9]),
399 }; 438 };
400 439
401 my @code = (200, "ok"); 440 my @code = (200, "ok");
… …
409 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 448 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
410 } else { 449 } else {
411 ($l, $h) = (0, $length - 1); 450 ($l, $h) = (0, $length - 1);
412 goto ignore; 451 goto ignore;
413 } 452 }
414 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 453 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
415 } 454 }
416 $hdr->{"Content-Range"} = "bytes */$length"; 455 $hdr->{"Content-Range"} = "bytes */$length";
456 $hdr->{"Content-Length"} = $length;
417 $self->err(416, "not satisfiable", $hdr); 457 $self->err(416, "not satisfiable", $hdr, "");
418 458
419satisfiable: 459satisfiable:
420 # check for segmented downloads 460 # check for segmented downloads
421 if ($l && $::NO_SEGMENTED) { 461 if ($l && $::NO_SEGMENTED) {
462 my $delay = 180;
422 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 463 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) {
464 if ($delay <= 0) {
465 $self->err_segmented_download;
466 } else {
423 Coro::Event::do_timer(after => 15); 467 Coro::Event::do_timer(after => 3); $delay -= 3;
424 468 }
425 $self->err(400, "segmented downloads are not allowed");
426 } 469 }
427 } 470 }
428 471
429 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 472 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
430 @code = (206, "partial content"); 473 @code = (206, "partial content");
… …
440 $hdr->{"Content-Length"} = $length; 483 $hdr->{"Content-Length"} = $length;
441 484
442 $self->response(@code, $hdr, ""); 485 $self->response(@code, $hdr, "");
443 486
444 if ($self->{method} eq "GET") { 487 if ($self->{method} eq "GET") {
488 $self->{time} = $::NOW;
489
490 my $fudge = $queue->[0]->waiters;
491 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
492
493 $queue->[1] *= $fudge;
494 my $transfer = $queue->[0]->guard;
495
496 if ($fudge != 1) {
497 $queue->[1] /= $fudge;
498 $queue->[1] = $queue->[1] * $::wait_factor
499 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
500 }
501 $self->{time} = $::NOW;
502
503 $self->{fh}->writable or return;
504
445 my ($fh, $buf, $r); 505 my ($fh, $buf, $r);
446 my $current = $Coro::current; 506 my $current = $Coro::current;
447 open $fh, "<", $self->{path} 507 open $fh, "<", $self->{path}
448 or die "$self->{path}: late open failure ($!)"; 508 or die "$self->{path}: late open failure ($!)";
449 509
450 $h -= $l - 1; 510 $h -= $l - 1;
451 511
512 if (0) {
513 if ($l) {
514 sysseek $fh, $l, 0;
515 }
516 }
517
452 while ($h > 0) { 518 while ($h > 0) {
519 if (0) {
520 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
521 or last;
522 } else {
523 undef $buf;
524 $aio_requests->down;
453 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 525 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
454 $buf, 0, sub { 526 $buf, 0, sub {
455 $r = $_[0]; 527 $r = $_[0];
456 $current->ready; 528 $current->ready;
457 }); 529 });
458 &Coro::schedule; 530 &Coro::schedule;
531 $aio_requests->up;
459 last unless $r; 532 last unless $r;
533 }
460 my $w = $self->{fh}->syswrite($buf) 534 my $w = $self->{fh}->syswrite($buf)
461 or last; 535 or last;
462 $::written += $w; 536 $::written += $w;
463 $self->{written} += $w; 537 $self->{written} += $w;
464 $l += $r; 538 $l += $r;
465 } 539 }
466 }
467 540
468 close $fh; 541 close $fh;
542 }
469} 543}
470 544
4711; 5451;

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