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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 1.38 by root, Sun Sep 2 02:27:51 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"
27sub handler { 45sub handler {
28 while () { 46 while () {
29 my $new = pop @newcons;
30 if ($new) { 47 if (@newcons) {
31 eval { 48 eval {
32 conn->new(@$new)->handle; 49 conn->new(@{pop @newcons})->handle;
33 }; 50 };
34 slog 1, "$@" if $@ && !ref $@; 51 slog 1, "$@" if $@ && !ref $@;
35 $connections->up; 52 $connections->up;
36 } else { 53 } else {
37 last if @pool >= $MAX_POOL; 54 last if @pool >= $MAX_POOL;
… …
48 Listen => 50, 65 Listen => 50,
49 or die "unable to start server"; 66 or die "unable to start server";
50 67
51push @listen_sockets, $http_port; 68push @listen_sockets, $http_port;
52 69
70our $NOW;
71our $HTTP_NOW;
72
73Event->timer(interval => 1, hard => 1, cb => sub {
74 $NOW = time;
75 $HTTP_NOW = time2str $NOW;
76})->now;
77
53# the "main thread" 78# the "main thread"
54async { 79async {
55 slog 1, "accepting connections"; 80 slog 1, "accepting connections";
56 while () { 81 while () {
57 $connections->down; 82 $connections->down;
58 push @newcons, [$http_port->accept]; 83 push @newcons, [$http_port->accept];
59 #slog 3, "accepted @$connections ".scalar(@pool); 84 #slog 3, "accepted @$connections ".scalar(@pool);
60 $::NOW = time;
61 if (@pool) { 85 if (@pool) {
62 (pop @pool)->ready; 86 (pop @pool)->ready;
63 } else { 87 } else {
64 async \&handler; 88 async \&handler;
65 } 89 }
… …
77Linux::AIO::min_parallel $::AIO_PARALLEL; 101Linux::AIO::min_parallel $::AIO_PARALLEL;
78 102
79Event->io(fd => Linux::AIO::poll_fileno, 103Event->io(fd => Linux::AIO::poll_fileno,
80 poll => 'r', async => 1, 104 poll => 'r', async => 1,
81 cb => \&Linux::AIO::poll_cb); 105 cb => \&Linux::AIO::poll_cb);
82my $scheduler = Event->idle(
83 max => 0, min => 0, prio => 6, parked => 1,
84 cb => \&Coro::schedule);
85 106
86our %conn; # $conn{ip}{fh} => connobj 107our %conn; # $conn{ip}{self} => connobj
108our %uri; # $uri{ip}{uri}{self}
87our %blocked; 109our %blocked;
88our %mimetype; 110our %mimetype;
89 111
90sub read_mimetypes { 112sub read_mimetypes {
91 local *M; 113 local *M;
… …
111 or $self->err(500, "unable to decode peername"); 133 or $self->err(500, "unable to decode peername");
112 134
113 $self->{remote_addr} = inet_ntoa $iaddr; 135 $self->{remote_addr} = inet_ntoa $iaddr;
114 $self->{time} = $::NOW; 136 $self->{time} = $::NOW;
115 137
116 # enter ourselves into various lists
117 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
118
119 $::conns++; 138 $::conns++;
120 139
121 $self; 140 $self;
122} 141}
123 142
… …
125 my $self = shift; 144 my $self = shift;
126 145
127 $::conns--; 146 $::conns--;
128 147
129 $self->eoconn; 148 $self->eoconn;
130 delete $conn{$self->{remote_addr}}{$self*1};
131} 149}
132 150
133# end of connection 151# end of connection
134sub eoconn { 152sub eoconn {
153 my $self = shift;
154
155 # clean up hints
156 delete $conn{$self->{remote_id}}{$self*1};
135 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 157 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
136} 158}
137 159
138sub slog { 160sub slog {
139 my $self = shift; 161 my $self = shift;
140 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 162 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
141} 163}
142 164
143sub response { 165sub response {
144 my ($self, $code, $msg, $hdr, $content) = @_; 166 my ($self, $code, $msg, $hdr, $content) = @_;
145 my $res = "HTTP/1.1 $code $msg\015\012"; 167 my $res = "HTTP/1.1 $code $msg\015\012";
146 168
147 #$res .= "Connection: close\015\012"; 169 $self->{h}{connection} ||= $hdr->{Connection};
148 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 170
171 $res .= "Date: $HTTP_NOW\015\012";
149 172
150 while (my ($h, $v) = each %$hdr) { 173 while (my ($h, $v) = each %$hdr) {
151 $res .= "$h: $v\015\012" 174 $res .= "$h: $v\015\012"
152 } 175 }
153 $res .= "\015\012"; 176 $res .= "\015\012";
154 177
155 $res .= $content if defined $content and $self->{method} ne "HEAD"; 178 $res .= $content if defined $content and $self->{method} ne "HEAD";
156 179
157 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# 180 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
181
182 print $accesslog $log if $accesslog;
183 print STDERR $log;
158 184
159 $self->{written} += 185 $self->{written} +=
160 print {$self->{fh}} $res; 186 print {$self->{fh}} $res;
161} 187}
162 188
163sub err { 189sub err {
164 my $self = shift; 190 my $self = shift;
165 my ($code, $msg, $hdr, $content) = @_; 191 my ($code, $msg, $hdr, $content) = @_;
166 192
167 unless (defined $content) { 193 unless (defined $content) {
168 $content = "$code $msg"; 194 $content = "$code $msg\n";
169 $hdr->{"Content-Type"} = "text/plain"; 195 $hdr->{"Content-Type"} = "text/plain";
170 $hdr->{"Content-Length"} = length $content; 196 $hdr->{"Content-Length"} = length $content;
171 } 197 }
172 $hdr->{"Connection"} = "close"; 198 $hdr->{"Connection"} = "close";
173 199
174 $self->response($code, $msg, $hdr, $content); 200 $self->response($code, $msg, $hdr, $content);
175 201
176 die bless {}, err::; 202 die bless {}, err::;
177} 203}
178 204
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 { 205sub handle {
207 my $self = shift; 206 my $self = shift;
208 my $fh = $self->{fh}; 207 my $fh = $self->{fh};
208
209 my $host;
209 210
210 $fh->timeout($::REQ_TIMEOUT); 211 $fh->timeout($::REQ_TIMEOUT);
211 while() { 212 while() {
212 $self->{reqs}++; 213 $self->{reqs}++;
213 214
… …
223 } 224 }
224 225
225 $self->{h} = {}; 226 $self->{h} = {};
226 227
227 $fh->timeout($::RES_TIMEOUT); 228 $fh->timeout($::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 }
241 229
242 $req =~ /^(?:\015\012)? 230 $req =~ /^(?:\015\012)?
243 (GET|HEAD) \040+ 231 (GET|HEAD) \040+
244 ([^\040]+) \040+ 232 ([^\040]+) \040+
245 HTTP\/([0-9]+\.[0-9]+) 233 HTTP\/([0-9]+\.[0-9]+)
… …
270 258
271 $self->{h}{$h} = substr $v, 1 259 $self->{h}{$h} = substr $v, 1
272 while ($h, $v) = each %hdr; 260 while ($h, $v) = each %hdr;
273 } 261 }
274 262
263 # remote id should be unique per user
264 my $id = $self->{remote_addr};
265
266 if (exists $self->{h}{"client-ip"}) {
267 $id .= "[".$self->{h}{"client-ip"}."]";
268 } elsif (exists $self->{h}{"x-forwarded-for"}) {
269 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
270 }
271
272 $self->{remote_id} = $id;
273
274 if ($blocked{$id}) {
275 $self->err_blocked($blocked{$id})
276 if $blocked{$id} > $::NOW;
277
278 delete $blocked{$id};
279 }
280
281 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
282 my $delay = $::PER_TIMEOUT + 15;
283 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
284 if ($delay <= 0) {
285 $self->slog(2, "blocked ip $id");
286 $self->err_blocked;
287 } else {
288 Coro::Event::do_timer(after => 4); $delay -= 4;
289 }
290 }
291 }
292
293 # find out server name and port
294 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
295 $host = $1;
296 } else {
297 $host = $self->{h}{host};
298 }
299
300 if (defined $host) {
275 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 301 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
302 } else {
303 ($self->{server_port}, $host)
304 = unpack_sockaddr_in $self->{fh}->getsockname
305 or $self->err(500, "unable to get socket name");
306 $host = inet_ntoa $host;
307 }
276 308
309 $self->{server_name} = $host;
310
311 # enter ourselves into various lists
312 weaken ($conn{$id}{$self*1} = $self);
277 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 313 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
278 314
315 eval {
279 $self->map_uri; 316 $self->map_uri;
280 $self->respond; 317 $self->respond;
318 };
281 319
282 $self->eoconn; 320 $self->eoconn;
283 321
322 die if $@ && !ref $@;
323
284 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 324 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
285 325
286 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
287 $fh->timeout($::PER_TIMEOUT); 326 $fh->timeout($::PER_TIMEOUT);
288 } 327 }
289} 328}
290 329
291# uri => path mapping 330# uri => path mapping
292sub map_uri { 331sub map_uri {
293 my $self = shift; 332 my $self = shift;
294 my $host = $self->{h}{host} || "default"; 333 my $host = $self->{server_name};
295 my $uri = $self->{uri}; 334 my $uri = $self->{uri};
296 335
297 # some massaging, also makes it more secure 336 # some massaging, also makes it more secure
298 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 337 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
299 $uri =~ s%//+%/%g; 338 $uri =~ s%//+%/%g;
… …
309 $self->{path} = "$::DOCROOT/$host$uri"; 348 $self->{path} = "$::DOCROOT/$host$uri";
310 349
311 $self->access_check; 350 $self->access_check;
312} 351}
313 352
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 { 353sub _cgi {
343 my $self = shift; 354 my $self = shift;
344 my $path = shift; 355 my $path = shift;
345 my $fh; 356 my $fh;
346 357
347 # no two-way xxx supported 358 # no two-way xxx supported
348 if (0 == fork) { 359 if (0 == fork) {
349 open STDOUT, ">&".fileno($self->{fh}); 360 open STDOUT, ">&".fileno($self->{fh});
350 if (chdir $::DOCROOT) { 361 if (chdir $::DOCROOT) {
351 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 362 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
352 $ENV{HTTP_HOST} = $self->server_host; 363 $ENV{HTTP_HOST} = $self->{server_name};
353 $ENV{HTTP_PORT} = $self->{server_host}; 364 $ENV{HTTP_PORT} = $self->{server_port};
354 $ENV{SCRIPT_NAME} = $self->{name}; 365 $ENV{SCRIPT_NAME} = $self->{name};
355 exec $path; 366 exec $path;
356 } 367 }
357 Coro::State::_exit(0); 368 Coro::State::_exit(0);
358 } else { 369 } else {
370 die;
359 } 371 }
372}
373
374sub server_hostport {
375 $_[0]{server_port} == 80
376 ? $_[0]{server_name}
377 : "$_[0]{server_name}:$_[0]{server_port}";
360} 378}
361 379
362sub respond { 380sub respond {
363 my $self = shift; 381 my $self = shift;
364 my $path = $self->{path}; 382 my $path = $self->{path};
… …
374 392
375 if (-d _ && -r _) { 393 if (-d _ && -r _) {
376 # directory 394 # directory
377 if ($path !~ /\/$/) { 395 if ($path !~ /\/$/) {
378 # create a redirect to get the trailing "/" 396 # create a redirect to get the trailing "/"
379 my $host = $self->server_hostport; 397 # we don't try to avoid the :80
380 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 398 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
381 } else { 399 } else {
382 $ims < $self->{stat}[9] 400 $ims < $self->{stat}[9]
383 or $self->err(304, "not modified"); 401 or $self->err(304, "not modified");
384 402
385 if ($self->{method} eq "GET") {
386 if (-r "$path/index.html") { 403 if (-r "$path/index.html") {
387 $self->{path} .= "/index.html"; 404 $self->{path} .= "/index.html";
388 $self->handle_file; 405 $self->handle_file;
389 } else { 406 } else {
390 $self->handle_dir; 407 $self->handle_dir;
391 }
392 } 408 }
393 } 409 }
394 } elsif (-f _ && -r _) { 410 } elsif (-f _ && -r _) {
395 -x _ and $self->err(403, "forbidden"); 411 -x _ and $self->err(403, "forbidden");
396 $self->handle_file; 412 $self->handle_file;
… …
411 $idx); 427 $idx);
412} 428}
413 429
414sub handle_file { 430sub handle_file {
415 my $self = shift; 431 my $self = shift;
416 my $length = -s _; 432 my $length = $self->{stat}[7];
433 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
417 my $hdr = { 434 my $hdr = {
418 "Last-Modified" => time2str ((stat _)[9]), 435 "Last-Modified" => time2str ((stat _)[9]),
419 }; 436 };
420 437
421 my @code = (200, "ok"); 438 my @code = (200, "ok");
… …
429 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 446 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
430 } else { 447 } else {
431 ($l, $h) = (0, $length - 1); 448 ($l, $h) = (0, $length - 1);
432 goto ignore; 449 goto ignore;
433 } 450 }
434 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 451 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
435 } 452 }
436 $hdr->{"Content-Range"} = "bytes */$length"; 453 $hdr->{"Content-Range"} = "bytes */$length";
437 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")"); 454 $hdr->{"Content-Length"} = $length;
438 $self->err(416, "not satisfiable", $hdr); 455 $self->err(416, "not satisfiable", $hdr, "");
439 456
440satisfiable: 457satisfiable:
441 # check for segmented downloads 458 # check for segmented downloads
442 if ($l && $::NO_SEGMENTED) { 459 if ($l && $::NO_SEGMENTED) {
460 my $delay = $::PER_TIMEOUT + 15;
443 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 461 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
462 if ($delay <= 0) {
463 $self->err_segmented_download;
464 } else {
444 Coro::Event::do_timer(after => 15); 465 Coro::Event::do_timer(after => 4); $delay -= 4;
445 466 }
446 $self->err(400, "segmented downloads are not allowed");
447 } 467 }
448 } 468 }
449 469
450 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 470 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
451 @code = (206, "partial content"); 471 @code = (206, "partial content");
… …
461 $hdr->{"Content-Length"} = $length; 481 $hdr->{"Content-Length"} = $length;
462 482
463 $self->response(@code, $hdr, ""); 483 $self->response(@code, $hdr, "");
464 484
465 if ($self->{method} eq "GET") { 485 if ($self->{method} eq "GET") {
486 $self->{time} = $::NOW;
487
488 my $fudge = $queue->[0]->waiters;
489 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
490
491 $queue->[1] *= $fudge;
492 my $transfer = $queue->[0]->guard;
493
494 if ($fudge != 1) {
495 $queue->[1] /= $fudge;
496 $queue->[1] = $queue->[1] * $::wait_factor
497 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
498 }
499 $self->{time} = $::NOW;
500
501 $self->{fh}->writable or return;
502
466 my ($fh, $buf, $r); 503 my ($fh, $buf, $r);
467 my $current = $Coro::current; 504 my $current = $Coro::current;
468 open $fh, "<", $self->{path} 505 open $fh, "<", $self->{path}
469 or die "$self->{path}: late open failure ($!)"; 506 or die "$self->{path}: late open failure ($!)";
470 507
… …
482 or last; 519 or last;
483 } else { 520 } else {
484 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 521 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
485 $buf, 0, sub { 522 $buf, 0, sub {
486 $r = $_[0]; 523 $r = $_[0];
487 $current->ready; 524 Coro::ready($current);
488 $scheduler->now;
489 }); 525 });
490 &Coro::schedule; 526 &Coro::schedule;
491 last unless $r; 527 last unless $r;
492 } 528 }
493 my $w = $self->{fh}->syswrite($buf) 529 my $w = syswrite $self->{fh}, $buf
494 or last; 530 or last;
495 $::written += $w; 531 $::written += $w;
496 $self->{written} += $w; 532 $self->{written} += $w;
497 $l += $r; 533 $l += $r;
498 } 534 }
499 }
500 535
501 close $fh; 536 close $fh;
537 }
502} 538}
503 539
5041; 5401;

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