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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.25 by root, Sun Aug 19 22:14:26 2001 UTC vs.
Revision 1.39 by root, Sun Sep 2 12:23:04 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 }
… …
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);
82 106
83our %conn; # $conn{ip}{fh} => connobj 107our %conn; # $conn{ip}{self} => connobj
108our %uri; # $uri{ip}{uri}{self}
84our %blocked; 109our %blocked;
85our %mimetype; 110our %mimetype;
86 111
87sub read_mimetypes { 112sub read_mimetypes {
88 local *M; 113 local *M;
… …
108 or $self->err(500, "unable to decode peername"); 133 or $self->err(500, "unable to decode peername");
109 134
110 $self->{remote_addr} = inet_ntoa $iaddr; 135 $self->{remote_addr} = inet_ntoa $iaddr;
111 $self->{time} = $::NOW; 136 $self->{time} = $::NOW;
112 137
113 # enter ourselves into various lists
114 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
115
116 $::conns++; 138 $::conns++;
117 139
118 $self; 140 $self;
119} 141}
120 142
121sub DESTROY { 143sub DESTROY {
122 my $self = shift; 144 my $self = shift;
123
124 $::conns--; 145 $::conns--;
125
126 $self->eoconn; 146 $self->eoconn;
127 delete $conn{$self->{remote_addr}}{$self*1};
128} 147}
129 148
130# end of connection 149# end of connection
131sub eoconn { 150sub eoconn {
151 my $self = shift;
152
153 # clean up hints
154 delete $conn{$self->{remote_id}}{$self*1};
132 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 155 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
133} 156}
134 157
135sub slog { 158sub slog {
136 my $self = shift; 159 my $self = shift;
137 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 160 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
138} 161}
139 162
140sub response { 163sub response {
141 my ($self, $code, $msg, $hdr, $content) = @_; 164 my ($self, $code, $msg, $hdr, $content) = @_;
142 my $res = "HTTP/1.1 $code $msg\015\012"; 165 my $res = "HTTP/1.1 $code $msg\015\012";
143 166
144 #$res .= "Connection: close\015\012"; 167 $self->{h}{connection} ||= $hdr->{Connection};
145 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 168
169 $res .= "Date: $HTTP_NOW\015\012";
146 170
147 while (my ($h, $v) = each %$hdr) { 171 while (my ($h, $v) = each %$hdr) {
148 $res .= "$h: $v\015\012" 172 $res .= "$h: $v\015\012"
149 } 173 }
150 $res .= "\015\012"; 174 $res .= "\015\012";
151 175
152 $res .= $content if defined $content and $self->{method} ne "HEAD"; 176 $res .= $content if defined $content and $self->{method} ne "HEAD";
153 177
154 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 178 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
179
180 print $accesslog $log if $accesslog;
181 print STDERR $log;
155 182
156 $self->{written} += 183 $self->{written} +=
157 print {$self->{fh}} $res; 184 print {$self->{fh}} $res;
158} 185}
159 186
160sub err { 187sub err {
161 my $self = shift; 188 my $self = shift;
162 my ($code, $msg, $hdr, $content) = @_; 189 my ($code, $msg, $hdr, $content) = @_;
163 190
164 unless (defined $content) { 191 unless (defined $content) {
165 $content = "$code $msg"; 192 $content = "$code $msg\n";
166 $hdr->{"Content-Type"} = "text/plain"; 193 $hdr->{"Content-Type"} = "text/plain";
167 $hdr->{"Content-Length"} = length $content; 194 $hdr->{"Content-Length"} = length $content;
168 } 195 }
169 $hdr->{"Connection"} = "close"; 196 $hdr->{"Connection"} = "close";
170 197
171 $self->response($code, $msg, $hdr, $content); 198 $self->response($code, $msg, $hdr, $content);
172 199
173 die bless {}, err::; 200 die bless {}, err::;
174} 201}
175 202
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 => 20*rand);
182
183 $self->err(401, "too many connections",
184 {
185 "Content-Type" => "text/html",
186 "Retry-After" => $::BLOCKTIME,
187 "Warning" => "Please do NOT retry, you have been blocked",
188 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
189 },
190 <<EOF);
191<html><p>
192You have been blocked because you opened too many connections. You
193may retry at</p>
194
195 <p><blockquote>$time.</blockquote></p>
196
197<p>Until then, each new access will renew the block. You might want to have a
198look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
199</html>
200EOF
201}
202
203sub handle { 203sub handle {
204 my $self = shift; 204 my $self = shift;
205 my $fh = $self->{fh}; 205 my $fh = $self->{fh};
206
207 my $host;
206 208
207 $fh->timeout($::REQ_TIMEOUT); 209 $fh->timeout($::REQ_TIMEOUT);
208 while() { 210 while() {
209 $self->{reqs}++; 211 $self->{reqs}++;
210 212
… …
220 } 222 }
221 223
222 $self->{h} = {}; 224 $self->{h} = {};
223 225
224 $fh->timeout($::RES_TIMEOUT); 226 $fh->timeout($::RES_TIMEOUT);
225 my $ip = $self->{remote_addr};
226
227 if ($blocked{$ip}) {
228 $self->err_blocked($blocked{$ip})
229 if $blocked{$ip} > $::NOW;
230
231 delete $blocked{$ip};
232 }
233
234 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
235 $self->slog(2, "blocked ip $ip");
236 $self->err_blocked;
237 }
238 227
239 $req =~ /^(?:\015\012)? 228 $req =~ /^(?:\015\012)?
240 (GET|HEAD) \040+ 229 (GET|HEAD) \040+
241 ([^\040]+) \040+ 230 ([^\040]+) \040+
242 HTTP\/([0-9]+\.[0-9]+) 231 HTTP\/([0-9]+\.[0-9]+)
… …
267 256
268 $self->{h}{$h} = substr $v, 1 257 $self->{h}{$h} = substr $v, 1
269 while ($h, $v) = each %hdr; 258 while ($h, $v) = each %hdr;
270 } 259 }
271 260
261 # remote id should be unique per user
262 my $id = $self->{remote_addr};
263
264 if (exists $self->{h}{"client-ip"}) {
265 $id .= "[".$self->{h}{"client-ip"}."]";
266 } elsif (exists $self->{h}{"x-forwarded-for"}) {
267 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
268 }
269
270 $self->{remote_id} = $id;
271
272 if ($blocked{$id}) {
273 $self->err_blocked($blocked{$id})
274 if $blocked{$id} > $::NOW;
275
276 delete $blocked{$id};
277 }
278
279 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
280 my $delay = $::PER_TIMEOUT + 15;
281 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
282 if ($delay <= 0) {
283 $self->slog(2, "blocked ip $id");
284 $self->err_blocked;
285 } else {
286 Coro::Event::do_timer(after => 4); $delay -= 4;
287 }
288 }
289 }
290
291 # find out server name and port
292 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
293 $host = $1;
294 } else {
295 $host = $self->{h}{host};
296 }
297
298 if (defined $host) {
272 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 299 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
300 } else {
301 ($self->{server_port}, $host)
302 = unpack_sockaddr_in $self->{fh}->getsockname
303 or $self->err(500, "unable to get socket name");
304 $host = inet_ntoa $host;
305 }
273 306
307 $self->{server_name} = $host;
308
309 # enter ourselves into various lists
310 weaken ($conn{$id}{$self*1} = $self);
274 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 311 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
275 312
276 eval { 313 eval {
277 $self->map_uri; 314 $self->map_uri;
278 $self->respond; 315 $self->respond;
279 }; 316 };
280 317
318 $self->eoconn;
319
281 die if $@ && !ref $@; 320 die if $@ && !ref $@;
282 321
283 $self->eoconn;
284
285 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 322 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
286 323
287 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]");
288 $fh->timeout($::PER_TIMEOUT); 324 $fh->timeout($::PER_TIMEOUT);
289 } 325 }
290} 326}
291 327
292# uri => path mapping 328# uri => path mapping
293sub map_uri { 329sub map_uri {
294 my $self = shift; 330 my $self = shift;
295 my $host = $self->{h}{host} || "default"; 331 my $host = $self->{server_name};
296 my $uri = $self->{uri}; 332 my $uri = $self->{uri};
297 333
298 # some massaging, also makes it more secure 334 # some massaging, also makes it more secure
299 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 335 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
300 $uri =~ s%//+%/%g; 336 $uri =~ s%//+%/%g;
… …
310 $self->{path} = "$::DOCROOT/$host$uri"; 346 $self->{path} = "$::DOCROOT/$host$uri";
311 347
312 $self->access_check; 348 $self->access_check;
313} 349}
314 350
315sub server_address {
316 my $self = shift;
317 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
318 or $self->err(500, "unable to get socket name");
319 ((inet_ntoa $iaddr), $port);
320}
321
322sub server_host {
323 my $self = shift;
324 if (exists $self->{h}{host}) {
325 return $self->{h}{host};
326 } else {
327 return (($self->server_address)[0]);
328 }
329}
330
331sub server_hostport {
332 my $self = shift;
333 my ($host, $port);
334 if (exists $self->{h}{host}) {
335 ($host, $port) = ($self->{h}{host}, $self->{server_port});
336 } else {
337 ($host, $port) = $self->server_address;
338 }
339 $port = $port == 80 ? "" : ":$port";
340 $host.$port;
341}
342
343sub _cgi { 351sub _cgi {
344 my $self = shift; 352 my $self = shift;
345 my $path = shift; 353 my $path = shift;
346 my $fh; 354 my $fh;
347 355
348 # no two-way xxx supported 356 # no two-way xxx supported
349 if (0 == fork) { 357 if (0 == fork) {
350 open STDOUT, ">&".fileno($self->{fh}); 358 open STDOUT, ">&".fileno($self->{fh});
351 if (chdir $::DOCROOT) { 359 if (chdir $::DOCROOT) {
352 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 360 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
353 $ENV{HTTP_HOST} = $self->server_host; 361 $ENV{HTTP_HOST} = $self->{server_name};
354 $ENV{HTTP_PORT} = $self->{server_host}; 362 $ENV{HTTP_PORT} = $self->{server_port};
355 $ENV{SCRIPT_NAME} = $self->{name}; 363 $ENV{SCRIPT_NAME} = $self->{name};
356 exec $path; 364 exec $path;
357 } 365 }
358 Coro::State::_exit(0); 366 Coro::State::_exit(0);
359 } else { 367 } else {
368 die;
360 } 369 }
370}
371
372sub server_hostport {
373 $_[0]{server_port} == 80
374 ? $_[0]{server_name}
375 : "$_[0]{server_name}:$_[0]{server_port}";
361} 376}
362 377
363sub respond { 378sub respond {
364 my $self = shift; 379 my $self = shift;
365 my $path = $self->{path}; 380 my $path = $self->{path};
… …
375 390
376 if (-d _ && -r _) { 391 if (-d _ && -r _) {
377 # directory 392 # directory
378 if ($path !~ /\/$/) { 393 if ($path !~ /\/$/) {
379 # create a redirect to get the trailing "/" 394 # create a redirect to get the trailing "/"
380 my $host = $self->server_hostport; 395 # we don't try to avoid the :80
381 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 396 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
382 } else { 397 } else {
383 $ims < $self->{stat}[9] 398 $ims < $self->{stat}[9]
384 or $self->err(304, "not modified"); 399 or $self->err(304, "not modified");
385 400
386 if (-r "$path/index.html") { 401 if (-r "$path/index.html") {
… …
410 $idx); 425 $idx);
411} 426}
412 427
413sub handle_file { 428sub handle_file {
414 my $self = shift; 429 my $self = shift;
415 my $length = -s _; 430 my $length = $self->{stat}[7];
431 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
416 my $hdr = { 432 my $hdr = {
417 "Last-Modified" => time2str ((stat _)[9]), 433 "Last-Modified" => time2str ((stat _)[9]),
418 }; 434 };
419 435
420 my @code = (200, "ok"); 436 my @code = (200, "ok");
… …
428 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 444 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
429 } else { 445 } else {
430 ($l, $h) = (0, $length - 1); 446 ($l, $h) = (0, $length - 1);
431 goto ignore; 447 goto ignore;
432 } 448 }
433 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 449 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
434 } 450 }
435 $hdr->{"Content-Range"} = "bytes */$length"; 451 $hdr->{"Content-Range"} = "bytes */$length";
436 $hdr->{"Content-Length"} = $length; 452 $hdr->{"Content-Length"} = $length;
437 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
438 $self->err(416, "not satisfiable", $hdr, ""); 453 $self->err(416, "not satisfiable", $hdr, "");
439 454
440satisfiable: 455satisfiable:
441 # check for segmented downloads 456 # check for segmented downloads
442 if ($l && $::NO_SEGMENTED) { 457 if ($l && $::NO_SEGMENTED) {
458 my $delay = $::PER_TIMEOUT + 15;
443 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 459 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
460 if ($delay <= 0) {
461 $self->err_segmented_download;
462 } else {
444 Coro::Event::do_timer(after => 15); 463 Coro::Event::do_timer(after => 4); $delay -= 4;
445 464 }
446 $self->err(400, "segmented downloads are not allowed");
447 } 465 }
448 } 466 }
449 467
450 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 468 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
451 @code = (206, "partial content"); 469 @code = (206, "partial content");
… …
461 $hdr->{"Content-Length"} = $length; 479 $hdr->{"Content-Length"} = $length;
462 480
463 $self->response(@code, $hdr, ""); 481 $self->response(@code, $hdr, "");
464 482
465 if ($self->{method} eq "GET") { 483 if ($self->{method} eq "GET") {
484 $self->{time} = $::NOW;
485
486 my $fudge = $queue->[0]->waiters;
487 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
488
489 $queue->[1] *= $fudge;
490 my $transfer = $queue->[0]->guard;
491
492 if ($fudge != 1) {
493 $queue->[1] /= $fudge;
494 $queue->[1] = $queue->[1] * $::wait_factor
495 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
496 }
497 $self->{time} = $::NOW;
498
499 $self->{fh}->writable or return;
500
466 my ($fh, $buf, $r); 501 my ($fh, $buf, $r);
467 my $current = $Coro::current; 502 my $current = $Coro::current;
468 open $fh, "<", $self->{path} 503 open $fh, "<", $self->{path}
469 or die "$self->{path}: late open failure ($!)"; 504 or die "$self->{path}: late open failure ($!)";
470 505
… …
482 or last; 517 or last;
483 } else { 518 } else {
484 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 519 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
485 $buf, 0, sub { 520 $buf, 0, sub {
486 $r = $_[0]; 521 $r = $_[0];
487 $current->ready; 522 Coro::ready($current);
488 }); 523 });
489 &Coro::schedule; 524 &Coro::schedule;
490 last unless $r; 525 last unless $r;
491 } 526 }
492 my $w = $self->{fh}->syswrite($buf) 527 my $w = syswrite $self->{fh}, $buf
493 or last; 528 or last;
494 $::written += $w; 529 $::written += $w;
495 $self->{written} += $w; 530 $self->{written} += $w;
496 $l += $r; 531 $l += $r;
497 } 532 }
498 }
499 533
500 close $fh; 534 close $fh;
535 }
501} 536}
502 537
5031; 5381;

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