ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/cvsroot/Coro/myhttpd/httpd.pl
(Generate patch)

Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.26 by root, Sun Aug 19 22:59:35 2001 UTC vs.
Revision 1.45 by root, Sun Nov 11 03:32:19 2001 UTC

1use Coro; 1use Coro;
2use Coro::Semaphore; 2use Coro::Semaphore;
3use Coro::Event; 3use Coro::Event;
4use Coro::Socket; 4use Coro::Socket;
5use Coro::Signal;
6
7use HTTP::Date;
5 8
6no utf8; 9no utf8;
7use bytes; 10use bytes;
8 11
9# at least on my machine, this thingy serves files 12# at least on my machine, this thingy serves files
10# quite a bit faster than apache, ;) 13# quite a bit faster than apache, ;)
11# and quite a bit slower than thttpd :( 14# and quite a bit slower than thttpd :(
12 15
13$SIG{PIPE} = 'IGNORE'; 16$SIG{PIPE} = 'IGNORE';
14 17
18our $accesslog;
19
20if ($ACCESS_LOG) {
21 use IO::Handle;
22 open $accesslog, ">>$ACCESS_LOG"
23 or die "$ACCESS_LOG: $!";
24 $accesslog->autoflush(1);
25}
26
15sub slog { 27sub slog {
16 my $level = shift; 28 my $level = shift;
17 my $format = shift; 29 my $format = shift;
18 printf "---: $format\n", @_; 30 printf "---: $format\n", @_;
19} 31}
20 32
21my $connections = new Coro::Semaphore $MAX_CONNECTS; 33our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
34our $httpevent = new Coro::Signal;
35
36our $wait_factor = 0.95;
37
38our @transfers = (
39 [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1],
40 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1],
41);
22 42
23my @newcons; 43my @newcons;
24my @pool; 44my @pool;
25 45
26# one "execution thread" 46# one "execution thread"
27sub handler { 47sub handler {
28 while () { 48 while () {
29 my $new = pop @newcons;
30 if ($new) { 49 if (@newcons) {
31 eval { 50 eval {
32 conn->new(@$new)->handle; 51 conn->new(@{pop @newcons})->handle;
33 }; 52 };
34 slog 1, "$@" if $@ && !ref $@; 53 slog 1, "$@" if $@ && !ref $@;
35 $connections->up; 54 $connections->up;
36 } else { 55 } else {
37 last if @pool >= $MAX_POOL; 56 last if @pool >= $MAX_POOL;
… …
39 schedule; 58 schedule;
40 } 59 }
41 } 60 }
42} 61}
43 62
63sub listen_on {
64 my $listen = $_[0];
65
66 push @listen_sockets, $listen;
67
68 # the "main thread"
69 async {
70 slog 1, "accepting connections";
71 while () {
72 $connections->down;
73 push @newcons, [$listen->accept];
74 #slog 3, "accepted @$connections ".scalar(@pool);
75 if (@pool) {
76 (pop @pool)->ready;
77 } else {
78 async \&handler;
79 }
80
81 }
82 };
83}
84
44my $http_port = new Coro::Socket 85my $http_port = new Coro::Socket
45 LocalAddr => $SERVER_HOST, 86 LocalAddr => $SERVER_HOST,
46 LocalPort => $SERVER_PORT, 87 LocalPort => $SERVER_PORT,
47 ReuseAddr => 1, 88 ReuseAddr => 1,
48 Listen => 50, 89 Listen => 50,
49 or die "unable to start server"; 90 or die "unable to start server";
50 91
51push @listen_sockets, $http_port; 92listen_on $http_port;
52 93
53# the "main thread" 94if ($SERVER_PORT2) {
54async { 95 my $http_port = new Coro::Socket
55 slog 1, "accepting connections"; 96 LocalAddr => $SERVER_HOST,
56 while () { 97 LocalPort => $SERVER_PORT2,
57 $connections->down; 98 ReuseAddr => 1,
58 push @newcons, [$http_port->accept]; 99 Listen => 50,
59 #slog 3, "accepted @$connections ".scalar(@pool); 100 or die "unable to start server";
101
102 listen_on $http_port;
103}
104
105our $NOW;
106our $HTTP_NOW;
107
108Event->timer(interval => 1, hard => 1, cb => sub {
60 $::NOW = time; 109 $NOW = time;
61 if (@pool) { 110 $HTTP_NOW = time2str $NOW;
62 (pop @pool)->ready; 111})->now;
63 } else {
64 async \&handler;
65 }
66
67 }
68};
69 112
70package conn; 113package conn;
71 114
72use Socket; 115use Socket;
73use HTTP::Date; 116use HTTP::Date;
… …
100 143
101read_mimetypes; 144read_mimetypes;
102 145
103sub new { 146sub new {
104 my $class = shift; 147 my $class = shift;
148 my $fh = shift;
105 my $peername = shift; 149 my $peername = shift;
106 my $fh = shift;
107 my $self = bless { fh => $fh }, $class; 150 my $self = bless { fh => $fh }, $class;
108 my (undef, $iaddr) = unpack_sockaddr_in $peername 151 my (undef, $iaddr) = unpack_sockaddr_in $peername
109 or $self->err(500, "unable to decode peername"); 152 or $self->err(500, "unable to decode peername");
110 153
111 $self->{remote_addr} = inet_ntoa $iaddr; 154 $self->{remote_addr} = inet_ntoa $iaddr;
112 $self->{time} = $::NOW; 155 $self->{time} = $::NOW;
113 156
114 # enter ourselves into various lists
115 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
116
117 $::conns++; 157 $::conns++;
118 158
119 $self; 159 $self;
120} 160}
121 161
122sub DESTROY { 162sub DESTROY {
123 my $self = shift; 163 my $self = shift;
124
125 $::conns--; 164 $::conns--;
126
127 $self->eoconn; 165 $self->eoconn;
128 delete $conn{$self->{remote_addr}}{$self*1};
129} 166}
130 167
131# end of connection 168# end of connection
132sub eoconn { 169sub eoconn {
133 my $self = shift; 170 my $self = shift;
171
172 # clean up hints
173 delete $conn{$self->{remote_id}}{$self*1};
134 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 174 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
175
176 $httpevent->broadcast;
135} 177}
136 178
137sub slog { 179sub slog {
138 my $self = shift; 180 my $self = shift;
139 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 181 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
140} 182}
141 183
142sub response { 184sub response {
143 my ($self, $code, $msg, $hdr, $content) = @_; 185 my ($self, $code, $msg, $hdr, $content) = @_;
144 my $res = "HTTP/1.1 $code $msg\015\012"; 186 my $res = "HTTP/1.1 $code $msg\015\012";
145 187
146 #$res .= "Connection: close\015\012"; 188 $self->{h}{connection} = "close"
147 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 189 if exists $hdr->{Connection} # to avoid "empty" header lines due to vivification
190 and $hdr->{Connection} =~ /close/;
191
192 $res .= "Date: $HTTP_NOW\015\012";
148 193
149 while (my ($h, $v) = each %$hdr) { 194 while (my ($h, $v) = each %$hdr) {
150 $res .= "$h: $v\015\012" 195 $res .= "$h: $v\015\012"
151 } 196 }
152 $res .= "\015\012"; 197 $res .= "\015\012";
153 198
154 $res .= $content if defined $content and $self->{method} ne "HEAD"; 199 $res .= $content if defined $content and $self->{method} ne "HEAD";
155 200
156 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 201 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
202
203 print $accesslog $log if $accesslog;
204 print STDERR $log;
157 205
158 $self->{written} += 206 $self->{written} +=
159 print {$self->{fh}} $res; 207 print {$self->{fh}} $res;
160} 208}
161 209
162sub err { 210sub err {
163 my $self = shift; 211 my $self = shift;
164 my ($code, $msg, $hdr, $content) = @_; 212 my ($code, $msg, $hdr, $content) = @_;
165 213
166 unless (defined $content) { 214 unless (defined $content) {
167 $content = "$code $msg"; 215 $content = "$code $msg\n";
168 $hdr->{"Content-Type"} = "text/plain"; 216 $hdr->{"Content-Type"} = "text/plain";
169 $hdr->{"Content-Length"} = length $content; 217 $hdr->{"Content-Length"} = length $content;
170 } 218 }
171 $hdr->{"Connection"} = "close"; 219 $hdr->{"Connection"} = "close";
172 220
173 $self->response($code, $msg, $hdr, $content); 221 $self->response($code, $msg, $hdr, $content);
174 222
175 die bless {}, err::; 223 die bless {}, err::;
176} 224}
177 225
178sub err_blocked {
179 my $self = shift;
180 my $ip = $self->{remote_addr};
181 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
182
183 Coro::Event::do_timer(after => 20*rand);
184
185 $self->err(401, "too many connections",
186 {
187 "Content-Type" => "text/html",
188 "Retry-After" => $::BLOCKTIME,
189 "Warning" => "Please do NOT retry, you have been blocked",
190 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
191 },
192 <<EOF);
193<html><p>
194You have been blocked because you opened too many connections. You
195may retry at</p>
196
197 <p><blockquote>$time.</blockquote></p>
198
199<p>Until then, each new access will renew the block. You might want to have a
200look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
201</html>
202EOF
203}
204
205sub handle { 226sub handle {
206 my $self = shift; 227 my $self = shift;
207 my $fh = $self->{fh}; 228 my $fh = $self->{fh};
229
230 my $host;
208 231
209 $fh->timeout($::REQ_TIMEOUT); 232 $fh->timeout($::REQ_TIMEOUT);
210 while() { 233 while() {
211 $self->{reqs}++; 234 $self->{reqs}++;
212 235
… …
222 } 245 }
223 246
224 $self->{h} = {}; 247 $self->{h} = {};
225 248
226 $fh->timeout($::RES_TIMEOUT); 249 $fh->timeout($::RES_TIMEOUT);
227 my $ip = $self->{remote_addr};
228
229 if ($blocked{$ip}) {
230 $self->err_blocked($blocked{$ip})
231 if $blocked{$ip} > $::NOW;
232
233 delete $blocked{$ip};
234 }
235
236 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
237 $self->slog(2, "blocked ip $ip");
238 $self->err_blocked;
239 }
240 250
241 $req =~ /^(?:\015\012)? 251 $req =~ /^(?:\015\012)?
242 (GET|HEAD) \040+ 252 (GET|HEAD) \040+
243 ([^\040]+) \040+ 253 ([^\040]+) \040+
244 HTTP\/([0-9]+\.[0-9]+) 254 HTTP\/([0-9]+\.[0-9]+)
… …
269 279
270 $self->{h}{$h} = substr $v, 1 280 $self->{h}{$h} = substr $v, 1
271 while ($h, $v) = each %hdr; 281 while ($h, $v) = each %hdr;
272 } 282 }
273 283
284 # remote id should be unique per user
285 my $id = $self->{remote_addr};
286
287 if (exists $self->{h}{"client-ip"}) {
288 $id .= "[".$self->{h}{"client-ip"}."]";
289 } elsif (exists $self->{h}{"x-forwarded-for"}) {
290 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
291 }
292
293 $self->{remote_id} = $id;
294
295 if ($blocked{$id}) {
296 $self->err_blocked($blocked{$id})
297 if $blocked{$id} > $::NOW;
298
299 delete $blocked{$id};
300 }
301
302 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
303 my $delay = $::PER_TIMEOUT + $::NOW + 15;
304 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
305 if ($delay < $::NOW) {
306 $self->slog(2, "blocked ip $id");
307 $self->err_blocked;
308 } else {
309 $httpevent->wait;
310 }
311 }
312 }
313
314 # find out server name and port
315 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
316 $host = $1;
317 } else {
318 $host = $self->{h}{host};
319 }
320
321 if (defined $host) {
274 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 322 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
323 } else {
324 ($self->{server_port}, $host)
325 = unpack_sockaddr_in $self->{fh}->sockname
326 or $self->err(500, "unable to get socket name");
327 $host = inet_ntoa $host;
328 }
275 329
330 $self->{server_name} = $host;
331
332 # enter ourselves into various lists
333 weaken ($conn{$id}{$self*1} = $self);
276 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 334 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
277 335
278 eval { 336 eval {
279 $self->map_uri; 337 $self->map_uri;
280 $self->respond; 338 $self->respond;
281 }; 339 };
282 340
283 $self->eoconn; 341 $self->eoconn;
284 342
285 die if $@ && !ref $@; 343 die if $@ && !ref $@;
286 344
287 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 345 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
288 346
289 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]"); 347 $httpevent->broadcast;
348
290 $fh->timeout($::PER_TIMEOUT); 349 $fh->timeout($::PER_TIMEOUT);
291 } 350 }
292} 351}
293 352
294# uri => path mapping 353# uri => path mapping
295sub map_uri { 354sub map_uri {
296 my $self = shift; 355 my $self = shift;
297 my $host = $self->{h}{host} || "default"; 356 my $host = $self->{server_name};
298 my $uri = $self->{uri}; 357 my $uri = $self->{uri};
299 358
300 # some massaging, also makes it more secure 359 # some massaging, also makes it more secure
301 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 360 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
302 $uri =~ s%//+%/%g; 361 $uri =~ s%//+%/%g;
… …
312 $self->{path} = "$::DOCROOT/$host$uri"; 371 $self->{path} = "$::DOCROOT/$host$uri";
313 372
314 $self->access_check; 373 $self->access_check;
315} 374}
316 375
317sub server_address {
318 my $self = shift;
319 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
320 or $self->err(500, "unable to get socket name");
321 ((inet_ntoa $iaddr), $port);
322}
323
324sub server_host {
325 my $self = shift;
326 if (exists $self->{h}{host}) {
327 return $self->{h}{host};
328 } else {
329 return (($self->server_address)[0]);
330 }
331}
332
333sub server_hostport {
334 my $self = shift;
335 my ($host, $port);
336 if (exists $self->{h}{host}) {
337 ($host, $port) = ($self->{h}{host}, $self->{server_port});
338 } else {
339 ($host, $port) = $self->server_address;
340 }
341 $port = $port == 80 ? "" : ":$port";
342 $host.$port;
343}
344
345sub _cgi { 376sub _cgi {
346 my $self = shift; 377 my $self = shift;
347 my $path = shift; 378 my $path = shift;
348 my $fh; 379 my $fh;
349 380
350 # no two-way xxx supported 381 # no two-way xxx supported
351 if (0 == fork) { 382 if (0 == fork) {
352 open STDOUT, ">&".fileno($self->{fh}); 383 open STDOUT, ">&".fileno($self->{fh});
353 if (chdir $::DOCROOT) { 384 if (chdir $::DOCROOT) {
354 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 385 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
355 $ENV{HTTP_HOST} = $self->server_host; 386 $ENV{HTTP_HOST} = $self->{server_name};
356 $ENV{HTTP_PORT} = $self->{server_host}; 387 $ENV{HTTP_PORT} = $self->{server_port};
357 $ENV{SCRIPT_NAME} = $self->{name}; 388 $ENV{SCRIPT_NAME} = $self->{name};
358 exec $path; 389 exec $path;
359 } 390 }
360 Coro::State::_exit(0); 391 Coro::State::_exit(0);
361 } else { 392 } else {
393 die;
362 } 394 }
395}
396
397sub server_hostport {
398 $_[0]{server_port} == 80
399 ? $_[0]{server_name}
400 : "$_[0]{server_name}:$_[0]{server_port}";
363} 401}
364 402
365sub respond { 403sub respond {
366 my $self = shift; 404 my $self = shift;
367 my $path = $self->{path}; 405 my $path = $self->{path};
… …
377 415
378 if (-d _ && -r _) { 416 if (-d _ && -r _) {
379 # directory 417 # directory
380 if ($path !~ /\/$/) { 418 if ($path !~ /\/$/) {
381 # create a redirect to get the trailing "/" 419 # create a redirect to get the trailing "/"
382 my $host = $self->server_hostport; 420 # we don't try to avoid the :80
383 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 421 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
384 } else { 422 } else {
385 $ims < $self->{stat}[9] 423 $ims < $self->{stat}[9]
386 or $self->err(304, "not modified"); 424 or $self->err(304, "not modified");
387 425
388 if (-r "$path/index.html") { 426 if (-r "$path/index.html") {
389 $self->{path} .= "/index.html"; 427 # replace directory "size" by index.html filesize
428 $self->{stat}[7] = (stat ($self->{path} .= "/index.html"))[7];
390 $self->handle_file; 429 $self->handle_file;
391 } else { 430 } else {
392 $self->handle_dir; 431 $self->handle_dir;
393 } 432 }
394 } 433 }
… …
412 $idx); 451 $idx);
413} 452}
414 453
415sub handle_file { 454sub handle_file {
416 my $self = shift; 455 my $self = shift;
417 my $length = -s _; 456 my $length = $self->{stat}[7];
457 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
418 my $hdr = { 458 my $hdr = {
419 "Last-Modified" => time2str ((stat _)[9]), 459 "Last-Modified" => time2str ((stat _)[9]),
420 }; 460 };
421 461
422 my @code = (200, "ok"); 462 my @code = (200, "ok");
… …
434 } 474 }
435 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; 475 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
436 } 476 }
437 $hdr->{"Content-Range"} = "bytes */$length"; 477 $hdr->{"Content-Range"} = "bytes */$length";
438 $hdr->{"Content-Length"} = $length; 478 $hdr->{"Content-Length"} = $length;
439 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
440 $self->err(416, "not satisfiable", $hdr, ""); 479 $self->err(416, "not satisfiable", $hdr, "");
441 480
442satisfiable: 481satisfiable:
443 # check for segmented downloads 482 # check for segmented downloads
444 if ($l && $::NO_SEGMENTED) { 483 if ($l && $::NO_SEGMENTED) {
484 my $delay = $::NOW + $::PER_TIMEOUT + 15;
445 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 485 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
446 $self->err(400, "segmented downloads are not allowed"); 486 if ($delay <= $::NOW) {
487 $self->err_segmented_download;
488 } else {
489 $httpevent->broadcast;
490 }
447 } 491 }
448 } 492 }
449 493
450 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 494 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
451 @code = (206, "partial content"); 495 @code = (206, "partial content");
… …
461 $hdr->{"Content-Length"} = $length; 505 $hdr->{"Content-Length"} = $length;
462 506
463 $self->response(@code, $hdr, ""); 507 $self->response(@code, $hdr, "");
464 508
465 if ($self->{method} eq "GET") { 509 if ($self->{method} eq "GET") {
510 $self->{time} = $::NOW;
511
512 my $fudge = $queue->[0]->waiters;
513 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
514
515 $queue->[1] *= $fudge;
516 my $transfer = $queue->[0]->guard;
517
518 if ($fudge != 1) {
519 $queue->[1] /= $fudge;
520 $queue->[1] = $queue->[1] * $::wait_factor
521 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
522 }
523 $self->{time} = $::NOW;
524
525 $self->{fh}->writable or return;
526
466 my ($fh, $buf, $r); 527 my ($fh, $buf, $r);
467 my $current = $Coro::current; 528 my $current = $Coro::current;
468 open $fh, "<", $self->{path} 529 open $fh, "<", $self->{path}
469 or die "$self->{path}: late open failure ($!)"; 530 or die "$self->{path}: late open failure ($!)";
470 531
… …
482 or last; 543 or last;
483 } else { 544 } else {
484 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 545 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
485 $buf, 0, sub { 546 $buf, 0, sub {
486 $r = $_[0]; 547 $r = $_[0];
487 $current->ready; 548 Coro::ready($current);
488 }); 549 });
489 &Coro::schedule; 550 &Coro::schedule;
490 last unless $r; 551 last unless $r;
491 } 552 }
492 my $w = $self->{fh}->syswrite($buf) 553 my $w = syswrite $self->{fh}, $buf
493 or last; 554 or last;
494 $::written += $w; 555 $::written += $w;
495 $self->{written} += $w; 556 $self->{written} += $w;
496 $l += $r; 557 $l += $r;
497 } 558 }
498 }
499 559
500 close $fh; 560 close $fh;
561 }
501} 562}
502 563
5031; 5641;

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines