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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.26 by root, Sun Aug 19 22:59:35 2001 UTC vs.
Revision 1.46 by root, Sat Nov 17 04:15:23 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 if (exists $hdr->{Connection}) {
147 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 189 if ($hdr->{Connection} =~ /close/) {
190 $self->{h}{connection} = "close"
191 }
192 } else {
193 if ($self->{version} < 1.1) {
194 if ($self->{h}{connection} =~ /keep-alive/i) {
195 $hdr->{Connection} = "Keep-Alive";
196 } else {
197 $self->{h}{connection} = "close"
198 }
199 }
200 }
201
202 $res .= "Date: $HTTP_NOW\015\012";
148 203
149 while (my ($h, $v) = each %$hdr) { 204 while (my ($h, $v) = each %$hdr) {
150 $res .= "$h: $v\015\012" 205 $res .= "$h: $v\015\012"
151 } 206 }
152 $res .= "\015\012"; 207 $res .= "\015\012";
153 208
154 $res .= $content if defined $content and $self->{method} ne "HEAD"; 209 $res .= $content if defined $content and $self->{method} ne "HEAD";
155 210
156 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 211 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
212
213 print $accesslog $log if $accesslog;
214 print STDERR $log;
157 215
158 $self->{written} += 216 $self->{written} +=
159 print {$self->{fh}} $res; 217 print {$self->{fh}} $res;
160} 218}
161 219
162sub err { 220sub err {
163 my $self = shift; 221 my $self = shift;
164 my ($code, $msg, $hdr, $content) = @_; 222 my ($code, $msg, $hdr, $content) = @_;
165 223
166 unless (defined $content) { 224 unless (defined $content) {
167 $content = "$code $msg"; 225 $content = "$code $msg\n";
168 $hdr->{"Content-Type"} = "text/plain"; 226 $hdr->{"Content-Type"} = "text/plain";
169 $hdr->{"Content-Length"} = length $content; 227 $hdr->{"Content-Length"} = length $content;
170 } 228 }
171 $hdr->{"Connection"} = "close"; 229 $hdr->{"Connection"} = "close";
172 230
173 $self->response($code, $msg, $hdr, $content); 231 $self->response($code, $msg, $hdr, $content);
174 232
175 die bless {}, err::; 233 die bless {}, err::;
176} 234}
177 235
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 { 236sub handle {
206 my $self = shift; 237 my $self = shift;
207 my $fh = $self->{fh}; 238 my $fh = $self->{fh};
239
240 my $host;
208 241
209 $fh->timeout($::REQ_TIMEOUT); 242 $fh->timeout($::REQ_TIMEOUT);
210 while() { 243 while() {
211 $self->{reqs}++; 244 $self->{reqs}++;
212 245
… …
222 } 255 }
223 256
224 $self->{h} = {}; 257 $self->{h} = {};
225 258
226 $fh->timeout($::RES_TIMEOUT); 259 $fh->timeout($::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 }
240 260
241 $req =~ /^(?:\015\012)? 261 $req =~ /^(?:\015\012)?
242 (GET|HEAD) \040+ 262 (GET|HEAD) \040+
243 ([^\040]+) \040+ 263 ([^\040]+) \040+
244 HTTP\/([0-9]+\.[0-9]+) 264 HTTP\/([0-9]+\.[0-9]+)
… …
269 289
270 $self->{h}{$h} = substr $v, 1 290 $self->{h}{$h} = substr $v, 1
271 while ($h, $v) = each %hdr; 291 while ($h, $v) = each %hdr;
272 } 292 }
273 293
294 # remote id should be unique per user
295 my $id = $self->{remote_addr};
296
297 if (exists $self->{h}{"client-ip"}) {
298 $id .= "[".$self->{h}{"client-ip"}."]";
299 } elsif (exists $self->{h}{"x-forwarded-for"}) {
300 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
301 }
302
303 $self->{remote_id} = $id;
304
305 if ($blocked{$id}) {
306 $self->err_blocked($blocked{$id})
307 if $blocked{$id} > $::NOW;
308
309 delete $blocked{$id};
310 }
311
312 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
313 my $delay = $::PER_TIMEOUT + $::NOW + 15;
314 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
315 if ($delay < $::NOW) {
316 $self->slog(2, "blocked ip $id");
317 $self->err_blocked;
318 } else {
319 $httpevent->wait;
320 }
321 }
322 }
323
324 # find out server name and port
325 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
326 $host = $1;
327 } else {
328 $host = $self->{h}{host};
329 }
330
331 if (defined $host) {
274 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 332 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
333 } else {
334 ($self->{server_port}, $host)
335 = unpack_sockaddr_in $self->{fh}->sockname
336 or $self->err(500, "unable to get socket name");
337 $host = inet_ntoa $host;
338 }
275 339
340 $self->{server_name} = $host;
341
342 # enter ourselves into various lists
343 weaken ($conn{$id}{$self*1} = $self);
276 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 344 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
277 345
278 eval { 346 eval {
279 $self->map_uri; 347 $self->map_uri;
280 $self->respond; 348 $self->respond;
281 }; 349 };
282 350
283 $self->eoconn; 351 $self->eoconn;
284 352
285 die if $@ && !ref $@; 353 die if $@ && !ref $@;
286 354
287 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 355 last if $self->{h}{connection} =~ /close/;
288 356
289 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]"); 357 $httpevent->broadcast;
358
290 $fh->timeout($::PER_TIMEOUT); 359 $fh->timeout($::PER_TIMEOUT);
291 } 360 }
292} 361}
293 362
294# uri => path mapping 363# uri => path mapping
295sub map_uri { 364sub map_uri {
296 my $self = shift; 365 my $self = shift;
297 my $host = $self->{h}{host} || "default"; 366 my $host = $self->{server_name};
298 my $uri = $self->{uri}; 367 my $uri = $self->{uri};
299 368
300 # some massaging, also makes it more secure 369 # some massaging, also makes it more secure
301 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 370 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
302 $uri =~ s%//+%/%g; 371 $uri =~ s%//+%/%g;
… …
312 $self->{path} = "$::DOCROOT/$host$uri"; 381 $self->{path} = "$::DOCROOT/$host$uri";
313 382
314 $self->access_check; 383 $self->access_check;
315} 384}
316 385
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 { 386sub _cgi {
346 my $self = shift; 387 my $self = shift;
347 my $path = shift; 388 my $path = shift;
348 my $fh; 389 my $fh;
349 390
350 # no two-way xxx supported 391 # no two-way xxx supported
351 if (0 == fork) { 392 if (0 == fork) {
352 open STDOUT, ">&".fileno($self->{fh}); 393 open STDOUT, ">&".fileno($self->{fh});
353 if (chdir $::DOCROOT) { 394 if (chdir $::DOCROOT) {
354 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 395 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
355 $ENV{HTTP_HOST} = $self->server_host; 396 $ENV{HTTP_HOST} = $self->{server_name};
356 $ENV{HTTP_PORT} = $self->{server_host}; 397 $ENV{HTTP_PORT} = $self->{server_port};
357 $ENV{SCRIPT_NAME} = $self->{name}; 398 $ENV{SCRIPT_NAME} = $self->{name};
358 exec $path; 399 exec $path;
359 } 400 }
360 Coro::State::_exit(0); 401 Coro::State::_exit(0);
361 } else { 402 } else {
403 die;
362 } 404 }
405}
406
407sub server_hostport {
408 $_[0]{server_port} == 80
409 ? $_[0]{server_name}
410 : "$_[0]{server_name}:$_[0]{server_port}";
363} 411}
364 412
365sub respond { 413sub respond {
366 my $self = shift; 414 my $self = shift;
367 my $path = $self->{path}; 415 my $path = $self->{path};
… …
377 425
378 if (-d _ && -r _) { 426 if (-d _ && -r _) {
379 # directory 427 # directory
380 if ($path !~ /\/$/) { 428 if ($path !~ /\/$/) {
381 # create a redirect to get the trailing "/" 429 # create a redirect to get the trailing "/"
382 my $host = $self->server_hostport; 430 # we don't try to avoid the :80
383 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 431 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
384 } else { 432 } else {
385 $ims < $self->{stat}[9] 433 $ims < $self->{stat}[9]
386 or $self->err(304, "not modified"); 434 or $self->err(304, "not modified");
387 435
388 if (-r "$path/index.html") { 436 if (-r "$path/index.html") {
389 $self->{path} .= "/index.html"; 437 # replace directory "size" by index.html filesize
438 $self->{stat}[7] = (stat ($self->{path} .= "/index.html"))[7];
390 $self->handle_file; 439 $self->handle_file;
391 } else { 440 } else {
392 $self->handle_dir; 441 $self->handle_dir;
393 } 442 }
394 } 443 }
… …
412 $idx); 461 $idx);
413} 462}
414 463
415sub handle_file { 464sub handle_file {
416 my $self = shift; 465 my $self = shift;
417 my $length = -s _; 466 my $length = $self->{stat}[7];
467 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
418 my $hdr = { 468 my $hdr = {
419 "Last-Modified" => time2str ((stat _)[9]), 469 "Last-Modified" => time2str ((stat _)[9]),
420 }; 470 };
421 471
422 my @code = (200, "ok"); 472 my @code = (200, "ok");
… …
434 } 484 }
435 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; 485 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
436 } 486 }
437 $hdr->{"Content-Range"} = "bytes */$length"; 487 $hdr->{"Content-Range"} = "bytes */$length";
438 $hdr->{"Content-Length"} = $length; 488 $hdr->{"Content-Length"} = $length;
439 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
440 $self->err(416, "not satisfiable", $hdr, ""); 489 $self->err(416, "not satisfiable", $hdr, "");
441 490
442satisfiable: 491satisfiable:
443 # check for segmented downloads 492 # check for segmented downloads
444 if ($l && $::NO_SEGMENTED) { 493 if ($l && $::NO_SEGMENTED) {
494 my $delay = $::NOW + $::PER_TIMEOUT + 15;
445 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 495 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
446 $self->err(400, "segmented downloads are not allowed"); 496 if ($delay <= $::NOW) {
497 $self->err_segmented_download;
498 } else {
499 $httpevent->wait;
500 }
447 } 501 }
448 } 502 }
449 503
450 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 504 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
451 @code = (206, "partial content"); 505 @code = (206, "partial content");
… …
461 $hdr->{"Content-Length"} = $length; 515 $hdr->{"Content-Length"} = $length;
462 516
463 $self->response(@code, $hdr, ""); 517 $self->response(@code, $hdr, "");
464 518
465 if ($self->{method} eq "GET") { 519 if ($self->{method} eq "GET") {
520 $self->{time} = $::NOW;
521
522 my $fudge = $queue->[0]->waiters;
523 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
524
525 $queue->[1] *= $fudge;
526 my $transfer = $queue->[0]->guard;
527
528 if ($fudge != 1) {
529 $queue->[1] /= $fudge;
530 $queue->[1] = $queue->[1] * $::wait_factor
531 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
532 }
533 $self->{time} = $::NOW;
534
535 $self->{fh}->writable or return;
536
466 my ($fh, $buf, $r); 537 my ($fh, $buf, $r);
467 my $current = $Coro::current; 538 my $current = $Coro::current;
468 open $fh, "<", $self->{path} 539 open $fh, "<", $self->{path}
469 or die "$self->{path}: late open failure ($!)"; 540 or die "$self->{path}: late open failure ($!)";
470 541
… …
482 or last; 553 or last;
483 } else { 554 } else {
484 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 555 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
485 $buf, 0, sub { 556 $buf, 0, sub {
486 $r = $_[0]; 557 $r = $_[0];
487 $current->ready; 558 Coro::ready($current);
488 }); 559 });
489 &Coro::schedule; 560 &Coro::schedule;
490 last unless $r; 561 last unless $r;
491 } 562 }
492 my $w = $self->{fh}->syswrite($buf) 563 my $w = syswrite $self->{fh}, $buf
493 or last; 564 or last;
494 $::written += $w; 565 $::written += $w;
495 $self->{written} += $w; 566 $self->{written} += $w;
496 $l += $r; 567 $l += $r;
497 } 568 }
498 }
499 569
500 close $fh; 570 close $fh;
571 }
501} 572}
502 573
5031; 5741;

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