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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.10 by root, Sat Aug 11 16:34:47 2001 UTC vs.
Revision 1.34 by root, Thu Aug 30 02:58:17 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), 600],
38 [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 600],
39);
22 40
23my @newcons; 41my @newcons;
24my @pool; 42my @pool;
25 43
26# one "execution thread" 44# one "execution thread"
… …
43 61
44my $http_port = new Coro::Socket 62my $http_port = new Coro::Socket
45 LocalAddr => $SERVER_HOST, 63 LocalAddr => $SERVER_HOST,
46 LocalPort => $SERVER_PORT, 64 LocalPort => $SERVER_PORT,
47 ReuseAddr => 1, 65 ReuseAddr => 1,
48 Listen => 1, 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;
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;
52 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 }
… …
70package conn; 95package conn;
71 96
72use Socket; 97use Socket;
73use HTTP::Date; 98use HTTP::Date;
74use Convert::Scalar 'weaken'; 99use Convert::Scalar 'weaken';
100use Linux::AIO;
75 101
102Linux::AIO::min_parallel $::AIO_PARALLEL;
103
104my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4;
105
106Event->io(fd => Linux::AIO::poll_fileno,
107 poll => 'r', async => 1,
108 cb => \&Linux::AIO::poll_cb);
109
76our %conn; # $conn{ip}{fh} => connobj 110our %conn; # $conn{ip}{self} => connobj
111our %uri; # $uri{ip}{uri}{self}
77our %blocked; 112our %blocked;
78our %mimetype; 113our %mimetype;
79 114
80sub read_mimetypes { 115sub read_mimetypes {
81 local *M; 116 local *M;
… …
99 my $self = bless { fh => $fh }, $class; 134 my $self = bless { fh => $fh }, $class;
100 my (undef, $iaddr) = unpack_sockaddr_in $peername 135 my (undef, $iaddr) = unpack_sockaddr_in $peername
101 or $self->err(500, "unable to decode peername"); 136 or $self->err(500, "unable to decode peername");
102 137
103 $self->{remote_addr} = inet_ntoa $iaddr; 138 $self->{remote_addr} = inet_ntoa $iaddr;
139 $self->{time} = $::NOW;
104 140
105 # enter ourselves into various lists 141 # enter ourselves into various lists
106 weaken ($conn{$self->{remote_addr}}{$self*1} = $self); 142 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
107 143
144 $::conns++;
145
108 $self; 146 $self;
109} 147}
110 148
111sub DESTROY { 149sub DESTROY {
112 my $self = shift; 150 my $self = shift;
151
152 $::conns--;
153
154 $self->eoconn;
113 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;
114 delete $uri{$self->{uri}}{$self*1}; 161 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1};
115} 162}
116 163
117sub slog { 164sub slog {
118 my $self = shift; 165 my $self = shift;
119 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 166 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
120} 167}
121 168
122sub response { 169sub response {
123 my ($self, $code, $msg, $hdr, $content) = @_; 170 my ($self, $code, $msg, $hdr, $content) = @_;
124 my $res = "HTTP/1.0 $code $msg\015\012"; 171 my $res = "HTTP/1.1 $code $msg\015\012";
125 172
126 $res .= "Connection: close\015\012"; 173 $self->{h}{connection} ||= $hdr->{Connection};
127 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 174
175 $res .= "Date: $HTTP_NOW\015\012";
128 176
129 while (my ($h, $v) = each %$hdr) { 177 while (my ($h, $v) = each %$hdr) {
130 $res .= "$h: $v\015\012" 178 $res .= "$h: $v\015\012"
131 } 179 }
132 $res .= "\015\012"; 180 $res .= "\015\012";
133 181
134 $res .= $content if defined $content and $self->{method} eq "GET"; 182 $res .= $content if defined $content and $self->{method} ne "HEAD";
135 183
136 print STDERR "$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";
137 185
186 print $accesslog $log if $accesslog;
187 print STDERR $log;
188
189 $self->{written} +=
138 print {$self->{fh}} $res; 190 print {$self->{fh}} $res;
139} 191}
140 192
141sub err { 193sub err {
142 my $self = shift; 194 my $self = shift;
143 my ($code, $msg, $hdr, $content) = @_; 195 my ($code, $msg, $hdr, $content) = @_;
… …
145 unless (defined $content) { 197 unless (defined $content) {
146 $content = "$code $msg"; 198 $content = "$code $msg";
147 $hdr->{"Content-Type"} = "text/plain"; 199 $hdr->{"Content-Type"} = "text/plain";
148 $hdr->{"Content-Length"} = length $content; 200 $hdr->{"Content-Length"} = length $content;
149 } 201 }
202 $hdr->{"Connection"} = "close";
150 203
151 $self->response($code, $msg, $hdr, $content); 204 $self->response($code, $msg, $hdr, $content);
152 205
153 die bless {}, err::; 206 die bless {}, err::;
154} 207}
155 208
156sub err_blocked {
157 my $self = shift;
158 my $ip = $self->{remote_addr};
159 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
160
161 Coro::Event::do_timer(after => 5);
162
163 $self->err(403, "too many connections",
164 {
165 "Content-Type" => "text/html",
166 "Retry-After" => $::BLOCKTIME
167 },
168 <<EOF);
169<html><p>
170You have been blocked because you opened too many connections. You
171may retry at</p>
172
173 <p><blockquote>$time.</blockquote></p>
174
175<p>Until then, each new access will renew the block. You might want to have a
176look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
177</html>
178EOF
179}
180
181sub handle { 209sub handle {
182 my $self = shift; 210 my $self = shift;
183 my $fh = $self->{fh}; 211 my $fh = $self->{fh};
184 212
213 my $host;
214
215 $fh->timeout($::REQ_TIMEOUT);
185 #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
186 $self->{h} = {}; 230 $self->{h} = {};
187 231
188 # read request and parse first line
189 $fh->timeout($::REQ_TIMEOUT);
190 my $req = $fh->readline("\015\012\015\012");
191 $fh->timeout($::RES_TIMEOUT); 232 $fh->timeout($::RES_TIMEOUT);
192
193 defined $req or
194 $self->err(408, "request timeout");
195
196 my $ip = $self->{remote_addr}; 233 my $ip = $self->{remote_addr};
197 234
198 if ($blocked{$ip}) { 235 if ($blocked{$ip}) {
199 $self->err_blocked($blocked{$ip}) 236 $self->err_blocked($blocked{$ip})
200 if $blocked{$ip} > $::NOW; 237 if $blocked{$ip} > $::NOW;
201 238
202 delete $blocked{$ip}; 239 delete $blocked{$ip};
203 } 240 }
204 241
205 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) {
206 $self->slog("blocked ip $ip"); 246 $self->slog(2, "blocked ip $ip");
207 $self->err_blocked; 247 $self->err_blocked;
248 } else {
249 Coro::Event::do_timer(after => 3);
250 $delay -= 3;
251 }
252 }
208 } 253 }
209 254
210 $req =~ /^(?:\015\012)? 255 $req =~ /^(?:\015\012)?
211 (GET|HEAD) \040+ 256 (GET|HEAD) \040+
212 ([^\040]+) \040+ 257 ([^\040]+) \040+
213 HTTP\/([0-9]+\.[0-9]+) 258 HTTP\/([0-9]+\.[0-9]+)
214 \015\012/gx 259 \015\012/gx
215 or $self->err(403, "method not allowed", { Allow => "GET,HEAD" }); 260 or $self->err(405, "method not allowed", { Allow => "GET,HEAD" });
216
217 $2 ne "1.0"
218 or $self->err(506, "http protocol version not supported");
219 261
220 $self->{method} = $1; 262 $self->{method} = $1;
221 $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");
222 268
223 # parse headers 269 # parse headers
224 { 270 {
225 my (%hdr, $h, $v); 271 my (%hdr, $h, $v);
226 272
… …
237 283
238 $self->{h}{$h} = substr $v, 1 284 $self->{h}{$h} = substr $v, 1
239 while ($h, $v) = each %hdr; 285 while ($h, $v) = each %hdr;
240 } 286 }
241 287
288 # find out server name and port
289 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
290 $host = $1;
291 } else {
292 $host = $self->{h}{host};
293 }
294
295 if (defined $host) {
242 $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 }
243 303
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 }
314
244 weaken ($uri{$self->{uri}}{$self*1} = $self); 315 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self);
245 316
317 eval {
246 $self->map_uri; 318 $self->map_uri;
247 $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);
248 #} 329 }
249} 330}
250 331
251# uri => path mapping 332# uri => path mapping
252sub map_uri { 333sub map_uri {
253 my $self = shift; 334 my $self = shift;
254 my $host = $self->{h}{host} || "default"; 335 my $host = $self->{server_name};
255 my $uri = $self->{uri}; 336 my $uri = $self->{uri};
256 337
257 # some massaging, also makes it more secure 338 # some massaging, also makes it more secure
258 $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;
259 $uri =~ s%//+%/%g; 340 $uri =~ s%//+%/%g;
… …
269 $self->{path} = "$::DOCROOT/$host$uri"; 350 $self->{path} = "$::DOCROOT/$host$uri";
270 351
271 $self->access_check; 352 $self->access_check;
272} 353}
273 354
274sub server_address {
275 my $self = shift;
276 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
277 or $self->err(500, "unable to get socket name");
278 ((inet_ntoa $iaddr), $port);
279}
280
281sub server_host {
282 my $self = shift;
283 if (exists $self->{h}{host}) {
284 return $self->{h}{host};
285 } else {
286 return (($self->server_address)[0]);
287 }
288}
289
290sub server_hostport {
291 my $self = shift;
292 my ($host, $port);
293 if (exists $self->{h}{host}) {
294 ($host, $port) = ($self->{h}{host}, $self->{server_port});
295 } else {
296 ($host, $port) = $self->server_address;
297 }
298 $port = $port == 80 ? "" : ":$port";
299 $host.$port;
300}
301
302sub _cgi { 355sub _cgi {
303 my $self = shift; 356 my $self = shift;
304 my $path = shift; 357 my $path = shift;
305 my $fh; 358 my $fh;
306 359
307 # no two-way xxx supported 360 # no two-way xxx supported
308 if (0 == fork) { 361 if (0 == fork) {
309 open STDOUT, ">&".fileno($self->{fh}); 362 open STDOUT, ">&".fileno($self->{fh});
310 if (chdir $::DOCROOT) { 363 if (chdir $::DOCROOT) {
311 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 364 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
312 $ENV{HTTP_HOST} = $self->server_host; 365 $ENV{HTTP_HOST} = $self->{server_name};
313 $ENV{HTTP_PORT} = $self->{server_host}; 366 $ENV{HTTP_PORT} = $self->{server_port};
314 $ENV{SCRIPT_NAME} = $self->{name}; 367 $ENV{SCRIPT_NAME} = $self->{name};
315 exec $path; 368 exec $path;
316 } 369 }
317 Coro::State::_exit(0); 370 Coro::State::_exit(0);
318 } else { 371 } else {
372 die;
319 } 373 }
374}
375
376sub server_hostport {
377 $_[0]{server_port} == 80
378 ? $_[0]{server_name}
379 : "$_[0]{server_name}:$_[0]{server_port}";
320} 380}
321 381
322sub respond { 382sub respond {
323 my $self = shift; 383 my $self = shift;
324 my $path = $self->{path}; 384 my $path = $self->{path};
… …
334 394
335 if (-d _ && -r _) { 395 if (-d _ && -r _) {
336 # directory 396 # directory
337 if ($path !~ /\/$/) { 397 if ($path !~ /\/$/) {
338 # create a redirect to get the trailing "/" 398 # create a redirect to get the trailing "/"
339 my $host = $self->server_hostport; 399 # we don't try to avoid the :80
340 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 400 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
341 } else { 401 } else {
342 $ims < $self->{stat}[9] 402 $ims < $self->{stat}[9]
343 or $self->err(304, "not modified"); 403 or $self->err(304, "not modified");
344 404
345 if ($self->{method} eq "GET") {
346 if (-r "$path/index.html") { 405 if (-r "$path/index.html") {
347 $self->{path} .= "/index.html"; 406 $self->{path} .= "/index.html";
348 $self->handle_file; 407 $self->handle_file;
349 } else { 408 } else {
350 $self->handle_dir; 409 $self->handle_dir;
351 }
352 } 410 }
353 } 411 }
354 } elsif (-f _ && -r _) { 412 } elsif (-f _ && -r _) {
355 -x _ and $self->err(403, "forbidden"); 413 -x _ and $self->err(403, "forbidden");
356 $self->handle_file; 414 $self->handle_file;
… …
371 $idx); 429 $idx);
372} 430}
373 431
374sub handle_file { 432sub handle_file {
375 my $self = shift; 433 my $self = shift;
376 my $length = -s _; 434 my $length = $self->{stat}[7];
435 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
377 my $hdr = { 436 my $hdr = {
378 "Last-Modified" => time2str ((stat _)[9]), 437 "Last-Modified" => time2str ((stat _)[9]),
379 }; 438 };
380 439
381 my @code = (200, "ok"); 440 my @code = (200, "ok");
… …
389 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 448 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
390 } else { 449 } else {
391 ($l, $h) = (0, $length - 1); 450 ($l, $h) = (0, $length - 1);
392 goto ignore; 451 goto ignore;
393 } 452 }
394 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 453 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
395 } 454 }
396 $hdr->{"Content-Range"} = "bytes */$length"; 455 $hdr->{"Content-Range"} = "bytes */$length";
456 $hdr->{"Content-Length"} = $length;
457 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
397 $self->err(416, "not satisfiable", $hdr); 458 $self->err(416, "not satisfiable", $hdr, "");
398 459
399satisfiable: 460satisfiable:
400 # check for segmented downloads 461 # check for segmented downloads
401 if ($l && $::NO_SEGMENTED) { 462 if ($l && $::NO_SEGMENTED) {
402 if (%{$uri{$self->{uri}}} > 1) { 463 my $delay = 180;
403 $self->slog("segmented download refused\n"); 464 while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) {
404 $self->err(400, "segmented downloads are not allowed"); 465 if ($delay <= 0) {
466 $self->err_segmented_download;
467 } else {
468 Coro::Event::do_timer(after => 3); $delay -= 3;
469 }
405 } 470 }
406 } 471 }
407 472
408 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 473 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
409 @code = (206, "partial content"); 474 @code = (206, "partial content");
… …
419 $hdr->{"Content-Length"} = $length; 484 $hdr->{"Content-Length"} = $length;
420 485
421 $self->response(@code, $hdr, ""); 486 $self->response(@code, $hdr, "");
422 487
423 if ($self->{method} eq "GET") { 488 if ($self->{method} eq "GET") {
489 $self->{time} = $::NOW;
490
491 my $transfer = $queue->[0]->guard;
492 $self->{fh}->writable or return;
493
494 $queue->[1] = $queue->[1] * $::wait_factor
495 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
496 $self->{time} = $::NOW;
497
424 my ($fh, $buf); 498 my ($fh, $buf, $r);
499 my $current = $Coro::current;
425 open $fh, "<", $self->{path} 500 open $fh, "<", $self->{path}
426 or die "$self->{path}: late open failure ($!)"; 501 or die "$self->{path}: late open failure ($!)";
427 502
428 if ($l) {
429 sysseek $fh, $l, 0
430 or die "$self->{path}: cannot seek to $l ($!)";
431 }
432
433 $h -= $l - 1; 503 $h -= $l - 1;
434 504
505 if (0) {
506 if ($l) {
507 sysseek $fh, $l, 0;
508 }
509 }
510
435 while ($h > 0) { 511 while ($h > 0) {
512 if (0) {
436 $h -= sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h; 513 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
514 or last;
515 } else {
516 undef $buf;
517 $aio_requests->down;
518 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
519 $buf, 0, sub {
520 $r = $_[0];
521 $current->ready;
522 });
523 &Coro::schedule;
524 $aio_requests->up;
525 last unless $r;
526 }
437 $self->{fh}->syswrite($buf) 527 my $w = $self->{fh}->syswrite($buf)
438 or last; 528 or last;
529 $::written += $w;
530 $self->{written} += $w;
531 $l += $r;
439 } 532 }
440 }
441 533
442 close $fh; 534 close $fh;
535 }
443} 536}
444 537
4451; 5381;

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