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

Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.12 by root, Sat Aug 11 23:10:56 2001 UTC vs.
Revision 1.37 by root, Sun Sep 2 01:03:53 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"
… …
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
104Event->io(fd => Linux::AIO::poll_fileno,
105 poll => 'r', async => 1,
106 cb => \&Linux::AIO::poll_cb);
107
76our %conn; # $conn{ip}{fh} => connobj 108our %conn; # $conn{ip}{self} => connobj
109our %uri; # $uri{ip}{uri}{self}
77our %blocked; 110our %blocked;
78our %mimetype; 111our %mimetype;
79 112
80sub read_mimetypes { 113sub read_mimetypes {
81 local *M; 114 local *M;
… …
101 or $self->err(500, "unable to decode peername"); 134 or $self->err(500, "unable to decode peername");
102 135
103 $self->{remote_addr} = inet_ntoa $iaddr; 136 $self->{remote_addr} = inet_ntoa $iaddr;
104 $self->{time} = $::NOW; 137 $self->{time} = $::NOW;
105 138
106 # enter ourselves into various lists 139 $::conns++;
107 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
108 140
109 $self; 141 $self;
110} 142}
111 143
112sub DESTROY { 144sub DESTROY {
113 my $self = shift; 145 my $self = shift;
146
147 $::conns--;
148
149 $self->eoconn;
150}
151
152# end of connection
153sub eoconn {
154 my $self = shift;
155
156 # clean up hints
114 delete $conn{$self->{remote_addr}}{$self*1}; 157 delete $conn{$self->{remote_id}}{$self*1};
115 delete $uri{$self->{uri}}{$self*1}; 158 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
116} 159}
117 160
118sub slog { 161sub slog {
119 my $self = shift; 162 my $self = shift;
120 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 163 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
121} 164}
122 165
123sub response { 166sub response {
124 my ($self, $code, $msg, $hdr, $content) = @_; 167 my ($self, $code, $msg, $hdr, $content) = @_;
125 my $res = "HTTP/1.0 $code $msg\015\012"; 168 my $res = "HTTP/1.1 $code $msg\015\012";
126 169
127 $res .= "Connection: close\015\012"; 170 $self->{h}{connection} ||= $hdr->{Connection};
128 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 171
172 $res .= "Date: $HTTP_NOW\015\012";
129 173
130 while (my ($h, $v) = each %$hdr) { 174 while (my ($h, $v) = each %$hdr) {
131 $res .= "$h: $v\015\012" 175 $res .= "$h: $v\015\012"
132 } 176 }
133 $res .= "\015\012"; 177 $res .= "\015\012";
134 178
135 $res .= $content if defined $content and $self->{method} eq "GET"; 179 $res .= $content if defined $content and $self->{method} ne "HEAD";
136 180
137 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# 181 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
182
183 print $accesslog $log if $accesslog;
184 print STDERR $log;
138 185
139 $self->{written} += 186 $self->{written} +=
140 print {$self->{fh}} $res; 187 print {$self->{fh}} $res;
141} 188}
142 189
143sub err { 190sub err {
144 my $self = shift; 191 my $self = shift;
145 my ($code, $msg, $hdr, $content) = @_; 192 my ($code, $msg, $hdr, $content) = @_;
146 193
147 unless (defined $content) { 194 unless (defined $content) {
148 $content = "$code $msg"; 195 $content = "$code $msg\n";
149 $hdr->{"Content-Type"} = "text/plain"; 196 $hdr->{"Content-Type"} = "text/plain";
150 $hdr->{"Content-Length"} = length $content; 197 $hdr->{"Content-Length"} = length $content;
151 } 198 }
199 $hdr->{"Connection"} = "close";
152 200
153 $self->response($code, $msg, $hdr, $content); 201 $self->response($code, $msg, $hdr, $content);
154 202
155 die bless {}, err::; 203 die bless {}, err::;
156} 204}
157 205
158sub err_blocked {
159 my $self = shift;
160 my $ip = $self->{remote_addr};
161 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
162
163 Coro::Event::do_timer(after => 5);
164
165 $self->err(403, "too many connections",
166 {
167 "Content-Type" => "text/html",
168 "Retry-After" => $::BLOCKTIME
169 },
170 <<EOF);
171<html><p>
172You have been blocked because you opened too many connections. You
173may retry at</p>
174
175 <p><blockquote>$time.</blockquote></p>
176
177<p>Until then, each new access will renew the block. You might want to have a
178look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
179</html>
180EOF
181}
182
183sub handle { 206sub handle {
184 my $self = shift; 207 my $self = shift;
185 my $fh = $self->{fh}; 208 my $fh = $self->{fh};
186 209
210 my $host;
211
212 $fh->timeout($::REQ_TIMEOUT);
187 #while() { 213 while() {
214 $self->{reqs}++;
215
216 # read request and parse first line
217 my $req = $fh->readline("\015\012\015\012");
218
219 unless (defined $req) {
220 if (exists $self->{version}) {
221 last;
222 } else {
223 $self->err(408, "request timeout");
224 }
225 }
226
188 $self->{h} = {}; 227 $self->{h} = {};
189 228
190 # read request and parse first line
191 $fh->timeout($::REQ_TIMEOUT);
192 my $req = $fh->readline("\015\012\015\012");
193 $fh->timeout($::RES_TIMEOUT); 229 $fh->timeout($::RES_TIMEOUT);
194
195 defined $req or
196 $self->err(408, "request timeout");
197
198 my $ip = $self->{remote_addr};
199
200 if ($blocked{$ip}) {
201 $self->err_blocked($blocked{$ip})
202 if $blocked{$ip} > $::NOW;
203
204 delete $blocked{$ip};
205 }
206
207 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
208 $self->slog(2, "blocked ip $ip");
209 $self->err_blocked;
210 }
211 230
212 $req =~ /^(?:\015\012)? 231 $req =~ /^(?:\015\012)?
213 (GET|HEAD) \040+ 232 (GET|HEAD) \040+
214 ([^\040]+) \040+ 233 ([^\040]+) \040+
215 HTTP\/([0-9]+\.[0-9]+) 234 HTTP\/([0-9]+\.[0-9]+)
216 \015\012/gx 235 \015\012/gx
217 or $self->err(403, "method not allowed", { Allow => "GET,HEAD" }); 236 or $self->err(405, "method not allowed", { Allow => "GET,HEAD" });
218
219 $2 ne "1.0"
220 or $self->err(506, "http protocol version not supported");
221 237
222 $self->{method} = $1; 238 $self->{method} = $1;
223 $self->{uri} = $2; 239 $self->{uri} = $2;
240 $self->{version} = $3;
241
242 $3 =~ /^1\./
243 or $self->err(506, "http protocol version $3 not supported");
224 244
225 # parse headers 245 # parse headers
226 { 246 {
227 my (%hdr, $h, $v); 247 my (%hdr, $h, $v);
228 248
… …
239 259
240 $self->{h}{$h} = substr $v, 1 260 $self->{h}{$h} = substr $v, 1
241 while ($h, $v) = each %hdr; 261 while ($h, $v) = each %hdr;
242 } 262 }
243 263
264 # remote id should be unique per user
265 my $id = $self->{remote_addr};
266
267 if (exists $self->{h}{"client-ip"}) {
268 $id .= "[".$self->{h}{"client-ip"}."]";
269 } elsif (exists $self->{h}{"x-forwarded-for"}) {
270 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
271 }
272
273 $self->{remote_id} = $id;
274
275 if ($blocked{$id}) {
276 $self->err_blocked($blocked{$id})
277 if $blocked{$id} > $::NOW;
278
279 delete $blocked{$id};
280 }
281
282 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
283 my $delay = $::PER_TIMEOUT + 15;
284 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
285 if ($delay <= 0) {
286 $self->slog(2, "blocked ip $id");
287 $self->err_blocked;
288 } else {
289 Coro::Event::do_timer(after => 4); $delay -= 4;
290 }
291 }
292 }
293
294 # find out server name and port
295 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
296 $host = $1;
297 } else {
298 $host = $self->{h}{host};
299 }
300
301 if (defined $host) {
244 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 302 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
303 } else {
304 ($self->{server_port}, $host)
305 = unpack_sockaddr_in $self->{fh}->getsockname
306 or $self->err(500, "unable to get socket name");
307 $host = inet_ntoa $host;
308 }
245 309
310 $self->{server_name} = $host;
311
312 # enter ourselves into various lists
313 weaken ($conn{$id}{$self*1} = $self);
246 weaken ($uri{$self->{uri}}{$self*1} = $self); 314 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
247 315
316 eval {
248 $self->map_uri; 317 $self->map_uri;
249 $self->respond; 318 $self->respond;
319 };
320
321 $self->eoconn;
322
323 die if $@ && !ref $@;
324
325 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
326
327 $fh->timeout($::PER_TIMEOUT);
250 #} 328 }
251} 329}
252 330
253# uri => path mapping 331# uri => path mapping
254sub map_uri { 332sub map_uri {
255 my $self = shift; 333 my $self = shift;
256 my $host = $self->{h}{host} || "default"; 334 my $host = $self->{server_name};
257 my $uri = $self->{uri}; 335 my $uri = $self->{uri};
258 336
259 # some massaging, also makes it more secure 337 # some massaging, also makes it more secure
260 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 338 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
261 $uri =~ s%//+%/%g; 339 $uri =~ s%//+%/%g;
… …
271 $self->{path} = "$::DOCROOT/$host$uri"; 349 $self->{path} = "$::DOCROOT/$host$uri";
272 350
273 $self->access_check; 351 $self->access_check;
274} 352}
275 353
276sub server_address {
277 my $self = shift;
278 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
279 or $self->err(500, "unable to get socket name");
280 ((inet_ntoa $iaddr), $port);
281}
282
283sub server_host {
284 my $self = shift;
285 if (exists $self->{h}{host}) {
286 return $self->{h}{host};
287 } else {
288 return (($self->server_address)[0]);
289 }
290}
291
292sub server_hostport {
293 my $self = shift;
294 my ($host, $port);
295 if (exists $self->{h}{host}) {
296 ($host, $port) = ($self->{h}{host}, $self->{server_port});
297 } else {
298 ($host, $port) = $self->server_address;
299 }
300 $port = $port == 80 ? "" : ":$port";
301 $host.$port;
302}
303
304sub _cgi { 354sub _cgi {
305 my $self = shift; 355 my $self = shift;
306 my $path = shift; 356 my $path = shift;
307 my $fh; 357 my $fh;
308 358
309 # no two-way xxx supported 359 # no two-way xxx supported
310 if (0 == fork) { 360 if (0 == fork) {
311 open STDOUT, ">&".fileno($self->{fh}); 361 open STDOUT, ">&".fileno($self->{fh});
312 if (chdir $::DOCROOT) { 362 if (chdir $::DOCROOT) {
313 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 363 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
314 $ENV{HTTP_HOST} = $self->server_host; 364 $ENV{HTTP_HOST} = $self->{server_name};
315 $ENV{HTTP_PORT} = $self->{server_host}; 365 $ENV{HTTP_PORT} = $self->{server_port};
316 $ENV{SCRIPT_NAME} = $self->{name}; 366 $ENV{SCRIPT_NAME} = $self->{name};
317 exec $path; 367 exec $path;
318 } 368 }
319 Coro::State::_exit(0); 369 Coro::State::_exit(0);
320 } else { 370 } else {
371 die;
321 } 372 }
373}
374
375sub server_hostport {
376 $_[0]{server_port} == 80
377 ? $_[0]{server_name}
378 : "$_[0]{server_name}:$_[0]{server_port}";
322} 379}
323 380
324sub respond { 381sub respond {
325 my $self = shift; 382 my $self = shift;
326 my $path = $self->{path}; 383 my $path = $self->{path};
… …
336 393
337 if (-d _ && -r _) { 394 if (-d _ && -r _) {
338 # directory 395 # directory
339 if ($path !~ /\/$/) { 396 if ($path !~ /\/$/) {
340 # create a redirect to get the trailing "/" 397 # create a redirect to get the trailing "/"
341 my $host = $self->server_hostport; 398 # we don't try to avoid the :80
342 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 399 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
343 } else { 400 } else {
344 $ims < $self->{stat}[9] 401 $ims < $self->{stat}[9]
345 or $self->err(304, "not modified"); 402 or $self->err(304, "not modified");
346 403
347 if ($self->{method} eq "GET") {
348 if (-r "$path/index.html") { 404 if (-r "$path/index.html") {
349 $self->{path} .= "/index.html"; 405 $self->{path} .= "/index.html";
350 $self->handle_file; 406 $self->handle_file;
351 } else { 407 } else {
352 $self->handle_dir; 408 $self->handle_dir;
353 }
354 } 409 }
355 } 410 }
356 } elsif (-f _ && -r _) { 411 } elsif (-f _ && -r _) {
357 -x _ and $self->err(403, "forbidden"); 412 -x _ and $self->err(403, "forbidden");
358 $self->handle_file; 413 $self->handle_file;
… …
373 $idx); 428 $idx);
374} 429}
375 430
376sub handle_file { 431sub handle_file {
377 my $self = shift; 432 my $self = shift;
378 my $length = -s _; 433 my $length = $self->{stat}[7];
434 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
379 my $hdr = { 435 my $hdr = {
380 "Last-Modified" => time2str ((stat _)[9]), 436 "Last-Modified" => time2str ((stat _)[9]),
381 }; 437 };
382 438
383 my @code = (200, "ok"); 439 my @code = (200, "ok");
… …
391 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 447 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
392 } else { 448 } else {
393 ($l, $h) = (0, $length - 1); 449 ($l, $h) = (0, $length - 1);
394 goto ignore; 450 goto ignore;
395 } 451 }
396 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 452 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
397 } 453 }
398 $hdr->{"Content-Range"} = "bytes */$length"; 454 $hdr->{"Content-Range"} = "bytes */$length";
455 $hdr->{"Content-Length"} = $length;
399 $self->err(416, "not satisfiable", $hdr); 456 $self->err(416, "not satisfiable", $hdr, "");
400 457
401satisfiable: 458satisfiable:
402 # check for segmented downloads 459 # check for segmented downloads
403 if ($l && $::NO_SEGMENTED) { 460 if ($l && $::NO_SEGMENTED) {
461 my $delay = $::PER_TIMEOUT + 15;
404 if (%{$uri{$self->{uri}}} > 1) { 462 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
405 $self->err(400, "segmented downloads are not allowed"); 463 if ($delay <= 0) {
464 $self->err_segmented_download;
465 } else {
466 Coro::Event::do_timer(after => 4); $delay -= 4;
467 }
406 } 468 }
407 } 469 }
408 470
409 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 471 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
410 @code = (206, "partial content"); 472 @code = (206, "partial content");
… …
420 $hdr->{"Content-Length"} = $length; 482 $hdr->{"Content-Length"} = $length;
421 483
422 $self->response(@code, $hdr, ""); 484 $self->response(@code, $hdr, "");
423 485
424 if ($self->{method} eq "GET") { 486 if ($self->{method} eq "GET") {
487 $self->{time} = $::NOW;
488
489 my $fudge = $queue->[0]->waiters;
490 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
491
492 $queue->[1] *= $fudge;
493 my $transfer = $queue->[0]->guard;
494
495 if ($fudge != 1) {
496 $queue->[1] /= $fudge;
497 $queue->[1] = $queue->[1] * $::wait_factor
498 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
499 }
500 $self->{time} = $::NOW;
501
502 $self->{fh}->writable or return;
503
425 my ($fh, $buf); 504 my ($fh, $buf, $r);
505 my $current = $Coro::current;
426 open $fh, "<", $self->{path} 506 open $fh, "<", $self->{path}
427 or die "$self->{path}: late open failure ($!)"; 507 or die "$self->{path}: late open failure ($!)";
428 508
429 if ($l) {
430 sysseek $fh, $l, 0
431 or die "$self->{path}: cannot seek to $l ($!)";
432 }
433
434 $h -= $l - 1; 509 $h -= $l - 1;
435 510
511 if (0) {
512 if ($l) {
513 sysseek $fh, $l, 0;
514 }
515 }
516
436 while ($h > 0) { 517 while ($h > 0) {
518 if (0) {
437 $h -= sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h; 519 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
438 my $w = $self->{fh}->syswrite($buf) 520 or last;
521 } else {
522 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
523 $buf, 0, sub {
524 $r = $_[0];
525 Coro::ready($current);
526 });
527 &Coro::schedule;
528 last unless $r;
529 }
530 my $w = syswrite $self->{fh}, $buf
439 or last; 531 or last;
440 $::written += $w; 532 $::written += $w;
441 $self->{written} += $w; 533 $self->{written} += $w;
534 $l += $r;
442 } 535 }
443 }
444 536
445 close $fh; 537 close $fh;
538 }
446} 539}
447 540
4481; 5411;

Diff Legend

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