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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.16 by root, Tue Aug 14 19:38:25 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 }
… …
75use Linux::AIO; 99use Linux::AIO;
76 100
77Linux::AIO::min_parallel $::AIO_PARALLEL; 101Linux::AIO::min_parallel $::AIO_PARALLEL;
78 102
79Event->io(fd => Linux::AIO::poll_fileno, 103Event->io(fd => Linux::AIO::poll_fileno,
80 poll => 'r', 104 poll => 'r', async => 1,
81 async => 1,
82 cb => \&Linux::AIO::poll_cb ); 105 cb => \&Linux::AIO::poll_cb);
83 106
84Event->add_hooks(prepare => sub {
85 &Coro::cede while &Coro::nready;
86 1e6;
87});
88
89our %conn; # $conn{ip}{fh} => connobj 107our %conn; # $conn{ip}{self} => connobj
108our %uri; # $uri{ip}{uri}{self}
90our %blocked; 109our %blocked;
91our %mimetype; 110our %mimetype;
92 111
93sub read_mimetypes { 112sub read_mimetypes {
94 local *M; 113 local *M;
… …
114 or $self->err(500, "unable to decode peername"); 133 or $self->err(500, "unable to decode peername");
115 134
116 $self->{remote_addr} = inet_ntoa $iaddr; 135 $self->{remote_addr} = inet_ntoa $iaddr;
117 $self->{time} = $::NOW; 136 $self->{time} = $::NOW;
118 137
119 # enter ourselves into various lists
120 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
121
122 $::conns++; 138 $::conns++;
123 139
124 $self; 140 $self;
125} 141}
126 142
127sub DESTROY { 143sub DESTROY {
128 my $self = shift; 144 my $self = shift;
129
130 $::conns--; 145 $::conns--;
146 $self->eoconn;
147}
131 148
149# end of connection
150sub eoconn {
151 my $self = shift;
152
153 # clean up hints
132 delete $conn{$self->{remote_addr}}{$self*1}; 154 delete $conn{$self->{remote_id}}{$self*1};
133 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 155 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
134} 156}
135 157
136sub slog { 158sub slog {
137 my $self = shift; 159 my $self = shift;
138 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 160 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
139} 161}
140 162
141sub response { 163sub response {
142 my ($self, $code, $msg, $hdr, $content) = @_; 164 my ($self, $code, $msg, $hdr, $content) = @_;
143 my $res = "HTTP/1.0 $code $msg\015\012"; 165 my $res = "HTTP/1.1 $code $msg\015\012";
144 166
145 $res .= "Connection: close\015\012"; 167 $self->{h}{connection} ||= $hdr->{Connection};
146 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 168
169 $res .= "Date: $HTTP_NOW\015\012";
147 170
148 while (my ($h, $v) = each %$hdr) { 171 while (my ($h, $v) = each %$hdr) {
149 $res .= "$h: $v\015\012" 172 $res .= "$h: $v\015\012"
150 } 173 }
151 $res .= "\015\012"; 174 $res .= "\015\012";
152 175
153 $res .= $content if defined $content and $self->{method} ne "HEAD"; 176 $res .= $content if defined $content and $self->{method} ne "HEAD";
154 177
155 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# 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;
156 182
157 $self->{written} += 183 $self->{written} +=
158 print {$self->{fh}} $res; 184 print {$self->{fh}} $res;
159} 185}
160 186
161sub err { 187sub err {
162 my $self = shift; 188 my $self = shift;
163 my ($code, $msg, $hdr, $content) = @_; 189 my ($code, $msg, $hdr, $content) = @_;
164 190
165 unless (defined $content) { 191 unless (defined $content) {
166 $content = "$code $msg"; 192 $content = "$code $msg\n";
167 $hdr->{"Content-Type"} = "text/plain"; 193 $hdr->{"Content-Type"} = "text/plain";
168 $hdr->{"Content-Length"} = length $content; 194 $hdr->{"Content-Length"} = length $content;
169 } 195 }
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 => 15);
182
183 $self->err(401, "too many connections",
184 {
185 "Content-Type" => "text/html",
186 "Retry-After" => $::BLOCKTIME
187 },
188 <<EOF);
189<html><p>
190You have been blocked because you opened too many connections. You
191may retry at</p>
192
193 <p><blockquote>$time.</blockquote></p>
194
195<p>Until then, each new access will renew the block. You might want to have a
196look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
197</html>
198EOF
199}
200
201sub handle { 203sub handle {
202 my $self = shift; 204 my $self = shift;
203 my $fh = $self->{fh}; 205 my $fh = $self->{fh};
204 206
207 my $host;
208
209 $fh->timeout($::REQ_TIMEOUT);
205 #while() { 210 while() {
211 $self->{reqs}++;
212
213 # read request and parse first line
214 my $req = $fh->readline("\015\012\015\012");
215
216 unless (defined $req) {
217 if (exists $self->{version}) {
218 last;
219 } else {
220 $self->err(408, "request timeout");
221 }
222 }
223
206 $self->{h} = {}; 224 $self->{h} = {};
207 225
208 # read request and parse first line
209 $fh->timeout($::REQ_TIMEOUT);
210 my $req = $fh->readline("\015\012\015\012");
211 $fh->timeout($::RES_TIMEOUT); 226 $fh->timeout($::RES_TIMEOUT);
212
213 defined $req or
214 $self->err(408, "request timeout");
215
216 my $ip = $self->{remote_addr};
217
218 if ($blocked{$ip}) {
219 $self->err_blocked($blocked{$ip})
220 if $blocked{$ip} > $::NOW;
221
222 delete $blocked{$ip};
223 }
224
225 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
226 $self->slog(2, "blocked ip $ip");
227 $self->err_blocked;
228 }
229 227
230 $req =~ /^(?:\015\012)? 228 $req =~ /^(?:\015\012)?
231 (GET|HEAD) \040+ 229 (GET|HEAD) \040+
232 ([^\040]+) \040+ 230 ([^\040]+) \040+
233 HTTP\/([0-9]+\.[0-9]+) 231 HTTP\/([0-9]+\.[0-9]+)
234 \015\012/gx 232 \015\012/gx
235 or $self->err(405, "method not allowed", { Allow => "GET,HEAD" }); 233 or $self->err(405, "method not allowed", { Allow => "GET,HEAD" });
236 234
237 $2 ne "1.0"
238 or $self->err(506, "http protocol version not supported");
239
240 $self->{method} = $1; 235 $self->{method} = $1;
241 $self->{uri} = $2; 236 $self->{uri} = $2;
237 $self->{version} = $3;
238
239 $3 =~ /^1\./
240 or $self->err(506, "http protocol version $3 not supported");
242 241
243 # parse headers 242 # parse headers
244 { 243 {
245 my (%hdr, $h, $v); 244 my (%hdr, $h, $v);
246 245
… …
257 256
258 $self->{h}{$h} = substr $v, 1 257 $self->{h}{$h} = substr $v, 1
259 while ($h, $v) = each %hdr; 258 while ($h, $v) = each %hdr;
260 } 259 }
261 260
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) {
262 $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 }
263 306
307 $self->{server_name} = $host;
308
309 # enter ourselves into various lists
310 weaken ($conn{$id}{$self*1} = $self);
264 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 311 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
265 312
313 eval {
266 $self->map_uri; 314 $self->map_uri;
267 $self->respond; 315 $self->respond;
316 };
317
318 $self->eoconn;
319
320 die if $@ && !ref $@;
321
322 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
323
324 $fh->timeout($::PER_TIMEOUT);
268 #} 325 }
269} 326}
270 327
271# uri => path mapping 328# uri => path mapping
272sub map_uri { 329sub map_uri {
273 my $self = shift; 330 my $self = shift;
274 my $host = $self->{h}{host} || "default"; 331 my $host = $self->{server_name};
275 my $uri = $self->{uri}; 332 my $uri = $self->{uri};
276 333
277 # some massaging, also makes it more secure 334 # some massaging, also makes it more secure
278 $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;
279 $uri =~ s%//+%/%g; 336 $uri =~ s%//+%/%g;
… …
289 $self->{path} = "$::DOCROOT/$host$uri"; 346 $self->{path} = "$::DOCROOT/$host$uri";
290 347
291 $self->access_check; 348 $self->access_check;
292} 349}
293 350
294sub server_address {
295 my $self = shift;
296 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
297 or $self->err(500, "unable to get socket name");
298 ((inet_ntoa $iaddr), $port);
299}
300
301sub server_host {
302 my $self = shift;
303 if (exists $self->{h}{host}) {
304 return $self->{h}{host};
305 } else {
306 return (($self->server_address)[0]);
307 }
308}
309
310sub server_hostport {
311 my $self = shift;
312 my ($host, $port);
313 if (exists $self->{h}{host}) {
314 ($host, $port) = ($self->{h}{host}, $self->{server_port});
315 } else {
316 ($host, $port) = $self->server_address;
317 }
318 $port = $port == 80 ? "" : ":$port";
319 $host.$port;
320}
321
322sub _cgi { 351sub _cgi {
323 my $self = shift; 352 my $self = shift;
324 my $path = shift; 353 my $path = shift;
325 my $fh; 354 my $fh;
326 355
327 # no two-way xxx supported 356 # no two-way xxx supported
328 if (0 == fork) { 357 if (0 == fork) {
329 open STDOUT, ">&".fileno($self->{fh}); 358 open STDOUT, ">&".fileno($self->{fh});
330 if (chdir $::DOCROOT) { 359 if (chdir $::DOCROOT) {
331 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 360 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
332 $ENV{HTTP_HOST} = $self->server_host; 361 $ENV{HTTP_HOST} = $self->{server_name};
333 $ENV{HTTP_PORT} = $self->{server_host}; 362 $ENV{HTTP_PORT} = $self->{server_port};
334 $ENV{SCRIPT_NAME} = $self->{name}; 363 $ENV{SCRIPT_NAME} = $self->{name};
335 exec $path; 364 exec $path;
336 } 365 }
337 Coro::State::_exit(0); 366 Coro::State::_exit(0);
338 } else { 367 } else {
368 die;
339 } 369 }
370}
371
372sub server_hostport {
373 $_[0]{server_port} == 80
374 ? $_[0]{server_name}
375 : "$_[0]{server_name}:$_[0]{server_port}";
340} 376}
341 377
342sub respond { 378sub respond {
343 my $self = shift; 379 my $self = shift;
344 my $path = $self->{path}; 380 my $path = $self->{path};
… …
354 390
355 if (-d _ && -r _) { 391 if (-d _ && -r _) {
356 # directory 392 # directory
357 if ($path !~ /\/$/) { 393 if ($path !~ /\/$/) {
358 # create a redirect to get the trailing "/" 394 # create a redirect to get the trailing "/"
359 my $host = $self->server_hostport; 395 # we don't try to avoid the :80
360 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 396 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
361 } else { 397 } else {
362 $ims < $self->{stat}[9] 398 $ims < $self->{stat}[9]
363 or $self->err(304, "not modified"); 399 or $self->err(304, "not modified");
364 400
365 if ($self->{method} eq "GET") {
366 if (-r "$path/index.html") { 401 if (-r "$path/index.html") {
367 $self->{path} .= "/index.html"; 402 $self->{path} .= "/index.html";
368 $self->handle_file; 403 $self->handle_file;
369 } else { 404 } else {
370 $self->handle_dir; 405 $self->handle_dir;
371 }
372 } 406 }
373 } 407 }
374 } elsif (-f _ && -r _) { 408 } elsif (-f _ && -r _) {
375 -x _ and $self->err(403, "forbidden"); 409 -x _ and $self->err(403, "forbidden");
376 $self->handle_file; 410 $self->handle_file;
… …
391 $idx); 425 $idx);
392} 426}
393 427
394sub handle_file { 428sub handle_file {
395 my $self = shift; 429 my $self = shift;
396 my $length = -s _; 430 my $length = $self->{stat}[7];
431 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
397 my $hdr = { 432 my $hdr = {
398 "Last-Modified" => time2str ((stat _)[9]), 433 "Last-Modified" => time2str ((stat _)[9]),
399 }; 434 };
400 435
401 my @code = (200, "ok"); 436 my @code = (200, "ok");
… …
409 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 444 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
410 } else { 445 } else {
411 ($l, $h) = (0, $length - 1); 446 ($l, $h) = (0, $length - 1);
412 goto ignore; 447 goto ignore;
413 } 448 }
414 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 449 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
415 } 450 }
416 $hdr->{"Content-Range"} = "bytes */$length"; 451 $hdr->{"Content-Range"} = "bytes */$length";
452 $hdr->{"Content-Length"} = $length;
417 $self->err(416, "not satisfiable", $hdr); 453 $self->err(416, "not satisfiable", $hdr, "");
418 454
419satisfiable: 455satisfiable:
420 # check for segmented downloads 456 # check for segmented downloads
421 if ($l && $::NO_SEGMENTED) { 457 if ($l && $::NO_SEGMENTED) {
458 my $delay = $::PER_TIMEOUT + 15;
422 if (%{$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 {
423 Coro::Event::do_timer(after => 15); 463 Coro::Event::do_timer(after => 4); $delay -= 4;
424 464 }
425 $self->err(400, "segmented downloads are not allowed");
426 } 465 }
427 } 466 }
428 467
429 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 468 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
430 @code = (206, "partial content"); 469 @code = (206, "partial content");
… …
440 $hdr->{"Content-Length"} = $length; 479 $hdr->{"Content-Length"} = $length;
441 480
442 $self->response(@code, $hdr, ""); 481 $self->response(@code, $hdr, "");
443 482
444 if ($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 $self->{fh}->writable or return;
500
445 my ($fh, $buf, $r); 501 my ($fh, $buf, $r);
446 my $current = $Coro::current; 502 my $current = $Coro::current;
447 open $fh, "<", $self->{path} 503 open $fh, "<", $self->{path}
448 or die "$self->{path}: late open failure ($!)"; 504 or die "$self->{path}: late open failure ($!)";
449 505
450 $h -= $l - 1; 506 $h -= $l - 1;
451 507
508 if (0) {
509 if ($l) {
510 sysseek $fh, $l, 0;
511 }
512 }
513
452 while ($h > 0) { 514 while ($h > 0) {
515 if (0) {
516 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
517 or last;
518 } else {
453 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 519 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
454 $buf, 0, sub { 520 $buf, 0, sub {
455 $r = $_[0]; 521 $r = $_[0];
456 $current->ready; 522 Coro::ready($current);
457 }); 523 });
458 &Coro::schedule; 524 &Coro::schedule;
459 last unless $r; 525 last unless $r;
460 my $w = $self->{fh}->syswrite($buf) 526 }
527 my $w = syswrite $self->{fh}, $buf
461 or last; 528 or last;
462 $::written += $w; 529 $::written += $w;
463 $self->{written} += $w; 530 $self->{written} += $w;
464 $l += $r; 531 $l += $r;
465 } 532 }
466 }
467 533
468 close $fh; 534 close $fh;
535 }
469} 536}
470 537
4711; 5381;

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