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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.10 by root, Sat Aug 11 16:34:47 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;
… …
43 60
44my $http_port = new Coro::Socket 61my $http_port = new Coro::Socket
45 LocalAddr => $SERVER_HOST, 62 LocalAddr => $SERVER_HOST,
46 LocalPort => $SERVER_PORT, 63 LocalPort => $SERVER_PORT,
47 ReuseAddr => 1, 64 ReuseAddr => 1,
48 Listen => 1, 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;
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;
52 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 }
… …
70package conn; 94package conn;
71 95
72use Socket; 96use Socket;
73use HTTP::Date; 97use HTTP::Date;
74use Convert::Scalar 'weaken'; 98use Convert::Scalar 'weaken';
99use Linux::AIO;
75 100
101Linux::AIO::min_parallel $::AIO_PARALLEL;
102
103Event->io(fd => Linux::AIO::poll_fileno,
104 poll => 'r', async => 1,
105 cb => \&Linux::AIO::poll_cb);
106
76our %conn; # $conn{ip}{fh} => connobj 107our %conn; # $conn{ip}{self} => connobj
108our %uri; # $uri{ip}{uri}{self}
77our %blocked; 109our %blocked;
78our %mimetype; 110our %mimetype;
79 111
80sub read_mimetypes { 112sub read_mimetypes {
81 local *M; 113 local *M;
… …
99 my $self = bless { fh => $fh }, $class; 131 my $self = bless { fh => $fh }, $class;
100 my (undef, $iaddr) = unpack_sockaddr_in $peername 132 my (undef, $iaddr) = unpack_sockaddr_in $peername
101 or $self->err(500, "unable to decode peername"); 133 or $self->err(500, "unable to decode peername");
102 134
103 $self->{remote_addr} = inet_ntoa $iaddr; 135 $self->{remote_addr} = inet_ntoa $iaddr;
136 $self->{time} = $::NOW;
104 137
105 # enter ourselves into various lists 138 $::conns++;
106 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
107 139
108 $self; 140 $self;
109} 141}
110 142
111sub DESTROY { 143sub DESTROY {
112 my $self = shift; 144 my $self = shift;
145 $::conns--;
146 $self->eoconn;
147}
148
149# end of connection
150sub eoconn {
151 my $self = shift;
152
153 # clean up hints
113 delete $conn{$self->{remote_addr}}{$self*1}; 154 delete $conn{$self->{remote_id}}{$self*1};
114 delete $uri{$self->{uri}}{$self*1}; 155 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
115} 156}
116 157
117sub slog { 158sub slog {
118 my $self = shift; 159 my $self = shift;
119 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 160 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
120} 161}
121 162
122sub response { 163sub response {
123 my ($self, $code, $msg, $hdr, $content) = @_; 164 my ($self, $code, $msg, $hdr, $content) = @_;
124 my $res = "HTTP/1.0 $code $msg\015\012"; 165 my $res = "HTTP/1.1 $code $msg\015\012";
125 166
126 $res .= "Connection: close\015\012"; 167 $self->{h}{connection} ||= $hdr->{Connection};
127 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 168
169 $res .= "Date: $HTTP_NOW\015\012";
128 170
129 while (my ($h, $v) = each %$hdr) { 171 while (my ($h, $v) = each %$hdr) {
130 $res .= "$h: $v\015\012" 172 $res .= "$h: $v\015\012"
131 } 173 }
132 $res .= "\015\012"; 174 $res .= "\015\012";
133 175
134 $res .= $content if defined $content and $self->{method} eq "GET"; 176 $res .= $content if defined $content and $self->{method} ne "HEAD";
135 177
136 print STDERR "$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";
137 179
180 print $accesslog $log if $accesslog;
181 print STDERR $log;
182
183 $self->{written} +=
138 print {$self->{fh}} $res; 184 print {$self->{fh}} $res;
139} 185}
140 186
141sub err { 187sub err {
142 my $self = shift; 188 my $self = shift;
143 my ($code, $msg, $hdr, $content) = @_; 189 my ($code, $msg, $hdr, $content) = @_;
144 190
145 unless (defined $content) { 191 unless (defined $content) {
146 $content = "$code $msg"; 192 $content = "$code $msg\n";
147 $hdr->{"Content-Type"} = "text/plain"; 193 $hdr->{"Content-Type"} = "text/plain";
148 $hdr->{"Content-Length"} = length $content; 194 $hdr->{"Content-Length"} = length $content;
149 } 195 }
196 $hdr->{"Connection"} = "close";
150 197
151 $self->response($code, $msg, $hdr, $content); 198 $self->response($code, $msg, $hdr, $content);
152 199
153 die bless {}, err::; 200 die bless {}, err::;
154} 201}
155 202
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 { 203sub handle {
182 my $self = shift; 204 my $self = shift;
183 my $fh = $self->{fh}; 205 my $fh = $self->{fh};
184 206
207 my $host;
208
209 $fh->timeout($::REQ_TIMEOUT);
185 #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
186 $self->{h} = {}; 224 $self->{h} = {};
187 225
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); 226 $fh->timeout($::RES_TIMEOUT);
192
193 defined $req or
194 $self->err(408, "request timeout");
195
196 my $ip = $self->{remote_addr};
197
198 if ($blocked{$ip}) {
199 $self->err_blocked($blocked{$ip})
200 if $blocked{$ip} > $::NOW;
201
202 delete $blocked{$ip};
203 }
204
205 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
206 $self->slog("blocked ip $ip");
207 $self->err_blocked;
208 }
209 227
210 $req =~ /^(?:\015\012)? 228 $req =~ /^(?:\015\012)?
211 (GET|HEAD) \040+ 229 (GET|HEAD) \040+
212 ([^\040]+) \040+ 230 ([^\040]+) \040+
213 HTTP\/([0-9]+\.[0-9]+) 231 HTTP\/([0-9]+\.[0-9]+)
214 \015\012/gx 232 \015\012/gx
215 or $self->err(403, "method not allowed", { Allow => "GET,HEAD" }); 233 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");
219 234
220 $self->{method} = $1; 235 $self->{method} = $1;
221 $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");
222 241
223 # parse headers 242 # parse headers
224 { 243 {
225 my (%hdr, $h, $v); 244 my (%hdr, $h, $v);
226 245
… …
237 256
238 $self->{h}{$h} = substr $v, 1 257 $self->{h}{$h} = substr $v, 1
239 while ($h, $v) = each %hdr; 258 while ($h, $v) = each %hdr;
240 } 259 }
241 260
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) {
242 $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 }
243 306
307 $self->{server_name} = $host;
308
309 # enter ourselves into various lists
310 weaken ($conn{$id}{$self*1} = $self);
244 weaken ($uri{$self->{uri}}{$self*1} = $self); 311 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
245 312
313 eval {
246 $self->map_uri; 314 $self->map_uri;
247 $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);
248 #} 325 }
249} 326}
250 327
251# uri => path mapping 328# uri => path mapping
252sub map_uri { 329sub map_uri {
253 my $self = shift; 330 my $self = shift;
254 my $host = $self->{h}{host} || "default"; 331 my $host = $self->{server_name};
255 my $uri = $self->{uri}; 332 my $uri = $self->{uri};
256 333
257 # some massaging, also makes it more secure 334 # some massaging, also makes it more secure
258 $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;
259 $uri =~ s%//+%/%g; 336 $uri =~ s%//+%/%g;
… …
269 $self->{path} = "$::DOCROOT/$host$uri"; 346 $self->{path} = "$::DOCROOT/$host$uri";
270 347
271 $self->access_check; 348 $self->access_check;
272} 349}
273 350
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 { 351sub _cgi {
303 my $self = shift; 352 my $self = shift;
304 my $path = shift; 353 my $path = shift;
305 my $fh; 354 my $fh;
306 355
307 # no two-way xxx supported 356 # no two-way xxx supported
308 if (0 == fork) { 357 if (0 == fork) {
309 open STDOUT, ">&".fileno($self->{fh}); 358 open STDOUT, ">&".fileno($self->{fh});
310 if (chdir $::DOCROOT) { 359 if (chdir $::DOCROOT) {
311 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 360 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
312 $ENV{HTTP_HOST} = $self->server_host; 361 $ENV{HTTP_HOST} = $self->{server_name};
313 $ENV{HTTP_PORT} = $self->{server_host}; 362 $ENV{HTTP_PORT} = $self->{server_port};
314 $ENV{SCRIPT_NAME} = $self->{name}; 363 $ENV{SCRIPT_NAME} = $self->{name};
315 exec $path; 364 exec $path;
316 } 365 }
317 Coro::State::_exit(0); 366 Coro::State::_exit(0);
318 } else { 367 } else {
368 die;
319 } 369 }
370}
371
372sub server_hostport {
373 $_[0]{server_port} == 80
374 ? $_[0]{server_name}
375 : "$_[0]{server_name}:$_[0]{server_port}";
320} 376}
321 377
322sub respond { 378sub respond {
323 my $self = shift; 379 my $self = shift;
324 my $path = $self->{path}; 380 my $path = $self->{path};
… …
334 390
335 if (-d _ && -r _) { 391 if (-d _ && -r _) {
336 # directory 392 # directory
337 if ($path !~ /\/$/) { 393 if ($path !~ /\/$/) {
338 # create a redirect to get the trailing "/" 394 # create a redirect to get the trailing "/"
339 my $host = $self->server_hostport; 395 # we don't try to avoid the :80
340 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 396 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
341 } else { 397 } else {
342 $ims < $self->{stat}[9] 398 $ims < $self->{stat}[9]
343 or $self->err(304, "not modified"); 399 or $self->err(304, "not modified");
344 400
345 if ($self->{method} eq "GET") {
346 if (-r "$path/index.html") { 401 if (-r "$path/index.html") {
347 $self->{path} .= "/index.html"; 402 $self->{path} .= "/index.html";
348 $self->handle_file; 403 $self->handle_file;
349 } else { 404 } else {
350 $self->handle_dir; 405 $self->handle_dir;
351 }
352 } 406 }
353 } 407 }
354 } elsif (-f _ && -r _) { 408 } elsif (-f _ && -r _) {
355 -x _ and $self->err(403, "forbidden"); 409 -x _ and $self->err(403, "forbidden");
356 $self->handle_file; 410 $self->handle_file;
… …
371 $idx); 425 $idx);
372} 426}
373 427
374sub handle_file { 428sub handle_file {
375 my $self = shift; 429 my $self = shift;
376 my $length = -s _; 430 my $length = $self->{stat}[7];
431 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
377 my $hdr = { 432 my $hdr = {
378 "Last-Modified" => time2str ((stat _)[9]), 433 "Last-Modified" => time2str ((stat _)[9]),
379 }; 434 };
380 435
381 my @code = (200, "ok"); 436 my @code = (200, "ok");
… …
389 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 444 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
390 } else { 445 } else {
391 ($l, $h) = (0, $length - 1); 446 ($l, $h) = (0, $length - 1);
392 goto ignore; 447 goto ignore;
393 } 448 }
394 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 449 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
395 } 450 }
396 $hdr->{"Content-Range"} = "bytes */$length"; 451 $hdr->{"Content-Range"} = "bytes */$length";
452 $hdr->{"Content-Length"} = $length;
397 $self->err(416, "not satisfiable", $hdr); 453 $self->err(416, "not satisfiable", $hdr, "");
398 454
399satisfiable: 455satisfiable:
400 # check for segmented downloads 456 # check for segmented downloads
401 if ($l && $::NO_SEGMENTED) { 457 if ($l && $::NO_SEGMENTED) {
458 my $delay = $::PER_TIMEOUT + 15;
402 if (%{$uri{$self->{uri}}} > 1) { 459 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
403 $self->slog("segmented download refused\n"); 460 if ($delay <= 0) {
404 $self->err(400, "segmented downloads are not allowed"); 461 $self->err_segmented_download;
462 } else {
463 Coro::Event::do_timer(after => 4); $delay -= 4;
464 }
405 } 465 }
406 } 466 }
407 467
408 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 468 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
409 @code = (206, "partial content"); 469 @code = (206, "partial content");
… …
419 $hdr->{"Content-Length"} = $length; 479 $hdr->{"Content-Length"} = $length;
420 480
421 $self->response(@code, $hdr, ""); 481 $self->response(@code, $hdr, "");
422 482
423 if ($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 $self->{fh}->writable or return;
500
424 my ($fh, $buf); 501 my ($fh, $buf, $r);
502 my $current = $Coro::current;
425 open $fh, "<", $self->{path} 503 open $fh, "<", $self->{path}
426 or die "$self->{path}: late open failure ($!)"; 504 or die "$self->{path}: late open failure ($!)";
427 505
428 if ($l) {
429 sysseek $fh, $l, 0
430 or die "$self->{path}: cannot seek to $l ($!)";
431 }
432
433 $h -= $l - 1; 506 $h -= $l - 1;
434 507
508 if (0) {
509 if ($l) {
510 sysseek $fh, $l, 0;
511 }
512 }
513
435 while ($h > 0) { 514 while ($h > 0) {
515 if (0) {
436 $h -= sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h; 516 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
437 $self->{fh}->syswrite($buf) 517 or last;
518 } else {
519 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
520 $buf, 0, sub {
521 $r = $_[0];
522 Coro::ready($current);
523 });
524 &Coro::schedule;
525 last unless $r;
526 }
527 my $w = syswrite $self->{fh}, $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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