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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.17 by root, Wed Aug 15 03:06:21 2001 UTC vs.
Revision 1.89 by root, Sun Jan 24 20:44:34 2010 UTC

1use Coro; 1use Coro;
2use Coro::Semaphore; 2use Coro::Semaphore;
3use Coro::Event; 3use Coro::EV;
4use Coro::Socket; 4use Coro::Socket;
5use Coro::Signal;
6use Coro::AIO ();
7
8use HTTP::Date;
9use POSIX ();
10
11use Compress::Zlib ();
5 12
6no utf8; 13no utf8;
7use bytes; 14use bytes;
8 15
9# at least on my machine, this thingy serves files 16# at least on my machine, this thingy serves files
10# quite a bit faster than apache, ;) 17# quite a bit faster than apache, ;)
11# and quite a bit slower than thttpd :( 18# and quite a bit slower than thttpd :(
12 19
13$SIG{PIPE} = 'IGNORE'; 20$SIG{PIPE} = 'IGNORE';
14 21
22our $accesslog;
23our $errorlog;
24
25our $NOW;
26our $HTTP_NOW;
27
28our $ERROR_LOG;
29our $ACCESS_LOG;
30
31our $update_time = EV::periodic 0, 1, undef, sub {
32 $NOW = time;
33 $HTTP_NOW = time2str $NOW;
34};
35$update_time->invoke;
36
37if ($ERROR_LOG) {
38 use IO::Handle;
39 open $errorlog, ">>$ERROR_LOG"
40 or die "$ERROR_LOG: $!";
41 $errorlog->autoflush(1);
42}
43
44if ($ACCESS_LOG) {
45 use IO::Handle;
46 open $accesslog, ">>$ACCESS_LOG"
47 or die "$ACCESS_LOG: $!";
48 $accesslog->autoflush(1);
49}
50
15sub slog { 51sub slog {
16 my $level = shift; 52 my $level = shift;
17 my $format = shift; 53 my $format = shift;
54 my $NOW = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW);
18 printf "---: $format\n", @_; 55 printf "$NOW: $format\n", @_;
56 printf $errorlog "$NOW: $format\n", @_ if $errorlog;
19} 57}
20 58
21my $connections = new Coro::Semaphore $MAX_CONNECTS; 59our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
60our $httpevent = new Coro::Signal;
22 61
23my @newcons; 62our $queue_file = new transferqueue $MAX_TRANSFERS;
24my @pool; 63our $queue_index = new transferqueue 10;
25 64
26# one "execution thread" 65our $tbf_top = new tbf rate => $TBF_RATE || 100000;
27sub handler { 66
67my $unused_bytes = 0;
68my $unused_last = time;
69
70sub unused_bandwidth {
71 $unused_bytes += $_[0];
72 if ($unused_last < $NOW - 30 && $unused_bytes / ($NOW - $unused_last) > 50000) {
73 $unused_last = $NOW;
74 $unused_bytes = 0;
75 $queue_file->force_wake_next;
76 slog 1, "forced filetransfer due to unused bandwidth";
77 }
78}
79
80sub listen_on {
81 my $listen = $_[0];
82
83 push @listen_sockets, $listen;
84
85 # the "main thread"
86 async {
87 slog 1, "accepting connections";
28 while () { 88 while () {
29 my $new = pop @newcons; 89 $connections->down;
30 if ($new) { 90 my @conn = $listen->accept;
91 #slog 3, "accepted @$connections ".scalar(@pool);
92
93 async_pool {
31 eval { 94 eval {
32 conn->new(@$new)->handle; 95 conn->new (@conn)->handle;
33 }; 96 };
34 slog 1, "$@" if $@ && !ref $@; 97 slog 1, "$@" if $@ && !ref $@;
98
99 $httpevent->broadcast; # only for testing, but doesn't matter much
100
35 $connections->up; 101 $connections->up;
36 } else {
37 last if @pool >= $MAX_POOL;
38 push @pool, $Coro::current;
39 schedule;
40 } 102 }
103 }
41 } 104 };
42} 105}
43 106
44my $http_port = new Coro::Socket 107my $http_port = new Coro::Socket
45 LocalAddr => $SERVER_HOST, 108 LocalAddr => $SERVER_HOST,
46 LocalPort => $SERVER_PORT, 109 LocalPort => $SERVER_PORT,
47 ReuseAddr => 1, 110 ReuseAddr => 1,
48 Listen => 50, 111 Listen => 50,
49 or die "unable to start server"; 112 or die "unable to start server";
50 113
51push @listen_sockets, $http_port; 114listen_on $http_port;
52 115
53# the "main thread" 116if ($SERVER_PORT2) {
54async { 117 my $http_port = new Coro::Socket
55 slog 1, "accepting connections"; 118 LocalAddr => $SERVER_HOST,
56 while () { 119 LocalPort => $SERVER_PORT2,
57 $connections->down; 120 ReuseAddr => 1,
58 push @newcons, [$http_port->accept]; 121 Listen => 50,
59 #slog 3, "accepted @$connections ".scalar(@pool); 122 or die "unable to start server";
60 $::NOW = time;
61 if (@pool) {
62 (pop @pool)->ready;
63 } else {
64 async \&handler;
65 }
66 123
67 } 124 listen_on $http_port;
68}; 125}
69 126
70package conn; 127package conn;
128
129use strict;
130use bytes;
71 131
72use Socket; 132use Socket;
73use HTTP::Date; 133use HTTP::Date;
74use Convert::Scalar 'weaken'; 134use Convert::Scalar 'weaken';
75use Linux::AIO; 135use IO::AIO;
76 136
77Linux::AIO::min_parallel $::AIO_PARALLEL; 137IO::AIO::min_parallel $::AIO_PARALLEL;
78 138
79Event->io(fd => Linux::AIO::poll_fileno, 139our $AIO_WATCHER = EV::io IO::AIO::poll_fileno, EV::READ, \&IO::AIO::poll_cb;
80 poll => 'r', async => 1,
81 cb => \&Linux::AIO::poll_cb );
82 140
83Event->add_hooks(prepare => sub {
84 &Coro::cede;
85});
86
87our %conn; # $conn{ip}{fh} => connobj 141our %conn; # $conn{ip}{self} => connobj
142our %uri; # $uri{ip}{uri}{self}
88our %blocked; 143our %blocked;
89our %mimetype; 144our %mimetype;
90 145
91sub read_mimetypes { 146sub read_mimetypes {
92 local *M;
93 if (open M, "<mime_types") { 147 if (open my $fh, "<mime_types") {
94 while (<M>) { 148 while (<$fh>) {
95 if (/^([^#]\S+)\t+(\S+)$/) { 149 if (/^([^#]\S+)\t+(\S+)$/) {
96 $mimetype{lc $1} = $2; 150 $mimetype{lc $1} = $2;
97 } 151 }
98 } 152 }
99 } else { 153 } else {
… …
103 157
104read_mimetypes; 158read_mimetypes;
105 159
106sub new { 160sub new {
107 my $class = shift; 161 my $class = shift;
162 my $fh = shift;
108 my $peername = shift; 163 my $peername = shift;
109 my $fh = shift;
110 my $self = bless { fh => $fh }, $class; 164 my $self = bless { fh => $fh }, $class;
111 my (undef, $iaddr) = unpack_sockaddr_in $peername 165 my (undef, $iaddr) = unpack_sockaddr_in $peername
112 or $self->err(500, "unable to decode peername"); 166 or $self->err (500, "unable to decode peername");
113 167
168 $self->{remote_addr} =
114 $self->{remote_addr} = inet_ntoa $iaddr; 169 $self->{remote_id} = inet_ntoa $iaddr;
170
115 $self->{time} = $::NOW; 171 $self->{time} = $::NOW;
116 172
117 # enter ourselves into various lists 173 weaken ($Coro::current->{conn} = $self);
118 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
119 174
120 $::conns++; 175 ++$::conns;
176 $::maxconns = $::conns if $::conns > $::maxconns;
121 177
122 $self; 178 $self
123} 179}
124 180
125sub DESTROY { 181sub DESTROY {
126 my $self = shift; 182 my $self = shift;
127 183
128 $::conns--; 184 --$::conns;
129
130 delete $conn{$self->{remote_addr}}{$self*1};
131 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1};
132} 185}
186
187sub prune_cache {
188 my $hash = $_[0];
189
190 for (keys %$hash) {
191 if (ref $hash->{$_} eq HASH::) {
192 prune_cache($hash->{$_});
193 unless (scalar keys %{$hash->{$_}}) {
194 delete $hash->{$_};
195 }
196 }
197 }
198}
199
200sub prune_caches {
201 prune_cache \%conn;
202 prune_cache \%uri;
203
204 for (keys %blocked) {
205 delete $blocked{$_} unless $blocked{$_}[0] > $::NOW;
206 }
207}
208
209our $PRUNE_WATCHER = EV::timer 60, 60, \&prune_caches;
133 210
134sub slog { 211sub slog {
135 my $self = shift; 212 my $self = shift;
136 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 213 main::slog($_[0], "$self->{remote_id}> $_[1]");
137} 214}
138 215
139sub response { 216sub response {
140 my ($self, $code, $msg, $hdr, $content) = @_; 217 my ($self, $code, $msg, $hdr, $content) = @_;
141 my $res = "HTTP/1.1 $code $msg\015\012"; 218 my $res = "HTTP/1.1 $code $msg\015\012";
219 my $GZ = "";
142 220
143 #$res .= "Connection: close\015\012"; 221 if (exists $hdr->{Connection}) {
144 $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( 222 if ($hdr->{Connection} =~ /close/) {
223 $self->{h}{connection} = "close"
224 }
225 } else {
226 if ($self->{version} < 1.1) {
227 if ($self->{h}{connection} =~ /keep-alive/i) {
228 $hdr->{Connection} = "Keep-Alive";
229 } else {
230 $self->{h}{connection} = "close"
231 }
232 }
233 }
234
235 if ($self->{method} ne "HEAD"
236 && $self->{h}{"accept-encoding"} =~ /\bgzip\b/
237 && 400 < length $content
238 && $hdr->{"Content-Length"} == length $content
239 && !exists $hdr->{"Content-Encoding"}
240 ) {
241 my $orig = length $content;
242 $hdr->{"Content-Encoding"} = "gzip";
243 $content = Compress::Zlib::memGzip(\$content);
244 $hdr->{"Content-Length"} = length $content;
245 $GZ = sprintf "GZ%02d", 100 - 100*((length $content) / $orig);
246 }
247
248 $res .= "Date: $HTTP_NOW\015\012";
249 $res .= "Server: $::NAME\015\012";
145 250
146 while (my ($h, $v) = each %$hdr) { 251 while (my ($h, $v) = each %$hdr) {
147 $res .= "$h: $v\015\012" 252 $res .= "$h: $v\015\012"
148 } 253 }
149 $res .= "\015\012"; 254 $res .= "\015\012";
150 255
151 $res .= $content if defined $content and $self->{method} ne "HEAD"; 256 $res .= $content if defined $content and $self->{method} ne "HEAD";
152 257
153 print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# 258 my $log = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW).
259 " $self->{remote_id} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}.$GZ.
260 " \"$self->{h}{referer}\"\n";
154 261
155 $self->{written} += 262 print $::accesslog $log if $::accesslog;
156 print {$self->{fh}} $res; 263 print STDERR $log;
264
265 $tbf_top->request(length $res, 1e6);
266 $self->{written} += print {$self->{fh}} $res;
157} 267}
158 268
159sub err { 269sub err {
160 my $self = shift; 270 my $self = shift;
161 my ($code, $msg, $hdr, $content) = @_; 271 my ($code, $msg, $hdr, $content) = @_;
162 272
163 unless (defined $content) { 273 unless (defined $content) {
164 $content = "$code $msg"; 274 $content = "$code $msg\n";
165 $hdr->{"Content-Type"} = "text/plain"; 275 $hdr->{"Content-Type"} = "text/plain";
166 $hdr->{"Content-Length"} = length $content; 276 $hdr->{"Content-Length"} = length $content;
167 } 277 }
168 $hdr->{"Connection"} = "close"; 278 $hdr->{"Connection"} = "close";
169 279
170 $self->response($code, $msg, $hdr, $content); 280 $self->response ($code, $msg, $hdr, $content);
171 281
172 die bless {}, err::; 282 die bless {}, err::
173}
174
175sub err_blocked {
176 my $self = shift;
177 my $ip = $self->{remote_addr};
178 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
179
180 Coro::Event::do_timer(after => 15);
181
182 $self->err(401, "too many connections",
183 {
184 "Content-Type" => "text/html",
185 "Retry-After" => $::BLOCKTIME
186 },
187 <<EOF);
188<html><p>
189You have been blocked because you opened too many connections. You
190may retry at</p>
191
192 <p><blockquote>$time.</blockquote></p>
193
194<p>Until then, each new access will renew the block. You might want to have a
195look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
196</html>
197EOF
198} 283}
199 284
200sub handle { 285sub handle {
201 my $self = shift; 286 my $self = shift;
202 my $fh = $self->{fh}; 287 my $fh = $self->{fh};
203 288
289 my $host;
290
204 $fh->timeout($::REQ_TIMEOUT); 291 $fh->timeout($::REQ_TIMEOUT);
205 while() { 292 while () {
206 $self->{reqs}++; 293 $self->{reqs}++;
207 294
208 # read request and parse first line 295 # read request and parse first line
209 my $req = $fh->readline("\015\012\015\012"); 296 my $req = $fh->readline("\015\012\015\012");
210 297
… …
217 } 304 }
218 305
219 $self->{h} = {}; 306 $self->{h} = {};
220 307
221 $fh->timeout($::RES_TIMEOUT); 308 $fh->timeout($::RES_TIMEOUT);
222 my $ip = $self->{remote_addr};
223
224 if ($blocked{$ip}) {
225 $self->err_blocked($blocked{$ip})
226 if $blocked{$ip} > $::NOW;
227
228 delete $blocked{$ip};
229 }
230
231 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
232 $self->slog(2, "blocked ip $ip");
233 $self->err_blocked;
234 }
235 309
236 $req =~ /^(?:\015\012)? 310 $req =~ /^(?:\015\012)?
237 (GET|HEAD) \040+ 311 (GET|HEAD) \040+
238 ([^\040]+) \040+ 312 ([^\040]+) \040+
239 HTTP\/([0-9]+\.[0-9]+) 313 HTTP\/([0-9]+\.[0-9]+)
… …
242 316
243 $self->{method} = $1; 317 $self->{method} = $1;
244 $self->{uri} = $2; 318 $self->{uri} = $2;
245 $self->{version} = $3; 319 $self->{version} = $3;
246 320
247 $3 eq "1.0" or $3 eq "1.1" 321 $3 =~ /^1\./
248 or $self->err(506, "http protocol version $3 not supported"); 322 or $self->err(506, "http protocol version $3 not supported");
249 323
250 # parse headers 324 # parse headers
251 { 325 {
252 my (%hdr, $h, $v); 326 my (%hdr, $h, $v);
253 327
254 $hdr{lc $1} .= ",$2" 328 $hdr{lc $1} .= ",$2"
255 while $req =~ /\G 329 while $req =~ /\G
256 ([^:\000-\040]+): 330 ([^:\000-\040]+):
257 [\008\040]* 331 [\011\040]*
258 ((?: [^\015\012]+ | \015\012[\008\040] )*) 332 ((?: [^\015\012]+ | \015\012[\011\040] )*)
259 \015\012 333 \015\012
260 /gxc; 334 /gxc;
261 335
262 $req =~ /\G\015\012$/ 336 $req =~ /\G\015\012$/
263 or $self->err(400, "bad request"); 337 or $self->err(400, "bad request");
264 338
265 $self->{h}{$h} = substr $v, 1 339 $self->{h}{$h} = substr $v, 1
266 while ($h, $v) = each %hdr; 340 while ($h, $v) = each %hdr;
267 } 341 }
268 342
343 # remote id should be unique per user
344 my $id = $self->{remote_addr};
345
346 if (exists $self->{h}{"client-ip"}) {
347 $id .= "[".$self->{h}{"client-ip"}."]";
348 } elsif (exists $self->{h}{"x-forwarded-for"}) {
349 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
350 }
351
352 $self->{remote_id} = $id;
353
354 weaken (local $conn{$id}{$self*1} = $self);
355
356 if ($blocked{$id}) {
357 $self->err_blocked
358 if $blocked{$id}[0] > $::NOW;
359
360 delete $blocked{$id};
361 }
362
363 # find out server name and port
364 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
365 $host = $1;
366 } else {
367 $host = $self->{h}{host};
368 }
369
370 if (defined $host) {
269 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 371 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
372 } else {
373 ($self->{server_port}, $host)
374 = unpack_sockaddr_in $self->{fh}->sockname
375 or $self->err(500, "unable to get socket name");
376 $host = inet_ntoa $host;
377 }
270 378
379 $self->{server_name} = $host;
380
271 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 381 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
272 382
383 eval {
273 $self->map_uri; 384 $self->map_uri;
274 $self->respond; 385 $self->respond;
386 };
275 387
388 die if $@ && !ref $@;
389
276 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 390 last if $self->{h}{connection} =~ /close/i;
277 391
278 $self->slog(9, "persistant connection [".$self->{h}{"user-agent"}."][$self->{reqs}]"); 392 $httpevent->broadcast;
393
279 $fh->timeout($::PER_TIMEOUT); 394 $fh->timeout($::PER_TIMEOUT);
280 } 395 }
396}
397
398sub block {
399 my $self = shift;
400
401 $blocked{$self->{remote_id}} = [$::NOW + $_[0], $_[1]];
402 $self->slog(2, "blocked ip $self->{remote_id}");
403 $self->err_blocked;
281} 404}
282 405
283# uri => path mapping 406# uri => path mapping
284sub map_uri { 407sub map_uri {
285 my $self = shift; 408 my $self = shift;
286 my $host = $self->{h}{host} || "default"; 409 my $host = $self->{server_name};
287 my $uri = $self->{uri}; 410 my $uri = $self->{uri};
411
412 $host =~ /[\/\\]/
413 and $self->err(400, "bad request");
288 414
289 # some massaging, also makes it more secure 415 # some massaging, also makes it more secure
290 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 416 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
291 $uri =~ s%//+%/%g; 417 $uri =~ s%//+%/%g;
292 $uri =~ s%/\.(?=/|$)%%g; 418 $uri =~ s%/\.(?=/|$)%%g;
… …
301 $self->{path} = "$::DOCROOT/$host$uri"; 427 $self->{path} = "$::DOCROOT/$host$uri";
302 428
303 $self->access_check; 429 $self->access_check;
304} 430}
305 431
306sub server_address {
307 my $self = shift;
308 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
309 or $self->err(500, "unable to get socket name");
310 ((inet_ntoa $iaddr), $port);
311}
312
313sub server_host {
314 my $self = shift;
315 if (exists $self->{h}{host}) {
316 return $self->{h}{host};
317 } else {
318 return (($self->server_address)[0]);
319 }
320}
321
322sub server_hostport {
323 my $self = shift;
324 my ($host, $port);
325 if (exists $self->{h}{host}) {
326 ($host, $port) = ($self->{h}{host}, $self->{server_port});
327 } else {
328 ($host, $port) = $self->server_address;
329 }
330 $port = $port == 80 ? "" : ":$port";
331 $host.$port;
332}
333
334sub _cgi { 432sub _cgi {
335 my $self = shift; 433 my $self = shift;
336 my $path = shift; 434 my $path = shift;
337 my $fh; 435 my $fh;
338 436
339 # no two-way xxx supported 437 # no two-way xxx supported
340 if (0 == fork) { 438 if (0 == fork) {
341 open STDOUT, ">&".fileno($self->{fh}); 439 open STDOUT, ">&".fileno($self->{fh});
342 if (chdir $::DOCROOT) { 440 if (chdir $::DOCROOT) {
343 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 441 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
344 $ENV{HTTP_HOST} = $self->server_host; 442 $ENV{HTTP_HOST} = $self->{server_name};
345 $ENV{HTTP_PORT} = $self->{server_host}; 443 $ENV{HTTP_PORT} = $self->{server_port};
346 $ENV{SCRIPT_NAME} = $self->{name}; 444 $ENV{SCRIPT_NAME} = $self->{name};
347 exec $path; 445 exec $path;
348 } 446 }
349 Coro::State::_exit(0); 447 Coro::State::_exit(0);
350 } else { 448 } else {
449 die;
351 } 450 }
451}
452
453sub server_hostport {
454 $_[0]{server_port} == 80
455 ? $_[0]{server_name}
456 : "$_[0]{server_name}:$_[0]{server_port}";
352} 457}
353 458
354sub respond { 459sub respond {
355 my $self = shift; 460 my $self = shift;
356 my $path = $self->{path}; 461 my $path = $self->{path};
357 462
358 stat $path 463 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
359 or $self->err(404, "not found"); 464 if ($::internal{$1}) {
360 465 $::internal{$1}->($self);
361 $self->{stat} = [stat _];
362
363 # idiotic netscape sends idiotic headers AGAIN
364 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
365 ? str2time $1 : 0;
366
367 if (-d _ && -r _) {
368 # directory
369 if ($path !~ /\/$/) {
370 # create a redirect to get the trailing "/"
371 my $host = $self->server_hostport;
372 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" });
373 } else { 466 } else {
467 $self->err (404, "not found");
468 }
469 } else {
470
471 Coro::AIO::aio_stat $path
472 and $self->err (404, "not found");
473
474 $self->{stat} = [stat _];
475
476 # idiotic netscape sends idiotic headers AGAIN
477 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
478 ? str2time $1 : 0;
479
480 if (-d _ && -r _) {
481 # directory
482 if ($path !~ /\/$/) {
483 # create a redirect to get the trailing "/"
484 # we don't try to avoid the :80
485 $self->err (301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
486 } else {
374 $ims < $self->{stat}[9] 487 $ims < $self->{stat}[9]
375 or $self->err(304, "not modified"); 488 or $self->err (304, "not modified");
376 489
377 if ($self->{method} eq "GET") {
378 if (-r "$path/index.html") { 490 if (-r "$path/index.html") {
491 # replace directory "size" by index.html filesize
379 $self->{path} .= "/index.html"; 492 $self->{stat} = [stat ($self->{path} .= "/index.html")];
380 $self->handle_file; 493 $self->handle_file ($queue_index, $tbf_top);
381 } else { 494 } else {
382 $self->handle_dir; 495 $self->handle_dir;
383 } 496 }
384 } 497 }
385 }
386 } elsif (-f _ && -r _) { 498 } elsif (-f _ && -r _) {
387 -x _ and $self->err(403, "forbidden"); 499 -x _ and $self->err (403, "forbidden");
388 $self->handle_file; 500
501 if (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
502 my $timeout = $::NOW + 10;
503 while (keys %{$conn{$self->{remote_id}}} > $::MAX_TRANSFERS_IP) {
504 if ($timeout < $::NOW) {
505 $self->block($::BLOCKTIME, "too many connections");
506 } else {
507 $httpevent->wait;
508 }
509 }
510 }
511
512 $self->handle_file ($queue_file, $tbf_top);
389 } else { 513 } else {
390 $self->err(404, "not found"); 514 $self->err (404, "not found");
515 }
391 } 516 }
392} 517}
393 518
394sub handle_dir { 519sub handle_dir {
395 my $self = shift; 520 my $self = shift;
396 my $idx = $self->diridx; 521 my $idx = $self->diridx;
397 522
398 $self->response(200, "ok", 523 $self->response (200, "ok",
399 { 524 {
400 "Content-Type" => "text/html", 525 "Content-Type" => "text/html; charset=utf-8",
401 "Content-Length" => length $idx, 526 "Content-Length" => length $idx,
527 "Last-Modified" => time2str ($self->{stat}[9]),
402 }, 528 },
403 $idx); 529 $idx);
404} 530}
405 531
406sub handle_file { 532sub handle_file {
407 my $self = shift; 533 my ($self, $queue, $tbf) = @_;
408 my $length = -s _; 534 my $length = $self->{stat}[7];
409 my $hdr = { 535 my $hdr = {
410 "Last-Modified" => time2str ((stat _)[9]), 536 "Last-Modified" => time2str ((stat _)[9]),
537 "Accept-Ranges" => "bytes",
411 }; 538 };
412 539
413 my @code = (200, "ok"); 540 my @code = (200, "ok");
414 my ($l, $h); 541 my ($l, $h);
415 542
416 if ($self->{h}{range} =~ /^bytes=(.*)$/) { 543 if ($self->{h}{range} =~ /^bytes=(.*)$/i) {
417 for (split /,/, $1) { 544 for (split /,/, $1) {
418 if (/^-(\d+)$/) { 545 if (/^-(\d+)$/) {
419 ($l, $h) = ($length - $1, $length - 1); 546 ($l, $h) = ($length - $1, $length - 1);
420 } elsif (/^(\d+)-(\d*)$/) { 547 } elsif (/^(\d+)-(\d*)$/) {
421 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 548 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
422 } else { 549 } else {
423 ($l, $h) = (0, $length - 1); 550 ($l, $h) = (0, $length - 1);
424 goto ignore; 551 goto ignore;
425 } 552 }
426 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 553 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
427 } 554 }
428 $hdr->{"Content-Range"} = "bytes */$length"; 555 $hdr->{"Content-Range"} = "bytes */$length";
556 $hdr->{"Content-Length"} = $length;
429 $self->err(416, "not satisfiable", $hdr); 557 $self->err (416, "not satisfiable", $hdr, "");
430 558
431satisfiable: 559satisfiable:
432 # check for segmented downloads 560 # check for segmented downloads
433 if ($l && $::NO_SEGMENTED) { 561 if ($l && $::NO_SEGMENTED) {
562 my $timeout = $::NOW + 15;
434 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 563 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
435 Coro::Event::do_timer(after => 15); 564 if ($timeout <= $::NOW) {
436 565 $self->block ($::BLOCKTIME, "segmented downloads are forbidden");
437 $self->err(400, "segmented downloads are not allowed"); 566 #$self->err_segmented_download;
567 } else {
568 $httpevent->wait;
569 }
438 } 570 }
439 } 571 }
440 572
441 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 573 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
442 @code = (206, "partial content"); 574 @code = (206, "partial content");
… …
449 581
450 $self->{path} =~ /\.([^.]+)$/; 582 $self->{path} =~ /\.([^.]+)$/;
451 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream"; 583 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream";
452 $hdr->{"Content-Length"} = $length; 584 $hdr->{"Content-Length"} = $length;
453 585
454 $self->response(@code, $hdr, ""); 586 $self->response (@code, $hdr, "");
455 587
456 if ($self->{method} eq "GET") { 588 if ($self->{method} eq "GET") {
457 my ($fh, $buf, $r); 589 $self->{time} = $::NOW;
458 my $current = $Coro::current; 590 $self->{written} = 0;
591
459 open $fh, "<", $self->{path} 592 open my $fh, "<", $self->{path}
460 or die "$self->{path}: late open failure ($!)"; 593 or die "$self->{path}: late open failure ($!)";
461 594
462 $h -= $l - 1; 595 $h -= $l - 1;
463 596
597 my $transfer = $queue->start_transfer ($h);
598 my $locked;
599 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
600
464 while ($h > 0) { 601 while ($h > 0) {
465 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 602 unless ($locked) {
466 $buf, 0, sub { 603 if ($locked ||= $transfer->try ($::WAIT_INTERVAL)) {
467 $r = $_[0]; 604 $bufsize = $::BUFSIZE;
468 $current->ready; 605 $self->{time} = $::NOW;
606 $self->{written} = 0;
469 }); 607 }
470 &Coro::schedule; 608 }
471 last unless $r; 609
610 if ($blocked{$self->{remote_id}}) {
611 $self->{h}{connection} = "close";
612 die bless {}, err::;
613 }
614
615 Coro::AIO::aio_read $fh, $l, ($h > $bufsize ? $bufsize : $h), my $buf, 0
616 or last;
617
618 $tbf->request (length $buf);
472 my $w = $self->{fh}->syswrite($buf) 619 my $w = $self->{fh}->syswrite ($buf)
473 or last; 620 or last;
474 $::written += $w; 621 $::written += $w;
475 $self->{written} += $w; 622 $self->{written} += $w;
476 $l += $r; 623 $l += $w;
477 } 624 }
478 }
479 625
480 close $fh; 626 close $fh;
627 }
481} 628}
482 629
4831; 6301
631

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