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/cvs/cvsroot/Coro/myhttpd/httpd.pl
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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.13 by root, Sun Aug 12 01:16:48 2001 UTC vs.
Revision 1.88 by root, Thu Nov 20 14:33:57 2008 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';
135use IO::AIO;
75 136
137IO::AIO::min_parallel $::AIO_PARALLEL;
138
139our $AIO_WATCHER = EV::io IO::AIO::poll_fileno, EV::READ, \&IO::AIO::poll_cb;
140
76our %conn; # $conn{ip}{fh} => connobj 141our %conn; # $conn{ip}{self} => connobj
142our %uri; # $uri{ip}{uri}{self}
77our %blocked; 143our %blocked;
78our %mimetype; 144our %mimetype;
79 145
80sub read_mimetypes { 146sub read_mimetypes {
81 local *M;
82 if (open M, "<mime_types") { 147 if (open my $fh, "<mime_types") {
83 while (<M>) { 148 while (<$fh>) {
84 if (/^([^#]\S+)\t+(\S+)$/) { 149 if (/^([^#]\S+)\t+(\S+)$/) {
85 $mimetype{lc $1} = $2; 150 $mimetype{lc $1} = $2;
86 } 151 }
87 } 152 }
88 } else { 153 } else {
… …
92 157
93read_mimetypes; 158read_mimetypes;
94 159
95sub new { 160sub new {
96 my $class = shift; 161 my $class = shift;
162 my $fh = shift;
97 my $peername = shift; 163 my $peername = shift;
98 my $fh = shift;
99 my $self = bless { fh => $fh }, $class; 164 my $self = bless { fh => $fh }, $class;
100 my (undef, $iaddr) = unpack_sockaddr_in $peername 165 my (undef, $iaddr) = unpack_sockaddr_in $peername
101 or $self->err(500, "unable to decode peername"); 166 or $self->err (500, "unable to decode peername");
102 167
168 $self->{remote_addr} =
103 $self->{remote_addr} = inet_ntoa $iaddr; 169 $self->{remote_id} = inet_ntoa $iaddr;
170
104 $self->{time} = $::NOW; 171 $self->{time} = $::NOW;
105 172
106 # enter ourselves into various lists 173 weaken ($Coro::current->{conn} = $self);
107 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
108 174
109 $::conns++; 175 ++$::conns;
176 $::maxconns = $::conns if $::conns > $::maxconns;
110 177
111 $self; 178 $self
112} 179}
113 180
114sub DESTROY { 181sub DESTROY {
115 my $self = shift; 182 my $self = shift;
116 183
117 $::conns--; 184 --$::conns;
118
119 delete $conn{$self->{remote_addr}}{$self*1};
120 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1};
121} 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;
122 210
123sub slog { 211sub slog {
124 my $self = shift; 212 my $self = shift;
125 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 213 main::slog($_[0], "$self->{remote_id}> $_[1]");
126} 214}
127 215
128sub response { 216sub response {
129 my ($self, $code, $msg, $hdr, $content) = @_; 217 my ($self, $code, $msg, $hdr, $content) = @_;
130 my $res = "HTTP/1.0 $code $msg\015\012"; 218 my $res = "HTTP/1.1 $code $msg\015\012";
219 my $GZ = "";
131 220
132 $res .= "Connection: close\015\012"; 221 if (exists $hdr->{Connection}) {
133 $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: $::NAME\015\012";
134 250
135 while (my ($h, $v) = each %$hdr) { 251 while (my ($h, $v) = each %$hdr) {
136 $res .= "$h: $v\015\012" 252 $res .= "$h: $v\015\012"
137 } 253 }
138 $res .= "\015\012"; 254 $res .= "\015\012";
139 255
140 $res .= $content if defined $content and $self->{method} ne "HEAD"; 256 $res .= $content if defined $content and $self->{method} ne "HEAD";
141 257
142 print STDERR "$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";
143 261
144 $self->{written} += 262 print $::accesslog $log if $::accesslog;
145 print {$self->{fh}} $res; 263 print STDERR $log;
264
265 $tbf_top->request(length $res, 1e6);
266 $self->{written} += print {$self->{fh}} $res;
146} 267}
147 268
148sub err { 269sub err {
149 my $self = shift; 270 my $self = shift;
150 my ($code, $msg, $hdr, $content) = @_; 271 my ($code, $msg, $hdr, $content) = @_;
151 272
152 unless (defined $content) { 273 unless (defined $content) {
153 $content = "$code $msg"; 274 $content = "$code $msg\n";
154 $hdr->{"Content-Type"} = "text/plain"; 275 $hdr->{"Content-Type"} = "text/plain";
155 $hdr->{"Content-Length"} = length $content; 276 $hdr->{"Content-Length"} = length $content;
156 } 277 }
278 $hdr->{"Connection"} = "close";
157 279
158 $self->response($code, $msg, $hdr, $content); 280 $self->response ($code, $msg, $hdr, $content);
159 281
160 die bless {}, err::; 282 die bless {}, err::
161}
162
163sub err_blocked {
164 my $self = shift;
165 my $ip = $self->{remote_addr};
166 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
167
168 $self->err(403, "too many connections",
169 {
170 "Content-Type" => "text/html",
171 "Retry-After" => $::BLOCKTIME
172 },
173 <<EOF);
174<html><p>
175You have been blocked because you opened too many connections. You
176may retry at</p>
177
178 <p><blockquote>$time.</blockquote></p>
179
180<p>Until then, each new access will renew the block. You might want to have a
181look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
182</html>
183EOF
184} 283}
185 284
186sub handle { 285sub handle {
187 my $self = shift; 286 my $self = shift;
188 my $fh = $self->{fh}; 287 my $fh = $self->{fh};
189 288
289 my $host;
290
291 $fh->timeout($::REQ_TIMEOUT);
190 #while() { 292 while () {
293 $self->{reqs}++;
294
295 # read request and parse first line
296 my $req = $fh->readline("\015\012\015\012");
297
298 unless (defined $req) {
299 if (exists $self->{version}) {
300 last;
301 } else {
302 $self->err(408, "request timeout");
303 }
304 }
305
191 $self->{h} = {}; 306 $self->{h} = {};
192 307
193 # read request and parse first line
194 $fh->timeout($::REQ_TIMEOUT);
195 my $req = $fh->readline("\015\012\015\012");
196 $fh->timeout($::RES_TIMEOUT); 308 $fh->timeout($::RES_TIMEOUT);
197
198 defined $req or
199 $self->err(408, "request timeout");
200
201 my $ip = $self->{remote_addr};
202
203 if ($blocked{$ip}) {
204 $self->err_blocked($blocked{$ip})
205 if $blocked{$ip} > $::NOW;
206
207 delete $blocked{$ip};
208 }
209
210 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
211 $self->slog(2, "blocked ip $ip");
212 $self->err_blocked;
213 }
214 309
215 $req =~ /^(?:\015\012)? 310 $req =~ /^(?:\015\012)?
216 (GET|HEAD) \040+ 311 (GET|HEAD) \040+
217 ([^\040]+) \040+ 312 ([^\040]+) \040+
218 HTTP\/([0-9]+\.[0-9]+) 313 HTTP\/([0-9]+\.[0-9]+)
219 \015\012/gx 314 \015\012/gx
220 or $self->err(403, "method not allowed", { Allow => "GET,HEAD" }); 315 or $self->err(405, "method not allowed", { Allow => "GET,HEAD" });
221
222 $2 ne "1.0"
223 or $self->err(506, "http protocol version not supported");
224 316
225 $self->{method} = $1; 317 $self->{method} = $1;
226 $self->{uri} = $2; 318 $self->{uri} = $2;
319 $self->{version} = $3;
320
321 $3 =~ /^1\./
322 or $self->err(506, "http protocol version $3 not supported");
227 323
228 # parse headers 324 # parse headers
229 { 325 {
230 my (%hdr, $h, $v); 326 my (%hdr, $h, $v);
231 327
232 $hdr{lc $1} .= ",$2" 328 $hdr{lc $1} .= ",$2"
233 while $req =~ /\G 329 while $req =~ /\G
234 ([^:\000-\040]+): 330 ([^:\000-\040]+):
235 [\008\040]* 331 [\011\040]*
236 ((?: [^\015\012]+ | \015\012[\008\040] )*) 332 ((?: [^\015\012]+ | \015\012[\011\040] )*)
237 \015\012 333 \015\012
238 /gxc; 334 /gxc;
239 335
240 $req =~ /\G\015\012$/ 336 $req =~ /\G\015\012$/
241 or $self->err(400, "bad request"); 337 or $self->err(400, "bad request");
242 338
243 $self->{h}{$h} = substr $v, 1 339 $self->{h}{$h} = substr $v, 1
244 while ($h, $v) = each %hdr; 340 while ($h, $v) = each %hdr;
245 } 341 }
246 342
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) {
247 $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 }
248 378
379 $self->{server_name} = $host;
380
249 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 381 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
250 382
383 eval {
251 $self->map_uri; 384 $self->map_uri;
252 $self->respond; 385 $self->respond;
386 };
387
388 die if $@ && !ref $@;
389
390 last if $self->{h}{connection} =~ /close/i;
391
392 $httpevent->broadcast;
393
394 $fh->timeout($::PER_TIMEOUT);
253 #} 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;
254} 404}
255 405
256# uri => path mapping 406# uri => path mapping
257sub map_uri { 407sub map_uri {
258 my $self = shift; 408 my $self = shift;
259 my $host = $self->{h}{host} || "default"; 409 my $host = $self->{server_name};
260 my $uri = $self->{uri}; 410 my $uri = $self->{uri};
411
412 $host =~ /[\/\\]/
413 and $self->err(400, "bad request");
261 414
262 # some massaging, also makes it more secure 415 # some massaging, also makes it more secure
263 $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;
264 $uri =~ s%//+%/%g; 417 $uri =~ s%//+%/%g;
265 $uri =~ s%/\.(?=/|$)%%g; 418 $uri =~ s%/\.(?=/|$)%%g;
… …
274 $self->{path} = "$::DOCROOT/$host$uri"; 427 $self->{path} = "$::DOCROOT/$host$uri";
275 428
276 $self->access_check; 429 $self->access_check;
277} 430}
278 431
279sub server_address {
280 my $self = shift;
281 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
282 or $self->err(500, "unable to get socket name");
283 ((inet_ntoa $iaddr), $port);
284}
285
286sub server_host {
287 my $self = shift;
288 if (exists $self->{h}{host}) {
289 return $self->{h}{host};
290 } else {
291 return (($self->server_address)[0]);
292 }
293}
294
295sub server_hostport {
296 my $self = shift;
297 my ($host, $port);
298 if (exists $self->{h}{host}) {
299 ($host, $port) = ($self->{h}{host}, $self->{server_port});
300 } else {
301 ($host, $port) = $self->server_address;
302 }
303 $port = $port == 80 ? "" : ":$port";
304 $host.$port;
305}
306
307sub _cgi { 432sub _cgi {
308 my $self = shift; 433 my $self = shift;
309 my $path = shift; 434 my $path = shift;
310 my $fh; 435 my $fh;
311 436
312 # no two-way xxx supported 437 # no two-way xxx supported
313 if (0 == fork) { 438 if (0 == fork) {
314 open STDOUT, ">&".fileno($self->{fh}); 439 open STDOUT, ">&".fileno($self->{fh});
315 if (chdir $::DOCROOT) { 440 if (chdir $::DOCROOT) {
316 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 441 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
317 $ENV{HTTP_HOST} = $self->server_host; 442 $ENV{HTTP_HOST} = $self->{server_name};
318 $ENV{HTTP_PORT} = $self->{server_host}; 443 $ENV{HTTP_PORT} = $self->{server_port};
319 $ENV{SCRIPT_NAME} = $self->{name}; 444 $ENV{SCRIPT_NAME} = $self->{name};
320 exec $path; 445 exec $path;
321 } 446 }
322 Coro::State::_exit(0); 447 Coro::State::_exit(0);
323 } else { 448 } else {
449 die;
324 } 450 }
451}
452
453sub server_hostport {
454 $_[0]{server_port} == 80
455 ? $_[0]{server_name}
456 : "$_[0]{server_name}:$_[0]{server_port}";
325} 457}
326 458
327sub respond { 459sub respond {
328 my $self = shift; 460 my $self = shift;
329 my $path = $self->{path}; 461 my $path = $self->{path};
330 462
331 stat $path 463 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
332 or $self->err(404, "not found"); 464 if ($::internal{$1}) {
333 465 $::internal{$1}->($self);
334 $self->{stat} = [stat _];
335
336 # idiotic netscape sends idiotic headers AGAIN
337 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
338 ? str2time $1 : 0;
339
340 if (-d _ && -r _) {
341 # directory
342 if ($path !~ /\/$/) {
343 # create a redirect to get the trailing "/"
344 my $host = $self->server_hostport;
345 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" });
346 } else { 466 } else {
467 $self->err (404, "not found");
468 }
469 } else {
470
471 stat $path
472 or $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 {
347 $ims < $self->{stat}[9] 487 $ims < $self->{stat}[9]
348 or $self->err(304, "not modified"); 488 or $self->err (304, "not modified");
349 489
350 if ($self->{method} eq "GET") {
351 if (-r "$path/index.html") { 490 if (-r "$path/index.html") {
491 # replace directory "size" by index.html filesize
352 $self->{path} .= "/index.html"; 492 $self->{stat} = [stat ($self->{path} .= "/index.html")];
353 $self->handle_file; 493 $self->handle_file ($queue_index, $tbf_top);
354 } else { 494 } else {
355 $self->handle_dir; 495 $self->handle_dir;
356 } 496 }
357 } 497 }
358 }
359 } elsif (-f _ && -r _) { 498 } elsif (-f _ && -r _) {
360 -x _ and $self->err(403, "forbidden"); 499 -x _ and $self->err (403, "forbidden");
361 $self->handle_file; 500
501 if (keys %{$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);
362 } else { 513 } else {
363 $self->err(404, "not found"); 514 $self->err (404, "not found");
515 }
364 } 516 }
365} 517}
366 518
367sub handle_dir { 519sub handle_dir {
368 my $self = shift; 520 my $self = shift;
369 my $idx = $self->diridx; 521 my $idx = $self->diridx;
370 522
371 $self->response(200, "ok", 523 $self->response (200, "ok",
372 { 524 {
373 "Content-Type" => "text/html", 525 "Content-Type" => "text/html; charset=utf-8",
374 "Content-Length" => length $idx, 526 "Content-Length" => length $idx,
527 "Last-Modified" => time2str ($self->{stat}[9]),
375 }, 528 },
376 $idx); 529 $idx);
377} 530}
378 531
379sub handle_file { 532sub handle_file {
380 my $self = shift; 533 my ($self, $queue, $tbf) = @_;
381 my $length = -s _; 534 my $length = $self->{stat}[7];
382 my $hdr = { 535 my $hdr = {
383 "Last-Modified" => time2str ((stat _)[9]), 536 "Last-Modified" => time2str ((stat _)[9]),
537 "Accept-Ranges" => "bytes",
384 }; 538 };
385 539
386 my @code = (200, "ok"); 540 my @code = (200, "ok");
387 my ($l, $h); 541 my ($l, $h);
388 542
389 if ($self->{h}{range} =~ /^bytes=(.*)$/) { 543 if ($self->{h}{range} =~ /^bytes=(.*)$/i) {
390 for (split /,/, $1) { 544 for (split /,/, $1) {
391 if (/^-(\d+)$/) { 545 if (/^-(\d+)$/) {
392 ($l, $h) = ($length - $1, $length - 1); 546 ($l, $h) = ($length - $1, $length - 1);
393 } elsif (/^(\d+)-(\d*)$/) { 547 } elsif (/^(\d+)-(\d*)$/) {
394 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 548 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
395 } else { 549 } else {
396 ($l, $h) = (0, $length - 1); 550 ($l, $h) = (0, $length - 1);
397 goto ignore; 551 goto ignore;
398 } 552 }
399 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 553 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
400 } 554 }
401 $hdr->{"Content-Range"} = "bytes */$length"; 555 $hdr->{"Content-Range"} = "bytes */$length";
556 $hdr->{"Content-Length"} = $length;
402 $self->err(416, "not satisfiable", $hdr); 557 $self->err (416, "not satisfiable", $hdr, "");
403 558
404satisfiable: 559satisfiable:
405 # check for segmented downloads 560 # check for segmented downloads
406 if ($l && $::NO_SEGMENTED) { 561 if ($l && $::NO_SEGMENTED) {
562 my $timeout = $::NOW + 15;
407 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 563 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
408 $self->err(400, "segmented downloads are not allowed"); 564 if ($timeout <= $::NOW) {
565 $self->block ($::BLOCKTIME, "segmented downloads are forbidden");
566 #$self->err_segmented_download;
567 } else {
568 $httpevent->wait;
569 }
409 } 570 }
410 } 571 }
411 572
412 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 573 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
413 @code = (206, "partial content"); 574 @code = (206, "partial content");
… …
420 581
421 $self->{path} =~ /\.([^.]+)$/; 582 $self->{path} =~ /\.([^.]+)$/;
422 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream"; 583 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream";
423 $hdr->{"Content-Length"} = $length; 584 $hdr->{"Content-Length"} = $length;
424 585
425 $self->response(@code, $hdr, ""); 586 $self->response (@code, $hdr, "");
426 587
427 if ($self->{method} eq "GET") { 588 if ($self->{method} eq "GET") {
428 my ($fh, $buf); 589 $self->{time} = $::NOW;
590 $self->{written} = 0;
591
429 open $fh, "<", $self->{path} 592 open my $fh, "<", $self->{path}
430 or die "$self->{path}: late open failure ($!)"; 593 or die "$self->{path}: late open failure ($!)";
431 594
432 if ($l) {
433 sysseek $fh, $l, 0
434 or die "$self->{path}: cannot seek to $l ($!)";
435 }
436
437 $h -= $l - 1; 595 $h -= $l - 1;
438 596
597 my $transfer = $queue->start_transfer ($h);
598 my $locked;
599 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
600
439 while ($h > 0) { 601 while ($h > 0) {
440 $h -= sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h; 602 unless ($locked) {
603 if ($locked ||= $transfer->try ($::WAIT_INTERVAL)) {
604 $bufsize = $::BUFSIZE;
605 $self->{time} = $::NOW;
606 $self->{written} = 0;
607 }
608 }
609
610 if ($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);
441 my $w = $self->{fh}->syswrite($buf) 619 my $w = $self->{fh}->syswrite ($buf)
442 or last; 620 or last;
443 $::written += $w; 621 $::written += $w;
444 $self->{written} += $w; 622 $self->{written} += $w;
623 $l += $w;
445 } 624 }
446 }
447 625
448 close $fh; 626 close $fh;
627 }
449} 628}
450 629
4511; 6301
631

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