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/cvs/cvsroot/Coro/myhttpd/httpd.pl
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Comparing cvsroot/Coro/myhttpd/httpd.pl (file contents):
Revision 1.27 by root, Sun Aug 19 23:57:52 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
… …
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
15our $accesslog; 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 $errorlog->autoflush(1);
42}
16 43
17if ($ACCESS_LOG) { 44if ($ACCESS_LOG) {
18 use IO::Handle; 45 use IO::Handle;
19 open $accesslog, ">>$ACCESS_LOG" 46 open $accesslog, ">>$ACCESS_LOG"
20 or die "$ACCESS_LOG: $!"; 47 or die "$ACCESS_LOG: $!";
… …
22} 49}
23 50
24sub slog { 51sub slog {
25 my $level = shift; 52 my $level = shift;
26 my $format = shift; 53 my $format = shift;
54 my $NOW = (POSIX::strftime "%Y-%m-%d %H:%M:%S", gmtime $::NOW);
27 printf "---: $format\n", @_; 55 printf "$NOW: $format\n", @_;
56 printf $errorlog "$NOW: $format\n", @_ if $errorlog;
28} 57}
29 58
30my $connections = new Coro::Semaphore $MAX_CONNECTS; 59our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
60our $httpevent = new Coro::Signal;
31 61
32my @newcons; 62our $queue_file = new transferqueue $MAX_TRANSFERS;
33my @pool; 63our $queue_index = new transferqueue 10;
34 64
35# one "execution thread" 65our $tbf_top = new tbf rate => $TBF_RATE || 100000;
36sub 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";
37 while () { 88 while () {
38 my $new = pop @newcons; 89 $connections->down;
39 if ($new) { 90 my @conn = $listen->accept;
91 #slog 3, "accepted @$connections ".scalar(@pool);
92
93 async_pool {
40 eval { 94 eval {
41 conn->new(@$new)->handle; 95 conn->new (@conn)->handle;
42 }; 96 };
43 slog 1, "$@" if $@ && !ref $@; 97 slog 1, "$@" if $@ && !ref $@;
98
99 $httpevent->broadcast; # only for testing, but doesn't matter much
100
44 $connections->up; 101 $connections->up;
45 } else {
46 last if @pool >= $MAX_POOL;
47 push @pool, $Coro::current;
48 schedule;
49 } 102 }
103 }
50 } 104 };
51} 105}
52 106
53my $http_port = new Coro::Socket 107my $http_port = new Coro::Socket
54 LocalAddr => $SERVER_HOST, 108 LocalAddr => $SERVER_HOST,
55 LocalPort => $SERVER_PORT, 109 LocalPort => $SERVER_PORT,
56 ReuseAddr => 1, 110 ReuseAddr => 1,
57 Listen => 50, 111 Listen => 50,
58 or die "unable to start server"; 112 or die "unable to start server";
59 113
60push @listen_sockets, $http_port; 114listen_on $http_port;
61 115
62# the "main thread" 116if ($SERVER_PORT2) {
63async { 117 my $http_port = new Coro::Socket
64 slog 1, "accepting connections"; 118 LocalAddr => $SERVER_HOST,
65 while () { 119 LocalPort => $SERVER_PORT2,
66 $connections->down; 120 ReuseAddr => 1,
67 push @newcons, [$http_port->accept]; 121 Listen => 50,
68 #slog 3, "accepted @$connections ".scalar(@pool); 122 or die "unable to start server";
69 $::NOW = time;
70 if (@pool) {
71 (pop @pool)->ready;
72 } else {
73 async \&handler;
74 }
75 123
76 } 124 listen_on $http_port;
77}; 125}
78 126
79package conn; 127package conn;
128
129use strict;
130use bytes;
80 131
81use Socket; 132use Socket;
82use HTTP::Date; 133use HTTP::Date;
83use Convert::Scalar 'weaken'; 134use Convert::Scalar 'weaken';
84use Linux::AIO; 135use IO::AIO;
85 136
86Linux::AIO::min_parallel $::AIO_PARALLEL; 137IO::AIO::min_parallel $::AIO_PARALLEL;
87 138
88Event->io(fd => Linux::AIO::poll_fileno, 139our $AIO_WATCHER = EV::io IO::AIO::poll_fileno, EV::READ, \&IO::AIO::poll_cb;
89 poll => 'r', async => 1,
90 cb => \&Linux::AIO::poll_cb);
91 140
92our %conn; # $conn{ip}{self} => connobj 141our %conn; # $conn{ip}{self} => connobj
93our %uri; # $uri{ip}{uri}{self} 142our %uri; # $uri{ip}{uri}{self}
94our %blocked; 143our %blocked;
95our %mimetype; 144our %mimetype;
96 145
97sub read_mimetypes { 146sub read_mimetypes {
98 local *M;
99 if (open M, "<mime_types") { 147 if (open my $fh, "<mime_types") {
100 while (<M>) { 148 while (<$fh>) {
101 if (/^([^#]\S+)\t+(\S+)$/) { 149 if (/^([^#]\S+)\t+(\S+)$/) {
102 $mimetype{lc $1} = $2; 150 $mimetype{lc $1} = $2;
103 } 151 }
104 } 152 }
105 } else { 153 } else {
… …
109 157
110read_mimetypes; 158read_mimetypes;
111 159
112sub new { 160sub new {
113 my $class = shift; 161 my $class = shift;
162 my $fh = shift;
114 my $peername = shift; 163 my $peername = shift;
115 my $fh = shift;
116 my $self = bless { fh => $fh }, $class; 164 my $self = bless { fh => $fh }, $class;
117 my (undef, $iaddr) = unpack_sockaddr_in $peername 165 my (undef, $iaddr) = unpack_sockaddr_in $peername
118 or $self->err(500, "unable to decode peername"); 166 or $self->err (500, "unable to decode peername");
119 167
168 $self->{remote_addr} =
120 $self->{remote_addr} = inet_ntoa $iaddr; 169 $self->{remote_id} = inet_ntoa $iaddr;
170
121 $self->{time} = $::NOW; 171 $self->{time} = $::NOW;
122 172
123 # enter ourselves into various lists 173 weaken ($Coro::current->{conn} = $self);
124 weaken ($conn{$self->{remote_addr}}{$self*1} = $self);
125 174
126 $::conns++; 175 ++$::conns;
176 $::maxconns = $::conns if $::conns > $::maxconns;
127 177
128 $self; 178 $self
129} 179}
130 180
131sub DESTROY { 181sub DESTROY {
132 my $self = shift; 182 my $self = shift;
133 183
134 $::conns--; 184 --$::conns;
135
136 $self->eoconn;
137 delete $conn{$self->{remote_addr}}{$self*1};
138} 185}
139 186
140# end of connection 187sub prune_cache {
141sub eoconn { 188 my $hash = $_[0];
142 my $self = shift; 189
143 delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; 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 }
144} 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;
145 210
146sub slog { 211sub slog {
147 my $self = shift; 212 my $self = shift;
148 main::slog($_[0], "$self->{remote_addr}> $_[1]"); 213 main::slog($_[0], "$self->{remote_id}> $_[1]");
149} 214}
150 215
151sub response { 216sub response {
152 my ($self, $code, $msg, $hdr, $content) = @_; 217 my ($self, $code, $msg, $hdr, $content) = @_;
153 my $res = "HTTP/1.1 $code $msg\015\012"; 218 my $res = "HTTP/1.1 $code $msg\015\012";
219 my $GZ = "";
154 220
155 #$res .= "Connection: close\015\012"; 221 if (exists $hdr->{Connection}) {
156 $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: $::NAME\015\012";
157 250
158 while (my ($h, $v) = each %$hdr) { 251 while (my ($h, $v) = each %$hdr) {
159 $res .= "$h: $v\015\012" 252 $res .= "$h: $v\015\012"
160 } 253 }
161 $res .= "\015\012"; 254 $res .= "\015\012";
162 255
163 $res .= $content if defined $content and $self->{method} ne "HEAD"; 256 $res .= $content if defined $content and $self->{method} ne "HEAD";
164 257
165 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n"; 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";
166 261
167 print $accesslog $log if $accesslog; 262 print $::accesslog $log if $::accesslog;
168 print STDERR $log; 263 print STDERR $log;
169 264
170 $self->{written} += 265 $tbf_top->request(length $res, 1e6);
171 print {$self->{fh}} $res; 266 $self->{written} += print {$self->{fh}} $res;
172} 267}
173 268
174sub err { 269sub err {
175 my $self = shift; 270 my $self = shift;
176 my ($code, $msg, $hdr, $content) = @_; 271 my ($code, $msg, $hdr, $content) = @_;
177 272
178 unless (defined $content) { 273 unless (defined $content) {
179 $content = "$code $msg"; 274 $content = "$code $msg\n";
180 $hdr->{"Content-Type"} = "text/plain"; 275 $hdr->{"Content-Type"} = "text/plain";
181 $hdr->{"Content-Length"} = length $content; 276 $hdr->{"Content-Length"} = length $content;
182 } 277 }
183 $hdr->{"Connection"} = "close"; 278 $hdr->{"Connection"} = "close";
184 279
185 $self->response($code, $msg, $hdr, $content); 280 $self->response ($code, $msg, $hdr, $content);
186 281
187 die bless {}, err::; 282 die bless {}, err::
188}
189
190sub err_blocked {
191 my $self = shift;
192 my $ip = $self->{remote_addr};
193 my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME;
194
195 Coro::Event::do_timer(after => 20*rand);
196
197 $self->err(401, "too many connections",
198 {
199 "Content-Type" => "text/html",
200 "Retry-After" => $::BLOCKTIME,
201 "Warning" => "Please do NOT retry, you have been blocked",
202 "WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"",
203 },
204 <<EOF);
205<html>
206<head>
207<title>Too many connections</title>
208</head>
209<body bgcolor="#ffffff" text="#000000" link="#0000ff" vlink="#000080" alink="#ff0000">
210
211<p>You have been blocked because you opened too many connections. You
212may retry at</p>
213
214 <p><blockquote>$time.</blockquote></p>
215
216<p>Until then, each new access will renew the block. You might want to have a
217look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p>
218
219</body></html>
220EOF
221} 283}
222 284
223sub handle { 285sub handle {
224 my $self = shift; 286 my $self = shift;
225 my $fh = $self->{fh}; 287 my $fh = $self->{fh};
226 288
289 my $host;
290
227 $fh->timeout($::REQ_TIMEOUT); 291 $fh->timeout($::REQ_TIMEOUT);
228 while() { 292 while () {
229 $self->{reqs}++; 293 $self->{reqs}++;
230 294
231 # read request and parse first line 295 # read request and parse first line
232 my $req = $fh->readline("\015\012\015\012"); 296 my $req = $fh->readline("\015\012\015\012");
233 297
… …
240 } 304 }
241 305
242 $self->{h} = {}; 306 $self->{h} = {};
243 307
244 $fh->timeout($::RES_TIMEOUT); 308 $fh->timeout($::RES_TIMEOUT);
245 my $ip = $self->{remote_addr};
246
247 if ($blocked{$ip}) {
248 $self->err_blocked($blocked{$ip})
249 if $blocked{$ip} > $::NOW;
250
251 delete $blocked{$ip};
252 }
253
254 if (%{$conn{$ip}} > $::MAX_CONN_IP) {
255 $self->slog(2, "blocked ip $ip");
256 $self->err_blocked;
257 }
258 309
259 $req =~ /^(?:\015\012)? 310 $req =~ /^(?:\015\012)?
260 (GET|HEAD) \040+ 311 (GET|HEAD) \040+
261 ([^\040]+) \040+ 312 ([^\040]+) \040+
262 HTTP\/([0-9]+\.[0-9]+) 313 HTTP\/([0-9]+\.[0-9]+)
… …
275 my (%hdr, $h, $v); 326 my (%hdr, $h, $v);
276 327
277 $hdr{lc $1} .= ",$2" 328 $hdr{lc $1} .= ",$2"
278 while $req =~ /\G 329 while $req =~ /\G
279 ([^:\000-\040]+): 330 ([^:\000-\040]+):
280 [\008\040]* 331 [\011\040]*
281 ((?: [^\015\012]+ | \015\012[\008\040] )*) 332 ((?: [^\015\012]+ | \015\012[\011\040] )*)
282 \015\012 333 \015\012
283 /gxc; 334 /gxc;
284 335
285 $req =~ /\G\015\012$/ 336 $req =~ /\G\015\012$/
286 or $self->err(400, "bad request"); 337 or $self->err(400, "bad request");
287 338
288 $self->{h}{$h} = substr $v, 1 339 $self->{h}{$h} = substr $v, 1
289 while ($h, $v) = each %hdr; 340 while ($h, $v) = each %hdr;
290 } 341 }
291 342
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) {
292 $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 }
293 378
379 $self->{server_name} = $host;
380
294 weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); 381 weaken (local $uri{$id}{$self->{uri}}{$self*1} = $self);
295 382
296 eval { 383 eval {
297 $self->map_uri; 384 $self->map_uri;
298 $self->respond; 385 $self->respond;
299 }; 386 };
300 387
301 $self->eoconn;
302
303 die if $@ && !ref $@; 388 die if $@ && !ref $@;
304 389
305 last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; 390 last if $self->{h}{connection} =~ /close/i;
306 391
307 $self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]"); 392 $httpevent->broadcast;
393
308 $fh->timeout($::PER_TIMEOUT); 394 $fh->timeout($::PER_TIMEOUT);
309 } 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;
310} 404}
311 405
312# uri => path mapping 406# uri => path mapping
313sub map_uri { 407sub map_uri {
314 my $self = shift; 408 my $self = shift;
315 my $host = $self->{h}{host} || "default"; 409 my $host = $self->{server_name};
316 my $uri = $self->{uri}; 410 my $uri = $self->{uri};
411
412 $host =~ /[\/\\]/
413 and $self->err(400, "bad request");
317 414
318 # some massaging, also makes it more secure 415 # some massaging, also makes it more secure
319 $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;
320 $uri =~ s%//+%/%g; 417 $uri =~ s%//+%/%g;
321 $uri =~ s%/\.(?=/|$)%%g; 418 $uri =~ s%/\.(?=/|$)%%g;
… …
330 $self->{path} = "$::DOCROOT/$host$uri"; 427 $self->{path} = "$::DOCROOT/$host$uri";
331 428
332 $self->access_check; 429 $self->access_check;
333} 430}
334 431
335sub server_address {
336 my $self = shift;
337 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
338 or $self->err(500, "unable to get socket name");
339 ((inet_ntoa $iaddr), $port);
340}
341
342sub server_host {
343 my $self = shift;
344 if (exists $self->{h}{host}) {
345 return $self->{h}{host};
346 } else {
347 return (($self->server_address)[0]);
348 }
349}
350
351sub server_hostport {
352 my $self = shift;
353 my ($host, $port);
354 if (exists $self->{h}{host}) {
355 ($host, $port) = ($self->{h}{host}, $self->{server_port});
356 } else {
357 ($host, $port) = $self->server_address;
358 }
359 $port = $port == 80 ? "" : ":$port";
360 $host.$port;
361}
362
363sub _cgi { 432sub _cgi {
364 my $self = shift; 433 my $self = shift;
365 my $path = shift; 434 my $path = shift;
366 my $fh; 435 my $fh;
367 436
368 # no two-way xxx supported 437 # no two-way xxx supported
369 if (0 == fork) { 438 if (0 == fork) {
370 open STDOUT, ">&".fileno($self->{fh}); 439 open STDOUT, ">&".fileno($self->{fh});
371 if (chdir $::DOCROOT) { 440 if (chdir $::DOCROOT) {
372 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 441 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
373 $ENV{HTTP_HOST} = $self->server_host; 442 $ENV{HTTP_HOST} = $self->{server_name};
374 $ENV{HTTP_PORT} = $self->{server_host}; 443 $ENV{HTTP_PORT} = $self->{server_port};
375 $ENV{SCRIPT_NAME} = $self->{name}; 444 $ENV{SCRIPT_NAME} = $self->{name};
376 exec $path; 445 exec $path;
377 } 446 }
378 Coro::State::_exit(0); 447 Coro::State::_exit(0);
379 } else { 448 } else {
449 die;
380 } 450 }
451}
452
453sub server_hostport {
454 $_[0]{server_port} == 80
455 ? $_[0]{server_name}
456 : "$_[0]{server_name}:$_[0]{server_port}";
381} 457}
382 458
383sub respond { 459sub respond {
384 my $self = shift; 460 my $self = shift;
385 my $path = $self->{path}; 461 my $path = $self->{path};
386 462
387 stat $path 463 if ($self->{name} =~ s%^/internal/([^/]+)%%) {
388 or $self->err(404, "not found"); 464 if ($::internal{$1}) {
389 465 $::internal{$1}->($self);
390 $self->{stat} = [stat _];
391
392 # idiotic netscape sends idiotic headers AGAIN
393 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
394 ? str2time $1 : 0;
395
396 if (-d _ && -r _) {
397 # directory
398 if ($path !~ /\/$/) {
399 # create a redirect to get the trailing "/"
400 my $host = $self->server_hostport;
401 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" });
402 } else { 466 } else {
403 $ims < $self->{stat}[9] 467 $self->err (404, "not found");
468 }
469 } else {
470
471 stat $path
404 or $self->err(304, "not modified"); 472 or $self->err (404, "not found");
405 473
406 if (-r "$path/index.html") { 474 $self->{stat} = [stat _];
407 $self->{path} .= "/index.html"; 475
408 $self->handle_file; 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}/" });
409 } else { 486 } else {
487 $ims < $self->{stat}[9]
488 or $self->err (304, "not modified");
489
490 if (-r "$path/index.html") {
491 # replace directory "size" by index.html filesize
492 $self->{stat} = [stat ($self->{path} .= "/index.html")];
493 $self->handle_file ($queue_index, $tbf_top);
494 } else {
410 $self->handle_dir; 495 $self->handle_dir;
411 } 496 }
412 } 497 }
413 } elsif (-f _ && -r _) { 498 } elsif (-f _ && -r _) {
414 -x _ and $self->err(403, "forbidden"); 499 -x _ and $self->err (403, "forbidden");
415 $self->handle_file; 500
501 if (keys %{$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);
416 } else { 513 } else {
417 $self->err(404, "not found"); 514 $self->err (404, "not found");
515 }
418 } 516 }
419} 517}
420 518
421sub handle_dir { 519sub handle_dir {
422 my $self = shift; 520 my $self = shift;
423 my $idx = $self->diridx; 521 my $idx = $self->diridx;
424 522
425 $self->response(200, "ok", 523 $self->response (200, "ok",
426 { 524 {
427 "Content-Type" => "text/html", 525 "Content-Type" => "text/html; charset=utf-8",
428 "Content-Length" => length $idx, 526 "Content-Length" => length $idx,
527 "Last-Modified" => time2str ($self->{stat}[9]),
429 }, 528 },
430 $idx); 529 $idx);
431} 530}
432 531
433sub handle_file { 532sub handle_file {
434 my $self = shift; 533 my ($self, $queue, $tbf) = @_;
435 my $length = -s _; 534 my $length = $self->{stat}[7];
436 my $hdr = { 535 my $hdr = {
437 "Last-Modified" => time2str ((stat _)[9]), 536 "Last-Modified" => time2str ((stat _)[9]),
537 "Accept-Ranges" => "bytes",
438 }; 538 };
439 539
440 my @code = (200, "ok"); 540 my @code = (200, "ok");
441 my ($l, $h); 541 my ($l, $h);
442 542
443 if ($self->{h}{range} =~ /^bytes=(.*)$/) { 543 if ($self->{h}{range} =~ /^bytes=(.*)$/i) {
444 for (split /,/, $1) { 544 for (split /,/, $1) {
445 if (/^-(\d+)$/) { 545 if (/^-(\d+)$/) {
446 ($l, $h) = ($length - $1, $length - 1); 546 ($l, $h) = ($length - $1, $length - 1);
447 } elsif (/^(\d+)-(\d*)$/) { 547 } elsif (/^(\d+)-(\d*)$/) {
448 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 548 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
… …
452 } 552 }
453 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; 553 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
454 } 554 }
455 $hdr->{"Content-Range"} = "bytes */$length"; 555 $hdr->{"Content-Range"} = "bytes */$length";
456 $hdr->{"Content-Length"} = $length; 556 $hdr->{"Content-Length"} = $length;
457 $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")");
458 $self->err(416, "not satisfiable", $hdr, ""); 557 $self->err (416, "not satisfiable", $hdr, "");
459 558
460satisfiable: 559satisfiable:
461 # check for segmented downloads 560 # check for segmented downloads
462 if ($l && $::NO_SEGMENTED) { 561 if ($l && $::NO_SEGMENTED) {
562 my $timeout = $::NOW + 15;
463 if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { 563 while (keys %{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
464 $self->err(400, "segmented downloads are not allowed"); 564 if ($timeout <= $::NOW) {
565 $self->block ($::BLOCKTIME, "segmented downloads are forbidden");
566 #$self->err_segmented_download;
567 } else {
568 $httpevent->wait;
569 }
465 } 570 }
466 } 571 }
467 572
468 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 573 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
469 @code = (206, "partial content"); 574 @code = (206, "partial content");
… …
476 581
477 $self->{path} =~ /\.([^.]+)$/; 582 $self->{path} =~ /\.([^.]+)$/;
478 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream"; 583 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream";
479 $hdr->{"Content-Length"} = $length; 584 $hdr->{"Content-Length"} = $length;
480 585
481 $self->response(@code, $hdr, ""); 586 $self->response (@code, $hdr, "");
482 587
483 if ($self->{method} eq "GET") { 588 if ($self->{method} eq "GET") {
484 my ($fh, $buf, $r); 589 $self->{time} = $::NOW;
485 my $current = $Coro::current; 590 $self->{written} = 0;
591
486 open $fh, "<", $self->{path} 592 open my $fh, "<", $self->{path}
487 or die "$self->{path}: late open failure ($!)"; 593 or die "$self->{path}: late open failure ($!)";
488 594
489 $h -= $l - 1; 595 $h -= $l - 1;
490 596
491 if (0) { 597 my $transfer = $queue->start_transfer ($h);
492 if ($l) { 598 my $locked;
493 sysseek $fh, $l, 0; 599 my $bufsize = $::WAIT_BUFSIZE; # initial buffer size
494 }
495 }
496 600
497 while ($h > 0) { 601 while ($h > 0) {
498 if (0) { 602 unless ($locked) {
499 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h 603 if ($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 $buf, 0
500 or last; 616 or last;
501 } else { 617
502 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), 618 $tbf->request (length $buf);
503 $buf, 0, sub {
504 $r = $_[0];
505 $current->ready;
506 });
507 &Coro::schedule;
508 last unless $r;
509 }
510 my $w = $self->{fh}->syswrite($buf) 619 my $w = $self->{fh}->syswrite ($buf)
511 or last; 620 or last;
512 $::written += $w; 621 $::written += $w;
513 $self->{written} += $w; 622 $self->{written} += $w;
514 $l += $r; 623 $l += $w;
515 } 624 }
516 }
517 625
518 close $fh; 626 close $fh;
627 }
519} 628}
520 629
5211; 6301
631

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