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Comparing Coro/myhttpd/httpd.pl (file contents):
Revision 1.1 by root, Thu Aug 9 02:57:54 2001 UTC vs.
Revision 1.41 by root, Mon Sep 10 22:16:20 2001 UTC

1#!/usr/bin/perl
2
3use Coro; 1use Coro;
4use Coro::Semaphore; 2use Coro::Semaphore;
5use Coro::Event; 3use Coro::Event;
6use Coro::Socket; 4use Coro::Socket;
7 5
6use HTTP::Date;
7
8no utf8; 8no utf8;
9use bytes; 9use bytes;
10 10
11# at least on my machine, this thingy serves files 11# at least on my machine, this thingy serves files
12# quite a bit faster than apache, ;) 12# quite a bit faster than apache, ;)
13# and quite a bit slower than thttpd :( 13# and quite a bit slower than thttpd :(
14 14
15my $port = new Coro::Socket
16 LocalAddr => $SERVER_HOST,
17 LocalPort => $SERVER_PORT,
18 ReuseAddr => 1,
19 Listen => 1,
20 or die "unable to start server";
21
22$SIG{PIPE} = 'IGNORE'; 15$SIG{PIPE} = 'IGNORE';
23 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
24sub slog { 26sub slog {
25 my $level = shift; 27 my $level = shift;
26 my $format = shift; 28 my $format = shift;
27 printf "---: $format\n", @_; 29 printf "---: $format\n", @_;
28} 30}
29 31
30my $connections = new Coro::Semaphore $MAX_CONNECTS; 32our $connections = new Coro::Semaphore $MAX_CONNECTS || 250;
31 33
32my @fh; 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);
40
41my @newcons;
33my @pool; 42my @pool;
34 43
44# one "execution thread"
35sub handler { 45sub handler {
36 while () { 46 while () {
37 my $fh = pop @fh; 47 if (@newcons) {
38 if ($fh) {
39 eval { 48 eval {
40 conn->new($fh)->handle; 49 conn->new(@{pop @newcons})->handle;
41 }; 50 };
42 close $fh;
43 slog 1, "$@" if $@ && !ref $@; 51 slog 1, "$@" if $@ && !ref $@;
44 $connections->up; 52 $connections->up;
45 } else { 53 } else {
46 last if @pool >= $MAX_POOL; 54 last if @pool >= $MAX_POOL;
47 push @pool, $Coro::current; 55 push @pool, $Coro::current;
48 schedule; 56 schedule;
49 } 57 }
50 } 58 }
51} 59}
52 60
61sub listen_on {
62 my $listen = $_[0];
63
64 push @listen_sockets, $listen;
65
66 # the "main thread"
53async { 67 async {
54 slog 1, "accepting connections"; 68 slog 1, "accepting connections";
55 while () { 69 while () {
56 $connections->down; 70 $connections->down;
57 push @fh, $port->accept; 71 push @newcons, [$listen->accept];
58 #slog 3, "accepted @$connections ".scalar(@pool); 72 #slog 3, "accepted @$connections ".scalar(@pool);
59 if (@pool) { 73 if (@pool) {
60 (pop @pool)->ready; 74 (pop @pool)->ready;
61 } else { 75 } else {
62 async \&handler; 76 async \&handler;
63 } 77 }
64 78
79 }
65 } 80 };
66}; 81}
67 82
68loop; 83my $http_port = new Coro::Socket
69print "ende\n";#d# 84 LocalAddr => $SERVER_HOST,
85 LocalPort => $SERVER_PORT,
86 ReuseAddr => 1,
87 Listen => 50,
88 or die "unable to start server";
89
90listen_on $http_port;
91
92if ($SERVER_PORT2) {
93 my $http_port = new Coro::Socket
94 LocalAddr => $SERVER_HOST,
95 LocalPort => $SERVER_PORT2,
96 ReuseAddr => 1,
97 Listen => 50,
98 or die "unable to start server";
99
100 listen_on $http_port;
101}
102
103our $NOW;
104our $HTTP_NOW;
105
106Event->timer(interval => 1, hard => 1, cb => sub {
107 $NOW = time;
108 $HTTP_NOW = time2str $NOW;
109})->now;
70 110
71package conn; 111package conn;
72 112
73use Socket; 113use Socket;
74use HTTP::Date; 114use HTTP::Date;
115use Convert::Scalar 'weaken';
116use Linux::AIO;
117
118Linux::AIO::min_parallel $::AIO_PARALLEL;
119
120Event->io(fd => Linux::AIO::poll_fileno,
121 poll => 'r', async => 1,
122 cb => \&Linux::AIO::poll_cb);
123
124our %conn; # $conn{ip}{self} => connobj
125our %uri; # $uri{ip}{uri}{self}
126our %blocked;
127our %mimetype;
128
129sub read_mimetypes {
130 local *M;
131 if (open M, "<mime_types") {
132 while (<M>) {
133 if (/^([^#]\S+)\t+(\S+)$/) {
134 $mimetype{lc $1} = $2;
135 }
136 }
137 } else {
138 print "cannot open mime_types\n";
139 }
140}
141
142read_mimetypes;
75 143
76sub new { 144sub new {
77 my $class = shift; 145 my $class = shift;
146 my $peername = shift;
78 my $fh = shift; 147 my $fh = shift;
148 my $self = bless { fh => $fh }, $class;
79 my (undef, $iaddr) = unpack_sockaddr_in $fh->getpeername 149 my (undef, $iaddr) = unpack_sockaddr_in $peername
80 or $self->err(500, "unable to get peername"); 150 or $self->err(500, "unable to decode peername");
151
81 $self->{remote_address} = inet_ntoa $iaddr; 152 $self->{remote_addr} = inet_ntoa $iaddr;
82 bless { fh => $fh }, $class; 153 $self->{time} = $::NOW;
154
155 $::conns++;
156
157 $self;
158}
159
160sub DESTROY {
161 my $self = shift;
162 $::conns--;
163 $self->eoconn;
164}
165
166# end of connection
167sub eoconn {
168 my $self = shift;
169
170 # clean up hints
171 delete $conn{$self->{remote_id}}{$self*1};
172 delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1};
83} 173}
84 174
85sub slog { 175sub slog {
86 main::slog(@_); 176 my $self = shift;
177 main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]");
87} 178}
88 179
89sub print_response { 180sub response {
90 my ($self, $code, $msg, $hdr, $content) = @_; 181 my ($self, $code, $msg, $hdr, $content) = @_;
91 my $res = "HTTP/1.0 $code $msg\015\012"; 182 my $res = "HTTP/1.1 $code $msg\015\012";
92 183
93 $hdr->{Date} = time2str time; # slow? nah. 184 $self->{h}{connection} ||= $hdr->{Connection};
185
186 $res .= "Date: $HTTP_NOW\015\012";
94 187
95 while (my ($h, $v) = each %$hdr) { 188 while (my ($h, $v) = each %$hdr) {
96 $res .= "$h: $v\015\012" 189 $res .= "$h: $v\015\012"
97 } 190 }
98 $res .= "\015\012$content" if defined $content; 191 $res .= "\015\012";
99 192
193 $res .= $content if defined $content and $self->{method} ne "HEAD";
194
195 my $log = "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";
196
197 print $accesslog $log if $accesslog;
198 print STDERR $log;
199
200 $self->{written} +=
100 print {$self->{fh}} $res; 201 print {$self->{fh}} $res;
101} 202}
102 203
103sub err { 204sub err {
104 my $self = shift; 205 my $self = shift;
105 my ($code, $msg, $hdr, $content) = @_; 206 my ($code, $msg, $hdr, $content) = @_;
106 207
107 unless (defined $content) { 208 unless (defined $content) {
108 $content = "$code $msg"; 209 $content = "$code $msg\n";
109 $hdr->{"Content-Type"} = "text/plain"; 210 $hdr->{"Content-Type"} = "text/plain";
110 $hdr->{"Content-Length"} = length $content; 211 $hdr->{"Content-Length"} = length $content;
111 } 212 }
213 $hdr->{"Connection"} = "close";
112 214
113 $self->slog($msg) if $code;
114
115 $self->print_response($code, $msg, $hdr, $content); 215 $self->response($code, $msg, $hdr, $content);
116 216
117 die bless {}, err::; 217 die bless {}, err::;
118} 218}
119 219
120sub handle { 220sub handle {
121 my $self = shift; 221 my $self = shift;
122 my $fh = $self->{fh}; 222 my $fh = $self->{fh};
123 223
224 my $host;
225
226 $fh->timeout($::REQ_TIMEOUT);
124 #while() { 227 while() {
228 $self->{reqs}++;
229
230 # read request and parse first line
231 my $req = $fh->readline("\015\012\015\012");
232
233 unless (defined $req) {
234 if (exists $self->{version}) {
235 last;
236 } else {
237 $self->err(408, "request timeout");
238 }
239 }
240
125 $self->{h} = {}; 241 $self->{h} = {};
126 242
127 # read request and parse first line
128 $fh->timeout($::REQ_TIMEOUT);
129 my $req = $fh->readline("\015\012\015\012");
130 $fh->timeout($::RES_TIMEOUT); 243 $fh->timeout($::RES_TIMEOUT);
131
132 defined $req or
133 $self->err(408, "request timeout");
134 244
135 $req =~ /^(?:\015\012)? 245 $req =~ /^(?:\015\012)?
136 (GET|HEAD) \040+ 246 (GET|HEAD) \040+
137 ([^\040]+) \040+ 247 ([^\040]+) \040+
138 HTTP\/([0-9]+\.[0-9]+) 248 HTTP\/([0-9]+\.[0-9]+)
139 \015\012/gx 249 \015\012/gx
140 or $self->err(403, "method not allowed", { Allow => "GET,HEAD" }); 250 or $self->err(405, "method not allowed", { Allow => "GET,HEAD" });
141
142 $2 ne "1.0"
143 or $self->err(506, "http protocol version not supported");
144 251
145 $self->{method} = $1; 252 $self->{method} = $1;
146 $self->{uri} = $2; 253 $self->{uri} = $2;
254 $self->{version} = $3;
255
256 $3 =~ /^1\./
257 or $self->err(506, "http protocol version $3 not supported");
147 258
148 # parse headers 259 # parse headers
149 { 260 {
150 my (%hdr, $h, $v); 261 my (%hdr, $h, $v);
151 262
… …
162 273
163 $self->{h}{$h} = substr $v, 1 274 $self->{h}{$h} = substr $v, 1
164 while ($h, $v) = each %hdr; 275 while ($h, $v) = each %hdr;
165 } 276 }
166 277
278 # remote id should be unique per user
279 my $id = $self->{remote_addr};
280
281 if (exists $self->{h}{"client-ip"}) {
282 $id .= "[".$self->{h}{"client-ip"}."]";
283 } elsif (exists $self->{h}{"x-forwarded-for"}) {
284 $id .= "[".$self->{h}{"x-forwarded-for"}."]";
285 }
286
287 $self->{remote_id} = $id;
288
289 if ($blocked{$id}) {
290 $self->err_blocked($blocked{$id})
291 if $blocked{$id} > $::NOW;
292
293 delete $blocked{$id};
294 }
295
296 if (%{$conn{$id}} >= $::MAX_CONN_IP) {
297 my $delay = $::PER_TIMEOUT + 15;
298 while (%{$conn{$id}} >= $::MAX_CONN_IP) {
299 if ($delay <= 0) {
300 $self->slog(2, "blocked ip $id");
301 $self->err_blocked;
302 } else {
303 Coro::Event::do_timer(after => 4); $delay -= 4;
304 }
305 }
306 }
307
308 # find out server name and port
309 if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) {
310 $host = $1;
311 } else {
312 $host = $self->{h}{host};
313 }
314
315 if (defined $host) {
167 $self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; 316 $self->{server_port} = $host =~ s/:([0-9]+)$// ? $1 : 80;
317 } else {
318 ($self->{server_port}, $host)
319 = unpack_sockaddr_in $self->{fh}->getsockname
320 or $self->err(500, "unable to get socket name");
321 $host = inet_ntoa $host;
322 }
168 323
324 $self->{server_name} = $host;
325
326 # enter ourselves into various lists
327 weaken ($conn{$id}{$self*1} = $self);
328 weaken ($uri{$id}{$self->{uri}}{$self*1} = $self);
329
330 eval {
169 $self->map_uri; 331 $self->map_uri;
170 $self->respond; 332 $self->respond;
333 };
334
335 $self->eoconn;
336
337 die if $@ && !ref $@;
338
339 last if $self->{h}{connection} =~ /close/ || $self->{version} < 1.1;
340
341 $fh->timeout($::PER_TIMEOUT);
171 #} 342 }
172} 343}
173 344
174# uri => path mapping 345# uri => path mapping
175sub map_uri { 346sub map_uri {
176 my $self = shift; 347 my $self = shift;
177 my $host = $self->{h}{host} || "default"; 348 my $host = $self->{server_name};
178 my $uri = $self->{uri}; 349 my $uri = $self->{uri};
179 350
180 # some massaging, also makes it more secure 351 # some massaging, also makes it more secure
181 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; 352 $uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge;
182 $uri =~ s%//+%/%g; 353 $uri =~ s%//+%/%g;
… …
188 359
189 $self->{name} = $uri; 360 $self->{name} = $uri;
190 361
191 # now do the path mapping 362 # now do the path mapping
192 $self->{path} = "$::DOCROOT/$host$uri"; 363 $self->{path} = "$::DOCROOT/$host$uri";
193}
194 364
195sub server_address { 365 $self->access_check;
196 my $self = shift;
197 my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname
198 or $self->err(500, "unable to get socket name");
199 ((inet_ntoa $iaddr), $port);
200}
201
202sub server_host {
203 my $self = shift;
204 if (exists $self->{h}{host}) {
205 return $self->{h}{host};
206 } else {
207 return (($self->server_address)[0]);
208 }
209}
210
211sub server_hostport {
212 my $self = shift;
213 my ($host, $port);
214 if (exists $self->{h}{host}) {
215 ($host, $port) = ($self->{h}{host}, $self->{server_port});
216 } else {
217 ($host, $port) = $self->server_address;
218 }
219 $port = $port == 80 ? "" : ":$port";
220 $host.$port;
221} 366}
222 367
223sub _cgi { 368sub _cgi {
224 my $self = shift; 369 my $self = shift;
225 my $path = shift; 370 my $path = shift;
… …
228 # no two-way xxx supported 373 # no two-way xxx supported
229 if (0 == fork) { 374 if (0 == fork) {
230 open STDOUT, ">&".fileno($self->{fh}); 375 open STDOUT, ">&".fileno($self->{fh});
231 if (chdir $::DOCROOT) { 376 if (chdir $::DOCROOT) {
232 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike 377 $ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike
233 $ENV{HTTP_HOST} = $self->server_host; 378 $ENV{HTTP_HOST} = $self->{server_name};
234 $ENV{HTTP_PORT} = $self->{server_host}; 379 $ENV{HTTP_PORT} = $self->{server_port};
235 $ENV{SCRIPT_NAME} = $self->{name}; 380 $ENV{SCRIPT_NAME} = $self->{name};
236 exec $::INDEXPROG; 381 exec $path;
237 } 382 }
238 Coro::State::_exit(0); 383 Coro::State::_exit(0);
239 } else { 384 } else {
385 die;
240 } 386 }
387}
388
389sub server_hostport {
390 $_[0]{server_port} == 80
391 ? $_[0]{server_name}
392 : "$_[0]{server_name}:$_[0]{server_port}";
241} 393}
242 394
243sub respond { 395sub respond {
244 my $self = shift; 396 my $self = shift;
245 my $path = $self->{path}; 397 my $path = $self->{path};
246 398
247 stat $path 399 stat $path
248 or $self->err(404, "not found"); 400 or $self->err(404, "not found");
401
402 $self->{stat} = [stat _];
249 403
250 # idiotic netscape sends idiotic headers AGAIN 404 # idiotic netscape sends idiotic headers AGAIN
251 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/ 405 my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/
252 ? str2time $1 : 0; 406 ? str2time $1 : 0;
253 407
254 if (-d _ && -r _) { 408 if (-d _ && -r _) {
255 # directory 409 # directory
256 if ($path !~ /\/$/) { 410 if ($path !~ /\/$/) {
257 # create a redirect to get the trailing "/" 411 # create a redirect to get the trailing "/"
258 my $host = $self->server_hostport; 412 # we don't try to avoid the :80
259 $self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); 413 $self->err(301, "moved permanently", { Location => "http://".$self->server_hostport."$self->{uri}/" });
260 } else { 414 } else {
261 $ims < (stat _)[9] 415 $ims < $self->{stat}[9]
262 or $self->err(304, "not modified"); 416 or $self->err(304, "not modified");
263 417
264 if ($self->{method} eq "GET") {
265 if (-r "$path/index.html") { 418 if (-r "$path/index.html") {
266 $self->{path} .= "/index.html"; 419 $self->{path} .= "/index.html";
267 $self->handle_file; 420 $self->handle_file;
268 } else { 421 } else {
269 $self->handle_dir; 422 $self->handle_dir;
270 }
271 } 423 }
272 } 424 }
273 } elsif (-f _ && -r _) { 425 } elsif (-f _ && -r _) {
274 -x _ and $self->err(403, "forbidden"); 426 -x _ and $self->err(403, "forbidden");
275 $self->handle_file; 427 $self->handle_file;
… …
278 } 430 }
279} 431}
280 432
281sub handle_dir { 433sub handle_dir {
282 my $self = shift; 434 my $self = shift;
283 $self->_cgi($::INDEXPROG); 435 my $idx = $self->diridx;
436
437 $self->response(200, "ok",
438 {
439 "Content-Type" => "text/html",
440 "Content-Length" => length $idx,
441 },
442 $idx);
284} 443}
285 444
286sub handle_file { 445sub handle_file {
287 my $self = shift; 446 my $self = shift;
288 my $length = -s _; 447 my $length = $self->{stat}[7];
448 my $queue = $::transfers[$length >= $::TRANSFER_SMALL];
289 my $hdr = { 449 my $hdr = {
290 "Last-Modified" => time2str ((stat _)[9]), 450 "Last-Modified" => time2str ((stat _)[9]),
291 }; 451 };
292 452
293 my @code = (200, "ok"); 453 my @code = (200, "ok");
… …
301 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); 461 ($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1);
302 } else { 462 } else {
303 ($l, $h) = (0, $length - 1); 463 ($l, $h) = (0, $length - 1);
304 goto ignore; 464 goto ignore;
305 } 465 }
306 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; 466 goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l;
307 } 467 }
308 $hdr->{"Content-Range"} = "bytes */$length"; 468 $hdr->{"Content-Range"} = "bytes */$length";
469 $hdr->{"Content-Length"} = $length;
309 $self->err(416, "not satisfiable", $hdr); 470 $self->err(416, "not satisfiable", $hdr, "");
310 471
311satisfiable: 472satisfiable:
473 # check for segmented downloads
474 if ($l && $::NO_SEGMENTED) {
475 my $delay = $::PER_TIMEOUT + 15;
476 while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) {
477 if ($delay <= 0) {
478 $self->err_segmented_download;
479 } else {
480 Coro::Event::do_timer(after => 4); $delay -= 4;
481 }
482 }
483 }
484
312 $hdr->{"Content-Range"} = "bytes $l-$h/$length"; 485 $hdr->{"Content-Range"} = "bytes $l-$h/$length";
313 @code = (206, "partial content"); 486 @code = (206, "partial content");
314 $length = $h - $l + 1; 487 $length = $h - $l + 1;
315 488
316ignore: 489ignore:
317 } else { 490 } else {
318 ($l, $h) = (0, $length - 1); 491 ($l, $h) = (0, $length - 1);
319 } 492 }
320 493
321 if ($self->{path} =~ /\.html$/) { 494 $self->{path} =~ /\.([^.]+)$/;
322 $hdr->{"Content-Type"} = "text/html";
323 } else {
324 $hdr->{"Content-Type"} = "application/octet-stream"; 495 $hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream";
325 }
326
327 $hdr->{"Content-Length"} = $length; 496 $hdr->{"Content-Length"} = $length;
328 497
329 $self->print_response(@code, $hdr, ""); 498 $self->response(@code, $hdr, "");
330 499
331 if ($self->{method} eq "GET") { 500 if ($self->{method} eq "GET") {
501 $self->{time} = $::NOW;
502
503 my $fudge = $queue->[0]->waiters;
504 $fudge = $fudge ? ($fudge+1)/$fudge : 1;
505
506 $queue->[1] *= $fudge;
507 my $transfer = $queue->[0]->guard;
508
509 if ($fudge != 1) {
510 $queue->[1] /= $fudge;
511 $queue->[1] = $queue->[1] * $::wait_factor
512 + ($::NOW - $self->{time}) * (1 - $::wait_factor);
513 }
514 $self->{time} = $::NOW;
515
516 $self->{fh}->writable or return;
517
332 my ($fh, $buf); 518 my ($fh, $buf, $r);
519 my $current = $Coro::current;
333 open $fh, "<", $self->{path} 520 open $fh, "<", $self->{path}
334 or die "$self->{path}: late open failure ($!)"; 521 or die "$self->{path}: late open failure ($!)";
335 522
336 if ($l) {
337 sysseek $fh, $l, 0
338 or die "$self->{path}: cannot seek to $l ($!)";
339 }
340
341 $h -= $l - 1; 523 $h -= $l - 1;
342 524
525 if (0) {
526 if ($l) {
527 sysseek $fh, $l, 0;
528 }
529 }
530
343 while ($h > 0) { 531 while ($h > 0) {
344 $h -= sysread $fh, $buf, $h > 4096 ? 4096 : $h; 532 if (0) {
345 print {$self->{fh}} $buf 533 sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h
534 or last;
535 } else {
536 aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h),
537 $buf, 0, sub {
538 $r = $_[0];
539 Coro::ready($current);
540 });
541 &Coro::schedule;
542 last unless $r;
543 }
544 my $w = syswrite $self->{fh}, $buf
346 or last; 545 or last;
546 $::written += $w;
547 $self->{written} += $w;
548 $l += $r;
347 } 549 }
348 }
349 550
350 close $fh; 551 close $fh;
552 }
351} 553}
554
5551;

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