1 |
root |
1.1 |
use Coro; |
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use Coro::Semaphore; |
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use Coro::Event; |
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use Coro::Socket; |
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no utf8; |
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use bytes; |
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# at least on my machine, this thingy serves files |
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# quite a bit faster than apache, ;) |
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# and quite a bit slower than thttpd :( |
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$SIG{PIPE} = 'IGNORE'; |
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sub slog { |
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my $level = shift; |
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my $format = shift; |
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printf "---: $format\n", @_; |
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} |
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my $connections = new Coro::Semaphore $MAX_CONNECTS; |
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23 |
root |
1.6 |
my @newcons; |
24 |
root |
1.1 |
my @pool; |
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1.2 |
# one "execution thread" |
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root |
1.1 |
sub handler { |
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while () { |
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root |
1.6 |
my $new = pop @newcons; |
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if ($new) { |
31 |
root |
1.1 |
eval { |
32 |
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1.6 |
conn->new(@$new)->handle; |
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1.1 |
}; |
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slog 1, "$@" if $@ && !ref $@; |
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$connections->up; |
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} else { |
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last if @pool >= $MAX_POOL; |
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push @pool, $Coro::current; |
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schedule; |
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} |
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} |
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} |
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root |
1.4 |
my $http_port = new Coro::Socket |
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LocalAddr => $SERVER_HOST, |
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LocalPort => $SERVER_PORT, |
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ReuseAddr => 1, |
48 |
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1.13 |
Listen => 50, |
49 |
root |
1.4 |
or die "unable to start server"; |
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push @listen_sockets, $http_port; |
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1.2 |
# the "main thread" |
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1.1 |
async { |
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slog 1, "accepting connections"; |
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while () { |
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$connections->down; |
58 |
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1.6 |
push @newcons, [$http_port->accept]; |
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1.1 |
#slog 3, "accepted @$connections ".scalar(@pool); |
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1.3 |
$::NOW = time; |
61 |
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1.1 |
if (@pool) { |
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(pop @pool)->ready; |
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} else { |
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async \&handler; |
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} |
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} |
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}; |
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package conn; |
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use Socket; |
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use HTTP::Date; |
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1.2 |
use Convert::Scalar 'weaken'; |
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root |
1.16 |
use Linux::AIO; |
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Linux::AIO::min_parallel $::AIO_PARALLEL; |
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Event->io(fd => Linux::AIO::poll_fileno, |
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1.17 |
poll => 'r', async => 1, |
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1.21 |
cb => \&Linux::AIO::poll_cb); |
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my $scheduler = Event->idle( |
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1.22 |
max => 0, min => 0, prio => 4, parked => 1, |
84 |
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1.21 |
cb => \&Coro::schedule); |
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1.16 |
|
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1.3 |
our %conn; # $conn{ip}{fh} => connobj |
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our %blocked; |
88 |
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1.9 |
our %mimetype; |
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sub read_mimetypes { |
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local *M; |
92 |
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1.10 |
if (open M, "<mime_types") { |
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1.9 |
while (<M>) { |
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if (/^([^#]\S+)\t+(\S+)$/) { |
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$mimetype{lc $1} = $2; |
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} |
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} |
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} else { |
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1.10 |
print "cannot open mime_types\n"; |
100 |
root |
1.9 |
} |
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} |
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1.1 |
|
103 |
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1.10 |
read_mimetypes; |
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1.1 |
sub new { |
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my $class = shift; |
107 |
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1.6 |
my $peername = shift; |
108 |
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1.1 |
my $fh = shift; |
109 |
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1.2 |
my $self = bless { fh => $fh }, $class; |
110 |
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1.6 |
my (undef, $iaddr) = unpack_sockaddr_in $peername |
111 |
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or $self->err(500, "unable to decode peername"); |
112 |
root |
1.7 |
|
113 |
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1.3 |
$self->{remote_addr} = inet_ntoa $iaddr; |
114 |
root |
1.11 |
$self->{time} = $::NOW; |
115 |
root |
1.2 |
|
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# enter ourselves into various lists |
117 |
root |
1.3 |
weaken ($conn{$self->{remote_addr}}{$self*1} = $self); |
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root |
1.13 |
$::conns++; |
120 |
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1.2 |
$self; |
122 |
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} |
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sub DESTROY { |
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my $self = shift; |
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root |
1.13 |
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$::conns--; |
128 |
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129 |
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1.19 |
$self->eoconn; |
130 |
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1.3 |
delete $conn{$self->{remote_addr}}{$self*1}; |
131 |
root |
1.19 |
} |
132 |
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# end of connection |
134 |
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sub eoconn { |
135 |
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1.13 |
delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; |
136 |
root |
1.1 |
} |
137 |
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sub slog { |
139 |
root |
1.4 |
my $self = shift; |
140 |
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main::slog($_[0], "$self->{remote_addr}> $_[1]"); |
141 |
root |
1.1 |
} |
142 |
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143 |
root |
1.4 |
sub response { |
144 |
root |
1.1 |
my ($self, $code, $msg, $hdr, $content) = @_; |
145 |
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1.17 |
my $res = "HTTP/1.1 $code $msg\015\012"; |
146 |
root |
1.1 |
|
147 |
root |
1.17 |
#$res .= "Connection: close\015\012"; |
148 |
root |
1.4 |
$res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( |
149 |
root |
1.1 |
|
150 |
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while (my ($h, $v) = each %$hdr) { |
151 |
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$res .= "$h: $v\015\012" |
152 |
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} |
153 |
root |
1.10 |
$res .= "\015\012"; |
154 |
root |
1.4 |
|
155 |
root |
1.13 |
$res .= $content if defined $content and $self->{method} ne "HEAD"; |
156 |
root |
1.1 |
|
157 |
root |
1.3 |
print STDERR "$self->{remote_addr} \"$self->{uri}\" $code ".$hdr->{"Content-Length"}." \"$self->{h}{referer}\"\n";#d# |
158 |
root |
1.2 |
|
159 |
root |
1.11 |
$self->{written} += |
160 |
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print {$self->{fh}} $res; |
161 |
root |
1.1 |
} |
162 |
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163 |
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sub err { |
164 |
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my $self = shift; |
165 |
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my ($code, $msg, $hdr, $content) = @_; |
166 |
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167 |
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unless (defined $content) { |
168 |
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$content = "$code $msg"; |
169 |
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$hdr->{"Content-Type"} = "text/plain"; |
170 |
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$hdr->{"Content-Length"} = length $content; |
171 |
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} |
172 |
root |
1.17 |
$hdr->{"Connection"} = "close"; |
173 |
root |
1.1 |
|
174 |
root |
1.4 |
$self->response($code, $msg, $hdr, $content); |
175 |
root |
1.1 |
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die bless {}, err::; |
177 |
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} |
178 |
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179 |
root |
1.3 |
sub err_blocked { |
180 |
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my $self = shift; |
181 |
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my $ip = $self->{remote_addr}; |
182 |
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my $time = time2str $blocked{$ip} = $::NOW + $::BLOCKTIME; |
183 |
root |
1.10 |
|
184 |
root |
1.20 |
Coro::Event::do_timer(after => 20*rand); |
185 |
root |
1.14 |
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$self->err(401, "too many connections", |
187 |
root |
1.4 |
{ |
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"Content-Type" => "text/html", |
189 |
root |
1.20 |
"Retry-After" => $::BLOCKTIME, |
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"Warning" => "Please do NOT retry, you have been blocked", |
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"WWW-Authenticate" => "Basic realm=\"Please do NOT retry, you have been blocked\"", |
192 |
root |
1.4 |
}, |
193 |
root |
1.3 |
<<EOF); |
194 |
root |
1.4 |
<html><p> |
195 |
root |
1.3 |
You have been blocked because you opened too many connections. You |
196 |
root |
1.4 |
may retry at</p> |
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198 |
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<p><blockquote>$time.</blockquote></p> |
199 |
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200 |
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<p>Until then, each new access will renew the block. You might want to have a |
201 |
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look at the <a href="http://www.goof.com/pcg/marc/animefaq.html">FAQ</a>.</p> |
202 |
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</html> |
203 |
root |
1.3 |
EOF |
204 |
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} |
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206 |
root |
1.1 |
sub handle { |
207 |
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my $self = shift; |
208 |
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my $fh = $self->{fh}; |
209 |
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210 |
root |
1.17 |
$fh->timeout($::REQ_TIMEOUT); |
211 |
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while() { |
212 |
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$self->{reqs}++; |
213 |
root |
1.1 |
|
214 |
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# read request and parse first line |
215 |
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my $req = $fh->readline("\015\012\015\012"); |
216 |
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217 |
root |
1.17 |
unless (defined $req) { |
218 |
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if (exists $self->{version}) { |
219 |
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last; |
220 |
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} else { |
221 |
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$self->err(408, "request timeout"); |
222 |
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} |
223 |
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} |
224 |
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225 |
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$self->{h} = {}; |
226 |
root |
1.1 |
|
227 |
root |
1.17 |
$fh->timeout($::RES_TIMEOUT); |
228 |
root |
1.3 |
my $ip = $self->{remote_addr}; |
229 |
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230 |
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if ($blocked{$ip}) { |
231 |
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$self->err_blocked($blocked{$ip}) |
232 |
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if $blocked{$ip} > $::NOW; |
233 |
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234 |
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delete $blocked{$ip}; |
235 |
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} |
236 |
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237 |
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if (%{$conn{$ip}} > $::MAX_CONN_IP) { |
238 |
root |
1.12 |
$self->slog(2, "blocked ip $ip"); |
239 |
root |
1.3 |
$self->err_blocked; |
240 |
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} |
241 |
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242 |
root |
1.1 |
$req =~ /^(?:\015\012)? |
243 |
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(GET|HEAD) \040+ |
244 |
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([^\040]+) \040+ |
245 |
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HTTP\/([0-9]+\.[0-9]+) |
246 |
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\015\012/gx |
247 |
root |
1.14 |
or $self->err(405, "method not allowed", { Allow => "GET,HEAD" }); |
248 |
root |
1.1 |
|
249 |
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$self->{method} = $1; |
250 |
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$self->{uri} = $2; |
251 |
root |
1.17 |
$self->{version} = $3; |
252 |
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253 |
root |
1.20 |
$3 =~ /^1\./ |
254 |
root |
1.17 |
or $self->err(506, "http protocol version $3 not supported"); |
255 |
root |
1.1 |
|
256 |
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# parse headers |
257 |
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{ |
258 |
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my (%hdr, $h, $v); |
259 |
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260 |
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$hdr{lc $1} .= ",$2" |
261 |
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while $req =~ /\G |
262 |
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([^:\000-\040]+): |
263 |
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[\008\040]* |
264 |
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((?: [^\015\012]+ | \015\012[\008\040] )*) |
265 |
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\015\012 |
266 |
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/gxc; |
267 |
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268 |
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$req =~ /\G\015\012$/ |
269 |
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or $self->err(400, "bad request"); |
270 |
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271 |
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$self->{h}{$h} = substr $v, 1 |
272 |
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while ($h, $v) = each %hdr; |
273 |
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} |
274 |
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275 |
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$self->{server_port} = $self->{h}{host} =~ s/:([0-9]+)$// ? $1 : 80; |
276 |
root |
1.3 |
|
277 |
root |
1.13 |
weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); |
278 |
root |
1.1 |
|
279 |
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$self->map_uri; |
280 |
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$self->respond; |
281 |
root |
1.17 |
|
282 |
root |
1.19 |
$self->eoconn; |
283 |
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284 |
root |
1.17 |
last if $self->{h}{connection} =~ /close/ || $self->{version} lt "1.1"; |
285 |
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286 |
root |
1.19 |
$self->slog(9, "persistent connection [".$self->{h}{"user-agent"}."][$self->{reqs}]"); |
287 |
root |
1.17 |
$fh->timeout($::PER_TIMEOUT); |
288 |
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} |
289 |
root |
1.1 |
} |
290 |
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291 |
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# uri => path mapping |
292 |
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sub map_uri { |
293 |
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my $self = shift; |
294 |
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my $host = $self->{h}{host} || "default"; |
295 |
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my $uri = $self->{uri}; |
296 |
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297 |
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# some massaging, also makes it more secure |
298 |
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$uri =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr hex $1/ge; |
299 |
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$uri =~ s%//+%/%g; |
300 |
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$uri =~ s%/\.(?=/|$)%%g; |
301 |
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1 while $uri =~ s%/[^/]+/\.\.(?=/|$)%%; |
302 |
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303 |
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$uri =~ m%^/?\.\.(?=/|$)% |
304 |
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and $self->err(400, "bad request"); |
305 |
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306 |
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$self->{name} = $uri; |
307 |
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308 |
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# now do the path mapping |
309 |
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$self->{path} = "$::DOCROOT/$host$uri"; |
310 |
root |
1.7 |
|
311 |
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$self->access_check; |
312 |
root |
1.1 |
} |
313 |
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314 |
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sub server_address { |
315 |
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my $self = shift; |
316 |
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my ($port, $iaddr) = unpack_sockaddr_in $self->{fh}->getsockname |
317 |
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or $self->err(500, "unable to get socket name"); |
318 |
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((inet_ntoa $iaddr), $port); |
319 |
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} |
320 |
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321 |
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sub server_host { |
322 |
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my $self = shift; |
323 |
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if (exists $self->{h}{host}) { |
324 |
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return $self->{h}{host}; |
325 |
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} else { |
326 |
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return (($self->server_address)[0]); |
327 |
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} |
328 |
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} |
329 |
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|
330 |
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sub server_hostport { |
331 |
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my $self = shift; |
332 |
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my ($host, $port); |
333 |
|
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if (exists $self->{h}{host}) { |
334 |
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($host, $port) = ($self->{h}{host}, $self->{server_port}); |
335 |
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} else { |
336 |
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($host, $port) = $self->server_address; |
337 |
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} |
338 |
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$port = $port == 80 ? "" : ":$port"; |
339 |
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$host.$port; |
340 |
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} |
341 |
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342 |
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sub _cgi { |
343 |
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my $self = shift; |
344 |
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my $path = shift; |
345 |
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my $fh; |
346 |
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|
347 |
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# no two-way xxx supported |
348 |
|
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if (0 == fork) { |
349 |
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open STDOUT, ">&".fileno($self->{fh}); |
350 |
|
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if (chdir $::DOCROOT) { |
351 |
|
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$ENV{SERVER_SOFTWARE} = "thttpd-myhttpd"; # we are thttpd-alike |
352 |
|
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$ENV{HTTP_HOST} = $self->server_host; |
353 |
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$ENV{HTTP_PORT} = $self->{server_host}; |
354 |
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$ENV{SCRIPT_NAME} = $self->{name}; |
355 |
root |
1.10 |
exec $path; |
356 |
root |
1.1 |
} |
357 |
|
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Coro::State::_exit(0); |
358 |
|
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} else { |
359 |
|
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} |
360 |
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} |
361 |
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|
362 |
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sub respond { |
363 |
|
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my $self = shift; |
364 |
|
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my $path = $self->{path}; |
365 |
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|
366 |
|
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stat $path |
367 |
|
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or $self->err(404, "not found"); |
368 |
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|
369 |
root |
1.10 |
$self->{stat} = [stat _]; |
370 |
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|
371 |
root |
1.1 |
# idiotic netscape sends idiotic headers AGAIN |
372 |
|
|
my $ims = $self->{h}{"if-modified-since"} =~ /^([^;]+)/ |
373 |
|
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? str2time $1 : 0; |
374 |
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|
375 |
|
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if (-d _ && -r _) { |
376 |
|
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# directory |
377 |
|
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if ($path !~ /\/$/) { |
378 |
|
|
# create a redirect to get the trailing "/" |
379 |
|
|
my $host = $self->server_hostport; |
380 |
|
|
$self->err(301, "moved permanently", { Location => "http://$host$self->{uri}/" }); |
381 |
|
|
} else { |
382 |
root |
1.10 |
$ims < $self->{stat}[9] |
383 |
root |
1.1 |
or $self->err(304, "not modified"); |
384 |
|
|
|
385 |
|
|
if ($self->{method} eq "GET") { |
386 |
|
|
if (-r "$path/index.html") { |
387 |
|
|
$self->{path} .= "/index.html"; |
388 |
|
|
$self->handle_file; |
389 |
|
|
} else { |
390 |
|
|
$self->handle_dir; |
391 |
|
|
} |
392 |
|
|
} |
393 |
|
|
} |
394 |
|
|
} elsif (-f _ && -r _) { |
395 |
|
|
-x _ and $self->err(403, "forbidden"); |
396 |
|
|
$self->handle_file; |
397 |
|
|
} else { |
398 |
|
|
$self->err(404, "not found"); |
399 |
|
|
} |
400 |
|
|
} |
401 |
|
|
|
402 |
|
|
sub handle_dir { |
403 |
|
|
my $self = shift; |
404 |
root |
1.10 |
my $idx = $self->diridx; |
405 |
|
|
|
406 |
|
|
$self->response(200, "ok", |
407 |
|
|
{ |
408 |
|
|
"Content-Type" => "text/html", |
409 |
|
|
"Content-Length" => length $idx, |
410 |
|
|
}, |
411 |
|
|
$idx); |
412 |
root |
1.1 |
} |
413 |
|
|
|
414 |
|
|
sub handle_file { |
415 |
|
|
my $self = shift; |
416 |
|
|
my $length = -s _; |
417 |
|
|
my $hdr = { |
418 |
|
|
"Last-Modified" => time2str ((stat _)[9]), |
419 |
|
|
}; |
420 |
|
|
|
421 |
|
|
my @code = (200, "ok"); |
422 |
|
|
my ($l, $h); |
423 |
|
|
|
424 |
|
|
if ($self->{h}{range} =~ /^bytes=(.*)$/) { |
425 |
|
|
for (split /,/, $1) { |
426 |
|
|
if (/^-(\d+)$/) { |
427 |
|
|
($l, $h) = ($length - $1, $length - 1); |
428 |
|
|
} elsif (/^(\d+)-(\d*)$/) { |
429 |
|
|
($l, $h) = ($1, ($2 ne "" || $2 >= $length) ? $2 : $length - 1); |
430 |
|
|
} else { |
431 |
|
|
($l, $h) = (0, $length - 1); |
432 |
|
|
goto ignore; |
433 |
|
|
} |
434 |
|
|
goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h > $l; |
435 |
|
|
} |
436 |
|
|
$hdr->{"Content-Range"} = "bytes */$length"; |
437 |
root |
1.20 |
$self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")"); |
438 |
root |
1.1 |
$self->err(416, "not satisfiable", $hdr); |
439 |
|
|
|
440 |
|
|
satisfiable: |
441 |
root |
1.4 |
# check for segmented downloads |
442 |
root |
1.10 |
if ($l && $::NO_SEGMENTED) { |
443 |
root |
1.13 |
if (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { |
444 |
root |
1.14 |
Coro::Event::do_timer(after => 15); |
445 |
|
|
|
446 |
root |
1.4 |
$self->err(400, "segmented downloads are not allowed"); |
447 |
|
|
} |
448 |
|
|
} |
449 |
|
|
|
450 |
root |
1.1 |
$hdr->{"Content-Range"} = "bytes $l-$h/$length"; |
451 |
|
|
@code = (206, "partial content"); |
452 |
|
|
$length = $h - $l + 1; |
453 |
|
|
|
454 |
|
|
ignore: |
455 |
|
|
} else { |
456 |
|
|
($l, $h) = (0, $length - 1); |
457 |
|
|
} |
458 |
|
|
|
459 |
root |
1.9 |
$self->{path} =~ /\.([^.]+)$/; |
460 |
|
|
$hdr->{"Content-Type"} = $mimetype{lc $1} || "application/octet-stream"; |
461 |
root |
1.1 |
$hdr->{"Content-Length"} = $length; |
462 |
|
|
|
463 |
root |
1.4 |
$self->response(@code, $hdr, ""); |
464 |
root |
1.1 |
|
465 |
|
|
if ($self->{method} eq "GET") { |
466 |
root |
1.16 |
my ($fh, $buf, $r); |
467 |
|
|
my $current = $Coro::current; |
468 |
root |
1.1 |
open $fh, "<", $self->{path} |
469 |
|
|
or die "$self->{path}: late open failure ($!)"; |
470 |
|
|
|
471 |
|
|
$h -= $l - 1; |
472 |
|
|
|
473 |
root |
1.19 |
if (0) { |
474 |
|
|
if ($l) { |
475 |
|
|
sysseek $fh, $l, 0; |
476 |
|
|
} |
477 |
|
|
} |
478 |
|
|
|
479 |
root |
1.1 |
while ($h > 0) { |
480 |
root |
1.19 |
if (0) { |
481 |
|
|
sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h |
482 |
|
|
or last; |
483 |
|
|
} else { |
484 |
|
|
aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), |
485 |
|
|
$buf, 0, sub { |
486 |
|
|
$r = $_[0]; |
487 |
|
|
$current->ready; |
488 |
root |
1.21 |
$scheduler->now; |
489 |
root |
1.19 |
}); |
490 |
|
|
&Coro::schedule; |
491 |
|
|
last unless $r; |
492 |
|
|
} |
493 |
root |
1.11 |
my $w = $self->{fh}->syswrite($buf) |
494 |
root |
1.1 |
or last; |
495 |
root |
1.11 |
$::written += $w; |
496 |
|
|
$self->{written} += $w; |
497 |
root |
1.16 |
$l += $r; |
498 |
root |
1.1 |
} |
499 |
|
|
} |
500 |
|
|
|
501 |
|
|
close $fh; |
502 |
root |
1.7 |
} |
503 |
|
|
|
504 |
root |
1.2 |
1; |