1 # Copyright (C) 2016-2019 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 package PublicInbox::WwwStatic;
7 use HTTP::Date qw(time2str);
10 my ($env, $in, $h, $beg, $end, $size) = @_;
14 if ($end ne '') { # "bytes=-$end" => last N bytes
25 } elsif ($end eq '' || $end >= $size) {
28 } elsif ($end < $size) {
35 $len = $end - $beg + 1;
39 sysseek($in, $beg, SEEK_SET) or return [ 500, [], [] ];
40 push @$h, qw(Accept-Ranges bytes Content-Range);
41 push @$h, "bytes $beg-$end/$size";
43 # FIXME: Plack::Middleware::Deflater bug?
44 $env->{'psgix.no-compress'} = 1;
51 my ($env, $h, $path, $type) = @_;
52 return unless -f $path && -r _; # just in case it's a FIFO :P
54 open my $in, '<', $path or return;
56 my $mtime = time2str((stat(_))[9]);
58 if (my $ims = $env->{HTTP_IF_MODIFIED_SINCE}) {
59 return [ 304, [], [] ] if $mtime eq $ims;
64 push @$h, 'Content-Type', $type;
65 if (($env->{HTTP_RANGE} || '') =~ /\bbytes=([0-9]*)-([0-9]*)\z/) {
66 ($code, $len) = prepare_range($env, $in, $h, $1, $2, $size);
68 push @$h, 'Content-Range', "bytes */$size";
69 return [ 416, $h, [] ];
72 push @$h, 'Content-Length', $len, 'Last-Modified', $mtime;
83 # called by PSGI servers:
86 my $len = $self->{len} or return; # undef, tells server we're done
87 my $n = delete($self->{initial_rd}) // 8192;
88 $n = $len if $len < $n;
89 my $r = sysread($self->{in}, my $buf, $n);
90 if (defined $r && $r > 0) { # success!
91 $self->{len} = $len - $r;
94 my $m = defined $r ? "EOF with $len bytes left" : "read error: $!";
95 my $env = $self->{env};
96 $env->{'psgi.errors'}->print("$self->{path} $m\n");
98 # drop the client on error
99 if (my $io = $env->{'psgix.io'}) {
100 $io->close; # this is likely PublicInbox::DS::close
101 } else { # for some PSGI servers w/o psgix.io
102 die "dropping client socket\n";
107 sub close {} # noop, just let everything go out-of-scope