package PublicInbox::WwwStatic;
use strict;
+use parent qw(Exporter);
use Fcntl qw(:seek);
use HTTP::Date qw(time2str);
+use HTTP::Status qw(status_message);
+our @EXPORT_OK = qw(@NO_CACHE r);
+
+our @NO_CACHE = ('Expires', 'Fri, 01 Jan 1980 00:00:00 GMT',
+ 'Pragma', 'no-cache',
+ 'Cache-Control', 'no-cache, max-age=0, must-revalidate');
+
+sub r ($;$) {
+ my ($code, $msg) = @_;
+ $msg ||= status_message($code);
+ [ $code, [ qw(Content-Type text/plain), 'Content-Length', length($msg),
+ @NO_CACHE ],
+ [ $msg ] ]
+}
sub prepare_range {
my ($env, $in, $h, $beg, $end, $size) = @_;
if ($len <= 0) {
$code = 416;
} else {
- sysseek($in, $beg, SEEK_SET) or return [ 500, [], [] ];
+ if ($in) {
+ sysseek($in, $beg, SEEK_SET) or return r(500);
+ }
push @$h, qw(Accept-Ranges bytes Content-Range);
push @$h, "bytes $beg-$end/$size";
$env->{'psgix.no-compress'} = 1;
}
}
+ if ($code == 416) {
+ push @$h, 'Content-Range', "bytes */$size";
+ return [ 416, $h, [] ];
+ }
($code, $len);
}
sub response {
my ($env, $h, $path, $type) = @_;
- return unless -f $path && -r _; # just in case it's a FIFO :P
+ return r(404) unless -f $path && -r _; # just in case it's a FIFO :P
- open my $in, '<', $path or return;
- my $size = -s $in;
+ my ($size, $in);
+ if ($env->{REQUEST_METHOD} eq 'HEAD') {
+ $size = -s _;
+ } else { # GET, callers should've already filtered out other methods
+ open $in, '<', $path or return r(403);
+ $size = -s $in;
+ }
my $mtime = time2str((stat(_))[9]);
if (my $ims = $env->{HTTP_IF_MODIFIED_SINCE}) {
push @$h, 'Content-Type', $type;
if (($env->{HTTP_RANGE} || '') =~ /\bbytes=([0-9]*)-([0-9]*)\z/) {
($code, $len) = prepare_range($env, $in, $h, $1, $2, $size);
- if ($code == 416) {
- push @$h, 'Content-Range', "bytes */$size";
- return [ 416, $h, [] ];
- }
+ return $code if ref($code);
}
push @$h, 'Content-Length', $len, 'Last-Modified', $mtime;
- my $body = bless {
+ my $body = $in ? bless {
initial_rd => 65536,
len => $len,
in => $in,
path => $path,
env => $env,
- }, __PACKAGE__;
+ }, __PACKAGE__ : [];
[ $code, $h, $body ];
}