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 $path && -r _; # just in case it's a FIFO :P
+
+ my ($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}) {
+ return [ 304, [], [] ] if $mtime eq $ims;
+ }
- # TODO: If-Modified-Since and Last-Modified?
- open my $in, '<', $path or return;
- my $size = -s $in;
my $len = $size;
my $code = 200;
push @$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;
- my $body = bless {
+ push @$h, 'Content-Length', $len, 'Last-Modified', $mtime;
+ my $body = $in ? bless {
initial_rd => 65536,
len => $len,
in => $in,
path => $path,
env => $env,
- }, __PACKAGE__;
+ }, __PACKAGE__ : [];
[ $code, $h, $body ];
}
# called by PSGI servers:
sub getline {
my ($self) = @_;
- my $len = $self->{len};
- return if $len == 0;
+ my $len = $self->{len} or return; # undef, tells server we're done
my $n = delete($self->{initial_rd}) // 8192;
$n = $len if $len < $n;
my $r = sysread($self->{in}, my $buf, $n);
- if (!defined $r) {
- $self->{env}->{'psgi.errors'}->print(
- "$self->{path} read error: $!\n");
- } elsif ($r > 0) { # success!
+ if (defined $r && $r > 0) { # success!
$self->{len} = $len - $r;
return $buf;
- } else {
- $self->{env}->{'psgi.errors'}->print(
- "$self->{path} EOF with $len bytes left\n");
}
+ my $m = defined $r ? "EOF with $len bytes left" : "read error: $!";
+ my $env = $self->{env};
+ $env->{'psgi.errors'}->print("$self->{path} $m\n");
# drop the client on error
- if (my $io = $self->{env}->{'psgix.io'}) {
- $io->close; # this is PublicInbox::DS::close
+ if (my $io = $env->{'psgix.io'}) {
+ $io->close; # this is likely PublicInbox::DS::close
+ } else { # for some PSGI servers w/o psgix.io
+ die "dropping client socket\n";
}
undef;
}