Add the WWW directory. It is a mess currently, but...

[remoteglot] / www / analysis.pl

diff --git a/www/analysis.pl b/www/analysis.pl
new file mode 100755 (executable)
index 0000000..9b45cc7
--- /dev/null
+++ b/www/analysis.pl
@@ -0,0 +1,63 @@
+#! /usr/bin/perl
+use CGI;
+use POSIX;
+use Date::Manip;
+use Linux::Inotify2;
+use AnyEvent;
+use strict;
+use warnings;
+
+my $cv = AnyEvent->condvar;
+my $updated = 0;
+my $cgi = CGI->new;
+my $inotify = Linux::Inotify2->new;
+$inotify->watch("/srv/analysis.sesse.net/analysis.json", IN_MODIFY, sub {
+       $updated = 1;
+       $cv->send;
+});
+        
+my $inotify_w = AnyEvent->io (
+       fh => $inotify->fileno, poll => 'r', cb => sub { $inotify->poll }
+);
+my $wait = AnyEvent->timer (
+       after => 30,
+       cb    => sub { $cv->send; },
+);
+
+my $ims = 0;
+if (exists($ENV{'HTTP_IF_MODIFIED_SINCE'})) {
+       my $date = Date::Manip::Date->new;
+       $date->parse($ENV{'HTTP_IF_MODIFIED_SINCE'});
+       $ims = $date->printf("%s");
+}
+my $time = (stat("/srv/analysis.sesse.net/analysis.json"))[9];
+
+# If we have something that's modified since IMS, send it out at once
+if ($time > $ims) {
+       output();
+       exit;
+}
+
+# If not, wait, then send. Apache will deal with the 304-ing.
+if (defined($cgi->param('first')) && $cgi->param('first') != 1) {
+       $cv->recv;
+}
+output();
+
+sub output {
+       my $time = (stat("/srv/analysis.sesse.net/analysis.json"))[9];
+       my $lm_str = POSIX::strftime("%a, %d %b %Y %H:%M:%S %z", localtime($time));
+
+       print CGI->header(-type=>'text/json',
+                         -last_modified=>$lm_str,
+                         -access_control_allow_origin=>'http://analysis.sesse.net',
+                         -expires=>'now');
+       open my $fh, "<", "/srv/analysis.sesse.net/analysis.json"
+               or die "/srv/analysis.sesse.net/analysis.json: $!";
+       my $data;
+       {
+               local $/ = undef;
+               $data = <$fh>;
+       }
+       print $data;
+}