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Full Discussion: Debugging Our Computer Science Trivia Feature
The Lounge What is on Your Mind? Debugging Our Computer Science Trivia Feature Post 303040643 by Neo on Sunday 3rd of November 2019 02:04:15 AM
Old 11-03-2019
OK.. there is a problem with Safari and their Cross-Origin Resource Sharing (CORS) implementation, which is causing Javascript errors when ads or videos are served.

This bug is causing an error in the Trivia JS code, so I have am disabling the trivia for guests (not logged in) who are using Safari (for now, in both mobile and desktop):

Code:
<?php
$user_agent = $_SERVER['HTTP_USER_AGENT'];
if ($vbulletin->userinfo['userid'] < '1') {
    if (stripos($user_agent, 'Chrome') !== false) {
        define('ENABLE_SAFARI_UA', true);
    } else {
        if (stripos($user_agent, 'Safari') !== false) {
            define('ENABLE_SAFARI_UA', false);
            $log = '/var/log/apache2/debug/neo_trivia_global_safari_debug.log';
            error_log(date(DATE_RFC822) . ' UA ' . $user_agent . "\n", 3, $log);
        } else {
            define('ENABLE_SAFARI_UA', true);
        }
    }
} else {
    define('ENABLE_SAFARI_UA', true);
}

I will think about another "fix" for this later.
 

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LEARN ABOUT DEBIAN

osmjs

OSMJS(1)						      General Commands Manual							  OSMJS(1)

NAME

       osmjs - Javascript interpreter for the Osmium framework

SYNOPSIS

       osmjs [options] osmfile [args]

DESCRIPTION

       This manual page documents briefly the osmjs command.

       osmjs  is  an  Osmium based framework for handling OSM data by calling Javascript callbacks for each object in an OSM data file. This gives
       you the flexibility of Javascript together with speed of the C++ Osmium framework and the Google V8 Javascript JIT compiler.

       osmfile can be an OSM XML (suffix .osm) (optionally packed with bz2 or gz) or PBF (suffix .osm.pbf) file. In single-pass mode it  can  also
       be '-' to read a PBF file from stdin.

OPTIONS

       This  program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included
       below.

       -h, --help
	      Show summary of options.

       -d, --debug
	      Enable debugging output.

       -i FILE, --include=FILE
	      Include Javascript file (can be given several times)

       -j FILE, --javascript=FILE
	      Process given Javascript file

       -l STORE, --location-store=STORE
	      Set location store (default: 'none'). See below for a list of available stores.

       -r, --no-repair
	      Do not attempt to repair broken multipolygons

       -2, --2pass
	      Read osmfile twice

       -m, --multipolygon
	      Build multipolygons (implies -2)

STORES

       none   Do not store node locations (you will have no way or polygon geometries)

       array  Store node locations in large array (use for large OSM files)

       disk   Store node locations on disk (use when low on memory)

       sparsetable
	      Store node locations in sparse table (use for small OSM files)

AUTHOR

       Osmium was written by Jochen Topf <jochen@topf.org>.

       This manual page was written by David Paleino <dapal@debian.org>, for the Debian project (and may be used by others).

								 November 14, 2011							  OSMJS(1)
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