Monday, October 17, 2016

Wayfar 1444 will suspend service as of 11/10/16

The domain will no longer be available starting 10th Nov. If service resumes a notice will be posted on this blog. Previous articles, which may be helpful for hellcore users, will remain available at indefinitely. Thanks to the many players that tried our game, and if a new game is released, or MOO service resumed, you will be notified!

 Love, El Management

Sunday, October 16, 2016

Tutorial: Exporting JSON from Hellcore for use with jquery Datatables

* Step 1: HTML or PHP template page

 You will need jquery and datatables, which can be downloaded to your local folders. These will be included in our PHP pages later. Let's say we want to display all weapons, here is the template (HTML or PHP). You must replace $weapons_db with the actual OBJNUM of your weapons database:

<html> <head><title>Weapons Table</title> <script src="/lib/jquery-3.1.1.min.js" type="text/javascript"></script> <script src="/lib/datatables.min.js" type="text/javascript"></script> <link href="/lib/datatables.min.css" rel="sylesheet" type="text/css"></link> <script type="text/javascript"> $(document).ready(function() { $('#weapons').DataTable( { "ajax": "$weapons_db" } ); } ); </script> </head> <body> <table class="display" id="weapons"> <thead> <tr> <th>ID</th> <th>Name</th> </tr> </thead> </table> </body> </html> * Step 2: PHP ajax page

 Query.php is a PHP file that queries the MOO server on port 8080. This is already setup by default in hellcore, but you need some modifications, firstly to $json_utils:_www
$json_utils:"_www _html"       this none this
       wargs = $su:explode(args[1], "/");
       if (length(wargs) > 1)
         item = toobj(wargs[2]);
         if (gamevalid(item))
           data = item:_json();
           return {data};
     except e (ANY)
       return pass(@args);
   return pass(@args);
This changes the $json_utils:_www verb to accept an additional objects. Now let's make query.php: You must replace $json_utils in the code above with the actual object number of your JSON utils object. The code above means that we call json_utils, and we pass it an additional argument in the form of:$json_utils/desired_objectnumber

 * Step 3:
Now - our desired_objectnumber must have _json verb, and it must return formatted json (not HTML). Note that the data is structed very specifically to comply with jquery datatables. Example:
w = $ou:fertile_branches($weapon);
data = [];
data = ["data" -> {}];
for x in (w)
  id = tostr(x)[2..$];
  d = data["data"];
  d = setadd(d, {id, x:name()});
  data["data"] = d;
return $json_utils:encode(data);

* Step 4: Getting JSON from our MOO server$weapons
Will now return JSON output, something like this (partial): {"data":[["13477","generic melee weapon"],["14111","shock baton"], This has hopefully given you some hints for exporting this data. Modifying it, in MOO, on the fly, is also possible, with callbacks in datatables, but is more advanced. If you get the basics working, you'll see something like an auto paginating page like this:

*Step 5: Security
Use iptables to ONLY allow requests to query.php, and from your own domain. Google this!
Questions? Comments?
Post them below!

Monday, October 10, 2016

Transition to Amazon managed DNS

Wayfar has originally run its own DNS servers.  I shifted this to Amazon, since I am moving the server and no longer want to run DNS services on the box itself.

First step - the easy part:

Import your zone file into Route 53 Amazon.  It costs about a dollar a month.

Hard part: you have a second server that you'd like to modify and upgrade before fully moving to it as your primary server.

Step 1:

Get these scripts installed and configure not just the DNS ( for instance), but also a user (updateip or dyndns) with the appropriate permissions.  Run the updateip script to make sure that your changes are reflected in the amazon dashboard.

Once you've confirmed that the changes are actually taking effect, use crontab to add this to your server and keep amazon's DNS service updated with your actual IP by calling crontab -e:

*/30 * * * * /home/wayfar/www/ YOURHOSTEDZONEHERE your-iam-user