~~Title: Mod Installer ~~
{{tag>Modding}}
The Mod Installer lets users install mods into their game from a single link click from any website.\\
Links are created like this:
  * Install Mod: <code>UMF://Action=InstallMod&&Game=<gamename>&&File=<modfile>&&URL=<downloadurl></code>
  * Uninstall Mod: <code>UMF://Action=UninstallMod&&Game=<gamename>&&File=<uninstallpattern></code>
  * Install Mod Library: <code>UMF://Action=InstallLib&&Game=<gamename>&&File=<libfile>&&URL=<downloadurl></code>
  * Uninstall Mod Library: <code>UMF://Action=UninstallLib&&Game=<gamename>&&File=<uninstallpattern></code>

  * Replace ''<gamename>'' with a lower case no space version of the game name.
  * Replace ''<modfile>'' with the file name of the mod to be installed.
  * Replace ''<downloadurl>'' with the URL from which the mod should be downloaded from.
  * Replace ''<uninstallpattern>'' with a file name pattern or file name. This supports wildcards.

In order for this to work the web server must provide the following headers:
  * X-Download-Options: noopen
  * Content-Disposition: attachment; filename="<filename>"
Some web browsers may provide these headers by default, but in most cases you will have to configure your web server to add these.