EWWW Image Optimizer compatibility

  • Unknown's avatar
    nosilver4u · Member ·

    Hi, I’m the author of EWWW IO, and recently had a couple folks mention they were using EWWW IO on your platform. The first was using our API, which works anywhere. But the second individual was trying to use the free version, which relies on exec, and uses local versions of jpegtran, optipng, etc.

    It didn’t seem to be working though, and so I wondered what the technical constraints are with the business plans. He was getting permissions errors, but the actual permissions looked correct. It seemed as if something else was preventing executables from running in the webroot.

    So, could someone clarify what is actually possible with a wp.com business plan? Should the executables actually run, or do I need to guide wp.com folks to use the API for image optimization? If the latter, is there some constant defined on wp.com sites, or some way to auto-detect the wp.com platform for that purpose?

    Thanks!

  • Unknown's avatar
    timethief · Member ·

    While you are waiting for a Staff response you may want to read:
    https://en.support.wordpress.com/business-plan/

    Plugins


    https://en.support.wordpress.com/plugins/adding-plugins/

  • Unknown's avatar
    thesacredpath · Member ·

    Hi @nosilver4u, do you know if they sites that were using your software are self-hosted, or were they hosted here at WordPress.com? There are some restrictions on Business Plan sites here, and it could be that what is required to run the free version is not part of our system.

    A link or two to a couple of sites would be helpful, if you can provide them.

  • Unknown's avatar
    nosilver4u · Member ·

    These two sites were indeed hosted at WordPress.com. I believe both were using the business plan. The one in particular that was trying to use the free mode of the plugin is at https://notimefindtime.com/

    To use the “free mode”, the plugin requires exec(), and the ability to run exec() on binaries located in the wp-content/ewww/ folder.
    That site was getting this message when trying to run one of the binaries:
    sh: 1: /wpcom-xxxxxxxxx/wp-content/ewww/gifsicle: Permission denied

  • Unknown's avatar
    thesacredpath · Member ·

    Thanks @nosilver4u, I checked with our systems people, and for security reasons, we do not allow running of binary files on our platform.

  • Unknown's avatar
    nosilver4u · Member ·

    Alright, so the next question, is there some constant defined on wp.com sites, or some way to auto-detect the wp.com platform, to let users know free mode doesn’t work?

  • staff-zinnia · Staff ·

    Howdy –

    I am not certain whether or not this is possible. To be certain I’ve asked the appropriate team to have a look. Once I hear back form them I will send another update here.

  • druesome · Staff ·

    @nosilver4u

    Alright, so the next question, is there some constant defined on wp.com sites, or some way to auto-detect the wp.com platform, to let users know free mode doesn’t work?

    You may check whether the WPCOMSH_VERSION constant is defined. Alternately, why not simply check if the binary is executable with is_executable given that any other host may also not allow exec?

  • Unknown's avatar
    nosilver4u · Member ·

    That’s a good question, and the plugin actually does an is_executable check. That, of course, fails, and results in a message that tells them the plugin needs jpegtran, optipng, and gifsicle to function OR an API key. From there, folks often end up asking how they can fix the “missing binary” problem or trying to work through the docs article we have on the subject. What I’d rather do for wp.com folks is save them some time and just let them know up front that the plugin is going to require an API key. So checking for that constant will be most helpful, thanks!

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