async function set_addons_as_signed() {
    Components.utils.import("resource://gre/modules/addons/XPIProvider.jsm");
    Components.utils.import("resource://gre/modules/AddonManager.jsm");
    let XPIDatabase = this.XPIInternal.XPIDatabase;
    let addons = await XPIDatabase.getAddonList(a => true);
    for (let addon of addons) {
        if (!addon._sourceBundle.exists())
            continue;
        if( addon.signedState != AddonManager.SIGNEDSTATE_UNKNOWN)
            continue;
        addon.signedState = AddonManager.SIGNEDSTATE_NOT_REQUIRED;
                AddonManagerPrivate.callAddonListeners("onPropertyChanged",
                    addon.wrapper,
                    ["signedState"]);
        await XPIProvider.updateAddonDisabledState(addon);
    }
    XPIDatabase.saveChanges();
}
set_addons_as_signed();