Function check_plugin_api_version

src/core/plugin-loader.cpp:82–121

}

static bool check_plugin_api_version(const std::string& path, bool can_unload_so)
{
    // First, open everything just locally and in a lazy way.
    // We want to check just the API/ABI version.
    // If we load with RTLD_NOW, if the API/ABI version is wrong, we may get a crash just by
    // dlopen()-ing the plugin.
    void *handle = dlopen(path.c_str(), RTLD_LOCAL | RTLD_LAZY);
    if (handle == NULL)
    {
        LOGE("error loading plugin [", path, "]: ", dlerror());
        return false;
    }

    /* Check plugin version */
    auto version_func_ptr = dlsym(handle, "getWayfireVersion");
    if (version_func_ptr == NULL)
    {
        LOGE(path, ": missing getWayfireVersion()", path.c_str());
        dlclose(handle);
        return false;
    }

    auto version_func = wf::union_cast<void*, wayfire_plugin_version_func>(version_func_ptr);
    int32_t plugin_abi_version = version_func();

    if (version_func() != WAYFIRE_API_ABI_VERSION)
    {
        LOGE(path, ": API/ABI version mismatch: Wayfire is ",
            WAYFIRE_API_ABI_VERSION, ",  plugin built with ", plugin_abi_version);
        dlclose(handle);
        return false;
    }

    if (can_unload_so)
    {
        dlclose(handle);
    }

    return true;
}

std::pair<void*, void*> wf::get_new_instance_handle(const std::string& path, bool can_unload_so)
{