/**
* Hook method to handle the remote request to install an add-on
*
* This is used as a callback when the admin picks a plugin version in the
* Moodle Plugins directory and is redirected back to their site to install
* it.
*
* This hook is called early from admin/tool/installaddon/index.php page so that
* it has opportunity to take over the UI and display the first confirmation screen.
*
* @param tool_installaddon_renderer $output
* @param string|null $request
*/
public function handle_remote_request(tool_installaddon_renderer $output, $request)
{
if (is_null($request)) {
return;
}
$data = $this->decode_remote_request($request);
if ($data === false) {
echo $output->remote_request_invalid_page($this->index_url());
exit;
}
list($plugintype, $pluginname) = core_component::normalize_component($data->component);
$pluginman = core_plugin_manager::instance();
$plugintypepath = $pluginman->get_plugintype_root($plugintype);
if (file_exists($plugintypepath . '/' . $pluginname)) {
echo $output->remote_request_alreadyinstalled_page($data, $this->index_url());
exit;
}
if (!$pluginman->is_plugintype_writable($plugintype)) {
$continueurl = $this->index_url(array('installaddonrequest' => $request));
echo $output->remote_request_permcheck_page($data, $plugintypepath, $continueurl, $this->index_url());
exit;
}
if (!$pluginman->is_remote_plugin_installable($data->component, $data->version, $reason)) {
$data->reason = $reason;
echo $output->remote_request_non_installable_page($data, $this->index_url());
exit;
}
$continueurl = $this->index_url(array('installremote' => $data->component, 'installremoteversion' => $data->version));
echo $output->remote_request_confirm_page($data, $continueurl, $this->index_url());
exit;
}
