function wfu_ajax_action_callback()
{
$user = wp_get_current_user();
$arr = wfu_get_params_fields_from_index($_POST['params_index']);
//check referrer using server sessions to avoid CSRF attacks
if ($_SESSION["wfu_token_" . $arr['shortcode_id']] != $_POST['session_token']) {
echo "Session failed!<br/><br/>Session Data:<br/>";
print_r(wfu_sanitize($_SESSION));
echo "<br/><br/>Post Data:<br/>";
print_r(wfu_sanitize($_POST));
die('force_errorabort_code');
}
if ($user->user_login != $arr['user_login']) {
echo "User failed!<br/><br/>User Data:<br/>";
print_r(wfu_sanitize($user));
echo "<br/><br/>Post Data:<br/>";
print_r(wfu_sanitize($_POST));
echo "<br/><br/>Params Data:<br/>";
print_r(wfu_sanitize($arr));
die('force_errorabort_code');
}
//get the unique id of the upload
$unique_id = isset($_POST['unique_id']) ? $_POST['unique_id'] : "";
//the first pass to this callback script is for closing the previous connection_aborted
if (isset($_POST["force_connection_close"]) && $_POST["force_connection_close"] === "1") {
header("Connection: Close");
die("success");
}
//if upload has finished then perform post upload actions
if (isset($_POST["upload_finished"]) && $_POST["upload_finished"] === "1") {
die("success");
}
$params_str = get_option('wfu_params_' . $arr['unique_id']);
$params = wfu_decode_array_from_string($params_str);
$params['subdir_selection_index'] = $_POST['subdir_sel_index'];
$_SESSION['wfu_check_refresh_' . $params["uploadid"]] = 'do not process';
$wfu_process_file_array = wfu_process_files($params, 'ajax');
// extract safe_output from wfu_process_file_array and pass it as separate part of the response text
$safe_output = $wfu_process_file_array["general"]['safe_output'];
unset($wfu_process_file_array["general"]['safe_output']);
die("wfu_fileupload_success:" . $safe_output . ":" . wfu_encode_array_to_string($wfu_process_file_array));
}
function wfu_ajax_action_callback()
{
if (!isset($_REQUEST['session_token'])) {
die;
}
$session_token = sanitize_text_field($_REQUEST["session_token"]);
if ($session_token == "") {
die;
}
/* This section is executed when forceclassic is enabled or when redirection to the classic uploader was performed */
if (isset($_REQUEST['sid']) && isset($_REQUEST['start_time'])) {
//this request came from classic non-HTML5 uploader
$sid = sanitize_text_field($_REQUEST["sid"]);
if ($sid == "") {
die;
}
$start_time = sanitize_text_field($_REQUEST["start_time"]);
$_SESSION['wfu_check_refresh_' . $sid] = 'form button pressed';
$_SESSION['wfu_start_time_' . $sid] = $start_time;
die("wfu_response_success:");
}
/* This section is executed when normal HTML5 upload is performed */
if (!isset($_REQUEST['params_index'])) {
die;
}
$params_index = sanitize_text_field($_REQUEST["params_index"]);
if ($params_index == "") {
die;
}
$user = wp_get_current_user();
$arr = wfu_get_params_fields_from_index($params_index);
$sid = $arr['shortcode_id'];
//check referrer using server sessions to avoid CSRF attacks
if ($_SESSION["wfu_token_" . $sid] != $session_token) {
echo "Session failed!<br/><br/>Session Data:<br/>";
print_r(wfu_sanitize($_SESSION));
echo "<br/><br/>Post Data:<br/>";
print_r(wfu_sanitize($_POST));
die('force_errorabort_code');
}
if ($user->user_login != $arr['user_login']) {
echo "User failed!<br/><br/>User Data:<br/>";
print_r(wfu_sanitize($user));
echo "<br/><br/>Post Data:<br/>";
print_r(wfu_sanitize($_POST));
echo "<br/><br/>Params Data:<br/>";
print_r(wfu_sanitize($arr));
die('force_errorabort_code');
}
//if force_connection_close is set, then the first pass to this callback script is for closing the previous connection
if (isset($_POST["force_connection_close"]) && $_POST["force_connection_close"] === "1") {
header("Connection: Close");
die("success");
}
//get the unique id of the upload
$unique_id = isset($_POST['uniqueuploadid_' . $sid]) ? sanitize_text_field($_POST['uniqueuploadid_' . $sid]) : "";
if (strlen($unique_id) != 10) {
die('force_errorabort_code');
}
//if upload has finished then perform post upload actions
if (isset($_POST["upload_finished"]) && $_POST["upload_finished"] === "1") {
die("success");
}
$params_str = get_option('wfu_params_' . $arr['unique_id']);
$params = wfu_decode_array_from_string($params_str);
//if this is the first pass of an upload attempt then perform pre-upload actions
if (!isset($_SESSION['wfu_upload_first_pass_' . $unique_id]) || $_SESSION['wfu_upload_first_pass_' . $unique_id] != 'true') {
$_SESSION['wfu_upload_first_pass_' . $unique_id] = 'true';
}
if (!isset($_POST["subdir_sel_index"])) {
die;
}
$subdir_sel_index = sanitize_text_field($_POST["subdir_sel_index"]);
$params['subdir_selection_index'] = $subdir_sel_index;
$_SESSION['wfu_check_refresh_' . $params["uploadid"]] = 'do not process';
$wfu_process_file_array = wfu_process_files($params, 'ajax');
// extract safe_output from wfu_process_file_array and pass it as separate part of the response text
$safe_output = $wfu_process_file_array["general"]['safe_output'];
unset($wfu_process_file_array["general"]['safe_output']);
// get javascript code that has been defined in wfu_after_file_upload action
$js_script = wfu_plugin_encode_string($wfu_process_file_array["general"]['js_script']);
unset($wfu_process_file_array["general"]['js_script']);
die("wfu_fileupload_success:" . $js_script . ":" . $safe_output . ":" . wfu_encode_array_to_string($wfu_process_file_array));
}
function wfu_sanitize($var)
{
$typ = gettype($var);
if ($typ == "boolean" || $typ == "integer" || $typ == "double" || $typ == "resource" || $typ == "NULL") {
return $var;
} elseif ($typ == "string") {
return htmlspecialchars($var);
} elseif ($typ == "array" || $typ == "object") {
foreach ($var as &$item) {
$item = wfu_sanitize($item);
}
return $var;
} else {
return $typ;
}
}
function wfu_ajax_action_callback()
{
if (!isset($_REQUEST['session_token'])) {
die;
}
$session_token = sanitize_text_field($_REQUEST["session_token"]);
if ($session_token == "") {
die;
}
check_ajax_referer('wfu-uploader-nonce', 'wfu_uploader_nonce');
if (!isset($_REQUEST['params_index'])) {
die;
}
$params_index = sanitize_text_field($_REQUEST["params_index"]);
if ($params_index == "") {
die;
}
$user = wp_get_current_user();
$arr = wfu_get_params_fields_from_index($params_index);
$sid = $arr['shortcode_id'];
//check referrer using server sessions to avoid CSRF attacks
if ($_SESSION["wfu_token_" . $sid] != $session_token) {
echo "Session failed!<br/><br/>Session Data:<br/>";
print_r(wfu_sanitize($_SESSION));
echo "<br/><br/>Post Data:<br/>";
print_r(wfu_sanitize($_POST));
die('force_errorabort_code');
}
if ($user->user_login != $arr['user_login']) {
echo "User failed!<br/><br/>User Data:<br/>";
print_r(wfu_sanitize($user));
echo "<br/><br/>Post Data:<br/>";
print_r(wfu_sanitize($_POST));
echo "<br/><br/>Params Data:<br/>";
print_r(wfu_sanitize($arr));
die('force_errorabort_code');
}
//if force_connection_close is set, then the first pass to this callback script is for closing the previous connection
if (isset($_POST["force_connection_close"]) && $_POST["force_connection_close"] === "1") {
header("Connection: Close");
die("success");
}
//get the unique id of the upload
$unique_id = isset($_POST['uniqueuploadid_' . $sid]) ? sanitize_text_field($_POST['uniqueuploadid_' . $sid]) : "";
if (strlen($unique_id) != 10) {
die('force_errorabort_code');
}
//if before upload actions have been executed and they have rejected the
//upload, but for some reason (hack attempt) the upload continued, then
//terminate it
if (isset($_SESSION["wfu_uploadstatus_" . $unique_id]) && $_SESSION["wfu_uploadstatus_" . $unique_id] == 0) {
die('force_errorabort_code');
}
//if upload has finished then perform post upload actions
if (isset($_POST["upload_finished"]) && $_POST["upload_finished"] === "1") {
$echo_str = "";
//execute after upload filters
$ret = wfu_execute_after_upload_filters($sid, $unique_id);
if ($ret["js_script"] != "") {
$echo_str = "CBUVJS[" . $ret["js_script"] . "]";
}
die($echo_str);
}
$params_str = get_option('wfu_params_' . $arr['unique_id']);
$params = wfu_decode_array_from_string($params_str);
//apply filters to determine if the upload will continue or stop
$ret = array("status" => "", "echo" => "");
$attr = array("sid" => $sid, "unique_id" => $unique_id, "params" => $params);
$ret = apply_filters("_wfu_pre_upload_check", $ret, $attr);
if ($ret["status"] == "die") {
die($ret["echo"]);
}
//if this is the first pass of an upload attempt then perform pre-upload actions
if (!isset($_SESSION['wfu_upload_first_pass_' . $unique_id]) || $_SESSION['wfu_upload_first_pass_' . $unique_id] != 'true') {
$_SESSION['wfu_upload_first_pass_' . $unique_id] = 'true';
}
if (!isset($_POST["subdir_sel_index"])) {
die;
}
$subdir_sel_index = sanitize_text_field($_POST["subdir_sel_index"]);
$params['subdir_selection_index'] = $subdir_sel_index;
$_SESSION['wfu_check_refresh_' . $params["uploadid"]] = 'do not process';
$wfu_process_file_array = wfu_process_files($params, 'ajax');
// extract safe_output from wfu_process_file_array and pass it as separate part of the response text
$safe_output = $wfu_process_file_array["general"]['safe_output'];
unset($wfu_process_file_array["general"]['safe_output']);
// get javascript code that has been defined in wfu_after_file_upload action
$js_script = wfu_plugin_encode_string($wfu_process_file_array["general"]['js_script']);
unset($wfu_process_file_array["general"]['js_script']);
die("wfu_fileupload_success:" . $js_script . ":" . $safe_output . ":" . wfu_encode_array_to_string($wfu_process_file_array));
}
