241 lines
7.6 KiB
PHP
241 lines
7.6 KiB
PHP
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<?php
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/**
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* Plugin No-SPAM
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* (c) 2008-2019 Cedric Morin Yterium&Nursit
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* Licence GPL
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*
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*/
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define('_DIR_CONFIRM_ACTIONS', 'actions_a_confirmer');
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/**
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* Traiter la confirmation d'action envoyee par le navigateur apres le POST du formulaire
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*/
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function action_nospam_confirm_action_dist() {
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$securiser_action = charger_fonction('securiser_action', 'inc');
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$hash = $securiser_action();
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$dir_actions = sous_repertoire(_DIR_TMP,_DIR_CONFIRM_ACTIONS);
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if (file_exists($fichier_action = $dir_actions. $hash . '.json')) {
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lire_fichier($fichier_action, $desc_json);
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if ($desc_json and $hash === nospam_hash_action($desc_json)) {
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if ($desc = json_decode($desc_json, true)) {
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// on move ce fichier, le temps de l'execution, pour eviter une double exec (les navs font parfois un double hit sur l'iframe)
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@rename($fichier_action, $fichier_action = $fichier_action . ".inprogress");
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// si on a fournit un time alors il faut ajouter l'action dans la queue
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if (!is_null($desc['time'])) {
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spip_log("nospam_confirm_action_dist $hash: ajout de l'action a job_queue $desc_json", 'nospam' . _LOG_DEBUG);
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job_queue_add($desc['function'], $desc['description'], $desc['arguments'], $desc['file'], false, $desc['time']);
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}
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else {
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$fonction = $desc['function'];
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if (strlen($inclure = trim($desc['file']))) {
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if (substr($inclure, -1) == '/') { // c'est un chemin pour charger_fonction
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$f = charger_fonction($fonction, rtrim($inclure, '/'), false);
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if ($f) {
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$fonction = $f;
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}
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} else {
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include_spip($inclure);
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}
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}
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if (!function_exists($fonction)) {
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spip_log("nospam_confirm_action_dist $hash: fonction $fonction ($inclure) inexistante $desc_json", 'nospam' . _LOG_ERREUR);
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}
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else {
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$res = call_user_func_array($fonction, $desc['arguments']);
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spip_log("nospam_confirm_action_dist $hash: execution de $fonction() $desc_json RES=" . var_export($res,true), 'nospam' . _LOG_DEBUG);
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}
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}
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}
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else {
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spip_log("nospam_confirm_action_dist:contenu action $desc_json invalide", 'nospam' . _LOG_ERREUR);
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}
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}
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else {
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spip_log("nospam_confirm_action_dist:hash $hash errone: contenu action $desc_json", 'nospam' . _LOG_ERREUR);
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}
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// dans tous les cas on purge ce fichier, l'action est faite ou impossible
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@unlink($fichier_action);
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}
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else {
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// pas la peine de loger si le fichier .inprogress est la, c'est un autre thread qui s'en occupe
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if (!file_exists($fichier_action . '.inprogress')) {
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spip_log("nospam_confirm_action_dist:hash $hash errone: fichier $fichier_action absent (doublon deja execute ?)", 'nospam' . _LOG_ERREUR);
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}
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}
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// supprimer les actions plus vieilles que 5mn en les logeant
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$old_time = $_SERVER['REQUEST_TIME'] - 5 * 60;
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nospam_purge_actions($dir_actions, ['mtime' => $old_time, 'limit' => 1000]);
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// et on renvoie un html minimum
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if (!_request('redirect')) {
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include_spip('inc/headers');
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http_status(204); // No Content
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header("Connection: close");
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}
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}
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/**
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* Generer le HTML a afficher pour faire confirmer une action par l'utilisateur a son insu
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* (antispam qui declenche donc l'action uniquement si l'utilisateur charge les ressources de la page)
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*
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* @param string $function
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* @param string $description
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* @param array $arguments
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* @param string $file
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* @param null $time
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* @param string $method
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* @return string
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*/
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function nospam_confirm_action_prepare(
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$function,
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$description,
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$arguments = array(),
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$file = '',
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$time = null,
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$method = 'script') {
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// on stocke le descriptif de l'action a lancer dans un fichier
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$desc = [
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'function' => $function,
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'description' => $description,
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'arguments' => $arguments,
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'file' => $file,
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'time' => $time,
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// et des infos pour qualifier les spammeurs plus tard si besoin
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'ip' => $GLOBALS['ip'],
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'date' => date('Y-m-d H:i:s', $_SERVER['REQUEST_TIME']), // pour les logs, on met la date de la demande d'action
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'ua' => isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : 'undefined',
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];
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$desc = json_encode($desc);
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$dir_actions = sous_repertoire(_DIR_TMP,_DIR_CONFIRM_ACTIONS);
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$hash = nospam_hash_action($desc);
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ecrire_fichier($dir_actions . $hash . ".json", $desc);
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include_spip('inc/actions');
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include_spip('inc/filtres');
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$url_action = str_replace("&", "&", generer_action_auteur("nospam_confirm_action", $hash));
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$url_action_redirect = parametre_url($url_action, 'redirect', self(), '&');
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switch ($method) {
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case 'iframe':
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$title = attribut_html(_T('nospam:info_alt_antispam'));
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$html_action = "<iframe src='$url_action' width='1' height='1' style='display:inline-block;border:0;background:transparent;overflow:hidden;' title='$title'></iframe>";
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break;
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case 'script':
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default:
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$bouton_action = charger_filtre('bouton_action');
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$libelle = attribut_html(_T('nospam:libelle_je_ne_suis_pas_un_robot'));
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$html_action = $bouton_action($libelle, $url_action_redirect, 'btn-primary btn-sm btn-antispam');
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$js = "jQuery.ajax({url: '{$url_action}'}).done(function(){jQuery('.nospam-checkbox').addClass('checked');})";
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$html_action = "<span class='nospam-checkbox small'></span><script>$js</script><noscript>$html_action</noscript>";
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$css = file_get_contents(find_in_path('css/nospam-checkbox.min.css'));
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$html_action .= "<style type='text/css'>$css</style>";
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break;
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}
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// supprimer des actions plus vieilles que 5mn en les logeant
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// si on le fait qu'a l'exec d'action legitime, on risque le flood si y a que des spammeurs !
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$old_time = $_SERVER['REQUEST_TIME'] - 5 * 60;
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nospam_purge_actions($dir_actions, ['mtime' => $old_time, 'limit' => 10]);
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return $html_action;
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}
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/**
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* Calculer un hash pour une action donnee
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*
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* @param $desc_json
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* @return bool|string
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*/
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function nospam_hash_action($desc_json) {
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if (!function_exists('secret_du_site')) {
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include_spip('inc/securiser_action');
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}
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$hash = substr(md5(__FILE__ . secret_du_site() . $desc_json), 0, 16);
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return $hash;
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}
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/**
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* Purge le répertoire des actions en logant tout ce qu'on purge
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*
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* @param string $dir
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* Chemin du répertoire à purger
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* @param array $options
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* Tableau des options. Peut être :
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*
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* - atime : timestamp pour ne supprimer que les fichiers antérieurs
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* à cette date (via fileatime)
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* - mtime : timestamp pour ne supprimer que les fichiers antérieurs
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* à cette date (via filemtime)
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* - limit : nombre maximum de suppressions
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* @return int
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* Nombre de fichiers supprimés
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**/
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function nospam_purge_actions($dir, $options = array()) {
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if (!is_dir($dir) or !is_readable($dir)) {
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return;
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}
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$handle = opendir($dir);
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if (!$handle) {
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return;
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}
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$total = 0;
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while (($fichier = @readdir($handle)) !== false) {
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// Eviter ".", "..", ".htaccess", ".svn" etc.
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if ($fichier[0] == '.') {
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continue;
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}
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$chemin = "$dir/$fichier";
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if (is_file($chemin)) {
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if ((!isset($options['atime']) or (@fileatime($chemin) < $options['atime']))
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and (!isset($options['mtime']) or (@filemtime($chemin) < $options['mtime']))
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) {
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$action = file_get_contents($chemin);
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spip_log("Purge action non confirmee $fichier: $action", 'nospam_unconfirmed' . _LOG_INFO_IMPORTANTE);
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@unlink($chemin);
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$total++;
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}
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} else {
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if (is_dir($chemin)) {
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$opts = $options;
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if (isset($options['limit'])) {
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$opts['limit'] = $options['limit'] - $total;
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}
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$total += nospam_purge_actions($chemin, $opts);
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if (isset($options['subdir']) && $options['subdir']) {
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spip_unlink($chemin);
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}
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}
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}
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if (isset($options['limit']) and $total >= $options['limit']) {
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break;
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}
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}
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closedir($handle);
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return $total;
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}
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