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@@ -142,6 +142,25 @@ class dbPrefs {
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var $default = Array('theme_default' => 0,
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'show_html_default' => '0');
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+ /**
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+ * Preference owner field size
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+ * @var integer
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+ * @since 1.5.1
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+ */
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+ var $user_size = 128;
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+ /**
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+ * Preference key field size
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+ * @var integer
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+ * @since 1.5.1
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+ */
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+ var $key_size = 64;
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+ /**
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+ * Preference value field size
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+ * @var integer
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+ * @since 1.5.1
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+ */
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+ var $val_size = 65536;
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+
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/**
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* initialize DB connection object
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* @return boolean true, if object is initialized
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@@ -149,6 +168,7 @@ class dbPrefs {
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function open() {
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global $prefs_dsn, $prefs_table;
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global $prefs_user_field, $prefs_key_field, $prefs_val_field;
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+ global $prefs_user_size, $prefs_key_size, $prefs_val_size;
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if(isset($this->dbh)) {
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return true;
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@@ -172,6 +192,15 @@ class dbPrefs {
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if (!empty($prefs_val_field)) {
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$this->val_field = $prefs_val_field;
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}
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+ if (!empty($prefs_user_size)) {
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+ $this->user_size = (int) $prefs_user_size;
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+ }
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+ if (!empty($prefs_key_size)) {
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+ $this->key_size = (int) $prefs_key_size;
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+ }
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+ if (!empty($prefs_val_size)) {
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+ $this->val_size = (int) $prefs_val_size;
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+ }
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$dbh = DB::connect($prefs_dsn, true);
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if(DB::isError($dbh)) {
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@@ -261,6 +290,46 @@ class dbPrefs {
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if (!$this->open()) {
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return false;
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}
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+
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+ /**
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+ * Check if username fits into db field
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+ */
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+ if (strlen($user) > $this->user_size) {
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+ $this->error = "Oversized username value."
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+ ." User's preferences can't be saved. See doc/db-backend.txt troubleshooting documentation.";
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+
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+ /**
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+ * Debugging function. Can be used to log all issues that trigger
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+ * oversized field errors. Function should be enabled in all three
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+ * strlen checks. See http://www.php.net/error-log
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+ */
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+ // error_log($user.'|'.$key.'|'.$value."\n",3,'/tmp/oversized_log');
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+
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+ // error is fatal
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+ $this->failQuery(null);
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+ }
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+ /**
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+ * Check if preference key fits into db field
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+ */
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+ if (strlen($key) > $this->key_size) {
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+ $err_msg = "Oversized user's preference key."
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+ ." Some user preferences are not saved. See doc/db-backend.txt troubleshooting documentation.";
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+ // error is not fatal. Only some preference is not saved.
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+ trigger_error($err_msg,E_USER_WARNING);
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+ return false;
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+ }
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+ /**
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+ * Check if preference value fits into db field
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+ */
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+ if (strlen($value) > $this->val_size) {
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+ $err_msg = "Oversized user's preference value."
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+ ." Some user preferences are not saved. See doc/db-backend.txt troubleshooting documentation.";
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+ // error is not fatal. Only some preference is not saved.
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+ trigger_error($err_msg,E_USER_WARNING);
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+ return false;
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+ }
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+
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+
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if ($this->db_type == SMDB_MYSQL) {
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$query = sprintf("REPLACE INTO %s (%s, %s, %s) ".
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"VALUES('%s','%s','%s')",
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tokul