Fix bug where serialized strings were truncated in PDO::quote() (#1489142)

Aleksander Machniak

2013-06-02 a6b0ca60a431b8e56d7c23246de71978d6968a79

 program/lib/Roundcube/rcube_cache_shared.php

@@ -144,7 +144,7 @@
     */
    function write($key, $data)
    {
        return $this->write_record($key, $this->packed ? serialize($data) : $data);
        return $this->write_record($key, $this->serialize($data));
    }


@@ -216,7 +216,7 @@
            if ($this->cache_changes[$key]) {
                // Make sure we're not going to write unchanged data
                // by comparing current md5 sum with the sum calculated on DB read
                $data = $this->packed ? serialize($data) : $data;
                $data = $this->serialize($data);

                if (!$this->cache_sums[$key] || $this->cache_sums[$key] != md5($data)) {
                    $this->write_record($key, $data);
@@ -252,7 +252,7 @@

            if ($data) {
                $md5sum = md5($data);
                $data   = $this->packed ? unserialize($data) : $data;
                $data   = $this->unserialize($data);

                if ($nostore) {
                    return $data;
@@ -278,7 +278,7 @@
            if ($sql_arr = $this->db->fetch_assoc($sql_result)) {
                $md5sum = $sql_arr['data'] ? md5($sql_arr['data']) : null;
                if ($sql_arr['data']) {
                    $data = $this->packed ? unserialize($sql_arr['data']) : $sql_arr['data'];
                    $data = $this->unserialize($sql_arr['data']);
                }

                if ($nostore) {
@@ -541,4 +541,28 @@
        // This way each cache will have its own index
        return $this->prefix . 'INDEX';
    }

    /**
     * Serializes data for storing
     */
    private function serialize($data)
    {
        if ($this->type == 'db') {
            return $this->db->encode($data, $this->packed);
        }

        return $this->packed ? serialize($data) : $data;
    }

    /**
     * Unserializes serialized data
     */
    private function unserialize($data)
    {
        if ($this->type == 'db') {
            return $this->db->decode($data, $this->packed);
        }

        return $this->packed ? @unserialize($data) : $data;
    }
}