Question

I have a function in my class (derived from this function) to generate a secure code and then a test function to update the database and print the code out onto the page. The generator function works fine on a page where it is just functionally programmed and immediately called, but once I put it into my class in CodeIgniter, it doesn’t work.

Here is my generator function:

private function createSecureCode()
{

    // Get 128 pseudorandom bits in a string of 16 bytes
    $pr_bits = '';

    $fp = @fopen('/dev/urandom','rb');
    if ($fp !== false) {
        $pr_bits .= @fread($fp,16);
        @fclose($fp);
    }

    return $pr_bits;

}

Here is my test function:

public function test()
{

$query = $this->db->get("clients");
$result = "";
    foreach($query->result() as $results)
        {

            $code = $this->createSecureCode();
            $result .= $code." - ";
            $this->db->where("client_id", $results->client_id);
            $this->db->update("clients", array("client_secure_code" => $code, "client_active" => 1));


        }

    /*$query = $this->db->get("clients");
    $row = $query->first_row();
    print($row->client_secure_code." - ");*/
    print($result);
    return $result;

}

Answer 1

The problem is the rerouting that Codeigniter will be doing with the index.php

So “$fp = @fopen(‘/dev/urandom’,’rb’);” is failing – because it will be looking in the wrong directory:

/home/public_html/index.php/dev/urandom

But I guess your file is stored:

/home/dev/urandom

So you’ll need to do something like this:

$fp = @fopen('../../dev/urandom','rb')

But you’ll need to test and adjust for your server/setup as needed