Codeigniter: Connect to SSL Amazon RDS Database

Question

I'm having trouble making a connection to Amazons RDS service from my Codeigniter application.

Settings in database config:

$db['default']['ssl_set'] = TRUE;
$db['default']['ssl_key'] = NULL;
$db['default']['ssl_cert'] = NULL;
$db['default']['ssl_ca'] = realpath('./application/third_party/mysql-ssl-ca-cert.pem');
$db['default']['ssl_capath'] = NULL;
$db['default']['ssl_cipher'] = NULL;

However, when I connect. I get the message:

Unable to select the specified database: Staging Filename: ...\system\database\DB_driver.php Line Number: 140

Line 40 is shown here:

    // Select the DB... assuming a database name is specified in the config file
    if ($this->database != '')
    {
        if ( ! $this->db_select())
        {
            log_message('error', 'Unable to select database: '.$this->database);

            if ($this->db_debug)
            {
                $this->display_error('db_unable_to_select', $this->database); // LINE 140
            }
            return FALSE;
        }

I made the following changes to get mysqli working with SSL:

I'm suprised it connected successfully as its complaining about database selection. Not sure where to go from here though?

I'm using PHP 5.3.8 on a windows machine.

Update

This is turning more into a bug than a problem with my implementation. If I set the $db['default']['db_debug'] to false. I don't get that problem anymore. However, I get a bunch warnings to do with:

Severity: Warning
Message: mysqli_real_escape_string() [function.mysqli-real-escape-string]: invalid object or resource mysqli
Filename: mysqli/mysqli_driver.php
Line Number: 346

Which means there was an unsuccessful connection to the database over SSL.

Update 2

I am using XAMPP.

And I am using Codeingiter 2.0.2.

Update 3

My database config file:

$db['default']['hostname'] = 'xxxx.us-east-1.rds.amazonaws.com';
$db['default']['username'] = 'xxxxx';
$db['default']['password'] = 'xxxx';
$db['default']['database'] = 'xxxx';
$db['default']['dbdriver'] = 'mysqli';
$db['default']['port'] = 3306;
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = true;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;
$db['default']['ssl_set'] = true; 
$db['default']['ssl_key'] = NULL;
$db['default']['ssl_cert'] = NULL;
$db['default']['ssl_ca'] = realpath('./application/third_party/mysql-ssl-ca-cert.pem');
$db['default']['ssl_capath'] = NULL;
$db['default']['ssl_cipher'] = NULL;

Answer 1

$db['default']['port'] = 3306;

Try adding that to db config. mysql_real_connect() expects param 6 to be a LONG int; balks at empty string.

---

Update

The function below line 140 in DB_Driver is where the dbcollat and charset are set. Those will hit real_escape in the driver, and cause the escape_error if not correct.

Try

$db['default']['dbcollat']='';

Or, check that the encoding your db is set for what you have in your db config. i.e. if your db charset is latin1 and you are using utf-8, the conn_id will be wrong and mysqli_escape will balk.