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<?php
// $Id$
// PostgreSQL specific install functions
/**
* Check if PostgreSQL is available.
*
* @return
* TRUE/FALSE
*/
function pgsql_is_available() {
return function_exists('pg_connect');
}
/**
* Check if we can connect to PostgreSQL.
*
* @return
* TRUE/FALSE
*/
function drupal_test_pgsql($url, &$success) {
if (!pgsql_is_available()) {
drupal_set_message(st('PHP PostgreSQL support not enabled.'), 'error');
return FALSE;
}
$url = parse_url($url);
$conn_string = '';
// Decode url-encoded information in the db connection string
if (isset($url['user'])) {
$conn_string .= ' user='. urldecode($url['user']);
}
if (isset($url['pass'])) {
$conn_string .= ' password='. urldecode($url['pass']);
}
if (isset($url['host'])) {
$conn_string .= ' host='. urldecode($url['host']);
}
if (isset($url['path'])) {
$conn_string .= ' dbname='. substr(urldecode($url['path']), 1);
}
if (isset($url['port'])) {
$conn_string .= ' port='. urldecode($url['port']);
}
// Test connecting to the database.
$connection = @pg_connect($conn_string);
if (!$connection) {
drupal_set_message(st('Failed to connect to your PostgreSQL database server. PostgreSQL reports the following message: %error.<ul><li>Are you sure you have the correct username and password?</li><li>Are you sure that you have typed the correct database hostname?</li><li>Are you sure that the database server is running?</li><li>Are you sure you typed the correct database name?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%error' => 'Connection failed. See log file for failure reason')), 'error');
return FALSE;
}
$success = array('CONNECT');
// Test CREATE.
$query = 'CREATE TABLE drupal_install_test (id integer NOT NULL)';
$result = pg_query($connection, $query);
if ($error = pg_result_error($result)) {
drupal_set_message(st('Failed to create a test table on your PostgreSQL database server with the command %query. PostgreSQL reports the following message: %error.<ul><li>Are you sure the configured username has the necessary PostgreSQL permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error)), 'error');
return FALSE;
}
$err = FALSE;
$success[] = 'SELECT';
$success[] = 'CREATE';
// Test INSERT.
$query = 'INSERT INTO drupal_install_test (id) VALUES (1)';
$result = pg_query($connection, $query);
if ($error = pg_result_error($result)) {
drupal_set_message(st('Failed to insert a value into a test table on your PostgreSQL database server. We tried inserting a value with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
$err = TRUE;
}
else {
$success[] = 'INSERT';
}
// Test UPDATE.
$query = 'UPDATE drupal_install_test SET id = 2';
$result = pg_query($connection, $query);
if ($error = pg_result_error($result)) {
drupal_set_message(st('Failed to update a value in a test table on your PostgreSQL database server. We tried updating a value with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
$err = TRUE;
}
else {
$success[] = 'UPDATE';
}
// Test LOCK.
$query = 'BEGIN; LOCK drupal_install_test IN SHARE ROW EXCLUSIVE MODE';
$result = pg_query($connection, $query);
if ($error = pg_result_error($result)) {
drupal_set_message(st('Failed to lock a test table on your PostgreSQL database server. We tried locking a table with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
$err = TRUE;
}
else {
$success[] = 'LOCK';
}
// Test UNLOCK, which is done automatically upon transaction end in PostgreSQL
$query = 'COMMIT';
$result = pg_query($connection, $query);
if ($error = pg_result_error()) {
drupal_set_message(st('Failed to unlock a test table on your PostgreSQL database server. We tried unlocking a table with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
$err = TRUE;
}
else {
$success[] = 'UNLOCK';
}
// Test DELETE.
$query = 'DELETE FROM drupal_install_test';
$result = pg_query($connection, $query);
if ($error = pg_result_error()) {
drupal_set_message(st('Failed to delete a value from a test table on your PostgreSQL database server. We tried deleting a value with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
$err = TRUE;
}
else {
$success[] = 'DELETE';
}
// Test DROP.
$query = 'DROP TABLE drupal_install_test';
$result = pg_query($connection, $query);
if ($error = pg_result_error()) {
drupal_set_message(st('Failed to drop a test table from your PostgreSQL database server. We tried dropping a table with the command %query and PostgreSQL reported the following error %error.', array('%query' => $query, '%error' => $error)), 'error');
$err = TRUE;
}
else {
$success[] = 'DROP';
}
if ($err) {
return FALSE;
}
pg_close($connection);
return TRUE;
}
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