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   1  <?php
   2  // $Id: install.pgsql.inc,v 1.2 2006/12/27 13:02:34 drumm Exp $
   3  
   4  // PostgreSQL specific install functions
   5  
   6  /**
   7   * Check if PostgreSQL is available.
   8   *
   9   * @return
  10   *  TRUE/FALSE
  11   */
  12  function pgsql_is_available() {
  13    return function_exists('pg_connect');
  14  }
  15  
  16  /**
  17   * Check if we can connect to PostgreSQL.
  18   *
  19   * @return
  20   *  TRUE/FALSE
  21   */
  22  function drupal_test_pgsql($url, &$success) {
  23    if (!pgsql_is_available()) {
  24      drupal_set_message(st('PHP PostgreSQL support not enabled.'), 'error');
  25      return FALSE;
  26    }
  27  
  28    $url = parse_url($url);
  29  
  30    // Decode url-encoded information in the db connection string.
  31    $url['user'] = urldecode($url['user']);
  32    $url['pass'] = urldecode($url['pass']);
  33    $url['host'] = urldecode($url['host']);
  34    $url['path'] = urldecode($url['path']);
  35  
  36    // Build pgsql connection string and allow for non-standard PostgreSQL port.
  37    $conn_string = ' user='. $url['user'] .' dbname='. substr($url['path'], 1) .' password='. $url['pass'] . ' host=' . $url['host'];
  38    $conn_string .= isset($url['port']) ? ' port=' . $url['port'] : '';
  39  
  40    // Test connecting to the database.
  41    $connection = @pg_connect($conn_string);
  42    if (!$connection) {
  43      drupal_set_message(st('Failure 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');
  44      return FALSE;
  45    }
  46  
  47    $success = array('CONNECT');
  48  
  49    // Test CREATE.
  50    $query = 'CREATE TABLE drupal_install_test (id integer NOT NULL)';
  51    $result = pg_query($connection, $query);
  52    if ($error = pg_result_error($result)) {
  53      drupal_set_message(st('We were unable 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');
  54      return FALSE;
  55    }
  56    $err = FALSE;
  57    $success[] = 'SELECT';
  58    $success[] = 'CREATE';
  59  
  60    // Test INSERT.
  61    $query = 'INSERT INTO drupal_install_test (id) VALUES (1)';
  62    $result = pg_query($connection, $query);
  63    if ($error = pg_result_error($result)) {
  64      drupal_set_message(st('We were unable 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');
  65      $err = TRUE;
  66    }
  67    else {
  68      $success[] = 'INSERT';
  69    }
  70  
  71    // Test UPDATE.
  72    $query = 'UPDATE drupal_install_test SET id = 2';
  73    $result = pg_query($connection, $query);
  74    if ($error = pg_result_error($result)) {
  75      drupal_set_message(st('We were unable 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');
  76      $err = TRUE;
  77    }
  78    else {
  79      $success[] = 'UPDATE';
  80    }
  81  
  82    // Test LOCK.
  83    $query = 'BEGIN; LOCK drupal_install_test IN SHARE ROW EXCLUSIVE MODE';
  84    $result = pg_query($connection, $query);
  85    if ($error = pg_result_error($result)) {
  86      drupal_set_message(st('We were unable 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');
  87      $err = TRUE;
  88    }
  89    else {
  90      $success[] = 'LOCK';
  91    }
  92  
  93    // Test UNLOCK, which is done automatically upon transaction end in PostgreSQL
  94    $query = 'COMMIT';
  95    $result = pg_query($connection, $query);
  96    if ($error = pg_result_error()) {
  97      drupal_set_message(st('We were unable 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');
  98      $err = TRUE;
  99    }
 100    else {
 101      $success[] = 'UNLOCK';
 102    }
 103  
 104    // Test DELETE.
 105    $query = 'DELETE FROM drupal_install_test';
 106    $result = pg_query($connection, $query);
 107    if ($error = pg_result_error()) {
 108      drupal_set_message(st('We were unable 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');
 109      $err = TRUE;
 110    }
 111    else {
 112      $success[] = 'DELETE';
 113    }
 114  
 115    // Test DROP.
 116    $query = 'DROP TABLE drupal_install_test';
 117    $result = pg_query($connection, $query);
 118    if ($error = pg_result_error()) {
 119      drupal_set_message(st('We were unable 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');
 120      $err = TRUE;
 121    }
 122    else {
 123      $success[] = 'DROP';
 124    }
 125  
 126    if ($err) {
 127      return FALSE;
 128    }
 129  
 130    pg_close($connection);
 131    return TRUE;
 132  }
 133  
 134  ?>