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   1  <?php
   2  
   3  define('SIMPLE_PAYPAL_URL_LIVE', 0);
   4  define('SIMPLE_PAYPAL_URL_TEST', 1);
   5  
   6  define('SIMPLE_PAYPAL_URL',      'simple_paypal_url');
   7  define('SIMPLE_PAYPAL_DEFAULT_CURRENCY', 'simple_paypal_default_currency');
   8  
   9  function simple_paypal_get_urls() {
  10    return array(
  11      SIMPLE_PAYPAL_URL_LIVE => 'https://www.paypal.com/cgi-bin/webscr',
  12      SIMPLE_PAYPAL_URL_TEST => 'https://www.sandbox.paypal.com/cgi-bin/webscr',
  13    );
  14  }
  15  
  16  /**
  17   * Implementation of hook_menu().
  18   */
  19  function simple_paypal_menu() {
  20      $items = array();
  21    
  22      $items['admin/settings/paypal'] = array(
  23        'title' => 'Paypal',
  24        'page callback' => 'drupal_get_form',
  25        'page arguments' => array('simple_paypal_admin'),
  26        'description' => 'Administer Paypal',
  27        'access arguments' => array('access administration pages'),
  28        'type' => MENU_NORMAL_ITEM,
  29        );
  30    
  31      return $items;
  32    }
  33  
  34  /**
  35   * Implementation of hook_admin().
  36   */
  37  function simple_paypal_admin() {
  38    $form[SIMPLE_PAYPAL_URL] = array(
  39      '#type'           => 'select',
  40      '#title'          => t('Payment URL for Paypal'),
  41      '#default_value'  => variable_get(SIMPLE_PAYPAL_URL, SIMPLE_PAYPAL_URL_LIVE),
  42      '#options'        => simple_paypal_get_urls(),
  43      '#description' => t('Select whether you want to use a live URL, or a test one.'),
  44    );
  45    $form[SIMPLE_PAYPAL_DEFAULT_CURRENCY] = array(
  46        '#type'          => 'select',
  47        '#title'         => t('Default Currency'),
  48        '#default_value' => variable_get(SIMPLE_PAYPAL_DEFAULT_CURRENCY, 'USD'),
  49        '#options'       => simple_paypal_get_currencies(),
  50        );
  51    return system_settings_form($form);
  52  }
  53  
  54  function simple_paypal_get_url() {
  55    $urls = simple_paypal_get_urls();
  56    return $urls[variable_get(SIMPLE_PAYPAL_URL, SIMPLE_PAYPAL_URL_LIVE)];
  57  }
  58  
  59  function simple_paypal_get_currencies() {
  60    $default_currency = variable_get(SIMPLE_PAYPAL_DEFAULT_CURRENCY, 'USD');
  61    $country_currencies = array(
  62      'AUD' => t('Australian Dollar'),
  63      'GBP' => t('British Pound'),
  64      'CAD' => t('Canadian Dollar'),
  65      'CZK' => t('Czech Koruna'),
  66      'DKK' => t('Danish Kroner'),
  67      'EUR' => t('Euro'),
  68      'HKD' => t('Hong Kong Dollar'),
  69      'HUF' => t('Hungarian Forint'),
  70      'ILS' => t('Israeli New Shekel'),
  71      'JPY' => t('Japanese Yen'),
  72      'MXN' => t('Mexican Peso'),
  73      'NZD' => t('New Zealand Dollar'),
  74      'NOK' => t('Norwegian Kroner'),
  75      'PLN' => t('Polish Zlotych'),
  76      'SGD' => t('Singapore Dollar'),
  77      'SEK' => t('Swedish Kronor'),
  78      'CHF' => t('Swiss Franc'),
  79      'USD' => t('U.S. Dollar'),
  80    );
  81    
  82    if (variable_get(SIMPLE_PAYPAL_DEFAULT_CURRENCY, 'USD')) {
  83      $ordered_currencies[$default_currency] = $country_currencies[$default_currency];
  84      foreach ($country_currencies as $key => $value) {
  85        if($key != $default_currency) {
  86          $ordered_currencies[$key] = $value;
  87        }
  88      }
  89      return $ordered_currencies;
  90    }
  91    return $country_currencies;
  92  }
  93  
  94  function simple_paypal_format_amount($amount, $currency) {
  95    $amount = number_format($amount, 2);
  96    switch ($currency) {
  97      case 'EUR':
  98        return "€ $amount";
  99      case 'GBP':
 100        return "£ $amount";
 101      case 'USD':
 102        return "$ $amount";
 103      default:
 104        return check_plain($currency). " $amount";
 105    }
 106  }
 107  
 108  function simple_paypal_ipn_verify($vars = array()) {
 109    // If we are in test mode, log the variables.
 110    if (SIMPLE_PAYPAL_URL_TEST == variable_get(SIMPLE_PAYPAL_URL, SIMPLE_PAYPAL_URL_TEST)) {
 111      watchdog('simple_paypal', 'Post variables from Paypal IPN <pre>@vars</pre>', array(
 112        '@vars' => print_r($vars, TRUE)), WATCHDOG_DEBUG);
 113    }
 114  
 115    $url = simple_paypal_get_url();
 116    $ch = curl_init();
 117  
 118    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
 119    curl_setopt($ch, CURLOPT_URL, $url);
 120    curl_setopt($ch, CURLOPT_POST, 1);
 121    curl_setopt($ch, CURLOPT_POSTFIELDS, simple_paypal_post($vars));
 122  
 123    ob_start();
 124  
 125    if (curl_exec($ch)) {
 126      $info = ob_get_contents();
 127      curl_close($ch);
 128      ob_end_clean();
 129  
 130      if (eregi('VERIFIED', $info)) {
 131        return TRUE;
 132      }
 133      else {
 134        return FALSE;
 135      }
 136    }
 137    else {
 138      watchdog('simple_paypal', 'Call to curl_exec() failed. url=@url vars=@vars', array(
 139        '@vars' => print_r($vars, TRUE),
 140        '@url'  => $url,
 141        ), WATCHDOG_ERROR);
 142      return FALSE;
 143    }
 144  }
 145  
 146  function simple_paypal_post($data = array()) {
 147    $post = '';
 148    foreach ($data as $key => $value) {
 149      $post .= $key. '='. urlencode($value). '&';
 150    }
 151    $post .= 'cmd=_notify-validate';
 152  
 153    return $post;
 154  }