<?php

/**
 * @file
 * UPS shipping quote module.
 */

/******************************************************************************
 * Drupal Hooks                                                               *
 ******************************************************************************/

/**
 * Implements hook_menu().
 */
function uc_ups_menu() {
  $items = array();

  $items['admin/store/settings/quotes/settings/ups'] = array(
    'title' => 'UPS',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('uc_ups_admin_settings'),
    'access arguments' => array('configure quotes'),
    'type' => MENU_LOCAL_TASK,
    'file' => 'uc_ups.admin.inc',
  );
  $items['admin/store/orders/%uc_order/shipments/ups'] = array(
    'title' => 'UPS shipment',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('uc_ups_confirm_shipment', 3),
    'access arguments' => array('fulfill orders'),
    'file' => 'uc_ups.ship.inc',
  );
  $items['admin/store/orders/%uc_order/shipments/labels/ups'] = array(
    'page callback' => 'theme',
    'page arguments' => array('uc_ups_label_image'),
    'access arguments' => array('fulfill orders'),
    'file' => 'uc_ups.ship.inc',
  );

  return $items;
}

/**
 * Implements hook_cron().
 *
 * Deletes UPS shipping labels from the file system automatically
 * on a periodic basis.  Cron must be enabled for automatic deletion.
 * Default is never delete the labels, keep them forever.
 */
function uc_ups_cron() {
  $cutoff = REQUEST_TIME - variable_get('uc_ups_label_lifetime', 0);
  if ($cutoff == REQUEST_TIME) {
    // Label lifetime is set to 0, meaning never delete.
    return;
  }

  // Loop over label files in public://ups_labels and test
  // creation date against 'uc_ups_label_lifetime'.
  $files = file_scan_directory('public://ups_labels', '/^label-/');
  foreach ($files as $file) {
    if ($cutoff > filectime($file->uri)) {
      drupal_unlink($file->uri);
      watchdog('uc_ups', 'Removed uc_ups label file @file.', array('@file' => $file->uri), WATCHDOG_NOTICE);
    }
  }
}

/**
 * Implements hook_theme().
 */
function uc_ups_theme() {
  return array(
    'uc_ups_option_label' => array(
      'variables' => array(
        'service'  => NULL,
        'packages' => NULL,
      ),
      'file' => 'uc_ups.theme.inc',
    ),
    'uc_ups_confirm_shipment' => array(
      'render element' => 'form',
      'file' => 'uc_ups.ship.inc',
    ),
    'uc_ups_label_image' => array(
      'variables' => array(),
      'file' => 'uc_ups.ship.inc',
    ),
  );
}

/**
 * Implements hook_form_alter().
 *
 * Adds package type to products.
 *
 * @see uc_product_form()
 * @see uc_ups_product_alter_validate()
 */
function uc_ups_form_alter(&$form, &$form_state, $form_id) {
  if (uc_product_is_product_form($form)) {
    $node = $form['#node'];

    $enabled = variable_get('uc_quote_enabled', array()) + array('ups' => FALSE);
    $weight = variable_get('uc_quote_method_weight', array()) + array('ups' => 0);

    $ups = array(
      '#type' => 'fieldset',
      '#title' => t('UPS product description'),
      '#collapsible' => TRUE,
      '#collapsed' => ($enabled['ups'] == FALSE || uc_product_get_shipping_type($node) != 'small_package'),
      '#weight' => $weight['ups'],
      '#tree' => TRUE,
    );
    $ups['pkg_type'] = array(
      '#type' => 'select',
      '#title' => t('Package type'),
      '#options' => _uc_ups_pkg_types(),
      '#default_value' => isset($node->ups['pkg_type']) ? $node->ups['pkg_type'] : variable_get('uc_ups_pkg_type', '02'),
    );

    $form['shipping']['ups'] = $ups;
    if ($enabled['ups']) {
      $form['#validate'][] = 'uc_ups_product_alter_validate';
    }
  }
}

/**
 * Validation handler for UPS product fields.
 *
 * @see uc_ups_form_alter()
 */
function uc_ups_product_alter_validate($form, &$form_state) {
  if (isset($form_state['values']['shippable']) && ($form_state['values']['shipping_type'] == 'small_package' || (empty($form_state['values']['shipping_type']) && variable_get('uc_store_shipping_type', 'small_package') == 'small_package'))) {
    if ($form_state['values']['ups']['pkg_type'] == '02' && (empty($form_state['values']['dim_length']) || empty($form_state['values']['dim_width']) || empty($form_state['values']['dim_height']))) {
      form_set_error('base][dimensions', t('Dimensions are required for custom packaging.'));
    }
  }
}

/**
 * Implements hook_node_insert().
 */
function uc_ups_node_insert($node) {
  uc_ups_node_update($node);
}

/**
 * Implements hook_node_update().
 */
function uc_ups_node_update($node) {
  if (uc_product_is_product($node->type)) {
    if (isset($node->ups)) {
      $ups_values = $node->ups;
      if (empty($node->revision)) {
        db_delete('uc_ups_products')
          ->condition('vid', $node->vid)
          ->execute();
      }

      db_insert('uc_ups_products')
        ->fields(array(
          'vid' => $node->vid,
          'nid' => $node->nid,
          'pkg_type' => $ups_values['pkg_type'],
        ))
        ->execute();
    }
  }
}

/**
 * Implements hook_node_load().
 */
function uc_ups_node_load($nodes, $types) {
  $product_types = array_intersect(uc_product_types(), $types);

  if (empty($product_types)) {
    return;
  }

  $vids = array();
  $shipping_type = variable_get('uc_store_shipping_type', 'small_package');
  $shipping_types = db_query("SELECT id, shipping_type FROM {uc_quote_shipping_types} WHERE id_type = :type AND id IN (:ids)", array(':type' => 'product', ':ids' => array_keys($nodes)))->fetchAllKeyed();

  foreach ($nodes as $nid => $node) {
    if (!in_array($node->type, $product_types)) {
      continue;
    }

    if (isset($shipping_types[$nid])) {
      $node->shipping_type = $shipping_types[$nid];
    }
    else {
      $node->shipping_type = $shipping_type;
    }

    if ($node->shipping_type == 'small_package') {
      $vids[$nid] = $node->vid;
    }
  }

  if ($vids) {
    $result = db_query("SELECT * FROM {uc_ups_products} WHERE vid IN (:vids)", array(':vids' => $vids), array('fetch' => PDO::FETCH_ASSOC));
    foreach ($result as $ups) {
      $nodes[$ups['nid']]->ups = $ups;
    }
  }
}

/**
 * Implements hook_node_delete().
 */
function uc_ups_node_delete($node) {
  db_delete('uc_ups_products')
    ->condition('nid', $node->nid)
    ->execute();
}

/**
 * Implements hook_node_revision_delete().
 */
function uc_ups_node_revision_delete($node) {
  db_delete('uc_ups_products')
    ->condition('vid', $node->vid)
    ->execute();
}

/******************************************************************************
 * Ubercart Hooks                                                             *
 ******************************************************************************/

/**
 * Implements hook_uc_shipping_type().
 */
function uc_ups_uc_shipping_type() {
  $weight = variable_get('uc_quote_type_weight', array('small_package' => 0));

  $types = array();
  $types['small_package'] = array(
    'id' => 'small_package',
    'title' => t('Small packages'),
    'weight' => $weight['small_package'],
  );

  return $types;
}

/**
 * Implements hook_uc_shipping_method().
 */
function uc_ups_uc_shipping_method() {
  $methods['ups'] = array(
    'id' => 'ups',
    'module' => 'uc_ups',
    'title' => t('UPS'),
    'operations' => array(
      'configure' => array(
        'title' => t('configure'),
        'href' => 'admin/store/settings/quotes/settings/ups',
      ),
    ),
    'quote' => array(
      'type' => 'small_package',
      'callback' => 'uc_ups_quote',
      'accessorials' => _uc_ups_service_list(),
    ),
    'ship' => array(
      'type' => 'small_package',
      'callback' => 'uc_ups_fulfill_order',
      'file' => 'uc_ups.ship.inc',
      'pkg_types' => _uc_ups_pkg_types(),
    ),
    'cancel' => 'uc_ups_void_shipment',
  );

  return $methods;
}

/**
 * Implements hook_uc_store_status().
 *
 * Lets the administrator know that the UPS account information has not been
 * filled out.
 */
function uc_ups_uc_store_status() {
  $messages = array();

  $access   = variable_get('uc_ups_access_license', '') != '';
  $account  = variable_get('uc_ups_shipper_number', '') != '';
  $user     = variable_get('uc_ups_user_id', '') != '';
  $password = variable_get('uc_ups_password', '') != '';

  if ($access && $account && $user && $password) {
    $messages[] = array(
      'status' => 'ok',
      'title' => t('UPS Online Tools'),
      'desc' => t('Information needed to access UPS Online Tools has been entered.'),
    );
  }
  else {
    $messages[] = array(
      'status' => 'error',
      'title' => t('UPS Online Tools'),
      'desc' => t('More information is needed to access UPS Online Tools. Please enter it <a href="!url">here</a>.', array('!url' => url('admin/store/settings/quotes/settings/ups'))),
    );
  }

  return $messages;
}

/******************************************************************************
 * Module Functions                                                           *
 ******************************************************************************/

/**
 * Returns XML access request to be prepended to all requests to the
 * UPS webservice.
 */
function uc_ups_access_request() {
  $access = variable_get('uc_ups_access_license', '');
  $user = variable_get('uc_ups_user_id', '');
  $password = variable_get('uc_ups_password', '');
  return "<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<AccessRequest xml:lang=\"en-US\">
  <AccessLicenseNumber>$access</AccessLicenseNumber>
  <UserId>$user</UserId>
  <Password>$password</Password>
</AccessRequest>
";
}

/**
 * Constructs an XML quote request.
 *
 * @param $packages
 *   Array of packages received from the cart.
 * @param $origin
 *   Delivery origin address information.
 * @param $destination
 *   Delivery destination address information.
 * @param $ups_service
 *   UPS service code (refers to UPS Ground, Next-Day Air, etc.).
 *
 * @return
 *   RatingServiceSelectionRequest XML document to send to UPS.
 */
function uc_ups_shipping_quote($packages, $origin, $destination, $ups_service) {
  $store['name'] = uc_store_name();
  $store['owner'] = variable_get('uc_store_owner', NULL);
  $store['email'] = uc_store_email();
  $store['email_from'] = uc_store_email();
  $store['phone'] = variable_get('uc_store_phone', NULL);
  $store['fax'] = variable_get('uc_store_fax', NULL);
  $store['street1'] = variable_get('uc_store_street1', NULL);
  $store['street2'] = variable_get('uc_store_street2', NULL);
  $store['city'] = variable_get('uc_store_city', NULL);
  $store['zone'] = variable_get('uc_store_zone', NULL);
  $store['postal_code'] = variable_get('uc_store_postal_code', NULL);
  $store['country'] = variable_get('uc_store_country', 840);

  $account = variable_get('uc_ups_shipper_number', '');
  $ua = explode(' ', $_SERVER['HTTP_USER_AGENT']);
  $user_agent = $ua[0];

  $services = _uc_ups_service_list();
  $service = array('code' => $ups_service, 'description' => $services[$ups_service]);

  $pkg_types = _uc_ups_pkg_types();

  $shipper_zone = uc_get_zone_code($store['zone']);
  $shipper_country = uc_get_country_data(array('country_id' => $store['country']));
  $shipper_country = $shipper_country[0]['country_iso_code_2'];
  $shipper_zip = $store['postal_code'];
  $shipto_zone = uc_get_zone_code($destination->zone);
  $shipto_country = uc_get_country_data(array('country_id' => $destination->country));
  $shipto_country = $shipto_country[0]['country_iso_code_2'];
  $shipto_zip = $destination->postal_code;
  $shipfrom_zone = uc_get_zone_code($origin->zone);
  $shipfrom_country = uc_get_country_data(array('country_id' => $origin->country));
  $shipfrom_country = $shipfrom_country[0]['country_iso_code_2'];
  $shipfrom_zip = $origin->postal_code;

  $ups_units = variable_get('uc_ups_unit_system', variable_get('uc_length_unit', 'in'));
  switch ($ups_units) {
    case 'in':
      $units = 'LBS';
      $unit_name = 'Pounds';
      break;
    case 'cm':
      $units = 'KGS';
      $unit_name = 'Kilograms';
      break;
  }

  $shipment_weight = 0;
  $package_schema = '';
  foreach ($packages as $package) {

    // Determine length conversion factor and weight conversion factor
    // for this shipment.
    $length_factor = uc_length_conversion($package->length_units, variable_get('uc_ups_unit_system', variable_get('uc_length_unit', 'in')));
    switch ($ups_units) {
      case 'in':
        $weight_factor = uc_weight_conversion($package->weight_units, 'lb');
        break;
      case 'cm':
        $weight_factor = uc_weight_conversion($package->weight_units, 'kg');
        break;
    }

    // Loop over quantity of packages in this shipment.
    $qty = $package->qty;
    for ($i = 0; $i < $qty; $i++) {
      // Build XML for this package.
      $package_type = array('code' => $package->pkg_type, 'description' => $pkg_types[$package->pkg_type]);
      $package_schema .= "<Package>";
      $package_schema .=   "<PackagingType>";
      $package_schema .=     "<Code>" . $package_type['code'] . "</Code>";
      $package_schema .=   "</PackagingType>";
      if ($package->pkg_type == '02' && $package->length && $package->width && $package->height) {
        if ($package->length < $package->width) {
          list($package->length, $package->width) = array($package->width, $package->length);
        }
        $package_schema .= "<Dimensions>";
        $package_schema .=   "<UnitOfMeasurement>";
        $package_schema .=     "<Code>" . strtoupper(variable_get('uc_ups_unit_system', variable_get('uc_length_unit', 'in'))) . "</Code>";
        $package_schema .=   "</UnitOfMeasurement>";
        $package_schema .=   "<Length>" . number_format($package->length * $length_factor, 2, '.', '') . "</Length>";
        $package_schema .=   "<Width>" . number_format($package->width * $length_factor, 2, '.', '') . "</Width>";
        $package_schema .=   "<Height>" . number_format($package->height * $length_factor, 2, '.', '') . "</Height>";
        $package_schema .= "</Dimensions>";
      }

      $weight = max(1, $package->weight * $weight_factor);
      $shipment_weight += $weight;
      $package_schema .=   "<PackageWeight>";
      $package_schema .=     "<UnitOfMeasurement>";
      $package_schema .=       "<Code>" . $units . "</Code>";
      $package_schema .=       "<Description>" . $unit_name . "</Description>";
      $package_schema .=     "</UnitOfMeasurement>";
      $package_schema .=     "<Weight>" . number_format($weight, 1, '.', '') . "</Weight>";
      $package_schema .=   "</PackageWeight>";

      $size = $package->length * $length_factor + 2 * $length_factor * ($package->width + $package->height);
      if ($size > 130 && $size <= 165) {
        $package_schema .= "<LargePackageIndicator/>";
      }

      if (variable_get('uc_ups_insurance', TRUE)) {
        $package_schema .= "<PackageServiceOptions>";
        $package_schema .=   "<InsuredValue>";
        $package_schema .=     "<CurrencyCode>" . variable_get('uc_currency_code', 'USD') . "</CurrencyCode>";
        $package_schema .=     "<MonetaryValue>" . $package->price . "</MonetaryValue>";
        $package_schema .=   "</InsuredValue>";
        $package_schema .= "</PackageServiceOptions>";
      }
      $package_schema .= "</Package>";
    }
  }

  $schema = uc_ups_access_request() . "
<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<RatingServiceSelectionRequest xml:lang=\"en-US\">
  <Request>
    <TransactionReference>
      <CustomerContext>Complex Rate Request</CustomerContext>
      <XpciVersion>1.0001</XpciVersion>
    </TransactionReference>
    <RequestAction>Rate</RequestAction>
    <RequestOption>rate</RequestOption>
  </Request>
  <PickupType>
    <Code>" . variable_get('uc_ups_pickup_type', '01') . "</Code>
  </PickupType>
  <CustomerClassification>
    <Code>" . variable_get('uc_ups_classification', '04') . "</Code>
  </CustomerClassification>
  <Shipment>
    <Shipper>
      <ShipperNumber>" . variable_get('uc_ups_shipper_number', '') . "</ShipperNumber>
      <Address>
        <City>" . $store['city'] . "</City>
        <StateProvinceCode>$shipper_zone</StateProvinceCode>
        <PostalCode>$shipper_zip</PostalCode>
        <CountryCode>$shipper_country</CountryCode>
      </Address>
    </Shipper>
    <ShipTo>
      <Address>
        <StateProvinceCode>$shipto_zone</StateProvinceCode>
        <PostalCode>$shipto_zip</PostalCode>
        <CountryCode>$shipto_country</CountryCode>
      ";
      if (variable_get('uc_ups_residential_quotes', 0)) {
        $schema .= "<ResidentialAddressIndicator/>
      ";
      }
      $schema .= "</Address>
    </ShipTo>
    <ShipFrom>
      <Address>
        <StateProvinceCode>$shipfrom_zone</StateProvinceCode>
        <PostalCode>$shipfrom_zip</PostalCode>
        <CountryCode>$shipfrom_country</CountryCode>
      </Address>
    </ShipFrom>
    <ShipmentWeight>
      <UnitOfMeasurement>
        <Code>$units</Code>
        <Description>$unit_name</Description>
      </UnitOfMeasurement>
      <Weight>" . number_format($shipment_weight, 1, '.', '') . "</Weight>
    </ShipmentWeight>
    <Service>
      <Code>{$service['code']}</Code>
      <Description>{$service['description']}</Description>
    </Service>
    ";
    $schema .= $package_schema;
    if (variable_get('uc_ups_negotiated_rates', FALSE)) {
      $schema .= "<RateInformation>
          <NegotiatedRatesIndicator/>
        </RateInformation>";
    }
  $schema .= "</Shipment>
</RatingServiceSelectionRequest>";

  return $schema;
}

/**
 * Callback for retrieving a UPS shipping quote.
 *
 * Requests a quote for each enabled UPS Service. Therefore, the quote will
 * take longer to display to the user for each option the customer has
 * available.
 *
 * @param $products
 *   Array of cart contents.
 * @param $details
 *   Order details other than product information.
 * @param $method
 *   The shipping method to create the quote.
 *
 * @return
 *   JSON object containing rate, error, and debugging information.
 */
function uc_ups_quote($products, $details, $method) {
  // The uc_quote AJAX query can fire before the customer has completely
  // filled out the destination address, so check to see whether the address
  // has all needed fields. If not, abort.
  $destination = (object) $details;
  if (empty($destination->zone)        ||
      empty($destination->postal_code) ||
      empty($destination->country)       ) {
    // Skip this shipping method.
    return array();
  }

  $quotes = array();

  $addresses = array(variable_get('uc_quote_store_default_address', new UcAddress()));
  $key = 0;
  $last_key = 0;
  $packages = array();
  if (variable_get('uc_ups_all_in_one', TRUE) && count($products) > 1) {
    foreach ($products as $product) {
      if ($product->nid) {
        // Packages are grouped by the address from which they will be
        // shipped. We will keep track of the different addresses in an array
        // and use their keys for the array of packages.

        $key = NULL;
        $address = uc_quote_get_default_shipping_address($product->nid);
        foreach ($addresses as $index => $value) {
          if ($address->isSamePhysicalLocation($value)) {
            // This is an existing address.
            $key = $index;
            break;
          }
        }

        if (!isset($key)) {
          // This is a new address. Increment the address counter $last_key
          // instead of using [] so that it can be used in $packages and
          // $addresses.
          $addresses[++$last_key] = $address;
          $key = $last_key;
        }
      }

      // Add this product to the last package from the found address or start
      // a new package.
      if (isset($packages[$key]) && count($packages[$key])) {
        $package = array_pop($packages[$key]);
      }
      else {
        $package = _uc_ups_new_package();
      }

      // Grab some product properties directly from the (cached) product
      // data. They are not normally available here because the $product
      // object is being read out of the $order object rather than from
      // the database, and the $order object only carries around a limited
      // number of product properties.
      $temp = node_load($product->nid);
      $product->length = $temp->length;
      $product->width = $temp->width;
      $product->height = $temp->height;
      $product->length_units = $temp->length_units;
      $product->ups['pkg_type'] = isset($temp->ups) ? $temp->ups['pkg_type'] : '02';

      $weight = $product->weight * $product->qty * uc_weight_conversion($product->weight_units, 'lb');

      $package->weight += $weight;
      $package->price += $product->price * $product->qty;

      $length_factor = uc_length_conversion($product->length_units, 'in');
      $package->length = max($product->length * $length_factor, $package->length);
      $package->width = max($product->width * $length_factor, $package->width);
      $package->height = max($product->height * $length_factor, $package->height);

      $packages[$key][] = $package;
    }
    foreach ($packages as $addr_key => $shipment) {
      foreach ($shipment as $key => $package) {
        if (!$package->weight) {
          unset($packages[$addr_key][$key]);
          continue;
        }
        elseif ($package->weight > 150) {
          // UPS has a weight limit on packages of 150 lbs. Pretend the
          // products can be divided into enough packages.
          $qty = floor($package->weight / 150) + 1;
          $package->qty = $qty;
          $package->weight /= $qty;
          $package->price /= $qty;
        }
      }
    }
  }
  else {
    foreach ($products as $product) {
      $key = 0;
      if ($product->nid) {
        $address = uc_quote_get_default_shipping_address($product->nid);
        if (in_array($address, $addresses)) {
          // This is an existing address.
          foreach ($addresses as $index => $value) {
            if ($address == $value) {
              $key = $index;
              break;
            }
          }
        }
        else {
          // This is a new address.
          $addresses[++$last_key] = $address;
          $key = $last_key;
        }
      }
      if (!isset($product->pkg_qty) || !$product->pkg_qty) {
        $product->pkg_qty = 1;
      }
      $num_of_pkgs = (int)($product->qty / $product->pkg_qty);

      // Grab some product properties directly from the (cached) product
      // data.  They are not normally available here because the $product
      // object is being read out of the $order object rather than from
      // the database, and the $order object only carries around a limited
      // number of product properties.
      $temp = node_load($product->nid);
      $product->length = $temp->length;
      $product->width = $temp->width;
      $product->height = $temp->height;
      $product->length_units = $temp->length_units;
      $product->ups['pkg_type'] = isset($temp->ups) ? $temp->ups['pkg_type'] : '02';

      if ($num_of_pkgs) {
        $package = clone $product;
        $package->description = $product->model;
        $package->weight = $product->weight * $product->pkg_qty;
        $package->price = $product->price * $product->pkg_qty;
        $package->qty = $num_of_pkgs;
        $package->pkg_type = $product->ups['pkg_type'];
        if ($package->weight) {
          $packages[$key][] = $package;
        }
      }
      $remaining_qty = $product->qty % $product->pkg_qty;
      if ($remaining_qty) {
        $package = clone $product;
        $package->description = $product->model;
        $package->weight = $product->weight * $remaining_qty;
        $package->price = $product->price * $remaining_qty;
        $package->qty = 1;
        $package->pkg_type = $product->ups['pkg_type'];
        if ($package->weight) {
          $packages[$key][] = $package;
        }
      }
    }
  }
  if (!count($packages)) {
    return array();
  }

  $dest = (object)$details;

  foreach ($packages as $key => $ship_packages) {
    $orig = $addresses[$key];
    $orig->email = uc_store_email();
    foreach (array_keys(array_filter(variable_get('uc_ups_services', array()))) as $ups_service) {
      $request = uc_ups_shipping_quote($ship_packages, $orig, $dest, $ups_service);
      $resp = drupal_http_request(variable_get('uc_ups_connection_address', 'https://wwwcie.ups.com/ups.app/xml/') . 'Rate', array(
        'method' => 'POST',
        'data' => $request,
      ));
      if (user_access('configure quotes') && variable_get('uc_quote_display_debug', FALSE)) {
        if (!isset($debug_data[$ups_service]['debug'])) {
          $debug_data[$ups_service]['debug'] = '';
        }
        $debug_data[$ups_service]['debug'] .= htmlentities($request) . ' <br /><br /> ' . htmlentities($resp->data);
      }
      $response = new SimpleXMLElement($resp->data);
      if (isset($response->Response->Error)) {
        foreach ($response->Response->Error as $error) {
          if (user_access('configure quotes') && variable_get('uc_quote_display_debug', FALSE)) {
            $debug_data[$ups_service]['error'][] = (string)$error->ErrorSeverity . ' ' . (string)$error->ErrorCode . ': ' . (string)$error->ErrorDescription;
          }
          if (strpos((string)$error->ErrorSeverity, 'Hard') !== FALSE) {
            // All or nothing quote. If some products can't be shipped by
            // a certain service, no quote is given for that service. If
            // that means no quotes are given at all, they'd better call in.
            unset($quotes[$ups_service]['rate']);
          }
        }
      }
      // If NegotiatedRates exist, quote based on those, otherwise, use
      // TotalCharges.
      if (isset($response->RatedShipment)) {
        $charge = $response->RatedShipment->TotalCharges;
        if (isset($response->RatedShipment->NegotiatedRates)) {
          $charge = $response->RatedShipment->NegotiatedRates->NetSummaryCharges->GrandTotal;
        }
        if (!isset($charge->CurrencyCode) || (string)$charge->CurrencyCode == variable_get('uc_currency_code', "USD")) {
          // Markup rate before customer sees it.
          if (!isset($quotes[$ups_service]['rate'])) {
            $quotes[$ups_service]['rate'] = 0;
          }
          $rate = uc_ups_rate_markup((string)$charge->MonetaryValue);
          $quotes[$ups_service]['rate'] += $rate;
        }
      }
    }
  }
  // Sort quotes by price, lowest to highest.
  uasort($quotes, 'uc_quote_price_sort');

  foreach ($quotes as $key => $quote) {
    if (isset($quote['rate'])) {
      $quotes[$key]['rate'] = $quote['rate'];
      $quotes[$key]['label'] = $method['quote']['accessorials'][$key];
      $quotes[$key]['option_label'] = theme('uc_ups_option_label', array('service' => $method['quote']['accessorials'][$key], 'packages' => $packages));
    }
  }

  // Merge debug data into $quotes.  This is necessary because
  // $debug_data is not sortable by a 'rate' key, so it has to be
  // kept separate from the $quotes data until this point.
  if (isset($debug_data)) {
    foreach ($debug_data as $key => $data) {
      if (isset($quotes[$key])) {
        // This is debug data for successful quotes.
        $quotes[$key]['debug'] = $debug_data[$key]['debug'];
        if (isset($debug_data[$key]['error'])) {
          $quotes[$key]['error'] = $debug_data[$key]['error'];
        }
      }
      else {
        // This is debug data for quotes that returned error responses from UPS.
        $quotes[$key] = $debug_data[$key];
      }
    }
  }

  /**
   * Ugly hack to work around PHP bug, details here:
   *   http://bugs.php.net/bug.php?id=23220
   * We strip out errors that look something like:
   *  warning: fread() [function.fread]: SSL fatal protocol error in...
   * Copied from http://drupal.org/node/70915 and then improved by Lyle.
   */
  $messages = drupal_set_message();
  if (isset($messages['error'])) {
    $errors = $messages['error'];
    $total = count($errors);
    for ($i = 0; $i < $total; $i++) {
      if (strpos($errors[$i], 'SSL: fatal protocol error in')) {
        unset($_SESSION['messages']['error'][$i]);
      }
    }
    if (empty($_SESSION['messages']['error'])) {
      unset($_SESSION['messages']['error']);
    }
  }

  db_delete('watchdog')
    ->condition('type', 'php')
    ->condition('variables', '%SSL: fatal protocol error%', 'LIKE')
    ->execute();
  // End of ugly hack.

  return $quotes;
}

/**
 * Constructs a void shipment request.
 *
 * @param $shipment_number
 *   The UPS shipment tracking number.
 * @param $tracking_numbers
 *   Array of tracking numbers for individual packages in the shipment.
 *   Optional for shipments of only one package, as they have the same tracking
 *   number.
 *
 * @return
 *   XML VoidShipmentRequest message.
 */
function uc_ups_void_shipment_request($shipment_number, $tracking_numbers = array()) {
  $schema = uc_ups_access_request();
  $schema .= '<?xml version="1.0"?>';
  $schema .= '<VoidShipmentRequest>';
  $schema .= '<Request>';
    $schema .= '<RequestAction>Void</RequestAction>';
    $schema .= '<TransactionReference>';
      $schema .= '<CustomerContext>';
      $schema .= t('Void shipment @ship_number and tracking numbers @track_list', array('@ship_number' => $shipment_number, '@track_list' => implode(', ', $tracking_numbers)));
      $schema .= '</CustomerContext>';
      $schema .= '<XpciVersion>1.0</XpciVersion>';
    $schema .= '</TransactionReference>';
  $schema .= '</Request>';
  $schema .= '<ExpandedVoidShipment>';
    $schema .= '<ShipmentIdentificationNumber>' . $shipment_number . '</ShipmentIdentificationNumber>';
    foreach ($tracking_numbers as $number) {
      $schema .= '<TrackingNumber>' . $number . '</TrackingNumber>';
    }
  $schema .= '</ExpandedVoidShipment>';
  $schema .= '</VoidShipmentRequest>';
  return $schema;
}

/**
 * Instructs UPS to cancel (in whole or in part) a shipment.
 *
 * @param $shipment_number
 *   The UPS shipment tracking number.
 * @param $tracking_numbers
 *   Array of tracking numbers for individual packages in the shipment.
 *   Optional for shipments of only one package, as they have the same tracking
 *   number.
 *
 * @return
 *   TRUE if the shipment or packages were successfully voided.
 */
function uc_ups_void_shipment($shipment_number, $tracking_numbers = array()) {
  $success = FALSE;
  $request = uc_ups_void_shipment_request($shipment_number, $tracking_numbers);
  $resp = drupal_http_request(variable_get('uc_ups_connection_address', 'https://wwwcie.ups.com/ups.app/xml/') . 'Void', array(
    'method' => 'POST',
    'data' => $request,
  ));
  $response = new SimpleXMLElement($resp->data);
  if (isset($response->Response)) {
    if (isset($response->Response->ResponseStatusCode)) {
      $success = (string)$response->Response->ResponseStatusCode;
    }
    if (isset($response->Response->Error)) {
      foreach ($response->Response->Error as $error) {
        drupal_set_message((string)$error->ErrorSeverity . ' ' . (string)$error->ErrorCode . ': ' . (string)$error->ErrorDescription, 'error');
      }
    }
  }
  if (isset($response->Status)) {
    if (isset($response->Status->StatusType)) {
      $success = (string)$response->Status->StatusType->Code;
    }
  }
  return (bool)$success;
}

/**
 * Modifies the rate received from UPS before displaying to the customer.
 *
 * @param $rate
 *   Shipping rate without any rate markup.
 *
 * @return
 *   Shipping rate after markup.
 */
function uc_ups_rate_markup($rate) {
  $markup = trim(variable_get('uc_ups_rate_markup', '0'));
  $type   = variable_get('uc_ups_rate_markup_type', 'percentage');

  if (is_numeric($markup)) {
    switch ($type) {
      case 'percentage':
        return $rate + $rate * floatval($markup) / 100;
      case 'multiplier':
        return $rate * floatval($markup);
      case 'currency':
        return $rate + floatval($markup);
    }
  }
  else {
    return $rate;
  }
}

/**
 * Modifies the weight of shipment before sending to UPS for a quote.
 *
 * @param $weight
 *   Shipping weight without any weight markup.
 *
 * @return
 *   Shipping weight after markup.
 */
function uc_ups_weight_markup($weight) {
  $markup = trim(variable_get('uc_ups_weight_markup', '0'));
  $type   = variable_get('uc_ups_weight_markup_type', 'percentage');

  if (is_numeric($markup)) {
    switch ($type) {
      case 'percentage':
        return $weight + $weight * floatval($markup) / 100;

      case 'multiplier':
        return $weight * floatval($markup);

      case 'mass':
        return $weight + floatval($markup);
    }
  }
  else {
    return $weight;
  }
}

/**
 * Convenience function to get UPS codes for their services.
 */
function _uc_ups_service_list() {
  return array(
    // Domestic services.
    '03' => t('UPS Ground'),
    '01' => t('UPS Next Day Air'),
    '13' => t('UPS Next Day Air Saver'),
    '14' => t('UPS Next Day Early A.M.'),
    '02' => t('UPS 2nd Day Air'),
    '59' => t('UPS 2nd Day Air A.M.'),
    '12' => t('UPS 3 Day Select'),
    // International services.
    '11' => t('UPS Standard'),
    '07' => t('UPS Worldwide Express'),
    '08' => t('UPS Worldwide Expedited'),
    '54' => t('UPS Worldwide Express Plus'),
    '65' => t('UPS Worldwide Saver'),
    // Poland to Poland shipments only.
    //'82' => t('UPS Today Standard'),
    //'83' => t('UPS Today Dedicated Courrier'),
    //'84' => t('UPS Today Intercity'),
    //'85' => t('UPS Today Express'),
    //'86' => t('UPS Today Express Saver'),
  );
}

/**
 * Convenience function to get UPS codes for their package types.
 */
function _uc_ups_pkg_types() {
  return array(
    // Customer Supplied Page is first so it will be the default.
    '02' => t('Customer Supplied Package'),
    '01' => t('UPS Letter'),
    '03' => t('Tube'),
    '04' => t('PAK'),
    '21' => t('UPS Express Box'),
    '24' => t('UPS 25KG Box'),
    '25' => t('UPS 10KG Box'),
    '30' => t('Pallet'),
    '2a' => t('Small Express Box'),
    '2b' => t('Medium Express Box'),
    '2c' => t('Large Express Box'),
  );
}

/**
 * Pseudo-constructor to set default values of a package.
 */
function _uc_ups_new_package() {
  $package = new stdClass();

  $package->weight = 0;
  $package->price = 0;

  $package->length = 0;
  $package->width = 0;
  $package->height = 0;

  $package->length_units = 'in';
  $package->weight_units = 'lb';
  $package->qty = 1;
  $package->pkg_type = '02';

  return $package;
}