modules/imagepath/imagepath.module

<?php
// $Id: imagepath.module,v 1.1 2008/03/11 16:32:53 noelbush Exp $
/**
 * @file
 * Allows an image in an imagefield to be displayed via a convenient path.
 */

/**
 * Implementation of hook_menu()
 * 
 * Currently this just deals with non-cacheable menu items -- 
 * i.e., image request uris.
 */
function imagepath_menu($may_cache) {
  $items = array();
  if (!$may_cache) {
    $node_type = arg(0);
    $nid = arg(1);
    $field_name = arg(2);

    // Get (possibly create) the info for matching the request URI.
    $domain = variable_get('imagepath_domain', NULL);
    if ($domain == NULL) {
      include_once drupal_get_path('module', 'imagepath') .'/imagepath.inc';
      $domain = _imagepath_update_domain();
    }
  
    if (isset($domain[$node_type]) && is_numeric($nid)) {
      
      // Allow for default field name when appropriate.      
      if (!isset($field_name) && isset($domain[$node_type]['default_field'])) {
        $field_name = $domain[$node_type]['default_field'];
      }
      
      // Now we should have a valid field name, or this path just isn't ours.
      if (isset($field_name)) {
        
        // Check that field name is valid.
        if (!in_array($field_name, $domain[$node_type]['fields'])) {
          drupal_set_message(t('Incorrect field specified.'), 'error');
        } else {
          
          // For the rest we have to look at the actual node.
          $node = node_load($nid);
          
          // Require that URIs name the node type correctly.
          if (!$node || $node->type != $node_type) {
            drupal_set_message(t('Wrong node type specified in request URI.'), 'error');
          } else {
            
            // Check for content in the named field.
            $field = $node->{"field_$field_name"};
            if (count($field) == 0) {
              drupal_set_message(t('Image field has no contents.'), 'error');
            } else {
    
              // Check access, and send the file if access is granted.
              $file = $field[0];
              if (node_access('view', $node)) {
                file_transfer($file['filepath'], array('Content-Type: '. mime_header_encode($file['filemime']), 'Content-Length: '. $file['filesize']));
              } else {
                drupal_access_denied();
              }
            }
          }
        }
      }
    }
  }
  return $items;
}

/**
 * Implementation of hook_node_type()
 * 
 * Update the cached domain info for imagepath
 * whenever a node type has been changed.
 */
function imagepath_node_type($op, $info) {
  include_once drupal_get_path('module', 'imagepath') .'/imagepath.inc';
  _imagepath_update_domain();
}
1	<?php
2	// $Id: imagepath.module,v 1.1 2008/03/11 16:32:53 noelbush Exp $
3	/**
4	* @file
5	* Allows an image in an imagefield to be displayed via a convenient path.
6	*/
7
8	/**
9	* Implementation of hook_menu()
10	*
11	* Currently this just deals with non-cacheable menu items --
12	* i.e., image request uris.
13	*/
14	function imagepath_menu($may_cache) {
15	$items = array();
16	if (!$may_cache) {
17	$node_type = arg(0);
18	$nid = arg(1);
19	$field_name = arg(2);
20
21	// Get (possibly create) the info for matching the request URI.
22	$domain = variable_get('imagepath_domain', NULL);
23	if ($domain == NULL) {
24	include_once drupal_get_path('module', 'imagepath') .'/imagepath.inc';
25	$domain = _imagepath_update_domain();
26	}
27
28	if (isset($domain[$node_type]) && is_numeric($nid)) {
29
30	// Allow for default field name when appropriate.
31	if (!isset($field_name) && isset($domain[$node_type]['default_field'])) {
32	$field_name = $domain[$node_type]['default_field'];
33	}
34
35	// Now we should have a valid field name, or this path just isn't ours.
36	if (isset($field_name)) {
37
38	// Check that field name is valid.
39	if (!in_array($field_name, $domain[$node_type]['fields'])) {
40	drupal_set_message(t('Incorrect field specified.'), 'error');
41	} else {
42
43	// For the rest we have to look at the actual node.
44	$node = node_load($nid);
45
46	// Require that URIs name the node type correctly.
47	if (!$node \|\| $node->type != $node_type) {
48	drupal_set_message(t('Wrong node type specified in request URI.'), 'error');
49	} else {
50
51	// Check for content in the named field.
52	$field = $node->{"field_$field_name"};
53	if (count($field) == 0) {
54	drupal_set_message(t('Image field has no contents.'), 'error');
55	} else {
56
57	// Check access, and send the file if access is granted.
58	$file = $field[0];
59	if (node_access('view', $node)) {
60	file_transfer($file['filepath'], array('Content-Type: '. mime_header_encode($file['filemime']), 'Content-Length: '. $file['filesize']));
61	} else {
62	drupal_access_denied();
63	}
64	}
65	}
66	}
67	}
68	}
69	}
70	return $items;
71	}
72
73	/**
74	* Implementation of hook_node_type()
75	*
76	* Update the cached domain info for imagepath
77	* whenever a node type has been changed.
78	*/
79	function imagepath_node_type($op, $info) {
80	include_once drupal_get_path('module', 'imagepath') .'/imagepath.inc';
81	_imagepath_update_domain();
82	}