? modules/audio/getid3
Index: modules/audio/audio.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/audio/audio.module,v
retrieving revision 1.51
diff -u -u -F^f -r1.51 audio.module
--- modules/audio/audio.module	21 Apr 2006 21:46:10 -0000	1.51
+++ modules/audio/audio.module	10 May 2006 21:41:31 -0000
@@ -130,7 +130,8 @@ function audio_node_info() {
  * Implementation of hook_perm
  */
 function audio_perm() {
-  return array('administer audio', 'create audio');
+  return array('administer audio', 'create audio',
+               'play audio files', 'download audio files');
 }
 
 /**
@@ -179,13 +180,14 @@ function audio_link($type, $node, $main 
   $links = array();
 
   if ($type == 'node' && $node->type == 'audio') {
-    if ($node->url_download) {
+    if ($node->url_download &&
+        audio_file_access($node, 'download')) {
       $links[] = l(t('download audio file'), $node->url_download, NULL);
       $links[] = t('%download_count downloads', array('%download_count' => $node->audio_fileinfo['download_count']));
     }
     $links[] = t('%play_count plays', array('%play_count' => $node->audio_fileinfo['play_count']));
   }
-
+  
   return $links;
 }
 
@@ -342,6 +344,9 @@ function audio_insert(&$node) {
 
   // add the tags records
   _audio_save_tags_to_db($node);
+
+  // notify other modules
+  audio_invoke_fileapi($node, 'insert', $f);
 }
 
 /**
@@ -385,6 +390,9 @@ function audio_insert_revision($node) {
 
   // add the tags records
   _audio_save_tags_to_db($node);
+
+  // notify other modules
+  audio_invoke_fileapi($node, 'insert', $f);
 }
 
 /**
@@ -437,6 +445,9 @@ function audio_update(&$node) {
 
   // add the tags records
   _audio_save_tags_to_db($node);
+
+  // notify other modules
+  audio_invoke_fileapi($node, 'update', $node->audio_file);
 }
 
 /**
@@ -453,6 +464,9 @@ function audio_delete($node) {
     db_query('DELETE FROM {audio_file} WHERE vid = %d', $o->vid);
   }
   db_query('DELETE FROM {audio} WHERE nid = %d', $node->nid);
+
+  // notify other modules
+  audio_invoke_fileapi($node, 'delete', $node->audio_file);
 }
 
 /**
@@ -465,6 +479,9 @@ function audio_delete_revision($node) {
   db_query('DELETE FROM {audio_metadata} WHERE vid = %d', $node->vid);
   db_query('DELETE FROM {audio_file} WHERE vid = %d', $node->vid);
   db_query('DELETE FROM {audio} WHERE vid = %d', $node->vid);
+
+  // notify other modules
+  audio_invoke_fileapi($node, 'delete', $node->audio_file);
 }
 
 /**
@@ -1126,7 +1143,8 @@ function audio_get_latest($count = 1) {
  */
 function audio_get_player($node) {
   // if we've got a URL, setup a player
-  if (isset($node->url_play)) {
+  if (isset($node->url_play) &&
+      audio_file_access($node, 'view')) {
     // try to find one that's type specific...
     $format = $node->audio_fileinfo['fileformat'];
     if (!$player = theme('audio_'. $format .'_player', $node)) {
@@ -1523,3 +1541,52 @@ function audio_get_max_upload_size() {
   // the smallest value will be the limiting factor so retun it.
   return min($limits);
 }
+
+
+
+/**
+ * Helper function to notify other module via fileapis.
+ */
+function audio_invoke_fileapi($node, $op, $info) {
+  // Invoke ecommerce fileapi.  Allows audio nodes to be products.
+  module_invoke_all('ec_fileapi', 
+					$node->vid, 'audio.module', $node, $op, $info);
+}
+
+/**
+ * hook_ec_file_nodetypes
+ * 
+ * Enables the ecommerce modules to treat audio nodes as file products.
+ * 
+ * @return
+ *   An array in which keys are nodetypes and values are configuration arrays.
+ */
+function audio_ec_file_nodetypes() {
+  return array('audio' => array('realm' => 'audio.module'));
+}
+
+/**
+ * Is the current user allowed to see the audio file?
+ * 
+ * @param $node
+ * @param $op
+ *   operations include 'view' and 'download'  (to audio, 'view' means 'play')
+ */
+function audio_file_access($node, $op) {
+  global $user;
+  $perms = array('view' => 'play audio files',
+                 'download'  => 'download audio files');
+  if ($perms[$op] &&
+      user_access($perms[$op])) {
+    // explicit permission based on role
+    return TRUE;
+  }
+  
+  // Otherwise, let other modules determine whether file is downloadable.
+  $result = module_invoke_all('ec_file_access', // ecommerce hook
+                              $node->vid, 'audio.module', $node, $op, 
+                              $node->audio_file, $user);
+  if (in_array(TRUE, $result)) {
+    return TRUE;
+  }
+}