diff -uprN old/acl.module new/acl.module
--- old/acl.module	2008-03-13 03:18:00.000000000 +0530
+++ new/acl.module	2008-03-18 16:05:49.609375000 +0530
@@ -10,6 +10,10 @@
  * ACLs can easily co-exist with the existing node_access system.
  */
 
+if (module_exists('workflow_ng')) {
+  include_once(drupal_get_path('module', 'acl') .'/acl_workflow_ng.inc');
+}
+
 /**
  * Create a new ACL.
  */
@@ -21,11 +25,25 @@ function acl_create_new_acl($module, $na
 
 /**
  * Delete an existing ACL.
+ *   If TRUE it will write the reduced node grants to the database.
+ *   BEWARE: This may load a large number of nodes, possibly more than
+ *   your web server can take without exhausting memory or timing out;
+ *   this would leave the database in an inconsistent state!
  */
-function acl_delete_acl($acl_id) {
+function acl_delete_acl($acl_id, $write_grants = FALSE) {
   db_query("DELETE FROM {acl} WHERE acl_id = %d", $acl_id);
   db_query("DELETE FROM {acl_user} WHERE acl_id = %d", $acl_id);
+  //Get all the nodes of the ACL gebore it is deleted.
+  if ($write_grants) {
+    $result = db_query("SELECT * FROM {acl_node} WHERE acl_id = %d", $acl_id);
+  }  
   db_query("DELETE FROM {acl_node} WHERE acl_id = %d", $acl_id);
+  if ($write_grants) {
+    while ($data = db_fetch_object($result)) {
+      $node = node_load($data->nid);
+      node_access_acquire_grants($node);
+    }
+  }
 }
 
 /**
@@ -176,15 +194,38 @@ function acl_node_add_acl($nid, $acl_id,
   db_query("INSERT INTO {acl_node} (acl_id, nid, grant_view, grant_update, grant_delete) VALUES (%d, %d, %d, %d, %d)", $acl_id, $nid, $view, $update, $delete);
 }
 
+
+/**
+ * Gets all the ACL(s) a node has.
+ * 
+ * @return 
+ *  Array with the ACL(s) id and grants
+ */
+function acl_node_return_existing_acl($nid) {
+  $existing_acl = array();
+  $result = db_query("SELECT acl_id, grant_view, grant_update, grant_delete FROM {acl_node} WHERE nid = %d", $nid);
+  while ($data = db_fetch_object($result)) {
+    $existing_acl[] = (array)$data;
+  } 
+  return $existing_acl; 
+}
+
+
 /**
  * Remove an ACL completely from a node.
+ * 
+ * @return 
+ *   TRUE if the ACL was removed. 
  */
 function acl_node_remove_acl($nid, $acl_id) {
   db_query("DELETE FROM {acl_node} WHERE acl_id = %d AND nid = %d", $acl_id, $nid);
+  return (boolean)db_affected_rows(); 
 }
 
 /**
  * Clear all of a module's ACL's from a node.
+ * @return 
+ *  TRUE if there were any ACL's deleted from the node. 
  */
 function acl_node_clear_acls($nid, $module) {
   $result = db_query("SELECT acl_id FROM {acl} WHERE module = '%s'", $module);
@@ -194,14 +235,23 @@ function acl_node_clear_acls($nid, $modu
   if ($acls) {
     db_query("DELETE FROM {acl_node} WHERE nid = %d AND acl_id in (%s)", $nid,
       implode(',', $acls));
+    return (boolean)db_affected_rows();   
   }
 }
 
 /**
  * Gets the id of an acl
- */
-function acl_get_id_by_name($module, $name) {
-  return db_result(db_query("SELECT acl_id FROM {acl} WHERE module = '%s' AND name = '%s'", $module, $name));
+ * @param $auto_create
+ *    If TRUE it will create a new acl if an acl not found
+ * @return 
+ *   The acl
+ */
+function acl_get_id_by_name($module, $name, $auto_create = FALSE) {
+  $acl_id = db_result(db_query("SELECT acl_id FROM {acl} WHERE module = '%s' AND name = '%s'", $module, $name));
+  if ($auto_create && !$acl_id) {
+    $acl_id = acl_create_new_acl($module, $name);
+  }
+  return $acl_id;
 }
 
 /**
diff -uprN old/acl_workflow_ng.inc new/acl_workflow_ng.inc
--- old/acl_workflow_ng.inc	1970-01-01 05:30:00.000000000 +0530
+++ new/acl_workflow_ng.inc	2008-03-18 16:00:43.593750000 +0530
@@ -0,0 +1,278 @@
+<?php
+// $Id$
+/**
+ * @file acl_workflow_ng.inc
+ * 
+ * This include file is enabled when Workflow-ng module is enabled. 
+ * It adds some actions that allow adding and removing users and content into arbitrary ACL lists. 
+ * The ACL lists are written in the ACL table as acl_wfng.
+ */
+
+
+/*
+ * Implementation of hook_action_info()
+ */
+function acl_action_info() {
+  return array(
+    'acl_workflow_ng_add_user_to_acl' => array(
+      '#label' => t('Add user to ACL'),
+      '#arguments' => array(
+        'user' => array('#entity' => 'user', '#label' => t('User which will be added to the ACL.')),
+      ),
+      '#module' => 'ACL',
+    ),
+    'acl_workflow_ng_remove_user_from_acl' => array(
+      '#label' => t('Remove user from ACL'),
+      '#arguments' => array(
+        'user' => array('#entity' => 'user', '#label' => t('User which will be removed from the ACL.')),
+      ),
+      '#module' => 'ACL',
+    ),
+    'acl_workflow_ng_add_node_to_acl' => array(
+      '#label' => t('Add content to ACL'),
+      '#arguments' => array(
+        'node' => array('#entity' => 'node', '#label' => t('Content')),
+      ),
+      '#module' => 'ACL',
+    ),
+    'acl_workflow_ng_remove_node_from_acl' => array(
+      '#label' => t('Remove content from ACL'),
+      '#arguments' => array(
+        'node' => array('#entity' => 'node', '#label' => t('Content')),
+      ),
+      '#module' => 'ACL',
+    ),  
+    'acl_workflow_ng_delete_whole_acl' => array(
+      '#label' => t('Delete ACL(s) from content'),
+      '#arguments' => array(
+        'node' => array('#entity' => 'node', '#label' => t('Content')),
+      ),
+      '#module' => 'ACL',
+    ),  
+    'acl_workflow_ng_delete_acl' => array(
+      '#label' => t('Delete ACL'),
+      '#module' => 'ACL',
+    ),     
+  );
+}
+
+
+/*
+ * Action: Add a user to ACL
+ */
+function acl_workflow_ng_add_user_to_acl($user, $settings, &$arguments, &$log) {
+  $token = workflow_ng_token_replace_all(array('acl'), $settings, $arguments, $log);
+  //Make sure ACL exists, or create a new one
+  $acl_id = acl_get_id_by_name('acl_wfng', $token['acl'], TRUE);
+  acl_add_user($acl_id, $user->uid);
+}
+
+/*
+ * Add a user to ACL form
+ *
+ * @ingroup forms
+ * @see acl_workflow_ng_add_user_to_acl_submit
+ *   
+ */
+function acl_workflow_ng_add_user_to_acl_form($settings = array(), $argument_info) {
+  $form = array();
+  $form['acl'] = array(
+    '#type' => 'textfield',
+    '#title' => t('ACL name'),
+    '#description' => t('Enter the name of the ACL. You may have a single user/node assigned to several ACL lists.'),
+    '#default_value' => $settings['acl'],
+    '#required' => TRUE,
+  );
+  workflow_ng_token_replacement_help($form, $argument_info);  
+  return $form;
+}
+
+function acl_workflow_ng_add_user_to_acl_submit($form_id, $form_values) {
+  $token = workflow_ng_token_get_settings(array('acl'), $form_values);
+  $settings =  array('acl' => $form_values['acl']);
+  return $token + $settings;
+}
+
+/*
+ * Action: Remove a user from ACL
+ */
+function acl_workflow_ng_remove_user_from_acl($user, $settings, &$arguments, &$log) {
+  //Make sure ACL exists
+  $token = workflow_ng_token_replace_all(array('acl'), $settings, $arguments, $log);
+  $acl_id = acl_get_id_by_name('acl_wfng', $token['acl'], TRUE);
+  if ($acl_id) {
+    acl_remove_user($acl_id, $user->uid);
+  }
+}
+
+/*
+ * Remove a user from ACL
+ *
+ * @ingroup forms
+ * @see acl_workflow_ng_remove_user_from_acl_submit
+ */
+ 
+function acl_workflow_ng_remove_user_from_acl_form($settings = array(), $argument_info) {
+  $form = array();
+  $form['acl'] = array(
+    '#type' => 'textfield',
+    '#title' => t('ACL name'),
+    '#description' => t('Enter the name of the ACL, which the user will be deleted from.'),
+    '#default_value' => $settings['acl'],
+    '#required' => TRUE,
+  );
+  workflow_ng_token_replacement_help($form, $argument_info);
+  return $form;
+}
+
+function acl_workflow_ng_remove_user_from_acl_submit($form_id, $form_values) {
+  $token = workflow_ng_token_get_settings(array('acl'), $form_values);
+  $settings =  array('acl' => $form_values['acl']);
+  return $token + $settings;
+}
+
+
+/*
+ * Action: Add a node to ACL
+ */
+function acl_workflow_ng_add_node_to_acl($node, $settings, &$arguments, &$log) {
+  //Make sure ACL exists, or create a new one
+  $token = workflow_ng_token_replace_all(array('acl'), $settings, $arguments, $log);
+  $acl_id = acl_get_id_by_name('acl_wfng', $token['acl'], TRUE);
+  acl_node_add_acl($node->nid, $acl_id, (boolean)$settings['access_permissions']['view'], (boolean)$settings['access_permissions']['edit'], (boolean)$settings['access_permissions']['delete']);
+  //Make sure new node access grants are written.
+  return array('node' => $node);  
+}
+
+/*
+ * Add a node to ACL
+ *
+ * @ingroup forms
+ * @see acl_workflow_ng_add_node_to_acl_submit
+ */
+function acl_workflow_ng_add_node_to_acl_form($settings = array(), $argument_info) {
+  $form = array();
+  $form['acl'] = array(
+    '#type' => 'textfield',
+    '#title' => t('ACL name'),
+    '#description' => t('Enter the name of the ACL.'),
+    '#default_value' => $settings['acl'],
+    '#required' => TRUE,
+  );
+  workflow_ng_token_replacement_help($form, $argument_info);
+  $form['access_permissions'] = array(
+    '#type' => 'checkboxes',
+    '#title' => t('Access permissions'),
+    '#description' => t('Select the operations that this ACL will control.'),
+    '#default_value' => $settings['access_permissions'],
+    '#options' => array(
+      'view' => t('View'), 
+      'edit' => t('Edit'), 
+      'delete' => t('Delete'),
+    ),  
+  );  
+  return $form;
+}
+
+function acl_workflow_ng_add_node_to_acl_submit($form_id, $form_values) {
+  $token = workflow_ng_token_get_settings(array('acl'), $form_values);
+  $settings =  array('acl' => $form_values['acl'], 'access_permissions' => $form_values['access_permissions']);
+  return $token + $settings;
+}
+
+/*
+ * Action: Remove a node from ACL
+ */
+function acl_workflow_ng_remove_node_from_acl($node, $settings, &$arguments, &$log) {
+  //Make sure ACL exists
+  $token = workflow_ng_token_replace_all(array('acl'), $settings, $arguments, $log);
+  $acl_id = acl_get_id_by_name('acl_wfng', $token['acl']);
+  if ($acl_id) {
+    $node_exists = acl_node_remove_acl($node->nid, $acl_id);
+    if ($node_exists) {
+      //Make sure new node access grants are written.
+      return array('node' => $node);
+    }
+  }
+}
+
+/*
+ * Remove a node from ACL
+ *
+ * @ingroup forms
+ * @see acl_workflow_ng_remove_node_from_acl_submit
+ */
+function acl_workflow_ng_remove_node_from_acl_form($settings = array(), $argument_info) {
+  $form = array();
+  $form['acl'] = array(
+    '#type' => 'textfield',
+    '#title' => t('ACL name'),
+    '#description' => t('Enter the name of the ACL which the content will be removed from.'),
+    '#default_value' => $settings['acl'],
+    '#required' => TRUE,
+  );
+  workflow_ng_token_replacement_help($form, $argument_info);
+  return $form;
+}
+
+function acl_workflow_ng_remove_node_from_acl_submit($form_id, $form_values) {
+  $token = workflow_ng_token_get_settings(array('acl'), $form_values);
+  $settings =  array('acl' => $form_values['acl']);
+  return $token + $settings;
+}
+
+/*
+ * Action: Delete ACL from node
+ */
+function acl_workflow_ng_delete_whole_acl($node, $settings, &$arguments, &$log) {
+  //Make sure ACL exists
+  $node_exists = acl_node_clear_acls($node->nid, 'acl_wfng');
+  if ($node_exists) {
+    //Make sure new node access grants are written.
+    return array('node' => $node);
+  }
+}
+
+
+/*
+ * Action: Delete ACL
+ */
+function acl_workflow_ng_delete_acl($settings, &$arguments, &$log) {
+  //Make sure ACL exists
+  $token = workflow_ng_token_replace_all(array('acl'), $settings, $arguments, $log);
+  $acl_id = acl_get_id_by_name('acl_wfng', $token['acl']);
+  if ($acl_id) {
+    //ACL will take care of writing the node grants to the database. 
+    acl_delete_acl($acl_id, TRUE);
+  }
+}
+
+/*
+ * Delete ACL
+ *
+ * @ingroup forms
+ * @see acl_workflow_ng_delete_acl_submit
+ */
+function acl_workflow_ng_delete_acl_form($settings = array(), $argument_info) {
+  $form = array();
+  $form['acl'] = array(
+    '#type' => 'textfield',
+    '#title' => t('ACL name'),
+    '#description' => t('Enter the name of the ACL which will be deleted. Note that this action may load a large number of nodes, possibly more than
+      your web server can take without exhausting memory or timing out; this would leave the database in an inconsistent state!'),
+    '#default_value' => $settings['acl'],
+    '#required' => TRUE,
+  );
+  workflow_ng_token_replacement_help($form, $argument_info);
+  return $form;
+}
+
+function acl_workflow_ng_delete_acl_submit($form_id, $form_values) {
+  $token = workflow_ng_token_get_settings(array('acl'), $form_values);
+  $settings =  array('acl' => $form_values['acl']);
+  return $token + $settings;
+}
+
+
+
+