#!/usr/bin/php -q
<?php
/* SVN FILE: $Id$ */

/**
 * Short description for file.
 *
 * Long description for file
 *
 * PHP versions 4 and 5
 *
 * CakePHP :  Rapid Development Framework <http://www.cakephp.org/>
 * Copyright (c) 2005, Cake Software Foundation, Inc.
 *                     1785 E. Sahara Avenue, Suite 490-204
 *                     Las Vegas, Nevada 89104
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright    Copyright (c) 2005, Cake Software Foundation, Inc.
 * @link         http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
 * @package      cake
 * @subpackage   cake.cake.libs.controller.components.dbacl.models
 * @since        CakePHP v 0.10.0.1232
 * @version      $Revision$
 * @modifiedby   $LastChangedBy$
 * @lastmodified $Date$
 * @license      http://www.opensource.org/licenses/mit-license.php The MIT License
 */
ini_set('display_errors', '1');
ini_set('error_reporting', '7');

/**
 * Enter description here...
 *
 */
define ('DS', DIRECTORY_SEPARATOR);
/**
 * Enter description here...
 *
 */
define ('ROOT', dirname(dirname(dirname(__FILE__))).DS);
/**
 * Enter description here...
 *
 */
define ('APP_DIR', 'app');
/**
 * Enter description here...
 *
 */
define ('DEBUG', 1);

require_once (ROOT.'cake'.DS.'config'.DS.'paths.php');
require_once (CAKE.'basics.php');
require_once (CONFIGS.'core.php');
require_once (CONFIGS.'database.php');

uses ('neat_array');
uses ('object');
uses ('session');
uses ('security');
uses ('model'.DS.'model');
uses ('model'.DS.'dbo'.DS.'dbo_factory');
uses ('controller'.DS.'controller');
uses ('controller'.DS.'components'.DS.'acl');
uses ('controller'.DS.'components'.DS.'dbacl'.DS.'models'.DS.'aclnode');
uses ('controller'.DS.'components'.DS.'dbacl'.DS.'models'.DS.'aco');
uses ('controller'.DS.'components'.DS.'dbacl'.DS.'models'.DS.'acoaction');
uses ('controller'.DS.'components'.DS.'dbacl'.DS.'models'.DS.'aro');

//Get and format args: first arg is the name of the script.
$serverArgs = env('argv');
$wasted = array_shift($serverArgs);
$command = array_shift($serverArgs);
$args = $serverArgs;

$aclCLI = new AclCLI ($command, $args);

class AclCLI {

/**
    * Enter description here...
    *
    * @var unknown_type
    */
   var $stdin;
/**
    * Enter description here...
    *
    * @var unknown_type
    */
   var $stdout;
/**
    * Enter description here...
    *
    * @var unknown_type
    */
   var $stderr;

/**
    * Enter description here...
    *
    * @var unknown_type
    */
   var $acl;
/**
    * Enter description here...
    *
    * @var unknown_type
    */
   var $controller;

/**
    * Enter description here...
    *
    * @var unknown_type
    */
   var $args;

/**
    * Enter description here...
    *
    * @param unknown_type $command
    * @param unknown_type $args
    * @return AclCLI
    */
   function AclCLI($command, $args)
   {
      $this->__construct($command, $args);
   }

/**
    * Enter description here...
    *
    * @param unknown_type $command
    * @param unknown_type $args
    */
   function __construct ($command, $args)
   {
      $acl = new AclComponent();
      $this->acl = $acl->getACL();

      $this->args = $args;

      $this->controller =& new Controller();
      $this->controller->constructClasses();

      $this->stdin = fopen('php://stdin', 'r');
      $this->stdout = fopen('php://stdout', 'w');
      $this->stderr = fopen('php://stderr', 'w');

      //Check to see if DB ACL is enabled
      if (ACL_CLASSNAME != 'DB_ACL')
      {
         $out = "--------------------------------------------------\n";
         $out .= "Error: Your current Cake configuration is set to \n";
         $out .= "an ACL implementation other than DB. Please change \n";
         $out .= "your core config to reflect your decision to use \n";
         $out .= "DB_ACL before attempting to use this script.\n";
         $out .= "--------------------------------------------------\n";
         $out .= "Current ACL Classname: " . ACL_CLASSNAME . "\n";
         $out .= "--------------------------------------------------\n";

         fwrite($this->stderr, $out);
         exit();
      }

      switch ($command)
      {
         case 'create':
            $this->create();
            break;
         case 'delete':
            $this->delete();
            break;
         case 'setParent':
            $this->setParent();
            break;
         case 'getPath':
            $this->getPath();
            break;
         case 'grant':
            $this->grant();
            break;
         case 'deny':
            $this->deny();
            break;
         case 'inherit':
            $this->inherit();
            break;
         case 'view':
            $this->view();
            break;
         case 'initdb':
            $this->initdb();
            break;
         case 'help':
            $this->help();
            break;
         default:
            fwrite($this->stderr, "Unknown ACL command '$command'.\nFor usage, try 'php acl.php help'.\n\n");
      }

   }

/**
    * Enter description here...
    *
    */
   function create()
   {
      $this->checkArgNumber(4, 'create');
      $this->checkNodeType();
      extract($this->__dataVars());
      $node = &new $class;

      $parent = intval($this->args[2]);

      if(!$node->create(intval($this->args[1]), $parent, $this->args[3]))
      {
         $this->displayError("Parent Node Not Found", "There was an error creating the Aro, probably couldn't find the parent node.\n If you wish to create a new root node, specify the parent ID as '0'.");
      }

      fwrite($this->stdout, "New $class '".$this->args[3]."' created.\n\n");
   }

/**
    * Enter description here...
    *
    */
   function delete()
   {
      $this->checkArgNumber(2, 'delete');
      $this->checkNodeType();
      extract($this->__dataVars());
      $node = &new $class;

      //What about children?
      //$node->del($this->args[1]);
      //fwrite($this->stdout, "$class deleted.\n\n");
   }

/**
    * Enter description here...
    *
    */
   function setParent()
   {
      $this->checkArgNumber(3, 'setParent');
      $this->checkNodeType();
      extract($this->__dataVars());
      $node = &new $class;

      if (!$node->setParent(intval($this->args[2]), intval($this->args[1])))
      {
         fwrite($this->stdout, "Error in setting new parent. Please make sure the parent node exists, and is not a descendant of the node specified.\n");
      }
      else
      {
         fwrite($this->stdout, "Node parent set to ".$this->args[2]."\n\n");
      }
   }

/**
    * Enter description here...
    *
    */
   function getPath()
   {
      $this->checkArgNumber(2, 'getPath');
      $this->checkNodeType();
      extract($this->__dataVars());

      $suppliedNode = $this->nodeExists($this->args[0], $this->args[1]);

      if (!$suppliedNode)
      {
         $this->displayError("Supplied Node '".$args[1]."' not found. No tree returned.");
      }

      $node = &new $class;

      $nodes = $node->getPath(intval($this->args[1]));

      for ($i = 0; $i < count($nodes); $i++)
      {
         fwrite($this->stdout, str_repeat('  ', $i) . "[" . $nodes[$i][$class]['id'] . "]" . $nodes[$i][$class]['alias'] . "\n");
      }
   }

/**
    * Enter description here...
    *
    */
   function grant()
   {
      $this->checkArgNumber(3, 'grant');
      //add existence checks for nodes involved


      $this->acl->allow(intval($this->args[0]), intval($this->args[1]), $this->args[2]);
      fwrite($this->stdout, "Permission granted.\n");
   }

/**
    * Enter description here...
    *
    */
   function deny()
   {
      $this->checkArgNumber(3, 'deny');
      //add existence checks for nodes involved

      $this->acl->deny(intval($this->args[0]), intval($this->args[1]), $this->args[2]);
      fwrite($this->stdout, "Requested permission successfully denied.\n");
   }

/**
    * Enter description here...
    *
    */
   function inherit() {}

/**
    * Enter description here...
    *
    */
   function view()
   {
      $this->checkArgNumber(1, 'view');
      $this->checkNodeType();
      extract($this->__dataVars());

      $node = &new $class;
      $nodes = $node->findAll(null, null, 'lft ASC');

      $right = array();

      fwrite($this->stdout, $class . " tree:\n");
      fwrite($this->stdout, "------------------------------------------------\n");

      for($i = 0; $i < count($nodes); $i++)
      {
         if (count($right) > 0)
         {
            while ($right[count($right)-1] < $nodes[$i][$class]['rght'])
            {
               if ($right[count($right)-1])
               {
                  array_pop($right);
               }
               else
               {
                  break;
               }

            }
         }

         fwrite($this->stdout, str_repeat('  ',count($right)) . "[" . $nodes[$i][$class]['id'] . "]" . $nodes[$i][$class]['alias']."\n");
         $right[] = $nodes[$i][$class]['rght'];
      }

      fwrite($this->stdout, "------------------------------------------------\n");
   }

/**
    * Enter description here...
    *
    */
   function initdb()
   {
      fwrite($this->stdout, "Initializing Database...\n");
      fwrite($this->stdout, "Creating access control objects table (acos)...\n");
      $sql = " CREATE TABLE `acos` (
               `id` int(11) NOT NULL auto_increment,
               `object_id` int(11) default NULL,
               `alias` varchar(255) NOT NULL default '',
               `lft` int(11) default NULL,
               `rght` int(11) default NULL,
               PRIMARY KEY  (`id`)
               );";
      $this->controller->db->query($sql);

      fwrite($this->stdout, "Creating access request objects table (acos)...\n");
      $sql2 = "CREATE TABLE `aros` (
               `id` int(11) NOT NULL auto_increment,
               `user_id` int(11) default NULL,
               `alias` varchar(255) NOT NULL default '',
               `lft` int(11) default NULL,
               `rght` int(11) default NULL,
               PRIMARY KEY  (`id`)
               );";
      $this->controller->db->query($sql2);

      fwrite($this->stdout, "Creating relationships table (aros_acos)...\n");
      $sql3 = "CREATE TABLE `aros_acos` (
               `id` int(11) NOT NULL auto_increment,
               `aro_id` int(11) default NULL,
               `aco_id` int(11) default NULL,
               `_create` int(1) NOT NULL default '0',
               `_read` int(1) NOT NULL default '0',
               `_update` int(1) NOT NULL default '0',
               `_delete` int(11) NOT NULL default '0',
               PRIMARY KEY  (`id`)
               );";
      $this->controller->db->query($sql3);

      fwrite($this->stdout, "\nDone.\n");
   }

/**
    * Enter description here...
    *
    */
   function help()
   {
      $out = "Usage: php acl.php <command> <arg1> <arg2>...\n";
      $out .= "-----------------------------------------------\n";
      $out .= "Commands:\n";
      $out .= "\n";

      $out .= "\tcreate aro|aco <link_id> <parent_id> <alias>\n";
      $out .= "\t\tCreates a new ACL object under the parent specified by parent_id (see\n";
      $out .= "\t\t'view'). The link_id allows you to link a current user object to Cake's\n";
      $out .= "\t\tACL structures. The alias parameter allows you address your object\n";
      $out .= "\t\tusing a non-integer ID. Example: \"\$php acl.php create aro 0 jda57 John\"\n";
      $out .= "\t\twould create a new ARO object at the root of the tree, linked to jda57\n";
      $out .= "\t\tin your users table, with an internal alias 'John'.";
      $out .= "\n";
      $out .= "\n";

      $out .= "\tdelete aro|aco <id>\n";
      $out .= "\t\tDeletes the ACL object with the specified ID (see 'view').\n";
      $out .= "\n";
      $out .= "\n";

      $out .= "\tsetParent aro|aco <id> <parent_id>\n";
      $out .= "\t\tUsed to set the parent of the ACL object specified by <id> to the ID\n";
      $out .= "\t\tspecified by <parent_id>.\n";
      $out .= "\n";
      $out .= "\n";

      $out .= "\tgetPath aro|aco <id>\n";
      $out .= "\t\tReturns the path to the ACL object specified by <id>. This command is\n";
      $out .= "\t\tis useful in determining the inhertiance of permissions for a certain\n";
      $out .= "\t\tobject in the tree.\n";
      $out .= "\n";
      $out .= "\n";

      $out .= "\tgrant <aro_id> <aco_id> <aco_action>\n";
      $out .= "\t\tUse this command to grant ACL permissions. Once executed, the ARO\n";
      $out .= "\t\tspecified (and its children, if any) will have ALLOW access to the\n";
      $out .= "\t\tspecified ACO action (and the ACO's children, if any).\n";
      $out .= "\n";
      $out .= "\n";

      $out .= "\tdeny <aro_id> <aco_id> <aco_action>\n";
      $out .= "\t\tUse this command to deny ACL permissions. Once executed, the ARO\n";
      $out .= "\t\tspecified (and its children, if any) will have DENY access to the\n";
      $out .= "\t\tspecified ACO action (and the ACO's children, if any).\n";
      $out .= "\n";
      $out .= "\n";

      $out .= "\tinherit <aro_id> \n";
      $out .= "\t\tUse this command to force a child ARO object to inherit its\n";
      $out .= "\t\tpermissions settings from its parent.\n";
      $out .= "\n";
      $out .= "\n";

      $out .= "\tview aro|aco [id]\n";
      $out .= "\t\tThe view command will return the ARO or ACO tree. The optional\n";
      $out .= "\t\tid/alias parameter allows you to return only a portion of the requested\n";
      $out .= "\t\ttree.\n";
      $out .= "\n";
      $out .= "\n";

      $out .= "\tinitdb\n";
      $out .= "\t\tUse this command to create the database tables needed to use DB ACL.\n";
      $out .= "\n";
      $out .= "\n";

      $out .= "\thelp\n";
      $out .= "\t\tDisplays this help message.\n";
      $out .= "\n";
      $out .= "\n";

      fwrite($this->stdout, $out);
   }

/**
    * Enter description here...
    *
    * @param unknown_type $title
    * @param unknown_type $msg
    */
   function displayError($title, $msg)
   {
      $out = "\n";
      $out .= "Error: $title\n";
      $out .= "$msg\n";
      $out .= "\n";
      fwrite($this->stdout, $out);
      exit();
   }

/**
    * Enter description here...
    *
    * @param unknown_type $expectedNum
    * @param unknown_type $command
    */
   function checkArgNumber($expectedNum, $command)
   {
      if (count($this->args) != $expectedNum)
      {
         $this->displayError('Wrong number of parameters: '.count($this->args), 'Please type \'php acl.php help\' for help on usage of the '.$command.' command.');
      }
   }

/**
    * Enter description here...
    *
    */
   function checkNodeType()
   {
      if ($this->args[0] != 'aco' && $this->args[0] != 'aro')
      {
         $this->displayError("Missing/Unknown node type: '".$this->args[0]."'", 'Please specify which ACL object type you wish to create.');
      }
   }

/**
    * Enter description here...
    *
    * @param unknown_type $type
    * @param unknown_type $id
    * @return unknown
    */
   function nodeExists($type, $id)
   {
      //fwrite($this->stdout, "Check to see if $type with ID = $id exists...\n");
      extract($this->__dataVars($type));
      $node = &new $class;

      $possibility = $node->find('id = ' . $id);

      if (empty($possibility[$class]['id']))
      {
         return false;
      }
      else
      {
         return $possibility;
      }
   }

/**
    * Enter description here...
    *
    * @param unknown_type $type
    * @return unknown
    */
   function __dataVars($type = null)
   {
      if ($type == null)
      {
         $type = $this->args[0];
      }

      $vars = array();
      $class = ucwords($type);
      $vars['secondary_id'] = ($class == 'aro' ? 'user_id' : 'object_id');
      $vars['data_name']    = $type;
      $vars['table_name']   = $class . 's';
      $vars['class']        = $class;
      return $vars;
   }
}
?>