class_forums.php

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<?php
/*
+--------------------------------------------------------------------------
|   Invision Power Board v2.1.5
|   =============================================
|   by Matthew Mecham
|   (c) 2001 - 2005 Invision Power Services, Inc.
|   
|   =============================================
|   Web: 
|   Time: Wed, 01 Mar 2006 19:11:28 GMT
|   Release: 
|   Licence Info: 
+---------------------------------------------------------------------------
|   > $Date: 2005-12-01 16:45:12 +0000 (Thu, 01 Dec 2005) $
|   > $Revision: 88 $
|   > $Author: bfarber $
+---------------------------------------------------------------------------
|
|   > FORUMS CLASS
|   > Module written by Matt Mecham
|   > Date started: 26th January 2004
|
|	> Module Version Number: 1.0.0
|   > DBA Checked: Wed 19 May 2004
+--------------------------------------------------------------------------
*/

class forum_functions
{

	var $forum_cache   = array();
	var $forum_by_id   = array();
	var $forum_built   = array();
	
	var $template_bit  = "";
	var $depth_guide   = "--";
	var $return        = "";
	var $this_forum    = array();
	var $strip_invisible = 0;
	var $mod_cache     = array();
	var $mod_cache_got = 0;
	var $read_topic_only = 0;
	
	/*-------------------------------------------------------------------------*/
	// register_class
	// ------------------
	// Register a $this-> class with this module
	/*-------------------------------------------------------------------------*/
	
	function register_class()
	{
		//NO LONGER NEEDED
	}
	
	
	/*-------------------------------------------------------------------------*/
	// forums_init
	// ------------------
	// Grab all forums and stuff into array
	/*-------------------------------------------------------------------------*/
	
	function forums_init()
	{
		if ( ! is_array( $this->ipsclass->cache['forum_cache'] ) )
		{
			$this->ipsclass->update_forum_cache();
		}
		
		$hide_parents = ',';
		
		$this->forum_cache = array();
		$this->forum_by_id = array();
		
		foreach( $this->ipsclass->cache['forum_cache'] as $i => $f )
		{
			if ( $this->strip_invisible )
			{
				if ( strstr( $hide_parents, ','. $f['parent_id'] .',' ) )
				{
					// Don't show any children of hidden parents
					$hide_parents .= $f['id'].',';
					continue;
				}
				
				//if ( $f['status'] < 1 )
				//{
				//	$hide_parents .= $f['id'].',';
				//	continue;
				//}
				
				if ( $f['show_perms'] != '*' )
				{ 
					if ( $this->ipsclass->check_perms($f['show_perms']) != TRUE )
					{
						$hide_parents .= $f['id'].',';
						continue;
					}
				}
			}
			
			if ( $f['parent_id'] < 1 )
			{
				$f['parent_id'] = 'root';
			}
			
			$f['fid'] = $f['id'];
			
			$this->forum_cache[ $f['parent_id'] ][ $f['id'] ] = $f;
			$this->forum_by_id[ $f['id'] ] = &$this->forum_cache[ $f['parent_id'] ][ $f['id'] ];
		}
		
	}
	
	
	function forums_remove_childless_parents()
	{
		foreach ( $this->forum_cache['root'] as $id => $forum_data )
		{
			if ( ! is_array( $this->forum_cache['root'][ $forum_data['id'] ] ) )
			{
				unset( $this->forum_cache['root'][ $forum_data['id'] ] );
				unset( $this->forum_by_id[ $forum_data['id'] ] );
			}
		}
	}
	
	/*-------------------------------------------------------------------------*/
	// forums_get_moderator_cache
	// ------------------
	// Grab all mods innit
	/*-------------------------------------------------------------------------*/
	
	function forums_get_moderator_cache()
	{
		$this->can_see_queued = array();
		
		if ( ! is_array( $this->ipsclass->cache['moderators'] ) )
		{
			$this->ipsclass->cache['moderators'] = array();
			
			define( "IN_ACP", 1 );
			
			require_once( ROOT_PATH.'sources/action_admin/moderator.php' );
			$this->mod           =  new ad_moderator();
			$this->mod->ipsclass =& $this->ipsclass;
			
			$this->mod->rebuild_moderator_cache();
		}
		
		if ( count($this->ipsclass->cache['moderators']) )
		{
			foreach( $this->ipsclass->cache['moderators'] as $i => $r )
			{
				$this->mod_cache[ $r['forum_id'] ][ $r['mid'] ] = array( 'name'  => $r['members_display_name'],
																		 'memid' => $r['member_id'],
																		 'id'    => $r['mid'],
																		 'isg'   => $r['is_group'],
																		 'gname' => $r['group_name'],
																		 'gid'   => $r['group_id'],
																	   );
			}
		}
		
		$this->mod_cache_got = 1;
	}
	
	
	/*-------------------------------------------------------------------------*/
	// forums_get_moderators
	// ------------------
	// Grab all mods innit
	/*-------------------------------------------------------------------------*/
	
	function forums_get_moderators($forum_id="")
	{
		if ( ! $this->mod_cache_got )
		{
			$this->forums_get_moderator_cache();
		}
		
		$mod_string = "";
		
		if ($forum_id == "")
		{
			return "";
		}
		
		if (isset($this->mod_cache[ $forum_id ] ) )
		{
			$mod_string = $this->ipsclass->lang['forum_leader'].' ';
			
			if (is_array($this->mod_cache[ $forum_id ]) )
			{
				foreach ($this->mod_cache[ $forum_id ] as $moderator)
				{
					if ($moderator['isg'] == 1)
					{
						$mod_string .= "<a href='{$this->ipsclass->base_url}act=Members&amp;max_results=30&amp;filter={$moderator['gid']}&amp;sort_order=asc&amp;sort_key=members_display_name&amp;st=0&amp;b=1'>{$moderator['gname']}</a>, ";
					}
					else
					{
						if ( ! $moderator['name'] )
						{
							continue;
						}
						
						$mod_string .= "<a href='{$this->ipsclass->base_url}showuser={$moderator['memid']}'>{$moderator['name']}</a>, ";
					}
				}
				
				$mod_string = preg_replace( "!,\s+$!", "", $mod_string );
				
			}
			else
			{
				if ($moderator['isg'] == 1)
				{
					$mod_string .= "<a href='{$this->ipsclass->base_url}act=Members&amp;max_results=30&amp;filter={$this->mods[$forum_id]['gid']}&amp;sort_order=asc&amp;sort_key=name&amp;st=0&amp;b=1'>{$this->mods[$forum_id]['gname']}</a>, ";
				}
				else
				{
					$mod_string .= "<a href='{$this->ipsclass->base_url}showuser={$this->mods[$forum_id]['memid']}'>{$this->mods[$forum_id]['name']}</a>";
				}
			}
		}
		
		return $mod_string;
		
	}
	
	/*-------------------------------------------------------------------------*/
	// Forums check access
	// ------------------
	// Blah-de-blah
	/*-------------------------------------------------------------------------*/
	
	function forums_check_access($fid, $prompt_login=0, $in='forum')
	{
		$deny_access = 1;
		
		if ( $this->ipsclass->check_perms($this->forum_by_id[$fid]['show_perms']) == TRUE )
		{
			if ( $this->ipsclass->check_perms($this->forum_by_id[$fid]['read_perms']) == TRUE )
			{
				$deny_access = 0;
			}
			else
			{
				//-----------------------------------------
				// Can see topics?
				//-----------------------------------------
				
				if ( $this->forum_by_id[$fid]['permission_showtopic'] )
				{
					$this->read_topic_only = 1;
					
					if ( $in == 'forum' )
					{
						$deny_access = 0;
					}
					else
					{
						//-----------------------------------------
						// Custom error?
						//-----------------------------------------
						
						$this->forums_custom_error($fid);
						
						$deny_access = 1;
					}
				}
				else
				{
					$this->forums_custom_error($fid);
					
					$deny_access = 1;
				}
			}
		}
		else
		{
			//-----------------------------------------
			// custom error
			//-----------------------------------------
			
			$this->forums_custom_error($fid);
			
			$deny_access = 1;
		}
		
		
		//-----------------------------------------
		// Do we have permission to even see the password page?
		//-----------------------------------------
		
		if ($deny_access == 0)
		{
			if ( $this->forum_by_id[$fid]['password'] AND $this->forum_by_id[$fid]['sub_can_post'] )
			{
				if ( $this->forums_compare_password( $fid ) == TRUE )
				{
					$deny_access = 0;
				}
				else
				{
					$deny_access = 1;
					
					if ( $prompt_login == 1 )
					{
						$this->forums_show_login( $fid );
					}
				}
			}
		}
		
		if ($deny_access == 1)
        {
        	$this->ipsclass->Error( array( LEVEL => 1, MSG => 'no_permission') );
        }
	}
	
	/*-------------------------------------------------------------------------*/
	// Compare forum pasword
	/*-------------------------------------------------------------------------*/
	
	function forums_compare_password( $fid )
	{
		$cookie_pass = $this->ipsclass->my_getcookie( 'ipbforumpass_'.$fid );
		
		if ( trim($cookie_pass) == md5($this->forum_by_id[$fid]['password']) )
		{
			return TRUE;
		}
		else
		{
			return FALSE;
		}
	}
	
	/*-------------------------------------------------------------------------*/
	// Quick check
	/*-------------------------------------------------------------------------*/
	
	function forums_quick_check_access($fid)
	{
		$deny_access = 1;
		
		if ( $this->ipsclass->check_perms($this->forum_by_id[$fid]['show_perms']) == TRUE )
		{
			$deny_access = 0;
		}
		
		//-----------------------------------------
		// Do we have permission to even see the password page?
		//-----------------------------------------
		
		if ($deny_access == 0)
		{
			if ($this->forum_by_id[$fid]['password'])
			{
				if ( $this->forums_compare_password( $fid ) == TRUE )
				{
					$deny_access = 0;
				}
				else
				{
					$deny_access = 1;
				}
			}
		}
		
		return $deny_access;
	}
	
	/*-------------------------------------------------------------------------*/
	// Forums custom error
	// ------------------
	// Blah-de-blah
	/*-------------------------------------------------------------------------*/
	
	function forums_custom_error( $fid )
	{
		$tmp = $this->ipsclass->DB->simple_exec_query( array( 'select' => 'permission_custom_error', 'from' => 'forums', 'where' => "id=".$fid) );
		
		if ( $tmp['permission_custom_error'] )
		{
			$this->ipsclass->load_language("lang_error");
			
			if ( ! $this->ipsclass->compiled_templates['skin_global'] )
			{
				$this->load_template('skin_global');
			}
	   
			//-----------------------------------------
			// Update session
			//-----------------------------------------
    	
    		$this->ipsclass->DB->do_shutdown_update( 'sessions', array( 'in_error' => 1 ), "id='{$this->ipsclass->my_session}'" );
			
			list($em_1, $em_2) = explode( '@', $this->ipsclass->vars['email_in'] );
			
			$html  = $this->ipsclass->compiled_templates['skin_global']->Error( $tmp['permission_custom_error'], $em_1, $em_2);
			$print = new display();
			$this->ipsclass->print->add_output($html);
			$this->ipsclass->print->do_output( array('TITLE' => $this->ipsclass->lang['error_title'] ) );
		}
	}
	
	/*-------------------------------------------------------------------------*/
	// Forums log in screen
	// ------------------
	// Blah-de-blah
	/*-------------------------------------------------------------------------*/
	
	function forums_show_login( $fid )
	{
		if ( ! class_exists( 'skin_forum' ) )
		{
			$this->ipsclass->load_template('skin_forum');
			$this->ipsclass->load_language('lang_forum');
		}
		else
		{
			$this->html = new skin_forum();
		}
		
		if (empty($this->ipsclass->member['id']))
		{
			$this->ipsclass->Error( array( 'LEVEL' => 1, 'MSG' => 'no_guests' ) );
		}
		
		$this->output = $this->ipsclass->compiled_templates['skin_forum']->forum_password_log_in( $fid );