posting.php

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<?php
/***************************************************************************
 *                                posting.php
 *                            -------------------
 *   begin                : Saturday, Feb 13, 2001
 *   copyright            : (C) 2001 The phpBB Group
 *   email                : [e-mail]
 *
 *   $Id: posting.php,v 1.1.1.1 2003/02/11 22:27:28 wei.gao Exp $
 *
 *
 ***************************************************************************/

/***************************************************************************
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 ***************************************************************************/

define('IN_PHPBB', true);
$phpbb_root_path = './';
include($phpbb_root_path . 'extension.inc');
include($phpbb_root_path . 'common.'.$phpEx);
include($phpbb_root_path . 'includes/bbcode.'.$phpEx);
include($phpbb_root_path . 'includes/functions_post.'.$phpEx);

//
// Check and set various parameters
//
$params = array('submit' => 'post', 'confirm' => 'confirm', 'preview' => 'preview', 'delete' => 'delete', 'poll_delete' => 'poll_delete', 'poll_add' => 'add_poll_option', 'poll_edit' => 'edit_poll_option', 'mode' => 'mode');
while( list($var, $param) = @each($params) )
{
	if ( !empty($HTTP_POST_VARS[$param]) || !empty($HTTP_GET_VARS[$param]) )
	{
		$$var = ( !empty($HTTP_POST_VARS[$param]) ) ? $HTTP_POST_VARS[$param] : $HTTP_GET_VARS[$param];
	}
	else
	{
		$$var = '';
	}
}

$params = array('forum_id' => POST_FORUM_URL, 'topic_id' => POST_TOPIC_URL, 'post_id' => POST_POST_URL);
while( list($var, $param) = @each($params) )
{
	if ( !empty($HTTP_POST_VARS[$param]) || !empty($HTTP_GET_VARS[$param]) )
	{
		$$var = ( !empty($HTTP_POST_VARS[$param]) ) ? intval($HTTP_POST_VARS[$param]) : intval($HTTP_GET_VARS[$param]);
	}
	else
	{
		$$var = '';
	}
}

$refresh = $preview || $poll_add || $poll_edit || $poll_delete;

//
// Set topic type
//
$topic_type = ( !empty($HTTP_POST_VARS['topictype']) ) ? intval($HTTP_POST_VARS['topictype']) : POST_NORMAL;

//
// If the mode is set to topic review then output
// that review ...
//
if ( $mode == 'topicreview' )
{
	require($phpbb_root_path . 'includes/topic_review.'.$phpEx);

	topic_review($topic_id, false);
	exit;
}
else if ( $mode == 'smilies' )
{
	generate_smilies('window', PAGE_POSTING);
	exit;
}

//
// Start session management
//
$userdata = session_pagestart($user_ip, PAGE_POSTING);
init_userprefs($userdata);
//
// End session management
//

//
// Was cancel pressed? If so then redirect to the appropriate
// page, no point in continuing with any further checks
//
if ( isset($HTTP_POST_VARS['cancel']) )
{
	if ( $post_id )
	{
		$redirect = "viewtopic.$phpEx?" . POST_POST_URL . "=$post_id";
		$post_append = "#$post_id";
	}
	else if ( $topic_id )
	{
		$redirect = "viewtopic.$phpEx?" . POST_TOPIC_URL . "=$topic_id";
		$post_append = '';
	}
	else if ( $forum_id )
	{
		$redirect = "viewforum.$phpEx?" . POST_FORUM_URL . "=$forum_id";
		$post_append = '';
	}
	else
	{
		$redirect = "index.$phpEx";
		$post_append = '';
	}

	redirect(append_sid($redirect, true) . $post_append);
}

//
// Compare sid ... if sids don't match
// output message ... note that AOL'ers may
// obtain this error until the session code
// is modified to change the 6 to 4 in the IP
// comparison checks ... or if a user takes
// longer than session time to submit the form
// both can be easily altered by the admin
//
/* if ( $submit || $refresh )
{
	if (!isset($HTTP_POST_VARS['sid']) || $HTTP_POST_VARS['sid'] != $userdata['session_id'])
	{
		// I've not added this to the language set at this time ... re-releasing
		// every single language to include this for the once in a blue moon
		// time it will be output is just not worthwhile at present.
		message_die(GENERAL_MESSAGE, 'Invalid_session');
	}
} */

//
// What auth type do we need to check?
//
$is_auth = array();
switch( $mode )
{
	case 'newtopic':
		if ( $topic_type == POST_GLOBAL_ANNOUNCE ) 
			$is_auth_type = 'auth_globalannounce'; 
		else if ( $topic_type == POST_ANNOUNCE )
		{
			$is_auth_type = 'auth_announce';
		}
		else if ( $topic_type == POST_STICKY )
		{
			$is_auth_type = 'auth_sticky';
		}
		else
		{
			$is_auth_type = 'auth_post';
		}
		break;
	case 'reply':
	case 'quote':
		$is_auth_type = 'auth_reply';
		break;
	case 'editpost':
		$is_auth_type = 'auth_edit';
		break;
	case 'delete':
	case 'poll_delete':
		$is_auth_type = 'auth_delete';
		break;
	case 'vote':
		$is_auth_type = 'auth_vote';
		break;
	case 'topicreview':
		$is_auth_type = 'auth_read';
		break;
	default:
		message_die(GENERAL_MESSAGE, $lang['No_post_mode']);
		break;
}

//
// Here we do various lookups to find topic_id, forum_id, post_id etc.
// Doing it here prevents spoofing (eg. faking forum_id, topic_id or post_id
//
$error_msg = '';
$post_data = array();
switch ( $mode )
{
	case 'newtopic':
		if ( empty($forum_id) )
		{
			message_die(GENERAL_MESSAGE, $lang['Forum_not_exist']);
		}

		$sql = "SELECT * 
			FROM " . FORUMS_TABLE . " 
			WHERE forum_id = $forum_id";
		break;

	case 'reply':
	case 'vote':
		if ( empty( $topic_id) )
		{
			message_die(GENERAL_MESSAGE, $lang['No_topic_id']);
		}

		$sql = "SELECT f.*, t.topic_status, t.topic_title  
			FROM " . FORUMS_TABLE . " f, " . TOPICS_TABLE . " t
			WHERE t.topic_id = $topic_id
				AND f.forum_id = t.forum_id";
		break;

	case 'quote':
	case 'editpost':
	case 'delete':
	case 'poll_delete':
		if ( empty($post_id) )
		{
			message_die(GENERAL_MESSAGE, $lang['No_post_id']);
		}

		$select_sql = ( !$submit ) ? ", t.topic_title, p.enable_bbcode, p.enable_html, p.enable_smilies, p.enable_sig, p.post_username, pt.post_subject, pt.post_text, pt.bbcode_uid, u.username, u.user_id, u.user_sig" : '';
		$from_sql = ( !$submit ) ? ", " . POSTS_TEXT_TABLE . " pt, " . USERS_TABLE . " u" : '';
		$where_sql = ( !$submit ) ? "AND pt.post_id = p.post_id AND u.user_id = p.poster_id" : '';

		$sql = "SELECT f.*, t.topic_id, t.topic_status, t.topic_type, t.topic_first_post_id, t.topic_last_post_id, t.topic_vote, p.post_id, p.poster_id" . $select_sql . " 
			FROM " . POSTS_TABLE . " p, " . TOPICS_TABLE . " t, " . FORUMS_TABLE . " f" . $from_sql . " 
			WHERE p.post_id = $post_id 
				AND t.topic_id = p.topic_id 
				AND f.forum_id = p.forum_id
				$where_sql";
		break;

	default:
		message_die(GENERAL_MESSAGE, $lang['No_valid_mode']);
}

if ( $result = $db->sql_query($sql) )
{
	$post_info = $db->sql_fetchrow($result);

	$forum_id = $post_info['forum_id'];
	$forum_name = $post_info['forum_name'];

	$is_auth = auth(AUTH_ALL, $forum_id, $userdata, $post_info);

	if ( $post_info['forum_status'] == FORUM_LOCKED && !$is_auth['auth_mod']) 
	{ 
	   message_die(GENERAL_MESSAGE, $lang['Forum_locked']); 
	} 
	else if ( $mode != 'newtopic' && $post_info['topic_status'] == TOPIC_LOCKED && !$is_auth['auth_mod']) 
	{ 
	   message_die(GENERAL_MESSAGE, $lang['Topic_locked']); 
	} 

	if ( $mode == 'editpost' || $mode == 'delete' || $mode == 'poll_delete' )
	{
		$topic_id = $post_info['topic_id'];

		$post_data['poster_post'] = ( $post_info['poster_id'] == $userdata['user_id'] ) ? true : false;
		$post_data['first_post'] = ( $post_info['topic_first_post_id'] == $post_id ) ? true : false;
		$post_data['last_post'] = ( $post_info['topic_last_post_id'] == $post_id ) ? true : false;
		$post_data['last_topic'] = ( $post_info['forum_last_post_id'] == $post_id ) ? true : false;
		$post_data['has_poll'] = ( $post_info['topic_vote'] ) ? true : false; 
		$post_data['topic_type'] = $post_info['topic_type'];
		$post_data['poster_id'] = $post_info['poster_id'];

		if ( $post_data['first_post'] && $post_data['has_poll'] )
		{
			$sql = "SELECT * 
				FROM " . VOTE_DESC_TABLE . " vd, " . VOTE_RESULTS_TABLE . " vr 
				WHERE vd.topic_id = $topic_id 
					AND vr.vote_id = vd.vote_id 
				ORDER BY vr.vote_option_id";
			if ( !($result = $db->sql_query($sql)) )
			{
				message_die(GENERAL_ERROR, 'Could not obtain vote data for this topic', '', __LINE__, __FILE__, $sql);
			}

			$poll_options = array();
			$poll_results_sum = 0;
			if ( $row = $db->sql_fetchrow($result) )
			{
				$poll_title = $row['vote_text'];
				$poll_id = $row['vote_id'];
				$poll_length = $row['vote_length'] / 86400;

				do
				{
					$poll_options[$row['vote_option_id']] = $row['vote_option_text']; 
					$poll_results_sum += $row['vote_result'];
				}
				while ( $row = $db->sql_fetchrow($result) );
			}

			$post_data['edit_poll'] = ( ( !$poll_results_sum || $is_auth['auth_mod'] ) && $post_data['first_post'] ) ? true : 0;
		}
		else 
		{
			$post_data['edit_poll'] = ($post_data['first_post'] && $is_auth['auth_pollcreate']) ? true : false;
		}
		
		//
		// Can this user edit/delete the post/poll?
		//
		if ( $post_info['poster_id'] != $userdata['user_id'] && !$is_auth['auth_mod'] )
		{
			$message = ( $delete || $mode == 'delete' ) ? $lang['Delete_own_posts'] : $lang['Edit_own_posts'];
			$message .= '<br /><br />' . sprintf($lang['Click_return_topic'], '<a href="' . append_sid("viewtopic.$phpEx?" . POST_TOPIC_URL . "=$topic_id") . '">', '</a>');

			message_die(GENERAL_MESSAGE, $message);
		}
		else if ( !$post_data['last_post'] && !$is_auth['auth_mod'] && ( $mode == 'delete' || $delete ) )
		{
			message_die(GENERAL_MESSAGE, $lang['Cannot_delete_replied']);
		}
		else if ( !$post_data['edit_poll'] && !$is_auth['auth_mod'] && ( $mode == 'poll_delete' || $poll_delete ) )
		{
			message_die(GENERAL_MESSAGE, $lang['Cannot_delete_poll']);
		}
	}
	else
	{
		if ( $mode == 'quote' )
		{
			$topic_id = $post_info['topic_id'];
		}

		$post_data['first_post'] = ( $mode == 'newtopic' ) ? true : 0;
		$post_data['last_post'] = false;
		$post_data['has_poll'] = false;
		$post_data['edit_poll'] = false;
	}
}
else
{
	message_die(GENERAL_MESSAGE, $lang['No_such_post']);
}

//
// The user is not authed, if they're not logged in then redirect
// them, else show them an error message
//
if ( !$is_auth[$is_auth_type] )
{
	if ( $userdata['session_logged_in'] )
	{
		message_die(GENERAL_MESSAGE, sprintf($lang['Sorry_' . $is_auth_type], $is_auth[$is_auth_type . "_type"]));
	}

	switch( $mode )
	{
		case 'newtopic':
			$redirect = "mode=newtopic&" . POST_FORUM_URL . "=" . $forum_id;
			break;
		case 'reply':
		case 'topicreview':
			$redirect = "mode=reply&" . POST_TOPIC_URL . "=" . $topic_id;
			break;
		case 'quote':
		case 'editpost':
			$redirect = "mode=quote&" . POST_POST_URL ."=" . $post_id;
			break;
	}

	redirect(append_sid("login.$phpEx?redirect=posting.$phpEx&" . $redirect, true));
}

//
// Set toggles for various options
//
if ( !$board_config['allow_html'] )
{