--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/forum/Sources/Poll.php	Sun Jul 07 11:25:48 2013 +0200
@@ -0,0 +1,973 @@
+<?php
+
+/**
+ * Simple Machines Forum (SMF)
+ *
+ * @package SMF
+ * @author Simple Machines http://www.simplemachines.org
+ * @copyright 2011 Simple Machines
+ * @license http://www.simplemachines.org/about/smf/license.php BSD
+ *
+ * @version 2.0
+ */
+
+if (!defined('SMF'))
+	die('Hacking attempt...');
+
+/*	This file contains the functions for voting, locking, removing and editing
+	polls. Note that that posting polls is done in Post.php.
+
+	void Vote()
+		- is called to register a vote in a poll.
+		- must be called with a topic and option specified.
+		- uses the Post language file.
+		- requires the poll_vote permission.
+		- upon successful completion of action will direct user back to topic.
+		- is accessed via ?action=vote.
+
+	void LockVoting()
+		- is called to lock or unlock voting on a poll.
+		- must be called with a topic specified in the URL.
+		- an admin always has over riding permission to lock a poll.
+		- if not an admin must have poll_lock_any permission.
+		- otherwise must be poll starter with poll_lock_own permission.
+		- upon successful completion of action will direct user back to topic.
+		- is accessed via ?action=lockvoting.
+
+	void EditPoll()
+		- is called to display screen for editing or adding a poll.
+		- must be called with a topic specified in the URL.
+		- if the user is adding a poll to a topic, must contain the variable
+		  'add' in the url.
+		- uses the Post language file.
+		- uses the Poll template (main sub template.).
+		- user must have poll_edit_any/poll_add_any permission for the relevant
+		  action.
+		- otherwise must be poll starter with poll_edit_own permission for
+		  editing, or be topic starter with poll_add_any permission for adding.
+		- is accessed via ?action=editpoll.
+
+	void EditPoll2()
+		- is called to update the settings for a poll, or add a new one.
+		- must be called with a topic specified in the URL.
+		- user must have poll_edit_any/poll_add_any permission for the relevant
+		  action.
+		- otherwise must be poll starter with poll_edit_own permission for
+		  editing, or be topic starter with poll_add_any permission for adding.
+		- in the case of an error will redirect back to EditPoll and display
+		  the relevant error message.
+		- upon successful completion of action will direct user back to topic.
+		- is accessed via ?action=editpoll2.
+
+	void RemovePoll()
+		- is called to remove a poll from a topic.
+		- must be called with a topic specified in the URL.
+		- user must have poll_remove_any permission.
+		- otherwise must be poll starter with poll_remove_own permission.
+		- upon successful completion of action will direct user back to topic.
+		- is accessed via ?action=removepoll.
+*/
+
+// Allow the user to vote.
+function Vote()
+{
+	global $topic, $txt, $user_info, $smcFunc, $sourcedir, $modSettings;
+
+	// Make sure you can vote.
+	isAllowedTo('poll_vote');
+
+	loadLanguage('Post');
+
+	// Check if they have already voted, or voting is locked.
+	$request = $smcFunc['db_query']('', '
+		SELECT IFNULL(lp.id_choice, -1) AS selected, p.voting_locked, p.id_poll, p.expire_time, p.max_votes, p.change_vote,
+			p.guest_vote, p.reset_poll, p.num_guest_voters
+		FROM {db_prefix}topics AS t
+			INNER JOIN {db_prefix}polls AS p ON (p.id_poll = t.id_poll)
+			LEFT JOIN {db_prefix}log_polls AS lp ON (p.id_poll = lp.id_poll AND lp.id_member = {int:current_member} AND lp.id_member != {int:not_guest})
+		WHERE t.id_topic = {int:current_topic}
+		LIMIT 1',
+		array(
+			'current_member' => $user_info['id'],
+			'current_topic' => $topic,
+			'not_guest' => 0,
+		)
+	);
+	if ($smcFunc['db_num_rows']($request) == 0)
+		fatal_lang_error('poll_error', false);
+	$row = $smcFunc['db_fetch_assoc']($request);
+	$smcFunc['db_free_result']($request);
+
+	// If this is a guest can they vote?
+	if ($user_info['is_guest'])
+	{
+		// Guest voting disabled?
+		if (!$row['guest_vote'])
+			fatal_lang_error('guest_vote_disabled');
+		// Guest already voted?
+		elseif (!empty($_COOKIE['guest_poll_vote']) && preg_match('~^[0-9,;]+$~', $_COOKIE['guest_poll_vote']) && strpos($_COOKIE['guest_poll_vote'], ';' . $row['id_poll'] . ',') !== false)
+		{
+			// ;id,timestamp,[vote,vote...]; etc
+			$guestinfo = explode(';', $_COOKIE['guest_poll_vote']);
+			// Find the poll we're after.
+			foreach ($guestinfo as $i => $guestvoted)
+			{
+				$guestvoted = explode(',', $guestvoted);
+				if ($guestvoted[0] == $row['id_poll'])
+					break;
+			}
+			// Has the poll been reset since guest voted?
+			if ($row['reset_poll'] > $guestvoted[1])
+			{
+				// Remove the poll info from the cookie to allow guest to vote again
+				unset($guestinfo[$i]);
+				if (!empty($guestinfo))
+					$_COOKIE['guest_poll_vote'] = ';' . implode(';', $guestinfo);
+				else
+					unset($_COOKIE['guest_poll_vote']);
+			}
+			else
+				fatal_lang_error('poll_error', false);
+			unset($guestinfo, $guestvoted, $i);
+		}
+	}
+
+	// Is voting locked or has it expired?
+	if (!empty($row['voting_locked']) || (!empty($row['expire_time']) && time() > $row['expire_time']))
+		fatal_lang_error('poll_error', false);
+
+	// If they have already voted and aren't allowed to change their vote - hence they are outta here!
+	if (!$user_info['is_guest'] && $row['selected'] != -1 && empty($row['change_vote']))
+		fatal_lang_error('poll_error', false);
+	// Otherwise if they can change their vote yet they haven't sent any options... remove their vote and redirect.
+	elseif (!empty($row['change_vote']) && !$user_info['is_guest'])
+	{
+		checkSession('request');
+		$pollOptions = array();
+
+		// Find out what they voted for before.
+		$request = $smcFunc['db_query']('', '
+			SELECT id_choice
+			FROM {db_prefix}log_polls
+			WHERE id_member = {int:current_member}
+				AND id_poll = {int:id_poll}',
+			array(
+				'current_member' => $user_info['id'],
+				'id_poll' => $row['id_poll'],
+			)
+		);
+		while ($choice = $smcFunc['db_fetch_row']($request))
+			$pollOptions[] = $choice[0];
+		$smcFunc['db_free_result']($request);
+
+		// Just skip it if they had voted for nothing before.
+		if (!empty($pollOptions))
+		{
+			// Update the poll totals.
+			$smcFunc['db_query']('', '
+				UPDATE {db_prefix}poll_choices
+				SET votes = votes - 1
+				WHERE id_poll = {int:id_poll}
+					AND id_choice IN ({array_int:poll_options})
+					AND votes > {int:votes}',
+				array(
+					'poll_options' => $pollOptions,
+					'id_poll' => $row['id_poll'],
+					'votes' => 0,
+				)
+			);
+
+			// Delete off the log.
+			$smcFunc['db_query']('', '
+				DELETE FROM {db_prefix}log_polls
+				WHERE id_member = {int:current_member}
+					AND id_poll = {int:id_poll}',
+				array(
+					'current_member' => $user_info['id'],
+					'id_poll' => $row['id_poll'],
+				)
+			);
+		}
+
+		// Redirect back to the topic so the user can vote again!
+		if (empty($_POST['options']))
+			redirectexit('topic=' . $topic . '.' . $_REQUEST['start']);
+	}
+
+	checkSession('request');
+
+	// Make sure the option(s) are valid.
+	if (empty($_POST['options']))
+		fatal_lang_error('didnt_select_vote', false);
+
+	// Too many options checked!
+	if (count($_REQUEST['options']) > $row['max_votes'])
+		fatal_lang_error('poll_too_many_votes', false, array($row['max_votes']));
+
+	$pollOptions = array();
+	$inserts = array();
+	foreach ($_REQUEST['options'] as $id)
+	{
+		$id = (int) $id;
+
+		$pollOptions[] = $id;
+		$inserts[] = array($row['id_poll'], $user_info['id'], $id);
+	}
+
+	// Add their vote to the tally.
+	$smcFunc['db_insert']('insert',
+		'{db_prefix}log_polls',
+		array('id_poll' => 'int', 'id_member' => 'int', 'id_choice' => 'int'),
+		$inserts,
+		array('id_poll', 'id_member', 'id_choice')
+	);
+
+	$smcFunc['db_query']('', '
+		UPDATE {db_prefix}poll_choices
+		SET votes = votes + 1
+		WHERE id_poll = {int:id_poll}
+			AND id_choice IN ({array_int:poll_options})',
+		array(
+			'poll_options' => $pollOptions,
+			'id_poll' => $row['id_poll'],
+		)
+	);
+
+	// If it's a guest don't let them vote again.
+	if ($user_info['is_guest'] && count($pollOptions) > 0)
+	{
+		// Time is stored in case the poll is reset later, plus what they voted for.
+		$_COOKIE['guest_poll_vote'] = empty($_COOKIE['guest_poll_vote']) ? '' : $_COOKIE['guest_poll_vote'];
+		// ;id,timestamp,[vote,vote...]; etc
+		$_COOKIE['guest_poll_vote'] .= ';' . $row['id_poll'] . ',' . time() . ',' . (count($pollOptions) > 1 ? explode(',' . $pollOptions) : $pollOptions[0]);
+
+		// Increase num guest voters count by 1
+		$smcFunc['db_query']('', '
+			UPDATE {db_prefix}polls
+			SET num_guest_voters = num_guest_voters + 1
+			WHERE id_poll = {int:id_poll}',
+			array(
+				'id_poll' => $row['id_poll'],
+			)
+		);
+
+		require_once($sourcedir . '/Subs-Auth.php');
+		$cookie_url = url_parts(!empty($modSettings['localCookies']), !empty($modSettings['globalCookies']));
+		setcookie('guest_poll_vote', $_COOKIE['guest_poll_vote'], time() + 2500000, $cookie_url[1], $cookie_url[0], 0);
+	}
+
+	// Return to the post...
+	redirectexit('topic=' . $topic . '.' . $_REQUEST['start']);
+}
+
+// Lock the voting for a poll.
+function LockVoting()
+{
+	global $topic, $user_info, $smcFunc;
+
+	checkSession('get');
+
+	// Get the poll starter, ID, and whether or not it is locked.
+	$request = $smcFunc['db_query']('', '
+		SELECT t.id_member_started, t.id_poll, p.voting_locked
+		FROM {db_prefix}topics AS t
+			INNER JOIN {db_prefix}polls AS p ON (p.id_poll = t.id_poll)
+		WHERE t.id_topic = {int:current_topic}
+		LIMIT 1',
+		array(
+			'current_topic' => $topic,
+		)
+	);
+	list ($memberID, $pollID, $voting_locked) = $smcFunc['db_fetch_row']($request);
+
+	// If the user _can_ modify the poll....
+	if (!allowedTo('poll_lock_any'))
+		isAllowedTo('poll_lock_' . ($user_info['id'] == $memberID ? 'own' : 'any'));
+
+	// It's been locked by a non-moderator.
+	if ($voting_locked == '1')
+		$voting_locked = '0';
+	// Locked by a moderator, and this is a moderator.
+	elseif ($voting_locked == '2' && allowedTo('moderate_board'))
+		$voting_locked = '0';
+	// Sorry, a moderator locked it.
+	elseif ($voting_locked == '2' && !allowedTo('moderate_board'))
+		fatal_lang_error('locked_by_admin', 'user');
+	// A moderator *is* locking it.
+	elseif ($voting_locked == '0' && allowedTo('moderate_board'))
+		$voting_locked = '2';
+	// Well, it's gonna be locked one way or another otherwise...
+	else
+		$voting_locked = '1';
+
+	// Lock!  *Poof* - no one can vote.
+	$smcFunc['db_query']('', '
+		UPDATE {db_prefix}polls
+		SET voting_locked = {int:voting_locked}
+		WHERE id_poll = {int:id_poll}',
+		array(
+			'voting_locked' => $voting_locked,
+			'id_poll' => $pollID,
+		)
+	);
+
+	redirectexit('topic=' . $topic . '.' . $_REQUEST['start']);
+}
+
+// Ask what to change in a poll.
+function EditPoll()
+{
+	global $txt, $user_info, $context, $topic, $board, $smcFunc, $sourcedir, $scripturl;
+
+	if (empty($topic))
+		fatal_lang_error('no_access', false);
+
+	loadLanguage('Post');
+	loadTemplate('Poll');
+
+	$context['can_moderate_poll'] = isset($_REQUEST['add']) ? 1 : allowedTo('moderate_board');
+	$context['start'] = (int) $_REQUEST['start'];
+	$context['is_edit'] = isset($_REQUEST['add']) ? 0 : 1;
+
+	// Check if a poll currently exists on this topic, and get the id, question and starter.
+	$request = $smcFunc['db_query']('', '
+		SELECT
+			t.id_member_started, p.id_poll, p.question, p.hide_results, p.expire_time, p.max_votes, p.change_vote,
+			m.subject, p.guest_vote, p.id_member AS poll_starter
+		FROM {db_prefix}topics AS t
+			INNER JOIN {db_prefix}messages AS m ON (m.id_msg = t.id_first_msg)
+			LEFT JOIN {db_prefix}polls AS p ON (p.id_poll = t.id_poll)
+		WHERE t.id_topic = {int:current_topic}
+		LIMIT 1',
+		array(
+			'current_topic' => $topic,
+		)
+	);
+
+	// Assume the the topic exists, right?
+	if ($smcFunc['db_num_rows']($request) == 0)
+		fatal_lang_error('no_board');
+	// Get the poll information.
+	$pollinfo = $smcFunc['db_fetch_assoc']($request);
+	$smcFunc['db_free_result']($request);
+
+	// If we are adding a new poll - make sure that there isn't already a poll there.
+	if (!$context['is_edit'] && !empty($pollinfo['id_poll']))
+		fatal_lang_error('poll_already_exists');
+	// Otherwise, if we're editing it, it does exist I assume?
+	elseif ($context['is_edit'] && empty($pollinfo['id_poll']))
+		fatal_lang_error('poll_not_found');
+
+	// Can you do this?
+	if ($context['is_edit'] && !allowedTo('poll_edit_any'))
+		isAllowedTo('poll_edit_' . ($user_info['id'] == $pollinfo['id_member_started'] || ($pollinfo['poll_starter'] != 0 && $user_info['id'] == $pollinfo['poll_starter']) ? 'own' : 'any'));
+	elseif (!$context['is_edit'] && !allowedTo('poll_add_any'))
+		isAllowedTo('poll_add_' . ($user_info['id'] == $pollinfo['id_member_started'] ? 'own' : 'any'));
+
+	// Do we enable guest voting?
+	require_once($sourcedir . '/Subs-Members.php');
+	$groupsAllowedVote = groupsAllowedTo('poll_vote', $board);
+
+	// Want to make sure before you actually submit?  Must be a lot of options, or something.
+	if (isset($_POST['preview']))
+	{
+		$question = $smcFunc['htmlspecialchars']($_POST['question']);
+
+		// Basic theme info...
+		$context['poll'] = array(
+			'id' => $pollinfo['id_poll'],
+			'question' => $question,
+			'hide_results' => empty($_POST['poll_hide']) ? 0 : $_POST['poll_hide'],
+			'change_vote' => isset($_POST['poll_change_vote']),
+			'guest_vote' => isset($_POST['poll_guest_vote']),
+			'guest_vote_allowed' => in_array(-1, $groupsAllowedVote['allowed']),
+			'max_votes' => empty($_POST['poll_max_votes']) ? '1' : max(1, $_POST['poll_max_votes']),
+		);
+
+		// Start at number one with no last id to speak of.
+		$number = 1;
+		$last_id = 0;
+
+		// Get all the choices - if this is an edit.
+		if ($context['is_edit'])
+		{
+			$request = $smcFunc['db_query']('', '
+				SELECT label, votes, id_choice
+				FROM {db_prefix}poll_choices
+				WHERE id_poll = {int:id_poll}',
+				array(
+					'id_poll' => $pollinfo['id_poll'],
+				)
+			);
+			$context['choices'] = array();
+			while ($row = $smcFunc['db_fetch_assoc']($request))
+			{
+				// Get the highest id so we can add more without reusing.
+				if ($row['id_choice'] >= $last_id)
+					$last_id = $row['id_choice'] + 1;
+
+				// They cleared this by either omitting it or emptying it.
+				if (!isset($_POST['options'][$row['id_choice']]) || $_POST['options'][$row['id_choice']] == '')
+					continue;
+
+				censorText($row['label']);
+
+				// Add the choice!
+				$context['choices'][$row['id_choice']] = array(
+					'id' => $row['id_choice'],
+					'number' => $number++,
+					'votes' => $row['votes'],
+					'label' => $row['label'],
+					'is_last' => false
+				);
+			}
+			$smcFunc['db_free_result']($request);
+		}
+
+		// Work out how many options we have, so we get the 'is_last' field right...
+		$totalPostOptions = 0;
+		foreach ($_POST['options'] as $id => $label)
+			if ($label != '')
+				$totalPostOptions++;
+
+		$count = 1;
+		// If an option exists, update it.  If it is new, add it - but don't reuse ids!
+		foreach ($_POST['options'] as $id => $label)
+		{
+			$label = $smcFunc['htmlspecialchars']($label);
+			censorText($label);
+
+			if (isset($context['choices'][$id]))
+				$context['choices'][$id]['label'] = $label;
+			elseif ($label != '')
+				$context['choices'][] = array(
+					'id' => $last_id++,
+					'number' => $number++,
+					'label' => $label,
+					'votes' => -1,
+					'is_last' => $count++ == $totalPostOptions && $totalPostOptions > 1 ? true : false,
+				);
+		}
+
+		// Make sure we have two choices for sure!
+		if ($totalPostOptions < 2)
+		{
+			// Need two?
+			if ($totalPostOptions == 0)
+				$context['choices'][] = array(
+					'id' => $last_id++,
+					'number' => $number++,
+					'label' => '',
+					'votes' => -1,
+					'is_last' => false
+				);
+			$poll_errors[] = 'poll_few';
+		}
+
+		// Always show one extra box...
+		$context['choices'][] = array(
+			'id' => $last_id++,
+			'number' => $number++,
+			'label' => '',
+			'votes' => -1,
+			'is_last' => true
+		);
+
+		if ($context['can_moderate_poll'])
+			$context['poll']['expiration'] = $_POST['poll_expire'];
+
+		// Check the question/option count for errors.
+		if (trim($_POST['question']) == '' && empty($context['poll_error']))
+			$poll_errors[] = 'no_question';
+
+		// No check is needed, since nothing is really posted.
+		checkSubmitOnce('free');
+
+		// Take a check for any errors... assuming we haven't already done so!
+		if (!empty($poll_errors) && empty($context['poll_error']))
+		{
+			loadLanguage('Errors');
+
+			$context['poll_error'] = array('messages' => array());
+			foreach ($poll_errors as $poll_error)
+			{
+				$context['poll_error'][$poll_error] = true;
+				$context['poll_error']['messages'][] = $txt['error_' . $poll_error];
+			}
+		}
+	}
+	else
+	{
+		// Basic theme info...
+		$context['poll'] = array(
+			'id' => $pollinfo['id_poll'],
+			'question' => $pollinfo['question'],
+			'hide_results' => $pollinfo['hide_results'],
+			'max_votes' => $pollinfo['max_votes'],
+			'change_vote' => !empty($pollinfo['change_vote']),
+			'guest_vote' => !empty($pollinfo['guest_vote']),
+			'guest_vote_allowed' => in_array(-1, $groupsAllowedVote['allowed']),
+		);
+
+		// Poll expiration time?
+		$context['poll']['expiration'] = empty($pollinfo['expire_time']) || !allowedTo('moderate_board') ? '' : ceil($pollinfo['expire_time'] <= time() ? -1 : ($pollinfo['expire_time'] - time()) / (3600 * 24));
+
+		// Get all the choices - if this is an edit.
+		if ($context['is_edit'])
+		{
+			$request = $smcFunc['db_query']('', '
+				SELECT label, votes, id_choice
+				FROM {db_prefix}poll_choices
+				WHERE id_poll = {int:id_poll}',
+				array(
+					'id_poll' => $pollinfo['id_poll'],
+				)
+			);
+			$context['choices'] = array();
+			$number = 1;
+			while ($row = $smcFunc['db_fetch_assoc']($request))
+			{
+				censorText($row['label']);
+
+				$context['choices'][$row['id_choice']] = array(
+					'id' => $row['id_choice'],
+					'number' => $number++,
+					'votes' => $row['votes'],
+					'label' => $row['label'],
+					'is_last' => false
+				);
+			}
+			$smcFunc['db_free_result']($request);
+
+			$last_id = max(array_keys($context['choices'])) + 1;
+
+			// Add an extra choice...
+			$context['choices'][] = array(
+				'id' => $last_id,
+				'number' => $number,
+				'votes' => -1,
+				'label' => '',
+				'is_last' => true
+			);
+		}
+		// New poll?
+		else
+		{
+			// Setup the default poll options.
+			$context['poll'] = array(
+				'id' => 0,
+				'question' => '',
+				'hide_results' => 0,
+				'max_votes' => 1,
+				'change_vote' => 0,
+				'guest_vote' => 0,
+				'guest_vote_allowed' => in_array(-1, $groupsAllowedVote['allowed']),
+				'expiration' => '',
+			);
+
+			// Make all five poll choices empty.
+			$context['choices'] = array(
+				array('id' => 0, 'number' => 1, 'votes' => -1, 'label' => '', 'is_last' => false),
+				array('id' => 1, 'number' => 2, 'votes' => -1, 'label' => '', 'is_last' => false),
+				array('id' => 2, 'number' => 3, 'votes' => -1, 'label' => '', 'is_last' => false),
+				array('id' => 3, 'number' => 4, 'votes' => -1, 'label' => '', 'is_last' => false),
+				array('id' => 4, 'number' => 5, 'votes' => -1, 'label' => '', 'is_last' => true)
+			);
+		}
+	}
+	$context['page_title'] = $context['is_edit'] ? $txt['poll_edit'] : $txt['add_poll'];
+
+	// Build the link tree.
+	censorText($pollinfo['subject']);
+	$context['linktree'][] = array(
+		'url' => $scripturl . '?topic=' . $topic . '.0',
+		'name' => $pollinfo['subject'],
+	);
+	$context['linktree'][] = array(
+		'name' => $context['page_title'],
+	);
+
+	// Register this form in the session variables.
+	checkSubmitOnce('register');
+}
+
+// Change a poll...
+function EditPoll2()
+{
+	global $txt, $topic, $board, $context;
+	global $modSettings, $user_info, $smcFunc, $sourcedir;
+
+	// Sneaking off, are we?
+	if (empty($_POST))
+		redirectexit('action=editpoll;topic=' . $topic . '.0');
+
+	if (checkSession('post', '', false) != '')
+		$poll_errors[] = 'session_timeout';
+
+	if (isset($_POST['preview']))
+		return EditPoll();
+
+	// HACKERS (!!) can't edit :P.
+	if (empty($topic))
+		fatal_lang_error('no_access', false);
+
+	// Is this a new poll, or editing an existing?
+	$isEdit = isset($_REQUEST['add']) ? 0 : 1;
+
+	// Get the starter and the poll's ID - if it's an edit.
+	$request = $smcFunc['db_query']('', '
+		SELECT t.id_member_started, t.id_poll, p.id_member AS poll_starter, p.expire_time
+		FROM {db_prefix}topics AS t
+			LEFT JOIN {db_prefix}polls AS p ON (p.id_poll = t.id_poll)
+		WHERE t.id_topic = {int:current_topic}
+		LIMIT 1',
+		array(
+			'current_topic' => $topic,
+		)
+	);
+	if ($smcFunc['db_num_rows']($request) == 0)
+		fatal_lang_error('no_board');
+	$bcinfo = $smcFunc['db_fetch_assoc']($request);
+	$smcFunc['db_free_result']($request);
+
+	// Check their adding/editing is valid.
+	if (!$isEdit && !empty($bcinfo['id_poll']))
+		fatal_lang_error('poll_already_exists');
+	// Are we editing a poll which doesn't exist?
+	elseif ($isEdit && empty($bcinfo['id_poll']))
+		fatal_lang_error('poll_not_found');
+
+	// Check if they have the power to add or edit the poll.
+	if ($isEdit && !allowedTo('poll_edit_any'))
+		isAllowedTo('poll_edit_' . ($user_info['id'] == $bcinfo['id_member_started'] || ($bcinfo['poll_starter'] != 0 && $user_info['id'] == $bcinfo['poll_starter']) ? 'own' : 'any'));
+	elseif (!$isEdit && !allowedTo('poll_add_any'))
+		isAllowedTo('poll_add_' . ($user_info['id'] == $bcinfo['id_member_started'] ? 'own' : 'any'));
+
+	$optionCount = 0;
+	// Ensure the user is leaving a valid amount of options - there must be at least two.
+	foreach ($_POST['options'] as $k => $option)
+	{
+		if (trim($option) != '')
+			$optionCount++;
+	}
+	if ($optionCount < 2)
+		$poll_errors[] = 'poll_few';
+
+	// Also - ensure they are not removing the question.
+	if (trim($_POST['question']) == '')
+		$poll_errors[] = 'no_question';
+
+	// Got any errors to report?
+	if (!empty($poll_errors))
+	{
+		loadLanguage('Errors');
+		// Previewing.
+		$_POST['preview'] = true;
+
+		$context['poll_error'] = array('messages' => array());
+		foreach ($poll_errors as $poll_error)
+		{
+			$context['poll_error'][$poll_error] = true;
+			$context['poll_error']['messages'][] = $txt['error_' . $poll_error];
+		}
+
+		return EditPoll();
+	}
+
+	// Prevent double submission of this form.
+	checkSubmitOnce('check');
+
+	// Now we've done all our error checking, let's get the core poll information cleaned... question first.
+	$_POST['question'] = $smcFunc['htmlspecialchars']($_POST['question']);
+	$_POST['question'] = $smcFunc['truncate']($_POST['question'], 255);
+
+	$_POST['poll_hide'] = (int) $_POST['poll_hide'];
+	$_POST['poll_expire'] = isset($_POST['poll_expire']) ? (int) $_POST['poll_expire'] : 0;
+	$_POST['poll_change_vote'] = isset($_POST['poll_change_vote']) ? 1 : 0;
+	$_POST['poll_guest_vote'] = isset($_POST['poll_guest_vote']) ? 1 : 0;
+
+	// Make sure guests are actually allowed to vote generally.
+	if ($_POST['poll_guest_vote'])
+	{
+		require_once($sourcedir . '/Subs-Members.php');
+		$allowedGroups = groupsAllowedTo('poll_vote', $board);
+		if (!in_array(-1, $allowedGroups['allowed']))
+			$_POST['poll_guest_vote'] = 0;
+	}
+
+	// Ensure that the number options allowed makes sense, and the expiration date is valid.
+	if (!$isEdit || allowedTo('moderate_board'))
+	{
+		$_POST['poll_expire'] = $_POST['poll_expire'] > 9999 ? 9999 : ($_POST['poll_expire'] < 0 ? 0 : $_POST['poll_expire']);
+
+		if (empty($_POST['poll_expire']) && $_POST['poll_hide'] == 2)
+			$_POST['poll_hide'] = 1;
+		elseif (!$isEdit || $_POST['poll_expire'] != ceil($bcinfo['expire_time'] <= time() ? -1 : ($bcinfo['expire_time'] - time()) / (3600 * 24)))
+			$_POST['poll_expire'] = empty($_POST['poll_expire']) ? '0' : time() + $_POST['poll_expire'] * 3600 * 24;
+		else
+			$_POST['poll_expire'] = $bcinfo['expire_time'];
+
+		if (empty($_POST['poll_max_votes']) || $_POST['poll_max_votes'] <= 0)
+			$_POST['poll_max_votes'] = 1;
+		else
+			$_POST['poll_max_votes'] = (int) $_POST['poll_max_votes'];
+	}
+
+	// If we're editing, let's commit the changes.
+	if ($isEdit)
+	{
+		$smcFunc['db_query']('', '
+			UPDATE {db_prefix}polls
+			SET question = {string:question}, change_vote = {int:change_vote},' . (allowedTo('moderate_board') ? '
+				hide_results = {int:hide_results}, expire_time = {int:expire_time}, max_votes = {int:max_votes},
+				guest_vote = {int:guest_vote}' : '
+				hide_results = CASE WHEN expire_time = {int:expire_time_zero} AND {int:hide_results} = 2 THEN 1 ELSE {int:hide_results} END') . '
+			WHERE id_poll = {int:id_poll}',
+			array(
+				'change_vote' => $_POST['poll_change_vote'],
+				'hide_results' => $_POST['poll_hide'],
+				'expire_time' => !empty($_POST['poll_expire']) ? $_POST['poll_expire'] : 0,
+				'max_votes' => !empty($_POST['poll_max_votes']) ? $_POST['poll_max_votes'] : 0,
+				'guest_vote' => $_POST['poll_guest_vote'],
+				'expire_time_zero' => 0,
+				'id_poll' => $bcinfo['id_poll'],
+				'question' => $_POST['question'],
+			)
+		);
+	}
+	// Otherwise, let's get our poll going!
+	else
+	{
+		// Create the poll.
+		$smcFunc['db_insert']('',
+			'{db_prefix}polls',
+			array(
+				'question' => 'string-255', 'hide_results' => 'int', 'max_votes' => 'int', 'expire_time' => 'int', 'id_member' => 'int',
+				'poster_name' => 'string-255', 'change_vote' => 'int', 'guest_vote' => 'int'
+			),
+			array(
+				$_POST['question'], $_POST['poll_hide'], $_POST['poll_max_votes'], $_POST['poll_expire'], $user_info['id'],
+				$user_info['username'], $_POST['poll_change_vote'], $_POST['poll_guest_vote'],
+			),
+			array('id_poll')
+		);
+
+		// Set the poll ID.
+		$bcinfo['id_poll'] = $smcFunc['db_insert_id']('{db_prefix}polls', 'id_poll');
+
+		// Link the poll to the topic
+		$smcFunc['db_query']('', '
+			UPDATE {db_prefix}topics
+			SET id_poll = {int:id_poll}
+			WHERE id_topic = {int:current_topic}',
+			array(
+				'current_topic' => $topic,
+				'id_poll' => $bcinfo['id_poll'],
+			)
+		);
+	}
+
+	// Get all the choices.  (no better way to remove all emptied and add previously non-existent ones.)
+	$request = $smcFunc['db_query']('', '
+		SELECT id_choice
+		FROM {db_prefix}poll_choices
+		WHERE id_poll = {int:id_poll}',
+		array(
+			'id_poll' => $bcinfo['id_poll'],
+		)
+	);
+	$choices = array();
+	while ($row = $smcFunc['db_fetch_assoc']($request))
+		$choices[] = $row['id_choice'];
+	$smcFunc['db_free_result']($request);
+
+	$delete_options = array();
+	foreach ($_POST['options'] as $k => $option)
+	{
+		// Make sure the key is numeric for sanity's sake.
+		$k = (int) $k;
+
+		// They've cleared the box.  Either they want it deleted, or it never existed.
+		if (trim($option) == '')
+		{
+			// They want it deleted.  Bye.
+			if (in_array($k, $choices))
+				$delete_options[] = $k;
+
+			// Skip the rest...
+			continue;
+		}
+
+		// Dress the option up for its big date with the database.
+		$option = $smcFunc['htmlspecialchars']($option);
+
+		// If it's already there, update it.  If it's not... add it.
+		if (in_array($k, $choices))
+			$smcFunc['db_query']('', '
+				UPDATE {db_prefix}poll_choices
+				SET label = {string:option_name}
+				WHERE id_poll = {int:id_poll}
+					AND id_choice = {int:id_choice}',
+				array(
+					'id_poll' => $bcinfo['id_poll'],
+					'id_choice' => $k,
+					'option_name' => $option,
+				)
+			);
+		else
+			$smcFunc['db_insert']('',
+				'{db_prefix}poll_choices',
+				array(
+					'id_poll' => 'int', 'id_choice' => 'int', 'label' => 'string-255', 'votes' => 'int',
+				),
+				array(
+					$bcinfo['id_poll'], $k, $option, 0,
+				),
+				array()
+			);
+	}
+
+	// I'm sorry, but... well, no one was choosing you.  Poor options, I'll put you out of your misery.
+	if (!empty($delete_options))
+	{
+		$smcFunc['db_query']('', '
+			DELETE FROM {db_prefix}log_polls
+			WHERE id_poll = {int:id_poll}
+				AND id_choice IN ({array_int:delete_options})',
+			array(
+				'delete_options' => $delete_options,
+				'id_poll' => $bcinfo['id_poll'],
+			)
+		);
+		$smcFunc['db_query']('', '
+			DELETE FROM {db_prefix}poll_choices
+			WHERE id_poll = {int:id_poll}
+				AND id_choice IN ({array_int:delete_options})',
+			array(
+				'delete_options' => $delete_options,
+				'id_poll' => $bcinfo['id_poll'],
+			)
+		);
+	}
+
+	// Shall I reset the vote count, sir?
+	if (isset($_POST['resetVoteCount']))
+	{
+		$smcFunc['db_query']('', '
+			UPDATE {db_prefix}polls
+			SET num_guest_voters = {int:no_votes}, reset_poll = {int:time}
+			WHERE id_poll = {int:id_poll}',
+			array(
+				'no_votes' => 0,
+				'id_poll' => $bcinfo['id_poll'],
+				'time' => time(),
+			)
+		);
+		$smcFunc['db_query']('', '
+			UPDATE {db_prefix}poll_choices
+			SET votes = {int:no_votes}
+			WHERE id_poll = {int:id_poll}',
+			array(
+				'no_votes' => 0,
+				'id_poll' => $bcinfo['id_poll'],
+			)
+		);
+		$smcFunc['db_query']('', '
+			DELETE FROM {db_prefix}log_polls
+			WHERE id_poll = {int:id_poll}',
+			array(
+				'id_poll' => $bcinfo['id_poll'],
+			)
+		);
+	}
+
+	// Off we go.
+	redirectexit('topic=' . $topic . '.' . $_REQUEST['start']);
+}
+
+// Remove a poll from a topic without removing the topic.
+function RemovePoll()
+{
+	global $topic, $user_info, $smcFunc;
+
+	// Make sure the topic is not empty.
+	if (empty($topic))
+		fatal_lang_error('no_access', false);
+
+	// Verify the session.
+	checkSession('get');
+
+	// Check permissions.
+	if (!allowedTo('poll_remove_any'))
+	{
+		$request = $smcFunc['db_query']('', '
+			SELECT t.id_member_started, p.id_member AS poll_starter
+			FROM {db_prefix}topics AS t
+				INNER JOIN {db_prefix}polls AS p ON (p.id_poll = t.id_poll)
+			WHERE t.id_topic = {int:current_topic}
+			LIMIT 1',
+			array(
+				'current_topic' => $topic,
+			)
+		);
+		if ($smcFunc['db_num_rows']($request) == 0)
+			fatal_lang_error('no_access', false);
+		list ($topicStarter, $pollStarter) = $smcFunc['db_fetch_row']($request);
+		$smcFunc['db_free_result']($request);
+
+		isAllowedTo('poll_remove_' . ($topicStarter == $user_info['id'] || ($pollStarter != 0 && $user_info['id'] == $pollStarter) ? 'own' : 'any'));
+	}
+
+	// Retrieve the poll ID.
+	$request = $smcFunc['db_query']('', '
+		SELECT id_poll
+		FROM {db_prefix}topics
+		WHERE id_topic = {int:current_topic}
+		LIMIT 1',
+		array(
+			'current_topic' => $topic,
+		)
+	);
+	list ($pollID) = $smcFunc['db_fetch_row']($request);
+	$smcFunc['db_free_result']($request);
+
+	// Remove all user logs for this poll.
+	$smcFunc['db_query']('', '
+		DELETE FROM {db_prefix}log_polls
+		WHERE id_poll = {int:id_poll}',
+		array(
+			'id_poll' => $pollID,
+		)
+	);
+	// Remove all poll choices.
+	$smcFunc['db_query']('', '
+		DELETE FROM {db_prefix}poll_choices
+		WHERE id_poll = {int:id_poll}',
+		array(
+			'id_poll' => $pollID,
+		)
+	);
+	// Remove the poll itself.
+	$smcFunc['db_query']('', '
+		DELETE FROM {db_prefix}polls
+		WHERE id_poll = {int:id_poll}',
+		array(
+			'id_poll' => $pollID,
+		)
+	);
+	// Finally set the topic poll ID back to 0!
+	$smcFunc['db_query']('', '
+		UPDATE {db_prefix}topics
+		SET id_poll = {int:no_poll}
+		WHERE id_topic = {int:current_topic}',
+		array(
+			'current_topic' => $topic,
+			'no_poll' => 0,
+		)
+	);
+
+	// Take the moderator back to the topic.
+	redirectexit('topic=' . $topic . '.' . $_REQUEST['start']);
+}
+
+?>
\ No newline at end of file