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|
<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb;
/**
* phpbb_visibility
* Handle fetching and setting the visibility for topics and posts
*/
class content_visibility
{
/**
* Database object
* @var \phpbb\db\driver\driver_interface
*/
protected $db;
/**
* User object
* @var \phpbb\user
*/
protected $user;
/**
* Auth object
* @var \phpbb\auth\auth
*/
protected $auth;
/**
* phpBB root path
* @var string
*/
protected $phpbb_root_path;
/**
* PHP Extension
* @var string
*/
protected $php_ext;
/**
* Constructor
*
* @param \phpbb\auth\auth $auth Auth object
* @param \phpbb\db\driver\driver_interface $db Database object
* @param \phpbb\user $user User object
* @param string $phpbb_root_path Root path
* @param string $php_ext PHP Extension
* @param string $forums_table Forums table name
* @param string $posts_table Posts table name
* @param string $topics_table Topics table name
* @param string $users_table Users table name
*/
public function __construct(\phpbb\auth\auth $auth, \phpbb\db\driver\driver_interface $db, \phpbb\user $user, $phpbb_root_path, $php_ext, $forums_table, $posts_table, $topics_table, $users_table)
{
$this->auth = $auth;
$this->db = $db;
$this->user = $user;
$this->phpbb_root_path = $phpbb_root_path;
$this->php_ext = $php_ext;
$this->forums_table = $forums_table;
$this->posts_table = $posts_table;
$this->topics_table = $topics_table;
$this->users_table = $users_table;
}
/**
* Can the current logged-in user soft-delete posts?
*
* @param $forum_id int Forum ID whose permissions to check
* @param $poster_id int Poster ID of the post in question
* @param $post_locked bool Is the post locked?
* @return bool
*/
public function can_soft_delete($forum_id, $poster_id, $post_locked)
{
if ($this->auth->acl_get('m_softdelete', $forum_id))
{
return true;
}
else if ($this->auth->acl_get('f_softdelete', $forum_id) && $poster_id == $this->user->data['user_id'] && !$post_locked)
{
return true;
}
return false;
}
/**
* Get the topics post count or the forums post/topic count based on permissions
*
* @param $mode string One of topic_posts, forum_posts or forum_topics
* @param $data array Array with the topic/forum data to calculate from
* @param $forum_id int The forum id is used for permission checks
* @return int Number of posts/topics the user can see in the topic/forum
*/
public function get_count($mode, $data, $forum_id)
{
if (!$this->auth->acl_get('m_approve', $forum_id))
{
return (int) $data[$mode . '_approved'];
}
return (int) $data[$mode . '_approved'] + (int) $data[$mode . '_unapproved'] + (int) $data[$mode . '_softdeleted'];
}
/**
* Create topic/post visibility SQL for a given forum ID
*
* Note: Read permissions are not checked.
*
* @param $mode string Either "topic" or "post"
* @param $forum_id int The forum id is used for permission checks
* @param $table_alias string Table alias to prefix in SQL queries
* @return string The appropriate combination SQL logic for topic/post_visibility
*/
public function get_visibility_sql($mode, $forum_id, $table_alias = '')
{
if ($this->auth->acl_get('m_approve', $forum_id))
{
return '1 = 1';
}
return $table_alias . $mode . '_visibility = ' . ITEM_APPROVED;
}
/**
* Create topic/post visibility SQL for a set of forums
*
* Note: Read permissions are not checked. Forums without read permissions
* should not be in $forum_ids
*
* @param $mode string Either "topic" or "post"
* @param $forum_ids array Array of forum ids which the posts/topics are limited to
* @param $table_alias string Table alias to prefix in SQL queries
* @return string The appropriate combination SQL logic for topic/post_visibility
*/
public function get_forums_visibility_sql($mode, $forum_ids = array(), $table_alias = '')
{
$where_sql = '(';
$approve_forums = array_intersect($forum_ids, array_keys($this->auth->acl_getf('m_approve', true)));
if (sizeof($approve_forums))
{
// Remove moderator forums from the rest
$forum_ids = array_diff($forum_ids, $approve_forums);
if (!sizeof($forum_ids))
{
// The user can see all posts/topics in all specified forums
return $this->db->sql_in_set($table_alias . 'forum_id', $approve_forums);
}
else
{
// Moderator can view all posts/topics in some forums
$where_sql .= $this->db->sql_in_set($table_alias . 'forum_id', $approve_forums) . ' OR ';
}
}
else
{
// The user is just a normal user
return $table_alias . $mode . '_visibility = ' . ITEM_APPROVED . '
AND ' . $this->db->sql_in_set($table_alias . 'forum_id', $forum_ids, false, true);
}
$where_sql .= '(' . $table_alias . $mode . '_visibility = ' . ITEM_APPROVED . '
AND ' . $this->db->sql_in_set($table_alias . 'forum_id', $forum_ids) . '))';
return $where_sql;
}
/**
* Create topic/post visibility SQL for all forums on the board
*
* Note: Read permissions are not checked. Forums without read permissions
* should be in $exclude_forum_ids
*
* @param $mode string Either "topic" or "post"
* @param $exclude_forum_ids array Array of forum ids which are excluded
* @param $table_alias string Table alias to prefix in SQL queries
* @return string The appropriate combination SQL logic for topic/post_visibility
*/
public function get_global_visibility_sql($mode, $exclude_forum_ids = array(), $table_alias = '')
{
$where_sqls = array();
$approve_forums = array_diff(array_keys($this->auth->acl_getf('m_approve', true)), $exclude_forum_ids);
if (sizeof($exclude_forum_ids))
{
$where_sqls[] = '(' . $this->db->sql_in_set($table_alias . 'forum_id', $exclude_forum_ids, true) . '
AND ' . $table_alias . $mode . '_visibility = ' . ITEM_APPROVED . ')';
}
else
{
$where_sqls[] = $table_alias . $mode . '_visibility = ' . ITEM_APPROVED;
}
if (sizeof($approve_forums))
{
$where_sqls[] = $this->db->sql_in_set($table_alias . 'forum_id', $approve_forums);
return '(' . implode(' OR ', $where_sqls) . ')';
}
// There is only one element, so we just return that one
return $where_sqls[0];
}
/**
* Change visibility status of one post or all posts of a topic
*
* @param $visibility int Element of {ITEM_APPROVED, ITEM_DELETED, ITEM_REAPPROVE}
* @param $post_id mixed Post ID or array of post IDs to act on,
* if it is empty, all posts of topic_id will be modified
* @param $topic_id int Topic where $post_id is found
* @param $forum_id int Forum where $topic_id is found
* @param $user_id int User performing the action
* @param $time int Timestamp when the action is performed
* @param $reason string Reason why the visibility was changed.
* @param $is_starter bool Is this the first post of the topic changed?
* @param $is_latest bool Is this the last post of the topic changed?
* @param $limit_visibility mixed Limit updating per topic_id to a certain visibility
* @param $limit_delete_time mixed Limit updating per topic_id to a certain deletion time
* @return array Changed post data, empty array if an error occurred.
*/
public function set_post_visibility($visibility, $post_id, $topic_id, $forum_id, $user_id, $time, $reason, $is_starter, $is_latest, $limit_visibility = false, $limit_delete_time = false)
{
if (!in_array($visibility, array(ITEM_APPROVED, ITEM_DELETED, ITEM_REAPPROVE)))
{
return array();
}
if ($post_id)
{
if (is_array($post_id))
{
$where_sql = $this->db->sql_in_set('post_id', array_map('intval', $post_id));
}
else
{
$where_sql = 'post_id = ' . (int) $post_id;
}
$where_sql .= ' AND topic_id = ' . (int) $topic_id;
}
else
{
$where_sql = 'topic_id = ' . (int) $topic_id;
// Limit the posts to a certain visibility and deletion time
// This allows us to only restore posts, that were approved
// when the topic got soft deleted. So previous soft deleted
// and unapproved posts are still soft deleted/unapproved
if ($limit_visibility !== false)
{
$where_sql .= ' AND post_visibility = ' . (int) $limit_visibility;
}
if ($limit_delete_time !== false)
{
$where_sql .= ' AND post_delete_time = ' . (int) $limit_delete_time;
}
}
$sql = 'SELECT poster_id, post_id, post_postcount, post_visibility
FROM ' . $this->posts_table . '
WHERE ' . $where_sql;
$result = $this->db->sql_query($sql);
$post_ids = $poster_postcounts = $postcounts = $postcount_visibility = array();
while ($row = $this->db->sql_fetchrow($result))
{
$post_ids[] = (int) $row['post_id'];
if ($row['post_visibility'] != $visibility)
{
if ($row['post_postcount'] && !isset($poster_postcounts[(int) $row['poster_id']]))
{
$poster_postcounts[(int) $row['poster_id']] = 1;
}
else if ($row['post_postcount'])
{
$poster_postcounts[(int) $row['poster_id']]++;
}
if (!isset($postcount_visibility[$row['post_visibility']]))
{
$postcount_visibility[$row['post_visibility']] = 1;
}
else
{
$postcount_visibility[$row['post_visibility']]++;
}
}
}
$this->db->sql_freeresult($result);
if (empty($post_ids))
{
return array();
}
$data = array(
'post_visibility' => (int) $visibility,
'post_delete_user' => (int) $user_id,
'post_delete_time' => ((int) $time) ?: time(),
'post_delete_reason' => truncate_string($reason, 255, 255, false),
);
$sql = 'UPDATE ' . $this->posts_table . '
SET ' . $this->db->sql_build_array('UPDATE', $data) . '
WHERE ' . $this->db->sql_in_set('post_id', $post_ids);
$this->db->sql_query($sql);
// Group the authors by post count, to reduce the number of queries
foreach ($poster_postcounts as $poster_id => $num_posts)
{
$postcounts[$num_posts][] = $poster_id;
}
// Update users postcounts
foreach ($postcounts as $num_posts => $poster_ids)
{
if (in_array($visibility, array(ITEM_REAPPROVE, ITEM_DELETED)))
{
$sql = 'UPDATE ' . $this->users_table . '
SET user_posts = 0
WHERE ' . $this->db->sql_in_set('user_id', $poster_ids) . '
AND user_posts < ' . $num_posts;
$this->db->sql_query($sql);
$sql = 'UPDATE ' . $this->users_table . '
SET user_posts = user_posts - ' . $num_posts . '
WHERE ' . $this->db->sql_in_set('user_id', $poster_ids) . '
AND user_posts >= ' . $num_posts;
$this->db->sql_query($sql);
}
else
{
$sql = 'UPDATE ' . $this->users_table . '
SET user_posts = user_posts + ' . $num_posts . '
WHERE ' . $this->db->sql_in_set('user_id', $poster_ids);
$this->db->sql_query($sql);
}
}
$update_topic_postcount = true;
// Sync the first/last topic information if needed
if (!$is_starter && $is_latest)
{
if (!function_exists('update_post_information'))
{
include($this->phpbb_root_path . 'includes/functions_posting.' . $this->php_ext);
}
// update_post_information can only update the last post info ...
if ($topic_id)
{
update_post_information('topic', $topic_id, false);
}
if ($forum_id)
{
update_post_information('forum', $forum_id, false);
}
}
else if ($is_starter && $topic_id)
{
if (!function_exists('sync'))
{
include($this->phpbb_root_path . 'includes/functions_admin.' . $this->php_ext);
}
// ... so we need to use sync, if the first post is changed.
// The forum is resynced recursive by sync() itself.
sync('topic', 'topic_id', $topic_id, true);
// sync recalculates the topic replies and forum posts by itself, so we don't do that.
$update_topic_postcount = false;
}
$topic_update_array = array();
// Update the topic's reply count and the forum's post count
if ($update_topic_postcount)
{
$field_alias = array(
ITEM_APPROVED => 'posts_approved',
ITEM_UNAPPROVED => 'posts_unapproved',
ITEM_DELETED => 'posts_softdeleted',
ITEM_REAPPROVE => 'posts_unapproved',
);
$cur_posts = array_fill_keys($field_alias, 0);
foreach ($postcount_visibility as $post_visibility => $visibility_posts)
{
$cur_posts[$field_alias[(int) $post_visibility]] += $visibility_posts;
}
$sql_ary = array();
$recipient_field = $field_alias[$visibility];
foreach ($cur_posts as $field => $count)
{
// Decrease the count for the old statuses.
if ($count && $field != $recipient_field)
{
$sql_ary[$field] = " - $count";
}
}
// Add up the count from all statuses excluding the recipient status.
$count_increase = array_sum(array_diff($cur_posts, array($recipient_field)));
if ($count_increase)
{
$sql_ary[$recipient_field] = " + $count_increase";
}
if (sizeof($sql_ary))
{
$forum_sql = array();
foreach ($sql_ary as $field => $value_change)
{
$topic_update_array[] = 'topic_' . $field . ' = topic_' . $field . $value_change;
$forum_sql[] = 'forum_' . $field . ' = forum_' . $field . $value_change;
}
$sql = 'UPDATE ' . $this->forums_table . '
SET ' . implode(', ', $forum_sql) . '
WHERE forum_id = ' . (int) $forum_id;
$this->db->sql_query($sql);
}
}
if ($post_id)
{
$sql = 'SELECT 1 AS has_attachments
FROM ' . POSTS_TABLE . '
WHERE topic_id = ' . (int) $topic_id . '
AND post_attachment = 1
AND post_visibility = ' . ITEM_APPROVED . '
AND ' . $this->db->sql_in_set('post_id', $post_id, true);
$result = $this->db->sql_query_limit($sql, 1);
$has_attachment = (bool) $this->db->sql_fetchfield('has_attachments');
$this->db->sql_freeresult($result);
if ($has_attachment && $visibility == ITEM_APPROVED)
{
$topic_update_array[] = 'topic_attachment = 1';
}
else if (!$has_attachment && $visibility != ITEM_APPROVED)
{
$topic_update_array[] = 'topic_attachment = 0';
}
}
if (!empty($topic_update_array))
{
// Update the number for replies and posts, and update the attachments flag
$sql = 'UPDATE ' . $this->topics_table . '
SET ' . implode(', ', $topic_update_array) . '
WHERE topic_id = ' . (int) $topic_id;
$this->db->sql_query($sql);
}
return $data;
}
/**
* Set topic visibility
*
* Allows approving (which is akin to undeleting/restore) or soft deleting an entire topic.
* Calls set_post_visibility as needed.
*
* Note: By default, when a soft deleted topic is restored. Only posts that
* were approved at the time of soft deleting, are being restored.
* Same applies to soft deleting. Only approved posts will be marked
* as soft deleted.
* If you want to update all posts, use the force option.
*
* @param $visibility int Element of {ITEM_APPROVED, ITEM_DELETED, ITEM_REAPPROVE}
* @param $topic_id mixed Topic ID to act on
* @param $forum_id int Forum where $topic_id is found
* @param $user_id int User performing the action
* @param $time int Timestamp when the action is performed
* @param $reason string Reason why the visibilty was changed.
* @param $force_update_all bool Force to update all posts within the topic
* @return array Changed topic data, empty array if an error occured.
*/
public function set_topic_visibility($visibility, $topic_id, $forum_id, $user_id, $time, $reason, $force_update_all = false)
{
if (!in_array($visibility, array(ITEM_APPROVED, ITEM_DELETED, ITEM_REAPPROVE)))
{
return array();
}
if (!$force_update_all)
{
$sql = 'SELECT topic_visibility, topic_delete_time
FROM ' . $this->topics_table . '
WHERE topic_id = ' . (int) $topic_id;
$result = $this->db->sql_query($sql);
$original_topic_data = $this->db->sql_fetchrow($result);
$this->db->sql_freeresult($result);
if (!$original_topic_data)
{
// The topic does not exist...
return array();
}
}
// Note, we do not set a reason for the posts, just for the topic
$data = array(
'topic_visibility' => (int) $visibility,
'topic_delete_user' => (int) $user_id,
'topic_delete_time' => ((int) $time) ?: time(),
'topic_delete_reason' => truncate_string($reason, 255, 255, false),
);
$sql = 'UPDATE ' . $this->topics_table . '
SET ' . $this->db->sql_build_array('UPDATE', $data) . '
WHERE topic_id = ' . (int) $topic_id;
$this->db->sql_query($sql);
if (!$this->db->sql_affectedrows())
{
return array();
}
if (!$force_update_all && $original_topic_data['topic_delete_time'] && $original_topic_data['topic_visibility'] == ITEM_DELETED && $visibility == ITEM_APPROVED)
{
// If we're restoring a topic we only restore posts, that were soft deleted through the topic soft deletion.
$this->set_post_visibility($visibility, false, $topic_id, $forum_id, $user_id, $time, '', true, true, $original_topic_data['topic_visibility'], $original_topic_data['topic_delete_time']);
}
else if (!$force_update_all && $original_topic_data['topic_visibility'] == ITEM_APPROVED && $visibility == ITEM_DELETED)
{
// If we're soft deleting a topic we only mark approved posts as soft deleted.
$this->set_post_visibility($visibility, false, $topic_id, $forum_id, $user_id, $time, '', true, true, $original_topic_data['topic_visibility']);
}
else
{
$this->set_post_visibility($visibility, false, $topic_id, $forum_id, $user_id, $time, '', true, true);
}
return $data;
}
/**
* Add post to topic and forum statistics
*
* @param $data array Contains information from the topics table about given topic
* @param $sql_data array Populated with the SQL changes, may be empty at call time
* @return null
*/
public function add_post_to_statistic($data, &$sql_data)
{
$sql_data[$this->topics_table] = (($sql_data[$this->topics_table]) ? $sql_data[$this->topics_table] . ', ' : '') . 'topic_posts_approved = topic_posts_approved + 1';
$sql_data[$this->forums_table] = (($sql_data[$this->forums_table]) ? $sql_data[$this->forums_table] . ', ' : '') . 'forum_posts_approved = forum_posts_approved + 1';
if ($data['post_postcount'])
{
$sql_data[$this->users_table] = (($sql_data[$this->users_table]) ? $sql_data[$this->users_table] . ', ' : '') . 'user_posts = user_posts + 1';
}
set_config_count('num_posts', 1, true);
}
/**
* Remove post from topic and forum statistics
*
* @param $data array Contains information from the topics table about given topic
* @param $sql_data array Populated with the SQL changes, may be empty at call time
* @return null
*/
public function remove_post_from_statistic($data, &$sql_data)
{
$sql_data[$this->topics_table] = ((!empty($sql_data[$this->topics_table])) ? $sql_data[$this->topics_table] . ', ' : '') . 'topic_posts_approved = topic_posts_approved - 1';
$sql_data[$this->forums_table] = ((!empty($sql_data[$this->forums_table])) ? $sql_data[$this->forums_table] . ', ' : '') . 'forum_posts_approved = forum_posts_approved - 1';
if ($data['post_postcount'])
{
$sql_data[$this->users_table] = ((!empty($sql_data[$this->users_table])) ? $sql_data[$this->users_table] . ', ' : '') . 'user_posts = user_posts - 1';
}
set_config_count('num_posts', -1, true);
}
/**
* Remove topic from forum statistics
*
* @param $topic_id int The topic to act on
* @param $forum_id int Forum where the topic is found
* @param $topic_row array Contains information from the topic, may be empty at call time
* @param $sql_data array Populated with the SQL changes, may be empty at call time
* @return null
*/
public function remove_topic_from_statistic($topic_id, $forum_id, &$topic_row, &$sql_data)
{
// Do we need to grab some topic informations?
if (!sizeof($topic_row))
{
$sql = 'SELECT topic_type, topic_posts_approved, topic_posts_unapproved, topic_posts_softdeleted, topic_visibility
FROM ' . $this->topics_table . '
WHERE topic_id = ' . (int) $topic_id;
$result = $this->db->sql_query($sql);
$topic_row = $this->db->sql_fetchrow($result);
$this->db->sql_freeresult($result);
}
// If this is an edited topic or the first post the topic gets completely disapproved later on...
$sql_data[$this->forums_table] = (($sql_data[$this->forums_table]) ? $sql_data[$this->forums_table] . ', ' : '') . 'forum_topics_approved = forum_topics_approved - 1';
$sql_data[$this->forums_table] .= ', forum_posts_approved = forum_posts_approved - ' . $topic_row['topic_posts_approved'];
$sql_data[$this->forums_table] .= ', forum_posts_unapproved = forum_posts_unapproved - ' . $topic_row['topic_posts_unapproved'];
$sql_data[$this->forums_table] .= ', forum_posts_softdeleted = forum_posts_softdeleted - ' . $topic_row['topic_posts_softdeleted'];
set_config_count('num_topics', -1, true);
set_config_count('num_posts', $topic_row['topic_posts_approved'] * (-1), true);
// Get user post count information
$sql = 'SELECT poster_id, COUNT(post_id) AS num_posts
FROM ' . $this->posts_table . '
WHERE topic_id = ' . (int) $topic_id . '
AND post_postcount = 1
AND post_visibility = ' . ITEM_APPROVED . '
GROUP BY poster_id';
$result = $this->db->sql_query($sql);
$postcounts = array();
while ($row = $this->db->sql_fetchrow($result))
{
$postcounts[(int) $row['num_posts']][] = (int) $row['poster_id'];
}
$this->db->sql_freeresult($result);
// Decrement users post count
foreach ($postcounts as $num_posts => $poster_ids)
{
$sql = 'UPDATE ' . $this->users_table . '
SET user_posts = 0
WHERE user_posts < ' . $num_posts . '
AND ' . $this->db->sql_in_set('user_id', $poster_ids);
$this->db->sql_query($sql);
$sql = 'UPDATE ' . $this->users_table . '
SET user_posts = user_posts - ' . $num_posts . '
WHERE user_posts >= ' . $num_posts . '
AND ' . $this->db->sql_in_set('user_id', $poster_ids);
$this->db->sql_query($sql);
}
}
}
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