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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\auth;
/**
* Permission/Auth class
*/
class auth
{
var $acl = array();
var $cache = array();
var $acl_options = array();
var $acl_forum_ids = false;
/**
* Init permissions
*/
function acl(&$userdata)
{
global $db, $cache;
$this->acl = $this->cache = $this->acl_options = array();
$this->acl_forum_ids = false;
if (($this->acl_options = $cache->get('_acl_options')) === false)
{
$sql = 'SELECT auth_option_id, auth_option, is_global, is_local
FROM ' . ACL_OPTIONS_TABLE . '
ORDER BY auth_option_id';
$result = $db->sql_query($sql);
$global = $local = 0;
$this->acl_options = array();
while ($row = $db->sql_fetchrow($result))
{
if ($row['is_global'])
{
$this->acl_options['global'][$row['auth_option']] = $global++;
}
if ($row['is_local'])
{
$this->acl_options['local'][$row['auth_option']] = $local++;
}
$this->acl_options['id'][$row['auth_option']] = (int) $row['auth_option_id'];
$this->acl_options['option'][(int) $row['auth_option_id']] = $row['auth_option'];
}
$db->sql_freeresult($result);
$cache->put('_acl_options', $this->acl_options);
}
if (!trim($userdata['user_permissions']))
{
$this->acl_cache($userdata);
}
// Fill ACL array
$this->_fill_acl($userdata['user_permissions']);
// Verify bitstring length with options provided...
$renew = false;
$global_length = sizeof($this->acl_options['global']);
$local_length = sizeof($this->acl_options['local']);
// Specify comparing length (bitstring is padded to 31 bits)
$global_length = ($global_length % 31) ? ($global_length - ($global_length % 31) + 31) : $global_length;
$local_length = ($local_length % 31) ? ($local_length - ($local_length % 31) + 31) : $local_length;
// You thought we are finished now? Noooo... now compare them.
foreach ($this->acl as $forum_id => $bitstring)
{
if (($forum_id && strlen($bitstring) != $local_length) || (!$forum_id && strlen($bitstring) != $global_length))
{
$renew = true;
break;
}
}
// If a bitstring within the list does not match the options, we have a user with incorrect permissions set and need to renew them
if ($renew)
{
$this->acl_cache($userdata);
$this->_fill_acl($userdata['user_permissions']);
}
return;
}
/**
* Retrieves data wanted by acl function from the database for the
* specified user.
*
* @param int $user_id User ID
* @return array User attributes
*/
public function obtain_user_data($user_id)
{
global $db;
$sql = 'SELECT user_id, username, user_permissions, user_type
FROM ' . USERS_TABLE . '
WHERE user_id = ' . $user_id;
$result = $db->sql_query($sql);
$user_data = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
return $user_data;
}
/**
* Fill ACL array with relevant bitstrings from user_permissions column
* @access private
*/
function _fill_acl($user_permissions)
{
$seq_cache = array();
$this->acl = array();
$user_permissions = explode("\n", $user_permissions);
foreach ($user_permissions as $f => $seq)
{
if ($seq)
{
$i = 0;
if (!isset($this->acl[$f]))
{
$this->acl[$f] = '';
}
while ($subseq = substr($seq, $i, 6))
{
if (isset($seq_cache[$subseq]))
{
$converted = $seq_cache[$subseq];
}
else
{
$converted = $seq_cache[$subseq] = str_pad(base_convert($subseq, 36, 2), 31, 0, STR_PAD_LEFT);
}
// We put the original bitstring into the acl array
$this->acl[$f] .= $converted;
$i += 6;
}
}
}
}
/**
* Look up an option
* if the option is prefixed with !, then the result becomes negated
*
* If a forum id is specified the local option will be combined with a global option if one exist.
* If a forum id is not specified, only the global option will be checked.
*/
function acl_get($opt, $f = 0)
{
$negate = false;
if (strpos($opt, '!') === 0)
{
$negate = true;
$opt = substr($opt, 1);
}
if (!isset($this->cache[$f][$opt]))
{
// We combine the global/local option with an OR because some options are global and local.
// If the user has the global permission the local one is true too and vice versa
$this->cache[$f][$opt] = false;
// Is this option a global permission setting?
if (isset($this->acl_options['global'][$opt]))
{
if (isset($this->acl[0]))
{
$this->cache[$f][$opt] = $this->acl[0][$this->acl_options['global'][$opt]];
}
}
// Is this option a local permission setting?
// But if we check for a global option only, we won't combine the options...
if ($f != 0 && isset($this->acl_options['local'][$opt]))
{
if (isset($this->acl[$f]) && isset($this->acl[$f][$this->acl_options['local'][$opt]]))
{
$this->cache[$f][$opt] |= $this->acl[$f][$this->acl_options['local'][$opt]];
}
}
}
// Founder always has all global options set to true...
return ($negate) ? !$this->cache[$f][$opt] : $this->cache[$f][$opt];
}
/**
* Get forums with the specified permission setting
* if the option is prefixed with !, then the result becomes negated
*
* @param bool $clean set to true if only values needs to be returned which are set/unset
*/
function acl_getf($opt, $clean = false)
{
$acl_f = array();
$negate = false;
if (strpos($opt, '!') === 0)
{
$negate = true;
$opt = substr($opt, 1);
}
// If we retrieve a list of forums not having permissions in, we need to get every forum_id
if ($negate)
{
if ($this->acl_forum_ids === false)
{
global $db;
$sql = 'SELECT forum_id
FROM ' . FORUMS_TABLE;
if (sizeof($this->acl))
{
$sql .= ' WHERE ' . $db->sql_in_set('forum_id', array_keys($this->acl), true);
}
$result = $db->sql_query($sql);
$this->acl_forum_ids = array();
while ($row = $db->sql_fetchrow($result))
{
$this->acl_forum_ids[] = $row['forum_id'];
}
$db->sql_freeresult($result);
}
}
if (isset($this->acl_options['local'][$opt]))
{
foreach ($this->acl as $f => $bitstring)
{
// Skip global settings
if (!$f)
{
continue;
}
$allowed = (!isset($this->cache[$f][$opt])) ? $this->acl_get($opt, $f) : $this->cache[$f][$opt];
if (!$clean)
{
$acl_f[$f][$opt] = ($negate) ? !$allowed : $allowed;
}
else
{
if (($negate && !$allowed) || (!$negate && $allowed))
{
$acl_f[$f][$opt] = 1;
}
}
}
}
// If we get forum_ids not having this permission, we need to fill the remaining parts
if ($negate && sizeof($this->acl_forum_ids))
{
foreach ($this->acl_forum_ids as $f)
{
$acl_f[$f][$opt] = 1;
}
}
return $acl_f;
}
/**
* Get local permission state for any forum.
*
* Returns true if user has the permission in one or more forums, false if in no forum.
* If global option is checked it returns the global state (same as acl_get($opt))
* Local option has precedence...
*/
function acl_getf_global($opt)
{
if (is_array($opt))
{
// evaluates to true as soon as acl_getf_global is true for one option
foreach ($opt as $check_option)
{
if ($this->acl_getf_global($check_option))
{
return true;
}
}
return false;
}
if (isset($this->acl_options['local'][$opt]))
{
foreach ($this->acl as $f => $bitstring)
{
// Skip global settings
if (!$f)
{
continue;
}
// as soon as the user has any permission we're done so return true
if ((!isset($this->cache[$f][$opt])) ? $this->acl_get($opt, $f) : $this->cache[$f][$opt])
{
return true;
}
}
}
else if (isset($this->acl_options['global'][$opt]))
{
return $this->acl_get($opt);
}
return false;
}
/**
* Get permission settings (more than one)
*/
function acl_gets()
{
$args = func_get_args();
$f = array_pop($args);
if (!is_numeric($f))
{
$args[] = $f;
$f = 0;
}
// alternate syntax: acl_gets(array('m_', 'a_'), $forum_id)
if (is_array($args[0]))
{
$args = $args[0];
}
$acl = 0;
foreach ($args as $opt)
{
$acl |= $this->acl_get($opt, $f);
}
return $acl;
}
/**
* Get permission listing based on user_id/options/forum_ids
*
* Be careful when using this function with permissions a_, m_, u_ and f_ !
* It may not work correctly. When a user group grants an a_* permission,
* e.g. a_foo, but the user's a_foo permission is set to "Never", then
* the user does not in fact have the a_ permission.
* But the user will still be listed as having the a_ permission.
*
* For more information see: http://tracker.phpbb.com/browse/PHPBB3-10252
*/
function acl_get_list($user_id = false, $opts = false, $forum_id = false)
{
if ($user_id !== false && !is_array($user_id) && $opts === false && $forum_id === false)
{
$hold_ary = array($user_id => $this->acl_raw_data_single_user($user_id));
}
else
{
$hold_ary = $this->acl_raw_data($user_id, $opts, $forum_id);
}
$auth_ary = array();
foreach ($hold_ary as $user_id => $forum_ary)
{
foreach ($forum_ary as $forum_id => $auth_option_ary)
{
foreach ($auth_option_ary as $auth_option => $auth_setting)
{
if ($auth_setting)
{
$auth_ary[$forum_id][$auth_option][] = $user_id;
}
}
}
}
return $auth_ary;
}
/**
* Cache data to user_permissions row
*/
function acl_cache(&$userdata)
{
global $db;
// Empty user_permissions
$userdata['user_permissions'] = '';
$hold_ary = $this->acl_raw_data_single_user($userdata['user_id']);
// Key 0 in $hold_ary are global options, all others are forum_ids
// If this user is founder we're going to force fill the admin options ...
if ($userdata['user_type'] == USER_FOUNDER)
{
foreach ($this->acl_options['global'] as $opt => $id)
{
if (strpos($opt, 'a_') === 0)
{
$hold_ary[0][$this->acl_options['id'][$opt]] = ACL_YES;
}
}
}
$hold_str = $this->build_bitstring($hold_ary);
if ($hold_str)
{
$userdata['user_permissions'] = $hold_str;
$sql = 'UPDATE ' . USERS_TABLE . "
SET user_permissions = '" . $db->sql_escape($userdata['user_permissions']) . "',
user_perm_from = 0
WHERE user_id = " . $userdata['user_id'];
$db->sql_query($sql);
}
return;
}
/**
* Build bitstring from permission set
*/
function build_bitstring(&$hold_ary)
{
$hold_str = '';
if (sizeof($hold_ary))
{
ksort($hold_ary);
$last_f = 0;
foreach ($hold_ary as $f => $auth_ary)
{
$ary_key = (!$f) ? 'global' : 'local';
$bitstring = array();
foreach ($this->acl_options[$ary_key] as $opt => $id)
{
if (isset($auth_ary[$this->acl_options['id'][$opt]]))
{
$bitstring[$id] = $auth_ary[$this->acl_options['id'][$opt]];
$option_key = substr($opt, 0, strpos($opt, '_') + 1);
// If one option is allowed, the global permission for this option has to be allowed too
// example: if the user has the a_ permission this means he has one or more a_* permissions
if ($auth_ary[$this->acl_options['id'][$opt]] == ACL_YES && (!isset($bitstring[$this->acl_options[$ary_key][$option_key]]) || $bitstring[$this->acl_options[$ary_key][$option_key]] == ACL_NEVER))
{
$bitstring[$this->acl_options[$ary_key][$option_key]] = ACL_YES;
}
}
else
{
$bitstring[$id] = ACL_NEVER;
}
}
// Now this bitstring defines the permission setting for the current forum $f (or global setting)
$bitstring = implode('', $bitstring);
// The line number indicates the id, therefore we have to add empty lines for those ids not present
$hold_str .= str_repeat("\n", $f - $last_f);
// Convert bitstring for storage - we do not use binary/bytes because PHP's string functions are not fully binary safe
for ($i = 0, $bit_length = strlen($bitstring); $i < $bit_length; $i += 31)
{
$hold_str .= str_pad(base_convert(str_pad(substr($bitstring, $i, 31), 31, 0, STR_PAD_RIGHT), 2, 36), 6, 0, STR_PAD_LEFT);
}
$last_f = $f;
}
unset($bitstring);
$hold_str = rtrim($hold_str);
}
return $hold_str;
}
/**
* Clear one or all users cached permission settings
*/
function acl_clear_prefetch($user_id = false)
{
global $db, $cache;
// Rebuild options cache
$cache->destroy('_role_cache');
$sql = 'SELECT *
FROM ' . ACL_ROLES_DATA_TABLE . '
ORDER BY role_id ASC';
$result = $db->sql_query($sql);
$this->role_cache = array();
while ($row = $db->sql_fetchrow($result))
{
$this->role_cache[$row['role_id']][$row['auth_option_id']] = (int) $row['auth_setting'];
}
$db->sql_freeresult($result);
foreach ($this->role_cache as $role_id => $role_options)
{
$this->role_cache[$role_id] = serialize($role_options);
}
$cache->put('_role_cache', $this->role_cache);
// Now empty user permissions
$where_sql = '';
if ($user_id !== false)
{
$user_id = (!is_array($user_id)) ? $user_id = array((int) $user_id) : array_map('intval', $user_id);
$where_sql = ' WHERE ' . $db->sql_in_set('user_id', $user_id);
}
$sql = 'UPDATE ' . USERS_TABLE . "
SET user_permissions = '',
user_perm_from = 0
$where_sql";
$db->sql_query($sql);
return;
}
/**
* Get assigned roles
*/
function acl_role_data($user_type, $role_type, $ug_id = false, $forum_id = false)
{
global $db;
$roles = array();
$sql_id = ($user_type == 'user') ? 'user_id' : 'group_id';
$sql_ug = ($ug_id !== false) ? ((!is_array($ug_id)) ? "AND a.$sql_id = $ug_id" : 'AND ' . $db->sql_in_set("a.$sql_id", $ug_id)) : '';
$sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? "AND a.forum_id = $forum_id" : 'AND ' . $db->sql_in_set('a.forum_id', $forum_id)) : '';
// Grab assigned roles...
$sql = 'SELECT a.auth_role_id, a.' . $sql_id . ', a.forum_id
FROM ' . (($user_type == 'user') ? ACL_USERS_TABLE : ACL_GROUPS_TABLE) . ' a, ' . ACL_ROLES_TABLE . " r
WHERE a.auth_role_id = r.role_id
AND r.role_type = '" . $db->sql_escape($role_type) . "'
$sql_ug
$sql_forum
ORDER BY r.role_order ASC";
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
$roles[$row[$sql_id]][$row['forum_id']] = $row['auth_role_id'];
}
$db->sql_freeresult($result);
return $roles;
}
/**
* Get raw acl data based on user/option/forum
*/
function acl_raw_data($user_id = false, $opts = false, $forum_id = false)
{
global $db;
$sql_user = ($user_id !== false) ? ((!is_array($user_id)) ? 'user_id = ' . (int) $user_id : $db->sql_in_set('user_id', array_map('intval', $user_id))) : '';
$sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? 'AND a.forum_id = ' . (int) $forum_id : 'AND ' . $db->sql_in_set('a.forum_id', array_map('intval', $forum_id))) : '';
$sql_opts = $sql_opts_select = $sql_opts_from = '';
$hold_ary = array();
if ($opts !== false)
{
$sql_opts_select = ', ao.auth_option';
$sql_opts_from = ', ' . ACL_OPTIONS_TABLE . ' ao';
$this->build_auth_option_statement('ao.auth_option', $opts, $sql_opts);
}
$sql_ary = array();
// Grab non-role settings - user-specific
$sql_ary[] = 'SELECT a.user_id, a.forum_id, a.auth_setting, a.auth_option_id' . $sql_opts_select . '
FROM ' . ACL_USERS_TABLE . ' a' . $sql_opts_from . '
WHERE a.auth_role_id = 0 ' .
(($sql_opts_from) ? 'AND a.auth_option_id = ao.auth_option_id ' : '') .
(($sql_user) ? 'AND a.' . $sql_user : '') . "
$sql_forum
$sql_opts";
// Now the role settings - user-specific
$sql_ary[] = 'SELECT a.user_id, a.forum_id, r.auth_option_id, r.auth_setting, r.auth_option_id' . $sql_opts_select . '
FROM ' . ACL_USERS_TABLE . ' a, ' . ACL_ROLES_DATA_TABLE . ' r' . $sql_opts_from . '
WHERE a.auth_role_id = r.role_id ' .
(($sql_opts_from) ? 'AND r.auth_option_id = ao.auth_option_id ' : '') .
(($sql_user) ? 'AND a.' . $sql_user : '') . "
$sql_forum
$sql_opts";
foreach ($sql_ary as $sql)
{
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
$option = ($sql_opts_select) ? $row['auth_option'] : $this->acl_options['option'][$row['auth_option_id']];
$hold_ary[$row['user_id']][$row['forum_id']][$option] = $row['auth_setting'];
}
$db->sql_freeresult($result);
}
$sql_ary = array();
// Now grab group settings - non-role specific...
$sql_ary[] = 'SELECT ug.user_id, a.forum_id, a.auth_setting, a.auth_option_id' . $sql_opts_select . '
FROM ' . ACL_GROUPS_TABLE . ' a, ' . USER_GROUP_TABLE . ' ug, ' . GROUPS_TABLE . ' g' . $sql_opts_from . '
WHERE a.auth_role_id = 0 ' .
(($sql_opts_from) ? 'AND a.auth_option_id = ao.auth_option_id ' : '') . '
AND a.group_id = ug.group_id
AND g.group_id = ug.group_id
AND ug.user_pending = 0
AND NOT (ug.group_leader = 1 AND g.group_skip_auth = 1)
' . (($sql_user) ? 'AND ug.' . $sql_user : '') . "
$sql_forum
$sql_opts";
// Now grab group settings - role specific...
$sql_ary[] = 'SELECT ug.user_id, a.forum_id, r.auth_setting, r.auth_option_id' . $sql_opts_select . '
FROM ' . ACL_GROUPS_TABLE . ' a, ' . USER_GROUP_TABLE . ' ug, ' . GROUPS_TABLE . ' g, ' . ACL_ROLES_DATA_TABLE . ' r' . $sql_opts_from . '
WHERE a.auth_role_id = r.role_id ' .
(($sql_opts_from) ? 'AND r.auth_option_id = ao.auth_option_id ' : '') . '
AND a.group_id = ug.group_id
AND g.group_id = ug.group_id
AND ug.user_pending = 0
AND NOT (ug.group_leader = 1 AND g.group_skip_auth = 1)
' . (($sql_user) ? 'AND ug.' . $sql_user : '') . "
$sql_forum
$sql_opts";
foreach ($sql_ary as $sql)
{
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
$option = ($sql_opts_select) ? $row['auth_option'] : $this->acl_options['option'][$row['auth_option_id']];
if (!isset($hold_ary[$row['user_id']][$row['forum_id']][$option]) || (isset($hold_ary[$row['user_id']][$row['forum_id']][$option]) && $hold_ary[$row['user_id']][$row['forum_id']][$option] != ACL_NEVER))
{
$hold_ary[$row['user_id']][$row['forum_id']][$option] = $row['auth_setting'];
// If we detect ACL_NEVER, we will unset the flag option (within building the bitstring it is correctly set again)
if ($row['auth_setting'] == ACL_NEVER)
{
$flag = substr($option, 0, strpos($option, '_') + 1);
if (isset($hold_ary[$row['user_id']][$row['forum_id']][$flag]) && $hold_ary[$row['user_id']][$row['forum_id']][$flag] == ACL_YES)
{
unset($hold_ary[$row['user_id']][$row['forum_id']][$flag]);
/* if (in_array(ACL_YES, $hold_ary[$row['user_id']][$row['forum_id']]))
{
$hold_ary[$row['user_id']][$row['forum_id']][$flag] = ACL_YES;
}
*/
}
}
}
}
$db->sql_freeresult($result);
}
return $hold_ary;
}
/**
* Get raw user based permission settings
*/
function acl_user_raw_data($user_id = false, $opts = false, $forum_id = false)
{
global $db;
$sql_user = ($user_id !== false) ? ((!is_array($user_id)) ? 'user_id = ' . (int) $user_id : $db->sql_in_set('user_id', array_map('intval', $user_id))) : '';
$sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? 'AND a.forum_id = ' . (int) $forum_id : 'AND ' . $db->sql_in_set('a.forum_id', array_map('intval', $forum_id))) : '';
$sql_opts = '';
$hold_ary = $sql_ary = array();
if ($opts !== false)
{
$this->build_auth_option_statement('ao.auth_option', $opts, $sql_opts);
}
// Grab user settings - non-role specific...
$sql_ary[] = 'SELECT a.user_id, a.forum_id, a.auth_setting, a.auth_option_id, ao.auth_option
FROM ' . ACL_USERS_TABLE . ' a, ' . ACL_OPTIONS_TABLE . ' ao
WHERE a.auth_role_id = 0
AND a.auth_option_id = ao.auth_option_id ' .
(($sql_user) ? 'AND a.' . $sql_user : '') . "
$sql_forum
$sql_opts
ORDER BY a.forum_id, ao.auth_option";
// Now the role settings - user-specific
$sql_ary[] = 'SELECT a.user_id, a.forum_id, r.auth_option_id, r.auth_setting, r.auth_option_id, ao.auth_option
FROM ' . ACL_USERS_TABLE . ' a, ' . ACL_ROLES_DATA_TABLE . ' r, ' . ACL_OPTIONS_TABLE . ' ao
WHERE a.auth_role_id = r.role_id
AND r.auth_option_id = ao.auth_option_id ' .
(($sql_user) ? 'AND a.' . $sql_user : '') . "
$sql_forum
$sql_opts
ORDER BY a.forum_id, ao.auth_option";
foreach ($sql_ary as $sql)
{
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
$hold_ary[$row['user_id']][$row['forum_id']][$row['auth_option']] = $row['auth_setting'];
}
$db->sql_freeresult($result);
}
return $hold_ary;
}
/**
* Get raw group based permission settings
*/
function acl_group_raw_data($group_id = false, $opts = false, $forum_id = false)
{
global $db;
$sql_group = ($group_id !== false) ? ((!is_array($group_id)) ? 'group_id = ' . (int) $group_id : $db->sql_in_set('group_id', array_map('intval', $group_id))) : '';
$sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? 'AND a.forum_id = ' . (int) $forum_id : 'AND ' . $db->sql_in_set('a.forum_id', array_map('intval', $forum_id))) : '';
$sql_opts = '';
$hold_ary = $sql_ary = array();
if ($opts !== false)
{
$this->build_auth_option_statement('ao.auth_option', $opts, $sql_opts);
}
// Grab group settings - non-role specific...
$sql_ary[] = 'SELECT a.group_id, a.forum_id, a.auth_setting, a.auth_option_id, ao.auth_option
FROM ' . ACL_GROUPS_TABLE . ' a, ' . ACL_OPTIONS_TABLE . ' ao
WHERE a.auth_role_id = 0
AND a.auth_option_id = ao.auth_option_id ' .
(($sql_group) ? 'AND a.' . $sql_group : '') . "
$sql_forum
$sql_opts
ORDER BY a.forum_id, ao.auth_option";
// Now grab group settings - role specific...
$sql_ary[] = 'SELECT a.group_id, a.forum_id, r.auth_setting, r.auth_option_id, ao.auth_option
FROM ' . ACL_GROUPS_TABLE . ' a, ' . ACL_ROLES_DATA_TABLE . ' r, ' . ACL_OPTIONS_TABLE . ' ao
WHERE a.auth_role_id = r.role_id
AND r.auth_option_id = ao.auth_option_id ' .
(($sql_group) ? 'AND a.' . $sql_group : '') . "
$sql_forum
$sql_opts
ORDER BY a.forum_id, ao.auth_option";
foreach ($sql_ary as $sql)
{
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
$hold_ary[$row['group_id']][$row['forum_id']][$row['auth_option']] = $row['auth_setting'];
}
$db->sql_freeresult($result);
}
return $hold_ary;
}
/**
* Get raw acl data based on user for caching user_permissions
* This function returns the same data as acl_raw_data(), but without the user id as the first key within the array.
*/
function acl_raw_data_single_user($user_id)
{
global $db, $cache;
// Check if the role-cache is there
if (($this->role_cache = $cache->get('_role_cache')) === false)
{
$this->role_cache = array();
// We pre-fetch roles
$sql = 'SELECT *
FROM ' . ACL_ROLES_DATA_TABLE . '
ORDER BY role_id ASC';
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
$this->role_cache[$row['role_id']][$row['auth_option_id']] = (int) $row['auth_setting'];
}
$db->sql_freeresult($result);
foreach ($this->role_cache as $role_id => $role_options)
{
$this->role_cache[$role_id] = serialize($role_options);
}
$cache->put('_role_cache', $this->role_cache);
}
$hold_ary = array();
// Grab user-specific permission settings
$sql = 'SELECT forum_id, auth_option_id, auth_role_id, auth_setting
FROM ' . ACL_USERS_TABLE . '
WHERE user_id = ' . $user_id;
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
// If a role is assigned, assign all options included within this role. Else, only set this one option.
if ($row['auth_role_id'])
{
$hold_ary[$row['forum_id']] = (empty($hold_ary[$row['forum_id']])) ? unserialize($this->role_cache[$row['auth_role_id']]) : $hold_ary[$row['forum_id']] + unserialize($this->role_cache[$row['auth_role_id']]);
}
else
{
$hold_ary[$row['forum_id']][$row['auth_option_id']] = $row['auth_setting'];
}
}
$db->sql_freeresult($result);
// Now grab group-specific permission settings
$sql = 'SELECT a.forum_id, a.auth_option_id, a.auth_role_id, a.auth_setting
FROM ' . ACL_GROUPS_TABLE . ' a, ' . USER_GROUP_TABLE . ' ug, ' . GROUPS_TABLE . ' g
WHERE a.group_id = ug.group_id
AND g.group_id = ug.group_id
AND ug.user_pending = 0
AND NOT (ug.group_leader = 1 AND g.group_skip_auth = 1)
AND ug.user_id = ' . $user_id;
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
if (!$row['auth_role_id'])
{
$this->_set_group_hold_ary($hold_ary[$row['forum_id']], $row['auth_option_id'], $row['auth_setting']);
}
else if (!empty($this->role_cache[$row['auth_role_id']]))
{
foreach (unserialize($this->role_cache[$row['auth_role_id']]) as $option_id => $setting)
{
$this->_set_group_hold_ary($hold_ary[$row['forum_id']], $option_id, $setting);
}
}
}
$db->sql_freeresult($result);
return $hold_ary;
}
/**
* Private function snippet for setting a specific piece of the hold_ary
*/
function _set_group_hold_ary(&$hold_ary, $option_id, $setting)
{
if (!isset($hold_ary[$option_id]) || (isset($hold_ary[$option_id]) && $hold_ary[$option_id] != ACL_NEVER))
{
$hold_ary[$option_id] = $setting;
// If we detect ACL_NEVER, we will unset the flag option (within building the bitstring it is correctly set again)
if ($setting == ACL_NEVER)
{
$flag = substr($this->acl_options['option'][$option_id], 0, strpos($this->acl_options['option'][$option_id], '_') + 1);
$flag = (int) $this->acl_options['id'][$flag];
if (isset($hold_ary[$flag]) && $hold_ary[$flag] == ACL_YES)
{
unset($hold_ary[$flag]);
/* This is uncommented, because i suspect this being slightly wrong due to mixed permission classes being possible
if (in_array(ACL_YES, $hold_ary))
{
$hold_ary[$flag] = ACL_YES;
}*/
}
}
}
}
/**
* Authentication plug-ins is largely down to Sergey Kanareykin, our thanks to him.
*/
function login($username, $password, $autologin = false, $viewonline = 1, $admin = 0)
{
global $config, $db, $user, $phpbb_root_path, $phpEx, $phpbb_container;
$method = trim(basename($config['auth_method']));
$provider = $phpbb_container->get('auth.provider.' . $method);
if ($provider)
{
$login = $provider->login($username, $password);
// If the auth module wants us to create an empty profile do so and then treat the status as LOGIN_SUCCESS
if ($login['status'] == LOGIN_SUCCESS_CREATE_PROFILE)
{
// we are going to use the user_add function so include functions_user.php if it wasn't defined yet
if (!function_exists('user_add'))
{
include($phpbb_root_path . 'includes/functions_user.' . $phpEx);
}
user_add($login['user_row'], (isset($login['cp_data'])) ? $login['cp_data'] : false);
$sql = 'SELECT user_id, username, user_password, user_passchg, user_email, user_type
FROM ' . USERS_TABLE . "
WHERE username_clean = '" . $db->sql_escape(utf8_clean_string($username)) . "'";
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if (!$row)
{
return array(
'status' => LOGIN_ERROR_EXTERNAL_AUTH,
'error_msg' => 'AUTH_NO_PROFILE_CREATED',
'user_row' => array('user_id' => ANONYMOUS),
);
}
$login = array(
'status' => LOGIN_SUCCESS,
'error_msg' => false,
'user_row' => $row,
);
}
// If the auth provider wants us to link an empty account do so and redirect
if ($login['status'] == LOGIN_SUCCESS_LINK_PROFILE)
{
// If this status exists a fourth field is in the $login array called 'redirect_data'
// This data is passed along as GET data to the next page allow the account to be linked
$params = array('mode' => 'login_link');
$url = append_sid($phpbb_root_path . 'ucp.' . $phpEx, array_merge($params, $login['redirect_data']));
redirect($url);
}
// If login succeeded, we will log the user in... else we pass the login array through...
if ($login['status'] == LOGIN_SUCCESS)
{
$old_session_id = $user->session_id;
if ($admin)
{
global $SID, $_SID;
$cookie_expire = time() - 31536000;
$user->set_cookie('u', '', $cookie_expire);
$user->set_cookie('sid', '', $cookie_expire);
unset($cookie_expire);
$SID = '?sid=';
$user->session_id = $_SID = '';
}
$result = $user->session_create($login['user_row']['user_id'], $admin, $autologin, $viewonline);
// Successful session creation
if ($result === true)
{
// If admin re-authentication we remove the old session entry because a new one has been created...
if ($admin)
{
// the login array is used because the user ids do not differ for re-authentication
$sql = 'DELETE FROM ' . SESSIONS_TABLE . "
WHERE session_id = '" . $db->sql_escape($old_session_id) . "'
AND session_user_id = {$login['user_row']['user_id']}";
$db->sql_query($sql);
}
return array(
'status' => LOGIN_SUCCESS,
'error_msg' => false,
'user_row' => $login['user_row'],
);
}
return array(
'status' => LOGIN_BREAK,
'error_msg' => $result,
'user_row' => $login['user_row'],
);
}
return $login;
}
trigger_error('Authentication method not found', E_USER_ERROR);
}
/**
* Fill auth_option statement for later querying based on the supplied options
*/
function build_auth_option_statement($key, $auth_options, &$sql_opts)
{
global $db;
if (!is_array($auth_options))
{
if (strpos($auth_options, '%') !== false)
{
$sql_opts = "AND $key " . $db->sql_like_expression(str_replace('%', $db->any_char, $auth_options));
}
else
{
$sql_opts = "AND $key = '" . $db->sql_escape($auth_options) . "'";
}
}
else
{
$is_like_expression = false;
foreach ($auth_options as $option)
{
if (strpos($option, '%') !== false)
{
$is_like_expression = true;
}
}
if (!$is_like_expression)
{
$sql_opts = 'AND ' . $db->sql_in_set($key, $auth_options);
}
else
{
$sql = array();
foreach ($auth_options as $option)
{
if (strpos($option, '%') !== false)
{
$sql[] = $key . ' ' . $db->sql_like_expression(str_replace('%', $db->any_char, $option));
}
else
{
$sql[] = $key . " = '" . $db->sql_escape($option) . "'";
}
}
$sql_opts = 'AND (' . implode(' OR ', $sql) . ')';
}
}
}
}
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