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|
<?php
/**
*
* @package phpBB3
* @version $Id$
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/**
* Permission/Auth class
* @package phpBB3
*/
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, 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++;
}
}
$db->sql_freeresult($result);
$cache->put('acl_options', $this->acl_options);
$this->acl_cache($userdata);
}
else if (!trim($userdata['user_permissions']))
{
$this->acl_cache($userdata);
}
$user_permissions = explode("\n", $userdata['user_permissions']);
foreach ($user_permissions as $f => $seq)
{
if ($seq)
{
$i = 0;
if (!isset($this->acl[$f]))
{
$this->acl[$f] = '';
}
while ($subseq = substr($seq, $i, 6))
{
// We put the original bitstring into the acl array
$this->acl[$f] .= str_pad(base_convert($subseq, 36, 2), 31, 0, STR_PAD_LEFT);
$i += 6;
}
}
}
return;
}
/**
* Look up an option
* if the option is prefixed with !, then the result becomes negated
*
* If a forum id is specified the local option will be combined with a global option if one exist.
* If a forum id is not specified, only the global option will be checked.
*/
function acl_get($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]))
{
$this->cache[$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 nagated
*
* @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))
{
$sql .= ' WHERE forum_id NOT IN (' . implode(', ', array_keys($this->acl)) . ')';
}
$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)
{
$allowed = false;
if (isset($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][$opt];
if ($allowed)
{
break;
}
}
}
else if (isset($this->acl_options['global'][$opt]))
{
$allowed = $this->acl_get($opt);
}
return $allowed;
}
/**
* 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 $acl;
}
/**
* Get permission listing based on user_id/options/forum_ids
*/
function acl_get_list($user_id = false, $opts = false, $forum_id = false)
{
$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 = $this->acl_raw_data($userdata['user_id'], false, false);
if (isset($hold_ary[$userdata['user_id']]))
{
$hold_ary = $hold_ary[$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)
{
$hold_ary[0][$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[$opt]))
{
$bitstring[$id] = $auth_ary[$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[$opt] == ACL_YES && (!isset($bitstring[$this->acl_options[$ary_key][$option_key]]) || $bitstring[$this->acl_options[$ary_key][$option_key]] == ACL_NO))
{
$bitstring[$this->acl_options[$ary_key][$option_key]] = ACL_YES;
}
}
else
{
$bitstring[$id] = ACL_NO;
}
}
// 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; $i < strlen($bitstring); $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;
$where_sql = ($user_id !== false) ? ' WHERE user_id ' . ((is_array($user_id)) ? ' IN (' . implode(', ', array_map('intval', $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 = $ug_id" : "AND a.$sql_id IN (" . implode(', ', $ug_id) . ')') : '';
$sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? "AND a.forum_id = $forum_id" : 'AND a.forum_id IN (' . implode(', ', $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 = $user_id" : 'user_id IN (' . implode(', ', $user_id) . ')') : '';
$sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? "AND a.forum_id = $forum_id" : 'AND a.forum_id IN (' . implode(', ', $forum_id) . ')') : '';
$sql_opts = '';
if ($opts !== false)
{
if (!is_array($opts))
{
$sql_opts = (strpos($opts, '%') !== false) ? "AND ao.auth_option LIKE '" . $db->sql_escape($opts) . "'" : "AND ao.auth_option = '" . $db->sql_escape($opts) . "'";
}
else
{
$sql_opts = 'AND ao.auth_option IN (' . implode(', ', preg_replace('#^\s*(.*)\s*$#e', "\"'\" . \$db->sql_escape('\\1') . \"'\"", $opts)) . ')';
}
}
$hold_ary = array();
// First grab user settings ... each user has only one setting for each
// option ... so we shouldn't need any ACL_NO checks ... he says ...
// Grab assigned roles...
$sql = $db->sql_build_query('SELECT', array(
'SELECT' => 'ao.auth_option, a.auth_role_id, r.auth_setting as role_auth_setting, a.user_id, a.forum_id, a.auth_setting',
'FROM' => array(
ACL_OPTIONS_TABLE => 'ao',
ACL_USERS_TABLE => 'a'
),
'LEFT_JOIN' => array(
array(
'FROM' => array(ACL_ROLES_DATA_TABLE => 'r'),
'ON' => 'a.auth_role_id = r.role_id'
)
),
'WHERE' => '(ao.auth_option_id = a.auth_option_id OR ao.auth_option_id = r.auth_option_id)
' . (($sql_user) ? 'AND a.' . $sql_user : '') . "
$sql_forum
$sql_opts",
'ORDER_BY' => 'a.forum_id, ao.auth_option'
));
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
$setting = ($row['auth_role_id']) ? $row['role_auth_setting'] : $row['auth_setting'];
$hold_ary[$row['user_id']][$row['forum_id']][$row['auth_option']] = $setting;
}
$db->sql_freeresult($result);
// Now grab group settings ... ACL_NO overrides ACL_YES so act appropriatley
$sql = $db->sql_build_query('SELECT', array(
'SELECT' => 'ug.user_id, ao.auth_option, a.forum_id, a.auth_setting, a.auth_role_id, r.auth_setting as role_auth_setting',
'FROM' => array(
USER_GROUP_TABLE => 'ug',
ACL_OPTIONS_TABLE => 'ao',
ACL_GROUPS_TABLE => 'a'
),
'LEFT_JOIN' => array(
array(
'FROM' => array(ACL_ROLES_DATA_TABLE => 'r'),
'ON' => 'a.auth_role_id = r.role_id'
)
),
'WHERE' => '(ao.auth_option_id = a.auth_option_id OR ao.auth_option_id = r.auth_option_id)
AND a.group_id = ug.group_id
AND ug.user_pending = 0
' . (($sql_user) ? 'AND ug.' . $sql_user : '') . "
$sql_forum
$sql_opts",
'ORDER_BY' => 'a.forum_id, ao.auth_option'
));
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
if (!isset($hold_ary[$row['user_id']][$row['forum_id']][$row['auth_option']]) || (isset($hold_ary[$row['user_id']][$row['forum_id']][$row['auth_option']]) && $hold_ary[$row['user_id']][$row['forum_id']][$row['auth_option']] != ACL_NO))
{
$setting = ($row['auth_role_id']) ? $row['role_auth_setting'] : $row['auth_setting'];
$hold_ary[$row['user_id']][$row['forum_id']][$row['auth_option']] = $setting;
// Check for existence of ACL_YES if an option got set to NO
if ($setting == ACL_NO)
{
$flag = substr($row['auth_option'], 0, strpos($row['auth_option'], '_') + 1);
if (isset($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 = $user_id" : 'user_id IN (' . implode(', ', $user_id) . ')') : '';
$sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? "AND a.forum_id = $forum_id" : 'AND a.forum_id IN (' . implode(', ', $forum_id) . ')') : '';
$sql_opts = '';
if ($opts !== false)
{
if (!is_array($opts))
{
$sql_opts = (strpos($opts, '%') !== false) ? "AND ao.auth_option LIKE '" . $db->sql_escape($opts) . "'" : "AND ao.auth_option = '" . $db->sql_escape($opts) . "'";
}
else
{
$sql_opts = 'AND ao.auth_option IN (' . implode(', ', preg_replace('#^\s*(.*)\s*$#e', "\"'\" . \$db->sql_escape('\\1') . \"'\"", $opts)) . ')';
}
}
$hold_ary = array();
// Grab user settings...
$sql = $db->sql_build_query('SELECT', array(
'SELECT' => 'ao.auth_option, a.auth_role_id, r.auth_setting as role_auth_setting, a.user_id, a.forum_id, a.auth_setting',
'FROM' => array(
ACL_OPTIONS_TABLE => 'ao',
ACL_USERS_TABLE => 'a'
),
'LEFT_JOIN' => array(
array(
'FROM' => array(ACL_ROLES_DATA_TABLE => 'r'),
'ON' => 'a.auth_role_id = r.role_id'
),
),
'WHERE' => '(ao.auth_option_id = a.auth_option_id OR ao.auth_option_id = r.auth_option_id)
' . (($sql_user) ? 'AND a.' . $sql_user : '') . "
$sql_forum
$sql_opts",
'ORDER_BY' => 'a.forum_id, ao.auth_option'
));
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
$setting = ($row['auth_role_id']) ? $row['role_auth_setting'] : $row['auth_setting'];
$hold_ary[$row['user_id']][$row['forum_id']][$row['auth_option']] = $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 = $group_id" : 'group_id IN (' . implode(', ', $group_id) . ')') : '';
$sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? "AND a.forum_id = $forum_id" : 'AND a.forum_id IN (' . implode(', ', $forum_id) . ')') : '';
if ($opts !== false)
{
if (!is_array($opts))
{
$sql_opts = (strpos($opts, '%') !== false) ? "AND ao.auth_option LIKE '" . $db->sql_escape($opts) . "'" : "AND ao.auth_option = '" . $db->sql_escape($opts) . "'";
}
else
{
$sql_opts = 'AND ao.auth_option IN (' . implode(', ', preg_replace('#^\s*(.*)\s*$#e', "\"'\" . \$db->sql_escape('\\1') . \"'\"", $opts)) . ')';
}
}
$hold_ary = array();
// Grab group settings...
$sql = $db->sql_build_query('SELECT', array(
'SELECT' => 'a.group_id, ao.auth_option, a.forum_id, a.auth_setting, a.auth_role_id, r.auth_setting as role_auth_setting',
'FROM' => array(
ACL_OPTIONS_TABLE => 'ao',
ACL_GROUPS_TABLE => 'a'
),
'LEFT_JOIN' => array(
array(
'FROM' => array(ACL_ROLES_DATA_TABLE => 'r'),
'ON' => 'a.auth_role_id = r.role_id'
),
),
'WHERE' => '(ao.auth_option_id = a.auth_option_id OR ao.auth_option_id = r.auth_option_id)
' . (($sql_group) ? 'AND a.' . $sql_group : '') . "
$sql_forum
$sql_opts",
'ORDER_BY' => 'a.forum_id, ao.auth_option'
));
$result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result))
{
$setting = ($row['auth_role_id']) ? $row['role_auth_setting'] : $row['auth_setting'];
$hold_ary[$row['group_id']][$row['forum_id']][$row['auth_option']] = $setting;
}
$db->sql_freeresult($result);
return $hold_ary;
}
/**
* Authentication plug-ins is largely down to Sergey Kanareykin, our thanks to him.
*/
function login($username, $password, $autologin = false, $viewonline = 1, $admin = 0)
{
global $config, $db, $user, $phpbb_root_path, $phpEx;
$method = trim(basename($config['auth_method']));
if (file_exists($phpbb_root_path . 'includes/auth/auth_' . $method . '.' . $phpEx))
{
include_once($phpbb_root_path . 'includes/auth/auth_' . $method . '.' . $phpEx);
$method = 'login_' . $method;
if (function_exists($method))
{
$login = $method($username, $password);
// If login succeeded, we will log the user in... else we pass the login array through...
if ($login['status'] == LOGIN_SUCCESS)
{
$result = $user->session_create($login['user_row']['user_id'], $admin, $autologin, $viewonline);
// Successful session creation
if ($result === true)
{
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);
}
}
?>
|
