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<?php
/**
* ACL administration functions
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
* @author Anika Henke <a.c.henke@arcor.de> (concepts)
* @author Frank Schubert <frank@schokilade.de> (old version)
*/
// must be run within Dokuwiki
if(!defined('DOKU_INC')) die();
if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_PLUGIN.'admin.php');
/**
* All DokuWiki plugins to extend the admin function
* need to inherit from this class
*/
class admin_plugin_acl extends DokuWiki_Admin_Plugin {
var $acl = null;
var $ns = null;
var $who = '';
var $usersgroups = array();
/**
* return some info
*/
function getInfo(){
return array(
'author' => 'Andreas Gohr',
'email' => 'andi@splitbrain.org',
'date' => '2008-03-15',
'name' => 'ACL',
'desc' => 'Manage Page Access Control Lists',
'url' => 'http://wiki.splitbrain.org/wiki:acl',
);
}
/**
* return prompt for admin menu
*/
function getMenuText($language) {
return $this->getLang('admin_acl');
}
/**
* return sort order for position in admin menu
*/
function getMenuSort() {
return 1;
}
/**
* handle user request
*
* Initializes internal vars and handles modifications
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function handle() {
global $AUTH_ACL;
global $ID;
// namespace given?
if($_REQUEST['ns'] == '*'){
$this->ns = '*';
}else{
$this->ns = cleanID($_REQUEST['ns']);
}
// user or group choosen?
$who = trim($_REQUEST['acl_w']);
if($_REQUEST['acl_t'] == '__g__' && $who){
$this->who = '@'.ltrim($who,'@');
}elseif($_REQUEST['acl_t'] == '__u__' && $who){
$this->who = ltrim($who,'@');
}elseif($_REQUEST['acl_t'] &&
$_REQUEST['acl_t'] != '__u__' &&
$_REQUEST['acl_t'] != '__g__'){
$this->who = $_REQUEST['acl_t'];
}elseif($who){
$this->who = $who;
}
// handle modifications
if(isset($_REQUEST['cmd'])){
// scope for modifications
if($this->ns){
if($this->ns == '*'){
$scope = '*';
}else{
$scope = $this->ns.':*';
}
}else{
$scope = $ID;
}
if(isset($_REQUEST['cmd']['save']) && $scope && $this->who && isset($_REQUEST['acl'])){
// handle additions or single modifications
$this->_acl_del($scope, $this->who);
$this->_acl_add($scope, $this->who, (int) $_REQUEST['acl']);
}elseif(isset($_REQUEST['cmd']['del']) && $scope && $this->who){
// handle single deletions
$this->_acl_del($scope, $this->who);
}elseif(isset($_REQUEST['cmd']['update'])){
// handle update of the whole file
foreach((array) $_REQUEST['del'] as $where => $who){
// remove all rules marked for deletion
unset($_REQUEST['acl'][$where][$who]);
}
// prepare lines
$lines = array();
// keep header
foreach($AUTH_ACL as $line){
if($line{0} == '#'){
$lines[] = $line;
}else{
break;
}
}
// re-add all rules
foreach((array) $_REQUEST['acl'] as $where => $opt){
foreach($opt as $who => $perm){
$who = auth_nameencode($who,true);
$lines[] = "$where\t$who\t$perm\n";
}
}
// save it
io_saveFile(DOKU_CONF.'acl.auth.php', join('',$lines));
}
// reload ACL config
$AUTH_ACL = file(DOKU_CONF.'acl.auth.php');
}
// initialize ACL array
$this->_init_acl_config();
}
/**
* ACL Output function
*
* print a table with all significant permissions for the
* current id
*
* @author Frank Schubert <frank@schokilade.de>
* @author Andreas Gohr <andi@splitbrain.org>
*/
function html() {
global $ID;
echo '<div id="acl_manager">'.NL;
echo '<h1>'.$this->getLang('admin_acl').'</h1>'.NL;
echo '<div class="level1">'.NL;
echo '<div id="acl__tree">'.NL;
$this->_html_explorer($_REQUEST['ns']);
echo '</div>'.NL;
echo '<div id="acl__detail">'.NL;
$this->_html_detail();
echo '</div>'.NL;
echo '</div>'.NL;
echo '<div class="clearer"></div>';
echo '<h2>'.$this->getLang('current').'</h2>'.NL;
echo '<div class="level2">'.NL;
$this->_html_table();
echo '</div>'.NL;
echo '</div>'.NL;
}
/**
* returns array with set options for building links
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _get_opts($addopts=null){
global $ID;
$opts = array(
'do'=>'admin',
'page'=>'acl',
);
if($this->ns) $opts['ns'] = $this->ns;
if($this->who) $opts['acl_w'] = $this->who;
if(is_null($addopts)) return $opts;
return array_merge($opts, $addopts);
}
/**
* Display a tree menu to select a page or namespace
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _html_explorer(){
require_once(DOKU_INC.'inc/search.php');
global $conf;
global $ID;
global $lang;
$dir = $conf['datadir'];
$ns = $this->ns;
if(empty($ns)){
$ns = dirname(str_replace(':','/',$ID));
if($ns == '.') $ns ='';
}elseif($ns == '*'){
$ns ='';
}
$ns = utf8_encodeFN(str_replace(':','/',$ns));
$data = array();
search($data,$conf['datadir'],'search_index',array('ns' => $ns));
// wrap a list with the root level around the other namespaces
$item = array( 'level' => 0, 'id' => '*', 'type' => 'd',
'open' =>'true', 'label' => '['.$lang['mediaroot'].']');
echo '<ul class="acltree">';
echo $this->_html_li_acl($item);
echo '<div class="li">';
echo $this->_html_list_acl($item);
echo '</div>';
echo html_buildlist($data,'acl',
array($this,'_html_list_acl'),
array($this,'_html_li_acl'));
echo '</li>';
echo '</ul>';
}
/**
* Display the current ACL for selected where/who combination with
* selectors and modification form
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _html_detail(){
global $conf;
global $ID;
echo '<form action="'.wl().'" method="post" accept-charset="utf-8"><div class="no">'.NL;
echo '<div id="acl__user">';
echo $this->getLang('acl_perms').' ';
$inl = $this->_html_select();
echo '<input type="text" name="acl_w" class="edit" value="'.(($inl)?'':hsc(ltrim($this->who,'@'))).'" />'.NL;
echo '<input type="submit" value="'.$this->getLang('btn_select').'" class="button" />'.NL;
echo '</div>'.NL;
echo '<div id="acl__info">';
$this->_html_info();
echo '</div>';
echo '<input type="hidden" name="ns" value="'.hsc($this->ns).'" />'.NL;
echo '<input type="hidden" name="id" value="'.hsc($ID).'" />'.NL;
echo '<input type="hidden" name="do" value="admin" />'.NL;
echo '<input type="hidden" name="page" value="acl" />'.NL;
echo '</div></form>'.NL;
}
/**
* Print infos and editor
*/
function _html_info(){
global $ID;
if($this->who){
$current = $this->_get_exact_perm();
// explain current permissions
$this->_html_explain($current);
// load editor
$this->_html_acleditor($current);
}else{
echo '<p>';
if($this->ns){
printf($this->getLang('p_choose_ns'),hsc($this->ns));
}else{
printf($this->getLang('p_choose_id'),hsc($ID));
}
echo '</p>';
echo $this->locale_xhtml('help');
}
}
/**
* Display the ACL editor
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _html_acleditor($current){
global $lang;
echo '<fieldset>';
if(is_null($current)){
echo '<legend>'.$this->getLang('acl_new').'</legend>';
}else{
echo '<legend>'.$this->getLang('acl_mod').'</legend>';
}
echo $this->_html_checkboxes($current,empty($this->ns),'acl');
if(is_null($current)){
echo '<input type="submit" name="cmd[save]" class="button" value="'.$lang['btn_save'].'" />'.NL;
}else{
echo '<input type="submit" name="cmd[save]" class="button" value="'.$lang['btn_update'].'" />'.NL;
echo '<input type="submit" name="cmd[del]" class="button" value="'.$lang['btn_delete'].'" />'.NL;
}
echo '</fieldset>';
}
/**
* Explain the currently set permissions in plain english/$lang
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _html_explain($current){
global $ID;
global $auth;
$who = $this->who;
$ns = $this->ns;
// prepare where to check
if($ns){
if($ns == '*'){
$check='*';
}else{
$check=$ns.':*';
}
}else{
$check = $ID;
}
// prepare who to check
if($who{0} == '@'){
$user = '';
$groups = array(ltrim($who,'@'));
}else{
$user = auth_nameencode($who);
$info = $auth->getUserData($user);
if($info === false){
$groups = array();
}else{
$groups = $info['groups'];
}
}
// check the permissions
$perm = auth_aclcheck($check,$user,$groups);
// build array of named permissions
$names = array();
if($perm){
if($ns){
if($perm >= AUTH_DELETE) $names[] = $this->getLang('acl_perm16');
if($perm >= AUTH_UPLOAD) $names[] = $this->getLang('acl_perm8');
if($perm >= AUTH_CREATE) $names[] = $this->getLang('acl_perm4');
}
if($perm >= AUTH_EDIT) $names[] = $this->getLang('acl_perm2');
if($perm >= AUTH_READ) $names[] = $this->getLang('acl_perm1');
$names = array_reverse($names);
}else{
$names[] = $this->getLang('acl_perm0');
}
// print permission explanation
echo '<p>';
if($user){
if($ns){
printf($this->getLang('p_user_ns'),hsc($who),hsc($ns),join(', ',$names));
}else{
printf($this->getLang('p_user_id'),hsc($who),hsc($ID),join(', ',$names));
}
}else{
if($ns){
printf($this->getLang('p_group_ns'),hsc(ltrim($who,'@')),hsc($ns),join(', ',$names));
}else{
printf($this->getLang('p_group_id'),hsc(ltrim($who,'@')),hsc($ID),join(', ',$names));
}
}
echo '</p>';
// add note if admin
if($perm == AUTH_ADMIN){
echo '<p>'.$this->getLang('p_isadmin').'</p>';
}elseif(is_null($current)){
echo '<p>'.$this->getLang('p_inherited').'</p>';
}
}
/**
* Item formatter for the tree view
*
* User function for html_buildlist()
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _html_list_acl($item){
global $ID;
$ret = '';
// what to display
if($item['label']){
$base = $item['label'];
}else{
$base = ':'.$item['id'];
$base = substr($base,strrpos($base,':')+1);
}
// highlight?
if(($item['type']=='d' &&
$item['id'] == $this->ns) ||
$item['id'] == $ID) $cl = ' cur';
// namespace or page?
if($item['type']=='d'){
if($item['open']){
$img = DOKU_BASE.'lib/images/minus.gif';
$alt = '−';
}else{
$img = DOKU_BASE.'lib/images/plus.gif';
$alt = '+';
}
$ret .= '<img src="'.$img.'" alt="'.$alt.'" />';
$ret .= '<a href="'.wl('',$this->_get_opts(array('ns'=>$item['id']))).'" class="idx_dir'.$cl.'">';
$ret .= $base;
$ret .= '</a>';
}else{
$ret .= '<a href="'.wl('',$this->_get_opts(array('id'=>$item['id'],'ns'=>''))).'" class="wikilink1'.$cl.'">';
$ret .= noNS($item['id']);
$ret .= '</a>';
}
return $ret;
}
function _html_li_acl($item){
return '<li class="level'.$item['level'].'">';
}
/**
* Get current ACL settings as multidim array
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _init_acl_config(){
global $AUTH_ACL;
global $conf;
$acl_config=array();
$usersgroups = array();
foreach($AUTH_ACL as $line){
$line = trim(preg_replace('/#.*$/','',$line)); //ignore comments
if(!$line) continue;
$acl = preg_split('/\s+/',$line);
//0 is pagename, 1 is user, 2 is acl
$acl[1] = rawurldecode($acl[1]);
$acl_config[$acl[0]][$acl[1]] = $acl[2];
// store non-special users and groups for later selection dialog
$ug = $acl[1];
if($ug == '@ALL') continue;
if($ug == $conf['superuser']) continue;
if($ug == $conf['manager']) continue;
$usersgroups[] = $ug;
}
$usersgroups = array_unique($usersgroups);
sort($usersgroups);
uksort($acl_config,array($this,'_sort_names'));
$this->acl = $acl_config;
$this->usersgroups = $usersgroups;
}
/**
* Custom function to sort the ACLs by namespace names
*
* @todo This maybe could be improved to resemble the real tree structure?
*/
function _sort_names($a,$b){
$ca = substr_count($a,':');
$cb = substr_count($b,':');
if($ca < $cb){
return -1;
}elseif($ca > $cb){
return 1;
}else{
return strcmp($a,$b);
}
}
/**
* Display all currently set permissions in a table
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _html_table(){
global $lang;
global $ID;
echo '<form action="'.wl().'" method="post" accept-charset="utf-8"><div class="no">'.NL;
if($this->ns){
echo '<input type="hidden" name="ns" value="'.hsc($this->ns).'" />'.NL;
}else{
echo '<input type="hidden" name="id" value="'.hsc($ID).'" />'.NL;
}
echo '<input type="hidden" name="acl_w" value="'.hsc($this->who).'" />'.NL;
echo '<input type="hidden" name="do" value="admin" />'.NL;
echo '<input type="hidden" name="page" value="acl" />'.NL;
echo '<table class="inline">';
echo '<tr>';
echo '<th>'.$this->getLang('where').'</th>';
echo '<th>'.$this->getLang('who').'</th>';
echo '<th>'.$this->getLang('perm').'</th>';
echo '<th>'.$lang['btn_delete'].'</th>';
echo '</tr>';
foreach($this->acl as $where => $set){
foreach($set as $who => $perm){
echo '<tr>';
echo '<td>';
if(substr($where,-1) == '*'){
echo '<span class="aclns">'.hsc($where).'</span>';
$ispage = false;
}else{
echo '<span class="aclpage">'.hsc($where).'</span>';
$ispage = true;
}
echo '</td>';
echo '<td>';
if($who{0} == '@'){
echo '<span class="aclgroup">'.hsc($who).'</span>';
}else{
echo '<span class="acluser">'.hsc($who).'</span>';
}
echo '</td>';
echo '<td>';
echo $this->_html_checkboxes($perm,$ispage,'acl['.hsc($where).']['.hsc($who).']');
echo '</td>';
echo '<td align="center">';
echo '<input type="checkbox" name="del['.hsc($where).']" value="'.hsc($who).'" />';
echo '</td>';
echo '</tr>';
}
}
echo '<tr>';
echo '<th align="right" colspan="4">';
echo '<input type="submit" value="'.$lang['btn_update'].'" name="cmd[update]" class="button" />';
echo '</th>';
echo '</tr>';
echo '</table>';
echo '</div></form>'.NL;
}
/**
* Returns the permission which were set for exactly the given user/group
* and page/namespace. Returns null if no exact match is available
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _get_exact_perm(){
global $ID;
if($this->ns){
if($this->ns == '*'){
$check = '*';
}else{
$check = $this->ns.':*';
}
}else{
$check = $ID;
}
if(isset($this->acl[$check][auth_nameencode($this->who,true)])){
return $this->acl[$check][auth_nameencode($this->who,true)];
}else{
return null;
}
}
/**
* adds new acl-entry to conf/acl.auth.php
*
* @author Frank Schubert <frank@schokilade.de>
*/
function _acl_add($acl_scope, $acl_user, $acl_level){
$acl_config = file_get_contents(DOKU_CONF.'acl.auth.php');
$acl_user = auth_nameencode($acl_user,true);
// max level for pagenames is edit
if(strpos($acl_scope,'*') === false) {
if($acl_level > AUTH_EDIT) $acl_level = AUTH_EDIT;
}
$new_acl = "$acl_scope\t$acl_user\t$acl_level\n";
$new_config = $acl_config.$new_acl;
return io_saveFile(DOKU_CONF.'acl.auth.php', $new_config);
}
/**
* remove acl-entry from conf/acl.auth.php
*
* @author Frank Schubert <frank@schokilade.de>
*/
function _acl_del($acl_scope, $acl_user){
$acl_config = file(DOKU_CONF.'acl.auth.php');
$acl_user = auth_nameencode($acl_user,true);
$acl_pattern = '^'.preg_quote($acl_scope,'/').'\s+'.$acl_user.'\s+[0-8].*$';
// save all non!-matching
$new_config = preg_grep("/$acl_pattern/", $acl_config, PREG_GREP_INVERT);
return io_saveFile(DOKU_CONF.'acl.auth.php', join('',$new_config));
}
/**
* print the permission radio boxes
*
* @author Frank Schubert <frank@schokilade.de>
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _html_checkboxes($setperm,$ispage,$name){
global $lang;
static $label = 0; //number labels
$ret = '';
if($ispage && $setperm > AUTH_EDIT) $perm = AUTH_EDIT;
foreach(array(AUTH_NONE,AUTH_READ,AUTH_EDIT,AUTH_CREATE,AUTH_UPLOAD,AUTH_DELETE) as $perm){
$label += 1;
//general checkbox attributes
$atts = array( 'type' => 'radio',
'id' => 'pbox'.$label,
'name' => $name,
'value' => $perm );
//dynamic attributes
if(!is_null($setperm) && $setperm == $perm) $atts['checked'] = 'checked';
if($ispage && $perm > AUTH_EDIT){
$atts['disabled'] = 'disabled';
$class = ' class="disabled"';
}else{
$class = '';
}
//build code
$ret .= '<label for="pbox'.$label.'" title="'.$this->getLang('acl_perm'.$perm).'"'.$class.'>';
$ret .= '<input '.html_attbuild($atts).' /> ';
$ret .= $this->getLang('acl_perm'.$perm);
$ret .= '</label>'.NL;
}
return $ret;
}
/**
* Print a user/group selector (reusing already used users and groups)
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function _html_select(){
global $conf;
$inlist = false;
$specials = array('@ALL','@'.$conf['defaultgroup']);
if($conf['manager'] && $conf['manager'] != '!!not set!!') $specials[] = $conf['manager'];
if($this->who &&
!in_array($this->who,$this->usersgroups) &&
!in_array($this->who,$specials)){
if($this->who{0} == '@'){
$gsel = ' selected="selected"';
}else{
$usel = ' selected="selected"';
}
}else{
$usel = '';
$gsel = '';
$inlist = true;
}
echo '<select name="acl_t" class="edit">'.NL;
echo ' <option value="__g__" class="aclgroup"'.$gsel.'>'.$this->getLang('acl_group').':</option>'.NL;
echo ' <option value="__u__" class="acluser"'.$usel.'>'.$this->getLang('acl_user').':</option>'.NL;
echo ' <optgroup label=" ">'.NL;
foreach($specials as $ug){
if($ug == $this->who){
$sel = ' selected="selected"';
$inlist = true;
}else{
$sel = '';
}
if($ug{0} == '@'){
echo ' <option value="'.hsc($ug).'" class="aclgroup"'.$sel.'>'.hsc($ug).'</option>'.NL;
}else{
echo ' <option value="'.hsc($ug).'" class="acluser"'.$sel.'>'.hsc($ug).'</option>'.NL;
}
}
echo ' </optgroup>'.NL;
echo ' <optgroup label=" ">'.NL;
foreach($this->usersgroups as $ug){
if($ug == $this->who){
$sel = ' selected="selected"';
$inlist = true;
}else{
$sel = '';
}
if($ug{0} == '@'){
echo ' <option value="'.hsc($ug).'" class="aclgroup"'.$sel.'>'.hsc($ug).'</option>'.NL;
}else{
echo ' <option value="'.hsc($ug).'" class="acluser"'.$sel.'>'.hsc($ug).'</option>'.NL;
}
}
echo ' </optgroup>'.NL;
echo '</select>'.NL;
return $inlist;
}
}
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