User management for the world wide web

Apache.php

<?php
require_once("GenieGate/utils.php");
/* Register self. */
$this->addListener(new GenieGate_Api_Plugin_Apache($this->CFG)); 


class GenieGate_Api_Plugin_Apache_FlatGroupFile {
    
    var $tree;

    function GenieGate_Api_Plugin_Apache_FlatGroupFile($filename){
        $this->tree = $this->parse($filename);
    }
    
    function parse($filename){
        $tree = array();
        if(! file_exists($filename)){
            return($tree);
        }
        $buffer = file($filename); // Slurp it all in.
        if(! is_array($buffer)){
            return($tree);
        }   
        foreach($buffer as $line){
            // Parse into a record, group: user user user
            $record = preg_split("/\:\s*|\s+/",trim($line));
            $gid = array_shift($record);        
            // Hmm.. multiple group: lines 
            // in the same file, this is perfectly legit.
            if(isset($tree[$gid])){
                $tree[$gid] = array_merge($tree[$gid],$record);
            }else{
                $tree[$gid] = $record;
            }
        }   
        return($tree);
    }
    
    function removeUid($uid) {
        foreach($this->tree as $gid => $members){
            // Search for user.
            $ix = array_search($uid,$members);
            // Remove the member.
            if($members[$ix] == $uid){
                $this->tree[$gid][$ix] = FALSE;
            }
        }   
    }
    
    function removeGid($gid){
        unset($this->tree[$gid]);
    }
    
    function addUid($uid,$gid){
        if(is_array($this->tree[$gid])){
            array_push($this->tree[$gid],$uid); 
        }else{
            $this->tree[$gid] = array($uid);
        }   
    }
    
    function save($fh) {
        foreach($this->tree as $gid => $members){
            if($gid){
                $buf = "$gid:";
                foreach($this->tree[$gid] as $uid){
                    if($uid){
                        $buf .= $uid . " ";
                    }
                }
                fputs($fh,$buf . "\n");
            }
        }
    }
}

class GenieGate_Api_Plugin_Apache extends GenieGate_Api_Plugin {

  var $CFG;

  function GenieGate_Api_Plugin_Apache(&$conf){
    $this->CFG = $conf[ApachePlugin];
  }

  function setupUser($ua,$fields,$conf_id){
    $pf = $this->CFG[AuthUserFile];    
    if($pf) {
      $this->apache_replaceOrAddPw($pf,$fields[uid],$fields[password]);     
    }
  }

  // Change password.
  function userInfoChanged(&$um,$uid,&$old_values,&$new_values) {
    $pf = $this->CFG[AuthUserFile]; 
    if($pf){
      $this->apache_replaceOrAddPw($pf,$new_values[uid],$new_values[password]);      
    }
  }

  function userGroupsChanged(&$gm,$uid,&$oldg,&$newg) {    
    $gf = $this->CFG[AuthGroupFile];
    if(! $gf){
        return; // No Group file specified in conf, so ignore.
    }
    $twr = new GenieGate_TempWriter($gf); // this also locks it, does backup etc..
    $groups = new GenieGate_Api_Plugin_Apache_FlatGroupFile($gf);
    $groups->removeUid($uid);
    // Add member to each group.
    foreach($newg as $g){
        $groups->addUid($uid,$g);
    }
    $groups->save($twr->getWrite());
    $twr->complete(); 
  }

  // Remove Group ID, and all members. Standard
  // Plugin hook.
  function groupNameDelete(&$gm,$gid,&$info){
    $gf = $this->CFG[AuthGroupFile];
    if(! $gf){
        return; // No Group file specified in conf, so ignore.
    }
    $twr = new GenieGate_TempWriter($gf); 
    $groups = new GenieGate_Api_Plugin_Apache_FlatGroupFile($gf);
    $groups->removeGid($gid);
    $groups->save($twr->getWrite());
    $twr->complete();
  }

  function apache_replaceOrAddPw($pf,$un,$pw){ 
    $crypt_data = "$un:" . crypt($pw) . "\n";

    $twr = new GenieGate_TempWriter($pf);
    $rh = $twr->getRead();
    $wh = $twr->getWrite();
    while(! feof($rh)){
      $buffer = fgets($rh,4096);
      list($id,$pw) = explode(":",$buffer);
      if($id != $un){
        fputs($wh,$buffer); // Nope, but do save data.
      }else{
        if(strlen($crypt_data) > 0){
            fputs($wh,$crypt_data); // It's us, save our entry to tmp file.
            $crypt_data = "";
        }
      }
    }
    // Did we save it?
    if(strlen($crypt_data)){
      fputs($wh,$crypt_data); // Nope, must be a new entry!
    }
    $twr->complete(); // Finish editing.
  }

  function removeUser($ua,$uid,$fields) {
    $pf = $this->CFG[AuthUserFile];
    if(! $pf){
      return;
    }
    if(! file_exists($pf)){
      return;
    }
    
    $twr = new GenieGate_TempWriter($pf);
    $rh = $twr->getRead();
    $wh = $twr->getWrite();
    while(! feof($rh)){
      $buffer = fgets($rh,4096);
      list($id,$pw) = explode(":",$buffer);
      if($id != $uid){
    fputs($wh,$buffer); // Not us.
      }
    }
    $twr->complete();
  }
}


?>

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