<?php
class G6ftp
{
	public $db;
	private $paths;//array of westdc path
	private $userpath;
	private $westdcid=74;//从数据库中读出,newwestdc
	private $westdcgroup=1;//从数据库中读出
	public $pwd;
	public $time;
	function __construct()
	{
	}
	private function getwestdcpath()
	{
		$sql=$this->db->quoteInto("select s.configvalue from g6ftpusersettings s where s.userid=? and s.configname='AccessList'",$this->westdcid);
		$result=$this->db->fetchRow($sql);
		$this->paths=explode("\n",$result['configvalue']);
	}
	private function getuserpath($paths)
	{
		$p[0]=$this->paths[0];
		foreach($paths as $path)
		{
			foreach($this->paths as $p1)
			{
				if (strpos($p1, $path)!==false)
				{
					$p[]=$p1;
					break;
				}
			}
		}
		return implode("\n",$p);
	}
	private function getuserpathindb($userid)
	{
		$sql=$this->db->quoteInto("select s.configvalue from g6ftpusersettings s where s.userid=? and s.configname='AccessList'",$userid);
		$result=$this->db->fetchRow($sql);
		$this->userpath=explode("\n",$result['configvalue']);	
	}
	private function getuserpath1($paths)
	{
		//数组判断
		if (!is_array($this->userpath)) $this->userpath[]=$this->userpath;
		//根据WESTDC帐号查找相似虚拟目录
		foreach($paths as $path)
		{
			foreach($this->paths as $p1)
			{
				if (strpos($p1, $path)!==false)
				{
					$p[]=$p1;
					break;
				}
			}
		}
		//对比已有帐号进行查找
		foreach($this->userpath as $path)
		{
			foreach($p as $i=>$p1)
			{
				if (@strpos($p1, $path)!==false)
				{
					unset($p[$i]);
					break;
				}
			}
		}		
		return implode("\n",$p);
	}	
	function createuser($user)
	{
		//只插入到users_settings表中
		$sql=$this->db->quoteInto("select * from g6ftpusers where name=?",$user->username);
		$u=$this->db->fetchRow($sql);
		if (empty($u))
		{
			$sql=$this->db->quoteInto("insert into g6ftpusers (domainid,name) values(1,?)",$user->username);
			$this->db->query($sql);						
			$sql=$this->db->quoteInto("select id from g6ftpusers where domainid=1 and name=?",$user->username);
			$a=$this->db->fetchRow($sql);
			$userid = $a['id'];
			/* 这部分功能已经放在数据库中实现
			$sql="insert into g6ftpusersettings (userid,configname,configvalue) (select ".$userid." as userid,configname,configvalue from g6ftpusersettings where userid=".$this->westdcid.")";
			$this->db->query($sql);
			*/
		} else $userid=$u['id'];//g6ftp中的用户ID，非系统的用户ID
		$this->pwd=$user->password;//初始化
		$this->time=$user->time;
		//判断用户密码是否失效，或用户一次下载数据已经达到上限
		$sql=$this->db->quoteInto("select * from ftpuser where userid=?",$user->id);
		$u=$this->db->fetchRow($sql);
		if (empty($u)) {
			$sql=$this->db->quoteInto("update g6ftpusersettings set configvalue=? where configname='Password' and userid=".$userid,strtoupper('MD5:'.md5($user->password)));
			$this->db->query($sql); 
			$this->getwestdcpath();
			$sql=$this->db->quoteInto("update g6ftpusersettings set configvalue=? where configname='AccessList' and userid=".$userid,$this->getuserpath($user->path));
			$this->db->query($sql);
			//插入ftpuser信息
			$sql="insert into ftpuser (userid,pwd,ts_created,ts_invalid,datacount) values(?,?,now(),?,1)";
			$this->db->query($sql,array($user->id,$user->password,$user->time));
			return true;
		} elseif (strtotime($u['ts_invalid'])<=time() or $u['datacount']<2) {
			//更新用户密码、数据地址和数据计数
			//数据地址覆盖原来的信息
			$sql=$this->db->quoteInto("update g6ftpusersettings set configvalue=? where configname='Password' and userid=".$userid,strtoupper('MD5:'.md5($user->password)));
			$this->db->query($sql); 
			$this->getwestdcpath();
			$sql=$this->db->quoteInto("update g6ftpusersettings set configvalue=? where configname='AccessList' and userid=".$userid,$this->getuserpath($user->path));
			$this->db->query($sql);
			$sql="update ftpuser set pwd=?,ts_created=now(),ts_invalid=?,datacount=1 where userid=?";
			$this->db->query($sql,array($user->password,$user->time,$user->id));
			return true;			
		} elseif (strtotime($u['ts_invalid'])>time() && $u['datacount']<$user->maxdata) {
			//更新数据地址和数据计数
			//数据地址要追加在原来的后面
			//需要判断数据是否已经在下载进程中
			$this->getwestdcpath();
			$this->getuserpathindb($userid);
			//var_dump($this->userpath);die();
			if ($this->getuserpath1($user->path)) {
				$sql=$this->db->quoteInto("update g6ftpusersettings set configvalue=configvalue||'\n'||? where configname='AccessList' and userid=".$userid,$this->getuserpath1($user->path));
				$this->db->query($sql);
				$sql="update ftpuser set ts_invalid=?,datacount=? where userid=?";
				$this->db->query($sql,array($user->time,$user->datacount,$user->id));
			} else {
				$sql="select pwd,ts_invalid from ftpuser where userid=?";
				$u=$this->db->fetchRow($sql,array($user->id));
				$this->pwd=$u['pwd'];
				$this->time=$u['ts_invalid'];
			}
			return true;		
		} else //同时下载数据数超过限制
			return false;
	}	
}
?>