isClose = FALSE; $this->safeCheck = TRUE; $this->pconnect = $pconnect; if($nconnect) { $this->Init($pconnect); } } function DedeSql($pconnect=FALSE,$nconnect=TRUE) { $this->__construct($pconnect,$nconnect); } function Init($pconnect=FALSE) { $this->linkID = 0; //$this->queryString = ''; //$this->parameters = Array(); $this->dbHost = $GLOBALS['cfg_dbhost']; $this->dbUser = $GLOBALS['cfg_dbuser']; $this->dbPwd = $GLOBALS['cfg_dbpwd']; $this->dbName = $GLOBALS['cfg_dbname']; $this->dbPrefix = $GLOBALS['cfg_dbprefix']; $this->result["me"] = 0; $this->Open($pconnect); } //用指定参数初始数据库信息 function SetSource($host,$username,$pwd,$dbname,$dbprefix="dede_") { $this->dbHost = $host; $this->dbUser = $username; $this->dbPwd = $pwd; $this->dbName = $dbname; $this->dbPrefix = $dbprefix; $this->result["me"] = 0; } //设置SQL里的参数 function SetParameter($key,$value) { $this->parameters[$key]=$value; } //连接数据库 function Open($pconnect=FALSE) { global $dsqlite; //连接数据库 if($dsqlite && !$dsqlite->isClose && $dsqlite->isInit) { $this->linkID = $dsqlite->linkID; } else { $this->linkID = new SQLite3(DEDEDATA.'/'.$this->dbName.'.db'); //复制一个对象副本 CopySQLiPoint($this); } //处理错误，成功连接则选择数据库 if(!$this->linkID) { $this->DisplayError("DedeCMS错误警告：连接数据库失败，可能数据库密码不对或数据库服务器出错！"); exit(); } $this->isInit = TRUE; return TRUE; } //为了防止采集等需要较长运行时间的程序超时，在运行这类程序时设置系统等待和交互时间 function SetLongLink() { @mysqli_query("SET interactive_timeout=3600, wait_timeout=3600 ;", $this->linkID); } //获得错误描述 function GetError() { $str = mysqli_error($this->linkID); return $str; } //关闭数据库 //mysql能自动管理非持久连接的连接池 //实际上关闭并无意义并且容易出错，所以取消这函数 function Close($isok=FALSE) { $this->FreeResultAll(); if($isok) { $this->linkID->close(); $this->isClose = TRUE; $GLOBALS['dsql'] = NULL; } } //定期清理死连接 function ClearErrLink() { } //关闭指定的数据库连接 function CloseLink($dblink) { } function Esc( $_str ) { return addslashes($_str); } //执行一个不返回结果的SQL语句，如update,delete,insert等 function ExecuteNoneQuery($sql='') { global $dsqlite; if(!$dsqlite->isInit) { $this->Init($this->pconnect); } if($dsqlite->isClose) { $this->Open(FALSE); $dsqlite->isClose = FALSE; } if(!empty($sql)) { $this->SetQuery($sql); }else{ return FALSE; } if(is_array($this->parameters)) { foreach($this->parameters as $key=>$value) { $this->queryString = str_replace("@".$key,"'$value'",$this->queryString); } } //SQL语句安全检查 if($this->safeCheck) CheckSql($this->queryString,'update'); $t1 = ExecTime(); $rs = $this->linkID->exec($this->queryString); //查询性能测试 if($this->recordLog) { $queryTime = ExecTime() - $t1; $this->RecordLog($queryTime); //echo $this->queryString."--{$queryTime}

\r\n"; } return $rs; } //执行一个返回影响记录条数的SQL语句，如update,delete,insert等 function ExecuteNoneQuery2($sql='') { global $dsqlite; if(!$dsqlite->isInit) { $this->Init($this->pconnect); } if($dsqlite->isClose) { $this->Open(FALSE); $dsqlite->isClose = FALSE; } if(!empty($sql)) { $this->SetQuery($sql); } if(is_array($this->parameters)) { foreach($this->parameters as $key=>$value) { $this->queryString = str_replace("@".$key,"'$value'",$this->queryString); } } $t1 = ExecTime(); $this->linkID->exec($this->queryString); //查询性能测试 if($this->recordLog) { $queryTime = ExecTime() - $t1; $this->RecordLog($queryTime); //echo $this->queryString."--{$queryTime}

\r\n"; } return $this->linkID->changes(); } function ExecNoneQuery($sql='') { return $this->ExecuteNoneQuery($sql); } function GetFetchRow($id='me') { return $this->result[$id]->numColumns(); } function GetAffectedRows() { return $this->linkID->changes(); } //执行一个带返回结果的SQL语句，如SELECT，SHOW等 function Execute($id="me", $sql='') { global $dsqlite; if(!$dsqlite->isInit) { $this->Init($this->pconnect); } if($dsqlite->isClose) { $this->Open(FALSE); $dsqlite->isClose = FALSE; } if(!empty($sql)) { $this->SetQuery($sql); } //SQL语句安全检查 if($this->safeCheck) { CheckSql($this->queryString); } $t1 = ExecTime(); //var_dump($this->queryString); $this->result[$id] = $this->linkID->query($this->queryString); //var_dump(mysql_error()); //查询性能测试 if($this->recordLog) { $queryTime = ExecTime() - $t1; $this->RecordLog($queryTime); //echo $this->queryString."--{$queryTime}

\r\n"; } if($this->result[$id]===FALSE) { $this->DisplayError($this->linkID->lastErrorMsg()."
Error sql: ".$this->queryString.""); } } function Query($id="me",$sql='') { $this->Execute($id,$sql); } //执行一个SQL语句,返回前一条记录或仅返回一条记录 function GetOne($sql='',$acctype=MYSQLI_ASSOC) { global $dsqlite; if(!$dsqlite->isInit) { $this->Init($this->pconnect); } if($dsqlite->isClose) { $this->Open(FALSE); $dsqlite->isClose = FALSE; } if(!empty($sql)) { if(!preg_match("/LIMIT/i",$sql)) $this->SetQuery(preg_replace("/[,;]$/i", '', trim($sql))." LIMIT 0,1;"); else $this->SetQuery($sql); } $this->Execute("one"); $arr = $this->GetArray("one", $acctype); if(!is_array($arr)) { return ''; } else { $this->result["one"]->reset(); return($arr); } } //执行一个不与任何表名有关的SQL语句,Create等 function ExecuteSafeQuery($sql,$id="me") { global $dsqlite; if(!$dsqlite->isInit) { $this->Init($this->pconnect); } if($dsqlite->isClose) { $this->Open(FALSE); $dsqlite->isClose = FALSE; } $this->result[$id] = $this->linkID->query($sql); } //返回当前的一条记录并把游标移向下一记录 // SQLITE3_ASSOC、SQLITE3_NUM、SQLITE3_BOTH function GetArray($id="me",$acctype=SQLITE3_ASSOC) { switch ( $acctype ) { case MYSQL_ASSOC: $acctype = SQLITE3_ASSOC; break; case MYSQL_NUM: $acctype = SQLITE3_NUM; break; default: $acctype = SQLITE3_BOTH; break; } if($this->result[$id]===0) { return FALSE; } else { $rs = $this->result[$id]->fetchArray($acctype); if ( !$rs ) { $this->result[$id]=0; return false; } return $rs; } } function GetObject($id="me") { if ( !isset($this->_fixObject[$id]) ) { $this->_fixObject[$id] = array(); while ( $row = $this->result[$id]->fetchArray(SQLITE3_ASSOC) ) { $this->_fixObject[$id][] = (object)$row; } $this->result[$id]->reset(); } return array_shift($this->_fixObject[$id]); } // 检测是否存在某数据表 function IsTable($tbname) { global $dsqlite; if(!$dsqlite->isInit) { $this->Init($this->pconnect); } $prefix="#@__"; $tbname = str_replace($prefix, $GLOBALS['cfg_dbprefix'], $tbname); $row = $this->linkID->querySingle( "PRAGMA table_info({$tbname});"); if( $row !== null ) { return TRUE; } return FALSE; } //获得MySql的版本号 function GetVersion($isformat=TRUE) { global $dsqlite; if(!$dsqlite->isInit) { $this->Init($this->pconnect); } if($dsqlite->isClose) { $this->Open(FALSE); $dsqlite->isClose = FALSE; } $rs = $this->linkID->querySingle("select sqlite_version();"); $sqlite_version = $rs; if($isformat) { $sqlite_versions = explode(".",trim($sqlite_version)); $sqlite_version = number_format($sqlite_versions[0].".".$sqlite_versions[1],2); } return $sqlite_version; } //获取特定表的信息 function GetTableFields($tbname, $id="me") { global $dsqlite; if(!$dsqlite->isInit) { $this->Init($this->pconnect); } $prefix="#@__"; $tbname = str_replace($prefix, $GLOBALS['cfg_dbprefix'], $tbname); $query = "SELECT * FROM {$tbname} LIMIT 0,1"; $this->result[$id] = $this->linkID->query($query); } //获取字段详细信息 function GetFieldObject($id="me") { $cols = $this->result[$id]->numColumns(); $fields = array(); while ($row = $this->result[$id]->fetchArray()) { for ($i = 1; $i < $cols; $i++) { $fields[] = $this->result[$id]->columnName($i); } } return (object)$fields; } //获得查询的总记录数 function GetTotalRow($id="me") { $queryString = preg_replace("/SELECT(.*)FROM/isU",'SELECT count(*) as dd FROM',$this->queryString); $rs = $this->linkID->query($queryString); $row = $rs->fetchArray(); return $row['dd']; } //获取上一步INSERT操作产生的ID function GetLastID() { //如果 AUTO_INCREMENT 的列的类型是 BIGINT，则 mysqli_insert_id() 返回的值将不正确。 //可以在 SQL 查询中用 MySQL 内部的 SQL 函数 LAST_INSERT_ID() 来替代。 //$rs = mysqli_query($this->linkID, "Select LAST_INSERT_ID() as lid"); //$row = mysqli_fetch_array($rs); //return $row["lid"]; return $this->linkID->lastInsertRowID(); } //释放记录集占用的资源 function FreeResult($id="me") { if ( $this->result[$id] ) { @$this->result[$id]->reset(); } } function FreeResultAll() { if(!is_array($this->result)) { return ''; } foreach($this->result as $kk => $vv) { if($vv) { @$vv->reset(); } } } //设置SQL语句，会自动把SQL语句里的#@__替换为$this->dbPrefix(在配置文件中为$cfg_dbprefix) function SetQuery($sql) { $prefix="#@__"; $sql = str_replace($prefix,$GLOBALS['cfg_dbprefix'],$sql); $this->queryString = $sql; //$this->queryString = preg_replace("/CONCAT$',', arc.typeid2, ','$/i","printf(',%s,', arc.typeid2)",$this->queryString); if ( preg_match("/CONCAT$([^$]*?)\)/i",$this->queryString,$matches) ) { $this->queryString = preg_replace("/CONCAT$([^$]*?)\)/i",str_replace(",","||",$matches[1]), $this->queryString); $this->queryString = str_replace("'||'","','",$this->queryString); } $this->queryString = preg_replace("/FIND_IN_SET$'([\w]+)', arc.flag$>0/i","(',' || arc.flag || ',') LIKE '%,\\1,%'",$this->queryString); $this->queryString = preg_replace("/FIND_IN_SET$'([\w]+)', arc.flag$<1/i","(',' || arc.flag || ',') NOT LIKE '%,\\1,%'",$this->queryString); if ( preg_match("/CREATE TABLE/i",$this->queryString) ) { $this->queryString = preg_replace("/[\r\n]/",'',$this->queryString); $this->queryString = preg_replace('/character set (.*?) /i','',$this->queryString); $this->queryString = preg_replace('/unsigned/i','',$this->queryString); $this->queryString = str_replace('TYPE=MyISAM','',$this->queryString); $this->queryString = preg_replace ('/TINYINT$([\d]+)$/i','INTEGER',$this->queryString); $this->queryString = preg_replace ('/mediumint$([\d]+)$/i','INTEGER',$this->queryString); $this->queryString = preg_replace ('/smallint$([\d]+)$/i','INTEGER',$this->queryString); $this->queryString = preg_replace('/int$([\d]+)$/i','INTEGER',$this->queryString); $this->queryString = preg_replace('/auto_increment/i','PRIMARY KEY AUTOINCREMENT',$this->queryString); $this->queryString = preg_replace('/, KEY(.*?)MyISAM;/i','',$this->queryString); $this->queryString = preg_replace('/, KEY(.*?);/i',');',$this->queryString); $this->queryString = preg_replace('/, UNIQUE KEY(.*?);/i',');',$this->queryString); $this->queryString = preg_replace('/set$([^$]*?)\)/','varchar',$this->queryString); $this->queryString = preg_replace('/enum$([^$]*?)\)/','varchar',$this->queryString); if ( preg_match("/PRIMARY KEY AUTOINCREMENT/",$this->queryString) ) { $this->queryString = preg_replace('/,([\t\s ]+)PRIMARY KEY $`([0-9a-zA-Z]+)`$/i','',$this->queryString); $this->queryString = str_replace(', PRIMARY KEY (`id`)','',$this->queryString); } } $this->queryString = preg_replace("/SHOW fields FROM `([\w]+)`/i","PRAGMA table_info('\\1') ",$this->queryString); $this->queryString = preg_replace("/SHOW CREATE TABLE .([\w]+)/i","SELECT 0,sql FROM sqlite_master WHERE name='\\1'; ",$this->queryString); //var_dump($this->queryString); $this->queryString = preg_replace("/Show Tables/i","SELECT name FROM sqlite_master WHERE type = \"table\"",$this->queryString); $this->queryString = str_replace("\'","\"",$this->queryString); //var_dump($this->queryString); } function SetSql($sql) { $this->SetQuery($sql); } function RecordLog($runtime=0) { $RecordLogFile = dirname(__FILE__).'/../data/mysqli_record_log.inc'; $url = $this->GetCurUrl(); $savemsg = <<queryString} Page:$url Runtime:$runtime EOT; $fp = @fopen($RecordLogFile, 'a'); @fwrite($fp, $savemsg); @fclose($fp); } //显示数据链接错误信息 function DisplayError($msg) { $errorTrackFile = dirname(__FILE__).'/../data/mysqli_error_trace.inc'; if( file_exists(dirname(__FILE__).'/../data/mysqli_error_trace.php') ) { @unlink(dirname(__FILE__).'/../data/mysqli_error_trace.php'); } if($this->showError) { $emsg = ''; $emsg .= "

DedeCMS Error Warning!

\r\n"; $emsg .= "

Technical Support: http://bbs.dedecms.com

"; $emsg .= "

\r\n"; $emsg .= "

Error page: ".$this->GetCurUrl()."

\r\n"; $emsg .= "

Error infos: {$msg}

\r\n"; $emsg .= "

\r\n"; echo $emsg; } $savemsg = 'Page: '.$this->GetCurUrl()."\r\nError: ".$msg."\r\nTime".date('Y-m-d H:i:s'); //保存MySql错误日志 $fp = @fopen($errorTrackFile, 'a'); @fwrite($fp, '<'.'?php exit();'."\r\n/*\r\n{$savemsg}\r\n*/\r\n?".">\r\n"); @fclose($fp); } //获得当前的脚本网址 function GetCurUrl() { if(!empty($_SERVER["REQUEST_URI"])) { $scriptName = $_SERVER["REQUEST_URI"]; $nowurl = $scriptName; } else { $scriptName = $_SERVER["PHP_SELF"]; if(empty($_SERVER["QUERY_STRING"])) { $nowurl = $scriptName; } else { $nowurl = $scriptName."?".$_SERVER["QUERY_STRING"]; } } return $nowurl; } } //复制一个对象副本 function CopySQLiPoint(&$ndsql) { $GLOBALS['dsqlite'] = $ndsql; } //SQL语句过滤程序，由80sec提供，这里作了适当的修改 if (!function_exists('CheckSql')) { function CheckSql($db_string,$querytype='select') { global $cfg_cookie_encode; $clean = ''; $error=''; $old_pos = 0; $pos = -1; $log_file = DEDEINC.'/../data/'.md5($cfg_cookie_encode).'_safe.txt'; $userIP = GetIP(); $getUrl = GetCurUrl(); //如果是普通查询语句，直接过滤一些特殊语法 if($querytype=='select') { $notallow1 = "[^0-9a-z@\._-]{1,}(union|sleep|benchmark|load_file|outfile)[^0-9a-z@\.-]{1,}"; //$notallow2 = "--|/\*"; if(preg_match("/".$notallow1."/i", $db_string)) { fputs(fopen($log_file,'a+'),"$userIP||$getUrl||$db_string||SelectBreak\r\n"); exit("Safe Alert: Request Error step 1 !"); } } //完整的SQL检查 while (TRUE) { $pos = strpos($db_string, '\'', $pos + 1); if ($pos === FALSE) { break; } $clean .= substr($db_string, $old_pos, $pos - $old_pos); while (TRUE) { $pos1 = strpos($db_string, '\'', $pos + 1); $pos2 = strpos($db_string, '\\', $pos + 1); if ($pos1 === FALSE) { break; } elseif ($pos2 == FALSE || $pos2 > $pos1) { $pos = $pos1; break; } $pos = $pos2 + 1; } $clean .= '$s$'; $old_pos = $pos + 1; } $clean .= substr($db_string, $old_pos); $clean = trim(strtolower(preg_replace(array('~\s+~s' ), array(' '), $clean))); if (strpos($clean, '@') !== FALSE OR strpos($clean,'char(')!== FALSE OR strpos($clean,'"')!== FALSE OR strpos($clean,'$s$$s$')!== FALSE) { $fail = TRUE; if(preg_match("#^create table#i",$clean)) $fail = FALSE; $error="unusual character"; } //老版本的Mysql并不支持union，常用的程序里也不使用union，但是一些黑客使用它，所以检查它 if (strpos($clean, 'union') !== FALSE && preg_match('~(^|[^a-z])union($|[^[a-z])~s', $clean) != 0) { $fail = TRUE; $error="union detect"; } //发布版本的程序可能比较少包括--,#这样的注释，但是黑客经常使用它们 elseif (strpos($clean, '/*') > 2 || strpos($clean, '--') !== FALSE || strpos($clean, '#') !== FALSE) { $fail = TRUE; $error="comment detect"; } //这些函数不会被使用，但是黑客会用它来操作文件，down掉数据库 elseif (strpos($clean, 'sleep') !== FALSE && preg_match('~(^|[^a-z])sleep($|[^[a-z])~s', $clean) != 0) { $fail = TRUE; $error="slown down detect"; } elseif (strpos($clean, 'benchmark') !== FALSE && preg_match('~(^|[^a-z])benchmark($|[^[a-z])~s', $clean) != 0) { $fail = TRUE; $error="slown down detect"; } elseif (strpos($clean, 'load_file') !== FALSE && preg_match('~(^|[^a-z])load_file($|[^[a-z])~s', $clean) != 0) { $fail = TRUE; $error="file fun detect"; } elseif (strpos($clean, 'into outfile') !== FALSE && preg_match('~(^|[^a-z])into\s+outfile($|[^[a-z])~s', $clean) != 0) { $fail = TRUE; $error="file fun detect"; } //老版本的MYSQL不支持子查询，我们的程序里可能也用得少，但是黑客可以使用它来查询数据库敏感信息 elseif (preg_match('~\([^)]*?select~s', $clean) != 0) { $fail = TRUE; $error="sub select detect"; } if (!empty($fail)) { fputs(fopen($log_file,'a+'),"$userIP||$getUrl||$db_string||$error\r\n"); exit("Safe Alert: Request Error step 2!"); } else { return $db_string; } } }