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DedeV6
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更新sql操作方法

tags/6.2.0
tianya 2 years ago
parent
746dfa054a
commit
e924e70c7b
3 changed files with 102 additions and 182 deletions
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  1. +90
    -0
      src/system/common.func.php
  2. +6
    -91
      src/system/database/dedesqli.class.php
  3. +6
    -91
      src/system/database/dedesqlite.class.php

+ 90
- 0
src/system/common.func.php View File

@@ -137,6 +137,96 @@ function dede_random_bytes($length)
}
return FALSE;
}
//SQL语句过滤程序，由80sec提供，这里作了适当的修改
if (!function_exists('CheckSql')) {
function CheckSql($db_string, $querytype = 'select')
{
global $cfg_cookie_encode;
$clean = '';
$error = '';
$old_pos = 0;
$pos = -1;
$enkey = substr(md5(substr($cfg_cookie_encode.'dedebiz', 0, 5)), 0, 10);
$log_file = DEDEDATA.'/checksql_'.$enkey.'_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("<span>Safe Alert: Request Error step 1 !</span>");
}
}
//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("<span>Safe Alert: Request Error step 2!</span>");
} else {
return $db_string;
}
}
}
/**
* 载入小助手,系统默认载入小助手
* 在/data/helper.inc.php中进行默认小助手初始化的设置


+ 6
- 91
src/system/database/dedesqli.class.php View File

@@ -473,7 +473,9 @@ class DedeSqli
}
function RecordLog($runtime = 0)
{
$RecordLogFile = DEDEDATA.'/mysqli_record_log.inc';
global $cfg_cookie_encode;
$enkey = substr(md5(substr($cfg_cookie_encode.'dedebiz', 0, 5)), 0, 10);
$RecordLogFile = DEDEDATA.'/mysqli_record_log_'.$enkey.'.inc';
$url = $this->GetCurUrl();
$savemsg = <<<EOT
@@ -489,7 +491,9 @@ EOT;
//显示数据链接错误信息
function DisplayError($msg)
{
$errorTrackFile = DEDEDATA.'/mysqli_error_trace.inc';
global $cfg_cookie_encode;
$enkey = substr(md5(substr($cfg_cookie_encode.'dedebiz', 0, 5)), 0, 10);
$errorTrackFile = DEDEDATA.'/mysqli_error_trace_'.$enkey.'.inc';
if ($this->showError) {
$msg = str_replace(array("\r","\n"),"",addslashes($msg));
ShowMsg("{$msg}", "javascript:;", -1);
@@ -522,93 +526,4 @@ EOT;
function CopySQLiPoint(&$ndsql)
{
$GLOBALS['dsqli'] = $ndsql;
}
//SQL语句过滤程序，由80sec提供，这里作了适当的修改
if (!function_exists('CheckSql')) {
function CheckSql($db_string, $querytype = 'select')
{
global $cfg_cookie_encode;
$clean = '';
$error = '';
$old_pos = 0;
$pos = -1;
$log_file = DEDEDATA.'/'.md5($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("<span>Safe Alert: Request Error step 1 !</span>");
}
}
//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("<span>Safe Alert: Request Error step 2!</span>");
} else {
return $db_string;
}
}
}

+ 6
- 91
src/system/database/dedesqlite.class.php View File

@@ -487,7 +487,9 @@ class DedeSqlite
}
function RecordLog($runtime = 0)
{
$RecordLogFile = DEDEDATA.'/mysqli_record_log.inc';
global $cfg_cookie_encode;
$enkey = substr(md5(substr($cfg_cookie_encode.'dedebiz', 0, 5)), 0, 10);
$RecordLogFile = DEDEDATA.'/mysqli_record_log_'.$enkey.'.inc';
$url = $this->GetCurUrl();
$savemsg = <<<EOT
@@ -503,7 +505,9 @@ EOT;
//显示数据链接错误信息
function DisplayError($msg)
{
$errorTrackFile = DEDEDATA.'/sqlite_error_trace.inc';
global $cfg_cookie_encode;
$enkey = substr(md5(substr($cfg_cookie_encode.'dedebiz', 0, 5)), 0, 10);
$errorTrackFile = DEDEDATA.'/sqlite_error_trace_'.$enkey.'.inc';
if ($this->showError) {
$msg = str_replace(array("\r","\n"),"",addslashes($msg));
ShowMsg("{$msg}", "javascript:;", -1);
@@ -536,93 +540,4 @@ EOT;
function CopySQLiPoint(&$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("<span>Safe Alert: Request Error step 1 !</span>");
}
}
//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("<span>Safe Alert: Request Error step 2!</span>");
} else {
return $db_string;
}
}
}

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