我不想缓存输入,这看起来像SQL注入。所以我写的方法:用于在WinForms中检测SQL注入的正则表达式
public static bool IsInjection(string inputText)
{
bool isInj = false;
string regexForTypicalInj = @"/\w*((\%27)|(\'))((\%6F)|o|(\%4F))((\%72)|r|(\%52))/ix";
Regex reT = new Regex(regexForTypicalInj);
if (reT.IsMatch(inputText))
isInj = true;
string regexForUnion = @"/((\%27)|(\'))union/ix";
Regex reUn = new Regex(regexForUnion);
if (reUn.IsMatch(inputText))
isInj = true;
string regexForSelect = @"/((\%27)|(\'))select/ix";
Regex reS = new Regex(regexForSelect);
if (reS.IsMatch(inputText))
isInj = true;
string regexForInsert = @"/((\%27)|(\'))insert/ix";
Regex reI = new Regex(regexForInsert);
if (reI.IsMatch(inputText))
isInj = true;
string regexForUpdate = @"/((\%27)|(\'))update/ix";
Regex reU = new Regex(regexForUpdate);
if (reU.IsMatch(inputText))
isInj = true;
string regexForDelete = @"/((\%27)|(\'))delete/ix";
Regex reDel = new Regex(regexForDelete);
if (reDel.IsMatch(inputText))
isInj = true;
string regexForDrop = @"/((\%27)|(\'))drop/ix";
Regex reDr = new Regex(regexForDrop);
if (reDr.IsMatch(inputText))
isInj = true;
string regexForAlter = @"/((\%27)|(\'))alter/ix";
Regex reA = new Regex(regexForAlter);
if (reA.IsMatch(inputText))
isInj = true;
string regexForCreate = @"/((\%27)|(\'))create/ix";
Regex reC = new Regex(regexForCreate);
if (reC.IsMatch(inputText))
isInj = true;
return isInj;
}
但似乎我犯了一些错误,因为我的代码没有检测到注入。我做错了什么?我猜在定义Regex表达式时会出现错误吗?
您首先不使用参数化查询的原因是什么?确切地说,是 – JasonTrue 2010-02-24 21:09:40
http://xkcd.com/327/ – Ken 2010-02-24 21:11:50
。参数化查询=已消毒。用正则表达式来完成解析器的工作=疯狂。 – JasonTrue 2010-02-24 21:19:59