允许HTML的AJAX回调

时间:2013-08-13 22:30:02

标签: asp.net ajax

我的网站上有一个评论表单,我想阻止任何HTML通过它发布。我的印象是ASP.NET通过抛出“潜在危险请求”异常自动阻止提交任何HTML,但在这种情况下它允许HTML。

与验证相关的所有设置都保留为默认设置,因此应将其设置为requestValidationMode="4.0"

任何人都知道是什么原因造成的?这与我使用AJAX回调的事实有什么关系吗?

编辑:我收集了更多细节:

验证在我的应用程序中的一个子文件夹中正常工作,但它不适用于任何其他子文件夹。我查看了我的web.config,这是我对页面验证的唯一设置:

<pages enableViewStateMac="true" validateRequest="true">

为什么它在一个子文件夹中工作而在其他子文件夹中不工作?是否与此子文件夹有关于身份验证的web.config条目有关?

编辑:正在验证常规回发,而不是回调。

再次编辑:我正在和Fiddler一起玩,在这样做时我注意到其中一个回调被服务器阻止了。以下是被阻止的请求:

这是纯文本版本:

Good Request

__EVENTTARGET=&__EVENTARGUMENT=&__VIEWSTATE=%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%2BCjwvc2NyaXB0Pgo8c2NyaXB0IHR5cGU9InRleHQvamF2YXNjcmlwdCIKc3JjPSJodHRwOi8vcGFnZWFkMi5nb29nbGVzeW5kaWNhdGlvbi5jb20vcGFnZWFkL3Nob3dfYWRzLmpzIj4KPC9zY3JpcHQ%2BZAIDDxYCHwIFqgI8c2NyaXB0IHR5cGU9InRleHQvamF2YXNjcmlwdCI%2BPCEtLQpnb29nbGVfYWRfY2xpZW50ID0gImNhLXB1Yi05NjEzNjkwNDkwNTI4ODE0IjsKLyogQk9JRyBTaWRlYmFyICovCmdvb2dsZV9hZF9zbG90ID0gIjIyMDAxMDYxMTAiOwpnb29nbGVfYWRfd2lkdGggPSAxNjA7Cmdvb2dsZV9hZF9oZWlnaHQgPSA2MDA7Ci8vLS0%2BCjwvc2NyaXB0Pgo8c2NyaXB0IHR5cGU9InRleHQvamF2YXNjcmlwdCIKc3JjPSJodHRwOi8vcGFnZWFkMi5nb29nbGVzeW5kaWNhdGlvbi5jb20vcGFnZWFkL3Nob3dfYWRzLmpzIj4KPC9zY3JpcHQ%2BZAIEDw8WAh4HVmlzaWJsZWdkZAIFDxYCHwIFEjxwPkxpbmsgMSB0ZXh0PC9wPmQCBg9kFgICAw8WAh8DaGQCBw8WAh4EVGV4dAU%2BPHNwYW4gc3R5bGU9Im1hcmdpbi1yaWdodDogNXB4OyI%2BwqkgQmluZGluZ09mSXNhYWNHdWlkZTwvc3Bhbj5kZKMbP1fMlxWhgVw8zpEPBPGzlw5j&=sdfdsgd%40sfds.com&=%3Cp%3Efghfghfg%3C%2Fp%3E&=%3Cp%3Efghfghfg%3C%2Fp%3E&=%3Cp%3Efghfghfg%3C%2Fp%3E&__CALLBACKID=__Page&__CALLBACKPARAM=sdfdsgd%40sfds.com--%7C%7C--%3Cp%3Efghfghfg%3C%2Fp%3E--%7C%7C--%3Cp%3Efghfghfg%3C%2Fp%3E--%7C%7C--%3Cp%3Efghfghfg%3C%2Fp%3E

以下是未阻止的典型请求:

纯文字:

Bad Request

__EVENTTARGET=&__EVENTARGUMENT=&__VIEWSTATE=%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%2BCjwvc2NyaXB0Pgo8c2NyaXB0IHR5cGU9InRleHQvamF2YXNjcmlwdCIKc3JjPSJodHRwOi8vcGFnZWFkMi5nb29nbGVzeW5kaWNhdGlvbi5jb20vcGFnZWFkL3Nob3dfYWRzLmpzIj4KPC9zY3JpcHQ%2BZAIDDxYCHwIFqgI8c2NyaXB0IHR5cGU9InRleHQvamF2YXNjcmlwdCI%2BPCEtLQpnb29nbGVfYWRfY2xpZW50ID0gImNhLXB1Yi05NjEzNjkwNDkwNTI4ODE0IjsKLyogQk9JRyBTaWRlYmFyICovCmdvb2dsZV9hZF9zbG90ID0gIjIyMDAxMDYxMTAiOwpnb29nbGVfYWRfd2lkdGggPSAxNjA7Cmdvb2dsZV9hZF9oZWlnaHQgPSA2MDA7Ci8vLS0%2BCjwvc2NyaXB0Pgo8c2NyaXB0IHR5cGU9InRleHQvamF2YXNjcmlwdCIKc3JjPSJodHRwOi8vcGFnZWFkMi5nb29nbGVzeW5kaWNhdGlvbi5jb20vcGFnZWFkL3Nob3dfYWRzLmpzIj4KPC9zY3JpcHQ%2BZAIEDw8WAh4HVmlzaWJsZWdkZAIFDxYCHwIFEjxwPkxpbmsgNSB0ZXh0PC9wPmQCBg9kFgICAw8WAh8DaGQCBw8WAh4EVGV4dAU%2BPHNwYW4gc3R5bGU9Im1hcmdpbi1yaWdodDogNXB4OyI%2BwqkgQmluZGluZ09mSXNhYWNHdWlkZTwvc3Bhbj5kZCu6t45MzsFLBRWYDAvPXYbIXKqE&=&=&=&=&__CALLBACKID=__Page&__CALLBACKPARAM=cfdsdg%40adfds.com--%7C%7C--%3Cp%3Esdfdgdfg%3C%2Fp%3E--%7C%7C--%3Cp%3Esdfdgdfg%3C%2Fp%3E--%7C%7C--%3Cp%3Esdfdgdfg%3C%2Fp%3E

我不知道为什么请求不同,页面上没有任何变化。我注意到第一个似乎将参数分成了盒子而第二个没有。这是问题吗?

我刚检查了从子文件夹发送的回调,它们都被分割成参数,就像第一个请求一样。我想这就是问题......但为什么会这样呢?

我输入runat=server并且请求发生了一些变化,但仍未分配值。

Semi-Good Req

1 个答案:

答案 0 :(得分:0)

这是我发现的:

___ CALLBACKPARAM实际上并未由服务器验证,只有第一张图片中显示的参数。考虑到这一点,我使用以下正则表达式<\/*(p|div|span|a|script|br|b|i|u|h1|h2|h3|ol|ul|li)\s*.*>自行验证了请求。你可以在网上找到更多;希望这有帮助。