Hotmail搞乱了编码的URL参数 [英] Hotmail messing with encoded URL parameters

问题描述

我们有一个系统可以发送常规的电子邮件链接，其中许多包含URL编码参数，如：

  href =http://www.mydomain.com/login.aspx?returnurl=http%3A%2F%2Fwww.mydomain.com%2Fview.aspx%3Fid%3D1234%26alert%3Dtrue
  

您可以看到returnurl参数被编码。然而，似乎我们的大量用户（似乎是Hotmail）正在接收电子邮件，这些参数被部分解码为，例如：

  HREF =http://www.mydomain.com/login.aspx?returnurl=http://www.mydomain.com/view.aspx?view.aspx%3Fid%3D1234%26alert ％3Dtrue
  

为什么会这样解码？为什么只部分解码？因此，我不知道如何处理。我想到base-64编码，但是base64字符串包含需要解码的字符...我想到了双编码，但后来我不知道是否双重解码参数...任何人都可以帮助？谢谢。

解决方案

可能发生的一个原因是因为用于编码的url规则之前和之后是不同的 ？所以如果正在进行解码的机制是从URL和苹果查询解码规则的后面，直到找到第一个？，那么这可能会导致你正在描述的问题...

不知道如何处理它，尽管我理解的系统，这种不正确的解码是在你的控制之外。我会尝试隐藏？返回url查询某种方式...

We have a system that sends out regular emails with links in, many of which contain URL encoded parameters such as this:

href="http://www.mydomain.com/login.aspx?returnurl=http%3A%2F%2Fwww.mydomain.com%2Fview.aspx%3Fid%3D1234%26alert%3Dtrue"

You can see that the "returnurl" parameter is encoded. However, it seems that a large number of our users (seemingly hotmail) are receiving the emails with this paramater partly decoded such as:

href="http://www.mydomain.com/login.aspx?returnurl=http://www.mydomain.com/view.aspx?view.aspx%3Fid%3D1234%26alert%3Dtrue"

Why would it decode like this? Why only partly decode?? I therefore have no idea how to deal with it. I thought of base-64 encoding but that base64 strings contain characters that would need decoding too... I thought of double encoding but then I will not know whether to double-decode the parameter or not... Can anyone help? Thanks.

解决方案

One reason this could be happening is because url rules for encoding are different before and after ? so if mechanism that is doing decoding does it from the 'back' of url and apples query decoding rules until it finds first ? then this could cause problem you are describing...

Not sure how to deal with it though as I understand system that does this inappropriate decoding is outside of your control. I would try to hide the ? in return url query somehow...

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