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How to validate CSRF token with session

Revision #4 has been created by yangmls on Nov 21, 2011, 12:50:31 PM with the memo:

some spell errors
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How to validate CSRF token with session

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How-tos

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CSRF, session

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[...]
Note: When you ebable CSRF validation and use form builder to generate a form(only post), Yii will auto generate a hidden field and put it in the form, at the same time, Yii will create a cookie with CSRF token. When you submit the form, Yii will compare two CSRF tokens from post and cookie.

What Problem Will Happen
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1.The user client DOES NOT accept cookie. 2.The user client CAN NOT send a request with cookie.
 

For example: upload file use flash (swfupload)
[...]
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If user does nothing too long time, the session will be removed by session gc. In that caste, CSRF validation will raise a 400 HTTP exception.

The default session timeout in php5 is 1440(may be not exact), your can use function ini_get('session.gc_maxlifetime') to view the default timeout and use the function ini_set('session.gc_maxlifetime', $timeout) to set.

In Yii, We hava a easy way to set. Just change the session component config.
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Viewed: 102 520 times
Version: 1.1
Category: How-tos
Tags: CSRF, session
Written by: yangmls
Last updated by: yangmls
Created on: Nov 21, 2011
Last updated: 13 years ago
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