FormDump - Dumps HTML form data

FormDump - Form Decoder and Dumper

This sample illustrates how to write an ISAPI Extension DLL that can be used to obtain form data from a web browser, and also how to build a reply to the form.

FormDump first appeared in the first release of the Internet SDK. This version adds two useful features--output of the user account and a dump of all server variables.

FormDump's HttpExtensionProc does the following:

1. Sends the header of the HTML response
2. Parses inbound form fields and send them back as HTML
3. Determines the security context in which the thread is running, and return the domain and user as HTML
4. Uses GetServerVariable to retrieve all server variables, and send them back as HTML
5. Sends the footer of the HTML resoponse
6. Returns control to IIS

Along with the basic HTML output functions found in the original version of FormDump, this version adds HtmlPrintf(). See html.h and html.cpp for details.

Here is an example of how this utility works. If you submit this form to FormDump.Dll, it shows you the values that the various form parameters were decoded to.

You can use FormDump.Dll with any form. It is useful in understanding how data comes in from the web browser.

This is a GET operation

This is a POST operation