How can we validate whether attachment is PDF or word file or image or excel file

[kranthi2]

Hi,

Can some one will help on How can we validate whether attachment is PDF or word file or image or excel file.

I want a functionality that 

For some of the users i want only PDF format is only able to submit 

For some of the users i want only excel files only submit 
for some of the users i want to only image formats

Is it possible to validate the attachments

[Mark Manders]

Maybe subscribe to this one: https://www.servicenow.com/community/itsm-forum/how-can-we-validate-whether-attachment-is-pdf-or-wor...

[Shivam Techlene]

Hi @kranthi2 ,

I think this is not reproducible. Cause we cannot verify the extension/type of the attachment before it has been uploaded and stored in the "sys_attachment" table. In your case, we can do one thing, we can delete the uploaded attachment if it's type doesn't comply with the current logged in user/group once it is stored in the attachment table and display an error message to the user.

Kindly mark my response helpful and correct if it helps your understanding.

[Adam43]

does any of this validation actually examine the coding of the file of just look at the attachment's extension value?  ie- can it check for if someone just changed the name of the file from virusmalware.exe to safe.pdf  ?

[Mark Manders]

No. An attachment is an attachment and the extension is evaluated. The Antivirus config will take care of content that can be dangerous, no matter the extension.