Inspiring

Question

Determining if a PDF is signed using CFPDFFORM

Forum|Forum|14 years ago
June 13, 2011
1 reply
928 views

I have a PDF which contains form data, including multiple signature fields. Is there a means to determine if any of the signatures within the PDF form have been filled programmatically? When I use the CFPDFFORM ACTION="read" tag, it only returns those fields which are not signature fields.

Much regards

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Inspiring

Answered my own question in the form of a function, this accepts a PDF file and returns a list of all signed signature fields names.

<cffunction name="pdfGetSignedFields" returntype="string" output="false">
<cfargument name="pgsFile" type="string" required="yes">
<cfset pgsAns="">
<cfif FileExists(pgsFile)>
<cfset pgsReader=CreateObject("java","com.lowagie.text.pdf.PdfReader").init(pgsFile)>
<cfset pgsAcroFields=pgsReader.getAcroFields()>
<cfset pgsAns=ArrayToList(pgsAcroFields.getSignatureNames(),",")>
</cfif>
<cfreturn pgsAns>
</cffunction>

Participating Frequently

Don't forget to var scope your function variables.

Inspiring

Good point...

<cffunction name="pdfGetSigned" returntype="string" output="false">
<cfargument name="pgsFile" type="string" required="yes">
<cfset var.pgsAns="">
<cfif FileExists(pgsFile)>
<cfset var.pgsReader=CreateObject("java","com.lowagie.text.pdf.PdfReader").init(pgsFile)>
<cfset var.pgsAcroFields=var.pgsReader.getAcroFields()>
<cfset var.pgsAns=ArrayToList(var.pgsAcroFields.getSignatureNames(),",")>
</cfif>
<cfreturn var.pgsAns>
</cffunction>