Thom Parker's PDF Stamps - "Security settings prevent access to this property or method"

[ecki22253732]

Hello -

I've been successful in creating a custom Balloon stamp, using the guidelines from Thom Parker'as excellent book "All ABout PDF Stamps..".

However, when I move my stamp PDF to my user's PC, I get this error:

NotAllowedError: Security settings prevent access to this property or method.

Info.exhibit:8:App UserData2:Calculate

Again, it works on my PC.

I've been searching and working on this on and off for a few weeks, and I am not making progress. Do I need to go the "trusted function" route?

What am I missing?

Thanks very much in Advance,

Brian

[Karl Heinz Kremer]

Are you trying to use this stamp with the free Adobe Reader? If so, you cannot write to document properties (via the Info object). See here for more information: https://help.adobe.com/en_US/acrobat/acrobat_dc_sdk/2015/HTMLHelp/index.html#t=Acro12_MasterBook%2FJ...

[ecki22253732]

Yes, we're using the free Adobe Reader DC.  I'm beginning to see that things have changed a bit since the book was published...

[Karl Heinz Kremer]

Actually, this is not a new restriction. It's been a while since I worked through the book, but I am pretty confident that Thom does talk about this restriction.

[gkaiseril]

What is the version on of Acrobat/Reader on the user's PC?

If it is 7.0 or greater, then you you need to use the privileged context.

What is the script that is running in the stamp?

[ecki22253732]

The script is:

var cAsk = "Enter Number" ;

var cTitle = "Balloon Number:  ";

if(event.source.forReal && (event.source.stampName == "#Balloon"))

{

  var cMsg = app.response(cAsk, cTitle);

  event.value = cMsg;

  event.source.source.info.exhibit = cMsg;

}

[try67]

If you're only interested in the stamp, and not in saving the user's input into the file's metadata, just remove that line from the code.

[Thom Parker · Accepted solution]

If you are using the stamp in Acrobat Reader, then saving stamp data into the document is a problem.  There are some possible replacements, but it all depends on your objective.

Is it important to save the data on a per document basis? or could it be saved globally? Does data need to persist across Acrobat sessions? You might want to re-read the Chapter 8 section "Data Storage and Persistence"

[ecki22253732]

Ah Ha!!  That is my issue - I did not realize that this script was saving the input locally for potential re-use later (as in an auto-incrementing balloon number).  I should know better than to just copy code without thoroughly understanding it.

Try67, thanks for your insight, and Thom, thanks for the insight and your great book. I haven't gotten to Chapter 8 because I thought I didn't need to worry about more complicated programming. I guess I did, so I could create simpler programming...

Thanks to everyone who replied - this sure is a responsive and thoughtful community!

Brian

[Rich_33608]

Thanks all for the great information. Thom thanks a bunch!