[ENG] Process of JS in PDF at Adobe

[Fig 1] The process of handling JS script embedded in PDF at Adobe Acrobat Reader DC

• PDF can have embedded JavaScript code, and Adobe executes this.
• The JS Engine, SpiderMonkey, executes this embedded JS Script using EScript.api in Adobe.
  • JS Engine, SpiderMonkey used by Adobe is implemented in C++.
• If the URL is defined in the PDF, Adobe performs related to URL and Internet access using IA32.api.
• We can send the two types of URL to Adobe with PDF.

  1. base URL

     • The base URL means the base of the URL such as https://….
     • We can send the base URL to Adobe by setting the object in the PDF.

     11 0 obj
     <<
     /Base <FEFF68747470733A2F2F7777772E61612E636F6D2F414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141412F>
     >>
     endobj

  ---

  2. relative URL

     • The relative URL means the URL comes out after the base URL.
     • We can send a relative URL to Adobe by passing the relative URL as the parameter of functions related to Internet access with JS script embedded in the PDF.
     • We can do this using the functions, this.submitForm(), app.launchURL(), etc.

     try {
       this.submitForm('relative URL');
     } catch (err) { }

Feedback is always welcome