PDF Link Editor (WordPress)

contains legacy code, update. use as reference only.

Small WordPress widget + shortcode that swaps a tagged placeholder in a PDF with a user-supplied link and returns a downloadable copy. Includes a simple license check hook and a temporary file cleaner.

What this does

• Expects a base PDF at wp-content/uploads/custom.pdf with a placeholder tag (default [affid]).
• Replaces that tag with a user-provided link (strips http:// / https://), writes a copy, and serves it for download.
• Creates a Temp folder inside the plugin directory for generated files and deletes files older than 10 minutes.
• Provides both a WordPress widget and a [PDFLINKEDIT] shortcode form.

Requirements

• WordPress with plugin upload rights.
• PHP 7.0+ and permission to create/write wp-content/plugins/PdfLinkEditor/Temp.
• A template PDF at wp-content/uploads/custom.pdf containing the placeholder tag you want replaced.

Quick start

1. Copy the plugin folder to wp-content/plugins/PdfLinkEditor/ and activate PDF Link Marker in wp-admin.
2. Upload your template PDF to wp-content/uploads/custom.pdf (update the path in includes/Pdfgenerator*.php if you keep it elsewhere).
3. Set your placeholder tag (e.g., [affid]) inside the PDF.
4. Choose one of the usage options below.

Usage

Widget (wp-admin > Appearance > Widgets)

• Drag PDF Link Editor into a sidebar.
• Configure:
  • License Key: Checked against your license server (see “Licensing notes”).
  • Title: Optional heading above the form.
  • Description above/below: Helper text around the form.
  • Default Tag: Tag that will be replaced in the PDF.

Shortcode

• Insert [PDFLINKEDIT] into a page or post.
• The bundled markup posts to includes/Pdfgenerator_Shortcode.php and uses hidden inputs:

[PDFLINKEDIT]

If you want to hand-roll the form, mirror the hidden tag and key fields and POST to Pdfgenerator_Shortcode.php.

What the form does

• Accepts a link, strips protocol, replaces the placeholder tag in the template PDF, and forces a download of the generated file.

File map (quick reference)

• PdfLinkEditor.php: Plugin bootstrap, widget registration, shortcode output.
• includes/PdfLinkEditor-class.php: Widget admin + front-end rendering and license check.
• includes/Pdfgenerator.php: Handles widget form submission, creates/downloads the PDF copy.
• includes/Pdfgenerator_Shortcode.php: Same as above but for the shortcode form, with license check.
• includes/LinkReplacer.php: Simple string replace helper for the PDF content.
• includes/CleanTempFolder.php: Deletes temp PDFs older than 10 minutes.
• css/bootstrap.min.css, js/main.js: Enqueued assets.
• Misc/ShortCode.html: Standalone HTML example of the shortcode form.

Licensing notes

• The code currently points to a local license server (http://localhost/wordpress) with sample secret keys. Update SECRET_KEY, LICENSE_SERVER_URL, and form hidden key values before production use.
• License checks are performed via simple GET requests; ensure your license server is reachable over HTTPS and that keys are stored securely.

Security and data handling

• Generated PDFs are stored in wp-content/plugins/PdfLinkEditor/Temp and deleted after ~10 minutes. If you need longer retention or a different path, adjust $PDF_avail_time and $tempFolderPath in includes/Pdfgenerator*.php.
• Input is lightly sanitized (protocol stripped). For public deployments consider additional validation (allowed domains, length limits) and HTTPS everywhere.
• PDF modification is a plain text replace. It assumes the placeholder exists as text in the PDF; it does not rewrite embedded link objects.

Developing

• Enqueued assets: PdfLinkEditor-scripts.php hooks Bootstrap + js/main.js on the front end.
• To change the template path or tag, edit includes/Pdfgenerator.php and includes/Pdfgenerator_Shortcode.php.
• Keep PHP error display off in production; current files set error_reporting(0).

License

This project is provided as it is without warranty. Use at your own risk.