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[stable24] disable scripting in pdfviewer #892

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merged 2 commits into from
Jan 18, 2024
Merged

[stable24] disable scripting in pdfviewer #892

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d1851f7
disable scripting in pdfviewer
szaimen Jan 18, 2024
1b04a7e
chore(assets): Recompile assets
nextcloud-command Jan 18, 2024
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10 changes: 10 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,16 @@ files_pdfviewer
This application integrates the [PDF.js](https://mozilla.github.io/pdf.js/) library into Nextcloud's Viewer.
You can view PDF files as well as Adobe Illustrator files (.ai)

### Enable Javascript execution in PDF files

To allow Javascript embedded in PDF-files to be executed inside the PDF-viewer inside your browser, enable it with:

`php occ config:app:set files_pdfviewer enable_scripting --value=yes`

Disable:

`php occ config:app:delete files_pdfviewer enable_scripting`

## 🏗 Development setup

1. ☁ Clone this app into the `apps` folder of your Nextcloud: `git clone https://github.com/nextcloud/files_pdfviewer.git`
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4 changes: 2 additions & 2 deletions js/files_pdfviewer-workersrc.js
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2 changes: 1 addition & 1 deletion js/files_pdfviewer-workersrc.js.map
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2 changes: 2 additions & 0 deletions src/workersrc.js
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Expand Up @@ -33,7 +33,7 @@
const urlParams = new URLSearchParams(queryString)
const canDownload = urlParams.get('canDownload')

function initializeCustomPDFViewerApplication() {

Check warning on line 36 in src/workersrc.js

View workflow job for this annotation

GitHub Actions / eslint 

Missing JSDoc comment
const head = document.getElementsByTagName('head')[0]

// Preferences override options, so they must be disabled for
Expand All @@ -44,7 +44,9 @@
PDFViewerApplicationOptions.set('isEvalSupported', false)
PDFViewerApplicationOptions.set('workerSrc', head.getAttribute('data-workersrc'))
PDFViewerApplicationOptions.set('cMapUrl', head.getAttribute('data-cmapurl'))
PDFViewerApplicationOptions.set('sandboxBundleSrc', head.getAttribute('data-sandbox'))
PDFViewerApplicationOptions.set('enablePermissions', true)
PDFViewerApplicationOptions.set('enableScripting', head.getAttribute('data-enableScripting') === true)

if (canDownload === '0') {
const pdfViewer = window.document.querySelector('.pdfViewer')
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6 changes: 6 additions & 0 deletions templates/viewer.php
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Expand Up @@ -3,6 +3,10 @@
/** @var OCP\IURLGenerator $urlGenerator */
$urlGenerator = $_['urlGenerator'];
$version = \OC::$server->getAppManager()->getAppVersion('files_pdfviewer');
$enableScripting = false;
if (\OC::$server->getConfig()->getAppValue('files_pdfviewer', 'enable_scripting', 'no') === 'yes') {
$enableScripting = true;
}
?>

<!DOCTYPE html>
Expand All @@ -29,6 +33,8 @@
-->
<html dir="ltr" mozdisallowselectionprint>
<head data-workersrc="<?php p($urlGenerator->linkTo('files_pdfviewer', 'js/pdfjs/build/pdf.worker.js')) ?>?v=<?php p($version) ?>"
data-enableScripting="<?php p($enableScripting ? true : false) ?>"
data-sandbox="<?php p($urlGenerator->linkTo('files_pdfviewer', 'js/pdfjs/build/pdf.sandbox.js'))?>"
data-cmapurl="<?php p($urlGenerator->linkTo('files_pdfviewer', 'js/pdfjs/web/cmaps/')) ?>">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
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