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Allow render HTML with css/js external links (#19017)

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* Allow render HTML with css/js external links

* Fix bug because of filename escape chars

* Fix lint

* Update docs about new configuration item

* Fix bug of render HTML in sub directory

* Add CSP head for displaying iframe in rendering file

* Fix test

* Apply suggestions from code review

Co-authored-by: delvh <dev.lh@web.de>

* Some improvements

* some improvement

* revert change in SanitizerDisabled of external renderer

* Add sandbox for iframe and support allow-scripts and allow-same-origin

* refactor

* fix

* fix lint

* fine tune

* use single option RENDER_CONTENT_MODE, use sandbox=allow-scripts

* fine tune CSP

* Apply suggestions from code review

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
This commit is contained in:
Lunny Xiao 2022-06-16 11:33:23 +08:00 • committed by GitHub
parent 7d1770cd71
commit b01dce2a6e
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17 changed files with 248 additions and 93 deletions
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7
custom/conf/app.example.ini
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@ -2181,8 +2181,11 @@ PATH =
;RENDER_COMMAND = "asciidoc --out-file=- -"
;; Don't pass the file on STDIN, pass the filename as argument instead.
;IS_INPUT_FILE = false
; Don't filter html tags and attributes if true
;DISABLE_SANITIZER = false
;; How the content will be rendered.
;; * sanitized: Sanitize the content and render it inside current page, default to only allow a few HTML tags and attributes. Customized sanitizer rules can be defined in [markup.sanitizer.*] .
;; * no-sanitizer: Disable the sanitizer and render the content inside current page. It's **insecure** and may lead to XSS attack if the content contains malicious code.
;; * iframe: Render the content in a separate standalone page and embed it into current page by iframe. The iframe is in sandbox mode with same-origin disabled, and the JS code are safely isolated from parent page.
;RENDER_CONTENT_MODE=sanitized
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