ezyang / ezyang/htmlpurifier

Adding additional protocol handlers to URI.AllowedSchemes

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Dominant language
PHP
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Description

It looks like a few fairly popular protocol handlers are being stripped out by purifier. Could URI.AllowedSchemes be extended to allow options for:

  • sms:
  • callto:
  • fax:

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating URI.AllowedSchemes in HTML Purifier and trace how protocol schemes are checked or stripped. Add support for sms:, callto:, and fax:, then verify that purifier preserves links using each scheme without weakening handling of other schemes.

Written by the indexing model from the issue text.

Assessment

Tech stack
php
Domain
security
Issue type
Feature
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
48/100

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