https://github.com/khaledhosny/ots

Sanitizer for OpenType
https://github.com/khaledhosny/ots

Last synced: 4 days ago
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Sanitizer for OpenType

• Host: GitHub
• URL: https://github.com/khaledhosny/ots
• Owner: khaledhosny
• License: bsd-3-clause
• Created: 2014-01-15T20:36:53.000Z (almost 11 years ago)
• Default Branch: main
• Last Pushed: 2024-10-09T11:04:07.000Z (2 months ago)
• Last Synced: 2024-10-13T14:15:20.951Z (about 2 months ago)
• Language: C++
• Homepage:
• Size: 40.6 MB
• Stars: 263
• Watchers: 29
• Forks: 63
• Open Issues: 14
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-typography - OpenType Sanitiser - The OpenType Sanitiser (OTS) parses and serialises OpenType files (OTF, TTF) and WOFF and WOFF2 font files, validating them and sanitising them as it goes. (Font Validator / Free)

README

        
[![Build](https://github.com/khaledhosny/ots/actions/workflows/ci.yml/badge.svg)](https://github.com/khaledhosny/ots/actions/workflows/ci.yml)

[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/ots.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:ots)

OpenType Sanitizer

==================

The OpenType Sanitizer (OTS) parses and serializes OpenType files (OTF, TTF)

and WOFF and WOFF2 font files, validating them and sanitizing them as it goes.

The C library is integrated into Chromium and Firefox, and also simple

command line tools to check files offline in a terminal.

The CSS [font-face property][1] is great for web typography. Having to use images

in order to get the correct typeface is a great sadness; one should be able to

use vectors.

However, on many platforms the system-level TrueType font renderers have never

been part of the attack surface before, and putting them on the front line is

a scary proposition... Especially on platforms like Windows, where it's a

closed-source blob running with high privilege.

Building from source

--------------------

Instructions below are for building standalone OTS utilities, if you want to

use OTS as a library then the recommended way is to copy the source code and

integrate it into your existing build system. Our build system does not build a

shared library intentionally.

Build OTS:

    $ meson setup build

    $ meson compile -C build

Run `ots-sanitize`, for example:

    $ ./build/ots-sanitize path/to/font/file

Run the tests (if you wish):

    $ meson test -C build

Usage

-----

See [docs](docs)

* * *

Thanks to Alex Russell for the original idea.

[1]: http://www.w3.org/TR/CSS2/fonts.html#font-descriptions