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skeud

Simple and portable utilities to deal with user accounts (su, login)

README.md (1381B)

    

  1. # skeud: Simple and portable utilities to deal with user accounts (su, login)
  3. skeud /skød/ (Brezhoneg): shadow / reflection / ghost
  5. Status: Experimental, enough done to work but needs thorough review.
  7. ## Features
  8. - Based on `getpwnam(3)` (and `getspnam(3)` on Linux), making it compatible with systems like [tcb shadow](https://www.openwall.com/tcb/)
  10. ## Dependencies
  11. - POSIX Environment
  12. - libc with `termios.h`
  13. - Proper support for static executables (glibc is out)
  14. - `/dev/tty` file pointing to currently attached console
  15. - (test-only) [ATF](https://github.com/jmmv/atf)
  16. - (test-only) [Kyua](https://github.com/jmmv/kyua)
  17. - (lint-only) [reuse](https://reuse.software/)
  18. - (lint-only) [flawfinder](https://github.com/jmmv/kyua)
  19. - (lint-only) [mandoc](https://mdocml.bsd.lv/)
  21. ## Unsupported
  22. - Broken authentication systems like PAM and [nsswitch](https://skarnet.org/software/nsss/nsswitch.html)
  23. - Remote host arguments (believed to be legacy)
  24. - `/etc/login.defs` configuration file
  25. - Checking for emails, consider using `/etc/profile` or `~/.profile` instead
  26. - Dangerous features:
  27.   - empty password field disabling authentication
  28. - `utmp` / `wtmp`: Prone to corrupting itself and can be faked
  29. - OS-specific utilities like `passwd`, `useradd`, `gpasswd`, …
  31. <!--
  32. Copyright © 2022 Haelwenn (lanodan) Monnier <contact+skeud@hacktivis.me>
  33. SPDX-License-Identifier: MPL-2.0
  34. -->