[OpenSIPS-Devel] [OpenSIPS/opensips] 5bdac5: stir_shaken VS: Improve several return codes

[Liviu Chircu]

  Branch: refs/heads/3.3
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 5bdac5e58b54c5fb50edabd0c71aac3e2b9f531f
      https://github.com/OpenSIPS/opensips/commit/5bdac5e58b54c5fb50edabd0c71aac3e2b9f531f
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2023-09-27 (Wed, 27 Sep 2023)

  Changed paths:
    M modules/stir_shaken/stir_shaken.c

  Log Message:
  -----------
  stir_shaken VS: Improve several return codes

* on bad client-side signature length, return
   "438 Invalid Identity Header (bad signature)"
   vs. "500 Internal Server Error" (??)

* on encountering expired certificates advertised by clients, return
    "438 Invalid Identity Header (cert validity)"
    vs. "403 Stale Date" (?!)

* fix abs() related compiler warnings introduced earlier

(cherry picked from commit e2977a4f49f1a164369c515bb7a79b5b436aeb31)