OSSL_LIB_CTX...F_DIAGNOSTICS(3ossl)

📦
version 15.1 · 2 versions
, in freebsd 15.1

💅 OSSL_LIB_CTX_set_conf_diagnostics / OSSL_LIB_CTX_get_conf_diagnostics (3ossl)

okay so bestie, this is one of those little OpenSSL pages that at first glance is giving "two tiny functions, nothing to see here" — but actually it's lowkey a whole vibe check for whether your config errors get to be seen or just get swallowed silently 😭. It lives in the 3ossl manual section, and yes it's the OpenSSL crew's work. Let's get into it 🎀

✨ NAME ✨

OSSL_LIB_CTX_set_conf_diagnostics, OSSL_LIB_CTX_get_conf_diagnostics — these are the setter and the getter for the configuration diagnostics flag. That's the whole thing. Two functions. One flag. Zero drama (unless you want the drama, in which case: turn the flag on 💅).

🌸 SYNOPSIS 🌸

#include <openssl/crypto.h>

void OSSL_LIB_CTX_set_conf_diagnostics(OSSL_LIB_CTX *ctx, int value);
int OSSL_LIB_CTX_get_conf_diagnostics(OSSL_LIB_CTX *ctx);

like, look at them. set takes your ctx and a value and returns nothing (it's a void, it's not here to give you feedback). get takes your ctx and hands you an int. iconic behaviour honestly 👑

🦋 DESCRIPTION 🦋

set it, bestie 💖

OSSL_LIB_CTX_set_conf_diagnostics() sets the value of the configuration diagnostics flag.

If value is nonzero, then subsequent parsing and application of configuration data can report errors that would otherwise be ignored. that's the whole plot twist — normally these errors are just not reported, quietly ignored, living their little lives. turn this on and they finally get a voice 🗣️

In particular, any errors in the ssl configuration module will cause a failure of SSL_CTX_new(3) and SSL_CTX_new_ex(3) calls. so like, no more silent weirdness from the ssl config module — it fails loudly instead. main character energy fr fr 🔥

ngl it's giving "strict mode for your OpenSSL config" and honestly? we stan a transparent error.

the loading-time override (this part matters!!) 😤

The configuration diagnostics flag can also be set when a configuration file is being loaded into OSSL_LIB_CTX with OSSL_LIB_CTX_load_config(3).

And here's the tea: if the configuration sets a config_diagnostics value as described in config(5), it will override the value set by OSSL_LIB_CTX_set_conf_diagnostics() before loading the configuration file. so your pre-set flag isn't the final word — the config file gets to overrule it. noted. ✍️

get it 💅

OSSL_LIB_CTX_get_conf_diagnostics() returns the current value of the configuration diagnostics flag. it's the read to set's write. simple as that.

⭐ RETURN VALUES ⭐

  • OSSL_LIB_CTX_get_conf_diagnostics() returns 0 if the configuration diagnostics should not be performed, and returns nonzero otherwise.

(yes, that's it. the setter is void — it returns nothing, it just does. it's very mysterious about it. 🙈)

🌈 SEE ALSO 🌈

🕰️ HISTORY 🕰️

The functions described on this page were added in OpenSSL 3.4. so if you're on something older, no 3ossl cookie for you 🍪 — go update.

Copyright 2024 The OpenSSL Project Authors. All Rights Reserved. 🫶

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.

aaaand that's the whole page, bestie 🎀 it was tiny but it ate. this little writeup is from 3.5.6, dated 2026-04-0, so go forth, set that diagnostics flag, and let your config errors be heard 💖✨

📦 where this page comes from