OSSL_LIB_CTX...F_DIAGNOSTICS(3ossl)

📦 version 3.5.0, in opensuse-leap 16.0

💅 OSSL_LIB_CTX_set_conf_diagnostics, OSSL_LIB_CTX_get_conf_diagnostics — bestie, let's talk config diagnostics

okay so this is a page straight out of the OpenSSL manual, section 3ossl (yes the crypto girlies have their own section, we love that for us). It's about two little functions that flip a flag on and off so your config parser stops being quiet about its feelings. 🎀

✨ NAME ✨

OSSL_LIB_CTX_set_conf_diagnostics, OSSL_LIB_CTX_get_conf_diagnostics — literally just Set and get configuration diagnostics. That's the whole vibe. One sets, one gets, nobody's doing anything extra. 💅

🌸 SYNOPSIS 🌸

bestie, here's the tea, copy-paste ready:

#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, two whole functions. one void, one int. we stan a minimal API. ✨

🦋 DESCRIPTION 🦋

setting the flag 🫶

OSSL_LIB_CTX_set_conf_diagnostics() sets the value of the configuration diagnostics flag. That's it, that's the job.

and like… what does a nonzero value actually do? so glad you asked 👑 — if value is nonzero, then subsequent parsing and application of configuration data can report errors that would otherwise be ignored. the errors were always there, they were just being silent about it. not anymore bestie, we're airing it out. 😭

in particular — and this is the part you actually need to remember — any errors in the ssl configuration module will cause a failure of SSL_CTX_new(3) and SSL_CTX_new_ex(3) calls. like, actual failure. not a shrug, not a warning, a failure. so if your SSL_CTX_new starts acting up out of nowhere, this flag is lowkey the reason. 🫣

plot twist: the config file can override you 🎀

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

and here's the messy part: 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 the file wins. the file always wins. the file is main character energy and your setter call is just supporting cast. 💀

getting the flag 🧚

OSSL_LIB_CTX_get_conf_diagnostics() returns the current value of the configuration diagnostics flag. no surprises, no side quests. 🌈

⭐ RETURN VALUES ⭐

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

so: 0 = we're being chill and quiet. nonzero = we're paying attention and we WILL be reporting. 💅

🔥 SEE ALSO 🔥

go read these next, iykyk:

💜 HISTORY 💜

the functions described on this page were added in OpenSSL 3.4. new-ish, cute, iconic. 👑

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>.

ok that's the whole page bestie, go forth and diagnose those configs 💖

and that's a wrap babes — this was OpenSSL 3.5.0, dated 2026-09-2 (the date got a lil squished at the end there, but we caught it 🫶). mwah 💋✨

📦 where this page comes from