OSSL_LIB_CTX...F_DIAGNOSTICS(3SSL)

💖 OSSL_LIB_CTX_SET_CONF_DIAGNOSTICS, OSSL_LIB_CTX_GET_CONF_DIAGNOSTICS 💖

okay bestie, welcome to OSSL_LIB_CTX...F_DIAGNOSTICS(3SSL) — yes the title is a whole mouthful, it's giving "my name is a keyboard smash" but stay with me, it's actually such a cute little pair of functions. ✨

These two? They set and get the configuration diagnostics flag. That's it. That's the whole vibe. 🎀

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✨ NAME ✨

OSSL_LIB_CTX_set_conf_diagnostics, OSSL_LIB_CTX_get_conf_diagnostics — Set and get configuration diagnostics 🦋

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🌸 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);

look at them. so tiny. so powerful. 💅

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💜 DESCRIPTION 💜

so OSSL_LIB_CTX_set_conf_diagnostics()</p> sets the value of the configuration diagnostics flag, okay? And if value is nonzero, then everything that gets parsed and applied from configuration data from then on can actually report errors that would otherwise just be silently ignored. no more quiet failing, we're being loud now, we're in our transparency era 😭✨

and babe, the big one: 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, the errors are not just getting reported, they're literally gonna stop those calls in their tracks. lowkey iconic, highkey a big deal. 🔥

heads up bestie: this flag can also be set while a configuration file is being loaded into the OSSL_LIB_CTX via OSSL_LIB_CTX_load_config(3). and here's the plot twist — if the configuration sets a config_diagnostics value (as described over in config(5)), it will override whatever value you set with OSSL_LIB_CTX_set_conf_diagnostics() before loading that configuration file. so the file wins. the file is the main character here. 👑

and then OSSL_LIB_CTX_get_conf_diagnostics()</p> is the chill one — it just returns the current value of the configuration diagnostics flag. that's it, that's the job, she's just reading, no drama. 🫶

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🌈 RETURN VALUES 🌈

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

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🦋 SEE ALSO 🦋

• SSL_CTX_new(3)
• OSSL_LIB_CTX_load_config(3)
• config(5)

go read those too, i'm literally obsessed with a well-connected manpage 💖

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⭐ HISTORY ⭐

the functions described on this page were added in OpenSSL 3.4. so yeah, they're new-ish, they're fresh, they're babies. 🍓

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👑 COPYRIGHT 👑

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>.

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and that's the whole page, no cap!! 🌸✨ written for OpenSSL 4.0.3, dated 2026-09-29 — thank you for coming to my ted talk, mwah, go set some diagnostics bestie 💅🎀💜