SSL_CONF_CTX_SET1_PREFIX(3SSL)

📦
version 4.0.3 · 13 versions
, in ubuntu stonking

💖 SSL_CONF_CTX_set1_prefix 💖

okay so this is a page from the OpenSSL manual, section 3SSL, and it's literally all about one tiny little function that sets the prefix your config commands get matched against. she's small but she's important, bestie. 🎀

✨ NAME ✨

SSL_CONF_CTX_set1_prefix — set the configuration context command prefix 🦋

🌸 SYNOPSIS 🌸

#include <openssl/ssl.h>

unsigned int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *prefix);

💅 DESCRIPTION 💅

So SSL_CONF_CTX_set1_prefix() sets the command prefix of cctx to prefix. That's the whole job. She's a one-task queen and she ate. 👑

And if prefix is NULL? No stress — it just gets restored to the default value. ✨

🧚 NOTES 🧚

Okay this is the part you actually need to read, bestie, don't skip it. 🫶

Command prefixes alter the commands recognised by subsequent SSL_CONF_cmd() calls. So like, for files: if the prefix "SSL" is set, then command names such as "SSLProtocol", "SSLOptions" etc. are recognised instead of "Protocol" and "Options". Similarly for command lines, if the prefix is "--ssl-" then "--ssl-no_tls1_2" is recognised instead of "-no_tls1_2". It's giving… name-tag energy. Every command has to show up wearing the right prefix or it's not getting in the door. 💀

Now the flag-dependent tea: ☕

  • If the SSL_CONF_FLAG_CMDLINE flag is set, then prefix checks are case sensitive and "-" is the default. And in the unlikely event an application explicitly wants to set no prefix, it must be explicitly set to "". Like, you have to say it out loud, it won't just happen. 😭
  • If the SSL_CONF_FLAG_FILE flag is set, then prefix checks are case insensitive and no prefix is the default. 🌈

⭐ RETURN VALUES ⭐

SSL_CONF_CTX_set1_prefix() returns 1 for success and 0 for failure. That's it. Binary. Slay or flop, no in-between. 💖

🔥 SEE ALSO 🔥

🌈 HISTORY 🌈

These functions were added in OpenSSL 1.0.2. vintage. iconic. a classic. 👑

Copyright 2012-2016 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>.

no cap, the license is not a suggestion, bestie — read it before you ship anything 💅

and that's the whole page!! this was OpenSSL 4.0.3, dated 2026-09-29, from the SSL_CONF_CTX_SET1_PREFIX(3SSL) manual. mwah. go set a prefix. ily. 💜✨

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