- NAME
- SYNOPSIS
- DESCRIPTION
- NOTES
- RETURN VALUES
- SEE ALSO
- HISTORY

# NAME

SSL_CONF_CTX_set1_prefix - Set configuration context command prefix

# SYNOPSIS

     #include <openssl/ssl.h>

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

# DESCRIPTION

The function `SSL_CONF_CTX_set1_prefix()` sets the command prefix of cctx to prefix. If prefix is NULL it is restored to the default value.

# NOTES

Command prefixes alter the commands recognised by subsequent `SSL_CTX_cmd()` calls. For example 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''.

If the SSL_CONF_FLAG_CMDLINE flag is set then prefix checks are case sensitive and ``-'' is the default. In the unlikely even an application explicitly wants to set no prefix it must be explicitly set to ``''.

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.

# SEE ALSO

SSL_CONF_CTX_new, SSL_CONF_CTX_set_flags, SSL_CONF_CTX_set_ssl_ctx, SSL_CONF_cmd, SSL_CONF_cmd_argv

# HISTORY

These functions were first added to OpenSSL 1.0.2