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.\" ========================================================================
.\"
.IX Title "SSL_CONF_CTX_set1_prefix 3"
.TH SSL_CONF_CTX_set1_prefix 3 "2019-12-20" "1.0.2u" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
SSL_CONF_CTX_set1_prefix \- Set configuration context command prefix
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& unsigned int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *prefix);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The function \fBSSL_CONF_CTX_set1_prefix()\fR sets the command prefix of \fBcctx\fR
to \fBprefix\fR. If \fBprefix\fR is \fB\s-1NULL\s0\fR it is restored to the default value.
.SH "NOTES"
.IX Header "NOTES"
Command prefixes alter the commands recognised by subsequent \fBSSL_CTX_cmd()\fR
calls. For example for files, if the prefix \*(L"\s-1SSL\*(R"\s0 is set then command names
such as \*(L"SSLProtocol\*(R", \*(L"SSLOptions\*(R" etc. are recognised instead of \*(L"Protocol\*(R"
and \*(L"Options\*(R". Similarly for command lines if the prefix is \*(L"\-\-ssl\-\*(R" then 
\&\*(L"\-\-ssl\-no_tls1_2\*(R" is recognised instead of \*(L"\-no_tls1_2\*(R".
.PP
If the \fB\s-1SSL_CONF_FLAG_CMDLINE\s0\fR flag is set then prefix checks are case
sensitive and \*(L"\-\*(R" is the default. In the unlikely even an application
explicitly wants to set no prefix it must be explicitly set to "".
.PP
If the \fB\s-1SSL_CONF_FLAG_FILE\s0\fR flag is set then prefix checks are case
insensitive and no prefix is the default.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBSSL_CONF_CTX_set1_prefix()\fR returns 1 for success and 0 for failure.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBSSL_CONF_CTX_new\fR\|(3),
\&\fBSSL_CONF_CTX_set_flags\fR\|(3),
\&\fBSSL_CONF_CTX_set_ssl_ctx\fR\|(3),
\&\fBSSL_CONF_cmd\fR\|(3),
\&\fBSSL_CONF_cmd_argv\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
These functions were first added to OpenSSL 1.0.2