.\"	$OpenBSD: SSL_CTX_ctrl.3,v 1.7 2018/03/27 17:35:50 schwarze Exp $
.\"	OpenSSL b97fdb57 Nov 11 09:33:09 2016 +0100
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.Dd $Mdocdate: March 27 2018 $
.Dt SSL_CTX_CTRL 3
.Os
.Sh NAME
.Nm SSL_CTX_ctrl ,
.Nm SSL_CTX_callback_ctrl ,
.Nm SSL_ctrl ,
.Nm SSL_callback_ctrl
.Nd internal handling functions for SSL_CTX and SSL objects
.Sh SYNOPSIS
.In openssl/ssl.h
.Ft long
.Fn SSL_CTX_ctrl "SSL_CTX *ctx" "int cmd" "long larg" "void *parg"
.Ft long
.Fn SSL_CTX_callback_ctrl "SSL_CTX *" "int cmd" "void (*fp)()"
.Ft long
.Fn SSL_ctrl "SSL *ssl" "int cmd" "long larg" "void *parg"
.Ft long
.Fn SSL_callback_ctrl "SSL *" "int cmd" "void (*fp)()"
.Sh DESCRIPTION
The
.Fn SSL_*_ctrl
family of functions is used to manipulate settings of
the
.Vt SSL_CTX
and
.Vt SSL
objects.
Depending on the command
.Fa cmd
the arguments
.Fa larg ,
.Fa parg ,
or
.Fa fp
are evaluated.
These functions should never be called directly.
All functionalities needed are made available via other functions or macros.
.Sh RETURN VALUES
The return values of the
.Fn SSL*_ctrl
functions depend on the command supplied via the
.Fn cmd
parameter.
.Sh SEE ALSO
.Xr ssl 3 ,
.Xr SSL_CTX_add_extra_chain_cert 3 ,
.Xr SSL_CTX_sess_number 3 ,
.Xr SSL_CTX_sess_set_cache_size 3 ,
.Xr SSL_CTX_set_max_cert_list 3 ,
.Xr SSL_CTX_set_mode 3 ,
.Xr SSL_CTX_set_options 3 ,
.Xr SSL_CTX_set_session_cache_mode 3 ,
.Xr SSL_CTX_set_tlsext_servername_callback 3 ,
.Xr SSL_CTX_set_tlsext_status_cb 3 ,
.Xr SSL_CTX_set_tlsext_ticket_key_cb 3 ,
.Xr SSL_get_server_tmp_key 3 ,
.Xr SSL_num_renegotiations 3 ,
.Xr SSL_session_reused 3 ,
.Xr SSL_set_max_send_fragment 3
.Sh HISTORY
.Fn SSL_CTX_ctrl
and
.Fn SSL_ctrl
first appeared in SSLeay 0.8.0 and have been available since
.Ox 2.4 .
.Pp
.Fn SSL_CTX_callback_ctrl
and
.Fn SSL_callback_ctrl
first appeared in OpenSSL 0.9.5 and have been available since
.Ox 2.7 .