mirror of
https://github.com/moparisthebest/curl
synced 2024-11-05 17:15:04 -05:00
71 lines
3.1 KiB
Groff
71 lines
3.1 KiB
Groff
|
.\" **************************************************************************
|
||
|
|
.\" * _ _ ____ _
|
||
|
|
.\" * Project ___| | | | _ \| |
|
||
|
|
.\" * / __| | | | |_) | |
|
||
|
|
.\" * | (__| |_| | _ <| |___
|
||
|
|
.\" * \___|\___/|_| \_\_____|
|
||
|
|
.\" *
|
||
|
|
.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
|
||
|
|
.\" *
|
||
|
|
.\" * This software is licensed as described in the file COPYING, which
|
||
|
|
.\" * you should have received as part of this distribution. The terms
|
||
|
|
.\" * are also available at http://curl.haxx.se/docs/copyright.html.
|
||
|
|
.\" *
|
||
|
|
.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
||
|
|
.\" * copies of the Software, and permit persons to whom the Software is
|
||
|
|
.\" * furnished to do so, under the terms of the COPYING file.
|
||
|
|
.\" *
|
||
|
|
.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||
|
|
.\" * KIND, either express or implied.
|
||
|
|
.\" *
|
||
|
|
.\" **************************************************************************
|
||
|
|
.\"
|
||
|
|
.TH CURLOPT_SSL_CTX_FUNCTION 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
|
||
|
|
.SH NAME
|
||
|
|
CURLOPT_SSL_CTX_FUNCTION \- openssl specific callback to do SSL magic
|
||
|
|
.SH SYNOPSIS
|
||
|
|
.nf
|
||
|
|
#include <curl/curl.h>
|
||
|
|
|
||
|
|
CURLcode ssl_ctx_callback(CURL *curl, void *ssl_ctx, void *userptr);
|
||
|
|
|
||
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_CTX_FUNCTION,
|
||
|
|
ssl_ctx_callback);
|
||
|
|
.SH DESCRIPTION
|
||
|
|
This option only works for libcurl powered by OpenSSL. If libcurl was built
|
||
|
|
against another SSL library, this functionality is absent.
|
||
|
|
|
||
|
|
Pass a pointer to your callback function, which should match the prototype
|
||
|
|
shown above.
|
||
|
|
|
||
|
|
This callback function gets called by libcurl just before the initialization
|
||
|
|
of a SSL connection after having processed all other SSL related options to
|
||
|
|
give a last chance to an application to modify the behaviour of openssl's ssl
|
||
|
|
initialization. The \fIsslctx\fP parameter is actually a pointer to an openssl
|
||
|
|
\fISSL_CTX\fP. If an error is returned from the callback, no attempt to
|
||
|
|
establish a connection is made and the perform operation will return the error
|
||
|
|
code. Set the \fIuserptr\fP argument with the \fICURLOPT_SSL_CTX_DATA(3)\fP
|
||
|
|
option.
|
||
|
|
|
||
|
|
This function will get called on all new connections made to a server, during
|
||
|
|
the SSL negotiation. The SSL_CTX pointer will be a new one every time.
|
||
|
|
|
||
|
|
To use this properly, a non-trivial amount of knowledge of the openssl
|
||
|
|
libraries is necessary. For example, using this function allows you to use
|
||
|
|
openssl callbacks to add additional validation code for certificates, and even
|
||
|
|
to change the actual URI of a HTTPS request (example used in the lib509 test
|
||
|
|
case). See also the example section for a replacement of the key, certificate
|
||
|
|
and trust file settings.
|
||
|
|
.SH DEFAULT
|
||
|
|
NULL
|
||
|
|
.SH PROTOCOLS
|
||
|
|
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3, SMTPS etc.
|
||
|
|
.SH EXAMPLE
|
||
|
|
TODO
|
||
|
|
.SH AVAILABILITY
|
||
|
|
Added in 7.11.0. Only supported when built with OpenSSL.
|
||
|
|
.SH RETURN VALUE
|
||
|
|
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
|
||
|
|
.SH "SEE ALSO"
|
||
|
|
.BR CURLOPT_SSL_CTX_DATA "(3), " CURLOPT_SSL_VERIFYPEER "(3), "
|