gnutls_handshake_set_hook_function(3) — Linux manual page
gnutls_handsh...hook_function(3) gnutls gnutls_handsh...hook_function(3)
NAME
gnutls_handshake_set_hook_function - API function
SYNOPSIS
#include <gnutls/gnutls.h>
void gnutls_handshake_set_hook_function(gnutls_session_t session,
unsigned int htype, int when, gnutls_handshake_hook_func func);
ARGUMENTS
gnutls_session_t session
is a gnutls_session_t type
unsigned int htype
the gnutls_handshake_description_t of the message to
hook at
int when GNUTLS_HOOK_* depending on when the hook function
should be called
gnutls_handshake_hook_func func
is the function to be called
DESCRIPTION
This function will set a callback to be called after or before
the specified handshake message has been received or generated.
This is a generalization of
gnutls_handshake_set_post_client_hello_function().
To call the hook function prior to the message being generated or
processed use GNUTLS_HOOK_PRE as when parameter,
GNUTLS_HOOK_POST to call after, and GNUTLS_HOOK_BOTH for both
cases.
This callback must return 0 on success or a gnutls error code to
terminate the handshake.
To hook at all handshake messages use an htype of
GNUTLS_HANDSHAKE_ANY.
WARNING
You should not use this function to terminate the handshake based
on client input unless you know what you are doing. Before the
handshake is finished there is no way to know if there is a
man-in-the-middle attack being performed.
REPORTING BUGS
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
COPYRIGHT
Copyright © 2001-2023 Free Software Foundation, Inc., and others.
Copying and distribution of this file, with or without
modification, are permitted in any medium without royalty
provided the copyright notice and this notice are preserved.
SEE ALSO
The full documentation for gnutls is maintained as a Texinfo
manual. If the /usr/share/doc/gnutls/ directory does not contain
the HTML form visit
https://www.gnutls.org/manual/
COLOPHON
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manual page, send it to bugs@gnutls.org. This page was obtained
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