gnutls_x509_trust_list_set_getissuer_function(3) gnutls
NAME
gnutls_x509_trust_list_set_getissuer_function - API function
SYNOPSIS
#include <gnutls/x509.h>
void
gnutls_x509_trust_list_set_getissuer_function(3)
tlist, gnutls_x509_trust_list_getissuer_function * func);
ARGUMENTS
gnutls_x509_trust_list_t tlist
is a gnutls_x509_trust_list_t type.
gnutls_x509_trust_list_getissuer_function * func
is the callback function
DESCRIPTION
This function sets a callback to be called when the peer's certificate
chain is incomplete due a missing intermediate certificate. The
callback may provide the missing certificate for use during
verification.
The callback's function prototype is defined in gnutls/x509.h as:
int (*callback)(gnutls_x509_trust_list_t list, const gnutls_x509_crt_t
cert, gnutls_x509_crt_t **issuers, unsigned int *issuers_size);
If the callback function is provided then gnutls will call it during
the certificate verification procedure. The callback may wish to use
gnutls_x509_crt_get_authority_info_access() to get a URI from which to
attempt to download the missing issuer certificate, if available.
On a successful call, the callback shall set '*issuers' and
'*issuers_size' even if the result is empty; in that case '*issuers'
will point to NULL and allocated using gnutls_x509_crt_list_import2().
The ownership of both the array and the elements is transferred to the
caller and thus the application does not need to maintain the memory
after the call.
The callback function should return 0 if the attempt to retrieve the
issuer certificates for 'crt' succeeded, or non-zero to indicate any
error occurred during the attempt. In the latter case, '*issuers' and
'*issuers_size' are not set.
SINCE
3.7.0
REPORTING BUGS
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
COPYRIGHT
Copyright (C) 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/
gnutls 3.8.3
gnutls_x509_trust_list_set_getissuer_function(3)
gnutls 3.8.3 - Generated Tue Jan 16 08:46:33 CST 2024