SSL_LOAD_CLIENT_CA_FILE(3ossl) OpenSSL SSL_LOAD_CLIENT_CA_FILE(3ossl)
NAME
SSL_load_client_CA_file_ex, SSL_load_client_CA_file,
SSL_add_file_cert_subjects_to_stack,
SSL_add_dir_cert_subjects_to_stack,
SSL_add_store_cert_subjects_to_stack - load certificate names
SYNOPSIS
#include <openssl/ssl.h>
STACK_OF(X509_NAME) *SSL_load_client_CA_file_ex(const char *file,
OSSL_LIB_CTX *libctx,
const char *propq);
STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
const char *file);
int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
const char *dir);
int SSL_add_store_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
const char *store);
DESCRIPTION
SSL_load_client_CA_file_ex() reads certificates from file and returns a
STACK_OF(X509_NAME) with the subject names found. The library context
libctx and property query propq are used when fetching algorithms from
providers.
SSL_load_client_CA_file(3) is similar to SSL_load_client_CA_file_ex()
but uses NULL for the library context libctx and property query propq.
SSL_add_file_cert_subjects_to_stack() reads certificates from file, and
adds their subject name to the already existing stack.
SSL_add_dir_cert_subjects_to_stack() reads certificates from every file
in the directory dir, and adds their subject name to the already
existing stack.
SSL_add_store_cert_subjects_to_stack() loads certificates from the
store URI, and adds their subject name to the already existing stack.
NOTES
SSL_load_client_CA_file(3) reads a file of PEM formatted certificates
and extracts the X509_NAMES of the certificates found. While the name
suggests the specific usage as support function for
SSL_CTX_set_client_CA_list(3), it is not limited to CA certificates.
RETURN VALUES
The following return values can occur for SSL_load_client_CA_file_ex(),
and SSL_load_client_CA_file(3):
NULL
The operation failed, check out the error stack for the reason.
Pointer to STACK_OF(X509_NAME)
Pointer to the subject names of the successfully read certificates.
The following return values can occur for
SSL_add_file_cert_subjects_to_stack(),
SSL_add_dir_cert_subjects_to_stack(), and
SSL_add_store_cert_subjects_to_stack():
0 (Failure)
The operation failed.
1 (Success)
The operation succeeded.
EXAMPLES
Load names of CAs from file and use it as a client CA list:
SSL_CTX *ctx;
STACK_OF(X509_NAME) *cert_names;
...
cert_names = SSL_load_client_CA_file("/path/to/CAfile.pem");
if (cert_names != NULL)
SSL_CTX_set_client_CA_list(ctx, cert_names);
else
/* error */
...
SEE ALSO
ssl(7), ossl_store(7), SSL_CTX_set_client_CA_list(3)
HISTORY
SSL_load_client_CA_file_ex() and SSL_add_store_cert_subjects_to_stack()
were added in OpenSSL 3.0.
COPYRIGHT
Copyright 2000-2024 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.
3.3.2 2024-09-04 SSL_LOAD_CLIENT_CA_FILE(3ossl)
openssl 3.3.2 - Generated Thu Sep 26 09:01:19 CDT 2024