NAME
SSL_load_client_CA_file — load certificate names from file
Synopsis
#include <openssl/ssl.h> 
STACK_OF(X509_NAME)
*SSL_load_client_CA_file(const char *file);
DESCRIPTION
SSL_load_client_CA_file() reads certificates from file and
returns a STACK_OF(X509_NAME) with the subject names found. 
NOTES
SSL_load_client_CA_file() 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. 
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_handling();  ...  | 
RETURN VALUES
The following return values can occur: 
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. 
SEE ALSO
ssl(3), SSL_CTX_set_client_CA_list(3)