SSL_load_client_CA_file 3 2001-04-11 0.9.9-dev OpenSSL

### NAME

SSL_load_client_CA_file - load certificate names from file

### LIBRARY

libcrypto, -lcrypto

### SYNOPSIS

     #include

     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)