SSL_load_client_CA_file(3)

     SSL_load_client_CA_file0.9.6h (2000-10-SSL_load_client_CA_file(3)

     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)

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