Initial Commit

openssl-1.0.2f/doc/ssl/SSL_load_client_CA_file.pod

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+=pod
+
+=head1 NAME
+
+SSL_load_client_CA_file - load certificate names from file
+
+=head1 SYNOPSIS
+
+ #include <openssl/ssl.h>
+
+ STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
+
+=head1 DESCRIPTION
+
+SSL_load_client_CA_file() reads certificates from B<file> and returns
+a STACK_OF(X509_NAME) with the subject names found.
+
+=head1 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
+L<SSL_CTX_set_client_CA_list(3)|SSL_CTX_set_client_CA_list(3)>,
+it is not limited to CA certificates.
+
+=head1 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();
+ ...
+
+=head1 RETURN VALUES
+
+The following return values can occur:
+
+=over 4
+
+=item NULL
+
+The operation failed, check out the error stack for the reason.
+
+=item Pointer to STACK_OF(X509_NAME)
+
+Pointer to the subject names of the successfully read certificates.
+
+=back
+
+=head1 SEE ALSO
+
+L<ssl(3)|ssl(3)>,
+L<SSL_CTX_set_client_CA_list(3)|SSL_CTX_set_client_CA_list(3)>
+
+=cut