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//opt/cpanel/ea-openssl11/share/man/man3/SSL_load_client_CA_file.3
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" SSL_load_client_CA_file, SSL_add_file_cert_subjects_to_stack, SSL_add_dir_cert_subjects_to_stack \&\- load certificate names .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/ssl.h> \& \& 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) .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fISSL_load_client_CA_file()\fR reads certificates from \fIfile\fR and returns a \s-1STACK_OF\s0(X509_NAME) with the subject names found. .PP \&\fISSL_add_file_cert_subjects_to_stack()\fR reads certificates from \fIfile\fR, and adds their subject name to the already existing \fIstack\fR. .PP \&\fISSL_add_dir_cert_subjects_to_stack()\fR reads certificates from every file in the directory \fIdir\fR, and adds their subject name to the already existing \fIstack\fR. .SH "NOTES" .IX Header "NOTES" \&\fISSL_load_client_CA_file()\fR reads a file of \s-1PEM\s0 formatted certificates and extracts the X509_NAMES of the certificates found. While the name suggests the specific usage as support function for \&\fISSL_CTX_set_client_CA_list\fR\|(3), it is not limited to \s-1CA\s0 certificates. .SH "RETURN VALUES" .IX Header "RETURN VALUES" The following return values can occur: .IP "\s-1NULL\s0" 4 .IX Item "NULL" The operation failed, check out the error stack for the reason. .IP "Pointer to \s-1STACK_OF\s0(X509_NAME)" 4 .IX Item "Pointer to STACK_OF(X509_NAME)" Pointer to the subject names of the successfully read certificates. .SH "EXAMPLES" .IX Header "EXAMPLES" Load names of CAs from file and use it as a client \s-1CA\s0 list: .PP .Vb 2 \& 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 */ \& ... .Ve .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fIssl\fR\|(7), \&\fISSL_CTX_set_client_CA_list\fR\|(3) .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2000\-2019 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
