Merge branch 'vendor/OPENSSL'
[dragonfly.git] / secure / lib / libssl / man / SSL_load_client_CA_file.3
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133.\" ========================================================================
134.\"
135.IX Title "SSL_load_client_CA_file 3"
48f314f8 136.TH SSL_load_client_CA_file 3 "2016-05-03" "1.0.1t" "OpenSSL"
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137.\" For nroff, turn off justification. Always turn off hyphenation; it makes
138.\" way too many mistakes in technical documents.
139.if n .ad l
140.nh
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141.SH "NAME"
142SSL_load_client_CA_file \- load certificate names from file
143.SH "SYNOPSIS"
e056f0e0 144.IX Header "SYNOPSIS"
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145.Vb 1
146\& #include <openssl/ssl.h>
e257b235 147\&
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148\& STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file);
149.Ve
150.SH "DESCRIPTION"
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151.IX Header "DESCRIPTION"
152\&\fISSL_load_client_CA_file()\fR reads certificates from \fBfile\fR and returns
153a \s-1STACK_OF\s0(X509_NAME) with the subject names found.
984263bc 154.SH "NOTES"
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155.IX Header "NOTES"
156\&\fISSL_load_client_CA_file()\fR reads a file of \s-1PEM\s0 formatted certificates and
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157extracts the X509_NAMES of the certificates found. While the name suggests
158the specific usage as support function for
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159\&\fISSL_CTX_set_client_CA_list\fR\|(3),
160it is not limited to \s-1CA\s0 certificates.
984263bc 161.SH "EXAMPLES"
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162.IX Header "EXAMPLES"
163Load names of CAs from file and use it as a client \s-1CA\s0 list:
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164.PP
165.Vb 2
166\& SSL_CTX *ctx;
167\& STACK_OF(X509_NAME) *cert_names;
e257b235 168\&
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169\& ...
170\& cert_names = SSL_load_client_CA_file("/path/to/CAfile.pem");
171\& if (cert_names != NULL)
172\& SSL_CTX_set_client_CA_list(ctx, cert_names);
173\& else
174\& error_handling();
175\& ...
176.Ve
177.SH "RETURN VALUES"
e056f0e0 178.IX Header "RETURN VALUES"
984263bc 179The following return values can occur:
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180.IP "\s-1NULL\s0" 4
181.IX Item "NULL"
984263bc 182The operation failed, check out the error stack for the reason.
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183.IP "Pointer to \s-1STACK_OF\s0(X509_NAME)" 4
184.IX Item "Pointer to STACK_OF(X509_NAME)"
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185Pointer to the subject names of the successfully read certificates.
186.SH "SEE ALSO"
a7d27d5a 187.IX Header "SEE ALSO"
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188\&\fIssl\fR\|(3),
189\&\fISSL_CTX_set_client_CA_list\fR\|(3)