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SSL_get0_param.3ssl
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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_CTX_get0_param, SSL_get0_param, SSL_CTX_set1_param, SSL_set1_param \- get and set verification parameters .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/ssl.h> \& \& X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) \& X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) \& int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) \& int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBSSL_CTX_get0_param()\fR and \fBSSL_get0_param()\fR retrieve an internal pointer to the verification parameters for \fBctx\fR or \fBssl\fR respectively. The returned pointer must not be freed by the calling application. .PP \&\fBSSL_CTX_set1_param()\fR and \fBSSL_set1_param()\fR set the verification parameters to \fBvpm\fR for \fBctx\fR or \fBssl\fR. .SH "NOTES" .IX Header "NOTES" Typically parameters are retrieved from an \fB\s-1SSL_CTX\s0\fR or \fB\s-1SSL\s0\fR structure using \fBSSL_CTX_get0_param()\fR or \fBSSL_get0_param()\fR and an application modifies them to suit its needs: for example to add a hostname check. .SH "EXAMPLE" .IX Header "EXAMPLE" Check hostname matches \*(L"www.foo.com\*(R" in peer certificate: .PP .Vb 2 \& X509_VERIFY_PARAM *vpm = SSL_get0_param(ssl); \& X509_VERIFY_PARAM_set1_host(vpm, "www.foo.com", 0); .Ve .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBSSL_CTX_get0_param()\fR and \fBSSL_get0_param()\fR return a pointer to an \&\fBX509_VERIFY_PARAM\fR structure. .PP \&\fBSSL_CTX_set1_param()\fR and \fBSSL_set1_param()\fR return 1 for success and 0 for failure. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBX509_VERIFY_PARAM_set_flags\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" These functions were first added to OpenSSL 1.0.2.
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