1289848Sjkim=pod 2289848Sjkim 3289848Sjkim=head1 NAME 4289848Sjkim 5289848SjkimSSL_CTX_get0_param, SSL_get0_param, SSL_CTX_set1_param, SSL_set1_param - 6289848Sjkimget and set verification parameters 7289848Sjkim 8289848Sjkim=head1 SYNOPSIS 9289848Sjkim 10289848Sjkim #include <openssl/ssl.h> 11289848Sjkim 12289848Sjkim X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx) 13289848Sjkim X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl) 14289848Sjkim int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm) 15289848Sjkim int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm) 16289848Sjkim 17289848Sjkim=head1 DESCRIPTION 18289848Sjkim 19289848SjkimSSL_CTX_get0_param() and SSL_get0_param() retrieve an internal pointer to 20289848Sjkimthe verification parameters for B<ctx> or B<ssl> respectively. The returned 21289848Sjkimpointer must not be freed by the calling application. 22289848Sjkim 23289848SjkimSSL_CTX_set1_param() and SSL_set1_param() set the verification parameters 24289848Sjkimto B<vpm> for B<ctx> or B<ssl>. 25289848Sjkim 26289848Sjkim=head1 NOTES 27289848Sjkim 28289848SjkimTypically parameters are retrieved from an B<SSL_CTX> or B<SSL> structure 29289848Sjkimusing SSL_CTX_get0_param() or SSL_get0_param() and an application modifies 30289848Sjkimthem to suit its needs: for example to add a hostname check. 31289848Sjkim 32289848Sjkim=head1 EXAMPLE 33289848Sjkim 34289848SjkimCheck hostname matches "www.foo.com" in peer certificate: 35289848Sjkim 36289848Sjkim X509_VERIFY_PARAM *vpm = SSL_get0_param(ssl); 37291719Sjkim X509_VERIFY_PARAM_set1_host(vpm, "www.foo.com", 0); 38289848Sjkim 39289848Sjkim=head1 RETURN VALUES 40289848Sjkim 41289848SjkimSSL_CTX_get0_param() and SSL_get0_param() return a pointer to an 42289848SjkimB<X509_VERIFY_PARAM> structure. 43289848Sjkim 44289848SjkimSSL_CTX_set1_param() and SSL_set1_param() return 1 for success and 0 45289848Sjkimfor failure. 46289848Sjkim 47289848Sjkim=head1 SEE ALSO 48289848Sjkim 49289848SjkimL<X509_VERIFY_PARAM_set_flags(3)|X509_VERIFY_PARAM_set_flags(3)> 50289848Sjkim 51289848Sjkim=head1 HISTORY 52289848Sjkim 53289848SjkimThese functions were first added to OpenSSL 1.0.2. 54289848Sjkim 55289848Sjkim=cut 56