SSL_CONF_CTX_set_flags.3ssl man page

 #include <openssl/ssl.h>

 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags);
 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags);

The function SSL_CONF_CTX_set_flags() sets flags in the context cctx.

The function SSL_CONF_CTX_clear_flags() clears flags in the context cctx.

The flags set affect how subsequent calls to SSL_CONF_cmd() or SSL_CONF_argv() behave.

Currently the following flags values are recognised:

SSL_CONF_FLAG_CMDLINE, SSL_CONF_FLAG_FILE

recognise options intended for command line or configuration file use. At least one of these flags must be set.

SSL_CONF_FLAG_CLIENT, SSL_CONF_FLAG_SERVER

recognise options intended for use in SSL/TLS clients or servers. One or both of these flags must be set.

SSL_CONF_FLAG_CERTIFICATE

recognise certificate and private key options.

SSL_CONF_FLAG_SHOW_ERRORS

indicate errors relating to unrecognised options or missing arguments in the error queue. If this option isn't set such errors are only reflected in the return values of SSL_CONF_set_cmd() or SSL_CONF_set_argv()

SSL_CONF_CTX_set_flags() and SSL_CONF_CTX_clear_flags() returns the new flags value after setting or clearing flags.

SSL_CONF_CTX_new(3), SSL_CONF_CTX_set_ssl_ctx(3), SSL_CONF_CTX_set1_prefix(3), SSL_CONF_cmd(3), SSL_CONF_cmd_argv(3)

These functions were first added to OpenSSL 1.0.2

SSL_CONF_cmd.3ssl(3), SSL_CONF_cmd_argv.3ssl(3), SSL_CONF_CTX_new.3ssl(3), SSL_CONF_CTX_set1_prefix.3ssl(3), SSL_CONF_CTX_set_ssl_ctx.3ssl(3).