upscli_ssl (3) - Linux Man Pages
upscli_ssl: Check SSL mode for current connection
upscli_ssl - Check SSL mode for current connection
int upscli_ssl(UPSCONN_t *ups);
The upscli_ssl() function takes the pointer ups to a UPSCONN_t state structure. It only returns 1 if SSL support has been compiled into the upsclient(3) library, and if it was successfully enabled for this connection.