Check ssl mode for current connection
#include <upsclient.h>
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.
The upscli_ssl() function returns 1 if SSL is running, and 0 if not. It returns -1 in the event of an error.