This functions will be called if e.g. a keyphrase is needed.
This function will be called when an incoming X11 request is received.
This function gets called during connection time to indicate the percentage of connection steps completed.
This function will be called each time a global request is received.
This function will be called each time a loggable event happens.
DON'T SET THIS use ssh_callbacks_init() instead.
User-provided data. User is free to set anything he wants here
The structure to replace libssh functions with appropriate callbacks.