Two small patches

[rdebath]

The first is to simply make the socket readable only for the user (only of any note if you're putting them into /tmp)

The second is an option to suppress the ANSI terminal assumptions specifically:

• Running tput init instead of printf("\033[?25h");
• Don't clear the screen when attaching to an existing session.

[crigler]

The umask change did not seem to do anything until I moved the umask(omask) call after the call to bind.

[domo141]

looks understandable, since bind(2) creates that socket file to the system
(maybe some systems set the umask to the socket descriptor (not yet bound anywhere)
(i wonder why I got email about this commit :)

other thing, that system() looks somewhat "heavyweight" to me...

[crigler]

Yeah, I agree and only cherry-picked the umask change.