use strlcpy vs strncpy+a[len-1]='\0'. millert@ ok.

Make sure $RSH is not the empty string.

always pass salen as separate argument, so that it can be friendly with
systems with pre-4.2 sockaddrs.

do not perform sleep() every time we get ECONNREFUSED.
try all the set of addresses before go to sleep() and retry.

not sure if we still need sleep() - retry logic. why is it so persistent?

visit next addrinfo structure when rresvport_af() fails.
this should fix situation like:
- try to rcmd() to dual stack node from IPv4-only node/kernel

add IPv6-ready rcmd() friends.
rcmd(): IPv4 only
rcmd_af(): af independent
ruserok(): af independent
iruserok(): IPv4 only
iruserok_sa(): af independent

rresvport_af() and bindresvport_af()

some -Wall

correct bounds check

copyright

use fgetln() instead of fgets() so that we can catch \0 in the .rhosts
file. Thanks to fc@parkone.ci.oakland.ca.us for lots of testing and
diagnosis help.

increased paranoia about .rhosts validity

Clean up some -Wall flowers.

if we find an unprintable char, bail totally

indent

use bzero instead of FD_ZERO

howmany(x+1, NFDBITS)

malloc fd_set dynamically, for very large fd uses

Use in_addr_t not u_long and use in_port_t in some cases instead
of u_short or u_int16_t.

never hand over a nonresv port, even if asked. problem reported by gmeinerj@ZUMtOBEL.co.at

ignore $RSH if we are setuid

proper types

Looks at RSH envariable and calls rcmdsh() with that value if set.

i have changed this enough to put copyright on it

check right variable