This is version 4.0 of Dans authuser library with a patch applied to catch the SIGPIPE signal that can occur when writing to a remote non-existant auth daemon. There is also a patch applied that fixes the (previously) incorrect argument declaration to clearsa(). There is also a new function, auth_tcpuser4() with a additional last argument that specifies the maximum amount of time to wait on read():ing the reply from the remote Ident server. This is so that things won't hang if it isn't an Ident server at the other end... auth_tcpuser3() calls auth_tcpuser4() with a read-timeout of 30 seconds, so if the remote site transmits the result at a slower pace than that you will get an error back. /Peter Eriksson (pen@lysator.liu.se), 2 Feb 1993
