#
# the script is intended to be sourced from .bashrc 
#
# it will start a new ssh-agent when you log in or connect you to the one 
# already running. mind you if there are other ssh-agent(s) running for the 
# current user with variables stored elsewhere than .ssh/vars.sh this script 
# will do nothing to regain or remove them.
#
# original script found at  http://www.nyetwork.org/wiki/SSH
# and as the author there says, it will not produce any output thus letting 
# things like scp or rsync run smoothly 
# latest version can be found here: http://genja.org/whatever/shellscripts/agent-ssh
#  
# --jaroslav, genja.org
#
#
#
#
# rxvt  rxvt-unicode woot



#
# leave unset if you wish to run ssh-add manually 

ASK4PASS=yes

#Time format examples:
#
#           600     600 seconds (10 minutes)
#           10m     10 minutes
#           1h30m   1 hour 30 minutes (90 minutes)

SSH_AGENT_LIFE="-t 90m"

SSH_VARS=$HOME/.ssh/vars.sh

# everything below this line should work without intervention
#


#     
# this ps line works with:
# Linux procps version 3.2.7 http://procps.sourceforge.net/
# other *nixes will need different ps arguments 
# TODO make a case `uname` in Linux)PSARGS=lol;; *BSD)PSARGS=blol;; Darwin)PSARGS=dlol;; esac
case `uname` in 
	Linux) psA='-a -o pid,args -p';;
	  AIX) psA='-a -o pid,args -p';;
	SunOS) psA='dunno...';;
	 *BSD) psA='axwwo pid,args';;
       Darwin) psA='dunno..';;
CYGWIN_NT-5.1) psA='-e -f -a -p';;
esac

# source the variables file and find out wether ssh-agent is 
# still running
#
[ -s $SSH_VARS ] && . $SSH_VARS >/dev/null && \
RUNNING=`ps $psA $SSH_AGENT_PID |grep  [s]sh-agent`

#
# do we have an agent?
#
# 	
if    [       "$SSH_AUTH_SOCK" == "" ] || [ ! -e "$SSH_AUTH_SOCK" ]\
   || [ ! -S  "$SSH_AUTH_SOCK"       ] || [ "$RUNNING" == "" ]; 
   then

	
	VAR=`ssh-agent 2>/dev/null`
	eval $VAR       >/dev/null

	echo $VAR > $SSH_VARS
fi

# ask for pass-phrase on interactive shells 
NOID="The agent has no identities."
if [ $ASK4PASS ]; then
	case "$-" in
	*i*)	[ "$NOID" = "`ssh-add -l `" ] && ssh-add $SSH_AGENT_LIFE ;;
	*)	## stay quiet  ;;
	esac
fi