bashrc_ssh

#!/bin/bash

function ssh-start {
	trap '' SIGINT
	if [ -z "$SSH_AGENT_PID" ]; then
		eval `ssh-agent -s | sed '/^echo/d'`
		echo "SSH agent with pid $SSH_AGENT_PID"
	else
		echo "SSH agent with pid $SSH_AGENT_PID (already running)"
	fi
	KEY_FINGERPRINT=$(ssh-keygen -lf ~/.ssh/id_rsa | grep -oP "^\d+\s+[^\s]+")
	if ! ssh-add -l | grep "$KEY_FINGERPRINT" > /dev/null; then
		ssh-add
	fi
	trap SIGINT
	trap ssh-stop EXIT
}

function ssh-stop {
	if [ -n "$SSH_AGENT_PID" ]; then
		ssh-add -D
		ssh-add -l
		eval `ssh-agent -k`
	fi
	sleep 1
}

function ssh-pass {
	if [[ -z "$1" ]]; then
		echo "Missing password." >&2
		return 1
	fi

	export SSH_PASS=$1
	export SSH_ASKPASS=`mktemp`
	SSH_ASKPASS_TRIES=`mktemp`

	echo 3 > "$SSH_ASKPASS_TRIES"

	cat << EOF > "$SSH_ASKPASS"
#!/bin/bash
echo "\$1" >&2
TRIES=\$((\$(<"$SSH_ASKPASS_TRIES") - 1)) >&2
if [[ \$TRIES -lt 0 ]]; then
	echo "[ssh-pass] Aborting..." >&2
	exit 1
fi
echo \$TRIES > "$SSH_ASKPASS_TRIES"
echo "[ssh-pass] Sending password..." >&2
echo "\$SSH_PASS"
exit 0
EOF
	chmod 0700 "$SSH_ASKPASS"

	"${@:2}" 0> /dev/null

	rm "$SSH_ASKPASS_TRIES"
	rm "$SSH_ASKPASS"

	unset SSH_ASKPASS
	unset SSH_PASS
}