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wipe_removed_sockets() {
TMPFILE=$(mktemp)
# cleanup old agent-sockets
if [ -r "${HOME}/.ssh-agent-forwarding" ]; then
cut -d" " -f2 "${HOME}/.ssh-agent-forwarding" | \
xargs ls -a 2>/dev/null | \
grep -f - "${HOME}/.ssh-agent-forwarding" | \
sort -n > "${TMPFILE}"
mv "${TMPFILE}" "${HOME}/.ssh-agent-forwarding"
fi
}
fixssh() {
# if the symlinked socket, does not exists
# find latest connection, that is still alive
wipe_removed_sockets
if [ ! -e "${HOME}/.ssh-agent-forwarded-sock" ]; then
LATEST_SOCK=$(tail -n 1 "${HOME}/.ssh-agent-forwarding" | cut -d" " -f2)
if [ -n "$LATEST_SOCK" ]; then
ln -sf "${LATEST_SOCK}" "${HOME}/.ssh-agent-forwarded-sock"
fi
fi
}
wipe_removed_sockets
# if this login is via ssh and ssh-agent is forwarded
if [ -n "$SSH_AUTH_SOCK" -a -n "$SSH_CLIENT" -a "$SSH_AUTH_SOCK" != "${HOME}/.ssh-agent-forwarded-sock" ]; then
# add current socket
echo "$(date +%s) $SSH_AUTH_SOCK $SSH_CLIENT" >> "${HOME}/.ssh-agent-forwarding"
# remove old symlink
if [ -L "${HOME}/.ssh-agent-forwarded-sock" ]; then
rm -f "${HOME}/.ssh-agent-forwarded-sock"
fi
# create static symlink to socket
if [ ! -e "${HOME}/.ssh-agent-forwarded-sock" ]; then
ln -sf "$SSH_AUTH_SOCK" "${HOME}/.ssh-agent-forwarded-sock"
else
echo "Warning: ${HOME}/.ssh-agent-forwarded-sock exists and is not a symlink!"
fi
fi
# if ssh auth sock not exists and the symlink exists
# change $SSH_AUTH_SOCK to the symlink
if [ ! -e "$SSH_AUTH_SOCK" -a -e "${HOME}/.ssh-agent-forwarded-sock" ]; then
SSH_AUTH_SOCK="${HOME}/.ssh-agent-forwarded-sock"
fi
export SSH_AUTH_SOCK
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