#!/bin/sh

# When SSH-ing with agent forwarding enabled, this variable is set by sshd
# itself. However, an existing screen session that we attach to will not have
# its SSH_AUTH_SOCK environment variable updated, so we hardcode this path in
# .screenrc and create a symlink to keep it alive.
#
# It WILL break if two sessions are opened to a machine, and a newer one is
# terminated. ControlMaster in .ssh/config solves this problem by sharing the
# connection (and as a result, sharing SSH agent socket).
[ -n "$SSH_AUTH_SOCK" ] && ln -sf "$SSH_AUTH_SOCK" ~/.ssh/ssh_auth_sock