# Make sure that "ssh(1)" is installed
(( $+commands[ssh] )) || return
-ssh_logname_prompt() {
+_ax_ssh_prompt() {
[[ -n "$SSH_CLIENT" ]] || return 1
- echo "$LOGNAME"
return 0
}
-ax_logname_prompt_functions=($ax_logname_prompt_functions ssh_logname_prompt)
+ax_logname_prompt_functions=($ax_logname_prompt_functions _ax_ssh_prompt)
+ax_hostname_prompt_functions=($ax_hostname_prompt_functions _ax_ssh_prompt)
-ssh_hostname_prompt() {
- [[ -n "$SSH_CLIENT" ]] || return 1
- echo "$SHORT_HOST"
- return 0
-}
+# Validate SSH_AUTH_SOCK: Inside of screen(1) sessions for example, the socket
+# file becomes invalid when the session has been disconnected.
+[[ ! -r "$SSH_AUTH_SOCK" ]] && unset SSH_AUTH_SOCK
+
+# Save SSH environment when available:
+if [[ -n "$SSH_AUTH_SOCK" ]]; then
+ # Save current environment when no state exists or is invalid.
+ if [[ -r "$XDG_RUNTIME_DIR/ssh-env.sh" ]]; then
+ (
+ source "$XDG_RUNTIME_DIR/ssh-env.sh"
+ if [[ -z "$SSH_AUTH_SOCK" || ! -r "$SSH_AUTH_SOCK" ]]; then
+ # Content is invalid, remove state file!
+ rm -f "$XDG_RUNTIME_DIR/ssh-env.sh"
+ fi
+ )
+ fi
+ if [[ ! -r "$XDG_RUNTIME_DIR/ssh-env.sh" ]]; then
+ # No state file exists, create a new one:
+ echo "SSH_AUTH_SOCK=\"$SSH_AUTH_SOCK\"" >"$XDG_RUNTIME_DIR/ssh-env.sh"
+ echo "export SSH_AUTH_SOCK" >>"$XDG_RUNTIME_DIR/ssh-env.sh"
+ fi
+fi
-ax_hostname_prompt_functions=($ax_hostname_prompt_functions ssh_hostname_prompt)
+# Restore SSH environment when not set but available:
+if [[ -z "$SSH_AUTH_SOCK" && -r "$XDG_RUNTIME_DIR/ssh-env.sh" ]]; then
+ # Try to recover known good environment ...
+ source "$XDG_RUNTIME_DIR/ssh-env.sh"
+ if [[ ! -r "$SSH_AUTH_SOCK" ]]; then
+ # Clean up!
+ unset SSH_AUTH_SOCK
+ rm -f "$XDG_RUNTIME_DIR/ssh-env.sh"
+ fi
+fi