1 # AX-ZSH: Alex' Modular ZSH Configuration
2 # ssh.zshrc: Setup (Open-) SSH
4 # Make sure that "ssh(1)" is installed
5 (( $+commands[ssh] )) || return
7 # Load SSH keys into the SSH agent, when one is running and doesn't have
8 # any keys already. Not having an SSH agent running at all is ok as well and
9 # results in an "success" exit code (0) as well.
11 [[ -z "$SSH_AUTH_SOCK" ]] && return 0
12 ssh-add -l >/dev/null && return 0
13 [[ $? -eq 2 ]] && return 2
18 [[ -n "$SSH_CLIENT" ]] || return 1
22 ax_logname_prompt_functions=($ax_logname_prompt_functions _ax_ssh_prompt)
23 ax_hostname_prompt_functions=($ax_hostname_prompt_functions _ax_ssh_prompt)
25 # Validate SSH_AUTH_SOCK: Inside of screen(1) sessions for example, the socket
26 # file becomes invalid when the session has been disconnected.
27 [[ ! -r "$SSH_AUTH_SOCK" ]] && unset SSH_AUTH_SOCK
29 # Save SSH environment when available:
30 if [[ -n "$SSH_AUTH_SOCK" && -d "$XDG_RUNTIME_DIR" ]]; then
31 # Save current environment when no state exists or is invalid.
32 if [[ -r "$XDG_RUNTIME_DIR/ssh-env.sh" ]]; then
34 source "$XDG_RUNTIME_DIR/ssh-env.sh"
35 if [[ -z "$SSH_AUTH_SOCK" || ! -r "$SSH_AUTH_SOCK" ]]; then
36 # Content is invalid, remove state file!
37 rm -f "$XDG_RUNTIME_DIR/ssh-env.sh"
41 if [[ ! -r "$XDG_RUNTIME_DIR/ssh-env.sh" ]]; then
42 # No state file exists, create a new one:
43 echo "SSH_AUTH_SOCK=\"$SSH_AUTH_SOCK\"" >"$XDG_RUNTIME_DIR/ssh-env.sh"
44 echo "export SSH_AUTH_SOCK" >>"$XDG_RUNTIME_DIR/ssh-env.sh"
48 # Restore SSH environment when not set but available:
49 if [[ -z "$SSH_AUTH_SOCK" && -r "$XDG_RUNTIME_DIR/ssh-env.sh" ]]; then
50 # Try to recover known good environment ...
51 source "$XDG_RUNTIME_DIR/ssh-env.sh"
52 if [[ ! -r "$SSH_AUTH_SOCK" ]]; then
55 rm -f "$XDG_RUNTIME_DIR/ssh-env.sh"