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60 lines
2.1 KiB
60 lines
2.1 KiB
# |
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# Provides for an easier use of SSH by setting up ssh-agent. |
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# |
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# Authors: |
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# Sorin Ionescu <sorin.ionescu@gmail.com> |
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# |
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# Return if requirements are not found. |
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if (( ! $+commands[ssh-agent] )); then |
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return 1 |
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fi |
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# Set the path to the SSH directory. |
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_ssh_dir="$HOME/.ssh" |
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# Set the path to the environment file if not set by another module. |
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_ssh_agent_env="${_ssh_agent_env:-${TMPDIR:-/tmp}/ssh-agent.env.$UID}" |
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# Set the path to the persistent authentication socket. |
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_ssh_agent_sock="${TMPDIR:-/tmp}/ssh-agent.sock.$UID" |
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# Start ssh-agent if not started. |
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if [[ ! -S "$SSH_AUTH_SOCK" ]]; then |
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# Export environment variables. |
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source "$_ssh_agent_env" 2> /dev/null |
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# Start ssh-agent if not started. |
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if ! ps -U "$LOGNAME" -o pid,ucomm | grep -q -- "${SSH_AGENT_PID:--1} ssh-agent"; then |
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eval "$(ssh-agent | sed '/^echo /d' | tee "$_ssh_agent_env")" |
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fi |
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fi |
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# Create a persistent SSH authentication socket. |
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if [[ -S "$SSH_AUTH_SOCK" && "$SSH_AUTH_SOCK" != "$_ssh_agent_sock" ]]; then |
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ln -sf "$SSH_AUTH_SOCK" "$_ssh_agent_sock" |
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export SSH_AUTH_SOCK="$_ssh_agent_sock" |
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fi |
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# Load identities. |
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if ssh-add -l 2>&1 | grep -q 'The agent has no identities'; then |
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zstyle -a ':prezto:module:ssh:load' identities '_ssh_identities' |
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# ssh-add has strange requirements for running SSH_ASKPASS, so we duplicate |
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# them here. Essentially, if the other requirements are met, we redirect stdin |
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# from /dev/null in order to meet the final requirement. |
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# |
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# From ssh-add(1): |
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# If ssh-add needs a passphrase, it will read the passphrase from the current |
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# terminal if it was run from a terminal. If ssh-add does not have a terminal |
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# associated with it but DISPLAY and SSH_ASKPASS are set, it will execute the |
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# program specified by SSH_ASKPASS and open an X11 window to read the |
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# passphrase. |
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if [[ -n "$DISPLAY" && -x "$SSH_ASKPASS" ]]; then |
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ssh-add ${_ssh_identities:+$_ssh_dir/${^_ssh_identities[@]}} < /dev/null 2> /dev/null |
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else |
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ssh-add ${_ssh_identities:+$_ssh_dir/${^_ssh_identities[@]}} 2> /dev/null |
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fi |
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fi |
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# Clean up. |
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unset _ssh_{dir,identities} _ssh_agent_{env,sock}
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