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119 lines
3.5 KiB
119 lines
3.5 KiB
# Get the filename to store/lookup the environment from |
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ssh_env_cache="$HOME/.ssh/environment-$SHORT_HOST" |
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function _start_agent() { |
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# Check if ssh-agent is already running |
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if [[ -f "$ssh_env_cache" ]]; then |
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. "$ssh_env_cache" > /dev/null |
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# Test if $SSH_AUTH_SOCK is visible |
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zmodload zsh/net/socket |
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if [[ -S "$SSH_AUTH_SOCK" ]] && zsocket "$SSH_AUTH_SOCK" 2>/dev/null; then |
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return 0 |
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fi |
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fi |
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if [[ ! -d "$HOME/.ssh" ]]; then |
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echo "[oh-my-zsh] ssh-agent plugin requires ~/.ssh directory" |
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return 1 |
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fi |
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# Set a maximum lifetime for identities added to ssh-agent |
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local lifetime |
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zstyle -s :omz:plugins:ssh-agent lifetime lifetime |
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# start ssh-agent and setup environment |
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zstyle -t :omz:plugins:ssh-agent quiet || echo >&2 "Starting ssh-agent ..." |
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ssh-agent -s ${lifetime:+-t} ${lifetime} | sed '/^echo/d' >! "$ssh_env_cache" |
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chmod 600 "$ssh_env_cache" |
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. "$ssh_env_cache" > /dev/null |
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} |
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function _add_identities() { |
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local id file line sig lines |
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local -a identities loaded_sigs loaded_ids not_loaded |
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zstyle -a :omz:plugins:ssh-agent identities identities |
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# check for .ssh folder presence |
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if [[ ! -d "$HOME/.ssh" ]]; then |
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return |
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fi |
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# add default keys if no identities were set up via zstyle |
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# this is to mimic the call to ssh-add with no identities |
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if [[ ${#identities} -eq 0 ]]; then |
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# key list found on `ssh-add` man page's DESCRIPTION section |
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for id in id_rsa id_dsa id_ecdsa id_ed25519 id_ed25519_sk identity; do |
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# check if file exists |
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[[ -f "$HOME/.ssh/$id" ]] && identities+=($id) |
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done |
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fi |
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# get list of loaded identities' signatures and filenames |
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if lines=$(ssh-add -l); then |
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for line in ${(f)lines}; do |
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loaded_sigs+=${${(z)line}[2]} |
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loaded_ids+=${${(z)line}[3]} |
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done |
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fi |
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# add identities if not already loaded |
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for id in $identities; do |
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# if id is an absolute path, make file equal to id |
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[[ "$id" = /* ]] && file="$id" || file="$HOME/.ssh/$id" |
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# check for filename match, otherwise try for signature match |
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if [[ -f $file && ${loaded_ids[(I)$file]} -le 0 ]]; then |
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sig="$(ssh-keygen -lf "$file" | awk '{print $2}')" |
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[[ ${loaded_sigs[(I)$sig]} -le 0 ]] && not_loaded+=("$file") |
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fi |
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done |
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# abort if no identities need to be loaded |
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if [[ ${#not_loaded} -eq 0 ]]; then |
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return |
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fi |
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# pass extra arguments to ssh-add |
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local args |
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zstyle -a :omz:plugins:ssh-agent ssh-add-args args |
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# if ssh-agent quiet mode, pass -q to ssh-add |
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zstyle -t :omz:plugins:ssh-agent quiet && args=(-q $args) |
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# use user specified helper to ask for password (ksshaskpass, etc) |
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local helper |
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zstyle -s :omz:plugins:ssh-agent helper helper |
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if [[ -n "$helper" ]]; then |
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if [[ -z "${commands[$helper]}" ]]; then |
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echo >&2 "ssh-agent: the helper '$helper' has not been found." |
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else |
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SSH_ASKPASS="$helper" ssh-add "${args[@]}" ${^not_loaded} < /dev/null |
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return $? |
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fi |
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fi |
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ssh-add "${args[@]}" ${^not_loaded} |
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} |
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# Add a nifty symlink for screen/tmux if agent forwarding is enabled |
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if zstyle -t :omz:plugins:ssh-agent agent-forwarding \ |
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&& [[ -n "$SSH_AUTH_SOCK" ]]; then |
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if [[ ! -L "$SSH_AUTH_SOCK" ]]; then |
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if [[ -n "$TERMUX_VERSION" ]]; then |
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ln -sf "$SSH_AUTH_SOCK" "$PREFIX"/tmp/ssh-agent-$USERNAME-screen |
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else |
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ln -sf "$SSH_AUTH_SOCK" /tmp/ssh-agent-$USERNAME-screen |
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fi |
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fi |
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else |
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_start_agent |
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fi |
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# Don't add identities if lazy-loading is enabled |
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if ! zstyle -t :omz:plugins:ssh-agent lazy; then |
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_add_identities |
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fi |
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unset agent_forwarding ssh_env_cache |
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unfunction _start_agent _add_identities
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