2a60385659
Use fingerprint of ssh key instead of file name to control if the key is already loaded. Also check for .ssh folder presence (#5128)
69 lines
1.8 KiB
Bash
69 lines
1.8 KiB
Bash
typeset _agent_forwarding _ssh_env_cache
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function _start_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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echo starting ssh-agent...
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ssh-agent -s ${lifetime:+-t} ${lifetime} | sed 's/^echo/#echo/' >! $_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 line sig
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local -a identities loaded signatures
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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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# get list of loaded identities' signatures
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for line in ${(f)"$(ssh-add -l)"}; do loaded+=${${(z)line}[2]}; done
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# get signatures of private keys
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for id in $identities; do
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signatures+="$(ssh-keygen -lf "$HOME/.ssh/$id" | awk '{print $2}') $id"
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done
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# add identities if not already loaded
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for sig in $signatures; do
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id="$(cut -f2 <<< $sig)"
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sig="$(cut -f1 <<< $sig)"
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[[ ${loaded[(I)$sig]} -le 0 ]] && ssh-add $HOME/.ssh/$id
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done
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}
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# 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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# test if agent-forwarding is enabled
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zstyle -b :omz:plugins:ssh-agent agent-forwarding _agent_forwarding
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if [[ $_agent_forwarding == "yes" && -n "$SSH_AUTH_SOCK" ]]; then
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# Add a nifty symlink for screen/tmux if agent forwarding
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[[ -L $SSH_AUTH_SOCK ]] || ln -sf "$SSH_AUTH_SOCK" /tmp/ssh-agent-$USER-screen
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elif [[ -f "$_ssh_env_cache" ]]; then
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# Source SSH settings, if applicable
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. $_ssh_env_cache > /dev/null
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if [[ $USER == "root" ]]; then
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FILTER="ax"
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else
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FILTER="x"
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fi
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ps $FILTER | grep ssh-agent | grep -q $SSH_AGENT_PID || {
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_start_agent
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}
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else
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_start_agent
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fi
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_add_identities
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# tidy up after ourselves
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unset _agent_forwarding _ssh_env_cache
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unfunction _start_agent _add_identities
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