ohmyzsh/plugins/ssh-agent/ssh-agent.plugin.zsh

typeset _agent_forwarding _ssh_env_cache

function _start_agent() {
	local lifetime
	local -a identities

	# start ssh-agent and setup environment
	zstyle -s :omz:plugins:ssh-agent lifetime lifetime

	ssh-agent -s ${lifetime:+-t} ${lifetime} | sed 's/^echo/#echo/' >! $_ssh_env_cache
	chmod 600 $_ssh_env_cache
	. $_ssh_env_cache > /dev/null

	# load identies
	zstyle -a :omz:plugins:ssh-agent identities identities

	echo starting ssh-agent...
	ssh-add $HOME/.ssh/${^identities}
}

# Get the filename to store/lookup the environment from
_ssh_env_cache="$HOME/.ssh/environment-$SHORT_HOST"

# test if agent-forwarding is enabled
zstyle -b :omz:plugins:ssh-agent agent-forwarding _agent_forwarding

if [[ $_agent_forwarding == "yes" && -n "$SSH_AUTH_SOCK" ]]; then
	# Add a nifty symlink for screen/tmux if agent forwarding
	[[ -L $SSH_AUTH_SOCK ]] || ln -sf "$SSH_AUTH_SOCK" /tmp/ssh-agent-$USER-screen
elif [[ -f "$_ssh_env_cache" ]]; then
	# Source SSH settings, if applicable
	. $_ssh_env_cache > /dev/null
	if [[ $USER == "root" ]]; then
		FILTER="ax"
	else
		FILTER="x"
	fi
	ps $FILTER | grep ssh-agent | grep -q $SSH_AGENT_PID || {
		_start_agent
	}
else
	_start_agent
fi

# tidy up after ourselves
unset _agent_forwarding _ssh_env_cache
unfunction _start_agent
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`typeset _agent_forwarding _ssh_env_cache`
ssh-agent module Implement a simple module that automatically launches the ssh-agent when you login and adds your default key. Useful for anyone that does remote work and thus doesn't have access to a keychain tool. 2010-09-25 08:46:52 +08:00
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`function _start_agent() {`
			`local lifetime`
			`local -a identities`
Add support for loading mulitple identities 2011-06-05 10:16:10 +08:00
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`# start ssh-agent and setup environment`
			`zstyle -s :omz:plugins:ssh-agent lifetime lifetime`
Add support for loading mulitple identities 2011-06-05 10:16:10 +08:00
Force ssh-agent output to use bourne-style syntax On systems where the shell cannot be changed because of a strict security policy, ssh-agent will use the syntax of whatever the default $SHELL is. For instance, if the default shell is tcsh, ssh-agent will use the c-shell style (setenv). This change forces ssh-agent to use bourne-style syntax since that has to be later interpreted by zsh. Consequently, the environment file will contain `export' statements from now on (instead of `setenv'). 2014-09-30 17:33:42 +08:00			`ssh-agent -s ${lifetime:+-t} ${lifetime} \| sed 's/^echo/#echo/' >! $_ssh_env_cache`
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`chmod 600 $_ssh_env_cache`
			`. $_ssh_env_cache > /dev/null`
add ssh-agent option to set default lifetime of identities By default, ssh-agent stores identities forever. It has an option to set a maximum lifetime for identites (useful to expire passphrase protected keys). Allow this option to be set using: zstyle :omz:plugins:ssh-agent lifetime <time> 2013-03-16 12:06:46 +08:00
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`# load identies`
			`zstyle -a :omz:plugins:ssh-agent identities identities`

			`echo starting ssh-agent...`
			`ssh-add $HOME/.ssh/${^identities}`
ssh-agent module Implement a simple module that automatically launches the ssh-agent when you login and adds your default key. Useful for anyone that does remote work and thus doesn't have access to a keychain tool. 2010-09-25 08:46:52 +08:00			`}`

ssh-agent: prevent environment file from flapping On an OS X laptop, the variable `$HOST` changes a lot depending on what wifi network you're connected to. This causes a lot of `~/.ssh/environment-$HOST` files to be created and causes multiple ssh-agents to created. Instead, use `scutil --get ComputerName` to get something more stable. 2014-03-14 02:44:58 +08:00			`# Get the filename to store/lookup the environment from`
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`_ssh_env_cache="$HOME/.ssh/environment-$SHORT_HOST"`
ssh-agent: prevent environment file from flapping On an OS X laptop, the variable `$HOST` changes a lot depending on what wifi network you're connected to. This causes a lot of `~/.ssh/environment-$HOST` files to be created and causes multiple ssh-agents to created. Instead, use `scutil --get ComputerName` to get something more stable. 2014-03-14 02:44:58 +08:00
Add support for agent forwarding 2011-06-05 09:07:55 +08:00			`# test if agent-forwarding is enabled`
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`zstyle -b :omz:plugins:ssh-agent agent-forwarding _agent_forwarding`

			`if [[ $_agent_forwarding == "yes" && -n "$SSH_AUTH_SOCK" ]]; then`
			`# Add a nifty symlink for screen/tmux if agent forwarding`
			`[[ -L $SSH_AUTH_SOCK ]] \|\| ln -sf "$SSH_AUTH_SOCK" /tmp/ssh-agent-$USER-screen`
			`elif [[ -f "$_ssh_env_cache" ]]; then`
			`# Source SSH settings, if applicable`
			`. $_ssh_env_cache > /dev/null`
Use existing ssh-agent when invoking a sudo shell (#3891) When invoking a shell as root using ```sudo -s```, the ssh-agent plugin starts a new agent although it already exists. The problem boils down to a check if ssh-agent is running using ```ps x```. If that is extended to ```ps ax``` for root, then the existing ssh-agent will still work. 2018-07-02 00:20:34 +08:00			`if [[ $USER == "root" ]]; then`
			`FILTER="ax"`
			`else`
			`FILTER="x"`
			`fi`
			`ps $FILTER \| grep ssh-agent \| grep -q $SSH_AGENT_PID \|\| {`
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`_start_agent`
			`}`
ssh-agent module Implement a simple module that automatically launches the ssh-agent when you login and adds your default key. Useful for anyone that does remote work and thus doesn't have access to a keychain tool. 2010-09-25 08:46:52 +08:00			`else`
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`_start_agent`
ssh-agent module Implement a simple module that automatically launches the ssh-agent when you login and adds your default key. Useful for anyone that does remote work and thus doesn't have access to a keychain tool. 2010-09-25 08:46:52 +08:00			`fi`

Add support for agent forwarding 2011-06-05 09:07:55 +08:00			`# tidy up after ourselves`
Clean up formatting of ssh-agent plugin 2016-08-21 07:08:34 +08:00			`unset _agent_forwarding _ssh_env_cache`
			`unfunction _start_agent`