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prezto/modules/gpg/init.zsh

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#
# Provides for an easier use of GPG by setting up gpg-agent.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
#
# Return if requirements are not found.
if (( ! $+commands[gpg-agent] )); then
return 1
fi
# Set the default paths to gpg-agent files.
_gpg_agent_conf="${GNUPGHOME:-$HOME/.gnupg}/gpg-agent.conf"
_gpg_agent_env="${TMPDIR:-/tmp}/gpg-agent.env"
# Start gpg-agent if not started.
if [[ -z "$GPG_AGENT_INFO" ]]; then
# Export environment variables.
source "$_gpg_agent_env" 2> /dev/null
# Start gpg-agent if not started.
if ! ps -U "$USER" -o pid,ucomm | grep -q -- "${${${(s.:.)GPG_AGENT_INFO}[2]}:--1} gpg-agent"; then
eval "$(gpg-agent --daemon | tee "$_gpg_agent_env")"
fi
fi
# Inform gpg-agent of the current TTY for user prompts.
export GPG_TTY="$(tty)"
# Integrate with the SSH module.
if grep 'enable-ssh-support' "$_gpg_agent_conf" &> /dev/null; then
# Override the ssh-agent environment file default path.
_ssh_agent_env="$_gpg_agent_env"
# Load the SSH module for additional processing.
pmodload 'ssh'
# ssh doesn't set the gpg-agent tty when asking for the key.
# This updates the tty before every command as a workaround
function _gpg-agent-update-tty() {
gpg-connect-agent updatestartuptty /bye > /dev/null
}
add-zsh-hook preexec _gpg-agent-update-tty
fi
# Clean up.
unset _gpg_agent_{conf,env}
# Disable GUI prompts inside SSH.
if [[ -n "$SSH_CONNECTION" ]]; then
export PINENTRY_USER_DATA='USE_CURSES=1'
fi