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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:-$HOME/.gnupg}/gpg-agent.conf"
_gpg_agent_env="${XDG_CACHE_HOME:-$HOME/.cache}/prezto/gpg-agent.env"
# Load environment variables from previous run
source "$_gpg_agent_env" 2> /dev/null
# Start gpg-agent if not started.
if [[ -z "$GPG_AGENT_INFO" && ! -S "${GNUPGHOME:-$HOME/.gnupg}/S.gpg-agent" && ! -S "/run/user/$(id -u)/gnupg/S.gpg-agent" ]]; then
# Start gpg-agent if not started.
if ! ps -U "$LOGNAME" -o pid,ucomm | grep -q -- "${${${(s.:.)GPG_AGENT_INFO}[2]}:--1} gpg-agent"; then
mkdir -p "$_gpg_agent_env:h"
eval "$(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' "$_gpg_agent_conf" &> /dev/null; then
# Load required functions.
autoload -Uz add-zsh-hook
# Override the ssh-agent environment file default path.
_ssh_agent_env="$_gpg_agent_env"
# Load the SSH module for additional processing.
pmodload 'ssh'
# Updates the GPG-Agent TTY before every command since SSH does not set it.
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