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148 lines
3.4 KiB
148 lines
3.4 KiB
9 years ago
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# Copyright 1999-2015 Gentoo Foundation
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13 years ago
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# Distributed under the terms of the GNU General Public License v2
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9 years ago
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# $Id: eselect-pinentry-0.3,v 1.1 2015/03/31 16:54:08 ulm Exp $
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13 years ago
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# Based on eselect-sh by Michał Górny
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DESCRIPTION="Manage /usr/bin/pinentry symlink"
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MAINTAINER="ssuominen@gentoo.org"
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VERSION="0.2"
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## Functions ##
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# find a list of pinentry symlink targets, best first
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find_targets() {
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local t
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for t in \
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pinentry-qt \
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pinentry-gtk-2 \
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pinentry-qt4 \
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pinentry-curses \
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; do
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if [[ -x ${EROOT}/usr/bin/${t} ]]; then
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echo ${t}
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fi
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done
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}
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# set the pinentry symlink
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set_symlinks() {
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local target="${1}" targets
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[[ ! -L ${EROOT}/usr/bin/pinentry && -e ${EROOT}/usr/bin/pinentry ]] && \
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die -q "/usr/bin/pinentry is not a symlink!"
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if is_number "${target}" && [[ ${target} -ge 1 ]]; then
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targets=( $(find_targets) )
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# If no targets are found, remove the symlink and exit
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if [[ -L ${EROOT}/usr/bin/pinentry && -z ${targets} ]]; then
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rm -f "${EROOT}"/usr/bin/pinentry
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return
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fi
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target=${targets[target-1]}
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fi
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if [[ -x ${EROOT}/usr/bin/${target} ]]; then
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local tmpf="${EROOT}"/usr/bin/pinentry.new
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# we could use 'ln -f' to directly replace the symlink
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# but 'mv' is an atomic operation so it should be more fault-proof
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ln -s "${target}" "${tmpf}" || \
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die -q "Unable to create temporary symlink"
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if ! mv "${tmpf}" "${EROOT}"/usr/bin/pinentry; then
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rm -f "${tmpf}" # cleanup
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die -q "Unable to replace /usr/bin/pinentry symlink with ${target}"
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fi
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else
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die -q "Target '${target}' doesn't appear to be valid!"
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fi
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}
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### show action ###
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describe_show() {
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echo "Show the current pinentry implementation"
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}
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do_show() {
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[[ -z ${@} ]] || die -q "Too many parameters"
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write_list_start "Current pinentry implementation:"
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if [[ -L ${EROOT}/usr/bin/pinentry ]]; then
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write_kv_list_entry "$(basename $(readlink ${EROOT}/usr/bin/pinentry))" ""
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elif [[ -e ${EROOT}/usr/bin/pinentry ]]; then
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write_kv_list_entry "(not a symlink)" ""
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else
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write_kv_list_entry "(unset)" ""
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fi
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}
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### list action ###
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describe_list() {
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echo "List available pinentry implementations"
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}
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do_list() {
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[[ -z ${@} ]] || die -q "Too many parameters"
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local i targets
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targets=( $(find_targets) )
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if [[ -n ${targets[@]} ]]; then
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for (( i = 0; i < ${#targets[@]}; i++ )) ; do
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[[ ${targets[${i}]} == $(basename $(readlink ${EROOT}/usr/bin/pinentry)) ]] && \
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targets[${i}]="${targets[${i}]} $(highlight '*')"
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done
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write_list_start "Available pinentry implementations:"
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write_numbered_list "${targets[@]}"
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else
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write_kv_list_entry "(none found)" ""
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fi
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}
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### set action ###
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describe_set() {
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echo "Set a new pinentry implementation"
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}
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describe_set_options() {
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echo "target : Target name or number (from 'list' action)"
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}
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describe_set_parameters() {
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echo "<target>"
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}
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do_set() {
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if [[ -z ${1} ]]; then
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die -q "Not enough parameters"
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elif [[ -n ${2} ]]; then
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die -q "Too many parameters"
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else
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set_symlinks "${1}"
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fi
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}
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### update action ###
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describe_update() {
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echo "Automatically update the pinentry implementation"
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}
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describe_update_options() {
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echo "ifunset : Do not override existing implementation"
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}
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do_update() {
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[[ -z ${1} || ( -z ${2} && ( ${1} == ifunset || ${1} == '--if-unset' ) ) ]] || \
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die -q "Usage error"
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[[ ( ${1} == ifunset || ${1} == '--if-unset' ) && -L ${EROOT}/usr/bin/pinentry && -x ${EROOT}/usr/bin/pinentry ]] && \
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return
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set_symlinks 1
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}
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