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Diffstat (limited to 'scripts/pacman-key.sh.in')
| -rw-r--r-- | scripts/pacman-key.sh.in | 421 |
1 files changed, 421 insertions, 0 deletions
diff --git a/scripts/pacman-key.sh.in b/scripts/pacman-key.sh.in new file mode 100644 index 00000000..1fc1ab5b --- /dev/null +++ b/scripts/pacman-key.sh.in @@ -0,0 +1,421 @@ +#!/bin/bash -e +# +# pacman-key - manages pacman's keyring +# Based on apt-key, from Debian +# @configure_input@ +# +# Copyright (c) 2010-2011 Pacman Development Team <pacman-dev@archlinux.org> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + +# gettext initialization +export TEXTDOMAIN='pacman-scripts' +export TEXTDOMAINDIR='@localedir@' + +myver="@PACKAGE_VERSION@" + +# Options +ADD=0 +DELETE=0 +EDITKEY=0 +EXPORT=0 +FINGER=0 +IMPORT=0 +IMPORT_TRUSTDB=0 +INIT=0 +LISTKEYS=0 +LISTSIGS=0 +RECEIVE=0 +RELOAD=0 +UPDATEDB=0 +VERIFY=0 + +m4_include(library/output_format.sh) + +m4_include(library/parse_options.sh) + +usage() { + printf "pacman-key (pacman) %s\n" ${myver} + echo + printf "$(gettext "Usage: %s [options]")\n" $(basename $0) + echo + printf "$(gettext "Manage pacman\'s list of trusted keys")\n" + echo + echo "$(gettext "Options:")" + echo "$(gettext " -a, --add [<file(s)>] Add the specified keys (empty for stdin)")" + echo "$(gettext " -d, --delete <keyid(s)> Remove the specified keyids")" + echo "$(gettext " -e, --export [<keyid(s)>] Export the specified or all keyids")" + echo "$(gettext " -f, --finger [<keyid(s)>] List fingerprint for specified or all keyids")" + echo "$(gettext " -h, --help Show this help message and exit")" + echo "$(gettext " -l, --list-keys [<keyid(s)>] List the specified or all keys")" + echo "$(gettext " -r, --receive <keyserver> <keyid(s)> Fetch the specified keyids")" + echo "$(gettext " -u, --updatedb Update the trustdb of pacman")" + echo "$(gettext " -v, --verify <signature> Verify the file specified by the signature")" + echo "$(gettext " -V, --version Show program version")" + echo "$(gettext " --config <file> Use an alternate config file")" + printf "$(gettext " (instead of '%s')")\n" "@sysconfdir@/pacman.conf" + echo "$(gettext " --edit-key <keyid(s)> Present a menu for key management task on keyids")" + echo "$(gettext " --gpgdir <dir> Set an alternate directory for gnupg")" + printf "$(gettext " (instead of '%s')")\n" "@sysconfdir@/pacman.d/gnupg" + echo "$(gettext " --import <dir(s)> Imports pubring.gpg and trustdb.gpg from dir(s)")" + echo "$(gettext " --import-trustdb <dir(s)> Imports ownertrust values from trustdb.gpg in dir(s)")" + echo "$(gettext " --init Ensure the keyring is properly initialized")" + echo "$(gettext " --list-sigs [<keyid(s)>] List keys and their signatures")" + echo "$(gettext " --reload Reload the default keys")" +} + +version() { + printf "pacman-key (pacman) %s\n" "${myver}" + printf "$(gettext "\ +Copyright (c) 2010-2011 Pacman Development Team <pacman-dev@archlinux.org>.\n\ +This is free software; see the source for copying conditions.\n\ +There is NO WARRANTY, to the extent permitted by law.\n")" +} + +# read the config file "$1" which has key=value pairs, and return the key which +# matches "$2". the equals sign between pairs may be surrounded by any amount +# of whitespace. +get_from() { + while IFS='=' read -r key value; do + [[ -z $key || ${key:0:1} = '#' ]] && continue + + if [[ ${key%% *} = "$2" && -n ${value##* } ]]; then + echo "${value##* }" + return 0 + fi + done < "$1" + return 1 +} + +initialize() { + # Check for simple existence rather than for a directory as someone + # may want to use a symlink here + [[ -e ${PACMAN_KEYRING_DIR} ]] || mkdir -p -m 755 "${PACMAN_KEYRING_DIR}" + + # keyring files + [[ -f ${PACMAN_KEYRING_DIR}/pubring.gpg ]] || touch ${PACMAN_KEYRING_DIR}/pubring.gpg + [[ -f ${PACMAN_KEYRING_DIR}/secring.gpg ]] || touch ${PACMAN_KEYRING_DIR}/secring.gpg + [[ -f ${PACMAN_KEYRING_DIR}/trustdb.gpg ]] || "${GPG_PACMAN[@]}" --update-trustdb + chmod 644 ${PACMAN_KEYRING_DIR}/{{pub,sec}ring,trustdb}.gpg + + # gpg.conf + [[ -f ${PACMAN_KEYRING_DIR}/gpg.conf ]] || touch ${PACMAN_KEYRING_DIR}/gpg.conf + chmod 644 ${PACMAN_KEYRING_DIR}/gpg.conf + if ! grep -w -q "lock-never" ${PACMAN_KEYRING_DIR}/gpg.conf &>/dev/null; then + echo "lock-never" >> ${PACMAN_KEYRING_DIR}/gpg.conf + fi +} + +check_keyring() { + if [[ ! -r ${PACMAN_KEYRING_DIR}/pubring.gpg || \ + ! -r ${PACMAN_KEYRING_DIR}/secring.gpg || \ + ! -r ${PACMAN_KEYRING_DIR}/trustdb.gpg ]]; then + error "$(gettext "You do not have sufficient permissions to read the %s keyring...")" "pacman" + msg "$(gettext "Use '%s' to correct the keyring permissions.")" "pacman-key --init" + exit 1 + fi + + if (( (EXPORT || FINGER || LIST || VERIFY) && EUID != 0 )); then + if ! grep -w -q "lock-never" ${PACMAN_KEYRING_DIR}/gpg.conf &>/dev/null; then + error "$(gettext "You do not have sufficient permissions to run this command...")" + msg "$(gettext "Use '%s' to correct the keyring permissions.")" "pacman-key --init" + exit 1 + fi + fi + +} + +verify_keyring_input() { + local ret=0; + + # Verify signatures of related files, if they exist + if [[ -r "${ADDED_KEYS}" ]]; then + msg "$(gettext "Verifying official keys file signature...")" + if ! "${GPG_PACMAN[@]}" --verify "${ADDED_KEYS}.sig" &>/dev/null; then + error "$(gettext "The signature of file %s is not valid.")" "${ADDED_KEYS}" + ret=1 + fi + fi + + if [[ -r "${DEPRECATED_KEYS}" ]]; then + msg "$(gettext "Verifying deprecated keys file signature...")" + if ! "${GPG_PACMAN[@]}" --verify "${DEPRECATED_KEYS}.sig" &>/dev/null; then + error "$(gettext "The signature of file %s is not valid.")" "${DEPRECATED_KEYS}" + ret=1 + fi + fi + + if [[ -r "${REMOVED_KEYS}" ]]; then + msg "$(gettext "Verifying deleted keys file signature...")" + if ! "${GPG_PACMAN[@]}" --verify "${REMOVED_KEYS}.sig" &>/dev/null; then + error "$(gettext "The signature of file %s is not valid.")" "${REMOVED_KEYS}" + ret=1 + fi + fi + + return $ret +} + +reload_keyring() { + local PACMAN_SHARE_DIR='@prefix@/share/pacman' + local GPG_NOKEYRING=(gpg --batch --quiet --ignore-time-conflict --no-options --no-default-keyring --homedir ${PACMAN_KEYRING_DIR}) + + # Variable used for iterating on keyrings + local key + local key_id + + # Keyring with keys to be added to the keyring + local ADDED_KEYS="${PACMAN_SHARE_DIR}/addedkeys.gpg" + + # Keyring with keys that were deprecated and will eventually be deleted + local DEPRECATED_KEYS="${PACMAN_SHARE_DIR}/deprecatedkeys.gpg" + + # List of keys removed from the keyring. This file is not a keyring, unlike the others. + # It is a textual list of values that gpg recogniezes as identifiers for keys. + local REMOVED_KEYS="${PACMAN_SHARE_DIR}/removedkeys" + + verify_keyring_input || exit 1 + + # Read the key ids to an array. The conversion from whatever is inside the file + # to key ids is important, because key ids are the only guarantee of identification + # for the keys. + local -A removed_ids + if [[ -r "${REMOVED_KEYS}" ]]; then + while read key; do + local key_values name + key_values="$("${GPG_PACMAN[@]}" --quiet --with-colons --list-key "${key}" | grep ^pub | cut -d: -f5,10 --output-delimiter=' ')" + if [[ -n $key_values ]]; then + # The first word is the key_id + key_id="${key_values%% *}" + # the rest if the name of the owner + name="${key_values#* }" + if [[ -n ${key_id} ]]; then + # Mark this key to be deleted + removed_ids[$key_id]="$name" + fi + fi + done < "${REMOVED_KEYS}" + fi + + # List of keys that must be kept installed, even if in the list of keys to be removed + local HOLD_KEYS="$(get_from "$CONFIG" "HoldKeys")" + + # Remove the keys that must be kept from the set of keys that should be removed + if [[ -n ${HOLD_KEYS} ]]; then + for key in ${HOLD_KEYS}; do + key_id="$("${GPG_PACMAN[@]}" --quiet --with-colons --list-key "${key}" | grep ^pub | cut -d: -f5)" + if [[ -n "${removed_ids[$key_id]}" ]]; then + unset removed_ids[$key_id] + fi + done + fi + + # Add keys from the current set of keys from pacman-keyring package. The web of trust will + # be updated automatically. + if [[ -r "${ADDED_KEYS}" ]]; then + msg "$(gettext "Appending official keys...")" + local add_keys="$("${GPG_NOKEYRING[@]}" --keyring "${ADDED_KEYS}" --with-colons --list-keys | grep ^pub | cut -d: -f5)" + for key_id in ${add_keys}; do + # There is no point in adding a key that will be deleted right after + if [[ -z "${removed_ids[$key_id]}" ]]; then + "${GPG_NOKEYRING[@]}" --keyring "${ADDED_KEYS}" --export "${key_id}" | "${GPG_PACMAN[@]}" --import + fi + done + fi + + if [[ -r "${DEPRECATED_KEYS}" ]]; then + msg "$(gettext "Appending deprecated keys...")" + local add_keys="$("${GPG_NOKEYRING[@]}" --keyring "${DEPRECATED_KEYS}" --with-colons --list-keys | grep ^pub | cut -d: -f5)" + for key_id in ${add_keys}; do + # There is no point in adding a key that will be deleted right after + if [[ -z "${removed_ids[$key_id]}" ]]; then + "${GPG_NOKEYRING[@]}" --keyring "${DEPRECATED_KEYS}" --export "${key_id}" | "${GPG_PACMAN[@]}" --import + fi + done + fi + + # Remove the keys not marked to keep + if (( ${#removed_ids[@]} > 0 )); then + msg "$(gettext "Removing deleted keys from keyring...")" + for key_id in "${!removed_ids[@]}"; do + echo " removing key $key_id - ${removed_ids[$key_id]}" + "${GPG_PACMAN[@]}" --quiet --batch --yes --delete-key "${key_id}" + done + fi + + # Update trustdb, just to be sure + msg "$(gettext "Updating trust database...")" + "${GPG_PACMAN[@]}" --batch --check-trustdb +} + +receive_keys() { + if [[ -z ${KEYIDS[@]} ]]; then + error "$(gettext "You need to specify the keyserver and at least one key identifier")" + exit 1 + fi + "${GPG_PACMAN[@]}" --keyserver "$KEYSERVER" --recv-keys "${KEYIDS[@]}" +} + +edit_keys() { + local errors=0; + for key in ${KEYIDS[@]}; do + # Verify if the key exists in pacman's keyring + if ! "${GPG_PACMAN[@]}" --list-keys "$key" &>/dev/null; then + error "$(gettext "The key identified by %s does not exist")" "$key" + errors=1; + fi + done + (( errors )) && exit 1; + + for key in ${KEYIDS[@]}; do + "${GPG_PACMAN[@]}" --edit-key "$key" + done +} + +import_trustdb() { + local importdir + local trustdb=$(mktemp) + "${GPG_PACMAN[@]}" --export-ownertrust > ${trustdb} + + for importdir in "${IMPORT_DIRS[@]}"; do + if [[ -f "${importdir}/trustdb.gpg" ]]; then + gpg --homedir "${importdir}" --export-ownertrust >> ${trustdb} + fi + done + + "${GPG_PACMAN[@]}" --import-ownertrust ${trustdb} + rm -f ${trustdb} +} + +import() { + local importdir + + # Imports public keys, then import trustdbs + for importdir in "${IMPORT_DIRS[@]}"; do + if [[ -f "${importdir}/pubring.gpg" ]]; then + "${GPG_PACMAN[@]}" --quiet --batch --import "${importdir}/pubring.gpg" + fi + done + + import_trustdb +} + +# PROGRAM START +if ! type gettext &>/dev/null; then + gettext() { + echo "$@" + } +fi + +OPT_SHORT="a::d:e:f::hl::r:uv:V" +OPT_LONG="add::,config:,delete:,edit-key:,export::,finger::,gpgdir:" +OPT_LONG+=",help,import:,import-trustdb:,init,list-keys::,list-sigs::,,receive:" +OPT_LONG+=",reload,updatedb,verify:,version" +if ! OPT_TEMP="$(parse_options $OPT_SHORT $OPT_LONG "$@")"; then + echo; usage; exit 1 # E_INVALID_OPTION; +fi +eval set -- "$OPT_TEMP" +unset OPT_SHORT OPT_LONG OPT_TEMP + +if [[ $1 == "--" ]]; then + usage; + exit 0; +fi + +while true; do + case "$1" in + -a|--add) ADD=1; [[ -n $2 && ${2:0:1} != "-" ]] && shift && KEYFILES=($1) ;; + --config) shift; CONFIG=$1 ;; + -d|--delete) DELETE=1; shift; KEYIDS=($1) ;; + --edit-key) EDITKEY=1; shift; KEYIDS=($1) ;; + -e|--export) EXPORT=1; [[ -n $2 && ${2:0:1} != "-" ]] && shift && KEYIDS=($1) ;; + -f|--finger) FINGER=1; [[ -n $2 && ${2:0:1} != "-" ]] && shift && KEYIDS=($1) ;; + --gpgdir) shift; PACMAN_KEYRING_DIR=$1 ;; + --import) IMPORT=1; shift; IMPORT_DIRS=($1) ;; + --import-trustdb) IMPORT_TRUSTDB=1; shift; IMPORT_DIRS=($1) ;; + --init) INIT=1 ;; + -l|--list-keys) LISTKEYS=1; [[ -n $2 && ${2:0:1} != "-" ]] && shift && KEYIDS=($1) ;; + --list-sigs) LISTSIGS=1; [[ -n $2 && ${2:0:1} != "-" ]] && shift && KEYIDS=($1) ;; + -r|--receive) RECEIVE=1; shift; TMP=($1); KEYSERVER=${TMP[0]}; KEYIDS=(${TMP[@]:1}); unset TMP;; + --reload) RELOAD=1 ;; + -u|--updatedb) UPDATEDB=1 ;; + -v|--verify) VERIFY=1; shift; SIGNATURE=$1 ;; + + -h|--help) usage; exit 0 ;; + -V|--version) version; exit 0 ;; + + --) OPT_IND=0; shift; break;; + *) usage; exit 1 ;; + esac + shift +done + + +if ! type -p gpg >/dev/null; then + error "$(gettext "Cannot find the %s binary required for all %s operations.")" "gpg" "pacman-key" + exit 1 +fi + +if (( (ADD || DELETE || EDITKEY || IMPORT || IMPORT_TRUSTDB || INIT || RECEIVE || RELOAD || UPDATEDB) && EUID != 0 )); then + error "$(gettext "%s needs to be run as root for this operation.")" "pacman-key" + exit 1 +fi + +CONFIG=${CONFIG:-@sysconfdir@/pacman.conf} +if [[ ! -r "${CONFIG}" ]]; then + error "$(gettext "%s configuation file '%s' not found.")" "pacman" "$CONFIG" + exit 1 +fi + +# if PACMAN_KEYRING_DIR isn't assigned, try to get it from the config +# file, falling back on a hard default +PACMAN_KEYRING_DIR=${PACMAN_KEYRING_DIR:-$(get_from "$CONFIG" "GPGDir" || echo "@sysconfdir@/pacman.d/gnupg")} + +GPG_PACMAN=(gpg --homedir ${PACMAN_KEYRING_DIR} --no-permission-warning) + +# check only a single operation has been given +numopt=$(( ADD + DELETE + EDITKEY + EXPORT + FINGER + IMPORT + IMPORT_TRUSTDB + + INIT + LISTKEYS + LISTSIGS + RECEIVE + RELOAD + UPDATEDB + VERIFY )) + +case $numopt in + 0) + error "$(gettext "no operation specified (use -h for help)")" + exit 1 + ;; + [!1]) + error "$(gettext "Multiple operations specified")" + printf "$(gettext "Please run %s with each operation separately\n")" "pacman-key" + exit 1 + ;; +esac + +(( ! INIT )) && check_keyring + +(( ADD )) && "${GPG_PACMAN[@]}" --quiet --batch --import "${KEYFILES[@]}" +(( DELETE )) && "${GPG_PACMAN[@]}" --quiet --batch --delete-key --yes "${KEYIDS[@]}" +(( EDITKEY )) && edit_keys +(( EXPORT )) && "${GPG_PACMAN[@]}" --armor --export "${KEYIDS[@]}" +(( FINGER )) && "${GPG_PACMAN[@]}" --batch --fingerprint "${KEYIDS[@]}" +(( IMPORT )) && import +(( IMPORT_TRUSTDB)) && import_trustdb +(( INIT )) && initialize +(( LISTKEYS )) && "${GPG_PACMAN[@]}" --batch --list-keys "${KEYIDS[@]}" +(( LISTSIGS )) && "${GPG_PACMAN[@]}" --batch --list-sigs "${KEYIDS[@]}" +(( RECEIVE )) && receive_keys +(( RELOAD )) && reload_keyring +(( UPDATEDB )) && "${GPG_PACMAN[@]}" --batch --check-trustdb +(( VERIFY )) && "${GPG_PACMAN[@]}" --verify $SIGNATURE + +# vim: set ts=2 sw=2 noet: |