639 lines
19 KiB
Bash
639 lines
19 KiB
Bash
#!/bin/bash
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#
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# pacman-key - manages pacman's keyring
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# Based on apt-key, from Debian
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# @configure_input@
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#
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# Copyright (c) 2010-2016 Pacman Development Team <pacman-dev@archlinux.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# gettext initialization
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export TEXTDOMAIN='pacman-scripts'
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export TEXTDOMAINDIR='@localedir@'
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declare -r myver="@PACKAGE_VERSION@"
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LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
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# Import parseopts.sh
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source "$LIBRARY"/util/parseopts.sh
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# Options
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ADD=0
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DELETE=0
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EDITKEY=0
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EXPORT=0
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FINGER=0
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IMPORT=0
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IMPORT_TRUSTDB=0
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INIT=0
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KEYSERVER=''
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LISTKEYS=0
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LISTSIGS=0
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LSIGNKEY=0
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POPULATE=0
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RECEIVE=0
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REFRESH=0
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UPDATEDB=0
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USE_COLOR='y'
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VERIFY=0
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DEFAULT_KEYSERVER='hkp://pool.sks-keyservers.net'
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m4_include(library/output_format.sh)
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usage() {
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printf "pacman-key (pacman) %s\n" ${myver}
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echo
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printf -- "$(gettext "Usage: %s [options] operation [targets]")\n" $(basename $0)
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echo
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printf -- "$(gettext "Manage pacman's list of trusted keys")\n"
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echo
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printf -- "$(gettext "Operations:")\n"
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printf -- "$(gettext " -a, --add Add the specified keys (empty for stdin)")\n"
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printf -- "$(gettext " -d, --delete Remove the specified keyids")\n"
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printf -- "$(gettext " -e, --export Export the specified or all keyids")\n"
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printf -- "$(gettext " -f, --finger List fingerprint for specified or all keyids")\n"
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printf -- "$(gettext " -l, --list-keys List the specified or all keys")\n"
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printf -- "$(gettext " -r, --recv-keys Fetch the specified keyids")\n"
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printf -- "$(gettext " -u, --updatedb Update the trustdb of pacman")\n"
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printf -- "$(gettext " -v, --verify Verify the file(s) specified by the signature(s)")\n"
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printf -- "$(gettext " --edit-key Present a menu for key management task on keyids")\n"
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printf -- "$(gettext " --import Imports pubring.gpg from dir(s)")\n"
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printf -- "$(gettext " --import-trustdb Imports ownertrust values from trustdb.gpg in dir(s)")\n"
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printf -- "$(gettext " --init Ensure the keyring is properly initialized")\n"
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printf -- "$(gettext " --list-sigs List keys and their signatures")\n"
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printf -- "$(gettext " --lsign-key Locally sign the specified keyid")\n"
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printf -- "$(gettext " --populate Reload the default keys from the (given) keyrings\n\
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in '%s'")\n" "@pkgdatadir@/keyrings"
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printf -- "$(gettext " --refresh-keys Update specified or all keys from a keyserver")\n"
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echo
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printf -- "$(gettext "Options:")\n"
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printf -- "$(gettext " --config <file> Use an alternate config file (instead of\n\
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'%s')")\n" "@sysconfdir@/pacman.conf"
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printf -- "$(gettext " --gpgdir <dir> Set an alternate directory for GnuPG (instead\n\
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of '%s')")\n" "@sysconfdir@/pacman.d/gnupg"
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printf -- "$(gettext " --keyserver <server-url> Specify a keyserver to use if necessary")\n"
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echo
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printf -- "$(gettext " -h, --help Show this help message and exit")\n"
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printf -- "$(gettext " -V, --version Show program version")\n"
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}
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version() {
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printf "pacman-key (pacman) %s\n" "${myver}"
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printf -- "$(gettext "\
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Copyright (c) 2010-2016 Pacman Development Team <pacman-dev@archlinux.org>.\n\
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This is free software; see the source for copying conditions.\n\
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There is NO WARRANTY, to the extent permitted by law.\n")"
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}
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# read the config file "$1" which has key=value pairs, and return the key which
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# matches "$2". the equals sign between pairs may be surrounded by any amount
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# of whitespace. Optionally, "$3" can be specified which is the default value
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# when no key is found.
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get_from() {
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while IFS='=' read -r key value; do
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[[ -z $key || ${key:0:1} = '#' ]] && continue
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if [[ ${key%% *} = "$2" && -n ${value##* } ]]; then
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echo "${value##* }"
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return 0
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fi
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done < "$1"
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if [[ -n "$3" ]]; then
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printf '%s\n' "$3"
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return 0
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fi
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return 1
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}
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key_lookup_from_name() {
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local ids
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mapfile -t ids < \
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<("${GPG_PACMAN[@]}" --search-keys --batch --with-colons "$1" 2>/dev/null |
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awk -F: '$1 == "pub" { print $2 }')
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# only return success on non-ambiguous lookup
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case ${#ids[*]} in
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0)
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error "$(gettext "Failed to lookup key by name:") %s" "$name"
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return 1
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;;
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1)
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printf '%s' "${ids[0]}"
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return 0
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;;
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*)
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error "$(gettext "Key name is ambiguous:") %s" "$name"
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return 1
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;;
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esac
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}
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generate_master_key() {
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# Generate the master key, which will be in both pubring and secring
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"${GPG_PACMAN[@]}" --gen-key --batch <<EOF
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%echo Generating pacman keyring master key...
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Key-Type: RSA
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Key-Length: 2048
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Key-Usage: sign
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Name-Real: Pacman Keyring Master Key
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Name-Email: pacman@localhost
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Expire-Date: 0
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%no-protection
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%commit
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%echo Done
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EOF
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}
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secret_keys_available() {
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"${GPG_PACMAN[@]}" -K --with-colons | wc -l
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}
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# Adds the given gpg.conf option if it is not present in the file.
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# Note that if we find it commented out, we won't add the option.
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# args: $1 conffile, $2 option-name, $3 (optional) option-value
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add_gpg_conf_option() {
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local conffile=$1; shift
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# looking for the option 'bare', only leading spaces or # chars allowed,
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# followed by at least one space and any other text or the end of line.
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if ! grep -q "^[[:space:]#]*$1\([[:space:]].*\)*$" "$conffile" &>/dev/null; then
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printf '%s\n' "$*" >> "$conffile"
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fi
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}
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check_keyids_exist() {
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local ret=0
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for key in "$@"; do
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# Verify if the key exists in pacman's keyring
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if ! "${GPG_PACMAN[@]}" --list-keys "$key" &>/dev/null ; then
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error "$(gettext "The key identified by %s could not be found locally.")" "$key"
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ret=1
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fi
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done
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if (( ret )); then
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exit 1
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fi
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}
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initialize() {
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local conffile keyserv
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# Check for simple existence rather than for a directory as someone
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# may want to use a symlink here
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[[ -e ${PACMAN_KEYRING_DIR} ]] || mkdir -p -m 755 "${PACMAN_KEYRING_DIR}"
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# keyring files
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[[ -f ${PACMAN_KEYRING_DIR}/pubring.gpg ]] || touch ${PACMAN_KEYRING_DIR}/pubring.gpg
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[[ -f ${PACMAN_KEYRING_DIR}/secring.gpg ]] || touch ${PACMAN_KEYRING_DIR}/secring.gpg
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[[ -f ${PACMAN_KEYRING_DIR}/trustdb.gpg ]] || "${GPG_PACMAN[@]}" --update-trustdb
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chmod 644 ${PACMAN_KEYRING_DIR}/{pubring,trustdb}.gpg
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chmod 600 ${PACMAN_KEYRING_DIR}/secring.gpg
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# gpg.conf
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conffile="${PACMAN_KEYRING_DIR}/gpg.conf"
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[[ -f $conffile ]] || touch "$conffile"
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chmod 644 "$conffile"
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add_gpg_conf_option "$conffile" 'no-greeting'
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add_gpg_conf_option "$conffile" 'no-permission-warning'
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add_gpg_conf_option "$conffile" 'lock-never'
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keyserv=${KEYSERVER:-$DEFAULT_KEYSERVER}
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add_gpg_conf_option "$conffile" 'keyserver' "$keyserv"
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add_gpg_conf_option "$conffile" 'keyserver-options' 'timeout=10'
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# set up a private signing key (if none available)
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if [[ $(secret_keys_available) -lt 1 ]]; then
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generate_master_key
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UPDATEDB=1
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fi
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}
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check_keyring() {
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if [[ ! -r ${PACMAN_KEYRING_DIR}/pubring.gpg || \
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! -r ${PACMAN_KEYRING_DIR}/trustdb.gpg ]]; then
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error "$(gettext "You do not have sufficient permissions to read the %s keyring.")" "pacman"
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msg "$(gettext "Use '%s' to correct the keyring permissions.")" "pacman-key --init"
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exit 1
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fi
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if (( (EXPORT || FINGER || LIST || VERIFY) && EUID != 0 )); then
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if ! grep -q "^[[:space:]]*lock-never[[:space:]]*$" ${PACMAN_KEYRING_DIR}/gpg.conf &>/dev/null; then
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error "$(gettext "You do not have sufficient permissions to run this command.")"
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msg "$(gettext "Use '%s' to correct the keyring permissions.")" "pacman-key --init"
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exit 1
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fi
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fi
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if (( LSIGNKEY )); then
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if [[ $(secret_keys_available) -lt 1 ]]; then
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error "$(gettext "There is no secret key available to sign with.")"
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msg "$(gettext "Use '%s' to generate a default secret key.")" "pacman-key --init"
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exit 1
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fi
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fi
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}
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populate_keyring() {
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local KEYRING_IMPORT_DIR='@pkgdatadir@/keyrings'
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local keyring KEYRINGIDS=("$@")
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local ret=0
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if (( ${#KEYRINGIDS[*]} == 0 )); then
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# get list of all available keyrings
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shopt -s nullglob
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KEYRINGIDS=("$KEYRING_IMPORT_DIR"/*.gpg)
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shopt -u nullglob
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KEYRINGIDS=("${KEYRINGIDS[@]##*/}")
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KEYRINGIDS=("${KEYRINGIDS[@]%.gpg}")
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if (( ${#KEYRINGIDS[*]} == 0 )); then
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error "$(gettext "No keyring files exist in %s.")" "$KEYRING_IMPORT_DIR"
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ret=1
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fi
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else
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# verify listed keyrings exist
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for keyring in "${KEYRINGIDS[@]}"; do
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if [[ ! -f "$KEYRING_IMPORT_DIR/$keyring.gpg" ]]; then
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error "$(gettext "The keyring file %s does not exist.")" "$KEYRING_IMPORT_DIR/$keyring.gpg"
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ret=1
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fi
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done
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fi
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if (( ret )); then
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exit 1
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fi
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# Variable used for iterating on keyrings
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local keys key_id
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# Add keys from requested keyrings
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for keyring in "${KEYRINGIDS[@]}"; do
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msg "$(gettext "Appending keys from %s.gpg...")" "$keyring"
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"${GPG_PACMAN[@]}" --quiet --import "${KEYRING_IMPORT_DIR}/${keyring}.gpg"
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done
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# Read the trusted key IDs to an array. Because this is an ownertrust
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# file, we know we have the full 40 hex digit fingerprint values.
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# Format of ownertrust dump file:
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# 40CHARFINGERPRINTXXXXXXXXXXXXXXXXXXXXXXX:6:
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# 40CHARFINGERPRINTXXXXXXXXXXXXXXXXXXXXXXX:5:
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local -A trusted_ids
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for keyring in "${KEYRINGIDS[@]}"; do
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if [[ -s "${KEYRING_IMPORT_DIR}/${keyring}-trusted" ]]; then
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while IFS=: read key_id _; do
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# skip blank lines, comments; these are valid in this file
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[[ -z $key_id || ${key_id:0:1} = \# ]] && continue
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# Mark this key to be lsigned
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trusted_ids[$key_id]=$keyring
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done < "${KEYRING_IMPORT_DIR}/${keyring}-trusted"
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fi
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done
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if (( ${#trusted_ids[@]} > 0 )); then
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msg "$(gettext "Locally signing trusted keys in keyring...")"
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lsign_keys "${!trusted_ids[@]}"
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msg "$(gettext "Importing owner trust values...")"
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for keyring in "${KEYRINGIDS[@]}"; do
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if [[ -s "${KEYRING_IMPORT_DIR}/${keyring}-trusted" ]]; then
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"${GPG_PACMAN[@]}" --import-ownertrust "${KEYRING_IMPORT_DIR}/${keyring}-trusted"
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fi
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done
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fi
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local -A revoked_ids
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for keyring in "${KEYRINGIDS[@]}"; do
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if [[ -s $KEYRING_IMPORT_DIR/$keyring-revoked ]]; then
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while read -r key_id; do
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revoked_ids["$key_id"]=1
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done <"$KEYRING_IMPORT_DIR/$keyring-revoked"
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fi
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done
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if (( ${#revoked_ids[@]} > 0 )); then
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msg "$(gettext "Disabling revoked keys in keyring...")"
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for key_id in "${!revoked_ids[@]}"; do
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msg2 "$(gettext "Disabling key %s...")" "${key_id}"
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printf 'disable\nquit\n' | LANG=C "${GPG_PACMAN[@]}" --command-fd 0 --quiet --batch --edit-key "${key_id}" 2>/dev/null
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done
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fi
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}
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add_keys() {
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if ! "${GPG_PACMAN[@]}" --quiet --batch --import "$@" ; then
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error "$(gettext "A specified keyfile could not be added to the keyring.")"
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exit 1
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fi
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}
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delete_keys() {
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check_keyids_exist "$@"
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if ! "${GPG_PACMAN[@]}" --quiet --batch --delete-key --yes "$@" ; then
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error "$(gettext "A specified key could not be removed from the keyring.")"
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exit 1
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fi
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}
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edit_keys() {
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check_keyids_exist "$@"
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local ret=0
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for key in "$@"; do
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if ! "${GPG_PACMAN[@]}" --edit-key "$key" ; then
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error "$(gettext "The key identified by %s could not be edited.")" "$key"
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ret=1
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fi
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done
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if (( ret )); then
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exit 1
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fi
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}
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export_keys() {
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check_keyids_exist "$@"
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if ! "${GPG_PACMAN[@]}" --armor --export "$@" ; then
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error "$(gettext "A specified key could not be exported from the keyring.")"
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exit 1
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fi
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}
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finger_keys() {
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check_keyids_exist
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if ! "${GPG_PACMAN[@]}" --batch --fingerprint "$@" ; then
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error "$(gettext "The fingerprint of a specified key could not be determined.")"
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exit 1
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fi
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}
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import_trustdb() {
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local importdir
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local ret=0
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for importdir in "$@"; do
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if [[ -f "${importdir}/trustdb.gpg" ]]; then
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gpg --homedir "${importdir}" --export-ownertrust | \
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"${GPG_PACMAN[@]}" --import-ownertrust -
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if (( PIPESTATUS )); then
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error "$(gettext "%s could not be imported.")" "${importdir}/trustdb.gpg"
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ret=1
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fi
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else
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error "$(gettext "File %s does not exist and could not be imported.")" "${importdir}/trustdb.gpg"
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ret=1
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fi
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done
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if (( ret )); then
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exit 1
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fi
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}
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import() {
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local importdir
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local ret=0
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for importdir in "$@"; do
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if [[ -f "${importdir}/pubring.gpg" ]]; then
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if ! "${GPG_PACMAN[@]}" --quiet --batch --import "${importdir}/pubring.gpg" ; then
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error "$(gettext "%s could not be imported.")" "${importdir}/pubring.gpg"
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ret=1
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fi
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else
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error "$(gettext "File %s does not exist and could not be imported.")" "${importdir}/pubring.gpg"
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ret=1
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fi
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done
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if (( ret )); then
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exit 1
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fi
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}
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list_keys() {
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check_keyids_exist
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if ! "${GPG_PACMAN[@]}" --batch --list-keys "$@" ; then
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error "$(gettext "A specified key could not be listed.")"
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exit 1
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fi
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}
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list_sigs() {
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check_keyids_exist
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if ! "${GPG_PACMAN[@]}" --batch --list-sigs "$@" ; then
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error "$(gettext "A specified signature could not be listed.")"
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exit 1
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fi
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}
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lsign_keys() {
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check_keyids_exist
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local ret=0
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for key_id in "$@"; do
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msg2 "$(gettext "Locally signing key %s...")" "${key_id}"
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# we cannot use --yes here as gpg would still ask for confirmation if a key has more than one uid
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printf 'y\ny\n' | LANG=C "${GPG_PACMAN[@]}" --command-fd 0 --quiet --batch --lsign-key "${key_id}" 2>/dev/null
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if (( PIPESTATUS[1] )); then
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error "$(gettext "%s could not be locally signed.")" "${key_id}"
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ret=1
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fi
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done
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if (( ret )); then
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exit 1
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fi
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}
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receive_keys() {
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local name id keyids
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# if the key is not a hex ID, do a lookup
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for name; do
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if [[ $name = ?(0x)+([0-9a-fA-F]) ]]; then
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keyids+=("$name")
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else
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if id=$(key_lookup_from_name "$name"); then
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keyids+=("$id")
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fi
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fi
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done
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(( ${#keyids[*]} > 0 )) || exit 1
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if ! "${GPG_PACMAN[@]}" --recv-keys "${keyids[@]}" ; then
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error "$(gettext "Remote key not fetched correctly from keyserver.")"
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exit 1
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fi
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}
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refresh_keys() {
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check_keyids_exist "$@"
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if ! "${GPG_PACMAN[@]}" --refresh-keys "$@" ; then
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error "$(gettext "A specified local key could not be updated from a keyserver.")"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
verify_sig() {
|
|
local ret=0
|
|
for sig; do
|
|
msg "Checking %s..." "$sig"
|
|
if grep -q 'BEGIN PGP SIGNATURE' "$sig"; then
|
|
error "$(gettext "Cannot use armored signatures for packages: %s")" "$sig"
|
|
return 1
|
|
fi
|
|
if ! "${GPG_PACMAN[@]}" --status-fd 1 --verify "$sig" | grep -qE '^\[GNUPG:\] TRUST_(FULLY|ULTIMATE).*$'; then
|
|
error "$(gettext "The signature identified by %s could not be verified.")" "$sig"
|
|
ret=1
|
|
fi
|
|
done
|
|
exit $ret
|
|
}
|
|
|
|
updatedb() {
|
|
msg "$(gettext "Updating trust database...")"
|
|
if ! "${GPG_PACMAN[@]}" --batch --check-trustdb ; then
|
|
error "$(gettext "Trust database could not be updated.")"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
# PROGRAM START
|
|
if ! type gettext &>/dev/null; then
|
|
gettext() {
|
|
echo "$@"
|
|
}
|
|
fi
|
|
|
|
OPT_SHORT="adefhlruvV"
|
|
OPT_LONG=('add' 'config:' 'delete' 'edit-key' 'export' 'finger' 'gpgdir:'
|
|
'help' 'import' 'import-trustdb' 'init' 'keyserver:' 'list-keys' 'list-sigs'
|
|
'lsign-key' 'nocolor' 'populate' 'recv-keys' 'refresh-keys' 'updatedb'
|
|
'verify' 'version')
|
|
if ! parseopts "$OPT_SHORT" "${OPT_LONG[@]}" -- "$@"; then
|
|
exit 1 # E_INVALID_OPTION;
|
|
fi
|
|
set -- "${OPTRET[@]}"
|
|
unset OPT_SHORT OPT_LONG OPTRET
|
|
|
|
if [[ $1 == "--" ]]; then
|
|
usage;
|
|
exit 0;
|
|
fi
|
|
|
|
while (( $# )); do
|
|
case $1 in
|
|
-a|--add) ADD=1 UPDATEDB=1 ;;
|
|
--config) shift; CONFIG=$1 ;;
|
|
-d|--delete) DELETE=1 UPDATEDB=1 ;;
|
|
--edit-key) EDITKEY=1 UPDATEDB=1 ;;
|
|
-e|--export) EXPORT=1 ;;
|
|
-f|--finger) FINGER=1 ;;
|
|
--gpgdir) shift; PACMAN_KEYRING_DIR=$1 ;;
|
|
--import) IMPORT=1 UPDATEDB=1 ;;
|
|
--import-trustdb) IMPORT_TRUSTDB=1 UPDATEDB=1 ;;
|
|
--init) INIT=1 ;;
|
|
--keyserver) shift; KEYSERVER=$1 ;;
|
|
-l|--list-keys) LISTKEYS=1 ;;
|
|
--list-sigs) LISTSIGS=1 ;;
|
|
--lsign-key) LSIGNKEY=1 UPDATEDB=1 ;;
|
|
--nocolor) USE_COLOR='n';;
|
|
--populate) POPULATE=1 UPDATEDB=1 ;;
|
|
-r|--recv-keys) RECEIVE=1 UPDATEDB=1 ;;
|
|
--refresh-keys) REFRESH=1 ;;
|
|
-u|--updatedb) UPDATEDB=1 ;;
|
|
-v|--verify) VERIFY=1 ;;
|
|
|
|
-h|--help) usage; exit 0 ;;
|
|
-V|--version) version; exit 0 ;;
|
|
|
|
--) shift; break 2 ;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
m4_include(library/term_colors.sh)
|
|
|
|
if ! type -p gpg >/dev/null; then
|
|
error "$(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 || LSIGNKEY || POPULATE || RECEIVE || REFRESH || 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 configuration 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" "@sysconfdir@/pacman.d/gnupg")}
|
|
|
|
GPG_PACMAN=(gpg --homedir "${PACMAN_KEYRING_DIR}" --no-permission-warning)
|
|
if [[ -n ${KEYSERVER} ]]; then
|
|
GPG_PACMAN+=(--keyserver "${KEYSERVER}")
|
|
fi
|
|
|
|
# check only a single operation has been given
|
|
# don't include UPDATEDB in here as other opts can induce it
|
|
numopt=$(( ADD + DELETE + EDITKEY + EXPORT + FINGER + IMPORT + IMPORT_TRUSTDB +
|
|
INIT + LISTKEYS + LISTSIGS + LSIGNKEY + POPULATE + RECEIVE + REFRESH + VERIFY ))
|
|
|
|
case $numopt in
|
|
0)
|
|
if (( ! UPDATEDB )); then
|
|
error "$(gettext "no operation specified (use -h for help)")"
|
|
exit 1
|
|
fi
|
|
;;
|
|
[!1])
|
|
error "$(gettext "Multiple operations specified.")"
|
|
msg "$(gettext "Please run %s with each operation separately.")" "pacman-key"
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
# check for targets where needed
|
|
if (( (ADD || DELETE || EDIT || IMPORT || IMPORT_TRUSTDB ||
|
|
LSIGNKEY || RECEIVE || VERIFY) && $# == 0 )); then
|
|
error "$(gettext "No targets specified")"
|
|
exit 1
|
|
fi
|
|
|
|
(( ! INIT )) && check_keyring
|
|
|
|
(( ADD )) && add_keys "$@"
|
|
(( DELETE )) && delete_keys "$@"
|
|
(( EDITKEY )) && edit_keys "$@"
|
|
(( EXPORT )) && export_keys "$@"
|
|
(( FINGER )) && finger_keys "$@"
|
|
(( IMPORT )) && import "$@"
|
|
(( IMPORT_TRUSTDB)) && import_trustdb "$@"
|
|
(( INIT )) && initialize
|
|
(( LISTKEYS )) && list_keys "$@"
|
|
(( LISTSIGS )) && list_sigs "$@"
|
|
(( LSIGNKEY )) && lsign_keys "$@"
|
|
(( POPULATE )) && populate_keyring "$@"
|
|
(( RECEIVE )) && receive_keys "$@"
|
|
(( REFRESH )) && refresh_keys "$@"
|
|
(( VERIFY )) && verify_sig "$@"
|
|
|
|
(( UPDATEDB )) && updatedb
|
|
|
|
exit 0
|
|
|
|
# vim: set noet:
|