set -e
unset GREP_OPTIONS
-
-APT_DIR="/"
-eval $(apt-config shell APT_DIR Dir)
+export IFS="$(printf "\n\b")"
MASTER_KEYRING='&keyring-master-filename;'
-eval $(apt-config shell MASTER_KEYRING APT::Key::MasterKeyring)
+eval "$(apt-config shell MASTER_KEYRING APT::Key::MasterKeyring)"
ARCHIVE_KEYRING='&keyring-filename;'
-eval $(apt-config shell ARCHIVE_KEYRING APT::Key::ArchiveKeyring)
+eval "$(apt-config shell ARCHIVE_KEYRING APT::Key::ArchiveKeyring)"
REMOVED_KEYS='&keyring-removed-filename;'
-eval $(apt-config shell REMOVED_KEYS APT::Key::RemovedKeys)
+eval "$(apt-config shell REMOVED_KEYS APT::Key::RemovedKeys)"
ARCHIVE_KEYRING_URI='&keyring-uri;'
-eval $(apt-config shell ARCHIVE_KEYRING_URI APT::Key::ArchiveKeyringURI)
+eval "$(apt-config shell ARCHIVE_KEYRING_URI APT::Key::ArchiveKeyringURI)"
aptkey_echo() { echo "$@"; }
fi
}
+command_available() {
+ # command -v "$1" >/dev/null 2>&1 # not required by policy, see #747320
+ # which "$1" >/dev/null 2>&1 # is in debianutils (essential) but not on non-debian systems
+ local OLDIFS="$IFS"
+ IFS=:
+ for p in $PATH; do
+ if [ -x "${p}/${1}" ]; then
+ IFS="$OLDIFS"
+ return 0
+ fi
+ done
+ IFS="$OLDIFS"
+ return 1
+}
+
+escape_shell() {
+ echo "$@" | sed -e "s#'#'\"'\"'#g"
+}
+
get_fingerprints_of_keyring() {
- $GPG_CMD --keyring "$1" --with-colons --fingerprint | while read publine; do
+ aptkey_execute "$GPG_SH" --keyring "$1" --with-colons --fingerprint | while read publine; do
# search for a public key
if [ "${publine%%:*}" != 'pub' ]; then continue; fi
# search for the associated fingerprint (should be the very next line)
}
add_keys_with_verify_against_master_keyring() {
- ADD_KEYRING=$1
- MASTER=$2
+ ADD_KEYRING="$1"
+ MASTER="$2"
if [ ! -f "$ADD_KEYRING" ]; then
echo >&2 "ERROR: '$ADD_KEYRING' not found"
# all keys that are exported must have a valid signature
# from a key in the $distro-master-keyring
add_keys="$(get_fingerprints_of_keyring "$ADD_KEYRING")"
- all_add_keys=`$GPG_CMD --keyring $ADD_KEYRING --with-colons --list-keys | grep ^[ps]ub | cut -d: -f5`
- master_keys=`$GPG_CMD --keyring $MASTER --with-colons --list-keys | grep ^pub | cut -d: -f5`
+ all_add_keys="$(aptkey_execute "$GPG_SH" --keyring "$ADD_KEYRING" --with-colons --list-keys | grep ^[ps]ub | cut -d: -f5)"
+ master_keys="$(aptkey_execute "$GPG_SH" --keyring "$MASTER" --with-colons --list-keys | grep ^pub | cut -d: -f5)"
# ensure there are no colisions LP: #857472
for all_add_key in $all_add_keys; do
for add_key in $add_keys; do
# export the add keyring one-by-one
local TMP_KEYRING="${GPGHOMEDIR}/tmp-keyring.gpg"
- $GPG_CMD --batch --yes --keyring "$ADD_KEYRING" --output "$TMP_KEYRING" --export "$add_key"
- if ! $GPG_CMD --batch --yes --keyring "$TMP_KEYRING" --import "$MASTER" > "${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
+ aptkey_execute "$GPG_SH" --batch --yes --keyring "$ADD_KEYRING" --output "$TMP_KEYRING" --export "$add_key"
+ if ! aptkey_execute "$GPG_SH" --batch --yes --keyring "$TMP_KEYRING" --import "$MASTER" > "${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
false
fi
# check if signed with the master key and only add in this case
ADDED=0
for master_key in $master_keys; do
- if $GPG_CMD --keyring $TMP_KEYRING --check-sigs --with-colons $add_key | grep '^sig:!:' | cut -d: -f5 | grep -q $master_key; then
- $GPG_CMD --batch --yes --keyring "$ADD_KEYRING" --export "$add_key" | $GPG --batch --yes --import
+ if aptkey_execute "$GPG_SH" --keyring "$TMP_KEYRING" --check-sigs --with-colons "$add_key" \
+ | grep '^sig:!:' | cut -d: -f5 | grep -q "$master_key"; then
+ aptkey_execute "$GPG_SH" --batch --yes --keyring "$ADD_KEYRING" --export "$add_key" \
+ | aptkey_execute "$GPG" --batch --yes --import
ADDED=1
fi
done
# the archive-keyring keys needs to be signed with the master key
# (otherwise it does not make sense from a security POV)
net_update() {
+ local APT_DIR='/'
+ eval $(apt-config shell APT_DIR Dir)
+
# Disabled for now as code is insecure (LP: #1013639 (and 857472, 1013128))
APT_KEY_NET_UPDATE_ENABLED=""
eval $(apt-config shell APT_KEY_NET_UPDATE_ENABLED APT::Key::Net-Update-Enabled)
fi
# in theory we would need to depend on wget for this, but this feature
# isn't useable in debian anyway as we have no keyring uri nor a master key
- if ! which wget >/dev/null 2>&1; then
+ if ! command_available 'wget'; then
echo >&2 "ERROR: an installed wget is required for a network-based update"
exit 1
fi
- if [ ! -d ${APT_DIR}/var/lib/apt/keyrings ]; then
- mkdir -p ${APT_DIR}/var/lib/apt/keyrings
+ if [ ! -d "${APT_DIR}/var/lib/apt/keyrings" ]; then
+ mkdir -p "${APT_DIR}/var/lib/apt/keyrings"
fi
- keyring=${APT_DIR}/var/lib/apt/keyrings/$(basename $ARCHIVE_KEYRING_URI)
+ keyring="${APT_DIR}/var/lib/apt/keyrings/$(basename "$ARCHIVE_KEYRING_URI")"
old_mtime=0
if [ -e $keyring ]; then
- old_mtime=$(stat -c %Y $keyring)
+ old_mtime=$(stat -c %Y "$keyring")
fi
- (cd ${APT_DIR}/var/lib/apt/keyrings; wget --timeout=90 -q -N $ARCHIVE_KEYRING_URI)
- if [ ! -e $keyring ]; then
+ (cd "${APT_DIR}/var/lib/apt/keyrings"; wget --timeout=90 -q -N "$ARCHIVE_KEYRING_URI")
+ if [ ! -e "$keyring" ]; then
return
fi
- new_mtime=$(stat -c %Y $keyring)
+ new_mtime=$(stat -c %Y "$keyring")
if [ $new_mtime -ne $old_mtime ]; then
aptkey_echo "Checking for new archive signing keys now"
- add_keys_with_verify_against_master_keyring $keyring $MASTER_KEYRING
+ add_keys_with_verify_against_master_keyring "$keyring" "$MASTER_KEYRING"
fi
}
update() {
- if [ ! -f $ARCHIVE_KEYRING ]; then
+ if [ ! -f "$ARCHIVE_KEYRING" ]; then
echo >&2 "ERROR: Can't find the archive-keyring"
echo >&2 "Is the &keyring-package; package installed?"
exit 1
return
fi
- local GPG="$GPG_CMD --keyring $KEYRINGFILE"
for KEY in "$@"; do
local FINGERPRINTS="${GPGHOMEDIR}/keyringfile.keylst"
get_fingerprints_of_keyring "$KEYRINGFILE" > "$FINGERPRINTS"
cp -a "$REALTARGET" "$KEYRINGFILE"
fi
# delete the key from the keyring
- $GPG --batch --delete-keys --yes "$KEY"
+ aptkey_execute "$GPG_SH" --keyring "$KEYRINGFILE" --batch --delete-keys --yes "$KEY"
if [ -n "$REALTARGET" ]; then
# the real backup is the old link, not the copy we made
mv -f "${KEYRINGFILE}.dpkg-tmp" "${KEYRINGFILE}~"
$ACTION "$TRUSTEDFILE" "$@"
fi
local TRUSTEDPARTS="/etc/apt/trusted.gpg.d"
- eval $(apt-config shell TRUSTEDPARTS Dir::Etc::TrustedParts/d)
+ eval "$(apt-config shell TRUSTEDPARTS Dir::Etc::TrustedParts/d)"
if [ -d "$TRUSTEDPARTS" ]; then
# strip / suffix as gpg will double-slash in that case (#665411)
local STRIPPED_TRUSTEDPARTS="${TRUSTEDPARTS%/}"
if [ "${STRIPPED_TRUSTEDPARTS}/" = "$TRUSTEDPARTS" ]; then
TRUSTEDPARTS="$STRIPPED_TRUSTEDPARTS"
fi
- for trusted in $(run-parts --list "$TRUSTEDPARTS" --regex '^.*\.gpg$'); do
+ for trusted in $(find "$TRUSTEDPARTS" -mindepth 1 -maxdepth 1 -regex '^.*\.gpg$' | sort); do
if [ -s "$trusted" ]; then
$ACTION "$trusted" "$@"
fi
local KEYRINGFILE="$1"
shift
# fingerprint and co will fail if key isn't in this keyring
- $GPG_CMD --keyring "$KEYRINGFILE" --batch "$@" 2>/dev/null || true
+ aptkey_execute "$GPG_SH" --keyring "$KEYRINGFILE" --batch "$@" 2>/dev/null || true
}
import_keyring_into_keyring() {
shift 2
rm -f "${GPGHOMEDIR}/gpgoutput.log"
# the idea is simple: We take keys from one keyring and copy it to another
- # we do this with so many checks inbetween to ensure that WE control the
+ # we do this with so many checks in between to ensure that WE control the
# creation, so we know that the (potentially) created $TO keyring is a
# simple keyring rather than a keybox as gpg2 would create it which in turn
# can't be read by gpgv.
if [ ! -s "$TO" ]; then
if [ -s "$FROM" ]; then
if [ -z "$2" ]; then
- if ! $GPG_CMD --keyring "$FROM" --export ${1:+"$1"} > "$TO" 2> "${GPGHOMEDIR}/gpgoutput.log"; then
+ if ! aptkey_execute "$GPG_SH" --keyring "$FROM" --export ${1:+"$1"} > "$TO" 2> "${GPGHOMEDIR}/gpgoutput.log"; then
cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
false
else
elif [ -s "$FROM" ]; then
local EXPORTLIMIT="$1"
if [ -n "$1$2" ]; then shift; fi
- if ! $GPG_CMD --keyring "$FROM" --export ${EXPORTLIMIT:+"$EXPORTLIMIT"} | $GPG_CMD --keyring "$TO" --batch --import "$@" > "${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
+ if ! aptkey_execute "$GPG_SH" --keyring "$FROM" --export ${EXPORTLIMIT:+"$EXPORTLIMIT"} \
+ | aptkey_execute "$GPG_SH" --keyring "$TO" --batch --import "$@" > "${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
false
fi
eval $(apt-config shell TRUSTEDPARTS Dir::Etc::TrustedParts/d)
if [ -d "$TRUSTEDPARTS" ]; then
# ignore errors mostly for non-existing $TRUSTEDFILE
- cat /dev/null "$TRUSTEDFILE" $(find -L "$TRUSTEDPARTS" -type f -name '*.gpg') > "$PUBRING" 2>/dev/null || true
+ {
+ cat "$TRUSTEDFILE" || true
+ for parts in $(find -L "$TRUSTEDPARTS" -type f -name '*.gpg'); do
+ cat "$parts" || true
+ done
+ } > "$PUBRING" 2>/dev/null
elif [ -s "$TRUSTEDFILE" ]; then
cp --dereference "$TRUSTEDFILE" "$PUBRING"
fi
merge_all_trusted_keyrings_into_pubring
FORCED_KEYRING="${GPGHOMEDIR}/forcedkeyid.gpg"
TRUSTEDFILE="${FORCED_KEYRING}"
- GPG="$GPG --keyring $TRUSTEDFILE"
+ echo "#!/bin/sh
+exec sh '($(escape_shell "${GPG}")' --keyring '$(escape_shell "${TRUSTEDFILE}")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
+ GPG="${GPGHOMEDIR}/gpg.1.sh"
# ignore error as this "just" means we haven't found the forced keyid and the keyring will be empty
import_keyring_into_keyring '' "$TRUSTEDFILE" "$FORCED_KEYID" || true
elif [ -z "$FORCED_KEYRING" ]; then
else
touch "${GPGHOMEDIR}/pubring.gpg" "${GPGHOMEDIR}/pubring.orig.gpg"
fi
- GPG="$GPG --keyring ${GPGHOMEDIR}/pubring.gpg"
+ echo "#!/bin/sh
+exec sh '$(escape_shell "${GPG}")' --keyring '$(escape_shell "${GPGHOMEDIR}/pubring.gpg")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
+ GPG="${GPGHOMEDIR}/gpg.1.sh"
else
create_new_keyring "$TRUSTEDFILE"
- GPG="$GPG --keyring $TRUSTEDFILE"
+ echo "#!/bin/sh
+exec sh '$(escape_shell "${GPG}")' --keyring '$(escape_shell "${TRUSTEDFILE}")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
+ GPG="${GPGHOMEDIR}/gpg.1.sh"
fi
}
fi
}
+aptkey_execute() { sh "$@"; }
+
usage() {
echo "Usage: apt-key [--keyring file] [command] [arguments]"
echo
;;
--readonly)
merge_back_changes() { true; }
- create_new_keyring() { if [ ! -r $FORCED_KEYRING ]; then TRUSTEDFILE='/dev/null'; FORCED_KEYRING="$TRUSTEDFILE"; fi; }
+ create_new_keyring() { if [ ! -r "$FORCED_KEYRING" ]; then TRUSTEDFILE='/dev/null'; FORCED_KEYRING="$TRUSTEDFILE"; fi; }
;;
--fakeroot)
requires_root() { true; }
;;
--debug1)
# some cmds like finger redirect stderr to /dev/null …
- aptkey_execute() { echo 'EXEC:' "$@"; "$@"; }
+ aptkey_execute() { echo 'EXEC:' "$@"; sh "$@"; }
;;
--debug2)
# … other more complicated ones pipe gpg into gpg.
- aptkey_execute() { echo >&2 'EXEC:' "$@"; "$@"; }
+ aptkey_execute() { echo >&2 'EXEC:' "$@"; sh "$@"; }
;;
--*)
echo >&2 "Unknown option: $1"
fi
fi
GPGHOMEDIR="$(mktemp -d)"
- CURRENTTRAP="${CURRENTTRAP} rm -rf '${GPGHOMEDIR}';"
+ CURRENTTRAP="${CURRENTTRAP} rm -rf '$(escape_shell "${GPGHOMEDIR}")';"
trap "${CURRENTTRAP}" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM
chmod 700 "$GPGHOMEDIR"
}
prepare_gpg_home() {
- eval $(apt-config shell GPG_EXE Apt::Key::gpgcommand)
+ eval "$(apt-config shell GPG_EXE Apt::Key::gpgcommand)"
- if [ -n "$GPG_EXE" ] && which "$GPG_EXE" >/dev/null 2>&1; then
+ if [ -n "$GPG_EXE" ] && command_available "$GPG_EXE"; then
true
- elif which gpg >/dev/null 2>&1; then
+ elif command_available 'gpg'; then
GPG_EXE="gpg"
- elif which gpg2 >/dev/null 2>&1; then
+ elif command_available 'gpg2'; then
GPG_EXE="gpg2"
else
echo >&2 "Error: gnupg or gnupg2 do not seem to be installed,"
exit 255
fi
- if type aptkey_execute >/dev/null 2>&1; then
- GPG_EXE="aptkey_execute $GPG_EXE"
- fi
- GPG_CMD="$GPG_EXE --ignore-time-conflict --no-options --no-default-keyring"
-
create_gpg_home
- # We don't use a secret keyring, of course, but gpg panics and
- # implodes if there isn't one available - and writeable for imports
- SECRETKEYRING="${GPGHOMEDIR}/secring.gpg"
- touch $SECRETKEYRING
- GPG_CMD="$GPG_CMD --homedir $GPGHOMEDIR"
# create the trustdb with an (empty) dummy keyring
# older gpgs required it, newer gpgs even warn that it isn't needed,
# but require it nonetheless for some commands, so we just play safe
# here for the foreseeable future and create a dummy one
- $GPG_CMD --quiet --check-trustdb --keyring $SECRETKEYRING >/dev/null 2>&1
- # tell gpg that it shouldn't try to maintain a trustdb file
- GPG_CMD="$GPG_CMD --no-auto-check-trustdb --trust-model always"
- GPG="$GPG_CMD"
+ touch "${GPGHOMEDIR}/empty.gpg"
+ if ! "$GPG_EXE" --ignore-time-conflict --no-options --no-default-keyring \
+ --homedir "$GPGHOMEDIR" --quiet --check-trustdb --keyring "${GPGHOMEDIR}/empty.gpg" >"${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
+ cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
+ false
+ fi
+ # now tell gpg that it shouldn't try to maintain this trustdb file
+ echo "#!/bin/sh
+exec '$(escape_shell "${GPG_EXE}")' --ignore-time-conflict --no-options --no-default-keyring \\
+--homedir '$(escape_shell "${GPGHOMEDIR}")' --no-auto-check-trustdb --trust-model always \"\$@\"" > "${GPGHOMEDIR}/gpg.0.sh"
+ GPG_SH="${GPGHOMEDIR}/gpg.0.sh"
+ GPG="$GPG_SH"
+
+ # We don't usually need a secret keyring, of course, but
# for advanced operations, we might really need a secret keyring after all
if [ -n "$FORCED_SECRET_KEYRING" ] && [ -r "$FORCED_SECRET_KEYRING" ]; then
- rm -f "$SECRETKEYRING"
- cp -a "$FORCED_SECRET_KEYRING" "$SECRETKEYRING"
+ if ! aptkey_execute "$GPG" -v --batch --import "$FORCED_SECRET_KEYRING" >"${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
+ cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
+ false
+ fi
+ else
+ # and then, there are older versions of gpg which panic and implode
+ # if there isn't one available - and writeable for imports
+ # and even if not output is littered with the creation of a secring,
+ # so lets call import once to have it create what it wants in silence
+ echo -n | aptkey_execute "$GPG" --batch --import >/dev/null 2>&1 || true
fi
-
- # older gpg versions need a secring file, but newer versions take it as
- # a hint to start a migration from earlier versions. The file is empty
- # anyhow, so nothing actually happens, but its three lines of output
- # nobody expects to see in apt-key context, so trigger it in silence
- echo -n | $GPG --batch --import >/dev/null 2>&1 || true
}
if [ "$command" != 'help' ] && [ "$command" != 'verify' ]; then
add)
requires_root
setup_merged_keyring
- $GPG --quiet --batch --import "$@"
+ aptkey_execute "$GPG" --quiet --batch --import "$@"
merge_back_changes
aptkey_echo "OK"
;;
;;
export|exportall)
merge_all_trusted_keyrings_into_pubring
- $GPG_CMD --keyring "${GPGHOMEDIR}/pubring.gpg" --armor --export "$@"
+ aptkey_execute "$GPG_SH" --keyring "${GPGHOMEDIR}/pubring.gpg" --armor --export "$@"
;;
adv*)
setup_merged_keyring
aptkey_echo "Executing: $GPG $*"
- $GPG "$@"
+ aptkey_execute "$GPG" "$@"
merge_back_changes
;;
verify)
GPGV=''
eval $(apt-config shell GPGV Apt::Key::gpgvcommand)
- if [ -n "$GPGV" ] && which "$GPGV" >/dev/null 2>&1; then true;
- elif which gpgv >/dev/null 2>&1; then GPGV='gpgv';
- elif which gpgv2 >/dev/null 2>&1; then GPGV='gpgv2';
+ if [ -n "$GPGV" ] && command_available "$GPGV"; then true;
+ elif command_available 'gpgv'; then GPGV='gpgv';
+ elif command_available 'gpgv2'; then GPGV='gpgv2';
else
echo >&2 'ERROR: gpgv or gpgv2 required for verification'
exit 29
fi
setup_merged_keyring
if [ -n "$FORCED_KEYRING" ]; then
- $GPGV --homedir "${GPGHOMEDIR}" --keyring "${FORCED_KEYRING}" --ignore-time-conflict "$@"
+ "$GPGV" --homedir "${GPGHOMEDIR}" --keyring "${FORCED_KEYRING}" --ignore-time-conflict "$@"
else
- $GPGV --homedir "${GPGHOMEDIR}" --keyring "${GPGHOMEDIR}/pubring.gpg" --ignore-time-conflict "$@"
+ "$GPGV" --homedir "${GPGHOMEDIR}" --keyring "${GPGHOMEDIR}/pubring.gpg" --ignore-time-conflict "$@"
fi
;;
help)
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