From fecfbf2e4cbb71d20364306baf6aa7886c5f3ecd Mon Sep 17 00:00:00 2001 From: David Kalnischkies Date: Sun, 13 Sep 2015 22:16:32 +0200 Subject: deal with spaces in path, command and filepaths in apt-key MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Filenames we get could include spaces, but also the tmpdir we work in and the failures we print in return a very generic and unhelpful… Properly supporting spaces is a bit painful as we constructed gpg command before, which is now moved to (multilevel) calls to temporary scripts instead. --- cmdline/apt-key.in | 104 +++++++++++++++++++++++++++++++---------------------- 1 file changed, 61 insertions(+), 43 deletions(-) (limited to 'cmdline') diff --git a/cmdline/apt-key.in b/cmdline/apt-key.in index 8c47b5359..c2e8d176c 100644 --- a/cmdline/apt-key.in +++ b/cmdline/apt-key.in @@ -2,6 +2,7 @@ set -e unset GREP_OPTIONS +export IFS="$(printf "\n\b")" APT_DIR="/" eval $(apt-config shell APT_DIR Dir) @@ -25,7 +26,7 @@ requires_root() { } 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) @@ -56,8 +57,8 @@ add_keys_with_verify_against_master_keyring() { # 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 @@ -72,16 +73,18 @@ add_keys_with_verify_against_master_keyring() { 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 @@ -113,27 +116,27 @@ net_update() { 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) 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 @@ -166,7 +169,6 @@ remove_key_from_keyring() { return fi - local GPG="$GPG_CMD --keyring $KEYRINGFILE" for KEY in "$@"; do local FINGERPRINTS="${GPGHOMEDIR}/keyringfile.keylst" get_fingerprints_of_keyring "$KEYRINGFILE" > "$FINGERPRINTS" @@ -191,7 +193,7 @@ remove_key_from_keyring() { cp -a "$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}~" @@ -231,7 +233,7 @@ run_cmd_on_keyring() { 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() { @@ -249,7 +251,7 @@ import_keyring_into_keyring() { 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 @@ -264,7 +266,8 @@ import_keyring_into_keyring() { 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 @@ -287,7 +290,12 @@ merge_all_trusted_keyrings_into_pubring() { 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" "$PUBRING" fi @@ -336,7 +344,9 @@ setup_merged_keyring() { merge_all_trusted_keyrings_into_pubring FORCED_KEYRING="${GPGHOMEDIR}/forcedkeyid.gpg" TRUSTEDFILE="${FORCED_KEYRING}" - GPG="$GPG --keyring $TRUSTEDFILE" + echo "#!/bin/sh +exec sh \"${GPG}\" --keyring \"${TRUSTEDFILE}\" \"\$@\"" > "${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 @@ -346,10 +356,14 @@ setup_merged_keyring() { else touch "${GPGHOMEDIR}/pubring.gpg" "${GPGHOMEDIR}/pubring.orig.gpg" fi - GPG="$GPG --keyring ${GPGHOMEDIR}/pubring.gpg" + echo "#!/bin/sh +exec sh \"${GPG}\" --keyring \"${GPGHOMEDIR}/pubring.gpg\" \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh" + GPG="${GPGHOMEDIR}/gpg.1.sh" else create_new_keyring "$TRUSTEDFILE" - GPG="$GPG --keyring $TRUSTEDFILE" + echo "#!/bin/sh +exec sh \"${GPG}\" --keyring \"${TRUSTEDFILE}\" \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh" + GPG="${GPGHOMEDIR}/gpg.1.sh" fi } @@ -363,6 +377,8 @@ create_new_keyring() { fi } +aptkey_execute() { sh "$@"; } + usage() { echo "Usage: apt-key [--keyring file] [command] [arguments]" echo @@ -398,7 +414,7 @@ while [ -n "$1" ]; do ;; --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; } @@ -408,11 +424,11 @@ while [ -n "$1" ]; do ;; --debug1) # some cmds like finger redirect stderr to /dev/null … - aptkey_execute() { echo 'EXEC:' "$@"; "$@"; } + aptkey_execute() { echo 'EXEC:' "$@"; 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" @@ -469,26 +485,28 @@ prepare_gpg_home() { 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 $GPGHOMEDIR" + touch "$SECRETKEYRING" + # 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 $SECRETKEYRING >/dev/null 2>&1 + if ! "$GPG_EXE" --ignore-time-conflict --no-options --no-default-keyring \ + --homedir "$GPGHOMEDIR" --quiet --check-trustdb --keyring "$SECRETKEYRING" >"${GPGHOMEDIR}/gpgoutput.log" 2>&1; then + cat >&2 "${GPGHOMEDIR}/gpgoutput.log" + false + fi # 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" + echo "#!/bin/sh +exec \"${GPG_EXE}\" --ignore-time-conflict --no-options --no-default-keyring \\ + --homedir \"${GPGHOMEDIR}\" --no-auto-check-trustdb --trust-model always \"\$@\"" > "${GPGHOMEDIR}/gpg.0.sh" + GPG_SH="${GPGHOMEDIR}/gpg.0.sh" + GPG="$GPG_SH" # for advanced operations, we might really need a secret keyring after all if [ -n "$FORCED_SECRET_KEYRING" ] && [ -r "$FORCED_SECRET_KEYRING" ]; then @@ -500,7 +518,7 @@ prepare_gpg_home() { # 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 | $GPG --batch --import >/dev/null 2>&1 || true + echo -n | aptkey_execute "$GPG" --batch --import >/dev/null 2>&1 || true } if [ "$command" != 'help' ] && [ "$command" != 'verify' ]; then @@ -511,7 +529,7 @@ case "$command" in add) requires_root setup_merged_keyring - $GPG --quiet --batch --import "$@" + aptkey_execute "$GPG" --quiet --batch --import "$@" merge_back_changes aptkey_echo "OK" ;; @@ -540,12 +558,12 @@ case "$command" in ;; 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) @@ -566,9 +584,9 @@ case "$command" in fi setup_merged_keyring if [ -n "$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) -- cgit v1.2.3