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-rw-r--r--cmdline/apt-key.in44
1 files changed, 24 insertions, 20 deletions
diff --git a/cmdline/apt-key.in b/cmdline/apt-key.in
index f1d021e8a..4d1079a4b 100644
--- a/cmdline/apt-key.in
+++ b/cmdline/apt-key.in
@@ -4,17 +4,14 @@ set -e
unset GREP_OPTIONS
export IFS="$(printf "\n\b")"
-APT_DIR="/"
-eval $(apt-config shell APT_DIR Dir)
-
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 "$@"; }
@@ -40,6 +37,10 @@ command_available() {
return 1
}
+escape_shell() {
+ echo "$@" | sed -e "s#'#'\"'\"'#g"
+}
+
get_fingerprints_of_keyring() {
aptkey_execute "$GPG_SH" --keyring "$1" --with-colons --fingerprint | while read publine; do
# search for a public key
@@ -55,8 +56,8 @@ get_fingerprints_of_keyring() {
}
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"
@@ -72,8 +73,8 @@ 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 "$ADD_KEYRING")"
- all_add_keys=`aptkey_execute "$GPG_SH" --keyring "$ADD_KEYRING" --with-colons --list-keys | grep ^[ps]ub | cut -d: -f5`
- master_keys=`aptkey_execute "$GPG_SH" --keyring "$MASTER" --with-colons --list-keys | grep ^pub | cut -d: -f5`
+ all_add_keys="$(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
@@ -114,6 +115,9 @@ add_keys_with_verify_against_master_keyring() {
# 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 $(apt-config shell APT_KEY_NET_UPDATE_ENABLED APT::Key::Net-Update-Enabled)
@@ -137,7 +141,7 @@ net_update() {
keyring="${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
@@ -228,7 +232,7 @@ foreach_keyring_do() {
$ACTION "$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%/}"
@@ -360,7 +364,7 @@ setup_merged_keyring() {
FORCED_KEYRING="${GPGHOMEDIR}/forcedkeyid.gpg"
TRUSTEDFILE="${FORCED_KEYRING}"
echo "#!/bin/sh
-exec sh \"${GPG}\" --keyring \"${TRUSTEDFILE}\" \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
+exec sh '($(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" "$FORCED_KEYID" || true
@@ -372,12 +376,12 @@ exec sh \"${GPG}\" --keyring \"${TRUSTEDFILE}\" \"\$@\"" > "${GPGHOMEDIR}/gpg.1.
touch "${GPGHOMEDIR}/pubring.gpg" "${GPGHOMEDIR}/pubring.orig.gpg"
fi
echo "#!/bin/sh
-exec sh \"${GPG}\" --keyring \"${GPGHOMEDIR}/pubring.gpg\" \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
+exec sh '$(escape_shell "${GPG}")' --keyring '$(escape_shell "${GPGHOMEDIR}/pubring.gpg")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
GPG="${GPGHOMEDIR}/gpg.1.sh"
else
create_new_keyring "$TRUSTEDFILE"
echo "#!/bin/sh
-exec sh \"${GPG}\" --keyring \"${TRUSTEDFILE}\" \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
+exec sh '$(escape_shell "${GPG}")' --keyring '$(escape_shell "${TRUSTEDFILE}")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
GPG="${GPGHOMEDIR}/gpg.1.sh"
fi
}
@@ -479,13 +483,13 @@ create_gpg_home() {
fi
fi
GPGHOMEDIR="$(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 "$GPG_EXE" ] && command_available "$GPG_EXE"; then
true
@@ -518,8 +522,8 @@ prepare_gpg_home() {
fi
# tell gpg that it shouldn't try to maintain a trustdb file
echo "#!/bin/sh
-exec \"${GPG_EXE}\" --ignore-time-conflict --no-options --no-default-keyring \\
- --homedir \"${GPGHOMEDIR}\" --no-auto-check-trustdb --trust-model always \"\$@\"" > "${GPGHOMEDIR}/gpg.0.sh"
+exec '$(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"