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-rw-r--r--cmdline/apt-key.in839
1 files changed, 839 insertions, 0 deletions
diff --git a/cmdline/apt-key.in b/cmdline/apt-key.in
new file mode 100644
index 0000000..baf3df5
--- /dev/null
+++ b/cmdline/apt-key.in
@@ -0,0 +1,839 @@
+#!/bin/sh
+
+set -e
+unset GREP_OPTIONS GPGHOMEDIR CURRENTTRAP
+export IFS="$(printf "\n\b")"
+
+MASTER_KEYRING='&keyring-master-filename;'
+eval "$(apt-config shell MASTER_KEYRING APT::Key::MasterKeyring)"
+ARCHIVE_KEYRING='&keyring-filename;'
+eval "$(apt-config shell ARCHIVE_KEYRING APT::Key::ArchiveKeyring)"
+REMOVED_KEYS='&keyring-removed-filename;'
+eval "$(apt-config shell REMOVED_KEYS APT::Key::RemovedKeys)"
+ARCHIVE_KEYRING_URI='&keyring-uri;'
+eval "$(apt-config shell ARCHIVE_KEYRING_URI APT::Key::ArchiveKeyringURI)"
+
+aptkey_echo() { echo "$@"; }
+
+find_gpgv_status_fd() {
+ while [ -n "$1" ]; do
+ if [ "$1" = '--status-fd' ]; then
+ shift
+ echo "$1"
+ break
+ fi
+ shift
+ done
+}
+GPGSTATUSFD="$(find_gpgv_status_fd "$@")"
+
+apt_warn() {
+ if [ -z "$GPGHOMEDIR" ]; then
+ echo >&2 'W:' "$@"
+ else
+ echo 'W:' "$@" > "${GPGHOMEDIR}/aptwarnings.log"
+ fi
+ if [ -n "$GPGSTATUSFD" ]; then
+ echo >&${GPGSTATUSFD} '[APTKEY:] WARNING' "$@"
+ fi
+}
+apt_error() {
+ if [ -z "$GPGHOMEDIR" ]; then
+ echo >&2 'E:' "$@"
+ else
+ echo 'E:' "$@" > "${GPGHOMEDIR}/aptwarnings.log"
+ fi
+ if [ -n "$GPGSTATUSFD" ]; then
+ echo >&${GPGSTATUSFD} '[APTKEY:] ERROR' "$@"
+ fi
+}
+
+cleanup_gpg_home() {
+ if [ -z "$GPGHOMEDIR" ]; then return; fi
+ if [ -s "$GPGHOMEDIR/aptwarnings.log" ]; then
+ cat >&2 "$GPGHOMEDIR/aptwarnings.log"
+ fi
+ if command_available 'gpgconf'; then
+ GNUPGHOME="${GPGHOMEDIR}" gpgconf --kill all >/dev/null 2>&1 || true
+ fi
+ rm -rf "$GPGHOMEDIR"
+}
+
+# gpg needs (in different versions more or less) files to function correctly,
+# so we give it its own homedir and generate some valid content for it later on
+create_gpg_home() {
+ # for cases in which we want to cache a homedir due to expensive setup
+ if [ -n "$GPGHOMEDIR" ]; then
+ return
+ fi
+ if [ -n "$TMPDIR" ]; then
+ # tmpdir is a directory and current user has rwx access to it
+ # same tests as in apt-pkg/contrib/fileutl.cc GetTempDir()
+ if [ ! -d "$TMPDIR" ] || [ ! -r "$TMPDIR" ] || [ ! -w "$TMPDIR" ] || [ ! -x "$TMPDIR" ]; then
+ unset TMPDIR
+ fi
+ fi
+ GPGHOMEDIR="$(mktemp --directory --tmpdir 'apt-key-gpghome.XXXXXXXXXX')"
+ CURRENTTRAP="${CURRENTTRAP} cleanup_gpg_home;"
+ trap "${CURRENTTRAP}" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM
+ if [ -z "$GPGHOMEDIR" ]; then
+ apt_error "Could not create temporary gpg home directory in $TMPDIR (wrong permissions?)"
+ exit 28
+ fi
+ chmod 700 "$GPGHOMEDIR"
+}
+
+requires_root() {
+ if [ "$(id -u)" -ne 0 ]; then
+ apt_error "This command can only be used by root."
+ exit 1
+ fi
+}
+
+command_available() {
+ if [ -x "$1" ]; then return 0; fi
+ # 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() {
+ 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)
+ while read fprline; do
+ if [ "${fprline%%:*}" = 'sub' ]; then break; # should never happen
+ elif [ "${fprline%%:*}" != 'fpr' ]; then continue; fi
+ echo "$fprline" | cut -d':' -f 10
+ done
+ # order in the keyring shouldn't be important
+ done | sort
+}
+
+add_keys_with_verify_against_master_keyring() {
+ ADD_KEYRING="$1"
+ MASTER="$2"
+
+ if [ ! -f "$ADD_KEYRING" ]; then
+ apt_error "Keyring '$ADD_KEYRING' to be added not found"
+ return
+ fi
+ if [ ! -f "$MASTER" ]; then
+ apt_error "Master-Keyring '$MASTER' not found"
+ return
+ fi
+
+ # when adding new keys, make sure that the archive-master-keyring
+ # is honored. so:
+ # 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)"
+
+ # ensure there are no colisions LP: #857472
+ for all_add_key in $all_add_keys; do
+ for master_key in $master_keys; do
+ if [ "$all_add_key" = "$master_key" ]; then
+ echo >&2 "Keyid collision for '$all_add_key' detected, operation aborted"
+ return 1
+ fi
+ done
+ done
+
+ for add_key in $add_keys; do
+ # export the add keyring one-by-one
+ local TMP_KEYRING="${GPGHOMEDIR}/tmp-keyring.gpg"
+ 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 $master_keys; do
+ if aptkey_execute "$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
+ if [ $ADDED = 0 ]; then
+ echo >&2 "Key '$add_key' not added. It is not signed with a master key"
+ fi
+ rm -f "${TMP_KEYRING}"
+ done
+}
+
+# update the current archive signing keyring from a network URI
+# 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 $(apt-config shell APT_KEY_NET_UPDATE_ENABLED APT::Key::Net-Update-Enabled)
+ if [ -z "$APT_KEY_NET_UPDATE_ENABLED" ]; then
+ exit 1
+ fi
+
+ if [ -z "$ARCHIVE_KEYRING_URI" ]; then
+ apt_error 'Your distribution is not supported in net-update as no uri for the archive-keyring is set'
+ exit 1
+ fi
+ # in theory we would need to depend on wget for this, but this feature
+ # isn't usable in debian anyway as we have no keyring uri nor a master key
+ if ! command_available 'wget'; then
+ apt_error 'wget is required for a network-based update, but it is not installed'
+ exit 1
+ fi
+ if [ ! -d "${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")"
+ 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
+ return
+ fi
+ 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" "$MASTER_KEYRING"
+ fi
+}
+
+update() {
+ if [ -z "$APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE" ]; then
+ echo >&2 "Warning: 'apt-key update' is deprecated and should not be used anymore!"
+ if [ -z "$ARCHIVE_KEYRING" ]; then
+ echo >&2 "Note: In your distribution this command is a no-op and can therefore be removed safely."
+ exit 0
+ fi
+ fi
+ if [ ! -f "$ARCHIVE_KEYRING" ]; then
+ apt_error "Can't find the archive-keyring (Is the &keyring-package; package installed?)"
+ exit 1
+ fi
+
+ # add new keys from the package;
+
+ # we do not use add_keys_with_verify_against_master_keyring here,
+ # because "update" is run on regular package updates. A
+ # attacker might as well replace the master-archive-keyring file
+ # in the package and add his own keys. so this check wouldn't
+ # add any security. we *need* this check on net-update though
+ import_keyring_into_keyring "$ARCHIVE_KEYRING" '' && cat "${GPGHOMEDIR}/gpgoutput.log"
+
+ if [ -r "$REMOVED_KEYS" ]; then
+ # remove no-longer supported/used keys
+ get_fingerprints_of_keyring "$(dearmor_filename "$REMOVED_KEYS")" | while read key; do
+ foreach_keyring_do 'remove_key_from_keyring' "$key"
+ done
+ else
+ apt_warn "Removed keys keyring '$REMOVED_KEYS' missing or not readable"
+ fi
+}
+
+remove_key_from_keyring() {
+ local KEYRINGFILE="$1"
+ shift
+ # non-existent keyrings have by definition no keys
+ if [ ! -e "$KEYRINGFILE" ]; then
+ return
+ fi
+
+ local FINGERPRINTS="${GPGHOMEDIR}/keyringfile.keylst"
+ local DEARMOR="$(dearmor_filename "$KEYRINGFILE")"
+ get_fingerprints_of_keyring "$DEARMOR" > "$FINGERPRINTS"
+
+ for KEY in "$@"; do
+ # strip leading 0x, if present:
+ KEY="$(echo "${KEY#0x}" | tr -d ' ')"
+
+ # check if the key is in this keyring
+ if ! grep -iq "^[0-9A-F]*${KEY}$" "$FINGERPRINTS"; then
+ continue
+ fi
+ if [ ! -w "$KEYRINGFILE" ]; then
+ apt_warn "Key ${KEY} is in keyring ${KEYRINGFILE}, but can't be removed as it is read only."
+ continue
+ fi
+ # check if it is the only key in the keyring and if so remove the keyring altogether
+ if [ '1' = "$(uniq "$FINGERPRINTS" | wc -l)" ]; then
+ mv -f "$KEYRINGFILE" "${KEYRINGFILE}~" # behave like gpg
+ return
+ fi
+ # we can't just modify pointed to files as these might be in /usr or something
+ local REALTARGET
+ if [ -L "$DEARMOR" ]; then
+ REALTARGET="$(readlink -f "$DEARMOR")"
+ mv -f "$DEARMOR" "${DEARMOR}.dpkg-tmp"
+ cp -a "$REALTARGET" "$DEARMOR"
+ fi
+ # delete the key from the keyring
+ aptkey_execute "$GPG_SH" --keyring "$DEARMOR" --batch --delete-keys --yes "$KEY"
+ if [ -n "$REALTARGET" ]; then
+ # the real backup is the old link, not the copy we made
+ mv -f "${DEARMOR}.dpkg-tmp" "${DEARMOR}~"
+ fi
+ if [ "$DEARMOR" != "$KEYRINGFILE" ]; then
+ mv -f "$KEYRINGFILE" "${KEYRINGFILE}~"
+ create_new_keyring "$KEYRINGFILE"
+ aptkey_execute "$GPG_SH" --keyring "$DEARMOR" --armor --export > "$KEYRINGFILE"
+ fi
+ get_fingerprints_of_keyring "$DEARMOR" > "$FINGERPRINTS"
+ done
+}
+
+accessible_file_exists() {
+ if ! test -s "$1"; then
+ return 1
+ fi
+ if test -r "$1"; then
+ return 0
+ fi
+ apt_warn "The key(s) in the keyring $1 are ignored as the file is not readable by user '$USER' executing apt-key."
+ return 1
+}
+
+is_supported_keyring() {
+ # empty files are always supported
+ if ! test -s "$1"; then
+ return 0
+ fi
+ local FILEEXT="${1##*.}"
+ if [ "$FILEEXT" = 'gpg' ]; then
+ # 0x98, 0x99 and 0xC6 via octal as hex isn't supported by dashs printf
+ if printf '\231' | cmp --silent --bytes=1 - "$1"; then
+ true
+ elif printf '\230' | cmp --silent --bytes=1 - "$1"; then
+ true
+ elif printf '\306' | cmp --silent --bytes=1 - "$1"; then
+ true
+ else
+ apt_warn "The key(s) in the keyring $1 are ignored as the file has an unsupported filetype."
+ return 1
+ fi
+ elif [ "$FILEEXT" = 'asc' ]; then
+ true #dearmor_filename will deal with them
+ else
+ # most callers ignore unsupported extensions silently
+ apt_warn "The key(s) in the keyring $1 are ignored as the file has an unsupported filename extension."
+ return 1
+ fi
+ return 0
+}
+
+foreach_keyring_do() {
+ local ACTION="$1"
+ shift
+ # if a --keyring was given, just work on this one
+ if [ -n "$FORCED_KEYRING" ]; then
+ $ACTION "$FORCED_KEYRING" "$@"
+ else
+ # otherwise all known keyrings are up for inspection
+ if accessible_file_exists "$TRUSTEDFILE" && is_supported_keyring "$TRUSTEDFILE"; then
+ $ACTION "$TRUSTEDFILE" "$@"
+ fi
+ local TRUSTEDPARTS="/etc/apt/trusted.gpg.d"
+ eval "$(apt-config shell TRUSTEDPARTS Dir::Etc::TrustedParts/d)"
+ if [ -d "$TRUSTEDPARTS" ]; then
+ TRUSTEDPARTS="$(readlink -f "$TRUSTEDPARTS")"
+ local TRUSTEDPARTSLIST="$(cd /; find "$TRUSTEDPARTS" -mindepth 1 -maxdepth 1 \( -name '*.gpg' -o -name '*.asc' \))"
+ for trusted in $(echo "$TRUSTEDPARTSLIST" | sort); do
+ if accessible_file_exists "$trusted" && is_supported_keyring "$trusted"; then
+ $ACTION "$trusted" "$@"
+ fi
+ done
+ fi
+ fi
+}
+
+list_keys_in_keyring() {
+ local KEYRINGFILE="$1"
+ shift
+ # fingerprint and co will fail if key isn't in this keyring
+ aptkey_execute "$GPG_SH" --keyring "$(dearmor_filename "$KEYRINGFILE")" "$@" > "${GPGHOMEDIR}/gpgoutput.log" 2> "${GPGHOMEDIR}/gpgoutput.err" || true
+ if [ ! -s "${GPGHOMEDIR}/gpgoutput.log" ]; then
+ return
+ fi
+ # we fake gpg header here to refer to the real asc file rather than a temp file
+ if [ "${KEYRINGFILE##*.}" = 'asc' ]; then
+ if expr match "$(sed -n '2p' "${GPGHOMEDIR}/gpgoutput.log")" '^-\+$' >/dev/null 2>&1; then
+ echo "$KEYRINGFILE"
+ echo "$KEYRINGFILE" | sed 's#[^-]#-#g'
+ sed '1,2d' "${GPGHOMEDIR}/gpgoutput.log" || true
+ else
+ cat "${GPGHOMEDIR}/gpgoutput.log"
+ fi
+ else
+ cat "${GPGHOMEDIR}/gpgoutput.log"
+ fi
+ if [ -s "${GPGHOMEDIR}/gpgoutput.err" ]; then
+ cat >&2 "${GPGHOMEDIR}/gpgoutput.err"
+ fi
+}
+
+export_key_from_to() {
+ local FROM="$1"
+ local TO="$2"
+ shift 2
+ if ! aptkey_execute "$GPG_SH" --keyring "$(dearmor_filename "$FROM")" --export "$@" > "$TO" 2> "${GPGHOMEDIR}/gpgoutput.log"; then
+ cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
+ false
+ else
+ chmod 0644 -- "$TO"
+ fi
+}
+
+import_keyring_into_keyring() {
+ local FROM="${1:-${GPGHOMEDIR}/pubring.gpg}"
+ local TO="${2:-${GPGHOMEDIR}/pubring.gpg}"
+ shift 2
+ rm -f "${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 in between to ensure that WE control the
+ # creation, so we know that the (potentially) created $TO keyring is a
+ # simple keyring rather than a keybox as gpg2 would create it which in turn
+ # can't be read by gpgv.
+ # BEWARE: This is designed more in the way to work with the current
+ # callers, than to have a well defined it would be easy to add new callers to.
+ if [ ! -s "$TO" ]; then
+ if [ -s "$FROM" ]; then
+ if [ -z "$2" ]; then
+ local OPTS
+ if [ "${TO##*.}" = 'asc' ]; then
+ OPTS='--armor'
+ fi
+ export_key_from_to "$(dearmor_filename "$FROM")" "$TO" $OPTS ${1:+"$1"}
+ else
+ create_new_keyring "$TO"
+ fi
+ else
+ create_new_keyring "$TO"
+ fi
+ elif [ -s "$FROM" ]; then
+ local EXPORTLIMIT="$1"
+ if [ -n "$1$2" ]; then shift; fi
+ local DEARMORTO="$(dearmor_filename "$TO")"
+ if ! aptkey_execute "$GPG_SH" --keyring "$(dearmor_filename "$FROM")" --export ${EXPORTLIMIT:+"$EXPORTLIMIT"} \
+ | aptkey_execute "$GPG_SH" --keyring "$DEARMORTO" --batch --import "$@" > "${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
+ cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
+ false
+ fi
+ if [ "$DEARMORTO" != "$TO" ]; then
+ export_key_from_to "$DEARMORTO" "${DEARMORTO}.asc" --armor
+ if ! cmp -s "$TO" "${DEARMORTO}.asc" 2>/dev/null; then
+ cp -a "$TO" "${TO}~"
+ mv -f "${DEARMORTO}.asc" "$TO"
+ fi
+ fi
+ fi
+}
+
+dearmor_keyring() {
+ # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=831409#67
+ # The awk script is more complex through to skip surrounding garbage and
+ # to support multiple keys in one file (old gpgs generate version headers
+ # which get printed with the original and hence result in garbage input for base64
+ awk '/^-----BEGIN/{ x = 1; }
+/^$/{ if (x == 1) { x = 2; }; }
+/^[^=-]/{ if (x == 2) { print $0; }; }
+/^-----END/{ x = 0; }' | base64 -d
+}
+dearmor_filename() {
+ if [ "${1##*.}" = 'asc' ]; then
+ local trusted="${GPGHOMEDIR}/${1##*/}.gpg"
+ if [ -s "$1" ]; then
+ dearmor_keyring < "$1" > "$trusted"
+ fi
+ echo "$trusted"
+ elif [ "${1##*.}" = 'gpg' ]; then
+ echo "$1"
+ elif [ "$(head -n 1 "$1" 2>/dev/null)" = '-----BEGIN PGP PUBLIC KEY BLOCK-----' ]; then
+ local trusted="${GPGHOMEDIR}/${1##*/}.gpg"
+ dearmor_keyring < "$1" > "$trusted"
+ echo "$trusted"
+ else
+ echo "$1"
+ fi
+}
+catfile() {
+ cat "$(dearmor_filename "$1")" >> "$2"
+}
+
+merge_all_trusted_keyrings_into_pubring() {
+ # does the same as:
+ # foreach_keyring_do 'import_keys_from_keyring' "${GPGHOMEDIR}/pubring.gpg"
+ # but without using gpg, just cat and find
+ local PUBRING="$(readlink -f "${GPGHOMEDIR}")/pubring.gpg"
+ rm -f "$PUBRING"
+ touch "$PUBRING"
+ foreach_keyring_do 'catfile' "$PUBRING"
+}
+
+import_keys_from_keyring() {
+ import_keyring_into_keyring "$1" "$2"
+}
+
+merge_keys_into_keyrings() {
+ import_keyring_into_keyring "$2" "$1" '' --import-options 'merge-only'
+}
+
+merge_back_changes() {
+ if [ -n "$FORCED_KEYRING" ]; then
+ # if the keyring was forced merge is already done
+ if [ "$FORCED_KEYRING" != "$TRUSTEDFILE" ]; then
+ mv -f "$FORCED_KEYRING" "${FORCED_KEYRING}~"
+ export_key_from_to "$TRUSTEDFILE" "$FORCED_KEYRING" --armor
+ fi
+ return
+ fi
+ if [ -s "${GPGHOMEDIR}/pubring.gpg" ]; then
+ # merge all updated keys
+ foreach_keyring_do 'merge_keys_into_keyrings' "${GPGHOMEDIR}/pubring.gpg"
+ fi
+ # look for keys which were added or removed
+ get_fingerprints_of_keyring "${GPGHOMEDIR}/pubring.orig.gpg" > "${GPGHOMEDIR}/pubring.orig.keylst"
+ get_fingerprints_of_keyring "${GPGHOMEDIR}/pubring.gpg" > "${GPGHOMEDIR}/pubring.keylst"
+ comm -3 "${GPGHOMEDIR}/pubring.keylst" "${GPGHOMEDIR}/pubring.orig.keylst" > "${GPGHOMEDIR}/pubring.diff"
+ # key isn't part of new keyring, so remove
+ cut -f 2 "${GPGHOMEDIR}/pubring.diff" | while read key; do
+ if [ -z "$key" ]; then continue; fi
+ foreach_keyring_do 'remove_key_from_keyring' "$key"
+ done
+ # key is only part of new keyring, so we need to import it
+ cut -f 1 "${GPGHOMEDIR}/pubring.diff" | while read key; do
+ if [ -z "$key" ]; then continue; fi
+ import_keyring_into_keyring '' "$TRUSTEDFILE" "$key"
+ done
+}
+
+setup_merged_keyring() {
+ if [ -n "$FORCED_KEYID" ]; then
+ merge_all_trusted_keyrings_into_pubring
+ FORCED_KEYRING="${GPGHOMEDIR}/forcedkeyid.gpg"
+ TRUSTEDFILE="${FORCED_KEYRING}"
+ echo "#!/bin/sh
+exec sh '($(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
+ merge_all_trusted_keyrings_into_pubring
+ if [ -r "${GPGHOMEDIR}/pubring.gpg" ]; then
+ cp -a "${GPGHOMEDIR}/pubring.gpg" "${GPGHOMEDIR}/pubring.orig.gpg"
+ else
+ touch "${GPGHOMEDIR}/pubring.gpg" "${GPGHOMEDIR}/pubring.orig.gpg"
+ fi
+ echo "#!/bin/sh
+exec sh '$(escape_shell "${GPG}")' --keyring '$(escape_shell "${GPGHOMEDIR}/pubring.gpg")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
+ GPG="${GPGHOMEDIR}/gpg.1.sh"
+ else
+ TRUSTEDFILE="$(dearmor_filename "$FORCED_KEYRING")"
+ create_new_keyring "$TRUSTEDFILE"
+ echo "#!/bin/sh
+exec sh '$(escape_shell "${GPG}")' --keyring '$(escape_shell "${TRUSTEDFILE}")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
+ GPG="${GPGHOMEDIR}/gpg.1.sh"
+ fi
+}
+
+create_new_keyring() {
+ # gpg defaults to mode 0600 for new keyrings. Create one with 0644 instead.
+ if ! [ -e "$1" ]; then
+ if [ -w "$(dirname "$1")" ]; then
+ touch -- "$1"
+ chmod 0644 -- "$1"
+ fi
+ fi
+}
+
+aptkey_execute() { sh "$@"; }
+
+usage() {
+ echo "Usage: apt-key [--keyring file] [command] [arguments]"
+ echo
+ echo "Manage apt's list of trusted keys"
+ echo
+ echo " apt-key add <file> - add the key contained in <file> ('-' for stdin)"
+ echo " apt-key del <keyid> - remove the key <keyid>"
+ echo " apt-key export <keyid> - output the key <keyid>"
+ echo " apt-key exportall - output all trusted keys"
+ echo " apt-key update - update keys using the keyring package"
+ echo " apt-key net-update - update keys using the network"
+ echo " apt-key list - list keys"
+ echo " apt-key finger - list fingerprints"
+ echo " apt-key adv - pass advanced options to gpg (download key)"
+ echo
+ echo "If no specific keyring file is given the command applies to all keyring files."
+}
+
+while [ -n "$1" ]; do
+ case "$1" in
+ --keyring)
+ shift
+ if [ -z "$FORCED_KEYRING" -o "$FORCED_KEYRING" = '/dev/null' ]; then
+ TRUSTEDFILE="$1"
+ FORCED_KEYRING="$1"
+ elif [ "$TRUSTEDFILE" = "$FORCED_KEYRING" ]; then
+ create_gpg_home
+ FORCED_KEYRING="${GPGHOMEDIR}/mergedkeyrings.gpg"
+ echo -n '' > "$FORCED_KEYRING"
+ chmod 0644 -- "$FORCED_KEYRING"
+ catfile "$TRUSTEDFILE" "$FORCED_KEYRING"
+ catfile "$1" "$FORCED_KEYRING"
+ else
+ catfile "$1" "$FORCED_KEYRING"
+ fi
+ ;;
+ --keyid)
+ shift
+ if [ -n "$FORCED_KEYID" ]; then
+ apt_error 'Specifying --keyid multiple times is not supported'
+ exit 1
+ fi
+ FORCED_KEYID="$1"
+ ;;
+ --secret-keyring)
+ shift
+ FORCED_SECRET_KEYRING="$1"
+ ;;
+ --readonly)
+ merge_back_changes() { true; }
+ create_new_keyring() { if [ ! -r "$FORCED_KEYRING" ]; then TRUSTEDFILE='/dev/null'; FORCED_KEYRING="$TRUSTEDFILE"; fi; }
+ ;;
+ --fakeroot)
+ requires_root() { true; }
+ ;;
+ --quiet)
+ aptkey_echo() { true; }
+ ;;
+ --debug1)
+ # some cmds like finger redirect stderr to /dev/null …
+ aptkey_execute() { echo 'EXEC:' "$@"; sh "$@"; }
+ ;;
+ --debug2)
+ # … other more complicated ones pipe gpg into gpg.
+ aptkey_execute() { echo >&2 'EXEC:' "$@"; sh "$@"; }
+ ;;
+ --homedir)
+ # force usage of a specific homedir instead of creating a temporary
+ shift
+ GPGHOMEDIR="$1"
+ ;;
+ --*)
+ echo >&2 "Unknown option: $1"
+ usage
+ exit 1;;
+ *)
+ break;;
+ esac
+ shift
+done
+
+if [ -z "$TRUSTEDFILE" ]; then
+ TRUSTEDFILE="/etc/apt/trusted.gpg"
+ eval $(apt-config shell TRUSTEDFILE Apt::GPGV::TrustedKeyring)
+ eval $(apt-config shell TRUSTEDFILE Dir::Etc::Trusted/f)
+fi
+
+command="$1"
+if [ -z "$command" ]; then
+ usage
+ exit 1
+fi
+shift
+
+prepare_gpg_home() {
+ # crude detection if we are called from a maintainerscript where the
+ # package depends on gnupg or not. We accept recommends here as
+ # well as the script hopefully uses apt-key optionally then like e.g.
+ # debian-archive-keyring for (upgrade) cleanup did
+ if [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ] && [ -z "$APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE" ]; then
+ if ! dpkg-query --show --showformat '${Pre-Depends}${Depends}${Recommends}\n' "$DPKG_MAINTSCRIPT_PACKAGE" 2>/dev/null | grep -E -q 'gpg|gnupg'; then
+ cat >&2 <<EOF
+Warning: The $DPKG_MAINTSCRIPT_NAME maintainerscript of the package $DPKG_MAINTSCRIPT_PACKAGE
+Warning: seems to use apt-key (provided by apt) without depending on gpg, gnupg, or gnupg2.
+Warning: This will BREAK in the future and should be fixed by the package maintainer(s).
+Note: Check first if apt-key functionality is needed at all - it probably isn't!
+EOF
+ fi
+ fi
+ eval "$(apt-config shell GPG_EXE Apt::Key::gpgcommand)"
+ if [ -n "$GPG_EXE" ] && command_available "$GPG_EXE"; then
+ true
+ elif command_available 'gpg'; then
+ GPG_EXE="gpg"
+ elif command_available 'gpg2'; then
+ GPG_EXE="gpg2"
+ elif command_available 'gpg1'; then
+ GPG_EXE="gpg1"
+ else
+ apt_error 'gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation'
+ exit 255
+ fi
+
+ create_gpg_home
+
+ # 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="$GPG_SH"
+
+ # create the trustdb with an (empty) dummy keyring
+ # older gpgs required it, newer gpgs even warn that it isn't needed,
+ # but require it nonetheless for some commands, so we just play safe
+ # here for the foreseeable future and create a dummy one
+ touch "${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 "${GPGHOMEDIR}/gpgoutput.log"
+ false
+ fi
+
+ # We don't usually need a secret keyring, of course, but
+ # for advanced operations, we might really need a secret keyring after all
+ if [ -n "$FORCED_SECRET_KEYRING" ] && [ -r "$FORCED_SECRET_KEYRING" ]; then
+ if ! aptkey_execute "$GPG" -v --batch --import "$FORCED_SECRET_KEYRING" >"${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
+ # already imported keys cause gpg1 to fail for some reason… ignore this error
+ if ! grep -q 'already in secret keyring' "${GPGHOMEDIR}/gpgoutput.log"; then
+ cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
+ false
+ fi
+ 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 "$GPG" --batch --import >/dev/null 2>&1 || true
+ fi
+}
+
+warn_on_script_usage() {
+ if [ -n "$APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE" ]; then
+ return
+ fi
+ # (Maintainer) scripts should not be using apt-key
+ if [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ]; then
+ echo >&2 "Warning: apt-key should not be used in scripts (called from $DPKG_MAINTSCRIPT_NAME maintainerscript of the package ${DPKG_MAINTSCRIPT_PACKAGE})"
+ fi
+
+ echo >&2 "Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8))."
+}
+
+warn_outside_maintscript() {
+ # In del, we want to warn in interactive use, but not inside maintainer
+ # scripts, so as to give people a chance to migrate keyrings.
+ #
+ # FIXME: We should always warn starting in 2022.
+ if [ -z "$DPKG_MAINTSCRIPT_PACKAGE" ]; then
+ echo >&2 "Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8))."
+ fi
+}
+
+if [ "$command" != 'help' ] && [ "$command" != 'verify' ]; then
+ prepare_gpg_home
+fi
+
+case "$command" in
+ add)
+ warn_on_script_usage
+ requires_root
+ setup_merged_keyring
+ aptkey_execute "$GPG" --quiet --batch --import "$@"
+ merge_back_changes
+ aptkey_echo "OK"
+ ;;
+ del|rm|remove)
+ # no script warning here as removing 'add' usage needs 'del' for cleanup
+ warn_outside_maintscript
+ requires_root
+ foreach_keyring_do 'remove_key_from_keyring' "$@"
+ aptkey_echo "OK"
+ ;;
+ update)
+ warn_on_script_usage
+ requires_root
+ setup_merged_keyring
+ update
+ merge_back_changes
+ ;;
+ net-update)
+ warn_on_script_usage
+ requires_root
+ setup_merged_keyring
+ net_update
+ merge_back_changes
+ ;;
+ list|finger*)
+ warn_on_script_usage
+ foreach_keyring_do 'list_keys_in_keyring' --fingerprint "$@"
+ ;;
+ export|exportall)
+ warn_on_script_usage
+ merge_all_trusted_keyrings_into_pubring
+ aptkey_execute "$GPG_SH" --keyring "${GPGHOMEDIR}/pubring.gpg" --armor --export "$@"
+ ;;
+ adv*)
+ warn_on_script_usage
+ setup_merged_keyring
+ aptkey_echo "Executing: $GPG" "$@"
+ aptkey_execute "$GPG" "$@"
+ merge_back_changes
+ ;;
+ verify)
+ GPGV=''
+ eval $(apt-config shell GPGV Apt::Key::gpgvcommand)
+ if [ -n "$GPGV" ] && command_available "$GPGV"; then true;
+ elif command_available 'gpgv'; then GPGV='gpgv';
+ elif command_available 'gpgv2'; then GPGV='gpgv2';
+ elif command_available 'gpgv1'; then GPGV='gpgv1';
+ else
+ apt_error 'gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed'
+ exit 29
+ fi
+ # for a forced keyid we need gpg --export, so full wrapping required
+ if [ -n "$FORCED_KEYID" ]; then
+ prepare_gpg_home
+ else
+ create_gpg_home
+ fi
+ setup_merged_keyring
+ if [ -n "$FORCED_KEYRING" ]; then
+ "$GPGV" --homedir "${GPGHOMEDIR}" --keyring "$(dearmor_filename "${FORCED_KEYRING}")" --ignore-time-conflict "$@"
+ else
+ "$GPGV" --homedir "${GPGHOMEDIR}" --keyring "${GPGHOMEDIR}/pubring.gpg" --ignore-time-conflict "$@"
+ fi
+ ;;
+ help)
+ usage
+ ;;
+ *)
+ usage
+ exit 1
+ ;;
+esac