diff options
Diffstat (limited to 'cmdline/apt-key')
-rwxr-xr-x | cmdline/apt-key | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/cmdline/apt-key b/cmdline/apt-key deleted file mode 100755 index 64cf5a6f4..000000000 --- a/cmdline/apt-key +++ /dev/null @@ -1,354 +0,0 @@ -#!/bin/sh - -set -e -unset GREP_OPTIONS - -GPG_CMD="gpg --ignore-time-conflict --no-options --no-default-keyring" - -# gpg needs a trustdb to function, but it can't be invalid (not even empty) -# so we create a temporary directory to store our fresh readable trustdb in -TRUSTDBDIR="$(mktemp -d)" -CURRENTTRAP="${CURRENTTRAP} rm -rf '${TRUSTDBDIR}';" -trap "${CURRENTTRAP}" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM -chmod 700 "$TRUSTDBDIR" -# We also don't use a secret keyring, of course, but gpg panics and -# implodes if there isn't one available - and writeable for imports -SECRETKEYRING="${TRUSTDBDIR}/secring.gpg" -touch $SECRETKEYRING -GPG_CMD="$GPG_CMD --secret-keyring $SECRETKEYRING" -GPG_CMD="$GPG_CMD --trustdb-name ${TRUSTDBDIR}/trustdb.gpg" - -# now create the trustdb with an (empty) dummy keyring -$GPG_CMD --quiet --check-trustdb --keyring $SECRETKEYRING -# and make sure that gpg isn't trying to update the file -GPG_CMD="$GPG_CMD --no-auto-check-trustdb --trust-model always" - -GPG="$GPG_CMD" - -MASTER_KEYRING='' -eval $(apt-config shell MASTER_KEYRING APT::Key::MasterKeyring) -ARCHIVE_KEYRING='/usr/share/keyrings/debian-archive-keyring.gpg' -eval $(apt-config shell ARCHIVE_KEYRING APT::Key::ArchiveKeyring) -REMOVED_KEYS='/usr/share/keyrings/debian-archive-removed-keys.gpg' -eval $(apt-config shell REMOVED_KEYS APT::Key::RemovedKeys) -ARCHIVE_KEYRING_URI='' -eval $(apt-config shell ARCHIVE_KEYRING_URI APT::Key::ArchiveKeyringURI) -TMP_KEYRING=/var/lib/apt/keyrings/maybe-import-keyring.gpg - -requires_root() { - if [ "$(id -u)" -ne 0 ]; then - echo >&1 "ERROR: This command can only be used by root." - exit 1 - fi -} - -# gpg defaults to mode 0600 for new keyrings. Create one with 0644 instead. -init_keyring() { - for path; do - if ! [ -e "$path" ]; then - touch -- "$path" - chmod 0644 -- "$path" - fi - done -} - -add_keys_with_verify_against_master_keyring() { - ADD_KEYRING=$1 - MASTER=$2 - - if [ ! -f "$ADD_KEYRING" ]; then - echo "ERROR: '$ADD_KEYRING' not found" - return - fi - if [ ! -f "$MASTER" ]; then - echo "ERROR: '$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 $distro-master-keyring - add_keys=`$GPG_CMD --keyring $ADD_KEYRING --with-colons --list-keys | grep ^pub | cut -d: -f5` - all_add_keys=`$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` - - # 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 - rm -f $TMP_KEYRING - $GPG_CMD --keyring $ADD_KEYRING --output $TMP_KEYRING --export $add_key - # 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 $MASTER --keyring $TMP_KEYRING --check-sigs --with-colons $add_key | grep '^sig:!:' | cut -d: -f5 | grep -q $master_key; then - $GPG --import $TMP_KEYRING - ADDED=1 - fi - done - if [ $ADDED = 0 ]; then - echo >&2 "Key '$add_key' not added. It is not signed with a master key" - fi - done - rm -f $TMP_KEYRING -} - -# update the current archive signing keyring from a network URI -# the archive-keyring keys needs to be signed with the master key -# (otherwise it does not make sense from a security POV) -net_update() { - # Disabled for now as code is insecure (LP: #1013639 (and 857472, 1013128)) - exit 1 - - if [ -z "$ARCHIVE_KEYRING_URI" ]; then - echo >&2 "ERROR: Your distribution is not supported in net-update as no uri for the archive-keyring is set" - exit 1 - fi - requires_root - # 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 - echo >&2 "ERROR: an installed wget is required for a network-based update" - exit 1 - fi - if [ ! -d /var/lib/apt/keyrings ]; then - mkdir -p /var/lib/apt/keyrings - fi - keyring=/var/lib/apt/keyrings/$(basename $ARCHIVE_KEYRING) - old_mtime=0 - if [ -e $keyring ]; then - old_mtime=$(stat -c %Y $keyring) - fi - (cd /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 - echo "Checking for new archive signing keys now" - add_keys_with_verify_against_master_keyring $keyring $MASTER_KEYRING - fi -} - -update() { - if [ ! -f $ARCHIVE_KEYRING ]; then - echo >&2 "ERROR: Can't find the archive-keyring" - echo >&2 "Is the debian-archive-keyring package installed?" - exit 1 - fi - requires_root - - # 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 - $GPG_CMD --quiet --batch --keyring $ARCHIVE_KEYRING --export | $GPG --import - - if [ -r "$REMOVED_KEYS" ]; then - # remove no-longer supported/used keys - keys=`$GPG_CMD --keyring $REMOVED_KEYS --with-colons --list-keys | grep ^pub | cut -d: -f5` - for key in $keys; do - if $GPG --list-keys --with-colons | grep ^pub | cut -d: -f5 | grep -q $key; then - $GPG --quiet --batch --delete-key --yes ${key} - fi - done - else - echo "Warning: removed keys keyring $REMOVED_KEYS missing or not readable" >&2 - fi -} - -remove_key_from_keyring() { - local GPG="$GPG_CMD --keyring $1" - # check if the key is in this keyring: the key id is in the 5 column at the end - if ! $GPG --with-colons --list-keys 2>&1 | grep -q "^pub:[^:]*:[^:]*:[^:]*:[0-9A-F]\+$2:"; then - return - fi - if [ ! -w "$1" ]; then - echo >&2 "Key ${2} is in keyring ${1}, but can't be removed as it is read only." - return - fi - # check if it is the only key in the keyring and if so remove the keyring alltogether - if [ '1' = "$($GPG --with-colons --list-keys | grep "^pub:[^:]*:[^:]*:[^:]*:[0-9A-F]\+:" | wc -l)" ]; then - mv -f "$1" "${1}~" # 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 "$1" ]; then - REALTARGET="$(readlink -f "$1")" - mv -f "$1" "${1}.dpkg-tmp" - cp -a "$REALTARGET" "$1" - ls "$(dirname $1)" - fi - # delete the key from the keyring - $GPG --batch --delete-key --yes "$2" - if [ -n "$REALTARGET" ]; then - # the real backup is the old link, not the copy we made - mv -f "${1}.dpkg-tmp" "${1}~" - fi -} - -remove_key() { - requires_root - - # if a --keyring was given, just remove from there - if [ -n "$FORCED_KEYRING" ]; then - remove_key_from_keyring "$FORCED_KEYRING" "$1" - else - # otherwise all known keyrings are up for inspection - local TRUSTEDFILE="/etc/apt/trusted.gpg" - eval $(apt-config shell TRUSTEDFILE Apt::GPGV::TrustedKeyring) - eval $(apt-config shell TRUSTEDFILE Dir::Etc::Trusted/f) - remove_key_from_keyring "$TRUSTEDFILE" "$1" - TRUSTEDPARTS="/etc/apt/trusted.gpg.d" - eval $(apt-config shell TRUSTEDPARTS Dir::Etc::TrustedParts/d) - if [ -d "$TRUSTEDPARTS" ]; then - for trusted in $(run-parts --list "$TRUSTEDPARTS" --regex '^.*\.gpg$'); do - remove_key_from_keyring "$trusted" "$1" - done - fi - fi - echo "OK" -} - - -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 - TRUSTEDFILE="$1" - FORCED_KEYRING="$1" - if [ -r "$TRUSTEDFILE" ] || [ "$2" = 'add' ] || [ "$2" = 'adv' ]; then - GPG="$GPG --keyring $TRUSTEDFILE --primary-keyring $TRUSTEDFILE" - else - echo >&2 "Error: The specified keyring »$TRUSTEDFILE« is missing or not readable" - exit 1 - fi - shift - ;; - --fakeroot) - requires_root() { true; } - shift - ;; - --*) - echo >&2 "Unknown option: $1" - usage - exit 1;; - *) - break;; - esac -done - -if [ -z "$TRUSTEDFILE" ]; then - TRUSTEDFILE="/etc/apt/trusted.gpg" - eval $(apt-config shell TRUSTEDFILE Apt::GPGV::TrustedKeyring) - eval $(apt-config shell TRUSTEDFILE Dir::Etc::Trusted/f) - if [ -r "$TRUSTEDFILE" ]; then - GPG="$GPG --keyring $TRUSTEDFILE" - fi - GPG="$GPG --primary-keyring $TRUSTEDFILE" - TRUSTEDPARTS="/etc/apt/trusted.gpg.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) - STRIPPED_TRUSTEDPARTS="${TRUSTEDPARTS%/}" - if [ "${STRIPPED_TRUSTEDPARTS}/" = "$TRUSTEDPARTS" ]; then - TRUSTEDPARTS="$STRIPPED_TRUSTEDPARTS" - fi - for trusted in $(run-parts --list "$TRUSTEDPARTS" --regex '^.*\.gpg$'); do - GPG="$GPG --keyring $trusted" - done - fi -fi - -command="$1" -if [ -z "$command" ]; then - usage - exit 1 -fi -shift - -if [ "$command" != "help" ] && ! which gpg >/dev/null 2>&1; then - echo >&2 "Warning: gnupg does not seem to be installed." - echo >&2 "Warning: apt-key requires gnupg for most operations." - echo >&2 -fi - -case "$command" in - add) - requires_root - init_keyring "$TRUSTEDFILE" - $GPG --quiet --batch --import "$1" - echo "OK" - ;; - del|rm|remove) - init_keyring "$TRUSTEDFILE" - remove_key "$1" - ;; - update) - init_keyring "$TRUSTEDFILE" - update - ;; - net-update) - init_keyring "$TRUSTEDFILE" - net_update - ;; - list) - init_keyring "$TRUSTEDFILE" - $GPG --batch --list-keys - ;; - finger*) - init_keyring "$TRUSTEDFILE" - $GPG --batch --fingerprint - ;; - export) - init_keyring "$TRUSTEDFILE" - $GPG --armor --export "$1" - ;; - exportall) - init_keyring "$TRUSTEDFILE" - $GPG --armor --export - ;; - adv*) - init_keyring "$TRUSTEDFILE" - echo "Executing: $GPG $*" - $GPG $* - ;; - help) - usage - ;; - *) - usage - exit 1 - ;; -esac |