generate apt-key script with vendor info about keys

The apt-key script uses quiet a few keyring files for operation which
are specific to the distribution it is build on and is hence one of the
most patched parts – even if it is not that often used anymore now that
a fragment directory for trusted.gpg exists.

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