X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/e23ee4c21c6d8045ab020526aa864a48dc16ddd9..dd592790c8f1be4925f74266742c163516ab80c7:/cmdline/apt-key.in

diff --git a/cmdline/apt-key.in b/cmdline/apt-key.in
index f1d021e8a..80eee6265 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
@@ -502,38 +506,38 @@ prepare_gpg_home() {
 
     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"
-
     # 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 "$GPGHOMEDIR" --quiet --check-trustdb --keyring "$SECRETKEYRING" >"${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
+       --homedir "$GPGHOMEDIR" --quiet --check-trustdb --keyring "${GPGHOMEDIR}/empty.gpg" >"${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
        cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
        false
     fi
-    # tell gpg that it shouldn't try to maintain a trustdb file
+
+    # now tell gpg that it shouldn't try to maintain this trustdb file
     echo "#!/bin/sh
-exec \"${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"
 
+    # 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
-	rm -f "$SECRETKEYRING"
-	cp -a "$FORCED_SECRET_KEYRING" "$SECRETKEYRING"
+	if ! aptkey_execute "$GPG" -v --batch --import "$FORCED_SECRET_KEYRING" >"${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
+	    cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
+	    false
+	fi
+    else
+       # and then, there are older versions of gpg which panic and implode
+       # if there isn't one available - and writeable for imports
+       # and even if not output is littered with the creation of a secring,
+       # so lets call import once to have it create what it wants in silence
+       echo -n | aptkey_execute "$GPG" --batch --import >/dev/null 2>&1 || true
     fi
-
-    # older gpg versions need a secring file, but newer versions take it as
-    # 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 | aptkey_execute "$GPG" --batch --import >/dev/null 2>&1 || true
 }
 
 if [ "$command" != 'help' ] && [ "$command" != 'verify' ]; then