you want to be nice and quote a filename just to be reminded by gpg

[apt.git] / cmdline / apt-key

diff --git a/cmdline/apt-key b/cmdline/apt-key
index b39ab12e48fd0daf57ec369fdf54b2ee4b6bf386..e632be706c49c581d3d9593ec3e48e2a9ec9c34d 100755 (executable)
--- a/cmdline/apt-key
+++ b/cmdline/apt-key
@@ -5,7 +5,15 @@ unset GREP_OPTIONS
 
 # We don't use a secret keyring, of course, but gpg panics and
 # implodes if there isn't one available
-GPG_CMD="gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg"
+SECRETKEYRING="$(mktemp)"
+trap "rm -f '${SECRETKEYRING}'" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM
+GPG_CMD="gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring ${SECRETKEYRING}"
+
+if [ "$(id -u)" -eq 0 ]; then
+       # we could use a tmpfile here too, but creation of this tends to be time-consuming
+       GPG_CMD="$GPG_CMD --trustdb-name /etc/apt/trustdb.gpg"
+fi
+
 GPG="$GPG_CMD"
 
 MASTER_KEYRING=""
@@ -16,6 +24,13 @@ ARCHIVE_KEYRING_URI=""
 ARCHIVE_KEYRING=/usr/share/keyrings/debian-archive-keyring.gpg
 REMOVED_KEYS=/usr/share/keyrings/debian-archive-removed-keys.gpg
 
+requires_root() {
+       if [ "$(id -u)" -ne 0 ]; then
+               echo >&1 "ERROR: This command can only be used by root."
+               exit 1
+       fi
+}
+
 add_keys_with_verify_against_master_keyring() {
     ADD_KEYRING=$1
     MASTER=$2
@@ -54,13 +69,14 @@ add_keys_with_verify_against_master_keyring() {
 # (otherwise it does not make sense from a security POV)
 net_update() {
     if [ -z "$ARCHIVE_KEYRING_URI" ]; then
-       echo "ERROR: no location for the archive-keyring given"
+       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 "ERROR: an installed wget is required for a network-based update"
+       echo >&2 "ERROR: an installed wget is required for a network-based update"
        exit 1
     fi
     if [ ! -d /var/lib/apt/keyrings ]; then
@@ -88,6 +104,7 @@ update() {
        echo >&2 "Is the debian-archive-keyring package installed?"
        exit 1
     fi
+    requires_root
 
     # add new keys from the package;
 
@@ -179,10 +196,12 @@ fi
 
 case "$command" in
     add)
+        requires_root
         $GPG --quiet --batch --import "$1"
         echo "OK"
         ;;
     del|rm|remove)
+        requires_root
         $GPG --quiet --batch --delete-key --yes "$1"
         echo "OK"
         ;;