X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/f7bd44bae0d7cb7f9838490b5eece075da83899e..6dcae298f972eb20223838f0e1dc376c44bc9cc3:/cmdline/apt-key.in

diff --git a/cmdline/apt-key.in b/cmdline/apt-key.in
index cfd4be35d..b309142cf 100644
--- a/cmdline/apt-key.in
+++ b/cmdline/apt-key.in
@@ -193,7 +193,7 @@ remove_key_from_keyring() {
 	get_fingerprints_of_keyring "$KEYRINGFILE" > "$FINGERPRINTS"
 
         # strip leading 0x, if present:
-        KEY="$(printf %s "$KEY" | sed s/^0x//)"
+        KEY="${KEY#0x}"
 
 	# check if the key is in this keyring
 	if ! grep -iq "^[0-9A-F]*${KEY}$" "$FINGERPRINTS"; then
@@ -493,8 +493,21 @@ create_gpg_home() {
 }
 
 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 "$DPKG_MAINTSCRIPT_PACKAGE" ]; then
+	if ! dpkg-query --show --showformat '${Pre-Depends}${Depends}${Recommends}\n' "$DPKG_MAINTSCRIPT_PACKAGE" 2>/dev/null | grep -q gnupg; then
+	    cat >&2 <<EOF
+Warning: The $DPKG_MAINTSCRIPT_NAME maintainerscript of the package $DPKG_MAINTSCRIPT_PACKAGE
+Warning: seems to use apt-key (provided by apt) without depending on gnupg or gnupg2.
+Warning: This will BREAK in the future and should be fixed by the package maintainer(s).
+Note: Check first if apt-key functionality is needed at all - it probably isn't!
+EOF
+	fi
+    fi
     eval "$(apt-config shell GPG_EXE Apt::Key::gpgcommand)"
-
     if [ -n "$GPG_EXE" ] && command_available "$GPG_EXE"; then
 	true
     elif command_available 'gpg'; then