3 files changed, 36 insertions, 0 deletions
diff --git a/src/share/common b/src/share/common
index bfe73a3..05c917f 100644
--- a/src/share/common
+++ b/src/share/common
@@ -1160,3 +1160,35 @@ list_primary_fingerprints() {
 	awk -F: '/^fpr:/{ print $10 }'
     rm -rf "$fake"
 }
+
+
+check_cruft_file() {
+    local loc="$1"
+    local version="$2"
+    
+    if [ -e "$loc" ] ; then
+	printf "The file '%s' is no longer used by\nmonkeysphere (as of version %s), and can be removed.\n" "$loc" "$version" | log info
+    fi
+}
+
+check_upgrade_dir() {
+    local loc="$1"
+    local version="$2"
+
+    if [ -d "$loc" ] ; then
+	printf "The presence of directory '%s' indicates that you have\nnot yet completed a monkeysphere upgrade.\nYou should probably run the following script:\n  %s/transitions/%s\n" "$loc" "$SYSSHAREDIR" "$version" | log info
+}
+
+## look for cruft from old versions of the monkeysphere, and notice if
+## upgrades have not been run:
+report_cruft() {
+    check_upgrade_dir "${SYSCONFIGDIR}/gnupg-host" 0.23
+    check_upgrade_dir "${SYSCONFIGDIR}/gnupg-authentication" 0.23
+
+    check_cruft_file "${SYSCONFIGDIR}/gnupg-authentication.conf" 0.23
+    check_cruft_file "${SYSCONFIGDIR}/gnupg-host.conf" 0.23
+
+    if ls "${SYSDATADIR}/backup-from-"*"-transition" 2>/dev/null ; then
+	printf "The directories above are backups left over from a monkeysphere transition.\nThey may contain copies of sensitive data (host keys, certifier lists), but\nthey are no longer needed by monkeysphere.\nYou may remove them at any time.\n" | log info
+    fi
+}
diff --git a/src/share/ma/diagnostics b/src/share/ma/diagnostics
index 0411080..7810c56 100644
--- a/src/share/ma/diagnostics
+++ b/src/share/ma/diagnostics
@@ -28,6 +28,8 @@ local badhostkeys
 local sshd_config
 local problemsfound=0
 
+report_cruft
+
 if ! id monkeysphere >/dev/null ; then
     echo "! No monkeysphere user found!  Please create a monkeysphere system user with bash as its shell."
     problemsfound=$(($problemsfound+1))
diff --git a/src/share/mh/diagnostics b/src/share/mh/diagnostics
index d774723..51530e3 100644
--- a/src/share/mh/diagnostics
+++ b/src/share/mh/diagnostics
@@ -28,6 +28,8 @@ local badhostkeys
 local sshd_config
 local problemsfound=0
 
+report_cruft
+
 # FIXME: what's the correct, cross-platform answer?
 sshd_config=/etc/ssh/sshd_config
 seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)