postrm update to remove leftover files after purge [CIT-556] (#460)

* postrm rm users, groups, logs, .d files [CIT-556]

Signed-off-by: Alex Solomes <alex.solomes@softwareag.com>

* added case statement & purge/remove logic [CIT-556]

Signed-off-by: Alex Solomes <alex.solomes@softwareag.com>

* removing sudoers file [CIT-556]

Signed-off-by: Alex Solomes <alex.solomes@softwareag.com>

* remove sudoers from tedge-agent [CIT-556]

Signed-off-by: Alex Solomes <alex.solomes@softwareag.com>

3 files changed, 123 insertions, 4 deletions

diff --git a/configuration/debian/tedge/postrm b/configuration/debian/tedge/postrm
index 155678ca..a5e5278a 100644
--- a/configuration/debian/tedge/postrm
+++ b/configuration/debian/tedge/postrm
@@ -1,8 +1,70 @@
 #!/bin/sh
 set -e
 
-### Remove configs
+remove_user_tedge() {
+    if getent passwd tedge > /dev/null; then
+        deluser --quiet --system tedge
+    fi
+}
 
-if [ "$1" = "purge" ]; then
-    rm -rf /etc/tedge
-fi
+remove_tedge_users_group() {
+    if getent group tedge-users > /dev/null; then
+        groupdel tedge-users
+    fi
+}
+
+remove_sudoers_file() {
+    if [ -f "/etc/sudoers.d/tedge-users" ]; then
+        rm /etc/sudoers.d/tedge-users
+    fi
+
+    if [ -f "/etc/sudoers.d/010_pi-nopasswd" ]; then
+        rm /etc/sudoers.d/tedge-users-nopasswd
+    fi
+}
+
+purge_configs() {
+    if [ -d "/etc/tedge" ]; then
+        rm -rf /etc/tedge
+    fi
+}
+
+remove_mosquitto_edit() {
+    if [ -f "/etc/mosquitto/mosquitto.conf" ]; then
+        sed -i '/include_dir \/etc\/tedge\/mosquitto-conf/d' /etc/mosquitto/mosquitto.conf
+    fi
+}
+
+purge_var_log() {
+    if [ -d "/var/log/tedge" ]; then
+        rm -rf /var/log/tedge
+    fi
+}
+
+case "$1" in
+    purge)
+        remove_user_tedge
+        remove_tedge_users_group
+        remove_mosquitto_edit
+        remove_sudoers_file
+        purge_configs
+        purge_var_log
+    ;;
+
+    remove)
+        remove_user_tedge
+        remove_tedge_users_group
+        remove_mosquitto_edit
+        remove_sudoers_file
+    ;;
+
+    upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
+    ;;
+
+    *)
+        echo "tedge postrm called with unknown argument \`$1\`" >&2
+        exit 1
+    ;;
+esac
+
+#DEBHELPER#
diff --git a/configuration/debian/tedge_agent/postrm b/configuration/debian/tedge_agent/postrm
new file mode 100644
index 00000000..2c54bb97
--- /dev/null
+++ b/configuration/debian/tedge_agent/postrm
@@ -0,0 +1,48 @@
+#!/bin/sh
+set -e
+
+remove_tedge_agent_user() {
+    if getent passwd tedge-agent >/dev/null; then
+        pkill -u tedge-agent || true
+        deluser --quiet --system tedge-agent
+    fi
+}
+
+remove_sudoers_file() {
+    if [ -f "/etc/sudoers.d/tedge-agent" ]; then
+        rm /etc/sudoers.d/tedge-agent
+    fi
+
+    if [ -f "/etc/sudoers.d/010_pi-nopasswd" ]; then
+        rm /etc/sudoers.d/010_pi-nopasswd
+    fi
+}
+
+purge_agent_directory() {
+    if [ -d "/etc/tedge/.agent" ]; then
+        rm -rf /etc/tedge/.agent
+    fi
+}
+
+case "$1" in
+    purge)
+        remove_tedge_agent_user
+        remove_sudoers_file
+        purge_agent_directory
+    ;;
+
+    remove)
+        remove_tedge_agent_user
+        remove_sudoers_file
+    ;;
+
+    upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
+    ;;
+
+    *)
+        echo "tedge postrm called with unknown argument \`$1\`" >&2
+        exit 1
+    ;;
+esac
+
+#DEBHELPER#
diff --git a/configuration/debian/tedge_mapper/postrm b/configuration/debian/tedge_mapper/postrm
new file mode 100644
index 00000000..942ff29c
--- /dev/null
+++ b/configuration/debian/tedge_mapper/postrm
@@ -0,0 +1,9 @@
+#!/bin/sh
+set -e
+
+### Remove user tedge-mapper
+if getent passwd tedge-mapper >/dev/null; then
+    deluser --quiet --system tedge-mapper
+fi
+
+#DEBHELPER#